mirror of
https://github.com/php/php-src.git
synced 2024-12-15 12:54:57 +08:00
67f6974373
post-PHP 4.0.0)
554 lines
16 KiB
C
554 lines
16 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2000 Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 0.92 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available at through the world-wide-web at |
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| http://www.zend.com/license/0_92.txt. |
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| If you did not receive a copy of the Zend license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@zend.com> |
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| Zeev Suraski <zeev@zend.com> |
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+----------------------------------------------------------------------+
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*/
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#include "zend.h"
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#include "zend_extensions.h"
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#include "modules.h"
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#include "zend_constants.h"
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#include "zend_list.h"
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#include "zend_API.h"
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#include "zend_builtin_functions.h"
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#ifdef ZTS
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# define GLOBAL_FUNCTION_TABLE global_function_table
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# define GLOBAL_CLASS_TABLE global_class_table
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# define GLOBAL_CONSTANTS_TABLE global_constants_table
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#else
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# define GLOBAL_FUNCTION_TABLE CG(function_table)
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# define GLOBAL_CLASS_TABLE CG(class_table)
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# define GLOBAL_CONSTANTS_TABLE CG(zend_constants)
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#endif
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/* true multithread-shared globals */
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ZEND_API zend_class_entry zend_standard_class_def;
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ZEND_API int (*zend_printf)(const char *format, ...);
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ZEND_API zend_write_func_t zend_write;
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ZEND_API FILE *(*zend_fopen)(const char *filename, char **opened_path);
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ZEND_API void (*zend_block_interruptions)(void);
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ZEND_API void (*zend_unblock_interruptions)(void);
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ZEND_API void (*zend_ticks_function)(int ticks);
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static void (*zend_message_dispatcher_p)(long message, void *data);
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static int (*zend_get_ini_entry_p)(char *name, uint name_length, zval *contents);
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#if ZEND_NEW_ERROR_HANDLING
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static void (*zend_error_cb)(int type, const char *format, ...);
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#else
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ZEND_API void (*zend_error_cb)(int type, const char *format, ...);
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#endif
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#ifdef ZTS
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ZEND_API int compiler_globals_id;
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ZEND_API int executor_globals_id;
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ZEND_API int alloc_globals_id;
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HashTable *global_function_table;
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HashTable *global_class_table;
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HashTable *global_constants_table;
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#endif
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zend_utility_values zend_uv;
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ZEND_API zval zval_used_for_init; /* True global variable */
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/* version information */
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static char *zend_version_info;
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static uint zend_version_info_length;
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#define ZEND_CORE_VERSION_INFO "Zend Engine v" ZEND_VERSION ", Copyright (c) 1998-2000 Zend Technologies Ltd.\n"
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#define PRINT_ZVAL_INDENT 4
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static void print_hash(HashTable *ht, int indent)
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{
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zval **tmp;
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char *string_key;
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unsigned long num_key;
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int i;
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for (i=0; i<indent; i++) {
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ZEND_PUTS(" ");
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}
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ZEND_PUTS("(\n");
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indent += PRINT_ZVAL_INDENT;
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zend_hash_internal_pointer_reset(ht);
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while (zend_hash_get_current_data(ht, (void **) &tmp) == SUCCESS) {
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for (i=0; i<indent; i++) {
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ZEND_PUTS(" ");
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}
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ZEND_PUTS("[");
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switch (zend_hash_get_current_key(ht, &string_key, &num_key)) {
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case HASH_KEY_IS_STRING:
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ZEND_PUTS(string_key);
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efree(string_key);
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break;
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case HASH_KEY_IS_LONG:
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zend_printf("%ld",num_key);
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break;
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}
