2013-03-12 17:00:09 -04:00
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/*
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Copyright (C) 2010 Paul Davis
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2014-02-18 21:38:43 -05:00
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Copyright (C) 2010-2014 Robin Gareus <robin@gareus.org>
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Copyright (C) 2005-2008 Lennart Poettering
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2013-03-12 17:00:09 -04:00
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This program 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 2 of the License, or
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(at your option) any later version.
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This program 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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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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 <unistd.h>
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2014-04-19 20:51:00 -04:00
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#include <algorithm>
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2013-03-12 17:00:09 -04:00
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2013-06-07 14:50:59 -04:00
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#include <assert.h>
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2013-10-14 12:07:45 -04:00
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#ifndef COMPILER_MSVC
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2013-06-07 14:50:59 -04:00
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#include <dirent.h>
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2013-10-14 12:07:45 -04:00
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#endif
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2013-06-07 14:50:59 -04:00
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2013-10-14 12:00:28 -04:00
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#ifdef PLATFORM_WINDOWS
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2013-03-12 17:00:09 -04:00
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#include <windows.h>
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#else
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <sys/socket.h>
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2013-04-10 17:41:44 -04:00
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#include <sys/ioctl.h>
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2013-06-07 14:50:59 -04:00
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#include <sys/time.h>
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#include <sys/resource.h>
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2013-03-12 17:00:09 -04:00
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#endif
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2014-05-27 05:21:34 -04:00
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#include <glibmm/miscutils.h>
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2013-06-07 14:50:59 -04:00
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2014-03-13 11:50:44 -04:00
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#define USE_VFORK
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2014-05-27 05:21:34 -04:00
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#include "pbd/file_utils.h"
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#include "pbd/search_path.h"
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2014-02-18 21:38:43 -05:00
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#include "pbd/system_exec.h"
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2013-03-12 17:00:09 -04:00
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using namespace std;
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2014-02-18 21:38:43 -05:00
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using namespace PBD;
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2013-03-12 17:00:09 -04:00
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2014-02-18 21:38:43 -05:00
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static void * interposer_thread (void *arg);
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2014-11-23 15:01:06 -05:00
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#ifndef PLATFORM_WINDOWS /* POSIX Process only */
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2013-06-07 14:04:43 -04:00
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static void close_fd (int& fd) { if (fd >= 0) ::close (fd); fd = -1; }
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2014-11-23 15:01:06 -05:00
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#endif
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2013-04-29 21:28:11 -04:00
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2014-03-13 11:50:44 -04:00
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#if (!defined PLATFORM_WINDOWS && defined NO_VFORK)
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2013-06-07 14:50:59 -04:00
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/*
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* This function was part of libasyncns.
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* LGPL v2.1
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* Copyright 2005-2008 Lennart Poettering
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*/
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static int close_allv(const int except_fds[]) {
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struct rlimit rl;
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int fd;
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#ifdef __linux__
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DIR *d;
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assert(except_fds);
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if ((d = opendir("/proc/self/fd"))) {
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struct dirent *de;
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while ((de = readdir(d))) {
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int found;
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long l;
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char *e = NULL;
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int i;
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if (de->d_name[0] == '.')
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continue;
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errno = 0;
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l = strtol(de->d_name, &e, 10);
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if (errno != 0 || !e || *e) {
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closedir(d);
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errno = EINVAL;
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return -1;
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}
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fd = (int) l;
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if ((long) fd != l) {
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closedir(d);
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errno = EINVAL;
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return -1;
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}
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if (fd < 3)
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continue;
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if (fd == dirfd(d))
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continue;
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found = 0;
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for (i = 0; except_fds[i] >= 0; i++)
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if (except_fds[i] == fd) {
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found = 1;
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break;
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}
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if (found) continue;
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if (close(fd) < 0) {
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int saved_errno;
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saved_errno = errno;
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closedir(d);
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errno = saved_errno;
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return -1;
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}
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}
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closedir(d);
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return 0;
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}
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#endif
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if (getrlimit(RLIMIT_NOFILE, &rl) < 0)
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return -1;
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for (fd = 0; fd < (int) rl.rlim_max; fd++) {
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int i;
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if (fd <= 3)
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continue;
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for (i = 0; except_fds[i] >= 0; i++)
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if (except_fds[i] == fd)
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continue;
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if (close(fd) < 0 && errno != EBADF)
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return -1;
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}
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return 0;
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}
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2014-03-13 11:50:44 -04:00
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#endif /* not on windows, nor vfork */
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2013-06-07 14:50:59 -04:00
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2013-10-10 14:50:21 -04:00
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void
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SystemExec::init ()
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2013-03-12 17:00:09 -04:00
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{
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pthread_mutex_init(&write_lock, NULL);
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thread_active=false;
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pid = 0;
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pin[1] = -1;
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nicelevel = 0;
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envp = NULL;
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2013-10-14 12:00:28 -04:00
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#ifdef PLATFORM_WINDOWS
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2013-03-12 17:00:09 -04:00
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stdinP[0] = stdinP[1] = INVALID_HANDLE_VALUE;
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stdoutP[0] = stdoutP[1] = INVALID_HANDLE_VALUE;
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stderrP[0] = stderrP[1] = INVALID_HANDLE_VALUE;
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2016-02-13 11:04:11 -05:00
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w_args = NULL;
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2013-03-12 17:00:09 -04:00
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#endif
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2013-10-10 14:50:21 -04:00
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}
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SystemExec::SystemExec (std::string c, std::string a)
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: cmd(c)
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{
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init ();
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argp = NULL;
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2013-03-12 17:00:09 -04:00
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make_envp();
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make_argp(a);
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}
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SystemExec::SystemExec (std::string c, char **a)
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: cmd(c) , argp(a)
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{
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2013-10-10 14:50:21 -04:00
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init ();
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2013-10-14 12:00:28 -04:00
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#ifdef PLATFORM_WINDOWS
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2013-03-12 17:00:09 -04:00
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make_wargs(a);
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#endif
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make_envp();
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}
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2013-10-10 14:50:21 -04:00
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SystemExec::SystemExec (std::string command, const std::map<char, std::string> subs)
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{
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init ();
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make_argp_escaped(command, subs);
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2014-07-03 13:30:47 -04:00
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2016-02-13 11:04:11 -05:00
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#ifdef PLATFORM_WINDOWS
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2016-02-13 17:12:50 -05:00
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if (argp[0] && strlen (argp[0]) > 0) {
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std::string wa = argp[0];
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// only add quotes to command if required..
