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mysqlnd.c
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/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 2006-2015 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 |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andrey Hristov <[email protected]> |
| Ulf Wendel <[email protected]> |
| Georg Richter <[email protected]> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "php.h"
#include "mysqlnd.h"
#include "mysqlnd_wireprotocol.h"
#include "mysqlnd_priv.h"
#include "mysqlnd_result.h"
#include "mysqlnd_statistics.h"
#include "mysqlnd_charset.h"
#include "mysqlnd_debug.h"
#include "zend_smart_str.h"
/*
TODO :
- Don't bind so tightly the metadata with the result set. This means
that the metadata reading should not expect a MYSQLND_RES pointer, it
does not need it, but return a pointer to the metadata (MYSQLND_FIELD *).
For normal statements we will then just assign it to a member of
MYSQLND_RES. For PS statements, it will stay as part of the statement
(MYSQLND_STMT) between prepare and execute. At execute the new metadata
will be sent by the server, so we will discard the old one and then
finally attach it to the result set. This will make the code more clean,
as a prepared statement won't have anymore stmt->result != NULL, as it
is now, just to have where to store the metadata.
- Change mysqlnd_simple_command to accept a heap dynamic array of MYSQLND_STRING
terminated by a string with ptr being NULL. Thus, multi-part messages can be
sent to the network like writev() and this can save at least for
mysqlnd_stmt_send_long_data() new malloc. This change will probably make the
code in few other places cleaner.
*/
extern MYSQLND_CHARSET *mysqlnd_charsets;
PHPAPI 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";
PHPAPI const char * const mysqlnd_server_gone = "MySQL server has gone away";
PHPAPI const char * const mysqlnd_out_of_sync = "Commands out of sync; you can't run this command now";
PHPAPI const char * const mysqlnd_out_of_memory = "Out of memory";
PHPAPI MYSQLND_STATS *mysqlnd_global_stats = NULL;
/* {{{ mysqlnd_conn_data::free_options */
static void
MYSQLND_METHOD(mysqlnd_conn_data, free_options)(MYSQLND_CONN_DATA * conn)
{
zend_bool pers = conn->persistent;
if (conn->options->charset_name) {
mnd_pefree(conn->options->charset_name, pers);
conn->options->charset_name = NULL;
}
if (conn->options->auth_protocol) {
mnd_pefree(conn->options->auth_protocol, pers);
conn->options->auth_protocol = NULL;
}
if (conn->options->num_commands) {
unsigned int i;
for (i = 0; i < conn->options->num_commands; i++) {
/* allocated with pestrdup */
mnd_pefree(conn->options->init_commands[i], pers);
}
mnd_pefree(conn->options->init_commands, pers);
conn->options->init_commands = NULL;
}
if (conn->options->cfg_file) {
mnd_pefree(conn->options->cfg_file, pers);
conn->options->cfg_file = NULL;
}
if (conn->options->cfg_section) {
mnd_pefree(conn->options->cfg_section, pers);
conn->options->cfg_section = NULL;
}
if (conn->options->connect_attr) {
zend_hash_destroy(conn->options->connect_attr);
mnd_pefree(conn->options->connect_attr, pers);
conn->options->connect_attr = NULL;
}
}
/* }}} */
/* {{{ mysqlnd_conn_data::free_contents */
static void
MYSQLND_METHOD(mysqlnd_conn_data, free_contents)(MYSQLND_CONN_DATA * conn)
{
zend_bool pers = conn->persistent;
DBG_ENTER("mysqlnd_conn_data::free_contents");
if (conn->current_result) {
conn->current_result->m.free_result(conn->current_result, TRUE);
