/************************************************************************* * * * YAP Prolog * * * * Yap Prolog was developed at NCCUP - Universidade do Porto * * * * Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 * * * ************************************************************************** * * * $Id: sys.c,v 1.36 2008-07-11 17:02:09 vsc Exp $ * * mods: $Log: not supported by cvs2svn $ * mods: Revision 1.35 2008/05/23 13:16:13 vsc * mods: fix sys.c for win32 * mods: * mods: Revision 1.34 2008/05/22 23:25:21 vsc * mods: add tmp_file/2 * mods: * mods: Revision 1.33 2007/10/05 18:24:30 vsc * mods: fix garbage collector and fix LeaveGoal * mods: * mods: Revision 1.32 2007/05/07 12:11:39 vsc * mods: fix mktime fix * mods: * mods: Revision 1.31 2007/05/07 11:21:29 vsc * mods: mktime needs to know if daylight time savings are on * mods: (obs from Bernd Gutmann). * mods: * mods: Revision 1.30 2007/05/02 11:16:43 vsc * mods: small fixes to sys.c * mods: * mods: Revision 1.29 2006/10/10 14:08:17 vsc * mods: small fixes on threaded implementation. * mods: * mods: Revision 1.28 2006/05/25 16:28:28 vsc * mods: include thread_sleep functionality. * mods: * mods: Revision 1.27 2006/05/17 18:38:11 vsc * mods: make system library use true file name * mods: * mods: Revision 1.26 2006/04/25 03:23:40 vsc * mods: fix ! in debugger (execute_clause) * mods: improve system/1 and execute/1 * mods: * mods: Revision 1.25 2006/01/17 14:10:42 vsc * mods: YENV may be an HW register (breaks some tabling code) * mods: All YAAM instructions are now brackedted, so Op introduced an { and EndOp introduces an }. This is because Ricardo assumes that. * mods: Fix attvars when COROUTING is undefined. * mods: * mods: Revision 1.24 2006/01/08 23:01:48 vsc * mods: *** empty log message *** * mods: * mods: Revision 1.23 2005/10/21 16:09:03 vsc * mods: SWI compatible module only operators * mods: * mods: Revision 1.22 2005/03/10 18:04:01 rslopes * mods: update YAP_Error arguments * mods: to be able to compile on Windows... * mods: * mods: Revision 1.21 2004/08/11 16:14:54 vsc * mods: whole lot of fixes: * mods: - memory leak in indexing * mods: - memory management in WIN32 now supports holes * mods: - extend Yap interface, more support for SWI-Interface * mods: - new predicate mktime in system * mods: - buffer console I/O in WIN32 * mods: * mods: Revision 1.20 2004/07/23 19:02:09 vsc * mods: misc fixes * mods: * mods: Revision 1.19 2004/07/23 03:37:17 vsc * mods: fix heap overflow in YAP_LookupAtom * mods: * mods: Revision 1.18 2004/01/26 12:51:33 vsc * mods: should be datime/1 not date/1 * mods: * mods: Revision 1.17 2004/01/26 12:41:06 vsc * mods: bug fixes * mods: * mods: Revision 1.16 2003/01/27 15:55:40 vsc * mods: use CVS Id * mods: * mods: Revision 1.15 2003/01/27 15:54:10 vsc * mods: fix header * mods: * * comments: regular expression interpreter * * * *************************************************************************/ #include "config.h" #include "YapInterface.h" #include #if HAVE_UNISTD_H #include #endif #include #if HAVE_TIME_H #include #endif #if HAVE_SYS_TYPES_H #include #endif #if HAVE_SYS_STAT_H #include #endif #if HAVE_FCNTL_H #include #endif #if HAVE_MATH_H #include #endif #if HAVE_UNISTD_H #include #endif #if HAVE_ERRNO_H #include #endif #if HAVE_STRING_H #include #endif #if HAVE_SIGNAL_H #include #endif #if HAVE_SYS_WAIT_H #include #endif #if HAVE_DIRENT_H #include #endif #if