SSL/TLS Support. Some bug were fixed too.

[siplcs.git] / src / sipe.c

/**
 * @file sip-exchange.c
 *
 * gaim
 *
 * Copyright (C) 2007 Anibal Avelar "Fixxxer"<avelar@gmail.com>
 * Copyright (C) 2005 Thomas Butter <butter@uni-mannheim.de>
 *
 * ***
 * Thanks to Google's Summer of Code Program and the helpful mentors
 * ***
 *
 * 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 "sip-internal.h"

#include "accountopt.h"
#include "blist.h"
#include "conversation.h"
#include "dnsquery.h"
#include "debug.h"
#include "notify.h"
#include "privacy.h"
#include "prpl.h"
#include "plugin.h"
#include "util.h"
#include "version.h"
#include "network.h"
#include "xmlnode.h"

#include "sipe.h"
#include "sip-ntlm.h"

#include "sipmsg.h"
#include "dnssrv.h"

#include "gaim-compat.h"

static char *gentag() {
        return g_strdup_printf("%04d%04d", rand() & 0xFFFF, rand() & 0xFFFF);
}

static char *genbranch() {
        return g_strdup_printf("z9hG4bK%04X%04X%04X%04X%04X",
                rand() & 0xFFFF, rand() & 0xFFFF, rand() & 0xFFFF,
                rand() & 0xFFFF, rand() & 0xFFFF);
}

static char *gencallid() {
        return g_strdup_printf("%04Xg%04Xa%04Xi%04Xm%04Xt%04Xb%04Xx%04Xx",
                rand() & 0xFFFF, rand() & 0xFFFF, rand() & 0xFFFF,
                rand() & 0xFFFF, rand() & 0xFFFF, rand() & 0xFFFF,
                rand() & 0xFFFF, rand() & 0xFFFF);
}

static const char *sipe_list_icon(GaimAccount *a, GaimBuddy *b) {
        return "sipe";
}

static void sipe_keep_alive(GaimConnection *gc) {
        struct sipe_account_data *sip = gc->proto_data;
        if(sip->udp) { /* in case of UDP send a packet only with a 0 byte to
                         remain in the NAT table */
                gchar buf[2] = {0, 0};
                gaim_debug_info("sipe", "sending keep alive\n");
                sendto(sip->fd, buf, 1, 0, (struct sockaddr*)&sip->serveraddr, sizeof(struct sockaddr_in));
        }
        return;
}

static gboolean process_register_response(struct sipe_account_data *sip, struct sipmsg *msg, struct transaction *tc);

static void sipe_input_cb_ssl(gpointer data, PurpleSslConnection *gsc, PurpleInputCondition cond);
static void sipe_ssl_connect_failure(PurpleSslConnection *gsc, PurpleSslErrorType error, 
                                     gpointer data);

static void send_notify(struct sipe_account_data *sip, struct sipe_watcher *);

static void send_service(struct sipe_account_data *sip);

static void do_notifies(struct sipe_account_data *sip) {
        GSList *tmp = sip->watcher;
        gaim_debug_info("sipe", "do_notifies()\n");
        //if((sip->republish != -1) || sip->republish < time(NULL)) {
        //      if(gaim_account_get_bool(sip->account, "doservice", TRUE)) {
        //              send_service(sip);
        //      }
        //}

        while(tmp) {
                gaim_debug_info("sipe", "notifying %s\n", ((struct sipe_watcher*)tmp->data)->name);
                send_notify(sip, tmp->data);
                tmp = tmp->next;
        }
}

static void sipe_set_status(GaimAccount *account, GaimStatus *status) {
        GaimStatusPrimitive primitive = gaim_status_type_get_primitive(gaim_status_get_type(status));
        struct sipe_account_data *sip = NULL;

        if (!gaim_status_is_active(status))
                return;

        if (account->gc)
                sip = account->gc->proto_data;

        if (sip)
        {
                g_free(sip->status);
                if (primitive == GAIM_STATUS_AVAILABLE)
                        sip->status = g_strdup("available");
                else
                        sip->status = g_strdup("busy");

                do_notifies(sip);
        }
}

static struct sip_connection *connection_find(struct sipe_account_data *sip, int fd) {
        struct sip_connection *ret = NULL;
        GSList *entry = sip->openconns;
        while(entry) {
                ret = entry->data;
                if(ret->fd == fd) return ret;
                entry = entry->next;
        }
        return NULL;
}

static struct sipe_watcher *watcher_find(struct sipe_account_data *sip,
                const gchar *name) {
        struct sipe_watcher *watcher;
        GSList *entry = sip->watcher;
        while(entry) {
                watcher = entry->data;
                if(!strcmp(name, watcher->name)) return watcher;
                entry = entry->next;
        }
        return NULL;
}

static struct sipe_watcher *watcher_create(struct sipe_account_data *sip,
                const gchar *name, const gchar *callid, const gchar *ourtag,
                const gchar *theirtag, gboolean needsxpidf) {
        struct sipe_watcher *watcher = g_new0(struct sipe_watcher, 1);
        watcher->name = g_strdup(name);
        watcher->dialog.callid = g_strdup(callid);
        watcher->dialog.ourtag = g_strdup(ourtag);
        watcher->dialog.theirtag = g_strdup(theirtag);
        watcher->needsxpidf = needsxpidf;
        sip->watcher = g_slist_append(sip->watcher, watcher);
        return watcher;
}

static void watcher_remove(struct sipe_account_data *sip, const gchar *name) {
        struct sipe_watcher *watcher = watcher_find(sip, name);
        sip->watcher = g_slist_remove(sip->watcher, watcher);
        g_free(watcher->name);
        g_free(watcher->dialog.callid);
        g_free(watcher->dialog.ourtag);
        g_free(watcher->dialog.theirtag);
        g_free(watcher);
}

static struct sip_connection *connection_create(struct sipe_account_data *sip, int fd) {
        struct sip_connection *ret = g_new0(struct sip_connection, 1);
        ret->fd = fd;
        sip->openconns = g_slist_append(sip->openconns, ret);
        return ret;
}

static void connection_remove(struct sipe_account_data *sip, int fd) {
        struct sip_connection *conn = connection_find(sip, fd);
        sip->openconns = g_slist_remove(sip->openconns, conn);
        if(conn->inputhandler) gaim_input_remove(conn->inputhandler);
        g_free(conn->inbuf);
        g_free(conn);
}

static void connection_free_all(struct sipe_account_data *sip) {
        struct sip_connection *ret = NULL;
        GSList *entry = sip->openconns;
        while(entry) {
                ret = entry->data;
                connection_remove(sip, ret->fd);
                entry = sip->openconns;
        }
}

static void sipe_add_buddy(GaimConnection *gc, GaimBuddy *buddy, GaimGroup *group)
{
        struct sipe_account_data *sip = (struct sipe_account_data *)gc->proto_data;
        struct sipe_buddy *b;
        if(strncmp("sip:", buddy->name, 4)) {
                gchar *buf = g_strdup_printf("sip:%s", buddy->name);
                gaim_blist_rename_buddy(buddy, buf);
                g_free(buf);
        }
        if(!g_hash_table_lookup(sip->buddies, buddy->name)) {
                b = g_new0(struct sipe_buddy, 1);
                gaim_debug_info("sipe", "sipe_add_buddy %s\n", buddy->name);
                b->name = g_strdup(buddy->name);
                g_hash_table_insert(sip->buddies, b->name, b);
        } else {
                gaim_debug_info("sipe", "buddy %s already in internal list\n", buddy->name);
        }
}

static void sipe_get_buddies(GaimConnection *gc) {
        GaimBlistNode *gnode, *cnode, *bnode;

        gaim_debug_info("sipe", "sipe_get_buddies\n");

        for(gnode = gaim_get_blist()->root; gnode; gnode = gnode->next) {
                if(!GAIM_BLIST_NODE_IS_GROUP(gnode)) continue;
                for(cnode = gnode->child; cnode; cnode = cnode->next) {
                        if(!GAIM_BLIST_NODE_IS_CONTACT(cnode)) continue;
                        for(bnode = cnode->child; bnode; bnode = bnode->next) {
                                if(!GAIM_BLIST_NODE_IS_BUDDY(bnode)) continue;
                                if(((GaimBuddy*)bnode)->account == gc->account)
                                        sipe_add_buddy(gc, (GaimBuddy*)bnode, (GaimGroup *)gnode);
                        }
                }
        }
}

static void sipe_remove_buddy(GaimConnection *gc, GaimBuddy *buddy, GaimGroup *group)
{
        struct sipe_account_data *sip = (struct sipe_account_data *)gc->proto_data;
        struct sipe_buddy *b = g_hash_table_lookup(sip->buddies, buddy->name);
        g_hash_table_remove(sip->buddies, buddy->name);
        g_free(b->name);
        g_free(b);
}

static GList *sipe_status_types(GaimAccount *acc) {
        GaimStatusType *type;
        GList *types = NULL;

        type = gaim_status_type_new_with_attrs(
                GAIM_STATUS_AVAILABLE, NULL, NULL, TRUE, TRUE, FALSE,
                "message", _("Message"), gaim_value_new(GAIM_TYPE_STRING),
                NULL);
        types = g_list_append(types, type);

        type = gaim_status_type_new_full(
                GAIM_STATUS_OFFLINE, NULL, NULL, TRUE, TRUE, FALSE);
        types = g_list_append(types, type);

        return types;
}

static gchar *auth_header(struct sipe_account_data *sip,
                struct sip_auth *auth, const gchar *method, const gchar *target) {
        gchar noncecount[9];
        gchar *response;
        gchar *ret;
        gchar *tmp;
        const char *authdomain;
        const char *authuser;

        authdomain = gaim_account_get_string(sip->account, "authdomain", "");
        authuser = gaim_account_get_string(sip->account, "authuser", sip->username);

        if(!authuser || strlen(authuser) < 1) {
                authuser = sip->username;
        }

        if(auth->type == 1) { /* Digest */
                sprintf(noncecount, "%08d", auth->nc++);
                response = gaim_cipher_http_digest_calculate_response(
                                                        "md5", method, target, NULL, NULL,
                                                        auth->nonce, noncecount, NULL, auth->digest_session_key);
                gaim_debug(GAIM_DEBUG_MISC, "sipe", "response %s\n", response);

