--- /dev/null
+/*
+ * Copyright (c) 2010-2012 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.
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <netinet/in.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
+# if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
+# include <memory.h>
+# endif
+# 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 */
+#include <grp.h>
+#include <pwd.h>
+#include <setjmp.h>
+
+#include "sudoers.h"
+#include "sudoers_version.h"
+#include "interfaces.h"
+
+/*
+ * Info passed in from the sudo front-end.
+ */
+struct sudoers_policy_open_info {
+ char * const *settings;
+ char * const *user_info;
+ char * const *plugin_args;
+};
+
+/*
+ * Command execution args to be filled in: argv, envp and command info.
+ */
+struct sudoers_exec_args {
+ char ***argv;
+ char ***envp;
+ char ***info;
+};
+
+static int sudo_version;
+static const char *interfaces_string;
+
+#ifdef HAVE_BSD_AUTH_H
+extern char *login_style;
+#endif /* HAVE_BSD_AUTH_H */
+
+extern sigjmp_buf error_jmp;
+
+/*
+ * Deserialize args, settings and user_info arrays.
+ * Fills in struct sudo_user and other common sudoers state.
+ */
+int
+sudoers_policy_deserialize_info(void *v, char **runas_user, char **runas_group)
+{
+ struct sudoers_policy_open_info *info = v;
+ char * const *cur;
+ const char *p, *groups = NULL;
+ const char *debug_flags = NULL;
+ int flags = 0;
+ debug_decl(sudoers_policy_deserialize_info, SUDO_DEBUG_PLUGIN)
+
+#define MATCHES(s, v) (strncmp(s, v, sizeof(v) - 1) == 0)
+
+ /* Parse sudo.conf plugin args. */
+ if (info->plugin_args != NULL) {
+ for (cur = info->plugin_args; *cur != NULL; cur++) {
+ if (MATCHES(*cur, "sudoers_file=")) {
+ sudoers_file = *cur + sizeof("sudoers_file=") - 1;
+ continue;
+ }
+ if (MATCHES(*cur, "sudoers_uid=")) {
+ sudoers_uid = (uid_t) atoi(*cur + sizeof("sudoers_uid=") - 1);
+ continue;
+ }
+ if (MATCHES(*cur, "sudoers_gid=")) {
+ sudoers_gid = (gid_t) atoi(*cur + sizeof("sudoers_gid=") - 1);
+ continue;
+ }
+ if (MATCHES(*cur, "sudoers_mode=")) {
+ sudoers_mode = (mode_t) strtol(*cur + sizeof("sudoers_mode=") - 1,
+ NULL, 8);
+ continue;
+ }
+ }
+ }
+
+ /* Parse command line settings. */
+ user_closefrom = -1;
+ for (cur = info->settings; *cur != NULL; cur++) {
+ if (MATCHES(*cur, "closefrom=")) {
+ user_closefrom = atoi(*cur + sizeof("closefrom=") - 1);
+ continue;
+ }
+ if (MATCHES(*cur, "debug_flags=")) {
+ debug_flags = *cur + sizeof("debug_flags=") - 1;
+ continue;
+ }
+ if (MATCHES(*cur, "runas_user=")) {
+ *runas_user = *cur + sizeof("runas_user=") - 1;
+ sudo_user.flags |= RUNAS_USER_SPECIFIED;
+ continue;
+ }
+ if (MATCHES(*cur, "runas_group=")) {
+ *runas_group = *cur + sizeof("runas_group=") - 1;
+ sudo_user.flags |= RUNAS_GROUP_SPECIFIED;
+ continue;
+ }
+ if (MATCHES(*cur, "prompt=")) {
+ user_prompt = *cur + sizeof("prompt=") - 1;
+ def_passprompt_override = true;
+ continue;
+ }
+ if (MATCHES(*cur, "set_home=")) {
+ if (atobool(*cur + sizeof("set_home=") - 1) == true)
+ SET(flags, MODE_RESET_HOME);
+ continue;
+ }
+ if (MATCHES(*cur, "preserve_environment=")) {
+ if (atobool(*cur + sizeof("preserve_environment=") - 1) == true)
+ SET(flags, MODE_PRESERVE_ENV);
+ continue;
+ }
+ if (MATCHES(*cur, "run_shell=")) {
+ if (atobool(*cur + sizeof("run_shell=") - 1) == true)
+ SET(flags, MODE_SHELL);
+ continue;
+ }
+ if (MATCHES(*cur, "login_shell=")) {
+ if (atobool(*cur + sizeof("login_shell=") - 1) == true) {
+ SET(flags, MODE_LOGIN_SHELL);
+ def_env_reset = true;
+ }
+ continue;
+ }
+ if (MATCHES(*cur, "implied_shell=")) {
+ if (atobool(*cur + sizeof("implied_shell=") - 1) == true)
+ SET(flags, MODE_IMPLIED_SHELL);
+ continue;
+ }
+ if (MATCHES(*cur, "preserve_groups=")) {
+ if (atobool(*cur + sizeof("preserve_groups=") - 1) == true)
+ SET(flags, MODE_PRESERVE_GROUPS);
+ continue;
+ }
+ if (MATCHES(*cur, "ignore_ticket=")) {
+ if (atobool(*cur + sizeof("ignore_ticket=") - 1) == true)
+ SET(flags, MODE_IGNORE_TICKET);
+ continue;
+ }
+ if (MATCHES(*cur, "noninteractive=")) {
+ if (atobool(*cur + sizeof("noninteractive=") - 1) == true)
+ SET(flags, MODE_NONINTERACTIVE);
+ continue;
+ }
+ if (MATCHES(*cur, "sudoedit=")) {
+ if (atobool(*cur + sizeof("sudoedit=") - 1) == true)
+ SET(flags, MODE_EDIT);
+ continue;
+ }
+ if (MATCHES(*cur, "login_class=")) {
+ login_class = *cur + sizeof("login_class=") - 1;
+ def_use_loginclass = true;
+ continue;
+ }
+#ifdef HAVE_PRIV_SET
+ if (MATCHES(*cur, "runas_privs=")) {
+ def_privs = *cur + sizeof("runas_privs=") - 1;
+ continue;
+ }
+ if (MATCHES(*cur, "runas_limitprivs=")) {
+ def_limitprivs = *cur + sizeof("runas_limitprivs=") - 1;
+ continue;
+ }
+#endif /* HAVE_PRIV_SET */
+#ifdef HAVE_SELINUX
+ if (MATCHES(*cur, "selinux_role=")) {
+ user_role = *cur + sizeof("selinux_role=") - 1;
+ continue;
+ }
+ if (MATCHES(*cur, "selinux_type=")) {
+ user_type = *cur + sizeof("selinux_type=") - 1;
+ continue;
+ }
+#endif /* HAVE_SELINUX */
+#ifdef HAVE_BSD_AUTH_H
+ if (MATCHES(*cur, "bsdauth_type=")) {
+ login_style = *cur + sizeof("bsdauth_type=") - 1;
+ continue;
+ }
+#endif /* HAVE_BSD_AUTH_H */
+#if !defined(HAVE_GETPROGNAME) && !defined(HAVE___PROGNAME)
+ if (MATCHES(*cur, "progname=")) {
+ setprogname(*cur + sizeof("progname=") - 1);
+ continue;
+ }
+#endif
+ if (MATCHES(*cur, "network_addrs=")) {
+ interfaces_string = *cur + sizeof("network_addrs=") - 1;
+ set_interfaces(interfaces_string);
+ continue;
+ }
+ }
+
+ for (cur = info->user_info; *cur != NULL; cur++) {
+ if (MATCHES(*cur, "user=")) {
+ user_name = estrdup(*cur + sizeof("user=") - 1);
+ continue;
+ }
+ if (MATCHES(*cur, "uid=")) {
+ user_uid = (uid_t) atoi(*cur + sizeof("uid=") - 1);
+ continue;
+ }
+ if (MATCHES(*cur, "gid=")) {
+ p = *cur + sizeof("gid=") - 1;
+ user_gid = (gid_t) atoi(p);
+ continue;
+ }
+ if (MATCHES(*cur, "groups=")) {
+ groups = *cur + sizeof("groups=") - 1;
+ continue;
+ }
+ if (MATCHES(*cur, "cwd=")) {
+ user_cwd = estrdup(*cur + sizeof("cwd=") - 1);
+ continue;
+ }
+ if (MATCHES(*cur, "tty=")) {
+ user_tty = user_ttypath = estrdup(*cur + sizeof("tty=") - 1);
+ if (strncmp(user_tty, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
+ user_tty += sizeof(_PATH_DEV) - 1;
+ continue;
+ }
+ if (MATCHES(*cur, "host=")) {
+ user_host = user_shost = estrdup(*cur + sizeof("host=") - 1);
+ if ((p = strchr(user_host, '.')))
