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profanity/src/xmpp/connection.c

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/*
* connection.c
* vim: expandtab:ts=4:sts=4:sw=4
*
* Copyright (C) 2012 - 2019 James Booth <boothj5@gmail.com>
* Copyright (C) 2018 - 2019 Michael Vetter <jubalh@idoru.org>
*
* 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 <https://www.gnu.org/licenses/>.
*
* In addition, as a special exception, the copyright holders give permission to
* link the code of portions of this program with the OpenSSL library under
* certain conditions as described in each individual source file, and
* distribute linked combinations including the two.
*
* You must obey the GNU General Public License in all respects for all of the
* code used other than OpenSSL. If you modify file(s) with this exception, you
* may extend this exception to your version of the file(s), but you are not
* obligated to do so. If you do not wish to do so, delete this exception
* statement from your version. If you delete this exception statement from all
* source files in the program, then also delete it here.
*
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <glib.h>
#include <glib/gstdio.h>
#include <strophe.h>
#include "common.h"
#include "log.h"
#include "config/files.h"
#include "config/preferences.h"
#include "event/server_events.h"
#include "xmpp/connection.h"
#include "xmpp/session.h"
#include "xmpp/stanza.h"
#include "xmpp/iq.h"
#include "ui/ui.h"
typedef struct prof_conn_t
{
xmpp_log_t* xmpp_log;
xmpp_ctx_t* xmpp_ctx;
xmpp_conn_t* xmpp_conn;
gboolean xmpp_in_event_loop;
jabber_conn_status_t conn_status;
xmpp_conn_event_t conn_last_event;
char* presence_message;
int priority;
char* domain;
GHashTable* available_resources;
GHashTable* features_by_jid;
GHashTable* requested_features;
} ProfConnection;
typedef struct
{
const char* username;
const char* password;
} prof_reg_t;
static ProfConnection conn;
static gchar* profanity_instance_id = NULL;
static gchar* prof_identifier = NULL;
static xmpp_log_t* _xmpp_get_file_logger(void);
static void _xmpp_file_logger(void* const userdata, const xmpp_log_level_t level, const char* const area, const char* const msg);
static void _connection_handler(xmpp_conn_t* const xmpp_conn, const xmpp_conn_event_t status, const int error,
xmpp_stream_error_t* const stream_error, void* const userdata);
TLSCertificate* _xmppcert_to_profcert(const xmpp_tlscert_t* xmpptlscert);
static int _connection_certfail_cb(const xmpp_tlscert_t* xmpptlscert, const char* errormsg);
static void _random_bytes_init(void);
static void _random_bytes_close(void);
static void _compute_identifier(const char* barejid);
void
connection_init(void)
{
xmpp_initialize();
conn.xmpp_conn = NULL;
conn.xmpp_ctx = NULL;
conn.xmpp_in_event_loop = FALSE;
conn.conn_status = JABBER_DISCONNECTED;
conn.conn_last_event = XMPP_CONN_DISCONNECT;
conn.presence_message = NULL;
conn.domain = NULL;
conn.features_by_jid = NULL;
conn.available_resources = g_hash_table_new_full(g_str_hash, g_str_equal, free, (GDestroyNotify)resource_destroy);
conn.requested_features = g_hash_table_new_full(g_str_hash, g_str_equal, free, NULL);
