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mysqlnd_ps.c
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 2006-2011 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_result_meta.h"
#include "mysqlnd_statistics.h"
#include "mysqlnd_debug.h"
#include "mysqlnd_block_alloc.h"
#define MYSQLND_SILENT
const char * const mysqlnd_not_bound_as_blob = "Can't send long data for non-string/non-binary data types";
const char * const mysqlnd_stmt_not_prepared = "Statement not prepared";
static struct st_mysqlnd_stmt_methods *mysqlnd_stmt_methods;
/* Exported by mysqlnd_ps_codec.c */
enum_func_status mysqlnd_stmt_execute_generate_request(MYSQLND_STMT * const s, zend_uchar ** request, size_t *request_len, zend_bool * free_buffer TSRMLS_DC);
enum_func_status mysqlnd_fetch_stmt_row_buffered(MYSQLND_RES *result, void *param,
unsigned int flags,
zend_bool *fetched_anything TSRMLS_DC);
enum_func_status mysqlnd_fetch_stmt_row_cursor(MYSQLND_RES *result, void *param,
unsigned int flags,
zend_bool *fetched_anything TSRMLS_DC);
static void mysqlnd_stmt_separate_result_bind(MYSQLND_STMT * const stmt TSRMLS_DC);
static void mysqlnd_stmt_separate_one_result_bind(MYSQLND_STMT * const stmt, unsigned int param_no TSRMLS_DC);
/* {{{ mysqlnd_stmt::store_result */
static MYSQLND_RES *
MYSQLND_METHOD(mysqlnd_stmt, store_result)(MYSQLND_STMT * const s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
enum_func_status ret;
MYSQLND * conn;
MYSQLND_RES * result;
zend_bool to_cache = FALSE;
DBG_ENTER("mysqlnd_stmt::store_result");
if (!stmt || !stmt->conn || !stmt->result) {
DBG_RETURN(NULL);
}
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
conn = stmt->conn;
/* be compliant with libmysql - NULL will turn */
if (!stmt->field_count) {
DBG_RETURN(NULL);
}
if (stmt->cursor_exists) {
/* Silently convert buffered to unbuffered, for now */
DBG_RETURN(s->m->use_result(s TSRMLS_CC));
}
/* Nothing to store for UPSERT/LOAD DATA*/
if (CONN_GET_STATE(conn) != CONN_FETCHING_DATA ||
stmt->state != MYSQLND_STMT_WAITING_USE_OR_STORE)
{
SET_CLIENT_ERROR(conn->error_info, CR_COMMANDS_OUT_OF_SYNC,
UNKNOWN_SQLSTATE, mysqlnd_out_of_sync);
DBG_RETURN(NULL);
}
stmt->default_rset_handler = s->m->store_result;
SET_EMPTY_ERROR(stmt->error_info);
SET_EMPTY_ERROR(stmt->conn->error_info);
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_PS_BUFFERED_SETS);
result = stmt->result;
result->type = MYSQLND_RES_PS_BUF;
result->m.fetch_row = mysqlnd_fetch_stmt_row_buffered;
result->m.fetch_lengths = NULL;/* makes no sense */
result->result_set_memory_pool = mysqlnd_mempool_create(MYSQLND_G(mempool_default_size) TSRMLS_CC);
ret = result->m.store_result_fetch_data(conn, result, result->meta, TRUE, to_cache TSRMLS_CC);
if (PASS == ret) {
/* libmysql API docs say it should be so for SELECT statements */
stmt->upsert_status.affected_rows = stmt->result->stored_data->row_count;
stmt->state = MYSQLND_STMT_USE_OR_STORE_CALLED;
} else {
conn->error_info = result->stored_data->error_info;
stmt->result->m.free_result_contents(stmt->result TSRMLS_CC);
mnd_efree(stmt->result);
stmt->result = NULL;
stmt->state = MYSQLND_STMT_PREPARED;
}
DBG_RETURN(result);
}
/* }}} */
/* {{{ mysqlnd_stmt::get_result */
static MYSQLND_RES *
MYSQLND_METHOD(mysqlnd_stmt, get_result)(MYSQLND_STMT * const s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND * conn;
MYSQLND_RES *result;
DBG_ENTER("mysqlnd_stmt::get_result");
if (!stmt || !stmt->conn || !stmt->result) {
DBG_RETURN(NULL);
}
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
conn = stmt->conn;
/* be compliant with libmysql - NULL will turn */
if (!stmt->field_count) {
DBG_RETURN(NULL);
}
if (stmt->cursor_exists) {
/* Silently convert buffered to unbuffered, for now */
