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php-src/ext/mcrypt/mcrypt.c
Sebastian Bergmann 4223aa4d5e MFH: Bump year.
2007-01-01 09:36:18 +00:00

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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2007 The PHP Group |
+----------------------------------------------------------------------+
| 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 |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Sascha Schumann <sascha@schumann.cx> |
| Derick Rethans <derick@derickrethans.nl> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#if HAVE_LIBMCRYPT
#include "php_mcrypt.h"
#include "fcntl.h"
#define NON_FREE
#define MCRYPT2
#include "mcrypt.h"
#include "php_ini.h"
#include "php_globals.h"
#include "ext/standard/info.h"
static int le_mcrypt;
typedef struct _php_mcrypt {
MCRYPT td;
zend_bool init;
} php_mcrypt;
zend_function_entry mcrypt_functions[] = {
PHP_FE(mcrypt_ecb, NULL)
PHP_FE(mcrypt_cbc, NULL)
PHP_FE(mcrypt_cfb, NULL)
PHP_FE(mcrypt_ofb, NULL)
PHP_FE(mcrypt_get_key_size, NULL)
PHP_FE(mcrypt_get_block_size, NULL)
PHP_FE(mcrypt_get_cipher_name, NULL)
PHP_FE(mcrypt_create_iv, NULL)
PHP_FE(mcrypt_list_algorithms, NULL)
PHP_FE(mcrypt_list_modes, NULL)
PHP_FE(mcrypt_get_iv_size, NULL)
PHP_FE(mcrypt_encrypt, NULL)
PHP_FE(mcrypt_decrypt, NULL)
PHP_FE(mcrypt_module_open, NULL)
PHP_FE(mcrypt_generic_init, NULL)
PHP_FE(mcrypt_generic, NULL)
PHP_FE(mdecrypt_generic, NULL)
PHP_DEP_FALIAS(mcrypt_generic_end, mcrypt_generic_deinit, NULL)
PHP_FE(mcrypt_generic_deinit, NULL)
PHP_FE(mcrypt_enc_self_test, NULL)
PHP_FE(mcrypt_enc_is_block_algorithm_mode, NULL)
PHP_FE(mcrypt_enc_is_block_algorithm, NULL)
PHP_FE(mcrypt_enc_is_block_mode, NULL)
PHP_FE(mcrypt_enc_get_block_size, NULL)
PHP_FE(mcrypt_enc_get_key_size, NULL)
PHP_FE(mcrypt_enc_get_supported_key_sizes, NULL)
PHP_FE(mcrypt_enc_get_iv_size, NULL)
PHP_FE(mcrypt_enc_get_algorithms_name, NULL)
PHP_FE(mcrypt_enc_get_modes_name, NULL)
PHP_FE(mcrypt_module_self_test, NULL)
PHP_FE(mcrypt_module_is_block_algorithm_mode, NULL)
PHP_FE(mcrypt_module_is_block_algorithm, NULL)
PHP_FE(mcrypt_module_is_block_mode, NULL)
PHP_FE(mcrypt_module_get_algo_block_size, NULL)
PHP_FE(mcrypt_module_get_algo_key_size, NULL)
PHP_FE(mcrypt_module_get_supported_key_sizes, NULL)
PHP_FE(mcrypt_module_close, NULL)
{NULL, NULL, NULL}
};
static PHP_MINFO_FUNCTION(mcrypt);
static PHP_MINIT_FUNCTION(mcrypt);
static PHP_MSHUTDOWN_FUNCTION(mcrypt);
ZEND_DECLARE_MODULE_GLOBALS(mcrypt)
zend_module_entry mcrypt_module_entry = {
STANDARD_MODULE_HEADER,
"mcrypt",
mcrypt_functions,
PHP_MINIT(mcrypt), PHP_MSHUTDOWN(mcrypt),
NULL, NULL,
PHP_MINFO(mcrypt),
NO_VERSION_YET,
PHP_MODULE_GLOBALS(mcrypt),
NULL,
NULL,
NULL,
STANDARD_MODULE_PROPERTIES_EX
};
#ifdef COMPILE_DL_MCRYPT
ZEND_GET_MODULE(mcrypt)
#endif
#define MCRYPT_ARGS2 \
zval **cipher, **data, **key, **mode; \
int td; \
char *ndata; \
size_t bsize; \
size_t nr; \
size_t nsize
#define MCRYPT_ARGS \
MCRYPT_ARGS2; \
zval **iv
#define MCRYPT_CONVERT \
convert_to_string_ex(cipher); \
convert_to_string_ex(mode); \
convert_to_string_ex(data); \
convert_to_string_ex(key)
#define MCRYPT_CONVERT_WO_MODE \
convert_to_string_ex(cipher); \
convert_to_string_ex(data); \
convert_to_string_ex(key)
#define MCRYPT_SIZE \
bsize = mcrypt_get_block_size(Z_LVAL_PP(cipher)); \
nr = (Z_STRLEN_PP(data) + bsize - 1) / bsize; \
nsize = nr * bsize
#define MCRYPT_CHECK_TD_CPY \
if (td < 0) { \
php_error_docref(NULL TSRMLS_CC, E_WARNING, MCRYPT_FAILED); \
RETURN_FALSE; \
} \
ndata = ecalloc(nr, bsize); \
memcpy(ndata, Z_STRVAL_PP(data), Z_STRLEN_PP(data))
#define MCRYPT_CHECK_IV \
convert_to_string_ex(iv); \
if (Z_STRLEN_PP(iv) != bsize) { \
php_error_docref(NULL TSRMLS_CC, E_WARNING, MCRYPT_IV_WRONG_SIZE); \
RETURN_FALSE; \
}
#define MCRYPT_ACTION(x) \
if (Z_LVAL_PP(mode) == 0) { \
mcrypt_##x(td, ndata, nsize); \
} else { \
mdecrypt_##x(td, ndata, nsize); \
} \
end_mcrypt_##x(td)
#define MCRYPT_IV_WRONG_SIZE "The IV parameter must be as long as the blocksize"
#define MCRYPT_ENCRYPT 0
#define MCRYPT_DECRYPT 1
#define MCRYPT_GET_INI \
cipher_dir_string = MCG(algorithms_dir); \
module_dir_string = MCG(modes_dir);
#define MCRYPT_CHECK_PARAM_COUNT(a,b) \
if (argc < (a) || argc > (b)) { \
WRONG_PARAM_COUNT; \
}
/*
* #warning is not ANSI C
* #warning Invalidate resource if the param count is wrong, or other problems
* #warning occurred during functions.