                ret = g_strdup_printf("Digest username=\"%s\", realm=\"%s\", nonce=\"%s\", uri=\"%s\", nc=\"%s\", response=\"%s\"\r\n", authuser, auth->realm, auth->nonce, target, noncecount, response);
                g_free(response);
                return ret;
        } else if(auth->type == 2) { /* NTLM */
                if(auth->nc == 3 && auth->nonce) {
                        /* TODO: Don't hardcode "gaim" as the hostname */
                        ret = gaim_ntlm_gen_type3_sipe(authuser, sip->password, "gaim", authdomain, (const guint8 *)auth->nonce, &auth->flags);
                        tmp = g_strdup_printf("NTLM qop=\"auth\", opaque=\"%s\", realm=\"%s\", targetname=\"%s\", gssapi-data=\"%s\"\r\n", auth->opaque, auth->realm, auth->target, ret);
                        g_free(ret);
                        return tmp;
                }
                tmp = g_strdup_printf("NTLM qop=\"auth\", realm=\"%s\", targetname=\"%s\", gssapi-data=\"\"\r\n", auth->realm, auth->target);
                return tmp;
        }

        sprintf(noncecount, "%08d", auth->nc++);
        response = gaim_cipher_http_digest_calculate_response(
                                                "md5", method, target, NULL, NULL,
                                                auth->nonce, noncecount, NULL, auth->digest_session_key);
        gaim_debug(GAIM_DEBUG_MISC, "sipe", "response %s\n", response);

        ret = g_strdup_printf("Digest username=\"%s\", realm=\"%s\", nonce=\"%s\", uri=\"%s\", nc=\"%s\", response=\"%s\"\r\n", authuser, auth->realm, auth->nonce, target, noncecount, response);
        g_free(response);
        return ret;
}

static char *parse_attribute(const char *attrname, const char *source) {
        const char *tmp, *tmp2;
        char *retval = NULL;
        int len = strlen(attrname);

        if(!strncmp(source, attrname, len)) {
                tmp = source + len;
                tmp2 = g_strstr_len(tmp, strlen(tmp), "\"");
                if(tmp2)
                        retval = g_strndup(tmp, tmp2 - tmp);
                else
                        retval = g_strdup(tmp);
        }

        return retval;
}

static void fill_auth(struct sipe_account_data *sip, gchar *hdr, struct sip_auth *auth) {
        int i = 0;
        const char *authuser;
        char *tmp;
        gchar **parts;

        authuser = gaim_account_get_string(sip->account, "authuser", sip->username);

        if(!authuser || strlen(authuser) < 1) {
                authuser = sip->username;
        }

        if(!hdr) {
                gaim_debug_error("sipe", "fill_auth: hdr==NULL\n");
                return;
        }

        if(!g_strncasecmp(hdr, "NTLM", 4)) {
                gaim_debug_info("sipe", "found NTLM\n");
                auth->type = 2;
                parts = g_strsplit(hdr+5, "\", ", 0);
                i = 0;
                while(parts[i]) {
                        gaim_debug_info("sipe", "parts[i] %s\n", parts[i]);
                        if((tmp = parse_attribute("gssapi-data=\"", parts[i]))) {
                                auth->nonce = g_memdup(gaim_ntlm_parse_type2_sipe(tmp, &auth->flags), 8);
                                g_free(tmp);
                        }
                        if((tmp = parse_attribute("targetname=\"",
                                        parts[i]))) {
                                auth->target = tmp;
                        }
                        else if((tmp = parse_attribute("realm=\"",
                                        parts[i]))) {
                                auth->realm = tmp;
                        }
                        else if((tmp = parse_attribute("opaque=\"", parts[i]))) {
                                auth->opaque = tmp;
                        }
                        i++;
                }
                g_strfreev(parts);
                auth->nc = 1;
                if(!strstr(hdr, "gssapi-data")) {
                        auth->nc = 1;
                } else {
                        auth->nc = 3;
                }
                return;
        }

        auth->type = 1;
        parts = g_strsplit(hdr, " ", 0);
        while(parts[i]) {
                if((tmp = parse_attribute("nonce=\"", parts[i]))) {
                        auth->nonce = tmp;
                }
                else if((tmp = parse_attribute("realm=\"", parts[i]))) {
                        auth->realm = tmp;
                }
                i++;
        }
        g_strfreev(parts);

        gaim_debug(GAIM_DEBUG_MISC, "sipe", "nonce: %s realm: %s\n", auth->nonce ? auth->nonce : "(null)", auth->realm ? auth->realm : "(null)");
        if(auth->realm) {
                auth->digest_session_key = gaim_cipher_http_digest_calculate_session_key(
                                "md5", authuser, auth->realm, sip->password, auth->nonce, NULL);

                auth->nc = 1;
        }
}

static void sipe_canwrite_cb(gpointer data, gint source, GaimInputCondition cond) {
        GaimConnection *gc = data;
        struct sipe_account_data *sip = gc->proto_data;
        gsize max_write;
        gssize written;

        max_write = gaim_circ_buffer_get_max_read(sip->txbuf);

        if(max_write == 0) {
                gaim_input_remove(sip->tx_handler);
                sip->tx_handler = 0;
                return;
        }

        written = write(sip->fd, sip->txbuf->outptr, max_write);

        if(written < 0 && errno == EAGAIN)
                written = 0;
        else if(written <= 0) {
                /*TODO: do we really want to disconnect on a failure to write?*/
                gaim_connection_error(gc, _("Could not write"));
                return;
        }

        gaim_circ_buffer_mark_read(sip->txbuf, written);
}

static void sipe_canwrite_cb_ssl(gpointer data, PurpleSslConnection *gsc, GaimInputCondition cond) {
        GaimConnection *gc = data;
        struct sipe_account_data *sip = gc->proto_data;
        gsize max_write;
        gssize written;

        max_write = gaim_circ_buffer_get_max_read(sip->txbuf);

        if(max_write == 0) {
                gaim_input_remove(sip->tx_handler);
                sip->tx_handler = 0;
                return;
        }

        written = purple_ssl_write(sip->gsc, sip->txbuf->outptr, max_write);

        if(written < 0 && errno == EAGAIN)
                written = 0;
        else if(written <= 0) {
                /*TODO: do we really want to disconnect on a failure to write?*/
                gaim_connection_error(gc, _("Could not write"));
                return;
        }

        gaim_circ_buffer_mark_read(sip->txbuf, written);
}

static void sipe_input_cb(gpointer data, gint source, GaimInputCondition cond);

static void send_later_cb(gpointer data, gint source, const gchar *error) {
        GaimConnection *gc = data;
        struct sipe_account_data *sip;
        struct sip_connection *conn;

        if (!GAIM_CONNECTION_IS_VALID(gc))
        {
                if (source >= 0)
                        close(source);
                return;
        }

        if(source < 0) {
                gaim_connection_error(gc, _("Could not connect"));
                return;
        }

        sip = gc->proto_data;
        sip->fd = source;
        sip->connecting = FALSE;

        sipe_canwrite_cb(gc, sip->fd, GAIM_INPUT_WRITE);

        /* If there is more to write now, we need to register a handler */
        if(sip->txbuf->bufused > 0)
                sip->tx_handler = gaim_input_add(sip->fd, GAIM_INPUT_WRITE,
                        sipe_canwrite_cb, gc);

        conn = connection_create(sip, source);
        conn->inputhandler = gaim_input_add(sip->fd, GAIM_INPUT_READ, sipe_input_cb, gc);
}

static void send_later_cb_ssl(gpointer data, PurpleSslConnection *gsc, GaimInputCondition cond) {
        GaimConnection *gc = data;
        struct sipe_account_data *sip;
        struct sip_connection *conn;

        if (!GAIM_CONNECTION_IS_VALID(gc))
        {
                   purple_ssl_close(gsc);
                return;
        }

        sip = gc->proto_data;
        sip->fd = gsc->fd;
        sip->connecting = FALSE;

        sipe_canwrite_cb_ssl(gc, gsc, GAIM_INPUT_WRITE);

        /* If there is more to write now, we need to register a handler */
        if(sip->txbuf->bufused > 0)
                purple_ssl_input_add(gsc, sipe_canwrite_cb_ssl, gc);

        conn = connection_create(sip, gsc->fd);
        purple_ssl_input_add(sip->gsc, sipe_input_cb_ssl, gc);
}


static void sendlater(GaimConnection *gc, const char *buf) {
        struct sipe_account_data *sip = gc->proto_data;

        if(!sip->connecting) {
                gaim_debug_info("sipe", "connecting to %s port %d\n", sip->realhostname ? sip->realhostname : "{NULL}", sip->realport);
                if(sip->use_ssl){
                         sip->gsc = purple_ssl_connect(sip->account,sip->realhostname, sip->realport, send_later_cb_ssl, sipe_ssl_connect_failure, sip->gc);      
                }
                else{
                        if(gaim_proxy_connect(gc, sip->account, sip->realhostname, sip->realport, send_later_cb, gc) == NULL) {
                                gaim_connection_error(gc, _("Couldn't create socket"));
                        }
                 }
                sip->connecting = TRUE;
        }

        if(gaim_circ_buffer_get_max_read(sip->txbuf) > 0)
                gaim_circ_buffer_append(sip->txbuf, "\r\n", 2);

        gaim_circ_buffer_append(sip->txbuf, buf, strlen(buf));
}

static void sendout_pkt(GaimConnection *gc, const char *buf) {
        struct sipe_account_data *sip = gc->proto_data;
        time_t currtime = time(NULL);
        int writelen = strlen(buf);

        gaim_debug(GAIM_DEBUG_MISC, "sipe", "\n\nsending - %s\n######\n%s\n######\n\n", ctime(&currtime), buf);
        if(sip->udp) {
                if(sendto(sip->fd, buf, writelen, 0, (struct sockaddr*)&sip->serveraddr, sizeof(struct sockaddr_in)) < writelen) {
                        gaim_debug_info("sipe", "could not send packet\n");
                }
        } else {
                int ret;
                if(sip->fd < 0) {
                        sendlater(gc, buf);
                        return;
                }

                if(sip->tx_handler) {
                        ret = -1;
                        errno = EAGAIN;
                } else{
                  if(sip->gsc){
                        ret = purple_ssl_write(sip->gsc, buf, writelen);
                  }else{  
                        ret = write(sip->fd, buf, writelen);
                  }
               }

                if (ret < 0 && errno == EAGAIN)
                        ret = 0;
                else if(ret <= 0) { /* XXX: When does this happen legitimately? */
                        sendlater(gc, buf);
                        return;
                }

                if (ret < writelen) {
                        if(!sip->tx_handler){
                                if(sip->gsc){
                                     purple_ssl_input_add(sip->gsc, sipe_canwrite_cb_ssl, gc);
                                }
                                else{ 
                                        sip->tx_handler = gaim_input_add(sip->fd,
                                        GAIM_INPUT_WRITE, sipe_canwrite_cb,
                                        gc);
                                 }
                        }

