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network-manager-wireguard-u.../auth-dialog/main.c

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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* NetworkManager Wireless Applet -- Display wireless access points and allow user control
*
* Dan Williams <dcbw@redhat.com>
* Tim Niemueller <tim@niemueller.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* (C) Copyright 2004 - 2008 Red Hat, Inc.
* 2005 Tim Niemueller [www.niemueller.de]
*/
#include "nm-default.h"
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <gtk/gtk.h>
#include <libsecret/secret.h>
#include <nma-vpn-password-dialog.h>
#include "utils.h"
#define KEYRING_UUID_TAG "connection-uuid"
#define KEYRING_SN_TAG "setting-name"
#define KEYRING_SK_TAG "setting-key"
static const SecretSchema network_manager_secret_schema = {
"org.freedesktop.NetworkManager.Connection",
SECRET_SCHEMA_DONT_MATCH_NAME,
{
{ KEYRING_UUID_TAG, SECRET_SCHEMA_ATTRIBUTE_STRING },
{ KEYRING_SN_TAG, SECRET_SCHEMA_ATTRIBUTE_STRING },
{ KEYRING_SK_TAG, SECRET_SCHEMA_ATTRIBUTE_STRING },
{ NULL, 0 },
}
};
#define UI_KEYFILE_GROUP "VPN Plugin UI"
static char *
keyring_lookup_secret (const char *uuid, const char *secret_name)
{
GHashTable *attrs;
GList *list;
char *secret = NULL;
attrs = secret_attributes_build (&network_manager_secret_schema,
KEYRING_UUID_TAG, uuid,
KEYRING_SN_TAG, NM_SETTING_VPN_SETTING_NAME,
KEYRING_SK_TAG, secret_name,
NULL);
list = secret_service_search_sync (NULL, &network_manager_secret_schema, attrs,
SECRET_SEARCH_ALL | SECRET_SEARCH_UNLOCK | SECRET_SEARCH_LOAD_SECRETS,
NULL, NULL);
if (list && list->data) {
SecretItem *item = list->data;
SecretValue *value = secret_item_get_secret (item);
if (value) {
secret = g_strdup (secret_value_get (value, NULL));
secret_value_unref (value);
}
}
g_list_free_full (list, g_object_unref);
g_hash_table_unref (attrs);
return secret;
}
/*****************************************************************/
typedef void (*NoSecretsRequiredFunc) (void);
/* Returns TRUE on success, FALSE on cancel */
typedef gboolean (*AskUserFunc) (const char *vpn_name,
const char *prompt,
gboolean need_password,
const char *existing_password,
char **out_new_password,
gboolean need_certpass,
const char *existing_certpass,
char **out_new_certpass,
gboolean need_proxypass,
const char *existing_proxypass,
char **out_new_proxypass);
typedef void (*FinishFunc) (const char *vpn_name,
const char *prompt,
gboolean allow_interaction,
gboolean need_password,
const char *password,
gboolean need_certpass,
const char *certpass,
gboolean need_proxypass,
const char *proxypass);
/*****************************************************************/
/* External UI mode stuff */
static void
keyfile_add_entry_info (GKeyFile *keyfile,
const gchar *key,
const gchar *value,
const gchar *label,
gboolean is_secret,
gboolean should_ask)
{
g_key_file_set_string (keyfile, key, "Value", value);
g_key_file_set_string (keyfile, key, "Label", label);
g_key_file_set_boolean (keyfile, key, "IsSecret", is_secret);
g_key_file_set_boolean (keyfile, key, "ShouldAsk", should_ask);
}
static void
keyfile_print_stdout (GKeyFile *keyfile)
{
gchar *data;
gsize length;
data = g_key_file_to_data (keyfile, &length, NULL);
fputs (data, stdout);
g_free (data);
}
static void
eui_no_secrets_required (void)
{
GKeyFile *keyfile;
keyfile = g_key_file_new ();
g_key_file_set_integer (keyfile, UI_KEYFILE_GROUP, "Version", 2);
keyfile_add_entry_info (keyfile, NM_OPENVPN_KEY_NOSECRET, "true", "", TRUE, FALSE);
keyfile_print_stdout (keyfile);
g_key_file_unref (keyfile);
}
static void
eui_finish (const char *vpn_name,
const char *prompt,
gboolean allow_interaction,
gboolean need_password,
const char *existing_password,
gboolean need_certpass,
const char *existing_certpass,
gboolean need_proxypass,
const char *existing_proxypass)