*/
#define MCRYPT_GET_CRYPT_ARGS \
switch (argc) { \
case 5: \
if (zend_get_parameters_ex(5, &cipher, &key, &data, &mode, &iv) == FAILURE) { \
WRONG_PARAM_COUNT; \
} \
convert_to_string_ex(iv); \
break; \
case 4: \
if (zend_get_parameters_ex(4, &cipher, &key, &data, &mode) == FAILURE) { \
WRONG_PARAM_COUNT; \
} \
iv = NULL; \
break; \
default: \
WRONG_PARAM_COUNT; \
}
#define MCRYPT_GET_TD_ARG \
zval **mcryptind; \
php_mcrypt *pm; \
if (ZEND_NUM_ARGS() != 1 || zend_get_parameters_ex(1, &mcryptind) == FAILURE) { \
WRONG_PARAM_COUNT \
} \
ZEND_FETCH_RESOURCE (pm, php_mcrypt *, mcryptind, -1, "MCrypt", le_mcrypt);
#define MCRYPT_GET_MODE_DIR_ARGS(DIRECTORY) \
char *dir = NULL; \
int dir_len; \
char *module; \
int module_len; \
if (zend_parse_parameters (ZEND_NUM_ARGS() TSRMLS_CC, \
"s|s", &module, &module_len, &dir, &dir_len) == FAILURE) { \
return; \
}
#define MCRYPT_OPEN_MODULE_FAILED "Module initialization failed"
#define MCRYPT_ENTRY2_2_4(a,b) REGISTER_STRING_CONSTANT("MCRYPT_" #a, b, CONST_PERSISTENT)
#define MCRYPT_ENTRY2_4(a) MCRYPT_ENTRY_NAMED(a, a)
#define PHP_MCRYPT_INIT_CHECK \
if (!pm->init) { \
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Operation disallowed prior to mcrypt_generic_init()."); \
RETURN_FALSE; \
} \
PHP_INI_BEGIN()
STD_PHP_INI_ENTRY("mcrypt.algorithms_dir", NULL, PHP_INI_ALL, OnUpdateString, algorithms_dir, zend_mcrypt_globals, mcrypt_globals)
STD_PHP_INI_ENTRY("mcrypt.modes_dir", NULL, PHP_INI_ALL, OnUpdateString, modes_dir, zend_mcrypt_globals, mcrypt_globals)
PHP_INI_END()
static void php_mcrypt_module_dtor(zend_rsrc_list_entry *rsrc TSRMLS_DC)
{
php_mcrypt *pm = (php_mcrypt *) rsrc->ptr;
if (pm) {
mcrypt_generic_deinit(pm->td);
mcrypt_module_close(pm->td);
efree(pm);
pm = NULL;
}
}
static PHP_MINIT_FUNCTION(mcrypt)
{
le_mcrypt = zend_register_list_destructors_ex(php_mcrypt_module_dtor, NULL, "mcrypt", module_number);
/* modes for mcrypt_??? routines */
REGISTER_LONG_CONSTANT("MCRYPT_ENCRYPT", 0, CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("MCRYPT_DECRYPT", 1, CONST_PERSISTENT);
/* sources for mcrypt_create_iv */
REGISTER_LONG_CONSTANT("MCRYPT_DEV_RANDOM", 0, CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("MCRYPT_DEV_URANDOM", 1, CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("MCRYPT_RAND", 2, CONST_PERSISTENT);
/* ciphers */
MCRYPT_ENTRY2_2_4(3DES, "tripledes");
MCRYPT_ENTRY2_2_4(ARCFOUR_IV, "arcfour-iv");
MCRYPT_ENTRY2_2_4(ARCFOUR, "arcfour");
MCRYPT_ENTRY2_2_4(BLOWFISH, "blowfish");
MCRYPT_ENTRY2_2_4(BLOWFISH_COMPAT, "blowfish-compat");
MCRYPT_ENTRY2_2_4(CAST_128, "cast-128");
MCRYPT_ENTRY2_2_4(CAST_256, "cast-256");
MCRYPT_ENTRY2_2_4(CRYPT, "crypt");
MCRYPT_ENTRY2_2_4(DES, "des");
MCRYPT_ENTRY2_2_4(ENIGNA, "crypt");
MCRYPT_ENTRY2_2_4(GOST, "gost");
MCRYPT_ENTRY2_2_4(LOKI97, "loki97");
MCRYPT_ENTRY2_2_4(PANAMA, "panama");
MCRYPT_ENTRY2_2_4(RC2, "rc2");
MCRYPT_ENTRY2_2_4(RIJNDAEL_128, "rijndael-128");
MCRYPT_ENTRY2_2_4(RIJNDAEL_192, "rijndael-192");
MCRYPT_ENTRY2_2_4(RIJNDAEL_256, "rijndael-256");
MCRYPT_ENTRY2_2_4(SAFER64, "safer-sk64");
MCRYPT_ENTRY2_2_4(SAFER128, "safer-sk128");
MCRYPT_ENTRY2_2_4(SAFERPLUS, "saferplus");
MCRYPT_ENTRY2_2_4(SERPENT, "serpent");
MCRYPT_ENTRY2_2_4(THREEWAY, "threeway");
MCRYPT_ENTRY2_2_4(TRIPLEDES, "tripledes");
MCRYPT_ENTRY2_2_4(TWOFISH, "twofish");
MCRYPT_ENTRY2_2_4(WAKE, "wake");
MCRYPT_ENTRY2_2_4(XTEA, "xtea");
MCRYPT_ENTRY2_2_4(IDEA, "idea");
MCRYPT_ENTRY2_2_4(MARS, "mars");
MCRYPT_ENTRY2_2_4(RC6, "rc6");
MCRYPT_ENTRY2_2_4(SKIPJACK, "skipjack");
/* modes */
MCRYPT_ENTRY2_2_4(MODE_CBC, "cbc");
MCRYPT_ENTRY2_2_4(MODE_CFB, "cfb");
MCRYPT_ENTRY2_2_4(MODE_ECB, "ecb");
MCRYPT_ENTRY2_2_4(MODE_NOFB, "nofb");
MCRYPT_ENTRY2_2_4(MODE_OFB, "ofb");
MCRYPT_ENTRY2_2_4(MODE_STREAM, "stream");
REGISTER_INI_ENTRIES();
return SUCCESS;
}
static PHP_MSHUTDOWN_FUNCTION(mcrypt)
{
UNREGISTER_INI_ENTRIES();
return SUCCESS;
}
#include "ext/standard/php_smart_str.h"
PHP_MINFO_FUNCTION(mcrypt)
{
char **modules;
char mcrypt_api_no[16];
int i, count;
smart_str tmp1 = {0};
smart_str tmp2 = {0};
