1092 lines
33 KiB
C
1092 lines
33 KiB
C
/*
|
||
* tclWinPipe.c --
|
||
*
|
||
* This file implements the Windows-specific pipeline exec functions.
|
||
*
|
||
* Copyright (c) 1996 by Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution
|
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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||
*
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||
* SCCS: @(#) tclWinPipe.c 1.32 96/10/11 17:39:22
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||
*/
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||
|
||
#include "tclWinInt.h"
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||
|
||
#include <dos.h>
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||
#include <fcntl.h>
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#include <io.h>
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#include <windows.h>
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#include <sys/stat.h>
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||
|
||
/*
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||
* The following defines identify the various types of applications that
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* run under windows. There is special case code for the various types.
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||
*/
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||
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||
#define APPL_NONE 0
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||
#define APPL_DOS 1
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||
#define APPL_WIN3X 2
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||
#define APPL_WIN32 3
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||
|
||
/*
|
||
* This value indicates whether this module has been initialized.
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||
*/
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||
|
||
static int initialized = 0;
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||
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/*
|
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* This list is used to map from pids to process handles.
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||
*/
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||
typedef struct ProcInfo {
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||
HANDLE hProcess;
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DWORD dwProcessId;
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||
struct ProcInfo *nextPtr;
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||
} ProcInfo;
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||
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||
static ProcInfo *procList = NULL;
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||
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||
/*
|
||
* Declarations for functions used only in this file.
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||
*/
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||
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static int ApplicationType(Tcl_Interp *interp,
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const char *fileName, char *fullName);
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||
static void BuildCommandLine(int argc, char **argv,
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Tcl_DString *linePtr);
|
||
static char * MakeTempFile(Tcl_DString *namePtr);
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static void CopyFileByHandles(HANDLE dst, HANDLE src);
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||
static BOOL HasConsole(void);
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||
|
||
/*
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||
*----------------------------------------------------------------------
|
||
*
|
||
* Tcl_WaitPid --
|
||
*
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||
* Emulates the waitpid system call.
|
||
*
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||
* Results:
|
||
* Returns 0 if the process is still alive, -1 on an error, or
|
||
* the pid on a clean close.
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||
*
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||
* Side effects:
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||
* Unless WNOHANG is set and the wait times out, the process
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* information record will be deleted and the process handle
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* will be closed.
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*
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*----------------------------------------------------------------------
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||
*/
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||
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int
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Tcl_WaitPid(pid, statPtr, options)
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pid_t pid;
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||
int *statPtr;
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||
int options;
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{
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||
ProcInfo *infoPtr, **prevPtrPtr;
|
||
int flags, result;
|
||
DWORD ret;
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||
|
||
if (options & WNOHANG) {
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||
flags = 0;
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||
} else {
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||
flags = INFINITE;
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||
}
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if (pid == 0) {
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*statPtr = 0;
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||
return 0;
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}
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/*
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* Find the process on the process list.
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*/
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prevPtrPtr = &procList;
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for (infoPtr = procList; infoPtr != NULL;
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prevPtrPtr = &infoPtr->nextPtr, infoPtr = infoPtr->nextPtr) {
|
||
if (infoPtr->dwProcessId == (DWORD)pid) {
|
||
break;
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||
}
|
||
}
|
||
if (infoPtr == NULL) {
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||
return 0;
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||
}
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||
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||
ret = WaitForSingleObject(infoPtr->hProcess, flags);
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||
if (ret == WAIT_TIMEOUT) {
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*statPtr = 0;
|
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if (options & WNOHANG) {
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||
return 0;
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||
} else {
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||
result = 0;
|
||
}
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||
} else if (ret != WAIT_FAILED) {
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||
GetExitCodeProcess(infoPtr->hProcess, (DWORD*)statPtr);
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*statPtr = ((*statPtr << 8) & 0xff00);
|
||
result = pid;
|
||
} else {
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||
errno = ECHILD;
|
||
result = -1;
|
||
}
|
||
|
||
/*
|
||
* Remove the process from the process list and close the process handle.
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*/
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CloseHandle(infoPtr->hProcess);
|
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*prevPtrPtr = infoPtr->nextPtr;
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||
ckfree((char*)infoPtr);
|
||
|
||
return result;
|
||
}
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||
|
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/*
|
||
*----------------------------------------------------------------------
|
||
*
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* TclpCreateProcess --
|
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*
|
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* Create a child process that has the specified files as its
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* standard input, output, and error. The child process runs
|
||
* synchronously under Win32s and asynchronously under Windows NT
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||
* and Windows 95, and runs with the same environment variables
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* as the creating process.
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*
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* The complete Windows search path is searched to find the specified
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* executable. If an executable by the given name is not found,
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* automatically tries appending ".com", ".exe", and ".bat" to the
|
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* executable name.
|
||
*
|
||
* Results:
|
||
* The return value is TCL_ERROR and an error message is left in
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* interp->result if there was a problem creating the child
|
||
* process. Otherwise, the return value is TCL_OK and *pidPtr is
|
||
* filled with the process id of the child process.
|
||
*
|
||
* Side effects:
|
||
* A process is created.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
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int
|
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TclpCreateProcess(interp, argc, argv, inputFile, outputFile, errorFile,
|
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inputFileName, outputFileName, errorFileName, pidPtr)
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Tcl_Interp *interp; /* Interpreter in which to leave errors that
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* occurred when creating the child process.
