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jabber.c

/*
 * purple - Jabber Protocol Plugin
 *
 * Purple is the legal property of its developers, whose names are too numerous
 * to list here.  Please refer to the COPYRIGHT file distributed with this
 * source distribution.
 *
 * 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 "internal.h"

#include "account.h"
#include "accountopt.h"
#include "blist.h"
#include "core.h"
#include "cmds.h"
#include "connection.h"
#include "conversation.h"
#include "debug.h"
#include "dnssrv.h"
#include "imgstore.h"
#include "message.h"
#include "notify.h"
#include "pluginpref.h"
#include "privacy.h"
#include "proxy.h"
#include "prpl.h"
#include "request.h"
#include "server.h"
#include "status.h"
#include "util.h"
#include "version.h"
#include "xmlnode.h"

#include "auth.h"
#include "buddy.h"
#include "caps.h"
#include "chat.h"
#include "data.h"
#include "disco.h"
#include "google.h"
#include "ibb.h"
#include "iq.h"
#include "jutil.h"
#include "message.h"
#include "parser.h"
#include "presence.h"
#include "jabber.h"
#include "roster.h"
#include "ping.h"
#include "si.h"
#include "xdata.h"
#include "pep.h"
#include "adhoccommands.h"

#include "jingle/jingle.h"
#include "jingle/rtp.h"

GList *jabber_features = NULL;
GList *jabber_identities = NULL;
static GSList *jabber_cmds = NULL;

static void jabber_unregister_account_cb(JabberStream *js);
static void try_srv_connect(JabberStream *js);

static void jabber_stream_init(JabberStream *js)
{
      char *open_stream;

      open_stream = g_strdup_printf("<stream:stream to='%s' "
                                  "xmlns='" NS_XMPP_CLIENT "' "
                                      "xmlns:stream='" NS_XMPP_STREAMS "' "
                                      "version='1.0'>",
                                      js->user->domain);
      /* setup the parser fresh for each stream */
      jabber_parser_setup(js);
      jabber_send_raw(js, open_stream, -1);
      js->reinit = FALSE;
      g_free(open_stream);
}

static void
jabber_session_initialized_cb(JabberStream *js, const char *from,
                              JabberIqType type, const char *id,
                              xmlnode *packet, gpointer data)
{
      if (type == JABBER_IQ_RESULT) {
            jabber_disco_items_server(js);
            if(js->unregistration)
                  jabber_unregister_account_cb(js);
      } else {
            purple_connection_error_reason(js->gc,
                  PURPLE_CONNECTION_ERROR_NETWORK_ERROR,
                  ("Error initializing session"));
      }
}

static void jabber_session_init(JabberStream *js)
{
      JabberIq *iq = jabber_iq_new(js, JABBER_IQ_SET);
      xmlnode *session;

      jabber_iq_set_callback(iq, jabber_session_initialized_cb, NULL);

      session = xmlnode_new_child(iq->node, "session");
      xmlnode_set_namespace(session, NS_XMPP_SESSION);

      jabber_iq_send(iq);
}

static void jabber_bind_result_cb(JabberStream *js, const char *from,
                                  JabberIqType type, const char *id,
                                  xmlnode *packet, gpointer data)
{
      xmlnode *bind;

      if (type == JABBER_IQ_RESULT &&
                  (bind = xmlnode_get_child_with_namespace(packet, "bind", NS_XMPP_BIND))) {
            xmlnode *jid;
            char *full_jid;
            if((jid = xmlnode_get_child(bind, "jid")) && (full_jid = xmlnode_get_data(jid))) {
                  jabber_id_free(js->user);

                  js->user = jabber_id_new(full_jid);
                  if (js->user == NULL) {
                        purple_connection_error_reason(js->gc,
                              PURPLE_CONNECTION_ERROR_NETWORK_ERROR,
                              _("Invalid response from server"));
                        g_free(full_jid);
                        return;
                  }

                  js->user_jb = jabber_buddy_find(js, full_jid, TRUE);
                  js->user_jb->subscription |= JABBER_SUB_BOTH;

                  purple_connection_set_display_name(js->gc, full_jid);

                  g_free(full_jid);
            }
      } else {
            PurpleConnectionError reason = PURPLE_CONNECTION_ERROR_NETWORK_ERROR;
            char *msg = jabber_parse_error(js, packet, &reason);
            purple_connection_error_reason(js->gc, reason, msg);
            g_free(msg);
      }

      jabber_session_init(js);
}

static char *jabber_prep_resource(char *input) {
      char hostname[256], /* current hostname */
             *dot = NULL;

      /* Empty resource == don't send any */
      if (input == NULL || *input == '\0')
            return NULL;

      if (strstr(input, "__HOSTNAME__") == NULL)
            return g_strdup(input);

      /* Replace __HOSTNAME__ with hostname */
      if (gethostname(hostname, sizeof(hostname) - 1)) {
            purple_debug_warning("jabber", "gethostname: %s\n", g_strerror(errno));
            /* according to glibc doc, the only time an error is returned
               is if the hostname is longer than the buffer, in which case
               glibc 2.2+ would still fill the buffer with partial
               hostname, so maybe we want to detect that and use it
               instead
            */
            strcpy(hostname, "localhost");
      }
      hostname[sizeof(hostname) - 1] = '\0';

      /* We want only the short hostname, not the FQDN - this will prevent the
       * resource string from being unreasonably long on systems which stuff the
       * whole FQDN in the hostname */
      if((dot = strchr(hostname, '.')))
                  dot = '\0';

      return purple_strreplace(input, "__HOSTNAME__", hostname);
}

void jabber_stream_features_parse(JabberStream *js, xmlnode *packet)
{
      if(xmlnode_get_child(packet, "starttls")) {
            if(jabber_process_starttls(js, packet)) {
                  jabber_stream_set_state(js, JABBER_STREAM_INITIALIZING_ENCRYPTION);
                  return;
            }
      } else if(purple_account_get_bool(js->gc->account, "require_tls", JABBER_DEFAULT_REQUIRE_TLS) && !jabber_stream_is_ssl(js)) {
            purple_connection_error_reason(js->gc,
                   PURPLE_CONNECTION_ERROR_ENCRYPTION_ERROR,
                  _("You require encryption, but it is not available on this server."));
            return;
      }

      if(js->registration) {
            jabber_register_start(js);
      } else if(xmlnode_get_child(packet, "mechanisms")) {
            jabber_stream_set_state(js, JABBER_STREAM_AUTHENTICATING);
            jabber_auth_start(js, packet);
      } else if(xmlnode_get_child(packet, "bind")) {
            xmlnode *bind, *resource;
            char *requested_resource;
            JabberIq *iq = jabber_iq_new(js, JABBER_IQ_SET);
            bind = xmlnode_new_child(iq->node, "bind");
            xmlnode_set_namespace(bind, NS_XMPP_BIND);
            requested_resource = jabber_prep_resource(js->user->resource);

            if (requested_resource != NULL) {
                  resource = xmlnode_new_child(bind, "resource");
                  xmlnode_insert_data(resource, requested_resource, -1);
                  g_free(requested_resource);
            }

            jabber_iq_set_callback(iq, jabber_bind_result_cb, NULL);

            jabber_iq_send(iq);
      } else if (xmlnode_get_child_with_namespace(packet, "ver", NS_ROSTER_VERSIONING)) {
            js->server_caps |= JABBER_CAP_ROSTER_VERSIONING;
      } else /* if(xmlnode_get_child_with_namespace(packet, "auth")) */ {
            /* If we get an empty stream:features packet, or we explicitly get
             * an auth feature with namespace http://jabber.org/features/iq-auth
             * we should revert back to iq:auth authentication, even though we're
             * connecting to an XMPP server.  */
            jabber_stream_set_state(js, JABBER_STREAM_AUTHENTICATING);
            jabber_auth_start_old(js);
      }
}

static void jabber_stream_handle_error(JabberStream *js, xmlnode *packet)
{
      PurpleConnectionError reason = PURPLE_CONNECTION_ERROR_NETWORK_ERROR;
      char *msg = jabber_parse_error(js, packet, &reason);

      purple_connection_error_reason(js->gc, reason, msg);

      g_free(msg);
}

static void tls_init(JabberStream *js);

void jabber_process_packet(JabberStream *js, xmlnode **packet)
{
      const char *xmlns;

      purple_signal_emit(purple_connection_get_prpl(js->gc), "jabber-receiving-xmlnode", js->gc, packet);

      /* if the signal leaves us with a null packet, we're done */
      if(NULL == *packet)
            return;

      xmlns = xmlnode_get_namespace(*packet);

      if(!strcmp((*packet)->name, "iq")) {
            jabber_iq_parse(js, *packet);
      } else if(!strcmp((*packet)->name, "presence")) {
            jabber_presence_parse(js, *packet);
      } else if(!strcmp((*packet)->name, "message")) {
            jabber_message_parse(js, *packet);
      } else if(!strcmp((*packet)->name, "stream:features")) {
            jabber_stream_features_parse(js, *packet);
      } else if (!strcmp((*packet)->name, "features") && xmlns &&
               !strcmp(xmlns, NS_XMPP_STREAMS)) {
            jabber_stream_features_parse(js, *packet);
      } else if(!strcmp((*packet)->name, "stream:error") ||
                   (!strcmp((*packet)->name, "error") && xmlns &&
                        !strcmp(xmlns, NS_XMPP_STREAMS)))
      {
            jabber_stream_handle_error(js, *packet);
      } else if(!strcmp((*packet)->name, "challenge")) {
            if(js->state == JABBER_STREAM_AUTHENTICATING)
                  jabber_auth_handle_challenge(js, *packet);
      } else if(!strcmp((*packet)->name, "success")) {
            if(js->state == JABBER_STREAM_AUTHENTICATING)
                  jabber_auth_handle_success(js, *packet);
      } else if(!strcmp((*packet)->name, "failure")) {
            if(js->state == JABBER_STREAM_AUTHENTICATING)
                  jabber_auth_handle_failure(js, *packet);
      } else if(!strcmp((*packet)->name, "proceed")) {
            if (js->state == JABBER_STREAM_INITIALIZING_ENCRYPTION && !js->gsc)
                  tls_init(js);
            else
                  purple_debug_warning("jabber", "Ignoring spurious <proceed/>\n");
      } else {
            purple_debug_warning("jabber", "Unknown packet: %s\n", (*packet)->name);
      }
}

static int jabber_do_send(JabberStream *js, const char *data, int len)
{
      int ret;

      if (js->gsc)
            ret = purple_ssl_write(js->gsc, data, len);
      else
            ret = write(js->fd, data, len);

      return ret;
}

static void jabber_send_cb(gpointer data, gint source, PurpleInputCondition cond)
{
      JabberStream *js = data;
      int ret, writelen;
      writelen = purple_circ_buffer_get_max_read(js->write_buffer);

      if (writelen == 0) {
            purple_input_remove(js->writeh);
            js->writeh = 0;
            return;
      }

      ret = jabber_do_send(js, js->write_buffer->outptr, writelen);

      if (ret < 0 && errno == EAGAIN)
            return;
      else if (ret <= 0) {
            gchar *tmp = g_strdup_printf(_("Lost connection with server: %s"),
                        g_strerror(errno));
            purple_connection_error_reason(js->gc,
                  PURPLE_CONNECTION_ERROR_NETWORK_ERROR, tmp);
            g_free(tmp);
            return;
      }

      purple_circ_buffer_mark_read(js->write_buffer, ret);
}

static gboolean do_jabber_send_raw(JabberStream *js, const char *data, int len)
{
      int ret;
      gboolean success = TRUE;

      if (len == -1)
            len = strlen(data);

      if (js->writeh == 0)
            ret = jabber_do_send(js, data, len);
      else {
            ret = -1;
            errno = EAGAIN;
      }

      if (ret < 0 && errno != EAGAIN) {
            PurpleAccount *account = purple_connection_get_account(js->gc);
            /*
             * The server may have closed the socket (on a stream error), so if
             * we're disconnecting, don't generate (possibly another) error that
             * (for some UIs) would mask the first.
             */
            if (!account->disconnecting) {
                  gchar *tmp = g_strdup_printf(_("Lost connection with server: %s"),
                              g_strerror(errno));
                  purple_connection_error_reason(js->gc,
                        PURPLE_CONNECTION_ERROR_NETWORK_ERROR, tmp);
                  g_free(tmp);
            }

            success = FALSE;
      } else if (ret < len) {
            if (ret < 0)
                  ret = 0;
            if (js->writeh == 0)
                  js->writeh = purple_input_add(
                        js->gsc ? js->gsc->fd : js->fd,
                        PURPLE_INPUT_WRITE, jabber_send_cb, js);
            purple_circ_buffer_append(js->write_buffer,
                  data + ret, len - ret);
      }

      return success;
}

void jabber_send_raw(JabberStream *js, const char *data, int len)
{
      /* because printing a tab to debug every minute gets old */
      if(strcmp(data, "\t")) {
            const char *username;
            char *text = NULL, *last_part = NULL, *tag_start = NULL;

            /* Because debug logs with plaintext passwords make me sad */
            if(js->state != JABBER_STREAM_CONNECTED &&
                        /* Either <auth> or <query><password>... */
                        (((tag_start = strstr(data, "<auth ")) &&
                              strstr(data, "xmlns='" NS_XMPP_SASL "'")) ||
                        ((tag_start = strstr(data, "<query ")) &&
                              strstr(data, "xmlns='jabber:iq:auth'>") &&
                              (tag_start = strstr(tag_start, "<password>"))))) {
                  char *data_start, *tag_end = strchr(tag_start, '>');
                  text = g_strdup(data);

                  /* Better to print out some wacky debugging than crash
                   * due to a plugin sending bad xml */
                  if (tag_end == NULL)
                        tag_end = tag_start;

                  data_start = text + (tag_end - data) + 1;

                  last_part = strchr(data_start, '<');
                  *data_start = '\0';
            }

            username = purple_connection_get_display_name(js->gc);
            if (!username)
                  username = purple_account_get_username(purple_connection_get_account(js->gc));

            purple_debug_misc("jabber", "Sending%s (%s): %s%s%s\n",
                        jabber_stream_is_ssl(js) ? " (ssl)" : "", username,
                        text ? text : data,
                        last_part ? "password removed" : "",
                        last_part ? last_part : "");

            g_free(text);
      }

      purple_signal_emit(purple_connection_get_prpl(js->gc), "jabber-sending-text", js->gc, &data);
      if (data == NULL)
            return;

      /* If we've got a security layer, we need to encode the data,
       * splitting it on the maximum buffer length negotiated */
#ifdef HAVE_CYRUS_SASL
      if (js->sasl_maxbuf>0) {
            int pos = 0;

            if (!js->gsc && js->fd<0)
                  return;

            if (len == -1)
                  len = strlen(data);

            while (pos < len) {
                  int towrite;
                  const char *out;
                  unsigned olen;

                  towrite = MIN((len - pos), js->sasl_maxbuf);

                  sasl_encode(js->sasl, &data[pos], towrite, &out, &olen);
                  pos += towrite;

                  if (!do_jabber_send_raw(js, out, olen))
                        break;
            }
            return;
      }
#endif

      if (len == -1)
            len = strlen(data);

      if (js->bosh)
            jabber_bosh_connection_send_raw(js->bosh, data);
      else
            do_jabber_send_raw(js, data, len);
}

int jabber_prpl_send_raw(PurpleConnection *gc, const char *buf, int len)
{
      JabberStream *js = (JabberStream*)gc->proto_data;
      jabber_send_raw(js, buf, len);
      return len;
}

void jabber_send_signal_cb(PurpleConnection *pc, xmlnode **packet,
                           gpointer unused)
{
      JabberStream *js;
      char *txt;
      int len;

      if (NULL == packet)
            return;

      if (!PURPLE_CONNECTION_IS_VALID(pc))
            return;

      js = purple_connection_get_protocol_data(pc);

      if (NULL == js)
            return;

      if (js->bosh)
            if (g_str_equal((*packet)->name, "message") ||
                        g_str_equal((*packet)->name, "iq") ||
                        g_str_equal((*packet)->name, "presence"))
                  xmlnode_set_namespace(*packet, NS_XMPP_CLIENT);
      txt = xmlnode_to_str(*packet, &len);
      jabber_send_raw(js, txt, len);
      g_free(txt);
}

void jabber_send(JabberStream *js, xmlnode *packet)
{
      purple_signal_emit(purple_connection_get_prpl(js->gc), "jabber-sending-xmlnode", js->gc, &packet);
}

static gboolean jabber_keepalive_timeout(PurpleConnection *gc)
{
      JabberStream *js = gc->proto_data;
      purple_connection_error_reason(gc, PURPLE_CONNECTION_ERROR_NETWORK_ERROR,
                              _("Ping timed out"));
      js->keepalive_timeout = 0;
      return FALSE;
}

void jabber_keepalive(PurpleConnection *gc)
{
      JabberStream *js = gc->proto_data;

      if (js->keepalive_timeout == 0) {
            jabber_keepalive_ping(js);
            js->keepalive_timeout = purple_timeout_add_seconds(120,
                        (GSourceFunc)(jabber_keepalive_timeout), gc);
      }
}

static void
jabber_recv_cb_ssl(gpointer data, PurpleSslConnection *gsc,
            PurpleInputCondition cond)
{
      PurpleConnection *gc = data;
      JabberStream *js = gc->proto_data;
      int len;
      static char buf[4096];

