#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <libgen.h>
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#include <errno.h>
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#include <selinux/selinux.h>
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#include <syslog.h>
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#include <pwd.h>
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#include <string.h>
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/* Attempt to rollback the transaction. No need to check error
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codes since this is rolling back something that blew up. */
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static __attribute__ ((__noreturn__)) void rollback(int argc, char **argv)
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{
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int i;
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for (i = 1; i < argc; i++)
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security_set_boolean(argv[i],
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security_get_boolean_active(argv[i]));
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exit(1);
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}
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int main(int argc, char **argv)
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{
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int rc, i, commit = 0;
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if (is_selinux_enabled() <= 0) {
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fprintf(stderr, "%s: SELinux is disabled\n", argv[0]);
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return 1;
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}
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if (argc < 2) {
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printf("Usage: %s boolname1 [boolname2 ...]\n",
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basename(argv[0]));
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return 1;
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}
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for (i = 1; i < argc; i++) {
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printf("%s: ", argv[i]);
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rc = security_get_boolean_active(argv[i]);
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switch (rc) {
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case 1:
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if (security_set_boolean(argv[i], 0) >= 0) {
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printf("inactive\n");
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commit++;
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} else {
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printf("%s - rolling back all changes\n",
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strerror(errno));
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rollback(i, argv);
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}
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break;
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case 0:
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if (security_set_boolean(argv[i], 1) >= 0) {
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printf("active\n");
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commit++;
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} else {
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printf("%s - rolling back all changes\n",
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strerror(errno));
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rollback(i, argv);
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}
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break;
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default:
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if (errno == ENOENT)
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printf
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("Boolean does not exist - rolling back all changes.\n");
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else
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printf("%s - rolling back all changes.\n",
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strerror(errno));
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rollback(i, argv);
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break; /* Not reached. */
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}
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}
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if (commit > 0) {
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if (security_commit_booleans() < 0) {
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printf("Commit failed. (%s) No change to booleans.\n",
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strerror(errno));
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} else {
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/* syslog all the changes */
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struct passwd *pwd = getpwuid(getuid());
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for (i = 1; i < argc; i++) {
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if (pwd && pwd->pw_name)
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syslog(LOG_NOTICE,
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"The %s policy boolean was toggled by %s",
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argv[i], pwd->pw_name);
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else
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syslog(LOG_NOTICE,
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"The %s policy boolean was toggled by uid:%u",
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argv[i], getuid());
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}
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return 0;
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}
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}
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return 1;
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}
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