/** * Handling of rooms within matrix * * 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 "matrix-room.h" /* stdlib */ #include #include #include #include /* libpurple */ #include #include #include "libmatrix.h" #include "matrix-api.h" #include "matrix-e2e.h" #include "matrix-event.h" #include "matrix-json.h" #include "matrix-roommembers.h" #include "matrix-statetable.h" static gchar *_get_room_name(MatrixConnectionData *conn, PurpleConversation *conv); static const gchar *_get_my_display_name(PurpleConversation *conv); static MatrixConnectionData *_get_connection_data_from_conversation( PurpleConversation *conv) { return conv->account->gc->proto_data; } /****************************************************************************** * * conversation data */ /* * identifiers for purple_conversation_get/set_data */ /* a MatrixRoomStateEventTable * - see below */ #define PURPLE_CONV_DATA_STATE "state" /* a GList of MatrixRoomEvent * */ #define PURPLE_CONV_DATA_EVENT_QUEUE "queue" /* PurpleUtilFetchUrlData * */ #define PURPLE_CONV_DATA_ACTIVE_SEND "active_send" /* MatrixRoomMemberTable * - see below */ #define PURPLE_CONV_MEMBER_TABLE "member_table" /* PURPLE_CONV_FLAG_* */ #define PURPLE_CONV_FLAGS "flags" #define PURPLE_CONV_FLAG_NEEDS_NAME_UPDATE 0x1 /* Arbitrary limit on the size of an image to receive; should make * configurable. This is based on the worst-case assumption of a * 640x480 pixels, each with 3 bytes i.e. 900KiB. 640x480 is also the * server generated thumbnail size. */ static const size_t purple_max_media_size=640*480*3; /** * Get the member table for a room */ static MatrixRoomMemberTable *matrix_room_get_member_table( PurpleConversation *conv) { return purple_conversation_get_data(conv, PURPLE_CONV_MEMBER_TABLE); } /** * Get the state table for a room */ static MatrixRoomStateEventTable *matrix_room_get_state_table( PurpleConversation *conv) { return purple_conversation_get_data(conv, PURPLE_CONV_DATA_STATE); } static guint _get_flags(PurpleConversation *conv) { return GPOINTER_TO_UINT(purple_conversation_get_data(conv, PURPLE_CONV_FLAGS)); } static void _set_flags(PurpleConversation *conv, guint flags) { purple_conversation_set_data(conv, PURPLE_CONV_FLAGS, GUINT_TO_POINTER(flags)); } /****************************************************************************** * * room state handling */ /** * Update the name of the room in the buddy list and the chat window * * @param conv: conversation info */ static void _update_room_alias(PurpleConversation *conv) { gchar *room_name; MatrixConnectionData *conn = _get_connection_data_from_conversation(conv); PurpleChat *chat; guint flags; room_name = _get_room_name(conn, conv); /* update the buddy list entry */ chat = purple_blist_find_chat(conv->account, conv->name); /* we know there should be a buddy list entry for this room */ g_assert(chat != NULL); purple_blist_alias_chat(chat, room_name); /* explicitly update the conversation title. This will tend to happen * anyway, but possibly not until the conversation tab is next activated. */ if (strcmp(room_name, purple_conversation_get_title(conv))) purple_conversation_set_title(conv, room_name); g_free(room_name); flags = _get_flags(conv); flags &= ~PURPLE_CONV_FLAG_NEEDS_NAME_UPDATE; _set_flags(conv, flags); } static void _schedule_name_update(PurpleConversation *conv) { guint flags = _get_flags(conv); flags |= PURPLE_CONV_FLAG_NEEDS_NAME_UPDATE; _set_flags(conv, flags); purple_debug_info("matrixprpl", "scheduled deferred room name update\n"); } /** * Called when there is a change to the member list. Tells the MemberTable * about it. */ static void _on_member_change(PurpleConversation *conv, const gchar *member_user_id, MatrixRoomEvent *new_state) { MatrixRoomMemberTable *member_table; member_table = matrix_room_get_member_table(conv); matrix_roommembers_update_member(member_table, member_user_id, new_state->content); } /** * Called when there is a change to the topic. */ static void _on_topic_change(PurpleConversation *conv, MatrixRoomEvent *new_state) { PurpleConvChat *chat = PURPLE_CONV_CHAT(conv); purple_conv_chat_set_topic(chat, new_state->sender, matrix_json_object_get_string_member(new_state->content, "topic")); } /** * Called when there is a change list of typing userss. */ static void _on_typing(PurpleConversation *conv, MatrixRoomEvent *old_state, MatrixRoomEvent *new_state) { PurpleConvChat *chat = PURPLE_CONV_CHAT(conv); JsonArray *old_user_ids, *new_user_ids; PurpleConvChatBuddyFlags cbflags; guint i, j; guint old_len, new_len; MatrixRoomMemberTable *member_table; member_table = matrix_room_get_member_table(conv); if (old_state != NULL) { old_user_ids = matrix_json_object_get_array_member(old_state->content, "user_ids"); old_len = json_array_get_length(old_user_ids); } else { old_len = 0; } new_user_ids = matrix_json_object_get_array_member(new_state->content, "user_ids"); new_len = json_array_get_length(new_user_ids); for (i = 0; i < old_len; i++) { const gchar *user_id = json_array_get_string_element(old_user_ids, i); MatrixRoomMember *roommember; const gchar *displayname; gboolean new_user_found = FALSE; for (j = 0; j < new_len; j++) { const gchar *new_user_id = json_array_get_string_element(new_user_ids, j); if (g_strcmp0(user_id, new_user_id)) { // no change, remove it from the new list json_array_remove_element(new_user_ids, j); new_len--; new_user_found = TRUE; break; } } if (new_user_found == FALSE) { roommember = matrix_roommembers_lookup_member(member_table, user_id); if (roommember) { displayname = matrix_roommember_get_displayname(roommember); // in old list, not in new, i.e. stopped typing cbflags = purple_conv_chat_user_get_flags(chat, displayname); cbflags &= ~PURPLE_CBFLAGS_TYPING; purple_conv_chat_user_set_flags(chat, displayname, cbflags); } } } // everything left in new_user_ids is new typing events for (i = 0; i < new_len; i++) { const gchar *user_id = json_array_get_string_element(new_user_ids, i); MatrixRoomMember *roommember; const gchar *displayname; roommember = matrix_roommembers_lookup_member(member_table, user_id); if (roommember) { displayname = matrix_roommember_get_displayname(roommember); cbflags = purple_conv_chat_user_get_flags(chat, displayname); cbflags |= PURPLE_CBFLAGS_TYPING; purple_conv_chat_user_set_flags(chat, displayname, cbflags); } } } /** * Called when there is a state update. * * old_state may be NULL to indicate addition of a state * key. */ static void _on_state_update(const gchar *event_type, const gchar *state_key, MatrixRoomEvent *old_state, MatrixRoomEvent *new_state, gpointer user_data) { PurpleConversation *conv = user_data; g_assert(new_state != NULL); if(strcmp(event_type, "m.room.member") == 0) { _on_member_change(conv, state_key, new_state); /* we schedule a room name update here regardless of whether we end up * changing any members, because even changes to invited members can * affect the room name. */ _schedule_name_update(conv); } else if(strcmp(event_type, "m.room.alias") == 0 || strcmp(event_type, "m.room.canonical_alias") == 0 || strcmp(event_type, "m.room.name") == 0) { _schedule_name_update(conv); } else if (strcmp(event_type, "m.room.encryption") == 0) { purple_debug_info("matrixprpl", "Got m.room.encryption on_state_update\n"); } else if(strcmp(event_type, "m.typing") == 0) { _on_typing(conv, old_state, new_state); } else if(strcmp(event_type, "m.room.topic") == 0) { _on_topic_change(conv, new_state); } } void matrix_room_handle_state_event(struct _PurpleConversation *conv, JsonObject *json_event_obj) { MatrixRoomStateEventTable *state_table = matrix_room_get_state_table(conv); matrix_statetable_update(state_table, json_event_obj, _on_state_update, conv); } static gint _compare_member_user_id(const MatrixRoomMember *m, const gchar *user_id) { return g_strcmp0(matrix_roommember_get_user_id(m), user_id); } /** * figure out the best name for a room based on its members list * * @returns a string which should be freed */ static gchar *_get_room_name_from_members(MatrixConnectionData *conn, PurpleConversation *conv) { GList *tmp, *members; const gchar *member1; gchar *res; MatrixRoomMemberTable *member_table; member_table = matrix_room_get_member_table(conv); members = matrix_roommembers_get_active_members(member_table, TRUE); /* remove ourselves from the list */ tmp = g_list_find_custom(members, conn->user_id, (GCompareFunc)_compare_member_user_id); if(tmp != NULL) { members = g_list_delete_link(members, tmp); } if(members == NULL) { /* nobody else here! */ return NULL; } member1 = matrix_roommember_get_displayname(members->data); if(members->next == NULL) { /* one other person */ res = g_strdup(member1); } else if(members->next->next == NULL) { /* two other people */ const gchar *member2 = matrix_roommember_get_displayname( members->next->data); res = g_strdup_printf(_("%s and %s"), member1, member2); } else { int nmembers = g_list_length(members); res = g_strdup_printf(_("%s and %i others"), member1, nmembers); } g_list_free(members); return res; } /** * figure out the best name for a room * * @returns a string which should be freed */ static gchar *_get_room_name(MatrixConnectionData *conn, PurpleConversation *conv) { MatrixRoomStateEventTable *state_table = matrix_room_get_state_table(conv); gchar *res; /* first try to pick a name based on the official name / alias */ res = matrix_statetable_get_room_alias(state_table); if (res) return res; /* look for room members, and pick a name based on that */ res = _get_room_name_from_members(conn, conv); if (res) return res; /* failing all else, just use the room id */ return g_strdup(conv -> name); } /****************************************************************************** * * event queue handling */ static void _send_queued_event(PurpleConversation *conv); /** * Get the state table for a room */ static GList *_get_event_queue(PurpleConversation *conv) { return purple_conversation_get_data(conv, PURPLE_CONV_DATA_EVENT_QUEUE); } static void _event_send_complete(MatrixConnectionData *account, gpointer user_data, JsonNode *json_root, const char *raw_body, size_t raw_body_len, const char *content_type) { PurpleConversation *conv = user_data; JsonObject *response_object; const gchar *event_id; GList *event_queue; MatrixRoomEvent *event; response_object = matrix_json_node_get_object(json_root); event_id = matrix_json_object_get_string_member(response_object, "event_id"); purple_debug_info("matrixprpl", "Successfully sent event id %s\n", event_id); event_queue = _get_event_queue(conv); event = event_queue -> data; matrix_event_free(event); event_queue = g_list_remove(event_queue, event); purple_conversation_set_data(conv, PURPLE_CONV_DATA_EVENT_QUEUE, event_queue); _send_queued_event(conv); } /** * Unable to send event to homeserver */ void _event_send_error(MatrixConnectionData *ma, gpointer user_data, const gchar *error_message) { PurpleConversation *conv = user_data; matrix_api_error(ma, user_data, error_message); purple_conversation_set_data(conv, PURPLE_CONV_DATA_ACTIVE_SEND, NULL); /* for now, we leave the message queued. We should consider retrying. */ } /** * homeserver gave non-200 on event send. */ void _event_send_bad_response(MatrixConnectionData *ma, gpointer user_data, int http_response_code, JsonNode *json_root) { PurpleConversation *conv = user_data; matrix_api_bad_response(ma, user_data, http_response_code, json_root); purple_conversation_set_data(conv, PURPLE_CONV_DATA_ACTIVE_SEND, NULL); /* for now, we leave the message queued. We should consider retrying. */ } /**************************** Image handling *********************************/ /* Data structure passed from the event hook to the upload completion */ struct SendImageEventData { PurpleConversation *conv; MatrixRoomEvent *event; int imgstore_id; }; /** * Called back by matrix_api_upload_file after the image is uploaded. * We get a 'content_uri' identifying the uploaded file, and that's what * we put in the event. */ static void _image_upload_complete(MatrixConnectionData *ma, gpointer user_data, JsonNode *json_root, const char *raw_body, size_t raw_body_len, const char *content_type) { MatrixApiRequestData *fetch_data = NULL; struct SendImageEventData *sied = user_data; JsonObject *response_object = matrix_json_node_get_object(json_root); const gchar *content_uri; PurpleStoredImage *image = purple_imgstore_find_by_id(sied->imgstore_id); content_uri = matrix_json_object_get_string_member(response_object, "content_uri"); if (content_uri == NULL) { matrix_api_error(ma, sied->conv, "image_upload_complete: no content_uri"); purple_imgstore_unref(image); g_free(sied); return; } json_object_set_string_member(sied->event->content, "url", content_uri); fetch_data = matrix_api_send(ma, sied->conv->name, sied->event->event_type, sied->event->txn_id, sied->event->content, _event_send_complete, _event_send_error, _event_send_bad_response, sied->conv); purple_conversation_set_data(sied->conv, PURPLE_CONV_DATA_ACTIVE_SEND, fetch_data); purple_imgstore_unref(image); g_free(sied); } static void _image_upload_bad_response(MatrixConnectionData *ma, gpointer user_data, int http_response_code, JsonNode *json_root) { struct SendImageEventData *sied = user_data; PurpleStoredImage *image = purple_imgstore_find_by_id(sied->imgstore_id); matrix_api_bad_response(ma, sied->conv, http_response_code, json_root); purple_imgstore_unref(image); purple_conversation_set_data(sied->conv, PURPLE_CONV_DATA_ACTIVE_SEND, NULL); g_free(sied); /* More clear up with the message? */ } void _image_upload_error(MatrixConnectionData *ma, gpointer user_data, const gchar *error_message) { struct SendImageEventData *sied = user_data; PurpleStoredImage *image = purple_imgstore_find_by_id(sied->imgstore_id); matrix_api_error(ma, sied->conv, error_message); purple_imgstore_unref(image); purple_conversation_set_data(sied->conv, PURPLE_CONV_DATA_ACTIVE_SEND, NULL); g_free(sied); /* More clear up with the message? */ } /** * Return a mimetype based on some info; this should get replaced * with a glib/gio/gcontent_type_guess call if we can include it, * all other plugins do this manually. */ static const char *type_guess(PurpleStoredImage *image) { /* Copied off the code in libpurple's jabber module */ const char *ext = purple_imgstore_get_extension(image); if (strcmp(ext, "png") == 0) { return "image/png"; } else if (strcmp(ext, "gif") == 0) { return "image/gif"; } else if (strcmp(ext, "jpg") == 0) { return "image/jpeg"; } else if (strcmp(ext, "tif") == 0) { return "image/tif"; } else { return "image/x-icon"; /* or something... */ } } /** * Check if the declared content-type is an image type we recognise. */ static gboolean is_known_image_type(const char *content_type) { return !strcmp(content_type, "image/png") || !strcmp(content_type, "image/jpeg") || !strcmp(content_type, "image/gif") || !strcmp(content_type, "image/tiff"); } /* Structure hung off the event and used by _send_image_hook */ struct SendImageHookData { PurpleConversation *conv; int imgstore_id; }; /** * Called back by _send_queued_event for an image. */ static void _send_image_hook(MatrixRoomEvent *event, gboolean just_free) { MatrixApiRequestData *fetch_data; struct SendImageHookData *sihd = event->hook_data; /* Free'd by the callbacks from upload_file */ struct SendImageEventData *sied = g_new0(struct SendImageEventData, 1); PurpleConnection *pc; MatrixConnectionData *acct; int imgstore_id; PurpleStoredImage *image; size_t imgsize; const char *filename; const char *ctype; gconstpointer imgdata; if (just_free) { g_free(event->hook_data); return; } pc = sihd->conv->account->gc; acct = purple_connection_get_protocol_data(pc); imgstore_id = sihd->imgstore_id; image = purple_imgstore_find_by_id(imgstore_id); if (!image) return; imgsize = purple_imgstore_get_size(image); filename = purple_imgstore_get_filename(image); imgdata = purple_imgstore_get_data(image); ctype = type_guess(image); purple_debug_info("matrixprpl", "%s: image id %d for %s (type: %s)\n", __func__, sihd->imgstore_id, filename, ctype); sied->conv = sihd->conv; sied->imgstore_id = sihd->imgstore_id; sied->event = event; json_object_set_string_member(event->content, "body", filename); fetch_data = matrix_api_upload_file(acct, ctype, imgdata, imgsize, _image_upload_complete, _image_upload_error, _image_upload_bad_response, sied); if (fetch_data) { purple_conversation_set_data(sied->conv, PURPLE_CONV_DATA_ACTIVE_SEND, fetch_data); } } struct ReceiveImageData { PurpleConversation *conv; gint64 timestamp; const gchar *room_id; const gchar *sender_display_name; gchar *original_body; MatrixMediaCryptInfo *crypt; }; /* Deal with encrypted image data */ static void _image_download_complete_crypt(struct ReceiveImageData *rid, const char *raw_body, size_t raw_body_len) { void *decrypted = NULL; const char *fail_str = matrix_e2e_decrypt_media(rid->crypt, raw_body_len, raw_body, &decrypted); if (fail_str) { serv_got_chat_in(rid->conv->account->gc, g_str_hash(rid->room_id), rid->sender_display_name, PURPLE_MESSAGE_RECV, g_strdup_printf("%s (%s)", rid->original_body, fail_str), rid->timestamp / 1000); } else { int img_id = purple_imgstore_add_with_id(decrypted, raw_body_len, NULL); serv_got_chat_in(rid->conv->account->gc, g_str_hash(rid->room_id), rid->sender_display_name, PURPLE_MESSAGE_RECV | PURPLE_MESSAGE_IMAGES, g_strdup_printf("", img_id), rid->timestamp / 1000); } g_free(rid->crypt); g_free(rid->original_body); g_free(rid); } static void _image_download_complete(MatrixConnectionData *ma, gpointer user_data, JsonNode *json_root, const char *raw_body, size_t raw_body_len, const char *content_type) { struct ReceiveImageData *rid = user_data; if (rid->crypt) { return _image_download_complete_crypt(rid, raw_body, raw_body_len); } if (is_known_image_type(content_type)) { /* Excellent - something to work with */ int img_id = purple_imgstore_add_with_id(g_memdup(raw_body, raw_body_len), raw_body_len, NULL); serv_got_chat_in(rid->conv->account->gc, g_str_hash(rid->room_id), rid->sender_display_name, PURPLE_MESSAGE_RECV | PURPLE_MESSAGE_IMAGES, g_strdup_printf("", img_id), rid->timestamp / 1000); } else { serv_got_chat_in(rid->conv->account->gc, g_str_hash(rid->room_id), rid->sender_display_name, PURPLE_MESSAGE_RECV, g_strdup_printf("%s (unknown type %s)", rid->original_body, content_type), rid->timestamp / 1000); } purple_conversation_set_data(rid->conv, PURPLE_CONV_DATA_ACTIVE_SEND, NULL); g_free(rid->original_body); g_free(rid); } static void _image_download_bad_response(MatrixConnectionData *ma, gpointer user_data, int http_response_code, JsonNode *json_root) { struct ReceiveImageData *rid = user_data; gchar *escaped_body = purple_markup_escape_text(rid->original_body, -1); serv_got_chat_in(rid->conv->account->gc, g_str_hash(rid->room_id), rid->sender_display_name, PURPLE_MESSAGE_RECV, g_strdup_printf("%s (bad response to download image %d)", escaped_body, http_response_code), rid->timestamp / 1000); purple_conversation_set_data(rid->conv, PURPLE_CONV_DATA_ACTIVE_SEND, NULL); g_free(escaped_body); g_free(rid->crypt); g_free(rid->original_body); g_free(rid); } static void _image_download_error(MatrixConnectionData *ma, gpointer user_data, const gchar *error_message) { struct ReceiveImageData *rid = user_data; gchar *escaped_body = purple_markup_escape_text(rid->original_body, -1); serv_got_chat_in(rid->conv->account->gc, g_str_hash(rid->room_id), rid->sender_display_name, PURPLE_MESSAGE_RECV, g_strdup_printf("%s (failed to download image %s)", escaped_body, error_message), rid->timestamp / 1000); purple_conversation_set_data(rid->conv, PURPLE_CONV_DATA_ACTIVE_SEND, NULL); g_free(escaped_body); g_free(rid->crypt); g_free(rid->original_body); g_free(rid); } /* * Called from matrix_room_handle_timeline_event when it finds an m.video * or m.audio or m.file or m.image; msg_body has the fallback text, * json_content_object has the json for the content sub object */ static gboolean _handle_incoming_media(PurpleConversation *conv, const gint64 timestamp, const gchar *room_id, const gchar *sender_display_name, const gchar *msg_body, JsonObject *json_content_object, const gchar *msg_type) { MatrixConnectionData *conn = _get_connection_data_from_conversation(conv); MatrixApiRequestData *fetch_data = NULL; int is_image = !strcmp("m.image", msg_type); const gchar *url; GString *download_url; guint64 size = 0; const gchar *mime_type = "unknown"; JsonObject *json_file_obj = NULL; JsonObject *json_info_object; url = matrix_json_object_get_string_member(json_content_object, "url"); if (!url) { /* Could be a new style format used by the e2e world */ json_file_obj = matrix_json_object_get_object_member( json_content_object, "file"); if (json_file_obj) { url = matrix_json_object_get_string_member(json_file_obj, "url"); } if (!url) { /* That seems odd, oh well, no point in getting upset */ purple_debug_info("matrixprpl", "failed to get url for media\n"); return FALSE; } } download_url = get_download_url(conn->homeserver, url); /* the 'info' member is optional */ json_info_object = matrix_json_object_get_object_member(json_content_object, "info"); if (json_info_object) { /* OK, we've got some (optional) info */ size = matrix_json_object_get_int_member(json_info_object, "size"); mime_type = matrix_json_object_get_string_member(json_info_object, "mimetype"); purple_debug_info("matrixprpl", "media info good: %s of %" PRId64 "\n", mime_type, size); } serv_got_chat_in(conv->account->gc, g_str_hash(room_id), sender_display_name, PURPLE_MESSAGE_RECV, /* TODO convert size into a human readable