      /* TODO: It should be possible to make this check unnecessary */
      if(!PURPLE_CONNECTION_IS_VALID(gc)) {
            purple_ssl_close(gsc);
            return;
      }

      while((len = purple_ssl_read(gsc, buf, sizeof(buf) - 1)) > 0) {
            gc->last_received = time(NULL);
            buf[len] = '\0';
            purple_debug_info("jabber", "Recv (ssl)(%d): %s\n", len, buf);
            jabber_parser_process(js, buf, len);
            if(js->reinit)
                  jabber_stream_init(js);
      }

      if(len < 0 && errno == EAGAIN)
            return;
      else {
            gchar *tmp;
            if (len == 0)
                  tmp = g_strdup_printf(_("Server closed the connection"));
            else
                  tmp = g_strdup_printf(_("Lost connection with server: %s"),
                              g_strerror(errno));
            purple_connection_error_reason(js->gc,
                  PURPLE_CONNECTION_ERROR_NETWORK_ERROR, tmp);
            g_free(tmp);
      }
}

static void
jabber_recv_cb(gpointer data, gint source, PurpleInputCondition condition)
{
      PurpleConnection *gc = data;
      JabberStream *js = gc->proto_data;
      int len;
      static char buf[4096];

      if(!PURPLE_CONNECTION_IS_VALID(gc))
            return;

      if((len = read(js->fd, buf, sizeof(buf) - 1)) > 0) {
            gc->last_received = time(NULL);
#ifdef HAVE_CYRUS_SASL
            if (js->sasl_maxbuf>0) {
                  const char *out;
                  unsigned int olen;
                  sasl_decode(js->sasl, buf, len, &out, &olen);
                  if (olen>0) {
                        purple_debug_info("jabber", "RecvSASL (%u): %s\n", olen, out);
                        jabber_parser_process(js,out,olen);
                        if(js->reinit)
                              jabber_stream_init(js);
                  }
                  return;
            }
#endif
            buf[len] = '\0';
            purple_debug_info("jabber", "Recv (%d): %s\n", len, buf);
            jabber_parser_process(js, buf, len);
            if(js->reinit)
                  jabber_stream_init(js);
      } else if(len < 0 && errno == EAGAIN) {
            return;
      } else {
            gchar *tmp;
            if (len == 0)
                  tmp = g_strdup_printf(_("Server closed the connection"));
            else
                  tmp = g_strdup_printf(_("Lost connection with server: %s"),
                              g_strerror(errno));
            purple_connection_error_reason(js->gc,
                  PURPLE_CONNECTION_ERROR_NETWORK_ERROR, tmp);
            g_free(tmp);
      }
}

static void
jabber_login_callback_ssl(gpointer data, PurpleSslConnection *gsc,
            PurpleInputCondition cond)
{
      PurpleConnection *gc = data;
      JabberStream *js;

      /* TODO: It should be possible to make this check unnecessary */
      if(!PURPLE_CONNECTION_IS_VALID(gc)) {
            purple_ssl_close(gsc);
            return;
      }

      js = gc->proto_data;

      if(js->state == JABBER_STREAM_CONNECTING)
            jabber_send_raw(js, "<?xml version='1.0' ?>", -1);
      jabber_stream_set_state(js, JABBER_STREAM_INITIALIZING);
      purple_ssl_input_add(gsc, jabber_recv_cb_ssl, gc);

      /* Tell the app that we're doing encryption */
      jabber_stream_set_state(js, JABBER_STREAM_INITIALIZING_ENCRYPTION);
}

static void
txt_resolved_cb(GList *responses, gpointer data)
{
      JabberStream *js = data;

      js->srv_query_data = NULL;

      if (responses == NULL) {
            purple_debug_warning("jabber", "Unable to find alternative XMPP connection "
                          "methods after failing to connect directly.\n");
            purple_connection_error_reason(js->gc,
                        PURPLE_CONNECTION_ERROR_NETWORK_ERROR,
                        _("Unable to connect"));
            return;
      }

      while (responses) {
            PurpleTxtResponse *resp = responses->data;
            gchar **token;
            token = g_strsplit(purple_txt_response_get_content(resp), "=", 2);
            if (!strcmp(token[0], "_xmpp-client-xbosh")) {
                  purple_debug_info("jabber","Found alternative connection method using %s at %s.\n", token[0], token[1]);
                  js->bosh = jabber_bosh_connection_init(js, token[1]);
                  g_strfreev(token);
                  break;
            }
            g_strfreev(token);
            purple_txt_response_destroy(resp);
            responses = g_list_delete_link(responses, responses);
      }

      if (js->bosh) {
            jabber_bosh_connection_connect(js->bosh);
      } else {
            purple_debug_info("jabber","Didn't find an alternative connection method.\n");
      }

      if (responses) {
            g_list_foreach(responses, (GFunc)purple_txt_response_destroy, NULL);
            g_list_free(responses);
      }
}

static void
jabber_login_callback(gpointer data, gint source, const gchar *error)
{
      PurpleConnection *gc = data;
      JabberStream *js = purple_connection_get_protocol_data(gc);

      if (source < 0) {
            if (js->srv_rec != NULL) {
                  purple_debug_error("jabber", "Unable to connect to server: %s.  Trying next SRV record or connecting directly.\n", error);
                  try_srv_connect(js);
            } else {
                  purple_debug_info("jabber","Couldn't connect directly to %s.  Trying to find alternative connection methods, like BOSH.\n", js->user->domain);
                  js->srv_query_data = purple_txt_resolve("_xmppconnect",
                              js->user->domain, txt_resolved_cb, js);
            }
            return;
      }

      g_free(js->srv_rec);
      js->srv_rec = NULL;

      js->fd = source;

      if(js->state == JABBER_STREAM_CONNECTING)
            jabber_send_raw(js, "<?xml version='1.0' ?>", -1);

      jabber_stream_set_state(js, JABBER_STREAM_INITIALIZING);
      gc->inpa = purple_input_add(js->fd, PURPLE_INPUT_READ, jabber_recv_cb, gc);
}

static void
jabber_ssl_connect_failure(PurpleSslConnection *gsc, PurpleSslErrorType error,
            gpointer data)
{
      PurpleConnection *gc = data;
      JabberStream *js;

      /* If the connection is already disconnected, we don't need to do anything else */
      if(!PURPLE_CONNECTION_IS_VALID(gc))
            return;

      js = gc->proto_data;
      js->gsc = NULL;

      purple_connection_ssl_error (gc, error);
}

static void tls_init(JabberStream *js)
{
      purple_input_remove(js->gc->inpa);
      js->gc->inpa = 0;
      js->gsc = purple_ssl_connect_with_host_fd(js->gc->account, js->fd,
                  jabber_login_callback_ssl, jabber_ssl_connect_failure, js->certificate_CN, js->gc);
      /* The fd is no longer our concern */
      js->fd = -1;
}

static gboolean jabber_login_connect(JabberStream *js, const char *domain, const char *host, int port,
                         gboolean fatal_failure)
{
      /* host should be used in preference to domain to
       * allow SASL authentication to work with FQDN of the server,
       * but we use domain as fallback for when users enter IP address
       * in connect server */
      g_free(js->serverFQDN);
      if (purple_ip_address_is_valid(host))
            js->serverFQDN = g_strdup(domain);
      else
            js->serverFQDN = g_strdup(host);

      if (purple_proxy_connect(js->gc, purple_connection_get_account(js->gc),
                  host, port, jabber_login_callback, js->gc) == NULL) {
            if (fatal_failure) {
                  purple_connection_error_reason(js->gc,
                        PURPLE_CONNECTION_ERROR_NETWORK_ERROR,
                        _("Unable to connect"));
            }

            return FALSE;
      }

      return TRUE;
}

static void try_srv_connect(JabberStream *js)
{
      while (js->srv_rec != NULL && js->srv_rec_idx < js->max_srv_rec_idx) {
            PurpleSrvResponse *tmp_resp = js->srv_rec + (js->srv_rec_idx++);
            if (jabber_login_connect(js, tmp_resp->hostname, tmp_resp->hostname, tmp_resp->port, FALSE))
                  return;
      }

      g_free(js->srv_rec);
      js->srv_rec = NULL;

      /* Fall back to the defaults (I'm not sure if we should actually do this) */
      jabber_login_connect(js, js->user->domain, js->user->domain,
                  purple_account_get_int(purple_connection_get_account(js->gc), "port", 5222),
                  TRUE);
}

static void srv_resolved_cb(PurpleSrvResponse *resp, int results, gpointer data)
{
      JabberStream *js = data;
      js->srv_query_data = NULL;

      if(results) {
            js->srv_rec = resp;
            js->srv_rec_idx = 0;
            js->max_srv_rec_idx = results;
            try_srv_connect(js);
      } else {
            jabber_login_connect(js, js->user->domain, js->user->domain,
                        purple_account_get_int(purple_connection_get_account(js->gc), "port", 5222),
                        TRUE);
      }
}

static JabberStream *
jabber_stream_new(PurpleAccount *account)
{
      PurpleConnection *gc = purple_account_get_connection(account);
      JabberStream *js;
      PurplePresence *presence;
      gchar *user;
      gchar *slash;

      js = gc->proto_data = g_new0(JabberStream, 1);
      js->gc = gc;
      js->fd = -1;

      user = g_strdup(purple_account_get_username(account));
      /* jabber_id_new doesn't accept "user@domain/" as valid */
      slash = strchr(user, '/');
      if (slash && *(slash + 1) == '\0')
            *slash = '\0';
      js->user = jabber_id_new(user);

      if (!js->user) {
            purple_connection_error_reason(gc,
                  PURPLE_CONNECTION_ERROR_INVALID_SETTINGS,
                  _("Invalid XMPP ID"));
            /* Destroying the connection will free the JabberStream */
            return NULL;
      }

      if (!js->user->domain || *(js->user->domain) == '\0') {
            purple_connection_error_reason(gc,
                  PURPLE_CONNECTION_ERROR_INVALID_SETTINGS,
                  _("Invalid XMPP ID. Domain must be set."));
            /* Destroying the connection will free the JabberStream */
            return NULL;
      }

      js->buddies = g_hash_table_new_full(g_str_hash, g_str_equal,
                  g_free, (GDestroyNotify)jabber_buddy_free);

      js->user_jb = jabber_buddy_find(js, user, TRUE);
      g_free(user);
      if (!js->user_jb) {
            /* This basically *can't* fail, but for good measure... */
            purple_connection_error_reason(gc,
                  PURPLE_CONNECTION_ERROR_INVALID_SETTINGS,
                  _("Invalid XMPP ID"));
            /* Destroying the connection will free the JabberStream */
            g_return_val_if_reached(NULL);
      }

      js->user_jb->subscription |= JABBER_SUB_BOTH;

      js->iq_callbacks = g_hash_table_new_full(g_str_hash, g_str_equal,
                  g_free, g_free);
      js->chats = g_hash_table_new_full(g_str_hash, g_str_equal,
                  g_free, (GDestroyNotify)jabber_chat_free);
      js->next_id = g_random_int();
      js->write_buffer = purple_circ_buffer_new(512);
      js->old_length = 0;
      js->keepalive_timeout = 0;
      /* Set the default protocol version to 1.0. Overridden in parser.c. */
      js->protocol_version = JABBER_PROTO_1_0;
      js->sessions = NULL;
      js->stun_ip = NULL;
      js->stun_port = 0;
      js->stun_query = NULL;

      /* if we are idle, set idle-ness on the stream (this could happen if we get
            disconnected and the reconnects while being idle. I don't think it makes
            sense to do this when registering a new account... */
      presence = purple_account_get_presence(account);
      if (purple_presence_is_idle(presence))
            js->idle = purple_presence_get_idle_time(presence);

      return js;
}

static void
jabber_stream_connect(JabberStream *js)
{
      PurpleConnection *gc = js->gc;
      PurpleAccount *account = purple_connection_get_account(gc);
      const char *connect_server = purple_account_get_string(account,
                  "connect_server", "");
      const char *bosh_url = purple_account_get_string(account,
                  "bosh_url", "");

      jabber_stream_set_state(js, JABBER_STREAM_CONNECTING);

      /* If both BOSH and a Connect Server are specified, we prefer BOSH. I'm not
       * attached to that choice, though.
       */
      if (*bosh_url) {
            js->bosh = jabber_bosh_connection_init(js, bosh_url);
            if (js->bosh)
                  jabber_bosh_connection_connect(js->bosh);
            else {
                  purple_connection_error_reason(gc,
                        PURPLE_CONNECTION_ERROR_INVALID_SETTINGS,
                        _("Malformed BOSH URL"));
            }

            return;
      }

      js->certificate_CN = g_strdup(connect_server[0] ? connect_server : js->user->domain);

      /* if they've got old-ssl mode going, we probably want to ignore SRV lookups */
      if(purple_account_get_bool(account, "old_ssl", FALSE)) {
            if(purple_ssl_is_supported()) {
                  js->gsc = purple_ssl_connect(account, js->certificate_CN,
                              purple_account_get_int(account, "port", 5223),
                              jabber_login_callback_ssl, jabber_ssl_connect_failure, gc);
                  if (!js->gsc) {
                        purple_connection_error_reason(gc,
                              PURPLE_CONNECTION_ERROR_NO_SSL_SUPPORT,
                              _("Unable to establish SSL connection"));
                  }
            } else {
                  purple_connection_error_reason(gc,
                        PURPLE_CONNECTION_ERROR_NO_SSL_SUPPORT,
                        _("SSL support unavailable"));
            }

            return;
      }

      /* no old-ssl, so if they've specified a connect server, we'll use that, otherwise we'll
       * invoke the magic of SRV lookups, to figure out host and port */
      if(connect_server[0]) {
            jabber_login_connect(js, js->user->domain, connect_server,
                        purple_account_get_int(account, "port", 5222), TRUE);
      } else {
            js->srv_query_data = purple_srv_resolve("xmpp-client",
                        "tcp", js->user->domain, srv_resolved_cb, js);
      }
}

void
jabber_login(PurpleAccount *account)
{
      PurpleConnection *gc = purple_account_get_connection(account);
      JabberStream *js;
      PurpleStoredImage *image;

      gc->flags |= PURPLE_CONNECTION_HTML |
            PURPLE_CONNECTION_ALLOW_CUSTOM_SMILEY;
      js = jabber_stream_new(account);
      if (js == NULL)
            return;

      /* TODO: Remove this at some point.  Added 2010-02-14 (v2.6.6) */
      if (g_str_equal("proxy.jabber.org", purple_account_get_string(account, "ft_proxies", "")))
            purple_account_set_string(account, "ft_proxies", JABBER_DEFAULT_FT_PROXIES);

