commit e75aed98c0290999f101c56161c7ce38004693d7
parent 81bab74921a09e6a95d26172d5eab24f651e2560
Author: Stephen Gregoratto <dev@sgregoratto.me>
Date: Wed, 23 Sep 2020 16:31:49 +1000
Add oconfigure for portable building
Diffstat:
| A | .gitignore | | | 7 | +++++++ |
| M | Makefile | | | 25 | ++++++++++++++----------- |
| M | bsdiff.c | | | 3 | +++ |
| M | bspatch.c | | | 3 | +++ |
| A | compats.c | | | 3839 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | configure | | | 2455 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | tests.c | | | 675 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
7 files changed, 6996 insertions(+), 11 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1,7 @@
+bsdiff
+bspatch
+
+Makefile.configure
+config.h
+*.log
+*.old
diff --git a/Makefile b/Makefile
@@ -1,15 +1,18 @@
-CFLAGS += -O3 -lbz2
+include Makefile.configure
-PREFIX ?= /usr/local
-INSTALL_PROGRAM ?= ${INSTALL} -c -s -m 555
-INSTALL_MAN ?= ${INSTALL} -c -m 444
+OBJS = bsdiff.o bspatch.o compats.o
-all: bsdiff bspatch
-bsdiff: bsdiff.c
-bspatch: bspatch.c
+all: bsdiff bspatch
+
+bsdiff: bsdiff.o compats.o
+ $(CC) -o $@ -lbz2 $(LDFLAGS) bsdiff.o compats.o
+
+bspatch: bspatch.o compats.o
+ $(CC) -o $@ -lbz2 $(LDFLAGS) bspatch.o compats.o
install:
- ${INSTALL_PROGRAM} bsdiff bspatch ${PREFIX}/bin
-.ifndef WITHOUT_MAN
- ${INSTALL_MAN} bsdiff.1 bspatch.1 ${PREFIX}/man/man1
-.endif
+ ${INSTALL_PROGRAM} bsdiff bspatch ${DESTDIR}${PREFIX}/bin
+ ${INSTALL_MAN} bsdiff.1 bspatch.1 ${DESTDIR}${PREFIX}/man/man1
+
+clean:
+ rm -f bsdiff bspatch $(OBJS)
diff --git a/bsdiff.c b/bsdiff.c
@@ -28,10 +28,13 @@
__FBSDID("$FreeBSD: src/usr.bin/bsdiff/bsdiff/bsdiff.c,v 1.1 2005/08/06 01:59:05 cperciva Exp $");
#endif
+#include "config.h"
#include <sys/types.h>
#include <bzlib.h>
+#if HAVE_ERR
#include <err.h>
+#endif
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
diff --git a/bspatch.c b/bspatch.c
@@ -28,11 +28,14 @@
__FBSDID("$FreeBSD: src/usr.bin/bsdiff/bspatch/bspatch.c,v 1.1 2005/08/06 01:59:06 cperciva Exp $");
#endif
+#include "config.h"
#include <bzlib.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
+#if HAVE_ERR
#include <err.h>
+#endif
#include <unistd.h>
#include <fcntl.h>
diff --git a/compats.c b/compats.c
@@ -0,0 +1,3839 @@
+#include "config.h"
+#if !HAVE_ERR
+/*
+ * Copyright (c) 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <errno.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+void
+vwarnx(const char *fmt, va_list ap)
+{
+ fprintf(stderr, "%s: ", getprogname());
+ if (fmt != NULL)
+ vfprintf(stderr, fmt, ap);
+}
+
+void
+vwarn(const char *fmt, va_list ap)
+{
+ int sverrno;
+
+ sverrno = errno;
+ vwarnx(fmt, ap);
+ if (fmt != NULL)
+ fputs(": ", stderr);
+ fprintf(stderr, "%s\n", strerror(sverrno));
+}
+
+void
+err(int eval, const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vwarn(fmt, ap);
+ va_end(ap);
+ exit(eval);
+}
+
+void
+errx(int eval, const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vwarnx(fmt, ap);
+ va_end(ap);
+ fputc('\n', stderr);
+ exit(eval);
+}
+
+void
+warn(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vwarn(fmt, ap);
+ va_end(ap);
+}
+
+void
+warnx(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vwarnx(fmt, ap);
+ va_end(ap);
+ fputc('\n', stderr);
+}
+#endif /* !HAVE_ERR */
+#if !HAVE_B64_NTOP
+/* $OpenBSD$ */
+
+/*
+ * Copyright (c) 1996 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
+ * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
+ * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+ * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+ * SOFTWARE.
+ */
+
+/*
+ * Portions Copyright (c) 1995 by International Business Machines, Inc.
+ *
+ * International Business Machines, Inc. (hereinafter called IBM) grants
+ * permission under its copyrights to use, copy, modify, and distribute this
+ * Software with or without fee, provided that the above copyright notice and
+ * all paragraphs of this notice appear in all copies, and that the name of IBM
+ * not be used in connection with the marketing of any product incorporating
+ * the Software or modifications thereof, without specific, written prior
+ * permission.
+ *
+ * To the extent it has a right to do so, IBM grants an immunity from suit
+ * under its patents, if any, for the use, sale or manufacture of products to
+ * the extent that such products are used for performing Domain Name System
+ * dynamic updates in TCP/IP networks by means of the Software. No immunity is
+ * granted for any product per se or for any other function of any product.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL,
+ * DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN
+ * IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+
+#include <ctype.h>
+#include <resolv.h>
+#include <stdio.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+static const char b64_Base64[] =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+static const char b64_Pad64 = '=';
+
+/* (From RFC1521 and draft-ietf-dnssec-secext-03.txt)
+ The following encoding technique is taken from RFC 1521 by Borenstein
+ and Freed. It is reproduced here in a slightly edited form for
+ convenience.
+
+ A 65-character subset of US-ASCII is used, enabling 6 bits to be
+ represented per printable character. (The extra 65th character, "=",
+ is used to signify a special processing function.)
+
+ The encoding process represents 24-bit groups of input bits as output
+ strings of 4 encoded characters. Proceeding from left to right, a
+ 24-bit input group is formed by concatenating 3 8-bit input groups.
+ These 24 bits are then treated as 4 concatenated 6-bit groups, each
+ of which is translated into a single digit in the base64 alphabet.
+
+ Each 6-bit group is used as an index into an array of 64 printable
+ characters. The character referenced by the index is placed in the
+ output string.
+
+ Table 1: The Base64 Alphabet
+
+ Value Encoding Value Encoding Value Encoding Value Encoding
+ 0 A 17 R 34 i 51 z
+ 1 B 18 S 35 j 52 0
+ 2 C 19 T 36 k 53 1
+ 3 D 20 U 37 l 54 2
+ 4 E 21 V 38 m 55 3
+ 5 F 22 W 39 n 56 4
+ 6 G 23 X 40 o 57 5
+ 7 H 24 Y 41 p 58 6
+ 8 I 25 Z 42 q 59 7
+ 9 J 26 a 43 r 60 8
+ 10 K 27 b 44 s 61 9
+ 11 L 28 c 45 t 62 +
+ 12 M 29 d 46 u 63 /
+ 13 N 30 e 47 v
+ 14 O 31 f 48 w (pad) =
+ 15 P 32 g 49 x
+ 16 Q 33 h 50 y
+
+ Special processing is performed if fewer than 24 bits are available
+ at the end of the data being encoded. A full encoding quantum is
+ always completed at the end of a quantity. When fewer than 24 input
+ bits are available in an input group, zero bits are added (on the
+ right) to form an integral number of 6-bit groups. Padding at the
+ end of the data is performed using the '=' character.
+
+ Since all base64 input is an integral number of octets, only the
+ -------------------------------------------------
+ following cases can arise:
+
+ (1) the final quantum of encoding input is an integral
+ multiple of 24 bits; here, the final unit of encoded
+ output will be an integral multiple of 4 characters
+ with no "=" padding,
+ (2) the final quantum of encoding input is exactly 8 bits;
+ here, the final unit of encoded output will be two
+ characters followed by two "=" padding characters, or
+ (3) the final quantum of encoding input is exactly 16 bits;
+ here, the final unit of encoded output will be three
+ characters followed by one "=" padding character.
+ */
+
+int
+b64_ntop(u_char const *src, size_t srclength, char *target, size_t targsize)
+{
+ size_t datalength = 0;
+ u_char input[3];
+ u_char output[4];
+ size_t i;
+
+ while (2 < srclength) {
+ input[0] = *src++;
+ input[1] = *src++;
+ input[2] = *src++;
+ srclength -= 3;
+
+ output[0] = input[0] >> 2;
+ output[1] = ((input[0] & 0x03) << 4) + (input[1] >> 4);
+ output[2] = ((input[1] & 0x0f) << 2) + (input[2] >> 6);
+ output[3] = input[2] & 0x3f;
+
+ if (datalength + 4 > targsize)
+ return (-1);
+ target[datalength++] = b64_Base64[output[0]];
+ target[datalength++] = b64_Base64[output[1]];
+ target[datalength++] = b64_Base64[output[2]];
+ target[datalength++] = b64_Base64[output[3]];
+ }
+
+ /* Now we worry about padding. */
+ if (0 != srclength) {
+ /* Get what's left. */
+ input[0] = input[1] = input[2] = '\0';
+ for (i = 0; i < srclength; i++)
+ input[i] = *src++;
+
+ output[0] = input[0] >> 2;
+ output[1] = ((input[0] & 0x03) << 4) + (input[1] >> 4);
+ output[2] = ((input[1] & 0x0f) << 2) + (input[2] >> 6);
+
+ if (datalength + 4 > targsize)
+ return (-1);
+ target[datalength++] = b64_Base64[output[0]];
+ target[datalength++] = b64_Base64[output[1]];
+ if (srclength == 1)
+ target[datalength++] = b64_Pad64;
+ else
+ target[datalength++] = b64_Base64[output[2]];
+ target[datalength++] = b64_Pad64;
+ }
+ if (datalength >= targsize)
+ return (-1);
+ target[datalength] = '\0'; /* Returned value doesn't count \0. */
+ return (datalength);
+}
+
+/* skips all whitespace anywhere.
+ converts characters, four at a time, starting at (or after)
+ src from base - 64 numbers into three 8 bit bytes in the target area.
+ it returns the number of data bytes stored at the target, or -1 on error.
+ */
+
+int
+b64_pton(char const *src, u_char *target, size_t targsize)
+{
+ int state, ch;
+ size_t tarindex;
+ u_char nextbyte;
+ char *pos;
+
+ state = 0;
+ tarindex = 0;
+
+ while ((ch = (unsigned char)*src++) != '\0') {
+ if (isspace(ch)) /* Skip whitespace anywhere. */
+ continue;
+
+ if (ch == b64_Pad64)
+ break;
+
+ pos = strchr(b64_Base64, ch);
+ if (pos == 0) /* A non-base64 character. */
+ return (-1);
+
+ switch (state) {
+ case 0:
+ if (target) {
+ if (tarindex >= targsize)
+ return (-1);
+ target[tarindex] = (pos - b64_Base64) << 2;
+ }
+ state = 1;
+ break;
+ case 1:
+ if (target) {
+ if (tarindex >= targsize)
+ return (-1);
+ target[tarindex] |= (pos - b64_Base64) >> 4;
+ nextbyte = ((pos - b64_Base64) & 0x0f) << 4;
+ if (tarindex + 1 < targsize)
+ target[tarindex+1] = nextbyte;
+ else if (nextbyte)
+ return (-1);
+ }
+ tarindex++;
+ state = 2;
+ break;
+ case 2:
+ if (target) {
+ if (tarindex >= targsize)
+ return (-1);
+ target[tarindex] |= (pos - b64_Base64) >> 2;
+ nextbyte = ((pos - b64_Base64) & 0x03) << 6;
+ if (tarindex + 1 < targsize)
+ target[tarindex+1] = nextbyte;
+ else if (nextbyte)
+ return (-1);
+ }
+ tarindex++;
+ state = 3;
+ break;
+ case 3:
+ if (target) {
+ if (tarindex >= targsize)
+ return (-1);
+ target[tarindex] |= (pos - b64_Base64);
+ }
+ tarindex++;
+ state = 0;
+ break;
+ }
+ }
+
+ /*
+ * We are done decoding Base-64 chars. Let's see if we ended
+ * on a byte boundary, and/or with erroneous trailing characters.
+ */
+
+ if (ch == b64_Pad64) { /* We got a pad char. */
+ ch = (unsigned char)*src++; /* Skip it, get next. */
+ switch (state) {
+ case 0: /* Invalid = in first position */
+ case 1: /* Invalid = in second position */
+ return (-1);
+
+ case 2: /* Valid, means one byte of info */
+ /* Skip any number of spaces. */
+ for (; ch != '\0'; ch = (unsigned char)*src++)
+ if (!isspace(ch))
+ break;
+ /* Make sure there is another trailing = sign. */
+ if (ch != b64_Pad64)
+ return (-1);
+ ch = (unsigned char)*src++; /* Skip the = */
+ /* Fall through to "single trailing =" case. */
+ /* FALLTHROUGH */
+
+ case 3: /* Valid, means two bytes of info */
+ /*
+ * We know this char is an =. Is there anything but
+ * whitespace after it?
+ */
+ for (; ch != '\0'; ch = (unsigned char)*src++)
+ if (!isspace(ch))
+ return (-1);
+
+ /*
+ * Now make sure for cases 2 and 3 that the "extra"
+ * bits that slopped past the last full byte were
+ * zeros. If we don't check them, they become a
+ * subliminal channel.
+ */
+ if (target && tarindex < targsize &&
+ target[tarindex] != 0)
+ return (-1);
+ }
+ } else {
+ /*
+ * We ended by seeing the end of the string. Make sure we
+ * have no partial bytes lying around.
+ */
+ if (state != 0)
+ return (-1);
+ }
+
+ return (tarindex);
+}
+#endif /* !HAVE_B64_NTOP */
+#if !HAVE_EXPLICIT_BZERO
+/* OPENBSD ORIGINAL: lib/libc/string/explicit_bzero.c */
+/*
+ * Public domain.
+ * Written by Ted Unangst
+ */
+
+#include <string.h>
+
+/*
+ * explicit_bzero - don't let the compiler optimize away bzero
+ */
+
+#if HAVE_MEMSET_S
+
+void
+explicit_bzero(void *p, size_t n)
+{
+ if (n == 0)
+ return;
+ (void)memset_s(p, n, 0, n);
+}
+
+#else /* HAVE_MEMSET_S */
+
+#include <strings.h>
+
+/*
+ * Indirect bzero through a volatile pointer to hopefully avoid
+ * dead-store optimisation eliminating the call.
+ */
+static void (* volatile ssh_bzero)(void *, size_t) = bzero;
+
+void
+explicit_bzero(void *p, size_t n)
+{
+ if (n == 0)
+ return;
+ /*
+ * clang -fsanitize=memory needs to intercept memset-like functions
+ * to correctly detect memory initialisation. Make sure one is called
+ * directly since our indirection trick above sucessfully confuses it.
+ */
+#if defined(__has_feature)
+# if __has_feature(memory_sanitizer)
+ memset(p, 0, n);
+# endif
+#endif
+
+ ssh_bzero(p, n);
+}
+
+#endif /* HAVE_MEMSET_S */
+#endif /* !HAVE_EXPLICIT_BZERO */
+#if !HAVE_FTS
+/* $OpenBSD$ */
+
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+/*
+ * oconfigure: Adapted from sys/_types.h.
+ * oconfigure: Be conservative with ALIGNBYTES.
+ */
+#define FTS_ALIGNBYTES (sizeof(long) - 1)
+#define FTS_ALIGN(p) (((unsigned long)(p) + FTS_ALIGNBYTES) &~ FTS_ALIGNBYTES)
+
+static FTSENT *fts_alloc(FTS *, char *, size_t);
+static FTSENT *fts_build(FTS *, int);
+static void fts_lfree(FTSENT *);
+static void fts_load(FTS *, FTSENT *);
+static size_t fts_maxarglen(char * const *);
+static void fts_padjust(FTS *, FTSENT *);
+static int fts_palloc(FTS *, size_t);
+static FTSENT *fts_sort(FTS *, FTSENT *, int);
+static u_short fts_stat(FTS *, FTSENT *, int, int);
+static int fts_safe_changedir(FTS *, FTSENT *, int, char *);
+
+/* oconfigure: Prefix with FTS_. */
+
+#define FTS_MAX(a, b) (((a) > (b)) ? (a) : (b))
+#define FTS_ISDOT(a) (a[0] == '.' && (!a[1] || (a[1] == '.' && !a[2])))
+#define FTS_CLR(opt) (sp->fts_options &= ~(opt))
+#define FTS_ISSET(opt) (sp->fts_options & (opt))
+#define FTS_SET(opt) (sp->fts_options |= (opt))
+#define FTS_FCHDIR(sp, fd) (!FTS_ISSET(FTS_NOCHDIR) && fchdir(fd))
+/* fts_build flags */
+#define FTS_BCHILD 1 /* fts_children */
+#define FTS_BNAMES 2 /* fts_children, names only */
+#define FTS_BREAD 3 /* fts_read */
+
+FTS *
+fts_open(char * const *argv, int options,
+ int (*compar)(const FTSENT **, const FTSENT **))
+{
+ FTS *sp;
+ FTSENT *p, *root;
+ int nitems;
+ FTSENT *parent, *prev;
+ char empty[1] = { '\0' };
+
+ /* Options check. */
+ if (options & ~FTS_OPTIONMASK) {
+ errno = EINVAL;
+ return (NULL);
+ }
+
+ /* At least one path must be specified. */
+ if (*argv == NULL) {
+ errno = EINVAL;
+ return (NULL);
+ }
+
+ /* Allocate/initialize the stream */
+ if ((sp = calloc(1, sizeof(FTS))) == NULL)
+ return (NULL);
+ sp->fts_compar = compar;
+ sp->fts_options = options;
+
+ /* Logical walks turn on NOCHDIR; symbolic links are too hard. */
+ if (FTS_ISSET(FTS_LOGICAL))
+ FTS_SET(FTS_NOCHDIR);
+
+ /*
+ * Start out with 1K of path space, and enough, in any case,
+ * to hold the user's paths.
+ */
+ if (fts_palloc(sp, FTS_MAX(fts_maxarglen(argv), PATH_MAX)))
+ goto mem1;
+
+ /* Allocate/initialize root's parent. */
+ if ((parent = fts_alloc(sp, empty, 0)) == NULL)
+ goto mem2;
+ parent->fts_level = FTS_ROOTPARENTLEVEL;
+
+ /* Allocate/initialize root(s). */
+ for (root = prev = NULL, nitems = 0; *argv; ++argv, ++nitems) {
+ if ((p = fts_alloc(sp, *argv, strlen(*argv))) == NULL)
+ goto mem3;
+ p->fts_level = FTS_ROOTLEVEL;
+ p->fts_parent = parent;
+ p->fts_accpath = p->fts_name;
+ p->fts_info = fts_stat(sp, p, FTS_ISSET(FTS_COMFOLLOW), -1);
+
+ /* Command-line "." and ".." are real directories. */
+ if (p->fts_info == FTS_DOT)
+ p->fts_info = FTS_D;
+
+ /*
+ * If comparison routine supplied, traverse in sorted
+ * order; otherwise traverse in the order specified.
+ */
+ if (compar) {
+ p->fts_link = root;
+ root = p;
+ } else {
+ p->fts_link = NULL;
+ if (root == NULL)
+ root = p;
+ else
+ prev->fts_link = p;
+ prev = p;
+ }
+ }
+ if (compar && nitems > 1)
+ root = fts_sort(sp, root, nitems);
+
+ /*
+ * Allocate a dummy pointer and make fts_read think that we've just
+ * finished the node before the root(s); set p->fts_info to FTS_INIT
+ * so that everything about the "current" node is ignored.
+ */
+ if ((sp->fts_cur = fts_alloc(sp, empty, 0)) == NULL)
+ goto mem3;
+ sp->fts_cur->fts_link = root;
+ sp->fts_cur->fts_info = FTS_INIT;
+
+ /*
+ * If using chdir(2), grab a file descriptor pointing to dot to ensure
+ * that we can get back here; this could be avoided for some paths,
+ * but almost certainly not worth the effort. Slashes, symbolic links,
+ * and ".." are all fairly nasty problems. Note, if we can't get the
+ * descriptor we run anyway, just more slowly.
+ */
+ if (!FTS_ISSET(FTS_NOCHDIR) &&
+ (sp->fts_rfd = open(".", O_RDONLY | O_CLOEXEC)) == -1)
+ FTS_SET(FTS_NOCHDIR);
+
+ if (nitems == 0)
+ free(parent);
+
+ return (sp);
+
+mem3: fts_lfree(root);
+ free(parent);
+mem2: free(sp->fts_path);
+mem1: free(sp);
+ return (NULL);
+}
+
+static void
+fts_load(FTS *sp, FTSENT *p)
+{
+ size_t len;
+ char *cp;
+
+ /*
+ * Load the stream structure for the next traversal. Since we don't
+ * actually enter the directory until after the preorder visit, set
+ * the fts_accpath field specially so the chdir gets done to the right
+ * place and the user can access the first node. From fts_open it's
+ * known that the path will fit.
+ */
+ len = p->fts_pathlen = p->fts_namelen;
+ memmove(sp->fts_path, p->fts_name, len + 1);
+ if ((cp = strrchr(p->fts_name, '/')) && (cp != p->fts_name || cp[1])) {
+ len = strlen(++cp);
+ memmove(p->fts_name, cp, len + 1);
+ p->fts_namelen = len;
+ }
+ p->fts_accpath = p->fts_path = sp->fts_path;
+ sp->fts_dev = p->fts_dev;
+}
+
+int
+fts_close(FTS *sp)
+{
+ FTSENT *freep, *p;
+ int rfd, error = 0;
+
+ /*
+ * This still works if we haven't read anything -- the dummy structure
+ * points to the root list, so we step through to the end of the root
+ * list which has a valid parent pointer.
+ */
+ if (sp->fts_cur) {
+ for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) {
+ freep = p;
+ p = p->fts_link ? p->fts_link : p->fts_parent;
+ free(freep);
+ }
+ free(p);
+ }
+
+ /* Stash the original directory fd if needed. */
+ rfd = FTS_ISSET(FTS_NOCHDIR) ? -1 : sp->fts_rfd;
+
+ /* Free up child linked list, sort array, path buffer, stream ptr.*/
+ if (sp->fts_child)
+ fts_lfree(sp->fts_child);
+ free(sp->fts_array);
+ free(sp->fts_path);
+ free(sp);
+
+ /* Return to original directory, checking for error. */
+ if (rfd != -1) {
+ int saved_errno;
+ error = fchdir(rfd);
+ saved_errno = errno;
+ (void)close(rfd);
+ errno = saved_errno;
+ }
+
+ return (error);
+}
+
+/*
+ * Special case of "/" at the end of the path so that slashes aren't
+ * appended which would cause paths to be written as "....//foo".
+ */
+#define NAPPEND(p) \
+ (p->fts_path[p->fts_pathlen - 1] == '/' \
+ ? p->fts_pathlen - 1 : p->fts_pathlen)
+
+FTSENT *
+fts_read(FTS *sp)
+{
+ FTSENT *p, *tmp;
+ int instr;
+ char *t;
+ char up[3] = { '.', '.', '\0' };
+ int saved_errno;
+
+ /* If finished or unrecoverable error, return NULL. */
+ if (sp->fts_cur == NULL || FTS_ISSET(FTS_STOP))
+ return (NULL);
+
+ /* Set current node pointer. */
+ p = sp->fts_cur;
+
+ /* Save and zero out user instructions. */
+ instr = p->fts_instr;
+ p->fts_instr = FTS_NOINSTR;
+
+ /* Any type of file may be re-visited; re-stat and re-turn. */
+ if (instr == FTS_AGAIN) {
+ p->fts_info = fts_stat(sp, p, 0, -1);
+ return (p);
+ }
+
+ /*
+ * Following a symlink -- SLNONE test allows application to see
+ * SLNONE and recover. If indirecting through a symlink, have
+ * keep a pointer to current location. If unable to get that
+ * pointer, follow fails.
+ */
+ if (instr == FTS_FOLLOW &&
+ (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE)) {
+ p->fts_info = fts_stat(sp, p, 1, -1);
+ if (p->fts_info == FTS_D && !FTS_ISSET(FTS_NOCHDIR)) {
+ if ((p->fts_symfd =
+ open(".", O_RDONLY | O_CLOEXEC)) == -1) {
+ p->fts_errno = errno;
+ p->fts_info = FTS_ERR;
+ } else
+ p->fts_flags |= FTS_SYMFOLLOW;
+ }
+ return (p);
+ }
+
+ /* Directory in pre-order. */
+ if (p->fts_info == FTS_D) {
+ /* If skipped or crossed mount point, do post-order visit. */
+ if (instr == FTS_SKIP ||
+ (FTS_ISSET(FTS_XDEV) && p->fts_dev != sp->fts_dev)) {
+ if (p->fts_flags & FTS_SYMFOLLOW)
+ (void)close(p->fts_symfd);
+ if (sp->fts_child) {
+ fts_lfree(sp->fts_child);
+ sp->fts_child = NULL;
+ }
+ p->fts_info = FTS_DP;
+ return (p);
+ }
+
+ /* Rebuild if only read the names and now traversing. */
+ if (sp->fts_child && FTS_ISSET(FTS_NAMEONLY)) {
+ FTS_CLR(FTS_NAMEONLY);
+ fts_lfree(sp->fts_child);
+ sp->fts_child = NULL;
+ }
+
+ /*
+ * Cd to the subdirectory.
+ *
+ * If have already read and now fail to chdir, whack the list
+ * to make the names come out right, and set the parent errno
+ * so the application will eventually get an error condition.
+ * Set the FTS_DONTCHDIR flag so that when we logically change
+ * directories back to the parent we don't do a chdir.
+ *
+ * If haven't read do so. If the read fails, fts_build sets
+ * FTS_STOP or the fts_info field of the node.
+ */
+ if (sp->fts_child) {
+ if (fts_safe_changedir(sp, p, -1, p->fts_accpath)) {
+ p->fts_errno = errno;
+ p->fts_flags |= FTS_DONTCHDIR;
+ for (p = sp->fts_child; p; p = p->fts_link)
+ p->fts_accpath =
+ p->fts_parent->fts_accpath;
+ }
+ } else if ((sp->fts_child = fts_build(sp, FTS_BREAD)) == NULL) {
+ if (FTS_ISSET(FTS_STOP))
+ return (NULL);
+ return (p);
+ }
+ p = sp->fts_child;
+ sp->fts_child = NULL;
+ goto name;
+ }
+
+ /* Move to the next node on this level. */
+next: tmp = p;
+ if ((p = p->fts_link)) {
+ free(tmp);
+
+ /*
+ * If reached the top, return to the original directory (or
+ * the root of the tree), and load the paths for the next root.
+ */
+ if (p->fts_level == FTS_ROOTLEVEL) {
+ if (FTS_FCHDIR(sp, sp->fts_rfd)) {
+ FTS_SET(FTS_STOP);
+ return (NULL);
+ }
+ fts_load(sp, p);
+ return (sp->fts_cur = p);
+ }
+
+ /*
+ * User may have called fts_set on the node. If skipped,
+ * ignore. If followed, get a file descriptor so we can
+ * get back if necessary.
+ */
+ if (p->fts_instr == FTS_SKIP)
+ goto next;
+ if (p->fts_instr == FTS_FOLLOW) {
+ p->fts_info = fts_stat(sp, p, 1, -1);
+ if (p->fts_info == FTS_D && !FTS_ISSET(FTS_NOCHDIR)) {
+ if ((p->fts_symfd =
+ open(".", O_RDONLY | O_CLOEXEC)) == -1) {
+ p->fts_errno = errno;
+ p->fts_info = FTS_ERR;
+ } else
+ p->fts_flags |= FTS_SYMFOLLOW;
+ }
+ p->fts_instr = FTS_NOINSTR;
+ }
+
+name: t = sp->fts_path + NAPPEND(p->fts_parent);
+ *t++ = '/';
+ memmove(t, p->fts_name, p->fts_namelen + 1);
+ return (sp->fts_cur = p);
+ }
+
+ /* Move up to the parent node. */
+ p = tmp->fts_parent;
+ free(tmp);
+
+ if (p->fts_level == FTS_ROOTPARENTLEVEL) {
+ /*
+ * Done; free everything up and set errno to 0 so the user
+ * can distinguish between error and EOF.
+ */
+ free(p);
+ errno = 0;
+ return (sp->fts_cur = NULL);
+ }
+
+ /* NUL terminate the pathname. */
+ sp->fts_path[p->fts_pathlen] = '\0';
+
+ /*
+ * Return to the parent directory. If at a root node or came through
+ * a symlink, go back through the file descriptor. Otherwise, cd up
+ * one directory.
+ */
+ if (p->fts_level == FTS_ROOTLEVEL) {
+ if (FTS_FCHDIR(sp, sp->fts_rfd)) {
+ FTS_SET(FTS_STOP);
+ sp->fts_cur = p;
+ return (NULL);
+ }
+ } else if (p->fts_flags & FTS_SYMFOLLOW) {
+ if (FTS_FCHDIR(sp, p->fts_symfd)) {
+ saved_errno = errno;
+ (void)close(p->fts_symfd);
+ errno = saved_errno;
+ FTS_SET(FTS_STOP);
+ sp->fts_cur = p;
+ return (NULL);
+ }
+ (void)close(p->fts_symfd);
+ } else if (!(p->fts_flags & FTS_DONTCHDIR) &&
+ fts_safe_changedir(sp, p->fts_parent, -1, up)) {
+ FTS_SET(FTS_STOP);
+ sp->fts_cur = p;
+ return (NULL);
+ }
+ p->fts_info = p->fts_errno ? FTS_ERR : FTS_DP;
+ return (sp->fts_cur = p);
+}
+
+/*
+ * Fts_set takes the stream as an argument although it's not used in this
+ * implementation; it would be necessary if anyone wanted to add global
+ * semantics to fts using fts_set. An error return is allowed for similar
+ * reasons.