_random_bytes_init();
}
void
connection_check_events(void)
{
conn.xmpp_in_event_loop = TRUE;
xmpp_run_once(conn.xmpp_ctx, 10);
conn.xmpp_in_event_loop = FALSE;
}
void
connection_shutdown(void)
{
connection_clear_data();
xmpp_shutdown();
free(conn.xmpp_log);
conn.xmpp_log = NULL;
_random_bytes_close();
}
jabber_conn_status_t
connection_connect(const char* const jid, const char* const passwd, const char* const altdomain, int port,
const char* const tls_policy, const char* const auth_policy)
{
long flags;
assert(jid != NULL);
assert(passwd != NULL);
Jid* jidp = jid_create(jid);
if (jidp == NULL) {
log_error("Malformed JID not able to connect: %s", jid);
conn.conn_status = JABBER_DISCONNECTED;
return conn.conn_status;
}
_compute_identifier(jidp->barejid);
jid_destroy(jidp);
log_info("Connecting as %s", jid);
if (conn.xmpp_log) {
free(conn.xmpp_log);
}
conn.xmpp_log = _xmpp_get_file_logger();
if (conn.xmpp_conn) {
xmpp_conn_release(conn.xmpp_conn);
}
if (conn.xmpp_ctx) {
xmpp_ctx_free(conn.xmpp_ctx);
}
conn.xmpp_ctx = xmpp_ctx_new(NULL, conn.xmpp_log);
if (conn.xmpp_ctx == NULL) {
log_warning("Failed to get libstrophe ctx during connect");
return JABBER_DISCONNECTED;
}
conn.xmpp_conn = xmpp_conn_new(conn.xmpp_ctx);
if (conn.xmpp_conn == NULL) {
log_warning("Failed to get libstrophe conn during connect");
return JABBER_DISCONNECTED;
}
xmpp_conn_set_jid(conn.xmpp_conn, jid);
xmpp_conn_set_pass(conn.xmpp_conn, passwd);
flags = xmpp_conn_get_flags(conn.xmpp_conn);
if (!tls_policy || (g_strcmp0(tls_policy, "force") == 0)) {
flags |= XMPP_CONN_FLAG_MANDATORY_TLS;
} else if (g_strcmp0(tls_policy, "trust") == 0) {
flags |= XMPP_CONN_FLAG_MANDATORY_TLS;
flags |= XMPP_CONN_FLAG_TRUST_TLS;
} else if (g_strcmp0(tls_policy, "disable") == 0) {
flags |= XMPP_CONN_FLAG_DISABLE_TLS;
} else if (g_strcmp0(tls_policy, "legacy") == 0) {
flags |= XMPP_CONN_FLAG_LEGACY_SSL;
}
if (auth_policy && (g_strcmp0(auth_policy, "legacy") == 0)) {
flags |= XMPP_CONN_FLAG_LEGACY_AUTH;
}
xmpp_conn_set_flags(conn.xmpp_conn, flags);
/* Print debug logs that can help when users share the logs */
if (flags != 0) {
log_debug("Connecting with flags (0x%lx):", flags);
#define LOG_FLAG_IF_SET(name) \
if (flags & name) { \
log_debug(" " #name); \
}
LOG_FLAG_IF_SET(XMPP_CONN_FLAG_MANDATORY_TLS);
LOG_FLAG_IF_SET(XMPP_CONN_FLAG_TRUST_TLS);
LOG_FLAG_IF_SET(XMPP_CONN_FLAG_DISABLE_TLS);
LOG_FLAG_IF_SET(XMPP_CONN_FLAG_LEGACY_SSL);
LOG_FLAG_IF_SET(XMPP_CONN_FLAG_LEGACY_AUTH);
#undef LOG_FLAG_IF_SET
}
char* cert_path = prefs_get_tls_certpath();
if (cert_path) {
xmpp_conn_set_capath(conn.xmpp_conn, cert_path);
free(cert_path);
}
xmpp_conn_set_certfail_handler(conn.xmpp_conn, _connection_certfail_cb);
int connect_status = xmpp_connect_client(
conn.xmpp_conn,
altdomain,
port,
_connection_handler,
conn.xmpp_ctx);
if (connect_status == 0) {
conn.conn_status = JABBER_CONNECTING;
} else {
conn.conn_status = JABBER_DISCONNECTED;
}
return conn.conn_status;
}
static int
iq_reg2_cb(xmpp_conn_t* xmpp_conn, xmpp_stanza_t* stanza, void* userdata)
{
const char* type;
(void)userdata;
type = xmpp_stanza_get_type(stanza);
if (!type || strcmp(type, "error") == 0) {
char* error_message = stanza_get_error_message(stanza);
