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mysqlnd_result.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) 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]> |
+----------------------------------------------------------------------+
*/
#include "php.h"
#include "mysqlnd.h"
#include "mysqlnd_wireprotocol.h"
#include "mysqlnd_block_alloc.h"
#include "mysqlnd_connection.h"
#include "mysqlnd_priv.h"
#include "mysqlnd_result.h"
#include "mysqlnd_result_meta.h"
#include "mysqlnd_statistics.h"
#include "mysqlnd_debug.h"
#include "mysqlnd_ext_plugin.h"
/* {{{ mysqlnd_result_buffered_zval::initialize_result_set_rest */
static enum_func_status
MYSQLND_METHOD(mysqlnd_result_buffered_zval, initialize_result_set_rest)(MYSQLND_RES_BUFFERED * const result,
MYSQLND_RES_METADATA * const meta,
MYSQLND_STATS * stats,
zend_bool int_and_float_native)
{
enum_func_status ret = PASS;
const unsigned int field_count = meta->field_count;
const uint64_t row_count = result->row_count;
zval *data_begin = ((MYSQLND_RES_BUFFERED_ZVAL *) result)->data;
zval *data_cursor = data_begin;
DBG_ENTER("mysqlnd_result_buffered_zval::initialize_result_set_rest");
if (!data_cursor || row_count == result->initialized_rows) {
DBG_RETURN(ret);
}
while ((data_cursor - data_begin) < (int)(row_count * field_count)) {
if (Z_ISUNDEF(data_cursor[0])) {
unsigned int i;
const size_t current_row_num = (data_cursor - data_begin) / field_count;
enum_func_status rc = result->m.row_decoder(&result->row_buffers[current_row_num],
data_cursor,
field_count,
meta->fields,
int_and_float_native,
stats);
if (rc != PASS) {
ret = FAIL;
break;
}
++result->initialized_rows;
for (i = 0; i < 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(data_cursor[i]) == IS_STRING) {
const size_t len = Z_STRLEN(data_cursor[i]);
if (meta->fields[i].max_length < len) {
meta->fields[i].max_length = len;
}
}
}
}
data_cursor += field_count;
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_result_buffered_c::initialize_result_set_rest */
static enum_func_status
MYSQLND_METHOD(mysqlnd_result_buffered_c, initialize_result_set_rest)(MYSQLND_RES_BUFFERED * const result,
MYSQLND_RES_METADATA * const meta,
MYSQLND_STATS * stats,
const zend_bool int_and_float_native)
{
unsigned int row, field;
enum_func_status ret = PASS;
const unsigned int field_count = meta->field_count;
const uint64_t row_count = result->row_count;
enum_func_status rc;
DBG_ENTER("mysqlnd_result_buffered_c::initialize_result_set_rest");
if (result->initialized_rows < row_count) {
zend_uchar * initialized = ((MYSQLND_RES_BUFFERED_C *) result)->initialized;
zval * current_row = mnd_emalloc(field_count * sizeof(zval));
if (!current_row) {
DBG_RETURN(FAIL);
}
for (row = 0; row < result->row_count; row++) {
/* (row / 8) & the_bit_for_row*/
if (ZEND_BIT_TEST(initialized, row)) {
continue;
}
rc = result->m.row_decoder(&result->row_buffers[row], current_row, field_count, meta->fields, int_and_float_native, stats);
if (rc != PASS) {
ret = FAIL;
break;
}
result->initialized_rows++;
initialized[row >> 3] |= (1 << (row & 7));
for (field = 0; field < field_count; field++) {
/*
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[field]) == IS_STRING) {
const size_t len = Z_STRLEN(current_row[field]);
if (meta->fields[field].max_length < len) {
meta->fields[field].max_length = len;
}
}
zval_ptr_dtor_nogc(¤t_row[field]);
}
}
mnd_efree(current_row);
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_result_unbuffered::free_last_data */
static void
MYSQLND_METHOD(mysqlnd_result_unbuffered, free_last_data)(MYSQLND_RES_UNBUFFERED * unbuf, MYSQLND_STATS * const global_stats)
{
DBG_ENTER("mysqlnd_res::unbuffered_free_last_data");
if (!unbuf) {
DBG_VOID_RETURN;
}
DBG_INF_FMT("field_count=%u", unbuf->field_count);
if (unbuf->last_row_data) {
unsigned int i;
for (i = 0; i < unbuf->field_count; i++) {
zval_ptr_dtor_nogc(&(unbuf->last_row_data[i]));
}
/* Free last row's zvals */
mnd_efree(unbuf->last_row_data);
unbuf->last_row_data = NULL;
}
if (unbuf->last_row_buffer.ptr) {
DBG_INF("Freeing last row buffer");
/* Nothing points to this buffer now, free it */
unbuf->result_set_memory_pool->free_chunk(
unbuf->result_set_memory_pool, unbuf->last_row_buffer.ptr);
