+++ /dev/null
-/*
- * Copyright (c) 1996, 1998-2005, 2007-2010
- * Todd C. Miller <Todd.Miller@courtesan.com>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Sponsored in part by the Defense Advanced Research Projects
- * Agency (DARPA) and Air Force Research Laboratory, Air Force
- * Materiel Command, USAF, under agreement number F39502-99-1-0512.
- */
-
-#define _SUDO_MAIN
-
-#include <config.h>
-
-#include <sys/param.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/socket.h>
-#include <stdio.h>
-#ifdef STDC_HEADERS
-# include <stdlib.h>
-# include <stddef.h>
-#else
-# ifdef HAVE_STDLIB_H
-# include <stdlib.h>
-# endif
-#endif /* STDC_HEADERS */
-#ifdef HAVE_STRING_H
-# include <string.h>
-#endif /* HAVE_STRING_H */
-#ifdef HAVE_STRINGS_H
-# include <strings.h>
-#endif /* HAVE_STRINGS_H */
-#ifdef HAVE_UNISTD_H
-# include <unistd.h>
-#endif /* HAVE_UNISTD_H */
-#ifdef HAVE_FNMATCH
-# include <fnmatch.h>
-#endif /* HAVE_FNMATCH */
-#ifdef HAVE_NETGROUP_H
-# include <netgroup.h>
-#endif /* HAVE_NETGROUP_H */
-#include <ctype.h>
-#include <pwd.h>
-#include <grp.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-
-#include "sudo.h"
-#include "interfaces.h"
-#include "parse.h"
-#include <gram.h>
-
-#ifndef HAVE_FNMATCH
-# include "emul/fnmatch.h"
-#endif /* HAVE_FNMATCH */
-
-/*
- * Globals
- */
-int Argc, NewArgc;
-char **Argv, **NewArgv;
-int num_interfaces;
-struct interface *interfaces;
-struct sudo_user sudo_user;
-struct passwd *list_pw;
-extern int parse_error;
-
-/* For getopt(3) */
-extern char *optarg;
-extern int optind;
-
-#if defined(SUDO_DEVEL) && defined(__OpenBSD__)
-extern char *malloc_options;
-#endif
-#ifdef YYDEBUG
-extern int yydebug;
-#endif
-
-int print_alias __P((void *, void *));
-void dump_sudoers __P((void));
-void print_defaults __P((void));
-void print_privilege __P((struct privilege *));
-void print_userspecs __P((void));
-void usage __P((void)) __attribute__((__noreturn__));
-void set_runasgr __P((char *));
-void set_runaspw __P((char *));
-
-extern void setgrfile __P((const char *));
-extern void setgrent __P((void));
-extern void endgrent __P((void));
-extern struct group *getgrent __P((void));
-extern struct group *getgrnam __P((const char *));
-extern struct group *getgrgid __P((gid_t));
-extern void setpwfile __P((const char *));
-extern void setpwent __P((void));
-extern void endpwent __P((void));
-extern struct passwd *getpwent __P((void));
-extern struct passwd *getpwnam __P((const char *));
-extern struct passwd *getpwuid __P((uid_t));
-
-int
-main(argc, argv)
- int argc;
- char **argv;
-{
- struct cmndspec *cs;
- struct privilege *priv;
- struct userspec *us;
- char *p, *grfile, *pwfile, *runas_group, *runas_user;
- char hbuf[MAXHOSTNAMELEN + 1];
- int ch, dflag, rval, matched;
-
-#if defined(SUDO_DEVEL) && defined(__OpenBSD__)
- malloc_options = "AFGJPR";
-#endif
-#ifdef YYDEBUG
- yydebug = 1;
-#endif
-
- Argv = argv;
- Argc = argc;
-
- dflag = 0;
- grfile = pwfile = runas_group = runas_user = NULL;
- while ((ch = getopt(argc, argv, "dg:G:h:p:u:")) != -1) {
- switch (ch) {
- case 'd':
- dflag = 1;
- break;
- case 'h':
- user_host = optarg;
- break;
- case 'G':
- grfile = optarg;
- break;
- case 'g':
- runas_group = optarg;
- break;
- case 'p':
- pwfile = optarg;
- break;
- case 'u':
- runas_user = optarg;
- break;
- default:
- usage();
- break;
- }
- }
- argc -= optind;
- argv += optind;
- NewArgc = argc;
- NewArgv = argv;
-
- /* Set group/passwd file and init the cache. */
- if (grfile)
- setgrfile(grfile);
- if (pwfile)
- setpwfile(pwfile);
- sudo_setpwent();
- sudo_setgrent();
-
- if (argc < 2) {
- if (!dflag)
- usage();
- if ((sudo_user.pw = sudo_getpwnam("nobody")) == NULL)
- errorx(1, "no passwd entry for nobody!");
- user_cmnd = user_base = "true";
- } else {
