pidgin/pidgin

Make PurplePluginProtocolInfo definitions consistent
release-2.x.y
2020-05-20, David Woodhouse
159344ba2a49
Make PurplePluginProtocolInfo definitions consistent

Since we can't use C99 structure initialisers, we have to manually add
new NULL fields to all protocols whenever we extend the structure.

Make it slightly easier to script that, by making the current last
field (get_cb_alias) consistent in all cases. In particular, there's
no reason *not* to have the trailing comma, as most already do.

Now I can add a new field to the PRPL by doing something like this...

PROTOFILES=`grep -rl '[A-Za-z_][A-Za-z0-9_]*,[[:space:]]*/\* get_cb_alias \*/' libpurple/protocols/ `
sed '/\/\* get_cb_alias \*\//{p;s/[A-Za-z_][A-Za-
/*
* @file gtksession.c X Windows session management API
* @ingroup pidgin
*/
/* Pidgin 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 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 02111-1301 USA
*
*/
#include "internal.h"
#include "core.h"
#include "debug.h"
#include "eventloop.h"
#include "gtksession.h"
#ifdef USE_SM
#include <X11/ICE/ICElib.h>
#include <X11/SM/SMlib.h>
#include <gdk/gdkx.h>
#include <unistd.h>
#include <fcntl.h>
#include <gdk/gdk.h>
#include <gtk/gtk.h>
#define ERROR_LENGTH 512
static IceIOErrorHandler ice_installed_io_error_handler;
static SmcConn session = NULL;
static gchar *myself = NULL;
static gboolean had_first_save = FALSE;
static gboolean session_managed = FALSE;
/* ICE belt'n'braces stuff */
struct ice_connection_info {
IceConn connection;
guint input_id;
};
static void ice_process_messages(gpointer data, gint fd,
PurpleInputCondition condition) {
struct ice_connection_info *conninfo = (struct ice_connection_info*) data;
IceProcessMessagesStatus status;
/* please don't block... please! */
status = IceProcessMessages(conninfo->connection, NULL, NULL);
if (status == IceProcessMessagesIOError) {
purple_debug(PURPLE_DEBUG_INFO, "Session Management",
"ICE IO error, closing connection... ");
/* IO error, please disconnect */
IceSetShutdownNegotiation(conninfo->connection, False);
IceCloseConnection(conninfo->connection);
purple_debug(PURPLE_DEBUG_INFO, NULL, "done.\n");
/* cancel the handler */
purple_input_remove(conninfo->input_id);
}
}
static void ice_connection_watch(IceConn connection, IcePointer client_data,
Bool opening, IcePointer *watch_data) {
struct ice_connection_info *conninfo = NULL;
if (opening) {
purple_debug(PURPLE_DEBUG_INFO, "Session Management",
"Handling new ICE connection... \n");
/* ensure ICE connection is not passed to child processes */
if (fcntl(IceConnectionNumber(connection), F_SETFD, FD_CLOEXEC) != 0)
purple_debug_warning("gtksession", "couldn't set FD_CLOEXEC\n");
conninfo = g_new(struct ice_connection_info, 1);
conninfo->connection = connection;
/* watch the connection */
conninfo->input_id = purple_input_add(IceConnectionNumber(connection), PURPLE_INPUT_READ,
ice_process_messages, conninfo);
*watch_data = conninfo;
} else {
purple_debug(PURPLE_DEBUG_INFO, "Session Management",
"Handling closed ICE connection... \n");
/* get the input ID back and stop watching it */
conninfo = (struct ice_connection_info*) *watch_data;
purple_input_remove(conninfo->input_id);
g_free(conninfo);
}
purple_debug(PURPLE_DEBUG_INFO, NULL, "done.\n");
}
/* We call any handler installed before (or after) ice_init but
* avoid calling the default libICE handler which does an exit().
*
* This means we do nothing by default, which is probably correct,
* the connection will get closed by libICE
*/
static void ice_io_error_handler(IceConn connection) {
