static void indirect_respond(struct sockaddr *from, int fromlen, int length, int fd)
{
ARRAYofARRAY8 queryAuthenticationNames;
ARRAY8 clientAddress;
ARRAY8 clientPort;
CARD16 connectionType;
int expectedLen;
int i;
XdmcpHeader header;
int localHostAsWell;
Debug("<indirect> respond %d\n", length);
if(!XdmcpReadARRAYofARRAY8(&buffer, &queryAuthenticationNames))
return;
expectedLen = 1;
for(i = 0; i < (int)queryAuthenticationNames.length; i++)
expectedLen += 2 + queryAuthenticationNames.data[i].length;
if(length == expectedLen)
{
ClientAddress(from, &clientAddress, &clientPort, &connectionType);
/*
* set up the forward query packet
*/
header.version = XDM_PROTOCOL_VERSION;
header.opcode = (CARD16)FORWARD_QUERY;
header.length = 0;
header.length += 2 + clientAddress.length;
header.length += 2 + clientPort.length;
header.length += 1;
for(i = 0; i < (int)queryAuthenticationNames.length; i++)
header.length += 2 + queryAuthenticationNames.data[i].length;
XdmcpWriteHeader(&buffer, &header);
XdmcpWriteARRAY8(&buffer, &clientAddress);
XdmcpWriteARRAY8(&buffer, &clientPort);
XdmcpWriteARRAYofARRAY8(&buffer, &queryAuthenticationNames);
localHostAsWell = ForEachMatchingIndirectHost(&clientAddress, connectionType, sendForward, (char *)fd);
XdmcpDisposeARRAY8(&clientAddress);
XdmcpDisposeARRAY8(&clientPort);
if(localHostAsWell)
all_query_respond(from, fromlen, &queryAuthenticationNames, INDIRECT_QUERY, fd);
}
else
Debug("<indirect> length error got %d expect %d\n", length, expectedLen);
XdmcpDisposeARRAYofARRAY8(&queryAuthenticationNames);
}
static void
send_request_msg(void)
{
XdmcpHeader header;
int length;
int i;
CARD16 XdmcpConnectionType;
ARRAY8 authenticationData;
int socketfd = xdmcpSocket;
switch (SOCKADDR_FAMILY(ManagerAddress)) {
case AF_INET:
XdmcpConnectionType = FamilyInternet;
break;
#if defined(IPv6) && defined(AF_INET6)
case AF_INET6:
XdmcpConnectionType = FamilyInternet6;
break;
#endif
default:
XdmcpConnectionType = 0xffff;
break;
}
header.version = XDM_PROTOCOL_VERSION;
header.opcode = (CARD16) REQUEST;
length = 2; /* display number */
length += 1 + 2 * ConnectionTypes.length; /* connection types */
length += 1; /* connection addresses */
for (i = 0; i < ConnectionAddresses.length; i++)
length += 2 + ConnectionAddresses.data[i].length;
authenticationData.length = 0;
authenticationData.data = 0;
if (AuthenticationFuncs) {
(*AuthenticationFuncs->Generator) (AuthenticationData,
&authenticationData, REQUEST);
}
length += 2 + AuthenticationName->length; /* authentication name */
length += 2 + authenticationData.length; /* authentication data */
length += 1; /* authorization names */
for (i = 0; i < AuthorizationNames.length; i++)
length += 2 + AuthorizationNames.data[i].length;
length += 2 + ManufacturerDisplayID.length; /* display ID */
header.length = length;
if (!XdmcpWriteHeader(&buffer, &header)) {
XdmcpDisposeARRAY8(&authenticationData);
return;
}
XdmcpWriteCARD16(&buffer, DisplayNumber);
XdmcpWriteCARD8(&buffer, ConnectionTypes.length);
/* The connection array is send reordered, so that connections of */
/* the same address type as the XDMCP manager connection are send */
/* first. This works around a bug in xdm. [email protected] */
for (i = 0; i < (int) ConnectionTypes.length; i++)
