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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2012 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. |
+----------------------------------------------------------------------+
| Author: Wez Furlong <wez@thebrainroom.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "php.h"
#include "php_streams_int.h"
#include "ext/standard/file.h"
static HashTable xport_hash;
PHPAPI HashTable *php_stream_xport_get_hash(void)
{
return &xport_hash;
}
PHPAPI int php_stream_xport_register(char *protocol, php_stream_transport_factory factory TSRMLS_DC)
{
return zend_hash_update(&xport_hash, protocol, strlen(protocol) + 1, &factory, sizeof(factory), NULL);
}
PHPAPI int php_stream_xport_unregister(char *protocol TSRMLS_DC)
{
return zend_hash_del(&xport_hash, protocol, strlen(protocol) + 1);
}
#define ERR_REPORT(out_err, fmt, arg) \
if (out_err) { spprintf(out_err, 0, fmt, arg); } \
else { php_error_docref(NULL TSRMLS_CC, E_WARNING, fmt, arg); }
#define ERR_RETURN(out_err, local_err, fmt) \
if (out_err) { *out_err = local_err; } \
else { php_error_docref(NULL TSRMLS_CC, E_WARNING, fmt, local_err ? local_err : "Unspecified error"); \
if (local_err) { efree(local_err); local_err = NULL; } \
}
PHPAPI php_stream *_php_stream_xport_create(const char *name, long namelen, int options,
int flags, const char *persistent_id,
struct timeval *timeout,
php_stream_context *context,
char **error_string,
int *error_code
STREAMS_DC TSRMLS_DC)
{
php_stream *stream = NULL;
php_stream_transport_factory *factory = NULL;
const char *p, *protocol = NULL;
int n = 0, failed = 0;
char *error_text = NULL;
struct timeval default_timeout = { 0, 0 };
default_timeout.tv_sec = FG(default_socket_timeout);
if (timeout == NULL) {
timeout = &default_timeout;
}
/* check for a cached persistent socket */
if (persistent_id) {
switch(php_stream_from_persistent_id(persistent_id, &stream TSRMLS_CC)) {
case PHP_STREAM_PERSISTENT_SUCCESS:
/* use a 0 second timeout when checking if the socket
* has already died */
if (PHP_STREAM_OPTION_RETURN_OK == php_stream_set_option(stream, PHP_STREAM_OPTION_CHECK_LIVENESS, 0, NULL)) {
return stream;
}
/* dead - kill it */
php_stream_pclose(stream);
stream = NULL;
/* fall through */
case PHP_STREAM_PERSISTENT_FAILURE:
default:
/* failed; get a new one */
;
}
}
for (p = name; isalnum((int)*p) || *p == '+' || *p == '-' || *p == '.'; p++) {
n++;
}
if ((*p == ':') && (n > 1) && !strncmp("://", p, 3)) {
protocol = name;
name = p + 3;
namelen -= n + 3;
} else {
protocol = "tcp";
n = 3;
}
if (protocol) {
char *tmp = estrndup(protocol, n);
if (FAILURE == zend_hash_find(&xport_hash, (char*)tmp, n + 1, (void**)&factory)) {
char wrapper_name[32];
if (n >= sizeof(wrapper_name))
n = sizeof(wrapper_name) - 1;
PHP_STRLCPY(wrapper_name, protocol, sizeof(wrapper_name), n);
ERR_REPORT(error_string, "Unable to find the socket transport \"%s\" - did you forget to enable it when you configured PHP?",
wrapper_name);
efree(tmp);
return NULL;
}
efree(tmp);
}
if (factory == NULL) {
/* should never happen */
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not find a factory !?");
return NULL;
}
