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- /*
- * dpkg-trigger - trigger management utility
- *
- * Copyright © 2007 Canonical Ltd.
- * Written by Ian Jackson <ijackson@chiark.greenend.org.uk>
- * Copyright © 2008-2014 Guillem Jover <guillem@debian.org>
- *
- * This 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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <https://www.gnu.org/licenses/>.
- */
- #include <config.h>
- #include <compat.h>
- #include <sys/types.h>
- #include <fcntl.h>
- #if HAVE_LOCALE_H
- #include <locale.h>
- #endif
- #include <string.h>
- #include <unistd.h>
- #include <stdlib.h>
- #include <stdio.h>
- #include <dpkg/i18n.h>
- #include <dpkg/dpkg.h>
- #include <dpkg/dpkg-db.h>
- #include <dpkg/options.h>
- #include <dpkg/trigdeferred.h>
- #include <dpkg/triglib.h>
- #include <dpkg/pkg-spec.h>
- static const char printforhelp[] = N_(
- "Type dpkg-trigger --help for help about this utility.");
- static void DPKG_ATTR_NORET
- printversion(const struct cmdinfo *ci, const char *value)
- {
- printf(_("Debian %s package trigger utility version %s.\n"),
- dpkg_get_progname(), PACKAGE_RELEASE);
- printf(_(
- "This is free software; see the GNU General Public License version 2 or\n"
- "later for copying conditions. There is NO warranty.\n"));
- m_output(stdout, _("<standard output>"));
- exit(0);
- }
- static void DPKG_ATTR_NORET
- usage(const struct cmdinfo *ci, const char *value)
- {
- printf(_(
- "Usage: %s [<options> ...] <trigger-name>\n"
- " %s [<options> ...] <command>\n"
- "\n"), dpkg_get_progname(), dpkg_get_progname());
- printf(_(
- "Commands:\n"
- " --check-supported Check if the running dpkg supports triggers.\n"
- "\n"));
- printf(_(
- " -?, --help Show this help message.\n"
- " --version Show the version.\n"
- "\n"));
- printf(_(
- "Options:\n"
- " --admindir=<directory> Use <directory> instead of %s.\n"
- " --by-package=<package> Override trigger awaiter (normally set\n"
- " by dpkg).\n"
- " --await Package needs to await the processing.\n"
- " --no-await No package needs to await the processing.\n"
- " --no-act Just test - don't actually change anything.\n"
- "\n"), ADMINDIR);
- m_output(stdout, _("<standard output>"));
- exit(0);
- }
- static const char *admindir;
- static int f_noact, f_check;
- static int f_await = 1;
- static const char *bypackage, *activate;
- static bool done_trig, ctrig;
- static void
- yespackage(const char *awname)
- {
- trigdef_update_printf(" %s", awname);
- }
- static const char *
- parse_awaiter_package(void)
- {
- struct dpkg_error err = DPKG_ERROR_INIT;
- struct pkginfo *pkg;
- if (!f_await)
- bypackage = "-";
- if (bypackage == NULL) {
- const char *pkgname, *archname;
- pkgname = getenv("DPKG_MAINTSCRIPT_PACKAGE");
- archname = getenv("DPKG_MAINTSCRIPT_ARCH");
- if (pkgname == NULL || archname == NULL)
- badusage(_("must be called from a maintainer script"
- " (or with a --by-package option)"));
- pkg = pkg_spec_find_pkg(pkgname, archname, &err);
- } else if (strcmp(bypackage, "-") == 0) {
- pkg = NULL;
- } else {
- pkg = pkg_spec_parse_pkg(bypackage, &err);
- }
- /* Normalize the bypackage name if there was no error. */
- if (pkg)
- bypackage = pkg_name(pkg, pnaw_nonambig);
- return err.str;
- }
- static void
- tdm_add_trig_begin(const char *trig)
- {
- ctrig = strcmp(trig, activate) == 0;
- trigdef_update_printf("%s", trig);
- if (!ctrig || done_trig)
- return;
- yespackage(bypackage);
- done_trig = true;
- }
- static void
- tdm_add_package(const char *awname)
- {
- if (ctrig && strcmp(awname, bypackage) == 0)
- return;
- yespackage(awname);
- }
- static void
- tdm_add_trig_end(void)
- {
- trigdef_update_printf("\n");
- }
- static const struct trigdefmeths tdm_add = {
- .trig_begin = tdm_add_trig_begin,
- .package = tdm_add_package,
- .trig_end = tdm_add_trig_end,
- };
- static int
- do_check(void)
- {
- enum trigdef_update_status uf;
- uf = trigdef_update_start(TDUF_NO_LOCK_OK);
- switch (uf) {
- case TDUS_ERROR_NO_DIR:
- notice(_("triggers data directory not yet created"));
- return 1;
- case TDUS_ERROR_NO_DEFERRED:
- notice(_("trigger records not yet in existence"));
- return 1;
- case TDUS_OK:
- case TDUS_ERROR_EMPTY_DEFERRED:
- return 0;
- default:
- internerr("unknown trigdef_update_start return value '%d'", uf);
- }
- }
- static const struct cmdinfo cmdinfos[] = {
- { "admindir", 0, 1, NULL, &admindir },
- { "by-package", 'f', 1, NULL, &bypackage },
- { "await", 0, 0, &f_await, NULL, NULL, 1 },
- { "no-await", 0, 0, &f_await, NULL, NULL, 0 },
- { "no-act", 0, 0, &f_noact, NULL, NULL, 1 },
- { "check-supported", 0, 0, &f_check, NULL, NULL, 1 },
- { "help", '?', 0, NULL, NULL, usage },
- { "version", 0, 0, NULL, NULL, printversion },
- { NULL }
- };
- int
- main(int argc, const char *const *argv)
- {
- const char *badname;
- enum trigdef_update_flags tduf;
- enum trigdef_update_status tdus;
- dpkg_locales_init(PACKAGE);
- dpkg_program_init("dpkg-trigger");
- dpkg_options_parse(&argv, cmdinfos, printforhelp);
- admindir = dpkg_db_set_dir(admindir);
- if (f_check) {
- if (*argv)
- badusage(_("--%s takes no arguments"),
- "check-supported");
- return do_check();
- }
- if (!*argv || argv[1])
- badusage(_("takes one argument, the trigger name"));
- badname = parse_awaiter_package();
- if (badname)
- badusage(_("illegal awaited package name '%.250s': %.250s"),
- bypackage, badname);
- activate = argv[0];
- badname = trig_name_is_illegal(activate);
- if (badname)
- badusage(_("invalid trigger name '%.250s': %.250s"),
- activate, badname);
- trigdef_set_methods(&tdm_add);
- tduf = TDUF_NO_LOCK_OK;
- if (!f_noact)
- tduf |= TDUF_WRITE | TDUF_WRITE_IF_EMPTY;
- tdus = trigdef_update_start(tduf);
- if (tdus >= 0) {
- trigdef_parse();
- if (!done_trig)
- trigdef_update_printf("%s %s\n", activate, bypackage);
- trigdef_process_done();
- }
- dpkg_program_done();
- return 0;
- }
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