+++ /dev/null
-/*
- * Copyright (c) 1996, 1998-2005, 2007-2010
- * 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.
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * 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 <config.h>
-
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <stdio.h>
-#ifdef STDC_HEADERS
-# include <stdlib.h>
-# include <stddef.h>
-#else
-# ifdef HAVE_STDLIB_H
-# include <stdlib.h>
-# endif
-#endif /* STDC_HEADERS */
-#ifdef HAVE_STRING_H
-# include <string.h>
-#endif /* HAVE_STRING_H */
-#ifdef HAVE_STRINGS_H
-# include <strings.h>
-#endif /* HAVE_STRINGS_H */
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#endif /* HAVE_UNISTD_H */
-#ifdef HAVE_FNMATCH
-# include <fnmatch.h>
-#endif /* HAVE_FNMATCH */
-#ifdef HAVE_EXTENDED_GLOB
-# include <glob.h>
-#endif /* HAVE_EXTENDED_GLOB */
-#ifdef HAVE_NETGROUP_H
-# include <netgroup.h>
-#endif /* HAVE_NETGROUP_H */
-#include <ctype.h>
-#include <pwd.h>
-#include <grp.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-#ifdef HAVE_DIRENT_H
-# include <dirent.h>
-# define NAMLEN(dirent) strlen((dirent)->d_name)
-#else
-# define dirent direct
-# define NAMLEN(dirent) (dirent)->d_namlen
-# ifdef HAVE_SYS_NDIR_H
-# include <sys/ndir.h>
-# endif
-# ifdef HAVE_SYS_DIR_H
-# include <sys/dir.h>
-# endif
-# ifdef HAVE_NDIR_H
-# include <ndir.h>
-# endif
-#endif
-
-#include "sudo.h"
-#include "interfaces.h"
-#include "parse.h"
-#include <gram.h>
-
-#ifndef HAVE_FNMATCH
-# include "emul/fnmatch.h"
-#endif /* HAVE_FNMATCH */
-#ifndef HAVE_EXTENDED_GLOB
-# include "emul/glob.h"
-#endif /* HAVE_EXTENDED_GLOB */
-#ifdef USING_NONUNIX_GROUPS
-# include "nonunix.h"
-#endif /* USING_NONUNIX_GROUPS */
-
-static struct member_list empty;
-
-static int command_matches_dir __P((char *, size_t));
-static int command_matches_glob __P((char *, char *));
-static int command_matches_fnmatch __P((char *, char *));
-static int command_matches_normal __P((char *, char *));
-
-/*
- * Returns TRUE if string 's' contains meta characters.
- */
-#define has_meta(s) (strpbrk(s, "\\?*[]") != NULL)
-
-/*
- * Check for user described by pw in a list of members.
- * Returns ALLOW, DENY or UNSPEC.
- */
-static int
-_userlist_matches(pw, list)
- struct passwd *pw;
- struct member_list *list;
-{
- struct member *m;
- struct alias *a;
- int rval, matched = UNSPEC;
-
- tq_foreach_rev(list, m) {
- switch (m->type) {
- case ALL:
- matched = !m->negated;
- break;
- case NETGROUP:
- if (netgr_matches(m->name, NULL, NULL, pw->pw_name))
- matched = !m->negated;
- break;
- case USERGROUP:
- if (usergr_matches(m->name, pw->pw_name, pw))
- matched = !m->negated;
- break;
- case ALIAS:
- if ((a = alias_find(m->name, USERALIAS)) != NULL) {
- rval = _userlist_matches(pw, &a->members);
- if (rval != UNSPEC)
- matched = m->negated ? !rval : rval;
- break;
- }
- /* FALLTHROUGH */
- case WORD:
- if (userpw_matches(m->name, pw->pw_name, pw))
- matched = !m->negated;
- break;
- }
- if (matched != UNSPEC)
- break;
- }
- return(matched);
-}
-
-int
-userlist_matches(pw, list)
- struct passwd *pw;
- struct member_list *list;
-{
- alias_seqno++;
- return(_userlist_matches(pw, list));
-}
-
-/*
- * Check for user described by pw in a list of members.
- * If both lists are empty compare against def_runas_default.
- * Returns ALLOW, DENY or UNSPEC.
