1: /*
2: +----------------------------------------------------------------------+
3: | PHP Version 5 |
4: +----------------------------------------------------------------------+
5: | Copyright (c) 1997-2014 The PHP Group |
6: +----------------------------------------------------------------------+
7: | This source file is subject to version 3.01 of the PHP license, |
8: | that is bundled with this package in the file LICENSE, and is |
9: | available through the world-wide-web at the following url: |
10: | http://www.php.net/license/3_01.txt |
11: | If you did not receive a copy of the PHP license and are unable to |
12: | obtain it through the world-wide-web, please send a note to |
13: | license@php.net so we can mail you a copy immediately. |
14: +----------------------------------------------------------------------+
15: | Authors: Rasmus Lerdorf <rasmus@php.net> |
16: | Derick Rethans <derick@php.net> |
17: | Pierre-A. Joye <pierre@php.net> |
18: | Ilia Alshanetsky <iliaa@php.net> |
19: +----------------------------------------------------------------------+
20: */
21:
22: /* $Id: filter.c,v 1.1.1.5 2014/06/15 20:03:48 misho Exp $ */
23:
24: #ifdef HAVE_CONFIG_H
25: #include "config.h"
26: #endif
27:
28: #include "php_filter.h"
29:
30: ZEND_DECLARE_MODULE_GLOBALS(filter)
31:
32: #include "filter_private.h"
33:
34: typedef struct filter_list_entry {
35: const char *name;
36: int id;
37: void (*function)(PHP_INPUT_FILTER_PARAM_DECL);
38: } filter_list_entry;
39:
40: /* {{{ filter_list */
41: static const filter_list_entry filter_list[] = {
42: { "int", FILTER_VALIDATE_INT, php_filter_int },
43: { "boolean", FILTER_VALIDATE_BOOLEAN, php_filter_boolean },
44: { "float", FILTER_VALIDATE_FLOAT, php_filter_float },
45:
46: { "validate_regexp", FILTER_VALIDATE_REGEXP, php_filter_validate_regexp },
47: { "validate_url", FILTER_VALIDATE_URL, php_filter_validate_url },
48: { "validate_email", FILTER_VALIDATE_EMAIL, php_filter_validate_email },
49: { "validate_ip", FILTER_VALIDATE_IP, php_filter_validate_ip },
50:
51: { "string", FILTER_SANITIZE_STRING, php_filter_string },
52: { "stripped", FILTER_SANITIZE_STRING, php_filter_string },
53: { "encoded", FILTER_SANITIZE_ENCODED, php_filter_encoded },
54: { "special_chars", FILTER_SANITIZE_SPECIAL_CHARS, php_filter_special_chars },
55: { "full_special_chars", FILTER_SANITIZE_FULL_SPECIAL_CHARS, php_filter_full_special_chars },
56: { "unsafe_raw", FILTER_UNSAFE_RAW, php_filter_unsafe_raw },
57: { "email", FILTER_SANITIZE_EMAIL, php_filter_email },
58: { "url", FILTER_SANITIZE_URL, php_filter_url },
59: { "number_int", FILTER_SANITIZE_NUMBER_INT, php_filter_number_int },
60: { "number_float", FILTER_SANITIZE_NUMBER_FLOAT, php_filter_number_float },
61: { "magic_quotes", FILTER_SANITIZE_MAGIC_QUOTES, php_filter_magic_quotes },
62:
63: { "callback", FILTER_CALLBACK, php_filter_callback },
64: };
65: /* }}} */
66:
67: #ifndef PARSE_ENV
68: #define PARSE_ENV 4
69: #endif
70:
71: #ifndef PARSE_SERVER
72: #define PARSE_SERVER 5
73: #endif
74:
75: #ifndef PARSE_SESSION
76: #define PARSE_SESSION 6
77: #endif
78:
79: static unsigned int php_sapi_filter(int arg, char *var, char **val, unsigned int val_len, unsigned int *new_val_len TSRMLS_DC);
80: static unsigned int php_sapi_filter_init(TSRMLS_D);
81:
82: /* {{{ arginfo */
83: ZEND_BEGIN_ARG_INFO_EX(arginfo_filter_input, 0, 0, 2)
84: ZEND_ARG_INFO(0, type)
85: ZEND_ARG_INFO(0, variable_name)
86: ZEND_ARG_INFO(0, filter)
87: ZEND_ARG_INFO(0, options)
88: ZEND_END_ARG_INFO()
89:
90: ZEND_BEGIN_ARG_INFO_EX(arginfo_filter_var, 0, 0, 1)
91: ZEND_ARG_INFO(0, variable)
92: ZEND_ARG_INFO(0, filter)
93: ZEND_ARG_INFO(0, options)
94: ZEND_END_ARG_INFO()
95:
96: ZEND_BEGIN_ARG_INFO_EX(arginfo_filter_input_array, 0, 0, 1)
97: ZEND_ARG_INFO(0, type)
98: ZEND_ARG_INFO(0, definition)
99: ZEND_ARG_INFO(0, add_empty)
100: ZEND_END_ARG_INFO()
101:
102: ZEND_BEGIN_ARG_INFO_EX(arginfo_filter_var_array, 0, 0, 1)
103: ZEND_ARG_INFO(0, data)
104: ZEND_ARG_INFO(0, definition)
105: ZEND_ARG_INFO(0, add_empty)
106: ZEND_END_ARG_INFO()
107:
