2 * Copyright (c) 1996, 1998-2005, 2007-2011
3 * Todd C. Miller <Todd.Miller@courtesan.com>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
17 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
19 * Sponsored in part by the Defense Advanced Research Projects
20 * Agency (DARPA) and Air Force Research Laboratory, Air Force
21 * Materiel Command, USAF, under agreement number F39502-99-1-0512.
28 #include <sys/param.h>
29 #include <sys/types.h>
31 #include <sys/socket.h>
40 #endif /* STDC_HEADERS */
43 #endif /* HAVE_STRING_H */
46 #endif /* HAVE_STRINGS_H */
49 #endif /* HAVE_UNISTD_H */
52 #endif /* HAVE_FNMATCH */
53 #ifdef HAVE_NETGROUP_H
54 # include <netgroup.h>
55 #endif /* HAVE_NETGROUP_H */
58 #include <netinet/in.h>
59 #include <arpa/inet.h>
62 #include "tsgetgrpw.h"
64 #include "interfaces.h"
69 # include "compat/fnmatch.h"
70 #endif /* HAVE_FNMATCH */
75 int print_alias(void *, void *);
76 void dump_sudoers(void);
77 void print_defaults(void);
78 void print_privilege(struct privilege *);
79 void print_userspecs(void);
80 void usage(void) __attribute__((__noreturn__));
82 static void set_runaspw(const char *);
83 static void set_runasgr(const char *);
84 static int cb_runas_default(const char *);
85 static int testsudoers_printf(int msg_type, const char *fmt, ...);
86 static int testsudoers_print(const char *msg);
88 extern void setgrfile(const char *);
89 extern void setgrent(void);
90 extern void endgrent(void);
91 extern struct group *getgrent(void);
92 extern struct group *getgrnam(const char *);
93 extern struct group *getgrgid(gid_t);
94 extern void setpwfile(const char *);
95 extern void setpwent(void);
96 extern void endpwent(void);
97 extern struct passwd *getpwent(void);
98 extern struct passwd *getpwnam(const char *);
99 extern struct passwd *getpwuid(uid_t);
101 extern int (*trace_print)(const char *msg);
106 struct interface *interfaces;
107 struct sudo_user sudo_user;
108 struct passwd *list_pw;
109 static char *runas_group, *runas_user;
110 extern int parse_error;
111 sudo_printf_t sudo_printf = testsudoers_printf;
117 #if defined(SUDO_DEVEL) && defined(__OpenBSD__)
118 extern char *malloc_options;
125 main(int argc, char *argv[])
128 struct privilege *priv;
130 char *p, *grfile, *pwfile;
131 char hbuf[MAXHOSTNAMELEN + 1];
132 int match, host_match, runas_match, cmnd_match;
135 #if defined(SUDO_DEVEL) && defined(__OpenBSD__)
136 malloc_options = "AFGJPR";
142 #if !defined(HAVE_GETPROGNAME) && !defined(HAVE___PROGNAME)
143 setprogname(argc > 0 ? argv[0] : "testsudoers");
147 grfile = pwfile = NULL;
148 while ((ch = getopt(argc, argv, "dg:G:h:p:tu:")) != -1) {
160 runas_group = optarg;
166 trace_print = testsudoers_print;
179 /* Set group/passwd file and init the cache. */
191 user_cmnd = user_base = "true";
195 if ((p = strrchr(user_cmnd, '/')) != NULL)
198 user_base = user_cmnd;
201 if ((sudo_user.pw = sudo_getpwnam(user_name)) == NULL)
202 errorx(1, _("unknown user: %s"), user_name);
204 if (user_host == NULL) {
205 if (gethostname(hbuf, sizeof(hbuf)) != 0)
206 error(1, "gethostname");
207 hbuf[sizeof(hbuf) - 1] = '\0';
210 if ((p = strchr(user_host, '.'))) {
212 user_shost = estrdup(user_host);
215 user_shost = user_host;
218 /* Fill in user_args from argv. */
223 for (size = 0, from = argv + 1; *from; from++)
224 size += strlen(*from) + 1;
226 user_args = (char *) emalloc(size);
227 for (to = user_args, from = argv + 1; *from; from++) {
228 n = strlcpy(to, *from, size - (to - user_args));
229 if (n >= size - (to - user_args))
230 errorx(1, _("internal error, init_vars() overflow"));
237 /* Initialize default values. */
240 /* Set runas callback. */
241 sudo_defs_table[I_RUNAS_DEFAULT].callback = cb_runas_default;
243 /* Load ip addr/mask for each interface. */
244 if (get_net_ifs(&p) > 0)
247 /* Allocate space for data structures in the parser. */
248 init_parser("sudoers", 0);
250 if (yyparse() != 0 || parse_error) {
252 (void) fputs("Does not parse", stdout);
254 (void) fputs("Parses OK", stdout);
257 if (!update_defaults(SETDEF_ALL))
258 (void) fputs(" (problem with defaults entries)", stdout);
261 if (def_group_plugin && group_plugin_load(def_group_plugin) != TRUE)
262 def_group_plugin = NULL;
265 * Set runas passwd/group entries based on command line or sudoers.
