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
|
#include "util.h"
#include <string.h>
#include <tox/tox.h>
void writechecksum(uint8_t *address)
{
uint8_t *checksum = address + 36;
uint32_t i;
for (i = 0; i < 36; ++i)
checksum[i % 2] ^= address[i];
}
/* From utox/util.c */
void to_hex(char_t *a, const char_t *p, int size)
{
char_t b, c;
const char_t *end = p + size;
while(p != end) {
b = *p++;
c = (b & 0xF);
b = (b >> 4);
if(b < 10) {
*a++ = b + '0';
} else {
*a++ = b - 10 + 'A';
}
if(c < 10) {
*a++ = c + '0';
} else {
*a++ = c - 10 + 'A';
}
}
}
/* From utox/util.c */
void id_to_string(char_t *dest, const char_t *src)
{
to_hex(dest, src, TOX_FRIEND_ADDRESS_SIZE);
}
/* From utox/util.c */
int string_to_id(char_t *w, char_t *a)
{
char_t *end = w + TOX_FRIEND_ADDRESS_SIZE;
while(w != end) {
char_t c, v;
c = *a++;
if(c >= '0' && c <= '9') {
v = (c - '0') << 4;
} else if(c >= 'A' && c <= 'F') {
v = (c - 'A' + 10) << 4;
} else if(c >= 'a' && c <= 'f') {
v = (c - 'a' + 10) << 4;
} else {
return 0;
}
c = *a++;
if(c >= '0' && c <= '9') {
v |= (c - '0');
} else if(c >= 'A' && c <= 'F') {
v |= (c - 'A' + 10);
} else if(c >= 'a' && c <= 'f') {
v |= (c - 'a' + 10);
} else {
return 0;
}
*w++ = v;
}
return 1;
}
/* 0 = success */
int parse_local_port_forward(char *string, int *local_port, char **hostname, int *remote_port)
{
char *lport;
char *host;
char *rport;
lport = strtok(string, ":");
host = strtok(NULL, ":");
rport = strtok(NULL, ":");
if(!lport || !host || !rport)
{
return -1;
}
*local_port = atoi(lport);
*hostname = host;
*remote_port = atoi(rport);
return 0;
}
|
