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mysqlnd_auth.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) 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: |
| https://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. |
+----------------------------------------------------------------------+
| Authors: Andrey Hristov <[email protected]> |
| Ulf Wendel <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "php.h"
#include "mysqlnd.h"
#include "mysqlnd_structs.h"
#include "mysqlnd_auth.h"
#include "mysqlnd_wireprotocol.h"
#include "mysqlnd_connection.h"
#include "mysqlnd_priv.h"
#include "mysqlnd_charset.h"
#include "mysqlnd_debug.h"
static const char * const mysqlnd_old_passwd = "mysqlnd cannot connect to MySQL 4.1+ using the old insecure authentication. "
"Please use an administration tool to reset your password with the command SET PASSWORD = PASSWORD('your_existing_password'). This will "
"store a new, and more secure, hash value in mysql.user. If this user is used in other scripts executed by PHP 5.2 or earlier you might need to remove the old-passwords "
"flag from your my.cnf file";
/* {{{ mysqlnd_run_authentication */
enum_func_status
mysqlnd_run_authentication(
MYSQLND_CONN_DATA * const conn,
const char * const user,
const char * const passwd,
const size_t passwd_len,
const char * const db,
const size_t db_len,
const MYSQLND_STRING auth_plugin_data,
const char * const auth_protocol,
const unsigned int charset_no,
const MYSQLND_SESSION_OPTIONS * const session_options,
const zend_ulong mysql_flags,
const bool silent,
const bool is_change_user
)
{
enum_func_status ret = FAIL;
bool first_call = TRUE;
char * switch_to_auth_protocol = NULL;
size_t switch_to_auth_protocol_len = 0;
char * requested_protocol = NULL;
zend_uchar * plugin_data;
size_t plugin_data_len;
DBG_ENTER("mysqlnd_run_authentication");
plugin_data_len = auth_plugin_data.l;
plugin_data = mnd_emalloc(plugin_data_len + 1);
if (!plugin_data) {
goto end;
}
memcpy(plugin_data, auth_plugin_data.s, plugin_data_len);
plugin_data[plugin_data_len] = '\0';
requested_protocol = mnd_pestrdup(auth_protocol? auth_protocol : MYSQLND_DEFAULT_AUTH_PROTOCOL, FALSE);
if (!requested_protocol) {
goto end;
}
do {
struct st_mysqlnd_authentication_plugin * auth_plugin = conn->m->fetch_auth_plugin_by_name(requested_protocol);
if (!auth_plugin) {
if (first_call) {
mnd_pefree(requested_protocol, FALSE);
requested_protocol = mnd_pestrdup(MYSQLND_DEFAULT_AUTH_PROTOCOL, FALSE);
} else {
char * msg;
mnd_sprintf(&msg, 0, "The server requested authentication method unknown to the client [%s]", requested_protocol);
SET_CLIENT_ERROR(conn->error_info, CR_NOT_IMPLEMENTED, UNKNOWN_SQLSTATE, msg);
mnd_sprintf_free(msg);
goto end;
}
}
{
zend_uchar * switch_to_auth_protocol_data = NULL;
size_t switch_to_auth_protocol_data_len = 0;
zend_uchar * scrambled_data = NULL;
size_t scrambled_data_len = 0;
switch_to_auth_protocol = NULL;
switch_to_auth_protocol_len = 0;
mysqlnd_set_persistent_string(&conn->authentication_plugin_data, NULL, 0, conn->persistent);
conn->authentication_plugin_data.l = plugin_data_len;
conn->authentication_plugin_data.s = mnd_pemalloc(conn->authentication_plugin_data.l, conn->persistent);
memcpy(conn->authentication_plugin_data.s, plugin_data, plugin_data_len);
DBG_INF_FMT("salt(%zu)=[%.*s]", plugin_data_len, (int) plugin_data_len, plugin_data);
/* The data should be allocated with malloc() */
if (auth_plugin) {
scrambled_data = auth_plugin->methods.get_auth_data(
NULL, &scrambled_data_len, conn, user, passwd,
passwd_len, plugin_data, plugin_data_len,
session_options, conn->protocol_frame_codec->data,
mysql_flags);
}
if (conn->error_info->error_no) {
goto end;
}
if (FALSE == is_change_user) {
ret = mysqlnd_auth_handshake(conn, user, passwd, passwd_len, db, db_len, session_options, mysql_flags,
charset_no,
first_call,
requested_protocol,
auth_plugin, plugin_data, plugin_data_len,
scrambled_data, scrambled_data_len,
&switch_to_auth_protocol, &switch_to_auth_protocol_len,
&switch_to_auth_protocol_data, &switch_to_auth_protocol_data_len
);
} else {
ret = mysqlnd_auth_change_user(conn, user, strlen(user), passwd, passwd_len, db, db_len, silent,
