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mysqlnd.c
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mysqlnd.c
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 2006-2012 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Georg Richter <georg@mysql.com> |
| Andrey Hristov <andrey@mysql.com> |
| Ulf Wendel <uwendel@mysql.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#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"
/* for php_get_current_user() */
#include "ext/standard/basic_functions.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;
static zend_bool mysqlnd_library_initted = FALSE;
static struct st_mysqlnd_conn_methods *mysqlnd_conn_methods;
/* {{{ mysqlnd_library_end */
PHPAPI void mysqlnd_library_end(TSRMLS_D)
{
if (mysqlnd_library_initted == TRUE) {
mysqlnd_stats_end(mysqlnd_global_stats);
mysqlnd_global_stats = NULL;
mysqlnd_library_initted = FALSE;
}
}
/* }}} */
/* {{{ mysqlnd_conn::free_options */
static void
MYSQLND_METHOD(mysqlnd_conn, free_options)(MYSQLND * conn TSRMLS_DC)
{
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.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;
}
}
/* }}} */
/* {{{ mysqlnd_conn::free_contents */
static void
MYSQLND_METHOD(mysqlnd_conn, free_contents)(MYSQLND * conn TSRMLS_DC)
{
zend_bool pers = conn->persistent;
DBG_ENTER("mysqlnd_conn::free_contents");
mysqlnd_local_infile_default(conn);
if (conn->current_result) {
conn->current_result->m.free_result(conn->current_result, TRUE TSRMLS_CC);
conn->current_result = NULL;
}
if (conn->net) {
conn->net->m.free_contents(conn->net TSRMLS_CC);
}
DBG_INF("Freeing memory of members");
if (conn->host) {
DBG_INF("Freeing host");
mnd_pefree(conn->host, pers);
conn->host = NULL;
}
if (conn->user) {
DBG_INF("Freeing user");
mnd_pefree(conn->user, pers);
conn->user = NULL;
}
if (conn->passwd) {
DBG_INF("Freeing passwd");
mnd_pefree(conn->passwd, pers);
conn->passwd = NULL;
}
if (conn->connect_or_select_db) {
DBG_INF("Freeing connect_or_select_db");
mnd_pefree(conn->connect_or_select_db, pers);
conn->connect_or_select_db = NULL;
}
if (conn->unix_socket) {
DBG_INF("Freeing unix_socket");
mnd_pefree(conn->unix_socket, pers);
conn->unix_socket = NULL;
}
DBG_INF_FMT("scheme=%s", conn->scheme);
if (conn->scheme) {
DBG_INF("Freeing scheme");
mnd_pefree(conn->scheme, pers);
conn->scheme = NULL;
}
if (conn->server_version) {
DBG_INF("Freeing server_version");
mnd_pefree(conn->server_version, pers);
conn->server_version = NULL;
}
if (conn->host_info) {
DBG_INF("Freeing host_info");
mnd_pefree(conn->host_info, pers);
conn->host_info = NULL;
}
if (conn->scramble) {
DBG_INF("Freeing scramble");
mnd_pefree(conn->scramble, pers);
conn->scramble = NULL;
}
if (conn->last_message) {
mnd_pefree(conn->last_message, pers);
conn->last_message = NULL;
}
conn->charset = NULL;
conn->greet_charset = NULL;
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_conn::dtor */
static void
MYSQLND_METHOD_PRIVATE(mysqlnd_conn, dtor)(MYSQLND * conn TSRMLS_DC)
{
DBG_ENTER("mysqlnd_conn::dtor");
DBG_INF_FMT("conn=%llu", conn->thread_id);
conn->m->free_contents(conn TSRMLS_CC);
conn->m->free_options(conn TSRMLS_CC);
if (conn->net) {
DBG_INF("Freeing net");