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if (argp[0][0] != '"'
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&& argp[0][strlen(argp[0])-1] != '"'
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&& strchr(argp[0], ' ')) {
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wa = "\"";
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wa += argp[0];
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wa += "\"";
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}
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// ...but always quote all args
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for (int i = 1; argp[i]; ++i) {
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std::string tmp (argp[i]);
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while (tmp.find("\"") != std::string::npos)
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tmp.replace(s.find("\""), 1, "\\\"");
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wa += " \"";
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2016-02-13 18:02:00 -05:00
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wa += tmp;
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2016-02-13 17:12:50 -05:00
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wa += '"';
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}
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w_args = strdup(wa.c_str());
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2016-02-13 11:04:11 -05:00
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}
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#else
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2014-07-03 13:30:47 -04:00
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if (find_file (Searchpath (Glib::getenv ("PATH")), argp[0], cmd)) {
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// argp[0] exists in $PATH` - set it to the actual path where it was found
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free (argp[0]);
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argp[0] = strdup(cmd.c_str ());
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2014-05-27 05:21:34 -04:00
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}
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2014-07-03 13:30:47 -04:00
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// else argp[0] not found in path - leave it as-is, it might be an absolute path
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2014-05-27 05:21:34 -04:00
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// Glib::find_program_in_path () is only available in Glib >= 2.28
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// cmd = Glib::find_program_in_path (argp[0]);
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2016-02-13 11:04:11 -05:00
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#endif
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2013-10-10 14:50:21 -04:00
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make_envp();
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}
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void
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SystemExec::make_argp_escaped(std::string command, const std::map<char, std::string> subs)
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{
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int inquotes = 0;
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int n = 0;
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size_t i = 0;
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std::string arg = "";
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argp = (char **) malloc(sizeof(char *));
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2014-05-18 15:49:58 -04:00
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for (i = 0; i <= command.length(); i++) { // include terminating '\0'
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2013-10-10 14:50:21 -04:00
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char c = command.c_str()[i];
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if (inquotes) {
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if (c == '"') {
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inquotes = 0;
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} else {
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// still in quotes - just copy
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arg += c;
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}
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} else switch (c) {
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case '%' :
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c = command.c_str()[++i];
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if (c == '%' || c == '\0') {
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// "%%", "%" at end-of-string => "%"
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arg += '%';
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} else {
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// search subs for string to substitute for char
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std::map<char, std::string>::const_iterator s = subs.find(c);
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if (s != subs.end()) {
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// found substitution
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arg += s->second;
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} else {
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// not a valid substitution, just copy
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arg += '%';
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arg += c;
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}
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}
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break;
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case '\\':
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c = command.c_str()[++i];
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switch (c) {
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case ' ' :
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case '"' : arg += c; break; // "\\", "\" at end-of-string => "\"
