Imported from /home/lorry/working-area/delta_php2/php-5.4.13.tar.bz2.HEADphp-5.4.13master

1 files changed, 548 insertions, 0 deletions

diff --git a/Zend/zend_constants.c b/Zend/zend_constants.c
new file mode 100644
index 0000000..21580d3
--- /dev/null
+++ b/Zend/zend_constants.c
@@ -0,0 +1,548 @@
+/*
+   +----------------------------------------------------------------------+
+   | Zend Engine                                                          |
+   +----------------------------------------------------------------------+
+   | Copyright (c) 1998-2013 Zend Technologies Ltd. (http://www.zend.com) |
+   +----------------------------------------------------------------------+
+   | This source file is subject to version 2.00 of the Zend license,     |
+   | that is bundled with this package in the file LICENSE, and is        | 
+   | available through the world-wide-web at the following url:           |
+   | http://www.zend.com/license/2_00.txt.                                |
+   | If you did not receive a copy of the Zend license and are unable to  |
+   | obtain it through the world-wide-web, please send a note to          |
+   | license@zend.com so we can mail you a copy immediately.              |
+   +----------------------------------------------------------------------+
+   | Authors: Andi Gutmans <andi@zend.com>                                |
+   |          Zeev Suraski <zeev@zend.com>                                |
+   +----------------------------------------------------------------------+
+*/
+
+/* $Id$ */
+
+#include "zend.h"
+#include "zend_constants.h"
+#include "zend_execute.h"
+#include "zend_variables.h"
+#include "zend_operators.h"
+#include "zend_globals.h"
+
+
+void free_zend_constant(zend_constant *c)
+{
+	if (!(c->flags & CONST_PERSISTENT)) {
+		zval_dtor(&c->value);
+	}
+	str_free(c->name);
+}
+
+
+void copy_zend_constant(zend_constant *c)
+{
+	if (!IS_INTERNED(c->name)) {
+		c->name = zend_strndup(c->name, c->name_len - 1);
+	}
+	if (!(c->flags & CONST_PERSISTENT)) {
+		zval_copy_ctor(&c->value);
+	}
+}
+
+
+void zend_copy_constants(HashTable *target, HashTable *source)
+{
+	zend_constant tmp_constant;
+
+	zend_hash_copy(target, source, (copy_ctor_func_t) copy_zend_constant, &tmp_constant, sizeof(zend_constant));
+}
+
+
+static int clean_non_persistent_constant(const zend_constant *c TSRMLS_DC)
+{
+	return (c->flags & CONST_PERSISTENT) ? ZEND_HASH_APPLY_STOP : ZEND_HASH_APPLY_REMOVE;
+}
+
+
+static int clean_non_persistent_constant_full(const zend_constant *c TSRMLS_DC)
+{
+	return (c->flags & CONST_PERSISTENT) ? 0 : 1;
+}
+
+
+static int clean_module_constant(const zend_constant *c, int *module_number TSRMLS_DC)
+{
+	if (c->module_number == *module_number) {
+		return 1;
+	} else {
+		return 0;
+	}
+}
+
+
+void clean_module_constants(int module_number TSRMLS_DC)
+{
+	zend_hash_apply_with_argument(EG(zend_constants), (apply_func_arg_t) clean_module_constant, (void *) &module_number TSRMLS_CC);
+}
+
+
+int zend_startup_constants(TSRMLS_D)
+{
+	EG(zend_constants) = (HashTable *) malloc(sizeof(HashTable));
+