+ */
+int
+fts_set(FTS *sp, FTSENT *p, int instr)
+{
+ if (instr && instr != FTS_AGAIN && instr != FTS_FOLLOW &&
+ instr != FTS_NOINSTR && instr != FTS_SKIP) {
+ errno = EINVAL;
+ return (1);
+ }
+ p->fts_instr = instr;
+ return (0);
+}
+
+FTSENT *
+fts_children(FTS *sp, int instr)
+{
+ FTSENT *p;
+ int fd;
+
+ if (instr && instr != FTS_NAMEONLY) {
+ errno = EINVAL;
+ return (NULL);
+ }
+
+ /* Set current node pointer. */
+ p = sp->fts_cur;
+
+ /*
+ * Errno set to 0 so user can distinguish empty directory from
+ * an error.
+ */
+ errno = 0;
+
+ /* Fatal errors stop here. */
+ if (FTS_ISSET(FTS_STOP))
+ return (NULL);
+
+ /* Return logical hierarchy of user's arguments. */
+ if (p->fts_info == FTS_INIT)
+ return (p->fts_link);
+
+ /*
+ * If not a directory being visited in pre-order, stop here. Could
+ * allow FTS_DNR, assuming the user has fixed the problem, but the
+ * same effect is available with FTS_AGAIN.
+ */
+ if (p->fts_info != FTS_D /* && p->fts_info != FTS_DNR */)
+ return (NULL);
+
+ /* Free up any previous child list. */
+ if (sp->fts_child)
+ fts_lfree(sp->fts_child);
+
+ if (instr == FTS_NAMEONLY) {
+ FTS_SET(FTS_NAMEONLY);
+ instr = FTS_BNAMES;
+ } else
+ instr = FTS_BCHILD;
+
+ /*
+ * If using chdir on a relative path and called BEFORE fts_read does
+ * its chdir to the root of a traversal, we can lose -- we need to
+ * chdir into the subdirectory, and we don't know where the current
+ * directory is, so we can't get back so that the upcoming chdir by
+ * fts_read will work.
+ */
+ if (p->fts_level != FTS_ROOTLEVEL || p->fts_accpath[0] == '/' ||
+ FTS_ISSET(FTS_NOCHDIR))
+ return (sp->fts_child = fts_build(sp, instr));
+
+ if ((fd = open(".", O_RDONLY | O_CLOEXEC)) == -1)
+ return (NULL);
+ sp->fts_child = fts_build(sp, instr);
+ if (fchdir(fd)) {
+ (void)close(fd);
+ return (NULL);
+ }
+ (void)close(fd);
+ return (sp->fts_child);
+}
+
+/*
+ * This is the tricky part -- do not casually change *anything* in here. The
+ * idea is to build the linked list of entries that are used by fts_children
+ * and fts_read. There are lots of special cases.
+ *
+ * The real slowdown in walking the tree is the stat calls. If FTS_NOSTAT is
+ * set and it's a physical walk (so that symbolic links can't be directories),
+ * we can do things quickly. First, if it's a 4.4BSD file system, the type
+ * of the file is in the directory entry. Otherwise, we assume that the number
+ * of subdirectories in a node is equal to the number of links to the parent.
+ * The former skips all stat calls. The latter skips stat calls in any leaf
+ * directories and for any files after the subdirectories in the directory have
+ * been found, cutting the stat calls by about 2/3.
+ */
+static FTSENT *
+fts_build(FTS *sp, int type)
+{
+ struct dirent *dp;
+ FTSENT *p, *head;
+ FTSENT *cur, *tail;
+ DIR *dirp;
+ void *oldaddr;
+ size_t len, maxlen, namlen;
+ int nitems, cderrno, descend, level, nlinks, nostat, doadjust;
+ int saved_errno;
+ char *cp;
+ char up[3] = { '.', '.', '\0' };
+
+ /* Set current node pointer. */
+ cur = sp->fts_cur;
+
+ /*
+ * Open the directory for reading. If this fails, we're done.
+ * If being called from fts_read, set the fts_info field.
+ */
+ if ((dirp = opendir(cur->fts_accpath)) == NULL) {
+ if (type == FTS_BREAD) {
+ cur->fts_info = FTS_DNR;
+ cur->fts_errno = errno;
+ }
+ return (NULL);
+ }
+
+ /*
+ * Nlinks is the number of possible entries of type directory in the
+ * directory if we're cheating on stat calls, 0 if we're not doing
+ * any stat calls at all, -1 if we're doing stats on everything.
+ */
+ if (type == FTS_BNAMES)
+ nlinks = 0;
+ else if (FTS_ISSET(FTS_NOSTAT) && FTS_ISSET(FTS_PHYSICAL)) {
+ nlinks = cur->fts_nlink - (FTS_ISSET(FTS_SEEDOT) ? 0 : 2);
+ nostat = 1;
+ } else {
+ nlinks = -1;
+ nostat = 0;
+ }
+
+#ifdef notdef
+ (void)printf("nlinks == %d (cur: %u)\n", nlinks, cur->fts_nlink);
+ (void)printf("NOSTAT %d PHYSICAL %d SEEDOT %d\n",
+ FTS_ISSET(FTS_NOSTAT), FTS_ISSET(FTS_PHYSICAL), FTS_ISSET(FTS_SEEDOT));
+#endif
+ /*
+ * If we're going to need to stat anything or we want to descend
+ * and stay in the directory, chdir. If this fails we keep going,
+ * but set a flag so we don't chdir after the post-order visit.
+ * We won't be able to stat anything, but we can still return the
+ * names themselves. Note, that since fts_read won't be able to
+ * chdir into the directory, it will have to return different path
+ * names than before, i.e. "a/b" instead of "b". Since the node
+ * has already been visited in pre-order, have to wait until the
+ * post-order visit to return the error. There is a special case
+ * here, if there was nothing to stat then it's not an error to
+ * not be able to stat. This is all fairly nasty. If a program
+ * needed sorted entries or stat information, they had better be
+ * checking FTS_NS on the returned nodes.
+ */
+ cderrno = 0;
+ if (nlinks || type == FTS_BREAD) {
+ if (fts_safe_changedir(sp, cur, dirfd(dirp), NULL)) {
+ if (nlinks && type == FTS_BREAD)
+ cur->fts_errno = errno;
+ cur->fts_flags |= FTS_DONTCHDIR;
+ descend = 0;
+ cderrno = errno;
+ (void)closedir(dirp);
+ dirp = NULL;
+ } else
+ descend = 1;
+ } else
+ descend = 0;
+
+ /*
+ * Figure out the max file name length that can be stored in the
+ * current path -- the inner loop allocates more path as necessary.
+ * We really wouldn't have to do the maxlen calculations here, we
+ * could do them in fts_read before returning the path, but it's a
+ * lot easier here since the length is part of the dirent structure.
+ *
+ * If not changing directories set a pointer so that can just append
+ * each new name into the path.
+ */
+ len = NAPPEND(cur);
+ if (FTS_ISSET(FTS_NOCHDIR)) {
+ cp = sp->fts_path + len;
+ *cp++ = '/';
+ }
+ len++;
+ maxlen = sp->fts_pathlen - len;
+
+ /*
+ * fts_level is signed so we must prevent it from wrapping
+ * around to FTS_ROOTLEVEL and FTS_ROOTPARENTLEVEL.
+ */
+ level = cur->fts_level;
+ if (level < FTS_MAXLEVEL)
+ level++;
+
+ /* Read the directory, attaching each entry to the `link' pointer. */
+ doadjust = 0;
+ for (head = tail = NULL, nitems = 0; dirp && (dp = readdir(dirp));) {
+ if (!FTS_ISSET(FTS_SEEDOT) && FTS_ISDOT(dp->d_name))
+ continue;
+
+ namlen = strlen(dp->d_name);
+
+ if (!(p = fts_alloc(sp, dp->d_name, namlen)))
+ goto mem1;
+ if (namlen >= maxlen) { /* include space for NUL */
+ oldaddr = sp->fts_path;
+ if (fts_palloc(sp, namlen +len + 1)) {
+ /*
+ * No more memory for path or structures. Save
+ * errno, free up the current structure and the
+ * structures already allocated.
+ */
+mem1: saved_errno = errno;
+ free(p);
+ fts_lfree(head);
+ (void)closedir(dirp);
+ cur->fts_info = FTS_ERR;
+ FTS_SET(FTS_STOP);
+ errno = saved_errno;
+ return (NULL);
+ }
+ /* Did realloc() change the pointer? */
+ if (oldaddr != sp->fts_path) {
+ doadjust = 1;
+ if (FTS_ISSET(FTS_NOCHDIR))
+ cp = sp->fts_path + len;
+ }
+ maxlen = sp->fts_pathlen - len;
+ }
+
+ p->fts_level = level;
+ p->fts_parent = sp->fts_cur;
+ p->fts_pathlen = len + namlen;
+ if (p->fts_pathlen < len) {
+ /*
+ * If we wrap, free up the current structure and
+ * the structures already allocated, then error
+ * out with ENAMETOOLONG.
+ */
+ free(p);
+ fts_lfree(head);
+ (void)closedir(dirp);
+ cur->fts_info = FTS_ERR;
+ FTS_SET(FTS_STOP);
+ errno = ENAMETOOLONG;
+ return (NULL);
+ }
+
+ if (cderrno) {
+ if (nlinks) {
+ p->fts_info = FTS_NS;
+ p->fts_errno = cderrno;
+ } else
+ p->fts_info = FTS_NSOK;
+ p->fts_accpath = cur->fts_accpath;
+ } else if (nlinks == 0
+#ifdef DT_DIR
+ || (nostat &&
+ dp->d_type != DT_DIR && dp->d_type != DT_UNKNOWN)
+#endif
+ ) {
+ p->fts_accpath =
+ FTS_ISSET(FTS_NOCHDIR) ? p->fts_path : p->fts_name;
+ p->fts_info = FTS_NSOK;
+ } else {
+ /* Build a file name for fts_stat to stat. */
+ if (FTS_ISSET(FTS_NOCHDIR)) {
+ p->fts_accpath = p->fts_path;
+ memmove(cp, p->fts_name, p->fts_namelen + 1);
+ p->fts_info = fts_stat(sp, p, 0, dirfd(dirp));
+ } else {
+ p->fts_accpath = p->fts_name;
+ p->fts_info = fts_stat(sp, p, 0, -1);
+ }
+
+ /* Decrement link count if applicable. */
+ if (nlinks > 0 && (p->fts_info == FTS_D ||
+ p->fts_info == FTS_DC || p->fts_info == FTS_DOT))
+ --nlinks;
+ }
+
+ /* We walk in directory order so "ls -f" doesn't get upset. */
+ p->fts_link = NULL;
+ if (head == NULL)
+ head = tail = p;
+ else {
+ tail->fts_link = p;
+ tail = p;
+ }
+ ++nitems;
+ }
+ if (dirp)
+ (void)closedir(dirp);
+
+ /*
+ * If realloc() changed the address of the path, adjust the
+ * addresses for the rest of the tree and the dir list.
+ */
+ if (doadjust)
+ fts_padjust(sp, head);
+
+ /*
+ * If not changing directories, reset the path back to original
+ * state.
+ */
+ if (FTS_ISSET(FTS_NOCHDIR)) {
+ if (len == sp->fts_pathlen || nitems == 0)
+ --cp;
+ *cp = '\0';
+ }
+
+ /*
+ * If descended after called from fts_children or after called from
+ * fts_read and nothing found, get back. At the root level we use
+ * the saved fd; if one of fts_open()'s arguments is a relative path
+ * to an empty directory, we wind up here with no other way back. If
+ * can't get back, we're done.
+ */
+ if (descend && (type == FTS_BCHILD || !nitems) &&
+ (cur->fts_level == FTS_ROOTLEVEL ? FTS_FCHDIR(sp, sp->fts_rfd) :
+ fts_safe_changedir(sp, cur->fts_parent, -1, up))) {
+ cur->fts_info = FTS_ERR;
+ FTS_SET(FTS_STOP);
+ return (NULL);
+ }
+
+ /* If didn't find anything, return NULL. */
+ if (!nitems) {
+ if (type == FTS_BREAD)
+ cur->fts_info = FTS_DP;
+ return (NULL);
+ }
+
+ /* Sort the entries. */
+ if (sp->fts_compar && nitems > 1)
+ head = fts_sort(sp, head, nitems);
+ return (head);
+}
+
+static u_short
+fts_stat(FTS *sp, FTSENT *p, int follow, int dfd)
+{
+ FTSENT *t;
+ dev_t dev;
+ ino_t ino;
+ struct stat *sbp, sb;
+ int saved_errno;
+ const char *path;
+
+ if (dfd == -1) {
+ path = p->fts_accpath;
+ dfd = AT_FDCWD;
+ } else
+ path = p->fts_name;
+
+ /* If user needs stat info, stat buffer already allocated. */
+ sbp = FTS_ISSET(FTS_NOSTAT) ? &sb : p->fts_statp;
+
+ /*
+ * If doing a logical walk, or application requested FTS_FOLLOW, do
+ * a stat(2). If that fails, check for a non-existent symlink. If
+ * fail, set the errno from the stat call.
+ */
+ if (FTS_ISSET(FTS_LOGICAL) || follow) {
+ if (fstatat(dfd, path, sbp, 0)) {
+ saved_errno = errno;
+ if (!fstatat(dfd, path, sbp, AT_SYMLINK_NOFOLLOW)) {
+ errno = 0;
+ return (FTS_SLNONE);
+ }
+ p->fts_errno = saved_errno;
+ goto err;
+ }
+ } else if (fstatat(dfd, path, sbp, AT_SYMLINK_NOFOLLOW)) {
+ p->fts_errno = errno;
+err: memset(sbp, 0, sizeof(struct stat));
+ return (FTS_NS);
+ }
+
+ if (S_ISDIR(sbp->st_mode)) {
+ /*
+ * Set the device/inode. Used to find cycles and check for
+ * crossing mount points. Also remember the link count, used
+ * in fts_build to limit the number of stat calls. It is
+ * understood that these fields are only referenced if fts_info
+ * is set to FTS_D.
+ */
+ dev = p->fts_dev = sbp->st_dev;
+ ino = p->fts_ino = sbp->st_ino;
+ p->fts_nlink = sbp->st_nlink;
+
+ if (FTS_ISDOT(p->fts_name))
+ return (FTS_DOT);
+
+ /*
+ * Cycle detection is done by brute force when the directory
+ * is first encountered. If the tree gets deep enough or the
+ * number of symbolic links to directories is high enough,
+ * something faster might be worthwhile.
+ */
+ for (t = p->fts_parent;
+ t->fts_level >= FTS_ROOTLEVEL; t = t->fts_parent)
+ if (ino == t->fts_ino && dev == t->fts_dev) {
+ p->fts_cycle = t;
+ return (FTS_DC);
+ }
+ return (FTS_D);
+ }
+ if (S_ISLNK(sbp->st_mode))
+ return (FTS_SL);
+ if (S_ISREG(sbp->st_mode))
+ return (FTS_F);
+ return (FTS_DEFAULT);
+}
+
+static FTSENT *
+fts_sort(FTS *sp, FTSENT *head, int nitems)
+{
+ FTSENT **ap, *p;
+
+ /*
+ * Construct an array of pointers to the structures and call qsort(3).
+ * Reassemble the array in the order returned by qsort. If unable to
+ * sort for memory reasons, return the directory entries in their
+ * current order. Allocate enough space for the current needs plus
+ * 40 so don't realloc one entry at a time.
+ */
+ if (nitems > sp->fts_nitems) {
+ struct _ftsent **a;
+
+ if ((a = reallocarray(sp->fts_array,
+ nitems + 40, sizeof(FTSENT *))) == NULL) {
+ free(sp->fts_array);
+ sp->fts_array = NULL;
+ sp->fts_nitems = 0;
+ return (head);
+ }
+ sp->fts_nitems = nitems + 40;
+ sp->fts_array = a;
+ }
+ for (ap = sp->fts_array, p = head; p; p = p->fts_link)
+ *ap++ = p;
+ qsort(sp->fts_array, nitems, sizeof(FTSENT *),
+ (int(*)(const void *, const void *))sp->fts_compar);
+ for (head = *(ap = sp->fts_array); --nitems; ++ap)
+ ap[0]->fts_link = ap[1];
+ ap[0]->fts_link = NULL;
+ return (head);
+}
+
+static FTSENT *
+fts_alloc(FTS *sp, char *name, size_t namelen)
+{
+ FTSENT *p;
+ size_t len;
+
+ /*
+ * The file name is a variable length array and no stat structure is
+ * necessary if the user has set the nostat bit. Allocate the FTSENT
+ * structure, the file name and the stat structure in one chunk, but
+ * be careful that the stat structure is reasonably aligned. Since the
+ * fts_name field is declared to be of size 1, the fts_name pointer is
+ * namelen + 2 before the first possible address of the stat structure.
+ */
+ len = sizeof(FTSENT) + namelen;
+ if (!FTS_ISSET(FTS_NOSTAT))
+ len += sizeof(struct stat) + FTS_ALIGNBYTES;
+ if ((p = calloc(1, len)) == NULL)
+ return (NULL);
+
+ p->fts_path = sp->fts_path;
+ p->fts_namelen = namelen;
+ p->fts_instr = FTS_NOINSTR;
+ if (!FTS_ISSET(FTS_NOSTAT))
+ p->fts_statp = (struct stat *)FTS_ALIGN(p->fts_name + namelen + 2);
+ memcpy(p->fts_name, name, namelen);
+
+ return (p);
+}
+
+static void
+fts_lfree(FTSENT *head)
+{
+ FTSENT *p;
+
+ /* Free a linked list of structures. */
+ while ((p = head)) {
+ head = head->fts_link;
+ free(p);
+ }
+}
+
+/*
+ * Allow essentially unlimited paths; find, rm, ls should all work on any tree.
+ * Most systems will allow creation of paths much longer than PATH_MAX, even
+ * though the kernel won't resolve them. Add the size (not just what's needed)
+ * plus 256 bytes so don't realloc the path 2 bytes at a time.
+ */
+static int
+fts_palloc(FTS *sp, size_t more)
+{
+ char *p;
+
+ /*
+ * Check for possible wraparound.
+ */
+ more += 256;
+ if (sp->fts_pathlen + more < sp->fts_pathlen) {
+ free(sp->fts_path);
+ sp->fts_path = NULL;
+ errno = ENAMETOOLONG;
+ return (1);
+ }
+ p = recallocarray(sp->fts_path, sp->fts_pathlen,
+ sp->fts_pathlen + more, 1);
+ if (p == NULL) {
+ free(sp->fts_path);
+ sp->fts_path = NULL;
+ return (1);
+ }
+ sp->fts_pathlen += more;
+ sp->fts_path = p;
+ return (0);
+}
+
+/*
+ * When the path is realloc'd, have to fix all of the pointers in structures
+ * already returned.
+ */
+static void
+fts_padjust(FTS *sp, FTSENT *head)
+{
+ FTSENT *p;
+ char *addr = sp->fts_path;
+
+#define ADJUST(p) { \
+ if ((p)->fts_accpath != (p)->fts_name) { \
+ (p)->fts_accpath = \
+ (char *)addr + ((p)->fts_accpath - (p)->fts_path); \
+ } \
+ (p)->fts_path = addr; \
+}
+ /* Adjust the current set of children. */
+ for (p = sp->fts_child; p; p = p->fts_link)
+ ADJUST(p);
+
+ /* Adjust the rest of the tree, including the current level. */
+ for (p = head; p->fts_level >= FTS_ROOTLEVEL;) {
+ ADJUST(p);
+ p = p->fts_link ? p->fts_link : p->fts_parent;
+ }
+}
+
+static size_t
+fts_maxarglen(char * const *argv)
+{
+ size_t len, max;
+
+ for (max = 0; *argv; ++argv)
+ if ((len = strlen(*argv)) > max)
+ max = len;
+ return (max + 1);
+}
+
+/*
+ * Change to dir specified by fd or p->fts_accpath without getting
+ * tricked by someone changing the world out from underneath us.
+ * Assumes p->fts_dev and p->fts_ino are filled in.
+ */
+static int
+fts_safe_changedir(FTS *sp, FTSENT *p, int fd, char *path)
+{
+ int ret, oerrno, newfd;
+ struct stat sb;
+
+ newfd = fd;
+ if (FTS_ISSET(FTS_NOCHDIR))
+ return (0);
+ if (fd == -1 && (newfd = open(path, O_RDONLY|O_DIRECTORY|O_CLOEXEC)) == -1)
+ return (-1);
+ if (fstat(newfd, &sb) == -1) {
+ ret = -1;
+ goto bail;
+ }
+ if (p->fts_dev != sb.st_dev || p->fts_ino != sb.st_ino) {
+ errno = ENOENT; /* disinformation */
+ ret = -1;
+ goto bail;
+ }
+ ret = fchdir(newfd);
+bail:
+ oerrno = errno;
+ if (fd == -1)
+ (void)close(newfd);
+ errno = oerrno;
+ return (ret);
+}
+#endif /* !HAVE_FTS */
+#if !HAVE_GETPROGNAME
+/*
+ * Copyright (c) 2016 Nicholas Marriott <nicholas.marriott@gmail.com>
+ * Copyright (c) 2017 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2020 Stephen Gregoratto <dev@sgregoratto.me>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+
+#include <errno.h>
+
+#if HAVE_GETEXECNAME
+#include <stdlib.h>
+const char *
+getprogname(void)
+{
+ return getexecname();
+}
+#elif HAVE_PROGRAM_INVOCATION_SHORT_NAME
+const char *
+getprogname(void)
+{
+ return (program_invocation_short_name);
+}
+#elif HAVE___PROGNAME
+const char *
+getprogname(void)
+{
+ extern char *__progname;
+
+ return (__progname);
+}
+#else
+#error No getprogname available.
+#endif
+#endif /* !HAVE_GETPROGNAME */
+#if !HAVE_MD5
+/*
+ * This code implements the MD5 message-digest algorithm.
+ * The algorithm is due to Ron Rivest. This code was
+ * written by Colin Plumb in 1993, no copyright is claimed.
+ * This code is in the public domain; do with it what you wish.
+ *
+ * Equivalent code is available from RSA Data Security, Inc.
+ * This code has been tested against that, and is equivalent,
+ * except that you don't need to include two pages of legalese
+ * with every copy.
+ *
+ * To compute the message digest of a chunk of bytes, declare an
+ * MD5Context structure, pass it to MD5Init, call MD5Update as
+ * needed on buffers full of bytes, and then call MD5Final, which
+ * will fill a supplied 16-byte array with the digest.
+ */
+
+#include <sys/types.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef BYTE_ORDER
+# if defined(LITTLE_ENDIAN) || defined(BIG_ENDIAN)
+# error Confusion in endian macros.
+# endif
+# if !defined(__BYTE_ORDER__)
+# error Byte order macro not found.
+# endif
+# if !defined(__ORDER_LITTLE_ENDIAN__) || !defined(__ORDER_BIG_ENDIAN__)
+# error Little/big endian macros not found.
+# endif
+# define BYTE_ORDER __BYTE_ORDER__
+# define LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
+# define BIG_ENDIAN __ORDER_BIG_ENDIAN__
+#endif /*!BYTE_ORDER*/
+
+#define PUT_64BIT_LE(cp, value) do { \
+ (cp)[7] = (value) >> 56; \
+ (cp)[6] = (value) >> 48; \
+ (cp)[5] = (value) >> 40; \
+ (cp)[4] = (value) >> 32; \
+ (cp)[3] = (value) >> 24; \
+ (cp)[2] = (value) >> 16; \
+ (cp)[1] = (value) >> 8; \
+ (cp)[0] = (value); } while (0)
+
+#define PUT_32BIT_LE(cp, value) do { \
+ (cp)[3] = (value) >> 24; \
+ (cp)[2] = (value) >> 16; \
+ (cp)[1] = (value) >> 8; \
+ (cp)[0] = (value); } while (0)
+
+static uint8_t PADDING[MD5_BLOCK_LENGTH] = {
+ 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+/*
+ * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
+ * initialization constants.
+ */
+void
+MD5Init(MD5_CTX *ctx)
+{
+ ctx->count = 0;
+ ctx->state[0] = 0x67452301;
+ ctx->state[1] = 0xefcdab89;
+ ctx->state[2] = 0x98badcfe;
+ ctx->state[3] = 0x10325476;
+}
+
+/*
+ * Update context to reflect the concatenation of another buffer full
+ * of bytes.
+ */
+void
+MD5Update(MD5_CTX *ctx, const unsigned char *input, size_t len)
+{
+ size_t have, need;
+
+ /* Check how many bytes we already have and how many more we need. */
+ have = (size_t)((ctx->count >> 3) & (MD5_BLOCK_LENGTH - 1));
+ need = MD5_BLOCK_LENGTH - have;
+
+ /* Update bitcount */
+ ctx->count += (uint64_t)len << 3;
+
+ if (len >= need) {
+ if (have != 0) {
+ memcpy(ctx->buffer + have, input, need);
+ MD5Transform(ctx->state, ctx->buffer);
+ input += need;
+ len -= need;
+ have = 0;
+ }
+
+ /* Process data in MD5_BLOCK_LENGTH-byte chunks. */
+ while (len >= MD5_BLOCK_LENGTH) {
+ MD5Transform(ctx->state, input);
+ input += MD5_BLOCK_LENGTH;
+ len -= MD5_BLOCK_LENGTH;
+ }
+ }
+
+ /* Handle any remaining bytes of data. */
+ if (len != 0)
+ memcpy(ctx->buffer + have, input, len);
+}
+
+/*
+ * Pad pad to 64-byte boundary with the bit pattern
+ * 1 0* (64-bit count of bits processed, MSB-first)
+ */
+void
+MD5Pad(MD5_CTX *ctx)
+{
+ uint8_t count[8];
+ size_t padlen;
+
+ /* Convert count to 8 bytes in little endian order. */
+ PUT_64BIT_LE(count, ctx->count);
+
+ /* Pad out to 56 mod 64. */
+ padlen = MD5_BLOCK_LENGTH -
+ ((ctx->count >> 3) & (MD5_BLOCK_LENGTH - 1));
+ if (padlen < 1 + 8)
+ padlen += MD5_BLOCK_LENGTH;
+ MD5Update(ctx, PADDING, padlen - 8); /* padlen - 8 <= 64 */
+ MD5Update(ctx, count, 8);
+}
+
+/*
+ * Final wrapup--call MD5Pad, fill in digest and zero out ctx.
+ */
+void
+MD5Final(unsigned char digest[MD5_DIGEST_LENGTH], MD5_CTX *ctx)
+{
+ int i;
+
+ MD5Pad(ctx);
+ for (i = 0; i < 4; i++)
+ PUT_32BIT_LE(digest + i * 4, ctx->state[i]);
+ memset(ctx, 0, sizeof(*ctx));
+}
+
+
+/* The four core functions - F1 is optimized somewhat */
+
+/* #define F1(x, y, z) (x & y | ~x & z) */
+#define F1(x, y, z) (z ^ (x & (y ^ z)))
+#define F2(x, y, z) F1(z, x, y)
+#define F3(x, y, z) (x ^ y ^ z)
+#define F4(x, y, z) (y ^ (x | ~z))
+
+/* This is the central step in the MD5 algorithm. */
+#define MD5STEP(f, w, x, y, z, data, s) \
+ ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
+
+/*
+ * The core of the MD5 algorithm, this alters an existing MD5 hash to
+ * reflect the addition of 16 longwords of new data. MD5Update blocks
+ * the data and converts bytes into longwords for this routine.