+ user_shost = estrndup(user_host, (size_t)(p - user_host));
+ continue;
+ }
+ if (MATCHES(*cur, "lines=")) {
+ sudo_user.lines = atoi(*cur + sizeof("lines=") - 1);
+ continue;
+ }
+ if (MATCHES(*cur, "cols=")) {
+ sudo_user.cols = atoi(*cur + sizeof("cols=") - 1);
+ continue;
+ }
+ }
+ if (user_cwd == NULL)
+ user_cwd = "unknown";
+ if (user_tty == NULL)
+ user_tty = "unknown"; /* user_ttypath remains NULL */
+
+ if (groups != NULL && groups[0] != '\0') {
+ const char *cp;
+ GETGROUPS_T *gids;
+ int ngids;
+
+ /* Count number of groups, including passwd gid. */
+ ngids = 2;
+ for (cp = groups; *cp != '\0'; cp++) {
+ if (*cp == ',')
+ ngids++;
+ }
+
+ /* The first gid in the list is the passwd group gid. */
+ gids = emalloc2(ngids, sizeof(GETGROUPS_T));
+ gids[0] = user_gid;
+ ngids = 1;
+ cp = groups;
+ for (;;) {
+ gids[ngids] = atoi(cp);
+ if (gids[0] != gids[ngids])
+ ngids++;
+ cp = strchr(cp, ',');
+ if (cp == NULL)
+ break;
+ cp++; /* skip over comma */
+ }
+ user_gids = gids;
+ user_ngids = ngids;
+ }
+
+ /* Setup debugging if indicated. */
+ if (debug_flags != NULL) {
+ sudo_debug_init(NULL, debug_flags);
+ for (cur = info->settings; *cur != NULL; cur++)
+ sudo_debug_printf(SUDO_DEBUG_INFO, "settings: %s", *cur);
+ for (cur = info->user_info; *cur != NULL; cur++)
+ sudo_debug_printf(SUDO_DEBUG_INFO, "user_info: %s", *cur);
+ }
+
+#undef MATCHES
+ debug_return_int(flags);
+}
+
+/*
+ * Setup the execution environment.
+ * Builds up the command_info list and sets argv and envp.
+ * Returns 1 on success and -1 on error.
+ */
+int
+sudoers_policy_exec_setup(char *argv[], char *envp[], mode_t cmnd_umask,
+ char *iolog_path, void *v)
+{
+ struct sudoers_exec_args *exec_args = v;
+ char **command_info;
+ int info_len = 0;
+ debug_decl(sudoers_policy_exec_setup, SUDO_DEBUG_PLUGIN)
+
+ /* Increase the length of command_info as needed, it is *not* checked. */
+ command_info = ecalloc(32, sizeof(char **));
+
+ command_info[info_len++] = fmt_string("command", safe_cmnd);
+ if (def_log_input || def_log_output) {
+ if (iolog_path)
+ command_info[info_len++] = iolog_path;
+ if (def_log_input) {
+ command_info[info_len++] = estrdup("iolog_stdin=true");
+ command_info[info_len++] = estrdup("iolog_ttyin=true");
+ }
+ if (def_log_output) {
+ command_info[info_len++] = estrdup("iolog_stdout=true");
+ command_info[info_len++] = estrdup("iolog_stderr=true");
+ command_info[info_len++] = estrdup("iolog_ttyout=true");
+ }
+ if (def_compress_io) {
+ command_info[info_len++] = estrdup("iolog_compress=true");
+ }
+ }
+ if (ISSET(sudo_mode, MODE_EDIT))
+ command_info[info_len++] = estrdup("sudoedit=true");
+ if (ISSET(sudo_mode, MODE_LOGIN_SHELL)) {
+ /* Set cwd to run user's homedir. */
+ command_info[info_len++] = fmt_string("cwd", runas_pw->pw_dir);
+ }
+ if (def_stay_setuid) {
+ easprintf(&command_info[info_len++], "runas_uid=%u",
+ (unsigned int)user_uid);
+ easprintf(&command_info[info_len++], "runas_gid=%u",
+ (unsigned int)user_gid);
+ easprintf(&command_info[info_len++], "runas_euid=%u",
+ (unsigned int)runas_pw->pw_uid);
+ easprintf(&command_info[info_len++], "runas_egid=%u",
+ runas_gr ? (unsigned int)runas_gr->gr_gid :
+ (unsigned int)runas_pw->pw_gid);
+ } else {
+ easprintf(&command_info[info_len++], "runas_uid=%u",
+ (unsigned int)runas_pw->pw_uid);
+ easprintf(&command_info[info_len++], "runas_gid=%u",
+ runas_gr ? (unsigned int)runas_gr->gr_gid :
+ (unsigned int)runas_pw->pw_gid);
+ }
+ if (def_preserve_groups) {
+ command_info[info_len++] = "preserve_groups=true";
+ } else {
+ int i, len;
+ gid_t egid;
+ size_t glsize;
+ char *cp, *gid_list;
+ struct group_list *grlist = sudo_get_grlist(runas_pw);
+
+ /* We reserve an extra spot in the list for the effective gid. */
+ glsize = sizeof("runas_groups=") - 1 +
+ ((grlist->ngids + 1) * (MAX_UID_T_LEN + 1));
+ gid_list = emalloc(glsize);
+ memcpy(gid_list, "runas_groups=", sizeof("runas_groups=") - 1);
+ cp = gid_list + sizeof("runas_groups=") - 1;
+
+ /* On BSD systems the effective gid is the first group in the list. */
