pidgin/pidgin

Start new Bonjour protocol plugin

3 months ago, Elliott Sales de Andrade
d6ed63c2508e
Start new Bonjour protocol plugin

This is mostly copied from the new XMPP protocol plugin, with icons copied from
the existing Bonjour plugin.

The id has a `-nouveau` suffix so that it won't conflict with the existing one.

Testing Done:
Ran `ninja turtles`; checked that an account with the new protocol could be added, though it doesn't do anything.

Reviewed at https://reviews.imfreedom.org/r/2915/
/*
* Purple - Internet Messaging Library
* Copyright (C) Pidgin Developers <devel@pidgin.im>
*
* Purple is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* This library 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 library 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 library; if not, see <https://www.gnu.org/licenses/>.
*/
#include <gio/gio.h>
#include <sqlite3.h>
#include "purplesqlite3.h"
/******************************************************************************
* Helpers
*****************************************************************************/
static gboolean
purple_sqlite3_run_migration(sqlite3 *db, int version, const char *migration,
GError **error)
{
char *errmsg = NULL;
char *str = NULL;
gboolean success = TRUE;
str = g_strdup_printf("BEGIN;%s;PRAGMA user_version=%d;COMMIT;", migration,
version);
sqlite3_exec(db, str, NULL, NULL, &errmsg);
if(errmsg != NULL) {
g_set_error(error, PURPLE_SQLITE3_DOMAIN, 0,
"failed to run migration: %s", errmsg);
sqlite3_free(errmsg);
sqlite3_exec(db, "ROLLBACK", NULL, NULL, &errmsg);
if(errmsg != NULL) {
g_error("failed to rollback transaction: %s", errmsg);
sqlite3_free(errmsg);
}
success = FALSE;
}
g_free(str);
return success;
}
/******************************************************************************
* Public API
*****************************************************************************/
int
purple_sqlite3_get_schema_version(sqlite3 *db, GError **error) {
sqlite3_stmt *stmt = NULL;
int version = -1;
g_return_val_if_fail(db != NULL, -1);
sqlite3_prepare_v2(db, "PRAGMA user_version", -1, &stmt, NULL);
if(stmt == NULL) {
g_set_error(error, PURPLE_SQLITE3_DOMAIN, 0,
"error while creating prepared statement: %s",
sqlite3_errmsg(db));
return -1;
}
if(sqlite3_step(stmt) == SQLITE_ROW) {
version = sqlite3_column_int(stmt, 0);
} else {
g_set_error_literal(error, PURPLE_SQLITE3_DOMAIN, 0,
"'PRAGMA user_version' didn't return a row");
sqlite3_finalize(stmt);
return -1;
}
sqlite3_finalize(stmt);
return version;
}
gboolean
purple_sqlite3_run_migrations_from_strings(sqlite3 *db,
const char *migrations[],
GError **error)
{
int current_version = 0;
guint n_migrations = 0;
g_return_val_if_fail(db != NULL, FALSE);
g_return_val_if_fail(migrations != NULL, FALSE);
/* Get the current version or bail if it failed. */
current_version = purple_sqlite3_get_schema_version(db, error);
if(current_version == -1) {
return FALSE;
}
n_migrations = g_strv_length((char **)migrations);
if((guint)current_version > n_migrations) {
g_set_error(error, PURPLE_SQLITE3_DOMAIN, 0,
"schema version %u is higher than known migrations %u",
(guint)current_version, n_migrations);
return FALSE;
}
for(int i = current_version; migrations[i] != NULL; i++) {
int version = i + 1;
if(!purple_sqlite3_run_migration(db, version, migrations[i], error)) {
return FALSE;
}
}
return TRUE;
}
gboolean
purple_sqlite3_run_migrations_from_resources(sqlite3 *db, const char *path,
const char *migrations[],
GError **error)
{
GError *local_error = NULL;
int current_version = 0;
guint n_migrations = 0;
g_return_val_if_fail(db != NULL, FALSE);
g_return_val_if_fail(path != NULL, FALSE);
g_return_val_if_fail(migrations != NULL, FALSE);
/* Get the current version or bail if it failed. */
current_version = purple_sqlite3_get_schema_version(db, error);
if(current_version == -1) {
return FALSE;
}
n_migrations = g_strv_length((char **)migrations);
if((guint)current_version > n_migrations) {
g_set_error(error, PURPLE_SQLITE3_DOMAIN, 0,
"schema version %u is higher than known migrations %u",
(guint)current_version, n_migrations);
return FALSE;
}
/* `PRAGMA user_version` starts at 0, so write our version as i + 1. We
* start iterating the list of migrations at the current version of the
* database. If the database is already up to date, then current_version
* will point us at the null terminator in the list of migrations, which
* will short circuit the for loop.
*/
for(int i = current_version; migrations[i] != NULL; i++) {
GBytes *data = NULL;
char *full_path = NULL;
const gchar *migration = NULL;
int version = i + 1;
/* Get the data from the resource */
full_path = g_build_path("/", path, migrations[i], NULL);
data = g_resources_lookup_data(full_path, G_RESOURCE_LOOKUP_FLAGS_NONE,
&local_error);
if(data == NULL || local_error != NULL) {
if(local_error == NULL) {
local_error = g_error_new(PURPLE_SQLITE3_DOMAIN, 0,
"failed to load resource %s",
full_path);
}
g_propagate_error(error, local_error);
g_clear_pointer(&data, g_bytes_unref);
g_free(full_path);
return FALSE;
}
g_free(full_path);
migration = (const char *)g_bytes_get_data(data, NULL);
if(!purple_sqlite3_run_migration(db, version, migration, error)) {
g_bytes_unref(data);
return FALSE;
}
g_bytes_unref(data);
}
return TRUE;
}