- */
-static int
-_runaslist_matches(user_list, group_list)
- struct member_list *user_list;
- struct member_list *group_list;
-{
- struct member *m;
- struct alias *a;
- int rval;
- int user_matched = UNSPEC;
- int group_matched = UNSPEC;
-
- if (tq_empty(user_list) && tq_empty(group_list))
- return(userpw_matches(def_runas_default, runas_pw->pw_name, runas_pw));
-
- if (runas_pw != NULL) {
- tq_foreach_rev(user_list, m) {
- switch (m->type) {
- case ALL:
- user_matched = !m->negated;
- break;
- case NETGROUP:
- if (netgr_matches(m->name, NULL, NULL, runas_pw->pw_name))
- user_matched = !m->negated;
- break;
- case USERGROUP:
- if (usergr_matches(m->name, runas_pw->pw_name, runas_pw))
- user_matched = !m->negated;
- break;
- case ALIAS:
- if ((a = alias_find(m->name, RUNASALIAS)) != NULL) {
- rval = _runaslist_matches(&a->members, &empty);
- if (rval != UNSPEC)
- user_matched = m->negated ? !rval : rval;
- break;
- }
- /* FALLTHROUGH */
- case WORD:
- if (userpw_matches(m->name, runas_pw->pw_name, runas_pw))
- user_matched = !m->negated;
- break;
- }
- if (user_matched != UNSPEC)
- break;
- }
- }
-
- if (runas_gr != NULL) {
- if (user_matched == UNSPEC) {
- if (runas_pw == NULL || strcmp(runas_pw->pw_name, user_name) == 0)
- user_matched = ALLOW; /* only changing group */
- }
- tq_foreach_rev(group_list, m) {
- switch (m->type) {
- case ALL:
- group_matched = !m->negated;
- break;
- case ALIAS:
- if ((a = alias_find(m->name, RUNASALIAS)) != NULL) {
- rval = _runaslist_matches(&a->members, &empty);
- if (rval != UNSPEC)
- group_matched = m->negated ? !rval : rval;
- break;
- }
- /* FALLTHROUGH */
- case WORD:
- if (group_matches(m->name, runas_gr))
- group_matched = !m->negated;
- break;
- }
- if (group_matched != UNSPEC)
- break;
- }
- }
-
- if (user_matched == DENY || group_matched == DENY)
- return(DENY);
- if (user_matched == group_matched || runas_gr == NULL)
- return(user_matched);
- return(UNSPEC);
-}
-
-int
-runaslist_matches(user_list, group_list)
- struct member_list *user_list;
- struct member_list *group_list;
-{
- alias_seqno++;
- return(_runaslist_matches(user_list ? user_list : &empty,
- group_list ? group_list : &empty));
-}
-
-/*
- * Check for host and shost in a list of members.
- * Returns ALLOW, DENY or UNSPEC.
- */
-static int
-_hostlist_matches(list)
- struct member_list *list;
-{
- struct member *m;
- struct alias *a;
- int rval, matched = UNSPEC;
-
- tq_foreach_rev(list, m) {
- switch (m->type) {
- case ALL:
- matched = !m->negated;
- break;
- case NETGROUP:
- if (netgr_matches(m->name, user_host, user_shost, NULL))
- matched = !m->negated;
- break;
- case NTWKADDR:
- if (addr_matches(m->name))
- matched = !m->negated;
- break;
- case ALIAS:
- if ((a = alias_find(m->name, HOSTALIAS)) != NULL) {
- rval = _hostlist_matches(&a->members);
- if (rval != UNSPEC)
- matched = m->negated ? !rval : rval;
- break;
- }
- /* FALLTHROUGH */
- case WORD:
- if (hostname_matches(user_shost, user_host, m->name))
- matched = !m->negated;
- break;
- }
- if (matched != UNSPEC)
- break;
- }
- return(matched);
-}
-
-int
-hostlist_matches(list)
- struct member_list *list;
-{
- alias_seqno++;
- return(_hostlist_matches(list));
-}
-
-/*
- * Check for cmnd and args in a list of members.
- * Returns ALLOW, DENY or UNSPEC.
- */
-static int
-_cmndlist_matches(list)
- struct member_list *list;
-{
- struct member *m;
- int matched = UNSPEC;
-
- tq_foreach_rev(list, m) {
- matched = cmnd_matches(m);
- if (matched != UNSPEC)
- break;
- }
- return(matched);
-}
-
-int
-cmndlist_matches(list)
- struct member_list *list;
-{
- alias_seqno++;
- return(_cmndlist_matches(list));
-}
-
-/*
- * Check cmnd and args.
- * Returns ALLOW, DENY or UNSPEC.