+ egid = runas_gr ? (unsigned int)runas_gr->gr_gid :
+ (unsigned int)runas_pw->pw_gid;
+ len = snprintf(cp, glsize - (cp - gid_list), "%u", egid);
+ if (len < 0 || len >= glsize - (cp - gid_list))
+ errorx(1, _("internal error, %s overflow"), "runas_groups");
+ cp += len;
+ for (i = 0; i < grlist->ngids; i++) {
+ if (grlist->gids[i] != egid) {
+ len = snprintf(cp, glsize - (cp - gid_list), ",%u",
+ (unsigned int) grlist->gids[i]);
+ if (len < 0 || len >= glsize - (cp - gid_list))
+ errorx(1, _("internal error, %s overflow"), "runas_groups");
+ cp += len;
+ }
+ }
+ command_info[info_len++] = gid_list;
+ sudo_grlist_delref(grlist);
+ }
+ if (def_closefrom >= 0)
+ easprintf(&command_info[info_len++], "closefrom=%d", def_closefrom);
+ if (def_noexec)
+ command_info[info_len++] = estrdup("noexec=true");
+ if (def_set_utmp)
+ command_info[info_len++] = estrdup("set_utmp=true");
+ if (def_use_pty)
+ command_info[info_len++] = estrdup("use_pty=true");
+ if (def_utmp_runas)
+ command_info[info_len++] = fmt_string("utmp_user", runas_pw->pw_name);
+ if (cmnd_umask != 0777)
+ easprintf(&command_info[info_len++], "umask=0%o", (unsigned int)cmnd_umask);
+#ifdef HAVE_LOGIN_CAP_H
+ if (def_use_loginclass)
+ command_info[info_len++] = fmt_string("login_class", login_class);
+#endif /* HAVE_LOGIN_CAP_H */
+#ifdef HAVE_SELINUX
+ if (user_role != NULL)
+ command_info[info_len++] = fmt_string("selinux_role", user_role);
+ if (user_type != NULL)
+ command_info[info_len++] = fmt_string("selinux_type", user_type);
+#endif /* HAVE_SELINUX */
+#ifdef HAVE_PRIV_SET
+ if (runas_privs != NULL)
+ command_info[info_len++] = fmt_string("runas_privs", runas_privs);
+ if (runas_limitprivs != NULL)
+ command_info[info_len++] = fmt_string("runas_limitprivs", runas_limitprivs);
+#endif /* HAVE_SELINUX */
+
+ /* Fill in exec environment info */
+ *(exec_args->argv) = argv;
+ *(exec_args->envp) = envp;
+ *(exec_args->info) = command_info;
+
+ debug_return_bool(true);
+}
+
+static int
+sudoers_policy_open(unsigned int version, sudo_conv_t conversation,
+ sudo_printf_t plugin_printf, char * const settings[],
+ char * const user_info[], char * const envp[], char * const args[])
+{
+ struct sudoers_policy_open_info info;
+ debug_decl(sudoers_policy_open, SUDO_DEBUG_PLUGIN)
+
+ sudo_version = version;
+ if (!sudo_conv)
+ sudo_conv = conversation;
+ if (!sudo_printf)
+ sudo_printf = plugin_printf;
+
+ /* Plugin args are only specified for API version 1.2 and higher. */
+ if (sudo_version < SUDO_API_MKVERSION(1, 2))
+ args = NULL;
+
+ if (sigsetjmp(error_jmp, 1)) {
+ /* called via error(), errorx() or log_fatal() */
+ rewind_perms();
+ debug_return_bool(-1);
+ }
+
+ /* Call the sudoers init function. */
+ info.settings = settings;
+ info.user_info = user_info;
+ info.plugin_args = args;
+ return sudoers_policy_init(&info, envp);
+}
+
+static void
+sudoers_policy_close(int exit_status, int error_code)
+{
+ debug_decl(sudoers_policy_close, SUDO_DEBUG_PLUGIN)
+
+ if (sigsetjmp(error_jmp, 1)) {
+ /* called via error(), errorx() or log_fatal() */
+ debug_return;
+ }
+
+ /* We do not currently log the exit status. */
+ if (error_code)
+ warningx(_("unable to execute %s: %s"), safe_cmnd, strerror(error_code));
+
+ /* Close the session we opened in sudoers_policy_init_session(). */
+ if (ISSET(sudo_mode, MODE_RUN|MODE_EDIT))
+ (void)sudo_auth_end_session(runas_pw);
+
+ /* Free remaining references to password and group entries. */
+ /* XXX - move cleanup to function in sudoers.c */
+ sudo_pw_delref(sudo_user.pw);
+ sudo_user.pw = NULL;
+ sudo_pw_delref(runas_pw);
+ runas_pw = NULL;
+ if (runas_gr != NULL) {
+ sudo_gr_delref(runas_gr);
+ runas_gr = NULL;
+ }
+ if (user_group_list != NULL) {
+ sudo_grlist_delref(user_group_list);
+ user_group_list = NULL;
+ }
+ efree(user_gids);
+ user_gids = NULL;
+
+ debug_return;
+}
+
+/*
+ * The init_session function is called before executing the command
+ * and before uid/gid changes occur.
+ * Returns 1 on success, 0 on failure and -1 on error.
