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/* -*- mode:c; tab-width:8; c-basic-offset:8; indent-tabs-mode:nil; -*- */
/*
Copyright (C) 2016 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef STDC_HEADERS
#include <stddef.h>
#endif
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <errno.h>
#include "compat.h"
#include "smb2.h"
#include "libsmb2.h"
#include "libsmb2-private.h"
static int
smb2_encode_error_reply(struct smb2_context *smb2,
struct smb2_pdu *pdu,
struct smb2_error_reply *rep)
{
int len;
uint8_t *buf;
struct smb2_iovec *iov;
len = SMB2_ERROR_REPLY_SIZE;
buf = calloc(len, sizeof(uint8_t));
if (buf == NULL) {
smb2_set_error(smb2, "Failed to allocate error buffer");
return -1;
}
iov = smb2_add_iovector(smb2, &pdu->out, buf, len, free);
if (iov == NULL) {
smb2_set_error(smb2, "Failed to add iovector for error reply");
return -1;
}
smb2_set_uint16(iov, 0, SMB2_ERROR_REPLY_SIZE);
smb2_set_uint8(iov, 2, rep->error_context_count);
smb2_set_uint32(iov, 4, rep->byte_count);
/* TODO - handle error data? */
return 0;
}
struct smb2_pdu *
smb2_cmd_error_reply_async(struct smb2_context *smb2,
struct smb2_error_reply *rep,
uint8_t causing_command,
int status,
smb2_command_cb cb, void *cb_data)
{
struct smb2_pdu *pdu;
pdu = smb2_allocate_pdu(smb2, causing_command, cb, cb_data);
if (pdu == NULL) {
return NULL;
}
pdu->header.status = status;
if (smb2_encode_error_reply(smb2, pdu, rep)) {
smb2_free_pdu(smb2, pdu);
return NULL;
}
if (smb2_pad_to_64bit(smb2, &pdu->out) != 0) {
smb2_free_pdu(smb2, pdu);
return NULL;
}
return pdu;
}
int
smb2_process_error_fixed(struct smb2_context *smb2,
struct smb2_pdu *pdu)
{
struct smb2_error_reply *rep;
struct smb2_iovec *iov = &smb2->in.iov[smb2->in.niov - 1];
uint16_t struct_size;
smb2_get_uint16(iov, 0, &struct_size);
if (struct_size != SMB2_ERROR_REPLY_SIZE ||
(struct_size & 0xfffe) != iov->len) {
smb2_set_error(smb2, "Unexpected size of Error "
"reply. Expected %d, got %d",
SMB2_ERROR_REPLY_SIZE,
(int)iov->len);
return -1;
}
rep = malloc(sizeof(*rep));
if (rep == NULL) {
smb2_set_error(smb2, "Failed to allocate error reply");
return -1;
}
pdu->payload = rep;
smb2_get_uint8(iov, 2, &rep->error_context_count);
smb2_get_uint32(iov, 4, &rep->byte_count);
return rep->byte_count;
}
int
smb2_process_error_variable(struct smb2_context *smb2,
struct smb2_pdu *pdu)
{
struct smb2_error_reply *rep = pdu->payload;
struct smb2_iovec *iov = &smb2->in.iov[smb2->in.niov - 1];
rep->error_data = &iov->buf[0];
return 0;
}
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