1 /*
2 +----------------------------------------------------------------------+
3 | Copyright (c) The PHP Group |
4 +----------------------------------------------------------------------+
5 | This source file is subject to version 3.01 of the PHP license, |
6 | that is bundled with this package in the file LICENSE, and is |
7 | available through the world-wide-web at the following url: |
8 | http://www.php.net/license/3_01.txt |
9 | If you did not receive a copy of the PHP license and are unable to |
10 | obtain it through the world-wide-web, please send a note to |
11 | license@php.net so we can mail you a copy immediately. |
12 +----------------------------------------------------------------------+
13 | Authors: Sascha Schumann <sascha@schumann.cx> |
14 | Andrei Zmievski <andrei@php.net> |
15 +----------------------------------------------------------------------+
16 */
17
18 #ifdef HAVE_CONFIG_H
19 #include "config.h"
20 #endif
21
22 #include "php.h"
23
24 #ifdef PHP_WIN32
25 # include "win32/winutil.h"
26 # include "win32/time.h"
27 #else
28 # include <sys/time.h>
29 #endif
30
31 #include <sys/stat.h>
32 #include <fcntl.h>
33
34 #include "php_ini.h"
35 #include "SAPI.h"
36 #include "rfc1867.h"
37 #include "php_variables.h"
38 #include "php_session.h"
39 #include "session_arginfo.h"
40 #include "ext/standard/php_random.h"
41 #include "ext/standard/php_var.h"
42 #include "ext/date/php_date.h"
43 #include "ext/standard/php_lcg.h"
44 #include "ext/standard/url_scanner_ex.h"
45 #include "ext/standard/info.h"
46 #include "zend_smart_str.h"
47 #include "ext/standard/url.h"
48 #include "ext/standard/basic_functions.h"
49 #include "ext/standard/head.h"
50
51 #include "mod_files.h"
52 #include "mod_user.h"
53
54 #ifdef HAVE_LIBMM
55 #include "mod_mm.h"
56 #endif
57
58 PHPAPI ZEND_DECLARE_MODULE_GLOBALS(ps)
59
60 static int php_session_rfc1867_callback(unsigned int event, void *event_data, void **extra);
61 static int (*php_session_rfc1867_orig_callback)(unsigned int event, void *event_data, void **extra);
62 static void php_session_track_init(void);
63
64 /* SessionHandler class */
65 zend_class_entry *php_session_class_entry;
66
67 /* SessionHandlerInterface */
68 zend_class_entry *php_session_iface_entry;
69
70 /* SessionIdInterface */
71 zend_class_entry *php_session_id_iface_entry;
72
73 /* SessionUpdateTimestampInterface */
74 zend_class_entry *php_session_update_timestamp_iface_entry;
75
76 #define PS_MAX_SID_LENGTH 256
77
78 /* ***********
79 * Helpers *
80 *********** */
81
82 #define IF_SESSION_VARS() \
83 if (Z_ISREF_P(&PS(http_session_vars)) && Z_TYPE_P(Z_REFVAL(PS(http_session_vars))) == IS_ARRAY)
84
85 #define SESSION_CHECK_ACTIVE_STATE \
86 if (PS(session_status) == php_session_active) { \
87 php_error_docref(NULL, E_WARNING, "Session ini settings cannot be changed when a session is active"); \
88 return FAILURE; \
89 }
90
91 #define SESSION_CHECK_OUTPUT_STATE \
92 if (SG(headers_sent) && stage != ZEND_INI_STAGE_DEACTIVATE) { \
93 php_error_docref(NULL, E_WARNING, "Session ini settings cannot be changed after headers have already been sent"); \
94 return FAILURE; \
95 }
96
97 #define APPLY_TRANS_SID (PS(use_trans_sid) && !PS(use_only_cookies))
98
99 static int php_session_send_cookie(void);
100 static int php_session_abort(void);
101
102 /* Initialized in MINIT, readonly otherwise. */
103 static int my_module_number = 0;
104
105 /* Dispatched by RINIT and by php_session_destroy */
php_rinit_session_globals(void)106 static inline void php_rinit_session_globals(void) /* {{{ */
107 {
108 /* Do NOT init PS(mod_user_names) here! */
109 /* TODO: These could be moved to MINIT and removed. These should be initialized by php_rshutdown_session_globals() always when execution is finished. */
110 PS(id) = NULL;
111 PS(session_status) = php_session_none;
112 PS(in_save_handler) = 0;
113 PS(set_handler) = 0;
114 PS(mod_data) = NULL;
115 PS(mod_user_is_open) = 0;
116 PS(define_sid) = 1;
117 PS(session_vars) = NULL;
118 PS(module_number) = my_module_number;
119 ZVAL_UNDEF(&PS(http_session_vars));
120 }
121 /* }}} */
122
123 /* Dispatched by RSHUTDOWN and by php_session_destroy */
php_rshutdown_session_globals(void)124 static inline void php_rshutdown_session_globals(void) /* {{{ */
125 {
126 /* Do NOT destroy PS(mod_user_names) here! */
127 if (!Z_ISUNDEF(PS(http_session_vars))) {
128 zval_ptr_dtor(&PS(http_session_vars));
129 ZVAL_UNDEF(&PS(http_session_vars));
130 }
131 if (PS(mod_data) || PS(mod_user_implemented)) {
132 zend_try {
133 PS(mod)->s_close(&PS(mod_data));
134 } zend_end_try();
135 }
136 if (PS(id)) {
137 zend_string_release_ex(PS(id), 0);
138 PS(id) = NULL;
139 }
140
141 if (PS(session_vars)) {
142 zend_string_release_ex(PS(session_vars), 0);
143 PS(session_vars) = NULL;
144 }
145
146 /* User save handlers may end up directly here by misuse, bugs in user script, etc. */
147 /* Set session status to prevent error while restoring save handler INI value. */
148 PS(session_status) = php_session_none;
149 }
150 /* }}} */
151
php_session_destroy(void)152 PHPAPI int php_session_destroy(void) /* {{{ */
153 {
154 int retval = SUCCESS;
155
156 if (PS(session_status) != php_session_active) {
157 php_error_docref(NULL, E_WARNING, "Trying to destroy uninitialized session");
158 return FAILURE;
159 }
160
161 if (PS(id) && PS(mod)->s_destroy(&PS(mod_data), PS(id)) == FAILURE) {
162 retval = FAILURE;
163 if (!EG(exception)) {
164 php_error_docref(NULL, E_WARNING, "Session object destruction failed");
165 }
166 }
167
168 php_rshutdown_session_globals();
169 php_rinit_session_globals();
170
171 return retval;
172 }
173 /* }}} */
174
php_add_session_var(zend_string * name)175 PHPAPI void php_add_session_var(zend_string *name) /* {{{ */
176 {
177 IF_SESSION_VARS() {
178 zval *sess_var = Z_REFVAL(PS(http_session_vars));
179 SEPARATE_ARRAY(sess_var);
180 if (!zend_hash_exists(Z_ARRVAL_P(sess_var), name)) {
181 zval empty_var;
182 ZVAL_NULL(&empty_var);
183 zend_hash_update(Z_ARRVAL_P(sess_var), name, &empty_var);
184 }
185 }
186 }
187 /* }}} */
188
php_set_session_var(zend_string * name,zval * state_val,php_unserialize_data_t * var_hash)189 PHPAPI zval* php_set_session_var(zend_string *name, zval *state_val, php_unserialize_data_t *var_hash) /* {{{ */
190 {
191 IF_SESSION_VARS() {
192 zval *sess_var = Z_REFVAL(PS(http_session_vars));
193 SEPARATE_ARRAY(sess_var);
194 return zend_hash_update(Z_ARRVAL_P(sess_var), name, state_val);
195 }
196 return NULL;
197 }
198 /* }}} */
199
php_get_session_var(zend_string * name)200 PHPAPI zval* php_get_session_var(zend_string *name) /* {{{ */
201 {
202 IF_SESSION_VARS() {
203 return zend_hash_find(Z_ARRVAL_P(Z_REFVAL(PS(http_session_vars))), name);
204 }
205 return NULL;
206 }
207 /* }}} */
208
php_session_track_init(void)209 static void php_session_track_init(void) /* {{{ */
210 {
211 zval session_vars;
212 zend_string *var_name = zend_string_init("_SESSION", sizeof("_SESSION") - 1, 0);
213 /* Unconditionally destroy existing array -- possible dirty data */
214 zend_delete_global_variable(var_name);
215
216 if (!Z_ISUNDEF(PS(http_session_vars))) {
217 zval_ptr_dtor(&PS(http_session_vars));
218 }
219
220 array_init(&session_vars);
221 ZVAL_NEW_REF(&PS(http_session_vars), &session_vars);
222 Z_ADDREF_P(&PS(http_session_vars));
223 zend_hash_update_ind(&EG(symbol_table), var_name, &PS(http_session_vars));
224 zend_string_release_ex(var_name, 0);
225 }
226 /* }}} */
227
php_session_encode(void)228 static zend_string *php_session_encode(void) /* {{{ */
229 {
230 IF_SESSION_VARS() {
231 if (!PS(serializer)) {
232 php_error_docref(NULL, E_WARNING, "Unknown session.serialize_handler. Failed to encode session object");
233 return NULL;
234 }
235 return PS(serializer)->encode();
236 } else {
237 php_error_docref(NULL, E_WARNING, "Cannot encode non-existent session");
238 }
239 return NULL;
240 }
241 /* }}} */
242
php_session_decode(zend_string * data)243 static int php_session_decode(zend_string *data) /* {{{ */
244 {
245 if (!PS(serializer)) {
246 php_error_docref(NULL, E_WARNING, "Unknown session.serialize_handler. Failed to decode session object");
247 return FAILURE;
248 }
249 if (PS(serializer)->decode(ZSTR_VAL(data), ZSTR_LEN(data)) == FAILURE) {
250 php_session_destroy();
251 php_session_track_init();
252 php_error_docref(NULL, E_WARNING, "Failed to decode session object. Session has been destroyed");
253 return FAILURE;
254 }
255 return SUCCESS;
256 }
257 /* }}} */
258
259 /*
260 * Note that we cannot use the BASE64 alphabet here, because
261 * it contains "/" and "+": both are unacceptable for simple inclusion
262 * into URLs.
263 */
264
265 static const char hexconvtab[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ,-";
266
bin_to_readable(unsigned char * in,size_t inlen,char * out,size_t outlen,char nbits)267 static void bin_to_readable(unsigned char *in, size_t inlen, char *out, size_t outlen, char nbits) /* {{{ */
268 {
269 unsigned char *p, *q;
270 unsigned short w;
271 int mask;
272 int have;
273
274 p = (unsigned char *)in;
275 q = (unsigned char *)in + inlen;
276
277 w = 0;
278 have = 0;
279 mask = (1 << nbits) - 1;
280
281 while (outlen--) {
282 if (have < nbits) {
283 if (p < q) {
284 w |= *p++ << have;
285 have += 8;
286 } else {
287 /* Should never happen. Input must be large enough. */
288 ZEND_UNREACHABLE();
289 break;
290 }
291 }
292
293 /* consume nbits */
294 *out++ = hexconvtab[w & mask];
295 w >>= nbits;
296 have -= nbits;
297 }
298
299 *out = '\0';
300 }
301 /* }}} */
302
303 #define PS_EXTRA_RAND_BYTES 60
304
php_session_create_id(PS_CREATE_SID_ARGS)305 PHPAPI zend_string *php_session_create_id(PS_CREATE_SID_ARGS) /* {{{ */
306 {
307 unsigned char rbuf[PS_MAX_SID_LENGTH + PS_EXTRA_RAND_BYTES];
308 zend_string *outid;
309
310 /* It would be enough to read ceil(sid_length * sid_bits_per_character / 8) bytes here.
311 * We read sid_length bytes instead for simplicity. */
312 /* Read additional PS_EXTRA_RAND_BYTES just in case CSPRNG is not safe enough */
313 if (php_random_bytes_throw(rbuf, PS(sid_length) + PS_EXTRA_RAND_BYTES) == FAILURE) {
314 return NULL;
315 }
316
317 outid = zend_string_alloc(PS(sid_length), 0);
318 bin_to_readable(
319 rbuf, PS(sid_length),
320 ZSTR_VAL(outid), ZSTR_LEN(outid),
321 (char)PS(sid_bits_per_character));
322
323 return outid;
324 }
325 /* }}} */
326
327 /* Default session id char validation function allowed by ps_modules.
