file.c

/*
   +----------------------------------------------------------------------+
   | PHP Version 7                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) 1997-2018 The PHP Group                                |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 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_01.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.               |
   +----------------------------------------------------------------------+
   | Authors: Rasmus Lerdorf <rasmus@php.net>                             |
   |          Stig Bakken <ssb@php.net>                                   |
   |          Andi Gutmans <andi@zend.com>                                |
   |          Zeev Suraski <zeev@zend.com>                                |
   | PHP 4.0 patches by Thies C. Arntzen (thies@thieso.net)               |
   | PHP streams by Wez Furlong (wez@thebrainroom.com)                    |
   +----------------------------------------------------------------------+
*/

/* $Id$ */

/* Synced with php 3.0 revision 1.218 1999-06-16 [ssb] */

/* {{{ includes */

#include "php.h"
#include "php_globals.h"
#include "ext/standard/flock_compat.h"
#include "ext/standard/exec.h"
#include "ext/standard/php_filestat.h"
#include "php_open_temporary_file.h"
#include "ext/standard/basic_functions.h"
#include "php_ini.h"
#include "zend_smart_str.h"

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#ifdef PHP_WIN32
# include <io.h>
# define O_RDONLY _O_RDONLY
# include "win32/param.h"
# include "win32/winutil.h"
# include "win32/fnmatch.h"
#else
# if HAVE_SYS_PARAM_H
#  include <sys/param.h>
# endif
# if HAVE_SYS_SELECT_H
#  include <sys/select.h>
# endif
# if defined(NETWARE) && defined(USE_WINSOCK)
#  include <novsock2.h>
# else
#  include <sys/socket.h>
#  include <netinet/in.h>
#  include <netdb.h>
# endif
# if HAVE_ARPA_INET_H
#  include <arpa/inet.h>
# endif
#endif

#include "ext/standard/head.h"
#include "php_string.h"
#include "file.h"

#if HAVE_PWD_H
# ifdef PHP_WIN32
#  include "win32/pwd.h"
# else
#  include <pwd.h>
# endif
#endif

#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif

#include "fsock.h"
#include "fopen_wrappers.h"
#include "streamsfuncs.h"
#include "php_globals.h"

#ifdef HAVE_SYS_FILE_H
# include <sys/file.h>
#endif

#if MISSING_FCLOSE_DECL
extern int fclose(FILE *);
#endif

#ifdef HAVE_SYS_MMAN_H
# include <sys/mman.h>
#endif

#include "scanf.h"
#include "zend_API.h"

#ifdef ZTS
int file_globals_id;
#else
php_file_globals file_globals;
#endif

#if defined(HAVE_FNMATCH) && !defined(PHP_WIN32)
# ifndef _GNU_SOURCE
#  define _GNU_SOURCE
# endif
# include <fnmatch.h>
#endif

#ifdef HAVE_WCHAR_H
# include <wchar.h>
#endif

/* }}} */

#define PHP_STREAM_TO_ZVAL(stream, arg) \
	ZEND_ASSERT(Z_TYPE_P(arg) == IS_RESOURCE); \
	php_stream_from_res(stream, Z_RES_P(arg));

/* {{{ ZTS-stuff / Globals / Prototypes */

/* sharing globals is *evil* */
static int le_stream_context = FAILURE;

PHPAPI int php_le_stream_context(void)
{
	return le_stream_context;
}
/* }}} */

/* {{{ Module-Stuff
*/
static ZEND_RSRC_DTOR_FUNC(file_context_dtor)
{
	php_stream_context *context = (php_stream_context*)res->ptr;
	if (Z_TYPE(context->options) != IS_UNDEF) {
		zval_ptr_dtor(&context->options);
		ZVAL_UNDEF(&context->options);
	}
	php_stream_context_free(context);
}

static void file_globals_ctor(php_file_globals *file_globals_p)
{
	memset(file_globals_p, 0, sizeof(php_file_globals));
	file_globals_p->def_chunk_size = PHP_SOCK_CHUNK_SIZE;
}

static void file_globals_dtor(php_file_globals *file_globals_p)
{
#if defined(HAVE_GETHOSTBYNAME_R)
	if (file_globals_p->tmp_host_buf) {
		free(file_globals_p->tmp_host_buf);
	}
#endif
}

PHP_INI_BEGIN()
	STD_PHP_INI_ENTRY("user_agent", NULL, PHP_INI_ALL, OnUpdateString, user_agent, php_file_globals, file_globals)
	STD_PHP_INI_ENTRY("from", NULL, PHP_INI_ALL, OnUpdateString, from_address, php_file_globals, file_globals)
	STD_PHP_INI_ENTRY("default_socket_timeout", "60", PHP_INI_ALL, OnUpdateLong, default_socket_timeout, php_file_globals, file_globals)
	STD_PHP_INI_ENTRY("auto_detect_line_endings", "0", PHP_INI_ALL, OnUpdateLong, auto_detect_line_endings, php_file_globals, file_globals)
PHP_INI_END()

