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6a4e1fff78
php-src/ext/standard/proc_open.c
Wez Furlong 4d5ce8cd08 Fix Bug #28251
2004-05-02 11:13:08 +00:00

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23 KiB
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2004 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.0 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_0.txt. |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Wez Furlong <wez@thebrainroom.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#define _XOPEN_SOURCE
#define _BSD_SOURCE
#include "php.h"
#include <stdio.h>
#include <ctype.h>
#include "php_string.h"
#include "safe_mode.h"
#include "ext/standard/head.h"
#include "ext/standard/file.h"
#include "exec.h"
#include "php_globals.h"
#include "SAPI.h"
#if HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#if HAVE_SIGNAL_H
#include <signal.h>
#endif
#if HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#if HAVE_FCNTL_H
#include <fcntl.h>
#endif
/* This symbol is defined in ext/standard/config.m4.
* Essentially, it is set if you HAVE_FORK || PHP_WIN32
* Otherplatforms may modify that configure check and add suitable #ifdefs
* around the alternate code.
* */
#ifdef PHP_CAN_SUPPORT_PROC_OPEN
#if HAVE_PTSNAME && HAVE_GRANTPT && HAVE_UNLOCKPT && HAVE_SYS_IOCTL_H && HAVE_TERMIOS_H
# include <sys/ioctl.h>
# include <termios.h>
# ifdef TIOCNOTTY
# define PHP_CAN_DO_PTS 1
# endif
#endif
#include "proc_open.h"
static int le_proc_open;
/* {{{ _php_array_to_envp */
static php_process_env_t _php_array_to_envp(zval *environment, int is_persistent TSRMLS_DC)
{
zval **element;
php_process_env_t env;
char *string_key, *data;
#ifndef PHP_WIN32
char **ep;
#endif
char *p;
uint string_length, cnt, l, sizeenv=0, el_len;
ulong num_key;
HashTable *target_hash;
HashPosition pos;
memset(&env, 0, sizeof(env));
if (!environment) {
return env;
}
cnt = zend_hash_num_elements(Z_ARRVAL_P(environment));
if (cnt < 1) {
return env;
}
target_hash = HASH_OF(environment);
if (!target_hash) {
return env;
}
/* first, we have to get the size of all the elements in the hash */
for (zend_hash_internal_pointer_reset_ex(target_hash, &pos);
zend_hash_get_current_data_ex(target_hash, (void **) &element, &pos) == SUCCESS;
zend_hash_move_forward_ex(target_hash, &pos)) {
convert_to_string_ex(element);
el_len = Z_STRLEN_PP(element);
if (el_len == 0) {
continue;
}
sizeenv += el_len+1;
switch (zend_hash_get_current_key_ex(target_hash, &string_key, &string_length, &num_key, 0, &pos)) {
case HASH_KEY_IS_STRING:
if (string_length == 0) {
continue;
}
sizeenv += string_length+1;
break;
}
}
#ifndef PHP_WIN32
ep = env.envarray = (char **) pecalloc(cnt + 1, sizeof(char *), is_persistent);
#endif
p = env.envp = (char *) pecalloc(sizeenv + 4, 1, is_persistent);
for (zend_hash_internal_pointer_reset_ex(target_hash, &pos);
zend_hash_get_current_data_ex(target_hash, (void **) &element, &pos) == SUCCESS;
zend_hash_move_forward_ex(target_hash, &pos)) {
convert_to_string_ex(element);
el_len = Z_STRLEN_PP(element);