HAVE_DIRECT_H #include #endif #if defined(__MINGW32__) || _MSC_VER #include #include #endif #ifdef __MINGW32__ #ifdef HAVE_ENVIRON #undef HAVE_ENVIRON #endif #endif #if __ANDROID__ #include #include #include #endif void init_sys(void); #if defined(__MINGW32__) || _MSC_VER static YAP_Term WinError(void) { char msg[256]; /* Error, we could not read time */ FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), msg, 256, NULL); return(YAP_MkAtomTerm(YAP_LookupAtom(msg))); } #endif /* Return time in a structure */ static YAP_Bool sysmktime(void) { #if defined(__MINGW32__) || _MSC_VER SYSTEMTIME stime, stime0; FILETIME ftime, ftime0; stime.wYear = YAP_IntOfTerm(YAP_ARG1); stime.wMonth = YAP_IntOfTerm(YAP_ARG2); stime.wDay = YAP_IntOfTerm(YAP_ARG3); stime.wHour = YAP_IntOfTerm(YAP_ARG4); stime.wMinute = YAP_IntOfTerm(YAP_ARG5); stime.wSecond = YAP_IntOfTerm(YAP_ARG6); stime.wMilliseconds = 0; stime0.wYear = 1970; stime0.wMonth = 1; stime0.wDay = 1; stime0.wHour = 12; stime0.wMinute = 0; stime0.wSecond = 0; stime0.wMilliseconds = 0; if (!SystemTimeToFileTime(&stime,&ftime)) { return YAP_Unify(YAP_ARG8, YAP_MkIntTerm(errno)); } if (!SystemTimeToFileTime(&stime0,&ftime0)) { return YAP_Unify(YAP_ARG8, YAP_MkIntTerm(errno)); } #if __GNUC__ { unsigned long long f1 = (((unsigned long long)ftime.dwHighDateTime)<<32)+(unsigned long long)ftime.dwLowDateTime; unsigned long long f0 = (((unsigned long long)ftime0.dwHighDateTime)<<32)+(unsigned long long)ftime0.dwLowDateTime; return YAP_Unify(YAP_ARG7,YAP_MkIntTerm((long int)((f1-f0)/10000000))); } #else return FALSE; #endif #else #ifdef HAVE_MKTIME struct tm loc; time_t tim; loc.tm_year = YAP_IntOfTerm(YAP_ARG1)-1900; loc.tm_mon = YAP_IntOfTerm(YAP_ARG2)-1; loc.tm_mday = YAP_IntOfTerm(YAP_ARG3); loc.tm_hour = YAP_IntOfTerm(YAP_ARG4); loc.tm_min = YAP_IntOfTerm(YAP_ARG5); loc.tm_sec = YAP_IntOfTerm(YAP_ARG6); loc.tm_isdst = -1; if ((tim = mktime(&loc)) == (time_t)-1) { return YAP_Unify(YAP_ARG8, YAP_MkIntTerm(errno)); } return YAP_Unify(YAP_ARG7,YAP_MkIntTerm(tim)); #else oops #endif /* HAVE_MKTIME */ #endif /* WINDOWS */ } /* Return time in a structure */ static YAP_Bool datime(void) { YAP_Term tf, out[6]; #if defined(__MINGW32__) || _MSC_VER SYSTEMTIME stime; GetLocalTime(&stime); out[0] = YAP_MkIntTerm(stime.wYear); out[1] = YAP_MkIntTerm(stime.wMonth); out[2] = YAP_MkIntTerm(stime.wDay); out[3] = YAP_MkIntTerm(stime.wHour); out[4] = YAP_MkIntTerm(stime.wMinute); out[5] = YAP_MkIntTerm(stime.wSecond); #elif HAVE_TIME time_t tp; if ((tp = time(NULL)) == -1) { return(YAP_Unify(YAP_ARG2, YAP_MkIntTerm(errno))); } #ifdef HAVE_LOCALTIME { struct tm *loc = localtime(&tp); if (loc == NULL) { return(YAP_Unify(YAP_ARG2, YAP_MkIntTerm(errno))); } out[0] = YAP_MkIntTerm(1900+loc->tm_year); out[1] = YAP_MkIntTerm(1+loc->tm_mon); out[2] = YAP_MkIntTerm(loc->tm_mday); out[3] = YAP_MkIntTerm(loc->tm_hour); out[4] = YAP_MkIntTerm(loc->tm_min); out[5] = YAP_MkIntTerm(loc->tm_sec); } #else oops #endif /* HAVE_LOCALTIME */ #else oops #endif /* HAVE_TIME */ tf = YAP_MkApplTerm(YAP_MkFunctor(YAP_LookupAtom("datime"),6), 6, out); return YAP_Unify(YAP_ARG1, tf); } #define BUF_SIZE 1024 /* Return a list of files for a directory */ static YAP_Bool list_directory(void) { YAP_Term tf = YAP_MkAtomTerm(YAP_LookupAtom("[]")); long sl = YAP_InitSlot(tf); char *buf = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1)); #if defined(__MINGW32__) || _MSC_VER struct _finddata_t c_file; char bs[BUF_SIZE]; long hFile; bs[0] = '\0'; #if HAVE_STRNCPY strncpy(bs, buf, BUF_SIZE); #else strcpy(bs, buf); #endif #if HAVE_STRNCAT strncat(bs, "/*", BUF_SIZE); #else strcat(bs, "/*"); #endif if ((hFile = _findfirst(bs, &c_file)) == -1L) { return(YAP_Unify(YAP_ARG2,tf)); } YAP_PutInSlot(sl, YAP_MkPairTerm(YAP_MkAtomTerm(YAP_LookupAtom(c_file.name)), YAP_GetFromSlot(sl))); while (_findnext( hFile, &c_file) == 0) { YAP_Term ti = YAP_MkAtomTerm(YAP_LookupAtom(c_file.name)); YAP_PutInSlot(sl,YAP_MkPairTerm(ti, YAP_GetFromSlot(sl))); } _findclose( hFile ); #else #if __ANDROID__ { extern AAssetManager *assetManager; const char *dirName = buf+strlen("/assets/"); AAssetManager* mgr = assetManager; AAssetDir *de; const char* dp; if ((de = AAssetManager_openDir(mgr, dirName)) == NULL) { return(YAP_Unify(YAP_ARG3, YAP_MkIntTerm(errno))); } while (( dp = AAssetDir_getNextFileName(de))) { YAP_Term ti = YAP_MkAtomTerm(YAP_LookupAtom(dp)); YAP_PutInSlot(sl,YAP_MkPairTerm(ti, YAP_GetFromSlot(sl))); } AAssetDir_close(de); } #endif #if HAVE_OPENDIR { DIR *de; struct dirent *dp; if ((de = opendir(buf)) == NULL) { return(YAP_Unify(YAP_ARG3, YAP_MkIntTerm(errno))); } while ((dp = readdir(de))) { YAP_Term ti = YAP_MkAtomTerm(YAP_LookupAtom(dp->d_name)); YAP_PutInSlot(sl,YAP_MkPairTerm(ti, YAP_GetFromSlot(sl))); } closedir(de); } #endif /* HAVE_OPENDIR */ #endif tf = YAP_GetFromSlot(sl); return YAP_Unify(YAP_ARG2, tf); } static YAP_Bool p_unlink(void) { char *fd = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1)); #if defined(__MINGW32__) || _MSC_VER if (_unlink(fd) == -1) #else if (unlink(fd) == -1) #endif { /* return an error number */ return(YAP_Unify(YAP_ARG2, YAP_MkIntTerm(errno))); } return(TRUE); } static YAP_Bool p_rmdir(void) { char *fd = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1)); #if defined(__MINGW32__) || _MSC_VER if (_rmdir(fd) == -1) { #else if (rmdir(fd) == -1) { #endif /* return an error number */ return(YAP_Unify(YAP_ARG2, YAP_MkIntTerm(errno))); } return(TRUE); } static YAP_Bool rename_file(void) { char *s1 = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1)); char *s2 = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG2)); #if HAVE_RENAME if (rename(s1, s2) == -1) { /* return an error number */ return(YAP_Unify(YAP_ARG3, YAP_MkIntTerm(errno))); } #endif return(TRUE); } static YAP_Bool dir_separator(void) { return(YAP_Unify(YAP_ARG1,YAP_MkAtomTerm(YAP_LookupAtom("/")))); } static YAP_Bool file_property(void) { const char *fd; #if HAVE_LSTAT struct stat buf; fd = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1)); if (lstat(fd, &buf) == -1) { /* return an error number */ return(YAP_Unify(YAP_ARG7, YAP_MkIntTerm(errno))); } if (S_ISREG(buf.st_mode)) { if (!(YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("regular"))) && YAP_Unify(YAP_ARG6, YAP_MkIntTerm(0)))) return(FALSE); } else if (S_ISDIR(buf.st_mode)) { if (!(YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("directory"))) && YAP_Unify(YAP_ARG6, YAP_MkIntTerm(0)))) return(FALSE); } else if (S_ISFIFO(buf.st_mode)) { if (!(YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("fifo"))) && YAP_Unify(YAP_ARG6, YAP_MkIntTerm(0)))) return(FALSE); } else if (S_ISLNK(buf.st_mode)) { if (!YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("symlink")))) return(FALSE); #if HAVE_READLINK { char tmp[256]; int n; if ((n = readlink(fd,tmp,256)) == -1) { return(YAP_Unify(YAP_ARG7, YAP_MkIntTerm(errno))); } tmp[n] = '\0'; if(!YAP_Unify(YAP_ARG6,YAP_MkAtomTerm(YAP_LookupAtom(tmp)))) { return(FALSE); } } #else if (!YAP_Unify(YAP_ARG6, YAP_MkIntTerm(0))) return(FALSE); #endif } else if (S_ISSOCK(buf.st_mode)) { if (!(YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("socket"))) && YAP_Unify(YAP_ARG6, YAP_MkIntTerm(0)))) return(FALSE); } else { if (!(YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("unknown"))) && YAP_Unify(YAP_ARG6, YAP_MkIntTerm(0)))) return(FALSE); } #elif defined(__MINGW32__) || _MSC_VER /* for some weird reason _stat did not work with mingw32 */ struct _stat buf; fd = YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1)); if (_stat(fd, &buf) != 0) { /* return an error number */ return(YAP_Unify(YAP_ARG7, YAP_MkIntTerm(errno))); } if (buf.st_mode & S_IFREG) { if (!YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("regular")))) return(FALSE); } else if (buf.st_mode & S_IFDIR) { if (!YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("directory")))) return(FALSE); } else { if (!YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("unknown")))) return(FALSE); } #endif return ( YAP_Unify(YAP_ARG3, YAP_MkIntTerm(buf.st_size)) && YAP_Unify(YAP_ARG4, YAP_MkIntTerm(buf.st_mtime)) && YAP_Unify(YAP_ARG5, YAP_MkIntTerm(buf.st_mode)) ); } /* temporary files */ static YAP_Bool p_mktemp(void) { #if HAVE_MKSTEMP || HAVE_MKTEMP || defined(__MINGW32__) || _MSC_VER char *s, tmp[BUF_SIZE]; s = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1)); #if HAVE_STRNCPY strncpy(tmp, s, BUF_SIZE); #else strcpy(tmp, s); #endif #if defined(__MINGW32__) || _MSC_VER if ((s = _mktemp(tmp)) == NULL) { /* return an error number */ return(YAP_Unify(YAP_ARG3, YAP_MkIntTerm(errno))); } return(YAP_Unify(YAP_ARG2,YAP_MkAtomTerm(YAP_LookupAtom(s)))); #elif HAVE_MKSTEMP strcpy(tmp, "/tmp/YAP_tmpXXXXXXXX"); if(mkstemp(tmp) == -1) { /* return an error number */ return(YAP_Unify(YAP_ARG3, YAP_MkIntTerm(errno))); } return YAP_Unify(YAP_ARG2,YAP_MkAtomTerm(YAP_LookupAtom(tmp))); #else if ((s = mktemp(tmp)) == NULL) { /* return an error number */ return(YAP_Unify(YAP_ARG3, YAP_MkIntTerm(errno))); } return YAP_Unify(YAP_ARG2,YAP_MkAtomTerm(YAP_LookupAtom(s))); #endif #else return FALSE; #endif return(TRUE); } static YAP_Bool p_tmpnam(void) { #if HAVE_MKSTEMP char s[21]; strcpy(s, "/tmp/YAP_tmpXXXXXXXX"); if(mkstemp(s) == -1) return FALSE; return YAP_Unify(YAP_ARG1,YAP_MkAtomTerm(YAP_LookupAtom(s))); #elif HAVE_MKTEMP char *s; if (!(s = mktemp("/tmp/YAP_tmpXXXXXXXX"))) return FALSE; return YAP_Unify(YAP_ARG1,YAP_MkAtomTerm(YAP_LookupAtom(s))); #elif HAVE_TMPNAM char buf[L_tmpnam], *s; if (!(s = tmpnam(buf))) return FALSE; return YAP_Unify(YAP_ARG1,YAP_MkAtomTerm(YAP_LookupAtom(s))); #else return FALSE; #endif } static YAP_Bool p_tmpdir(void) { #if defined(__MINGW32__) || _MSC_VER char buf[512]; DWORD out = GetTempPath(512, buf); if (!out) { return(YAP_Unify(YAP_ARG2, WinError())); } if (out > 511) { char *nbuf = malloc(out+1); if (!nbuf) return YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("no malloc memory"))); out = GetTempPath(512, nbuf); if (!out) { return YAP_Unify(YAP_ARG2, WinError()); } return YAP_Unify(YAP_ARG1,YAP_MkAtomTerm(YAP_LookupAtom(nbuf))); } return YAP_Unify(YAP_ARG1,YAP_MkAtomTerm(YAP_LookupAtom(buf))); #else char *s; if ((s = getenv("TMPDIR"))) return YAP_Unify(YAP_ARG1,YAP_MkAtomTerm(YAP_LookupAtom(s))); #ifdef