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swoole_mysql.c
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/*
+----------------------------------------------------------------------+
| Swoole |
+----------------------------------------------------------------------+
| Copyright (c) 2012-2015 The Swoole Group |
+----------------------------------------------------------------------+
| This source file is subject to version 2.0 of the Apache 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.apache.org/licenses/LICENSE-2.0.html |
| If you did not receive a copy of the Apache2.0 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: Tianfeng Han <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "php_swoole_async.h"
#include "swoole_mysql_async.h"
// see mysqlnd 'L64' macro redefined
#undef L64
#include "ext/hash/php_hash.h"
#include "ext/hash/php_hash_sha.h"
#include "ext/standard/php_math.h"
#ifdef SW_MYSQL_RSA_SUPPORT
#include <openssl/rsa.h>
#include <openssl/pem.h>
#endif
static swString *mysql_request_buffer;
static PHP_METHOD(swoole_mysql, __construct);
static PHP_METHOD(swoole_mysql, __destruct);
static PHP_METHOD(swoole_mysql, connect);
#ifdef SW_USE_MYSQLND
static PHP_METHOD(swoole_mysql, escape);
#endif
static PHP_METHOD(swoole_mysql, query);
static PHP_METHOD(swoole_mysql, begin);
static PHP_METHOD(swoole_mysql, commit);
static PHP_METHOD(swoole_mysql, rollback);
static PHP_METHOD(swoole_mysql, getState);
static PHP_METHOD(swoole_mysql, close);
static PHP_METHOD(swoole_mysql, on);
static zend_class_entry swoole_mysql_ce;
static zend_class_entry *swoole_mysql_ce_ptr;
static zend_object_handlers swoole_mysql_handlers;
static zend_class_entry swoole_mysql_exception_ce;
static zend_class_entry *swoole_mysql_exception_ce_ptr;
static zend_object_handlers swoole_mysql_exception_handlers;
#define DATETIME_MAX_SIZE 20
typedef struct _mysql_charset
{
unsigned int nr;
const char *name;
const char *collation;
} mysql_charset;
typedef struct _mysql_big_data_info {
// for used:
ulong_t len; // data length
ulong_t remaining_size; // max remaining size that can be read
uint32_t currrent_packet_remaining_size; // remaining size of current packet
char *read_p; // where to start reading data
// for result:
uint32_t ext_header_len; // extra packet header length
uint32_t ext_packet_len; // extra packet length (body only)
} mysql_big_data_info;
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_void, 0, 0, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_mysql_on, 0, 0, 2)
ZEND_ARG_INFO(0, event_name)
ZEND_ARG_INFO(0, callback)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_mysql_connect, 0, 0, 2)
ZEND_ARG_ARRAY_INFO(0, server_config, 0)
ZEND_ARG_INFO(0, callback)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_mysql_begin, 0, 0, 1)
ZEND_ARG_INFO(0, callback)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_mysql_commit, 0, 0, 1)
ZEND_ARG_INFO(0, callback)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_mysql_rollback, 0, 0, 1)
ZEND_ARG_INFO(0, callback)
ZEND_END_ARG_INFO()
#ifdef SW_USE_MYSQLND
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_mysql_escape, 0, 0, 1)
ZEND_ARG_INFO(0, string)
ZEND_ARG_INFO(0, flags)
ZEND_END_ARG_INFO()
#endif
ZEND_BEGIN_ARG_INFO_EX(arginfo_swoole_mysql_query, 0, 0, 2)
ZEND_ARG_INFO(0, sql)
ZEND_ARG_INFO(0, callback)
ZEND_END_ARG_INFO()
static const zend_function_entry swoole_mysql_methods[] =
{
PHP_ME(swoole_mysql, __construct, arginfo_swoole_void, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql, __destruct, arginfo_swoole_void, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql, connect, arginfo_swoole_mysql_connect, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql, begin, arginfo_swoole_mysql_begin, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql, commit, arginfo_swoole_mysql_commit, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql, rollback, arginfo_swoole_mysql_rollback, ZEND_ACC_PUBLIC)
