1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 7 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 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 | Authors: Sascha Schumann <sascha@schumann.cx> |
16 | Andrei Zmievski <andrei@php.net> |
17 +----------------------------------------------------------------------+
18 */
19
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include "php.h"
25
26 #ifdef PHP_WIN32
27 # include "win32/winutil.h"
28 # include "win32/time.h"
29 #else
30 # include <sys/time.h>
31 #endif
32
33 #include <sys/stat.h>
34 #include <fcntl.h>
35
36 #include "php_ini.h"
37 #include "SAPI.h"
38 #include "rfc1867.h"
39 #include "php_variables.h"
40 #include "php_session.h"
41 #include "ext/standard/php_random.h"
42 #include "ext/standard/php_var.h"
43 #include "ext/date/php_date.h"
44 #include "ext/standard/php_lcg.h"
45 #include "ext/standard/url_scanner_ex.h"
46 #include "ext/standard/info.h"
47 #include "zend_smart_str.h"
48 #include "ext/standard/url.h"
49 #include "ext/standard/basic_functions.h"
50 #include "ext/standard/head.h"
51
52 #include "mod_files.h"
53 #include "mod_user.h"
54
55 #ifdef HAVE_LIBMM
56 #include "mod_mm.h"
57 #endif
58
59 PHPAPI ZEND_DECLARE_MODULE_GLOBALS(ps)
60
61 static int php_session_rfc1867_callback(unsigned int event, void *event_data, void **extra);
62 static int (*php_session_rfc1867_orig_callback)(unsigned int event, void *event_data, void **extra);
63 static void php_session_track_init(void);
64
65 /* SessionHandler class */
66 zend_class_entry *php_session_class_entry;
67
68 /* SessionHandlerInterface */
69 zend_class_entry *php_session_iface_entry;
70
71 /* SessionIdInterface */
72 zend_class_entry *php_session_id_iface_entry;
73
74 /* SessionUpdateTimestampHandler class */
75 zend_class_entry *php_session_update_timestamp_class_entry;
76
77 /* SessionUpdateTimestampInterface */
78 zend_class_entry *php_session_update_timestamp_iface_entry;
79
80 #define PS_MAX_SID_LENGTH 256
81
82 /* ***********
83 * Helpers *
84 *********** */
85
86 #define IF_SESSION_VARS() \
87 if (Z_ISREF_P(&PS(http_session_vars)) && Z_TYPE_P(Z_REFVAL(PS(http_session_vars))) == IS_ARRAY)
88
89 #define SESSION_CHECK_ACTIVE_STATE \
90 if (PS(session_status) == php_session_active) { \
91 php_error_docref(NULL, E_WARNING, "A session is active. You cannot change the session module's ini settings at this time"); \
92 return FAILURE; \
93 }
94
95 #define SESSION_CHECK_OUTPUT_STATE \
96 if (SG(headers_sent) && stage != ZEND_INI_STAGE_DEACTIVATE) { \
97 php_error_docref(NULL, E_WARNING, "Headers already sent. You cannot change the session module's ini settings at this time"); \
98 return FAILURE; \
99 }
100
101 #define APPLY_TRANS_SID (PS(use_trans_sid) && !PS(use_only_cookies))
102
103 static int php_session_send_cookie(void);
104 static int php_session_abort(void);
105
106 /* Initialized in MINIT, readonly otherwise. */
107 static int my_module_number = 0;
108
109 /* Dispatched by RINIT and by php_session_destroy */
php_rinit_session_globals(void)110 static inline void php_rinit_session_globals(void) /* {{{ */
111 {
112 /* Do NOT init PS(mod_user_names) here! */
113 /* TODO: These could be moved to MINIT and removed. These should be initialized by php_rshutdown_session_globals() always when execution is finished. */
114 PS(id) = NULL;
115 PS(session_status) = php_session_none;
116 PS(in_save_handler) = 0;
117 PS(set_handler) = 0;
118 PS(mod_data) = NULL;
119 PS(mod_user_is_open) = 0;
120 PS(define_sid) = 1;
121 PS(session_vars) = NULL;
122 PS(module_number) = my_module_number;
123 ZVAL_UNDEF(&PS(http_session_vars));
124 }
125 /* }}} */
126
127 /* Dispatched by RSHUTDOWN and by php_session_destroy */
php_rshutdown_session_globals(void)128 static inline void php_rshutdown_session_globals(void) /* {{{ */
129 {
130 /* Do NOT destroy PS(mod_user_names) here! */
131 if (!Z_ISUNDEF(PS(http_session_vars))) {
132 zval_ptr_dtor(&PS(http_session_vars));
133 ZVAL_UNDEF(&PS(http_session_vars));
134 }
135 if (PS(mod_data) || PS(mod_user_implemented)) {
136 zend_try {
137 PS(mod)->s_close(&PS(mod_data));
138 } zend_end_try();
139 }
140 if (PS(id)) {
141 zend_string_release_ex(PS(id), 0);
142 PS(id) = NULL;
143 }
144
145 if (PS(session_vars)) {
146 zend_string_release_ex(PS(session_vars), 0);
147 PS(session_vars) = NULL;
148 }
149
150 /* User save handlers may end up directly here by misuse, bugs in user script, etc. */
151 /* Set session status to prevent error while restoring save handler INI value. */
152 PS(session_status) = php_session_none;
153 }
154 /* }}} */
155
php_session_destroy(void)156 PHPAPI int php_session_destroy(void) /* {{{ */
157 {
158 int retval = SUCCESS;
159
160 if (PS(session_status) != php_session_active) {
161 php_error_docref(NULL, E_WARNING, "Trying to destroy uninitialized session");
162 return FAILURE;
163 }
164
165 if (PS(id) && PS(mod)->s_destroy(&PS(mod_data), PS(id)) == FAILURE) {
166 retval = FAILURE;
167 php_error_docref(NULL, E_WARNING, "Session object destruction failed");
168 }
169
170 php_rshutdown_session_globals();
171 php_rinit_session_globals();
172
173 return retval;
174 }
175 /* }}} */
176
php_add_session_var(zend_string * name)177 PHPAPI void php_add_session_var(zend_string *name) /* {{{ */
178 {
179 IF_SESSION_VARS() {
180 zval *sess_var = Z_REFVAL(PS(http_session_vars));
181 SEPARATE_ARRAY(sess_var);
182 if (!zend_hash_exists(Z_ARRVAL_P(sess_var), name)) {
183 zval empty_var;
184 ZVAL_NULL(&empty_var);
185 zend_hash_update(Z_ARRVAL_P(sess_var), name, &empty_var);
186 }
187 }
188 }
189 /* }}} */
190
php_set_session_var(zend_string * name,zval * state_val,php_unserialize_data_t * var_hash)191 PHPAPI zval* php_set_session_var(zend_string *name, zval *state_val, php_unserialize_data_t *var_hash) /* {{{ */
192 {
193 IF_SESSION_VARS() {
194 zval *sess_var = Z_REFVAL(PS(http_session_vars));
195 SEPARATE_ARRAY(sess_var);
196 return zend_hash_update(Z_ARRVAL_P(sess_var), name, state_val);
197 }
198 return NULL;
199 }
200 /* }}} */
201
php_get_session_var(zend_string * name)202 PHPAPI zval* php_get_session_var(zend_string *name) /* {{{ */
203 {
204 IF_SESSION_VARS() {
205 return zend_hash_find(Z_ARRVAL_P(Z_REFVAL(PS(http_session_vars))), name);
206 }
207 return NULL;
208 }
209 /* }}} */
210
php_session_track_init(void)211 static void php_session_track_init(void) /* {{{ */
212 {
213 zval session_vars;
214 zend_string *var_name = zend_string_init("_SESSION", sizeof("_SESSION") - 1, 0);
215 /* Unconditionally destroy existing array -- possible dirty data */
216 zend_delete_global_variable(var_name);
217
218 if (!Z_ISUNDEF(PS(http_session_vars))) {
219 zval_ptr_dtor(&PS(http_session_vars));
220 }
221
222 array_init(&session_vars);
223 ZVAL_NEW_REF(&PS(http_session_vars), &session_vars);
224 Z_ADDREF_P(&PS(http_session_vars));
225 zend_hash_update_ind(&EG(symbol_table), var_name, &PS(http_session_vars));
226 zend_string_release_ex(var_name, 0);
227 }
228 /* }}} */
229
php_session_encode(void)230 static zend_string *php_session_encode(void) /* {{{ */
231 {
232 IF_SESSION_VARS() {
233 if (!PS(serializer)) {
234 php_error_docref(NULL, E_WARNING, "Unknown session.serialize_handler. Failed to encode session object");
235 return NULL;
236 }
237 return PS(serializer)->encode();
238 } else {
239 php_error_docref(NULL, E_WARNING, "Cannot encode non-existent session");
240 }
241 return NULL;
242 }
243 /* }}} */
244
php_session_decode(zend_string * data)245 static int php_session_decode(zend_string *data) /* {{{ */
246 {
247 if (!PS(serializer)) {
248 php_error_docref(NULL, E_WARNING, "Unknown session.serialize_handler. Failed to decode session object");
249 return FAILURE;
250 }
251 if (PS(serializer)->decode(ZSTR_VAL(data), ZSTR_LEN(data)) == FAILURE) {
252 php_session_destroy();
253 php_session_track_init();
254 php_error_docref(NULL, E_WARNING, "Failed to decode session object. Session has been destroyed");
255 return FAILURE;
256 }
257 return SUCCESS;
258 }
259 /* }}} */
260
261 /*
262 * Note that we cannot use the BASE64 alphabet here, because
263 * it contains "/" and "+": both are unacceptable for simple inclusion
264 * into URLs.
265 */
266
267 static char hexconvtab[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ,-";
268
bin_to_readable(unsigned char * in,size_t inlen,char * out,size_t outlen,char nbits)269 static void bin_to_readable(unsigned char *in, size_t inlen, char *out, size_t outlen, char nbits) /* {{{ */
270 {
271 unsigned char *p, *q;
272 unsigned short w;
273 int mask;
274 int have;
275
276 p = (unsigned char *)in;
277 q = (unsigned char *)in + inlen;
278
279 w = 0;
280 have = 0;
281 mask = (1 << nbits) - 1;
282
283 while (outlen--) {
284 if (have < nbits) {
285 if (p < q) {
286 w |= *p++ << have;
287 have += 8;
288 } else {
289 /* Should never happen. Input must be large enough. */
290 ZEND_ASSERT(0);
291 break;
292 }
293 }
294
295 /* consume nbits */
296 *out++ = hexconvtab[w & mask];
297 w >>= nbits;
298 have -= nbits;
299 }
300
301 *out = '\0';
302 }
303 /* }}} */
304
305 #define PS_EXTRA_RAND_BYTES 60
306
php_session_create_id(PS_CREATE_SID_ARGS)307 PHPAPI zend_string *php_session_create_id(PS_CREATE_SID_ARGS) /* {{{ */
308 {
309 unsigned char rbuf[PS_MAX_SID_LENGTH + PS_EXTRA_RAND_BYTES];
310 zend_string *outid;
311
312 /* It would be enough to read ceil(sid_length * sid_bits_per_character / 8) bytes here.
313 * We read sid_length bytes instead for simplicity. */
314 /* Read additional PS_EXTRA_RAND_BYTES just in case CSPRNG is not safe enough */
315 if (php_random_bytes_throw(rbuf, PS(sid_length) + PS_EXTRA_RAND_BYTES) == FAILURE) {
316 return NULL;
317 }
318
319 outid = zend_string_alloc(PS(sid_length), 0);
320 bin_to_readable(
321 rbuf, PS(sid_length),
322 ZSTR_VAL(outid), ZSTR_LEN(outid),
323 (char)PS(sid_bits_per_character));
324
325 return outid;
326 }
327 /* }}} */
328
329 /* Default session id char validation function allowed by ps_modules.
330 * If you change the logic here, please also update the error message in
331 * ps_modules appropriately */
php_session_valid_key(const char * key)332 PHPAPI int php_session_valid_key(const char *key) /* {{{ */
333 {
334 size_t len;
335 const char *p;
336 char c;
337 int ret = SUCCESS;
338
339 for (p = key; (c = *p); p++) {
340 /* valid characters are a..z,A..Z,0..9 */
341 if (!((c >= 'a' && c <= 'z')
342 || (c >= 'A' && c <= 'Z')
343 || (c >= '0' && c <= '9')
344 || c == ','
345 || c == '-')) {
346 ret = FAILURE;
347 break;
348 }
349 }
350
351 len = p - key;
352
353 /* Somewhat arbitrary length limit here, but should be way more than
354 anyone needs and avoids file-level warnings later on if we exceed MAX_PATH */
355 if (len == 0 || len > PS_MAX_SID_LENGTH) {
356 ret = FAILURE;
357 }
358
359 return ret;
360 }
361 /* }}} */
362
363
php_session_gc(zend_bool immediate)364 static zend_long php_session_gc(zend_bool immediate) /* {{{ */
365 {
366 int nrand;
367 zend_long num = -1;
368
369 /* GC must be done before reading session data. */
370 if ((PS(mod_data) || PS(mod_user_implemented))) {
371 if (immediate) {
372 PS(mod)->s_gc(&PS(mod_data), PS(gc_maxlifetime), &num);
373 return num;
374 }
375 nrand = (zend_long) ((float) PS(gc_divisor) * php_combined_lcg());
376 if (PS(gc_probability) > 0 && nrand < PS(gc_probability)) {
377 PS(mod)->s_gc(&PS(mod_data), PS(gc_maxlifetime), &num);
378 }
379 }
380 return num;
381 } /* }}} */
382
php_session_initialize(void)383 static int php_session_initialize(void) /* {{{ */
384 {
385 zend_string *val = NULL;
386
387 PS(session_status) = php_session_active;
388
389 if (!PS(mod)) {
390 PS(session_status) = php_session_disabled;
391 php_error_docref(NULL, E_WARNING, "No storage module chosen - failed to initialize session");
392 return FAILURE;
393 }
394
395 /* Open session handler first */
396 if (PS(mod)->s_open(&PS(mod_data), PS(save_path), PS(session_name)) == FAILURE
397 /* || PS(mod_data) == NULL */ /* FIXME: open must set valid PS(mod_data) with success */
398 ) {
399 php_session_abort();
400 php_error_docref(NULL, E_WARNING, "Failed to initialize storage module: %s (path: %s)", PS(mod)->s_name, PS(save_path));
401 return FAILURE;
402 }
403
404 /* If there is no ID, use session module to create one */
405 if (!PS(id) || !ZSTR_VAL(PS(id))[0]) {
406 if (PS(id)) {
407 zend_string_release_ex(PS(id), 0);
408 }
409 PS(id) = PS(mod)->s_create_sid(&PS(mod_data));
410 if (!PS(id)) {
411 php_session_abort();
412 zend_throw_error(NULL, "Failed to create session ID: %s (path: %s)", PS(mod)->s_name, PS(save_path));
413 return FAILURE;
414 }
415 if (PS(use_cookies)) {
416 PS(send_cookie) = 1;
417 }
418 } else if (PS(use_strict_mode) && PS(mod)->s_validate_sid &&
419 PS(mod)->s_validate_sid(&PS(mod_data), PS(id)) == FAILURE) {
420 if (PS(id)) {
421 zend_string_release_ex(PS(id), 0);
422 }
423 PS(id) = PS(mod)->s_create_sid(&PS(mod_data));
424 if (!PS(id)) {
425 PS(id) = php_session_create_id(NULL);
426 }
427 if (PS(use_cookies)) {
428 PS(send_cookie) = 1;
429 }
430 }
431
432 if (php_session_reset_id() == FAILURE) {