mysqlnd_net_free(conn->net TSRMLS_CC);
conn->net = NULL;
}
if (conn->protocol) {
DBG_INF("Freeing protocol");
mysqlnd_protocol_free(conn->protocol TSRMLS_CC);
conn->protocol = NULL;
}
if (conn->stats) {
mysqlnd_stats_end(conn->stats);
}
mnd_pefree(conn, conn->persistent);
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_conn::simple_command_handle_response */
static enum_func_status
MYSQLND_METHOD(mysqlnd_conn, simple_command_handle_response)(MYSQLND * conn, enum mysqlnd_packet_type ok_packet,
zend_bool silent, enum php_mysqlnd_server_command command,
zend_bool ignore_upsert_status TSRMLS_DC)
{
enum_func_status ret = FAIL;
DBG_ENTER("mysqlnd_conn::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 TSRMLS_CC);
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 TSRMLS_CC, 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) {
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 TSRMLS_CC);
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 TSRMLS_CC, 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 TSRMLS_CC, 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 TSRMLS_CC, E_ERROR, "Wrong response packet %u passed to the function", ok_packet);
break;
}
DBG_INF(ret == PASS ? "PASS":"FAIL");
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_conn::simple_command */
static enum_func_status
MYSQLND_METHOD(mysqlnd_conn, simple_command)(MYSQLND * conn, enum php_mysqlnd_server_command command,
const char * const arg, size_t arg_len, enum mysqlnd_packet_type ok_packet, zend_bool silent,
zend_bool ignore_upsert_status TSRMLS_DC)
{
enum_func_status ret = PASS;
MYSQLND_PACKET_COMMAND * cmd_packet;
DBG_ENTER("mysqlnd_conn::simple_command");
DBG_INF_FMT("command=%s ok_packet=%u silent=%u", mysqlnd_command_to_text[command], ok_packet, silent);
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);
}
/* clean UPSERT info */
if (!ignore_upsert_status) {
memset(&conn->upsert_status, 0, sizeof(conn->upsert_status));
}
SET_ERROR_AFF_ROWS(conn);
SET_EMPTY_ERROR(conn->error_info);
cmd_packet = conn->protocol->m.get_command_packet(conn->protocol, FALSE TSRMLS_CC);
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());
}
DBG_ERR("Server is gone");
ret = FAIL;
} else if (ok_packet != PROT_LAST) {
ret = conn->m->simple_command_handle_response(conn, ok_packet, silent, command, ignore_upsert_status TSRMLS_CC);
}
PACKET_FREE(cmd_packet);
DBG_INF(ret == PASS ? "PASS":"FAIL");
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_conn::set_server_option */
static enum_func_status
MYSQLND_METHOD(mysqlnd_conn, set_server_option)(MYSQLND * const conn, enum_mysqlnd_server_option option TSRMLS_DC)
{
enum_func_status ret;
char buffer[2];
DBG_ENTER("mysqlnd_conn::set_server_option");
int2store(buffer, (unsigned int) option);
ret = conn->m->simple_command(conn, COM_SET_OPTION, buffer, sizeof(buffer), PROT_EOF_PACKET, FALSE, TRUE TSRMLS_CC);
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_conn::restart_psession */
static enum_func_status
MYSQLND_METHOD(mysqlnd_conn, restart_psession)(MYSQLND * conn TSRMLS_DC)
{
DBG_ENTER("mysqlnd_conn::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::end_psession */
static enum_func_status