if (el_len == 0) {
continue;
}
data = Z_STRVAL_PP(element);
switch (zend_hash_get_current_key_ex(target_hash, &string_key, &string_length, &num_key, 0, &pos)) {
case HASH_KEY_IS_STRING:
if (string_length == 0) {
continue;
}
l = string_length + el_len + 1;
memcpy(p, string_key, string_length);
strcat(p, "=");
strcat(p, data);
#ifndef PHP_WIN32
*ep = p;
++ep;
#endif
p += l;
break;
case HASH_KEY_IS_LONG:
memcpy(p,data,el_len);
#ifndef PHP_WIN32
*ep = p;
++ep;
#endif
p += el_len + 1;
break;
case HASH_KEY_NON_EXISTANT:
break;
}
}
assert(p - env.envp <= sizeenv);
zend_hash_internal_pointer_reset_ex(target_hash, &pos);
return env;
}
/* }}} */
/* {{{ _php_free_envp */
static void _php_free_envp(php_process_env_t env, int is_persistent)
{
#ifndef PHP_WIN32
if (env.envarray) {
pefree(env.envarray, is_persistent);
}
#endif
if (env.envp) {
pefree(env.envp, is_persistent);
}
}
/* }}} */
/* {{{ proc_open_rsrc_dtor */
static void proc_open_rsrc_dtor(zend_rsrc_list_entry *rsrc TSRMLS_DC)
{
struct php_process_handle *proc = (struct php_process_handle*)rsrc->ptr;
int i;
#ifdef PHP_WIN32
DWORD wstatus;
#elif HAVE_SYS_WAIT_H
int wstatus;
pid_t wait_pid;
#endif
/* Close all handles to avoid a deadlock */
for (i = 0; i < proc->npipes; i++) {
if (proc->pipes[i] != 0) {
zend_list_delete(proc->pipes[i]);
proc->pipes[i] = 0;
}
}
#ifdef PHP_WIN32
WaitForSingleObject(proc->child, INFINITE);
GetExitCodeProcess(proc->child, &wstatus);
FG(pclose_ret) = wstatus;
#elif HAVE_SYS_WAIT_H
do {
wait_pid = waitpid(proc->child, &wstatus, 0);
} while (wait_pid == -1 && errno == EINTR);
if (wait_pid == -1)
FG(pclose_ret) = -1;
else {
if (WIFEXITED(wstatus))
wstatus = WEXITSTATUS(wstatus);
FG(pclose_ret) = wstatus;
}
#else
FG(pclose_ret) = -1;
#endif
_php_free_envp(proc->env, proc->is_persistent);
pefree(proc->command, proc->is_persistent);
pefree(proc, proc->is_persistent);
}
/* }}} */
/* {{{ php_make_safe_mode_command */
static int php_make_safe_mode_command(char *cmd, char **safecmd, int is_persistent TSRMLS_DC)
{
int lcmd, larg0, ldir, len, overflow_limit;
char *space, *sep, *arg0;
if (!PG(safe_mode)) {
*safecmd = pestrdup(cmd, is_persistent);
return SUCCESS;
}
lcmd = strlen(cmd);
ldir = strlen(PG(safe_mode_exec_dir));
len = lcmd + ldir + 2;
overflow_limit = len;
arg0 = emalloc(len);
strcpy(arg0, cmd);
space = strchr(arg0, ' ');
if (space) {
*space = '\0';
}
larg0 = strlen(arg0);
if (strstr(arg0, "..")) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "No '..' components allowed in path");
efree(arg0);
return FAILURE;
}
*safecmd = emalloc(len);
strcpy(*safecmd, PG(safe_mode_exec_dir));
overflow_limit -= ldir;
sep = strrchr(arg0, PHP_DIR_SEPARATOR);
if (sep) {
strcat(*safecmd, sep);
overflow_limit -= strlen(sep);
} else {
strcat(*safecmd, "/");
strcat(*safecmd, arg0);
overflow_limit -= larg0 + 1;
}
if (space) {
strncat(*safecmd, cmd + larg0, overflow_limit);
}
efree(arg0);
arg0 = php_escape_shell_cmd(*safecmd);
efree(*safecmd);
if (is_persistent) {
*safecmd = pestrdup(arg0, 1);
efree(arg0);
} else {
*safecmd = arg0;
}