433 php_session_abort();
434 return FAILURE;
435 }
436
437 /* Read data */
438 php_session_track_init();
439 if (PS(mod)->s_read(&PS(mod_data), PS(id), &val, PS(gc_maxlifetime)) == FAILURE) {
440 php_session_abort();
441 /* FYI: Some broken save handlers return FAILURE for non-existent session ID, this is incorrect */
442 php_error_docref(NULL, E_WARNING, "Failed to read session data: %s (path: %s)", PS(mod)->s_name, PS(save_path));
443 return FAILURE;
444 }
445
446 /* GC must be done after read */
447 php_session_gc(0);
448
449 if (PS(session_vars)) {
450 zend_string_release_ex(PS(session_vars), 0);
451 PS(session_vars) = NULL;
452 }
453 if (val) {
454 if (PS(lazy_write)) {
455 PS(session_vars) = zend_string_copy(val);
456 }
457 php_session_decode(val);
458 zend_string_release_ex(val, 0);
459 }
460 return SUCCESS;
461 }
462 /* }}} */
463
php_session_save_current_state(int write)464 static void php_session_save_current_state(int write) /* {{{ */
465 {
466 int ret = FAILURE;
467
468 if (write) {
469 IF_SESSION_VARS() {
470 if (PS(mod_data) || PS(mod_user_implemented)) {
471 zend_string *val;
472
473 val = php_session_encode();
474 if (val) {
475 if (PS(lazy_write) && PS(session_vars)
476 && PS(mod)->s_update_timestamp
477 && PS(mod)->s_update_timestamp != php_session_update_timestamp
478 && ZSTR_LEN(val) == ZSTR_LEN(PS(session_vars))
479 && !memcmp(ZSTR_VAL(val), ZSTR_VAL(PS(session_vars)), ZSTR_LEN(val))
480 ) {
481 ret = PS(mod)->s_update_timestamp(&PS(mod_data), PS(id), val, PS(gc_maxlifetime));
482 } else {
483 ret = PS(mod)->s_write(&PS(mod_data), PS(id), val, PS(gc_maxlifetime));
484 }
485 zend_string_release_ex(val, 0);
486 } else {
487 ret = PS(mod)->s_write(&PS(mod_data), PS(id), ZSTR_EMPTY_ALLOC(), PS(gc_maxlifetime));
488 }
489 }
490
491 if ((ret == FAILURE) && !EG(exception)) {
492 if (!PS(mod_user_implemented)) {
493 php_error_docref(NULL, E_WARNING, "Failed to write session data (%s). Please "
494 "verify that the current setting of session.save_path "
495 "is correct (%s)",
496 PS(mod)->s_name,
497 PS(save_path));
498 } else {
499 php_error_docref(NULL, E_WARNING, "Failed to write session data using user "
500 "defined save handler. (session.save_path: %s)", PS(save_path));
501 }
502 }
503 }
504 }
505
506 if (PS(mod_data) || PS(mod_user_implemented)) {
507 PS(mod)->s_close(&PS(mod_data));
508 }
509 }
510 /* }}} */
511
php_session_normalize_vars()512 static void php_session_normalize_vars() /* {{{ */
513 {
514 PS_ENCODE_VARS;
515
516 IF_SESSION_VARS() {
517 PS_ENCODE_LOOP(
518 if (Z_TYPE_P(struc) == IS_PTR) {
519 zval *zv = (zval *)Z_PTR_P(struc);
520 ZVAL_COPY_VALUE(struc, zv);
521 ZVAL_UNDEF(zv);
522 }
523 );
524 }
525 }
526 /* }}} */
527
528 /* *************************
529 * INI Settings/Handlers *
530 ************************* */
531
PHP_INI_MH(OnUpdateSaveHandler)532 static PHP_INI_MH(OnUpdateSaveHandler) /* {{{ */
533 {
534 const ps_module *tmp;
535
536 SESSION_CHECK_ACTIVE_STATE;
537 SESSION_CHECK_OUTPUT_STATE;
538
539 tmp = _php_find_ps_module(ZSTR_VAL(new_value));
540
541 if (PG(modules_activated) && !tmp) {
542 int err_type;
543
544 if (stage == ZEND_INI_STAGE_RUNTIME) {
545 err_type = E_WARNING;
546 } else {
547 err_type = E_ERROR;
548 }
549
550 /* Do not output error when restoring ini options. */
551 if (stage != ZEND_INI_STAGE_DEACTIVATE) {
552 php_error_docref(NULL, err_type, "Cannot find save handler '%s'", ZSTR_VAL(new_value));
553 }
554
555 return FAILURE;
556 }
557
558 /* "user" save handler should not be set by user */
559 if (!PS(set_handler) && tmp == ps_user_ptr) {
560 php_error_docref(NULL, E_RECOVERABLE_ERROR, "Cannot set 'user' save handler by ini_set() or session_module_name()");
561 return FAILURE;
562 }
563
564 PS(default_mod) = PS(mod);
565 PS(mod) = tmp;
566
567 return SUCCESS;
568 }
569 /* }}} */
570
PHP_INI_MH(OnUpdateSerializer)571 static PHP_INI_MH(OnUpdateSerializer) /* {{{ */
572 {
573 const ps_serializer *tmp;
574
575 SESSION_CHECK_ACTIVE_STATE;
576 SESSION_CHECK_OUTPUT_STATE;
577
578 tmp = _php_find_ps_serializer(ZSTR_VAL(new_value));
579
580 if (PG(modules_activated) && !tmp) {
581 int err_type;
582
583 if (stage == ZEND_INI_STAGE_RUNTIME) {
584 err_type = E_WARNING;
585 } else {
586 err_type = E_ERROR;
587 }
588
589 /* Do not output error when restoring ini options. */
590 if (stage != ZEND_INI_STAGE_DEACTIVATE) {
591 php_error_docref(NULL, err_type, "Cannot find serialization handler '%s'", ZSTR_VAL(new_value));
592 }
593 return FAILURE;
594 }
595 PS(serializer) = tmp;
596
597 return SUCCESS;
598 }
599 /* }}} */
600
PHP_INI_MH(OnUpdateTransSid)601 static PHP_INI_MH(OnUpdateTransSid) /* {{{ */
602 {
603 SESSION_CHECK_ACTIVE_STATE;
604 SESSION_CHECK_OUTPUT_STATE;
605
606 if (!strncasecmp(ZSTR_VAL(new_value), "on", sizeof("on"))) {
607 PS(use_trans_sid) = (zend_bool) 1;
608 } else {
609 PS(use_trans_sid) = (zend_bool) atoi(ZSTR_VAL(new_value));
610 }
611
612 return SUCCESS;
613 }
614 /* }}} */
615
616
PHP_INI_MH(OnUpdateSaveDir)617 static PHP_INI_MH(OnUpdateSaveDir) /* {{{ */
618 {
619 SESSION_CHECK_ACTIVE_STATE;
620 SESSION_CHECK_OUTPUT_STATE;
621
622 /* Only do the safemode/open_basedir check at runtime */
623 if (stage == PHP_INI_STAGE_RUNTIME || stage == PHP_INI_STAGE_HTACCESS) {
624 char *p;
625
626 if (memchr(ZSTR_VAL(new_value), '\0', ZSTR_LEN(new_value)) != NULL) {
627 return FAILURE;
628 }
629
630 /* we do not use zend_memrchr() since path can contain ; itself */
631 if ((p = strchr(ZSTR_VAL(new_value), ';'))) {
632 char *p2;
633 p++;
634 if ((p2 = strchr(p, ';'))) {
635 p = p2 + 1;
636 }
637 } else {
638 p = ZSTR_VAL(new_value);
639 }
640
641 if (PG(open_basedir) && *p && php_check_open_basedir(p)) {
642 return FAILURE;
643 }
644 }
645
646 return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
647 }
648 /* }}} */
649
650
PHP_INI_MH(OnUpdateName)651 static PHP_INI_MH(OnUpdateName) /* {{{ */
652 {
653 SESSION_CHECK_ACTIVE_STATE;
654 SESSION_CHECK_OUTPUT_STATE;
655
656 /* Numeric session.name won't work at all */
657 if ((!ZSTR_LEN(new_value) || is_numeric_string(ZSTR_VAL(new_value), ZSTR_LEN(new_value), NULL, NULL, 0))) {
658 int err_type;
659
660 if (stage == ZEND_INI_STAGE_RUNTIME || stage == ZEND_INI_STAGE_ACTIVATE || stage == ZEND_INI_STAGE_STARTUP) {
661 err_type = E_WARNING;
662 } else {
663 err_type = E_ERROR;
664 }
665
666 /* Do not output error when restoring ini options. */
667 if (stage != ZEND_INI_STAGE_DEACTIVATE) {
668 php_error_docref(NULL, err_type, "session.name cannot be a numeric or empty '%s'", ZSTR_VAL(new_value));
669 }
670 return FAILURE;
671 }
672
673 return OnUpdateStringUnempty(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
674 }
675 /* }}} */
676
677
PHP_INI_MH(OnUpdateCookieLifetime)678 static PHP_INI_MH(OnUpdateCookieLifetime) /* {{{ */
679 {
680 SESSION_CHECK_ACTIVE_STATE;
681 SESSION_CHECK_OUTPUT_STATE;
682 if (atol(ZSTR_VAL(new_value)) < 0) {
683 php_error_docref(NULL, E_WARNING, "CookieLifetime cannot be negative");
684 return FAILURE;
685 }
686 return OnUpdateLongGEZero(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
687 }
688 /* }}} */
689
690
PHP_INI_MH(OnUpdateSessionLong)691 static PHP_INI_MH(OnUpdateSessionLong) /* {{{ */
692 {
693 SESSION_CHECK_ACTIVE_STATE;
694 SESSION_CHECK_OUTPUT_STATE;
695 return OnUpdateLong(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
696 }
697 /* }}} */
698
699
PHP_INI_MH(OnUpdateSessionString)700 static PHP_INI_MH(OnUpdateSessionString) /* {{{ */
701 {
702 SESSION_CHECK_ACTIVE_STATE;
703 SESSION_CHECK_OUTPUT_STATE;
704 return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
705 }
706 /* }}} */
707
708
PHP_INI_MH(OnUpdateSessionBool)709 static PHP_INI_MH(OnUpdateSessionBool) /* {{{ */
710 {
711 SESSION_CHECK_OUTPUT_STATE;
712 SESSION_CHECK_ACTIVE_STATE;
713 return OnUpdateBool(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
714 }
715 /* }}} */
716
717
PHP_INI_MH(OnUpdateSidLength)718 static PHP_INI_MH(OnUpdateSidLength) /* {{{ */
719 {
720 zend_long val;
721 char *endptr = NULL;
722
723 SESSION_CHECK_OUTPUT_STATE;
724 SESSION_CHECK_ACTIVE_STATE;
725 val = ZEND_STRTOL(ZSTR_VAL(new_value), &endptr, 10);
726 if (endptr && (*endptr == '\0')
727 && val >= 22 && val <= PS_MAX_SID_LENGTH) {
728 /* Numeric value */
729 PS(sid_length) = val;
730 return SUCCESS;
731 }
732
733 php_error_docref(NULL, E_WARNING, "session.configuration 'session.sid_length' must be between 22 and 256.");
734 return FAILURE;
735 }
736 /* }}} */
737
PHP_INI_MH(OnUpdateSidBits)738 static PHP_INI_MH(OnUpdateSidBits) /* {{{ */
739 {
740 zend_long val;
741 char *endptr = NULL;
742
743 SESSION_CHECK_OUTPUT_STATE;
744 SESSION_CHECK_ACTIVE_STATE;
745 val = ZEND_STRTOL(ZSTR_VAL(new_value), &endptr, 10);
746 if (endptr && (*endptr == '\0')
747 && val >= 4 && val <=6) {
748 /* Numeric value */
749 PS(sid_bits_per_character) = val;
750 return SUCCESS;
751 }
752
753 php_error_docref(NULL, E_WARNING, "session.configuration 'session.sid_bits_per_character' must be between 4 and 6.");
754 return FAILURE;
755 }
756 /* }}} */
757
758
PHP_INI_MH(OnUpdateLazyWrite)759 static PHP_INI_MH(OnUpdateLazyWrite) /* {{{ */
760 {
761 SESSION_CHECK_ACTIVE_STATE;
762 SESSION_CHECK_OUTPUT_STATE;
763 return OnUpdateBool(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
764 }
765 /* }}} */
766
767
768
PHP_INI_MH(OnUpdateRfc1867Freq)769 static PHP_INI_MH(OnUpdateRfc1867Freq) /* {{{ */
770 {
771 int tmp;
772 tmp = zend_atoi(ZSTR_VAL(new_value), ZSTR_LEN(new_value));
773 if(tmp < 0) {
774 php_error_docref(NULL, E_WARNING, "session.upload_progress.freq must be greater than or equal to zero");
775 return FAILURE;
776 }
777 if(ZSTR_LEN(new_value) > 0 && ZSTR_VAL(new_value)[ZSTR_LEN(new_value)-1] == '%') {
778 if(tmp > 100) {
779 php_error_docref(NULL, E_WARNING, "session.upload_progress.freq cannot be over 100%%");
780 return FAILURE;
781 }
782 PS(rfc1867_freq) = -tmp;
783 } else {
784 PS(rfc1867_freq) = tmp;
785 }
786 return SUCCESS;
787 } /* }}} */
788
789 /* {{{ PHP_INI
790 */
791 PHP_INI_BEGIN()
792 STD_PHP_INI_ENTRY("session.save_path", "", PHP_INI_ALL, OnUpdateSaveDir, save_path, php_ps_globals, ps_globals)
793 STD_PHP_INI_ENTRY("session.name", "PHPSESSID", PHP_INI_ALL, OnUpdateName, session_name, php_ps_globals, ps_globals)
794 PHP_INI_ENTRY("session.save_handler", "files", PHP_INI_ALL, OnUpdateSaveHandler)
795 STD_PHP_INI_BOOLEAN("session.auto_start", "0", PHP_INI_PERDIR, OnUpdateBool, auto_start, php_ps_globals, ps_globals)
796 STD_PHP_INI_ENTRY("session.gc_probability", "1", PHP_INI_ALL, OnUpdateSessionLong, gc_probability, php_ps_globals, ps_globals)
797 STD_PHP_INI_ENTRY("session.gc_divisor", "100", PHP_INI_ALL, OnUpdateSessionLong, gc_divisor, php_ps_globals, ps_globals)
798 STD_PHP_INI_ENTRY("session.gc_maxlifetime", "1440", PHP_INI_ALL, OnUpdateSessionLong, gc_maxlifetime, php_ps_globals, ps_globals)
799 PHP_INI_ENTRY("session.serialize_handler", "php", PHP_INI_ALL, OnUpdateSerializer)
800 STD_PHP_INI_ENTRY("session.cookie_lifetime", "0", PHP_INI_ALL, OnUpdateCookieLifetime,cookie_lifetime, php_ps_globals, ps_globals)
801 STD_PHP_INI_ENTRY("session.cookie_path", "/", PHP_INI_ALL, OnUpdateSessionString, cookie_path, php_ps_globals, ps_globals)
802 STD_PHP_INI_ENTRY("session.cookie_domain", "", PHP_INI_ALL, OnUpdateSessionString, cookie_domain, php_ps_globals, ps_globals)
803 STD_PHP_INI_ENTRY("session.cookie_secure", "0", PHP_INI_ALL, OnUpdateSessionBool, cookie_secure, php_ps_globals, ps_globals)
804 STD_PHP_INI_ENTRY("session.cookie_httponly", "0", PHP_INI_ALL, OnUpdateSessionBool, cookie_httponly, php_ps_globals, ps_globals)
805 STD_PHP_INI_ENTRY("session.cookie_samesite", "", PHP_INI_ALL, OnUpdateString, cookie_samesite, php_ps_globals, ps_globals)
806 STD_PHP_INI_ENTRY("session.use_cookies", "1", PHP_INI_ALL, OnUpdateSessionBool, use_cookies, php_ps_globals, ps_globals)
807 STD_PHP_INI_ENTRY("session.use_only_cookies", "1", PHP_INI_ALL, OnUpdateSessionBool, use_only_cookies, php_ps_globals, ps_globals)
808 STD_PHP_INI_ENTRY("session.use_strict_mode", "0", PHP_INI_ALL, OnUpdateSessionBool, use_strict_mode, php_ps_globals, ps_globals)
809 STD_PHP_INI_ENTRY("session.referer_check", "", PHP_INI_ALL, OnUpdateSessionString, extern_referer_chk, php_ps_globals, ps_globals)
810 STD_PHP_INI_ENTRY("session.cache_limiter", "nocache", PHP_INI_ALL, OnUpdateSessionString, cache_limiter, php_ps_globals, ps_globals)
811 STD_PHP_INI_ENTRY("session.cache_expire", "180", PHP_INI_ALL, OnUpdateSessionLong, cache_expire, php_ps_globals, ps_globals)
812 PHP_INI_ENTRY("session.use_trans_sid", "0", PHP_INI_ALL, OnUpdateTransSid)
813 PHP_INI_ENTRY("session.sid_length", "32", PHP_INI_ALL, OnUpdateSidLength)
814 PHP_INI_ENTRY("session.sid_bits_per_character", "4", PHP_INI_ALL, OnUpdateSidBits)
815 STD_PHP_INI_BOOLEAN("session.lazy_write", "1", PHP_INI_ALL, OnUpdateLazyWrite, lazy_write, php_ps_globals, ps_globals)
816
817 /* Upload progress */
818 STD_PHP_INI_BOOLEAN("session.upload_progress.enabled",
819 "1", ZEND_INI_PERDIR, OnUpdateBool, rfc1867_enabled, php_ps_globals, ps_globals)