conn->current_result = NULL;
}
if (conn->net) {
conn->net->data->m.free_contents(conn->net);
}
DBG_INF("Freeing memory of members");
if (conn->host) {
mnd_pefree(conn->host, pers);
conn->host = NULL;
}
if (conn->user) {
mnd_pefree(conn->user, pers);
conn->user = NULL;
}
if (conn->passwd) {
mnd_pefree(conn->passwd, pers);
conn->passwd = NULL;
}
if (conn->connect_or_select_db) {
mnd_pefree(conn->connect_or_select_db, pers);
conn->connect_or_select_db = NULL;
}
if (conn->unix_socket) {
mnd_pefree(conn->unix_socket, pers);
conn->unix_socket = NULL;
}
DBG_INF_FMT("scheme=%s", conn->scheme);
if (conn->scheme) {
mnd_pefree(conn->scheme, pers);
conn->scheme = NULL;
}
if (conn->server_version) {
mnd_pefree(conn->server_version, pers);
conn->server_version = NULL;
}
if (conn->host_info) {
mnd_pefree(conn->host_info, pers);
conn->host_info = NULL;
}
if (conn->auth_plugin_data) {
mnd_pefree(conn->auth_plugin_data, pers);
conn->auth_plugin_data = NULL;
}
if (conn->last_message) {
mnd_pefree(conn->last_message, pers);
conn->last_message = NULL;
}
if (conn->error_info->error_list) {
zend_llist_clean(conn->error_info->error_list);
mnd_pefree(conn->error_info->error_list, pers);
conn->error_info->error_list = NULL;
}
conn->charset = NULL;
conn->greet_charset = NULL;
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_conn_data::dtor */
static void
MYSQLND_METHOD_PRIVATE(mysqlnd_conn_data, dtor)(MYSQLND_CONN_DATA * conn)
{
DBG_ENTER("mysqlnd_conn_data::dtor");
DBG_INF_FMT("conn=%llu", conn->thread_id);
conn->m->free_contents(conn);
conn->m->free_options(conn);
if (conn->net) {
mysqlnd_net_free(conn->net, conn->stats, conn->error_info);
conn->net = NULL;
}
if (conn->protocol) {
mysqlnd_protocol_free(conn->protocol);
conn->protocol = NULL;
}
if (conn->stats) {
mysqlnd_stats_end(conn->stats);
}
mnd_pefree(conn, conn->persistent);
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_conn_data::simple_command_handle_response */
static enum_func_status
MYSQLND_METHOD(mysqlnd_conn_data, simple_command_handle_response)(MYSQLND_CONN_DATA * conn, enum mysqlnd_packet_type ok_packet,
zend_bool silent, enum php_mysqlnd_server_command command,
zend_bool ignore_upsert_status)
{
enum_func_status ret = FAIL;
DBG_ENTER("mysqlnd_conn_data::simple_command_handle_response");
DBG_INF_FMT("silent=%u packet=%u command=%s", silent, ok_packet, mysqlnd_command_to_text[command]);
switch (ok_packet) {
case PROT_OK_PACKET:{
MYSQLND_PACKET_OK * ok_response = conn->protocol->m.get_ok_packet(conn->protocol, FALSE);
if (!ok_response) {
SET_OOM_ERROR(*conn->error_info);
break;
}
if (FAIL == (ret = PACKET_READ(ok_response, conn))) {
if (!silent) {
DBG_ERR_FMT("Error while reading %s's OK packet", mysqlnd_command_to_text[command]);
php_error_docref(NULL, E_WARNING, "Error while reading %s's OK packet. PID=%u",
mysqlnd_command_to_text[command], getpid());
}
} else {
DBG_INF_FMT("OK from server");
if (0xFF == ok_response->field_count) {
/* The server signalled error. Set the error */
SET_CLIENT_ERROR(*conn->error_info, ok_response->error_no, ok_response->sqlstate, ok_response->error);
ret = FAIL;
/*
Cover a protocol design error: error packet does not
contain the server status. Therefore, the client has no way
to find out whether there are more result sets of
a multiple-result-set statement pending. Luckily, in 5.0 an
error always aborts execution of a statement, wherever it is
a multi-statement or a stored procedure, so it should be
safe to unconditionally turn off the flag here.