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* Error messages from the child process
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* itself are sent to errorFile. */
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int argc; /* Number of arguments in following array. */
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char **argv; /* Array of argument strings. argv[0]
|
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* contains the name of the executable
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* converted to native format (using the
|
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* Tcl_TranslateFileName call). Additional
|
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* arguments have not been converted. */
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Tcl_File inputFile; /* If non-NULL, gives the file to use as
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* input for the child process. If inputFile
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* file is not readable or is NULL, the child
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* will receive no standard input. */
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Tcl_File outputFile; /* If non-NULL, gives the file that
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* receives output from the child process. If
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* outputFile file is not writeable or is
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* NULL, output from the child will be
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* discarded. */
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Tcl_File errorFile; /* If non-NULL, gives the file that
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* receives errors from the child process. If
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* errorFile file is not writeable or is NULL,
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* errors from the child will be discarded.
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* errorFile may be the same as outputFile. */
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char *inputFileName; /* If non-NULL, gives the name of the disk
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* file that corresponds to inputFile. If
|
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* NULL, then the name was not available
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* because inputFile corresponds to a channel,
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* pipe, socket, etc. */
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char *outputFileName; /* If non-NULL, gives the name of the disk
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* file that corresponds to outputFile. If
|
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* NULL, then the name was not available
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* because outputFile corresponds to a
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* channel, pipe, socket, etc. */
|
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char *errorFileName; /* If non-NULL, gives the name of the disk
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* file that corresponds to errorFile. If
|
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* NULL, then the name was not available
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* because errorFile corresponds to a channel,
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* pipe, socket, etc. */
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int *pidPtr; /* If this procedure is successful, pidPtr
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* is filled with the process id of the child
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* process. */
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{
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int result, type, applType, createFlags;
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Tcl_DString cmdLine;
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STARTUPINFO startInfo;
|
||
PROCESS_INFORMATION procInfo;
|
||
SECURITY_ATTRIBUTES secAtts;
|
||
HANDLE hProcess, h, inputHandle, outputHandle, errorHandle;
|
||
char execPath[MAX_PATH];
|
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char *originalName;
|
||
OSVERSIONINFO os;
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||
|
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os.dwOSVersionInfoSize = sizeof(os);
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GetVersionEx(&os);
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||
|
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applType = ApplicationType(interp, argv[0], execPath);
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||
if (applType == APPL_NONE) {
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||
return TCL_ERROR;
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||
}
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originalName = argv[0];
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argv[0] = execPath;
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||
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result = TCL_ERROR;
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Tcl_DStringInit(&cmdLine);
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||
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if (os.dwPlatformId == VER_PLATFORM_WIN32s) {
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/*
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* Under Win32s, there are no pipes. In order to simulate pipe
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* behavior, the child processes are run synchronously and their
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* I/O is redirected from/to temporary files before the next
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* stage of the pipeline is started.
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*/
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||
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Tcl_DString inputTempFile, outputTempFile;
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ClientData clientData;
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TclWinPipe *pipePtr;
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DWORD args[4];
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void *trans[5];
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DWORD status;
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MSG msg;
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||
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BuildCommandLine(argc, argv, &cmdLine);
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ZeroMemory(&startInfo, sizeof(startInfo));