+	if (zend_hash_init(EG(zend_constants), 20, NULL, ZEND_CONSTANT_DTOR, 1)==FAILURE) {
+		return FAILURE;
+	}
+	return SUCCESS;
+}
+
+
+
+void zend_register_standard_constants(TSRMLS_D)
+{
+	REGISTER_MAIN_LONG_CONSTANT("E_ERROR", E_ERROR, CONST_PERSISTENT | CONST_CS);
+	REGISTER_MAIN_LONG_CONSTANT("E_RECOVERABLE_ERROR", E_RECOVERABLE_ERROR, CONST_PERSISTENT | CONST_CS);
+	REGISTER_MAIN_LONG_CONSTANT("E_WARNING", E_WARNING, CONST_PERSISTENT | CONST_CS);
+	REGISTER_MAIN_LONG_CONSTANT("E_PARSE", E_PARSE, CONST_PERSISTENT | CONST_CS);
+	REGISTER_MAIN_LONG_CONSTANT("E_NOTICE", E_NOTICE, CONST_PERSISTENT | CONST_CS);
+	REGISTER_MAIN_LONG_CONSTANT("E_STRICT", E_STRICT, CONST_PERSISTENT | CONST_CS);
+	REGISTER_MAIN_LONG_CONSTANT("E_DEPRECATED", E_DEPRECATED, CONST_PERSISTENT | CONST_CS);
+	REGISTER_MAIN_LONG_CONSTANT("E_CORE_ERROR", E_CORE_ERROR, CONST_PERSISTENT | CONST_CS);
+	REGISTER_MAIN_LONG_CONSTANT("E_CORE_WARNING", E_CORE_WARNING, CONST_PERSISTENT | CONST_CS);
+	REGISTER_MAIN_LONG_CONSTANT("E_COMPILE_ERROR", E_COMPILE_ERROR, CONST_PERSISTENT | CONST_CS);
+	REGISTER_MAIN_LONG_CONSTANT("E_COMPILE_WARNING", E_COMPILE_WARNING, CONST_PERSISTENT | CONST_CS);
+	REGISTER_MAIN_LONG_CONSTANT("E_USER_ERROR", E_USER_ERROR, CONST_PERSISTENT | CONST_CS);
+	REGISTER_MAIN_LONG_CONSTANT("E_USER_WARNING", E_USER_WARNING, CONST_PERSISTENT | CONST_CS);
+	REGISTER_MAIN_LONG_CONSTANT("E_USER_NOTICE", E_USER_NOTICE, CONST_PERSISTENT | CONST_CS);
+	REGISTER_MAIN_LONG_CONSTANT("E_USER_DEPRECATED", E_USER_DEPRECATED, CONST_PERSISTENT | CONST_CS);
+
+	REGISTER_MAIN_LONG_CONSTANT("E_ALL", E_ALL, CONST_PERSISTENT | CONST_CS);
+
+	REGISTER_MAIN_LONG_CONSTANT("DEBUG_BACKTRACE_PROVIDE_OBJECT", DEBUG_BACKTRACE_PROVIDE_OBJECT, CONST_PERSISTENT | CONST_CS);
+	REGISTER_MAIN_LONG_CONSTANT("DEBUG_BACKTRACE_IGNORE_ARGS", DEBUG_BACKTRACE_IGNORE_ARGS, CONST_PERSISTENT | CONST_CS);
+	/* true/false constants */
+	{
+		zend_constant c;
+	
+		c.flags = CONST_PERSISTENT | CONST_CT_SUBST;
+		c.module_number = 0;
+
+		c.name = zend_strndup(ZEND_STRL("TRUE"));
+		c.name_len = sizeof("TRUE");
+		c.value.value.lval = 1;
+		c.value.type = IS_BOOL;
+		zend_register_constant(&c TSRMLS_CC);
+		
+		c.name = zend_strndup(ZEND_STRL("FALSE"));
+		c.name_len = sizeof("FALSE");
+		c.value.value.lval = 0;
+		c.value.type = IS_BOOL;
+		zend_register_constant(&c TSRMLS_CC);
+
+		c.name = zend_strndup(ZEND_STRL("NULL"));
+		c.name_len = sizeof("NULL");
+		c.value.type = IS_NULL;
+		zend_register_constant(&c TSRMLS_CC);
+
+		c.flags = CONST_PERSISTENT | CONST_CS;
+
+		c.name = zend_strndup(ZEND_STRL("ZEND_THREAD_SAFE"));
+		c.name_len = sizeof("ZEND_THREAD_SAFE");
+		c.value.value.lval = ZTS_V;
+		c.value.type = IS_BOOL;
+		zend_register_constant(&c TSRMLS_CC);
+
+		c.name = zend_strndup(ZEND_STRL("ZEND_DEBUG_BUILD"));
+		c.name_len = sizeof("ZEND_DEBUG_BUILD");
+		c.value.value.lval = ZEND_DEBUG;
+		c.value.type = IS_BOOL;
+		zend_register_constant(&c TSRMLS_CC);
+	}
+}
+
+
+int zend_shutdown_constants(TSRMLS_D)
+{
+	zend_hash_destroy(EG(zend_constants));
+	free(EG(zend_constants));
+	return SUCCESS;
+}
+
+
