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php-src/ext/standard/streamsfuncs.c

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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. |
+----------------------------------------------------------------------+
| Authors: Wez Furlong <wez@thebrainroom.com> |
| Sara Golemon <pollita@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "php.h"
#include "php_globals.h"
#include "ext/standard/flock_compat.h"
#include "ext/standard/file.h"
#include "ext/standard/php_filestat.h"
#include "php_open_temporary_file.h"
#include "ext/standard/basic_functions.h"
#include "php_ini.h"
#include "streamsfuncs.h"
#include "php_network.h"
#include "php_string.h"
#ifndef PHP_WIN32
#define php_select(m, r, w, e, t) select(m, r, w, e, t)
#else
#include "win32/select.h"
#endif
static php_stream_context *decode_context_param(zval *contextresource TSRMLS_DC);
/* Streams based network functions */
#if HAVE_SOCKETPAIR
/* {{{ proto array stream_socket_pair(int domain, int type, int protocol)
Creates a pair of connected, indistinguishable socket streams */
PHP_FUNCTION(stream_socket_pair)
{
long domain, type, protocol;
php_stream *s1, *s2;
zval *zs1, *sz2;
int pair[2];
if (FAILURE == zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lll",
&domain, &type, &protocol)) {
RETURN_FALSE;
}
if (0 != socketpair(domain, type, protocol, pair)) {
char errbuf[256];
php_error_docref(NULL TSRMLS_CC, E_WARNING, "failed to create sockets: [%d]: %s",
php_socket_errno(), php_socket_strerror(php_socket_errno(), errbuf, sizeof(errbuf)));
RETURN_FALSE;
}
array_init(return_value);
s1 = php_stream_sock_open_from_socket(pair[0], 0);
s2 = php_stream_sock_open_from_socket(pair[1], 0);
add_next_index_resource(return_value, php_stream_get_resource_id(s1));
add_next_index_resource(return_value, php_stream_get_resource_id(s2));
}
/* }}} */
#endif
/* {{{ proto resource stream_socket_client(string remoteaddress [, long &errcode, string &errstring, double timeout, long flags, resource context])
Open a client connection to a remote address */
PHP_FUNCTION(stream_socket_client)
{
char *host;
int host_len;
zval *zerrno = NULL, *zerrstr = NULL, *zcontext = NULL;
double timeout = FG(default_socket_timeout);
unsigned long conv;
struct timeval tv;
char *hashkey = NULL;
php_stream *stream = NULL;
int err;
long flags = PHP_STREAM_CLIENT_CONNECT;
char *errstr = NULL;
php_stream_context *context = NULL;
RETVAL_FALSE;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|zzd!lr", &host, &host_len, &zerrno, &zerrstr, &timeout, &flags, &zcontext) == FAILURE) {
RETURN_FALSE;
}
context = php_stream_context_from_zval(zcontext, flags & PHP_FILE_NO_DEFAULT_CONTEXT);
if (flags & PHP_STREAM_CLIENT_PERSISTENT) {
spprintf(&hashkey, 0, "stream_socket_client__%s", host);
}
/* prepare the timeout value for use */
conv = (unsigned long) (timeout * 1000000.0);
tv.tv_sec = conv / 1000000;
tv.tv_usec = conv % 1000000;
if (zerrno) {
zval_dtor(zerrno);
ZVAL_LONG(zerrno, 0);
}
if (zerrstr) {
zval_dtor(zerrstr);
ZVAL_STRING(zerrstr, "", 1);
}
stream = php_stream_xport_create(host, host_len, ENFORCE_SAFE_MODE | REPORT_ERRORS,
STREAM_XPORT_CLIENT | (flags & PHP_STREAM_CLIENT_CONNECT ? STREAM_XPORT_CONNECT : 0) |
(flags & PHP_STREAM_CLIENT_ASYNC_CONNECT ? STREAM_XPORT_CONNECT_ASYNC : 0),
hashkey, &tv, context, &errstr, &err);
if (stream == NULL) {
/* host might contain binary characters */
char *quoted_host = php_addslashes(host, host_len, NULL, 0 TSRMLS_CC);
php_error_docref(NULL TSRMLS_CC, E_WARNING, "unable to connect to %s (%s)", quoted_host, errstr == NULL ? "Unknown error" : errstr);
efree(quoted_host);
}
if (hashkey) {
efree(hashkey);
}
if (stream == NULL) {
if (zerrno) {
zval_dtor(zerrno);
ZVAL_LONG(zerrno, err);
}
if (zerrstr && errstr) {
/* no need to dup; we need to efree buf anyway */
zval_dtor(zerrstr);
ZVAL_STRING(zerrstr, errstr, 0);
} else if (errstr) {
efree(errstr);
}
RETURN_FALSE;
}
if (errstr) {
efree(errstr);
}
php_stream_to_zval(stream, return_value);
if (zcontext) {
zend_list_addref(Z_RESVAL_P(zcontext));
}
}
/* }}} */
/* {{{ proto resource stream_socket_server(string localaddress [, long &errcode, string &errstring, long flags, resource context])
Create a server socket bound to localaddress */
PHP_FUNCTION(stream_socket_server)
{
char *host;
int host_len;
