Annotation of embedaddon/php/Zend/zend_constants.c, revision 1.1.1.1
1.1 misho 1: /*
2: +----------------------------------------------------------------------+
3: | Zend Engine |
4: +----------------------------------------------------------------------+
5: | Copyright (c) 1998-2012 Zend Technologies Ltd. (http://www.zend.com) |
6: +----------------------------------------------------------------------+
7: | This source file is subject to version 2.00 of the Zend 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.zend.com/license/2_00.txt. |
11: | If you did not receive a copy of the Zend license and are unable to |
12: | obtain it through the world-wide-web, please send a note to |
13: | license@zend.com so we can mail you a copy immediately. |
14: +----------------------------------------------------------------------+
15: | Authors: Andi Gutmans <andi@zend.com> |
16: | Zeev Suraski <zeev@zend.com> |
17: +----------------------------------------------------------------------+
18: */
19:
20: /* $Id: zend_constants.c 321634 2012-01-01 13:15:04Z felipe $ */
21:
22: #include "zend.h"
23: #include "zend_constants.h"
24: #include "zend_execute.h"
25: #include "zend_variables.h"
26: #include "zend_operators.h"
27: #include "zend_globals.h"
28:
29:
30: void free_zend_constant(zend_constant *c)
31: {
32: if (!(c->flags & CONST_PERSISTENT)) {
33: zval_dtor(&c->value);
34: }
35: free(c->name);
36: }
37:
38:
39: void copy_zend_constant(zend_constant *c)
40: {
41: c->name = zend_strndup(c->name, c->name_len - 1);
42: if (!(c->flags & CONST_PERSISTENT)) {
43: zval_copy_ctor(&c->value);
44: }
45: }
46:
47:
48: void zend_copy_constants(HashTable *target, HashTable *source)
49: {
50: zend_constant tmp_constant;
51:
52: zend_hash_copy(target, source, (copy_ctor_func_t) copy_zend_constant, &tmp_constant, sizeof(zend_constant));
53: }
54:
55:
56: static int clean_non_persistent_constant(const zend_constant *c TSRMLS_DC)
57: {
58: return (c->flags & CONST_PERSISTENT) ? ZEND_HASH_APPLY_STOP : ZEND_HASH_APPLY_REMOVE;
59: }
60:
61:
62: static int clean_non_persistent_constant_full(const zend_constant *c TSRMLS_DC)
63: {
64: return (c->flags & CONST_PERSISTENT) ? 0 : 1;
65: }
66:
67:
68: static int clean_module_constant(const zend_constant *c, int *module_number TSRMLS_DC)
69: {
70: if (c->module_number == *module_number) {
71: return 1;
72: } else {
73: return 0;
74: }
75: }
76:
77:
78: void clean_module_constants(int module_number TSRMLS_DC)
79: {
80: zend_hash_apply_with_argument(EG(zend_constants), (apply_func_arg_t) clean_module_constant, (void *) &module_number TSRMLS_CC);
81: }
82:
83:
84: int zend_startup_constants(TSRMLS_D)
85: {
86: EG(zend_constants) = (HashTable *) malloc(sizeof(HashTable));
87:
88: if (zend_hash_init(EG(zend_constants), 20, NULL, ZEND_CONSTANT_DTOR, 1)==FAILURE) {
89: return FAILURE;
90: }
91: return SUCCESS;
92: }
93:
94:
95:
96: void zend_register_standard_constants(TSRMLS_D)
97: {
98: REGISTER_MAIN_LONG_CONSTANT("E_ERROR", E_ERROR, CONST_PERSISTENT | CONST_CS);
99: REGISTER_MAIN_LONG_CONSTANT("E_RECOVERABLE_ERROR", E_RECOVERABLE_ERROR, CONST_PERSISTENT | CONST_CS);
100: REGISTER_MAIN_LONG_CONSTANT("E_WARNING", E_WARNING, CONST_PERSISTENT | CONST_CS);
101: REGISTER_MAIN_LONG_CONSTANT("E_PARSE", E_PARSE, CONST_PERSISTENT | CONST_CS);
102: REGISTER_MAIN_LONG_CONSTANT("E_NOTICE", E_NOTICE, CONST_PERSISTENT | CONST_CS);
103: REGISTER_MAIN_LONG_CONSTANT("E_STRICT", E_STRICT, CONST_PERSISTENT | CONST_CS);
104: REGISTER_MAIN_LONG_CONSTANT("E_DEPRECATED", E_DEPRECATED, CONST_PERSISTENT | CONST_CS);
105: REGISTER_MAIN_LONG_CONSTANT("E_CORE_ERROR", E_CORE_ERROR, CONST_PERSISTENT | CONST_CS);
106: REGISTER_MAIN_LONG_CONSTANT("E_CORE_WARNING", E_CORE_WARNING, CONST_PERSISTENT | CONST_CS);
107: REGISTER_MAIN_LONG_CONSTANT("E_COMPILE_ERROR", E_COMPILE_ERROR, CONST_PERSISTENT | CONST_CS);
108: REGISTER_MAIN_LONG_CONSTANT("E_COMPILE_WARNING", E_COMPILE_WARNING, CONST_PERSISTENT | CONST_CS);
109: REGISTER_MAIN_LONG_CONSTANT("E_USER_ERROR", E_USER_ERROR, CONST_PERSISTENT | CONST_CS);
110: REGISTER_MAIN_LONG_CONSTANT("E_USER_WARNING", E_USER_WARNING, CONST_PERSISTENT | CONST_CS);
111: REGISTER_MAIN_LONG_CONSTANT("E_USER_NOTICE", E_USER_NOTICE, CONST_PERSISTENT | CONST_CS);
112: REGISTER_MAIN_LONG_CONSTANT("E_USER_DEPRECATED", E_USER_DEPRECATED, CONST_PERSISTENT | CONST_CS);
113:
114: REGISTER_MAIN_LONG_CONSTANT("E_ALL", E_ALL, CONST_PERSISTENT | CONST_CS);
115:
116: #if SUHOSIN_PATCH
117: REGISTER_MAIN_LONG_CONSTANT("S_MEMORY", S_MEMORY, CONST_PERSISTENT | CONST_CS);
118: REGISTER_MAIN_LONG_CONSTANT("S_VARS", S_VARS, CONST_PERSISTENT | CONST_CS);
119: REGISTER_MAIN_LONG_CONSTANT("S_FILES", S_FILES, CONST_PERSISTENT | CONST_CS);
120: REGISTER_MAIN_LONG_CONSTANT("S_INCLUDE", S_INCLUDE, CONST_PERSISTENT | CONST_CS);
121: REGISTER_MAIN_LONG_CONSTANT("S_SQL", S_SQL, CONST_PERSISTENT | CONST_CS);
122: REGISTER_MAIN_LONG_CONSTANT("S_EXECUTOR", S_EXECUTOR, CONST_PERSISTENT | CONST_CS);
123: REGISTER_MAIN_LONG_CONSTANT("S_MAIL", S_MAIL, CONST_PERSISTENT | CONST_CS);
124: REGISTER_MAIN_LONG_CONSTANT("S_SESSION", S_SESSION, CONST_PERSISTENT | CONST_CS);
125: REGISTER_MAIN_LONG_CONSTANT("S_MISC", S_MISC, CONST_PERSISTENT | CONST_CS);
126: REGISTER_MAIN_LONG_CONSTANT("S_INTERNAL", S_INTERNAL, CONST_PERSISTENT | CONST_CS);
127: REGISTER_MAIN_LONG_CONSTANT("S_ALL", S_ALL, CONST_PERSISTENT | CONST_CS);
128:
129: /* error levels */
130: REGISTER_MAIN_LONG_CONSTANT("LOG_EMERG", LOG_EMERG, CONST_CS | CONST_PERSISTENT); /* system unusable */
131: REGISTER_MAIN_LONG_CONSTANT("LOG_ALERT", LOG_ALERT, CONST_CS | CONST_PERSISTENT); /* immediate action required */
132: REGISTER_MAIN_LONG_CONSTANT("LOG_CRIT", LOG_CRIT, CONST_CS | CONST_PERSISTENT); /* critical conditions */