+void clean_non_persistent_constants(TSRMLS_D)
+{
+	if (EG(full_tables_cleanup)) {
+		zend_hash_apply(EG(zend_constants), (apply_func_t) clean_non_persistent_constant_full TSRMLS_CC);
+	} else {
+		zend_hash_reverse_apply(EG(zend_constants), (apply_func_t) clean_non_persistent_constant TSRMLS_CC);
+	}
+}
+
+
+ZEND_API void zend_register_long_constant(const char *name, uint name_len, long lval, int flags, int module_number TSRMLS_DC)
+{
+	zend_constant c;
+	
+	c.value.type = IS_LONG;
+	c.value.value.lval = lval;
+	c.flags = flags;
+	c.name = zend_strndup(name, name_len-1);
+	c.name_len = name_len;
+	c.module_number = module_number;
+	zend_register_constant(&c TSRMLS_CC);
+}
+
+
+ZEND_API void zend_register_double_constant(const char *name, uint name_len, double dval, int flags, int module_number TSRMLS_DC)
+{
+	zend_constant c;
+	
+	c.value.type = IS_DOUBLE;
+	c.value.value.dval = dval;
+	c.flags = flags;
+	c.name = zend_strndup(name, name_len-1);
+	c.name_len = name_len;
+	c.module_number = module_number;
+	zend_register_constant(&c TSRMLS_CC);
+}
+
+
+ZEND_API void zend_register_stringl_constant(const char *name, uint name_len, char *strval, uint strlen, int flags, int module_number TSRMLS_DC)
+{
+	zend_constant c;
+	
+	c.value.type = IS_STRING;
+	c.value.value.str.val = strval;
+	c.value.value.str.len = strlen;
+	c.flags = flags;
+	c.name = zend_strndup(name, name_len-1);
+	c.name_len = name_len;
+	c.module_number = module_number;
+	zend_register_constant(&c TSRMLS_CC);
+}
+
+
+ZEND_API void zend_register_string_constant(const char *name, uint name_len, char *strval, int flags, int module_number TSRMLS_DC)
+{
+	zend_register_stringl_constant(name, name_len, strval, strlen(strval), flags, module_number TSRMLS_CC);
+}
+
+static int zend_get_special_constant(const char *name, uint name_len, zend_constant **c TSRMLS_DC)
+{
+	int ret;
+	static char haltoff[] = "__COMPILER_HALT_OFFSET__";
+
+	if (!EG(in_execution)) {
+		return 0;
+	} else if (name_len == sizeof("__CLASS__")-1 &&
+	          !memcmp(name, "__CLASS__", sizeof("__CLASS__")-1)) {
+		zend_constant tmp;
+
+		/* Returned constants may be cached, so they have to be stored */
+		if (EG(scope) && EG(scope)->name) {
+			int const_name_len;
+			char *const_name;
+			ALLOCA_FLAG(use_heap)
+			
+			const_name_len = sizeof("\0__CLASS__") + EG(scope)->name_length;
+			const_name = do_alloca(const_name_len, use_heap);
+			memcpy(const_name, "\0__CLASS__", sizeof("\0__CLASS__")-1);
+			zend_str_tolower_copy(const_name + sizeof("\0__CLASS__")-1, EG(scope)->name, EG(scope)->name_length);
+			if (zend_hash_find(EG(zend_constants), const_name, const_name_len, (void**)c) == FAILURE) {
+				zend_hash_add(EG(zend_constants), const_name, const_name_len, (void*)&tmp, sizeof(zend_constant), (void**)c);
+				memset(*c, 0, sizeof(zend_constant));
+				Z_STRVAL((**c).value) = estrndup(EG(scope)->name, EG(scope)->name_length);
+				Z_STRLEN((**c).value) = EG(scope)->name_length;
+				Z_TYPE((**c).value) = IS_STRING;
+			}
+			free_alloca(const_name, use_heap);
+		} else {