first_call,
requested_protocol,
auth_plugin, plugin_data, plugin_data_len,
scrambled_data, scrambled_data_len,
&switch_to_auth_protocol, &switch_to_auth_protocol_len,
&switch_to_auth_protocol_data, &switch_to_auth_protocol_data_len
);
}
first_call = FALSE;
free(scrambled_data);
DBG_INF_FMT("switch_to_auth_protocol=%s", switch_to_auth_protocol? switch_to_auth_protocol:"n/a");
if (requested_protocol && switch_to_auth_protocol) {
mnd_efree(requested_protocol);
requested_protocol = switch_to_auth_protocol;
}
if (plugin_data) {
mnd_efree(plugin_data);
}
plugin_data_len = switch_to_auth_protocol_data_len;
plugin_data = switch_to_auth_protocol_data;
}
DBG_INF_FMT("conn->error_info->error_no = %d", conn->error_info->error_no);
} while (ret == FAIL && conn->error_info->error_no == 0 && switch_to_auth_protocol != NULL);
if (ret == PASS) {
DBG_INF_FMT("saving requested_protocol=%s", requested_protocol);
conn->m->set_client_option(conn, MYSQLND_OPT_AUTH_PROTOCOL, requested_protocol);
}
end:
if (plugin_data) {
mnd_efree(plugin_data);
}
if (requested_protocol) {
mnd_efree(requested_protocol);
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_switch_to_ssl_if_needed */
static enum_func_status
mysqlnd_switch_to_ssl_if_needed(MYSQLND_CONN_DATA * const conn,
unsigned int charset_no,
const size_t server_capabilities,
const MYSQLND_SESSION_OPTIONS * const session_options,
const zend_ulong mysql_flags)
{
enum_func_status ret = FAIL;
const MYSQLND_CHARSET * charset;
DBG_ENTER("mysqlnd_switch_to_ssl_if_needed");
if (session_options->charset_name && (charset = mysqlnd_find_charset_name(session_options->charset_name))) {
charset_no = charset->nr;
}
{
const size_t client_capabilities = mysql_flags;
ret = conn->command->enable_ssl(conn, client_capabilities, server_capabilities, charset_no);
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_connect_run_authentication */
enum_func_status
mysqlnd_connect_run_authentication(
MYSQLND_CONN_DATA * const conn,
const char * const user,
const char * const passwd,
const char * const db,
const size_t db_len,
const size_t passwd_len,
const MYSQLND_STRING authentication_plugin_data,
const char * const authentication_protocol,
const unsigned int charset_no,
const size_t server_capabilities,
const MYSQLND_SESSION_OPTIONS * const session_options,
const zend_ulong mysql_flags
)
{
enum_func_status ret = FAIL;
DBG_ENTER("mysqlnd_connect_run_authentication");
ret = mysqlnd_switch_to_ssl_if_needed(conn, charset_no, server_capabilities, session_options, mysql_flags);
if (PASS == ret) {
ret = mysqlnd_run_authentication(conn, user, passwd, passwd_len, db, db_len,
authentication_plugin_data, authentication_protocol,
charset_no, session_options, mysql_flags, FALSE /*silent*/, FALSE/*is_change*/);
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_auth_handshake */
enum_func_status
mysqlnd_auth_handshake(MYSQLND_CONN_DATA * conn,
const char * const user,
const char * const passwd,
const size_t passwd_len,
const char * const db,
const size_t db_len,
const MYSQLND_SESSION_OPTIONS * const session_options,
const zend_ulong mysql_flags,
const unsigned int server_charset_no,
const bool use_full_blown_auth_packet,
const char * const auth_protocol,
struct st_mysqlnd_authentication_plugin * auth_plugin,
const zend_uchar * const orig_auth_plugin_data,
const size_t orig_auth_plugin_data_len,
const zend_uchar * const auth_plugin_data,
const size_t auth_plugin_data_len,
char ** switch_to_auth_protocol,
size_t * const switch_to_auth_protocol_len,
zend_uchar ** switch_to_auth_protocol_data,
size_t * const switch_to_auth_protocol_data_len
)
{
enum_func_status ret = FAIL;
const MYSQLND_CHARSET * charset = NULL;
MYSQLND_PACKET_AUTH_RESPONSE auth_resp_packet;
DBG_ENTER("mysqlnd_auth_handshake");
conn->payload_decoder_factory->m.init_auth_response_packet(&auth_resp_packet);
if (use_full_blown_auth_packet != TRUE) {
MYSQLND_PACKET_CHANGE_AUTH_RESPONSE change_auth_resp_packet;
conn->payload_decoder_factory->m.init_change_auth_response_packet(&change_auth_resp_packet);
change_auth_resp_packet.auth_data = auth_plugin_data;
change_auth_resp_packet.auth_data_len = auth_plugin_data_len;