                        /* XXX: is it OK to do this? You might get part of a request sent
                           with part of another. */
                        if(sip->txbuf->bufused > 0)
                                gaim_circ_buffer_append(sip->txbuf, "\r\n", 2);

                        gaim_circ_buffer_append(sip->txbuf, buf + ret,
                                writelen - ret);
                }
        }
}

static int sipe_send_raw(GaimConnection *gc, const char *buf, int len)
{
        sendout_pkt(gc, buf);
        return len;
}

static void sendout_sipmsg(struct sipe_account_data *sip, struct sipmsg *msg) {
        GSList *tmp = msg->headers;
        gchar *name;
        gchar *value;
        GString *outstr = g_string_new("");
        g_string_append_printf(outstr, "%s %s SIP/2.0\r\n", msg->method, msg->target);
        while(tmp) {
                name = ((struct siphdrelement*) (tmp->data))->name;
                value = ((struct siphdrelement*) (tmp->data))->value;
                g_string_append_printf(outstr, "%s: %s\r\n", name, value);
                tmp = g_slist_next(tmp);
        }
        g_string_append_printf(outstr, "\r\n%s", msg->body ? msg->body : "");
        sendout_pkt(sip->gc, outstr->str);
        g_string_free(outstr, TRUE);
}

static void send_sip_response(GaimConnection *gc, struct sipmsg *msg, int code,
                const char *text, const char *body) {
        GSList *tmp = msg->headers;
        gchar *name;
        gchar *value;
        GString *outstr = g_string_new("");

        /* When sending the acknowlegements and errors, the content length from the original
           message is still here, but there is no body; we need to make sure we're sending the
           correct content length */
        sipmsg_remove_header(msg, "Content-Length");
        if(body) {
                gchar len[12];
                sprintf(len, "%" G_GSIZE_FORMAT , strlen(body));
                sipmsg_add_header(msg, "Content-Length", len);
        }
        else
                sipmsg_add_header(msg, "Content-Length", "0");
        g_string_append_printf(outstr, "SIP/2.0 %d %s\r\n", code, text);
        while(tmp) {
                name = ((struct siphdrelement*) (tmp->data))->name;
                value = ((struct siphdrelement*) (tmp->data))->value;

                g_string_append_printf(outstr, "%s: %s\r\n", name, value);
                tmp = g_slist_next(tmp);
        }
        g_string_append_printf(outstr, "\r\n%s", body ? body : "");
        sendout_pkt(gc, outstr->str);
        g_string_free(outstr, TRUE);
}

static void transactions_remove(struct sipe_account_data *sip, struct transaction *trans) {
        if(trans->msg) sipmsg_free(trans->msg);
        sip->transactions = g_slist_remove(sip->transactions, trans);
        g_free(trans);
}

static void transactions_add_buf(struct sipe_account_data *sip, const gchar *buf, void *callback) {
        struct transaction *trans = g_new0(struct transaction, 1);
        trans->time = time(NULL);
        trans->msg = sipmsg_parse_msg(buf);
        trans->cseq = sipmsg_find_header(trans->msg, "CSeq");
        trans->callback = callback;
        sip->transactions = g_slist_append(sip->transactions, trans);
}

static struct transaction *transactions_find(struct sipe_account_data *sip, struct sipmsg *msg) {
        struct transaction *trans;
        GSList *transactions = sip->transactions;
        gchar *cseq = sipmsg_find_header(msg, "CSeq");

        while(transactions) {
                trans = transactions->data;
                if(!strcmp(trans->cseq, cseq)) {
                        return trans;
                }
                transactions = transactions->next;
        }

        return NULL;
}

static void send_sip_request(GaimConnection *gc, const gchar *method,
                const gchar *url, const gchar *to, const gchar *addheaders,
                const gchar *body, struct sip_dialog *dialog, TransCallback tc) {
        struct sipe_account_data *sip = gc->proto_data;
        char *callid = dialog ? g_strdup(dialog->callid) : gencallid();
        char *auth = NULL;
        const char *addh = "";
        gchar *branch = genbranch();
        gchar *tag = NULL;
        char *buf;

        if(!strcmp(method, "REGISTER")) {
                if(sip->regcallid) {
                        g_free(callid);
                        callid = g_strdup(sip->regcallid);
                }
                else sip->regcallid = g_strdup(callid);
        }

        if(addheaders) addh = addheaders;
        if(sip->registrar.type && !strcmp(method, "REGISTER")) {
                buf = auth_header(sip, &sip->registrar, method, url);
                auth = g_strdup_printf("Authorization: %s", buf);
                g_free(buf);
                gaim_debug(GAIM_DEBUG_MISC, "sipe", "1 header %s", auth);
        }
        
        if(!strcmp(method,"SUBSCRIBE") || !strcmp(method,"SERVICE") || !strcmp(method,"MESSAGE") || !strcmp(method,"INVITE") || !strcmp(method,"NOTIFY")) {
                 buf = g_strdup_printf("NTLM qop=\"auth\", realm=\"%s\", targetname=\"%s\", gssapi-data=\"\"\r\n", sip->registrar.realm, sip->registrar.target);
                auth = g_strdup_printf("Proxy-Authorization: %s", buf);
                gaim_debug(GAIM_DEBUG_MISC, "sipe", "3 header %s", auth);
                g_free(buf);
        }

        if (!dialog)
                tag = gentag();

        buf = g_strdup_printf("%s %s SIP/2.0\r\n"
                        "Via: SIP/2.0/%s %s:%d;branch=%s\r\n"
                        /* Don't know what epid is, but LCS wants it */
                        "From: <sip:%s>;tag=%s;epid=1234567890\r\n"
                        "To: <%s>%s%s\r\n"
                        "Max-Forwards: 10\r\n"
                        "CSeq: %d %s\r\n"
                        "User-Agent: Gaim/" VERSION "\r\n"
                        "Call-ID: %s\r\n"
                        "%s%s"
                        "Content-Length: %" G_GSIZE_FORMAT "\r\n\r\n%s",
                        method,
                        url,
                        sip->udp ? "UDP" : "TCP",
                        sipe_network_get_local_system_ip(),
                        sip->listenport,
                        branch,
                        sip->username,
                        dialog ? dialog->ourtag : tag,
                        to,
                        dialog ? ";tag=" : "",
                        dialog ? dialog->theirtag : "",
                        ++sip->cseq,
                        method,
                        callid,
                        auth ? auth : "",
                        addh,
                        strlen(body),
                        body);

        g_free(tag);
        g_free(auth);
        g_free(branch);
        g_free(callid);

        /* add to ongoing transactions */

        transactions_add_buf(sip, buf, tc);

        sendout_pkt(gc, buf);

        g_free(buf);
}

static char *get_contact_register(struct sipe_account_data  *sip) {
        return g_strdup_printf("<sip:%s:%d;transport=%s>;methods=\"INVITE, MESSAGE, INFO, SUBSCRIBE, BYE, CANCEL, NOTIFY, ACK, BENOTIFY\";proxy=replace", sipe_network_get_local_system_ip(),sip->listenport,  sip->udp ? "udp" : "tcp");
}

static char *get_contact(struct sipe_account_data  *sip) {
        //return g_strdup_printf("<sip:%s@%s:%d;maddr=%s;transport=%s>;proxy=replace", sip->username, sip->servername, sip->listenport, sipe_network_get_local_system_ip() , sip->udp ? "udp" : "tcp");
        return g_strdup_printf("<sip:%s:%d;maddr=%s;transport=%s>;proxy=replace", sip->username, sip->listenport, sipe_network_get_local_system_ip() , sip->udp ? "udp" : "tcp"); 
}

static void do_register_exp(struct sipe_account_data *sip, int expire) {
        char *uri = g_strdup_printf("sip:%s", sip->servername);
        char *to = g_strdup_printf("sip:%s", sip->username);
        char *contact = get_contact_register(sip);
        //char *hdr = g_strdup_printf("Contact: %s\r\nExpires: %d\r\n", contact, expire);
       // char *hdr = g_strdup_printf("Contact: %s\r\nEvent: registration\r\nAllow-Events: presence\r\nms-keep-alive: UAC;hop-hop=yes\r\nExpires: %d\r\n", contact,expire);
        //char *hdr = g_strdup_printf("Contact: %s\r\nSupported: com.microsoft.msrtc.presence, adhoclist\r\nms-keep-alive: UAC;hop-hop=yes\r\nEvent: registration\r\nAllow-Events: presence\r\n", contact);
        char *hdr = g_strdup_printf("Contact: %s\r\nEvent: registration\r\nAllow-Events: presence\r\nms-keep-alive: UAC;hop-hop=yes\r\nExpires: %d\r\n", contact,expire);
        g_free(contact);

        sip->registerstatus = 1;

        if(expire) {
                sip->reregister = time(NULL) + expire - 50;
        } else {
                sip->reregister = time(NULL) + 600;
        }

        send_sip_request(sip->gc, "REGISTER", uri, to, hdr, "", NULL,
                process_register_response);

        g_free(hdr);
        g_free(uri);
        g_free(to);
}

static void do_register(struct sipe_account_data *sip) {
        do_register_exp(sip, sip->registerexpire);
}

static gchar *parse_from(const gchar *hdr) {
        gchar *from;
        const gchar *tmp, *tmp2 = hdr;

        if(!hdr) return NULL;
        gaim_debug_info("sipe", "parsing address out of %s\n", hdr);
        tmp = strchr(hdr, '<');

