--- /dev/null
+/*
+ * Copyright (c) 1996, 1998-2005, 2007-2011
+ * 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 <errno.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+
+#include "tsgetgrpw.h"
+#include "sudoers.h"
+#include "interfaces.h"
+#include "parse.h"
+#include <gram.h>
+
+#ifndef HAVE_FNMATCH
+# include "compat/fnmatch.h"
+#endif /* HAVE_FNMATCH */
+
+/*
+ * Function Prototypes
+ */
+int print_alias(void *, void *);
+void dump_sudoers(void);
+void print_defaults(void);
+void print_privilege(struct privilege *);
+void print_userspecs(void);
+void usage(void) __attribute__((__noreturn__));
+void set_runasgr(char *);
+void set_runaspw(char *);
+void cleanup(int);
+static int testsudoers_printf(int msg_type, const char *fmt, ...);
+static int testsudoers_print(const char *msg);
+
+extern void setgrfile(const char *);
+extern void setgrent(void);
+extern void endgrent(void);
+extern struct group *getgrent(void);
+extern struct group *getgrnam(const char *);
+extern struct group *getgrgid(gid_t);
+extern void setpwfile(const char *);
+extern void setpwent(void);
+extern void endpwent(void);
+extern struct passwd *getpwent(void);
+extern struct passwd *getpwnam(const char *);
+extern struct passwd *getpwuid(uid_t);
+
+extern int (*trace_print)(const char *msg);
+
+/*
+ * Globals
+ */
+struct interface *interfaces;
+struct sudo_user sudo_user;
+struct passwd *list_pw;
+extern int parse_error;
+sudo_printf_t sudo_printf = testsudoers_printf;
+
+/* 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
+main(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 match, host_match, runas_match, cmnd_match;
+ int ch, dflag;
+
+#if defined(SUDO_DEVEL) && defined(__OpenBSD__)
+ malloc_options = "AFGJPR";
+#endif
+#ifdef YYDEBUG
+ yydebug = 1;
+#endif
+
+#if !defined(HAVE_GETPROGNAME) && !defined(HAVE___PROGNAME)
+ setprogname(argc > 0 ? argv[0] : "testsudoers");
+#endif
+
+ dflag = 0;
+ grfile = pwfile = runas_group = runas_user = NULL;
+ while ((ch = getopt(argc, argv, "dg:G:h:p:tu:")) != -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 't':
+ trace_print = testsudoers_print;
+ break;
+ case 'u':
+ runas_user = optarg;
+ break;
+ default:
+ usage();
+ break;
+ }
+ }
+ argc -= optind;
+ argv += optind;
+
+ /* 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();
+ user_name = "root";
+ user_cmnd = user_base = "true";
+ } else {
+ user_name = *argv;
+ user_cmnd = *++argv;
+ if ((p = strrchr(user_cmnd, '/')) != NULL)
+ user_base = p + 1;
+ else
+ user_base = user_cmnd;
+ argc -= 2;
+ }
+ if ((sudo_user.pw = sudo_getpwnam(user_name)) == NULL)
+ errorx(1, "no passwd entry for %s!", user_name);
+
+ 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 argv. */
+ if (argc > 0) {
+ char *to, **from;
+ size_t size, n;
+
+ for (size = 0, from = argv + 1; *from; from++)
+ size += strlen(*from) + 1;
+
+ user_args = (char *) emalloc(size);
+ for (to = user_args, from = argv + 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. */
+ if (get_net_ifs(&p) > 0)
+ set_interfaces(p);
+
+ /* Allocate space for data structures in the parser. */
+ init_parser("sudoers", 0);
+
+ if (yyparse() != 0 || parse_error) {
+ parse_error = TRUE;
+ (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(".");
+
+ if (def_group_plugin && group_plugin_load(def_group_plugin) != TRUE)
+ def_group_plugin = NULL;
+
+ /*
+ * 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(parse_error ? 1 : 0);
+ }
+
+ /* This loop must match the one in sudo_file_lookup() */
+ printf("\nEntries for user %s:\n", user_name);
+ match = 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');
+ host_match = hostlist_matches(&priv->hostlist);
+ if (host_match == ALLOW) {
+ puts("\thost matched");
+ tq_foreach_rev(&priv->cmndlist, cs) {
+ runas_match = runaslist_matches(&cs->runasuserlist,
+ &cs->runasgrouplist);
+ if (runas_match == ALLOW) {
+ puts("\trunas matched");
+ cmnd_match = cmnd_matches(cs->cmnd);
+ if (cmnd_match != UNSPEC)
+ match = cmnd_match;
+ printf("\tcmnd %s\n", match == ALLOW ? "allowed" :
+ match == DENY ? "denied" : "unmatched");
+ }
+ }
+ } else
+ puts("\thost unmatched");
+ }
+ }
+ printf("\nCommand %s\n", match == ALLOW ? "allowed" :
+ match == DENY ? "denied" : "unmatched");
+
+ /*
+ * Exit codes:
+ * 0 - parsed OK and command matched.