cons_show_error("Server error: %s", error_message);
log_debug("Registration error: %s", error_message);
goto quit;
}
if (strcmp(type, "result") != 0) {
log_debug("Expected type 'result', but got %s.", type);
goto quit;
}
cons_show("Registration successful.");
log_info("Registration successful.");
goto quit;
quit:
xmpp_disconnect(xmpp_conn);
return 0;
}
static int
iq_reg_cb(xmpp_conn_t* xmpp_conn, xmpp_stanza_t* stanza, void* userdata)
{
prof_reg_t* reg = (prof_reg_t*)userdata;
xmpp_stanza_t* registered = NULL;
xmpp_stanza_t* query;
const char* type;
type = xmpp_stanza_get_type(stanza);
if (!type || strcmp(type, "error") == 0) {
char* error_message = stanza_get_error_message(stanza);
cons_show_error("Server error: %s", error_message);
log_debug("Registration error: %s", error_message);
xmpp_disconnect(xmpp_conn);
goto quit;
}
if (strcmp(type, "result") != 0) {
log_debug("Expected type 'result', but got %s.", type);
xmpp_disconnect(xmpp_conn);
goto quit;
}
query = xmpp_stanza_get_child_by_name(stanza, "query");
if (query)
registered = xmpp_stanza_get_child_by_name(query, "registered");
if (registered != NULL) {
cons_show_error("Already registered.");
log_debug("Already registered.");
xmpp_disconnect(xmpp_conn);
goto quit;
}
xmpp_stanza_t* iq = stanza_register_new_account(conn.xmpp_ctx, reg->username, reg->password);
xmpp_id_handler_add(xmpp_conn, iq_reg2_cb, xmpp_stanza_get_id(iq), reg);
xmpp_send(xmpp_conn, iq);
quit:
return 0;
}
static int
_register_handle_error(xmpp_conn_t* xmpp_conn, xmpp_stanza_t* stanza, void* userdata)
{
(void)stanza;
(void)userdata;
char* error_message = stanza_get_error_message(stanza);
cons_show_error("Server error: %s", error_message);
log_debug("Registration error: %s", error_message);
xmpp_disconnect(xmpp_conn);
return 0;
}
static int
_register_handle_proceedtls_default(xmpp_conn_t* xmpp_conn,
xmpp_stanza_t* stanza,
void* userdata)
{
const char* name = xmpp_stanza_get_name(stanza);
(void)userdata;
if (strcmp(name, "proceed") == 0) {
log_debug("Proceeding with TLS.");
if (xmpp_conn_tls_start(xmpp_conn) == 0) {
xmpp_handler_delete(xmpp_conn, _register_handle_error);
xmpp_conn_open_stream_default(xmpp_conn);
} else {
log_debug("TLS failed.");
/* failed tls spoils the connection, so disconnect */
xmpp_disconnect(xmpp_conn);
}
}
return 0;
}
static int
_register_handle_missing_features(xmpp_conn_t* xmpp_conn, void* userdata)
{
(void)userdata;
log_debug("Timeout");
xmpp_disconnect(xmpp_conn);
return 0;
}
static int
_register_handle_features(xmpp_conn_t* xmpp_conn, xmpp_stanza_t* stanza, void* userdata)
{
prof_reg_t* reg = (prof_reg_t*)userdata;
xmpp_ctx_t* ctx = conn.xmpp_ctx;
xmpp_stanza_t* child;
xmpp_stanza_t* iq;
char* domain;
xmpp_timed_handler_delete(xmpp_conn, _register_handle_missing_features);
/* secure connection if possible */
child = xmpp_stanza_get_child_by_name(stanza, "starttls");
if (child && (strcmp(xmpp_stanza_get_ns(child), XMPP_NS_TLS) == 0)) {
log_debug("Server supports TLS. Attempting to establish...");
child = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(child, "starttls");
xmpp_stanza_set_ns(child, XMPP_NS_TLS);
xmpp_handler_add(xmpp_conn, _register_handle_proceedtls_default, XMPP_NS_TLS, NULL,