133: REGISTER_MAIN_LONG_CONSTANT("LOG_ERR", LOG_ERR, CONST_CS | CONST_PERSISTENT);
134: REGISTER_MAIN_LONG_CONSTANT("LOG_WARNING", LOG_WARNING, CONST_CS | CONST_PERSISTENT);
135: REGISTER_MAIN_LONG_CONSTANT("LOG_NOTICE", LOG_NOTICE, CONST_CS | CONST_PERSISTENT);
136: REGISTER_MAIN_LONG_CONSTANT("LOG_INFO", LOG_INFO, CONST_CS | CONST_PERSISTENT);
137: REGISTER_MAIN_LONG_CONSTANT("LOG_DEBUG", LOG_DEBUG, CONST_CS | CONST_PERSISTENT);
138: /* facility: type of program logging the message */
139: REGISTER_MAIN_LONG_CONSTANT("LOG_KERN", LOG_KERN, CONST_CS | CONST_PERSISTENT);
140: REGISTER_MAIN_LONG_CONSTANT("LOG_USER", LOG_USER, CONST_CS | CONST_PERSISTENT); /* generic user level */
141: REGISTER_MAIN_LONG_CONSTANT("LOG_MAIL", LOG_MAIL, CONST_CS | CONST_PERSISTENT); /* log to email */
142: REGISTER_MAIN_LONG_CONSTANT("LOG_DAEMON", LOG_DAEMON, CONST_CS | CONST_PERSISTENT); /* other system daemons */
143: REGISTER_MAIN_LONG_CONSTANT("LOG_AUTH", LOG_AUTH, CONST_CS | CONST_PERSISTENT);
144: REGISTER_MAIN_LONG_CONSTANT("LOG_SYSLOG", LOG_SYSLOG, CONST_CS | CONST_PERSISTENT);
145: REGISTER_MAIN_LONG_CONSTANT("LOG_LPR", LOG_LPR, CONST_CS | CONST_PERSISTENT);
146: #ifdef LOG_NEWS
147: /* No LOG_NEWS on HP-UX */
148: REGISTER_MAIN_LONG_CONSTANT("LOG_NEWS", LOG_NEWS, CONST_CS | CONST_PERSISTENT); /* usenet new */
149: #endif
150: #ifdef LOG_UUCP
151: /* No LOG_UUCP on HP-UX */
152: REGISTER_MAIN_LONG_CONSTANT("LOG_UUCP", LOG_UUCP, CONST_CS | CONST_PERSISTENT);
153: #endif
154: #ifdef LOG_CRON
155: /* apparently some systems don't have this one */
156: REGISTER_MAIN_LONG_CONSTANT("LOG_CRON", LOG_CRON, CONST_CS | CONST_PERSISTENT);
157: #endif
158: #ifdef LOG_AUTHPRIV
159: /* AIX doesn't have LOG_AUTHPRIV */
160: REGISTER_MAIN_LONG_CONSTANT("LOG_AUTHPRIV", LOG_AUTHPRIV, CONST_CS | CONST_PERSISTENT);
161: #endif
162: #ifndef PHP_WIN32
163: REGISTER_MAIN_LONG_CONSTANT("LOG_LOCAL0", LOG_LOCAL0, CONST_CS | CONST_PERSISTENT);
164: REGISTER_MAIN_LONG_CONSTANT("LOG_LOCAL1", LOG_LOCAL1, CONST_CS | CONST_PERSISTENT);
165: REGISTER_MAIN_LONG_CONSTANT("LOG_LOCAL2", LOG_LOCAL2, CONST_CS | CONST_PERSISTENT);
166: REGISTER_MAIN_LONG_CONSTANT("LOG_LOCAL3", LOG_LOCAL3, CONST_CS | CONST_PERSISTENT);
167: REGISTER_MAIN_LONG_CONSTANT("LOG_LOCAL4", LOG_LOCAL4, CONST_CS | CONST_PERSISTENT);
168: REGISTER_MAIN_LONG_CONSTANT("LOG_LOCAL5", LOG_LOCAL5, CONST_CS | CONST_PERSISTENT);
169: REGISTER_MAIN_LONG_CONSTANT("LOG_LOCAL6", LOG_LOCAL6, CONST_CS | CONST_PERSISTENT);
170: REGISTER_MAIN_LONG_CONSTANT("LOG_LOCAL7", LOG_LOCAL7, CONST_CS | CONST_PERSISTENT);
171: #endif
172: /* options */
173: REGISTER_MAIN_LONG_CONSTANT("LOG_PID", LOG_PID, CONST_CS | CONST_PERSISTENT);
174: REGISTER_MAIN_LONG_CONSTANT("LOG_CONS", LOG_CONS, CONST_CS | CONST_PERSISTENT);
175: REGISTER_MAIN_LONG_CONSTANT("LOG_ODELAY", LOG_ODELAY, CONST_CS | CONST_PERSISTENT);
176: REGISTER_MAIN_LONG_CONSTANT("LOG_NDELAY", LOG_NDELAY, CONST_CS | CONST_PERSISTENT);