328 * If you change the logic here, please also update the error message in
329 * ps_modules appropriately */
php_session_valid_key(const char * key)330 PHPAPI int php_session_valid_key(const char *key) /* {{{ */
331 {
332 size_t len;
333 const char *p;
334 char c;
335 int ret = SUCCESS;
336
337 for (p = key; (c = *p); p++) {
338 /* valid characters are a..z,A..Z,0..9 */
339 if (!((c >= 'a' && c <= 'z')
340 || (c >= 'A' && c <= 'Z')
341 || (c >= '0' && c <= '9')
342 || c == ','
343 || c == '-')) {
344 ret = FAILURE;
345 break;
346 }
347 }
348
349 len = p - key;
350
351 /* Somewhat arbitrary length limit here, but should be way more than
352 anyone needs and avoids file-level warnings later on if we exceed MAX_PATH */
353 if (len == 0 || len > PS_MAX_SID_LENGTH) {
354 ret = FAILURE;
355 }
356
357 return ret;
358 }
359 /* }}} */
360
361
php_session_gc(zend_bool immediate)362 static zend_long php_session_gc(zend_bool immediate) /* {{{ */
363 {
364 int nrand;
365 zend_long num = -1;
366
367 /* GC must be done before reading session data. */
368 if ((PS(mod_data) || PS(mod_user_implemented))) {
369 if (immediate) {
370 PS(mod)->s_gc(&PS(mod_data), PS(gc_maxlifetime), &num);
371 return num;
372 }
373 nrand = (zend_long) ((float) PS(gc_divisor) * php_combined_lcg());
374 if (PS(gc_probability) > 0 && nrand < PS(gc_probability)) {
375 PS(mod)->s_gc(&PS(mod_data), PS(gc_maxlifetime), &num);
376 }
377 }
378 return num;
379 } /* }}} */
380
php_session_initialize(void)381 static int php_session_initialize(void) /* {{{ */
382 {
383 zend_string *val = NULL;
384
385 PS(session_status) = php_session_active;
386
387 if (!PS(mod)) {
388 PS(session_status) = php_session_disabled;
389 php_error_docref(NULL, E_WARNING, "No storage module chosen - failed to initialize session");
390 return FAILURE;
391 }
392
393 /* Open session handler first */
394 if (PS(mod)->s_open(&PS(mod_data), PS(save_path), PS(session_name)) == FAILURE
395 /* || PS(mod_data) == NULL */ /* FIXME: open must set valid PS(mod_data) with success */
396 ) {
397 php_session_abort();
398 if (!EG(exception)) {
399 php_error_docref(NULL, E_WARNING, "Failed to initialize storage module: %s (path: %s)", PS(mod)->s_name, PS(save_path));
400 }
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 if (!EG(exception)) {
413 zend_throw_error(NULL, "Failed to create session ID: %s (path: %s)", PS(mod)->s_name, PS(save_path));
414 }
415 return FAILURE;
416 }
417 if (PS(use_cookies)) {
418 PS(send_cookie) = 1;
419 }
420 } else if (PS(use_strict_mode) && PS(mod)->s_validate_sid &&
421 PS(mod)->s_validate_sid(&PS(mod_data), PS(id)) == FAILURE
422 ) {
423 if (PS(id)) {
424 zend_string_release_ex(PS(id), 0);
425 }
426 PS(id) = PS(mod)->s_create_sid(&PS(mod_data));
427 if (!PS(id)) {
428 PS(id) = php_session_create_id(NULL);
429 }
430 if (PS(use_cookies)) {
431 PS(send_cookie) = 1;
432 }
433 }
434
435 if (php_session_reset_id() == FAILURE) {
436 php_session_abort();
437 return FAILURE;
438 }
439
440 /* Read data */
441 php_session_track_init();
442 if (PS(mod)->s_read(&PS(mod_data), PS(id), &val, PS(gc_maxlifetime)) == FAILURE) {
443 php_session_abort();
444 /* FYI: Some broken save handlers return FAILURE for non-existent session ID, this is incorrect */
445 if (!EG(exception)) {
446 php_error_docref(NULL, E_WARNING, "Failed to read session data: %s (path: %s)", PS(mod)->s_name, PS(save_path));
447 }
448 return FAILURE;
449 }
450
451 /* GC must be done after read */
452 php_session_gc(0);
453
454 if (PS(session_vars)) {
455 zend_string_release_ex(PS(session_vars), 0);
456 PS(session_vars) = NULL;
457 }
458 if (val) {
459 if (PS(lazy_write)) {
460 PS(session_vars) = zend_string_copy(val);
461 }
462 php_session_decode(val);
463 zend_string_release_ex(val, 0);
464 }
465 return SUCCESS;
466 }
467 /* }}} */
468
php_session_save_current_state(int write)469 static void php_session_save_current_state(int write) /* {{{ */
470 {
471 int ret = FAILURE;
472
473 if (write) {
474 IF_SESSION_VARS() {
475 if (PS(mod_data) || PS(mod_user_implemented)) {
476 zend_string *val;
477
478 val = php_session_encode();
479 if (val) {
480 if (PS(lazy_write) && PS(session_vars)
481 && PS(mod)->s_update_timestamp
482 && PS(mod)->s_update_timestamp != php_session_update_timestamp
483 && zend_string_equals(val, PS(session_vars))
484 ) {
485 ret = PS(mod)->s_update_timestamp(&PS(mod_data), PS(id), val, PS(gc_maxlifetime));
486 } else {
487 ret = PS(mod)->s_write(&PS(mod_data), PS(id), val, PS(gc_maxlifetime));
488 }
489 zend_string_release_ex(val, 0);
490 } else {
491 ret = PS(mod)->s_write(&PS(mod_data), PS(id), ZSTR_EMPTY_ALLOC(), PS(gc_maxlifetime));
492 }
493 }
494
495 if ((ret == FAILURE) && !EG(exception)) {
496 if (!PS(mod_user_implemented)) {
497 php_error_docref(NULL, E_WARNING, "Failed to write session data (%s). Please "
498 "verify that the current setting of session.save_path "
499 "is correct (%s)",
500 PS(mod)->s_name,
501 PS(save_path));
502 } else {
503 php_error_docref(NULL, E_WARNING, "Failed to write session data using user "
504 "defined save handler. (session.save_path: %s)", PS(save_path));
505 }
506 }
507 }
508 }
509
510 if (PS(mod_data) || PS(mod_user_implemented)) {
511 PS(mod)->s_close(&PS(mod_data));
512 }
513 }
514 /* }}} */
515
php_session_normalize_vars()516 static void php_session_normalize_vars() /* {{{ */
517 {
518 PS_ENCODE_VARS;
519
520 IF_SESSION_VARS() {
521 PS_ENCODE_LOOP(
522 if (Z_TYPE_P(struc) == IS_PTR) {
523 zval *zv = (zval *)Z_PTR_P(struc);
524 ZVAL_COPY_VALUE(struc, zv);
525 ZVAL_UNDEF(zv);
526 }
527 );
528 }
529 }
530 /* }}} */
531
532 /* *************************
533 * INI Settings/Handlers *
534 ************************* */
535
PHP_INI_MH(OnUpdateSaveHandler)536 static PHP_INI_MH(OnUpdateSaveHandler) /* {{{ */
537 {
538 const ps_module *tmp;
539 int err_type = E_ERROR;
540
541 SESSION_CHECK_ACTIVE_STATE;
542 SESSION_CHECK_OUTPUT_STATE;
543
544 tmp = _php_find_ps_module(ZSTR_VAL(new_value));
545
546 if (stage == ZEND_INI_STAGE_RUNTIME) {
547 err_type = E_WARNING;
548 }
549
550 if (PG(modules_activated) && !tmp) {
551 /* Do not output error when restoring ini options. */
552 if (stage != ZEND_INI_STAGE_DEACTIVATE) {
553 php_error_docref(NULL, err_type, "Session save handler \"%s\" cannot be found", ZSTR_VAL(new_value));
554 }
555
556 return FAILURE;
557 }
558
559 /* "user" save handler should not be set by user */
560 if (!PS(set_handler) && tmp == ps_user_ptr) {
561 php_error_docref(NULL, err_type, "Session save handler \"user\" cannot be set by ini_set()");
562 return FAILURE;
563 }
564
565 PS(default_mod) = PS(mod);
566 PS(mod) = tmp;
567
568 return SUCCESS;
569 }
570 /* }}} */
571
PHP_INI_MH(OnUpdateSerializer)572 static PHP_INI_MH(OnUpdateSerializer) /* {{{ */
573 {
574 const ps_serializer *tmp;
575
576 SESSION_CHECK_ACTIVE_STATE;
577 SESSION_CHECK_OUTPUT_STATE;
578
579 tmp = _php_find_ps_serializer(ZSTR_VAL(new_value));
580
581 if (PG(modules_activated) && !tmp) {
582 int err_type;
583
584 if (stage == ZEND_INI_STAGE_RUNTIME) {
585 err_type = E_WARNING;
586 } else {
587 err_type = E_ERROR;
588 }
589
590 /* Do not output error when restoring ini options. */
591 if (stage != ZEND_INI_STAGE_DEACTIVATE) {
592 php_error_docref(NULL, err_type, "Serialization handler \"%s\" cannot be found", ZSTR_VAL(new_value));
593 }
594 return FAILURE;
595 }
596 PS(serializer) = tmp;
597
598 return SUCCESS;
599 }
600 /* }}} */
601
PHP_INI_MH(OnUpdateTransSid)602 static PHP_INI_MH(OnUpdateTransSid) /* {{{ */
603 {
604 SESSION_CHECK_ACTIVE_STATE;
605 SESSION_CHECK_OUTPUT_STATE;
606
607 if (!strncasecmp(ZSTR_VAL(new_value), "on", sizeof("on"))) {
608 PS(use_trans_sid) = (zend_bool) 1;
609 } else {
610 PS(use_trans_sid) = (zend_bool) atoi(ZSTR_VAL(new_value));
611 }
612
613 return SUCCESS;
614 }
615 /* }}} */
616
617
PHP_INI_MH(OnUpdateSaveDir)618 static PHP_INI_MH(OnUpdateSaveDir) /* {{{ */
619 {
620 SESSION_CHECK_ACTIVE_STATE;
621 SESSION_CHECK_OUTPUT_STATE;
622
623 /* Only do the safemode/open_basedir check at runtime */
624 if (stage == PHP_INI_STAGE_RUNTIME || stage == PHP_INI_STAGE_HTACCESS) {
625 char *p;
626
627 if (memchr(ZSTR_VAL(new_value), '\0', ZSTR_LEN(new_value)) != NULL) {
628 return FAILURE;
629 }
630
631 /* we do not use zend_memrchr() since path can contain ; itself */
632 if ((p = strchr(ZSTR_VAL(new_value), ';'))) {
633 char *p2;
634 p++;
635 if ((p2 = strchr(p, ';'))) {
636 p = p2 + 1;
637 }
638 } else {
639 p = ZSTR_VAL(new_value);
640 }
641
642 if (PG(open_basedir) && *p && php_check_open_basedir(p)) {
643 return FAILURE;
644 }
645 }
646
647 return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
648 }
649 /* }}} */
650
651
PHP_INI_MH(OnUpdateName)652 static PHP_INI_MH(OnUpdateName) /* {{{ */
653 {
654 SESSION_CHECK_ACTIVE_STATE;
655 SESSION_CHECK_OUTPUT_STATE;
656
657 /* Numeric session.name won't work at all */
658 if ((!ZSTR_LEN(new_value) || is_numeric_string(ZSTR_VAL(new_value), ZSTR_LEN(new_value), NULL, NULL, 0))) {
659 int err_type;
660
661 if (stage == ZEND_INI_STAGE_RUNTIME || stage == ZEND_INI_STAGE_ACTIVATE || stage == ZEND_INI_STAGE_STARTUP) {
662 err_type = E_WARNING;
663 } else {
664 err_type = E_ERROR;
665 }
666
667 /* Do not output error when restoring ini options. */
668 if (stage != ZEND_INI_STAGE_DEACTIVATE) {
669 php_error_docref(NULL, err_type, "session.name \"%s\" cannot be numeric or empty", ZSTR_VAL(new_value));
670 }
671 return FAILURE;
672 }
673
674 return OnUpdateStringUnempty(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
675 }
676 /* }}} */
677
678
PHP_INI_MH(OnUpdateCookieLifetime)679 static PHP_INI_MH(OnUpdateCookieLifetime) /* {{{ */
680 {
681 SESSION_CHECK_ACTIVE_STATE;
682 SESSION_CHECK_OUTPUT_STATE;
683 if (atol(ZSTR_VAL(new_value)) < 0) {
684 php_error_docref(NULL, E_WARNING, "CookieLifetime cannot be negative");
685 return FAILURE;
686 }
687 return OnUpdateLongGEZero(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
688 }
689 /* }}} */
690
691
PHP_INI_MH(OnUpdateSessionLong)692 static PHP_INI_MH(OnUpdateSessionLong) /* {{{ */
693 {
694 SESSION_CHECK_ACTIVE_STATE;
695 SESSION_CHECK_OUTPUT_STATE;
696 return OnUpdateLong(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
697 }
698 /* }}} */
699
700
PHP_INI_MH(OnUpdateSessionString)701 static PHP_INI_MH(OnUpdateSessionString) /* {{{ */
702 {
703 SESSION_CHECK_ACTIVE_STATE;
704 SESSION_CHECK_OUTPUT_STATE;
705 return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
706 }
707 /* }}} */
708
709
PHP_INI_MH(OnUpdateSessionBool)710 static PHP_INI_MH(OnUpdateSessionBool) /* {{{ */
711 {
712 SESSION_CHECK_OUTPUT_STATE;
713 SESSION_CHECK_ACTIVE_STATE;
714 return OnUpdateBool(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
715 }
716 /* }}} */
717
718
PHP_INI_MH(OnUpdateSidLength)719 static PHP_INI_MH(OnUpdateSidLength) /* {{{ */
720 {
721 zend_long val;
722 char *endptr = NULL;
723
724 SESSION_CHECK_OUTPUT_STATE;
725 SESSION_CHECK_ACTIVE_STATE;
726 val = ZEND_STRTOL(ZSTR_VAL(new_value), &endptr, 10);
727 if (endptr && (*endptr == '\0')
728 && val >= 22 && val <= PS_MAX_SID_LENGTH) {
729 /* Numeric value */
730 PS(sid_length) = val;
731 return SUCCESS;
732 }
733
734 php_error_docref(NULL, E_WARNING, "session.configuration \"session.sid_length\" must be between 22 and 256");
735 return FAILURE;
736 }
737 /* }}} */
738