108: ZEND_BEGIN_ARG_INFO(arginfo_filter_list, 0)
109: ZEND_END_ARG_INFO()
110:
111: ZEND_BEGIN_ARG_INFO_EX(arginfo_filter_has_var, 0, 0, 2)
112: ZEND_ARG_INFO(0, type)
113: ZEND_ARG_INFO(0, variable_name)
114: ZEND_END_ARG_INFO()
115:
116: ZEND_BEGIN_ARG_INFO_EX(arginfo_filter_id, 0, 0, 1)
117: ZEND_ARG_INFO(0, filtername)
118: ZEND_END_ARG_INFO()
119: /* }}} */
120:
121: /* {{{ filter_functions[]
122: */
123: static const zend_function_entry filter_functions[] = {
124: PHP_FE(filter_input, arginfo_filter_input)
125: PHP_FE(filter_var, arginfo_filter_var)
126: PHP_FE(filter_input_array, arginfo_filter_input_array)
127: PHP_FE(filter_var_array, arginfo_filter_var_array)
128: PHP_FE(filter_list, arginfo_filter_list)
129: PHP_FE(filter_has_var, arginfo_filter_has_var)
130: PHP_FE(filter_id, arginfo_filter_id)
131: PHP_FE_END
132: };
133: /* }}} */
134:
135: /* {{{ filter_module_entry
136: */
137: zend_module_entry filter_module_entry = {
138: #if ZEND_MODULE_API_NO >= 20010901
139: STANDARD_MODULE_HEADER,
140: #endif
141: "filter",
142: filter_functions,
143: PHP_MINIT(filter),
144: PHP_MSHUTDOWN(filter),
145: NULL,
146: PHP_RSHUTDOWN(filter),
147: PHP_MINFO(filter),
148: "0.11.0",
149: STANDARD_MODULE_PROPERTIES
150: };
151: /* }}} */
152:
153: #ifdef COMPILE_DL_FILTER
154: ZEND_GET_MODULE(filter)
155: #endif
156:
157: static PHP_INI_MH(UpdateDefaultFilter) /* {{{ */
158: {
159: int i, size = sizeof(filter_list) / sizeof(filter_list_entry);
160:
161: for (i = 0; i < size; ++i) {
162: if ((strcasecmp(new_value, filter_list[i].name) == 0)) {
163: IF_G(default_filter) = filter_list[i].id;
164: return SUCCESS;
165: }
166: }
167: /* Fallback to the default filter */
168: IF_G(default_filter) = FILTER_DEFAULT;
169: return SUCCESS;
170: }
171: /* }}} */
172:
173: /* {{{ PHP_INI
174: */
175: static PHP_INI_MH(OnUpdateFlags)
176: {
177: if (!new_value) {
178: IF_G(default_filter_flags) = FILTER_FLAG_NO_ENCODE_QUOTES;
179: } else {
180: IF_G(default_filter_flags) = atoi(new_value);
181: }
182: return SUCCESS;
183: }
184:
185: PHP_INI_BEGIN()
186: STD_PHP_INI_ENTRY("filter.default", "unsafe_raw", PHP_INI_SYSTEM|PHP_INI_PERDIR, UpdateDefaultFilter, default_filter, zend_filter_globals, filter_globals)
187: PHP_INI_ENTRY("filter.default_flags", NULL, PHP_INI_SYSTEM|PHP_INI_PERDIR, OnUpdateFlags)
188: PHP_INI_END()
189: /* }}} */
190:
191: static void php_filter_init_globals(zend_filter_globals *filter_globals) /* {{{ */
192: {
193: filter_globals->post_array = NULL;
194: filter_globals->get_array = NULL;
195: filter_globals->cookie_array = NULL;
196: filter_globals->env_array = NULL;
197: filter_globals->server_array = NULL;
198: filter_globals->session_array = NULL;
199: filter_globals->default_filter = FILTER_DEFAULT;
200: }
201: /* }}} */
202:
203: #define PARSE_REQUEST 99
204:
205: /* {{{ PHP_MINIT_FUNCTION
206: */
207: PHP_MINIT_FUNCTION(filter)
208: {
209: ZEND_INIT_MODULE_GLOBALS(filter, php_filter_init_globals, NULL);
210:
211: REGISTER_INI_ENTRIES();
212:
213: REGISTER_LONG_CONSTANT("INPUT_POST", PARSE_POST, CONST_CS | CONST_PERSISTENT);
214: REGISTER_LONG_CONSTANT("INPUT_GET", PARSE_GET, CONST_CS | CONST_PERSISTENT);
215: REGISTER_LONG_CONSTANT("INPUT_COOKIE", PARSE_COOKIE, CONST_CS | CONST_PERSISTENT);
216: REGISTER_LONG_CONSTANT("INPUT_ENV", PARSE_ENV, CONST_CS | CONST_PERSISTENT);
217: REGISTER_LONG_CONSTANT("INPUT_SERVER", PARSE_SERVER, CONST_CS | CONST_PERSISTENT);
218: REGISTER_LONG_CONSTANT("INPUT_SESSION", PARSE_SESSION, CONST_CS | CONST_PERSISTENT);
219: REGISTER_LONG_CONSTANT("INPUT_REQUEST", PARSE_REQUEST, CONST_CS | CONST_PERSISTENT);
220:
221: REGISTER_LONG_CONSTANT("FILTER_FLAG_NONE", FILTER_FLAG_NONE, CONST_CS | CONST_PERSISTENT);
222:
223: REGISTER_LONG_CONSTANT("FILTER_REQUIRE_SCALAR", FILTER_REQUIRE_SCALAR, CONST_CS | CONST_PERSISTENT);
224: REGISTER_LONG_CONSTANT("FILTER_REQUIRE_ARRAY", FILTER_REQUIRE_ARRAY, CONST_CS | CONST_PERSISTENT);
225: REGISTER_LONG_CONSTANT("FILTER_FORCE_ARRAY", FILTER_FORCE_ARRAY, CONST_CS | CONST_PERSISTENT);
226: REGISTER_LONG_CONSTANT("FILTER_NULL_ON_FAILURE", FILTER_NULL_ON_FAILURE, CONST_CS | CONST_PERSISTENT);