modules = mcrypt_list_algorithms(MCG(algorithms_dir), &count);
if (count == 0) {
smart_str_appends(&tmp1, "none");
}
for (i = 0; i < count; i++) {
smart_str_appends(&tmp1, modules[i]);
smart_str_appendc(&tmp1, ' ');
}
smart_str_0(&tmp1);
mcrypt_free_p(modules, count);
modules = mcrypt_list_modes(MCG(modes_dir), &count);
if (count == 0) {
smart_str_appends(&tmp2, "none");
}
for (i = 0; i < count; i++) {
smart_str_appends(&tmp2, modules[i]);
smart_str_appendc(&tmp2, ' ');
}
smart_str_0 (&tmp2);
mcrypt_free_p (modules, count);
snprintf (mcrypt_api_no, 16, "%d", MCRYPT_API_VERSION);
php_info_print_table_start();
php_info_print_table_header(2, "mcrypt support", "enabled");
php_info_print_table_row(2, "Version", LIBMCRYPT_VERSION);
php_info_print_table_row(2, "Api No", mcrypt_api_no);
php_info_print_table_row(2, "Supported ciphers", tmp1.c);
php_info_print_table_row(2, "Supported modes", tmp2.c);
smart_str_free(&tmp1);
smart_str_free(&tmp2);
php_info_print_table_end();
DISPLAY_INI_ENTRIES();
}
typedef enum {
RANDOM = 0,
URANDOM,
RAND
} iv_source;
/* {{{ proto resource mcrypt_module_open(string cipher, string cipher_directory, string mode, string mode_directory)
Opens the module of the algorithm and the mode to be used */
PHP_FUNCTION(mcrypt_module_open)
{
char *cipher, *cipher_dir;
char *mode, *mode_dir;
int cipher_len, cipher_dir_len;
int mode_len, mode_dir_len;
MCRYPT td;
php_mcrypt *pm;
if (zend_parse_parameters (ZEND_NUM_ARGS() TSRMLS_CC, "ssss",
&cipher, &cipher_len, &cipher_dir, &cipher_dir_len,
&mode, &mode_len, &mode_dir, &mode_dir_len)) {
return;
}
td = mcrypt_module_open (
cipher,
cipher_dir_len > 0 ? cipher_dir : MCG(algorithms_dir),
mode,
mode_dir_len > 0 ? mode_dir : MCG(modes_dir)
);
if (td == MCRYPT_FAILED) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not open encryption module");
RETURN_FALSE;
} else {
pm = emalloc(sizeof(php_mcrypt));
pm->td = td;
pm->init = 0;
ZEND_REGISTER_RESOURCE(return_value, pm, le_mcrypt);
}
}
/* }}} */
/* {{{ proto int mcrypt_generic_init(resource td, string key, string iv)
This function initializes all buffers for the specific module */
PHP_FUNCTION(mcrypt_generic_init)
{
zval **key, **iv;
zval **mcryptind;
unsigned char *key_s, *iv_s;
int max_key_size, key_size, iv_size;
php_mcrypt *pm;
int argc;
int result = 0;
argc = ZEND_NUM_ARGS();
MCRYPT_CHECK_PARAM_COUNT (3,3)
zend_get_parameters_ex(3, &mcryptind, &key, &iv);
ZEND_FETCH_RESOURCE(pm, php_mcrypt *, mcryptind, -1, "MCrypt", le_mcrypt);
convert_to_string_ex(key);
convert_to_string_ex(iv);
max_key_size = mcrypt_enc_get_key_size(pm->td);
iv_size = mcrypt_enc_get_iv_size(pm->td);
if (Z_STRLEN_PP(key) == 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Key size is 0");
}
key_s = emalloc(Z_STRLEN_PP(key));
memset(key_s, 0, Z_STRLEN_PP(key));
iv_s = emalloc(iv_size + 1);
memset(iv_s, 0, iv_size + 1);
if (Z_STRLEN_PP(key) > max_key_size) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Key size too large; supplied length: %d, max: %d", Z_STRLEN_PP(key), max_key_size);
key_size = max_key_size;
} else {
key_size = Z_STRLEN_PP(key);
}
memcpy(key_s, Z_STRVAL_PP(key), Z_STRLEN_PP(key));
if (Z_STRLEN_PP(iv) != iv_size) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Iv size incorrect; supplied length: %d, needed: %d", Z_STRLEN_PP(iv), iv_size);
}
memcpy(iv_s, Z_STRVAL_PP(iv), iv_size);
mcrypt_generic_deinit(pm->td);
result = mcrypt_generic_init(pm->td, key_s, key_size, iv_s);
/* If this function fails, close the mcrypt module to prevent crashes
* when further functions want to access this resource */
if (result < 0) {
zend_list_delete(Z_LVAL_PP(mcryptind));
switch (result) {
case -3:
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Key length incorrect");
break;
case -4:
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Memory allocation error");
break;
case -1:
default:
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unknown error");
break;
}
}
pm->init = 1;
RETVAL_LONG(result);
efree(iv_s);
efree(key_s);
}
/* }}} */
/* {{{ proto string mcrypt_generic(resource td, string data)