PHP_INI_MH(OnUpdateSidBits)739 static PHP_INI_MH(OnUpdateSidBits) /* {{{ */
740 {
741 zend_long val;
742 char *endptr = NULL;
743
744 SESSION_CHECK_OUTPUT_STATE;
745 SESSION_CHECK_ACTIVE_STATE;
746 val = ZEND_STRTOL(ZSTR_VAL(new_value), &endptr, 10);
747 if (endptr && (*endptr == '\0')
748 && val >= 4 && val <=6) {
749 /* Numeric value */
750 PS(sid_bits_per_character) = val;
751 return SUCCESS;
752 }
753
754 php_error_docref(NULL, E_WARNING, "session.configuration \"session.sid_bits_per_character\" must be between 4 and 6");
755 return FAILURE;
756 }
757 /* }}} */
758
759
PHP_INI_MH(OnUpdateLazyWrite)760 static PHP_INI_MH(OnUpdateLazyWrite) /* {{{ */
761 {
762 SESSION_CHECK_ACTIVE_STATE;
763 SESSION_CHECK_OUTPUT_STATE;
764 return OnUpdateBool(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
765 }
766 /* }}} */
767
768
769
PHP_INI_MH(OnUpdateRfc1867Freq)770 static PHP_INI_MH(OnUpdateRfc1867Freq) /* {{{ */
771 {
772 int tmp;
773 tmp = zend_atoi(ZSTR_VAL(new_value), ZSTR_LEN(new_value));
774 if(tmp < 0) {
775 php_error_docref(NULL, E_WARNING, "session.upload_progress.freq must be greater than or equal to 0");
776 return FAILURE;
777 }
778 if(ZSTR_LEN(new_value) > 0 && ZSTR_VAL(new_value)[ZSTR_LEN(new_value)-1] == '%') {
779 if(tmp > 100) {
780 php_error_docref(NULL, E_WARNING, "session.upload_progress.freq must be less than or equal to 100%%");
781 return FAILURE;
782 }
783 PS(rfc1867_freq) = -tmp;
784 } else {
785 PS(rfc1867_freq) = tmp;
786 }
787 return SUCCESS;
788 } /* }}} */
789
790 /* {{{ PHP_INI */
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 result || !vallen ? SUCCESS : FAILURE;
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) {
998 retval = FAILURE;
999 goto break_outer_loop;
1000 }
1001 }
1002
1003 namelen = q - p;
1004 name = zend_string_init(p, namelen, 0);
1005 q++;
1006
1007 current = var_tmp_var(&var_hash);
1008 if (php_var_unserialize(current, (const unsigned char **)&q, (const unsigned char *)endptr, &var_hash)) {
1009 ZVAL_PTR(&rv, current);
1010 php_set_session_var(name, &rv, &var_hash);
1011 } else {
1012 zend_string_release_ex(name, 0);
1013 retval = FAILURE;
1014 goto break_outer_loop;
1015 }
1016 zend_string_release_ex(name, 0);
1017 p = q;
1018 }
1019
1020 break_outer_loop:
1021 php_session_normalize_vars();
1022
1023 PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
1024
1025 return retval;
1026 }
1027 /* }}} */
1028
1029 #define MAX_SERIALIZERS 32
1030 #define PREDEFINED_SERIALIZERS 3
1031
1032 static ps_serializer ps_serializers[MAX_SERIALIZERS + 1] = {
1033 PS_SERIALIZER_ENTRY(php_serialize),
1034 PS_SERIALIZER_ENTRY(php),
1035 PS_SERIALIZER_ENTRY(php_binary)
1036 };
1037
php_session_register_serializer(const char * name,zend_string * (* encode)(PS_SERIALIZER_ENCODE_ARGS),int (* decode)(PS_SERIALIZER_DECODE_ARGS))1038 PHPAPI int php_session_register_serializer(const char *name, zend_string *(*encode)(PS_SERIALIZER_ENCODE_ARGS), int (*decode)(PS_SERIALIZER_DECODE_ARGS)) /* {{{ */
1039 {
1040 int ret = FAILURE;
1041 int i;
1042
1043 for (i = 0; i < MAX_SERIALIZERS; i++) {
1044 if (ps_serializers[i].name == NULL) {
1045 ps_serializers[i].name = name;
1046 ps_serializers[i].encode = encode;
1047 ps_serializers[i].decode = decode;
1048 ps_serializers[i + 1].name = NULL;
1049 ret = SUCCESS;
1050 break;
1051 }
1052 }
1053 return ret;
1054 }
1055 /* }}} */
1056
1057 /* *******************
1058 * Storage Modules *
1059 ******************* */
1060
1061 #define MAX_MODULES 32
1062 #define PREDEFINED_MODULES 2
1063
1064 static const ps_module *ps_modules[MAX_MODULES + 1] = {
1065 ps_files_ptr,
1066 ps_user_ptr
1067 };
1068
php_session_register_module(const ps_module * ptr)1069 PHPAPI int php_session_register_module(const ps_module *ptr) /* {{{ */
1070 {
1071 int ret = FAILURE;
1072 int i;
1073
1074 for (i = 0; i < MAX_MODULES; i++) {
1075 if (!ps_modules[i]) {
1076 ps_modules[i] = ptr;
1077 ret = SUCCESS;
1078 break;
1079 }
1080 }
1081 return ret;
1082 }
1083 /* }}} */
1084
1085 /* Dummy PS module function */
1086 /* We consider any ID valid (thus also implying that a session with such an ID exists),
1087 thus we always return SUCCESS */
php_session_validate_sid(PS_VALIDATE_SID_ARGS)1088 PHPAPI int php_session_validate_sid(PS_VALIDATE_SID_ARGS) {
1089 return SUCCESS;
1090 }
1091
1092 /* Dummy PS module function */
php_session_update_timestamp(PS_UPDATE_TIMESTAMP_ARGS)1093 PHPAPI int php_session_update_timestamp(PS_UPDATE_TIMESTAMP_ARGS) {
1094 return SUCCESS;
1095 }
1096
1097
1098 /* ******************
1099 * Cache Limiters *
1100 ****************** */
1101
1102 typedef struct {
1103 char *name;
1104 void (*func)(void);
1105 } php_session_cache_limiter_t;
1106
1107 #define CACHE_LIMITER(name) _php_cache_limiter_##name
1108 #define CACHE_LIMITER_FUNC(name) static void CACHE_LIMITER(name)(void)
1109 #define CACHE_LIMITER_ENTRY(name) { #name, CACHE_LIMITER(name) },
1110 #define ADD_HEADER(a) sapi_add_header(a, strlen(a), 1);
1111 #define MAX_STR 512
1112
1113 static const char *month_names[] = {
1114 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
1115 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
1116 };
1117
1118 static const char *week_days[] = {
1119 "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"
1120 };
1121
strcpy_gmt(char * ubuf,time_t * when)1122 static inline void strcpy_gmt(char *ubuf, time_t *when) /* {{{ */
1123 {
1124 char buf[MAX_STR];
1125 struct tm tm, *res;
1126 int n;
1127
1128 res = php_gmtime_r(when, &tm);
1129
1130 if (!res) {
1131 ubuf[0] = '\0';
1132 return;
1133 }
1134
1135 n = slprintf(buf, sizeof(buf), "%s, %02d %s %d %02d:%02d:%02d GMT", /* SAFE */
1136 week_days[tm.tm_wday], tm.tm_mday,
1137 month_names[tm.tm_mon], tm.tm_year + 1900,
1138 tm.tm_hour, tm.tm_min,
1139 tm.tm_sec);
1140 memcpy(ubuf, buf, n);
1141 ubuf[n] = '\0';
1142 }
1143 /* }}} */
1144
last_modified(void)1145 static inline void last_modified(void) /* {{{ */
1146 {
1147 const char *path;
1148 zend_stat_t sb;
1149 char buf[MAX_STR + 1];
1150
1151 path = SG(request_info).path_translated;
1152 if (path) {
1153 if (VCWD_STAT(path, &sb) == -1) {
1154 return;
1155 }
1156
1157 #define LAST_MODIFIED "Last-Modified: "
1158 memcpy(buf, LAST_MODIFIED, sizeof(LAST_MODIFIED) - 1);
1159 strcpy_gmt(buf + sizeof(LAST_MODIFIED) - 1, &sb.st_mtime);
1160 ADD_HEADER(buf);
1161 }
1162 }
1163 /* }}} */
1164
1165 #define EXPIRES "Expires: "
CACHE_LIMITER_FUNC(public)1166 CACHE_LIMITER_FUNC(public) /* {{{ */
1167 {
1168 char buf[MAX_STR + 1];
1169 struct timeval tv;
1170 time_t now;
1171
1172 gettimeofday(&tv, NULL);
1173 now = tv.tv_sec + PS(cache_expire) * 60;
1174 memcpy(buf, EXPIRES, sizeof(EXPIRES) - 1);
1175 strcpy_gmt(buf + sizeof(EXPIRES) - 1, &now);
1176 ADD_HEADER(buf);
1177
1178 snprintf(buf, sizeof(buf) , "Cache-Control: public, max-age=" ZEND_LONG_FMT, PS(cache_expire) * 60); /* SAFE */
1179 ADD_HEADER(buf);
1180
1181 last_modified();
1182 }
1183 /* }}} */
1184
CACHE_LIMITER_FUNC(private_no_expire)1185 CACHE_LIMITER_FUNC(private_no_expire) /* {{{ */
1186 {
1187 char buf[MAX_STR + 1];
1188
1189 snprintf(buf, sizeof(buf), "Cache-Control: private, max-age=" ZEND_LONG_FMT, PS(cache_expire) * 60); /* SAFE */
1190 ADD_HEADER(buf);
1191
1192 last_modified();
1193 }
1194 /* }}} */
1195
CACHE_LIMITER_FUNC(private)1196 CACHE_LIMITER_FUNC(private) /* {{{ */
1197 {
1198 ADD_HEADER("Expires: Thu, 19 Nov 1981 08:52:00 GMT");
1199 CACHE_LIMITER(private_no_expire)();
1200 }
1201 /* }}} */
1202
CACHE_LIMITER_FUNC(nocache)1203 CACHE_LIMITER_FUNC(nocache) /* {{{ */
1204 {
1205 ADD_HEADER("Expires: Thu, 19 Nov 1981 08:52:00 GMT");
1206
1207 /* For HTTP/1.1 conforming clients */
1208 ADD_HEADER("Cache-Control: no-store, no-cache, must-revalidate");
1209
1210 /* For HTTP/1.0 conforming clients */
1211 ADD_HEADER("Pragma: no-cache");
1212 }
1213 /* }}} */
1214
1215 static const php_session_cache_limiter_t php_session_cache_limiters[] = {
1216 CACHE_LIMITER_ENTRY(public)
1217 CACHE_LIMITER_ENTRY(private)
1218 CACHE_LIMITER_ENTRY(private_no_expire)
1219 CACHE_LIMITER_ENTRY(nocache)
1220 {0}
1221 };
1222
php_session_cache_limiter(void)1223 static int php_session_cache_limiter(void) /* {{{ */
1224 {
1225 const php_session_cache_limiter_t *lim;
1226
1227 if (PS(cache_limiter)[0] == '\0') return 0;
1228 if (PS(session_status) != php_session_active) return -1;
1229
1230 if (SG(headers_sent)) {
1231 const char *output_start_filename = php_output_get_start_filename();
1232 int output_start_lineno = php_output_get_start_lineno();
1233
1234 php_session_abort();
1235 if (output_start_filename) {
1236 php_error_docref(NULL, E_WARNING, "Session cache limiter cannot be sent after headers have already been sent (output started at %s:%d)", output_start_filename, output_start_lineno);
1237 } else {
1238 php_error_docref(NULL, E_WARNING, "Session cache limiter cannot be sent after headers have already been sent");
1239 }
1240 return -2;
1241 }
1242
1243 for (lim = php_session_cache_limiters; lim->name; lim++) {
1244 if (!strcasecmp(lim->name, PS(cache_limiter))) {
1245 lim->func();
1246 return 0;
1247 }
1248 }
1249
1250 return -1;
1251 }
1252 /* }}} */
1253
1254 /* *********************
1255 * Cookie Management *
1256 ********************* */
1257
1258 /*
1259 * Remove already sent session ID cookie.
1260 * It must be directly removed from SG(sapi_header) because sapi_add_header_ex()
1261 * removes all of matching cookie. i.e. It deletes all of Set-Cookie headers.
1262 */
php_session_remove_cookie(void)1263 static void php_session_remove_cookie(void) {
1264 sapi_header_struct *header;
1265 zend_llist *l = &SG(sapi_headers).headers;
1266 zend_llist_element *next;
1267 zend_llist_element *current;
1268 char *session_cookie;
1269 size_t session_cookie_len;
1270 size_t len = sizeof("Set-Cookie")-1;
1271
1272 ZEND_ASSERT(strpbrk(PS(session_name), "=,; \t\r\n\013\014") == NULL);
1273 spprintf(&session_cookie, 0, "Set-Cookie: %s=", PS(session_name));
1274
1275 session_cookie_len = strlen(session_cookie);
1276 current = l->head;
1277 while (current) {
1278 header = (sapi_header_struct *)(current->data);
1279 next = current->next;
1280 if (header->header_len > len && header->header[len] == ':'
1281 && !strncmp(header->header, session_cookie, session_cookie_len)) {
1282 if (current->prev) {
1283 current->prev->next = next;
1284 } else {
1285 l->head = next;
1286 }
1287 if (next) {
1288 next->prev = current->prev;
1289 } else {
1290 l->tail = current->prev;
1291 }
1292 sapi_free_header(header);
1293 efree(current);
1294 --l->count;
1295 }
1296 current = next;
1297 }
1298 efree(session_cookie);
1299 }
1300
php_session_send_cookie(void)1301 static int php_session_send_cookie(void) /* {{{ */
1302 {
1303 smart_str ncookie = {0};
1304 zend_string *date_fmt = NULL;
1305 zend_string *e_id;
1306
1307 if (SG(headers_sent)) {
1308 const char *output_start_filename = php_output_get_start_filename();
1309 int output_start_lineno = php_output_get_start_lineno();
1310
1311 if (output_start_filename) {
1312 php_error_docref(NULL, E_WARNING, "Session cookie cannot be sent after headers have already been sent (output started at %s:%d)", output_start_filename, output_start_lineno);
1313 } else {
1314 php_error_docref(NULL, E_WARNING, "Session cookie cannot be sent after headers have already been sent");
1315 }
1316 return FAILURE;
