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The $Id$ keywords were used in Subversion where they can be substituted with filename, last revision number change, last changed date, and last user who changed it. In Git this functionality is different and can be done with Git attribute ident. These need to be defined manually for each file in the .gitattributes file and are afterwards replaced with 40-character hexadecimal blob object name which is based only on the particular file contents. This patch simplifies handling of $Id$ keywords by removing them since they are not used anymore.
295 lines
8.4 KiB
C
295 lines
8.4 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP Version 7 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2018 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP 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@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Stig Bakken <ssb@php.net> |
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| Zeev Suraski <zeev@zend.com> |
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| Rasmus Lerdorf <rasmus@php.net> |
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| Pierre Joye <pierre@php.net> |
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+----------------------------------------------------------------------+
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*/
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#include <stdlib.h>
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#include "php.h"
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#if PHP_USE_PHP_CRYPT_R
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# include "php_crypt_r.h"
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# include "crypt_freesec.h"
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#else
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# if HAVE_CRYPT_H
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# if defined(CRYPT_R_GNU_SOURCE) && !defined(_GNU_SOURCE)
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# define _GNU_SOURCE
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# endif
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# include <crypt.h>
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# endif
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#endif
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#if TM_IN_SYS_TIME
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#include <sys/time.h>
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#else
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#include <time.h>
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#endif
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#if HAVE_STRING_H
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#include <string.h>
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#else
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#include <strings.h>
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#endif
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#ifdef PHP_WIN32
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#include <process.h>
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#endif
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#include "php_crypt.h"
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#include "php_random.h"
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/* sha512 crypt has the maximal salt length of 123 characters */
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#define PHP_MAX_SALT_LEN 123
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/* Used to check DES salts to ensure that they contain only valid characters */
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#define IS_VALID_SALT_CHARACTER(c) (((c) >= '.' && (c) <= '9') || ((c) >= 'A' && (c) <= 'Z') || ((c) >= 'a' && (c) <= 'z'))
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#define DES_INVALID_SALT_ERROR "Supplied salt is not valid for DES. Possible bug in provided salt format."
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PHP_MINIT_FUNCTION(crypt) /* {{{ */
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{
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REGISTER_LONG_CONSTANT("CRYPT_SALT_LENGTH", PHP_MAX_SALT_LEN, CONST_CS | CONST_PERSISTENT);
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REGISTER_LONG_CONSTANT("CRYPT_STD_DES", 1, CONST_CS | CONST_PERSISTENT);
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REGISTER_LONG_CONSTANT("CRYPT_EXT_DES", 1, CONST_CS | CONST_PERSISTENT);
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REGISTER_LONG_CONSTANT("CRYPT_MD5", 1, CONST_CS | CONST_PERSISTENT);
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REGISTER_LONG_CONSTANT("CRYPT_BLOWFISH", 1, CONST_CS | CONST_PERSISTENT);
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REGISTER_LONG_CONSTANT("CRYPT_SHA256", 1, CONST_CS | CONST_PERSISTENT);
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REGISTER_LONG_CONSTANT("CRYPT_SHA512", 1, CONST_CS | CONST_PERSISTENT);
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#if PHP_USE_PHP_CRYPT_R
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php_init_crypt_r();
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#endif
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return SUCCESS;
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}
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/* }}} */
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PHP_MSHUTDOWN_FUNCTION(crypt) /* {{{ */
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{
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#if PHP_USE_PHP_CRYPT_R
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php_shutdown_crypt_r();
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#endif
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return SUCCESS;
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}
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/* }}} */
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static unsigned char itoa64[] = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
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static void php_to64(char *s, int n) /* {{{ */
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{
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while (--n >= 0) {
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*s = itoa64[*s & 0x3f];
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s++;
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}
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}
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/* }}} */
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PHPAPI zend_string *php_crypt(const char *password, const int pass_len, const char *salt, int salt_len, zend_bool quiet)
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{
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char *crypt_res;
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zend_string *result;
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/* Windows (win32/crypt) has a stripped down version of libxcrypt and
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a CryptoApi md5_crypt implementation */
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#if PHP_USE_PHP_CRYPT_R
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{
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struct php_crypt_extended_data buffer;
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if (salt[0]=='$' && salt[1]=='1' && salt[2]=='$') {
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char output[MD5_HASH_MAX_LEN], *out;
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out = php_md5_crypt_r(password, salt, output);
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if (out) {
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return zend_string_init(out, strlen(out), 0);
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}
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return NULL;
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} else if (salt[0]=='$' && salt[1]=='6' && salt[2]=='$') {
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char *output;
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output = emalloc(PHP_MAX_SALT_LEN);
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crypt_res = php_sha512_crypt_r(password, salt, output, PHP_MAX_SALT_LEN);
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if (!crypt_res) {
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ZEND_SECURE_ZERO(output, PHP_MAX_SALT_LEN);
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efree(output);
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return NULL;
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} else {
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result = zend_string_init(output, strlen(output), 0);
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ZEND_SECURE_ZERO(output, PHP_MAX_SALT_LEN);
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efree(output);
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return result;
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}
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} else if (salt[0]=='$' && salt[1]=='5' && salt[2]=='$') {
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char *output;
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output = emalloc(PHP_MAX_SALT_LEN);
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crypt_res = php_sha256_crypt_r(password, salt, output, PHP_MAX_SALT_LEN);
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if (!crypt_res) {
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ZEND_SECURE_ZERO(output, PHP_MAX_SALT_LEN);
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efree(output);
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return NULL;
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} else {
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result = zend_string_init(output, strlen(output), 0);