- if ((sudo_user.pw = sudo_getpwnam(*argv)) == NULL)
- errorx(1, "no passwd entry for %s!", *argv);
- user_cmnd = *++argv;
- if ((p = strrchr(user_cmnd, '/')) != NULL)
- user_base = p + 1;
- else
- user_base = user_cmnd;
- NewArgc -= 2;
- }
-
- if (user_host == NULL) {
- if (gethostname(hbuf, sizeof(hbuf)) != 0)
- error(1, "gethostname");
- hbuf[sizeof(hbuf) - 1] = '\0';
- user_host = hbuf;
- }
- if ((p = strchr(user_host, '.'))) {
- *p = '\0';
- user_shost = estrdup(user_host);
- *p = '.';
- } else {
- user_shost = user_host;
- }
-
- /* Fill in user_args from NewArgv. */
- if (NewArgc > 1) {
- char *to, **from;
- size_t size, n;
-
- for (size = 0, from = NewArgv + 1; *from; from++)
- size += strlen(*from) + 1;
-
- user_args = (char *) emalloc(size);
- for (to = user_args, from = NewArgv + 1; *from; from++) {
- n = strlcpy(to, *from, size - (to - user_args));
- if (n >= size - (to - user_args))
- errorx(1, "internal error, init_vars() overflow");
- to += n;
- *to++ = ' ';
- }
- *--to = '\0';
- }
-
- /* Initialize default values. */
- init_defaults();
-
- /* Load ip addr/mask for each interface. */
- load_interfaces();
-
- /* Allocate space for data structures in the parser. */
- init_parser("sudoers", 0);
-
- if (yyparse() != 0 || parse_error)
- (void) fputs("Does not parse", stdout);
- else
- (void) fputs("Parses OK", stdout);
-
- if (!update_defaults(SETDEF_ALL))
- (void) fputs(" (problem with defaults entries)", stdout);
- puts(".");
-
- /*
- * Set runas passwd/group entries based on command line or sudoers.
- * Note that if runas_group was specified without runas_user we
- * defer setting runas_pw so the match routines know to ignore it.
- */
- if (runas_group != NULL) {
- set_runasgr(runas_group);
- if (runas_user != NULL)
- set_runaspw(runas_user);
- } else
- set_runaspw(runas_user ? runas_user : def_runas_default);
-
- if (dflag) {
- (void) putchar('\n');
- dump_sudoers();
- if (argc < 2)
- exit(0);
- }
-
- /* This loop must match the one in sudoers_lookup() */
- printf("\nEntries for user %s:\n", user_name);
- matched = UNSPEC;
- tq_foreach_rev(&userspecs, us) {
- if (userlist_matches(sudo_user.pw, &us->users) != ALLOW)
- continue;
- tq_foreach_rev(&us->privileges, priv) {
- putchar('\n');
- print_privilege(priv); /* XXX */
- putchar('\n');
- if (hostlist_matches(&priv->hostlist) == ALLOW) {
- puts("\thost matched");
- tq_foreach_rev(&priv->cmndlist, cs) {
- if (runaslist_matches(&cs->runasuserlist,
- &cs->runasgrouplist) == ALLOW) {
- puts("\trunas matched");
- rval = cmnd_matches(cs->cmnd);
- if (rval != UNSPEC)
- matched = rval;
- printf("\tcmnd %s\n", rval == ALLOW ? "allowed" :
- rval == DENY ? "denied" : "unmatched");
- }
- }
- } else
- puts("\thost unmatched");
- }
- }
- printf("\nCommand %s\n", matched == ALLOW ? "allowed" :
- matched == DENY ? "denied" : "unmatched");
-
- exit(0);
-}
-
-void
-set_runaspw(user)
- char *user;
-{
- if (*user == '#') {
- if ((runas_pw = sudo_getpwuid(atoi(user + 1))) == NULL)
- runas_pw = sudo_fakepwnam(user, runas_gr ? runas_gr->gr_gid : 0);
- } else {
- if ((runas_pw = sudo_getpwnam(user)) == NULL)
- errorx(1, "unknown user: %s", user);
- }
-}
-
-void
-set_runasgr(group)
- char *group;
-{
- if (*group == '#') {
- if ((runas_gr = sudo_getgrgid(atoi(group + 1))) == NULL)
- runas_gr = sudo_fakegrnam(group);
- } else {
- if ((runas_gr = sudo_getgrnam(group)) == NULL)
- errorx(1, "unknown group: %s", group);
- }
-}
-
-void
-sudo_setspent()
-{
- return;
-}
-
-void
-sudo_endspent()
-{
- return;
-}
-
-char *
-sudo_getepw(pw)
- const struct passwd *pw;
-{
- return (pw->pw_passwd);
-}
-
-void
-set_fqdn()
-{
- return;
-}
-
-FILE *
-open_sudoers(path, isdir, keepopen)
- const char *path;
- int isdir;
- int *keepopen;
-{
- return(fopen(path, "r"));
-}
-
-void
-init_envtables()
-{
- return;
-}
-
-int
