2 * Copyright (c) 1996, 1998-2005, 2007-2012
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 */
53 # include "compat/fnmatch.h"
54 #endif /* HAVE_FNMATCH */
55 #ifdef HAVE_NETGROUP_H
56 # include <netgroup.h>
57 #endif /* HAVE_NETGROUP_H */
60 #include <netinet/in.h>
61 #include <arpa/inet.h>
67 #include "tsgetgrpw.h"
69 #include "interfaces.h"
71 #include "sudo_conf.h"
77 int print_alias(void *, void *);
78 void dump_sudoers(void);
79 void print_defaults(void);
80 void print_privilege(struct privilege *);
81 void print_userspecs(void);
82 void usage(void) __attribute__((__noreturn__));
84 static void set_runaspw(const char *);
85 static void set_runasgr(const char *);
86 static int cb_runas_default(const char *);
87 static int testsudoers_printf(int msg_type, const char *fmt, ...);
88 static int testsudoers_print(const char *msg);
90 extern void setgrfile(const char *);
91 extern void setgrent(void);
92 extern void endgrent(void);
93 extern struct group *getgrent(void);
94 extern struct group *getgrnam(const char *);
95 extern struct group *getgrgid(gid_t);
96 extern void setpwfile(const char *);
97 extern void setpwent(void);
98 extern void endpwent(void);
99 extern struct passwd *getpwent(void);
100 extern struct passwd *getpwnam(const char *);
101 extern struct passwd *getpwuid(uid_t);
103 extern int (*trace_print)(const char *msg);
108 struct interface *interfaces;
109 struct sudo_user sudo_user;
110 struct passwd *list_pw;
111 static char *runas_group, *runas_user;
112 extern int errorlineno;
113 extern bool parse_error;
114 extern char *errorfile;
115 sudo_printf_t sudo_printf = testsudoers_printf;
116 sudo_conv_t sudo_conv; /* NULL in non-plugin */
122 #if defined(SUDO_DEVEL) && defined(__OpenBSD__)
123 extern char *malloc_options;
130 main(int argc, char *argv[])
133 struct privilege *priv;
135 char *p, *grfile, *pwfile;
136 char hbuf[MAXHOSTNAMELEN + 1];
137 int match, host_match, runas_match, cmnd_match;
138 int ch, dflag, exitcode = 0;
139 debug_decl(main, SUDO_DEBUG_MAIN)
141 #if defined(SUDO_DEVEL) && defined(__OpenBSD__)
142 malloc_options = "AFGJPR";
148 #if !defined(HAVE_GETPROGNAME) && !defined(HAVE___PROGNAME)
149 setprogname(argc > 0 ? argv[0] : "testsudoers");
152 #ifdef HAVE_SETLOCALE
153 setlocale(LC_ALL, "");
155 bindtextdomain("sudoers", LOCALEDIR); /* XXX - should have own domain */
156 textdomain("sudoers");
158 /* Read sudo.conf. */
162 grfile = pwfile = NULL;
163 while ((ch = getopt(argc, argv, "dg:G:h:p:tu:")) != -1) {
175 runas_group = optarg;
181 trace_print = testsudoers_print;
194 /* Set group/passwd file and init the cache. */
205 user_name = argc ? *argv++ : "root";
206 user_cmnd = user_base = "true";
211 if ((p = strrchr(user_cmnd, '/')) != NULL)
214 user_base = user_cmnd;
217 if ((sudo_user.pw = sudo_getpwnam(user_name)) == NULL)
218 errorx(1, _("unknown user: %s"), user_name);
220 if (user_host == NULL) {
221 if (gethostname(hbuf, sizeof(hbuf)) != 0)
222 error(1, "gethostname");
223 hbuf[sizeof(hbuf) - 1] = '\0';
226 if ((p = strchr(user_host, '.'))) {
228 user_shost = estrdup(user_host);
231 user_shost = user_host;
234 /* Fill in user_args from argv. */
239 for (size = 0, from = argv; *from; from++)
240 size += strlen(*from) + 1;
242 user_args = (char *) emalloc(size);
243 for (to = user_args, from = argv; *from; from++) {
244 n = strlcpy(to, *from, size - (to - user_args));
245 if (n >= size - (to - user_args))
246 errorx(1, _("internal error, init_vars() overflow"));
253 /* Initialize default values. */
256 /* Set runas callback. */
257 sudo_defs_table[I_RUNAS_DEFAULT].callback = cb_runas_default;
259 /* Load ip addr/mask for each interface. */
260 if (get_net_ifs(&p) > 0)
263 /* Allocate space for data structures in the parser. */
264 init_parser("sudoers", 0);
266 if (yyparse() != 0 || parse_error) {
268 if (errorlineno != -1)
269 (void) printf("Parse error in %s near line %d",
270 errorfile, errorlineno);
272 (void) printf("Parse error in %s", errorfile);
274 (void) fputs("Parses OK", stdout);
277 if (!update_defaults(SETDEF_ALL))
278 (void) fputs(" (problem with defaults entries)", stdout);
281 if (def_group_plugin && group_plugin_load(def_group_plugin) != true)
282 def_group_plugin = NULL;
285 * Set runas passwd/group entries based on command line or sudoers.
