mirror of
git://git.gnupg.org/gnupg.git
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822 lines
23 KiB
C
822 lines
23 KiB
C
/* exechelp-w32.c - Fork and exec helpers for W32.
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* Copyright (C) 2004, 2007, 2008, 2009,
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* 2010 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#if !defined(HAVE_W32_SYSTEM) || defined (HAVE_W32CE_SYSTEM)
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#error This code is only used on W32.
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <assert.h>
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#ifdef HAVE_SIGNAL_H
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# include <signal.h>
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#endif
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#include <unistd.h>
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#include <fcntl.h>
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#ifdef WITHOUT_NPTH /* Give the Makefile a chance to build without Pth. */
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#undef HAVE_NPTH
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#undef USE_NPTH
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#endif
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#ifdef USE_NPTH
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#include <npth.h>
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#endif
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#ifdef HAVE_STAT
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# include <sys/stat.h>
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#endif
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#include "util.h"
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#include "i18n.h"
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#include "sysutils.h"
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#include "exechelp.h"
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/* Define to 1 do enable debugging. */
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#define DEBUG_W32_SPAWN 1
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/* It seems Vista doesn't grok X_OK and so fails access() tests.
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Previous versions interpreted X_OK as F_OK anyway, so we'll just
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use F_OK directly. */
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#undef X_OK
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#define X_OK F_OK
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/* We assume that a HANDLE can be represented by an int which should
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be true for all i386 systems (HANDLE is defined as void *) and
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these are the only systems for which Windows is available. Further
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we assume that -1 denotes an invalid handle. */
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# define fd_to_handle(a) ((HANDLE)(a))
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# define handle_to_fd(a) ((int)(a))
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# define pid_to_handle(a) ((HANDLE)(a))
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# define handle_to_pid(a) ((int)(a))
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/* Return the maximum number of currently allowed open file
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descriptors. Only useful on POSIX systems but returns a value on
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other systems too. */
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int
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get_max_fds (void)
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{
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int max_fds = -1;
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#ifdef OPEN_MAX
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if (max_fds == -1)
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max_fds = OPEN_MAX;
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#endif
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if (max_fds == -1)
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max_fds = 256; /* Arbitrary limit. */
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return max_fds;
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}
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/* Under Windows this is a dummy function. */
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void
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close_all_fds (int first, int *except)
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{
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(void)first;
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(void)except;
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}
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/* Returns an array with all currently open file descriptors. The end
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of the array is marked by -1. The caller needs to release this
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array using the *standard free* and not with xfree. This allow the
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use of this fucntion right at startup even before libgcrypt has
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been initialized. Returns NULL on error and sets ERRNO
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accordingly. */
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int *
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get_all_open_fds (void)
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{
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int *array;
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size_t narray;
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int fd, max_fd, idx;
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#ifndef HAVE_STAT
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array = calloc (1, sizeof *array);
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if (array)
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array[0] = -1;
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#else /*HAVE_STAT*/
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struct stat statbuf;
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max_fd = get_max_fds ();
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narray = 32; /* If you change this change also t-exechelp.c. */