NULL, NULL);
xmpp_send(xmpp_conn, child);
xmpp_stanza_release(child);
return 0;
}
/* check whether server supports in-band registration */
child = xmpp_stanza_get_child_by_name(stanza, "register");
if (!child) {
log_debug("Server does not support in-band registration.");
cons_show_error("Server does not support in-band registration, aborting.");
xmpp_disconnect(xmpp_conn);
return 0;
}
log_debug("Server supports in-band registration. Attempting registration.");
domain = strdup(conn.domain);
iq = xmpp_iq_new(ctx, "get", "reg1");
xmpp_stanza_set_to(iq, domain);
child = xmpp_stanza_new(ctx);
xmpp_stanza_set_name(child, "query");
xmpp_stanza_set_ns(child, STANZA_NS_REGISTER);
xmpp_stanza_add_child(iq, child);
xmpp_handler_add(xmpp_conn, iq_reg_cb, STANZA_NS_REGISTER, "iq", NULL, reg);
xmpp_send(xmpp_conn, iq);
xmpp_free(ctx, domain);
xmpp_stanza_release(child);
xmpp_stanza_release(iq);
return 0;
}
static void
_register_handler(xmpp_conn_t* xmpp_conn,
xmpp_conn_event_t status,
int error,
xmpp_stream_error_t* stream_error,
void* userdata)
{
conn.conn_last_event = status;
prof_reg_t* reg = (prof_reg_t*)userdata;
int secured;
(void)error;
(void)stream_error;
switch (status) {
case XMPP_CONN_RAW_CONNECT:
log_debug("Raw connection established.");
xmpp_conn_open_stream_default(xmpp_conn);
conn.conn_status = JABBER_RAW_CONNECTED;
break;
case XMPP_CONN_CONNECT:
log_debug("Connected.");
secured = xmpp_conn_is_secured(xmpp_conn);
conn.conn_status = JABBER_CONNECTED;
log_debug("Connection is %s.\n",
secured ? "secured" : "NOT secured");
Jid* my_jid = jid_create(xmpp_conn_get_jid(xmpp_conn));
conn.domain = strdup(my_jid->domainpart);
jid_destroy(my_jid);
xmpp_handler_add(xmpp_conn, _register_handle_error, XMPP_NS_STREAMS, "error", NULL,
NULL);
xmpp_handler_add(xmpp_conn, _register_handle_features, XMPP_NS_STREAMS, "features",
NULL, reg);
xmpp_timed_handler_add(xmpp_conn, _register_handle_missing_features, 5000,
NULL);
break;
case XMPP_CONN_DISCONNECT:
log_debug("Disconnected");
conn.conn_status = JABBER_DISCONNECTED;
break;
default:
break;
}
}
jabber_conn_status_t
connection_register(const char* const altdomain, int port, const char* const tls_policy,
const char* const username, const char* const password)
{
long flags;
Jid* jidp = jid_create(altdomain);
if (jidp == NULL) {
log_error("Malformed JID not able to connect: %s", altdomain);
conn.conn_status = JABBER_DISCONNECTED;
return conn.conn_status;
}
_compute_identifier(jidp->barejid);
jid_destroy(jidp);
if (conn.xmpp_log) {
free(conn.xmpp_log);
}
conn.xmpp_log = _xmpp_get_file_logger();
if (conn.xmpp_conn) {
xmpp_conn_release(conn.xmpp_conn);
}
if (conn.xmpp_ctx) {
xmpp_ctx_free(conn.xmpp_ctx);
}
conn.xmpp_ctx = xmpp_ctx_new(NULL, conn.xmpp_log);
if (conn.xmpp_ctx == NULL) {
log_warning("Failed to get libstrophe ctx during connect");
return JABBER_DISCONNECTED;
}
conn.xmpp_conn = xmpp_conn_new(conn.xmpp_ctx);
if (conn.xmpp_conn == NULL) {
log_warning("Failed to get libstrophe conn during connect");
return JABBER_DISCONNECTED;
}
xmpp_conn_set_jid(conn.xmpp_conn, altdomain);
flags = xmpp_conn_get_flags(conn.xmpp_conn);
if (!tls_policy || (g_strcmp0(tls_policy, "force") == 0)) {