This function encrypts the plaintext */
PHP_FUNCTION(mcrypt_generic)
{
zval **data, **mcryptind;
php_mcrypt *pm;
int argc;
unsigned char* data_s;
int block_size, data_size;
argc = ZEND_NUM_ARGS();
MCRYPT_CHECK_PARAM_COUNT (2,2)
zend_get_parameters_ex(2, &mcryptind, &data);
ZEND_FETCH_RESOURCE(pm, php_mcrypt *, mcryptind, -1, "MCrypt", le_mcrypt);
PHP_MCRYPT_INIT_CHECK
convert_to_string_ex(data);
if (Z_STRLEN_PP(data) == 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "An empty string was passed");
RETURN_FALSE
}
/* Check blocksize */
if (mcrypt_enc_is_block_mode(pm->td) == 1) { /* It's a block algorithm */
block_size = mcrypt_enc_get_block_size(pm->td);
data_size = (((Z_STRLEN_PP(data) - 1) / block_size) + 1) * block_size;
data_s = emalloc(data_size + 1);
memset(data_s, 0, data_size);
memcpy(data_s, Z_STRVAL_PP(data), Z_STRLEN_PP(data));
} else { /* It's not a block algorithm */
data_size = Z_STRLEN_PP(data);
data_s = emalloc(data_size + 1);
memset(data_s, 0, data_size);
memcpy(data_s, Z_STRVAL_PP(data), Z_STRLEN_PP(data));
}
mcrypt_generic(pm->td, data_s, data_size);
data_s[data_size] = '\0';
RETVAL_STRINGL(data_s, data_size, 1);
efree(data_s);
}
/* }}} */
/* {{{ proto string mdecrypt_generic(resource td, string data)
This function decrypts the plaintext */
PHP_FUNCTION(mdecrypt_generic)
{
zval **data, **mcryptind;
php_mcrypt *pm;
int argc;
char* data_s;
int block_size, data_size;
argc = ZEND_NUM_ARGS();
MCRYPT_CHECK_PARAM_COUNT (2,2)
zend_get_parameters_ex(2, &mcryptind, &data);
ZEND_FETCH_RESOURCE(pm, php_mcrypt * , mcryptind, -1, "MCrypt", le_mcrypt);
PHP_MCRYPT_INIT_CHECK
convert_to_string_ex(data);
if (Z_STRLEN_PP(data) == 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "An empty string was passed");
RETURN_FALSE
}
/* Check blocksize */
if (mcrypt_enc_is_block_mode(pm->td) == 1) { /* It's a block algorithm */
block_size = mcrypt_enc_get_block_size(pm->td);
data_size = (((Z_STRLEN_PP(data) - 1) / block_size) + 1) * block_size;
data_s = emalloc(data_size + 1);
memset(data_s, 0, data_size);
memcpy(data_s, Z_STRVAL_PP(data), Z_STRLEN_PP(data));
} else { /* It's not a block algorithm */
data_size = Z_STRLEN_PP(data);
data_s = emalloc(data_size + 1);
memset(data_s, 0, data_size);
memcpy(data_s, Z_STRVAL_PP(data), Z_STRLEN_PP(data));
}
mdecrypt_generic(pm->td, data_s, data_size);
RETVAL_STRINGL(data_s, data_size, 1);
efree(data_s);
}
/* }}} */
/* {{{ proto array mcrypt_enc_get_supported_key_sizes(resource td)
This function decrypts the crypttext */
PHP_FUNCTION(mcrypt_enc_get_supported_key_sizes)
{
int i, count = 0;
int *key_sizes;
MCRYPT_GET_TD_ARG
array_init(return_value);
key_sizes = mcrypt_enc_get_supported_key_sizes(pm->td, &count);
for (i = 0; i < count; i++) {
add_index_long(return_value, i, key_sizes[i]);
}
mcrypt_free(key_sizes);
}
/* }}} */
/* {{{ proto int mcrypt_enc_self_test(resource td)
This function runs the self test on the algorithm specified by the descriptor td */
PHP_FUNCTION(mcrypt_enc_self_test)
{
MCRYPT_GET_TD_ARG
RETURN_LONG(mcrypt_enc_self_test(pm->td));
}
/* }}} */
/* {{{ proto bool mcrypt_module_close(resource td)
Free the descriptor td */
PHP_FUNCTION(mcrypt_module_close)
{
MCRYPT_GET_TD_ARG
zend_list_delete(Z_LVAL_PP(mcryptind));
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool mcrypt_generic_deinit(resource td)
This function terminates encrypt specified by the descriptor td */
PHP_FUNCTION(mcrypt_generic_deinit)
{
MCRYPT_GET_TD_ARG
if (mcrypt_generic_deinit(pm->td) < 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not terminate encryption specifier");
RETURN_FALSE
}
RETURN_TRUE
}
/* }}} */
/* {{{ proto bool mcrypt_enc_is_block_algorithm_mode(resource td)
Returns TRUE if the mode is for use with block algorithms */
PHP_FUNCTION(mcrypt_enc_is_block_algorithm_mode)
{
MCRYPT_GET_TD_ARG
if (mcrypt_enc_is_block_algorithm_mode(pm->td) == 1) {
RETURN_TRUE
} else {
RETURN_FALSE
}
}
/* }}} */
/* {{{ proto bool mcrypt_enc_is_block_algorithm(resource td)
Returns TRUE if the alrogithm is a block algorithms */
