2 * Copyright (c) 1999-2005, 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.
17 * Sponsored in part by the Defense Advanced Research Projects
18 * Agency (DARPA) and Air Force Research Laboratory, Air Force
19 * Materiel Command, USAF, under agreement number F39502-99-1-0512.
24 #include <sys/types.h>
25 #include <sys/param.h>
34 #endif /* STDC_HEADERS */
37 #endif /* HAVE_STRING_H */
40 #endif /* HAVE_STRINGS_H */
43 #endif /* HAVE_UNISTD_H */
52 * For converting between syslog numbers and strings.
59 #ifdef LOG_NFACILITIES
60 static struct strmap facilities[] = {
62 { "authpriv", LOG_AUTHPRIV },
65 { "daemon", LOG_DAEMON },
67 { "local0", LOG_LOCAL0 },
68 { "local1", LOG_LOCAL1 },
69 { "local2", LOG_LOCAL2 },
70 { "local3", LOG_LOCAL3 },
71 { "local4", LOG_LOCAL4 },
72 { "local5", LOG_LOCAL5 },
73 { "local6", LOG_LOCAL6 },
74 { "local7", LOG_LOCAL7 },
77 #endif /* LOG_NFACILITIES */
79 static struct strmap priorities[] = {
80 { "alert", LOG_ALERT },
82 { "debug", LOG_DEBUG },
83 { "emerg", LOG_EMERG },
86 { "notice", LOG_NOTICE },
87 { "warning", LOG_WARNING },
94 static int store_int(char *, struct sudo_defs_types *, int);
95 static int store_list(char *, struct sudo_defs_types *, int);
96 static int store_mode(char *, struct sudo_defs_types *, int);
97 static int store_str(char *, struct sudo_defs_types *, int);
98 static int store_syslogfac(char *, struct sudo_defs_types *, int);
99 static int store_syslogpri(char *, struct sudo_defs_types *, int);
100 static int store_tuple(char *, struct sudo_defs_types *, int);
101 static int store_uint(char *, struct sudo_defs_types *, int);
102 static int store_float(char *, struct sudo_defs_types *, int);
103 static void list_op(char *, size_t, struct sudo_defs_types *, enum list_ops);
104 static const char *logfac2str(int);
105 static const char *logpri2str(int);
108 * Table describing compile-time and run-time options.
110 #include <def_data.c>
113 * Print version and configure info.
118 struct sudo_defs_types *cur;
119 struct list_member *item;
120 struct def_values *def;
123 for (cur = sudo_defs_table; cur->name; cur++) {
126 switch (cur->type & T_MASK) {
129 sudo_printf(SUDO_CONV_INFO_MSG, "%s\n", desc);
132 if (cur->sd_un.str) {
133 sudo_printf(SUDO_CONV_INFO_MSG, desc, cur->sd_un.str);
134 sudo_printf(SUDO_CONV_INFO_MSG, "\n");
138 if (cur->sd_un.ival) {
139 sudo_printf(SUDO_CONV_INFO_MSG, desc,
140 logfac2str(cur->sd_un.ival));
141 sudo_printf(SUDO_CONV_INFO_MSG, "\n");
145 if (cur->sd_un.ival) {
146 sudo_printf(SUDO_CONV_INFO_MSG, desc,
147 logpri2str(cur->sd_un.ival));
148 sudo_printf(SUDO_CONV_INFO_MSG, "\n");
153 sudo_printf(SUDO_CONV_INFO_MSG, desc, cur->sd_un.ival);
154 sudo_printf(SUDO_CONV_INFO_MSG, "\n");
157 sudo_printf(SUDO_CONV_INFO_MSG, desc, cur->sd_un.fval);
158 sudo_printf(SUDO_CONV_INFO_MSG, "\n");
161 sudo_printf(SUDO_CONV_INFO_MSG, desc, cur->sd_un.mode);
162 sudo_printf(SUDO_CONV_INFO_MSG, "\n");
165 if (cur->sd_un.list) {
166 sudo_printf(SUDO_CONV_INFO_MSG, "%s\n", desc);
167 for (item = cur->sd_un.list; item; item = item->next) {
168 sudo_printf(SUDO_CONV_INFO_MSG,
169 "\t%s\n", item->value);
174 for (def = cur->values; def->sval; def++) {
175 if (cur->sd_un.ival == def->ival) {
176 sudo_printf(SUDO_CONV_INFO_MSG, desc, def->sval);
180 sudo_printf(SUDO_CONV_INFO_MSG, "\n");
188 * Sets/clears an entry in the defaults structure
189 * If a variable that takes a value is used in a boolean
190 * context with op == 0, disable that variable.