flags |= XMPP_CONN_FLAG_MANDATORY_TLS;
} else if (g_strcmp0(tls_policy, "trust") == 0) {
flags |= XMPP_CONN_FLAG_MANDATORY_TLS;
flags |= XMPP_CONN_FLAG_TRUST_TLS;
} else if (g_strcmp0(tls_policy, "disable") == 0) {
flags |= XMPP_CONN_FLAG_DISABLE_TLS;
} else if (g_strcmp0(tls_policy, "legacy") == 0) {
flags |= XMPP_CONN_FLAG_LEGACY_SSL;
}
xmpp_conn_set_flags(conn.xmpp_conn, flags);
/* Print debug logs that can help when users share the logs */
if (flags != 0) {
log_debug("Connecting with flags (0x%lx):", flags);
#define LOG_FLAG_IF_SET(name) \
if (flags & name) { \
log_debug(" " #name); \
}
LOG_FLAG_IF_SET(XMPP_CONN_FLAG_MANDATORY_TLS);
LOG_FLAG_IF_SET(XMPP_CONN_FLAG_TRUST_TLS);
LOG_FLAG_IF_SET(XMPP_CONN_FLAG_DISABLE_TLS);
LOG_FLAG_IF_SET(XMPP_CONN_FLAG_LEGACY_SSL);
#undef LOG_FLAG_IF_SET
}
prof_reg_t* reg;
reg = calloc(1, sizeof(*reg));
if (reg == NULL) {
log_warning("Failed to allocate registration data struct during connect");
return JABBER_DISCONNECTED;
}
reg->username = strdup(username);
reg->password = strdup(password);
char* cert_path = prefs_get_tls_certpath();
if (cert_path) {
xmpp_conn_set_capath(conn.xmpp_conn, cert_path);
free(cert_path);
}
xmpp_conn_set_certfail_handler(conn.xmpp_conn, _connection_certfail_cb);
int connect_status = xmpp_connect_raw(
conn.xmpp_conn,
altdomain,
port,
_register_handler,
reg);
if (connect_status == 0) {
conn.conn_status = JABBER_RAW_CONNECTING;
} else {
conn.conn_status = JABBER_DISCONNECTED;
}
return conn.conn_status;
}
void
connection_disconnect(void)
{
// don't disconnect already disconnected connection,
// or we get infinite loop otherwise
if (conn.conn_last_event == XMPP_CONN_CONNECT) {
conn.conn_status = JABBER_DISCONNECTING;
xmpp_disconnect(conn.xmpp_conn);
while (conn.conn_status == JABBER_DISCONNECTING) {
session_process_events();
}
} else {
conn.conn_status = JABBER_DISCONNECTED;
}
// can't free libstrophe objects while we're in the event loop
if (!conn.xmpp_in_event_loop) {
if (conn.xmpp_conn) {
xmpp_conn_release(conn.xmpp_conn);
conn.xmpp_conn = NULL;
}
if (conn.xmpp_ctx) {
xmpp_ctx_free(conn.xmpp_ctx);
conn.xmpp_ctx = NULL;
}
}
free(prof_identifier);
prof_identifier = NULL;
}
void
connection_set_disconnected(void)
{
FREE_SET_NULL(conn.presence_message);
FREE_SET_NULL(conn.domain);
conn.conn_status = JABBER_DISCONNECTED;
}
void
connection_clear_data(void)
{
if (conn.features_by_jid) {
g_hash_table_destroy(conn.features_by_jid);
conn.features_by_jid = NULL;
}
if (conn.available_resources) {
g_hash_table_remove_all(conn.available_resources);
}
if (conn.requested_features) {
g_hash_table_remove_all(conn.requested_features);
}
}
TLSCertificate*
connection_get_tls_peer_cert(void)
{
xmpp_tlscert_t* xmpptlscert = xmpp_conn_get_peer_cert(conn.xmpp_conn);
TLSCertificate* cert = _xmppcert_to_profcert(xmpptlscert);
xmpp_tlscert_free(xmpptlscert);
return cert;
}
gboolean
connection_is_secured(void)
{
if (conn.conn_status == JABBER_CONNECTED) {
return xmpp_conn_is_secured(conn.xmpp_conn) == 0 ? FALSE : TRUE;
} else {
return FALSE;
}
}
gboolean
connection_send_stanza(const char* const stanza)
{
if (conn.conn_status != JABBER_CONNECTED) {
return FALSE;
} else {
