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profanity/src/xmpp/connection.c

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/*
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* connection.c
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*
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* Copyright (C) 2012 - 2014 James Booth <boothj5@gmail.com>
*
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* This file is part of Profanity.
*
* Profanity 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 3 of the License, or
* (at your option) any later version.
*
* Profanity 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 Profanity. If not, see <http://www.gnu.org/licenses/>.
*
*/
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#include <assert.h>
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#include <string.h>
#include <stdlib.h>
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#include <strophe.h>
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#include "chat_session.h"
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#include "common.h"
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#include "config/preferences.h"
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#include "jid.h"
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#include "log.h"
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#include "muc.h"
#include "profanity.h"
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#include "server_events.h"
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#include "xmpp/bookmark.h"
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#include "xmpp/capabilities.h"
#include "xmpp/connection.h"
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#include "xmpp/iq.h"
#include "xmpp/message.h"
#include "xmpp/presence.h"
#include "xmpp/roster.h"
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#include "xmpp/stanza.h"
#include "xmpp/xmpp.h"
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static struct _jabber_conn_t {
xmpp_log_t *log;
xmpp_ctx_t *ctx;
xmpp_conn_t *conn;
jabber_conn_status_t conn_status;
char *presence_message;
int priority;
int tls_disabled;
char *domain;
} jabber_conn;
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static GHashTable *available_resources;
// for auto reconnect
static struct {
char *name;
char *passwd;
} saved_account;
static struct {
char *name;
char *jid;
char *passwd;
char *altdomain;
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int port;
} saved_details;
static GTimer *reconnect_timer;
static log_level_t _get_log_level(xmpp_log_level_t xmpp_level);
static xmpp_log_level_t _get_xmpp_log_level();
static void _xmpp_file_logger(void * const userdata,
const xmpp_log_level_t level, const char * const area,
const char * const msg);
static xmpp_log_t * _xmpp_get_file_logger();
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static jabber_conn_status_t _jabber_connect(const char * const fulljid,
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const char * const passwd, const char * const altdomain, int port);
static void _jabber_reconnect(void);
static void _connection_handler(xmpp_conn_t * const conn,
const xmpp_conn_event_t status, const int error,
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xmpp_stream_error_t * const stream_error, void * const userdata);
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void _connection_free_saved_account(void);
void _connection_free_saved_details(void);
void _connection_free_session_data(void);
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static void
_jabber_init(const int disable_tls)
{
log_info("Initialising XMPP");
jabber_conn.conn_status = JABBER_STARTED;
jabber_conn.presence_message = NULL;
jabber_conn.conn = NULL;
jabber_conn.ctx = NULL;
jabber_conn.tls_disabled = disable_tls;
jabber_conn.domain = NULL;
presence_sub_requests_init();
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caps_init();
available_resources = g_hash_table_new_full(g_str_hash, g_str_equal, free,
(GDestroyNotify)resource_destroy);
xmpp_initialize();
}
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static jabber_conn_status_t
_jabber_connect_with_account(const ProfAccount * const account)
{
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assert(account != NULL);
log_info("Connecting using account: %s", account->name);
// save account name and password for reconnect
if (saved_account.name != NULL) {
free(saved_account.name);
}
saved_account.name = strdup(account->name);
if (saved_account.passwd != NULL) {
free(saved_account.passwd);
}
saved_account.passwd = strdup(account->password);
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// connect with fulljid
Jid *jidp = jid_create_from_bare_and_resource(account->jid, account->resource);
jabber_conn_status_t result =
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_jabber_connect(jidp->fulljid, account->password, account->server, account->port);
