/src/php-src/Zend/zend_system_id.c
Line | Count | Source |
1 | | /* |
2 | | +----------------------------------------------------------------------+ |
3 | | | Copyright © The PHP Group and Contributors. | |
4 | | +----------------------------------------------------------------------+ |
5 | | | This source file is subject to the Modified BSD License that is | |
6 | | | bundled with this package in the file LICENSE, and is available | |
7 | | | through the World Wide Web at <https://www.php.net/license/>. | |
8 | | | | |
9 | | | SPDX-License-Identifier: BSD-3-Clause | |
10 | | +----------------------------------------------------------------------+ |
11 | | | Authors: Sammy Kaye Powers <sammyk@php.net> | |
12 | | | Dmitry Stogov <dmitry@php.net> | |
13 | | +----------------------------------------------------------------------+ |
14 | | */ |
15 | | |
16 | | #include "php.h" |
17 | | #include "zend_system_id.h" |
18 | | #include "zend_extensions.h" |
19 | | #include "ext/standard/md5.h" |
20 | | #include "ext/hash/php_hash.h" |
21 | | |
22 | | ZEND_API char zend_system_id[32]; |
23 | | |
24 | | static PHP_MD5_CTX context; |
25 | | static int finalized = 0; |
26 | | |
27 | | ZEND_API zend_result zend_add_system_entropy(const char *module_name, const char *hook_name, const void *data, size_t size) |
28 | 2 | { |
29 | 2 | if (finalized == 0) { |
30 | 2 | PHP_MD5Update(&context, module_name, strlen(module_name)); |
31 | 2 | PHP_MD5Update(&context, hook_name, strlen(hook_name)); |
32 | 2 | if (size) { |
33 | 2 | PHP_MD5Update(&context, data, size); |
34 | 2 | } |
35 | 2 | return SUCCESS; |
36 | 2 | } |
37 | 0 | return FAILURE; |
38 | 2 | } |
39 | | |
40 | 4 | #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) |
41 | | |
42 | | void zend_startup_system_id(void) |
43 | 2 | { |
44 | 2 | PHP_MD5Init(&context); |
45 | 2 | PHP_MD5Update(&context, PHP_VERSION, sizeof(PHP_VERSION)-1); |
46 | 2 | PHP_MD5Update(&context, ZEND_EXTENSION_BUILD_ID, sizeof(ZEND_EXTENSION_BUILD_ID)-1); |
47 | 2 | PHP_MD5Update(&context, ZEND_BIN_ID, sizeof(ZEND_BIN_ID)-1); |
48 | 2 | if (strstr(PHP_VERSION, "-dev") != 0) { |
49 | | /* Development versions may be changed from build to build */ |
50 | 2 | PHP_MD5Update(&context, __DATE__, sizeof(__DATE__)-1); |
51 | 2 | PHP_MD5Update(&context, __TIME__, sizeof(__TIME__)-1); |
52 | 2 | } |
53 | 2 | zend_system_id[0] = '\0'; |
54 | 2 | } |
55 | | |
56 | 0 | #define ZEND_HOOK_AST_PROCESS (1 << 0) |
57 | 0 | #define ZEND_HOOK_COMPILE_FILE (1 << 1) |
58 | 0 | #define ZEND_HOOK_EXECUTE_EX (1 << 2) |
59 | 0 | #define ZEND_HOOK_EXECUTE_INTERNAL (1 << 3) |
60 | 0 | #define ZEND_HOOK_INTERRUPT_FUNCTION (1 << 4) |
61 | | |
62 | | void zend_finalize_system_id(void) |
63 | 2 | { |
64 | 2 | unsigned char digest[16]; |
65 | 2 | uint8_t hooks = 0; |
66 | | |
67 | 2 | if (zend_ast_process) { |
68 | 0 | hooks |= ZEND_HOOK_AST_PROCESS; |
69 | 0 | } |
70 | 2 | if (zend_compile_file != compile_file) { |
71 | 0 | hooks |= ZEND_HOOK_COMPILE_FILE; |
72 | 0 | } |
73 | 2 | if (zend_execute_ex != execute_ex) { |
74 | 0 | hooks |= ZEND_HOOK_EXECUTE_EX; |
75 | 0 | } |
76 | 2 | if (zend_execute_internal) { |
77 | 0 | hooks |= ZEND_HOOK_EXECUTE_INTERNAL; |
78 | 0 | } |
79 | 2 | if (zend_interrupt_function) { |
80 | 0 | hooks |= ZEND_HOOK_INTERRUPT_FUNCTION; |
81 | 0 | } |
82 | 2 | PHP_MD5Update(&context, &hooks, sizeof hooks); |
83 | | |
84 | 514 | for (int16_t i = 0; i < 256; i++) { |
85 | 512 | if (zend_get_user_opcode_handler((uint8_t) i) != NULL) { |
86 | 0 | PHP_MD5Update(&context, &i, sizeof i); |
87 | 0 | } |
88 | 512 | } |
89 | | |
90 | 2 | PHP_MD5Final(digest, &context); |
91 | 2 | php_hash_bin2hex(zend_system_id, digest, sizeof digest); |
92 | 2 | finalized = 1; |
93 | 2 | } |