xmpp_send_raw_string(conn.xmpp_conn, "%s", stanza);
return TRUE;
}
}
gboolean
connection_supports(const char* const feature)
{
gboolean ret = FALSE;
GList* jids = g_hash_table_get_keys(conn.features_by_jid);
GList* curr = jids;
while (curr) {
char* jid = curr->data;
GHashTable* features = g_hash_table_lookup(conn.features_by_jid, jid);
if (features && g_hash_table_lookup(features, feature)) {
ret = TRUE;
break;
}
curr = g_list_next(curr);
}
g_list_free(jids);
return ret;
}
char*
connection_jid_for_feature(const char* const feature)
{
if (conn.features_by_jid == NULL) {
return NULL;
}
GList* jids = g_hash_table_get_keys(conn.features_by_jid);
GList* curr = jids;
while (curr) {
char* jid = curr->data;
GHashTable* features = g_hash_table_lookup(conn.features_by_jid, jid);
if (features && g_hash_table_lookup(features, feature)) {
g_list_free(jids);
return jid;
}
curr = g_list_next(curr);
}
g_list_free(jids);
return NULL;
}
void
connection_request_features(void)
{
/* We don't record it as a requested feature to avoid triggering th
* sv_ev_connection_features_received too soon */
iq_disco_info_request_onconnect(conn.domain);
}
void
connection_set_disco_items(GSList* items)
{
GSList* curr = items;
while (curr) {
DiscoItem* item = curr->data;
g_hash_table_insert(conn.requested_features, strdup(item->jid), NULL);
g_hash_table_insert(conn.features_by_jid, strdup(item->jid),
g_hash_table_new_full(g_str_hash, g_str_equal, free, NULL));
iq_disco_info_request_onconnect(item->jid);
curr = g_slist_next(curr);
}
}
jabber_conn_status_t
connection_get_status(void)
{
return conn.conn_status;
}
xmpp_conn_t*
connection_get_conn(void)
{
return conn.xmpp_conn;
}
xmpp_ctx_t*
connection_get_ctx(void)
{
return conn.xmpp_ctx;
}
const char*
connection_get_fulljid(void)
{
const char* jid = xmpp_conn_get_bound_jid(conn.xmpp_conn);
if (jid) {
return jid;
} else {
return xmpp_conn_get_jid(conn.xmpp_conn);
}
}
char*
connection_get_barejid(void)
{
const char* jid = connection_get_fulljid();
char* result;
Jid* jidp = jid_create(jid);
result = strdup(jidp->barejid);
jid_destroy(jidp);
return result;
}
char*
connection_get_user(void)
{
const char* jid = connection_get_fulljid();
char* result;
result = strdup(jid);
char* split = strchr(result, '@');
*split = '\0';
return result;
}
void
connection_features_received(const char* const jid)
{
log_info("[CONNECTION] connection_features_received %s", jid);
if (g_hash_table_remove(conn.requested_features, jid) && g_hash_table_size(conn.requested_features) == 0) {
sv_ev_connection_features_received();
}
}
GHashTable*
connection_get_features(const char* const jid)
{
return g_hash_table_lookup(conn.features_by_jid, jid);
}
GList*
connection_get_available_resources(void)
{
return g_hash_table_get_values(conn.available_resources);
}
void
connection_add_available_resource(Resource* resource)
{
g_hash_table_replace(conn.available_resources, strdup(resource->name), resource);
}
void
connection_remove_available_resource(const char* const resource)
{
g_hash_table_remove(conn.available_resources, resource);
}
char*
connection_create_uuid(void)
{
return xmpp_uuid_gen(conn.xmpp_ctx);
}
void
connection_free_uuid(char* uuid)
{
if (uuid) {
