2 * Copyright (c) 1996, 1998-2005, 2007-2013
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/types.h>
30 #include <sys/socket.h>
39 #endif /* STDC_HEADERS */
42 #endif /* HAVE_STRING_H */
45 #endif /* HAVE_STRINGS_H */
48 #endif /* HAVE_UNISTD_H */
52 # include "compat/fnmatch.h"
53 #endif /* HAVE_FNMATCH */
54 #ifdef HAVE_NETGROUP_H
55 # include <netgroup.h>
56 #endif /* HAVE_NETGROUP_H */
59 #include <netinet/in.h>
60 #include <arpa/inet.h>
62 #include "tsgetgrpw.h"
64 #include "interfaces.h"
66 #include "sudo_conf.h"
67 #include "secure_path.h"
73 int print_alias(void *, void *);
74 void dump_sudoers(void);
75 void print_defaults(void);
76 void print_privilege(struct privilege *);
77 void print_userspecs(void);
78 void usage(void) __attribute__((__noreturn__));
79 static void set_runaspw(const char *);
80 static void set_runasgr(const char *);
81 static int cb_runas_default(const char *);
82 static int testsudoers_print(const char *msg);
84 extern void setgrfile(const char *);
85 extern void setgrent(void);
86 extern void endgrent(void);
87 extern struct group *getgrent(void);
88 extern struct group *getgrnam(const char *);
89 extern struct group *getgrgid(gid_t);
90 extern void setpwfile(const char *);
91 extern void setpwent(void);
92 extern void endpwent(void);
93 extern struct passwd *getpwent(void);
94 extern struct passwd *getpwnam(const char *);
95 extern struct passwd *getpwuid(uid_t);
97 extern int (*trace_print)(const char *msg);
102 struct sudo_user sudo_user;
103 struct passwd *list_pw;
104 static char *runas_group, *runas_user;
105 extern int errorlineno;
106 extern bool parse_error;
107 extern char *errorfile;
113 #if defined(SUDO_DEVEL) && defined(__OpenBSD__)
114 extern char *malloc_options;
117 extern int sudoersdebug;
120 __dso_public int main(int argc, char *argv[]);
123 main(int argc, char *argv[])
126 struct privilege *priv;
128 char *p, *grfile, *pwfile;
129 char hbuf[HOST_NAME_MAX + 1];
130 int match, host_match, runas_match, cmnd_match;
131 int ch, dflag, exitcode = 0;
132 debug_decl(main, SUDO_DEBUG_MAIN)
134 #if defined(SUDO_DEVEL) && defined(__OpenBSD__)
135 malloc_options = "AFGJPR";
141 #if !defined(HAVE_GETPROGNAME) && !defined(HAVE___PROGNAME)
142 setprogname(argc > 0 ? argv[0] : "testsudoers");
145 sudoers_setlocale(SUDOERS_LOCALE_USER, NULL);
146 bindtextdomain("sudoers", LOCALEDIR); /* XXX - should have own domain */
147 textdomain("sudoers");
149 /* Read sudo.conf. */
150 sudo_conf_read(NULL);
153 grfile = pwfile = NULL;
154 while ((ch = getopt(argc, argv, "dg:G:h:P:p:tu:U:")) != -1) {
163 sudoers_gid = (gid_t)atoi(optarg);
166 runas_group = optarg;
175 trace_print = testsudoers_print;
178 sudoers_uid = (uid_t)atoi(optarg);
191 /* Set group/passwd file and init the cache. */
202 user_name = argc ? *argv++ : "root";
203 user_cmnd = user_base = "true";
208 if ((p = strrchr(user_cmnd, '/')) != NULL)
211 user_base = user_cmnd;
214 if ((sudo_user.pw = sudo_getpwnam(user_name)) == NULL)
215 fatalx(_("unknown user: %s"), user_name);
217 if (user_host == NULL) {
218 if (gethostname(hbuf, sizeof(hbuf)) != 0)
219 fatal("gethostname");
220 hbuf[sizeof(hbuf) - 1] = '\0';
223 if ((p = strchr(user_host, '.'))) {
225 user_shost = estrdup(user_host);
228 user_shost = user_host;
231 /* Fill in user_args from argv. */
236 for (size = 0, from = argv; *from; from++)
237 size += strlen(*from) + 1;
239 user_args = (char *) emalloc(size);
240 for (to = user_args, from = argv; *from; from++) {
241 n = strlcpy(to, *from, size - (to - user_args));
242 if (n >= size - (to - user_args))
243 fatalx(_("internal error, %s overflow"), "init_vars()");
250 /* Initialize default values. */
253 /* Set runas callback. */
254 sudo_defs_table[I_RUNAS_DEFAULT].callback = cb_runas_default;
256 /* Load ip addr/mask for each interface. */
257 if (get_net_ifs(&p) > 0)
260 /* Allocate space for data structures in the parser. */
261 init_parser("sudoers", false);
263 if (sudoersparse() != 0 || parse_error) {
265 if (errorlineno != -1)
266 (void) printf("Parse error in %s near line %d",
267 errorfile, errorlineno);
269 (void) printf("Parse error in %s", errorfile);
271 (void) fputs("Parses OK", stdout);
274 if (!update_defaults(SETDEF_ALL))
275 (void) fputs(" (problem with defaults entries)", stdout);
278 if (def_group_plugin && group_plugin_load(def_group_plugin) != true)
279 def_group_plugin = NULL;
282 * Set runas passwd/group entries based on command line or sudoers.