PHP_MINIT_FUNCTION(file)
{
	le_stream_context = zend_register_list_destructors_ex(file_context_dtor, NULL, "stream-context", module_number);

#ifdef ZTS
	ts_allocate_id(&file_globals_id, sizeof(php_file_globals), (ts_allocate_ctor) file_globals_ctor, (ts_allocate_dtor) file_globals_dtor);
#else
	file_globals_ctor(&file_globals);
#endif

	REGISTER_INI_ENTRIES();

	REGISTER_LONG_CONSTANT("SEEK_SET", SEEK_SET, CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("SEEK_CUR", SEEK_CUR, CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("SEEK_END", SEEK_END, CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("LOCK_SH", PHP_LOCK_SH, CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("LOCK_EX", PHP_LOCK_EX, CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("LOCK_UN", PHP_LOCK_UN, CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("LOCK_NB", PHP_LOCK_NB, CONST_CS | CONST_PERSISTENT);

	REGISTER_LONG_CONSTANT("STREAM_NOTIFY_CONNECT",			PHP_STREAM_NOTIFY_CONNECT,			CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_NOTIFY_AUTH_REQUIRED",	PHP_STREAM_NOTIFY_AUTH_REQUIRED,	CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_NOTIFY_AUTH_RESULT",		PHP_STREAM_NOTIFY_AUTH_RESULT,		CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_NOTIFY_MIME_TYPE_IS",	PHP_STREAM_NOTIFY_MIME_TYPE_IS,		CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_NOTIFY_FILE_SIZE_IS",	PHP_STREAM_NOTIFY_FILE_SIZE_IS,		CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_NOTIFY_REDIRECTED",		PHP_STREAM_NOTIFY_REDIRECTED,		CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_NOTIFY_PROGRESS",		PHP_STREAM_NOTIFY_PROGRESS,			CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_NOTIFY_FAILURE",			PHP_STREAM_NOTIFY_FAILURE,			CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_NOTIFY_COMPLETED",		PHP_STREAM_NOTIFY_COMPLETED,		CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_NOTIFY_RESOLVE",			PHP_STREAM_NOTIFY_RESOLVE,			CONST_CS | CONST_PERSISTENT);

	REGISTER_LONG_CONSTANT("STREAM_NOTIFY_SEVERITY_INFO",	PHP_STREAM_NOTIFY_SEVERITY_INFO,	CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_NOTIFY_SEVERITY_WARN",	PHP_STREAM_NOTIFY_SEVERITY_WARN,	CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_NOTIFY_SEVERITY_ERR",	PHP_STREAM_NOTIFY_SEVERITY_ERR,		CONST_CS | CONST_PERSISTENT);

	REGISTER_LONG_CONSTANT("STREAM_FILTER_READ",			PHP_STREAM_FILTER_READ,				CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_FILTER_WRITE",			PHP_STREAM_FILTER_WRITE,			CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_FILTER_ALL",				PHP_STREAM_FILTER_ALL,				CONST_CS | CONST_PERSISTENT);

	REGISTER_LONG_CONSTANT("STREAM_CLIENT_PERSISTENT",		PHP_STREAM_CLIENT_PERSISTENT,		CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CLIENT_ASYNC_CONNECT",	PHP_STREAM_CLIENT_ASYNC_CONNECT,	CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CLIENT_CONNECT",			PHP_STREAM_CLIENT_CONNECT,	CONST_CS | CONST_PERSISTENT);

	REGISTER_LONG_CONSTANT("STREAM_CRYPTO_METHOD_ANY_CLIENT",	STREAM_CRYPTO_METHOD_ANY_CLIENT,	CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CRYPTO_METHOD_SSLv2_CLIENT",	STREAM_CRYPTO_METHOD_SSLv2_CLIENT,	CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CRYPTO_METHOD_SSLv3_CLIENT",	STREAM_CRYPTO_METHOD_SSLv3_CLIENT,	CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CRYPTO_METHOD_SSLv23_CLIENT",	STREAM_CRYPTO_METHOD_SSLv23_CLIENT,	CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CRYPTO_METHOD_TLS_CLIENT",	STREAM_CRYPTO_METHOD_TLS_CLIENT,	CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT",	STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT,	CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT",	STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT,	CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT",	STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT,	CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CRYPTO_METHOD_ANY_SERVER",	STREAM_CRYPTO_METHOD_ANY_SERVER,	CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CRYPTO_METHOD_SSLv2_SERVER",	STREAM_CRYPTO_METHOD_SSLv2_SERVER,	CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CRYPTO_METHOD_SSLv3_SERVER",	STREAM_CRYPTO_METHOD_SSLv3_SERVER,	CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CRYPTO_METHOD_SSLv23_SERVER",	STREAM_CRYPTO_METHOD_SSLv23_SERVER,	CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CRYPTO_METHOD_TLS_SERVER",	STREAM_CRYPTO_METHOD_TLS_SERVER,	CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CRYPTO_METHOD_TLSv1_0_SERVER",	STREAM_CRYPTO_METHOD_TLSv1_0_SERVER,	CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CRYPTO_METHOD_TLSv1_1_SERVER",	STREAM_CRYPTO_METHOD_TLSv1_1_SERVER,	CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_CRYPTO_METHOD_TLSv1_2_SERVER",	STREAM_CRYPTO_METHOD_TLSv1_2_SERVER,	CONST_CS|CONST_PERSISTENT);

