1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 5 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2016 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.php.net/license/3_01.txt |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Author: Wez Furlong <wez@thebrainroom.com> |
16 +----------------------------------------------------------------------+
17 */
18
19 /* $Id$ */
20
21 #include "php.h"
22 #include "php_streams_int.h"
23 #include "ext/standard/file.h"
24
25 static HashTable xport_hash;
26
php_stream_xport_get_hash(void)27 PHPAPI HashTable *php_stream_xport_get_hash(void)
28 {
29 return &xport_hash;
30 }
31
php_stream_xport_register(const char * protocol,php_stream_transport_factory factory TSRMLS_DC)32 PHPAPI int php_stream_xport_register(const char *protocol, php_stream_transport_factory factory TSRMLS_DC)
33 {
34 return zend_hash_update(&xport_hash, protocol, strlen(protocol) + 1, &factory, sizeof(factory), NULL);
35 }
36
php_stream_xport_unregister(const char * protocol TSRMLS_DC)37 PHPAPI int php_stream_xport_unregister(const char *protocol TSRMLS_DC)
38 {
39 return zend_hash_del(&xport_hash, protocol, strlen(protocol) + 1);
40 }
41
42 #define ERR_REPORT(out_err, fmt, arg) \
43 if (out_err) { spprintf(out_err, 0, fmt, arg); } \
44 else { php_error_docref(NULL TSRMLS_CC, E_WARNING, fmt, arg); }
45
46 #define ERR_RETURN(out_err, local_err, fmt) \
47 if (out_err) { *out_err = local_err; } \
48 else { php_error_docref(NULL TSRMLS_CC, E_WARNING, fmt, local_err ? local_err : "Unspecified error"); \
49 if (local_err) { efree(local_err); local_err = NULL; } \
50 }
51
_php_stream_xport_create(const char * name,size_t 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)52 PHPAPI php_stream *_php_stream_xport_create(const char *name, size_t namelen, int options,
53 int flags, const char *persistent_id,
54 struct timeval *timeout,
55 php_stream_context *context,
56 char **error_string,
57 int *error_code
58 STREAMS_DC TSRMLS_DC)
59 {
60 php_stream *stream = NULL;
61 php_stream_transport_factory *factory = NULL;
62 const char *p, *protocol = NULL;
63 int n = 0, failed = 0;
64 char *error_text = NULL;
65 struct timeval default_timeout = { 0, 0 };
66
67 default_timeout.tv_sec = FG(default_socket_timeout);
68
69 if (timeout == NULL) {
70 timeout = &default_timeout;
71 }
72
73 /* check for a cached persistent socket */
74 if (persistent_id) {
75 switch(php_stream_from_persistent_id(persistent_id, &stream TSRMLS_CC)) {
76 case PHP_STREAM_PERSISTENT_SUCCESS:
77 /* use a 0 second timeout when checking if the socket
78 * has already died */
79 if (PHP_STREAM_OPTION_RETURN_OK == php_stream_set_option(stream, PHP_STREAM_OPTION_CHECK_LIVENESS, 0, NULL)) {
80 return stream;
81 }
82 /* dead - kill it */
83 php_stream_pclose(stream);
84 stream = NULL;
85
86 /* fall through */
87
88 case PHP_STREAM_PERSISTENT_FAILURE:
89 default:
90 /* failed; get a new one */
91 ;
92 }
93 }
94
95 for (p = name; isalnum((int)*p) || *p == '+' || *p == '-' || *p == '.'; p++) {
96 n++;
97 }
98
99 if ((*p == ':') && (n > 1) && !strncmp("://", p, 3)) {
100 protocol = name;
101 name = p + 3;
102 namelen -= n + 3;
103 } else {
104 protocol = "tcp";
105 n = 3;
