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added secure configuration loader (#28)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| /* | ||
| +----------------------------------------------------------------------+ | ||
| | Suhosin Version 1 | | ||
| +----------------------------------------------------------------------+ | ||
| | Copyright (c) 2006-2007 The Hardened-PHP Project | | ||
| | Copyright (c) 2007-2010 SektionEins GmbH | | ||
| +----------------------------------------------------------------------+ | ||
| | This source file is subject to version 3.01 of the PHP 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.php.net/license/3_01.txt | | ||
| | If you did not receive a copy of the PHP license and are unable to | | ||
| | obtain it through the world-wide-web, please send a note to | | ||
| | [email protected] so we can mail you a copy immediately. | | ||
| +----------------------------------------------------------------------+ | ||
| | Author: Juergen Pabel <[email protected]> | | ||
| +----------------------------------------------------------------------+ | ||
| */ | ||
|
|
||
| #ifdef SUHOSIN_EXPERIMENTAL | ||
| #include <stdio.h> | ||
| #include "php.h" | ||
| #include "php_suhosin.h" | ||
| #include "sha256.h" | ||
|
|
||
| static char cryptkey[32]; | ||
|
|
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| /* {{{ proto string secureconfig_encrypt(string plaintext) | ||
| Encrypt a configuration value using the configured cryptographic key */ | ||
| static PHP_FUNCTION(suhosin_secureconfig_encrypt) | ||
| { | ||
| char *plaintext, *ciphertext; | ||
| int plaintext_len, ciphertext_len; | ||
| int i; | ||
| if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &plaintext, &plaintext_len) == FAILURE) { | ||
| return; | ||
| } | ||
| ciphertext = suhosin_encrypt_string(plaintext, plaintext_len, "", 0, cryptkey TSRMLS_CC); | ||
| if(ciphertext == NULL) { | ||
| return; | ||
| } | ||
| ciphertext_len = strlen(ciphertext); | ||
| /* undo suhosin_encrypt_string()'s base64 alphabet transformation */ | ||
| for (i=0; i<ciphertext_len; i++) { | ||
| switch (ciphertext[i]) { | ||
| case '-': ciphertext[i]='/'; break; | ||
| case '.': ciphertext[i]='='; break; | ||
| case '_': ciphertext[i]='+'; break; | ||
| } | ||
| } | ||
| RETURN_STRINGL((char *)ciphertext, ciphertext_len, 1); | ||
| } | ||
|
|
||
| /* }}} */ | ||
|
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||
|
|
||
| /* {{{ proto string secureconfig_decrypt(string ciphertext) | ||
| Decrypt a configuration value using the configured cryptographic key */ | ||
| static PHP_FUNCTION(suhosin_secureconfig_decrypt) | ||
| { | ||
| char *plaintext, *ciphertext; | ||
| int plaintext_len, ciphertext_len; | ||
| int i; | ||
|
|
||
| if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &ciphertext, &ciphertext_len) == FAILURE) { | ||
| return; | ||
| } | ||
|
|
||
| /* redo suhosin_encrypt_string()'s base64 alphabet transformation */ | ||
| for (i=0; i<ciphertext_len; i++) { | ||
| switch (ciphertext[i]) { | ||
| case '/': ciphertext[i]='-'; break; | ||
| case '=': ciphertext[i]='.'; break; | ||
| case '+': ciphertext[i]='_'; break; | ||
| } | ||
| } | ||
| plaintext = suhosin_decrypt_string(ciphertext, ciphertext_len, "", 0, cryptkey, &plaintext_len, 0 TSRMLS_CC); | ||
| if(plaintext == NULL || plaintext_len <= 0) { | ||
| return; | ||
| } | ||
| RETURN_STRINGL((char *)plaintext, plaintext_len, 1); | ||
| } | ||
|
|
||
| /* }}} */ | ||
|
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||
|
|
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| /* {{{ suhosin_secureconfig_functions[] | ||
| */ | ||
| static function_entry suhosin_secureconfig_functions[] = { | ||
| PHP_NAMED_FE(secureconfig_encrypt, PHP_FN(suhosin_secureconfig_encrypt), NULL) | ||
| PHP_NAMED_FE(secureconfig_decrypt, PHP_FN(suhosin_secureconfig_decrypt), NULL) | ||
| {NULL, NULL, NULL} | ||
| }; | ||
| /* }}} */ | ||
|
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||
|
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| void suhosin_hook_secureconfig(TSRMLS_D) | ||
| { | ||
| char* key; | ||
| suhosin_SHA256_CTX ctx; | ||
|
|
||
| // TSRMLS_FETCH(); | ||
|
|
||
| /* check if we already have secureconfig support */ | ||
| if (zend_hash_exists(CG(function_table), "secureconfig_encrypt", sizeof("secureconfig_encrypt"))) { | ||
| return; | ||
| } | ||
|
|
||
| key = SUHOSIN_G(secureconfig_cryptkey); | ||
| if (key != NULL) { | ||
| suhosin_SHA256Init(&ctx); | ||
| suhosin_SHA256Update(&ctx, (unsigned char*)key, strlen(key)); | ||
| suhosin_SHA256Final((unsigned char *)cryptkey, &ctx); | ||
| } else { | ||
| memset(cryptkey, 0x55 /*fallback key with alternating bits*/, 32); | ||
| } | ||
|
|
||
| /* add the secureconfig functions */ | ||
| #ifndef ZEND_ENGINE_2 | ||
| zend_register_functions(suhosin_secureconfig_functions, NULL, MODULE_PERSISTENT TSRMLS_CC); | ||
| #else | ||
| zend_register_functions(NULL, suhosin_secureconfig_functions, NULL, MODULE_PERSISTENT TSRMLS_CC); | ||
| #endif | ||
| } | ||
|
|
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| #endif /* SUHOSIN_EXPERIMENTAL */ | ||
|
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| /* | ||
| * Local variables: | ||
| * tab-width: 4 | ||
| * c-basic-offset: 4 | ||
| * End: | ||
| * vim600: sw=4 ts=4 fdm=marker | ||
| * vim<600: sw=4 ts=4 | ||
| */ |
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