+ */
+static int
+sudoers_policy_init_session(struct passwd *pwd, char **user_env[])
+{
+ debug_decl(sudoers_policy_init, SUDO_DEBUG_PLUGIN)
+
+ /* user_env is only specified for API version 1.2 and higher. */
+ if (sudo_version < SUDO_API_MKVERSION(1, 2))
+ user_env = NULL;
+
+ if (sigsetjmp(error_jmp, 1)) {
+ /* called via error(), errorx() or log_fatal() */
+ debug_return_bool(-1);
+ }
+
+ debug_return_bool(sudo_auth_begin_session(pwd, user_env));
+}
+
+static int
+sudoers_policy_check(int argc, char * const argv[], char *env_add[],
+ char **command_infop[], char **argv_out[], char **user_env_out[])
+{
+ struct sudoers_exec_args exec_args;
+ debug_decl(sudoers_policy_check, SUDO_DEBUG_PLUGIN)
+
+ if (!ISSET(sudo_mode, MODE_EDIT))
+ SET(sudo_mode, MODE_RUN);
+
+ exec_args.argv = argv_out;
+ exec_args.envp = user_env_out;
+ exec_args.info = command_infop;
+
+ debug_return_bool(sudoers_policy_main(argc, argv, 0, env_add, &exec_args));
+}
+
+static int
+sudoers_policy_validate(void)
+{
+ debug_decl(sudoers_policy_validate, SUDO_DEBUG_PLUGIN)
+
+ user_cmnd = "validate";
+ SET(sudo_mode, MODE_VALIDATE);
+
+ debug_return_bool(sudoers_policy_main(0, NULL, I_VERIFYPW, NULL, NULL));
+}
+
+static void
+sudoers_policy_invalidate(int remove)
+{
+ debug_decl(sudoers_policy_invalidate, SUDO_DEBUG_PLUGIN)
+
+ user_cmnd = "kill";
+ if (sigsetjmp(error_jmp, 1) == 0) {
+ remove_timestamp(remove);
+ sudoers_plugin_cleanup(0);
+ }
+
+ debug_return;
+}
+
+static int
+sudoers_policy_list(int argc, char * const argv[], int verbose,
+ const char *list_user)
+{
+ int rval;
+ debug_decl(sudoers_policy_list, SUDO_DEBUG_PLUGIN)
+
+ user_cmnd = "list";
+ if (argc)
+ SET(sudo_mode, MODE_CHECK);
+ else
+ SET(sudo_mode, MODE_LIST);
+ if (verbose)
+ long_list = 1;
+ if (list_user) {
+ list_pw = sudo_getpwnam(list_user);
+ if (list_pw == NULL) {
+ warningx(_("unknown user: %s"), list_user);
+ debug_return_bool(-1);
+ }
+ }
+ rval = sudoers_policy_main(argc, argv, I_LISTPW, NULL, NULL);
+ if (list_user) {
+ sudo_pw_delref(list_pw);
+ list_pw = NULL;
+ }
+
+ debug_return_bool(rval);
+}
+
+static int
+sudoers_policy_version(int verbose)
+{
+ debug_decl(sudoers_policy_version, SUDO_DEBUG_PLUGIN)
+
+ if (sigsetjmp(error_jmp, 1)) {
+ /* error recovery via error(), errorx() or log_fatal() */
+ debug_return_bool(-1);
+ }
+
+ sudo_printf(SUDO_CONV_INFO_MSG, _("Sudoers policy plugin version %s\n"),
+ PACKAGE_VERSION);
+ sudo_printf(SUDO_CONV_INFO_MSG, _("Sudoers file grammar version %d\n"),
+ SUDOERS_GRAMMAR_VERSION);
+
+ if (verbose) {
+ sudo_printf(SUDO_CONV_INFO_MSG, _("\nSudoers path: %s\n"), sudoers_file);
+#ifdef HAVE_LDAP
+# ifdef _PATH_NSSWITCH_CONF
+ sudo_printf(SUDO_CONV_INFO_MSG, _("nsswitch path: %s\n"), _PATH_NSSWITCH_CONF);
+# endif
+ sudo_printf(SUDO_CONV_INFO_MSG, _("ldap.conf path: %s\n"), _PATH_LDAP_CONF);
+ sudo_printf(SUDO_CONV_INFO_MSG, _("ldap.secret path: %s\n"), _PATH_LDAP_SECRET);
+#endif
+ dump_auth_methods();
+ dump_defaults();
+ sudo_printf(SUDO_CONV_INFO_MSG, "\n");
+ if (interfaces_string != NULL) {
+ dump_interfaces(interfaces_string);
+ sudo_printf(SUDO_CONV_INFO_MSG, "\n");
+ }
+ }
+ debug_return_bool(true);
+}
+
+static void
+sudoers_policy_register_hooks(int version, int (*register_hook)(struct sudo_hook *hook))
+{
+ struct sudo_hook hook;
+
+ memset(&hook, 0, sizeof(hook));
+ hook.hook_version = SUDO_HOOK_VERSION;
+
+ hook.hook_type = SUDO_HOOK_SETENV;
+ hook.hook_fn = sudoers_hook_setenv;
+ register_hook(&hook);
+
+ hook.hook_type = SUDO_HOOK_UNSETENV;
+ hook.hook_fn = sudoers_hook_unsetenv;
+ register_hook(&hook);
+
+ hook.hook_type = SUDO_HOOK_GETENV;
+ hook.hook_fn = sudoers_hook_getenv;
+ register_hook(&hook);
+
+ hook.hook_type = SUDO_HOOK_PUTENV;
+ hook.hook_fn = sudoers_hook_putenv;
+ register_hook(&hook);
+}
+
+__dso_public struct policy_plugin sudoers_policy = {
+ SUDO_POLICY_PLUGIN,
+ SUDO_API_VERSION,
+ sudoers_policy_open,
+ sudoers_policy_close,
+ sudoers_policy_version,
+ sudoers_policy_check,
+ sudoers_policy_list,
+ sudoers_policy_validate,
+ sudoers_policy_invalidate,
+ sudoers_policy_init_session,
+ sudoers_policy_register_hooks
+};
* 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.
- *
- * For a brief history of sudo, please see the HISTORY file included
- * with this distribution.
*/
#define _SUDO_MAIN
#ifdef HAVE_SETLOCALE
# include <locale.h>
#endif
-#include <netinet/in.h>
#include <netdb.h>
#ifdef HAVE_LOGIN_CAP_H
# include <login_cap.h>
#endif
#include "sudoers.h"
-#include "interfaces.h"
#include "sudoers_version.h"
#include "auth/sudo_auth.h"
#include "secure_path.h"
/*
* Prototypes
*/
-static void init_vars(char * const *);
+static char *find_editor(int nfiles, char **files, char ***argv_out);
+static int cb_runas_default(const char *);
static int set_cmnd(void);
+static void create_admin_success_flag(void);
+static void init_vars(char * const *);
+static void set_fqdn(void);
static void set_loginclass(struct passwd *);
-static void set_runaspw(const char *);
static void set_runasgr(const char *);
-static int cb_runas_default(const char *);
-static int sudoers_policy_version(int verbose);
-static int deserialize_info(char * const args[], char * const settings[],
- char * const user_info[]);
-static char *find_editor(int nfiles, char **files, char ***argv_out);
-static void create_admin_success_flag(void);
+static void set_runaspw(const char *);
/*
* Globals
sudo_printf_t sudo_printf;
int sudo_mode;
-static int sudo_version;
static char *prev_user;
static char *runas_user;
static char *runas_group;
static struct sudo_nss_list *snl;
-static const char *interfaces_string;
-static sigaction_t saved_sa_int, saved_sa_quit, saved_sa_tstp;
/* XXX - must be extern for audit bits of sudo_auth.c */
int NewArgc;
/* Declared here instead of plugin_error.c for static sudo builds. */
sigjmp_buf error_jmp;
-static int
-sudoers_policy_open(unsigned int version, sudo_conv_t conversation,
- sudo_printf_t plugin_printf, char * const settings[],
- char * const user_info[], char * const envp[], char * const args[])
+int
+sudoers_policy_init(void *info, char * const envp[])
{
volatile int sources = 0;
- sigaction_t sa;
- struct sudo_nss *nss;
- struct sudo_nss *nss_next;
- debug_decl(sudoers_policy_open, SUDO_DEBUG_PLUGIN)
-
- sudo_version = version;
- if (!sudo_conv)
- sudo_conv = conversation;
- if (!sudo_printf)
- sudo_printf = plugin_printf;
-
- /* Plugin args are only specified for API version 1.2 and higher. */
- if (sudo_version < SUDO_API_MKVERSION(1, 2))
- args = NULL;
-
- if (sigsetjmp(error_jmp, 1)) {
- /* called via error(), errorx() or log_fatal() */
- rewind_perms();
- debug_return_bool(-1);
- }
+ struct sudo_nss *nss, *nss_next;
+ debug_decl(sudoers_policy_init, SUDO_DEBUG_PLUGIN)
bindtextdomain("sudoers", LOCALEDIR);
- /*
- * Signal setup:
- * Ignore keyboard-generated signals so the user cannot interrupt
- * us at some point and avoid the logging.
- * Install handler to wait for children when they exit.
