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mysqlnd_result.c
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 2006-2014 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_block_alloc.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"
#define MYSQLND_SILENT
/* {{{ 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 TSRMLS_DC)
{
unsigned int i;
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;
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 (NULL == data_cursor[0]) {
rc = result->m.row_decoder(result->row_buffers[(data_cursor - data_begin) / field_count],
data_cursor,
field_count,
meta->fields,
int_and_float_native,
stats TSRMLS_CC);
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_P(data_cursor[i]) >= IS_STRING) {
unsigned long len = Z_STRLEN_P(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, zend_bool int_and_float_native TSRMLS_DC)
{
unsigned int i;
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 (i = 0; i < result->row_count; i++) {
/* (i / 8) & the_bit_for_i*/
if (initialized[i >> 3] & (1 << (i & 7))) {
continue;
}
rc = result->m.row_decoder(result->row_buffers[i], current_row, field_count, meta->fields, int_and_float_native, stats TSRMLS_CC);
if (rc != PASS) {
ret = FAIL;
break;
}
result->initialized_rows++;
initialized[i >> 3] |= (1 << (i & 7));
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_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;
}
}
zval_ptr_dtor(¤t_row[i]);
}
}
mnd_efree(current_row);
}
DBG_RETURN(ret);
}
/* }}} */
/* {{{ mysqlnd_rset_zval_ptr_dtor */
static void
mysqlnd_rset_zval_ptr_dtor(zval **zv, enum_mysqlnd_res_type type, zend_bool * copy_ctor_called TSRMLS_DC)
{
DBG_ENTER("mysqlnd_rset_zval_ptr_dtor");
DBG_INF_FMT("type=%u", type);
if (!zv || !*zv) {
*copy_ctor_called = FALSE;
DBG_ERR_FMT("zv was NULL");
DBG_VOID_RETURN;
}
/*
This zval is not from the cache block.
Thus the refcount is -1 than of a zval from the cache,
because the zvals from the cache are owned by it.
*/
if (type == MYSQLND_RES_PS_BUF || type == MYSQLND_RES_PS_UNBUF) {
*copy_ctor_called = FALSE;
; /* do nothing, zval_ptr_dtor will do the job*/
} else if (Z_REFCOUNT_PP(zv) > 1) {
/*
Not a prepared statement, then we have to
call copy_ctor and then zval_ptr_dtor()
*/
if (Z_TYPE_PP(zv) == IS_STRING) {
zval_copy_ctor(*zv);
}
*copy_ctor_called = TRUE;
} else {
/*
noone but us point to this, so we can safely ZVAL_NULL the zval,
so Zend does not try to free what the zval points to - which is
in result set buffers
*/
*copy_ctor_called = FALSE;
if (Z_TYPE_PP(zv) == IS_STRING) {
ZVAL_NULL(*zv);
}
}
DBG_INF_FMT("call the dtor on zval with refc %u", Z_REFCOUNT_PP(zv));
zval_ptr_dtor(zv);
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ 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 TSRMLS_DC)
{
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, ctor_called_count = 0;
zend_bool copy_ctor_called;
for (i = 0; i < unbuf->field_count; i++) {
mysqlnd_rset_zval_ptr_dtor(&(unbuf->last_row_data[i]), unbuf->ps ? MYSQLND_RES_PS_UNBUF : MYSQLND_RES_NORMAL, ©_ctor_called TSRMLS_CC);
if (copy_ctor_called) {
++ctor_called_count;
}
}
DBG_INF_FMT("copy_ctor_called_count=%u", ctor_called_count);
/* By using value3 macros we hold a mutex only once, there is no value2 */
MYSQLND_INC_CONN_STATISTIC_W_VALUE2(global_stats,
STAT_COPY_ON_WRITE_PERFORMED,
ctor_called_count,
STAT_COPY_ON_WRITE_SAVED,
unbuf->field_count - ctor_called_count);
/* Free last row's zvals */
mnd_efree(unbuf->last_row_data);
unbuf->last_row_data = NULL;
}
if (unbuf->last_row_buffer) {
DBG_INF("Freeing last row buffer");
/* Nothing points to this buffer now, free it */
unbuf->last_row_buffer->free_chunk(unbuf->last_row_buffer TSRMLS_CC);
unbuf->last_row_buffer = 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 TSRMLS_DC)
{
DBG_ENTER("mysqlnd_result_unbuffered, free_result");
result->m.free_last_data(result, global_stats TSRMLS_CC);
if (result->lengths) {
mnd_pefree(result->lengths, result->persistent);
result->lengths = NULL;
}
/* must be free before because references the memory pool */
if (result->row_packet) {
PACKET_FREE(result->row_packet);
result->row_packet = NULL;
}
if (result->result_set_memory_pool) {
mysqlnd_mempool_destroy(result->result_set_memory_pool TSRMLS_CC);
result->result_set_memory_pool = NULL;
}
mnd_pefree(result, result->persistent);