zval *zerrno = NULL, *zerrstr = NULL, *zcontext = NULL;
php_stream *stream = NULL;
int err = 0;
long flags = STREAM_XPORT_BIND | STREAM_XPORT_LISTEN;
char *errstr = NULL;
php_stream_context *context = NULL;
RETVAL_FALSE;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|zzlr", &host, &host_len, &zerrno, &zerrstr, &flags, &zcontext) == FAILURE) {
RETURN_FALSE;
}
context = php_stream_context_from_zval(zcontext, flags & PHP_FILE_NO_DEFAULT_CONTEXT);
if (zerrno) {
zval_dtor(zerrno);
ZVAL_LONG(zerrno, 0);
}
if (zerrstr) {
zval_dtor(zerrstr);
ZVAL_STRING(zerrstr, "", 1);
}
stream = php_stream_xport_create(host, host_len, ENFORCE_SAFE_MODE | REPORT_ERRORS,
STREAM_XPORT_SERVER | flags,
NULL, NULL, context, &errstr, &err);
if (stream == NULL) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "unable to connect to %s (%s)", host, errstr == NULL ? "Unknown error" : errstr);
}
if (stream == NULL) {
if (zerrno) {
zval_dtor(zerrno);
ZVAL_LONG(zerrno, err);
}
if (zerrstr && errstr) {
/* no need to dup; we need to efree buf anyway */
zval_dtor(zerrstr);
ZVAL_STRING(zerrstr, errstr, 0);
}
RETURN_FALSE;
}
if (errstr) {
efree(errstr);
}
php_stream_to_zval(stream, return_value);
if (zcontext) {
zend_list_addref(Z_RESVAL_P(zcontext));
}
}
/* }}} */
/* {{{ proto resource stream_socket_accept(resource serverstream, [ double timeout, string &peername ])
Accept a client connection from a server socket */
PHP_FUNCTION(stream_socket_accept)
{
double timeout = FG(default_socket_timeout);
zval *peername = NULL;
unsigned long conv;
struct timeval tv;
php_stream *stream = NULL, *clistream = NULL;
zval *zstream;
char *errstr = NULL;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r|dz", &zstream, &timeout, &peername) == FAILURE) {
RETURN_FALSE;
}
php_stream_from_zval(stream, &zstream);
/* prepare the timeout value for use */
conv = (unsigned long) (timeout * 1000000.0);
tv.tv_sec = conv / 1000000;
tv.tv_usec = conv % 1000000;
if (peername) {
zval_dtor(peername);
ZVAL_NULL(peername);
}
if (0 == php_stream_xport_accept(stream, &clistream,
peername ? &Z_STRVAL_P(peername) : NULL,
peername ? &Z_STRLEN_P(peername) : NULL,
NULL, NULL,
&tv, &errstr
TSRMLS_CC) && clistream) {
Z_TYPE_P(peername) = IS_STRING;
php_stream_to_zval(clistream, return_value);
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "accept failed: %s", errstr ? errstr : "Unknown error");
RETVAL_FALSE;
}
if (errstr) {
efree(errstr);
}
}
/* }}} */
/* {{{ proto string stream_socket_get_name(resource stream, bool want_peer)
Returns either the locally bound or remote name for a socket stream */
PHP_FUNCTION(stream_socket_get_name)
{
php_stream *stream;
zval *zstream;
zend_bool want_peer;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rb", &zstream, &want_peer) == FAILURE) {
RETURN_FALSE;
}
php_stream_from_zval(stream, &zstream);
Z_TYPE_P(return_value) = IS_STRING;
if (0 != php_stream_xport_get_name(stream, want_peer,
&Z_STRVAL_P(return_value),
&Z_STRLEN_P(return_value),
NULL, NULL
TSRMLS_CC)) {
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto long stream_socket_sendto(resouce stream, string data [, long flags [, string target_addr]])
Send data to a socket stream. If target_addr is specified it must be in dotted quad (or [ipv6]) format */
PHP_FUNCTION(stream_socket_sendto)
{
php_stream *stream;
zval *zstream;
long flags = 0;
char *data, *target_addr;
int datalen, target_addr_len = 0;
php_sockaddr_storage sa;
socklen_t sl = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rs|ls", &zstream, &data, &datalen, &flags, &target_addr, &target_addr_len) == FAILURE) {
RETURN_FALSE;
}
php_stream_from_zval(stream, &zstream);
if (target_addr_len) {
/* parse the address */
if (FAILURE == php_network_parse_network_address_with_port(target_addr, target_addr_len, (struct sockaddr*)&sa, &sl TSRMLS_CC)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to parse `%s' into a valid network address", target_addr);
RETURN_FALSE;
}
}
RETURN_LONG(php_stream_xport_sendto(stream, data, datalen, flags, target_addr ? &sa : NULL, sl TSRMLS_CC));
}
/* }}} */
/* {{{ proto string stream_socket_recvfrom(resource stream, long amount [, long flags [, string &remote_addr]])
Receives data from a socket stream */
PHP_FUNCTION(stream_socket_recvfrom)
{
php_stream *stream;
zval *zstream, *zremote = NULL;
long to_read = 0;
char *read_buf;