	REGISTER_LONG_CONSTANT("STREAM_SHUT_RD",	STREAM_SHUT_RD,		CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_SHUT_WR",	STREAM_SHUT_WR,		CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_SHUT_RDWR",	STREAM_SHUT_RDWR,	CONST_CS|CONST_PERSISTENT);

#ifdef PF_INET
	REGISTER_LONG_CONSTANT("STREAM_PF_INET", PF_INET, CONST_CS|CONST_PERSISTENT);
#elif defined(AF_INET)
	REGISTER_LONG_CONSTANT("STREAM_PF_INET", AF_INET, CONST_CS|CONST_PERSISTENT);
#endif

#if HAVE_IPV6
# ifdef PF_INET6
	REGISTER_LONG_CONSTANT("STREAM_PF_INET6", PF_INET6, CONST_CS|CONST_PERSISTENT);
# elif defined(AF_INET6)
	REGISTER_LONG_CONSTANT("STREAM_PF_INET6", AF_INET6, CONST_CS|CONST_PERSISTENT);
# endif
#endif

#ifdef PF_UNIX
	REGISTER_LONG_CONSTANT("STREAM_PF_UNIX", PF_UNIX, CONST_CS|CONST_PERSISTENT);
#elif defined(AF_UNIX)
	REGISTER_LONG_CONSTANT("STREAM_PF_UNIX", AF_UNIX, CONST_CS|CONST_PERSISTENT);
#endif

#ifdef IPPROTO_IP
	/* most people will use this one when calling socket() or socketpair() */
	REGISTER_LONG_CONSTANT("STREAM_IPPROTO_IP", IPPROTO_IP, CONST_CS|CONST_PERSISTENT);
#endif

#if defined(IPPROTO_TCP) || defined(PHP_WIN32)
	REGISTER_LONG_CONSTANT("STREAM_IPPROTO_TCP", IPPROTO_TCP, CONST_CS|CONST_PERSISTENT);
#endif

#if defined(IPPROTO_UDP) || defined(PHP_WIN32)
	REGISTER_LONG_CONSTANT("STREAM_IPPROTO_UDP", IPPROTO_UDP, CONST_CS|CONST_PERSISTENT);
#endif

#if defined(IPPROTO_ICMP) || defined(PHP_WIN32)
	REGISTER_LONG_CONSTANT("STREAM_IPPROTO_ICMP", IPPROTO_ICMP, CONST_CS|CONST_PERSISTENT);
#endif

#if defined(IPPROTO_RAW) || defined(PHP_WIN32)
	REGISTER_LONG_CONSTANT("STREAM_IPPROTO_RAW", IPPROTO_RAW, CONST_CS|CONST_PERSISTENT);
#endif

	REGISTER_LONG_CONSTANT("STREAM_SOCK_STREAM", SOCK_STREAM, CONST_CS|CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_SOCK_DGRAM", SOCK_DGRAM, CONST_CS|CONST_PERSISTENT);

#ifdef SOCK_RAW
	REGISTER_LONG_CONSTANT("STREAM_SOCK_RAW", SOCK_RAW, CONST_CS|CONST_PERSISTENT);
#endif

#ifdef SOCK_SEQPACKET
	REGISTER_LONG_CONSTANT("STREAM_SOCK_SEQPACKET", SOCK_SEQPACKET, CONST_CS|CONST_PERSISTENT);
#endif

#ifdef SOCK_RDM
	REGISTER_LONG_CONSTANT("STREAM_SOCK_RDM", SOCK_RDM, CONST_CS|CONST_PERSISTENT);
#endif

	REGISTER_LONG_CONSTANT("STREAM_PEEK", STREAM_PEEK, CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_OOB",  STREAM_OOB, CONST_CS | CONST_PERSISTENT);

	REGISTER_LONG_CONSTANT("STREAM_SERVER_BIND",			STREAM_XPORT_BIND,					CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("STREAM_SERVER_LISTEN",			STREAM_XPORT_LISTEN,				CONST_CS | CONST_PERSISTENT);