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 TSRMLS_DC)
{
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) {
unsigned int copy_on_write_performed = 0;
unsigned int copy_on_write_saved = 0;
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) {
if (current_row[col]) {
zend_bool copy_ctor_called;
mysqlnd_rset_zval_ptr_dtor(&(current_row[col]), set->ps? MYSQLND_RES_PS_BUF : MYSQLND_RES_NORMAL, ©_ctor_called TSRMLS_CC);
if (copy_ctor_called) {
++copy_on_write_performed;
} else {
++copy_on_write_saved;
}
}
}
}
}
MYSQLND_INC_GLOBAL_STATISTIC_W_VALUE2(STAT_COPY_ON_WRITE_PERFORMED, copy_on_write_performed,
STAT_COPY_ON_WRITE_SAVED, copy_on_write_saved);
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 TSRMLS_DC)
{
DBG_ENTER("mysqlnd_result_buffered_c::free_result");
mnd_pefree(set->initialized, set->persistent);
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 TSRMLS_DC)
{
int64_t row;
DBG_ENTER("mysqlnd_result_buffered::free_result");
DBG_INF_FMT("Freeing "MYSQLND_LLU_SPEC" row(s)", set->row_count);
if (set->type == MYSQLND_BUFFERED_TYPE_ZVAL) {
MYSQLND_METHOD(mysqlnd_result_buffered_zval, free_result)((MYSQLND_RES_BUFFERED_ZVAL *) set TSRMLS_CC);
} if (set->type == MYSQLND_BUFFERED_TYPE_C) {
MYSQLND_METHOD(mysqlnd_result_buffered_c, free_result)((MYSQLND_RES_BUFFERED_C *) set TSRMLS_CC);
}
for (row = set->row_count - 1; row >= 0; row--) {
MYSQLND_MEMORY_POOL_CHUNK *current_buffer = set->row_buffers[row];
current_buffer->free_chunk(current_buffer TSRMLS_CC);
}
if (set->lengths) {
mnd_pefree(set->lengths, set->persistent);
set->lengths = NULL;
}
if (set->row_buffers) {
mnd_pefree(set->row_buffers, 0);
set->row_buffers = NULL;
}
if (set->result_set_memory_pool) {
mysqlnd_mempool_destroy(set->result_set_memory_pool TSRMLS_CC);
set->result_set_memory_pool = NULL;
}
set->row_count = 0;
mnd_pefree(set, set->persistent);
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_res::free_result_buffers */
static void
MYSQLND_METHOD(mysqlnd_res, free_result_buffers)(MYSQLND_RES * result TSRMLS_DC)
{
DBG_ENTER("mysqlnd_res::free_result_buffers");
DBG_INF_FMT("%s", result->unbuf? "unbuffered":(result->stored_data? "buffered":"unknown"));
if (result->unbuf) {
result->unbuf->m.free_result(result->unbuf, result->conn? result->conn->stats : NULL TSRMLS_CC);
result->unbuf = NULL;
} else if (result->stored_data) {
result->stored_data->m.free_result(result->stored_data TSRMLS_CC);
result->stored_data = NULL;
}
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_res::free_result_contents_internal */
static
void MYSQLND_METHOD(mysqlnd_res, free_result_contents_internal)(MYSQLND_RES * result TSRMLS_DC)
{
DBG_ENTER("mysqlnd_res::free_result_contents_internal");
result->m.free_result_buffers(result TSRMLS_CC);
if (result->meta) {
result->meta->m->free_metadata(result->meta TSRMLS_CC);
result->meta = NULL;
}
DBG_VOID_RETURN;
}
/* }}} */
/* {{{ mysqlnd_res::free_result_internal */
static
void MYSQLND_METHOD(mysqlnd_res, free_result_internal)(MYSQLND_RES * result TSRMLS_DC)
{
DBG_ENTER("mysqlnd_res::free_result_internal");
result->m.skip_result(result TSRMLS_CC);
result->m.free_result_contents(result TSRMLS_CC);
if (result->conn) {
result->conn->m->free_reference(result->conn TSRMLS_CC);
result->conn = NULL;
}
mnd_pefree(result, result->persistent);
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 TSRMLS_DC)
{
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 TSRMLS_CC);
result->meta = NULL;
}
result->meta = result->m.result_meta_init(result->field_count, result->persistent TSRMLS_CC);
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 TSRMLS_CC)) {
result->m.free_result_contents(result TSRMLS_CC);
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 TSRMLS_DC)
{
MYSQLND_STMT_DATA * stmt = s ? s->data:NULL;
enum_func_status ret;
MYSQLND_PACKET_RSET_HEADER * rset_header = NULL;
MYSQLND_PACKET_EOF * fields_eof = NULL;
DBG_ENTER("mysqlnd_query_read_result_set_header");
DBG_INF_FMT("stmt=%lu", stmt? stmt->stmt_id:0);
ret = FAIL;
do {
rset_header = conn->protocol->m.get_rset_header_packet(conn->protocol, FALSE TSRMLS_CC);
if (!rset_header) {
SET_OOM_ERROR(*conn->error_info);
ret = FAIL;
break;
}
SET_ERROR_AFF_ROWS(conn);
if (FAIL == (ret = PACKET_READ(rset_header, conn))) {
php_error_docref(NULL TSRMLS_CC, 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.
