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sockets.c
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sockets.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) 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: |
| https://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: Chris Vandomelen <chrisv@b0rked.dhs.org> |
| Sterling Hughes <sterling@php.net> |
| Jason Greene <jason@php.net> |
| Gustavo Lopes <cataphract@php.net> |
| WinSock: Daniel Beulshausen <daniel@php4win.de> |
+----------------------------------------------------------------------+
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "php.h"
#include "php_network.h"
#include "ext/standard/file.h"
#include "ext/standard/info.h"
#include "php_ini.h"
#ifdef PHP_WIN32
# include "windows_common.h"
# include <windows.h>
# include <Ws2tcpip.h>
# include "php_sockets.h"
# include <win32/sockets.h>
# include <win32/winutil.h>
#else
# include <sys/types.h>
# include <sys/socket.h>
# include <netdb.h>
# include <netinet/in.h>
# include <netinet/tcp.h>
# include <sys/un.h>
# include <arpa/inet.h>
# include <sys/time.h>
# include <unistd.h>
# include <errno.h>
# include <fcntl.h>
# include <signal.h>
# include <sys/uio.h>
# define set_errno(a) (errno = a)
# include "php_sockets.h"
# ifdef HAVE_IF_NAMETOINDEX
# include <net/if.h>
# endif
# if defined(HAVE_LINUX_SOCK_DIAG_H)
# include <linux/sock_diag.h>
# else
# undef SO_MEMINFO
# endif
# if defined(HAVE_LINUX_FILTER_H)
# include <linux/filter.h>
# else
# undef SO_BPF_EXTENSIONS
# endif
#endif
#include <stddef.h>
#include "sockaddr_conv.h"
#include "multicast.h"
#include "sendrecvmsg.h"
#include "sockets_arginfo.h"
ZEND_DECLARE_MODULE_GLOBALS(sockets)
#define SUN_LEN_NO_UB(su) (sizeof(*(su)) - sizeof((su)->sun_path) + strlen((su)->sun_path))
/* The SUN_LEN macro does pointer arithmetics on NULL which triggers errors in the Clang UBSAN build */
#ifdef __has_feature
# if __has_feature(undefined_behavior_sanitizer)
# undef SUN_LEN
# define SUN_LEN(su) SUN_LEN_NO_UB(su)
# endif
#endif
#ifndef SUN_LEN
# define SUN_LEN(su) SUN_LEN_NO_UB(su)
#endif
#ifndef PF_INET
#define PF_INET AF_INET
#endif
static PHP_GINIT_FUNCTION(sockets);
static PHP_GSHUTDOWN_FUNCTION(sockets);
static PHP_MINIT_FUNCTION(sockets);
static PHP_MSHUTDOWN_FUNCTION(sockets);
static PHP_MINFO_FUNCTION(sockets);
static PHP_RSHUTDOWN_FUNCTION(sockets);
/* Socket class */
zend_class_entry *socket_ce;
static zend_object_handlers socket_object_handlers;
static zend_object *socket_create_object(zend_class_entry *class_type) {
php_socket *intern = zend_object_alloc(sizeof(php_socket), class_type);
zend_object_std_init(&intern->std, class_type);
object_properties_init(&intern->std, class_type);
intern->bsd_socket = -1; /* invalid socket */
intern->type = PF_UNSPEC;
intern->error = 0;
intern->blocking = 1;
ZVAL_UNDEF(&intern->zstream);
return &intern->std;
}
static zend_function *socket_get_constructor(zend_object *object) {
zend_throw_error(NULL, "Cannot directly construct Socket, use socket_create() instead");
return NULL;
}
static void socket_free_obj(zend_object *object)
{
php_socket *socket = socket_from_obj(object);
if (Z_ISUNDEF(socket->zstream)) {
if (!IS_INVALID_SOCKET(socket)) {
close(socket->bsd_socket);
}
} else {
zval_ptr_dtor(&socket->zstream);
