/* $TOG: utils.c /main/128 1997/06/01 13:50:39 sekhar $ */ /* 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, Copyright 1994 Quarterdeck Office Systems. 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 names of Digital and Quarterdeck not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. DIGITAL AND QUARTERDECK DISCLAIM 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. */ /* $XFree86: xc/programs/Xserver/os/utils.c,v 3.27.2.11 1998/12/27 02:01:20 dawes Exp $ */ #ifdef WIN32 #include #endif #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 #if !defined(SYSV) && !defined(AMOEBA) && !defined(_MINIX) && !defined(WIN32) && !defined(Lynx) #include #endif #include #include #include /* for isspace */ #if NeedVarargsPrototypes #include #endif #if defined(DGUX) #include #include #include #endif #ifdef AMOEBA #include "osdep.h" #include #include static mutex print_lock; #endif #if defined(__STDC__) || defined(AMOEBA) /* DHD: SVR4.0 has a prototype for abs() in stdlib.h */ /* DHD: might be better to move this include higher up? */ #ifdef abs #undef abs #endif #ifndef NOSTDHDRS #include /* for malloc() */ #endif #endif extern char *display; extern CARD32 defaultScreenSaverTime; /* for parsing command line */ extern CARD32 defaultScreenSaverInterval; extern int defaultScreenSaverBlanking; extern int defaultBackingStore; extern Bool disableBackingStore; extern Bool disableSaveUnders; extern Bool PartialNetwork; #ifndef NOLOGOHACK extern int logoScreenSaver; #endif #ifdef RLIMIT_DATA extern int limitDataSpace; #endif #ifdef RLIMIT_STACK extern int limitStackSpace; #endif #ifdef RLIMIT_NOFILE extern int limitNoFile; #endif extern int defaultColorVisualClass; extern Bool permitOldBugs; extern int monitorResolution; extern Bool defeatAccessControl; #ifdef SERVER_LOCK static Bool nolock = FALSE; #endif extern char* protNoListen; Bool CoreDump; Bool noTestExtensions; int auditTrailLevel = 1; void ddxUseMsg(); #if NeedVarargsPrototypes void VErrorF(char*, va_list); #endif #ifdef AIXV3 FILE *aixfd; int SyncOn = 0; extern int SelectWaitTime; #endif #ifdef DEBUG #ifndef SPECIAL_MALLOC #define MEMBUG #endif #endif #ifdef MEMBUG #define MEM_FAIL_SCALE 100000 long Memory_fail = 0; #ifdef linux #include /* for random() */ #endif #endif #ifdef sgi int userdefinedfontpath = 0; #endif /* sgi */ 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 } #include extern int errno; #ifdef SERVER_LOCK /* * Explicit support for a server lock file like the ones used for UUCP. * For architectures with virtual terminals that can run more than one * server at a time. This keeps the servers from stomping on each other * if the user forgets to give them different display numbers. */ #ifndef __EMX__ #define LOCK_DIR "/tmp" #define LOCK_TMP_PREFIX "/.tX" #define LOCK_PREFIX "/.X" #define LOCK_SUFFIX "-lock" #else #define LOCK_TMP_PREFIX "/xf86$" #define LOCK_PREFIX "/xf86_" #define LOCK_SUFFIX ".lck" #endif #if defined(DGUX) #include #include #endif #ifdef _MINIX #include /* For PATH_MAX */ #endif #ifdef __EMX__ #define link rename #endif #ifndef PATH_MAX #ifndef Lynx #include #else #include #endif #ifndef PATH_MAX #ifdef MAXPATHLEN #define PATH_MAX MAXPATHLEN #else #define PATH_MAX 1024 #endif #endif #endif static Bool StillLocking = FALSE; static char