	REGISTER_LONG_CONSTANT("FILE_USE_INCLUDE_PATH",			PHP_FILE_USE_INCLUDE_PATH,			CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("FILE_IGNORE_NEW_LINES",			PHP_FILE_IGNORE_NEW_LINES,			CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("FILE_SKIP_EMPTY_LINES",			PHP_FILE_SKIP_EMPTY_LINES,			CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("FILE_APPEND",					PHP_FILE_APPEND,					CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("FILE_NO_DEFAULT_CONTEXT",		PHP_FILE_NO_DEFAULT_CONTEXT,		CONST_CS | CONST_PERSISTENT);

	REGISTER_LONG_CONSTANT("FILE_TEXT",						0,									CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("FILE_BINARY",					0,									CONST_CS | CONST_PERSISTENT);

#ifdef HAVE_FNMATCH
	REGISTER_LONG_CONSTANT("FNM_NOESCAPE", FNM_NOESCAPE, CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("FNM_PATHNAME", FNM_PATHNAME, CONST_CS | CONST_PERSISTENT);
	REGISTER_LONG_CONSTANT("FNM_PERIOD",   FNM_PERIOD,   CONST_CS | CONST_PERSISTENT);
# ifdef FNM_CASEFOLD /* a GNU extension */ /* TODO emulate if not available */
	REGISTER_LONG_CONSTANT("FNM_CASEFOLD", FNM_CASEFOLD, CONST_CS | CONST_PERSISTENT);
# endif
#endif

	return SUCCESS;
}
/* }}} */

PHP_MSHUTDOWN_FUNCTION(file) /* {{{ */
{
#ifndef ZTS
	file_globals_dtor(&file_globals);
#endif
	return SUCCESS;
}
/* }}} */

static int flock_values[] = { LOCK_SH, LOCK_EX, LOCK_UN };

/* {{{ proto bool flock(resource fp, int operation [, int &wouldblock])
   Portable file locking */
PHP_FUNCTION(flock)
{
	zval *res, *wouldblock = NULL;
	int act;
	php_stream *stream;
	zend_long operation = 0;

	if (zend_parse_parameters(ZEND_NUM_ARGS(), "rl|z/", &res, &operation, &wouldblock) == FAILURE) {
		return;
	}

	PHP_STREAM_TO_ZVAL(stream, res);

	act = operation & 3;
	if (act < 1 || act > 3) {
		php_error_docref(NULL, E_WARNING, "Illegal operation argument");
		RETURN_FALSE;
	}

	if (wouldblock) {
		zval_dtor(wouldblock);
		ZVAL_LONG(wouldblock, 0);
	}

	/* flock_values contains all possible actions if (operation & 4) we won't block on the lock */
	act = flock_values[act - 1] | (operation & PHP_LOCK_NB ? LOCK_NB : 0);
	if (php_stream_lock(stream, act)) {
		if (operation && errno == EWOULDBLOCK && wouldblock) {
			ZVAL_LONG(wouldblock, 1);
		}
		RETURN_FALSE;
	}
	RETURN_TRUE;
}
/* }}} */

#define PHP_META_UNSAFE ".\\+*?[^]$() "

/* {{{ proto array get_meta_tags(string filename [, bool use_include_path])
   Extracts all meta tag content attributes from a file and returns an array */
PHP_FUNCTION(get_meta_tags)
{
	char *filename;
	size_t filename_len;
	zend_bool use_include_path = 0;
	int in_tag = 0, done = 0;
	int looking_for_val = 0, have_name = 0, have_content = 0;
	int saw_name = 0, saw_content = 0;
	char *name = NULL, *value = NULL, *temp = NULL;
	php_meta_tags_token tok, tok_last;
	php_meta_tags_data md;

	/* Initiailize our structure */
	memset(&md, 0, sizeof(md));

	/* Parse arguments */
	if (zend_parse_parameters(ZEND_NUM_ARGS(), "p|b", &filename, &filename_len, &use_include_path) == FAILURE) {
		return;
	}

	md.stream = php_stream_open_wrapper(filename, "rb",
			(use_include_path ? USE_PATH : 0) | REPORT_ERRORS,
			NULL);
	if (!md.stream)	{
		RETURN_FALSE;
	}

	array_init(return_value);

	tok_last = TOK_EOF;

	while (!done && (tok = php_next_meta_token(&md)) != TOK_EOF) {
		if (tok == TOK_ID) {
			if (tok_last == TOK_OPENTAG) {
				md.in_meta = !strcasecmp("meta", md.token_data);
			} else if (tok_last == TOK_SLASH && in_tag) {
				if (strcasecmp("head", md.token_data) == 0) {
					/* We are done here! */
					done = 1;
				}
			} else if (tok_last == TOK_EQUAL && looking_for_val) {
				if (saw_name) {
					if (name) efree(name);
					/* Get the NAME attr (Single word attr, non-quoted) */
					temp = name = estrndup(md.token_data, md.token_len);

