1025 lines
28 KiB
C
1025 lines
28 KiB
C
/*************************************************************************
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* *
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* YAP Prolog *
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* *
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* Yap Prolog was developed at NCCUP - Universidade do Porto *
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* *
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* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
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* *
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**************************************************************************
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* *
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*
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* comments: regular expression interpreter *
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* *
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*************************************************************************/
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#include "YapInterface.h"
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#include <stdlib.h>
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#if __ANDROID__
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#include <android/asset_manager.h>
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#include <android/asset_manager_jni.h>
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#include <android/log.h>
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#include <jni.h>
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#endif
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#include "YapStreams.h"
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#include "VFS.h"
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#include "crypto/md5.h"
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <stdio.h>
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#if HAVE_TIME_H
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#include <time.h>
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#endif
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#if HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#if HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#if HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#if HAVE_MATH_H
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#include <math.h>
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#endif
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#if HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#if HAVE_STRING_H
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#include <string.h>
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#endif
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#if HAVE_SIGNAL_H
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#include <signal.h>
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#endif
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#if HAVE_SYS_WAIT_H
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#include <sys/wait.h>
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#endif
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#if HAVE_DIRENT_H
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#include <dirent.h>
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#endif
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#if HAVE_DIRECT_H
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#include <direct.h>
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#endif
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#if defined(__MINGW32__) || _MSC_VER
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#include <io.h>
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#include <process.h>
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#include <windows.h>
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#endif
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#ifdef __MINGW32__
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#ifdef HAVE_ENVIRON
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#undef HAVE_ENVIRON
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#endif
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#endif
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#if __ANDROID__
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#include <android/asset_manager.h>
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#include <android/asset_manager_jni.h>
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#include <android/log.h>
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#endif
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X_API void init_sys(void);
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#if defined(__MINGW32__) || _MSC_VER
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static YAP_Term WinError(void) {
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char msg[256];
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/* Error, we could not read time */
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FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
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NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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msg, 256, NULL);
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return (YAP_MkAtomTerm(YAP_LookupAtom(msg)));
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}
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#endif
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/* Return time in a structure */
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static YAP_Bool sysmktime(void) {
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#if defined(__MINGW32__) || _MSC_VER
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SYSTEMTIME stime, stime0;
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FILETIME ftime, ftime0;
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stime.wYear = YAP_IntOfTerm(YAP_ARG1);
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stime.wMonth = YAP_IntOfTerm(YAP_ARG2);
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stime.wDay = YAP_IntOfTerm(YAP_ARG3);
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stime.wHour = YAP_IntOfTerm(YAP_ARG4);
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stime.wMinute = YAP_IntOfTerm(YAP_ARG5);
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stime.wSecond = YAP_IntOfTerm(YAP_ARG6);
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stime.wMilliseconds = 0;
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stime0.wYear = 1970;
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stime0.wMonth = 1;
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stime0.wDay = 1;
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stime0.wHour = 12;
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stime0.wMinute = 0;
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stime0.wSecond = 0;
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stime0.wMilliseconds = 0;
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if (!SystemTimeToFileTime(&stime, &ftime)) {
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return YAP_Unify(YAP_ARG8, YAP_MkIntTerm(errno));
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}
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if (!SystemTimeToFileTime(&stime0, &ftime0)) {
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return YAP_Unify(YAP_ARG8, YAP_MkIntTerm(errno));
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}
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#if __GNUC__
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{
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unsigned long long f1 = (((unsigned long long)ftime.dwHighDateTime) << 32) +
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(unsigned long long)ftime.dwLowDateTime;
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unsigned long long f0 =
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(((unsigned long long)ftime0.dwHighDateTime) << 32) +