DBG_RETURN(s->m->use_result(s TSRMLS_CC));
}
/* Nothing to store for UPSERT/LOAD DATA*/
if (CONN_GET_STATE(conn) != CONN_FETCHING_DATA || stmt->state != MYSQLND_STMT_WAITING_USE_OR_STORE) {
SET_CLIENT_ERROR(conn->error_info, CR_COMMANDS_OUT_OF_SYNC,
UNKNOWN_SQLSTATE, mysqlnd_out_of_sync);
DBG_RETURN(NULL);
}
SET_EMPTY_ERROR(stmt->error_info);
SET_EMPTY_ERROR(stmt->conn->error_info);
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_BUFFERED_SETS);
do {
result = conn->m->result_init(stmt->result->field_count, stmt->persistent TSRMLS_CC);
if (!result) {
SET_OOM_ERROR(stmt->conn->error_info);
break;
}
result->meta = stmt->result->meta->m->clone_metadata(stmt->result->meta, FALSE TSRMLS_CC);
if (!result->meta) {
SET_OOM_ERROR(stmt->conn->error_info);
break;
}
if ((result = result->m.store_result(result, conn, TRUE TSRMLS_CC))) {
stmt->upsert_status.affected_rows = result->stored_data->row_count;
stmt->state = MYSQLND_STMT_PREPARED;
result->type = MYSQLND_RES_PS_BUF;
} else {
stmt->error_info = conn->error_info;
stmt->state = MYSQLND_STMT_PREPARED;
break;
}
DBG_RETURN(result);
} while (0);
if (result) {
result->m.free_result(result, TRUE TSRMLS_CC);
}
DBG_RETURN(NULL);
}
/* }}} */
/* {{{ mysqlnd_stmt::more_results */
static zend_bool
MYSQLND_METHOD(mysqlnd_stmt, more_results)(const MYSQLND_STMT * s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
DBG_ENTER("mysqlnd_stmt::more_results");
/* (conn->state == CONN_NEXT_RESULT_PENDING) too */
DBG_RETURN((stmt && stmt->conn && (stmt->conn->upsert_status.server_status &
SERVER_MORE_RESULTS_EXISTS))?
TRUE:
FALSE);
}
/* }}} */
/* {{{ mysqlnd_stmt::next_result */
static enum_func_status
MYSQLND_METHOD(mysqlnd_stmt, next_result)(MYSQLND_STMT * s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND * conn;
DBG_ENTER("mysqlnd_stmt::next_result");
if (!stmt || !stmt->conn || !stmt->result) {
DBG_RETURN(FAIL);
}
conn = stmt->conn;
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
if (CONN_GET_STATE(conn) != CONN_NEXT_RESULT_PENDING || !(conn->upsert_status.server_status & SERVER_MORE_RESULTS_EXISTS)) {
DBG_RETURN(FAIL);
}
DBG_INF_FMT("server_status=%u cursor=%u", stmt->upsert_status.server_status, stmt->upsert_status.server_status & SERVER_STATUS_CURSOR_EXISTS);
DBG_INF_FMT("server_status=%u cursor=%u", conn->upsert_status.server_status, conn->upsert_status.server_status & SERVER_STATUS_CURSOR_EXISTS);
/* Free space for next result */
s->m->free_stmt_content(s TSRMLS_CC);
{
enum_func_status ret = s->m->parse_execute_response(s TSRMLS_CC);
DBG_RETURN(ret);
}
}
/* }}} */
/* {{{ mysqlnd_stmt_skip_metadata */
static enum_func_status
mysqlnd_stmt_skip_metadata(MYSQLND_STMT * s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
/* Follows parameter metadata, we have just to skip it, as libmysql does */
unsigned int i = 0;
enum_func_status ret = FAIL;
MYSQLND_PACKET_RES_FIELD * field_packet;
DBG_ENTER("mysqlnd_stmt_skip_metadata");
if (!stmt || !stmt->conn || !stmt->conn->protocol) {
DBG_RETURN(FAIL);
}
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
field_packet = stmt->conn->protocol->m.get_result_field_packet(stmt->conn->protocol, FALSE TSRMLS_CC);
if (!field_packet) {
SET_OOM_ERROR(stmt->error_info);
SET_OOM_ERROR(stmt->conn->error_info);
} else {
ret = PASS;
field_packet->skip_parsing = TRUE;
for (;i < stmt->param_count; i++) {
if (FAIL == PACKET_READ(field_packet, stmt->conn)) {
ret = FAIL;
break;
}
}
PACKET_FREE(field_packet);
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_stmt_read_prepare_response */
static enum_func_status
mysqlnd_stmt_read_prepare_response(MYSQLND_STMT * s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND_PACKET_PREPARE_RESPONSE * prepare_resp;
