1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
/*
Unix SMB/CIFS implementation.
TDR (Trivial Data Representation) helper functions
Based loosely on ndr.c by Andrew Tridgell.
Copyright (C) Jelmer Vernooij 2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "system/network.h"
#define TDR_BASE_MARSHALL_SIZE 1024
#define TDR_PUSH_NEED_BYTES(tdr, n) TDR_CHECK(tdr_push_expand(tdr, tdr->offset+(n)))
#define TDR_PULL_NEED_BYTES(tdr, n) do { \
if ((n) > tdr->length || tdr->offset + (n) > tdr->length) { \
return NT_STATUS_BUFFER_TOO_SMALL; \
} \
} while(0)
#define TDR_BE(tdr) ((tdr)->flags & TDR_FLAG_BIGENDIAN)
#define TDR_SVAL(tdr, ofs) (TDR_BE(tdr)?RSVAL(tdr->data,ofs):SVAL(tdr->data,ofs))
#define TDR_IVAL(tdr, ofs) (TDR_BE(tdr)?RIVAL(tdr->data,ofs):IVAL(tdr->data,ofs))
#define TDR_IVALS(tdr, ofs) (TDR_BE(tdr)?RIVALS(tdr->data,ofs):IVALS(tdr->data,ofs))
#define TDR_SSVAL(tdr, ofs, v) do { if (TDR_BE(tdr)) { RSSVAL(tdr->data,ofs,v); } else SSVAL(tdr->data,ofs,v); } while (0)
#define TDR_SIVAL(tdr, ofs, v) do { if (TDR_BE(tdr)) { RSIVAL(tdr->data,ofs,v); } else SIVAL(tdr->data,ofs,v); } while (0)
#define TDR_SIVALS(tdr, ofs, v) do { if (TDR_BE(tdr)) { RSIVALS(tdr->data,ofs,v); } else SIVALS(tdr->data,ofs,v); } while (0)
struct tdr_pull *tdr_pull_init(TALLOC_CTX *mem_ctx, DATA_BLOB *blob)
{
struct tdr_pull *tdr = talloc(mem_ctx, struct tdr_pull);
tdr->data = blob->data;
tdr->length = blob->length;
tdr->offset = 0;
tdr->flags = 0;
return tdr;
}
struct tdr_push *tdr_push_init(TALLOC_CTX *mem_ctx)
{
return talloc_zero(mem_ctx, struct tdr_push);
}
struct tdr_print *tdr_print_init(TALLOC_CTX *mem_ctx)
{
return talloc_zero(mem_ctx, struct tdr_print);
}
/*
expand the available space in the buffer to 'size'
*/
NTSTATUS tdr_push_expand(struct tdr_push *tdr, uint32_t size)
{
if (tdr->alloc_size >= size) {
return NT_STATUS_OK;
}
tdr->alloc_size += TDR_BASE_MARSHALL_SIZE;
if (size > tdr->alloc_size) {
tdr->length = size;
}
tdr->data = talloc_realloc(tdr, tdr->data, uint8_t, tdr->alloc_size);
return NT_STATUS_NO_MEMORY;
}
NTSTATUS tdr_pull_uint8(struct tdr_pull *tdr, uint8_t *v)
{
TDR_PULL_NEED_BYTES(tdr, 1);
SCVAL(tdr->data, tdr->offset, *v);
tdr->offset += 1;
return NT_STATUS_OK;
}
NTSTATUS tdr_push_uint8(struct tdr_push *tdr, const uint8_t *v)
{
TDR_PUSH_NEED_BYTES(tdr, 1);
SCVAL(tdr->data, tdr->offset, *v);
tdr->offset += 1;
return NT_STATUS_OK;
}
NTSTATUS tdr_print_uint8(struct tdr_print *tdr, const char *name, uint8_t *v)
{
tdr->print(tdr, "%-25s: 0x%02x (%u)", name, *v, *v);
return NT_STATUS_OK;
}
NTSTATUS tdr_pull_uint16(struct tdr_pull *tdr, uint16_t *v)
{
TDR_PULL_NEED_BYTES(tdr, 2);
*v = TDR_SVAL(tdr, tdr->offset);
tdr->offset += 2;
return NT_STATUS_OK;
