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-rw-r--r--kdm/backend/xdmcp.c1165
1 files changed, 0 insertions, 1165 deletions
diff --git a/kdm/backend/xdmcp.c b/kdm/backend/xdmcp.c
deleted file mode 100644
index 6abaf5fc8..000000000
--- a/kdm/backend/xdmcp.c
+++ /dev/null
@@ -1,1165 +0,0 @@
-/*
-
-Copyright 1988, 1998 The Open Group
-Copyright 2002 Sun Microsystems, Inc. All rights reserved.
-Copyright 2001-2004 Oswald Buddenhagen <ossi@kde.org>
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation.
-
-The above copyright notice and this permission notice shall be included
-in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
-OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of a copyright holder shall
-not be used in advertising or otherwise to promote the sale, use or
-other dealings in this Software without prior written authorization
-from the copyright holder.
-
-*/
-
-/*
- * xdm - display manager daemon
- * Author: Keith Packard, MIT X Consortium
- *
- * xdmcp.c - Support for XDMCP
- */
-
-#include <config.h>
-
-#ifdef XDMCP
-
-#include "dm.h"
-#include "dm_error.h"
-#include "dm_auth.h"
-#include "dm_socket.h"
-
-#include <sys/types.h>
-#include <ctype.h>
-
-#include <netdb.h>
-#if defined(IPv6) && defined(AF_INET6)
-# include <arpa/inet.h>
-#endif
-
-/*
- * Forward reference
- */
-static void broadcast_respond( struct sockaddr *from, int fromlen, int length, int fd );
-static void forward_respond (struct sockaddr *from, int fromlen, int length, int fd);
-static void manage( struct sockaddr *from, int fromlen, int length, int fd );
-static void query_respond( struct sockaddr *from, int fromlen, int length, int fd );
-static void request_respond( struct sockaddr *from, int fromlen, int length, int fd );
-static void send_accept( struct sockaddr *to, int tolen, CARD32 sessionID, ARRAY8Ptr authenticationName, ARRAY8Ptr authenticationData, ARRAY8Ptr authorizationName, ARRAY8Ptr authorizationData, int fd );
-static void send_alive( struct sockaddr *from, int fromlen, int length, int fd );
-static void send_decline( struct sockaddr *to, int tolen, ARRAY8Ptr authenticationName, ARRAY8Ptr authenticationData, ARRAY8Ptr status, int fd );
-static void send_failed( struct sockaddr *from, int fromlen, const char *name, CARD32 sessionID, const char *reason, int fd );
-static void send_refuse( struct sockaddr *from, int fromlen, CARD32 sessionID, int fd );
-static void send_unwilling( struct sockaddr *from, int fromlen, ARRAY8Ptr authenticationName, ARRAY8Ptr status, int fd );
-static void send_willing( struct sockaddr *from, int fromlen, ARRAY8Ptr authenticationName, ARRAY8Ptr status, int fd );
-
-
-static XdmcpBuffer buffer;
-
-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
-ClientAddress( struct sockaddr *from,
- ARRAY8Ptr addr, /* return */
- ARRAY8Ptr port, /* return */
- CARD16 *type ) /* return */
-{
- int length, family;
- char *data;
-