}
zend_object_std_dtor(&socket->std);
}
static HashTable *socket_get_gc(zend_object *object, zval **table, int *n)
{
php_socket *socket = socket_from_obj(object);
*table = &socket->zstream;
*n = 1;
return zend_std_get_properties(object);
}
/* AddressInfo class */
typedef struct {
struct addrinfo addrinfo;
zend_object std;
} php_addrinfo;
zend_class_entry *address_info_ce;
static zend_object_handlers address_info_object_handlers;
static inline php_addrinfo *address_info_from_obj(zend_object *obj) {
return (php_addrinfo *)((char *)(obj) - XtOffsetOf(php_addrinfo, std));
}
#define Z_ADDRESS_INFO_P(zv) address_info_from_obj(Z_OBJ_P(zv))
static zend_object *address_info_create_object(zend_class_entry *class_type) {
php_addrinfo *intern = zend_object_alloc(sizeof(php_addrinfo), class_type);
zend_object_std_init(&intern->std, class_type);
object_properties_init(&intern->std, class_type);
return &intern->std;
}
static zend_function *address_info_get_constructor(zend_object *object) {
zend_throw_error(NULL, "Cannot directly construct AddressInfo, use socket_addrinfo_lookup() instead");
return NULL;
}
static void address_info_free_obj(zend_object *object)
{
php_addrinfo *address_info = address_info_from_obj(object);
if (address_info->addrinfo.ai_canonname != NULL) {
efree(address_info->addrinfo.ai_canonname);
}
efree(address_info->addrinfo.ai_addr);
zend_object_std_dtor(&address_info->std);
}
/* Module registration */
zend_module_entry sockets_module_entry = {
STANDARD_MODULE_HEADER,
"sockets",
ext_functions,
PHP_MINIT(sockets),
PHP_MSHUTDOWN(sockets),
NULL,
PHP_RSHUTDOWN(sockets),
PHP_MINFO(sockets),
PHP_SOCKETS_VERSION,
PHP_MODULE_GLOBALS(sockets),
PHP_GINIT(sockets),
PHP_GSHUTDOWN(sockets),
NULL,
STANDARD_MODULE_PROPERTIES_EX
};
#ifdef COMPILE_DL_SOCKETS
#ifdef ZTS
ZEND_TSRMLS_CACHE_DEFINE()
#endif
ZEND_GET_MODULE(sockets)
#endif
static bool php_open_listen_sock(php_socket *sock, int port, int backlog) /* {{{ */
{
struct sockaddr_in la = {0};
struct hostent *hp;
#ifndef PHP_WIN32
if ((hp = php_network_gethostbyname("0.0.0.0")) == NULL) {
#else
if ((hp = php_network_gethostbyname("localhost")) == NULL) {
#endif
return 0;
}
memcpy((char *) &la.sin_addr, hp->h_addr, hp->h_length);
la.sin_family = hp->h_addrtype;
la.sin_port = htons((unsigned short) port);
sock->bsd_socket = socket(PF_INET, SOCK_STREAM, 0);
sock->blocking = 1;
if (IS_INVALID_SOCKET(sock)) {
PHP_SOCKET_ERROR(sock, "unable to create listening socket", errno);
return 0;
}
sock->type = PF_INET;
if (bind(sock->bsd_socket, (struct sockaddr *)&la, sizeof(la)) != 0) {
PHP_SOCKET_ERROR(sock, "unable to bind to given address", errno);
close(sock->bsd_socket);
return 0;
}
if (listen(sock->bsd_socket, backlog) != 0) {
PHP_SOCKET_ERROR(sock, "unable to listen on socket", errno);
close(sock->bsd_socket);
return 0;
}
return 1;
}
/* }}} */
static bool php_accept_connect(php_socket *in_sock, php_socket *out_sock, struct sockaddr *la, socklen_t *la_len) /* {{{ */
{
out_sock->bsd_socket = accept(in_sock->bsd_socket, la, la_len);
if (IS_INVALID_SOCKET(out_sock)) {
PHP_SOCKET_ERROR(out_sock, "unable to accept incoming connection", errno);
return 0;
}
#if !defined(PHP_WIN32)
/**
* accept4 could had been used but not all platforms support it (e.g. Haiku, solaris < 11.4, ...)