106 }
107
108 if (protocol) {
109 char *tmp = estrndup(protocol, n);
110 if (FAILURE == zend_hash_find(&xport_hash, (char*)tmp, n + 1, (void**)&factory)) {
111 char wrapper_name[32];
112
113 if (n >= sizeof(wrapper_name))
114 n = sizeof(wrapper_name) - 1;
115 PHP_STRLCPY(wrapper_name, protocol, sizeof(wrapper_name), n);
116
117 ERR_REPORT(error_string, "Unable to find the socket transport \"%s\" - did you forget to enable it when you configured PHP?",
118 wrapper_name);
119
120 efree(tmp);
121 return NULL;
122 }
123 efree(tmp);
124 }
125
126 if (factory == NULL) {
127 /* should never happen */
128 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not find a factory !?");
129 return NULL;
130 }
131
132 stream = (*factory)(protocol, n,
133 (char*)name, namelen, persistent_id, options, flags, timeout,
134 context STREAMS_REL_CC TSRMLS_CC);
135
136 if (stream) {
137 php_stream_context_set(stream, context);
138
139 if ((flags & STREAM_XPORT_SERVER) == 0) {
140 /* client */
141
142 if (flags & (STREAM_XPORT_CONNECT|STREAM_XPORT_CONNECT_ASYNC)) {
143 if (-1 == php_stream_xport_connect(stream, name, namelen,
144 flags & STREAM_XPORT_CONNECT_ASYNC ? 1 : 0,
145 timeout, &error_text, error_code TSRMLS_CC)) {
146
147 ERR_RETURN(error_string, error_text, "connect() failed: %s");
148
149 failed = 1;
150 }
151 }
152
153 } else {
154 /* server */
155 if (flags & STREAM_XPORT_BIND) {
156 if (0 != php_stream_xport_bind(stream, name, namelen, &error_text TSRMLS_CC)) {
157 ERR_RETURN(error_string, error_text, "bind() failed: %s");
158 failed = 1;
159 } else if (flags & STREAM_XPORT_LISTEN) {
160 zval **zbacklog = NULL;
161 int backlog = 32;
162
163 if (stream->context && php_stream_context_get_option(stream->context, "socket", "backlog", &zbacklog) == SUCCESS) {
164 zval *ztmp = *zbacklog;
165
166 convert_to_long_ex(&ztmp);
167 backlog = Z_LVAL_P(ztmp);
168 if (ztmp != *zbacklog) {
169 zval_ptr_dtor(&ztmp);
170 }
171 }
172
173 if (0 != php_stream_xport_listen(stream, backlog, &error_text TSRMLS_CC)) {
174 ERR_RETURN(error_string, error_text, "listen() failed: %s");
175 failed = 1;
176 }
177 }
178 }
179 }
180 }
181
182 if (failed) {
183 /* failure means that they don't get a stream to play with */
184 if (persistent_id) {
185 php_stream_pclose(stream);
186 } else {
187 php_stream_close(stream);
188 }
189 stream = NULL;
190 }
191
192 return stream;
193 }
194
195 /* Bind the stream to a local address */
php_stream_xport_bind(php_stream * stream,const char * name,size_t namelen,char ** error_text TSRMLS_DC)196 PHPAPI int php_stream_xport_bind(php_stream *stream,
197 const char *name, size_t namelen,
198 char **error_text
199 TSRMLS_DC)
200 {
201 php_stream_xport_param param;
202 int ret;
203
204 memset(¶m, 0, sizeof(param));
205 param.op = STREAM_XPORT_OP_BIND;
206 param.inputs.name = (char*)name;
207 param.inputs.namelen = namelen;
208 param.want_errortext = error_text ? 1 : 0;
209
210 ret = php_stream_set_option(stream, PHP_STREAM_OPTION_XPORT_API, 0, ¶m);
211
212 if (ret == PHP_STREAM_OPTION_RETURN_OK) {
213 if (error_text) {
214 *error_text = param.outputs.error_text;
215 }
216
217 return param.outputs.returncode;
218 }
219
220 return ret;
221 }
