507 lines
12 KiB
C
507 lines
12 KiB
C
/* Authors: Karl MacMillan <kmacmillan@tresys.com>
|
|
* Joshua Brindle <jbrindle@tresys.com>
|
|
* Jason Tang <jtang@tresys.com>
|
|
*
|
|
* Copyright (C) 2004-2005 Tresys Technology, LLC
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation, version 2.
|
|
*/
|
|
|
|
#include <fcntl.h>
|
|
#include <getopt.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <semanage/modules.h>
|
|
|
|
enum client_modes { NO_MODE, INSTALL_M, UPGRADE_M, BASE_M, ENABLE_M, DISABLE_M, REMOVE_M,
|
|
LIST_M, RELOAD
|
|
};
|
|
/* list of modes in which one ought to commit afterwards */
|
|
static const int do_commit[] = {
|
|
0, 1, 1, 1, 1, 1, 1,
|
|
0, 0
|
|
};
|
|
|
|
struct command {
|
|
enum client_modes mode;
|
|
char *arg;
|
|
};
|
|
static struct command *commands = NULL;
|
|
static int num_commands = 0;
|
|
|
|
/* options given on command line */
|
|
static int verbose;
|
|
static int reload;
|
|
static int no_reload;
|
|
static int create_store;
|
|
static int build;
|
|
static int disable_dontaudit;
|
|
static int preserve_tunables;
|
|
|
|
static semanage_handle_t *sh = NULL;
|
|
static char *store;
|
|
|
|
extern char *optarg;
|
|
extern int optind;
|
|
|
|
static void cleanup(void)
|
|
{
|
|
while (--num_commands >= 0) {
|
|
free(commands[num_commands].arg);
|
|
}
|
|
free(commands);
|
|
}
|
|
|
|
/* Signal handlers. */
|
|
static void handle_signal(int sig_num)
|
|
{
|
|
if (sig_num == SIGINT || sig_num == SIGQUIT || sig_num == SIGTERM) {
|
|
/* catch these signals, and then drop them */
|
|
}
|
|
}
|
|
|
|
static void set_store(char *storename)
|
|
{
|
|
/* For now this only supports a store name, later on this
|
|
* should support an address for a remote connection */
|
|
|
|
if ((store = strdup(storename)) == NULL) {
|
|
fprintf(stderr, "Out of memory!\n");
|
|
goto bad;
|
|
}
|
|
|
|
return;
|
|
|
|
bad:
|
|
cleanup();
|
|
exit(1);
|
|
}
|
|
|
|
/* Establish signal handlers for the process. */
|
|
static void create_signal_handlers(void)
|
|
{
|
|
if (signal(SIGINT, handle_signal) == SIG_ERR ||
|
|
signal(SIGQUIT, handle_signal) == SIG_ERR ||
|
|
signal(SIGTERM, handle_signal) == SIG_ERR) {
|
|
fprintf(stderr, "Could not set up signal handler.\n");
|
|
exit(255);
|
|
}
|
|
}
|
|
|
|
static void usage(char *progname)
|
|
{
|
|
printf("usage: %s [options]... MODE [MODES]...\n", progname);
|
|
printf("Manage SELinux policy modules.\n");
|
|
printf("MODES:\n");
|
|
printf(" -R, --reload reload policy\n");
|
|
printf(" -B, --build build and reload policy\n");
|
|
printf(" -i,--install=MODULE_PKG install a new module\n");
|
|
printf(" -u,--upgrade=MODULE_PKG upgrade existing module\n");
|
|
printf(" -b,--base=MODULE_PKG install new base module\n");
|
|
printf(" -e,--enable=MODULE_PKG enable existing module\n");
|
|
printf(" -d,--disable=MODULE_PKG disable existing module\n");
|
|
printf(" -r,--remove=MODULE_NAME remove existing module\n");
|
|
printf
|
|
(" -l,--list-modules display list of installed modules\n");
|
|
printf("Other options:\n");
|
|
printf(" -s,--store name of the store to operate on\n");
|
|
printf(" -n,--noreload do not reload policy after commit\n");
|
|
printf(" -h,--help print this message and quit\n");
|
|
printf(" -v,--verbose be verbose\n");
|
|
printf(" -D,--disable_dontaudit Remove dontaudits from policy\n");