+			if (zend_hash_find(EG(zend_constants), "\0__CLASS__", sizeof("\0__CLASS__"), (void**)c) == FAILURE) {
+				zend_hash_add(EG(zend_constants), "\0__CLASS__", sizeof("\0__CLASS__"), (void*)&tmp, sizeof(zend_constant), (void**)c);
+				memset(*c, 0, sizeof(zend_constant));
+				Z_STRVAL((**c).value) = estrndup("", 0);
+				Z_STRLEN((**c).value) = 0;
+				Z_TYPE((**c).value) = IS_STRING;
+			}
+		}
+		return 1;
+	} else if (name_len == sizeof("__COMPILER_HALT_OFFSET__")-1 &&
+	          !memcmp(name, "__COMPILER_HALT_OFFSET__", sizeof("__COMPILER_HALT_OFFSET__")-1)) {
+		const char *cfilename;
+		char *haltname;
+		int len, clen;
+
+		cfilename = zend_get_executed_filename(TSRMLS_C);
+		clen = strlen(cfilename);
+		/* check for __COMPILER_HALT_OFFSET__ */
+		zend_mangle_property_name(&haltname, &len, haltoff,
+			sizeof("__COMPILER_HALT_OFFSET__") - 1, cfilename, clen, 0);
+		ret = zend_hash_find(EG(zend_constants), haltname, len+1, (void **) c);
+		efree(haltname);
+		return (ret == SUCCESS);
+	} else {
+		return 0;
+	}
+}
+
+
+ZEND_API int zend_get_constant(const char *name, uint name_len, zval *result TSRMLS_DC)
+{
+	zend_constant *c;
+	int retval = 1;
+	char *lookup_name;
+
+	if (zend_hash_find(EG(zend_constants), name, name_len+1, (void **) &c) == FAILURE) {
+		lookup_name = zend_str_tolower_dup(name, name_len);
+
+		if (zend_hash_find(EG(zend_constants), lookup_name, name_len+1, (void **) &c)==SUCCESS) {
+			if (c->flags & CONST_CS) {
+				retval=0;
+			}
+		} else {
+			retval = zend_get_special_constant(name, name_len, &c TSRMLS_CC);
+		}
+		efree(lookup_name);
+	}
+
+	if (retval) {
+		*result = c->value;
+		zval_copy_ctor(result);
+		Z_SET_REFCOUNT_P(result, 1);
+		Z_UNSET_ISREF_P(result);
+	}
+
+	return retval;
+}
+
+ZEND_API int zend_get_constant_ex(const char *name, uint name_len, zval *result, zend_class_entry *scope, ulong flags TSRMLS_DC)
+{
+	zend_constant *c;
+	int retval = 1;
+	const char *colon;
+	zend_class_entry *ce = NULL;
+	char *class_name;
+	zval **ret_constant;
+
+	/* Skip leading \\ */
+	if (name[0] == '\\') {
+		name += 1;
+		name_len -= 1;
+	}
+
+
+	if ((colon = zend_memrchr(name, ':', name_len)) &&
+	    colon > name && (*(colon - 1) == ':')) {
+		int class_name_len = colon - name - 1;
+		int const_name_len = name_len - class_name_len - 2;
+		const char *constant_name = colon + 1;
+		char *lcname;
+
+		class_name = estrndup(name, class_name_len);
+		lcname = zend_str_tolower_dup(class_name, class_name_len);
+		if (!scope) {
+			if (EG(in_execution)) {
+				scope = EG(scope);
+			} else {
+				scope = CG(active_class_entry);
+			}
+		}
+
+		if (class_name_len == sizeof("self")-1 &&
+		    !memcmp(lcname, "self", sizeof("self")-1)) {
+			if (scope) {
+				ce = scope;
+			} else {
+				zend_error(E_ERROR, "Cannot access self:: when no class scope is active");
+				retval = 0;
+			}
+			efree(lcname);
+		} else if (class_name_len == sizeof("parent")-1 &&
+		           !memcmp(lcname, "parent", sizeof("parent")-1)) {
+			if (!scope) {
+				zend_error(E_ERROR, "Cannot access parent:: when no class scope is active");
+			} else if (!scope->parent) {