177: #ifdef LOG_NOWAIT
178: REGISTER_MAIN_LONG_CONSTANT("LOG_NOWAIT", LOG_NOWAIT, CONST_CS | CONST_PERSISTENT);
179: #endif
180: #ifdef LOG_PERROR
181: /* AIX doesn't have LOG_PERROR */
182: REGISTER_MAIN_LONG_CONSTANT("LOG_PERROR", LOG_PERROR, CONST_CS | CONST_PERSISTENT); /*log to stderr*/
183: #endif
184: #endif
185:
186: REGISTER_MAIN_LONG_CONSTANT("DEBUG_BACKTRACE_PROVIDE_OBJECT", DEBUG_BACKTRACE_PROVIDE_OBJECT, CONST_PERSISTENT | CONST_CS);
187: REGISTER_MAIN_LONG_CONSTANT("DEBUG_BACKTRACE_IGNORE_ARGS", DEBUG_BACKTRACE_IGNORE_ARGS, CONST_PERSISTENT | CONST_CS);
188: /* true/false constants */
189: {
190: zend_constant c;
191:
192: c.flags = CONST_PERSISTENT | CONST_CT_SUBST;
193: c.module_number = 0;
194:
195: c.name = zend_strndup(ZEND_STRL("TRUE"));
196: c.name_len = sizeof("TRUE");
197: c.value.value.lval = 1;
198: c.value.type = IS_BOOL;
199: zend_register_constant(&c TSRMLS_CC);
200:
201: c.name = zend_strndup(ZEND_STRL("FALSE"));
202: c.name_len = sizeof("FALSE");
203: c.value.value.lval = 0;
204: c.value.type = IS_BOOL;
205: zend_register_constant(&c TSRMLS_CC);
206:
207: c.name = zend_strndup(ZEND_STRL("NULL"));
208: c.name_len = sizeof("NULL");
209: c.value.type = IS_NULL;
210: zend_register_constant(&c TSRMLS_CC);
211:
212: c.flags = CONST_PERSISTENT;
213:
214: c.name = zend_strndup(ZEND_STRL("ZEND_THREAD_SAFE"));
215: c.name_len = sizeof("ZEND_THREAD_SAFE");
216: c.value.value.lval = ZTS_V;
217: c.value.type = IS_BOOL;
218: zend_register_constant(&c TSRMLS_CC);
219:
220: c.name = zend_strndup(ZEND_STRL("ZEND_DEBUG_BUILD"));
221: c.name_len = sizeof("ZEND_DEBUG_BUILD");
222: c.value.value.lval = ZEND_DEBUG;
223: c.value.type = IS_BOOL;
224: zend_register_constant(&c TSRMLS_CC);
225: }
226: }
227:
228:
229: int zend_shutdown_constants(TSRMLS_D)
230: {
231: zend_hash_destroy(EG(zend_constants));
232: free(EG(zend_constants));
233: return SUCCESS;
234: }
235:
236:
237: void clean_non_persistent_constants(TSRMLS_D)
238: {
239: if (EG(full_tables_cleanup)) {
240: zend_hash_apply(EG(zend_constants), (apply_func_t) clean_non_persistent_constant_full TSRMLS_CC);
241: } else {
242: zend_hash_reverse_apply(EG(zend_constants), (apply_func_t) clean_non_persistent_constant TSRMLS_CC);
243: }
244: }
245:
246:
247: ZEND_API void zend_register_long_constant(const char *name, uint name_len, long lval, int flags, int module_number TSRMLS_DC)
248: {
249: zend_constant c;
250:
251: c.value.type = IS_LONG;
252: c.value.value.lval = lval;
253: c.flags = flags;
254: c.name = zend_strndup(name, name_len-1);
255: c.name_len = name_len;
256: c.module_number = module_number;
257: zend_register_constant(&c TSRMLS_CC);
258: }
259:
260:
261: ZEND_API void zend_register_double_constant(const char *name, uint name_len, double dval, int flags, int module_number TSRMLS_DC)
262: {
263: zend_constant c;
264:
265: c.value.type = IS_DOUBLE;
