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
|
/*
* 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; version 2 of the License.
*
* 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <stdint.h>
#include "common.h"
size_t bgets(struct buffer *input, void *output, size_t len)
{
len = input->size < len ? input->size : len;
memmove(output, input->data, len);
input->data += len;
input->size -= len;
return len;
}
size_t bputs(struct buffer *b, const void *data, size_t len)
{
memmove(&b->data[b->size], data, len);
b->size += len;
return len;
}
/* The assumption in all this code is that we're given a pointer to enough data.
* Hence, we do not check for underflow.
*/
static uint8_t get8(struct buffer *input)
{
uint8_t ret = *input->data++;
input->size--;
return ret;
}
static uint16_t get16be(struct buffer *input)
{
uint16_t ret;
ret = get8(input) << 8;
ret |= get8(input);
return ret;
}
static uint32_t get32be(struct buffer *input)
{
uint32_t ret;
ret = get16be(input) << 16;
ret |= get16be(input);
return ret;
}
static uint64_t get64be(struct buffer *input)
{
uint64_t ret;
ret = get32be(input);
ret <<= 32;
ret |= get32be(input);
return ret;
}
static void put8(struct buffer *input, uint8_t val)
{
input->data[input->size] = val;
input->size++;
}
static void put16be(struct buffer *input, uint16_t val)
{
put8(input, val >> 8);
put8(input, val);
}
static void put32be(struct buffer *input, uint32_t val)
{
put16be(input, val >> 16);
put16be(input, val);
}
static void put64be(struct buffer *input, uint64_t val)
{
put32be(input, val >> 32);
put32be(input, val);
}
static uint16_t get16le(struct buffer *input)
{
uint16_t ret;
ret = get8(input);
ret |= get8(input) << 8;
return ret;
}
static uint32_t get32le(struct buffer *input)
{
uint32_t ret;
ret = get16le(input);
ret |= get16le(input) << 16;
return ret;
}
static uint64_t get64le(struct buffer *input)
{
uint64_t ret;
uint32_t low;
low = get32le(input);
ret = get32le(input);
ret <<= 32;
ret |= low;
return ret;
}
static void put16le(struct buffer *input, uint16_t val)
{
put8(input, val);
put8(input, val >> 8);
}
static void put32le(struct buffer *input, uint32_t val)
{
put16le(input, val);
put16le(input, val >> 16);
}
static void put64le(struct buffer *input, uint64_t val)
{
put32le(input, val);
put32le(input, val >> 32);
}
struct xdr xdr_be = {
get8, get16be, get32be, get64be,
put8, put16be, put32be, put64be
};
struct xdr xdr_le = {
get8, get16le, get32le, get64le,
put8, put16le, put32le, put64le
};
|