286 * Note that if runas_group was specified without runas_user we
287 * defer setting runas_pw so the match routines know to ignore it.
289 if (runas_group != NULL) {
290 set_runasgr(runas_group);
291 if (runas_user != NULL)
292 set_runaspw(runas_user);
294 set_runaspw(runas_user ? runas_user : def_runas_default);
297 (void) putchar('\n');
300 exitcode = parse_error ? 1 : 0;
305 /* This loop must match the one in sudo_file_lookup() */
306 printf("\nEntries for user %s:\n", user_name);
308 tq_foreach_rev(&userspecs, us) {
309 if (userlist_matches(sudo_user.pw, &us->users) != ALLOW)
311 tq_foreach_rev(&us->privileges, priv) {
313 print_privilege(priv); /* XXX */
315 host_match = hostlist_matches(&priv->hostlist);
316 if (host_match == ALLOW) {
317 puts("\thost matched");
318 tq_foreach_rev(&priv->cmndlist, cs) {
319 runas_match = runaslist_matches(&cs->runasuserlist,
320 &cs->runasgrouplist);
321 if (runas_match == ALLOW) {
322 puts("\trunas matched");
323 cmnd_match = cmnd_matches(cs->cmnd);
324 if (cmnd_match != UNSPEC)
326 printf("\tcmnd %s\n", match == ALLOW ? "allowed" :
327 match == DENY ? "denied" : "unmatched");
331 puts(_("\thost unmatched"));
334 puts(match == ALLOW ? _("\nCommand allowed") :
335 match == DENY ? _("\nCommand denied") : _("\nCommand unmatched"));
339 * 0 - parsed OK and command matched.
341 * 2 - command not matched
344 exitcode = parse_error ? 1 : (match == ALLOW ? 0 : match + 3);
346 sudo_debug_exit_int(__func__, __FILE__, __LINE__, sudo_debug_subsys, exitcode);
351 set_runaspw(const char *user)
353 debug_decl(main, SUDO_DEBUG_UTIL)
355 if (runas_pw != NULL)
358 if ((runas_pw = sudo_getpwuid(atoi(user + 1))) == NULL)
359 runas_pw = sudo_fakepwnam(user, runas_gr ? runas_gr->gr_gid : 0);
361 if ((runas_pw = sudo_getpwnam(user)) == NULL)
362 errorx(1, _("unknown user: %s"), user);
369 set_runasgr(const char *group)
371 debug_decl(main, SUDO_DEBUG_UTIL)
373 if (runas_gr != NULL)
376 if ((runas_gr = sudo_getgrgid(atoi(group + 1))) == NULL)
377 runas_gr = sudo_fakegrnam(group);
379 if ((runas_gr = sudo_getgrnam(group)) == NULL)
380 errorx(1, _("unknown group: %s"), group);
387 * Callback for runas_default sudoers setting.