820 STD_PHP_INI_BOOLEAN("session.upload_progress.cleanup",
821 "1", ZEND_INI_PERDIR, OnUpdateBool, rfc1867_cleanup, php_ps_globals, ps_globals)
822 STD_PHP_INI_ENTRY("session.upload_progress.prefix",
823 "upload_progress_", ZEND_INI_PERDIR, OnUpdateString, rfc1867_prefix, php_ps_globals, ps_globals)
824 STD_PHP_INI_ENTRY("session.upload_progress.name",
825 "PHP_SESSION_UPLOAD_PROGRESS", ZEND_INI_PERDIR, OnUpdateString, rfc1867_name, php_ps_globals, ps_globals)
826 STD_PHP_INI_ENTRY("session.upload_progress.freq", "1%", ZEND_INI_PERDIR, OnUpdateRfc1867Freq, rfc1867_freq, php_ps_globals, ps_globals)
827 STD_PHP_INI_ENTRY("session.upload_progress.min_freq",
828 "1", ZEND_INI_PERDIR, OnUpdateReal, rfc1867_min_freq,php_ps_globals, ps_globals)
829
830 /* Commented out until future discussion */
831 /* PHP_INI_ENTRY("session.encode_sources", "globals,track", PHP_INI_ALL, NULL) */
PHP_INI_END()832 PHP_INI_END()
833 /* }}} */
834
835 /* ***************
836 * Serializers *
837 *************** */
838 PS_SERIALIZER_ENCODE_FUNC(php_serialize) /* {{{ */
839 {
840 smart_str buf = {0};
841 php_serialize_data_t var_hash;
842
843 IF_SESSION_VARS() {
844 PHP_VAR_SERIALIZE_INIT(var_hash);
845 php_var_serialize(&buf, Z_REFVAL(PS(http_session_vars)), &var_hash);
846 PHP_VAR_SERIALIZE_DESTROY(var_hash);
847 }
848 return buf.s;
849 }
850 /* }}} */
851
PS_SERIALIZER_DECODE_FUNC(php_serialize)852 PS_SERIALIZER_DECODE_FUNC(php_serialize) /* {{{ */
853 {
854 const char *endptr = val + vallen;
855 zval session_vars;
856 php_unserialize_data_t var_hash;
857 int result;
858 zend_string *var_name = zend_string_init("_SESSION", sizeof("_SESSION") - 1, 0);
859
860 ZVAL_NULL(&session_vars);
861 PHP_VAR_UNSERIALIZE_INIT(var_hash);
862 result = php_var_unserialize(
863 &session_vars, (const unsigned char **)&val, (const unsigned char *)endptr, &var_hash);
864 PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
865 if (!result) {
866 zval_ptr_dtor(&session_vars);
867 ZVAL_NULL(&session_vars);
868 }
869
870 if (!Z_ISUNDEF(PS(http_session_vars))) {
871 zval_ptr_dtor(&PS(http_session_vars));
872 }
873 if (Z_TYPE(session_vars) == IS_NULL) {
874 array_init(&session_vars);
875 }
876 ZVAL_NEW_REF(&PS(http_session_vars), &session_vars);
877 Z_ADDREF_P(&PS(http_session_vars));
878 zend_hash_update_ind(&EG(symbol_table), var_name, &PS(http_session_vars));
879 zend_string_release_ex(var_name, 0);
880 return SUCCESS;
881 }
882 /* }}} */
883
884 #define PS_BIN_NR_OF_BITS 8
885 #define PS_BIN_UNDEF (1<<(PS_BIN_NR_OF_BITS-1))
886 #define PS_BIN_MAX (PS_BIN_UNDEF-1)
887
PS_SERIALIZER_ENCODE_FUNC(php_binary)888 PS_SERIALIZER_ENCODE_FUNC(php_binary) /* {{{ */
889 {
890 smart_str buf = {0};
891 php_serialize_data_t var_hash;
892 PS_ENCODE_VARS;
893
894 PHP_VAR_SERIALIZE_INIT(var_hash);
895
896 PS_ENCODE_LOOP(
897 if (ZSTR_LEN(key) > PS_BIN_MAX) continue;
898 smart_str_appendc(&buf, (unsigned char)ZSTR_LEN(key));
899 smart_str_appendl(&buf, ZSTR_VAL(key), ZSTR_LEN(key));
900 php_var_serialize(&buf, struc, &var_hash);
901 );
902
903 smart_str_0(&buf);
904 PHP_VAR_SERIALIZE_DESTROY(var_hash);
905
906 return buf.s;
907 }
908 /* }}} */
909
PS_SERIALIZER_DECODE_FUNC(php_binary)910 PS_SERIALIZER_DECODE_FUNC(php_binary) /* {{{ */
911 {
912 const char *p;
913 const char *endptr = val + vallen;
914 int namelen;
915 zend_string *name;
916 php_unserialize_data_t var_hash;
917 zval *current, rv;
918
919 PHP_VAR_UNSERIALIZE_INIT(var_hash);
920
921 for (p = val; p < endptr; ) {
922 namelen = ((unsigned char)(*p)) & (~PS_BIN_UNDEF);
923
924 if (namelen < 0 || namelen > PS_BIN_MAX || (p + namelen) >= endptr) {
925 PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
926 return FAILURE;
927 }
928
929 name = zend_string_init(p + 1, namelen, 0);
930 p += namelen + 1;
931 current = var_tmp_var(&var_hash);
932
933 if (php_var_unserialize(current, (const unsigned char **) &p, (const unsigned char *) endptr, &var_hash)) {
934 ZVAL_PTR(&rv, current);
935 php_set_session_var(name, &rv, &var_hash);
936 } else {
937 zend_string_release_ex(name, 0);
938 php_session_normalize_vars();
939 PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
940 return FAILURE;
941 }
942 zend_string_release_ex(name, 0);
943 }
944
945 php_session_normalize_vars();
946 PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
947
948 return SUCCESS;
949 }
950 /* }}} */
951
952 #define PS_DELIMITER '|'
953
PS_SERIALIZER_ENCODE_FUNC(php)954 PS_SERIALIZER_ENCODE_FUNC(php) /* {{{ */
955 {
956 smart_str buf = {0};
957 php_serialize_data_t var_hash;
958 PS_ENCODE_VARS;
959
960 PHP_VAR_SERIALIZE_INIT(var_hash);
961
962 PS_ENCODE_LOOP(
963 smart_str_appendl(&buf, ZSTR_VAL(key), ZSTR_LEN(key));
964 if (memchr(ZSTR_VAL(key), PS_DELIMITER, ZSTR_LEN(key))) {
965 PHP_VAR_SERIALIZE_DESTROY(var_hash);
966 smart_str_free(&buf);
967 return NULL;
968 }
969 smart_str_appendc(&buf, PS_DELIMITER);
970 php_var_serialize(&buf, struc, &var_hash);
971 );
972
973 smart_str_0(&buf);
974
975 PHP_VAR_SERIALIZE_DESTROY(var_hash);
976 return buf.s;
977 }
978 /* }}} */
979
PS_SERIALIZER_DECODE_FUNC(php)980 PS_SERIALIZER_DECODE_FUNC(php) /* {{{ */
981 {
982 const char *p, *q;
983 const char *endptr = val + vallen;
984 ptrdiff_t namelen;
985 zend_string *name;
986 int retval = SUCCESS;
987 php_unserialize_data_t var_hash;
988 zval *current, rv;
989
990 PHP_VAR_UNSERIALIZE_INIT(var_hash);
991
992 p = val;
993
994 while (p < endptr) {
995 q = p;
996 while (*q != PS_DELIMITER) {
997 if (++q >= endptr) goto break_outer_loop;
998 }
999
1000 namelen = q - p;
1001 name = zend_string_init(p, namelen, 0);
1002 q++;
1003
1004 current = var_tmp_var(&var_hash);
1005 if (php_var_unserialize(current, (const unsigned char **)&q, (const unsigned char *)endptr, &var_hash)) {
1006 ZVAL_PTR(&rv, current);
1007 php_set_session_var(name, &rv, &var_hash);
1008 } else {
1009 zend_string_release_ex(name, 0);
1010 retval = FAILURE;
1011 goto break_outer_loop;
1012 }
1013 zend_string_release_ex(name, 0);
1014 p = q;
1015 }
1016
1017 break_outer_loop:
1018 php_session_normalize_vars();
1019
1020 PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
1021
1022 return retval;
1023 }
1024 /* }}} */
1025
1026 #define MAX_SERIALIZERS 32
1027 #define PREDEFINED_SERIALIZERS 3
1028
1029 static ps_serializer ps_serializers[MAX_SERIALIZERS + 1] = {
1030 PS_SERIALIZER_ENTRY(php_serialize),
1031 PS_SERIALIZER_ENTRY(php),
1032 PS_SERIALIZER_ENTRY(php_binary)
1033 };
1034
php_session_register_serializer(const char * name,zend_string * (* encode)(PS_SERIALIZER_ENCODE_ARGS),int (* decode)(PS_SERIALIZER_DECODE_ARGS))1035 PHPAPI int php_session_register_serializer(const char *name, zend_string *(*encode)(PS_SERIALIZER_ENCODE_ARGS), int (*decode)(PS_SERIALIZER_DECODE_ARGS)) /* {{{ */
1036 {
1037 int ret = FAILURE;
1038 int i;
1039
1040 for (i = 0; i < MAX_SERIALIZERS; i++) {
1041 if (ps_serializers[i].name == NULL) {
1042 ps_serializers[i].name = name;
1043 ps_serializers[i].encode = encode;
1044 ps_serializers[i].decode = decode;
1045 ps_serializers[i + 1].name = NULL;
1046 ret = SUCCESS;
1047 break;
1048 }
1049 }
1050 return ret;
1051 }
1052 /* }}} */
1053
1054 /* *******************
1055 * Storage Modules *
1056 ******************* */
1057
1058 #define MAX_MODULES 32
1059 #define PREDEFINED_MODULES 2
1060
1061 static const ps_module *ps_modules[MAX_MODULES + 1] = {
1062 ps_files_ptr,
1063 ps_user_ptr
1064 };
1065
php_session_register_module(const ps_module * ptr)1066 PHPAPI int php_session_register_module(const ps_module *ptr) /* {{{ */
1067 {
1068 int ret = FAILURE;
1069 int i;
1070
1071 for (i = 0; i < MAX_MODULES; i++) {
1072 if (!ps_modules[i]) {
1073 ps_modules[i] = ptr;
1074 ret = SUCCESS;
1075 break;
1076 }
1077 }
1078 return ret;
1079 }
1080 /* }}} */
1081
1082 /* Dummy PS module function */
php_session_validate_sid(PS_VALIDATE_SID_ARGS)1083 PHPAPI int php_session_validate_sid(PS_VALIDATE_SID_ARGS) {
1084 return SUCCESS;
1085 }
1086
1087 /* Dummy PS module function */
php_session_update_timestamp(PS_UPDATE_TIMESTAMP_ARGS)1088 PHPAPI int php_session_update_timestamp(PS_UPDATE_TIMESTAMP_ARGS) {
1089 return SUCCESS;
1090 }
1091
1092
1093 /* ******************
1094 * Cache Limiters *
1095 ****************** */
1096
1097 typedef struct {
1098 char *name;
1099 void (*func)(void);
1100 } php_session_cache_limiter_t;
1101
1102 #define CACHE_LIMITER(name) _php_cache_limiter_##name
1103 #define CACHE_LIMITER_FUNC(name) static void CACHE_LIMITER(name)(void)
1104 #define CACHE_LIMITER_ENTRY(name) { #name, CACHE_LIMITER(name) },
1105 #define ADD_HEADER(a) sapi_add_header(a, strlen(a), 1);
1106 #define MAX_STR 512
1107
1108 static char *month_names[] = {
1109 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
1110 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
1111 };
1112
1113 static char *week_days[] = {
1114 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"
1115 };
1116
strcpy_gmt(char * ubuf,time_t * when)1117 static inline void strcpy_gmt(char *ubuf, time_t *when) /* {{{ */
1118 {
1119 char buf[MAX_STR];
1120 struct tm tm, *res;
1121 int n;
1122
1123 res = php_gmtime_r(when, &tm);
1124
1125 if (!res) {
1126 ubuf[0] = '\0';
1127 return;
1128 }
1129
1130 n = slprintf(buf, sizeof(buf), "%s, %02d %s %d %02d:%02d:%02d GMT", /* SAFE */
1131 week_days[tm.tm_wday], tm.tm_mday,
1132 month_names[tm.tm_mon], tm.tm_year + 1900,
1133 tm.tm_hour, tm.tm_min,
1134 tm.tm_sec);
1135 memcpy(ubuf, buf, n);
1136 ubuf[n] = '\0';
1137 }
1138 /* }}} */
1139
last_modified(void)1140 static inline void last_modified(void) /* {{{ */
1141 {
1142 const char *path;
1143 zend_stat_t sb;
1144 char buf[MAX_STR + 1];
1145
1146 path = SG(request_info).path_translated;
1147 if (path) {
1148 if (VCWD_STAT(path, &sb) == -1) {
1149 return;
1150 }
1151
1152 #define LAST_MODIFIED "Last-Modified: "
1153 memcpy(buf, LAST_MODIFIED, sizeof(LAST_MODIFIED) - 1);
1154 strcpy_gmt(buf + sizeof(LAST_MODIFIED) - 1, &sb.st_mtime);
1155 ADD_HEADER(buf);
1156 }
1157 }
1158 /* }}} */
1159
1160 #define EXPIRES "Expires: "
CACHE_LIMITER_FUNC(public)1161 CACHE_LIMITER_FUNC(public) /* {{{ */
1162 {
1163 char buf[MAX_STR + 1];
1164 struct timeval tv;
1165 time_t now;
1166
1167 gettimeofday(&tv, NULL);
1168 now = tv.tv_sec + PS(cache_expire) * 60;
1169 memcpy(buf, EXPIRES, sizeof(EXPIRES) - 1);
1170 strcpy_gmt(buf + sizeof(EXPIRES) - 1, &now);
1171 ADD_HEADER(buf);
1172
1173 snprintf(buf, sizeof(buf) , "Cache-Control: public, max-age=" ZEND_LONG_FMT, PS(cache_expire) * 60); /* SAFE */
1174 ADD_HEADER(buf);
1175
1176 last_modified();
1177 }
1178 /* }}} */
1179
CACHE_LIMITER_FUNC(private_no_expire)1180 CACHE_LIMITER_FUNC(private_no_expire) /* {{{ */
1181 {
1182 char buf[MAX_STR + 1];
1183
1184 snprintf(buf, sizeof(buf), "Cache-Control: private, max-age=" ZEND_LONG_FMT, PS(cache_expire) * 60); /* SAFE */
1185 ADD_HEADER(buf);
1186
1187 last_modified();
1188 }
1189 /* }}} */
1190
CACHE_LIMITER_FUNC(private)1191 CACHE_LIMITER_FUNC(private) /* {{{ */
1192 {
1193 ADD_HEADER("Expires: Thu, 19 Nov 1981 08:52:00 GMT");
1194 CACHE_LIMITER(private_no_expire)();
1195 }
1196 /* }}} */
1197
CACHE_LIMITER_FUNC(nocache)1198 CACHE_LIMITER_FUNC(nocache) /* {{{ */
1199 {
1200 ADD_HEADER("Expires: Thu, 19 Nov 1981 08:52:00 GMT");
1201
1202 /* For HTTP/1.1 conforming clients */
1203 ADD_HEADER("Cache-Control: no-store, no-cache, must-revalidate");
1204
1205 /* For HTTP/1.0 conforming clients */
1206 ADD_HEADER("Pragma: no-cache");
1207 }
1208 /* }}} */
1209
1210 static const php_session_cache_limiter_t php_session_cache_limiters[] = {
1211 CACHE_LIMITER_ENTRY(public)
1212 CACHE_LIMITER_ENTRY(private)
1213 CACHE_LIMITER_ENTRY(private_no_expire)
1214 CACHE_LIMITER_ENTRY(nocache)
1215 {0}
1216 };
1217
php_session_cache_limiter(void)1218 static int php_session_cache_limiter(void) /* {{{ */
1219 {
1220 const php_session_cache_limiter_t *lim;
1221
1222 if (PS(cache_limiter)[0] == '\0') return 0;
1223 if (PS(session_status) != php_session_active) return -1;
1224
1225 if (SG(headers_sent)) {
1226 const char *output_start_filename = php_output_get_start_filename();
1227 int output_start_lineno = php_output_get_start_lineno();
1228
1229 php_session_abort();
1230 if (output_start_filename) {
1231 php_error_docref(NULL, E_WARNING, "Cannot send session cache limiter - headers already sent (output started at %s:%d)", output_start_filename, output_start_lineno);
1232 } else {
1233 php_error_docref(NULL, E_WARNING, "Cannot send session cache limiter - headers already sent");
1234 }
1235 return -2;
1236 }
1237
1238 for (lim = php_session_cache_limiters; lim->name; lim++) {
1239 if (!strcasecmp(lim->name, PS(cache_limiter))) {
1240 lim->func();
1241 return 0;
1242 }
1243 }
1244
1245 return -1;
1246 }
1247 /* }}} */
1248
1249 /* *********************
1250 * Cookie Management *
1251 ********************* */
1252
1253 /*
1254 * Remove already sent session ID cookie.
1255 * It must be directly removed from SG(sapi_header) because sapi_add_header_ex()
1256 * removes all of matching cookie. i.e. It deletes all of Set-Cookie headers.