        /* i hate the different SIP UA behaviours... */
        if(tmp) { /* sip address in <...> */
                tmp2 = tmp + 1;
                tmp = strchr(tmp2, '>');
                if(tmp) {
                        from = g_strndup(tmp2, tmp - tmp2);
                } else {
                        gaim_debug_info("sipe", "found < without > in From\n");
                        return NULL;
                }
        } else {
                tmp = strchr(tmp2, ';');
                if(tmp) {
                        from = g_strndup(tmp2, tmp - tmp2);
                } else {
                        from = g_strdup(tmp2);
                }
        }
        gaim_debug_info("sipe", "got %s\n", from);
        return from;
}

static gboolean process_subscribe_response(struct sipe_account_data *sip, struct sipmsg *msg, struct transaction *tc) {
        gchar *to;

        if(msg->response == 200 || msg->response == 202) {
                gaim_debug_info("sipe", "Devolvio un response %d\n", msg->response);
                return TRUE;
        }

        to = parse_from(sipmsg_find_header(tc->msg, "To")); /* cant be NULL since it is our own msg */

        /* we can not subscribe -> user is offline (TODO unknown status?) */

        gaim_prpl_got_user_status(sip->account, to, "offline", NULL);
        g_free(to);
        return TRUE;
}

static void sipe_subscribe(struct sipe_account_data *sip, struct sipe_buddy *buddy) {
        gchar *contact ="Accept: application/pidf+xml, application/xpidf+xml\r\nEvent: presence\r\n";
        gchar *to;
        gchar *tmp;
       
        if(strstr(buddy->name, "sip:"))
                to = g_strdup(buddy->name);
        else
                to = g_strdup_printf("sip:%s", buddy->name);

        tmp = get_contact(sip);
        contact = g_strdup_printf("%sContact: %s\r\n", contact, tmp);
        g_free(tmp);

        /* subscribe to buddy presence
         * we dont need to know the status so we do not need a callback */

        send_sip_request(sip->gc, "SUBSCRIBE", to, to, contact, "", NULL,
                process_subscribe_response);

        g_free(to);
        g_free(contact);

        /* resubscribe before subscription expires */
        /* add some jitter */
        buddy->resubscribe = time(NULL)+1140+(rand()%50);
}

static gboolean sipe_add_lcs_contacts(struct sipe_account_data *sip, struct sipmsg *msg, struct transaction *tc) {
        gchar *tmp;
        xmlnode *item, *group, *isc;
        const char *name_group, *group_id;
        GaimBuddy *b;
        GaimGroup *g = NULL;
        gchar **parts;
        gchar *apn;
        int ng = 0, i;
        struct sipe_buddy *bs;
        struct sipe_group *gr;
        int len = msg->bodylen;

        //Reserved to max 10 groups. ToDO be dynamic
        gr = g_new0(struct sipe_group, 10);

        tmp = sipmsg_find_header(msg, "Event");
        if(tmp && !strncmp(tmp, "vnd-microsoft-roaming-contacts", 30)){

                gaim_debug_info("sipe", "sipe_add_lcs_contacts->%s-%d\n", msg->body, len);
                /*Convert the contact from XML to Gaim Buddies*/
                isc = xmlnode_from_str(msg->body, len);

                /* ToDo. Find for all groups */
                //if ((group = xmlnode_get_child(isc, "group"))) {
                for(group = xmlnode_get_child(isc, "group"); group; group = xmlnode_get_next_twin(group)) {
                        name_group = xmlnode_get_attrib(group, "name");
                        group_id = xmlnode_get_attrib(group, "id");
                        if(!strncmp(name_group, "~", 1)){
                           name_group=g_strdup("General");
                        }
                        gr[ng].name_group = g_strdup(name_group);
                        gr[ng].id = g_strdup(group_id); 
                        gaim_debug_info("sipe", "name_group->%s\n", name_group);
                        g = gaim_find_group(name_group);
                        if(!g) {
                                g = gaim_group_new(name_group);
                                gaim_blist_add_group(g, NULL);
                        }
                        if (!g) {
                           g = gaim_find_group("General");
                                if(!g) {
                                        g = gaim_group_new("General");
                                        gaim_blist_add_group(g, NULL);
                                }
                        }
                        gr[ng].g = g;
                        ng++;
                }
                for(i = 0; i < ng;i++){
                    gaim_debug_info("sipe", "id->%s\n", gr[i].id);
                    gaim_debug_info("sipe", "id->%s\n", gr[i].name_group); 
                } 
                 
                       for(item = xmlnode_get_child(isc, "contact"); item; item = xmlnode_get_next_twin(item))
                        {
                                const char *uri, *name, *groups;
                                char *buddy_name;
                                i = 0; 
                                uri = xmlnode_get_attrib(item, "uri");
                                name = xmlnode_get_attrib(item, "name");
                                groups = xmlnode_get_attrib(item, "groups");
                                parts = g_strsplit(groups, " ", 0); 
                                gaim_debug_info("sipe", "URI->%s,Groups->%s\n", uri, groups);

                                while(parts[i]) {
                                        gaim_debug_info("sipe", "Groups->parts[i] %s\n", parts[i]);
                                        if(!strcmp(gr[i].id,parts[i])){
                                         gaim_debug_info("sipe", "Found Groups->gr[i].id(%s),gr[i].name_group (%s)\n",gr[i].id,gr[i].name_group);
                                        
                                buddy_name = g_strdup_printf("sip:%s", uri);

                                //b = gaim_find_buddy(sip->account, buddy_name); 
                                b = gaim_find_buddy_in_group(sip->account, buddy_name, gr[i].g);
                                if(!b){
                                        b = gaim_buddy_new(sip->account, buddy_name, uri);
                                }
                                g_free(buddy_name);

                                //sipe_add_buddy(sip->gc, b , gr[i].g);  
                                gaim_blist_add_buddy(b, NULL, gr[i].g, NULL);
                                gaim_blist_alias_buddy(b, uri);
                                bs = g_new0(struct sipe_buddy, 1);
                                bs->name = g_strdup(b->name);
                                g_hash_table_insert(sip->buddies, bs->name, bs);
                                }
                              i++;
                             } 
                        }
             xmlnode_free(isc); 
        } 
        return 0;
}

static void sipe_subscribe_buddylist(struct sipe_account_data *sip) {
        gchar *contact = "Event: vnd-microsoft-roaming-contacts\r\nAccept: application/vnd-microsoft-roaming-contacts+xml\r\nSupported: com.microsoft.autoextend\r\nSupported: ms-benotify\r\nProxy-Require: ms-benotify\r\nSupported: ms-piggyback-first-notify\r\n";
        gchar *to;
        gchar *tmp;
        //to = g_strdup_printf("sip:%s@%s", sip->username, sip->servername);
        to = g_strdup_printf("sip:%s", sip->username); 

        tmp = get_contact(sip);
        contact = g_strdup_printf("%sContact: %s\r\n", contact, tmp);
        g_free(tmp);
        send_sip_request(sip->gc, "SUBSCRIBE", to, to, contact, "", NULL, sipe_add_lcs_contacts);
        g_free(to);
        g_free(contact);
}

static void sipe_invite(struct sipe_account_data *sip, struct sipe_buddy *buddy) {
        gchar *contact = "Supported: com.microsoft.rtc-multiparty\r\n";
        gchar *to;
        gchar *tmp;
        //to = g_strdup_printf("sip:%s@%s", sip->username, sip->servername);

        if(strstr(buddy->name, "sip:"))
                to = g_strdup(buddy->name);
        else
                to = g_strdup_printf("sip:%s", buddy->name);

        tmp = get_contact(sip);
        contact = g_strdup_printf("%sContact: %s\r\n", contact, tmp);
        g_free(tmp);

        tmp = g_strdup_printf("Roster-Manager:sip:%s@%s\r\nEndPoints: <sip:%s@%s>, <sip:%s@%s>", sip->username, sip->servername,sip->username, sip->servername, buddy->name, sip->servername);
        contact = g_strdup_printf("%sContact: %s\r\n", contact, tmp);
        g_free(tmp);
 
        send_sip_request(sip->gc, "INVITE", to, to, contact, "", NULL, NULL);

        g_free(to);
        g_free(contact);
}

static void sipe_buddy_resub(char *name, struct sipe_buddy *buddy, struct sipe_account_data *sip) {
        time_t curtime = time(NULL);
        gaim_debug_info("sipe", "buddy resub\n");
        if(buddy->resubscribe < curtime) {
                gaim_debug(GAIM_DEBUG_MISC, "sipe", "sipe_buddy_resub %s\n", name);
                sipe_subscribe(sip, buddy);
        }
}

static gboolean resend_timeout(struct sipe_account_data *sip) {
        GSList *tmp = sip->transactions;
        time_t currtime = time(NULL);
        while(tmp) {
                struct transaction *trans = tmp->data;
                tmp = tmp->next;
                gaim_debug_info("sipe", "have open transaction age: %d\n", currtime- trans->time);
                if((currtime - trans->time > 5) && trans->retries >= 1) {
                        /* TODO 408 */
                } else {
                        if((currtime - trans->time > 2) && trans->retries == 0) {
                                trans->retries++;
                                sendout_sipmsg(sip, trans->msg);
                        }
                }
        }
        return TRUE;
}

static gboolean subscribe_timeout(struct sipe_account_data *sip) {
        GSList *tmp;
        time_t curtime = time(NULL);
        /* register again if first registration expires */
        if(sip->reregister < curtime) {
                do_register(sip);
        }
        /* check for every subscription if we need to resubscribe */
        //Fixxxer we need resub?
        g_hash_table_foreach(sip->buddies, (GHFunc)sipe_buddy_resub, (gpointer)sip);