enum_func_status ret = FAIL;
DBG_ENTER("mysqlnd_stmt_read_prepare_response");
if (!stmt || !stmt->conn || !stmt->conn->protocol) {
DBG_RETURN(FAIL);
}
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
prepare_resp = stmt->conn->protocol->m.get_prepare_response_packet(stmt->conn->protocol, FALSE TSRMLS_CC);
if (!prepare_resp) {
SET_OOM_ERROR(stmt->error_info);
SET_OOM_ERROR(stmt->conn->error_info);
goto done;
}
if (FAIL == PACKET_READ(prepare_resp, stmt->conn)) {
goto done;
}
if (0xFF == prepare_resp->error_code) {
stmt->error_info = stmt->conn->error_info = prepare_resp->error_info;
goto done;
}
ret = PASS;
stmt->stmt_id = prepare_resp->stmt_id;
stmt->warning_count = stmt->conn->upsert_status.warning_count = prepare_resp->warning_count;
stmt->field_count = stmt->conn->field_count = prepare_resp->field_count;
stmt->param_count = prepare_resp->param_count;
done:
PACKET_FREE(prepare_resp);
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_stmt_prepare_read_eof */
static enum_func_status
mysqlnd_stmt_prepare_read_eof(MYSQLND_STMT * s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND_PACKET_EOF * fields_eof;
enum_func_status ret = FAIL;
DBG_ENTER("mysqlnd_stmt_prepare_read_eof");
if (!stmt || !stmt->conn || !stmt->conn->protocol) {
DBG_RETURN(FAIL);
}
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
fields_eof = stmt->conn->protocol->m.get_eof_packet(stmt->conn->protocol, FALSE TSRMLS_CC);
if (!fields_eof) {
SET_OOM_ERROR(stmt->error_info);
SET_OOM_ERROR(stmt->conn->error_info);
} else {
if (FAIL == (ret = PACKET_READ(fields_eof, stmt->conn))) {
if (stmt->result) {
stmt->result->m.free_result_contents(stmt->result TSRMLS_CC);
mnd_efree(stmt->result);
memset(stmt, 0, sizeof(MYSQLND_STMT_DATA));
stmt->state = MYSQLND_STMT_INITTED;
}
} else {
stmt->upsert_status.server_status = fields_eof->server_status;
stmt->upsert_status.warning_count = fields_eof->warning_count;
stmt->state = MYSQLND_STMT_PREPARED;
}
PACKET_FREE(fields_eof);
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_stmt::prepare */
static enum_func_status
MYSQLND_METHOD(mysqlnd_stmt, prepare)(MYSQLND_STMT * const s, const char * const query, unsigned int query_len TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND_STMT * s_to_prepare = s;
MYSQLND_STMT_DATA * stmt_to_prepare = stmt;
DBG_ENTER("mysqlnd_stmt::prepare");
if (!stmt || !stmt->conn) {
DBG_RETURN(FAIL);
}
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
SET_ERROR_AFF_ROWS(stmt);
SET_ERROR_AFF_ROWS(stmt->conn);
SET_EMPTY_ERROR(stmt->error_info);
SET_EMPTY_ERROR(stmt->conn->error_info);
if (stmt->state > MYSQLND_STMT_INITTED) {
/* See if we have to clean the wire */
if (stmt->state == MYSQLND_STMT_WAITING_USE_OR_STORE) {
/* Do implicit use_result and then flush the result */
stmt->default_rset_handler = s->m->use_result;
stmt->default_rset_handler(s TSRMLS_CC);
}
/* No 'else' here please :) */
if (stmt->state > MYSQLND_STMT_WAITING_USE_OR_STORE && stmt->result) {
stmt->result->m.skip_result(stmt->result TSRMLS_CC);
}
/*
Create a new test statement, which we will prepare, but if anything
fails, we will scrap it.
*/
s_to_prepare = stmt->conn->m->stmt_init(stmt->conn TSRMLS_CC);
if (!s_to_prepare) {
goto fail;
}
stmt_to_prepare = s_to_prepare->data;
}
if (FAIL == stmt_to_prepare->conn->m->simple_command(stmt_to_prepare->conn, COM_STMT_PREPARE, query, query_len, PROT_LAST, FALSE, TRUE TSRMLS_CC) ||
FAIL == mysqlnd_stmt_read_prepare_response(s_to_prepare TSRMLS_CC))
{
goto fail;
}
if (stmt_to_prepare->param_count) {
if (FAIL == mysqlnd_stmt_skip_metadata(s_to_prepare TSRMLS_CC) ||
FAIL == mysqlnd_stmt_prepare_read_eof(s_to_prepare TSRMLS_CC))
{
goto fail;
}
}
/*
Read metadata only if there is actual result set.