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ZEND_PUTS("] => ");
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zend_print_zval_r(*tmp, indent+PRINT_ZVAL_INDENT);
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ZEND_PUTS("\n");
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zend_hash_move_forward(ht);
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}
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indent -= PRINT_ZVAL_INDENT;
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for (i=0; i<indent; i++) {
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ZEND_PUTS(" ");
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}
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ZEND_PUTS(")\n");
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}
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ZEND_API void zend_make_printable_zval(zval *expr, zval *expr_copy, int *use_copy)
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{
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if (expr->type==IS_STRING) {
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*use_copy = 0;
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return;
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}
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switch (expr->type) {
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case IS_NULL:
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expr_copy->value.str.len = 0;
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expr_copy->value.str.val = empty_string;
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break;
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case IS_BOOL:
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if (expr->value.lval) {
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expr_copy->value.str.len = 1;
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expr_copy->value.str.val = estrndup("1", 1);
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} else {
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expr_copy->value.str.len = 0;
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expr_copy->value.str.val = empty_string;
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}
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break;
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case IS_RESOURCE:
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expr_copy->value.str.val = (char *) emalloc(sizeof("Resource id #")-1 + MAX_LENGTH_OF_LONG);
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expr_copy->value.str.len = sprintf(expr_copy->value.str.val, "Resource id #%ld", expr->value.lval);
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break;
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case IS_ARRAY:
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expr_copy->value.str.len = sizeof("Array")-1;
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expr_copy->value.str.val = estrndup("Array", expr_copy->value.str.len);
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break;
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case IS_OBJECT: {
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zval function_name;
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ZVAL_STRING(&function_name,"__string_value",1);
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if (call_user_function(NULL, expr, &function_name, expr_copy, 0, NULL)==FAILURE) {
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expr_copy->value.str.len = sizeof("Object")-1;
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expr_copy->value.str.val = estrndup("Object", expr_copy->value.str.len);
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}
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efree(function_name.value.str.val);
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}
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break;
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default:
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*expr_copy = *expr;
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zval_copy_ctor(expr_copy);
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convert_to_string(expr_copy);
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break;
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}
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expr_copy->type = IS_STRING;
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*use_copy = 1;
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}
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ZEND_API int zend_print_zval(zval *expr, int indent)
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{
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return zend_print_zval_ex(zend_write, expr, indent);
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}
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ZEND_API int zend_print_zval_ex(zend_write_func_t write_func, zval *expr, int indent)
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{
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zval expr_copy;
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int use_copy;
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zend_make_printable_zval(expr, &expr_copy, &use_copy);
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if (use_copy) {
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expr = &expr_copy;
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}
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if (expr->value.str.len==0) { /* optimize away empty strings */
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if (use_copy) {
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zval_dtor(expr);
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}
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return 0;
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}
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write_func(expr->value.str.val,expr->value.str.len);
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if (use_copy) {
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zval_dtor(expr);
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}
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return expr->value.str.len;
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}
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ZEND_API void zend_print_zval_r(zval *expr, int indent)
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{
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zend_print_zval_r_ex(zend_write, expr, indent);
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}
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ZEND_API void zend_print_zval_r_ex(zend_write_func_t write_func, zval *expr, int indent)
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{
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switch(expr->type) {
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case IS_ARRAY:
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ZEND_PUTS("Array\n");
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print_hash(expr->value.ht,indent);
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break;
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case IS_OBJECT:
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zend_printf("%s Object\n", expr->value.obj.ce->name);
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print_hash(expr->value.obj.properties, indent);
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break;
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default:
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zend_print_variable(expr);
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break;
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}
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}
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static FILE *zend_fopen_wrapper(const char *filename, char **opened_path)
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{
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if (opened_path) {
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*opened_path = strdup(filename);
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}
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return fopen(filename, "r");
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}
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static void register_standard_class(void)
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{
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zend_standard_class_def.type = ZEND_INTERNAL_CLASS;
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zend_standard_class_def.name_length = sizeof("stdClass") - 1;
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zend_standard_class_def.name = zend_strndup("stdClass", zend_standard_class_def.name_length);
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zend_standard_class_def.parent = NULL;
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zend_hash_init(&zend_standard_class_def.default_properties, 0, NULL, ZVAL_PTR_DTOR, 1);
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zend_hash_init(&zend_standard_class_def.function_table, 0, NULL, ZEND_FUNCTION_DTOR, 1);
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zend_standard_class_def.handle_function_call = NULL;
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zend_standard_class_def.handle_property_get = NULL;
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zend_standard_class_def.handle_property_set = NULL;
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zend_standard_class_def.refcount = (int *) malloc(sizeof(int));
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*zend_standard_class_def.refcount = 1;
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zend_hash_add(GLOBAL_CLASS_TABLE, "stdclass", sizeof("stdclass"), &zend_standard_class_def, sizeof(zend_class_entry), NULL);
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}
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#ifdef ZTS
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static void compiler_globals_ctor(zend_compiler_globals *compiler_globals)
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{
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zend_function tmp_func;
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zend_class_entry tmp_class;
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compiler_globals->function_table = (HashTable *) malloc(sizeof(HashTable));
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zend_hash_init(compiler_globals->function_table, 100, NULL, ZEND_FUNCTION_DTOR, 1);
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zend_hash_copy(compiler_globals->function_table, global_function_table, NULL, &tmp_func, sizeof(zend_function));
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compiler_globals->class_table = (HashTable *) malloc(sizeof(HashTable));
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zend_hash_init(compiler_globals->class_table, 10, NULL, ZEND_CLASS_DTOR, 1);
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zend_hash_copy(compiler_globals->class_table, global_class_table, (copy_ctor_func_t) zend_class_add_ref, &tmp_class, sizeof(zend_class_entry));
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compiler_globals->extended_info = 0;
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}
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static void compiler_globals_dtor(zend_compiler_globals *compiler_globals)
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{
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if (compiler_globals->function_table != global_function_table) {
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zend_hash_destroy(compiler_globals->function_table);
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free(compiler_globals->function_table);
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}
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if (compiler_globals->class_table != global_class_table) {
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zend_hash_destroy(compiler_globals->class_table);
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free(compiler_globals->class_table);
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}
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}
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static void executor_globals_ctor(zend_executor_globals *executor_globals)
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{
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if (global_constants_table) {
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zend_startup_constants(ELS_C);
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zend_copy_constants(executor_globals->zend_constants, global_constants_table);
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}
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zend_init_rsrc_plist(ELS_C);
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}
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static void executor_globals_dtor(zend_executor_globals *executor_globals)
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{
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zend_shutdown_constants(ELS_C);
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zend_destroy_rsrc_plist(ELS_C);
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}
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static void alloc_globals_ctor(zend_alloc_globals *alloc_globals)
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{
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start_memory_manager(ALS_C);
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}
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#endif
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int zend_startup(zend_utility_functions *utility_functions, char **extensions, int start_builtin_functions)
