/src/php-src/Zend/zend_system_id.c
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1 | | /* |
2 | | +----------------------------------------------------------------------+ |
3 | | | Copyright (c) The PHP Group | |
4 | | +----------------------------------------------------------------------+ |
5 | | | This source file is subject to version 3.01 of the PHP license, | |
6 | | | that is bundled with this package in the file LICENSE, and is | |
7 | | | available through the world-wide-web at the following url: | |
8 | | | https://www.php.net/license/3_01.txt | |
9 | | | If you did not receive a copy of the PHP license and are unable to | |
10 | | | obtain it through the world-wide-web, please send a note to | |
11 | | | license@php.net so we can mail you a copy immediately. | |
12 | | +----------------------------------------------------------------------+ |
13 | | | Authors: Sammy Kaye Powers <sammyk@php.net> | |
14 | | | Dmitry Stogov <dmitry@php.net> | |
15 | | +----------------------------------------------------------------------+ |
16 | | */ |
17 | | |
18 | | #include "php.h" |
19 | | #include "zend_system_id.h" |
20 | | #include "zend_extensions.h" |
21 | | #include "ext/standard/md5.h" |
22 | | #include "ext/hash/php_hash.h" |
23 | | |
24 | | ZEND_API char zend_system_id[32]; |
25 | | |
26 | | static PHP_MD5_CTX context; |
27 | | static int finalized = 0; |
28 | | |
29 | | ZEND_API zend_result zend_add_system_entropy(const char *module_name, const char *hook_name, const void *data, size_t size) |
30 | 16 | { |
31 | 16 | if (finalized == 0) { |
32 | 16 | PHP_MD5Update(&context, module_name, strlen(module_name)); |
33 | 16 | PHP_MD5Update(&context, hook_name, strlen(hook_name)); |
34 | 16 | if (size) { |
35 | 16 | PHP_MD5Update(&context, data, size); |
36 | 16 | } |
37 | 16 | return SUCCESS; |
38 | 16 | } |
39 | 0 | return FAILURE; |
40 | 16 | } |
41 | | |
42 | 32 | #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) |
43 | | |
44 | | void zend_startup_system_id(void) |
45 | 16 | { |
46 | 16 | PHP_MD5Init(&context); |
47 | 16 | PHP_MD5Update(&context, PHP_VERSION, sizeof(PHP_VERSION)-1); |
48 | 16 | PHP_MD5Update(&context, ZEND_EXTENSION_BUILD_ID, sizeof(ZEND_EXTENSION_BUILD_ID)-1); |
49 | 16 | PHP_MD5Update(&context, ZEND_BIN_ID, sizeof(ZEND_BIN_ID)-1); |
50 | 16 | if (strstr(PHP_VERSION, "-dev") != 0) { |
51 | | /* Development versions may be changed from build to build */ |
52 | 16 | PHP_MD5Update(&context, __DATE__, sizeof(__DATE__)-1); |
53 | 16 | PHP_MD5Update(&context, __TIME__, sizeof(__TIME__)-1); |
54 | 16 | } |
55 | 16 | zend_system_id[0] = '\0'; |
56 | 16 | } |
57 | | |
58 | 0 | #define ZEND_HOOK_AST_PROCESS (1 << 0) |
59 | 0 | #define ZEND_HOOK_COMPILE_FILE (1 << 1) |
60 | 0 | #define ZEND_HOOK_EXECUTE_EX (1 << 2) |
61 | 0 | #define ZEND_HOOK_EXECUTE_INTERNAL (1 << 3) |
62 | 0 | #define ZEND_HOOK_INTERRUPT_FUNCTION (1 << 4) |
63 | | |
64 | | void zend_finalize_system_id(void) |
65 | 16 | { |
66 | 16 | unsigned char digest[16]; |
67 | 16 | uint8_t hooks = 0; |
68 | | |
69 | 16 | if (zend_ast_process) { |
70 | 0 | hooks |= ZEND_HOOK_AST_PROCESS; |
71 | 0 | } |
72 | 16 | if (zend_compile_file != compile_file) { |
73 | 0 | hooks |= ZEND_HOOK_COMPILE_FILE; |
74 | 0 | } |
75 | 16 | if (zend_execute_ex != execute_ex) { |
76 | 0 | hooks |= ZEND_HOOK_EXECUTE_EX; |
77 | 0 | } |
78 | 16 | if (zend_execute_internal) { |
79 | 0 | hooks |= ZEND_HOOK_EXECUTE_INTERNAL; |
80 | 0 | } |
81 | 16 | if (zend_interrupt_function) { |
82 | 0 | hooks |= ZEND_HOOK_INTERRUPT_FUNCTION; |
83 | 0 | } |
84 | 16 | PHP_MD5Update(&context, &hooks, sizeof hooks); |
85 | | |
86 | 4.11k | for (int16_t i = 0; i < 256; i++) { |
87 | 4.09k | if (zend_get_user_opcode_handler((uint8_t) i) != NULL) { |
88 | 0 | PHP_MD5Update(&context, &i, sizeof i); |
89 | 0 | } |
90 | 4.09k | } |
91 | | |
92 | 16 | PHP_MD5Final(digest, &context); |
93 | 16 | php_hash_bin2hex(zend_system_id, digest, sizeof digest); |
94 | 16 | finalized = 1; |
95 | 16 | } |