res_jabber.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 1999 - 2010, Digium, Inc.
 *
 * Matt O'Gorman <mogorman@digium.com>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */

/*! \file
 * \brief A resource for interfacing Asterisk directly as a client
 * or a component to a XMPP/Jabber compliant server.
 *
 * References:
 * - http://www.xmpp.org - The XMPP standards foundation
 *
 * \extref Iksemel http://code.google.com/p/iksemel/
 *
 * \todo If you unload this module, chan_gtalk/jingle will be dead. How do we handle that?
 * \todo Dialplan applications need RETURN variable, like JABBERSENDSTATUS
 *
 */

/*** MODULEINFO
   <depend>iksemel</depend>
   <use>openssl</use>
   <support_level>extended</support_level>
 ***/

#include "asterisk.h"

ASTERISK_FILE_VERSION(__FILE__, "$Revision: 333569 $")

#include <ctype.h>
#include <iksemel.h>

#include "asterisk/channel.h"
#include "asterisk/jabber.h"
#include "asterisk/file.h"
#include "asterisk/config.h"
#include "asterisk/callerid.h"
#include "asterisk/lock.h"
#include "asterisk/cli.h"
#include "asterisk/app.h"
#include "asterisk/pbx.h"
#include "asterisk/md5.h"
#include "asterisk/acl.h"
#include "asterisk/utils.h"
#include "asterisk/module.h"
#include "asterisk/astobj.h"
#include "asterisk/astdb.h"
#include "asterisk/manager.h"
#include "asterisk/event.h"
#include "asterisk/devicestate.h"

/*** DOCUMENTATION
   <application name="JabberSend" language="en_US">
      <synopsis>
         Sends an XMPP message to a buddy.
      </synopsis>
      <syntax>
         <parameter name="account" required="true">
            <para>The local named account to listen on (specified in
            jabber.conf)</para>
         </parameter>
         <parameter name="jid" required="true">
            <para>Jabber ID of the buddy to send the message to. It can be a
            bare JID (username@domain) or a full JID (username@domain/resource).</para>
         </parameter>
         <parameter name="message" required="true">
            <para>The message to send.</para>
         </parameter>
      </syntax>
      <description>
         <para>Sends the content of <replaceable>message</replaceable> as text message
         from the given <replaceable>account</replaceable> to the buddy identified by
         <replaceable>jid</replaceable></para>
         <para>Example: JabberSend(asterisk,bob@domain.com,Hello world) sends "Hello world"
         to <replaceable>bob@domain.com</replaceable> as an XMPP message from the account
         <replaceable>asterisk</replaceable>, configured in jabber.conf.</para>
      </description>
      <see-also>
         <ref type="function">JABBER_STATUS</ref>
         <ref type="function">JABBER_RECEIVE</ref>
      </see-also>
   </application>
   <function name="JABBER_RECEIVE" language="en_US">
      <synopsis>
         Reads XMPP messages.
      </synopsis>
      <syntax>
         <parameter name="account" required="true">
            <para>The local named account to listen on (specified in
            jabber.conf)</para>
         </parameter>
         <parameter name="jid" required="true">
            <para>Jabber ID of the buddy to receive message from. It can be a
            bare JID (username@domain) or a full JID (username@domain/resource).</para>
         </parameter>
         <parameter name="timeout">
            <para>In seconds, defaults to <literal>20</literal>.</para>
         </parameter>
      </syntax>
      <description>
         <para>Receives a text message on the given <replaceable>account</replaceable>
         from the buddy identified by <replaceable>jid</replaceable> and returns the contents.</para>
         <para>Example: ${JABBER_RECEIVE(asterisk,bob@domain.com)} returns an XMPP message
         sent from <replaceable>bob@domain.com</replaceable> (or nothing in case of a time out), to
         the <replaceable>asterisk</replaceable> XMPP account configured in jabber.conf.</para>
      </description>
      <see-also>
         <ref type="function">JABBER_STATUS</ref>
         <ref type="application">JabberSend</ref>
      </see-also>
   </function>
   <function name="JABBER_STATUS" language="en_US">
      <synopsis>
         Retrieves a buddy's status.
      </synopsis>
      <syntax>
         <parameter name="account" required="true">
            <para>The local named account to listen on (specified in
            jabber.conf)</para>
         </parameter>
         <parameter name="jid" required="true">
            <para>Jabber ID of the buddy to receive message from. It can be a
            bare JID (username@domain) or a full JID (username@domain/resource).</para>
         </parameter>
      </syntax>
      <description>
         <para>Retrieves the numeric status associated with the buddy identified
         by <replaceable>jid</replaceable>.
         If the buddy does not exist in the buddylist, returns 7.</para>
         <para>Status will be 1-7.</para>
         <para>1=Online, 2=Chatty, 3=Away, 4=XAway, 5=DND, 6=Offline</para>
         <para>If not in roster variable will be set to 7.</para>
         <para>Example: ${JABBER_STATUS(asterisk,bob@domain.com)} returns 1 if
         <replaceable>bob@domain.com</replaceable> is online. <replaceable>asterisk</replaceable> is
         the associated XMPP account configured in jabber.conf.</para>
      </description>
      <see-also>
         <ref type="function">JABBER_RECEIVE</ref>
         <ref type="application">JabberSend</ref>
      </see-also>
   </function>
   <application name="JabberSendGroup" language="en_US">
      <synopsis>
         Send a Jabber Message to a specified chat room
      </synopsis>
      <syntax>
         <parameter name="Jabber" required="true">
            <para>Client or transport Asterisk uses to connect to Jabber.</para>
         </parameter>
         <parameter name="RoomJID" required="true">
            <para>XMPP/Jabber JID (Name) of chat room.</para>
         </parameter>
         <parameter name="Message" required="true">
            <para>Message to be sent to the chat room.</para>
         </parameter>
         <parameter name="Nickname" required="false">
            <para>The nickname Asterisk uses in the chat room.</para>
         </parameter>
      </syntax>
      <description>
         <para>Allows user to send a message to a chat room via XMPP.</para>
         <note><para>To be able to send messages to a chat room, a user must have previously joined it. Use the <replaceable>JabberJoin</replaceable> function to do so.</para></note>
      </description>
   </application>
   <application name="JabberJoin" language="en_US">
      <synopsis>
         Join a chat room
      </synopsis>
      <syntax>
         <parameter name="Jabber" required="true">
            <para>Client or transport Asterisk uses to connect to Jabber.</para>
         </parameter>
         <parameter name="RoomJID" required="true">
            <para>XMPP/Jabber JID (Name) of chat room.</para>
         </parameter>
         <parameter name="Nickname" required="false">
            <para>The nickname Asterisk will use in the chat room.</para>
            <note><para>If a different nickname is supplied to an already joined room, the old nick will be changed to the new one.</para></note>
         </parameter>
      </syntax>
      <description>
         <para>Allows Asterisk to join a chat room.</para>
      </description>
   </application>
   <application name="JabberLeave" language="en_US">
      <synopsis>
         Leave a chat room
      </synopsis>
      <syntax>
         <parameter name="Jabber" required="true">
            <para>Client or transport Asterisk uses to connect to Jabber.</para>
         </parameter>
         <parameter name="RoomJID" required="true">
            <para>XMPP/Jabber JID (Name) of chat room.</para>
         </parameter>
         <parameter name="Nickname" required="false">
            <para>The nickname Asterisk uses in the chat room.</para>
         </parameter>
      </syntax>
      <description>
         <para>Allows Asterisk to leave a chat room.</para>
      </description>
   </application>
   <application name="JabberStatus" language="en_US">
      <synopsis>
         Retrieve the status of a jabber list member
      </synopsis>
      <syntax>
         <parameter name="Jabber" required="true">
            <para>Client or transport Asterisk users to connect to Jabber.</para>
         </parameter>
         <parameter name="JID" required="true">
            <para>XMPP/Jabber JID (Name) of recipient.</para>
         </parameter>
         <parameter name="Variable" required="true">
            <para>Variable to store the status of requested user.</para>
         </parameter>
      </syntax>
      <description>
         <para>This application is deprecated. Please use the JABBER_STATUS() function instead.</para>
         <para>Retrieves the numeric status associated with the specified buddy <replaceable>JID</replaceable>.
         The return value in the <replaceable>Variable</replaceable>will be one of the following.</para>
         <enumlist>
            <enum name="1">
               <para>Online.</para>
            </enum>
            <enum name="2">
               <para>Chatty.</para>
            </enum>
            <enum name="3">
               <para>Away.</para>
            </enum>
            <enum name="4">
               <para>Extended Away.</para>
            </enum>
            <enum name="5">
               <para>Do Not Disturb.</para>
            </enum>
            <enum name="6">
               <para>Offline.</para>
            </enum>
            <enum name="7">
               <para>Not In Roster.</para>
            </enum>
         </enumlist>
      </description>
        </application>
   <manager name="JabberSend" language="en_US">
      <synopsis>
         Sends a message to a Jabber Client.
      </synopsis>
      <syntax>
         <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
         <parameter name="Jabber" required="true">
            <para>Client or transport Asterisk uses to connect to JABBER.</para>
         </parameter>
         <parameter name="JID" required="true">
            <para>XMPP/Jabber JID (Name) of recipient.</para>
         </parameter>
         <parameter name="Message" required="true">
            <para>Message to be sent to the buddy.</para>
         </parameter>
      </syntax>
      <description>
         <para>Sends a message to a Jabber Client.</para>
      </description>
   </manager>
 ***/

/*!\todo This should really be renamed to xmpp.conf. For backwards compatibility, we
 * need to read both files */
#define JABBER_CONFIG "jabber.conf"

/*-- Forward declarations */
static void aji_message_destroy(struct aji_message *obj);
static void aji_buddy_destroy(struct aji_buddy *obj);
static void aji_client_destroy(struct aji_client *obj);
static int aji_is_secure(struct aji_client *client);
#ifdef HAVE_OPENSSL
static int aji_start_tls(struct aji_client *client);
static int aji_tls_handshake(struct aji_client *client);
#endif
static int aji_io_recv(struct aji_client *client, char *buffer, size_t buf_len, int timeout);
static int aji_recv(struct aji_client *client, int timeout);
static int aji_send_header(struct aji_client *client, const char *to);
static int aji_send_raw(struct aji_client *client, const char *xmlstr);
static void aji_log_hook(void *data, const char *xmpp, size_t size, int is_incoming);
static int aji_start_sasl(struct aji_client *client, enum ikssasltype type, char *username, char *pass);
static int aji_act_hook(void *data, int type, iks *node);
static void aji_handle_iq(struct aji_client *client, iks *node);
static void aji_handle_message(struct aji_client *client, ikspak *pak);
static void aji_handle_presence(struct aji_client *client, ikspak *pak);
static void aji_handle_subscribe(struct aji_client *client, ikspak *pak);
static int aji_send_raw_chat(struct aji_client *client, int groupchat, const char *nick, const char *address, const char *message);
static void *aji_recv_loop(void *data);
static int aji_initialize(struct aji_client *client);
static int aji_client_connect(void *data, ikspak *pak);
static void aji_set_presence(struct aji_client *client, char *to, char *from, int level, char *desc);
static int aji_set_group_presence(struct aji_client *client, char *room, int level, char *nick, char *desc);
static char *aji_do_set_debug(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
static char *aji_do_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
static char *aji_show_clients(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
static char *aji_show_buddies(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
static char *aji_test(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a);
static int aji_create_client(char *label, struct ast_variable *var, int debug);
static int aji_create_buddy(char *label, struct aji_client *client);
static int aji_reload(int reload);
static int aji_load_config(int reload);
static void aji_pruneregister(struct aji_client *client);
static int aji_filter_roster(void *data, ikspak *pak);
static int aji_get_roster(struct aji_client *client);
static int aji_client_info_handler(void *data, ikspak *pak);
static int aji_dinfo_handler(void *data, ikspak *pak);
static int aji_ditems_handler(void *data, ikspak *pak);
static int aji_register_query_handler(void *data, ikspak *pak);
static int aji_register_approve_handler(void *data, ikspak *pak);
static int aji_reconnect(struct aji_client *client);
static char *aji_cli_create_collection(struct ast_cli_entry *e, int cmd,
   struct ast_cli_args *a);
static char *aji_cli_list_pubsub_nodes(struct ast_cli_entry *e, int cmd,
   struct ast_cli_args *a);
static char *aji_cli_delete_pubsub_node(struct ast_cli_entry *e, int cmd, struct
   ast_cli_args *a);
static char *aji_cli_purge_pubsub_nodes(struct ast_cli_entry *e, int cmd, struct
      ast_cli_args *a);
static iks *jabber_make_auth(iksid * id, const char *pass, const char *sid);
static int aji_receive_node_list(void *data, ikspak* pak);
static void aji_init_event_distribution(struct aji_client *client);
static iks* aji_create_pubsub_node(struct aji_client *client, const char *node_type,
   const char *name, const char *collection_name);
static iks* aji_build_node_config(iks *pubsub, const char *node_type,
   const char *collection_name);
static void aji_create_pubsub_collection(struct aji_client *client,
   const char *collection_name);
static void aji_create_pubsub_leaf(struct aji_client *client, const char *collection_name,
   const char *leaf_name);
static char *aji_cli_create_leafnode(struct ast_cli_entry *e, int cmd,
   struct ast_cli_args *a);
static void aji_create_affiliations(struct aji_client *client, const char *node);
static iks* aji_pubsub_iq_create(struct aji_client *client, const char *type);
static void aji_publish_device_state(struct aji_client *client, const char * device,
   const char *device_state);
static int aji_handle_pubsub_error(void *data, ikspak *pak);
static int aji_handle_pubsub_event(void *data, ikspak *pak);
static void aji_pubsub_subscribe(struct aji_client *client, const char *node);
static void aji_delete_pubsub_node(struct aji_client *client, const char *node_name);
static iks* aji_build_node_request(struct aji_client *client, const char *collection);
static int aji_delete_node_list(void *data, ikspak* pak);
static void aji_pubsub_purge_nodes(struct aji_client *client,
   const char* collection_name);
static void aji_publish_mwi(struct aji_client *client, const char *mailbox,
   const char *context, const char *oldmsgs, const char *newmsgs);
static void aji_devstate_cb(const struct ast_event *ast_event, void *data);
static void aji_mwi_cb(const struct ast_event *ast_event, void *data);
static iks* aji_build_publish_skeleton(struct aji_client *client, const char *node,
   const char *event_type);
/* No transports in this version */
/*
static int aji_create_transport(char *label, struct aji_client *client);
static int aji_register_transport(void *data, ikspak *pak);
static int aji_register_transport2(void *data, ikspak *pak);
*/

static struct ast_cli_entry aji_cli[] = {
   AST_CLI_DEFINE(aji_do_set_debug, "Enable/Disable Jabber debug"),
   AST_CLI_DEFINE(aji_do_reload, "Reload Jabber configuration"),
   AST_CLI_DEFINE(aji_show_clients, "Show state of clients and components"),
   AST_CLI_DEFINE(aji_show_buddies, "Show buddy lists of our clients"),
   AST_CLI_DEFINE(aji_test, "Shows roster, but is generally used for mog's debugging."),
   AST_CLI_DEFINE(aji_cli_create_collection, "Creates a PubSub node collection."),
   AST_CLI_DEFINE(aji_cli_list_pubsub_nodes, "Lists PubSub nodes"),
   AST_CLI_DEFINE(aji_cli_create_leafnode, "Creates a PubSub leaf node"),
   AST_CLI_DEFINE(aji_cli_delete_pubsub_node, "Deletes a PubSub node"),
   AST_CLI_DEFINE(aji_cli_purge_pubsub_nodes, "Purges PubSub nodes"),
};

static char *app_ajisend = "JabberSend";
static char *app_ajisendgroup = "JabberSendGroup";
static char *app_ajistatus = "JabberStatus";
static char *app_ajijoin = "JabberJoin";
static char *app_ajileave = "JabberLeave";

static struct aji_client_container clients;
static struct aji_capabilities *capabilities = NULL;
static struct ast_event_sub *mwi_sub = NULL;
static struct ast_event_sub *device_state_sub = NULL;
static ast_cond_t message_received_condition;
static ast_mutex_t messagelock;

/*! \brief Global flags, initialized to default values */
static struct ast_flags globalflags = { AJI_AUTOREGISTER | AJI_AUTOACCEPT };

/*! \brief PubSub flags, initialized to default values */
static struct ast_flags pubsubflags = { 0 };
/*!
 * \internal
 * \brief Deletes the aji_client data structure.
 * \param obj aji_client The structure we will delete.
 * \return void.
 */
static void aji_client_destroy(struct aji_client *obj)
{
   struct aji_message *tmp;
   ASTOBJ_CONTAINER_DESTROYALL(&obj->buddies, aji_buddy_destroy);
   ASTOBJ_CONTAINER_DESTROY(&obj->buddies);
   iks_filter_delete(obj->f);
   iks_parser_delete(obj->p);
   iks_stack_delete(obj->stack);
   AST_LIST_LOCK(&obj->messages);
   while ((tmp = AST_LIST_REMOVE_HEAD(&obj->messages, list))) {
      aji_message_destroy(tmp);
   }
   AST_LIST_HEAD_DESTROY(&obj->messages);
   ast_free(obj);
}

/*!
 * \internal
 * \brief Deletes the aji_buddy data structure.
 * \param obj aji_buddy The structure we will delete.
 * \return void.
 */
static void aji_buddy_destroy(struct aji_buddy *obj)
{
   struct aji_resource *tmp;

   while ((tmp = obj->resources)) {
      obj->resources = obj->resources->next;
      ast_free(tmp->description);
      ast_free(tmp);
   }

   ast_free(obj);
}

/*!
 * \internal
 * \brief Deletes the aji_message data structure.
 * \param obj aji_message The structure we will delete.
 * \return void.
 */
static void aji_message_destroy(struct aji_message *obj)
{
   if (obj->from) {
      ast_free(obj->from);
   }
   if (obj->message) {
      ast_free(obj->message);
   }
   ast_free(obj);
}

/*!
 * \internal
 * \brief Find version in XML stream and populate our capabilities list
 * \param node the node attribute in the caps element we'll look for or add to
 * our list
 * \param version the version attribute in the caps element we'll look for or
 * add to our list
 * \param pak struct The XML stanza we're processing
 * \return a pointer to the added or found aji_version structure
 */
static struct aji_version *aji_find_version(char *node, char *version, ikspak *pak)
{
   struct aji_capabilities *list = NULL;
   struct aji_version *res = NULL;

   list = capabilities;

   if (!node) {
      node = pak->from->full;
   }
   if (!version) {
      version = "none supplied.";
   }
   while (list) {
      if (!strcasecmp(list->node, node)) {
         res = list->versions;
         while(res) {
            if (!strcasecmp(res->version, version)) {
               return res;
            }
            res = res->next;
         }
         /* Specified version not found. Let's add it to
            this node in our capabilities list */
         if (!res) {
            res = ast_malloc(sizeof(*res));
            if (!res) {
               ast_log(LOG_ERROR, "Out of memory!\n");
               return NULL;
            }
            res->jingle = 0;
            res->parent = list;
            ast_copy_string(res->version, version, sizeof(res->version));
            res->next = list->versions;
            list->versions = res;
            return res;
         }
      }
      list = list->next;
   }
   /* Specified node not found. Let's add it our capabilities list */
   if (!list) {
      list = ast_malloc(sizeof(*list));
      if (!list) {
         ast_log(LOG_ERROR, "Out of memory!\n");
         return NULL;
      }
      res = ast_malloc(sizeof(*res));
      if (!res) {
         ast_log(LOG_ERROR, "Out of memory!\n");
         ast_free(list);
         return NULL;
      }
      ast_copy_string(list->node, node, sizeof(list->node));
      ast_copy_string(res->version, version, sizeof(res->version));
      res->jingle = 0;
      res->parent = list;
      res->next = NULL;
      list->versions = res;
      list->next = capabilities;
      capabilities = list;
   }
   return res;
}

/*!
 * \internal
 * \brief Find the aji_resource we want
 * \param buddy aji_buddy A buddy
 * \param name
 * \return aji_resource object
*/
static struct aji_resource *aji_find_resource(struct aji_buddy *buddy, char *name)
{
   struct aji_resource *res = NULL;
   if (!buddy || !name) {
      return res;
   }
   res = buddy->resources;
   while (res) {
      if (!strcasecmp(res->resource, name)) {
         break;
      }
      res = res->next;
   }
   return res;
}