        /* remove a timed out suscriber */

        tmp = sip->watcher;
        while(tmp) {
                struct sipe_watcher *watcher = tmp->data;
                if(watcher->expire < curtime) {
                        watcher_remove(sip, watcher->name);
                        tmp = sip->watcher;
                }
                if(tmp) tmp = tmp->next;
        }

        return TRUE;
}

static void sipe_send_message(struct sipe_account_data *sip, const char *to, const char *msg, const char *type) {
        gchar *hdr;
        gchar *fullto;
        gchar *tmp;
        if(strncmp("sip:", to, 4)) {
                fullto = g_strdup_printf("sip:%s", to);
        } else {
                fullto = g_strdup(to);
        }
        if(type) {
                hdr = g_strdup_printf("Content-Type: %s\r\n", type);
        } else {
                hdr = g_strdup("Content-Type: text/plain; charset=UTF-8\r\n");
        }
        tmp = get_contact(sip);
        hdr = g_strdup_printf("Contact: %s\r\n%s", tmp, hdr);
        g_free(tmp);

        send_sip_request(sip->gc, "MESSAGE", fullto, fullto, hdr, msg, NULL, NULL);
        g_free(hdr);
        g_free(fullto);
}

static int sipe_im_send(GaimConnection *gc, const char *who, const char *what, GaimMessageFlags flags) {
        struct sipe_account_data *sip = gc->proto_data;
        char *to = g_strdup(who);
        char *text = gaim_unescape_html(what);
        sipe_send_message(sip, to, text, NULL);
        g_free(to);
        g_free(text);
        return 1;
}

static void process_incoming_message(struct sipe_account_data *sip, struct sipmsg *msg) {
        gchar *from;
        gchar *contenttype;
        gboolean found = FALSE;

        from = parse_from(sipmsg_find_header(msg, "From"));

        if(!from) return;

        gaim_debug_info("sipe", "got message from %s: %s\n", from, msg->body);

        contenttype = sipmsg_find_header(msg, "Content-Type");
        if(!contenttype || !strncmp(contenttype, "text/plain", 10) || !strncmp(contenttype, "text/html", 9)) {
                serv_got_im(sip->gc, from, msg->body, 0, time(NULL));
                send_sip_response(sip->gc, msg, 200, "OK", NULL);
                found = TRUE;
        }
        if(!strncmp(contenttype, "application/im-iscomposing+xml", 30)) {
                xmlnode *isc = xmlnode_from_str(msg->body, msg->bodylen);
                xmlnode *state;
                gchar *statedata;

                if(!isc) {
                        gaim_debug_info("sipe", "process_incoming_message: can not parse iscomposing\n");
                        return;
                }

                state = xmlnode_get_child(isc, "state");

                if(!state) {
                        gaim_debug_info("sipe", "process_incoming_message: no state found\n");
                        xmlnode_free(isc);
                        return;
                }

                statedata = xmlnode_get_data(state);
                if(statedata) {
                        if(strstr(statedata, "active")) serv_got_typing(sip->gc, from, 0, GAIM_TYPING);
                        else serv_got_typing_stopped(sip->gc, from);

                        g_free(statedata);
                }
                xmlnode_free(isc);
                send_sip_response(sip->gc, msg, 200, "OK", NULL);
                found = TRUE;
        }
        if(!found) {
                gaim_debug_info("sipe", "got unknown mime-type");
                send_sip_response(sip->gc, msg, 415, "Unsupported media type", NULL);
        }
        g_free(from);
}


gboolean process_register_response(struct sipe_account_data *sip, struct sipmsg *msg, struct transaction *tc) {
        gchar *tmp;
        gaim_debug(GAIM_DEBUG_MISC, "sipe", "in process register response response: %d\n", msg->response);
        switch (msg->response) {
                case 200:
                        sip->registerstatus = 3;
                        gaim_connection_set_state(sip->gc, GAIM_CONNECTED);

                       // if(sip->registerstatus < 3) { /* registered */
                                
                      //} 

                        /* get buddies from blist */
                        sipe_get_buddies(sip->gc);

                        subscribe_timeout(sip);

                        tmp = sipmsg_find_header(msg, "Allow-Events");
                        if(tmp && strstr(tmp, "vnd-microsoft-provisioning")){
                                sipe_subscribe_buddylist(sip);
                        }

                        break;
                case 401:
                        if(sip->registerstatus != 2) {
                                gaim_debug_info("sipe", "REGISTER retries %d\n", sip->registrar.retries);
                                if(sip->registrar.retries > 3) {
                                        sip->gc->wants_to_die = TRUE;
                                        gaim_connection_error(sip->gc, _("Wrong Password"));
                                        return TRUE;
                                }
                                tmp = sipmsg_find_header(msg, "WWW-Authenticate");
                                fill_auth(sip, tmp, &sip->registrar);
                                sip->registerstatus = 2;
                                do_register(sip);
                        }
                        break;
                }
        return TRUE;
}

static void process_incoming_notify(struct sipe_account_data *sip, struct sipmsg *msg) {
        gchar *from;
        gchar *fromhdr;
        gchar *tmp2;
        xmlnode *pidf;
        xmlnode *basicstatus = NULL, *tuple, *status;
        gboolean isonline = FALSE;

        fromhdr = sipmsg_find_header(msg, "From");
        from = parse_from(fromhdr);
        if(!from) return;

        pidf = xmlnode_from_str(msg->body, msg->bodylen);

        if(!pidf) {
                gaim_debug_info("sipe", "process_incoming_notify: no parseable pidf\n");
                return;
        }

        gaim_debug_info("sipe", "process_incoming_notify: body(%s)\n",msg->body);

        if ((tuple = xmlnode_get_child(pidf, "tuple")))
                if ((status = xmlnode_get_child(tuple, "status")))
                        basicstatus = xmlnode_get_child(status, "basic");

        if(!basicstatus) {
                gaim_debug_info("sipe", "process_incoming_notify: no basic found\n");
                xmlnode_free(pidf);
                return;
        }

        tmp2 = xmlnode_get_data(basicstatus);

        gaim_debug_info("sipe", "process_incoming_notify: basic-status(%s)\n",tmp2);


        if(!tmp2) {
                gaim_debug_info("sipe", "process_incoming_notify: no basic data found\n");
                xmlnode_free(pidf);
                return;
        }

        if(strstr(tmp2, "open")) {
                isonline = TRUE;
        }

        g_free(tmp2);

        if(isonline) gaim_prpl_got_user_status(sip->account, from, "available", NULL);
        else gaim_prpl_got_user_status(sip->account, from, "offline", NULL);

        xmlnode_free(pidf);

        g_free(from);
        send_sip_response(sip->gc, msg, 200, "OK", NULL);
}

static gchar *find_tag(const gchar *hdr) {
        const gchar *tmp = strstr(hdr, ";tag="), *tmp2;

        if(!tmp) return NULL;
        tmp += 5;
        if((tmp2 = strchr(tmp, ';'))) {
                return g_strndup(tmp, tmp2 - tmp);
        }
        return g_strdup(tmp);
}

static gchar* gen_xpidf(struct sipe_account_data *sip) {
        gchar *doc = g_strdup_printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
                        "<presence>\n"
                        "<presentity uri=\"sip:%s@%s;method=SUBSCRIBE\"/>\n"
                        "<display name=\"sip:%s@%s\"/>\n"
                        "<atom id=\"1234\">\n"
                        "<address uri=\"sip:%s@%s\">\n"
                        "<status status=\"%s\"/>\n"
                        "</address>\n"
                        "</atom>\n"
                        "</presence>\n",
                        sip->username,
                        sip->servername,
                        sip->username,
                        sip->servername,
                        sip->username,
                        sip->servername,
                        sip->status);
        return doc;
}



static gchar* gen_pidf(struct sipe_account_data *sip) {
         gchar *doc = g_strdup_printf("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
                        "<presence xmlns=\"urn:ietf:params:xml:ns:pidf\" xmlns:ep=\"urn:ietf:params:xml:ns:pidf:status:rpid-status\" xmlns:ci=\"urn:ietf:params:xml:ns:pidf:cipid\" entity=\"sip:%s@%s\">\n"
                        "<tuple id=\"0\">\n"
                        "<status>\n"
                        "<basic>open</basic>\n"
                        "<ep:activities>\n"
                        " <ep:activity>%s</ep:activity>\n"
                        "</ep:activities>"
                        "</status>\n"
                        "</tuple>\n" 
                        "<ci:display-name>FixXxeR</ci:display-name>\n"
                        "</presence>",
                        sip->username,
                        sip->servername,
                        sip->status);
        return doc;
}

static void send_notify(struct sipe_account_data *sip, struct sipe_watcher *watcher) {
        gchar *doc = watcher->needsxpidf ? gen_xpidf(sip) : gen_pidf(sip);
        gchar *hdr = watcher->needsxpidf ? "Event: presence\r\nContent-Type: application/xpidf+xml\r\n" : "Event: presence\r\nContent-Type: application/pidf+xml\r\n";
        send_sip_request(sip->gc, "NOTIFY", watcher->name, watcher->name, hdr, doc, &watcher->dialog, NULL);
        g_free(doc);
}

static gboolean process_service_response(struct sipe_account_data *sip, struct sipmsg *msg, struct transaction *tc) {
        if(msg->response != 200 && msg->response != 408) {
                /* never send again */
                sip->republish = -1;
        }
        return TRUE;
}

static void send_service(struct sipe_account_data *sip) {
        gchar *uri = g_strdup_printf("sip:%s@%s", sip->username, sip->servername);
        gchar *doc = gen_pidf(sip);
        gchar *hdr = g_strdup("Content-Type: application/SOAP+xml\r\n");
        gchar *tmp = get_contact(sip);
        hdr = g_strdup_printf("Contact: %s\r\n%s", tmp, hdr);
        g_free(tmp); 
        send_sip_request(sip->gc, "SERVICE", uri, uri,
                hdr,
                doc, NULL, process_service_response);
        sip->republish = time(NULL) + 500;
        g_free(hdr);
        g_free(uri);
        g_free(doc);
}