1257 */
php_session_remove_cookie(void)1258 static void php_session_remove_cookie(void) {
1259 sapi_header_struct *header;
1260 zend_llist *l = &SG(sapi_headers).headers;
1261 zend_llist_element *next;
1262 zend_llist_element *current;
1263 char *session_cookie;
1264 size_t session_cookie_len;
1265 size_t len = sizeof("Set-Cookie")-1;
1266
1267 ZEND_ASSERT(strpbrk(PS(session_name), "=,; \t\r\n\013\014") == NULL);
1268 spprintf(&session_cookie, 0, "Set-Cookie: %s=", PS(session_name));
1269
1270 session_cookie_len = strlen(session_cookie);
1271 current = l->head;
1272 while (current) {
1273 header = (sapi_header_struct *)(current->data);
1274 next = current->next;
1275 if (header->header_len > len && header->header[len] == ':'
1276 && !strncmp(header->header, session_cookie, session_cookie_len)) {
1277 if (current->prev) {
1278 current->prev->next = next;
1279 } else {
1280 l->head = next;
1281 }
1282 if (next) {
1283 next->prev = current->prev;
1284 } else {
1285 l->tail = current->prev;
1286 }
1287 sapi_free_header(header);
1288 efree(current);
1289 --l->count;
1290 }
1291 current = next;
1292 }
1293 efree(session_cookie);
1294 }
1295
php_session_send_cookie(void)1296 static int php_session_send_cookie(void) /* {{{ */
1297 {
1298 smart_str ncookie = {0};
1299 zend_string *date_fmt = NULL;
1300 zend_string *e_id;
1301
1302 if (SG(headers_sent)) {
1303 const char *output_start_filename = php_output_get_start_filename();
1304 int output_start_lineno = php_output_get_start_lineno();
1305
1306 if (output_start_filename) {
1307 php_error_docref(NULL, E_WARNING, "Cannot send session cookie - headers already sent by (output started at %s:%d)", output_start_filename, output_start_lineno);
1308 } else {
1309 php_error_docref(NULL, E_WARNING, "Cannot send session cookie - headers already sent");
1310 }
1311 return FAILURE;
1312 }
1313
1314 /* Prevent broken Set-Cookie header, because the session_name might be user supplied */
1315 if (strpbrk(PS(session_name), "=,; \t\r\n\013\014") != NULL) { /* man isspace for \013 and \014 */
1316 php_error_docref(NULL, E_WARNING, "session.name cannot contain any of the following '=,; \\t\\r\\n\\013\\014'");
1317 return FAILURE;
1318 }
1319
1320 /* URL encode id because it might be user supplied */
1321 e_id = php_url_encode(ZSTR_VAL(PS(id)), ZSTR_LEN(PS(id)));
1322
1323 smart_str_appendl(&ncookie, "Set-Cookie: ", sizeof("Set-Cookie: ")-1);
1324 smart_str_appendl(&ncookie, PS(session_name), strlen(PS(session_name)));
1325 smart_str_appendc(&ncookie, '=');
1326 smart_str_appendl(&ncookie, ZSTR_VAL(e_id), ZSTR_LEN(e_id));
1327
1328 zend_string_release_ex(e_id, 0);
1329
1330 if (PS(cookie_lifetime) > 0) {
1331 struct timeval tv;
1332 time_t t;
1333
1334 gettimeofday(&tv, NULL);
1335 t = tv.tv_sec + PS(cookie_lifetime);
1336
1337 if (t > 0) {
1338 date_fmt = php_format_date("D, d-M-Y H:i:s T", sizeof("D, d-M-Y H:i:s T")-1, t, 0);
1339 smart_str_appends(&ncookie, COOKIE_EXPIRES);
1340 smart_str_appendl(&ncookie, ZSTR_VAL(date_fmt), ZSTR_LEN(date_fmt));
1341 zend_string_release_ex(date_fmt, 0);
1342
1343 smart_str_appends(&ncookie, COOKIE_MAX_AGE);
1344 smart_str_append_long(&ncookie, PS(cookie_lifetime));
1345 }
1346 }
1347
1348 if (PS(cookie_path)[0]) {
1349 smart_str_appends(&ncookie, COOKIE_PATH);
1350 smart_str_appends(&ncookie, PS(cookie_path));
1351 }
1352
1353 if (PS(cookie_domain)[0]) {
1354 smart_str_appends(&ncookie, COOKIE_DOMAIN);
1355 smart_str_appends(&ncookie, PS(cookie_domain));
1356 }
1357
1358 if (PS(cookie_secure)) {
1359 smart_str_appends(&ncookie, COOKIE_SECURE);
1360 }
1361
1362 if (PS(cookie_httponly)) {
1363 smart_str_appends(&ncookie, COOKIE_HTTPONLY);
1364 }
1365
1366 if (PS(cookie_samesite)[0]) {
1367 smart_str_appends(&ncookie, COOKIE_SAMESITE);
1368 smart_str_appends(&ncookie, PS(cookie_samesite));
1369 }
1370
1371 smart_str_0(&ncookie);
1372
1373 php_session_remove_cookie(); /* remove already sent session ID cookie */
1374 /* 'replace' must be 0 here, else a previous Set-Cookie
1375 header, probably sent with setcookie() will be replaced! */
1376 sapi_add_header_ex(estrndup(ZSTR_VAL(ncookie.s), ZSTR_LEN(ncookie.s)), ZSTR_LEN(ncookie.s), 0, 0);
1377 smart_str_free(&ncookie);
1378
1379 return SUCCESS;
1380 }
1381 /* }}} */
1382
_php_find_ps_module(char * name)1383 PHPAPI const ps_module *_php_find_ps_module(char *name) /* {{{ */
1384 {
1385 const ps_module *ret = NULL;
1386 const ps_module **mod;
1387 int i;
1388
1389 for (i = 0, mod = ps_modules; i < MAX_MODULES; i++, mod++) {
1390 if (*mod && !strcasecmp(name, (*mod)->s_name)) {
1391 ret = *mod;
1392 break;
1393 }
1394 }
1395 return ret;
1396 }
1397 /* }}} */
1398
_php_find_ps_serializer(char * name)1399 PHPAPI const ps_serializer *_php_find_ps_serializer(char *name) /* {{{ */
1400 {
1401 const ps_serializer *ret = NULL;
1402 const ps_serializer *mod;
1403
1404 for (mod = ps_serializers; mod->name; mod++) {
1405 if (!strcasecmp(name, mod->name)) {
1406 ret = mod;
1407 break;
1408 }
1409 }
1410 return ret;
1411 }
1412 /* }}} */
1413
ppid2sid(zval * ppid)1414 static void ppid2sid(zval *ppid) {
1415 ZVAL_DEREF(ppid);
1416 if (Z_TYPE_P(ppid) == IS_STRING) {
1417 PS(id) = zend_string_init(Z_STRVAL_P(ppid), Z_STRLEN_P(ppid), 0);
1418 PS(send_cookie) = 0;
1419 } else {
1420 PS(id) = NULL;
1421 PS(send_cookie) = 1;
1422 }
1423 }
1424
1425
php_session_reset_id(void)1426 PHPAPI int php_session_reset_id(void) /* {{{ */
1427 {
1428 int module_number = PS(module_number);
1429 zval *sid, *data, *ppid;
1430 zend_bool apply_trans_sid;
1431
1432 if (!PS(id)) {
1433 php_error_docref(NULL, E_WARNING, "Cannot set session ID - session ID is not initialized");
1434 return FAILURE;
1435 }
1436
1437 if (PS(use_cookies) && PS(send_cookie)) {
1438 php_session_send_cookie();
1439 PS(send_cookie) = 0;
1440 }
1441
1442 /* If the SID constant exists, destroy it. */
1443 /* We must not delete any items in EG(zend_constants) */
1444 /* zend_hash_str_del(EG(zend_constants), "sid", sizeof("sid") - 1); */
1445 sid = zend_get_constant_str("SID", sizeof("SID") - 1);
1446
1447 if (PS(define_sid)) {
1448 smart_str var = {0};
1449
1450 smart_str_appends(&var, PS(session_name));
1451 smart_str_appendc(&var, '=');
1452 smart_str_appends(&var, ZSTR_VAL(PS(id)));
1453 smart_str_0(&var);
1454 if (sid) {
1455 zval_ptr_dtor_str(sid);
1456 ZVAL_NEW_STR(sid, var.s);
1457 } else {
1458 REGISTER_STRINGL_CONSTANT("SID", ZSTR_VAL(var.s), ZSTR_LEN(var.s), 0);
1459 smart_str_free(&var);
1460 }
1461 } else {
1462 if (sid) {
1463 zval_ptr_dtor_str(sid);
1464 ZVAL_EMPTY_STRING(sid);
1465 } else {
1466 REGISTER_STRINGL_CONSTANT("SID", "", 0, 0);
1467 }
1468 }
1469
1470 /* Apply trans sid if sid cookie is not set */
1471 apply_trans_sid = 0;
1472 if (APPLY_TRANS_SID) {
1473 apply_trans_sid = 1;
1474 if (PS(use_cookies) &&
1475 (data = zend_hash_str_find(&EG(symbol_table), "_COOKIE", sizeof("_COOKIE") - 1))) {
1476 ZVAL_DEREF(data);
1477 if (Z_TYPE_P(data) == IS_ARRAY &&
1478 (ppid = zend_hash_str_find(Z_ARRVAL_P(data), PS(session_name), strlen(PS(session_name))))) {
1479 ZVAL_DEREF(ppid);
1480 apply_trans_sid = 0;
1481 }
1482 }
1483 }
1484 if (apply_trans_sid) {
1485 zend_string *sname;
1486 sname = zend_string_init(PS(session_name), strlen(PS(session_name)), 0);
1487 php_url_scanner_reset_session_var(sname, 1); /* This may fail when session name has changed */
1488 zend_string_release_ex(sname, 0);
1489 php_url_scanner_add_session_var(PS(session_name), strlen(PS(session_name)), ZSTR_VAL(PS(id)), ZSTR_LEN(PS(id)), 1);
1490 }
1491 return SUCCESS;
1492 }
1493 /* }}} */
1494
1495
php_session_start(void)1496 PHPAPI int php_session_start(void) /* {{{ */
1497 {
1498 zval *ppid;
1499 zval *data;
1500 char *p, *value;
1501 size_t lensess;
1502
1503 switch (PS(session_status)) {
1504 case php_session_active:
1505 php_error(E_NOTICE, "A session had already been started - ignoring session_start()");
1506 return FAILURE;
1507 break;
1508
1509 case php_session_disabled:
1510 value = zend_ini_string("session.save_handler", sizeof("session.save_handler") - 1, 0);
1511 if (!PS(mod) && value) {
1512 PS(mod) = _php_find_ps_module(value);
1513 if (!PS(mod)) {
1514 php_error_docref(NULL, E_WARNING, "Cannot find save handler '%s' - session startup failed", value);
1515 return FAILURE;
1516 }
1517 }
1518 value = zend_ini_string("session.serialize_handler", sizeof("session.serialize_handler") - 1, 0);
1519 if (!PS(serializer) && value) {
1520 PS(serializer) = _php_find_ps_serializer(value);
1521 if (!PS(serializer)) {
1522 php_error_docref(NULL, E_WARNING, "Cannot find serialization handler '%s' - session startup failed", value);
1523 return FAILURE;
1524 }
1525 }
1526 PS(session_status) = php_session_none;
1527 /* Fall through */
1528
1529 case php_session_none:
1530 default:
1531 /* Setup internal flags */
1532 PS(define_sid) = !PS(use_only_cookies); /* SID constant is defined when non-cookie ID is used */
1533 PS(send_cookie) = PS(use_cookies) || PS(use_only_cookies);
1534 }
1535
1536 lensess = strlen(PS(session_name));
1537
1538 /*
1539 * Cookies are preferred, because initially cookie and get
1540 * variables will be available.
1541 * URL/POST session ID may be used when use_only_cookies=Off.
1542 * session.use_strice_mode=On prevents session adoption.
1543 * Session based file upload progress uses non-cookie ID.
1544 */
1545
1546 if (!PS(id)) {
1547 if (PS(use_cookies) && (data = zend_hash_str_find(&EG(symbol_table), "_COOKIE", sizeof("_COOKIE") - 1))) {
1548 ZVAL_DEREF(data);
1549 if (Z_TYPE_P(data) == IS_ARRAY && (ppid = zend_hash_str_find(Z_ARRVAL_P(data), PS(session_name), lensess))) {
1550 ppid2sid(ppid);
1551 PS(send_cookie) = 0;
1552 PS(define_sid) = 0;
1553 }
1554 }
1555 /* Initialize session ID from non cookie values */
1556 if (!PS(use_only_cookies)) {
1557 if (!PS(id) && (data = zend_hash_str_find(&EG(symbol_table), "_GET", sizeof("_GET") - 1))) {
1558 ZVAL_DEREF(data);
1559 if (Z_TYPE_P(data) == IS_ARRAY && (ppid = zend_hash_str_find(Z_ARRVAL_P(data), PS(session_name), lensess))) {
1560 ppid2sid(ppid);
1561 }
1562 }
1563 if (!PS(id) && (data = zend_hash_str_find(&EG(symbol_table), "_POST", sizeof("_POST") - 1))) {
1564 ZVAL_DEREF(data);
1565 if (Z_TYPE_P(data) == IS_ARRAY && (ppid = zend_hash_str_find(Z_ARRVAL_P(data), PS(session_name), lensess))) {
1566 ppid2sid(ppid);
1567 }
1568 }
1569 /* Check the REQUEST_URI symbol for a string of the form
1570 * '<session-name>=<session-id>' to allow URLs of the form
1571 * http://yoursite/<session-name>=<session-id>/script.php */
1572 if (!PS(id) && zend_is_auto_global_str("_SERVER", sizeof("_SERVER") - 1) == SUCCESS &&
1573 (data = zend_hash_str_find(Z_ARRVAL(PG(http_globals)[TRACK_VARS_SERVER]), "REQUEST_URI", sizeof("REQUEST_URI") - 1)) &&
1574 Z_TYPE_P(data) == IS_STRING &&
1575 (p = strstr(Z_STRVAL_P(data), PS(session_name))) &&
1576 p[lensess] == '='
1577 ) {
1578 char *q;
1579 p += lensess + 1;
1580 if ((q = strpbrk(p, "/?\\"))) {
1581 PS(id) = zend_string_init(p, q - p, 0);
1582 }
1583 }
1584 /* Check whether the current request was referred to by
1585 * an external site which invalidates the previously found id. */
1586 if (PS(id) && PS(extern_referer_chk)[0] != '\0' &&
1587 !Z_ISUNDEF(PG(http_globals)[TRACK_VARS_SERVER]) &&
1588 (data = zend_hash_str_find(Z_ARRVAL(PG(http_globals)[TRACK_VARS_SERVER]), "HTTP_REFERER", sizeof("HTTP_REFERER") - 1)) &&
1589 Z_TYPE_P(data) == IS_STRING &&
1590 Z_STRLEN_P(data) != 0 &&
1591 strstr(Z_STRVAL_P(data), PS(extern_referer_chk)) == NULL
1592 ) {
1593 zend_string_release_ex(PS(id), 0);
1594 PS(id) = NULL;
1595 }
1596 }
1597 }
1598
1599 /* Finally check session id for dangerous characters
1600 * Security note: session id may be embedded in HTML pages.*/
1601 if (PS(id) && strpbrk(ZSTR_VAL(PS(id)), "\r\n\t <>'\"\\")) {
1602 zend_string_release_ex(PS(id), 0);
1603 PS(id) = NULL;
1604 }
1605
1606 if (php_session_initialize() == FAILURE
1607 || php_session_cache_limiter() == -2) {
1608 PS(session_status) = php_session_none;
1609 if (PS(id)) {
1610 zend_string_release_ex(PS(id), 0);
1611 PS(id) = NULL;
1612 }
1613 return FAILURE;
1614 }
1615 return SUCCESS;
1616 }
1617 /* }}} */
1618
php_session_flush(int write)1619 PHPAPI int php_session_flush(int write) /* {{{ */
1620 {
1621 if (PS(session_status) == php_session_active) {
1622 php_session_save_current_state(write);
1623 PS(session_status) = php_session_none;
1624 return SUCCESS;
1625 }
1626 return FAILURE;
1627 }
1628 /* }}} */
1629
php_session_abort(void)1630 static int php_session_abort(void) /* {{{ */
1631 {
1632 if (PS(session_status) == php_session_active) {
1633 if (PS(mod_data) || PS(mod_user_implemented)) {
1634 PS(mod)->s_close(&PS(mod_data));
1635 }
1636 PS(session_status) = php_session_none;
1637 return SUCCESS;
1638 }
1639 return FAILURE;
1640 }
1641 /* }}} */
1642
php_session_reset(void)1643 static int php_session_reset(void) /* {{{ */
1644 {
1645 if (PS(session_status) == php_session_active
1646 && php_session_initialize() == SUCCESS) {
1647 return SUCCESS;
1648 }
1649 return FAILURE;
1650 }
1651 /* }}} */
1652
1653
1654 /* This API is not used by any PHP modules including session currently.
