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 | https://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 | Marcus Boerger <helly@php.net> |
15 +----------------------------------------------------------------------+
16 */
17
18 #ifdef HAVE_CONFIG_H
19 #include <config.h>
20 #endif
21
22 #include "php.h"
23
24 #ifdef HAVE_DBA
25
26 #include "php_ini.h"
27 #include <stdio.h>
28 #include <fcntl.h>
29 #ifdef HAVE_SYS_FILE_H
30 #include <sys/file.h>
31 #endif
32
33 #include "php_dba.h"
34 #include "ext/standard/info.h"
35 #include "ext/standard/flock_compat.h" /* Compatibility for Windows */
36
37 #include "php_gdbm.h"
38 #include "php_ndbm.h"
39 #include "php_dbm.h"
40 #include "php_cdb.h"
41 #include "php_db1.h"
42 #include "php_db2.h"
43 #include "php_db3.h"
44 #include "php_db4.h"
45 #include "php_flatfile.h"
46 #include "php_inifile.h"
47 #include "php_qdbm.h"
48 #include "php_tcadb.h"
49 #include "php_lmdb.h"
50 #include "dba_arginfo.h"
51
52 PHP_MINIT_FUNCTION(dba);
53 PHP_MSHUTDOWN_FUNCTION(dba);
54 PHP_MINFO_FUNCTION(dba);
55
56 ZEND_BEGIN_MODULE_GLOBALS(dba)
57 const char *default_handler;
58 const dba_handler *default_hptr;
59 HashTable connections;
60 ZEND_END_MODULE_GLOBALS(dba)
61
62 ZEND_DECLARE_MODULE_GLOBALS(dba)
63
64 #define DBA_G(v) ZEND_MODULE_GLOBALS_ACCESSOR(dba, v)
65
66 static PHP_GINIT_FUNCTION(dba);
67 static PHP_GSHUTDOWN_FUNCTION(dba);
68
69 zend_module_entry dba_module_entry = {
70 STANDARD_MODULE_HEADER,
71 "dba",
72 ext_functions,
73 PHP_MINIT(dba),
74 PHP_MSHUTDOWN(dba),
75 NULL,
76 NULL,
77 PHP_MINFO(dba),
78 PHP_DBA_VERSION,
79 PHP_MODULE_GLOBALS(dba),
80 PHP_GINIT(dba),
81 PHP_GSHUTDOWN(dba),
82 NULL,
83 STANDARD_MODULE_PROPERTIES_EX
84 };
85
86 #ifdef COMPILE_DL_DBA
87 #ifdef ZTS
88 ZEND_TSRMLS_CACHE_DEFINE()
89 #endif
ZEND_GET_MODULE(dba)90 ZEND_GET_MODULE(dba)
91 #endif
92
93 /* {{{ php_dba_make_key */
94 static zend_string* php_dba_make_key(HashTable *key)
95 {
96 zval *group, *name;
97 zend_string *group_str, *name_str;
98 HashPosition pos;
99
100 if (zend_hash_num_elements(key) != 2) {
101 zend_argument_error(NULL, 1, "must have exactly two elements: \"key\" and \"name\"");
102 return NULL;
103 }
104
105 // TODO: Use ZEND_HASH_FOREACH_VAL() API?
106 zend_hash_internal_pointer_reset_ex(key, &pos);
107 group = zend_hash_get_current_data_ex(key, &pos);
108 group_str = zval_try_get_string(group);
109 if (!group_str) {
110 return NULL;
111 }
112
113 zend_hash_move_forward_ex(key, &pos);
114 name = zend_hash_get_current_data_ex(key, &pos);
115 name_str = zval_try_get_string(name);
116 if (!name_str) {
117 zend_string_release_ex(group_str, false);
118 return NULL;
119 }
120
121 // TODO: Check ZSTR_LEN(name) != 0
122 if (ZSTR_LEN(group_str) == 0) {
123 zend_string_release_ex(group_str, false);
124 return name_str;
125 }
126
127 zend_string *key_str = zend_strpprintf(0, "[%s]%s", ZSTR_VAL(group_str), ZSTR_VAL(name_str));
128 zend_string_release_ex(group_str, false);
129 zend_string_release_ex(name_str, false);
130 return key_str;
131 }
132 /* }}} */
133
134 #define DBA_RELEASE_HT_KEY_CREATION() if (key_ht) {zend_string_release_ex(key_str, false);}
135
136 #define CHECK_DBA_CONNECTION(info) \
137 if (info == NULL) { \
138 zend_throw_error(NULL, "DBA connection has already been closed"); \
139 RETURN_THROWS(); \
140 }
141
142 /* check whether the user has write access */
143 #define DBA_WRITE_CHECK(info) \
144 if ((info)->mode != DBA_WRITER && (info)->mode != DBA_TRUNC && (info)->mode != DBA_CREAT) { \
145 php_error_docref(NULL, E_WARNING, "Cannot perform a modification on a readonly database"); \
146 RETURN_FALSE; \
147 }
148
149 /* a DBA handler must have specific routines */
150
151 #define DBA_NAMED_HND(alias, name, flags) \
152 {\
153 #alias, flags, dba_open_##name, dba_close_##name, dba_fetch_##name, dba_update_##name, \
154 dba_exists_##name, dba_delete_##name, dba_firstkey_##name, dba_nextkey_##name, \
155 dba_optimize_##name, dba_sync_##name, dba_info_##name \
156 },
157
158 #define DBA_HND(name, flags) DBA_NAMED_HND(name, name, flags)
159
160 /* }}} */
161
162 /* {{{ globals */
163
164 static const dba_handler handler[] = {
165 #ifdef DBA_GDBM
166 DBA_HND(gdbm, DBA_LOCK_EXT) /* Locking done in library if set */
167 #endif
168 #ifdef DBA_DBM
169 DBA_HND(dbm, DBA_LOCK_ALL) /* No lock in lib */
170 #endif
171 #ifdef DBA_NDBM
172 DBA_HND(ndbm, DBA_LOCK_ALL) /* Could be done in library: filemode = 0644 + S_ENFMT */
173 #endif
174 #ifdef DBA_CDB
175 DBA_HND(cdb, DBA_STREAM_OPEN|DBA_LOCK_ALL) /* No lock in lib */
176 #endif
177 #ifdef DBA_CDB_BUILTIN
178 DBA_NAMED_HND(cdb_make, cdb, DBA_STREAM_OPEN|DBA_LOCK_ALL) /* No lock in lib */