      /*
       * Calculate the avatar hash for our current image so we know (when we
       * fetch our vCard and PEP avatar) if we should send our avatar to the
       * server.
       */
      image = purple_buddy_icons_find_account_icon(account);
      if (image != NULL) {
            js->initial_avatar_hash =
                  jabber_calculate_data_sha1sum(purple_imgstore_get_data(image),
                              purple_imgstore_get_size(image));
            purple_imgstore_unref(image);
      }

      jabber_stream_connect(js);
}


static gboolean
conn_close_cb(gpointer data)
{
      JabberStream *js = data;
      PurpleAccount *account = purple_connection_get_account(js->gc);

      jabber_parser_free(js);

      purple_account_disconnect(account);

      return FALSE;
}

static void
jabber_connection_schedule_close(JabberStream *js)
{
      purple_timeout_add(0, conn_close_cb, js);
}

static void
jabber_registration_result_cb(JabberStream *js, const char *from,
                              JabberIqType type, const char *id,
                              xmlnode *packet, gpointer data)
{
      PurpleAccount *account = purple_connection_get_account(js->gc);
      char *buf;
      char *to = data;

      if (type == JABBER_IQ_RESULT) {
            if(js->registration) {
                  buf = g_strdup_printf(_("Registration of %s@%s successful"),
                              js->user->node, js->user->domain);
                  if(account->registration_cb)
                        (account->registration_cb)(account, TRUE, account->registration_cb_user_data);
            } else {
                  g_return_if_fail(to != NULL);
                  buf = g_strdup_printf(_("Registration to %s successful"),
                        to);
            }
            purple_notify_info(NULL, _("Registration Successful"),
                        _("Registration Successful"), buf);
            g_free(buf);
      } else {
            char *msg = jabber_parse_error(js, packet, NULL);

            if(!msg)
                  msg = g_strdup(_("Unknown Error"));

            purple_notify_error(NULL, _("Registration Failed"),
                        _("Registration Failed"), msg);
            g_free(msg);
            if(account->registration_cb)
                  (account->registration_cb)(account, FALSE, account->registration_cb_user_data);
      }
      g_free(to);
      if(js->registration)
            jabber_connection_schedule_close(js);
}

static void
jabber_unregistration_result_cb(JabberStream *js, const char *from,
                                JabberIqType type, const char *id,
                                xmlnode *packet, gpointer data)
{
      char *buf;
      char *to = data;

      /* This function is never called for unregistering our XMPP account from
       * the server, so there should always be a 'to' address. */
      g_return_if_fail(to != NULL);

      if (type == JABBER_IQ_RESULT) {
            buf = g_strdup_printf(_("Registration from %s successfully removed"),
                                            to);
            purple_notify_info(NULL, _("Unregistration Successful"),
                                       _("Unregistration Successful"), buf);
            g_free(buf);
      } else {
            char *msg = jabber_parse_error(js, packet, NULL);

            if(!msg)
                  msg = g_strdup(_("Unknown Error"));

            purple_notify_error(NULL, _("Unregistration Failed"),
                                          _("Unregistration Failed"), msg);
            g_free(msg);
      }
      g_free(to);
}

typedef struct _JabberRegisterCBData {
      JabberStream *js;
      char *who;
} JabberRegisterCBData;

static void
jabber_register_cb(JabberRegisterCBData *cbdata, PurpleRequestFields *fields)
{
      GList *groups, *flds;
      xmlnode *query, *y;
      JabberIq *iq;
      char *username;

      iq = jabber_iq_new_query(cbdata->js, JABBER_IQ_SET, "jabber:iq:register");
      query = xmlnode_get_child(iq->node, "query");
      if (cbdata->who)
            xmlnode_set_attrib(iq->node, "to", cbdata->who);

      for(groups = purple_request_fields_get_groups(fields); groups;
                  groups = groups->next) {
            for(flds = purple_request_field_group_get_fields(groups->data);
                        flds; flds = flds->next) {
                  PurpleRequestField *field = flds->data;
                  const char *id = purple_request_field_get_id(field);
                  if(!strcmp(id,"unregister")) {
                        gboolean value = purple_request_field_bool_get_value(field);
                        if(value) {
                              /* unregister from service. this doesn't include any of the fields, so remove them from the stanza by recreating it
                                 (there's no "remove child" function for xmlnode) */
                              jabber_iq_free(iq);
                              iq = jabber_iq_new_query(cbdata->js, JABBER_IQ_SET, "jabber:iq:register");
                              query = xmlnode_get_child(iq->node, "query");
                              if (cbdata->who)
                                    xmlnode_set_attrib(iq->node,"to",cbdata->who);
                              xmlnode_new_child(query, "remove");

                              jabber_iq_set_callback(iq, jabber_unregistration_result_cb, cbdata->who);

                              jabber_iq_send(iq);
                              g_free(cbdata);
                              return;
                        }
                  } else {
                        const char *ids[] = {"username", "password", "name", "email", "nick", "first",
                              "last", "address", "city", "state", "zip", "phone", "url", "date",
                              NULL};
                        const char *value = purple_request_field_string_get_value(field);
                        int i;
                        for (i = 0; ids[i]; i++) {
                              if (!strcmp(id, ids[i]))
                                    break;
                        }

                        if (!ids[i])
                              continue;
                        y = xmlnode_new_child(query, ids[i]);
                        xmlnode_insert_data(y, value, -1);
                        if(cbdata->js->registration && !strcmp(id, "username")) {
                              g_free(cbdata->js->user->node);
                              cbdata->js->user->node = g_strdup(value);
                        }
                        if(cbdata->js->registration && !strcmp(id, "password"))
                              purple_account_set_password(cbdata->js->gc->account, value);
                  }
            }
      }

      if(cbdata->js->registration) {
            username = g_strdup_printf("%s@%s%s%s", cbdata->js->user->node, cbdata->js->user->domain,
                  cbdata->js->user->resource ? "/" : "",
                  cbdata->js->user->resource ? cbdata->js->user->resource : "");
            purple_account_set_username(cbdata->js->gc->account, username);
            g_free(username);
      }

      jabber_iq_set_callback(iq, jabber_registration_result_cb, cbdata->who);

      jabber_iq_send(iq);
      g_free(cbdata);
}

static void
jabber_register_cancel_cb(JabberRegisterCBData *cbdata, PurpleRequestFields *fields)
{
      PurpleAccount *account = purple_connection_get_account(cbdata->js->gc);
      if(account && cbdata->js->registration) {
            if(account->registration_cb)
                  (account->registration_cb)(account, FALSE, account->registration_cb_user_data);
            jabber_connection_schedule_close(cbdata->js);
      }
      g_free(cbdata->who);
      g_free(cbdata);
}

static void jabber_register_x_data_cb(JabberStream *js, xmlnode *result, gpointer data)
{
      xmlnode *query;
      JabberIq *iq;
      char *to = data;

      iq = jabber_iq_new_query(js, JABBER_IQ_SET, "jabber:iq:register");
      query = xmlnode_get_child(iq->node, "query");
      if (to)
            xmlnode_set_attrib(iq->node,"to",to);

      xmlnode_insert_child(query, result);

      jabber_iq_set_callback(iq, jabber_registration_result_cb, to);
      jabber_iq_send(iq);
}

static const struct {
      const char *name;
      const char *label;
} registration_fields[] = {
      { "email",   N_("Email") },
      { "nick",    N_("Nickname") },
      { "first",   N_("First name") },
      { "last",    N_("Last name") },
      { "address", N_("Address") },
      { "city",    N_("City") },
      { "state",   N_("State") },
      { "zip",     N_("Postal code") },
      { "phone",   N_("Phone") },
      { "url",     N_("URL") },
      { "date",    N_("Date") },
      { NULL, NULL }
};

void jabber_register_parse(JabberStream *js, const char *from, JabberIqType type,
                           const char *id, xmlnode *query)
{
      PurpleAccount *account = purple_connection_get_account(js->gc);
      PurpleRequestFields *fields;
      PurpleRequestFieldGroup *group;
      PurpleRequestField *field;
      xmlnode *x, *y, *node;
      char *instructions;
      JabberRegisterCBData *cbdata;
      gboolean registered = FALSE;
      int i;

      if (type != JABBER_IQ_RESULT)
            return;

      if(js->registration) {
            /* get rid of the login thingy */
            purple_connection_set_state(js->gc, PURPLE_CONNECTED);
      }

      if(xmlnode_get_child(query, "registered")) {
            registered = TRUE;

            if(js->registration) {
                  purple_notify_error(NULL, _("Already Registered"),
                                                _("Already Registered"), NULL);
                  if(account->registration_cb)
                        (account->registration_cb)(account, FALSE, account->registration_cb_user_data);
                  jabber_connection_schedule_close(js);
                  return;
            }
      }

      if((x = xmlnode_get_child_with_namespace(query, "x", "jabber:x:data"))) {
            jabber_x_data_request(js, x, jabber_register_x_data_cb, g_strdup(from));
            return;

      } else if((x = xmlnode_get_child_with_namespace(query, "x", NS_OOB_X_DATA))) {
            xmlnode *url;

            if((url = xmlnode_get_child(x, "url"))) {
                  char *href;
                  if((href = xmlnode_get_data(url))) {
                        purple_notify_uri(NULL, href);
                        g_free(href);

                        if(js->registration) {
                              js->gc->wants_to_die = TRUE;
                              if(account->registration_cb) /* succeeded, but we have no login info */
                                    (account->registration_cb)(account, TRUE, account->registration_cb_user_data);
                              jabber_connection_schedule_close(js);
                        }
                        return;
                  }
            }
      }

      /* as a last resort, use the old jabber:iq:register syntax */

      fields = purple_request_fields_new();
      group = purple_request_field_group_new(NULL);
      purple_request_fields_add_group(fields, group);

      if((node = xmlnode_get_child(query, "username"))) {
            char *data = xmlnode_get_data(node);
            if(js->registration)
                  field = purple_request_field_string_new("username", _("Username"), data ? data : js->user->node, FALSE);
            else
                  field = purple_request_field_string_new("username", _("Username"), data, FALSE);

            purple_request_field_group_add_field(group, field);
            g_free(data);
      }
      if((node = xmlnode_get_child(query, "password"))) {
            if(js->registration)
                  field = purple_request_field_string_new("password", _("Password"),
                                                            purple_connection_get_password(js->gc), FALSE);
            else {
                  char *data = xmlnode_get_data(node);
                  field = purple_request_field_string_new("password", _("Password"), data, FALSE);
                  g_free(data);
            }

            purple_request_field_string_set_masked(field, TRUE);
            purple_request_field_group_add_field(group, field);
      }

      if((node = xmlnode_get_child(query, "name"))) {
            if(js->registration)
                  field = purple_request_field_string_new("name", _("Name"),
                                                                              purple_account_get_alias(js->gc->account), FALSE);
            else {
                  char *data = xmlnode_get_data(node);
                  field = purple_request_field_string_new("name", _("Name"), data, FALSE);
                  g_free(data);
            }
            purple_request_field_group_add_field(group, field);
      }

      for (i = 0; registration_fields[i].name != NULL; ++i) {
            if ((node = xmlnode_get_child(query, registration_fields[i].name))) {
                  char *data = xmlnode_get_data(node);
                  field = purple_request_field_string_new(registration_fields[i].name,
                                                          _(registration_fields[i].label),
                                                          data, FALSE);
                  purple_request_field_group_add_field(group, field);
                  g_free(data);
            }
      }

      if(registered) {
            field = purple_request_field_bool_new("unregister", _("Unregister"), FALSE);
            purple_request_field_group_add_field(group, field);
      }

      if((y = xmlnode_get_child(query, "instructions")))
            instructions = xmlnode_get_data(y);
      else if(registered)
            instructions = g_strdup(_("Please fill out the information below "
                              "to change your account registration."));
      else
            instructions = g_strdup(_("Please fill out the information below "
                              "to register your new account."));

      cbdata = g_new0(JabberRegisterCBData, 1);
      cbdata->js = js;
      cbdata->who = g_strdup(from);

      if(js->registration)
            purple_request_fields(js->gc, _("Register New XMPP Account"),
                        _("Register New XMPP Account"), instructions, fields,
                        _("Register"), G_CALLBACK(jabber_register_cb),
                        _("Cancel"), G_CALLBACK(jabber_register_cancel_cb),
                        purple_connection_get_account(js->gc), NULL, NULL,
                        cbdata);
      else {
            char *title;
            g_return_if_fail(from != NULL);
            title = registered ? g_strdup_printf(_("Change Account Registration at %s"), from)
                                                :g_strdup_printf(_("Register New Account at %s"), from);
            purple_request_fields(js->gc, title,
                    title, instructions, fields,
                    (registered ? _("Change Registration") : _("Register")), G_CALLBACK(jabber_register_cb),
                    _("Cancel"), G_CALLBACK(jabber_register_cancel_cb),
                    purple_connection_get_account(js->gc), NULL, NULL,
                    cbdata);
            g_free(title);
      }

      g_free(instructions);
}

void jabber_register_start(JabberStream *js)
{
      JabberIq *iq;

      iq = jabber_iq_new_query(js, JABBER_IQ_GET, "jabber:iq:register");
      jabber_iq_send(iq);
}

void jabber_register_gateway(JabberStream *js, const char *gateway) {
      JabberIq *iq;

      iq = jabber_iq_new_query(js, JABBER_IQ_GET, "jabber:iq:register");
      xmlnode_set_attrib(iq->node, "to", gateway);
      jabber_iq_send(iq);
}

void jabber_register_account(PurpleAccount *account)
{
      JabberStream *js;

      js = jabber_stream_new(account);
      if (js == NULL)
            return;

      js->registration = TRUE;
      jabber_stream_connect(js);
}

static void
jabber_unregister_account_iq_cb(JabberStream *js, const char *from,
                                JabberIqType type, const char *id,
                                xmlnode *packet, gpointer data)
{
      PurpleAccount *account = purple_connection_get_account(js->gc);

      if (type == JABBER_IQ_ERROR) {
            char *msg = jabber_parse_error(js, packet, NULL);

            purple_notify_error(js->gc, _("Error unregistering account"),
                                          _("Error unregistering account"), msg);
            g_free(msg);
            if(js->unregistration_cb)
                  js->unregistration_cb(account, FALSE, js->unregistration_user_data);
      } else {
            purple_notify_info(js->gc, _("Account successfully unregistered"),
                                       _("Account successfully unregistered"), NULL);
            if(js->unregistration_cb)
                  js->unregistration_cb(account, TRUE, js->unregistration_user_data);
      }
}

static void jabber_unregister_account_cb(JabberStream *js) {
      JabberIq *iq;
      xmlnode *query;

      g_return_if_fail(js->unregistration);

      iq = jabber_iq_new_query(js, JABBER_IQ_SET, "jabber:iq:register");

      query = xmlnode_get_child_with_namespace(iq->node, "query", "jabber:iq:register");

      xmlnode_new_child(query, "remove");
      xmlnode_set_attrib(iq->node, "to", js->user->domain);

      jabber_iq_set_callback(iq, jabber_unregister_account_iq_cb, NULL);
      jabber_iq_send(iq);
}

void jabber_unregister_account(PurpleAccount *account, PurpleAccountUnregistrationCb cb, void *user_data) {
      PurpleConnection *gc = purple_account_get_connection(account);
      JabberStream *js;

      if(gc->state != PURPLE_CONNECTED) {
            if(gc->state != PURPLE_CONNECTING)
                  jabber_login(account);
            js = gc->proto_data;
            js->unregistration = TRUE;
            js->unregistration_cb = cb;
            js->unregistration_user_data = user_data;
            return;
      }

      js = gc->proto_data;

      if (js->unregistration) {
            purple_debug_error("jabber", "Unregistration in process; ignoring duplicate request.\n");
            return;
      }

      js->unregistration = TRUE;
      js->unregistration_cb = cb;
      js->unregistration_user_data = user_data;

      jabber_unregister_account_cb(js);
}

/* TODO: As Will pointed out in IRC, after being notified by the core to
 * shutdown, we should async. wait for the server to send us the stream
 * termination before destorying everything. That seems like it would require
 * changing the semantics of prpl->close(), so it's a good idea for 3.0.0.
 */
void jabber_close(PurpleConnection *gc)
{
      JabberStream *js = purple_connection_get_protocol_data(gc);

