static void send_alive(struct sockaddr *from, int fromlen, int length, int fd)
{
CARD32 sessionID;
CARD16 displayNumber;
struct display *d;
XdmcpHeader header;
CARD8 sendRunning;
CARD32 sendSessionID;
Debug("send <alive>\n");
if(XdmcpReadCARD16(&buffer, &displayNumber) && XdmcpReadCARD32(&buffer, &sessionID))
{
if(length == 6)
{
if(!(d = FindDisplayBySessionID(sessionID)))
d = FindDisplayByAddress((XdmcpNetaddr)from, fromlen, displayNumber);
sendRunning = 0;
sendSessionID = 0;
if(d && d->status == running)
{
if(d->sessionID == sessionID)
sendRunning = 1;
sendSessionID = d->sessionID;
}
header.version = XDM_PROTOCOL_VERSION;
header.opcode = (CARD16)ALIVE;
header.length = 5;
Debug("<alive>: %d %ld\n", sendRunning, (long)sendSessionID);
XdmcpWriteHeader(&buffer, &header);
XdmcpWriteCARD8(&buffer, sendRunning);
XdmcpWriteCARD32(&buffer, sendSessionID);
XdmcpFlush(fd, &buffer, (XdmcpNetaddr)from, fromlen);
}
}
}
static void sendForward(CARD16 connectionType, ARRAY8Ptr address, char *closure)
{
#ifdef AF_INET
struct sockaddr_in in_addr;
#endif
#if defined(IPv6) && defined(AF_INET6)
struct sockaddr_in6 in6_addr;
#endif
#ifdef AF_DECnet
#endif
struct sockaddr *addr;
int addrlen;
switch(connectionType)
{
#ifdef AF_INET
case FamilyInternet:
addr = (struct sockaddr *)&in_addr;
bzero((char *)&in_addr, sizeof(in_addr));
#ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN
in_addr.sin_len = sizeof(in_addr);
#endif
in_addr.sin_family = AF_INET;
in_addr.sin_port = htons((short)XDM_UDP_PORT);
if(address->length != 4)
return;
memmove((char *)&in_addr.sin_addr, address->data, address->length);
addrlen = sizeof(struct sockaddr_in);
break;
#endif
#if defined(IPv6) && defined(AF_INET6)
case FamilyInternet6:
addr = (struct sockaddr *)&in6_addr;
bzero((char *)&in6_addr, sizeof(in6_addr));
#ifdef SIN6_LEN
in6_addr.sin6_len = sizeof(in6_addr);
#endif
in6_addr.sin6_family = AF_INET6;
in6_addr.sin6_port = htons((short)XDM_UDP_PORT);
if(address->length != 16)
return;
memmove((char *)&in6_addr.sin6_addr, address->data, address->length);
addrlen = sizeof(struct sockaddr_in6);
break;
#endif
#ifdef AF_DECnet
case FamilyDECnet:
#endif
default:
return;
}
XdmcpFlush((int)closure, &buffer, (XdmcpNetaddr)addr, addrlen);
return;
}
static void send_refuse(struct sockaddr *from, int fromlen, CARD32 sessionID, int fd)
{
XdmcpHeader header;
Debug("send <refuse> %ld\n", (long)sessionID);
header.version = XDM_PROTOCOL_VERSION;
header.opcode = (CARD16)REFUSE;
header.length = 4;
XdmcpWriteHeader(&buffer, &header);
XdmcpWriteCARD32(&buffer, sessionID);
XdmcpFlush(fd, &buffer, (XdmcpNetaddr)from, fromlen);
}
static void send_unwilling(struct sockaddr *from, int fromlen, ARRAY8Ptr authenticationName, ARRAY8Ptr status, int fd)
{
XdmcpHeader header;
Debug("send <unwilling> %.*s %.*s\n", authenticationName->length, authenticationName->data, status->length, status->data);
header.version = XDM_PROTOCOL_VERSION;
header.opcode = (CARD16)UNWILLING;
header.length = 4 + Hostname.length + status->length;
XdmcpWriteHeader(&buffer, &header);
XdmcpWriteARRAY8(&buffer, &Hostname);
XdmcpWriteARRAY8(&buffer, status);
XdmcpFlush(fd, &buffer, (XdmcpNetaddr)from, fromlen);
}
static void send_decline(struct sockaddr *to, int tolen, ARRAY8Ptr authenticationName, ARRAY8Ptr authenticationData, ARRAY8Ptr status, int fd)