222
223 /* Connect to a remote address */
php_stream_xport_connect(php_stream * stream,const char * name,size_t namelen,int asynchronous,struct timeval * timeout,char ** error_text,int * error_code TSRMLS_DC)224 PHPAPI int php_stream_xport_connect(php_stream *stream,
225 const char *name, size_t namelen,
226 int asynchronous,
227 struct timeval *timeout,
228 char **error_text,
229 int *error_code
230 TSRMLS_DC)
231 {
232 php_stream_xport_param param;
233 int ret;
234
235 memset(¶m, 0, sizeof(param));
236 param.op = asynchronous ? STREAM_XPORT_OP_CONNECT_ASYNC: STREAM_XPORT_OP_CONNECT;
237 param.inputs.name = (char*)name;
238 param.inputs.namelen = namelen;
239 param.inputs.timeout = timeout;
240
241 param.want_errortext = error_text ? 1 : 0;
242
243 ret = php_stream_set_option(stream, PHP_STREAM_OPTION_XPORT_API, 0, ¶m);
244
245 if (ret == PHP_STREAM_OPTION_RETURN_OK) {
246 if (error_text) {
247 *error_text = param.outputs.error_text;
248 }
249 if (error_code) {
250 *error_code = param.outputs.error_code;
251 }
252 return param.outputs.returncode;
253 }
254
255 return ret;
256
257 }
258
259 /* Prepare to listen */
php_stream_xport_listen(php_stream * stream,int backlog,char ** error_text TSRMLS_DC)260 PHPAPI int php_stream_xport_listen(php_stream *stream, int backlog, char **error_text TSRMLS_DC)
261 {
262 php_stream_xport_param param;
263 int ret;
264
265 memset(¶m, 0, sizeof(param));
266 param.op = STREAM_XPORT_OP_LISTEN;
267 param.inputs.backlog = backlog;
268 param.want_errortext = error_text ? 1 : 0;
269
270 ret = php_stream_set_option(stream, PHP_STREAM_OPTION_XPORT_API, 0, ¶m);
271
272 if (ret == PHP_STREAM_OPTION_RETURN_OK) {
273 if (error_text) {
274 *error_text = param.outputs.error_text;
275 }
276
277 return param.outputs.returncode;
278 }
279
280 return ret;
281 }
282
283 /* Get the next client and their address (as a string) */
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)284 PHPAPI int php_stream_xport_accept(php_stream *stream, php_stream **client,
285 char **textaddr, int *textaddrlen,
286 void **addr, socklen_t *addrlen,
287 struct timeval *timeout,
288 char **error_text
289 TSRMLS_DC)
290 {
291 php_stream_xport_param param;
292 int ret;
293
294 memset(¶m, 0, sizeof(param));
295
296 param.op = STREAM_XPORT_OP_ACCEPT;
297 param.inputs.timeout = timeout;
298 param.want_addr = addr ? 1 : 0;
299 param.want_textaddr = textaddr ? 1 : 0;
300 param.want_errortext = error_text ? 1 : 0;
301
302 ret = php_stream_set_option(stream, PHP_STREAM_OPTION_XPORT_API, 0, ¶m);
303
304 if (ret == PHP_STREAM_OPTION_RETURN_OK) {
305 *client = param.outputs.client;
306 if (addr) {
307 *addr = param.outputs.addr;
308 *addrlen = param.outputs.addrlen;
309 }
310 if (textaddr) {
311 *textaddr = param.outputs.textaddr;
312 *textaddrlen = param.outputs.textaddrlen;
313 }
314 if (error_text) {
315 *error_text = param.outputs.error_text;
316 }
317
318 return param.outputs.returncode;
319 }
320 return ret;
321 }
322
php_stream_xport_get_name(php_stream * stream,int want_peer,char ** textaddr,int * textaddrlen,void ** addr,socklen_t * addrlen TSRMLS_DC)323 PHPAPI int php_stream_xport_get_name(php_stream *stream, int want_peer,