227:
228: REGISTER_LONG_CONSTANT("FILTER_VALIDATE_INT", FILTER_VALIDATE_INT, CONST_CS | CONST_PERSISTENT);
229: REGISTER_LONG_CONSTANT("FILTER_VALIDATE_BOOLEAN", FILTER_VALIDATE_BOOLEAN, CONST_CS | CONST_PERSISTENT);
230: REGISTER_LONG_CONSTANT("FILTER_VALIDATE_FLOAT", FILTER_VALIDATE_FLOAT, CONST_CS | CONST_PERSISTENT);
231:
232: REGISTER_LONG_CONSTANT("FILTER_VALIDATE_REGEXP", FILTER_VALIDATE_REGEXP, CONST_CS | CONST_PERSISTENT);
233: REGISTER_LONG_CONSTANT("FILTER_VALIDATE_URL", FILTER_VALIDATE_URL, CONST_CS | CONST_PERSISTENT);
234: REGISTER_LONG_CONSTANT("FILTER_VALIDATE_EMAIL", FILTER_VALIDATE_EMAIL, CONST_CS | CONST_PERSISTENT);
235: REGISTER_LONG_CONSTANT("FILTER_VALIDATE_IP", FILTER_VALIDATE_IP, CONST_CS | CONST_PERSISTENT);
236:
237: REGISTER_LONG_CONSTANT("FILTER_DEFAULT", FILTER_DEFAULT, CONST_CS | CONST_PERSISTENT);
238: REGISTER_LONG_CONSTANT("FILTER_UNSAFE_RAW", FILTER_UNSAFE_RAW, CONST_CS | CONST_PERSISTENT);
239:
240: REGISTER_LONG_CONSTANT("FILTER_SANITIZE_STRING", FILTER_SANITIZE_STRING, CONST_CS | CONST_PERSISTENT);
241: REGISTER_LONG_CONSTANT("FILTER_SANITIZE_STRIPPED", FILTER_SANITIZE_STRING, CONST_CS | CONST_PERSISTENT);
242: REGISTER_LONG_CONSTANT("FILTER_SANITIZE_ENCODED", FILTER_SANITIZE_ENCODED, CONST_CS | CONST_PERSISTENT);
243: REGISTER_LONG_CONSTANT("FILTER_SANITIZE_SPECIAL_CHARS", FILTER_SANITIZE_SPECIAL_CHARS, CONST_CS | CONST_PERSISTENT);
244: REGISTER_LONG_CONSTANT("FILTER_SANITIZE_FULL_SPECIAL_CHARS", FILTER_SANITIZE_FULL_SPECIAL_CHARS, CONST_CS | CONST_PERSISTENT);
245: REGISTER_LONG_CONSTANT("FILTER_SANITIZE_EMAIL", FILTER_SANITIZE_EMAIL, CONST_CS | CONST_PERSISTENT);
246: REGISTER_LONG_CONSTANT("FILTER_SANITIZE_URL", FILTER_SANITIZE_URL, CONST_CS | CONST_PERSISTENT);
247: REGISTER_LONG_CONSTANT("FILTER_SANITIZE_NUMBER_INT", FILTER_SANITIZE_NUMBER_INT, CONST_CS | CONST_PERSISTENT);
248: REGISTER_LONG_CONSTANT("FILTER_SANITIZE_NUMBER_FLOAT", FILTER_SANITIZE_NUMBER_FLOAT, CONST_CS | CONST_PERSISTENT);
249: REGISTER_LONG_CONSTANT("FILTER_SANITIZE_MAGIC_QUOTES", FILTER_SANITIZE_MAGIC_QUOTES, CONST_CS | CONST_PERSISTENT);
250:
251: REGISTER_LONG_CONSTANT("FILTER_CALLBACK", FILTER_CALLBACK, CONST_CS | CONST_PERSISTENT);
252:
253: REGISTER_LONG_CONSTANT("FILTER_FLAG_ALLOW_OCTAL", FILTER_FLAG_ALLOW_OCTAL, CONST_CS | CONST_PERSISTENT);
254: REGISTER_LONG_CONSTANT("FILTER_FLAG_ALLOW_HEX", FILTER_FLAG_ALLOW_HEX, CONST_CS | CONST_PERSISTENT);
255:
256: REGISTER_LONG_CONSTANT("FILTER_FLAG_STRIP_LOW", FILTER_FLAG_STRIP_LOW, CONST_CS | CONST_PERSISTENT);
257: REGISTER_LONG_CONSTANT("FILTER_FLAG_STRIP_HIGH", FILTER_FLAG_STRIP_HIGH, CONST_CS | CONST_PERSISTENT);
258: REGISTER_LONG_CONSTANT("FILTER_FLAG_STRIP_BACKTICK", FILTER_FLAG_STRIP_BACKTICK, CONST_CS | CONST_PERSISTENT);
259: REGISTER_LONG_CONSTANT("FILTER_FLAG_ENCODE_LOW", FILTER_FLAG_ENCODE_LOW, CONST_CS | CONST_PERSISTENT);
260: REGISTER_LONG_CONSTANT("FILTER_FLAG_ENCODE_HIGH", FILTER_FLAG_ENCODE_HIGH, CONST_CS | CONST_PERSISTENT);
261: REGISTER_LONG_CONSTANT("FILTER_FLAG_ENCODE_AMP", FILTER_FLAG_ENCODE_AMP, CONST_CS | CONST_PERSISTENT);
262: REGISTER_LONG_CONSTANT("FILTER_FLAG_NO_ENCODE_QUOTES", FILTER_FLAG_NO_ENCODE_QUOTES, CONST_CS | CONST_PERSISTENT);
263: REGISTER_LONG_CONSTANT("FILTER_FLAG_EMPTY_STRING_NULL", FILTER_FLAG_EMPTY_STRING_NULL, CONST_CS | CONST_PERSISTENT);
264:
265: REGISTER_LONG_CONSTANT("FILTER_FLAG_ALLOW_FRACTION", FILTER_FLAG_ALLOW_FRACTION, CONST_CS | CONST_PERSISTENT);
266: REGISTER_LONG_CONSTANT("FILTER_FLAG_ALLOW_THOUSAND", FILTER_FLAG_ALLOW_THOUSAND, CONST_CS | CONST_PERSISTENT);
267: REGISTER_LONG_CONSTANT("FILTER_FLAG_ALLOW_SCIENTIFIC", FILTER_FLAG_ALLOW_SCIENTIFIC, CONST_CS | CONST_PERSISTENT);
268:
269: REGISTER_LONG_CONSTANT("FILTER_FLAG_SCHEME_REQUIRED", FILTER_FLAG_SCHEME_REQUIRED, CONST_CS | CONST_PERSISTENT);
270: REGISTER_LONG_CONSTANT("FILTER_FLAG_HOST_REQUIRED", FILTER_FLAG_HOST_REQUIRED, CONST_CS | CONST_PERSISTENT);
271: REGISTER_LONG_CONSTANT("FILTER_FLAG_PATH_REQUIRED", FILTER_FLAG_PATH_REQUIRED, CONST_CS | CONST_PERSISTENT);
