/*********************************************************** Copyright (c) 1987 X Consortium Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: 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 X CONSORTIUM 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 the X Consortium 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 X Consortium. Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts. All Rights Reserved Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of Digital not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ******************************************************************/ /* $XConsortium: utils.c,v 1.9 94/12/01 20:42:36 mor Exp $ */ /* $NCDId: @(#)utils.c,v 1.8 1994/11/16 02:27:25 lemke Exp $ */ #include "Xos.h" #include #include "misc.h" #include "X.h" #include "input.h" #include "opaque.h" #ifdef X_POSIX_C_SOURCE #define _POSIX_C_SOURCE X_POSIX_C_SOURCE #include #undef _POSIX_C_SOURCE #else #if defined(X_NOT_POSIX) || defined(_POSIX_SOURCE) #include #else #define _POSIX_SOURCE #include #undef _POSIX_SOURCE #endif #endif #ifndef SYSV #include #endif /* lifted from Xt/VarargsI.h */ #if NeedVarargsPrototypes #include #endif #if NeedVarargsPrototypes void VErrorF(char*, va_list); #endif #ifdef SIGNALRETURNSINT #define SIGVAL int #else #define SIGVAL void #endif extern char *display_name; extern char *display; extern Bool PartialNetwork; extern Bool defeatAccessControl; Bool CoreDump; int auditTrailLevel = 1; #ifdef DEBUG #ifndef SPECIAL_MALLOC #define MEMBUG #endif #endif #ifdef MEMBUG #define MEM_FAIL_SCALE 100000 long Memory_fail = 0; #endif Bool Must_have_memory = FALSE; char *dev_tty_from_init = NULL; /* since we need to parse it anyway */ OsSigHandlerPtr OsSignal(sig, handler) int sig; OsSigHandlerPtr handler; { #ifdef X_NOT_POSIX return signal(sig, handler); #else struct sigaction act, oact; sigemptyset(&act.sa_mask); if (handler != SIG_IGN) sigaddset(&act.sa_mask, sig); act.sa_flags = 0; act.sa_handler = handler; sigaction(sig, &act, &oact); return oact.sa_handler; #endif } /* Force connections to close on SIGHUP from init */ SIGVAL AutoResetServer (sig) int sig; { dispatchException |= DE_RESET; isItTimeToYield = TRUE; #ifdef GPROF chdir ("/tmp"); exit (0); #endif #ifdef SYSV signal (SIGHUP, AutoResetServer); #endif } /* Force connections to close and then exit on SIGTERM, SIGINT */ SIGVAL GiveUp(sig) int sig; { dispatchException |= DE_TERMINATE; isItTimeToYield = TRUE; } static void AbortServer() { fflush(stderr); if (CoreDump) abort(); exit (1); } void Error(str) char *str; { perror(str); } #ifndef DDXTIME CARD32 GetTimeInMillis() { struct timeval tp; X_GETTIMEOFDAY(&tp); return(tp.tv_sec * 1000) + (tp.tv_usec / 1000); } #endif AdjustWaitForDelay (waitTime, newdelay) pointer waitTime; unsigned long newdelay; { static struct timeval delay_val; struct timeval **wt = (struct timeval **) waitTime; unsigned long olddelay; if (*wt == NULL) { delay_val.tv_sec = newdelay / 1000; delay_val.tv_usec = 1000 * (newdelay % 1000); *wt = &delay_val; } else { olddelay = (*wt)->tv_sec * 1000 + (*wt)->tv_usec / 1000; if (newdelay < olddelay) { (*wt)->tv_sec = newdelay / 1000; (*wt)->tv_usec = 1000 * (newdelay % 1000); } } } void UseMsg() { #if !defined(AIXrt) && !defined(AIX386) ErrorF("use: lbxproxy [:] [option]\n"); ErrorF("-ac disable access control restrictions\n"); #ifdef MEMBUG ErrorF("-alloc int chance alloc should fail\n"); #endif /* ErrorF("-auth string select authorization file\n"); */ ErrorF("-help prints message with these options\n"); ErrorF("-I ignore all remaining arguments\n"); ErrorF("-to # connection time out\n"); #ifdef XDMCP XdmcpUseMsg(); #endif #endif /* !AIXrt && ! AIX386 */ } /* * This function parses the command line. Handles device-independent fields * and allows ddx to handle additional fields. It is not allowed to modify * argc or any of the strings pointed to by argv. */ void ProcessCommandLine ( argc, argv ) int argc; char *argv[]; { int i, skip; for ( i = 1; i < argc; i++ ) { /* call ddx first, so it can peek/override if it wants */ if(skip = ddxProcessArgument(argc, argv, i)) { i += (skip - 1); } else if(argv[i][0] == ':') { /* initialize display */ display = argv[i]; display++; } else if ( strcmp( argv[i], "-ac") == 0) { defeatAccessControl = TRUE; } #ifdef MEMBUG else if ( strcmp( argv[i], "-alloc") == 0) { if(++i < argc) Memory_fail = atoi(argv[i]); else UseMsg(); } #endif #ifdef old else if ( strcmp( argv[i], "-auth") == 0) { if(++i < argc) InitAuthorization (argv[i]); else UseMsg(); } #endif else if ( strcmp( argv[i], "-display") == 0) { if(++i < argc) display_name = argv[i]; else UseMsg(); } else if ( strcmp( argv[i], "-core") == 0) CoreDump = TRUE; else if ( strcmp( argv[i], "-help") == 0) { UseMsg(); exit(0); } else if ( strcmp( argv[i], "-pn") == 0) PartialNetwork = TRUE; else if ( strcmp( argv[i], "-to") == 0) { if(++i < argc) TimeOutValue = ((long)atoi(argv[i])) * MILLI_PER_SECOND; else UseMsg(); } else if ( strcmp( argv[i], "-terminate") == 0) { extern Bool terminateAtReset; terminateAtReset = TRUE; } else if ( strcmp( argv[i], "-I") == 0) { /* ignore all remaining arguments */ break; } else if (strncmp (argv[i], "tty", 3) == 0) { /* just in case any body is interested */ dev_tty_from_init = argv[i]; } #ifdef XDMCP else if ((skip = XdmcpOptions(argc, argv, i)) != i) { i = skip - 1; } #endif else { UseMsg(); exit (1); } } } /* XALLOC -- X's internal memory allocator. Why does it return unsigned * int * instead of the more common char *? Well, if you read K&R you'll * see they say that alloc must return a pointer "suitable for conversion" * to whatever type you really want. In a full-blown generic allocator * there's no way to solve the alignment problems without potentially * wasting lots of space. But we have a more limited problem. We know * we're only ever returning pointers to structures which will have to * be long word aligned. So we are making a stronger guarantee. It might * have made sense to make Xalloc return char * to conform with people's * expectations of malloc, but this makes lint happier. */ unsigned long * Xalloc (amount) unsigned long amount; { char *malloc(); register pointer ptr; if ((long)amount <= 0) return (unsigned long *)NULL; /* aligned extra on long word boundary */ amount = (amount + 3) & ~3; #ifdef MEMBUG if (!Must_have_memory && Memory_fail && ((random() % MEM_FAIL_SCALE) < Memory_fail)) return (unsigned long *)NULL; #endif if (ptr = (pointer)malloc(amount)) return (unsigned long *)ptr; if (Must_have_memory) FatalError("Out of memory"); return (unsigned long *)NULL; } /***************** * Xcalloc *****************/ unsigned long * Xcalloc (amount) unsigned long amount; { unsigned long *ret; ret = Xalloc (amount); if (ret) bzero ((char *) ret, (int) amount); return ret; } /***************** * Xrealloc *****************/ unsigned long * Xrealloc (ptr, amount) register pointer ptr; unsigned long amount; { char *malloc(); char *realloc(); #ifdef MEMBUG if (!Must_have_memory && Memory_fail && ((random() % MEM_FAIL_SCALE) < Memory_fail)) return (unsigned long *)NULL; #endif if ((long)amount <= 0) { if (ptr && !amount) free(ptr); return (unsigned long *)NULL; } amount = (amount + 3) & ~3; if (ptr) ptr = (pointer)realloc((char *)ptr, amount); else ptr = (pointer)malloc(amount); if (ptr) return (unsigned long *)ptr; if (Must_have_memory) FatalError("Out of memory"); return (unsigned long *)NULL; } /***************** * Xfree * calls free *****************/ void Xfree(ptr) register pointer ptr; { if (ptr) free((char *)ptr); } OsInitAllocator () { #ifdef MEMBUG static int been_here; /* Check the memory system after each generation */ if (been_here) CheckMemory (); else been_here = 1; #endif } /*VARARGS1*/ void AuditF( #if NeedVarargsPrototypes char * f, ...) #else f, s0, s1, s2, s3, s4, s5, s6, s7, s8, s9) /* limit of ten args */ char *f; char *s0, *s1, *s2, *s3, *s4, *s5, *s6, *s7, *s8, *s9; #endif { #ifdef notyet /* ever ? */ #ifdef X_NOT_STDC_ENV long tm; #else time_t tm; #endif char *autime, *s; #if NeedVarargsPrototypes va_list args; #endif if (*f != ' ') { time(&tm); autime = ctime(&tm); if (s = strchr(autime, '\n')) *s = '\0'; if (s = strrchr(argvGlobal[0], '/')) s++; else s = argvGlobal[0]; ErrorF("AUDIT: %s: %d %s: ", autime, getpid(), s); } #if NeedVarargsPrototypes va_start(args, f); VErrorF(f, args); va_end(args); #else ErrorF(f, s0, s1, s2, s3, s4, s5, s6, s7, s8, s9); #endif #endif } /*VARARGS1*/ void FatalError( #if NeedVarargsPrototypes char *f, ...) #else f, s0, s1, s2, s3, s4, s5, s6, s7, s8, s9) /* limit of ten args */ char *f; char *s0, *s1, *s2, *s3, *s4, *s5, *s6, *s7, *s8, *s9; #endif { #if NeedVarargsPrototypes va_list args; #endif ErrorF("\nFatal proxy error:\n"); #if NeedVarargsPrototypes va_start(args, f); VErrorF(f, args); va_end(args); #else ErrorF(f, s0, s1, s2, s3, s4, s5, s6, s7, s8, s9); #endif ErrorF("\n"); AbortServer(); /*NOTREACHED*/ } #if NeedVarargsPrototypes void VErrorF(f, args) char *f; va_list args; { vfprintf(stderr, f, args); } #endif /*VARARGS1*/ void ErrorF( #if NeedVarargsPrototypes char * f, ...) #else f, s0, s1, s2, s3, s4, s5, s6, s7, s8, s9) /* limit of ten args */ char *f; char *s0, *s1, *s2, *s3, *s4, *s5, *s6, *s7, *s8, *s9; #endif { #if NeedVarargsPrototypes va_list args; va_start(args, f); VErrorF(f, args); va_end(args); #else fprintf( stderr, f, s0, s1, s2, s3, s4, s5, s6, s7, s8, s9); #endif } char * strnalloc(str, len) char *str; int len; { char *t; t = (char *) Xalloc(len); if (!t) return (char *) 0; bcopy(str, t, len); return t; }