|
|
printf(" -P,--preserve_tunables Preserve tunables in policy\n");
|
|
printf(" -p,--path use an alternate path for the policy root\n");
|
|
}
|
|
|
|
/* Sets the global mode variable to new_mode, but only if no other
|
|
* mode has been given. */
|
|
static void set_mode(enum client_modes new_mode, char *arg)
|
|
{
|
|
struct command *c;
|
|
char *s;
|
|
if ((c = realloc(commands, sizeof(*c) * (num_commands + 1))) == NULL) {
|
|
fprintf(stderr, "Out of memory!\n");
|
|
cleanup();
|
|
exit(1);
|
|
}
|
|
commands = c;
|
|
commands[num_commands].mode = new_mode;
|
|
commands[num_commands].arg = NULL;
|
|
num_commands++;
|
|
if (arg != NULL) {
|
|
if ((s = strdup(arg)) == NULL) {
|
|
fprintf(stderr, "Out of memory!\n");
|
|
cleanup();
|
|
exit(1);
|
|
}
|
|
commands[num_commands - 1].arg = s;
|
|
}
|
|
}
|
|
|
|
/* Parse command line and set global options. */
|
|
static void parse_command_line(int argc, char **argv)
|
|
{
|
|
static struct option opts[] = {
|
|
{"store", required_argument, NULL, 's'},
|
|
{"base", required_argument, NULL, 'b'},
|
|
{"help", 0, NULL, 'h'},
|
|
{"install", required_argument, NULL, 'i'},
|
|
{"list-modules", 0, NULL, 'l'},
|
|
{"verbose", 0, NULL, 'v'},
|
|
{"enable", required_argument, NULL, 'e'},
|
|
{"disable", required_argument, NULL, 'd'},
|
|
{"remove", required_argument, NULL, 'r'},
|
|
{"upgrade", required_argument, NULL, 'u'},
|
|
{"reload", 0, NULL, 'R'},
|
|
{"noreload", 0, NULL, 'n'},
|
|
{"build", 0, NULL, 'B'},
|
|
{"disable_dontaudit", 0, NULL, 'D'},
|
|
{"preserve_tunables", 0, NULL, 'P'},
|
|
{"path", required_argument, NULL, 'p'},
|
|
{NULL, 0, NULL, 0}
|
|
};
|
|
int i;
|
|
verbose = 0;
|
|
reload = 0;
|
|
no_reload = 0;
|
|
create_store = 0;
|
|
while ((i =
|
|
getopt_long(argc, argv, "p:s:b:hi:lvqe:d:r:u:RnBDP", opts,
|
|
NULL)) != -1) {
|
|
switch (i) {
|
|
case 'b':
|
|
set_mode(BASE_M, optarg);
|
|
create_store = 1;
|
|
break;
|
|
case 'h':
|
|
usage(argv[0]);
|
|
exit(0);
|
|
case 'i':
|
|
set_mode(INSTALL_M, optarg);
|
|
break;
|
|
case 'l':
|
|
set_mode(LIST_M, NULL);
|
|
break;
|
|
case 'v':
|
|
verbose = 1;
|
|
break;
|
|
case 'e':
|
|
set_mode(ENABLE_M, optarg);
|
|
break;
|
|
case 'd':
|
|
set_mode(DISABLE_M, optarg);
|
|
break;
|
|
case 'r':
|
|
set_mode(REMOVE_M, optarg);
|
|
break;
|
|
case 'p':
|
|
semanage_set_root(optarg);
|
|
break;
|
|
case 'u':
|
|
set_mode(UPGRADE_M, optarg);
|
|
break;
|
|
case 's':
|
|
set_store(optarg);
|
|
break;
|
|
case 'R':
|
|
reload = 1;
|
|
break;
|
|
case 'n':
|
|
no_reload = 1;
|
|
break;
|
|
case 'B':
|
|
build = 1;
|
|
break;
|
|
case 'D':
|
|
disable_dontaudit = 1;
|
|
break;
|
|
case 'P':
|
|
preserve_tunables = 1;
|
|
break;
|
|
case '?':
|
|
default:{
|
|
usage(argv[0]);
|
|
exit(1);
|
|
}
|
|
}
|
|
}
|
|
if ((build || reload) && num_commands) {
|
|
fprintf(stderr,
|
|
"build or reload should not be used with other commands\n");
|
|
usage(argv[0]);
|
|
exit(1);
|
|
}
|
|
if (num_commands == 0 && reload == 0 && build == 0) {
|
|
fprintf(stderr, "At least one mode must be specified.\n");
|
|
usage(argv[0]);
|
|
exit(1);
|
|
}
|
|
|
|
if (optind < argc) {
|
|
int mode;
|
|
/* if -i/u/r was the last command treat any remaining
|
|
* arguments as args. Will allow 'semodule -i *.pp' to
|
|
* work as expected.