* win32, not having any concept of child process, has no need to address it.
*/
int mode;
if ((mode = fcntl(out_sock->bsd_socket, F_GETFD)) < 0) {
PHP_SOCKET_ERROR(out_sock, "unable to get fcntl mode on the socket", errno);
return 0;
}
int cloexec = (mode | FD_CLOEXEC);
if (mode != cloexec) {
if (fcntl(out_sock->bsd_socket, F_SETFD, cloexec) < 0) {
PHP_SOCKET_ERROR(out_sock, "unable to set cloexec mode on the socket", errno);
return 0;
}
}
#endif
out_sock->error = 0;
out_sock->blocking = 1;
out_sock->type = la->sa_family;
return 1;
}
/* }}} */
/* {{{ php_read -- wrapper around read() so that it only reads to a \r or \n. */
static int php_read(php_socket *sock, void *buf, size_t maxlen, int flags)
{
int m = 0;
size_t n = 0;
int no_read = 0;
int nonblock = 0;
char *t = (char *) buf;
#ifndef PHP_WIN32
m = fcntl(sock->bsd_socket, F_GETFL);
if (m < 0) {
return m;
}
nonblock = (m & O_NONBLOCK);
m = 0;
#else
nonblock = !sock->blocking;
#endif
set_errno(0);
*t = '\0';
while (*t != '\n' && *t != '\r' && n < maxlen) {
if (m > 0) {
t++;
n++;
} else if (m == 0) {
no_read++;
if (nonblock && no_read >= 2) {
return n;
/* The first pass, m always is 0, so no_read becomes 1
* in the first pass. no_read becomes 2 in the second pass,
* and if this is nonblocking, we should return.. */
}
if (no_read > 200) {
set_errno(ECONNRESET);
return -1;
}
}
if (n < maxlen) {
m = recv(sock->bsd_socket, (void *) t, 1, flags);
}
if (errno != 0 && errno != ESPIPE && errno != EAGAIN) {
return -1;
}
set_errno(0);
}
if (n < maxlen) {
n++;
/* The only reasons it makes it to here is
* if '\n' or '\r' are encountered. So, increase
* the return by 1 to make up for the lack of the
* '\n' or '\r' in the count (since read() takes
* place at the end of the loop..) */
}
return n;
}
/* }}} */
char *sockets_strerror(int error) /* {{{ */
{
const char *buf;
#ifndef PHP_WIN32
if (error < -10000) {
error = -error - 10000;
#ifdef HAVE_HSTRERROR
buf = hstrerror(error);
#else
{
if (SOCKETS_G(strerror_buf)) {
efree(SOCKETS_G(strerror_buf));
}
spprintf(&(SOCKETS_G(strerror_buf)), 0, "Host lookup error %d", error);
buf = SOCKETS_G(strerror_buf);
}
#endif
} else {
buf = strerror(error);
}
#else
{
char *tmp = php_win32_error_to_msg(error);
buf = NULL;
if (tmp[0]) {
if (SOCKETS_G(strerror_buf)) {
efree(SOCKETS_G(strerror_buf));
}
SOCKETS_G(strerror_buf) = estrdup(tmp);
free(tmp);
buf = SOCKETS_G(strerror_buf);
}
}
#endif
return (buf ? (char *) buf : "");
}
/* }}} */
#ifdef PHP_WIN32
static void sockets_destroy_wsa_info(zval *data)
{/*{{{*/
HANDLE h = (HANDLE)Z_PTR_P(data);
CloseHandle(h);
}/*}}}*/
#endif
/* {{{ PHP_GINIT_FUNCTION */
static PHP_GINIT_FUNCTION(sockets)
{
#if defined(COMPILE_DL_SOCKETS) && defined(ZTS)
ZEND_TSRMLS_CACHE_UPDATE();
#endif
sockets_globals->last_error = 0;
sockets_globals->strerror_buf = NULL;