if (!PACKET_WRITE(conn, &change_auth_resp_packet)) {
SET_CONNECTION_STATE(&conn->state, CONN_QUIT_SENT);
SET_CLIENT_ERROR(conn->error_info, CR_SERVER_GONE_ERROR, UNKNOWN_SQLSTATE, mysqlnd_server_gone);
PACKET_FREE(&change_auth_resp_packet);
goto end;
}
PACKET_FREE(&change_auth_resp_packet);
} else {
MYSQLND_PACKET_AUTH auth_packet;
conn->payload_decoder_factory->m.init_auth_packet(&auth_packet);
auth_packet.client_flags = mysql_flags;
auth_packet.max_packet_size = session_options->max_allowed_packet;
if (session_options->charset_name && (charset = mysqlnd_find_charset_name(session_options->charset_name))) {
auth_packet.charset_no = charset->nr;
} else {
auth_packet.charset_no = server_charset_no;
}
auth_packet.send_auth_data = TRUE;
auth_packet.user = user;
auth_packet.db = db;
auth_packet.db_len = db_len;
auth_packet.auth_data = auth_plugin_data;
auth_packet.auth_data_len = auth_plugin_data_len;
auth_packet.auth_plugin_name = auth_protocol;
if (conn->server_capabilities & CLIENT_CONNECT_ATTRS) {
auth_packet.connect_attr = conn->options->connect_attr;
}
if (!PACKET_WRITE(conn, &auth_packet)) {
PACKET_FREE(&auth_packet);
goto end;
}
if (use_full_blown_auth_packet == TRUE) {
conn->charset = mysqlnd_find_charset_nr(auth_packet.charset_no);
}
PACKET_FREE(&auth_packet);
}
if (auth_plugin && auth_plugin->methods.handle_server_response) {
if (FAIL == auth_plugin->methods.handle_server_response(auth_plugin, conn,
orig_auth_plugin_data, orig_auth_plugin_data_len, passwd, passwd_len,
switch_to_auth_protocol, switch_to_auth_protocol_len,
switch_to_auth_protocol_data, switch_to_auth_protocol_data_len)) {
goto end;
}
}
if (FAIL == PACKET_READ(conn, &auth_resp_packet) || auth_resp_packet.response_code >= 0xFE) {
if (auth_resp_packet.response_code == 0xFE) {
/* old authentication with new server !*/
if (!auth_resp_packet.new_auth_protocol) {
DBG_ERR(mysqlnd_old_passwd);
SET_CLIENT_ERROR(conn->error_info, CR_UNKNOWN_ERROR, UNKNOWN_SQLSTATE, mysqlnd_old_passwd);
} else {
*switch_to_auth_protocol = mnd_pestrndup(auth_resp_packet.new_auth_protocol, auth_resp_packet.new_auth_protocol_len, FALSE);
*switch_to_auth_protocol_len = auth_resp_packet.new_auth_protocol_len;
if (auth_resp_packet.new_auth_protocol_data) {
*switch_to_auth_protocol_data_len = auth_resp_packet.new_auth_protocol_data_len;
*switch_to_auth_protocol_data = mnd_emalloc(*switch_to_auth_protocol_data_len);
memcpy(*switch_to_auth_protocol_data, auth_resp_packet.new_auth_protocol_data, *switch_to_auth_protocol_data_len);
} else {
*switch_to_auth_protocol_data = NULL;
*switch_to_auth_protocol_data_len = 0;
}
}
} else if (auth_resp_packet.response_code == 0xFF) {
if (auth_resp_packet.sqlstate[0]) {
strlcpy(conn->error_info->sqlstate, auth_resp_packet.sqlstate, sizeof(conn->error_info->sqlstate));
DBG_ERR_FMT("ERROR:%u [SQLSTATE:%s] %s", auth_resp_packet.error_no, auth_resp_packet.sqlstate, auth_resp_packet.error);
}
SET_CLIENT_ERROR(conn->error_info, auth_resp_packet.error_no, UNKNOWN_SQLSTATE, auth_resp_packet.error);
}
goto end;
}
mysqlnd_set_string(&conn->last_message, auth_resp_packet.message, auth_resp_packet.message_len);
ret = PASS;
end:
PACKET_FREE(&auth_resp_packet);
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_auth_change_user */
enum_func_status
mysqlnd_auth_change_user(MYSQLND_CONN_DATA * const conn,
const char * const user,
const size_t user_len,
const char * const passwd,
const size_t passwd_len,
const char * const db,
const size_t db_len,
const bool silent,
const bool use_full_blown_auth_packet,
const char * const auth_protocol,
struct st_mysqlnd_authentication_plugin * auth_plugin,
const zend_uchar * const orig_auth_plugin_data,
const size_t orig_auth_plugin_data_len,
const zend_uchar * const auth_plugin_data,
const size_t auth_plugin_data_len,
char ** switch_to_auth_protocol,
size_t * const switch_to_auth_protocol_len,
zend_uchar ** switch_to_auth_protocol_data,
size_t * const switch_to_auth_protocol_data_len
)
{
enum_func_status ret = FAIL;
const MYSQLND_CHARSET * old_cs = conn->charset;
MYSQLND_PACKET_CHG_USER_RESPONSE chg_user_resp;
DBG_ENTER("mysqlnd_auth_change_user");
conn->payload_decoder_factory->m.init_change_user_response_packet(&chg_user_resp);