P_tmpdir return YAP_Unify(YAP_ARG1,YAP_MkAtomTerm(YAP_LookupAtom(P_tmpdir))); #endif return YAP_Unify(YAP_ARG1,YAP_MkAtomTerm(YAP_LookupAtom("/tmp"))); #endif } /* return YAP's environment */ static YAP_Bool p_environ(void) { #if HAVE_ENVIRON && 0 #if HAVE__NSGETENVIRON char ** ptr = _NSGetEnviron(); #elif defined(__MINGW32__) || _MSC_VER extern char **_environ; char ** ptr = _environ; #else extern char **environ; char ** ptr = environ; #endif YAP_Term t1 = YAP_ARG1; long int i; i = YAP_IntOfTerm(t1); if (ptr[i] == NULL) return(FALSE); else { YAP_Term t = YAP_BufferToString(ptr[i]); return(YAP_Unify(t, YAP_ARG2)); } #else YAP_Error(0, 0L, "environ not available in this configuration" ); return(FALSE); #endif } #if defined(__MINGW32__) || _MSC_VER static HANDLE get_handle(YAP_Term ti, DWORD fd) { if (YAP_IsAtomTerm(ti)) { HANDLE out; SECURITY_ATTRIBUTES satt; satt.nLength = sizeof(satt); satt.lpSecurityDescriptor = NULL; satt.bInheritHandle = TRUE; out = CreateFile("NUL", GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, &satt, OPEN_EXISTING, 0, NULL); return(out); } else { if (YAP_IsIntTerm(ti)) { return(GetStdHandle(fd)); } else return((HANDLE)YAP_StreamToFileNo(ti)); } } static void close_handle(YAP_Term ti, HANDLE h) { if (YAP_IsAtomTerm(ti)) { CloseHandle(h); } } #endif /* execute a command as a detached process */ static YAP_Bool execute_command(void) { YAP_Term ti = YAP_ARG2, to = YAP_ARG3, te = YAP_ARG4; int res; YAP_Term AtomNull = YAP_MkAtomTerm(YAP_LookupAtom("null")); #if defined(__MINGW32__) || _MSC_VER HANDLE inpf, outf, errf; DWORD CreationFlags = 0; STARTUPINFO StartupInfo; PROCESS_INFORMATION ProcessInformation; inpf = get_handle(ti, STD_INPUT_HANDLE); if (inpf == INVALID_HANDLE_VALUE) { return(YAP_Unify(YAP_ARG6, WinError())); } outf = get_handle(to, STD_OUTPUT_HANDLE); if (outf == INVALID_HANDLE_VALUE) { close_handle(ti, inpf); return(YAP_Unify(YAP_ARG6, WinError())); } errf = get_handle(te, STD_OUTPUT_HANDLE); if (errf == INVALID_HANDLE_VALUE) { close_handle(ti, inpf); close_handle(to, outf); return(YAP_Unify(YAP_ARG6, WinError())); } if (!YAP_IsIntTerm(ti) && !YAP_IsIntTerm(to) && !YAP_IsIntTerm(te)) { /* we do not keep a current stream */ CreationFlags = DETACHED_PROCESS; } StartupInfo.cb = sizeof(STARTUPINFO); StartupInfo.lpReserved = NULL; StartupInfo.lpDesktop = NULL; /* inherit */ StartupInfo.lpTitle = NULL; /* we do not create a new console window */ StartupInfo.dwFlags = STARTF_USESTDHANDLES; StartupInfo.cbReserved2 = 0; StartupInfo.lpReserved2 = NULL; StartupInfo.hStdInput = inpf; StartupInfo.hStdOutput = outf; StartupInfo.hStdError = errf; /* got stdin, stdout and error as I like it */ if (CreateProcess(NULL, (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1)), NULL, NULL, TRUE, CreationFlags, NULL, NULL, &StartupInfo, &ProcessInformation) == FALSE) { close_handle(ti, inpf); close_handle(to, outf); close_handle(te, errf); return(YAP_Unify(YAP_ARG6, WinError())); } close_handle(ti, inpf); close_handle(to, outf); close_handle(te, errf); res = ProcessInformation.dwProcessId; return(YAP_Unify(YAP_ARG5,YAP_MkIntTerm(res))); #else /* UNIX CODE */ int inpf, outf, errf; /* process input first */ if (ti == AtomNull) { inpf = open("/dev/null", O_RDONLY); } else { int sd; if (YAP_IsIntTerm(ti)) sd = YAP_IntOfTerm(ti); else sd = YAP_StreamToFileNo(ti); if (sd == 0) inpf = 0; else inpf = dup(sd); } if (inpf < 0) { /* return an error