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{
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#ifdef ZTS
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zend_compiler_globals *compiler_globals;
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zend_executor_globals *executor_globals;
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alloc_globals_id = ts_allocate_id(sizeof(zend_alloc_globals), (ts_allocate_ctor) alloc_globals_ctor, NULL);
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#else
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start_memory_manager(ALS_C);
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#endif
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/* Set up utility functions and values */
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zend_error_cb = utility_functions->error_function;
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zend_printf = utility_functions->printf_function;
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zend_write = (zend_write_func_t) utility_functions->write_function;
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zend_fopen = utility_functions->fopen_function;
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if (!zend_fopen) {
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zend_fopen = zend_fopen_wrapper;
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}
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zend_message_dispatcher_p = utility_functions->message_handler;
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zend_block_interruptions = utility_functions->block_interruptions;
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zend_unblock_interruptions = utility_functions->unblock_interruptions;
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zend_get_ini_entry_p = utility_functions->get_ini_entry;
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zend_ticks_function = utility_functions->ticks_function;
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zend_compile_files = compile_files;
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zend_execute = execute;
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zend_llist_init(&zend_extensions, sizeof(zend_extension), (void (*)(void *)) zend_extension_dtor, 1);
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/* set up version */
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zend_version_info = strdup(ZEND_CORE_VERSION_INFO);
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zend_version_info_length = sizeof(ZEND_CORE_VERSION_INFO)-1;
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GLOBAL_FUNCTION_TABLE = (HashTable *) malloc(sizeof(HashTable));
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GLOBAL_CLASS_TABLE = (HashTable *) malloc(sizeof(HashTable));
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zend_hash_init(GLOBAL_FUNCTION_TABLE, 100, NULL, ZEND_FUNCTION_DTOR, 1);
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zend_hash_init(GLOBAL_CLASS_TABLE, 10, NULL, ZEND_CLASS_DTOR, 1);
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register_standard_class();
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zend_hash_init(&module_registry, 50, NULL, ZEND_MODULE_DTOR, 1);
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zend_init_rsrc_list_dtors();
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/* This zval can be used to initialize allocate zval's to an uninit'ed value */
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zval_used_for_init.is_ref = 0;
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zval_used_for_init.refcount = 1;
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zval_used_for_init.type = IS_NULL;
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#ifdef ZTS
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global_constants_table = NULL;
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compiler_globals_id = ts_allocate_id(sizeof(zend_compiler_globals), (void (*)(void *)) compiler_globals_ctor, (void (*)(void *)) compiler_globals_dtor);
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executor_globals_id = ts_allocate_id(sizeof(zend_executor_globals), (void (*)(void *)) executor_globals_ctor, (void (*)(void *)) executor_globals_dtor);
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compiler_globals = ts_resource(compiler_globals_id);
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executor_globals = ts_resource(executor_globals_id);
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compiler_globals_dtor(compiler_globals);
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compiler_globals->function_table = GLOBAL_FUNCTION_TABLE;
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compiler_globals->class_table = GLOBAL_CLASS_TABLE;
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zend_startup_constants(executor_globals);
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GLOBAL_CONSTANTS_TABLE = EG(zend_constants);
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#else
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zend_startup_constants();
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#endif
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zend_register_standard_constants(ELS_C);
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#ifndef ZTS
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zend_init_rsrc_plist(ELS_C);
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#endif
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if (start_builtin_functions) {
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zend_startup_builtin_functions();
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}
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return SUCCESS;
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}
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void zend_shutdown()
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{
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#ifndef ZTS
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zend_destroy_rsrc_plist();
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#endif
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zend_destroy_rsrc_list_dtors();
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zend_hash_destroy(&module_registry);
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zend_hash_destroy(GLOBAL_FUNCTION_TABLE);
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free(GLOBAL_FUNCTION_TABLE);
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zend_hash_destroy(GLOBAL_CLASS_TABLE);
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free(GLOBAL_CLASS_TABLE);
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zend_shutdown_extensions();
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free(zend_version_info);
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#ifndef ZTS
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zend_shutdown_constants();