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array = calloc (narray, sizeof *array);
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if (!array)
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return NULL;
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/* Note: The list we return is ordered. */
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for (idx=0, fd=0; fd < max_fd; fd++)
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if (!(fstat (fd, &statbuf) == -1 && errno == EBADF))
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{
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if (idx+1 >= narray)
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{
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int *tmp;
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narray += (narray < 256)? 32:256;
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tmp = realloc (array, narray * sizeof *array);
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if (!tmp)
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{
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free (array);
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return NULL;
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}
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array = tmp;
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}
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array[idx++] = fd;
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}
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array[idx] = -1;
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#endif /*HAVE_STAT*/
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return array;
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}
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/* Helper function to build_w32_commandline. */
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static char *
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build_w32_commandline_copy (char *buffer, const char *string)
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{
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char *p = buffer;
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const char *s;
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if (!*string) /* Empty string. */
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p = stpcpy (p, "\"\"");
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else if (strpbrk (string, " \t\n\v\f\""))
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{
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/* Need to do some kind of quoting. */
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p = stpcpy (p, "\"");
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for (s=string; *s; s++)
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{
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*p++ = *s;
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if (*s == '\"')
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*p++ = *s;
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}
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*p++ = '\"';
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*p = 0;
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}
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else
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p = stpcpy (p, string);
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return p;
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}
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/* Build a command line for use with W32's CreateProcess. On success
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CMDLINE gets the address of a newly allocated string. */
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static gpg_error_t
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build_w32_commandline (const char *pgmname, const char * const *argv,
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char **cmdline)
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{
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int i, n;
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const char *s;
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char *buf, *p;
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*cmdline = NULL;
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n = 0;
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s = pgmname;
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n += strlen (s) + 1 + 2; /* (1 space, 2 quoting */
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for (; *s; s++)
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if (*s == '\"')
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n++; /* Need to double inner quotes. */
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for (i=0; (s=argv[i]); i++)
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{
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n += strlen (s) + 1 + 2; /* (1 space, 2 quoting */
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for (; *s; s++)
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if (*s == '\"')
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n++; /* Need to double inner quotes. */
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}
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n++;
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buf = p = xtrymalloc (n);
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if (!buf)
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return gpg_error_from_syserror ();
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p = build_w32_commandline_copy (p, pgmname);
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for (i=0; argv[i]; i++)
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{
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*p++ = ' ';
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p = build_w32_commandline_copy (p, argv[i]);
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}
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*cmdline= buf;
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return 0;
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}
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/* Create pipe where one end is inheritable: With an INHERIT_IDX of 0
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the read end is inheritable, with 1 the write end is inheritable. */
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static int
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create_inheritable_pipe (HANDLE filedes[2], int inherit_idx)