1317 }
1318
1319 /* Prevent broken Set-Cookie header, because the session_name might be user supplied */
1320 if (strpbrk(PS(session_name), "=,; \t\r\n\013\014") != NULL) { /* man isspace for \013 and \014 */
1321 php_error_docref(NULL, E_WARNING, "session.name cannot contain any of the following '=,; \\t\\r\\n\\013\\014'");
1322 return FAILURE;
1323 }
1324
1325 /* URL encode id because it might be user supplied */
1326 e_id = php_url_encode(ZSTR_VAL(PS(id)), ZSTR_LEN(PS(id)));
1327
1328 smart_str_appendl(&ncookie, "Set-Cookie: ", sizeof("Set-Cookie: ")-1);
1329 smart_str_appendl(&ncookie, PS(session_name), strlen(PS(session_name)));
1330 smart_str_appendc(&ncookie, '=');
1331 smart_str_appendl(&ncookie, ZSTR_VAL(e_id), ZSTR_LEN(e_id));
1332
1333 zend_string_release_ex(e_id, 0);
1334
1335 if (PS(cookie_lifetime) > 0) {
1336 struct timeval tv;
1337 time_t t;
1338
1339 gettimeofday(&tv, NULL);
1340 t = tv.tv_sec + PS(cookie_lifetime);
1341
1342 if (t > 0) {
1343 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);
1344 smart_str_appends(&ncookie, COOKIE_EXPIRES);
1345 smart_str_appendl(&ncookie, ZSTR_VAL(date_fmt), ZSTR_LEN(date_fmt));
1346 zend_string_release_ex(date_fmt, 0);
1347
1348 smart_str_appends(&ncookie, COOKIE_MAX_AGE);
1349 smart_str_append_long(&ncookie, PS(cookie_lifetime));
1350 }
1351 }
1352
1353 if (PS(cookie_path)[0]) {
1354 smart_str_appends(&ncookie, COOKIE_PATH);
1355 smart_str_appends(&ncookie, PS(cookie_path));
1356 }
1357
1358 if (PS(cookie_domain)[0]) {
1359 smart_str_appends(&ncookie, COOKIE_DOMAIN);
1360 smart_str_appends(&ncookie, PS(cookie_domain));
1361 }
1362
1363 if (PS(cookie_secure)) {
1364 smart_str_appends(&ncookie, COOKIE_SECURE);
1365 }
1366
1367 if (PS(cookie_httponly)) {
1368 smart_str_appends(&ncookie, COOKIE_HTTPONLY);
1369 }
1370
1371 if (PS(cookie_samesite)[0]) {
1372 smart_str_appends(&ncookie, COOKIE_SAMESITE);
1373 smart_str_appends(&ncookie, PS(cookie_samesite));
1374 }
1375
1376 smart_str_0(&ncookie);
1377
1378 php_session_remove_cookie(); /* remove already sent session ID cookie */
1379 /* 'replace' must be 0 here, else a previous Set-Cookie
1380 header, probably sent with setcookie() will be replaced! */
1381 sapi_add_header_ex(estrndup(ZSTR_VAL(ncookie.s), ZSTR_LEN(ncookie.s)), ZSTR_LEN(ncookie.s), 0, 0);
1382 smart_str_free(&ncookie);
1383
1384 return SUCCESS;
1385 }
1386 /* }}} */
1387
_php_find_ps_module(const char * name)1388 PHPAPI const ps_module *_php_find_ps_module(const char *name) /* {{{ */
1389 {
1390 const ps_module *ret = NULL;
1391 const ps_module **mod;
1392 int i;
1393
1394 for (i = 0, mod = ps_modules; i < MAX_MODULES; i++, mod++) {
1395 if (*mod && !strcasecmp(name, (*mod)->s_name)) {
1396 ret = *mod;
1397 break;
1398 }
1399 }
1400 return ret;
1401 }
1402 /* }}} */
1403
_php_find_ps_serializer(const char * name)1404 PHPAPI const ps_serializer *_php_find_ps_serializer(const char *name) /* {{{ */
1405 {
1406 const ps_serializer *ret = NULL;
1407 const ps_serializer *mod;
1408
1409 for (mod = ps_serializers; mod->name; mod++) {
1410 if (!strcasecmp(name, mod->name)) {
1411 ret = mod;
1412 break;
1413 }
1414 }
1415 return ret;
1416 }
1417 /* }}} */
1418
ppid2sid(zval * ppid)1419 static void ppid2sid(zval *ppid) {
1420 ZVAL_DEREF(ppid);
1421 if (Z_TYPE_P(ppid) == IS_STRING) {
1422 PS(id) = zend_string_init(Z_STRVAL_P(ppid), Z_STRLEN_P(ppid), 0);
1423 PS(send_cookie) = 0;
1424 } else {
1425 PS(id) = NULL;
1426 PS(send_cookie) = 1;
1427 }
1428 }
1429
1430
php_session_reset_id(void)1431 PHPAPI int php_session_reset_id(void) /* {{{ */
1432 {
1433 int module_number = PS(module_number);
1434 zval *sid, *data, *ppid;
1435 zend_bool apply_trans_sid;
1436
1437 if (!PS(id)) {
1438 php_error_docref(NULL, E_WARNING, "Cannot set session ID - session ID is not initialized");
1439 return FAILURE;
1440 }
1441
1442 if (PS(use_cookies) && PS(send_cookie)) {
1443 php_session_send_cookie();
1444 PS(send_cookie) = 0;
1445 }
1446
1447 /* If the SID constant exists, destroy it. */
1448 /* We must not delete any items in EG(zend_constants) */
1449 /* zend_hash_str_del(EG(zend_constants), "sid", sizeof("sid") - 1); */
1450 sid = zend_get_constant_str("SID", sizeof("SID") - 1);
1451
1452 if (PS(define_sid)) {
1453 smart_str var = {0};
1454
1455 smart_str_appends(&var, PS(session_name));
1456 smart_str_appendc(&var, '=');
1457 smart_str_appends(&var, ZSTR_VAL(PS(id)));
1458 smart_str_0(&var);
1459 if (sid) {
1460 zval_ptr_dtor_str(sid);
1461 ZVAL_NEW_STR(sid, var.s);
1462 } else {
1463 REGISTER_STRINGL_CONSTANT("SID", ZSTR_VAL(var.s), ZSTR_LEN(var.s), 0);
1464 smart_str_free(&var);
1465 }
1466 } else {
1467 if (sid) {
1468 zval_ptr_dtor_str(sid);
1469 ZVAL_EMPTY_STRING(sid);
1470 } else {
1471 REGISTER_STRINGL_CONSTANT("SID", "", 0, 0);
1472 }
1473 }
1474
1475 /* Apply trans sid if sid cookie is not set */
1476 apply_trans_sid = 0;
1477 if (APPLY_TRANS_SID) {
1478 apply_trans_sid = 1;
1479 if (PS(use_cookies) &&
1480 (data = zend_hash_str_find(&EG(symbol_table), "_COOKIE", sizeof("_COOKIE") - 1))) {
1481 ZVAL_DEREF(data);
1482 if (Z_TYPE_P(data) == IS_ARRAY &&
1483 (ppid = zend_hash_str_find(Z_ARRVAL_P(data), PS(session_name), strlen(PS(session_name))))) {
1484 ZVAL_DEREF(ppid);
1485 apply_trans_sid = 0;
1486 }
1487 }
1488 }
1489 if (apply_trans_sid) {
1490 zend_string *sname;
1491 sname = zend_string_init(PS(session_name), strlen(PS(session_name)), 0);
1492 php_url_scanner_reset_session_var(sname, 1); /* This may fail when session name has changed */
1493 zend_string_release_ex(sname, 0);
1494 php_url_scanner_add_session_var(PS(session_name), strlen(PS(session_name)), ZSTR_VAL(PS(id)), ZSTR_LEN(PS(id)), 1);
1495 }
1496 return SUCCESS;
1497 }
1498 /* }}} */
1499
1500
php_session_start(void)1501 PHPAPI int php_session_start(void) /* {{{ */
1502 {
1503 zval *ppid;
1504 zval *data;
1505 char *p, *value;
1506 size_t lensess;
1507
1508 switch (PS(session_status)) {
1509 case php_session_active:
1510 php_error(E_NOTICE, "Ignoring session_start() because a session has already been started");
1511 return FAILURE;
1512 break;
1513
1514 case php_session_disabled:
1515 value = zend_ini_string("session.save_handler", sizeof("session.save_handler") - 1, 0);
1516 if (!PS(mod) && value) {
1517 PS(mod) = _php_find_ps_module(value);
1518 if (!PS(mod)) {
1519 php_error_docref(NULL, E_WARNING, "Cannot find session save handler \"%s\" - session startup failed", value);
1520 return FAILURE;
1521 }
1522 }
1523 value = zend_ini_string("session.serialize_handler", sizeof("session.serialize_handler") - 1, 0);
1524 if (!PS(serializer) && value) {
1525 PS(serializer) = _php_find_ps_serializer(value);
1526 if (!PS(serializer)) {
1527 php_error_docref(NULL, E_WARNING, "Cannot find session serialization handler \"%s\" - session startup failed", value);
1528 return FAILURE;
1529 }
1530 }
1531 PS(session_status) = php_session_none;
1532 /* Fall through */
1533
1534 case php_session_none:
1535 default:
1536 /* Setup internal flags */
1537 PS(define_sid) = !PS(use_only_cookies); /* SID constant is defined when non-cookie ID is used */
1538 PS(send_cookie) = PS(use_cookies) || PS(use_only_cookies);
1539 }
1540
1541 lensess = strlen(PS(session_name));
1542
1543 /*
1544 * Cookies are preferred, because initially cookie and get
1545 * variables will be available.
1546 * URL/POST session ID may be used when use_only_cookies=Off.
1547 * session.use_strice_mode=On prevents session adoption.
1548 * Session based file upload progress uses non-cookie ID.
1549 */
1550
1551 if (!PS(id)) {
1552 if (PS(use_cookies) && (data = zend_hash_str_find(&EG(symbol_table), "_COOKIE", sizeof("_COOKIE") - 1))) {
1553 ZVAL_DEREF(data);
1554 if (Z_TYPE_P(data) == IS_ARRAY && (ppid = zend_hash_str_find(Z_ARRVAL_P(data), PS(session_name), lensess))) {
1555 ppid2sid(ppid);
1556 PS(send_cookie) = 0;
1557 PS(define_sid) = 0;
1558 }
1559 }
1560 /* Initialize session ID from non cookie values */
1561 if (!PS(use_only_cookies)) {
1562 if (!PS(id) && (data = zend_hash_str_find(&EG(symbol_table), "_GET", sizeof("_GET") - 1))) {
1563 ZVAL_DEREF(data);
1564 if (Z_TYPE_P(data) == IS_ARRAY && (ppid = zend_hash_str_find(Z_ARRVAL_P(data), PS(session_name), lensess))) {
1565 ppid2sid(ppid);
1566 }
1567 }
1568 if (!PS(id) && (data = zend_hash_str_find(&EG(symbol_table), "_POST", sizeof("_POST") - 1))) {
1569 ZVAL_DEREF(data);
1570 if (Z_TYPE_P(data) == IS_ARRAY && (ppid = zend_hash_str_find(Z_ARRVAL_P(data), PS(session_name), lensess))) {
1571 ppid2sid(ppid);
1572 }
1573 }
1574 /* Check the REQUEST_URI symbol for a string of the form
1575 * '<session-name>=<session-id>' to allow URLs of the form
1576 * http://yoursite/<session-name>=<session-id>/script.php */
1577 if (!PS(id) && zend_is_auto_global_str("_SERVER", sizeof("_SERVER") - 1) == SUCCESS &&
1578 (data = zend_hash_str_find(Z_ARRVAL(PG(http_globals)[TRACK_VARS_SERVER]), "REQUEST_URI", sizeof("REQUEST_URI") - 1)) &&
1579 Z_TYPE_P(data) == IS_STRING &&
1580 (p = strstr(Z_STRVAL_P(data), PS(session_name))) &&
1581 p[lensess] == '='
1582 ) {
1583 char *q;
1584 p += lensess + 1;
1585 if ((q = strpbrk(p, "/?\\"))) {
1586 PS(id) = zend_string_init(p, q - p, 0);
1587 }
1588 }
1589 /* Check whether the current request was referred to by
1590 * an external site which invalidates the previously found id. */
1591 if (PS(id) && PS(extern_referer_chk)[0] != '\0' &&
1592 !Z_ISUNDEF(PG(http_globals)[TRACK_VARS_SERVER]) &&
1593 (data = zend_hash_str_find(Z_ARRVAL(PG(http_globals)[TRACK_VARS_SERVER]), "HTTP_REFERER", sizeof("HTTP_REFERER") - 1)) &&
1594 Z_TYPE_P(data) == IS_STRING &&
1595 Z_STRLEN_P(data) != 0 &&
1596 strstr(Z_STRVAL_P(data), PS(extern_referer_chk)) == NULL
1597 ) {
1598 zend_string_release_ex(PS(id), 0);
1599 PS(id) = NULL;
1600 }
1601 }
1602 }
1603
1604 /* Finally check session id for dangerous characters
1605 * Security note: session id may be embedded in HTML pages.*/
1606 if (PS(id) && strpbrk(ZSTR_VAL(PS(id)), "\r\n\t <>'\"\\")) {
1607 zend_string_release_ex(PS(id), 0);
1608 PS(id) = NULL;
1609 }
1610
1611 if (php_session_initialize() == FAILURE
1612 || php_session_cache_limiter() == -2) {
1613 PS(session_status) = php_session_none;
1614 if (PS(id)) {
1615 zend_string_release_ex(PS(id), 0);
1616 PS(id) = NULL;
1617 }
1618 return FAILURE;
1619 }
1620 return SUCCESS;
1621 }
1622 /* }}} */
1623
php_session_flush(int write)1624 PHPAPI int php_session_flush(int write) /* {{{ */
1625 {
1626 if (PS(session_status) == php_session_active) {
1627 php_session_save_current_state(write);
1628 PS(session_status) = php_session_none;
1629 return SUCCESS;
1630 }
1631 return FAILURE;
1632 }
1633 /* }}} */
1634
php_session_abort(void)1635 static int php_session_abort(void) /* {{{ */
1636 {
1637 if (PS(session_status) == php_session_active) {
1638 if (PS(mod_data) || PS(mod_user_implemented)) {
1639 PS(mod)->s_close(&PS(mod_data));
1640 }
1641 PS(session_status) = php_session_none;
1642 return SUCCESS;
1643 }
1644 return FAILURE;
1645 }
1646 /* }}} */
1647
php_session_reset(void)1648 static int php_session_reset(void) /* {{{ */
1649 {
1650 if (PS(session_status) == php_session_active
1651 && php_session_initialize() == SUCCESS) {
1652 return SUCCESS;
1653 }
1654 return FAILURE;
1655 }
1656 /* }}} */
1657
1658
1659 /* This API is not used by any PHP modules including session currently.