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startInfo.cb = sizeof(startInfo);
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||
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Tcl_DStringInit(&inputTempFile);
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Tcl_DStringInit(&outputTempFile);
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outputHandle = INVALID_HANDLE_VALUE;
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if (inputFileName == NULL) {
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if (inputFile != NULL) {
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||
clientData = Tcl_GetFileInfo(inputFile, &type);
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if (type == TCL_WIN_FILE) {
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h = INVALID_HANDLE_VALUE;
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inputFileName = MakeTempFile(&inputTempFile);
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if (inputFileName != NULL) {
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h = CreateFile(inputFileName, GENERIC_WRITE, 0,
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NULL, CREATE_ALWAYS, 0, NULL);
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}
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if (h == INVALID_HANDLE_VALUE) {
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Tcl_AppendResult(interp, "couldn't duplicate input handle: ",
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Tcl_PosixError(interp), (char *) NULL);
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goto end32s;
|
||
}
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CopyFileByHandles(h, (HANDLE) clientData);
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CloseHandle(h);
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} else if (type == TCL_WIN32S_PIPE) {
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pipePtr = (TclWinPipe *) clientData;
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inputFileName = pipePtr->fileName;
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}
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||
}
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if (inputFileName == NULL) {
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inputFileName = "nul";
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}
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}
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if (outputFileName == NULL) {
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if (outputFile != NULL) {
|
||
clientData = Tcl_GetFileInfo(outputFile, &type);
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if ((type >= TCL_WIN_PIPE) && (type <= TCL_WIN_CONSOLE)) {
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outputFileName = MakeTempFile(&outputTempFile);
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if (outputFileName == NULL) {
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Tcl_AppendResult(interp, "couldn't duplicate output handle: ",
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Tcl_PosixError(interp), (char *) NULL);
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goto end32s;
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||
}
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outputHandle = (HANDLE) clientData;
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} else if (type == TCL_WIN32S_PIPE) {
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pipePtr = (TclWinPipe *) clientData;
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outputFileName = pipePtr->fileName;
|
||
}
|
||
}
|
||
if (outputFileName == NULL) {
|
||
outputFileName = "nul";
|
||
}
|
||
}
|
||
|
||
if (applType == APPL_DOS) {
|
||
args[0] = (DWORD) Tcl_DStringValue(&cmdLine);
|
||
args[1] = (DWORD) inputFileName;
|
||
args[2] = (DWORD) outputFileName;
|
||
trans[0] = &args[0];
|
||
trans[1] = &args[1];
|
||
trans[2] = &args[2];
|
||
trans[3] = NULL;
|
||
if (TclSynchSpawn(args, 0, trans, pidPtr) != 0) {
|
||
result = TCL_OK;
|
||
}
|
||
} else if (applType == APPL_WIN3X) {
|
||
args[0] = (DWORD) Tcl_DStringValue(&cmdLine);
|
||
trans[0] = &args[0];
|
||
trans[1] = NULL;
|
||
if (TclSynchSpawn(args, 1, trans, pidPtr) != 0) {
|
||
result = TCL_OK;
|
||
}
|
||
} else {
|
||
if (CreateProcess(NULL, Tcl_DStringValue(&cmdLine), NULL, NULL,
|
||
FALSE, DETACHED_PROCESS, NULL, NULL, &startInfo,
|
||
&procInfo) != 0) {
|
||
CloseHandle(procInfo.hThread);
|
||
while (1) {
|
||
if (GetExitCodeProcess(procInfo.hProcess, &status) == FALSE) {
|
||
break;
|
||
}
|
||
if (status != STILL_ACTIVE) {
|
||
break;
|
||
}
|
||
if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE) == TRUE) {
|
||
TranslateMessage(&msg);
|
||
DispatchMessage(&msg);
|
||
}
|
||
}
|
||
*pidPtr = (int) procInfo.dwProcessId;
|
||
if (*pidPtr != 0) {
|
||
ProcInfo *procPtr = (ProcInfo *)ckalloc(sizeof(ProcInfo));
|
||
procPtr->hProcess = procInfo.hProcess;
|
||
procPtr->dwProcessId = procInfo.dwProcessId;
|
||
procPtr->nextPtr = procList;
|
||
procList = procPtr;
|
||
}
|
||
result = TCL_OK;
|
||
}
|
||
}
|
||
if (result != TCL_OK) {
|
||
TclWinConvertError(GetLastError());
|
||
Tcl_AppendResult(interp, "couldn't execute \"", originalName,
|
||
"\": ", Tcl_PosixError(interp), (char *) NULL);
|
||
}
|
||
|
||
end32s:
|
||
if (outputHandle != INVALID_HANDLE_VALUE) {
|
||
/*
|
||
* Now copy stuff from temp file to actual output handle. Don't
|
||
* close outputHandle because it is associated with the output
|
||
* file owned by the caller.
|
||
*/
|
||
|
||
h = CreateFile(outputFileName, GENERIC_READ, 0, NULL, OPEN_ALWAYS,
|
||
0, NULL);
|
||
if (h != INVALID_HANDLE_VALUE) {
|
||
CopyFileByHandles(outputHandle, h);
|
||
}
|
||
CloseHandle(h);
|
||
}
|
||
|
||
if (inputFileName == Tcl_DStringValue(&inputTempFile)) {
|
||
DeleteFile(inputFileName);
|
||
}
|
||
if (outputFileName == Tcl_DStringValue(&outputTempFile)) {
|
||
DeleteFile(outputFileName);
|
||
}
|
||
|
||
Tcl_DStringFree(&inputTempFile);
|
||
Tcl_DStringFree(&outputTempFile);
|
||
Tcl_DStringFree(&cmdLine);
|
||
return result;
|
||
}
|
||
hProcess = GetCurrentProcess();
|
||
|
||
/*
|
||
* STARTF_USESTDHANDLES must be used to pass handles to child process.
|
||
* Using SetStdHandle() and/or dup2() only works when a console mode
|
||
* parent process is spawning an attached console mode child process.
|
||
*/
|
||
|
||
ZeroMemory(&startInfo, sizeof(startInfo));
|
||
startInfo.cb = sizeof(startInfo);
|
||
startInfo.dwFlags = STARTF_USESTDHANDLES;
|
||
startInfo.hStdInput = INVALID_HANDLE_VALUE;
|
||
startInfo.hStdOutput= INVALID_HANDLE_VALUE;
|
||
startInfo.hStdError = INVALID_HANDLE_VALUE;
|
||
|
||
secAtts.nLength = sizeof(SECURITY_ATTRIBUTES);
|
||
secAtts.lpSecurityDescriptor = NULL;
|
||
secAtts.bInheritHandle = TRUE;
|
||
|
||
/*
|
||
* We have to check the type of each file, since we cannot duplicate
|
||
* some file types.
