/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* Copyright 2013 Nexenta Systems, Inc. All rights reserved.
*/
/*
* Legacy encode/decode routines for door clients and servers.
*/
#if !defined(_KERNEL) && !defined(_FAKE_KERNEL)
#include <errno.h>
#include <string.h>
#include <strings.h>
#else
#include <sys/types.h>
#include <sys/sunddi.h>
#include <sys/errno.h>
#endif
#include <smbsrv/wintypes.h>
#include <smbsrv/smb_share.h>
#include <smbsrv/smb_door.h>
#include <smbsrv/alloc.h>
#include <smbsrv/smbinfo.h>
smb_dr_ctx_t *
smb_dr_decode_start(char *ptr, int size)
{
smb_dr_ctx_t *ctx = MEM_MALLOC("CommonDoor", sizeof (smb_dr_ctx_t));
if (ctx) {
ctx->start_ptr = ctx->ptr = ptr;
ctx->end_ptr = ptr + size;
ctx->status = 0;
}
return (ctx);
}
int
smb_dr_decode_finish(smb_dr_ctx_t *ctx)
{
int status = ctx->status;
if (status == 0 && ctx->ptr != ctx->end_ptr)
status = ENOTEMPTY;
MEM_FREE("CommonDoor", ctx);
return (status);
}
smb_dr_ctx_t *
smb_dr_encode_start(char *ptr, int size)
{
smb_dr_ctx_t *ctx = MEM_MALLOC("CommonDoor", sizeof (smb_dr_ctx_t));
if (ctx) {
ctx->start_ptr = ctx->ptr = ptr;
ctx->end_ptr = ptr + size;
ctx->status = 0;
}
return (ctx);
}
int
smb_dr_encode_finish(smb_dr_ctx_t *ctx, unsigned int *used)
{
int status = ctx->status;
if (status == 0) {
if (ctx->ptr < ctx->end_ptr) {
/*LINTED E_PTRDIFF_OVERFLOW*/
*used = ctx->ptr - ctx->start_ptr;
} else {
status = ENOSPC;
}
}
MEM_FREE("CommonDoor", ctx);
return (status);
}
DWORD
smb_dr_get_dword(smb_dr_ctx_t *ctx)
{
DWORD num = 0;
if (ctx->status == 0) {
if (ctx->ptr + sizeof (DWORD) <= ctx->end_ptr) {
(void) memcpy(&num, ctx->ptr, sizeof (DWORD));
ctx->ptr += sizeof (DWORD);
} else {
ctx->status = ENOSPC;
}
}
return (num);
}
int32_t
smb_dr_get_int32(smb_dr_ctx_t *ctx)
{
int32_t num = 0;
if (ctx->status == 0) {
if (ctx->ptr + sizeof (int32_t) <= ctx->end_ptr) {
(void) memcpy(&num, ctx->ptr, sizeof (int32_t));
ctx->ptr += sizeof (int32_t);
} else {
ctx->status = ENOSPC;
}
}
return (num);
}
uint32_t
smb_dr_get_uint32(smb_dr_ctx_t *ctx)
{
return ((uint32_t)smb_dr_get_int32(ctx));
}
char *
smb_dr_get_string(smb_dr_ctx_t *ctx)
{
char *buf = NULL;
int len = smb_dr_get_int32(ctx);
if (ctx->status == 0) {
if (len == -1)
return (buf);
if (ctx->ptr + len <= ctx->end_ptr) {
buf = MEM_MALLOC("CommonDoor", len +1);
if (buf) {
if (len == 0) {
(void) strcpy(buf, "");
} else {
(void) memcpy(buf, ctx->ptr, len);
ctx->ptr += len;
*(buf + len) = '\0';
}
} else {
#if !defined(_KERNEL) && !defined(_FAKE_KERNEL)
ctx->status = errno;
#else
ctx->status = ENOMEM;
#endif
}
} else {
ctx->status = ENOSPC;
}
}
return (buf);
}
void
smb_dr_put_dword(smb_dr_ctx_t *ctx, DWORD num)
{
if (ctx->status == 0) {
if (ctx->ptr + sizeof (DWORD) <= ctx->end_ptr) {
(void) memcpy(ctx->ptr, &num, sizeof (DWORD));
ctx->ptr += sizeof (DWORD);
} else {
ctx->status = ENOSPC;
}
}
}
void
smb_dr_put_int32(smb_dr_ctx_t *ctx, int32_t num)
{
if (ctx->status == 0) {
if (ctx->ptr + sizeof (int32_t) <= ctx->end_ptr) {
(void) memcpy(ctx->ptr, &num, sizeof (int32_t));
ctx->ptr += sizeof (int32_t);
} else {
ctx->status = ENOSPC;
}
}
}
void
smb_dr_put_uint32(smb_dr_ctx_t *ctx, uint32_t num)
{
smb_dr_put_int32(ctx, (int32_t)num);
}
void
smb_dr_put_string(smb_dr_ctx_t *ctx, const char *buf)
{
int len;
if (!buf)
len = -1;
else
len = strlen(buf);
if (ctx->status == 0) {
smb_dr_put_int32(ctx, len);
if (len <= 0)
return;
if (ctx->ptr + len <= ctx->end_ptr) {
(void) memcpy(ctx->ptr, buf, len);
