/***************************************************************************\ * * * BitlBee - An IRC to IM gateway * * Simple module to facilitate twitter functionality. * * * * Copyright 2009-2010 Geert Mulders * * Copyright 2010-2011 Wilmer van der Gaast * * * * This library is free software; you can redistribute it and/or * * modify it under the terms of the GNU Lesser General Public * * License as published by the Free Software Foundation, version * * 2.1. * * * * This library 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 * * Lesser General Public License for more details. * * * * You should have received a copy of the GNU Lesser General Public License * * along with this library; if not, write to the Free Software Foundation, * * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * * * ****************************************************************************/ /* For strptime(): */ #if(__sun) #else #define _XOPEN_SOURCE #endif #include "twitter_http.h" #include "twitter.h" #include "bitlbee.h" #include "url.h" #include "misc.h" #include "base64.h" #include "xmltree.h" #include "twitter_lib.h" #include #include /* GLib < 2.12.0 doesn't have g_ascii_strtoll(), work around using system strtoll(). */ /* GLib < 2.12.4 can be buggy: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=488013 */ #if !GLIB_CHECK_VERSION(2,12,5) #include #include #define g_ascii_strtoll strtoll #endif #define TXL_STATUS 1 #define TXL_USER 2 #define TXL_ID 3 struct twitter_xml_list { int type; gint64 next_cursor; GSList *list; }; struct twitter_xml_user { char *name; char *screen_name; }; struct twitter_xml_status { time_t created_at; char *text; struct twitter_xml_user *user; guint64 id, reply_to; }; static void twitter_groupchat_init(struct im_connection *ic); /** * Frees a twitter_xml_user struct. */ static void txu_free(struct twitter_xml_user *txu) { if (txu == NULL) return; g_free(txu->name); g_free(txu->screen_name); g_free(txu); } /** * Frees a twitter_xml_status struct. */ static void txs_free(struct twitter_xml_status *txs) { if (txs == NULL) return; g_free(txs->text); txu_free(txs->user); g_free(txs); } /** * Free a twitter_xml_list struct. * type is the type of list the struct holds. */ static void txl_free(struct twitter_xml_list *txl) { GSList *l; if (txl == NULL) return; for (l = txl->list; l; l = g_slist_next(l)) { if (txl->type == TXL_STATUS) { txs_free((struct twitter_xml_status *) l->data); } else if (txl->type == TXL_ID) { g_free(l->data); } else if (txl->type == TXL_USER) { txu_free(l->data); } } g_slist_free(txl->list); g_free(txl); } /** * Compare status elements */ static gint twitter_compare_elements(gconstpointer a, gconstpointer b) { struct twitter_xml_status *a_status = (struct twitter_xml_status *) a; struct twitter_xml_status *b_status = (struct twitter_xml_status *) b; if (a_status->created_at < b_status->created_at) { return -1; } else if (a_status->created_at > b_status->created_at) { return 1; } else { return 0; } } /** * Add a buddy if it is not already added, set the status to logged in. */ static void twitter_add_buddy(struct im_connection *ic, char *name, const char *fullname) { struct twitter_data *td = ic->proto_data; // Check if the buddy is already in the buddy list. if (!bee_user_by_handle(ic->bee, ic, name)) { char *mode = set_getstr(&ic->acc->set, "mode"); // The buddy is not in the list, add the buddy and set the status to logged in. imcb_add_buddy(ic, name, NULL); imcb_rename_buddy(ic, name, fullname); if (g_strcasecmp(mode, "chat") == 0) { /* Necessary so that nicks always get translated to the exact Twitter username. */ imcb_buddy_nick_hint(ic, name, name); imcb_chat_add_buddy(td->timeline_gc, name); } else if (g_strcasecmp(mode, "many") == 0) imcb_buddy_status(ic, name, OPT_LOGGED_IN, NULL, NULL); } } /* Warning: May return a malloc()ed