- */
-int
-cmnd_matches(m)
- struct member *m;
-{
- struct alias *a;
- struct sudo_command *c;
- int rval, matched = UNSPEC;
-
- switch (m->type) {
- case ALL:
- matched = !m->negated;
- break;
- case ALIAS:
- alias_seqno++;
- if ((a = alias_find(m->name, CMNDALIAS)) != NULL) {
- rval = _cmndlist_matches(&a->members);
- if (rval != UNSPEC)
- matched = m->negated ? !rval : rval;
- }
- break;
- case COMMAND:
- c = (struct sudo_command *)m->name;
- if (command_matches(c->cmnd, c->args))
- matched = !m->negated;
- break;
- }
- return(matched);
-}
-
-/*
- * If path doesn't end in /, return TRUE iff cmnd & path name the same inode;
- * otherwise, return TRUE if user_cmnd names one of the inodes in path.
- */
-int
-command_matches(sudoers_cmnd, sudoers_args)
- char *sudoers_cmnd;
- char *sudoers_args;
-{
- /* Check for pseudo-commands */
- if (sudoers_cmnd[0] != '/') {
- /*
- * Return true if both sudoers_cmnd and user_cmnd are "sudoedit" AND
- * a) there are no args in sudoers OR
- * b) there are no args on command line and none req by sudoers OR
- * c) there are args in sudoers and on command line and they match
- */
- if (strcmp(sudoers_cmnd, "sudoedit") != 0 ||
- strcmp(user_cmnd, "sudoedit") != 0)
- return(FALSE);
- if (!sudoers_args ||
- (!user_args && sudoers_args && !strcmp("\"\"", sudoers_args)) ||
- (sudoers_args &&
- fnmatch(sudoers_args, user_args ? user_args : "", 0) == 0)) {
- efree(safe_cmnd);
- safe_cmnd = estrdup(sudoers_cmnd);
- return(TRUE);
- } else
- return(FALSE);
- }
-
- if (has_meta(sudoers_cmnd)) {
- /*
- * If sudoers_cmnd has meta characters in it, we need to
- * use glob(3) and/or fnmatch(3) to do the matching.
- */
- if (def_fast_glob)
- return(command_matches_fnmatch(sudoers_cmnd, sudoers_args));
- return(command_matches_glob(sudoers_cmnd, sudoers_args));
- }
- return(command_matches_normal(sudoers_cmnd, sudoers_args));
-}
-
-static int
-command_matches_fnmatch(sudoers_cmnd, sudoers_args)
- char *sudoers_cmnd;
- char *sudoers_args;
-{
- /*
- * Return true if fnmatch(3) succeeds AND
- * a) there are no args in sudoers OR
- * b) there are no args on command line and none required by sudoers OR
- * c) there are args in sudoers and on command line and they match
- * else return false.
- */
- if (fnmatch(sudoers_cmnd, user_cmnd, FNM_PATHNAME) != 0)
- return(FALSE);
- if (!sudoers_args ||
- (!user_args && sudoers_args && !strcmp("\"\"", sudoers_args)) ||
- (sudoers_args &&
- fnmatch(sudoers_args, user_args ? user_args : "", 0) == 0)) {
- if (safe_cmnd)
- free(safe_cmnd);
- safe_cmnd = estrdup(user_cmnd);
- return(TRUE);
- } else
- return(FALSE);
-}
-
-static int
-command_matches_glob(sudoers_cmnd, sudoers_args)
- char *sudoers_cmnd;
- char *sudoers_args;
-{
- struct stat sudoers_stat;
- size_t dlen;
- char **ap, *base, *cp;
- glob_t gl;
-
- /*
- * First check to see if we can avoid the call to glob(3).
- * Short circuit if there are no meta chars in the command itself
- * and user_base and basename(sudoers_cmnd) don't match.
- */
- dlen = strlen(sudoers_cmnd);
- if (sudoers_cmnd[dlen - 1] != '/') {
- if ((base = strrchr(sudoers_cmnd, '/')) != NULL) {
- base++;
- if (!has_meta(base) && strcmp(user_base, base) != 0)
- return(FALSE);
- }
- }
- /*
- * Return true if we find a match in the glob(3) results AND
- * a) there are no args in sudoers OR
- * b) there are no args on command line and none required by sudoers OR
- * c) there are args in sudoers and on command line and they match
- * else return false.