324 char **textaddr, int *textaddrlen,
325 void **addr, socklen_t *addrlen
326 TSRMLS_DC)
327 {
328 php_stream_xport_param param;
329 int ret;
330
331 memset(¶m, 0, sizeof(param));
332
333 param.op = want_peer ? STREAM_XPORT_OP_GET_PEER_NAME : STREAM_XPORT_OP_GET_NAME;
334 param.want_addr = addr ? 1 : 0;
335 param.want_textaddr = textaddr ? 1 : 0;
336
337 ret = php_stream_set_option(stream, PHP_STREAM_OPTION_XPORT_API, 0, ¶m);
338
339 if (ret == PHP_STREAM_OPTION_RETURN_OK) {
340 if (addr) {
341 *addr = param.outputs.addr;
342 *addrlen = param.outputs.addrlen;
343 }
344 if (textaddr) {
345 *textaddr = param.outputs.textaddr;
346 *textaddrlen = param.outputs.textaddrlen;
347 }
348
349 return param.outputs.returncode;
350 }
351 return ret;
352 }
353
php_stream_xport_crypto_setup(php_stream * stream,php_stream_xport_crypt_method_t crypto_method,php_stream * session_stream TSRMLS_DC)354 PHPAPI int php_stream_xport_crypto_setup(php_stream *stream, php_stream_xport_crypt_method_t crypto_method, php_stream *session_stream TSRMLS_DC)
355 {
356 php_stream_xport_crypto_param param;
357 int ret;
358
359 memset(¶m, 0, sizeof(param));
360 param.op = STREAM_XPORT_CRYPTO_OP_SETUP;
361 param.inputs.method = crypto_method;
362 param.inputs.session = session_stream;
363
364 ret = php_stream_set_option(stream, PHP_STREAM_OPTION_CRYPTO_API, 0, ¶m);
365
366 if (ret == PHP_STREAM_OPTION_RETURN_OK) {
367 return param.outputs.returncode;
368 }
369
370 php_error_docref("streams.crypto" TSRMLS_CC, E_WARNING, "this stream does not support SSL/crypto");
371
372 return ret;
373 }
374
php_stream_xport_crypto_enable(php_stream * stream,int activate TSRMLS_DC)375 PHPAPI int php_stream_xport_crypto_enable(php_stream *stream, int activate TSRMLS_DC)
376 {
377 php_stream_xport_crypto_param param;
378 int ret;
379
380 memset(¶m, 0, sizeof(param));
381 param.op = STREAM_XPORT_CRYPTO_OP_ENABLE;
382 param.inputs.activate = activate;
383
384 ret = php_stream_set_option(stream, PHP_STREAM_OPTION_CRYPTO_API, 0, ¶m);
385
386 if (ret == PHP_STREAM_OPTION_RETURN_OK) {
387 return param.outputs.returncode;
388 }
389
390 php_error_docref("streams.crypto" TSRMLS_CC, E_WARNING, "this stream does not support SSL/crypto");
391
392 return ret;
393 }
394
395 /* Similar to recv() system call; read data from the stream, optionally
396 * peeking, optionally retrieving OOB data */
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)397 PHPAPI int php_stream_xport_recvfrom(php_stream *stream, char *buf, size_t buflen,
398 long flags, void **addr, socklen_t *addrlen, char **textaddr, int *textaddrlen
399 TSRMLS_DC)
400 {
401 php_stream_xport_param param;
402 int ret = 0;
403 int recvd_len = 0;
404 #if 0
405 int oob;
406
407 if (flags == 0 && addr == NULL) {
408 return php_stream_read(stream, buf, buflen);
409 }
410
411 if (stream->readfilters.head) {
412 php_error_docref(NULL TSRMLS_CC, E_WARNING, "cannot peek or fetch OOB data from a filtered stream");
413 return -1;
414 }
415
416 oob = (flags & STREAM_OOB) == STREAM_OOB;
417
418 if (!oob && addr == NULL) {
419 /* must be peeking at regular data; copy content from the buffer
420 * first, then adjust the pointer/len before handing off to the
421 * stream */