jid_destroy(jidp);
return result;
}
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static jabber_conn_status_t
_jabber_connect_with_details(const char * const jid,
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const char * const passwd, const char * const altdomain, const int port)
{
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assert(jid != NULL);
assert(passwd != NULL);
// save details for reconnect, remember name for account creating on success
saved_details.name = strdup(jid);
saved_details.passwd = strdup(passwd);
if (altdomain != NULL) {
saved_details.altdomain = strdup(altdomain);
} else {
saved_details.altdomain = NULL;
}
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if (port != 0) {
saved_details.port = port;
} else {
saved_details.port = 0;
}
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// use 'profanity' when no resourcepart in provided jid
Jid *jidp = jid_create(jid);
if (jidp->resourcepart == NULL) {
jid_destroy(jidp);
jidp = jid_create_from_bare_and_resource(jid, "profanity");
saved_details.jid = strdup(jidp->fulljid);
} else {
saved_details.jid = strdup(jid);
}
jid_destroy(jidp);
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// connect with fulljid
log_info("Connecting without account, JID: %s", saved_details.jid);
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return _jabber_connect(saved_details.jid, passwd, saved_details.altdomain, saved_details.port);
}
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static void
_jabber_disconnect(void)
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{
// if connected, send end stream and wait for response
if (jabber_conn.conn_status == JABBER_CONNECTED) {
log_info("Closing connection");
jabber_conn.conn_status = JABBER_DISCONNECTING;
xmpp_disconnect(jabber_conn.conn);
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while (jabber_get_connection_status() == JABBER_DISCONNECTING) {
jabber_process_events();
}
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_connection_free_saved_account();
_connection_free_saved_details();
_connection_free_session_data();
if (jabber_conn.conn != NULL) {
xmpp_conn_release(jabber_conn.conn);
jabber_conn.conn = NULL;
}
if (jabber_conn.ctx != NULL) {
xmpp_ctx_free(jabber_conn.ctx);
jabber_conn.ctx = NULL;
}
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}
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jabber_conn.conn_status = JABBER_STARTED;
FREE_SET_NULL(jabber_conn.presence_message);
FREE_SET_NULL(jabber_conn.domain);
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}
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static void
_jabber_shutdown(void)
{
_connection_free_saved_account();
_connection_free_saved_details();
_connection_free_session_data();
xmpp_shutdown();
}
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static void
_jabber_process_events(void)
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{
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int reconnect_sec;
switch (jabber_conn.conn_status)
{
case JABBER_CONNECTED:
case JABBER_CONNECTING:
case JABBER_DISCONNECTING:
xmpp_run_once(jabber_conn.ctx, 10);
break;
case JABBER_DISCONNECTED:
reconnect_sec = prefs_get_reconnect();
if ((reconnect_sec != 0) && (reconnect_timer != NULL)) {
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int elapsed_sec = g_timer_elapsed(reconnect_timer, NULL);
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if (elapsed_sec > reconnect_sec) {
_jabber_reconnect();
}
}
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break;
default:
break;
}
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}
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static GList *
_jabber_get_available_resources(void)
{
return g_hash_table_get_values(available_resources);
}
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static jabber_conn_status_t
_jabber_get_connection_status(void)
{
return (jabber_conn.conn_status);
}
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xmpp_conn_t *
connection_get_conn(void)
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{
return jabber_conn.conn;
}
xmpp_ctx_t *
connection_get_ctx(void)
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{
return jabber_conn.ctx;
}
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static const char *
_jabber_get_fulljid(void)
{
return xmpp_conn_get_jid(jabber_conn.conn);
}
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static const char *
_jabber_get_domain(void)
{
return jabber_conn.domain;
}
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static char *
_jabber_get_presence_message(void)
{
return jabber_conn.presence_message;
}
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static char *
_jabber_get_account_name(void)
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{
return saved_account.name;
}
void