|
||
*/
|
||
|
||
inputHandle = INVALID_HANDLE_VALUE;
|
||
if (inputFile != NULL) {
|
||
h = (HANDLE) Tcl_GetFileInfo(inputFile, &type);
|
||
if ((type >= TCL_WIN_PIPE) && (type <= TCL_WIN_CONSOLE)) {
|
||
inputHandle = h;
|
||
}
|
||
}
|
||
outputHandle = INVALID_HANDLE_VALUE;
|
||
if (outputFile != NULL) {
|
||
h = (HANDLE) Tcl_GetFileInfo(outputFile, &type);
|
||
if ((type >= TCL_WIN_PIPE) && (type <= TCL_WIN_CONSOLE)) {
|
||
outputHandle = h;
|
||
}
|
||
}
|
||
errorHandle = INVALID_HANDLE_VALUE;
|
||
if (errorFile != NULL) {
|
||
h = (HANDLE) Tcl_GetFileInfo(errorFile, &type);
|
||
if ((type >= TCL_WIN_PIPE) && (type <= TCL_WIN_CONSOLE)) {
|
||
errorHandle = h;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Duplicate all the handles which will be passed off as stdin, stdout
|
||
* and stderr of the child process. The duplicate handles are set to
|
||
* be inheritable, so the child process can use them.
|
||
*/
|
||
|
||
if (inputHandle == INVALID_HANDLE_VALUE) {
|
||
/*
|
||
* If handle was not set, stdin should return immediate EOF.
|
||
* Under Windows95, some applications (both 16 and 32 bit!)
|
||
* cannot read from the NUL device; they read from console
|
||
* instead. When running tk, this is fatal because the child
|
||
* process would hang forever waiting for EOF from the unmapped
|
||
* console window used by the helper application.
|
||
*
|
||
* Fortunately, the helper application detects a closed pipe
|
||
* as an immediate EOF and can pass that information to the
|
||
* child process.
|
||
*/
|
||
|
||
if (CreatePipe(&startInfo.hStdInput, &h, &secAtts, 0) != FALSE) {
|
||
CloseHandle(h);
|
||
}
|
||
} else {
|
||
DuplicateHandle(hProcess, inputHandle, hProcess, &startInfo.hStdInput,
|
||
0, TRUE, DUPLICATE_SAME_ACCESS);
|
||
}
|
||
if (startInfo.hStdInput == INVALID_HANDLE_VALUE) {
|
||
TclWinConvertError(GetLastError());
|
||
Tcl_AppendResult(interp, "couldn't duplicate input handle: ",
|
||
Tcl_PosixError(interp), (char *) NULL);
|
||
goto end;
|
||
}
|
||
|
||
if (outputHandle == INVALID_HANDLE_VALUE) {
|
||
/*
|
||
* If handle was not set, output should be sent to an infinitely
|
||
* deep sink. Under Windows 95, some 16 bit applications cannot
|
||
* have stdout redirected to NUL; they send their output to
|
||
* the console instead. Some applications, like "more" or "dir /p",
|
||
* when outputting multiple pages to the console, also then try and
|
||
* read from the console to go the next page. When running tk, this
|
||
* is fatal because the child process would hang forever waiting
|
||
* for input from the unmapped console window used by the helper
|
||
* application.
|
||
*
|
||
* Fortunately, the helper application will detect a closed pipe
|
||
* as a sink.
|
||
*/
|
||
|
||
if ((os.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)
|
||
&& (applType == APPL_DOS)) {
|
||
if (CreatePipe(&h, &startInfo.hStdOutput, &secAtts, 0) != FALSE) {
|
||
CloseHandle(h);
|
||
}
|
||
} else {
|
||
startInfo.hStdOutput = CreateFile("NUL:", GENERIC_WRITE, 0,
|
||
&secAtts, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
|
||
}
|
||
} else {
|
||
DuplicateHandle(hProcess, outputHandle, hProcess, &startInfo.hStdOutput,
|
||
0, TRUE, DUPLICATE_SAME_ACCESS);
|
||
}
|
||
if (startInfo.hStdOutput == INVALID_HANDLE_VALUE) {
|
||
TclWinConvertError(GetLastError());
|
||
Tcl_AppendResult(interp, "couldn't duplicate output handle: ",
|
||
Tcl_PosixError(interp), (char *) NULL);
|
||
goto end;
|
||
}
|
||
|
||
if (errorHandle == INVALID_HANDLE_VALUE) {
|
||
/*
|
||
* If handle was not set, errors should be sent to an infinitely
|
||
* deep sink.
|
||
*/
|
||
|
||
startInfo.hStdError = CreateFile("NUL:", GENERIC_WRITE, 0,
|
||
&secAtts, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
|
||
} else {
|
||
DuplicateHandle(hProcess, errorHandle, hProcess, &startInfo.hStdError,
|
||
0, TRUE, DUPLICATE_SAME_ACCESS);
|
||
}
|
||
if (startInfo.hStdError == INVALID_HANDLE_VALUE) {
|
||
TclWinConvertError(GetLastError());
|
||
Tcl_AppendResult(interp, "couldn't duplicate error handle: ",
|
||
Tcl_PosixError(interp), (char *) NULL);
|
||
goto end;
|
||
}
|
||
/*
|
||
* If we do not have a console window, then we must run DOS and
|
||
* WIN32 console mode applications as detached processes. This tells
|
||
* the loader that the child application should not inherit the
|
||
* console, and that it should not create a new console window for
|
||
* the child application. The child application should get its stdio
|
||
* from the redirection handles provided by this application, and run
|
||
* in the background.
