/*

 * jab_iq.c     -- Jabber protocol IQ-related fonctions

 *

 * Copyright (C) 2005 Mikael Berthe <bmikael@lists.lilotux.net>

 * Some parts initially came from the centericq project:

 * Copyright (C) 2002-2005 by Konstantin Klyagin <konst@konst.org.ua>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or (at

 * your option) any later version.

 *

 * This program is distributed in the hope that it will be useful, but

 * WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307

 * USA

 */

#include "jabglue.h"

#include "jab_priv.h"

#include "roster.h"

#include "utils.h"

#include "logprint.h"

int s_id; // XXX

static void gotloggedin(void)

{

  xmlnode x;

  x = jutil_iqnew(JPACKET__GET, NS_AGENTS);

  xmlnode_put_attrib(x, "id", "Agent List");

  jab_send(jc, x);

  xmlnode_free(x);

  x = jutil_iqnew(JPACKET__GET, NS_ROSTER);

  xmlnode_put_attrib(x, "id", "Roster");

  jab_send(jc, x);

  xmlnode_free(x);

}

static void gotroster(xmlnode x)

{

  xmlnode y;

  const char *jid, *name, *group;

  char *buddyname;

  char *cleanalias;

  for (y = xmlnode_get_tag(x, "item"); y; y = xmlnode_get_nextsibling(y)) {

    gchar *name_noutf8 = NULL;

    gchar *group_noutf8 = NULL;

    jid = xmlnode_get_attrib(y, "jid");

    name = xmlnode_get_attrib(y, "name");

    //sub = xmlnode_get_attrib(y, "subscription"); // TODO Not used

    group = xmlnode_get_tag_data(y, "group");

    if (!jid)

      continue;

    buddyname = cleanalias = jidtodisp(jid);

    if (name) {

      name_noutf8 = from_utf8(name);

      if (name_noutf8)

        buddyname = name_noutf8;

      else

        scr_LogPrint(LPRINT_LOG, "Decoding of buddy alias has failed: %s",

                     name);

    }

    if (group) {

      group_noutf8 = from_utf8(group);

      if (!group_noutf8)

        scr_LogPrint(LPRINT_LOG, "Decoding of buddy group has failed: %s",

                     group);

    }

    roster_add_user(cleanalias, buddyname, group_noutf8, ROSTER_TYPE_USER);

    if (name_noutf8)  g_free(name_noutf8);

    if (group_noutf8) g_free(group_noutf8);

    g_free(cleanalias);

  }

  // Post-login stuff

  jb_setstatus(available, NULL, NULL);

  buddylist_build();

}

static void gotagents(jconn conn, xmlnode x)

{

  xmlnode y;

  const char *alias;

  const char *name, *desc;

  y = xmlnode_get_tag(x, "agent");

  for (; y; y = xmlnode_get_nextsibling(y)) {

    enum agtype atype = unknown;

    alias = xmlnode_get_attrib(y, "jid");

    if (!alias)

      continue;

    name = xmlnode_get_tag_data(y, "name");

    desc = xmlnode_get_tag_data(y, "description");

    // TODO

    // service = xmlnode_get_tag_data(y, "service");

    if (xmlnode_get_tag(y, TMSG_GROUPCHAT))   atype = groupchat;

    else if (xmlnode_get_tag(y, "transport")) atype = transport;

    else if (xmlnode_get_tag(y, "search"))    atype = search;

    if (atype == transport) {

      char *cleanjid = jidtodisp(alias);

      roster_add_user(cleanjid, NULL, JABBER_AGENT_GROUP,

                      ROSTER_TYPE_AGENT);

      g_free(cleanjid);

    }

    if (alias && name && desc) {

      scr_LogPrint(LPRINT_LOGNORM, "Agent: %s / %s / %s / type=%d",

                   alias, name, desc, atype);

      if (atype == search) {

        x = jutil_iqnew (JPACKET__GET, NS_SEARCH);

        xmlnode_put_attrib(x, "to", alias);

        xmlnode_put_attrib(x, "id", "Agent info");

        jab_send(conn, x);

        xmlnode_free(x);

      }

      if (xmlnode_get_tag(y, "register")) {

        x = jutil_iqnew (JPACKET__GET, NS_REGISTER);

        xmlnode_put_attrib(x, "to", alias);

        xmlnode_put_attrib(x, "id", "Agent info");

        jab_send(conn, x);

        xmlnode_free(x);

      }

    }

  }

}

static void handle_iq_result(jconn conn, char *from, xmlnode xmldata)

