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* Copyright (c) 1996, 1998-2005, 2007-2011
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* Todd C. Miller <Todd.Miller@courtesan.com>
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* Sponsored in part by the Defense Advanced Research Projects
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* Agency (DARPA) and Air Force Research Laboratory, Air Force
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* Materiel Command, USAF, under agreement number F39502-99-1-0512.
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#endif /* STDC_HEADERS */
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#endif /* HAVE_STRING_H */
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#endif /* HAVE_STRINGS_H */
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#endif /* HAVE_UNISTD_H */
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#endif /* HAVE_FNMATCH */
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#ifdef HAVE_NETGROUP_H
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# include <netgroup.h>
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#endif /* HAVE_NETGROUP_H */
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include "tsgetgrpw.h"
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#include "interfaces.h"
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# include "compat/fnmatch.h"
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#endif /* HAVE_FNMATCH */
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int print_alias(void *, void *);
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void dump_sudoers(void);
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void print_defaults(void);
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void print_privilege(struct privilege *);
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void print_userspecs(void);
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void usage(void) __attribute__((__noreturn__));
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static void set_runaspw(const char *);
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static void set_runasgr(const char *);
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static int cb_runas_default(const char *);
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static int testsudoers_printf(int msg_type, const char *fmt, ...);
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static int testsudoers_print(const char *msg);
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extern void setgrfile(const char *);
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extern void setgrent(void);
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extern void endgrent(void);
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extern struct group *getgrent(void);
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extern struct group *getgrnam(const char *);
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extern struct group *getgrgid(gid_t);
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extern void setpwfile(const char *);
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extern void setpwent(void);
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extern void endpwent(void);
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extern struct passwd *getpwent(void);
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extern struct passwd *getpwnam(const char *);
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extern struct passwd *getpwuid(uid_t);
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extern int (*trace_print)(const char *msg);
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struct interface *interfaces;
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struct sudo_user sudo_user;
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struct passwd *list_pw;
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static char *runas_group, *runas_user;
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extern int parse_error;
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sudo_printf_t sudo_printf = testsudoers_printf;
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#if defined(SUDO_DEVEL) && defined(__OpenBSD__)
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extern char *malloc_options;
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main(int argc, char *argv[])
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struct privilege *priv;
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char *p, *grfile, *pwfile;
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char hbuf[MAXHOSTNAMELEN + 1];
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int match, host_match, runas_match, cmnd_match;
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#if defined(SUDO_DEVEL) && defined(__OpenBSD__)
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malloc_options = "AFGJPR";
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#if !defined(HAVE_GETPROGNAME) && !defined(HAVE___PROGNAME)
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setprogname(argc > 0 ? argv[0] : "testsudoers");
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grfile = pwfile = NULL;
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while ((ch = getopt(argc, argv, "dg:G:h:p:tu:")) != -1) {
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runas_group = optarg;
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trace_print = testsudoers_print;
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/* Set group/passwd file and init the cache. */
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user_cmnd = user_base = "true";
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if ((p = strrchr(user_cmnd, '/')) != NULL)
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user_base = user_cmnd;
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if ((sudo_user.pw = sudo_getpwnam(user_name)) == NULL)
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errorx(1, _("unknown user: %s"), user_name);
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if (user_host == NULL) {
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if (gethostname(hbuf, sizeof(hbuf)) != 0)
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error(1, "gethostname");
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hbuf[sizeof(hbuf) - 1] = '\0';
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if ((p = strchr(user_host, '.'))) {
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user_shost = estrdup(user_host);
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user_shost = user_host;
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/* Fill in user_args from argv. */
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for (size = 0, from = argv + 1; *from; from++)
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size += strlen(*from) + 1;
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user_args = (char *) emalloc(size);
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for (to = user_args, from = argv + 1; *from; from++) {
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n = strlcpy(to, *from, size - (to - user_args));
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if (n >= size - (to - user_args))
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errorx(1, _("internal error, init_vars() overflow"));
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/* Initialize default values. */
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/* Set runas callback. */
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sudo_defs_table[I_RUNAS_DEFAULT].callback = cb_runas_default;
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/* Load ip addr/mask for each interface. */
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if (get_net_ifs(&p) > 0)
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/* Allocate space for data structures in the parser. */
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init_parser("sudoers", 0);
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if (yyparse() != 0 || parse_error) {
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(void) fputs("Does not parse", stdout);
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(void) fputs("Parses OK", stdout);
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if (!update_defaults(SETDEF_ALL))
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(void) fputs(" (problem with defaults entries)", stdout);
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if (def_group_plugin && group_plugin_load(def_group_plugin) != TRUE)
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def_group_plugin = NULL;
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* Set runas passwd/group entries based on command line or sudoers.
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* Note that if runas_group was specified without runas_user we
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* defer setting runas_pw so the match routines know to ignore it.
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if (runas_group != NULL) {
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set_runasgr(runas_group);
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if (runas_user != NULL)
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set_runaspw(runas_user);
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set_runaspw(runas_user ? runas_user : def_runas_default);
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(void) putchar('\n');
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exit(parse_error ? 1 : 0);
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/* This loop must match the one in sudo_file_lookup() */
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printf("\nEntries for user %s:\n", user_name);
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tq_foreach_rev(&userspecs, us) {
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if (userlist_matches(sudo_user.pw, &us->users) != ALLOW)
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tq_foreach_rev(&us->privileges, priv) {
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print_privilege(priv); /* XXX */
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host_match = hostlist_matches(&priv->hostlist);
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if (host_match == ALLOW) {
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puts("\thost matched");
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tq_foreach_rev(&priv->cmndlist, cs) {
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runas_match = runaslist_matches(&cs->runasuserlist,
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&cs->runasgrouplist);
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if (runas_match == ALLOW) {
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puts("\trunas matched");
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cmnd_match = cmnd_matches(cs->cmnd);
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if (cmnd_match != UNSPEC)
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printf("\tcmnd %s\n", match == ALLOW ? "allowed" :
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match == DENY ? "denied" : "unmatched");
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puts(_("\thost unmatched"));
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puts(match == ALLOW ? _("\nCommand allowed") :
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match == DENY ? _("\nCommand denied") : _("\nCommand unmatched"));
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* 0 - parsed OK and command matched.