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(unsigned long long)ftime0.dwLowDateTime;
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return YAP_Unify(YAP_ARG7, YAP_MkIntTerm((long int)((f1 - f0) / 10000000)));
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}
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#else
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return FALSE;
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#endif
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#else
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#ifdef HAVE_MKTIME
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struct tm loc;
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time_t tim;
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loc.tm_year = YAP_IntOfTerm(YAP_ARG1) - 1900;
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loc.tm_mon = YAP_IntOfTerm(YAP_ARG2) - 1;
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loc.tm_mday = YAP_IntOfTerm(YAP_ARG3);
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loc.tm_hour = YAP_IntOfTerm(YAP_ARG4);
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loc.tm_min = YAP_IntOfTerm(YAP_ARG5);
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loc.tm_sec = YAP_IntOfTerm(YAP_ARG6);
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loc.tm_isdst = -1;
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if ((tim = mktime(&loc)) == (time_t)-1) {
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return YAP_Unify(YAP_ARG8, YAP_MkIntTerm(errno));
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}
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return YAP_Unify(YAP_ARG7, YAP_MkIntTerm(tim));
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#else
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oops
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#endif /* HAVE_MKTIME */
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#endif /* WINDOWS */
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}
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/* Return time in a structure */
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static YAP_Bool datime(void) {
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YAP_Term tf, out[6];
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#if defined(__MINGW32__) || _MSC_VER
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SYSTEMTIME stime;
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GetLocalTime(&stime);
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out[0] = YAP_MkIntTerm(stime.wYear);
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out[1] = YAP_MkIntTerm(stime.wMonth);
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out[2] = YAP_MkIntTerm(stime.wDay);
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out[3] = YAP_MkIntTerm(stime.wHour);
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out[4] = YAP_MkIntTerm(stime.wMinute);
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out[5] = YAP_MkIntTerm(stime.wSecond);
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#elif HAVE_TIME
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time_t tp;
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if ((tp = time(NULL)) == -1) {
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return (YAP_Unify(YAP_ARG2, YAP_MkIntTerm(errno)));
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}
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#ifdef HAVE_LOCALTIME
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{
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struct tm *loc = localtime(&tp);
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if (loc == NULL) {
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return (YAP_Unify(YAP_ARG2, YAP_MkIntTerm(errno)));
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}
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out[0] = YAP_MkIntTerm(1900 + loc->tm_year);
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out[1] = YAP_MkIntTerm(1 + loc->tm_mon);
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out[2] = YAP_MkIntTerm(loc->tm_mday);
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out[3] = YAP_MkIntTerm(loc->tm_hour);
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out[4] = YAP_MkIntTerm(loc->tm_min);
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out[5] = YAP_MkIntTerm(loc->tm_sec);
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}
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#else
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oops
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#endif /* HAVE_LOCALTIME */
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#else
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oops
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#endif /* HAVE_TIME */
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tf = YAP_MkApplTerm(YAP_MkFunctor(YAP_LookupAtom("datime"), 6), 6, out);
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return YAP_Unify(YAP_ARG1, tf);
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}
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#define BUF_SIZE 1024
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/* Return a list of files for a directory */
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static YAP_Bool list_directory(void) {
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YAP_Term tf = YAP_MkAtomTerm(YAP_LookupAtom("[]"));
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long sl = YAP_InitSlot(tf);
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char *buf = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1));
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#if defined(__MINGW32__) || _MSC_VER
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struct _finddata_t c_file;
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char bs[BUF_SIZE];
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long hFile;
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bs[0] = '\0';
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#if HAVE_STRNCPY
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strncpy(bs, buf, BUF_SIZE);
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#else
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strcpy(bs, buf);
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#endif
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#if HAVE_STRNCAT
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strncat(bs, "/*", BUF_SIZE);
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#else
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strcat(bs, "/*");
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#endif
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if ((hFile = _findfirst(bs, &c_file)) == -1L) {
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return (YAP_Unify(YAP_ARG2, tf));
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}
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YAP_PutInSlot(sl, YAP_MkPairTerm(YAP_MkAtomTerm(YAP_LookupAtom(c_file.name)),
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YAP_GetFromSlot(sl)));
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while (_findnext(hFile, &c_file) == 0) {
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YAP_Term ti = YAP_MkAtomTerm(YAP_LookupAtom(c_file.name));
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YAP_PutInSlot(sl, YAP_MkPairTerm(ti, YAP_GetFromSlot(sl)));
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}
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_findclose(hFile);
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#else
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#if __ANDROID__
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{
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const char *dirName = buf + strlen("/assets/");
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AAssetManager *mgr = GLOBAL_VFS->priv[0].mgr;
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AAssetDir *de;
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const char *dp;