value, which will be free()d on the next call. Only for short-term use. NOT THREADSAFE! */ char *twitter_parse_error(struct http_request *req) { static char *ret = NULL; struct xt_parser *xp = NULL; struct xt_node *node, *err; g_free(ret); ret = NULL; if (req->body_size > 0) { xp = xt_new(NULL, NULL); xt_feed(xp, req->reply_body, req->body_size); for (node = xp->root; node; node = node->next) if ((err = xt_find_node(node->children, "error")) && err->text_len > 0) { ret = g_strdup_printf("%s (%s)", req->status_string, err->text); break; } xt_free(xp); } return ret ? ret : req->status_string; } static void twitter_http_get_friends_ids(struct http_request *req); /** * Get the friends ids. */ void twitter_get_friends_ids(struct im_connection *ic, gint64 next_cursor) { // Primitive, but hey! It works... char *args[2]; args[0] = "cursor"; args[1] = g_strdup_printf("%lld", (long long) next_cursor); twitter_http(ic, TWITTER_FRIENDS_IDS_URL, twitter_http_get_friends_ids, ic, 0, args, 2); g_free(args[1]); } /** * Function to help fill a list. */ static xt_status twitter_xt_next_cursor(struct xt_node *node, struct twitter_xml_list *txl) { char *end = NULL; if (node->text) txl->next_cursor = g_ascii_strtoll(node->text, &end, 10); if (end == NULL) txl->next_cursor = -1; return XT_HANDLED; } /** * Fill a list of ids. */ static xt_status twitter_xt_get_friends_id_list(struct xt_node *node, struct twitter_xml_list *txl) { struct xt_node *child; // Set the list type. txl->type = TXL_ID; // The root node should hold the list of statuses // Walk over the nodes children. for (child = node->children; child; child = child->next) { if (g_strcasecmp("ids", child->name) == 0) { struct xt_node *idc; for (idc = child->children; idc; idc = idc->next) if (g_strcasecmp(idc->name, "id") == 0) txl->list = g_slist_prepend(txl->list, g_memdup(idc->text, idc->text_len + 1)); } else if (g_strcasecmp("next_cursor", child->name) == 0) { twitter_xt_next_cursor(child, txl); } } return XT_HANDLED; } static void twitter_get_users_lookup(struct im_connection *ic); /** * Callback for getting the friends ids. */ static void twitter_http_get_friends_ids(struct http_request *req) { struct im_connection *ic; struct xt_parser *parser; struct twitter_xml_list *txl; struct twitter_data *td; ic = req->data; // Check if the connection is still active. if (!g_slist_find(twitter_connections, ic)) return; td = ic->proto_data; // Check if the HTTP request went well. More strict checks as this is // the first request we do in a session. if (req->status_code == 401) { imcb_error(ic, "Authentication failure"); imc_logout(ic, FALSE); return; } else if (req->status_code != 200) { // It didn't go well, output the error and return. imcb_error(ic, "Could not retrieve %s: %s", TWITTER_FRIENDS_IDS_URL, twitter_parse_error(req)); imc_logout(ic, TRUE); return; } else { td->http_fails = 0; } /* Create the room now that we "logged in". */ if (!td->timeline_gc && g_strcasecmp(set_getstr(&ic->acc->set, "mode"), "chat") == 0) twitter_groupchat_init(ic); txl = g_new0(struct twitter_xml_list, 1); txl->list = td->follow_ids; // Parse the data. parser = xt_new(NULL, txl); xt_feed(parser, req->reply_body, req->body_size); twitter_xt_get_friends_id_list(parser->root, txl); xt_free(parser); td->follow_ids = txl->list; if (txl->next_cursor) /* These were just numbers. Up to 4000 in a response AFAIK so if we get here we may be using a spammer account. \o/ */ twitter_get_friends_ids(ic, txl->next_cursor); else /* Now to convert all those numbers into names.. */ twitter_get_users_lookup(ic); txl->list = NULL; txl_free(txl); } static xt_status twitter_xt_get_users(struct xt_node *node, struct twitter_xml_list *txl); static void twitter_http_get_users_lookup(struct http_request *req); static void twitter_get_users_lookup(struct im_connection *ic) { struct twitter_data *td = ic->proto_data; char *args[2] = { "user_id", NULL, }; GString *ids = g_string_new(""); int i; /* We can request up to 100 users at a time. */ for (i = 0; i < 100 && td->follow_ids; i ++) { g_string_append_printf(ids, ",%s", (char*) td->follow_ids->data); g_free(td->follow_ids->data); td->follow_ids = g_slist_remove(td->follow_ids, td->follow_ids->data); } if (ids->len > 0) { args[1] = ids->str + 1; /* POST, because I think ids can be up to 1KB long. */ twitter_http(ic, TWITTER_USERS_LOOKUP_URL, twitter_http_get_users_lookup, ic, 1, args, 2); } else { /* We have all users. Continue with login. (Get statuses.) */ td->flags |= TWITTER_HAVE_FRIENDS; twitter_login_finish(ic); } g_string_free(ids, TRUE); } /** * Callback for getting (twitter)friends... * * Be afraid, be very afraid! This function will potentially add hundreds of "friends". "Who has * hundreds of friends?" you wonder? You probably not, since you are reading the source of * BitlBee... Get a life and meet new people! */ static void twitter_http_get_users_lookup(struct http_request *req) { struct im_connection *ic = req->data; struct twitter_data *td; struct xt_parser *parser; struct twitter_xml_list *txl; GSList *l = NULL; struct twitter_xml_user *user; // Check if the connection is still active. if (!g_slist_find(twitter_connections, ic)) return; td = ic->proto_data; if (req->status_code != 200) { // It didn't go well, output the error and return. imcb_error(ic, "Could not retrieve %s: %s", TWITTER_USERS_LOOKUP_URL, twitter_parse_error(req)); imc_logout(ic, TRUE); return; } else { td->http_fails = 0; } txl = g_new0(struct twitter_xml_list, 1); txl->list = NULL; // Parse the data. parser = xt_new(NULL, txl); xt_feed(parser, req->reply_body, req->body_size); // Get the user list from the parsed xml feed. twitter_xt_get_users(parser->root, txl); xt_free(parser); // Add the users as buddies. for (l = txl->list; l; l = g_slist_next(l)) { user = l->data; twitter_add_buddy(ic, user->screen_name, user->name); } // Free the structure. txl_free(txl); twitter_get_users_lookup(ic); } /** * Function to fill a twitter_xml_user struct. * It sets: * - the name and * - the screen_name. */ static xt_status twitter_xt_get_user(struct xt_node *node, struct twitter_xml_user *txu) { struct xt_node *child; // Walk over the nodes children. for (child = node->children; child; child = child->next) { if (g_strcasecmp("name", child->name) == 0) { txu->name = g_memdup(child->text, child->text_len + 1); } else if (g_strcasecmp("screen_name", child->name) == 0) { txu->screen_name = g_memdup(child->text, child->text_len + 1); } } return XT_HANDLED; } /** * Function to fill a twitter_xml_list struct. * It sets: * - all s from the element. */ static xt_status twitter_xt_get_users(struct xt_node *node, struct twitter_xml_list *txl) { struct twitter_xml_user *txu; struct xt_node *child; // Set the type of the list. txl->type = TXL_USER; // The root node should hold the list of users // Walk over the nodes children. for (child = node->children; child; child = child->next) { if (g_strcasecmp("user", child->name) == 0) { txu = g_new0(struct twitter_xml_user, 1); twitter_xt_get_user(child, txu); // Put the item in the front of the list. txl->list = g_slist_prepend(txl->list, txu); } } return XT_HANDLED; } #ifdef __GLIBC__ #define TWITTER_TIME_FORMAT "%a %b %d %H:%M:%S %z %Y" #else #define TWITTER_TIME_FORMAT "%a %b %d %H:%M:%S +0000 %Y" #endif /** * Function to fill a twitter_xml_status struct. * It sets: * - the status text and * - the created_at timestamp and * - the status id and * - the user in a twitter_xml_user struct. */ static xt_status twitter_xt_get_status(struct xt_node *node, struct twitter_xml_status *txs) { struct xt_node *child, *rt = NULL; // Walk over the nodes children. for (child = node->children; child; child = child->next) { if (g_strcasecmp("text", child->name) == 0) { txs->text = g_memdup(child->text, child->text_len + 1); } else if (g_strcasecmp("retweeted_status", child->name) == 0) { rt = child; } else if (g_strcasecmp("created_at", child->name) == 0) { struct tm parsed; /* Very sensitive to changes to the formatting of this field. :-( Also assumes the timezone used is UTC since C time handling functions suck. */ if (strptime(child->text, TWITTER_TIME_FORMAT, &parsed) != NULL) txs->created_at = mktime_utc(&parsed); } else if (g_strcasecmp("user", child->name) == 0) { txs->user = g_new0(struct twitter_xml_user, 1); twitter_xt_get_user(child, txs->user); } else if (g_strcasecmp("id", child->name) == 0) { txs->id = g_ascii_strtoull(child->text, NULL, 10); } else if (g_strcasecmp("in_reply_to_status_id", child->name) == 0) { txs->reply_to = g_ascii_strtoull(child->text, NULL, 10); } } /* If it's a (truncated) retweet, get the original. Even if the API claims it wasn't truncated because it may be lying. */ if (rt) { struct twitter_xml_status *rtxs = g_new0(struct twitter_xml_status, 1); if (twitter_xt_get_status(rt, rtxs) != XT_HANDLED) { txs_free(rtxs); return XT_HANDLED; } g_free(txs->text); txs->text = g_strdup_printf("RT @%s: %s", rtxs->user->screen_name, rtxs->text); txs_free(rtxs); } else { struct xt_node *urls, *url; urls = xt_find_path(node, "entities/urls"); for (url = urls ? urls->children : NULL; url; url = url->next) { /* "short" is a reserved word. :-P */ struct xt_node *kort = xt_find_node(url->children, "url"); struct xt_node *disp = xt_find_node(url->children, "display_url"); char *pos, *new; if (!kort || !kort->text || !disp || !disp->text || !(pos = strstr(txs->text, kort->text))) continue; *pos = '\0'; new = g_strdup_printf("%s%s <%s>%s", txs->text, kort->text, disp->text, pos + strlen(kort->text)); g_free(txs->text); txs->text = new; } } return XT_HANDLED; } /** * Function to fill a twitter_xml_list struct. * It sets: * - all es within the element and * - the next_cursor. */ static xt_status twitter_xt_get_status_list(struct im_connection *ic, struct xt_node *node, struct twitter_xml_list *txl) { struct twitter_xml_status *txs; struct xt_node *child; bee_user_t *bu; // Set the type of the list. txl->type = TXL_STATUS; // The root node should hold the list of statuses // Walk over the nodes children. for (child = node->children; child; child = child->next) { if (g_strcasecmp("status", child->name) == 0) { txs = g_new0(struct twitter_xml_status, 1); twitter_xt_get_status(child, txs); // Put the item in the front of the list. txl->list = g_slist_prepend(txl->list, txs); if (txs->user && txs->user->screen_name && (bu = bee_user_by_handle(ic->bee, ic, txs->user->screen_name))) { struct twitter_user_data *tud = bu->data; if (txs->id > tud->last_id) { tud->last_id = txs->id; tud->last_time = txs->created_at; } } } else if (g_strcasecmp("next_cursor", child->name) == 0) { twitter_xt_next_cursor(child, txl); } } return XT_HANDLED; } static char *twitter_msg_add_id(struct im_connection *ic, struct twitter_xml_status *txs, const char *prefix) { struct twitter_data *td = ic->proto_data; char *ret = NULL; if (!set_getbool(&ic->acc->set, "show_ids")) { if (*prefix) return g_strconcat(prefix, txs->text, NULL); else return NULL; } td->log[td->log_id].id = txs->id; td->log[td->log_id].bu = bee_user_by_handle(ic->bee, ic, txs->user->screen_name); if (txs->reply_to) { int i; for (i = 0; i < TWITTER_LOG_LENGTH; i++) if (td->log[i].id == txs->reply_to) { ret = g_strdup_printf("\002[\002%02d->%02d\002]\002 %s%s", td->log_id, i, prefix, txs->text); break; } } if (ret == NULL) ret = g_strdup_printf("\002[\002%02d\002]\002 %s%s", td->log_id, prefix, txs->text); td->log_id = (td->log_id + 1) % TWITTER_LOG_LENGTH; return ret; } static void twitter_groupchat_init(struct im_connection *ic) { char *name_hint; struct groupchat *gc; struct twitter_data *td = ic->proto_data; GSList *l; td->timeline_gc = gc = imcb_chat_new(ic, "twitter/timeline"); name_hint = g_strdup_printf("%s_%s", td->prefix, ic->acc->user); imcb_chat_name_hint(gc, name_hint); g_free(name_hint); for (l = ic->bee->users; l; l = l->next) { bee_user_t *bu = l->data; if (bu->ic == ic) imcb_chat_add_buddy(td->timeline_gc, bu->handle); } } /** * Function that is called to see the statuses in a groupchat window. */ static void twitter_groupchat(struct im_connection *ic, GSList * list) { struct twitter_data *td = ic->proto_data; GSList *l = NULL; struct twitter_xml_status *status; struct groupchat *gc; guint64 last_id = 0; // Create a new groupchat if it does not exsist. if (!td->timeline_gc) twitter_groupchat_init(ic); gc = td->timeline_gc; if (!gc->joined) imcb_chat_add_buddy(gc, ic->acc->user); for (l = list; l; l = g_slist_next(l)) { char *msg; status = l->data; if (status->user == NULL || status->text == NULL || last_id == status->id) continue; last_id = status->id; strip_html(status->text); msg = twitter_msg_add_id(ic, status, ""); // Say it! if (g_strcasecmp(td->user, status->user->screen_name) == 0) { imcb_chat_log(gc, "You: %s", msg ? msg : status->text); } else { twitter_add_buddy(ic, status->user->screen_name, status->user->name); imcb_chat_msg(gc, status->user->screen_name, msg ? msg : status->text, 0, status->created_at); } g_free(msg); // Update the timeline_id to hold the highest id, so that by the next request // we won't pick up the updates already in the list. td->timeline_id = MAX(td->timeline_id, status->id); } } /** * Function that is called to see statuses as private messages. */ static void twitter_private_message_chat(struct im_connection *ic, GSList * list) { struct twitter_data *td = ic->proto_data; GSList *l = NULL; struct twitter_xml_status *status; char from[MAX_STRING]; gboolean mode_one; guint64 last_id = 0; mode_one = g_strcasecmp(set_getstr(&ic->acc->set, "mode"), "one") == 0; if (mode_one) { g_snprintf(from, sizeof(from) - 1, "%s_%s", td->prefix, ic->acc->user); from[MAX_STRING - 1] = '\0'; } for (l = list; l; l = g_slist_next(l)) { char *prefix = NULL, *text = NULL; status = l->data; if (status->user == NULL || status->text == NULL || last_id == status->id) continue; last_id = status->id; strip_html(status->text); if (mode_one) prefix = g_strdup_printf("\002<\002%s\002>\002 ", status->user->screen_name); else twitter_add_buddy(ic, status->user->screen_name, status->user->name); text = twitter_msg_add_id(ic, status, prefix ? prefix : ""); imcb_buddy_msg(ic, mode_one ? from : status->user->screen_name, text ? text : status->text, 0, status->created_at); // Update the timeline_id to hold the highest id, so that by the next request // we won't pick up the updates already in the list. td->timeline_id = MAX(td->timeline_id, status->id); g_free(text); g_free(prefix); } } static void twitter_http_get_home_timeline(struct http_request *req); static void twitter_http_get_mentions(struct http_request *req); /** * Get the timeline with optionally mentions */ void twitter_get_timeline(struct im_connection *ic, gint64 next_cursor) { struct twitter_data *td = ic->proto_data; gboolean include_mentions = set_getbool(&ic->acc->set, "fetch_mentions"); if (td->flags & TWITTER_DOING_TIMELINE) { return; } td->flags |= TWITTER_DOING_TIMELINE; twitter_get_home_timeline(ic, next_cursor); if (include_mentions) { twitter_get_mentions(ic, next_cursor); } } /** * Call this one after receiving timeline/mentions. Show to user once we have * both. */ void twitter_flush_timeline(struct im_connection *ic) { struct twitter_data *td = ic->proto_data; gboolean include_mentions = set_getbool(&ic->acc->set, "fetch_mentions"); gboolean show_old_mentions = set_getbool(&ic->acc->set, "show_old_mentions"); struct twitter_xml_list *home_timeline = td->home_timeline_obj; struct twitter_xml_list *mentions = td->mentions_obj; GSList *output = NULL; GSList *l; if (!