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streamsfuncs.c
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streamsfuncs.c
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2014 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: 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)
typedef unsigned long long php_timeout_ull;
#else
#include "win32/select.h"
#include "win32/sockets.h"
typedef unsigned __int64 php_timeout_ull;
#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;
php_socket_t 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);
/* set the __exposed flag.
* php_stream_to_zval() does, add_next_index_resource() does not */
php_stream_auto_cleanup(s1);
php_stream_auto_cleanup(s2);
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);
php_timeout_ull 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|zzdlr", &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 = (php_timeout_ull) (timeout * 1000000.0);
#ifdef PHP_WIN32
tv.tv_sec = (long)(conv / 1000000);
tv.tv_usec =(long)(conv % 1000000);
#else
tv.tv_sec = conv / 1000000;
tv.tv_usec = conv % 1000000;
#endif
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, 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);
}
/* }}} */
/* {{{ 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 (context) {
zend_list_addref(context->rsrc_id);
}
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, 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);
} else if (errstr) {
efree(errstr);
}
RETURN_FALSE;
}
if (errstr) {
efree(errstr);
}
php_stream_to_zval(stream, return_value);
}
/* }}} */
/* {{{ 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 *zpeername = NULL;
char *peername = NULL;
int peername_len;
php_timeout_ull 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, &zpeername) == FAILURE) {
RETURN_FALSE;
}
php_stream_from_zval(stream, &zstream);
/* prepare the timeout value for use */
conv = (php_timeout_ull) (timeout * 1000000.0);
#ifdef PHP_WIN32
tv.tv_sec = (long)(conv / 1000000);
tv.tv_usec = (long)(conv % 1000000);
#else
tv.tv_sec = conv / 1000000;
tv.tv_usec = conv % 1000000;
#endif
if (zpeername) {
zval_dtor(zpeername);
ZVAL_NULL(zpeername);
}
if (0 == php_stream_xport_accept(stream, &clistream,
zpeername ? &peername : NULL,
zpeername ? &peername_len : NULL,
NULL, NULL,
&tv, &errstr
TSRMLS_CC) && clistream) {
if (peername) {
ZVAL_STRINGL(zpeername, peername, peername_len, 0);
}
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;
char *name = NULL;
int name_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rb", &zstream, &want_peer) == FAILURE) {
RETURN_FALSE;
}
php_stream_from_zval(stream, &zstream);
if (0 != php_stream_xport_get_name(stream, want_peer,
&name,
&name_len,
NULL, NULL
TSRMLS_CC)) {
RETURN_FALSE;
}
RETURN_STRINGL(name, name_len, 0);
}
/* }}} */
/* {{{ 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 = NULL;
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;
char *remote_addr = NULL;
int remote_addr_len;
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);
}
if (to_read <= 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Length parameter must be greater than 0");
RETURN_FALSE;
}
read_buf = safe_emalloc(1, to_read, 1);
recvd = php_stream_xport_recvfrom(stream, read_buf, to_read, flags, NULL, NULL,
zremote ? &remote_addr : NULL,
zremote ? &remote_addr_len : NULL
TSRMLS_CC);
if (recvd >= 0) {
if (zremote) {
ZVAL_STRINGL(zremote, remote_addr, remote_addr_len, 0);
}
read_buf[recvd] = '\0';
RETURN_STRINGL(read_buf, recvd, 0);
}
efree(read_buf);
RETURN_FALSE;
}
/* }}} */
/* {{{ proto string 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,
desiredpos = -1L;
int len;
char *contents = NULL;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r|ll", &zsrc, &maxlen, &desiredpos) == FAILURE) {
RETURN_FALSE;
}
php_stream_from_zval(stream, &zsrc);
if (desiredpos >= 0) {
int seek_res = 0;
off_t position;
position = php_stream_tell(stream);
if (position >= 0 && desiredpos > position) {
/* use SEEK_CUR to allow emulation in streams that don't support seeking */
seek_res = php_stream_seek(stream, desiredpos - position, SEEK_CUR);
} else if (desiredpos < position) {
/* desired position before position or error on tell */
seek_res = php_stream_seek(stream, desiredpos, SEEK_SET);
}
if (seek_res != 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING,
"Failed to seek to position %ld in the stream", desiredpos);
RETURN_FALSE;
}
}
len = php_stream_copy_to_mem(stream, &contents, maxlen, 0);
if (contents) {
RETVAL_STRINGL(contents, len, 0);
} else {
RETVAL_EMPTY_STRING();
}
}
/* }}} */
/* {{{ proto long stream_copy_to_stream(resource source, resource dest [, long maxlen [, long pos]])
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, pos = 0;
size_t len;
int ret;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "rr|ll", &zsrc, &zdest, &maxlen, &pos) == FAILURE) {
RETURN_FALSE;
}
php_stream_from_zval(src, &zsrc);
php_stream_from_zval(dest, &zdest);
if (pos > 0 && php_stream_seek(src, pos, SEEK_SET) < 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to seek to position %ld in the stream", pos);
RETURN_FALSE;
}
ret = php_stream_copy_to_stream_ex(src, dest, maxlen, &len);
if (ret != SUCCESS) {
RETURN_FALSE;
}
RETURN_LONG(len);
}
/* }}} */
/* {{{ proto array 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_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "r", &arg1) == FAILURE) {
return;
}
php_stream_from_zval(stream, &arg1);