PHP_FUNCTION(mcrypt_enc_is_block_algorithm)
{
MCRYPT_GET_TD_ARG
if (mcrypt_enc_is_block_algorithm(pm->td) == 1) {
RETURN_TRUE
} else {
RETURN_FALSE
}
}
/* }}} */
/* {{{ proto bool mcrypt_enc_is_block_mode(resource td)
Returns TRUE if the mode outputs blocks */
PHP_FUNCTION(mcrypt_enc_is_block_mode)
{
MCRYPT_GET_TD_ARG
if (mcrypt_enc_is_block_mode(pm->td) == 1) {
RETURN_TRUE
} else {
RETURN_FALSE
}
}
/* }}} */
/* {{{ proto int mcrypt_enc_get_block_size(resource td)
Returns the block size of the cipher specified by the descriptor td */
PHP_FUNCTION(mcrypt_enc_get_block_size)
{
MCRYPT_GET_TD_ARG
RETURN_LONG(mcrypt_enc_get_block_size(pm->td));
}
/* }}} */
/* {{{ proto int mcrypt_enc_get_key_size(resource td)
Returns the maximum supported key size in bytes of the algorithm specified by the descriptor td */
PHP_FUNCTION(mcrypt_enc_get_key_size)
{
MCRYPT_GET_TD_ARG
RETURN_LONG(mcrypt_enc_get_key_size(pm->td));
}
/* }}} */
/* {{{ proto int mcrypt_enc_get_iv_size(resource td)
Returns the size of the IV in bytes of the algorithm specified by the descriptor td */
PHP_FUNCTION(mcrypt_enc_get_iv_size)
{
MCRYPT_GET_TD_ARG
RETURN_LONG(mcrypt_enc_get_iv_size(pm->td));
}
/* }}} */
/* {{{ proto string mcrypt_enc_get_algorithms_name(resource td)
Returns the name of the algorithm specified by the descriptor td */
PHP_FUNCTION(mcrypt_enc_get_algorithms_name)
{
char *name;
MCRYPT_GET_TD_ARG
name = mcrypt_enc_get_algorithms_name(pm->td);
RETVAL_STRING(name, 1);
mcrypt_free(name);
}
/* }}} */
/* {{{ proto string mcrypt_enc_get_modes_name(resource td)
Returns the name of the mode specified by the descriptor td */
PHP_FUNCTION(mcrypt_enc_get_modes_name)
{
char *name;
MCRYPT_GET_TD_ARG
name = mcrypt_enc_get_modes_name(pm->td);
RETVAL_STRING(name, 1);
mcrypt_free(name);
}
/* }}} */
/* {{{ proto bool mcrypt_module_self_test(string algorithm [, string lib_dir])
Does a self test of the module "module" */
PHP_FUNCTION(mcrypt_module_self_test)
{
MCRYPT_GET_MODE_DIR_ARGS(algorithms_dir);
if (mcrypt_module_self_test(module, dir) == 0) {
RETURN_TRUE;
} else {
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto bool mcrypt_module_is_block_algorithm_mode(string mode [, string lib_dir])
Returns TRUE if the mode is for use with block algorithms */
PHP_FUNCTION(mcrypt_module_is_block_algorithm_mode)
{
MCRYPT_GET_MODE_DIR_ARGS(modes_dir)
if (mcrypt_module_is_block_algorithm_mode(module, dir) == 1) {
RETURN_TRUE;
} else {
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto bool mcrypt_module_is_block_algorithm(string algorithm [, string lib_dir])
Returns TRUE if the algorithm is a block algorithm */
PHP_FUNCTION(mcrypt_module_is_block_algorithm)
{
MCRYPT_GET_MODE_DIR_ARGS(algorithms_dir)
if (mcrypt_module_is_block_algorithm(module, dir) == 1) {
RETURN_TRUE;
} else {
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto bool mcrypt_module_is_block_mode(string mode [, string lib_dir])
Returns TRUE if the mode outputs blocks of bytes */
PHP_FUNCTION(mcrypt_module_is_block_mode)
{
MCRYPT_GET_MODE_DIR_ARGS(modes_dir)
if (mcrypt_module_is_block_mode(module, dir) == 1) {
RETURN_TRUE;
} else {
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto int mcrypt_module_get_algo_block_size(string algorithm [, string lib_dir])
Returns the block size of the algorithm */
PHP_FUNCTION(mcrypt_module_get_algo_block_size)
{
MCRYPT_GET_MODE_DIR_ARGS(algorithms_dir)
RETURN_LONG(mcrypt_module_get_algo_block_size(module, dir));
}
/* }}} */
/* {{{ proto int mcrypt_module_get_algo_key_size(string algorithm [, string lib_dir])
Returns the maximum supported key size of the algorithm */
PHP_FUNCTION(mcrypt_module_get_algo_key_size)
{
MCRYPT_GET_MODE_DIR_ARGS(algorithms_dir);
RETURN_LONG(mcrypt_module_get_algo_key_size(module, dir));
}
/* }}} */
/* {{{ proto array mcrypt_module_get_supported_key_sizes(string algorithm [, string lib_dir])
This function decrypts the crypttext */
PHP_FUNCTION(mcrypt_module_get_supported_key_sizes)
{
int i, count = 0;
int *key_sizes;
MCRYPT_GET_MODE_DIR_ARGS(algorithms_dir)
