mu - Soul of a tiny new machine. More thorough tests → More comprehensible and rewrite-friendly software → More resilient society.

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/* * capabilities.c * * Copyright (C) 2012 - 2017 James Booth <boothj5@gmail.com> * * 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" #ifdef HAVE_GIT_VERSION #include "gitversion.h" #endif #include <stdlib.h> #include <string.h> #include <glib.h> #include <glib/gstdio.h> #ifdef HAVE_LIBMESODE #include <mesode.h> #endif #ifdef HAVE_LIBSTROPHE #include <strophe.h> #endif #include "common.h" #include "log.h" #include "event/client_events.h" #include "plugins/plugins.h" #include "config/files.h" #include "config/preferences.h" #include "xmpp/xmpp.h" #include "xmpp/stanza.h" #include "xmpp/form.h" #include "xmpp/capabilities.h" static char *cache_loc; static GKeyFile *cache; static GHashTable *jid_to_ver; static GHashTable *jid_to_caps; static GHashTable *prof_features; static char *my_sha1; static void _save_cache(void); static EntityCapabilities* _caps_by_ver(const char *const ver); static EntityCapabilities* _caps_by_jid(const char *const jid); static EntityCapabilities* _caps_copy(EntityCapabilities *caps); void caps_init(void) { log_info("Loading capabilities cache"); cache_loc = files_get_data_path(FILE_CAPSCACHE); if (g_file_test(cache_loc, G_FILE_TEST_EXISTS)) { g_chmod(cache_loc, S_IRUSR | S_IWUSR); } cache = g_key_file_new(); g_key_file_load_from_file(cache, cache_loc, G_KEY_FILE_KEEP_COMMENTS, NULL); jid_to_ver = g_hash_table_new_full(g_str_hash, g_str_equal, free, free); jid_to_caps = g_hash_table_new_full(g_str_hash, g_str_equal, free, (GDestroyNotify)caps_destroy); prof_features = g_hash_table_new_full(g_str_hash, g_str_equal, free, NULL); g_hash_table_add(prof_features, strdup(STANZA_NS_CAPS)); g_hash_table_add(prof_features, strdup(XMPP_NS_DISCO_INFO)); g_hash_table_add(prof_features, strdup(XMPP_NS_DISCO_ITEMS)); g_hash_table_add(prof_features, strdup(STANZA_NS_MUC)); g_hash_table_add(prof_features, strdup(STANZA_NS_CONFERENCE)); g_hash_table_add(prof_features, strdup(STANZA_NS_VERSION)); g_hash_table_add(prof_features, strdup(STANZA_NS_CHATSTATES)); g_hash_table_add(prof_features, strdup(STANZA_NS_PING)); if (prefs_get_boolean(PREF_RECEIPTS_SEND)) { g_hash_table_add(prof_features, strdup(STANZA_NS_RECEIPTS)); } if (prefs_get_boolean(PREF_LASTACTIVITY)) { g_hash_table_add(prof_features, strdup(STANZA_NS_LASTACTIVITY)); } my_sha1 = NULL; } void caps_add_feature(char *feature) { if (g_hash_table_contains(prof_features, feature)) { return; } g_hash_table_add(prof_features, strdup(feature)); caps_reset_ver(); // resend presence to update server's disco info data for this client if (connection_get_status() == JABBER_CONNECTED) { resource_presence_t last_presence = accounts_get_last_presence(session_get_account_name()); cl_ev_presence_send(last_presence, 0); } } void caps_remove_feature(char *feature) { if (!g_hash_table_contains(prof_features, feature)) { return; } g_hash_table_remove(prof_features, feature); caps_reset_ver(); // resend presence to update server's disco info data for this client if (connection_get_status() == JABBER_CONNECTED) { resource_presence_t last_presence = accounts_get_last_presence(session_get_account_name()); cl_ev_presence_send(last_presence, 0); } } GList* caps_get_features(void) { GList *result = NULL; GList *features_as_list = g_hash_table_get_keys(prof_features); GList *curr = features_as_list; while (curr) { result = g_list_append(result, strdup(curr->data)); curr = g_list_next(curr); } g_list_free(features_as_list); GList *plugin_features = plugins_get_disco_features(); curr = plugin_features; while (curr) { result = g_list_append(result, strdup(curr->data)); curr = g_list_next(curr); } g_list_free(plugin_features); return