/*!
 * \internal
 * \brief Jabber GTalk function
 * \param node iks
 * \return 1 on success, 0 on failure.
*/
static int gtalk_yuck(iks *node)
{
   if (iks_find_with_attrib(node, "c", "node", "http://www.google.com/xmpp/client/caps")) {
      ast_debug(1, "Found resource with Googletalk voice capabilities\n");
      return 1;
   } else if (iks_find_with_attrib(node, "caps:c", "ext", "pmuc-v1 sms-v1 camera-v1 video-v1 voice-v1")) {
      ast_debug(1, "Found resource with Gmail voice/video chat capabilities\n");
      return 1;
   } else if (iks_find_with_attrib(node, "caps:c", "ext", "pmuc-v1 sms-v1 video-v1 voice-v1")) {
      ast_debug(1, "Found resource with Gmail voice/video chat capabilities (no camera)\n");
      return 1;
   }

   return 0;
}

/*!
 * \internal
 * \brief Setup the authentication struct
 * \param id iksid 
 * \param pass password
 * \param sid
 * \return x iks
*/
static iks *jabber_make_auth(iksid * id, const char *pass, const char *sid)
{
   iks *x, *y;
   x = iks_new("iq");
   iks_insert_attrib(x, "type", "set");
   y = iks_insert(x, "query");
   iks_insert_attrib(y, "xmlns", IKS_NS_AUTH);
   iks_insert_cdata(iks_insert(y, "username"), id->user, 0);
   iks_insert_cdata(iks_insert(y, "resource"), id->resource, 0);
   if (sid) {
      char buf[41];
      char sidpass[100];
      snprintf(sidpass, sizeof(sidpass), "%s%s", sid, pass);
      ast_sha1_hash(buf, sidpass);
      iks_insert_cdata(iks_insert(y, "digest"), buf, 0);
   } else {
      iks_insert_cdata(iks_insert(y, "password"), pass, 0);
   }
   return x;
}

/*!
 * \internal
 * \brief Dial plan function status(). puts the status of watched user 
 * into a channel variable.
 * \param chan ast_channel
 * \param data
 * \retval 0 success
 * \retval -1 error
 */
static int aji_status_exec(struct ast_channel *chan, const char *data)
{
   struct aji_client *client = NULL;
   struct aji_buddy *buddy = NULL;
   struct aji_resource *r = NULL;
   char *s = NULL;
   int stat = 7;
   char status[2];
   static int deprecation_warning = 0;
   AST_DECLARE_APP_ARGS(args,
      AST_APP_ARG(sender);
      AST_APP_ARG(jid);
      AST_APP_ARG(variable);
   );
   AST_DECLARE_APP_ARGS(jid,
      AST_APP_ARG(screenname);
      AST_APP_ARG(resource);
   );

   if (deprecation_warning++ % 10 == 0) {
      ast_log(LOG_WARNING, "JabberStatus is deprecated.  Please use the JABBER_STATUS dialplan function in the future.\n");
   }

   if (!data) {
      ast_log(LOG_ERROR, "Usage: JabberStatus(<sender>,<jid>[/<resource>],<varname>\n");
      return 0;
   }
   s = ast_strdupa(data);
   AST_STANDARD_APP_ARGS(args, s);

   if (args.argc != 3) {
      ast_log(LOG_ERROR, "JabberStatus() requires 3 arguments.\n");
      return -1;
   }

   AST_NONSTANDARD_APP_ARGS(jid, args.jid, '/');
   if (jid.argc < 1 || jid.argc > 2) {
      ast_log(LOG_WARNING, "Wrong JID %s, exiting\n", args.jid);
      return -1;
   }

   if (!(client = ast_aji_get_client(args.sender))) {
      ast_log(LOG_WARNING, "Could not find sender connection: '%s'\n", args.sender);
      return -1;
   }
   buddy = ASTOBJ_CONTAINER_FIND(&client->buddies, jid.screenname);
   if (!buddy) {
      ast_log(LOG_WARNING, "Could not find buddy in list: '%s'\n", jid.screenname);
      return -1;
   }
   r = aji_find_resource(buddy, jid.resource);
   if (!r && buddy->resources) {
      r = buddy->resources;
   }
   if (!r) {
      ast_log(LOG_NOTICE, "Resource '%s' of buddy '%s' was not found\n", jid.resource, jid.screenname);
   } else {
      stat = r->status;
   }
   snprintf(status, sizeof(status), "%d", stat);
   pbx_builtin_setvar_helper(chan, args.variable, status);
   return 0;
}

/*!
 * \internal
 * \brief Dial plan funtcion to retrieve the status of a buddy.
 * \param channel The associated ast_channel, if there is one
 * \param data The account, buddy JID, and optional timeout
 * timeout.
 * \retval 0 success
 * \retval -1 failure
 */
static int acf_jabberstatus_read(struct ast_channel *chan, const char *name, char *data, char *buf, size_t buflen)
{
   struct aji_client *client = NULL;
   struct aji_buddy *buddy = NULL;
   struct aji_resource *r = NULL;
   int stat = 7;
   AST_DECLARE_APP_ARGS(args,
      AST_APP_ARG(sender);
      AST_APP_ARG(jid);
   );
   AST_DECLARE_APP_ARGS(jid,
      AST_APP_ARG(screenname);
      AST_APP_ARG(resource);
   );

   if (!data) {
      ast_log(LOG_ERROR, "Usage: JABBER_STATUS(<sender>,<jid>[/<resource>])\n");
      return 0;
   }
   AST_STANDARD_APP_ARGS(args, data);

   if (args.argc != 2) {
      ast_log(LOG_ERROR, "JABBER_STATUS requires 2 arguments: sender and jid.\n");
      return -1;
   }

   AST_NONSTANDARD_APP_ARGS(jid, args.jid, '/');
   if (jid.argc < 1 || jid.argc > 2) {
      ast_log(LOG_WARNING, "Wrong JID %s, exiting\n", args.jid);
      return -1;
   }

   if (!(client = ast_aji_get_client(args.sender))) {
      ast_log(LOG_WARNING, "Could not find sender connection: '%s'\n", args.sender);
      return -1;
   }
   buddy = ASTOBJ_CONTAINER_FIND(&client->buddies, jid.screenname);
   if (!buddy) {
      ast_log(LOG_WARNING, "Could not find buddy in list: '%s'\n", jid.screenname);
      return -1;
   }
   r = aji_find_resource(buddy, jid.resource);
   if (!r && buddy->resources) {
      r = buddy->resources;
   }
   if (!r) {
      ast_log(LOG_NOTICE, "Resource %s of buddy %s was not found.\n", jid.resource, jid.screenname);
   } else {
      stat = r->status;
   }
   snprintf(buf, buflen, "%d", stat);
   return 0;
}

static struct ast_custom_function jabberstatus_function = {
   .name = "JABBER_STATUS",
   .read = acf_jabberstatus_read,
};

/*!
 * \internal
 * \brief Dial plan function to receive a message.
 * \param channel The associated ast_channel, if there is one
 * \param data The account, JID, and optional timeout
 * timeout.
 * \retval 0 success
 * \retval -1 failure
 */
static int acf_jabberreceive_read(struct ast_channel *chan, const char *name, char *data, char *buf, size_t buflen)
{
   char *aux = NULL, *parse = NULL;
   int timeout;
   int jidlen, resourcelen;
   struct timeval start;
   long diff = 0;
   struct aji_client *client = NULL;
   int found = 0;
   struct aji_message *tmp = NULL;
   AST_DECLARE_APP_ARGS(args,
         AST_APP_ARG(account);
         AST_APP_ARG(jid);
         AST_APP_ARG(timeout);
         );
   AST_DECLARE_APP_ARGS(jid,
         AST_APP_ARG(screenname);
         AST_APP_ARG(resource);
   );

   if (ast_strlen_zero(data)) {
      ast_log(LOG_WARNING, "%s requires arguments (account,jid[,timeout])\n", name);
      return -1;
   }

   parse = ast_strdupa(data);
   AST_STANDARD_APP_ARGS(args, parse);

   if (args.argc < 2 || args.argc > 3) {
      ast_log(LOG_WARNING, "%s requires arguments (account,jid[,timeout])\n", name);
      return -1;
   }

   client = ast_aji_get_client(args.account);
   if (!client) {
      ast_log(LOG_WARNING, "Could not find client %s, exiting\n", args.account);
      return -1;
   }

   parse = ast_strdupa(args.jid);
   AST_NONSTANDARD_APP_ARGS(jid, parse, '/');
   if (jid.argc < 1 || jid.argc > 2 || strlen(args.jid) > AJI_MAX_JIDLEN) {
      ast_log(LOG_WARNING, "Invalid JID : %s\n", parse);
      ASTOBJ_UNREF(client, aji_client_destroy);
      return -1;
   }

   if (ast_strlen_zero(args.timeout)) {
      timeout = 20;
   } else {
      sscanf(args.timeout, "%d", &timeout);
      if (timeout <= 0) {
         ast_log(LOG_WARNING, "Invalid timeout specified: '%s'\n", args.timeout);
         ASTOBJ_UNREF(client, aji_client_destroy);
         return -1;
      }
   }

   jidlen = strlen(jid.screenname);
   resourcelen = ast_strlen_zero(jid.resource) ? 0 : strlen(jid.resource);

   ast_debug(3, "Waiting for an XMPP message from %s\n", args.jid);

   start = ast_tvnow();

   if (ast_autoservice_start(chan) < 0) {
      ast_log(LOG_WARNING, "Cannot start autoservice for channel %s\n", chan->name);
      return -1;
   }

   /* search the messages list, grab the first message that matches with
    * the from JID we're expecting, and remove it from the messages list */
   while (diff < timeout) {
      struct timespec ts = { 0, };
      struct timeval wait;
      int res;

      wait = ast_tvadd(start, ast_tv(timeout, 0));
      ts.tv_sec = wait.tv_sec;
      ts.tv_nsec = wait.tv_usec * 1000;

      /* wait up to timeout seconds for an incoming message */
      ast_mutex_lock(&messagelock);
      res = ast_cond_timedwait(&message_received_condition, &messagelock, &ts);
      ast_mutex_unlock(&messagelock);
      if (res == ETIMEDOUT) {
         ast_debug(3, "No message received from %s in %d seconds\n", args.jid, timeout);
         break;
      }

      AST_LIST_LOCK(&client->messages);
      AST_LIST_TRAVERSE_SAFE_BEGIN(&client->messages, tmp, list) {
         if (jid.argc == 1) {
            /* no resource provided, compare bare JIDs */
            if (strncasecmp(jid.screenname, tmp->from, jidlen)) {
               continue;
            }
         } else {
            /* resource appended, compare bare JIDs and resources */
            char *resource = strchr(tmp->from, '/');
            if (!resource || strlen(resource) == 0) {
               ast_log(LOG_WARNING, "Remote JID has no resource : %s\n", tmp->from);
               if (strncasecmp(jid.screenname, tmp->from, jidlen)) {
                  continue;
               }
            } else {
               resource ++;
               if (strncasecmp(jid.screenname, tmp->from, jidlen) || strncmp(jid.resource, resource, resourcelen)) {
                  continue;
               }
            }
         }
         /* check if the message is not too old */
         if (ast_tvdiff_sec(ast_tvnow(), tmp->arrived) >= client->message_timeout) {
            ast_debug(3, "Found old message from %s, deleting it\n", tmp->from);
            AST_LIST_REMOVE_CURRENT(list);
            aji_message_destroy(tmp);
            continue;
         }
         found = 1;
         aux = ast_strdupa(tmp->message);
         AST_LIST_REMOVE_CURRENT(list);
         aji_message_destroy(tmp);
         break;
      }
      AST_LIST_TRAVERSE_SAFE_END;
      AST_LIST_UNLOCK(&client->messages);
      if (found) {
         break;
      }

      /* check timeout */
      diff = ast_tvdiff_ms(ast_tvnow(), start);
   }

   ASTOBJ_UNREF(client, aji_client_destroy);
   if (ast_autoservice_stop(chan) < 0) {
      ast_log(LOG_WARNING, "Cannot stop autoservice for channel %s\n", chan->name);
   }

   /* return if we timed out */
   if (!found) {
      ast_log(LOG_NOTICE, "Timed out : no message received from %s\n", args.jid);
      return -1;
   }
   ast_copy_string(buf, aux, buflen);

   return 0;
}

static struct ast_custom_function jabberreceive_function = {
   .name = "JABBER_RECEIVE",
   .read = acf_jabberreceive_read,
};

/*!
 * \internal
 * \brief Delete old messages from a given JID
 * Messages stored during more than client->message_timeout are deleted
 * \param client Asterisk's XMPP client
 * \param from the JID we received messages from
 * \retval the number of deleted messages
 * \retval -1 failure
 */
static int delete_old_messages(struct aji_client *client, char *from)
{
   int deleted = 0;
   int isold = 0;
   struct aji_message *tmp = NULL;
   if (!client) {
      ast_log(LOG_ERROR, "Cannot find our XMPP client\n");
      return -1;
   }

   /* remove old messages */
   AST_LIST_LOCK(&client->messages);
   if (AST_LIST_EMPTY(&client->messages)) {
      AST_LIST_UNLOCK(&client->messages);
      return 0;
   }

   AST_LIST_TRAVERSE_SAFE_BEGIN(&client->messages, tmp, list) {
      if (isold) {
         if (!from || !strncasecmp(from, tmp->from, strlen(from))) {
            AST_LIST_REMOVE_CURRENT(list);
            aji_message_destroy(tmp);
            deleted ++;
         }
      } else if (ast_tvdiff_sec(ast_tvnow(), tmp->arrived) >= client->message_timeout) {
         isold = 1;
         if (!from || !strncasecmp(from, tmp->from, strlen(from))) {
            AST_LIST_REMOVE_CURRENT(list);
            aji_message_destroy(tmp);
            deleted ++;
         }
      }
   }
   AST_LIST_TRAVERSE_SAFE_END;
   AST_LIST_UNLOCK(&client->messages);

   return deleted;
}

/*!
 * \internal
 * \brief Delete old messages
 * Messages stored during more than client->message_timeout are deleted
 * \param client Asterisk's XMPP client
 * \retval the number of deleted messages
 * \retval -1 failure
 */
static int delete_old_messages_all(struct aji_client *client)
{
   return delete_old_messages(client, NULL);
}

/*!
* \brief Application to join a chat room
* \param chan ast_channel
* \param data  Data is sender|jid|nickname.
* \retval 0 success
* \retval -1 error
*/
static int aji_join_exec(struct ast_channel *chan, const char *data)
{
   struct aji_client *client = NULL;
   char *s;
   char nick[AJI_MAX_RESJIDLEN];

   AST_DECLARE_APP_ARGS(args,
      AST_APP_ARG(sender);
      AST_APP_ARG(jid);
      AST_APP_ARG(nick);
   );

   if (!data) {
      ast_log(LOG_ERROR, "%s requires arguments (sender,jid[,nickname])\n", app_ajijoin);
      return -1;
   }
   s = ast_strdupa(data);

   AST_STANDARD_APP_ARGS(args, s);
   if (args.argc < 2 || args.argc > 3) {
      ast_log(LOG_ERROR, "%s requires arguments (sender,jid[,nickname])\n", app_ajijoin);
      return -1;
   }

   if (!(client = ast_aji_get_client(args.sender))) {
      ast_log(LOG_ERROR, "Could not find sender connection: '%s'\n", args.sender);
      return -1;
   }

   if (strchr(args.jid, '/')) {
      ast_log(LOG_ERROR, "Invalid room name : resource must not be appended\n");
      ASTOBJ_UNREF(client, aji_client_destroy);
      return -1;
   }

   if (!ast_strlen_zero(args.nick)) {
      snprintf(nick, AJI_MAX_RESJIDLEN, "%s", args.nick);
   } else {
      if (client->component) {
         sprintf(nick, "asterisk");
      } else {
         snprintf(nick, AJI_MAX_RESJIDLEN, "%s", client->jid->user);
      }
   }

   if (!ast_strlen_zero(args.jid) && strchr(args.jid, '@')) {
      ast_aji_join_chat(client, args.jid, nick);
   } else {
      ast_log(LOG_ERROR, "Problem with specified jid of '%s'\n", args.jid);
   }

   ASTOBJ_UNREF(client, aji_client_destroy);
   return 0;
}

/*!
* \brief Application to leave a chat room
* \param chan ast_channel
* \param data  Data is sender|jid|nickname.
* \retval 0 success
* \retval -1 error
*/
static int aji_leave_exec(struct ast_channel *chan, const char *data)
{
   struct aji_client *client = NULL;
   char *s;
   char nick[AJI_MAX_RESJIDLEN];
   AST_DECLARE_APP_ARGS(args,
      AST_APP_ARG(sender);
      AST_APP_ARG(jid);
      AST_APP_ARG(nick);
   );

   if (!data) {
      ast_log(LOG_ERROR, "%s requires arguments (sender,jid[,nickname])\n", app_ajileave);
      return -1;
   }
   s = ast_strdupa(data);

   AST_STANDARD_APP_ARGS(args, s);
   if (args.argc < 2 || args.argc > 3) {
      ast_log(LOG_ERROR, "%s requires arguments (sender,jid[,nickname])\n", app_ajileave);
      return -1;
   }

   if (!(client = ast_aji_get_client(args.sender))) {
      ast_log(LOG_ERROR, "Could not find sender connection: '%s'\n", args.sender);
      return -1;
   }

   if (strchr(args.jid, '/')) {
      ast_log(LOG_ERROR, "Invalid room name, resource must not be appended\n");
      ASTOBJ_UNREF(client, aji_client_destroy);
      return -1;
   }
   if (!ast_strlen_zero(args.nick)) {
      snprintf(nick, AJI_MAX_RESJIDLEN, "%s", args.nick);
   } else {
      if (client->component) {
         sprintf(nick, "asterisk");
      } else {
         snprintf(nick, AJI_MAX_RESJIDLEN, "%s", client->jid->user);
      }
   }

   if (!ast_strlen_zero(args.jid) && strchr(args.jid, '@')) {
      ast_aji_leave_chat(client, args.jid, nick);
   }
   ASTOBJ_UNREF(client, aji_client_destroy);
   return 0;
}

/*!
 * \internal
 * \brief Dial plan function to send a message.
 * \param chan ast_channel
 * \param data  Data is account,jid,message.
 * \retval 0 success
 * \retval -1 failure
 */
static int aji_send_exec(struct ast_channel *chan, const char *data)
{
   struct aji_client *client = NULL;
   char *s;
   AST_DECLARE_APP_ARGS(args,
      AST_APP_ARG(sender);
      AST_APP_ARG(recipient);
      AST_APP_ARG(message);
   );

   if (!data) {
      ast_log(LOG_WARNING, "%s requires arguments (account,jid,message)\n", app_ajisend);
      return -1;
   }
   s = ast_strdupa(data);

   AST_STANDARD_APP_ARGS(args, s);
   if (args.argc < 3) {
      ast_log(LOG_WARNING, "%s requires arguments (account,jid,message)\n", app_ajisend);
      return -1;
   }

   if (!(client = ast_aji_get_client(args.sender))) {
      ast_log(LOG_WARNING, "Could not find sender connection: '%s'\n", args.sender);
      return -1;
   }
   if (strchr(args.recipient, '@') && !ast_strlen_zero(args.message)) {
      ast_aji_send_chat(client, args.recipient, args.message);
   }
   return 0;
}

/*!
* \brief Application to send a message to a groupchat.
* \param chan ast_channel
* \param data  Data is sender|groupchat|message.
* \retval 0 success
* \retval -1 error
*/
static int aji_sendgroup_exec(struct ast_channel *chan, const char *data)
{
   struct aji_client *client = NULL;
   char *s;
   char nick[AJI_MAX_RESJIDLEN];
   int res = 0;
   AST_DECLARE_APP_ARGS(args,
      AST_APP_ARG(sender);
      AST_APP_ARG(groupchat);
      AST_APP_ARG(message);
      AST_APP_ARG(nick);
   );

   if (!data) {
      ast_log(LOG_ERROR, "%s requires arguments (sender,groupchatid,message[,nickname])\n", app_ajisendgroup);
      return -1;
   }
   s = ast_strdupa(data);

   AST_STANDARD_APP_ARGS(args, s);
   if (args.argc < 3 || args.argc > 4) {
      ast_log(LOG_ERROR, "%s requires arguments (sender,groupchatid,message[,nickname])\n", app_ajisendgroup);
      return -1;
   }

   if (!(client = ast_aji_get_client(args.sender))) {
      ast_log(LOG_ERROR, "Could not find sender connection: '%s'\n", args.sender);
      return -1;
   }

   if (ast_strlen_zero(args.nick) || args.argc == 3) {
      if (client->component) {
         sprintf(nick, "asterisk");
      } else {
         snprintf(nick, AJI_MAX_RESJIDLEN, "%s", client->jid->user);
      }
   } else {
      snprintf(nick, AJI_MAX_RESJIDLEN, "%s", args.nick);
   }

   if (strchr(args.groupchat, '@') && !ast_strlen_zero(args.message)) {
      res = ast_aji_send_groupchat(client, nick, args.groupchat, args.message);
   }

   ASTOBJ_UNREF(client, aji_client_destroy);
   if (res != IKS_OK) {
      return -1;
   }
   return 0;
}

/*!
 * \internal
 * \brief Tests whether the connection is secured or not
 * \return 0 if the connection is not secured
 */
static int aji_is_secure(struct aji_client *client)
{
#ifdef HAVE_OPENSSL
   return client->stream_flags & SECURE;
#else
   return 0;
#endif
}

