static void
recv_decline_msg(unsigned length)
{
ARRAY8 status, DeclineAuthenticationName, DeclineAuthenticationData;
status.data = 0;
DeclineAuthenticationName.data = 0;
DeclineAuthenticationData.data = 0;
if (XdmcpReadARRAY8 (&buffer, &status) &&
XdmcpReadARRAY8 (&buffer, &DeclineAuthenticationName) &&
XdmcpReadARRAY8 (&buffer, &DeclineAuthenticationData))
{
if (length == 6 + status.length +
DeclineAuthenticationName.length +
DeclineAuthenticationData.length &&
XdmcpCheckAuthentication (&DeclineAuthenticationName,
&DeclineAuthenticationData, DECLINE))
{
XdmcpFatal ("Session declined", &status);
}
}
XdmcpDisposeARRAY8 (&status);
XdmcpDisposeARRAY8 (&DeclineAuthenticationName);
XdmcpDisposeARRAY8 (&DeclineAuthenticationData);
}
static void
recv_accept_msg(unsigned length)
{
CARD32 AcceptSessionID;
ARRAY8 AcceptAuthenticationName, AcceptAuthenticationData;
ARRAY8 AcceptAuthorizationName, AcceptAuthorizationData;
if (state != XDM_AWAIT_REQUEST_RESPONSE)
return;
AcceptAuthenticationName.data = 0;
AcceptAuthenticationData.data = 0;
AcceptAuthorizationName.data = 0;
AcceptAuthorizationData.data = 0;
if (XdmcpReadCARD32 (&buffer, &AcceptSessionID) &&
XdmcpReadARRAY8 (&buffer, &AcceptAuthenticationName) &&
XdmcpReadARRAY8 (&buffer, &AcceptAuthenticationData) &&
XdmcpReadARRAY8 (&buffer, &AcceptAuthorizationName) &&
XdmcpReadARRAY8 (&buffer, &AcceptAuthorizationData))
{
if (length == 12 + AcceptAuthenticationName.length +
AcceptAuthenticationData.length +
AcceptAuthorizationName.length +
AcceptAuthorizationData.length)
{
if (!XdmcpCheckAuthentication (&AcceptAuthenticationName,
&AcceptAuthenticationData, ACCEPT))
{
XdmcpFatal ("Authentication Failure", &AcceptAuthenticationName);
}
/* permit access control manipulations from this host */
AugmentSelf (&req_sockaddr, req_socklen);
/* if the authorization specified in the packet fails
* to be acceptable, enable the local addresses
*/
if (!XdmcpAddAuthorization (&AcceptAuthorizationName,
&AcceptAuthorizationData))
{
AddLocalHosts ();
}
SessionID = AcceptSessionID;
state = XDM_MANAGE;
send_packet();
}
}
XdmcpDisposeARRAY8 (&AcceptAuthenticationName);
XdmcpDisposeARRAY8 (&AcceptAuthenticationData);
XdmcpDisposeARRAY8 (&AcceptAuthorizationName);
XdmcpDisposeARRAY8 (&AcceptAuthorizationData);
}
static void
receive_packet(int socketfd)
{
#if defined(IPv6) && defined(AF_INET6)
struct sockaddr_storage from;
#else
struct sockaddr_in from;
#endif
int fromlen = sizeof(from);
XdmcpHeader header;
/* read message off socket */
if (!XdmcpFill(socketfd, &buffer, (XdmcpNetaddr) &from, &fromlen))
return;
/* reset retransmission backoff */
timeOutRtx = 0;
if (!XdmcpReadHeader(&buffer, &header))
return;
if (header.version != XDM_PROTOCOL_VERSION)
return;
switch (header.opcode) {
case WILLING:
recv_willing_msg((struct sockaddr *) &from, fromlen, header.length);
break;
case UNWILLING:
XdmcpFatal("Manager unwilling", &UnwillingMessage);
break;
case ACCEPT:
recv_accept_msg(header.length);
break;
case DECLINE:
recv_decline_msg(header.length);
break;
case REFUSE:
recv_refuse_msg(header.length);
break;
case FAILED:
recv_failed_msg(header.length);
break;
case ALIVE:
recv_alive_msg(header.length);
break;
}
}
static void
recv_failed_msg(unsigned length)
{
CARD32 FailedSessionID;
ARRAY8 status;
if (state != XDM_AWAIT_MANAGE_RESPONSE)
return;
status.data = 0;
if (XdmcpReadCARD32(&buffer, &FailedSessionID) &&
XdmcpReadARRAY8(&buffer, &status)) {
if (length == 6 + status.length && SessionID == FailedSessionID) {
XdmcpFatal("Session failed", &status);
}
}
XdmcpDisposeARRAY8(&status);
}
