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mysqlnd_ps.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_result_meta.h"
#include "mysqlnd_statistics.h"
#include "mysqlnd_debug.h"
#include "mysqlnd_block_alloc.h"
#include "mysqlnd_ext_plugin.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";
/* 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);
enum_func_status mysqlnd_stmt_execute_batch_generate_request(MYSQLND_STMT * const s, zend_uchar ** request, size_t *request_len, zend_bool * free_buffer);
static void mysqlnd_stmt_separate_result_bind(MYSQLND_STMT * const stmt);
static void mysqlnd_stmt_separate_one_result_bind(MYSQLND_STMT * const stmt, unsigned int param_no);
/* {{{ mysqlnd_stmt::store_result */
static MYSQLND_RES *
MYSQLND_METHOD(mysqlnd_stmt, store_result)(MYSQLND_STMT * const s)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
enum_func_status ret;
MYSQLND_CONN_DATA * conn;
MYSQLND_RES * result;
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));
}
/* 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(*conn->error_info);
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_PS_BUFFERED_SETS);
result = stmt->result;
result->type = MYSQLND_RES_PS_BUF;
/* result->m.row_decoder = php_mysqlnd_rowp_read_binary_protocol; */
result->stored_data = (MYSQLND_RES_BUFFERED *) mysqlnd_result_buffered_zval_init(result->field_count, TRUE, result->persistent);
if (!result->stored_data) {
SET_OOM_ERROR(*conn->error_info);
DBG_RETURN(NULL);
}
ret = result->m.store_result_fetch_data(conn, result, result->meta, &result->stored_data->row_buffers, TRUE);
result->stored_data->m.fetch_row = mysqlnd_stmt_fetch_row_buffered;
if (PASS == ret) {
/* Overflow ? */
if (result->stored_data->type == MYSQLND_BUFFERED_TYPE_ZVAL) {
MYSQLND_RES_BUFFERED_ZVAL * set = (MYSQLND_RES_BUFFERED_ZVAL *) result->stored_data;
if (result->stored_data->row_count) {
/* don't try to allocate more than possible - mnd_XXalloc expects size_t, and it can have narrower range than uint64_t */
if (result->stored_data->row_count * result->meta->field_count * sizeof(zval *) > SIZE_MAX) {
SET_OOM_ERROR(*conn->error_info);
DBG_RETURN(NULL);
}
/* if pecalloc is used valgrind barks gcc version 4.3.1 20080507 (prerelease) [gcc-4_3-branch revision 135036] (SUSE Linux) */
set->data = mnd_emalloc((size_t)(result->stored_data->row_count * result->meta->field_count * sizeof(zval)));
if (!set->data) {
SET_OOM_ERROR(*conn->error_info);
DBG_RETURN(NULL);
}
memset(set->data, 0, (size_t)(result->stored_data->row_count * result->meta->field_count * sizeof(zval)));
}
/* Position at the first row */
set->data_cursor = set->data;
} else if (result->stored_data->type == MYSQLND_BUFFERED_TYPE_ZVAL) {
/*TODO*/
}
/* 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 {
COPY_CLIENT_ERROR(*conn->error_info, result->stored_data->error_info);
stmt->result->m.free_result_contents(stmt->result);
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)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND_CONN_DATA * 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));
}
/* 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(*conn->error_info);
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_BUFFERED_SETS);
do {
result = conn->m->result_init(stmt->result->field_count, stmt->persistent);
if (!result) {
SET_OOM_ERROR(*conn->error_info);
break;
}
result->meta = stmt->result->meta->m->clone_metadata(stmt->result->meta, FALSE);
if (!result->meta) {
SET_OOM_ERROR(*conn->error_info);
break;
}
if ((result = result->m.store_result(result, conn, MYSQLND_STORE_PS | MYSQLND_STORE_NO_COPY))) {
stmt->upsert_status->affected_rows = result->stored_data->row_count;
stmt->state = MYSQLND_STMT_PREPARED;
result->type = MYSQLND_RES_PS_BUF;
} else {
COPY_CLIENT_ERROR(*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);
}
DBG_RETURN(NULL);
}
/* }}} */
/* {{{ mysqlnd_stmt::more_results */
static zend_bool
MYSQLND_METHOD(mysqlnd_stmt, more_results)(const MYSQLND_STMT * s)
{
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->m->get_server_status(stmt->conn) & SERVER_MORE_RESULTS_EXISTS))?