179 #endif
180 #ifdef DBA_DB1
181 DBA_HND(db1, DBA_LOCK_ALL) /* No lock in lib */
182 #endif
183 #ifdef DBA_DB2
184 DBA_HND(db2, DBA_LOCK_ALL) /* No lock in lib */
185 #endif
186 #ifdef DBA_DB3
187 DBA_HND(db3, DBA_LOCK_ALL) /* No lock in lib */
188 #endif
189 #ifdef DBA_DB4
190 DBA_HND(db4, DBA_LOCK_ALL) /* No lock in lib */
191 #endif
192 #ifdef DBA_INIFILE
193 DBA_HND(inifile, DBA_STREAM_OPEN|DBA_LOCK_ALL|DBA_CAST_AS_FD) /* No lock in lib */
194 #endif
195 #ifdef DBA_FLATFILE
196 DBA_HND(flatfile, DBA_STREAM_OPEN|DBA_LOCK_ALL|DBA_NO_APPEND) /* No lock in lib */
197 #endif
198 #ifdef DBA_QDBM
199 DBA_HND(qdbm, DBA_LOCK_EXT)
200 #endif
201 #ifdef DBA_TCADB
202 DBA_HND(tcadb, DBA_LOCK_ALL)
203 #endif
204 #ifdef DBA_LMDB
205 DBA_HND(lmdb, DBA_LOCK_EXT)
206 #endif
207 { NULL, 0, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
208 };
209
210 #ifdef DBA_FLATFILE
211 #define DBA_DEFAULT "flatfile"
212 #elif defined(DBA_DB4)
213 #define DBA_DEFAULT "db4"
214 #elif defined(DBA_DB3)
215 #define DBA_DEFAULT "db3"
216 #elif defined(DBA_DB2)
217 #define DBA_DEFAULT "db2"
218 #elif defined(DBA_DB1)
219 #define DBA_DEFAULT "db1"
220 #elif defined(DBA_GDBM)
221 #define DBA_DEFAULT "gdbm"
222 #elif defined(DBA_NBBM)
223 #define DBA_DEFAULT "ndbm"
224 #elif defined(DBA_DBM)
225 #define DBA_DEFAULT "dbm"
226 #elif defined(DBA_QDBM)
227 #define DBA_DEFAULT "qdbm"
228 #elif defined(DBA_TCADB)
229 #define DBA_DEFAULT "tcadb"
230 #elif defined(DBA_LMDB)
231 #define DBA_DEFAULT "lmdb"
232 #else
233 #define DBA_DEFAULT ""
234 #endif
235 /* cdb/cdb_make and ini are no option here */
236
237 static int le_pdb;
238
239 static zend_class_entry *dba_connection_ce;
240 static zend_object_handlers dba_connection_object_handlers;
241
dba_close_info(dba_info * info)242 static void dba_close_info(dba_info *info)
243 {
244 ZEND_ASSERT(info != NULL && "connection has already been closed");
245
246 if (info->hnd) {
247 info->hnd->close(info);
248 info->hnd = NULL;
249 }
250 ZEND_ASSERT(info->path);
251 zend_string_release_ex(info->path, info->flags&DBA_PERSISTENT);
252 info->path = NULL;
253
254 if (info->fp && info->fp != info->lock.fp) {
255 if (info->flags & DBA_PERSISTENT) {
256 php_stream_pclose(info->fp);
257 } else {
258 php_stream_close(info->fp);
259 }
260 }
261 if (info->lock.fp) {
262 if (info->flags & DBA_PERSISTENT) {
263 php_stream_pclose(info->lock.fp);
264 } else {
265 php_stream_close(info->lock.fp);
266 }
267 }
268
269 pefree(info, info->flags & DBA_PERSISTENT);
270 info = NULL;
271 }
272
remove_pconnection_from_list(zval * zv,void * p)273 static int remove_pconnection_from_list(zval *zv, void *p)
274 {
275 zend_resource *le = Z_RES_P(zv);
276
277 if (le->ptr == p) {
278 return ZEND_HASH_APPLY_REMOVE;
279 }
280
281 return ZEND_HASH_APPLY_KEEP;
282 }
283
close_pconnection(zend_resource * rsrc)284 static void close_pconnection(zend_resource *rsrc)
285 {
286 dba_info *info = (dba_info *) rsrc->ptr;
287
288 dba_close_info(info);
289
290 rsrc->ptr = NULL;
291 }
292
dba_close_connection(dba_connection * connection)293 static void dba_close_connection(dba_connection *connection)
294 {
295 bool persistent = connection->info->flags & DBA_PERSISTENT;
296
297 if (!persistent) {
298 dba_close_info(connection->info);
299 }
300
301 connection->info = NULL;
302
303 if (connection->hash) {
304 zend_hash_del(&DBA_G(connections), connection->hash);
305 zend_string_release_ex(connection->hash, persistent);
306 connection->hash = NULL;
307 }
308 }
309
dba_connection_create_object(zend_class_entry * class_type)310 static zend_object *dba_connection_create_object(zend_class_entry *class_type)
311 {
312 dba_connection *intern = zend_object_alloc(sizeof(dba_connection), class_type);
313
314 zend_object_std_init(&intern->std, class_type);
315 object_properties_init(&intern->std, class_type);
316
317 return &intern->std;
318 }
319
dba_connection_get_constructor(zend_object * object)320 static zend_function *dba_connection_get_constructor(zend_object *object)
321 {
322 zend_throw_error(NULL, "Cannot directly construct Dba\\Connection, use dba_open() or dba_popen() instead");
323 return NULL;
324 }
325
dba_connection_cast_object(zend_object * obj,zval * result,int type)326 static zend_result dba_connection_cast_object(zend_object *obj, zval *result, int type)
327 {
328 if (type == IS_LONG) {
329 /* For better backward compatibility, make (int) $dba return the object ID,
330 * similar to how it previously returned the resource ID. */
331 ZVAL_LONG(result, obj->handle);
332
333 return SUCCESS;
334 }
335
336 return zend_std_cast_object_tostring(obj, result, type);
337 }
338