long flags = 0;
int recvd;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rl|lz", &zstream, &to_read, &flags, &zremote) == FAILURE) {
RETURN_FALSE;
}
php_stream_from_zval(stream, &zstream);
if (zremote) {
zval_dtor(zremote);
ZVAL_NULL(zremote);
Z_STRLEN_P(zremote) = 0;
}
if (to_read <= 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Length parameter must be greater than 0.");
RETURN_FALSE;
}
read_buf = emalloc(to_read + 1);
recvd = php_stream_xport_recvfrom(stream, read_buf, to_read, flags, NULL, NULL,
zremote ? &Z_STRVAL_P(zremote) : NULL,
zremote ? &Z_STRLEN_P(zremote) : NULL
TSRMLS_CC);
if (recvd >= 0) {
if (zremote && Z_STRLEN_P(zremote)) {
Z_TYPE_P(zremote) = IS_STRING;
}
read_buf[recvd] = '\0';
if (PG(magic_quotes_runtime)) {
Z_TYPE_P(return_value) = IS_STRING;
Z_STRVAL_P(return_value) = php_addslashes(Z_STRVAL_P(return_value),
Z_STRLEN_P(return_value), &Z_STRLEN_P(return_value), 1 TSRMLS_CC);
return;
} else {
RETURN_STRINGL(read_buf, recvd, 0);
}
}
efree(read_buf);
RETURN_FALSE;
}
/* }}} */
/* {{{ proto long stream_get_contents(resource source [, long maxlen [, long offset]])
Reads all remaining bytes (or up to maxlen bytes) from a stream and returns them as a string. */
PHP_FUNCTION(stream_get_contents)
{
php_stream *stream;
zval *zsrc;
long maxlen = PHP_STREAM_COPY_ALL, pos = 0;
int len, newlen;
char *contents = NULL;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r|ll", &zsrc, &maxlen, &pos) == FAILURE) {
RETURN_FALSE;
}
php_stream_from_zval(stream, &zsrc);
if (pos > 0 && php_stream_seek(stream, pos, SEEK_SET) < 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to seek to %ld position in the stream.", pos);
RETURN_FALSE;
}
if ((len = php_stream_copy_to_mem(stream, &contents, maxlen, 0)) > 0) {
if (PG(magic_quotes_runtime)) {
contents = php_addslashes(contents, len, &newlen, 1 TSRMLS_CC); /* 1 = free source string */
len = newlen;
}
RETVAL_STRINGL(contents, len, 0);
} else if (len == 0) {
RETVAL_EMPTY_STRING();
} else {
RETVAL_FALSE;
}
}
/* }}} */
/* {{{ proto long stream_copy_to_stream(resource source, resource dest [, long maxlen ])
Reads up to maxlen bytes from source stream and writes them to dest stream. */
PHP_FUNCTION(stream_copy_to_stream)
{
php_stream *src, *dest;
zval *zsrc, *zdest;
long maxlen = PHP_STREAM_COPY_ALL;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rr|l", &zsrc, &zdest, &maxlen) == FAILURE) {
RETURN_FALSE;
}
php_stream_from_zval(src, &zsrc);
php_stream_from_zval(dest, &zdest);
RETURN_LONG(php_stream_copy_to_stream(src, dest, maxlen));
}
/* }}} */
/* {{{ proto resource stream_get_meta_data(resource fp)
Retrieves header/meta data from streams/file pointers */
PHP_FUNCTION(stream_get_meta_data)
{
zval **arg1;
php_stream *stream;
zval *newval;
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &arg1) == FAILURE) {
WRONG_PARAM_COUNT;
}
php_stream_from_zval(stream, arg1);
array_init(return_value);
if (stream->wrapperdata) {
MAKE_STD_ZVAL(newval);
*newval = *(stream->wrapperdata);
zval_copy_ctor(newval);
INIT_PZVAL(newval);
add_assoc_zval(return_value, "wrapper_data", newval);
}
if (stream->wrapper) {
add_assoc_string(return_value, "wrapper_type", (char *)stream->wrapper->wops->label, 1);
}
add_assoc_string(return_value, "stream_type", (char *)stream->ops->label, 1);
add_assoc_string(return_value, "mode", stream->mode, 1);
#if 0 /* TODO: needs updating for new filter API */
if (stream->filterhead) {
php_stream_filter *filter;
MAKE_STD_ZVAL(newval);
array_init(newval);
for (filter = stream->filterhead; filter != NULL; filter = filter->next) {
add_next_index_string(newval, (char *)filter->fops->label, 1);
}
add_assoc_zval(return_value, "filters", newval);
}
#endif
add_assoc_long(return_value, "unread_bytes", stream->writepos - stream->readpos);
add_assoc_bool(return_value, "seekable", (stream->ops->seek) && (stream->flags & PHP_STREAM_FLAG_NO_SEEK) == 0);
if (stream->orig_path) {
add_assoc_string(return_value, "uri", stream->orig_path, 1);
}
if (!php_stream_populate_meta_data(stream, return_value)) {
add_assoc_bool(return_value, "timed_out", 0);
add_assoc_bool(return_value, "blocked", 1);
add_assoc_bool(return_value, "eof", php_stream_eof(stream));
}
}
/* }}} */
/* {{{ proto array stream_get_transports()
Retrieves list of registered socket transports */
PHP_FUNCTION(stream_get_transports)
{