*/
conn->upsert_status->server_status &= ~SERVER_MORE_RESULTS_EXISTS;
SET_ERROR_AFF_ROWS(conn);
} else {
SET_NEW_MESSAGE(conn->last_message, conn->last_message_len,
ok_response->message, ok_response->message_len,
conn->persistent);
if (!ignore_upsert_status) {
memset(conn->upsert_status, 0, sizeof(*conn->upsert_status));
conn->upsert_status->warning_count = ok_response->warning_count;
conn->upsert_status->server_status = ok_response->server_status;
conn->upsert_status->affected_rows = ok_response->affected_rows;
conn->upsert_status->last_insert_id = ok_response->last_insert_id;
}
}
}
PACKET_FREE(ok_response);
break;
}
case PROT_EOF_PACKET:{
MYSQLND_PACKET_EOF * ok_response = conn->protocol->m.get_eof_packet(conn->protocol, FALSE);
if (!ok_response) {
SET_OOM_ERROR(*conn->error_info);
break;
}
if (FAIL == (ret = PACKET_READ(ok_response, conn))) {
SET_CLIENT_ERROR(*conn->error_info, CR_MALFORMED_PACKET, UNKNOWN_SQLSTATE,
"Malformed packet");
if (!silent) {
DBG_ERR_FMT("Error while reading %s's EOF packet", mysqlnd_command_to_text[command]);
php_error_docref(NULL, E_WARNING, "Error while reading %s's EOF packet. PID=%d",
mysqlnd_command_to_text[command], getpid());
}
} else if (0xFF == ok_response->field_count) {
/* The server signalled error. Set the error */
SET_CLIENT_ERROR(*conn->error_info, ok_response->error_no, ok_response->sqlstate, ok_response->error);
SET_ERROR_AFF_ROWS(conn);
} else if (0xFE != ok_response->field_count) {
SET_CLIENT_ERROR(*conn->error_info, CR_MALFORMED_PACKET, UNKNOWN_SQLSTATE, "Malformed packet");
if (!silent) {
DBG_ERR_FMT("EOF packet expected, field count wasn't 0xFE but 0x%2X", ok_response->field_count);
php_error_docref(NULL, E_WARNING, "EOF packet expected, field count wasn't 0xFE but 0x%2X",
ok_response->field_count);
}
} else {
DBG_INF_FMT("OK from server");
}
PACKET_FREE(ok_response);
break;
}
default:
SET_CLIENT_ERROR(*conn->error_info, CR_MALFORMED_PACKET, UNKNOWN_SQLSTATE, "Malformed packet");
php_error_docref(NULL, E_ERROR, "Wrong response packet %u passed to the function", ok_packet);
break;
}
DBG_INF(ret == PASS ? "PASS":"FAIL");
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_conn_data::simple_command_send_request */
static enum_func_status
MYSQLND_METHOD(mysqlnd_conn_data, simple_command_send_request)(MYSQLND_CONN_DATA * conn, enum php_mysqlnd_server_command command,
const zend_uchar * const arg, size_t arg_len, zend_bool silent, zend_bool ignore_upsert_status)
{
enum_func_status ret = PASS;
MYSQLND_PACKET_COMMAND * cmd_packet;
DBG_ENTER("mysqlnd_conn_data::simple_command_send_request");
DBG_INF_FMT("command=%s silent=%u", mysqlnd_command_to_text[command], silent);
DBG_INF_FMT("conn->server_status=%u", conn->upsert_status->server_status);
DBG_INF_FMT("sending %u bytes", arg_len + 1); /* + 1 is for the command */
switch (CONN_GET_STATE(conn)) {
case CONN_READY:
break;
case CONN_QUIT_SENT:
SET_CLIENT_ERROR(*conn->error_info, CR_SERVER_GONE_ERROR, UNKNOWN_SQLSTATE, mysqlnd_server_gone);
DBG_ERR("Server is gone");
DBG_RETURN(FAIL);
default:
SET_CLIENT_ERROR(*conn->error_info, CR_COMMANDS_OUT_OF_SYNC, UNKNOWN_SQLSTATE, mysqlnd_out_of_sync);
DBG_ERR_FMT("Command out of sync. State=%u", CONN_GET_STATE(conn));
DBG_RETURN(FAIL);
}
SET_ERROR_AFF_ROWS(conn);
SET_EMPTY_ERROR(*conn->error_info);
cmd_packet = conn->protocol->m.get_command_packet(conn->protocol, FALSE);
if (!cmd_packet) {
SET_OOM_ERROR(*conn->error_info);
DBG_RETURN(FAIL);
}
cmd_packet->command = command;
if (arg && arg_len) {
cmd_packet->argument = arg;
cmd_packet->arg_len = arg_len;
}
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_COM_QUIT + command - 1 /* because of COM_SLEEP */ );
if (! PACKET_WRITE(cmd_packet, conn)) {