#ifdef HAVE_OPENSSL
/*!
 * \internal
 * \brief Starts the TLS procedure
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \return IKS_OK on success, an error code if sending failed, IKS_NET_TLSFAIL
 * if OpenSSL is not installed
 */
static int aji_start_tls(struct aji_client *client)
{
   int ret;

   /* This is sent not encrypted */
   if ((ret = iks_send_raw(client->p, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>"))) {
      return ret;
   }

   client->stream_flags |= TRY_SECURE;
   return IKS_OK;
}

/*!
 * \internal
 * \brief TLS handshake, OpenSSL initialization
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \return IKS_OK on success, IKS_NET_TLSFAIL on failure
 */
static int aji_tls_handshake(struct aji_client *client)
{
   int ret;
   int sock;

   ast_debug(1, "Starting TLS handshake\n");

   /* Choose an SSL/TLS protocol version, create SSL_CTX */
   client->ssl_method = SSLv3_method();
   if (!(client->ssl_context = SSL_CTX_new((SSL_METHOD *) client->ssl_method))) {
      return IKS_NET_TLSFAIL;
   }

   /* Create new SSL session */
   if (!(client->ssl_session = SSL_new(client->ssl_context))) {
      return IKS_NET_TLSFAIL;
   }

   /* Enforce TLS on our XMPP connection */
   sock = iks_fd(client->p);
   if (!(ret = SSL_set_fd(client->ssl_session, sock))) {
      return IKS_NET_TLSFAIL;
   }

   /* Perform SSL handshake */
   if (!(ret = SSL_connect(client->ssl_session))) {
      return IKS_NET_TLSFAIL;
   }

   client->stream_flags &= (~TRY_SECURE);
   client->stream_flags |= SECURE;

   /* Sent over the established TLS connection */
   if ((ret = aji_send_header(client, client->jid->server)) != IKS_OK) {
      return IKS_NET_TLSFAIL;
   }

   ast_debug(1, "TLS started with server\n");

   return IKS_OK;
}
#endif /* HAVE_OPENSSL */

/*!
 * \internal
 * \brief Secured or unsecured IO socket receiving function
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param buffer the reception buffer
 * \param buf_len the size of the buffer
 * \param timeout the select timer
 * \retval the number of read bytes
 * \retval 0 timeout expiration
 * \retval -1 error
 */
static int aji_io_recv(struct aji_client *client, char *buffer, size_t buf_len, int timeout)
{
   struct pollfd pfd = { .events = POLLIN };
   int len, res;

#ifdef HAVE_OPENSSL
   if (aji_is_secure(client)) {
      pfd.fd = SSL_get_fd(client->ssl_session);
      if (pfd.fd < 0) {
         return -1;
      }
   } else
#endif /* HAVE_OPENSSL */
      pfd.fd = iks_fd(client->p);

   res = ast_poll(&pfd, 1, timeout > 0 ? timeout * 1000 : -1);
   if (res > 0) {
#ifdef HAVE_OPENSSL
      if (aji_is_secure(client)) {
         len = SSL_read(client->ssl_session, buffer, buf_len);
      } else
#endif /* HAVE_OPENSSL */
         len = recv(pfd.fd, buffer, buf_len, 0);

      if (len > 0) {
         return len;
      } else if (len <= 0) {
         return -1;
      }
   }
   return res;
}

/*!
 * \internal
 * \brief Tries to receive data from the Jabber server
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param timeout the timeout value
 * This function receives (encrypted or unencrypted) data from the XMPP server,
 * and passes it to the parser.
 * \retval IKS_OK success
 * \retval IKS_NET_RWERR IO error
 * \retval IKS_NET_NOCONN no connection available
 * \retval IKS_NET_EXPIRED timeout expiration
 */
static int aji_recv (struct aji_client *client, int timeout)
{
   int len, ret;
   char buf[NET_IO_BUF_SIZE - 1];
   char newbuf[NET_IO_BUF_SIZE - 1];
   int pos = 0;
   int newbufpos = 0;
   unsigned char c;

   memset(buf, 0, sizeof(buf));
   memset(newbuf, 0, sizeof(newbuf));

   while (1) {
      len = aji_io_recv(client, buf, NET_IO_BUF_SIZE - 2, timeout);
      if (len < 0) return IKS_NET_RWERR;
      if (len == 0) return IKS_NET_EXPIRED;
      buf[len] = '\0';

      /* our iksemel parser won't work as expected if we feed
         it with XML packets that contain multiple whitespace
         characters between tags */
      while (pos < len) {
         c = buf[pos];
         /* if we stumble on the ending tag character,
            we skip any whitespace that follows it*/
         if (c == '>') {
            while (isspace(buf[pos+1])) {
               pos++;
            }
         }
         newbuf[newbufpos] = c;
         newbufpos ++;
         pos++;
      }
      pos = 0;
      newbufpos = 0;

      /* Log the message here, because iksemel's logHook is
         unaccessible */
      aji_log_hook(client, buf, len, 1);

      /* let iksemel deal with the string length,
         and reset our buffer */
      ret = iks_parse(client->p, newbuf, 0, 0);
      memset(newbuf, 0, sizeof(newbuf));

      switch (ret) {
      case IKS_NOMEM:
         ast_log(LOG_WARNING, "Parsing failure: Out of memory.\n");
         break;
      case IKS_BADXML:
         ast_log(LOG_WARNING, "Parsing failure: Invalid XML.\n");
         break;
      case IKS_HOOK:
         ast_log(LOG_WARNING, "Parsing failure: Hook returned an error.\n");
         break;
      }
      if (ret != IKS_OK) {
         return ret;
      }
      ast_debug(3, "XML parsing successful\n");
   }
   return IKS_OK;
}

/*!
 * \internal
 * \brief Sends XMPP header to the server
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param to the target XMPP server
 * \return IKS_OK on success, any other value on failure
 */
static int aji_send_header(struct aji_client *client, const char *to)
{
   char *msg;
   int len, err;

   len = 91 + strlen(client->name_space) + 6 + strlen(to) + 16 + 1;
   msg = iks_malloc(len);
   if (!msg)
      return IKS_NOMEM;
   sprintf(msg, "<?xml version='1.0'?>"
      "<stream:stream xmlns:stream='http://etherx.jabber.org/streams' xmlns='"
      "%s' to='%s' version='1.0'>", client->name_space, to);
   err = aji_send_raw(client, msg);
   iks_free(msg);
   if (err != IKS_OK)
      return err;

   return IKS_OK;
}

/*!
 * \brief Wraps raw sending
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param x the XMPP packet to send
 * \return IKS_OK on success, any other value on failure
 */
int ast_aji_send(struct aji_client *client, iks *x)
{
   return aji_send_raw(client, iks_string(iks_stack(x), x));
}

/*!
 * \internal
 * \brief Sends an XML string over an XMPP connection
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param xmlstr the XML string to send
 * The XML data is sent whether the connection is secured or not. In the
 * latter case, we just call iks_send_raw().
 * \return IKS_OK on success, any other value on failure
 */
static int aji_send_raw(struct aji_client *client, const char *xmlstr)
{
   int ret;
#ifdef HAVE_OPENSSL
   int len = strlen(xmlstr);

   if (aji_is_secure(client)) {
      ret = SSL_write(client->ssl_session, xmlstr, len);
      if (ret) {
         /* Log the message here, because iksemel's logHook is
            unaccessible */
         aji_log_hook(client, xmlstr, len, 0);
         return IKS_OK;
      }
   }
#endif
   /* If needed, data will be sent unencrypted, and logHook will
      be called inside iks_send_raw */
   if((client->timeout != 0 && client->state == AJI_CONNECTED) || (client->state == AJI_CONNECTING))
   {
       ret = iks_send_raw(client->p, xmlstr);
   }
   else {
      ast_log(LOG_WARNING, "JABBER: Unable to send message to %s, we are not connected", client->name);
      return -1;
   }

   if (ret != IKS_OK) {
      return ret;
   }

   return IKS_OK;
}

/*!
 * \internal
 * \brief the debug loop.
 * \param data void
 * \param xmpp xml data as string
 * \param size size of string
 * \param is_incoming direction of packet 1 for inbound 0 for outbound.
 */
static void aji_log_hook(void *data, const char *xmpp, size_t size, int is_incoming)
{
   struct aji_client *client = ASTOBJ_REF((struct aji_client *) data);

   if (!ast_strlen_zero(xmpp)) {
      manager_event(EVENT_FLAG_USER, "JabberEvent", "Account: %s\r\nPacket: %s\r\n", client->name, xmpp);
   }

   if (client->debug) {
      if (is_incoming) {
         ast_verbose("\nJABBER: %s INCOMING: %s\n", client->name, xmpp);
      } else {
         if (strlen(xmpp) == 1) {
            if (option_debug > 2  && xmpp[0] == ' ') {
               ast_verbose("\nJABBER: Keep alive packet\n");
            }
         } else {
            ast_verbose("\nJABBER: %s OUTGOING: %s\n", client->name, xmpp);
         }
      }

   }
   ASTOBJ_UNREF(client, aji_client_destroy);
}

/*!
 * \internal
 * \brief A wrapper function for iks_start_sasl
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param type the SASL authentication type. Supported types are PLAIN and MD5
 * \param username
 * \param pass password.
 *
 * \return IKS_OK on success, IKSNET_NOTSUPP on failure.
 */
static int aji_start_sasl(struct aji_client *client, enum ikssasltype type, char *username, char *pass)
{
   iks *x = NULL;
   int len;
   char *s;
   char *base64;

   /* trigger SASL DIGEST-MD5 only over an unsecured connection.
      iks_start_sasl is an iksemel API function and relies on GnuTLS,
      whereas we use OpenSSL */
   if ((type & IKS_STREAM_SASL_MD5) && !aji_is_secure(client))
      return iks_start_sasl(client->p, IKS_SASL_DIGEST_MD5, username, pass); 
   if (!(type & IKS_STREAM_SASL_PLAIN)) {
      ast_log(LOG_ERROR, "Server does not support SASL PLAIN authentication\n");
      return IKS_NET_NOTSUPP;
   }

   x = iks_new("auth"); 
   if (!x) {
      ast_log(LOG_ERROR, "Out of memory.\n");
      return IKS_NET_NOTSUPP;
   }

   iks_insert_attrib(x, "xmlns", IKS_NS_XMPP_SASL);
   len = strlen(username) + strlen(pass) + 3;
   s = alloca(len);
   base64 = alloca((len + 2) * 4 / 3);
   iks_insert_attrib(x, "mechanism", "PLAIN");
   snprintf(s, len, "%c%s%c%s", 0, username, 0, pass);

   /* exclude the NULL training byte from the base64 encoding operation
      as some XMPP servers will refuse it.
      The format for authentication is [authzid]\0authcid\0password
      not [authzid]\0authcid\0password\0 */
   ast_base64encode(base64, (const unsigned char *) s, len - 1, (len + 2) * 4 / 3);
   iks_insert_cdata(x, base64, 0);
   ast_aji_send(client, x);
   iks_delete(x);

   return IKS_OK;
}

/*!
 * \internal
 * \brief The action hook parses the inbound packets, constantly running.
 * \param data aji client structure 
 * \param type type of packet 
 * \param node the actual packet.
 * \return IKS_OK or IKS_HOOK .
 */
static int aji_act_hook(void *data, int type, iks *node)
{
   struct aji_client *client = ASTOBJ_REF((struct aji_client *) data);
   ikspak *pak = NULL;
   iks *auth = NULL;
   int features = 0;

   if (!node) {
      ast_log(LOG_ERROR, "aji_act_hook was called with out a packet\n"); /* most likely cause type is IKS_NODE_ERROR lost connection */
      ASTOBJ_UNREF(client, aji_client_destroy);
      return IKS_HOOK;
   }

   if (client->state == AJI_DISCONNECTING) {
      ASTOBJ_UNREF(client, aji_client_destroy);
      return IKS_HOOK;
   }

   pak = iks_packet(node);

   /* work around iksemel's impossibility to recognize node names
    * containing a semicolon. Set the namespace of the corresponding
    * node accordingly. */
   if (iks_has_children(node) && strchr(iks_name(iks_child(node)), ':')) {
      char *node_ns = NULL;
      char attr[AJI_MAX_ATTRLEN];
      char *node_name = iks_name(iks_child(node));
      char *aux = strchr(node_name, ':') + 1;
      snprintf(attr, strlen("xmlns:") + (strlen(node_name) - strlen(aux)), "xmlns:%s", node_name);
      node_ns = iks_find_attrib(iks_child(node), attr);
      if (node_ns) {
         pak->ns = node_ns;
         pak->query = iks_child(node);
      }
   }


   if (!client->component) { /*client */
      switch (type) {
      case IKS_NODE_START:
         if (client->usetls && !aji_is_secure(client)) {
#ifndef HAVE_OPENSSL
            ast_log(LOG_ERROR, "TLS connection cannot be established. Please install OpenSSL and its development libraries on this system, or disable the TLS option in your configuration file\n");
            ASTOBJ_UNREF(client, aji_client_destroy);
            return IKS_HOOK;
#else
            if (aji_start_tls(client) == IKS_NET_TLSFAIL) {
               ast_log(LOG_ERROR, "Could not start TLS\n");
               ASTOBJ_UNREF(client, aji_client_destroy);
               return IKS_HOOK;     
            }
#endif
            break;
         }
         if (!client->usesasl) {
            iks_filter_add_rule(client->f, aji_client_connect, client, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_SUBTYPE, IKS_TYPE_RESULT, IKS_RULE_ID, client->mid, IKS_RULE_DONE);
            auth = jabber_make_auth(client->jid, client->password, iks_find_attrib(node, "id"));
            if (auth) {
               iks_insert_attrib(auth, "id", client->mid);
               iks_insert_attrib(auth, "to", client->jid->server);
               ast_aji_increment_mid(client->mid);
               ast_aji_send(client, auth);
               iks_delete(auth);
            } else {
               ast_log(LOG_ERROR, "Out of memory.\n");
            }
         }
         break;

      case IKS_NODE_NORMAL:
#ifdef HAVE_OPENSSL
         if (client->stream_flags & TRY_SECURE) {
            if (!strcmp("proceed", iks_name(node))) {
               return aji_tls_handshake(client);
            }
         }
#endif
         if (!strcmp("stream:features", iks_name(node))) {
            features = iks_stream_features(node);
            if (client->usesasl) {
               if (client->usetls && !aji_is_secure(client)) {
                  break;
               }
               if (client->authorized) {
                  if (features & IKS_STREAM_BIND) {
                     iks_filter_add_rule(client->f, aji_client_connect, client, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_SUBTYPE, IKS_TYPE_RESULT, IKS_RULE_DONE);
                     auth = iks_make_resource_bind(client->jid);
                     if (auth) {
                        iks_insert_attrib(auth, "id", client->mid);
                        ast_aji_increment_mid(client->mid);
                        ast_aji_send(client, auth);
                        iks_delete(auth);
                     } else {
                        ast_log(LOG_ERROR, "Out of memory.\n");
                        break;
                     }
                  }
                  if (features & IKS_STREAM_SESSION) {
                     iks_filter_add_rule (client->f, aji_client_connect, client, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_SUBTYPE, IKS_TYPE_RESULT, IKS_RULE_ID, "auth", IKS_RULE_DONE);
                     auth = iks_make_session();
                     if (auth) {
                        iks_insert_attrib(auth, "id", "auth");
                        ast_aji_increment_mid(client->mid);
                        ast_aji_send(client, auth);
                        iks_delete(auth);
                     } else {
                        ast_log(LOG_ERROR, "Out of memory.\n");
                     }
                  }
               } else {
                  int ret;
                  if (!client->jid->user) {
                     ast_log(LOG_ERROR, "Malformed Jabber ID : %s (domain missing?)\n", client->jid->full);
                     break;
                  }

                  ret = aji_start_sasl(client, features, client->jid->user, client->password);
                  if (ret != IKS_OK) {
                     ASTOBJ_UNREF(client, aji_client_destroy);
                     return IKS_HOOK;
                  }
                  break;
               }
            }
         } else if (!strcmp("failure", iks_name(node))) {
            ast_log(LOG_ERROR, "JABBER: encryption failure. possible bad password.\n");
         } else if (!strcmp("success", iks_name(node))) {
            client->authorized = 1;
            aji_send_header(client, client->jid->server);
         }
         break;
      case IKS_NODE_ERROR:
         ast_log(LOG_ERROR, "JABBER: Node Error\n");
         ASTOBJ_UNREF(client, aji_client_destroy);
         return IKS_HOOK;
         break;
      case IKS_NODE_STOP:
         ast_log(LOG_WARNING, "JABBER: Disconnected\n");
         ASTOBJ_UNREF(client, aji_client_destroy);
         return IKS_HOOK;
         break;
      }
   } else if (client->state != AJI_CONNECTED && client->component) {
      switch (type) {
      case IKS_NODE_START:
         if (client->state == AJI_DISCONNECTED) {
            char secret[160], shasum[320], *handshake;

            sprintf(secret, "%s%s", pak->id, client->password);
            ast_sha1_hash(shasum, secret);
            handshake = NULL;
            if (asprintf(&handshake, "<handshake>%s</handshake>", shasum) >= 0) {
               aji_send_raw(client, handshake);
               ast_free(handshake);
               handshake = NULL;
            }
            client->state = AJI_CONNECTING;
            if (aji_recv(client, 1) == 2) /*XXX proper result for iksemel library on iks_recv of <handshake/> XXX*/
               client->state = AJI_CONNECTED;
            else
               ast_log(LOG_WARNING, "Jabber didn't seem to handshake, failed to authenticate.\n");
            break;
         }
         break;

      case IKS_NODE_NORMAL:
         break;

      case IKS_NODE_ERROR:
         ast_log(LOG_ERROR, "JABBER: Node Error\n");
         ASTOBJ_UNREF(client, aji_client_destroy);
         return IKS_HOOK;

      case IKS_NODE_STOP:
         ast_log(LOG_WARNING, "JABBER: Disconnected\n");
         ASTOBJ_UNREF(client, aji_client_destroy);
         return IKS_HOOK;
      }
   }

   switch (pak->type) {
   case IKS_PAK_NONE:
      ast_debug(1, "JABBER: I don't know what to do with paktype NONE.\n");
      break;
   case IKS_PAK_MESSAGE:
      aji_handle_message(client, pak);
      ast_debug(1, "JABBER: Handling paktype MESSAGE.\n");
      break;
   case IKS_PAK_PRESENCE:
      aji_handle_presence(client, pak);
      ast_debug(1, "JABBER: Handling paktype PRESENCE\n");
      break;
   case IKS_PAK_S10N:
      aji_handle_subscribe(client, pak);
      ast_debug(1, "JABBER: Handling paktype S10N\n");
      break;
   case IKS_PAK_IQ:
      ast_debug(1, "JABBER: Handling paktype IQ\n");
      aji_handle_iq(client, node);
      break;
   default:
      ast_debug(1, "JABBER: I don't know anything about paktype '%d'\n", pak->type);
      break;
   }

   iks_filter_packet(client->f, pak);

   if (node)
      iks_delete(node);

   ASTOBJ_UNREF(client, aji_client_destroy);
   return IKS_OK;
}
/*!
 * \internal
 * \brief Unknown
 * \param data void
 * \param pak ikspak
 * \return IKS_FILTER_EAT.
*/
static int aji_register_approve_handler(void *data, ikspak *pak)
{
   struct aji_client *client = ASTOBJ_REF((struct aji_client *) data);
   iks *iq = NULL, *presence = NULL, *x = NULL;

   iq = iks_new("iq");
   presence = iks_new("presence");
   x = iks_new("x");
   if (client && iq && presence && x) {
      if (!iks_find(pak->query, "remove")) {
         iks_insert_attrib(iq, "from", client->jid->full);
         iks_insert_attrib(iq, "to", pak->from->full);
         iks_insert_attrib(iq, "id", pak->id);
         iks_insert_attrib(iq, "type", "result");
         ast_aji_send(client, iq);

         iks_insert_attrib(presence, "from", client->jid->full);
         iks_insert_attrib(presence, "to", pak->from->partial);
         iks_insert_attrib(presence, "id", client->mid);
         ast_aji_increment_mid(client->mid);
         iks_insert_attrib(presence, "type", "subscribe");
         iks_insert_attrib(x, "xmlns", "vcard-temp:x:update");
         iks_insert_node(presence, x);
         ast_aji_send(client, presence);
      }
   } else {
      ast_log(LOG_ERROR, "Out of memory.\n");
   }

   iks_delete(iq);
   iks_delete(presence);
   iks_delete(x);