272: REGISTER_LONG_CONSTANT("FILTER_FLAG_QUERY_REQUIRED", FILTER_FLAG_QUERY_REQUIRED, CONST_CS | CONST_PERSISTENT);
273:
274: REGISTER_LONG_CONSTANT("FILTER_FLAG_IPV4", FILTER_FLAG_IPV4, CONST_CS | CONST_PERSISTENT);
275: REGISTER_LONG_CONSTANT("FILTER_FLAG_IPV6", FILTER_FLAG_IPV6, CONST_CS | CONST_PERSISTENT);
276: REGISTER_LONG_CONSTANT("FILTER_FLAG_NO_RES_RANGE", FILTER_FLAG_NO_RES_RANGE, CONST_CS | CONST_PERSISTENT);
277: REGISTER_LONG_CONSTANT("FILTER_FLAG_NO_PRIV_RANGE", FILTER_FLAG_NO_PRIV_RANGE, CONST_CS | CONST_PERSISTENT);
278:
279: sapi_register_input_filter(php_sapi_filter, php_sapi_filter_init TSRMLS_CC);
280:
281: return SUCCESS;
282: }
283: /* }}} */
284:
285: /* {{{ PHP_MSHUTDOWN_FUNCTION
286: */
287: PHP_MSHUTDOWN_FUNCTION(filter)
288: {
289: UNREGISTER_INI_ENTRIES();
290:
291: return SUCCESS;
292: }
293: /* }}} */
294:
295: /* {{{ PHP_RSHUTDOWN_FUNCTION
296: */
297: #define VAR_ARRAY_COPY_DTOR(a) \
298: if (IF_G(a)) { \
299: zval_ptr_dtor(&IF_G(a)); \
300: IF_G(a) = NULL; \
301: }
302:
303: PHP_RSHUTDOWN_FUNCTION(filter)
304: {
305: VAR_ARRAY_COPY_DTOR(get_array)
306: VAR_ARRAY_COPY_DTOR(post_array)
307: VAR_ARRAY_COPY_DTOR(cookie_array)
308: VAR_ARRAY_COPY_DTOR(server_array)
309: VAR_ARRAY_COPY_DTOR(env_array)
310: VAR_ARRAY_COPY_DTOR(session_array)
311: return SUCCESS;
312: }
313: /* }}} */
314:
315: /* {{{ PHP_MINFO_FUNCTION
316: */
317: PHP_MINFO_FUNCTION(filter)
318: {
319: php_info_print_table_start();
320: php_info_print_table_row( 2, "Input Validation and Filtering", "enabled" );
321: php_info_print_table_row( 2, "Revision", "$Id: filter.c,v 1.1.1.5 2014/06/15 20:03:48 misho Exp $");
322: php_info_print_table_end();
323:
324: DISPLAY_INI_ENTRIES();
325: }
326: /* }}} */
327:
328: static filter_list_entry php_find_filter(long id) /* {{{ */
329: {
330: int i, size = sizeof(filter_list) / sizeof(filter_list_entry);
331:
332: for (i = 0; i < size; ++i) {
333: if (filter_list[i].id == id) {
334: return filter_list[i];
335: }
336: }
337: /* Fallback to "string" filter */
338: for (i = 0; i < size; ++i) {
339: if (filter_list[i].id == FILTER_DEFAULT) {
340: return filter_list[i];
341: }
342: }
343: /* To shut up GCC */
344: return filter_list[0];
345: }
346: /* }}} */
347:
348: static unsigned int php_sapi_filter_init(TSRMLS_D)
349: {
350: IF_G(get_array) = NULL;
351: IF_G(post_array) = NULL;
352: IF_G(cookie_array) = NULL;
353: IF_G(server_array) = NULL;
354: IF_G(env_array) = NULL;
355: IF_G(session_array) = NULL;
356: return SUCCESS;
357: }
358:
359: static void php_zval_filter(zval **value, long filter, long flags, zval *options, char* charset, zend_bool copy TSRMLS_DC) /* {{{ */
360: {
361: filter_list_entry filter_func;
362:
363: filter_func = php_find_filter(filter);
364:
365: if (!filter_func.id) {
366: /* Find default filter */
367: filter_func = php_find_filter(FILTER_DEFAULT);
368: }
369:
370: if (copy) {
371: SEPARATE_ZVAL(value);
372: }
373:
374: /* #49274, fatal error with object without a toString method
375: Fails nicely instead of getting a recovarable fatal error. */
376: if (Z_TYPE_PP(value) == IS_OBJECT) {
377: zend_class_entry *ce;
378:
379: ce = Z_OBJCE_PP(value);
380: if (!ce->__tostring) {
381: ZVAL_FALSE(*value);
382: return;
383: }
384: }
385:
386: /* Here be strings */
387: convert_to_string(*value);
388:
389: filter_func.function(*value, flags, options, charset TSRMLS_CC);
390:
391: if (
392: options && (Z_TYPE_P(options) == IS_ARRAY || Z_TYPE_P(options) == IS_OBJECT) &&
393: ((flags & FILTER_NULL_ON_FAILURE && Z_TYPE_PP(value) == IS_NULL) ||
394: (!(flags & FILTER_NULL_ON_FAILURE) && Z_TYPE_PP(value) == IS_BOOL && Z_LVAL_PP(value) == 0)) &&
395: zend_hash_exists(HASH_OF(options), "default", sizeof("default"))
396: ) {
397: zval **tmp;
398: if (zend_hash_find(HASH_OF(options), "default", sizeof("default"), (void **)&tmp) == SUCCESS) {
399: MAKE_COPY_ZVAL(tmp, *value);
400: }
401: }
402: }
403: /* }}} */
404:
405: static unsigned int php_sapi_filter(int arg, char *var, char **val, unsigned int val_len, unsigned int *new_val_len TSRMLS_DC) /* {{{ */
406: {
407: zval new_var, raw_var;
408: zval *array_ptr = NULL, *orig_array_ptr = NULL;