1655 session_adapt_url() may be used to set Session ID to target url without
1656 starting "URL-Rewriter" output handler. */
session_adapt_url(const char * url,size_t urllen,char ** new,size_t * newlen)1657 PHPAPI void session_adapt_url(const char *url, size_t urllen, char **new, size_t *newlen) /* {{{ */
1658 {
1659 if (APPLY_TRANS_SID && (PS(session_status) == php_session_active)) {
1660 *new = php_url_scanner_adapt_single_url(url, urllen, PS(session_name), ZSTR_VAL(PS(id)), newlen, 1);
1661 }
1662 }
1663 /* }}} */
1664
1665 /* ********************************
1666 * Userspace exported functions *
1667 ******************************** */
1668
1669 /* {{{ proto bool session_set_cookie_params(int lifetime [, string path [, string domain [, bool secure[, bool httponly]]]])
1670 session_set_cookie_params(array options)
1671 Set session cookie parameters */
PHP_FUNCTION(session_set_cookie_params)1672 static PHP_FUNCTION(session_set_cookie_params)
1673 {
1674 zval *lifetime_or_options = NULL;
1675 zend_string *lifetime = NULL, *path = NULL, *domain = NULL, *samesite = NULL;
1676 zend_bool secure = 0, secure_null = 1;
1677 zend_bool httponly = 0, httponly_null = 1;
1678 zend_string *ini_name;
1679 int result;
1680 int found = 0;
1681
1682 if (!PS(use_cookies)) {
1683 return;
1684 }
1685
1686 ZEND_PARSE_PARAMETERS_START(1, 5)
1687 Z_PARAM_ZVAL(lifetime_or_options)
1688 Z_PARAM_OPTIONAL
1689 Z_PARAM_STR(path)
1690 Z_PARAM_STR(domain)
1691 Z_PARAM_BOOL_EX(secure, secure_null, 1, 0)
1692 Z_PARAM_BOOL_EX(httponly, httponly_null, 1, 0)
1693 ZEND_PARSE_PARAMETERS_END();
1694
1695 if (PS(session_status) == php_session_active) {
1696 php_error_docref(NULL, E_WARNING, "Cannot change session cookie parameters when session is active");
1697 RETURN_FALSE;
1698 }
1699
1700 if (SG(headers_sent)) {
1701 php_error_docref(NULL, E_WARNING, "Cannot change session cookie parameters when headers already sent");
1702 RETURN_FALSE;
1703 }
1704
1705 if (Z_TYPE_P(lifetime_or_options) == IS_ARRAY) {
1706 zend_string *key;
1707 zval *value;
1708
1709 if (path) {
1710 path = NULL;
1711 domain = NULL;
1712 secure_null = 1;
1713 httponly_null = 1;
1714 php_error_docref(NULL, E_WARNING, "Cannot pass arguments after the options array");
1715 RETURN_FALSE;
1716 }
1717
1718 ZEND_HASH_FOREACH_STR_KEY_VAL(Z_ARRVAL_P(lifetime_or_options), key, value) {
1719 if (key) {
1720 ZVAL_DEREF(value);
1721 if(!strcasecmp("lifetime", ZSTR_VAL(key))) {
1722 lifetime = zval_get_string(value);
1723 found++;
1724 } else if(!strcasecmp("path", ZSTR_VAL(key))) {
1725 path = zval_get_string(value);
1726 found++;
1727 } else if(!strcasecmp("domain", ZSTR_VAL(key))) {
1728 domain = zval_get_string(value);
1729 found++;
1730 } else if(!strcasecmp("secure", ZSTR_VAL(key))) {
1731 secure = zval_is_true(value);
1732 secure_null = 0;
1733 found++;
1734 } else if(!strcasecmp("httponly", ZSTR_VAL(key))) {
1735 httponly = zval_is_true(value);
1736 httponly_null = 0;
1737 found++;
1738 } else if(!strcasecmp("samesite", ZSTR_VAL(key))) {
1739 samesite = zval_get_string(value);
1740 found++;
1741 } else {
1742 php_error_docref(NULL, E_WARNING, "Unrecognized key '%s' found in the options array", ZSTR_VAL(key));
1743 }
1744 } else {
1745 php_error_docref(NULL, E_WARNING, "Numeric key found in the options array");
1746 }
1747 } ZEND_HASH_FOREACH_END();
1748
1749 if (found == 0) {
1750 php_error_docref(NULL, E_WARNING, "No valid keys were found in the options array");
1751 RETURN_FALSE;
1752 }
1753 } else {
1754 lifetime = zval_get_string(lifetime_or_options);
1755 }
1756
1757 /* Exception during string conversion */
1758 if (EG(exception)) {
1759 goto cleanup;
1760 }
1761
1762 if (lifetime) {
1763 ini_name = zend_string_init("session.cookie_lifetime", sizeof("session.cookie_lifetime") - 1, 0);
1764 result = zend_alter_ini_entry(ini_name, lifetime, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1765 zend_string_release_ex(ini_name, 0);
1766 if (result == FAILURE) {
1767 RETVAL_FALSE;
1768 goto cleanup;
1769 }
1770 }
1771 if (path) {
1772 ini_name = zend_string_init("session.cookie_path", sizeof("session.cookie_path") - 1, 0);
1773 result = zend_alter_ini_entry(ini_name, path, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1774 zend_string_release_ex(ini_name, 0);
1775 if (result == FAILURE) {
1776 RETVAL_FALSE;
1777 goto cleanup;
1778 }
1779 }
1780 if (domain) {
1781 ini_name = zend_string_init("session.cookie_domain", sizeof("session.cookie_domain") - 1, 0);
1782 result = zend_alter_ini_entry(ini_name, domain, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1783 zend_string_release_ex(ini_name, 0);
1784 if (result == FAILURE) {
1785 RETVAL_FALSE;
1786 goto cleanup;
1787 }
1788 }
1789 if (!secure_null) {
1790 ini_name = zend_string_init("session.cookie_secure", sizeof("session.cookie_secure") - 1, 0);
1791 result = zend_alter_ini_entry_chars(ini_name, secure ? "1" : "0", 1, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1792 zend_string_release_ex(ini_name, 0);
1793 if (result == FAILURE) {
1794 RETVAL_FALSE;
1795 goto cleanup;
1796 }
1797 }
1798 if (!httponly_null) {
1799 ini_name = zend_string_init("session.cookie_httponly", sizeof("session.cookie_httponly") - 1, 0);
1800 result = zend_alter_ini_entry_chars(ini_name, httponly ? "1" : "0", 1, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1801 zend_string_release_ex(ini_name, 0);
1802 if (result == FAILURE) {
1803 RETVAL_FALSE;
1804 goto cleanup;
1805 }
1806 }
1807 if (samesite) {
1808 ini_name = zend_string_init("session.cookie_samesite", sizeof("session.cookie_samesite") - 1, 0);
1809 result = zend_alter_ini_entry(ini_name, samesite, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1810 zend_string_release_ex(ini_name, 0);
1811 if (result == FAILURE) {
1812 RETVAL_FALSE;
1813 goto cleanup;
1814 }
1815 }
1816
1817 RETVAL_TRUE;
1818
1819 cleanup:
1820 if (lifetime) zend_string_release(lifetime);
1821 if (found > 0) {
1822 if (path) zend_string_release(path);
1823 if (domain) zend_string_release(domain);
1824 if (samesite) zend_string_release(samesite);
1825 }
1826 }
1827 /* }}} */
1828
1829 /* {{{ proto array session_get_cookie_params(void)
1830 Return the session cookie parameters */
PHP_FUNCTION(session_get_cookie_params)1831 static PHP_FUNCTION(session_get_cookie_params)
1832 {
1833 if (zend_parse_parameters_none() == FAILURE) {
1834 return;
1835 }
1836
1837 array_init(return_value);
1838
1839 add_assoc_long(return_value, "lifetime", PS(cookie_lifetime));
1840 add_assoc_string(return_value, "path", PS(cookie_path));
1841 add_assoc_string(return_value, "domain", PS(cookie_domain));
1842 add_assoc_bool(return_value, "secure", PS(cookie_secure));
1843 add_assoc_bool(return_value, "httponly", PS(cookie_httponly));
1844 add_assoc_string(return_value, "samesite", PS(cookie_samesite));
1845 }
1846 /* }}} */
1847
1848 /* {{{ proto string session_name([string newname])
1849 Return the current session name. If newname is given, the session name is replaced with newname */
PHP_FUNCTION(session_name)1850 static PHP_FUNCTION(session_name)
1851 {
1852 zend_string *name = NULL;
1853 zend_string *ini_name;
1854
1855 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|S", &name) == FAILURE) {
1856 return;
1857 }
1858
1859 if (name && PS(session_status) == php_session_active) {
1860 php_error_docref(NULL, E_WARNING, "Cannot change session name when session is active");
1861 RETURN_FALSE;
1862 }
1863
1864 if (name && SG(headers_sent)) {
1865 php_error_docref(NULL, E_WARNING, "Cannot change session name when headers already sent");
1866 RETURN_FALSE;
1867 }
1868
1869 RETVAL_STRING(PS(session_name));
1870
1871 if (name) {
1872 ini_name = zend_string_init("session.name", sizeof("session.name") - 1, 0);
1873 zend_alter_ini_entry(ini_name, name, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1874 zend_string_release_ex(ini_name, 0);
1875 }
1876 }
1877 /* }}} */
1878
1879 /* {{{ proto string session_module_name([string newname])
1880 Return the current module name used for accessing session data. If newname is given, the module name is replaced with newname */
PHP_FUNCTION(session_module_name)1881 static PHP_FUNCTION(session_module_name)
1882 {
1883 zend_string *name = NULL;
1884 zend_string *ini_name;
1885
1886 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|S", &name) == FAILURE) {
1887 return;
1888 }
1889
1890 if (name && PS(session_status) == php_session_active) {
1891 php_error_docref(NULL, E_WARNING, "Cannot change save handler module when session is active");
1892 RETURN_FALSE;
1893 }
1894
1895 if (name && SG(headers_sent)) {
1896 php_error_docref(NULL, E_WARNING, "Cannot change save handler module when headers already sent");
1897 RETURN_FALSE;
1898 }
1899
1900 /* Set return_value to current module name */
1901 if (PS(mod) && PS(mod)->s_name) {
1902 RETVAL_STRING(PS(mod)->s_name);
1903 } else {
1904 RETVAL_EMPTY_STRING();
1905 }
1906
1907 if (name) {
1908 if (!_php_find_ps_module(ZSTR_VAL(name))) {
1909 php_error_docref(NULL, E_WARNING, "Cannot find named PHP session module (%s)", ZSTR_VAL(name));
1910
1911 zval_ptr_dtor_str(return_value);
1912 RETURN_FALSE;
1913 }
1914 if (PS(mod_data) || PS(mod_user_implemented)) {
1915 PS(mod)->s_close(&PS(mod_data));
1916 }
1917 PS(mod_data) = NULL;
1918
1919 ini_name = zend_string_init("session.save_handler", sizeof("session.save_handler") - 1, 0);
1920 zend_alter_ini_entry(ini_name, name, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1921 zend_string_release_ex(ini_name, 0);
1922 }
1923 }
1924 /* }}} */
1925
set_user_save_handler_ini(void)1926 static inline void set_user_save_handler_ini(void) {
1927 zend_string *ini_name, *ini_val;
1928
1929 ini_name = zend_string_init("session.save_handler", sizeof("session.save_handler") - 1, 0);
1930 ini_val = zend_string_init("user", sizeof("user") - 1, 0);
1931 PS(set_handler) = 1;
1932 zend_alter_ini_entry(ini_name, ini_val, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1933 PS(set_handler) = 0;
1934 zend_string_release_ex(ini_val, 0);
1935 zend_string_release_ex(ini_name, 0);
1936 }
1937
1938 /* {{{ proto bool session_set_save_handler(string open, string close, string read, string write, string destroy, string gc, string create_sid)
1939 Sets user-level functions */
PHP_FUNCTION(session_set_save_handler)1940 static PHP_FUNCTION(session_set_save_handler)
1941 {
1942 zval *args = NULL;
1943 int i, num_args, argc = ZEND_NUM_ARGS();
1944
1945 if (PS(session_status) == php_session_active) {
1946 php_error_docref(NULL, E_WARNING, "Cannot change save handler when session is active");
1947 RETURN_FALSE;
1948 }
1949
1950 if (SG(headers_sent)) {
1951 php_error_docref(NULL, E_WARNING, "Cannot change save handler when headers already sent");
1952 RETURN_FALSE;
1953 }
1954
1955 if (argc > 0 && argc <= 2) {
1956 zval *obj = NULL;
1957 zend_string *func_name;
1958 zend_function *current_mptr;
1959 zend_bool register_shutdown = 1;
1960
1961 if (zend_parse_parameters(ZEND_NUM_ARGS(), "O|b", &obj, php_session_iface_entry, ®ister_shutdown) == FAILURE) {
1962 RETURN_FALSE;
1963 }
1964
1965 /* For compatibility reason, implemented interface is not checked */
1966 /* Find implemented methods - SessionHandlerInterface */
1967 i = 0;
1968 ZEND_HASH_FOREACH_STR_KEY(&php_session_iface_entry->function_table, func_name) {
1969 if ((current_mptr = zend_hash_find_ptr(&Z_OBJCE_P(obj)->function_table, func_name))) {
1970 if (!Z_ISUNDEF(PS(mod_user_names).names[i])) {
1971 zval_ptr_dtor(&PS(mod_user_names).names[i]);
1972 }
1973
1974 array_init_size(&PS(mod_user_names).names[i], 2);
1975 Z_ADDREF_P(obj);
1976 add_next_index_zval(&PS(mod_user_names).names[i], obj);
1977 add_next_index_str(&PS(mod_user_names).names[i], zend_string_copy(func_name));
1978 } else {
1979 php_error_docref(NULL, E_ERROR, "Session handler's function table is corrupt");
1980 RETURN_FALSE;
1981 }
1982
1983 ++i;
1984 } ZEND_HASH_FOREACH_END();
1985
1986 /* Find implemented methods - SessionIdInterface (optional) */
1987 ZEND_HASH_FOREACH_STR_KEY(&php_session_id_iface_entry->function_table, func_name) {
1988 if ((current_mptr = zend_hash_find_ptr(&Z_OBJCE_P(obj)->function_table, func_name))) {
1989 if (!Z_ISUNDEF(PS(mod_user_names).names[i])) {
1990 zval_ptr_dtor(&PS(mod_user_names).names[i]);
1991 }
1992 array_init_size(&PS(mod_user_names).names[i], 2);
1993 Z_ADDREF_P(obj);
1994 add_next_index_zval(&PS(mod_user_names).names[i], obj);
1995 add_next_index_str(&PS(mod_user_names).names[i], zend_string_copy(func_name));
1996 } else {
1997 if (!Z_ISUNDEF(PS(mod_user_names).names[i])) {
1998 zval_ptr_dtor(&PS(mod_user_names).names[i]);
1999 ZVAL_UNDEF(&PS(mod_user_names).names[i]);
2000 }
2001 }
2002
2003 ++i;
2004 } ZEND_HASH_FOREACH_END();
2005
2006 /* Find implemented methods - SessionUpdateTimestampInterface (optional) */
2007 ZEND_HASH_FOREACH_STR_KEY(&php_session_update_timestamp_iface_entry->function_table, func_name) {
2008 if ((current_mptr = zend_hash_find_ptr(&Z_OBJCE_P(obj)->function_table, func_name))) {
2009 if (!Z_ISUNDEF(PS(mod_user_names).names[i])) {
2010 zval_ptr_dtor(&PS(mod_user_names).names[i]);
2011 }
2012 array_init_size(&PS(mod_user_names).names[i], 2);
2013 Z_ADDREF_P(obj);
2014 add_next_index_zval(&PS(mod_user_names).names[i], obj);
2015 add_next_index_str(&PS(mod_user_names).names[i], zend_string_copy(func_name));
2016 } else {
2017 if (!Z_ISUNDEF(PS(mod_user_names).names[i])) {
2018 zval_ptr_dtor(&PS(mod_user_names).names[i]);
2019 ZVAL_UNDEF(&PS(mod_user_names).names[i]);
2020 }
2021 }
2022 ++i;
2023 } ZEND_HASH_FOREACH_END();
2024
2025 if (register_shutdown) {
2026 /* create shutdown function */
2027 php_shutdown_function_entry shutdown_function_entry;
2028 shutdown_function_entry.arg_count = 1;
2029 shutdown_function_entry.arguments = (zval *) safe_emalloc(sizeof(zval), 1, 0);
2030
2031 ZVAL_STRING(&shutdown_function_entry.arguments[0], "session_register_shutdown");
2032
2033 /* add shutdown function, removing the old one if it exists */
2034 if (!register_user_shutdown_function("session_shutdown", sizeof("session_shutdown") - 1, &shutdown_function_entry)) {
2035 zval_ptr_dtor(&shutdown_function_entry.arguments[0]);
2036 efree(shutdown_function_entry.arguments);
2037 php_error_docref(NULL, E_WARNING, "Unable to register session shutdown function");
2038 RETURN_FALSE;
2039 }
2040 } else {
2041 /* remove shutdown function */
2042 remove_user_shutdown_function("session_shutdown", sizeof("session_shutdown") - 1);
2043 }
2044
2045 if (PS(session_status) != php_session_active && (!PS(mod) || PS(mod) != &ps_mod_user)) {
2046 set_user_save_handler_ini();
2047 }
2048
2049 RETURN_TRUE;
2050 }
2051
2052 /* Set procedural save handler functions */
2053 if (argc < 6 || PS_NUM_APIS < argc) {
2054 WRONG_PARAM_COUNT;
2055 }
2056
2057 if (zend_parse_parameters(argc, "+", &args, &num_args) == FAILURE) {
2058 return;
2059 }
2060
2061 /* remove shutdown function */
2062 remove_user_shutdown_function("session_shutdown", sizeof("session_shutdown") - 1);
2063
2064 /* At this point argc can only be between 6 and PS_NUM_APIS */
2065 for (i = 0; i < argc; i++) {
2066 if (!zend_is_callable(&args[i], 0, NULL)) {
2067 zend_string *name = zend_get_callable_name(&args[i]);
2068 php_error_docref(NULL, E_WARNING, "Argument %d is not a valid callback", i+1);
2069 zend_string_release_ex(name, 0);
2070 RETURN_FALSE;
2071 }
2072 }
2073
2074 if (!PS(mod) || PS(mod) != &ps_mod_user) {
2075 set_user_save_handler_ini();
2076 }
2077
2078 for (i = 0; i < argc; i++) {
2079 if (!Z_ISUNDEF(PS(mod_user_names).names[i])) {
2080 zval_ptr_dtor(&PS(mod_user_names).names[i]);
2081 }
2082 ZVAL_COPY(&PS(mod_user_names).names[i], &args[i]);
2083 }
2084
2085 RETURN_TRUE;
2086 }
2087 /* }}} */
2088
2089 /* {{{ proto string session_save_path([string newname])
2090 Return the current save path passed to module_name. If newname is given, the save path is replaced with newname */
PHP_FUNCTION(session_save_path)2091 static PHP_FUNCTION(session_save_path)
2092 {
2093 zend_string *name = NULL;
2094 zend_string *ini_name;
2095
2096 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|S", &name) == FAILURE) {
2097 return;
2098 }
2099
2100 if (name && PS(session_status) == php_session_active) {
2101 php_error_docref(NULL, E_WARNING, "Cannot change save path when session is active");
2102 RETURN_FALSE;
2103 }
2104
2105 if (name && SG(headers_sent)) {
2106 php_error_docref(NULL, E_WARNING, "Cannot change save path when headers already sent");
2107 RETURN_FALSE;
2108 }
2109
2110 RETVAL_STRING(PS(save_path));
2111
2112 if (name) {
2113 if (memchr(ZSTR_VAL(name), '\0', ZSTR_LEN(name)) != NULL) {
2114 php_error_docref(NULL, E_WARNING, "The save_path cannot contain NULL characters");
2115 zval_ptr_dtor_str(return_value);
2116 RETURN_FALSE;
2117 }
2118 ini_name = zend_string_init("session.save_path", sizeof("session.save_path") - 1, 0);
2119 zend_alter_ini_entry(ini_name, name, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
2120 zend_string_release_ex(ini_name, 0);
2121 }
2122 }
2123 /* }}} */
2124
2125 /* {{{ proto string session_id([string newid])
2126 Return the current session id. If newid is given, the session id is replaced with newid */
PHP_FUNCTION(session_id)2127 static PHP_FUNCTION(session_id)
2128 {
2129 zend_string *name = NULL;
2130 int argc = ZEND_NUM_ARGS();
2131
2132 if (zend_parse_parameters(argc, "|S", &name) == FAILURE) {
2133 return;
2134 }
2135
2136 if (name && PS(use_cookies) && SG(headers_sent)) {
2137 php_error_docref(NULL, E_WARNING, "Cannot change session id when headers already sent");
2138 RETURN_FALSE;
2139 }
2140
2141 if (name && PS(session_status) == php_session_active) {
2142 php_error_docref(NULL, E_WARNING, "Cannot change session id when session is active");
2143 RETURN_FALSE;
2144 }
2145
2146 if (PS(id)) {
2147 /* keep compatibility for "\0" characters ???
