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/*-
* Copyright (c) 2009-2012 Michihiro NAKAJIMA
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "archive_platform.h"
#if defined(_WIN32) && !defined(__CYGWIN__)
#include "archive_cmdline_private.h"
#include "archive_string.h"
#include "filter_fork.h"
/* There are some editions of Windows ("nano server," for example) that
* do not host user32.dll. If we want to keep running on those editions,
* we need to delay-load WaitForInputIdle. */
static void *
la_GetFunctionUser32(const char *name)
{
static HINSTANCE lib;
static int set;
if (!set) {
set = 1;
lib = LoadLibrary(TEXT("user32.dll"));
}
if (lib == NULL) {
return NULL;
}
return (void *)GetProcAddress(lib, name);
}
static int
la_WaitForInputIdle(HANDLE hProcess, DWORD dwMilliseconds)
{
static DWORD (WINAPI *f)(HANDLE, DWORD);
static int set;
if (!set) {
set = 1;
f = la_GetFunctionUser32("WaitForInputIdle");
}
if (!f) {
/* An inability to wait for input idle is
* not _good_, but it is not catastrophic. */
return WAIT_FAILED;
}
return (*f)(hProcess, dwMilliseconds);
}
int
__archive_create_child(const char *cmd, int *child_stdin, int *child_stdout,
HANDLE *out_child)
{
HANDLE childStdout[2], childStdin[2],childStderr;
SECURITY_ATTRIBUTES secAtts;
STARTUPINFOA staInfo;
PROCESS_INFORMATION childInfo;
struct archive_string cmdline;
struct archive_string fullpath;
struct archive_cmdline *acmd;
char *arg0, *ext;
int i, l;
DWORD fl, fl_old;
HANDLE child;
childStdout[0] = childStdout[1] = INVALID_HANDLE_VALUE;
childStdin[0] = childStdin[1] = INVALID_HANDLE_VALUE;
childStderr = INVALID_HANDLE_VALUE;
archive_string_init(&cmdline);
archive_string_init(&fullpath);
acmd = __archive_cmdline_allocate();
if (acmd == NULL)
goto fail;
if (__archive_cmdline_parse(acmd, cmd) != ARCHIVE_OK)
goto fail;
/*
* Search the full path of 'path'.
* NOTE: This does not need if we give CreateProcessA 'path' as
* a part of the cmdline and give CreateProcessA NULL as first
* parameter, but I do not like that way.
*/
ext = strrchr(acmd->path, '.');
if (ext == NULL || strlen(ext) > 4)
/* 'path' does not have a proper extension, so we have to
* give SearchPath() ".exe" as the extension. */
ext = ".exe";
else
ext = NULL;/* 'path' has an extension. */
fl = MAX_PATH;
do {
if (archive_string_ensure(&fullpath, fl) == NULL)
goto fail;
fl_old = fl;
fl = SearchPathA(NULL, acmd->path, ext, fl, fullpath.s,
&arg0);
} while (fl != 0 && fl > fl_old);
if (fl == 0)
goto fail;
/*
* Make a command line.
*/
for (l = 0, i = 0; acmd->argv[i] != NULL; i++) {
if (i == 0)
continue;
l += (int)strlen(acmd->argv[i]) + 1;
}
if (archive_string_ensure(&cmdline, l + 1) == NULL)
goto fail;
for (i = 0; acmd->argv[i] != NULL; i++) {
if (i == 0) {
const char *p, *sp;
if ((p = strchr(acmd->argv[i], '/')) != NULL ||
(p = strchr(acmd->argv[i], '\\')) != NULL)
p++;
else
p = acmd->argv[i];
if ((sp = strchr(p, ' ')) != NULL)
archive_strappend_char(&cmdline, '"');
archive_strcat(&cmdline, p);
if (sp != NULL)
archive_strappend_char(&cmdline, '"');
} else {
archive_strappend_char(&cmdline, ' ');
archive_strcat(&cmdline, acmd->argv[i]);
}
}
if (i <= 1) {
const char *sp;
if ((sp = strchr(arg0, ' ')) != NULL)
archive_strappend_char(&cmdline, '"');
archive_strcat(&cmdline, arg0);
if (sp != NULL)
archive_strappend_char(&cmdline, '"');
}
secAtts.nLength = sizeof(SECURITY_ATTRIBUTES);
secAtts.bInheritHandle = TRUE;
secAtts.lpSecurityDescriptor = NULL;
if (CreatePipe(&childStdout[0], &childStdout[1], &secAtts, 0) == 0)
goto fail;
if (!SetHandleInformation(childStdout[0], HANDLE_FLAG_INHERIT, 0))
goto fail;
if (CreatePipe(&childStdin[0], &childStdin[1], &secAtts, 0) == 0)
goto fail;
if (!SetHandleInformation(childStdin[1], HANDLE_FLAG_INHERIT, 0))
goto fail;
if (DuplicateHandle(GetCurrentProcess(), GetStdHandle(STD_ERROR_HANDLE),
GetCurrentProcess(), &childStderr, 0, TRUE,
DUPLICATE_SAME_ACCESS) == 0)
goto fail;
memset(&staInfo, 0, sizeof(staInfo));
staInfo.cb = sizeof(staInfo);
staInfo.hStdError = childStderr;
staInfo.hStdOutput = childStdout[1];
staInfo.hStdInput = childStdin[0];
staInfo.wShowWindow = SW_HIDE;
staInfo.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
if (CreateProcessA(fullpath.s, cmdline.s, NULL, NULL, TRUE, 0,
NULL, NULL, &staInfo, &childInfo) == 0)
goto fail;
la_WaitForInputIdle(childInfo.hProcess, INFINITE);
CloseHandle(childInfo.hProcess);
CloseHandle(childInfo.hThread);
*child_stdout = _open_osfhandle((intptr_t)childStdout[0], _O_RDONLY);
*child_stdin = _open_osfhandle((intptr_t)childStdin[1], _O_WRONLY);
child = OpenProcess(PROCESS_QUERY_INFORMATION, FALSE,
childInfo.dwProcessId);
if (child == NULL) // INVALID_HANDLE_VALUE ?
goto fail;
*out_child = child;
CloseHandle(childStdout[1]);
CloseHandle(childStdin[0]);
archive_string_free(&cmdline);
archive_string_free(&fullpath);
__archive_cmdline_free(acmd);
return ARCHIVE_OK;
fail:
if (childStdout[0] != INVALID_HANDLE_VALUE)
CloseHandle(childStdout[0]);
if (childStdout[1] != INVALID_HANDLE_VALUE)
CloseHandle(childStdout[1]);
if (childStdin[0] != INVALID_HANDLE_VALUE)
CloseHandle(childStdin[0]);
if (childStdin[1] != INVALID_HANDLE_VALUE)
CloseHandle(childStdin[1]);
if (childStderr != INVALID_HANDLE_VALUE)
CloseHandle(childStderr);
archive_string_free(&cmdline);
archive_string_free(&fullpath);
__archive_cmdline_free(acmd);
return ARCHIVE_FAILED;
}
void
__archive_check_child(int in, int out)
{
(void)in; /* UNUSED */
(void)out; /* UNUSED */
Sleep(100);
}
#endif /* _WIN32 && !__CYGWIN__ */
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