1660 session_adapt_url() may be used to set Session ID to target url without
1661 starting "URL-Rewriter" output handler. */
session_adapt_url(const char * url,size_t url_len,char ** new_url,size_t * new_len)1662 PHPAPI void session_adapt_url(const char *url, size_t url_len, char **new_url, size_t *new_len) /* {{{ */
1663 {
1664 if (APPLY_TRANS_SID && (PS(session_status) == php_session_active)) {
1665 *new_url = php_url_scanner_adapt_single_url(url, url_len, PS(session_name), ZSTR_VAL(PS(id)), new_len, 1);
1666 }
1667 }
1668 /* }}} */
1669
1670 /* ********************************
1671 * Userspace exported functions *
1672 ******************************** */
1673
1674 /* {{{ session_set_cookie_params(array options)
1675 Set session cookie parameters */
PHP_FUNCTION(session_set_cookie_params)1676 PHP_FUNCTION(session_set_cookie_params)
1677 {
1678 HashTable *options_ht;
1679 zend_long lifetime_long;
1680 zend_string *lifetime = NULL, *path = NULL, *domain = NULL, *samesite = NULL;
1681 zend_bool secure = 0, secure_null = 1;
1682 zend_bool httponly = 0, httponly_null = 1;
1683 zend_string *ini_name;
1684 int result;
1685 int found = 0;
1686
1687 if (!PS(use_cookies)) {
1688 return;
1689 }
1690
1691 ZEND_PARSE_PARAMETERS_START(1, 5)
1692 Z_PARAM_ARRAY_HT_OR_LONG(options_ht, lifetime_long)
1693 Z_PARAM_OPTIONAL
1694 Z_PARAM_STR_OR_NULL(path)
1695 Z_PARAM_STR_OR_NULL(domain)
1696 Z_PARAM_BOOL_OR_NULL(secure, secure_null)
1697 Z_PARAM_BOOL_OR_NULL(httponly, httponly_null)
1698 ZEND_PARSE_PARAMETERS_END();
1699
1700 if (PS(session_status) == php_session_active) {
1701 php_error_docref(NULL, E_WARNING, "Session cookie parameters cannot be changed when a session is active");
1702 RETURN_FALSE;
1703 }
1704
1705 if (SG(headers_sent)) {
1706 php_error_docref(NULL, E_WARNING, "Session cookie parameters cannot be changed after headers have already been sent");
1707 RETURN_FALSE;
1708 }
1709
1710 if (options_ht) {
1711 zend_string *key;
1712 zval *value;
1713
1714 if (path) {
1715 zend_argument_value_error(2, "must be null when argument #1 ($lifetime_or_options) is an array");
1716 RETURN_THROWS();
1717 }
1718
1719 if (domain) {
1720 zend_argument_value_error(3, "must be null when argument #1 ($lifetime_or_options) is an array");
1721 RETURN_THROWS();
1722 }
1723
1724 if (!secure_null) {
1725 zend_argument_value_error(4, "must be null when argument #1 ($lifetime_or_options) is an array");
1726 RETURN_THROWS();
1727 }
1728
1729 if (!httponly_null) {
1730 zend_argument_value_error(5, "must be null when argument #1 ($lifetime_or_options) is an array");
1731 RETURN_THROWS();
1732 }
1733
1734 ZEND_HASH_FOREACH_STR_KEY_VAL(options_ht, key, value) {
1735 if (key) {
1736 ZVAL_DEREF(value);
1737 if(!strcasecmp("lifetime", ZSTR_VAL(key))) {
1738 lifetime = zval_get_string(value);
1739 found++;
1740 } else if(!strcasecmp("path", ZSTR_VAL(key))) {
1741 path = zval_get_string(value);
1742 found++;
1743 } else if(!strcasecmp("domain", ZSTR_VAL(key))) {
1744 domain = zval_get_string(value);
1745 found++;
1746 } else if(!strcasecmp("secure", ZSTR_VAL(key))) {
1747 secure = zval_is_true(value);
1748 secure_null = 0;
1749 found++;
1750 } else if(!strcasecmp("httponly", ZSTR_VAL(key))) {
1751 httponly = zval_is_true(value);
1752 httponly_null = 0;
1753 found++;
1754 } else if(!strcasecmp("samesite", ZSTR_VAL(key))) {
1755 samesite = zval_get_string(value);
1756 found++;
1757 } else {
1758 php_error_docref(NULL, E_WARNING, "Argument #1 ($lifetime_or_options) contains an unrecognized key \"%s\"", ZSTR_VAL(key));
1759 }
1760 } else {
1761 php_error_docref(NULL, E_WARNING, "Argument #1 ($lifetime_or_options) cannot contain numeric keys");
1762 }
1763 } ZEND_HASH_FOREACH_END();
1764
1765 if (found == 0) {
1766 zend_argument_value_error(1, "must contain at least 1 valid key");
1767 RETURN_THROWS();
1768 }
1769 } else {
1770 lifetime = zend_long_to_str(lifetime_long);
1771 }
1772
1773 /* Exception during string conversion */
1774 if (EG(exception)) {
1775 goto cleanup;
1776 }
1777
1778 if (lifetime) {
1779 ini_name = zend_string_init("session.cookie_lifetime", sizeof("session.cookie_lifetime") - 1, 0);
1780 result = zend_alter_ini_entry(ini_name, lifetime, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1781 zend_string_release_ex(ini_name, 0);
1782 if (result == FAILURE) {
1783 RETVAL_FALSE;
1784 goto cleanup;
1785 }
1786 }
1787 if (path) {
1788 ini_name = zend_string_init("session.cookie_path", sizeof("session.cookie_path") - 1, 0);
1789 result = zend_alter_ini_entry(ini_name, path, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1790 zend_string_release_ex(ini_name, 0);
1791 if (result == FAILURE) {
1792 RETVAL_FALSE;
1793 goto cleanup;
1794 }
1795 }
1796 if (domain) {
1797 ini_name = zend_string_init("session.cookie_domain", sizeof("session.cookie_domain") - 1, 0);
1798 result = zend_alter_ini_entry(ini_name, domain, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1799 zend_string_release_ex(ini_name, 0);
1800 if (result == FAILURE) {
1801 RETVAL_FALSE;
1802 goto cleanup;
1803 }
1804 }
1805 if (!secure_null) {
1806 ini_name = zend_string_init("session.cookie_secure", sizeof("session.cookie_secure") - 1, 0);
1807 result = zend_alter_ini_entry_chars(ini_name, secure ? "1" : "0", 1, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1808 zend_string_release_ex(ini_name, 0);
1809 if (result == FAILURE) {
1810 RETVAL_FALSE;
1811 goto cleanup;
1812 }
1813 }
1814 if (!httponly_null) {
1815 ini_name = zend_string_init("session.cookie_httponly", sizeof("session.cookie_httponly") - 1, 0);
1816 result = zend_alter_ini_entry_chars(ini_name, httponly ? "1" : "0", 1, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1817 zend_string_release_ex(ini_name, 0);
1818 if (result == FAILURE) {
1819 RETVAL_FALSE;
1820 goto cleanup;
1821 }
1822 }
1823 if (samesite) {
1824 ini_name = zend_string_init("session.cookie_samesite", sizeof("session.cookie_samesite") - 1, 0);
1825 result = zend_alter_ini_entry(ini_name, samesite, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1826 zend_string_release_ex(ini_name, 0);
1827 if (result == FAILURE) {
1828 RETVAL_FALSE;
1829 goto cleanup;
1830 }
1831 }
1832
1833 RETVAL_TRUE;
1834
1835 cleanup:
1836 if (lifetime) zend_string_release(lifetime);
1837 if (found > 0) {
1838 if (path) zend_string_release(path);
1839 if (domain) zend_string_release(domain);
1840 if (samesite) zend_string_release(samesite);
1841 }
1842 }
1843 /* }}} */
1844
1845 /* {{{ Return the session cookie parameters */
PHP_FUNCTION(session_get_cookie_params)1846 PHP_FUNCTION(session_get_cookie_params)
1847 {
1848 if (zend_parse_parameters_none() == FAILURE) {
1849 RETURN_THROWS();
1850 }
1851
1852 array_init(return_value);
1853
1854 add_assoc_long(return_value, "lifetime", PS(cookie_lifetime));
1855 add_assoc_string(return_value, "path", PS(cookie_path));
1856 add_assoc_string(return_value, "domain", PS(cookie_domain));
1857 add_assoc_bool(return_value, "secure", PS(cookie_secure));
1858 add_assoc_bool(return_value, "httponly", PS(cookie_httponly));
1859 add_assoc_string(return_value, "samesite", PS(cookie_samesite));
1860 }
1861 /* }}} */
1862
1863 /* {{{ Return the current session name. If newname is given, the session name is replaced with newname */
PHP_FUNCTION(session_name)1864 PHP_FUNCTION(session_name)
1865 {
1866 zend_string *name = NULL;
1867 zend_string *ini_name;
1868
1869 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|S!", &name) == FAILURE) {
1870 RETURN_THROWS();
1871 }
1872
1873 if (name && PS(session_status) == php_session_active) {
1874 php_error_docref(NULL, E_WARNING, "Session name cannot be changed when a session is active");
1875 RETURN_FALSE;
1876 }
1877
1878 if (name && SG(headers_sent)) {
1879 php_error_docref(NULL, E_WARNING, "Session name cannot be changed after headers have already been sent");
1880 RETURN_FALSE;
1881 }
1882
1883 RETVAL_STRING(PS(session_name));
1884
1885 if (name) {
1886 ini_name = zend_string_init("session.name", sizeof("session.name") - 1, 0);
1887 zend_alter_ini_entry(ini_name, name, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1888 zend_string_release_ex(ini_name, 0);
1889 }
1890 }
1891 /* }}} */
1892
1893 /* {{{ 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)1894 PHP_FUNCTION(session_module_name)
1895 {
1896 zend_string *name = NULL;
1897 zend_string *ini_name;
1898
1899 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|S!", &name) == FAILURE) {
1900 RETURN_THROWS();
1901 }
1902
1903 if (name && PS(session_status) == php_session_active) {
1904 php_error_docref(NULL, E_WARNING, "Session save handler module cannot be changed when a session is active");
1905 RETURN_FALSE;
1906 }
1907
1908 if (name && SG(headers_sent)) {
1909 php_error_docref(NULL, E_WARNING, "Session save handler module cannot be changed after headers have already been sent");
1910 RETURN_FALSE;
1911 }
1912
1913 /* Set return_value to current module name */
1914 if (PS(mod) && PS(mod)->s_name) {
1915 RETVAL_STRING(PS(mod)->s_name);
1916 } else {
1917 RETVAL_EMPTY_STRING();
1918 }
1919
1920 if (name) {
1921 if (zend_string_equals_literal_ci(name, "user")) {
1922 zend_argument_value_error(1, "cannot be \"user\"");
1923 RETURN_THROWS();
1924 }
1925 if (!_php_find_ps_module(ZSTR_VAL(name))) {
1926 php_error_docref(NULL, E_WARNING, "Session handler module \"%s\" cannot be found", ZSTR_VAL(name));
1927
1928 zval_ptr_dtor_str(return_value);
1929 RETURN_FALSE;
1930 }
1931 if (PS(mod_data) || PS(mod_user_implemented)) {
1932 PS(mod)->s_close(&PS(mod_data));
1933 }
1934 PS(mod_data) = NULL;
1935
1936 ini_name = zend_string_init("session.save_handler", sizeof("session.save_handler") - 1, 0);
1937 zend_alter_ini_entry(ini_name, name, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1938 zend_string_release_ex(ini_name, 0);
1939 }
1940 }
1941 /* }}} */
1942
save_handler_check_session()1943 static int save_handler_check_session() {
1944 if (PS(session_status) == php_session_active) {
1945 php_error_docref(NULL, E_WARNING, "Session save handler cannot be changed when a session is active");
1946 return FAILURE;
1947 }
1948
1949 if (SG(headers_sent)) {
1950 php_error_docref(NULL, E_WARNING, "Session save handler cannot be changed after headers have already been sent");
1951 return FAILURE;
1952 }
1953
1954 return SUCCESS;
1955 }
1956
set_user_save_handler_ini(void)1957 static inline void set_user_save_handler_ini(void) {
1958 zend_string *ini_name, *ini_val;
1959
1960 ini_name = zend_string_init("session.save_handler", sizeof("session.save_handler") - 1, 0);
1961 ini_val = zend_string_init("user", sizeof("user") - 1, 0);
1962 PS(set_handler) = 1;
1963 zend_alter_ini_entry(ini_name, ini_val, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
1964 PS(set_handler) = 0;
1965 zend_string_release_ex(ini_val, 0);
1966 zend_string_release_ex(ini_name, 0);
1967 }
1968
1969 /* {{{ Sets user-level functions */
PHP_FUNCTION(session_set_save_handler)1970 PHP_FUNCTION(session_set_save_handler)
1971 {
1972 zval *args = NULL;
1973 int i, num_args, argc = ZEND_NUM_ARGS();
1974
1975 if (argc > 0 && argc <= 2) {
1976 zval *obj = NULL;
1977 zend_string *func_name;
1978 zend_function *current_mptr;
1979 zend_bool register_shutdown = 1;
1980
1981 if (zend_parse_parameters(ZEND_NUM_ARGS(), "O|b", &obj, php_session_iface_entry, ®ister_shutdown) == FAILURE) {
1982 RETURN_THROWS();
1983 }
1984
1985 if (save_handler_check_session() == FAILURE) {
1986 RETURN_FALSE;
1987 }
1988
1989 /* For compatibility reason, implemented interface is not checked */
1990 /* Find implemented methods - SessionHandlerInterface */
1991 i = 0;
1992 ZEND_HASH_FOREACH_STR_KEY(&php_session_iface_entry->function_table, func_name) {
1993 if ((current_mptr = zend_hash_find_ptr(&Z_OBJCE_P(obj)->function_table, func_name))) {
1994 if (!Z_ISUNDEF(PS(mod_user_names).names[i])) {
1995 zval_ptr_dtor(&PS(mod_user_names).names[i]);
1996 }
1997
1998 array_init_size(&PS(mod_user_names).names[i], 2);
1999 Z_ADDREF_P(obj);
2000 add_next_index_zval(&PS(mod_user_names).names[i], obj);
2001 add_next_index_str(&PS(mod_user_names).names[i], zend_string_copy(func_name));
2002 } else {
2003 php_error_docref(NULL, E_ERROR, "Session save handler function table is corrupt");
2004 RETURN_FALSE;
2005 }
2006
2007 ++i;
2008 } ZEND_HASH_FOREACH_END();
2009
2010 /* Find implemented methods - SessionIdInterface (optional) */
2011 ZEND_HASH_FOREACH_STR_KEY(&php_session_id_iface_entry->function_table, func_name) {
2012 if ((current_mptr = zend_hash_find_ptr(&Z_OBJCE_P(obj)->function_table, func_name))) {
2013 if (!Z_ISUNDEF(PS(mod_user_names).names[i])) {
2014 zval_ptr_dtor(&PS(mod_user_names).names[i]);
2015 }
2016 array_init_size(&PS(mod_user_names).names[i], 2);
2017 Z_ADDREF_P(obj);
2018 add_next_index_zval(&PS(mod_user_names).names[i], obj);
2019 add_next_index_str(&PS(mod_user_names).names[i], zend_string_copy(func_name));
2020 } else {
2021 if (!Z_ISUNDEF(PS(mod_user_names).names[i])) {
2022 zval_ptr_dtor(&PS(mod_user_names).names[i]);
2023 ZVAL_UNDEF(&PS(mod_user_names).names[i]);
2024 }
2025 }
2026
2027 ++i;
2028 } ZEND_HASH_FOREACH_END();
2029
2030 /* Find implemented methods - SessionUpdateTimestampInterface (optional) */
2031 ZEND_HASH_FOREACH_STR_KEY(&php_session_update_timestamp_iface_entry->function_table, func_name) {
2032 if ((current_mptr = zend_hash_find_ptr(&Z_OBJCE_P(obj)->function_table, func_name))) {
2033 if (!Z_ISUNDEF(PS(mod_user_names).names[i])) {
2034 zval_ptr_dtor(&PS(mod_user_names).names[i]);
2035 }
2036 array_init_size(&PS(mod_user_names).names[i], 2);
2037 Z_ADDREF_P(obj);
2038 add_next_index_zval(&PS(mod_user_names).names[i], obj);
2039 add_next_index_str(&PS(mod_user_names).names[i], zend_string_copy(func_name));
2040 } else {
2041 if (!Z_ISUNDEF(PS(mod_user_names).names[i])) {
2042 zval_ptr_dtor(&PS(mod_user_names).names[i]);
2043 ZVAL_UNDEF(&PS(mod_user_names).names[i]);
2044 }
2045 }
2046 ++i;
2047 } ZEND_HASH_FOREACH_END();
2048
2049 if (register_shutdown) {
2050 /* create shutdown function */
2051 php_shutdown_function_entry shutdown_function_entry;
2052 ZVAL_STRING(&shutdown_function_entry.function_name, "session_register_shutdown");
2053 shutdown_function_entry.arg_count = 0;
2054 shutdown_function_entry.arguments = NULL;
2055
2056 /* add shutdown function, removing the old one if it exists */
2057 if (!register_user_shutdown_function("session_shutdown", sizeof("session_shutdown") - 1, &shutdown_function_entry)) {
2058 zval_ptr_dtor(&shutdown_function_entry.function_name);
2059 php_error_docref(NULL, E_WARNING, "Unable to register session shutdown function");
2060 RETURN_FALSE;
2061 }
2062 } else {
2063 /* remove shutdown function */
2064 remove_user_shutdown_function("session_shutdown", sizeof("session_shutdown") - 1);
2065 }
2066
2067 if (PS(session_status) != php_session_active && (!PS(mod) || PS(mod) != &ps_mod_user)) {
2068 set_user_save_handler_ini();
2069 }
2070
2071 RETURN_TRUE;
2072 }
2073
2074 /* Set procedural save handler functions */
2075 if (argc < 6 || PS_NUM_APIS < argc) {
2076 WRONG_PARAM_COUNT;
2077 }
2078
2079 if (zend_parse_parameters(argc, "+", &args, &num_args) == FAILURE) {
2080 RETURN_THROWS();
2081 }
2082
2083 /* At this point argc can only be between 6 and PS_NUM_APIS */
2084 for (i = 0; i < argc; i++) {
2085 if (!zend_is_callable(&args[i], 0, NULL)) {
2086 zend_string *name = zend_get_callable_name(&args[i]);
2087 zend_argument_type_error(i + 1, "must be a valid callback, function \"%s\" not found or invalid function name", ZSTR_VAL(name));
2088 zend_string_release(name);
2089 RETURN_THROWS();
2090 }
2091 }
2092
2093 if (save_handler_check_session() == FAILURE) {
2094 RETURN_FALSE;
2095 }
2096
2097 /* remove shutdown function */
2098 remove_user_shutdown_function("session_shutdown", sizeof("session_shutdown") - 1);
2099
2100 if (!PS(mod) || PS(mod) != &ps_mod_user) {
2101 set_user_save_handler_ini();
2102 }
2103
2104 for (i = 0; i < argc; i++) {
2105 if (!Z_ISUNDEF(PS(mod_user_names).names[i])) {
2106 zval_ptr_dtor(&PS(mod_user_names).names[i]);
2107 }
2108 ZVAL_COPY(&PS(mod_user_names).names[i], &args[i]);
2109 }
2110
2111 RETURN_TRUE;
2112 }
2113 /* }}} */
2114
2115 /* {{{ 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)2116 PHP_FUNCTION(session_save_path)
2117 {
2118 zend_string *name = NULL;
2119 zend_string *ini_name;
2120
2121 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|P!", &name) == FAILURE) {
2122 RETURN_THROWS();
2123 }
2124
2125 if (name && PS(session_status) == php_session_active) {
2126 php_error_docref(NULL, E_WARNING, "Session save path cannot be changed when a session is active");
2127 RETURN_FALSE;
2128 }
2129
2130 if (name && SG(headers_sent)) {
2131 php_error_docref(NULL, E_WARNING, "Session save path cannot be changed after headers have already been sent");
2132 RETURN_FALSE;
2133 }
2134
2135 RETVAL_STRING(PS(save_path));
2136
2137 if (name) {
2138 ini_name = zend_string_init("session.save_path", sizeof("session.save_path") - 1, 0);
2139 zend_alter_ini_entry(ini_name, name, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
2140 zend_string_release_ex(ini_name, 0);
2141 }
2142 }
2143 /* }}} */
2144
2145 /* {{{ Return the current session id. If newid is given, the session id is replaced with newid */
PHP_FUNCTION(session_id)2146 PHP_FUNCTION(session_id)
2147 {
2148 zend_string *name = NULL;
2149 int argc = ZEND_NUM_ARGS();
2150
2151 if (zend_parse_parameters(argc, "|S!", &name) == FAILURE) {
2152 RETURN_THROWS();
2153 }
2154
2155 if (name && PS(session_status) == php_session_active) {
2156 php_error_docref(NULL, E_WARNING, "Session ID cannot be changed when a session is active");
2157 RETURN_FALSE;
2158 }
2159
2160 if (name && PS(use_cookies) && SG(headers_sent)) {
2161 php_error_docref(NULL, E_WARNING, "Session ID cannot be changed after headers have already been sent");
2162 RETURN_FALSE;
2163 }
2164
2165 if (PS(id)) {
2166 /* keep compatibility for "\0" characters ???