#ifdef PHP_WIN32
sockets_globals->wsa_child_count = 0;
zend_hash_init(&sockets_globals->wsa_info, 0, NULL, sockets_destroy_wsa_info, 1);
#endif
}
/* }}} */
/* {{{ PHP_GSHUTDOWN_FUNCTION */
static PHP_GSHUTDOWN_FUNCTION(sockets)
{
#ifdef PHP_WIN32
zend_hash_destroy(&sockets_globals->wsa_info);
#endif
}
/* }}} */
/* {{{ PHP_MINIT_FUNCTION */
static PHP_MINIT_FUNCTION(sockets)
{
#if defined(COMPILE_DL_SOCKETS) && defined(ZTS)
ZEND_TSRMLS_CACHE_UPDATE();
#endif
socket_ce = register_class_Socket();
socket_ce->create_object = socket_create_object;
socket_ce->default_object_handlers = &socket_object_handlers;
memcpy(&socket_object_handlers, &std_object_handlers, sizeof(zend_object_handlers));
socket_object_handlers.offset = XtOffsetOf(php_socket, std);
socket_object_handlers.free_obj = socket_free_obj;
socket_object_handlers.get_constructor = socket_get_constructor;
socket_object_handlers.clone_obj = NULL;
socket_object_handlers.get_gc = socket_get_gc;
socket_object_handlers.compare = zend_objects_not_comparable;
address_info_ce = register_class_AddressInfo();
address_info_ce->create_object = address_info_create_object;
address_info_ce->default_object_handlers = &address_info_object_handlers;
memcpy(&address_info_object_handlers, &std_object_handlers, sizeof(zend_object_handlers));
address_info_object_handlers.offset = XtOffsetOf(php_addrinfo, std);
address_info_object_handlers.free_obj = address_info_free_obj;
address_info_object_handlers.get_constructor = address_info_get_constructor;
address_info_object_handlers.clone_obj = NULL;
address_info_object_handlers.compare = zend_objects_not_comparable;
register_sockets_symbols(module_number);
php_socket_sendrecvmsg_init(INIT_FUNC_ARGS_PASSTHRU);
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MSHUTDOWN_FUNCTION */
static PHP_MSHUTDOWN_FUNCTION(sockets)
{
php_socket_sendrecvmsg_shutdown(SHUTDOWN_FUNC_ARGS_PASSTHRU);
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MINFO_FUNCTION */
static PHP_MINFO_FUNCTION(sockets)
{
php_info_print_table_start();
php_info_print_table_row(2, "Sockets Support", "enabled");
php_info_print_table_end();
}
/* }}} */
/* {{{ PHP_RSHUTDOWN_FUNCTION */
static PHP_RSHUTDOWN_FUNCTION(sockets)
{
if (SOCKETS_G(strerror_buf)) {
efree(SOCKETS_G(strerror_buf));
SOCKETS_G(strerror_buf) = NULL;
}
return SUCCESS;
}
/* }}} */
static int php_sock_array_to_fd_set(uint32_t arg_num, zval *sock_array, fd_set *fds, PHP_SOCKET *max_fd) /* {{{ */
{
zval *element;
php_socket *php_sock;
int num = 0;
if (Z_TYPE_P(sock_array) != IS_ARRAY) return 0;
ZEND_HASH_FOREACH_VAL(Z_ARRVAL_P(sock_array), element) {
ZVAL_DEREF(element);
if (Z_TYPE_P(element) != IS_OBJECT || Z_OBJCE_P(element) != socket_ce) {
zend_argument_type_error(arg_num, "must only have elements of type Socket, %s given", zend_zval_value_name(element));