format */ g_strdup_printf("%s (type %s size %" PRId64 ") %s", msg_body, mime_type, size, download_url->str), timestamp / 1000); /* m.audio is not supposed to have a thumbnail, handling completed */ if (!strcmp("m.audio", msg_type)) { return TRUE; } /* If a thumbnail_url is available and the thumbnail size is small, * download that. Otherwise, only for m.image, ask for a server generated * thumbnail. */ const gchar *thumb_url = ""; JsonObject *json_thumb_info; guint64 thumb_size = 0; /* r0.2.0 -> r0.3.0 * m.image content.thumb* -> content.info.thumb* * m.video - * m.file content.thumb* -> content.info.thumb* */ thumb_url = matrix_json_object_get_string_member(json_info_object, "thumbnail_url"); json_thumb_info = matrix_json_object_get_object_member(json_info_object, "thumbnail_info"); if (json_thumb_info) { thumb_size = matrix_json_object_get_int_member(json_thumb_info, "size"); } else { /* m.image and m.file had thumbnail_* members directly in the content object prior to r0.3.0 */ thumb_url = matrix_json_object_get_string_member(json_content_object, "thumbnail_url"); json_thumb_info = matrix_json_object_get_object_member(json_content_object, "thumbnail_info"); if (json_thumb_info) { thumb_size = matrix_json_object_get_int_member(json_thumb_info, "size"); } } if (is_image && (size > 0) && (size < purple_max_media_size)) { /* if an m.image is small, get that instead of the thumbnail */ thumb_url = url; thumb_size = size; } else if (json_file_obj) { /* In the world with file members, we've also got a thumbnail_file * member with potentially quite different data. */ JsonObject *tmp_file_obj = matrix_json_object_get_object_member( json_info_object, "thumbnail_file"); if (tmp_file_obj) { const char *tmp_url; tmp_url = matrix_json_object_get_string_member(tmp_file_obj, "url"); if (tmp_url) { thumb_url = tmp_url; json_file_obj = tmp_file_obj; } } } if (thumb_url || is_image) { struct ReceiveImageData *rid; rid = g_new0(struct ReceiveImageData, 1); rid->conv = conv; rid->timestamp = timestamp; rid->sender_display_name = sender_display_name; rid->room_id = room_id; rid->original_body = g_strdup(msg_body); if (json_file_obj) { /* It's almost certainly encrypted data, extract the info. * Note if it is then we must fetch the raw, we can't ask for the server * to generate a thumb. */ if (!matrix_e2e_parse_media_decrypt_info(&rid->crypt, json_file_obj)) { g_free(rid); return FALSE; } } if (thumb_url && (thumb_size > 0) && (thumb_size < purple_max_media_size)) { fetch_data = matrix_api_download_file(conn, thumb_url, purple_max_media_size, _image_download_complete, _image_download_error, _image_download_bad_response, rid); } else if (thumb_url && !rid->crypt) { /* Ask the server to generate a thumbnail of the thumbnail. * Useful to improve the chance of showing something when the * original thumbnail is too big. */ fetch_data = matrix_api_download_thumb(conn, thumb_url, purple_max_media_size, 640, 480, TRUE, /* Scaled */ _image_download_complete, _image_download_error, _image_download_bad_response, rid); } else if (!rid->crypt) { /* Ask the server to generate a thumbnail. Only for m.image. * TODO: Configure the size of thumbnails. * 640x480 is a good a width as any and reasonably likely to * fit in the byte size limit unless someone has a big long * tall png. */ fetch_data = matrix_api_download_thumb(conn, url, purple_max_media_size, 640, 480, TRUE, /* Scaled */ _image_download_complete, _image_download_error, _image_download_bad_response, rid); } purple_conversation_set_data(conv, PURPLE_CONV_DATA_ACTIVE_SEND, fetch_data); if (!fetch_data) { g_free(rid->crypt); } return fetch_data != NULL; } return TRUE; } /** * send the next queued event, provided the connection isn't shutting down. * * Updates PURPLE_CONV_DATA_ACTIVE_SEND either way. */ static void _send_queued_event(PurpleConversation *conv) { MatrixApiRequestData *fetch_data = NULL; MatrixConnectionData *acct; MatrixRoomEvent *event; PurpleConnection *pc = conv->account->gc; GList *queue; acct = purple_connection_get_protocol_data(pc); queue = _get_event_queue(conv); if(queue == NULL) { /* nothing else to send */ } else if(pc -> wants_to_die) { /* don't make any more requests if the connection is closing */ purple_debug_info("matrixprpl", "Not sending new events on dying" " connection"); } else { event = queue -> data; g_assert(event != NULL); if (event->hook) return event->hook(event, FALSE); purple_debug_info("matrixprpl", "Sending %s with txn id %s\n", event->event_type, event->txn_id); fetch_data = matrix_api_send(acct, conv->name, event->event_type, event->txn_id, event->content, _event_send_complete, _event_send_error, _event_send_bad_response, conv); } purple_conversation_set_data(conv, PURPLE_CONV_DATA_ACTIVE_SEND, fetch_data); } static void _enqueue_event(PurpleConversation *conv, const gchar *event_type, JsonObject *event_content, EventSendHook hook, void *hook_data) { MatrixRoomEvent *event; GList *event_queue; MatrixApiRequestData *active_send; event = matrix_event_new(event_type, event_content); event->txn_id = g_strdup_printf("%"G_GINT64_FORMAT"%"G_GUINT32_FORMAT, g_get_monotonic_time(), g_random_int()); event->hook = hook; event->hook_data = hook_data; event_queue = _get_event_queue(conv); event_queue = g_list_append(event_queue, event); purple_conversation_set_data(conv, PURPLE_CONV_DATA_EVENT_QUEUE, event_queue); purple_debug_info("matrixprpl", "Enqueued %s with txn id %s\n", event_type, event->txn_id); active_send = purple_conversation_get_data(conv, PURPLE_CONV_DATA_ACTIVE_SEND); if(active_send != NULL) { purple_debug_info("matrixprpl", "Event send is already in progress\n"); } else { _send_queued_event(conv); } } /** * If there is an event send in progress, cancel it */ static void _cancel_event_send(PurpleConversation *conv) { MatrixApiRequestData *active_send = purple_conversation_get_data(conv, PURPLE_CONV_DATA_ACTIVE_SEND); if(active_send == NULL) return; purple_debug_info("matrixprpl", "Cancelling event send"); matrix_api_cancel(active_send); g_assert(purple_conversation_get_data(conv, PURPLE_CONV_DATA_ACTIVE_SEND) == NULL); } /*****************************************************************************/ void matrix_room_handle_timeline_event(PurpleConversation *conv, JsonObject *json_event_obj) { const gchar *event_type, *sender_id, *transaction_id; gint64 timestamp; JsonObject *json_content_obj; JsonObject *json_unsigned_obj; const gchar *room_id, *msg_body, *msg_type; gchar *tmp_body = NULL; gchar *escaped_body = NULL; PurpleMessageFlags flags; JsonParser *decrypted_parser = NULL; const gchar *sender_display_name; MatrixRoomMember *sender = NULL; room_id = conv->name; event_type = matrix_json_object_get_string_member( json_event_obj, "type"); sender_id = matrix_json_object_get_string_member(json_event_obj, "sender"); timestamp = matrix_json_object_get_int_member(json_event_obj, "origin_server_ts"); json_content_obj = matrix_json_object_get_object_member( json_event_obj, "content"); if(event_type == NULL) { purple_debug_warning("matrixprpl", "event missing type field"); return; } if(!strcmp(event_type, "m.room.encrypted")) { purple_debug_info("matrixprpl", "Got an m.room.encrypted!\n"); decrypted_parser = matrix_e2e_decrypt_room(conv, json_event_obj); if (!decrypted_parser) { purple_debug_warning("matrixprpl", "Failed to decrypt m.room.encrypted"); return; } JsonNode *decrypted_node = json_parser_get_root(decrypted_parser); JsonObject *decrypted_body; decrypted_body = matrix_json_node_get_object(decrypted_node); event_type = matrix_json_object_get_string_member(decrypted_body, "type"); json_content_obj = matrix_json_object_get_object_member(decrypted_body, "content"); // TODO: Check room_id matches // TODO: Add some info about device trust etc if (!event_type || !json_content_obj) { purple_debug_warning("matrixprpl", "Failed to find members of decrypted json"); g_object_unref(decrypted_parser); return; } } if(strcmp(event_type, "m.room.message") != 0) { purple_debug_info("matrixprpl", "ignoring unknown room event %s\n", event_type); return; } msg_body = matrix_json_object_get_string_member(json_content_obj, "body"); if(msg_body == NULL) { purple_debug_warning("matrixprpl", "no body in message event\n"); return; } msg_type = matrix_json_object_get_string_member(json_content_obj, "msgtype"); if(msg_type == NULL) { purple_debug_warning("matrixprpl", "no msgtype in message event\n"); return; } json_unsigned_obj = matrix_json_object_get_object_member(json_event_obj, "unsigned"); transaction_id = matrix_json_object_get_string_member(json_unsigned_obj, "transaction_id"); /* if it has a transaction id, it's an echo of a message we sent. * We shouldn't really just ignore it, but I'm not sure how to update a sent * message. */ if(transaction_id != NULL) { purple_debug_info("matrixprpl", "got remote echo %s in %s\n", msg_body, room_id); return; } if(sender_id != NULL) { MatrixRoomMemberTable *table = matrix_room_get_member_table(conv); sender = matrix_roommembers_lookup_member(table, sender_id); } if (sender != NULL) { sender_display_name = matrix_roommember_get_displayname(sender); } else { sender_display_name = ""; } if (!strcmp(msg_type, "m.emote")) { tmp_body = g_strdup_printf("/me %s", msg_body); } else if ((!strcmp(msg_type, "m.video")) || (!strcmp(msg_type, "m.audio")) || \ (!strcmp(msg_type, "m.file")) || (!strcmp(msg_type, "m.image"))) { if (_handle_incoming_media(conv, timestamp, room_id, sender_display_name, msg_body, json_content_obj, msg_type)) { return; } /* Fall through - we couldn't handle the media, treat as text */ } flags = PURPLE_MESSAGE_RECV; gboolean prefer_markdown = purple_account_get_bool(conv->account, PRPL_ACCOUNT_OPT_PREFER_MARKDOWN, FALSE); if (!prefer_markdown) { if (purple_strequal(matrix_json_object_get_string_member(json_content_obj, "format"), "org.matrix.custom.html")) { escaped_body = g_strdup(matrix_json_object_get_string_member(json_content_obj, "formatted_body")); } else { escaped_body = purple_markup_escape_text(tmp_body ? tmp_body : msg_body, -1); } } else { escaped_body = purple_markup_escape_text(tmp_body ? tmp_body : msg_body, -1); } g_free(tmp_body); purple_debug_info("matrixprpl", "got message from %s in %s\n", sender_id, room_id); serv_got_chat_in(conv->account->gc, g_str_hash(room_id), sender_display_name, flags, escaped_body, timestamp / 1000); g_free(escaped_body); if (decrypted_parser) { g_object_unref(decrypted_parser); } } PurpleConversation *matrix_room_create_conversation( PurpleConnection *pc, const gchar *room_id) { PurpleConversation *conv; MatrixRoomStateEventTable *state_table; MatrixRoomMemberTable *member_table; purple_debug_info("matrixprpl", "New room %s\n", room_id); /* tell purple we have joined this chat */ conv = serv_got_joined_chat(pc, g_str_hash(room_id), room_id); /* set our data on it */ state_table = matrix_statetable_new(); member_table = matrix_roommembers_new_table(); purple_conversation_set_data(conv, PURPLE_CONV_DATA_EVENT_QUEUE, NULL); purple_conversation_set_data(conv, PURPLE_CONV_DATA_ACTIVE_SEND, NULL); purple_conversation_set_data(conv, PURPLE_CONV_DATA_STATE, state_table); purple_conversation_set_data(conv, PURPLE_CONV_MEMBER_TABLE, member_table); return conv; } /** * Leave a chat: notify the server that we are leaving, and (ultimately) * free the memory structures */ void matrix_room_leave_chat(PurpleConversation *conv) { MatrixConnectionData *conn; MatrixRoomStateEventTable *state_table; GList *event_queue; MatrixRoomMemberTable *member_table; conn = _get_connection_data_from_conversation(conv); _cancel_event_send(conv); matrix_api_leave_room(conn, conv->name, NULL, NULL, NULL, NULL); /* At this point, we have no confirmation that the 'leave' request will * be successful (nor that it has even started), so it's questionable * whether we can/should actually free all of the room state. * * On the other hand, we don't have any mechanism for telling purple that * we haven't really left the room, and if the leave request does fail, * we'll set the error flag on the connection, which will eventually * result in pidgin flagging the connection as failed; things will * hopefully then get resynced when the user reconnects. */ state_table = matrix_room_get_state_table(conv); matrix_statetable_destroy(state_table); purple_conversation_set_data(conv, PURPLE_CONV_DATA_STATE, NULL); member_table = matrix_room_get_member_table(conv); matrix_roommembers_free_table(member_table); purple_conversation_set_data(conv, PURPLE_CONV_MEMBER_TABLE, NULL); event_queue = _get_event_queue(conv); if(event_queue != NULL) { g_list_free_full(event_queue, (GDestroyNotify)matrix_event_free); purple_conversation_set_data(conv, PURPLE_CONV_DATA_EVENT_QUEUE, NULL); } matrix_e2e_cleanup_conversation(conv); } /* ***************************************************************************** * * Tracking of member additions/removals. * * We don't tell libpurple about new arrivals immediately, because that is * inefficient and takes ages on a big room like Matrix HQ. Instead, the * MatrixRoomMemberTable builds up a list of changes, and we then go through * those changes after processing all of the state changes in a /sync. * * This introduces a complexity in that we need to track what we've told purple * the displayname of the user is (for instance, member1 leaves a channel, * meaning that there is no longer a clash of displaynames, so member2 * can be renamed: we need to know what we previously told libpurple member2 was * called). We do this by setting the member's opaque data to the name we gave * to libpurple. */ static void _on_member_deleted(MatrixRoomMember *member) { gchar *displayname = matrix_roommember_get_opaque_data(member); g_free(displayname); matrix_roommember_set_opaque_data(member, NULL, NULL); } /** * Tell libpurple about newly-arrived members */ static void _handle_new_members(PurpleConversation *conv, gboolean announce_arrivals) { PurpleConvChat *chat = PURPLE_CONV_CHAT(conv); MatrixRoomMemberTable *table = matrix_room_get_member_table(conv); GList *names = NULL, *flags = NULL; GSList *members; members = matrix_roommembers_get_new_members(table); while(members != NULL) { MatrixRoomMember *member = members->data; const gchar *displayname; GSList *tmp; displayname = matrix_roommember_get_opaque_data(member); g_assert(displayname == NULL); displayname = matrix_roommember_get_displayname(member); matrix_roommember_set_opaque_data(member, g_strdup(displayname), _on_member_deleted); names = g_list_prepend(names, (gpointer)displayname); flags = g_list_prepend(flags, GINT_TO_POINTER(0)); tmp = members; members = members->next; g_slist_free_1(tmp); } if(names) { purple_conv_chat_add_users(chat, names, NULL, flags, announce_arrivals); g_list_free(names); g_list_free(flags); } } /** * Tell libpurple about renamed members */ void _handle_renamed_members(PurpleConversation *conv) { PurpleConvChat *chat = PURPLE_CONV_CHAT(conv); MatrixRoomMemberTable *table = matrix_room_get_member_table(conv); GSList *members; members = matrix_roommembers_get_renamed_members(table); while(members != NULL) { MatrixRoomMember *member = members->data; gchar *current_displayname; const gchar *new_displayname; GSList *tmp; current_displayname = matrix_roommember_get_opaque_data(member); g_assert(current_displayname != NULL); new_displayname = matrix_roommember_get_displayname(member); purple_conv_chat_rename_user(chat, current_displayname, new_displayname); matrix_roommember_set_opaque_data(member, g_strdup(new_displayname), _on_member_deleted); g_free(current_displayname); tmp = members; members = members->next; g_slist_free_1(tmp); } } /** * Tell libpurple about departed members */ void _handle_left_members(PurpleConversation *conv) { PurpleConvChat *chat = PURPLE_CONV_CHAT(conv); MatrixRoomMemberTable *table = matrix_room_get_member_table(conv); GSList *members; members = matrix_roommembers_get_left_members(table); while(members != NULL) { MatrixRoomMember *member = members->data; gchar *current_displayname; GSList *tmp; current_displayname = matrix_roommember_get_opaque_data(member); g_assert(current_displayname != NULL); purple_conv_chat_remove_user(chat, current_displayname, NULL); g_free(current_displayname); matrix_roommember_set_opaque_data(member, NULL, NULL); tmp = members; members = members->next; g_slist_free_1(tmp); } } static void _update_user_list(PurpleConversation *conv, gboolean announce_arrivals) { _handle_new_members(conv, announce_arrivals); _handle_renamed_members(conv); _handle_left_members(conv); } /** * Get the userid of a member of a room, given their displayname * * @returns a string, which will be freed by the caller, or null if not known */ gchar *matrix_room_displayname_to_userid(struct _PurpleConversation *conv, const gchar *who) { /* TODO: make this more efficient */ MatrixRoomMemberTable *table = matrix_room_get_member_table(conv); GList *members, *ptr; gchar *result = NULL; members = matrix_roommembers_get_active_members(table, TRUE); for(ptr = members; ptr != NULL; ptr = ptr->next) { MatrixRoomMember *member = ptr->data; const gchar *displayname = matrix_roommember_get_opaque_data(member); if(g_strcmp0(displayname, who) == 0) { result = g_strdup(matrix_roommember_get_user_id(member)); break; } } g_list_free(members); return result; } /* ************************************************************************** */ void matrix_room_complete_state_update(PurpleConversation *conv, gboolean announce_arrivals) { _update_user_list(conv, announce_arrivals); if(_get_flags(conv) & PURPLE_CONV_FLAG_NEEDS_NAME_UPDATE) _update_room_alias(conv); } static const gchar *_get_my_display_name(PurpleConversation *conv) { MatrixConnectionData *conn = _get_connection_data_from_conversation(conv); MatrixRoomMemberTable *member_table = matrix_room_get_member_table(conv); MatrixRoomMember *me; me = matrix_roommembers_lookup_member(member_table, conn->user_id); if(me == NULL) return NULL; else return matrix_roommember_get_displayname(me); } /** * Send an image message in a room */ void matrix_room_send_image(PurpleConversation *conv, int imgstore_id, const gchar *message) { JsonObject *content; struct SendImageHookData *sihd; if (!imgstore_id) return; /* This is the hook_data on the event, it gets free'd by the event * code when the event is free'd */ sihd = g_new0(struct SendImageHookData, 1); /* We can't send this event until we've uploaded the image because * the event contents including the file ID that we get back from * the upload process. * Our hook gets called back when we're ready to send the event, * then we do the upload. */ content = json_object_new(); json_object_set_string_member(content, "msgtype", "m.image"); sihd->imgstore_id = imgstore_id; sihd->conv = conv; purple_debug_info("matrixprpl", "%s: image id=%d\n", __func__, imgstore_id); _enqueue_event(conv, "m.room.message", content, _send_image_hook, sihd); json_object_unref(content); purple_conv_chat_write(PURPLE_CONV_CHAT(conv), _get_my_display_name(conv), message, PURPLE_MESSAGE_SEND | PURPLE_MESSAGE_IMAGES, g_get_real_time()/1000/1000); } /** * Sends a typing notification in a room with a 25s timeout */ void matrix_room_send_typing(PurpleConversation *conv, gboolean typing) { MatrixConnectionData *acct; PurpleConnection *pc = conv->account->gc; acct = purple_connection_get_protocol_data(pc); // Don't check callbacks as it's inconsequential whether typing notifications go through matrix_api_typing(acct, conv->name, typing, 25000, NULL, NULL, NULL, NULL); } /** * Send a message in a room */ void matrix_room_send_message(PurpleConversation *conv, const gchar *message) { JsonObject *content; PurpleConvChat *chat = PURPLE_CONV_CHAT(conv); const char *type_string = "m.text"; const char *image_start, *image_end; gchar *message_to_send, *message_dup; GData *image_attribs; /* Matrix doesn't have messages that have both images and text in, so * we have to split this message if it has an image. */ if (purple_markup_find_tag("img", message, &image_start, &image_end, &image_attribs)) { int imgstore_id = atoi(g_datalist_get_data(&image_attribs, "id")); gchar *image_message; purple_imgstore_ref_by_id(imgstore_id); if (image_start != message) { gchar *prefix = g_strndup(message, image_start - message); matrix_room_send_message(conv, prefix); g_free(prefix); } image_message = g_strndup(image_start, 1+(image_end-image_start)); matrix_room_send_image(conv, imgstore_id, image_message); g_datalist_clear(&image_attribs); g_free(image_message); /* Anything after the image? */ if (image_end[1]) { matrix_room_send_message(conv, image_end + 1); } return; } /* Matrix messages are JSON-encoded, so there's no need to HTML/XML- * escape the message body. Matrix clients don't unescape the bodies * either, so they end up seeing " instead of " */ message_dup = g_strdup(message); message_to_send = purple_markup_strip_html(message_dup); if (purple_message_meify(message_to_send, -1)) { type_string = "m.emote"; purple_message_meify(message_dup, -1); } content = json_object_new(); json_object_set_string_member(content, "msgtype", type_string); json_object_set_string_member(content, "body", message_to_send); json_object_set_string_member(content, "formatted_body", message_dup); json_object_set_string_member(content, "format", "org.matrix.custom.html"); _enqueue_event(conv, "m.room.message", content, NULL, NULL); json_object_unref(content); purple_conv_chat_write(chat, _get_my_display_name(conv), message_dup, PURPLE_MESSAGE_SEND, g_get_real_time()/1000/1000); g_free(message_to_send); g_free(message_dup); }