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xorg-x11-server/xorg-server-xdmcp.patch

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--- xorg-server-1.8.0/os/access.c 2009-12-17 05:58:44.000000000 +0000
+++ xorg-server-1.8.0-20100708/os/access.c 2010-07-08 13:55:08.000000000 +0000
@@ -800,18 +800,6 @@
)
continue;
- /*
- * ignore 'localhost' entries as they're not useful
- * on the other end of the wire
- */
- if (ifr->ifa_flags & IFF_LOOPBACK)
- continue;
-
- if (family == FamilyInternet &&
- addr[0] == 127 && addr[1] == 0 &&
- addr[2] == 0 && addr[3] == 1)
- continue;
-
/*
* Ignore '0.0.0.0' entries as they are
* returned by some OSes for unconfigured NICs but they are
@@ -821,11 +809,6 @@
addr[0] == 0 && addr[1] == 0 &&
addr[2] == 0 && addr[3] == 0)
continue;
-#if defined(IPv6) && defined(AF_INET6)
- else if (family == FamilyInternet6 &&
- IN6_IS_ADDR_LOOPBACK((struct in6_addr *)addr))
- continue;
-#endif
XdmcpRegisterConnection(family, (char *)addr, len);
#if defined(IPv6) && defined(AF_INET6)
if (family == FamilyInternet6)
--- xorg-server-1.8.0/os/xdmcp.c 2009-11-04 16:25:50.000000000 +0000
+++ xorg-server-1.8.0-20100708/os/xdmcp.c 2010-07-08 13:56:36.000000000 +0000
@@ -27,6 +27,7 @@
#include <sys/param.h>
#include <sys/socket.h>
#include <netinet/in.h>
+#include <arpa/inet.h>
#include <netdb.h>
#endif
@@ -209,6 +210,50 @@
static ARRAY8 ManufacturerDisplayID;
+
+
+static int is_loopback(int type, void *a)
+{
+ char *addr = a;
+ int ret = 0;
+ int gairet;
+ struct sockaddr_storage s;
+ struct sockaddr_in *s4 = (struct sockaddr_in *)&s;
+ struct sockaddr_in6 *s6 = (struct sockaddr_in6 *)&s;
+ char host[NI_MAXHOST];
+
+ memset(&s, 0, sizeof(s));
+ if (type == FamilyInternet) {
+ s4->sin_family = AF_INET;
+ s4->sin_addr.s_addr = *((in_addr_t*)a);
+ if (addr[0] == 127) {
+ /* IPv4 loopback /8 net */
+ ret = 1;
+ }
+ } else if (type == FamilyInternet6) {
+ s6->sin6_family = AF_INET6;
+ memcpy(&(s6->sin6_addr), a, sizeof(struct in6_addr));
+ if (IN6_IS_ADDR_LOOPBACK(addr)) {
+ /* IPv6 loopback address */
+ ret = 1;
+ } else if (IN6_IS_ADDR_V4MAPPED(addr) &&
+ ((struct in6_addr*)addr)->s6_addr[12] == 127) {
+ /* IPv4 mapped loopback address */
+ ret = 1;
+ }
+ } else {
+ return 0;
+ }
+ gairet = getnameinfo((struct sockaddr*)&s, sizeof(struct sockaddr_storage),
+ host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
+ if (gairet != 0) {
+ ErrorF(" => %s\n", gai_strerror(gairet));
+ } else {
+ ErrorF("is_loopback(%s) = %d\n", host, ret);
+ }
+ return ret;
+}
+
static void
XdmcpRegisterManufacturerDisplayID (char *name, int length)
{
@@ -438,8 +483,8 @@
* Register the host address for the display
*/
-static ARRAY16 ConnectionTypes;
-static ARRAYofARRAY8 ConnectionAddresses;
+static ARRAY16 ConnectionTypes[2];
+static ARRAYofARRAY8 ConnectionAddresses[2];
static long xdmcpGeneration;
void
@@ -451,12 +496,21 @@
int i;
CARD8 *newAddress;
+ /*
+ * Index for ConnectionTypes and ConnectionAddresses:
+ * 1 for loopback address, 0 for remote addresses.