HashTable *stream_xport_hash;
char *stream_xport;
int stream_xport_len;
ulong num_key;
if (ZEND_NUM_ARGS() != 0) {
WRONG_PARAM_COUNT;
}
if ((stream_xport_hash = php_stream_xport_get_hash())) {
array_init(return_value);
zend_hash_internal_pointer_reset(stream_xport_hash);
while (zend_hash_get_current_key_ex(stream_xport_hash,
&stream_xport, &stream_xport_len,
&num_key, 0, NULL) == HASH_KEY_IS_STRING) {
add_next_index_stringl(return_value, stream_xport, stream_xport_len, 1);
zend_hash_move_forward(stream_xport_hash);
}
} else {
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto array stream_get_wrappers()
Retrieves list of registered stream wrappers */
PHP_FUNCTION(stream_get_wrappers)
{
HashTable *url_stream_wrappers_hash;
char *stream_protocol;
int key_flags, stream_protocol_len = 0;
ulong num_key;
if (ZEND_NUM_ARGS() != 0) {
WRONG_PARAM_COUNT;
}
if ((url_stream_wrappers_hash = php_stream_get_url_stream_wrappers_hash())) {
array_init(return_value);
for(zend_hash_internal_pointer_reset(url_stream_wrappers_hash);
(key_flags = zend_hash_get_current_key_ex(url_stream_wrappers_hash, &stream_protocol, &stream_protocol_len, &num_key, 0, NULL)) != HASH_KEY_NON_EXISTANT;
zend_hash_move_forward(url_stream_wrappers_hash)) {
if (key_flags == HASH_KEY_IS_STRING) {
add_next_index_stringl(return_value, stream_protocol, stream_protocol_len, 1);
}
}
} else {
RETURN_FALSE;
}
}
/* }}} */
/* {{{ stream_select related functions */
static int stream_array_to_fd_set(zval *stream_array, fd_set *fds, php_socket_t *max_fd TSRMLS_DC)
{
zval **elem;
php_stream *stream;
php_socket_t this_fd;
if (Z_TYPE_P(stream_array) != IS_ARRAY) {
return 0;
}
for (zend_hash_internal_pointer_reset(Z_ARRVAL_P(stream_array));
zend_hash_get_current_data(Z_ARRVAL_P(stream_array), (void **) &elem) == SUCCESS;
zend_hash_move_forward(Z_ARRVAL_P(stream_array))) {
php_stream_from_zval_no_verify(stream, elem);
if (stream == NULL) {
continue;
}
/* get the fd.
* NB: Most other code will NOT use the PHP_STREAM_CAST_INTERNAL flag
* when casting. It is only used here so that the buffered data warning
* is not displayed.
* */
if (SUCCESS == php_stream_cast(stream, PHP_STREAM_AS_FD_FOR_SELECT | PHP_STREAM_CAST_INTERNAL, (void*)&this_fd, 1) && this_fd >= 0) {
PHP_SAFE_FD_SET(this_fd, fds);
if (this_fd > *max_fd) {
*max_fd = this_fd;
}
}
}
return 1;
}
static int stream_array_from_fd_set(zval *stream_array, fd_set *fds TSRMLS_DC)
{
zval **elem, **dest_elem;
php_stream *stream;
HashTable *new_hash;
int this_fd, ret = 0;
if (Z_TYPE_P(stream_array) != IS_ARRAY) {
return 0;
}
ALLOC_HASHTABLE(new_hash);
zend_hash_init(new_hash, 0, NULL, ZVAL_PTR_DTOR, 0);
for (zend_hash_internal_pointer_reset(Z_ARRVAL_P(stream_array));
zend_hash_get_current_data(Z_ARRVAL_P(stream_array), (void **) &elem) == SUCCESS;
zend_hash_move_forward(Z_ARRVAL_P(stream_array))) {
php_stream_from_zval_no_verify(stream, elem);
if (stream == NULL) {
continue;
}
/* get the fd
* NB: Most other code will NOT use the PHP_STREAM_CAST_INTERNAL flag
* when casting. It is only used here so that the buffered data warning
* is not displayed.
*/
if (SUCCESS == php_stream_cast(stream, PHP_STREAM_AS_FD_FOR_SELECT | PHP_STREAM_CAST_INTERNAL, (void*)&this_fd, 1) && this_fd >= 0) {
if (PHP_SAFE_FD_ISSET(this_fd, fds)) {
zend_hash_next_index_insert(new_hash, (void *)elem, sizeof(zval *), (void **)&dest_elem);
if (dest_elem) {
zval_add_ref(dest_elem);
}
ret++;
continue;
}
}
}
/* destroy old array and add new one */
zend_hash_destroy(Z_ARRVAL_P(stream_array));
efree(Z_ARRVAL_P(stream_array));
zend_hash_internal_pointer_reset(new_hash);
Z_ARRVAL_P(stream_array) = new_hash;
return ret;
}
static int stream_array_emulate_read_fd_set(zval *stream_array TSRMLS_DC)
{
zval **elem, **dest_elem;
php_stream *stream;
HashTable *new_hash;
int ret = 0;
if (Z_TYPE_P(stream_array) != IS_ARRAY) {
return 0;
}
ALLOC_HASHTABLE(new_hash);
zend_hash_init(new_hash, 0, NULL, ZVAL_PTR_DTOR, 0);
for (zend_hash_internal_pointer_reset(Z_ARRVAL_P(stream_array));
zend_hash_get_current_data(Z_ARRVAL_P(stream_array), (void **) &elem) == SUCCESS;
zend_hash_move_forward(Z_ARRVAL_P(stream_array))) {
php_stream_from_zval_no_verify(stream, elem);
if (stream == NULL) {
continue;
}
if ((stream->writepos - stream->readpos) > 0) {
/* allow readable non-descriptor based streams to participate in stream_select.