Beware that SHOW statements bypass the PS framework and thus they send
no metadata at prepare.
*/
if (stmt_to_prepare->field_count) {
MYSQLND_RES * result = stmt->conn->m->result_init(stmt_to_prepare->field_count, stmt_to_prepare->persistent TSRMLS_CC);
if (!result) {
SET_OOM_ERROR(stmt->conn->error_info);
goto fail;
}
/* Allocate the result now as it is needed for the reading of metadata */
stmt_to_prepare->result = result;
result->conn = stmt_to_prepare->conn->m->get_reference(stmt_to_prepare->conn TSRMLS_CC);
result->type = MYSQLND_RES_PS_BUF;
if (FAIL == result->m.read_result_metadata(result, stmt_to_prepare->conn TSRMLS_CC) ||
FAIL == mysqlnd_stmt_prepare_read_eof(s_to_prepare TSRMLS_CC))
{
goto fail;
}
}
if (stmt_to_prepare != stmt) {
/* swap */
size_t real_size = sizeof(MYSQLND_STMT) + mysqlnd_plugin_count() * sizeof(void *);
char * tmp_swap = mnd_malloc(real_size);
memcpy(tmp_swap, s, real_size);
memcpy(s, s_to_prepare, real_size);
memcpy(s_to_prepare, tmp_swap, real_size);
mnd_free(tmp_swap);
{
MYSQLND_STMT_DATA * tmp_swap_data = stmt_to_prepare;
stmt_to_prepare = stmt;
stmt = tmp_swap_data;
}
s_to_prepare->m->dtor(s_to_prepare, TRUE TSRMLS_CC);
}
stmt->state = MYSQLND_STMT_PREPARED;
DBG_INF("PASS");
DBG_RETURN(PASS);
fail:
if (stmt_to_prepare != stmt && s_to_prepare) {
s_to_prepare->m->dtor(s_to_prepare, TRUE TSRMLS_CC);
}
stmt->state = MYSQLND_STMT_INITTED;
DBG_INF("FAIL");
DBG_RETURN(FAIL);
}
/* }}} */
/* {{{ mysqlnd_stmt_execute_parse_response */
static enum_func_status
mysqlnd_stmt_execute_parse_response(MYSQLND_STMT * const s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
enum_func_status ret;
MYSQLND * conn;
DBG_ENTER("mysqlnd_stmt_execute_parse_response");
if (!stmt || !stmt->conn) {
DBG_RETURN(FAIL);
}
conn = stmt->conn;
CONN_SET_STATE(conn, CONN_QUERY_SENT);
ret = mysqlnd_query_read_result_set_header(stmt->conn, s TSRMLS_CC);
if (ret == FAIL) {
stmt->error_info = conn->error_info;
stmt->upsert_status.affected_rows = conn->upsert_status.affected_rows;
if (CONN_GET_STATE(conn) == CONN_QUIT_SENT) {
/* close the statement here, the connection has been closed */
}
stmt->state = MYSQLND_STMT_PREPARED;
stmt->send_types_to_server = 1;
} else {
/*
stmt->send_types_to_server has already been set to 0 in
mysqlnd_stmt_execute_generate_request / mysqlnd_stmt_execute_store_params
In case there is a situation in which binding was done for integer and the
value is > LONG_MAX or < LONG_MIN, there is string conversion and we have
to resend the types. Next execution will also need to resend the type.
*/
SET_EMPTY_ERROR(stmt->error_info);
SET_EMPTY_ERROR(stmt->conn->error_info);
stmt->upsert_status = conn->upsert_status;
stmt->state = MYSQLND_STMT_EXECUTED;
if (conn->last_query_type == QUERY_UPSERT || conn->last_query_type == QUERY_LOAD_LOCAL) {
DBG_INF("PASS");
DBG_RETURN(PASS);
}
stmt->result->type = MYSQLND_RES_PS_BUF;
if (!stmt->result->conn) {
/*
For SHOW we don't create (bypasses PS in server)
a result set at prepare and thus a connection was missing
*/
stmt->result->conn = stmt->conn->m->get_reference(stmt->conn TSRMLS_CC);
}
/* Update stmt->field_count as SHOW sets it to 0 at prepare */
stmt->field_count = stmt->result->field_count = conn->field_count;
stmt->result->lengths = NULL;
if (stmt->field_count) {
stmt->state = MYSQLND_STMT_WAITING_USE_OR_STORE;
/*
We need to set this because the user might not call
use_result() or store_result() and we should be able to scrap the
data on the line, if he just decides to close the statement.