409: int retval = 0;
410:
411: assert(*val != NULL);
412:
413: #define PARSE_CASE(s,a,t) \
414: case s: \
415: if (!IF_G(a)) { \
416: ALLOC_ZVAL(array_ptr); \
417: array_init(array_ptr); \
418: INIT_PZVAL(array_ptr); \
419: IF_G(a) = array_ptr; \
420: } else { \
421: array_ptr = IF_G(a); \
422: } \
423: orig_array_ptr = PG(http_globals)[t]; \
424: break;
425:
426: switch (arg) {
427: PARSE_CASE(PARSE_POST, post_array, TRACK_VARS_POST)
428: PARSE_CASE(PARSE_GET, get_array, TRACK_VARS_GET)
429: PARSE_CASE(PARSE_COOKIE, cookie_array, TRACK_VARS_COOKIE)
430: PARSE_CASE(PARSE_SERVER, server_array, TRACK_VARS_SERVER)
431: PARSE_CASE(PARSE_ENV, env_array, TRACK_VARS_ENV)
432:
433: case PARSE_STRING: /* PARSE_STRING is used by parse_str() function */
434: retval = 1;
435: break;
436: }
437:
438: /*
439: * According to rfc2965, more specific paths are listed above the less specific ones.
440: * If we encounter a duplicate cookie name, we should skip it, since it is not possible
441: * to have the same (plain text) cookie name for the same path and we should not overwrite
442: * more specific cookies with the less specific ones.
443: */
444: if (arg == PARSE_COOKIE && orig_array_ptr && zend_symtable_exists(Z_ARRVAL_P(orig_array_ptr), var, strlen(var)+1)) {
445: return 0;
446: }
447:
448: if (array_ptr) {
449: /* Store the RAW variable internally */
450: Z_STRLEN(raw_var) = val_len;
451: Z_STRVAL(raw_var) = estrndup(*val, val_len);
452: Z_TYPE(raw_var) = IS_STRING;
453:
454: php_register_variable_ex(var, &raw_var, array_ptr TSRMLS_CC);
455: }
456:
457: if (val_len) {
458: /* Register mangled variable */
459: Z_STRLEN(new_var) = val_len;
460: Z_TYPE(new_var) = IS_STRING;
461:
462: if (IF_G(default_filter) != FILTER_UNSAFE_RAW) {
463: zval *tmp_new_var = &new_var;
464: Z_STRVAL(new_var) = estrndup(*val, val_len);
465: INIT_PZVAL(tmp_new_var);
466: php_zval_filter(&tmp_new_var, IF_G(default_filter), IF_G(default_filter_flags), NULL, NULL/*charset*/, 0 TSRMLS_CC);
467: } else {
468: Z_STRVAL(new_var) = estrndup(*val, val_len);
469: }
470: } else { /* empty string */
471: ZVAL_EMPTY_STRING(&new_var);
472: }
473:
474: if (orig_array_ptr) {
475: php_register_variable_ex(var, &new_var, orig_array_ptr TSRMLS_CC);
476: }
477:
478: if (retval) {
479: if (new_val_len) {
480: *new_val_len = Z_STRLEN(new_var);
481: }
482: efree(*val);
483: if (Z_STRLEN(new_var)) {
484: *val = estrndup(Z_STRVAL(new_var), Z_STRLEN(new_var));
485: } else {
486: *val = estrdup("");
487: }
488: zval_dtor(&new_var);
489: }
490:
491: return retval;
492: }
493: /* }}} */
494:
495: static void php_zval_filter_recursive(zval **value, long filter, long flags, zval *options, char *charset, zend_bool copy TSRMLS_DC) /* {{{ */
496: {
497: if (Z_TYPE_PP(value) == IS_ARRAY) {
498: zval **element;
499: HashPosition pos;
500:
501: if (Z_ARRVAL_PP(value)->nApplyCount > 1) {
502: return;
503: }
504:
505: for (zend_hash_internal_pointer_reset_ex(Z_ARRVAL_PP(value), &pos);
506: zend_hash_get_current_data_ex(Z_ARRVAL_PP(value), (void **) &element, &pos) == SUCCESS;
507: zend_hash_move_forward_ex(Z_ARRVAL_PP(value), &pos)
508: ) {
509: SEPARATE_ZVAL_IF_NOT_REF(element);
510: if (Z_TYPE_PP(element) == IS_ARRAY) {
511: Z_ARRVAL_PP(element)->nApplyCount++;
512: php_zval_filter_recursive(element, filter, flags, options, charset, copy TSRMLS_CC);
513: Z_ARRVAL_PP(element)->nApplyCount--;
514: } else {
515: php_zval_filter(element, filter, flags, options, charset, copy TSRMLS_CC);
516: }
517: }
518: } else {
519: php_zval_filter(value, filter, flags, options, charset, copy TSRMLS_CC);
520: }
521: }
522: /* }}} */
523:
524: static zval *php_filter_get_storage(long arg TSRMLS_DC)/* {{{ */
525:
526: {
527: zval *array_ptr = NULL;
528:
529: switch (arg) {
530: case PARSE_GET:
531: array_ptr = IF_G(get_array);
532: break;
533: case PARSE_POST:
534: array_ptr = IF_G(post_array);
535: break;
536: case PARSE_COOKIE:
537: array_ptr = IF_G(cookie_array);
538: break;
539: case PARSE_SERVER:
540: if (PG(auto_globals_jit)) {
541: zend_is_auto_global("_SERVER", sizeof("_SERVER")-1 TSRMLS_CC);