dba_connection_from_obj(zend_object * obj)339 static inline dba_connection *dba_connection_from_obj(zend_object *obj)
340 {
341 return (dba_connection *)((char *)(obj) - XtOffsetOf(dba_connection, std));
342 }
343
344 #define Z_DBA_CONNECTION_P(zv) dba_connection_from_obj(Z_OBJ_P(zv))
345 #define Z_DBA_INFO_P(zv) Z_DBA_CONNECTION_P(zv)->info
346
dba_connection_free_obj(zend_object * obj)347 static void dba_connection_free_obj(zend_object *obj)
348 {
349 dba_connection *connection = dba_connection_from_obj(obj);
350
351 if (connection->info) {
352 dba_close_connection(connection);
353 }
354
355 zend_object_std_dtor(&connection->std);
356 }
357
358 /* {{{ PHP_INI */
ZEND_INI_MH(OnUpdateDefaultHandler)359 static ZEND_INI_MH(OnUpdateDefaultHandler)
360 {
361 const dba_handler *hptr;
362
363 if (!ZSTR_LEN(new_value)) {
364 DBA_G(default_hptr) = NULL;
365 return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
366 }
367
368 for (hptr = handler; hptr->name && strcasecmp(hptr->name, ZSTR_VAL(new_value)); hptr++);
369
370 if (!hptr->name) {
371 php_error_docref(NULL, E_WARNING, "No such handler: %s", ZSTR_VAL(new_value));
372 return FAILURE;
373 }
374 DBA_G(default_hptr) = hptr;
375 return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage);
376 }
377
378 PHP_INI_BEGIN()
379 STD_PHP_INI_ENTRY("dba.default_handler", DBA_DEFAULT, PHP_INI_ALL, OnUpdateDefaultHandler, default_handler, zend_dba_globals, dba_globals)
PHP_INI_END()380 PHP_INI_END()
381 /* }}} */
382
383 /* {{{ PHP_GINIT_FUNCTION */
384 static PHP_GINIT_FUNCTION(dba)
385 {
386 #if defined(COMPILE_DL_DBA) && defined(ZTS)
387 ZEND_TSRMLS_CACHE_UPDATE();
388 #endif
389 dba_globals->default_handler = "";
390 dba_globals->default_hptr = NULL;
391 zend_hash_init(&dba_globals->connections, 0, NULL, NULL, true);
392 GC_MAKE_PERSISTENT_LOCAL(&dba_globals->connections);
393 }
394 /* }}} */
395
PHP_GSHUTDOWN_FUNCTION(dba)396 static PHP_GSHUTDOWN_FUNCTION(dba)
397 {
398 zend_hash_destroy(&dba_globals->connections);
399 }
400
401 /* {{{ PHP_MINIT_FUNCTION */
PHP_MINIT_FUNCTION(dba)402 PHP_MINIT_FUNCTION(dba)
403 {
404 REGISTER_INI_ENTRIES();
405 le_pdb = zend_register_list_destructors_ex(NULL, close_pconnection, "dba persistent", module_number);
406 register_dba_symbols(module_number);
407
408 dba_connection_ce = register_class_Dba_Connection();
409 dba_connection_ce->create_object = dba_connection_create_object;
410 dba_connection_ce->default_object_handlers = &dba_connection_object_handlers;
411
412 memcpy(&dba_connection_object_handlers, &std_object_handlers, sizeof(zend_object_handlers));
413 dba_connection_object_handlers.offset = XtOffsetOf(dba_connection, std);
414 dba_connection_object_handlers.free_obj = dba_connection_free_obj;
415 dba_connection_object_handlers.get_constructor = dba_connection_get_constructor;
416 dba_connection_object_handlers.clone_obj = NULL;
417 dba_connection_object_handlers.cast_object = dba_connection_cast_object;
418 dba_connection_object_handlers.compare = zend_objects_not_comparable;
419
420 return SUCCESS;
421 }
422 /* }}} */
423
424 /* {{{ PHP_MSHUTDOWN_FUNCTION */
PHP_MSHUTDOWN_FUNCTION(dba)425 PHP_MSHUTDOWN_FUNCTION(dba)
426 {
427 UNREGISTER_INI_ENTRIES();
428 return SUCCESS;
429 }
430 /* }}} */
431
432 #include "zend_smart_str.h"
433
434 /* {{{ PHP_MINFO_FUNCTION */
PHP_MINFO_FUNCTION(dba)435 PHP_MINFO_FUNCTION(dba)
436 {
437 const dba_handler *hptr;
438 smart_str handlers = {0};
439
440 for(hptr = handler; hptr->name; hptr++) {
441 smart_str_appends(&handlers, hptr->name);
442 smart_str_appendc(&handlers, ' ');
443 }
444
445 php_info_print_table_start();
446 php_info_print_table_row(2, "DBA support", "enabled");
447 if (handlers.s) {
448 smart_str_0(&handlers);
449 php_info_print_table_row(2, "Supported handlers", ZSTR_VAL(handlers.s));
450 smart_str_free(&handlers);
451 } else {
452 php_info_print_table_row(2, "Supported handlers", "none");
453 }
454 php_info_print_table_end();
455 DISPLAY_INI_ENTRIES();
456 }
457 /* }}} */
458
459 /* {{{ php_dba_update */
php_dba_update(INTERNAL_FUNCTION_PARAMETERS,int mode)460 static void php_dba_update(INTERNAL_FUNCTION_PARAMETERS, int mode)
461 {
462 zval *id;
463 dba_info *info = NULL;
464 HashTable *key_ht = NULL;
465 zend_string *key_str = NULL;
466 zend_string *value;
467
468 ZEND_PARSE_PARAMETERS_START(3, 3)
469 Z_PARAM_ARRAY_HT_OR_STR(key_ht, key_str)
470 Z_PARAM_STR(value)
471 Z_PARAM_OBJECT_OF_CLASS(id, dba_connection_ce);
472 ZEND_PARSE_PARAMETERS_END();
473
474 info = Z_DBA_INFO_P(id);
475 CHECK_DBA_CONNECTION(info);
476 DBA_WRITE_CHECK(info);
477
478 if (key_ht) {
479 key_str = php_dba_make_key(key_ht);
480 if (!key_str) {
481 // TODO ValueError?