- */
-#define GLOB_FLAGS (GLOB_NOSORT | GLOB_MARK | GLOB_BRACE | GLOB_TILDE)
- if (glob(sudoers_cmnd, GLOB_FLAGS, NULL, &gl) != 0 || gl.gl_pathc == 0) {
- globfree(&gl);
- return(FALSE);
- }
- /* For each glob match, compare basename, st_dev and st_ino. */
- for (ap = gl.gl_pathv; (cp = *ap) != NULL; ap++) {
- /* If it ends in '/' it is a directory spec. */
- dlen = strlen(cp);
- if (cp[dlen - 1] == '/') {
- if (command_matches_dir(cp, dlen))
- return(TRUE);
- continue;
- }
-
- /* Only proceed if user_base and basename(cp) match */
- if ((base = strrchr(cp, '/')) != NULL)
- base++;
- else
- base = cp;
- if (strcmp(user_base, base) != 0 ||
- stat(cp, &sudoers_stat) == -1)
- continue;
- if (user_stat == NULL ||
- (user_stat->st_dev == sudoers_stat.st_dev &&
- user_stat->st_ino == sudoers_stat.st_ino)) {
- efree(safe_cmnd);
- safe_cmnd = estrdup(cp);
- break;
- }
- }
- globfree(&gl);
- if (cp == NULL)
- return(FALSE);
-
- if (!sudoers_args ||
- (!user_args && sudoers_args && !strcmp("\"\"", sudoers_args)) ||
- (sudoers_args &&
- fnmatch(sudoers_args, user_args ? user_args : "", 0) == 0)) {
- efree(safe_cmnd);
- safe_cmnd = estrdup(user_cmnd);
- return(TRUE);
- }
- return(FALSE);
-}
-
-static int
-command_matches_normal(sudoers_cmnd, sudoers_args)
- char *sudoers_cmnd;
- char *sudoers_args;
-{
- struct stat sudoers_stat;
- char *base;
- size_t dlen;
-
- /* If it ends in '/' it is a directory spec. */
- dlen = strlen(sudoers_cmnd);
- if (sudoers_cmnd[dlen - 1] == '/')
- return(command_matches_dir(sudoers_cmnd, dlen));
-
- /* Only proceed if user_base and basename(sudoers_cmnd) match */
- if ((base = strrchr(sudoers_cmnd, '/')) == NULL)
- base = sudoers_cmnd;
- else
- base++;
- if (strcmp(user_base, base) != 0 ||
- stat(sudoers_cmnd, &sudoers_stat) == -1)
- return(FALSE);
-
- /*
- * Return true if inode/device matches AND
- * a) there are no args in sudoers OR
- * b) there are no args on command line and none req by sudoers OR
- * c) there are args in sudoers and on command line and they match
- */
- if (user_stat != NULL &&
- (user_stat->st_dev != sudoers_stat.st_dev ||
- user_stat->st_ino != sudoers_stat.st_ino))
- return(FALSE);
- if (!sudoers_args ||
- (!user_args && sudoers_args && !strcmp("\"\"", sudoers_args)) ||
- (sudoers_args &&
- fnmatch(sudoers_args, user_args ? user_args : "", 0) == 0)) {
- efree(safe_cmnd);
- safe_cmnd = estrdup(sudoers_cmnd);
- return(TRUE);
- }
- return(FALSE);
-}
-
-/*
- * Return TRUE if user_cmnd names one of the inodes in dir, else FALSE.
- */
-static int
-command_matches_dir(sudoers_dir, dlen)
- char *sudoers_dir;
- size_t dlen;
-{
- struct stat sudoers_stat;
- struct dirent *dent;
- char buf[PATH_MAX];
- DIR *dirp;
-
- /*
- * Grot through directory entries, looking for user_base.