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if ((de = AAssetManager_openDir(mgr, dirName)) == NULL) {
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return (YAP_Unify(YAP_ARG3, YAP_MkIntTerm(errno)));
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}
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while ((dp = AAssetDir_getNextFileName(de))) {
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YAP_Term ti = YAP_MkAtomTerm(YAP_LookupAtom(dp));
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YAP_PutInSlot(sl, YAP_MkPairTerm(ti, YAP_GetFromSlot(sl)));
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}
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AAssetDir_close(de);
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}
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#endif
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#if HAVE_OPENDIR
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{
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DIR *de;
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struct dirent *dp;
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if ((de = opendir(buf)) == NULL) {
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return (YAP_Unify(YAP_ARG3, YAP_MkIntTerm(errno)));
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}
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while ((dp = readdir(de))) {
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YAP_Term ti = YAP_MkAtomTerm(YAP_LookupAtom(dp->d_name));
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YAP_PutInSlot(sl, YAP_MkPairTerm(ti, YAP_GetFromSlot(sl)));
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}
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closedir(de);
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}
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#endif /* HAVE_OPENDIR */
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#endif
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tf = YAP_GetFromSlot(sl);
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return YAP_Unify(YAP_ARG2, tf);
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}
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static YAP_Bool p_unlink(void) {
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char *fd = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1));
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#if defined(__MINGW32__) || _MSC_VER
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if (_unlink(fd) == -1)
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#else
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if (unlink(fd) == -1)
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#endif
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{
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/* return an error number */
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return (YAP_Unify(YAP_ARG2, YAP_MkIntTerm(errno)));
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}
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return (TRUE);
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}
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static YAP_Bool p_rmdir(void) {
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char *fd = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1));
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#if defined(__MINGW32__) || _MSC_VER
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if (_rmdir(fd) == -1) {
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#else
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if (rmdir(fd) == -1) {
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#endif
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/* return an error number */
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return (YAP_Unify(YAP_ARG2, YAP_MkIntTerm(errno)));
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}
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return (TRUE);
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}
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static YAP_Bool rename_file(void) {
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char *s1 = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1));
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char *s2 = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG2));
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#if HAVE_RENAME
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if (rename(s1, s2) == -1) {
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/* return an error number */
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return (YAP_Unify(YAP_ARG3, YAP_MkIntTerm(errno)));
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}
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#endif
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return (TRUE);
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}
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static YAP_Bool read_link(void) {
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char *s1 = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1));
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#if HAVE_READLINK
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char buf[MAXPATHLEN + 1];
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if (readlink(s1, buf, MAXPATHLEN) < 0)
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return false;
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/* return an error number */
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if (!YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom(buf)))) {
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return false;
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}
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#endif
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#if _WIN32
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return false;
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#endif
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return true;
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}
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static YAP_Bool dir_separator(void) {
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return (YAP_Unify(YAP_ARG1, YAP_MkAtomTerm(YAP_LookupAtom("/"))));
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}
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static YAP_Bool file_property(void) {
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const char *fd;
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#if HAVE_LSTAT
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struct stat buf;
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fd = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1));
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if (lstat(fd, &buf) == -1) {
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/* return an error number */
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return (YAP_Unify(YAP_ARG7, YAP_MkIntTerm(errno)));
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}
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if (S_ISREG(buf.st_mode)) {
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if (!(YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("regular"))) &&
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YAP_Unify(YAP_ARG6, YAP_MkIntTerm(0))))
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return (FALSE);
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} else if (S_ISDIR(buf.st_mode)) {
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if (!(YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("directory"))) &&
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YAP_Unify(YAP_ARG6, YAP_MkIntTerm(0))))
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return (FALSE);
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} else if (S_ISFIFO(buf.st_mode)) {
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if (!(YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("fifo"))) &&
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YAP_Unify(YAP_ARG6, YAP_MkIntTerm(0))))