* Non-descriptor streams will only "work" if they have previously buffered the
* data. Not ideal, but better than nothing.
* This branch of code also allows blocking streams with buffered data to
* operate correctly in stream_select.
* */
zend_hash_next_index_insert(new_hash, (void *)elem, sizeof(zval *), (void **)&dest_elem);
if (dest_elem) {
zval_add_ref(dest_elem);
}
ret++;
continue;
}
}
if (ret > 0) {
/* destroy old array and add new one */
zend_hash_destroy(Z_ARRVAL_P(stream_array));
efree(Z_ARRVAL_P(stream_array));
zend_hash_internal_pointer_reset(new_hash);
Z_ARRVAL_P(stream_array) = new_hash;
} else {
zend_hash_destroy(new_hash);
FREE_HASHTABLE(new_hash);
}
return ret;
}
/* }}} */
/* {{{ proto int stream_select(array &read_streams, array &write_streams, array &except_streams, int tv_sec[, int tv_usec])
Runs the select() system call on the sets of streams with a timeout specified by tv_sec and tv_usec */
PHP_FUNCTION(stream_select)
{
zval *r_array, *w_array, *e_array, *sec = NULL;
struct timeval tv;
struct timeval *tv_p = NULL;
fd_set rfds, wfds, efds;
int max_fd = 0;
int retval, sets = 0;
long usec = 0;
int set_count, max_set_count = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "a!a!a!z!|l", &r_array, &w_array, &e_array, &sec, &usec) == FAILURE)
return;
FD_ZERO(&rfds);
FD_ZERO(&wfds);
FD_ZERO(&efds);
if (r_array != NULL) {
set_count = stream_array_to_fd_set(r_array, &rfds, &max_fd TSRMLS_CC);
if (set_count > max_set_count)
max_set_count = set_count;
sets += set_count;
}
if (w_array != NULL) {
set_count = stream_array_to_fd_set(w_array, &wfds, &max_fd TSRMLS_CC);
if (set_count > max_set_count)
max_set_count = set_count;
sets += set_count;
}
if (e_array != NULL) {
set_count = stream_array_to_fd_set(e_array, &efds, &max_fd TSRMLS_CC);
if (set_count > max_set_count)
max_set_count = set_count;
sets += set_count;
}
if (!sets) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "No stream arrays were passed");
RETURN_FALSE;
}
PHP_SAFE_MAX_FD(max_fd, max_set_count);
/* If seconds is not set to null, build the timeval, else we wait indefinitely */
if (sec != NULL) {
convert_to_long_ex(&sec);
/* Solaris + BSD do not like microsecond values which are >= 1 sec */
if (usec > 999999) {
tv.tv_sec = Z_LVAL_P(sec) + (usec / 1000000);
tv.tv_usec = usec % 1000000;
} else {
tv.tv_sec = Z_LVAL_P(sec);
tv.tv_usec = usec;
}
tv_p = &tv;
}
/* slight hack to support buffered data; if there is data sitting in the
* read buffer of any of the streams in the read array, let's pretend
* that we selected, but return only the readable sockets */
if (r_array != NULL) {
retval = stream_array_emulate_read_fd_set(r_array TSRMLS_CC);
if (retval > 0) {
RETURN_LONG(retval);
}
}
retval = php_select(max_fd+1, &rfds, &wfds, &efds, tv_p);
if (retval == -1) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "unable to select [%d]: %s (max_fd=%d)",
errno, strerror(errno), max_fd);
RETURN_FALSE;
}
if (r_array != NULL) stream_array_from_fd_set(r_array, &rfds TSRMLS_CC);
if (w_array != NULL) stream_array_from_fd_set(w_array, &wfds TSRMLS_CC);
if (e_array != NULL) stream_array_from_fd_set(e_array, &efds TSRMLS_CC);
RETURN_LONG(retval);
}
/* }}} */
/* {{{ stream_context related functions */
static void user_space_stream_notifier(php_stream_context *context, int notifycode, int severity,
char *xmsg, int xcode, size_t bytes_sofar, size_t bytes_max, void * ptr TSRMLS_DC)
{
zval *callback = (zval*)context->notifier->ptr;
zval *retval = NULL;
zval zvs[6];
zval *ps[6];
zval **ptps[6];
int i;
for (i = 0; i < 6; i++) {
INIT_ZVAL(zvs[i]);
ps[i] = &zvs[i];
ptps[i] = &ps[i];
}
ZVAL_LONG(ps[0], notifycode);
ZVAL_LONG(ps[1], severity);
if (xmsg) {
ZVAL_STRING(ps[2], xmsg, 0);
} else {
ZVAL_NULL(ps[2]);
}
ZVAL_LONG(ps[3], xcode);
ZVAL_LONG(ps[4], bytes_sofar);
ZVAL_LONG(ps[5], bytes_max);
if (FAILURE == call_user_function_ex(EG(function_table), NULL, callback, &retval, 6, ptps, 0, NULL TSRMLS_CC)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "failed to call user notifier");
}
if (retval) {
zval_ptr_dtor(&retval);
}
}
static void user_space_stream_notifier_dtor(php_stream_notifier *notifier)
{
if (notifier && notifier->ptr) {
zval_ptr_dtor((zval **)&(notifier->ptr));
notifier->ptr = NULL;
}
}
static int parse_context_options(php_stream_context *context, zval *options)
{
HashPosition pos, opos;
zval **wval, **oval;
char *wkey, *okey;
int wkey_len, okey_len;
int ret = SUCCESS;
ulong num_key;
zend_hash_internal_pointer_reset_ex(Z_ARRVAL_P(options), &pos);