- */
- dirp = opendir(sudoers_dir);
- if (dirp == NULL)
- return(FALSE);
-
- if (strlcpy(buf, sudoers_dir, sizeof(buf)) >= sizeof(buf)) {
- closedir(dirp);
- return(FALSE);
- }
- while ((dent = readdir(dirp)) != NULL) {
- /* ignore paths > PATH_MAX (XXX - log) */
- buf[dlen] = '\0';
- if (strlcat(buf, dent->d_name, sizeof(buf)) >= sizeof(buf))
- continue;
-
- /* only stat if basenames are the same */
- if (strcmp(user_base, dent->d_name) != 0 ||
- stat(buf, &sudoers_stat) == -1)
- continue;
- if (user_stat->st_dev == sudoers_stat.st_dev &&
- user_stat->st_ino == sudoers_stat.st_ino) {
- efree(safe_cmnd);
- safe_cmnd = estrdup(buf);
- break;
- }
- }
-
- closedir(dirp);
- return(dent != NULL);
-}
-
-static int
-addr_matches_if(n)
- char *n;
-{
- int i;
- union sudo_in_addr_un addr;
- struct interface *ifp;
-#ifdef HAVE_IN6_ADDR
- int j;
-#endif
- int family;
-
-#ifdef HAVE_IN6_ADDR
- if (inet_pton(AF_INET6, n, &addr.ip6) > 0) {
- family = AF_INET6;
- } else
-#endif
- {
- family = AF_INET;
- addr.ip4.s_addr = inet_addr(n);
- }
-
- for (i = 0; i < num_interfaces; i++) {
- ifp = &interfaces[i];
- if (ifp->family != family)
- continue;
- switch(family) {
- case AF_INET:
- if (ifp->addr.ip4.s_addr == addr.ip4.s_addr ||
- (ifp->addr.ip4.s_addr & ifp->netmask.ip4.s_addr)
- == addr.ip4.s_addr)
- return(TRUE);
- break;
-#ifdef HAVE_IN6_ADDR
- case AF_INET6:
- if (memcmp(ifp->addr.ip6.s6_addr, addr.ip6.s6_addr,
- sizeof(addr.ip6.s6_addr)) == 0)
- return(TRUE);
- for (j = 0; j < sizeof(addr.ip6.s6_addr); j++) {
- if ((ifp->addr.ip6.s6_addr[j] & ifp->netmask.ip6.s6_addr[j]) != addr.ip6.s6_addr[j])
- break;
- }
- if (j == sizeof(addr.ip6.s6_addr))
- return(TRUE);
-#endif
- }
- }
-
- return(FALSE);
-}
-
-static int
-addr_matches_if_netmask(n, m)
- char *n;
- char *m;
-{
- int i;
- union sudo_in_addr_un addr, mask;
- struct interface *ifp;
-#ifdef HAVE_IN6_ADDR
- int j;
-#endif
- int family;
-
-#ifdef HAVE_IN6_ADDR
- if (inet_pton(AF_INET6, n, &addr.ip6) > 0)
- family = AF_INET6;
- else
-#endif
- {
- family = AF_INET;
- addr.ip4.s_addr = inet_addr(n);
- }
-
- if (family == AF_INET) {
- if (strchr(m, '.'))
- mask.ip4.s_addr = inet_addr(m);
- else {
- i = 32 - atoi(m);
- mask.ip4.s_addr = 0xffffffff;
- mask.ip4.s_addr >>= i;
- mask.ip4.s_addr <<= i;
- mask.ip4.s_addr = htonl(mask.ip4.s_addr);
- }
- }
-#ifdef HAVE_IN6_ADDR
- else {
- if (inet_pton(AF_INET6, m, &mask.ip6) <= 0) {
- j = atoi(m);
- for (i = 0; i < 16; i++) {
- if (j < i * 8)
- mask.ip6.s6_addr[i] = 0;
- else if (i * 8 + 8 <= j)
- mask.ip6.s6_addr[i] = 0xff;
- else
- mask.ip6.s6_addr[i] = 0xff00 >> (j - i * 8);
- }
- }
- }
-#endif /* HAVE_IN6_ADDR */
-
- for (i = 0; i < num_interfaces; i++) {
- ifp = &interfaces[i];
- if (ifp->family != family)
- continue;
- switch(family) {
- case AF_INET:
- if ((ifp->addr.ip4.s_addr & mask.ip4.s_addr) == addr.ip4.s_addr)
- return(TRUE);
-#ifdef HAVE_IN6_ADDR
- case AF_INET6:
- for (j = 0; j < sizeof(addr.ip6.s6_addr); j++) {
- if ((ifp->addr.ip6.s6_addr[j] & mask.ip6.s6_addr[j]) != addr.ip6.s6_addr[j])
- break;
- }
- if (j == sizeof(addr.ip6.s6_addr))
- return(TRUE);
-#endif /* HAVE_IN6_ADDR */
- }
- }
-
- return(FALSE);
-}
-
-/*
- * Returns TRUE if "n" is one of our ip addresses or if
- * "n" is a network that we are on, else returns FALSE.