390 cb_runas_default(const char *user)
392 /* Only reset runaspw if user didn't specify one. */
393 if (!runas_user && !runas_group)
417 open_sudoers(const char *path, bool doedit, bool *keepopen)
419 debug_decl(open_sudoers, SUDO_DEBUG_UTIL)
421 debug_return_ptr(fopen(path, "r"));
442 cleanup(int gotsignal)
451 print_member(struct member *m)
453 struct sudo_command *c;
454 debug_decl(print_member, SUDO_DEBUG_UTIL)
459 fputs("ALL", stdout);
460 else if (m->type != COMMAND)
461 fputs(m->name, stdout);
463 c = (struct sudo_command *) m->name;
464 printf("%s%s%s", c->cmnd, c->args ? " " : "",
465 c->args ? c->args : "");
476 debug_decl(print_member, SUDO_DEBUG_UTIL)
478 tq_foreach_fwd(&defaults, d) {
479 (void) fputs("Defaults", stdout);
494 tq_foreach_fwd(&d->binding, m) {
495 if (m != tq_first(&d->binding))
499 printf("\t%s%s", d->op == false ? "!" : "", d->var);
500 if (d->val != NULL) {
501 printf("%c%s", d->op == true ? '=' : d->op, d->val);
510 print_alias(void *v1, void *v2)
512 struct alias *a = (struct alias *)v1;
514 struct sudo_command *c;
515 debug_decl(print_alias, SUDO_DEBUG_UTIL)
519 (void) printf("Host_Alias\t%s = ", a->name);
522 (void) printf("Cmnd_Alias\t%s = ", a->name);
525 (void) printf("User_Alias\t%s = ", a->name);
528 (void) printf("Runas_Alias\t%s = ", a->name);
531 tq_foreach_fwd(&a->members, m) {
532 if (m != tq_first(&a->members))
534 if (m->type == COMMAND) {
535 c = (struct sudo_command *) m->name;
536 printf("%s%s%s", c->cmnd, c->args ? " " : "",
537 c->args ? c->args : "");
538 } else if (m->type == ALL) {
539 fputs("ALL", stdout);
541 fputs(m->name, stdout);
549 print_privilege(struct privilege *priv)
555 debug_decl(print_privilege, SUDO_DEBUG_UTIL)
557 for (p = priv; p != NULL; p = p->next) {
559 fputs(" : ", stdout);
560 tq_foreach_fwd(&p->hostlist, m) {
561 if (m != tq_first(&p->hostlist))
565 fputs(" = ", stdout);
566 tags.nopasswd = tags.noexec = UNSPEC;
567 tq_foreach_fwd(&p->cmndlist, cs) {
568 if (cs != tq_first(&p->cmndlist))
570 if (!tq_empty(&cs->runasuserlist) || !tq_empty(&cs->runasgrouplist)) {
572 if (!tq_empty(&cs->runasuserlist)) {
573 tq_foreach_fwd(&cs->runasuserlist, m) {
574 if (m != tq_first(&cs->runasuserlist))
578 } else if (tq_empty(&cs->runasgrouplist)) {
579 fputs(def_runas_default, stdout);
581 fputs(sudo_user.pw->pw_name, stdout);
583 if (!tq_empty(&cs->runasgrouplist)) {
584 fputs(" : ", stdout);
585 tq_foreach_fwd(&cs->runasgrouplist, m) {
586 if (m != tq_first(&cs->runasgrouplist))
595 printf("ROLE=%s ", cs->role);
597 printf("TYPE=%s ", cs->type);
598 #endif /* HAVE_SELINUX */
599 if (cs->tags.nopasswd != UNSPEC && cs->tags.nopasswd != tags.nopasswd)
600 printf("%sPASSWD: ", cs->tags.nopasswd ? "NO" : "");
601 if (cs->tags.noexec != UNSPEC && cs->tags.noexec != tags.noexec)
602 printf("%sEXEC: ", cs->tags.noexec ? "NO" : "");
603 print_member(cs->cmnd);
604 memcpy(&tags, &cs->tags, sizeof(tags));
611 print_userspecs(void)
615 debug_decl(print_userspecs, SUDO_DEBUG_UTIL)
617 tq_foreach_fwd(&userspecs, us) {
618 tq_foreach_fwd(&us->users, m) {
619 if (m != tq_first(&us->users))
624 print_privilege(us->privileges.first); /* XXX */
631 testsudoers_printf(int msg_type, const char *fmt, ...)
635 debug_decl(testsudoers_printf, SUDO_DEBUG_UTIL)
638 case SUDO_CONV_INFO_MSG:
641 case SUDO_CONV_ERROR_MSG:
646 debug_return_int(-1);
650 vfprintf(fp, fmt, ap);
659 debug_decl(dump_sudoers, SUDO_DEBUG_UTIL)
664 alias_apply(print_alias, NULL);
672 static int testsudoers_print(const char *msg)
674 return fputs(msg, stderr);
680 (void) fprintf(stderr, "usage: %s [-dt] [-G grfile] [-g group] [-h host] [-p pwfile] [-u user] <user> <command> [args]\n", getprogname());