unbuf->last_row_buffer.ptr = NULL;
}
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_result_unbuffered::free_result */
static void
MYSQLND_METHOD(mysqlnd_result_unbuffered, free_result)(MYSQLND_RES_UNBUFFERED * const result, MYSQLND_STATS * const global_stats)
{
DBG_ENTER("mysqlnd_result_unbuffered, free_result");
result->m.free_last_data(result, global_stats);
/* must be free before because references the memory pool */
if (result->row_packet) {
PACKET_FREE(result->row_packet);
mnd_efree(result->row_packet);
result->row_packet = NULL;
}
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_result_buffered_zval::free_result */
static void
MYSQLND_METHOD(mysqlnd_result_buffered_zval, free_result)(MYSQLND_RES_BUFFERED_ZVAL * const set)
{
zval * data = set->data;
DBG_ENTER("mysqlnd_result_buffered_zval::free_result");
set->data = NULL; /* prevent double free if following loop is interrupted */
if (data) {
const unsigned int field_count = set->field_count;
int64_t row;
for (row = set->row_count - 1; row >= 0; row--) {
zval *current_row = data + row * field_count;
int64_t col;
if (current_row != NULL) {
for (col = field_count - 1; col >= 0; --col) {
zval_ptr_dtor_nogc(&(current_row[col]));
}
}
}
mnd_efree(data);
}
set->data_cursor = NULL;
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_result_buffered_c::free_result */
static void
MYSQLND_METHOD(mysqlnd_result_buffered_c, free_result)(MYSQLND_RES_BUFFERED_C * const set)
{
DBG_ENTER("mysqlnd_result_buffered_c::free_result");
mnd_efree(set->initialized);
set->initialized = NULL;
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_result_buffered::free_result */
static void
MYSQLND_METHOD(mysqlnd_result_buffered, free_result)(MYSQLND_RES_BUFFERED * const set)
{
DBG_ENTER("mysqlnd_result_buffered::free_result");
DBG_INF_FMT("Freeing "PRIu64" row(s)", set->row_count);
mysqlnd_error_info_free_contents(&set->error_info);
if (set->type == MYSQLND_BUFFERED_TYPE_ZVAL) {
MYSQLND_METHOD(mysqlnd_result_buffered_zval, free_result)((MYSQLND_RES_BUFFERED_ZVAL *) set);
} if (set->type == MYSQLND_BUFFERED_TYPE_C) {
MYSQLND_METHOD(mysqlnd_result_buffered_c, free_result)((MYSQLND_RES_BUFFERED_C *) set);
}
if (set->row_buffers) {
mnd_efree(set->row_buffers);
set->row_buffers = NULL;
}
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_res::free_result_buffers */
static void
MYSQLND_METHOD(mysqlnd_res, free_result_buffers)(MYSQLND_RES * result)
{
DBG_ENTER("mysqlnd_res::free_result_buffers");
DBG_INF_FMT("%s", result->unbuf? "unbuffered":(result->stored_data? "buffered":"unknown"));
if (result->meta) {
ZEND_ASSERT(zend_arena_contains(result->memory_pool->arena, result->meta));
result->meta->m->free_metadata(result->meta);
result->meta = NULL;
}
if (result->unbuf) {
result->unbuf->m.free_result(result->unbuf, result->conn? result->conn->stats : NULL);
result->unbuf = NULL;
} else if (result->stored_data) {
result->stored_data->m.free_result(result->stored_data);
result->stored_data = NULL;
}
mysqlnd_mempool_restore_state(result->memory_pool);
mysqlnd_mempool_save_state(result->memory_pool);
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_res::free_result_contents_internal */
static
void MYSQLND_METHOD(mysqlnd_res, free_result_contents_internal)(MYSQLND_RES * result)
{
DBG_ENTER("mysqlnd_res::free_result_contents_internal");
result->m.free_result_buffers(result);
if (result->conn) {
result->conn->m->free_reference(result->conn);
result->conn = NULL;
}
mysqlnd_mempool_destroy(result->memory_pool);
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_res::free_result_internal */
static
void MYSQLND_METHOD(mysqlnd_res, free_result_internal)(MYSQLND_RES * result)
{
DBG_ENTER("mysqlnd_res::free_result_internal");
result->m.skip_result(result);
result->m.free_result_contents(result);
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_res::read_result_metadata */
static enum_func_status
MYSQLND_METHOD(mysqlnd_res, read_result_metadata)(MYSQLND_RES * result, MYSQLND_CONN_DATA * conn)
{
DBG_ENTER("mysqlnd_res::read_result_metadata");
/*
Make it safe to call it repeatedly for PS -
better free and allocate a new because the number of field might change
(select *) with altered table. Also for statements which skip the PS
infrastructure!