MYSQLND_METHOD(mysqlnd_conn, end_psession)(MYSQLND * conn TSRMLS_DC)
{
DBG_ENTER("mysqlnd_conn::end_psession");
DBG_RETURN(PASS);
}
/* }}} */
#define MYSQLND_ASSEBLED_PACKET_MAX_SIZE 3UL*1024UL*1024UL*1024UL
/* {{{ mysqlnd_connect_run_authentication */
static enum_func_status
mysqlnd_connect_run_authentication(
MYSQLND * conn,
const char * const user,
const char * const passwd,
const char * const db,
size_t db_len,
const MYSQLND_PACKET_GREET * const greet_packet,
const MYSQLND_OPTIONS * const options,
unsigned long mysql_flags
TSRMLS_DC)
{
const MYSQLND_CHARSET * charset = NULL;
enum_func_status ret = FAIL;
MYSQLND_PACKET_AUTH * auth_packet = conn->protocol->m.get_auth_packet(conn->protocol, FALSE TSRMLS_CC);
MYSQLND_PACKET_OK * ok_packet = conn->protocol->m.get_ok_packet(conn->protocol, FALSE TSRMLS_CC);
DBG_ENTER("mysqlnd_connect_run_authentication");
if (!auth_packet || !ok_packet) {
SET_OOM_ERROR(conn->error_info);
goto err;
}
#ifdef MYSQLND_SSL_SUPPORTED
if ((greet_packet->server_capabilities & CLIENT_SSL) && (mysql_flags & CLIENT_SSL)) {
auth_packet->send_half_packet = TRUE;
}
#endif
auth_packet->user = user;
auth_packet->password = passwd;
if (options->charset_name && (charset = mysqlnd_find_charset_name(options->charset_name))) {
auth_packet->charset_no = charset->nr;
} else {
#if MYSQLND_UNICODE
auth_packet->charset_no = 200;/* utf8 - swedish collation, check mysqlnd_charset.c */
#else
auth_packet->charset_no = greet_packet->charset_no;
#endif
}
auth_packet->db = db;
auth_packet->db_len = db_len;
auth_packet->max_packet_size= MYSQLND_ASSEBLED_PACKET_MAX_SIZE;
auth_packet->client_flags= mysql_flags;
conn->scramble = auth_packet->server_scramble_buf = mnd_pemalloc(SCRAMBLE_LENGTH, conn->persistent);
if (!conn->scramble) {
SET_OOM_ERROR(conn->error_info);
goto err;
}
memcpy(auth_packet->server_scramble_buf, greet_packet->scramble_buf, SCRAMBLE_LENGTH);
if (!PACKET_WRITE(auth_packet, conn)) {
CONN_SET_STATE(conn, CONN_QUIT_SENT);
SET_CLIENT_ERROR(conn->error_info, CR_SERVER_GONE_ERROR, UNKNOWN_SQLSTATE, mysqlnd_server_gone);
goto err;
}
#ifdef MYSQLND_SSL_SUPPORTED
if (auth_packet->send_half_packet) {
zend_bool verify = mysql_flags & CLIENT_SSL_VERIFY_SERVER_CERT? TRUE:FALSE;
DBG_INF("Switching to SSL");
conn->net->m.set_client_option(conn->net, MYSQL_OPT_SSL_VERIFY_SERVER_CERT, (const char *) &verify TSRMLS_CC);
if (FAIL == conn->net->m.enable_ssl(conn->net TSRMLS_CC)) {
goto err;
}
auth_packet->send_half_packet = FALSE;
if (!PACKET_WRITE(auth_packet, conn)) {
CONN_SET_STATE(conn, CONN_QUIT_SENT);
SET_CLIENT_ERROR(conn->error_info, CR_SERVER_GONE_ERROR, UNKNOWN_SQLSTATE, mysqlnd_server_gone);
goto err;
}
}
#endif
if (FAIL == PACKET_READ(ok_packet, conn) || ok_packet->field_count >= 0xFE) {
if (ok_packet->field_count == 0xFE) {
/* old authentication with new server !*/
DBG_ERR(mysqlnd_old_passwd);
SET_CLIENT_ERROR(conn->error_info, CR_UNKNOWN_ERROR, UNKNOWN_SQLSTATE, mysqlnd_old_passwd);
} else if (ok_packet->field_count == 0xFF) {
if (ok_packet->sqlstate[0]) {
strlcpy(conn->error_info.sqlstate, ok_packet->sqlstate, sizeof(conn->error_info.sqlstate));
DBG_ERR_FMT("ERROR:%u [SQLSTATE:%s] %s", ok_packet->error_no, ok_packet->sqlstate, ok_packet->error);