*/
conn->upsert_status->server_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 */
CONN_SET_STATE(conn, 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 */
CONN_SET_STATE(conn, CONN_SENDING_LOAD_DATA);
ret = mysqlnd_handle_local_infile(conn, rset_header->info_or_local_file, &is_warning TSRMLS_CC);
CONN_SET_STATE(conn, (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;
memset(conn->upsert_status, 0, sizeof(*conn->upsert_status));
conn->upsert_status->warning_count = rset_header->warning_count;
conn->upsert_status->server_status = rset_header->server_status;
conn->upsert_status->affected_rows = rset_header->affected_rows;
conn->upsert_status->last_insert_id = rset_header->last_insert_id;
SET_NEW_MESSAGE(conn->last_message, conn->last_message_len,
rset_header->info_or_local_file, rset_header->info_or_local_file_len,
conn->persistent);
/* Result set can follow UPSERT statement, check server_status */
if (conn->upsert_status->server_status & SERVER_MORE_RESULTS_EXISTS) {
CONN_SET_STATE(conn, CONN_NEXT_RESULT_PENDING);
} else {
CONN_SET_STATE(conn, 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, conn->last_message_len, conn->persistent);
MYSQLND_INC_CONN_STATISTIC(conn->stats, STAT_RSET_QUERY);
memset(conn->upsert_status, 0, sizeof(*conn->upsert_status));
/* restore after zeroing */
SET_ERROR_AFF_ROWS(conn);
conn->last_query_type = QUERY_SELECT;
CONN_SET_STATE(conn, 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, conn->persistent TSRMLS_CC);
} 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, stmt->persistent TSRMLS_CC);
} 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 TSRMLS_CC))) {
/* 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 */
fields_eof = conn->protocol->m.get_eof_packet(conn->protocol, FALSE TSRMLS_CC);
if (!fields_eof) {
SET_OOM_ERROR(*conn->error_info);
ret = FAIL;
break;
}
if (FAIL == (ret = PACKET_READ(fields_eof, conn))) {
DBG_ERR("Error occurred while reading the EOF packet");
result->m.free_result_contents(result TSRMLS_CC);
mnd_efree(result);
if (!stmt) {
conn->current_result = NULL;
} else {
stmt->result = NULL;
memset(stmt, 0, sizeof(MYSQLND_STMT));
stmt->state = MYSQLND_STMT_INITTED;
}
} else {
unsigned int to_log = MYSQLND_G(log_mask);
to_log &= fields_eof->server_status;
DBG_INF_FMT("warnings=%u server_status=%u", fields_eof->warning_count, fields_eof->server_status);
conn->upsert_status->warning_count = 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).