266: c.value.value.dval = dval;
267: c.flags = flags;
268: c.name = zend_strndup(name, name_len-1);
269: c.name_len = name_len;
270: c.module_number = module_number;
271: zend_register_constant(&c TSRMLS_CC);
272: }
273:
274:
275: ZEND_API void zend_register_stringl_constant(const char *name, uint name_len, char *strval, uint strlen, int flags, int module_number TSRMLS_DC)
276: {
277: zend_constant c;
278:
279: c.value.type = IS_STRING;
280: c.value.value.str.val = strval;
281: c.value.value.str.len = strlen;
282: c.flags = flags;
283: c.name = zend_strndup(name, name_len-1);
284: c.name_len = name_len;
285: c.module_number = module_number;
286: zend_register_constant(&c TSRMLS_CC);
287: }
288:
289:
290: ZEND_API void zend_register_string_constant(const char *name, uint name_len, char *strval, int flags, int module_number TSRMLS_DC)
291: {
292: zend_register_stringl_constant(name, name_len, strval, strlen(strval), flags, module_number TSRMLS_CC);
293: }
294:
295:
296: ZEND_API int zend_get_constant(const char *name, uint name_len, zval *result TSRMLS_DC)
297: {
298: zend_constant *c;
299: int retval = 1;
300: char *lookup_name;
301:
302: if (zend_hash_find(EG(zend_constants), name, name_len+1, (void **) &c) == FAILURE) {
303: lookup_name = zend_str_tolower_dup(name, name_len);
304:
305: if (zend_hash_find(EG(zend_constants), lookup_name, name_len+1, (void **) &c)==SUCCESS) {
306: if (c->flags & CONST_CS) {
307: retval=0;
308: }
309: } else {
310: static char haltoff[] = "__COMPILER_HALT_OFFSET__";
311:
312: if (!EG(in_execution)) {
313: retval = 0;
314: } else if (name_len == sizeof("__COMPILER_HALT_OFFSET__")-1 &&
315: !memcmp(name, "__COMPILER_HALT_OFFSET__", sizeof("__COMPILER_HALT_OFFSET__")-1)) {
316: char *cfilename, *haltname;
317: int len, clen;
318:
319: cfilename = zend_get_executed_filename(TSRMLS_C);
320: clen = strlen(cfilename);
321: /* check for __COMPILER_HALT_OFFSET__ */
322: zend_mangle_property_name(&haltname, &len, haltoff,
323: sizeof("__COMPILER_HALT_OFFSET__") - 1, cfilename, clen, 0);
324: if (zend_hash_find(EG(zend_constants), haltname, len+1, (void **) &c) == SUCCESS) {
325: retval = 1;
326: } else {
327: retval=0;
328: }
329: pefree(haltname, 0);
330: } else {
331: retval=0;
332: }
333: }
334: efree(lookup_name);
335: }
336:
337: if (retval) {
338: *result = c->value;
339: zval_copy_ctor(result);
340: Z_SET_REFCOUNT_P(result, 1);
341: Z_UNSET_ISREF_P(result);
342: }
343:
344: return retval;
345: }
346:
347: ZEND_API int zend_get_constant_ex(const char *name, uint name_len, zval *result, zend_class_entry *scope, ulong flags TSRMLS_DC)
348: {
349: zend_constant *c;
350: int retval = 1;
351: char *colon;
352: zend_class_entry *ce = NULL;
353: char *class_name;
354: zval **ret_constant;
355:
356: /* Skip leading \\ */
357: if (name[0] == '\\') {
358: name += 1;
359: name_len -= 1;
360: }
361:
362:
363: if ((colon = zend_memrchr(name, ':', name_len)) &&
364: colon > name && (*(colon - 1) == ':')) {
365: int class_name_len = colon - name - 1;
366: int const_name_len = name_len - class_name_len - 2;
367: char *constant_name = colon + 1;
368: char *lcname;
369:
370: class_name = estrndup(name, class_name_len);
371: lcname = zend_str_tolower_dup(class_name, class_name_len);
372: if (!scope) {
373: if (EG(in_execution)) {
374: scope = EG(scope);
375: } else {
376: scope = CG(active_class_entry);
377: }
378: }
379:
380: if (class_name_len == sizeof("self")-1 &&
381: !memcmp(lcname, "self", sizeof("self")-1)) {
382: if (scope) {
383: ce = scope;
384: } else {
385: zend_error(E_ERROR, "Cannot access self:: when no class scope is active");
386: retval = 0;
387: }
388: efree(lcname);
389: } else if (class_name_len == sizeof("parent")-1 &&
390: !memcmp(lcname, "parent", sizeof("parent")-1)) {
391: if (!scope) {
392: zend_error(E_ERROR, "Cannot access parent:: when no class scope is active");
393: } else if (!scope->parent) {
394: zend_error(E_ERROR, "Cannot access parent:: when current class scope has no parent");
395: } else {
396: ce = scope->parent;
397: }
398: efree(lcname);
399: } else if (class_name_len == sizeof("static")-1 &&
400: !memcmp(lcname, "static", sizeof("static")-1)) {
401: if (EG(called_scope)) {
402: ce = EG(called_scope);
403: } else {
404: zend_error(E_ERROR, "Cannot access static:: when no class scope is active");
405: }
406: efree(lcname);
407: } else {
408: efree(lcname);
409: ce = zend_fetch_class(class_name, class_name_len, flags TSRMLS_CC);
410: }
411: if (retval && ce) {
412: if (zend_hash_find(&ce->constants_table, constant_name, const_name_len+1, (void **) &ret_constant) != SUCCESS) {
413: retval = 0;
414: if ((flags & ZEND_FETCH_CLASS_SILENT) == 0) {
415: zend_error(E_ERROR, "Undefined class constant '%s::%s'", class_name, constant_name);
416: }
417: }
418: } else if (!ce) {
419: retval = 0;
420: }
421: efree(class_name);
422: goto finish;
423: }
424:
425: /* non-class constant */
426: if ((colon = zend_memrchr(name, '\\', name_len)) != NULL) {
427: /* compound constant name */
428: int prefix_len = colon - name;
429: int const_name_len = name_len - prefix_len - 1;
430: char *constant_name = colon + 1;
431: char *lcname;
432: int found_const = 0;
433:
434: lcname = zend_str_tolower_dup(name, prefix_len);
435: /* Check for namespace constant */
436:
437: /* Concatenate lowercase namespace name and constant name */
438: lcname = erealloc(lcname, prefix_len + 1 + const_name_len + 1);
439: lcname[prefix_len] = '\\';
440: memcpy(lcname + prefix_len + 1, constant_name, const_name_len + 1);
441:
442: if (zend_hash_find(EG(zend_constants), lcname, prefix_len + 1 + const_name_len + 1, (void **) &c) == SUCCESS) {
443: found_const = 1;
444: } else {
445: /* try lowercase */
446: zend_str_tolower(lcname + prefix_len + 1, const_name_len);