{

  xmlnode x;

  char *p;

  char *ns;

  p = xmlnode_get_attrib(xmldata, "id");

  if (!p) {

    scr_LogPrint(LPRINT_LOG, "IQ result stanza with no ID, ignored.");

    return;

  }

    if (jstate == STATE_GETAUTH) {

      if ((x = xmlnode_get_tag(xmldata, "query")) != NULL)

        if (!xmlnode_get_tag(x, "digest")) {

          jc->sid = 0;

        }

      s_id = atoi(jab_auth(jc));

      jstate = STATE_SENDAUTH;

    } else if (jstate == STATE_SENDAUTH) {

      gotloggedin();

      jstate = STATE_LOGGED;

    }

    return;

  }

  if (!strcmp(p, "VCARDreq")) {

    x = xmlnode_get_firstchild(xmldata);

    if (!x) x = xmldata;

    scr_LogPrint(LPRINT_LOGNORM, "Got VCARD");    // TODO

    return;

  } else if (!strcmp(p, "versionreq")) {

    scr_LogPrint(LPRINT_LOGNORM, "Got version");  // TODO

    return;

  }

  x = xmlnode_get_tag(xmldata, "query");

  if (!x) return;

  ns = xmlnode_get_attrib(x, "xmlns");

  if (!ns) return;

  if (!strcmp(ns, NS_ROSTER)) {

    gotroster(x);

  } else if (!strcmp(ns, NS_AGENTS)) {

    gotagents(conn, x);

  } else if (!strcmp(ns, NS_SEARCH) || !strcmp(ns, NS_REGISTER)) {

    char *id = xmlnode_get_attrib(xmldata, "id");

    if (!id) id = "";

    if (!strcmp(id, "Agent info")) {

      scr_LogPrint(LPRINT_LOGNORM, "Got agent info");     // TODO

    } else if (!strcmp(id, "Lookup")) {

      scr_LogPrint(LPRINT_LOGNORM, "Got search results"); // TODO

    } else if (!strcmp(id, "Register")) {

      if (!from)

        return;

      x = jutil_iqnew(JPACKET__GET, NS_REGISTER);

      xmlnode_put_attrib(x, "to", from);

      xmlnode_put_attrib(x, "id", "Agent info");

      jab_send(conn, x);

      xmlnode_free(x);

    }

  }

}

static void handle_iq_get(jconn conn, char *from, xmlnode xmldata)

{

  char *id;

  xmlnode x, y, z;

  id = xmlnode_get_attrib(xmldata, "id");

  if (!id) return;

  // Nothing implemented yet.

  x = xmlnode_new_tag("iq");

  xmlnode_put_attrib(x, "to", from);

  xmlnode_put_attrib(x, "id", id);

  xmlnode_put_attrib(x, "type", TMSG_ERROR);

  y = xmlnode_insert_tag(x, TMSG_ERROR);

  xmlnode_put_attrib(y, "code", "501");

  xmlnode_put_attrib(y, "type", "cancel");

  z = xmlnode_insert_tag(y, "feature-not-implemented");

  xmlnode_put_attrib(z, "xmlns", NS_XMPP_STANZAS);

  jab_send(conn, x);

  xmlnode_free(x);

}

static void handle_iq_set(jconn conn, char *from, xmlnode xmldata)

{

  char *id;

  xmlnode x, y, z;

  id = xmlnode_get_attrib(xmldata, "id");

  if (!id) return;

  /* Not implemented yet: send an error stanza */

  x = xmlnode_new_tag("iq");

  xmlnode_put_attrib(x, "to", from);

  xmlnode_put_attrib(x, "id", id);

  xmlnode_put_attrib(x, "type", TMSG_ERROR);

  y = xmlnode_insert_tag(x, TMSG_ERROR);

  xmlnode_put_attrib(y, "code", "501");

  xmlnode_put_attrib(y, "type", "cancel");

  z = xmlnode_insert_tag(y, "feature-not-implemented");

  xmlnode_put_attrib(z, "xmlns", NS_XMPP_STANZAS);

  jab_send(conn, x);

  xmlnode_free(x);

}

void handle_packet_iq(jconn conn, char *type, char *from, xmlnode xmldata)

{

  if (!type)

    return;

  if (!strcmp(type, "result")) {

    handle_iq_result(conn, from, xmldata);

  } else if (!strcmp(type, "get")) {

    handle_iq_get(conn, from, xmldata);

  } else if (!strcmp(type, "set")) {

    handle_iq_set(conn, from, xmldata);

  } else if (!strcmp(type, TMSG_ERROR)) {

    xmlnode x = xmlnode_get_tag(xmldata, TMSG_ERROR);

    if (x)

      display_server_error(x);

  }

}

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