*/
if (result->meta) {
result->meta->m->free_metadata(result->meta);
result->meta = NULL;
}
result->meta = result->m.result_meta_init(result, result->field_count);
if (!result->meta) {
SET_OOM_ERROR(conn->error_info);
DBG_RETURN(FAIL);
}
/* 1. Read all fields metadata */
/* It's safe to reread without freeing */
if (FAIL == result->meta->m->read_metadata(result->meta, conn, result)) {
result->meta->m->free_metadata(result->meta);
result->meta = NULL;
DBG_RETURN(FAIL);
}
/* COM_FIELD_LIST is broken and has premature EOF, thus we need to hack here and in mysqlnd_res_meta.c */
result->field_count = result->meta->field_count;
/*
2. Follows an EOF packet, which the client of mysqlnd_read_result_metadata()
should consume.
3. If there is a result set, it follows. The last packet will have 'eof' set
If PS, then no result set follows.
*/
DBG_RETURN(PASS);
}
/* }}} */
/* {{{ mysqlnd_query_read_result_set_header */
enum_func_status
mysqlnd_query_read_result_set_header(MYSQLND_CONN_DATA * conn, MYSQLND_STMT * s)
{
enum_func_status ret;
MYSQLND_STMT_DATA * stmt = s ? s->data : NULL;
MYSQLND_PACKET_RSET_HEADER rset_header;
MYSQLND_PACKET_EOF fields_eof;
DBG_ENTER("mysqlnd_query_read_result_set_header");
DBG_INF_FMT("stmt=%lu", stmt? stmt->stmt_id:0);
ret = FAIL;
do {
conn->payload_decoder_factory->m.init_rset_header_packet(&rset_header);
UPSERT_STATUS_SET_AFFECTED_ROWS_TO_ERROR(conn->upsert_status);
if (FAIL == (ret = PACKET_READ(conn, &rset_header))) {
if (conn->error_info->error_no != CR_SERVER_GONE_ERROR) {
php_error_docref(NULL, E_WARNING, "Error reading result set's header");
}
break;
}
if (rset_header.error_info.error_no) {
/*
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.
*/
UPSERT_STATUS_SET_SERVER_STATUS(conn->upsert_status, UPSERT_STATUS_GET_SERVER_STATUS(conn->upsert_status) & ~SERVER_MORE_RESULTS_EXISTS);
/*
This will copy the error code and the messages, as they
are buffers in the struct
*/
COPY_CLIENT_ERROR(conn->error_info, rset_header.error_info);
ret = FAIL;
DBG_ERR_FMT("error=%s", rset_header.error_info.error);
/* Return back from CONN_QUERY_SENT */
SET_CONNECTION_STATE(&conn->state, CONN_READY);
break;
}
conn->error_info->error_no = 0;
switch (rset_header.field_count) {
case MYSQLND_NULL_LENGTH: { /* LOAD DATA LOCAL INFILE */
zend_bool is_warning;
DBG_INF("LOAD DATA");
conn->last_query_type = QUERY_LOAD_LOCAL;
conn->field_count = 0; /* overwrite previous value, or the last value could be used and lead to bug#53503 */
SET_CONNECTION_STATE(&conn->state, CONN_SENDING_LOAD_DATA);
ret = mysqlnd_handle_local_infile(conn, rset_header.info_or_local_file.s, &is_warning);
SET_CONNECTION_STATE(&conn->state, (ret == PASS || is_warning == TRUE)? CONN_READY:CONN_QUIT_SENT);
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_NON_RSET_QUERY);
break;
}
case 0: /* UPSERT */
DBG_INF("UPSERT");
conn->last_query_type = QUERY_UPSERT;
conn->field_count = rset_header.field_count;
UPSERT_STATUS_RESET(conn->upsert_status);
UPSERT_STATUS_SET_WARNINGS(conn->upsert_status, rset_header.warning_count);
UPSERT_STATUS_SET_SERVER_STATUS(conn->upsert_status, rset_header.server_status);
UPSERT_STATUS_SET_AFFECTED_ROWS(conn->upsert_status, rset_header.affected_rows);
UPSERT_STATUS_SET_LAST_INSERT_ID(conn->upsert_status, rset_header.last_insert_id);
SET_NEW_MESSAGE(conn->last_message.s, conn->last_message.l,
rset_header.info_or_local_file.s, rset_header.info_or_local_file.l);