*/
DBG_INF_FMT("server_status=%u cursor=%u", stmt->upsert_status.server_status,
stmt->upsert_status.server_status & SERVER_STATUS_CURSOR_EXISTS);
if (stmt->upsert_status.server_status & SERVER_STATUS_CURSOR_EXISTS) {
DBG_INF("cursor exists");
stmt->cursor_exists = TRUE;
CONN_SET_STATE(conn, CONN_READY);
/* Only cursor read */
stmt->default_rset_handler = s->m->use_result;
DBG_INF("use_result");
} else if (stmt->flags & CURSOR_TYPE_READ_ONLY) {
DBG_INF("asked for cursor but got none");
/*
We have asked for CURSOR but got no cursor, because the condition
above is not fulfilled. Then...
This is a single-row result set, a result set with no rows, EXPLAIN,
SHOW VARIABLES, or some other command which either a) bypasses the
cursors framework in the server and writes rows directly to the
network or b) is more efficient if all (few) result set rows are
precached on client and server's resources are freed.
*/
/* preferred is buffered read */
stmt->default_rset_handler = s->m->store_result;
DBG_INF("store_result");
} else {
DBG_INF("no cursor");
/* preferred is unbuffered read */
stmt->default_rset_handler = s->m->use_result;
DBG_INF("use_result");
}
}
}
#ifndef MYSQLND_DONT_SKIP_OUT_PARAMS_RESULTSET
if (stmt->upsert_status.server_status & SERVER_PS_OUT_PARAMS) {
s->m->free_stmt_content(s TSRMLS_CC);
DBG_INF("PS OUT Variable RSet, skipping");
/* OUT params result set. Skip for now to retain compatibility */
ret = mysqlnd_stmt_execute_parse_response(s TSRMLS_CC);
}
#endif
DBG_INF(ret == PASS? "PASS":"FAIL");
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_stmt::execute */
static enum_func_status
MYSQLND_METHOD(mysqlnd_stmt, execute)(MYSQLND_STMT * const s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
enum_func_status ret;
MYSQLND * conn;
zend_uchar *request = NULL;
size_t request_len;
zend_bool free_request;
DBG_ENTER("mysqlnd_stmt::execute");
if (!stmt || !stmt->conn) {
DBG_RETURN(FAIL);
}
conn = stmt->conn;
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
SET_ERROR_AFF_ROWS(stmt);
SET_ERROR_AFF_ROWS(stmt->conn);
if (stmt->result && stmt->state >= MYSQLND_STMT_PREPARED && stmt->field_count) {
/*
We don need to copy the data from the buffers which we will clean.
Because it has already been copied. See
#ifndef WE_DONT_COPY_IN_BUFFERED_AND_UNBUFFERED_BECAUSEOF_IS_REF
*/
#ifdef WE_DONT_COPY_IN_BUFFERED_AND_UNBUFFERED_BECAUSEOF_IS_REF
if (stmt->result_bind &&
stmt->result_zvals_separated_once == TRUE &&
stmt->state >= MYSQLND_STMT_USER_FETCHING)
{
/*
We need to copy the data from the buffers which we will clean.
The bound variables point to them only if the user has started
to fetch data (MYSQLND_STMT_USER_FETCHING).
We need to check 'result_zvals_separated_once' or we will leak
in the following scenario
prepare("select 1 from dual");
execute();
fetch(); <-- no binding, but that's not a problem
bind_result();
execute(); <-- here we will leak because we separate without need
*/
unsigned int i;
for (i = 0; i < stmt->field_count; i++) {
if (stmt->result_bind[i].bound == TRUE) {
zval_copy_ctor(stmt->result_bind[i].zv);
}
}
}
#endif
/*
If right after execute() we have to call the appropriate
use_result() or store_result() and clean.
*/
if (stmt->state == MYSQLND_STMT_WAITING_USE_OR_STORE) {
DBG_INF("fetching result set header");
/* Do implicit use_result and then flush the result */
stmt->default_rset_handler = s->m->use_result;
stmt->default_rset_handler(s TSRMLS_CC);
}
if (stmt->state > MYSQLND_STMT_WAITING_USE_OR_STORE) {
DBG_INF("skipping result");
/* Flush if anything is left and unbuffered set */
stmt->result->m.skip_result(stmt->result TSRMLS_CC);
}
if (stmt->state > MYSQLND_STMT_PREPARED) {
/* As the buffers have been freed, we should go back to PREPARED */
stmt->state = MYSQLND_STMT_PREPARED;
}
/*
Executed, but the user hasn't started to fetch
This will clean also the metadata, but after the EXECUTE call we will
have it again.