					while (temp && *temp) {
						if (strchr(PHP_META_UNSAFE, *temp)) {
							*temp = '_';
						}
						temp++;
					}

					have_name = 1;
				} else if (saw_content) {
					if (value) efree(value);
					value = estrndup(md.token_data, md.token_len);
					have_content = 1;
				}

				looking_for_val = 0;
			} else {
				if (md.in_meta) {
					if (strcasecmp("name", md.token_data) == 0) {
						saw_name = 1;
						saw_content = 0;
						looking_for_val = 1;
					} else if (strcasecmp("content", md.token_data) == 0) {
						saw_name = 0;
						saw_content = 1;
						looking_for_val = 1;
					}
				}
			}
		} else if (tok == TOK_STRING && tok_last == TOK_EQUAL && looking_for_val) {
			if (saw_name) {
				if (name) efree(name);
				/* Get the NAME attr (Quoted single/double) */
				temp = name = estrndup(md.token_data, md.token_len);

				while (temp && *temp) {
					if (strchr(PHP_META_UNSAFE, *temp)) {
						*temp = '_';
					}
					temp++;
				}

				have_name = 1;
			} else if (saw_content) {
				if (value) efree(value);
				value = estrndup(md.token_data, md.token_len);
				have_content = 1;
			}

			looking_for_val = 0;
		} else if (tok == TOK_OPENTAG) {
			if (looking_for_val) {
				looking_for_val = 0;
				have_name = saw_name = 0;
				have_content = saw_content = 0;
			}
			in_tag = 1;
		} else if (tok == TOK_CLOSETAG) {
			if (have_name) {
				/* For BC */
				php_strtolower(name, strlen(name));
				if (have_content) {
					add_assoc_string(return_value, name, value);
				} else {
					add_assoc_string(return_value, name, "");
				}

				efree(name);
				if (value) efree(value);
			} else if (have_content) {
				efree(value);
			}

			name = value = NULL;

			/* Reset all of our flags */
			in_tag = looking_for_val = 0;
			have_name = saw_name = 0;
			have_content = saw_content = 0;
			md.in_meta = 0;
		}

		tok_last = tok;

		if (md.token_data)
			efree(md.token_data);

		md.token_data = NULL;
	}

	if (value) efree(value);
	if (name) efree(name);
	php_stream_close(md.stream);
}
/* }}} */

/* {{{ proto string file_get_contents(string filename [, bool use_include_path [, resource context [, long offset [, long maxlen]]]])
   Read the entire file into a string */
PHP_FUNCTION(file_get_contents)
{
	char *filename;
	size_t filename_len;
	zend_bool use_include_path = 0;
	php_stream *stream;
	zend_long offset = 0;
	zend_long maxlen = (ssize_t) PHP_STREAM_COPY_ALL;
	zval *zcontext = NULL;
	php_stream_context *context = NULL;
	zend_string *contents;

	/* Parse arguments */
	if (zend_parse_parameters(ZEND_NUM_ARGS(), "p|br!ll", &filename, &filename_len, &use_include_path, &zcontext, &offset, &maxlen) == FAILURE) {
		return;
	}

	if (ZEND_NUM_ARGS() == 5 && maxlen < 0) {
		php_error_docref(NULL, E_WARNING, "length must be greater than or equal to zero");
		RETURN_FALSE;
	}

	context = php_stream_context_from_zval(zcontext, 0);

	stream = php_stream_open_wrapper_ex(filename, "rb",
				(use_include_path ? USE_PATH : 0) | REPORT_ERRORS,
				NULL, context);
	if (!stream) {
		RETURN_FALSE;
	}

	if (offset != 0 && php_stream_seek(stream, offset, ((offset > 0) ? SEEK_SET : SEEK_END)) < 0) {
		php_error_docref(NULL, E_WARNING, "Failed to seek to position " ZEND_LONG_FMT " in the stream", offset);
		php_stream_close(stream);
		RETURN_FALSE;
	}

	if (maxlen > INT_MAX) {
		php_error_docref(NULL, E_WARNING, "maxlen truncated from " ZEND_LONG_FMT " to %d bytes", maxlen, INT_MAX);
		maxlen = INT_MAX;
	}
	if ((contents = php_stream_copy_to_mem(stream, maxlen, 0)) != NULL) {
		RETVAL_STR(contents);
	} else {
		RETVAL_EMPTY_STRING();
	}

	php_stream_close(stream);
}
/* }}} */

/* {{{ proto int file_put_contents(string file, mixed data [, int flags [, resource context]])
   Write/Create a file with contents data and return the number of bytes written */
PHP_FUNCTION(file_put_contents)
{
	php_stream *stream;
	char *filename;
	size_t filename_len;
	zval *data;
	size_t numbytes = 0;
	zend_long flags = 0;
	zval *zcontext = NULL;
	php_stream_context *context = NULL;
	php_stream *srcstream = NULL;
	char mode[3] = "wb";