/* Result set can follow UPSERT statement, check server_status */
if (UPSERT_STATUS_GET_SERVER_STATUS(conn->upsert_status) & SERVER_MORE_RESULTS_EXISTS) {
SET_CONNECTION_STATE(&conn->state, CONN_NEXT_RESULT_PENDING);
} else {
SET_CONNECTION_STATE(&conn->state, CONN_READY);
}
ret = PASS;
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_NON_RSET_QUERY);
break;
default: do { /* Result set */
MYSQLND_RES * result;
enum_mysqlnd_collected_stats statistic = STAT_LAST;
DBG_INF("Result set pending");
SET_EMPTY_MESSAGE(conn->last_message.s, conn->last_message.l);
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_RSET_QUERY);
UPSERT_STATUS_RESET(conn->upsert_status);
/* restore after zeroing */
UPSERT_STATUS_SET_AFFECTED_ROWS_TO_ERROR(conn->upsert_status);
conn->last_query_type = QUERY_SELECT;
SET_CONNECTION_STATE(&conn->state, CONN_FETCHING_DATA);
/* PS has already allocated it */
conn->field_count = rset_header.field_count;
if (!stmt) {
result = conn->current_result = conn->m->result_init(rset_header.field_count);
} else {
if (!stmt->result) {
DBG_INF("This is 'SHOW'/'EXPLAIN'-like query.");
/*
This is 'SHOW'/'EXPLAIN'-like query. Current implementation of
prepared statements can't send result set metadata for these queries
on prepare stage. Read it now.
*/
result = stmt->result = conn->m->result_init(rset_header.field_count);
} else {
/*
Update result set metadata if it for some reason changed between
prepare and execute, i.e.:
- in case of 'SELECT ?' we don't know column type unless data was
supplied to mysql_stmt_execute, so updated column type is sent
now.
- if data dictionary changed between prepare and execute, for
example a table used in the query was altered.
Note, that now (4.1.3) we always send metadata in reply to
COM_STMT_EXECUTE (even if it is not necessary), so either this or
previous branch always works.
*/
}
result = stmt->result;
}
if (!result) {
SET_OOM_ERROR(conn->error_info);
ret = FAIL;
break;
}
if (FAIL == (ret = result->m.read_result_metadata(result, conn))) {
/* For PS, we leave them in Prepared state */
if (!stmt && conn->current_result) {
mnd_efree(conn->current_result);
conn->current_result = NULL;
}
DBG_ERR("Error occurred while reading metadata");
break;
}
/* Check for SERVER_STATUS_MORE_RESULTS if needed */
conn->payload_decoder_factory->m.init_eof_packet(&fields_eof);
if (FAIL == (ret = PACKET_READ(conn, &fields_eof))) {
DBG_ERR("Error occurred while reading the EOF packet");
result->m.free_result_contents(result);
if (!stmt) {
conn->current_result = NULL;
} else {
stmt->result = NULL;
/* XXX: This will crash, because we will null also the methods.
But seems it happens in extreme cases or doesn't. Should be fixed by exporting a function
(from mysqlnd_driver.c?) to do the reset.
This is done also in mysqlnd_ps.c
*/
memset(stmt, 0, sizeof(*stmt));
stmt->state = MYSQLND_STMT_INITTED;
}
} else {
DBG_INF_FMT("warnings=%u server_status=%u", fields_eof.warning_count, fields_eof.server_status);
UPSERT_STATUS_SET_WARNINGS(conn->upsert_status, fields_eof.warning_count);
/*
If SERVER_MORE_RESULTS_EXISTS is set then this is either MULTI_QUERY or a CALL()
The first packet after sending the query/com_execute has the bit set only
in this cases. Not sure why it's a needed but it marks that the whole stream
will include many result sets. What actually matters are the bits set at the end
of every result set (the EOF packet).