*/
stmt->result->m.free_result_buffers(stmt->result TSRMLS_CC);
} else if (stmt->state < MYSQLND_STMT_PREPARED) {
/* Only initted - error */
SET_CLIENT_ERROR(conn->error_info, CR_COMMANDS_OUT_OF_SYNC, UNKNOWN_SQLSTATE,
mysqlnd_out_of_sync);
SET_STMT_ERROR(stmt, CR_COMMANDS_OUT_OF_SYNC, UNKNOWN_SQLSTATE, mysqlnd_out_of_sync);
DBG_INF("FAIL");
DBG_RETURN(FAIL);
}
if (stmt->param_count) {
unsigned int i, not_bound = 0;
if (!stmt->param_bind) {
SET_STMT_ERROR(stmt, CR_PARAMS_NOT_BOUND, UNKNOWN_SQLSTATE,
"No data supplied for parameters in prepared statement");
DBG_INF("FAIL");
DBG_RETURN(FAIL);
}
for (i = 0; i < stmt->param_count; i++) {
if (stmt->param_bind[i].zv == NULL) {
not_bound++;
}
}
if (not_bound) {
char * msg;
spprintf(&msg, 0, "No data supplied for %u parameter%s in prepared statement",
not_bound, not_bound>1 ?"s":"");
SET_STMT_ERROR(stmt, CR_PARAMS_NOT_BOUND, UNKNOWN_SQLSTATE, msg);
if (msg) {
efree(msg); /* allocated by spprintf */
}
DBG_INF("FAIL");
DBG_RETURN(FAIL);
}
}
ret = s->m->generate_execute_request(s, &request, &request_len, &free_request TSRMLS_CC);
if (ret == PASS) {
/* support for buffer types should be added here ! */
ret = stmt->conn->m->simple_command(stmt->conn, COM_STMT_EXECUTE, (char *)request, request_len,
PROT_LAST /* we will handle the response packet*/,
FALSE, FALSE TSRMLS_CC);
} else {
SET_STMT_ERROR(stmt, CR_UNKNOWN_ERROR, UNKNOWN_SQLSTATE, "Couldn't generate the request. Possibly OOM.");
}
if (free_request) {
mnd_efree(request);
}
if (ret == FAIL) {
stmt->error_info = conn->error_info;
DBG_INF("FAIL");
DBG_RETURN(FAIL);
}
stmt->execute_count++;
ret = s->m->parse_execute_response(s TSRMLS_CC);
DBG_INF_FMT("server_status=%u cursor=%u", stmt->upsert_status.server_status, stmt->upsert_status.server_status & SERVER_STATUS_CURSOR_EXISTS);
if (ret == PASS && conn->last_query_type == QUERY_UPSERT && stmt->upsert_status.affected_rows) {
MYSQLND_INC_CONN_STATISTIC_W_VALUE(conn->stats, STAT_ROWS_AFFECTED_PS, stmt->upsert_status.affected_rows);
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_fetch_stmt_row_buffered */
enum_func_status
mysqlnd_fetch_stmt_row_buffered(MYSQLND_RES *result, void *param, unsigned int flags, zend_bool *fetched_anything TSRMLS_DC)
{
MYSQLND_STMT * s = (MYSQLND_STMT *) param;
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND_RES_BUFFERED *set = result->stored_data;
unsigned int field_count = result->meta->field_count;
DBG_ENTER("mysqlnd_fetch_stmt_row_buffered");
*fetched_anything = FALSE;
DBG_INF_FMT("stmt=%lu", stmt != NULL ? stmt->stmt_id : 0L);
/* If we haven't read everything */
if (set->data_cursor &&
(set->data_cursor - set->data) < (set->row_count * field_count))
{
/* The user could have skipped binding - don't crash*/
if (stmt->result_bind) {
unsigned int i;
MYSQLND_RES_METADATA * meta = result->meta;
zval **current_row = set->data_cursor;
if (NULL == current_row[0]) {
uint64_t row_num = (set->data_cursor - set->data) / field_count;
enum_func_status rc = result->m.row_decoder(set->row_buffers[row_num],
current_row,
meta->field_count,
meta->fields,
result->stored_data->persistent,
result->conn->options.numeric_and_datetime_as_unicode,
result->conn->options.int_and_float_native,
result->conn->stats TSRMLS_CC);
if (PASS != rc) {
DBG_RETURN(FAIL);
}
set->initialized_rows++;
if (stmt->update_max_length) {
for (i = 0; i < result->field_count; i++) {
/*
NULL fields are 0 length, 0 is not more than 0
String of zero size, definitely can't be the next max_length.