(td->flags & TWITTER_GOT_TIMELINE)) { return; } if (include_mentions && !(td->flags & TWITTER_GOT_MENTIONS)) { return; } if (home_timeline && home_timeline->list) { for (l = home_timeline->list; l; l = g_slist_next(l)) { output = g_slist_insert_sorted(output, l->data, twitter_compare_elements); } } if (include_mentions && mentions && mentions->list) { for (l = mentions->list; l; l = g_slist_next(l)) { if (!show_old_mentions && output && twitter_compare_elements(l->data, output->data) < 0) { continue; } output = g_slist_insert_sorted(output, l->data, twitter_compare_elements); } } // See if the user wants to see the messages in a groupchat window or as private messages. if (g_strcasecmp(set_getstr(&ic->acc->set, "mode"), "chat") == 0) twitter_groupchat(ic, output); else twitter_private_message_chat(ic, output); g_slist_free(output); txl_free(home_timeline); txl_free(mentions); td->flags &= ~(TWITTER_DOING_TIMELINE | TWITTER_GOT_TIMELINE | TWITTER_GOT_MENTIONS); td->home_timeline_obj = td->mentions_obj = NULL; } /** * Get the timeline. */ void twitter_get_home_timeline(struct im_connection *ic, gint64 next_cursor) { struct twitter_data *td = ic->proto_data; txl_free(td->home_timeline_obj); td->home_timeline_obj = NULL; td->flags &= ~TWITTER_GOT_TIMELINE; char *args[6]; args[0] = "cursor"; args[1] = g_strdup_printf("%lld", (long long) next_cursor); args[2] = "include_entities"; args[3] = "true"; if (td->timeline_id) { args[4] = "since_id"; args[5] = g_strdup_printf("%llu", (long long unsigned int) td->timeline_id); } if (twitter_http(ic, TWITTER_HOME_TIMELINE_URL, twitter_http_get_home_timeline, ic, 0, args, td->timeline_id ? 6 : 4) == NULL) { if (++td->http_fails >= 5) imcb_error(ic, "Could not retrieve %s: %s", TWITTER_HOME_TIMELINE_URL, "connection failed"); td->flags |= TWITTER_GOT_TIMELINE; twitter_flush_timeline(ic); } g_free(args[1]); if (td->timeline_id) { g_free(args[5]); } } /** * Get mentions. */ void twitter_get_mentions(struct im_connection *ic, gint64 next_cursor) { struct twitter_data *td = ic->proto_data; txl_free(td->mentions_obj); td->mentions_obj = NULL; td->flags &= ~TWITTER_GOT_MENTIONS; char *args[6]; args[0] = "cursor"; args[1] = g_strdup_printf("%lld", (long long) next_cursor); args[2] = "include_entities"; args[3] = "true"; if (td->timeline_id) { args[4] = "since_id"; args[5] = g_strdup_printf("%llu", (long long unsigned int) td->timeline_id); } if (twitter_http(ic, TWITTER_MENTIONS_URL, twitter_http_get_mentions, ic, 0, args, td->timeline_id ? 6 : 4) == NULL) { if (++td->http_fails >= 5) imcb_error(ic, "Could not retrieve %s: %s", TWITTER_MENTIONS_URL, "connection failed"); td->flags |= TWITTER_GOT_MENTIONS; twitter_flush_timeline(ic); } g_free(args[1]); if (td->timeline_id) { g_free(args[5]); } } /** * Callback for getting the home timeline. */ static void twitter_http_get_home_timeline(struct http_request *req) { struct im_connection *ic = req->data; struct twitter_data *td; struct xt_parser *parser; struct twitter_xml_list *txl; // Check if the connection is still active. if (!g_slist_find(twitter_connections, ic)) return; td = ic->proto_data; // Check if the HTTP request went well. if (req->status_code == 200) { td->http_fails = 0; if (!