*/
UPSERT_STATUS_SET_SERVER_STATUS(conn->upsert_status, fields_eof.server_status);
if (fields_eof.server_status & SERVER_QUERY_NO_GOOD_INDEX_USED) {
statistic = STAT_BAD_INDEX_USED;
} else if (fields_eof.server_status & SERVER_QUERY_NO_INDEX_USED) {
statistic = STAT_NO_INDEX_USED;
} else if (fields_eof.server_status & SERVER_QUERY_WAS_SLOW) {
statistic = STAT_QUERY_WAS_SLOW;
}
MYSQLND_INC_CONN_STATISTIC(conn->stats, statistic);
}
} while (0);
PACKET_FREE(&fields_eof);
break; /* switch break */
}
} while (0);
PACKET_FREE(&rset_header);
DBG_INF(ret == PASS? "PASS":"FAIL");
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_result_buffered::fetch_lengths */
/*
Do lazy initialization for buffered results. As PHP strings have
length inside, this function makes not much sense in the context
of PHP, to be called as separate function. But let's have it for
completeness.
*/
static const size_t *
MYSQLND_METHOD(mysqlnd_result_buffered_zval, fetch_lengths)(const MYSQLND_RES_BUFFERED * const result)
{
const MYSQLND_RES_BUFFERED_ZVAL * const set = (const MYSQLND_RES_BUFFERED_ZVAL *) result;
/*
If:
- unbuffered result
- first row has not been read
- last_row has been read
*/
DBG_ENTER("mysqlnd_result_buffered_zval::fetch_lengths");
if (set->data_cursor == NULL ||
set->data_cursor == set->data ||
((set->data_cursor - set->data) > (result->row_count * result->field_count) ))
{
DBG_INF("EOF");
DBG_RETURN(NULL);/* No rows or no more rows */
}
DBG_INF("non NULL");
DBG_RETURN(result->lengths);
}
/* }}} */
/* {{{ mysqlnd_result_buffered_c::fetch_lengths */
/*
Do lazy initialization for buffered results. As PHP strings have
length inside, this function makes not much sense in the context
of PHP, to be called as separate function. But let's have it for
completeness.
*/
static const size_t *
MYSQLND_METHOD(mysqlnd_result_buffered_c, fetch_lengths)(const MYSQLND_RES_BUFFERED * const result)
{
const MYSQLND_RES_BUFFERED_C * const set = (const MYSQLND_RES_BUFFERED_C *) result;
DBG_ENTER("mysqlnd_result_buffered_c::fetch_lengths");
if (set->current_row > set->row_count || set->current_row == 0) {
DBG_INF("EOF");
DBG_RETURN(NULL); /* No more rows, or no fetched row */
}
DBG_INF("non NULL");
DBG_RETURN(result->lengths);
}
/* }}} */
/* {{{ mysqlnd_result_unbuffered::fetch_lengths */
static const size_t *
MYSQLND_METHOD(mysqlnd_result_unbuffered, fetch_lengths)(const MYSQLND_RES_UNBUFFERED * const result)
{
/* simulate output of libmysql */
return (result->last_row_data || result->eof_reached)? result->lengths : NULL;
}
/* }}} */
/* {{{ mysqlnd_res::fetch_lengths */
static const size_t *
MYSQLND_METHOD(mysqlnd_res, fetch_lengths)(const MYSQLND_RES * const result)
{
const size_t * ret;
DBG_ENTER("mysqlnd_res::fetch_lengths");
ret = result->stored_data && result->stored_data->m.fetch_lengths ?
result->stored_data->m.fetch_lengths(result->stored_data) :
(result->unbuf && result->unbuf->m.fetch_lengths ?