2148 * see: ext/session/tests/session_id_error3.phpt */
2149 size_t len = strlen(ZSTR_VAL(PS(id)));
2150 if (UNEXPECTED(len != ZSTR_LEN(PS(id)))) {
2151 RETVAL_NEW_STR(zend_string_init(ZSTR_VAL(PS(id)), len, 0));
2152 } else {
2153 RETVAL_STR_COPY(PS(id));
2154 }
2155 } else {
2156 RETVAL_EMPTY_STRING();
2157 }
2158
2159 if (name) {
2160 if (PS(id)) {
2161 zend_string_release_ex(PS(id), 0);
2162 }
2163 PS(id) = zend_string_copy(name);
2164 }
2165 }
2166 /* }}} */
2167
2168 /* {{{ proto bool session_regenerate_id([bool delete_old_session])
2169 Update the current session id with a newly generated one. If delete_old_session is set to true, remove the old session. */
PHP_FUNCTION(session_regenerate_id)2170 static PHP_FUNCTION(session_regenerate_id)
2171 {
2172 zend_bool del_ses = 0;
2173 zend_string *data;
2174
2175 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|b", &del_ses) == FAILURE) {
2176 return;
2177 }
2178
2179 if (PS(session_status) != php_session_active) {
2180 php_error_docref(NULL, E_WARNING, "Cannot regenerate session id - session is not active");
2181 RETURN_FALSE;
2182 }
2183
2184 if (SG(headers_sent)) {
2185 php_error_docref(NULL, E_WARNING, "Cannot regenerate session id - headers already sent");
2186 RETURN_FALSE;
2187 }
2188
2189 /* Process old session data */
2190 if (del_ses) {
2191 if (PS(mod)->s_destroy(&PS(mod_data), PS(id)) == FAILURE) {
2192 PS(mod)->s_close(&PS(mod_data));
2193 PS(session_status) = php_session_none;
2194 php_error_docref(NULL, E_WARNING, "Session object destruction failed. ID: %s (path: %s)", PS(mod)->s_name, PS(save_path));
2195 RETURN_FALSE;
2196 }
2197 } else {
2198 int ret;
2199 data = php_session_encode();
2200 if (data) {
2201 ret = PS(mod)->s_write(&PS(mod_data), PS(id), data, PS(gc_maxlifetime));
2202 zend_string_release_ex(data, 0);
2203 } else {
2204 ret = PS(mod)->s_write(&PS(mod_data), PS(id), ZSTR_EMPTY_ALLOC(), PS(gc_maxlifetime));
2205 }
2206 if (ret == FAILURE) {
2207 PS(mod)->s_close(&PS(mod_data));
2208 PS(session_status) = php_session_none;
2209 php_error_docref(NULL, E_WARNING, "Session write failed. ID: %s (path: %s)", PS(mod)->s_name, PS(save_path));
2210 RETURN_FALSE;
2211 }
2212 }
2213 PS(mod)->s_close(&PS(mod_data));
2214
2215 /* New session data */
2216 if (PS(session_vars)) {
2217 zend_string_release_ex(PS(session_vars), 0);
2218 PS(session_vars) = NULL;
2219 }
2220 zend_string_release_ex(PS(id), 0);
2221 PS(id) = NULL;
2222
2223 if (PS(mod)->s_open(&PS(mod_data), PS(save_path), PS(session_name)) == FAILURE) {
2224 PS(session_status) = php_session_none;
2225 zend_throw_error(NULL, "Failed to open session: %s (path: %s)", PS(mod)->s_name, PS(save_path));
2226 RETURN_FALSE;
2227 }
2228
2229 PS(id) = PS(mod)->s_create_sid(&PS(mod_data));
2230 if (!PS(id)) {
2231 PS(session_status) = php_session_none;
2232 zend_throw_error(NULL, "Failed to create new session ID: %s (path: %s)", PS(mod)->s_name, PS(save_path));
2233 RETURN_FALSE;
2234 }
2235 if (PS(use_strict_mode) && PS(mod)->s_validate_sid &&
2236 PS(mod)->s_validate_sid(&PS(mod_data), PS(id)) == SUCCESS) {
2237 zend_string_release_ex(PS(id), 0);
2238 PS(id) = PS(mod)->s_create_sid(&PS(mod_data));
2239 if (!PS(id)) {
2240 PS(mod)->s_close(&PS(mod_data));
2241 PS(session_status) = php_session_none;
2242 zend_throw_error(NULL, "Failed to create session ID by collision: %s (path: %s)", PS(mod)->s_name, PS(save_path));
2243 RETURN_FALSE;
2244 }
2245 }
2246 /* Read is required to make new session data at this point. */
2247 if (PS(mod)->s_read(&PS(mod_data), PS(id), &data, PS(gc_maxlifetime)) == FAILURE) {
2248 PS(mod)->s_close(&PS(mod_data));
2249 PS(session_status) = php_session_none;
2250 zend_throw_error(NULL, "Failed to create(read) session ID: %s (path: %s)", PS(mod)->s_name, PS(save_path));
2251 RETURN_FALSE;
2252 }
2253 if (data) {
2254 zend_string_release_ex(data, 0);
2255 }
2256
2257 if (PS(use_cookies)) {
2258 PS(send_cookie) = 1;
2259 }
2260 if (php_session_reset_id() == FAILURE) {
2261 RETURN_FALSE;
2262 }
2263
2264 RETURN_TRUE;
2265 }
2266 /* }}} */
2267
2268 /* {{{ proto string session_create_id([string prefix])
2269 Generate new session ID. Intended for user save handlers. */
2270 /* This is not used yet */
PHP_FUNCTION(session_create_id)2271 static PHP_FUNCTION(session_create_id)
2272 {
2273 zend_string *prefix = NULL, *new_id;
2274 smart_str id = {0};
2275
2276 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|S", &prefix) == FAILURE) {
2277 return;
2278 }
2279
2280 if (prefix && ZSTR_LEN(prefix)) {
2281 if (php_session_valid_key(ZSTR_VAL(prefix)) == FAILURE) {
2282 /* E_ERROR raised for security reason. */
2283 php_error_docref(NULL, E_WARNING, "Prefix cannot contain special characters. Only aphanumeric, ',', '-' are allowed");
2284 RETURN_FALSE;
2285 } else {
2286 smart_str_append(&id, prefix);
2287 }
2288 }
2289
2290 if (!PS(in_save_handler) && PS(session_status) == php_session_active) {
2291 int limit = 3;
2292 while (limit--) {
2293 new_id = PS(mod)->s_create_sid(&PS(mod_data));
2294 if (!PS(mod)->s_validate_sid) {
2295 break;
2296 } else {
2297 /* Detect collision and retry */
2298 if (PS(mod)->s_validate_sid(&PS(mod_data), new_id) == SUCCESS) {
2299 zend_string_release_ex(new_id, 0);
2300 new_id = NULL;
2301 continue;
2302 }
2303 break;
2304 }
2305 }
2306 } else {
2307 new_id = php_session_create_id(NULL);
2308 }
2309
2310 if (new_id) {
2311 smart_str_append(&id, new_id);
2312 zend_string_release_ex(new_id, 0);
2313 } else {
2314 smart_str_free(&id);
2315 php_error_docref(NULL, E_WARNING, "Failed to create new ID");
2316 RETURN_FALSE;
2317 }
2318 smart_str_0(&id);
2319 RETVAL_NEW_STR(id.s);
2320 }
2321 /* }}} */
2322
2323 /* {{{ proto string session_cache_limiter([string new_cache_limiter])
2324 Return the current cache limiter. If new_cache_limited is given, the current cache_limiter is replaced with new_cache_limiter */
PHP_FUNCTION(session_cache_limiter)2325 static PHP_FUNCTION(session_cache_limiter)
2326 {
2327 zend_string *limiter = NULL;
2328 zend_string *ini_name;
2329
2330 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|S", &limiter) == FAILURE) {
2331 return;
2332 }
2333
2334 if (limiter && PS(session_status) == php_session_active) {
2335 php_error_docref(NULL, E_WARNING, "Cannot change cache limiter when session is active");
2336 RETURN_FALSE;
2337 }
2338
2339 if (limiter && SG(headers_sent)) {
2340 php_error_docref(NULL, E_WARNING, "Cannot change cache limiter when headers already sent");
2341 RETURN_FALSE;
2342 }
2343
2344 RETVAL_STRING(PS(cache_limiter));
2345
2346 if (limiter) {
2347 ini_name = zend_string_init("session.cache_limiter", sizeof("session.cache_limiter") - 1, 0);
2348 zend_alter_ini_entry(ini_name, limiter, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
2349 zend_string_release_ex(ini_name, 0);
2350 }
2351 }
2352 /* }}} */
2353
2354 /* {{{ proto int session_cache_expire([int new_cache_expire])
2355 Return the current cache expire. If new_cache_expire is given, the current cache_expire is replaced with new_cache_expire */
PHP_FUNCTION(session_cache_expire)2356 static PHP_FUNCTION(session_cache_expire)
2357 {
2358 zval *expires = NULL;
2359 zend_string *ini_name;
2360
2361 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|z", &expires) == FAILURE) {
2362 return;
2363 }
2364
2365 if (expires && PS(session_status) == php_session_active) {
2366 php_error_docref(NULL, E_WARNING, "Cannot change cache expire when session is active");
2367 RETURN_LONG(PS(cache_expire));
2368 }
2369
2370 if (expires && SG(headers_sent)) {
2371 php_error_docref(NULL, E_WARNING, "Cannot change cache expire when headers already sent");
2372 RETURN_FALSE;
2373 }
2374
2375 RETVAL_LONG(PS(cache_expire));
2376
2377 if (expires) {
2378 if (!try_convert_to_string(expires)) {
2379 return;
2380 }
2381
2382 ini_name = zend_string_init("session.cache_expire", sizeof("session.cache_expire") - 1, 0);
2383 zend_alter_ini_entry(ini_name, Z_STR_P(expires), ZEND_INI_USER, ZEND_INI_STAGE_RUNTIME);
2384 zend_string_release_ex(ini_name, 0);
2385 }
2386 }
2387 /* }}} */
2388
2389 /* {{{ proto string session_encode(void)
2390 Serializes the current setup and returns the serialized representation */
PHP_FUNCTION(session_encode)2391 static PHP_FUNCTION(session_encode)
2392 {
2393 zend_string *enc;
2394
2395 if (zend_parse_parameters_none() == FAILURE) {
2396 return;
2397 }
2398
2399 enc = php_session_encode();
2400 if (enc == NULL) {
2401 RETURN_FALSE;
2402 }
2403
2404 RETURN_STR(enc);
2405 }
2406 /* }}} */
2407
2408 /* {{{ proto bool session_decode(string data)
2409 Deserializes data and reinitializes the variables */
PHP_FUNCTION(session_decode)2410 static PHP_FUNCTION(session_decode)
2411 {
2412 zend_string *str = NULL;
2413
2414 if (zend_parse_parameters(ZEND_NUM_ARGS(), "S", &str) == FAILURE) {
2415 return;
2416 }
2417
2418 if (PS(session_status) != php_session_active) {
2419 php_error_docref(NULL, E_WARNING, "Session is not active. You cannot decode session data");
2420 RETURN_FALSE;
2421 }
2422
2423 if (php_session_decode(str) == FAILURE) {
2424 RETURN_FALSE;
2425 }
2426 RETURN_TRUE;
2427 }
2428 /* }}} */
2429
php_session_start_set_ini(zend_string * varname,zend_string * new_value)2430 static int php_session_start_set_ini(zend_string *varname, zend_string *new_value) {
2431 int ret;
2432 smart_str buf ={0};
2433 smart_str_appends(&buf, "session");
2434 smart_str_appendc(&buf, '.');
2435 smart_str_append(&buf, varname);
2436 smart_str_0(&buf);
2437 ret = zend_alter_ini_entry_ex(buf.s, new_value, PHP_INI_USER, PHP_INI_STAGE_RUNTIME, 0);
2438 smart_str_free(&buf);
2439 return ret;
2440 }
2441
2442 /* {{{ proto bool session_start([array options])
2443 + Begin session */
PHP_FUNCTION(session_start)2444 static PHP_FUNCTION(session_start)
2445 {
2446 zval *options = NULL;
2447 zval *value;
2448 zend_ulong num_idx;
2449 zend_string *str_idx;
2450 zend_long read_and_close = 0;
2451
2452 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|a", &options) == FAILURE) {
2453 RETURN_FALSE;
2454 }
2455
2456 if (PS(session_status) == php_session_active) {
2457 php_error_docref(NULL, E_NOTICE, "A session had already been started - ignoring");
2458 RETURN_TRUE;
2459 }
2460
2461 /*
2462 * TODO: To prevent unusable session with trans sid, actual output started status is
2463 * required. i.e. There shouldn't be any outputs in output buffer, otherwise session
2464 * module is unable to rewrite output.
2465 */
2466 if (PS(use_cookies) && SG(headers_sent)) {
2467 php_error_docref(NULL, E_WARNING, "Cannot start session when headers already sent");
2468 RETURN_FALSE;
2469 }
2470
2471 /* set options */
2472 if (options) {
2473 ZEND_HASH_FOREACH_KEY_VAL(Z_ARRVAL_P(options), num_idx, str_idx, value) {
2474 if (str_idx) {
2475 switch(Z_TYPE_P(value)) {
2476 case IS_STRING:
2477 case IS_TRUE:
2478 case IS_FALSE:
2479 case IS_LONG:
2480 if (zend_string_equals_literal(str_idx, "read_and_close")) {
2481 read_and_close = zval_get_long(value);
2482 } else {
2483 zend_string *tmp_val;
2484 zend_string *val = zval_get_tmp_string(value, &tmp_val);
2485 if (php_session_start_set_ini(str_idx, val) == FAILURE) {
2486 php_error_docref(NULL, E_WARNING, "Setting option '%s' failed", ZSTR_VAL(str_idx));
2487 }
2488 zend_tmp_string_release(tmp_val);
2489 }
2490 break;
2491 default:
2492 php_error_docref(NULL, E_WARNING, "Option(%s) value must be string, boolean or long", ZSTR_VAL(str_idx));
2493 break;
2494 }
2495 }
2496 (void) num_idx;
2497 } ZEND_HASH_FOREACH_END();
2498 }
2499
2500 php_session_start();
2501
2502 if (PS(session_status) != php_session_active) {
2503 IF_SESSION_VARS() {
2504 zval *sess_var = Z_REFVAL(PS(http_session_vars));
2505 SEPARATE_ARRAY(sess_var);
2506 /* Clean $_SESSION. */
2507 zend_hash_clean(Z_ARRVAL_P(sess_var));
2508 }
2509 RETURN_FALSE;
2510 }
2511
2512 if (read_and_close) {
2513 php_session_flush(0);
2514 }
2515
2516 RETURN_TRUE;
2517 }
2518 /* }}} */
2519
2520 /* {{{ proto bool session_destroy(void)
2521 Destroy the current session and all data associated with it */
PHP_FUNCTION(session_destroy)2522 static PHP_FUNCTION(session_destroy)
2523 {
2524 if (zend_parse_parameters_none() == FAILURE) {
2525 return;
2526 }
2527
2528 RETURN_BOOL(php_session_destroy() == SUCCESS);
2529 }
2530 /* }}} */
2531
2532 /* {{{ proto bool session_unset(void)
2533 Unset all registered variables */
PHP_FUNCTION(session_unset)2534 static PHP_FUNCTION(session_unset)
2535 {
2536 if (zend_parse_parameters_none() == FAILURE) {
2537 return;
2538 }
2539
2540 if (PS(session_status) != php_session_active) {
2541 RETURN_FALSE;
2542 }
2543
2544 IF_SESSION_VARS() {
2545 zval *sess_var = Z_REFVAL(PS(http_session_vars));
2546 SEPARATE_ARRAY(sess_var);
2547
2548 /* Clean $_SESSION. */
2549 zend_hash_clean(Z_ARRVAL_P(sess_var));
2550 }
2551 RETURN_TRUE;
2552 }
2553 /* }}} */
2554
2555 /* {{{ proto int session_gc(void)
2556 Perform GC and return number of deleted sessions */
PHP_FUNCTION(session_gc)2557 static PHP_FUNCTION(session_gc)
2558 {
2559 zend_long num;
2560
2561 if (zend_parse_parameters_none() == FAILURE) {
2562 return;
2563 }
2564
2565 if (PS(session_status) != php_session_active) {
2566 php_error_docref(NULL, E_WARNING, "Session is not active");
2567 RETURN_FALSE;
2568 }
2569
2570 num = php_session_gc(1);
2571 if (num < 0) {
2572 RETURN_FALSE;
2573 }
2574
2575 RETURN_LONG(num);
2576 }
2577 /* }}} */
2578
2579
2580 /* {{{ proto bool session_write_close(void)
2581 Write session data and end session */
PHP_FUNCTION(session_write_close)2582 static PHP_FUNCTION(session_write_close)
2583 {
2584 if (zend_parse_parameters_none() == FAILURE) {
2585 return;
2586 }
2587
2588 if (PS(session_status) != php_session_active) {
2589 RETURN_FALSE;
2590 }
2591 php_session_flush(1);
2592 RETURN_TRUE;
2593 }
2594 /* }}} */
2595
2596 /* {{{ proto bool session_abort(void)
2597 Abort session and end session. Session data will not be written */
PHP_FUNCTION(session_abort)2598 static PHP_FUNCTION(session_abort)
2599 {
2600 if (zend_parse_parameters_none() == FAILURE) {
2601 return;
2602 }
2603
2604 if (PS(session_status) != php_session_active) {
2605 RETURN_FALSE;
2606 }
2607 php_session_abort();
2608 RETURN_TRUE;
2609 }
2610 /* }}} */
2611
2612 /* {{{ proto bool session_reset(void)
2613 Reset session data from saved session data */
PHP_FUNCTION(session_reset)2614 static PHP_FUNCTION(session_reset)
2615 {
2616 if (zend_parse_parameters_none() == FAILURE) {
2617 return;
2618 }
2619
2620 if (PS(session_status) != php_session_active) {
2621 RETURN_FALSE;
2622 }
2623 php_session_reset();
2624 RETURN_TRUE;
2625 }
2626 /* }}} */
2627
2628 /* {{{ proto int session_status(void)
2629 Returns the current session status */
PHP_FUNCTION(session_status)2630 static PHP_FUNCTION(session_status)
2631 {
2632 if (zend_parse_parameters_none() == FAILURE) {
2633 return;
2634 }
2635
2636 RETURN_LONG(PS(session_status));
2637 }
2638 /* }}} */
2639
2640 /* {{{ proto void session_register_shutdown(void)
2641 Registers session_write_close() as a shutdown function */
PHP_FUNCTION(session_register_shutdown)2642 static PHP_FUNCTION(session_register_shutdown)
2643 {
2644 php_shutdown_function_entry shutdown_function_entry;
2645
2646 /* This function is registered itself as a shutdown function by
2647 * session_set_save_handler($obj). The reason we now register another
2648 * shutdown function is in case the user registered their own shutdown
2649 * function after calling session_set_save_handler(), which expects
2650 * the session still to be available.