542: }
543: array_ptr = IF_G(server_array);
544: break;
545: case PARSE_ENV:
546: if (PG(auto_globals_jit)) {
547: zend_is_auto_global("_ENV", sizeof("_ENV")-1 TSRMLS_CC);
548: }
549: array_ptr = IF_G(env_array) ? IF_G(env_array) : PG(http_globals)[TRACK_VARS_ENV];
550: break;
551: case PARSE_SESSION:
552: /* FIXME: Implement session source */
553: php_error_docref(NULL TSRMLS_CC, E_WARNING, "INPUT_SESSION is not yet implemented");
554: break;
555: case PARSE_REQUEST:
556: /* FIXME: Implement request source */
557: php_error_docref(NULL TSRMLS_CC, E_WARNING, "INPUT_REQUEST is not yet implemented");
558: break;
559: }
560:
561: return array_ptr;
562: }
563: /* }}} */
564:
565: /* {{{ proto mixed filter_has_var(constant type, string variable_name)
566: * Returns true if the variable with the name 'name' exists in source.
567: */
568: PHP_FUNCTION(filter_has_var)
569: {
570: long arg;
571: char *var;
572: int var_len;
573: zval *array_ptr = NULL;
574:
575: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ls", &arg, &var, &var_len) == FAILURE) {
576: RETURN_FALSE;
577: }
578:
579: array_ptr = php_filter_get_storage(arg TSRMLS_CC);
580:
581: if (array_ptr && HASH_OF(array_ptr) && zend_hash_exists(HASH_OF(array_ptr), var, var_len + 1)) {
582: RETURN_TRUE;
583: }
584:
585: RETURN_FALSE;
586: }
587: /* }}} */
588:
589: static void php_filter_call(zval **filtered, long filter, zval **filter_args, const int copy, long filter_flags TSRMLS_DC) /* {{{ */
590: {
591: zval *options = NULL;
592: zval **option;
593: char *charset = NULL;
594:
595: if (filter_args && Z_TYPE_PP(filter_args) != IS_ARRAY) {
596: long lval;
597:
598: PHP_FILTER_GET_LONG_OPT(filter_args, lval);
599:
600: if (filter != -1) { /* handler for array apply */
601: /* filter_args is the filter_flags */
602: filter_flags = lval;
603:
604: if (!(filter_flags & FILTER_REQUIRE_ARRAY || filter_flags & FILTER_FORCE_ARRAY)) {
605: filter_flags |= FILTER_REQUIRE_SCALAR;
606: }
607: } else {
608: filter = lval;
609: }
610: } else if (filter_args) {
611: if (zend_hash_find(HASH_OF(*filter_args), "filter", sizeof("filter"), (void **)&option) == SUCCESS) {
612: PHP_FILTER_GET_LONG_OPT(option, filter);
613: }
614:
615: if (zend_hash_find(HASH_OF(*filter_args), "flags", sizeof("flags"), (void **)&option) == SUCCESS) {
616: PHP_FILTER_GET_LONG_OPT(option, filter_flags);
617:
618: if (!(filter_flags & FILTER_REQUIRE_ARRAY || filter_flags & FILTER_FORCE_ARRAY)) {
619: filter_flags |= FILTER_REQUIRE_SCALAR;
620: }
621: }
622:
623: if (zend_hash_find(HASH_OF(*filter_args), "options", sizeof("options"), (void **)&option) == SUCCESS) {
624: if (filter != FILTER_CALLBACK) {
625: if (Z_TYPE_PP(option) == IS_ARRAY) {
626: options = *option;
627: }
628: } else {
629: options = *option;
630: filter_flags = 0;
631: }
632: }
633: }
634:
635: if (Z_TYPE_PP(filtered) == IS_ARRAY) {
636: if (filter_flags & FILTER_REQUIRE_SCALAR) {
637: if (copy) {
638: SEPARATE_ZVAL(filtered);
639: }
640: zval_dtor(*filtered);
641: if (filter_flags & FILTER_NULL_ON_FAILURE) {
642: ZVAL_NULL(*filtered);
643: } else {
644: ZVAL_FALSE(*filtered);
645: }
646: return;
647: }
648: php_zval_filter_recursive(filtered, filter, filter_flags, options, charset, copy TSRMLS_CC);
649: return;
650: }
651: if (filter_flags & FILTER_REQUIRE_ARRAY) {
652: if (copy) {
653: SEPARATE_ZVAL(filtered);
654: }
655: zval_dtor(*filtered);
656: if (filter_flags & FILTER_NULL_ON_FAILURE) {
657: ZVAL_NULL(*filtered);
658: } else {
659: ZVAL_FALSE(*filtered);
660: }
661: return;
662: }
663:
664: php_zval_filter(filtered, filter, filter_flags, options, charset, copy TSRMLS_CC);
665: if (filter_flags & FILTER_FORCE_ARRAY) {
666: zval *tmp;
667:
668: ALLOC_ZVAL(tmp);
669: MAKE_COPY_ZVAL(filtered, tmp);
670:
671: zval_dtor(*filtered);
672:
673: array_init(*filtered);
674: add_next_index_zval(*filtered, tmp);
675: }
676: }
677: /* }}} */
678:
679: static void php_filter_array_handler(zval *input, zval **op, zval *return_value, zend_bool add_empty TSRMLS_DC) /* {{{ */
680: {
681: char *arg_key;
682: uint arg_key_len;
683: ulong index;
