94 lines
3.1 KiB
C
94 lines
3.1 KiB
C
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/*
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+----------------------------------------------------------------------+
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| Copyright © The PHP Group and Contributors. |
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+----------------------------------------------------------------------+
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| This source file is subject to the Modified BSD License that is |
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| bundled with this package in the file LICENSE, and is available |
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| through the World Wide Web at <https://www.php.net/license/>. |
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| SPDX-License-Identifier: BSD-3-Clause |
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+----------------------------------------------------------------------+
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| Authors: Sammy Kaye Powers <sammyk@php.net> |
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| Dmitry Stogov <dmitry@php.net> |
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+----------------------------------------------------------------------+
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*/
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#include "php.h"
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#include "zend_system_id.h"
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#include "zend_extensions.h"
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#include "ext/standard/md5.h"
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#include "ext/hash/php_hash.h"
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ZEND_API char zend_system_id[32];
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static PHP_MD5_CTX context;
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static int finalized = 0;
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ZEND_API zend_result zend_add_system_entropy(const char *module_name, const char *hook_name, const void *data, size_t size)
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{
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if (finalized == 0) {
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PHP_MD5Update(&context, module_name, strlen(module_name));
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PHP_MD5Update(&context, hook_name, strlen(hook_name));
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if (size) {
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PHP_MD5Update(&context, data, size);
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}
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return SUCCESS;
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}
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return FAILURE;
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}
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#define ZEND_BIN_ID "BIN_" ZEND_TOSTR(SIZEOF_INT) ZEND_TOSTR(SIZEOF_LONG) ZEND_TOSTR(SIZEOF_SIZE_T) ZEND_TOSTR(SIZEOF_ZEND_LONG) ZEND_TOSTR(ZEND_MM_ALIGNMENT)
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void zend_startup_system_id(void)
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{
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PHP_MD5Init(&context);
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PHP_MD5Update(&context, PHP_VERSION, sizeof(PHP_VERSION)-1);
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PHP_MD5Update(&context, ZEND_EXTENSION_BUILD_ID, sizeof(ZEND_EXTENSION_BUILD_ID)-1);
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PHP_MD5Update(&context, ZEND_BIN_ID, sizeof(ZEND_BIN_ID)-1);
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if (strstr(PHP_VERSION, "-dev") != 0) {
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/* Development versions may be changed from build to build */
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PHP_MD5Update(&context, __DATE__, sizeof(__DATE__)-1);
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PHP_MD5Update(&context, __TIME__, sizeof(__TIME__)-1);
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}
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zend_system_id[0] = '\0';
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}
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#define ZEND_HOOK_AST_PROCESS (1 << 0)
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#define ZEND_HOOK_COMPILE_FILE (1 << 1)
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#define ZEND_HOOK_EXECUTE_EX (1 << 2)
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#define ZEND_HOOK_EXECUTE_INTERNAL (1 << 3)
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#define ZEND_HOOK_INTERRUPT_FUNCTION (1 << 4)
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void zend_finalize_system_id(void)
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{
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unsigned char digest[16];
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uint8_t hooks = 0;
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if (zend_ast_process) {
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hooks |= ZEND_HOOK_AST_PROCESS;
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}
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if (zend_compile_file != compile_file) {
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hooks |= ZEND_HOOK_COMPILE_FILE;
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}
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if (zend_execute_ex != execute_ex) {
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hooks |= ZEND_HOOK_EXECUTE_EX;
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}
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if (zend_execute_internal) {
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hooks |= ZEND_HOOK_EXECUTE_INTERNAL;
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}
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if (zend_interrupt_function) {
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hooks |= ZEND_HOOK_INTERRUPT_FUNCTION;
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}
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PHP_MD5Update(&context, &hooks, sizeof hooks);
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for (int16_t i = 0; i < 256; i++) {
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if (zend_get_user_opcode_handler((uint8_t) i) != NULL) {
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PHP_MD5Update(&context, &i, sizeof i);
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}
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}
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PHP_MD5Final(digest, &context);
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php_hash_bin2hex(zend_system_id, digest, sizeof digest);
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finalized = 1;
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}
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