if (!silent) {
DBG_ERR_FMT("Error while sending %s packet", mysqlnd_command_to_text[command]);
php_error(E_WARNING, "Error while sending %s packet. PID=%d", mysqlnd_command_to_text[command], getpid());
}
CONN_SET_STATE(conn, CONN_QUIT_SENT);
conn->m->send_close(conn);
DBG_ERR("Server is gone");
ret = FAIL;
}
PACKET_FREE(cmd_packet);
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_conn_data::simple_command */
static enum_func_status
MYSQLND_METHOD(mysqlnd_conn_data, simple_command)(MYSQLND_CONN_DATA * conn, enum php_mysqlnd_server_command command,
const zend_uchar * const arg, size_t arg_len, enum mysqlnd_packet_type ok_packet, zend_bool silent,
zend_bool ignore_upsert_status)
{
enum_func_status ret;
DBG_ENTER("mysqlnd_conn_data::simple_command");
ret = conn->m->simple_command_send_request(conn, command, arg, arg_len, silent, ignore_upsert_status);
if (PASS == ret && ok_packet != PROT_LAST) {
ret = conn->m->simple_command_handle_response(conn, ok_packet, silent, command, ignore_upsert_status);
}
DBG_INF(ret == PASS ? "PASS":"FAIL");
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_conn_data::set_server_option */
static enum_func_status
MYSQLND_METHOD(mysqlnd_conn_data, set_server_option)(MYSQLND_CONN_DATA * const conn, enum_mysqlnd_server_option option)
{
size_t this_func = STRUCT_OFFSET(struct st_mysqlnd_conn_data_methods, set_server_option);
zend_uchar buffer[2];
enum_func_status ret = FAIL;
DBG_ENTER("mysqlnd_conn_data::set_server_option");
if (PASS == conn->m->local_tx_start(conn, this_func)) {
int2store(buffer, (unsigned int) option);
ret = conn->m->simple_command(conn, COM_SET_OPTION, buffer, sizeof(buffer), PROT_EOF_PACKET, FALSE, TRUE);
conn->m->local_tx_end(conn, this_func, ret);
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_conn_data::restart_psession */
static enum_func_status
MYSQLND_METHOD(mysqlnd_conn_data, restart_psession)(MYSQLND_CONN_DATA * conn)
{
DBG_ENTER("mysqlnd_conn_data::restart_psession");
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_CONNECT_REUSED);
/* Free here what should not be seen by the next script */
if (conn->last_message) {
mnd_pefree(conn->last_message, conn->persistent);
conn->last_message = NULL;
}
DBG_RETURN(PASS);
}
/* }}} */
/* {{{ mysqlnd_conn_data::end_psession */
static enum_func_status
MYSQLND_METHOD(mysqlnd_conn_data, end_psession)(MYSQLND_CONN_DATA * conn)
{
DBG_ENTER("mysqlnd_conn_data::end_psession");
DBG_RETURN(PASS);
}
/* }}} */
/* {{{ mysqlnd_switch_to_ssl_if_needed */
static enum_func_status
mysqlnd_switch_to_ssl_if_needed(
MYSQLND_CONN_DATA * conn,
const MYSQLND_PACKET_GREET * const greet_packet,
const MYSQLND_OPTIONS * const options,
zend_ulong mysql_flags)
{
enum_func_status ret = FAIL;
const MYSQLND_CHARSET * charset;
MYSQLND_PACKET_AUTH * auth_packet;
DBG_ENTER("mysqlnd_switch_to_ssl_if_needed");
DBG_INF_FMT("client_capability_flags=%lu", mysql_flags);
DBG_INF_FMT("CLIENT_LONG_PASSWORD= %d", mysql_flags & CLIENT_LONG_PASSWORD? 1:0);
DBG_INF_FMT("CLIENT_FOUND_ROWS= %d", mysql_flags & CLIENT_FOUND_ROWS? 1:0);
DBG_INF_FMT("CLIENT_LONG_FLAG= %d", mysql_flags & CLIENT_LONG_FLAG? 1:0);
DBG_INF_FMT("CLIENT_NO_SCHEMA= %d", mysql_flags & CLIENT_NO_SCHEMA? 1:0);
DBG_INF_FMT("CLIENT_COMPRESS= %d", mysql_flags & CLIENT_COMPRESS? 1:0);
DBG_INF_FMT("CLIENT_ODBC= %d", mysql_flags & CLIENT_ODBC? 1:0);
DBG_INF_FMT("CLIENT_LOCAL_FILES= %d", mysql_flags & CLIENT_LOCAL_FILES? 1:0);
DBG_INF_FMT("CLIENT_IGNORE_SPACE= %d", mysql_flags & CLIENT_IGNORE_SPACE? 1:0);
DBG_INF_FMT("CLIENT_PROTOCOL_41= %d", mysql_flags & CLIENT_PROTOCOL_41? 1:0);
DBG_INF_FMT("CLIENT_INTERACTIVE= %d", mysql_flags & CLIENT_INTERACTIVE? 1:0);
DBG_INF_FMT("CLIENT_SSL= %d", mysql_flags & CLIENT_SSL? 1:0);