|
||
*
|
||
* If we are starting a GUI process, they don't automatically get a
|
||
* console, so it doesn't matter if they are started as foreground or
|
||
* detached processes. The GUI window will still pop up to the
|
||
* foreground.
|
||
*/
|
||
|
||
if (os.dwPlatformId == VER_PLATFORM_WIN32_NT) {
|
||
if (HasConsole()) {
|
||
createFlags = 0;
|
||
} else if (applType == APPL_DOS) {
|
||
/*
|
||
* Under NT, 16-bit DOS applications will not run unless they
|
||
* can be attached to a console. If we are running without a
|
||
* console, run the 16-bit program as an normal process inside
|
||
* of a hidden console application, and then run that hidden
|
||
* console as a detached process.
|
||
*/
|
||
|
||
startInfo.wShowWindow = SW_HIDE;
|
||
startInfo.dwFlags |= STARTF_USESHOWWINDOW;
|
||
createFlags = CREATE_NEW_CONSOLE;
|
||
Tcl_DStringAppend(&cmdLine, "cmd.exe /c ", -1);
|
||
} else {
|
||
createFlags = DETACHED_PROCESS;
|
||
}
|
||
} else {
|
||
if (HasConsole()) {
|
||
createFlags = 0;
|
||
} else {
|
||
createFlags = DETACHED_PROCESS;
|
||
}
|
||
|
||
if (applType == APPL_DOS) {
|
||
/*
|
||
* Under Windows 95, 16-bit DOS applications do not work well
|
||
* with pipes:
|
||
*
|
||
* 1. EOF on a pipe between a detached 16-bit DOS application
|
||
* and another application is not seen at the other
|
||
* end of the pipe, so the listening process blocks forever on
|
||
* reads. This inablity to detect EOF happens when either a
|
||
* 16-bit app or the 32-bit app is the listener.
|
||
*
|
||
* 2. If a 16-bit DOS application (detached or not) blocks when
|
||
* writing to a pipe, it will never wake up again, and it
|
||
* eventually brings the whole system down around it.
|
||
*
|
||
* The 16-bit application is run as a normal process inside
|
||
* of a hidden helper console app, and this helper may be run
|
||
* as a detached process. If any of the stdio handles is
|
||
* a pipe, the helper application accumulates information
|
||
* into temp files and forwards it to or from the DOS
|
||
* application as appropriate. This means that DOS apps
|
||
* must receive EOF from a stdin pipe before they will actually
|
||
* begin, and must finish generating stdout or stderr before
|
||
* the data will be sent to the next stage of the pipe.
|
||
*
|
||
* The helper app should be located in the same directory as
|
||
* the tcl dll.
|
||
*/
|
||
|
||
if (createFlags != 0) {
|
||
startInfo.wShowWindow = SW_HIDE;
|
||
startInfo.dwFlags |= STARTF_USESHOWWINDOW;
|
||
createFlags = CREATE_NEW_CONSOLE;
|
||
}
|
||
Tcl_DStringAppend(&cmdLine, "tclpip" STRINGIFY(TCL_MAJOR_VERSION)
|
||
STRINGIFY(TCL_MINOR_VERSION) ".dll ", -1);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* cmdLine gets the full command line used to invoke the executable,
|
||
* including the name of the executable itself. The command line
|
||
* arguments in argv[] are stored in cmdLine separated by spaces.
|
||
* Special characters in individual arguments from argv[] must be
|
||
* quoted when being stored in cmdLine.
|
||
*
|
||
* When calling any application, bear in mind that arguments that
|
||
* specify a path name are not converted. If an argument contains
|
||
* forward slashes as path separators, it may or may not be
|
||
* recognized as a path name, depending on the program. In general,
|
||
* most applications accept forward slashes only as option
|
||
* delimiters and backslashes only as paths.
|
||
*
|
||
* Additionally, when calling a 16-bit dos or windows application,
|
||
* all path names must use the short, cryptic, path format (e.g.,
|
||
* using ab~1.def instead of "a b.default").
