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pk-backend-databases.c
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pk-backend-databases.c
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
*
* Copyright (C) 2007 Andreas Obergrusberger <tradiaz@yahoo.de>
* Copyright (C) 2008-2010 Valeriy Lyasotskiy <onestep@ukr.net>
* Copyright (C) 2010-2011 Jonathan Conder <jonno.conder@gmail.com>
*
* Licensed under the GNU General Public License Version 2
*
* This program 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 program 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "pk-backend-alpm.h"
#include "pk-backend-config.h"
#include "pk-backend-databases.h"
#include "pk-backend-error.h"
typedef struct
{
gchar *name;
alpm_list_t *servers;
alpm_siglevel_t level;
} PkBackendRepo;
static GHashTable *disabled = NULL;
static alpm_list_t *configured = NULL;
static GHashTable *
disabled_repos_new (GError **error)
{
GHashTable *table;
GFile *file;
GFileInputStream *is;
GDataInputStream *input;
GError *e = NULL;
g_debug ("reading disabled repos from %s", PK_BACKEND_REPO_FILE);
file = g_file_new_for_path (PK_BACKEND_REPO_FILE);
is = g_file_read (file, NULL, &e);
if (is == NULL) {
g_object_unref (file);
g_propagate_error (error, e);
return NULL;
}
table = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
input = g_data_input_stream_new (G_INPUT_STREAM (is));
/* read disabled repos line by line, ignoring comments */
while (TRUE) {
gchar *line;
line = g_data_input_stream_read_line (input, NULL, NULL, &e);
if (line != NULL) {
g_strstrip (line);
} else {
break;
}
if (*line == '\0' || *line == '#') {
g_free (line);
continue;
}
g_hash_table_insert (table, line, GINT_TO_POINTER (1));
}
g_object_unref (input);
g_object_unref (is);
g_object_unref (file);
if (e != NULL) {
g_hash_table_unref (table);
g_propagate_error (error, e);
return NULL;
} else {
return table;
}
}
static void
disabled_repos_free (GHashTable *table)
{
GHashTableIter iter;
GFile *file;
GFileOutputStream *os;
GDataOutputStream *output;
const gchar *line;
g_return_if_fail (table != NULL);
g_debug ("storing disabled repos in %s", PK_BACKEND_REPO_FILE);
file = g_file_new_for_path (PK_BACKEND_REPO_FILE);
os = g_file_replace (file, NULL, FALSE, G_FILE_CREATE_NONE, NULL, NULL);
if (os == NULL) {
g_object_unref (file);
g_hash_table_unref (table);
return;
}
g_hash_table_iter_init (&iter, table);
output = g_data_output_stream_new (G_OUTPUT_STREAM (os));
/* write all disabled repos line by line */
while (g_hash_table_iter_next (&iter, (gpointer *) &line, NULL) &&
g_data_output_stream_put_string (output, line, NULL, NULL) &&
g_data_output_stream_put_byte (output, '\n', NULL, NULL));
g_object_unref (output);
g_object_unref (os);
g_object_unref (file);
g_hash_table_unref (table);
}
static gboolean
disabled_repos_configure (GHashTable *table, gboolean only_trusted,
GError **error)
{
const alpm_list_t *i;
g_return_val_if_fail (table != NULL, FALSE);
g_return_val_if_fail (alpm != NULL, FALSE);
if (alpm_unregister_all_syncdbs (alpm) < 0) {
alpm_errno_t errno = alpm_errno (alpm);
g_set_error_literal (error, ALPM_ERROR, errno,
alpm_strerror (errno));
return FALSE;
}
for (i = configured; i != NULL; i = i->next) {
PkBackendRepo *repo = (PkBackendRepo *) i->data;
alpm_siglevel_t level = repo->level;
alpm_db_t *db;
if (g_hash_table_lookup (table, repo->name) != NULL) {
/* repo is disabled */
continue;
} else if (!only_trusted) {
level &= ~ALPM_SIG_PACKAGE;
level &= ~ALPM_SIG_DATABASE;
level &= ~ALPM_SIG_USE_DEFAULT;
}
db = alpm_register_syncdb (alpm, repo->name, level);
if (db == NULL) {
alpm_errno_t errno = alpm_errno (alpm);
g_set_error (error, ALPM_ERROR, errno, "[%s]: %s",
repo->name, alpm_strerror (errno));
return FALSE;
}
alpm_db_set_servers (db, alpm_list_strdup (repo->servers));
}
return TRUE;
}
void
pk_backend_add_database (const gchar *name, alpm_list_t *servers,
alpm_siglevel_t level)
{
PkBackendRepo *repo = g_new (PkBackendRepo, 1);
g_return_if_fail (name != NULL);
repo->name = g_strdup (name);
repo->servers = alpm_list_strdup (servers);
repo->level = level;
configured = alpm_list_add (configured, repo);
}
gboolean
pk_backend_disable_signatures (PkBackend *self, GError **error)
{
g_return_val_if_fail (self != NULL, FALSE);
return disabled_repos_configure (disabled, FALSE, error);
}
gboolean
pk_backend_enable_signatures (PkBackend *self, GError **error)