#ifdef SW_USE_MYSQLND
PHP_ME(swoole_mysql, escape, arginfo_swoole_mysql_escape, ZEND_ACC_PUBLIC)
#endif
PHP_ME(swoole_mysql, query, arginfo_swoole_mysql_query, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql, close, arginfo_swoole_void, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql, getState, arginfo_swoole_void, ZEND_ACC_PUBLIC)
PHP_ME(swoole_mysql, on, arginfo_swoole_mysql_on, ZEND_ACC_PUBLIC)
PHP_FE_END
};
static void mysql_client_free(mysql_client *client, zval* zobject);
static void mysql_columns_free(mysql_client *client);
static int mysql_query(zval *zobject, mysql_client *client, swString *sql, zval *callback);
static void mysql_client_free(mysql_client *client, zval* zobject)
{
if (client->cli->timer)
{
swTimer_del(&SwooleG.timer, client->cli->timer);
client->cli->timer = NULL;
}
//clear connector
if (client->connector.host)
{
efree(client->connector.host);
client->connector.host = NULL;
}
if (client->connector.user)
{
efree(client->connector.user);
client->connector.user = NULL;
}
if (client->connector.password)
{
efree(client->connector.password);
client->connector.password = NULL;
}
if (client->connector.database)
{
efree(client->connector.database);
client->connector.database = NULL;
}
//close the connection
client->cli->close(client->cli);
//release client object memory
swClient_free(client->cli);
efree(client->cli);
client->cli = NULL;
client->connected = 0;
}
static void mysql_columns_free(mysql_client *client)
{
if (client->response.columns)
{
int i;
for (i = 0; i < client->response.num_column; i++)
{
if (client->response.columns[i].buffer)
{
efree(client->response.columns[i].buffer);
client->response.columns[i].buffer = NULL;
}
}
efree(client->response.columns);
client->response.columns = NULL;
}
}
static void swoole_mysql_onTimeout(swTimer *timer, swTimer_node *tnode);
static int swoole_mysql_onRead(swReactor *reactor, swEvent *event);
static int swoole_mysql_onWrite(swReactor *reactor, swEvent *event);
static int swoole_mysql_onError(swReactor *reactor, swEvent *event);
static void swoole_mysql_onConnect(mysql_client *client);
void swoole_mysql_init(int module_number)
{
SWOOLE_INIT_CLASS_ENTRY(swoole_mysql, "Swoole\\MySQL", "swoole_mysql", NULL, swoole_mysql_methods);
SWOOLE_SET_CLASS_SERIALIZABLE(swoole_mysql, zend_class_serialize_deny, zend_class_unserialize_deny);
SWOOLE_SET_CLASS_CLONEABLE(swoole_mysql, zend_class_clone_deny);
SWOOLE_SET_CLASS_UNSET_PROPERTY_HANDLER(swoole_mysql, zend_class_unset_property_deny);
SWOOLE_INIT_CLASS_ENTRY_EX(swoole_mysql_exception, "Swoole\\MySQL\\Exception", "swoole_mysql_exception", NULL, NULL, swoole_exception);
zend_declare_property_null(swoole_mysql_ce_ptr, ZEND_STRL("serverInfo"), ZEND_ACC_PUBLIC);
zend_declare_property_long(swoole_mysql_ce_ptr, ZEND_STRL("sock"), -1, ZEND_ACC_PUBLIC);
zend_declare_property_bool(swoole_mysql_ce_ptr, ZEND_STRL("connected"), 0, ZEND_ACC_PUBLIC);
zend_declare_property_long(swoole_mysql_ce_ptr, ZEND_STRL("errno"), 0, ZEND_ACC_PUBLIC);
zend_declare_property_long(swoole_mysql_ce_ptr, ZEND_STRL("connect_errno"), 0, ZEND_ACC_PUBLIC);
zend_declare_property_null(swoole_mysql_ce_ptr, ZEND_STRL("error"), ZEND_ACC_PUBLIC);
zend_declare_property_null(swoole_mysql_ce_ptr, ZEND_STRL("connect_error"), ZEND_ACC_PUBLIC);
zend_declare_property_null(swoole_mysql_ce_ptr, ZEND_STRL("insert_id"), ZEND_ACC_PUBLIC);
zend_declare_property_null(swoole_mysql_ce_ptr, ZEND_STRL("affected_rows"), ZEND_ACC_PUBLIC);
/** event callback */
zend_declare_property_null(swoole_mysql_ce_ptr, ZEND_STRL("onConnect"), ZEND_ACC_PUBLIC);
zend_declare_property_null(swoole_mysql_ce_ptr, ZEND_STRL("onClose"), ZEND_ACC_PUBLIC);
