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
|
/*
* util.c -- Utilities.
*
* This file is donated to the Tox Project.
* Copyright 2013 plutooo
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <time.h>
/* for CLIENT_ID_SIZE */
#include "DHT.h"
#include "util.h"
uint64_t now()
{
return time(NULL);
}
uint64_t random_64b()
{
uint64_t r;
// This is probably not random enough?
r = random_int();
r <<= 32;
r |= random_int();
return r;
}
bool id_eq(uint8_t *dest, uint8_t *src)
{
return memcmp(dest, src, CLIENT_ID_SIZE) == 0;
}
void id_cpy(uint8_t *dest, uint8_t *src)
{
memcpy(dest, src, CLIENT_ID_SIZE);
}
int load_state(load_state_callback_func load_state_callback, void *outer,
uint8_t *data, uint32_t length, uint16_t cookie_inner)
{
if (!load_state_callback || !data) {
#ifdef DEBUG
fprintf(stderr, "load_state() called with invalid args.\n");
#endif
return -1;
}
uint16_t type;
uint32_t length_sub, cookie_type;
uint32_t size32 = sizeof(uint32_t), size_head = size32 * 2;
while (length >= size_head) {
length_sub = *(uint32_t *)data;
cookie_type = *(uint32_t *)(data + size32);
data += size_head;
length -= size_head;
if (length < length_sub) {
/* file truncated */
#ifdef DEBUG
fprintf(stderr, "state file too short: %u < %u\n", length, length_sub);
#endif
return -1;
}
if ((cookie_type >> 16) != cookie_inner) {
/* something is not matching up in a bad way, give up */
#ifdef DEBUG
fprintf(stderr, "state file garbeled: %04hx != %04hx\n", (cookie_type >> 16), cookie_inner);
#endif
return -1;
}
type = cookie_type & 0xFFFF;
if (-1 == load_state_callback(outer, data, length_sub, type))
return -1;
data += length_sub;
length -= length_sub;
}
return length == 0 ? 0 : -1;
};
#ifdef LOGGING
time_t starttime = 0;
size_t logbufferprelen = 0;
char *logbufferpredata = NULL;
char *logbufferprehead = NULL;
char logbuffer[512];
static FILE *logfile = NULL;
void loginit(uint16_t port)
{
if (logfile)
fclose(logfile);
if (!starttime)
starttime = now();
struct tm *tm = localtime(&starttime);
if (strftime(logbuffer + 32, sizeof(logbuffer) - 32, "%F %T", tm))
sprintf(logbuffer, "%u-%s.log", ntohs(port), logbuffer + 32);
else
sprintf(logbuffer, "%u-%lu.log", ntohs(port), starttime);
logfile = fopen(logbuffer, "w");
if (logbufferpredata) {
if (logfile)
fprintf(logfile, "%s", logbufferpredata);
free(logbufferpredata);
logbufferpredata = NULL;
}
};
void loglog(char *text)
{
if (logfile) {
fprintf(logfile, "%4u %s", (uint32_t)(now() - starttime), text);
fflush(logfile);
return;
}
/* log messages before file was opened: store */
size_t len = strlen(text);
if (!starttime) {
starttime = now();
logbufferprelen = 1024 + len - (len % 1024);
logbufferpredata = malloc(logbufferprelen);
logbufferprehead = logbufferpredata;
}
/* loginit() called meanwhile? (but failed to open) */
if (!logbufferpredata)
return;
if (len + logbufferprehead - logbufferpredata + 16U < logbufferprelen) {
size_t logpos = logbufferprehead - logbufferpredata;
size_t lennew = logbufferprelen * 1.4;
logbufferpredata = realloc(logbufferpredata, lennew);
logbufferprehead = logbufferpredata + logpos;
logbufferprelen = lennew;
}
int written = sprintf(logbufferprehead, "%4u %s", (uint32_t)(now() - starttime), text);
logbufferprehead += written;
}
void logexit()
{
if (logfile) {
fclose(logfile);
logfile = NULL;
}
};
#endif
|