connection_set_presence_message(const char * const message)
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{
FREE_SET_NULL(jabber_conn.presence_message);
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if (message != NULL) {
jabber_conn.presence_message = strdup(message);
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}
}
void
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connection_set_priority(const int priority)
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{
jabber_conn.priority = priority;
}
void
connection_add_available_resource(Resource *resource)
{
g_hash_table_replace(available_resources, strdup(resource->name), resource);
}
void
connection_remove_available_resource(const char * const resource)
{
g_hash_table_remove(available_resources, resource);
}
void
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_connection_free_saved_account(void)
{
FREE_SET_NULL(saved_account.name);
FREE_SET_NULL(saved_account.passwd);
}
void
_connection_free_saved_details(void)
{
FREE_SET_NULL(saved_details.name);
FREE_SET_NULL(saved_details.jid);
FREE_SET_NULL(saved_details.passwd);
FREE_SET_NULL(saved_details.altdomain);
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}
void
_connection_free_session_data(void)
{
g_hash_table_remove_all(available_resources);
chat_sessions_clear();
presence_clear_sub_requests();
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}
static jabber_conn_status_t
_jabber_connect(const char * const fulljid, const char * const passwd,
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const char * const altdomain, int port)
{
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assert(fulljid != NULL);
assert(passwd != NULL);
Jid *jid = jid_create(fulljid);
if (jid == NULL) {
log_error("Malformed JID not able to connect: %s", fulljid);
jabber_conn.conn_status = JABBER_DISCONNECTED;
return jabber_conn.conn_status;
} else if (jid->fulljid == NULL) {
log_error("Full JID required to connect, received: %s", fulljid);
jabber_conn.conn_status = JABBER_DISCONNECTED;
return jabber_conn.conn_status;
}
jid_destroy(jid);
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log_info("Connecting as %s", fulljid);
jabber_conn.log = _xmpp_get_file_logger();
if (jabber_conn.conn != NULL) {
xmpp_conn_release(jabber_conn.conn);
}
if (jabber_conn.ctx != NULL) {
xmpp_ctx_free(jabber_conn.ctx);
}
jabber_conn.ctx = xmpp_ctx_new(NULL, jabber_conn.log);
if (jabber_conn.ctx == NULL) {
log_warning("Failed to get libstrophe ctx during connect");
return JABBER_DISCONNECTED;
}
jabber_conn.conn = xmpp_conn_new(jabber_conn.ctx);
if (jabber_conn.conn == NULL) {
log_warning("Failed to get libstrophe conn during connect");
return JABBER_DISCONNECTED;
}
xmpp_conn_set_jid(jabber_conn.conn, fulljid);
xmpp_conn_set_pass(jabber_conn.conn, passwd);
if (jabber_conn.tls_disabled) {
xmpp_conn_disable_tls(jabber_conn.conn);
}
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int connect_status = xmpp_connect_client(jabber_conn.conn, altdomain, port,
_connection_handler, jabber_conn.ctx);
if (connect_status == 0)
jabber_conn.conn_status = JABBER_CONNECTING;
else
jabber_conn.conn_status = JABBER_DISCONNECTED;
return jabber_conn.conn_status;
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}
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static void
_jabber_reconnect(void)
{
// reconnect with account.
ProfAccount *account = accounts_get_account(saved_account.name);
if (account == NULL) {
log_error("Unable to reconnect, account no longer exists: %s", saved_account.name);
} else {
char *fulljid = create_fulljid(account->jid, account->resource);
log_debug("Attempting reconnect with account %s", account->name);
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_jabber_connect(fulljid, saved_account.passwd, account->server, account->port);
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free(fulljid);
g_timer_start(reconnect_timer);
}
}
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static void
_connection_handler(xmpp_conn_t * const conn,
const xmpp_conn_event_t status, const int error,
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xmpp_stream_error_t * const stream_error, void * const userdata)
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{
// login success
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if (status == XMPP_CONN_CONNECT) {
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log_debug("Connection handler: XMPP_CONN_CONNECT");
// logged in with account
if (saved_account.name != NULL) {
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log_debug("Connection handler: logged in with account name: %s", saved_account.name);
handle_login_account_success(saved_account.name);
// logged in without account, use details to create new account
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} else {
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log_debug("Connection handler: logged in with jid: %s", saved_details.name);