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MINIT_FUNCTION(proc_open) */
PHP_MINIT_FUNCTION(proc_open)
{
le_proc_open = zend_register_list_destructors_ex(proc_open_rsrc_dtor, NULL, "process", module_number);
return SUCCESS;
}
/* }}} */
/* {{{ proto int proc_terminate(resource process [, long signal])
kill a process opened by proc_open */
PHP_FUNCTION(proc_terminate)
{
zval *zproc;
struct php_process_handle *proc;
long sig_no = SIGTERM;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r|l", &zproc, &sig_no) == FAILURE) {
RETURN_FALSE;
}
ZEND_FETCH_RESOURCE(proc, struct php_process_handle *, &zproc, -1, "process", le_proc_open);
#ifdef PHP_WIN32
TerminateProcess(proc->child, 255);
#else
kill(proc->child, sig_no);
#endif
zend_list_delete(Z_LVAL_P(zproc));
RETURN_LONG(FG(pclose_ret));
}
/* }}} */
/* {{{ proto int proc_close(resource process)
close a process opened by proc_open */
PHP_FUNCTION(proc_close)
{
zval *zproc;
struct php_process_handle *proc;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &zproc) == FAILURE) {
RETURN_FALSE;
}
ZEND_FETCH_RESOURCE(proc, struct php_process_handle *, &zproc, -1, "process", le_proc_open);
zend_list_delete(Z_LVAL_P(zproc));
RETURN_LONG(FG(pclose_ret));
}
/* }}} */
/* {{{ proto array proc_get_status(resource process)
get information about a process opened by proc_open */
PHP_FUNCTION(proc_get_status)
{
zval *zproc;
struct php_process_handle *proc;
#ifdef PHP_WIN32
DWORD wstatus;
#elif HAVE_SYS_WAIT_H
int wstatus;
pid_t wait_pid;
#endif
int running = 1, signaled = 0, stopped = 0;
int exitcode = -1, termsig = 0, stopsig = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &zproc) == FAILURE) {
RETURN_FALSE;
}
ZEND_FETCH_RESOURCE(proc, struct php_process_handle *, &zproc, -1, "process", le_proc_open);
array_init(return_value);
add_assoc_string(return_value, "command", proc->command, 1);
add_assoc_long(return_value, "pid", (long) proc->child);
#ifdef PHP_WIN32
GetExitCodeProcess(proc->child, &wstatus);
running = wstatus == STILL_ACTIVE;
exitcode == STILL_ACTIVE ? -1 : wstatus;
#elif HAVE_SYS_WAIT_H
errno = 0;
wait_pid = waitpid(proc->child, &wstatus, WNOHANG|WUNTRACED);
if (wait_pid == proc->child) {
if (WIFEXITED(wstatus)) {
running = 0;
exitcode = WEXITSTATUS(wstatus);
}
if (WIFSIGNALED(wstatus)) {
signaled = 1;
termsig = WTERMSIG(wstatus);
}
if (WIFSTOPPED(wstatus)) {
stopped = 1;
stopsig = WSTOPSIG(wstatus);
}
}
#endif
add_assoc_bool(return_value, "running", running);
add_assoc_bool(return_value, "signaled", signaled);
add_assoc_bool(return_value, "stopped", stopped);
add_assoc_long(return_value, "exitcode", exitcode);
add_assoc_long(return_value, "termsig", termsig);
add_assoc_long(return_value, "stopsig", stopsig);
}
/* }}} */
/* {{{ handy definitions for portability/readability */
#ifdef PHP_WIN32
# define pipe(pair) (CreatePipe(&pair[0], &pair[1], &security, 2048L) ? 0 : -1)
# define COMSPEC_NT "cmd.exe"
# define COMSPEC_9X "command.com"
static inline HANDLE dup_handle(HANDLE src, BOOL inherit, BOOL closeorig)
{
HANDLE copy, self = GetCurrentProcess();