482 RETURN_FALSE;
483 }
484 }
485
486 RETVAL_BOOL(info->hnd->update(info, key_str, value, mode) == SUCCESS);
487 DBA_RELEASE_HT_KEY_CREATION();
488 }
489 /* }}} */
490
491 /* {{{ php_find_dbm */
php_dba_find(const zend_string * path)492 static dba_info *php_dba_find(const zend_string *path)
493 {
494 zval *zv;
495
496 ZEND_HASH_MAP_FOREACH_VAL(&DBA_G(connections), zv) {
497 dba_info *info = Z_DBA_INFO_P(zv);
498 if (info && zend_string_equals(path, info->path)) {
499 return info;
500 }
501 } ZEND_HASH_FOREACH_END();
502
503 return NULL;
504 }
505 /* }}} */
506
php_dba_zend_string_dup_safe(zend_string * s,bool persistent)507 static zend_always_inline zend_string *php_dba_zend_string_dup_safe(zend_string *s, bool persistent)
508 {
509 if (ZSTR_IS_INTERNED(s) && !persistent) {
510 return s;
511 } else {
512 zend_string *duplicated_str = zend_string_init(ZSTR_VAL(s), ZSTR_LEN(s), persistent);
513 if (persistent) {
514 GC_MAKE_PERSISTENT_LOCAL(duplicated_str);
515 }
516 return duplicated_str;
517 }
518 }
519
520 /* {{{ php_dba_open */
php_dba_open(INTERNAL_FUNCTION_PARAMETERS,bool persistent)521 static void php_dba_open(INTERNAL_FUNCTION_PARAMETERS, bool persistent)
522 {
523 dba_mode_t modenr;
524 const dba_handler *hptr;
525 const char *error = NULL;
526 int lock_mode, lock_flag = 0;
527 const char *file_mode;
528 const char *lock_file_mode = NULL;
529 int persistent_flag = persistent ? STREAM_OPEN_PERSISTENT : 0;
530 char *lock_name;
531 #ifdef PHP_WIN32
532 bool restarted = 0;
533 bool need_creation = 0;
534 #endif
535
536 zend_string *path;
537 zend_string *mode;
538 zend_string *handler_str = NULL;
539 zend_long permission = 0644;
540 zend_long map_size = 0;
541 zend_long driver_flags = DBA_DEFAULT_DRIVER_FLAGS;
542 bool is_flags_null = true;
543
544 if (FAILURE == zend_parse_parameters(ZEND_NUM_ARGS(), "PS|S!lll!", &path, &mode, &handler_str,
545 &permission, &map_size, &driver_flags, &is_flags_null)) {
546 RETURN_THROWS();
547 }
548
549 if (ZSTR_LEN(path) == 0) {
550 zend_argument_must_not_be_empty_error(1);
551 RETURN_THROWS();
552 }
553 if (ZSTR_LEN(mode) == 0) {
554 zend_argument_must_not_be_empty_error(2);
555 RETURN_THROWS();
556 }
557 if (handler_str && ZSTR_LEN(handler_str) == 0) {
558 zend_argument_must_not_be_empty_error(3);
559 RETURN_THROWS();
560 }
561 // TODO Check Value for permission
562 if (map_size < 0) {
563 zend_argument_value_error(5, "must be greater than or equal to 0");
564 RETURN_THROWS();
565 }
566
567 if (!is_flags_null && driver_flags < 0) {
568 zend_argument_value_error(6, "must be greater than or equal to 0");
569 RETURN_THROWS();
570 }
571
572 char *resource_key;
573 size_t resource_key_len = spprintf(&resource_key, 0,
574 "dba_%d_%s_%s_%s", persistent, ZSTR_VAL(path), ZSTR_VAL(mode), handler_str ? ZSTR_VAL(handler_str) : ""
575 );
576
577 if (persistent) {
578 zend_resource *le;
579
580 /* try to find if we already have this link in our persistent list */
581 if ((le = zend_hash_str_find_ptr(&EG(persistent_list), resource_key, resource_key_len)) != NULL) {
582 if (le->type != le_pdb) {
583 // TODO This should never happen
584 efree(resource_key);
585 RETURN_FALSE;
586 }
587
588 object_init_ex(return_value, dba_connection_ce);
589 dba_connection *connection = Z_DBA_CONNECTION_P(return_value);
590 connection->info = (dba_info *)le->ptr;
591 connection->hash = zend_string_init(resource_key, resource_key_len, persistent);
592 if (persistent) {
593 GC_MAKE_PERSISTENT_LOCAL(connection->hash);
594 }
595
596 if (zend_hash_exists(&DBA_G(connections), connection->hash)) {
597 zend_hash_del(&DBA_G(connections), connection->hash);
598 }
599
600 zend_hash_add_new(&DBA_G(connections), connection->hash, return_value);
601 efree(resource_key);
602 return;
603 }
604 }
605
606 if (!handler_str) {
607 hptr = DBA_G(default_hptr);
608 if (!hptr) {
609 php_error_docref(NULL, E_WARNING, "No default handler selected");
610 efree(resource_key);
611 RETURN_FALSE;
612 }
613 ZEND_ASSERT(hptr->name);
614 } else {
615 /* Loop through global static var handlers to see if such a handler exists */
616 for (hptr = handler; hptr->name && strcasecmp(hptr->name, ZSTR_VAL(handler_str)); hptr++);
617
618 if (!hptr->name) {
619 php_error_docref(NULL, E_WARNING, "Handler \"%s\" is not available", ZSTR_VAL(handler_str));
620 efree(resource_key);
621 RETURN_FALSE;
622 }
623 }
624
625 /* Check mode: [rwnc][dl-]?t?