	if (zend_parse_parameters(ZEND_NUM_ARGS(), "pz/|lr!", &filename, &filename_len, &data, &flags, &zcontext) == FAILURE) {
		return;
	}

	if (Z_TYPE_P(data) == IS_RESOURCE) {
		php_stream_from_zval(srcstream, data);
	}

	context = php_stream_context_from_zval(zcontext, flags & PHP_FILE_NO_DEFAULT_CONTEXT);

	if (flags & PHP_FILE_APPEND) {
		mode[0] = 'a';
	} else if (flags & LOCK_EX) {
		/* check to make sure we are dealing with a regular file */
		if (php_memnstr(filename, "://", sizeof("://") - 1, filename + filename_len)) {
			if (strncasecmp(filename, "file://", sizeof("file://") - 1)) {
				php_error_docref(NULL, E_WARNING, "Exclusive locks may only be set for regular files");
				RETURN_FALSE;
			}
		}
		mode[0] = 'c';
	}
	mode[2] = '\0';

	stream = php_stream_open_wrapper_ex(filename, mode, ((flags & PHP_FILE_USE_INCLUDE_PATH) ? USE_PATH : 0) | REPORT_ERRORS, NULL, context);
	if (stream == NULL) {
		RETURN_FALSE;
	}

	if (flags & LOCK_EX && (!php_stream_supports_lock(stream) || php_stream_lock(stream, LOCK_EX))) {
		php_stream_close(stream);
		php_error_docref(NULL, E_WARNING, "Exclusive locks are not supported for this stream");
		RETURN_FALSE;
	}

	if (mode[0] == 'c') {
		php_stream_truncate_set_size(stream, 0);
	}

	switch (Z_TYPE_P(data)) {
		case IS_RESOURCE: {
			size_t len;
			if (php_stream_copy_to_stream_ex(srcstream, stream, PHP_STREAM_COPY_ALL, &len) != SUCCESS) {
				numbytes = -1;
			} else {
				if (len > ZEND_LONG_MAX) {
					php_error_docref(NULL, E_WARNING, "content truncated from %zu to " ZEND_LONG_FMT " bytes", len, ZEND_LONG_MAX);
					len = ZEND_LONG_MAX;
				}
				numbytes = len;
			}
			break;
		}
		case IS_NULL:
		case IS_LONG:
		case IS_DOUBLE:
		case IS_FALSE:
		case IS_TRUE:
			convert_to_string_ex(data);

		case IS_STRING:
			if (Z_STRLEN_P(data)) {
				numbytes = php_stream_write(stream, Z_STRVAL_P(data), Z_STRLEN_P(data));
				if (numbytes != Z_STRLEN_P(data)) {
					php_error_docref(NULL, E_WARNING, "Only "ZEND_LONG_FMT" of %zd bytes written, possibly out of free disk space", numbytes, Z_STRLEN_P(data));
					numbytes = -1;
				}
			}
			break;

		case IS_ARRAY:
			if (zend_hash_num_elements(Z_ARRVAL_P(data))) {
				size_t bytes_written;
				zval *tmp;

				ZEND_HASH_FOREACH_VAL(Z_ARRVAL_P(data), tmp) {
					zend_string *str = zval_get_string(tmp);
					if (ZSTR_LEN(str)) {
						numbytes += ZSTR_LEN(str);
						bytes_written = php_stream_write(stream, ZSTR_VAL(str), ZSTR_LEN(str));
						if (bytes_written != ZSTR_LEN(str)) {
							php_error_docref(NULL, E_WARNING, "Failed to write %zd bytes to %s", ZSTR_LEN(str), filename);
							zend_string_release(str);
							numbytes = -1;
							break;
						}
					}
					zend_string_release(str);
				} ZEND_HASH_FOREACH_END();
			}
			break;

		case IS_OBJECT:
			if (Z_OBJ_HT_P(data) != NULL) {
				zval out;

				if (zend_std_cast_object_tostring(data, &out, IS_STRING) == SUCCESS) {
					numbytes = php_stream_write(stream, Z_STRVAL(out), Z_STRLEN(out));
					if (numbytes != Z_STRLEN(out)) {
						php_error_docref(NULL, E_WARNING, "Only "ZEND_LONG_FMT" of %zd bytes written, possibly out of free disk space", numbytes, Z_STRLEN(out));
						numbytes = -1;
					}
					zval_dtor(&out);
					break;
				}
			}
		default:
			numbytes = -1;
			break;
	}
	php_stream_close(stream);

	if (numbytes == (size_t)-1) {
		RETURN_FALSE;
	}

	RETURN_LONG(numbytes);
}
/* }}} */

#define PHP_FILE_BUF_SIZE	80

/* {{{ proto array file(string filename [, int flags[, resource context]])
   Read entire file into an array */
PHP_FUNCTION(file)
{
	char *filename;
	size_t filename_len;
	char *p, *s, *e;
	register int i = 0;
	char eol_marker = '\n';
	zend_long flags = 0;
	zend_bool use_include_path;
	zend_bool include_new_line;
	zend_bool skip_blank_lines;
	php_stream *stream;
	zval *zcontext = NULL;
	php_stream_context *context = NULL;
	zend_string *target_buf;