LockFile[PATH_MAX]; /* * LockServer -- * Check if the server lock file exists. If so, check if the PID * contained inside is valid. If so, then die. Otherwise, create * the lock file containing the PID. */ void LockServer() { #ifndef AMOEBA char tmp[PATH_MAX], pid_str[12]; int lfd, i, haslock, l_pid, t; char *tmppath = NULL; int len; if (nolock) return; /* * Path names */ #ifndef __EMX__ tmppath = LOCK_DIR; #else /* OS/2 uses TMP directory, must also prepare for 8.3 names */ tmppath = getenv("TMP"); if (!tmppath) FatalError("No TMP dir found\n"); #endif len = strlen(LOCK_PREFIX) > strlen(LOCK_TMP_PREFIX) ? strlen(LOCK_PREFIX) : strlen(LOCK_TMP_PREFIX); len += strlen(tmppath) + strlen(display) + strlen(LOCK_SUFFIX) + 1; if (len > sizeof(LockFile)) FatalError("Display name `%s' is too long\n"); (void)sprintf(tmp, "%s" LOCK_TMP_PREFIX "%s" LOCK_SUFFIX, tmppath, display); (void)sprintf(LockFile, "%s" LOCK_PREFIX "%s" LOCK_SUFFIX, tmppath, display); /* * Create a temporary file containing our PID. Attempt three times * to create the file. */ StillLocking = TRUE; i = 0; do { i++; lfd = open(tmp, O_CREAT | O_EXCL | O_WRONLY, 0644); if (lfd < 0) sleep(2); else break; } while (i < 3); if (lfd < 0) { unlink(tmp); i = 0; do { i++; lfd = open(tmp, O_CREAT | O_EXCL | O_WRONLY, 0644); if (lfd < 0) sleep(2); else break; } while (i < 3); } if (lfd < 0) FatalError("Could not create lock file in %s\n", tmp); (void) sprintf(pid_str, "%10d\n", getpid()); (void) write(lfd, pid_str, 11); #ifndef __EMX__ #ifndef USE_CHMOD (void) fchmod(lfd, 0444); #else (void) chmod(tmp, 0444); #endif #endif (void) close(lfd); /* * OK. Now the tmp file exists. Try three times to move it in place * for the lock. */ i = 0; haslock = 0; while ((!haslock) && (i++ < 3)) { haslock = (link(tmp,LockFile) == 0); if (haslock) { /* * We're done. */ break; } else { /* * Read the pid from the existing file */ lfd = open(LockFile, O_RDONLY); if (lfd < 0) { unlink(tmp); FatalError("Can't read lock file %s\n", LockFile); } pid_str[0] = '\0'; if (read(lfd, pid_str, 11) != 11) { /* * Bogus lock file. */ unlink(LockFile); close(lfd); continue; } pid_str[11] = '\0'; sscanf(pid_str, "%d", &l_pid); close(lfd); /* * Now try to kill the PID to see if it exists. */ errno = 0; t = kill(l_pid, 0); if ((t< 0) && (errno == ESRCH)) { /* * Stale lock file. */ unlink(LockFile); continue; } else if (((t < 0) && (errno == EPERM)) || (t == 0)) { /* * Process is still active. */ unlink(tmp); FatalError("Server is already active for display %s\n%s %s\n%s\n", display, "\tIf this server is no longer running, remove", LockFile, "\tand start again."); } } } unlink(tmp); if (!haslock) FatalError("Could not create server lock file: %s\n", LockFile); StillLocking = FALSE; #endif /* !AMOEBA */ } /* * UnlockServer -- * Remove the server lock file. */ void UnlockServer() { #ifndef AMOEBA if (nolock) return; if (!StillLocking){ #ifdef __EMX__ (void) chmod(LockFile,S_IREAD|S_IWRITE); #endif /* __EMX__ */ (void) unlink(LockFile); } #endif } #endif /* SERVER_LOCK */ /* Force connections to close on SIGHUP from init */ /*ARGSUSED*/ SIGVAL AutoResetServer (sig) int sig; { dispatchException |= DE_RESET; isItTimeToYield = TRUE; #ifdef GPROF chdir ("/tmp"); exit (0); #endif #if defined(SYSV) && defined(X_NOT_POSIX) OsSignal (SIGHUP, AutoResetServer); #endif #ifdef AMOEBA WakeUpMainThread(); #endif } /* Force connections to close and then exit on SIGTERM, SIGINT */ /*ARGSUSED*/ SIGVAL GiveUp(sig) int sig; { dispatchException |= DE_TERMINATE; isItTimeToYield = TRUE; #if defined(SYSV) && defined(X_NOT_POSIX) if (sig) OsSignal(sig, SIG_IGN); #endif #ifdef AMOEBA WakeUpMainThread(); #endif } #if __GNUC__ static void AbortServer() __attribute__((noreturn)); #endif static void AbortServer() { extern void AbortDDX(); OsCleanup(); AbortDDX(); fflush(stderr); #ifdef AMOEBA IOPCleanUp(); #endif if (CoreDump) abort(); exit (1); } void Error(str) char *str; { #ifdef AMOEBA mu_lock(&print_lock); #endif perror(str); #ifdef AMOEBA mu_unlock(&print_lock); #endif } #ifndef DDXTIME CARD32 GetTimeInMillis() { #ifndef AMOEBA struct timeval tp; X_GETTIMEOFDAY(&tp); return(tp.tv_sec * 1000) + (tp.tv_usec / 1000); #else return sys_milli(); #endif } #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) #ifndef AMOEBA ErrorF("use: X [:] [option]\n"); #else ErrorF("use: X [[]:] [option]\n"); #endif ErrorF("-a # mouse acceleration (pixels)\n"); ErrorF("-ac disable access control restrictions\n"); #ifdef MEMBUG ErrorF("-alloc int chance alloc should fail\n"); #endif ErrorF("-audit int set audit trail level\n"); ErrorF("-auth file select authorization file\n"); ErrorF("bc enable bug compatibility\n"); ErrorF("-bs disable any backing store support\n"); ErrorF("-c turns off key-click\n"); ErrorF("c # key-click volume (0-100)\n"); ErrorF("-cc int default color visual class\n"); ErrorF("-co file color database file\n"); #if 0 ErrorF("-config file read options from file\n"); #endif ErrorF("-core generate core dump on fatal error\n"); ErrorF("-dpi int screen resolution in dots per inch\n"); #ifdef DPMSExtension ErrorF("dpms enables VESA DPMS monitor control\n"); ErrorF("-dpms disables VESA DPMS monitor control\n"); #endif ErrorF("-deferglyphs [none|all|16] defer loading of [no|all|16-bit] glyphs\n"); ErrorF("-f # bell base (0-100)\n"); ErrorF("-fc string cursor font\n"); ErrorF("-fn string default font name\n"); ErrorF("-fp string default font path\n"); ErrorF("-help prints message with these options\n"); ErrorF("-I ignore all remaining arguments\n"); #ifdef RLIMIT_DATA ErrorF("-ld int limit data space to N Kb\n"); #endif #ifdef RLIMIT_NOFILE ErrorF("-lf int limit number of open files to N\n"); #endif #ifdef RLIMIT_STACK ErrorF("-ls int limit stack space to N Kb\n"); #endif #ifdef SERVER_LOCK ErrorF("-nolock disable the locking mechanism\n"); #endif #ifndef NOLOGOHACK ErrorF("-logo enable logo in screen saver\n"); ErrorF("nologo disable logo in screen saver\n"); #endif ErrorF("-nolisten string don't listen on protocol\n"); ErrorF("-p # screen-saver pattern duration (minutes)\n"); ErrorF("-pn accept failure to listen on all ports\n"); ErrorF("-nopn reject failure to listen on all ports\n"); ErrorF("-r turns off auto-repeat\n"); ErrorF("r turns on auto-repeat \n"); ErrorF("-s # screen-saver timeout (minutes)\n"); #ifdef XCSECURITY ErrorF("-sp file security policy file\n"); #endif ErrorF("-su disable any save under support\n"); ErrorF("-t # mouse threshold (pixels)\n"); ErrorF("-terminate terminate at server reset\n"); ErrorF("-to # connection time out\n"); ErrorF("-tst disable testing extensions\n"); ErrorF("ttyxx server started from init