191 * Eg. you may want to turn off logging to a file for some hosts.
192 * This is only meaningful for variables that are *optional*.
195 set_default(char *var, char *val, int op)
197 struct sudo_defs_types *cur;
200 for (cur = sudo_defs_table, num = 0; cur->name; cur++, num++) {
201 if (strcmp(var, cur->name) == 0)
205 warningx(_("unknown defaults entry `%s'"), var);
209 switch (cur->type & T_MASK) {
211 if (!store_syslogfac(val, cur, op)) {
213 warningx(_("value `%s' is invalid for option `%s'"),
216 warningx(_("no value specified for `%s'"), var);
221 if (!store_syslogpri(val, cur, op)) {
223 warningx(_("value `%s' is invalid for option `%s'"),
226 warningx(_("no value specified for `%s'"), var);
232 /* Check for bogus boolean usage or lack of a value. */
233 if (!ISSET(cur->type, T_BOOL) || op != FALSE) {
234 warningx(_("no value specified for `%s'"), var);
238 if (ISSET(cur->type, T_PATH) && val && *val != '/') {
239 warningx(_("values for `%s' must start with a '/'"), var);
242 if (!store_str(val, cur, op)) {
243 warningx(_("value `%s' is invalid for option `%s'"), val, var);
249 /* Check for bogus boolean usage or lack of a value. */
250 if (!ISSET(cur->type, T_BOOL) || op != FALSE) {
251 warningx(_("no value specified for `%s'"), var);
255 if (!store_int(val, cur, op)) {
256 warningx(_("value `%s' is invalid for option `%s'"), val, var);
262 /* Check for bogus boolean usage or lack of a value. */
263 if (!ISSET(cur->type, T_BOOL) || op != FALSE) {
264 warningx(_("no value specified for `%s'"), var);
268 if (!store_uint(val, cur, op)) {
269 warningx(_("value `%s' is invalid for option `%s'"), val, var);
275 /* Check for bogus boolean usage or lack of a value. */
276 if (!ISSET(cur->type, T_BOOL) || op != FALSE) {
277 warningx(_("no value specified for `%s'"), var);
281 if (!store_float(val, cur, op)) {
282 warningx(_("value `%s' is invalid for option `%s'"), val, var);
288 /* Check for bogus boolean usage or lack of a value. */
289 if (!ISSET(cur->type, T_BOOL) || op != FALSE) {
290 warningx(_("no value specified for `%s'"), var);
294 if (!store_mode(val, cur, op)) {
295 warningx(_("value `%s' is invalid for option `%s'"), val, var);
301 warningx(_("option `%s' does not take a value"), var);
304 cur->sd_un.flag = op;
308 /* Check for bogus boolean usage or lack of a value. */
309 if (!ISSET(cur->type, T_BOOL) || op != FALSE) {
310 warningx(_("no value specified for `%s'"), var);
314 if (!store_list(val, cur, op)) {
315 warningx(_("value `%s' is invalid for option `%s'"), val, var);
320 if (!val && !ISSET(cur->type, T_BOOL)) {
321 warningx(_("no value specified for `%s'"), var);
324 if (!store_tuple(val, cur, op)) {
325 warningx(_("value `%s' is invalid for option `%s'"), val, var);
335 * Set default options to compiled-in values.
336 * Any of these may be overridden at runtime by a "Defaults" file.