- data = NetaddrPort( (XdmcpNetaddr)from, &length );
- XdmcpAllocARRAY8( port, length );
- memmove( port->data, data, length );
- port->length = length;
-
- family = ConvertAddr( (XdmcpNetaddr)from, &length, &data );
- XdmcpAllocARRAY8( addr, length );
- memmove( addr->data, data, length );
- addr->length = length;
-
- *type = family;
-}
-
-static void
-all_query_respond( struct sockaddr *from, int fromlen,
- ARRAYofARRAY8Ptr authenticationNames,
- xdmOpCode type, int fd )
-{
- ARRAY8Ptr authenticationName;
- ARRAY8 status;
- ARRAY8 addr;
- CARD16 connectionType;
- int family;
- int length;
-
- family = ConvertAddr( (XdmcpNetaddr)from, &length, &(addr.data) );
- addr.length = length; /* convert int to short */
- Debug( "all_query_respond: conntype=%d, addr=%02[*:hhx\n",
- family, addr.length, addr.data );
- if (family < 0)
- return;
- connectionType = family;
-
- if (type == INDIRECT_QUERY)
- RememberIndirectClient( &addr, connectionType );
- else
- ForgetIndirectClient( &addr, connectionType );
-
- authenticationName = ChooseAuthentication( authenticationNames );
- if (Willing( &addr, connectionType, authenticationName, &status, type ))
- send_willing( from, fromlen, authenticationName, &status, fd );
- else
- if (type == QUERY)
- send_unwilling( from, fromlen, authenticationName, &status, fd );
- XdmcpDisposeARRAY8( &status );
-}
-
-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 );
-}
-
-void
-ProcessRequestSocket( int fd )
-{
- XdmcpHeader header;
-#if defined(IPv6) && defined(AF_INET6)
- struct sockaddr_storage addr;
-#else
- struct sockaddr addr;
-#endif
- int addrlen = sizeof(addr);
-
- Debug( "ProcessRequestSocket\n" );
- bzero( (char *)&addr, sizeof(addr) );
- if (!XdmcpFill( fd, &buffer, (XdmcpNetaddr)&addr, &addrlen )) {
- Debug( "XdmcpFill failed\n" );
- return;
- }
- if (!XdmcpReadHeader( &buffer, &header )) {
- Debug( "XdmcpReadHeader failed\n" );
- return;
- }
- if (header.version != XDM_PROTOCOL_VERSION) {
- Debug( "XDMCP header version read was %d, expected %d\n",
- header.version, XDM_PROTOCOL_VERSION );
- return;
- }
- Debug( "header: %d %d %d\n", header.version, header.opcode, header.length );
- switch (header.opcode) {
- case BROADCAST_QUERY:
- broadcast_respond( (struct sockaddr *)&addr, addrlen, header.length, fd );
- break;
- case QUERY:
- query_respond( (struct sockaddr *)&addr, addrlen, header.length, fd );
- break;
- case INDIRECT_QUERY:
- indirect_respond( (struct sockaddr *)&addr, addrlen, header.length, fd );
- break;
- case FORWARD_QUERY:
- forward_respond ((struct sockaddr *)&addr, addrlen, header.length, fd);
- break;
- case REQUEST:
- request_respond( (struct sockaddr *)&addr, addrlen, header.length, fd );
- break;
- case MANAGE:
- manage( (struct sockaddr *)&addr, addrlen, header.length, fd );
- break;
- case KEEPALIVE:
- send_alive( (struct sockaddr *)&addr, addrlen, header.length, fd );
- break;
- }
-}
-
-/*
- * respond to a request on the UDP socket.