283 * Note that if runas_group was specified without runas_user we
284 * defer setting runas_pw so the match routines know to ignore it.
286 if (runas_group != NULL) {
287 set_runasgr(runas_group);
288 if (runas_user != NULL)
289 set_runaspw(runas_user);
291 set_runaspw(runas_user ? runas_user : def_runas_default);
294 (void) putchar('\n');
297 exitcode = parse_error ? 1 : 0;
302 /* This loop must match the one in sudo_file_lookup() */
303 printf("\nEntries for user %s:\n", user_name);
305 tq_foreach_rev(&userspecs, us) {
306 if (userlist_matches(sudo_user.pw, &us->users) != ALLOW)
308 tq_foreach_rev(&us->privileges, priv) {
310 print_privilege(priv); /* XXX */
312 host_match = hostlist_matches(&priv->hostlist);
313 if (host_match == ALLOW) {
314 puts("\thost matched");
315 tq_foreach_rev(&priv->cmndlist, cs) {
316 runas_match = runaslist_matches(&cs->runasuserlist,
317 &cs->runasgrouplist, NULL, NULL);
318 if (runas_match == ALLOW) {
319 puts("\trunas matched");
320 cmnd_match = cmnd_matches(cs->cmnd);
321 if (cmnd_match != UNSPEC)
323 printf("\tcmnd %s\n", match == ALLOW ? "allowed" :
324 match == DENY ? "denied" : "unmatched");
328 puts(_("\thost unmatched"));
331 puts(match == ALLOW ? _("\nCommand allowed") :
332 match == DENY ? _("\nCommand denied") : _("\nCommand unmatched"));
336 * 0 - parsed OK and command matched.
338 * 2 - command not matched
341 exitcode = parse_error ? 1 : (match == ALLOW ? 0 : match + 3);
343 sudo_debug_exit_int(__func__, __FILE__, __LINE__, sudo_debug_subsys, exitcode);
348 set_runaspw(const char *user)
350 debug_decl(main, SUDO_DEBUG_UTIL)
352 if (runas_pw != NULL)
353 sudo_pw_delref(runas_pw);
355 if ((runas_pw = sudo_getpwuid(atoi(user + 1))) == NULL)
356 runas_pw = sudo_fakepwnam(user, runas_gr ? runas_gr->gr_gid : 0);
358 if ((runas_pw = sudo_getpwnam(user)) == NULL)
359 fatalx(_("unknown user: %s"), user);
366 set_runasgr(const char *group)
368 debug_decl(main, SUDO_DEBUG_UTIL)
370 if (runas_gr != NULL)
371 sudo_gr_delref(runas_gr);
373 if ((runas_gr = sudo_getgrgid(atoi(group + 1))) == NULL)
374 runas_gr = sudo_fakegrnam(group);
376 if ((runas_gr = sudo_getgrnam(group)) == NULL)
377 fatalx(_("unknown group: %s"), group);
384 * Callback for runas_default sudoers setting.
