/* Copyright 1988, 1998 The Open Group 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 * * manage a collection of proto-displays. These are displays for * which sessionID's have been generated, but no session has been * started. */ #include <config.h> #ifdef XDMCP #include "dm.h" #include "dm_error.h" static struct protoDisplay *protoDisplays; struct protoDisplay * FindProtoDisplay( XdmcpNetaddr address, int addrlen, CARD16 displayNumber ) { struct protoDisplay *pdpy; Debug( "FindProtoDisplay\n" ); for (pdpy = protoDisplays; pdpy; pdpy=pdpy->next) { if (pdpy->displayNumber == displayNumber && addressEqual( address, addrlen, pdpy->address, pdpy->addrlen )) { return pdpy; } } return (struct protoDisplay *)0; } static void TimeoutProtoDisplays (void) { struct protoDisplay *pdpy, *next; for (pdpy = protoDisplays; pdpy; pdpy = next) { next = pdpy->next; if (pdpy->date < (unsigned long)(now - PROTO_TIMEOUT)) DisposeProtoDisplay( pdpy ); } } struct protoDisplay * NewProtoDisplay( XdmcpNetaddr address, int addrlen, CARD16 displayNumber, CARD16 connectionType, ARRAY8Ptr connectionAddress, CARD32 sessionID ) { struct protoDisplay *pdpy; Debug( "NewProtoDisplay\n" ); TimeoutProtoDisplays (); pdpy = (struct protoDisplay *)Malloc( sizeof(*pdpy) ); if (!pdpy) return NULL; pdpy->address = (XdmcpNetaddr)Malloc( addrlen ); if (!pdpy->address) { free( (char *)pdpy ); return NULL; } pdpy->addrlen = addrlen; memmove( pdpy->address, address, addrlen ); pdpy->displayNumber = displayNumber; pdpy->connectionType = connectionType; pdpy->date = now; if (!XdmcpCopyARRAY8( connectionAddress, &pdpy->connectionAddress )) { free( (char *)pdpy->address ); free( (char *)pdpy ); return NULL; } pdpy->sessionID = sessionID; pdpy->fileAuthorization = (Xauth *)NULL; pdpy->xdmcpAuthorization = (Xauth *)NULL; pdpy->next = protoDisplays; protoDisplays = pdpy; return pdpy; } void DisposeProtoDisplay( pdpy ) struct protoDisplay *pdpy; { struct protoDisplay *p, *prev; prev = 0; for (p = protoDisplays; p; p=p->next) { if (p == pdpy) break; prev = p; } if (!p) return; if (prev) prev->next = pdpy->next; else protoDisplays = pdpy->next; bzero( &pdpy->key, sizeof(pdpy->key) ); if (pdpy->fileAuthorization) XauDisposeAuth( pdpy->fileAuthorization ); if (pdpy->xdmcpAuthorization) XauDisposeAuth( pdpy->xdmcpAuthorization ); XdmcpDisposeARRAY8( &pdpy->connectionAddress ); free( (char *)pdpy->address ); free( (char *)pdpy ); } #endif /* XDMCP */