- */
-
-static void
-direct_query_respond( struct sockaddr *from, int fromlen,
- int length, xdmOpCode type, int fd )
-{
- ARRAYofARRAY8 queryAuthenticationNames;
- int expectedLen;
- int i;
-
- if (!XdmcpReadARRAYofARRAY8( &buffer, &queryAuthenticationNames ))
- return;
- expectedLen = 1;
- for (i = 0; i < (int)queryAuthenticationNames.length; i++)
- expectedLen += 2 + queryAuthenticationNames.data[i].length;
- if (length == expectedLen)
- all_query_respond( from, fromlen, &queryAuthenticationNames, type, fd );
- XdmcpDisposeARRAYofARRAY8( &queryAuthenticationNames );
-}
-
-static void
-query_respond( struct sockaddr *from, int fromlen, int length, int fd )
-{
- Debug( "<query> respond %d\n", length );
- direct_query_respond( from, fromlen, length, QUERY, fd );
-}
-
-static void
-broadcast_respond( struct sockaddr *from, int fromlen, int length, int fd )
-{
- direct_query_respond( from, fromlen, length, BROADCAST_QUERY, fd );
-}
-
-/* computes an X display name */
-
-static char *
-NetworkAddressToName( CARD16 connectionType, ARRAY8Ptr connectionAddress,
- struct sockaddr *originalAddress, CARD16 displayNumber )
-{
- switch (connectionType) {
- case FamilyInternet:
-#if defined(IPv6) && defined(AF_INET6)
- case FamilyInternet6:
-#endif
- {
- CARD8 *data;
- struct hostent *hostent;
- char *hostname = NULL;
- char *name;
- const char *localhost;
- int multiHomed = 0;
- int type;
-#if defined(IPv6) && defined(AF_INET6)
- struct addrinfo *ai = NULL, *nai, hints;
- char dotted[INET6_ADDRSTRLEN];
-
- if (connectionType == FamilyInternet6)
- type = AF_INET6;
- else
-#endif
- type = AF_INET;
-
- data = connectionAddress->data;
- hostent = gethostbyaddr( (char *)data,
- connectionAddress->length, type );
- if (hostent) {
- if (sourceAddress) {
-#if defined(IPv6) && defined(AF_INET6)
- bzero( &hints, sizeof(hints) );
- hints.ai_flags = AI_CANONNAME;
- if (!getaddrinfo( hostent->h_name, NULL, &hints, &ai )) {
- hostname = ai->ai_canonname;
- for (nai = ai->ai_next; nai; nai = nai->ai_next)
- if (ai->ai_protocol == nai->ai_protocol &&
- memcmp( ai->ai_addr, nai->ai_addr,
- ai->ai_addrlen ))
- multiHomed = 1;
- }
-#else
- hostent = gethostbyname( hostent->h_name );
- if (hostent && hostent->h_addrtype == AF_INET) {
- multiHomed = hostent->h_addr_list[1] != NULL;
- hostname = hostent->h_name;
- }
-#endif
- } else
- hostname = hostent->h_name;
- }
-
- localhost = localHostname();
-
- /*
- * protect against bogus host names
- */
- if (hostname && *hostname && *hostname != '.' && !multiHomed) {
- if (!strcmp( localhost, hostname ))
- ASPrintf( &name, "localhost:%d", displayNumber );
- else {
- if (removeDomainname) {
- char *remoteDot;
- char *localDot;
-
- /* check for a common domain name. This
- * could reduce names by recognising common
- * super-domain names as well, but I don't think
- * this is as useful, and will confuse more
- * people
- */
- if ((localDot = strchr( localhost, '.' )) &&
- (remoteDot = strchr( hostname, '.' )))
- {
- /* smash the name in place; it won't
- * be needed later.
- */
- if (!strcmp( localDot+1, remoteDot+1 ))
- *remoteDot = '\0';
- }
- }
-
- ASPrintf( &name, "%s:%d", hostname, displayNumber );
- }
- } else {
-#if defined(IPv6) && defined(AF_INET6)
- if (multiHomed) {
- if (connectionType == FamilyInternet) {
- data = (CARD8 *)