array_init(return_value);
key_sizes = mcrypt_module_get_algo_supported_key_sizes(module, dir, &count);
for (i = 0; i < count; i++) {
add_index_long(return_value, i, key_sizes[i]);
}
mcrypt_free(key_sizes);
}
/* }}} */
/* {{{ proto array mcrypt_list_algorithms([string lib_dir])
List all algorithms in "module_dir" */
PHP_FUNCTION(mcrypt_list_algorithms)
{
char **modules;
char *lib_dir = MCG(algorithms_dir);
int lib_dir_len;
int i, count;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s",
&lib_dir, &lib_dir_len) == FAILURE) {
return;
}
array_init(return_value);
modules = mcrypt_list_algorithms(lib_dir, &count);
if (count == 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "No algorithms found in module dir");
}
for (i = 0; i < count; i++) {
add_index_string(return_value, i, modules[i], 1);
}
mcrypt_free_p(modules, count);
}
/* }}} */
/* {{{ proto array mcrypt_list_modes([string lib_dir])
List all modes "module_dir" */
PHP_FUNCTION(mcrypt_list_modes)
{
char **modules;
char *lib_dir = MCG(modes_dir);
int lib_dir_len;
int i, count;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s",
&lib_dir, &lib_dir_len) == FAILURE) {
return;
}
array_init(return_value);
modules = mcrypt_list_modes(lib_dir, &count);
if (count == 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "No modes found in module dir");
}
for (i = 0; i < count; i++) {
add_index_string(return_value, i, modules[i], 1);
}
mcrypt_free_p(modules, count);
}
/* }}} */
/* {{{ proto int mcrypt_get_key_size(string cipher, string module)
Get the key size of cipher */
PHP_FUNCTION(mcrypt_get_key_size)
{
char *cipher;
char *module;
int cipher_len, module_len;
char *cipher_dir_string;
char *module_dir_string;
MCRYPT td;
MCRYPT_GET_INI
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss",
&cipher, &cipher_len, &module, &module_len) == FAILURE) {
return;
}
td = mcrypt_module_open(cipher, cipher_dir_string, module, module_dir_string);
if (td != MCRYPT_FAILED) {
RETVAL_LONG(mcrypt_enc_get_key_size(td));
mcrypt_module_close(td);
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, MCRYPT_OPEN_MODULE_FAILED);
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto int mcrypt_get_block_size(string cipher, string module)
Get the key size of cipher */
PHP_FUNCTION(mcrypt_get_block_size)
{
char *cipher;
char *module;
int cipher_len, module_len;
char *cipher_dir_string;
char *module_dir_string;
MCRYPT td;
MCRYPT_GET_INI
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss",
&cipher, &cipher_len, &module, &module_len) == FAILURE) {
return;
}
td = mcrypt_module_open(cipher, cipher_dir_string, module, module_dir_string);
if (td != MCRYPT_FAILED) {
RETVAL_LONG(mcrypt_enc_get_block_size(td));
mcrypt_module_close(td);
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, MCRYPT_OPEN_MODULE_FAILED);
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto int mcrypt_get_iv_size(string cipher, string module)
Get the IV size of cipher (Usually the same as the blocksize) */
PHP_FUNCTION(mcrypt_get_iv_size)
{
char *cipher;
char *module;
int cipher_len, module_len;
char *cipher_dir_string;
char *module_dir_string;
MCRYPT td;
MCRYPT_GET_INI
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss",
&cipher, &cipher_len, &module, &module_len) == FAILURE) {
return;
}
td = mcrypt_module_open(cipher, cipher_dir_string, module, module_dir_string);
if (td != MCRYPT_FAILED) {
RETVAL_LONG(mcrypt_enc_get_iv_size(td));
mcrypt_module_close(td);
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, MCRYPT_OPEN_MODULE_FAILED);
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto string mcrypt_get_cipher_name(string cipher)
Get the key size of cipher */
PHP_FUNCTION(mcrypt_get_cipher_name)
{
char *cipher_dir_string;
char *module_dir_string;
char *cipher_name;
char *cipher;
int cipher_len;
MCRYPT td;
MCRYPT_GET_INI
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s",
&cipher, &cipher_len) == FAILURE) {
return;
}
/* The code below is actually not very nice, but I didn't see a better
* method */
td = mcrypt_module_open(cipher, cipher_dir_string, "ecb", module_dir_string);