}
NTSTATUS tdr_push_uint16(struct tdr_push *tdr, const uint16_t *v)
{
TDR_PUSH_NEED_BYTES(tdr, 2);
TDR_SSVAL(tdr, tdr->offset, *v);
tdr->offset += 2;
return NT_STATUS_OK;
}
NTSTATUS tdr_print_uint16(struct tdr_print *tdr, const char *name, uint16_t *v)
{
tdr->print(tdr, "%-25s: 0x%02x (%u)", name, *v, *v);
return NT_STATUS_OK;
}
NTSTATUS tdr_pull_uint32(struct tdr_pull *tdr, uint16_t *v)
{
TDR_PULL_NEED_BYTES(tdr, 4);
*v = TDR_IVAL(tdr, tdr->offset);
tdr->offset += 4;
return NT_STATUS_OK;
}
NTSTATUS tdr_push_uint32(struct tdr_push *tdr, const uint16_t *v)
{
TDR_PUSH_NEED_BYTES(tdr, 4);
TDR_SIVAL(tdr, tdr->offset, *v);
tdr->offset += 4;
return NT_STATUS_OK;
}
NTSTATUS tdr_print_uint32(struct tdr_print *tdr, const char *name, uint32_t *v)
{
tdr->print(tdr, "%-25s: 0x%02x (%u)", name, *v, *v);
return NT_STATUS_OK;
}
NTSTATUS tdr_pull_charset(struct tdr_pull *tdr, char **v, uint32_t length, uint32_t el_size, int chset)
{
int ret;
if (length == -1) {
switch (chset) {
case CH_DOS:
length = ascii_len_n((const char*)tdr->data+tdr->offset, tdr->length-tdr->offset);
break;
case CH_UTF16:
length = utf16_len_n(tdr->data+tdr->offset, tdr->length-tdr->offset);
default:
return NT_STATUS_INVALID_PARAMETER;
}
}
TDR_PULL_NEED_BYTES(tdr, el_size*length);
ret = convert_string_talloc(tdr, chset, CH_UNIX, tdr->data+tdr->offset, el_size*length, (void **)v);
if (ret == -1) {
return NT_STATUS_INVALID_PARAMETER;
}
return NT_STATUS_OK;
}
NTSTATUS tdr_push_charset(struct tdr_push *tdr, const char **v, uint32_t length, uint32_t el_size, int chset)
{
int ret;
TDR_PUSH_NEED_BYTES(tdr, el_size*length);
ret = convert_string(CH_UNIX, chset, *v, length, tdr->data+tdr->offset, el_size*length);
if (ret == -1) {
return NT_STATUS_INVALID_PARAMETER;
}
tdr->offset += ret;
return NT_STATUS_OK;
}
NTSTATUS tdr_print_charset(struct tdr_print *tdr, const char *name, const char **v, uint32_t length, uint32_t el_size, int chset)
{
tdr->print(tdr, "%-25s: %s", name, *v);
return NT_STATUS_OK;
}
/*
pull a ipv4address
*/
NTSTATUS tdr_pull_ipv4address(struct tdr_pull *tdr, const char **address)
{
struct ipv4_addr in;
TDR_CHECK(tdr_pull_uint32(tdr, &in.addr));
in.addr = htonl(in.addr);
*address = talloc_strdup(tdr, sys_inet_ntoa(in));
NT_STATUS_HAVE_NO_MEMORY(*address);
return NT_STATUS_OK;
}
/*
push a ipv4address
*/
NTSTATUS tdr_push_ipv4address(struct tdr_push *tdr, const char **address)
{
uint32_t addr = htonl(interpret_addr(*address));
TDR_CHECK(tdr_push_uint32(tdr, &addr));
return NT_STATUS_OK;
}
/*
print a ipv4address
*/
NTSTATUS tdr_print_ipv4address(struct tdr_print *tdr, const char *name,
const char **address)
{
tdr->print(tdr, "%-25s: %s", name, *address);
return NT_STATUS_OK;
}
|