- &((struct sockaddr_in *)originalAddress)->sin_addr;
- } else {
- data = (CARD8 *)
- &((struct sockaddr_in6 *)originalAddress)->sin6_addr;
- }
- }
- inet_ntop( type, data, dotted, sizeof(dotted) );
- ASPrintf( &name, "%s:%d", dotted, displayNumber );
-#else
- if (multiHomed)
- data = (CARD8 *)
- &((struct sockaddr_in *)originalAddress)->sin_addr;
- ASPrintf( &name, "%[4|'.'hhu:%d", data, displayNumber );
-#endif
- }
-#if defined(IPv6) && defined(AF_INET6)
- if (ai)
- freeaddrinfo( ai );
-#endif
- return name;
- }
-#ifdef DNET
- case FamilyDECnet:
- return NULL;
-#endif /* DNET */
- default:
- return NULL;
- }
-}
-
-/*ARGSUSED*/
-static void
-forward_respond ( struct sockaddr *from, int fromlen ATTR_UNUSED,
- int length, int fd)
-{
- ARRAY8 clientAddress;
- ARRAY8 clientPort;
- ARRAYofARRAY8 authenticationNames;
- struct sockaddr *client;
- int clientlen;
- int expectedLen;
- int i;
-
- Debug( "<forward> respond %d\n", length );
- clientAddress.length = 0;
- clientAddress.data = 0;
- clientPort.length = 0;
- clientPort.data = 0;
- authenticationNames.length = 0;
- authenticationNames.data = 0;
- if (XdmcpReadARRAY8( &buffer, &clientAddress ) &&
- XdmcpReadARRAY8( &buffer, &clientPort ) &&
- XdmcpReadARRAYofARRAY8( &buffer, &authenticationNames ))
- {
- expectedLen = 0;
- expectedLen += 2 + clientAddress.length;
- expectedLen += 2 + clientPort.length;
- expectedLen += 1; /* authenticationNames */
- for (i = 0; i < (int)authenticationNames.length; i++)
- expectedLen += 2 + authenticationNames.data[i].length;
- if (length == expectedLen) {
- int j;
-
- j = 0;
- for (i = 0; i < (int)clientPort.length; i++)
- j = j * 256 + clientPort.data[i];
- Debug( "<forward> client address (port %d) %[*hhu\n", j,
- clientAddress.length, clientAddress.data );
- switch (from->sa_family) {
-#ifdef AF_INET
- case AF_INET:
- {
- struct sockaddr_in in_addr;
-
- if (clientAddress.length != 4 || clientPort.length != 2)
- goto badAddress;
- 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;
- memmove( &in_addr.sin_addr, clientAddress.data, 4 );
- memmove( (char *)&in_addr.sin_port, clientPort.data, 2 );
- client = (struct sockaddr *)&in_addr;
- clientlen = sizeof(in_addr);
- all_query_respond( client, clientlen, &authenticationNames,
- FORWARD_QUERY, fd );
- }
- break;
-#endif
-#if defined(IPv6) && defined(AF_INET6)
- case AF_INET6:
- {
- struct sockaddr_in6 in6_addr;
-
- if (clientAddress.length != 16 || clientPort.length != 2)
- goto badAddress;
- bzero( (char *)&in6_addr, sizeof(in6_addr) );
-#ifdef SIN6_LEN
- in6_addr.sin6_len = sizeof(in6_addr);
-#endif
- in6_addr.sin6_family = AF_INET6;
- memmove( &in6_addr,clientAddress.data,clientAddress.length );
- memmove( (char *)&in6_addr.sin6_port, clientPort.data, 2 );
- client = (struct sockaddr *)&in6_addr;
- clientlen = sizeof(in6_addr);
- all_query_respond( client, clientlen, &authenticationNames,
- FORWARD_QUERY, fd );
- }
- break;
-#endif
-#ifdef AF_UNIX
- case AF_UNIX:
- {
- struct sockaddr_un un_addr;
-
- if (clientAddress.length >= sizeof(un_addr.sun_path))
- goto badAddress;
- bzero( (char *)&un_addr, sizeof(un_addr) );
- un_addr.sun_family = AF_UNIX;
- memmove( un_addr.sun_path, clientAddress.data, clientAddress.length );
- un_addr.sun_path[clientAddress.length] = '\0';
- client = (struct sockaddr *)&un_addr;
