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📄 Makefile.inc(11.75 KB)
📄 Symbol.map(8.61 KB)
📄 __getosreldate.c(2.34 KB)
📄 __pthread_mutex_init_calloc_cb_stub.c(1.78 KB)
📄 __xuname.c(3.54 KB)
📄 _once_stub.c(2.45 KB)
📄 _pthread_stubs.c(13.83 KB)
📄 _rand48.c(1.37 KB)
📄 _spinlock_stub.c(2.33 KB)
📄 _thread_init.c(1.74 KB)
📄 alarm.3(2.8 KB)
📄 alarm.c(2.1 KB)
📄 arc4random-compat.c(2.35 KB)
📄 arc4random.3(4.78 KB)
📄 arc4random.c(5.87 KB)
📄 arc4random.h(4.11 KB)
📄 arc4random_uniform.c(1.77 KB)
📄 assert.c(2.12 KB)
📄 auxv.3(3.28 KB)
📄 auxv.c(8.11 KB)
📄 basename.3(2.22 KB)
📄 basename.c(1.91 KB)
📄 basename_compat.c(2.18 KB)
📄 cap_rights_get.3(3.53 KB)
📄 cap_sandboxed.3(2.45 KB)
📄 cap_sandboxed.c(1.79 KB)
📄 check_utility_compat.3(2.99 KB)
📄 check_utility_compat.c(2.3 KB)
📄 clock.3(2.59 KB)
📄 clock.c(2.16 KB)
📄 clock_getcpuclockid.3(3.31 KB)
📄 clock_getcpuclockid.c(1.67 KB)
📄 closedir.c(2.38 KB)
📄 confstr.3(3.6 KB)
📄 confstr.c(3.78 KB)
📄 crypt.c(3.13 KB)
📄 ctermid.3(3.03 KB)
📄 ctermid.c(2.21 KB)
📄 daemon.3(3.92 KB)
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📄 devname-compat11.c(1.79 KB)
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📄 directory.3(8.7 KB)
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📄 dirname_compat.c(2.05 KB)
📄 disklabel.c(4.86 KB)
📄 dl_iterate_phdr.3(3.27 KB)
📄 dladdr.3(3.92 KB)
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📄 dlinfo.3(7.14 KB)
📄 dllockinit.3(3.9 KB)
📄 dlopen.3(11.35 KB)
📄 drand48.c(605 B)
📄 dup3.3(2.74 KB)
📄 dup3.c(1.96 KB)
📄 elf_utils.c(3.67 KB)
📄 erand48.c(691 B)
📄 err.3(5.79 KB)
📄 err.c(4.35 KB)
📄 errlst.c(8.3 KB)
📄 errno.c(1.45 KB)
📄 eventfd.c(1.79 KB)
📄 exec.3(9.24 KB)
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📄 fdevname.c(1.83 KB)
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📄 feature_present.c(2.26 KB)
📄 fmtcheck.3(3.27 KB)
📄 fmtcheck.c(6.92 KB)
📄 fmtmsg.3(6.45 KB)
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📄 fnmatch.3(4.11 KB)
📄 fnmatch.c(8.85 KB)
📄 fpclassify.3(3.11 KB)
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📄 frexp.3(2.76 KB)
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📄 fstab.c(6.85 KB)
📄 ftok.3(2.71 KB)
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📄 fts-compat.c(32.07 KB)
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📄 fts-compat11.h(3.85 KB)
📄 fts.3(19.27 KB)
📄 fts.c(30.66 KB)
📄 ftw-compat11.c(2.59 KB)
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📄 gen-compat.h(2.35 KB)