zend_declare_class_constant_long(swoole_mysql_ce_ptr, ZEND_STRL("STATE_QUERY"), SW_MYSQL_STATE_QUERY);
zend_declare_class_constant_long(swoole_mysql_ce_ptr, ZEND_STRL("STATE_READ_START"), SW_MYSQL_STATE_READ_START);
zend_declare_class_constant_long(swoole_mysql_ce_ptr, ZEND_STRL("STATE_READ_FIELD "), SW_MYSQL_STATE_READ_FIELD);
zend_declare_class_constant_long(swoole_mysql_ce_ptr, ZEND_STRL("STATE_READ_ROW"), SW_MYSQL_STATE_READ_ROW);
zend_declare_class_constant_long(swoole_mysql_ce_ptr, ZEND_STRL("STATE_READ_END"), SW_MYSQL_STATE_READ_END);
zend_declare_class_constant_long(swoole_mysql_ce_ptr, ZEND_STRL("STATE_CLOSED"), SW_MYSQL_STATE_CLOSED);
mysql_request_buffer = swString_new(SW_BUFFER_SIZE_STD);
}
int mysql_request_pack(swString *sql, swString *buffer)
{
swString_clear(buffer);
bzero(buffer->str, 5);
//length
mysql_pack_length(sql->length + 1, buffer->str);
//command
buffer->str[4] = SW_MYSQL_COM_QUERY;
buffer->length = 5;
return swString_append(buffer, sql);
}
int mysql_prepare_pack(swString *sql, swString *buffer)
{
swString_clear(buffer);
bzero(buffer->str, 5);
//length
mysql_pack_length(sql->length + 1, buffer->str);
//command
buffer->str[4] = SW_MYSQL_COM_STMT_PREPARE;
buffer->length = 5;
return swString_append(buffer, sql);
}
int mysql_get_result(mysql_connector *connector, char *buf, int len)
{
char *tmp = buf;
uint32_t packet_length = mysql_uint3korr(tmp);
if (len < SW_MYSQL_PACKET_HEADER_SIZE + packet_length)
{
return 0;
}
//int packet_number = tmp[3];
tmp += SW_MYSQL_PACKET_HEADER_SIZE;
uint8_t opcode = *tmp;
tmp += 1;
//ERROR Packet
if (opcode == SW_MYSQL_PACKET_ERR)
{
swMysqlPacketDump(tmp - 5, SW_MYSQL_PACKET_HEADER_SIZE + packet_length, "Handshake ERR_Packet");
connector->error_code = *(uint16_t *) tmp;
connector->error_msg = tmp + 2;
connector->error_length = packet_length - 3;
return -1;
}
else
{
swMysqlPacketDump(tmp - 5, SW_MYSQL_PACKET_HEADER_SIZE + packet_length, "Handshake OK_Packet");
return 1;
}
}
static void php_swoole_sha256(const char *str, int _len, unsigned char *digest)
{
PHP_SHA256_CTX context;
PHP_SHA256Init(&context);
PHP_SHA256Update(&context, (unsigned char *) str, _len);
PHP_SHA256Final(digest, &context);
}
//sha256
static void mysql_sha2_password_with_nonce(char* ret, char* nonce, char* password, size_t password_len)
{
// XOR(SHA256(password), SHA256(SHA256(SHA256(password)), nonce))
char hashed[32], double_hashed[32];
php_swoole_sha256(password, password_len, (unsigned char *) hashed);
php_swoole_sha256(hashed, 32, (unsigned char *) double_hashed);
char combined[32 + SW_MYSQL_NONCE_LENGTH]; //double-hashed + nonce
memcpy(combined, double_hashed, 32);
memcpy(combined + 32, nonce, SW_MYSQL_NONCE_LENGTH);
char xor_bytes[32];
php_swoole_sha256(combined, 32 + SW_MYSQL_NONCE_LENGTH, (unsigned char *) xor_bytes);
int i;
for (i = 0; i < 32; i++)
{
hashed[i] ^= xor_bytes[i];
}
memcpy(ret, hashed, 32);
}
/**
* Return: password length
*/
static int mysql_auth_encrypt_dispatch(char *buf, char *auth_plugin_name, char *password, size_t password_len, char* nonce, int *next_state)
{
if (!auth_plugin_name || strcasecmp("mysql_native_password", auth_plugin_name) == 0)
{
// mysql_native_password is default
// auth-response
char hash_0[20];
bzero(hash_0, sizeof (hash_0));
php_swoole_sha1(password, password_len, (uchar *) hash_0);
char hash_1[20];
bzero(hash_1, sizeof (hash_1));
php_swoole_sha1(hash_0, sizeof (hash_0), (uchar *) hash_1);
char str[40];
memcpy(str, nonce, 20);
memcpy(str + 20, hash_1, 20);
char hash_2[20];
php_swoole_sha1(str, sizeof (str), (uchar *) hash_2);
char hash_3[20];
int *a = (int *) hash_2;
int *b = (int *) hash_0;
int *c = (int *) hash_3;
int i;
for (i = 0; i < 5; i++)
{
c[i] = a[i] ^ b[i];
}
memcpy(buf, hash_3, 20);
return 20;
}
else if (strcasecmp("caching_sha2_password", auth_plugin_name) == 0)