if (use_full_blown_auth_packet != TRUE) {
MYSQLND_PACKET_CHANGE_AUTH_RESPONSE change_auth_resp_packet;
conn->payload_decoder_factory->m.init_change_auth_response_packet(&change_auth_resp_packet);
change_auth_resp_packet.auth_data = auth_plugin_data;
change_auth_resp_packet.auth_data_len = auth_plugin_data_len;
if (!PACKET_WRITE(conn, &change_auth_resp_packet)) {
SET_CONNECTION_STATE(&conn->state, CONN_QUIT_SENT);
SET_CLIENT_ERROR(conn->error_info, CR_SERVER_GONE_ERROR, UNKNOWN_SQLSTATE, mysqlnd_server_gone);
PACKET_FREE(&change_auth_resp_packet);
goto end;
}
PACKET_FREE(&change_auth_resp_packet);
} else {
MYSQLND_PACKET_AUTH auth_packet;
conn->payload_decoder_factory->m.init_auth_packet(&auth_packet);
auth_packet.is_change_user_packet = TRUE;
auth_packet.user = user;
auth_packet.db = db;
auth_packet.db_len = db_len;
auth_packet.silent = silent;
auth_packet.auth_data = auth_plugin_data;
auth_packet.auth_data_len = auth_plugin_data_len;
auth_packet.auth_plugin_name = auth_protocol;
if (conn->server_capabilities & CLIENT_CONNECT_ATTRS) {
auth_packet.connect_attr = conn->options->connect_attr;
}
if (conn->m->get_server_version(conn) >= 50123) {
auth_packet.charset_no = conn->charset->nr;
}
if (!PACKET_WRITE(conn, &auth_packet)) {
SET_CONNECTION_STATE(&conn->state, CONN_QUIT_SENT);
SET_CLIENT_ERROR(conn->error_info, CR_SERVER_GONE_ERROR, UNKNOWN_SQLSTATE, mysqlnd_server_gone);
PACKET_FREE(&auth_packet);
goto end;
}
PACKET_FREE(&auth_packet);
}
if (auth_plugin && auth_plugin->methods.handle_server_response) {
if (FAIL == auth_plugin->methods.handle_server_response(auth_plugin, conn,
orig_auth_plugin_data, orig_auth_plugin_data_len, passwd, passwd_len,
switch_to_auth_protocol, switch_to_auth_protocol_len,
switch_to_auth_protocol_data, switch_to_auth_protocol_data_len)) {
goto end;
}
}
ret = PACKET_READ(conn, &chg_user_resp);
COPY_CLIENT_ERROR(conn->error_info, chg_user_resp.error_info);
if (0xFE == chg_user_resp.response_code) {
ret = FAIL;
if (!chg_user_resp.new_auth_protocol) {
DBG_ERR(mysqlnd_old_passwd);
SET_CLIENT_ERROR(conn->error_info, CR_UNKNOWN_ERROR, UNKNOWN_SQLSTATE, mysqlnd_old_passwd);
} else {
*switch_to_auth_protocol = mnd_pestrndup(chg_user_resp.new_auth_protocol, chg_user_resp.new_auth_protocol_len, FALSE);
*switch_to_auth_protocol_len = chg_user_resp.new_auth_protocol_len;
if (chg_user_resp.new_auth_protocol_data) {
*switch_to_auth_protocol_data_len = chg_user_resp.new_auth_protocol_data_len;
*switch_to_auth_protocol_data = mnd_emalloc(*switch_to_auth_protocol_data_len);
memcpy(*switch_to_auth_protocol_data, chg_user_resp.new_auth_protocol_data, *switch_to_auth_protocol_data_len);
} else {
*switch_to_auth_protocol_data = NULL;
*switch_to_auth_protocol_data_len = 0;
}
}
}
if (conn->error_info->error_no) {
ret = FAIL;
/*
COM_CHANGE_USER is broken in 5.1. At least in 5.1.15 and 5.1.14, 5.1.11 is immune.
bug#25371 mysql_change_user() triggers "packets out of sync"
When it gets fixed, there should be one more check here
*/
if (conn->m->get_server_version(conn) > 50113L &&conn->m->get_server_version(conn) < 50118L) {
MYSQLND_PACKET_OK redundant_error_packet;
conn->payload_decoder_factory->m.init_ok_packet(&redundant_error_packet);
PACKET_READ(conn, &redundant_error_packet);
PACKET_FREE(&redundant_error_packet);
DBG_INF_FMT("Server is " ZEND_ULONG_FMT ", buggy, sends two ERR messages", conn->m->get_server_version(conn));
}
}
if (ret == PASS) {
ZEND_ASSERT(conn->username.s != user && conn->password.s != passwd);
mysqlnd_set_persistent_string(&conn->username, user, user_len, conn->persistent);
mysqlnd_set_persistent_string(&conn->password, passwd, passwd_len, conn->persistent);
mysqlnd_set_string(&conn->last_message, NULL, 0);
UPSERT_STATUS_RESET(conn->upsert_status);
/* set charset for old servers */
if (conn->m->get_server_version(conn) < 50123) {
ret = conn->m->set_charset(conn, old_cs->name);
}
} else if (ret == FAIL && chg_user_resp.server_asked_323_auth == TRUE) {
/* old authentication with new server !*/
DBG_ERR(mysqlnd_old_passwd);
SET_CLIENT_ERROR(conn->error_info, CR_UNKNOWN_ERROR, UNKNOWN_SQLSTATE, mysqlnd_old_passwd);
}
end:
PACKET_FREE(&chg_user_resp);
DBG_RETURN(ret);
}
/* }}} */