447: if (zend_hash_find(EG(zend_constants), lcname, prefix_len + 1 + const_name_len + 1, (void **) &c) == SUCCESS) {
448: if ((c->flags & CONST_CS) == 0) {
449: found_const = 1;
450: }
451: }
452: }
453: efree(lcname);
454: if(found_const) {
455: *result = c->value;
456: zval_update_constant_ex(&result, (void*)1, NULL TSRMLS_CC);
457: zval_copy_ctor(result);
458: Z_SET_REFCOUNT_P(result, 1);
459: Z_UNSET_ISREF_P(result);
460: return 1;
461: }
462: /* name requires runtime resolution, need to check non-namespaced name */
463: if ((flags & IS_CONSTANT_UNQUALIFIED) != 0) {
464: name = constant_name;
465: name_len = const_name_len;
466: return zend_get_constant(name, name_len, result TSRMLS_CC);
467: }
468: retval = 0;
469: finish:
470: if (retval) {
471: zval_update_constant_ex(ret_constant, (void*)1, ce TSRMLS_CC);
472: *result = **ret_constant;
473: zval_copy_ctor(result);
474: INIT_PZVAL(result);
475: }
476:
477: return retval;
478: }
479:
480: return zend_get_constant(name, name_len, result TSRMLS_CC);
481: }
482:
483: ZEND_API int zend_register_constant(zend_constant *c TSRMLS_DC)
484: {
485: char *lowercase_name = NULL;
486: char *name;
487: int ret = SUCCESS;
488:
489: #if 0
490: printf("Registering constant for module %d\n", c->module_number);
491: #endif
492:
493: if (!(c->flags & CONST_CS)) {
494: /* keep in mind that c->name_len already contains the '\0' */
495: lowercase_name = estrndup(c->name, c->name_len-1);
496: zend_str_tolower(lowercase_name, c->name_len-1);
497: name = lowercase_name;
498: } else {
499: char *slash = strrchr(c->name, '\\');
500: if(slash) {
501: lowercase_name = estrndup(c->name, c->name_len-1);
502: zend_str_tolower(lowercase_name, slash-c->name);
503: name = lowercase_name;
504: } else {
505: name = c->name;
506: }
507: }
508:
509: /* Check if the user is trying to define the internal pseudo constant name __COMPILER_HALT_OFFSET__ */
510: if ((c->name_len == sizeof("__COMPILER_HALT_OFFSET__")
511: && !memcmp(name, "__COMPILER_HALT_OFFSET__", sizeof("__COMPILER_HALT_OFFSET__")-1))
512: || zend_hash_add(EG(zend_constants), name, c->name_len, (void *) c, sizeof(zend_constant), NULL)==FAILURE) {
513:
514: /* The internal __COMPILER_HALT_OFFSET__ is prefixed by NULL byte */
515: if (c->name[0] == '\0' && c->name_len > sizeof("\0__COMPILER_HALT_OFFSET__")
516: && memcmp(name, "\0__COMPILER_HALT_OFFSET__", sizeof("\0__COMPILER_HALT_OFFSET__")) == 0) {
517: name++;
518: }
519: zend_error(E_NOTICE,"Constant %s already defined", name);
520: free(c->name);
521: if (!(c->flags & CONST_PERSISTENT)) {
522: zval_dtor(&c->value);
523: }
524: ret = FAILURE;
525: }
526: if (lowercase_name) {
527: efree(lowercase_name);
528: }
529: return ret;
530: }
531:
532:
533: /*
534: * Local variables:
535: * tab-width: 4
536: * c-basic-offset: 4
537: * indent-tabs-mode: t
538: * End:
539: */
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