626 * r: Read
627 * w: Write
628 * n: Create/Truncate
629 * c: Create
630 *
631 * d: force lock on database file
632 * l: force lock on lck file
633 * -: ignore locking
634 *
635 * t: test open database, warning if locked
636 */
637 bool is_test_lock = false;
638 bool is_db_lock = false;
639 bool is_lock_ignored = false;
640 // bool is_file_lock = false;
641
642 if (ZSTR_LEN(mode) > 3) {
643 zend_argument_value_error(2, "must be at most 3 characters");
644 efree(resource_key);
645 RETURN_THROWS();
646 }
647 if (ZSTR_LEN(mode) == 3) {
648 if (ZSTR_VAL(mode)[2] != 't') {
649 zend_argument_value_error(2, "third character must be \"t\"");
650 efree(resource_key);
651 RETURN_THROWS();
652 }
653 is_test_lock = true;
654 }
655 if (ZSTR_LEN(mode) >= 2) {
656 switch (ZSTR_VAL(mode)[1]) {
657 case 't':
658 is_test_lock = true;
659 break;
660 case '-':
661 if ((hptr->flags & DBA_LOCK_ALL) == 0) {
662 php_error_docref(NULL, E_WARNING, "Locking cannot be disabled for handler %s", hptr->name);
663 efree(resource_key);
664 RETURN_FALSE;
665 }
666 is_lock_ignored = true;
667 lock_flag = 0;
668 break;
669 case 'd':
670 is_db_lock = true;
671 if ((hptr->flags & DBA_LOCK_ALL) == 0) {
672 lock_flag = (hptr->flags & DBA_LOCK_ALL);
673 break;
674 }
675 ZEND_FALLTHROUGH;
676 case 'l':
677 // is_file_lock = true;
678 lock_flag = DBA_LOCK_ALL;
679 if ((hptr->flags & DBA_LOCK_ALL) == 0) {
680 php_error_docref(NULL, E_NOTICE, "Handler %s does locking internally", hptr->name);
681 }
682 break;
683 default:
684 zend_argument_value_error(2, "second character must be one of \"d\", \"l\", \"-\", or \"t\"");
685 efree(resource_key);
686 RETURN_THROWS();
687 }
688 } else {
689 lock_flag = (hptr->flags&DBA_LOCK_ALL);
690 is_db_lock = true;
691 }
692
693 switch (ZSTR_VAL(mode)[0]) {
694 case 'r':
695 modenr = DBA_READER;
696 lock_mode = (lock_flag & DBA_LOCK_READER) ? LOCK_SH : 0;
697 file_mode = "r";
698 break;
699 case 'w':
700 modenr = DBA_WRITER;
701 lock_mode = (lock_flag & DBA_LOCK_WRITER) ? LOCK_EX : 0;
702 file_mode = "r+b";
703 break;
704 case 'c': {
705 #ifdef PHP_WIN32
706 if (hptr->flags & (DBA_NO_APPEND|DBA_CAST_AS_FD)) {
707 php_stream_statbuf ssb;
708 need_creation = (SUCCESS != php_stream_stat_path(ZSTR_VAL(path), &ssb));
709 }
710 #endif
711 modenr = DBA_CREAT;
712 lock_mode = (lock_flag & DBA_LOCK_CREAT) ? LOCK_EX : 0;
713 if (lock_mode) {
714 if (is_db_lock) {
715 /* the create/append check will be done on the lock
716 * when the lib opens the file it is already created
717 */
718 file_mode = "r+b"; /* read & write, seek 0 */
719 #ifdef PHP_WIN32
720 if (!need_creation) {
721 lock_file_mode = "r+b";
722 } else
723 #endif
724 lock_file_mode = "a+b"; /* append */
725 } else {
726 #ifdef PHP_WIN32
727 if (!need_creation) {
728 file_mode = "r+b";
729 } else
730 #endif
731 file_mode = "a+b"; /* append */
732 lock_file_mode = "w+b"; /* create/truncate */
733 }
734 } else {
735 #ifdef PHP_WIN32
736 if (!need_creation) {
737 file_mode = "r+b";
738 } else
739 #endif
740 file_mode = "a+b";
741 }
742 /* In case of the 'a+b' append mode, the handler is responsible
743 * to handle any rewind problems (see flatfile handler).
744 */
745 break;
746 }
747 case 'n':
748 modenr = DBA_TRUNC;
749 lock_mode = (lock_flag & DBA_LOCK_TRUNC) ? LOCK_EX : 0;
750 file_mode = "w+b";
751 break;
752 default:
753 zend_argument_value_error(2, "first character must be one of \"r\", \"w\", \"c\", or \"n\"");
754 efree(resource_key);
755 RETURN_THROWS();
756 }
757 if (!lock_file_mode) {
758 lock_file_mode = file_mode;
759 }
760 if (is_test_lock) {
761 if (is_lock_ignored) {
762 zend_argument_value_error(2, "cannot combine mode \"-\" (no lock) and \"t\" (test lock)");
763 efree(resource_key);
764 RETURN_THROWS();
765 }
766 if (!lock_mode) {
767 if ((hptr->flags & DBA_LOCK_ALL) == 0) {
768 php_error_docref(NULL, E_WARNING, "Handler %s uses its own locking which doesn't support mode modifier t (test lock)", hptr->name);
769 efree(resource_key);
770 RETURN_FALSE;
771 } else {
772 php_error_docref(NULL, E_WARNING, "Handler %s doesn't uses locking for this mode which makes modifier t (test lock) obsolete", hptr->name);
773 efree(resource_key);
774 RETURN_FALSE;
775 }
776 } else {
777 lock_mode |= LOCK_NB; /* test =: non blocking */
778 }
779 }
780
781 zval *connection_zval;
782 dba_connection *connection;
783 if ((connection_zval = zend_hash_str_find(&DBA_G(connections), resource_key, resource_key_len)) == NULL) {
784 object_init_ex(return_value, dba_connection_ce);
785 connection = Z_DBA_CONNECTION_P(return_value);
786
787 connection->info = pecalloc(1, sizeof(dba_info), persistent);
788 connection->info->path = php_dba_zend_string_dup_safe(path, persistent);
789 connection->info->mode = modenr;
790 connection->info->file_permission = permission;
791 connection->info->map_size = map_size;
792 connection->info->driver_flags = driver_flags;
793 connection->info->flags = (hptr->flags & ~DBA_LOCK_ALL) | (lock_flag & DBA_LOCK_ALL) | (persistent ? DBA_PERSISTENT : 0);
794 connection->info->lock.mode = lock_mode;
795 connection->hash = zend_string_init(resource_key, resource_key_len, persistent);
796 if (persistent) {
797 GC_MAKE_PERSISTENT_LOCAL(connection->hash);
798 }
799 } else {
800 ZVAL_COPY(return_value, connection_zval);
801 connection = Z_DBA_CONNECTION_P(return_value);
802 }
803
804 /* if any open call is a locking call:
805 * check if we already have a locking call open that should block this call
806 * the problem is some systems would allow read during write
807 */
808 if (hptr->flags & DBA_LOCK_ALL) {
809 dba_info *other;
810 if ((other = php_dba_find(connection->info->path)) != NULL) {
811 if ( ( (lock_mode&LOCK_EX) && (other->lock.mode&(LOCK_EX|LOCK_SH)) )
812 || ( (other->lock.mode&LOCK_EX) && (lock_mode&(LOCK_EX|LOCK_SH)) )
813 ) {
814 error = "Unable to establish lock (database file already open)"; /* force failure exit */
815 }
816 }
817 }
818
819 #ifdef PHP_WIN32
820 restart:
821 #endif
822 if (!error && lock_mode) {
823 if (is_db_lock) {
824 lock_name = ZSTR_VAL(path);
825 } else {
826 spprintf(&lock_name, 0, "%s.lck", ZSTR_VAL(connection->info->path));
827 if (!strcmp(file_mode, "r")) {
828 zend_string *opened_path = NULL;