return -1;
}
php_sock = Z_SOCKET_P(element);
if (IS_INVALID_SOCKET(php_sock)) {
zend_argument_type_error(arg_num, "contains a closed socket");
return -1;
}
PHP_SAFE_FD_SET(php_sock->bsd_socket, fds);
if (php_sock->bsd_socket > *max_fd) {
*max_fd = php_sock->bsd_socket;
}
num++;
} ZEND_HASH_FOREACH_END();
return num ? 1 : 0;
}
/* }}} */
static void php_sock_array_from_fd_set(zval *sock_array, fd_set *fds) /* {{{ */
{
zval *element;
zval *dest_element;
php_socket *php_sock;
zval new_hash;
zend_ulong num_key;
zend_string *key;
ZEND_ASSERT(Z_TYPE_P(sock_array) == IS_ARRAY);
array_init(&new_hash);
ZEND_HASH_FOREACH_KEY_VAL(Z_ARRVAL_P(sock_array), num_key, key, element) {
ZVAL_DEREF(element);
php_sock = Z_SOCKET_P(element);
ZEND_ASSERT(php_sock); /* element is supposed to be Socket object */
ZEND_ASSERT(!IS_INVALID_SOCKET(php_sock));
if (PHP_SAFE_FD_ISSET(php_sock->bsd_socket, fds)) {
/* Add fd to new array */
if (key) {
dest_element = zend_hash_add(Z_ARRVAL(new_hash), key, element);
} else {
dest_element = zend_hash_index_update(Z_ARRVAL(new_hash), num_key, element);
}
if (dest_element) {
Z_ADDREF_P(dest_element);
}
}
} ZEND_HASH_FOREACH_END();
/* Destroy old array, add new one */
zval_ptr_dtor(sock_array);
ZVAL_COPY_VALUE(sock_array, &new_hash);
}
/* }}} */
/* {{{ Runs the select() system call on the sets mentioned with a timeout specified by tv_sec and tv_usec */
PHP_FUNCTION(socket_select)
{
zval *r_array, *w_array, *e_array;
struct timeval tv;
struct timeval *tv_p = NULL;
fd_set rfds, wfds, efds;
PHP_SOCKET max_fd = 0;
int retval, sets = 0;
zend_long sec, usec = 0;
bool sec_is_null = 0;
ZEND_PARSE_PARAMETERS_START(4, 5)
Z_PARAM_ARRAY_EX2(r_array, 1, 1, 0)
Z_PARAM_ARRAY_EX2(w_array, 1, 1, 0)
Z_PARAM_ARRAY_EX2(e_array, 1, 1, 0)
Z_PARAM_LONG_OR_NULL(sec, sec_is_null)
Z_PARAM_OPTIONAL
Z_PARAM_LONG(usec)
ZEND_PARSE_PARAMETERS_END();
FD_ZERO(&rfds);
FD_ZERO(&wfds);
FD_ZERO(&efds);
if (r_array != NULL) {
sets += retval = php_sock_array_to_fd_set(1, r_array, &rfds, &max_fd);
if (retval == -1) {
RETURN_THROWS();
}
}
if (w_array != NULL) {
sets += retval = php_sock_array_to_fd_set(2, w_array, &wfds, &max_fd);
if (retval == -1) {
RETURN_THROWS();
}
}
if (e_array != NULL) {
sets += retval = php_sock_array_to_fd_set(3, e_array, &efds, &max_fd);
if (retval == -1) {
RETURN_THROWS();
}
}
if (!sets) {
zend_value_error("socket_select(): At least one array argument must be passed");
RETURN_THROWS();
}
if (!PHP_SAFE_MAX_FD(max_fd, 0)) {
RETURN_FALSE;
}
/* If seconds is not set to null, build the timeval, else we wait indefinitely */
if (!sec_is_null) {
/* Solaris + BSD do not like microsecond values which are >= 1 sec */
if (usec > 999999) {
tv.tv_sec = sec + (usec / 1000000);
tv.tv_usec = usec % 1000000;
} else {
tv.tv_sec = sec;