{
char hashed[32];
mysql_sha2_password_with_nonce(
(char *) hashed,
(char *) nonce,
password,
password_len
);
// copy hashed data to connector buf
memcpy(buf, (char *) hashed, 32);
*next_state = SW_MYSQL_HANDSHAKE_WAIT_SIGNATURE;
return 32;
}
else
{
// unknown
swWarn("Unknown auth plugin: %s", auth_plugin_name);
return 0;
}
}
/**
1 [0a] protocol version
string[NUL] server version
4 connection id
string[8] auth-plugin-data-part-1
1 [00] filler
2 capability flags (lower 2 bytes)
if more data in the packet:
1 character set
2 status flags
2 capability flags (upper 2 bytes)
if capabilities & CLIENT_PLUGIN_AUTH {
1 length of auth-plugin-data
} else {
1 [00]
}
string[10] reserved (all [00])
if capabilities & CLIENT_SECURE_CONNECTION {
string[$len] auth-plugin-data-part-2 ($len=MAX(13, length of auth-plugin-data - 8))
if capabilities & CLIENT_PLUGIN_AUTH {
string[NUL] auth-plugin name
}
*/
int mysql_handshake(mysql_connector *connector, char *buf, int len)
{
char *tmp = buf;
int next_state = SW_MYSQL_HANDSHAKE_WAIT_RESULT; // ret is the next handshake state
/**
* handshake request
*/
mysql_handshake_request request;
bzero(&request, sizeof(request));
request.packet_length = mysql_uint3korr(tmp);
//continue to wait for data
if (len < SW_MYSQL_PACKET_HEADER_SIZE + request.packet_length)
{
return 0;
}
swMysqlPacketDump(tmp, SW_MYSQL_PACKET_HEADER_SIZE + request.packet_length, "Protocol::HandshakeV10");
request.packet_number = tmp[3];
tmp += SW_MYSQL_PACKET_HEADER_SIZE;
request.protocol_version = *tmp;
tmp += 1;
//ERROR Packet
if (request.protocol_version == SW_MYSQL_PACKET_ERR)
{
connector->error_code = *(uint16_t *) tmp;
connector->error_msg = tmp + 2;
connector->error_length = request.packet_length - 3;
return -1;
}
//1 [0a] protocol version
request.server_version = tmp;
tmp += (strlen(request.server_version) + 1);
//4 connection id
request.connection_id = *((int *) tmp);
tmp += 4;
//string[8] auth-plugin-data-part-1
memcpy(request.auth_plugin_data, tmp, 8);
tmp += 8;
//1 [00] filler
request.filler = *tmp;
tmp += 1;
//2 capability flags (lower 2 bytes)
memcpy(((char *) (&request.capability_flags)), tmp, 2);
tmp += 2;
if (tmp - tmp < len)
{
//1 character set
request.character_set = *tmp;
tmp += 1;
//2 status flags
memcpy(&request.status_flags, tmp, 2);
tmp += 2;
//2 capability flags (upper 2 bytes)
memcpy(((char *) (&request.capability_flags) + 2), tmp, 2);
tmp += 2;
request.l_auth_plugin_data = *tmp;
tmp += 1;
memcpy(&request.reserved, tmp, sizeof(request.reserved));
tmp += sizeof(request.reserved);
if (request.capability_flags & SW_MYSQL_CLIENT_SECURE_CONNECTION)
{
int len = MAX(13, request.l_auth_plugin_data - 8);
memcpy(request.auth_plugin_data + 8, tmp, len);
#ifdef SW_MYSQL_RSA_SUPPORT
memcpy(connector->auth_plugin_data, request.auth_plugin_data, SW_MYSQL_NONCE_LENGTH);
#endif
tmp += len;
}
if (request.capability_flags & SW_MYSQL_CLIENT_PLUGIN_AUTH)
{
request.auth_plugin_name = tmp;
request.l_auth_plugin_name = MIN(strlen(tmp), len - (tmp - buf));
swTraceLog(SW_TRACE_MYSQL_CLIENT, "use %s auth plugin", request.auth_plugin_name);
}
}
int value;
tmp = connector->buf + 4;
//capability flags, CLIENT_PROTOCOL_41 always set
value = SW_MYSQL_CLIENT_LONG_PASSWORD | SW_MYSQL_CLIENT_PROTOCOL_41 | SW_MYSQL_CLIENT_SECURE_CONNECTION
| SW_MYSQL_CLIENT_CONNECT_WITH_DB | SW_MYSQL_CLIENT_PLUGIN_AUTH | SW_MYSQL_CLIENT_MULTI_RESULTS;
memcpy(tmp, &value, sizeof(value));
tmp += 4;
swTraceLog(SW_TRACE_MYSQL_CLIENT, "Server protocol=%d, version=%s, capabilites=0x%08x, status=%u, Client capabilites=0x%08x",
request.protocol_version, request.server_version, request.capability_flags, request.status_flags, value);
//max-packet size
value = 300;
memcpy(tmp, &value, sizeof(value));
tmp += 4;
//use the server character_set when the character_set is not set.
