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/* -*- mode:c; tab-width:8; c-basic-offset:8; indent-tabs-mode:nil; -*- */
/*
Copyright (C) 2018 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 "compat.h"
#include "smb2.h"
#include "libsmb2.h"
#include "libsmb2-private.h"
int
smb2_decode_reparse_data_buffer(struct smb2_context *smb2,
void *memctx,
struct smb2_reparse_data_buffer *rp,
struct smb2_iovec *vec)
{
uint16_t suboffset, sublen, printoffset, printlen;
const char *tmp;
if (vec->len < 8) {
return -1;
}
smb2_get_uint32(vec, 0, &rp->reparse_tag);
smb2_get_uint16(vec, 4, &rp->reparse_data_length);
if ((uint16_t)vec->len < rp->reparse_data_length + 8) {
return -1;
}
switch (rp->reparse_tag) {
case SMB2_REPARSE_TAG_SYMLINK:
if (vec->len < 20) {
return -1;
}
smb2_get_uint32(vec, 16, &rp->symlink.flags);
smb2_get_uint16(vec, 8, &suboffset);
smb2_get_uint16(vec, 10, &sublen);
if (suboffset + sublen + 12 > rp->reparse_data_length) {
return -1;
}
tmp = smb2_utf16_to_utf8((uint16_t *)(void *)(&vec->buf[suboffset + 20]),
sublen / 2);
rp->symlink.subname = smb2_alloc_data(smb2, rp,
strlen(tmp) + 1);
if (rp->symlink.subname == NULL) {
free(discard_const(tmp));
return -1;
}
strcpy(rp->symlink.subname, tmp);
free(discard_const(tmp));
smb2_get_uint16(vec, 12, &printoffset);
smb2_get_uint16(vec, 14, &printlen);
if (printoffset + printlen + 12 > rp->reparse_data_length) {
return -1;
}
tmp = smb2_utf16_to_utf8((uint16_t *)(void *)(&vec->buf[printoffset + 20]),
printlen / 2);
rp->symlink.printname = smb2_alloc_data(smb2, rp,
strlen(tmp) + 1);
if (rp->symlink.printname == NULL) {
free(discard_const(tmp));
return -1;
}
strcpy(rp->symlink.printname, tmp);
free(discard_const(tmp));
}
return 0;
}
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