on /dev/ttyxx\n"); ErrorF("v video blanking for screen-saver\n"); ErrorF("-v screen-saver without video blanking\n"); ErrorF("-wm WhenMapped default backing-store\n"); ErrorF("-x string loads named extension at init time \n"); #ifdef AMOEBA ErrorF("-tcp capability specify TCP/IP server capability\n"); #endif #ifdef XDMCP XdmcpUseMsg(); #endif #endif /* !AIXrt && ! AIX386 */ #ifdef XKB XkbUseMsg(); #endif ddxUseMsg(); } /* This function performs a rudimentary sanity check * on the display name passed in on the command-line, * since this string is used to generate filenames. * It is especially important that the display name * not contain a "/" and not start with a "-". * --kvajk */ int VerifyDisplayName( d ) char *d; { if ( d == (char *)0 ) return( 0 ); /* null */ if ( *d == '\0' ) return( 0 ); /* empty */ if ( *d == '-' ) return( 0 ); /* could be confused for an option */ if ( *d == '.' ) return( 0 ); /* must not equal "." or ".." */ if ( strchr(d, '/') != (char *)0 ) return( 0 ); /* very important!!! */ return( 1 ); } /* * 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; #ifdef AMOEBA mu_init(&print_lock); #endif defaultKeyboardControl.autoRepeat = TRUE; #ifdef PART_NET PartialNetwork = TRUE; #endif #ifdef AIXV3 OpenDebug(); #endif 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++; if( ! VerifyDisplayName( display ) ) { ErrorF("Bad display name: %s\n", display); UseMsg(); exit(1); } } #ifdef AMOEBA else if (strchr(argv[i], ':') != NULL) { char *p; XServerHostName = argv[i]; if ((p = strchr(argv[i], ':')) != NULL) { *p++ = '\0'; display = p; if( ! VerifyDisplayName( display ) ) { ErrorF("Bad display name: %s\n", display); UseMsg(); exit(1); } } } else if (strcmp( argv[i], "-tcp") == 0) { if (++i < argc) XTcpServerName = argv[i]; else UseMsg(); } #endif /* AMOEBA */ else if ( strcmp( argv[i], "-a") == 0) { if(++i < argc) defaultPointerControl.num = atoi(argv[i]); else UseMsg(); } 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 else if ( strcmp( argv[i], "-audit") == 0) { if(++i < argc) auditTrailLevel = atoi(argv[i]); else UseMsg(); } else if ( strcmp( argv[i], "-auth") == 0) { if(++i < argc) InitAuthorization (argv[i]); else UseMsg(); } else if ( strcmp( argv[i], "bc") == 0) permitOldBugs = TRUE; else if ( strcmp( argv[i], "-bs") == 0) disableBackingStore = TRUE; else if ( strcmp( argv[i], "c") == 0) { if(++i < argc) defaultKeyboardControl.click = atoi(argv[i]); else UseMsg(); } else if ( strcmp( argv[i], "-c") == 0) { defaultKeyboardControl.click = 0; } else if ( strcmp( argv[i], "-cc") == 0) { if(++i < argc) defaultColorVisualClass = atoi(argv[i]); else UseMsg(); } else if ( strcmp( argv[i], "-co") == 0) { if(++i < argc) rgbPath = argv[i]; else UseMsg(); } else if ( strcmp( argv[i], "-core") == 0) CoreDump = TRUE; else if ( strcmp( argv[i], "-dpi") == 0) { if(++i < argc) monitorResolution = atoi(argv[i]); else UseMsg(); } #ifdef DPMSExtension else if ( strcmp( argv[i], "dpms") == 0) DPMSEnabledSwitch = TRUE; else if ( strcmp( argv[i], "-dpms") == 0) DPMSDisabledSwitch = TRUE; #endif else if ( strcmp( argv[i], "-deferglyphs") == 0) { if(++i >= argc || !ParseGlyphCachingMode(argv[i])) UseMsg(); } else if ( strcmp( argv[i], "-f") == 0) { if(++i < argc) defaultKeyboardControl.bell = atoi(argv[i]); else UseMsg(); } else if ( strcmp( argv[i], "-fc") == 0) { if(++i < argc) defaultCursorFont = argv[i]; else UseMsg(); } else if ( strcmp( argv[i], "-fn") == 0) { if(++i < argc) defaultTextFont = argv[i]; else UseMsg(); } else if ( strcmp( argv[i], "-fp") == 0) { if(++i < argc) { #ifdef sgi userdefinedfontpath = 1; #endif /* sgi */ defaultFontPath = argv[i]; } else UseMsg(); } else if ( strcmp( argv[i], "-help") == 0) { UseMsg(); exit(0); } #ifdef XKB else if ( (skip=XkbProcessArguments(argc,argv,i))!