if (connector->character_set == 0)
{
connector->character_set = request.character_set;
}
//character set
*tmp = connector->character_set;
tmp += 1;
//string[23] reserved (all [0])
tmp += 23;
//string[NUL] username
memcpy(tmp, connector->user, connector->user_len);
tmp[connector->user_len] = '\0';
tmp += (connector->user_len + 1);
if (connector->password_len > 0)
{
int length = 0;
length = mysql_auth_encrypt_dispatch(
tmp + 1,
request.auth_plugin_name,
connector->password,
connector->password_len,
request.auth_plugin_data,
&next_state
);
*tmp = length;
tmp += length + 1;
}
else
{
*tmp = 0;
tmp++;
}
//string[NUL] database
memcpy(tmp, connector->database, connector->database_len);
tmp[connector->database_len] = '\0';
tmp += (connector->database_len + 1);
//string[NUL] auth plugin name
memcpy(tmp, request.auth_plugin_name, request.l_auth_plugin_name);
tmp[request.l_auth_plugin_name] = '\0';
tmp += (request.l_auth_plugin_name + 1);
connector->packet_length = tmp - connector->buf - 4;
mysql_pack_length(connector->packet_length, connector->buf);
connector->buf[3] = 1;
swMysqlPacketDump(connector->buf, SW_MYSQL_PACKET_HEADER_SIZE + connector->packet_length, "Protocol::HandshakeResponse41");
return next_state;
}
// we may need it one day but now
// we can reply the every auth plugin requirement on the first handshake
int mysql_auth_switch(mysql_connector *connector, char *buf, int len)
{
char *tmp = buf;
if ((uint8_t) tmp[4] != SW_MYSQL_PACKET_EOF)
{
// out of the order packet
return SW_ERR;
}
int next_state = SW_MYSQL_HANDSHAKE_WAIT_RESULT;
uint32_t packet_length = mysql_uint3korr(tmp);
//continue to wait for data
if (len < SW_MYSQL_PACKET_HEADER_SIZE + packet_length)
{
return SW_AGAIN;
}
int packet_number = tmp[3];
tmp += SW_MYSQL_PACKET_HEADER_SIZE;
// type
tmp += 1;
// clear
connector->packet_length = 0;
memset(connector->buf, 0, 512);
// string[NUL] plugin name
char auth_plugin_name[32];
int auth_plugin_name_len = 0;
int i;
for (i = 0; i < packet_length; i++)
{
auth_plugin_name[auth_plugin_name_len] = tmp[auth_plugin_name_len];
auth_plugin_name_len++;
if (tmp[auth_plugin_name_len] == 0x00)
{
break;
}
}
auth_plugin_name[auth_plugin_name_len] = '\0';
swTraceLog(SW_TRACE_MYSQL_CLIENT, "auth switch plugin name=%s", auth_plugin_name);
tmp += auth_plugin_name_len + 1; // name + 0x00
// if auth switch is triggered, password can't be empty
// string auth plugin data
char auth_plugin_data[20];
memcpy((char *)auth_plugin_data, tmp, 20);
// create auth switch response packet
connector->packet_length += mysql_auth_encrypt_dispatch(
(char *) (connector->buf + 4),
auth_plugin_name,
connector->password,
connector->password_len,
auth_plugin_data,
&next_state
);
// 3 for packet length
mysql_pack_length(connector->packet_length, connector->buf);
// 1 packet num
connector->buf[3] = packet_number + 1;
return next_state;
}
int mysql_parse_auth_signature(swString *buffer, mysql_connector *connector)
{
char *tmp = buffer->str;
uint32_t packet_length = mysql_uint3korr(tmp);
//continue to wait for data
if (buffer->length < SW_MYSQL_PACKET_HEADER_SIZE + packet_length)
{
return SW_AGAIN;
}
swMysqlPacketDump(tmp, SW_MYSQL_PACKET_HEADER_SIZE + packet_length, "Auth");
int packet_number = tmp[3];
tmp += SW_MYSQL_PACKET_HEADER_SIZE;
// signature