if (!DuplicateHandle(self, src, self, &copy, 0, inherit, DUPLICATE_SAME_ACCESS |
(closeorig ? DUPLICATE_CLOSE_SOURCE : 0)))
return NULL;
return copy;
}
static inline HANDLE dup_fd_as_handle(int fd)
{
return dup_handle((HANDLE)_get_osfhandle(fd), TRUE, FALSE);
}
# define close_descriptor(fd) CloseHandle(fd)
#else
# define close_descriptor(fd) close(fd)
#endif
#define DESC_PIPE 1
#define DESC_FILE 2
#define DESC_PARENT_MODE_WRITE 8
struct php_proc_open_descriptor_item {
int index; /* desired fd number in child process */
php_file_descriptor_t parentend, childend; /* fds for pipes in parent/child */
int mode; /* mode for proc_open code */
int mode_flags; /* mode flags for opening fds */
};
/* }}} */
/* {{{ proto resource proc_open(string command, array descriptorspec, array &pipes [, string cwd [, array env [, array other_options]]])
Run a process with more control over it's file descriptors */
PHP_FUNCTION(proc_open)
{
char *command, *cwd=NULL;
long command_len, cwd_len;
zval *descriptorspec;
zval *pipes;
zval *environment = NULL;
zval *other_options = NULL;
php_process_env_t env;
int ndesc = 0;
int i;
zval **descitem = NULL;
HashPosition pos;
struct php_proc_open_descriptor_item descriptors[PHP_PROC_OPEN_MAX_DESCRIPTORS];
#ifdef PHP_WIN32
PROCESS_INFORMATION pi;
STARTUPINFO si;
BOOL newprocok;
SECURITY_ATTRIBUTES security;
char *command_with_cmd;
UINT old_error_mode;
#endif
php_process_id_t child;
struct php_process_handle *proc;
int is_persistent = 0; /* TODO: ensure that persistent procs will work */
int suppress_errors = 0;
#if PHP_CAN_DO_PTS
php_file_descriptor_t dev_ptmx = -1; /* master */
php_file_descriptor_t slave_pty = -1;
#endif
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "saz|s!a!a!", &command,
&command_len, &descriptorspec, &pipes, &cwd, &cwd_len, &environment,
&other_options) == FAILURE) {
RETURN_FALSE;
}
if (FAILURE == php_make_safe_mode_command(command, &command, is_persistent TSRMLS_CC)) {
RETURN_FALSE;
}
if (other_options) {
zval **item;
if (SUCCESS == zend_hash_find(Z_ARRVAL_P(other_options), "suppress_errors", sizeof("suppress_errors"), (void**)&item)) {
if (Z_TYPE_PP(item) == IS_BOOL && Z_BVAL_PP(item)) {
suppress_errors = 1;
}
}
}
command_len = strlen(command);
if (environment) {
env = _php_array_to_envp(environment, is_persistent TSRMLS_CC);
} else {
memset(&env, 0, sizeof(env));
}
memset(descriptors, 0, sizeof(descriptors));
#ifdef PHP_WIN32
/* we use this to allow the child to inherit handles */
memset(&security, 0, sizeof(security));
security.nLength = sizeof(security);
security.bInheritHandle = TRUE;
security.lpSecurityDescriptor = NULL;
#endif
/* walk the descriptor spec and set up files/pipes */
zend_hash_internal_pointer_reset_ex(Z_ARRVAL_P(descriptorspec), &pos);
while (zend_hash_get_current_data_ex(Z_ARRVAL_P(descriptorspec), (void **)&descitem, &pos) == SUCCESS) {
char *str_index;
ulong nindex;
zval **ztype;
str_index = NULL;
zend_hash_get_current_key_ex(Z_ARRVAL_P(descriptorspec), &str_index, NULL, &nindex, 0, &pos);