}
conn->error_info.error_no = ok_packet->error_no;
strlcpy(conn->error_info.error, ok_packet->error, sizeof(conn->error_info.error));
}
goto err;
}
SET_NEW_MESSAGE(conn->last_message, conn->last_message_len,
ok_packet->message, ok_packet->message_len,
conn->persistent);
conn->charset = mysqlnd_find_charset_nr(auth_packet->charset_no);
ret = PASS;
err:
PACKET_FREE(auth_packet);
PACKET_FREE(ok_packet);
DBG_RETURN(ret);
}
/* }}} */
#define MYSQLND_CAPABILITIES (CLIENT_LONG_PASSWORD | CLIENT_LONG_FLAG | CLIENT_TRANSACTIONS | \
CLIENT_PROTOCOL_41 | CLIENT_SECURE_CONNECTION | \
CLIENT_MULTI_RESULTS)
/* {{{ mysqlnd_conn::connect */
static enum_func_status
MYSQLND_METHOD(mysqlnd_conn, connect)(MYSQLND * 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
TSRMLS_DC)
{
char *errstr = NULL;
int errcode = 0, host_len;
zend_bool unix_socket = FALSE;
zend_bool reconnect = FALSE;
zend_bool saved_compression = FALSE;
MYSQLND_PACKET_GREET * greet_packet = NULL;
DBG_ENTER("mysqlnd_conn::connect");
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 && 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 TSRMLS_CC);
}
conn->m->free_contents(conn TSRMLS_CC);
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 (conn->net->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;
conn->net->compressed = FALSE;
}
}
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;
}
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 = spprintf(&transport, 0, "unix://%s", socket_or_pipe);
unix_socket = TRUE;
} else
#endif
{
if (!port) {
port = 3306;
}
transport_len = spprintf(&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;
efree(transport); /* allocated by spprintf */
transport = NULL;
if (!conn->scheme) {
goto err; /* OOM */
}
}
greet_packet = conn->protocol->m.get_greet_packet(conn->protocol, FALSE TSRMLS_CC);
if (!greet_packet) {
SET_OOM_ERROR(conn->error_info);
goto err; /* OOM */
}
if (FAIL == conn->net->m.connect(conn->net, conn->scheme, conn->scheme_len, conn->persistent, &errstr, &errcode TSRMLS_CC)) {
goto err;
}
DBG_INF_FMT("stream=%p", conn->net->stream);
if (FAIL == PACKET_READ(greet_packet, conn)) {
DBG_ERR("Error while reading greeting packet");
php_error_docref(NULL TSRMLS_CC, 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 TSRMLS_CC, 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 TSRMLS_CC, 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;
}
/* we allow load data local infile by default */
mysql_flags |= CLIENT_LOCAL_FILES | CLIENT_PS_MULTI_RESULTS;
mysql_flags |= MYSQLND_CAPABILITIES;
if (db) {
mysql_flags |= CLIENT_CONNECT_WITH_DB;
}
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 (conn->net->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 (conn->net->options.ssl_key || conn->net->options.ssl_cert ||
conn->net->options.ssl_ca || conn->net->options.ssl_capath || conn->net->options.ssl_cipher)
{
mysql_flags |= CLIENT_SSL;
}
#endif
if (FAIL == mysqlnd_connect_run_authentication(conn, user, passwd, db, db_len, greet_packet, &conn->options, mysql_flags TSRMLS_CC)) {
goto err;
}
{
CONN_SET_STATE(conn, CONN_READY);
if (saved_compression) {
conn->net->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.