while (SUCCESS == zend_hash_get_current_data_ex(Z_ARRVAL_P(options), (void**)&wval, &pos)) {
if (HASH_KEY_IS_STRING == zend_hash_get_current_key_ex(Z_ARRVAL_P(options), &wkey, &wkey_len, &num_key, 0, &pos)
&& Z_TYPE_PP(wval) == IS_ARRAY) {
zend_hash_internal_pointer_reset_ex(Z_ARRVAL_PP(wval), &opos);
while (SUCCESS == zend_hash_get_current_data_ex(Z_ARRVAL_PP(wval), (void**)&oval, &opos)) {
if (HASH_KEY_IS_STRING == zend_hash_get_current_key_ex(Z_ARRVAL_PP(wval), &okey, &okey_len, &num_key, 0, &opos)) {
php_stream_context_set_option(context, wkey, okey, *oval);
}
zend_hash_move_forward_ex(Z_ARRVAL_PP(wval), &opos);
}
} else {
zend_error(E_WARNING, "options should have the form [\"wrappername\"][\"optionname\"] = $value");
}
zend_hash_move_forward_ex(Z_ARRVAL_P(options), &pos);
}
return ret;
}
static int parse_context_params(php_stream_context *context, zval *params)
{
int ret = SUCCESS;
zval **tmp;
if (SUCCESS == zend_hash_find(Z_ARRVAL_P(params), "notification", sizeof("notification"), (void**)&tmp)) {
if (context->notifier) {
php_stream_notification_free(context->notifier);
context->notifier = NULL;
}
context->notifier = php_stream_notification_alloc();
context->notifier->func = user_space_stream_notifier;
context->notifier->ptr = *tmp;
ZVAL_ADDREF(*tmp);
context->notifier->dtor = user_space_stream_notifier_dtor;
}
if (SUCCESS == zend_hash_find(Z_ARRVAL_P(params), "options", sizeof("options"), (void**)&tmp)) {
parse_context_options(context, *tmp);
}
return ret;
}
/* given a zval which is either a stream or a context, return the underlying
* stream_context. If it is a stream that does not have a context assigned, it
* will create and assign a context and return that. */
static php_stream_context *decode_context_param(zval *contextresource TSRMLS_DC)
{
php_stream_context *context = NULL;
context = zend_fetch_resource(&contextresource TSRMLS_CC, -1, NULL, NULL, 1, php_le_stream_context());
if (context == NULL) {
php_stream *stream;
stream = zend_fetch_resource(&contextresource TSRMLS_CC, -1, NULL, NULL, 2, php_file_le_stream(), php_file_le_pstream);
if (stream) {
context = stream->context;
if (context == NULL) {
/* Only way this happens is if file is opened with NO_DEFAULT_CONTEXT
param, but then something is called which requires a context.
Don't give them the default one though since they already said they
didn't want it. */
context = stream->context = php_stream_context_alloc();
}
}
}
return context;
}
/* }}} */
/* {{{ proto array stream_context_get_options(resource context|resource stream)
Retrieve options for a stream/wrapper/context */
PHP_FUNCTION(stream_context_get_options)
{
zval *zcontext;
php_stream_context *context;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &zcontext) == FAILURE) {
RETURN_FALSE;
}
context = decode_context_param(zcontext TSRMLS_CC);
if (!context) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid stream/context parameter.");
RETURN_FALSE;
}
*return_value = *context->options;
zval_copy_ctor(return_value);
INIT_PZVAL(return_value);
}
/* }}} */
/* {{{ proto bool stream_context_set_option(resource context|resource stream, string wrappername, string optionname, mixed value)
Set an option for a wrapper */
PHP_FUNCTION(stream_context_set_option)
{
zval *options = NULL, *zcontext = NULL, *zvalue = NULL;
php_stream_context *context;
char *wrappername, *optionname;
int wrapperlen, optionlen;
if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, ZEND_NUM_ARGS() TSRMLS_CC,
"rssz", &zcontext, &wrappername, &wrapperlen,
&optionname, &optionlen, &zvalue) == FAILURE) {
if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, ZEND_NUM_ARGS() TSRMLS_CC,
"ra", &zcontext, &options) == FAILURE) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "called with wrong number or type of parameters; please RTM");
RETURN_FALSE;
}
}
/* figure out where the context is coming from exactly */
context = decode_context_param(zcontext TSRMLS_CC);
if (!context) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid stream/context parameter.");
RETURN_FALSE;
}
if (options) {
/* handle the array syntax */
RETVAL_BOOL(parse_context_options(context, options) == SUCCESS);
} else {
php_stream_context_set_option(context, wrappername, optionname, zvalue);
RETVAL_TRUE;
}
}
/* }}} */
/* {{{ proto bool stream_context_set_params(resource context|resource stream, array options)
Set parameters for a file context */
PHP_FUNCTION(stream_context_set_params)
{
zval *params, *zcontext;
