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author | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2012-01-22 01:02:36 -0600 |
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committer | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2012-01-22 01:02:36 -0600 |
commit | b81e43465b14836b17e4fe2dea91c78a2bdd29b3 (patch) | |
tree | 7815d61ce59a6ccb6e655ed44f5fea786f520985 /kdm/backend/access.c | |
parent | 7021f40c13f949b7cb5ded32d0241d648a43bf6c (diff) | |
download | tdebase-b81e43465b14836b17e4fe2dea91c78a2bdd29b3.tar.gz tdebase-b81e43465b14836b17e4fe2dea91c78a2bdd29b3.zip |
Part 2 of prior commit
Diffstat (limited to 'kdm/backend/access.c')
-rw-r--r-- | kdm/backend/access.c | 468 |
1 files changed, 0 insertions, 468 deletions
diff --git a/kdm/backend/access.c b/kdm/backend/access.c deleted file mode 100644 index 82736be57..000000000 --- a/kdm/backend/access.c +++ /dev/null @@ -1,468 +0,0 @@ -/* - -Copyright 1990, 1998 The Open Group -Copyright 2001,2004 Oswald Buddenhagen <ossi@kde.org> -Copyright 2002 Sun Microsystems, Inc. All rights reserved. - -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 - * - * Access control for XDMCP - keep a database of allowable display addresses - * and (potentially) a list of hosts to send ForwardQuery packets to - */ - -#include <config.h> - -#ifdef XDMCP - -#include "dm.h" -#include "dm_error.h" -#include "dm_socket.h" - -#include <stdio.h> -#include <ctype.h> - -#include <netdb.h> -#if defined(IPv6) && defined(AF_INET6) -# include <arpa/inet.h> -#endif - -typedef struct { - short int type; - union { - char *aliasPattern; - char *hostPattern; - struct _displayAddress { - CARD16 connectionType; - ARRAY8 hostAddress; - } displayAddress; - } entry; -} HostEntry; - -typedef struct { - short int iface; - short int mcasts; - short int nmcasts; -} ListenEntry; - -typedef struct { - char *name; - short int hosts; - short int nhosts; -} AliasEntry; - -typedef struct { - short int entries; - short int nentries; - short int hosts; - short int nhosts; - short int flags; -} AclEntry; - -typedef struct { - HostEntry *hostList; - ListenEntry *listenList; - AliasEntry *aliasList; - AclEntry *acList; - short int nHosts, nListens, nAliases, nAcls; - CfgDep dep; -} AccArr; - -static AccArr accData[1]; - - -static ARRAY8 localAddress; - -ARRAY8Ptr -getLocalAddress( void ) -{ - static int haveLocalAddress; - - if (!haveLocalAddress) { -#if defined(IPv6) && defined(AF_INET6) - struct addrinfo *ai; - - if (getaddrinfo( localHostname(), NULL, NULL, &ai )) { - XdmcpAllocARRAY8( &localAddress, 4 ); - localAddress.data[0] = 127; - localAddress.data[1] = 0; - localAddress.data[2] = 0; - localAddress.data[3] = 1; - } else { - if (ai->ai_family == AF_INET) { - XdmcpAllocARRAY8( &localAddress, sizeof(struct in_addr) ); - memcpy( localAddress.data, - &((struct sockaddr_in *)ai->ai_addr)->sin_addr, - sizeof(struct in_addr) ); - } else /* if (ai->ai_family == AF_INET6) */ { - XdmcpAllocARRAY8( &localAddress, sizeof(struct in6_addr) ); - memcpy( localAddress.data, - &((struct sockaddr_in6 *)ai->ai_addr)->sin6_addr, - sizeof(struct in6_addr) ); - } - freeaddrinfo( ai ); -#else - struct hostent *hostent; - - if ((hostent = gethostbyname( localHostname() ))) { - XdmcpAllocARRAY8( &localAddress, hostent->h_length ); - memmove( localAddress.data, hostent->h_addr, hostent->h_length ); -#endif - haveLocalAddress = 1; - } - } - return &localAddress; -} - - -void -ScanAccessDatabase( int force ) -{ - struct _displayAddress *da; - char *cptr; - int nChars, i; - - Debug( "ScanAccessDatabase\n" ); - if (Setjmp( cnftalk.errjmp )) - return; /* may memleak */ - if (startConfig( GC_gXaccess, &accData->dep, force ) <= 0) - return; - if (accData->hostList) - free( accData->hostList ); - accData->nHosts = GRecvInt(); - accData->nListens = GRecvInt(); - accData->nAliases = GRecvInt(); - accData->nAcls = GRecvInt(); - nChars = GRecvInt(); - if (!