422 recvd_len = stream->writepos - stream->readpos;
423 if (recvd_len > buflen) {
424 recvd_len = buflen;
425 }
426 if (recvd_len) {
427 memcpy(buf, stream->readbuf, recvd_len);
428 buf += recvd_len;
429 buflen -= recvd_len;
430 }
431 /* if we filled their buffer, return */
432 if (buflen == 0) {
433 return recvd_len;
434 }
435 }
436 #endif
437
438 /* otherwise, we are going to bypass the buffer */
439
440 memset(¶m, 0, sizeof(param));
441
442 param.op = STREAM_XPORT_OP_RECV;
443 param.want_addr = addr ? 1 : 0;
444 param.want_textaddr = textaddr ? 1 : 0;
445 param.inputs.buf = buf;
446 param.inputs.buflen = buflen;
447 param.inputs.flags = flags;
448
449 ret = php_stream_set_option(stream, PHP_STREAM_OPTION_XPORT_API, 0, ¶m);
450
451 if (ret == PHP_STREAM_OPTION_RETURN_OK) {
452 if (addr) {
453 *addr = param.outputs.addr;
454 *addrlen = param.outputs.addrlen;
455 }
456 if (textaddr) {
457 *textaddr = param.outputs.textaddr;
458 *textaddrlen = param.outputs.textaddrlen;
459 }
460 return recvd_len + param.outputs.returncode;
461 }
462 return recvd_len ? recvd_len : -1;
463 }
464
465 /* Similar to send() system call; send data to the stream, optionally
466 * sending it as OOB data */
php_stream_xport_sendto(php_stream * stream,const char * buf,size_t buflen,long flags,void * addr,socklen_t addrlen TSRMLS_DC)467 PHPAPI int php_stream_xport_sendto(php_stream *stream, const char *buf, size_t buflen,
468 long flags, void *addr, socklen_t addrlen TSRMLS_DC)
469 {
470 php_stream_xport_param param;
471 int ret = 0;
472 int oob;
473
474 #if 0
475 if (flags == 0 && addr == NULL) {
476 return php_stream_write(stream, buf, buflen);
477 }
478 #endif
479
480 oob = (flags & STREAM_OOB) == STREAM_OOB;
481
482 if ((oob || addr) && stream->writefilters.head) {
483 php_error_docref(NULL TSRMLS_CC, E_WARNING, "cannot write OOB data, or data to a targeted address on a filtered stream");
484 return -1;
485 }
486
487 memset(¶m, 0, sizeof(param));
488
489 param.op = STREAM_XPORT_OP_SEND;
490 param.want_addr = addr ? 1 : 0;
491 param.inputs.buf = (char*)buf;
492 param.inputs.buflen = buflen;
493 param.inputs.flags = flags;
494 param.inputs.addr = addr;
495 param.inputs.addrlen = addrlen;
496
497 ret = php_stream_set_option(stream, PHP_STREAM_OPTION_XPORT_API, 0, ¶m);
498
499 if (ret == PHP_STREAM_OPTION_RETURN_OK) {
500 return param.outputs.returncode;
501 }
502 return -1;
503 }
504
505 /* Similar to shutdown() system call; shut down part of a full-duplex
506 * connection */
php_stream_xport_shutdown(php_stream * stream,stream_shutdown_t how TSRMLS_DC)507 PHPAPI int php_stream_xport_shutdown(php_stream *stream, stream_shutdown_t how TSRMLS_DC)
508 {
509 php_stream_xport_param param;
510 int ret = 0;
511
512 memset(¶m, 0, sizeof(param));
513
514 param.op = STREAM_XPORT_OP_SHUTDOWN;
515 param.how = how;
516
517 ret = php_stream_set_option(stream, PHP_STREAM_OPTION_XPORT_API, 0, ¶m);
518
519 if (ret == PHP_STREAM_OPTION_RETURN_OK) {
520 return param.outputs.returncode;
521 }
522 return -1;
523 }
524
525 /*
526 * Local variables:
527 * tab-width: 4
528 * c-basic-offset: 4
529 * End:
530 * vim600: noet sw=4 ts=4 fdm=marker
531 * vim<600: noet sw=4 ts=4
532 */
533