DBG_INF_FMT("CLIENT_IGNORE_SIGPIPE= %d", mysql_flags & CLIENT_IGNORE_SIGPIPE? 1:0);
DBG_INF_FMT("CLIENT_TRANSACTIONS= %d", mysql_flags & CLIENT_TRANSACTIONS? 1:0);
DBG_INF_FMT("CLIENT_RESERVED= %d", mysql_flags & CLIENT_RESERVED? 1:0);
DBG_INF_FMT("CLIENT_SECURE_CONNECTION=%d", mysql_flags & CLIENT_SECURE_CONNECTION? 1:0);
DBG_INF_FMT("CLIENT_MULTI_STATEMENTS=%d", mysql_flags & CLIENT_MULTI_STATEMENTS? 1:0);
DBG_INF_FMT("CLIENT_MULTI_RESULTS= %d", mysql_flags & CLIENT_MULTI_RESULTS? 1:0);
DBG_INF_FMT("CLIENT_PS_MULTI_RESULTS=%d", mysql_flags & CLIENT_PS_MULTI_RESULTS? 1:0);
DBG_INF_FMT("CLIENT_CONNECT_ATTRS= %d", mysql_flags & CLIENT_PLUGIN_AUTH? 1:0);
DBG_INF_FMT("CLIENT_PLUGIN_AUTH_LENENC_CLIENT_DATA= %d", mysql_flags & CLIENT_PLUGIN_AUTH_LENENC_CLIENT_DATA? 1:0);
DBG_INF_FMT("CLIENT_CAN_HANDLE_EXPIRED_PASSWORDS= %d", mysql_flags & CLIENT_CAN_HANDLE_EXPIRED_PASSWORDS? 1:0);
DBG_INF_FMT("CLIENT_SESSION_TRACK= %d", mysql_flags & CLIENT_SESSION_TRACK? 1:0);
DBG_INF_FMT("CLIENT_SSL_VERIFY_SERVER_CERT= %d", mysql_flags & CLIENT_SSL_VERIFY_SERVER_CERT? 1:0);
DBG_INF_FMT("CLIENT_REMEMBER_OPTIONS= %d", mysql_flags & CLIENT_REMEMBER_OPTIONS? 1:0);
auth_packet = conn->protocol->m.get_auth_packet(conn->protocol, FALSE);
if (!auth_packet) {
SET_OOM_ERROR(*conn->error_info);
goto end;
}
auth_packet->client_flags = mysql_flags;
auth_packet->max_packet_size = MYSQLND_ASSEMBLED_PACKET_MAX_SIZE;
if (options->charset_name && (charset = mysqlnd_find_charset_name(options->charset_name))) {
auth_packet->charset_no = charset->nr;
} else {
auth_packet->charset_no = greet_packet->charset_no;
}
#ifdef MYSQLND_SSL_SUPPORTED
if ((greet_packet->server_capabilities & CLIENT_SSL) && (mysql_flags & CLIENT_SSL)) {
zend_bool verify = mysql_flags & CLIENT_SSL_VERIFY_SERVER_CERT? TRUE:FALSE;
DBG_INF("Switching to SSL");
if (!PACKET_WRITE(auth_packet, conn)) {
CONN_SET_STATE(conn, CONN_QUIT_SENT);
conn->m->send_close(conn);
SET_CLIENT_ERROR(*conn->error_info, CR_SERVER_GONE_ERROR, UNKNOWN_SQLSTATE, mysqlnd_server_gone);
goto end;
}
conn->net->data->m.set_client_option(conn->net, MYSQL_OPT_SSL_VERIFY_SERVER_CERT, (const char *) &verify);
if (FAIL == conn->net->data->m.enable_ssl(conn->net)) {
goto end;
}
}
#endif
ret = PASS;
end:
PACKET_FREE(auth_packet);
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_conn_data::fetch_auth_plugin_by_name */
static struct st_mysqlnd_authentication_plugin *
MYSQLND_METHOD(mysqlnd_conn_data, fetch_auth_plugin_by_name)(const char * const requested_protocol)
{
struct st_mysqlnd_authentication_plugin * auth_plugin;
char * plugin_name = NULL;
DBG_ENTER("mysqlnd_conn_data::fetch_auth_plugin_by_name");
mnd_sprintf(&plugin_name, 0, "auth_plugin_%s", requested_protocol);
DBG_INF_FMT("looking for %s auth plugin", plugin_name);
auth_plugin = mysqlnd_plugin_find(plugin_name);
mnd_sprintf_free(plugin_name);
DBG_RETURN(auth_plugin);
}
/* }}} */
/* {{{ mysqlnd_run_authentication */
static enum_func_status
mysqlnd_run_authentication(
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 zend_uchar * const auth_plugin_data,
const size_t auth_plugin_data_len,
const char * const auth_protocol,
unsigned int charset_no,
const MYSQLND_OPTIONS * const options,
zend_ulong mysql_flags,
zend_bool silent,
zend_bool is_change_user
)
{
enum_func_status ret = FAIL;
zend_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_len;
plugin_data = mnd_emalloc(plugin_data_len + 1);
if (!plugin_data) {
goto end;
}
memcpy(plugin_data, auth_plugin_data, 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) {
php_error_docref(NULL, E_WARNING, "The server requested authentication method unknown to the client [%s]", requested_protocol);