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{
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HANDLE r, w, h;
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SECURITY_ATTRIBUTES sec_attr;
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memset (&sec_attr, 0, sizeof sec_attr );
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sec_attr.nLength = sizeof sec_attr;
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sec_attr.bInheritHandle = FALSE;
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if (!CreatePipe (&r, &w, &sec_attr, 0))
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return -1;
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if (!DuplicateHandle (GetCurrentProcess(), inherit_idx? w : r,
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GetCurrentProcess(), &h, 0,
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TRUE, DUPLICATE_SAME_ACCESS ))
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{
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log_error ("DuplicateHandle failed: %s\n", w32_strerror (-1));
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CloseHandle (r);
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CloseHandle (w);
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return -1;
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}
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if (inherit_idx)
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{
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CloseHandle (w);
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w = h;
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}
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else
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{
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CloseHandle (r);
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r = h;
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}
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filedes[0] = r;
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filedes[1] = w;
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return 0;
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}
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static HANDLE
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w32_open_null (int for_write)
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{
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HANDLE hfile;
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hfile = CreateFileW (L"nul",
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for_write? GENERIC_WRITE : GENERIC_READ,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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NULL, OPEN_EXISTING, 0, NULL);
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if (hfile == INVALID_HANDLE_VALUE)
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log_debug ("can't open `nul': %s\n", w32_strerror (-1));
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return hfile;
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}
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static gpg_error_t
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do_create_pipe (int filedes[2], int inherit_idx)
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{
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gpg_error_t err = 0;
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HANDLE fds[2];
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filedes[0] = filedes[1] = -1;
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err = gpg_error (GPG_ERR_GENERAL);
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if (!create_inheritable_pipe (fds, inherit_idx))
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{
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filedes[0] = _open_osfhandle (handle_to_fd (fds[0]), 0);
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if (filedes[0] == -1)
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{
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log_error ("failed to translate osfhandle %p\n", fds[0]);
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CloseHandle (fds[1]);
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}
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else
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{
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filedes[1] = _open_osfhandle (handle_to_fd (fds[1]), 1);
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if (filedes[1] == -1)
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{
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log_error ("failed to translate osfhandle %p\n", fds[1]);
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close (filedes[0]);
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filedes[0] = -1;
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CloseHandle (fds[1]);
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}
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else
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err = 0;
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}
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}
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return err;
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}
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/* Portable function to create a pipe. Under Windows the write end is
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inheritable. */
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gpg_error_t
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gnupg_create_inbound_pipe (int filedes[2])
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{
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return do_create_pipe (filedes, 1);
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}
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/* Portable function to create a pipe. Under Windows the read end is
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inheritable. */
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gpg_error_t
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gnupg_create_outbound_pipe (int filedes[2])
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{
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return do_create_pipe (filedes, 0);
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}
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/* Fork and exec the PGMNAME, see exechelp.h for details. */
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gpg_error_t
