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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2013 - 2015 Red Hat, Inc.
*/
/**
* SECTION:nm-vpn-helpers
* @short_description: VPN-related utilities
*/
#include "libnm-client-aux-extern/nm-default-client.h"
#include "nm-vpn-helpers.h"
#include <arpa/inet.h>
#include <net/if.h>
#include "nm-client-utils.h"
#include "nm-utils.h"
#include "libnm-glib-aux/nm-io-utils.h"
#include "libnm-glib-aux/nm-secret-utils.h"
/*****************************************************************************/
NMVpnEditorPlugin *
nm_vpn_get_editor_plugin(const char *service_type, GError **error)
{
NMVpnEditorPlugin *plugin = NULL;
NMVpnPluginInfo *plugin_info;
gs_free_error GError *local = NULL;
g_return_val_if_fail(service_type, NULL);
g_return_val_if_fail(error == NULL || *error == NULL, NULL);
plugin_info = nm_vpn_plugin_info_list_find_by_service(nm_vpn_get_plugin_infos(), service_type);
if (!plugin_info) {
g_set_error(error,
NM_VPN_PLUGIN_ERROR,
NM_VPN_PLUGIN_ERROR_FAILED,
_("unknown VPN plugin \"%s\""),
service_type);
return NULL;
}
plugin = nm_vpn_plugin_info_get_editor_plugin(plugin_info);
if (!plugin)
plugin = nm_vpn_plugin_info_load_editor_plugin(plugin_info, &local);
if (!plugin) {
if (!nm_vpn_plugin_info_get_plugin(plugin_info)
&& nm_vpn_plugin_info_lookup_property(plugin_info,
NM_VPN_PLUGIN_INFO_KF_GROUP_GNOME,
"properties")) {
g_set_error(error,
NM_VPN_PLUGIN_ERROR,
NM_VPN_PLUGIN_ERROR_FAILED,
_("cannot load legacy-only VPN plugin \"%s\" for \"%s\""),
nm_vpn_plugin_info_get_name(plugin_info),
nm_vpn_plugin_info_get_filename(plugin_info));
} else if (g_error_matches(local, G_FILE_ERROR, G_FILE_ERROR_NOENT)) {
g_set_error(
error,
NM_VPN_PLUGIN_ERROR,
NM_VPN_PLUGIN_ERROR_FAILED,
_("cannot load VPN plugin \"%s\" due to missing \"%s\". Missing client plugin?"),
nm_vpn_plugin_info_get_name(plugin_info),
nm_vpn_plugin_info_get_plugin(plugin_info));
} else {
g_set_error(error,
NM_VPN_PLUGIN_ERROR,
NM_VPN_PLUGIN_ERROR_FAILED,
_("failed to load VPN plugin \"%s\": %s"),
nm_vpn_plugin_info_get_name(plugin_info),
local->message);
}
return NULL;
}
return plugin;
}
GSList *
nm_vpn_get_plugin_infos(void)
{
static bool plugins_loaded;
static GSList *plugins = NULL;
if (G_LIKELY(plugins_loaded))
return plugins;
plugins_loaded = TRUE;
plugins = nm_vpn_plugin_info_list_load();
return plugins;
}
gboolean
nm_vpn_supports_ipv6(NMConnection *connection)
{
NMSettingVpn *s_vpn;
const char *service_type;
NMVpnEditorPlugin *plugin;
guint32 capabilities;
s_vpn = nm_connection_get_setting_vpn(connection);
g_return_val_if_fail(s_vpn != NULL, FALSE);
service_type = nm_setting_vpn_get_service_type(s_vpn);
if (!service_type)
return FALSE;
plugin = nm_vpn_get_editor_plugin(service_type, NULL);
if (!plugin)
return FALSE;
capabilities = nm_vpn_editor_plugin_get_capabilities(plugin);
return NM_FLAGS_HAS(capabilities, NM_VPN_EDITOR_PLUGIN_CAPABILITY_IPV6);
}