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2015-10-04 14:51:05 -04:00
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case '\0':
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2013-10-10 14:50:21 -04:00
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case '\\': arg += '\\'; break;
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default : arg += '\\'; arg += c; break;
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}
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break;
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case '"' :
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inquotes = 1;
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break;
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case ' ' :
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case '\t':
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2014-05-18 15:49:58 -04:00
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case '\0':
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2013-10-10 14:50:21 -04:00
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if (arg.length() > 0) {
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// if there wasn't already a space or tab, start a new parameter
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argp = (char **) realloc(argp, (n + 2) * sizeof(char *));
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argp[n++] = strdup (arg.c_str());
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arg = "";
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}
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break;
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default :
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arg += c;
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break;
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}
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}
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argp[n] = NULL;
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}
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2013-03-12 17:00:09 -04:00
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SystemExec::~SystemExec ()
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{
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terminate ();
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if (envp) {
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for (int i=0;envp[i];++i) {
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2014-07-03 13:30:47 -04:00
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free(envp[i]);
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2013-03-12 17:00:09 -04:00
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}
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free (envp);
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}
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if (argp) {
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for (int i=0;argp[i];++i) {
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2014-07-03 13:30:47 -04:00
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free(argp[i]);
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2013-03-12 17:00:09 -04:00
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}
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free (argp);
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}
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2013-10-14 12:00:28 -04:00
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#ifdef PLATFORM_WINDOWS
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2013-03-12 17:00:09 -04:00
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if (w_args) free(w_args);
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#endif
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pthread_mutex_destroy(&write_lock);
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}
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2014-02-18 21:38:43 -05:00
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static void *
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2013-03-12 17:00:09 -04:00
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interposer_thread (void *arg) {
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SystemExec *sex = static_cast<SystemExec *>(arg);
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sex->output_interposer();
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pthread_exit(0);
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return 0;
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}
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|
2016-02-12 19:39:41 -05:00
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string
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SystemExec::to_s () const
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{
|
2016-02-13 17:12:50 -05:00
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#ifdef PLATFORM_WINDOWS
|
2016-02-13 18:02:00 -05:00
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return string (w_args ? w_args : "");
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2016-02-13 17:12:50 -05:00
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#else
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2016-02-12 19:39:41 -05:00
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stringstream out;
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if (argp) {
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for (int i = 0; argp[i]; ++i) {
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out << argp[i] << " ";
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}
|
|
|
|
}
|
|
|
|
return out.str();
|
2016-02-13 17:12:50 -05:00
|
|
|
#endif
|
2016-02-12 19:39:41 -05:00
|
|
|
}
|
|
|
|
|
2013-10-14 12:00:28 -04:00
|
|
|
#ifdef PLATFORM_WINDOWS /* Windows Process */
|
2013-03-12 17:00:09 -04:00
|
|
|
|
|
|
|
/* HELPER FUNCTIONS */
|
|
|
|
|
|
|
|
static void create_pipe (HANDLE *pipe, bool in) {
|
|
|
|
SECURITY_ATTRIBUTES secAtt = { sizeof( SECURITY_ATTRIBUTES ), NULL, TRUE };
|
|
|
|
HANDLE tmpHandle;
|
|
|
|
if (in) {
|
|
|
|
if (!CreatePipe(&pipe[0], &tmpHandle, &secAtt, 1024 * 1024)) return;
|
|
|
|
if (!DuplicateHandle(GetCurrentProcess(), tmpHandle, GetCurrentProcess(), &pipe[1], 0, FALSE, DUPLICATE_SAME_ACCESS)) return;