- */
- zero_bytes(&sa, sizeof(sa));
- sigemptyset(&sa.sa_mask);
- sa.sa_flags = SA_RESTART;
- sa.sa_handler = SIG_IGN;
- (void) sigaction(SIGINT, &sa, &saved_sa_int);
- (void) sigaction(SIGQUIT, &sa, &saved_sa_quit);
- (void) sigaction(SIGTSTP, &sa, &saved_sa_tstp);
-
sudo_setpwent();
sudo_setgrent();
/* Setup defaults data structures. */
init_defaults();
- /* Parse args, settings and user_info */
- sudo_mode = deserialize_info(args, settings, user_info);
+ /* Parse info from front-end. */
+ sudo_mode = sudoers_policy_deserialize_info(info, &runas_user, &runas_group);
init_vars(envp); /* XXX - move this later? */
* Note that if runas_group was specified without runas_user we
* defer setting runas_pw so the match routines know to ignore it.
*/
+ /* XXX - qpm4u does more here as it may have already set runas_pw */
if (runas_group != NULL) {
set_runasgr(runas_group);
if (runas_user != NULL)
debug_return_bool(true);
}
-static void
-sudoers_policy_close(int exit_status, int error_code)
-{
- debug_decl(sudoers_policy_close, SUDO_DEBUG_PLUGIN)
-
- if (sigsetjmp(error_jmp, 1)) {
- /* called via error(), errorx() or log_fatal() */
- debug_return;
- }
-
- /* We do not currently log the exit status. */
- if (error_code)
- warningx(_("unable to execute %s: %s"), safe_cmnd, strerror(error_code));
-
- /* Close the session we opened in sudoers_policy_init_session(). */
- if (ISSET(sudo_mode, MODE_RUN|MODE_EDIT))
- (void)sudo_auth_end_session(runas_pw);
-
- /* Free remaining references to password and group entries. */
- sudo_pw_delref(sudo_user.pw);
- sudo_user.pw = NULL;
- sudo_pw_delref(runas_pw);
- runas_pw = NULL;
- if (runas_gr != NULL) {
- sudo_gr_delref(runas_gr);
- runas_gr = NULL;
- }
- if (user_group_list != NULL) {
- sudo_grlist_delref(user_group_list);
- user_group_list = NULL;
- }
- efree(user_gids);
- user_gids = NULL;
-
- debug_return;
-}
-
-/*
- * The init_session function is called before executing the command
- * and before uid/gid changes occur.
- * Returns 1 on success, 0 on failure and -1 on error.
- */
-static int
-sudoers_policy_init_session(struct passwd *pwd, char **user_env[])
-{
- debug_decl(sudoers_policy_init, SUDO_DEBUG_PLUGIN)
-
- /* user_env is only specified for API version 1.2 and higher. */
- if (sudo_version < SUDO_API_MKVERSION(1, 2))
- user_env = NULL;
-
- if (sigsetjmp(error_jmp, 1)) {
- /* called via error(), errorx() or log_fatal() */
- debug_return_bool(-1);
- }
-
- debug_return_bool(sudo_auth_begin_session(pwd, user_env));
-}
-
-/*
- * Build up command_info list.
- * XXX - convert into setter function that takes care
- * of command_info, argv_out and user_env_out
- */
-static char **
-build_command_info(mode_t cmnd_umask, char *iolog_path)
-{
- char **command_info;
- int info_len = 0;
- debug_decl(build_command_info, SUDO_DEBUG_PLUGIN)
-
- /* Increase the length of command_info as needed, it is *not* checked. */
- command_info = ecalloc(32, sizeof(char **));
-
- command_info[info_len++] = fmt_string("command", safe_cmnd);
- if (def_log_input || def_log_output) {
- if (iolog_path)
- command_info[info_len++] = iolog_path;
- if (def_log_input) {
- command_info[info_len++] = estrdup("iolog_stdin=true");
- command_info[info_len++] = estrdup("iolog_ttyin=true");
- }
- if (def_log_output) {
- command_info[info_len++] = estrdup("iolog_stdout=true");
- command_info[info_len++] = estrdup("iolog_stderr=true");
- command_info[info_len++] = estrdup("iolog_ttyout=true");
- }
- if (def_compress_io) {
- command_info[info_len++] = estrdup("iolog_compress=true");
- }
- }
- if (ISSET(sudo_mode, MODE_EDIT))
- command_info[info_len++] = estrdup("sudoedit=true");
- if (ISSET(sudo_mode, MODE_LOGIN_SHELL)) {
- /* Set cwd to run user's homedir. */
- command_info[info_len++] = fmt_string("cwd", runas_pw->pw_dir);
- }
- if (def_stay_setuid) {
- easprintf(&command_info[info_len++], "runas_uid=%u",
- (unsigned int)user_uid);
- easprintf(&command_info[info_len++], "runas_gid=%u",
- (unsigned int)user_gid);
- easprintf(&command_info[info_len++], "runas_euid=%u",
- (unsigned int)runas_pw->pw_uid);
- easprintf(&command_info[info_len++], "runas_egid=%u",
- runas_gr ? (unsigned int)runas_gr->gr_gid :
- (unsigned int)runas_pw->pw_gid);
- } else {
- easprintf(&command_info[info_len++], "runas_uid=%u",
- (unsigned int)runas_pw->pw_uid);
- easprintf(&command_info[info_len++], "runas_gid=%u",
- runas_gr ? (unsigned int)runas_gr->gr_gid :
- (unsigned int)runas_pw->pw_gid);
- }
- if (def_preserve_groups) {
- command_info[info_len++] = "preserve_groups=true";
- } else {
- int i, len;
- gid_t egid;
- size_t glsize;
- char *cp, *gid_list;
- struct group_list *grlist = sudo_get_grlist(runas_pw);
-
- /* We reserve an extra spot in the list for the effective gid. */
- glsize = sizeof("runas_groups=") - 1 +
- ((grlist->ngids + 1) * (MAX_UID_T_LEN + 1));
- gid_list = emalloc(glsize);
- memcpy(gid_list, "runas_groups=", sizeof("runas_groups=") - 1);
- cp = gid_list + sizeof("runas_groups=") - 1;
-
- /* On BSD systems the effective gid is the first group in the list. */
- egid = runas_gr ? (unsigned int)runas_gr->gr_gid :
- (unsigned int)runas_pw->pw_gid;
- len = snprintf(cp, glsize - (cp - gid_list), "%u", egid);
- if (len < 0 || len >= glsize - (cp - gid_list))
- errorx(1, _("internal error, %s overflow"), "runas_groups");
- cp += len;
- for (i = 0; i < grlist->ngids; i++) {
- if (grlist->gids[i] != egid) {
- len = snprintf(cp, glsize - (cp - gid_list), ",%u",
- (unsigned int) grlist->gids[i]);
- if (len < 0 || len >= glsize - (cp - gid_list))
- errorx(1, _("internal error, %s overflow"), "runas_groups");
- cp += len;
- }
- }
- command_info[info_len++] = gid_list;
- sudo_grlist_delref(grlist);
- }
- if (def_closefrom >= 0)
- easprintf(&command_info[info_len++], "closefrom=%d", def_closefrom);
- if (def_noexec)
- command_info[info_len++] = estrdup("noexec=true");
- if (def_set_utmp)
- command_info[info_len++] = estrdup("set_utmp=true");
- if (def_use_pty)
- command_info[info_len++] = estrdup("use_pty=true");
- if (def_utmp_runas)
- command_info[info_len++] = fmt_string("utmp_user", runas_pw->pw_name);
- if (cmnd_umask != 0777)
- easprintf(&command_info[info_len++], "umask=0%o", (unsigned int)cmnd_umask);
-#ifdef HAVE_LOGIN_CAP_H
- if (def_use_loginclass)
- command_info[info_len++] = fmt_string("login_class", login_class);
-#endif /* HAVE_LOGIN_CAP_H */
-#ifdef HAVE_SELINUX
- if (user_role != NULL)
- command_info[info_len++] = fmt_string("selinux_role", user_role);
- if (user_type != NULL)
- command_info[info_len++] = fmt_string("selinux_type", user_type);
-#endif /* HAVE_SELINUX */
-#ifdef HAVE_PRIV_SET
- if (runas_privs != NULL)
- command_info[info_len++] = fmt_string("runas_privs", runas_privs);
- if (runas_limitprivs != NULL)
- command_info[info_len++] = fmt_string("runas_limitprivs", runas_limitprivs);
-#endif /* HAVE_SELINUX */
- debug_return_ptr(command_info);
-}
-
-static int
+int
sudoers_policy_main(int argc, char * const argv[], int pwflag, char *env_add[],
- char **command_infop[], char **argv_out[], char **user_env_out[])
+ void *closure)
{
char **edit_argv = NULL;
char *iolog_path = NULL;
struct sudo_nss *nss;
int cmnd_status = -1, validated;
volatile int rval = true;
+ sigaction_t sa, saved_sa_int, saved_sa_quit, saved_sa_tstp;
debug_decl(sudoers_policy_main, SUDO_DEBUG_PLUGIN)
+ /*
+ * Signal setup:
+ * Ignore keyboard-generated signals so the user cannot interrupt
+ * us at some point and avoid the logging.