+ */
+void
+MD5Transform(uint32_t state[4], const uint8_t block[MD5_BLOCK_LENGTH])
+{
+ uint32_t a, b, c, d, in[MD5_BLOCK_LENGTH / 4];
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+ memcpy(in, block, sizeof(in));
+#else
+ for (a = 0; a < MD5_BLOCK_LENGTH / 4; a++) {
+ in[a] = (uint32_t)(
+ (uint32_t)(block[a * 4 + 0]) |
+ (uint32_t)(block[a * 4 + 1]) << 8 |
+ (uint32_t)(block[a * 4 + 2]) << 16 |
+ (uint32_t)(block[a * 4 + 3]) << 24);
+ }
+#endif
+
+ a = state[0];
+ b = state[1];
+ c = state[2];
+ d = state[3];
+
+ MD5STEP(F1, a, b, c, d, in[ 0] + 0xd76aa478, 7);
+ MD5STEP(F1, d, a, b, c, in[ 1] + 0xe8c7b756, 12);
+ MD5STEP(F1, c, d, a, b, in[ 2] + 0x242070db, 17);
+ MD5STEP(F1, b, c, d, a, in[ 3] + 0xc1bdceee, 22);
+ MD5STEP(F1, a, b, c, d, in[ 4] + 0xf57c0faf, 7);
+ MD5STEP(F1, d, a, b, c, in[ 5] + 0x4787c62a, 12);
+ MD5STEP(F1, c, d, a, b, in[ 6] + 0xa8304613, 17);
+ MD5STEP(F1, b, c, d, a, in[ 7] + 0xfd469501, 22);
+ MD5STEP(F1, a, b, c, d, in[ 8] + 0x698098d8, 7);
+ MD5STEP(F1, d, a, b, c, in[ 9] + 0x8b44f7af, 12);
+ MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
+ MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
+ MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
+ MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
+ MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
+ MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
+
+ MD5STEP(F2, a, b, c, d, in[ 1] + 0xf61e2562, 5);
+ MD5STEP(F2, d, a, b, c, in[ 6] + 0xc040b340, 9);
+ MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
+ MD5STEP(F2, b, c, d, a, in[ 0] + 0xe9b6c7aa, 20);
+ MD5STEP(F2, a, b, c, d, in[ 5] + 0xd62f105d, 5);
+ MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
+ MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
+ MD5STEP(F2, b, c, d, a, in[ 4] + 0xe7d3fbc8, 20);
+ MD5STEP(F2, a, b, c, d, in[ 9] + 0x21e1cde6, 5);
+ MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
+ MD5STEP(F2, c, d, a, b, in[ 3] + 0xf4d50d87, 14);
+ MD5STEP(F2, b, c, d, a, in[ 8] + 0x455a14ed, 20);
+ MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
+ MD5STEP(F2, d, a, b, c, in[ 2] + 0xfcefa3f8, 9);
+ MD5STEP(F2, c, d, a, b, in[ 7] + 0x676f02d9, 14);
+ MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
+
+ MD5STEP(F3, a, b, c, d, in[ 5] + 0xfffa3942, 4);
+ MD5STEP(F3, d, a, b, c, in[ 8] + 0x8771f681, 11);
+ MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
+ MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
+ MD5STEP(F3, a, b, c, d, in[ 1] + 0xa4beea44, 4);
+ MD5STEP(F3, d, a, b, c, in[ 4] + 0x4bdecfa9, 11);
+ MD5STEP(F3, c, d, a, b, in[ 7] + 0xf6bb4b60, 16);
+ MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
+ MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
+ MD5STEP(F3, d, a, b, c, in[ 0] + 0xeaa127fa, 11);
+ MD5STEP(F3, c, d, a, b, in[ 3] + 0xd4ef3085, 16);
+ MD5STEP(F3, b, c, d, a, in[ 6] + 0x04881d05, 23);
+ MD5STEP(F3, a, b, c, d, in[ 9] + 0xd9d4d039, 4);
+ MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
+ MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
+ MD5STEP(F3, b, c, d, a, in[2 ] + 0xc4ac5665, 23);
+
+ MD5STEP(F4, a, b, c, d, in[ 0] + 0xf4292244, 6);
+ MD5STEP(F4, d, a, b, c, in[7 ] + 0x432aff97, 10);
+ MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
+ MD5STEP(F4, b, c, d, a, in[5 ] + 0xfc93a039, 21);
+ MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
+ MD5STEP(F4, d, a, b, c, in[3 ] + 0x8f0ccc92, 10);
+ MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
+ MD5STEP(F4, b, c, d, a, in[1 ] + 0x85845dd1, 21);
+ MD5STEP(F4, a, b, c, d, in[8 ] + 0x6fa87e4f, 6);
+ MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
+ MD5STEP(F4, c, d, a, b, in[6 ] + 0xa3014314, 15);
+ MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
+ MD5STEP(F4, a, b, c, d, in[4 ] + 0xf7537e82, 6);
+ MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
+ MD5STEP(F4, c, d, a, b, in[2 ] + 0x2ad7d2bb, 15);
+ MD5STEP(F4, b, c, d, a, in[9 ] + 0xeb86d391, 21);
+
+ state[0] += a;
+ state[1] += b;
+ state[2] += c;
+ state[3] += d;
+}
+
+char *
+MD5End(MD5_CTX *ctx, char *buf)
+{
+ int i;
+ unsigned char digest[MD5_DIGEST_LENGTH];
+ static const char hex[]="0123456789abcdef";
+
+ if (!buf)
+ buf = malloc(2*MD5_DIGEST_LENGTH + 1);
+ if (!buf)
+ return 0;
+ MD5Final(digest, ctx);
+ for (i = 0; i < MD5_DIGEST_LENGTH; i++) {
+ buf[i+i] = hex[digest[i] >> 4];
+ buf[i+i+1] = hex[digest[i] & 0x0f];
+ }
+ buf[i+i] = '\0';
+ return buf;
+}
+#endif /* !HAVE_MD5 */
+#if !HAVE_MEMMEM
+/*-
+ * Copyright (c) 2005 Pascal Gloor <pascal.gloor@spale.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+/*
+ * Find the first occurrence of the byte string s in byte string l.
+ */
+void *
+memmem(const void *l, size_t l_len, const void *s, size_t s_len)
+{
+ const char *cur, *last;
+ const char *cl = l;
+ const char *cs = s;
+
+ /* a zero length needle should just return the haystack */
+ if (l_len == 0)
+ return (void *)cl;
+
+ /* "s" must be smaller or equal to "l" */
+ if (l_len < s_len)
+ return NULL;
+
+ /* special case where s_len == 1 */
+ if (s_len == 1)
+ return memchr(l, *cs, l_len);
+
+ /* the last position where its possible to find "s" in "l" */
+ last = cl + l_len - s_len;
+
+ for (cur = cl; cur <= last; cur++)
+ if (cur[0] == cs[0] && memcmp(cur, cs, s_len) == 0)
+ return (void *)cur;
+
+ return NULL;
+}
+#endif /* !HAVE_MEMMEM */
+#if !HAVE_MEMRCHR
+/*
+ * Copyright (c) 2007 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#include <string.h>
+
+/*
+ * Reverse memchr()
+ * Find the last occurrence of 'c' in the buffer 's' of size 'n'.
+ */
+void *
+memrchr(const void *s, int c, size_t n)
+{
+ const unsigned char *cp;
+
+ if (n != 0) {
+ cp = (unsigned char *)s + n;
+ do {
+ if (*(--cp) == (unsigned char)c)
+ return((void *)cp);
+ } while (--n != 0);
+ }
+ return(NULL);
+}
+#endif /* !HAVE_MEMRCHR */
+#if !HAVE_MKFIFOAT
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+int
+mkfifoat(int fd, const char *path, mode_t mode)
+{
+ int er, curfd = -1, newfd = -1;
+
+ /* Get our current directory then switch to the given one. */
+
+ if (fd != AT_FDCWD) {
+ if ((curfd = open(".", O_RDONLY | O_DIRECTORY, 0)) == -1)
+ return -1;
+ if (fchdir(fd) == -1)
+ goto out;
+ }
+
+ if ((newfd = mkfifo(path, mode)) == -1)
+ goto out;
+
+ /* This leaves the fifo if it fails. */
+
+ if (curfd != -1 && fchdir(curfd) == -1)
+ goto out;
+ if (curfd != -1)
+ close(curfd);
+
+ return newfd;
+out:
+ /* Ignore errors in close(2). */
+
+ er = errno;
+ if (curfd != -1)
+ fchdir(curfd);
+ if (curfd != -1)
+ close(curfd);
+ if (newfd != -1)
+ close(newfd);
+ errno = er;
+ return -1;
+}
+#endif /* !HAVE_MKFIFOAT */
+#if !HAVE_MKNODAT
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+int
+mknodat(int fd, const char *path, mode_t mode, dev_t dev)
+{
+ int er, curfd = -1, newfd = -1;
+
+ /* Get our current directory then switch to the given one. */
+
+ if (fd != AT_FDCWD) {
+ if ((curfd = open(".", O_RDONLY | O_DIRECTORY, 0)) == -1)
+ return -1;
+ if (fchdir(fd) == -1)
+ goto out;
+ }
+
+ if ((newfd = mknod(path, mode, dev)) == -1)
+ goto out;
+
+ /* This leaves the node if it fails. */
+
+ if (curfd != -1 && fchdir(curfd) == -1)
+ goto out;
+ if (curfd != -1)
+ close(curfd);
+
+ return newfd;
+out:
+
+ /* Ignore errors in close(2). */
+
+ er = errno;
+ if (curfd != -1)
+ fchdir(curfd);
+ if (curfd != -1)
+ close(curfd);
+ if (newfd != -1)
+ close(newfd);
+ errno = er;
+ return -1;
+}
+#endif /* !HAVE_MKNODAT */
+#if !HAVE_READPASSPHRASE
+/*
+ * Original: readpassphrase.c in OpenSSH portable
+ */
+/*
+ * Copyright (c) 2000-2002, 2007, 2010
+ * Todd C. Miller <millert@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <paths.h>
+#include <pwd.h>
+#include <signal.h>
+#include <string.h>
+#include <termios.h>
+#include <unistd.h>
+
+#if !defined(_NSIG) && defined(NSIG)
+# define _NSIG NSIG
+#endif
+
+static volatile sig_atomic_t readpassphrase_signo[_NSIG];
+
+static void
+readpassphrase_handler(int s)
+{
+
+ readpassphrase_signo[s] = 1;
+}
+
+char *
+readpassphrase(const char *prompt, char *buf, size_t bufsiz, int flags)
+{
+ ssize_t nr;
+ int input, output, save_errno, i, need_restart;
+ char ch, *p, *end;
+ struct termios term, oterm;
+ struct sigaction sa, savealrm, saveint, savehup, savequit, saveterm;
+ struct sigaction savetstp, savettin, savettou, savepipe;
+/* If we don't have TCSASOFT define it so that ORing it it below is a no-op. */
+#ifndef TCSASOFT
+ const int tcasoft = 0;
+#else
+ const int tcasoft = TCSASOFT;
+#endif
+
+ /* I suppose we could alloc on demand in this case (XXX). */
+ if (bufsiz == 0) {
+ errno = EINVAL;
+ return(NULL);
+ }
+
+restart:
+ for (i = 0; i < _NSIG; i++)
+ readpassphrase_signo[i] = 0;
+ nr = -1;
+ save_errno = 0;
+ need_restart = 0;
+ /*
+ * Read and write to /dev/tty if available. If not, read from
+ * stdin and write to stderr unless a tty is required.
+ */
+ if ((flags & RPP_STDIN) ||
+ (input = output = open(_PATH_TTY, O_RDWR)) == -1) {
+ if (flags & RPP_REQUIRE_TTY) {
+ errno = ENOTTY;
+ return(NULL);
+ }
+ input = STDIN_FILENO;
+ output = STDERR_FILENO;
+ }
+
+ /*
+ * Turn off echo if possible.
+ * If we are using a tty but are not the foreground pgrp this will
+ * generate SIGTTOU, so do it *before* installing the signal handlers.
+ */
+ if (input != STDIN_FILENO && tcgetattr(input, &oterm) == 0) {
+ memcpy(&term, &oterm, sizeof(term));
+ if (!(flags & RPP_ECHO_ON))
+ term.c_lflag &= ~(ECHO | ECHONL);
+#ifdef VSTATUS
+ if (term.c_cc[VSTATUS] != _POSIX_VDISABLE)
+ term.c_cc[VSTATUS] = _POSIX_VDISABLE;
+#endif
+ (void)tcsetattr(input, TCSAFLUSH|tcasoft, &term);
+ } else {
+ memset(&term, 0, sizeof(term));
+ term.c_lflag |= ECHO;
+ memset(&oterm, 0, sizeof(oterm));
+ oterm.c_lflag |= ECHO;
+ }
+
+ /*
+ * Catch signals that would otherwise cause the user to end
+ * up with echo turned off in the shell. Don't worry about
+ * things like SIGXCPU and SIGVTALRM for now.
+ */
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = 0; /* don't restart system calls */
+ sa.sa_handler = readpassphrase_handler;
+ (void)sigaction(SIGALRM, &sa, &savealrm);
+ (void)sigaction(SIGHUP, &sa, &savehup);
+ (void)sigaction(SIGINT, &sa, &saveint);
+ (void)sigaction(SIGPIPE, &sa, &savepipe);
+ (void)sigaction(SIGQUIT, &sa, &savequit);
+ (void)sigaction(SIGTERM, &sa, &saveterm);
+ (void)sigaction(SIGTSTP, &sa, &savetstp);
+ (void)sigaction(SIGTTIN, &sa, &savettin);
+ (void)sigaction(SIGTTOU, &sa, &savettou);
+
+ if (!(flags & RPP_STDIN))
+ (void)write(output, prompt, strlen(prompt));
+ end = buf + bufsiz - 1;
+ p = buf;
+ while ((nr = read(input, &ch, 1)) == 1 && ch != '\n' && ch != '\r') {
+ if (p < end) {
+ if ((flags & RPP_SEVENBIT))
+ ch &= 0x7f;
+ if (isalpha((unsigned char)ch)) {
+ if ((flags & RPP_FORCELOWER))
+ ch = (char)tolower((unsigned char)ch);
+ if ((flags & RPP_FORCEUPPER))
+ ch = (char)toupper((unsigned char)ch);
+ }
+ *p++ = ch;
+ }
+ }
+ *p = '\0';
+ save_errno = errno;
+ if (!(term.c_lflag & ECHO))
+ (void)write(output, "\n", 1);
+
+ /* Restore old terminal settings and signals. */
+ if (memcmp(&term, &oterm, sizeof(term)) != 0) {
+ const int sigttou = readpassphrase_signo[SIGTTOU];
+
+ /* Ignore SIGTTOU generated when we are not the fg pgrp. */
+ while (tcsetattr(input, TCSAFLUSH|tcasoft, &oterm) == -1 &&
+ errno == EINTR && !readpassphrase_signo[SIGTTOU])
+ continue;
+ readpassphrase_signo[SIGTTOU] = sigttou;
+ }
+ (void)sigaction(SIGALRM, &savealrm, NULL);
+ (void)sigaction(SIGHUP, &savehup, NULL);
+ (void)sigaction(SIGINT, &saveint, NULL);
+ (void)sigaction(SIGQUIT, &savequit, NULL);
+ (void)sigaction(SIGPIPE, &savepipe, NULL);
+ (void)sigaction(SIGTERM, &saveterm, NULL);
+ (void)sigaction(SIGTSTP, &savetstp, NULL);
+ (void)sigaction(SIGTTIN, &savettin, NULL);
+ (void)sigaction(SIGTTOU, &savettou, NULL);
+ if (input != STDIN_FILENO)
+ (void)close(input);
+
+ /*
+ * If we were interrupted by a signal, resend it to ourselves
+ * now that we have restored the signal handlers.
+ */
+ for (i = 0; i < _NSIG; i++) {
+ if (readpassphrase_signo[i]) {
+ kill(getpid(), i);
+ switch (i) {
+ case SIGTSTP:
+ case SIGTTIN:
+ case SIGTTOU:
+ need_restart = 1;
+ }
+ }
+ }
+ if (need_restart)
+ goto restart;
+
+ if (save_errno)
+ errno = save_errno;
+ return(nr == -1 ? NULL : buf);
+}
+#endif /* !HAVE_READPASSPHRASE */
+#if !HAVE_REALLOCARRAY
+/*
+ * Copyright (c) 2008 Otto Moerbeek <otto@drijf.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <errno.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+/*
+ * This is sqrt(SIZE_MAX+1), as s1*s2 <= SIZE_MAX
+ * if both s1 < MUL_NO_OVERFLOW and s2 < MUL_NO_OVERFLOW
+ */
+#define MUL_NO_OVERFLOW ((size_t)1 << (sizeof(size_t) * 4))
+
+void *
+reallocarray(void *optr, size_t nmemb, size_t size)
+{
+ if ((nmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) &&
+ nmemb > 0 && SIZE_MAX / nmemb < size) {
+ errno = ENOMEM;
+ return NULL;
+ }
+ return realloc(optr, size * nmemb);
+}
+#endif /* !HAVE_REALLOCARRAY */
+#if !HAVE_RECALLOCARRAY
+/*
+ * Copyright (c) 2008, 2017 Otto Moerbeek <otto@drijf.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* OPENBSD ORIGINAL: lib/libc/stdlib/recallocarray.c */
+
+#include <errno.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+
+/*
+ * This is sqrt(SIZE_MAX+1), as s1*s2 <= SIZE_MAX
+ * if both s1 < MUL_NO_OVERFLOW and s2 < MUL_NO_OVERFLOW
+ */
+#define MUL_NO_OVERFLOW ((size_t)1 << (sizeof(size_t) * 4))
+
+void *
+recallocarray(void *ptr, size_t oldnmemb, size_t newnmemb, size_t size)
+{
+ size_t oldsize, newsize;
+ void *newptr;
+
+ if (ptr == NULL)
+ return calloc(newnmemb, size);
+
+ if ((newnmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) &&
+ newnmemb > 0 && SIZE_MAX / newnmemb < size) {
+ errno = ENOMEM;
+ return NULL;
+ }
+ newsize = newnmemb * size;
+
+ if ((oldnmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) &&
+ oldnmemb > 0 && SIZE_MAX / oldnmemb < size) {
+ errno = EINVAL;
+ return NULL;
+ }
+ oldsize = oldnmemb * size;
+
+ /*
+ * Don't bother too much if we're shrinking just a bit,
+ * we do not shrink for series of small steps, oh well.
+ */
+ if (newsize <= oldsize) {
+ size_t d = oldsize - newsize;
+
+ if (d < oldsize / 2 && d < (size_t)getpagesize()) {
+ memset((char *)ptr + newsize, 0, d);
+ return ptr;
+ }
+ }
+
+ newptr = malloc(newsize);
+ if (newptr == NULL)
+ return NULL;
+
+ if (newsize > oldsize) {
+ memcpy(newptr, ptr, oldsize);
+ memset((char *)newptr + oldsize, 0, newsize - oldsize);
+ } else
+ memcpy(newptr, ptr, newsize);
+
+ explicit_bzero(ptr, oldsize);
+ free(ptr);
+
+ return newptr;
+}
+#endif /* !HAVE_RECALLOCARRAY */
+#if !HAVE_SETRESGID
+/*
+ * Copyright (c) 2004, 2005 Darren Tucker (dtucker at zip com au).
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <unistd.h>
+
+int
+setresgid(gid_t rgid, gid_t egid, gid_t sgid)
+{
+ /* this is the only configuration tested */
+
+ if (rgid != egid || egid != sgid)
+ return -1;
+
+ if (setregid(rgid, egid) == -1)
+ return -1;
+
+ return 0;
+}
+#endif /* !HAVE_SETRESGID */
+#if !HAVE_SETRESUID
+/*
+ * Copyright (c) 2004, 2005 Darren Tucker (dtucker at zip com au).
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <unistd.h>
+
+int
+setresuid(uid_t ruid, uid_t euid, uid_t suid)
+{
+ uid_t ouid;
+ int ret = -1;
+
+ /* Allow only the tested configuration. */
+
+ if (ruid != euid || euid != suid) {
+ errno = ENOSYS;
+ return -1;
+ }
+ ouid = getuid();
+
+ if ((ret = setreuid(euid, euid)) == -1)
+ return -1;
+
+ /*
+ * When real, effective and saved uids are the same and we have
+ * changed uids, sanity check that we cannot restore the old uid.
+ */
+
+ if (ruid == euid && euid == suid && ouid != ruid &&
+ setuid(ouid) != -1 && seteuid(ouid) != -1) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ /*
+ * Finally, check that the real and effective uids are what we
+ * expect.
+ */
+ if (getuid() != ruid || geteuid() != euid) {
+ errno = EACCES;
+ return -1;
+ }
+
+ return ret;
+}
+#endif /* !HAVE_SETRESUID */
+#if !HAVE_SHA2_H
+/* $OpenBSD$ */
+
+/*
+ * FILE: sha2.c
+ * AUTHOR: Aaron D. Gifford <me@aarongifford.com>
+ *
+ * Copyright (c) 2000-2001, Aaron D. Gifford
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTOR(S) ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTOR(S) BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $From: sha2.c,v 1.1 2001/11/08 00:01:51 adg Exp adg $
+ */
+
+/* OPENBSD ORIGINAL: lib/libc/hash/sha2.c */
+
+/* no-op out, similar to DEF_WEAK but only needed here */
+#define MAKE_CLONE(x, y) void __ssh_compat_make_clone_##x_##y(void)
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#ifndef MINIMUM
+# define MINIMUM(a, b) (((a) < (b)) ? (a) : (b))
+#endif
+
+#ifndef BYTE_ORDER
+# if defined(LITTLE_ENDIAN) || defined(BIG_ENDIAN)
+# error Confusion in endian macros.
+# endif
+# if !defined(__BYTE_ORDER__)
+# error Byte order macro not found.
+# endif
+# if !defined(__ORDER_LITTLE_ENDIAN__) || !defined(__ORDER_BIG_ENDIAN__)
+# error Little/big endian macros not found.
+# endif
+# define BYTE_ORDER __BYTE_ORDER__
+# define LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
+# define BIG_ENDIAN __ORDER_BIG_ENDIAN__
+#endif /*!BYTE_ORDER*/
+
+/*
+ * UNROLLED TRANSFORM LOOP NOTE:
+ * You can define SHA2_UNROLL_TRANSFORM to use the unrolled transform
+ * loop version for the hash transform rounds (defined using macros
+ * later in this file). Either define on the command line, for example:
+ *
+ * cc -DSHA2_UNROLL_TRANSFORM -o sha2 sha2.c sha2prog.c
+ *
+ * or define below:
+ *
+ * #define SHA2_UNROLL_TRANSFORM
+ *
+ */
+#if defined(__amd64__) || defined(__i386__)
+#define SHA2_UNROLL_TRANSFORM
+#endif
+
+/*** SHA-224/256/384/512 Machine Architecture Definitions *****************/
+/*
+ * BYTE_ORDER NOTE:
+ *
+ * Please make sure that your system defines BYTE_ORDER. If your
+ * architecture is little-endian, make sure it also defines
+ * LITTLE_ENDIAN and that the two (BYTE_ORDER and LITTLE_ENDIAN) are
+ * equivalent.
+ *
+ * If your system does not define the above, then you can do so by
+ * hand like this:
+ *
+ * #define LITTLE_ENDIAN 1234
+ * #define BIG_ENDIAN 4321
+ *
+ * And for little-endian machines, add:
+ *
+ * #define BYTE_ORDER LITTLE_ENDIAN
+ *
+ * Or for big-endian machines:
+ *
+ * #define BYTE_ORDER BIG_ENDIAN
+ *
+ * The FreeBSD machine this was written on defines BYTE_ORDER
+ * appropriately by including <sys/types.h> (which in turn includes
+ * <machine/endian.h> where the appropriate definitions are actually
+ * made).
+ */
+#if !defined(BYTE_ORDER) || (BYTE_ORDER != LITTLE_ENDIAN && BYTE_ORDER != BIG_ENDIAN)
+#error Define BYTE_ORDER to be equal to either LITTLE_ENDIAN or BIG_ENDIAN
+#endif
+
+
+/*** SHA-224/256/384/512 Various Length Definitions ***********************/
+/* NOTE: Most of these are in sha2.h */
+#define SHA224_SHORT_BLOCK_LENGTH (SHA224_BLOCK_LENGTH - 8)
+#define SHA256_SHORT_BLOCK_LENGTH (SHA256_BLOCK_LENGTH - 8)
+#define SHA384_SHORT_BLOCK_LENGTH (SHA384_BLOCK_LENGTH - 16)
+#define SHA512_SHORT_BLOCK_LENGTH (SHA512_BLOCK_LENGTH - 16)
+
+/*** ENDIAN SPECIFIC COPY MACROS **************************************/
+#define BE_8_TO_32(dst, cp) do { \
+ (dst) = (uint32_t)(cp)[3] | ((uint32_t)(cp)[2] << 8) | \
+ ((uint32_t)(cp)[1] << 16) | ((uint32_t)(cp)[0] << 24); \
+} while(0)
+
+#define BE_8_TO_64(dst, cp) do { \
+ (dst) = (uint64_t)(cp)[7] | ((uint64_t)(cp)[6] << 8) | \
+ ((uint64_t)(cp)[5] << 16) | ((uint64_t)(cp)[4] << 24) | \
+ ((uint64_t)(cp)[3] << 32) | ((uint64_t)(cp)[2] << 40) | \
+ ((uint64_t)(cp)[1] << 48) | ((uint64_t)(cp)[0] << 56); \
+} while (0)
+
+#define BE_64_TO_8(cp, src) do { \
+ (cp)[0] = (src) >> 56; \
+ (cp)[1] = (src) >> 48; \
+ (cp)[2] = (src) >> 40; \
+ (cp)[3] = (src) >> 32; \
+ (cp)[4] = (src) >> 24; \
+ (cp)[5] = (src) >> 16; \
+ (cp)[6] = (src) >> 8; \
+ (cp)[7] = (src); \
+} while (0)
+
+#define BE_32_TO_8(cp, src) do { \
+ (cp)[0] = (src) >> 24; \
+ (cp)[1] = (src) >> 16; \
+ (cp)[2] = (src) >> 8; \
+ (cp)[3] = (src); \
+} while (0)
+
+/*
+ * Macro for incrementally adding the unsigned 64-bit integer n to the
+ * unsigned 128-bit integer (represented using a two-element array of
+ * 64-bit words):
+ */
+#define ADDINC128(w,n) do { \
+ (w)[0] += (uint64_t)(n); \
+ if ((w)[0] < (n)) { \
+ (w)[1]++; \
+ } \
+} while (0)
+
+/*** THE SIX LOGICAL FUNCTIONS ****************************************/
+/*
+ * Bit shifting and rotation (used by the six SHA-XYZ logical functions:
+ *
+ * NOTE: The naming of R and S appears backwards here (R is a SHIFT and
+ * S is a ROTATION) because the SHA-224/256/384/512 description document
+ * (see http://csrc.nist.gov/cryptval/shs/sha256-384-512.pdf) uses this
+ * same "backwards" definition.