684: HashPosition pos;
685: zval **tmp, **arg_elm;
686:
687: if (!op) {
688: zval_dtor(return_value);
689: MAKE_COPY_ZVAL(&input, return_value);
690: php_filter_call(&return_value, FILTER_DEFAULT, NULL, 0, FILTER_REQUIRE_ARRAY TSRMLS_CC);
691: } else if (Z_TYPE_PP(op) == IS_LONG) {
692: zval_dtor(return_value);
693: MAKE_COPY_ZVAL(&input, return_value);
694: php_filter_call(&return_value, Z_LVAL_PP(op), NULL, 0, FILTER_REQUIRE_ARRAY TSRMLS_CC);
695: } else if (Z_TYPE_PP(op) == IS_ARRAY) {
696: array_init(return_value);
697:
698: zend_hash_internal_pointer_reset(Z_ARRVAL_PP(op));
699: for (zend_hash_internal_pointer_reset_ex(Z_ARRVAL_PP(op), &pos);
700: zend_hash_get_current_data_ex(Z_ARRVAL_PP(op), (void **) &arg_elm, &pos) == SUCCESS;
701: zend_hash_move_forward_ex(Z_ARRVAL_PP(op), &pos))
702: {
703: if (zend_hash_get_current_key_ex(Z_ARRVAL_PP(op), &arg_key, &arg_key_len, &index, 0, &pos) != HASH_KEY_IS_STRING) {
704: php_error_docref(NULL TSRMLS_CC, E_WARNING, "Numeric keys are not allowed in the definition array");
705: zval_dtor(return_value);
706: RETURN_FALSE;
707: }
708: if (arg_key_len < 2) {
709: php_error_docref(NULL TSRMLS_CC, E_WARNING, "Empty keys are not allowed in the definition array");
710: zval_dtor(return_value);
711: RETURN_FALSE;
712: }
713: if (zend_hash_find(Z_ARRVAL_P(input), arg_key, arg_key_len, (void **)&tmp) != SUCCESS) {
714: if (add_empty) {
715: add_assoc_null_ex(return_value, arg_key, arg_key_len);
716: }
717: } else {
718: zval *nval;
719:
720: ALLOC_ZVAL(nval);
721: MAKE_COPY_ZVAL(tmp, nval);
722:
723: php_filter_call(&nval, -1, arg_elm, 0, FILTER_REQUIRE_SCALAR TSRMLS_CC);
724: add_assoc_zval_ex(return_value, arg_key, arg_key_len, nval);
725: }
726: }
727: } else {
728: RETURN_FALSE;
729: }
730: }
731: /* }}} */
732:
733: /* {{{ proto mixed filter_input(constant type, string variable_name [, long filter [, mixed options]])
734: * Returns the filtered variable 'name'* from source `type`.
735: */
736: PHP_FUNCTION(filter_input)
737: {
738: long fetch_from, filter = FILTER_DEFAULT;
739: zval **filter_args = NULL, **tmp;
740: zval *input = NULL;
741: char *var;
742: int var_len;
743:
744: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ls|lZ", &fetch_from, &var, &var_len, &filter, &filter_args) == FAILURE) {
745: return;
746: }
747:
748: if (!PHP_FILTER_ID_EXISTS(filter)) {
749: RETURN_FALSE;
750: }
751:
752: input = php_filter_get_storage(fetch_from TSRMLS_CC);
753:
754: if (!input || !HASH_OF(input) || zend_hash_find(HASH_OF(input), var, var_len + 1, (void **)&tmp) != SUCCESS) {
755: long filter_flags = 0;
756: zval **option, **opt, **def;
757: if (filter_args) {
758: if (Z_TYPE_PP(filter_args) == IS_LONG) {
759: filter_flags = Z_LVAL_PP(filter_args);
760: } else if (Z_TYPE_PP(filter_args) == IS_ARRAY && zend_hash_find(HASH_OF(*filter_args), "flags", sizeof("flags"), (void **)&option) == SUCCESS) {
761: PHP_FILTER_GET_LONG_OPT(option, filter_flags);
762: }
763: if (Z_TYPE_PP(filter_args) == IS_ARRAY &&
764: zend_hash_find(HASH_OF(*filter_args), "options", sizeof("options"), (void **)&opt) == SUCCESS &&
765: Z_TYPE_PP(opt) == IS_ARRAY &&
766: zend_hash_find(HASH_OF(*opt), "default", sizeof("default"), (void **)&def) == SUCCESS
767: ) {
768: MAKE_COPY_ZVAL(def, return_value);
769: return;
770: }
771: }
772:
773: /* The FILTER_NULL_ON_FAILURE flag inverts the usual return values of
774: * the function: normally when validation fails false is returned, and
775: * when the input value doesn't exist NULL is returned. With the flag
776: * set, NULL and false should be returned, respectively. Ergo, although
777: * the code below looks incorrect, it's actually right. */
778: if (filter_flags & FILTER_NULL_ON_FAILURE) {
779: RETURN_FALSE;
780: } else {
781: RETURN_NULL();
782: }
783: }
784:
785: MAKE_COPY_ZVAL(tmp, return_value);
786:
787: php_filter_call(&return_value, filter, filter_args, 1, FILTER_REQUIRE_SCALAR TSRMLS_CC);
788: }
789: /* }}} */
790:
791: /* {{{ proto mixed filter_var(mixed variable [, long filter [, mixed options]])
792: * Returns the filtered version of the vriable.