*/
conn->upsert_status->server_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;
}
if (to_log) {
#if A0
char *backtrace = mysqlnd_get_backtrace(TSRMLS_C);
php_log_err(backtrace TSRMLS_CC);
efree(backtrace);
#endif
}
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 unsigned long *
MYSQLND_METHOD(mysqlnd_result_buffered_zval, fetch_lengths)(MYSQLND_RES_BUFFERED * const result TSRMLS_DC)
{
const MYSQLND_RES_BUFFERED_ZVAL * set = (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 unsigned long *
MYSQLND_METHOD(mysqlnd_result_buffered_c, fetch_lengths)(MYSQLND_RES_BUFFERED * const result TSRMLS_DC)
{
const MYSQLND_RES_BUFFERED_C * set = (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 unsigned long *
MYSQLND_METHOD(mysqlnd_result_unbuffered, fetch_lengths)(MYSQLND_RES_UNBUFFERED * const result TSRMLS_DC)
{
/* simulate output of libmysql */
return (result->last_row_data || result->eof_reached)? result->lengths : NULL;
}
/* }}} */
/* {{{ mysqlnd_res::fetch_lengths */
static unsigned long *
MYSQLND_METHOD(mysqlnd_res, fetch_lengths)(MYSQLND_RES * const result TSRMLS_DC)
{
unsigned long * 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 TSRMLS_CC) :
(result->unbuf && result->unbuf->m.fetch_lengths ?
result->unbuf->m.fetch_lengths(result->unbuf TSRMLS_CC) :
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 TSRMLS_DC)
{
enum_func_status ret;
MYSQLND_ROW_C *row = (MYSQLND_ROW_C *) param;
MYSQLND_PACKET_ROW *row_packet = result->unbuf->row_packet;
const MYSQLND_RES_METADATA * const meta = result->meta;
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_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_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;
/*
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(row_packet, result->conn)) && !row_packet->eof) {
result->unbuf->m.free_last_data(result->unbuf, result->conn? result->conn->stats : NULL TSRMLS_CC);
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;
MYSQLND_INC_CONN_STATISTIC(result->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,
result->conn->options->int_and_float_native,
result->conn->stats TSRMLS_CC);
if (PASS != rc) {
DBG_RETURN(FAIL);
}
{
*row = mnd_malloc(field_count * sizeof(char *));
if (*row) {
MYSQLND_FIELD * field = meta->fields;
unsigned long * lengths = result->unbuf->lengths;
for (i = 0; i < field_count; i++, field++) {
zval * data = result->unbuf->last_row_data[i];
unsigned int len = (Z_TYPE_P(data) == IS_NULL)? 0:Z_STRLEN_P(data);
/* 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(*result->conn->error_info);
}
}
}
result->unbuf->row_count++;
*fetched_anything = TRUE;
} else if (ret == FAIL) {
if (row_packet->error_info.error_no) {
COPY_CLIENT_ERROR(*result->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);
}
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) {
/* 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;
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);
}
result->unbuf->m.free_last_data(result->unbuf, result->conn? result->conn->stats : NULL TSRMLS_CC);
}
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 TSRMLS_DC)
{
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;
DBG_ENTER("mysqlnd_result_unbuffered::fetch_row");
*fetched_anything = FALSE;
if (result->unbuf->eof_reached) {
/* No more rows obviously */
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_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;
/*
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(row_packet, result->conn)) && !row_packet->eof) {
result->unbuf->m.free_last_data(result->unbuf, result->conn? result->conn->stats : NULL TSRMLS_CC);
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;
MYSQLND_INC_CONN_STATISTIC(result->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,
result->conn->options->int_and_float_native,
result->conn->stats TSRMLS_CC);
if (PASS != rc) {
DBG_RETURN(FAIL);
}
{
HashTable * row_ht = Z_ARRVAL_P(row);
MYSQLND_FIELD * field = meta->fields;
unsigned long * lengths = result->unbuf->lengths;
for (i = 0; i < field_count; i++, field++) {
zval * data = result->unbuf->last_row_data[i];
unsigned int len = (Z_TYPE_P(data) == IS_NULL)? 0:Z_STRLEN_P(data);
if (flags & MYSQLND_FETCH_NUM) {
Z_ADDREF_P(data);
zend_hash_next_index_insert(row_ht, &data, sizeof(zval *), NULL);
}
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_ADDREF_P(data);
if (meta->zend_hash_keys[i].is_numeric == FALSE) {
zend_hash_quick_update(Z_ARRVAL_P(row),
field->name,
field->name_length + 1,
meta->zend_hash_keys[i].key,
(void *) &data, sizeof(zval *), NULL);
} else {
zend_hash_index_update(Z_ARRVAL_P(row), meta->zend_hash_keys[i].key, (void *) &data, sizeof(zval *), NULL);
}
}
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(*result->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);
}
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) {
/* 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;
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);
}
result->unbuf->m.free_last_data(result->unbuf, result->conn? result->conn->stats : NULL TSRMLS_CC);
}
DBG_INF_FMT("ret=%s fetched=%u", ret == PASS? "PASS":"FAIL", *fetched_anything);
DBG_RETURN(PASS);