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📄 getbootfile.3(2.57 KB)
📄 getbootfile.c(2.01 KB)
📄 getbsize.3(3.05 KB)
📄 getbsize.c(3 KB)
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📄 getcap.c(22.93 KB)
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📄 getcwd.3(4.08 KB)
📄 getcwd.c(5.61 KB)
📄 getdiskbyname.3(2.23 KB)
📄 getdomainname.3(2.94 KB)
📄 getdomainname.c(1.98 KB)
📄 getentropy.3(2.05 KB)
📄 getentropy.c(4.09 KB)
📄 getfsent.3(4.54 KB)
📄 getgrent.3(6.7 KB)
📄 getgrent.c(34.33 KB)
📄 getgrouplist.3(2.81 KB)
📄 getgrouplist.c(2.03 KB)
📄 gethostname.3(3.58 KB)
📄 gethostname.c(2.02 KB)
📄 getloadavg.3(2.44 KB)
📄 getloadavg.c(2.39 KB)
📄 getlogin.c(2.65 KB)
📄 getmntinfo-compat11.c(2.61 KB)
📄 getmntinfo.3(3.1 KB)
📄 getmntinfo.c(2.57 KB)
📄 getnetgrent.3(4.02 KB)
📄 getnetgrent.c(24.86 KB)
📄 getosreldate.3(2.48 KB)
📄 getosreldate.c(2.09 KB)
📄 getpagesize.3(2.17 KB)
📄 getpagesize.c(2.46 KB)
📄 getpagesizes.3(2.94 KB)
📄 getpagesizes.c(2.99 KB)
📄 getpass.3(3 KB)
📄 getpeereid.3(3.36 KB)
📄 getpeereid.c(1.95 KB)
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📄 getprogname.c(249 B)
📄 getpwent.3(7.67 KB)
📄 getpwent.c(44.7 KB)
📄 getttyent.3(5.75 KB)
📄 getttyent.c(6.7 KB)
📄 getusershell.3(2.86 KB)
📄 getusershell.c(5.74 KB)
📄 getutxent.3(11.32 KB)
📄 getutxent.c(4.89 KB)
📄 getvfsbyname.3(3.44 KB)
📄 getvfsbyname.c(3.1 KB)
📄 glob-compat11.c(25.67 KB)
📄 glob-compat11.h(2.8 KB)
📄 glob.3(10.79 KB)
📄 glob.c(26.49 KB)
📄 initgroups.3(2.62 KB)
📄 initgroups.c(2.33 KB)
📄 isatty.c(1.84 KB)
📄 isgreater.3(2.86 KB)
📄 isinf.c(2.14 KB)
📄 isnan.c(2.36 KB)
📄 jrand48.c(662 B)
📄 lcong48.c(832 B)
📄 ldexp.3(2.47 KB)
📄 ldexp.c(2.89 KB)
📄 libc_dlopen.c(1.88 KB)
📄 lockf.3(7.27 KB)
📄 lockf.c(2.55 KB)
📄 lrand48.c(670 B)
📄 makecontext.3(4.25 KB)
📄 memalign.c(1.63 KB)
📄 modf.3(2.63 KB)
📄 modf.c(2.95 KB)
📄 mrand48.c(709 B)
📄 nftw-compat11.c(2.91 KB)
📄 nftw.c(2.71 KB)
📄 nice.3(2.92 KB)
📄 nice.c(2.14 KB)
📄 nlist.3(2.55 KB)
📄 nlist.c(7.54 KB)
📄 nrand48.c(628 B)
📄 opendir.c(8.52 KB)
📄 pause.3(2.36 KB)
📄 pause.c(2.01 KB)
📄 pmadvise.c(425 B)
📄 popen.3(4.86 KB)
📄 popen.c(6 KB)
📄 posix_spawn.3(14.35 KB)
📄 posix_spawn.c(14.04 KB)
📄 posix_spawn_file_actions_addopen.3(6.28 KB)
📄 posix_spawn_file_actions_init.3(3.78 KB)
📄 posix_spawnattr_getflags.3(3.81 KB)
📄 posix_spawnattr_getpgroup.3(3.45 KB)
📄 posix_spawnattr_getschedparam.3(3.69 KB)
📄 posix_spawnattr_getschedpolicy.3(3.63 KB)
📄 posix_spawnattr_getsigdefault.3(3.65 KB)
📄 posix_spawnattr_getsigmask.3(3.56 KB)