   ASTOBJ_UNREF(client, aji_client_destroy);
   return IKS_FILTER_EAT;
}
/*!
 * \internal
 * \brief register handler for incoming querys (IQ's)
 * \param data incoming aji_client request
 * \param pak ikspak
 * \return IKS_FILTER_EAT.
*/
static int aji_register_query_handler(void *data, ikspak *pak)
{
   struct aji_client *client = ASTOBJ_REF((struct aji_client *) data);
   struct aji_buddy *buddy = NULL;
   char *node = NULL;
   iks *iq = NULL, *query = NULL;

   client = (struct aji_client *) data;

   buddy = ASTOBJ_CONTAINER_FIND(&client->buddies, pak->from->partial);
   if (!buddy) {
      iks  *error = NULL, *notacceptable = NULL;

      ast_log(LOG_ERROR, "Someone.... %s tried to register but they aren't allowed\n", pak->from->partial);
      iq = iks_new("iq");
      query = iks_new("query");
      error = iks_new("error");
      notacceptable = iks_new("not-acceptable");
      if (iq && query && error && notacceptable) {
         iks_insert_attrib(iq, "type", "error");
         iks_insert_attrib(iq, "from", client->user);
         iks_insert_attrib(iq, "to", pak->from->full);
         iks_insert_attrib(iq, "id", pak->id);
         iks_insert_attrib(query, "xmlns", "jabber:iq:register");
         iks_insert_attrib(error, "code" , "406");
         iks_insert_attrib(error, "type", "modify");
         iks_insert_attrib(notacceptable, "xmlns", "urn:ietf:params:xml:ns:xmpp-stanzas");
         iks_insert_node(iq, query);
         iks_insert_node(iq, error);
         iks_insert_node(error, notacceptable);
         ast_aji_send(client, iq);
      } else {
         ast_log(LOG_ERROR, "Out of memory.\n");
      }

      iks_delete(error);
      iks_delete(notacceptable);
   } else if (!(node = iks_find_attrib(pak->query, "node"))) {
      iks *instructions = NULL;
      char *explain = "Welcome to Asterisk - the Open Source PBX.\n";
      iq = iks_new("iq");
      query = iks_new("query");
      instructions = iks_new("instructions");
      if (iq && query && instructions && client) {
         iks_insert_attrib(iq, "from", client->user);
         iks_insert_attrib(iq, "to", pak->from->full);
         iks_insert_attrib(iq, "id", pak->id);
         iks_insert_attrib(iq, "type", "result");
         iks_insert_attrib(query, "xmlns", "jabber:iq:register");
         iks_insert_cdata(instructions, explain, 0);
         iks_insert_node(iq, query);
         iks_insert_node(query, instructions);
         ast_aji_send(client, iq);
      } else {
         ast_log(LOG_ERROR, "Out of memory.\n");
      }

      iks_delete(instructions);
   }
   iks_delete(iq);
   iks_delete(query);
   ASTOBJ_UNREF(client, aji_client_destroy);
   return IKS_FILTER_EAT;
}

/*!
 * \internal
 * \brief Handles stuff
 * \param data void
 * \param pak ikspak
 * \return IKS_FILTER_EAT.
*/
static int aji_ditems_handler(void *data, ikspak *pak)
{
   struct aji_client *client = ASTOBJ_REF((struct aji_client *) data);
   char *node = NULL;

   if (!(node = iks_find_attrib(pak->query, "node"))) {
      iks *iq = NULL, *query = NULL, *item = NULL;
      iq = iks_new("iq");
      query = iks_new("query");
      item = iks_new("item");

      if (iq && query && item) {
         iks_insert_attrib(iq, "from", client->user);
         iks_insert_attrib(iq, "to", pak->from->full);
         iks_insert_attrib(iq, "id", pak->id);
         iks_insert_attrib(iq, "type", "result");
         iks_insert_attrib(query, "xmlns", "http://jabber.org/protocol/disco#items");
         iks_insert_attrib(item, "node", "http://jabber.org/protocol/commands");
         iks_insert_attrib(item, "name", "Million Dollar Asterisk Commands");
         iks_insert_attrib(item, "jid", client->user);

         iks_insert_node(iq, query);
         iks_insert_node(query, item);
         ast_aji_send(client, iq);
      } else {
         ast_log(LOG_ERROR, "Out of memory.\n");
      }

      iks_delete(iq);
      iks_delete(query);
      iks_delete(item);

   } else if (!strcasecmp(node, "http://jabber.org/protocol/commands")) {
      iks *iq, *query, *confirm;
      iq = iks_new("iq");
      query = iks_new("query");
      confirm = iks_new("item");
      if (iq && query && confirm && client) {
         iks_insert_attrib(iq, "from", client->user);
         iks_insert_attrib(iq, "to", pak->from->full);
         iks_insert_attrib(iq, "id", pak->id);
         iks_insert_attrib(iq, "type", "result");
         iks_insert_attrib(query, "xmlns", "http://jabber.org/protocol/disco#items");
         iks_insert_attrib(query, "node", "http://jabber.org/protocol/commands");
         iks_insert_attrib(confirm, "node", "confirmaccount");
         iks_insert_attrib(confirm, "name", "Confirm AIM account");
         iks_insert_attrib(confirm, "jid", "blog.astjab.org");

         iks_insert_node(iq, query);
         iks_insert_node(query, confirm);
         ast_aji_send(client, iq);
      } else {
         ast_log(LOG_ERROR, "Out of memory.\n");
      }

      iks_delete(iq);
      iks_delete(query);
      iks_delete(confirm);

   } else if (!strcasecmp(node, "confirmaccount")) {
      iks *iq = NULL, *query = NULL, *feature = NULL;

      iq = iks_new("iq");
      query = iks_new("query");
      feature = iks_new("feature");

      if (iq && query && feature && client) {
         iks_insert_attrib(iq, "from", client->user);
         iks_insert_attrib(iq, "to", pak->from->full);
         iks_insert_attrib(iq, "id", pak->id);
         iks_insert_attrib(iq, "type", "result");
         iks_insert_attrib(query, "xmlns", "http://jabber.org/protocol/disco#items");
         iks_insert_attrib(feature, "var", "http://jabber.org/protocol/commands");
         iks_insert_node(iq, query);
         iks_insert_node(query, feature);
         ast_aji_send(client, iq);
      } else {
         ast_log(LOG_ERROR, "Out of memory.\n");
      }

      iks_delete(iq);
      iks_delete(query);
      iks_delete(feature);
   }

   ASTOBJ_UNREF(client, aji_client_destroy);
   return IKS_FILTER_EAT;

}

/*!
 * \internal
 * \brief Handle add extra info
 * \param data void
 * \param pak ikspak
 * \return IKS_FILTER_EAT
*/
static int aji_client_info_handler(void *data, ikspak *pak)
{
   struct aji_client *client = ASTOBJ_REF((struct aji_client *) data);
   struct aji_resource *resource = NULL;
   struct aji_buddy *buddy = ASTOBJ_CONTAINER_FIND(&client->buddies, pak->from->partial);

   resource = aji_find_resource(buddy, pak->from->resource);
   if (pak->subtype == IKS_TYPE_RESULT) {
      if (!resource) {
         ast_log(LOG_NOTICE, "JABBER: Received client info from %s when not requested.\n", pak->from->full);
         ASTOBJ_UNREF(client, aji_client_destroy);
         return IKS_FILTER_EAT;
      }
      if (iks_find_with_attrib(pak->query, "feature", "var", "http://www.google.com/xmpp/protocol/voice/v1")) {
         resource->cap->jingle = 1;
      } else {
         resource->cap->jingle = 0;
      }
   } else if (pak->subtype == IKS_TYPE_GET) {
      iks *iq, *disco, *ident, *google, *query;
      iq = iks_new("iq");
      query = iks_new("query");
      ident = iks_new("identity");
      disco = iks_new("feature");
      google = iks_new("feature");
      if (iq && ident && disco && google) {
         iks_insert_attrib(iq, "from", client->jid->full);
         iks_insert_attrib(iq, "to", pak->from->full);
         iks_insert_attrib(iq, "type", "result");
         iks_insert_attrib(iq, "id", pak->id);
         iks_insert_attrib(query, "xmlns", "http://jabber.org/protocol/disco#info");
         iks_insert_attrib(ident, "category", "client");
         iks_insert_attrib(ident, "type", "pc");
         iks_insert_attrib(ident, "name", "asterisk");
         iks_insert_attrib(disco, "var", "http://jabber.org/protocol/disco#info");
         iks_insert_attrib(google, "var", "http://www.google.com/xmpp/protocol/voice/v1");
         iks_insert_node(iq, query);
         iks_insert_node(query, ident);
         iks_insert_node(query, google);
         iks_insert_node(query, disco);
         ast_aji_send(client, iq);
      } else {
         ast_log(LOG_ERROR, "Out of Memory.\n");
      }

      iks_delete(iq);
      iks_delete(query);
      iks_delete(ident);
      iks_delete(google);
      iks_delete(disco);
   } else if (pak->subtype == IKS_TYPE_ERROR) {
      ast_log(LOG_NOTICE, "User %s does not support discovery.\n", pak->from->full);
   }
   ASTOBJ_UNREF(client, aji_client_destroy);
   return IKS_FILTER_EAT;
}

/*!
 * \internal
 * \brief Handler of the return info packet
 * \param data aji_client
 * \param pak ikspak
 * \return IKS_FILTER_EAT
*/
static int aji_dinfo_handler(void *data, ikspak *pak)
{
   struct aji_client *client = ASTOBJ_REF((struct aji_client *) data);
   char *node = NULL;
   struct aji_resource *resource = NULL;
   struct aji_buddy *buddy = ASTOBJ_CONTAINER_FIND(&client->buddies, pak->from->partial);

   resource = aji_find_resource(buddy, pak->from->resource);
   if (pak->subtype == IKS_TYPE_ERROR) {
      ast_log(LOG_WARNING, "Received error from a client, turn on jabber debug!\n");
      return IKS_FILTER_EAT;
   }
   if (pak->subtype == IKS_TYPE_RESULT) {
      if (!resource) {
         ast_log(LOG_NOTICE, "JABBER: Received client info from %s when not requested.\n", pak->from->full);
         ASTOBJ_UNREF(client, aji_client_destroy);
         return IKS_FILTER_EAT;
      }
      if (iks_find_with_attrib(pak->query, "feature", "var", "http://www.google.com/xmpp/protocol/voice/v1")) {
         resource->cap->jingle = 1;
      } else {
         resource->cap->jingle = 0;
      }
   } else if (pak->subtype == IKS_TYPE_GET && !(node = iks_find_attrib(pak->query, "node"))) {
      iks *iq, *query, *identity, *disco, *reg, *commands, *gateway, *version, *vcard, *search;

      iq = iks_new("iq");
      query = iks_new("query");
      identity = iks_new("identity");
      disco = iks_new("feature");
      reg = iks_new("feature");
      commands = iks_new("feature");
      gateway = iks_new("feature");
      version = iks_new("feature");
      vcard = iks_new("feature");
      search = iks_new("feature");
      if (iq && query && identity && disco && reg && commands && gateway && version && vcard && search && client) {
         iks_insert_attrib(iq, "from", client->user);
         iks_insert_attrib(iq, "to", pak->from->full);
         iks_insert_attrib(iq, "id", pak->id);
         iks_insert_attrib(iq, "type", "result");
         iks_insert_attrib(query, "xmlns", "http://jabber.org/protocol/disco#info");
         iks_insert_attrib(identity, "category", "gateway");
         iks_insert_attrib(identity, "type", "pstn");
         iks_insert_attrib(identity, "name", "Asterisk The Open Source PBX");
         iks_insert_attrib(disco, "var", "http://jabber.org/protocol/disco");
         iks_insert_attrib(reg, "var", "jabber:iq:register");
         iks_insert_attrib(commands, "var", "http://jabber.org/protocol/commands");
         iks_insert_attrib(gateway, "var", "jabber:iq:gateway");
         iks_insert_attrib(version, "var", "jabber:iq:version");
         iks_insert_attrib(vcard, "var", "vcard-temp");
         iks_insert_attrib(search, "var", "jabber:iq:search");

         iks_insert_node(iq, query);
         iks_insert_node(query, identity);
         iks_insert_node(query, disco);
         iks_insert_node(query, reg);
         iks_insert_node(query, commands);
         iks_insert_node(query, gateway);
         iks_insert_node(query, version);
         iks_insert_node(query, vcard);
         iks_insert_node(query, search);
         ast_aji_send(client, iq);
      } else {
         ast_log(LOG_ERROR, "Out of memory.\n");
      }

      iks_delete(iq);
      iks_delete(query);
      iks_delete(identity);
      iks_delete(disco);
      iks_delete(reg);
      iks_delete(commands);
      iks_delete(gateway);
      iks_delete(version);
      iks_delete(vcard);
      iks_delete(search);
   } else if (pak->subtype == IKS_TYPE_GET && !strcasecmp(node, "http://jabber.org/protocol/commands")) {
      iks *iq, *query, *confirm;
      iq = iks_new("iq");
      query = iks_new("query");
      confirm = iks_new("item");

      if (iq && query && confirm && client) {
         iks_insert_attrib(iq, "from", client->user);
         iks_insert_attrib(iq, "to", pak->from->full);
         iks_insert_attrib(iq, "id", pak->id);
         iks_insert_attrib(iq, "type", "result");
         iks_insert_attrib(query, "xmlns", "http://jabber.org/protocol/disco#items");
         iks_insert_attrib(query, "node", "http://jabber.org/protocol/commands");
         iks_insert_attrib(confirm, "node", "confirmaccount");
         iks_insert_attrib(confirm, "name", "Confirm AIM account");
         iks_insert_attrib(confirm, "jid", client->user);
         iks_insert_node(iq, query);
         iks_insert_node(query, confirm);
         ast_aji_send(client, iq);
      } else {
         ast_log(LOG_ERROR, "Out of memory.\n");
      }

      iks_delete(iq);
      iks_delete(query);
      iks_delete(confirm);

   } else if (pak->subtype == IKS_TYPE_GET && !strcasecmp(node, "confirmaccount")) {
      iks *iq, *query, *feature;

      iq = iks_new("iq");
      query = iks_new("query");
      feature = iks_new("feature");

      if (iq && query && feature && client) {
         iks_insert_attrib(iq, "from", client->user);
         iks_insert_attrib(iq, "to", pak->from->full);
         iks_insert_attrib(iq, "id", pak->id);
         iks_insert_attrib(iq, "type", "result");
         iks_insert_attrib(query, "xmlns", "http://jabber.org/protocol/disco#info");
         iks_insert_attrib(feature, "var", "http://jabber.org/protocol/commands");
         iks_insert_node(iq, query);
         iks_insert_node(query, feature);
         ast_aji_send(client, iq);
      } else {
         ast_log(LOG_ERROR, "Out of memory.\n");
      }

      iks_delete(iq);
      iks_delete(query);
      iks_delete(feature);
   }

   ASTOBJ_UNREF(client, aji_client_destroy);
   return IKS_FILTER_EAT;
}

/*!
 * \internal
 * \brief Handles \verbatim <iq> \endverbatim stanzas.
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param node iks
 * \return void.
 */
static void aji_handle_iq(struct aji_client *client, iks *node)
{
   /*Nothing to see here */
}

/*!
 * \internal
 * \brief Handles \verbatim <message>\endverbatim stanzas.
 * Adds the incoming message to the client's message list.
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param pak ikspak the node
 */
static void aji_handle_message(struct aji_client *client, ikspak *pak)
{
   struct aji_message *insert;
   int deleted = 0;

   ast_debug(3, "client %s received a message\n", client->name);

   if (!(insert = ast_calloc(1, sizeof(*insert)))) {
      return;
   }

   insert->arrived = ast_tvnow();

   /* wake up threads waiting for messages */
   ast_mutex_lock(&messagelock);
   ast_cond_broadcast(&message_received_condition);
   ast_mutex_unlock(&messagelock);

   if (iks_find_cdata(pak->x, "body")) {
      insert->message = ast_strdup(iks_find_cdata(pak->x, "body"));
   }
   if (pak->id) {
      ast_copy_string(insert->id, pak->id, sizeof(insert->id));
   }
   if (pak->from){
      /* insert will furtherly be added to message list */
      insert->from = ast_strdup(pak->from->full);
      if (!insert->from) {
         ast_log(LOG_ERROR, "Memory allocation failure\n");
         return;
      }
      ast_debug(3, "message comes from %s\n", insert->from);
   }

   /* remove old messages received from this JID
    * and insert received message */
   deleted = delete_old_messages(client, pak->from->partial);
   ast_debug(3, "Deleted %d messages for client %s from JID %s\n", deleted, client->name, pak->from->partial);
   AST_LIST_LOCK(&client->messages);
   AST_LIST_INSERT_HEAD(&client->messages, insert, list);
   AST_LIST_UNLOCK(&client->messages);
}

/*!
 * \internal
 * \brief handles \verbatim <presence>\endverbatim stanzas.
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param pak ikspak
 */
static void aji_handle_presence(struct aji_client *client, ikspak *pak)
{
   int status, priority;
   struct aji_buddy *buddy;
   struct aji_resource *tmp = NULL, *last = NULL, *found = NULL;
   char *ver, *node, *descrip, *type;

   if (client->state != AJI_CONNECTED)
      aji_create_buddy(pak->from->partial, client);

   buddy = ASTOBJ_CONTAINER_FIND(&client->buddies, pak->from->partial);
   if (!buddy && pak->from->partial) {
      /* allow our jid to be used to log in with another resource */
      if (!strcmp((const char *)pak->from->partial, (const char *)client->jid->partial))
         aji_create_buddy(pak->from->partial, client);
      else
         ast_log(LOG_NOTICE, "Got presence packet from %s, someone not in our roster!!!!\n", pak->from->partial);
      return;
   }
   type = iks_find_attrib(pak->x, "type");
   if (client->component && type &&!strcasecmp("probe", type)) {
      aji_set_presence(client, pak->from->full, iks_find_attrib(pak->x, "to"), client->status, client->statusmessage);
      ast_verbose("what i was looking for \n");
   }
   ASTOBJ_WRLOCK(buddy);
   status = (pak->show) ? pak->show : 6;
   priority = atoi((iks_find_cdata(pak->x, "priority")) ? iks_find_cdata(pak->x, "priority") : "0");
   tmp = buddy->resources;
   descrip = ast_strdup(iks_find_cdata(pak->x, "status"));

   while (tmp && pak->from->resource) {
      if (!strcasecmp(tmp->resource, pak->from->resource)) {
         tmp->status = status;
         if (tmp->description) {
            ast_free(tmp->description);
         }
         tmp->description = descrip;
         found = tmp;
         if (status == 6) {   /* Sign off Destroy resource */
            if (last && found->next) {
               last->next = found->next;
            } else if (!last) {
               if (found->next) {
                  buddy->resources = found->next;
               } else {
                  buddy->resources = NULL;
               }
            } else if (!found->next) {
               if (last) {
                  last->next = NULL;
               } else {
                  buddy->resources = NULL;
               }
            }
            ast_free(found);
            found = NULL;
            break;
         }
         /* resource list is sorted by descending priority */
         if (tmp->priority != priority) {
            found->priority = priority;
            if (!last && !found->next) {
               /* resource was found to be unique,
                  leave loop */
               break;
            }
            /* search for resource in our list
               and take it out for the moment */
            if (last) {
               last->next = found->next;
            } else {
               buddy->resources = found->next;
            }

            last = NULL;
            tmp = buddy->resources;
            if (!buddy->resources) {
               buddy->resources = found;
            }
            /* priority processing */
            while (tmp) {
               /* insert resource back according to
                  its priority value */
               if (found->priority > tmp->priority) {
                  if (last) {
                     /* insert within list */
                     last->next = found;
                  }
                  found->next = tmp;
                  if (!last) {
                     /* insert on top */
                     buddy->resources = found;
                  }
                  break;
               }
               if (!tmp->next) {
                  /* insert at the end of the list */
                  tmp->next = found;
                  found->next = NULL;
                  break;
               }
               last = tmp;
               tmp = tmp->next;
            }
         }
         break;
      }
      last = tmp;
      tmp = tmp->next;
   }

   /* resource not found in our list, create it */
   if (!found && status != 6 && pak->from->resource) {
      found = ast_calloc(1, sizeof(*found));

      if (!found) {
         ast_log(LOG_ERROR, "Out of memory!\n");
         return;
      }
      ast_copy_string(found->resource, pak->from->resource, sizeof(found->resource));
      found->status = status;
      found->description = descrip;
      found->priority = priority;
      found->next = NULL;
      last = NULL;
      tmp = buddy->resources;
      while (tmp) {
         if (found->priority > tmp->priority) {
            if (last) {
               last->next = found;
            }
            found->next = tmp;
            if (!last) {
               buddy->resources = found;
            }
            break;
         }
         if (!tmp->next) {
            tmp->next = found;
            break;
         }
         last = tmp;
         tmp = tmp->next;
      }
      if (!tmp) {
         buddy->resources = found;
      }
   }

   ASTOBJ_UNLOCK(buddy);
   ASTOBJ_UNREF(buddy, aji_buddy_destroy);

   node = iks_find_attrib(iks_find(pak->x, "c"), "node");
   ver = iks_find_attrib(iks_find(pak->x, "c"), "ver");

   /* handle gmail client's special caps:c tag */
   if (!node && !ver) {
      node = iks_find_attrib(iks_find(pak->x, "caps:c"), "node");
      ver = iks_find_attrib(iks_find(pak->x, "caps:c"), "ver");
   }