/******************************************* MySQL Native Password ***********************************/
#include "ext/standard/sha1.h"
/* {{{ php_mysqlnd_crypt */
static void
php_mysqlnd_crypt(zend_uchar *buffer, const zend_uchar *s1, const zend_uchar *s2, size_t len)
{
const zend_uchar *s1_end = s1 + len;
while (s1 < s1_end) {
*buffer++= *s1++ ^ *s2++;
}
}
/* }}} */
/* {{{ php_mysqlnd_scramble */
void php_mysqlnd_scramble(zend_uchar * const buffer, const zend_uchar * const scramble, const zend_uchar * const password, const size_t password_len)
{
PHP_SHA1_CTX context;
zend_uchar sha1[SHA1_MAX_LENGTH];
zend_uchar sha2[SHA1_MAX_LENGTH];
/* Phase 1: hash password */
PHP_SHA1Init(&context);
PHP_SHA1Update(&context, password, password_len);
PHP_SHA1Final(sha1, &context);
/* Phase 2: hash sha1 */
PHP_SHA1Init(&context);
PHP_SHA1Update(&context, (zend_uchar*)sha1, SHA1_MAX_LENGTH);
PHP_SHA1Final(sha2, &context);
/* Phase 3: hash scramble + sha2 */
PHP_SHA1Init(&context);
PHP_SHA1Update(&context, scramble, SCRAMBLE_LENGTH);
PHP_SHA1Update(&context, (zend_uchar*)sha2, SHA1_MAX_LENGTH);
PHP_SHA1Final(buffer, &context);
/* let's crypt buffer now */
php_mysqlnd_crypt(buffer, (const zend_uchar *)buffer, (const zend_uchar *)sha1, SHA1_MAX_LENGTH);
}
/* }}} */
/* {{{ mysqlnd_native_auth_get_auth_data */
static zend_uchar *
mysqlnd_native_auth_get_auth_data(struct st_mysqlnd_authentication_plugin * self,
size_t * auth_data_len,
MYSQLND_CONN_DATA * conn, const char * const user, const char * const passwd,
const size_t passwd_len, zend_uchar * auth_plugin_data, const size_t auth_plugin_data_len,
const MYSQLND_SESSION_OPTIONS * const session_options,
const MYSQLND_PFC_DATA * const pfc_data,
const zend_ulong mysql_flags
)
{
zend_uchar * ret = NULL;
DBG_ENTER("mysqlnd_native_auth_get_auth_data");
*auth_data_len = 0;
/* 5.5.x reports 21 as scramble length because it needs to show the length of the data before the plugin name */
if (auth_plugin_data_len < SCRAMBLE_LENGTH) {
/* mysql_native_password only works with SCRAMBLE_LENGTH scramble */
SET_CLIENT_ERROR(conn->error_info, CR_MALFORMED_PACKET, UNKNOWN_SQLSTATE, "The server sent wrong length for scramble");
DBG_ERR_FMT("The server sent wrong length for scramble %zu. Expected %u", auth_plugin_data_len, SCRAMBLE_LENGTH);
DBG_RETURN(NULL);
}
/* copy scrambled pass*/
if (passwd && passwd_len) {
ret = malloc(SCRAMBLE_LENGTH);
*auth_data_len = SCRAMBLE_LENGTH;
/* In 4.1 we use CLIENT_SECURE_CONNECTION and thus the len of the buf should be passed */
php_mysqlnd_scramble((zend_uchar*)ret, auth_plugin_data, (zend_uchar*)passwd, passwd_len);
}
DBG_RETURN(ret);
}
/* }}} */
static struct st_mysqlnd_authentication_plugin mysqlnd_native_auth_plugin =
{
{
MYSQLND_PLUGIN_API_VERSION,
"auth_plugin_mysql_native_password",
MYSQLND_VERSION_ID,
PHP_MYSQLND_VERSION,
"PHP License 3.01",
"Andrey Hristov <[email protected]>, Ulf Wendel <[email protected]>, Georg Richter <[email protected]>",
{
NULL, /* no statistics , will be filled later if there are some */
NULL, /* no statistics */
},
{
NULL /* plugin shutdown */
}
},
{/* methods */
mysqlnd_native_auth_get_auth_data,
NULL
}
};
/******************************************* PAM Authentication ***********************************/
/* {{{ mysqlnd_pam_auth_get_auth_data */
static zend_uchar *
mysqlnd_pam_auth_get_auth_data(struct st_mysqlnd_authentication_plugin * self,
size_t * auth_data_len,
MYSQLND_CONN_DATA * conn, const char * const user, const char * const passwd,
const size_t passwd_len, zend_uchar * auth_plugin_data, const size_t auth_plugin_data_len,
const MYSQLND_SESSION_OPTIONS * const session_options,
const MYSQLND_PFC_DATA * const pfc_data,
const zend_ulong mysql_flags
)
{
zend_uchar * ret = NULL;
/* copy pass*/
if (passwd && passwd_len) {
ret = (zend_uchar*) zend_strndup(passwd, passwd_len);
}
/*
Trailing null required. bug#78680
https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_connection_phase_authentication_methods_clear_text_password.html
*/
*auth_data_len = passwd_len + 1;
return ret;
}
/* }}} */
static struct st_mysqlnd_authentication_plugin mysqlnd_pam_authentication_plugin =
{
{
MYSQLND_PLUGIN_API_VERSION,