341 static int firsttime = 1;
342 struct sudo_defs_types *def;
344 /* Clear any old settings. */
346 for (def = sudo_defs_table; def->name; def++) {
347 switch (def->type & T_MASK) {
349 efree(def->sd_un.str);
350 def->sd_un.str = NULL;
353 list_op(NULL, 0, def, freeall);
356 zero_bytes(&def->sd_un, sizeof(def->sd_un));
360 /* First initialize the flags. */
361 #ifdef LONG_OTP_PROMPT
362 def_long_otp_prompt = TRUE;
364 #ifdef IGNORE_DOT_PATH
365 def_ignore_dot = TRUE;
367 #ifdef ALWAYS_SEND_MAIL
368 def_mail_always = TRUE;
370 #ifdef SEND_MAIL_WHEN_NO_USER
371 def_mail_no_user = TRUE;
373 #ifdef SEND_MAIL_WHEN_NO_HOST
374 def_mail_no_host = TRUE;
376 #ifdef SEND_MAIL_WHEN_NOT_OK
377 def_mail_no_perms = TRUE;
379 #ifndef NO_TTY_TICKETS
380 def_tty_tickets = TRUE;
385 #ifndef NO_AUTHENTICATION
386 def_authenticate = TRUE;
389 def_root_sudo = TRUE;
394 #ifdef SHELL_IF_NO_ARGS
395 def_shell_noargs = TRUE;
397 #ifdef SHELL_SETS_HOME
400 #ifndef DONT_LEAK_PATH_INFO
401 def_path_info = TRUE;
410 def_env_editor = TRUE;
412 #ifdef UMASK_OVERRIDE
413 def_umask_override = TRUE;
415 def_iolog_file = estrdup("%{seq}");
416 def_iolog_dir = estrdup(_PATH_SUDO_IO_LOGDIR);
417 def_sudoers_locale = estrdup("C");
418 def_env_reset = ENV_RESET;
419 def_set_logname = TRUE;
420 def_closefrom = STDERR_FILENO + 1;
422 /* Syslog options need special care since they both strings and ints */
423 #if (LOGGING & SLOG_SYSLOG)
424 (void) store_syslogfac(LOGFAC, &sudo_defs_table[I_SYSLOG], TRUE);
425 (void) store_syslogpri(PRI_SUCCESS, &sudo_defs_table[I_SYSLOG_GOODPRI],
427 (void) store_syslogpri(PRI_FAILURE, &sudo_defs_table[I_SYSLOG_BADPRI],
431 /* Password flags also have a string and integer component. */
432 (void) store_tuple("any", &sudo_defs_table[I_LISTPW], TRUE);
433 (void) store_tuple("all", &sudo_defs_table[I_VERIFYPW], TRUE);
435 /* Then initialize the int-like things. */
437 def_umask = SUDO_UMASK;
441 def_loglinelen = MAXLOGFILELEN;
442 def_timestamp_timeout = TIMEOUT;
443 def_passwd_timeout = PASSWORD_TIMEOUT;
444 def_passwd_tries = TRIES_FOR_PASSWORD;
446 def_compress_io = TRUE;
449 /* Now do the strings */
450 def_mailto = estrdup(MAILTO);
451 def_mailsub = estrdup(_(MAILSUBJECT));
452 def_badpass_message = estrdup(_(INCORRECT_PASSWORD));
453 def_timestampdir = estrdup(_PATH_SUDO_TIMEDIR);
454 def_passprompt = estrdup(_(PASSPROMPT));
455 def_runas_default = estrdup(RUNAS_DEFAULT);
456 #ifdef _PATH_SUDO_SENDMAIL
457 def_mailerpath = estrdup(_PATH_SUDO_SENDMAIL);
458 def_mailerflags = estrdup("-t");
460 #if (LOGGING & SLOG_FILE)
461 def_logfile = estrdup(_PATH_SUDO_LOGFILE);
464 def_exempt_group = estrdup(EXEMPTGROUP);
467 def_secure_path = estrdup(SECURE_PATH);
469 def_editor = estrdup(EDITOR);
472 /* Finally do the lists (currently just environment tables). */
479 * Update the defaults based on what was set by sudoers.
480 * Pass in an OR'd list of which default types to update.
483 update_defaults(int what)
485 struct defaults *def;
488 tq_foreach_fwd(&defaults, def) {
491 if (ISSET(what, SETDEF_GENERIC) &&
492 !set_default(def->var, def->val, def->op))
496 if (ISSET(what, SETDEF_USER) &&
497 userlist_matches(sudo_user.pw, &def->binding) == ALLOW &&
498 !set_default(def->var, def->val, def->op))
502 if (ISSET(what, SETDEF_RUNAS) &&
503 runaslist_matches(&def->binding, NULL) == ALLOW &&
504 !set_default(def->var, def->val, def->op))
508 if (ISSET(what, SETDEF_HOST) &&
509 hostlist_matches(&def->binding) == ALLOW &&
510 !set_default(def->var, def->val, def->op))
514 if (ISSET(what, SETDEF_CMND) &&
515 cmndlist_matches(&def->binding) == ALLOW &&
516 !set_default(def->var, def->val, def->op))
525 store_int(char *val, struct sudo_defs_types *def, int op)
533 l = strtol(val, &endp, 10);
536 /* XXX - should check against INT_MAX */
537 def->sd_un.ival = (int)l;
540 return def->callback(val);
545 store_uint(char *val, struct sudo_defs_types *def, int op)
553 l = strtol(val, &endp, 10);
554 if (*endp != '\0' || l < 0)
556 /* XXX - should check against INT_MAX */
557 def->sd_un.ival = (unsigned int)l;
560 return def->callback(val);
565 store_float(char *val, struct sudo_defs_types *def, int op)
571 def->sd_un.fval = 0.0;
573 d = strtod(val, &endp);
576 /* XXX - should check against HUGE_VAL */
580 return def->callback(val);
585 store_tuple(char *val, struct sudo_defs_types *def, int op)
587 struct def_values *v;
590 * Since enums are really just ints we store the value as an ival.