+ */
+/* Shift-right (used in SHA-224, SHA-256, SHA-384, and SHA-512): */
+#define R(b,x) ((x) >> (b))
+/* 32-bit Rotate-right (used in SHA-224 and SHA-256): */
+#define S32(b,x) (((x) >> (b)) | ((x) << (32 - (b))))
+/* 64-bit Rotate-right (used in SHA-384 and SHA-512): */
+#define S64(b,x) (((x) >> (b)) | ((x) << (64 - (b))))
+
+/* Two of six logical functions used in SHA-224, SHA-256, SHA-384, and SHA-512: */
+#define Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z)))
+#define Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
+
+/* Four of six logical functions used in SHA-224 and SHA-256: */
+#define Sigma0_256(x) (S32(2, (x)) ^ S32(13, (x)) ^ S32(22, (x)))
+#define Sigma1_256(x) (S32(6, (x)) ^ S32(11, (x)) ^ S32(25, (x)))
+#define sigma0_256(x) (S32(7, (x)) ^ S32(18, (x)) ^ R(3 , (x)))
+#define sigma1_256(x) (S32(17, (x)) ^ S32(19, (x)) ^ R(10, (x)))
+
+/* Four of six logical functions used in SHA-384 and SHA-512: */
+#define Sigma0_512(x) (S64(28, (x)) ^ S64(34, (x)) ^ S64(39, (x)))
+#define Sigma1_512(x) (S64(14, (x)) ^ S64(18, (x)) ^ S64(41, (x)))
+#define sigma0_512(x) (S64( 1, (x)) ^ S64( 8, (x)) ^ R( 7, (x)))
+#define sigma1_512(x) (S64(19, (x)) ^ S64(61, (x)) ^ R( 6, (x)))
+
+
+/*** SHA-XYZ INITIAL HASH VALUES AND CONSTANTS ************************/
+/* Hash constant words K for SHA-224 and SHA-256: */
+static const uint32_t K256[64] = {
+ 0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL,
+ 0x3956c25bUL, 0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL,
+ 0xd807aa98UL, 0x12835b01UL, 0x243185beUL, 0x550c7dc3UL,
+ 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL, 0xc19bf174UL,
+ 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
+ 0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL,
+ 0x983e5152UL, 0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL,
+ 0xc6e00bf3UL, 0xd5a79147UL, 0x06ca6351UL, 0x14292967UL,
+ 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL, 0x53380d13UL,
+ 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
+ 0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL,
+ 0xd192e819UL, 0xd6990624UL, 0xf40e3585UL, 0x106aa070UL,
+ 0x19a4c116UL, 0x1e376c08UL, 0x2748774cUL, 0x34b0bcb5UL,
+ 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL, 0x682e6ff3UL,
+ 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
+ 0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
+};
+
+/* Initial hash value H for SHA-256: */
+static const uint32_t sha256_initial_hash_value[8] = {
+ 0x6a09e667UL,
+ 0xbb67ae85UL,
+ 0x3c6ef372UL,
+ 0xa54ff53aUL,
+ 0x510e527fUL,
+ 0x9b05688cUL,
+ 0x1f83d9abUL,
+ 0x5be0cd19UL
+};
+
+/* Hash constant words K for SHA-384 and SHA-512: */
+static const uint64_t K512[80] = {
+ 0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL,
+ 0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
+ 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
+ 0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
+ 0xd807aa98a3030242ULL, 0x12835b0145706fbeULL,
+ 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
+ 0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL,
+ 0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
+ 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
+ 0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
+ 0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL,
+ 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
+ 0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL,
+ 0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
+ 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
+ 0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
+ 0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL,
+ 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
+ 0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL,
+ 0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
+ 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
+ 0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
+ 0xd192e819d6ef5218ULL, 0xd69906245565a910ULL,
+ 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
+ 0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL,
+ 0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
+ 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
+ 0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
+ 0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL,
+ 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
+ 0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL,
+ 0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
+ 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
+ 0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
+ 0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL,
+ 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
+ 0x28db77f523047d84ULL, 0x32caab7b40c72493ULL,
+ 0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
+ 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
+ 0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL
+};
+
+/* Initial hash value H for SHA-512 */
+static const uint64_t sha512_initial_hash_value[8] = {
+ 0x6a09e667f3bcc908ULL,
+ 0xbb67ae8584caa73bULL,
+ 0x3c6ef372fe94f82bULL,
+ 0xa54ff53a5f1d36f1ULL,
+ 0x510e527fade682d1ULL,
+ 0x9b05688c2b3e6c1fULL,
+ 0x1f83d9abfb41bd6bULL,
+ 0x5be0cd19137e2179ULL
+};
+
+/* Initial hash value H for SHA-384 */
+static const uint64_t sha384_initial_hash_value[8] = {
+ 0xcbbb9d5dc1059ed8ULL,
+ 0x629a292a367cd507ULL,
+ 0x9159015a3070dd17ULL,
+ 0x152fecd8f70e5939ULL,
+ 0x67332667ffc00b31ULL,
+ 0x8eb44a8768581511ULL,
+ 0xdb0c2e0d64f98fa7ULL,
+ 0x47b5481dbefa4fa4ULL
+};
+
+/*** SHA-256: *********************************************************/
+void
+SHA256Init(SHA2_CTX *context)
+{
+ memcpy(context->state.st32, sha256_initial_hash_value,
+ sizeof(sha256_initial_hash_value));
+ memset(context->buffer, 0, sizeof(context->buffer));
+ context->bitcount[0] = 0;
+}
+
+#ifdef SHA2_UNROLL_TRANSFORM
+
+/* Unrolled SHA-256 round macros: */
+
+#define ROUND256_0_TO_15(a,b,c,d,e,f,g,h) do { \
+ BE_8_TO_32(W256[j], data); \
+ data += 4; \
+ T1 = (h) + Sigma1_256((e)) + Ch((e), (f), (g)) + K256[j] + W256[j]; \
+ (d) += T1; \
+ (h) = T1 + Sigma0_256((a)) + Maj((a), (b), (c)); \
+ j++; \
+} while(0)
+
+#define ROUND256(a,b,c,d,e,f,g,h) do { \
+ s0 = W256[(j+1)&0x0f]; \
+ s0 = sigma0_256(s0); \
+ s1 = W256[(j+14)&0x0f]; \
+ s1 = sigma1_256(s1); \
+ T1 = (h) + Sigma1_256((e)) + Ch((e), (f), (g)) + K256[j] + \
+ (W256[j&0x0f] += s1 + W256[(j+9)&0x0f] + s0); \
+ (d) += T1; \
+ (h) = T1 + Sigma0_256((a)) + Maj((a), (b), (c)); \
+ j++; \
+} while(0)
+
+void
+SHA256Transform(uint32_t state[8], const uint8_t data[SHA256_BLOCK_LENGTH])
+{
+ uint32_t a, b, c, d, e, f, g, h, s0, s1;
+ uint32_t T1, W256[16];
+ int j;
+
+ /* Initialize registers with the prev. intermediate value */
+ a = state[0];
+ b = state[1];
+ c = state[2];
+ d = state[3];
+ e = state[4];
+ f = state[5];
+ g = state[6];
+ h = state[7];
+
+ j = 0;
+ do {
+ /* Rounds 0 to 15 (unrolled): */
+ ROUND256_0_TO_15(a,b,c,d,e,f,g,h);
+ ROUND256_0_TO_15(h,a,b,c,d,e,f,g);
+ ROUND256_0_TO_15(g,h,a,b,c,d,e,f);
+ ROUND256_0_TO_15(f,g,h,a,b,c,d,e);
+ ROUND256_0_TO_15(e,f,g,h,a,b,c,d);
+ ROUND256_0_TO_15(d,e,f,g,h,a,b,c);
+ ROUND256_0_TO_15(c,d,e,f,g,h,a,b);
+ ROUND256_0_TO_15(b,c,d,e,f,g,h,a);
+ } while (j < 16);
+
+ /* Now for the remaining rounds up to 63: */
+ do {
+ ROUND256(a,b,c,d,e,f,g,h);
+ ROUND256(h,a,b,c,d,e,f,g);
+ ROUND256(g,h,a,b,c,d,e,f);
+ ROUND256(f,g,h,a,b,c,d,e);
+ ROUND256(e,f,g,h,a,b,c,d);
+ ROUND256(d,e,f,g,h,a,b,c);
+ ROUND256(c,d,e,f,g,h,a,b);
+ ROUND256(b,c,d,e,f,g,h,a);
+ } while (j < 64);
+
+ /* Compute the current intermediate hash value */
+ state[0] += a;
+ state[1] += b;
+ state[2] += c;
+ state[3] += d;
+ state[4] += e;
+ state[5] += f;
+ state[6] += g;
+ state[7] += h;
+
+ /* Clean up */
+ a = b = c = d = e = f = g = h = T1 = 0;
+}
+
+#else /* SHA2_UNROLL_TRANSFORM */
+
+void
+SHA256Transform(uint32_t state[8], const uint8_t data[SHA256_BLOCK_LENGTH])
+{
+ uint32_t a, b, c, d, e, f, g, h, s0, s1;
+ uint32_t T1, T2, W256[16];
+ int j;
+
+ /* Initialize registers with the prev. intermediate value */
+ a = state[0];
+ b = state[1];
+ c = state[2];
+ d = state[3];
+ e = state[4];
+ f = state[5];
+ g = state[6];
+ h = state[7];
+
+ j = 0;
+ do {
+ BE_8_TO_32(W256[j], data);
+ data += 4;
+ /* Apply the SHA-256 compression function to update a..h */
+ T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] + W256[j];
+ T2 = Sigma0_256(a) + Maj(a, b, c);
+ h = g;
+ g = f;
+ f = e;
+ e = d + T1;
+ d = c;
+ c = b;
+ b = a;
+ a = T1 + T2;
+
+ j++;
+ } while (j < 16);
+
+ do {
+ /* Part of the message block expansion: */
+ s0 = W256[(j+1)&0x0f];
+ s0 = sigma0_256(s0);
+ s1 = W256[(j+14)&0x0f];
+ s1 = sigma1_256(s1);
+
+ /* Apply the SHA-256 compression function to update a..h */
+ T1 = h + Sigma1_256(e) + Ch(e, f, g) + K256[j] +
+ (W256[j&0x0f] += s1 + W256[(j+9)&0x0f] + s0);
+ T2 = Sigma0_256(a) + Maj(a, b, c);
+ h = g;
+ g = f;
+ f = e;
+ e = d + T1;
+ d = c;
+ c = b;
+ b = a;
+ a = T1 + T2;
+
+ j++;
+ } while (j < 64);
+
+ /* Compute the current intermediate hash value */
+ state[0] += a;
+ state[1] += b;
+ state[2] += c;
+ state[3] += d;
+ state[4] += e;
+ state[5] += f;
+ state[6] += g;
+ state[7] += h;
+
+ /* Clean up */
+ a = b = c = d = e = f = g = h = T1 = T2 = 0;
+}
+
+#endif /* SHA2_UNROLL_TRANSFORM */
+
+void
+SHA256Update(SHA2_CTX *context, const uint8_t *data, size_t len)
+{
+ uint64_t freespace, usedspace;
+
+ /* Calling with no data is valid (we do nothing) */
+ if (len == 0)
+ return;
+
+ usedspace = (context->bitcount[0] >> 3) % SHA256_BLOCK_LENGTH;
+ if (usedspace > 0) {
+ /* Calculate how much free space is available in the buffer */
+ freespace = SHA256_BLOCK_LENGTH - usedspace;
+
+ if (len >= freespace) {
+ /* Fill the buffer completely and process it */
+ memcpy(&context->buffer[usedspace], data, freespace);
+ context->bitcount[0] += freespace << 3;
+ len -= freespace;
+ data += freespace;
+ SHA256Transform(context->state.st32, context->buffer);
+ } else {
+ /* The buffer is not yet full */
+ memcpy(&context->buffer[usedspace], data, len);
+ context->bitcount[0] += (uint64_t)len << 3;
+ /* Clean up: */
+ usedspace = freespace = 0;
+ return;
+ }
+ }
+ while (len >= SHA256_BLOCK_LENGTH) {
+ /* Process as many complete blocks as we can */
+ SHA256Transform(context->state.st32, data);
+ context->bitcount[0] += SHA256_BLOCK_LENGTH << 3;
+ len -= SHA256_BLOCK_LENGTH;
+ data += SHA256_BLOCK_LENGTH;
+ }
+ if (len > 0) {
+ /* There's left-overs, so save 'em */
+ memcpy(context->buffer, data, len);
+ context->bitcount[0] += len << 3;
+ }
+ /* Clean up: */
+ usedspace = freespace = 0;
+}
+
+void
+SHA256Pad(SHA2_CTX *context)
+{
+ unsigned int usedspace;
+
+ usedspace = (context->bitcount[0] >> 3) % SHA256_BLOCK_LENGTH;
+ if (usedspace > 0) {
+ /* Begin padding with a 1 bit: */
+ context->buffer[usedspace++] = 0x80;
+
+ if (usedspace <= SHA256_SHORT_BLOCK_LENGTH) {
+ /* Set-up for the last transform: */
+ memset(&context->buffer[usedspace], 0,
+ SHA256_SHORT_BLOCK_LENGTH - usedspace);
+ } else {
+ if (usedspace < SHA256_BLOCK_LENGTH) {
+ memset(&context->buffer[usedspace], 0,
+ SHA256_BLOCK_LENGTH - usedspace);
+ }
+ /* Do second-to-last transform: */
+ SHA256Transform(context->state.st32, context->buffer);
+
+ /* Prepare for last transform: */
+ memset(context->buffer, 0, SHA256_SHORT_BLOCK_LENGTH);
+ }
+ } else {
+ /* Set-up for the last transform: */
+ memset(context->buffer, 0, SHA256_SHORT_BLOCK_LENGTH);
+
+ /* Begin padding with a 1 bit: */
+ *context->buffer = 0x80;
+ }
+ /* Store the length of input data (in bits) in big endian format: */
+ BE_64_TO_8(&context->buffer[SHA256_SHORT_BLOCK_LENGTH],
+ context->bitcount[0]);
+
+ /* Final transform: */
+ SHA256Transform(context->state.st32, context->buffer);
+
+ /* Clean up: */
+ usedspace = 0;
+}
+
+void
+SHA256Final(uint8_t digest[SHA256_DIGEST_LENGTH], SHA2_CTX *context)
+{
+ SHA256Pad(context);
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+ int i;
+
+ /* Convert TO host byte order */
+ for (i = 0; i < 8; i++)
+ BE_32_TO_8(digest + i * 4, context->state.st32[i]);
+#else
+ memcpy(digest, context->state.st32, SHA256_DIGEST_LENGTH);
+#endif
+ explicit_bzero(context, sizeof(*context));
+}
+
+
+/*** SHA-512: *********************************************************/
+void
+SHA512Init(SHA2_CTX *context)
+{
+ memcpy(context->state.st64, sha512_initial_hash_value,
+ sizeof(sha512_initial_hash_value));
+ memset(context->buffer, 0, sizeof(context->buffer));
+ context->bitcount[0] = context->bitcount[1] = 0;
+}
+
+#ifdef SHA2_UNROLL_TRANSFORM
+
+/* Unrolled SHA-512 round macros: */
+
+#define ROUND512_0_TO_15(a,b,c,d,e,f,g,h) do { \
+ BE_8_TO_64(W512[j], data); \
+ data += 8; \
+ T1 = (h) + Sigma1_512((e)) + Ch((e), (f), (g)) + K512[j] + W512[j]; \
+ (d) += T1; \
+ (h) = T1 + Sigma0_512((a)) + Maj((a), (b), (c)); \
+ j++; \
+} while(0)
+
+
+#define ROUND512(a,b,c,d,e,f,g,h) do { \
+ s0 = W512[(j+1)&0x0f]; \
+ s0 = sigma0_512(s0); \
+ s1 = W512[(j+14)&0x0f]; \
+ s1 = sigma1_512(s1); \
+ T1 = (h) + Sigma1_512((e)) + Ch((e), (f), (g)) + K512[j] + \
+ (W512[j&0x0f] += s1 + W512[(j+9)&0x0f] + s0); \
+ (d) += T1; \
+ (h) = T1 + Sigma0_512((a)) + Maj((a), (b), (c)); \
+ j++; \
+} while(0)
+
+void
+SHA512Transform(uint64_t state[8], const uint8_t data[SHA512_BLOCK_LENGTH])
+{
+ uint64_t a, b, c, d, e, f, g, h, s0, s1;
+ uint64_t T1, W512[16];
+ int j;
+
+ /* Initialize registers with the prev. intermediate value */
+ a = state[0];
+ b = state[1];
+ c = state[2];
+ d = state[3];
+ e = state[4];
+ f = state[5];
+ g = state[6];
+ h = state[7];
+
+ j = 0;
+ do {
+ /* Rounds 0 to 15 (unrolled): */
+ ROUND512_0_TO_15(a,b,c,d,e,f,g,h);
+ ROUND512_0_TO_15(h,a,b,c,d,e,f,g);
+ ROUND512_0_TO_15(g,h,a,b,c,d,e,f);
+ ROUND512_0_TO_15(f,g,h,a,b,c,d,e);
+ ROUND512_0_TO_15(e,f,g,h,a,b,c,d);
+ ROUND512_0_TO_15(d,e,f,g,h,a,b,c);
+ ROUND512_0_TO_15(c,d,e,f,g,h,a,b);
+ ROUND512_0_TO_15(b,c,d,e,f,g,h,a);
+ } while (j < 16);
+
+ /* Now for the remaining rounds up to 79: */
+ do {
+ ROUND512(a,b,c,d,e,f,g,h);
+ ROUND512(h,a,b,c,d,e,f,g);
+ ROUND512(g,h,a,b,c,d,e,f);
+ ROUND512(f,g,h,a,b,c,d,e);
+ ROUND512(e,f,g,h,a,b,c,d);
+ ROUND512(d,e,f,g,h,a,b,c);
+ ROUND512(c,d,e,f,g,h,a,b);
+ ROUND512(b,c,d,e,f,g,h,a);
+ } while (j < 80);
+
+ /* Compute the current intermediate hash value */
+ state[0] += a;
+ state[1] += b;
+ state[2] += c;
+ state[3] += d;
+ state[4] += e;
+ state[5] += f;
+ state[6] += g;
+ state[7] += h;
+
+ /* Clean up */
+ a = b = c = d = e = f = g = h = T1 = 0;
+}
+
+#else /* SHA2_UNROLL_TRANSFORM */
+
+void
+SHA512Transform(uint64_t state[8], const uint8_t data[SHA512_BLOCK_LENGTH])
+{
+ uint64_t a, b, c, d, e, f, g, h, s0, s1;
+ uint64_t T1, T2, W512[16];
+ int j;
+
+ /* Initialize registers with the prev. intermediate value */
+ a = state[0];
+ b = state[1];
+ c = state[2];
+ d = state[3];
+ e = state[4];
+ f = state[5];
+ g = state[6];
+ h = state[7];
+
+ j = 0;
+ do {
+ BE_8_TO_64(W512[j], data);
+ data += 8;
+ /* Apply the SHA-512 compression function to update a..h */
+ T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] + W512[j];
+ T2 = Sigma0_512(a) + Maj(a, b, c);
+ h = g;
+ g = f;
+ f = e;
+ e = d + T1;
+ d = c;
+ c = b;
+ b = a;
+ a = T1 + T2;
+
+ j++;
+ } while (j < 16);
+
+ do {
+ /* Part of the message block expansion: */
+ s0 = W512[(j+1)&0x0f];
+ s0 = sigma0_512(s0);
+ s1 = W512[(j+14)&0x0f];
+ s1 = sigma1_512(s1);
+
+ /* Apply the SHA-512 compression function to update a..h */
+ T1 = h + Sigma1_512(e) + Ch(e, f, g) + K512[j] +
+ (W512[j&0x0f] += s1 + W512[(j+9)&0x0f] + s0);
+ T2 = Sigma0_512(a) + Maj(a, b, c);
+ h = g;
+ g = f;
+ f = e;
+ e = d + T1;
+ d = c;
+ c = b;
+ b = a;
+ a = T1 + T2;
+
+ j++;
+ } while (j < 80);
+
+ /* Compute the current intermediate hash value */
+ state[0] += a;
+ state[1] += b;
+ state[2] += c;
+ state[3] += d;
+ state[4] += e;
+ state[5] += f;
+ state[6] += g;
+ state[7] += h;
+
+ /* Clean up */
+ a = b = c = d = e = f = g = h = T1 = T2 = 0;
+}
+
+#endif /* SHA2_UNROLL_TRANSFORM */
+
+void
+SHA512Update(SHA2_CTX *context, const uint8_t *data, size_t len)
+{
+ size_t freespace, usedspace;
+
+ /* Calling with no data is valid (we do nothing) */
+ if (len == 0)
+ return;
+
+ usedspace = (context->bitcount[0] >> 3) % SHA512_BLOCK_LENGTH;
+ if (usedspace > 0) {
+ /* Calculate how much free space is available in the buffer */
+ freespace = SHA512_BLOCK_LENGTH - usedspace;
+
+ if (len >= freespace) {
+ /* Fill the buffer completely and process it */
+ memcpy(&context->buffer[usedspace], data, freespace);
+ ADDINC128(context->bitcount, freespace << 3);
+ len -= freespace;
+ data += freespace;
+ SHA512Transform(context->state.st64, context->buffer);
+ } else {
+ /* The buffer is not yet full */
+ memcpy(&context->buffer[usedspace], data, len);
+ ADDINC128(context->bitcount, len << 3);
+ /* Clean up: */
+ usedspace = freespace = 0;
+ return;
+ }
+ }
+ while (len >= SHA512_BLOCK_LENGTH) {
+ /* Process as many complete blocks as we can */
+ SHA512Transform(context->state.st64, data);
+ ADDINC128(context->bitcount, SHA512_BLOCK_LENGTH << 3);
+ len -= SHA512_BLOCK_LENGTH;
+ data += SHA512_BLOCK_LENGTH;
+ }
+ if (len > 0) {
+ /* There's left-overs, so save 'em */
+ memcpy(context->buffer, data, len);
+ ADDINC128(context->bitcount, len << 3);
+ }
+ /* Clean up: */
+ usedspace = freespace = 0;
+}
+
+void
+SHA512Pad(SHA2_CTX *context)
+{
+ unsigned int usedspace;
+
+ usedspace = (context->bitcount[0] >> 3) % SHA512_BLOCK_LENGTH;
+ if (usedspace > 0) {
+ /* Begin padding with a 1 bit: */
+ context->buffer[usedspace++] = 0x80;
+
+ if (usedspace <= SHA512_SHORT_BLOCK_LENGTH) {
+ /* Set-up for the last transform: */
+ memset(&context->buffer[usedspace], 0, SHA512_SHORT_BLOCK_LENGTH - usedspace);
+ } else {
+ if (usedspace < SHA512_BLOCK_LENGTH) {
+ memset(&context->buffer[usedspace], 0, SHA512_BLOCK_LENGTH - usedspace);
+ }
+ /* Do second-to-last transform: */
+ SHA512Transform(context->state.st64, context->buffer);
+
+ /* And set-up for the last transform: */
+ memset(context->buffer, 0, SHA512_BLOCK_LENGTH - 2);
+ }
+ } else {
+ /* Prepare for final transform: */
+ memset(context->buffer, 0, SHA512_SHORT_BLOCK_LENGTH);
+
+ /* Begin padding with a 1 bit: */
+ *context->buffer = 0x80;
+ }
+ /* Store the length of input data (in bits) in big endian format: */
+ BE_64_TO_8(&context->buffer[SHA512_SHORT_BLOCK_LENGTH],
+ context->bitcount[1]);
+ BE_64_TO_8(&context->buffer[SHA512_SHORT_BLOCK_LENGTH + 8],
+ context->bitcount[0]);
+
+ /* Final transform: */
+ SHA512Transform(context->state.st64, context->buffer);
+
+ /* Clean up: */
+ usedspace = 0;
+}
+
+void
+SHA512Final(uint8_t digest[SHA512_DIGEST_LENGTH], SHA2_CTX *context)
+{
+ SHA512Pad(context);
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+ int i;
+
+ /* Convert TO host byte order */
+ for (i = 0; i < 8; i++)
+ BE_64_TO_8(digest + i * 8, context->state.st64[i]);
+#else
+ memcpy(digest, context->state.st64, SHA512_DIGEST_LENGTH);
+#endif
+ explicit_bzero(context, sizeof(*context));
+}
+
+/*** SHA-384: *********************************************************/
+void
+SHA384Init(SHA2_CTX *context)
+{
+ memcpy(context->state.st64, sha384_initial_hash_value,
+ sizeof(sha384_initial_hash_value));
+ memset(context->buffer, 0, sizeof(context->buffer));
+ context->bitcount[0] = context->bitcount[1] = 0;
+}
+
+MAKE_CLONE(SHA384Transform, SHA512Transform);
+MAKE_CLONE(SHA384Update, SHA512Update);
+MAKE_CLONE(SHA384Pad, SHA512Pad);
+
+/* Equivalent of MAKE_CLONE (which is a no-op) for SHA384 funcs */
+void
+SHA384Transform(uint64_t state[8], const uint8_t data[SHA512_BLOCK_LENGTH])
+{
+ SHA512Transform(state, data);
+}
+
+void
+SHA384Update(SHA2_CTX *context, const uint8_t *data, size_t len)
+{
+ SHA512Update(context, data, len);
+}
+
+void
+SHA384Pad(SHA2_CTX *context)
+{
+ SHA512Pad(context);
+}
+
+void
+SHA384Final(uint8_t digest[SHA384_DIGEST_LENGTH], SHA2_CTX *context)
+{
+ SHA384Pad(context);
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+ int i;
+
+ /* Convert TO host byte order */
+ for (i = 0; i < 6; i++)
+ BE_64_TO_8(digest + i * 8, context->state.st64[i]);
+#else
+ memcpy(digest, context->state.st64, SHA384_DIGEST_LENGTH);
+#endif
+ /* Zero out state data */
+ explicit_bzero(context, sizeof(*context));
+}
+
+char *
+SHA256End(SHA2_CTX *ctx, char *buf)
+{
+ int i;
+ uint8_t digest[SHA256_DIGEST_LENGTH];
+ static const char hex[] = "0123456789abcdef";
+
+ if (buf == NULL && (buf = malloc(SHA256_DIGEST_STRING_LENGTH)) == NULL)
+ return (NULL);
+
+ SHA256Final(digest, ctx);
+ for (i = 0; i < SHA256_DIGEST_LENGTH; i++) {
+ buf[i + i] = hex[digest[i] >> 4];
+ buf[i + i + 1] = hex[digest[i] & 0x0f];
+ }
+ buf[i + i] = '\0';
+ explicit_bzero(digest, sizeof(digest));
+ return (buf);
+}
+
+char *
+SHA384End(SHA2_CTX *ctx, char *buf)
+{
+ int i;
+ uint8_t digest[SHA384_DIGEST_LENGTH];
+ static const char hex[] = "0123456789abcdef";
+
+ if (buf == NULL && (buf = malloc(SHA384_DIGEST_STRING_LENGTH)) == NULL)
+ return (NULL);
+
+ SHA384Final(digest, ctx);
+ for (i = 0; i < SHA384_DIGEST_LENGTH; i++) {
+ buf[i + i] = hex[digest[i] >> 4];
+ buf[i + i + 1] = hex[digest[i] & 0x0f];
+ }
+ buf[i + i] = '\0';
+ explicit_bzero(digest, sizeof(digest));
+ return (buf);
+}
+
+char *
+SHA512End(SHA2_CTX *ctx, char *buf)
+{
+ int i;
+ uint8_t digest[SHA512_DIGEST_LENGTH];
+ static const char hex[] = "0123456789abcdef";
+
+ if (buf == NULL && (buf = malloc(SHA512_DIGEST_STRING_LENGTH)) == NULL)
+ return (NULL);
+
+ SHA512Final(digest, ctx);
+ for (i = 0; i < SHA512_DIGEST_LENGTH; i++) {
+ buf[i + i] = hex[digest[i] >> 4];
+ buf[i + i + 1] = hex[digest[i] & 0x0f];
+ }
+ buf[i + i] = '\0';
+ explicit_bzero(digest, sizeof(digest));
+ return (buf);
+}
+
+char *
+SHA256FileChunk(const char *filename, char *buf, off_t off, off_t len)
+{
+ struct stat sb;
+ u_char buffer[BUFSIZ];
+ SHA2_CTX ctx;
+ int fd, save_errno;
+ ssize_t nr;
+
+ SHA256Init(&ctx);
+
+ if ((fd = open(filename, O_RDONLY)) == -1)
+ return (NULL);
+ if (len == 0) {
+ if (fstat(fd, &sb) == -1) {
+ save_errno = errno;
+ close(fd);
+ errno = save_errno;
+ return (NULL);
+ }
+ len = sb.st_size;
+ }
+ if (off > 0 && lseek(fd, off, SEEK_SET) == -1) {
+ save_errno = errno;
+ close(fd);
+ errno = save_errno;
+ return (NULL);
+ }
+
+ while ((nr = read(fd, buffer, MINIMUM(sizeof(buffer), (size_t)len))) > 0) {
+ SHA256Update(&ctx, buffer, nr);
+ if (len > 0 && (len -= nr) == 0)
+ break;
+ }
+
+ save_errno = errno;
+ close(fd);
+ errno = save_errno;
+ return (nr == -1 ? NULL : SHA256End(&ctx, buf));
+}
+
+char *
+SHA256File(const char *filename, char *buf)
+{
+ return (SHA256FileChunk(filename, buf, 0, 0));
+}
+
+char *
+SHA384FileChunk(const char *filename, char *buf, off_t off, off_t len)
+{
+ struct stat sb;
+ u_char buffer[BUFSIZ];
+ SHA2_CTX ctx;
+ int fd, save_errno;
+ ssize_t nr;
+
+ SHA384Init(&ctx);
+
+ if ((fd = open(filename, O_RDONLY)) == -1)
+ return (NULL);
+ if (len == 0) {
+ if (fstat(fd, &sb) == -1) {
+ save_errno = errno;
+ close(fd);
+ errno = save_errno;
+ return (NULL);
+ }
+ len = sb.st_size;
+ }
+ if (off > 0 && lseek(fd, off, SEEK_SET) == -1) {
+ save_errno = errno;
+ close(fd);
+ errno = save_errno;
+ return (NULL);
+ }
+
+ while ((nr = read(fd, buffer, MINIMUM(sizeof(buffer), (size_t)len))) > 0) {
+ SHA384Update(&ctx, buffer, nr);
+ if (len > 0 && (len -= nr) == 0)
+ break;
+ }
+
+ save_errno = errno;
+ close(fd);
+ errno = save_errno;
+ return (nr == -1 ? NULL : SHA384End(&ctx, buf));
+}
+
+char *
+SHA384File(const char *filename, char *buf)
+{
+ return (SHA384FileChunk(filename, buf, 0, 0));
+}
+
+char *
+SHA512FileChunk(const char *filename, char *buf, off_t off, off_t len)
+{
+ struct stat sb;
+ u_char buffer[BUFSIZ];
+ SHA2_CTX ctx;
+ int fd, save_errno;
+ ssize_t nr;
+
+ SHA512Init(&ctx);
+
+ if ((fd = open(filename, O_RDONLY)) == -1)
+ return (NULL);
+ if (len == 0) {
+ if (fstat(fd, &sb) == -1) {
+ save_errno = errno;
+ close(fd);
+ errno = save_errno;
+ return (NULL);
+ }
+ len = sb.st_size;
+ }
+ if (off > 0 && lseek(fd, off, SEEK_SET) == -1) {
+ save_errno = errno;
+ close(fd);
+ errno = save_errno;
+ return (NULL);
+ }
+
+ while ((nr = read(fd, buffer, MINIMUM(sizeof(buffer), (size_t)len))) > 0) {
+ SHA512Update(&ctx, buffer, nr);
+ if (len > 0 && (len -= nr) == 0)
+ break;
+ }
+
+ save_errno = errno;
+ close(fd);
+ errno = save_errno;
+ return (nr == -1 ? NULL : SHA512End(&ctx, buf));
+}
+
+char *
+SHA512File(const char *filename, char *buf)
+{
+ return (SHA512FileChunk(filename, buf, 0, 0));
+}
+
+char *
+SHA256Data(const u_char *data, size_t len, char *buf)
+{
+ SHA2_CTX ctx;
+
+ SHA256Init(&ctx);
+ SHA256Update(&ctx, data, len);
+ return (SHA256End(&ctx, buf));
+}
+
+char *
+SHA384Data(const u_char *data, size_t len, char *buf)
+{
+ SHA2_CTX ctx;
+
+ SHA384Init(&ctx);
+ SHA384Update(&ctx, data, len);
+ return (SHA384End(&ctx, buf));
+}
+
+char *
+SHA512Data(const u_char *data, size_t len, char *buf)
+{
+ SHA2_CTX ctx;
+
+ SHA512Init(&ctx);
+ SHA512Update(&ctx, data, len);
+ return (SHA512End(&ctx, buf));
+}
+#endif /* !HAVE_SHA2_H */
+#if !HAVE_STRLCAT
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <string.h>
+
+/*
+ * Appends src to string dst of size siz (unlike strncat, siz is the
+ * full size of dst, not space left). At most siz-1 characters
+ * will be copied. Always NUL terminates (unless siz <= strlen(dst)).
+ * Returns strlen(src) + MIN(siz, strlen(initial dst)).
+ * If retval >= siz, truncation occurred.
+ */
+size_t
+strlcat(char *dst, const char *src, size_t siz)
+{
+ char *d = dst;
+ const char *s = src;
+ size_t n = siz;
+ size_t dlen;
+
+ /* Find the end of dst and adjust bytes left but don't go past end */
+ while (n-- != 0 && *d != '\0')
+ d++;
+ dlen = d - dst;
+ n = siz - dlen;
+
+ if (n == 0)
+ return(dlen + strlen(s));
+ while (*s != '\0') {
+ if (n != 1) {
+ *d++ = *s;
+ n--;
+ }
+ s++;
+ }
+ *d = '\0';
+
+ return(dlen + (s - src)); /* count does not include NUL */
+}
+#endif /* !HAVE_STRLCAT */
+#if !HAVE_STRLCPY
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <string.h>
+
+/*
+ * Copy src to string dst of size siz. At most siz-1 characters
+ * will be copied. Always NUL terminates (unless siz == 0).
+ * Returns strlen(src); if retval >= siz, truncation occurred.
