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Fix naming of created interface

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Previously it was not possible to create interfaces with names
containing whitespaces (or other special characters).
This commit is contained in:
Max Moser 2018-04-05 19:32:34 +02:00
parent 2470f6ad1f
commit b5757b8502
2 changed files with 39 additions and 3 deletions
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2
shared/nm-service-defines.h
View File

@ -41,7 +41,7 @@
#define NM_WG_KEY_PUBLIC_KEY "peer-public-key"
#define NM_WG_KEY_ALLOWED_IPS "peer-allowed-ips"
#define NM_WG_KEY_ENDPOINT "peer-endpoint"
#define NM_WG_KEY_PRESHARED_KEY "preshared-key"
#define NM_WG_KEY_PRESHARED_KEY "peer-preshared-key"
#define NM_OPENVPN_KEY_AUTH "auth"
#define NM_OPENVPN_KEY_CA "ca"

40
src/nm-wireguard-service.c
View File

@ -153,6 +153,37 @@ wg_quick_find_exepath (void)
return NULL;
}
// create a valid interface name from the specified string
// this allocates memory which should be freed after usage
//
// wg-quick uses the following regular expression to check the interface name
// for validity:
// [a-zA-Z0-9_=+.-]{1,15}
static gchar *
create_interface_name_from_string(const char *str)
{
int i;
int len = MIN(strlen(str), 15);
char ch;
gchar *interface_name = g_strndup(str, len);
for(i = 0; i < len; i++){
ch = interface_name[i];
if(!g_ascii_isalnum(ch) &&
(ch != '_') &&
(ch != '=') &&
(ch != '+') &&
(ch != '.') &&
(ch != '-')){
// if we come across an invalid character, let's replace it with '-'
interface_name[i] = '-';
}
}
return interface_name;
}
/*****************************************************************************/
// disconnect from the current connection
@ -318,6 +349,7 @@ set_config(NMVpnServicePlugin *plugin, NMConnection *connection)
GVariant *config, *ip4config, *ip6config;
GVariant *val;
const char *setting;
const gchar *if_name;
guint64 subnet = 24;
gboolean has_ip4 = FALSE;
gboolean has_ip6 = FALSE;
@ -381,9 +413,11 @@ set_config(NMVpnServicePlugin *plugin, NMConnection *connection)
g_variant_builder_add(&ip4builder, "{sv}", NM_VPN_PLUGIN_IP4_CONFIG_NEVER_DEFAULT, val);
g_variant_builder_add(&ip6builder, "{sv}", NM_VPN_PLUGIN_IP6_CONFIG_NEVER_DEFAULT, val);
val = g_variant_new_string(nm_connection_get_id(connection));
if_name = create_interface_name_from_string(nm_connection_get_id(connection));
val = g_variant_new_string(if_name);
g_variant_builder_add(&builder, "{sv}", NM_VPN_PLUGIN_CONFIG_TUNDEV, val);
g_variant_builder_add(&ip4builder, "{sv}", NM_VPN_PLUGIN_IP4_CONFIG_TUNDEV, val);
g_free((gchar *)if_name);
setting = get_setting(s_vpn, NM_WG_KEY_ADDR_IP6);
if(setting){
@ -442,6 +476,7 @@ connect_common(NMVpnServicePlugin *plugin,
NMWireguardPluginPrivate *priv = NM_WIREGUARD_PLUGIN_GET_PRIVATE(plugin);
const char *wg_quick_path = wg_quick_find_exepath();
const char *connection_name = nm_connection_get_id(connection);
const gchar *if_name = create_interface_name_from_string(connection_name);
char *command;
int retcode = 1;
char *filename = NULL;
@ -464,7 +499,7 @@ connect_common(NMVpnServicePlugin *plugin,
return FALSE;
}
priv->connection_config = connection_config;
filename = g_strdup_printf("/tmp/%s.conf", connection_name);
filename = g_strdup_printf("/tmp/%s.conf", if_name);
priv->connection_file = filename;
if(!do_export(filename, connection, error)){
@ -484,6 +519,7 @@ connect_common(NMVpnServicePlugin *plugin,
// remove the file and free the command string
g_remove(filename);
g_free(command);
g_free((gchar *)if_name);
set_config(plugin, connection);