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ZEND_SECURE_ZERO(output, PHP_MAX_SALT_LEN);
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efree(output);
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return result;
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}
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} else if (
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salt[0] == '$' &&
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salt[1] == '2' &&
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salt[3] == '$') {
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char output[PHP_MAX_SALT_LEN + 1];
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memset(output, 0, PHP_MAX_SALT_LEN + 1);
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crypt_res = php_crypt_blowfish_rn(password, salt, output, sizeof(output));
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if (!crypt_res) {
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ZEND_SECURE_ZERO(output, PHP_MAX_SALT_LEN + 1);
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return NULL;
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} else {
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result = zend_string_init(output, strlen(output), 0);
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ZEND_SECURE_ZERO(output, PHP_MAX_SALT_LEN + 1);
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return result;
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}
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} else if (salt[0] == '*' && (salt[1] == '0' || salt[1] == '1')) {
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return NULL;
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} else {
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/* DES Fallback */
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/* Only check the salt if it's not EXT_DES */
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if (salt[0] != '_') {
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/* DES style hashes */
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if (!IS_VALID_SALT_CHARACTER(salt[0]) || !IS_VALID_SALT_CHARACTER(salt[1])) {
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if (!quiet) {
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/* error consistently about invalid DES fallbacks */
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php_error_docref(NULL, E_DEPRECATED, DES_INVALID_SALT_ERROR);
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}
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}
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}
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memset(&buffer, 0, sizeof(buffer));
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_crypt_extended_init_r();
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crypt_res = _crypt_extended_r(password, salt, &buffer);
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if (!crypt_res || (salt[0] == '*' && salt[1] == '0')) {
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return NULL;
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} else {
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result = zend_string_init(crypt_res, strlen(crypt_res), 0);
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return result;
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}
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}
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}
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#else
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if (salt[0] != '$' && salt[0] != '_' && (!IS_VALID_SALT_CHARACTER(salt[0]) || !IS_VALID_SALT_CHARACTER(salt[1]))) {
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if (!quiet) {
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/* error consistently about invalid DES fallbacks */
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php_error_docref(NULL, E_DEPRECATED, DES_INVALID_SALT_ERROR);
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}
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}
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# if defined(HAVE_CRYPT_R) && (defined(_REENTRANT) || defined(_THREAD_SAFE))
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{
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# if defined(CRYPT_R_STRUCT_CRYPT_DATA)
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struct crypt_data buffer;
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memset(&buffer, 0, sizeof(buffer));
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# elif defined(CRYPT_R_CRYPTD)
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CRYPTD buffer;
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# else
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# error Data struct used by crypt_r() is unknown. Please report.
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# endif
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crypt_res = crypt_r(password, salt, &buffer);
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}
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# elif defined(HAVE_CRYPT)
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crypt_res = crypt(password, salt);
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# else
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# error No crypt() implementation
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# endif
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#endif
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if (!crypt_res || (salt[0] == '*' && salt[1] == '0')) {
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return NULL;
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} else {
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result = zend_string_init(crypt_res, strlen(crypt_res), 0);
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return result;
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}
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}
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/* }}} */
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/* {{{ proto string crypt(string str [, string salt])
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Hash a string */
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PHP_FUNCTION(crypt)
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{
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char salt[PHP_MAX_SALT_LEN + 1];
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char *str, *salt_in = NULL;
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size_t str_len, salt_in_len = 0;
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zend_string *result;
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ZEND_PARSE_PARAMETERS_START(1, 2)
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Z_PARAM_STRING(str, str_len)
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Z_PARAM_OPTIONAL
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Z_PARAM_STRING(salt_in, salt_in_len)
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ZEND_PARSE_PARAMETERS_END();
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salt[0] = salt[PHP_MAX_SALT_LEN] = '\0';
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/* This will produce suitable results if people depend on DES-encryption
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* available (passing always 2-character salt). At least for glibc6.1 */
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memset(&salt[1], '$', PHP_MAX_SALT_LEN - 1);
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if (salt_in) {
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memcpy(salt, salt_in, MIN(PHP_MAX_SALT_LEN, salt_in_len));
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} else {
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php_error_docref(NULL, E_NOTICE, "No salt parameter was specified. You must use a randomly generated salt and a strong hash function to produce a secure hash.");
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}
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/* The automatic salt generation covers standard DES, md5-crypt and Blowfish (simple) */
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if (!*salt) {
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strncpy(salt, "$1$", 3);
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php_random_bytes_throw(&salt[3], 8);
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php_to64(&salt[3], 8);
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strncpy(&salt[11], "$", PHP_MAX_SALT_LEN - 11);
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salt_in_len = strlen(salt);
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} else {
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salt_in_len = MIN(PHP_MAX_SALT_LEN, salt_in_len);
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}
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salt[salt_in_len] = '\0';
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if ((result = php_crypt(str, (int)str_len, salt, (int)salt_in_len, 0)) == NULL) {
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if (salt[0] == '*' && salt[1] == '0') {
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RETURN_STRING("*1");
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} else {
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RETURN_STRING("*0");
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}
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}
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RETURN_STR(result);
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}
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/* }}} */
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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* vim600: sw=4 ts=4 fdm=marker
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* vim<600: sw=4 ts=4
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*/
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