2167 * see: ext/session/tests/session_id_error3.phpt */
2168 size_t len = strlen(ZSTR_VAL(PS(id)));
2169 if (UNEXPECTED(len != ZSTR_LEN(PS(id)))) {
2170 RETVAL_NEW_STR(zend_string_init(ZSTR_VAL(PS(id)), len, 0));
2171 } else {
2172 RETVAL_STR_COPY(PS(id));
2173 }
2174 } else {
2175 RETVAL_EMPTY_STRING();
2176 }
2177
2178 if (name) {
2179 if (PS(id)) {
2180 zend_string_release_ex(PS(id), 0);
2181 }
2182 PS(id) = zend_string_copy(name);
2183 }
2184 }
2185 /* }}} */
2186
2187 /* {{{ 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)2188 PHP_FUNCTION(session_regenerate_id)
2189 {
2190 zend_bool del_ses = 0;
2191 zend_string *data;
2192
2193 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|b", &del_ses) == FAILURE) {
2194 RETURN_THROWS();
2195 }
2196
2197 if (PS(session_status) != php_session_active) {
2198 php_error_docref(NULL, E_WARNING, "Session ID cannot be regenerated when there is no active session");
2199 RETURN_FALSE;
2200 }
2201
2202 if (SG(headers_sent)) {
2203 php_error_docref(NULL, E_WARNING, "Session ID cannot be regenerated after headers have already been sent");
2204 RETURN_FALSE;
2205 }
2206
2207 /* Process old session data */
2208 if (del_ses) {
2209 if (PS(mod)->s_destroy(&PS(mod_data), PS(id)) == FAILURE) {
2210 PS(mod)->s_close(&PS(mod_data));
2211 PS(session_status) = php_session_none;
2212 if (!EG(exception)) {
2213 php_error_docref(NULL, E_WARNING, "Session object destruction failed. ID: %s (path: %s)", PS(mod)->s_name, PS(save_path));
2214 }
2215 RETURN_FALSE;
2216 }
2217 } else {
2218 int ret;
2219 data = php_session_encode();
2220 if (data) {
2221 ret = PS(mod)->s_write(&PS(mod_data), PS(id), data, PS(gc_maxlifetime));
2222 zend_string_release_ex(data, 0);
2223 } else {
2224 ret = PS(mod)->s_write(&PS(mod_data), PS(id), ZSTR_EMPTY_ALLOC(), PS(gc_maxlifetime));
2225 }
2226 if (ret == FAILURE) {
2227 PS(mod)->s_close(&PS(mod_data));
2228 PS(session_status) = php_session_none;
2229 php_error_docref(NULL, E_WARNING, "Session write failed. ID: %s (path: %s)", PS(mod)->s_name, PS(save_path));
2230 RETURN_FALSE;
2231 }
2232 }
2233 PS(mod)->s_close(&PS(mod_data));
2234
2235 /* New session data */
2236 if (PS(session_vars)) {
2237 zend_string_release_ex(PS(session_vars), 0);
2238 PS(session_vars) = NULL;
2239 }
2240 zend_string_release_ex(PS(id), 0);
2241 PS(id) = NULL;
2242
2243 if (PS(mod)->s_open(&PS(mod_data), PS(save_path), PS(session_name)) == FAILURE) {
2244 PS(session_status) = php_session_none;
2245 if (!EG(exception)) {
2246 zend_throw_error(NULL, "Failed to open session: %s (path: %s)", PS(mod)->s_name, PS(save_path));
2247 }
2248 RETURN_THROWS();
2249 }
2250
2251 PS(id) = PS(mod)->s_create_sid(&PS(mod_data));
2252 if (!PS(id)) {
2253 PS(session_status) = php_session_none;
2254 if (!EG(exception)) {
2255 zend_throw_error(NULL, "Failed to create new session ID: %s (path: %s)", PS(mod)->s_name, PS(save_path));
2256 }
2257 RETURN_THROWS();
2258 }
2259 if (PS(use_strict_mode)) {
2260 if ((!PS(mod_user_implemented) && PS(mod)->s_validate_sid) || !Z_ISUNDEF(PS(mod_user_names).name.ps_validate_sid)) {
2261 int limit = 3;
2262 /* Try to generate non-existing ID */
2263 while (limit-- && PS(mod)->s_validate_sid(&PS(mod_data), PS(id)) == SUCCESS) {
2264 zend_string_release_ex(PS(id), 0);
2265 PS(id) = PS(mod)->s_create_sid(&PS(mod_data));
2266 if (!PS(id)) {
2267 PS(mod)->s_close(&PS(mod_data));
2268 PS(session_status) = php_session_none;
2269 if (!EG(exception)) {
2270 zend_throw_error(NULL, "Failed to create session ID by collision: %s (path: %s)", PS(mod)->s_name, PS(save_path));
2271 }
2272 RETURN_THROWS();
2273 }
2274 }
2275 }
2276 // TODO warn that ID cannot be verified? else { }
2277 }
2278 /* Read is required to make new session data at this point. */
2279 if (PS(mod)->s_read(&PS(mod_data), PS(id), &data, PS(gc_maxlifetime)) == FAILURE) {
2280 PS(mod)->s_close(&PS(mod_data));
2281 PS(session_status) = php_session_none;
2282 if (!EG(exception)) {
2283 zend_throw_error(NULL, "Failed to create(read) session ID: %s (path: %s)", PS(mod)->s_name, PS(save_path));
2284 }
2285 RETURN_THROWS();
2286 }
2287 if (data) {
2288 zend_string_release_ex(data, 0);
2289 }
2290
2291 if (PS(use_cookies)) {
2292 PS(send_cookie) = 1;
2293 }
2294 if (php_session_reset_id() == FAILURE) {
2295 RETURN_FALSE;
2296 }
2297
2298 RETURN_TRUE;
2299 }
2300 /* }}} */
2301
2302 /* {{{ Generate new session ID. Intended for user save handlers. */
PHP_FUNCTION(session_create_id)2303 PHP_FUNCTION(session_create_id)
2304 {
2305 zend_string *prefix = NULL, *new_id;
2306 smart_str id = {0};
2307
2308 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|S", &prefix) == FAILURE) {
2309 RETURN_THROWS();
2310 }
2311
2312 if (prefix && ZSTR_LEN(prefix)) {
2313 if (php_session_valid_key(ZSTR_VAL(prefix)) == FAILURE) {
2314 /* E_ERROR raised for security reason. */
2315 php_error_docref(NULL, E_WARNING, "Prefix cannot contain special characters. Only the A-Z, a-z, 0-9, \"-\", and \",\" characters are allowed");
2316 RETURN_FALSE;
2317 } else {
2318 smart_str_append(&id, prefix);
2319 }
2320 }
2321
2322 if (!PS(in_save_handler) && PS(session_status) == php_session_active) {
2323 int limit = 3;
2324 while (limit--) {
2325 new_id = PS(mod)->s_create_sid(&PS(mod_data));
2326 if (!PS(mod)->s_validate_sid || (PS(mod_user_implemented) && Z_ISUNDEF(PS(mod_user_names).name.ps_validate_sid))) {
2327 break;
2328 } else {
2329 /* Detect collision and retry */
2330 if (PS(mod)->s_validate_sid(&PS(mod_data), new_id) == SUCCESS) {
2331 zend_string_release_ex(new_id, 0);
2332 new_id = NULL;
2333 continue;
2334 }
2335 break;
2336 }
2337 }
2338 } else {
2339 new_id = php_session_create_id(NULL);
2340 }
2341
2342 if (new_id) {
2343 smart_str_append(&id, new_id);
2344 zend_string_release_ex(new_id, 0);
2345 } else {
2346 smart_str_free(&id);
2347 php_error_docref(NULL, E_WARNING, "Failed to create new ID");
2348 RETURN_FALSE;
2349 }
2350 smart_str_0(&id);
2351 RETVAL_NEW_STR(id.s);
2352 }
2353 /* }}} */
2354
2355 /* {{{ 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)2356 PHP_FUNCTION(session_cache_limiter)
2357 {
2358 zend_string *limiter = NULL;
2359 zend_string *ini_name;
2360
2361 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|S!", &limiter) == FAILURE) {
2362 RETURN_THROWS();
2363 }
2364
2365 if (limiter && PS(session_status) == php_session_active) {
2366 php_error_docref(NULL, E_WARNING, "Session cache limiter cannot be changed when a session is active");
2367 RETURN_FALSE;
2368 }
2369
2370 if (limiter && SG(headers_sent)) {
2371 php_error_docref(NULL, E_WARNING, "Session cache limiter cannot be changed after headers have already been sent");
2372 RETURN_FALSE;
2373 }
2374
2375 RETVAL_STRING(PS(cache_limiter));
2376
2377 if (limiter) {
2378 ini_name = zend_string_init("session.cache_limiter", sizeof("session.cache_limiter") - 1, 0);
2379 zend_alter_ini_entry(ini_name, limiter, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
2380 zend_string_release_ex(ini_name, 0);
2381 }
2382 }
2383 /* }}} */
2384
2385 /* {{{ 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)2386 PHP_FUNCTION(session_cache_expire)
2387 {
2388 zend_long expires;
2389 zend_bool expires_is_null = 1;
2390
2391 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|l!", &expires, &expires_is_null) == FAILURE) {
2392 RETURN_THROWS();
2393 }
2394
2395 if (!expires_is_null && PS(session_status) == php_session_active) {
2396 php_error_docref(NULL, E_WARNING, "Session cache expiration cannot be changed when a session is active");
2397 RETURN_LONG(PS(cache_expire));
2398 }
2399
2400 if (!expires_is_null && SG(headers_sent)) {
2401 php_error_docref(NULL, E_WARNING, "Session cache expiration cannot be changed after headers have already been sent");
2402 RETURN_FALSE;
2403 }
2404
2405 RETVAL_LONG(PS(cache_expire));
2406
2407 if (!expires_is_null) {
2408 zend_string *ini_name = zend_string_init("session.cache_expire", sizeof("session.cache_expire") - 1, 0);
2409 zend_string *ini_value = zend_long_to_str(expires);
2410 zend_alter_ini_entry(ini_name, ini_value, ZEND_INI_USER, ZEND_INI_STAGE_RUNTIME);
2411 zend_string_release_ex(ini_name, 0);
2412 zend_string_release_ex(ini_value, 0);
2413 }
2414 }
2415 /* }}} */
2416
2417 /* {{{ Serializes the current setup and returns the serialized representation */
PHP_FUNCTION(session_encode)2418 PHP_FUNCTION(session_encode)
2419 {
2420 zend_string *enc;
2421
2422 if (zend_parse_parameters_none() == FAILURE) {
2423 RETURN_THROWS();
2424 }
2425
2426 enc = php_session_encode();
2427 if (enc == NULL) {
2428 RETURN_FALSE;
2429 }
2430
2431 RETURN_STR(enc);
2432 }
2433 /* }}} */
2434
2435 /* {{{ Deserializes data and reinitializes the variables */
PHP_FUNCTION(session_decode)2436 PHP_FUNCTION(session_decode)
2437 {
2438 zend_string *str = NULL;
2439
2440 if (zend_parse_parameters(ZEND_NUM_ARGS(), "S", &str) == FAILURE) {
2441 RETURN_THROWS();
2442 }
2443
2444 if (PS(session_status) != php_session_active) {
2445 php_error_docref(NULL, E_WARNING, "Session data cannot be decoded when there is no active session");
2446 RETURN_FALSE;
2447 }
2448
2449 if (php_session_decode(str) == FAILURE) {
2450 RETURN_FALSE;
2451 }
2452 RETURN_TRUE;
2453 }
2454 /* }}} */
2455
php_session_start_set_ini(zend_string * varname,zend_string * new_value)2456 static int php_session_start_set_ini(zend_string *varname, zend_string *new_value) {
2457 int ret;
2458 smart_str buf ={0};
2459 smart_str_appends(&buf, "session");
2460 smart_str_appendc(&buf, '.');
2461 smart_str_append(&buf, varname);
2462 smart_str_0(&buf);
2463 ret = zend_alter_ini_entry_ex(buf.s, new_value, PHP_INI_USER, PHP_INI_STAGE_RUNTIME, 0);
2464 smart_str_free(&buf);
2465 return ret;
2466 }
2467
2468 /* {{{ Begin session */
PHP_FUNCTION(session_start)2469 PHP_FUNCTION(session_start)
2470 {
2471 zval *options = NULL;
2472 zval *value;
2473 zend_ulong num_idx;
2474 zend_string *str_idx;
2475 zend_long read_and_close = 0;
2476
2477 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|a", &options) == FAILURE) {
2478 RETURN_THROWS();
2479 }
2480
2481 if (PS(session_status) == php_session_active) {
2482 php_error_docref(NULL, E_NOTICE, "Ignoring session_start() because a session is already active");
2483 RETURN_TRUE;
2484 }
2485
2486 /*
2487 * TODO: To prevent unusable session with trans sid, actual output started status is
2488 * required. i.e. There shouldn't be any outputs in output buffer, otherwise session
2489 * module is unable to rewrite output.