(accData->hostList = (HostEntry *) - Malloc( accData->nHosts * sizeof(HostEntry) + - accData->nListens * sizeof(ListenEntry) + - accData->nAliases * sizeof(AliasEntry) + - accData->nAcls * sizeof(AclEntry) + - nChars ))) - { - CloseGetter(); - return; - } - accData->listenList = (ListenEntry *)(accData->hostList + accData->nHosts); - accData->aliasList = (AliasEntry *)(accData->listenList + accData->nListens); - accData->acList = (AclEntry *)(accData->aliasList + accData->nAliases); - cptr = (char *)(accData->acList + accData->nAcls); - for (i = 0; i < accData->nHosts; i++) { - switch ((accData->hostList[i].type = GRecvInt())) { - case HOST_ALIAS: - accData->hostList[i].entry.aliasPattern = cptr; - cptr += GRecvStrBuf( cptr ); - break; - case HOST_PATTERN: - accData->hostList[i].entry.hostPattern = cptr; - cptr += GRecvStrBuf( cptr ); - break; - case HOST_ADDRESS: - da = &accData->hostList[i].entry.displayAddress; - da->hostAddress.data = (unsigned char *)cptr; - cptr += (da->hostAddress.length = GRecvArrBuf( cptr )); - switch (GRecvInt()) - { -#ifdef AF_INET - case AF_INET: - da->connectionType = FamilyInternet; - break; -#endif -#if defined(IPv6) && defined(AF_INET6) - case AF_INET6: - da->connectionType = FamilyInternet6; - break; -#endif -#ifdef AF_DECnet - case AF_DECnet: - da->connectionType = FamilyDECnet; - break; -#endif -/*#ifdef AF_UNIX - case AF_UNIX: -#endif*/ - default: - da->connectionType = FamilyLocal; - break; - } - break; - case HOST_BROADCAST: - break; - default: - LogError( "Received unknown host type %d from config reader\n", accData->hostList[i].type ); - return; - } - } - for (i = 0; i < accData->nListens; i++) { - accData->listenList[i].iface = GRecvInt(); - accData->listenList[i].mcasts = GRecvInt(); - accData->listenList[i].nmcasts = GRecvInt(); - } - for (i = 0; i < accData->nAliases; i++) { - accData->aliasList[i].name = cptr; - cptr += GRecvStrBuf( cptr ); - accData->aliasList[i].hosts = GRecvInt(); - accData->aliasList[i].nhosts = GRecvInt(); - } - for (i = 0; i < accData->nAcls; i++) { - accData->acList[i].entries = GRecvInt(); - accData->acList[i].nentries = GRecvInt(); - accData->acList[i].hosts = GRecvInt(); - accData->acList[i].nhosts = GRecvInt(); - accData->acList[i].flags = GRecvInt(); - } -} - - -/* Returns non-0 if string is matched by pattern. Does case folding. - */ -static int -patternMatch( const char *string, const char *pattern ) -{ - int p, s; - - if (!string) - string = ""; - - for (;;) { - s = *string++; - switch (p = *pattern++) { - case '*': - if (!*pattern) - return 1; - for (string--; *string; string++) - if (patternMatch( string, pattern )) - return 1; - return 0; - case '?': - if (s == '\0') - return 0; - break; - case '\0': - return s == '\0'; - case '\\': - p = *pattern++; - /* fall through */ - default: - if (tolower( p ) != tolower( s )) - return 0; - } - } -} - - -#define MAX_DEPTH 32 - -static void -scanHostlist( int fh, int nh, - ARRAY8Ptr clientAddress, CARD16 connectionType, - ChooserFunc function, char *closure, - int broadcast, int *haveLocalhost ) -{ - HostEntry *h; - AliasEntry *a; - int na; - - for (h = accData->hostList + fh; nh; nh--, h++) { - switch (h->type) { - case HOST_ALIAS: - for (a = accData->aliasList, na = accData->nAliases; na; na--, a++) - if (patternMatch( a->name, h->entry.aliasPattern )) /* XXX originally swapped, no wildcards in alias name matching */ - scanHostlist( a->hosts, a->nhosts, - clientAddress, connectionType, - function, closure, broadcast, - haveLocalhost ); - break; - case HOST_ADDRESS: - if (XdmcpARRAY8Equal( getLocalAddress(), &h->entry.displayAddress.hostAddress )) - *haveLocalhost = 1; - else if (function) - (*function)( connectionType, &h->entry.displayAddress.hostAddress, closure ); - break; - case HOST_BROADCAST: - if (broadcast && function) - (*function)( FamilyBroadcast, 0, closure ); - break; - default: - break; - } - } -} - -static int -scanEntrylist( int fh, int nh, - ARRAY8Ptr clientAddress, CARD16 connectionType, - char **clientName ) -{ - HostEntry *h; - AliasEntry *a; - int na; - - for (h = accData->hostList + fh; nh; nh--, h++) { - switch (h->type) { - case HOST_ALIAS: - for (a = accData->aliasList, na = accData->nAliases; na; na--, a++) - if (patternMatch( a->name, h->entry.aliasPattern )) - if (scanEntrylist( a->hosts, a->nhosts, - clientAddress, connectionType, - clientName )) - return 1; - break; - case HOST_PATTERN: - if (!