"auth_plugin_mysql_clear_password",
MYSQLND_VERSION_ID,
PHP_MYSQLND_VERSION,
"PHP License 3.01",
"Andrey Hristov <[email protected]>, Ulf Wendel <[email protected]>, Georg Richter <[email protected]>",
{
NULL, /* no statistics , will be filled later if there are some */
NULL, /* no statistics */
},
{
NULL /* plugin shutdown */
}
},
{/* methods */
mysqlnd_pam_auth_get_auth_data,
NULL
}
};
/******************************************* SHA256 Password ***********************************/
#ifdef MYSQLND_HAVE_SSL
static void
mysqlnd_xor_string(char * dst, const size_t dst_len, const char * xor_str, const size_t xor_str_len)
{
unsigned int i;
for (i = 0; i <= dst_len; ++i) {
dst[i] ^= xor_str[i % xor_str_len];
}
}
#ifndef PHP_WIN32
#include <openssl/rsa.h>
#include <openssl/pem.h>
#include <openssl/err.h>
typedef EVP_PKEY * mysqlnd_rsa_t;
/* {{{ mysqlnd_sha256_get_rsa_from_pem */
static mysqlnd_rsa_t
mysqlnd_sha256_get_rsa_from_pem(const char *buf, size_t len)
{
BIO *bio = BIO_new_mem_buf(buf, len);
EVP_PKEY *ret = PEM_read_bio_PUBKEY(bio, NULL, NULL, NULL);
BIO_free(bio);
return ret;
}
/* }}} */
/* {{{ mysqlnd_sha256_public_encrypt */
static zend_uchar *
mysqlnd_sha256_public_encrypt(MYSQLND_CONN_DATA * conn, mysqlnd_rsa_t server_public_key, size_t passwd_len, size_t * auth_data_len, char *xor_str)
{
zend_uchar * ret = NULL;
size_t server_public_key_len = (size_t) EVP_PKEY_size(server_public_key);
DBG_ENTER("mysqlnd_sha256_public_encrypt");
/*
Because RSA_PKCS1_OAEP_PADDING is used there is a restriction on the passwd_len.
RSA_PKCS1_OAEP_PADDING is recommended for new applications. See more here:
http://www.openssl.org/docs/crypto/RSA_public_encrypt.html
*/
if (server_public_key_len <= passwd_len + 41) {
/* password message is to long */
EVP_PKEY_free(server_public_key);
SET_CLIENT_ERROR(conn->error_info, CR_UNKNOWN_ERROR, UNKNOWN_SQLSTATE, "password is too long");
DBG_ERR("password is too long");
DBG_RETURN(NULL);
}
*auth_data_len = server_public_key_len;
ret = malloc(*auth_data_len);
EVP_PKEY_CTX *ctx = EVP_PKEY_CTX_new(server_public_key, NULL);
if (!ctx || EVP_PKEY_encrypt_init(ctx) <= 0 ||
EVP_PKEY_CTX_set_rsa_padding(ctx, RSA_PKCS1_OAEP_PADDING) <= 0 ||
EVP_PKEY_encrypt(ctx, ret, &server_public_key_len, (zend_uchar *) xor_str, passwd_len + 1) <= 0) {
DBG_ERR("encrypt failed");
free(ret);
ret = NULL;
}
EVP_PKEY_CTX_free(ctx);
EVP_PKEY_free(server_public_key);
DBG_RETURN(ret);
}
/* }}} */
#else
#include <wincrypt.h>
#include <bcrypt.h>
typedef HANDLE mysqlnd_rsa_t;
/* {{{ mysqlnd_sha256_get_rsa_from_pem */
static mysqlnd_rsa_t
mysqlnd_sha256_get_rsa_from_pem(const char *buf, size_t len)
{
BCRYPT_KEY_HANDLE ret = 0;
LPSTR der_buf = NULL;
DWORD der_len;
CERT_PUBLIC_KEY_INFO *key_info = NULL;
DWORD key_info_len;
ALLOCA_FLAG(use_heap);
if (!CryptStringToBinaryA(buf, len, CRYPT_STRING_BASE64HEADER, NULL, &der_len, NULL, NULL)) {
goto finish;
}
der_buf = do_alloca(der_len, use_heap);
if (!CryptStringToBinaryA(buf, len, CRYPT_STRING_BASE64HEADER, der_buf, &der_len, NULL, NULL)) {
goto finish;
}
if (!CryptDecodeObjectEx(X509_ASN_ENCODING, X509_PUBLIC_KEY_INFO, der_buf, der_len, CRYPT_ENCODE_ALLOC_FLAG, NULL, &key_info, &key_info_len)) {
goto finish;
}
if (!CryptImportPublicKeyInfoEx2(X509_ASN_ENCODING, key_info, CRYPT_OID_INFO_PUBKEY_ENCRYPT_KEY_FLAG, NULL, &ret)) {
goto finish;
}
finish:
if (key_info) {
LocalFree(key_info);
}
if (der_buf) {
free_alloca(der_buf, use_heap);
}
return (mysqlnd_rsa_t) ret;
}
/* }}} */
/* {{{ mysqlnd_sha256_public_encrypt */
static zend_uchar *
mysqlnd_sha256_public_encrypt(MYSQLND_CONN_DATA * conn, mysqlnd_rsa_t server_public_key, size_t passwd_len, size_t * auth_data_len, char *xor_str)
{
zend_uchar * ret = NULL;
DWORD server_public_key_len = passwd_len;
BCRYPT_OAEP_PADDING_INFO padding_info;
DBG_ENTER("mysqlnd_sha256_public_encrypt");
ZeroMemory(&padding_info, sizeof padding_info);
padding_info.pszAlgId = BCRYPT_SHA1_ALGORITHM;
if (BCryptEncrypt((BCRYPT_KEY_HANDLE) server_public_key, xor_str, passwd_len + 1, &padding_info,
NULL, 0, NULL, 0, &server_public_key_len, BCRYPT_PAD_OAEP)) {
DBG_RETURN(0);
}
/*
Because RSA_PKCS1_OAEP_PADDING is used there is a restriction on the passwd_len.