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gnupg_spawn_process (const char *pgmname, const char *argv[],
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gpg_err_source_t errsource,
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void (*preexec)(void), unsigned int flags,
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estream_t infp,
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estream_t *r_outfp,
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estream_t *r_errfp,
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pid_t *pid)
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{
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gpg_error_t err;
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SECURITY_ATTRIBUTES sec_attr;
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PROCESS_INFORMATION pi =
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{
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NULL, /* Returns process handle. */
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0, /* Returns primary thread handle. */
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0, /* Returns pid. */
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0 /* Returns tid. */
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};
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STARTUPINFO si;
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int cr_flags;
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char *cmdline;
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HANDLE inhandle = INVALID_HANDLE_VALUE;
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HANDLE outpipe[2] = {INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE};
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HANDLE errpipe[2] = {INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE};
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estream_t outfp = NULL;
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estream_t errfp = NULL;
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HANDLE nullhd[3] = {INVALID_HANDLE_VALUE,
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INVALID_HANDLE_VALUE,
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INVALID_HANDLE_VALUE};
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int i;
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es_syshd_t syshd;
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if (r_outfp)
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*r_outfp = NULL;
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if (r_errfp)
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*r_errfp = NULL;
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*pid = (pid_t)(-1); /* Always required. */
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if (infp)
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{
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es_fflush (infp);
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es_rewind (infp);
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es_syshd (infp, &syshd);
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switch (syshd.type)
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{
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case ES_SYSHD_FD:
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inhandle = (HANDLE)_get_osfhandle (syshd.u.fd);
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break;
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case ES_SYSHD_SOCK:
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inhandle = (HANDLE)_get_osfhandle (syshd.u.sock);
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break;
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case ES_SYSHD_HANDLE:
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inhandle = syshd.u.handle;
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break;
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default:
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inhandle = INVALID_HANDLE_VALUE;
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break;
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}
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if (inhandle == INVALID_HANDLE_VALUE)
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return gpg_err_make (errsource, GPG_ERR_INV_VALUE);
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/* FIXME: In case we can't get a system handle (e.g. due to
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es_fopencookie we should create a piper and a feeder
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thread. */
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}
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if (r_outfp)
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{
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if (create_inheritable_pipe (outpipe, 1))
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{
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err = gpg_err_make (errsource, GPG_ERR_GENERAL);
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log_error (_("error creating a pipe: %s\n"), gpg_strerror (err));
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return err;
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}
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syshd.type = ES_SYSHD_HANDLE;
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syshd.u.handle = outpipe[0];
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outfp = es_sysopen (&syshd, "r");
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if (!outfp)
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{
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err = gpg_err_make (errsource, gpg_err_code_from_syserror ());
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log_error (_("error creating a stream for a pipe: %s\n"),
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gpg_strerror (err));
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CloseHandle (outpipe[0]);
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CloseHandle (outpipe[1]);
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outpipe[0] = outpipe[1] = INVALID_HANDLE_VALUE;
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return err;
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}
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}
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if (r_errfp)
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{
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if (create_inheritable_pipe (errpipe, 1))
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{