result; } EntityCapabilities* caps_create(const char *const category, const char *const type, const char *const name, const char *const software, const char *const software_version, const char *const os, const char *const os_version, GSList *features) { EntityCapabilities *result = (EntityCapabilities *)malloc(sizeof(EntityCapabilities)); if (category || type || name) { DiscoIdentity *identity = (DiscoIdentity*)malloc(sizeof(DiscoIdentity)); identity->category = category ? strdup(category) : NULL; identity->type = type ? strdup(type) : NULL; identity->name = name ? strdup(name) : NULL; result->identity = identity; } else { result->identity = NULL; } if (software || software_version || os || os_version) { SoftwareVersion *software_versionp = (SoftwareVersion*)malloc(sizeof(SoftwareVersion)); software_versionp->software = software ? strdup(software) : NULL; software_versionp->software_version = software_version ? strdup(software_version) : NULL; software_versionp->os = os ? strdup(os) : NULL; software_versionp->os_version = os_version ? strdup(os_version) : NULL; result->software_version = software_versionp; } else { result->software_version = NULL; } result->features = NULL; GSList *curr = features; while (curr) { result->features = g_slist_append(result->features, strdup(curr->data)); curr = g_slist_next(curr); } return result; } void caps_add_by_ver(const char *const ver, EntityCapabilities *caps) { if (ver == NULL || caps == NULL) { return; } gboolean cached = g_key_file_has_group(cache, ver); if (cached) { return; } if (caps->identity) { DiscoIdentity *identity = caps->identity; if (identity->name) { g_key_file_set_string(cache, ver, "name", identity->name); } if (identity->category) { g_key_file_set_string(cache, ver, "category", identity->category); } if (identity->type) { g_key_file_set_string(cache, ver, "type", identity->type); } } if (caps->software_version) { SoftwareVersion *software_version = caps->software_version; if (software_version->software) { g_key_file_set_string(cache, ver, "software", software_version->software); } if (software_version->software_version) { g_key_file_set_string(cache, ver, "software_version", software_version->software_version); } if (software_version->os) { g_key_file_set_string(cache, ver, "os", software_version->os); } if (software_version->os_version) { g_key_file_set_string(cache, ver, "os_version", software_version->os_version); } } if (caps->features) { GSList *curr_feature = caps->features; int num = g_slist_length(caps->features); const gchar* features_list[num]; int curr = 0; while (curr_feature) { features_list[curr++] = curr_feature->data; curr_feature = g_slist_next(curr_feature); } g_key_file_set_string_list(cache, ver, "features", features_list, num); } _save_cache(); } void caps_add_by_jid(const char *const jid, EntityCapabilities *caps) { g_hash_table_insert(jid_to_caps, strdup(jid), caps); } void caps_map_jid_to_ver(const char *const jid, const char *const ver) { g_hash_table_insert(jid_to_ver, strdup(jid), strdup(ver)); } gboolean caps_cache_contains(const char *const ver) { return (g_key_file_has_group(cache, ver)); } EntityCapabilities* caps_lookup(const char *const jid) { char *ver = g_hash_table_lookup(jid_to_ver, jid); if (ver) { EntityCapabilities *caps = _caps_by_ver(ver); if (caps) { log_debug("Capabilities lookup %s, found by verification string %s.", jid, ver); return caps; } } else { EntityCapabilities *caps = _caps_by_jid(jid); if (caps) { log_debug("Capabilities lookup %s, found by JID.", jid); return _caps_copy(caps); } } log_debug("Capabilities lookup %s, none found.", jid); return NULL; } gboolean caps_jid_has_feature(const char *const jid, const char *const feature) { EntityCapabilities *caps = caps_lookup(jid); if (caps == NULL) { return FALSE; } GSList *found = g_slist_find_custom(caps->features, feature, (GCompareFunc)g_strcmp0); gboolean result = found != NULL; caps_destroy(caps); return result; } char* caps_get_my_sha1(xmpp_ctx_t *const ctx) { if (my_sha1 == NULL) { xmpp_stanza_t *query = stanza_create_caps_query_element(ctx); my_sha1 = stanza_create_caps_sha1_from_query(query); xmpp_stanza_release(query); } return my_sha1; } void caps_reset_ver(void) { if (my_sha1) { g_free(my_sha1); my_sha1 = NULL; } } void caps_close(void) { g_key_file_free(cache); cache = NULL; g_hash_table_destroy(jid_to_ver); g_hash_table_destroy(jid_to_caps); free(cache_loc); cache_loc = NULL; g_hash_table_destroy(prof_features); prof_features = NULL; } static EntityCapabilities* _caps_by_ver(const char *const ver) { if (!g_key_file_has_group(cache, ver)) { return NULL; } char *category = g_key_file_get_string(cache, ver, "category", NULL); char *type = g_key_file_get_string(cache, ver, "type", NULL); char *name = g_key_file_get_string(cache, ver, "name", NULL); char *software = g_key_file_get_string(cache, ver, "software", NULL); char *software_version = g_key_file_get_string(cache, ver, "software_version", NULL); char *os = g_key_file_get_string(cache, ver, "os", NULL); char *os_version = g_key_file_get_string(cache, ver, "os_version", NULL); gsize features_len = 0; gchar **features_list = g_key_file_get_string_list(cache, ver, "features", &features_len, NULL); GSList *features = NULL; if (features_list && features_len > 0) { int i; for (i = 0; i < features_len; i++) { features = g_slist_append(features, features_list[i]); } } EntityCapabilities *result = caps_create( category, type, name, software, software_version, os, os_version, features); g_free(category); g_free(type); g_free(name); g_free(software); g_free(software_version); g_free(os); g_free(os_version); if (features_list) { g_strfreev(features_list); } g_slist_free(features); return result; } static EntityCapabilities* _caps_by_jid(const char *const jid) { return g_hash_table_lookup(jid_to_caps, jid); } static EntityCapabilities* _caps_copy(EntityCapabilities *caps) { if (!caps) { return NULL; } const char *const categoty = caps->identity ? caps->identity->category : NULL; const char *const type = caps->identity ? caps->identity->type : NULL; const char *const name = caps->identity ? caps->identity->name : NULL; const char *const software = caps->software_version ? caps->software_version->software : NULL; const char *const software_version = caps->software_version ? caps->software_version->software_version : NULL; const char *const os = caps->software_version ? caps->software_version->os : NULL; const char *const os_version = caps->software_version ? caps->software_version->os_version : NULL; return caps_create(categoty, type, name, software, software_version, os, os_version, caps->features); } static void _disco_identity_destroy(DiscoIdentity *disco_identity) { if (disco_identity) { free(disco_identity->category); free(disco_identity->name); free(disco_identity->type); free(disco_identity); } } static void _software_version_destroy(SoftwareVersion *software_version) { if (software_version) { free(software_version->software); free(software_version->software_version); free(software_version->os); free(software_version->os_version); free(software_version); } } void caps_destroy(EntityCapabilities *caps) { if (caps) { _disco_identity_destroy(caps->identity); _software_version_destroy(caps->software_version); if (caps->features) { g_slist_free_full(caps->features, free); } free(caps); } } static void _save_cache(void) { gsize g_data_size; gchar *g_cache_data = g_key_file_to_data(cache, &g_data_size, NULL); g_file_set_contents(cache_loc, g_cache_data, g_data_size, NULL); g_chmod(cache_loc, S_IRUSR | S_IWUSR); g_free(g_cache_data); }


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