const NmcVpnPasswordName *
nm_vpn_get_secret_names(const char *service_type)
{
const char *type;
if (!service_type)
return NULL;
if (!NM_STR_HAS_PREFIX(service_type, NM_DBUS_INTERFACE)
|| service_type[NM_STRLEN(NM_DBUS_INTERFACE)] != '.') {
/* all our well-known, hard-coded vpn-types start with NM_DBUS_INTERFACE. */
return NULL;
}
type = service_type + (NM_STRLEN(NM_DBUS_INTERFACE) + 1);
#define _VPN_PASSWORD_LIST(...) \
({ \
static const NmcVpnPasswordName _arr[] = { \
__VA_ARGS__{0}, \
}; \
_arr; \
})
if (NM_IN_STRSET(type, "pptp", "iodine", "ssh", "l2tp", "fortisslvpn")) {
return _VPN_PASSWORD_LIST({"password", N_("Password")}, );
}
if (NM_IN_STRSET(type, "openvpn")) {
return _VPN_PASSWORD_LIST({"password", N_("Password")},
{"cert-pass", N_("Certificate password")},
{"http-proxy-password", N_("HTTP proxy password")}, );
}
if (NM_IN_STRSET(type, "vpnc")) {
return _VPN_PASSWORD_LIST({"Xauth password", N_("Password")},
{"IPSec secret", N_("Group password")}, );
};
if (NM_IN_STRSET(type, "openswan", "libreswan", "strongswan")) {
return _VPN_PASSWORD_LIST({"xauthpassword", N_("Password")},
{"pskvalue", N_("Group password")}, );
};
if (NM_IN_STRSET(type, "openconnect")) {
return _VPN_PASSWORD_LIST({"gateway", N_("Gateway")},
{"cookie", N_("Cookie")},
{"gwcert", N_("Gateway certificate hash")}, );
};
return NULL;
}
static gboolean
_extract_variable_value(char *line, const char *tag, char **value)
{
char *p1, *p2;
if (!g_str_has_prefix(line, tag))
return FALSE;
p1 = line + strlen(tag);
p2 = line + strlen(line) - 1;
if ((*p1 == '\'' || *p1 == '"') && (*p1 == *p2)) {
p1++;
*p2 = '\0';
}
NM_SET_OUT(value, g_strdup(p1));
return TRUE;
}
gboolean
nm_vpn_openconnect_authenticate_helper(const char *host,
char **cookie,
char **gateway,
char **gwcert,
int *status,
GError **error)
{
gs_free char *output = NULL;
gs_free const char **output_v = NULL;
const char *const *iter;
const char *path;
const char *const DEFAULT_PATHS[] = {
"/sbin/",
"/usr/sbin/",
"/usr/local/sbin/",
"/bin/",
"/usr/bin/",
"/usr/local/bin/",
NULL,
};
path = nm_utils_file_search_in_paths("openconnect",
"/usr/sbin/openconnect",
DEFAULT_PATHS,
G_FILE_TEST_IS_EXECUTABLE,
NULL,
NULL,
error);
if (!path)
return FALSE;
if (!g_spawn_sync(NULL,
(char **) NM_MAKE_STRV(path, "--authenticate", host),
NULL,
G_SPAWN_SEARCH_PATH | G_SPAWN_CHILD_INHERITS_STDIN,
NULL,
NULL,
&output,
NULL,
status,
error))
return FALSE;
/* Parse output and set cookie, gateway and gwcert
* output example:
* COOKIE='loremipsum'
* HOST='1.2.3.4'
* FINGERPRINT='sha1:32bac90cf09a722e10ecc1942c67fe2ac8c21e2e'
*/
output_v = nm_strsplit_set_with_empty(output, "\r\n");
for (iter = output_v; iter && *iter; iter++) {
char *s_mutable = (char *) *iter;
_extract_variable_value(s_mutable, "COOKIE=", cookie);
_extract_variable_value(s_mutable, "HOST=", gateway);
_extract_variable_value(s_mutable, "FINGERPRINT=", gwcert);
}
return TRUE;
}
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