static void process_incoming_subscribe(struct sipe_account_data *sip, struct sipmsg *msg) {
        const char *from_hdr = sipmsg_find_header(msg, "From");
        gchar *from = parse_from(from_hdr);
        gchar *theirtag = find_tag(from_hdr);
        gchar *ourtag = find_tag(sipmsg_find_header(msg, "To"));
        gboolean tagadded = FALSE;
        gchar *callid = sipmsg_find_header(msg, "Call-ID");
        gchar *expire = sipmsg_find_header(msg, "Expire");
    //    gchar *ms-received-port =find_received_port(sipmsg_find_header(msg, "Contact"));
        gchar *tmp;
        struct sipe_watcher *watcher = watcher_find(sip, from);
        if(!ourtag) {
                tagadded = TRUE;
                ourtag = gentag();
        }
        if(!watcher) { /* new subscription */
                gchar *acceptheader = sipmsg_find_header(msg, "Accept");
                gboolean needsxpidf = FALSE;
                if(!gaim_privacy_check(sip->account, from)) {
                        send_sip_response(sip->gc, msg, 202, "Ok", NULL);
                        goto privend;
                }
                if(acceptheader) {
                        gchar *tmp = acceptheader;
                        gboolean foundpidf = FALSE;
                        gboolean foundxpidf = FALSE;
                        while(tmp && tmp < acceptheader + strlen(acceptheader)) {
                                gchar *tmp2 = strchr(tmp, ',');
                                if(tmp2) *tmp2 = '\0';
                                if(!strcmp("application/pidf+xml", tmp))
                                        foundpidf = TRUE;
                                if(!strcmp("application/xpidf+xml", tmp))
                                        foundxpidf = TRUE;
                                if(tmp2) {
                                        *tmp2 = ',';
                                        tmp = tmp2;
                                        while(*tmp == ' ') tmp++;
                                } else
                                        tmp = 0;
                        }
                        if(!foundpidf && foundxpidf) needsxpidf = TRUE;
                        g_free(acceptheader);
                }
                watcher = watcher_create(sip, from, callid, ourtag, theirtag, needsxpidf);
        }
        if(tagadded) {
                gchar *to = g_strdup_printf("%s;tag=%s", sipmsg_find_header(msg, "To"), ourtag);
                sipmsg_remove_header(msg, "To");
                sipmsg_add_header(msg, "To", to);
                g_free(to);
        }
        if(expire)
                watcher->expire = time(NULL) + strtol(expire, NULL, 10);
        else
                watcher->expire = time(NULL) + 600;
        //Fixxxer
        sipmsg_remove_header(msg, "Contact");
        tmp = get_contact(sip);
        sipmsg_add_header(msg, "Contact", tmp);
        g_free(tmp);
        gaim_debug_info("sipe", "got subscribe: name %s ourtag %s theirtag %s callid %s\n", watcher->name, watcher->dialog.ourtag, watcher->dialog.theirtag, watcher->dialog.callid);
        send_sip_response(sip->gc, msg, 200, "Ok", NULL);
        send_notify(sip, watcher);
privend:
        g_free(from);
        g_free(theirtag);
        g_free(ourtag);
        g_free(callid);
        g_free(expire);
}

static void process_input_message(struct sipe_account_data *sip, struct sipmsg *msg) {
        gboolean found = FALSE;
        gaim_debug_info("sipe", "msg->response(%d),msg->method(%s)\n",msg->response,msg->method);
        if(msg->response == 0) { /* request */
                if(!strcmp(msg->method, "MESSAGE")) {
                        process_incoming_message(sip, msg);
                        found = TRUE;
                } else if(!strcmp(msg->method, "NOTIFY")) {
                        gaim_debug_info("sipe","send->process_incoming_notify\n");
                        process_incoming_notify(sip, msg);
                        found = TRUE;
                } else if(!strcmp(msg->method, "SUBSCRIBE")) {
                        gaim_debug_info("sipe","send->process_incoming_subscribe\n");
                        process_incoming_subscribe(sip, msg);
                        found = TRUE;
                } else {
                        send_sip_response(sip->gc, msg, 501, "Not implemented", NULL);
                }
        } else { /* response */
                struct transaction *trans = transactions_find(sip, msg);
                if(trans) {
                        if(msg->response == 407) {
                                gchar *resend, *auth, *ptmp;

                                if(sip->proxy.retries > 30) return;
                                sip->proxy.retries++;
                                /* do proxy authentication */

                                ptmp = sipmsg_find_header(msg, "Proxy-Authenticate");

                                fill_auth(sip, ptmp, &sip->proxy);
                                auth = auth_header(sip, &sip->proxy, trans->msg->method, trans->msg->target);
                                sipmsg_remove_header(trans->msg, "Proxy-Authorization");
                                sipmsg_add_header(trans->msg, "Proxy-Authorization", auth);
                                g_free(auth);
                                resend = sipmsg_to_string(trans->msg);
                                /* resend request */
                                sendout_pkt(sip->gc, resend);
                                g_free(resend);
                        } else {
                                if(msg->response == 100) {
                                        /* ignore provisional response */
                                        gaim_debug_info("sipe", "got trying response\n");
                                } else {
                                        sip->proxy.retries = 0;
                                        if(!strcmp(trans->msg->method, "REGISTER")) {
                                                if(msg->response == 401) sip->registrar.retries++;
                                                else sip->registrar.retries = 0;
                                                gaim_debug_info("sipe", "RE-REGISTER\n");
                                        } else {
                                                if(msg->response == 401) {
                                                        gchar *resend, *auth, *ptmp;

                                                        if(sip->registrar.retries > 4) return;
                                                        sip->registrar.retries++;

                                                        ptmp = sipmsg_find_header(msg, "WWW-Authenticate");

                                                        fill_auth(sip, ptmp, &sip->registrar);
                                                        auth = auth_header(sip, &sip->registrar, trans->msg->method, trans->msg->target);
                                                        sipmsg_remove_header(trans->msg, "Proxy-Authorization");
                                                        sipmsg_add_header(trans->msg, "Proxy-Authorization", auth);
                                                        
                                                        //sipmsg_remove_header(trans->msg, "Authorization");
                                                        //sipmsg_add_header(trans->msg, "Authorization", auth);
                                                        g_free(auth);
                                                        resend = sipmsg_to_string(trans->msg);
                                                        /* resend request */
                                                        sendout_pkt(sip->gc, resend);
                                                        g_free(resend);
                                                }
                                        }
                                        if(trans->callback) {
                                                /* call the callback to process response*/
                                                (trans->callback)(sip, msg, trans);
                                        }
                                        transactions_remove(sip, trans);
                                }
                        }
                        found = TRUE;
                } else {
                        gaim_debug(GAIM_DEBUG_MISC, "sipe", "received response to unknown transaction");
                }
        }
        if(!found) {
                gaim_debug(GAIM_DEBUG_MISC, "sipe", "received a unknown sip message with method %s and response %d\n", msg->method, msg->response);
        }
}

static void process_input(struct sipe_account_data *sip, struct sip_connection *conn)
{
        char *cur;
        char *dummy;
        struct sipmsg *msg;
        int restlen;
        cur = conn->inbuf;

        /* according to the RFC remove CRLF at the beginning */
        while(*cur == '\r' || *cur == '\n') {
                cur++;
        }
        if(cur != conn->inbuf) {
                memmove(conn->inbuf, cur, conn->inbufused - (cur - conn->inbuf));
                conn->inbufused = strlen(conn->inbuf);
        }

        /* Received a full Header? */
        if((cur = strstr(conn->inbuf, "\r\n\r\n")) != NULL) {
                time_t currtime = time(NULL);
                cur += 2;
                cur[0] = '\0';
                gaim_debug_info("sipe", "\n\nreceived - %s\n######\n%s\n#######\n\n", ctime(&currtime), conn->inbuf);
                msg = sipmsg_parse_header(conn->inbuf);
                cur[0] = '\r';
                cur += 2;
                restlen = conn->inbufused - (cur - conn->inbuf);
                if(restlen >= msg->bodylen) {
                        dummy = g_malloc(msg->bodylen + 1);
                        memcpy(dummy, cur, msg->bodylen);
                        dummy[msg->bodylen] = '\0';
                        msg->body = dummy;
                        cur += msg->bodylen;
                        memmove(conn->inbuf, cur, conn->inbuflen - (cur - conn->inbuf));
                        conn->inbufused = strlen(conn->inbuf);
                } else {
                        sipmsg_free(msg);
                        return;
                }
                gaim_debug(GAIM_DEBUG_MISC, "sipe", "in process response response: %d\n", msg->response);
                process_input_message(sip, msg);
        } else {
                gaim_debug(GAIM_DEBUG_MISC, "sipe", "received a incomplete sip msg: %s\n", conn->inbuf);
        }
}

static void sipe_udp_process(gpointer data, gint source, GaimInputCondition con) {
        GaimConnection *gc = data;
        struct sipe_account_data *sip = gc->proto_data;
        struct sipmsg *msg;
        int len;
        time_t currtime;

        static char buffer[65536];
        if((len = recv(source, buffer, sizeof(buffer) - 1, 0)) > 0) {
                buffer[len] = '\0';
                gaim_debug_info("sipe", "\n\nreceived - %s\n######\n%s\n#######\n\n", ctime(&currtime), buffer);
                msg = sipmsg_parse_msg(buffer);
                if(msg) process_input_message(sip, msg);
        }
}

static void sipe_input_cb_ssl(gpointer data, PurpleSslConnection *gsc, PurpleInputCondition cond)
{
        PurpleConnection *gc = data;
        struct sipe_account_data *sip = gc->proto_data;
        int len;
        static char buf[4096];