|
|
|
|
} else {
|
|
|
|
if (!CreatePipe(&tmpHandle, &pipe[1], &secAtt, 1024 * 1024)) return;
|
|
|
|
if (!DuplicateHandle(GetCurrentProcess(), tmpHandle, GetCurrentProcess(), &pipe[0], 0, FALSE, DUPLICATE_SAME_ACCESS)) return;
|
|
|
|
}
|
|
|
|
CloseHandle(tmpHandle);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void destroy_pipe (HANDLE pipe[2]) {
|
|
|
|
if (pipe[0] != INVALID_HANDLE_VALUE) {
|
|
|
|
CloseHandle(pipe[0]);
|
|
|
|
pipe[0] = INVALID_HANDLE_VALUE;
|
|
|
|
}
|
|
|
|
if (pipe[1] != INVALID_HANDLE_VALUE) {
|
|
|
|
CloseHandle(pipe[1]);
|
|
|
|
pipe[1] = INVALID_HANDLE_VALUE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static BOOL CALLBACK my_terminateApp(HWND hwnd, LPARAM procId)
|
|
|
|
{
|
|
|
|
DWORD currentProcId = 0;
|
|
|
|
GetWindowThreadProcessId(hwnd, ¤tProcId);
|
|
|
|
if (currentProcId == (DWORD)procId)
|
|
|
|
PostMessage(hwnd, WM_CLOSE, 0, 0);
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* PROCESS API */
|
|
|
|
|
|
|
|
void
|
|
|
|
SystemExec::make_envp() {
|
|
|
|
;/* environemt is copied over with CreateProcess(...,env=0 ,..) */
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
SystemExec::make_wargs(char **a) {
|
|
|
|
std::string wa = cmd;
|
|
|
|
if (cmd[0] != '"' && cmd[cmd.size()] != '"' && strchr(cmd.c_str(), ' ')) { wa = "\"" + cmd + "\""; }
|
|
|
|
std::replace(cmd.begin(), cmd.end(), '/', '\\' );
|
2014-04-19 20:51:00 -04:00
|
|
|
char **tmp = ++a;
|
2013-03-12 17:00:09 -04:00
|
|
|
while (tmp && *tmp) {
|
|
|
|
wa.append(" \"");
|
2015-08-03 17:06:08 -04:00
|
|
|
wa.append(*tmp);
|
|
|
|
if (strlen(*tmp) > 0 && (*tmp)[strlen(*tmp) - 1] == '\\') {
|
2015-08-03 17:09:51 -04:00
|
|
|
wa.append("\\");
|
2014-04-19 20:51:00 -04:00
|
|
|
}
|
2013-03-12 17:00:09 -04:00
|
|
|
wa.append("\"");
|
|
|
|
tmp++;
|
|
|
|
}
|
|
|
|
w_args = strdup(wa.c_str());
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
SystemExec::make_argp(std::string args) {
|
|
|
|
std::string wa = cmd;
|
|
|
|
if (cmd[0] != '"' && cmd[cmd.size()] != '"' && strchr(cmd.c_str(), ' ')) { wa = "\"" + cmd + "\""; }
|
|
|
|
std::replace(cmd.begin(), cmd.end(), '/', '\\' );
|
|
|
|
wa.append(" ");
|
|
|
|
wa.append(args);
|
|
|
|
w_args = strdup(wa.c_str());
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
SystemExec::terminate ()
|
|
|
|
{
|
|
|
|
::pthread_mutex_lock(&write_lock);
|
2014-04-20 17:02:32 -04:00
|
|
|
|
|
|
|
close_stdin();
|
|
|
|
|
2013-03-12 17:00:09 -04:00
|
|
|
if (pid) {
|
|
|
|
/* terminate */
|
|
|
|
EnumWindows(my_terminateApp, (LPARAM)pid->dwProcessId);
|
|
|
|
PostThreadMessage(pid->dwThreadId, WM_CLOSE, 0, 0);
|
|
|
|
|
|
|
|
/* kill ! */
|
|
|
|
TerminateProcess(pid->hProcess, 0xf291);
|
|
|
|
|
|
|
|
CloseHandle(pid->hThread);
|
|
|
|
CloseHandle(pid->hProcess);
|
|
|
|
destroy_pipe(stdinP);
|
|
|
|
destroy_pipe(stdoutP);
|
|
|
|
destroy_pipe(stderrP);
|
|
|
|
delete pid;
|
|
|
|
pid=0;
|
|
|
|
}
|
|
|
|
::pthread_mutex_unlock(&write_lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
SystemExec::wait (int options)
|
|
|
|
{
|
|
|
|
while (is_running()) {
|
2014-07-11 11:03:55 -04:00
|
|
|
WaitForSingleObject(pid->hProcess, 40);
|
2013-03-12 17:00:09 -04:00
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool
|
|
|
|
SystemExec::is_running ()
|
|
|
|
{
|
2014-07-11 11:03:55 -04:00
|
|
|
if (!pid) return false;
|
|
|
|
DWORD exit_code;
|
|
|
|
if (GetExitCodeProcess(pid->hProcess, &exit_code)) {
|
|
|
|
if (exit_code == STILL_ACTIVE) return true;
|
|
|
|
}
|
|
|
|
return false;
|
2013-03-12 17:00:09 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
2014-03-13 11:50:44 -04:00
|
|
|
SystemExec::start (int stderr_mode, const char * /*vfork_exec_wrapper*/)
|
2013-03-12 17:00:09 -04:00
|
|
|
{
|
|
|
|
char* working_dir = 0;
|
|
|
|
|
|
|
|
if (pid) { return 0; }
|
|
|
|
|
|
|
|
pid = new PROCESS_INFORMATION;
|
|
|
|
memset(pid, 0, sizeof(PROCESS_INFORMATION));
|
|
|
|
|
|
|
|
create_pipe(stdinP, true);
|
|
|
|
create_pipe(stdoutP, false);
|
|
|
|
|
|
|
|
if (stderr_mode == 2) {
|
|
|
|
/* merge stout & stderr */
|
|
|
|
DuplicateHandle(GetCurrentProcess(), stdoutP[1], GetCurrentProcess(), &stderrP[1], 0, TRUE, DUPLICATE_SAME_ACCESS);
|
|
|
|
} else if (stderr_mode == 1) {
|
|
|
|
//TODO read/flush this pipe or close it...
|
|
|
|
create_pipe(stderrP, false);
|
|
|
|
} else {
|
|
|
|
//TODO: keep stderr of this process mode.
|
|
|
|
}
|
|
|
|
|
|
|
|
bool success = false;
|
|
|
|
STARTUPINFOA startupInfo = { sizeof( STARTUPINFO ), 0, 0, 0,
|
|
|
|
(unsigned long)CW_USEDEFAULT, (unsigned long)CW_USEDEFAULT,
|
|
|
|
(unsigned long)CW_USEDEFAULT, (unsigned long)CW_USEDEFAULT,
|
|
|
|
0, 0, 0,
|
|
|
|
STARTF_USESTDHANDLES,
|
|
|
|
0, 0, 0,
|
|
|
|
stdinP[0], stdoutP[1], stderrP[1]
|
|
|
|
};
|
|
|
|
|
|
|
|
success = CreateProcess(0, w_args,
|
|
|
|
0, 0, /* bInheritHandles = */ TRUE,
|
|
|
|
(CREATE_NO_WINDOW&0) | CREATE_UNICODE_ENVIRONMENT | (0&CREATE_NEW_CONSOLE),
|
|
|
|
/*env = */ 0,
|
|
|
|
working_dir,
|
|
|
|
&startupInfo, pid);
|
|
|
|
|
|
|
|
if (stdinP[0] != INVALID_HANDLE_VALUE) {
|
|
|
|
CloseHandle(stdinP[0]);
|
|
|
|
stdinP[0] = INVALID_HANDLE_VALUE;
|
|
|
|
}
|
|
|
|
if (stdoutP[1] != INVALID_HANDLE_VALUE) {
|
|
|
|
CloseHandle(stdoutP[1]);
|
|
|
|
stdoutP[1] = INVALID_HANDLE_VALUE;
|
|
|
|
}
|
|
|
|
if (stderrP[1] != INVALID_HANDLE_VALUE) {
|
|
|
|
CloseHandle(stderrP[1]);
|
|
|
|
stderrP[1] = INVALID_HANDLE_VALUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!success) {
|
|
|
|
CloseHandle(pid->hThread);
|
|
|
|
CloseHandle(pid->hProcess);
|
|
|
|
destroy_pipe(stdinP);
|
|
|
|
destroy_pipe(stdoutP);
|
|
|
|
destroy_pipe(stderrP);
|
|
|
|
delete pid;
|
|
|
|
pid=0;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
int rv = pthread_create(&thread_id_tt, NULL, interposer_thread, this);
|
|
|
|
thread_active=true;
|
|
|
|
if (rv) {
|
|
|
|
thread_active=false;
|
|
|
|
terminate();
|
|
|
|
return -2;
|
|
|
|
}
|
|
|
|
Sleep(20);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
SystemExec::output_interposer()
|
|
|
|
{
|
|
|
|
DWORD bytesRead = 0;
|
|
|
|
char data[BUFSIZ];
|
2013-04-10 17:41:44 -04:00
|
|
|
#if 0 // untested code to set up nonblocking
|
|
|
|
unsigned long l = 1;
|
|
|
|
ioctlsocket(stdoutP[0], FIONBIO, &l);
|
|
|
|
#endif
|
2013-03-12 17:00:09 -04:00
|
|
|
while(1) {
|
|
|
|
#if 0 // for non-blocking pipes..