SET_CLIENT_ERROR(*conn->error_info, CR_NOT_IMPLEMENTED, UNKNOWN_SQLSTATE, "The server requested authentication method unknown to the client");
goto end;
}
DBG_INF("plugin found");
{
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;
if (conn->auth_plugin_data) {
mnd_pefree(conn->auth_plugin_data, conn->persistent);
conn->auth_plugin_data = NULL;
}
conn->auth_plugin_data_len = plugin_data_len;
conn->auth_plugin_data = mnd_pemalloc(conn->auth_plugin_data_len, conn->persistent);
if (!conn->auth_plugin_data) {
SET_OOM_ERROR(*conn->error_info);
goto end;
}
memcpy(conn->auth_plugin_data, plugin_data, plugin_data_len);
DBG_INF_FMT("salt(%d)=[%.*s]", plugin_data_len, plugin_data_len, plugin_data);
/* The data should be allocated with malloc() */
scrambled_data =
auth_plugin->methods.get_auth_data(NULL, &scrambled_data_len, conn, user, passwd, passwd_len,
plugin_data, plugin_data_len, options, &conn->net->data->options, 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, options, mysql_flags,
charset_no,
first_call,
requested_protocol,
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,
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_connect_run_authentication */
static enum_func_status
mysqlnd_connect_run_authentication(
MYSQLND_CONN_DATA * conn,
const char * const user,
const char * const passwd,
const char * const db,
size_t db_len,
size_t passwd_len,
const MYSQLND_PACKET_GREET * const greet_packet,
const MYSQLND_OPTIONS * const options,
zend_ulong mysql_flags
)
{
enum_func_status ret = FAIL;
DBG_ENTER("mysqlnd_connect_run_authentication");
ret = mysqlnd_switch_to_ssl_if_needed(conn, greet_packet, options, mysql_flags);
if (PASS == ret) {
ret = mysqlnd_run_authentication(conn, user, passwd, passwd_len, db, db_len,
greet_packet->auth_plugin_data, greet_packet->auth_plugin_data_len, greet_packet->auth_protocol,
greet_packet->charset_no, options, mysql_flags, FALSE /*silent*/, FALSE/*is_change*/);
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_conn_data::execute_init_commands */
static enum_func_status
MYSQLND_METHOD(mysqlnd_conn_data, execute_init_commands)(MYSQLND_CONN_DATA * conn)
{
enum_func_status ret = PASS;
DBG_ENTER("mysqlnd_conn_data::execute_init_commands");
if (conn->options->init_commands) {
unsigned int current_command = 0;
for (; current_command < conn->options->num_commands; ++current_command) {
const char * const command = conn->options->init_commands[current_command];
if (command) {
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_INIT_COMMAND_EXECUTED_COUNT);
if (PASS != conn->m->query(conn, command, strlen(command))) {
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_INIT_COMMAND_FAILED_COUNT);
ret = FAIL;
break;
}
if (conn->last_query_type == QUERY_SELECT) {
MYSQLND_RES * result = conn->m->use_result(conn, 0);
if (result) {
result->m.free_result(result, TRUE);
}
}
}
}
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_conn_data::get_updated_connect_flags */
static unsigned int
MYSQLND_METHOD(mysqlnd_conn_data, get_updated_connect_flags)(MYSQLND_CONN_DATA * conn, unsigned int mysql_flags)
{
MYSQLND_NET * net = conn->net;
DBG_ENTER("mysqlnd_conn_data::get_updated_connect_flags");
/* we allow load data local infile by default */
mysql_flags |= MYSQLND_CAPABILITIES;
mysql_flags |= conn->options->flags; /* use the flags from set_client_option() */
if (PG(open_basedir) && strlen(PG(open_basedir))) {
mysql_flags ^= CLIENT_LOCAL_FILES;
}
#ifndef MYSQLND_COMPRESSION_ENABLED
if (mysql_flags & CLIENT_COMPRESS) {
mysql_flags &= ~CLIENT_COMPRESS;
}
#else
if (net && net->data->options.flags & MYSQLND_NET_FLAG_USE_COMPRESSION) {
mysql_flags |= CLIENT_COMPRESS;
}
#endif
#ifndef MYSQLND_SSL_SUPPORTED