|
|
*/
|
|
|
|
if (commands && commands[num_commands - 1].mode == INSTALL_M) {
|
|
mode = INSTALL_M;
|
|
} else if (commands && commands[num_commands - 1].mode == UPGRADE_M) {
|
|
mode = UPGRADE_M;
|
|
} else if (commands && commands[num_commands - 1].mode == REMOVE_M) {
|
|
mode = REMOVE_M;
|
|
} else if (commands && commands[num_commands - 1].mode == ENABLE_M) {
|
|
mode = ENABLE_M;
|
|
} else if (commands && commands[num_commands - 1].mode == DISABLE_M) {
|
|
mode = DISABLE_M;
|
|
} else {
|
|
fprintf(stderr, "unknown additional arguments:\n");
|
|
while (optind < argc)
|
|
fprintf(stderr, " %s", argv[optind++]);
|
|
fprintf(stderr, "\n\n");
|
|
usage(argv[0]);
|
|
exit(1);
|
|
}
|
|
while (optind < argc)
|
|
set_mode(mode, argv[optind++]);
|
|
}
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int i, commit = 0;
|
|
int result;
|
|
int status = EXIT_FAILURE;
|
|
|
|
create_signal_handlers();
|
|
parse_command_line(argc, argv);
|
|
|
|
if (build)
|
|
commit = 1;
|
|
|
|
sh = semanage_handle_create();
|
|
if (!sh) {
|
|
fprintf(stderr, "%s: Could not create semanage handle\n",
|
|
argv[0]);
|
|
goto cleanup_nohandle;
|
|
}
|
|
|
|
if (store) {
|
|
/* Set the store we want to connect to, before connecting.
|
|
* this will always set a direct connection now, an additional
|
|
* option will need to be used later to specify a policy server
|
|
* location */
|
|
semanage_select_store(sh, store, SEMANAGE_CON_DIRECT);
|
|
}
|
|
|
|
/* if installing base module create store if necessary, for bootstrapping */
|
|
semanage_set_create_store(sh, create_store);
|
|
|
|
if (!create_store) {
|
|
if (!semanage_is_managed(sh)) {
|
|
fprintf(stderr,
|
|
"%s: SELinux policy is not managed or store cannot be accessed.\n",
|
|
argv[0]);
|
|
goto cleanup;
|
|
}
|
|
|
|
if (semanage_access_check(sh) < SEMANAGE_CAN_READ) {
|
|
fprintf(stderr, "%s: Cannot read policy store.\n",
|
|
argv[0]);
|
|
goto cleanup;
|
|
}
|
|
}
|
|
|
|
if ((result = semanage_connect(sh)) < 0) {
|
|
fprintf(stderr, "%s: Could not connect to policy handler\n",
|
|
argv[0]);
|
|
goto cleanup;
|
|
}
|
|
|
|
if (reload) {
|
|
if ((result = semanage_reload_policy(sh)) < 0) {
|
|
fprintf(stderr, "%s: Could not reload policy\n",
|
|
argv[0]);
|
|
goto cleanup;
|
|
}
|
|
}
|
|
|
|
if (build) {
|
|
if ((result = semanage_begin_transaction(sh)) < 0) {
|
|
fprintf(stderr, "%s: Could not begin transaction: %s\n",
|
|
argv[0], errno ? strerror(errno) : "");
|
|
goto cleanup;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < num_commands; i++) {
|
|
enum client_modes mode = commands[i].mode;
|
|
char *mode_arg = commands[i].arg;
|
|
switch (mode) {
|
|
case INSTALL_M:{
|
|
if (verbose) {
|
|
printf
|
|
("Attempting to install module '%s':\n",
|
|
mode_arg);
|
|
}
|
|
result =
|
|
semanage_module_install_file(sh, mode_arg);
|
|
break;
|
|
}
|
|
case UPGRADE_M:{
|
|
if (verbose) {
|
|
printf
|
|
("Attempting to upgrade module '%s':\n",
|
|
mode_arg);
|
|
}
|
|
result =
|
|
semanage_module_upgrade_file(sh, mode_arg);
|
|
break;