=0 ) { if (skip>0) i+= skip-1; else UseMsg(); } #endif #ifdef RLIMIT_DATA else if ( strcmp( argv[i], "-ld") == 0) { if(++i < argc) { limitDataSpace = atoi(argv[i]); if (limitDataSpace > 0) limitDataSpace *= 1024; } else UseMsg(); } #endif #ifdef RLIMIT_NOFILE else if ( strcmp( argv[i], "-lf") == 0) { if(++i < argc) limitNoFile = atoi(argv[i]); else UseMsg(); } #endif #ifdef RLIMIT_STACK else if ( strcmp( argv[i], "-ls") == 0) { if(++i < argc) { limitStackSpace = atoi(argv[i]); if (limitStackSpace > 0) limitStackSpace *= 1024; } else UseMsg(); } #endif #ifdef SERVER_LOCK else if ( strcmp ( argv[i], "-nolock") == 0) { #if !defined(WIN32) && !defined(__EMX__) if (getuid() != 0) ErrorF("Warning: the -nolock option can only be used by root\n"); else #endif nolock = TRUE; } #endif #ifndef NOLOGOHACK else if ( strcmp( argv[i], "-logo") == 0) { logoScreenSaver = 1; } else if ( strcmp( argv[i], "nologo") == 0) { logoScreenSaver = 0; } #endif else if ( strcmp( argv[i], "-nolisten") == 0) { if(++i < argc) protNoListen = argv[i]; else UseMsg(); } else if ( strcmp( argv[i], "-p") == 0) { if(++i < argc) defaultScreenSaverInterval = ((CARD32)atoi(argv[i])) * MILLI_PER_MIN; else UseMsg(); } else if ( strcmp( argv[i], "-pn") == 0) PartialNetwork = TRUE; else if ( strcmp( argv[i], "-nopn") == 0) PartialNetwork = FALSE; else if ( strcmp( argv[i], "r") == 0) defaultKeyboardControl.autoRepeat = TRUE; else if ( strcmp( argv[i], "-r") == 0) defaultKeyboardControl.autoRepeat = FALSE; else if ( strcmp( argv[i], "-s") == 0) { if(++i < argc) defaultScreenSaverTime = ((CARD32)atoi(argv[i])) * MILLI_PER_MIN; else UseMsg(); } else if ( strcmp( argv[i], "-su") == 0) disableSaveUnders = TRUE; else if ( strcmp( argv[i], "-t") == 0) { if(++i < argc) defaultPointerControl.threshold = atoi(argv[i]); else UseMsg(); } else if ( strcmp( argv[i], "-terminate") == 0) { extern Bool terminateAtReset; terminateAtReset = TRUE; } else if ( strcmp( argv[i], "-to") == 0) { if(++i < argc) TimeOutValue = ((CARD32)atoi(argv[i])) * MILLI_PER_SECOND; else UseMsg(); } else if ( strcmp( argv[i], "-tst") == 0) { noTestExtensions = TRUE; } else if ( strcmp( argv[i], "v") == 0) defaultScreenSaverBlanking = PreferBlanking; else if ( strcmp( argv[i], "-v") == 0) defaultScreenSaverBlanking = DontPreferBlanking; else if ( strcmp( argv[i], "-wm") == 0) defaultBackingStore = WhenMapped; else if ( strcmp( argv[i], "-x") == 0) { if(++i >= argc) UseMsg(); /* For U**x, which doesn't support dynamic loading, there's nothing * to do when we see a -x. Either the extension is linked in or * it isn't */ } 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 #ifdef XPRINT else if ((skip = XprintOptions(argc, argv, i)) != i) { i = skip - 1; } #endif #ifdef XCSECURITY else if ((skip = XSecurityOptions(argc, argv, i)) != i) { i = skip - 1; } #endif #ifdef AIXV3 else