number */ return(YAP_Unify(YAP_ARG6, YAP_MkIntTerm(errno))); } /* then output stream */ if (to == AtomNull) { outf = open("/dev/zero", O_WRONLY); } else { int sd; if (YAP_IsIntTerm(to)) sd = YAP_IntOfTerm(to); else sd = YAP_StreamToFileNo(to); if (sd == 1) outf = 1; else outf = dup(sd); } if (outf < 0) { /* return an error number */ if (inpf != 0) close(inpf); return(YAP_Unify(YAP_ARG6, YAP_MkIntTerm(errno))); } /* then error stream */ if (te == AtomNull) { errf = open("/dev/zero", O_WRONLY); } else { int sd; if (YAP_IsIntTerm(te)) sd = YAP_IntOfTerm(te); else sd = YAP_StreamToFileNo(te); if (sd == 2) errf = 2; else errf = dup(sd); } if (errf < 0) { /* return an error number */ if (inpf != 0) close(inpf); if (outf != 1) close(outf); return(YAP_Unify(YAP_ARG6, YAP_MkIntTerm(errno))); } YAP_FlushAllStreams(); /* we are now ready to fork */ if ((res = fork()) < 0) { /* close streams we don't need */ if (inpf != 0) close(inpf); if (outf != 1) close(outf); if (errf != 2) close(errf); /* return an error number */ return(YAP_Unify(YAP_ARG6, YAP_MkIntTerm(errno))); } else if (res == 0) { char *argv[4]; /* child */ /* close current streams, but not std streams */ YAP_CloseAllOpenStreams(); if (inpf != 0) { close(0); if (dup(inpf) != 0) exit(1); close(inpf); } if (outf != 1) { close(1); if (dup(outf) != 1) exit(1); close(outf); } if (errf != 2) { close(2); if (dup(errf) != 2) exit(2); close(errf); } argv[0] = "sh"; argv[1] = "-c"; argv[2] = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1)); argv[3] = NULL; execv("/bin/sh", argv); exit(127); /* we have the streams where we want them, just want to execute now */ } else { if (inpf != 0) close(inpf); if (outf != 1) close(outf); if (errf != 2) close(errf); return(YAP_Unify(YAP_ARG5,YAP_MkIntTerm(res))); } #endif /* UNIX code */ } /* execute a command as a detached process */ static YAP_Bool do_system(void) { char *command = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1)); #if HAVE_SYSTEM int sys = system(command); if (sys < 0) { return YAP_Unify(YAP_ARG3,YAP_MkIntTerm(errno)); } return YAP_Unify(YAP_ARG2, YAP_MkIntTerm(sys)); #else YAP_Error(0,0L,"system not available in this configuration, trying %s", command); return FALSE; #endif } /* execute a command as a detached process */ static YAP_Bool do_shell(void) { #if defined(__MINGW32__) || _MSC_VER YAP_Error(0,0L,"system not available in this configuration"); return(FALSE); #elif HAVE_SYSTEM char *buf = YAP_AllocSpaceFromYap(BUF_SIZE); int sys; if (buf == NULL) { YAP_Error(0,0L,"No Temporary Space for Shell"); return(FALSE); } #if HAVE_STRNCPY strncpy(buf, YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1)), BUF_SIZE); strncpy(buf, " ", BUF_SIZE); strncpy(buf, YAP_AtomName(YAP_AtomOfTerm(YAP_ARG2)), BUF_SIZE); strncpy(buf, " ", BUF_SIZE); strncpy(buf, YAP_AtomName(YAP_AtomOfTerm(YAP_ARG3)), BUF_SIZE); #else strcpy(buf, YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1))); strcpy(buf, YAP_AtomName(YAP_AtomOfTerm(YAP_ARG2))); strcpy(buf, " "); strcpy(buf, YAP_AtomName(YAP_AtomOfTerm(YAP_ARG3))); #endif sys = system(buf); YAP_FreeSpaceFromYap(buf); if (sys < 0) { return YAP_Unify(YAP_ARG5,YAP_MkIntTerm(errno)); } return YAP_Unify(YAP_ARG4, YAP_MkIntTerm(sys)); #else char *cptr[4]; int t; int sys; cptr[0]= (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1)); cptr[1]= (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG2)); cptr[2]= (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG3)); cptr[3]= NULL; t = fork(); if (t < 0) { return YAP_Unify(YAP_ARG5,YAP_MkIntTerm(errno)); } else if (t == 0) { t = execvp(cptr[0],cptr); return t; } else { t = wait(&sys); if (t < 0) { return YAP_Unify(YAP_ARG5,YAP_MkIntTerm(errno)); } } return YAP_Unify(YAP_ARG4, YAP_MkIntTerm(sys)); #endif } /* execute a command as a detached process */ static YAP_Bool plwait(void) { long int pid = YAP_IntOfTerm(YAP_ARG1); #if defined(__MINGW32__) || _MSC_VER HANDLE proc = OpenProcess(STANDARD_RIGHTS_REQUIRED|SYNCHRONIZE, FALSE, pid); DWORD ExitCode; if (proc == NULL) { return(YAP_Unify(YAP_ARG3, WinError())); } if (WaitForSingleObject(proc, INFINITE) == WAIT_FAILED) { return(YAP_Unify(YAP_ARG3, WinError())); } if (GetExitCodeProcess(proc, &ExitCode) == 0) { return(YAP_Unify(YAP_ARG4, WinError())); } CloseHandle(proc); return(YAP_Unify(YAP_ARG2, YAP_MkIntTerm(ExitCode))); #else do { int status; /* check for interruptions */ if (waitpid(pid, &status, 0) == -1) { if (errno) { if (errno == EINTR) { continue; } return YAP_Unify( YAP_ARG3, YAP_MkIntTerm(errno)); } } if (WIFEXITED( status ) ) { return YAP_Unify(YAP_ARG2, YAP_MkIntTerm(WEXITSTATUS(status)) ); } else if (WIFSIGNALED( status )) { return YAP_Unify(YAP_ARG3, YAP_MkAtomTerm(YAP_LookupAtom("signal")) ) && YAP_Unify(YAP_ARG4, YAP_MkIntTerm( WTERMSIG(status)) ); } else /* WIFSTOPPED(status) */ { return YAP_Unify(YAP_ARG3, YAP_MkAtomTerm(YAP_LookupAtom("stopped")) ) && YAP_Unify(YAP_ARG4, YAP_MkIntTerm( WSTOPSIG(status) ) ); } } while(TRUE); #endif } static YAP_Bool p_sleep(void) { YAP_Term ts = YAP_ARG1; #if defined(__MINGW32__) || _MSC_VER { unsigned long int secs = 0, usecs = 0, msecs, out; if (YAP_IsIntTerm(ts)) { secs = YAP_IntOfTerm(ts); } else if (YAP_IsFloatTerm(ts)) { double tfl = YAP_FloatOfTerm(ts); if (tfl > 1.0) secs = tfl; else usecs = tfl*1000000; } msecs = secs*1000 + usecs/1000; Sleep(msecs); /* no errors possible */ out = 0; return(YAP_Unify(YAP_ARG2, YAP_MkIntTerm(out))); } #elif HAVE_NANOSLEEP { struct timespec req; int out; if (YAP_IsFloatTerm(ts)) { double tfl = YAP_FloatOfTerm(ts); req.tv_nsec = (tfl-floor(tfl))*1000000000; req.tv_sec = rint(tfl); } else { req.tv_nsec = 0; req.tv_sec = YAP_IntOfTerm(ts); } out = nanosleep(&req, NULL); return(YAP_Unify(YAP_ARG2, YAP_MkIntTerm(out))); } #elif HAVE_USLEEP { useconds_t usecs; if (YAP_IsFloatTerm(ts)) { double tfl = YAP_FloatOfTerm(ts); usecs = rint(tfl*1000000); } else { usecs = YAP_IntOfTerm(ts)*1000000; } out = usleep(usecs); return(YAP_Unify(YAP_ARG2, YAP_MkIntTerm(out))); } #elif HAVE_SLEEP { unsigned int secs, out; if (YAP_IsFloatTerm(ts)) { secs = rint(YAP_FloatOfTerm(ts)); } else { secs = YAP_IntOfTerm(ts); } out = sleep(secs); return(YAP_Unify(YAP_ARG2, YAP_MkIntTerm(out))); } #else YAP_Error(0,0L,"sleep not available in this configuration"); return FALSE: #endif } /* host info */ static YAP_Bool host_name(void) { #if defined(__MINGW32__) || _MSC_VER char name[MAX_COMPUTERNAME_LENGTH+1]; DWORD nSize = MAX_COMPUTERNAME_LENGTH+1; if (GetComputerName(name, &nSize) == 0) { return(YAP_Unify(YAP_ARG2, WinError())); } #else #if HAVE_GETHOSTNAME char name[256]; if (gethostname(name, 256) == -1) { /* return an error number */ return(YAP_Unify(YAP_ARG2, YAP_MkIntTerm(errno))); } #endif #endif /* defined(__MINGW32__) || _MSC_VER */ return(YAP_Unify(YAP_ARG1, YAP_MkAtomTerm(YAP_LookupAtom(name)))); } static YAP_Bool host_id(void) { #if