*/
conn->net->compressed = mysql_flags & CLIENT_COMPRESS? TRUE:FALSE;
conn->user = mnd_pestrdup(user, conn->persistent);
conn->user_len = strlen(conn->user);
conn->passwd = mnd_pestrndup(passwd, passwd_len, conn->persistent);
conn->passwd_len = passwd_len;
conn->port = port;
conn->connect_or_select_db = mnd_pestrndup(db, db_len, conn->persistent);
conn->connect_or_select_db_len = db_len;
if (!conn->user || !conn->passwd || !conn->connect_or_select_db) {
SET_OOM_ERROR(conn->error_info);
goto err; /* OOM */
}
if (!unix_socket) {
conn->host = mnd_pestrdup(host, conn->persistent);
if (!conn->host) {
SET_OOM_ERROR(conn->error_info);
goto err; /* OOM */
}
conn->host_len = strlen(conn->host);
{
char *p;
spprintf(&p, 0, "%s via TCP/IP", conn->host);
if (!p) {
SET_OOM_ERROR(conn->error_info);
goto err; /* OOM */
}
conn->host_info = mnd_pestrdup(p, conn->persistent);
efree(p); /* allocated by spprintf */
if (!conn->host_info) {
SET_OOM_ERROR(conn->error_info);
goto err; /* OOM */
}
}
} else {
conn->unix_socket = mnd_pestrdup(socket_or_pipe, conn->persistent);
conn->host_info = mnd_pestrdup("Localhost via UNIX socket", conn->persistent);
if (!conn->unix_socket || !conn->host_info) {
SET_OOM_ERROR(conn->error_info);
goto err; /* OOM */
}
conn->unix_socket_len = strlen(conn->unix_socket);
}
conn->client_flag = mysql_flags;
conn->max_packet_size = MYSQLND_ASSEBLED_PACKET_MAX_SIZE;
/* todo: check if charset is available */
conn->server_capabilities = greet_packet->server_capabilities;
conn->upsert_status.warning_count = 0;
conn->upsert_status.server_status = greet_packet->server_status;
conn->upsert_status.affected_rows = 0;
SET_EMPTY_ERROR(conn->error_info);
mysqlnd_local_infile_default(conn);
#if MYSQLND_UNICODE
{
unsigned int as_unicode = 1;
conn->m->set_client_option(conn, MYSQLND_OPT_NUMERIC_AND_DATETIME_AS_UNICODE, (char *)&as_unicode TSRMLS_CC);
DBG_INF("unicode set");
}
#endif
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) TSRMLS_CC)) {
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_INIT_COMMAND_FAILED_COUNT);
goto err;
}
if (conn->last_query_type == QUERY_SELECT) {
MYSQLND_RES * result = conn->m->use_result(conn TSRMLS_CC);
if (result) {
result->m.free_result(result, TRUE TSRMLS_CC);
}
}
}
}
}
MYSQLND_INC_CONN_STATISTIC_W_VALUE2(conn->stats, STAT_CONNECT_SUCCESS, 1, STAT_OPENED_CONNECTIONS, 1);
if (reconnect) {
MYSQLND_INC_GLOBAL_STATISTIC(STAT_RECONNECT);
}
if (conn->persistent) {
MYSQLND_INC_CONN_STATISTIC_W_VALUE2(conn->stats, STAT_PCONNECT_SUCCESS, 1, STAT_OPENED_PERSISTENT_CONNECTIONS, 1);
}
DBG_INF_FMT("connection_id=%llu", conn->thread_id);
PACKET_FREE(greet_packet);
DBG_RETURN(PASS);
}
err:
PACKET_FREE(greet_packet);
if (errstr) {
DBG_ERR_FMT("[%u] %.128s (trying to connect via %s)", errcode, errstr, conn->scheme);
SET_CLIENT_ERROR(conn->error_info, errcode? errcode:CR_CONNECTION_ERROR, UNKNOWN_SQLSTATE, errstr);
php_error_docref(NULL TSRMLS_CC, E_WARNING, "[%u] %.128s (trying to connect via %s)", errcode, errstr, conn->scheme);
/* no mnd_ since we don't allocate it */
efree(errstr);
}
conn->m->free_contents(conn TSRMLS_CC);
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_CONNECT_FAILURE);
DBG_RETURN(FAIL);
}
/* }}} */
/* {{{ mysqlnd_connect */
PHPAPI MYSQLND * mysqlnd_connect(MYSQLND * 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
TSRMLS_DC)
{
enum_func_status ret = FAIL;
zend_bool self_alloced = FALSE;
DBG_ENTER("mysqlnd_connect");
DBG_INF_FMT("host=%s user=%s db=%s port=%u flags=%u", host?host:"", user?user:"", db?db:"", port, mysql_flags);
if (!conn) {
self_alloced = TRUE;
if (!(conn = mysqlnd_init(FALSE))) {
/* OOM */
DBG_RETURN(NULL);
}
}
ret = conn->m->connect(conn, host, user, passwd, passwd_len, db, db_len, port, socket_or_pipe, mysql_flags TSRMLS_CC);
if (ret == FAIL) {
if (self_alloced) {
/*
We have alloced, thus there are no references to this
object - we are free to kill it!
