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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 |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andrey Hristov <andrey@php.net> |
| Ulf Wendel <uw@php.net> |
| Georg Richter <georg@php.net> |
+----------------------------------------------------------------------+
*/
#include "php.h"
#include "mysqlnd.h"
#include "mysqlnd_wireprotocol.h"
#include "mysqlnd_priv.h"
#include "mysqlnd_debug.h"
/* {{{ mysqlnd_local_infile_init */
static
int mysqlnd_local_infile_init(void ** ptr, const char * const filename)
{
MYSQLND_INFILE_INFO *info;
php_stream_context *context = NULL;
DBG_ENTER("mysqlnd_local_infile_init");
info = ((MYSQLND_INFILE_INFO *)mnd_ecalloc(1, sizeof(MYSQLND_INFILE_INFO)));
if (!info) {
DBG_RETURN(1);
}
*ptr = info;
/* check open_basedir */
if (PG(open_basedir)) {
if (php_check_open_basedir_ex(filename, 0) == -1) {
strcpy(info->error_msg, "open_basedir restriction in effect. Unable to open file");
info->error_no = CR_UNKNOWN_ERROR;
DBG_RETURN(1);
}
}
info->filename = filename;
info->fd = php_stream_open_wrapper_ex((char *)filename, "r", 0, NULL, context);
if (info->fd == NULL) {
snprintf((char *)info->error_msg, sizeof(info->error_msg), "Can't find file '%-.64s'.", filename);
info->error_no = MYSQLND_EE_FILENOTFOUND;
DBG_RETURN(1);
}
DBG_RETURN(0);
}
/* }}} */
/* {{{ mysqlnd_local_infile_read */
static
int mysqlnd_local_infile_read(void * ptr, zend_uchar * buf, unsigned int buf_len)
{
MYSQLND_INFILE_INFO *info = (MYSQLND_INFILE_INFO *)ptr;
int count;
DBG_ENTER("mysqlnd_local_infile_read");
count = (int) php_stream_read(info->fd, (char *) buf, buf_len);
if (count < 0) {
strcpy(info->error_msg, "Error reading file");
info->error_no = CR_UNKNOWN_ERROR;
}
DBG_RETURN(count);
}
/* }}} */
/* {{{ mysqlnd_local_infile_error */
static
int mysqlnd_local_infile_error(void * ptr, char *error_buf, unsigned int error_buf_len)
{
MYSQLND_INFILE_INFO *info = (MYSQLND_INFILE_INFO *)ptr;
DBG_ENTER("mysqlnd_local_infile_error");
if (info) {
strlcpy(error_buf, info->error_msg, error_buf_len);
DBG_INF_FMT("have info, %d", info->error_no);
DBG_RETURN(info->error_no);
}
strlcpy(error_buf, "Unknown error", error_buf_len);
DBG_INF_FMT("no info, %d", CR_UNKNOWN_ERROR);
DBG_RETURN(CR_UNKNOWN_ERROR);
}
/* }}} */
/* {{{ mysqlnd_local_infile_end */
static
void mysqlnd_local_infile_end(void * ptr)
{
MYSQLND_INFILE_INFO *info = (MYSQLND_INFILE_INFO *)ptr;
if (info) {
/* php_stream_close segfaults on NULL */
if (info->fd) {
php_stream_close(info->fd);
info->fd = NULL;
}
mnd_efree(info);
}
}
/* }}} */
/* {{{ mysqlnd_local_infile_default */
PHPAPI void
mysqlnd_local_infile_default(MYSQLND_CONN_DATA * conn)
{
conn->infile.local_infile_init = mysqlnd_local_infile_init;
conn->infile.local_infile_read = mysqlnd_local_infile_read;
conn->infile.local_infile_error = mysqlnd_local_infile_error;
conn->infile.local_infile_end = mysqlnd_local_infile_end;
}
/* }}} */
static const char *lost_conn = "Lost connection to MySQL server during LOAD DATA of a local file";
/* {{{ mysqlnd_handle_local_infile */
enum_func_status
mysqlnd_handle_local_infile(MYSQLND_CONN_DATA * conn, const char * const filename, bool * is_warning)
{
zend_uchar *buf = NULL;
zend_uchar empty_packet[MYSQLND_HEADER_SIZE];
enum_func_status result = FAIL;
unsigned int buflen = 4096;
void *info = NULL;
int bufsize;
size_t ret;
MYSQLND_INFILE infile;
MYSQLND_PFC * net = conn->protocol_frame_codec;
MYSQLND_VIO * vio = conn->vio;
bool is_local_infile_enabled = (conn->options->flags & CLIENT_LOCAL_FILES) == CLIENT_LOCAL_FILES;
const char* local_infile_directory = conn->options->local_infile_directory;
bool is_local_infile_dir_set = local_infile_directory != NULL;
bool prerequisities_ok = TRUE;
DBG_ENTER("mysqlnd_handle_local_infile");
/*
