int ForEachMatchingIndirectHost (
ARRAY8Ptr clientAddress,
CARD16 connectionType,
ChooserFunc function,
char *closure)
{
int haveLocalhost = 0;
DisplayEntry *d;
char *clientName = NULL;
for (d = database; d; d = d->next)
{
switch (d->type) {
case DISPLAY_ALIAS:
case DISPLAY_LISTEN:
continue;
case DISPLAY_PATTERN:
if (!clientName)
clientName = NetworkAddressToHostname (connectionType,
clientAddress);
if (!patternMatch (clientName, d->entry.displayPattern))
continue;
break;
case DISPLAY_ADDRESS:
if (d->entry.displayAddress.connectionType != connectionType ||
!XdmcpARRAY8Equal (&d->entry.displayAddress.clientAddress,
clientAddress))
{
continue;
}
break;
}
if (!d->hosts)
continue;
if (d->notAllowed)
break;
if (d->chooser)
{
ARRAY8Ptr choice;
choice = IndirectChoice (clientAddress, connectionType);
if (!choice || XdmcpARRAY8Equal (getLocalAddress(), choice))
haveLocalhost = 1;
else
(*function) (connectionType, choice, closure);
}
else if (scanHostlist (d->hosts, clientAddress, connectionType,
function, closure, 0, FALSE))
{
haveLocalhost = 1;
}
break;
}
free (clientName);
return haveLocalhost;
}
void ForEachChooserHost (
ARRAY8Ptr clientAddress,
CARD16 connectionType,
ChooserFunc function,
char *closure)
{
int haveLocalhost = 0;
DisplayEntry *d;
char *clientName = NULL;
for (d = database; d; d = d->next)
{
switch (d->type) {
case DISPLAY_ALIAS:
continue;
case DISPLAY_PATTERN:
if (!clientName)
clientName = NetworkAddressToHostname (connectionType,
clientAddress);
if (!patternMatch (clientName, d->entry.displayPattern))
continue;
break;
case DISPLAY_ADDRESS:
if (d->entry.displayAddress.connectionType != connectionType ||
!XdmcpARRAY8Equal (&d->entry.displayAddress.clientAddress,
clientAddress))
{
continue;
}
break;
}
if (!d->hosts)
continue;
if (d->notAllowed)
break;
if (!d->chooser)
break;
if (scanHostlist (d->hosts, clientAddress, connectionType,
function, closure, 0, TRUE))
{
haveLocalhost = 1;
}
break;
}
if (clientName)
free (clientName);
if (haveLocalhost)
(*function) (connectionType, getLocalAddress(), closure);
}
int UseChooser (
ARRAY8Ptr clientAddress,
CARD16 connectionType)
{
DisplayEntry *d;
char *clientName = NULL;
for (d = database; d; d = d->next)
{
switch (d->type) {
case DISPLAY_ALIAS:
continue;
case DISPLAY_PATTERN:
if (!clientName)
clientName = NetworkAddressToHostname (connectionType,
clientAddress);
if (!patternMatch (clientName, d->entry.displayPattern))
continue;
break;
case DISPLAY_ADDRESS:
if (d->entry.displayAddress.connectionType != connectionType ||
!XdmcpARRAY8Equal (&d->entry.displayAddress.clientAddress,
clientAddress))
{
continue;
}
break;
}
if (!d->hosts)
continue;
if (d->notAllowed)
break;
if (d->chooser && !IndirectChoice (clientAddress, connectionType)) {
if (clientName)
free (clientName);
return 1;
}
break;
}
if (clientName)
free (clientName);
return 0;
}
int AcceptableDisplayAddress (
ARRAY8Ptr clientAddress,
CARD16 connectionType,
xdmOpCode type)
{
DisplayEntry *d;
char *clientName = NULL;
if (!*accessFile)
return 1;
if (type == INDIRECT_QUERY)
return 1;
for (d = database; d; d = d->next)
{
if (d->hosts)
continue;
switch (d->type) {
case DISPLAY_ALIAS:
case DISPLAY_LISTEN:
continue;
case DISPLAY_PATTERN:
if (!clientName)
clientName = NetworkAddressToHostname (connectionType,
clientAddress);
if (!patternMatch (clientName, d->entry.displayPattern))
continue;
break;
case DISPLAY_ADDRESS:
if (d->entry.displayAddress.connectionType != connectionType ||
!XdmcpARRAY8Equal (&d->entry.displayAddress.clientAddress,
clientAddress))
{
continue;
}
break;
}
break;
}
free (clientName);
return (d != 0) && (d->notAllowed == 0)
&& (type == BROADCAST_QUERY ? d->notBroadcast == 0 : 1);
}
static void manage(struct sockaddr *from, int fromlen, int length, int fd)
{
CARD32 sessionID;
CARD16 displayNumber;
ARRAY8 displayClass;
int expectlen;
struct protoDisplay *pdpy;
struct display *d;
char *name = NULL;
char *class2 = NULL;
XdmcpNetaddr from_save;
ARRAY8 clientAddress, clientPort;
CARD16 connectionType;
Debug("<manage> %d\n", length);
displayClass.data = 0;
displayClass.length = 0;
if(XdmcpReadCARD32(&buffer, &sessionID) && XdmcpReadCARD16(&buffer, &displayNumber) && XdmcpReadARRAY8(&buffer, &displayClass))
{
expectlen = 4 + /* session ID */
2 + /* displayNumber */
2 + displayClass.length; /* displayClass */
if(expectlen != length)
{
Debug("<manage> length error got %d expect %d\n", length, expectlen);
goto abort;
}
pdpy = FindProtoDisplay((XdmcpNetaddr)from, fromlen, displayNumber);
Debug("<manage> session ID %ld, pdpy %p\n", (long)sessionID, pdpy);
if(!pdpy || pdpy->sessionID != sessionID)
{
/*
* We may have already started a session for this display
* but it hasn't seen the response in the form of an
* XOpenDisplay() yet. So check if it is in the list of active
* displays, and if so check that the session id's match.