stream = (*factory)(protocol, n,
(char*)name, namelen, persistent_id, options, flags, timeout,
context STREAMS_REL_CC TSRMLS_CC);
if (stream) {
php_stream_context_set(stream, context);
if ((flags & STREAM_XPORT_SERVER) == 0) {
/* client */
if (flags & (STREAM_XPORT_CONNECT|STREAM_XPORT_CONNECT_ASYNC)) {
if (-1 == php_stream_xport_connect(stream, name, namelen,
flags & STREAM_XPORT_CONNECT_ASYNC ? 1 : 0,
timeout, &error_text, error_code TSRMLS_CC)) {
ERR_RETURN(error_string, error_text, "connect() failed: %s");
failed = 1;
}
}
} else {
/* server */
if (flags & STREAM_XPORT_BIND) {
if (0 != php_stream_xport_bind(stream, name, namelen, &error_text TSRMLS_CC)) {
ERR_RETURN(error_string, error_text, "bind() failed: %s");
failed = 1;
} else if (flags & STREAM_XPORT_LISTEN) {
zval **zbacklog = NULL;
int backlog = 32;
if (stream->context && php_stream_context_get_option(stream->context, "socket", "backlog", &zbacklog) == SUCCESS) {
zval *ztmp = *zbacklog;
convert_to_long_ex(&ztmp);
backlog = Z_LVAL_P(ztmp);
if (ztmp != *zbacklog) {
zval_ptr_dtor(&ztmp);
}
}
if (0 != php_stream_xport_listen(stream, backlog, &error_text TSRMLS_CC)) {
ERR_RETURN(error_string, error_text, "listen() failed: %s");
failed = 1;
}
}
}
}
}
if (failed) {
/* failure means that they don't get a stream to play with */
if (persistent_id) {
php_stream_pclose(stream);
} else {
php_stream_close(stream);
}
stream = NULL;
}
return stream;
}
/* Bind the stream to a local address */
PHPAPI int php_stream_xport_bind(php_stream *stream,
const char *name, long namelen,
char **error_text
TSRMLS_DC)
{
php_stream_xport_param param;
int ret;
memset(&param, 0, sizeof(param));
param.op = STREAM_XPORT_OP_BIND;
param.inputs.name = (char*)name;
param.inputs.namelen = namelen;
param.want_errortext = error_text ? 1 : 0;
ret = php_stream_set_option(stream, PHP_STREAM_OPTION_XPORT_API, 0, &param);
if (ret == PHP_STREAM_OPTION_RETURN_OK) {
if (error_text) {
*error_text = param.outputs.error_text;
}
return param.outputs.returncode;
}
return ret;
}
/* Connect to a remote address */
PHPAPI int php_stream_xport_connect(php_stream *stream,
const char *name, long namelen,
int asynchronous,
struct timeval *timeout,
char **error_text,
int *error_code
TSRMLS_DC)
{
php_stream_xport_param param;
int ret;
memset(&param, 0, sizeof(param));
param.op = asynchronous ? STREAM_XPORT_OP_CONNECT_ASYNC: STREAM_XPORT_OP_CONNECT;
param.inputs.name = (char*)name;
param.inputs.namelen = namelen;
param.inputs.timeout = timeout;
param.want_errortext = error_text ? 1 : 0;
ret = php_stream_set_option(stream, PHP_STREAM_OPTION_XPORT_API, 0, &param);
if (ret == PHP_STREAM_OPTION_RETURN_OK) {
if (error_text) {
*error_text = param.outputs.error_text;
}
if (error_code) {
*error_code = param.outputs.error_code;
}
return param.outputs.returncode;
}
return ret;
}
/* Prepare to listen */
PHPAPI int php_stream_xport_listen(php_stream *stream, int backlog, char **error_text TSRMLS_DC)
{
php_stream_xport_param param;
int ret;
memset(&param, 0, sizeof(param));
param.op = STREAM_XPORT_OP_LISTEN;
param.inputs.backlog = backlog;
param.want_errortext = error_text ? 1 : 0;
ret = php_stream_set_option(stream, PHP_STREAM_OPTION_XPORT_API, 0, &param);