TRUE:
FALSE);
}
/* }}} */
/* {{{ mysqlnd_stmt::next_result */
static enum_func_status
MYSQLND_METHOD(mysqlnd_stmt, next_result)(MYSQLND_STMT * s)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND_CONN_DATA * 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);
/* Free space for next result */
s->m->free_stmt_result(s);
{
enum_func_status ret = s->m->parse_execute_response(s);
DBG_RETURN(ret);
}
}
/* }}} */
/* {{{ mysqlnd_stmt_skip_metadata */
static enum_func_status
mysqlnd_stmt_skip_metadata(MYSQLND_STMT * s)
{
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);
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)
{
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);
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) {
COPY_CLIENT_ERROR(*stmt->error_info, prepare_resp->error_info);
COPY_CLIENT_ERROR(*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;
stmt->upsert_status->affected_rows = 0; /* be like libmysql */
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)
{
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);
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);
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)
{
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);
DBG_INF_FMT("query=%s", query);
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);
}
/* No 'else' here please :) */
if (stmt->state > MYSQLND_STMT_WAITING_USE_OR_STORE && stmt->result) {
stmt->result->m.skip_result(stmt->result);
}
/*
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);
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, (const zend_uchar *) query, query_len, PROT_LAST, FALSE, TRUE) ||
FAIL == mysqlnd_stmt_read_prepare_response(s_to_prepare))
{
goto fail;
}
if (stmt_to_prepare->param_count) {
if (FAIL == mysqlnd_stmt_skip_metadata(s_to_prepare) ||
FAIL == mysqlnd_stmt_prepare_read_eof(s_to_prepare))
{
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);
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);
result->type = MYSQLND_RES_PS_BUF;
if (FAIL == result->m.read_result_metadata(result, stmt_to_prepare->conn) ||
FAIL == mysqlnd_stmt_prepare_read_eof(s_to_prepare))
{
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);
}
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);
}
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)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
enum_func_status ret;
MYSQLND_CONN_DATA * 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);
if (ret == FAIL) {
COPY_CLIENT_ERROR(*stmt->error_info, *conn->error_info);
memset(stmt->upsert_status, 0, sizeof(*stmt->upsert_status));
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; /* copy 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);
}
/* Update stmt->field_count as SHOW sets it to 0 at prepare */
stmt->field_count = stmt->result->field_count = conn->field_count;
if (stmt->result->stored_data) {
stmt->result->stored_data->lengths = NULL;
} else if (stmt->result->unbuf) {
stmt->result->unbuf->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);
DBG_INF("PS OUT Variable RSet, skipping");
/* OUT params result set. Skip for now to retain compatibility */
ret = mysqlnd_stmt_execute_parse_response(s);
}
#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)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
enum_func_status ret;
MYSQLND_CONN_DATA * 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 *result = &stmt->result_bind[i].zv;
ZVAL_DEREF(result);
Z_TRY_ADDREF_P(result);
}
}
}
#endif
s->m->flush(s);
/*
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);
stmt->state = MYSQLND_STMT_PREPARED;
} 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 (Z_ISUNDEF(stmt->param_bind[i].zv)) {
not_bound++;
}
}
if (not_bound) {
char * msg;
mnd_sprintf(&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) {
mnd_sprintf_free(msg);
}
DBG_INF("FAIL");
DBG_RETURN(FAIL);
}
}
ret = s->m->generate_execute_request(s, &request, &request_len, &free_request);
if (ret == PASS) {
/* support for buffer types should be added here ! */
ret = stmt->conn->m->simple_command(stmt->conn, COM_STMT_EXECUTE, request, request_len,
PROT_LAST /* we will handle the response packet*/,
FALSE, FALSE);
} 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) {
COPY_CLIENT_ERROR(*stmt->error_info, *conn->error_info);
DBG_INF("FAIL");
DBG_RETURN(FAIL);
}
stmt->execute_count++;
ret = s->m->parse_execute_response(s);
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_stmt_fetch_row_buffered */
enum_func_status