RSA_PKCS1_OAEP_PADDING is recommended for new applications. See more here:
http://www.openssl.org/docs/crypto/RSA_public_encrypt.html
*/
if ((size_t) server_public_key_len <= passwd_len + 41) {
/* password message is to long */
BCryptDestroyKey((BCRYPT_KEY_HANDLE) server_public_key);
SET_CLIENT_ERROR(conn->error_info, CR_UNKNOWN_ERROR, UNKNOWN_SQLSTATE, "password is too long");
DBG_ERR("password is too long");
DBG_RETURN(0);
}
*auth_data_len = server_public_key_len;
ret = malloc(*auth_data_len);
if (BCryptEncrypt((BCRYPT_KEY_HANDLE) server_public_key, xor_str, passwd_len + 1, &padding_info,
NULL, 0, ret, server_public_key_len, &server_public_key_len, BCRYPT_PAD_OAEP)) {
BCryptDestroyKey((BCRYPT_KEY_HANDLE) server_public_key);
DBG_RETURN(0);
}
BCryptDestroyKey((BCRYPT_KEY_HANDLE) server_public_key);
DBG_RETURN(ret);
}
/* }}} */
#endif
/* {{{ mysqlnd_sha256_get_rsa_key */
static mysqlnd_rsa_t
mysqlnd_sha256_get_rsa_key(MYSQLND_CONN_DATA * conn,
const MYSQLND_SESSION_OPTIONS * const session_options,
const MYSQLND_PFC_DATA * const pfc_data
)
{
mysqlnd_rsa_t ret = NULL;
const char * fname = (pfc_data->sha256_server_public_key && pfc_data->sha256_server_public_key[0] != '\0')?
pfc_data->sha256_server_public_key:
MYSQLND_G(sha256_server_public_key);
php_stream * stream;
DBG_ENTER("mysqlnd_sha256_get_rsa_key");
DBG_INF_FMT("options_s256_pk=[%s] MYSQLND_G(sha256_server_public_key)=[%s]",
pfc_data->sha256_server_public_key? pfc_data->sha256_server_public_key:"n/a",
MYSQLND_G(sha256_server_public_key)? MYSQLND_G(sha256_server_public_key):"n/a");
if (!fname || fname[0] == '\0') {
MYSQLND_PACKET_SHA256_PK_REQUEST pk_req_packet;
MYSQLND_PACKET_SHA256_PK_REQUEST_RESPONSE pk_resp_packet;
do {
DBG_INF("requesting the public key from the server");
conn->payload_decoder_factory->m.init_sha256_pk_request_packet(&pk_req_packet);
conn->payload_decoder_factory->m.init_sha256_pk_request_response_packet(&pk_resp_packet);
if (! PACKET_WRITE(conn, &pk_req_packet)) {
DBG_ERR_FMT("Error while sending public key request packet");
php_error(E_WARNING, "Error while sending public key request packet. PID=%d", getpid());
SET_CONNECTION_STATE(&conn->state, CONN_QUIT_SENT);
break;
}
if (FAIL == PACKET_READ(conn, &pk_resp_packet) || NULL == pk_resp_packet.public_key) {
DBG_ERR_FMT("Error while receiving public key");
php_error(E_WARNING, "Error while receiving public key. PID=%d", getpid());
SET_CONNECTION_STATE(&conn->state, CONN_QUIT_SENT);
break;
}
DBG_INF_FMT("Public key(%zu):\n%s", pk_resp_packet.public_key_len, pk_resp_packet.public_key);
/* now extract the public key */
ret = mysqlnd_sha256_get_rsa_from_pem((const char *) pk_resp_packet.public_key, pk_resp_packet.public_key_len);
} while (0);
PACKET_FREE(&pk_req_packet);
PACKET_FREE(&pk_resp_packet);
DBG_INF_FMT("ret=%p", ret);
DBG_RETURN(ret);
SET_CLIENT_ERROR(conn->error_info, CR_UNKNOWN_ERROR, UNKNOWN_SQLSTATE,
"sha256_server_public_key is not set for the connection or as mysqlnd.sha256_server_public_key");
DBG_ERR("server_public_key is not set");
DBG_RETURN(NULL);
} else {
zend_string * key_str;
DBG_INF_FMT("Key in a file. [%s]", fname);
stream = php_stream_open_wrapper((char *) fname, "rb", REPORT_ERRORS, NULL);
if (stream) {
if ((key_str = php_stream_copy_to_mem(stream, PHP_STREAM_COPY_ALL, 0)) != NULL) {
ret = mysqlnd_sha256_get_rsa_from_pem(ZSTR_VAL(key_str), ZSTR_LEN(key_str));
DBG_INF("Successfully loaded");
DBG_INF_FMT("Public key:%*.s", (int) ZSTR_LEN(key_str), ZSTR_VAL(key_str));
zend_string_release_ex(key_str, 0);