2651 */
2652
2653 shutdown_function_entry.arg_count = 1;
2654 shutdown_function_entry.arguments = (zval *) safe_emalloc(sizeof(zval), 1, 0);
2655
2656 ZVAL_STRING(&shutdown_function_entry.arguments[0], "session_write_close");
2657
2658 if (!append_user_shutdown_function(shutdown_function_entry)) {
2659 zval_ptr_dtor(&shutdown_function_entry.arguments[0]);
2660 efree(shutdown_function_entry.arguments);
2661
2662 /* Unable to register shutdown function, presumably because of lack
2663 * of memory, so flush the session now. It would be done in rshutdown
2664 * anyway but the handler will have had it's dtor called by then.
2665 * If the user does have a later shutdown function which needs the
2666 * session then tough luck.
2667 */
2668 php_session_flush(1);
2669 php_error_docref(NULL, E_WARNING, "Unable to register session flush function");
2670 }
2671 }
2672 /* }}} */
2673
2674 /* {{{ arginfo */
2675 ZEND_BEGIN_ARG_INFO_EX(arginfo_session_name, 0, 0, 0)
2676 ZEND_ARG_INFO(0, name)
2677 ZEND_END_ARG_INFO()
2678
2679 ZEND_BEGIN_ARG_INFO_EX(arginfo_session_module_name, 0, 0, 0)
2680 ZEND_ARG_INFO(0, module)
2681 ZEND_END_ARG_INFO()
2682
2683 ZEND_BEGIN_ARG_INFO_EX(arginfo_session_save_path, 0, 0, 0)
2684 ZEND_ARG_INFO(0, path)
2685 ZEND_END_ARG_INFO()
2686
2687 ZEND_BEGIN_ARG_INFO_EX(arginfo_session_id, 0, 0, 0)
2688 ZEND_ARG_INFO(0, id)
2689 ZEND_END_ARG_INFO()
2690
2691 ZEND_BEGIN_ARG_INFO_EX(arginfo_session_create_id, 0, 0, 0)
2692 ZEND_ARG_INFO(0, prefix)
2693 ZEND_END_ARG_INFO()
2694
2695 ZEND_BEGIN_ARG_INFO_EX(arginfo_session_regenerate_id, 0, 0, 0)
2696 ZEND_ARG_INFO(0, delete_old_session)
2697 ZEND_END_ARG_INFO()
2698
2699 ZEND_BEGIN_ARG_INFO_EX(arginfo_session_decode, 0, 0, 1)
2700 ZEND_ARG_INFO(0, data)
2701 ZEND_END_ARG_INFO()
2702
2703 ZEND_BEGIN_ARG_INFO(arginfo_session_void, 0)
2704 ZEND_END_ARG_INFO()
2705
2706 ZEND_BEGIN_ARG_INFO_EX(arginfo_session_set_save_handler, 0, 0, 1)
2707 ZEND_ARG_INFO(0, open)
2708 ZEND_ARG_INFO(0, close)
2709 ZEND_ARG_INFO(0, read)
2710 ZEND_ARG_INFO(0, write)
2711 ZEND_ARG_INFO(0, destroy)
2712 ZEND_ARG_INFO(0, gc)
2713 ZEND_ARG_INFO(0, create_sid)
2714 ZEND_ARG_INFO(0, validate_sid)
2715 ZEND_ARG_INFO(0, update_timestamp)
2716 ZEND_END_ARG_INFO()
2717
2718 ZEND_BEGIN_ARG_INFO_EX(arginfo_session_cache_limiter, 0, 0, 0)
2719 ZEND_ARG_INFO(0, cache_limiter)
2720 ZEND_END_ARG_INFO()
2721
2722 ZEND_BEGIN_ARG_INFO_EX(arginfo_session_cache_expire, 0, 0, 0)
2723 ZEND_ARG_INFO(0, new_cache_expire)
2724 ZEND_END_ARG_INFO()
2725
2726 ZEND_BEGIN_ARG_INFO_EX(arginfo_session_set_cookie_params, 0, 0, 1)
2727 ZEND_ARG_INFO(0, lifetime_or_options)
2728 ZEND_ARG_INFO(0, path)
2729 ZEND_ARG_INFO(0, domain)
2730 ZEND_ARG_INFO(0, secure)
2731 ZEND_ARG_INFO(0, httponly)
2732 ZEND_END_ARG_INFO()
2733
2734 ZEND_BEGIN_ARG_INFO(arginfo_session_class_open, 0)
2735 ZEND_ARG_INFO(0, save_path)
2736 ZEND_ARG_INFO(0, session_name)
2737 ZEND_END_ARG_INFO()
2738
2739 ZEND_BEGIN_ARG_INFO(arginfo_session_class_close, 0)
2740 ZEND_END_ARG_INFO()
2741
2742 ZEND_BEGIN_ARG_INFO(arginfo_session_class_read, 0)
2743 ZEND_ARG_INFO(0, key)
2744 ZEND_END_ARG_INFO()
2745
2746 ZEND_BEGIN_ARG_INFO(arginfo_session_class_write, 0)
2747 ZEND_ARG_INFO(0, key)
2748 ZEND_ARG_INFO(0, val)
2749 ZEND_END_ARG_INFO()
2750
2751 ZEND_BEGIN_ARG_INFO(arginfo_session_class_destroy, 0)
2752 ZEND_ARG_INFO(0, key)
2753 ZEND_END_ARG_INFO()
2754
2755 ZEND_BEGIN_ARG_INFO(arginfo_session_class_gc, 0)
2756 ZEND_ARG_INFO(0, maxlifetime)
2757 ZEND_END_ARG_INFO()
2758
2759 ZEND_BEGIN_ARG_INFO(arginfo_session_class_create_sid, 0)
2760 ZEND_END_ARG_INFO()
2761
2762 ZEND_BEGIN_ARG_INFO(arginfo_session_class_validateId, 0)
2763 ZEND_ARG_INFO(0, key)
2764 ZEND_END_ARG_INFO()
2765
2766 ZEND_BEGIN_ARG_INFO(arginfo_session_class_updateTimestamp, 0)
2767 ZEND_ARG_INFO(0, key)
2768 ZEND_ARG_INFO(0, val)
2769 ZEND_END_ARG_INFO()
2770
2771 ZEND_BEGIN_ARG_INFO_EX(arginfo_session_start, 0, 0, 0)
2772 ZEND_ARG_INFO(0, options) /* array */
2773 ZEND_END_ARG_INFO()
2774 /* }}} */
2775
2776 /* {{{ session_functions[]
2777 */
2778 static const zend_function_entry session_functions[] = {
2779 PHP_FE(session_name, arginfo_session_name)
2780 PHP_FE(session_module_name, arginfo_session_module_name)
2781 PHP_FE(session_save_path, arginfo_session_save_path)
2782 PHP_FE(session_id, arginfo_session_id)
2783 PHP_FE(session_create_id, arginfo_session_create_id)
2784 PHP_FE(session_regenerate_id, arginfo_session_regenerate_id)
2785 PHP_FE(session_decode, arginfo_session_decode)
2786 PHP_FE(session_encode, arginfo_session_void)
2787 PHP_FE(session_start, arginfo_session_start)
2788 PHP_FE(session_destroy, arginfo_session_void)
2789 PHP_FE(session_unset, arginfo_session_void)
2790 PHP_FE(session_gc, arginfo_session_void)
2791 PHP_FE(session_set_save_handler, arginfo_session_set_save_handler)
2792 PHP_FE(session_cache_limiter, arginfo_session_cache_limiter)
2793 PHP_FE(session_cache_expire, arginfo_session_cache_expire)
2794 PHP_FE(session_set_cookie_params, arginfo_session_set_cookie_params)
2795 PHP_FE(session_get_cookie_params, arginfo_session_void)
2796 PHP_FE(session_write_close, arginfo_session_void)
2797 PHP_FE(session_abort, arginfo_session_void)
2798 PHP_FE(session_reset, arginfo_session_void)
2799 PHP_FE(session_status, arginfo_session_void)
2800 PHP_FE(session_register_shutdown, arginfo_session_void)
2801 PHP_FALIAS(session_commit, session_write_close, arginfo_session_void)
2802 PHP_FE_END
2803 };
2804 /* }}} */
2805
2806 /* {{{ SessionHandlerInterface functions[]
2807 */
2808 static const zend_function_entry php_session_iface_functions[] = {
2809 PHP_ABSTRACT_ME(SessionHandlerInterface, open, arginfo_session_class_open)
2810 PHP_ABSTRACT_ME(SessionHandlerInterface, close, arginfo_session_class_close)
2811 PHP_ABSTRACT_ME(SessionHandlerInterface, read, arginfo_session_class_read)
2812 PHP_ABSTRACT_ME(SessionHandlerInterface, write, arginfo_session_class_write)
2813 PHP_ABSTRACT_ME(SessionHandlerInterface, destroy, arginfo_session_class_destroy)
2814 PHP_ABSTRACT_ME(SessionHandlerInterface, gc, arginfo_session_class_gc)
2815 PHP_FE_END
2816 };
2817 /* }}} */
2818
2819 /* {{{ SessionIdInterface functions[]
2820 */
2821 static const zend_function_entry php_session_id_iface_functions[] = {
2822 PHP_ABSTRACT_ME(SessionIdInterface, create_sid, arginfo_session_class_create_sid)
2823 PHP_FE_END
2824 };
2825 /* }}} */
2826
2827 /* {{{ SessionUpdateTimestampHandler functions[]
2828 */
2829 static const zend_function_entry php_session_update_timestamp_iface_functions[] = {
2830 PHP_ABSTRACT_ME(SessionUpdateTimestampHandlerInterface, validateId, arginfo_session_class_validateId)
2831 PHP_ABSTRACT_ME(SessionUpdateTimestampHandlerInterface, updateTimestamp, arginfo_session_class_updateTimestamp)
2832 PHP_FE_END
2833 };
2834 /* }}} */
2835
2836 /* {{{ SessionHandler functions[]
2837 */
2838 static const zend_function_entry php_session_class_functions[] = {
2839 PHP_ME(SessionHandler, open, arginfo_session_class_open, ZEND_ACC_PUBLIC)
2840 PHP_ME(SessionHandler, close, arginfo_session_class_close, ZEND_ACC_PUBLIC)
2841 PHP_ME(SessionHandler, read, arginfo_session_class_read, ZEND_ACC_PUBLIC)
2842 PHP_ME(SessionHandler, write, arginfo_session_class_write, ZEND_ACC_PUBLIC)
2843 PHP_ME(SessionHandler, destroy, arginfo_session_class_destroy, ZEND_ACC_PUBLIC)
2844 PHP_ME(SessionHandler, gc, arginfo_session_class_gc, ZEND_ACC_PUBLIC)
2845 PHP_ME(SessionHandler, create_sid, arginfo_session_class_create_sid, ZEND_ACC_PUBLIC)
2846 PHP_FE_END
2847 };
2848 /* }}} */
2849
2850 /* ********************************
2851 * Module Setup and Destruction *
2852 ******************************** */
2853
php_rinit_session(zend_bool auto_start)2854 static int php_rinit_session(zend_bool auto_start) /* {{{ */
2855 {
2856 php_rinit_session_globals();
2857
2858 PS(mod) = NULL;
2859 {
2860 char *value;
2861
2862 value = zend_ini_string("session.save_handler", sizeof("session.save_handler") - 1, 0);
2863 if (value) {
2864 PS(mod) = _php_find_ps_module(value);
2865 }
2866 }
2867
2868 if (PS(serializer) == NULL) {
2869 char *value;
2870
2871 value = zend_ini_string("session.serialize_handler", sizeof("session.serialize_handler") - 1, 0);
2872 if (value) {
2873 PS(serializer) = _php_find_ps_serializer(value);
2874 }
2875 }
2876
2877 if (PS(mod) == NULL || PS(serializer) == NULL) {
2878 /* current status is unusable */
2879 PS(session_status) = php_session_disabled;
2880 return SUCCESS;
2881 }
2882
2883 if (auto_start) {
2884 php_session_start();
2885 }
2886
2887 return SUCCESS;
2888 } /* }}} */
2889
PHP_RINIT_FUNCTION(session)2890 static PHP_RINIT_FUNCTION(session) /* {{{ */
2891 {
2892 return php_rinit_session(PS(auto_start));
2893 }
2894 /* }}} */
2895
PHP_RSHUTDOWN_FUNCTION(session)2896 static PHP_RSHUTDOWN_FUNCTION(session) /* {{{ */
2897 {
2898 int i;
2899
2900 if (PS(session_status) == php_session_active) {
2901 zend_try {
2902 php_session_flush(1);
2903 } zend_end_try();
2904 }
2905 php_rshutdown_session_globals();
2906
2907 /* this should NOT be done in php_rshutdown_session_globals() */
2908 for (i = 0; i < PS_NUM_APIS; i++) {
2909 if (!Z_ISUNDEF(PS(mod_user_names).names[i])) {
2910 zval_ptr_dtor(&PS(mod_user_names).names[i]);
2911 ZVAL_UNDEF(&PS(mod_user_names).names[i]);
2912 }
2913 }
2914
2915 return SUCCESS;
2916 }
2917 /* }}} */
2918
PHP_GINIT_FUNCTION(ps)2919 static PHP_GINIT_FUNCTION(ps) /* {{{ */
2920 {
2921 int i;
2922
2923 #if defined(COMPILE_DL_SESSION) && defined(ZTS)
2924 ZEND_TSRMLS_CACHE_UPDATE();
2925 #endif
2926
2927 ps_globals->save_path = NULL;
2928 ps_globals->session_name = NULL;
2929 ps_globals->id = NULL;
2930 ps_globals->mod = NULL;
2931 ps_globals->serializer = NULL;
2932 ps_globals->mod_data = NULL;
2933 ps_globals->session_status = php_session_none;
2934 ps_globals->default_mod = NULL;
2935 ps_globals->mod_user_implemented = 0;
2936 ps_globals->mod_user_is_open = 0;
2937 ps_globals->session_vars = NULL;
2938 ps_globals->set_handler = 0;
2939 for (i = 0; i < PS_NUM_APIS; i++) {
2940 ZVAL_UNDEF(&ps_globals->mod_user_names.names[i]);
2941 }
2942 ZVAL_UNDEF(&ps_globals->http_session_vars);
2943 }
2944 /* }}} */
2945
PHP_MINIT_FUNCTION(session)2946 static PHP_MINIT_FUNCTION(session) /* {{{ */
2947 {
2948 zend_class_entry ce;
2949
2950 zend_register_auto_global(zend_string_init_interned("_SESSION", sizeof("_SESSION") - 1, 1), 0, NULL);
2951
2952 my_module_number = module_number;
2953 PS(module_number) = module_number;
2954
2955 PS(session_status) = php_session_none;
2956 REGISTER_INI_ENTRIES();
2957
2958 #ifdef HAVE_LIBMM
2959 PHP_MINIT(ps_mm) (INIT_FUNC_ARGS_PASSTHRU);
2960 #endif
2961 php_session_rfc1867_orig_callback = php_rfc1867_callback;
2962 php_rfc1867_callback = php_session_rfc1867_callback;
2963
2964 /* Register interfaces */
2965 INIT_CLASS_ENTRY(ce, PS_IFACE_NAME, php_session_iface_functions);
2966 php_session_iface_entry = zend_register_internal_class(&ce);
2967 php_session_iface_entry->ce_flags |= ZEND_ACC_INTERFACE;
2968
2969 INIT_CLASS_ENTRY(ce, PS_SID_IFACE_NAME, php_session_id_iface_functions);
2970 php_session_id_iface_entry = zend_register_internal_class(&ce);
2971 php_session_id_iface_entry->ce_flags |= ZEND_ACC_INTERFACE;
2972
2973 INIT_CLASS_ENTRY(ce, PS_UPDATE_TIMESTAMP_IFACE_NAME, php_session_update_timestamp_iface_functions);
2974 php_session_update_timestamp_iface_entry = zend_register_internal_class(&ce);
2975 php_session_update_timestamp_iface_entry->ce_flags |= ZEND_ACC_INTERFACE;
2976
2977 /* Register base class */
2978 INIT_CLASS_ENTRY(ce, PS_CLASS_NAME, php_session_class_functions);
2979 php_session_class_entry = zend_register_internal_class(&ce);
2980 zend_class_implements(php_session_class_entry, 1, php_session_iface_entry);
2981 zend_class_implements(php_session_class_entry, 1, php_session_id_iface_entry);
2982
2983 REGISTER_LONG_CONSTANT("PHP_SESSION_DISABLED", php_session_disabled, CONST_CS | CONST_PERSISTENT);
2984 REGISTER_LONG_CONSTANT("PHP_SESSION_NONE", php_session_none, CONST_CS | CONST_PERSISTENT);
2985 REGISTER_LONG_CONSTANT("PHP_SESSION_ACTIVE", php_session_active, CONST_CS | CONST_PERSISTENT);
2986
2987 return SUCCESS;
2988 }
2989 /* }}} */
2990
PHP_MSHUTDOWN_FUNCTION(session)2991 static PHP_MSHUTDOWN_FUNCTION(session) /* {{{ */
2992 {
2993 UNREGISTER_INI_ENTRIES();
2994
2995 #ifdef HAVE_LIBMM
2996 PHP_MSHUTDOWN(ps_mm) (SHUTDOWN_FUNC_ARGS_PASSTHRU);
2997 #endif
2998
2999 /* reset rfc1867 callbacks */
3000 php_session_rfc1867_orig_callback = NULL;
3001 if (php_rfc1867_callback == php_session_rfc1867_callback) {
3002 php_rfc1867_callback = NULL;
3003 }
3004
3005 ps_serializers[PREDEFINED_SERIALIZERS].name = NULL;
3006 memset(&ps_modules[PREDEFINED_MODULES], 0, (MAX_MODULES-PREDEFINED_MODULES)*sizeof(ps_module *));
3007
3008 return SUCCESS;
3009 }
3010 /* }}} */
3011
PHP_MINFO_FUNCTION(session)3012 static PHP_MINFO_FUNCTION(session) /* {{{ */