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* 2 - command not matched
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exit(match == ALLOW ? 0 : match + 3);
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set_runaspw(const char *user)
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if (runas_pw != NULL)
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if ((runas_pw = sudo_getpwuid(atoi(user + 1))) == NULL)
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runas_pw = sudo_fakepwnam(user, runas_gr ? runas_gr->gr_gid : 0);
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if ((runas_pw = sudo_getpwnam(user)) == NULL)
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errorx(1, _("unknown user: %s"), user);
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set_runasgr(const char *group)
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if (runas_gr != NULL)
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if ((runas_gr = sudo_getgrgid(atoi(group + 1))) == NULL)
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runas_gr = sudo_fakegrnam(group);
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if ((runas_gr = sudo_getgrnam(group)) == NULL)
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errorx(1, _("unknown group: %s"), group);
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* Callback for runas_default sudoers setting.
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cb_runas_default(const char *user)
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/* Only reset runaspw if user didn't specify one. */
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if (!runas_user && !runas_group)
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open_sudoers(const char *path, int isdir, int *keepopen)
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return fopen(path, "r");
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cleanup(int gotsignal)
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print_member(struct member *m)
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struct sudo_command *c;
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fputs("ALL", stdout);
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else if (m->type != COMMAND)
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fputs(m->name, stdout);
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c = (struct sudo_command *) m->name;
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printf("%s%s%s", c->cmnd, c->args ? " " : "",
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c->args ? c->args : "");
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tq_foreach_fwd(&defaults, d) {
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(void) fputs("Defaults", stdout);
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tq_foreach_fwd(&d->binding, m) {
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if (m != tq_first(&d->binding))
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printf("\t%s%s", d->op == FALSE ? "!" : "", d->var);
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if (d->val != NULL) {
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printf("%c%s", d->op == TRUE ? '=' : d->op, d->val);
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print_alias(void *v1, void *v2)
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struct alias *a = (struct alias *)v1;
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struct sudo_command *c;
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(void) printf("Host_Alias\t%s = ", a->name);
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(void) printf("Cmnd_Alias\t%s = ", a->name);
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(void) printf("User_Alias\t%s = ", a->name);
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(void) printf("Runas_Alias\t%s = ", a->name);
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tq_foreach_fwd(&a->members, m) {
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if (m != tq_first(&a->members))
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if (m->type == COMMAND) {
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c = (struct sudo_command *) m->name;
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printf("%s%s%s", c->cmnd, c->args ? " " : "",
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c->args ? c->args : "");
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} else if (m->type == ALL) {
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fputs("ALL", stdout);
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fputs(m->name, stdout);
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print_privilege(struct privilege *priv)
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for (p = priv; p != NULL; p = p->next) {
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fputs(" : ", stdout);
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tq_foreach_fwd(&p->hostlist, m) {
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if (m != tq_first(&p->hostlist))
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fputs(" = ", stdout);
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tags.nopasswd = tags.noexec = UNSPEC;
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tq_foreach_fwd(&p->cmndlist, cs) {
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if (cs != tq_first(&p->cmndlist))
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if (!tq_empty(&cs->runasuserlist) || !tq_empty(&cs->runasgrouplist)) {
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if (!tq_empty(&cs->runasuserlist)) {
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tq_foreach_fwd(&cs->runasuserlist, m) {
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if (m != tq_first(&cs->runasuserlist))
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} else if (tq_empty(&cs->runasgrouplist)) {
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fputs(def_runas_default, stdout);
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fputs(sudo_user.pw->pw_name, stdout);
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if (!tq_empty(&cs->runasgrouplist)) {
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fputs(" : ", stdout);
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tq_foreach_fwd(&cs->runasgrouplist, m) {
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if (m != tq_first(&cs->runasgrouplist))
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printf("ROLE=%s ", cs->role);
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printf("TYPE=%s ", cs->type);
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#endif /* HAVE_SELINUX */
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if (cs->tags.nopasswd != UNSPEC && cs->tags.nopasswd != tags.nopasswd)
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printf("%sPASSWD: ", cs->tags.nopasswd ? "NO" : "");
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if (cs->tags.noexec != UNSPEC && cs->tags.noexec != tags.noexec)
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printf("%sEXEC: ", cs->tags.noexec ? "NO" : "");
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print_member(cs->cmnd);
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memcpy(&tags, &cs->tags, sizeof(tags));
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print_userspecs(void)
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tq_foreach_fwd(&userspecs, us) {
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tq_foreach_fwd(&us->users, m) {
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if (m != tq_first(&us->users))
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print_privilege(us->privileges.first); /* XXX */
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testsudoers_printf(int msg_type, const char *fmt, ...)
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case SUDO_CONV_INFO_MSG:
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case SUDO_CONV_ERROR_MSG:
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vfprintf(fp, fmt, ap);
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alias_apply(print_alias, NULL);
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static int testsudoers_print(const char *msg)
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return fputs(msg, stderr);
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(void) fprintf(stderr, "usage: %s [-dt] [-G grfile] [-g group] [-h host] [-p pwfile] [-u user] <user> <command> [args]\n", getprogname());
added
removed
plugins/sudoers/testsudoers.c