      /* Close all of the open Jingle sessions on this stream */
      jingle_terminate_sessions(js);

      if (js->bosh)
            jabber_bosh_connection_close(js->bosh);
      else if ((js->gsc && js->gsc->fd > 0) || js->fd > 0)
            jabber_send_raw(js, "</stream:stream>", -1);

      if (js->srv_query_data)
            purple_srv_cancel(js->srv_query_data);

      if(js->gsc) {
            purple_ssl_close(js->gsc);
      } else if (js->fd > 0) {
            if(js->gc->inpa)
                  purple_input_remove(js->gc->inpa);
            close(js->fd);
      }

      if (js->bosh)
            jabber_bosh_connection_destroy(js->bosh);

      jabber_buddy_remove_all_pending_buddy_info_requests(js);

      jabber_parser_free(js);

      if(js->iq_callbacks)
            g_hash_table_destroy(js->iq_callbacks);
      if(js->buddies)
            g_hash_table_destroy(js->buddies);
      if(js->chats)
            g_hash_table_destroy(js->chats);

      while(js->chat_servers) {
            g_free(js->chat_servers->data);
            js->chat_servers = g_list_delete_link(js->chat_servers, js->chat_servers);
      }

      while(js->user_directories) {
            g_free(js->user_directories->data);
            js->user_directories = g_list_delete_link(js->user_directories, js->user_directories);
      }

      while(js->bs_proxies) {
            JabberBytestreamsStreamhost *sh = js->bs_proxies->data;
            g_free(sh->jid);
            g_free(sh->host);
            g_free(sh->zeroconf);
            g_free(sh);
            js->bs_proxies = g_list_delete_link(js->bs_proxies, js->bs_proxies);
      }

      while(js->url_datas) {
            purple_util_fetch_url_cancel(js->url_datas->data);
            js->url_datas = g_slist_delete_link(js->url_datas, js->url_datas);
      }

      g_free(js->stream_id);
      if(js->user)
            jabber_id_free(js->user);
      g_free(js->initial_avatar_hash);
      g_free(js->avatar_hash);
      g_free(js->caps_hash);

      purple_circ_buffer_destroy(js->write_buffer);
      if(js->writeh)
            purple_input_remove(js->writeh);
      if (js->auth_mech && js->auth_mech->dispose)
            js->auth_mech->dispose(js);
#ifdef HAVE_CYRUS_SASL
      if(js->sasl)
            sasl_dispose(&js->sasl);
      if(js->sasl_mechs)
            g_string_free(js->sasl_mechs, TRUE);
      g_free(js->sasl_cb);
#endif
      g_free(js->serverFQDN);
      while(js->commands) {
            JabberAdHocCommands *cmd = js->commands->data;
            g_free(cmd->jid);
            g_free(cmd->node);
            g_free(cmd->name);
            g_free(cmd);
            js->commands = g_list_delete_link(js->commands, js->commands);
      }
      g_free(js->server_name);
      g_free(js->certificate_CN);
      g_free(js->gmail_last_time);
      g_free(js->gmail_last_tid);
      g_free(js->old_msg);
      g_free(js->old_avatarhash);
      g_free(js->old_artist);
      g_free(js->old_title);
      g_free(js->old_source);
      g_free(js->old_uri);
      g_free(js->old_track);
      g_free(js->expected_rspauth);

      if (js->vcard_timer != 0)
            purple_timeout_remove(js->vcard_timer);

      if (js->keepalive_timeout != 0)
            purple_timeout_remove(js->keepalive_timeout);

      g_free(js->srv_rec);
      js->srv_rec = NULL;

      g_free(js->stun_ip);
      js->stun_ip = NULL;

      /* cancel DNS query for STUN, if one is ongoing */
      if (js->stun_query) {
            purple_dnsquery_destroy(js->stun_query);
            js->stun_query = NULL;
      }

      g_free(js);

      gc->proto_data = NULL;
}

void jabber_stream_set_state(JabberStream *js, JabberStreamState state)
{
#define JABBER_CONNECT_STEPS ((js->gsc || js->state == JABBER_STREAM_INITIALIZING_ENCRYPTION) ? 9 : 5)

      js->state = state;
      switch(state) {
            case JABBER_STREAM_OFFLINE:
                  break;
            case JABBER_STREAM_CONNECTING:
                  purple_connection_update_progress(js->gc, _("Connecting"), 1,
                              JABBER_CONNECT_STEPS);
                  break;
            case JABBER_STREAM_INITIALIZING:
                  purple_connection_update_progress(js->gc, _("Initializing Stream"),
                              js->gsc ? 5 : 2, JABBER_CONNECT_STEPS);
                  jabber_stream_init(js);
                  break;
            case JABBER_STREAM_INITIALIZING_ENCRYPTION:
                  purple_connection_update_progress(js->gc, _("Initializing SSL/TLS"),
                                                                    6, JABBER_CONNECT_STEPS);
                  break;
            case JABBER_STREAM_AUTHENTICATING:
                  purple_connection_update_progress(js->gc, _("Authenticating"),
                              js->gsc ? 7 : 3, JABBER_CONNECT_STEPS);
                  break;
            case JABBER_STREAM_POST_AUTH:
                  purple_connection_update_progress(js->gc, _("Re-initializing Stream"),
                              (js->gsc ? 8 : 4), JABBER_CONNECT_STEPS);

                  break;
            case JABBER_STREAM_CONNECTED:
                  /* Send initial presence */
                  jabber_presence_send(js, TRUE);
                  purple_connection_set_state(js->gc, PURPLE_CONNECTED);
                  break;
      }

#undef JABBER_CONNECT_STEPS
}

char *jabber_get_next_id(JabberStream *js)
{
      return g_strdup_printf("purple%x", js->next_id++);
}


void jabber_idle_set(PurpleConnection *gc, int idle)
{
      JabberStream *js = gc->proto_data;

      js->idle = idle ? time(NULL) - idle : idle;

      /* send out an updated prescence */
      purple_debug_info("jabber", "sending updated presence for idle\n");
      jabber_presence_send(js, FALSE);
}

void jabber_blocklist_parse_push(JabberStream *js, const char *from,
                                 JabberIqType type, const char *id,
                                 xmlnode *child)
{
      JabberIq *result;
      xmlnode *item;
      PurpleAccount *account;
      gboolean is_block;

      if (!jabber_is_own_account(js, from)) {
            xmlnode *error, *x;
            result = jabber_iq_new(js, JABBER_IQ_ERROR);
            xmlnode_set_attrib(result->node, "id", id);
            if (from)
                  xmlnode_set_attrib(result->node, "to", from);

            error = xmlnode_new_child(result->node, "error");
            xmlnode_set_attrib(error, "type", "cancel");
            x = xmlnode_new_child(error, "not-allowed");
            xmlnode_set_namespace(x, NS_XMPP_STANZAS);

            jabber_iq_send(result);
            return;
      }

      account = purple_connection_get_account(js->gc);
      is_block = g_str_equal(child->name, "block");

      item = xmlnode_get_child(child, "item");
      if (!is_block && item == NULL) {
            /* Unblock everyone */
            purple_debug_info("jabber", "Received unblock push. Unblocking everyone.\n");

            while (account->deny != NULL) {
                  purple_privacy_deny_remove(account, account->deny->data, TRUE);
            }
      } else if (item == NULL) {
            /* An empty <block/> is bogus */
            xmlnode *error, *x;
            result = jabber_iq_new(js, JABBER_IQ_ERROR);
            xmlnode_set_attrib(result->node, "id", id);

            error = xmlnode_new_child(result->node, "error");
            xmlnode_set_attrib(error, "type", "modify");
            x = xmlnode_new_child(error, "bad-request");
            xmlnode_set_namespace(x, NS_XMPP_STANZAS);

            jabber_iq_send(result);
            return;
      } else {
            for ( ; item; item = xmlnode_get_next_twin(item)) {
                  const char *jid = xmlnode_get_attrib(item, "jid");
                  if (jid == NULL || *jid == '\0')
                        continue;

                  if (is_block)
                        purple_privacy_deny_add(account, jid, TRUE);
                  else
                        purple_privacy_deny_remove(account, jid, TRUE);
            }
      }

      result = jabber_iq_new(js, JABBER_IQ_RESULT);
      xmlnode_set_attrib(result->node, "id", id);
      jabber_iq_send(result);
}

static void jabber_blocklist_parse(JabberStream *js, const char *from,
                                   JabberIqType type, const char *id,
                                   xmlnode *packet, gpointer data)
{
      xmlnode *blocklist, *item;
      PurpleAccount *account;

      blocklist = xmlnode_get_child_with_namespace(packet,
                  "blocklist", NS_SIMPLE_BLOCKING);
      account = purple_connection_get_account(js->gc);

      if (type == JABBER_IQ_ERROR || blocklist == NULL)
            return;

      /* This is the only privacy method supported by XEP-0191 */
      if (account->perm_deny != PURPLE_PRIVACY_DENY_USERS)
            account->perm_deny = PURPLE_PRIVACY_DENY_USERS;

      /*
       * TODO: When account->deny is something more than a hash table, this can
       * be re-written to find the set intersection and difference.
       */
      while (account->deny)
            purple_privacy_deny_remove(account, account->deny->data, TRUE);

      item = xmlnode_get_child(blocklist, "item");
      while (item != NULL) {
            const char *jid = xmlnode_get_attrib(item, "jid");
            purple_privacy_deny_add(account, jid, TRUE);
            item = xmlnode_get_next_twin(item);
      }
}

void jabber_request_block_list(JabberStream *js)
{
      JabberIq *iq;
      xmlnode *blocklist;

      iq = jabber_iq_new(js, JABBER_IQ_GET);

      blocklist = xmlnode_new_child(iq->node, "blocklist");
      xmlnode_set_namespace(blocklist, NS_SIMPLE_BLOCKING);

      jabber_iq_set_callback(iq, jabber_blocklist_parse, NULL);

      jabber_iq_send(iq);
}

void jabber_add_deny(PurpleConnection *gc, const char *who)
{
      JabberStream *js;
      JabberIq *iq;
      xmlnode *block, *item;

      g_return_if_fail(who != NULL && *who != '\0');

      js = purple_connection_get_protocol_data(gc);
      if (js == NULL)
            return;

      if (js->server_caps & JABBER_CAP_GOOGLE_ROSTER)
      {
            jabber_google_roster_add_deny(js, who);
            return;
      }

      if (!(js->server_caps & JABBER_CAP_BLOCKING))
      {
            purple_notify_error(NULL, _("Server doesn't support blocking"),
                                          _("Server doesn't support blocking"), NULL);
            return;
      }

      iq = jabber_iq_new(js, JABBER_IQ_SET);

      block = xmlnode_new_child(iq->node, "block");
      xmlnode_set_namespace(block, NS_SIMPLE_BLOCKING);

      item = xmlnode_new_child(block, "item");
      xmlnode_set_attrib(item, "jid", who);

      jabber_iq_send(iq);
}

void jabber_rem_deny(PurpleConnection *gc, const char *who)
{
      JabberStream *js;
      JabberIq *iq;
      xmlnode *unblock, *item;

      g_return_if_fail(who != NULL && *who != '\0');

      js = purple_connection_get_protocol_data(gc);
      if (js == NULL)
            return;

      if (js->server_caps & JABBER_CAP_GOOGLE_ROSTER)
      {
            jabber_google_roster_rem_deny(js, who);
            return;
      }

      if (!(js->server_caps & JABBER_CAP_BLOCKING))
            return;

      iq = jabber_iq_new(js, JABBER_IQ_SET);

      unblock = xmlnode_new_child(iq->node, "unblock");
      xmlnode_set_namespace(unblock, NS_SIMPLE_BLOCKING);

      item = xmlnode_new_child(unblock, "item");
      xmlnode_set_attrib(item, "jid", who);

      jabber_iq_send(iq);
}

void jabber_add_feature(const char *namespace, JabberFeatureEnabled cb) {
      JabberFeature *feat;

      g_return_if_fail(namespace != NULL);

      feat = g_new0(JabberFeature,1);
      feat->namespace = g_strdup(namespace);
      feat->is_enabled = cb;

      /* try to remove just in case it already exists in the list */
      jabber_remove_feature(namespace);

      jabber_features = g_list_append(jabber_features, feat);
}

void jabber_remove_feature(const char *namespace) {
      GList *feature;
      for(feature = jabber_features; feature; feature = feature->next) {
            JabberFeature *feat = (JabberFeature*)feature->data;
            if(!strcmp(feat->namespace, namespace)) {
                  g_free(feat->namespace);
                  g_free(feature->data);
                  jabber_features = g_list_delete_link(jabber_features, feature);
                  break;
            }
      }
}

static void jabber_features_destroy(void)
{
      while (jabber_features) {
            JabberFeature *feature = jabber_features->data;
            g_free(feature->namespace);
            g_free(feature);
            jabber_features = g_list_delete_link(jabber_features, jabber_features);
      }
}

void jabber_add_identity(const gchar *category, const gchar *type, const gchar *lang, const gchar *name) {
      GList *identity;
      JabberIdentity *ident;
      /* both required according to XEP-0030 */
      g_return_if_fail(category != NULL);
      g_return_if_fail(type != NULL);

      for(identity = jabber_identities; identity; identity = identity->next) {
            JabberIdentity *ident = (JabberIdentity*)identity->data;
            if (!strcmp(ident->category, category) &&
                !strcmp(ident->type, type) &&
                ((!ident->lang && !lang) || (ident->lang && lang && !strcmp(ident->lang, lang)))) {
                  return;
            }
      }

      ident = g_new0(JabberIdentity, 1);
      ident->category = g_strdup(category);
      ident->type = g_strdup(type);
      ident->lang = g_strdup(lang);
      ident->name = g_strdup(name);
      jabber_identities = g_list_prepend(jabber_identities, ident);
}

static void jabber_identities_destroy(void)
{
      while (jabber_identities) {
            JabberIdentity *id = jabber_identities->data;
            g_free(id->category);
            g_free(id->type);
            g_free(id->lang);
            g_free(id->name);
            g_free(id);
            jabber_identities = g_list_delete_link(jabber_identities, jabber_identities);
      }
}

gboolean jabber_stream_is_ssl(JabberStream *js)
{
      return (js->bosh && jabber_bosh_connection_is_ssl(js->bosh)) ||
             (!js->bosh && js->gsc);
}

const char *jabber_list_icon(PurpleAccount *a, PurpleBuddy *b)
{
      return "jabber";
}

const char* jabber_list_emblem(PurpleBuddy *b)
{
      JabberStream *js;
      JabberBuddy *jb = NULL;
      PurpleConnection *gc = purple_account_get_connection(purple_buddy_get_account(b));

      if(!gc)
            return NULL;

      js = gc->proto_data;
      if(js)
            jb = jabber_buddy_find(js, purple_buddy_get_name(b), FALSE);

      if(!PURPLE_BUDDY_IS_ONLINE(b)) {
            if(jb && (jb->subscription & JABBER_SUB_PENDING ||
                              !(jb->subscription & JABBER_SUB_TO)))
                  return "not-authorized";
      }

      if (jb) {
            JabberBuddyResource *jbr = jabber_buddy_find_resource(jb, NULL);
            if (jbr) {
                  const gchar *client_type = 
                        jabber_resource_get_identity_category_type(jbr, "client");
            
                  if (client_type) {
                        if (strcmp(client_type, "phone") == 0) {
                              return "mobile";
                        } else if (strcmp(client_type, "web") == 0) {
                              return "external";
                        } else if (strcmp(client_type, "handheld") == 0) {
                              return "hiptop";
                        } else if (strcmp(client_type, "bot") == 0) {
                              return "bot";
                        }
                        /* the default value "pc" falls through and has no emblem */
                  }
            }
      }
            
      return NULL;
}

char *jabber_status_text(PurpleBuddy *b)
{
      char *ret = NULL;
      JabberBuddy *jb = NULL;
      PurpleAccount *account = purple_buddy_get_account(b);
      PurpleConnection *gc = purple_account_get_connection(account);

      if (gc && gc->proto_data)
            jb = jabber_buddy_find(gc->proto_data, purple_buddy_get_name(b), FALSE);

      if(jb && !PURPLE_BUDDY_IS_ONLINE(b) && (jb->subscription & JABBER_SUB_PENDING || !(jb->subscription & JABBER_SUB_TO))) {
            ret = g_strdup(_("Not Authorized"));
      } else if(jb && !PURPLE_BUDDY_IS_ONLINE(b) && jb->error_msg) {
            ret = g_strdup(jb->error_msg);
      } else {
            PurplePresence *presence = purple_buddy_get_presence(b);
            PurpleStatus *status = purple_presence_get_active_status(presence);
            const char *message;

            if((message = purple_status_get_attr_string(status, "message"))) {
                  ret = g_markup_escape_text(message, -1);
            } else if (purple_presence_is_status_primitive_active(presence, PURPLE_STATUS_TUNE)) {
                  PurpleStatus *status = purple_presence_get_status(presence, "tune");
                  const char *title = purple_status_get_attr_string(status, PURPLE_TUNE_TITLE);
                  const char *artist = purple_status_get_attr_string(status, PURPLE_TUNE_ARTIST);
                  const char *album = purple_status_get_attr_string(status, PURPLE_TUNE_ALBUM);
                  ret = purple_util_format_song_info(title, artist, album, NULL);
            }
      }

      return ret;
}

static void
jabber_tooltip_add_resource_text(JabberBuddyResource *jbr,
      PurpleNotifyUserInfo *user_info, gboolean multiple_resources)
{
      char *text = NULL;
      char *res = NULL;
      char *label, *value;
      const char *state;

      if(jbr->status) {
            text = g_markup_escape_text(jbr->status, -1);
      }

      if(jbr->name)
            res = g_strdup_printf(" (%s)", jbr->name);

      state = jabber_buddy_state_get_name(jbr->state);
      if (text != NULL && !purple_utf8_strcasecmp(state, text)) {
            g_free(text);
            text = NULL;
      }

      label = g_strdup_printf("%s%s", _("Status"), (res ? res : ""));
      value = g_strdup_printf("%s%s%s", state, (text ? ": " : ""), (text ? text : ""));

      purple_notify_user_info_add_pair(user_info, label, value);
      g_free(label);
      g_free(value);
      g_free(text);