+ * XXX - just block signals for critical sections (logging/auditing)
+ */
+ zero_bytes(&sa, sizeof(sa));
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = SA_RESTART;
+ sa.sa_handler = SIG_IGN;
+ (void) sigaction(SIGINT, &sa, &saved_sa_int);
+ (void) sigaction(SIGQUIT, &sa, &saved_sa_quit);
+ (void) sigaction(SIGTSTP, &sa, &saved_sa_tstp);
+
+ /* XXX - would like to move this to policy.c but need the cleanup. */
if (sigsetjmp(error_jmp, 1)) {
/* error recovery via error(), errorx() or log_fatal() */
rval = -1;
/* Insert user-specified environment variables. */
insert_env_vars(sudo_user.env_vars);
- /* Restore signal handlers before we exec. */
- (void) sigaction(SIGINT, &saved_sa_int, NULL);
- (void) sigaction(SIGQUIT, &saved_sa_quit, NULL);
- (void) sigaction(SIGTSTP, &saved_sa_tstp, NULL);
-
if (ISSET(sudo_mode, MODE_EDIT)) {
efree(safe_cmnd);
safe_cmnd = find_editor(NewArgc - 1, NewArgv + 1, &edit_argv);
/* Must audit before uid change. */
audit_success(NewArgv);
- /* XXX - use a setter that is passed instead of setting
- command_infop, argv_out and user_env_out directly */
- *command_infop = build_command_info(cmnd_umask, iolog_path);
-
- *argv_out = edit_argv ? edit_argv : NewArgv;
+ /* Setup execution environment to pass back to front-end. */
+ rval = sudoers_policy_exec_setup(edit_argv ? edit_argv : NewArgv,
+ env_get(), cmnd_umask, iolog_path, closure);
- /* Get private version of the environment and zero out stashed copy. */
- *user_env_out = env_get();
+ /* Zero out stashed copy of environment, it is owned by the front-end. */
env_init(NULL);
goto done;
done:
rewind_perms();
+ /* Restore signal handlers before we exec. */
+ (void) sigaction(SIGINT, &saved_sa_int, NULL);
+ (void) sigaction(SIGQUIT, &saved_sa_quit, NULL);
+ (void) sigaction(SIGTSTP, &saved_sa_tstp, NULL);
+
/* Close the password and group files and free up memory. */
sudo_endpwent();
sudo_endgrent();
debug_return_bool(rval);
}
-static int
-sudoers_policy_check(int argc, char * const argv[], char *env_add[],
- char **command_infop[], char **argv_out[], char **user_env_out[])
-{
- debug_decl(sudoers_policy_check, SUDO_DEBUG_PLUGIN)
-
- if (!ISSET(sudo_mode, MODE_EDIT))
- SET(sudo_mode, MODE_RUN);
-
- debug_return_bool(sudoers_policy_main(argc, argv, 0, env_add, command_infop,
- argv_out, user_env_out));
-}
-
-static int
-sudoers_policy_validate(void)
-{
- debug_decl(sudoers_policy_validate, SUDO_DEBUG_PLUGIN)
-
- user_cmnd = "validate";
- SET(sudo_mode, MODE_VALIDATE);
-
- debug_return_bool(sudoers_policy_main(0, NULL, I_VERIFYPW, NULL, NULL, NULL, NULL));
-}
-
-static void
-sudoers_policy_invalidate(int remove)
-{
- debug_decl(sudoers_policy_invalidate, SUDO_DEBUG_PLUGIN)
-
- user_cmnd = "kill";
- if (sigsetjmp(error_jmp, 1) == 0) {
- remove_timestamp(remove);
- plugin_cleanup(0);
- }
-
- debug_return;
-}
-
-static int
-sudoers_policy_list(int argc, char * const argv[], int verbose,
- const char *list_user)
-{
- int rval;
- debug_decl(sudoers_policy_list, SUDO_DEBUG_PLUGIN)
-
- user_cmnd = "list";
- if (argc)
- SET(sudo_mode, MODE_CHECK);
- else
- SET(sudo_mode, MODE_LIST);
- if (verbose)
- long_list = 1;
- if (list_user) {
- list_pw = sudo_getpwnam(list_user);
- if (list_pw == NULL) {
- warningx(_("unknown user: %s"), list_user);
- debug_return_bool(-1);
- }
- }
- rval = sudoers_policy_main(argc, argv, I_LISTPW, NULL, NULL, NULL, NULL);
- if (list_user) {
- sudo_pw_delref(list_pw);
- list_pw = NULL;
- }
-
- debug_return_bool(rval);
-}
-
/*
- * Initialize timezone, set umask, fill in ``sudo_user'' struct and
- * load the ``interfaces'' array.
+ * Initialize timezone and fill in ``sudo_user'' struct.
*/
static void
init_vars(char * const envp[])
}
/*
- * Get a local copy of the user's struct passwd with the shadow password
- * if necessary. It is assumed that euid is 0 at this point so we
- * can read the shadow passwd file if necessary.
+ * Get a local copy of the user's struct passwd if we don't already
+ * have one.
*/
- if ((sudo_user.pw = sudo_getpwuid(user_uid)) == NULL) {
- /*
- * It is not unusual for users to place "sudo -k" in a .logout
- * file which can cause sudo to be run during reboot after the
- * YP/NIS/NIS+/LDAP/etc daemon has died.