ctx->ptr += len;
} else {
ctx->status = ENOSPC;
}
}
}
void
smb_dr_free_string(char *buf)
{
if (buf)
MEM_FREE("CommonDoor", buf);
}
int64_t
smb_dr_get_int64(smb_dr_ctx_t *ctx)
{
int64_t num = 0;
if (ctx->status == 0) {
if (ctx->ptr + sizeof (int64_t) <= ctx->end_ptr) {
(void) memcpy(&num, ctx->ptr, sizeof (int64_t));
ctx->ptr += sizeof (int64_t);
} else {
ctx->status = ENOSPC;
}
}
return (num);
}
uint64_t
smb_dr_get_uint64(smb_dr_ctx_t *ctx)
{
return ((uint64_t)smb_dr_get_int64(ctx));
}
void
smb_dr_put_int64(smb_dr_ctx_t *ctx, int64_t num)
{
if (ctx->status == 0) {
if (ctx->ptr + sizeof (int64_t) <= ctx->end_ptr) {
(void) memcpy(ctx->ptr, &num, sizeof (int64_t));
ctx->ptr += sizeof (int64_t);
} else {
ctx->status = ENOSPC;
}
}
}
void
smb_dr_put_uint64(smb_dr_ctx_t *ctx, uint64_t num)
{
smb_dr_put_int64(ctx, (int64_t)num);
}
void
smb_dr_put_short(smb_dr_ctx_t *ctx, short num)
{
if (ctx->status == 0) {
if (ctx->ptr + sizeof (short) <= ctx->end_ptr) {
(void) memcpy(ctx->ptr, &num, sizeof (short));
ctx->ptr += sizeof (short);
} else {
ctx->status = ENOSPC;
}
}
}
short
smb_dr_get_short(smb_dr_ctx_t *ctx)
{
short num = 0;
if (ctx->status == 0) {
if (ctx->ptr + sizeof (short) <= ctx->end_ptr) {
(void) memcpy(&num, ctx->ptr, sizeof (short));
ctx->ptr += sizeof (short);
} else {
ctx->status = ENOSPC;
}
}
return (num);
}
void
smb_dr_put_ushort(smb_dr_ctx_t *ctx, unsigned short num)
{
smb_dr_put_short(ctx, (short)num);
}
unsigned short
smb_dr_get_ushort(smb_dr_ctx_t *ctx)
{
return ((unsigned short)smb_dr_get_short(ctx));
}
void
smb_dr_put_word(smb_dr_ctx_t *ctx, WORD num)
{
smb_dr_put_ushort(ctx, num);
}
WORD
smb_dr_get_word(smb_dr_ctx_t *ctx)
{
return (smb_dr_get_ushort(ctx));
}
void
smb_dr_put_BYTE(smb_dr_ctx_t *ctx, BYTE byte)
{
if (ctx->status == 0) {
if (ctx->ptr + sizeof (BYTE) <= ctx->end_ptr) {
(void) memcpy(ctx->ptr, &byte, sizeof (BYTE));
ctx->ptr += sizeof (BYTE);
} else {
ctx->status = ENOSPC;
}
}
}
BYTE
smb_dr_get_BYTE(smb_dr_ctx_t *ctx)
{
BYTE byte = 0;
if (ctx->status == 0) {
if (ctx->ptr + sizeof (BYTE) <= ctx->end_ptr) {
(void) memcpy(&byte, ctx->ptr, sizeof (BYTE));
ctx->ptr += sizeof (BYTE);
} else {
ctx->status = ENOSPC;
}
}
return (byte);
}
void
smb_dr_put_buf(smb_dr_ctx_t *ctx, unsigned char *start, int len)
{
smb_dr_put_int32(ctx, len);
if (ctx->status == 0) {
if (ctx->ptr + len <= ctx->end_ptr) {
(void) memcpy(ctx->ptr, start, len);
ctx->ptr += len;
} else {
ctx->status = ENOSPC;
}
}
}
int
smb_dr_get_buf(smb_dr_ctx_t *ctx, unsigned char *buf, int bufsize)
{
int len = -1;
if (!buf)
return (-1);
len = smb_dr_get_int32(ctx);
if (ctx->status == 0) {
if (bufsize < len) {
ctx->status = ENOSPC;
return (-2);
}
if (ctx->ptr + len <= ctx->end_ptr) {
(void) memcpy(buf, ctx->ptr, len);
ctx->ptr += len;
} else {
ctx->status = ENOSPC;
return (-3);
}
}
return (len);
}
void
smb_dr_get_share(smb_dr_ctx_t *ctx, smb_share_t *si)
{
if (ctx->status == 0) {
if (smb_dr_get_int32(ctx)) {
(void) memcpy(si, ctx->ptr, sizeof (smb_share_t));
ctx->ptr += sizeof (smb_share_t);
} else {
bzero(si, sizeof (smb_share_t));
}
} else {
bzero(si, sizeof (smb_share_t));
}
}
void
smb_dr_put_share(smb_dr_ctx_t *ctx, smb_share_t *si)
{
if (si) {
smb_dr_put_int32(ctx, 1);
if (ctx->ptr + sizeof (smb_share_t) <= ctx->end_ptr) {
(void) memcpy(ctx->ptr, si, sizeof (smb_share_t));
ctx->ptr += sizeof (smb_share_t);
} else {
ctx->status = ENOSPC;
}
} else {
smb_dr_put_int32(ctx, 0);
}
}