   /* retrieve capabilites of the new resource */
   if (status != 6 && found && !found->cap) {
      found->cap = aji_find_version(node, ver, pak);
      if (gtalk_yuck(pak->x)) { /* gtalk should do discover */
         found->cap->jingle = 1;
      }
      if (found->cap->jingle) {
         ast_debug(1, "Special case for google till they support discover.\n");
      } else {
         iks *iq, *query;
         iq = iks_new("iq");
         query = iks_new("query");
         if (query && iq) {
            iks_insert_attrib(iq, "type", "get");
            iks_insert_attrib(iq, "to", pak->from->full);
            iks_insert_attrib(iq, "from", client->jid->full);
            iks_insert_attrib(iq, "id", client->mid);
            ast_aji_increment_mid(client->mid);
            iks_insert_attrib(query, "xmlns", "http://jabber.org/protocol/disco#info");
            iks_insert_node(iq, query);
            ast_aji_send(client, iq);
         } else {
            ast_log(LOG_ERROR, "Out of memory.\n");
         }
         iks_delete(query);
         iks_delete(iq);
      }
   }
   switch (pak->subtype) {
   case IKS_TYPE_AVAILABLE:
      ast_debug(3, "JABBER: I am available ^_* %i\n", pak->subtype);
      break;
   case IKS_TYPE_UNAVAILABLE:
      ast_debug(3, "JABBER: I am unavailable ^_* %i\n", pak->subtype);
      break;
   default:
      ast_debug(3, "JABBER: Ohh sexy and the wrong type: %i\n", pak->subtype);
   }
   switch (pak->show) {
   case IKS_SHOW_UNAVAILABLE:
      ast_debug(3, "JABBER: type: %i subtype %i\n", pak->subtype, pak->show);
      break;
   case IKS_SHOW_AVAILABLE:
      ast_debug(3, "JABBER: type is available\n");
      break;
   case IKS_SHOW_CHAT:
      ast_debug(3, "JABBER: type: %i subtype %i\n", pak->subtype, pak->show);
      break;
   case IKS_SHOW_AWAY:
      ast_debug(3, "JABBER: type is away\n");
      break;
   case IKS_SHOW_XA:
      ast_debug(3, "JABBER: type: %i subtype %i\n", pak->subtype, pak->show);
      break;
   case IKS_SHOW_DND:
      ast_debug(3, "JABBER: type: %i subtype %i\n", pak->subtype, pak->show);
      break;
   default:
      ast_debug(3, "JABBER: Kinky! how did that happen %i\n", pak->show);
   }

   if (found) {
      manager_event(EVENT_FLAG_USER, "JabberStatus",
         "Account: %s\r\nJID: %s\r\nResource: %s\r\nStatus: %d\r\nPriority: %d"
         "\r\nDescription: %s\r\n",
         client->name, pak->from->partial, found->resource, found->status,
         found->priority, S_OR(found->description, ""));
   } else {
      manager_event(EVENT_FLAG_USER, "JabberStatus",
         "Account: %s\r\nJID: %s\r\nStatus: %d\r\n",
         client->name, pak->from->partial, pak->show ? pak->show : IKS_SHOW_UNAVAILABLE);
   }
}

/*!
 * \internal
 * \brief handles subscription requests.
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param pak ikspak iksemel packet.
 * \return void.
 */
static void aji_handle_subscribe(struct aji_client *client, ikspak *pak)
{
   iks *presence = NULL, *status = NULL;
   struct aji_buddy* buddy = NULL;

   switch (pak->subtype) {
   case IKS_TYPE_SUBSCRIBE:
      if (ast_test_flag(&client->flags, AJI_AUTOACCEPT)) {
         presence = iks_new("presence");
         status = iks_new("status");
         if (presence && status) {
            iks_insert_attrib(presence, "type", "subscribed");
            iks_insert_attrib(presence, "to", pak->from->full);
            iks_insert_attrib(presence, "from", client->jid->full);
            if (pak->id)
               iks_insert_attrib(presence, "id", pak->id);
            iks_insert_cdata(status, "Asterisk has approved subscription", 0);
            iks_insert_node(presence, status);
            ast_aji_send(client, presence);
         } else {
            ast_log(LOG_ERROR, "Unable to allocate nodes\n");
         }

         iks_delete(presence);
         iks_delete(status);
      }

      if (client->component)
         aji_set_presence(client, pak->from->full, iks_find_attrib(pak->x, "to"), client->status, client->statusmessage);
   case IKS_TYPE_SUBSCRIBED:
      buddy = ASTOBJ_CONTAINER_FIND(&client->buddies, pak->from->partial);
      if (!buddy && pak->from->partial) {
         aji_create_buddy(pak->from->partial, client);
      }
   default:
      if (option_verbose > 4) {
         ast_verbose(VERBOSE_PREFIX_3 "JABBER: This is a subcription of type %i\n", pak->subtype);
      }
   }
}

/*!
 * \brief sends messages.
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param address
 * \param message
 * \retval IKS_OK success
 * \retval -1 failure
 */
int ast_aji_send_chat(struct aji_client *client, const char *address, const char *message)
{
   return aji_send_raw_chat(client, 0, NULL, address, message);
}

/*!
* \brief sends message to a groupchat
* Prior to sending messages to a groupchat, one must be connected to it.
* \param client the configured XMPP client we use to connect to a XMPP server
* \param nick the nickname we use in the chatroom
* \param address the user the messages must be sent to
* \param message the message to send
* \return IKS_OK on success, any other value on failure
*/
int ast_aji_send_groupchat(struct aji_client *client, const char *nick, const char *address, const char *message) {
   return aji_send_raw_chat(client, 1, nick, address, message);
}

/*!
* \brief sends messages.
* \param client the configured XMPP client we use to connect to a XMPP server
* \param groupchat 
* \param nick the nickname we use in chatrooms
* \param address
* \param message
* \return IKS_OK on success, any other value on failure
*/
static int aji_send_raw_chat(struct aji_client *client, int groupchat, const char *nick, const char *address, const char *message)
{
   int res = 0;
   iks *message_packet = NULL;
   char from[AJI_MAX_JIDLEN];
   /* the nickname is used only in component mode */
   if (nick && client->component) {
      snprintf(from, AJI_MAX_JIDLEN, "%s@%s/%s", nick, client->jid->full, nick);
   } else {
      snprintf(from, AJI_MAX_JIDLEN, "%s", client->jid->full);
   }

   if (client->state != AJI_CONNECTED) {
      ast_log(LOG_WARNING, "JABBER: Not connected can't send\n");
      return -1;
   }

   message_packet = iks_make_msg(groupchat ? IKS_TYPE_GROUPCHAT : IKS_TYPE_CHAT, address, message);
   if (!message_packet) {
      ast_log(LOG_ERROR, "Out of memory.\n");
      return -1;
   }
   iks_insert_attrib(message_packet, "from", from);
   res = ast_aji_send(client, message_packet);
   iks_delete(message_packet);

   return res;
}

/*!
 * \brief create a chatroom.
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param room name of room
 * \param server name of server
 * \param topic topic for the room.
 * \return 0.
 */
int ast_aji_create_chat(struct aji_client *client, char *room, char *server, char *topic)
{
   int res = 0;
   iks *iq = NULL;
   iq = iks_new("iq");

   if (iq && client) {
      iks_insert_attrib(iq, "type", "get");
      iks_insert_attrib(iq, "to", server);
      iks_insert_attrib(iq, "id", client->mid);
      ast_aji_increment_mid(client->mid);
      ast_aji_send(client, iq);
   } else {
      ast_log(LOG_ERROR, "Out of memory.\n");
   }

   iks_delete(iq);

   return res;
}

/*!
 * \brief join a chatroom.
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param room room to join
 * \param nick the nickname to use in this room
 * \return IKS_OK on success, any other value on failure.
 */
int ast_aji_join_chat(struct aji_client *client, char *room, char *nick)
{
   return aji_set_group_presence(client, room, IKS_SHOW_AVAILABLE, nick, NULL);
}

/*!
 * \brief leave a chatroom.
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param room room to leave
 * \param nick the nickname used in this room
 * \return IKS_OK on success, any other value on failure.
 */
int ast_aji_leave_chat(struct aji_client *client, char *room, char *nick)
{
   return aji_set_group_presence(client, room, IKS_SHOW_UNAVAILABLE, nick, NULL);
}
/*!
 * \brief invite to a chatroom.
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param user
 * \param room
 * \param message
 * \return res.
 */
int ast_aji_invite_chat(struct aji_client *client, char *user, char *room, char *message)
{
   int res = 0;
   iks *invite, *body, *namespace;

   invite = iks_new("message");
   body = iks_new("body");
   namespace = iks_new("x");
   if (client && invite && body && namespace) {
      iks_insert_attrib(invite, "to", user);
      iks_insert_attrib(invite, "id", client->mid);
      ast_aji_increment_mid(client->mid);
      iks_insert_cdata(body, message, 0);
      iks_insert_attrib(namespace, "xmlns", "jabber:x:conference");
      iks_insert_attrib(namespace, "jid", room);
      iks_insert_node(invite, body);
      iks_insert_node(invite, namespace);
      res = ast_aji_send(client, invite);
   } else {
      ast_log(LOG_ERROR, "Out of memory.\n");
   }

   iks_delete(body);
   iks_delete(namespace);
   iks_delete(invite);

   return res;
}

/*!
 * \internal
 * \brief receive message loop.
 * \param data void
 * \return void.
 */
static void *aji_recv_loop(void *data)
{
   struct aji_client *client = ASTOBJ_REF((struct aji_client *) data);
   int res = IKS_HOOK;

   while (res != IKS_OK) {
      ast_debug(3, "JABBER: Connecting.\n");
      res = aji_reconnect(client);
      sleep(4);
   }

   do {
      if (res == IKS_NET_RWERR || client->timeout == 0) {
         while (res != IKS_OK) {
            ast_debug(3, "JABBER: reconnecting.\n");
            res = aji_reconnect(client);
            sleep(4);
         }
      }

      res = aji_recv(client, 1);

      if (client->state == AJI_DISCONNECTING) {
         ast_debug(2, "Ending our Jabber client's thread due to a disconnect\n");
         pthread_exit(NULL);
      }

      /* Decrease timeout if no data received, and delete
       * old messages globally */
      if (res == IKS_NET_EXPIRED) {
         client->timeout--;
         delete_old_messages_all(client);
      }
      if (res == IKS_HOOK) {
         ast_log(LOG_WARNING, "JABBER: Got hook event.\n");
      } else if (res == IKS_NET_TLSFAIL) {
         ast_log(LOG_ERROR, "JABBER:  Failure in TLS.\n");
      } else if (client->timeout == 0 && client->state == AJI_CONNECTED) {
         res = client->keepalive ? aji_send_raw(client, " ") : IKS_OK;
         if (res == IKS_OK) {
            client->timeout = 50;
         } else {
            ast_log(LOG_WARNING, "JABBER:  Network Timeout\n");
         }
      } else if (res == IKS_NET_RWERR) {
         ast_log(LOG_WARNING, "JABBER: socket read error\n");
      }
   } while (client);
   ASTOBJ_UNREF(client, aji_client_destroy);
   return 0;
}

/*!
 * \brief increments the mid field for messages and other events.
 * \param mid char.
 * \return void.
 */
void ast_aji_increment_mid(char *mid)
{
   int i = 0;

   for (i = strlen(mid) - 1; i >= 0; i--) {
      if (mid[i] != 'z') {
         mid[i] = mid[i] + 1;
         i = 0;
      } else
         mid[i] = 'a';
   }
}

#if 0
/*!
 * \brief attempts to register to a transport.
 * \param aji_client struct, and xml packet.
 * \return IKS_FILTER_EAT.
 */
/*allows for registering to transport , was too sketch and is out for now. */
static int aji_register_transport(void *data, ikspak *pak)
{
   struct aji_client *client = ASTOBJ_REF((struct aji_client *) data);
   int res = 0;
   struct aji_buddy *buddy = NULL;
   iks *send = iks_make_iq(IKS_TYPE_GET, "jabber:iq:register");

   if (client && send) {
      ASTOBJ_CONTAINER_TRAVERSE(&client->buddies, 1, {
         ASTOBJ_RDLOCK(iterator); 
         if (iterator->btype == AJI_TRANS) {
              buddy = iterator;
         }
         ASTOBJ_UNLOCK(iterator);
      });
      iks_filter_remove_hook(client->f, aji_register_transport);
      iks_filter_add_rule(client->f, aji_register_transport2, client, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_SUBTYPE, IKS_TYPE_RESULT, IKS_RULE_NS, IKS_NS_REGISTER, IKS_RULE_DONE);
      iks_insert_attrib(send, "to", buddy->host);
      iks_insert_attrib(send, "id", client->mid);
      ast_aji_increment_mid(client->mid);
      iks_insert_attrib(send, "from", client->user);
      res = ast_aji_send(client, send);
   } else 
      ast_log(LOG_ERROR, "Out of memory.\n");

   if (send)
      iks_delete(send);
   ASTOBJ_UNREF(client, aji_client_destroy);
   return IKS_FILTER_EAT;

}
/*!
 * \brief attempts to register to a transport step 2.
 * \param aji_client struct, and xml packet.
 * \return IKS_FILTER_EAT.
 */
/* more of the same blob of code, too wonky for now*/
static int aji_register_transport2(void *data, ikspak *pak)
{
   struct aji_client *client = ASTOBJ_REF((struct aji_client *) data);
   int res = 0;
   struct aji_buddy *buddy = NULL;

   iks *regiq = iks_new("iq");
   iks *regquery = iks_new("query");
   iks *reguser = iks_new("username");
   iks *regpass = iks_new("password");

   if (client && regquery && reguser && regpass && regiq) {
      ASTOBJ_CONTAINER_TRAVERSE(&client->buddies, 1, {
         ASTOBJ_RDLOCK(iterator);
         if (iterator->btype == AJI_TRANS)
            buddy = iterator; ASTOBJ_UNLOCK(iterator);
      });
      iks_filter_remove_hook(client->f, aji_register_transport2);
      iks_insert_attrib(regiq, "to", buddy->host);
      iks_insert_attrib(regiq, "type", "set");
      iks_insert_attrib(regiq, "id", client->mid);
      ast_aji_increment_mid(client->mid);
      iks_insert_attrib(regiq, "from", client->user);
      iks_insert_attrib(regquery, "xmlns", "jabber:iq:register");
      iks_insert_cdata(reguser, buddy->user, 0);
      iks_insert_cdata(regpass, buddy->pass, 0);
      iks_insert_node(regiq, regquery);
      iks_insert_node(regquery, reguser);
      iks_insert_node(regquery, regpass);
      res = ast_aji_send(client, regiq);
   } else
      ast_log(LOG_ERROR, "Out of memory.\n");
   if (regiq)
      iks_delete(regiq);
   if (regquery)
      iks_delete(regquery);
   if (reguser)
      iks_delete(reguser);
   if (regpass)
      iks_delete(regpass);
   ASTOBJ_UNREF(client, aji_client_destroy);
   return IKS_FILTER_EAT;
}
#endif

/*!
 * \internal
 * \brief goes through roster and prunes users not needed in list, or adds them accordingly.
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \return void.
 * \note The messages here should be configurable.
 */
static void aji_pruneregister(struct aji_client *client)
{
   iks *removeiq = iks_new("iq");
   iks *removequery = iks_new("query");
   iks *removeitem = iks_new("item");
   iks *send = iks_make_iq(IKS_TYPE_GET, "http://jabber.org/protocol/disco#items");
   if (!client || !removeiq || !removequery || !removeitem || !send) {
      ast_log(LOG_ERROR, "Out of memory.\n");
      goto safeout;
   }

   iks_insert_node(removeiq, removequery);
   iks_insert_node(removequery, removeitem);
   ASTOBJ_CONTAINER_TRAVERSE(&client->buddies, 1, {
      ASTOBJ_RDLOCK(iterator);
      /* For an aji_buddy, both AUTOPRUNE and AUTOREGISTER will never
       * be called at the same time */
      if (ast_test_flag(&iterator->flags, AJI_AUTOPRUNE)) { /* If autoprune is set on jabber.conf */
         ast_aji_send(client, iks_make_s10n(IKS_TYPE_UNSUBSCRIBE, iterator->name,
                         "GoodBye. Your status is no longer needed by Asterisk the Open Source PBX"
                         " so I am no longer subscribing to your presence.\n"));
         ast_aji_send(client, iks_make_s10n(IKS_TYPE_UNSUBSCRIBED, iterator->name,
                         "GoodBye.  You are no longer in the Asterisk config file so I am removing"
                         " your access to my presence.\n"));
         iks_insert_attrib(removeiq, "from", client->jid->full);
         iks_insert_attrib(removeiq, "type", "set");
         iks_insert_attrib(removequery, "xmlns", "jabber:iq:roster");
         iks_insert_attrib(removeitem, "jid", iterator->name);
         iks_insert_attrib(removeitem, "subscription", "remove");
         ast_aji_send(client, removeiq);
      } else if (ast_test_flag(&iterator->flags, AJI_AUTOREGISTER)) {
         ast_aji_send(client, iks_make_s10n(IKS_TYPE_SUBSCRIBE, iterator->name,
                         "Greetings! I am the Asterisk Open Source PBX and I want to subscribe to your presence\n"));
         ast_clear_flag(&iterator->flags, AJI_AUTOREGISTER);
      }
      ASTOBJ_UNLOCK(iterator);
   });

 safeout:
   iks_delete(removeiq);
   iks_delete(removequery);
   iks_delete(removeitem);
   iks_delete(send);

   ASTOBJ_CONTAINER_PRUNE_MARKED(&client->buddies, aji_buddy_destroy);
}

/*!
 * \internal
 * \brief filters the roster packet we get back from server.
 * \param data void
 * \param pak ikspak iksemel packet.
 * \return IKS_FILTER_EAT.
 */
static int aji_filter_roster(void *data, ikspak *pak)
{
   struct aji_client *client = ASTOBJ_REF((struct aji_client *) data);
   int flag = 0;
   iks *x = NULL;
   struct aji_buddy *buddy;

   client->state = AJI_CONNECTED;
   ASTOBJ_CONTAINER_TRAVERSE(&client->buddies, 1, {
      ASTOBJ_RDLOCK(iterator);
      x = iks_child(pak->query);
      flag = 0;
      while (x) {
         if (!iks_strcmp(iks_name(x), "item")) {
            if (!strcasecmp(iterator->name, iks_find_attrib(x, "jid"))) {
               flag = 1;
               ast_clear_flag(&iterator->flags, AJI_AUTOPRUNE | AJI_AUTOREGISTER);
            }
         }
         x = iks_next(x);
      }
      if (!flag) {
         ast_copy_flags(&iterator->flags, &client->flags, AJI_AUTOREGISTER);
      }
      iks_delete(x);

      ASTOBJ_UNLOCK(iterator);
   });

   x = iks_child(pak->query);
   while (x) {
      flag = 0;
      if (iks_strcmp(iks_name(x), "item") == 0) {
         ASTOBJ_CONTAINER_TRAVERSE(&client->buddies, 1, {
            ASTOBJ_RDLOCK(iterator);
            if (!strcasecmp(iterator->name, iks_find_attrib(x, "jid")))
               flag = 1;
            ASTOBJ_UNLOCK(iterator);
         });

         if (flag) {
            /* found buddy, don't create a new one */
            x = iks_next(x);
            continue;
         }

         buddy = ast_calloc(1, sizeof(*buddy));
         if (!buddy) {
            ast_log(LOG_WARNING, "Out of memory\n");
            return 0;
         }
         ASTOBJ_INIT(buddy);
         ASTOBJ_WRLOCK(buddy);
         ast_copy_string(buddy->name, iks_find_attrib(x, "jid"), sizeof(buddy->name));
         ast_clear_flag(&buddy->flags, AST_FLAGS_ALL);
         if (ast_test_flag(&client->flags, AJI_AUTOPRUNE)) {
            ast_set_flag(&buddy->flags, AJI_AUTOPRUNE);
            ASTOBJ_MARK(buddy);
         } else if (ast_test_flag(&client->flags, AJI_AUTOREGISTER)) {
            if (!iks_strcmp(iks_find_attrib(x, "subscription"), "none") || !iks_strcmp(iks_find_attrib(x, "subscription"), "from")) {
               /* subscribe to buddy's presence only
                  if we really need to */
               ast_set_flag(&buddy->flags, AJI_AUTOREGISTER);
            }
         }
         ASTOBJ_UNLOCK(buddy);
         if (buddy) {
            ASTOBJ_CONTAINER_LINK(&client->buddies, buddy);
            ASTOBJ_UNREF(buddy, aji_buddy_destroy);
         }
      }
      x = iks_next(x);
   }

   iks_delete(x);
   aji_pruneregister(client);