      /* if the resource is idle, show that */
      /* only show it if there is more than one resource available for
      the buddy, since the "general" idleness will be shown anyway,
      this way we can see see the idleness of lower-priority resources */
      if (jbr->idle && multiple_resources) {
            gchar *idle_str =
                  purple_str_seconds_to_string(time(NULL) - jbr->idle);
            label = g_strdup_printf("%s%s", _("Idle"), (res ? res : ""));
            purple_notify_user_info_add_pair(user_info, label, idle_str);
            g_free(idle_str);
            g_free(label);
      }
      g_free(res);
}

void jabber_tooltip_text(PurpleBuddy *b, PurpleNotifyUserInfo *user_info, gboolean full)
{
      JabberBuddy *jb;
      PurpleAccount *account;
      PurpleConnection *gc;

      g_return_if_fail(b != NULL);

      account = purple_buddy_get_account(b);
      g_return_if_fail(account != NULL);

      gc = purple_account_get_connection(account);
      g_return_if_fail(gc != NULL);
      g_return_if_fail(gc->proto_data != NULL);

      jb = jabber_buddy_find(gc->proto_data, purple_buddy_get_name(b), FALSE);

      if(jb) {
            JabberBuddyResource *jbr = NULL;
            PurplePresence *presence = purple_buddy_get_presence(b);
            const char *sub;
            GList *l;
            const char *mood;
            gboolean multiple_resources =
                  jb->resources && g_list_next(jb->resources);
            JabberBuddyResource *top_jbr = jabber_buddy_find_resource(jb, NULL);

            /* resource-specific info for the top resource */
            if (top_jbr) {
                  jabber_tooltip_add_resource_text(top_jbr, user_info,
                        multiple_resources);
            }

            for(l=jb->resources; l; l = l->next) {
                  jbr = l->data;
                  /* the remaining resources */
                  if (jbr != top_jbr) {
                        jabber_tooltip_add_resource_text(jbr, user_info,
                              multiple_resources);
                  }
            }

            if (full) {
                  PurpleStatus *status;

                  status = purple_presence_get_active_status(presence);
                  mood = purple_status_get_attr_string(status, "mood");
                  if(mood != NULL) {
                        const char *moodtext;
                        moodtext = purple_status_get_attr_string(status, "moodtext");
                        if(moodtext != NULL) {
                              char *moodplustext = g_strdup_printf("%s (%s)", mood, moodtext);

                              purple_notify_user_info_add_pair(user_info, _("Mood"), moodplustext);
                              g_free(moodplustext);
                        } else
                              purple_notify_user_info_add_pair(user_info, _("Mood"), mood);
                  }
                  if (purple_presence_is_status_primitive_active(presence, PURPLE_STATUS_TUNE)) {
                        PurpleStatus *tune = purple_presence_get_status(presence, "tune");
                        const char *title = purple_status_get_attr_string(tune, PURPLE_TUNE_TITLE);
                        const char *artist = purple_status_get_attr_string(tune, PURPLE_TUNE_ARTIST);
                        const char *album = purple_status_get_attr_string(tune, PURPLE_TUNE_ALBUM);
                        char *playing = purple_util_format_song_info(title, artist, album, NULL);
                        if (playing) {
                              purple_notify_user_info_add_pair(user_info, _("Now Listening"), playing);
                              g_free(playing);
                        }
                  }

                  if(jb->subscription & JABBER_SUB_FROM) {
                        if(jb->subscription & JABBER_SUB_TO)
                              sub = _("Both");
                        else if(jb->subscription & JABBER_SUB_PENDING)
                              sub = _("From (To pending)");
                        else
                              sub = _("From");
                  } else {
                        if(jb->subscription & JABBER_SUB_TO)
                              sub = _("To");
                        else if(jb->subscription & JABBER_SUB_PENDING)
                              sub = _("None (To pending)");
                        else
                              sub = _("None");
                  }

                  purple_notify_user_info_add_pair(user_info, _("Subscription"), sub);

            }

            if(!PURPLE_BUDDY_IS_ONLINE(b) && jb->error_msg) {
                  purple_notify_user_info_add_pair(user_info, _("Error"), jb->error_msg);
            }
      }
}

GList *jabber_status_types(PurpleAccount *account)
{
      PurpleStatusType *type;
      GList *types = NULL;
      PurpleValue *priority_value;
      PurpleValue *buzz_enabled;

      priority_value = purple_value_new(PURPLE_TYPE_INT);
      purple_value_set_int(priority_value, 1);
      buzz_enabled = purple_value_new(PURPLE_TYPE_BOOLEAN);
      purple_value_set_boolean(buzz_enabled, TRUE);
      type = purple_status_type_new_with_attrs(PURPLE_STATUS_AVAILABLE,
                  jabber_buddy_state_get_status_id(JABBER_BUDDY_STATE_ONLINE),
                  NULL, TRUE, TRUE, FALSE,
                  "priority", _("Priority"), priority_value,
                  "message", _("Message"), purple_value_new(PURPLE_TYPE_STRING),
                  "mood", _("Mood"), purple_value_new(PURPLE_TYPE_STRING),
                  "moodtext", _("Mood Text"), purple_value_new(PURPLE_TYPE_STRING),
                  "nick", _("Nickname"), purple_value_new(PURPLE_TYPE_STRING),
                  "buzz", _("Allow Buzz"), buzz_enabled,
                  NULL);
      types = g_list_append(types, type);

      priority_value = purple_value_new(PURPLE_TYPE_INT);
      purple_value_set_int(priority_value, 1);
      buzz_enabled = purple_value_new(PURPLE_TYPE_BOOLEAN);
      purple_value_set_boolean(buzz_enabled, TRUE);
      type = purple_status_type_new_with_attrs(PURPLE_STATUS_AVAILABLE,
                  jabber_buddy_state_get_status_id(JABBER_BUDDY_STATE_CHAT),
                  _("Chatty"), TRUE, TRUE, FALSE,
                  "priority", _("Priority"), priority_value,
                  "message", _("Message"), purple_value_new(PURPLE_TYPE_STRING),
                  "mood", _("Mood"), purple_value_new(PURPLE_TYPE_STRING),
                  "moodtext", _("Mood Text"), purple_value_new(PURPLE_TYPE_STRING),
                  "nick", _("Nickname"), purple_value_new(PURPLE_TYPE_STRING),
                  "buzz", _("Allow Buzz"), buzz_enabled,
                  NULL);
      types = g_list_append(types, type);

      priority_value = purple_value_new(PURPLE_TYPE_INT);
      purple_value_set_int(priority_value, 0);
      buzz_enabled = purple_value_new(PURPLE_TYPE_BOOLEAN);
      purple_value_set_boolean(buzz_enabled, TRUE);
      type = purple_status_type_new_with_attrs(PURPLE_STATUS_AWAY,
                  jabber_buddy_state_get_status_id(JABBER_BUDDY_STATE_AWAY),
                  NULL, TRUE, TRUE, FALSE,
                  "priority", _("Priority"), priority_value,
                  "message", _("Message"), purple_value_new(PURPLE_TYPE_STRING),
                  "mood", _("Mood"), purple_value_new(PURPLE_TYPE_STRING),
                  "moodtext", _("Mood Text"), purple_value_new(PURPLE_TYPE_STRING),
                  "nick", _("Nickname"), purple_value_new(PURPLE_TYPE_STRING),
                  "buzz", _("Allow Buzz"), buzz_enabled,
                  NULL);
      types = g_list_append(types, type);

      priority_value = purple_value_new(PURPLE_TYPE_INT);
      purple_value_set_int(priority_value, 0);
      buzz_enabled = purple_value_new(PURPLE_TYPE_BOOLEAN);
      purple_value_set_boolean(buzz_enabled, TRUE);
      type = purple_status_type_new_with_attrs(PURPLE_STATUS_EXTENDED_AWAY,
                  jabber_buddy_state_get_status_id(JABBER_BUDDY_STATE_XA),
                  NULL, TRUE, TRUE, FALSE,
                  "priority", _("Priority"), priority_value,
                  "message", _("Message"), purple_value_new(PURPLE_TYPE_STRING),
                  "mood", _("Mood"), purple_value_new(PURPLE_TYPE_STRING),
                  "moodtext", _("Mood Text"), purple_value_new(PURPLE_TYPE_STRING),
                  "nick", _("Nickname"), purple_value_new(PURPLE_TYPE_STRING),
                  "buzz", _("Allow Buzz"), buzz_enabled,
                  NULL);
      types = g_list_append(types, type);

      priority_value = purple_value_new(PURPLE_TYPE_INT);
      purple_value_set_int(priority_value, 0);
      type = purple_status_type_new_with_attrs(PURPLE_STATUS_UNAVAILABLE,
                  jabber_buddy_state_get_status_id(JABBER_BUDDY_STATE_DND),
                  _("Do Not Disturb"), TRUE, TRUE, FALSE,
                  "priority", _("Priority"), priority_value,
                  "message", _("Message"), purple_value_new(PURPLE_TYPE_STRING),
                  "mood", _("Mood"), purple_value_new(PURPLE_TYPE_STRING),
                  "moodtext", _("Mood Text"), purple_value_new(PURPLE_TYPE_STRING),
                  "nick", _("Nickname"), purple_value_new(PURPLE_TYPE_STRING),
                  NULL);
      types = g_list_append(types, type);

      /*
      if(js->protocol_version == JABBER_PROTO_0_9)
            m = g_list_append(m, _("Invisible"));
      */

      type = purple_status_type_new_with_attrs(PURPLE_STATUS_OFFLINE,
                  jabber_buddy_state_get_status_id(JABBER_BUDDY_STATE_UNAVAILABLE),
                  NULL, TRUE, TRUE, FALSE,
                  "message", _("Message"), purple_value_new(PURPLE_TYPE_STRING),
                  NULL);
      types = g_list_append(types, type);

      type = purple_status_type_new_with_attrs(PURPLE_STATUS_TUNE,
                  "tune", NULL, FALSE, TRUE, TRUE,
                  PURPLE_TUNE_ARTIST, _("Tune Artist"), purple_value_new(PURPLE_TYPE_STRING),
                  PURPLE_TUNE_TITLE, _("Tune Title"), purple_value_new(PURPLE_TYPE_STRING),
                  PURPLE_TUNE_ALBUM, _("Tune Album"), purple_value_new(PURPLE_TYPE_STRING),
                  PURPLE_TUNE_GENRE, _("Tune Genre"), purple_value_new(PURPLE_TYPE_STRING),
                  PURPLE_TUNE_COMMENT, _("Tune Comment"), purple_value_new(PURPLE_TYPE_STRING),
                  PURPLE_TUNE_TRACK, _("Tune Track"), purple_value_new(PURPLE_TYPE_STRING),
                  PURPLE_TUNE_TIME, _("Tune Time"), purple_value_new(PURPLE_TYPE_INT),
                  PURPLE_TUNE_YEAR, _("Tune Year"), purple_value_new(PURPLE_TYPE_INT),
                  PURPLE_TUNE_URL, _("Tune URL"), purple_value_new(PURPLE_TYPE_STRING),
                  NULL);
      types = g_list_append(types, type);

      return types;
}

static void
jabber_password_change_result_cb(JabberStream *js, const char *from,
                                 JabberIqType type, const char *id,
                                 xmlnode *packet, gpointer data)
{
      if (type == JABBER_IQ_RESULT) {
            purple_notify_info(js->gc, _("Password Changed"), _("Password Changed"),
                        _("Your password has been changed."));

            purple_account_set_password(js->gc->account, (char *)data);
      } else {
            char *msg = jabber_parse_error(js, packet, NULL);

            purple_notify_error(js->gc, _("Error changing password"),
                        _("Error changing password"), msg);
            g_free(msg);
      }

      g_free(data);
}

static void jabber_password_change_cb(JabberStream *js,
            PurpleRequestFields *fields)
{
      const char *p1, *p2;
      JabberIq *iq;
      xmlnode *query, *y;

      p1 = purple_request_fields_get_string(fields, "password1");
      p2 = purple_request_fields_get_string(fields, "password2");

      if(strcmp(p1, p2)) {
            purple_notify_error(js->gc, NULL, _("New passwords do not match."), NULL);
            return;
      }

      iq = jabber_iq_new_query(js, JABBER_IQ_SET, "jabber:iq:register");

      xmlnode_set_attrib(iq->node, "to", js->user->domain);

      query = xmlnode_get_child(iq->node, "query");

      y = xmlnode_new_child(query, "username");
      xmlnode_insert_data(y, js->user->node, -1);
      y = xmlnode_new_child(query, "password");
      xmlnode_insert_data(y, p1, -1);

      jabber_iq_set_callback(iq, jabber_password_change_result_cb, g_strdup(p1));

      jabber_iq_send(iq);
}

static void jabber_password_change(PurplePluginAction *action)
{

      PurpleConnection *gc = (PurpleConnection *) action->context;
      JabberStream *js = gc->proto_data;
      PurpleRequestFields *fields;
      PurpleRequestFieldGroup *group;
      PurpleRequestField *field;

      fields = purple_request_fields_new();
      group = purple_request_field_group_new(NULL);
      purple_request_fields_add_group(fields, group);

      field = purple_request_field_string_new("password1", _("Password"),
                  "", FALSE);
      purple_request_field_string_set_masked(field, TRUE);
      purple_request_field_set_required(field, TRUE);
      purple_request_field_group_add_field(group, field);

      field = purple_request_field_string_new("password2", _("Password (again)"),
                  "", FALSE);
      purple_request_field_string_set_masked(field, TRUE);
      purple_request_field_set_required(field, TRUE);
      purple_request_field_group_add_field(group, field);

      purple_request_fields(js->gc, _("Change XMPP Password"),
                  _("Change XMPP Password"), _("Please enter your new password"),
                  fields, _("OK"), G_CALLBACK(jabber_password_change_cb),
                  _("Cancel"), NULL,
                  purple_connection_get_account(gc), NULL, NULL,
                  js);
}

GList *jabber_actions(PurplePlugin *plugin, gpointer context)
{
      PurpleConnection *gc = (PurpleConnection *) context;
      JabberStream *js = gc->proto_data;
      GList *m = NULL;
      PurplePluginAction *act;

      act = purple_plugin_action_new(_("Set User Info..."),
                                   jabber_setup_set_info);
      m = g_list_append(m, act);