if (str_index) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "descriptor spec must be an integer indexed array");
goto exit_fail;
}
descriptors[ndesc].index = nindex;
if (Z_TYPE_PP(descitem) == IS_RESOURCE) {
/* should be a stream - try and dup the descriptor */
php_stream *stream;
int fd;
php_stream_from_zval(stream, descitem);
if (FAILURE == php_stream_cast(stream, PHP_STREAM_AS_FD, (void **)&fd, REPORT_ERRORS)) {
goto exit_fail;
}
#ifdef PHP_WIN32
descriptors[ndesc].childend = dup_fd_as_handle(fd);
if (descriptors[ndesc].childend == NULL) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "unable to dup File-Handle for descriptor %d", nindex);
goto exit_fail;
}
#else
descriptors[ndesc].childend = dup(fd);
if (descriptors[ndesc].childend < 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "unable to dup File-Handle for descriptor %ld - %s", nindex, strerror(errno));
goto exit_fail;
}
#endif
descriptors[ndesc].mode = DESC_FILE;
} else if (Z_TYPE_PP(descitem) != IS_ARRAY) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Descriptor item must be either an array or a File-Handle");
goto exit_fail;
} else {
if (zend_hash_index_find(Z_ARRVAL_PP(descitem), 0, (void **)&ztype) == SUCCESS) {
convert_to_string_ex(ztype);
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Missing handle qualifier in array");
goto exit_fail;
}
if (strcmp(Z_STRVAL_PP(ztype), "pipe") == 0) {
php_file_descriptor_t newpipe[2];
zval **zmode;
if (zend_hash_index_find(Z_ARRVAL_PP(descitem), 1, (void **)&zmode) == SUCCESS) {
convert_to_string_ex(zmode);
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Missing mode parameter for 'pipe'");
goto exit_fail;
}
descriptors[ndesc].mode = DESC_PIPE;
if (0 != pipe(newpipe)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "unable to create pipe %s", strerror(errno));
goto exit_fail;
}
if (strcmp(Z_STRVAL_PP(zmode), "w") != 0) {
descriptors[ndesc].parentend = newpipe[1];
descriptors[ndesc].childend = newpipe[0];
descriptors[ndesc].mode |= DESC_PARENT_MODE_WRITE;
} else {
descriptors[ndesc].parentend = newpipe[0];
descriptors[ndesc].childend = newpipe[1];
}
#ifdef PHP_WIN32
/* don't let the child inherit the parent side of the pipe */
descriptors[ndesc].parentend = dup_handle(descriptors[ndesc].parentend, FALSE, TRUE);
#endif
descriptors[ndesc].mode_flags = descriptors[ndesc].mode & DESC_PARENT_MODE_WRITE ? O_WRONLY : O_RDONLY;
#ifdef PHP_WIN32
if (Z_STRLEN_PP(zmode) >= 2 && Z_STRVAL_PP(zmode)[1] == 'b')
descriptors[ndesc].mode_flags |= O_BINARY;
#endif
} else if (strcmp(Z_STRVAL_PP(ztype), "file") == 0) {
zval **zfile, **zmode;
int fd;
php_stream *stream;
descriptors[ndesc].mode = DESC_FILE;
if (zend_hash_index_find(Z_ARRVAL_PP(descitem), 1, (void **)&zfile) == SUCCESS) {
convert_to_string_ex(zfile);
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Missing file name parameter for 'file'");
goto exit_fail;
}
if (zend_hash_index_find(Z_ARRVAL_PP(descitem), 2, (void **)&zmode) == SUCCESS) {
convert_to_string_ex(zmode);
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Missing mode parameter for 'file'");