if ((uint8_t) tmp[0] != SW_MYSQL_AUTH_SIGNATURE)
{
return SW_MYSQL_AUTH_SIGNATURE_ERROR;
}
// remaining length
buffer->offset = SW_MYSQL_PACKET_HEADER_SIZE + packet_length;
swTraceLog(SW_TRACE_MYSQL_CLIENT, "before signature remaining=%ju", (uintmax_t) (buffer->length - buffer->offset));
if ((uint8_t)tmp[1] == SW_MYSQL_AUTH_SIGNATURE_FULL_AUTH_REQUIRED)
{
// create RSA prepared response
connector->packet_length = 1;
memset(connector->buf, 0, 512);
// 3 for packet length
mysql_pack_length(connector->packet_length, connector->buf);
// 1 packet number
connector->buf[3] = packet_number + 1;
// as I am OK
connector->buf[4] = SW_MYSQL_AUTH_SIGNATURE_RSA_PREPARED;
}
// signature value
return tmp[1];
}
#ifdef SW_MYSQL_RSA_SUPPORT
// Caching sha2 authentication. Public key request and send encrypted password
// http://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::AuthSwitchResponse
int mysql_parse_rsa(mysql_connector *connector, char *buf, int len)
{
// clear
connector->packet_length = 0;
memset(connector->buf, 0, 512);
char *tmp = buf;
uint32_t packet_length = mysql_uint3korr(tmp);
//continue to wait for data
if (len < SW_MYSQL_PACKET_HEADER_SIZE + packet_length)
{
return SW_AGAIN;
}
int packet_number = tmp[3];
tmp += SW_MYSQL_PACKET_HEADER_SIZE;
int rsa_public_key_length = packet_length;
while (tmp[0] != 0x2d)
{
tmp++; // ltrim
rsa_public_key_length--;
}
char rsa_public_key[rsa_public_key_length + 1]; //rsa + '\0'
memcpy((char *)rsa_public_key, tmp, rsa_public_key_length);
rsa_public_key[rsa_public_key_length] = '\0';
swTraceLog(SW_TRACE_MYSQL_CLIENT, "rsa-length=%d;\nrsa-key=[%.*s]", rsa_public_key_length, rsa_public_key_length, rsa_public_key);
int password_len = connector->password_len + 1;
unsigned char password[password_len];
// copy to stack
memcpy((char *)password, connector->password, password_len);
// add NUL terminator to password
password[password_len - 1] = '\0';
// XOR the password bytes with the challenge
int i;
for (i = 0; i < password_len; i++)
{
password[i] ^= connector->auth_plugin_data[i % SW_MYSQL_NONCE_LENGTH];
}
// prepare RSA public key
BIO *bio = NULL;
RSA *public_rsa = NULL;
if (unlikely((bio = BIO_new_mem_buf((void *)rsa_public_key, -1)) == NULL))
{
swWarn("BIO_new_mem_buf publicKey error!");
return SW_ERR;
}
// PEM_read_bio_RSA_PUBKEY
ERR_clear_error();
if (unlikely((public_rsa = PEM_read_bio_RSA_PUBKEY(bio, NULL, NULL, NULL)) == NULL))
{
ERR_load_crypto_strings();
char err_buf[512];
ERR_error_string_n(ERR_get_error(), err_buf, sizeof(err_buf));
swWarn("[PEM_read_bio_RSA_PUBKEY ERROR]: %s", err_buf);
return SW_ERR;
}
BIO_free_all(bio);
// encrypt with RSA public key
int rsa_len = RSA_size(public_rsa);
unsigned char encrypt_msg[rsa_len];
// RSA_public_encrypt
ERR_clear_error();
int flen = rsa_len - 42;
flen = password_len > flen ? flen : password_len;
swTraceLog(SW_TRACE_MYSQL_CLIENT, "rsa_len=%d", rsa_len);
if (unlikely(RSA_public_encrypt(flen, (const unsigned char *)password, (unsigned char *)encrypt_msg, public_rsa, RSA_PKCS1_OAEP_PADDING) < 0))
{
ERR_load_crypto_strings();
char err_buf[512];
ERR_error_string_n(ERR_get_error(), err_buf, sizeof(err_buf));
swWarn("[RSA_public_encrypt ERROR]: %s", err_buf);
return SW_ERR;
}
RSA_free(public_rsa);
memcpy((char *)connector->buf + 4, (char *)encrypt_msg, rsa_len); // copy rsa to buf