if (mysql_flags & CLIENT_SSL) {
mysql_flags &= ~CLIENT_SSL;
}
#else
if (net && (net->data->options.ssl_key || net->data->options.ssl_cert ||
net->data->options.ssl_ca || net->data->options.ssl_capath || net->data->options.ssl_cipher))
{
mysql_flags |= CLIENT_SSL;
}
#endif
DBG_RETURN(mysql_flags);
}
/* }}} */
/* {{{ mysqlnd_conn_data::connect_handshake */
static enum_func_status
MYSQLND_METHOD(mysqlnd_conn_data, connect_handshake)(MYSQLND_CONN_DATA * conn,
const char * const host, const char * const user,
const char * const passwd, const unsigned int passwd_len,
const char * const db, const unsigned int db_len,
const unsigned int mysql_flags)
{
MYSQLND_PACKET_GREET * greet_packet;
MYSQLND_NET * net = conn->net;
DBG_ENTER("mysqlnd_conn_data::connect_handshake");
greet_packet = conn->protocol->m.get_greet_packet(conn->protocol, FALSE);
if (!greet_packet) {
SET_OOM_ERROR(*conn->error_info);
DBG_RETURN(FAIL); /* OOM */
}
if (FAIL == net->data->m.connect_ex(conn->net, conn->scheme, conn->scheme_len, conn->persistent,
conn->stats, conn->error_info))
{
goto err;
}
DBG_INF_FMT("stream=%p", net->data->m.get_stream(net));
if (FAIL == PACKET_READ(greet_packet, conn)) {
DBG_ERR("Error while reading greeting packet");
php_error_docref(NULL, E_WARNING, "Error while reading greeting packet. PID=%d", getpid());
goto err;
} else if (greet_packet->error_no) {
DBG_ERR_FMT("errorno=%u error=%s", greet_packet->error_no, greet_packet->error);
SET_CLIENT_ERROR(*conn->error_info, greet_packet->error_no, greet_packet->sqlstate, greet_packet->error);
goto err;
} else if (greet_packet->pre41) {
DBG_ERR_FMT("Connecting to 3.22, 3.23 & 4.0 is not supported. Server is %-.32s", greet_packet->server_version);
php_error_docref(NULL, E_WARNING, "Connecting to 3.22, 3.23 & 4.0 "
" is not supported. Server is %-.32s", greet_packet->server_version);
SET_CLIENT_ERROR(*conn->error_info, CR_NOT_IMPLEMENTED, UNKNOWN_SQLSTATE,
"Connecting to 3.22, 3.23 & 4.0 servers is not supported");
goto err;
}
conn->thread_id = greet_packet->thread_id;
conn->protocol_version = greet_packet->protocol_version;
conn->server_version = mnd_pestrdup(greet_packet->server_version, conn->persistent);
conn->greet_charset = mysqlnd_find_charset_nr(greet_packet->charset_no);
if (!conn->greet_charset) {
php_error_docref(NULL, E_WARNING,
"Server sent charset (%d) unknown to the client. Please, report to the developers", greet_packet->charset_no);
SET_CLIENT_ERROR(*conn->error_info, CR_NOT_IMPLEMENTED, UNKNOWN_SQLSTATE,
"Server sent charset unknown to the client. Please, report to the developers");
goto err;
}
conn->client_flag = mysql_flags;
conn->server_capabilities = greet_packet->server_capabilities;
if (FAIL == mysqlnd_connect_run_authentication(conn, user, passwd, db, db_len, (size_t) passwd_len,
greet_packet, conn->options, mysql_flags))
{
goto err;
}
memset(conn->upsert_status, 0, sizeof(*conn->upsert_status));
conn->upsert_status->warning_count = 0;
conn->upsert_status->server_status = greet_packet->server_status;
conn->upsert_status->affected_rows = 0;
PACKET_FREE(greet_packet);
DBG_RETURN(PASS);
err:
conn->client_flag = 0;
conn->server_capabilities = 0;
PACKET_FREE(greet_packet);
DBG_RETURN(FAIL);
}
/* }}} */
/* {{{ mysqlnd_conn_data::connect */
static enum_func_status
MYSQLND_METHOD(mysqlnd_conn_data, connect)(MYSQLND_CONN_DATA * conn,
const char *host, const char *user,
const char *passwd, unsigned int passwd_len,
const char *db, unsigned int db_len,
unsigned int port,
const char *socket_or_pipe,
unsigned int mysql_flags
)
{
size_t this_func = STRUCT_OFFSET(struct st_mysqlnd_conn_data_methods, connect);
size_t host_len;
zend_bool unix_socket = FALSE;
zend_bool named_pipe = FALSE;