591 * In the future, there may be multiple enums for different tuple
592 * types we want to avoid and special knowledge of the tuple type.
593 * This does assume that the first entry in the tuple enum will
594 * be the equivalent to a boolean "false".
597 def->sd_un.ival = (op == FALSE) ? 0 : 1;
599 for (v = def->values; v->sval != NULL; v++) {
600 if (strcmp(v->sval, val) == 0) {
601 def->sd_un.ival = v->ival;
609 return def->callback(val);
614 store_str(char *val, struct sudo_defs_types *def, int op)
617 efree(def->sd_un.str);
619 def->sd_un.str = NULL;
621 def->sd_un.str = estrdup(val);
623 return def->callback(val);
628 store_list(char *str, struct sudo_defs_types *def, int op)
632 /* Remove all old members. */
633 if (op == FALSE || op == TRUE)
634 list_op(NULL, 0, def, freeall);
636 /* Split str into multiple space-separated words and act on each one. */
640 /* Remove leading blanks, if nothing but blanks we are done. */
641 for (start = end; isblank((unsigned char)*start); start++)
646 /* Find end position and perform operation. */
647 for (end = start; *end && !isblank((unsigned char)*end); end++)
649 list_op(start, end - start, def, op == '-' ? delete : add);
650 } while (*end++ != '\0');
656 store_syslogfac(char *val, struct sudo_defs_types *def, int op)
661 def->sd_un.ival = FALSE;
664 #ifdef LOG_NFACILITIES
667 for (fac = facilities; fac->name && strcmp(val, fac->name); fac++)
669 if (fac->name == NULL)
670 return FALSE; /* not found */
672 def->sd_un.ival = fac->num;
674 def->sd_un.ival = -1;
675 #endif /* LOG_NFACILITIES */
682 #ifdef LOG_NFACILITIES
685 for (fac = facilities; fac->name && fac->num != n; fac++)
690 #endif /* LOG_NFACILITIES */
694 store_syslogpri(char *val, struct sudo_defs_types *def, int op)
698 if (op == FALSE || !val)
701 for (pri = priorities; pri->name && strcmp(val, pri->name); pri++)
703 if (pri->name == NULL)
704 return FALSE; /* not found */
706 def->sd_un.ival = pri->num;
715 for (pri = priorities; pri->name && pri->num != n; pri++)
721 store_mode(char *val, struct sudo_defs_types *def, int op)
727 def->sd_un.mode = (mode_t)0777;
729 l = strtol(val, &endp, 8);
730 if (*endp != '\0' || l < 0 || l > 0777)
732 def->sd_un.mode = (mode_t)l;
735 return def->callback(val);
740 list_op(char *val, size_t len, struct sudo_defs_types *def, enum list_ops op)
742 struct list_member *cur, *prev, *tmp;
745 for (cur = def->sd_un.list; cur; ) {
751 def->sd_un.list = NULL;
755 for (cur = def->sd_un.list, prev = NULL; cur; prev = cur, cur = cur->next) {
756 if ((strncmp(cur->value, val, len) == 0 && cur->value[len] == '\0')) {
759 return; /* already exists */
763 prev->next = cur->next;
765 def->sd_un.list = cur->next;
772 /* Add new node to the head of the list. */
774 cur = emalloc(sizeof(struct list_member));
775 cur->value = emalloc(len + 1);
776 (void) memcpy(cur->value, val, len);
777 cur->value[len] = '\0';
778 cur->next = def->sd_un.list;
779 def->sd_un.list = cur;