- */
- if (sudo_mode == MODE_KILL || sudo_mode == MODE_INVALIDATE)
- errorx(1, _("unknown uid: %u"), (unsigned int) user_uid);
+ if (sudo_user.pw == NULL) {
+ if ((sudo_user.pw = sudo_getpwnam(user_name)) == NULL) {
+ /*
+ * It is not unusual for users to place "sudo -k" in a .logout
+ * file which can cause sudo to be run during reboot after the
+ * YP/NIS/NIS+/LDAP/etc daemon has died.
+ */
+ if (sudo_mode == MODE_KILL || sudo_mode == MODE_INVALIDATE)
+ errorx(1, _("unknown uid: %u"), (unsigned int) user_uid);
- /* Need to make a fake struct passwd for the call to log_fatal(). */
- sudo_user.pw = sudo_fakepwnamid(user_name, user_uid, user_gid);
- log_fatal(0, _("unknown uid: %u"), (unsigned int) user_uid);
- /* NOTREACHED */
+ /* Need to make a fake struct passwd for the call to log_fatal(). */
+ sudo_user.pw = sudo_fakepwnamid(user_name, user_uid, user_gid);
+ log_fatal(0, _("unknown uid: %u"), (unsigned int) user_uid);
+ /* NOTREACHED */
+ }
}
/*
* Look up the fully qualified domain name and set user_host and user_shost.
* Use AI_FQDN if available since "canonical" is not always the same as fqdn.
*/
-void
+static void
set_fqdn(void)
{
struct addrinfo *res0, hint;
* Cleanup hook for error()/errorx()
*/
void
-plugin_cleanup(int gotsignal)
+sudoers_plugin_cleanup(int gotsignal)
{
struct sudo_nss *nss;
if (!gotsignal) {
- debug_decl(plugin_cleanup, SUDO_DEBUG_PLUGIN)
+ debug_decl(sudoers_plugin_cleanup, SUDO_DEBUG_PLUGIN)
if (snl != NULL) {
tq_foreach_fwd(snl, nss)
nss->close(nss);
}
}
-static int
-sudoers_policy_version(int verbose)
-{
- debug_decl(sudoers_policy_version, SUDO_DEBUG_PLUGIN)
-
- if (sigsetjmp(error_jmp, 1)) {
- /* error recovery via error(), errorx() or log_fatal() */
- debug_return_bool(-1);
- }
-
- sudo_printf(SUDO_CONV_INFO_MSG, _("Sudoers policy plugin version %s\n"),
- PACKAGE_VERSION);
- sudo_printf(SUDO_CONV_INFO_MSG, _("Sudoers file grammar version %d\n"),
- SUDOERS_GRAMMAR_VERSION);
-
- if (verbose) {
- sudo_printf(SUDO_CONV_INFO_MSG, _("\nSudoers path: %s\n"), sudoers_file);
-#ifdef HAVE_LDAP
-# ifdef _PATH_NSSWITCH_CONF
- sudo_printf(SUDO_CONV_INFO_MSG, _("nsswitch path: %s\n"), _PATH_NSSWITCH_CONF);
-# endif
- sudo_printf(SUDO_CONV_INFO_MSG, _("ldap.conf path: %s\n"), _PATH_LDAP_CONF);
- sudo_printf(SUDO_CONV_INFO_MSG, _("ldap.secret path: %s\n"), _PATH_LDAP_SECRET);
-#endif
- dump_auth_methods();
- dump_defaults();
- sudo_printf(SUDO_CONV_INFO_MSG, "\n");
- if (interfaces_string != NULL) {
- dump_interfaces(interfaces_string);
- sudo_printf(SUDO_CONV_INFO_MSG, "\n");
- }
- }
- debug_return_bool(true);
-}
-
-static int
-deserialize_info(char * const args[], char * const settings[], char * const user_info[])
-{
- char * const *cur;
- const char *p, *groups = NULL;
- const char *debug_flags = NULL;
- int flags = 0;
- debug_decl(deserialize_info, SUDO_DEBUG_PLUGIN)
-
-#define MATCHES(s, v) (strncmp(s, v, sizeof(v) - 1) == 0)
-
- /* Parse sudo.conf plugin args. */
- if (args != NULL) {
- for (cur = args; *cur != NULL; cur++) {
- if (MATCHES(*cur, "sudoers_file=")) {
- sudoers_file = *cur + sizeof("sudoers_file=") - 1;
- continue;
- }
- if (MATCHES(*cur, "sudoers_uid=")) {
- sudoers_uid = (uid_t) atoi(*cur + sizeof("sudoers_uid=") - 1);
- continue;
- }
- if (MATCHES(*cur, "sudoers_gid=")) {
- sudoers_gid = (gid_t) atoi(*cur + sizeof("sudoers_gid=") - 1);
- continue;
- }
- if (MATCHES(*cur, "sudoers_mode=")) {
- sudoers_mode = (mode_t) strtol(*cur + sizeof("sudoers_mode=") - 1,
- NULL, 8);
- continue;
- }
- }
- }
-
- /* Parse command line settings. */
- user_closefrom = -1;
- for (cur = settings; *cur != NULL; cur++) {
- if (MATCHES(*cur, "closefrom=")) {
- user_closefrom = atoi(*cur + sizeof("closefrom=") - 1);
- continue;
- }
- if (MATCHES(*cur, "debug_flags=")) {
- debug_flags = *cur + sizeof("debug_flags=") - 1;
- continue;
- }
- if (MATCHES(*cur, "runas_user=")) {
- runas_user = *cur + sizeof("runas_user=") - 1;
- sudo_user.flags |= RUNAS_USER_SPECIFIED;
- continue;
- }
- if (MATCHES(*cur, "runas_group=")) {
- runas_group = *cur + sizeof("runas_group=") - 1;
- sudo_user.flags |= RUNAS_GROUP_SPECIFIED;
- continue;
- }
- if (MATCHES(*cur, "prompt=")) {
- user_prompt = *cur + sizeof("prompt=") - 1;
- def_passprompt_override = true;
- continue;
- }
- if (MATCHES(*cur, "set_home=")) {
- if (atobool(*cur + sizeof("set_home=") - 1) == true)
- SET(flags, MODE_RESET_HOME);
- continue;
- }
- if (MATCHES(*cur, "preserve_environment=")) {
- if (atobool(*cur + sizeof("preserve_environment=") - 1) == true)
- SET(flags, MODE_PRESERVE_ENV);
- continue;
- }
- if (MATCHES(*cur, "run_shell=")) {
- if (atobool(*cur + sizeof("run_shell=") - 1) == true)
- SET(flags, MODE_SHELL);
- continue;
- }
- if (MATCHES(*cur, "login_shell=")) {
- if (atobool(*cur + sizeof("login_shell=") - 1) == true) {
- SET(flags, MODE_LOGIN_SHELL);
- def_env_reset = true;
- }
- continue;
- }
- if (MATCHES(*cur, "implied_shell=")) {
- if (atobool(*cur + sizeof("implied_shell=") - 1) == true)
- SET(flags, MODE_IMPLIED_SHELL);
- continue;
- }
- if (MATCHES(*cur, "preserve_groups=")) {
- if (atobool(*cur + sizeof("preserve_groups=") - 1) == true)