	/* Parse arguments */
	if (zend_parse_parameters(ZEND_NUM_ARGS(), "p|lr!", &filename, &filename_len, &flags, &zcontext) == FAILURE) {
		return;
	}
	if (flags < 0 || flags > (PHP_FILE_USE_INCLUDE_PATH | PHP_FILE_IGNORE_NEW_LINES | PHP_FILE_SKIP_EMPTY_LINES | PHP_FILE_NO_DEFAULT_CONTEXT)) {
		php_error_docref(NULL, E_WARNING, "'" ZEND_LONG_FMT "' flag is not supported", flags);
		RETURN_FALSE;
	}

	use_include_path = flags & PHP_FILE_USE_INCLUDE_PATH;
	include_new_line = !(flags & PHP_FILE_IGNORE_NEW_LINES);
	skip_blank_lines = flags & PHP_FILE_SKIP_EMPTY_LINES;

	context = php_stream_context_from_zval(zcontext, flags & PHP_FILE_NO_DEFAULT_CONTEXT);

	stream = php_stream_open_wrapper_ex(filename, "rb", (use_include_path ? USE_PATH : 0) | REPORT_ERRORS, NULL, context);
	if (!stream) {
		RETURN_FALSE;
	}

	/* Initialize return array */
	array_init(return_value);

	if ((target_buf = php_stream_copy_to_mem(stream, PHP_STREAM_COPY_ALL, 0)) != NULL) {
		s = ZSTR_VAL(target_buf);
		e = ZSTR_VAL(target_buf) + ZSTR_LEN(target_buf);

		if (!(p = (char*)php_stream_locate_eol(stream, target_buf))) {
			p = e;
			goto parse_eol;
		}

		if (stream->flags & PHP_STREAM_FLAG_EOL_MAC) {
			eol_marker = '\r';
		}

		/* for performance reasons the code is duplicated, so that the if (include_new_line)
		 * will not need to be done for every single line in the file. */
		if (include_new_line) {
			do {
				p++;
parse_eol:
				add_index_stringl(return_value, i++, s, p-s);
				s = p;
			} while ((p = memchr(p, eol_marker, (e-p))));
		} else {
			do {
				int windows_eol = 0;
				if (p != ZSTR_VAL(target_buf) && eol_marker == '\n' && *(p - 1) == '\r') {
					windows_eol++;
				}
				if (skip_blank_lines && !(p-s-windows_eol)) {
					s = ++p;
					continue;
				}
				add_index_stringl(return_value, i++, s, p-s-windows_eol);
				s = ++p;
			} while ((p = memchr(p, eol_marker, (e-p))));
		}

		/* handle any left overs of files without new lines */
		if (s != e) {
			p = e;
			goto parse_eol;
		}
	}

	if (target_buf) {
		zend_string_free(target_buf);
	}
	php_stream_close(stream);
}
/* }}} */

/* {{{ proto string tempnam(string dir, string prefix)
   Create a unique filename in a directory */
PHP_FUNCTION(tempnam)
{
	char *dir, *prefix;
	size_t dir_len, prefix_len;
	zend_string *opened_path;
	int fd;
	zend_string *p;

	if (zend_parse_parameters(ZEND_NUM_ARGS(), "pp", &dir, &dir_len, &prefix, &prefix_len) == FAILURE) {
		return;
	}

	if (php_check_open_basedir(dir)) {
		RETURN_FALSE;
	}

	p = php_basename(prefix, prefix_len, NULL, 0);
	if (ZSTR_LEN(p) > 64) {
		ZSTR_VAL(p)[63] = '\0';
	}

	RETVAL_FALSE;

	if ((fd = php_open_temporary_fd_ex(dir, ZSTR_VAL(p), &opened_path, 1)) >= 0) {
		close(fd);
		RETVAL_STR(opened_path);
	}
	zend_string_release(p);
}
/* }}} */

/* {{{ proto resource tmpfile(void)
   Create a temporary file that will be deleted automatically after use */
PHP_NAMED_FUNCTION(php_if_tmpfile)
{
	php_stream *stream;

	if (zend_parse_parameters_none() == FAILURE) {
		return;
	}

	stream = php_stream_fopen_tmpfile();

	if (stream) {
		php_stream_to_zval(stream, return_value);
	} else {
		RETURN_FALSE;
	}
}
/* }}} */