   ASTOBJ_UNREF(client, aji_client_destroy);
   return IKS_FILTER_EAT;
}

/*!
 * \internal
 * \brief reconnect to jabber server
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \return res.
*/
static int aji_reconnect(struct aji_client *client)
{
   int res = 0;

   if (client->state) {
      client->state = AJI_DISCONNECTED;
   }
   client->timeout = 50;
   if (client->p) {
      iks_parser_reset(client->p);
   }
   if (client->authorized) {
      client->authorized = 0;
   }

   res = aji_initialize(client);

   return res;
}

/*!
 * \internal
 * \brief Get the roster of jabber users
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \return 1.
*/
static int aji_get_roster(struct aji_client *client)
{
   iks *roster = NULL;
   roster = iks_make_iq(IKS_TYPE_GET, IKS_NS_ROSTER);

   if (roster) {
      iks_insert_attrib(roster, "id", "roster");
      aji_set_presence(client, NULL, client->jid->full, client->status, client->statusmessage);
      ast_aji_send(client, roster);
   }

   iks_delete(roster);

   return 1;
}

/*!
 * \internal
 * \brief connects as a client to jabber server.
 * \param data void
 * \param pak ikspak iksemel packet
 * \return res.
 */
static int aji_client_connect(void *data, ikspak *pak)
{
   struct aji_client *client = ASTOBJ_REF((struct aji_client *) data);
   int res = IKS_FILTER_PASS;

   if (client) {
      if (client->state == AJI_DISCONNECTED) {
         iks_filter_add_rule(client->f, aji_filter_roster, client, IKS_RULE_TYPE, IKS_PAK_IQ, IKS_RULE_SUBTYPE, IKS_TYPE_RESULT, IKS_RULE_ID, "roster", IKS_RULE_DONE);
         client->state = AJI_CONNECTING;
         client->jid = (iks_find_cdata(pak->query, "jid")) ? iks_id_new(client->stack, iks_find_cdata(pak->query, "jid")) : client->jid;
         if (!client->component) { /*client*/
            aji_get_roster(client);
         }
         if (client->distribute_events) {
            aji_init_event_distribution(client);
         }

         iks_filter_remove_hook(client->f, aji_client_connect);
         /* Once we remove the hook for this routine, we must return EAT or we will crash or corrupt memory */
         res = IKS_FILTER_EAT;
      }
   } else {
      ast_log(LOG_ERROR, "Out of memory.\n");
   }

   ASTOBJ_UNREF(client, aji_client_destroy);
   return res;
}

/*!
 * \internal
 * \brief prepares client for connect.
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \return 1.
 */
static int aji_initialize(struct aji_client *client)
{
   int connected = IKS_NET_NOCONN;

#ifdef HAVE_OPENSSL
   /* reset stream flags */
   client->stream_flags = 0;
#endif
   /* If it's a component, connect to user, otherwise, connect to server */
   connected = iks_connect_via(client->p, S_OR(client->serverhost, client->jid->server), client->port, client->component ? client->user : client->jid->server);

   if (connected == IKS_NET_NOCONN) {
      ast_log(LOG_ERROR, "JABBER ERROR: No Connection\n");
      return IKS_HOOK;
   } else if (connected == IKS_NET_NODNS) {
      ast_log(LOG_ERROR, "JABBER ERROR: No DNS %s for client to  %s\n", client->name,
         S_OR(client->serverhost, client->jid->server));
      return IKS_HOOK;
   }

   return IKS_OK;
}

/*!
 * \brief disconnect from jabber server.
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \return 1.
 */
int ast_aji_disconnect(struct aji_client *client)
{
   if (client) {
      ast_verb(4, "JABBER: Disconnecting\n");
#ifdef HAVE_OPENSSL
      if (client->stream_flags & SECURE) {
         SSL_shutdown(client->ssl_session);
         SSL_CTX_free(client->ssl_context);
         SSL_free(client->ssl_session);
      }
#endif
      iks_disconnect(client->p);
      iks_parser_delete(client->p);
      ASTOBJ_UNREF(client, aji_client_destroy);
   }

   return 1;
}

/*!
 * \brief Callback function for MWI events
 * \param ast_event
 * \param data void pointer to ast_client structure
 * \return void
 */
static void aji_mwi_cb(const struct ast_event *ast_event, void *data)
{
   const char *mailbox;
   const char *context;
   char oldmsgs[10];
   char newmsgs[10];
   struct aji_client *client;
   if (ast_eid_cmp(&ast_eid_default, ast_event_get_ie_raw(ast_event, AST_EVENT_IE_EID)))
   {
      /* If the event didn't originate from this server, don't send it back out. */
      ast_log(LOG_DEBUG, "Returning here\n");
      return;
   }

   client = ASTOBJ_REF((struct aji_client *) data);
   mailbox = ast_event_get_ie_str(ast_event, AST_EVENT_IE_MAILBOX);
   context = ast_event_get_ie_str(ast_event, AST_EVENT_IE_CONTEXT);
   snprintf(oldmsgs, sizeof(oldmsgs), "%d",
      ast_event_get_ie_uint(ast_event, AST_EVENT_IE_OLDMSGS));
   snprintf(newmsgs, sizeof(newmsgs), "%d",
      ast_event_get_ie_uint(ast_event, AST_EVENT_IE_NEWMSGS));
   aji_publish_mwi(client, mailbox, context, oldmsgs, newmsgs);

}
/*!
 * \brief Callback function for device state events
 * \param ast_event
 * \param data void pointer to ast_client structure
 * \return void
 */
static void aji_devstate_cb(const struct ast_event *ast_event, void *data)
{
   const char *device;
   const char *device_state;
   struct aji_client *client;
   if (ast_eid_cmp(&ast_eid_default, ast_event_get_ie_raw(ast_event, AST_EVENT_IE_EID)))
   {
      /* If the event didn't originate from this server, don't send it back out. */
      ast_log(LOG_DEBUG, "Returning here\n");
      return;
   }

   client = ASTOBJ_REF((struct aji_client *) data);
   device = ast_event_get_ie_str(ast_event, AST_EVENT_IE_DEVICE);
   device_state = ast_devstate_str(ast_event_get_ie_uint(ast_event, AST_EVENT_IE_STATE));
   aji_publish_device_state(client, device, device_state);
}

/*!
 * \brief Initialize collections for event distribution
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \return void
 */
static void aji_init_event_distribution(struct aji_client *client)
{
   if (!mwi_sub) {
      mwi_sub = ast_event_subscribe(AST_EVENT_MWI, aji_mwi_cb, "aji_mwi_subscription",
         client, AST_EVENT_IE_END);
   }
   if (!device_state_sub) {
      if (ast_enable_distributed_devstate()) {
         return;
      }
      device_state_sub = ast_event_subscribe(AST_EVENT_DEVICE_STATE_CHANGE,
         aji_devstate_cb, "aji_devstate_subscription", client, AST_EVENT_IE_END);
      ast_event_dump_cache(device_state_sub);
   }

   aji_pubsub_subscribe(client, "device_state");
   aji_pubsub_subscribe(client, "message_waiting");
   iks_filter_add_rule(client->f, aji_handle_pubsub_event, client, IKS_RULE_TYPE,
      IKS_PAK_MESSAGE, IKS_RULE_FROM, client->pubsub_node, IKS_RULE_DONE);
   iks_filter_add_rule(client->f, aji_handle_pubsub_error, client, IKS_RULE_TYPE,
      IKS_PAK_IQ, IKS_RULE_SUBTYPE, IKS_TYPE_ERROR, IKS_RULE_DONE);

}

/*!
 * \brief Callback for handling PubSub events
 * \param data void pointer to aji_client structure
 * \return IKS_FILTER_EAT
 */
static int aji_handle_pubsub_event(void *data, ikspak *pak)
{
   char *item_id, *device_state, *context;
   int oldmsgs, newmsgs;
   iks *item, *item_content;
   struct ast_eid pubsub_eid;
   struct ast_event *event;
   item = iks_find(iks_find(iks_find(pak->x, "event"), "items"), "item");
   if (!item) {
      ast_log(LOG_ERROR, "Could not parse incoming PubSub event\n");
      return IKS_FILTER_EAT;
   }
   item_id = iks_find_attrib(item, "id");
   item_content = iks_child(item);
   ast_str_to_eid(&pubsub_eid, iks_find_attrib(item_content, "eid"));
   if (!ast_eid_cmp(&ast_eid_default, &pubsub_eid)) {
      ast_log(LOG_DEBUG, "Returning here, eid of incoming event matches ours!\n");
      return IKS_FILTER_EAT;
   }
   if (!strcasecmp(iks_name(item_content), "state")) {
      device_state = iks_find_cdata(item, "state");
      if (!(event = ast_event_new(AST_EVENT_DEVICE_STATE_CHANGE,
         AST_EVENT_IE_DEVICE, AST_EVENT_IE_PLTYPE_STR, item_id, AST_EVENT_IE_STATE,
         AST_EVENT_IE_PLTYPE_UINT, ast_devstate_val(device_state), AST_EVENT_IE_EID,
         AST_EVENT_IE_PLTYPE_RAW, &pubsub_eid, sizeof(pubsub_eid),
         AST_EVENT_IE_END))) {
         return IKS_FILTER_EAT;
      }
   } else if (!strcasecmp(iks_name(item_content), "mailbox")) {
      context = strsep(&item_id, "@");
      sscanf(iks_find_cdata(item_content, "OLDMSGS"), "%10d", &oldmsgs);
      sscanf(iks_find_cdata(item_content, "NEWMSGS"), "%10d", &newmsgs);
      if (!(event = ast_event_new(AST_EVENT_MWI, AST_EVENT_IE_MAILBOX,
         AST_EVENT_IE_PLTYPE_STR, item_id, AST_EVENT_IE_CONTEXT,
         AST_EVENT_IE_PLTYPE_STR, context, AST_EVENT_IE_OLDMSGS,
         AST_EVENT_IE_PLTYPE_UINT, oldmsgs, AST_EVENT_IE_NEWMSGS,
         AST_EVENT_IE_PLTYPE_UINT, newmsgs, AST_EVENT_IE_EID, AST_EVENT_IE_PLTYPE_RAW,
         &pubsub_eid, sizeof(pubsub_eid), AST_EVENT_IE_END))) {
         return IKS_FILTER_EAT;
      }
   } else {
      ast_log(LOG_DEBUG, "Don't know how to handle PubSub event of type %s\n",
         iks_name(item_content));
      return IKS_FILTER_EAT;
   }
   ast_event_queue_and_cache(event);
   return IKS_FILTER_EAT;
}

/*!
 * \brief Add Owner affiliations for pubsub node
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param node the name of the node to which to add affiliations
 * \return void
 */
static void aji_create_affiliations(struct aji_client *client, const char *node)
{
   iks *modify_affiliates = aji_pubsub_iq_create(client, "set");
   iks *pubsub, *affiliations, *affiliate;
   pubsub = iks_insert(modify_affiliates, "pubsub");
   iks_insert_attrib(pubsub, "xmlns", "http://jabber.org/protocol/pubsub#owner");
   affiliations = iks_insert(pubsub, "affiliations");
   iks_insert_attrib(affiliations, "node", node);
   ASTOBJ_CONTAINER_TRAVERSE(&client->buddies, 1, {
      ASTOBJ_RDLOCK(iterator);
      affiliate = iks_insert(affiliations, "affiliation");
      iks_insert_attrib(affiliate, "jid", iterator->name);
      iks_insert_attrib(affiliate, "affiliation", "owner");
      ASTOBJ_UNLOCK(iterator);
   });
   ast_aji_send(client, modify_affiliates);
   iks_delete(modify_affiliates);
}

/*!
 * \brief Subscribe to a PubSub node
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param node the name of the node to which to subscribe
 * \return void
 */
static void aji_pubsub_subscribe(struct aji_client *client, const char *node)
{
   iks *request = aji_pubsub_iq_create(client, "set");
   iks *pubsub, *subscribe;

   pubsub = iks_insert(request, "pubsub");
   iks_insert_attrib(pubsub, "xmlns", "http://jabber.org/protocol/pubsub");
   subscribe = iks_insert(pubsub, "subscribe");
   iks_insert_attrib(subscribe, "jid", client->jid->partial);
   iks_insert_attrib(subscribe, "node", node);
   if (ast_test_flag(&globalflags, AJI_XEP0248)) {
      iks *options, *x, *sub_options, *sub_type, *sub_depth;
      options = iks_insert(pubsub, "options");
      x = iks_insert(options, "x");
      iks_insert_attrib(x, "xmlns", "jabber:x:data");
      iks_insert_attrib(x, "type", "submit");
      sub_options = iks_insert(x, "field");
      iks_insert_attrib(sub_options, "var", "FORM_TYPE");
      iks_insert_attrib(sub_options, "type", "hidden");
      iks_insert_cdata(iks_insert(sub_options, "value"),
         "http://jabber.org/protocol/pubsub#subscribe_options", 51);
      sub_type = iks_insert(x, "field");
      iks_insert_attrib(sub_type, "var", "pubsub#subscription_type");
      iks_insert_cdata(iks_insert(sub_type, "value"), "items", 5);
      sub_depth = iks_insert(x, "field");
      iks_insert_attrib(sub_type, "var", "pubsub#subscription_depth");
      iks_insert_cdata(iks_insert(sub_depth, "value"), "all", 3);
   }
   ast_aji_send(client, request);
   iks_delete(request);
}

/*!
 * \brief Build the skeleton of a publish
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param node Name of the node that will be published to
 * \param event_type
 * \return iks *
 */
static iks* aji_build_publish_skeleton(struct aji_client *client, const char *node,
   const char *event_type)
{
   iks *request = aji_pubsub_iq_create(client, "set");
   iks *pubsub, *publish, *item;
   pubsub = iks_insert(request, "pubsub");
   iks_insert_attrib(pubsub, "xmlns", "http://jabber.org/protocol/pubsub");
   publish = iks_insert(pubsub, "publish");
   if (ast_test_flag(&globalflags, AJI_XEP0248)) {
      iks_insert_attrib(publish, "node", node);
   } else {
      iks_insert_attrib(publish, "node", event_type);
   }
   item = iks_insert(publish, "item");
   iks_insert_attrib(item, "id", node);
   return item;

}

/*!
 * \brief Publish device state to a PubSub node
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param device the name of the device whose state to publish
 * \param device_state the state to publish
 * \return void
 */
static void aji_publish_device_state(struct aji_client *client, const char *device,
   const char *device_state)
{
   iks *request = aji_build_publish_skeleton(client, device, "device_state");
   iks *state;
   char eid_str[20];
   if (ast_test_flag(&pubsubflags, AJI_PUBSUB_AUTOCREATE)) {
      if (ast_test_flag(&pubsubflags, AJI_XEP0248)) {
         aji_create_pubsub_node(client, "leaf", device, "device_state");
      } else {
         aji_create_pubsub_node(client, NULL, device, NULL);
      }
   }
   ast_eid_to_str(eid_str, sizeof(eid_str), &ast_eid_default);
   state = iks_insert(request, "state");
   iks_insert_attrib(state, "xmlns", "http://asterisk.org");
   iks_insert_attrib(state, "eid", eid_str);
   iks_insert_cdata(state, device_state, strlen(device_state));
   ast_aji_send(client, iks_root(request));
   iks_delete(request);
}

/*!
 * \brief Publish MWI to a PubSub node
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param device the name of the device whose state to publish
 * \param device_state the state to publish
 * \return void
 */
static void aji_publish_mwi(struct aji_client *client, const char *mailbox,
   const char *context, const char *oldmsgs, const char *newmsgs)
{
   char full_mailbox[AST_MAX_EXTENSION+AST_MAX_CONTEXT];
   char eid_str[20];
   iks *mailbox_node, *request;
   snprintf(full_mailbox, sizeof(full_mailbox), "%s@%s", mailbox, context);
   request = aji_build_publish_skeleton(client, full_mailbox, "message_waiting");
   ast_eid_to_str(eid_str, sizeof(eid_str), &ast_eid_default);
   mailbox_node = iks_insert(request, "mailbox");
   iks_insert_attrib(mailbox_node, "xmlns", "http://asterisk.org");
   iks_insert_attrib(mailbox_node, "eid", eid_str);
   iks_insert_cdata(iks_insert(mailbox_node, "NEWMSGS"), newmsgs, strlen(newmsgs));
   iks_insert_cdata(iks_insert(mailbox_node, "OLDMSGS"), oldmsgs, strlen(oldmsgs));
   ast_aji_send(client, iks_root(request));
   iks_delete(request);
}

/*!
 * \brief Create an IQ packet
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param type the type of IQ packet to create
 * \return iks*
 */
static iks* aji_pubsub_iq_create(struct aji_client *client, const char *type)
{
   iks *request = iks_new("iq");

   iks_insert_attrib(request, "to", client->pubsub_node);
   iks_insert_attrib(request, "from", client->jid->full);
   iks_insert_attrib(request, "type", type);
   ast_aji_increment_mid(client->mid);
   iks_insert_attrib(request, "id", client->mid);
   return request;
}

static int aji_handle_pubsub_error(void *data, ikspak *pak)
{
   char *node_name;
   char *error;
   int error_num;
   iks *orig_request;
   iks *orig_pubsub = iks_find(pak->x, "pubsub");
   struct aji_client *client = ASTOBJ_REF((struct aji_client *) data);
   if (!orig_pubsub) {
      ast_log(LOG_ERROR, "Error isn't a PubSub error, why are we here?\n");
      return IKS_FILTER_EAT;
   }
   orig_request = iks_child(orig_pubsub);
   error = iks_find_attrib(iks_find(pak->x, "error"), "code");
   node_name = iks_find_attrib(orig_request, "node");
   if (!sscanf(error, "%30d", &error_num)) {
      return IKS_FILTER_EAT;
   }
   if (error_num > 399 && error_num < 500 && error_num != 404) {
      ast_log(LOG_ERROR,
         "Error performing operation on PubSub node %s, %s.\n", node_name, error);
      return IKS_FILTER_EAT;
   } else if (error_num > 499 && error_num < 600) {
      ast_log(LOG_ERROR, "PubSub Server error, %s\n", error);
      return IKS_FILTER_EAT;
   }

   if (!strcasecmp(iks_name(orig_request), "publish")) {
      iks *request;
      if (ast_test_flag(&pubsubflags, AJI_XEP0248)) {
         if (iks_find(iks_find(orig_request, "item"), "state")) {
            aji_create_pubsub_leaf(client, "device_state", node_name);
         } else if (iks_find(iks_find(orig_request, "item"), "mailbox")) {
            aji_create_pubsub_leaf(client, "message_waiting", node_name);
         }
      } else {
         aji_create_pubsub_node(client, NULL, node_name, NULL);
      }
      request = aji_pubsub_iq_create(client, "set");
      iks_insert_node(request, orig_pubsub);
      ast_aji_send(client, request);
      iks_delete(request);
      return IKS_FILTER_EAT;
   } else if (!strcasecmp(iks_name(orig_request), "subscribe")) {
      if (ast_test_flag(&pubsubflags, AJI_XEP0248)) {
         aji_create_pubsub_collection(client, node_name);
      } else {
         aji_create_pubsub_node(client, NULL, node_name, NULL);
      }
   }

   return IKS_FILTER_EAT;
}

/*!
 * \brief Request item list from pubsub
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param collection name of the collection for request
 * \return void
 */
static void aji_request_pubsub_nodes(struct aji_client *client, const char *collection)
{
   iks *request = aji_build_node_request(client, collection);

   iks_filter_add_rule(client->f, aji_receive_node_list, client, IKS_RULE_TYPE,
      IKS_PAK_IQ, IKS_RULE_SUBTYPE, IKS_TYPE_RESULT, IKS_RULE_ID, client->mid,
      IKS_RULE_DONE);
   ast_aji_send(client, request);
   iks_delete(request);

}

/*!
 * \brief Build the a node request
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param collection name of the collection for request
 * \return iks*
 */
static iks* aji_build_node_request(struct aji_client *client, const char *collection)
{
   iks *request = aji_pubsub_iq_create(client, "get");
   iks *query;
   query = iks_insert(request, "query");
   iks_insert_attrib(query, "xmlns", "http://jabber.org/protocol/disco#items");
   if (collection) {
      iks_insert_attrib(query, "node", collection);
   }
   return request;
}

/*!
 * \brief Receive pubsub item lists
 * \param data pointer to aji_client structure
 * \param pak response from pubsub diso#items query
 * \return IKS_FILTER_EAT
 */
static int aji_receive_node_list(void *data, ikspak* pak)
{

   struct aji_client *client = ASTOBJ_REF((struct aji_client *) data);
   iks *item = NULL;
   if (iks_has_children(pak->query)) {
      item = iks_first_tag(pak->query);
      ast_verbose("Connection %s: %s\nNode name: %s\n", client->name, client->jid->partial,
         iks_find_attrib(item, "node"));
      while ((item = iks_next_tag(item))) {
         ast_verbose("Node name: %s\n", iks_find_attrib(item, "node"));
      }
   }
   if (item) {
      iks_delete(item);
   }
   return IKS_FILTER_EAT;
}