📄 posix_spawnattr_init.3(4.09 KB)
📄 psignal.3(3.18 KB)
📄 psignal.c(2.22 KB)
📄 pututxline.c(7.34 KB)
📄 pw_scan.c(6.3 KB)
📄 pw_scan.h(1.8 KB)
📄 raise.3(2.31 KB)
📄 raise.c(1.96 KB)
📄 rand48.3(4.56 KB)
📄 rand48.h(811 B)
📄 readdir-compat11.c(3.63 KB)
📄 readdir.c(3.91 KB)
📄 readpassphrase.3(4.77 KB)
📄 readpassphrase.c(5.65 KB)
📄 recvmmsg.c(2.83 KB)
📄 rewinddir.c(2.29 KB)
📄 rfork_thread.3(2.7 KB)
📄 scandir-compat11.c(4.89 KB)
📄 scandir.3(3.86 KB)
📄 scandir.c(4.8 KB)
📄 scandir_b.c(1.38 KB)
📄 seed48.c(1 KB)
📄 seekdir.c(2.17 KB)
📄 sem.c(11.4 KB)
📄 sem_destroy.3(2.51 KB)
📄 sem_getvalue.3(2.56 KB)
📄 sem_init.3(2.81 KB)
📄 sem_new.c(9.95 KB)
📄 sem_open.3(5.37 KB)
📄 sem_post.3(2.45 KB)
📄 sem_timedwait.3(5 KB)
📄 sem_wait.3(2.73 KB)
📄 semctl.c(2.67 KB)
📄 sendmmsg.c(2.1 KB)
📄 setdomainname.c(1.97 KB)
📄 sethostname.c(1.96 KB)
📄 setjmp.3(4.48 KB)
📄 setjmperr.c(2.11 KB)
📄 setmode.3(3.56 KB)
📄 setmode.c(11.38 KB)
📄 setproctitle.3(3.54 KB)
📄 setproctitle.c(4.87 KB)
📄 setprogname.c(273 B)
📄 siginterrupt.3(3.74 KB)
📄 siginterrupt.c(2.29 KB)
📄 siglist.c(3.49 KB)
📄 signal.3(9.11 KB)
📄 signal.c(2.17 KB)
📄 sigsetops.3(4.15 KB)
📄 sigsetops.c(3.04 KB)
📄 sleep.3(2.88 KB)
📄 sleep.c(2.61 KB)
📄 srand48.c(859 B)
📄 statvfs.3(4.96 KB)
📄 statvfs.c(3.82 KB)
📄 stringlist.3(3.14 KB)
📄 stringlist.c(2.74 KB)
📄 strtofflags.3(2.96 KB)
📄 strtofflags.c(4.78 KB)
📄 sysconf.3(8.75 KB)
📄 sysconf.c(15.62 KB)
📄 sysctl.3(28.37 KB)
📄 sysctl.c(5.35 KB)
📄 sysctlbyname.c(1.81 KB)
📄 sysctlnametomib.c(2.14 KB)
📄 syslog.3(7.35 KB)
📄 syslog.c(12.21 KB)
📄 tcgetpgrp.3(2.6 KB)
📄 tcgetsid.3(2.24 KB)
📄 tcgetwinsize.3(4.62 KB)
📄 tcsendbreak.3(4.75 KB)
📄 tcsetattr.3(8.86 KB)
📄 tcsetpgrp.3(3.09 KB)
📄 tcsetsid.3(2.83 KB)
📄 telldir.c(5.62 KB)
📄 telldir.h(3.84 KB)
📄 termios.c(5.63 KB)
📄 time.3(2.94 KB)
📄 time.c(1.93 KB)
📄 times.3(3.62 KB)
📄 times.c(2.49 KB)
📄 timespec_get.3(2.52 KB)
📄 timespec_get.c(1.92 KB)
📄 timezone.3(2.29 KB)
📄 timezone.c(3.94 KB)
📄 tls.c(12.39 KB)
📄 trivial-getcontextx.c(1.97 KB)
📄 ttyname.3(3.39 KB)
📄 ttyname.c(3.24 KB)
📄 ttyslot.c(1.8 KB)
📄 tzset.3(7.41 KB)
📄 ualarm.3(2.88 KB)
📄 ualarm.c(2.33 KB)
📄 ucontext.3(3.57 KB)
📄 ulimit.3(2.8 KB)
📄 ulimit.c(2.25 KB)
📄 uname.3(3.14 KB)
📄 uname.c(1.91 KB)
📄 unvis-compat.c(1.89 KB)
📄 usleep.3(2.75 KB)
📄 usleep.c(2.2 KB)
📄 utime.3(2.74 KB)
📄 utime.c(2 KB)
📄 utxdb.c(4.56 KB)
📄 utxdb.h(2.2 KB)
📄 valloc.3(2.37 KB)
📄 valloc.c(1.85 KB)
📄 wait.c(2.1 KB)
📄 wait3.c(2.13 KB)
📄 waitid.c(2.49 KB)
📄 waitpid.c(2.15 KB)
📄 wordexp.3(5.04 KB)
📄 wordexp.c(10.48 KB)