result->unbuf->m.fetch_lengths(result->unbuf) :
NULL
);
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_result_unbuffered::fetch_row_c */
static enum_func_status
MYSQLND_METHOD(mysqlnd_result_unbuffered, fetch_row_c)(MYSQLND_RES * result, void * param, unsigned int flags, zend_bool * fetched_anything)
{
enum_func_status ret;
MYSQLND_ROW_C *row = (MYSQLND_ROW_C *) param;
MYSQLND_PACKET_ROW *row_packet = result->unbuf->row_packet;
MYSQLND_RES_METADATA * const meta = result->meta;
MYSQLND_CONN_DATA * const conn = result->conn;
void *checkpoint;
DBG_ENTER("mysqlnd_result_unbuffered::fetch_row_c");
*fetched_anything = FALSE;
if (result->unbuf->eof_reached) {
/* No more rows obviously */
DBG_RETURN(PASS);
}
if (!conn || GET_CONNECTION_STATE(&conn->state) != CONN_FETCHING_DATA) {
SET_CLIENT_ERROR(conn->error_info, CR_COMMANDS_OUT_OF_SYNC, UNKNOWN_SQLSTATE, mysqlnd_out_of_sync);
DBG_RETURN(FAIL);
}
if (!row_packet) {
/* Not fully initialized object that is being cleaned up */
DBG_RETURN(FAIL);
}
/* Let the row packet fill our buffer and skip additional mnd_malloc + memcpy */
row_packet->skip_extraction = FALSE;
checkpoint = result->memory_pool->checkpoint;
mysqlnd_mempool_save_state(result->memory_pool);
/*
If we skip rows (row == NULL) we have to
result->m.unbuffered_free_last_data() before it. The function returns always true.
*/
if (PASS == (ret = PACKET_READ(conn, row_packet)) && !row_packet->eof) {
result->unbuf->m.free_last_data(result->unbuf, conn->stats);
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.ptr = NULL;
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_ROWS_FETCHED_FROM_CLIENT_NORMAL_UNBUF);
if (!row_packet->skip_extraction) {
unsigned int i, field_count = meta->field_count;
enum_func_status rc = result->unbuf->m.row_decoder(&result->unbuf->last_row_buffer,
result->unbuf->last_row_data,
field_count,
row_packet->fields_metadata,
conn->options->int_and_float_native,
conn->stats);
if (PASS != rc) {
mysqlnd_mempool_restore_state(result->memory_pool);
result->memory_pool->checkpoint = checkpoint;
DBG_RETURN(FAIL);
}
{
*row = mnd_malloc(field_count * sizeof(char *));
if (*row) {
MYSQLND_FIELD * field = meta->fields;
size_t * lengths = result->unbuf->lengths;
for (i = 0; i < field_count; i++, field++) {
zval * data = &result->unbuf->last_row_data[i];
const size_t len = (Z_TYPE_P(data) == IS_STRING)? Z_STRLEN_P(data) : 0;
/* BEGIN difference between normal normal fetch and _c */
if (Z_TYPE_P(data) != IS_NULL) {
convert_to_string(data);
(*row)[i] = Z_STRVAL_P(data);
} else {
(*row)[i] = NULL;
}
/* END difference between normal normal fetch and _c */
if (lengths) {
lengths[i] = len;
}
if (field->max_length < len) {
field->max_length = len;
}
}
} else {
SET_OOM_ERROR(conn->error_info);
}
}
}
result->unbuf->row_count++;
*fetched_anything = TRUE;
} else if (ret == FAIL) {
if (row_packet->error_info.error_no) {
COPY_CLIENT_ERROR(conn->error_info, row_packet->error_info);
DBG_ERR_FMT("errorno=%u error=%s", row_packet->error_info.error_no, row_packet->error_info.error);
}
SET_CONNECTION_STATE(&conn->state, CONN_READY);
result->unbuf->eof_reached = TRUE; /* so next time we won't get an error */
} else if (row_packet->eof) {
/* Mark the connection as usable again */
DBG_INF_FMT("warnings=%u server_status=%u", row_packet->warning_count, row_packet->server_status);
result->unbuf->eof_reached = TRUE;
UPSERT_STATUS_RESET(conn->upsert_status);