Thus for NULL and zero-length we are quite efficient.
*/
if (Z_TYPE_P(current_row[i]) >= IS_STRING) {
unsigned long len = Z_STRLEN_P(current_row[i]);
if (meta->fields[i].max_length < len) {
meta->fields[i].max_length = len;
}
}
}
}
}
for (i = 0; i < result->field_count; i++) {
/* Clean what we copied last time */
#ifndef WE_DONT_COPY_IN_BUFFERED_AND_UNBUFFERED_BECAUSEOF_IS_REF
if (stmt->result_bind[i].zv) {
zval_dtor(stmt->result_bind[i].zv);
}
#endif
/* copy the type */
if (stmt->result_bind[i].bound == TRUE) {
DBG_INF_FMT("i=%u type=%u", i, Z_TYPE_P(current_row[i]));
if (Z_TYPE_P(current_row[i]) != IS_NULL) {
/*
Copy the value.
Pre-condition is that the zvals in the result_bind buffer
have been ZVAL_NULL()-ed or to another simple type
(int, double, bool but not string). Because of the reference
counting the user can't delete the strings the variables point to.
*/
Z_TYPE_P(stmt->result_bind[i].zv) = Z_TYPE_P(current_row[i]);
stmt->result_bind[i].zv->value = current_row[i]->value;
#ifndef WE_DONT_COPY_IN_BUFFERED_AND_UNBUFFERED_BECAUSEOF_IS_REF
zval_copy_ctor(stmt->result_bind[i].zv);
#endif
} else {
ZVAL_NULL(stmt->result_bind[i].zv);
}
}
}
}
set->data_cursor += field_count;
*fetched_anything = TRUE;
/* buffered result sets don't have a connection */
MYSQLND_INC_GLOBAL_STATISTIC(STAT_ROWS_FETCHED_FROM_CLIENT_PS_BUF);
DBG_INF("row fetched");
} else {
set->data_cursor = NULL;
DBG_INF("no more data");
}
DBG_INF("PASS");
DBG_RETURN(PASS);
}
/* }}} */
/* {{{ mysqlnd_stmt_fetch_row_unbuffered */
static enum_func_status
mysqlnd_stmt_fetch_row_unbuffered(MYSQLND_RES *result, void *param, unsigned int flags, zend_bool *fetched_anything TSRMLS_DC)
{
enum_func_status ret;
MYSQLND_STMT * s = (MYSQLND_STMT *) param;
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND_PACKET_ROW * row_packet;
DBG_ENTER("mysqlnd_stmt_fetch_row_unbuffered");
*fetched_anything = FALSE;
if (result->unbuf->eof_reached) {
/* No more rows obviously */
DBG_INF("eof reached");
DBG_RETURN(PASS);
}
if (CONN_GET_STATE(result->conn) != CONN_FETCHING_DATA) {
SET_CLIENT_ERROR(result->conn->error_info, CR_COMMANDS_OUT_OF_SYNC,
UNKNOWN_SQLSTATE, mysqlnd_out_of_sync);
DBG_ERR("command out of sync");
DBG_RETURN(FAIL);
}
if (!(row_packet = result->row_packet)) {
DBG_RETURN(FAIL);
}
/* Let the row packet fill our buffer and skip additional malloc + memcpy */
row_packet->skip_extraction = stmt && stmt->result_bind? FALSE:TRUE;
/*
If we skip rows (stmt == NULL || stmt->result_bind == NULL) we have to
result->m.unbuffered_free_last_data() before it. The function returns always true.