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accounts_add(saved_details.name, saved_details.altdomain, saved_details.port);
accounts_set_jid(saved_details.name, saved_details.jid);
handle_login_account_success(saved_details.name);
saved_account.name = strdup(saved_details.name);
saved_account.passwd = strdup(saved_details.passwd);
_connection_free_saved_details();
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}
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Jid *myJid = jid_create(jabber_get_fulljid());
jabber_conn.domain = strdup(myJid->domainpart);
jid_destroy(myJid);
chat_sessions_init();
roster_add_handlers();
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message_add_handlers();
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presence_add_handlers();
iq_add_handlers();
roster_request();
bookmark_request();
jabber_conn.conn_status = JABBER_CONNECTED;
if (prefs_get_reconnect() != 0) {
if (reconnect_timer != NULL) {
g_timer_destroy(reconnect_timer);
reconnect_timer = NULL;
}
}
} else if (status == XMPP_CONN_DISCONNECT) {
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log_debug("Connection handler: XMPP_CONN_DISCONNECT");
// lost connection for unkown reason
if (jabber_conn.conn_status == JABBER_CONNECTED) {
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log_debug("Connection handler: Lost connection for unknown reason");
handle_lost_connection();
if (prefs_get_reconnect() != 0) {
assert(reconnect_timer == NULL);
reconnect_timer = g_timer_new();
// free resources but leave saved_user untouched
_connection_free_session_data();
} else {
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_connection_free_saved_account();
_connection_free_saved_details();
_connection_free_session_data();
}
// login attempt failed
} else if (jabber_conn.conn_status != JABBER_DISCONNECTING) {
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log_debug("Connection handler: Login failed");
if (reconnect_timer == NULL) {
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log_debug("Connection handler: No reconnect timer");
handle_failed_login();
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_connection_free_saved_account();
_connection_free_saved_details();
_connection_free_session_data();
} else {
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log_debug("Connection handler: Restarting reconnect timer");
if (prefs_get_reconnect() != 0) {
g_timer_start(reconnect_timer);
}
// free resources but leave saved_user untouched
_connection_free_session_data();
}
}
// close stream response from server after disconnect is handled too
jabber_conn.conn_status = JABBER_DISCONNECTED;
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} else if (status == XMPP_CONN_FAIL) {
log_debug("Connection handler: XMPP_CONN_FAIL");
} else {
log_error("Connection handler: Unknown status");
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}
}
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static log_level_t
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_get_log_level(const xmpp_log_level_t xmpp_level)
{
if (xmpp_level == XMPP_LEVEL_DEBUG) {
return PROF_LEVEL_DEBUG;
} else if (xmpp_level == XMPP_LEVEL_INFO) {
return PROF_LEVEL_INFO;
} else if (xmpp_level == XMPP_LEVEL_WARN) {
return PROF_LEVEL_WARN;
} else {
return PROF_LEVEL_ERROR;
}
}
static xmpp_log_level_t
_get_xmpp_log_level()
{
log_level_t prof_level = log_get_filter();
if (prof_level == PROF_LEVEL_DEBUG) {
return XMPP_LEVEL_DEBUG;
} else if (prof_level == PROF_LEVEL_INFO) {
return XMPP_LEVEL_INFO;
} else if (prof_level == PROF_LEVEL_WARN) {
return XMPP_LEVEL_WARN;
} else {
return XMPP_LEVEL_ERROR;
}
}
static void
_xmpp_file_logger(void * const userdata, const xmpp_log_level_t level,
const char * const area, const char * const msg)
{
log_level_t prof_level = _get_log_level(level);
log_msg(prof_level, area, msg);
if ((g_strcmp0(area, "xmpp") == 0) || (g_strcmp0(area, "conn")) == 0) {
handle_xmpp_stanza(msg);
}
}
static xmpp_log_t *
_xmpp_get_file_logger()
{
xmpp_log_level_t level = _get_xmpp_log_level();
xmpp_log_t *file_log = malloc(sizeof(xmpp_log_t));
file_log->handler = _xmpp_file_logger;
file_log->userdata = &level;
return file_log;
}
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void
jabber_init_module(void)
{
jabber_init = _jabber_init;
jabber_connect_with_account = _jabber_connect_with_account;
jabber_connect_with_details = _jabber_connect_with_details;
jabber_disconnect = _jabber_disconnect;
jabber_shutdown = _jabber_shutdown;
jabber_process_events = _jabber_process_events;
jabber_get_available_resources = _jabber_get_available_resources;
jabber_get_connection_status = _jabber_get_connection_status;
jabber_get_fulljid = _jabber_get_fulljid;
jabber_get_domain = _jabber_get_domain;
jabber_get_presence_message = _jabber_get_presence_message;
jabber_get_account_name = _jabber_get_account_name;
}