Editing: pw_scan.c

/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * 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/cdefs.h>
__SCCSID("@(#)pw_scan.c	8.3 (Berkeley) 4/2/94");
__FBSDID("$FreeBSD$");

/*
 * This module is used to "verify" password entries by chpass(1) and
 * pwd_mkdb(8).
 */

#include <sys/param.h>

#include <err.h>
#include <errno.h>
#include <pwd.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>

#include "pw_scan.h"

/*
 * Some software assumes that IDs are short.  We should emit warnings
 * for id's which cannot be stored in a short, but we are more liberal
 * by default, warning for IDs greater than USHRT_MAX.
 *
 * If pw_big_ids_warning is -1 on entry to pw_scan(), it will be set based
 * on the existence of PW_SCAN_BIG_IDS in the environment.
 *
 * It is believed all baseline system software that can not handle the
 * normal ID sizes is now gone so pw_big_ids_warning is disabled for now.
 * But the code has been left in place in case end-users want to re-enable
 * it and/or for the next time the ID sizes get bigger but pieces of the
 * system lag behind.
 */
static int	pw_big_ids_warning = 0;

void
__pw_initpwd(struct passwd *pwd)
{
	static char nul[] = "";

memset(pwd, 0, sizeof(*pwd));
	pwd->pw_uid = (uid_t)-1;  /* Considered least likely to lead to */
	pwd->pw_gid = (gid_t)-1;  /* a security issue.                  */
	pwd->pw_name = nul;
	pwd->pw_passwd = nul;
	pwd->pw_class = nul;
	pwd->pw_gecos = nul;
	pwd->pw_dir = nul;
	pwd->pw_shell = nul;
}

int
__pw_scan(char *bp, struct passwd *pw, int flags)
{
	uid_t id;
	int root;
	char *ep, *p, *sh;
	unsigned long temp;

if (pw_big_ids_warning == -1)
		pw_big_ids_warning = getenv("PW_SCAN_BIG_IDS") == NULL ? 1 : 0;

pw->pw_fields = 0;
	if (!(pw->pw_name = strsep(&bp, ":")))		/* login */
		goto fmt;
	root = !strcmp(pw->pw_name, "root");
	if (pw->pw_name[0] && (pw->pw_name[0] != '+' || pw->pw_name[1] == '\0'))
		pw->pw_fields |= _PWF_NAME;

if (!(pw->pw_passwd = strsep(&bp, ":")))	/* passwd */
		goto fmt;
	if (pw->pw_passwd[0])
		pw->pw_fields |= _PWF_PASSWD;