tv.tv_usec = usec;
}
tv_p = &tv;
}
retval = select(max_fd+1, &rfds, &wfds, &efds, tv_p);
if (retval == -1) {
SOCKETS_G(last_error) = errno;
php_error_docref(NULL, E_WARNING, "Unable to select [%d]: %s", errno, sockets_strerror(errno));
RETURN_FALSE;
}
if (r_array != NULL) php_sock_array_from_fd_set(r_array, &rfds);
if (w_array != NULL) php_sock_array_from_fd_set(w_array, &wfds);
if (e_array != NULL) php_sock_array_from_fd_set(e_array, &efds);
RETURN_LONG(retval);
}
/* }}} */
/* {{{ Opens a socket on port to accept connections */
PHP_FUNCTION(socket_create_listen)
{
php_socket *php_sock;
zend_long port, backlog = SOMAXCONN;
ZEND_PARSE_PARAMETERS_START(1, 2)
Z_PARAM_LONG(port)
Z_PARAM_OPTIONAL
Z_PARAM_LONG(backlog)
ZEND_PARSE_PARAMETERS_END();
object_init_ex(return_value, socket_ce);
php_sock = Z_SOCKET_P(return_value);
if (!php_open_listen_sock(php_sock, port, backlog)) {
zval_ptr_dtor(return_value);
RETURN_FALSE;
}
php_sock->error = 0;
php_sock->blocking = 1;
}
/* }}} */
/* {{{ Accepts a connection on the listening socket fd */
PHP_FUNCTION(socket_accept)
{
zval *arg1;
php_socket *php_sock, *new_sock;
php_sockaddr_storage sa;
socklen_t php_sa_len = sizeof(sa);
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_OBJECT_OF_CLASS(arg1, socket_ce)
ZEND_PARSE_PARAMETERS_END();
php_sock = Z_SOCKET_P(arg1);
ENSURE_SOCKET_VALID(php_sock);
object_init_ex(return_value, socket_ce);
new_sock = Z_SOCKET_P(return_value);
if (!php_accept_connect(php_sock, new_sock, (struct sockaddr*)&sa, &php_sa_len)) {
zval_ptr_dtor(return_value);
RETURN_FALSE;
}
}
/* }}} */
/* {{{ Sets nonblocking mode on a socket resource */
PHP_FUNCTION(socket_set_nonblock)
{
zval *arg1;
php_socket *php_sock;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_OBJECT_OF_CLASS(arg1, socket_ce)
ZEND_PARSE_PARAMETERS_END();
php_sock = Z_SOCKET_P(arg1);
ENSURE_SOCKET_VALID(php_sock);
if (!Z_ISUNDEF(php_sock->zstream)) {
php_stream *stream;
/* omit notice if resource doesn't exist anymore */
stream = zend_fetch_resource2_ex(&php_sock->zstream, NULL, php_file_le_stream(), php_file_le_pstream());
if (stream != NULL) {
if (php_stream_set_option(stream, PHP_STREAM_OPTION_BLOCKING, 0,
NULL) != -1) {
php_sock->blocking = 0;
RETURN_TRUE;
}
}
}
if (php_set_sock_blocking(php_sock->bsd_socket, 0) == SUCCESS) {
php_sock->blocking = 0;
RETURN_TRUE;
} else {
PHP_SOCKET_ERROR(php_sock, "unable to set nonblocking mode", errno);
RETURN_FALSE;
}
}
/* }}} */
/* {{{ Sets blocking mode on a socket resource */
PHP_FUNCTION(socket_set_block)
{
zval *arg1;
php_socket *php_sock;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_OBJECT_OF_CLASS(arg1, socket_ce)
ZEND_PARSE_PARAMETERS_END();
php_sock = Z_SOCKET_P(arg1);
ENSURE_SOCKET_VALID(php_sock);
/* if socket was created from a stream, give the stream a chance to take