* If all this is true, then we have a duplicate request that
* can be ignored.
*/
if(!pdpy && (d = FindDisplayByAddress((XdmcpNetaddr)from, fromlen, displayNumber)) && d->sessionID == sessionID)
{
Debug("manage: got duplicate pkt, ignoring\n");
goto abort;
}
Debug("session ID %ld refused\n", (long)sessionID);
if(pdpy)
Debug("existing session ID %ld\n", (long)pdpy->sessionID);
send_refuse(from, fromlen, sessionID, fd);
}
else
{
name = NetworkAddressToName(pdpy->connectionType, &pdpy->connectionAddress, from, pdpy->displayNumber);
if(!name)
{
Debug("could not compute display name\n");
send_failed(from, fromlen, "(no name)", sessionID, "out of memory", fd);
goto abort;
}
Debug("computed display name: %s\n", name);
if((d = FindDisplayByName(name)))
{
Debug("terminating active session for %s\n", d->name);
StopDisplay(d);
}
if(displayClass.length)
{
if(!StrNDup(&class2, (char *)displayClass.data, displayClass.length))
{
send_failed(from, fromlen, name, sessionID, "out of memory", fd);
goto abort;
}
}
if(!(from_save = (XdmcpNetaddr)Malloc(fromlen)))
{
send_failed(from, fromlen, name, sessionID, "out of memory", fd);
goto abort;
}
memmove(from_save, from, fromlen);
if(!(d = NewDisplay(name)))
{
free((char *)from_save);
send_failed(from, fromlen, name, sessionID, "out of memory", fd);
goto abort;
}
d->class2 = class2;
class2 = 0;
d->displayType = dForeign | dTransient | dFromXDMCP;
d->sessionID = pdpy->sessionID;
d->from.data = (unsigned char *)from_save;
d->from.length = fromlen;
d->displayNumber = pdpy->displayNumber;
ClientAddress(from, &clientAddress, &clientPort, &connectionType);
d->useChooser = 0;
d->xdmcpFd = fd;
if(IsIndirectClient(&clientAddress, connectionType))
{
Debug("IsIndirectClient\n");
ForgetIndirectClient(&clientAddress, connectionType);
if(UseChooser(&clientAddress, connectionType))
{
d->useChooser = 1;
Debug("use chooser for %s\n", d->name);
}
}
d->clientAddr = clientAddress;
d->connectionType = connectionType;
d->remoteHost = NetworkAddressToHostname(pdpy->connectionType, &pdpy->connectionAddress);
XdmcpDisposeARRAY8(&clientPort);
if(pdpy->fileAuthorization)
{
d->authorizations = (Xauth **)Malloc(sizeof(Xauth *));
if(!d->authorizations)
{
free((char *)from_save);
free((char *)d);
send_failed(from, fromlen, name, sessionID, "out of memory", fd);
goto abort;
}
d->authorizations[0] = pdpy->fileAuthorization;
d->authNum = 1;
pdpy->fileAuthorization = 0;
}
DisposeProtoDisplay(pdpy);
Debug("starting display %s,%s\n", d->name, d->class2);
if(LoadDisplayResources(d) < 0)
{
LogError(
"Unable to read configuration for display %s; "
"stopping it.\n",
d->name);
StopDisplay(d);
}
else
StartDisplay(d);
CloseGetter();
}
}
abort:
XdmcpDisposeARRAY8(&displayClass);
if(name)
free((char *)name);
if(class2)
free((char *)class2);
}