goto exit_fail;
}
/* try a wrapper */
stream = php_stream_open_wrapper(Z_STRVAL_PP(zfile), Z_STRVAL_PP(zmode),
ENFORCE_SAFE_MODE|REPORT_ERRORS|STREAM_WILL_CAST, NULL);
/* force into an fd */
if (stream == NULL || FAILURE == php_stream_cast(stream,
PHP_STREAM_CAST_RELEASE|PHP_STREAM_AS_FD,
(void **)&fd, REPORT_ERRORS)) {
goto exit_fail;
}
#ifdef PHP_WIN32
descriptors[ndesc].childend = (HANDLE)_get_osfhandle(fd);
#else
descriptors[ndesc].childend = fd;
#endif
} else if (strcmp(Z_STRVAL_PP(ztype), "pty") == 0) {
#if PHP_CAN_DO_PTS
if (dev_ptmx == -1) {
/* open things up */
dev_ptmx = open("/dev/ptmx", O_RDWR);
if (dev_ptmx == -1) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "failed to open /dev/ptmx, errno %d", errno);
goto exit_fail;
}
grantpt(dev_ptmx);
unlockpt(dev_ptmx);
slave_pty = open(ptsname(dev_ptmx), O_RDWR);
if (slave_pty == -1) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "failed to open slave pty, errno %d", errno);
goto exit_fail;
}
}
descriptors[ndesc].mode = DESC_PIPE;
descriptors[ndesc].childend = dup(slave_pty);
descriptors[ndesc].parentend = dup(dev_ptmx);
descriptors[ndesc].mode_flags = O_RDWR;
#else
php_error_docref(NULL TSRMLS_CC, E_WARNING, "pty pseudo terminal is not support on this system");
goto exit_fail;
#endif
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s is not a valid descriptor spec/mode", Z_STRVAL_PP(ztype));
goto exit_fail;
}
}
zend_hash_move_forward_ex(Z_ARRVAL_P(descriptorspec), &pos);
if (++ndesc == PHP_PROC_OPEN_MAX_DESCRIPTORS)
break;
}
#ifdef PHP_WIN32
memset(&si, 0, sizeof(si));
si.cb = sizeof(si);
si.dwFlags = STARTF_USESTDHANDLES;
si.hStdInput = GetStdHandle(STD_INPUT_HANDLE);
si.hStdOutput = GetStdHandle(STD_OUTPUT_HANDLE);
si.hStdError = GetStdHandle(STD_ERROR_HANDLE);
/* redirect stdin/stdout/stderr if requested */
for (i = 0; i < ndesc; i++) {
switch(descriptors[i].index) {
case 0:
si.hStdInput = descriptors[i].childend;
break;
case 1:
si.hStdOutput = descriptors[i].childend;
break;
case 2:
si.hStdError = descriptors[i].childend;
break;
}
}
memset(&pi, 0, sizeof(pi));
command_with_cmd = emalloc(command_len + sizeof(COMSPEC_9X) + 1 + sizeof(" /c "));
sprintf(command_with_cmd, "%s /c %s", GetVersion() < 0x80000000 ? COMSPEC_NT : COMSPEC_9X, command);
if (suppress_errors) {
old_error_mode = SetErrorMode(SEM_FAILCRITICALERRORS|SEM_NOGPFAULTERRORBOX);
}
newprocok = CreateProcess(NULL, command_with_cmd, &security, &security, TRUE, NORMAL_PRIORITY_CLASS, env.envp, cwd, &si, &pi);
if (suppress_errors) {
SetErrorMode(old_error_mode);
}
efree(command_with_cmd);
if (FALSE == newprocok) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "CreateProcess failed");
goto exit_fail;
}
child = pi.hProcess;
CloseHandle(pi.hThread);
#elif HAVE_FORK
/* the unix way */
child = fork();
if (child == 0) {
/* this is the child process */
#if PHP_CAN_DO_PTS
if (dev_ptmx >= 0) {
int my_pid = getpid();
/* detach from original tty. Might only need this if isatty(0) is true */
ioctl(0,TIOCNOTTY,NULL);
/* become process group leader */
setpgid(my_pid, my_pid);