connector->packet_length = rsa_len;
// 3 for packet length
mysql_pack_length(connector->packet_length, connector->buf);
// 1 packet number
connector->buf[3] = packet_number + 1;
return SW_OK;
}
#endif
static int mysql_parse_prepare_result(mysql_client *client, char *buf, size_t n_buf)
{
// not COM_STMT_PREPARE_OK packet
if ((uint8_t) buf[4] != SW_MYSQL_PACKET_OK || client->cmd != SW_MYSQL_COM_STMT_PREPARE || client->response.packet_length < 12)
{
return SW_ERR;
}
swMysqlPacketDump(buf, SW_MYSQL_PACKET_HEADER_SIZE + client->response.packet_length, "COM_STMT_PREPARE_OK_Packet");
// skip the packet header
buf += SW_MYSQL_PACKET_HEADER_SIZE;
mysql_statement *stmt = emalloc(sizeof(mysql_statement));
// status (1) -- [00] OK
buf += 1;
// statement_id (4) -- statement-id
stmt->id = mysql_uint4korr(buf);
buf += 4;
// num_columns (2) -- number of columns
stmt->field_count = mysql_uint2korr(buf);
buf += 2;
// num_params (2) -- number of params
stmt->unreaded_param_count = stmt->param_count = mysql_uint2korr(buf);
buf += 2;
// reserved_1 (1) -- [00] filler
buf += 1;
// warning_count (2) -- number of warnings
stmt->warning_count = mysql_uint2korr(buf);
stmt->result = NULL;
stmt->buffer = NULL;
client->statement = stmt;
stmt->client = client;
MYSQL_RESPONSE_BUFFER->offset += SW_MYSQL_PACKET_HEADER_SIZE + client->response.packet_length;
swTraceLog(SW_TRACE_MYSQL_CLIENT, "stmt_id=%u, field_count=%u, param_count=%u, warning_count=%u.", stmt->id,
stmt->field_count, stmt->param_count, stmt->warning_count);
return SW_OK;
}
static zend_string* mysql_decode_big_data(mysql_big_data_info *mbdi)
{
// through ext_packet_num to calc read_n += ?
mbdi->ext_header_len = SW_MYSQL_PACKET_HEADER_SIZE * (((mbdi->len - mbdi->currrent_packet_remaining_size) / SW_MYSQL_MAX_PACKET_BODY_SIZE) + 1);
if (mbdi->ext_header_len + mbdi->len > mbdi->remaining_size)
{
swTraceLog(SW_TRACE_MYSQL_CLIENT, "big packet need %lu, but only %lu", mbdi->ext_header_len + mbdi->len, mbdi->remaining_size);
return NULL;
}
else
{
// optimization: allocate a complete piece of memory at once
zend_string* zstring = zend_string_alloc(mbdi->len, 0);;
size_t write_s = 0, write_n = 0;
char *read_p, *write_p;
read_p = mbdi->read_p;
write_p = ZSTR_VAL(zstring);
// copy the remaining data of the current packet
write_s = mbdi->currrent_packet_remaining_size;
memcpy(write_p, read_p, write_s);
read_p += write_s;
write_p += write_s;
write_n += write_s;
while (write_n < mbdi->len) // copy the next... packet
{
uint32_t _packet_len = mysql_uint3korr(read_p);
mbdi->ext_packet_len += _packet_len;
write_s = MIN(_packet_len, mbdi->len - write_n);
memcpy(write_p, read_p + SW_MYSQL_PACKET_HEADER_SIZE, write_s);
read_p += SW_MYSQL_PACKET_HEADER_SIZE + write_s;
write_p += write_s;
write_n += write_s;
}
ZSTR_VAL(zstring)[mbdi->len] = '\0';
SW_ASSERT(ZSTR_VAL(zstring) + mbdi->len == write_p);
return zstring;
}
}
static ssize_t mysql_decode_row(mysql_client *client, char *buf, uint32_t packet_length, size_t n_buf)
{
int i;
int tmp_len;
ulong_t len;
char nul;
mysql_row row;
char value_buffer[32];
char *error;
ssize_t read_n = 0;
zend_string *zstring = NULL;
zval *result_array = client->response.result_array;
zval *row_array = sw_malloc_zval();
bzero(&row, sizeof(row));