if (ConnectionTypes.data[i] == XdmcpConnectionType)
XdmcpWriteCARD16(&buffer, ConnectionTypes.data[i]);
for (i = 0; i < (int) ConnectionTypes.length; i++)
if (ConnectionTypes.data[i] != XdmcpConnectionType)
XdmcpWriteCARD16(&buffer, ConnectionTypes.data[i]);
XdmcpWriteCARD8(&buffer, ConnectionAddresses.length);
for (i = 0; i < (int) ConnectionAddresses.length; i++)
if ((i < ConnectionTypes.length) &&
(ConnectionTypes.data[i] == XdmcpConnectionType))
XdmcpWriteARRAY8(&buffer, &ConnectionAddresses.data[i]);
for (i = 0; i < (int) ConnectionAddresses.length; i++)
if ((i >= ConnectionTypes.length) ||
(ConnectionTypes.data[i] != XdmcpConnectionType))
XdmcpWriteARRAY8(&buffer, &ConnectionAddresses.data[i]);
XdmcpWriteARRAY8(&buffer, AuthenticationName);
XdmcpWriteARRAY8(&buffer, &authenticationData);
XdmcpDisposeARRAY8(&authenticationData);
XdmcpWriteARRAYofARRAY8(&buffer, &AuthorizationNames);
XdmcpWriteARRAY8(&buffer, &ManufacturerDisplayID);
#if defined(IPv6) && defined(AF_INET6)
if (SOCKADDR_FAMILY(req_sockaddr) == AF_INET6)
socketfd = xdmcpSocket6;
#endif
if (XdmcpFlush(socketfd, &buffer,
(XdmcpNetaddr) &req_sockaddr, req_socklen))
state = XDM_AWAIT_REQUEST_RESPONSE;
}
static void
send_query_msg(void)
{
XdmcpHeader header;
Bool broadcast = FALSE;
#if defined(IPv6) && defined(AF_INET6)
Bool multicast = FALSE;
#endif
int i;
int socketfd = xdmcpSocket;
header.version = XDM_PROTOCOL_VERSION;
switch (state) {
case XDM_QUERY:
header.opcode = (CARD16) QUERY;
state = XDM_COLLECT_QUERY;
break;
case XDM_BROADCAST:
header.opcode = (CARD16) BROADCAST_QUERY;
state = XDM_COLLECT_BROADCAST_QUERY;
broadcast = TRUE;
break;
#if defined(IPv6) && defined(AF_INET6)
case XDM_MULTICAST:
header.opcode = (CARD16) BROADCAST_QUERY;
state = XDM_COLLECT_MULTICAST_QUERY;
multicast = TRUE;
break;
#endif
case XDM_INDIRECT:
header.opcode = (CARD16) INDIRECT_QUERY;
state = XDM_COLLECT_INDIRECT_QUERY;
break;
default:
break;
}
header.length = 1;
for (i = 0; i < AuthenticationNames.length; i++)
header.length += 2 + AuthenticationNames.data[i].length;
XdmcpWriteHeader(&buffer, &header);
XdmcpWriteARRAYofARRAY8(&buffer, &AuthenticationNames);
if (broadcast) {
for (i = 0; i < NumBroadcastAddresses; i++)
XdmcpFlush(xdmcpSocket, &buffer,
(XdmcpNetaddr) &BroadcastAddresses[i],
sizeof(struct sockaddr_in));
}
#if defined(IPv6) && defined(AF_INET6)
else if (multicast) {
struct multicastinfo *mcl;
struct addrinfo *ai;
for (mcl = mcastlist; mcl != NULL; mcl = mcl->next) {
for (ai = mcl->ai; ai != NULL; ai = ai->ai_next) {
if (ai->ai_family == AF_INET) {
unsigned char hopflag = (unsigned char) mcl->hops;
socketfd = xdmcpSocket;
setsockopt(socketfd, IPPROTO_IP, IP_MULTICAST_TTL,
&hopflag, sizeof(hopflag));
}
else if (ai->ai_family == AF_INET6) {
int hopflag6 = mcl->hops;
socketfd = xdmcpSocket6;
setsockopt(socketfd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
&hopflag6, sizeof(hopflag6));
}
else {
continue;
}
XdmcpFlush(socketfd, &buffer,
(XdmcpNetaddr) ai->ai_addr, ai->ai_addrlen);
break;
}
}
}
#endif
else {
#if defined(IPv6) && defined(AF_INET6)
if (SOCKADDR_FAMILY(ManagerAddress) == AF_INET6)
socketfd = xdmcpSocket6;
#endif
XdmcpFlush(socketfd, &buffer, (XdmcpNetaddr) &ManagerAddress,
ManagerAddressLen);
}
}