*/
conn->m->dtor(conn TSRMLS_CC);
}
DBG_RETURN(NULL);
}
DBG_RETURN(conn);
}
/* }}} */
/* {{{ mysqlnd_conn::change_user */
static enum_func_status
MYSQLND_METHOD(mysqlnd_conn, change_user)(MYSQLND * const conn,
const char *user,
const char *passwd,
const char *db,
zend_bool silent TSRMLS_DC)
{
size_t user_len;
enum_func_status ret = FAIL;
MYSQLND_PACKET_CHG_USER_RESPONSE * chg_user_resp;
char buffer[MYSQLND_MAX_ALLOWED_USER_LEN + 1 + 1 + SCRAMBLE_LENGTH + MYSQLND_MAX_ALLOWED_DB_LEN + 1 + 2 /* charset*/ + 2];
char *p = buffer;
const MYSQLND_CHARSET * old_cs = conn->charset;
DBG_ENTER("mysqlnd_conn::change_user");
DBG_INF_FMT("conn=%llu user=%s passwd=%s db=%s silent=%u",
conn->thread_id, user?user:"", passwd?"***":"null", db?db:"", (silent == TRUE)?1:0 );
SET_ERROR_AFF_ROWS(conn);
if (!user) {
user = "";
}
if (!passwd) {
passwd = "";
}
if (!db) {
db = "";
}
/* 1. user ASCIIZ */
user_len = MIN(strlen(user), MYSQLND_MAX_ALLOWED_USER_LEN);
memcpy(p, user, user_len);
p += user_len;
*p++ = '\0';
/* 2. password SCRAMBLE_LENGTH followed by the scramble or \0 */
if (passwd[0]) {
*p++ = SCRAMBLE_LENGTH;
php_mysqlnd_scramble((unsigned char *)p, conn->scramble, (unsigned char *)passwd);
p += SCRAMBLE_LENGTH;
} else {
*p++ = '\0';
}
/* 3. db ASCIIZ */
if (db[0]) {
size_t db_len = MIN(strlen(db), MYSQLND_MAX_ALLOWED_DB_LEN);
memcpy(p, db, db_len);
p += db_len;
}
*p++ = '\0';
/*
4. request the current charset, or it will be reset to the system one.
5.0 doesn't support it. Support added in 5.1.23 by fixing the following bug :
Bug #30472 libmysql doesn't reset charset, insert_id after succ. mysql_change_user() call
*/
if (mysqlnd_get_server_version(conn) >= 50123) {
int2store(p, conn->charset->nr);
p+=2;
}
if (PASS != conn->m->simple_command(conn, COM_CHANGE_USER, buffer, p - buffer,
PROT_LAST /* we will handle the OK packet*/,
silent, TRUE TSRMLS_CC)) {
DBG_RETURN(FAIL);
}
chg_user_resp = conn->protocol->m.get_change_user_response_packet(conn->protocol, FALSE TSRMLS_CC);
if (!chg_user_resp) {
SET_OOM_ERROR(conn->error_info);
goto end;
}
ret = PACKET_READ(chg_user_resp, conn);
conn->error_info = chg_user_resp->error_info;
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 (mysqlnd_get_server_version(conn) > 50113L && mysqlnd_get_server_version(conn) < 50118L) {
MYSQLND_PACKET_OK * redundant_error_packet = conn->protocol->m.get_ok_packet(conn->protocol, FALSE TSRMLS_CC);
if (redundant_error_packet) {
PACKET_READ(redundant_error_packet, conn);
PACKET_FREE(redundant_error_packet);
DBG_INF_FMT("Server is %u, buggy, sends two ERR messages", mysqlnd_get_server_version(conn));
} else {
SET_OOM_ERROR(conn->error_info);
}
}
}
if (ret == PASS) {
char * tmp = NULL;
/* if we get conn->user as parameter and then we first free it, then estrndup it, we will crash */
tmp = mnd_pestrndup(user, user_len, conn->persistent);
if (conn->user) {
mnd_pefree(conn->user, conn->persistent);
}
conn->user = tmp;