|
||
*/
|
||
|
||
BuildCommandLine(argc, argv, &cmdLine);
|
||
|
||
if (!CreateProcess(NULL, Tcl_DStringValue(&cmdLine), NULL, NULL, TRUE,
|
||
createFlags, NULL, NULL, &startInfo, &procInfo)) {
|
||
TclWinConvertError(GetLastError());
|
||
Tcl_AppendResult(interp, "couldn't execute \"", originalName,
|
||
"\": ", Tcl_PosixError(interp), (char *) NULL);
|
||
goto end;
|
||
}
|
||
|
||
if (applType == APPL_DOS) {
|
||
WaitForSingleObject(hProcess, 50);
|
||
}
|
||
|
||
/*
|
||
* "When an application spawns a process repeatedly, a new thread
|
||
* instance will be created for each process but the previous
|
||
* instances may not be cleaned up. This results in a significant
|
||
* virtual memory loss each time the process is spawned. If there
|
||
* is a WaitForInputIdle() call between CreateProcess() and
|
||
* CloseHandle(), the problem does not occur." PSS ID Number: Q124121
|
||
*/
|
||
|
||
WaitForInputIdle(procInfo.hProcess, 5000);
|
||
CloseHandle(procInfo.hThread);
|
||
|
||
*pidPtr = (int) procInfo.dwProcessId;
|
||
if (*pidPtr != 0) {
|
||
ProcInfo *procPtr = (ProcInfo *)ckalloc(sizeof(ProcInfo));
|
||
procPtr->hProcess = procInfo.hProcess;
|
||
procPtr->dwProcessId = procInfo.dwProcessId;
|
||
procPtr->nextPtr = procList;
|
||
procList = procPtr;
|
||
}
|
||
result = TCL_OK;
|
||
|
||
end:
|
||
Tcl_DStringFree(&cmdLine);
|
||
if (startInfo.hStdInput != INVALID_HANDLE_VALUE) {
|
||
CloseHandle(startInfo.hStdInput);
|
||
}
|
||
if (startInfo.hStdOutput != INVALID_HANDLE_VALUE) {
|
||
CloseHandle(startInfo.hStdOutput);
|
||
}
|
||
if (startInfo.hStdError != INVALID_HANDLE_VALUE) {
|
||
CloseHandle(startInfo.hStdError);
|
||
}
|
||
return result;
|
||
}
|
||
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* HasConsole --
|
||
*
|
||
* Determines whether the current application is attached to a
|
||
* console.
|
||
*
|
||
* Results:
|
||
* Returns TRUE if this application has a console, else FALSE.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static BOOL
|
||
HasConsole()
|
||
{
|
||
HANDLE handle = CreateFile("CONOUT$", GENERIC_WRITE, FILE_SHARE_WRITE,
|
||
NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
|
||
|
||
if (handle != INVALID_HANDLE_VALUE) {
|
||
CloseHandle(handle);
|
||
return TRUE;
|
||
} else {
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* TclCreatePipe --
|
||
*
|
||
* Creates an anonymous pipe. Under Win32s, creates a temp file
|
||
* that is used to simulate a pipe.
|
||
*
|
||
* Results:
|
||
* Returns 1 on success, 0 on failure.
|
||
*
|
||
* Side effects:
|
||
* Creates a pipe.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
int
|
||
TclCreatePipe(readPipe, writePipe)
|
||
Tcl_File *readPipe; /* Location to store file handle for
|
||
* read side of pipe. */
|
||
Tcl_File *writePipe; /* Location to store file handle for
|
||
* write side of pipe. */
|
||
{
|
||
HANDLE readHandle, writeHandle;
|
||
OSVERSIONINFO os;
|
||
|
||
if (CreatePipe(&readHandle, &writeHandle, NULL, 0) != 0) {
|
||
*readPipe = Tcl_GetFile((ClientData) readHandle, TCL_WIN_FILE);
|
||
*writePipe = Tcl_GetFile((ClientData) writeHandle, TCL_WIN_FILE);
|
||
return 1;
|
||
}
|
||
|
||
os.dwOSVersionInfoSize = sizeof(os);
|
||
GetVersionEx(&os);
|
||
|
||
if (os.dwPlatformId == VER_PLATFORM_WIN32s) {
|
||
TclWinPipe *readPipePtr, *writePipePtr;
|
||
char buf[MAX_PATH];
|
||
|
||
if ((GetTempPath(MAX_PATH, buf) != 0)
|
||
&& (GetTempFileName(buf, "TCL", 0, buf) != 0)) {
|
||
|
||
readPipePtr = (TclWinPipe *) ckalloc(sizeof(TclWinPipe));
|
||
writePipePtr = (TclWinPipe *) ckalloc(sizeof(TclWinPipe));
|
||
|
||
readPipePtr->otherPtr = writePipePtr;
|
||
readPipePtr->fileName = strcpy(ckalloc(strlen(buf) + 1), buf);
|
||
readPipePtr->fileHandle = INVALID_HANDLE_VALUE;
|
||
writePipePtr->otherPtr = readPipePtr;
|
||
writePipePtr->fileName = readPipePtr->fileName;
|
||
writePipePtr->fileHandle = INVALID_HANDLE_VALUE;
|
||
*readPipe = Tcl_GetFile((ClientData) readPipePtr, TCL_WIN32S_PIPE);
|
||
*writePipe = Tcl_GetFile((ClientData) writePipePtr, TCL_WIN32S_PIPE);
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
TclWinConvertError(GetLastError());
|
||
return 0;
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------------
|
||
*
|
||
* ApplicationType --
|
||
*
|
||
* Search for the specified program and identify if it refers to a DOS,
|
||
* Windows 3.X, or Win32 program. Used to determine how to invoke
|
||
* a program, or if it can even be invoked.
|
||
*
|
||
* It is possible to almost positively identify DOS and Windows
|
||
* applications that contain the appropriate magic numbers. However,
|
||
* DOS .com files do not seem to contain a magic number; if the program
|
||
* name ends with .com and could not be identified as a Windows .com
|
||
* file, it will be assumed to be a DOS application, even if it was
|
||
* just random data. If the program name does not end with .com, no
|
||
* such assumption is made.