+ */
+size_t
+strlcpy(char *dst, const char *src, size_t siz)
+{
+ char *d = dst;
+ const char *s = src;
+ size_t n = siz;
+
+ /* Copy as many bytes as will fit */
+ if (n != 0) {
+ while (--n != 0) {
+ if ((*d++ = *s++) == '\0')
+ break;
+ }
+ }
+
+ /* Not enough room in dst, add NUL and traverse rest of src */
+ if (n == 0) {
+ if (siz != 0)
+ *d = '\0'; /* NUL-terminate dst */
+ while (*s++)
+ ;
+ }
+
+ return(s - src - 1); /* count does not include NUL */
+}
+#endif /* !HAVE_STRLCPY */
+#if !HAVE_STRNDUP
+/* $OpenBSD$ */
+/*
+ * Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+char *
+strndup(const char *str, size_t maxlen)
+{
+ char *copy;
+ size_t len;
+
+ len = strnlen(str, maxlen);
+ copy = malloc(len + 1);
+ if (copy != NULL) {
+ (void)memcpy(copy, str, len);
+ copy[len] = '\0';
+ }
+
+ return copy;
+}
+#endif /* !HAVE_STRNDUP */
+#if !HAVE_STRNLEN
+/* $OpenBSD$ */
+
+/*
+ * Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <string.h>
+
+size_t
+strnlen(const char *str, size_t maxlen)
+{
+ const char *cp;
+
+ for (cp = str; maxlen != 0 && *cp != '\0'; cp++, maxlen--)
+ ;
+
+ return (size_t)(cp - str);
+}
+#endif /* !HAVE_STRNLEN */
+#if !HAVE_STRTONUM
+/*
+ * Copyright (c) 2004 Ted Unangst and Todd Miller
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <errno.h>
+#include <limits.h>
+#include <stdlib.h>
+
+#define INVALID 1
+#define TOOSMALL 2
+#define TOOLARGE 3
+
+long long
+strtonum(const char *numstr, long long minval, long long maxval,
+ const char **errstrp)
+{
+ long long ll = 0;
+ int error = 0;
+ char *ep;
+ struct errval {
+ const char *errstr;
+ int err;
+ } ev[4] = {
+ { NULL, 0 },
+ { "invalid", EINVAL },
+ { "too small", ERANGE },
+ { "too large", ERANGE },
+ };
+
+ ev[0].err = errno;
+ errno = 0;
+ if (minval > maxval) {
+ error = INVALID;
+ } else {
+ ll = strtoll(numstr, &ep, 10);
+ if (numstr == ep || *ep != '\0')
+ error = INVALID;
+ else if ((ll == LLONG_MIN && errno == ERANGE) || ll < minval)
+ error = TOOSMALL;
+ else if ((ll == LLONG_MAX && errno == ERANGE) || ll > maxval)
+ error = TOOLARGE;
+ }
+ if (errstrp != NULL)
+ *errstrp = ev[error].errstr;
+ errno = ev[error].err;
+ if (error)
+ ll = 0;
+
+ return (ll);
+}
+#endif /* !HAVE_STRTONUM */
diff --git a/configure b/configure
@@ -0,0 +1,2455 @@
+#! /bin/sh
+#
+# Copyright (c) 2014, 2015, 2016 Ingo Schwarze <schwarze@openbsd.org>
+# Copyright (c) 2017, 2018 Kristaps Dzonsons <kristaps@bsd.lv>
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+OCONFIGURE_VERSION="0.2.5"
+
+#
+# This script outputs two files: config.h and Makefile.configure.
+# It tries to read from configure.local, which contains predefined
+# values we won't autoconfigure.
+#
+# If you want to use configure with your project, have your GNUmakefile
+# or BSDmakefile---whichever---try to import/include Makefile.configure
+# at the beginning of the file.
+#
+# Like so (note no quotes, no period, etc.):
+#
+# include Makefile.configure
+#
+# If it exists, configure was run; otherwise, it wasn't.
+#
+# You'll probably want to change parts of this file. I've noted the
+# parts that you'll probably change in the section documentation.
+#
+# See https://github.com/kristapsdz/oconfigure for more.
+
+set -e
+
+#----------------------------------------------------------------------
+# Prepare for running: move aside previous configure runs.
+# Output file descriptor usage:
+# 1 (stdout): config.h or Makefile.configure
+# 2 (stderr): original stderr, usually to the console
+# 3: config.log
+# You DO NOT want to change this.
+#----------------------------------------------------------------------
+
+[ -w config.log ] && mv config.log config.log.old
+[ -w config.h ] && mv config.h config.h.old
+
+exec 3> config.log
+echo "config.log: writing..."
+
+#----------------------------------------------------------------------
+# Initialize all variables here such that nothing can leak in from the
+# environment except for CC and CFLAGS, which we might have passed in.
+#----------------------------------------------------------------------
+
+CC=`printf "all:\\n\\t@echo \\\$(CC)\\n" | make -sf -`
+CFLAGS=`printf "all:\\n\\t@echo \\\$(CFLAGS)\\n" | make -sf -`
+CFLAGS="${CFLAGS} -g -W -Wall -Wextra -Wmissing-prototypes -Wstrict-prototypes"
+CFLAGS="${CFLAGS} -Wwrite-strings -Wno-unused-parameter"
+LDADD=
+LDADD_B64_NTOP=
+LDADD_CRYPT=
+LDADD_MD5=
+LDADD_LIB_SOCKET=
+LDADD_STATIC=
+CPPFLAGS=
+LDFLAGS=
+DESTDIR=
+PREFIX="/usr/local"
+BINDIR=
+SBINDIR=
+INCLUDEDIR=
+LIBDIR=
+MANDIR=
+SHAREDIR=
+INSTALL="install"
+INSTALL_PROGRAM=
+INSTALL_LIB=
+INSTALL_MAN=
+INSTALL_DATA=
+
+# SunOS sets "cc", but this doesn't exist.
+# It does have gcc, so try that instead.
+# Prefer clang, though.
+
+which ${CC} 2>/dev/null 1>&2 || {
+ echo "${CC} not found: trying clang" 1>&2
+ echo "${CC} not found: trying clang" 1>&3
+ CC=clang
+ which ${CC} 2>/dev/null 1>&2 || {
+ echo "${CC} not found: trying gcc" 1>&2
+ echo "${CC} not found: trying gcc" 1>&3
+ CC=gcc
+ which ${CC} 2>/dev/null 1>&2 || {
+ echo "gcc not found: giving up" 1>&2
+ echo "gcc not found: giving up" 1>&3
+ exit 1
+ }
+ }
+}
+
+#----------------------------------------------------------------------
+# Allow certain variables to be overriden on the command line.
+#----------------------------------------------------------------------
+
+for keyvals in "$@"
+do
+ key=`echo $keyvals | cut -s -d '=' -f 1`
+ if [ -z "$key" ]
+ then
+ echo "$0: invalid key-value: $keyvals" 1>&2
+ exit 1
+ fi
+ val=`echo $keyvals | cut -d '=' -f 2-`
+ case "$key" in
+ LDADD)
+ LDADD="$val" ;;
+ LDFLAGS)
+ LDFLAGS="$val" ;;
+ CPPFLAGS)
+ CPPFLAGS="$val" ;;
+ DESTDIR)
+ DESTDIR="$val" ;;
+ PREFIX)
+ PREFIX="$val" ;;
+ MANDIR)
+ MANDIR="$val" ;;
+ LIBDIR)
+ LIBDIR="$val" ;;
+ BINDIR)
+ BINDIR="$val" ;;
+ SHAREDIR)
+ SHAREDIR="$val" ;;
+ SBINDIR)
+ SBINDIR="$val" ;;
+ INCLUDEDIR)
+ INCLUDEDIR="$val" ;;
+ *)
+ echo "$0: invalid key: $key" 1>&2
+ exit 1
+ esac
+done
+
+
+#----------------------------------------------------------------------
+# These are the values that will be pushed into config.h after we test
+# for whether they're supported or not.
+# Each of these must have a runtest(), below.
+# Please sort by alpha, for clarity.
+# You WANT to change this.
+#----------------------------------------------------------------------
+
+HAVE_ARC4RANDOM=
+HAVE_B64_NTOP=
+HAVE_CAPSICUM=
+HAVE_CRYPT=
+HAVE_ENDIAN_H=
+HAVE_ERR=
+HAVE_EXPLICIT_BZERO=
+HAVE_FTS=
+HAVE_GETEXECNAME=
+HAVE_GETPROGNAME=
+HAVE_INFTIM=
+HAVE_MD5=
+HAVE_MEMMEM=
+HAVE_MEMRCHR=
+HAVE_MEMSET_S=
+HAVE_MKFIFOAT=
+HAVE_MKNODAT=
+HAVE_OSBYTEORDER_H=
+HAVE_PATH_MAX=
+HAVE_PLEDGE=
+HAVE_PROGRAM_INVOCATION_SHORT_NAME=
+HAVE_READPASSPHRASE=
+HAVE_REALLOCARRAY=
+HAVE_RECALLOCARRAY=
+HAVE_SANDBOX_INIT=
+HAVE_SECCOMP_FILTER=
+HAVE_SETRESGID=
+HAVE_SETRESUID=
+HAVE_SOCK_NONBLOCK=
+HAVE_SHA2_H=
+HAVE_STRLCAT=
+HAVE_STRLCPY=
+HAVE_STRNDUP=
+HAVE_STRNLEN=
+HAVE_STRTONUM=
+HAVE_SYS_BYTEORDER_H=
+HAVE_SYS_ENDIAN_H=
+HAVE_SYS_MKDEV_H=
+HAVE_SYS_QUEUE=
+HAVE_SYS_SYSMACROS=
+HAVE_SYS_TREE=
+HAVE_SYSTRACE=0
+HAVE_UNVEIL=
+HAVE_WAIT_ANY=
+HAVE___PROGNAME=
+
+#----------------------------------------------------------------------
+# Allow configure.local to override all variables, default settings,
+# command-line arguments, and tested features, above.
+# You PROBABLY DO NOT want to change this.
+#----------------------------------------------------------------------
+
+if [ -r ./configure.local ]; then
+ echo "configure.local: reading..." 1>&2
+ echo "configure.local: reading..." 1>&3
+ cat ./configure.local 1>&3
+ . ./configure.local
+else
+ echo "configure.local: no (fully automatic configuration)" 1>&2
+ echo "configure.local: no (fully automatic configuration)" 1>&3
+fi
+
+echo 1>&3
+
+#----------------------------------------------------------------------
+# Infrastructure for running tests.
+# These consists of a series of functions that will attempt to run the
+# given test file and record its exit into a HAVE_xxx variable.
+# You DO NOT want to change this.
+#----------------------------------------------------------------------
+
+COMP="${CC} ${CFLAGS} ${CPPFLAGS} -Wno-unused -Werror"
+
+# Check whether this HAVE_ setting is manually overridden.
+# If yes, use the override, if no, do not decide anything yet.
+# Arguments: lower-case test name, manual value
+
+ismanual() {
+ [ -z "${3}" ] && return 1
+ echo "${1}: manual (HAVE_${2}=${3})" 1>&2
+ echo "${1}: manual (HAVE_${2}=${3})" 1>&3
+ echo 1>&3
+ return 0
+}
+
+# Run a single autoconfiguration test.
+# In case of success, enable the feature.
+# In case of failure, do not decide anything yet.
+# Arguments: lower-case test name, upper-case test name, additional
+# CFLAGS, additional LIBS.
+
+singletest() {
+ extralib=""
+ cat 1>&3 << __HEREDOC__
+${1}: testing...
+${COMP} -DTEST_${2} ${3} -o test-${1} tests.c ${4}
+__HEREDOC__
+ if ${COMP} -DTEST_${2} ${3} -o "test-${1}" tests.c ${4} 1>&3 2>&3; then
+ echo "${1}: ${CC} succeeded" 1>&3
+ else
+ if [ -n "${5}" ] ; then
+ echo "${1}: ${CC} failed with $? (retrying)" 1>&3
+ cat 1>&3 << __HEREDOC__
+${1}: testing...
+${COMP} -DTEST_${2} ${3} -o test-${1} tests.c ${5}
+__HEREDOC__
+ if ${COMP} -DTEST_${2} ${3} -o "test-${1}" tests.c ${5} 1>&3 2>&3; then
+ echo "${1}: ${CC} succeeded" 1>&3
+ extralib="(with ${5})"
+ else
+ echo "${1}: ${CC} failed with $?" 1>&3
+ echo 1>&3
+ return 1
+ fi
+ else
+ echo "${1}: ${CC} failed with $?" 1>&3
+ echo 1>&3
+ return 1
+ fi
+ fi
+
+ if [ -n "${extralib}" ]
+ then
+ eval "LDADD_${2}=\"${5}\""
+ elif [ -n "${4}" ]
+ then
+ eval "LDADD_${2}=\"${4}\""
+ fi
+
+ echo "${1}: yes ${extralib}" 1>&2
+ echo "${1}: yes ${extralib}" 1>&3
+ echo 1>&3
+ eval HAVE_${2}=1
+ rm "test-${1}"
+ return 0
+}
+
+# Run a complete autoconfiguration test, including the check for
+# a manual override and disabling the feature on failure.
+# Arguments: lower case name, upper case name, additional CFLAGS,
+# additional LDADD, alternative LDADD.
+
+runtest() {
+ eval _manual=\${HAVE_${2}}
+ ismanual "${1}" "${2}" "${_manual}" && return 0
+ singletest "${1}" "${2}" "${3}" "${4}" "${5}" && return 0
+ echo "${1}: no" 1>&2
+ eval HAVE_${2}=0
+ return 1
+}
+
+#----------------------------------------------------------------------
+# Begin running the tests themselves.
+# All of your tests must be defined here.
+# Please sort as the HAVE_xxxx values were defined.
+# You WANT to change this.
+# It consists of the following columns:
+# runtest
+# (1) test file
+# (2) macro to set
+# (3) argument to cc *before* -o
+# (4) argument to cc *after*
+# (5) alternative argument to cc *after*
+#----------------------------------------------------------------------
+
+runtest arc4random ARC4RANDOM || true
+runtest b64_ntop B64_NTOP "" "" "-lresolv" || true
+runtest capsicum CAPSICUM || true
+runtest crypt CRYPT "" "" "-lcrypt" || true
+runtest endian_h ENDIAN_H || true
+runtest err ERR || true
+runtest explicit_bzero EXPLICIT_BZERO || true
+runtest fts FTS || true
+runtest getexecname GETEXECNAME || true
+runtest getprogname GETPROGNAME || true
+runtest INFTIM INFTIM || true
+runtest lib_socket LIB_SOCKET "" "" "-lsocket -lnsl" || true
+runtest md5 MD5 "" "" "-lmd" || true
+runtest memmem MEMMEM || true
+runtest memrchr MEMRCHR || true
+runtest memset_s MEMSET_S || true
+runtest mkfifoat MKFIFOAT || true
+runtest mknodat MKNODAT || true
+runtest osbyteorder_h OSBYTEORDER_H || true
+runtest PATH_MAX PATH_MAX || true
+runtest pledge PLEDGE || true
+runtest program_invocation_short_name PROGRAM_INVOCATION_SHORT_NAME || true
+runtest readpassphrase READPASSPHRASE || true
+runtest reallocarray REALLOCARRAY || true
+runtest recallocarray RECALLOCARRAY || true
+runtest sandbox_init SANDBOX_INIT "-Wno-deprecated" || true
+runtest seccomp-filter SECCOMP_FILTER || true
+runtest setresgid SETRESGID || true
+runtest setresuid SETRESUID || true
+runtest sha2_h SHA2_H || true
+runtest SOCK_NONBLOCK SOCK_NONBLOCK || true
+runtest static STATIC "" "-static" || true
+runtest strlcat STRLCAT || true
+runtest strlcpy STRLCPY || true
+runtest strndup STRNDUP || true
+runtest strnlen STRNLEN || true
+runtest strtonum STRTONUM || true
+runtest sys_byteorder_h SYS_BYTEORDER_H || true
+runtest sys_endian_h SYS_ENDIAN_H || true
+runtest sys_mkdev_h SYS_MKDEV_H || true
+runtest sys_sysmacros_h SYS_SYSMACROS_H || true
+runtest sys_queue SYS_QUEUE || true
+runtest sys_tree SYS_TREE || true
+runtest unveil UNVEIL || true
+runtest WAIT_ANY WAIT_ANY || true
+runtest __progname __PROGNAME || true
+
+#----------------------------------------------------------------------
+# Output writing: generate the config.h file.
+# This file contains all of the HAVE_xxxx variables necessary for
+# compiling your source.
+# You must include "config.h" BEFORE any other variables.
+# You WANT to change this.
+#----------------------------------------------------------------------
+
+exec > config.h
+
+# Start with prologue.
+
+cat << __HEREDOC__
+#ifndef OCONFIGURE_CONFIG_H
+#define OCONFIGURE_CONFIG_H
+
+#ifdef __cplusplus
+# error "Do not use C++: this is a C application."
+#endif
+#if !defined(__GNUC__) || (__GNUC__ < 4)
+# define __attribute__(x)
+#endif
+#if defined(__linux__) || defined(__MINT__)
+# define _GNU_SOURCE /* memmem, memrchr, setresuid... */
+# define _DEFAULT_SOURCE /* le32toh, crypt, ... */
+#endif
+#if defined(__NetBSD__)
+# define _OPENBSD_SOURCE /* reallocarray, etc. */
+#endif
+#if defined(__sun)
+# ifndef _XOPEN_SOURCE /* SunOS already defines */
+# define _XOPEN_SOURCE /* XPGx */
+# endif
+# define _XOPEN_SOURCE_EXTENDED 1 /* XPG4v2 */
+# ifndef __EXTENSIONS__ /* SunOS already defines */
+# define __EXTENSIONS__ /* reallocarray, etc. */
+# endif
+#endif
+#if !defined(__BEGIN_DECLS)
+# define __BEGIN_DECLS
+#endif
+#if !defined(__END_DECLS)
+# define __END_DECLS
+#endif
+
+__HEREDOC__
+
+# This is just for size_t, mode_t, and dev_t.
+# Most of these functions, in the real world, pull in <string.h> or
+# someting that pulls in support for size_t.
+# Our function declarations are standalone, so specify them here.
+
+if [ ${HAVE_FTS} -eq 0 -o \
+ ${HAVE_MD5} -eq 0 -o \
+ ${HAVE_MEMMEM} -eq 0 -o \
+ ${HAVE_MEMRCHR} -eq 0 -o \
+ ${HAVE_MKFIFOAT} -eq 0 -o \
+ ${HAVE_MKNODAT} -eq 0 -o \
+ ${HAVE_READPASSPHRASE} -eq 0 -o \
+ ${HAVE_REALLOCARRAY} -eq 0 -o \
+ ${HAVE_RECALLOCARRAY} -eq 0 -o \
+ ${HAVE_SETRESGID} -eq 0 -o \
+ ${HAVE_SETRESUID} -eq 0 -o \
+ ${HAVE_SHA2_H} -eq 0 -o \
+ ${HAVE_STRLCAT} -eq 0 -o \
+ ${HAVE_STRLCPY} -eq 0 -o \
+ ${HAVE_STRNDUP} -eq 0 -o \
+ ${HAVE_STRNLEN} -eq 0 ]
+then
+ echo "#include <sys/types.h> /* size_t, mode_t, dev_t */ "
+ echo
+fi
+
+if [ ${HAVE_MD5} -eq 0 -o \
+ ${HAVE_SHA2_H} -eq 0 ]
+then
+ echo "#include <stdint.h> /* C99 [u]int[nn]_t types */"
+ echo
+fi
+
+if [ ${HAVE_ERR} -eq 0 ]
+then
+ echo "#include <stdarg.h> /* err(3) */"
+ echo
+fi
+
+# Now we handle our HAVE_xxxx values.
+# Most will just be defined as 0 or 1.
+
+if [ ${HAVE_PATH_MAX} -eq 0 ]
+then
+ echo "#define PATH_MAX 4096"
+ echo
+fi
+
+if [ ${HAVE_WAIT_ANY} -eq 0 ]
+then
+ echo "#define WAIT_ANY (-1) /* sys/wait.h */"
+ echo "#define WAIT_MYPGRP 0"
+ echo
+fi
+
+
+if [ ${HAVE_INFTIM} -eq 0 ]
+then
+ echo "#define INFTIM (-1) /* poll.h */"
+ echo
+fi
+
+cat << __HEREDOC__
+/*
+ * Results of configuration feature-testing.
+ */
+#define HAVE_ARC4RANDOM ${HAVE_ARC4RANDOM}
+#define HAVE_B64_NTOP ${HAVE_B64_NTOP}
+#define HAVE_CAPSICUM ${HAVE_CAPSICUM}
+#define HAVE_CRYPT ${HAVE_CRYPT}
+#define HAVE_ENDIAN_H ${HAVE_ENDIAN_H}
+#define HAVE_ERR ${HAVE_ERR}
+#define HAVE_EXPLICIT_BZERO ${HAVE_EXPLICIT_BZERO}
+#define HAVE_FTS ${HAVE_FTS}
+#define HAVE_GETEXECNAME ${HAVE_GETEXECNAME}
+#define HAVE_GETPROGNAME ${HAVE_GETPROGNAME}
+#define HAVE_INFTIM ${HAVE_INFTIM}
+#define HAVE_MD5 ${HAVE_MD5}
+#define HAVE_MEMMEM ${HAVE_MEMMEM}
+#define HAVE_MEMRCHR ${HAVE_MEMRCHR}
+#define HAVE_MEMSET_S ${HAVE_MEMSET_S}
+#define HAVE_MKFIFOAT ${HAVE_MKFIFOAT}
+#define HAVE_MKNODAT ${HAVE_MKNODAT}
+#define HAVE_OSBYTEORDER_H ${HAVE_OSBYTEORDER_H}
+#define HAVE_PATH_MAX ${HAVE_PATH_MAX}
+#define HAVE_PLEDGE ${HAVE_PLEDGE}
+#define HAVE_PROGRAM_INVOCATION_SHORT_NAME ${HAVE_PROGRAM_INVOCATION_SHORT_NAME}
+#define HAVE_READPASSPHRASE ${HAVE_READPASSPHRASE}
+#define HAVE_REALLOCARRAY ${HAVE_REALLOCARRAY}
+#define HAVE_RECALLOCARRAY ${HAVE_RECALLOCARRAY}
+#define HAVE_SANDBOX_INIT ${HAVE_SANDBOX_INIT}
+#define HAVE_SECCOMP_FILTER ${HAVE_SECCOMP_FILTER}
+#define HAVE_SETRESGID ${HAVE_SETRESGID}
+#define HAVE_SETRESUID ${HAVE_SETRESUID}
+#define HAVE_SHA2_H ${HAVE_SHA2_H}
+#define HAVE_SOCK_NONBLOCK ${HAVE_SOCK_NONBLOCK}
+#define HAVE_STRLCAT ${HAVE_STRLCAT}
+#define HAVE_STRLCPY ${HAVE_STRLCPY}
+#define HAVE_STRNDUP ${HAVE_STRNDUP}
+#define HAVE_STRNLEN ${HAVE_STRNLEN}
+#define HAVE_STRTONUM ${HAVE_STRTONUM}
+#define HAVE_SYS_BYTEORDER_H ${HAVE_SYS_BYTEORDER_H}
+#define HAVE_SYS_ENDIAN_H ${HAVE_SYS_ENDIAN_H}
+#define HAVE_SYS_MKDEV_H ${HAVE_SYS_MKDEV_H}
+#define HAVE_SYS_QUEUE ${HAVE_SYS_QUEUE}
+#define HAVE_SYS_SYSMACROS_H ${HAVE_SYS_SYSMACROS_H}
+#define HAVE_SYS_TREE ${HAVE_SYS_TREE}
+#define HAVE_SYSTRACE ${HAVE_SYSTRACE}
+#define HAVE_UNVEIL ${HAVE_UNVEIL}
+#define HAVE_WAIT_ANY ${HAVE_WAIT_ANY}
+#define HAVE___PROGNAME ${HAVE___PROGNAME}
+
+__HEREDOC__
+
+# Compat for libkern/OSByteOrder.h in place of endian.h.
+
+[ ${HAVE_OSBYTEORDER_H} -eq 1 -a \
+ ${HAVE_ENDIAN_H} -eq 0 -a \
+ ${HAVE_SYS_BYTEORDER_H} -eq 0 -a \
+ ${HAVE_SYS_ENDIAN_H} -eq 0 ] \
+ && cat << __HEREDOC__
+/*
+ * endian.h compatibility with libkern/OSByteOrder.h.
+ */
+#define htobe16(x) OSSwapHostToBigInt16(x)
+#define htole16(x) OSSwapHostToLittleInt16(x)
+#define be16toh(x) OSSwapBigToHostInt16(x)
+#define le16toh(x) OSSwapLittleToHostInt16(x)
+#define htobe32(x) OSSwapHostToBigInt32(x)
+#define htole32(x) OSSwapHostToLittleInt32(x)
+#define be32toh(x) OSSwapBigToHostInt32(x)
+#define le32toh(x) OSSwapLittleToHostInt32(x)
+#define htobe64(x) OSSwapHostToBigInt64(x)
+#define htole64(x) OSSwapHostToLittleInt64(x)
+#define be64toh(x) OSSwapBigToHostInt64(x)
+#define le64toh(x) OSSwapLittleToHostInt64(x)
+
+__HEREDOC__
+
+[ ${HAVE_SYS_BYTEORDER_H} -eq 1 -a \
+ ${HAVE_ENDIAN_H} -eq 0 -a \
+ ${HAVE_OSBYTEORDER_H} -eq 0 -a \
+ ${HAVE_SYS_ENDIAN_H} -eq 0 ] \
+ && cat << __HEREDOC__
+/*
+ * endian.h compatibility with sys/byteorder.h.
+ */
+#define htobe16(x) BE_16(x)
+#define htole16(x) LE_16(x)
+#define be16toh(x) BE_16(x)
+#define le16toh(x) LE_16(x)
+#define htobe32(x) BE_32(x)
+#define htole32(x) LE_32(x)
+#define be32toh(x) BE_32(x)
+#define le32toh(x) LE_32(x)
+#define htobe64(x) BE_64(x)
+#define htole64(x) LE_64(x)
+#define be64toh(x) BE_64(x)
+#define le64toh(x) LE_64(x)
+
+__HEREDOC__
+
+# Make minor()/major()/makedev() easier to use.
+
+cat << __HEREDOC__
+/*
+ * Handle the various major()/minor() header files.
+ * Use sys/mkdev.h before sys/sysmacros.h because SunOS
+ * has both, where only the former works properly.
+ */
+#if HAVE_SYS_MKDEV_H
+# define COMPAT_MAJOR_MINOR_H <sys/mkdev.h>
+#elif HAVE_SYS_SYSMACROS_H
+# define COMPAT_MAJOR_MINOR_H <sys/sysmacros.h>
+#else
+# define COMPAT_MAJOR_MINOR_H <sys/types.h>
+#endif
+
+__HEREDOC__
+
+# Make endian.h easier by providing a COMPAT_ENDIAN_H.
+
+cat << __HEREDOC__
+/*
+ * Make it easier to include endian.h forms.
+ */
+#if HAVE_ENDIAN_H
+# define COMPAT_ENDIAN_H <endian.h>
+#elif HAVE_SYS_ENDIAN_H
+# define COMPAT_ENDIAN_H <sys/endian.h>
+#elif HAVE_OSBYTEORDER_H
+# define COMPAT_ENDIAN_H <libkern/OSByteOrder.h>
+#elif HAVE_SYS_BYTEORDER_H
+# define COMPAT_ENDIAN_H <sys/byteorder.h>
+#else
+# warning No suitable endian.h could be found.
+# warning Please e-mail the maintainers with your OS.
+# define COMPAT_ENDIAN_H <endian.h>
+#endif
+
+__HEREDOC__
+
+# Now we do our function declarations for missing functions.
+
+[ ${HAVE_ERR} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility functions for err(3).
+ */
+extern void err(int, const char *, ...);
+extern void errx(int, const char *, ...);
+extern void warn(const char *, ...);
+extern void warnx(const char *, ...);
+extern void vwarn(const char *, va_list);
+extern void vwarnx(const char *, va_list);
+__HEREDOC__
+
+[ ${HAVE_MD5} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for md4(3).
+ */
+#define MD5_BLOCK_LENGTH 64
+#define MD5_DIGEST_LENGTH 16
+#define MD5_DIGEST_STRING_LENGTH (MD5_DIGEST_LENGTH * 2 + 1)
+
+typedef struct MD5Context {
+ uint32_t state[4];
+ uint64_t count;
+ uint8_t buffer[MD5_BLOCK_LENGTH];
+} MD5_CTX;
+
+extern void MD5Init(MD5_CTX *);
+extern void MD5Update(MD5_CTX *, const uint8_t *, size_t);
+extern void MD5Pad(MD5_CTX *);
+extern void MD5Transform(uint32_t [4], const uint8_t [MD5_BLOCK_LENGTH]);
+extern char *MD5End(MD5_CTX *, char *);
+extern void MD5Final(uint8_t [MD5_DIGEST_LENGTH], MD5_CTX *);
+
+__HEREDOC__
+
+[ ${HAVE_SHA2_H} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for sha2(3).