if ( strcmp( argv[i], "-timeout") == 0) { if(++i < argc) SelectWaitTime = atoi(argv[i]); else UseMsg(); } else if ( strcmp( argv[i], "-sync") == 0) { SyncOn++; } #endif else { ErrorF("Unrecognized option: %s\n", argv[i]); UseMsg(); exit (1); } } } #if 0 static void InsertFileIntoCommandLine(resargc, resargv, prefix_argc, prefix_argv, filename, suffix_argc, suffix_argv) int *resargc; char ***resargv; int prefix_argc; char **prefix_argv; char *filename; int suffix_argc; char **suffix_argv; { struct stat st; FILE *f; char *p; char *q; int insert_argc; char *buf; int len; int i; f = fopen(filename, "r"); if (!f) FatalError("Can't open option file %s\n", filename); fstat(fileno(f), &st); buf = (char *) xalloc((unsigned) st.st_size + 1); if (!buf) FatalError("Out of Memory\n"); len = fread(buf, 1, (unsigned) st.st_size, f); fclose(f); if (len < 0) FatalError("Error reading option file %s\n", filename); buf[len] = '\0'; p = buf; q = buf; insert_argc = 0; while (*p) { while (isspace(*p)) p++; if (!*p) break; if (*p == '#') { while (*p && *p != '\n') p++; } else { while (*p && !isspace(*p)) *q++ = *p++; /* Since p and q might still be pointing at the same place, we */ /* need to step p over the whitespace now before we add the null. */ if (*p) p++; *q++ = '\0'; insert_argc++; } } buf = (char *) xrealloc(buf, q - buf); if (!buf) FatalError("Out of memory reallocing option buf\n"); *resargc = prefix_argc + insert_argc + suffix_argc; *resargv = (char **) xalloc((*resargc + 1) * sizeof(char *)); memcpy(*resargv, prefix_argv, prefix_argc * sizeof(char *)); p = buf; for (i = 0; i < insert_argc; i++) { (*resargv)[prefix_argc + i] = p; p += strlen(p) + 1; } memcpy(*resargv + prefix_argc + insert_argc, suffix_argv, suffix_argc * sizeof(char *)); (*resargv)[*resargc] = NULL; } /* end InsertFileIntoCommandLine */ void ExpandCommandLine(pargc, pargv) int *pargc; char ***pargv; { int i; for (i = 1; i < *pargc; i++) { if ( (0 == strcmp((*pargv)[i], "-config")) && (i < (*pargc - 1)) ) { InsertFileIntoCommandLine(pargc, pargv, i, *pargv, (*pargv)[i+1], /* filename */ *pargc - i - 2, *pargv + i + 2); i--; } } } /* end ExpandCommandLine */ #endif #if defined(TCPCONN) || defined(STREAMSCONN) #ifndef WIN32 #include #endif #endif /* Implement a simple-minded font authorization scheme. The authorization name is "hp-hostname-1", the contents are simply the host name. */ int set_font_authorizations(authorizations, authlen, client) char **authorizations; int *authlen; pointer client; { #define AUTHORIZATION_NAME "hp-hostname-1" #if defined(TCPCONN) || defined(STREAMSCONN) static char result[1024]; static char *p = NULL; if (p == NULL) { char hname[1024], *hnameptr; struct hostent *host; int len; gethostname(hname, 1024); host = gethostbyname(hname); if (host == NULL) hnameptr = hname; else hnameptr = host->h_name; p = result; *p++ = sizeof(AUTHORIZATION_NAME) >> 8; *p++ = sizeof(AUTHORIZATION_NAME) & 0xff; *p++ = (len = strlen(hnameptr) + 1) >> 8; *p++ = (len & 0xff); memmove(p, AUTHORIZATION_NAME, sizeof(AUTHORIZATION_NAME)); p += sizeof(AUTHORIZATION_NAME); memmove(p, hnameptr, len); p += len; } *authlen = p - result; *authorizations = result; return 1; #else /* TCPCONN */ return 0; #endif /* TCPCONN */ } /* XALLOC -- X's internal memory allocator. Why does it return unsigned * long * 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. */ #ifndef INTERNAL_MALLOC unsigned long * Xalloc (amount) unsigned long amount; { #if !defined(__STDC__) && !defined(AMOEBA) char *malloc(); #endif register pointer ptr; if ((long)amount <= 0) { return (unsigned long *)NULL; } /* aligned extra on long word boundary */ amount = (amount + (sizeof(long) - 1)) & ~(sizeof(long) - 1); #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; } /***************** * XNFalloc * "no failure" realloc, alternate interface to Xalloc w/o Must_have_memory *****************/ unsigned long * XNFalloc (amount) unsigned long amount; { #if !defined(__STDC__) && !defined(AMOEBA) char *malloc(); #endif register pointer ptr; if ((long)amount <= 0) { return (unsigned long *)NULL; } /* aligned extra on long word boundary */ amount = (amount + (sizeof(long) - 1)) & ~(sizeof(long) - 1); ptr = (pointer)malloc(amount); if (!ptr) { FatalError("Out of memory"); } return ((unsigned long *)ptr); } /***************** * 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; { #if !defined(__STDC__) && !defined(AMOEBA) char *malloc(); char *realloc(); #endif #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 + (sizeof(long) - 1)) & ~(sizeof(long) - 1); 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; } /***************** * XNFrealloc * "no failure" realloc, alternate interface to Xrealloc w/o Must_have_memory *****************/ unsigned long * XNFrealloc (ptr, amount) register pointer ptr; unsigned long amount; { if (( ptr = (pointer)Xrealloc( ptr, amount ) ) == NULL) { FatalError( "Out of memory" ); } return ((unsigned long *)ptr); } /***************** * Xfree * calls free *****************/ void Xfree(ptr) register pointer ptr; { if (ptr) free((char *)ptr); } void OsInitAllocator () { #ifdef MEMBUG static int been_here; /* Check the memory system after each generation */ if (been_here) CheckMemory (); else been_here = 1; #endif } #endif void AuditPrefix(f) char *f; { #ifdef X_NOT_STDC_ENV long tm; #else time_t tm; #endif char *autime, *s; 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); } } /*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 { #if NeedVarargsPrototypes va_list args; #endif AuditPrefix(f); #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 } /*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 server 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"); #ifdef DDXOSFATALERROR OsVendorFatalError(); #endif AbortServer(); /*NOTREACHED*/ } #if NeedVarargsPrototypes void VErrorF(f, args) char *f; va_list args; { #if !defined(DGUX) #ifdef AIXV3 vfprintf(aixfd, f, args); fflush (aixfd); if (SyncOn) sync(); #else vfprintf(stderr, f, args); #endif /* AIXV3 */ #else /* DGUX */ /* writing to the console while the server is running is bad with DG/ux */ static Bool firstTime = TRUE; static Bool suppress = FALSE; if (firstTime) { firstTime = FALSE; if (isatty(fileno(stderr))) suppress = TRUE; } if (!suppress) vfprintf(stderr, f, args); #endif /* DGUX */ } #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 #if !defined(DGUX) #ifdef AIXV3 fprintf(aixfd, f, s0, s1, s2, s3, s4, s5, s6, s7, s8, s9); fflush (aixfd); if (SyncOn) sync(); #else /* not AIXV3 */ #ifdef AMOEBA mu_lock(&print_lock); #endif fprintf( stderr, f, s0, s1, s2, s3, s4, s5, s6, s7, s8, s9); #ifdef