- SET(flags, MODE_PRESERVE_GROUPS);
- continue;
- }
- if (MATCHES(*cur, "ignore_ticket=")) {
- if (atobool(*cur + sizeof("ignore_ticket=") - 1) == true)
- SET(flags, MODE_IGNORE_TICKET);
- continue;
- }
- if (MATCHES(*cur, "noninteractive=")) {
- if (atobool(*cur + sizeof("noninteractive=") - 1) == true)
- SET(flags, MODE_NONINTERACTIVE);
- continue;
- }
- if (MATCHES(*cur, "sudoedit=")) {
- if (atobool(*cur + sizeof("sudoedit=") - 1) == true)
- SET(flags, MODE_EDIT);
- continue;
- }
- if (MATCHES(*cur, "login_class=")) {
- login_class = *cur + sizeof("login_class=") - 1;
- def_use_loginclass = true;
- continue;
- }
-#ifdef HAVE_PRIV_SET
- if (MATCHES(*cur, "runas_privs=")) {
- def_privs = *cur + sizeof("runas_privs=") - 1;
- continue;
- }
- if (MATCHES(*cur, "runas_limitprivs=")) {
- def_limitprivs = *cur + sizeof("runas_limitprivs=") - 1;
- continue;
- }
-#endif /* HAVE_PRIV_SET */
-#ifdef HAVE_SELINUX
- if (MATCHES(*cur, "selinux_role=")) {
- user_role = *cur + sizeof("selinux_role=") - 1;
- continue;
- }
- if (MATCHES(*cur, "selinux_type=")) {
- user_type = *cur + sizeof("selinux_type=") - 1;
- continue;
- }
-#endif /* HAVE_SELINUX */
-#ifdef HAVE_BSD_AUTH_H
- if (MATCHES(*cur, "bsdauth_type=")) {
- login_style = *cur + sizeof("bsdauth_type=") - 1;
- continue;
- }
-#endif /* HAVE_BSD_AUTH_H */
-#if !defined(HAVE_GETPROGNAME) && !defined(HAVE___PROGNAME)
- if (MATCHES(*cur, "progname=")) {
- setprogname(*cur + sizeof("progname=") - 1);
- continue;
- }
-#endif
- if (MATCHES(*cur, "network_addrs=")) {
- interfaces_string = *cur + sizeof("network_addrs=") - 1;
- set_interfaces(interfaces_string);
- continue;
- }
- }
-
- for (cur = user_info; *cur != NULL; cur++) {
- if (MATCHES(*cur, "user=")) {
- user_name = estrdup(*cur + sizeof("user=") - 1);
- continue;
- }
- if (MATCHES(*cur, "uid=")) {
- user_uid = (uid_t) atoi(*cur + sizeof("uid=") - 1);
- continue;
- }
- if (MATCHES(*cur, "gid=")) {
- p = *cur + sizeof("gid=") - 1;
- user_gid = (gid_t) atoi(p);
- continue;
- }
- if (MATCHES(*cur, "groups=")) {
- groups = *cur + sizeof("groups=") - 1;
- continue;
- }
- if (MATCHES(*cur, "cwd=")) {
- user_cwd = estrdup(*cur + sizeof("cwd=") - 1);
- continue;
- }
- if (MATCHES(*cur, "tty=")) {
- user_tty = user_ttypath = estrdup(*cur + sizeof("tty=") - 1);
- if (strncmp(user_tty, _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0)
- user_tty += sizeof(_PATH_DEV) - 1;
- continue;
- }
- if (MATCHES(*cur, "host=")) {
- user_host = user_shost = estrdup(*cur + sizeof("host=") - 1);
- if ((p = strchr(user_host, '.')))
- user_shost = estrndup(user_host, (size_t)(p - user_host));
- continue;
- }
- if (MATCHES(*cur, "lines=")) {
- sudo_user.lines = atoi(*cur + sizeof("lines=") - 1);
- continue;
- }
- if (MATCHES(*cur, "cols=")) {
- sudo_user.cols = atoi(*cur + sizeof("cols=") - 1);
- continue;
- }
- }
- if (user_cwd == NULL)
- user_cwd = "unknown";
- if (user_tty == NULL)
- user_tty = "unknown"; /* user_ttypath remains NULL */
-
- if (groups != NULL && groups[0] != '\0') {
- const char *cp;
- GETGROUPS_T *gids;
- int ngids;
-
- /* Count number of groups, including passwd gid. */
- ngids = 2;
- for (cp = groups; *cp != '\0'; cp++) {
- if (*cp == ',')
- ngids++;
- }
-
- /* The first gid in the list is the passwd group gid. */
- gids = emalloc2(ngids, sizeof(GETGROUPS_T));
- gids[0] = user_gid;
- ngids = 1;
- cp = groups;
- for (;;) {
- gids[ngids] = atoi(cp);
- if (gids[0] != gids[ngids])
- ngids++;
- cp = strchr(cp, ',');
- if (cp == NULL)
- break;
- cp++; /* skip over comma */
- }
- user_gids = gids;
- user_ngids = ngids;
- }
-
- /* Setup debugging if indicated. */
- if (debug_flags != NULL) {
- sudo_debug_init(NULL, debug_flags);
- for (cur = settings; *cur != NULL; cur++)
- sudo_debug_printf(SUDO_DEBUG_INFO, "settings: %s", *cur);
- for (cur = user_info; *cur != NULL; cur++)
- sudo_debug_printf(SUDO_DEBUG_INFO, "user_info: %s", *cur);
- }
-
-#undef MATCHES
- debug_return_int(flags);
-}
-
static char *
resolve_editor(const char *ed, size_t edlen, int nfiles, char **files, char ***argv_out)
{
/* STUB */
}
#endif /* USE_ADMIN_FLAG */
-
-static void
-sudoers_policy_register_hooks(int version, int (*register_hook)(struct sudo_hook *hook))
-{
- struct sudo_hook hook;
-
- memset(&hook, 0, sizeof(hook));
- hook.hook_version = SUDO_HOOK_VERSION;
-
- hook.hook_type = SUDO_HOOK_SETENV;
- hook.hook_fn = sudoers_hook_setenv;
- register_hook(&hook);
-
- hook.hook_type = SUDO_HOOK_UNSETENV;
- hook.hook_fn = sudoers_hook_unsetenv;
- register_hook(&hook);
-
- hook.hook_type = SUDO_HOOK_GETENV;
- hook.hook_fn = sudoers_hook_getenv;
- register_hook(&hook);
-
- hook.hook_type = SUDO_HOOK_PUTENV;
- hook.hook_fn = sudoers_hook_putenv;
- register_hook(&hook);
-}
-
-__dso_public struct policy_plugin sudoers_policy = {
- SUDO_POLICY_PLUGIN,
- SUDO_API_VERSION,
- sudoers_policy_open,
- sudoers_policy_close,
- sudoers_policy_version,
- sudoers_policy_check,
- sudoers_policy_list,
- sudoers_policy_validate,
- sudoers_policy_invalidate,
- sudoers_policy_init_session,
- sudoers_policy_register_hooks
-};
projects / sudo / commitdiff