* care of the operation itself, thereby allowing it to update its internal
* state */
if (!Z_ISUNDEF(php_sock->zstream)) {
php_stream *stream;
stream = zend_fetch_resource2_ex(&php_sock->zstream, NULL, php_file_le_stream(), php_file_le_pstream());
if (stream != NULL) {
if (php_stream_set_option(stream, PHP_STREAM_OPTION_BLOCKING, 1,
NULL) != -1) {
php_sock->blocking = 1;
RETURN_TRUE;
}
}
}
if (php_set_sock_blocking(php_sock->bsd_socket, 1) == SUCCESS) {
php_sock->blocking = 1;
RETURN_TRUE;
} else {
PHP_SOCKET_ERROR(php_sock, "unable to set blocking mode", errno);
RETURN_FALSE;
}
}
/* }}} */
/* {{{ Sets the maximum number of connections allowed to be waited for on the socket specified by fd */
PHP_FUNCTION(socket_listen)
{
zval *arg1;
php_socket *php_sock;
zend_long backlog = 0;
ZEND_PARSE_PARAMETERS_START(1, 2)
Z_PARAM_OBJECT_OF_CLASS(arg1, socket_ce)
Z_PARAM_OPTIONAL
Z_PARAM_LONG(backlog)
ZEND_PARSE_PARAMETERS_END();
php_sock = Z_SOCKET_P(arg1);
ENSURE_SOCKET_VALID(php_sock);
if (listen(php_sock->bsd_socket, backlog) != 0) {
PHP_SOCKET_ERROR(php_sock, "unable to listen on socket", errno);
RETURN_FALSE;
}
RETURN_TRUE;
}
/* }}} */
/* {{{ Closes a file descriptor */
PHP_FUNCTION(socket_close)
{
zval *arg1;
php_socket *php_socket;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_OBJECT_OF_CLASS(arg1, socket_ce)
ZEND_PARSE_PARAMETERS_END();
php_socket = Z_SOCKET_P(arg1);
ENSURE_SOCKET_VALID(php_socket);
if (!Z_ISUNDEF(php_socket->zstream)) {
php_stream *stream = NULL;
php_stream_from_zval_no_verify(stream, &php_socket->zstream);
if (stream != NULL) {
/* close & destroy stream, incl. removing it from the rsrc list;
* resource stored in php_sock->zstream will become invalid */
php_stream_free(stream,
PHP_STREAM_FREE_KEEP_RSRC | PHP_STREAM_FREE_CLOSE |
(stream->is_persistent?PHP_STREAM_FREE_CLOSE_PERSISTENT:0));
}
} else {
if (!IS_INVALID_SOCKET(php_socket)) {
close(php_socket->bsd_socket);
}
}
ZVAL_UNDEF(&php_socket->zstream);
php_socket->bsd_socket = -1;
}
/* }}} */
/* {{{ Writes the buffer to the socket resource, length is optional */
PHP_FUNCTION(socket_write)
{
zval *arg1;
php_socket *php_sock;
int retval;
size_t str_len;
zend_long length = 0;
bool length_is_null = 1;
char *str;
ZEND_PARSE_PARAMETERS_START(2, 3)
Z_PARAM_OBJECT_OF_CLASS(arg1, socket_ce)
Z_PARAM_STRING(str, str_len)
Z_PARAM_OPTIONAL
Z_PARAM_LONG_OR_NULL(length, length_is_null)
ZEND_PARSE_PARAMETERS_END();
php_sock = Z_SOCKET_P(arg1);
ENSURE_SOCKET_VALID(php_sock);
if (length < 0) {
zend_argument_value_error(3, "must be greater than or equal to 0");
RETURN_THROWS();
}
if (length_is_null) {
length = str_len;
}
#ifndef PHP_WIN32
retval = write(php_sock->bsd_socket, str, MIN(length, str_len));
#else
retval = send(php_sock->bsd_socket, str, min(length, str_len), 0);
#endif