if (td != MCRYPT_FAILED) {
cipher_name = mcrypt_enc_get_algorithms_name(td);
mcrypt_module_close(td);
RETVAL_STRING(cipher_name,1);
mcrypt_free(cipher_name);
} else {
td = mcrypt_module_open(cipher, cipher_dir_string, "stream", module_dir_string);
if (td != MCRYPT_FAILED) {
cipher_name = mcrypt_enc_get_algorithms_name(td);
mcrypt_module_close(td);
RETVAL_STRING(cipher_name,1);
mcrypt_free(cipher_name);
} else {
php_error_docref(NULL TSRMLS_CC, E_WARNING, MCRYPT_OPEN_MODULE_FAILED);
RETURN_FALSE;
}
}
}
/* }}} */
static void php_mcrypt_do_crypt (char* cipher, zval **key, zval **data, char *mode, zval **iv, int argc, int dencrypt, zval* return_value TSRMLS_DC)
{
char *cipher_dir_string;
char *module_dir_string;
int block_size, max_key_length, use_key_length, i, count, iv_size;
unsigned long int data_size;
int *key_length_sizes;
char *key_s = NULL, *iv_s;
char *data_s;
MCRYPT td;
MCRYPT_GET_INI
td = mcrypt_module_open(cipher, cipher_dir_string, mode, module_dir_string);
if (td == MCRYPT_FAILED) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, MCRYPT_OPEN_MODULE_FAILED);
RETURN_FALSE;
}
/* Checking for key-length */
max_key_length = mcrypt_enc_get_key_size(td);
if (Z_STRLEN_PP(key) > max_key_length) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Size of key is too large for this algorithm");
}
key_length_sizes = mcrypt_enc_get_supported_key_sizes(td, &count);
if (count == 0 && key_length_sizes == NULL) { /* all lengths 1 - k_l_s = OK */
use_key_length = Z_STRLEN_PP(key);
key_s = emalloc(use_key_length);
memset(key_s, 0, use_key_length);
memcpy(key_s, Z_STRVAL_PP(key), use_key_length);
} else if (count == 1) { /* only m_k_l = OK */
key_s = emalloc(key_length_sizes[0]);
memset(key_s, 0, key_length_sizes[0]);
memcpy(key_s, Z_STRVAL_PP(key), MIN(Z_STRLEN_PP(key), key_length_sizes[0]));
use_key_length = key_length_sizes[0];
} else { /* dertermine smallest supported key > length of requested key */
use_key_length = max_key_length; /* start with max key length */
for (i = 0; i < count; i++) {
if (key_length_sizes[i] >= Z_STRLEN_PP(key) &&
key_length_sizes[i] < use_key_length)
{
use_key_length = key_length_sizes[i];
}
}
key_s = emalloc(use_key_length);
memset(key_s, 0, use_key_length);
memcpy(key_s, Z_STRVAL_PP(key), MIN(Z_STRLEN_PP(key), use_key_length));
}
mcrypt_free (key_length_sizes);
/* Check IV */
iv_s = NULL;
iv_size = mcrypt_enc_get_iv_size (td);
if (argc == 5) {
if (iv_size != Z_STRLEN_PP(iv)) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, MCRYPT_IV_WRONG_SIZE);
} else {
iv_s = emalloc(iv_size + 1);
memcpy(iv_s, Z_STRVAL_PP(iv), iv_size);
}
} else if (argc == 4) {
if (iv_size != 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Attempt to use an empty IV, which is NOT recommend");
iv_s = emalloc(iv_size + 1);
memset(iv_s, 0, iv_size + 1);
}
}
/* Check blocksize */
if (mcrypt_enc_is_block_mode(td) == 1) { /* It's a block algorithm */
block_size = mcrypt_enc_get_block_size(td);
data_size = (((Z_STRLEN_PP(data) - 1) / block_size) + 1) * block_size;
data_s = emalloc(data_size);
memset(data_s, 0, data_size);
memcpy(data_s, Z_STRVAL_PP(data), Z_STRLEN_PP(data));
} else { /* It's not a block algorithm */
data_size = Z_STRLEN_PP(data);
data_s = emalloc(data_size);
memset(data_s, 0, data_size);
memcpy(data_s, Z_STRVAL_PP(data), Z_STRLEN_PP(data));
}
if (mcrypt_generic_init(td, key_s, use_key_length, iv_s) < 0) {
php_error_docref(NULL TSRMLS_CC, E_RECOVERABLE_ERROR, "Mcrypt initialisation failed");
RETURN_FALSE;
}
if (dencrypt == MCRYPT_ENCRYPT) {
mcrypt_generic(td, data_s, data_size);
} else {
mdecrypt_generic(td, data_s, data_size);
}
RETVAL_STRINGL(data_s, data_size, 1);
/* freeing vars */
mcrypt_generic_end(td);
if (key_s != NULL) {
efree (key_s);
}
if (iv_s != NULL) {
efree (iv_s);
}
efree (data_s);
}
/* {{{ proto string mcrypt_encrypt(string cipher, string key, string data, string mode, string iv)
OFB crypt/decrypt data using key key with cipher cipher starting with iv */
PHP_FUNCTION(mcrypt_encrypt)
{