266 * Note that if runas_group was specified without runas_user we
267 * defer setting runas_pw so the match routines know to ignore it.
269 if (runas_group != NULL) {
270 set_runasgr(runas_group);
271 if (runas_user != NULL)
272 set_runaspw(runas_user);
274 set_runaspw(runas_user ? runas_user : def_runas_default);
277 (void) putchar('\n');
280 exit(parse_error ? 1 : 0);
283 /* This loop must match the one in sudo_file_lookup() */
284 printf("\nEntries for user %s:\n", user_name);
286 tq_foreach_rev(&userspecs, us) {
287 if (userlist_matches(sudo_user.pw, &us->users) != ALLOW)
289 tq_foreach_rev(&us->privileges, priv) {
291 print_privilege(priv); /* XXX */
293 host_match = hostlist_matches(&priv->hostlist);
294 if (host_match == ALLOW) {
295 puts("\thost matched");
296 tq_foreach_rev(&priv->cmndlist, cs) {
297 runas_match = runaslist_matches(&cs->runasuserlist,
298 &cs->runasgrouplist);
299 if (runas_match == ALLOW) {
300 puts("\trunas matched");
301 cmnd_match = cmnd_matches(cs->cmnd);
302 if (cmnd_match != UNSPEC)
304 printf("\tcmnd %s\n", match == ALLOW ? "allowed" :
305 match == DENY ? "denied" : "unmatched");
309 puts(_("\thost unmatched"));
312 puts(match == ALLOW ? _("\nCommand allowed") :
313 match == DENY ? _("\nCommand denied") : _("\nCommand unmatched"));
317 * 0 - parsed OK and command matched.
319 * 2 - command not matched
324 exit(match == ALLOW ? 0 : match + 3);
328 set_runaspw(const char *user)
330 if (runas_pw != NULL)
333 if ((runas_pw = sudo_getpwuid(atoi(user + 1))) == NULL)
334 runas_pw = sudo_fakepwnam(user, runas_gr ? runas_gr->gr_gid : 0);
336 if ((runas_pw = sudo_getpwnam(user)) == NULL)
337 errorx(1, _("unknown user: %s"), user);
342 set_runasgr(const char *group)
344 if (runas_gr != NULL)
347 if ((runas_gr = sudo_getgrgid(atoi(group + 1))) == NULL)
348 runas_gr = sudo_fakegrnam(group);
350 if ((runas_gr = sudo_getgrnam(group)) == NULL)
351 errorx(1, _("unknown group: %s"), group);
356 * Callback for runas_default sudoers setting.