if local_infile is disabled, and local_infile_dir is not set, then operation is forbidden
*/
if (!is_local_infile_enabled && !is_local_infile_dir_set) {
SET_CLIENT_ERROR(conn->error_info, CR_LOAD_DATA_LOCAL_INFILE_REJECTED, UNKNOWN_SQLSTATE,
"LOAD DATA LOCAL INFILE is forbidden, check related settings like "
"mysqli.allow_local_infile|mysqli.local_infile_directory or "
"PDO::MYSQL_ATTR_LOCAL_INFILE|PDO::MYSQL_ATTR_LOCAL_INFILE_DIRECTORY");
prerequisities_ok = FALSE;
}
/*
if local_infile_dir is set, then check whether it actually exists, and is accessible
*/
if (is_local_infile_dir_set) {
php_stream *stream = php_stream_opendir(local_infile_directory, REPORT_ERRORS, NULL);
if (stream) {
php_stream_closedir(stream);
} else {
SET_CLIENT_ERROR(conn->error_info, CR_LOAD_DATA_LOCAL_INFILE_REJECTED, UNKNOWN_SQLSTATE, "cannot open local_infile_directory");
prerequisities_ok = FALSE;
}
}
/*
if local_infile is disabled and local_infile_dir is set, then we have to check whether
filename is located inside its subtree
but only in such a case, because when local_infile is enabled, then local_infile_dir is ignored
*/
if (prerequisities_ok && !is_local_infile_enabled && is_local_infile_dir_set) {
if (php_check_specific_open_basedir(local_infile_directory, filename) == -1) {
SET_CLIENT_ERROR(conn->error_info, CR_LOAD_DATA_LOCAL_INFILE_REJECTED, UNKNOWN_SQLSTATE,
"LOAD DATA LOCAL INFILE DIRECTORY restriction in effect. Unable to open file");
prerequisities_ok = FALSE;
}
}
if (!prerequisities_ok) {
/* write empty packet to server */
ret = net->data->m.send(net, vio, empty_packet, 0, conn->stats, conn->error_info);
*is_warning = TRUE;
goto infile_error;
}
infile = conn->infile;
/* allocate buffer for reading data */
buf = (zend_uchar *) mnd_ecalloc(1, buflen);
*is_warning = FALSE;
/* init handler: allocate read buffer and open file */
if (infile.local_infile_init(&info, (char *)filename)) {
char tmp_buf[sizeof(conn->error_info->error)];
int tmp_error_no;
*is_warning = TRUE;
/* error occurred */
tmp_error_no = infile.local_infile_error(info, tmp_buf, sizeof(tmp_buf));
SET_CLIENT_ERROR(conn->error_info, tmp_error_no, UNKNOWN_SQLSTATE, tmp_buf);
/* write empty packet to server */
ret = net->data->m.send(net, vio, empty_packet, 0, conn->stats, conn->error_info);
goto infile_error;
}
/* read data */
while ((bufsize = infile.local_infile_read (info, buf + MYSQLND_HEADER_SIZE, buflen - MYSQLND_HEADER_SIZE)) > 0) {
if ((ret = net->data->m.send(net, vio, buf, bufsize, conn->stats, conn->error_info)) == 0) {
DBG_ERR_FMT("Error during read : %d %s %s", CR_SERVER_LOST, UNKNOWN_SQLSTATE, lost_conn);
SET_CLIENT_ERROR(conn->error_info, CR_SERVER_LOST, UNKNOWN_SQLSTATE, lost_conn);
goto infile_error;
}
}
/* send empty packet for eof */
if ((ret = net->data->m.send(net, vio, empty_packet, 0, conn->stats, conn->error_info)) == 0) {
SET_CLIENT_ERROR(conn->error_info, CR_SERVER_LOST, UNKNOWN_SQLSTATE, lost_conn);
goto infile_error;
}
/* error during read occurred */
if (bufsize < 0) {
char tmp_buf[sizeof(conn->error_info->error)];
int tmp_error_no;
*is_warning = TRUE;
DBG_ERR_FMT("Bufsize < 0, warning, %d %s %s", CR_SERVER_LOST, UNKNOWN_SQLSTATE, lost_conn);
tmp_error_no = infile.local_infile_error(info, tmp_buf, sizeof(tmp_buf));
SET_CLIENT_ERROR(conn->error_info, tmp_error_no, UNKNOWN_SQLSTATE, tmp_buf);
goto infile_error;
}
result = PASS;
infile_error:
/* get response from server and update upsert values */
if (FAIL == conn->payload_decoder_factory->m.send_command_handle_response(
conn->payload_decoder_factory,
PROT_OK_PACKET, FALSE, COM_QUERY, FALSE,
conn->error_info,
conn->upsert_status,
&conn->last_message)) {
result = FAIL;
}
(*conn->infile.local_infile_end)(info);
if (buf) {
mnd_efree(buf);
}
DBG_INF_FMT("%s", result == PASS? "PASS":"FAIL");
DBG_RETURN(result);
}
/* }}} */
|