- */
-int
-addr_matches(n)
- char *n;
-{
- char *m;
- int retval;
-
- /* If there's an explicit netmask, use it. */
- if ((m = strchr(n, '/'))) {
- *m++ = '\0';
- retval = addr_matches_if_netmask(n, m);
- *(m - 1) = '/';
- } else
- retval = addr_matches_if(n);
-
- return(retval);
-}
-
-/*
- * Returns TRUE if the hostname matches the pattern, else FALSE
- */
-int
-hostname_matches(shost, lhost, pattern)
- char *shost;
- char *lhost;
- char *pattern;
-{
- if (has_meta(pattern)) {
- if (strchr(pattern, '.'))
- return(!fnmatch(pattern, lhost, FNM_CASEFOLD));
- else
- return(!fnmatch(pattern, shost, FNM_CASEFOLD));
- } else {
- if (strchr(pattern, '.'))
- return(!strcasecmp(lhost, pattern));
- else
- return(!strcasecmp(shost, pattern));
- }
-}
-
-/*
- * Returns TRUE if the user/uid from sudoers matches the specified user/uid,
- * else returns FALSE.
- */
-int
-userpw_matches(sudoers_user, user, pw)
- char *sudoers_user;
- char *user;
- struct passwd *pw;
-{
- if (pw != NULL && *sudoers_user == '#') {
- uid_t uid = (uid_t) atoi(sudoers_user + 1);
- if (uid == pw->pw_uid)
- return(TRUE);
- }
- return(strcmp(sudoers_user, user) == 0);
-}
-
-/*
- * Returns TRUE if the group/gid from sudoers matches the specified group/gid,
- * else returns FALSE.
- */
-int
-group_matches(sudoers_group, gr)
- char *sudoers_group;
- struct group *gr;
-{
- if (*sudoers_group == '#') {
- gid_t gid = (gid_t) atoi(sudoers_group + 1);
- if (gid == gr->gr_gid)
- return(TRUE);
- }
- return(strcmp(gr->gr_name, sudoers_group) == 0);
-}
-
-/*
- * Returns TRUE if the given user belongs to the named group,
- * else returns FALSE.
- */
-int
-usergr_matches(group, user, pw)
- char *group;
- char *user;
- struct passwd *pw;
-{
- /* make sure we have a valid usergroup, sudo style */
- if (*group++ != '%')
- return(FALSE);
-
-#ifdef USING_NONUNIX_GROUPS
- if (*group == ':')
- return(sudo_nonunix_groupcheck(++group, user, pw));
-#endif /* USING_NONUNIX_GROUPS */
-
- /* look up user's primary gid in the passwd file */
- if (pw == NULL && (pw = sudo_getpwnam(user)) == NULL)
- return(FALSE);
-
- if (user_in_group(pw, group))
- return(TRUE);
-
-#ifdef USING_NONUNIX_GROUPS
- /* not a Unix group, could be an AD group */
- if (sudo_nonunix_groupcheck_available() &&
- sudo_nonunix_groupcheck(group, user, pw))
- return(TRUE);
-#endif /* USING_NONUNIX_GROUPS */
-
- return(FALSE);
-}
-
-/*
- * Returns TRUE if "host" and "user" belong to the netgroup "netgr",
- * else return FALSE. Either of "host", "shost" or "user" may be NULL
- * in which case that argument is not checked...
- *
- * XXX - swap order of host & shost
- */
-int
-netgr_matches(netgr, lhost, shost, user)
- char *netgr;
- char *lhost;
- char *shost;
- char *user;
-{
- static char *domain;
-#ifdef HAVE_GETDOMAINNAME
- static int initialized;
-#endif
-
- /* make sure we have a valid netgroup, sudo style */
- if (*netgr++ != '+')
- return(FALSE);
-
-#ifdef HAVE_GETDOMAINNAME
- /* get the domain name (if any) */
- if (!initialized) {
- domain = (char *) emalloc(MAXHOSTNAMELEN + 1);
- if (getdomainname(domain, MAXHOSTNAMELEN + 1) == -1 || *domain == '\0') {
- efree(domain);
- domain = NULL;
- }
- initialized = 1;
- }
-#endif /* HAVE_GETDOMAINNAME */
-
-#ifdef HAVE_INNETGR
- if (innetgr(netgr, lhost, user, domain))
- return(TRUE);
- else if (lhost != shost && innetgr(netgr, shost, user, domain))
- return(TRUE);
-#endif /* HAVE_INNETGR */
-
- return(FALSE);
-}
projects / debian / sudo / blobdiff