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err = gpg_err_make (errsource, GPG_ERR_GENERAL);
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log_error (_("error creating a pipe: %s\n"), gpg_strerror (err));
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return err;
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}
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syshd.type = ES_SYSHD_HANDLE;
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syshd.u.handle = errpipe[0];
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errfp = es_sysopen (&syshd, "r");
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if (!errfp)
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{
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err = gpg_err_make (errsource, gpg_err_code_from_syserror ());
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log_error (_("error creating a stream for a pipe: %s\n"),
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gpg_strerror (err));
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CloseHandle (errpipe[0]);
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CloseHandle (errpipe[1]);
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errpipe[0] = errpipe[1] = INVALID_HANDLE_VALUE;
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if (outfp)
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es_fclose (outfp);
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else if (outpipe[0] != INVALID_HANDLE_VALUE)
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CloseHandle (outpipe[0]);
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if (outpipe[1] != INVALID_HANDLE_VALUE)
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CloseHandle (outpipe[1]);
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return err;
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}
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}
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/* Prepare security attributes. */
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memset (&sec_attr, 0, sizeof sec_attr );
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sec_attr.nLength = sizeof sec_attr;
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sec_attr.bInheritHandle = FALSE;
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/* Build the command line. */
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err = build_w32_commandline (pgmname, argv, &cmdline);
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if (err)
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return err;
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if (inhandle != INVALID_HANDLE_VALUE)
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nullhd[0] = w32_open_null (0);
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if (outpipe[1] != INVALID_HANDLE_VALUE)
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nullhd[1] = w32_open_null (0);
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if (errpipe[1] != INVALID_HANDLE_VALUE)
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nullhd[2] = w32_open_null (0);
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/* Start the process. Note that we can't run the PREEXEC function
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because this might change our own environment. */
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(void)preexec;
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memset (&si, 0, sizeof si);
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si.cb = sizeof (si);
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si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
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si.wShowWindow = DEBUG_W32_SPAWN? SW_SHOW : SW_MINIMIZE;
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si.hStdInput = inhandle == INVALID_HANDLE_VALUE? nullhd[0] : inhandle;
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si.hStdOutput = outpipe[1] == INVALID_HANDLE_VALUE? nullhd[1] : outpipe[1];
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si.hStdError = errpipe[1] == INVALID_HANDLE_VALUE? nullhd[2] : errpipe[1];
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cr_flags = (CREATE_DEFAULT_ERROR_MODE
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| ((flags & 128)? DETACHED_PROCESS : 0)
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|
| GetPriorityClass (GetCurrentProcess ())
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| CREATE_SUSPENDED);
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|
/* log_debug ("CreateProcess, path=`%s' cmdline=`%s'\n", pgmname, cmdline); */
|
|
if (!CreateProcess (pgmname, /* Program to start. */
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|
cmdline, /* Command line arguments. */
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|
&sec_attr, /* Process security attributes. */
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|
&sec_attr, /* Thread security attributes. */
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TRUE, /* Inherit handles. */
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cr_flags, /* Creation flags. */
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NULL, /* Environment. */
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NULL, /* Use current drive/directory. */
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&si, /* Startup information. */
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&pi /* Returns process information. */
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))
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{
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log_error ("CreateProcess failed: %s\n", w32_strerror (-1));
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xfree (cmdline);
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if (outfp)
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es_fclose (outfp);
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else if (outpipe[0] != INVALID_HANDLE_VALUE)
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CloseHandle (outpipe[0]);
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if (outpipe[1] != INVALID_HANDLE_VALUE)
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|
CloseHandle (outpipe[1]);
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if (errfp)
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es_fclose (errfp);
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else if (errpipe[0] != INVALID_HANDLE_VALUE)
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CloseHandle (errpipe[0]);