php_stream_context *context;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ra", &zcontext, &params) == FAILURE) {
RETURN_FALSE;
}
context = decode_context_param(zcontext TSRMLS_CC);
if (!context) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid stream/context parameter.");
RETURN_FALSE;
}
RETVAL_BOOL(parse_context_params(context, params) == SUCCESS);
}
/* }}} */
/* {{{ proto resource stream_context_get_default([array options])
Get a handle on the default file/stream context and optionally set parameters */
PHP_FUNCTION(stream_context_get_default)
{
zval *params = NULL;
php_stream_context *context;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|a", &params) == FAILURE) {
RETURN_FALSE;
}
if (FG(default_context) == NULL) {
FG(default_context) = php_stream_context_alloc();
}
context = FG(default_context);
if (params) {
parse_context_options(context, params);
}
php_stream_context_to_zval(context, return_value);
}
/* }}} */
/* {{{ proto resource stream_context_create([array options])
Create a file context and optionally set parameters */
PHP_FUNCTION(stream_context_create)
{
zval *params = NULL;
php_stream_context *context;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|a", &params) == FAILURE) {
RETURN_FALSE;
}
context = php_stream_context_alloc();
if (params) {
parse_context_options(context, params);
}
php_stream_context_to_zval(context, return_value);
}
/* }}} */
/* {{{ streams filter functions */
static void apply_filter_to_stream(int append, INTERNAL_FUNCTION_PARAMETERS)
{
zval *zstream;
php_stream *stream;
char *filtername;
int filternamelen;
long read_write = 0;
zval *filterparams = NULL;
php_stream_filter *filter = NULL;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rs|lz", &zstream,
&filtername, &filternamelen, &read_write, &filterparams) == FAILURE) {
RETURN_FALSE;
}
php_stream_from_zval(stream, &zstream);
if ((read_write & PHP_STREAM_FILTER_ALL) == 0) {
/* Chain not specified.
* Examine stream->mode to determine which filters are needed
* There's no harm in attaching a filter to an unused chain,
* but why waste the memory and clock cycles?
*/
if (strchr(stream->mode, 'r') || strchr(stream->mode, '+')) {
read_write |= PHP_STREAM_FILTER_READ;
}
if (strchr(stream->mode, 'w') || strchr(stream->mode, '+') || strchr(stream->mode, 'a')) {
read_write |= PHP_STREAM_FILTER_WRITE;
}
}
if (read_write & PHP_STREAM_FILTER_READ) {
filter = php_stream_filter_create(filtername, filterparams, php_stream_is_persistent(stream) TSRMLS_CC);
if (filter == NULL) {
RETURN_FALSE;
}
if (append) {
php_stream_filter_append(&stream->readfilters, filter);
} else {
php_stream_filter_prepend(&stream->readfilters, filter);
}
}
if (read_write & PHP_STREAM_FILTER_WRITE) {
filter = php_stream_filter_create(filtername, filterparams, php_stream_is_persistent(stream) TSRMLS_CC);
if (filter == NULL) {
RETURN_FALSE;
}
if (append) {
php_stream_filter_append(&stream->writefilters, filter);
} else {
php_stream_filter_prepend(&stream->writefilters, filter);
}
}
if (filter) {
RETURN_RESOURCE(ZEND_REGISTER_RESOURCE(NULL, filter, php_file_le_stream_filter()));
} else {
RETURN_FALSE;
}
}
/* {{{ proto resource stream_filter_prepend(resource stream, string filtername[, int read_write[, string filterparams]])
Prepend a filter to a stream */
PHP_FUNCTION(stream_filter_prepend)
{
apply_filter_to_stream(0, INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
/* {{{ proto resource stream_filter_append(resource stream, string filtername[, int read_write[, string filterparams]])
Append a filter to a stream */
PHP_FUNCTION(stream_filter_append)
{
apply_filter_to_stream(1, INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
/* {{{ proto bool stream_filter_remove(resource stream_filter)
Flushes any data in the filter's internal buffer, removes it from the chain, and frees the resource */
PHP_FUNCTION(stream_filter_remove)
{
zval *zfilter;
php_stream_filter *filter;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &zfilter) == FAILURE) {
RETURN_FALSE;
}
filter = zend_fetch_resource(&zfilter TSRMLS_CC, -1, NULL, NULL, 1, php_file_le_stream_filter());
if (!filter) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid resource given, not a stream filter");
RETURN_FALSE;
}
if (php_stream_filter_flush(filter, 1) == FAILURE) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to flush filter, not removing");
RETURN_FALSE;
}
if (zend_list_delete(Z_LVAL_P(zfilter)) == FAILURE) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not invalidate filter, not removing");