      /* if (js->protocol_options & CHANGE_PASSWORD) { */
            act = purple_plugin_action_new(_("Change Password..."),
                                         jabber_password_change);
            m = g_list_append(m, act);
      /* } */

      act = purple_plugin_action_new(_("Search for Users..."),
                                   jabber_user_search_begin);
      m = g_list_append(m, act);

      purple_debug_info("jabber", "jabber_actions: have pep: %s\n", js->pep?"YES":"NO");

      if(js->pep)
            jabber_pep_init_actions(&m);

      if(js->commands)
            jabber_adhoc_init_server_commands(js, &m);

      return m;
}

PurpleChat *jabber_find_blist_chat(PurpleAccount *account, const char *name)
{
      PurpleBlistNode *gnode, *cnode;
      JabberID *jid;

      if(!(jid = jabber_id_new(name)))
            return NULL;

      for(gnode = purple_blist_get_root(); gnode;
                  gnode = purple_blist_node_get_sibling_next(gnode)) {
            for(cnode = purple_blist_node_get_first_child(gnode);
                        cnode;
                        cnode = purple_blist_node_get_sibling_next(cnode)) {
                  PurpleChat *chat = (PurpleChat*)cnode;
                  const char *room, *server;
                  GHashTable *components;
                  if(!PURPLE_BLIST_NODE_IS_CHAT(cnode))
                        continue;

                  if (purple_chat_get_account(chat) != account)
                        continue;

                  components = purple_chat_get_components(chat);
                  if(!(room = g_hash_table_lookup(components, "room")))
                        continue;
                  if(!(server = g_hash_table_lookup(components, "server")))
                        continue;

                  if(jid->node && jid->domain &&
                              !g_utf8_collate(room, jid->node) && !g_utf8_collate(server, jid->domain)) {
                        jabber_id_free(jid);
                        return chat;
                  }
            }
      }
      jabber_id_free(jid);
      return NULL;
}

void jabber_convo_closed(PurpleConnection *gc, const char *who)
{
      JabberStream *js = gc->proto_data;
      JabberID *jid;
      JabberBuddy *jb;
      JabberBuddyResource *jbr;

      if(!(jid = jabber_id_new(who)))
            return;

      if((jb = jabber_buddy_find(js, who, TRUE)) &&
                  (jbr = jabber_buddy_find_resource(jb, jid->resource))) {
            if(jbr->thread_id) {
                  g_free(jbr->thread_id);
                  jbr->thread_id = NULL;
            }
      }

      jabber_id_free(jid);
}


char *jabber_parse_error(JabberStream *js,
                         xmlnode *packet,
                         PurpleConnectionError *reason)
{
      xmlnode *error;
      const char *code = NULL, *text = NULL;
      const char *xmlns = xmlnode_get_namespace(packet);
      char *cdata = NULL;

#define SET_REASON(x) \
      if(reason != NULL) { *reason = x; }

      if((error = xmlnode_get_child(packet, "error"))) {
            cdata = xmlnode_get_data(error);
            code = xmlnode_get_attrib(error, "code");

            /* Stanza errors */
            if(xmlnode_get_child(error, "bad-request")) {
                  text = _("Bad Request");
            } else if(xmlnode_get_child(error, "conflict")) {
                  text = _("Conflict");
            } else if(xmlnode_get_child(error, "feature-not-implemented")) {
                  text = _("Feature Not Implemented");
            } else if(xmlnode_get_child(error, "forbidden")) {
                  text = _("Forbidden");
            } else if(xmlnode_get_child(error, "gone")) {
                  text = _("Gone");
            } else if(xmlnode_get_child(error, "internal-server-error")) {
                  text = _("Internal Server Error");
            } else if(xmlnode_get_child(error, "item-not-found")) {
                  text = _("Item Not Found");
            } else if(xmlnode_get_child(error, "jid-malformed")) {
                  text = _("Malformed XMPP ID");
            } else if(xmlnode_get_child(error, "not-acceptable")) {
                  text = _("Not Acceptable");
            } else if(xmlnode_get_child(error, "not-allowed")) {
                  text = _("Not Allowed");
            } else if(xmlnode_get_child(error, "not-authorized")) {
                  text = _("Not Authorized");
            } else if(xmlnode_get_child(error, "payment-required")) {
                  text = _("Payment Required");
            } else if(xmlnode_get_child(error, "recipient-unavailable")) {
                  text = _("Recipient Unavailable");
            } else if(xmlnode_get_child(error, "redirect")) {
                  /* XXX */
            } else if(xmlnode_get_child(error, "registration-required")) {
                  text = _("Registration Required");
            } else if(xmlnode_get_child(error, "remote-server-not-found")) {
                  text = _("Remote Server Not Found");
            } else if(xmlnode_get_child(error, "remote-server-timeout")) {
                  text = _("Remote Server Timeout");
            } else if(xmlnode_get_child(error, "resource-constraint")) {
                  text = _("Server Overloaded");
            } else if(xmlnode_get_child(error, "service-unavailable")) {
                  text = _("Service Unavailable");
            } else if(xmlnode_get_child(error, "subscription-required")) {
                  text = _("Subscription Required");
            } else if(xmlnode_get_child(error, "unexpected-request")) {
                  text = _("Unexpected Request");
            } else if(xmlnode_get_child(error, "undefined-condition")) {
                  text = _("Unknown Error");
            }
      } else if(xmlns && !strcmp(xmlns, NS_XMPP_SASL)) {
            /* Most common reason can be the default */
            SET_REASON(PURPLE_CONNECTION_ERROR_NETWORK_ERROR);
            if(xmlnode_get_child(packet, "aborted")) {
                  text = _("Authorization Aborted");
            } else if(xmlnode_get_child(packet, "incorrect-encoding")) {
                  text = _("Incorrect encoding in authorization");
            } else if(xmlnode_get_child(packet, "invalid-authzid")) {
                  text = _("Invalid authzid");
            } else if(xmlnode_get_child(packet, "invalid-mechanism")) {
                  text = _("Invalid Authorization Mechanism");
            } else if(xmlnode_get_child(packet, "mechanism-too-weak")) {
                  SET_REASON(PURPLE_CONNECTION_ERROR_AUTHENTICATION_IMPOSSIBLE);
                  text = _("Authorization mechanism too weak");
            } else if(xmlnode_get_child(packet, "not-authorized")) {
                  SET_REASON(PURPLE_CONNECTION_ERROR_AUTHENTICATION_FAILED);
                  /* Clear the pasword if it isn't being saved */
                  if (!purple_account_get_remember_password(js->gc->account))
                        purple_account_set_password(js->gc->account, NULL);
                  text = _("Not Authorized");
            } else if(xmlnode_get_child(packet, "temporary-auth-failure")) {
                  text = _("Temporary Authentication Failure");
            } else {
                  SET_REASON(PURPLE_CONNECTION_ERROR_AUTHENTICATION_FAILED);
                  text = _("Authentication Failure");
            }
      } else if(!strcmp(packet->name, "stream:error") ||
                   (!strcmp(packet->name, "error") && xmlns &&
                        !strcmp(xmlns, NS_XMPP_STREAMS))) {
            /* Most common reason as default: */
            SET_REASON(PURPLE_CONNECTION_ERROR_NETWORK_ERROR);
            if(xmlnode_get_child(packet, "bad-format")) {
                  text = _("Bad Format");
            } else if(xmlnode_get_child(packet, "bad-namespace-prefix")) {
                  text = _("Bad Namespace Prefix");
            } else if(xmlnode_get_child(packet, "conflict")) {
                  SET_REASON(PURPLE_CONNECTION_ERROR_NAME_IN_USE);
                  text = _("Resource Conflict");
            } else if(xmlnode_get_child(packet, "connection-timeout")) {
                  text = _("Connection Timeout");
            } else if(xmlnode_get_child(packet, "host-gone")) {
                  text = _("Host Gone");
            } else if(xmlnode_get_child(packet, "host-unknown")) {
                  text = _("Host Unknown");
            } else if(xmlnode_get_child(packet, "improper-addressing")) {
                  text = _("Improper Addressing");
            } else if(xmlnode_get_child(packet, "internal-server-error")) {
                  text = _("Internal Server Error");
            } else if(xmlnode_get_child(packet, "invalid-id")) {
                  text = _("Invalid ID");
            } else if(xmlnode_get_child(packet, "invalid-namespace")) {
                  text = _("Invalid Namespace");
            } else if(xmlnode_get_child(packet, "invalid-xml")) {
                  text = _("Invalid XML");
            } else if(xmlnode_get_child(packet, "nonmatching-hosts")) {
                  text = _("Non-matching Hosts");
            } else if(xmlnode_get_child(packet, "not-authorized")) {
                  text = _("Not Authorized");
            } else if(xmlnode_get_child(packet, "policy-violation")) {
                  text = _("Policy Violation");
            } else if(xmlnode_get_child(packet, "remote-connection-failed")) {
                  text = _("Remote Connection Failed");
            } else if(xmlnode_get_child(packet, "resource-constraint")) {
                  text = _("Resource Constraint");
            } else if(xmlnode_get_child(packet, "restricted-xml")) {
                  text = _("Restricted XML");
            } else if(xmlnode_get_child(packet, "see-other-host")) {
                  text = _("See Other Host");
            } else if(xmlnode_get_child(packet, "system-shutdown")) {
                  text = _("System Shutdown");
            } else if(xmlnode_get_child(packet, "undefined-condition")) {
                  text = _("Undefined Condition");
            } else if(xmlnode_get_child(packet, "unsupported-encoding")) {
                  text = _("Unsupported Encoding");
            } else if(xmlnode_get_child(packet, "unsupported-stanza-type")) {
                  text = _("Unsupported Stanza Type");
            } else if(xmlnode_get_child(packet, "unsupported-version")) {
                  text = _("Unsupported Version");
            } else if(xmlnode_get_child(packet, "xml-not-well-formed")) {
                  text = _("XML Not Well Formed");
            } else {
                  text = _("Stream Error");
            }
      }

#undef SET_REASON

      if(text || cdata) {
            char *ret = g_strdup_printf("%s%s%s", code ? code : "",
                        code ? ": " : "", text ? text : cdata);
            g_free(cdata);
            return ret;
      } else {
            return NULL;
      }
}

static PurpleCmdRet jabber_cmd_chat_config(PurpleConversation *conv,
            const char *cmd, char **args, char **error, void *data)
{
      JabberChat *chat = jabber_chat_find_by_conv(conv);

      if (!chat)
            return PURPLE_CMD_RET_FAILED;

      jabber_chat_request_room_configure(chat);
      return PURPLE_CMD_RET_OK;
}

static PurpleCmdRet jabber_cmd_chat_register(PurpleConversation *conv,
            const char *cmd, char **args, char **error, void *data)
{
      JabberChat *chat = jabber_chat_find_by_conv(conv);

      if (!chat)
            return PURPLE_CMD_RET_FAILED;

      jabber_chat_register(chat);
      return PURPLE_CMD_RET_OK;
}

static PurpleCmdRet jabber_cmd_chat_topic(PurpleConversation *conv,
            const char *cmd, char **args, char **error, void *data)
{
      JabberChat *chat = jabber_chat_find_by_conv(conv);

      if (!chat)
            return PURPLE_CMD_RET_FAILED;

      if (args && args[0] && *args[0])
            jabber_chat_change_topic(chat, args[0]);
      else {
            const char *cur = purple_conv_chat_get_topic(PURPLE_CONV_CHAT(conv));
            char *buf, *tmp, *tmp2;

            if (cur) {
                  tmp = g_markup_escape_text(cur, -1);
                  tmp2 = purple_markup_linkify(tmp);
                  buf = g_strdup_printf(_("current topic is: %s"), tmp2);
                  g_free(tmp);
                  g_free(tmp2);
            } else
                  buf = g_strdup(_("No topic is set"));
            purple_conv_chat_write(PURPLE_CONV_CHAT(conv), "", buf,
                        PURPLE_MESSAGE_SYSTEM | PURPLE_MESSAGE_NO_LOG, time(NULL));
            g_free(buf);
      }

      return PURPLE_CMD_RET_OK;
}

static PurpleCmdRet jabber_cmd_chat_nick(PurpleConversation *conv,
            const char *cmd, char **args, char **error, void *data)
{
      JabberChat *chat = jabber_chat_find_by_conv(conv);

      if(!chat || !args || !args[0])
            return PURPLE_CMD_RET_FAILED;

      if (!jabber_resourceprep_validate(args[0])) {
            *error = g_strdup(_("Invalid nickname"));
            return PURPLE_CMD_RET_FAILED;
      }

      if (jabber_chat_change_nick(chat, args[0]))
            return PURPLE_CMD_RET_OK;
      else
            return PURPLE_CMD_RET_FAILED;
}

static PurpleCmdRet jabber_cmd_chat_part(PurpleConversation *conv,
            const char *cmd, char **args, char **error, void *data)
{
      JabberChat *chat = jabber_chat_find_by_conv(conv);

      if (!chat)
            return PURPLE_CMD_RET_FAILED;

      jabber_chat_part(chat, args ? args[0] : NULL);
      return PURPLE_CMD_RET_OK;
}

static PurpleCmdRet jabber_cmd_chat_ban(PurpleConversation *conv,
            const char *cmd, char **args, char **error, void *data)
{
      JabberChat *chat = jabber_chat_find_by_conv(conv);

      if(!chat || !args || !args[0])
            return PURPLE_CMD_RET_FAILED;

      if(!jabber_chat_ban_user(chat, args[0], args[1])) {
            *error = g_strdup_printf(_("Unable to ban user %s"), args[0]);
            return PURPLE_CMD_RET_FAILED;
      }

      return PURPLE_CMD_RET_OK;
}

static PurpleCmdRet jabber_cmd_chat_affiliate(PurpleConversation *conv,
            const char *cmd, char **args, char **error, void *data)
{
      JabberChat *chat = jabber_chat_find_by_conv(conv);

      if (!chat || !args || !args[0])
            return PURPLE_CMD_RET_FAILED;

      if (strcmp(args[0], "owner") != 0 &&
          strcmp(args[0], "admin") != 0 &&
          strcmp(args[0], "member") != 0 &&
          strcmp(args[0], "outcast") != 0 &&
          strcmp(args[0], "none") != 0) {
            *error = g_strdup_printf(_("Unknown affiliation: \"%s\""), args[0]);
            return PURPLE_CMD_RET_FAILED;
      }

      if (args[1]) {
            int i;
            char **nicks = g_strsplit(args[1], " ", -1);

            for (i = 0; nicks[i]; ++i)
                  if (!jabber_chat_affiliate_user(chat, nicks[i], args[0])) {
                        *error = g_strdup_printf(_("Unable to affiliate user %s as \"%s\""), nicks[i], args[0]);
                        g_strfreev(nicks);
                        return PURPLE_CMD_RET_FAILED;
                  }

            g_strfreev(nicks);
      } else {
            jabber_chat_affiliation_list(chat, args[0]);
      }

      return PURPLE_CMD_RET_OK;
}

static PurpleCmdRet jabber_cmd_chat_role(PurpleConversation *conv,
            const char *cmd, char **args, char **error, void *data)
{
      JabberChat *chat = jabber_chat_find_by_conv(conv);

      if (!chat || !args || !args[0])
            return PURPLE_CMD_RET_FAILED;

      if (strcmp(args[0], "moderator") != 0 &&
          strcmp(args[0], "participant") != 0 &&
          strcmp(args[0], "visitor") != 0 &&
          strcmp(args[0], "none") != 0) {
            *error = g_strdup_printf(_("Unknown role: \"%s\""), args[0]);
            return PURPLE_CMD_RET_FAILED;
      }

      if (args[1]) {
            int i;
            char **nicks = g_strsplit(args[1], " ", -1);

            for (i = 0; nicks[i]; i++)
                  if (!jabber_chat_role_user(chat, nicks[i], args[0])) {
                        *error = g_strdup_printf(_("Unable to set role \"%s\" for user: %s"),
                                                             args[0], nicks[i]);
                        return PURPLE_CMD_RET_FAILED;
                  }