(ic->flags & OPT_LOGGED_IN)) imcb_connected(ic); } else if (req->status_code == 401) { imcb_error(ic, "Authentication failure"); imc_logout(ic, FALSE); goto end; } else { // It didn't go well, output the error and return. if (++td->http_fails >= 5) imcb_error(ic, "Could not retrieve %s: %s", TWITTER_HOME_TIMELINE_URL, twitter_parse_error(req)); goto end; } txl = g_new0(struct twitter_xml_list, 1); txl->list = NULL; // Parse the data. parser = xt_new(NULL, txl); xt_feed(parser, req->reply_body, req->body_size); // The root node should hold the list of statuses twitter_xt_get_status_list(ic, parser->root, txl); xt_free(parser); td->home_timeline_obj = txl; end: td->flags |= TWITTER_GOT_TIMELINE; twitter_flush_timeline(ic); } /** * Callback for getting mentions. */ static void twitter_http_get_mentions(struct http_request *req) { struct im_connection *ic = req->data; struct twitter_data *td; struct xt_parser *parser; struct twitter_xml_list *txl; // Check if the connection is still active. if (!g_slist_find(twitter_connections, ic)) return; td = ic->proto_data; // Check if the HTTP request went well. if (req->status_code == 200) { td->http_fails = 0; if (!(ic->flags & OPT_LOGGED_IN)) imcb_connected(ic); } else if (req->status_code == 401) { imcb_error(ic, "Authentication failure"); imc_logout(ic, FALSE); goto end; } else { // It didn't go well, output the error and return. if (++td->http_fails >= 5) imcb_error(ic, "Could not retrieve %s: %s", TWITTER_MENTIONS_URL, twitter_parse_error(req)); goto end; } txl = g_new0(struct twitter_xml_list, 1); txl->list = NULL; // Parse the data. parser = xt_new(NULL, txl); xt_feed(parser, req->reply_body, req->body_size); // The root node should hold the list of statuses twitter_xt_get_status_list(ic, parser->root, txl); xt_free(parser); td->mentions_obj = txl; end: td->flags |= TWITTER_GOT_MENTIONS; twitter_flush_timeline(ic); } /** * Callback to use after sending a POST request to twitter. * (Generic, used for a few kinds of queries.) */ static void twitter_http_post(struct http_request *req) { struct im_connection *ic = req->data; struct twitter_data *td; // Check if the connection is still active. if (!g_slist_find(twitter_connections, ic)) return; td = ic->proto_data; td->last_status_id = 0; // Check if the HTTP request went well. if (req->status_code != 200) { // It didn't go well, output the error and return. imcb_error(ic, "HTTP error: %s", twitter_parse_error(req)); return; } if (req->body_size > 0) { struct xt_parser *xp = NULL; struct xt_node *node; xp = xt_new(NULL, NULL); xt_feed(xp, req->reply_body, req->body_size); if ((node = xt_find_node(xp->root, "status")) && (node = xt_find_node(node->children, "id")) && node->text) td->last_status_id = g_ascii_strtoull(node->text, NULL, 10); xt_free(xp); } } /** * Function to POST a new status to twitter. */ void twitter_post_status(struct im_connection *ic, char *msg, guint64 in_reply_to) { char *args[4] = { "status", msg, "in_reply_to_status_id", g_strdup_printf("%llu", (unsigned long long) in_reply_to) }; twitter_http(ic, TWITTER_STATUS_UPDATE_URL, twitter_http_post, ic, 1, args, in_reply_to ? 4 : 2); g_free(args[3]); } /** * Function to POST a new message to twitter. */ void twitter_direct_messages_new(struct im_connection *ic, char *who, char *msg) { char *args[4]; args[0] = "screen_name"; args[1] = who; args[2] = "text"; args[3] = msg; // Use the same callback as for twitter_post_status, since it does basically the same. twitter_http(ic, TWITTER_DIRECT_MESSAGES_NEW_URL, twitter_http_post, ic, 1, args, 4); } void twitter_friendships_create_destroy(struct im_connection *ic, char *who, int create) { char *args[2]; args[0] = "screen_name"; args[1] = who; twitter_http(ic, create ? TWITTER_FRIENDSHIPS_CREATE_URL : TWITTER_FRIENDSHIPS_DESTROY_URL, twitter_http_post, ic, 1, args, 2); } void twitter_status_destroy(struct im_connection *ic, guint64 id) { char *url; url = g_strdup_printf("%s%llu%s", TWITTER_STATUS_DESTROY_URL, (unsigned long long) id, ".xml"); twitter_http(ic, url, twitter_http_post, ic, 1, NULL, 0); g_free(url); } void twitter_status_retweet(struct im_connection *ic, guint64 id) { char *url; url = g_strdup_printf("%s%llu%s", TWITTER_STATUS_RETWEET_URL, (unsigned long long) id, ".xml"); twitter_http(ic, url, twitter_http_post, ic, 1, NULL, 0); g_free(url); }