359 cb_runas_default(const char *user)
361 /* Only reset runaspw if user didn't specify one. */
362 if (!runas_user && !runas_group)
386 open_sudoers(const char *path, int isdir, int *keepopen)
388 return fopen(path, "r");
409 cleanup(int gotsignal)
418 print_member(struct member *m)
420 struct sudo_command *c;
425 fputs("ALL", stdout);
426 else if (m->type != COMMAND)
427 fputs(m->name, stdout);
429 c = (struct sudo_command *) m->name;
430 printf("%s%s%s", c->cmnd, c->args ? " " : "",
431 c->args ? c->args : "");
441 tq_foreach_fwd(&defaults, d) {
442 (void) fputs("Defaults", stdout);
457 tq_foreach_fwd(&d->binding, m) {
458 if (m != tq_first(&d->binding))
462 printf("\t%s%s", d->op == FALSE ? "!" : "", d->var);
463 if (d->val != NULL) {
464 printf("%c%s", d->op == TRUE ? '=' : d->op, d->val);
471 print_alias(void *v1, void *v2)
473 struct alias *a = (struct alias *)v1;
475 struct sudo_command *c;
479 (void) printf("Host_Alias\t%s = ", a->name);
482 (void) printf("Cmnd_Alias\t%s = ", a->name);
485 (void) printf("User_Alias\t%s = ", a->name);
488 (void) printf("Runas_Alias\t%s = ", a->name);
491 tq_foreach_fwd(&a->members, m) {
492 if (m != tq_first(&a->members))
494 if (m->type == COMMAND) {
495 c = (struct sudo_command *) m->name;
496 printf("%s%s%s", c->cmnd, c->args ? " " : "",
497 c->args ? c->args : "");
498 } else if (m->type == ALL) {
499 fputs("ALL", stdout);
501 fputs(m->name, stdout);
509 print_privilege(struct privilege *priv)
516 for (p = priv; p != NULL; p = p->next) {
518 fputs(" : ", stdout);
519 tq_foreach_fwd(&p->hostlist, m) {
520 if (m != tq_first(&p->hostlist))
524 fputs(" = ", stdout);
525 tags.nopasswd = tags.noexec = UNSPEC;
526 tq_foreach_fwd(&p->cmndlist, cs) {
527 if (cs != tq_first(&p->cmndlist))
529 if (!tq_empty(&cs->runasuserlist) || !tq_empty(&cs->runasgrouplist)) {
531 if (!tq_empty(&cs->runasuserlist)) {
532 tq_foreach_fwd(&cs->runasuserlist, m) {
533 if (m != tq_first(&cs->runasuserlist))
537 } else if (tq_empty(&cs->runasgrouplist)) {
538 fputs(def_runas_default, stdout);
540 fputs(sudo_user.pw->pw_name, stdout);
542 if (!tq_empty(&cs->runasgrouplist)) {
543 fputs(" : ", stdout);
544 tq_foreach_fwd(&cs->runasgrouplist, m) {
545 if (m != tq_first(&cs->runasgrouplist))
554 printf("ROLE=%s ", cs->role);
556 printf("TYPE=%s ", cs->type);
557 #endif /* HAVE_SELINUX */
558 if (cs->tags.nopasswd != UNSPEC && cs->tags.nopasswd != tags.nopasswd)
559 printf("%sPASSWD: ", cs->tags.nopasswd ? "NO" : "");
560 if (cs->tags.noexec != UNSPEC && cs->tags.noexec != tags.noexec)
561 printf("%sEXEC: ", cs->tags.noexec ? "NO" : "");
562 print_member(cs->cmnd);
563 memcpy(&tags, &cs->tags, sizeof(tags));
569 print_userspecs(void)
574 tq_foreach_fwd(&userspecs, us) {
575 tq_foreach_fwd(&us->users, m) {
576 if (m != tq_first(&us->users))
581 print_privilege(us->privileges.first); /* XXX */
587 testsudoers_printf(int msg_type, const char *fmt, ...)
593 case SUDO_CONV_INFO_MSG:
596 case SUDO_CONV_ERROR_MSG:
605 vfprintf(fp, fmt, ap);
617 alias_apply(print_alias, NULL);
623 static int testsudoers_print(const char *msg)
625 return fputs(msg, stderr);
631 (void) fprintf(stderr, "usage: %s [-dt] [-G grfile] [-g group] [-h host] [-p pwfile] [-u user] <user> <command> [args]\n", getprogname());