zend_bool reconnect = FALSE;
zend_bool saved_compression = FALSE;
zend_bool local_tx_started = FALSE;
MYSQLND_NET * net = conn->net;
DBG_ENTER("mysqlnd_conn_data::connect");
DBG_INF_FMT("conn=%p", conn);
if (PASS != conn->m->local_tx_start(conn, this_func)) {
goto err;
}
local_tx_started = TRUE;
SET_EMPTY_ERROR(*conn->error_info);
SET_ERROR_AFF_ROWS(conn);
DBG_INF_FMT("host=%s user=%s db=%s port=%u flags=%u persistent=%u state=%u",
host?host:"", user?user:"", db?db:"", port, mysql_flags,
conn? conn->persistent:0, conn? CONN_GET_STATE(conn):-1);
if (CONN_GET_STATE(conn) > CONN_ALLOCED && CONN_GET_STATE(conn) ) {
DBG_INF("Connecting on a connected handle.");
if (CONN_GET_STATE(conn) < CONN_QUIT_SENT) {
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_CLOSE_IMPLICIT);
reconnect = TRUE;
conn->m->send_close(conn);
}
conn->m->free_contents(conn);
MYSQLND_DEC_CONN_STATISTIC(conn->stats, STAT_OPENED_CONNECTIONS);
if (conn->persistent) {
MYSQLND_DEC_CONN_STATISTIC(conn->stats, STAT_OPENED_PERSISTENT_CONNECTIONS);
}
/* Now reconnect using the same handle */
if (net->data->compressed) {
/*
we need to save the state. As we will re-connect, net->compressed should be off, or
we will look for a compression header as part of the greet message, but there will
be none.
*/
saved_compression = TRUE;
net->data->compressed = FALSE;
}
if (net->data->ssl) {
net->data->ssl = FALSE;
}
} else {
unsigned int max_allowed_size = MYSQLND_ASSEMBLED_PACKET_MAX_SIZE;
conn->m->set_client_option(conn, MYSQLND_OPT_MAX_ALLOWED_PACKET, (char *)&max_allowed_size);
}
if (!host || !host[0]) {
host = "localhost";
}
if (!user) {
DBG_INF_FMT("no user given, using empty string");
user = "";
}
if (!passwd) {
DBG_INF_FMT("no password given, using empty string");
passwd = "";
passwd_len = 0;
}
if (!db) {
DBG_INF_FMT("no db given, using empty string");
db = "";
db_len = 0;
} else {
mysql_flags |= CLIENT_CONNECT_WITH_DB;
}
host_len = strlen(host);
{
char * transport = NULL;
int transport_len;
#ifndef PHP_WIN32
if (host_len == sizeof("localhost") - 1 && !strncasecmp(host, "localhost", host_len)) {
DBG_INF_FMT("socket=%s", socket_or_pipe? socket_or_pipe:"n/a");
if (!socket_or_pipe) {
socket_or_pipe = "/tmp/mysql.sock";
}
transport_len = mnd_sprintf(&transport, 0, "unix://%s", socket_or_pipe);
unix_socket = TRUE;
#else
if (host_len == sizeof(".") - 1 && host[0] == '.') {
/* named pipe in socket */
if (!socket_or_pipe) {
socket_or_pipe = "\\\\.\\pipe\\MySQL";
}
transport_len = mnd_sprintf(&transport, 0, "pipe://%s", socket_or_pipe);
named_pipe = TRUE;
#endif
} else {
if (!port) {
port = 3306;
}
transport_len = mnd_sprintf(&transport, 0, "tcp://%s:%u", host, port);
}
if (!transport) {
SET_OOM_ERROR(*conn->error_info);
goto err; /* OOM */
}
DBG_INF_FMT("transport=%s conn->scheme=%s", transport, conn->scheme);
conn->scheme = mnd_pestrndup(transport, transport_len, conn->persistent);
conn->scheme_len = transport_len;
mnd_sprintf_free(transport);
transport = NULL;
if (!conn->scheme) {
goto err; /* OOM */
}
}
mysql_flags = conn->m->get_updated_connect_flags(conn, mysql_flags);
if (FAIL == conn->m->connect_handshake(conn, host, user, passwd, passwd_len, db, db_len, mysql_flags)) {
goto err;
}
{
CONN_SET_STATE(conn, CONN_READY);
if (saved_compression) {
net->data->compressed = TRUE;
}
/*
If a connect on a existing handle is performed and mysql_flags is
passed which doesn't CLIENT_COMPRESS, then we need to overwrite the value
which we set based on saved_compression.
*/
net->data->compressed = mysql_flags & CLIENT_COMPRESS? TRUE:FALSE;
conn->user_len = strlen(user);
conn->user = mnd_pestrndup(user, conn->user_len, conn->persistent);
conn->passwd = mnd_pestrndup(passwd, passwd_len, conn->persistent);