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

        struct sip_connection *conn = connection_find(sip, sip->gsc->fd);
        if(!conn) {
                gaim_debug_error("sipe", "Connection not found!\n");
                return;
        }
      

        if(conn->inbuflen < conn->inbufused + SIMPLE_BUF_INC) {
                conn->inbuflen += SIMPLE_BUF_INC;
                conn->inbuf = g_realloc(conn->inbuf, conn->inbuflen);
        }

        len = purple_ssl_read(gsc, conn->inbuf + conn->inbufused, SIMPLE_BUF_INC - 1);

        if (len < 0 && errno == EAGAIN) {
                /* Try again later */
                return;
        } else if (len < 0) {
                purple_debug_info("sipe", "sipe_input_cb_ssl: read error\n");
                connection_remove(sip, sip->gsc->fd); 
                if(sip->fd == gsc->fd) sip->fd = -1;  
                return;
        } else if (len == 0) {
                purple_connection_error(gc, _("Server has disconnected"));
                connection_remove(sip, sip->gsc->fd);
                if(sip->fd == gsc->fd) sip->fd = -1;
                return;
        }

        conn->inbufused += len;
        conn->inbuf[conn->inbufused] = '\0';

        process_input(sip, conn);
  
}

static void sipe_input_cb(gpointer data, gint source, GaimInputCondition cond)
{
        GaimConnection *gc = data;
        struct sipe_account_data *sip = gc->proto_data;
        int len;
        struct sip_connection *conn = connection_find(sip, source);
        if(!conn) {
                gaim_debug_error("sipe", "Connection not found!\n");
                return;
        }

        if(conn->inbuflen < conn->inbufused + SIMPLE_BUF_INC) {
                conn->inbuflen += SIMPLE_BUF_INC;
                conn->inbuf = g_realloc(conn->inbuf, conn->inbuflen);
        }

        len = read(source, conn->inbuf + conn->inbufused, SIMPLE_BUF_INC - 1);

        if(len < 0 && errno == EAGAIN)
                return;
        else if(len <= 0) {
                gaim_debug_info("sipe", "sipe_input_cb: read error\n");
                connection_remove(sip, source);
                if(sip->fd == source) sip->fd = -1;
                return;
        }

        conn->inbufused += len;
        conn->inbuf[conn->inbufused] = '\0';

        process_input(sip, conn);
}

/* Callback for new connections on incoming TCP port */
static void sipe_newconn_cb(gpointer data, gint source, GaimInputCondition cond) {
        GaimConnection *gc = data;
        struct sipe_account_data *sip = gc->proto_data;
        struct sip_connection *conn;

        int newfd = accept(source, NULL, NULL);

        conn = connection_create(sip, newfd);

        conn->inputhandler = gaim_input_add(newfd, GAIM_INPUT_READ, sipe_input_cb, gc);
}

static void login_cb(gpointer data, gint source, const gchar *error_message) {
        GaimConnection *gc = data;
        struct sipe_account_data *sip;
        struct sip_connection *conn;

        if (!GAIM_CONNECTION_IS_VALID(gc))
        {
                if (source >= 0)
                        close(source);
                return;
        }

        if(source < 0) {
                gaim_connection_error(gc, _("Could not connect"));
                return;
        }

        sip = gc->proto_data;
        sip->fd = source;

        conn = connection_create(sip, source);

        sip->registertimeout = gaim_timeout_add((rand()%100)+10*1000, (GSourceFunc)subscribe_timeout, sip);

        do_register(sip);

        conn->inputhandler = gaim_input_add(sip->fd, GAIM_INPUT_READ, sipe_input_cb, gc);
}

static void login_cb_ssl(gpointer data, PurpleSslConnection *gsc, PurpleInputCondition cond) {
        GaimConnection *gc = data;
        struct sipe_account_data *sip;
        struct sip_connection *conn;

        if (!GAIM_CONNECTION_IS_VALID(gc))
        {
                purple_ssl_close(gsc);
                return;
        }

        sip = gc->proto_data;
        sip->fd = gsc->fd;
        conn = connection_create(sip, sip->fd);

        purple_ssl_input_add(gsc, sipe_input_cb_ssl, gc);
}

static guint sipe_ht_hash_nick(const char *nick) {
        char *lc = g_utf8_strdown(nick, -1);
        guint bucket = g_str_hash(lc);
        g_free(lc);

        return bucket;
}

static gboolean sipe_ht_equals_nick(const char *nick1, const char *nick2) {
        return (gaim_utf8_strcasecmp(nick1, nick2) == 0);
}

static void sipe_udp_host_resolved_listen_cb(int listenfd, gpointer data) {
        struct sipe_account_data *sip = (struct sipe_account_data*) data;

        sip->listen_data = NULL;

        if(listenfd == -1) {
                gaim_connection_error(sip->gc, _("Could not create listen socket"));
                return;
        }

        sip->fd = listenfd;

        sip->listenport = gaim_network_get_port_from_fd(sip->fd);
        sip->listenfd = sip->fd;

        sip->listenpa = gaim_input_add(sip->fd, GAIM_INPUT_READ, sipe_udp_process, sip->gc);

        sip->resendtimeout = gaim_timeout_add(2500, (GSourceFunc) resend_timeout, sip);
        sip->registertimeout = gaim_timeout_add((rand()%100)+10*1000, (GSourceFunc)subscribe_timeout, sip);
        do_register(sip);
}

static void sipe_udp_host_resolved(GSList *hosts, gpointer data, const char *error_message) {
        struct sipe_account_data *sip = (struct sipe_account_data*) data;
        int addr_size;

        sip->query_data = NULL;

        if (!hosts || !hosts->data) {
                gaim_connection_error(sip->gc, _("Couldn't resolve host"));
                return;
        }

        addr_size = GPOINTER_TO_INT(hosts->data);
        hosts = g_slist_remove(hosts, hosts->data);
        memcpy(&(sip->serveraddr), hosts->data, addr_size);
        g_free(hosts->data);
        hosts = g_slist_remove(hosts, hosts->data);
        while(hosts) {
                hosts = g_slist_remove(hosts, hosts->data);
                g_free(hosts->data);
                hosts = g_slist_remove(hosts, hosts->data);
        }

        /* create socket for incoming connections */
        sip->listen_data = gaim_network_listen_range(5060, 5160, SOCK_DGRAM,
                                sipe_udp_host_resolved_listen_cb, sip);
        if (sip->listen_data == NULL) {
                gaim_connection_error(sip->gc, _("Could not create listen socket"));
                return;
        }
}

static void sipe_ssl_connect_failure(PurpleSslConnection *gsc, PurpleSslErrorType error, 
                                     gpointer data)
{
        PurpleConnection *gc = data;
        struct sipe_account_data *sip;

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

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

        switch(error) {
                case PURPLE_SSL_CONNECT_FAILED:
                        purple_connection_error(gc, _("Connection Failed"));
                        break;
                case PURPLE_SSL_HANDSHAKE_FAILED:
                        purple_connection_error(gc, _("SSL Handshake Failed"));
                        break;
        }
}

static void
sipe_tcp_connect_listen_cb(int listenfd, gpointer data) {
        struct sipe_account_data *sip = (struct sipe_account_data*) data;
        GaimProxyConnectData *connect_data;

        sip->listen_data = NULL;

        sip->listenfd = listenfd;
        if(sip->listenfd == -1) {
                gaim_connection_error(sip->gc, _("Could not create listen socket"));
                return;
        }

        gaim_debug_info("sipe", "listenfd: %d\n", sip->listenfd);
        sip->listenport = gaim_network_get_port_from_fd(sip->listenfd);
        sip->listenpa = gaim_input_add(sip->listenfd, GAIM_INPUT_READ,
                        sipe_newconn_cb, sip->gc);
        gaim_debug_info("sipe", "connecting to %s port %d\n",
                        sip->realhostname, sip->realport);
        /* open tcp connection to the server */ 
        if(sip->use_ssl){
                sip->gsc = purple_ssl_connect(sip->account,sip->realhostname, sip->realport, login_cb_ssl, sipe_ssl_connect_failure, sip->gc);
        }
        else{
          connect_data = gaim_proxy_connect(sip->gc, sip->account, sip->realhostname,
                        sip->realport, login_cb, sip->gc);
        } 
        if(connect_data == NULL) {
                gaim_connection_error(sip->gc, _("Couldn't create socket"));
        }
}



static void srvresolved(GaimSrvResponse *resp, int results, gpointer data) {
        struct sipe_account_data *sip;
        gchar *hostname;
        int port;

        sip = data;
        sip->srv_query_data = NULL;

        port = gaim_account_get_int(sip->account, "port", 0);

        /* find the host to connect to */
        if(results) {
                hostname = g_strdup(resp->hostname);
                if(!port)
                        port = resp->port;
                g_free(resp);
        } else {
                if(!gaim_account_get_bool(sip->account, "useproxy", FALSE)) {
                        hostname = g_strdup(sip->servername);
                } else {
                        hostname = g_strdup(gaim_account_get_string(sip->account, "proxy", sip->servername));
                }
        }

        sip->realhostname = hostname;
        sip->realport = port;
        if(!sip->realport) sip->realport = 5060;

        /* TCP case */
        if(!sip->udp) {
                /* create socket for incoming connections */
                sip->listen_data = gaim_network_listen_range(5060, 5160, SOCK_STREAM,
                                        sipe_tcp_connect_listen_cb, sip);
                if (sip->listen_data == NULL) {
                        gaim_connection_error(sip->gc, _("Could not create listen socket"));
                        return;
                }
        } else { /* UDP */
                gaim_debug_info("sipe", "using udp with server %s and port %d\n", hostname, port);

                sip->query_data = gaim_dnsquery_a(hostname, port, sipe_udp_host_resolved, sip);
                if (sip->query_data == NULL) {
                        gaim_connection_error(sip->gc, _("Could not resolve hostname"));
                }
        }
}

static void sipe_login(GaimAccount *account)
{
        GaimConnection *gc;
        struct sipe_account_data *sip;
        gchar **userserver;
        gchar *hosttoconnect;

        const char *username = gaim_account_get_username(account);
        gc = gaim_account_get_connection(account);

        if (strpbrk(username, " \t\v\r\n") != NULL) {
                gc->wants_to_die = TRUE;
                gaim_connection_error(gc, _("SIP Exchange usernames may not contain whitespaces"));
                return;
        }

        if(!gaim_account_get_bool(account, "ssl", FALSE)){
           if (!purple_ssl_is_supported())
           {
                gc->wants_to_die = TRUE;
                purple_connection_error(gc,
                        _("SSL support is needed for SSL/TLS support. Please install a supported "
                          "SSL library."));
                return;
           }
        }


        gc->proto_data = sip = g_new0(struct sipe_account_data, 1);
        sip->gc = gc;
        sip->account = account;
        sip->registerexpire = 900;
        sip->udp = gaim_account_get_bool(account, "udp", FALSE);
        sip->use_ssl = gaim_account_get_bool(account, "ssl", FALSE);
        /* TODO: is there a good default grow size? */
        if(!sip->udp)
                sip->txbuf = gaim_circ_buffer_new(0);

        userserver = g_strsplit(username, "@", 2);
        gaim_connection_set_display_name(gc, userserver[0]);
        sip->username = g_strdup(g_strjoin("@", userserver[0], userserver[1], NULL)); 
        sip->servername = g_strdup(userserver[1]);
        sip->password = g_strdup(gaim_connection_get_password(gc));
        g_strfreev(userserver);

        sip->buddies = g_hash_table_new((GHashFunc)sipe_ht_hash_nick, (GEqualFunc)sipe_ht_equals_nick);

        gaim_connection_update_progress(gc, _("Connecting"), 1, 2);