AMOEBA mu_unlock(&print_lock); #endif #endif /* AIXV3 */ #else /* DGUX */ /* writing to the console while the server is running is bad with DG/ux */ static Bool firstTime = TRUE; static Bool suppress = FALSE; if (firstTime) { firstTime = FALSE; if (isatty(fileno(stderr))) suppress = TRUE; } if (!suppress) fprintf(stderr, f, s0, s1, s2, s3, s4, s5, s6, s7, s8, s9); #endif /* DGUX */ #endif } #ifdef AIXV3 OpenDebug() { char aixlogfile[100]; struct stat aixfilebuf; sprintf(aixlogfile,"/tmp/xlogfile%d",getpid()); /* if the logfile already exists & is a symlink, fopen() overwrites * it without unlinking the file. It is necessary to unlink the * logfile to avoid a security breach & possible exploitation. */ if (stat((const char *)aixlogfile,&aixfilebuf) == 0) unlink(aixlogfile); if((aixfd = fopen(aixlogfile,"w")) == NULL ) { fprintf(stderr,"open %s failed\n",aixlogfile); exit(-1); } chmod(aixlogfile,00644); } #endif #if !defined(WIN32) && !defined(__EMX__) /* * "safer" versions of system(3), popen(3) and pclose(3) which give up * all privs before running a command. * * This is based on the code in FreeBSD 2.2 libc. */ int System(command) char *command; { int pid, p; void (*csig)(); int status; if (!command) return(1); #ifdef SIGCHLD csig = signal(SIGCHLD, SIG_DFL); #endif ErrorF("System: `%s'\n", command); switch (pid = fork()) { case -1: /* error */ p = -1; case 0: /* child */ setgid(getgid()); setuid(getuid()); execl("/bin/sh", "sh", "-c", command, (char *)NULL); _exit(127); default: /* parent */ do { p = waitpid(pid, &status, 0); } while (p == -1 && errno == EINTR); } #ifdef SIGCHLD signal(SIGCHLD, csig); #endif return p == -1 ? -1 : status; } static struct pid { struct pid *next; FILE *fp; int pid; } *pidlist; pointer Popen(command, type) char *command; char *type; { struct pid *cur; FILE *iop; int pdes[2], pid; void (*csig)(); if (command == NULL || type == NULL) return NULL; if ((*type != 'r' && *type != 'w') || type[1]) return NULL; if ((cur = (struct pid *)xalloc(sizeof(struct pid))) == NULL) return NULL; if (pipe(pdes) < 0) { xfree(cur); return NULL; } switch (pid = fork()) { case -1: /* error */ close(pdes[0]); close(pdes[1]); xfree(cur); return NULL; case 0: /* child */ setgid(getgid()); setuid(getuid()); if (*type == 'r') { if (pdes[1] != 1) { /* stdout */ dup2(pdes[1], 1); close(pdes[1]); } close(pdes[0]); } else { if (pdes[0] != 0) { /* stdin */ dup2(pdes[0], 0); close(pdes[0]); } close(pdes[1]); } execl("/bin/sh", "sh", "-c", command, (char *)NULL); _exit(127); } /* parent */ if (*type == 'r') { iop = fdopen(pdes[0], type); close(pdes[1]); } else { iop = fdopen(pdes[1], type); close(pdes[0]); } cur->fp = iop; cur->pid = pid; cur->next = pidlist; pidlist = cur; #if 0 ErrorF("Popen: `%s', fp = %p\n", command, iop); #endif return iop; } int Pclose(iop) pointer iop; { struct pid *cur, *last; int omask; int pstat; int pid; #if 0 ErrorF("Pclose: fp = %p\n", iop); #endif fclose(iop); for (last = NULL, cur = pidlist; cur; last = cur, cur = cur->next) if (cur->fp == iop) break; if (cur == NULL) return -1; do { pid = waitpid(cur->pid, &pstat, 0); } while (pid == -1 && errno == EINTR); if (last == NULL) pidlist = cur->next; else last->next = cur->next; xfree(cur); return pid == -1 ? -1 : pstat; } #endif /* !WIN32 && !__EMX__ */