829 /* when in read only mode try to use existing .lck file first */
830 /* do not log errors for .lck file while in read only mode on .lck file */
831 lock_file_mode = "rb";
832 connection->info->lock.fp = php_stream_open_wrapper(lock_name, lock_file_mode, STREAM_MUST_SEEK|IGNORE_PATH|persistent_flag, &opened_path);
833 if (opened_path) {
834 zend_string_release_ex(opened_path, 0);
835 }
836 }
837 if (!connection->info->lock.fp) {
838 /* when not in read mode or failed to open .lck file read only. now try again in create(write) mode and log errors */
839 lock_file_mode = "a+b";
840 }
841 }
842 if (!connection->info->lock.fp) {
843 zend_string *opened_path = NULL;
844 connection->info->lock.fp = php_stream_open_wrapper(lock_name, lock_file_mode, STREAM_MUST_SEEK|REPORT_ERRORS|IGNORE_PATH|persistent_flag, &opened_path);
845 if (connection->info->lock.fp) {
846 if (is_db_lock) {
847 ZEND_ASSERT(opened_path);
848 /* replace the path info with the real path of the opened file */
849 zend_string_release_ex(connection->info->path, persistent);
850 connection->info->path = php_dba_zend_string_dup_safe(opened_path, persistent);
851 }
852 }
853 if (opened_path) {
854 zend_string_release_ex(opened_path, 0);
855 opened_path = NULL;
856 }
857 }
858 if (!is_db_lock) {
859 efree(lock_name);
860 }
861 if (!connection->info->lock.fp) {
862 /* stream operation already wrote an error message */
863 efree(resource_key);
864 zval_ptr_dtor(return_value);
865 RETURN_FALSE;
866 }
867 if (!php_stream_supports_lock(connection->info->lock.fp)) {
868 error = "Stream does not support locking";
869 }
870 if (php_stream_lock(connection->info->lock.fp, lock_mode)) {
871 error = "Unable to establish lock"; /* force failure exit */
872 }
873 }
874
875 /* centralised open stream for builtin */
876 if (!error && (hptr->flags&DBA_STREAM_OPEN)==DBA_STREAM_OPEN) {
877 if (connection->info->lock.fp && is_db_lock) {
878 connection->info->fp = connection->info->lock.fp; /* use the same stream for locking and database access */
879 } else {
880 connection->info->fp = php_stream_open_wrapper(ZSTR_VAL(connection->info->path), file_mode, STREAM_MUST_SEEK|REPORT_ERRORS|IGNORE_PATH|persistent_flag, NULL);
881 }
882 if (!connection->info->fp) {
883 /* stream operation already wrote an error message */
884 efree(resource_key);
885 zval_ptr_dtor(return_value);
886 RETURN_FALSE;
887 }
888 if (hptr->flags & (DBA_NO_APPEND|DBA_CAST_AS_FD)) {
889 /* Needed because some systems do not allow to write to the original
890 * file contents with O_APPEND being set.
891 */
892 if (SUCCESS != php_stream_cast(connection->info->fp, PHP_STREAM_AS_FD, (void*)&connection->info->fd, 1)) {
893 php_error_docref(NULL, E_WARNING, "Could not cast stream");
894 efree(resource_key);
895 zval_ptr_dtor(return_value);
896 RETURN_FALSE;
897 #ifdef F_SETFL
898 } else if (modenr == DBA_CREAT) {
899 int flags = fcntl(connection->info->fd, F_GETFL);
900 fcntl(connection->info->fd, F_SETFL, flags & ~O_APPEND);
901 #elif defined(PHP_WIN32)
902 } else if (modenr == DBA_CREAT && need_creation && !restarted) {
903 if (connection->info->lock.fp != NULL) {
904 php_stream_free(connection->info->lock.fp, persistent ? PHP_STREAM_FREE_CLOSE_PERSISTENT : PHP_STREAM_FREE_CLOSE);
905 }
906 if (connection->info->fp != connection->info->lock.fp) {
907 php_stream_free(connection->info->fp, persistent ? PHP_STREAM_FREE_CLOSE_PERSISTENT : PHP_STREAM_FREE_CLOSE);
908 }
909 connection->info->fp = NULL;
910 connection->info->lock.fp = NULL;
911 connection->info->fd = -1;
912
913 lock_file_mode = "r+b";
914
915 restarted = 1;
916 goto restart;
917 #endif
918 }
919 }
920 }
921
922 if (error || hptr->open(connection->info, &error) == FAILURE) {
923 if (EXPECTED(!EG(exception))) {
924 if (error) {
925 php_error_docref(NULL, E_WARNING, "Driver initialization failed for handler: %s: %s", hptr->name, error);
926 } else {
927 php_error_docref(NULL, E_WARNING, "Driver initialization failed for handler: %s", hptr->name);
928 }
929 }
930 efree(resource_key);
931 zval_ptr_dtor(return_value);
932 RETURN_FALSE;
933 }
934
935 connection->info->hnd = hptr;
936
937 if (persistent) {
938 if (zend_register_persistent_resource(resource_key, resource_key_len, connection->info, le_pdb) == NULL) {
939 php_error_docref(NULL, E_WARNING, "Could not register persistent resource");
940 efree(resource_key);
941 zval_ptr_dtor(return_value);
942 RETURN_FALSE;
943 }
944 }
945
946 zend_hash_add_new(&DBA_G(connections), connection->hash, return_value);
947 efree(resource_key);
948 }
949 /* }}} */
950
951 /* {{{ Opens path using the specified handler in mode persistently */
PHP_FUNCTION(dba_popen)952 PHP_FUNCTION(dba_popen)
953 {
954 php_dba_open(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
955 }
956 /* }}} */
957
958 /* {{{ Opens path using the specified handler in mode*/
PHP_FUNCTION(dba_open)959 PHP_FUNCTION(dba_open)
960 {
961 php_dba_open(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
962 }
963 /* }}} */
964
965 /* {{{ Closes database */
PHP_FUNCTION(dba_close)966 PHP_FUNCTION(dba_close)
967 {
968 zval *id;
969 dba_connection *connection = NULL;
970
971 if (zend_parse_parameters(ZEND_NUM_ARGS(), "O", &id, dba_connection_ce) == FAILURE) {
972 RETURN_THROWS();
973 }
974
975 connection = Z_DBA_CONNECTION_P(id);
976 CHECK_DBA_CONNECTION(connection->info);
977
978 bool persistent = connection->info->flags & DBA_PERSISTENT;
979
980 dba_close_connection(connection);
981
982 if (persistent) {
983 zend_hash_apply_with_argument(&EG(persistent_list), remove_pconnection_from_list, (void *) connection->info);
984 }
985 }
986 /* }}} */
987
988 /* {{{ Checks, if the specified key exists */
PHP_FUNCTION(dba_exists)989 PHP_FUNCTION(dba_exists)
990 {
991 zval *id;
992 dba_info *info = NULL;
993 HashTable *key_ht = NULL;
994 zend_string *key_str = NULL;
995
996 ZEND_PARSE_PARAMETERS_START(2, 2)
997 Z_PARAM_ARRAY_HT_OR_STR(key_ht, key_str)
998 Z_PARAM_OBJECT_OF_CLASS(id, dba_connection_ce);
999 ZEND_PARSE_PARAMETERS_END();
1000
1001 info = Z_DBA_INFO_P(id);
1002 CHECK_DBA_CONNECTION(info);
1003
1004 if (key_ht) {
1005 key_str = php_dba_make_key(key_ht);
1006 if (!key_str) {
1007 // TODO ValueError?
