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/*
* dpkg-trigger - trigger management utility
*
* Copyright © 2007 Canonical Ltd.
* Written by Ian Jackson <ian@davenant.greenend.org.uk>
*
* 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,
* 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 dpkg; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <config.h>
#include <compat.h>
#include <dpkg/i18n.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <fnmatch.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/termios.h>
#include <fcntl.h>
#if HAVE_LOCALE_H
#include <locale.h>
#endif
#include <dpkg/dpkg.h>
#include <dpkg/dpkg-db.h>
#include <dpkg/myopt.h>
static const char *bypackage, *activate, *admindir = ADMINDIR;
static int f_noact, f_check;
static void
noawait(const struct cmdinfo *ci, const char *value)
{
bypackage = "-";
}
static const struct cmdinfo cmdinfos[] = {
{ "admindir", 0, 1, NULL, &admindir },
{ "by-package", 'f', 1, NULL, &bypackage },
{ "no-await", 0, 0, NULL, &bypackage, noawait },
{ "no-act", 0, 0, &f_noact, NULL, NULL, 1 },
{ "check-supported", 0, 0, &f_check, NULL, NULL, 1 },
{ "help", 'h', 0, NULL, NULL, helponly },
{ "version", 0, 0, NULL, NULL, versiononly },
/* UK spelling */
{ "licence", 0, 0, NULL, NULL, showcopyright },
/* US spelling */
{ "license", 0, 0, NULL, NULL, showcopyright },
{ NULL }
};
const char thisname[] = "dpkg-trigger";
const char printforhelp[] = N_(
"Type dpkg-trigger --help for help about this utility.");
void
printversion(void)
{
printf(_("Debian %s package trigger utility.\n"), thisname);
printf(_(
"This is free software; see the GNU General Public License version 2 or\n"
"later for copying conditions. There is NO warranty.\n"
"See %s --license for copyright and license details.\n"), thisname);
m_output(stdout, _("<standard output>"));
}
void
usage(void)
{
printf(_(
"Usage: %s [<options> ...] <trigger-name>\n"
" %s [<options> ...] <command>\n"
"\n"), thisname, thisname);
printf(_(
"Commands:\n"
" --check-supported Check if the running dpkg supports triggers.\n"
"\n"));
printf(_(
" -h|--help Show this help message.\n"
" --version Show the version.\n"
" --license|--licence Show the copyright licensing terms.\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"
" --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>"));
}
static int done_trig, ctrig;
static void
yespackage(const char *awname)
{
fprintf(trig_new_deferred, " %s", awname);
}
static void
tdm_add_trig_begin(const char *trig)
{
ctrig = !strcmp(trig, activate);
fputs(trig, trig_new_deferred);
if (!ctrig || done_trig)
return;
yespackage(bypackage);
done_trig = 1;
}
static void
tdm_add_package(const char *awname)
{
if (ctrig && !strcmp(awname, bypackage))
return;
yespackage(awname);
}
static void
tdm_add_trig_end(void)
{
fputc('\n', trig_new_deferred);
}
static const struct trigdefmeths tdm_add = {
tdm_add_trig_begin,
tdm_add_package,
tdm_add_trig_end
};
static void
do_check(void)
{
int uf;
uf = trigdef_update_start(tduf_nolockok, admindir);
switch (uf) {
case -1:
fprintf(stderr, _("%s: triggers data directory not yet created\n"),
thisname);
exit(1);
case -3:
fprintf(stderr, _("%s: trigger records not yet in existence\n"),
thisname);
exit(1);
case 2:
case -2:
exit(0);
default:
internerr("unknown trigdef_update_start return value '%d'", uf);
}
}
int
main(int argc, const char *const *argv)
{
jmp_buf ejbuf;
int uf;
const char *badname;
enum trigdef_updateflags tduf;
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
standard_startup(&ejbuf);
myopt(&argv, cmdinfos);
setvbuf(stdout, NULL, _IONBF, 0);
if (f_check) {
if (*argv)
badusage(_("--%s takes no arguments"),
"check-supported");
do_check();
}
if (!*argv || argv[1])
badusage(_("takes one argument, the trigger name"));
if (!bypackage) {
bypackage = getenv(MAINTSCRIPTPKGENVVAR);
if (!bypackage)
ohshit(_("dpkg-trigger must be called from a maintainer script"
" (or with a --by-package option)"));
}
if (strcmp(bypackage, "-") &&
(badname = illegal_packagename(bypackage, NULL)))
ohshit(_("dpkg-trigger: illegal awaited package name `%.250s': %.250s"),
bypackage, badname);
activate = argv[0];
if ((badname = illegal_triggername(activate)))
badusage(_("invalid trigger name `%.250s': %.250s"),
activate, badname);
trigdef = &tdm_add;
tduf = tduf_nolockok;
if (!f_noact)
tduf |= tduf_write | tduf_writeifempty;
uf = trigdef_update_start(tduf, admindir);
if (uf >= 0) {
trigdef_yylex();
if (!done_trig)
fprintf(trig_new_deferred, "%s %s\n",
activate, bypackage);
trigdef_process_done();
}
standard_shutdown();
return 0;
}
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