|
|
|
|
DWORD bytesAvail = 0;
|
|
|
|
PeekNamedPipe(stdoutP[0], 0, 0, 0, &bytesAvail, 0);
|
|
|
|
if (bytesAvail < 1) {Sleep(500); printf("N/A\n"); continue;}
|
|
|
|
#endif
|
|
|
|
if (stdoutP[0] == INVALID_HANDLE_VALUE) break;
|
2014-04-19 20:51:00 -04:00
|
|
|
if (!ReadFile(stdoutP[0], data, BUFSIZ, &bytesRead, 0)) {
|
|
|
|
DWORD err = GetLastError();
|
|
|
|
if (err == ERROR_IO_PENDING) continue;
|
|
|
|
break;
|
|
|
|
}
|
2013-03-12 17:00:09 -04:00
|
|
|
if (bytesRead < 1) continue; /* actually not needed; but this is safe. */
|
|
|
|
data[bytesRead] = 0;
|
|
|
|
ReadStdout(data, bytesRead);/* EMIT SIGNAL */
|
|
|
|
}
|
|
|
|
Terminated();/* EMIT SIGNAL */
|
2015-10-23 17:27:15 -04:00
|
|
|
pthread_exit(0);
|
2013-03-12 17:00:09 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
SystemExec::close_stdin()
|
|
|
|
{
|
|
|
|
if (stdinP[0]!= INVALID_HANDLE_VALUE) FlushFileBuffers(stdinP[0]);
|
|
|
|
if (stdinP[1]!= INVALID_HANDLE_VALUE) FlushFileBuffers(stdinP[1]);
|
|
|
|
Sleep(200);
|
|
|
|
destroy_pipe(stdinP);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
SystemExec::write_to_stdin(std::string d, size_t len)
|
|
|
|
{
|
|
|
|
const char *data;
|
|
|
|
DWORD r,c;
|
|
|
|
|
|
|
|
::pthread_mutex_lock(&write_lock);
|
|
|
|
|
|
|
|
data=d.c_str();
|
|
|
|
if (len == 0) {
|
|
|
|
len=(d.length());
|
|
|
|
}
|
|
|
|
c=0;
|
|
|
|
while (c < len) {
|
|
|
|
if (!WriteFile(stdinP[1], data+c, len-c, &r, NULL)) {
|
|
|
|
if (GetLastError() == 0xE8 /*NT_STATUS_INVALID_USER_BUFFER*/) {
|
|
|
|
Sleep(100);
|
|
|
|
continue;
|
|
|
|
} else {
|
|
|
|
fprintf(stderr, "SYSTEM-EXEC: stdin write error.\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
c += r;
|
|
|
|
}
|
|
|
|
::pthread_mutex_unlock(&write_lock);
|
|
|
|
return c;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* end windows process */
|
|
|
|
#else
|
|
|
|
/* UNIX/POSIX process */
|
|
|
|
|
|
|
|
extern char **environ;
|
|
|
|
void
|
|
|
|
SystemExec::make_envp() {
|
|
|
|
int i=0;
|
|
|
|
envp = (char **) calloc(1, sizeof(char*));
|
|
|
|
/* copy current environment */
|
|
|
|
for (i=0;environ[i];++i) {
|
|
|
|
envp[i] = strdup(environ[i]);
|
|
|
|
envp = (char **) realloc(envp, (i+2) * sizeof(char*));
|
|
|
|
}
|
|
|
|
envp[i] = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
SystemExec::make_argp(std::string args) {
|
|
|
|
int argn = 1;
|
|
|
|
char *cp1;
|
|
|
|
char *cp2;
|
|
|
|
|
|
|
|
char *carg = strdup(args.c_str());
|
|
|
|
|
|
|
|
argp = (char **) malloc((argn + 1) * sizeof(char *));
|
|
|
|
if (argp == (char **) 0) {
|
|
|
|
free(carg);
|
|
|
|
return; // FATAL
|
|
|
|
}
|
|
|
|
|
|
|
|
argp[0] = strdup(cmd.c_str());
|
|
|
|
|
|
|
|
/* TODO: quotations and escapes
|
|
|
|
* http://stackoverflow.com/questions/1511797/convert-string-to-argv-in-c
|
|
|
|
*
|
|
|
|
* It's actually not needed. All relevant invocations specify 'argp' directly.
|
|
|
|
* Only 'xjadeo -L -R' uses this function and that uses neither quotations
|
|
|
|
* nor arguments with white-space.