+				zend_error(E_ERROR, "Cannot access parent:: when current class scope has no parent");
+			} else {
+				ce = scope->parent;
+			}
+			efree(lcname);
+		} else if (class_name_len == sizeof("static")-1 &&
+		           !memcmp(lcname, "static", sizeof("static")-1)) {
+			if (EG(called_scope)) {
+				ce = EG(called_scope);
+			} else {
+				zend_error(E_ERROR, "Cannot access static:: when no class scope is active");
+			}
+			efree(lcname);
+		} else {
+			efree(lcname);
+			ce = zend_fetch_class(class_name, class_name_len, flags TSRMLS_CC);
+		}
+		if (retval && ce) {
+			if (zend_hash_find(&ce->constants_table, constant_name, const_name_len+1, (void **) &ret_constant) != SUCCESS) {
+				retval = 0;
+				if ((flags & ZEND_FETCH_CLASS_SILENT) == 0) {
+					zend_error(E_ERROR, "Undefined class constant '%s::%s'", class_name, constant_name);
+				}
+			}
+		} else if (!ce) {
+			retval = 0;
+		}
+		efree(class_name);
+		goto finish;
+	}
+
+	/* non-class constant */
+	if ((colon = zend_memrchr(name, '\\', name_len)) != NULL) {
+		/* compound constant name */
+		int prefix_len = colon - name;
+		int const_name_len = name_len - prefix_len - 1;
+		const char *constant_name = colon + 1;
+		char *lcname;
+		int found_const = 0;
+
+		lcname = zend_str_tolower_dup(name, prefix_len);
+		/* Check for namespace constant */
+
+		/* Concatenate lowercase namespace name and constant name */
+		lcname = erealloc(lcname, prefix_len + 1 + const_name_len + 1);
+		lcname[prefix_len] = '\\';
+		memcpy(lcname + prefix_len + 1, constant_name, const_name_len + 1);
+
+		if (zend_hash_find(EG(zend_constants), lcname, prefix_len + 1 + const_name_len + 1, (void **) &c) == SUCCESS) {
+			found_const = 1;
+		} else {
+			/* try lowercase */
+			zend_str_tolower(lcname + prefix_len + 1, const_name_len);
+			if (zend_hash_find(EG(zend_constants), lcname, prefix_len + 1 + const_name_len + 1, (void **) &c) == SUCCESS) {
+				if ((c->flags & CONST_CS) == 0) {
+					found_const = 1;
+				}
+			}
+		}
+		efree(lcname);
+		if(found_const) {
+			*result = c->value;
+			zval_update_constant_ex(&result, (void*)1, NULL TSRMLS_CC);
+			zval_copy_ctor(result);
+			Z_SET_REFCOUNT_P(result, 1);
+			Z_UNSET_ISREF_P(result);
+			return 1;
+		}
+		/* name requires runtime resolution, need to check non-namespaced name */
+		if ((flags & IS_CONSTANT_UNQUALIFIED) != 0) {
+			name = constant_name;
+			name_len = const_name_len;
+			return zend_get_constant(name, name_len, result TSRMLS_CC);
+		}
+		retval = 0;
+finish:
+		if (retval) {
+			zval_update_constant_ex(ret_constant, (void*)1, ce TSRMLS_CC);
+			*result = **ret_constant;
+			zval_copy_ctor(result);
+			INIT_PZVAL(result);
+		}
+
+		return retval;
+	}
+
+	return zend_get_constant(name, name_len, result TSRMLS_CC);
+}
+
+zend_constant *zend_quick_get_constant(const zend_literal *key, ulong flags TSRMLS_DC)
+{
+	zend_constant *c;
+
+	if (zend_hash_quick_find(EG(zend_constants), Z_STRVAL(key->constant), Z_STRLEN(key->constant) + 1, key->hash_value, (void **) &c) == FAILURE) {
+		key++;
+		if (zend_hash_quick_find(EG(zend_constants), Z_STRVAL(key->constant), Z_STRLEN(key->constant) + 1, key->hash_value, (void **) &c) == FAILURE ||
