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
|
/*
* This file is part of NetSurf, http://netsurf-browser.org/
* Licensed under the GNU General Public License,
* http://www.opensource.org/licenses/gpl-license
* Copyright 2007 Daniel Silverstone <dsilvers@digital-scurf.org>
* Copyright 2007 Rob Kendrick <rjek@netsurf-browser.org>
*/
#include <sys/utsname.h>
#include <stdio.h>
#include <stdlib.h>
#include "desktop/netsurf.h"
#include "utils/log.h"
#include "utils/useragent.h"
static const char *core_user_agent_string = NULL;
#define NETSURF_UA_FORMAT_STRING "NetSurf/%d.%d (%s; %s)"
/**
* Prepare core_user_agent_string with a string suitable for use as a
* user agent in HTTP requests.
*/
static void
build_user_agent(void)
{
struct utsname un;
const char *sysname = "Unknown";
const char *machine = "Unknown";
char *ua_string;
int len;
if (uname(&un) == 0) {
sysname = un.sysname;
machine = un.machine;
}
len = snprintf(NULL, 0, NETSURF_UA_FORMAT_STRING,
netsurf_version_major,
netsurf_version_minor,
sysname,
machine);
ua_string = malloc(len + 1);
if (!ua_string) {
/** \todo this needs handling better */
return;
}
snprintf(ua_string, len + 1,
NETSURF_UA_FORMAT_STRING,
netsurf_version_major,
netsurf_version_minor,
sysname,
machine);
core_user_agent_string = ua_string;
LOG(("Built user agent \"%s\"", core_user_agent_string));
}
/* This is a function so that later we can override it trivially */
const char *
user_agent_string(void)
{
if (core_user_agent_string == NULL)
build_user_agent();
return core_user_agent_string;
}
|