|
|
|
|
*/
|
|
|
|
for (cp1 = cp2 = carg; *cp2 != '\0'; ++cp2) {
|
|
|
|
if (*cp2 == ' ') {
|
|
|
|
*cp2 = '\0';
|
|
|
|
argp[argn++] = strdup(cp1);
|
|
|
|
cp1 = cp2 + 1;
|
2013-10-10 14:50:21 -04:00
|
|
|
argp = (char **) realloc(argp, (argn + 1) * sizeof(char *));
|
2013-03-12 17:00:09 -04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
if (cp2 != cp1) {
|
|
|
|
argp[argn++] = strdup(cp1);
|
|
|
|
argp = (char **) realloc(argp, (argn + 1) * sizeof(char *));
|
|
|
|
}
|
|
|
|
argp[argn] = (char *) 0;
|
|
|
|
free(carg);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
SystemExec::terminate ()
|
|
|
|
{
|
2013-03-28 18:32:02 -04:00
|
|
|
::pthread_mutex_lock(&write_lock);
|
2013-06-07 13:13:12 -04:00
|
|
|
|
|
|
|
/* close stdin in an attempt to get the child to exit cleanly.
|
|
|
|
*/
|
|
|
|
|
2013-03-12 17:00:09 -04:00
|
|
|
close_stdin();
|
2013-06-07 11:59:47 -04:00
|
|
|
|
2013-03-12 17:00:09 -04:00
|
|
|
if (pid) {
|
2014-06-04 20:09:18 -04:00
|
|
|
::usleep(200000);
|
2013-04-10 17:41:44 -04:00
|
|
|
sched_yield();
|
2013-03-12 17:00:09 -04:00
|
|
|
wait(WNOHANG);
|
|
|
|
}
|
|
|
|
|
2013-06-07 13:13:12 -04:00
|
|
|
/* if pid is non-zero, the child task is still executing (i.e. it did
|
|
|
|
* not exit in response to stdin being closed). try to kill it.
|
|
|
|
*/
|
2015-10-05 10:17:49 -04:00
|
|
|
|
2013-03-12 17:00:09 -04:00
|
|
|
if (pid) {
|
|
|
|
::kill(pid, SIGTERM);
|
2014-06-04 20:09:18 -04:00
|
|
|
::usleep(250000);
|
2013-04-10 17:41:44 -04:00
|
|
|
sched_yield();
|
2013-03-12 17:00:09 -04:00
|
|
|
wait(WNOHANG);
|
|
|
|
}
|
2013-06-07 13:13:12 -04:00
|
|
|
|
|
|
|
/* if pid is non-zero, the child task is STILL executing after being
|
|
|
|
* sent SIGTERM. Act tough ... send SIGKILL
|
|
|
|
*/
|
|
|
|
|
2013-03-12 17:00:09 -04:00
|
|
|
if (pid) {
|
|
|
|
::fprintf(stderr, "Process is still running! trying SIGKILL\n");
|
|
|
|
::kill(pid, SIGKILL);
|
|
|
|
}
|
|
|
|
|
|
|
|
wait();
|
|
|
|
if (thread_active) pthread_join(thread_id_tt, NULL);
|
2013-03-28 18:32:02 -04:00
|
|
|
thread_active = false;
|
2015-04-30 15:15:35 -04:00
|
|
|
assert(pid == 0);
|
2013-03-28 18:32:02 -04:00
|
|
|
::pthread_mutex_unlock(&write_lock);
|
2013-03-12 17:00:09 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
SystemExec::wait (int options)
|
|
|
|
{
|
|
|
|
int status=0;
|
2013-06-07 13:13:12 -04:00
|
|
|
int ret;
|
|
|
|
|
2013-03-12 17:00:09 -04:00
|
|
|
if (pid==0) return -1;
|
2013-06-07 13:13:12 -04:00
|
|
|
|
|
|
|
ret = waitpid (pid, &status, options);
|
|
|
|
|
|
|
|
if (ret == pid) {
|
2013-06-07 10:43:41 -04:00
|
|
|
if (WEXITSTATUS(status) || WIFSIGNALED(status)) {
|
|
|
|
pid=0;
|
|
|
|
}
|
|
|
|
} else {
|
2013-06-07 13:13:12 -04:00
|
|
|
if (ret != 0) {
|
|
|
|
if (errno == ECHILD) {
|
|
|
|
/* no currently running children, reset pid */
|
|
|
|
pid=0;
|
|
|
|
}
|
|
|
|
} /* else the process is still running */
|
2013-03-12 17:00:09 -04:00
|
|
|
}
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool
|
|
|
|
SystemExec::is_running ()
|
|
|
|
{
|
|
|
|
int status=0;
|
|
|
|
if (pid==0) return false;
|
|
|
|
if (::waitpid(pid, &status, WNOHANG)==0) return true;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
2014-03-13 11:50:44 -04:00
|
|
|
SystemExec::start (int stderr_mode, const char *vfork_exec_wrapper)
|
2013-03-12 17:00:09 -04:00
|
|
|
{
|
|
|
|
if (is_running()) {
|
|
|
|
return 0; // mmh what to return here?