2490 */
2491 if (PS(use_cookies) && SG(headers_sent)) {
2492 php_error_docref(NULL, E_WARNING, "Session cannot be started after headers have already been sent");
2493 RETURN_FALSE;
2494 }
2495
2496 /* set options */
2497 if (options) {
2498 ZEND_HASH_FOREACH_KEY_VAL(Z_ARRVAL_P(options), num_idx, str_idx, value) {
2499 if (str_idx) {
2500 switch(Z_TYPE_P(value)) {
2501 case IS_STRING:
2502 case IS_TRUE:
2503 case IS_FALSE:
2504 case IS_LONG:
2505 if (zend_string_equals_literal(str_idx, "read_and_close")) {
2506 read_and_close = zval_get_long(value);
2507 } else {
2508 zend_string *tmp_val;
2509 zend_string *val = zval_get_tmp_string(value, &tmp_val);
2510 if (php_session_start_set_ini(str_idx, val) == FAILURE) {
2511 php_error_docref(NULL, E_WARNING, "Setting option \"%s\" failed", ZSTR_VAL(str_idx));
2512 }
2513 zend_tmp_string_release(tmp_val);
2514 }
2515 break;
2516 default:
2517 zend_type_error("%s(): Option \"%s\" must be of type string|int|bool, %s given",
2518 get_active_function_name(), ZSTR_VAL(str_idx), zend_zval_type_name(value)
2519 );
2520 RETURN_THROWS();
2521 }
2522 }
2523 (void) num_idx;
2524 } ZEND_HASH_FOREACH_END();
2525 }
2526
2527 php_session_start();
2528
2529 if (PS(session_status) != php_session_active) {
2530 IF_SESSION_VARS() {
2531 zval *sess_var = Z_REFVAL(PS(http_session_vars));
2532 SEPARATE_ARRAY(sess_var);
2533 /* Clean $_SESSION. */
2534 zend_hash_clean(Z_ARRVAL_P(sess_var));
2535 }
2536 RETURN_FALSE;
2537 }
2538
2539 if (read_and_close) {
2540 php_session_flush(0);
2541 }
2542
2543 RETURN_TRUE;
2544 }
2545 /* }}} */
2546
2547 /* {{{ Destroy the current session and all data associated with it */
PHP_FUNCTION(session_destroy)2548 PHP_FUNCTION(session_destroy)
2549 {
2550 if (zend_parse_parameters_none() == FAILURE) {
2551 RETURN_THROWS();
2552 }
2553
2554 RETURN_BOOL(php_session_destroy() == SUCCESS);
2555 }
2556 /* }}} */
2557
2558 /* {{{ Unset all registered variables */
PHP_FUNCTION(session_unset)2559 PHP_FUNCTION(session_unset)
2560 {
2561 if (zend_parse_parameters_none() == FAILURE) {
2562 RETURN_THROWS();
2563 }
2564
2565 if (PS(session_status) != php_session_active) {
2566 RETURN_FALSE;
2567 }
2568
2569 IF_SESSION_VARS() {
2570 zval *sess_var = Z_REFVAL(PS(http_session_vars));
2571 SEPARATE_ARRAY(sess_var);
2572
2573 /* Clean $_SESSION. */
2574 zend_hash_clean(Z_ARRVAL_P(sess_var));
2575 }
2576 RETURN_TRUE;
2577 }
2578 /* }}} */
2579
2580 /* {{{ Perform GC and return number of deleted sessions */
PHP_FUNCTION(session_gc)2581 PHP_FUNCTION(session_gc)
2582 {
2583 zend_long num;
2584
2585 if (zend_parse_parameters_none() == FAILURE) {
2586 RETURN_THROWS();
2587 }
2588
2589 if (PS(session_status) != php_session_active) {
2590 php_error_docref(NULL, E_WARNING, "Session cannot be garbage collected when there is no active session");
2591 RETURN_FALSE;
2592 }
2593
2594 num = php_session_gc(1);
2595 if (num < 0) {
2596 RETURN_FALSE;
2597 }
2598
2599 RETURN_LONG(num);
2600 }
2601 /* }}} */
2602
2603
2604 /* {{{ Write session data and end session */
PHP_FUNCTION(session_write_close)2605 PHP_FUNCTION(session_write_close)
2606 {
2607 if (zend_parse_parameters_none() == FAILURE) {
2608 RETURN_THROWS();
2609 }
2610
2611 if (PS(session_status) != php_session_active) {
2612 RETURN_FALSE;
2613 }
2614 php_session_flush(1);
2615 RETURN_TRUE;
2616 }
2617 /* }}} */
2618
2619 /* {{{ Abort session and end session. Session data will not be written */
PHP_FUNCTION(session_abort)2620 PHP_FUNCTION(session_abort)
2621 {
2622 if (zend_parse_parameters_none() == FAILURE) {
2623 RETURN_THROWS();
2624 }
2625
2626 if (PS(session_status) != php_session_active) {
2627 RETURN_FALSE;
2628 }
2629 php_session_abort();
2630 RETURN_TRUE;
2631 }
2632 /* }}} */
2633
2634 /* {{{ Reset session data from saved session data */
PHP_FUNCTION(session_reset)2635 PHP_FUNCTION(session_reset)
2636 {
2637 if (zend_parse_parameters_none() == FAILURE) {
2638 RETURN_THROWS();
2639 }
2640
2641 if (PS(session_status) != php_session_active) {
2642 RETURN_FALSE;
2643 }
2644 php_session_reset();
2645 RETURN_TRUE;
2646 }
2647 /* }}} */
2648
2649 /* {{{ Returns the current session status */
PHP_FUNCTION(session_status)2650 PHP_FUNCTION(session_status)
2651 {
2652 if (zend_parse_parameters_none() == FAILURE) {
2653 RETURN_THROWS();
2654 }
2655
2656 RETURN_LONG(PS(session_status));
2657 }
2658 /* }}} */
2659
2660 /* {{{ Registers session_write_close() as a shutdown function */
PHP_FUNCTION(session_register_shutdown)2661 PHP_FUNCTION(session_register_shutdown)
2662 {
2663 php_shutdown_function_entry shutdown_function_entry;
2664
2665 ZEND_PARSE_PARAMETERS_NONE();
2666
2667 /* This function is registered itself as a shutdown function by
2668 * session_set_save_handler($obj). The reason we now register another
2669 * shutdown function is in case the user registered their own shutdown
2670 * function after calling session_set_save_handler(), which expects
2671 * the session still to be available.
2672 */
2673
2674 ZVAL_STRING(&shutdown_function_entry.function_name, "session_write_close");
2675 shutdown_function_entry.arg_count = 0;
2676 shutdown_function_entry.arguments = NULL;
2677
2678 if (!append_user_shutdown_function(&shutdown_function_entry)) {
2679 zval_ptr_dtor(&shutdown_function_entry.function_name);
2680
2681 /* Unable to register shutdown function, presumably because of lack
2682 * of memory, so flush the session now. It would be done in rshutdown
2683 * anyway but the handler will have had it's dtor called by then.
2684 * If the user does have a later shutdown function which needs the
2685 * session then tough luck.
2686 */
2687 php_session_flush(1);
2688 php_error_docref(NULL, E_WARNING, "Session shutdown function cannot be registered");
2689 }
2690 }
2691 /* }}} */
2692
2693 /* ********************************
2694 * Module Setup and Destruction *
2695 ******************************** */
2696
php_rinit_session(zend_bool auto_start)2697 static int php_rinit_session(zend_bool auto_start) /* {{{ */
2698 {
2699 php_rinit_session_globals();
2700
2701 PS(mod) = NULL;
2702 {
2703 char *value;
2704
2705 value = zend_ini_string("session.save_handler", sizeof("session.save_handler") - 1, 0);
2706 if (value) {
2707 PS(mod) = _php_find_ps_module(value);
2708 }
2709 }
2710
2711 if (PS(serializer) == NULL) {
2712 char *value;
2713
2714 value = zend_ini_string("session.serialize_handler", sizeof("session.serialize_handler") - 1, 0);
2715 if (value) {
2716 PS(serializer) = _php_find_ps_serializer(value);
2717 }
2718 }
2719
2720 if (PS(mod) == NULL || PS(serializer) == NULL) {
2721 /* current status is unusable */
2722 PS(session_status) = php_session_disabled;
2723 return SUCCESS;
2724 }
2725
2726 if (auto_start) {
2727 php_session_start();
2728 }
2729
2730 return SUCCESS;
2731 } /* }}} */
2732
PHP_RINIT_FUNCTION(session)2733 static PHP_RINIT_FUNCTION(session) /* {{{ */
2734 {
2735 return php_rinit_session(PS(auto_start));
2736 }
2737 /* }}} */
2738
PHP_RSHUTDOWN_FUNCTION(session)2739 static PHP_RSHUTDOWN_FUNCTION(session) /* {{{ */
2740 {
2741 int i;
2742
2743 if (PS(session_status) == php_session_active) {
2744 zend_try {
2745 php_session_flush(1);
2746 } zend_end_try();
2747 }
2748 php_rshutdown_session_globals();
2749
2750 /* this should NOT be done in php_rshutdown_session_globals() */
2751 for (i = 0; i < PS_NUM_APIS; i++) {
2752 if (!Z_ISUNDEF(PS(mod_user_names).names[i])) {
2753 zval_ptr_dtor(&PS(mod_user_names).names[i]);
2754 ZVAL_UNDEF(&PS(mod_user_names).names[i]);
2755 }
2756 }
2757
2758 return SUCCESS;
2759 }
2760 /* }}} */
2761
PHP_GINIT_FUNCTION(ps)2762 static PHP_GINIT_FUNCTION(ps) /* {{{ */
2763 {
2764 int i;
2765
2766 #if defined(COMPILE_DL_SESSION) && defined(ZTS)
2767 ZEND_TSRMLS_CACHE_UPDATE();
2768 #endif
2769
2770 ps_globals->save_path = NULL;
2771 ps_globals->session_name = NULL;
2772 ps_globals->id = NULL;
2773 ps_globals->mod = NULL;
2774 ps_globals->serializer = NULL;
2775 ps_globals->mod_data = NULL;
2776 ps_globals->session_status = php_session_none;
2777 ps_globals->default_mod = NULL;
2778 ps_globals->mod_user_implemented = 0;
2779 ps_globals->mod_user_is_open = 0;
2780 ps_globals->session_vars = NULL;
2781 ps_globals->set_handler = 0;
2782 for (i = 0; i < PS_NUM_APIS; i++) {
2783 ZVAL_UNDEF(&ps_globals->mod_user_names.names[i]);
2784 }
2785 ZVAL_UNDEF(&ps_globals->http_session_vars);
2786 }
2787 /* }}} */
2788
PHP_MINIT_FUNCTION(session)2789 static PHP_MINIT_FUNCTION(session) /* {{{ */
2790 {
2791 zend_class_entry ce;
2792
2793 zend_register_auto_global(zend_string_init_interned("_SESSION", sizeof("_SESSION") - 1, 1), 0, NULL);
2794
2795 my_module_number = module_number;
2796 PS(module_number) = module_number;
2797
2798 PS(session_status) = php_session_none;
2799 REGISTER_INI_ENTRIES();
2800
2801 #ifdef HAVE_LIBMM
2802 PHP_MINIT(ps_mm) (INIT_FUNC_ARGS_PASSTHRU);
2803 #endif
2804 php_session_rfc1867_orig_callback = php_rfc1867_callback;
2805 php_rfc1867_callback = php_session_rfc1867_callback;
2806
2807 /* Register interfaces */
2808 INIT_CLASS_ENTRY(ce, PS_IFACE_NAME, class_SessionHandlerInterface_methods);
2809 php_session_iface_entry = zend_register_internal_class(&ce);
2810 php_session_iface_entry->ce_flags |= ZEND_ACC_INTERFACE;
2811
2812 INIT_CLASS_ENTRY(ce, PS_SID_IFACE_NAME, class_SessionIdInterface_methods);
2813 php_session_id_iface_entry = zend_register_internal_class(&ce);
2814 php_session_id_iface_entry->ce_flags |= ZEND_ACC_INTERFACE;
2815
2816 INIT_CLASS_ENTRY(ce, PS_UPDATE_TIMESTAMP_IFACE_NAME, class_SessionUpdateTimestampHandlerInterface_methods);
2817 php_session_update_timestamp_iface_entry = zend_register_internal_class(&ce);
2818 php_session_update_timestamp_iface_entry->ce_flags |= ZEND_ACC_INTERFACE;
2819
2820 /* Register base class */
2821 INIT_CLASS_ENTRY(ce, PS_CLASS_NAME, class_SessionHandler_methods);
2822 php_session_class_entry = zend_register_internal_class(&ce);
2823 zend_class_implements(php_session_class_entry, 1, php_session_iface_entry);
2824 zend_class_implements(php_session_class_entry, 1, php_session_id_iface_entry);
2825
2826 REGISTER_LONG_CONSTANT("PHP_SESSION_DISABLED", php_session_disabled, CONST_CS | CONST_PERSISTENT);
2827 REGISTER_LONG_CONSTANT("PHP_SESSION_NONE", php_session_none, CONST_CS | CONST_PERSISTENT);
2828 REGISTER_LONG_CONSTANT("PHP_SESSION_ACTIVE", php_session_active, CONST_CS | CONST_PERSISTENT);
2829
2830 return SUCCESS;
2831 }
2832 /* }}} */
2833
PHP_MSHUTDOWN_FUNCTION(session)2834 static PHP_MSHUTDOWN_FUNCTION(session) /* {{{ */
2835 {
2836 UNREGISTER_INI_ENTRIES();
2837
2838 #ifdef HAVE_LIBMM
2839 PHP_MSHUTDOWN(ps_mm) (SHUTDOWN_FUNC_ARGS_PASSTHRU);
2840 #endif
2841
2842 /* reset rfc1867 callbacks */
2843 php_session_rfc1867_orig_callback = NULL;
2844 if (php_rfc1867_callback == php_session_rfc1867_callback) {
2845 php_rfc1867_callback = NULL;
2846 }
2847
2848 ps_serializers[PREDEFINED_SERIALIZERS].name = NULL;
2849 memset(ZEND_VOIDP(&ps_modules[PREDEFINED_MODULES]), 0, (MAX_MODULES-PREDEFINED_MODULES)*sizeof(ps_module *));
2850
2851 return SUCCESS;
2852 }
2853 /* }}} */
2854
PHP_MINFO_FUNCTION(session)2855 static PHP_MINFO_FUNCTION(session) /* {{{ */
2856 {
2857 const ps_module **mod;
2858 ps_serializer *ser;
2859 smart_str save_handlers = {0};
2860 smart_str ser_handlers = {0};
2861 int i;
2862
2863 /* Get save handlers */
2864 for (i = 0, mod = ps_modules; i < MAX_MODULES; i++, mod++) {
2865 if (*mod && (*mod)->s_name) {
2866 smart_str_appends(&save_handlers, (*mod)->s_name);
2867 smart_str_appendc(&save_handlers, ' ');
2868 }
2869 }
2870
2871 /* Get serializer handlers */
2872 for (i = 0, ser = ps_serializers; i < MAX_SERIALIZERS; i++, ser++) {
2873 if (ser && ser->name) {
2874 smart_str_appends(&ser_handlers, ser->name);
2875 smart_str_appendc(&ser_handlers, ' ');
2876 }
2877 }
2878
2879 php_info_print_table_start();
2880 php_info_print_table_row(2, "Session Support", "enabled" );
2881
2882 if (save_handlers.s) {
2883 smart_str_0(&save_handlers);