1008 RETURN_FALSE;
1009 }
1010 }
1011
1012 RETVAL_BOOL(info->hnd->exists(info, key_str) == SUCCESS);
1013 DBA_RELEASE_HT_KEY_CREATION();
1014 }
1015 /* }}} */
1016
1017 /* {{{ Fetches the data associated with key */
PHP_FUNCTION(dba_fetch)1018 PHP_FUNCTION(dba_fetch)
1019 {
1020 zval *id;
1021 dba_info *info = NULL;
1022 HashTable *key_ht = NULL;
1023 zend_string *key_str = NULL;
1024 zend_long skip = 0;
1025
1026 /* Check for legacy signature */
1027 if (ZEND_NUM_ARGS() == 3) {
1028 ZEND_PARSE_PARAMETERS_START_EX(ZEND_PARSE_PARAMS_QUIET, 3, 3)
1029 Z_PARAM_ARRAY_HT_OR_STR(key_ht, key_str)
1030 Z_PARAM_LONG(skip)
1031 Z_PARAM_OBJECT_OF_CLASS(id, dba_connection_ce);
1032 ZEND_PARSE_PARAMETERS_END_EX(goto standard;);
1033
1034 zend_error(E_DEPRECATED, "Calling dba_fetch() with $dba at the 3rd parameter is deprecated");
1035 if (UNEXPECTED(EG(exception))) {
1036 RETURN_THROWS();
1037 }
1038 } else {
1039 standard:
1040 ZEND_PARSE_PARAMETERS_START(2, 3)
1041 Z_PARAM_ARRAY_HT_OR_STR(key_ht, key_str)
1042 Z_PARAM_OBJECT_OF_CLASS(id, dba_connection_ce);
1043 Z_PARAM_OPTIONAL
1044 Z_PARAM_LONG(skip)
1045 ZEND_PARSE_PARAMETERS_END();
1046 }
1047
1048 info = Z_DBA_INFO_P(id);
1049 CHECK_DBA_CONNECTION(info);
1050
1051 if (key_ht) {
1052 key_str = php_dba_make_key(key_ht);
1053 if (!key_str) {
1054 // TODO ValueError?
1055 RETURN_FALSE;
1056 }
1057 }
1058
1059 if (skip != 0) {
1060 if (!strcmp(info->hnd->name, "cdb")) {
1061 // TODO ValueError?
1062 if (skip < 0) {
1063 php_error_docref(NULL, E_NOTICE, "Handler %s accepts only skip values greater than or equal to zero, using skip=0", info->hnd->name);
1064 skip = 0;
1065 }
1066 } else if (!strcmp(info->hnd->name, "inifile")) {
1067 /* "-1" is comparable to 0 but allows a non restrictive
1068 * access which is faster. For example 'inifile' uses this
1069 * to allow faster access when the key was already found
1070 * using firstkey/nextkey. However explicitly setting the
1071 * value to 0 ensures the first value.
1072 */
1073 if (skip < -1) {
1074 // TODO ValueError?
1075 php_error_docref(NULL, E_NOTICE, "Handler %s accepts only skip value -1 and greater, using skip=0", info->hnd->name);
1076 skip = 0;
1077 }
1078 } else {
1079 php_error_docref(NULL, E_NOTICE, "Handler %s does not support optional skip parameter, the value will be ignored", info->hnd->name);
1080 skip = 0;
1081 }
1082 }
1083
1084 zend_string *val;
1085 if ((val = info->hnd->fetch(info, key_str, skip)) == NULL) {
1086 DBA_RELEASE_HT_KEY_CREATION();
1087 RETURN_FALSE;
1088 }
1089 DBA_RELEASE_HT_KEY_CREATION();
1090 RETURN_STR(val);
1091 }
1092 /* }}} */
1093
1094 /* {{{ Splits an inifile key into an array of the form array(0=>group,1=>value_name) but returns false if input is false or null */
PHP_FUNCTION(dba_key_split)1095 PHP_FUNCTION(dba_key_split)
1096 {
1097 zval *zkey;
1098 char *key, *name;
1099 size_t key_len;
1100
1101 if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, ZEND_NUM_ARGS(), "z", &zkey) == SUCCESS) {
1102 if (Z_TYPE_P(zkey) == IS_NULL || (Z_TYPE_P(zkey) == IS_FALSE)) {
1103 php_error_docref(NULL, E_DEPRECATED, "Passing false or null is deprecated since 8.4");
1104 RETURN_FALSE;
1105 }
1106 }
1107 if (zend_parse_parameters(ZEND_NUM_ARGS(), "s", &key, &key_len) == FAILURE) {
1108 RETURN_THROWS();
1109 }
1110 array_init(return_value);
1111 if (key[0] == '[' && (name = strchr(key, ']')) != NULL) {
1112 add_next_index_stringl(return_value, key+1, name - (key + 1));
1113 add_next_index_stringl(return_value, name+1, key_len - (name - key + 1));
1114 } else {
1115 add_next_index_stringl(return_value, "", 0);
1116 add_next_index_stringl(return_value, key, key_len);
1117 }
1118 }
1119 /* }}} */
1120
1121 /* {{{ Resets the internal key pointer and returns the first key */
PHP_FUNCTION(dba_firstkey)1122 PHP_FUNCTION(dba_firstkey)
1123 {
1124 zval *id;
1125 dba_info *info = NULL;
1126
1127 if (zend_parse_parameters(ZEND_NUM_ARGS(), "O", &id, dba_connection_ce) == FAILURE) {
1128 RETURN_THROWS();
1129 }
1130
1131 info = Z_DBA_INFO_P(id);
1132 CHECK_DBA_CONNECTION(info);
1133
1134 zend_string *fkey = info->hnd->firstkey(info);
1135