*/
if (PASS == (ret = PACKET_READ(row_packet, result->conn)) && !row_packet->eof) {
unsigned int i, field_count = result->field_count;
if (!row_packet->skip_extraction) {
result->m.unbuffered_free_last_data(result TSRMLS_CC);
DBG_INF("extracting data");
result->unbuf->last_row_data = row_packet->fields;
result->unbuf->last_row_buffer = row_packet->row_buffer;
row_packet->fields = NULL;
row_packet->row_buffer = NULL;
if (PASS != result->m.row_decoder(result->unbuf->last_row_buffer,
result->unbuf->last_row_data,
row_packet->field_count,
row_packet->fields_metadata,
FALSE,
result->conn->options.numeric_and_datetime_as_unicode,
result->conn->options.int_and_float_native,
result->conn->stats TSRMLS_CC))
{
DBG_RETURN(FAIL);
}
for (i = 0; i < field_count; i++) {
if (stmt->result_bind[i].bound == TRUE) {
zval *data = result->unbuf->last_row_data[i];
/*
stmt->result_bind[i].zv has been already destructed
in result->m.unbuffered_free_last_data()
*/
#ifndef WE_DONT_COPY_IN_BUFFERED_AND_UNBUFFERED_BECAUSEOF_IS_REF
zval_dtor(stmt->result_bind[i].zv);
#endif
if (IS_NULL != (Z_TYPE_P(stmt->result_bind[i].zv) = Z_TYPE_P(data)) ) {
if (
(Z_TYPE_P(data) == IS_STRING
#if MYSQLND_UNICODE
|| Z_TYPE_P(data) == IS_UNICODE
#endif
)
&& (result->meta->fields[i].max_length < (unsigned long) Z_STRLEN_P(data)))
{
result->meta->fields[i].max_length = Z_STRLEN_P(data);
}
stmt->result_bind[i].zv->value = data->value;
/* copied data, thus also the ownership. Thus null data */
ZVAL_NULL(data);
}
}
}
MYSQLND_INC_CONN_STATISTIC(stmt->conn->stats, STAT_ROWS_FETCHED_FROM_CLIENT_PS_UNBUF);
} else {
DBG_INF("skipping extraction");
/*
Data has been allocated and usually result->m.unbuffered_free_last_data()
frees it but we can't call this function as it will cause problems with
the bound variables. Thus we need to do part of what it does or Zend will
report leaks.
*/
row_packet->row_buffer->free_chunk(row_packet->row_buffer TSRMLS_CC);
row_packet->row_buffer = NULL;
}
result->unbuf->row_count++;
*fetched_anything = TRUE;
} else if (ret == FAIL) {
if (row_packet->error_info.error_no) {
stmt->conn->error_info = row_packet->error_info;
stmt->error_info = row_packet->error_info;
}
CONN_SET_STATE(result->conn, CONN_READY);
result->unbuf->eof_reached = TRUE; /* so next time we won't get an error */
} else if (row_packet->eof) {
DBG_INF("EOF");
/* Mark the connection as usable again */
result->unbuf->eof_reached = TRUE;
result->conn->upsert_status.warning_count = row_packet->warning_count;
result->conn->upsert_status.server_status = row_packet->server_status;
/*
result->row_packet will be cleaned when
destroying the result object
*/
if (result->conn->upsert_status.server_status & SERVER_MORE_RESULTS_EXISTS) {
CONN_SET_STATE(result->conn, CONN_NEXT_RESULT_PENDING);
} else {
CONN_SET_STATE(result->conn, CONN_READY);
}
}
DBG_INF_FMT("ret=%s fetched_anything=%u", ret == PASS? "PASS":"FAIL", *fetched_anything);
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_stmt::use_result */
static MYSQLND_RES *
MYSQLND_METHOD(mysqlnd_stmt, use_result)(MYSQLND_STMT * s TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND_RES *result;
MYSQLND * conn;
DBG_ENTER("mysqlnd_stmt::use_result");
if (!stmt || !stmt->conn || !stmt->result) {
DBG_RETURN(NULL);
}
DBG_INF_FMT("stmt=%lu", stmt->stmt_id);
conn = stmt->conn;
if (!stmt->field_count ||
(!stmt->cursor_exists && CONN_GET_STATE(conn) != CONN_FETCHING_DATA) ||
(stmt->cursor_exists && CONN_GET_STATE(conn) != CONN_READY) ||
(stmt->state != MYSQLND_STMT_WAITING_USE_OR_STORE))
{
SET_CLIENT_ERROR(conn->error_info, CR_COMMANDS_OUT_OF_SYNC,
UNKNOWN_SQLSTATE, mysqlnd_out_of_sync);
DBG_ERR("command out of sync");
DBG_RETURN(NULL);
}
SET_EMPTY_ERROR(stmt->error_info);
MYSQLND_INC_CONN_STATISTIC(stmt->conn->stats, STAT_PS_UNBUFFERED_SETS);
result = stmt->result;
DBG_INF_FMT("%scursor exists", stmt->cursor_exists? "":"no ");
result->m.use_result(stmt->result, TRUE TSRMLS_CC);
result->m.fetch_row = stmt->cursor_exists? mysqlnd_fetch_stmt_row_cursor:
mysqlnd_stmt_fetch_row_unbuffered;
stmt->state = MYSQLND_STMT_USE_OR_STORE_CALLED;
DBG_INF_FMT("%p", result);
DBG_RETURN(result);
}
/* }}} */