3013 {
3014 const ps_module **mod;
3015 ps_serializer *ser;
3016 smart_str save_handlers = {0};
3017 smart_str ser_handlers = {0};
3018 int i;
3019
3020 /* Get save handlers */
3021 for (i = 0, mod = ps_modules; i < MAX_MODULES; i++, mod++) {
3022 if (*mod && (*mod)->s_name) {
3023 smart_str_appends(&save_handlers, (*mod)->s_name);
3024 smart_str_appendc(&save_handlers, ' ');
3025 }
3026 }
3027
3028 /* Get serializer handlers */
3029 for (i = 0, ser = ps_serializers; i < MAX_SERIALIZERS; i++, ser++) {
3030 if (ser && ser->name) {
3031 smart_str_appends(&ser_handlers, ser->name);
3032 smart_str_appendc(&ser_handlers, ' ');
3033 }
3034 }
3035
3036 php_info_print_table_start();
3037 php_info_print_table_row(2, "Session Support", "enabled" );
3038
3039 if (save_handlers.s) {
3040 smart_str_0(&save_handlers);
3041 php_info_print_table_row(2, "Registered save handlers", ZSTR_VAL(save_handlers.s));
3042 smart_str_free(&save_handlers);
3043 } else {
3044 php_info_print_table_row(2, "Registered save handlers", "none");
3045 }
3046
3047 if (ser_handlers.s) {
3048 smart_str_0(&ser_handlers);
3049 php_info_print_table_row(2, "Registered serializer handlers", ZSTR_VAL(ser_handlers.s));
3050 smart_str_free(&ser_handlers);
3051 } else {
3052 php_info_print_table_row(2, "Registered serializer handlers", "none");
3053 }
3054
3055 php_info_print_table_end();
3056
3057 DISPLAY_INI_ENTRIES();
3058 }
3059 /* }}} */
3060
3061 static const zend_module_dep session_deps[] = { /* {{{ */
3062 ZEND_MOD_OPTIONAL("hash")
3063 ZEND_MOD_REQUIRED("spl")
3064 ZEND_MOD_END
3065 };
3066 /* }}} */
3067
3068 /* ************************
3069 * Upload hook handling *
3070 ************************ */
3071
early_find_sid_in(zval * dest,int where,php_session_rfc1867_progress * progress)3072 static zend_bool early_find_sid_in(zval *dest, int where, php_session_rfc1867_progress *progress) /* {{{ */
3073 {
3074 zval *ppid;
3075
3076 if (Z_ISUNDEF(PG(http_globals)[where])) {
3077 return 0;
3078 }
3079
3080 if ((ppid = zend_hash_str_find(Z_ARRVAL(PG(http_globals)[where]), PS(session_name), progress->sname_len))
3081 && Z_TYPE_P(ppid) == IS_STRING) {
3082 zval_ptr_dtor(dest);
3083 ZVAL_COPY_DEREF(dest, ppid);
3084 return 1;
3085 }
3086
3087 return 0;
3088 } /* }}} */
3089
php_session_rfc1867_early_find_sid(php_session_rfc1867_progress * progress)3090 static void php_session_rfc1867_early_find_sid(php_session_rfc1867_progress *progress) /* {{{ */
3091 {
3092
3093 if (PS(use_cookies)) {
3094 sapi_module.treat_data(PARSE_COOKIE, NULL, NULL);
3095 if (early_find_sid_in(&progress->sid, TRACK_VARS_COOKIE, progress)) {
3096 progress->apply_trans_sid = 0;
3097 return;
3098 }
3099 }
3100 if (PS(use_only_cookies)) {
3101 return;
3102 }
3103 sapi_module.treat_data(PARSE_GET, NULL, NULL);
3104 early_find_sid_in(&progress->sid, TRACK_VARS_GET, progress);
3105 } /* }}} */
3106
php_check_cancel_upload(php_session_rfc1867_progress * progress)3107 static zend_bool php_check_cancel_upload(php_session_rfc1867_progress *progress) /* {{{ */
3108 {
3109 zval *progress_ary, *cancel_upload;
3110
3111 if ((progress_ary = zend_symtable_find(Z_ARRVAL_P(Z_REFVAL(PS(http_session_vars))), progress->key.s)) == NULL) {
3112 return 0;
3113 }
3114 if (Z_TYPE_P(progress_ary) != IS_ARRAY) {
3115 return 0;
3116 }
3117 if ((cancel_upload = zend_hash_str_find(Z_ARRVAL_P(progress_ary), "cancel_upload", sizeof("cancel_upload") - 1)) == NULL) {
3118 return 0;
3119 }
3120 return Z_TYPE_P(cancel_upload) == IS_TRUE;
3121 } /* }}} */
3122
php_session_rfc1867_update(php_session_rfc1867_progress * progress,int force_update)3123 static void php_session_rfc1867_update(php_session_rfc1867_progress *progress, int force_update) /* {{{ */
3124 {
3125 if (!force_update) {
3126 if (Z_LVAL_P(progress->post_bytes_processed) < progress->next_update) {
3127 return;
3128 }
3129 #ifdef HAVE_GETTIMEOFDAY
3130 if (PS(rfc1867_min_freq) > 0.0) {
3131 struct timeval tv = {0};
3132 double dtv;
3133 gettimeofday(&tv, NULL);
3134 dtv = (double) tv.tv_sec + tv.tv_usec / 1000000.0;
3135 if (dtv < progress->next_update_time) {
3136 return;
3137 }
3138 progress->next_update_time = dtv + PS(rfc1867_min_freq);
3139 }
3140 #endif
3141 progress->next_update = Z_LVAL_P(progress->post_bytes_processed) + progress->update_step;
3142 }
3143
3144 php_session_initialize();
3145 PS(session_status) = php_session_active;
3146 IF_SESSION_VARS() {
3147 zval *sess_var = Z_REFVAL(PS(http_session_vars));
3148 SEPARATE_ARRAY(sess_var);
3149
3150 progress->cancel_upload |= php_check_cancel_upload(progress);
3151 Z_TRY_ADDREF(progress->data);
3152 zend_hash_update(Z_ARRVAL_P(sess_var), progress->key.s, &progress->data);
3153 }
3154 php_session_flush(1);
3155 } /* }}} */
3156
php_session_rfc1867_cleanup(php_session_rfc1867_progress * progress)3157 static void php_session_rfc1867_cleanup(php_session_rfc1867_progress *progress) /* {{{ */
3158 {
3159 php_session_initialize();
3160 PS(session_status) = php_session_active;
3161 IF_SESSION_VARS() {
3162 zval *sess_var = Z_REFVAL(PS(http_session_vars));
3163 SEPARATE_ARRAY(sess_var);
3164 zend_hash_del(Z_ARRVAL_P(sess_var), progress->key.s);
3165 }
3166 php_session_flush(1);
3167 } /* }}} */
3168
php_session_rfc1867_callback(unsigned int event,void * event_data,void ** extra)3169 static int php_session_rfc1867_callback(unsigned int event, void *event_data, void **extra) /* {{{ */
3170 {
3171 php_session_rfc1867_progress *progress;
3172 int retval = SUCCESS;
3173
3174 if (php_session_rfc1867_orig_callback) {
3175 retval = php_session_rfc1867_orig_callback(event, event_data, extra);
3176 }
3177 if (!PS(rfc1867_enabled)) {
3178 return retval;
3179 }
3180
3181 progress = PS(rfc1867_progress);
3182
3183 switch(event) {
3184 case MULTIPART_EVENT_START: {
3185 multipart_event_start *data = (multipart_event_start *) event_data;
3186 progress = ecalloc(1, sizeof(php_session_rfc1867_progress));
3187 progress->content_length = data->content_length;
3188 progress->sname_len = strlen(PS(session_name));
3189 PS(rfc1867_progress) = progress;
3190 }
3191 break;
3192 case MULTIPART_EVENT_FORMDATA: {
3193 multipart_event_formdata *data = (multipart_event_formdata *) event_data;
3194 size_t value_len;
3195
3196 if (Z_TYPE(progress->sid) && progress->key.s) {
3197 break;
3198 }
3199
3200 /* orig callback may have modified *data->newlength */
3201 if (data->newlength) {
3202 value_len = *data->newlength;
3203 } else {
3204 value_len = data->length;
3205 }
3206
3207 if (data->name && data->value && value_len) {
3208 size_t name_len = strlen(data->name);
3209
3210 if (name_len == progress->sname_len && memcmp(data->name, PS(session_name), name_len) == 0) {
3211 zval_ptr_dtor(&progress->sid);
3212 ZVAL_STRINGL(&progress->sid, (*data->value), value_len);
3213 } else if (name_len == strlen(PS(rfc1867_name)) && memcmp(data->name, PS(rfc1867_name), name_len + 1) == 0) {
3214 smart_str_free(&progress->key);
3215 smart_str_appends(&progress->key, PS(rfc1867_prefix));
3216 smart_str_appendl(&progress->key, *data->value, value_len);
3217 smart_str_0(&progress->key);
3218
3219 progress->apply_trans_sid = APPLY_TRANS_SID;
3220 php_session_rfc1867_early_find_sid(progress);
3221 }
3222 }
3223 }
3224 break;
3225 case MULTIPART_EVENT_FILE_START: {
3226 multipart_event_file_start *data = (multipart_event_file_start *) event_data;
3227
3228 /* Do nothing when $_POST["PHP_SESSION_UPLOAD_PROGRESS"] is not set
3229 * or when we have no session id */
3230 if (!Z_TYPE(progress->sid) || !progress->key.s) {
3231 break;
3232 }
3233
3234 /* First FILE_START event, initializing data */
3235 if (Z_ISUNDEF(progress->data)) {
3236
3237 if (PS(rfc1867_freq) >= 0) {
3238 progress->update_step = PS(rfc1867_freq);
3239 } else if (PS(rfc1867_freq) < 0) { /* % of total size */
3240 progress->update_step = progress->content_length * -PS(rfc1867_freq) / 100;
3241 }
3242 progress->next_update = 0;
3243 progress->next_update_time = 0.0;
3244
3245 array_init(&progress->data);
3246 array_init(&progress->files);
3247
3248 add_assoc_long_ex(&progress->data, "start_time", sizeof("start_time") - 1, (zend_long)sapi_get_request_time());
3249 add_assoc_long_ex(&progress->data, "content_length", sizeof("content_length") - 1, progress->content_length);
3250 add_assoc_long_ex(&progress->data, "bytes_processed", sizeof("bytes_processed") - 1, data->post_bytes_processed);
3251 add_assoc_bool_ex(&progress->data, "done", sizeof("done") - 1, 0);
3252 add_assoc_zval_ex(&progress->data, "files", sizeof("files") - 1, &progress->files);
3253
3254 progress->post_bytes_processed = zend_hash_str_find(Z_ARRVAL(progress->data), "bytes_processed", sizeof("bytes_processed") - 1);
3255
3256 php_rinit_session(0);
3257 PS(id) = zend_string_init(Z_STRVAL(progress->sid), Z_STRLEN(progress->sid), 0);
3258 if (progress->apply_trans_sid) {
3259 /* Enable trans sid by modifying flags */
3260 PS(use_trans_sid) = 1;
3261 PS(use_only_cookies) = 0;
3262 }
3263 PS(send_cookie) = 0;
3264 }
3265
3266 array_init(&progress->current_file);
3267
3268 /* Each uploaded file has its own array. Trying to make it close to $_FILES entries. */
3269 add_assoc_string_ex(&progress->current_file, "field_name", sizeof("field_name") - 1, data->name);
3270 add_assoc_string_ex(&progress->current_file, "name", sizeof("name") - 1, *data->filename);
3271 add_assoc_null_ex(&progress->current_file, "tmp_name", sizeof("tmp_name") - 1);
3272 add_assoc_long_ex(&progress->current_file, "error", sizeof("error") - 1, 0);
3273
3274 add_assoc_bool_ex(&progress->current_file, "done", sizeof("done") - 1, 0);
3275 add_assoc_long_ex(&progress->current_file, "start_time", sizeof("start_time") - 1, (zend_long)time(NULL));
3276 add_assoc_long_ex(&progress->current_file, "bytes_processed", sizeof("bytes_processed") - 1, 0);
3277
3278 add_next_index_zval(&progress->files, &progress->current_file);
3279
3280 progress->current_file_bytes_processed = zend_hash_str_find(Z_ARRVAL(progress->current_file), "bytes_processed", sizeof("bytes_processed") - 1);
3281
3282 Z_LVAL_P(progress->current_file_bytes_processed) = data->post_bytes_processed;
3283 php_session_rfc1867_update(progress, 0);
3284 }
3285 break;
3286 case MULTIPART_EVENT_FILE_DATA: {
3287 multipart_event_file_data *data = (multipart_event_file_data *) event_data;
3288
3289 if (!Z_TYPE(progress->sid) || !progress->key.s) {
3290 break;
3291 }
3292
3293 Z_LVAL_P(progress->current_file_bytes_processed) = data->offset + data->length;
3294 Z_LVAL_P(progress->post_bytes_processed) = data->post_bytes_processed;
3295
3296 php_session_rfc1867_update(progress, 0);
3297 }
3298 break;
3299 case MULTIPART_EVENT_FILE_END: {
3300 multipart_event_file_end *data = (multipart_event_file_end *) event_data;
3301
3302 if (!Z_TYPE(progress->sid) || !progress->key.s) {
3303 break;
3304 }
3305
3306 if (data->temp_filename) {
3307 add_assoc_string_ex(&progress->current_file, "tmp_name", sizeof("tmp_name") - 1, data->temp_filename);
3308 }
3309
3310 add_assoc_long_ex(&progress->current_file, "error", sizeof("error") - 1, data->cancel_upload);
3311 add_assoc_bool_ex(&progress->current_file, "done", sizeof("done") - 1, 1);
3312
3313 Z_LVAL_P(progress->post_bytes_processed) = data->post_bytes_processed;
3314
3315 php_session_rfc1867_update(progress, 0);
3316 }
3317 break;
3318 case MULTIPART_EVENT_END: {
3319 multipart_event_end *data = (multipart_event_end *) event_data;
3320
3321 if (Z_TYPE(progress->sid) && progress->key.s) {
3322 if (PS(rfc1867_cleanup)) {
3323 php_session_rfc1867_cleanup(progress);
3324 } else {
3325 if (!Z_ISUNDEF(progress->data)) {
3326 SEPARATE_ARRAY(&progress->data);
3327 add_assoc_bool_ex(&progress->data, "done", sizeof("done") - 1, 1);
3328 Z_LVAL_P(progress->post_bytes_processed) = data->post_bytes_processed;
3329 php_session_rfc1867_update(progress, 1);
3330 }
3331 }
3332 php_rshutdown_session_globals();
3333 }
3334
3335 if (!Z_ISUNDEF(progress->data)) {
3336 zval_ptr_dtor(&progress->data);
3337 }
3338 zval_ptr_dtor(&progress->sid);
3339 smart_str_free(&progress->key);
3340 efree(progress);
3341 progress = NULL;
3342 PS(rfc1867_progress) = NULL;
3343 }
3344 break;
3345 }
3346
3347 if (progress && progress->cancel_upload) {
3348 return FAILURE;
3349 }
3350 return retval;
3351
3352 } /* }}} */
3353
3354 zend_module_entry session_module_entry = {
3355 STANDARD_MODULE_HEADER_EX,
3356 NULL,
3357 session_deps,
3358 "session",
3359 session_functions,
3360 PHP_MINIT(session), PHP_MSHUTDOWN(session),
3361 PHP_RINIT(session), PHP_RSHUTDOWN(session),
3362 PHP_MINFO(session),
3363 PHP_SESSION_VERSION,
3364 PHP_MODULE_GLOBALS(ps),
3365 PHP_GINIT(ps),
3366 NULL,
3367 NULL,
3368 STANDARD_MODULE_PROPERTIES_EX
3369 };
3370
3371 #ifdef COMPILE_DL_SESSION
3372 #ifdef ZTS
3373 ZEND_TSRMLS_CACHE_DEFINE()
3374 #endif
3375 ZEND_GET_MODULE(session)
3376 #endif
3377
