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
|
/* SPDX-FileCopyrightText: 2023 Greenbone AG
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/**
* @file user_agent.c
* @brief Functions to set and get the User-Agent.
*/
#include "user_agent.h"
#include "ipc_openvas.h"
#include "plugutils.h" /* plug_get_host_fqdn */
#include "vendorversion.h"
#include <glib.h>
#include <gvm/base/prefs.h> /* for prefs_get */
#undef G_LOG_DOMAIN
/**
* @brief GLib logging domain.
*/
#define G_LOG_DOMAIN "lib misc"
/**
* @brief user-agent, or NULL.
*/
static gchar *user_agent = NULL;
static int
send_user_agent_via_ipc (struct ipc_context *ipc_context)
{
struct ipc_data *ua = NULL;
const char *json = NULL;
int ret = 0;
ua = ipc_data_type_from_user_agent (user_agent, strlen (user_agent));
json = ipc_data_to_json (ua);
ipc_data_destroy (&ua);
ret = ipc_send (ipc_context, IPC_MAIN, json, strlen (json));
if (-1 == ret)
{
g_warning ("Unable to send %s to host process", user_agent);
}
return ret;
}
/**
* @brief Create and set the global User-Agent variable.
*
* @description Gets the User-Agent from the globals_settings.nasl
* script preferences. If it is not set, it uses the Vendor version.
* In case that there is no Vendor version, it creates one with a fix string
* and the nasl library version.
*/
static void
user_agent_create (void)
{
gchar *ua = NULL;
ua = get_plugin_preference ("1.3.6.1.4.1.25623.1.0.12288", "HTTP User-Agent",
-1);
if (!ua || strlen (g_strstrip (ua)) == 0)
{
g_free (ua);
if (!vendor_version_get () || *vendor_version_get () == '\0')
ua = g_strdup_printf ("Mozilla/5.0 [en] (X11, U; OpenVAS-VT %s)",
OPENVAS_MISC_VERSION);
else
ua = g_strdup_printf ("Mozilla/5.0 [en] (X11, U; %s)",
vendor_version_get ());
}
user_agent = ua;
}
/**
* @brief Set user-agent
*
* Set the global user agent.
* This function overwrite the existing UA.
* Null or empty string are not allowed.
*
* @param[in] ua user-agent to be set.
*
* Return the old User-Agent. It must be free by the caller
*/
gchar *
user_agent_set (const gchar *ua)
{
gchar *ua_aux = NULL;
ua_aux = g_strdup (user_agent);
if (ua != NULL && ua[0] != '\0')
{
g_free (user_agent);
user_agent = g_strdup (ua);
}
return ua_aux;
}
/**
* @brief Get user-agent.
*
* param[in] ipc_context IPC context for sending data to the parent process
* param[out] useragent the user agent if any set or an empty string.
*
* @return 0 on success, -1 on error when sending the message, -2 if the context
* does not exists
*/
int
user_agent_get (struct ipc_context *ipc_context, char **useragent)
{
int ret = 0;
if (!user_agent || user_agent[0] == '\0')
{
user_agent_create ();
ret = send_user_agent_via_ipc (ipc_context);
}
*useragent = user_agent ? g_strdup (user_agent) : "";
return ret;
}
|