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return (FALSE);
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} else if (S_ISLNK(buf.st_mode)) {
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if (!YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("symlink"))))
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return (FALSE);
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#if HAVE_READLINK
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{
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char tmp[256];
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int n;
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if ((n = readlink(fd, tmp, 256)) == -1) {
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return (YAP_Unify(YAP_ARG7, YAP_MkIntTerm(errno)));
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}
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tmp[n] = '\0';
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if (!YAP_Unify(YAP_ARG6, YAP_MkAtomTerm(YAP_LookupAtom(tmp)))) {
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return (FALSE);
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}
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}
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#else
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if (!YAP_Unify(YAP_ARG6, YAP_MkIntTerm(0)))
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return (FALSE);
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#endif
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} else if (S_ISSOCK(buf.st_mode)) {
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if (!(YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("socket"))) &&
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YAP_Unify(YAP_ARG6, YAP_MkIntTerm(0))))
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return (FALSE);
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} else {
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if (!(YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("unknown"))) &&
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YAP_Unify(YAP_ARG6, YAP_MkIntTerm(0))))
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return (FALSE);
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}
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#elif defined(__MINGW32__) || _MSC_VER
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/* for some weird reason _stat did not work with mingw32 */
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struct _stat buf;
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fd = YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1));
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if (_stat(fd, &buf) != 0) {
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/* return an error number */
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return (YAP_Unify(YAP_ARG7, YAP_MkIntTerm(errno)));
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}
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if (buf.st_mode & S_IFREG) {
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if (!YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("regular"))))
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return (FALSE);
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} else if (buf.st_mode & S_IFDIR) {
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if (!YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("directory"))))
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return (FALSE);
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} else {
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if (!YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom("unknown"))))
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return (FALSE);
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}
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#endif
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return (YAP_Unify(YAP_ARG3, YAP_MkIntTerm(buf.st_size)) &&
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YAP_Unify(YAP_ARG4, YAP_MkIntTerm(buf.st_mtime)) &&
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YAP_Unify(YAP_ARG5, YAP_MkIntTerm(buf.st_mode)));
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}
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/* temporary files */
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static YAP_Bool p_mktemp(void) {
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#if HAVE_MKSTEMP || HAVE_MKTEMP || defined(__MINGW32__) || _MSC_VER
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char *s, tmp[BUF_SIZE];
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s = (char *)YAP_AtomName(YAP_AtomOfTerm(YAP_ARG1));
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#if HAVE_STRNCPY
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strncpy(tmp, s, BUF_SIZE);
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#else
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strcpy(tmp, s);
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#endif
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#if defined(__MINGW32__) || _MSC_VER
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if ((s = _mktemp(tmp)) == NULL) {
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/* return an error number */
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return (YAP_Unify(YAP_ARG3, YAP_MkIntTerm(errno)));
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}
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return (YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom(s))));
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#elif HAVE_MKSTEMP
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strcpy(tmp, "/tmp/YAP_tmpXXXXXXXX");
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if (mkstemp(tmp) == -1) {
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/* return an error number */
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return (YAP_Unify(YAP_ARG3, YAP_MkIntTerm(errno)));
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}
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return YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom(tmp)));
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#else
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if ((s = mktemp(tmp)) == NULL) {
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/* return an error number */
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return (YAP_Unify(YAP_ARG3, YAP_MkIntTerm(errno)));
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}
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return YAP_Unify(YAP_ARG2, YAP_MkAtomTerm(YAP_LookupAtom(s)));
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#endif
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#else
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return FALSE;
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#endif
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return (TRUE);
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}
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static YAP_Bool p_tmpnam(void) {
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#if HAVE_MKSTEMP
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char s[21];
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strcpy(s, "/tmp/YAP_tmpXXXXXXXX");
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if (mkstemp(s) == -1)
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return FALSE;
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return YAP_Unify(YAP_ARG1, YAP_MkAtomTerm(YAP_LookupAtom(s)));
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#elif HAVE_MKTEMP
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char *s;
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if (!(s = mktemp("/tmp/YAP_tmpXXXXXXXX")))
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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)_get_osfhandle(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 */
|
|
}
|
|
|
|
/** @pred system(+ _S_)
|
|
|
|
Passes command _S_ to the Bourne shell (on UNIX environments) or the
|
|
current command interpreter in WIN32 environments.