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if (errpipe[1] != INVALID_HANDLE_VALUE)
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|
CloseHandle (errpipe[1]);
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return gpg_err_make (errsource, GPG_ERR_GENERAL);
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}
|
|
xfree (cmdline);
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|
cmdline = NULL;
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|
|
/* Close the inherited handles to /dev/null. */
|
|
for (i=0; i < DIM (nullhd); i++)
|
|
if (nullhd[i] != INVALID_HANDLE_VALUE)
|
|
CloseHandle (nullhd[i]);
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|
|
/* Close the inherited ends of the pipes. */
|
|
if (outpipe[1] != INVALID_HANDLE_VALUE)
|
|
CloseHandle (outpipe[1]);
|
|
if (errpipe[1] != INVALID_HANDLE_VALUE)
|
|
CloseHandle (errpipe[1]);
|
|
|
|
/* log_debug ("CreateProcess ready: hProcess=%p hThread=%p" */
|
|
/* " dwProcessID=%d dwThreadId=%d\n", */
|
|
/* pi.hProcess, pi.hThread, */
|
|
/* (int) pi.dwProcessId, (int) pi.dwThreadId); */
|
|
/* log_debug (" outfp=%p errfp=%p\n", outfp, errfp); */
|
|
|
|
/* Fixme: For unknown reasons AllowSetForegroundWindow returns an
|
|
invalid argument error if we pass it the correct processID. As a
|
|
workaround we use -1 (ASFW_ANY). */
|
|
if ( (flags & 64) )
|
|
gnupg_allow_set_foregound_window ((pid_t)(-1)/*pi.dwProcessId*/);
|
|
|
|
/* Process has been created suspended; resume it now. */
|
|
ResumeThread (pi.hThread);
|
|
CloseHandle (pi.hThread);
|
|
|
|
if (r_outfp)
|
|
*r_outfp = outfp;
|
|
if (r_errfp)
|
|
*r_errfp = errfp;
|
|
|
|
*pid = handle_to_pid (pi.hProcess);
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Simplified version of gnupg_spawn_process. This function forks and
|
|
then execs PGMNAME, while connecting INFD to stdin, OUTFD to stdout
|
|
and ERRFD to stderr (any of them may be -1 to connect them to
|
|
/dev/null). The arguments for the process are expected in the NULL
|
|
terminated array ARGV. The program name itself should not be
|
|
included there. Calling gnupg_wait_process is required.
|
|
|
|
Returns 0 on success or an error code. */
|
|
gpg_error_t
|
|
gnupg_spawn_process_fd (const char *pgmname, const char *argv[],
|
|
int infd, int outfd, int errfd, pid_t *pid)
|
|
{
|
|
gpg_error_t err;
|
|
SECURITY_ATTRIBUTES sec_attr;
|
|
PROCESS_INFORMATION pi = { NULL, 0, 0, 0 };
|
|
STARTUPINFO si;
|
|
char *cmdline;
|
|
int i;
|
|
HANDLE stdhd[3];
|
|
|
|
/* Setup return values. */
|
|
*pid = (pid_t)(-1);
|
|
|
|
/* Prepare security attributes. */
|
|
memset (&sec_attr, 0, sizeof sec_attr );
|
|
sec_attr.nLength = sizeof sec_attr;
|
|
sec_attr.bInheritHandle = FALSE;
|
|
|
|
/* Build the command line. */
|
|
err = build_w32_commandline (pgmname, argv, &cmdline);
|
|
if (err)
|
|
return err;
|
|
|
|
memset (&si, 0, sizeof si);
|
|
si.cb = sizeof (si);
|
|
si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
|
|
si.wShowWindow = DEBUG_W32_SPAWN? SW_SHOW : SW_MINIMIZE;
|
|
stdhd[0] = infd == -1? w32_open_null (0) : INVALID_HANDLE_VALUE;
|
|
stdhd[1] = outfd == -1? w32_open_null (1) : INVALID_HANDLE_VALUE;
|
|
stdhd[2] = errfd == -1? w32_open_null (1) : INVALID_HANDLE_VALUE;
|
|
si.hStdInput = infd == -1? stdhd[0] : (void*)_get_osfhandle (infd);
|
|
si.hStdOutput = outfd == -1? stdhd[1] : (void*)_get_osfhandle (outfd);
|
|
si.hStdError = errfd == -1? stdhd[2] : (void*)_get_osfhandle (errfd);
|
|
|
|
/* log_debug ("CreateProcess, path=`%s' cmdline=`%s'\n", pgmname, cmdline); */
|
|
if (!CreateProcess (pgmname, /* Program to start. */
|
|
cmdline, /* Command line arguments. */
|
|
&sec_attr, /* Process security attributes. */
|
|
&sec_attr, /* Thread security attributes. */
|
|
TRUE, /* Inherit handles. */
|
|
(CREATE_DEFAULT_ERROR_MODE
|
|
| GetPriorityClass (GetCurrentProcess ())
|
|
| CREATE_SUSPENDED | DETACHED_PROCESS),
|
|
NULL, /* Environment. */
|
|
NULL, /* Use current drive/directory. */
|
|
&si, /* Startup information. */
|
|
&pi /* Returns process information. */
|
|
))
|
|
{
|
|
log_error ("CreateProcess failed: %s\n", w32_strerror (-1));
|
|
err = gpg_error (GPG_ERR_GENERAL);
|
|
}
|
|
else
|
|
err = 0;
|
|
xfree (cmdline);
|
|
for (i=0; i < 3; i++)
|
|
if (stdhd[i] != INVALID_HANDLE_VALUE)
|
|
CloseHandle (stdhd[i]);
|
|
if (err)
|
|
return err;
|
|
|
|
/* log_debug ("CreateProcess ready: hProcess=%p hThread=%p" */
|
|
/* " dwProcessID=%d dwThreadId=%d\n", */
|
|
/* pi.hProcess, pi.hThread, */
|
|
/* (int) pi.dwProcessId, (int) pi.dwThreadId); */
|
|
|
|
/* Process has been created suspended; resume it now. */
|
|
ResumeThread (pi.hThread);
|
|
CloseHandle (pi.hThread);
|
|
|
|
*pid = handle_to_pid (pi.hProcess);
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
/* See exechelp.h for a description. */
|
|
gpg_error_t
|
|
gnupg_wait_process (const char *pgmname, pid_t pid, int hang, int *r_exitcode)
|
|
{
|
|
gpg_err_code_t ec;
|
|
HANDLE proc = fd_to_handle (pid);
|
|
int code;
|
|
DWORD exc;
|
|
|
|
if (r_exitcode)
|
|
*r_exitcode = -1;
|
|
|
|
if (pid == (pid_t)(-1))
|
|
return gpg_error (GPG_ERR_INV_VALUE);
|
|
|
|
/* FIXME: We should do a pth_waitpid here. However this has not yet
|
|
been implemented. A special W32 pth system call would even be
|
|
better. */
|
|
code = WaitForSingleObject (proc, hang? INFINITE : 0);
|
|
switch (code)
|
|
{
|
|
case WAIT_TIMEOUT:
|
|
ec = GPG_ERR_TIMEOUT;
|
|
break;
|
|
|
|
case WAIT_FAILED:
|
|
log_error (_("waiting for process %d to terminate failed: %s\n"),
|
|
(int)pid, w32_strerror (-1));
|
|
ec = GPG_ERR_GENERAL;
|
|
break;
|
|
|
|
case WAIT_OBJECT_0:
|
|
if (!GetExitCodeProcess (proc, &exc))
|
|
{
|
|
log_error (_("error getting exit code of process %d: %s\n"),
|
|
(int)pid, w32_strerror (-1) );
|
|
ec = GPG_ERR_GENERAL;
|
|
}
|
|
else if (exc)
|
|
{
|
|
log_error (_("error running `%s': exit status %d\n"),
|
|
pgmname, (int)exc );
|
|
if (r_exitcode)
|
|
*r_exitcode = (int)exc;
|
|
ec = GPG_ERR_GENERAL;
|
|
}
|
|
else
|
|
{
|
|
if (r_exitcode)
|
|
*r_exitcode = 0;
|
|
ec = 0;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
log_error ("WaitForSingleObject returned unexpected "
|
|
"code %d for pid %d\n", code, (int)pid );
|
|
ec = GPG_ERR_GENERAL;
|
|
break;
|
|
}
|
|
|
|
return gpg_err_make (GPG_ERR_SOURCE_DEFAULT, ec);
|
|
}
|
|
|
|
|
|
|
|
void
|
|
gnupg_release_process (pid_t pid)
|
|
{
|
|
if (pid != (pid_t)INVALID_HANDLE_VALUE)
|
|
{
|
|
HANDLE process = (HANDLE)pid;
|
|
|
|
CloseHandle (process);
|
|
}
|
|
}
|
|
|
|
|
|
/* Spawn a new process and immediatley detach from it. The name of
|
|
the program to exec is PGMNAME and its arguments are in ARGV (the
|
|
programname is automatically passed as first argument).