|
|
|
|
}
|
|
|
|
int r;
|
|
|
|
|
|
|
|
if (::pipe(pin) < 0 || ::pipe(pout) < 0 || ::pipe(pok) < 0) {
|
|
|
|
/* Something unexpected went wrong creating a pipe. */
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2014-03-13 11:50:44 -04:00
|
|
|
#ifndef NO_VFORK
|
2014-03-11 10:48:13 -04:00
|
|
|
r = ::vfork();
|
|
|
|
#else
|
2013-03-12 17:00:09 -04:00
|
|
|
r = ::fork();
|
2014-03-11 10:48:13 -04:00
|
|
|
#endif
|
2013-03-12 17:00:09 -04:00
|
|
|
if (r < 0) {
|
|
|
|
/* failed to fork */
|
|
|
|
return -2;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (r > 0) {
|
|
|
|
/* main */
|
|
|
|
pid=r;
|
|
|
|
|
|
|
|
/* check if execve was successful. */
|
2013-06-07 14:04:43 -04:00
|
|
|
close_fd(pok[1]);
|
2013-03-12 17:00:09 -04:00
|
|
|
char buf;
|
|
|
|
for ( ;; ) {
|
2013-04-10 17:41:44 -04:00
|
|
|
ssize_t n = ::read(pok[0], &buf, 1 );
|
2013-03-12 17:00:09 -04:00
|
|
|
if ( n==1 ) {
|
|
|
|
/* child process returned from execve */
|
|
|
|
pid=0;
|
2013-06-07 14:04:43 -04:00
|
|
|
close_fd(pok[0]);
|
2014-03-13 11:50:44 -04:00
|
|
|
close_fd(pok[1]);
|
2013-06-07 14:04:43 -04:00
|
|
|
close_fd(pin[1]);
|
|
|
|
close_fd(pin[0]);
|
|
|
|
close_fd(pout[1]);
|
|
|
|
close_fd(pout[0]);
|
2013-03-12 17:00:09 -04:00
|
|
|
return -3;
|
|
|
|
} else if ( n==-1 ) {
|
|
|
|
if ( errno==EAGAIN || errno==EINTR )
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
2013-06-07 14:04:43 -04:00
|
|
|
close_fd(pok[0]);
|
2013-03-12 17:00:09 -04:00
|
|
|
/* child started successfully */
|
|
|
|
|
2013-06-07 14:04:43 -04:00
|
|
|
close_fd(pout[1]);
|
|
|
|
close_fd(pin[0]);
|
2013-03-12 17:00:09 -04:00
|
|
|
int rv = pthread_create(&thread_id_tt, NULL, interposer_thread, this);
|
|
|
|
|
|
|
|
thread_active=true;
|
|
|
|
if (rv) {
|
|
|
|
thread_active=false;
|
|
|
|
terminate();
|
|
|
|
return -2;
|
|
|
|
}
|
|
|
|
return 0; /* all systems go - return to main */
|
|
|
|
}
|
|
|
|
|
2014-03-13 11:50:44 -04:00
|
|
|
#ifdef NO_VFORK
|
2013-03-12 17:00:09 -04:00
|
|
|
/* child process - exec external process */
|
2013-06-07 14:04:43 -04:00
|
|
|
close_fd(pok[0]);
|
2013-03-12 17:00:09 -04:00
|
|
|
::fcntl(pok[1], F_SETFD, FD_CLOEXEC);
|
|
|
|
|
2013-06-07 14:04:43 -04:00
|
|
|
close_fd(pin[1]);
|
2013-03-12 17:00:09 -04:00
|
|
|
if (pin[0] != STDIN_FILENO) {
|
|
|
|
::dup2(pin[0], STDIN_FILENO);
|
|
|
|
}
|
2013-06-07 14:04:43 -04:00
|
|
|
close_fd(pin[0]);
|
|
|
|
close_fd(pout[0]);
|
2013-03-12 17:00:09 -04:00
|
|
|
if (pout[1] != STDOUT_FILENO) {
|
|
|
|
::dup2(pout[1], STDOUT_FILENO);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (stderr_mode == 2) {
|
|
|
|
/* merge STDERR into output */
|
|
|
|
if (pout[1] != STDERR_FILENO) {
|
|
|
|
::dup2(pout[1], STDERR_FILENO);
|
|
|
|
}
|
|
|
|
} else if (stderr_mode == 1) {
|
|
|
|
/* ignore STDERR */
|
|
|
|
::close(STDERR_FILENO);
|
|
|
|
} else {
|
|
|
|
/* keep STDERR */
|
|
|
|
}
|
|
|
|
|
|
|
|
if (pout[1] != STDOUT_FILENO && pout[1] != STDERR_FILENO) {
|
2013-06-07 14:04:43 -04:00
|
|
|
close_fd(pout[1]);
|
2013-03-12 17:00:09 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
if (nicelevel !=0) {
|
|
|
|
::nice(nicelevel);
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef HAVE_SIGSET
|
|
|
|
sigset(SIGPIPE, SIG_DFL);
|
|
|
|
#else
|
|
|
|
signal(SIGPIPE, SIG_DFL);
|
|
|
|
#endif
|
2014-07-11 09:58:45 -04:00
|
|
|
if (!vfork_exec_wrapper) {
|
|
|
|
error << _("Cannot start external process, no vfork wrapper") << endmsg;
|
|
|
|
return -1;
|
|
|
|
}
|
2013-03-12 17:00:09 -04:00
|
|
|
|
2014-02-25 03:38:14 -05:00
|
|
|
int good_fds[2] = { pok[1], -1 };
|
2013-06-07 14:50:59 -04:00
|
|
|
close_allv(good_fds);
|
|
|
|
|
2013-03-12 17:00:09 -04:00
|
|
|
::execve(argp[0], argp, envp);
|
|
|
|
/* if we reach here something went wrong.. */
|
|
|
|
char buf = 0;
|
|
|
|
(void) ::write(pok[1], &buf, 1 );
