/*

 * Dropbear - a SSH2 server

 * 

 * Copyright (c) 2002,2003 Matt Johnston

 * All rights reserved.

 * 

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 * 

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 * 

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

 * SOFTWARE. */

#include "includes.h"

#include "dbutil.h"

#include "service.h"

#include "session.h"

#include "packet.h"

#include "ssh.h"

#include "auth.h"

static void send_msg_service_accept(const char *name, int len);

/* processes a SSH_MSG_SERVICE_REQUEST, returning 0 if finished,

 * 1 if not */

void recv_msg_service_request() {

  char * name;

  unsigned int len;

  TRACE(("enter recv_msg_service_request"))

  name = buf_getstring(ses.payload, &len);

  /* ssh-userauth */

  if (len == SSH_SERVICE_USERAUTH_LEN && 

      strncmp(SSH_SERVICE_USERAUTH, name, len) == 0) {

    send_msg_service_accept(name, len);

    m_free(name);

    TRACE(("leave recv_msg_service_request: done ssh-userauth"))

    return;

  }

  /* ssh-connection */

  if (len == SSH_SERVICE_CONNECTION_LEN &&

      (strncmp(SSH_SERVICE_CONNECTION, name, len) == 0)) {

    if (ses.authstate.authdone != 1) {

      dropbear_exit("Request for connection before auth");

    }

    send_msg_service_accept(name, len);

    m_free(name);

    TRACE(("leave recv_msg_service_request: done ssh-connection"))

    return;

  }

  m_free(name);

  /* TODO this should be a MSG_DISCONNECT */

  dropbear_exit("Unrecognised SSH_MSG_SERVICE_REQUEST");

}

static void send_msg_service_accept(const char *name, int len) {

  TRACE(("accepting service %s", name))

  CHECKCLEARTOWRITE();

  buf_putbyte(ses.writepayload, SSH_MSG_SERVICE_ACCEPT);

  buf_putstring(ses.writepayload, name, len);

  encrypt_packet();

}