            g_strfreev(nicks);
      } else {
            jabber_chat_role_list(chat, args[0]);
      }
      return PURPLE_CMD_RET_OK;
}

static PurpleCmdRet jabber_cmd_chat_invite(PurpleConversation *conv,
            const char *cmd, char **args, char **error, void *data)
{
      if(!args || !args[0])
            return PURPLE_CMD_RET_FAILED;

      jabber_chat_invite(purple_conversation_get_gc(conv),
                  purple_conv_chat_get_id(PURPLE_CONV_CHAT(conv)), args[1] ? args[1] : "",
                  args[0]);

      return PURPLE_CMD_RET_OK;
}

static PurpleCmdRet jabber_cmd_chat_join(PurpleConversation *conv,
            const char *cmd, char **args, char **error, void *data)
{
      JabberChat *chat = jabber_chat_find_by_conv(conv);
      GHashTable *components;

      if(!chat || !args || !args[0])
            return PURPLE_CMD_RET_FAILED;

      components = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, NULL);

      g_hash_table_replace(components, "room", args[0]);
      g_hash_table_replace(components, "server", chat->server);
      g_hash_table_replace(components, "handle", chat->handle);
      if(args[1])
            g_hash_table_replace(components, "password", args[1]);

      jabber_chat_join(purple_conversation_get_gc(conv), components);

      g_hash_table_destroy(components);
      return PURPLE_CMD_RET_OK;
}

static PurpleCmdRet jabber_cmd_chat_kick(PurpleConversation *conv,
            const char *cmd, char **args, char **error, void *data)
{
      JabberChat *chat = jabber_chat_find_by_conv(conv);

      if(!chat || !args || !args[0])
            return PURPLE_CMD_RET_FAILED;

      if(!jabber_chat_kick_user(chat, args[0], args[1])) {
            *error = g_strdup_printf(_("Unable to kick user %s"), args[0]);
            return PURPLE_CMD_RET_FAILED;
      }

      return PURPLE_CMD_RET_OK;
}

static PurpleCmdRet jabber_cmd_chat_msg(PurpleConversation *conv,
            const char *cmd, char **args, char **error, void *data)
{
      JabberChat *chat = jabber_chat_find_by_conv(conv);
      char *who;

      if (!chat)
            return PURPLE_CMD_RET_FAILED;

      who = g_strdup_printf("%s@%s/%s", chat->room, chat->server, args[0]);

      jabber_message_send_im(purple_conversation_get_gc(conv), who, args[1], 0);

      g_free(who);
      return PURPLE_CMD_RET_OK;
}

static PurpleCmdRet jabber_cmd_ping(PurpleConversation *conv,
            const char *cmd, char **args, char **error, void *data)
{
      PurpleAccount *account;
      PurpleConnection *pc;

      if(!args || !args[0])
            return PURPLE_CMD_RET_FAILED;

      account = purple_conversation_get_account(conv);
      pc = purple_account_get_connection(account);

      if(!jabber_ping_jid(purple_connection_get_protocol_data(pc), args[0])) {
            *error = g_strdup_printf(_("Unable to ping user %s"), args[0]);
            return PURPLE_CMD_RET_FAILED;
      }

      return PURPLE_CMD_RET_OK;
}

static gboolean _jabber_send_buzz(JabberStream *js, const char *username, char **error) {

      JabberBuddy *jb;
      JabberBuddyResource *jbr;
      PurpleConnection *gc = js->gc;
      PurpleBuddy *buddy =
            purple_find_buddy(purple_connection_get_account(gc), username);
      const gchar *alias =
            buddy ? purple_buddy_get_contact_alias(buddy) : username;

      if(!username)
            return FALSE;

      jb = jabber_buddy_find(js, username, FALSE);
      if(!jb) {
            *error = g_strdup_printf(_("Unable to buzz, because there is nothing "
                  "known about %s."), alias);
            return FALSE;
      }

      jbr = jabber_buddy_find_resource(jb, NULL);
      if (!jbr) {
            *error = g_strdup_printf(_("Unable to buzz, because %s might be offline."),
                  alias);
            return FALSE;
      }

      if (jabber_resource_has_capability(jbr, NS_ATTENTION)) {
            xmlnode *buzz, *msg = xmlnode_new("message");
            gchar *to;

            to = g_strdup_printf("%s/%s", username, jbr->name);
            xmlnode_set_attrib(msg, "to", to);
            g_free(to);

            /* avoid offline storage */
            xmlnode_set_attrib(msg, "type", "headline");

            buzz = xmlnode_new_child(msg, "attention");
            xmlnode_set_namespace(buzz, NS_ATTENTION);

            jabber_send(js, msg);
            xmlnode_free(msg);

            return TRUE;
      } else {
            *error = g_strdup_printf(_("Unable to buzz, because %s does "
                  "not support it or does not wish to receive buzzes now."), alias);
            return FALSE;
      }
}

static PurpleCmdRet jabber_cmd_buzz(PurpleConversation *conv,
            const char *cmd, char **args, char **error, void *data)
{
      JabberStream *js = conv->account->gc->proto_data;
      const gchar *who;

      if (!args || !args[0]) {
            /* use the buddy from conversation, if it's a one-to-one conversation */
            if (purple_conversation_get_type(conv) == PURPLE_CONV_TYPE_IM) {
                  who = purple_conversation_get_name(conv);
            } else {
                  return PURPLE_CMD_RET_FAILED;
            }
      } else {
            who = args[0];
      }

      if (_jabber_send_buzz(js, who, error)) {
            const gchar *alias;
            gchar *str;
            PurpleBuddy *buddy =
                  purple_find_buddy(purple_connection_get_account(conv->account->gc),
                        who);

            if (buddy != NULL)
                  alias = purple_buddy_get_contact_alias(buddy);
            else
                  alias = who;

            str = g_strdup_printf(_("Buzzing %s..."), alias);
            purple_conversation_write(conv, NULL, str,
                  PURPLE_MESSAGE_SYSTEM|PURPLE_MESSAGE_NOTIFY, time(NULL));
            g_free(str);

            return PURPLE_CMD_RET_OK;
      } else {
            return PURPLE_CMD_RET_FAILED;
      }
}

GList *jabber_attention_types(PurpleAccount *account)
{
      static GList *types = NULL;

      if (!types) {
            types = g_list_append(types, purple_attention_type_new("Buzz", _("Buzz"),
                        _("%s has buzzed you!"), _("Buzzing %s...")));
      }

      return types;
}

gboolean jabber_send_attention(PurpleConnection *gc, const char *username, guint code)
{
      JabberStream *js = gc->proto_data;
      gchar *error = NULL;

      if (!_jabber_send_buzz(js, username, &error)) {
            purple_debug_error("jabber", "jabber_send_attention: jabber_cmd_buzz failed with error: %s\n", error ? error : "(NULL)");
            g_free(error);
            return FALSE;
      }

      return TRUE;
}


gboolean jabber_offline_message(const PurpleBuddy *buddy)
{
      return TRUE;
}

#ifdef USE_VV
gboolean
jabber_audio_enabled(JabberStream *js, const char *namespace)
{
      PurpleMediaManager *manager = purple_media_manager_get();
      PurpleMediaCaps caps = purple_media_manager_get_ui_caps(manager);

      return (caps & (PURPLE_MEDIA_CAPS_AUDIO | PURPLE_MEDIA_CAPS_AUDIO_SINGLE_DIRECTION));
}

gboolean
jabber_video_enabled(JabberStream *js, const char *namespace)
{
      PurpleMediaManager *manager = purple_media_manager_get();
      PurpleMediaCaps caps = purple_media_manager_get_ui_caps(manager);

      return (caps & (PURPLE_MEDIA_CAPS_VIDEO | PURPLE_MEDIA_CAPS_VIDEO_SINGLE_DIRECTION));
}

typedef struct {
      PurpleAccount *account;
      gchar *who;
      PurpleMediaSessionType type;

} JabberMediaRequest;

static void
jabber_media_cancel_cb(JabberMediaRequest *request,
            PurpleRequestFields *fields)
{
      g_free(request->who);
      g_free(request);
}

static void
jabber_media_ok_cb(JabberMediaRequest *request, PurpleRequestFields *fields)
{
      PurpleRequestField *field =
                  purple_request_fields_get_field(fields, "resource");
      int selected_id = purple_request_field_choice_get_value(field);
      GList *labels = purple_request_field_choice_get_labels(field);
      gchar *who = g_strdup_printf("%s/%s", request->who,
                  (gchar*)g_list_nth_data(labels, selected_id));
      jabber_initiate_media(request->account, who, request->type);

      g_free(who);
      g_free(request->who);
      g_free(request);
}
#endif

gboolean
jabber_initiate_media(PurpleAccount *account, const char *who,
                  PurpleMediaSessionType type)
{
#ifdef USE_VV
      JabberStream *js = (JabberStream *)
                  purple_account_get_connection(account)->proto_data;
      JabberBuddy *jb;
      JabberBuddyResource *jbr = NULL;
      char *resource;

      if (!js) {
            purple_debug_error("jabber",
                        "jabber_initiate_media: NULL stream\n");
            return FALSE;
      }


      if((resource = jabber_get_resource(who)) != NULL) {
            /* they've specified a resource, no need to ask or
             * default or anything, just do it */

            jb = jabber_buddy_find(js, who, FALSE);
            jbr = jabber_buddy_find_resource(jb, resource);
            g_free(resource);

            if (type & PURPLE_MEDIA_AUDIO &&
                        !jabber_resource_has_capability(jbr,
                        JINGLE_APP_RTP_SUPPORT_AUDIO) &&
                        jabber_resource_has_capability(jbr, NS_GOOGLE_VOICE))
                  return jabber_google_session_initiate(js, who, type);
            else
                  return jingle_rtp_initiate_media(js, who, type);
      }

      jb = jabber_buddy_find(js, who, FALSE);

      if(!jb || !jb->resources) {
            /* no resources online, we're trying to initiate with someone
             * whose presence we're not subscribed to, or
             * someone who is offline.  Let's inform the user */
            char *msg;

            if(!jb) {
                  msg = g_strdup_printf(_("Unable to initiate media with %s: invalid JID"), who);
            } else if(jb->subscription & JABBER_SUB_TO) {
                  msg = g_strdup_printf(_("Unable to initiate media with %s: user is not online"), who);
            } else {
                  msg = g_strdup_printf(_("Unable to initiate media with %s: not subscribed to user presence"), who);
            }

            purple_notify_error(account, _("Media Initiation Failed"),
                        _("Media Initiation Failed"), msg);
            g_free(msg);
            return FALSE;
      } else if(!jb->resources->next) {
            /* only 1 resource online (probably our most common case)
             * so no need to ask who to initiate with */
            gchar *name;
            gboolean result;
            jbr = jb->resources->data;
            name = g_strdup_printf("%s/%s", who, jbr->name);
            result = jabber_initiate_media(account, name, type);
            g_free(name);
            return result;
      } else {
            /* we've got multiple resources,
             * we need to pick one to initiate with */
            GList *l;
            char *msg;
            PurpleRequestFields *fields;
            PurpleRequestField *field = purple_request_field_choice_new(
                        "resource", _("Resource"), 0);
            PurpleRequestFieldGroup *group;
            JabberMediaRequest *request;

            for(l = jb->resources; l; l = l->next)
            {
                  JabberBuddyResource *ljbr = l->data;
                  PurpleMediaCaps caps;
                  gchar *name;
                  name = g_strdup_printf("%s/%s", who, ljbr->name);
                  caps = jabber_get_media_caps(account, name);
                  g_free(name);

                  if ((type & PURPLE_MEDIA_AUDIO) &&
                              (type & PURPLE_MEDIA_VIDEO)) {
                        if (caps & PURPLE_MEDIA_CAPS_AUDIO_VIDEO) {
                              jbr = ljbr;
                              purple_request_field_choice_add(
                                          field, jbr->name);
                        }
                  } else if (type & (PURPLE_MEDIA_AUDIO) &&
                              (caps & PURPLE_MEDIA_CAPS_AUDIO)) {
                        jbr = ljbr;
                        purple_request_field_choice_add(
                                    field, jbr->name);
                  }else if (type & (PURPLE_MEDIA_VIDEO) &&
                              (caps & PURPLE_MEDIA_CAPS_VIDEO)) {
                        jbr = ljbr;
                        purple_request_field_choice_add(
                                    field, jbr->name);
                  }
            }

            if (jbr == NULL) {
                  purple_debug_error("jabber",
                              "No resources available\n");
                  return FALSE;
            }

            if (g_list_length(purple_request_field_choice_get_labels(
                        field)) <= 1) {
                  gchar *name;
                  gboolean result;
                  purple_request_field_destroy(field);
                  name = g_strdup_printf("%s/%s", who, jbr->name);
                  result = jabber_initiate_media(account, name, type);
                  g_free(name);
                  return result;
            }

            msg = g_strdup_printf(_("Please select the resource of %s with which you would like to start a media session."), who);
            fields = purple_request_fields_new();
            group =     purple_request_field_group_new(NULL);
            request = g_new0(JabberMediaRequest, 1);
            request->account = account;
            request->who = g_strdup(who);
            request->type = type;

            purple_request_field_group_add_field(group, field);
            purple_request_fields_add_group(fields, group);
            purple_request_fields(account, _("Select a Resource"), msg,
                        NULL, fields, _("Initiate Media"),
                        G_CALLBACK(jabber_media_ok_cb), _("Cancel"),
                        G_CALLBACK(jabber_media_cancel_cb),
                        account, who, NULL, request);

            g_free(msg);
            return TRUE;
      }
#endif
      return FALSE;
}

PurpleMediaCaps jabber_get_media_caps(PurpleAccount *account, const char *who)
{
#ifdef USE_VV
      JabberStream *js = (JabberStream *)
                  purple_account_get_connection(account)->proto_data;
      JabberBuddy *jb;
      JabberBuddyResource *jbr;
      PurpleMediaCaps total = PURPLE_MEDIA_CAPS_NONE;
      gchar *resource;
      GList *specific = NULL, *l;

      if (!js) {
            purple_debug_info("jabber",
                        "jabber_can_do_media: NULL stream\n");
            return FALSE;
      }

      jb = jabber_buddy_find(js, who, FALSE);

      if (!jb || !jb->resources) {
            /* no resources online, we're trying to get caps for someone
             * whose presence we're not subscribed to, or
             * someone who is offline. */
            return total;

      } else if ((resource = jabber_get_resource(who)) != NULL) {
            /* they've specified a resource, no need to ask or
             * default or anything, just do it */
            jbr = jabber_buddy_find_resource(jb, resource);
            g_free(resource);

            if (!jbr) {
                  purple_debug_error("jabber", "jabber_get_media_caps:"
                              " Can't find resource %s\n", who);
                  return total;
            }

            l = specific = g_list_prepend(specific, jbr);

      } else {
            /* we've got multiple resources, combine their caps */
            l = jb->resources;
      }

      for (; l; l = l->next) {
            PurpleMediaCaps caps = PURPLE_MEDIA_CAPS_NONE;
            jbr = l->data;

            if (jabber_resource_has_capability(jbr,
                        JINGLE_APP_RTP_SUPPORT_AUDIO))
                  caps |= PURPLE_MEDIA_CAPS_AUDIO_SINGLE_DIRECTION |
                              PURPLE_MEDIA_CAPS_AUDIO;
            if (jabber_resource_has_capability(jbr,
                        JINGLE_APP_RTP_SUPPORT_VIDEO))
                  caps |= PURPLE_MEDIA_CAPS_VIDEO_SINGLE_DIRECTION |
                              PURPLE_MEDIA_CAPS_VIDEO;
            if (caps & PURPLE_MEDIA_CAPS_AUDIO && caps &
                        PURPLE_MEDIA_CAPS_VIDEO)
                  caps |= PURPLE_MEDIA_CAPS_AUDIO_VIDEO;
            if (caps != PURPLE_MEDIA_CAPS_NONE) {
                  if (!jabber_resource_has_capability(jbr,
                              JINGLE_TRANSPORT_ICEUDP) &&
                              !jabber_resource_has_capability(jbr,
                              JINGLE_TRANSPORT_RAWUDP)) {
                        purple_debug_info("jingle-rtp", "Buddy doesn't "
                                    "support the same transport types\n");
                        caps = PURPLE_MEDIA_CAPS_NONE;
                  } else
                        caps |= PURPLE_MEDIA_CAPS_MODIFY_SESSION |
                                    PURPLE_MEDIA_CAPS_CHANGE_DIRECTION;
            }
            if (jabber_resource_has_capability(jbr, NS_GOOGLE_VOICE)) {
                  caps |= PURPLE_MEDIA_CAPS_AUDIO;
                  if (jabber_resource_has_capability(jbr, NS_GOOGLE_VIDEO))
                        caps |= PURPLE_MEDIA_CAPS_AUDIO_VIDEO;
            }

            total |= caps;
      }

      if (specific) {
            g_list_free(specific);
      }

      return total;
#else
      return PURPLE_MEDIA_CAPS_NONE;
#endif
}

gboolean jabber_can_receive_file(PurpleConnection *gc, const char *who)
{
      JabberStream *js = gc->proto_data;

      if (js) {
            JabberBuddy *jb = jabber_buddy_find(js, who, FALSE);
            GList *iter;
            gboolean has_resources_without_caps = FALSE;