+ * 1 - parse error
+ * 2 - command not matched
+ * 3 - command denied
+ */
+ if (parse_error)
+ exit(1);
+ exit(match == ALLOW ? 0 : match + 3);
+}
+
+void
+set_runaspw(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(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(void)
+{
+ return;
+}
+
+void
+sudo_endspent(void)
+{
+ return;
+}
+
+void
+set_fqdn(void)
+{
+ return;
+}
+
+FILE *
+open_sudoers(const char *path, int isdir, int *keepopen)
+{
+ return fopen(path, "r");
+}
+
+void
+init_envtables(void)
+{
+ return;
+}
+
+int
+set_perms(int perm)
+{
+ return 1;
+}
+
+void
+restore_perms(void)
+{
+}
+
+void
+cleanup(int gotsignal)
+{
+ if (!gotsignal) {
+ sudo_endpwent();
+ sudo_endgrent();
+ }
+}
+
+void
+print_member(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(void)
+{
+ 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(void *v1, void *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 if (m->type == ALL) {
+ fputs("ALL", stdout);
+ } else {
+ fputs(m->name, stdout);
+ }
+ }
+ putchar('\n');
+ return 0;
+}
+
+void
+print_privilege(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);
+ if (!tq_empty(&cs->runasuserlist) || !tq_empty(&cs->runasgrouplist)) {
+ fputs("(", stdout);
+ if (!tq_empty(&cs->runasuserlist)) {
+ tq_foreach_fwd(&cs->runasuserlist, m) {
+ if (m != tq_first(&cs->runasuserlist))
+ fputs(", ", stdout);
+ print_member(m);
+ }
+ } else if (tq_empty(&cs->runasgrouplist)) {
+ fputs(def_runas_default, stdout);
+ } else {
+ fputs(sudo_user.pw->pw_name, stdout);
+ }
+ if (!tq_empty(&cs->runasgrouplist)) {
+ fputs(" : ", stdout);
+ tq_foreach_fwd(&cs->runasgrouplist, m) {
+ if (m != tq_first(&cs->runasgrouplist))
+ 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(void)
+{
+ 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');
+ }
+}
+
+static int
+testsudoers_printf(int msg_type, const char *fmt, ...)
+{
+ va_list ap;
+ FILE *fp;
+
+ switch (msg_type) {
+ case SUDO_CONV_INFO_MSG:
+ fp = stdout;
+ break;
+ case SUDO_CONV_ERROR_MSG:
+ fp = stderr;
+ break;
+ default:
+ errno = EINVAL;
+ return -1;
+ }
+
+ va_start(ap, fmt);
+ vfprintf(fp, fmt, ap);
+ va_end(ap);
+
+ return 0;
+}
+
+void
+dump_sudoers(void)
+{
+ print_defaults();
+
+ putchar('\n');
+ alias_apply(print_alias, NULL);
+
+ putchar('\n');
+ print_userspecs();
+}
+
+static int testsudoers_print(const char *msg)
+{
+ return fputs(msg, stderr);
+}
+
+void
+usage(void)
+{
+ (void) fprintf(stderr, "usage: %s [-dt] [-G grfile] [-g group] [-h host] [-p pwfile] [-u user] <user> <command> [args]\n", getprogname());
+ exit(1);
+}
projects / debian / sudo / blobdiff