-#if defined(HAVE_STRUCT_SOCKADDR_IN_SIN_LEN) && !defined(__Lynx__) && defined(UNIXCONN)
- un_addr.sun_len = strlen( un_addr.sun_path );
- clientlen = SUN_LEN( &un_addr );
-#else
- clientlen = sizeof(un_addr);
-#endif
- all_query_respond( client, clientlen, &authenticationNames,
- FORWARD_QUERY, fd );
- }
- break;
-#endif
-#ifdef AF_CHAOS
- case AF_CHAOS:
- goto badAddress;
-#endif
-#ifdef AF_DECnet
- case AF_DECnet:
- goto badAddress;
-#endif
- }
- } else
- Debug( "<forward> length error got %d expect %d\n", length, expectedLen );
- }
- badAddress:
- XdmcpDisposeARRAY8( &clientAddress );
- XdmcpDisposeARRAY8( &clientPort );
- XdmcpDisposeARRAYofARRAY8( &authenticationNames );
-}
-
-static ARRAY8 Hostname;
-
-static void
-send_willing( struct sockaddr *from, int fromlen,
- ARRAY8Ptr authenticationName, ARRAY8Ptr status, int fd )
-{
- XdmcpHeader header;
-
- Debug( "send <willing> %.*s %.*s\n", authenticationName->length,
- authenticationName->data,
- status->length,
- status->data );
- header.version = XDM_PROTOCOL_VERSION;
- header.opcode = (CARD16)WILLING;
- header.length =
- 6 + authenticationName->length + Hostname.length + status->length;
- XdmcpWriteHeader( &buffer, &header );
- XdmcpWriteARRAY8( &buffer, authenticationName );
- XdmcpWriteARRAY8( &buffer, &Hostname );
- XdmcpWriteARRAY8( &buffer, status );
- 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 unsigned long globalSessionID;
-
-#define NextSessionID() (++globalSessionID)
-
-void init_session_id( void )
-{
- /* Set randomly so we are unlikely to reuse id's from a previous
- * incarnation so we don't say "Alive" to those displays.
- * Start with low digits 0 to make debugging easier.
- */
- globalSessionID = (time( (Time_t *)0 ) & 0x7fff) * 16000;
-
- Hostname.data = (char *)localHostname();
- Hostname.length = strlen( Hostname.data );
-}
-
-static ARRAY8 outOfMemory = { (CARD16)13, (CARD8Ptr)"Out of memory" };
-static ARRAY8 noValidAddr = { (CARD16)16, (CARD8Ptr)"No valid address" };
-static ARRAY8 noValidAuth = { (CARD16)22, (CARD8Ptr)"No valid authorization" };
-static ARRAY8 noAuthentic = { (CARD16)29, (CARD8Ptr)"XDM has no authentication key" };
-
-static void
-request_respond( struct sockaddr *from, int fromlen, int length, int fd )
-{
- CARD16 displayNumber;
- ARRAY16 connectionTypes;
- ARRAYofARRAY8 connectionAddresses;
- ARRAY8 authenticationName;
- ARRAY8 authenticationData;
- ARRAYofARRAY8 authorizationNames;
- ARRAY8 manufacturerDisplayID;
- ARRAY8Ptr reason = 0;
- int expectlen;
- int i, j;
- struct protoDisplay *pdpy;
- ARRAY8 authorizationName, authorizationData;
- ARRAY8Ptr connectionAddress;
-
- Debug( "<request> respond %d\n", length );
- connectionTypes.data = 0;
- connectionAddresses.data = 0;
- authenticationName.data = 0;
- authenticationData.data = 0;
- authorizationNames.data = 0;
- authorizationName.length = 0;
- authorizationData.length = 0;
- manufacturerDisplayID.data = 0;
- if (XdmcpReadCARD16( &buffer, &displayNumber ) &&
- XdmcpReadARRAY16( &buffer, &connectionTypes ) &&
- XdmcpReadARRAYofARRAY8( &buffer, &connectionAddresses ) &&
- XdmcpReadARRAY8( &buffer, &authenticationName ) &&
- XdmcpReadARRAY8( &buffer, &authenticationData ) &&
- XdmcpReadARRAYofARRAY8( &buffer, &authorizationNames ) &&
- XdmcpReadARRAY8( &buffer, &manufacturerDisplayID ))