if (ret == PHP_STREAM_OPTION_RETURN_OK) {
if (error_text) {
*error_text = param.outputs.error_text;
}
return param.outputs.returncode;
}
return ret;
}
/* Get the next client and their address (as a string) */
PHPAPI int php_stream_xport_accept(php_stream *stream, php_stream **client,
char **textaddr, int *textaddrlen,
void **addr, socklen_t *addrlen,
struct timeval *timeout,
char **error_text
TSRMLS_DC)
{
php_stream_xport_param param;
int ret;
memset(&param, 0, sizeof(param));
param.op = STREAM_XPORT_OP_ACCEPT;
param.inputs.timeout = timeout;
param.want_addr = addr ? 1 : 0;
param.want_textaddr = textaddr ? 1 : 0;
param.want_errortext = error_text ? 1 : 0;
ret = php_stream_set_option(stream, PHP_STREAM_OPTION_XPORT_API, 0, &param);
if (ret == PHP_STREAM_OPTION_RETURN_OK) {
*client = param.outputs.client;
if (addr) {
*addr = param.outputs.addr;
*addrlen = param.outputs.addrlen;
}
if (textaddr) {
*textaddr = param.outputs.textaddr;
*textaddrlen = param.outputs.textaddrlen;
}
if (error_text) {
*error_text = param.outputs.error_text;
}
return param.outputs.returncode;
}
return ret;
}
PHPAPI int php_stream_xport_get_name(php_stream *stream, int want_peer,
char **textaddr, int *textaddrlen,
void **addr, socklen_t *addrlen
TSRMLS_DC)
{
php_stream_xport_param param;
int ret;
memset(&param, 0, sizeof(param));
param.op = want_peer ? STREAM_XPORT_OP_GET_PEER_NAME : STREAM_XPORT_OP_GET_NAME;
param.want_addr = addr ? 1 : 0;
param.want_textaddr = textaddr ? 1 : 0;
ret = php_stream_set_option(stream, PHP_STREAM_OPTION_XPORT_API, 0, &param);
if (ret == PHP_STREAM_OPTION_RETURN_OK) {
if (addr) {
*addr = param.outputs.addr;
*addrlen = param.outputs.addrlen;
}
if (textaddr) {
*textaddr = param.outputs.textaddr;
*textaddrlen = param.outputs.textaddrlen;
}
return param.outputs.returncode;
}
return ret;
}
PHPAPI int php_stream_xport_crypto_setup(php_stream *stream, php_stream_xport_crypt_method_t crypto_method, php_stream *session_stream TSRMLS_DC)
{
php_stream_xport_crypto_param param;
int ret;
memset(&param, 0, sizeof(param));
param.op = STREAM_XPORT_CRYPTO_OP_SETUP;
param.inputs.method = crypto_method;
param.inputs.session = session_stream;
ret = php_stream_set_option(stream, PHP_STREAM_OPTION_CRYPTO_API, 0, &param);
if (ret == PHP_STREAM_OPTION_RETURN_OK) {
return param.outputs.returncode;
}
php_error_docref("streams.crypto" TSRMLS_CC, E_WARNING, "this stream does not support SSL/crypto");
return ret;
}
PHPAPI int php_stream_xport_crypto_enable(php_stream *stream, int activate TSRMLS_DC)
{
php_stream_xport_crypto_param param;
int ret;
memset(&param, 0, sizeof(param));
param.op = STREAM_XPORT_CRYPTO_OP_ENABLE;
param.inputs.activate = activate;
ret = php_stream_set_option(stream, PHP_STREAM_OPTION_CRYPTO_API, 0, &param);
if (ret == PHP_STREAM_OPTION_RETURN_OK) {
return param.outputs.returncode;
}
php_error_docref("streams.crypto" TSRMLS_CC, E_WARNING, "this stream does not support SSL/crypto");
return ret;
}
/* Similar to recv() system call; read data from the stream, optionally
* peeking, optionally retrieving OOB data */
PHPAPI int php_stream_xport_recvfrom(php_stream *stream, char *buf, size_t buflen,