+		    (c->flags & CONST_CS) != 0) {
+			if ((flags & (IS_CONSTANT_IN_NAMESPACE|IS_CONSTANT_UNQUALIFIED)) == (IS_CONSTANT_IN_NAMESPACE|IS_CONSTANT_UNQUALIFIED)) {
+				key++;
+				if (zend_hash_quick_find(EG(zend_constants), Z_STRVAL(key->constant), Z_STRLEN(key->constant) + 1, key->hash_value, (void **) &c) == FAILURE) {
+				    key++;
+					if (zend_hash_quick_find(EG(zend_constants), Z_STRVAL(key->constant), Z_STRLEN(key->constant) + 1, key->hash_value, (void **) &c) == FAILURE ||
+					    (c->flags & CONST_CS) != 0) {
+
+						key--;
+						if (!zend_get_special_constant(Z_STRVAL(key->constant), Z_STRLEN(key->constant), &c TSRMLS_CC)) {
+							return NULL;
+						}
+					}
+				}
+			} else {
+				key--;
+				if (!zend_get_special_constant(Z_STRVAL(key->constant), Z_STRLEN(key->constant), &c TSRMLS_CC)) {
+					return NULL;
+				}
+			}
+		}
+	}
+	return c;
+}
+
+ZEND_API int zend_register_constant(zend_constant *c TSRMLS_DC)
+{
+	char *lowercase_name = NULL;
+	char *name;
+	int ret = SUCCESS;
+	ulong chash = 0;
+
+#if 0
+	printf("Registering constant for module %d\n", c->module_number);
+#endif
+
+	if (!(c->flags & CONST_CS)) {
+		/* keep in mind that c->name_len already contains the '\0' */
+		lowercase_name = estrndup(c->name, c->name_len-1);
+		zend_str_tolower(lowercase_name, c->name_len-1);
+		lowercase_name = (char*)zend_new_interned_string(lowercase_name, c->name_len, 1 TSRMLS_CC);
+		name = lowercase_name;
+		chash = IS_INTERNED(lowercase_name) ? INTERNED_HASH(lowercase_name) : 0;
+	} else {
+		char *slash = strrchr(c->name, '\\');
+		if(slash) {
+			lowercase_name = estrndup(c->name, c->name_len-1);
+			zend_str_tolower(lowercase_name, slash-c->name);
+			lowercase_name = (char*)zend_new_interned_string(lowercase_name, c->name_len, 1 TSRMLS_CC);
+			name = lowercase_name;
+			
+			chash = IS_INTERNED(lowercase_name) ? INTERNED_HASH(lowercase_name) : 0;
+		} else {
+			name = c->name;
+		}
+	}
+	if (chash == 0) {
+		chash = zend_hash_func(name, c->name_len);
+	}
+
+	/* Check if the user is trying to define the internal pseudo constant name __COMPILER_HALT_OFFSET__ */
+	if ((c->name_len == sizeof("__COMPILER_HALT_OFFSET__")
+		&& !memcmp(name, "__COMPILER_HALT_OFFSET__", sizeof("__COMPILER_HALT_OFFSET__")-1))
+		|| zend_hash_quick_add(EG(zend_constants), name, c->name_len, chash, (void *) c, sizeof(zend_constant), NULL)==FAILURE) {
+		
+		/* The internal __COMPILER_HALT_OFFSET__ is prefixed by NULL byte */
+		if (c->name[0] == '\0' && c->name_len > sizeof("\0__COMPILER_HALT_OFFSET__")
+			&& memcmp(name, "\0__COMPILER_HALT_OFFSET__", sizeof("\0__COMPILER_HALT_OFFSET__")) == 0) {
+			name++;
+		}
+		zend_error(E_NOTICE,"Constant %s already defined", name);
+		str_free(c->name);
+		if (!(c->flags & CONST_PERSISTENT)) {
+			zval_dtor(&c->value);
+		}
+		ret = FAILURE;
+	}
+	if (lowercase_name && !IS_INTERNED(lowercase_name)) {
+		efree(lowercase_name);
+	}
+	return ret;
+}
+
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * indent-tabs-mode: t
+ * End:
+ */