UPSERT_STATUS_SET_WARNINGS(conn->upsert_status, row_packet->warning_count);
UPSERT_STATUS_SET_SERVER_STATUS(conn->upsert_status, row_packet->server_status);
/*
result->row_packet will be cleaned when
destroying the result object
*/
if (UPSERT_STATUS_GET_SERVER_STATUS(conn->upsert_status) & SERVER_MORE_RESULTS_EXISTS) {
SET_CONNECTION_STATE(&conn->state, CONN_NEXT_RESULT_PENDING);
} else {
SET_CONNECTION_STATE(&conn->state, CONN_READY);
}
result->unbuf->m.free_last_data(result->unbuf, conn->stats);
}
mysqlnd_mempool_restore_state(result->memory_pool);
result->memory_pool->checkpoint = checkpoint;
DBG_INF_FMT("ret=%s fetched=%u", ret == PASS? "PASS":"FAIL", *fetched_anything);
DBG_RETURN(PASS);
}
/* }}} */
/* {{{ mysqlnd_result_unbuffered::fetch_row */
static enum_func_status
MYSQLND_METHOD(mysqlnd_result_unbuffered, fetch_row)(MYSQLND_RES * result, void * param, const unsigned int flags, zend_bool * fetched_anything)
{
enum_func_status ret;
zval *row = (zval *) param;
MYSQLND_PACKET_ROW *row_packet = result->unbuf->row_packet;
const MYSQLND_RES_METADATA * const meta = result->meta;
MYSQLND_CONN_DATA * const conn = result->conn;
void *checkpoint;
DBG_ENTER("mysqlnd_result_unbuffered::fetch_row");
*fetched_anything = FALSE;
if (result->unbuf->eof_reached) {
/* No more rows obviously */
DBG_RETURN(PASS);
}
if (GET_CONNECTION_STATE(&conn->state) != CONN_FETCHING_DATA) {
SET_CLIENT_ERROR(conn->error_info, CR_COMMANDS_OUT_OF_SYNC, UNKNOWN_SQLSTATE, mysqlnd_out_of_sync);
DBG_RETURN(FAIL);
}
if (!row_packet) {
/* Not fully initialized object that is being cleaned up */
DBG_RETURN(FAIL);
}
/* Let the row packet fill our buffer and skip additional mnd_malloc + memcpy */
row_packet->skip_extraction = row? FALSE:TRUE;
checkpoint = result->memory_pool->checkpoint;
mysqlnd_mempool_save_state(result->memory_pool);
/*
If we skip rows (row == NULL) we have to
result->m.unbuffered_free_last_data() before it. The function returns always true.
*/
if (PASS == (ret = PACKET_READ(conn, row_packet)) && !row_packet->eof) {
result->unbuf->m.free_last_data(result->unbuf, conn->stats);
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.ptr = NULL;
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_ROWS_FETCHED_FROM_CLIENT_NORMAL_UNBUF);
if (!row_packet->skip_extraction) {
unsigned int i, field_count = meta->field_count;
enum_func_status rc = result->unbuf->m.row_decoder(&result->unbuf->last_row_buffer,
result->unbuf->last_row_data,
field_count,
row_packet->fields_metadata,
conn->options->int_and_float_native,
conn->stats);
if (PASS != rc) {
mysqlnd_mempool_restore_state(result->memory_pool);
result->memory_pool->checkpoint = checkpoint;
DBG_RETURN(FAIL);
}
{
HashTable * row_ht = Z_ARRVAL_P(row);
MYSQLND_FIELD * field = meta->fields;
size_t * lengths = result->unbuf->lengths;
for (i = 0; i < field_count; i++, field++) {
zval * data = &result->unbuf->last_row_data[i];
const size_t len = (Z_TYPE_P(data) == IS_STRING)? Z_STRLEN_P(data) : 0;
if (flags & MYSQLND_FETCH_NUM) {
Z_TRY_ADDREF_P(data);
zend_hash_next_index_insert(row_ht, data);
}
if (flags & MYSQLND_FETCH_ASSOC) {
/* zend_hash_quick_update needs length + trailing zero */
/* QQ: Error handling ? */
/*
zend_hash_quick_update does not check, as add_assoc_zval_ex do, whether
the index is a numeric and convert it to it. This however means constant
hashing of the column name, which is not needed as it can be precomputed.