+ */
+ int l;
+
if (xdmcpGeneration != serverGeneration)
{
- XdmcpDisposeARRAY16 (&ConnectionTypes);
- XdmcpDisposeARRAYofARRAY8 (&ConnectionAddresses);
+ XdmcpDisposeARRAY16 (&ConnectionTypes[0]);
+ XdmcpDisposeARRAY16 (&ConnectionTypes[1]);
+ XdmcpDisposeARRAYofARRAY8 (&ConnectionAddresses[0]);
+ XdmcpDisposeARRAYofARRAY8 (&ConnectionAddresses[1]);
xdmcpGeneration = serverGeneration;
}
+ l = is_loopback(type, address);
if (xdm_from != NULL) { /* Only register the requested address */
const void *regAddr = address;
const void *fromAddr = NULL;
@@ -490,27 +544,27 @@
return;
}
}
- if (ConnectionAddresses.length + 1 == 256)
+ if (ConnectionAddresses[l].length + 1 == 256)
return;
newAddress = xalloc (addrlen * sizeof (CARD8));
if (!newAddress)
return;
- if (!XdmcpReallocARRAY16 (&ConnectionTypes, ConnectionTypes.length + 1))
+ if (!XdmcpReallocARRAY16 (&ConnectionTypes[l], ConnectionTypes[l].length + 1))
{
xfree (newAddress);
return;
}
- if (!XdmcpReallocARRAYofARRAY8 (&ConnectionAddresses,
- ConnectionAddresses.length + 1))
+ if (!XdmcpReallocARRAYofARRAY8 (&ConnectionAddresses[l],
+ ConnectionAddresses[l].length + 1))
{
xfree (newAddress);
return;
}
- ConnectionTypes.data[ConnectionTypes.length - 1] = (CARD16) type;
+ ConnectionTypes[l].data[ConnectionTypes[l].length - 1] = (CARD16) type;
for (i = 0; i < addrlen; i++)
newAddress[i] = address[i];
- ConnectionAddresses.data[ConnectionAddresses.length-1].data = newAddress;
- ConnectionAddresses.data[ConnectionAddresses.length-1].length = addrlen;
+ ConnectionAddresses[l].data[ConnectionAddresses[l].length-1].data = newAddress;
+ ConnectionAddresses[l].data[ConnectionAddresses[l].length-1].length = addrlen;
}
/*
@@ -1176,12 +1230,19 @@
CARD16 XdmcpConnectionType;
ARRAY8 authenticationData;
int socketfd = xdmcpSocket;
+ int l;
switch (SOCKADDR_FAMILY(ManagerAddress))
{
- case AF_INET: XdmcpConnectionType=FamilyInternet; break;
+ case AF_INET:
+ XdmcpConnectionType=FamilyInternet;
+ l = is_loopback(XdmcpConnectionType, &(((struct sockaddr_in*)&ManagerAddress)->sin_addr.s_addr));
+ break;
#if defined(IPv6) && defined(AF_INET6)
- case AF_INET6: XdmcpConnectionType=FamilyInternet6; break;
+ case AF_INET6:
+ XdmcpConnectionType=FamilyInternet6;
+ l = is_loopback(XdmcpConnectionType, ((struct sockaddr_in6*)&ManagerAddress)->sin6_addr.s6_addr);
+ break;
#endif
default: XdmcpConnectionType=0xffff; break;
}
@@ -1190,10 +1251,10 @@
header.opcode = (CARD16) REQUEST;
length = 2; /* display number */
- length += 1 + 2 * ConnectionTypes.length; /* connection types */
+ length += 1 + 2 * ConnectionTypes[l].length; /* connection types */
length += 1; /* connection addresses */
- for (i = 0; i < ConnectionAddresses.length; i++)
- length += 2 + ConnectionAddresses.data[i].length;
+ for (i = 0; i < ConnectionAddresses[l].length; i++)
+ length += 2 + ConnectionAddresses[l].data[i].length;
authenticationData.length = 0;
authenticationData.data = 0;
if (AuthenticationFuncs)
@@ -1216,27 +1277,27 @@
return;
}
XdmcpWriteCARD16 (&buffer, DisplayNumber);
- XdmcpWriteCARD8 (&buffer, ConnectionTypes.length);
+ XdmcpWriteCARD8 (&buffer, ConnectionTypes[l].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. mario@klebsch.de */
- 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]);
+ for (i = 0; i < (int)ConnectionTypes[l].length; i++)
+ if (ConnectionTypes[l].data[i]==XdmcpConnectionType)
+ XdmcpWriteCARD16 (&buffer, ConnectionTypes[l].data[i]);
+ for (i = 0; i < (int)ConnectionTypes[l].length; i++)
+ if (ConnectionTypes[l].data[i]!=XdmcpConnectionType)
+ XdmcpWriteCARD16 (&buffer, ConnectionTypes[l].data[i]);
+
+ XdmcpWriteCARD8 (&buffer, ConnectionAddresses[l].length);
+ for (i = 0; i < (int)ConnectionAddresses[l].length; i++)
+ if ( (i<ConnectionTypes[l].length) &&
+ (ConnectionTypes[l].data[i]==XdmcpConnectionType) )
+ XdmcpWriteARRAY8 (&buffer, &ConnectionAddresses[l].data[i]);
+ for (i = 0; i < (int)ConnectionAddresses[l].length; i++)
+ if ( (i>=ConnectionTypes[l].length) ||
+ (ConnectionTypes[l].data[i]!=XdmcpConnectionType) )
+ XdmcpWriteARRAY8 (&buffer, &ConnectionAddresses[l].data[i]);
XdmcpWriteARRAY8 (&buffer, AuthenticationName);
XdmcpWriteARRAY8 (&buffer, &authenticationData);
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