array_init(row_array);
swTraceLog(SW_TRACE_MYSQL_CLIENT, "mysql_decode_row begin, num_column=%ld, packet_length=%u.", client->response.num_column, packet_length);
mysql_field *field = NULL;
for (i = 0; i < client->response.num_column; i++)
{
tmp_len = mysql_length_coded_binary(&buf[read_n], &len, &nul, packet_length - read_n);
if (tmp_len == -1)
{
swWarn("mysql response parse error: bad lcb, tmp_len=%d", tmp_len);
read_n = -SW_MYSQL_ERR_BAD_LCB;
goto _error;
}
read_n += tmp_len;
// WARNING: data may be longer than single packet (0x00fffff => 16M)
if (unlikely(len > packet_length - read_n))
{
mysql_big_data_info mbdi = { len, n_buf - read_n, packet_length - read_n, buf + read_n, 0, 0 };
if ((zstring = mysql_decode_big_data(&mbdi)))
{
read_n += mbdi.ext_header_len;
packet_length += mbdi.ext_header_len + mbdi.ext_packet_len;
}
else
{
read_n = SW_AGAIN;
goto _error;
}
}
field = &client->response.columns[i];
if (nul == 1)
{
swTraceLog(SW_TRACE_MYSQL_CLIENT, "column#%d: name=%.*s, type=null", i, field->name_length, field->name);
add_assoc_null(row_array, field->name);
continue;
}
swTraceLog(SW_TRACE_MYSQL_CLIENT, "column#%d: name=%.*s, type=%d, value=%.*s, len=%lu", i, field->name_length, field->name, field->type, (int) len, buf + read_n, len);
switch (field->type)
{
case SW_MYSQL_TYPE_NULL:
add_assoc_null(row_array, field->name);
break;
/* String */
case SW_MYSQL_TYPE_TINY_BLOB:
case SW_MYSQL_TYPE_MEDIUM_BLOB:
case SW_MYSQL_TYPE_LONG_BLOB:
case SW_MYSQL_TYPE_BLOB:
case SW_MYSQL_TYPE_DECIMAL:
case SW_MYSQL_TYPE_NEWDECIMAL:
case SW_MYSQL_TYPE_BIT:
case SW_MYSQL_TYPE_STRING:
case SW_MYSQL_TYPE_VAR_STRING:
case SW_MYSQL_TYPE_VARCHAR:
case SW_MYSQL_TYPE_NEWDATE:
/* Date Time */
case SW_MYSQL_TYPE_TIME:
case SW_MYSQL_TYPE_YEAR:
case SW_MYSQL_TYPE_TIMESTAMP:
case SW_MYSQL_TYPE_DATETIME:
case SW_MYSQL_TYPE_DATE:
case SW_MYSQL_TYPE_JSON:
if (unlikely(zstring))
{
zval _zdata, *zdata = &_zdata;
ZVAL_STR(zdata, zstring);
add_assoc_zval(row_array, field->name, zdata);
zstring = NULL;
}
else
{
add_assoc_stringl(row_array, field->name, buf + read_n, len);
}
break;
/* Integer */
case SW_MYSQL_TYPE_TINY:
case SW_MYSQL_TYPE_SHORT:
case SW_MYSQL_TYPE_INT24:
case SW_MYSQL_TYPE_LONG:
if(client->connector.strict_type)
{
memcpy(value_buffer, buf + read_n, len);
value_buffer[len] = 0;
if (field->flags & SW_MYSQL_UNSIGNED_FLAG)
{
row.uint = strtoul(value_buffer, &error, 10);
if (*error != '\0')
{
read_n = -SW_MYSQL_ERR_CONVLONG;
goto _error;
}
add_assoc_long(row_array, field->name, row.uint);
}
else
{
row.sint = strtol(value_buffer, &error, 10);
if (*error != '\0')
{
read_n = -SW_MYSQL_ERR_CONVLONG;
goto _error;
}
add_assoc_long(row_array, field->name, row.sint);
}
}
else
{
add_assoc_stringl(row_array, field->name, buf + read_n, len);
}
break;
case SW_MYSQL_TYPE_LONGLONG:
if(client->connector.strict_type) {
memcpy(value_buffer, buf + read_n, len);
value_buffer[len] = 0;
if (field->flags & SW_MYSQL_UNSIGNED_FLAG)
{
row.ubigint = strtoull(value_buffer, &error, 10);
if (*error != '\0') {
read_n = -SW_MYSQL_ERR_CONVLONGLONG;
goto _error;
}
if (unlikely(row.ubigint > ZEND_LONG_MAX))
{
goto _longlongstring;
}
add_assoc_long(row_array, field->name, row.ubigint);
}
else
{
row.sbigint = strtoll(value_buffer, &error, 10);
if (*error != '\0') {