|
|
Environment strings in ENVP are set. An error is returned if
|
|
pgmname is not executable; to make this work it is necessary to
|
|
provide an absolute file name. All standard file descriptors are
|
|
connected to /dev/null. */
|
|
gpg_error_t
|
|
gnupg_spawn_process_detached (const char *pgmname, const char *argv[],
|
|
const char *envp[] )
|
|
{
|
|
gpg_error_t err;
|
|
SECURITY_ATTRIBUTES sec_attr;
|
|
PROCESS_INFORMATION pi =
|
|
{
|
|
NULL, /* Returns process handle. */
|
|
0, /* Returns primary thread handle. */
|
|
0, /* Returns pid. */
|
|
0 /* Returns tid. */
|
|
};
|
|
STARTUPINFO si;
|
|
int cr_flags;
|
|
char *cmdline;
|
|
|
|
|
|
/* FIXME: We don't make use of ENVP yet. It is currently only used
|
|
to pass the GPG_AGENT_INFO variable to gpg-agent. As the default
|
|
on windows is to use a standard socket, this does not really
|
|
matter. */
|
|
(void)envp;
|
|
|
|
if (access (pgmname, X_OK))
|
|
return gpg_error_from_syserror ();
|
|
|
|
/* Prepare security attributes. */
|
|
memset (&sec_attr, 0, sizeof sec_attr );
|
|
sec_attr.nLength = sizeof sec_attr;
|
|
sec_attr.bInheritHandle = FALSE;
|
|
|
|
/* Build the command line. */
|
|
err = build_w32_commandline (pgmname, argv, &cmdline);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Start the process. */
|
|
memset (&si, 0, sizeof si);
|
|
si.cb = sizeof (si);
|
|
si.dwFlags = STARTF_USESHOWWINDOW;
|
|
si.wShowWindow = DEBUG_W32_SPAWN? SW_SHOW : SW_MINIMIZE;
|
|
|
|
cr_flags = (CREATE_DEFAULT_ERROR_MODE
|
|
| GetPriorityClass (GetCurrentProcess ())
|
|
| CREATE_NEW_PROCESS_GROUP
|
|
| DETACHED_PROCESS);
|
|
/* log_debug ("CreateProcess(detached), path=`%s' cmdline=`%s'\n", */
|
|
/* pgmname, cmdline); */
|
|
if (!CreateProcess (pgmname, /* Program to start. */
|
|
cmdline, /* Command line arguments. */
|
|
&sec_attr, /* Process security attributes. */
|
|
&sec_attr, /* Thread security attributes. */
|
|
FALSE, /* Inherit handles. */
|
|
cr_flags, /* Creation flags. */
|
|
NULL, /* Environment. */
|
|
NULL, /* Use current drive/directory. */
|
|
&si, /* Startup information. */
|
|
&pi /* Returns process information. */
|
|
))
|
|
{
|
|
log_error ("CreateProcess(detached) failed: %s\n", w32_strerror (-1));
|
|
xfree (cmdline);
|
|
return gpg_error (GPG_ERR_GENERAL);
|
|
}
|
|
xfree (cmdline);
|
|
cmdline = NULL;
|
|
|
|
/* log_debug ("CreateProcess(detached) ready: hProcess=%p hThread=%p" */
|
|
/* " dwProcessID=%d dwThreadId=%d\n", */
|
|
/* pi.hProcess, pi.hThread, */
|
|
/* (int) pi.dwProcessId, (int) pi.dwThreadId); */
|
|
|
|
CloseHandle (pi.hThread);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* Kill a process; that is send an appropriate signal to the process.
|
|
gnupg_wait_process must be called to actually remove the process
|
|
from the system. An invalid PID is ignored. */
|
|
void
|
|
gnupg_kill_process (pid_t pid)
|
|
{
|
|
if (pid != (pid_t) INVALID_HANDLE_VALUE)
|
|
{
|
|
HANDLE process = (HANDLE) pid;
|
|
|
|
/* Arbitrary error code. */
|
|
TerminateProcess (process, 1);
|
|
}
|
|
}
|