purple_debug(PURPLE_DEBUG_INFO, "Session Management",
"Handling ICE IO error... ");
if (ice_installed_io_error_handler)
(*ice_installed_io_error_handler)(connection);
purple_debug(PURPLE_DEBUG_INFO, NULL, "done.\n");
}
static void ice_init(void) {
IceIOErrorHandler default_handler;
ice_installed_io_error_handler = IceSetIOErrorHandler(NULL);
default_handler = IceSetIOErrorHandler(ice_io_error_handler);
if (ice_installed_io_error_handler == default_handler)
ice_installed_io_error_handler = NULL;
IceAddConnectionWatch(ice_connection_watch, NULL);
purple_debug(PURPLE_DEBUG_INFO, "Session Management",
"ICE initialized.\n");
}
/* my magic utility function */
static gchar **session_make_command(gchar *client_id, gchar *config_dir) {
gint i = 4;
gint j = 0;
gchar **ret;
if (client_id) i += 2;
if (config_dir) i += 2; /* we will specify purple's user dir */
ret = g_new(gchar *, i);
ret[j++] = g_strdup(myself);
if (client_id) {
ret[j++] = g_strdup("--session");
ret[j++] = g_strdup(client_id);
}
if (config_dir) {
ret[j++] = g_strdup("--config");
ret[j++] = g_strdup(config_dir);
}
ret[j++] = g_strdup("--display");
ret[j++] = g_strdup((gchar *)gdk_display_get_name(gdk_display_get_default()));
ret[j] = NULL;
return ret;
}
/* SM callback handlers */
static void session_save_yourself(SmcConn conn, SmPointer data, int save_type,
Bool shutdown, int interact_style, Bool fast) {
if (had_first_save == FALSE && save_type == SmSaveLocal &&
interact_style == SmInteractStyleNone && !shutdown &&
!fast) {
/* this is just a dry run, spit it back */
purple_debug(PURPLE_DEBUG_INFO, "Session Management",
"Received first save_yourself\n");
SmcSaveYourselfDone(conn, True);
had_first_save = TRUE;
return;
}
/* tum ti tum... don't add anything else here without *
* reading SMlib.PS from an X.org ftp server near you */
purple_debug(PURPLE_DEBUG_INFO, "Session Management",
"Received save_yourself\n");
if (save_type == SmSaveGlobal || save_type == SmSaveBoth) {
/* may as well do something ... */
/* or not -- save_prefs(); */
}
SmcSaveYourselfDone(conn, True);
}
static void session_die(SmcConn conn, SmPointer data) {
purple_debug(PURPLE_DEBUG_INFO, "Session Management",
"Received die\n");
purple_core_quit();
}
static void session_save_complete(SmcConn conn, SmPointer data) {
purple_debug(PURPLE_DEBUG_INFO, "Session Management",
"Received save_complete\n");
}
static void session_shutdown_cancelled(SmcConn conn, SmPointer data) {
purple_debug(PURPLE_DEBUG_INFO, "Session Management",
"Received shutdown_cancelled\n");
}
/* utility functions stolen from Gnome-client */
static void session_set_value(SmcConn conn, gchar *name, char *type,
int num_vals, SmPropValue *vals) {
SmProp *proplist[1];
SmProp prop;
g_return_if_fail(conn);
prop.name = name;
prop.type = type;
prop.num_vals = num_vals;
prop.vals = vals;
proplist[0] = &prop;
SmcSetProperties(conn, 1, proplist);
}
static void session_set_string(SmcConn conn, gchar *name, gchar *value) {
SmPropValue val;
g_return_if_fail(name);
val.length = strlen (value)+1;
val.value = value;
session_set_value(conn, name, SmARRAY8, 1, &val);
}
static void session_set_gchar(SmcConn conn, gchar *name, gchar value) {
SmPropValue val;
g_return_if_fail(name);
val.length = 1;
val.value = &value;
session_set_value(conn, name, SmCARD8, 1, &val);
}
static void session_set_array(SmcConn conn, gchar *name, gchar *array[]) {
gint argc;
gchar **ptr;
gint i;
SmPropValue *vals;
g_return_if_fail (name);
/* We count the number of elements in our array. */
for (ptr = array, argc = 0; *ptr ; ptr++, argc++) /* LOOP */;
/* Now initialize the 'vals' array. */