+ */
+
+/*** SHA-256/384/512 Various Length Definitions ***********************/
+#define SHA256_BLOCK_LENGTH 64
+#define SHA256_DIGEST_LENGTH 32
+#define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1)
+#define SHA384_BLOCK_LENGTH 128
+#define SHA384_DIGEST_LENGTH 48
+#define SHA384_DIGEST_STRING_LENGTH (SHA384_DIGEST_LENGTH * 2 + 1)
+#define SHA512_BLOCK_LENGTH 128
+#define SHA512_DIGEST_LENGTH 64
+#define SHA512_DIGEST_STRING_LENGTH (SHA512_DIGEST_LENGTH * 2 + 1)
+#define SHA512_256_BLOCK_LENGTH 128
+#define SHA512_256_DIGEST_LENGTH 32
+#define SHA512_256_DIGEST_STRING_LENGTH (SHA512_256_DIGEST_LENGTH * 2 + 1)
+
+/*** SHA-224/256/384/512 Context Structure *******************************/
+typedef struct _SHA2_CTX {
+ union {
+ uint32_t st32[8];
+ uint64_t st64[8];
+ } state;
+ uint64_t bitcount[2];
+ uint8_t buffer[SHA512_BLOCK_LENGTH];
+} SHA2_CTX;
+
+void SHA256Init(SHA2_CTX *);
+void SHA256Transform(uint32_t state[8], const uint8_t [SHA256_BLOCK_LENGTH]);
+void SHA256Update(SHA2_CTX *, const uint8_t *, size_t);
+void SHA256Pad(SHA2_CTX *);
+void SHA256Final(uint8_t [SHA256_DIGEST_LENGTH], SHA2_CTX *);
+char *SHA256End(SHA2_CTX *, char *);
+char *SHA256File(const char *, char *);
+char *SHA256FileChunk(const char *, char *, off_t, off_t);
+char *SHA256Data(const uint8_t *, size_t, char *);
+
+void SHA384Init(SHA2_CTX *);
+void SHA384Transform(uint64_t state[8], const uint8_t [SHA384_BLOCK_LENGTH]);
+void SHA384Update(SHA2_CTX *, const uint8_t *, size_t);
+void SHA384Pad(SHA2_CTX *);
+void SHA384Final(uint8_t [SHA384_DIGEST_LENGTH], SHA2_CTX *);
+char *SHA384End(SHA2_CTX *, char *);
+char *SHA384File(const char *, char *);
+char *SHA384FileChunk(const char *, char *, off_t, off_t);
+char *SHA384Data(const uint8_t *, size_t, char *);
+
+void SHA512Init(SHA2_CTX *);
+void SHA512Transform(uint64_t state[8], const uint8_t [SHA512_BLOCK_LENGTH]);
+void SHA512Update(SHA2_CTX *, const uint8_t *, size_t);
+void SHA512Pad(SHA2_CTX *);
+void SHA512Final(uint8_t [SHA512_DIGEST_LENGTH], SHA2_CTX *);
+char *SHA512End(SHA2_CTX *, char *);
+char *SHA512File(const char *, char *);
+char *SHA512FileChunk(const char *, char *, off_t, off_t);
+char *SHA512Data(const uint8_t *, size_t, char *);
+
+__HEREDOC__
+
+if [ ${HAVE_SECCOMP_FILTER} -eq 1 ]; then
+ arch=$(uname -m 2>/dev/null || echo unknown)
+ case "$arch" in
+ x86_64)
+ echo "#define SECCOMP_AUDIT_ARCH AUDIT_ARCH_X86_64"
+ ;;
+ i*86)
+ echo "#define SECCOMP_AUDIT_ARCH AUDIT_ARCH_I386"
+ ;;
+ arm*)
+ echo "#define SECCOMP_AUDIT_ARCH AUDIT_ARCH_ARM"
+ ;;
+ aarch64)
+ echo "#define SECCOMP_AUDIT_ARCH AUDIT_ARCH_AARCH64"
+ ;;
+ esac
+ echo
+fi
+
+[ ${HAVE_B64_NTOP} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for b64_ntop(3).
+ */
+extern int b64_ntop(unsigned char const *, size_t, char *, size_t);
+extern int b64_pton(char const *, unsigned char *, size_t);
+
+__HEREDOC__
+
+[ ${HAVE_EXPLICIT_BZERO} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for explicit_bzero(3).
+ */
+extern void explicit_bzero(void *, size_t);
+
+__HEREDOC__
+
+[ ${HAVE_MEMMEM} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for memmem(3).
+ */
+void *memmem(const void *, size_t, const void *, size_t);
+
+__HEREDOC__
+
+[ ${HAVE_MEMRCHR} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for memrchr(3).
+ */
+void *memrchr(const void *b, int, size_t);
+
+__HEREDOC__
+
+[ ${HAVE_GETPROGNAME} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for getprogname(3).
+ */
+extern const char *getprogname(void);
+
+__HEREDOC__
+
+[ ${HAVE_READPASSPHRASE} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Macros and function required for readpassphrase(3).
+ */
+#define RPP_ECHO_OFF 0x00
+#define RPP_ECHO_ON 0x01
+#define RPP_REQUIRE_TTY 0x02
+#define RPP_FORCELOWER 0x04
+#define RPP_FORCEUPPER 0x08
+#define RPP_SEVENBIT 0x10
+#define RPP_STDIN 0x20
+char *readpassphrase(const char *, char *, size_t, int);
+
+__HEREDOC__
+
+[ ${HAVE_REALLOCARRAY} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for reallocarray(3).
+ */
+extern void *reallocarray(void *, size_t, size_t);
+
+__HEREDOC__
+
+[ ${HAVE_RECALLOCARRAY} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for recallocarray(3).
+ */
+extern void *recallocarray(void *, size_t, size_t, size_t);
+
+__HEREDOC__
+
+[ ${HAVE_STRLCAT} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for strlcat(3).
+ */
+extern size_t strlcat(char *, const char *, size_t);
+
+__HEREDOC__
+
+[ ${HAVE_STRLCPY} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for strlcpy(3).
+ */
+extern size_t strlcpy(char *, const char *, size_t);
+
+__HEREDOC__
+
+[ ${HAVE_STRNDUP} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for strndup(3).
+ */
+extern char *strndup(const char *, size_t);
+
+__HEREDOC__
+
+[ ${HAVE_STRNLEN} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for strnlen(3).
+ */
+extern size_t strnlen(const char *, size_t);
+
+__HEREDOC__
+
+[ ${HAVE_STRTONUM} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for strotnum(3).
+ */
+extern long long strtonum(const char *, long long, long long, const char **);
+
+__HEREDOC__
+
+[ ${HAVE_MKFIFOAT} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for mkfifoat(2).
+ */
+int mkfifoat(int, const char *, mode_t);
+
+__HEREDOC__
+
+[ ${HAVE_MKNODAT} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for mknodat(2).
+ */
+int mknodat(int, const char *, mode_t, dev_t);
+
+__HEREDOC__
+
+[ ${HAVE_SETRESGID} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for setresgid(2).
+ */
+int setresgid(gid_t rgid, gid_t egid, gid_t sgid);
+
+__HEREDOC__
+
+[ ${HAVE_SETRESUID} -eq 0 ] && \
+ cat << __HEREDOC__
+/*
+ * Compatibility for setresuid(2).
+ */
+int setresuid(uid_t ruid, uid_t euid, uid_t suid);
+
+__HEREDOC__
+
+if [ ${HAVE_SYS_QUEUE} -eq 0 ]; then
+ cat << __HEREDOC__
+/*
+ * A compatible version of OpenBSD <sys/queue.h>.
+ */
+/*
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)queue.h 8.5 (Berkeley) 8/20/94
+ */
+
+/* OPENBSD ORIGINAL: sys/sys/queue.h */
+
+/*
+ * Require for OS/X and other platforms that have old/broken/incomplete
+ * <sys/queue.h>.
+ */
+#undef SLIST_HEAD
+#undef SLIST_HEAD_INITIALIZER
+#undef SLIST_ENTRY
+#undef SLIST_FOREACH_PREVPTR
+#undef SLIST_FOREACH_SAFE
+#undef SLIST_FIRST
+#undef SLIST_END
+#undef SLIST_EMPTY
+#undef SLIST_NEXT
+#undef SLIST_FOREACH
+#undef SLIST_INIT
+#undef SLIST_INSERT_AFTER
+#undef SLIST_INSERT_HEAD
+#undef SLIST_REMOVE_HEAD
+#undef SLIST_REMOVE_AFTER
+#undef SLIST_REMOVE
+#undef SLIST_REMOVE_NEXT
+#undef LIST_HEAD
+#undef LIST_HEAD_INITIALIZER
+#undef LIST_ENTRY
+#undef LIST_FIRST
+#undef LIST_END
+#undef LIST_EMPTY
+#undef LIST_NEXT
+#undef LIST_FOREACH
+#undef LIST_FOREACH_SAFE
+#undef LIST_INIT
+#undef LIST_INSERT_AFTER
+#undef LIST_INSERT_BEFORE
+#undef LIST_INSERT_HEAD
+#undef LIST_REMOVE
+#undef LIST_REPLACE
+#undef SIMPLEQ_HEAD
+#undef SIMPLEQ_HEAD_INITIALIZER
+#undef SIMPLEQ_ENTRY
+#undef SIMPLEQ_FIRST
+#undef SIMPLEQ_END
+#undef SIMPLEQ_EMPTY
+#undef SIMPLEQ_NEXT
+#undef SIMPLEQ_FOREACH
+#undef SIMPLEQ_FOREACH_SAFE
+#undef SIMPLEQ_INIT
+#undef SIMPLEQ_INSERT_HEAD
+#undef SIMPLEQ_INSERT_TAIL
+#undef SIMPLEQ_INSERT_AFTER
+#undef SIMPLEQ_REMOVE_HEAD
+#undef TAILQ_HEAD
+#undef TAILQ_HEAD_INITIALIZER
+#undef TAILQ_ENTRY
+#undef TAILQ_FIRST
+#undef TAILQ_END
+#undef TAILQ_NEXT
+#undef TAILQ_LAST
+#undef TAILQ_PREV
+#undef TAILQ_EMPTY
+#undef TAILQ_FOREACH
+#undef TAILQ_FOREACH_REVERSE
+#undef TAILQ_FOREACH_SAFE
+#undef TAILQ_FOREACH_REVERSE_SAFE
+#undef TAILQ_INIT
+#undef TAILQ_INSERT_HEAD
+#undef TAILQ_INSERT_TAIL
+#undef TAILQ_INSERT_AFTER
+#undef TAILQ_INSERT_BEFORE
+#undef TAILQ_REMOVE
+#undef TAILQ_REPLACE
+#undef CIRCLEQ_HEAD
+#undef CIRCLEQ_HEAD_INITIALIZER
+#undef CIRCLEQ_ENTRY
+#undef CIRCLEQ_FIRST
+#undef CIRCLEQ_LAST
+#undef CIRCLEQ_END
+#undef CIRCLEQ_NEXT
+#undef CIRCLEQ_PREV
+#undef CIRCLEQ_EMPTY
+#undef CIRCLEQ_FOREACH
+#undef CIRCLEQ_FOREACH_REVERSE
+#undef CIRCLEQ_INIT
+#undef CIRCLEQ_INSERT_AFTER
+#undef CIRCLEQ_INSERT_BEFORE
+#undef CIRCLEQ_INSERT_HEAD
+#undef CIRCLEQ_INSERT_TAIL
+#undef CIRCLEQ_REMOVE
+#undef CIRCLEQ_REPLACE
+
+/*
+ * This file defines five types of data structures: singly-linked lists,
+ * lists, simple queues, tail queues, and circular queues.
+ *
+ *
+ * A singly-linked list is headed by a single forward pointer. The elements
+ * are singly linked for minimum space and pointer manipulation overhead at
+ * the expense of O(n) removal for arbitrary elements. New elements can be
+ * added to the list after an existing element or at the head of the list.
+ * Elements being removed from the head of the list should use the explicit
+ * macro for this purpose for optimum efficiency. A singly-linked list may
+ * only be traversed in the forward direction. Singly-linked lists are ideal
+ * for applications with large datasets and few or no removals or for
+ * implementing a LIFO queue.
+ *
+ * A list is headed by a single forward pointer (or an array of forward
+ * pointers for a hash table header). The elements are doubly linked
+ * so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before
+ * or after an existing element or at the head of the list. A list
+ * may only be traversed in the forward direction.
+ *
+ * A simple queue is headed by a pair of pointers, one the head of the
+ * list and the other to the tail of the list. The elements are singly
+ * linked to save space, so elements can only be removed from the
+ * head of the list. New elements can be added to the list before or after
+ * an existing element, at the head of the list, or at the end of the
+ * list. A simple queue may only be traversed in the forward direction.
+ *
+ * A tail queue is headed by a pair of pointers, one to the head of the
+ * list and the other to the tail of the list. The elements are doubly
+ * linked so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before or
+ * after an existing element, at the head of the list, or at the end of
+ * the list. A tail queue may be traversed in either direction.
+ *
+ * A circle queue is headed by a pair of pointers, one to the head of the
+ * list and the other to the tail of the list. The elements are doubly
+ * linked so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before or after
+ * an existing element, at the head of the list, or at the end of the list.
+ * A circle queue may be traversed in either direction, but has a more
+ * complex end of list detection.
+ *
+ * For details on the use of these macros, see the queue(3) manual page.
+ */
+
+#if defined(QUEUE_MACRO_DEBUG) || (defined(_KERNEL) && defined(DIAGNOSTIC))
+#define _Q_INVALIDATE(a) (a) = ((void *)-1)
+#else
+#define _Q_INVALIDATE(a)
+#endif
+
+/*
+ * Singly-linked List definitions.
+ */
+#define SLIST_HEAD(name, type) \\
+struct name { \\
+ struct type *slh_first; /* first element */ \\
+}
+
+#define SLIST_HEAD_INITIALIZER(head) \\
+ { NULL }
+
+#define SLIST_ENTRY(type) \\
+struct { \\
+ struct type *sle_next; /* next element */ \\
+}
+
+/*
+ * Singly-linked List access methods.
+ */
+#define SLIST_FIRST(head) ((head)->slh_first)
+#define SLIST_END(head) NULL
+#define SLIST_EMPTY(head) (SLIST_FIRST(head) == SLIST_END(head))
+#define SLIST_NEXT(elm, field) ((elm)->field.sle_next)
+
+#define SLIST_FOREACH(var, head, field) \\
+ for((var) = SLIST_FIRST(head); \\
+ (var) != SLIST_END(head); \\
+ (var) = SLIST_NEXT(var, field))
+
+#define SLIST_FOREACH_SAFE(var, head, field, tvar) \\
+ for ((var) = SLIST_FIRST(head); \\
+ (var) && ((tvar) = SLIST_NEXT(var, field), 1); \\
+ (var) = (tvar))
+
+/*
+ * Singly-linked List functions.
+ */
+#define SLIST_INIT(head) { \\
+ SLIST_FIRST(head) = SLIST_END(head); \\
+}
+
+#define SLIST_INSERT_AFTER(slistelm, elm, field) do { \\
+ (elm)->field.sle_next = (slistelm)->field.sle_next; \\
+ (slistelm)->field.sle_next = (elm); \\
+} while (0)
+
+#define SLIST_INSERT_HEAD(head, elm, field) do { \\
+ (elm)->field.sle_next = (head)->slh_first; \\
+ (head)->slh_first = (elm); \\
+} while (0)
+
+#define SLIST_REMOVE_AFTER(elm, field) do { \\
+ (elm)->field.sle_next = (elm)->field.sle_next->field.sle_next; \\
+} while (0)
+
+#define SLIST_REMOVE_HEAD(head, field) do { \\
+ (head)->slh_first = (head)->slh_first->field.sle_next; \\
+} while (0)
+
+#define SLIST_REMOVE(head, elm, type, field) do { \\
+ if ((head)->slh_first == (elm)) { \\
+ SLIST_REMOVE_HEAD((head), field); \\
+ } else { \\
+ struct type *curelm = (head)->slh_first; \\
+ \\
+ while (curelm->field.sle_next != (elm)) \\
+ curelm = curelm->field.sle_next; \\
+ curelm->field.sle_next = \\
+ curelm->field.sle_next->field.sle_next; \\
+ _Q_INVALIDATE((elm)->field.sle_next); \\
+ } \\
+} while (0)
+
+/*
+ * List definitions.
+ */
+#define LIST_HEAD(name, type) \\
+struct name { \\
+ struct type *lh_first; /* first element */ \\
+}
+
+#define LIST_HEAD_INITIALIZER(head) \\
+ { NULL }
+
+#define LIST_ENTRY(type) \\
+struct { \\
+ struct type *le_next; /* next element */ \\
+ struct type **le_prev; /* address of previous next element */ \\
+}
+
+/*
+ * List access methods
+ */
+#define LIST_FIRST(head) ((head)->lh_first)
+#define LIST_END(head) NULL
+#define LIST_EMPTY(head) (LIST_FIRST(head) == LIST_END(head))
+#define LIST_NEXT(elm, field) ((elm)->field.le_next)
+
+#define LIST_FOREACH(var, head, field) \\
+ for((var) = LIST_FIRST(head); \\
+ (var)!= LIST_END(head); \\
+ (var) = LIST_NEXT(var, field))
+
+#define LIST_FOREACH_SAFE(var, head, field, tvar) \\
+ for ((var) = LIST_FIRST(head); \\
+ (var) && ((tvar) = LIST_NEXT(var, field), 1); \\
+ (var) = (tvar))
+
+/*
+ * List functions.
+ */
+#define LIST_INIT(head) do { \\
+ LIST_FIRST(head) = LIST_END(head); \\
+} while (0)
+
+#define LIST_INSERT_AFTER(listelm, elm, field) do { \\
+ if (((elm)->field.le_next = (listelm)->field.le_next) != NULL) \\
+ (listelm)->field.le_next->field.le_prev = \\
+ &(elm)->field.le_next; \\
+ (listelm)->field.le_next = (elm); \\
+ (elm)->field.le_prev = &(listelm)->field.le_next; \\
+} while (0)
+
+#define LIST_INSERT_BEFORE(listelm, elm, field) do { \\
+ (elm)->field.le_prev = (listelm)->field.le_prev; \\
+ (elm)->field.le_next = (listelm); \\
+ *(listelm)->field.le_prev = (elm); \\
+ (listelm)->field.le_prev = &(elm)->field.le_next; \\
+} while (0)
+
+#define LIST_INSERT_HEAD(head, elm, field) do { \\
+ if (((elm)->field.le_next = (head)->lh_first) != NULL) \\
+ (head)->lh_first->field.le_prev = &(elm)->field.le_next;\\
+ (head)->lh_first = (elm); \\
+ (elm)->field.le_prev = &(head)->lh_first; \\
+} while (0)
+
+#define LIST_REMOVE(elm, field) do { \\
+ if ((elm)->field.le_next != NULL) \\
+ (elm)->field.le_next->field.le_prev = \\
+ (elm)->field.le_prev; \\
+ *(elm)->field.le_prev = (elm)->field.le_next; \\
+ _Q_INVALIDATE((elm)->field.le_prev); \\
+ _Q_INVALIDATE((elm)->field.le_next); \\
+} while (0)
+
+#define LIST_REPLACE(elm, elm2, field) do { \\
+ if (((elm2)->field.le_next = (elm)->field.le_next) != NULL) \\
+ (elm2)->field.le_next->field.le_prev = \\
+ &(elm2)->field.le_next; \\
+ (elm2)->field.le_prev = (elm)->field.le_prev; \\
+ *(elm2)->field.le_prev = (elm2); \\
+ _Q_INVALIDATE((elm)->field.le_prev); \\
+ _Q_INVALIDATE((elm)->field.le_next); \\
+} while (0)
+
+/*
+ * Simple queue definitions.
+ */
+#define SIMPLEQ_HEAD(name, type) \\
+struct name { \\
+ struct type *sqh_first; /* first element */ \\
+ struct type **sqh_last; /* addr of last next element */ \\
+}
+
+#define SIMPLEQ_HEAD_INITIALIZER(head) \\
+ { NULL, &(head).sqh_first }
+
+#define SIMPLEQ_ENTRY(type) \\
+struct { \\
+ struct type *sqe_next; /* next element */ \\
+}
+
+/*
+ * Simple queue access methods.
+ */
+#define SIMPLEQ_FIRST(head) ((head)->sqh_first)
+#define SIMPLEQ_END(head) NULL
+#define SIMPLEQ_EMPTY(head) (SIMPLEQ_FIRST(head) == SIMPLEQ_END(head))
+#define SIMPLEQ_NEXT(elm, field) ((elm)->field.sqe_next)
+
+#define SIMPLEQ_FOREACH(var, head, field) \\
+ for((var) = SIMPLEQ_FIRST(head); \\
+ (var) != SIMPLEQ_END(head); \\
+ (var) = SIMPLEQ_NEXT(var, field))
+
+#define SIMPLEQ_FOREACH_SAFE(var, head, field, tvar) \\
+ for ((var) = SIMPLEQ_FIRST(head); \\
+ (var) && ((tvar) = SIMPLEQ_NEXT(var, field), 1); \\
+ (var) = (tvar))
+
+/*
+ * Simple queue functions.
+ */
+#define SIMPLEQ_INIT(head) do { \\
+ (head)->sqh_first = NULL; \\
+ (head)->sqh_last = &(head)->sqh_first; \\
+} while (0)
+
+#define SIMPLEQ_INSERT_HEAD(head, elm, field) do { \\
+ if (((elm)->field.sqe_next = (head)->sqh_first) == NULL) \\
+ (head)->sqh_last = &(elm)->field.sqe_next; \\
+ (head)->sqh_first = (elm); \\
+} while (0)
+
+#define SIMPLEQ_INSERT_TAIL(head, elm, field) do { \\
+ (elm)->field.sqe_next = NULL; \\
+ *(head)->sqh_last = (elm); \\
+ (head)->sqh_last = &(elm)->field.sqe_next; \\
+} while (0)
+
+#define SIMPLEQ_INSERT_AFTER(head, listelm, elm, field) do { \\
+ if (((elm)->field.sqe_next = (listelm)->field.sqe_next) == NULL)\\
+ (head)->sqh_last = &(elm)->field.sqe_next; \\
+ (listelm)->field.sqe_next = (elm); \\
+} while (0)
+
+#define SIMPLEQ_REMOVE_HEAD(head, field) do { \\
+ if (((head)->sqh_first = (head)->sqh_first->field.sqe_next) == NULL) \\
+ (head)->sqh_last = &(head)->sqh_first; \\
+} while (0)
+
+#define SIMPLEQ_REMOVE_AFTER(head, elm, field) do { \\
+ if (((elm)->field.sqe_next = (elm)->field.sqe_next->field.sqe_next) \\
+ == NULL) \\
+ (head)->sqh_last = &(elm)->field.sqe_next; \\
+} while (0)
+
+/*
+ * Tail queue definitions.
+ */
+#define TAILQ_HEAD(name, type) \\
+struct name { \\
+ struct type *tqh_first; /* first element */ \\
+ struct type **tqh_last; /* addr of last next element */ \\
+}
+
+#define TAILQ_HEAD_INITIALIZER(head) \\
+ { NULL, &(head).tqh_first }
+
+#define TAILQ_ENTRY(type) \\
+struct { \\
+ struct type *tqe_next; /* next element */ \\
+ struct type **tqe_prev; /* address of previous next element */ \\
+}
+
+/*
+ * tail queue access methods
+ */
+#define TAILQ_FIRST(head) ((head)->tqh_first)
+#define TAILQ_END(head) NULL
+#define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
+#define TAILQ_LAST(head, headname) \\
+ (*(((struct headname *)((head)->tqh_last))->tqh_last))
+/* XXX */
+#define TAILQ_PREV(elm, headname, field) \\
+ (*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
+#define TAILQ_EMPTY(head) \\
+ (TAILQ_FIRST(head) == TAILQ_END(head))
+
+#define TAILQ_FOREACH(var, head, field) \\
+ for((var) = TAILQ_FIRST(head); \\
+ (var) != TAILQ_END(head); \\
+ (var) = TAILQ_NEXT(var, field))
+
+#define TAILQ_FOREACH_SAFE(var, head, field, tvar) \\
+ for ((var) = TAILQ_FIRST(head); \\
+ (var) != TAILQ_END(head) && \\
+ ((tvar) = TAILQ_NEXT(var, field), 1); \\
+ (var) = (tvar))
+
+
+#define TAILQ_FOREACH_REVERSE(var, head, headname, field) \\
+ for((var) = TAILQ_LAST(head, headname); \\
+ (var) != TAILQ_END(head); \\
+ (var) = TAILQ_PREV(var, headname, field))
+
+#define TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar) \\
+ for ((var) = TAILQ_LAST(head, headname); \\
+ (var) != TAILQ_END(head) && \\
+ ((tvar) = TAILQ_PREV(var, headname, field), 1); \\
+ (var) = (tvar))
+
+/*
+ * Tail queue functions.
+ */
+#define TAILQ_INIT(head) do { \\
+ (head)->tqh_first = NULL; \\
+ (head)->tqh_last = &(head)->tqh_first; \\
+} while (0)
+
+#define TAILQ_INSERT_HEAD(head, elm, field) do { \\
+ if (((elm)->field.tqe_next = (head)->tqh_first) != NULL) \\
+ (head)->tqh_first->field.tqe_prev = \\
+ &(elm)->field.tqe_next; \\
+ else \\
+ (head)->tqh_last = &(elm)->field.tqe_next; \\
+ (head)->tqh_first = (elm); \\
+ (elm)->field.tqe_prev = &(head)->tqh_first; \\
+} while (0)
+
+#define TAILQ_INSERT_TAIL(head, elm, field) do { \\
+ (elm)->field.tqe_next = NULL; \\
+ (elm)->field.tqe_prev = (head)->tqh_last; \\
+ *(head)->tqh_last = (elm); \\
+ (head)->tqh_last = &(elm)->field.tqe_next; \\
+} while (0)
+
+#define TAILQ_INSERT_AFTER(head, listelm, elm, field) do { \\
+ if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\\
+ (elm)->field.tqe_next->field.tqe_prev = \\
+ &(elm)->field.tqe_next; \\
+ else \\
+ (head)->tqh_last = &(elm)->field.tqe_next; \\
+ (listelm)->field.tqe_next = (elm); \\
+ (elm)->field.tqe_prev = &(listelm)->field.tqe_next; \\
+} while (0)
+
+#define TAILQ_INSERT_BEFORE(listelm, elm, field) do { \\
+ (elm)->field.tqe_prev = (listelm)->field.tqe_prev; \\
+ (elm)->field.tqe_next = (listelm); \\
+ *(listelm)->field.tqe_prev = (elm); \\
+ (listelm)->field.tqe_prev = &(elm)->field.tqe_next; \\
+} while (0)
+
+#define TAILQ_REMOVE(head, elm, field) do { \\
+ if (((elm)->field.tqe_next) != NULL) \\
+ (elm)->field.tqe_next->field.tqe_prev = \\
+ (elm)->field.tqe_prev; \\
+ else \\
+ (head)->tqh_last = (elm)->field.tqe_prev; \\
+ *(elm)->field.tqe_prev = (elm)->field.tqe_next; \\
+ _Q_INVALIDATE((elm)->field.tqe_prev); \\
+ _Q_INVALIDATE((elm)->field.tqe_next); \\
+} while (0)
+
+#define TAILQ_REPLACE(head, elm, elm2, field) do { \\
+ if (((elm2)->field.tqe_next = (elm)->field.tqe_next) != NULL) \\
+ (elm2)->field.tqe_next->field.tqe_prev = \\
+ &(elm2)->field.tqe_next; \\
+ else \\
+ (head)->tqh_last = &(elm2)->field.tqe_next; \\
+ (elm2)->field.tqe_prev = (elm)->field.tqe_prev; \\
+ *(elm2)->field.tqe_prev = (elm2); \\
+ _Q_INVALIDATE((elm)->field.tqe_prev); \\
+ _Q_INVALIDATE((elm)->field.tqe_next); \\
+} while (0)
+
+/*
+ * Circular queue definitions.
+ */
+#define CIRCLEQ_HEAD(name, type) \\
+struct name { \\
+ struct type *cqh_first; /* first element */ \\
+ struct type *cqh_last; /* last element */ \\
+}
+
+#define CIRCLEQ_HEAD_INITIALIZER(head) \\
+ { CIRCLEQ_END(&head), CIRCLEQ_END(&head) }
+
+#define CIRCLEQ_ENTRY(type) \\
+struct { \\
+ struct type *cqe_next; /* next element */ \\
+ struct type *cqe_prev; /* previous element */ \\
+}
+
+/*
+ * Circular queue access methods
+ */
+#define CIRCLEQ_FIRST(head) ((head)->cqh_first)
+#define CIRCLEQ_LAST(head) ((head)->cqh_last)
+#define CIRCLEQ_END(head) ((void *)(head))
+#define CIRCLEQ_NEXT(elm, field) ((elm)->field.cqe_next)
+#define CIRCLEQ_PREV(elm, field) ((elm)->field.cqe_prev)
+#define CIRCLEQ_EMPTY(head) \\
+ (CIRCLEQ_FIRST(head) == CIRCLEQ_END(head))
+
+#define CIRCLEQ_FOREACH(var, head, field) \\
+ for((var) = CIRCLEQ_FIRST(head); \\
+ (var) != CIRCLEQ_END(head); \\
+ (var) = CIRCLEQ_NEXT(var, field))
+
+#define CIRCLEQ_FOREACH_SAFE(var, head, field, tvar) \\
+ for ((var) = CIRCLEQ_FIRST(head); \\
+ (var) != CIRCLEQ_END(head) && \\
+ ((tvar) = CIRCLEQ_NEXT(var, field), 1); \\
+ (var) = (tvar))
+
+#define CIRCLEQ_FOREACH_REVERSE(var, head, field) \\
+ for((var) = CIRCLEQ_LAST(head); \\
+ (var) != CIRCLEQ_END(head); \\
+ (var) = CIRCLEQ_PREV(var, field))
+
+#define CIRCLEQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar) \\
+ for ((var) = CIRCLEQ_LAST(head, headname); \\
+ (var) != CIRCLEQ_END(head) && \\
+ ((tvar) = CIRCLEQ_PREV(var, headname, field), 1); \\
+ (var) = (tvar))
+
+/*
+ * Circular queue functions.
