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/*
* libdpkg - Debian packaging suite library routines
* db-ctrl-access.c - package control information database
*
* Copyright © 1995 Ian Jackson <ijackson@chiark.greenend.org.uk>
* Copyright © 2011-2014 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 <sys/stat.h>
#include <errno.h>
#include <dirent.h>
#include <unistd.h>
#include <dpkg/i18n.h>
#include <dpkg/dpkg.h>
#include <dpkg/dpkg-db.h>
#include <dpkg/fsys.h>
#include <dpkg/db-ctrl.h>
#include <dpkg/debug.h>
bool
pkg_infodb_has_file(struct pkginfo *pkg, struct pkgbin *pkgbin,
const char *name)
{
const char *filename;
struct stat stab;
filename = pkg_infodb_get_file(pkg, pkgbin, name);
if (lstat(filename, &stab) == 0)
return true;
else if (errno == ENOENT)
return false;
else
ohshite(_("unable to check existence of '%.250s'"), filename);
}
void
pkg_infodb_foreach(struct pkginfo *pkg, struct pkgbin *pkgbin,
pkg_infodb_file_func *func)
{
DIR *db_dir;
struct dirent *db_de;
struct varbuf_state db_path_state;
struct varbuf db_path = VARBUF_INIT;
const char *pkgname;
enum pkg_infodb_format db_format;
/* Make sure to always read and verify the format version. */
db_format = pkg_infodb_get_format();
if (pkgbin->multiarch == PKG_MULTIARCH_SAME &&
db_format == PKG_INFODB_FORMAT_MULTIARCH)
pkgname = pkgbin_name(pkg, pkgbin, pnaw_always);
else
pkgname = pkgbin_name(pkg, pkgbin, pnaw_never);
varbuf_add_dir(&db_path, pkg_infodb_get_dir());
varbuf_end_str(&db_path);
varbuf_snapshot(&db_path, &db_path_state);
db_dir = opendir(db_path.buf);
if (!db_dir)
ohshite(_("cannot read info directory"));
push_cleanup(cu_closedir, ~0, 1, (void *)db_dir);
while ((db_de = readdir(db_dir)) != NULL) {
const char *filename, *filetype, *dot;
debug(dbg_veryverbose, "infodb foreach info file '%s'",
db_de->d_name);
/* Ignore dotfiles, including ‘.’ and ‘..’. */
if (db_de->d_name[0] == '.')
continue;
/* Ignore anything odd. */
dot = strrchr(db_de->d_name, '.');
if (dot == NULL)
continue;
/* Ignore files from other packages. */
if (strlen(pkgname) != (size_t)(dot - db_de->d_name) ||
strncmp(db_de->d_name, pkgname, dot - db_de->d_name))
continue;
debug(dbg_stupidlyverbose, "infodb foreach file this pkg");
/* Skip past the full stop. */
filetype = dot + 1;
varbuf_rollback(&db_path_state);
varbuf_add_str(&db_path, db_de->d_name);
varbuf_end_str(&db_path);
filename = db_path.buf;
func(filename, filetype);
}
pop_cleanup(ehflag_normaltidy); /* closedir */
varbuf_destroy(&db_path);
}
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