vals = g_new (SmPropValue, argc);
for (ptr = array, i = 0 ; i < argc ; ptr++, i++) {
vals[i].length = strlen (*ptr);
vals[i].value = *ptr;
}
session_set_value(conn, name, SmLISTofARRAY8, argc, vals);
g_free (vals);
}
#endif /* USE_SM */
/* setup functions */
void
pidgin_session_init(gchar *argv0, gchar *previous_id, gchar *config_dir)
{
#ifdef USE_SM
SmcCallbacks callbacks;
gchar *client_id = NULL;
gchar error[ERROR_LENGTH] = "";
gchar *tmp = NULL;
gchar **cmd = NULL;
if (session != NULL) {
/* session is already established, what the hell is going on? */
purple_debug(PURPLE_DEBUG_WARNING, "Session Management",
"Duplicated call to pidgin_session_init!\n");
return;
}
if (g_getenv("SESSION_MANAGER") == NULL) {
purple_debug(PURPLE_DEBUG_ERROR, "Session Management",
"No SESSION_MANAGER found, aborting.\n");
return;
}
ice_init();
callbacks.save_yourself.callback = session_save_yourself;
callbacks.die.callback = session_die;
callbacks.save_complete.callback = session_save_complete;
callbacks.shutdown_cancelled.callback = session_shutdown_cancelled;
callbacks.save_yourself.client_data = NULL;
callbacks.die.client_data = NULL;
callbacks.save_complete.client_data = NULL;
callbacks.shutdown_cancelled.client_data = NULL;
if (previous_id) {
purple_debug(PURPLE_DEBUG_INFO, "Session Management",
"Connecting with previous ID %s\n", previous_id);
} else {
purple_debug(PURPLE_DEBUG_INFO, "Session Management",
"Connecting with no previous ID\n");
}
session = SmcOpenConnection(NULL, "session", SmProtoMajor, SmProtoMinor, SmcSaveYourselfProcMask |
SmcDieProcMask | SmcSaveCompleteProcMask | SmcShutdownCancelledProcMask,
&callbacks, previous_id, &client_id, ERROR_LENGTH, error);
if (session == NULL) {
if (error[0] != '\0') {
purple_debug(PURPLE_DEBUG_ERROR, "Session Management",
"Connection failed with error: %s\n", error);
} else {
purple_debug(PURPLE_DEBUG_ERROR, "Session Management",
"Connetion failed with unknown error.\n");
}
return;
}
tmp = SmcVendor(session);
purple_debug(PURPLE_DEBUG_INFO, "Session Management",
"Connected to manager (%s) with client ID %s\n",
tmp, client_id);
free(tmp);
session_managed = TRUE;
gdk_set_sm_client_id(client_id);
tmp = g_get_current_dir();
session_set_string(session, SmCurrentDirectory, tmp);
g_free(tmp);
tmp = g_strdup_printf("%d", (int) getpid());
session_set_string(session, SmProcessID, tmp);
g_free(tmp);
tmp = g_strdup(g_get_user_name());
session_set_string(session, SmUserID, tmp);
g_free(tmp);
session_set_gchar(session, SmRestartStyleHint, (gchar) SmRestartIfRunning);
session_set_string(session, SmProgram, (gchar *) g_get_prgname());
myself = g_strdup(argv0);
purple_debug(PURPLE_DEBUG_MISC, "Session Management",
"Using %s as command\n", myself);
cmd = session_make_command(NULL, config_dir);
session_set_array(session, SmCloneCommand, cmd);
g_strfreev(cmd);
/* this is currently useless, but gnome-session warns 'the following applications will not
save their current status' bla bla if we don't have it and the user checks 'Save Session'
when they log out */
cmd = g_new(gchar *, 2);
cmd[0] = g_strdup("/bin/true");
cmd[1] = NULL;
session_set_array(session, SmDiscardCommand, cmd);
g_strfreev(cmd);
cmd = session_make_command(client_id, config_dir);
session_set_array(session, SmRestartCommand, cmd);
g_strfreev(cmd);
g_free(client_id);
#endif /* USE_SM */
}
void
pidgin_session_end()
{
#ifdef USE_SM
if (session == NULL) /* no session to close */
return;
SmcCloseConnection(session, 0, NULL);
purple_debug(PURPLE_DEBUG_INFO, "Session Management",
"Connection closed.\n");
#endif /* USE_SM */
}