+ */
+#define CIRCLEQ_INIT(head) do { \\
+ (head)->cqh_first = CIRCLEQ_END(head); \\
+ (head)->cqh_last = CIRCLEQ_END(head); \\
+} while (0)
+
+#define CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) do { \\
+ (elm)->field.cqe_next = (listelm)->field.cqe_next; \\
+ (elm)->field.cqe_prev = (listelm); \\
+ if ((listelm)->field.cqe_next == CIRCLEQ_END(head)) \\
+ (head)->cqh_last = (elm); \\
+ else \\
+ (listelm)->field.cqe_next->field.cqe_prev = (elm); \\
+ (listelm)->field.cqe_next = (elm); \\
+} while (0)
+
+#define CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) do { \\
+ (elm)->field.cqe_next = (listelm); \\
+ (elm)->field.cqe_prev = (listelm)->field.cqe_prev; \\
+ if ((listelm)->field.cqe_prev == CIRCLEQ_END(head)) \\
+ (head)->cqh_first = (elm); \\
+ else \\
+ (listelm)->field.cqe_prev->field.cqe_next = (elm); \\
+ (listelm)->field.cqe_prev = (elm); \\
+} while (0)
+
+#define CIRCLEQ_INSERT_HEAD(head, elm, field) do { \\
+ (elm)->field.cqe_next = (head)->cqh_first; \\
+ (elm)->field.cqe_prev = CIRCLEQ_END(head); \\
+ if ((head)->cqh_last == CIRCLEQ_END(head)) \\
+ (head)->cqh_last = (elm); \\
+ else \\
+ (head)->cqh_first->field.cqe_prev = (elm); \\
+ (head)->cqh_first = (elm); \\
+} while (0)
+
+#define CIRCLEQ_INSERT_TAIL(head, elm, field) do { \\
+ (elm)->field.cqe_next = CIRCLEQ_END(head); \\
+ (elm)->field.cqe_prev = (head)->cqh_last; \\
+ if ((head)->cqh_first == CIRCLEQ_END(head)) \\
+ (head)->cqh_first = (elm); \\
+ else \\
+ (head)->cqh_last->field.cqe_next = (elm); \\
+ (head)->cqh_last = (elm); \\
+} while (0)
+
+#define CIRCLEQ_REMOVE(head, elm, field) do { \\
+ if ((elm)->field.cqe_next == CIRCLEQ_END(head)) \\
+ (head)->cqh_last = (elm)->field.cqe_prev; \\
+ else \\
+ (elm)->field.cqe_next->field.cqe_prev = \\
+ (elm)->field.cqe_prev; \\
+ if ((elm)->field.cqe_prev == CIRCLEQ_END(head)) \\
+ (head)->cqh_first = (elm)->field.cqe_next; \\
+ else \\
+ (elm)->field.cqe_prev->field.cqe_next = \\
+ (elm)->field.cqe_next; \\
+ _Q_INVALIDATE((elm)->field.cqe_prev); \\
+ _Q_INVALIDATE((elm)->field.cqe_next); \\
+} while (0)
+
+#define CIRCLEQ_REPLACE(head, elm, elm2, field) do { \\
+ if (((elm2)->field.cqe_next = (elm)->field.cqe_next) == \\
+ CIRCLEQ_END(head)) \\
+ (head).cqh_last = (elm2); \\
+ else \\
+ (elm2)->field.cqe_next->field.cqe_prev = (elm2); \\
+ if (((elm2)->field.cqe_prev = (elm)->field.cqe_prev) == \\
+ CIRCLEQ_END(head)) \\
+ (head).cqh_first = (elm2); \\
+ else \\
+ (elm2)->field.cqe_prev->field.cqe_next = (elm2); \\
+ _Q_INVALIDATE((elm)->field.cqe_prev); \\
+ _Q_INVALIDATE((elm)->field.cqe_next); \\
+} while (0)
+
+__HEREDOC__
+fi
+
+if [ ${HAVE_SYS_TREE} -eq 0 ]; then
+ cat << __HEREDOC__
+/*
+ * A compatible version of OpenBSD <sys/tree.h>.
+ */
+/*
+ * Copyright 2002 Niels Provos <provos@citi.umich.edu>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* OPENBSD ORIGINAL: sys/sys/tree.h */
+
+/*
+ * This file defines data structures for different types of trees:
+ * splay trees and red-black trees.
+ *
+ * A splay tree is a self-organizing data structure. Every operation
+ * on the tree causes a splay to happen. The splay moves the requested
+ * node to the root of the tree and partly rebalances it.
+ *
+ * This has the benefit that request locality causes faster lookups as
+ * the requested nodes move to the top of the tree. On the other hand,
+ * every lookup causes memory writes.
+ *
+ * The Balance Theorem bounds the total access time for m operations
+ * and n inserts on an initially empty tree as O((m + n)lg n). The
+ * amortized cost for a sequence of m accesses to a splay tree is O(lg n);
+ *
+ * A red-black tree is a binary search tree with the node color as an
+ * extra attribute. It fulfills a set of conditions:
+ * - every search path from the root to a leaf consists of the
+ * same number of black nodes,
+ * - each red node (except for the root) has a black parent,
+ * - each leaf node is black.
+ *
+ * Every operation on a red-black tree is bounded as O(lg n).
+ * The maximum height of a red-black tree is 2lg (n+1).
+ */
+
+#define SPLAY_HEAD(name, type) \\
+struct name { \\
+ struct type *sph_root; /* root of the tree */ \\
+}
+
+#define SPLAY_INITIALIZER(root) \\
+ { NULL }
+
+#define SPLAY_INIT(root) do { \\
+ (root)->sph_root = NULL; \\
+} while (0)
+
+#define SPLAY_ENTRY(type) \\
+struct { \\
+ struct type *spe_left; /* left element */ \\
+ struct type *spe_right; /* right element */ \\
+}
+
+#define SPLAY_LEFT(elm, field) (elm)->field.spe_left
+#define SPLAY_RIGHT(elm, field) (elm)->field.spe_right
+#define SPLAY_ROOT(head) (head)->sph_root
+#define SPLAY_EMPTY(head) (SPLAY_ROOT(head) == NULL)
+
+/* SPLAY_ROTATE_{LEFT,RIGHT} expect that tmp hold SPLAY_{RIGHT,LEFT} */
+#define SPLAY_ROTATE_RIGHT(head, tmp, field) do { \\
+ SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(tmp, field); \\
+ SPLAY_RIGHT(tmp, field) = (head)->sph_root; \\
+ (head)->sph_root = tmp; \\
+} while (0)
+
+#define SPLAY_ROTATE_LEFT(head, tmp, field) do { \\
+ SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(tmp, field); \\
+ SPLAY_LEFT(tmp, field) = (head)->sph_root; \\
+ (head)->sph_root = tmp; \\
+} while (0)
+
+#define SPLAY_LINKLEFT(head, tmp, field) do { \\
+ SPLAY_LEFT(tmp, field) = (head)->sph_root; \\
+ tmp = (head)->sph_root; \\
+ (head)->sph_root = SPLAY_LEFT((head)->sph_root, field); \\
+} while (0)
+
+#define SPLAY_LINKRIGHT(head, tmp, field) do { \\
+ SPLAY_RIGHT(tmp, field) = (head)->sph_root; \\
+ tmp = (head)->sph_root; \\
+ (head)->sph_root = SPLAY_RIGHT((head)->sph_root, field); \\
+} while (0)
+
+#define SPLAY_ASSEMBLE(head, node, left, right, field) do { \\
+ SPLAY_RIGHT(left, field) = SPLAY_LEFT((head)->sph_root, field); \\
+ SPLAY_LEFT(right, field) = SPLAY_RIGHT((head)->sph_root, field);\\
+ SPLAY_LEFT((head)->sph_root, field) = SPLAY_RIGHT(node, field); \\
+ SPLAY_RIGHT((head)->sph_root, field) = SPLAY_LEFT(node, field); \\
+} while (0)
+
+/* Generates prototypes and inline functions */
+
+#define SPLAY_PROTOTYPE(name, type, field, cmp) \\
+void name##_SPLAY(struct name *, struct type *); \\
+void name##_SPLAY_MINMAX(struct name *, int); \\
+struct type *name##_SPLAY_INSERT(struct name *, struct type *); \\
+struct type *name##_SPLAY_REMOVE(struct name *, struct type *); \\
+ \\
+/* Finds the node with the same key as elm */ \\
+static __inline struct type * \\
+name##_SPLAY_FIND(struct name *head, struct type *elm) \\
+{ \\
+ if (SPLAY_EMPTY(head)) \\
+ return(NULL); \\
+ name##_SPLAY(head, elm); \\
+ if ((cmp)(elm, (head)->sph_root) == 0) \\
+ return (head->sph_root); \\
+ return (NULL); \\
+} \\
+ \\
+static __inline struct type * \\
+name##_SPLAY_NEXT(struct name *head, struct type *elm) \\
+{ \\
+ name##_SPLAY(head, elm); \\
+ if (SPLAY_RIGHT(elm, field) != NULL) { \\
+ elm = SPLAY_RIGHT(elm, field); \\
+ while (SPLAY_LEFT(elm, field) != NULL) { \\
+ elm = SPLAY_LEFT(elm, field); \\
+ } \\
+ } else \\
+ elm = NULL; \\
+ return (elm); \\
+} \\
+ \\
+static __inline struct type * \\
+name##_SPLAY_MIN_MAX(struct name *head, int val) \\
+{ \\
+ name##_SPLAY_MINMAX(head, val); \\
+ return (SPLAY_ROOT(head)); \\
+}
+
+/* Main splay operation.
+ * Moves node close to the key of elm to top
+ */
+#define SPLAY_GENERATE(name, type, field, cmp) \\
+struct type * \\
+name##_SPLAY_INSERT(struct name *head, struct type *elm) \\
+{ \\
+ if (SPLAY_EMPTY(head)) { \\
+ SPLAY_LEFT(elm, field) = SPLAY_RIGHT(elm, field) = NULL; \\
+ } else { \\
+ int __comp; \\
+ name##_SPLAY(head, elm); \\
+ __comp = (cmp)(elm, (head)->sph_root); \\
+ if(__comp < 0) { \\
+ SPLAY_LEFT(elm, field) = SPLAY_LEFT((head)->sph_root, field);\\
+ SPLAY_RIGHT(elm, field) = (head)->sph_root; \\
+ SPLAY_LEFT((head)->sph_root, field) = NULL; \\
+ } else if (__comp > 0) { \\
+ SPLAY_RIGHT(elm, field) = SPLAY_RIGHT((head)->sph_root, field);\\
+ SPLAY_LEFT(elm, field) = (head)->sph_root; \\
+ SPLAY_RIGHT((head)->sph_root, field) = NULL; \\
+ } else \\
+ return ((head)->sph_root); \\
+ } \\
+ (head)->sph_root = (elm); \\
+ return (NULL); \\
+} \\
+ \\
+struct type * \\
+name##_SPLAY_REMOVE(struct name *head, struct type *elm) \\
+{ \\
+ struct type *__tmp; \\
+ if (SPLAY_EMPTY(head)) \\
+ return (NULL); \\
+ name##_SPLAY(head, elm); \\
+ if ((cmp)(elm, (head)->sph_root) == 0) { \\
+ if (SPLAY_LEFT((head)->sph_root, field) == NULL) { \\
+ (head)->sph_root = SPLAY_RIGHT((head)->sph_root, field);\\
+ } else { \\
+ __tmp = SPLAY_RIGHT((head)->sph_root, field); \\
+ (head)->sph_root = SPLAY_LEFT((head)->sph_root, field);\\
+ name##_SPLAY(head, elm); \\
+ SPLAY_RIGHT((head)->sph_root, field) = __tmp; \\
+ } \\
+ return (elm); \\
+ } \\
+ return (NULL); \\
+} \\
+ \\
+void \\
+name##_SPLAY(struct name *head, struct type *elm) \\
+{ \\
+ struct type __node, *__left, *__right, *__tmp; \\
+ int __comp; \\
+\\
+ SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL;\\
+ __left = __right = &__node; \\
+\\
+ while ((__comp = (cmp)(elm, (head)->sph_root))) { \\
+ if (__comp < 0) { \\
+ __tmp = SPLAY_LEFT((head)->sph_root, field); \\
+ if (__tmp == NULL) \\
+ break; \\
+ if ((cmp)(elm, __tmp) < 0){ \\
+ SPLAY_ROTATE_RIGHT(head, __tmp, field); \\
+ if (SPLAY_LEFT((head)->sph_root, field) == NULL)\\
+ break; \\
+ } \\
+ SPLAY_LINKLEFT(head, __right, field); \\
+ } else if (__comp > 0) { \\
+ __tmp = SPLAY_RIGHT((head)->sph_root, field); \\
+ if (__tmp == NULL) \\
+ break; \\
+ if ((cmp)(elm, __tmp) > 0){ \\
+ SPLAY_ROTATE_LEFT(head, __tmp, field); \\
+ if (SPLAY_RIGHT((head)->sph_root, field) == NULL)\\
+ break; \\
+ } \\
+ SPLAY_LINKRIGHT(head, __left, field); \\
+ } \\
+ } \\
+ SPLAY_ASSEMBLE(head, &__node, __left, __right, field); \\
+} \\
+ \\
+/* Splay with either the minimum or the maximum element \\
+ * Used to find minimum or maximum element in tree. \\
+ */ \\
+void name##_SPLAY_MINMAX(struct name *head, int __comp) \\
+{ \\
+ struct type __node, *__left, *__right, *__tmp; \\
+\\
+ SPLAY_LEFT(&__node, field) = SPLAY_RIGHT(&__node, field) = NULL;\\
+ __left = __right = &__node; \\
+\\
+ while (1) { \\
+ if (__comp < 0) { \\
+ __tmp = SPLAY_LEFT((head)->sph_root, field); \\
+ if (__tmp == NULL) \\
+ break; \\
+ if (__comp < 0){ \\
+ SPLAY_ROTATE_RIGHT(head, __tmp, field); \\
+ if (SPLAY_LEFT((head)->sph_root, field) == NULL)\\
+ break; \\
+ } \\
+ SPLAY_LINKLEFT(head, __right, field); \\
+ } else if (__comp > 0) { \\
+ __tmp = SPLAY_RIGHT((head)->sph_root, field); \\
+ if (__tmp == NULL) \\
+ break; \\
+ if (__comp > 0) { \\
+ SPLAY_ROTATE_LEFT(head, __tmp, field); \\
+ if (SPLAY_RIGHT((head)->sph_root, field) == NULL)\\
+ break; \\
+ } \\
+ SPLAY_LINKRIGHT(head, __left, field); \\
+ } \\
+ } \\
+ SPLAY_ASSEMBLE(head, &__node, __left, __right, field); \\
+}
+
+#define SPLAY_NEGINF -1
+#define SPLAY_INF 1
+
+#define SPLAY_INSERT(name, x, y) name##_SPLAY_INSERT(x, y)
+#define SPLAY_REMOVE(name, x, y) name##_SPLAY_REMOVE(x, y)
+#define SPLAY_FIND(name, x, y) name##_SPLAY_FIND(x, y)
+#define SPLAY_NEXT(name, x, y) name##_SPLAY_NEXT(x, y)
+#define SPLAY_MIN(name, x) (SPLAY_EMPTY(x) ? NULL \\
+ : name##_SPLAY_MIN_MAX(x, SPLAY_NEGINF))
+#define SPLAY_MAX(name, x) (SPLAY_EMPTY(x) ? NULL \\
+ : name##_SPLAY_MIN_MAX(x, SPLAY_INF))
+
+#define SPLAY_FOREACH(x, name, head) \\
+ for ((x) = SPLAY_MIN(name, head); \\
+ (x) != NULL; \\
+ (x) = SPLAY_NEXT(name, head, x))
+
+/* Macros that define a red-black tree */
+#define RB_HEAD(name, type) \\
+struct name { \\
+ struct type *rbh_root; /* root of the tree */ \\
+}
+
+#define RB_INITIALIZER(root) \\
+ { NULL }
+
+#define RB_INIT(root) do { \\
+ (root)->rbh_root = NULL; \\
+} while (0)
+
+#define RB_BLACK 0
+#define RB_RED 1
+#define RB_ENTRY(type) \\
+struct { \\
+ struct type *rbe_left; /* left element */ \\
+ struct type *rbe_right; /* right element */ \\
+ struct type *rbe_parent; /* parent element */ \\
+ int rbe_color; /* node color */ \\
+}
+
+#define RB_LEFT(elm, field) (elm)->field.rbe_left
+#define RB_RIGHT(elm, field) (elm)->field.rbe_right
+#define RB_PARENT(elm, field) (elm)->field.rbe_parent
+#define RB_COLOR(elm, field) (elm)->field.rbe_color
+#define RB_ROOT(head) (head)->rbh_root
+#define RB_EMPTY(head) (RB_ROOT(head) == NULL)
+
+#define RB_SET(elm, parent, field) do { \\
+ RB_PARENT(elm, field) = parent; \\
+ RB_LEFT(elm, field) = RB_RIGHT(elm, field) = NULL; \\
+ RB_COLOR(elm, field) = RB_RED; \\
+} while (0)
+
+#define RB_SET_BLACKRED(black, red, field) do { \\
+ RB_COLOR(black, field) = RB_BLACK; \\
+ RB_COLOR(red, field) = RB_RED; \\
+} while (0)
+
+#ifndef RB_AUGMENT
+#define RB_AUGMENT(x) do {} while (0)
+#endif
+
+#define RB_ROTATE_LEFT(head, elm, tmp, field) do { \\
+ (tmp) = RB_RIGHT(elm, field); \\
+ if ((RB_RIGHT(elm, field) = RB_LEFT(tmp, field))) { \\
+ RB_PARENT(RB_LEFT(tmp, field), field) = (elm); \\
+ } \\
+ RB_AUGMENT(elm); \\
+ if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field))) { \\
+ if ((elm) == RB_LEFT(RB_PARENT(elm, field), field)) \\
+ RB_LEFT(RB_PARENT(elm, field), field) = (tmp); \\
+ else \\
+ RB_RIGHT(RB_PARENT(elm, field), field) = (tmp); \\
+ } else \\
+ (head)->rbh_root = (tmp); \\
+ RB_LEFT(tmp, field) = (elm); \\
+ RB_PARENT(elm, field) = (tmp); \\
+ RB_AUGMENT(tmp); \\
+ if ((RB_PARENT(tmp, field))) \\
+ RB_AUGMENT(RB_PARENT(tmp, field)); \\
+} while (0)
+
+#define RB_ROTATE_RIGHT(head, elm, tmp, field) do { \\
+ (tmp) = RB_LEFT(elm, field); \\
+ if ((RB_LEFT(elm, field) = RB_RIGHT(tmp, field))) { \\
+ RB_PARENT(RB_RIGHT(tmp, field), field) = (elm); \\
+ } \\
+ RB_AUGMENT(elm); \\
+ if ((RB_PARENT(tmp, field) = RB_PARENT(elm, field))) { \\
+ if ((elm) == RB_LEFT(RB_PARENT(elm, field), field)) \\
+ RB_LEFT(RB_PARENT(elm, field), field) = (tmp); \\
+ else \\
+ RB_RIGHT(RB_PARENT(elm, field), field) = (tmp); \\
+ } else \\
+ (head)->rbh_root = (tmp); \\
+ RB_RIGHT(tmp, field) = (elm); \\
+ RB_PARENT(elm, field) = (tmp); \\
+ RB_AUGMENT(tmp); \\
+ if ((RB_PARENT(tmp, field))) \\
+ RB_AUGMENT(RB_PARENT(tmp, field)); \\
+} while (0)
+
+/* Generates prototypes and inline functions */
+#define RB_PROTOTYPE(name, type, field, cmp) \\
+ RB_PROTOTYPE_INTERNAL(name, type, field, cmp,)
+#define RB_PROTOTYPE_STATIC(name, type, field, cmp) \\
+ RB_PROTOTYPE_INTERNAL(name, type, field, cmp, __attribute__((__unused__)) static)
+#define RB_PROTOTYPE_INTERNAL(name, type, field, cmp, attr) \\
+attr void name##_RB_INSERT_COLOR(struct name *, struct type *); \\
+attr void name##_RB_REMOVE_COLOR(struct name *, struct type *, struct type *);\\
+attr struct type *name##_RB_REMOVE(struct name *, struct type *); \\
+attr struct type *name##_RB_INSERT(struct name *, struct type *); \\
+attr struct type *name##_RB_FIND(struct name *, struct type *); \\
+attr struct type *name##_RB_NFIND(struct name *, struct type *); \\
+attr struct type *name##_RB_NEXT(struct type *); \\
+attr struct type *name##_RB_PREV(struct type *); \\
+attr struct type *name##_RB_MINMAX(struct name *, int); \\
+ \\
+
+/* Main rb operation.
+ * Moves node close to the key of elm to top
+ */
+#define RB_GENERATE(name, type, field, cmp) \\
+ RB_GENERATE_INTERNAL(name, type, field, cmp,)
+#define RB_GENERATE_STATIC(name, type, field, cmp) \\
+ RB_GENERATE_INTERNAL(name, type, field, cmp, __attribute__((__unused__)) static)
+#define RB_GENERATE_INTERNAL(name, type, field, cmp, attr) \\
+attr void \\
+name##_RB_INSERT_COLOR(struct name *head, struct type *elm) \\
+{ \\
+ struct type *parent, *gparent, *tmp; \\
+ while ((parent = RB_PARENT(elm, field)) && \\
+ RB_COLOR(parent, field) == RB_RED) { \\
+ gparent = RB_PARENT(parent, field); \\
+ if (parent == RB_LEFT(gparent, field)) { \\
+ tmp = RB_RIGHT(gparent, field); \\
+ if (tmp && RB_COLOR(tmp, field) == RB_RED) { \\
+ RB_COLOR(tmp, field) = RB_BLACK; \\
+ RB_SET_BLACKRED(parent, gparent, field);\\
+ elm = gparent; \\
+ continue; \\
+ } \\
+ if (RB_RIGHT(parent, field) == elm) { \\
+ RB_ROTATE_LEFT(head, parent, tmp, field);\\
+ tmp = parent; \\
+ parent = elm; \\
+ elm = tmp; \\
+ } \\
+ RB_SET_BLACKRED(parent, gparent, field); \\
+ RB_ROTATE_RIGHT(head, gparent, tmp, field); \\
+ } else { \\
+ tmp = RB_LEFT(gparent, field); \\
+ if (tmp && RB_COLOR(tmp, field) == RB_RED) { \\
+ RB_COLOR(tmp, field) = RB_BLACK; \\
+ RB_SET_BLACKRED(parent, gparent, field);\\
+ elm = gparent; \\
+ continue; \\
+ } \\
+ if (RB_LEFT(parent, field) == elm) { \\
+ RB_ROTATE_RIGHT(head, parent, tmp, field);\\
+ tmp = parent; \\
+ parent = elm; \\
+ elm = tmp; \\
+ } \\
+ RB_SET_BLACKRED(parent, gparent, field); \\
+ RB_ROTATE_LEFT(head, gparent, tmp, field); \\
+ } \\
+ } \\
+ RB_COLOR(head->rbh_root, field) = RB_BLACK; \\
+} \\
+ \\
+attr void \\
+name##_RB_REMOVE_COLOR(struct name *head, struct type *parent, struct type *elm) \\
+{ \\
+ struct type *tmp; \\
+ while ((elm == NULL || RB_COLOR(elm, field) == RB_BLACK) && \\
+ elm != RB_ROOT(head)) { \\
+ if (RB_LEFT(parent, field) == elm) { \\
+ tmp = RB_RIGHT(parent, field); \\
+ if (RB_COLOR(tmp, field) == RB_RED) { \\
+ RB_SET_BLACKRED(tmp, parent, field); \\
+ RB_ROTATE_LEFT(head, parent, tmp, field);\\
+ tmp = RB_RIGHT(parent, field); \\
+ } \\
+ if ((RB_LEFT(tmp, field) == NULL || \\
+ RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) &&\\
+ (RB_RIGHT(tmp, field) == NULL || \\
+ RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK)) {\\
+ RB_COLOR(tmp, field) = RB_RED; \\
+ elm = parent; \\
+ parent = RB_PARENT(elm, field); \\
+ } else { \\
+ if (RB_RIGHT(tmp, field) == NULL || \\
+ RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK) {\\
+ struct type *oleft; \\
+ if ((oleft = RB_LEFT(tmp, field)))\\
+ RB_COLOR(oleft, field) = RB_BLACK;\\
+ RB_COLOR(tmp, field) = RB_RED; \\
+ RB_ROTATE_RIGHT(head, tmp, oleft, field);\\
+ tmp = RB_RIGHT(parent, field); \\
+ } \\
+ RB_COLOR(tmp, field) = RB_COLOR(parent, field);\\
+ RB_COLOR(parent, field) = RB_BLACK; \\
+ if (RB_RIGHT(tmp, field)) \\
+ RB_COLOR(RB_RIGHT(tmp, field), field) = RB_BLACK;\\
+ RB_ROTATE_LEFT(head, parent, tmp, field);\\
+ elm = RB_ROOT(head); \\
+ break; \\
+ } \\
+ } else { \\
+ tmp = RB_LEFT(parent, field); \\
+ if (RB_COLOR(tmp, field) == RB_RED) { \\
+ RB_SET_BLACKRED(tmp, parent, field); \\
+ RB_ROTATE_RIGHT(head, parent, tmp, field);\\
+ tmp = RB_LEFT(parent, field); \\
+ } \\
+ if ((RB_LEFT(tmp, field) == NULL || \\
+ RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) &&\\
+ (RB_RIGHT(tmp, field) == NULL || \\
+ RB_COLOR(RB_RIGHT(tmp, field), field) == RB_BLACK)) {\\
+ RB_COLOR(tmp, field) = RB_RED; \\
+ elm = parent; \\
+ parent = RB_PARENT(elm, field); \\
+ } else { \\
+ if (RB_LEFT(tmp, field) == NULL || \\
+ RB_COLOR(RB_LEFT(tmp, field), field) == RB_BLACK) {\\
+ struct type *oright; \\
+ if ((oright = RB_RIGHT(tmp, field)))\\
+ RB_COLOR(oright, field) = RB_BLACK;\\
+ RB_COLOR(tmp, field) = RB_RED; \\
+ RB_ROTATE_LEFT(head, tmp, oright, field);\\
+ tmp = RB_LEFT(parent, field); \\
+ } \\
+ RB_COLOR(tmp, field) = RB_COLOR(parent, field);\\
+ RB_COLOR(parent, field) = RB_BLACK; \\
+ if (RB_LEFT(tmp, field)) \\
+ RB_COLOR(RB_LEFT(tmp, field), field) = RB_BLACK;\\
+ RB_ROTATE_RIGHT(head, parent, tmp, field);\\
+ elm = RB_ROOT(head); \\
+ break; \\
+ } \\
+ } \\
+ } \\
+ if (elm) \\
+ RB_COLOR(elm, field) = RB_BLACK; \\
+} \\
+ \\
+attr struct type * \\
+name##_RB_REMOVE(struct name *head, struct type *elm) \\
+{ \\
+ struct type *child, *parent, *old = elm; \\
+ int color; \\
+ if (RB_LEFT(elm, field) == NULL) \\
+ child = RB_RIGHT(elm, field); \\
+ else if (RB_RIGHT(elm, field) == NULL) \\
+ child = RB_LEFT(elm, field); \\
+ else { \\
+ struct type *left; \\
+ elm = RB_RIGHT(elm, field); \\
+ while ((left = RB_LEFT(elm, field))) \\
+ elm = left; \\
+ child = RB_RIGHT(elm, field); \\
+ parent = RB_PARENT(elm, field); \\
+ color = RB_COLOR(elm, field); \\
+ if (child) \\
+ RB_PARENT(child, field) = parent; \\
+ if (parent) { \\
+ if (RB_LEFT(parent, field) == elm) \\
+ RB_LEFT(parent, field) = child; \\
+ else \\
+ RB_RIGHT(parent, field) = child; \\
+ RB_AUGMENT(parent); \\
+ } else \\
+ RB_ROOT(head) = child; \\
+ if (RB_PARENT(elm, field) == old) \\
+ parent = elm; \\
+ (elm)->field = (old)->field; \\
+ if (RB_PARENT(old, field)) { \\
+ if (RB_LEFT(RB_PARENT(old, field), field) == old)\\
+ RB_LEFT(RB_PARENT(old, field), field) = elm;\\
+ else \\
+ RB_RIGHT(RB_PARENT(old, field), field) = elm;\\
+ RB_AUGMENT(RB_PARENT(old, field)); \\
+ } else \\
+ RB_ROOT(head) = elm; \\
+ RB_PARENT(RB_LEFT(old, field), field) = elm; \\
+ if (RB_RIGHT(old, field)) \\
+ RB_PARENT(RB_RIGHT(old, field), field) = elm; \\
+ if (parent) { \\
+ left = parent; \\
+ do { \\
+ RB_AUGMENT(left); \\
+ } while ((left = RB_PARENT(left, field))); \\
+ } \\
+ goto color; \\
+ } \\
+ parent = RB_PARENT(elm, field); \\
+ color = RB_COLOR(elm, field); \\
+ if (child) \\
+ RB_PARENT(child, field) = parent; \\
+ if (parent) { \\
+ if (RB_LEFT(parent, field) == elm) \\
+ RB_LEFT(parent, field) = child; \\
+ else \\
+ RB_RIGHT(parent, field) = child; \\
+ RB_AUGMENT(parent); \\
+ } else \\
+ RB_ROOT(head) = child; \\
+color: \\
+ if (color == RB_BLACK) \\
+ name##_RB_REMOVE_COLOR(head, parent, child); \\
+ return (old); \\
+} \\
+ \\
+/* Inserts a node into the RB tree */ \\
+attr struct type * \\
+name##_RB_INSERT(struct name *head, struct type *elm) \\
+{ \\
+ struct type *tmp; \\
+ struct type *parent = NULL; \\
+ int comp = 0; \\
+ tmp = RB_ROOT(head); \\
+ while (tmp) { \\
+ parent = tmp; \\
+ comp = (cmp)(elm, parent); \\
+ if (comp < 0) \\
+ tmp = RB_LEFT(tmp, field); \\
+ else if (comp > 0) \\
+ tmp = RB_RIGHT(tmp, field); \\
+ else \\
+ return (tmp); \\
+ } \\
+ RB_SET(elm, parent, field); \\
+ if (parent != NULL) { \\
+ if (comp < 0) \\
+ RB_LEFT(parent, field) = elm; \\
+ else \\
+ RB_RIGHT(parent, field) = elm; \\
+ RB_AUGMENT(parent); \\
+ } else \\
+ RB_ROOT(head) = elm; \\
+ name##_RB_INSERT_COLOR(head, elm); \\
+ return (NULL); \\
+} \\
+ \\
+/* Finds the node with the same key as elm */ \\
+attr struct type * \\
+name##_RB_FIND(struct name *head, struct type *elm) \\
+{ \\
+ struct type *tmp = RB_ROOT(head); \\
+ int comp; \\
+ while (tmp) { \\
+ comp = cmp(elm, tmp); \\
+ if (comp < 0) \\
+ tmp = RB_LEFT(tmp, field); \\
+ else if (comp > 0) \\
+ tmp = RB_RIGHT(tmp, field); \\
+ else \\
+ return (tmp); \\
+ } \\
+ return (NULL); \\
+} \\
+ \\
+/* Finds the first node greater than or equal to the search key */ \\
+attr struct type * \\
+name##_RB_NFIND(struct name *head, struct type *elm) \\
+{ \\
+ struct type *tmp = RB_ROOT(head); \\
+ struct type *res = NULL; \\
+ int comp; \\
+ while (tmp) { \\
+ comp = cmp(elm, tmp); \\
+ if (comp < 0) { \\
+ res = tmp; \\
+ tmp = RB_LEFT(tmp, field); \\
+ } \\
+ else if (comp > 0) \\
+ tmp = RB_RIGHT(tmp, field); \\
+ else \\
+ return (tmp); \\
+ } \\
+ return (res); \\
+} \\
+ \\
+/* ARGSUSED */ \\
+attr struct type * \\
+name##_RB_NEXT(struct type *elm) \\
+{ \\
+ if (RB_RIGHT(elm, field)) { \\
+ elm = RB_RIGHT(elm, field); \\
+ while (RB_LEFT(elm, field)) \\
+ elm = RB_LEFT(elm, field); \\
+ } else { \\
+ if (RB_PARENT(elm, field) && \\
+ (elm == RB_LEFT(RB_PARENT(elm, field), field))) \\
+ elm = RB_PARENT(elm, field); \\
+ else { \\
+ while (RB_PARENT(elm, field) && \\
+ (elm == RB_RIGHT(RB_PARENT(elm, field), field)))\\
+ elm = RB_PARENT(elm, field); \\
+ elm = RB_PARENT(elm, field); \\
+ } \\
+ } \\
+ return (elm); \\
+} \\
+ \\
+/* ARGSUSED */ \\
+attr struct type * \\
+name##_RB_PREV(struct type *elm) \\
+{ \\
+ if (RB_LEFT(elm, field)) { \\
+ elm = RB_LEFT(elm, field); \\
+ while (RB_RIGHT(elm, field)) \\
+ elm = RB_RIGHT(elm, field); \\
+ } else { \\
+ if (RB_PARENT(elm, field) && \\
+ (elm == RB_RIGHT(RB_PARENT(elm, field), field))) \\
+ elm = RB_PARENT(elm, field); \\
+ else { \\
+ while (RB_PARENT(elm, field) && \\
+ (elm == RB_LEFT(RB_PARENT(elm, field), field)))\\
+ elm = RB_PARENT(elm, field); \\
+ elm = RB_PARENT(elm, field); \\
+ } \\
+ } \\
+ return (elm); \\
+} \\
+ \\
+attr struct type * \\
+name##_RB_MINMAX(struct name *head, int val) \\
+{ \\
+ struct type *tmp = RB_ROOT(head); \\
+ struct type *parent = NULL; \\
+ while (tmp) { \\
+ parent = tmp; \\
+ if (val < 0) \\
+ tmp = RB_LEFT(tmp, field); \\
+ else \\
+ tmp = RB_RIGHT(tmp, field); \\
+ } \\
+ return (parent); \\
+}
+
+#define RB_NEGINF -1
+#define RB_INF 1
+
+#define RB_INSERT(name, x, y) name##_RB_INSERT(x, y)
+#define RB_REMOVE(name, x, y) name##_RB_REMOVE(x, y)
+#define RB_FIND(name, x, y) name##_RB_FIND(x, y)
+#define RB_NFIND(name, x, y) name##_RB_NFIND(x, y)
+#define RB_NEXT(name, x, y) name##_RB_NEXT(y)
+#define RB_PREV(name, x, y) name##_RB_PREV(y)
+#define RB_MIN(name, x) name##_RB_MINMAX(x, RB_NEGINF)
+#define RB_MAX(name, x) name##_RB_MINMAX(x, RB_INF)
+
+#define RB_FOREACH(x, name, head) \\
+ for ((x) = RB_MIN(name, head); \\
+ (x) != NULL; \\
+ (x) = name##_RB_NEXT(x))
+
+#define RB_FOREACH_SAFE(x, name, head, y) \\
+ for ((x) = RB_MIN(name, head); \\
+ ((x) != NULL) && ((y) = name##_RB_NEXT(x), 1); \\
+ (x) = (y))
+
+#define RB_FOREACH_REVERSE(x, name, head) \\
+ for ((x) = RB_MAX(name, head); \\
+ (x) != NULL; \\
+ (x) = name##_RB_PREV(x))
+
+#define RB_FOREACH_REVERSE_SAFE(x, name, head, y) \\
+ for ((x) = RB_MAX(name, head); \\
+ ((x) != NULL) && ((y) = name##_RB_PREV(x), 1); \\
+ (x) = (y))
+
+__HEREDOC__
+fi
+
+cat << __HEREDOC__
+#endif /*!OCONFIGURE_CONFIG_H*/
+__HEREDOC__
+
+if [ ${HAVE_FTS} -eq 0 ]; then
+ cat << __HEREDOC__
+/*
+ * Compatibility for fts(3) functions.