*clientName) - *clientName = NetworkAddressToHostname( connectionType, - clientAddress ); - if (patternMatch( *clientName, h->entry.hostPattern )) - return 1; - break; - case HOST_ADDRESS: - if (h->entry.displayAddress.connectionType == connectionType && - XdmcpARRAY8Equal( &h->entry.displayAddress.hostAddress, - clientAddress )) - return 1; - break; - default: - break; - } - } - return 0; -} - -static AclEntry * -matchAclEntry( ARRAY8Ptr clientAddress, CARD16 connectionType, int direct ) -{ - AclEntry *e, *re; - char *clientName = 0; - int ne; - - for (e = accData->acList, ne = accData->nAcls, re = 0; ne; ne--, e++) - if (!e->nhosts == direct) - if (scanEntrylist( e->entries, e->nentries, - clientAddress, connectionType, - &clientName )) - { - re = e; - break; - } - if (clientName) - free( clientName ); - return re; -} - -/* - * calls the given function for each valid indirect entry. Returns TRUE if - * the local host exists on any of the lists, else FALSE - */ -int -ForEachMatchingIndirectHost( ARRAY8Ptr clientAddress, - CARD16 connectionType, - ChooserFunc function, char *closure ) -{ - AclEntry *e; - int haveLocalhost = 0; - - e = matchAclEntry( clientAddress, connectionType, 0 ); - if (e && !(e->flags & a_notAllowed)) { - if (e->flags & a_useChooser) { - ARRAY8Ptr choice; - - choice = IndirectChoice( clientAddress, connectionType ); - if (!choice || XdmcpARRAY8Equal( getLocalAddress(), choice )) - haveLocalhost = 1; - else - (*function)( connectionType, choice, closure ); - } else - scanHostlist( e->hosts, e->nhosts, clientAddress, connectionType, - function, closure, FALSE, &haveLocalhost ); - } - return haveLocalhost; -} - -int -UseChooser( ARRAY8Ptr clientAddress, CARD16 connectionType ) -{ - AclEntry *e; - - e = matchAclEntry( clientAddress, connectionType, 0 ); - return e && !(e->flags & a_notAllowed) && (e->flags & a_useChooser) && - !IndirectChoice( clientAddress, connectionType ); -} - -void -ForEachChooserHost( ARRAY8Ptr clientAddress, CARD16 connectionType, - ChooserFunc function, char *closure ) -{ - AclEntry *e; - int haveLocalhost = 0; - - e = matchAclEntry( clientAddress, connectionType, 0 ); - if (e && !(e->flags & a_notAllowed) && (e->flags & a_useChooser)) - scanHostlist( e->hosts, e->nhosts, clientAddress, connectionType, - function, closure, TRUE, &haveLocalhost ); - if (haveLocalhost) - (*function)( connectionType, getLocalAddress(), closure ); -} - -/* - * returns TRUE if the given client is acceptable to the local host. The - * given display client is acceptable if it occurs without a host list. - */ -int -AcceptableDisplayAddress( ARRAY8Ptr clientAddress, CARD16 connectionType, - xdmOpCode type ) -{ - AclEntry *e; - - if (type == INDIRECT_QUERY) - return 1; - - e = matchAclEntry( clientAddress, connectionType, 1 ); - return e && !(e->flags & a_notAllowed) && - (type != BROADCAST_QUERY || !(e->flags & a_notBroadcast)); -} - -void -ForEachListenAddr( ListenFunc listenfunction, ListenFunc mcastfunction, - void **closure ) -{ - int i, j, ifc, mc, nmc; - - for (i = 0; i < accData->nListens; i++) { - ifc = accData->listenList[i].iface; - (*listenfunction)( ifc < 0 ? 0 : - &accData->hostList[ifc].entry.displayAddress.hostAddress, - closure ); - mc = accData->listenList[i].mcasts; - nmc = accData->listenList[i].nmcasts; - for (j = 0; j < nmc; j++, mc++) - (*mcastfunction)( &accData->hostList[mc].entry.displayAddress.hostAddress, - closure ); - } -} -#endif /* XDMCP */ |