xmpp_free(conn.xmpp_ctx, uuid);
}
}
char*
connection_create_stanza_id(void)
{
char* rndid = get_random_string(CON_RAND_ID_LEN);
assert(rndid != NULL);
gchar* hmac = g_compute_hmac_for_string(G_CHECKSUM_SHA1,
(guchar*)prof_identifier, strlen(prof_identifier),
rndid, strlen(rndid));
char* ret = g_strdup_printf("%s%s", rndid, hmac);
free(rndid);
g_free(hmac);
return ret;
}
char*
connection_get_domain(void)
{
return conn.domain;
}
char*
connection_get_presence_msg(void)
{
return conn.presence_message;
}
void
connection_set_presence_msg(const char* const message)
{
FREE_SET_NULL(conn.presence_message);
if (message) {
conn.presence_message = strdup(message);
}
}
void
connection_set_priority(const int priority)
{
conn.priority = priority;
}
static void
_connection_handler(xmpp_conn_t* const xmpp_conn, const xmpp_conn_event_t status, const int error,
xmpp_stream_error_t* const stream_error, void* const userdata)
{
conn.conn_last_event = status;
switch (status) {
// login success
case XMPP_CONN_CONNECT:
log_debug("Connection handler: XMPP_CONN_CONNECT");
conn.conn_status = JABBER_CONNECTED;
Jid* my_jid = jid_create(xmpp_conn_get_jid(conn.xmpp_conn));
conn.domain = strdup(my_jid->domainpart);
jid_destroy(my_jid);
conn.features_by_jid = g_hash_table_new_full(g_str_hash, g_str_equal, free, (GDestroyNotify)g_hash_table_destroy);
g_hash_table_insert(conn.features_by_jid, strdup(conn.domain), g_hash_table_new_full(g_str_hash, g_str_equal, free, NULL));
session_login_success(connection_is_secured());
break;
// raw connection success
case XMPP_CONN_RAW_CONNECT:
log_debug("Connection handler: XMPP_CONN_RAW_CONNECT");
conn.conn_status = JABBER_RAW_CONNECTED;
Jid* my_raw_jid = jid_create(xmpp_conn_get_jid(conn.xmpp_conn));
log_debug("jid: %s", xmpp_conn_get_jid(conn.xmpp_conn));
conn.domain = strdup(my_raw_jid->domainpart);
jid_destroy(my_raw_jid);
conn.features_by_jid = g_hash_table_new_full(g_str_hash, g_str_equal, free, (GDestroyNotify)g_hash_table_destroy);
g_hash_table_insert(conn.features_by_jid, strdup(conn.domain), g_hash_table_new_full(g_str_hash, g_str_equal, free, NULL));
xmpp_conn_open_stream_default(xmpp_conn);
break;
// disconnected
case XMPP_CONN_DISCONNECT:
log_debug("Connection handler: XMPP_CONN_DISCONNECT");
// lost connection for unknown reason
if (conn.conn_status == JABBER_CONNECTED) {
log_debug("Connection handler: Lost connection for unknown reason");
session_lost_connection();
// login attempt failed
} else if (conn.conn_status != JABBER_DISCONNECTING) {
log_debug("Connection handler: Login failed");
session_login_failed();
}
// close stream response from server after disconnect is handled
conn.conn_status = JABBER_DISCONNECTED;
break;
// connection failed
case XMPP_CONN_FAIL:
log_debug("Connection handler: XMPP_CONN_FAIL");
break;
// unknown state
default:
log_error("Connection handler: Unknown status");
break;
}
}
static int
_connection_certfail_cb(const xmpp_tlscert_t* xmpptlscert, const char* errormsg)
{
TLSCertificate* cert = _xmppcert_to_profcert(xmpptlscert);
int res = sv_ev_certfail(errormsg, cert);
tlscerts_free(cert);
return res;
}
TLSCertificate*
_xmppcert_to_profcert(const xmpp_tlscert_t* xmpptlscert)
{