tcsetpgrp(0, my_pid);
}
#endif
/* close those descriptors that we just opened for the parent stuff,
* dup new descriptors into required descriptors and close the original
* cruft */
for (i = 0; i < ndesc; i++) {
switch (descriptors[i].mode & ~DESC_PARENT_MODE_WRITE) {
case DESC_PIPE:
close(descriptors[i].parentend);
break;
}
if (dup2(descriptors[i].childend, descriptors[i].index) < 0)
perror("dup2");
if (descriptors[i].childend != descriptors[i].index)
close(descriptors[i].childend);
}
#if PHP_CAN_DO_PTS
if (dev_ptmx >= 0) {
close(dev_ptmx);
close(slave_pty);
}
#endif
if (cwd) {
chdir(cwd);
}
if (env.envarray) {
execle("/bin/sh", "sh", "-c", command, NULL, env.envarray);
} else {
execl("/bin/sh", "sh", "-c", command, NULL);
}
_exit(127);
} else if (child < 0) {
/* failed to fork() */
/* clean up all the descriptors */
for (i = 0; i < ndesc; i++) {
close(descriptors[i].childend);
close(descriptors[i].parentend);
}
php_error_docref(NULL TSRMLS_CC, E_WARNING, "fork failed - %s", strerror(errno));
goto exit_fail;
}
#else
# error You lose (configure should not have let you get here)
#endif
/* we forked/spawned and this is the parent */
proc = (struct php_process_handle*)pemalloc(sizeof(struct php_process_handle), is_persistent);
proc->is_persistent = is_persistent;
proc->command = command;
proc->npipes = ndesc;
proc->child = child;
proc->env = env;
if (pipes != NULL) {
zval_dtor(pipes);
}
array_init(pipes);
#if PHP_CAN_DO_PTS
if (dev_ptmx >= 0) {
close(dev_ptmx);
close(slave_pty);
}
#endif
/* clean up all the child ends and then open streams on the parent
* ends, where appropriate */
for (i = 0; i < ndesc; i++) {
char *mode_string=NULL;
php_stream *stream = NULL;
close_descriptor(descriptors[i].childend);
switch (descriptors[i].mode & ~DESC_PARENT_MODE_WRITE) {
case DESC_PIPE:
switch(descriptors[i].mode_flags) {
#ifdef PHP_WIN32
case O_WRONLY|O_BINARY:
mode_string = "wb";
break;
case O_RDONLY|O_BINARY:
mode_string = "rb";
break;
#endif
case O_WRONLY:
mode_string = "w";
break;
case O_RDONLY:
mode_string = "r";
break;
case O_RDWR:
mode_string = "r+";
break;
}
#ifdef PHP_WIN32
stream = php_stream_fopen_from_fd(_open_osfhandle((long)descriptors[i].parentend,
descriptors[i].mode_flags), mode_string, NULL);
#else
stream = php_stream_fopen_from_fd(descriptors[i].parentend, mode_string, NULL);
#endif
if (stream) {
zval *retfp;
/* nasty hack; don't copy it */
stream->flags |= PHP_STREAM_FLAG_NO_SEEK;
MAKE_STD_ZVAL(retfp);
php_stream_to_zval(stream, retfp);
add_index_zval(pipes, descriptors[i].index, retfp);
proc->pipes[i] = Z_LVAL_P(retfp);
}
break;
default:
proc->pipes[i] = 0;
}
}
ZEND_REGISTER_RESOURCE(return_value, proc, le_proc_open);
return;
exit_fail:
_php_free_envp(env, is_persistent);
pefree(command, is_persistent);
#if PHP_CAN_DO_PTS
if (dev_ptmx >= 0) {
close(dev_ptmx);
}
if (slave_pty >= 0) {
close(slave_pty);
}
#endif
RETURN_FALSE;
}
/* }}} */
#endif /* PHP_CAN_SUPPORT_PROC_OPEN */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
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