*/
Z_TRY_ADDREF_P(data);
if (meta->fields[i].is_numeric == FALSE) {
zend_hash_update(row_ht, meta->fields[i].sname, data);
} else {
zend_hash_index_update(row_ht, meta->fields[i].num_key, data);
}
}
if (lengths) {
lengths[i] = len;
}
if (field->max_length < len) {
field->max_length = len;
}
}
}
}
result->unbuf->row_count++;
*fetched_anything = TRUE;
} else if (ret == FAIL) {
if (row_packet->error_info.error_no) {
COPY_CLIENT_ERROR(conn->error_info, row_packet->error_info);
DBG_ERR_FMT("errorno=%u error=%s", row_packet->error_info.error_no, row_packet->error_info.error);
}
SET_CONNECTION_STATE(&conn->state, CONN_READY);
result->unbuf->eof_reached = TRUE; /* so next time we won't get an error */
} else if (row_packet->eof) {
/* Mark the connection as usable again */
DBG_INF_FMT("warnings=%u server_status=%u", row_packet->warning_count, row_packet->server_status);
result->unbuf->eof_reached = TRUE;
UPSERT_STATUS_RESET(conn->upsert_status);
UPSERT_STATUS_SET_WARNINGS(conn->upsert_status, row_packet->warning_count);
UPSERT_STATUS_SET_SERVER_STATUS(conn->upsert_status, row_packet->server_status);
/*
result->row_packet will be cleaned when
destroying the result object
*/
if (UPSERT_STATUS_GET_SERVER_STATUS(conn->upsert_status) & SERVER_MORE_RESULTS_EXISTS) {
SET_CONNECTION_STATE(&conn->state, CONN_NEXT_RESULT_PENDING);
} else {
SET_CONNECTION_STATE(&conn->state, CONN_READY);
}
result->unbuf->m.free_last_data(result->unbuf, conn->stats);
}
mysqlnd_mempool_restore_state(result->memory_pool);
result->memory_pool->checkpoint = checkpoint;
DBG_INF_FMT("ret=%s fetched=%u", ret == PASS? "PASS":"FAIL", *fetched_anything);
DBG_RETURN(PASS);
}
/* }}} */
/* {{{ mysqlnd_res::use_result */
static MYSQLND_RES *
MYSQLND_METHOD(mysqlnd_res, use_result)(MYSQLND_RES * const result, const zend_bool ps)
{
MYSQLND_CONN_DATA * const conn = result->conn;
DBG_ENTER("mysqlnd_res::use_result");
SET_EMPTY_ERROR(conn->error_info);
if (ps == FALSE) {
result->type = MYSQLND_RES_NORMAL;
} else {
result->type = MYSQLND_RES_PS_UNBUF;
}
result->unbuf = mysqlnd_result_unbuffered_init(result, result->field_count, ps);
if (!result->unbuf) {
goto oom;
}
/*
Will be freed in the mysqlnd_internal_free_result_contents() called
by the resource destructor. mysqlnd_result_unbuffered::fetch_row() expects
this to be not NULL.
*/
/* FALSE = non-persistent */
{
struct st_mysqlnd_packet_row *row_packet = mnd_emalloc(sizeof(struct st_mysqlnd_packet_row));
conn->payload_decoder_factory->m.init_row_packet(row_packet);
row_packet->result_set_memory_pool = result->unbuf->result_set_memory_pool;
row_packet->field_count = result->field_count;
row_packet->binary_protocol = ps;
row_packet->fields_metadata = result->meta->fields;
result->unbuf->row_packet = row_packet;
}
DBG_RETURN(result);
oom:
SET_OOM_ERROR(conn->error_info);
DBG_RETURN(NULL);
}
/* }}} */
/* {{{ mysqlnd_result_buffered::fetch_row_c */
static enum_func_status
MYSQLND_METHOD(mysqlnd_result_buffered, fetch_row_c)(MYSQLND_RES * result, void * param, unsigned int flags, zend_bool * const fetched_anything)
{
enum_func_status ret = FAIL;
MYSQLND_ROW_C * row = (MYSQLND_ROW_C *) param;
const MYSQLND_RES_METADATA * const meta = result->meta;
const unsigned int field_count = meta->field_count;
MYSQLND_CONN_DATA * const conn = result->conn;
DBG_ENTER("mysqlnd_result_buffered::fetch_row_c");
if (result->stored_data->type == MYSQLND_BUFFERED_TYPE_ZVAL) {
MYSQLND_RES_BUFFERED_ZVAL * set = (MYSQLND_RES_BUFFERED_ZVAL *) result->stored_data;
/* If we haven't read everything */
if (set->data_cursor &&
(set->data_cursor - set->data) < (result->stored_data->row_count * field_count))
{
zval *current_row = set->data_cursor;
unsigned int i;
if (Z_ISUNDEF(current_row[0])) {
uint64_t row_num = (set->data_cursor - set->data) / field_count;
enum_func_status rc = set->m.row_decoder(&set->row_buffers[row_num],
current_row,
field_count,
meta->fields,
conn->options->int_and_float_native,
conn->stats);
if (rc != PASS) {
DBG_RETURN(FAIL);
}
++set->initialized_rows;
for (i = 0; i < 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) {
const size_t len = Z_STRLEN(current_row[i]);
if (meta->fields[i].max_length < len) {
meta->fields[i].max_length = len;