HAVE_GETHOSTID return(YAP_Unify(YAP_ARG1, YAP_MkIntTerm(gethostid()))); #else return(YAP_Unify(YAP_ARG1, YAP_MkIntTerm(0))); #endif } static YAP_Bool pid(void) { #if defined(__MINGW32__) || _MSC_VER return(YAP_Unify(YAP_ARG1, YAP_MkIntTerm(_getpid()))); #else return(YAP_Unify(YAP_ARG1, YAP_MkIntTerm(getpid()))); #endif } static YAP_Bool win(void) { #if defined(__MINGW32__) || _MSC_VER return(TRUE); #else return(FALSE); #endif } static YAP_Bool p_kill(void) { #if defined(__MINGW32__) || _MSC_VER /* Windows does not support cross-process signals, so we shall do the SICStus thing and assume that a signal to a process will always kill it */ HANDLE proc = OpenProcess(STANDARD_RIGHTS_REQUIRED|PROCESS_TERMINATE, FALSE, YAP_IntOfTerm(YAP_ARG1)); if (proc == NULL) { return(YAP_Unify(YAP_ARG3, WinError())); } if (TerminateProcess(proc, -1) == 0) { return(YAP_Unify(YAP_ARG3, WinError())); } CloseHandle(proc); #else if (kill(YAP_IntOfTerm(YAP_ARG1), YAP_IntOfTerm(YAP_ARG2)) < 0) { /* return an error number */ return(YAP_Unify(YAP_ARG3, YAP_MkIntTerm(errno))); } #endif /* defined(__MINGW32__) || _MSC_VER */ return(TRUE); } #if HAVE_OPENSSL_RIPEMD_H #include #endif /** md5( +Text, -Key, -Remaining keyq * encode text using OpenSSL * * arg Text as List of codes * arg2 and 3: difference list with character codes. * * @return whether ARG1's md5 unifies with the difference liat. */ static YAP_Bool md5(void) { #if HAVE_OPENSSL_RIPEMD_H char buf[21]; char *s = (char *) YAP_AllocSpaceFromYap(YAP_ListLength(YAP_ARG1)+1); YAP_StringToBuffer( YAP_ARG1 , s, 20 ) ; RIPEMD160((const unsigned char *)s, strlen(s), (unsigned char *)buf); YAP_FreeSpaceFromYap(s); return YAP_Unify( YAP_ARG2, YAP_BufferToDiffList( buf , YAP_ARG3 ) ); #endif /* defined(__MINGW32__) || _MSC_VER */ return FALSE; } static YAP_Bool error_message(void) { #if HAVE_STRERROR return YAP_Unify(YAP_ARG2,YAP_MkAtomTerm(YAP_LookupAtom(strerror(YAP_IntOfTerm(YAP_ARG1))))); #else return YAP_Unify(YAP_ARG2,YAP_ARG1); #endif } void init_sys(void) { #if HAVE_MKTIME tzset(); #endif YAP_UserCPredicate("datime", datime, 2); YAP_UserCPredicate("mktime", sysmktime, 8); YAP_UserCPredicate("list_directory", list_directory, 3); YAP_UserCPredicate("file_property", file_property, 7); YAP_UserCPredicate("unlink", p_unlink, 2); YAP_UserCPredicate("rmdir", p_rmdir, 2); YAP_UserCPredicate("dir_separator", dir_separator, 1); YAP_UserCPredicate("p_environ", p_environ, 2); YAP_UserCPredicate("exec_command", execute_command, 6); YAP_UserCPredicate("do_shell", do_shell, 5); YAP_UserCPredicate("do_system", do_system, 3); YAP_UserCPredicate("plwait", plwait, 4); YAP_UserCPredicate("host_name", host_name, 2); YAP_UserCPredicate("host_id", host_id, 2); YAP_UserCPredicate("pid", pid, 2); YAP_UserCPredicate("kill", p_kill, 3); YAP_UserCPredicate("mktemp", p_mktemp, 3); YAP_UserCPredicate("tmpnam", p_tmpnam, 2); YAP_UserCPredicate("tmpdir", p_tmpdir, 2); YAP_UserCPredicate("rename_file", rename_file, 3); YAP_UserCPredicate("sleep", p_sleep, 2); YAP_UserCPredicate("error_message", error_message, 2); YAP_UserCPredicate("win", win, 0); YAP_UserCPredicate("md5", md5, 3); } #ifdef _WIN32 #include int WINAPI win_sys(HANDLE, DWORD, LPVOID); int WINAPI win_sys(HANDLE hinst, DWORD reason, LPVOID reserved) { switch (reason) { case DLL_PROCESS_ATTACH: break; case DLL_PROCESS_DETACH: break; case DLL_THREAD_ATTACH: break; case DLL_THREAD_DETACH: break; } return 1; } #endif