|
||
*
|
||
* The Win32 procedure GetBinaryType incorrectly identifies any
|
||
* junk file that ends with .exe as a dos executable and some
|
||
* executables that don't end with .exe as not executable. Plus it
|
||
* doesn't exist under win95, so I won't feel bad about reimplementing
|
||
* functionality.
|
||
*
|
||
* Results:
|
||
* The return value is one of APPL_DOS, APPL_WIN3X, or APPL_WIN32
|
||
* if the filename referred to the corresponding application type.
|
||
* If the file name could not be found or did not refer to any known
|
||
* application type, APPL_NONE is returned and an error message is
|
||
* left in interp. .bat files are identified as APPL_DOS.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
ApplicationType(interp, originalName, fullPath)
|
||
Tcl_Interp *interp; /* Interp, for error message. */
|
||
const char *originalName; /* Name of the application to find. */
|
||
char fullPath[MAX_PATH]; /* Filled with complete path to
|
||
* application. */
|
||
{
|
||
int applType, i;
|
||
HANDLE hFile;
|
||
char *ext;
|
||
char buf[2];
|
||
DWORD read;
|
||
IMAGE_DOS_HEADER header;
|
||
static char extensions[][5] = {"", ".com", ".exe", ".bat"};
|
||
|
||
/* Look for the program as an external program. First try the name
|
||
* as it is, then try adding .com, .exe, and .bat, in that order, to
|
||
* the name, looking for an executable.
|
||
*
|
||
* Using the raw SearchPath() procedure doesn't do quite what is
|
||
* necessary. If the name of the executable already contains a '.'
|
||
* character, it will not try appending the specified extension when
|
||
* searching (in other words, SearchPath will not find the program
|
||
* "a.b.exe" if the arguments specified "a.b" and ".exe").
|
||
* So, first look for the file as it is named. Then manually append
|
||
* the extensions, looking for a match.
|
||
*/
|
||
|
||
applType = APPL_NONE;
|
||
for (i = 0; i < (int) (sizeof(extensions) / sizeof(extensions[0])); i++) {
|
||
lstrcpyn(fullPath, originalName, MAX_PATH - 5);
|
||
lstrcat(fullPath, extensions[i]);
|
||
|
||
if (SearchPath(NULL, fullPath, NULL, MAX_PATH, fullPath, NULL) == 0) {
|
||
continue;
|
||
}
|
||
|
||
/*
|
||
* Ignore matches on directories or data files, return if identified
|
||
* a known type.
|
||
*/
|
||
|
||
if (GetFileAttributes(fullPath) & FILE_ATTRIBUTE_DIRECTORY) {
|
||
continue;
|
||
}
|
||
|
||
ext = strrchr(fullPath, '.');
|
||
if ((ext != NULL) && (strcmpi(ext, ".bat") == 0)) {
|
||
applType = APPL_DOS;
|
||
break;
|
||
}
|
||
|
||
hFile = CreateFile(fullPath, GENERIC_READ, FILE_SHARE_READ, NULL,
|
||
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
|
||
if (hFile == INVALID_HANDLE_VALUE) {
|
||
continue;
|
||
}
|
||
|
||
header.e_magic = 0;
|
||
ReadFile(hFile, (void *) &header, sizeof(header), &read, NULL);
|
||
if (header.e_magic != IMAGE_DOS_SIGNATURE) {
|
||
/*
|
||
* Doesn't have the magic number for relocatable executables. If
|
||
* filename ends with .com, assume it's a DOS application anyhow.
|
||
* Note that we didn't make this assumption at first, because some
|
||
* supposed .com files are really 32-bit executables with all the
|
||
* magic numbers and everything.
|
||
*/
|
||
|
||
CloseHandle(hFile);
|
||
if ((ext != NULL) && (strcmpi(ext, ".com") == 0)) {
|
||
applType = APPL_DOS;
|
||
break;
|
||
}
|
||
continue;
|
||
}
|
||
if (header.e_lfarlc != sizeof(header)) {
|
||
/*
|
||
* All Windows 3.X and Win32 and some DOS programs have this value
|
||
* set here. If it doesn't, assume that since it already had the
|
||
* other magic number it was a DOS application.
|
||
*/
|
||
|
||
CloseHandle(hFile);
|
||
applType = APPL_DOS;
|
||
break;
|
||
}
|
||
|
||
/*
|
||
* The DWORD at header.e_lfanew points to yet another magic number.
|
||
*/
|
||
|
||
buf[0] = '\0';
|
||
SetFilePointer(hFile, header.e_lfanew, NULL, FILE_BEGIN);
|
||
ReadFile(hFile, (void *) buf, 2, &read, NULL);
|
||
CloseHandle(hFile);
|
||
|
||
if ((buf[0] == 'L') && (buf[1] == 'E')) {
|
||
applType = APPL_DOS;
|
||
} else if ((buf[0] == 'N') && (buf[1] == 'E')) {
|
||
applType = APPL_WIN3X;
|
||
} else if ((buf[0] == 'P') && (buf[1] == 'E')) {
|
||
applType = APPL_WIN32;
|
||
} else {
|
||
continue;
|
||
}
|
||
break;
|
||
}
|
||
|
||
if (applType == APPL_NONE) {
|
||
TclWinConvertError(GetLastError());
|
||
Tcl_AppendResult(interp, "couldn't execute \"", originalName,
|
||
"\": ", Tcl_PosixError(interp), (char *) NULL);
|
||
return APPL_NONE;
|
||
}
|
||
|
||
if ((applType == APPL_DOS) || (applType == APPL_WIN3X)) {
|
||
/*
|
||
* Replace long path name of executable with short path name for
|
||
* 16-bit applications. Otherwise the application may not be able
|
||
* to correctly parse its own command line to separate off the
|
||
* application name from the arguments.