|
2013-06-07 14:04:43 -04:00
|
|
|
close_fd(pok[1]);
|
2013-03-12 17:00:09 -04:00
|
|
|
exit(-1);
|
|
|
|
return -1;
|
2014-03-11 10:48:13 -04:00
|
|
|
#else
|
|
|
|
|
|
|
|
/* XXX this should be done before vfork()
|
2014-03-13 11:50:44 -04:00
|
|
|
* calling malloc here only increases the time vfork() blocks
|
2014-03-11 10:48:13 -04:00
|
|
|
*/
|
|
|
|
int argn = 0;
|
|
|
|
for (int i=0;argp[i];++i) { argn++; }
|
|
|
|
char **argx = (char **) malloc((argn + 10) * sizeof(char *));
|
2014-03-13 11:50:44 -04:00
|
|
|
argx[0] = strdup(vfork_exec_wrapper); // XXX
|
2014-03-11 10:48:13 -04:00
|
|
|
|
|
|
|
#define FDARG(NUM, FDN) \
|
|
|
|
argx[NUM] = (char*) calloc(6, sizeof(char)); snprintf(argx[NUM], 6, "%d", FDN);
|
|
|
|
|
|
|
|
FDARG(1, pok[0])
|
|
|
|
FDARG(2, pok[1])
|
|
|
|
FDARG(3, pin[0])
|
|
|
|
FDARG(4, pin[1])
|
|
|
|
FDARG(5, pout[0])
|
|
|
|
FDARG(6, pout[1])
|
|
|
|
FDARG(7, stderr_mode)
|
|
|
|
FDARG(8, nicelevel)
|
|
|
|
|
|
|
|
for (int i=0;argp[i];++i) {
|
|
|
|
argx[9+i] = argp[i];
|
|
|
|
}
|
|
|
|
argx[argn+9] = NULL;
|
|
|
|
|
|
|
|
::execve(argx[0], argx, envp);
|
|
|
|
|
|
|
|
/* if we reach here something went wrong.. */
|
|
|
|
char buf = 0;
|
|
|
|
(void) ::write(pok[1], &buf, 1 );
|
|
|
|
close_fd(pok[1]);
|
|
|
|
exit(-1);
|
|
|
|
return -1;
|
|
|
|
#endif
|
2013-03-12 17:00:09 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
SystemExec::output_interposer()
|
|
|
|
{
|
|
|
|
int rfd=pout[0];
|
|
|
|
char buf[BUFSIZ];
|
2013-04-10 17:41:44 -04:00
|
|
|
ssize_t r;
|
|
|
|
unsigned long l = 1;
|
|
|
|
|
2013-06-07 13:13:12 -04:00
|
|
|
ioctl(rfd, FIONBIO, &l); // set non-blocking I/O
|
2013-04-10 17:41:44 -04:00
|
|
|
|
2013-03-12 17:00:09 -04:00
|
|
|
for (;fcntl(rfd, F_GETFL)!=-1;) {
|
|
|
|
r = read(rfd, buf, sizeof(buf));
|
|
|
|
if (r < 0 && (errno == EINTR || errno == EAGAIN)) {
|
2014-07-06 17:44:48 -04:00
|
|
|
fd_set rfds;
|
|
|
|
struct timeval tv;
|
|
|
|
FD_ZERO(&rfds);
|
|
|
|
FD_SET(rfd, &rfds);
|
|
|
|
tv.tv_sec = 0;
|
|
|
|
tv.tv_usec = 10000;
|
|
|
|
int rv = select(1, &rfds, NULL, NULL, &tv);
|
|
|
|
if (rv == -1) {
|
|
|
|
break;
|
|
|
|
}
|
2013-03-12 17:00:09 -04:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (r <= 0) {
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
buf[r]=0;
|
|
|
|
std::string rv = std::string(buf,r); // TODO: check allocation strategy
|
|
|
|
ReadStdout(rv, r);/* EMIT SIGNAL */
|
|
|
|
}
|
|
|
|
Terminated();/* EMIT SIGNAL */
|
2015-10-23 17:27:15 -04:00
|
|
|
pthread_exit(0);
|
2013-03-12 17:00:09 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
SystemExec::close_stdin()
|
|
|
|
{
|
|
|
|
if (pin[1]<0) return;
|
2013-06-07 14:04:43 -04:00
|
|
|
close_fd(pin[0]);
|
|
|
|
close_fd(pin[1]);
|
|
|
|
close_fd(pout[0]);
|
|
|
|
close_fd(pout[1]);
|
2013-03-12 17:00:09 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
SystemExec::write_to_stdin(std::string d, size_t len)
|
|
|
|
{
|
|
|
|
const char *data;
|
2013-06-07 11:59:47 -04:00
|
|
|
ssize_t r;
|
|
|
|
size_t c;
|
2013-03-12 17:00:09 -04:00
|
|
|
::pthread_mutex_lock(&write_lock);
|
|
|
|
|
|
|
|
data=d.c_str();
|
|
|
|
if (len == 0) {
|
|
|
|
len=(d.length());
|
|
|
|
}
|
|
|
|
c=0;
|
|
|
|
while (c < len) {
|
|
|
|
for (;;) {
|
|
|
|
r=::write(pin[1], data+c, len-c);
|
|
|
|
if (r < 0 && (errno == EINTR || errno == EAGAIN)) {
|
|
|
|
sleep(1);
|
|
|
|
continue;
|
|
|
|
}
|
2013-06-07 11:59:47 -04:00
|
|
|
if ((size_t) r != (len-c)) {
|
2013-03-12 17:00:09 -04:00
|
|
|
::pthread_mutex_unlock(&write_lock);
|
|
|
|
return c;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
c += r;
|
|
|
|
}
|
2013-03-28 16:54:44 -04:00
|
|
|
fsync(pin[1]);
|
2013-03-12 17:00:09 -04:00
|
|
|
::pthread_mutex_unlock(&write_lock);
|
|
|
|
return c;
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif // end UNIX process
|