793: */
794: PHP_FUNCTION(filter_var)
795: {
796: long filter = FILTER_DEFAULT;
797: zval **filter_args = NULL, *data;
798:
799: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "z/|lZ", &data, &filter, &filter_args) == FAILURE) {
800: return;
801: }
802:
803: if (!PHP_FILTER_ID_EXISTS(filter)) {
804: RETURN_FALSE;
805: }
806:
807: MAKE_COPY_ZVAL(&data, return_value);
808:
809: php_filter_call(&return_value, filter, filter_args, 1, FILTER_REQUIRE_SCALAR TSRMLS_CC);
810: }
811: /* }}} */
812:
813: /* {{{ proto mixed filter_input_array(constant type, [, mixed options [, bool add_empty]]])
814: * Returns an array with all arguments defined in 'definition'.
815: */
816: PHP_FUNCTION(filter_input_array)
817: {
818: long fetch_from;
819: zval *array_input = NULL, **op = NULL;
820: zend_bool add_empty = 1;
821:
822: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l|Zb", &fetch_from, &op, &add_empty) == FAILURE) {
823: return;
824: }
825:
826: if (op
827: && (Z_TYPE_PP(op) != IS_ARRAY)
828: && (Z_TYPE_PP(op) == IS_LONG && !PHP_FILTER_ID_EXISTS(Z_LVAL_PP(op)))
829: ) {
830: RETURN_FALSE;
831: }
832:
833: array_input = php_filter_get_storage(fetch_from TSRMLS_CC);
834:
835: if (!array_input || !HASH_OF(array_input)) {
836: long filter_flags = 0;
837: zval **option;
838: if (op) {
839: if (Z_TYPE_PP(op) == IS_LONG) {
840: filter_flags = Z_LVAL_PP(op);
841: } else if (Z_TYPE_PP(op) == IS_ARRAY && zend_hash_find(HASH_OF(*op), "flags", sizeof("flags"), (void **)&option) == SUCCESS) {
842: PHP_FILTER_GET_LONG_OPT(option, filter_flags);
843: }
844: }
845:
846: /* The FILTER_NULL_ON_FAILURE flag inverts the usual return values of
847: * the function: normally when validation fails false is returned, and
848: * when the input value doesn't exist NULL is returned. With the flag
849: * set, NULL and false should be returned, respectively. Ergo, although
850: * the code below looks incorrect, it's actually right. */
851: if (filter_flags & FILTER_NULL_ON_FAILURE) {
852: RETURN_FALSE;
853: } else {
854: RETURN_NULL();
855: }
856: }
857:
858: php_filter_array_handler(array_input, op, return_value, add_empty TSRMLS_CC);
859: }
860: /* }}} */
861:
862: /* {{{ proto mixed filter_var_array(array data, [, mixed options [, bool add_empty]]])
863: * Returns an array with all arguments defined in 'definition'.
864: */
865: PHP_FUNCTION(filter_var_array)
866: {
867: zval *array_input = NULL, **op = NULL;
868: zend_bool add_empty = 1;
869:
870: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "a|Zb", &array_input, &op, &add_empty) == FAILURE) {
871: return;
872: }
873:
874: if (op
875: && (Z_TYPE_PP(op) != IS_ARRAY)
876: && (Z_TYPE_PP(op) == IS_LONG && !PHP_FILTER_ID_EXISTS(Z_LVAL_PP(op)))
877: ) {
878: RETURN_FALSE;
879: }
880:
881: php_filter_array_handler(array_input, op, return_value, add_empty TSRMLS_CC);
882: }
883: /* }}} */
884:
885: /* {{{ proto filter_list()
886: * Returns a list of all supported filters */
887: PHP_FUNCTION(filter_list)
888: {
889: int i, size = sizeof(filter_list) / sizeof(filter_list_entry);
890:
891: if (zend_parse_parameters_none() == FAILURE) {
892: return;
893: }
894:
895: array_init(return_value);
896: for (i = 0; i < size; ++i) {
897: add_next_index_string(return_value, (char *)filter_list[i].name, 1);
898: }
899: }
900: /* }}} */
901:
902: /* {{{ proto filter_id(string filtername)
903: * Returns the filter ID belonging to a named filter */
904: PHP_FUNCTION(filter_id)
905: {
906: int i, filter_len;
907: int size = sizeof(filter_list) / sizeof(filter_list_entry);
908: char *filter;
909:
910: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &filter, &filter_len) == FAILURE) {
911: return;
912: }
913:
914: for (i = 0; i < size; ++i) {
915: if (strcmp(filter_list[i].name, filter) == 0) {
916: RETURN_LONG(filter_list[i].id);
917: }
918: }
919:
920: RETURN_FALSE;
921: }
922: /* }}} */
923:
924: /*
925: * Local variables:
926: * tab-width: 4
927: * c-basic-offset: 4
928: * End:
929: * vim600: noet sw=4 ts=4 fdm=marker
930: * vim<600: noet sw=4 ts=4
931: */
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