array_init(return_value);
if (stream->wrapperdata) {
MAKE_STD_ZVAL(newval);
MAKE_COPY_ZVAL(&stream->wrapperdata, 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;
uint stream_xport_len;
ulong num_key;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
if ((stream_xport_hash = php_stream_xport_get_hash())) {
HashPosition pos;
array_init(return_value);
zend_hash_internal_pointer_reset_ex(stream_xport_hash, &pos);
while (zend_hash_get_current_key_ex(stream_xport_hash,
&stream_xport, &stream_xport_len,
&num_key, 0, &pos) == HASH_KEY_IS_STRING) {
add_next_index_stringl(return_value, stream_xport, stream_xport_len - 1, 1);
zend_hash_move_forward_ex(stream_xport_hash, &pos);
}
} 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;
uint stream_protocol_len = 0;
ulong num_key;
if (zend_parse_parameters_none() == FAILURE) {
return;
}
if ((url_stream_wrappers_hash = php_stream_get_url_stream_wrappers_hash())) {
HashPosition pos;
array_init(return_value);
for (zend_hash_internal_pointer_reset_ex(url_stream_wrappers_hash, &pos);
(key_flags = zend_hash_get_current_key_ex(url_stream_wrappers_hash, &stream_protocol, &stream_protocol_len, &num_key, 0, &pos)) != HASH_KEY_NON_EXISTENT;
zend_hash_move_forward_ex(url_stream_wrappers_hash, &pos)) {
if (key_flags == HASH_KEY_IS_STRING) {
add_next_index_stringl(return_value, stream_protocol, stream_protocol_len - 1, 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;
int cnt = 0;
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))) {
/* Temporary int fd is needed for the STREAM data type on windows, passing this_fd directly to php_stream_cast()
would eventually bring a wrong result on x64. php_stream_cast() casts to int internally, and this will leave
the higher bits of a SOCKET variable uninitialized on systems with little endian. */
int tmp_fd;
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*)&tmp_fd, 1) && tmp_fd != -1) {
php_socket_t this_fd = (php_socket_t)tmp_fd;
PHP_SAFE_FD_SET(this_fd, fds);
if (this_fd > *max_fd) {
*max_fd = this_fd;
}
cnt++;
}
}
return cnt ? 1 : 0;
}
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 ret = 0;
if (Z_TYPE_P(stream_array) != IS_ARRAY) {
return 0;
}
ALLOC_HASHTABLE(new_hash);
zend_hash_init(new_hash, zend_hash_num_elements(Z_ARRVAL_P(stream_array)), NULL, ZVAL_PTR_DTOR, 0);
for (zend_hash_internal_pointer_reset(Z_ARRVAL_P(stream_array));
zend_hash_has_more_elements(Z_ARRVAL_P(stream_array)) == SUCCESS;
zend_hash_move_forward(Z_ARRVAL_P(stream_array))) {
int type;
char *key;
uint key_len;
ulong num_ind;
/* Temporary int fd is needed for the STREAM data type on windows, passing this_fd directly to php_stream_cast()
would eventually bring a wrong result on x64. php_stream_cast() casts to int internally, and this will leave
the higher bits of a SOCKET variable uninitialized on systems with little endian. */
int tmp_fd;
type = zend_hash_get_current_key_ex(Z_ARRVAL_P(stream_array),
&key, &key_len, &num_ind, 0, NULL);
if (type == HASH_KEY_NON_EXISTENT ||
zend_hash_get_current_data(Z_ARRVAL_P(stream_array), (void **) &elem) == FAILURE) {
continue; /* should not happen */
}
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*)&tmp_fd, 1) && tmp_fd != -1) {
php_socket_t this_fd = (php_socket_t)tmp_fd;
if (PHP_SAFE_FD_ISSET(this_fd, fds)) {
if (type == HASH_KEY_IS_LONG) {
zend_hash_index_update(new_hash, num_ind, (void *)elem, sizeof(zval *), (void **)&dest_elem);
} else { /* HASH_KEY_IS_STRING */
zend_hash_update(new_hash, key, key_len, (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, zend_hash_num_elements(Z_ARRVAL_P(stream_array)), 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;
php_socket_t 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);
if (Z_LVAL_PP(sec) < 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "The seconds parameter must be greater than 0");
RETURN_FALSE;
} else if (usec < 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "The microseconds parameter must be greater than 0");
RETURN_FALSE;
}
/* Solaris + BSD do not like microsecond values which are >= 1 sec */
if (usec > 999999) {
tv.tv_sec = Z_LVAL_PP(sec) + (usec / 1000000);
tv.tv_usec = usec % 1000000;
} else {
tv.tv_sec = Z_LVAL_PP(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) {
if (w_array != NULL) {
zend_hash_clean(Z_ARRVAL_P(w_array));
}
if (e_array != NULL) {
zend_hash_clean(Z_ARRVAL_P(e_array));
}
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];
MAKE_STD_ZVAL(ps[i]);
}
ZVAL_LONG(ps[0], notifycode);
ZVAL_LONG(ps[1], severity);
if (xmsg) {
ZVAL_STRING(ps[2], xmsg, 1);
} 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");
}
for (i = 0; i < 6; i++) {
zval_ptr_dtor(&ps[i]);
}
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 TSRMLS_DC)
{
HashPosition pos, opos;
zval **wval, **oval;
char *wkey, *okey;
uint 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 {
php_error_docref(NULL TSRMLS_CC, 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 TSRMLS_DC)
{
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;
Z_ADDREF_P(*tmp);
context->notifier->dtor = user_space_stream_notifier_dtor;
}
if (SUCCESS == zend_hash_find(Z_ARRVAL_P(params), "options", sizeof("options"), (void**)&tmp)) {
if (Z_TYPE_PP(tmp) == IS_ARRAY) {
parse_context_options(context, *tmp TSRMLS_CC);
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid stream/context parameter");
}
}
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(TSRMLS_C));
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