{
g_return_val_if_fail (self != NULL, FALSE);
return disabled_repos_configure (disabled, TRUE, error);
}
gboolean
pk_backend_initialize_databases (PkBackend *self, GError **error)
{
g_return_val_if_fail (self != NULL, FALSE);
disabled = disabled_repos_new (error);
if (disabled == NULL) {
return FALSE;
}
if (!disabled_repos_configure (disabled, TRUE, error)) {
return FALSE;
}
return TRUE;
}
void
pk_backend_destroy_databases (PkBackend *self)
{
alpm_list_t *i;
g_return_if_fail (self != NULL);
if (disabled != NULL) {
disabled_repos_free (disabled);
}
for (i = configured; i != NULL; i = i->next) {
PkBackendRepo *repo = (PkBackendRepo *) i->data;
g_free (repo->name);
FREELIST (repo->servers);
g_free (repo);
}
alpm_list_free (configured);
}
static void
pk_backend_repo_info (PkBackend *self, const gchar *repo, gboolean enabled)
{
gchar *description;
gboolean result;
g_return_val_if_fail (self != NULL, FALSE);
g_return_val_if_fail (repo != NULL, FALSE);
description = g_strdup_printf ("[%s]", repo);
pk_backend_job_repo_detail (self, repo, description, enabled);
g_free (description);
}
static void
pk_backend_get_repo_list_thread (PkBackend *self, GVariant *params,
gpointer data)
{
const alpm_list_t *i;
GHashTableIter iter;
gpointer key, value;
g_return_val_if_fail (self != NULL, FALSE);
g_return_val_if_fail (alpm != NULL, FALSE);
g_return_val_if_fail (disabled != NULL, FALSE);
/* emit enabled repos */
for (i = alpm_get_syncdbs (alpm); i != NULL; i = i->next) {
alpm_db_t *db = (alpm_db_t *) i->data;
const gchar *repo = alpm_db_get_name (db);
if (pk_backend_cancelled (self)) {
goto out;
} else {
pk_backend_repo_info (self, repo, TRUE);
}
}
/* emit disabled repos */
g_hash_table_iter_init (&iter, disabled);
while (g_hash_table_iter_next (&iter, &key, &value)) {
const gchar *repo = (const gchar *) key;
if (pk_backend_cancelled (self)) {
goto out;
} else {
pk_backend_repo_info (self, repo, FALSE);
}
}
out:
pk_backend_finish (self, NULL);
}
void
pk_backend_get_repo_list (PkBackend *self, PkBackendJob *job, PkBitfield filters)
{
g_return_if_fail (self != NULL);
pk_backend_run (self, job, PK_STATUS_ENUM_QUERY,
pk_backend_get_repo_list_thread);
}
static void
pk_backend_repo_enable_thread (PkBackend *self, GVariant *params,
gpointer data)
{
const gchar *repo;
GError *error = NULL;
g_return_val_if_fail (self != NULL, FALSE);
g_return_val_if_fail (disabled != NULL, FALSE);
//repo = pk_backend_get_string (self, "repo_id");
g_return_val_if_fail (repo != NULL, FALSE);
if (g_hash_table_remove (disabled, repo)) {
/* reload configuration to preserve ordering */
if (disabled_repos_configure (disabled, TRUE, &error)) {
pk_backend_repo_list_changed (self);
}
} else {
int code = ALPM_ERR_DB_NOT_NULL;
g_set_error (&error, ALPM_ERROR, code, "[%s]: %s",
repo, alpm_strerror (code));
}
if (error != NULL) {
pk_backend_error (self, error);
g_error_free (error);
}
pk_backend_job_finished (self);
}
static void
pk_backend_repo_disable_thread (PkBackend *self, GVariant *params,
gpointer data)
{
const alpm_list_t *i;
const gchar *repo;
GError *error = NULL;
g_return_if_fail (self != NULL);
g_return_if_fail (alpm != NULL);
g_return_if_fail (disabled != NULL);
//repo = pk_backend_get_string (self, "repo_id");
g_return_if_fail (repo != NULL);
for (i = alpm_get_syncdbs (alpm); i != NULL; i = i->next) {
alpm_db_t *db = (alpm_db_t *) i->data;
const gchar *name = alpm_db_get_name (db);
if (g_strcmp0 (repo, name) == 0) {
if (alpm_db_unregister (db) < 0) {
alpm_errno_t errno = alpm_errno (alpm);
g_set_error (&error, ALPM_ERROR, errno,
"[%s]: %s", repo,
alpm_strerror (errno));
} else {
g_hash_table_insert (disabled, g_strdup (repo),
GINT_TO_POINTER (1));
}
break;
}
}
if (i == NULL) {
int code = ALPM_ERR_DB_NULL;
g_set_error (&error, ALPM_ERROR, code, "[%s]: %s", repo,
alpm_strerror (code));
}
if (error != NULL) {
pk_backend_error (self, error);
g_error_free (error);
}
pk_backend_job_finished (self);
}
void
pk_backend_repo_enable (PkBackend *self, PkBackendJob *job, const gchar *repo_id, gboolean enabled)
{
g_return_if_fail (self != NULL);
g_return_if_fail (repo_id != NULL);
pk_backend_job_set_status (self, PK_STATUS_ENUM_QUERY);
if (enabled) {
pk_backend_job_thread_create (self,
pk_backend_repo_enable_thread,
NULL, NULL);
} else {
pk_backend_job_thread_create (self,
pk_backend_repo_disable_thread,
NULL, NULL);
}
}