1136 if (fkey) {
1137 RETURN_STR(fkey);
1138 }
1139
1140 RETURN_FALSE;
1141 }
1142 /* }}} */
1143
1144 /* {{{ Returns the next key */
PHP_FUNCTION(dba_nextkey)1145 PHP_FUNCTION(dba_nextkey)
1146 {
1147 zval *id;
1148 dba_info *info = NULL;
1149
1150 if (zend_parse_parameters(ZEND_NUM_ARGS(), "O", &id, dba_connection_ce) == FAILURE) {
1151 RETURN_THROWS();
1152 }
1153
1154 info = Z_DBA_INFO_P(id);
1155 CHECK_DBA_CONNECTION(info);
1156
1157 zend_string *nkey = info->hnd->nextkey(info);
1158
1159 if (nkey) {
1160 RETURN_STR(nkey);
1161 }
1162
1163 RETURN_FALSE;
1164 }
1165 /* }}} */
1166
1167 /* {{{ Deletes the entry associated with key
1168 If inifile: remove all other key lines */
PHP_FUNCTION(dba_delete)1169 PHP_FUNCTION(dba_delete)
1170 {
1171 zval *id;
1172 dba_info *info = NULL;
1173 HashTable *key_ht = NULL;
1174 zend_string *key_str = NULL;
1175
1176 ZEND_PARSE_PARAMETERS_START(2, 2)
1177 Z_PARAM_ARRAY_HT_OR_STR(key_ht, key_str)
1178 Z_PARAM_OBJECT_OF_CLASS(id, dba_connection_ce);
1179 ZEND_PARSE_PARAMETERS_END();
1180
1181 info = Z_DBA_INFO_P(id);
1182 CHECK_DBA_CONNECTION(info);
1183 DBA_WRITE_CHECK(info);
1184
1185 if (key_ht) {
1186 key_str = php_dba_make_key(key_ht);
1187 if (!key_str) {
1188 // TODO ValueError?
1189 RETURN_FALSE;
1190 }
1191 }
1192
1193 RETVAL_BOOL(info->hnd->delete(info, key_str) == SUCCESS);
1194 DBA_RELEASE_HT_KEY_CREATION();
1195 }
1196 /* }}} */
1197
1198 /* {{{ If not inifile: Insert value as key, return false, if key exists already
1199 If inifile: Add vakue as key (next instance of key) */
PHP_FUNCTION(dba_insert)1200 PHP_FUNCTION(dba_insert)
1201 {
1202 php_dba_update(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
1203 }
1204 /* }}} */
1205
1206 /* {{{ Inserts value as key, replaces key, if key exists already
1207 If inifile: remove all other key lines */
PHP_FUNCTION(dba_replace)1208 PHP_FUNCTION(dba_replace)
1209 {
1210 php_dba_update(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
1211 }
1212 /* }}} */
1213
1214 /* {{{ Optimizes (e.g. clean up, vacuum) database */
PHP_FUNCTION(dba_optimize)1215 PHP_FUNCTION(dba_optimize)
1216 {
1217 zval *id;
1218 dba_info *info = NULL;
1219
1220 if (zend_parse_parameters(ZEND_NUM_ARGS(), "O", &id, dba_connection_ce) == FAILURE) {
1221 RETURN_THROWS();
1222 }
1223
1224 info = Z_DBA_INFO_P(id);
1225 CHECK_DBA_CONNECTION(info);
1226 DBA_WRITE_CHECK(info);
1227
1228 if (info->hnd->optimize(info) == SUCCESS) {
1229 RETURN_TRUE;
1230 }
1231
1232 RETURN_FALSE;
1233 }
1234 /* }}} */
1235
1236 /* {{{ Synchronizes database */
PHP_FUNCTION(dba_sync)1237 PHP_FUNCTION(dba_sync)
1238 {
1239 zval *id;
1240 dba_info *info = NULL;
1241
1242 if (zend_parse_parameters(ZEND_NUM_ARGS(), "O", &id, dba_connection_ce) == FAILURE) {
1243 RETURN_THROWS();
1244 }
1245
1246 info = Z_DBA_INFO_P(id);
1247 CHECK_DBA_CONNECTION(info);
1248
1249 if (info->hnd->sync(info) == SUCCESS) {
1250 RETURN_TRUE;
1251 }
1252
1253 RETURN_FALSE;
1254 }
1255 /* }}} */
1256
1257 /* {{{ List configured database handlers */
PHP_FUNCTION(dba_handlers)1258 PHP_FUNCTION(dba_handlers)
1259 {
1260 const dba_handler *hptr;
1261 bool full_info = 0;
1262
1263 if (zend_parse_parameters(ZEND_NUM_ARGS(), "|b", &full_info) == FAILURE) {
1264 RETURN_THROWS();
1265 }
1266
1267 array_init(return_value);
1268
1269 for(hptr = handler; hptr->name; hptr++) {
1270 if (full_info) {
1271 // TODO: avoid reallocation ???
1272 char *str = hptr->info(hptr, NULL);
1273 add_assoc_string(return_value, hptr->name, str);
1274 efree(str);
1275 } else {
1276 add_next_index_string(return_value, hptr->name);
1277 }
1278 }
1279 }
1280 /* }}} */
1281
1282 /* {{{ List opened databases */
PHP_FUNCTION(dba_list)1283 PHP_FUNCTION(dba_list)
1284 {
1285 if (zend_parse_parameters_none() == FAILURE) {
1286 RETURN_THROWS();
1287 }
1288
1289 array_init(return_value);
1290
1291 zval *zv;
1292 ZEND_HASH_MAP_FOREACH_VAL(&DBA_G(connections), zv) {
1293 dba_info *info = Z_DBA_INFO_P(zv);
1294 if (info) {
1295 add_next_index_str(return_value, zend_string_copy(info->path));
1296 }
1297 } ZEND_HASH_FOREACH_END();
1298 }
1299 /* }}} */
1300
1301 #endif /* HAVE_DBA */
1302