- {
- expectlen = 0;
- expectlen += 2; /* displayNumber */
- expectlen += 1 + 2 * connectionTypes.length; /* connectionTypes */
- expectlen += 1; /* connectionAddresses */
- for (i = 0; i < (int)connectionAddresses.length; i++)
- expectlen += 2 + connectionAddresses.data[i].length;
- expectlen += 2 + authenticationName.length; /* authenticationName */
- expectlen += 2 + authenticationData.length; /* authenticationData */
- expectlen += 1; /* authoriationNames */
- for (i = 0; i < (int)authorizationNames.length; i++)
- expectlen += 2 + authorizationNames.data[i].length;
- expectlen += 2 + manufacturerDisplayID.length; /* displayID */
- if (expectlen != length) {
- Debug( "<request> length error got %d expect %d\n",
- length, expectlen );
- goto abort;
- }
- if (connectionTypes.length == 0 ||
- connectionAddresses.length != connectionTypes.length)
- {
- reason = &noValidAddr;
- pdpy = 0;
- goto decline;
- }
- pdpy = FindProtoDisplay( (XdmcpNetaddr)from, fromlen, displayNumber );
- if (!pdpy) {
-
- /* Check this Display against the Manager's policy */
- reason = Accept( from, fromlen, displayNumber );
- if (reason)
- goto decline;
-
- /* Check the Display's stream services against Manager's policy */
- i = SelectConnectionTypeIndex( &connectionTypes,
- &connectionAddresses );
- if (i < 0) {
- reason = &noValidAddr;
- goto decline;
- }
-
- /* The Manager considers this a new session */
- connectionAddress = &connectionAddresses.data[i];
- pdpy = NewProtoDisplay( (XdmcpNetaddr)from, fromlen, displayNumber,
- connectionTypes.data[i], connectionAddress,
- NextSessionID() );
- Debug( "NewProtoDisplay %p\n", pdpy );
- if (!pdpy) {
- reason = &outOfMemory;
- goto decline;
- }
- }
- if (authorizationNames.length == 0)
- j = 0;
- else
- j = SelectAuthorizationTypeIndex( &authenticationName,
- &authorizationNames );
- if (j < 0) {
- reason = &noValidAuth;
- goto decline;
- }
- if (!CheckAuthentication( pdpy,
- &manufacturerDisplayID,
- &authenticationName,
- &authenticationData ))
- {
- reason = &noAuthentic;
- goto decline;
- }
- if (j < (int)authorizationNames.length) {
- Xauth *auth;
- SetProtoDisplayAuthorization( pdpy,
- (unsigned short)authorizationNames.data[j].length,
- (char *)authorizationNames.data[j].data );
- auth = pdpy->xdmcpAuthorization;
- if (!auth)
- auth = pdpy->fileAuthorization;
- if (auth) {
- authorizationName.length = auth->name_length;
- authorizationName.data = (CARD8Ptr) auth->name;
- authorizationData.length = auth->data_length;
- authorizationData.data = (CARD8Ptr) auth->data;
- }
- }
- if (pdpy) {
- send_accept( from, fromlen, pdpy->sessionID,
- &authenticationName,
- &authenticationData,
- &authorizationName,
- &authorizationData, fd );
- } else {
- decline:
- send_decline( from, fromlen, &authenticationName,
- &authenticationData,
- reason, fd );
- if (pdpy)
- DisposeProtoDisplay( pdpy );
- }
- }
- abort:
- XdmcpDisposeARRAY16( &connectionTypes );
- XdmcpDisposeARRAYofARRAY8( &connectionAddresses );
- XdmcpDisposeARRAY8( &authenticationName );
- XdmcpDisposeARRAY8( &authenticationData );
- XdmcpDisposeARRAYofARRAY8( &authorizationNames );
- XdmcpDisposeARRAY8( &manufacturerDisplayID );
-}
-
-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_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
-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 );
