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https://gitlab.com/apparmor/apparmor.git
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6944d137c0
The new aa-enabled program can be used as a barebones replacement for `aa-status --enabled`. It is written in C, rather than Python, which keeps its dependencies to a minimum. By default, aa-enabled prints a human-readable status of AppArmor's availability to stdout. It supports a --quiet option which allows for functionality equivalent to `aa-status --enabled`, which does not print any messages. The aa-enabled exit statuses mimic the behavior documented in the aa-status(8) man page. Signed-off-by: John Johansen <john.johansen@canonical.com> [tyhicks: Incorporated feedback from the code review process] Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
92 lines
1.9 KiB
C
92 lines
1.9 KiB
C
/*
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* Copyright (C) 2015 Canonical Ltd.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License published by the Free Software Foundation.
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*/
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#include <errno.h>
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#include <locale.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <libintl.h>
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#define _(s) gettext(s)
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#include <sys/apparmor.h>
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void print_help(const char *command)
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{
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printf(_("%s: [options]\n"
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" options:\n"
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" -q | --quiet Don't print out any messages\n"
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" -h | --help Print help\n"),
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command);
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exit(1);
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}
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/* Exit statuses and meanings are documented in the aa-enabled.pod file */
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static void exit_with_error(int saved_errno, int quiet)
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{
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int err;
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switch(saved_errno) {
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case ENOSYS:
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if (!quiet)
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printf(_("No - not available on this system.\n"));
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exit(1);
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case ECANCELED:
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if (!quiet)
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printf(_("No - disabled at boot.\n"));
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exit(1);
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case ENOENT:
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if (!quiet)
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printf(_("Maybe - policy interface not available.\n"));
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exit(3);
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case EPERM:
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case EACCES:
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if (!quiet)
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printf(_("Maybe - insufficient permissions to determine availability.\n"));
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exit(4);
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}
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if (!quiet)
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printf(_("Error - %s\n"), strerror(saved_errno));
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exit(64);
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}
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int main(int argc, char **argv)
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{
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int enabled;
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int quiet = 0;
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setlocale(LC_MESSAGES, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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if (argc > 2) {
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printf(_("unknown or incompatible options\n"));
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print_help(argv[0]);
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} else if (argc == 2) {
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if (strcmp(argv[1], "--quiet") == 0 ||
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strcmp(argv[1], "-q") == 0) {
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quiet = 1;
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} else if (strcmp(argv[1], "--help") == 0 ||
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strcmp(argv[1], "-h") == 0) {
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print_help(argv[0]);
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} else {
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printf(_("unknown option '%s'\n"), argv[1]);
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print_help(argv[0]);
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}
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}
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enabled = aa_is_enabled();
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if (!enabled)
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exit_with_error(errno, quiet);
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if (!quiet)
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printf(_("Yes\n"));
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exit(0);
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}
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