            /* if we didn't find a JabberBuddy, we don't have presence for this
             buddy, let's assume they can receive files, disco should tell us
             when actually trying */
            if (jb == NULL)
                  return TRUE;

            /* find out if there is any resources without caps */
            for (iter = jb->resources; iter ; iter = g_list_next(iter)) {
                  JabberBuddyResource *jbr = (JabberBuddyResource *) iter->data;

                  if (!jabber_resource_know_capabilities(jbr)) {
                        has_resources_without_caps = TRUE;
                  }
            }

            if (has_resources_without_caps) {
                  /* there is at least one resource which we don't have caps for, 
                   let's assume they can receive files... */
                  return TRUE;
            } else {
                  /* we have caps for all the resources, see if at least one has
                   right caps */
                  for (iter = jb->resources; iter ; iter = g_list_next(iter)) {
                        JabberBuddyResource *jbr = (JabberBuddyResource *) iter->data;

                        if (jabber_resource_has_capability(jbr,
                                    "http://jabber.org/protocol/si/profile/file-transfer")
                        && (jabber_resource_has_capability(jbr,
                                    NS_BYTESTREAMS)
                              || jabber_resource_has_capability(jbr, NS_IBB))) {
                              return TRUE;
                        }
                  }
                  return FALSE;
            }
      } else {
            return TRUE;
      }
}

void jabber_register_commands(void)
{
      PurpleCmdId id;
      id = purple_cmd_register("config", "", PURPLE_CMD_P_PRPL,
                        PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_PRPL_ONLY,
                        "prpl-jabber", jabber_cmd_chat_config,
                        _("config:  Configure a chat room."), NULL);
      jabber_cmds = g_slist_prepend(jabber_cmds, GUINT_TO_POINTER(id));

      id = purple_cmd_register("configure", "", PURPLE_CMD_P_PRPL,
                        PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_PRPL_ONLY,
                        "prpl-jabber", jabber_cmd_chat_config,
                        _("configure:  Configure a chat room."), NULL);
      jabber_cmds = g_slist_prepend(jabber_cmds, GUINT_TO_POINTER(id));

      id = purple_cmd_register("nick", "s", PURPLE_CMD_P_PRPL,
                        PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_PRPL_ONLY,
                        "prpl-jabber", jabber_cmd_chat_nick,
                        _("nick &lt;new nickname&gt;:  Change your nickname."),
                        NULL);
      jabber_cmds = g_slist_prepend(jabber_cmds, GUINT_TO_POINTER(id));

      id = purple_cmd_register("part", "s", PURPLE_CMD_P_PRPL,
                        PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_PRPL_ONLY |
                        PURPLE_CMD_FLAG_ALLOW_WRONG_ARGS, "prpl-jabber",
                        jabber_cmd_chat_part, _("part [message]:  Leave the room."),
                        NULL);
      jabber_cmds = g_slist_prepend(jabber_cmds, GUINT_TO_POINTER(id));

      id = purple_cmd_register("register", "", PURPLE_CMD_P_PRPL,
                        PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_PRPL_ONLY,
                        "prpl-jabber", jabber_cmd_chat_register,
                        _("register:  Register with a chat room."), NULL);
      jabber_cmds = g_slist_prepend(jabber_cmds, GUINT_TO_POINTER(id));

      /* XXX: there needs to be a core /topic cmd, methinks */
      id = purple_cmd_register("topic", "s", PURPLE_CMD_P_PRPL,
                        PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_PRPL_ONLY |
                        PURPLE_CMD_FLAG_ALLOW_WRONG_ARGS, "prpl-jabber",
                        jabber_cmd_chat_topic,
                        _("topic [new topic]:  View or change the topic."),
                        NULL);
      jabber_cmds = g_slist_prepend(jabber_cmds, GUINT_TO_POINTER(id));

      id = purple_cmd_register("ban", "ws", PURPLE_CMD_P_PRPL,
                        PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_PRPL_ONLY |
                        PURPLE_CMD_FLAG_ALLOW_WRONG_ARGS, "prpl-jabber",
                        jabber_cmd_chat_ban,
                        _("ban &lt;user&gt; [reason]:  Ban a user from the room."),
                        NULL);
      jabber_cmds = g_slist_prepend(jabber_cmds, GUINT_TO_POINTER(id));

      id = purple_cmd_register("affiliate", "ws", PURPLE_CMD_P_PRPL,
                        PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_PRPL_ONLY |
                        PURPLE_CMD_FLAG_ALLOW_WRONG_ARGS, "prpl-jabber",
                        jabber_cmd_chat_affiliate,
                        _("affiliate &lt;owner|admin|member|outcast|none&gt; [nick1] [nick2] ...: Get the users with an affiliation or set users' affiliation with the room."),
                        NULL);
      jabber_cmds = g_slist_prepend(jabber_cmds, GUINT_TO_POINTER(id));

      id = purple_cmd_register("role", "ws", PURPLE_CMD_P_PRPL,
                        PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_PRPL_ONLY |
                        PURPLE_CMD_FLAG_ALLOW_WRONG_ARGS, "prpl-jabber",
                        jabber_cmd_chat_role,
                        _("role &lt;moderator|participant|visitor|none&gt; [nick1] [nick2] ...: Get the users with a role or set users' role with the room."),
                        NULL);
      jabber_cmds = g_slist_prepend(jabber_cmds, GUINT_TO_POINTER(id));

      id = purple_cmd_register("invite", "ws", PURPLE_CMD_P_PRPL,
                        PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_PRPL_ONLY |
                        PURPLE_CMD_FLAG_ALLOW_WRONG_ARGS, "prpl-jabber",
                        jabber_cmd_chat_invite,
                        _("invite &lt;user&gt; [message]:  Invite a user to the room."),
                        NULL);
      jabber_cmds = g_slist_prepend(jabber_cmds, GUINT_TO_POINTER(id));

      id = purple_cmd_register("join", "ws", PURPLE_CMD_P_PRPL,
                        PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_PRPL_ONLY |
                        PURPLE_CMD_FLAG_ALLOW_WRONG_ARGS, "prpl-jabber",
                        jabber_cmd_chat_join,
                        _("join: &lt;room&gt; [password]:  Join a chat on this server."),
                        NULL);
      jabber_cmds = g_slist_prepend(jabber_cmds, GUINT_TO_POINTER(id));

      id = purple_cmd_register("kick", "ws", PURPLE_CMD_P_PRPL,
                        PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_PRPL_ONLY |
                        PURPLE_CMD_FLAG_ALLOW_WRONG_ARGS, "prpl-jabber",
                        jabber_cmd_chat_kick,
                        _("kick &lt;user&gt; [reason]:  Kick a user from the room."),
                        NULL);
      jabber_cmds = g_slist_prepend(jabber_cmds, GUINT_TO_POINTER(id));

      id = purple_cmd_register("msg", "ws", PURPLE_CMD_P_PRPL,
                        PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_PRPL_ONLY,
                        "prpl-jabber", jabber_cmd_chat_msg,
                        _("msg &lt;user&gt; &lt;message&gt;:  Send a private message to another user."),
                        NULL);
      jabber_cmds = g_slist_prepend(jabber_cmds, GUINT_TO_POINTER(id));

      id = purple_cmd_register("ping", "w", PURPLE_CMD_P_PRPL,
                                PURPLE_CMD_FLAG_CHAT | PURPLE_CMD_FLAG_IM |
                                PURPLE_CMD_FLAG_PRPL_ONLY,
                                "prpl-jabber", jabber_cmd_ping,
                                _("ping &lt;jid&gt;:  Ping a user/component/server."),
                                NULL);
      jabber_cmds = g_slist_prepend(jabber_cmds, GUINT_TO_POINTER(id));

      id = purple_cmd_register("buzz", "w", PURPLE_CMD_P_PRPL,
                                PURPLE_CMD_FLAG_IM | PURPLE_CMD_FLAG_PRPL_ONLY |
                                PURPLE_CMD_FLAG_ALLOW_WRONG_ARGS,
                                "prpl-jabber", jabber_cmd_buzz,
                                _("buzz: Buzz a user to get their attention"), NULL);
      jabber_cmds = g_slist_prepend(jabber_cmds, GUINT_TO_POINTER(id));
}

void jabber_unregister_commands(void)
{
      while (jabber_cmds != NULL) {
            purple_cmd_unregister(GPOINTER_TO_UINT(jabber_cmds->data));
            jabber_cmds = g_slist_delete_link(jabber_cmds, jabber_cmds);
      }
}

/* IPC functions */

/**
 * IPC function for determining if a contact supports a certain feature.
 *
 * @param account   The PurpleAccount
 * @param jid       The full JID of the contact.
 * @param feature   The feature's namespace.
 *
 * @return TRUE if supports feature; else FALSE.
 */
static gboolean
jabber_ipc_contact_has_feature(PurpleAccount *account, const gchar *jid,
                               const gchar *feature)
{
      PurpleConnection *gc = purple_account_get_connection(account);
      JabberStream *js;
      JabberBuddy *jb;
      JabberBuddyResource *jbr;
      gchar *resource;

      if (!purple_account_is_connected(account))
            return FALSE;
      js = gc->proto_data;

      if (!(resource = jabber_get_resource(jid)) ||
          !(jb = jabber_buddy_find(js, jid, FALSE)) ||
          !(jbr = jabber_buddy_find_resource(jb, resource))) {
            g_free(resource);
            return FALSE;
      }

      g_free(resource);

      return jabber_resource_has_capability(jbr, feature);
}

static void
jabber_ipc_add_feature(const gchar *feature)
{
      if (!feature)
            return;
      jabber_add_feature(feature, 0);

      /* send presence with new caps info for all connected accounts */
      jabber_caps_broadcast_change();
}

void
jabber_init_plugin(PurplePlugin *plugin)
{
      GHashTable *ui_info = purple_core_get_ui_info();
      const gchar *ui_type;
      const gchar *type = "pc"; /* default client type, if unknown or
                                                unspecified */
      const gchar *ui_name = NULL;

      ui_type = ui_info ? g_hash_table_lookup(ui_info, "client_type") : NULL;
      if (ui_type) {
            if (strcmp(ui_type, "pc") == 0 ||
                  strcmp(ui_type, "console") == 0 ||
                  strcmp(ui_type, "phone") == 0 ||
                  strcmp(ui_type, "handheld") == 0 ||
                  strcmp(ui_type, "web") == 0 ||
                  strcmp(ui_type, "bot") == 0) {
                  type = ui_type;
            }
      }

      if (ui_info)
            ui_name = g_hash_table_lookup(ui_info, "name");
      if (ui_name == NULL)
            ui_name = PACKAGE;

      jabber_add_identity("client", type, NULL, ui_name);

      /* initialize jabber_features list */
      jabber_add_feature(NS_LAST_ACTIVITY, 0);
      jabber_add_feature(NS_OOB_IQ_DATA, 0);
      jabber_add_feature(NS_ENTITY_TIME, 0);
      jabber_add_feature("jabber:iq:version", 0);
      jabber_add_feature("jabber:x:conference", 0);
      jabber_add_feature(NS_BYTESTREAMS, 0);
      jabber_add_feature("http://jabber.org/protocol/caps", 0);
      jabber_add_feature("http://jabber.org/protocol/chatstates", 0);
      jabber_add_feature(NS_DISCO_INFO, 0);
      jabber_add_feature(NS_DISCO_ITEMS, 0);
      jabber_add_feature(NS_IBB, 0);
      jabber_add_feature("http://jabber.org/protocol/muc", 0);
      jabber_add_feature("http://jabber.org/protocol/muc#user", 0);
      jabber_add_feature("http://jabber.org/protocol/si", 0);
      jabber_add_feature("http://jabber.org/protocol/si/profile/file-transfer", 0);
      jabber_add_feature(NS_XHTML_IM, 0);
      jabber_add_feature(NS_PING, 0);

      /* Buzz/Attention */
      jabber_add_feature(NS_ATTENTION, jabber_buzz_isenabled);

      /* Bits Of Binary */
      jabber_add_feature(NS_BOB, 0);

      /* Jingle features! */
      jabber_add_feature(JINGLE, 0);

#ifdef USE_VV
      jabber_add_feature(NS_GOOGLE_PROTOCOL_SESSION, jabber_audio_enabled);
      jabber_add_feature(NS_GOOGLE_VOICE, jabber_audio_enabled);
      jabber_add_feature(NS_GOOGLE_VIDEO, jabber_video_enabled);
      jabber_add_feature(NS_GOOGLE_CAMERA, jabber_video_enabled);
      jabber_add_feature(JINGLE_APP_RTP, 0);
      jabber_add_feature(JINGLE_APP_RTP_SUPPORT_AUDIO, jabber_audio_enabled);
      jabber_add_feature(JINGLE_APP_RTP_SUPPORT_VIDEO, jabber_video_enabled);
      jabber_add_feature(JINGLE_TRANSPORT_RAWUDP, 0);
      jabber_add_feature(JINGLE_TRANSPORT_ICEUDP, 0);
#endif

      jabber_auth_init();

      /* IPC functions */
      purple_plugin_ipc_register(plugin, "contact_has_feature", PURPLE_CALLBACK(jabber_ipc_contact_has_feature),
                                           purple_marshal_BOOLEAN__POINTER_POINTER_POINTER,
                                           purple_value_new(PURPLE_TYPE_BOOLEAN), 3,
                                           purple_value_new(PURPLE_TYPE_SUBTYPE, PURPLE_SUBTYPE_ACCOUNT),
                                           purple_value_new(PURPLE_TYPE_STRING),
                                           purple_value_new(PURPLE_TYPE_STRING));

      purple_plugin_ipc_register(plugin, "add_feature", PURPLE_CALLBACK(jabber_ipc_add_feature),
                                           purple_marshal_VOID__POINTER,
                                           NULL, 1,
                                           purple_value_new(PURPLE_TYPE_STRING));

      /* Modifying these? Look at libxmpp.c:load_plugin for the signal versions */
      purple_plugin_ipc_register(plugin, "register_namespace_watcher",
                                 PURPLE_CALLBACK(jabber_iq_signal_register),
                                 purple_marshal_VOID__POINTER_POINTER,
                                 NULL, 2,
                                 purple_value_new(PURPLE_TYPE_STRING),  /* node */
                                 purple_value_new(PURPLE_TYPE_STRING)); /* namespace */

      purple_plugin_ipc_register(plugin, "unregister_namespace_watcher",
                                 PURPLE_CALLBACK(jabber_iq_signal_unregister),
                                 purple_marshal_VOID__POINTER_POINTER,
                                 NULL, 2,
                                 purple_value_new(PURPLE_TYPE_STRING),  /* node */
                                 purple_value_new(PURPLE_TYPE_STRING)); /* namespace */
}

void
jabber_uninit_plugin(PurplePlugin *plugin)
{
      purple_plugin_ipc_unregister_all(plugin);

      jabber_auth_uninit();
      jabber_features_destroy();
      jabber_identities_destroy();
}

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