mysqlnd_stmt_fetch_row_buffered(MYSQLND_RES * result, void * param, unsigned int flags, zend_bool * fetched_anything)
{
MYSQLND_STMT * s = (MYSQLND_STMT *) param;
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
const MYSQLND_RES_METADATA * const meta = result->meta;
unsigned int field_count = meta->field_count;
DBG_ENTER("mysqlnd_stmt_fetch_row_buffered");
*fetched_anything = FALSE;
DBG_INF_FMT("stmt=%lu", stmt != NULL ? stmt->stmt_id : 0L);
/* If we haven't read everything */
if (result->stored_data->type == MYSQLND_BUFFERED_TYPE_ZVAL) {
MYSQLND_RES_BUFFERED_ZVAL * set = (MYSQLND_RES_BUFFERED_ZVAL *) result->stored_data;
if (set->data_cursor &&
(set->data_cursor - set->data) < (result->stored_data->row_count * field_count))
{
/* The user could have skipped binding - don't crash*/
if (stmt->result_bind) {
unsigned int i;
zval *current_row = set->data_cursor;
if (Z_ISUNDEF(current_row[0])) {
uint64_t row_num = (set->data_cursor - set->data) / field_count;
enum_func_status rc = result->stored_data->m.row_decoder(result->stored_data->row_buffers[row_num],
current_row,
meta->field_count,
meta->fields,
result->conn->options->int_and_float_native,
result->conn->stats);
if (PASS != rc) {
DBG_RETURN(FAIL);
}
result->stored_data->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(current_row[i]) == IS_STRING) {
zend_ulong len = Z_STRLEN(current_row[i]);
if (meta->fields[i].max_length < len) {
meta->fields[i].max_length = len;
}
}
}
}
}
for (i = 0; i < result->field_count; i++) {
zval *result = &stmt->result_bind[i].zv;
ZVAL_DEREF(result);
/* Clean what we copied last time */
#ifndef WE_DONT_COPY_IN_BUFFERED_AND_UNBUFFERED_BECAUSEOF_IS_REF
zval_dtor(result);
#endif
/* copy the type */
if (stmt->result_bind[i].bound == TRUE) {
DBG_INF_FMT("i=%u type=%u", i, Z_TYPE(current_row[i]));
if (Z_TYPE(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.
*/
ZVAL_COPY_VALUE(result, ¤t_row[i]);
#ifndef WE_DONT_COPY_IN_BUFFERED_AND_UNBUFFERED_BECAUSEOF_IS_REF
Z_TRY_ADDREF_P(result);
#endif
} else {
ZVAL_NULL(result);
}
}
}
}
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");
}
} else if (result->stored_data->type == MYSQLND_BUFFERED_TYPE_C) {
/*TODO*/
}
DBG_INF("PASS");
DBG_RETURN(PASS);
}
/* }}} */
/* {{{ mysqlnd_stmt_fetch_row_unbuffered */
enum_func_status
mysqlnd_stmt_fetch_row_unbuffered(MYSQLND_RES * result, void * param, unsigned int flags, zend_bool * fetched_anything)
{
enum_func_status ret;
MYSQLND_STMT * s = (MYSQLND_STMT *) param;
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND_PACKET_ROW * row_packet;
const MYSQLND_RES_METADATA * const meta = result->meta;
DBG_ENTER("mysqlnd_stmt_fetch_row_unbuffered");
*fetched_anything = FALSE;
if (result->unbuf->eof_reached) {
/* No more rows obviously */
DBG_INF("EOF already 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->unbuf->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->unbuf->m.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->unbuf->m.free_last_data(result->unbuf, result->conn? result->conn->stats : NULL);
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->unbuf->m.row_decoder(result->unbuf->last_row_buffer,
result->unbuf->last_row_data,
row_packet->field_count,
row_packet->fields_metadata,
result->conn->options->int_and_float_native,
result->conn->stats))
{
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];
zval *result = &stmt->result_bind[i].zv;
ZVAL_DEREF(result);
/*
stmt->result_bind[i].zv has been already destructed
in result->unbuf->m.free_last_data()
*/
#ifndef WE_DONT_COPY_IN_BUFFERED_AND_UNBUFFERED_BECAUSEOF_IS_REF
zval_dtor(result);
#endif
if (!Z_ISNULL_P(data)) {
if ((Z_TYPE_P(data) == IS_STRING) &&
(meta->fields[i].max_length < (zend_ulong) Z_STRLEN_P(data))) {
meta->fields[i].max_length = Z_STRLEN_P(data);
}
ZVAL_COPY_VALUE(result, data);
/* 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->unbuf->m.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);
row_packet->row_buffer = NULL;
}
result->unbuf->row_count++;
*fetched_anything = TRUE;
} else if (ret == FAIL) {
if (row_packet->error_info.error_no) {
COPY_CLIENT_ERROR(*stmt->conn->error_info, row_packet->error_info);
COPY_CLIENT_ERROR(*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;
memset(result->conn->upsert_status, 0, sizeof(*result->conn->upsert_status));
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)
{
MYSQLND_STMT_DATA * stmt = s? s->data:NULL;
MYSQLND_RES * result;
MYSQLND_CONN_DATA * 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;
result->m.use_result(stmt->result, TRUE);
result->unbuf->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);