long flags, void **addr, socklen_t *addrlen, char **textaddr, int *textaddrlen
TSRMLS_DC)
{
php_stream_xport_param param;
int ret = 0;
int recvd_len = 0;
#if 0
int oob;
if (flags == 0 && addr == NULL) {
return php_stream_read(stream, buf, buflen);
}
if (stream->readfilters.head) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "cannot peek or fetch OOB data from a filtered stream");
return -1;
}
oob = (flags & STREAM_OOB) == STREAM_OOB;
if (!oob && addr == NULL) {
/* must be peeking at regular data; copy content from the buffer
* first, then adjust the pointer/len before handing off to the
* stream */
recvd_len = stream->writepos - stream->readpos;
if (recvd_len > buflen) {
recvd_len = buflen;
}
if (recvd_len) {
memcpy(buf, stream->readbuf, recvd_len);
buf += recvd_len;
buflen -= recvd_len;
}
/* if we filled their buffer, return */
if (buflen == 0) {
return recvd_len;
}
}
#endif
/* otherwise, we are going to bypass the buffer */
memset(&param, 0, sizeof(param));
param.op = STREAM_XPORT_OP_RECV;
param.want_addr = addr ? 1 : 0;
param.want_textaddr = textaddr ? 1 : 0;
param.inputs.buf = buf;
param.inputs.buflen = buflen;
param.inputs.flags = flags;
ret = php_stream_set_option(stream, PHP_STREAM_OPTION_XPORT_API, 0, &param);
if (ret == PHP_STREAM_OPTION_RETURN_OK) {
if (addr) {
*addr = param.outputs.addr;
*addrlen = param.outputs.addrlen;
}
if (textaddr) {
*textaddr = param.outputs.textaddr;
*textaddrlen = param.outputs.textaddrlen;
}
return recvd_len + param.outputs.returncode;
}
return recvd_len ? recvd_len : -1;
}
/* Similar to send() system call; send data to the stream, optionally
* sending it as OOB data */
PHPAPI int php_stream_xport_sendto(php_stream *stream, const char *buf, size_t buflen,
long flags, void *addr, socklen_t addrlen TSRMLS_DC)
{
php_stream_xport_param param;
int ret = 0;
int oob;
#if 0
if (flags == 0 && addr == NULL) {
return php_stream_write(stream, buf, buflen);
}
#endif
oob = (flags & STREAM_OOB) == STREAM_OOB;
if ((oob || addr) && stream->writefilters.head) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "cannot write OOB data, or data to a targeted address on a filtered stream");
return -1;
}
memset(&param, 0, sizeof(param));
param.op = STREAM_XPORT_OP_SEND;
param.want_addr = addr ? 1 : 0;
param.inputs.buf = (char*)buf;
param.inputs.buflen = buflen;
param.inputs.flags = flags;
param.inputs.addr = addr;
param.inputs.addrlen = addrlen;
ret = php_stream_set_option(stream, PHP_STREAM_OPTION_XPORT_API, 0, &param);
if (ret == PHP_STREAM_OPTION_RETURN_OK) {
return param.outputs.returncode;
}
return -1;
}
/* Similar to shutdown() system call; shut down part of a full-duplex
* connection */
PHPAPI int php_stream_xport_shutdown(php_stream *stream, stream_shutdown_t how TSRMLS_DC)
{
php_stream_xport_param param;
int ret = 0;
memset(&param, 0, sizeof(param));
param.op = STREAM_XPORT_OP_SHUTDOWN;
param.how = how;
ret = php_stream_set_option(stream, PHP_STREAM_OPTION_XPORT_API, 0, &param);
if (ret == PHP_STREAM_OPTION_RETURN_OK) {
return param.outputs.returncode;
}
return -1;
}
/*
* 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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