if (retval < 0) {
PHP_SOCKET_ERROR(php_sock, "unable to write to socket", errno);
RETURN_FALSE;
}
RETURN_LONG(retval);
}
/* }}} */
/* {{{ Reads a maximum of length bytes from socket */
PHP_FUNCTION(socket_read)
{
zval *arg1;
php_socket *php_sock;
zend_string *tmpbuf;
int retval;
zend_long length, type = PHP_BINARY_READ;
ZEND_PARSE_PARAMETERS_START(2, 3)
Z_PARAM_OBJECT_OF_CLASS(arg1, socket_ce)
Z_PARAM_LONG(length)
Z_PARAM_OPTIONAL
Z_PARAM_LONG(type)
ZEND_PARSE_PARAMETERS_END();
php_sock = Z_SOCKET_P(arg1);
ENSURE_SOCKET_VALID(php_sock);
/* overflow check */
if ((length + 1) < 2) {
RETURN_FALSE;
}
tmpbuf = zend_string_alloc(length, 0);
if (type == PHP_NORMAL_READ) {
retval = php_read(php_sock, ZSTR_VAL(tmpbuf), length, 0);
} else {
retval = recv(php_sock->bsd_socket, ZSTR_VAL(tmpbuf), length, 0);
}
if (retval == -1) {
/* if the socket is in non-blocking mode and there's no data to read,
don't output any error, as this is a normal situation, and not an error */
if (PHP_IS_TRANSIENT_ERROR(errno)) {
php_sock->error = errno;
SOCKETS_G(last_error) = errno;
} else {
PHP_SOCKET_ERROR(php_sock, "unable to read from socket", errno);
}
zend_string_efree(tmpbuf);
RETURN_FALSE;
} else if (!retval) {
zend_string_efree(tmpbuf);
RETURN_EMPTY_STRING();
}
tmpbuf = zend_string_truncate(tmpbuf, retval, 0);
ZSTR_LEN(tmpbuf) = retval;
ZSTR_VAL(tmpbuf)[ZSTR_LEN(tmpbuf)] = '\0' ;
RETURN_NEW_STR(tmpbuf);
}
/* }}} */
/* {{{ Queries the remote side of the given socket which may either result in host/port or in a UNIX filesystem path, dependent on its type. */
PHP_FUNCTION(socket_getsockname)
{
zval *arg1, *addr, *port = NULL;
php_sockaddr_storage sa_storage = {0};
php_socket *php_sock;
struct sockaddr *sa;
struct sockaddr_in *sin;
#ifdef HAVE_IPV6
struct sockaddr_in6 *sin6;
#endif
char addrbuf[INET6_ADDRSTRLEN];
struct sockaddr_un *s_un;
const char *addr_string;
socklen_t salen = sizeof(php_sockaddr_storage);
ZEND_PARSE_PARAMETERS_START(2, 3)
Z_PARAM_OBJECT_OF_CLASS(arg1, socket_ce)
Z_PARAM_ZVAL(addr)
Z_PARAM_OPTIONAL
Z_PARAM_ZVAL(port)
ZEND_PARSE_PARAMETERS_END();
php_sock = Z_SOCKET_P(arg1);
ENSURE_SOCKET_VALID(php_sock);
sa = (struct sockaddr *) &sa_storage;
if (getsockname(php_sock->bsd_socket, sa, &salen) != 0) {
PHP_SOCKET_ERROR(php_sock, "unable to retrieve socket name", errno);
RETURN_FALSE;
}
switch (sa->sa_family) {
#ifdef HAVE_IPV6
case AF_INET6:
sin6 = (struct sockaddr_in6 *) sa;
inet_ntop(AF_INET6, &sin6->sin6_addr, addrbuf, sizeof(addrbuf));
ZEND_TRY_ASSIGN_REF_STRING(addr, addrbuf);
if (port != NULL) {
ZEND_TRY_ASSIGN_REF_LONG(port, htons(sin6->sin6_port));
}
RETURN_TRUE;
break;
#endif
case AF_INET:
sin = (struct sockaddr_in *) sa;
addr_string = inet_ntop(AF_INET, &sin->sin_addr, addrbuf, sizeof(addrbuf));
ZEND_TRY_ASSIGN_REF_STRING(addr, addr_string);