{
XdmcpHeader header;
Debug("<decline> %.*s\n", status->length, status->data);
header.version = XDM_PROTOCOL_VERSION;
header.opcode = (CARD16)DECLINE;
header.length = 0;
header.length += 2 + status->length;
header.length += 2 + authenticationName->length;
header.length += 2 + authenticationData->length;
XdmcpWriteHeader(&buffer, &header);
XdmcpWriteARRAY8(&buffer, status);
XdmcpWriteARRAY8(&buffer, authenticationName);
XdmcpWriteARRAY8(&buffer, authenticationData);
XdmcpFlush(fd, &buffer, (XdmcpNetaddr)to, tolen);
}
static void send_failed(struct sockaddr *from, int fromlen, const char *name, CARD32 sessionID, const char *reason, int fd)
{
char buf[360];
XdmcpHeader header;
ARRAY8 status;
sprintf(buf, "Session %ld failed for display %.260s: %s", (long)sessionID, name, reason);
Debug("send_failed(%\"s)\n", buf);
status.length = strlen(buf);
status.data = (CARD8Ptr)buf;
header.version = XDM_PROTOCOL_VERSION;
header.opcode = (CARD16)FAILED;
header.length = 6 + status.length;
XdmcpWriteHeader(&buffer, &header);
XdmcpWriteCARD32(&buffer, sessionID);
XdmcpWriteARRAY8(&buffer, &status);
XdmcpFlush(fd, &buffer, (XdmcpNetaddr)from, fromlen);
}
static void
send_keepalive_msg(void)
{
XdmcpHeader header;
int socketfd = xdmcpSocket;
header.version = XDM_PROTOCOL_VERSION;
header.opcode = (CARD16) KEEPALIVE;
header.length = 6;
XdmcpWriteHeader(&buffer, &header);
XdmcpWriteCARD16(&buffer, DisplayNumber);
XdmcpWriteCARD32(&buffer, SessionID);
state = XDM_AWAIT_ALIVE_RESPONSE;
#if defined(IPv6) && defined(AF_INET6)
if (SOCKADDR_FAMILY(req_sockaddr) == AF_INET6)
socketfd = xdmcpSocket6;
#endif
XdmcpFlush(socketfd, &buffer, (XdmcpNetaddr) &req_sockaddr, req_socklen);
}
static void send_accept(struct sockaddr *to, int tolen, CARD32 sessionID, ARRAY8Ptr authenticationName, ARRAY8Ptr authenticationData,
ARRAY8Ptr authorizationName, ARRAY8Ptr authorizationData, int fd)
{
XdmcpHeader header;
Debug("<accept> session ID %ld\n", (long)sessionID);
header.version = XDM_PROTOCOL_VERSION;
header.opcode = (CARD16)ACCEPT;
header.length = 4; /* session ID */
header.length += 2 + authenticationName->length;
header.length += 2 + authenticationData->length;
header.length += 2 + authorizationName->length;
header.length += 2 + authorizationData->length;
XdmcpWriteHeader(&buffer, &header);
XdmcpWriteCARD32(&buffer, sessionID);
XdmcpWriteARRAY8(&buffer, authenticationName);
XdmcpWriteARRAY8(&buffer, authenticationData);
XdmcpWriteARRAY8(&buffer, authorizationName);
XdmcpWriteARRAY8(&buffer, authorizationData);
XdmcpFlush(fd, &buffer, (XdmcpNetaddr)to, tolen);
}
static void
send_manage_msg(void)
{
XdmcpHeader header;
int socketfd = xdmcpSocket;
header.version = XDM_PROTOCOL_VERSION;
header.opcode = (CARD16) MANAGE;
header.length = 8 + DisplayClass.length;
if (!XdmcpWriteHeader(&buffer, &header))
return;
XdmcpWriteCARD32(&buffer, SessionID);
XdmcpWriteCARD16(&buffer, DisplayNumber);
XdmcpWriteARRAY8(&buffer, &DisplayClass);
state = XDM_AWAIT_MANAGE_RESPONSE;
#if defined(IPv6) && defined(AF_INET6)
if (SOCKADDR_FAMILY(req_sockaddr) == AF_INET6)
socketfd = xdmcpSocket6;
#endif
XdmcpFlush(socketfd, &buffer, (XdmcpNetaddr) &req_sockaddr, req_socklen);
}
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);
}
}