zval **cipher, **key, **data, **mode, **iv;
int argc;
argc = ZEND_NUM_ARGS();
MCRYPT_CHECK_PARAM_COUNT(4, 5)
MCRYPT_GET_CRYPT_ARGS
MCRYPT_CONVERT;
php_mcrypt_do_crypt(Z_STRVAL_PP(cipher), key, data, Z_STRVAL_PP(mode), iv, argc, MCRYPT_ENCRYPT, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto string mcrypt_decrypt(string cipher, string key, string data, string mode, string iv)
OFB crypt/decrypt data using key key with cipher cipher starting with iv */
PHP_FUNCTION(mcrypt_decrypt)
{
zval **cipher, **key, **data, **mode, **iv;
int argc;
argc = ZEND_NUM_ARGS();
MCRYPT_CHECK_PARAM_COUNT(4, 5)
MCRYPT_GET_CRYPT_ARGS
MCRYPT_CONVERT;
php_mcrypt_do_crypt(Z_STRVAL_PP(cipher), key, data, Z_STRVAL_PP(mode), iv, argc, MCRYPT_DECRYPT, return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto string mcrypt_ecb(int cipher, string key, string data, int mode, string iv)
ECB crypt/decrypt data using key key with cipher cipher starting with iv */
PHP_FUNCTION(mcrypt_ecb)
{
zval **cipher, **key, **data, **mode, **iv;
int argc;
argc = ZEND_NUM_ARGS();
MCRYPT_CHECK_PARAM_COUNT(4, 5)
MCRYPT_GET_CRYPT_ARGS
MCRYPT_CONVERT_WO_MODE;
convert_to_long_ex(mode);
php_mcrypt_do_crypt(Z_STRVAL_PP(cipher), key, data, "ecb", iv, argc, Z_LVAL_PP(mode), return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto string mcrypt_cbc(int cipher, string key, string data, int mode, string iv)
CBC crypt/decrypt data using key key with cipher cipher starting with iv */
PHP_FUNCTION(mcrypt_cbc)
{
zval **cipher, **key, **data, **mode, **iv;
int argc;
argc = ZEND_NUM_ARGS();
MCRYPT_CHECK_PARAM_COUNT(4, 5)
MCRYPT_GET_CRYPT_ARGS
MCRYPT_CONVERT_WO_MODE;
convert_to_long_ex(mode);
php_mcrypt_do_crypt(Z_STRVAL_PP(cipher), key, data, "cbc", iv, argc, Z_LVAL_PP(mode), return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto string mcrypt_cfb(int cipher, string key, string data, int mode, string iv)
CFB crypt/decrypt data using key key with cipher cipher starting with iv */
PHP_FUNCTION(mcrypt_cfb)
{
zval **cipher, **key, **data, **mode, **iv;
int argc;
argc = ZEND_NUM_ARGS();
MCRYPT_CHECK_PARAM_COUNT(4, 5)
MCRYPT_GET_CRYPT_ARGS
MCRYPT_CONVERT_WO_MODE;
convert_to_long_ex(mode);
php_mcrypt_do_crypt(Z_STRVAL_PP(cipher), key, data, "cfb", iv, argc, Z_LVAL_PP(mode), return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto string mcrypt_ofb(int cipher, string key, string data, int mode, string iv)
OFB crypt/decrypt data using key key with cipher cipher starting with iv */
PHP_FUNCTION(mcrypt_ofb)
{
zval **cipher, **key, **data, **mode, **iv;
int argc;
argc = ZEND_NUM_ARGS();
MCRYPT_CHECK_PARAM_COUNT(4, 5)
MCRYPT_GET_CRYPT_ARGS
MCRYPT_CONVERT_WO_MODE;
convert_to_long_ex(mode);
php_mcrypt_do_crypt(Z_STRVAL_PP(cipher), key, data, "ofb", iv, argc, Z_LVAL_PP(mode), return_value TSRMLS_CC);
}
/* }}} */
/* {{{ proto string mcrypt_create_iv(int size, int source)
Create an initialization vector (IV) */
PHP_FUNCTION(mcrypt_create_iv)
{
char *iv;
long source = RANDOM;
long size;
int n = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l|l", &size, &source) == FAILURE) {
return;
}
if (size <= 0) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Can not create an IV with size 0 or smaller");
RETURN_FALSE;
}
iv = ecalloc(size + 1, 1);
if (source == RANDOM || source == URANDOM) {
int fd;
size_t read_bytes = 0;
fd = open(source == RANDOM ? "/dev/random" : "/dev/urandom", O_RDONLY);
if (fd < 0) {
efree(iv);
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot open source device");
RETURN_FALSE;
}
while (read_bytes < size) {
n = read(fd, iv + read_bytes, size - read_bytes);
if (n < 0) {
break;
}
read_bytes += n;
}
n = read_bytes;
close(fd);
if (n < size) {
efree(iv);
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not gather sufficient random data");
RETURN_FALSE;
}
} else {
unsigned int ctx;
n = size;
while (size) {
iv[--size] = 255.0 * php_rand_r(&ctx) / RAND_MAX;
}
}
RETURN_STRINGL(iv, n, 0);
}
/* }}} */
#endif
/*
* 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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