RETURN_FALSE;
} else {
php_stream_filter_remove(filter, 1 TSRMLS_CC);
RETURN_TRUE;
}
}
/* }}} */
/* {{{ proto string stream_get_line(resource stream, int maxlen [, string ending])
Read up to maxlen bytes from a stream or until the ending string is found */
PHP_FUNCTION(stream_get_line)
{
char *str = NULL;
int str_len;
long max_length;
zval *zstream;
char *buf;
size_t buf_size;
php_stream *stream;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rl|s", &zstream, &max_length, &str, &str_len) == FAILURE) {
RETURN_FALSE;
}
if (max_length < 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "The maximum allowed length must be greater then or equal to zero.");
RETURN_FALSE;
}
php_stream_from_zval(stream, &zstream);
if ((buf = php_stream_get_record(stream, max_length, &buf_size, str, str_len TSRMLS_CC))) {
RETURN_STRINGL(buf, buf_size, 0);
} else {
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto bool stream_set_blocking(resource socket, int mode)
Set blocking/non-blocking mode on a socket or stream */
PHP_FUNCTION(stream_set_blocking)
{
zval **arg1, **arg2;
int block;
php_stream *stream;
if (ZEND_NUM_ARGS() != 2 || zend_get_parameters_ex(2, &arg1, &arg2) == FAILURE) {
WRONG_PARAM_COUNT;
}
php_stream_from_zval(stream, arg1);
convert_to_long_ex(arg2);
block = Z_LVAL_PP(arg2);
if (php_stream_set_option(stream, PHP_STREAM_OPTION_BLOCKING, block == 0 ? 0 : 1, NULL) == -1)
RETURN_FALSE;
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool set_socket_blocking(resource socket, int mode)
Set blocking/non-blocking mode on a socket */
PHP_FUNCTION(set_socket_blocking)
{
php_error_docref(NULL TSRMLS_CC, E_NOTICE, "This function is deprecated, use stream_set_blocking() instead");
PHP_FN(stream_set_blocking)(INTERNAL_FUNCTION_PARAM_PASSTHRU);
}
/* }}} */
/* {{{ proto bool stream_set_timeout(resource stream, int seconds, int microseconds)
Set timeout on stream read to seconds + microseonds */
#if HAVE_SYS_TIME_H || defined(PHP_WIN32)
PHP_FUNCTION(stream_set_timeout)
{
zval **socket, **seconds, **microseconds;
struct timeval t;
php_stream *stream;
if (ZEND_NUM_ARGS() < 2 || ZEND_NUM_ARGS() > 3 ||
zend_get_parameters_ex(ZEND_NUM_ARGS(), &socket, &seconds, &microseconds)==FAILURE) {
WRONG_PARAM_COUNT;
}
php_stream_from_zval(stream, socket);
convert_to_long_ex(seconds);
t.tv_sec = Z_LVAL_PP(seconds);
if (ZEND_NUM_ARGS() == 3) {
convert_to_long_ex(microseconds);
t.tv_usec = Z_LVAL_PP(microseconds) % 1000000;
t.tv_sec += Z_LVAL_PP(microseconds) / 1000000;
}
else
t.tv_usec = 0;
if (PHP_STREAM_OPTION_RETURN_OK == php_stream_set_option(stream, PHP_STREAM_OPTION_READ_TIMEOUT, 0, &t)) {
RETURN_TRUE;
}
RETURN_FALSE;
}
#endif /* HAVE_SYS_TIME_H || defined(PHP_WIN32) */
/* }}} */
/* {{{ proto int stream_set_write_buffer(resource fp, int buffer)
Set file write buffer */
PHP_FUNCTION(stream_set_write_buffer)
{
zval **arg1, **arg2;
int ret;
size_t buff;
php_stream *stream;
switch (ZEND_NUM_ARGS()) {
case 2:
if (zend_get_parameters_ex(2, &arg1, &arg2)==FAILURE) {
RETURN_FALSE;
}
break;
default:
WRONG_PARAM_COUNT;
/* NOTREACHED */
break;
}
php_stream_from_zval(stream, arg1);
convert_to_long_ex(arg2);
buff = Z_LVAL_PP(arg2);
/* if buff is 0 then set to non-buffered */
if (buff == 0) {
ret = php_stream_set_option(stream, PHP_STREAM_OPTION_WRITE_BUFFER, PHP_STREAM_BUFFER_NONE, NULL);
} else {
ret = php_stream_set_option(stream, PHP_STREAM_OPTION_WRITE_BUFFER, PHP_STREAM_BUFFER_FULL, &buff);
}
RETURN_LONG(ret == 0 ? 0 : EOF);
}
/* }}} */
/* {{{ proto int stream_socket_enable_crypto(resource stream, bool enable [, int cryptokind, resource sessionstream])
Enable or disable a specific kind of crypto on the stream */
PHP_FUNCTION(stream_socket_enable_crypto)
{
long cryptokind;
zval *zstream, *zsessstream = NULL;
php_stream *stream, *sessstream = NULL;
zend_bool enable;
int ret;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rb|lr", &zstream, &enable, &cryptokind, &zsessstream) == FAILURE) {
RETURN_FALSE;
}
php_stream_from_zval(stream, &zstream);
if (ZEND_NUM_ARGS() >= 3) {
if (zsessstream) {
php_stream_from_zval(sessstream, &zsessstream);
}
if (php_stream_xport_crypto_setup(stream, cryptokind, sessstream TSRMLS_CC) < 0) {
RETURN_FALSE;
}
}
ret = php_stream_xport_crypto_enable(stream, enable TSRMLS_CC);
switch (ret) {
case -1:
RETURN_FALSE;
case 0:
RETURN_LONG(0);
default:
RETURN_TRUE;
}
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/
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