-set_perms(perm)
- int perm;
-{
- return(1);
-}
-
-void
-cleanup(gotsignal)
- int gotsignal;
-{
- if (!gotsignal) {
- sudo_endpwent();
- sudo_endgrent();
- }
-}
-
-void
-print_member(m)
- struct member *m;
-{
- struct sudo_command *c;
-
- if (m->negated)
- putchar('!');
- if (m->name == NULL)
- fputs("ALL", stdout);
- else if (m->type != COMMAND)
- fputs(m->name, stdout);
- else {
- c = (struct sudo_command *) m->name;
- printf("%s%s%s", c->cmnd, c->args ? " " : "",
- c->args ? c->args : "");
- }
-}
-
-void
-print_defaults()
-{
- struct defaults *d;
- struct member *m;
-
- tq_foreach_fwd(&defaults, d) {
- (void) fputs("Defaults", stdout);
- switch (d->type) {
- case DEFAULTS_HOST:
- putchar('@');
- break;
- case DEFAULTS_USER:
- putchar(':');
- break;
- case DEFAULTS_RUNAS:
- putchar('>');
- break;
- case DEFAULTS_CMND:
- putchar('!');
- break;
- }
- tq_foreach_fwd(&d->binding, m) {
- if (m != tq_first(&d->binding))
- putchar(',');
- print_member(m);
- }
- printf("\t%s%s", d->op == FALSE ? "!" : "", d->var);
- if (d->val != NULL) {
- printf("%c%s", d->op == TRUE ? '=' : d->op, d->val);
- }
- putchar('\n');
- }
-}
-
-int
-print_alias(v1, v2)
- void *v1, *v2;
-{
- struct alias *a = (struct alias *)v1;
- struct member *m;
- struct sudo_command *c;
-
- switch (a->type) {
- case HOSTALIAS:
- (void) printf("Host_Alias\t%s = ", a->name);
- break;
- case CMNDALIAS:
- (void) printf("Cmnd_Alias\t%s = ", a->name);
- break;
- case USERALIAS:
- (void) printf("User_Alias\t%s = ", a->name);
- break;
- case RUNASALIAS:
- (void) printf("Runas_Alias\t%s = ", a->name);
- break;
- }
- tq_foreach_fwd(&a->members, m) {
- if (m != tq_first(&a->members))
- fputs(", ", stdout);
- if (m->type == COMMAND) {
- c = (struct sudo_command *) m->name;
- printf("%s%s%s", c->cmnd, c->args ? " " : "",
- c->args ? c->args : "");
- } else
- fputs(m->name, stdout);
- }
- putchar('\n');
- return(0);
-}
-
-void
-print_privilege(priv)
- struct privilege *priv;
-{
- struct cmndspec *cs;
- struct member *m;
- struct privilege *p;
- struct cmndtag tags;
-
- for (p = priv; p != NULL; p = p->next) {
- if (p != priv)
- fputs(" : ", stdout);
- tq_foreach_fwd(&p->hostlist, m) {
- if (m != tq_first(&p->hostlist))
- fputs(", ", stdout);
- print_member(m);
- }
- fputs(" = ", stdout);
- tags.nopasswd = tags.noexec = UNSPEC;
- tq_foreach_fwd(&p->cmndlist, cs) {
- if (cs != tq_first(&p->cmndlist))
- fputs(", ", stdout);
- /* XXX - runasgrouplist too */
- if (!tq_empty(&cs->runasuserlist)) {
- fputs("(", stdout);
- tq_foreach_fwd(&cs->runasuserlist, m) {
- if (m != tq_first(&cs->runasuserlist))
- fputs(", ", stdout);
- print_member(m);
- }
- fputs(") ", stdout);
- }
-#ifdef HAVE_SELINUX
- if (cs->role)
- printf("ROLE=%s ", cs->role);
- if (cs->type)
- printf("TYPE=%s ", cs->type);
-#endif /* HAVE_SELINUX */
- if (cs->tags.nopasswd != UNSPEC && cs->tags.nopasswd != tags.nopasswd)
- printf("%sPASSWD: ", cs->tags.nopasswd ? "NO" : "");
- if (cs->tags.noexec != UNSPEC && cs->tags.noexec != tags.noexec)
- printf("%sEXEC: ", cs->tags.noexec ? "NO" : "");
- print_member(cs->cmnd);
- memcpy(&tags, &cs->tags, sizeof(tags));
- }
- }
-}
-
-void
-print_userspecs()
-{
- struct member *m;
- struct userspec *us;
-
- tq_foreach_fwd(&userspecs, us) {
- tq_foreach_fwd(&us->users, m) {
- if (m != tq_first(&us->users))
- fputs(", ", stdout);
- print_member(m);
- }
- putchar('\t');
- print_privilege(us->privileges.first); /* XXX */
- putchar('\n');
- }
-}
-
-void
-dump_sudoers()
-{
- print_defaults();
-
- putchar('\n');
- alias_apply(print_alias, NULL);
-
- putchar('\n');
- print_userspecs();
-}
-
-void
-usage()
-{
- (void) fprintf(stderr, "usage: %s [-d] [-G grfile] [-g group] [-h host] [-p pwfile] [-u user] <user> <command> [args]\n", getprogname());
- exit(1);
-}
projects / debian / sudo / blobdiff