|
|
}
|
|
case BASE_M:{
|
|
if (verbose) {
|
|
printf
|
|
("Attempting to install base module '%s':\n",
|
|
mode_arg);
|
|
}
|
|
result =
|
|
semanage_module_install_base_file(sh, mode_arg);
|
|
break;
|
|
}
|
|
case ENABLE_M:{
|
|
if (verbose) {
|
|
printf
|
|
("Attempting to enable module '%s':\n",
|
|
mode_arg);
|
|
}
|
|
result = semanage_module_enable(sh, mode_arg);
|
|
if ( result == -2 ) {
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
case DISABLE_M:{
|
|
if (verbose) {
|
|
printf
|
|
("Attempting to disable module '%s':\n",
|
|
mode_arg);
|
|
}
|
|
result = semanage_module_disable(sh, mode_arg);
|
|
if ( result == -2 ) {
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
case REMOVE_M:{
|
|
if (verbose) {
|
|
printf
|
|
("Attempting to remove module '%s':\n",
|
|
mode_arg);
|
|
}
|
|
result = semanage_module_remove(sh, mode_arg);
|
|
if ( result == -2 ) {
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
case LIST_M:{
|
|
semanage_module_info_t *modinfo;
|
|
int num_modules;
|
|
if (verbose) {
|
|
printf
|
|
("Attempting to list active modules:\n");
|
|
}
|
|
if ((result =
|
|
semanage_module_list(sh, &modinfo,
|
|
&num_modules)) >= 0) {
|
|
int j;
|
|
if (num_modules == 0) {
|
|
printf("No modules.\n");
|
|
}
|
|
for (j = 0; j < num_modules; j++) {
|
|
semanage_module_info_t *m =
|
|
semanage_module_list_nth
|
|
(modinfo, j);
|
|
printf("%s\t%s\t%s\n",
|
|
semanage_module_get_name
|
|
(m),
|
|
semanage_module_get_version
|
|
(m),
|
|
(semanage_module_get_enabled(m) ? "" : "Disabled"));
|
|
semanage_module_info_datum_destroy
|
|
(m);
|
|
}
|
|
free(modinfo);
|
|
}
|
|
break;
|
|
}
|
|
default:{
|
|
fprintf(stderr,
|
|
"%s: Unknown mode specified.\n",
|
|
argv[0]);
|
|
usage(argv[0]);
|
|
goto cleanup;
|
|
}
|
|
}
|
|
commit += do_commit[mode];
|
|
if (result < 0) {
|
|
fprintf(stderr, "%s: Failed on %s!\n", argv[0],
|
|
mode_arg ? : "list");
|
|
goto cleanup;
|
|
} else if (verbose) {
|
|
printf("Ok: return value of %d.\n", result);
|
|
}
|
|
}
|
|
|
|
if (commit) {
|
|
if (verbose)
|
|
printf("Committing changes:\n");
|
|
if (no_reload)
|
|
semanage_set_reload(sh, 0);
|
|
if (build)
|
|
semanage_set_rebuild(sh, 1);
|
|
if (disable_dontaudit)
|
|
semanage_set_disable_dontaudit(sh, 1);
|
|
else if (build)
|
|
semanage_set_disable_dontaudit(sh, 0);
|
|
if (preserve_tunables)
|
|
semanage_set_preserve_tunables(sh, 1);
|
|
|
|
result = semanage_commit(sh);
|
|
}
|
|
|
|
if (result < 0) {
|
|
fprintf(stderr, "%s: Failed!\n", argv[0]);
|
|
goto cleanup;
|
|
} else if (commit && verbose) {
|
|
printf("Ok: transaction number %d.\n", result);
|
|
}
|
|
|
|
if (semanage_disconnect(sh) < 0) {
|
|
fprintf(stderr, "%s: Error disconnecting\n", argv[0]);
|
|
goto cleanup;
|
|
}
|
|
status = EXIT_SUCCESS;
|
|
|
|
cleanup:
|
|
if (semanage_is_connected(sh)) {
|
|
if (semanage_disconnect(sh) < 0) {
|
|
fprintf(stderr, "%s: Error disconnecting\n", argv[0]);
|
|
}
|
|
}
|
|
semanage_handle_destroy(sh);
|
|
|
|
cleanup_nohandle:
|
|
cleanup();
|
|
exit(status);
|
|
}
|