+ */
+typedef struct {
+ struct _ftsent *fts_cur; /* current node */
+ struct _ftsent *fts_child; /* linked list of children */
+ struct _ftsent **fts_array; /* sort array */
+ dev_t fts_dev; /* starting device # */
+ char *fts_path; /* path for this descent */
+ int fts_rfd; /* fd for root */
+ size_t fts_pathlen; /* sizeof(path) */
+ int fts_nitems; /* elements in the sort array */
+ int (*fts_compar)(const struct _ftsent **, const struct _ftsent **); /* compare function */
+#define FTS_COMFOLLOW 0x0001 /* follow command line symlinks */
+#define FTS_LOGICAL 0x0002 /* logical walk */
+#define FTS_NOCHDIR 0x0004 /* don't change directories */
+#define FTS_NOSTAT 0x0008 /* don't get stat info */
+#define FTS_PHYSICAL 0x0010 /* physical walk */
+#define FTS_SEEDOT 0x0020 /* return dot and dot-dot */
+#define FTS_XDEV 0x0040 /* don't cross devices */
+#define FTS_OPTIONMASK 0x00ff /* valid user option mask */
+#define FTS_NAMEONLY 0x1000 /* (private) child names only */
+#define FTS_STOP 0x2000 /* (private) unrecoverable error */
+ int fts_options; /* fts_open options, global flags */
+} FTS;
+
+typedef struct _ftsent {
+ struct _ftsent *fts_cycle; /* cycle node */
+ struct _ftsent *fts_parent; /* parent directory */
+ struct _ftsent *fts_link; /* next file in directory */
+ long fts_number; /* local numeric value */
+ void *fts_pointer; /* local address value */
+ char *fts_accpath; /* access path */
+ char *fts_path; /* root path */
+ int fts_errno; /* errno for this node */
+ int fts_symfd; /* fd for symlink */
+ size_t fts_pathlen; /* strlen(fts_path) */
+ size_t fts_namelen; /* strlen(fts_name) */
+ ino_t fts_ino; /* inode */
+ dev_t fts_dev; /* device */
+ nlink_t fts_nlink; /* link count */
+#define FTS_ROOTPARENTLEVEL -1
+#define FTS_ROOTLEVEL 0
+#define FTS_MAXLEVEL 0x7fffffff
+ int fts_level; /* depth (-1 to N) */
+#define FTS_D 1 /* preorder directory */
+#define FTS_DC 2 /* directory that causes cycles */
+#define FTS_DEFAULT 3 /* none of the above */
+#define FTS_DNR 4 /* unreadable directory */
+#define FTS_DOT 5 /* dot or dot-dot */
+#define FTS_DP 6 /* postorder directory */
+#define FTS_ERR 7 /* error; errno is set */
+#define FTS_F 8 /* regular file */
+#define FTS_INIT 9 /* initialized only */
+#define FTS_NS 10 /* stat(2) failed */
+#define FTS_NSOK 11 /* no stat(2) requested */
+#define FTS_SL 12 /* symbolic link */
+#define FTS_SLNONE 13 /* symbolic link without target */
+ unsigned short fts_info; /* user flags for FTSENT structure */
+#define FTS_DONTCHDIR 0x01 /* don't chdir .. to the parent */
+#define FTS_SYMFOLLOW 0x02 /* followed a symlink to get here */
+ unsigned short fts_flags; /* private flags for FTSENT structure */
+#define FTS_AGAIN 1 /* read node again */
+#define FTS_FOLLOW 2 /* follow symbolic link */
+#define FTS_NOINSTR 3 /* no instructions */
+#define FTS_SKIP 4 /* discard node */
+ unsigned short fts_instr; /* fts_set() instructions */
+ unsigned short fts_spare; /* unused */
+ struct stat *fts_statp; /* stat(2) information */
+ char fts_name[1]; /* file name */
+} FTSENT;
+
+FTSENT *fts_children(FTS *, int);
+int fts_close(FTS *);
+FTS *fts_open(char * const *, int,
+ int (*)(const FTSENT **, const FTSENT **));
+FTSENT *fts_read(FTS *);
+int fts_set(FTS *, FTSENT *, int);
+
+__HEREDOC__
+fi
+
+echo "config.h: written" 1>&2
+echo "config.h: written" 1>&3
+
+#----------------------------------------------------------------------
+# Now we go to generate our Makefile.configure.
+# This file is simply a bunch of Makefile variables.
+# They'll work in both GNUmakefile and BSDmakefile.
+# You MIGHT want to change this.
+#----------------------------------------------------------------------
+
+exec > Makefile.configure
+
+[ -z "${BINDIR}" ] && BINDIR="${PREFIX}/bin"
+[ -z "${SBINDIR}" ] && SBINDIR="${PREFIX}/sbin"
+[ -z "${INCLUDEDIR}" ] && INCLUDEDIR="${PREFIX}/include"
+[ -z "${LIBDIR}" ] && LIBDIR="${PREFIX}/lib"
+[ -z "${MANDIR}" ] && MANDIR="${PREFIX}/man"
+[ -z "${SHAREDIR}" ] && SHAREDIR="${PREFIX}/share"
+
+[ -z "${INSTALL_PROGRAM}" ] && INSTALL_PROGRAM="${INSTALL} -m 0555"
+[ -z "${INSTALL_LIB}" ] && INSTALL_LIB="${INSTALL} -m 0444"
+[ -z "${INSTALL_MAN}" ] && INSTALL_MAN="${INSTALL} -m 0444"
+[ -z "${INSTALL_DATA}" ] && INSTALL_DATA="${INSTALL} -m 0444"
+
+cat << __HEREDOC__
+CC = ${CC}
+CFLAGS = ${CFLAGS}
+CPPFLAGS = ${CPPFLAGS}
+LDADD = ${LDADD}
+LDADD_B64_NTOP = ${LDADD_B64_NTOP}
+LDADD_CRYPT = ${LDADD_CRYPT}
+LDADD_LIB_SOCKET = ${LDADD_LIB_SOCKET}
+LDADD_MD5 = ${LDADD_MD5}
+LDADD_STATIC = ${LDADD_STATIC}
+LDFLAGS = ${LDFLAGS}
+STATIC = ${STATIC}
+PREFIX = ${PREFIX}
+BINDIR = ${BINDIR}
+SHAREDIR = ${SHAREDIR}
+SBINDIR = ${SBINDIR}
+INCLUDEDIR = ${INCLUDEDIR}
+LIBDIR = ${LIBDIR}
+MANDIR = ${MANDIR}
+INSTALL = ${INSTALL}
+INSTALL_PROGRAM = ${INSTALL_PROGRAM}
+INSTALL_LIB = ${INSTALL_LIB}
+INSTALL_MAN = ${INSTALL_MAN}
+INSTALL_DATA = ${INSTALL_DATA}
+__HEREDOC__
+
+echo "Makefile.configure: written" 1>&2
+echo "Makefile.configure: written" 1>&3
+
+exit 0
diff --git a/tests.c b/tests.c
@@ -0,0 +1,675 @@
+#if TEST___PROGNAME
+int
+main(void)
+{
+ extern char *__progname;
+
+ return !__progname;
+}
+#endif /* TEST___PROGNAME */
+#if TEST_ARC4RANDOM
+#include <stdlib.h>
+
+int
+main(void)
+{
+ return (arc4random() + 1) ? 0 : 1;
+}
+#endif /* TEST_ARC4RANDOM */
+#if TEST_B64_NTOP
+#include <netinet/in.h>
+#include <resolv.h>
+
+int
+main(void)
+{
+ const char *src = "hello world";
+ char output[1024];
+
+ return b64_ntop((const unsigned char *)src, 11, output, sizeof(output)) > 0 ? 0 : 1;
+}
+#endif /* TEST_B64_NTOP */
+#if TEST_CAPSICUM
+#include <sys/capsicum.h>
+
+int
+main(void)
+{
+ cap_enter();
+ return(0);
+}
+#endif /* TEST_CAPSICUM */
+#if TEST_CRYPT
+#if defined(__linux__)
+# define _GNU_SOURCE /* old glibc */
+# define _DEFAULT_SOURCE /* new glibc */
+#endif
+#if defined(__sun)
+# ifndef _XOPEN_SOURCE /* SunOS already defines */
+# define _XOPEN_SOURCE /* XPGx */
+# endif
+# define _XOPEN_SOURCE_EXTENDED 1 /* XPG4v2 */
+# ifndef __EXTENSIONS__ /* SunOS already defines */
+# define __EXTENSIONS__ /* reallocarray, etc. */
+# endif
+#endif
+#include <unistd.h>
+
+int main(void)
+{
+ char *v;
+
+ v = crypt("this_is_a_key", "123455");
+ return v == NULL;
+}
+#endif /* TEST_CRYPT */
+#if TEST_ENDIAN_H
+#ifdef __linux__
+# define _DEFAULT_SOURCE
+#endif
+#include <endian.h>
+
+int
+main(void)
+{
+ return !htole32(23);
+}
+#endif /* TEST_ENDIAN_H */
+#if TEST_ERR
+/*
+ * Copyright (c) 2015 Ingo Schwarze <schwarze@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <err.h>
+
+int
+main(void)
+{
+ warnx("%d. warnx", 1);
+ warn("%d. warn", 2);
+ err(0, "%d. err", 3);
+ /* NOTREACHED */
+ return 1;
+}
+#endif /* TEST_ERR */
+#if TEST_EXPLICIT_BZERO
+#include <string.h>
+
+int
+main(void)
+{
+ char foo[10];
+
+ explicit_bzero(foo, sizeof(foo));
+ return(0);
+}
+#endif /* TEST_EXPLICIT_BZERO */
+#if TEST_FTS
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fts.h>
+
+int
+main(void)
+{
+ const char *argv[2];
+ FTS *ftsp;
+ FTSENT *entry;
+
+ argv[0] = ".";
+ argv[1] = (char *)NULL;
+
+ ftsp = fts_open((char * const *)argv,
+ FTS_PHYSICAL | FTS_NOCHDIR, NULL);
+
+ if (ftsp == NULL)
+ return 1;
+
+ entry = fts_read(ftsp);
+
+ if (entry == NULL)
+ return 1;
+
+ if (fts_set(ftsp, entry, FTS_SKIP) != 0)
+ return 1;
+
+ if (fts_close(ftsp) != 0)
+ return 1;
+
+ return 0;
+}
+#endif /* TEST_FTS */
+#if TEST_GETEXECNAME
+#include <stdlib.h>
+
+int
+main(void)
+{
+ const char * progname;
+
+ progname = getexecname();
+ return progname == NULL;
+}
+#endif /* TEST_GETEXECNAME */
+#if TEST_GETPROGNAME
+#include <stdlib.h>
+
+int
+main(void)
+{
+ const char * progname;
+
+ progname = getprogname();
+ return progname == NULL;
+}
+#endif /* TEST_GETPROGNAME */
+#if TEST_INFTIM
+/*
+ * Linux doesn't (always?) have this.
+ */
+
+#include <poll.h>
+#include <stdio.h>
+
+int
+main(void)
+{
+ printf("INFTIM is defined to be %ld\n", (long)INFTIM);
+ return 0;
+}
+#endif /* TEST_INFTIM */
+#if TEST_LIB_SOCKET
+#include <sys/socket.h>
+
+int
+main(void)
+{
+ int fds[2], c;
+
+ c = socketpair(AF_UNIX, SOCK_STREAM, 0, fds);
+ return c == -1;
+}
+#endif /* TEST_LIB_SOCKET */
+#if TEST_MD5
+#include <sys/types.h>
+#include <md5.h>
+
+int main(void)
+{
+ MD5_CTX ctx;
+ char result[MD5_DIGEST_STRING_LENGTH];
+
+ MD5Init(&ctx);
+ MD5Update(&ctx, (const unsigned char *)"abcd", 4);
+ MD5End(&ctx, result);
+
+ return 0;
+}
+#endif /* TEST_MD5 */
+#if TEST_MEMMEM
+#define _GNU_SOURCE
+#include <string.h>
+
+int
+main(void)
+{
+ char *a = memmem("hello, world", strlen("hello, world"), "world", strlen("world"));
+ return(NULL == a);
+}
+#endif /* TEST_MEMMEM */
+#if TEST_MEMRCHR
+#if defined(__linux__) || defined(__MINT__)
+#define _GNU_SOURCE /* See test-*.c what needs this. */
+#endif
+#include <string.h>
+
+int
+main(void)
+{
+ const char *buf = "abcdef";
+ void *res;
+
+ res = memrchr(buf, 'a', strlen(buf));
+ return(NULL == res ? 1 : 0);
+}
+#endif /* TEST_MEMRCHR */
+#if TEST_MEMSET_S
+#include <string.h>
+
+int main(void)
+{
+ char buf[10];
+ memset_s(buf, 0, 'c', sizeof(buf));
+ return 0;
+}
+#endif /* TEST_MEMSET_S */
+#if TEST_MKFIFOAT
+#include <sys/stat.h>
+#include <fcntl.h>
+
+int main(void) {
+ mkfifoat(AT_FDCWD, "this/path/should/not/exist", 0600);
+ return 0;
+}
+#endif /* TEST_MKFIFOAT */
+#if TEST_MKNODAT
+#include <sys/stat.h>
+#include <fcntl.h>
+
+int main(void) {
+ mknodat(AT_FDCWD, "this/path/should/not/exist", S_IFIFO | 0600, 0);
+ return 0;
+}
+#endif /* TEST_MKNODAT */
+#if TEST_OSBYTEORDER_H
+#include <libkern/OSByteOrder.h>
+
+int
+main(void)
+{
+ return !OSSwapHostToLittleInt32(23);
+}
+#endif /* TEST_OSBYTEORDER_H */
+#if TEST_PATH_MAX
+/*
+ * POSIX allows PATH_MAX to not be defined, see
+ * http://pubs.opengroup.org/onlinepubs/9699919799/functions/sysconf.html;
+ * the GNU Hurd is an example of a system not having it.
+ *
+ * Arguably, it would be better to test sysconf(_SC_PATH_MAX),
+ * but since the individual *.c files include "config.h" before
+ * <limits.h>, overriding an excessive value of PATH_MAX from
+ * "config.h" is impossible anyway, so for now, the simplest
+ * fix is to provide a value only on systems not having any.
+ * So far, we encountered no system defining PATH_MAX to an
+ * impractically large value, even though POSIX explicitly
+ * allows that.
+ *
+ * The real fix would be to replace all static buffers of size
+ * PATH_MAX by dynamically allocated buffers. But that is
+ * somewhat intrusive because it touches several files and
+ * because it requires changing struct mlink in mandocdb.c.
+ * So i'm postponing that for now.
+ */
+
+#include <limits.h>
+#include <stdio.h>
+
+int
+main(void)
+{
+ printf("PATH_MAX is defined to be %ld\n", (long)PATH_MAX);
+ return 0;
+}
+#endif /* TEST_PATH_MAX */
+#if TEST_PLEDGE
+#include <unistd.h>
+
+int
+main(void)
+{
+ return !!pledge("stdio", NULL);
+}
+#endif /* TEST_PLEDGE */
+#if TEST_PROGRAM_INVOCATION_SHORT_NAME
+#define _GNU_SOURCE /* See feature_test_macros(7) */
+#include <errno.h>
+
+int
+main(void)
+{
+
+ return !program_invocation_short_name;
+}
+#endif /* TEST_PROGRAM_INVOCATION_SHORT_NAME */
+#if TEST_READPASSPHRASE
+#include <stddef.h>
+#include <readpassphrase.h>
+
+int
+main(void)
+{
+ return !!readpassphrase("prompt: ", NULL, 0, 0);
+}
+#endif /* TEST_READPASSPHRASE */
+#if TEST_REALLOCARRAY
+#ifdef __NetBSD__
+# define _OPENBSD_SOURCE
+#endif
+#include <stdlib.h>
+
+int
+main(void)
+{
+ return !reallocarray(NULL, 2, 2);
+}
+#endif /* TEST_REALLOCARRAY */
+#if TEST_RECALLOCARRAY
+#include <stdlib.h>
+
+int
+main(void)
+{
+ return !recallocarray(NULL, 0, 2, 2);
+}
+#endif /* TEST_RECALLOCARRAY */
+#if TEST_SANDBOX_INIT
+#include <sandbox.h>
+
+int
+main(void)
+{
+ char *ep;
+ int rc;
+
+ rc = sandbox_init(kSBXProfileNoInternet, SANDBOX_NAMED, &ep);
+ if (-1 == rc)
+ sandbox_free_error(ep);
+ return(-1 == rc);
+}
+#endif /* TEST_SANDBOX_INIT */
+#if TEST_SECCOMP_FILTER
+#include <sys/prctl.h>
+#include <linux/seccomp.h>
+#include <errno.h>
+
+int
+main(void)
+{
+
+ prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, 0);
+ return(EFAULT == errno ? 0 : 1);
+}
+#endif /* TEST_SECCOMP_FILTER */
+#if TEST_SETRESGID
+#define _GNU_SOURCE /* linux */
+#include <sys/types.h>
+#include <unistd.h>
+
+int
+main(void)
+{
+ return setresgid(-1, -1, -1) == -1;
+}
+#endif /* TEST_SETRESGID */
+#if TEST_SETRESUID
+#define _GNU_SOURCE /* linux */
+#include <sys/types.h>
+#include <unistd.h>
+
+int
+main(void)
+{
+ return setresuid(-1, -1, -1) == -1;
+}
+#endif /* TEST_SETRESUID */
+#if TEST_SHA2_H
+#include <sys/types.h>
+#include <sha2.h>
+
+int main(void)
+{
+ SHA2_CTX ctx;
+ char result[SHA256_DIGEST_STRING_LENGTH];
+
+ SHA256Init(&ctx);
+ SHA256Update(&ctx, (const unsigned char *)"abcd", 4);
+ SHA256End(&ctx, result);
+
+ return 0;
+}
+#endif /* TEST_SHA2_H */
+#if TEST_SOCK_NONBLOCK
+/*
+ * Linux doesn't (always?) have this.
+ */
+
+#include <sys/socket.h>
+
+int
+main(void)
+{
+ int fd[2];
+ socketpair(AF_UNIX, SOCK_STREAM|SOCK_NONBLOCK, 0, fd);
+ return 0;
+}
+#endif /* TEST_SOCK_NONBLOCK */
+#if TEST_STATIC
+int
+main(void)
+{
+ return 0; /* not meant to do anything */
+}
+#endif /* TEST_STATIC */
+#if TEST_STRLCAT
+#include <string.h>
+
+int
+main(void)
+{
+ char buf[3] = "a";
+ return ! (strlcat(buf, "b", sizeof(buf)) == 2 &&
+ buf[0] == 'a' && buf[1] == 'b' && buf[2] == '\0');
+}
+#endif /* TEST_STRLCAT */
+#if TEST_STRLCPY
+#include <string.h>
+
+int
+main(void)
+{
+ char buf[2] = "";
+ return ! (strlcpy(buf, "a", sizeof(buf)) == 1 &&
+ buf[0] == 'a' && buf[1] == '\0');
+}
+#endif /* TEST_STRLCPY */
+#if TEST_STRNDUP
+#include <string.h>
+
+int
+main(void)
+{
+ const char *foo = "bar";
+ char *baz;
+
+ baz = strndup(foo, 1);
+ return(0 != strcmp(baz, "b"));
+}
+#endif /* TEST_STRNDUP */
+#if TEST_STRNLEN
+#include <string.h>
+
+int
+main(void)
+{
+ const char *foo = "bar";
+ size_t sz;
+
+ sz = strnlen(foo, 1);
+ return(1 != sz);
+}
+#endif /* TEST_STRNLEN */
+#if TEST_STRTONUM
+/*
+ * Copyright (c) 2015 Ingo Schwarze <schwarze@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifdef __NetBSD__
+# define _OPENBSD_SOURCE
+#endif
+#include <stdlib.h>
+
+int
+main(void)
+{
+ const char *errstr;
+
+ if (strtonum("1", 0, 2, &errstr) != 1)
+ return 1;
+ if (errstr != NULL)
+ return 2;
+ if (strtonum("1x", 0, 2, &errstr) != 0)
+ return 3;
+ if (errstr == NULL)
+ return 4;
+ if (strtonum("2", 0, 1, &errstr) != 0)
+ return 5;
+ if (errstr == NULL)
+ return 6;
+ if (strtonum("0", 1, 2, &errstr) != 0)
+ return 7;
+ if (errstr == NULL)
+ return 8;
+ return 0;
+}
+#endif /* TEST_STRTONUM */
+#if TEST_SYS_BYTEORDER_H
+#include <sys/byteorder.h>
+
+int
+main(void)
+{
+ return !LE_32(23);
+}
+#endif /* TEST_SYS_BYTEORDER_H */
+#if TEST_SYS_ENDIAN_H
+#include <sys/endian.h>
+
+int
+main(void)
+{
+ return !htole32(23);
+}
+#endif /* TEST_SYS_ENDIAN_H */
+#if TEST_SYS_MKDEV_H
+#include <sys/types.h>
+#include <sys/mkdev.h>
+
+int
+main(void)
+{
+ return !minor(0);
+}
+#endif /* TEST_SYS_MKDEV_H */
+#if TEST_SYS_QUEUE
+#include <sys/queue.h>
+#include <stddef.h>
+
+struct foo {
+ int bar;
+ TAILQ_ENTRY(foo) entries;
+};
+
+TAILQ_HEAD(fooq, foo);
+
+int
+main(void)
+{
+ struct fooq foo_q;
+ struct foo *p, *tmp;
+ int i = 0;
+
+ TAILQ_INIT(&foo_q);
+
+ /*
+ * Use TAILQ_FOREACH_SAFE because some systems (e.g., Linux)
+ * have TAILQ_FOREACH but not the safe variant.
+ */
+
+ TAILQ_FOREACH_SAFE(p, &foo_q, entries, tmp)
+ p->bar = i++;
+ return 0;
+}
+#endif /* TEST_SYS_QUEUE */
+#if TEST_SYS_SYSMACROS_H
+#include <sys/sysmacros.h>
+
+int
+main(void)
+{
+ return !minor(0);
+}
+#endif /* TEST_SYS_SYSMACROS_H */
+#if TEST_SYS_TREE
+#include <sys/tree.h>
+#include <stdlib.h>
+
+struct node {
+ RB_ENTRY(node) entry;
+ int i;
+};
+
+static int
+intcmp(struct node *e1, struct node *e2)
+{
+ return (e1->i < e2->i ? -1 : e1->i > e2->i);
+}
+
+RB_HEAD(inttree, node) head = RB_INITIALIZER(&head);
+RB_PROTOTYPE(inttree, node, entry, intcmp)
+RB_GENERATE(inttree, node, entry, intcmp)
+
+int testdata[] = {
+ 20, 16, 17, 13, 3, 6, 1, 8, 2, 4
+};
+
+int
+main(void)
+{
+ size_t i;
+ struct node *n;
+
+ for (i = 0; i < sizeof(testdata) / sizeof(testdata[0]); i++) {
+ if ((n = malloc(sizeof(struct node))) == NULL)
+ return 1;
+ n->i = testdata[i];
+ RB_INSERT(inttree, &head, n);
+ }
+
+ return 0;
+}
+
+#endif /* TEST_SYS_TREE */
+#if TEST_UNVEIL
+#include <unistd.h>
+
+int
+main(void)
+{
+ return -1 != unveil(NULL, NULL);
+}
+#endif /* TEST_UNVEIL */
+#if TEST_WAIT_ANY
+#include <sys/wait.h>
+
+int
+main(void)
+{
+ int st;
+
+ return waitpid(WAIT_ANY, &st, WNOHANG) != -1;
+}
+#endif /* TEST_WAIT_ANY */