}
php_stream_close(stream);
}
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_sha256_auth_get_auth_data */
static zend_uchar *
mysqlnd_sha256_auth_get_auth_data(struct st_mysqlnd_authentication_plugin * self,
size_t * auth_data_len,
MYSQLND_CONN_DATA * conn, const char * const user, const char * const passwd,
const size_t passwd_len, zend_uchar * auth_plugin_data, const size_t auth_plugin_data_len,
const MYSQLND_SESSION_OPTIONS * const session_options,
const MYSQLND_PFC_DATA * const pfc_data,
const zend_ulong mysql_flags
)
{
mysqlnd_rsa_t server_public_key;
zend_uchar * ret = NULL;
DBG_ENTER("mysqlnd_sha256_auth_get_auth_data");
DBG_INF_FMT("salt(%zu)=[%.*s]", auth_plugin_data_len, (int) auth_plugin_data_len, auth_plugin_data);
if (conn->vio->data->ssl) {
DBG_INF("simple clear text under SSL");
/* clear text under SSL */
/* NUL termination byte required: https://dev.mysql.com/doc/dev/mysql-server/latest/page_protocol_connection_phase_authentication_methods_clear_text_password.html
* (this is similar to bug #78680, but now as GH-11440) */
*auth_data_len = passwd_len + 1;
ret = malloc(passwd_len + 1);
memcpy(ret, passwd, passwd_len);
ret[passwd_len] = '\0';
} else {
*auth_data_len = 0;
server_public_key = mysqlnd_sha256_get_rsa_key(conn, session_options, pfc_data);
if (server_public_key) {
ALLOCA_FLAG(use_heap);
char *xor_str = do_alloca(passwd_len + 1, use_heap);
memcpy(xor_str, passwd, passwd_len);
xor_str[passwd_len] = '\0';
/* https://dev.mysql.com/doc/dev/mysql-server/latest/page_caching_sha2_authentication_exchanges.html
* This tells us that the nonce is 20 (==SCRAMBLE_LENGTH) bytes long.
* In a 5.5+ server we might get additional scramble data in php_mysqlnd_greet_read, not used by this authentication method. */
mysqlnd_xor_string(xor_str, passwd_len, (char *) auth_plugin_data, SCRAMBLE_LENGTH);
ret = mysqlnd_sha256_public_encrypt(conn, server_public_key, passwd_len, auth_data_len, xor_str);
free_alloca(xor_str, use_heap);
}
}
DBG_RETURN(ret);
}
/* }}} */
static struct st_mysqlnd_authentication_plugin mysqlnd_sha256_authentication_plugin =
{
{
MYSQLND_PLUGIN_API_VERSION,
"auth_plugin_sha256_password",
MYSQLND_VERSION_ID,
PHP_MYSQLND_VERSION,
"PHP License 3.01",
"Andrey Hristov <[email protected]>, Ulf Wendel <[email protected]>",
{
NULL, /* no statistics , will be filled later if there are some */
NULL, /* no statistics */
},
{
NULL /* plugin shutdown */
}
},
{/* methods */
mysqlnd_sha256_auth_get_auth_data,
NULL
}
};
#endif
/*************************************** CACHING SHA2 Password *******************************/
#ifdef MYSQLND_HAVE_SSL
#undef L64
#include "ext/hash/php_hash.h"
#include "ext/hash/php_hash_sha.h"
#define SHA256_LENGTH 32
/* {{{ php_mysqlnd_scramble_sha2 */
void php_mysqlnd_scramble_sha2(zend_uchar * const buffer, const zend_uchar * const scramble, const zend_uchar * const password, const size_t password_len)
{
PHP_SHA256_CTX context;
zend_uchar sha1[SHA256_LENGTH];
zend_uchar sha2[SHA256_LENGTH];
/* Phase 1: hash password */
PHP_SHA256Init(&context);
PHP_SHA256Update(&context, password, password_len);
PHP_SHA256Final(sha1, &context);
/* Phase 2: hash sha1 */
PHP_SHA256Init(&context);
PHP_SHA256Update(&context, (zend_uchar*)sha1, SHA256_LENGTH);
PHP_SHA256Final(sha2, &context);
/* Phase 3: hash scramble + sha2 */
PHP_SHA256Init(&context);
PHP_SHA256Update(&context, (zend_uchar*)sha2, SHA256_LENGTH);
PHP_SHA256Update(&context, scramble, SCRAMBLE_LENGTH);
PHP_SHA256Final(buffer, &context);