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#endif
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}
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void zend_set_utility_values(zend_utility_values *utility_values)
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{
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zend_uv = *utility_values;
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zend_uv.import_use_extension_length = strlen(zend_uv.import_use_extension);
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}
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/* this should be compatible with the standard zenderror */
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void zenderror(char *error)
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{
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zend_error(E_PARSE, error);
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}
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BEGIN_EXTERN_C()
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ZEND_API void zend_bailout()
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{
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CLS_FETCH();
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ELS_FETCH();
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CG(unclean_shutdown) = 1;
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longjmp(EG(bailout), FAILURE);
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}
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END_EXTERN_C()
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void zend_append_version_info(zend_extension *extension)
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{
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char *new_info;
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uint new_info_length;
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new_info_length = sizeof(" with v, by \n")
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+ strlen(extension->name)
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+ strlen(extension->version)
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+ strlen(extension->copyright)
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+ strlen(extension->author);
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new_info = (char *) malloc(new_info_length+1);
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sprintf(new_info, " with %s v%s, %s, by %s\n", extension->name, extension->version, extension->copyright, extension->author);
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zend_version_info = (char *) realloc(zend_version_info, zend_version_info_length+new_info_length+1);
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strcat(zend_version_info, new_info);
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zend_version_info_length += new_info_length;
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free(new_info);
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}
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ZEND_API char *get_zend_version()
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{
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return zend_version_info;
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}
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void zend_activate(CLS_D ELS_DC)
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{
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init_compiler(CLS_C ELS_CC);
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init_executor(CLS_C ELS_CC);
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startup_scanner(CLS_C);
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}
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void zend_activate_modules()
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{
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zend_hash_apply(&module_registry, (int (*)(void *)) module_registry_request_startup);
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}
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void zend_deactivate(CLS_D ELS_DC)
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{
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zend_hash_apply(&module_registry, (int (*)(void *)) module_registry_cleanup);
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shutdown_scanner(CLS_C);
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shutdown_executor(ELS_C);
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shutdown_compiler(CLS_C);
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}
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BEGIN_EXTERN_C()
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ZEND_API void zend_message_dispatcher(long message, void *data)
|
|
{
|
|
if (zend_message_dispatcher_p) {
|
|
zend_message_dispatcher_p(message, data);
|
|
}
|
|
}
|
|
END_EXTERN_C()
|
|
|
|
|
|
ZEND_API int zend_get_ini_entry(char *name, uint name_length, zval *contents)
|
|
{
|
|
if (zend_get_ini_entry_p) {
|
|
return zend_get_ini_entry_p(name, name_length, contents);
|
|
} else {
|
|
return FAILURE;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
#if ZEND_NEW_ERROR_HANDLING
|
|
|
|
#define ZEND_ERROR_BUFFER_SIZE 1024
|
|
|
|
ZEND_API void zend_error(int type, const char *format, ...)
|
|
{
|
|
va_list args;
|
|
zval **params;
|
|
zval retval;
|
|
zval error_type, error_message;
|
|
ELS_FETCH();
|
|
CLS_FETCH();
|
|
|
|
INIT_PZVAL(&error_message);
|
|
error_message.value.str.val = (char *) emalloc(ZEND_ERROR_BUFFER_SIZE);
|
|
|
|
va_start(args, format);
|
|
/* error_message.value.str.len = vsnprintf(error_message->value.str.val, error_message->value.str.len-1, format, args); */
|
|
error_message.value.str.len = vsprintf(error_message.value.str.val, format, args);
|
|
error_message.type = IS_STRING;
|
|
va_end(args);
|
|
|
|
/* if we don't have a user defined error handler */
|
|
if (!EG(user_error_handler)) {
|
|
zend_error_cb(type, error_message.value.str.val);
|
|
efree(error_message.value.str.val);
|
|
return;
|
|
}
|
|
|
|
/* or the error may not be safe to handle in user-space */
|
|
switch (type) {
|
|
case E_ERROR:
|
|
case E_PARSE:
|
|
case E_CORE_ERROR:
|
|
case E_CORE_WARNING:
|
|
case E_COMPILE_ERROR:
|
|
case E_COMPILE_WARNING:
|
|
zend_error_cb(type, error_message.value.str.val);
|
|
efree(error_message.value.str.val);
|
|
return;
|
|
}
|
|
|
|
/* Handle the error in user space */
|
|
|
|
error_type.value.lval = type;
|
|
error_type.type = IS_LONG;
|
|
|
|
params = (zval **) emalloc(sizeof(zval *)*2);
|
|
params[0] = &error_type;
|
|
params[1] = &error_message;
|
|
|
|
if (call_user_function(CG(function_table), NULL, EG(user_error_handler), &retval, 2, params)==SUCCESS) {
|
|
} else {
|
|
/* The user error handler failed, use built-in error handler */
|
|
zend_error_cb(type, error_message.value.str.val);
|
|
}
|
|
efree(params);
|
|
efree(error_message.value.str.val);
|
|
}
|
|
|
|
#endif |