/*!
 * \brief Method to expose PubSub node list via CLI.
 * \param e pointer to ast_cli_entry structure
 * \param cmd
 * \param a pointer to ast_cli_args structure
 * \return char *
 */
static char *aji_cli_list_pubsub_nodes(struct ast_cli_entry *e, int cmd, struct
ast_cli_args *a)
{
      struct aji_client *client;
      const char *name = NULL;
      const char *collection = NULL;

      switch (cmd) {
      case CLI_INIT:
            e->command = "jabber list nodes";
            e->usage =
               "Usage: jabber list nodes <connection> [collection]\n"
               "       Lists the user's nodes on the respective connection\n"
               "       ([connection] as configured in jabber.conf.)\n";
         return NULL;
      case CLI_GENERATE:
         return NULL;
      }

      if (a->argc > 5 || a->argc < 4) {
         return CLI_SHOWUSAGE;
      } else if (a->argc == 4 || a->argc == 5) {
         name = a->argv[3];
      }
      if (a->argc == 5) {
         collection = a->argv[4];
      }
        if (!(client = ASTOBJ_CONTAINER_FIND(&clients, name))) {
         ast_cli(a->fd, "Unable to find client '%s'!\n", name);
         return CLI_FAILURE;
      }

      ast_cli(a->fd, "Listing pubsub nodes.\n");
      aji_request_pubsub_nodes(client, collection);
      return CLI_SUCCESS;
}

/*!
 * \brief Method to purge PubSub nodes via CLI.
 * \param e pointer to ast_cli_entry structure
 * \param cmd
 * \param a pointer to ast_cli_args structure
 * \return char *
 */
static char *aji_cli_purge_pubsub_nodes(struct ast_cli_entry *e, int cmd, struct
   ast_cli_args *a)
{
   struct aji_client *client;
   const char *name;

   switch (cmd) {
      case CLI_INIT:
         e->command = "jabber purge nodes";
         e->usage =
               "Usage: jabber purge nodes <connection> <node>\n"
               "       Purges nodes on PubSub server\n"
               "       as configured in jabber.conf.\n";
         return NULL;
      case CLI_GENERATE:
         return NULL;
   }

   if (a->argc != 5) {
      return CLI_SHOWUSAGE;
   }
   name = a->argv[3];

   if (!(client = ASTOBJ_CONTAINER_FIND(&clients, name))) {
      ast_cli(a->fd, "Unable to find client '%s'!\n", name);
      return CLI_FAILURE;
   }
   if (ast_test_flag(&pubsubflags, AJI_XEP0248)) {
      aji_pubsub_purge_nodes(client, a->argv[4]);
   } else {
      aji_delete_pubsub_node(client, a->argv[4]);
   }
   return CLI_SUCCESS;
}

static void aji_pubsub_purge_nodes(struct aji_client *client, const char* collection_name)
{
   iks *request = aji_build_node_request(client, collection_name);
   ast_aji_send(client, request);
   iks_filter_add_rule(client->f, aji_delete_node_list, client, IKS_RULE_TYPE,
      IKS_PAK_IQ, IKS_RULE_SUBTYPE, IKS_TYPE_RESULT, IKS_RULE_ID, client->mid,
      IKS_RULE_DONE);
   ast_aji_send(client, request);
   iks_delete(request);
}

/*!
 * \brief Delete pubsub item lists
 * \param data pointer to aji_client structure
 * \param pak response from pubsub diso#items query
 * \return IKS_FILTER_EAT
 */
static int aji_delete_node_list(void *data, ikspak* pak)
{

   struct aji_client *client = ASTOBJ_REF((struct aji_client *) data);
   iks *item = NULL;
   if (iks_has_children(pak->query)) {
      item = iks_first_tag(pak->query);
      ast_log(LOG_WARNING, "Connection: %s  Node name: %s\n", client->jid->partial,
            iks_find_attrib(item, "node"));
      while ((item = iks_next_tag(item))) {
         aji_delete_pubsub_node(client, iks_find_attrib(item, "node"));
      }
   }
   if (item) {
      iks_delete(item);
   }
   return IKS_FILTER_EAT;
}


/*!
 * \brief Method to expose PubSub node deletion via CLI.
 * \param e pointer to ast_cli_entry structure
 * \param cmd
 * \param a pointer to ast_cli_args structure
 * \return char *
 */
static char *aji_cli_delete_pubsub_node(struct ast_cli_entry *e, int cmd, struct
   ast_cli_args *a)
{
   struct aji_client *client;
   const char *name;

   switch (cmd) {
      case CLI_INIT:
         e->command = "jabber delete node";
         e->usage =
               "Usage: jabber delete node <connection> <node>\n"
               "       Deletes a node on PubSub server\n"
               "       as configured in jabber.conf.\n";
         return NULL;
      case CLI_GENERATE:
         return NULL;
   }

   if (a->argc != 5) {
      return CLI_SHOWUSAGE;
   }
   name = a->argv[3];

   if (!(client = ASTOBJ_CONTAINER_FIND(&clients, name))) {
      ast_cli(a->fd, "Unable to find client '%s'!\n", name);
      return CLI_FAILURE;
   }
   aji_delete_pubsub_node(client, a->argv[4]);
   return CLI_SUCCESS;
}

/*!
 * \brief Delete a PubSub node
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param node_name the name of the node to delete
 * return void
 */
static void aji_delete_pubsub_node(struct aji_client *client, const char *node_name)
{
   iks *request = aji_pubsub_iq_create(client, "set");
   iks *pubsub, *delete;
   pubsub = iks_insert(request, "pubsub");
   iks_insert_attrib(pubsub, "xmlns", "http://jabber.org/protocol/pubsub#owner");
   delete = iks_insert(pubsub, "delete");
   iks_insert_attrib(delete, "node", node_name);
   ast_aji_send(client, request);
}

/*!
 * \brief Create a PubSub collection node.
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param collection_name The name to use for this collection
 * \return void.
 */
static void aji_create_pubsub_collection(struct aji_client *client, const char
*collection_name)
{
   aji_create_pubsub_node(client, "collection", collection_name, NULL);
}


/*!
 * \brief Create a PubSub leaf node.
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param leaf_name The name to use for this collection
 * \return void.
 */
static void aji_create_pubsub_leaf(struct aji_client *client, const char *collection_name,
const char *leaf_name)
{
   aji_create_pubsub_node(client, "leaf", leaf_name, collection_name);
}

/*!
 * \brief Create a pubsub node
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param node_type the type of node to create
 * \param name the name of the node to create
 * \return iks*
 */
static iks* aji_create_pubsub_node(struct aji_client *client, const char *node_type, const
      char *name, const char *collection_name)
{
   iks *node = aji_pubsub_iq_create(client, "set");
   iks *pubsub, *create;
   pubsub = iks_insert(node, "pubsub");
   iks_insert_attrib(pubsub, "xmlns", "http://jabber.org/protocol/pubsub");
   create = iks_insert(pubsub, "create");
   iks_insert_attrib(create, "node", name);
   aji_build_node_config(pubsub, node_type, collection_name);
   ast_aji_send(client, node);
   aji_create_affiliations(client, name);
   iks_delete(node);
   return 0;
}



static iks* aji_build_node_config(iks *pubsub, const char *node_type, const char *collection_name)
{
   iks *configure, *x, *field_owner, *field_node_type, *field_node_config,
      *field_deliver_payload, *field_persist_items, *field_access_model,
      *field_pubsub_collection;
   configure = iks_insert(pubsub, "configure");
   x = iks_insert(configure, "x");
   iks_insert_attrib(x, "xmlns", "jabber:x:data");
   iks_insert_attrib(x, "type", "submit");
   field_owner = iks_insert(x, "field");
   iks_insert_attrib(field_owner, "var", "FORM_TYPE");
   iks_insert_attrib(field_owner, "type", "hidden");
   iks_insert_cdata(iks_insert(field_owner, "value"),
      "http://jabber.org/protocol/pubsub#owner", 39);
   if (node_type) {
      field_node_type = iks_insert(x, "field");
      iks_insert_attrib(field_node_type, "var", "pubsub#node_type");
      iks_insert_cdata(iks_insert(field_node_type, "value"), node_type, strlen(node_type));
   }
   field_node_config = iks_insert(x, "field");
   iks_insert_attrib(field_node_config, "var", "FORM_TYPE");
   iks_insert_attrib(field_node_config, "type", "hidden");
   iks_insert_cdata(iks_insert(field_node_config, "value"),
      "http://jabber.org/protocol/pubsub#node_config", 45);
   field_deliver_payload = iks_insert(x, "field");
   iks_insert_attrib(field_deliver_payload, "var", "pubsub#deliver_payloads");
   iks_insert_cdata(iks_insert(field_deliver_payload, "value"), "1", 1);
   field_persist_items = iks_insert(x, "field");
   iks_insert_attrib(field_persist_items, "var", "pubsub#persist_items");
   iks_insert_cdata(iks_insert(field_persist_items, "value"), "1", 1);
   field_access_model = iks_insert(x, "field");
   iks_insert_attrib(field_access_model, "var", "pubsub#access_model");
   iks_insert_cdata(iks_insert(field_access_model, "value"), "whitelist", 9);
   if (node_type && !strcasecmp(node_type, "leaf")) {
      field_pubsub_collection = iks_insert(x, "field");
      iks_insert_attrib(field_pubsub_collection, "var", "pubsub#collection");
      iks_insert_cdata(iks_insert(field_pubsub_collection, "value"), collection_name,
         strlen(collection_name));
   }
   return configure;
}



/*!
 * \brief Method to expose PubSub collection node creation via CLI.
 * \return char *.
 */
static char *aji_cli_create_collection(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
      struct aji_client *client;
      const char *name;
      const char *collection_name;

      switch (cmd) {
      case CLI_INIT:
            e->command = "jabber create collection";
            e->usage =
               "Usage: jabber create collection <connection> <collection>\n"
               "       Creates a PubSub collection node using the account\n"
               "       as configured in jabber.conf.\n";
         return NULL;
      case CLI_GENERATE:
         return NULL;
      }

      if (a->argc != 5) {
         return CLI_SHOWUSAGE;
      }
      name = a->argv[3];
      collection_name = a->argv[4];

      if (!(client = ASTOBJ_CONTAINER_FIND(&clients, name))) {
         ast_cli(a->fd, "Unable to find client '%s'!\n", name);
         return CLI_FAILURE;
      }

      ast_cli(a->fd, "Creating test PubSub node collection.\n");
      aji_create_pubsub_collection(client, collection_name);
      return CLI_SUCCESS;
}

/*!
 * \brief Method to expose PubSub leaf node creation via CLI.
 * \return char *.
 */
static char *aji_cli_create_leafnode(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
   struct aji_client *client;
   const char *name;
   const char *collection_name;
   const char *leaf_name;

   switch (cmd) {
      case CLI_INIT:
         e->command = "jabber create leaf";
         e->usage =
               "Usage: jabber create leaf <connection> <collection> <leaf>\n"
               "       Creates a PubSub leaf node using the account\n"
               "       as configured in jabber.conf.\n";
         return NULL;
      case CLI_GENERATE:
         return NULL;
   }

   if (a->argc != 6) {
      return CLI_SHOWUSAGE;
   }
   name = a->argv[3];
   collection_name = a->argv[4];
   leaf_name = a->argv[5];

   if (!(client = ASTOBJ_CONTAINER_FIND(&clients, name))) {
      ast_cli(a->fd, "Unable to find client '%s'!\n", name);
      return CLI_FAILURE;
   }

   ast_cli(a->fd, "Creating test PubSub node collection.\n");
   aji_create_pubsub_leaf(client, collection_name, leaf_name);
   return CLI_SUCCESS;
}



/*!
 * \internal
 * \brief set presence of client.
 * \param client the configured XMPP client we use to connect to a XMPP server
 * \param to user send it to
 * \param from user it came from
 * \param level
 * \param desc
 * \return void.
 */
static void aji_set_presence(struct aji_client *client, char *to, char *from, int level, char *desc)
{
   iks *presence = iks_make_pres(level, desc);
   iks *cnode = iks_new("c");
   iks *priority = iks_new("priority");
   char priorityS[10];

   if (presence && cnode && client && priority) {
      if (to) {
         iks_insert_attrib(presence, "to", to);
      }
      if (from) {
         iks_insert_attrib(presence, "from", from);
      }
      snprintf(priorityS, sizeof(priorityS), "%d", client->priority);
      iks_insert_cdata(priority, priorityS, strlen(priorityS));
      iks_insert_node(presence, priority);
      iks_insert_attrib(cnode, "node", "http://www.asterisk.org/xmpp/client/caps");
      iks_insert_attrib(cnode, "ver", "asterisk-xmpp");
      iks_insert_attrib(cnode, "ext", "voice-v1");
      iks_insert_attrib(cnode, "xmlns", "http://jabber.org/protocol/caps");
      iks_insert_node(presence, cnode);
      ast_aji_send(client, presence);
   } else {
      ast_log(LOG_ERROR, "Out of memory.\n");
   }

   iks_delete(cnode);
   iks_delete(presence);
   iks_delete(priority);
}

/*
* \brief set the presence of the client in a groupchat context.
* \param client the configured XMPP client we use to connect to a XMPP server
* \param room the groupchat identifier in the from roomname@service
* \param from user it came from
* \param level the type of action, i.e. join or leave the chatroom
* \param nick the nickname to use in the chatroom
* \param desc a text that details the action to be taken
* \return res.
*/
static int aji_set_group_presence(struct aji_client *client, char *room, int level, char *nick, char *desc)
{
   int res = 0;
   iks *presence = NULL, *x = NULL;
   char from[AJI_MAX_JIDLEN];
   char roomid[AJI_MAX_JIDLEN];

   presence = iks_make_pres(level, NULL);
   x = iks_new("x");

   if (client->component) {
      snprintf(from, AJI_MAX_JIDLEN, "%s@%s/%s", nick, client->jid->full, nick);
      snprintf(roomid, AJI_MAX_JIDLEN, "%s/%s", room, nick);
   } else {
      snprintf(from, AJI_MAX_JIDLEN, "%s", client->jid->full);
      snprintf(roomid, AJI_MAX_JIDLEN, "%s/%s", room, nick ? nick : client->jid->user);
   }

   if (!presence || !x || !client) {
      ast_log(LOG_ERROR, "Out of memory.\n");
      res = -1;
      goto safeout;
   } else {
      iks_insert_attrib(presence, "to", roomid);
      iks_insert_attrib(presence, "from", from);
      iks_insert_attrib(x, "xmlns", MUC_NS);
      iks_insert_node(presence, x);
      res = ast_aji_send(client, presence);
   }

safeout:
   iks_delete(presence);
   iks_delete(x);
   return res;
}

/*!
 * \internal
 * \brief Turn on/off console debugging.
 * \return CLI_SUCCESS.
 */
static char *aji_do_set_debug(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
   switch (cmd) {
   case CLI_INIT:
      e->command = "jabber set debug {on|off}";
      e->usage =
         "Usage: jabber set debug {on|off}\n"
         "       Enables/disables dumping of XMPP/Jabber packets for debugging purposes.\n";
      return NULL;
   case CLI_GENERATE:
      return NULL;
   }

   if (a->argc != e->args) {
      return CLI_SHOWUSAGE;
   }

   if (!strncasecmp(a->argv[e->args - 1], "on", 2)) {
      ASTOBJ_CONTAINER_TRAVERSE(&clients, 1, {
         ASTOBJ_RDLOCK(iterator);
         iterator->debug = 1;
         ASTOBJ_UNLOCK(iterator);
      });
      ast_cli(a->fd, "Jabber Debugging Enabled.\n");
      return CLI_SUCCESS;
   } else if (!strncasecmp(a->argv[e->args - 1], "off", 3)) {
      ASTOBJ_CONTAINER_TRAVERSE(&clients, 1, {
         ASTOBJ_RDLOCK(iterator);
         iterator->debug = 0;
         ASTOBJ_UNLOCK(iterator);
      });
      ast_cli(a->fd, "Jabber Debugging Disabled.\n");
      return CLI_SUCCESS;
   }
   return CLI_SHOWUSAGE; /* defaults to invalid */
}

/*!
 * \internal
 * \brief Reload jabber module.
 * \return CLI_SUCCESS.
 */
static char *aji_do_reload(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
   switch (cmd) {
   case CLI_INIT:
      e->command = "jabber reload";
      e->usage =
         "Usage: jabber reload\n"
         "       Reloads the Jabber module.\n";
      return NULL;
   case CLI_GENERATE:
      return NULL;
   }

   aji_reload(1);
   ast_cli(a->fd, "Jabber Reloaded.\n");
   return CLI_SUCCESS;
}

/*!
 * \internal
 * \brief Show client status.
 * \return CLI_SUCCESS.
 */
static char *aji_show_clients(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
   char *status;
   int count = 0;

   switch (cmd) {
   case CLI_INIT:
      e->command = "jabber show connections";
      e->usage =
         "Usage: jabber show connections\n"
         "       Shows state of client and component connections\n";
      return NULL;
   case CLI_GENERATE:
      return NULL;
   }

   ast_cli(a->fd, "Jabber Users and their status:\n");
   ASTOBJ_CONTAINER_TRAVERSE(&clients, 1, {
      ASTOBJ_RDLOCK(iterator);
      count++;
      switch (iterator->state) {
      case AJI_DISCONNECTED:
         status = "Disconnected";
         break;
      case AJI_CONNECTING:
         status = "Connecting";
         break;
      case AJI_CONNECTED:
         status = "Connected";
         break;
      default:
         status = "Unknown";
      }
      ast_cli(a->fd, "       [%s] %s     - %s\n", iterator->name, iterator->user, status);
      ASTOBJ_UNLOCK(iterator);
   });
   ast_cli(a->fd, "----\n");
   ast_cli(a->fd, "   Number of users: %d\n", count);
   return CLI_SUCCESS;
}

/*!
 * \internal
 * \brief Show buddy lists
 * \return CLI_SUCCESS.
 */
static char *aji_show_buddies(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
   struct aji_resource *resource;
   struct aji_client *client;

   switch (cmd) {
   case CLI_INIT:
      e->command = "jabber show buddies";
      e->usage =
         "Usage: jabber show buddies\n"
         "       Shows buddy lists of our clients\n";
      return NULL;
   case CLI_GENERATE:
      return NULL;
   }

   ast_cli(a->fd, "Jabber buddy lists\n");
   ASTOBJ_CONTAINER_TRAVERSE(&clients, 1, {
      ast_cli(a->fd, "Client: %s\n", iterator->user);
      client = iterator;
      ASTOBJ_CONTAINER_TRAVERSE(&client->buddies, 1, {
         ASTOBJ_RDLOCK(iterator);
         ast_cli(a->fd, "\tBuddy:\t%s\n", iterator->name);
         if (!iterator->resources)
            ast_cli(a->fd, "\t\tResource: None\n");
         for (resource = iterator->resources; resource; resource = resource->next) {
            ast_cli(a->fd, "\t\tResource: %s\n", resource->resource);
            if (resource->cap) {
               ast_cli(a->fd, "\t\t\tnode: %s\n", resource->cap->parent->node);
               ast_cli(a->fd, "\t\t\tversion: %s\n", resource->cap->version);
               ast_cli(a->fd, "\t\t\tJingle capable: %s\n", resource->cap->jingle ? "yes" : "no");
            }
            ast_cli(a->fd, "\t\tStatus: %d\n", resource->status);
            ast_cli(a->fd, "\t\tPriority: %d\n", resource->priority);
         }
         ASTOBJ_UNLOCK(iterator);
      });
      iterator = client;
   });
   return CLI_SUCCESS;
}

/*!
 * \internal
 * \brief Send test message for debugging.
 * \return CLI_SUCCESS,CLI_FAILURE.
 */
static char *aji_test(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
{
   struct aji_client *client;
   struct aji_resource *resource;
   const char *name;
   struct aji_message *tmp;

   switch (cmd) {
   case CLI_INIT:
      e->command = "jabber test";
      e->usage =
         "Usage: jabber test <connection>\n"
         "       Sends test message for debugging purposes.  A specific client\n"
         "       as configured in jabber.conf must be specified.\n";
      return NULL;
   case CLI_GENERATE:
      return NULL;
   }

   if (a->argc != 3) {
      return CLI_SHOWUSAGE;
   }
   name = a->argv[2];

   if (!(client = ASTOBJ_CONTAINER_FIND(&clients, name))) {
      ast_cli(a->fd, "Unable to find client '%s'!\n", name);
      return CLI_FAILURE;
   }