|
|
|
|
Note that it executes them command as a detached process. It requires
|
|
`system` to be implemented by the system library.
|
|
|
|
*/
|
|
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("signalled"))) &&
|
|
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
|
|
}
|
|
|
|
/* 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 <openssl/ripemd.h>
|
|
#endif
|
|
|
|
/** md5( +Text, -Key, -Remaining keyq
|
|
* encode text using OpenSSL
|
|
*
|
|
* arg Text is a List of ASCII codes
|
|
* arg2 and 3: difference list with the character codes for the
|
|
* digest.
|
|
*
|
|
* @return whether ARG1's md5 unifies with the difference liat.
|
|
*/
|
|
static YAP_Bool md5(void) {
|
|
unsigned char buf[64];
|
|
md5_state_t pms;
|
|
const char *s;
|
|
size_t len = -1;
|
|
|
|
if (!(s = YAP_StringToBuffer(YAP_ARG1, NULL, len)) || s[0] == 0)
|
|
return false;
|
|
|
|
md5_init(&pms);
|
|
md5_append(&pms, (const unsigned char *)s, strlen(s));
|
|
md5_finish(&pms, buf);
|
|
// free((void *)s);
|
|
YAP_Term t = YAP_ARG3;
|
|
int i = 16;
|
|
while (i > 0) {
|
|
int top, bop;
|
|
i--;
|
|
top = buf[i] >> 4;
|
|
if (top > 9)
|
|
top = (top - 10) + 'a';
|
|
else
|
|
top = top + '0';
|
|
bop = buf[i] & 15;
|
|
if (bop > 9)
|
|
bop = (bop - 10) + 'a';
|
|
else
|
|
bop = bop + '0';
|
|
t = YAP_MkPairTerm(YAP_MkIntTerm(top),
|
|
YAP_MkPairTerm(YAP_MkIntTerm(bop), t));
|
|
}
|
|
return YAP_Unify(YAP_ARG2, t);
|
|
}
|
|
|
|
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
|
|
}
|
|
X_API void init_sys(void) {
|
|
#if HAVE_MKTIME
|
|
tzset();
|
|
#endif
|
|
YAP_UserCPredicate("datime", datime, 2);
|
|
YAP_UserCPredicate("mktime", sysmktime, 8);
|
|
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("list_directory", list_directory, 3);
|
|
YAP_UserCPredicate("tmpnam", p_tmpnam, 2);
|
|
YAP_UserCPredicate("tmpdir", p_tmpdir, 2);
|
|
YAP_UserCPredicate("rename_file", rename_file, 3);
|
|
YAP_UserCPredicate("read_link", read_link, 2);
|
|
YAP_UserCPredicate("error_message", error_message, 2);
|
|
YAP_UserCPredicate("win", win, 0);
|
|
YAP_UserCPredicate("md5", md5, 3);
|
|
}
|
|
|
|
#ifdef _WIN32
|
|
|
|
#include <windows.h>
|
|
|
|
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
|