if (!(p = strsep(&bp, ":")))			/* uid */
		goto fmt;
	if (p[0])
		pw->pw_fields |= _PWF_UID;
	else {
		if (pw->pw_name[0] != '+' && pw->pw_name[0] != '-') {
			if (flags & _PWSCAN_WARN)
				warnx("no uid for user %s", pw->pw_name);
			return (0);
		}
	}
	errno = 0;
	temp = strtoul(p, &ep, 10);
	if ((temp == ULONG_MAX && errno == ERANGE) || temp > UID_MAX) {
		if (flags & _PWSCAN_WARN)
			warnx("%s > max uid value (%u)", p, UID_MAX);
		return (0);
	}
	id = temp;
	if (*ep != '\0') {
		if (flags & _PWSCAN_WARN)
			warnx("%s uid is incorrect", p);
		return (0);
	}
	if (root && id) {
		if (flags & _PWSCAN_WARN)
			warnx("root uid should be 0");
		return (0);
	}
	if (flags & _PWSCAN_WARN && pw_big_ids_warning && id > USHRT_MAX) {
		warnx("%s > recommended max uid value (%u)", p, USHRT_MAX);
		/*return (0);*/ /* THIS SHOULD NOT BE FATAL! */
	}
	pw->pw_uid = id;

if (!(p = strsep(&bp, ":")))			/* gid */
		goto fmt;
	if (p[0])
		pw->pw_fields |= _PWF_GID;
	else {
		if (pw->pw_name[0] != '+' && pw->pw_name[0] != '-') {
			if (flags & _PWSCAN_WARN)
				warnx("no gid for user %s", pw->pw_name);
			return (0);
		}
	}
	errno = 0;
	temp = strtoul(p, &ep, 10);
	if ((temp == ULONG_MAX && errno == ERANGE) || temp > GID_MAX) {
		if (flags & _PWSCAN_WARN)
			warnx("%s > max gid value (%u)", p, GID_MAX);
		return (0);
	}
	id = temp;
	if (*ep != '\0') {
		if (flags & _PWSCAN_WARN)
			warnx("%s gid is incorrect", p);
		return (0);
	}
	if (flags & _PWSCAN_WARN && pw_big_ids_warning && id > USHRT_MAX) {
		warnx("%s > recommended max gid value (%u)", p, USHRT_MAX);
		/* return (0); This should not be fatal! */
	}
	pw->pw_gid = id;

if (flags & _PWSCAN_MASTER ) {
		if (!(pw->pw_class = strsep(&bp, ":")))	/* class */
			goto fmt;
		if (pw->pw_class[0])
			pw->pw_fields |= _PWF_CLASS;
		
		if (!(p = strsep(&bp, ":")))		/* change */
			goto fmt;
		if (p[0])
			pw->pw_fields |= _PWF_CHANGE;
		pw->pw_change = atol(p);
		
		if (!(p = strsep(&bp, ":")))		/* expire */
			goto fmt;
		if (p[0])
			pw->pw_fields |= _PWF_EXPIRE;
		pw->pw_expire = atol(p);
	}
	if (!(pw->pw_gecos = strsep(&bp, ":")))		/* gecos */
		goto fmt;
	if (pw->pw_gecos[0])
		pw->pw_fields |= _PWF_GECOS;

if (!(pw->pw_dir = strsep(&bp, ":")))		/* directory */
		goto fmt;
	if (pw->pw_dir[0])
		pw->pw_fields |= _PWF_DIR;

if (!(pw->pw_shell = strsep(&bp, ":")))		/* shell */
		goto fmt;

p = pw->pw_shell;
	if (root && *p) {				/* empty == /bin/sh */
		for (setusershell();;) {
			if (!(sh = getusershell())) {
				if (flags & _PWSCAN_WARN)
					warnx("warning, unknown root shell");
				break;
			}
			if (!strcmp(p, sh))
				break;
		}
		endusershell();
	}
	if (p[0])
		pw->pw_fields |= _PWF_SHELL;

if ((p = strsep(&bp, ":"))) {			/* too many */
fmt:		
		if (flags & _PWSCAN_WARN)
			warnx("corrupted entry");
		return (0);
	}
	return (1);
}

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Editing: pw_scan.c

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