|
||
*/
|
||
|
||
GetShortPathName(fullPath, fullPath, MAX_PATH);
|
||
}
|
||
return applType;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* BuildCommandLine --
|
||
*
|
||
* The command line arguments are stored in linePtr separated
|
||
* by spaces, in a form that CreateProcess() understands. Special
|
||
* characters in individual arguments from argv[] must be quoted
|
||
* when being stored in cmdLine.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
BuildCommandLine(argc, argv, linePtr)
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
Tcl_DString *linePtr; /* Initialized Tcl_DString that receives the
|
||
* command line. */
|
||
{
|
||
char *start, *special;
|
||
int quote, i;
|
||
|
||
for (i = 0; i < argc; i++) {
|
||
if (i > 0) {
|
||
Tcl_DStringAppend(linePtr, " ", 1);
|
||
}
|
||
|
||
quote = 0;
|
||
for (start = argv[i]; *start != '\0'; start++) {
|
||
if (isspace(*start)) {
|
||
quote = 1;
|
||
Tcl_DStringAppend(linePtr, "\"", 1);
|
||
break;
|
||
}
|
||
}
|
||
|
||
start = argv[i];
|
||
for (special = argv[i]; ; ) {
|
||
if ((*special == '\\') &&
|
||
(special[1] == '\\' || special[1] == '"')) {
|
||
Tcl_DStringAppend(linePtr, start, special - start);
|
||
start = special;
|
||
while (1) {
|
||
special++;
|
||
if (*special == '"') {
|
||
/*
|
||
* N backslashes followed a quote -> insert
|
||
* N * 2 + 1 backslashes then a quote.
|
||
*/
|
||
|
||
Tcl_DStringAppend(linePtr, start, special - start);
|
||
break;
|
||
}
|
||
if (*special != '\\') {
|
||
break;
|
||
}
|
||
}
|
||
Tcl_DStringAppend(linePtr, start, special - start);
|
||
start = special;
|
||
}
|
||
if (*special == '"') {
|
||
Tcl_DStringAppend(linePtr, start, special - start);
|
||
Tcl_DStringAppend(linePtr, "\\\"", 2);
|
||
start = special + 1;
|
||
}
|
||
if (*special == '\0') {
|
||
break;
|
||
}
|
||
special++;
|
||
}
|
||
Tcl_DStringAppend(linePtr, start, special - start);
|
||
if (quote) {
|
||
Tcl_DStringAppend(linePtr, "\"", 1);
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* MakeTempFile --
|
||
*
|
||
* Helper function for TclpCreateProcess under Win32s. Makes a
|
||
* temporary file that _won't_ go away automatically when it's file
|
||
* handle is closed. Used for simulated pipes, which are written
|
||
* in one pass and reopened and read in the next pass.
|
||
*
|
||
* Results:
|
||
* namePtr is filled with the name of the temporary file.
|
||
*
|
||
* Side effects:
|
||
* A temporary file with the name specified by namePtr is created.
|
||
* The caller is responsible for deleting this temporary file.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static char *
|
||
MakeTempFile(namePtr)
|
||
Tcl_DString *namePtr; /* Initialized Tcl_DString that is filled
|
||
* with the name of the temporary file that
|
||
* was created. */
|
||
{
|
||
char name[MAX_PATH];
|
||
|
||
if ((GetTempPath(MAX_PATH, name) == 0)
|
||
|| (GetTempFileName(name, "TCL", 0, name) == 0)) {
|
||
return NULL;
|
||
}
|
||
|
||
Tcl_DStringAppend(namePtr, name, -1);
|
||
return Tcl_DStringValue(namePtr);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* CopyFileByHandles --
|
||
*
|
||
* Helper function used by TclpCreateProcess under Win32s. Copies
|
||
* what remains of source file to destination file; source file
|
||
* pointer need not be positioned at the beginning of the file if
|
||
* all of source file is not desired, but data is copied up to end
|
||
* of source file.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
CopyFileByHandles(dst, src)
|
||
HANDLE dst; /* Destination file. */
|
||
HANDLE src; /* Source file. */
|
||
{
|
||
char buf[8192];
|
||
DWORD dwRead, dwWrite;
|
||
|
||
while (ReadFile(src, buf, sizeof(buf), &dwRead, NULL) != FALSE) {
|
||
if (dwRead == 0) {
|
||
break;
|
||
}
|
||
if (WriteFile(dst, buf, dwRead, &dwWrite, NULL) == FALSE) {
|
||
break;
|
||
}
|
||
}
|
||
}
|