int version = (int)strtol(
xmpp_tlscert_get_string(xmpptlscert, XMPP_CERT_VERSION), NULL, 10);
return tlscerts_new(
xmpp_tlscert_get_string(xmpptlscert, XMPP_CERT_FINGERPRINT_SHA1),
version,
xmpp_tlscert_get_string(xmpptlscert, XMPP_CERT_SERIALNUMBER),
xmpp_tlscert_get_string(xmpptlscert, XMPP_CERT_SUBJECT),
xmpp_tlscert_get_string(xmpptlscert, XMPP_CERT_ISSUER),
xmpp_tlscert_get_string(xmpptlscert, XMPP_CERT_NOTBEFORE),
xmpp_tlscert_get_string(xmpptlscert, XMPP_CERT_NOTAFTER),
xmpp_tlscert_get_string(xmpptlscert, XMPP_CERT_KEYALG),
xmpp_tlscert_get_string(xmpptlscert, XMPP_CERT_SIGALG));
}
static xmpp_log_t*
_xmpp_get_file_logger(void)
{
log_level_t prof_level = log_get_filter();
xmpp_log_level_t xmpp_level = XMPP_LEVEL_ERROR;
switch (prof_level) {
case PROF_LEVEL_DEBUG:
xmpp_level = XMPP_LEVEL_DEBUG;
break;
case PROF_LEVEL_INFO:
xmpp_level = XMPP_LEVEL_INFO;
break;
case PROF_LEVEL_WARN:
xmpp_level = XMPP_LEVEL_WARN;
break;
default:
xmpp_level = XMPP_LEVEL_ERROR;
break;
}
xmpp_log_t* file_log = malloc(sizeof(xmpp_log_t));
file_log->handler = _xmpp_file_logger;
file_log->userdata = &xmpp_level;
return file_log;
}
static void
_xmpp_file_logger(void* const userdata, const xmpp_log_level_t xmpp_level, const char* const area, const char* const msg)
{
log_level_t prof_level = PROF_LEVEL_ERROR;
switch (xmpp_level) {
case XMPP_LEVEL_DEBUG:
prof_level = PROF_LEVEL_DEBUG;
break;
case XMPP_LEVEL_INFO:
prof_level = PROF_LEVEL_INFO;
break;
case XMPP_LEVEL_WARN:
prof_level = PROF_LEVEL_WARN;
break;
default:
prof_level = PROF_LEVEL_ERROR;
break;
}
log_msg(prof_level, area, msg);
if ((g_strcmp0(area, "xmpp") == 0) || (g_strcmp0(area, "conn")) == 0) {
sv_ev_xmpp_stanza(msg);
}
}
static void
_random_bytes_init(void)
{
char* rndbytes_loc;
GKeyFile* rndbytes;
rndbytes_loc = files_get_data_path(FILE_PROFANITY_IDENTIFIER);
if (g_file_test(rndbytes_loc, G_FILE_TEST_EXISTS)) {
g_chmod(rndbytes_loc, S_IRUSR | S_IWUSR);
}
rndbytes = g_key_file_new();
g_key_file_load_from_file(rndbytes, rndbytes_loc, G_KEY_FILE_KEEP_COMMENTS, NULL);
if (g_key_file_has_group(rndbytes, "identifier")) {
profanity_instance_id = g_key_file_get_string(rndbytes, "identifier", "random_bytes", NULL);
} else {
profanity_instance_id = get_random_string(10);
g_key_file_set_string(rndbytes, "identifier", "random_bytes", profanity_instance_id);
gsize g_data_size;
gchar* g_accounts_data = g_key_file_to_data(rndbytes, &g_data_size, NULL);
gchar* base = g_path_get_dirname(rndbytes_loc);
gchar* true_loc = get_file_or_linked(rndbytes_loc, base);
g_file_set_contents(true_loc, g_accounts_data, g_data_size, NULL);
g_free(base);
free(true_loc);
g_free(g_accounts_data);
}
free(rndbytes_loc);
g_key_file_free(rndbytes);
}
static void
_random_bytes_close(void)
{
g_free(profanity_instance_id);
}
static void
_compute_identifier(const char* barejid)
{
// in case of reconnect (lost connection)
free(prof_identifier);
prof_identifier = g_compute_hmac_for_string(G_CHECKSUM_SHA256,
(guchar*)profanity_instance_id, strlen(profanity_instance_id),
barejid, strlen(barejid));
}
const char*
connection_get_profanity_identifier(void)
{
return prof_identifier;
}
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