   /* XXX Does Matt really want everyone to use his personal address for tests? */ /* XXX yes he does */
   ast_aji_send_chat(client, "mogorman@astjab.org", "blahblah");
   ASTOBJ_CONTAINER_TRAVERSE(&client->buddies, 1, {
      ASTOBJ_RDLOCK(iterator);
      ast_verbose("User: %s\n", iterator->name);
      for (resource = iterator->resources; resource; resource = resource->next) {
         ast_verbose("Resource: %s\n", resource->resource);
         if (resource->cap) {
            ast_verbose("   client: %s\n", resource->cap->parent->node);
            ast_verbose("   version: %s\n", resource->cap->version);
            ast_verbose("   Jingle Capable: %d\n", resource->cap->jingle);
         }
         ast_verbose("  Priority: %d\n", resource->priority);
         ast_verbose("  Status: %d\n", resource->status);
         ast_verbose("  Message: %s\n", S_OR(resource->description, ""));
      }
      ASTOBJ_UNLOCK(iterator);
   });
   ast_verbose("\nOooh a working message stack!\n");
   AST_LIST_LOCK(&client->messages);
   AST_LIST_TRAVERSE(&client->messages, tmp, list) {
      //ast_verbose("   Message from: %s with id %s @ %s %s\n",tmp->from, S_OR(tmp->id,""), ctime(&tmp->arrived), S_OR(tmp->message, ""));
   }
   AST_LIST_UNLOCK(&client->messages);
   ASTOBJ_UNREF(client, aji_client_destroy);

   return CLI_SUCCESS;
}

/*!
 * \internal
 * \brief creates aji_client structure.
 * \param label
 * \param var ast_variable
 * \param debug
 * \return 0.
 */
static int aji_create_client(char *label, struct ast_variable *var, int debug)
{
   char *resource;
   struct aji_client *client = NULL;
   int flag = 0;

   client = ASTOBJ_CONTAINER_FIND(&clients, label);
   if (!client) {
      flag = 1;
      client = ast_calloc(1, sizeof(*client));
      if (!client) {
         ast_log(LOG_ERROR, "Out of memory!\n");
         return 0;
      }
      ASTOBJ_INIT(client);
      ASTOBJ_WRLOCK(client);
      ASTOBJ_CONTAINER_INIT(&client->buddies);
   } else {
      ASTOBJ_WRLOCK(client);
      ASTOBJ_UNMARK(client);
   }
   ASTOBJ_CONTAINER_MARKALL(&client->buddies);
   ast_copy_string(client->name, label, sizeof(client->name));
   ast_copy_string(client->mid, "aaaaa", sizeof(client->mid));

   /* Set default values for the client object */
   client->debug = debug;
   ast_copy_flags(&client->flags, &globalflags, AST_FLAGS_ALL);
   client->port = 5222;
   client->usetls = 1;
   client->usesasl = 1;
   client->forcessl = 0;
   client->keepalive = 1;
   client->timeout = 50;
   client->message_timeout = 5;
   client->distribute_events = 0;
   AST_LIST_HEAD_INIT(&client->messages);
   client->component = 0;
   ast_copy_string(client->statusmessage, "Online and Available", sizeof(client->statusmessage));
   client->priority = 0;
   client->status = IKS_SHOW_AVAILABLE;

   if (flag) {
      client->authorized = 0;
      client->state = AJI_DISCONNECTED;
   }
   while (var) {
      if (!strcasecmp(var->name, "username")) {
         ast_copy_string(client->user, var->value, sizeof(client->user));
      } else if (!strcasecmp(var->name, "serverhost")) {
         ast_copy_string(client->serverhost, var->value, sizeof(client->serverhost));
      } else if (!strcasecmp(var->name, "secret")) {
         ast_copy_string(client->password, var->value, sizeof(client->password));
      } else if (!strcasecmp(var->name, "statusmessage")) {
         ast_copy_string(client->statusmessage, var->value, sizeof(client->statusmessage));
      } else if (!strcasecmp(var->name, "port")) {
         client->port = atoi(var->value);
      } else if (!strcasecmp(var->name, "timeout")) {
         client->message_timeout = atoi(var->value);
      } else if (!strcasecmp(var->name, "debug")) {
         client->debug = (ast_false(var->value)) ? 0 : 1;
      } else if (!strcasecmp(var->name, "type")) {
         if (!strcasecmp(var->value, "component")) {
            client->component = 1;
            if (client->distribute_events) {
               ast_log(LOG_ERROR, "Client cannot be configured to be both a component and to distribute events!  Event distribution will be disabled.\n");
               client->distribute_events = 0;
            }
         }
      } else if (!strcasecmp(var->name, "distribute_events")) {
         if (ast_true(var->value)) {
            if (client->component) {
               ast_log(LOG_ERROR, "Client cannot be configured to be both a component and to distribute events!  Event distribution will be disabled.\n");
            } else {
               if (ast_test_flag(&pubsubflags, AJI_PUBSUB)) {
                  ast_log(LOG_ERROR, "Only one connection can be configured for distributed events.\n");
               } else {
                  ast_set_flag(&pubsubflags, AJI_PUBSUB);
                  client->distribute_events = 1;
               }
            }
         }
      } else if (!strcasecmp(var->name, "pubsub_node")) {
         ast_copy_string(client->pubsub_node, var->value, sizeof(client->pubsub_node));
      } else if (!strcasecmp(var->name, "usetls")) {
         client->usetls = (ast_false(var->value)) ? 0 : 1;
      } else if (!strcasecmp(var->name, "usesasl")) {
         client->usesasl = (ast_false(var->value)) ? 0 : 1;
      } else if (!strcasecmp(var->name, "forceoldssl")) {
         client->forcessl = (ast_false(var->value)) ? 0 : 1;
      } else if (!strcasecmp(var->name, "keepalive")) {
         client->keepalive = (ast_false(var->value)) ? 0 : 1;
      } else if (!strcasecmp(var->name, "autoprune")) {
         ast_set2_flag(&client->flags, ast_true(var->value), AJI_AUTOPRUNE);
      } else if (!strcasecmp(var->name, "autoregister")) {
         ast_set2_flag(&client->flags, ast_true(var->value), AJI_AUTOREGISTER);
      } else if (!strcasecmp(var->name, "auth_policy")) {
         if (!strcasecmp(var->value, "accept")) {
            ast_set_flag(&client->flags, AJI_AUTOACCEPT);
         } else {
            ast_clear_flag(&client->flags, AJI_AUTOACCEPT);
         }
      } else if (!strcasecmp(var->name, "buddy")) {
         aji_create_buddy((char *)var->value, client);
      } else if (!strcasecmp(var->name, "priority")) {
         client->priority = atoi(var->value);
      } else if (!strcasecmp(var->name, "status")) {
         if (!strcasecmp(var->value, "unavailable")) {
            client->status = IKS_SHOW_UNAVAILABLE;
         } else if (!strcasecmp(var->value, "available")
          || !strcasecmp(var->value, "online")) {
            client->status = IKS_SHOW_AVAILABLE;
         } else if (!strcasecmp(var->value, "chat")
          || !strcasecmp(var->value, "chatty")) {
            client->status = IKS_SHOW_CHAT;
         } else if (!strcasecmp(var->value, "away")) {
            client->status = IKS_SHOW_AWAY;
         } else if (!strcasecmp(var->value, "xa")
          || !strcasecmp(var->value, "xaway")) {
            client->status = IKS_SHOW_XA;
         } else if (!strcasecmp(var->value, "dnd")) {
            client->status = IKS_SHOW_DND;
         } else if (!strcasecmp(var->value, "invisible")) {
         #ifdef IKS_SHOW_INVISIBLE
            client->status = IKS_SHOW_INVISIBLE;
         #else
            ast_log(LOG_WARNING, "Your iksemel doesn't support invisible status: falling back to DND\n");
            client->status = IKS_SHOW_DND;
         #endif
         } else {
            ast_log(LOG_WARNING, "Unknown presence status: %s\n", var->value);
         }
      }
   /* no transport support in this version */
   /* else if (!strcasecmp(var->name, "transport"))
            aji_create_transport(var->value, client);
   */
      var = var->next;
   }
   if (!flag) {
      ASTOBJ_UNLOCK(client);
      ASTOBJ_UNREF(client, aji_client_destroy);
      return 1;
   }

   ast_copy_string(client->name_space, (client->component) ? "jabber:component:accept" : "jabber:client", sizeof(client->name_space));
   client->p = iks_stream_new(client->name_space, client, aji_act_hook);
   if (!client->p) {
      ast_log(LOG_ERROR, "Failed to create stream for client '%s'!\n", client->name);
      return 0;
   }
   client->stack = iks_stack_new(8192, 8192);
   if (!client->stack) {
      ast_log(LOG_ERROR, "Failed to allocate stack for client '%s'\n", client->name);
      return 0;
   }
   client->f = iks_filter_new();
   if (!client->f) {
      ast_log(LOG_ERROR, "Failed to create filter for client '%s'\n", client->name);
      return 0;
   }
   if (!strchr(client->user, '/') && !client->component) { /*client */
      resource = NULL;
      if (asprintf(&resource, "%s/asterisk", client->user) >= 0) {
         client->jid = iks_id_new(client->stack, resource);
         ast_free(resource);
      }
   } else {
      client->jid = iks_id_new(client->stack, client->user);
   }
   if (client->component) {
      iks_filter_add_rule(client->f, aji_dinfo_handler, client, IKS_RULE_NS, "http://jabber.org/protocol/disco#info", IKS_RULE_DONE);
      iks_filter_add_rule(client->f, aji_ditems_handler, client, IKS_RULE_NS, "http://jabber.org/protocol/disco#items", IKS_RULE_DONE);
      iks_filter_add_rule(client->f, aji_register_query_handler, client, IKS_RULE_SUBTYPE, IKS_TYPE_GET, IKS_RULE_NS, "jabber:iq:register", IKS_RULE_DONE);
      iks_filter_add_rule(client->f, aji_register_approve_handler, client, IKS_RULE_SUBTYPE, IKS_TYPE_SET, IKS_RULE_NS, "jabber:iq:register", IKS_RULE_DONE);
   } else {
      iks_filter_add_rule(client->f, aji_client_info_handler, client, IKS_RULE_NS, "http://jabber.org/protocol/disco#info", IKS_RULE_DONE);
   }

   iks_set_log_hook(client->p, aji_log_hook);
   ASTOBJ_UNLOCK(client);
   ASTOBJ_CONTAINER_LINK(&clients, client);
   return 1;
}



#if 0
/*!
 * \brief creates transport.
 * \param label, buddy to dump it into. 
 * \return 0.
 */
/* no connecting to transports today */
static int aji_create_transport(char *label, struct aji_client *client)
{
   char *server = NULL, *buddyname = NULL, *user = NULL, *pass = NULL;
   struct aji_buddy *buddy = NULL;

   buddy = ASTOBJ_CONTAINER_FIND(&client->buddies,label);
   if (!buddy) {
      buddy = ast_calloc(1, sizeof(*buddy));
      if (!buddy) {
         ast_log(LOG_WARNING, "Out of memory\n");
         return 0;
      }
      ASTOBJ_INIT(buddy);
   }
   ASTOBJ_WRLOCK(buddy);
   server = label;
   if ((buddyname = strchr(label, ','))) {
      *buddyname = '\0';
      buddyname++;
      if (buddyname && buddyname[0] != '\0') {
         if ((user = strchr(buddyname, ','))) {
            *user = '\0';
            user++;
            if (user && user[0] != '\0') {
               if ((pass = strchr(user, ','))) {
                  *pass = '\0';
                  pass++;
                  ast_copy_string(buddy->pass, pass, sizeof(buddy->pass));
                  ast_copy_string(buddy->user, user, sizeof(buddy->user));
                  ast_copy_string(buddy->name, buddyname, sizeof(buddy->name));
                  ast_copy_string(buddy->server, server, sizeof(buddy->server));
                  return 1;
               }
            }
         }
      }
   }
   ASTOBJ_UNLOCK(buddy);
   ASTOBJ_UNMARK(buddy);
   ASTOBJ_CONTAINER_LINK(&client->buddies, buddy);
   return 0;
}
#endif

/*!
 * \internal
 * \brief creates buddy.
 * \param label char.
 * \param client the configured XMPP client we use to connect to a XMPP server 
 * \return 1 on success, 0 on failure.
 */
static int aji_create_buddy(char *label, struct aji_client *client)
{
   struct aji_buddy *buddy = NULL;
   int flag = 0;
   buddy = ASTOBJ_CONTAINER_FIND(&client->buddies, label);
   if (!buddy) {
      flag = 1;
      buddy = ast_calloc(1, sizeof(*buddy));
      if (!buddy) {
         ast_log(LOG_WARNING, "Out of memory\n");
         return 0;
      }
      ASTOBJ_INIT(buddy);
   }
   ASTOBJ_WRLOCK(buddy);
   ast_copy_string(buddy->name, label, sizeof(buddy->name));
   ASTOBJ_UNLOCK(buddy);
   if (flag) {
      ASTOBJ_CONTAINER_LINK(&client->buddies, buddy);
   } else {
      ASTOBJ_UNMARK(buddy);
      ASTOBJ_UNREF(buddy, aji_buddy_destroy);
   }
   return 1;
}

/*!< load config file. \return 1. */
static int aji_load_config(int reload)
{
   char *cat = NULL;
   int debug = 0;
   struct ast_config *cfg = NULL;
   struct ast_variable *var = NULL;
   struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };

   if ((cfg = ast_config_load(JABBER_CONFIG, config_flags)) == CONFIG_STATUS_FILEUNCHANGED) {
      return -1;
   }

   /* Reset flags to default value */
   ast_set_flag(&globalflags, AJI_AUTOREGISTER | AJI_AUTOACCEPT);

   if (cfg == CONFIG_STATUS_FILEMISSING || cfg == CONFIG_STATUS_FILEINVALID) {
      ast_log(LOG_WARNING, "No such configuration file %s\n", JABBER_CONFIG);
      return 0;
   }

   cat = ast_category_browse(cfg, NULL);
   for (var = ast_variable_browse(cfg, "general"); var; var = var->next) {
      if (!strcasecmp(var->name, "debug")) {
         debug = (ast_false(ast_variable_retrieve(cfg, "general", "debug"))) ? 0 : 1;
      } else if (!strcasecmp(var->name, "autoprune")) {
         ast_set2_flag(&globalflags, ast_true(var->value), AJI_AUTOPRUNE);
      } else if (!strcasecmp(var->name, "autoregister")) {
         ast_set2_flag(&globalflags, ast_true(var->value), AJI_AUTOREGISTER);
      } else if (!strcasecmp(var->name, "collection_nodes")) {
         ast_set2_flag(&pubsubflags, ast_true(var->value), AJI_XEP0248);
      } else if (!strcasecmp(var->name, "pubsub_autocreate")) {
         ast_set2_flag(&pubsubflags, ast_true(var->value), AJI_PUBSUB_AUTOCREATE);
      } else if (!strcasecmp(var->name, "auth_policy")) {
         if (!strcasecmp(var->value, "accept")) {
            ast_set_flag(&globalflags, AJI_AUTOACCEPT);
         } else {
            ast_clear_flag(&globalflags, AJI_AUTOACCEPT);
         }
      }
   }

   while (cat) {
      if (strcasecmp(cat, "general")) {
         var = ast_variable_browse(cfg, cat);
         aji_create_client(cat, var, debug);
      }
      cat = ast_category_browse(cfg, cat);
   }
   ast_config_destroy(cfg); /* or leak memory */
   return 1;
}

/*!
 * \brief grab a aji_client structure by label name or JID
 * (without the resource string)
 * \param name label or JID
 * \return aji_client.
 */
struct aji_client *ast_aji_get_client(const char *name)
{
   struct aji_client *client = NULL;
   char *aux = NULL;

   client = ASTOBJ_CONTAINER_FIND(&clients, name);
   if (!client && strchr(name, '@')) {
      ASTOBJ_CONTAINER_TRAVERSE(&clients, 1, {
         aux = ast_strdupa(iterator->user);
         if (strchr(aux, '/')) {
            /* strip resource for comparison */
            aux = strsep(&aux, "/");
         }
         if (!strncasecmp(aux, name, strlen(aux))) {
            client = iterator;
         }
      });
   }

   return client;
}

struct aji_client_container *ast_aji_get_clients(void)
{
   return &clients;
}

/*!
 * \internal
 * \brief  Send a Jabber Message via call from the Manager
 * \param s mansession Manager session
 * \param m message Message to send
 * \return  0
*/
static int manager_jabber_send(struct mansession *s, const struct message *m)
{
   struct aji_client *client = NULL;
   const char *id = astman_get_header(m, "ActionID");
   const char *jabber = astman_get_header(m, "Jabber");
   const char *screenname = astman_get_header(m, "ScreenName");
   const char *message = astman_get_header(m, "Message");

   if (ast_strlen_zero(jabber)) {
      astman_send_error(s, m, "No transport specified");
      return 0;
   }
   if (ast_strlen_zero(screenname)) {
      astman_send_error(s, m, "No ScreenName specified");
      return 0;
   }
   if (ast_strlen_zero(message)) {
      astman_send_error(s, m, "No Message specified");
      return 0;
   }

   astman_send_ack(s, m, "Attempting to send Jabber Message");
   client = ast_aji_get_client(jabber);
   if (!client) {
      astman_send_error(s, m, "Could not find Sender");
      return 0;
   }
   if (strchr(screenname, '@') && message) {
      ast_aji_send_chat(client, screenname, message);
      astman_append(s, "Response: Success\r\n");
   } else {
      astman_append(s, "Response: Error\r\n");
   }
   if (!ast_strlen_zero(id)) {
      astman_append(s, "ActionID: %s\r\n", id);
   }
   astman_append(s, "\r\n");
   return 0;
}

/*!
 * \internal
 * \brief Reload the jabber module
 */
static int aji_reload(int reload)
{
   int res;

   ASTOBJ_CONTAINER_MARKALL(&clients);
   if (!(res = aji_load_config(reload))) {
      ast_log(LOG_ERROR, "JABBER: Failed to load config.\n");
      return 0;
   } else if (res == -1)
      return 1;

   ASTOBJ_CONTAINER_PRUNE_MARKED(&clients, aji_client_destroy);
   ASTOBJ_CONTAINER_TRAVERSE(&clients, 1, {
      ASTOBJ_RDLOCK(iterator);
      if (iterator->state == AJI_DISCONNECTED) {
         if (!iterator->thread)
            ast_pthread_create_background(&iterator->thread, NULL, aji_recv_loop, iterator);
      } else if (iterator->state == AJI_CONNECTING) {
         aji_get_roster(iterator);
         if (iterator->distribute_events) {
            aji_init_event_distribution(iterator);
         }
      }

      ASTOBJ_UNLOCK(iterator);
   });

   return 1;
}

/*!
 * \internal
 * \brief Unload the jabber module
 */
static int unload_module(void)
{

   ast_cli_unregister_multiple(aji_cli, ARRAY_LEN(aji_cli));
   ast_unregister_application(app_ajisend);
   ast_unregister_application(app_ajisendgroup);
   ast_unregister_application(app_ajistatus);
   ast_unregister_application(app_ajijoin);
   ast_unregister_application(app_ajileave);
   ast_manager_unregister("JabberSend");
   ast_custom_function_unregister(&jabberstatus_function);
   if (mwi_sub) {
      ast_event_unsubscribe(mwi_sub);
   }
   if (device_state_sub) {
      ast_event_unsubscribe(device_state_sub);
   }
   ast_custom_function_unregister(&jabberreceive_function);

   ASTOBJ_CONTAINER_TRAVERSE(&clients, 1, {
      ASTOBJ_WRLOCK(iterator);
      ast_debug(3, "JABBER: Releasing and disconnecting client: %s\n", iterator->name);
      iterator->state = AJI_DISCONNECTING;
      ASTOBJ_UNLOCK(iterator);
      pthread_join(iterator->thread, NULL);
      ast_aji_disconnect(iterator);
   });

   ASTOBJ_CONTAINER_DESTROYALL(&clients, aji_client_destroy);
   ASTOBJ_CONTAINER_DESTROY(&clients);

   ast_cond_destroy(&message_received_condition);
   ast_mutex_destroy(&messagelock);

   return 0;
}

/*!
 * \internal
 * \brief Unload the jabber module
 */
static int load_module(void)
{
   ASTOBJ_CONTAINER_INIT(&clients);
   if (!aji_reload(0))
      return AST_MODULE_LOAD_DECLINE;
   ast_manager_register_xml("JabberSend", EVENT_FLAG_SYSTEM, manager_jabber_send);
   ast_register_application_xml(app_ajisend, aji_send_exec);
   ast_register_application_xml(app_ajisendgroup, aji_sendgroup_exec);
   ast_register_application_xml(app_ajistatus, aji_status_exec);
   ast_register_application_xml(app_ajijoin, aji_join_exec);
   ast_register_application_xml(app_ajileave, aji_leave_exec);
   ast_cli_register_multiple(aji_cli, ARRAY_LEN(aji_cli));
   ast_custom_function_register(&jabberstatus_function);
   ast_custom_function_register(&jabberreceive_function);

   ast_mutex_init(&messagelock);
   ast_cond_init(&message_received_condition, NULL);
   return 0;
}

/*!
 * \internal
 * \brief Wrapper for aji_reload
 */
static int reload(void)
{
   aji_reload(1);
   return 0;
}

AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_GLOBAL_SYMBOLS | AST_MODFLAG_LOAD_ORDER, "AJI - Asterisk Jabber Interface",
      .load = load_module,
      .unload = unload_module,
      .reload = reload,
      .load_pri = AST_MODPRI_CHANNEL_DEPEND,
          );