/* {{{ proto resource fopen(string filename, string mode [, bool use_include_path [, resource context]])
   Open a file or a URL and return a file pointer */
PHP_NAMED_FUNCTION(php_if_fopen)
{
	char *filename, *mode;
	size_t filename_len, mode_len;
	zend_bool use_include_path = 0;
	zval *zcontext = NULL;
	php_stream *stream;
	php_stream_context *context = NULL;

	if (zend_parse_parameters(ZEND_NUM_ARGS(), "ps|br", &filename, &filename_len, &mode, &mode_len, &use_include_path, &zcontext) == FAILURE) {
		RETURN_FALSE;
	}

	context = php_stream_context_from_zval(zcontext, 0);

	stream = php_stream_open_wrapper_ex(filename, mode, (use_include_path ? USE_PATH : 0) | REPORT_ERRORS, NULL, context);

	if (stream == NULL) {
		RETURN_FALSE;
	}

	php_stream_to_zval(stream, return_value);
}
/* }}} */

/* {{{ proto bool fclose(resource fp)
   Close an open file pointer */
PHPAPI PHP_FUNCTION(fclose)
{
	zval *res;
	php_stream *stream;

	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_RESOURCE(res)
	ZEND_PARSE_PARAMETERS_END_EX(RETURN_FALSE);

	PHP_STREAM_TO_ZVAL(stream, res);

	if ((stream->flags & PHP_STREAM_FLAG_NO_FCLOSE) != 0) {
		php_error_docref(NULL, E_WARNING, "%d is not a valid stream resource", stream->res->handle);
		RETURN_FALSE;
	}

	php_stream_free(stream,
		PHP_STREAM_FREE_KEEP_RSRC |
		(stream->is_persistent ? PHP_STREAM_FREE_CLOSE_PERSISTENT : PHP_STREAM_FREE_CLOSE));

	RETURN_TRUE;
}
/* }}} */

/* {{{ proto resource popen(string command, string mode)
   Execute a command and open either a read or a write pipe to it */
PHP_FUNCTION(popen)
{
	char *command, *mode;
	size_t command_len, mode_len;
	FILE *fp;
	php_stream *stream;
	char *posix_mode;

	if (zend_parse_parameters(ZEND_NUM_ARGS(), "ps", &command, &command_len, &mode, &mode_len) == FAILURE) {
		return;
	}

	posix_mode = estrndup(mode, mode_len);
#ifndef PHP_WIN32
	{
		char *z = memchr(posix_mode, 'b', mode_len);
		if (z) {
			memmove(z, z + 1, mode_len - (z - posix_mode));
		}
	}
#endif

	fp = VCWD_POPEN(command, posix_mode);
	if (!fp) {
		php_error_docref2(NULL, command, posix_mode, E_WARNING, "%s", strerror(errno));
		efree(posix_mode);
		RETURN_FALSE;
	}

	stream = php_stream_fopen_from_pipe(fp, mode);

	if (stream == NULL)	{
		php_error_docref2(NULL, command, mode, E_WARNING, "%s", strerror(errno));
		RETVAL_FALSE;
	} else {
		php_stream_to_zval(stream, return_value);
	}

	efree(posix_mode);
}
/* }}} */

/* {{{ proto int pclose(resource fp)
   Close a file pointer opened by popen() */
PHP_FUNCTION(pclose)
{
	zval *res;
	php_stream *stream;

	if (zend_parse_parameters(ZEND_NUM_ARGS(), "r", &res) == FAILURE) {
		RETURN_FALSE;
	}

	PHP_STREAM_TO_ZVAL(stream, res);

	FG(pclose_wait) = 1;
	zend_list_close(stream->res);
	FG(pclose_wait) = 0;
	RETURN_LONG(FG(pclose_ret));
}
/* }}} */

/* {{{ proto bool feof(resource fp)
   Test for end-of-file on a file pointer */
PHPAPI PHP_FUNCTION(feof)
{
	zval *res;
	php_stream *stream;

	ZEND_PARSE_PARAMETERS_START(1, 1)
		Z_PARAM_RESOURCE(res)
	ZEND_PARSE_PARAMETERS_END_EX(RETURN_FALSE);

	PHP_STREAM_TO_ZVAL(stream, res);

	if (php_stream_eof(stream)) {
		RETURN_TRUE;
	} else {
		RETURN_FALSE;
	}
}
/* }}} */

/* {{{ proto string fgets(resource fp[, int length])
   Get a line from file pointer */
PHPAPI PHP_FUNCTION(fgets)
{
	zval *res;
	zend_long len = 1024;
	char *buf = NULL;
	int argc = ZEND_NUM_ARGS();
	size_t line_len = 0;
	zend_string *str;