387 cb_runas_default(const char *user)
389 /* Only reset runaspw if user didn't specify one. */
390 if (!runas_user && !runas_group)
408 open_sudoers(const char *sudoers, bool doedit, bool *keepopen)
413 debug_decl(open_sudoers, SUDO_DEBUG_UTIL)
415 sudoers_base = strrchr(sudoers, '/');
416 if (sudoers_base != NULL)
419 switch (sudo_secure_file(sudoers, sudoers_uid, sudoers_gid, &sb)) {
420 case SUDO_PATH_SECURE:
421 fp = fopen(sudoers, "r");
423 case SUDO_PATH_MISSING:
424 warning("unable to stat %s", sudoers_base);
426 case SUDO_PATH_BAD_TYPE:
427 warningx("%s is not a regular file", sudoers_base);
429 case SUDO_PATH_WRONG_OWNER:
430 warningx("%s should be owned by uid %u",
431 sudoers_base, (unsigned int) sudoers_uid);
433 case SUDO_PATH_WORLD_WRITABLE:
434 warningx("%s is world writable", sudoers_base);
436 case SUDO_PATH_GROUP_WRITABLE:
437 warningx("%s should be owned by gid %u",
438 sudoers_base, (unsigned int) sudoers_gid);
445 debug_return_ptr(fp);
466 print_member(struct member *m)
468 struct sudo_command *c;
469 debug_decl(print_member, SUDO_DEBUG_UTIL)
474 fputs("ALL", stdout);
475 else if (m->type != COMMAND)
476 fputs(m->name, stdout);
478 c = (struct sudo_command *) m->name;
479 printf("%s%s%s", c->cmnd, c->args ? " " : "",
480 c->args ? c->args : "");
491 debug_decl(print_member, SUDO_DEBUG_UTIL)
493 tq_foreach_fwd(&defaults, d) {
494 (void) fputs("Defaults", stdout);
509 tq_foreach_fwd(&d->binding, m) {
510 if (m != tq_first(&d->binding))
514 printf("\t%s%s", d->op == false ? "!" : "", d->var);
515 if (d->val != NULL) {
516 printf("%c%s", d->op == true ? '=' : d->op, d->val);
525 print_alias(void *v1, void *v2)
527 struct alias *a = (struct alias *)v1;
529 struct sudo_command *c;
530 debug_decl(print_alias, SUDO_DEBUG_UTIL)
534 (void) printf("Host_Alias\t%s = ", a->name);
537 (void) printf("Cmnd_Alias\t%s = ", a->name);
540 (void) printf("User_Alias\t%s = ", a->name);
543 (void) printf("Runas_Alias\t%s = ", a->name);
546 tq_foreach_fwd(&a->members, m) {
547 if (m != tq_first(&a->members))
549 if (m->type == COMMAND) {
550 c = (struct sudo_command *) m->name;
551 printf("%s%s%s", c->cmnd, c->args ? " " : "",
552 c->args ? c->args : "");
553 } else if (m->type == ALL) {
554 fputs("ALL", stdout);
556 fputs(m->name, stdout);
564 print_privilege(struct privilege *priv)
570 debug_decl(print_privilege, SUDO_DEBUG_UTIL)
572 for (p = priv; p != NULL; p = p->next) {
574 fputs(" : ", stdout);
575 tq_foreach_fwd(&p->hostlist, m) {
576 if (m != tq_first(&p->hostlist))
580 fputs(" = ", stdout);
581 tags.nopasswd = UNSPEC;
582 tags.noexec = UNSPEC;
583 tq_foreach_fwd(&p->cmndlist, cs) {
584 if (cs != tq_first(&p->cmndlist))
586 if (!tq_empty(&cs->runasuserlist) || !tq_empty(&cs->runasgrouplist)) {
588 if (!tq_empty(&cs->runasuserlist)) {
589 tq_foreach_fwd(&cs->runasuserlist, m) {
590 if (m != tq_first(&cs->runasuserlist))
594 } else if (tq_empty(&cs->runasgrouplist)) {
595 fputs(def_runas_default, stdout);
597 fputs(sudo_user.pw->pw_name, stdout);
599 if (!tq_empty(&cs->runasgrouplist)) {
600 fputs(" : ", stdout);
601 tq_foreach_fwd(&cs->runasgrouplist, m) {
602 if (m != tq_first(&cs->runasgrouplist))
611 printf("ROLE=%s ", cs->role);
613 printf("TYPE=%s ", cs->type);
614 #endif /* HAVE_SELINUX */
617 printf("PRIVS=%s ", cs->privs);
619 printf("LIMITPRIVS=%s ", cs->limitprivs);
620 #endif /* HAVE_PRIV_SET */
621 if (cs->tags.nopasswd != UNSPEC && cs->tags.nopasswd != tags.nopasswd)
622 printf("%sPASSWD: ", cs->tags.nopasswd ? "NO" : "");
623 if (cs->tags.noexec != UNSPEC && cs->tags.noexec != tags.noexec)
624 printf("%sEXEC: ", cs->tags.noexec ? "NO" : "");
625 print_member(cs->cmnd);
626 memcpy(&tags, &cs->tags, sizeof(tags));
633 print_userspecs(void)
637 debug_decl(print_userspecs, SUDO_DEBUG_UTIL)
639 tq_foreach_fwd(&userspecs, us) {
640 tq_foreach_fwd(&us->users, m) {
641 if (m != tq_first(&us->users))
646 print_privilege(us->privileges.first); /* XXX */
655 debug_decl(dump_sudoers, SUDO_DEBUG_UTIL)
660 alias_apply(print_alias, NULL);
668 static int testsudoers_print(const char *msg)
670 return fputs(msg, stderr);
676 (void) fprintf(stderr, "usage: %s [-dt] [-G sudoers_gid] [-g group] [-h host] [-p grfile] [-p pwfile] [-U sudoers_uid] [-u user] <user> <command> [args]\n", getprogname());