-}
-
-void
-SendFailed( struct display *d, const char *reason )
-{
- Debug( "display start failed, sending <failed>\n" );
- send_failed( (struct sockaddr *)(d->from.data), d->from.length, d->name,
- d->sessionID, reason, d->xdmcpFd );
-}
-
-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_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_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 );
- }
- }
-}
-
-char *
-NetworkAddressToHostname( CARD16 connectionType, ARRAY8Ptr connectionAddress )
-{
- switch (connectionType) {
- case FamilyInternet:
-#if defined(IPv6) && defined(AF_INET6)
- case FamilyInternet6:
-#endif
- {
- struct hostent *he;
- char *name, *lname;
- char *myDot;
- int af_type;
-#if defined(IPv6) && defined(AF_INET6)
- char dotted[INET6_ADDRSTRLEN];
-
- if (connectionType == FamilyInternet6)
- af_type = AF_INET6;
- else
-#endif
- af_type = AF_INET;
-
- he = gethostbyaddr( (char *)connectionAddress->data,
- connectionAddress->length, af_type );
- if (he) {
-#if defined(IPv6) && defined(AF_INET6)
- struct addrinfo *ai, *nai;
- if (!getaddrinfo( he->h_name, NULL, NULL, &ai )) {
- for (nai = ai; nai; nai = nai->ai_next) {
- if (af_type == nai->ai_family &&
- !memcmp( nai->ai_family == AF_INET ?
- (char *)&((struct sockaddr_in *)nai->ai_addr)->sin_addr :
- (char *)&((struct sockaddr_in6 *)nai->ai_addr)->sin6_addr,
- connectionAddress->data,
- connectionAddress->length ))
- {
- freeaddrinfo( ai );
- goto oki;
- }
- }
- freeaddrinfo( ai );
-#else
- if ((he = gethostbyname( he->h_name )) &&
- he->h_addrtype == AF_INET)
- {
- int i;
- for (i = 0; he->h_addr_list[i]; i++)
- if (!memcmp( he->h_addr_list[i],
- connectionAddress->data, 4 ))
- goto oki;
-#endif
- LogError( "DNS spoof attempt or misconfigured resolver.\n" );
- }
- goto gotnone;
- oki:
- if (StrDup( &name, he->h_name ) &&
- !strchr( name, '.' ) &&
- (myDot = strchr( localHostname(), '.' )))
- {
- if (ASPrintf( &lname, "%s%s", name, myDot )) {
-#if defined(IPv6) && defined(AF_INET6)
- if (!getaddrinfo( lname, NULL, NULL, &ai )) {
- for (nai = ai; nai; nai = nai->ai_next) {
- if (af_type == nai->ai_family &&
- !memcmp( nai->ai_family == AF_INET ?
- (char *)&((struct sockaddr_in *)nai->ai_addr)->sin_addr :
- (char *)&((struct sockaddr_in6 *)nai->ai_addr)->sin6_addr,
- connectionAddress->data,
- connectionAddress->length ))
- {
- freeaddrinfo( ai );
- free( name );
- return lname;
- }
- }
- freeaddrinfo( ai );
- }
-#else
- if ((he = gethostbyname( lname )) &&
- he->h_addrtype == AF_INET)
- {
- int i;
- for (i = 0; he->h_addr_list[i]; i++)
- if (!memcmp( he->h_addr_list[i],
- connectionAddress->data, 4 ))
- {
- free( name );
- return lname;
- }
- }
-#endif
- free( lname );
- }
- }
- } else {
- gotnone:
- /* can't get name, so use emergency fallback */
-#if defined(IPv6) && defined(AF_INET6)
- inet_ntop( af_type, connectionAddress->data,
- dotted, sizeof(dotted) );
- StrDup( &name, dotted );
-#else
- ASPrintf( &name, "%[4|'.'hhu", connectionAddress->data );
-#endif
- LogWarn( "Cannot convert Internet address %s to host name\n",
- name );
- }
- return name;
- }
-#ifdef DNET
- case FamilyDECnet:
- break;
-#endif /* DNET */
- default:
- break;
- }
- return 0;
-}
-
-#endif /* XDMCP */
-
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-28 09:36:07 +0000