        /* TODO: Set the status correctly. */
        sip->status = g_strdup("available");

        if(!gaim_account_get_bool(account, "useproxy", FALSE)) {
                hosttoconnect = g_strdup(sip->servername);
        } else {
                hosttoconnect = g_strdup(gaim_account_get_string(account, "proxy", sip->servername));
                 
        }

        gaim_debug_info("sipe", "HosttoConnect->%s\n", hosttoconnect);

         
       
        sip->srv_query_data = gaim_srv_resolve("sip",
                        sip->udp ? "udp" : "tcp", hosttoconnect, srvresolved, sip);
        
        g_free(hosttoconnect);
}

static void sipe_close(GaimConnection *gc)
{
        struct sipe_account_data *sip = gc->proto_data;

        if(sip) {
                /* unregister */
                do_register_exp(sip, 0);
                connection_free_all(sip);

                if (sip->query_data != NULL)
                        gaim_dnsquery_destroy(sip->query_data);

                if (sip->srv_query_data != NULL)
                        gaim_srv_cancel(sip->srv_query_data);

                if (sip->listen_data != NULL)
                        gaim_network_listen_cancel(sip->listen_data);

                g_free(sip->servername);
                g_free(sip->username);
                g_free(sip->password);
                g_free(sip->registrar.nonce);
                g_free(sip->registrar.opaque);
                g_free(sip->registrar.target);
                g_free(sip->registrar.realm);
                g_free(sip->registrar.digest_session_key);
                g_free(sip->proxy.nonce);
                g_free(sip->proxy.opaque);
                g_free(sip->proxy.target);
                g_free(sip->proxy.realm);
                g_free(sip->proxy.digest_session_key);
                if(sip->txbuf)
                        gaim_circ_buffer_destroy(sip->txbuf);
                g_free(sip->realhostname);
                if(sip->listenpa) gaim_input_remove(sip->listenpa);
                if(sip->tx_handler) gaim_input_remove(sip->tx_handler);
                if(sip->resendtimeout) gaim_timeout_remove(sip->resendtimeout);
                if(sip->registertimeout) gaim_timeout_remove(sip->registertimeout);
        }
        g_free(gc->proto_data);
        gc->proto_data = NULL;
}

/* not needed since privacy is checked for every subscribe */
static void dummy_add_deny(GaimConnection *gc, const char *name) {
}

static void dummy_permit_deny(GaimConnection *gc) {
}

static gboolean sipe_plugin_load(PurplePlugin *plugin) {
  return TRUE;
}


static gboolean sipe_plugin_unload(PurplePlugin *plugin) {
    return TRUE;
}


static void sipe_plugin_destroy(PurplePlugin *plugin) {
}

static PurplePlugin *my_protocol = NULL;

static PurplePluginProtocolInfo prpl_info =
{
        0,
        NULL,                                   /* user_splits */
        NULL,                                   /* protocol_options */
        NO_BUDDY_ICONS,                 /* icon_spec */
        sipe_list_icon,         /* list_icon */
        NULL,                                   /* list_emblems */
        NULL,                                   /* status_text */
        NULL,                                   /* tooltip_text */
        sipe_status_types,      /* away_states */
        NULL,                                   /* blist_node_menu */
        NULL,                                   /* chat_info */
        NULL,                                   /* chat_info_defaults */
        sipe_login,                     /* login */
        sipe_close,                     /* close */
        sipe_im_send,                   /* send_im */
        NULL,                                   /* set_info */
//      sipe_typing,                    /* send_typing */
        NULL,                   /* send_typing */
        NULL,                                   /* get_info */
        sipe_set_status,                /* set_status */
        NULL,                                   /* set_idle */
        NULL,                                   /* change_passwd */
        sipe_add_buddy,         /* add_buddy */
        NULL,                                   /* add_buddies */
        sipe_remove_buddy,      /* remove_buddy */
        NULL,                                   /* remove_buddies */
        dummy_add_deny,                 /* add_permit */
        dummy_add_deny,                 /* add_deny */
        dummy_add_deny,                 /* rem_permit */
        dummy_add_deny,                 /* rem_deny */
        dummy_permit_deny,              /* set_permit_deny */
        NULL,                                   /* join_chat */
        NULL,                                   /* reject_chat */
        NULL,                                   /* get_chat_name */
        NULL,                                   /* chat_invite */
        NULL,                                   /* chat_leave */
        NULL,                                   /* chat_whisper */
        NULL,                                   /* chat_send */
        sipe_keep_alive,                /* keepalive */
        NULL,                                   /* register_user */
        NULL,                                   /* get_cb_info */
        NULL,                                   /* get_cb_away */
        NULL,                                   /* alias_buddy */
        NULL,                                   /* group_buddy */
        NULL,                                   /* rename_group */
        NULL,                                   /* buddy_free */
        NULL,                                   /* convo_closed */
        NULL,                                   /* normalize */
        NULL,                                   /* set_buddy_icon */
        NULL,                                   /* remove_group */
        NULL,                                   /* get_cb_real_name */
        NULL,                                   /* set_chat_topic */
        NULL,                                   /* find_blist_chat */
        NULL,                                   /* roomlist_get_list */
        NULL,                                   /* roomlist_cancel */
        NULL,                                   /* roomlist_expand_category */
        NULL,                                   /* can_receive_file */
        NULL,                                   /* send_file */
        NULL,                                   /* new_xfer */
        NULL,                                   /* offline_message */
        NULL,                                   /* whiteboard_prpl_ops */
        sipe_send_raw,                  /* send_raw */
};


static GaimPluginInfo info = {
        PURPLE_PLUGIN_MAGIC,
        PURPLE_MAJOR_VERSION,
        PURPLE_MINOR_VERSION,
        PURPLE_PLUGIN_PROTOCOL,                           /**< type           */
        NULL,                                             /**< ui_requirement */
        0,                                                /**< flags          */
        NULL,                                             /**< dependencies   */
        PURPLE_PRIORITY_DEFAULT,                          /**< priority       */
        "prpl-sipe",                                      /**< id             */
        "SIPE",                                           /**< name           */
        VERSION,                                          /**< version        */
        N_("SIP/SIMPLE Exchange Protocol Plugin"),        /**  summary        */
        N_("The SIP/SIMPLE Exchange Protocol Plugin"),    /**  description    */
        "Anibal Avelar <avelar@gmail.com>",               /**< author         */
        PURPLE_WEBSITE,                                   /**< homepage       */
        sipe_plugin_load,                                 /**< load           */
        sipe_plugin_unload,                               /**< unload         */
        sipe_plugin_destroy,                              /**< destroy        */
        NULL,                                             /**< ui_info        */
        &prpl_info,                                       /**< extra_info     */
        NULL,
        NULL,
        NULL,
        NULL,
        NULL,
        NULL
};

static void init_plugin(PurplePlugin *plugin)
{
        PurpleAccountUserSplit *split;
        PurpleAccountOption *option;

        purple_plugin_register(plugin);

        //split = gaim_account_user_split_new(_("Server"), "", '@');
        //prpl_info.user_splits = g_list_append(prpl_info.user_splits, split);
        option = gaim_account_option_bool_new(_("Use proxy"), "useproxy", FALSE);
        prpl_info.protocol_options = g_list_append(prpl_info.protocol_options, option);
        option = gaim_account_option_string_new(_("Proxy Server"), "proxy", "");
        prpl_info.protocol_options = g_list_append(prpl_info.protocol_options, option);

        /*option = gaim_account_option_bool_new(_("Publish status (note: everyone may watch you)"), "doservice", TRUE);
        prpl_info.protocol_options = g_list_append(prpl_info.protocol_options, option);*/

        option = purple_account_option_bool_new(_("Use SSL/TLS"), "ssl", FALSE);
        prpl_info.protocol_options = g_list_append(prpl_info.protocol_options,option);

        option = gaim_account_option_bool_new(_("Use UDP"), "udp", FALSE);
        prpl_info.protocol_options = g_list_append(prpl_info.protocol_options, option);
        
        option = gaim_account_option_int_new(_("Connect port"), "port", 5060);
        prpl_info.protocol_options = g_list_append(prpl_info.protocol_options, option);

        /*option = gaim_account_option_bool_new(_("Use proxy"), "useproxy", FALSE);
        prpl_info.protocol_options = g_list_append(prpl_info.protocol_options, option);
        option = gaim_account_option_string_new(_("Proxy"), "proxy", "");
        prpl_info.protocol_options = g_list_append(prpl_info.protocol_options, option);*/
        option = gaim_account_option_string_new(_("Auth User"), "authuser", "");
        prpl_info.protocol_options = g_list_append(prpl_info.protocol_options, option);
        option = gaim_account_option_string_new(_("Auth Domain"), "authdomain", "");
        prpl_info.protocol_options = g_list_append(prpl_info.protocol_options, option);
        my_protocol = plugin;

}

/* I had to redefined the function for it load, but works */
gboolean purple_init_plugin(PurplePlugin *plugin){
 plugin->info = &(info); 
 init_plugin((plugin)); 
 sipe_plugin_load((plugin)); 
 return purple_plugin_register(plugin); 
}