2884 php_info_print_table_row(2, "Registered save handlers", ZSTR_VAL(save_handlers.s));
2885 smart_str_free(&save_handlers);
2886 } else {
2887 php_info_print_table_row(2, "Registered save handlers", "none");
2888 }
2889
2890 if (ser_handlers.s) {
2891 smart_str_0(&ser_handlers);
2892 php_info_print_table_row(2, "Registered serializer handlers", ZSTR_VAL(ser_handlers.s));
2893 smart_str_free(&ser_handlers);
2894 } else {
2895 php_info_print_table_row(2, "Registered serializer handlers", "none");
2896 }
2897
2898 php_info_print_table_end();
2899
2900 DISPLAY_INI_ENTRIES();
2901 }
2902 /* }}} */
2903
2904 static const zend_module_dep session_deps[] = { /* {{{ */
2905 ZEND_MOD_OPTIONAL("hash")
2906 ZEND_MOD_REQUIRED("spl")
2907 ZEND_MOD_END
2908 };
2909 /* }}} */
2910
2911 /* ************************
2912 * Upload hook handling *
2913 ************************ */
2914
early_find_sid_in(zval * dest,int where,php_session_rfc1867_progress * progress)2915 static zend_bool early_find_sid_in(zval *dest, int where, php_session_rfc1867_progress *progress) /* {{{ */
2916 {
2917 zval *ppid;
2918
2919 if (Z_ISUNDEF(PG(http_globals)[where])) {
2920 return 0;
2921 }
2922
2923 if ((ppid = zend_hash_str_find(Z_ARRVAL(PG(http_globals)[where]), PS(session_name), progress->sname_len))
2924 && Z_TYPE_P(ppid) == IS_STRING) {
2925 zval_ptr_dtor(dest);
2926 ZVAL_COPY_DEREF(dest, ppid);
2927 return 1;
2928 }
2929
2930 return 0;
2931 } /* }}} */
2932
php_session_rfc1867_early_find_sid(php_session_rfc1867_progress * progress)2933 static void php_session_rfc1867_early_find_sid(php_session_rfc1867_progress *progress) /* {{{ */
2934 {
2935
2936 if (PS(use_cookies)) {
2937 sapi_module.treat_data(PARSE_COOKIE, NULL, NULL);
2938 if (early_find_sid_in(&progress->sid, TRACK_VARS_COOKIE, progress)) {
2939 progress->apply_trans_sid = 0;
2940 return;
2941 }
2942 }
2943 if (PS(use_only_cookies)) {
2944 return;
2945 }
2946 sapi_module.treat_data(PARSE_GET, NULL, NULL);
2947 early_find_sid_in(&progress->sid, TRACK_VARS_GET, progress);
2948 } /* }}} */
2949
php_check_cancel_upload(php_session_rfc1867_progress * progress)2950 static zend_bool php_check_cancel_upload(php_session_rfc1867_progress *progress) /* {{{ */
2951 {
2952 zval *progress_ary, *cancel_upload;
2953
2954 if ((progress_ary = zend_symtable_find(Z_ARRVAL_P(Z_REFVAL(PS(http_session_vars))), progress->key.s)) == NULL) {
2955 return 0;
2956 }
2957 if (Z_TYPE_P(progress_ary) != IS_ARRAY) {
2958 return 0;
2959 }
2960 if ((cancel_upload = zend_hash_str_find(Z_ARRVAL_P(progress_ary), "cancel_upload", sizeof("cancel_upload") - 1)) == NULL) {
2961 return 0;
2962 }
2963 return Z_TYPE_P(cancel_upload) == IS_TRUE;
2964 } /* }}} */
2965
php_session_rfc1867_update(php_session_rfc1867_progress * progress,int force_update)2966 static void php_session_rfc1867_update(php_session_rfc1867_progress *progress, int force_update) /* {{{ */
2967 {
2968 if (!force_update) {
2969 if (Z_LVAL_P(progress->post_bytes_processed) < progress->next_update) {
2970 return;
2971 }
2972 #ifdef HAVE_GETTIMEOFDAY
2973 if (PS(rfc1867_min_freq) > 0.0) {
2974 struct timeval tv = {0};
2975 double dtv;
2976 gettimeofday(&tv, NULL);
2977 dtv = (double) tv.tv_sec + tv.tv_usec / 1000000.0;
2978 if (dtv < progress->next_update_time) {
2979 return;
2980 }
2981 progress->next_update_time = dtv + PS(rfc1867_min_freq);
2982 }
2983 #endif
2984 progress->next_update = Z_LVAL_P(progress->post_bytes_processed) + progress->update_step;
2985 }
2986
2987 php_session_initialize();
2988 PS(session_status) = php_session_active;
2989 IF_SESSION_VARS() {
2990 zval *sess_var = Z_REFVAL(PS(http_session_vars));
2991 SEPARATE_ARRAY(sess_var);
2992
2993 progress->cancel_upload |= php_check_cancel_upload(progress);
2994 Z_TRY_ADDREF(progress->data);
2995 zend_hash_update(Z_ARRVAL_P(sess_var), progress->key.s, &progress->data);
2996 }
2997 php_session_flush(1);
2998 } /* }}} */
2999
php_session_rfc1867_cleanup(php_session_rfc1867_progress * progress)3000 static void php_session_rfc1867_cleanup(php_session_rfc1867_progress *progress) /* {{{ */
3001 {
3002 php_session_initialize();
3003 PS(session_status) = php_session_active;
3004 IF_SESSION_VARS() {
3005 zval *sess_var = Z_REFVAL(PS(http_session_vars));
3006 SEPARATE_ARRAY(sess_var);
3007 zend_hash_del(Z_ARRVAL_P(sess_var), progress->key.s);
3008 }
3009 php_session_flush(1);
3010 } /* }}} */
3011
php_session_rfc1867_callback(unsigned int event,void * event_data,void ** extra)3012 static int php_session_rfc1867_callback(unsigned int event, void *event_data, void **extra) /* {{{ */
3013 {
3014 php_session_rfc1867_progress *progress;
3015 int retval = SUCCESS;
3016
3017 if (php_session_rfc1867_orig_callback) {
3018 retval = php_session_rfc1867_orig_callback(event, event_data, extra);
3019 }
3020 if (!PS(rfc1867_enabled)) {
3021 return retval;
3022 }
3023
3024 progress = PS(rfc1867_progress);
3025
3026 switch(event) {
3027 case MULTIPART_EVENT_START: {
3028 multipart_event_start *data = (multipart_event_start *) event_data;
3029 progress = ecalloc(1, sizeof(php_session_rfc1867_progress));
3030 progress->content_length = data->content_length;
3031 progress->sname_len = strlen(PS(session_name));
3032 PS(rfc1867_progress) = progress;
3033 }
3034 break;
3035 case MULTIPART_EVENT_FORMDATA: {
3036 multipart_event_formdata *data = (multipart_event_formdata *) event_data;
3037 size_t value_len;
3038
3039 if (Z_TYPE(progress->sid) && progress->key.s) {
3040 break;
3041 }
3042
3043 /* orig callback may have modified *data->newlength */
3044 if (data->newlength) {
3045 value_len = *data->newlength;
3046 } else {
3047 value_len = data->length;
3048 }
3049
3050 if (data->name && data->value && value_len) {
3051 size_t name_len = strlen(data->name);
3052
3053 if (name_len == progress->sname_len && memcmp(data->name, PS(session_name), name_len) == 0) {
3054 zval_ptr_dtor(&progress->sid);
3055 ZVAL_STRINGL(&progress->sid, (*data->value), value_len);
3056 } else if (name_len == strlen(PS(rfc1867_name)) && memcmp(data->name, PS(rfc1867_name), name_len + 1) == 0) {
3057 smart_str_free(&progress->key);
3058 smart_str_appends(&progress->key, PS(rfc1867_prefix));
3059 smart_str_appendl(&progress->key, *data->value, value_len);
3060 smart_str_0(&progress->key);
3061
3062 progress->apply_trans_sid = APPLY_TRANS_SID;
3063 php_session_rfc1867_early_find_sid(progress);
3064 }
3065 }
3066 }
3067 break;
3068 case MULTIPART_EVENT_FILE_START: {
3069 multipart_event_file_start *data = (multipart_event_file_start *) event_data;
3070
3071 /* Do nothing when $_POST["PHP_SESSION_UPLOAD_PROGRESS"] is not set
3072 * or when we have no session id */
3073 if (!Z_TYPE(progress->sid) || !progress->key.s) {
3074 break;
3075 }
3076
3077 /* First FILE_START event, initializing data */
3078 if (Z_ISUNDEF(progress->data)) {
3079
3080 if (PS(rfc1867_freq) >= 0) {
3081 progress->update_step = PS(rfc1867_freq);
3082 } else if (PS(rfc1867_freq) < 0) { /* % of total size */
3083 progress->update_step = progress->content_length * -PS(rfc1867_freq) / 100;
3084 }
3085 progress->next_update = 0;
3086 progress->next_update_time = 0.0;
3087
3088 array_init(&progress->data);
3089 array_init(&progress->files);
3090
3091 add_assoc_long_ex(&progress->data, "start_time", sizeof("start_time") - 1, (zend_long)sapi_get_request_time());
3092 add_assoc_long_ex(&progress->data, "content_length", sizeof("content_length") - 1, progress->content_length);
3093 add_assoc_long_ex(&progress->data, "bytes_processed", sizeof("bytes_processed") - 1, data->post_bytes_processed);
3094 add_assoc_bool_ex(&progress->data, "done", sizeof("done") - 1, 0);
3095 add_assoc_zval_ex(&progress->data, "files", sizeof("files") - 1, &progress->files);
3096
3097 progress->post_bytes_processed = zend_hash_str_find(Z_ARRVAL(progress->data), "bytes_processed", sizeof("bytes_processed") - 1);
3098
3099 php_rinit_session(0);
3100 PS(id) = zend_string_init(Z_STRVAL(progress->sid), Z_STRLEN(progress->sid), 0);
3101 if (progress->apply_trans_sid) {
3102 /* Enable trans sid by modifying flags */
3103 PS(use_trans_sid) = 1;
3104 PS(use_only_cookies) = 0;
3105 }
3106 PS(send_cookie) = 0;
3107 }
3108
3109 array_init(&progress->current_file);
3110
3111 /* Each uploaded file has its own array. Trying to make it close to $_FILES entries. */
3112 add_assoc_string_ex(&progress->current_file, "field_name", sizeof("field_name") - 1, data->name);
3113 add_assoc_string_ex(&progress->current_file, "name", sizeof("name") - 1, *data->filename);
3114 add_assoc_null_ex(&progress->current_file, "tmp_name", sizeof("tmp_name") - 1);
3115 add_assoc_long_ex(&progress->current_file, "error", sizeof("error") - 1, 0);
3116
3117 add_assoc_bool_ex(&progress->current_file, "done", sizeof("done") - 1, 0);
3118 add_assoc_long_ex(&progress->current_file, "start_time", sizeof("start_time") - 1, (zend_long)time(NULL));
3119 add_assoc_long_ex(&progress->current_file, "bytes_processed", sizeof("bytes_processed") - 1, 0);
3120
3121 add_next_index_zval(&progress->files, &progress->current_file);
3122
3123 progress->current_file_bytes_processed = zend_hash_str_find(Z_ARRVAL(progress->current_file), "bytes_processed", sizeof("bytes_processed") - 1);
3124
3125 Z_LVAL_P(progress->current_file_bytes_processed) = data->post_bytes_processed;
3126 php_session_rfc1867_update(progress, 0);
3127 }
3128 break;
3129 case MULTIPART_EVENT_FILE_DATA: {
3130 multipart_event_file_data *data = (multipart_event_file_data *) event_data;
3131
3132 if (!Z_TYPE(progress->sid) || !progress->key.s) {
3133 break;
3134 }
3135
3136 Z_LVAL_P(progress->current_file_bytes_processed) = data->offset + data->length;
3137 Z_LVAL_P(progress->post_bytes_processed) = data->post_bytes_processed;
3138
3139 php_session_rfc1867_update(progress, 0);
3140 }
3141 break;
3142 case MULTIPART_EVENT_FILE_END: {
3143 multipart_event_file_end *data = (multipart_event_file_end *) event_data;
3144
3145 if (!Z_TYPE(progress->sid) || !progress->key.s) {
3146 break;
3147 }
3148
3149 if (data->temp_filename) {
3150 add_assoc_string_ex(&progress->current_file, "tmp_name", sizeof("tmp_name") - 1, data->temp_filename);
3151 }
3152
3153 add_assoc_long_ex(&progress->current_file, "error", sizeof("error") - 1, data->cancel_upload);
3154 add_assoc_bool_ex(&progress->current_file, "done", sizeof("done") - 1, 1);
3155
3156 Z_LVAL_P(progress->post_bytes_processed) = data->post_bytes_processed;
3157
3158 php_session_rfc1867_update(progress, 0);
3159 }
3160 break;
3161 case MULTIPART_EVENT_END: {
3162 multipart_event_end *data = (multipart_event_end *) event_data;
3163
3164 if (Z_TYPE(progress->sid) && progress->key.s) {
3165 if (PS(rfc1867_cleanup)) {
3166 php_session_rfc1867_cleanup(progress);
3167 } else {
3168 if (!Z_ISUNDEF(progress->data)) {
3169 SEPARATE_ARRAY(&progress->data);
3170 add_assoc_bool_ex(&progress->data, "done", sizeof("done") - 1, 1);
3171 Z_LVAL_P(progress->post_bytes_processed) = data->post_bytes_processed;
3172 php_session_rfc1867_update(progress, 1);
3173 }
3174 }
3175 php_rshutdown_session_globals();
3176 }
3177
3178 if (!Z_ISUNDEF(progress->data)) {
3179 zval_ptr_dtor(&progress->data);
3180 }
3181 zval_ptr_dtor(&progress->sid);
3182 smart_str_free(&progress->key);
3183 efree(progress);
3184 progress = NULL;
3185 PS(rfc1867_progress) = NULL;
3186 }
3187 break;
3188 }
3189
3190 if (progress && progress->cancel_upload) {
3191 return FAILURE;
3192 }
3193 return retval;
3194
3195 } /* }}} */
3196
3197 zend_module_entry session_module_entry = {
3198 STANDARD_MODULE_HEADER_EX,
3199 NULL,
3200 session_deps,
3201 "session",
3202 ext_functions,
3203 PHP_MINIT(session), PHP_MSHUTDOWN(session),
3204 PHP_RINIT(session), PHP_RSHUTDOWN(session),
3205 PHP_MINFO(session),
3206 PHP_SESSION_VERSION,
3207 PHP_MODULE_GLOBALS(ps),
3208 PHP_GINIT(ps),
3209 NULL,
3210 NULL,
3211 STANDARD_MODULE_PROPERTIES_EX
3212 };
3213
3214 #ifdef COMPILE_DL_SESSION
3215 #ifdef ZTS
3216 ZEND_TSRMLS_CACHE_DEFINE()
3217 #endif
3218 ZEND_GET_MODULE(session)
3219 #endif
3220