{
GKeyFile *keyfile;
char *title;
keyfile = g_key_file_new ();
g_key_file_set_integer (keyfile, UI_KEYFILE_GROUP, "Version", 2);
g_key_file_set_string (keyfile, UI_KEYFILE_GROUP, "Description", prompt);
title = g_strdup_printf (_("Authenticate VPN %s"), vpn_name);
g_key_file_set_string (keyfile, UI_KEYFILE_GROUP, "Title", title);
g_free (title);
keyfile_add_entry_info (keyfile,
NM_OPENVPN_KEY_PASSWORD,
existing_password ? existing_password : "",
_("Password:"),
TRUE,
need_password && allow_interaction);
keyfile_add_entry_info (keyfile,
NM_OPENVPN_KEY_CERTPASS,
existing_certpass ? existing_certpass : "",
_("Certificate password:"),
TRUE,
need_certpass && allow_interaction);
keyfile_add_entry_info (keyfile,
NM_OPENVPN_KEY_HTTP_PROXY_PASSWORD,
existing_proxypass ? existing_proxypass : "",
_("HTTP proxy password:"),
TRUE,
need_proxypass && allow_interaction);
keyfile_print_stdout (keyfile);
g_key_file_unref (keyfile);
}
/*****************************************************************/
static void
std_no_secrets_required (void)
{
printf ("%s\n%s\n\n\n", NM_OPENVPN_KEY_NOSECRET, "true");
}
static gboolean
std_ask_user (const char *vpn_name,
const char *prompt,
gboolean need_password,
const char *existing_password,
char **out_new_password,
gboolean need_certpass,
const char *existing_certpass,
char **out_new_certpass,
gboolean need_proxypass,
const char *existing_proxypass,
char **out_new_proxypass)
{
NMAVpnPasswordDialog *dialog;
gboolean success = FALSE;
g_return_val_if_fail (vpn_name != NULL, FALSE);
g_return_val_if_fail (prompt != NULL, FALSE);
g_return_val_if_fail (out_new_password != NULL, FALSE);
g_return_val_if_fail (out_new_certpass != NULL, FALSE);
g_return_val_if_fail (out_new_proxypass != NULL, FALSE);
dialog = NMA_VPN_PASSWORD_DIALOG (nma_vpn_password_dialog_new (_("Authenticate VPN"), prompt, NULL));
/* pre-fill dialog with existing passwords */
nma_vpn_password_dialog_set_show_password (dialog, need_password);
if (need_password)
nma_vpn_password_dialog_set_password (dialog, existing_password);
nma_vpn_password_dialog_set_show_password_secondary (dialog, need_certpass);
if (need_certpass) {
nma_vpn_password_dialog_set_password_secondary_label (dialog, _("Certificate pass_word:") );
nma_vpn_password_dialog_set_password_secondary (dialog, existing_certpass);
}
nma_vpn_password_dialog_set_show_password_ternary (dialog, need_proxypass);
if (need_proxypass) {
nma_vpn_password_dialog_set_password_ternary_label (dialog, _("_HTTP proxy password:"));
nma_vpn_password_dialog_set_password_ternary (dialog, existing_proxypass);
}
gtk_widget_show (GTK_WIDGET (dialog));
if (nma_vpn_password_dialog_run_and_block (dialog)) {
if (need_password)
*out_new_password = g_strdup (nma_vpn_password_dialog_get_password (dialog));
if (need_certpass)
*out_new_certpass = g_strdup (nma_vpn_password_dialog_get_password_secondary (dialog));
if (need_proxypass)
*out_new_proxypass = g_strdup (nma_vpn_password_dialog_get_password_ternary (dialog));
success = TRUE;
}
gtk_widget_destroy (GTK_WIDGET (dialog));
return success;
}
static void
wait_for_quit (void)
{
GString *str;
char c;
ssize_t n;
time_t start;
str = g_string_sized_new (10);
start = time (NULL);
do {
errno = 0;
n = read (0, &c, 1);
if (n == 0 || (n < 0 && errno == EAGAIN))
g_usleep (G_USEC_PER_SEC / 10);
else if (n == 1) {
g_string_append_c (str, c);
if (strstr (str->str, "QUIT") || (str->len > 10))
break;
} else
break;
} while (time (NULL) < start + 20);
g_string_free (str, TRUE);
}
static void
std_finish (const char *vpn_name,
const char *prompt,
gboolean allow_interaction,
gboolean need_password,
const char *password,
gboolean need_certpass,
const char *certpass,
gboolean need_proxypass,
const char *proxypass)
{
/* Send the passwords back to our parent */
if (password)
printf ("%s\n%s\n", NM_OPENVPN_KEY_PASSWORD, password);
if (certpass)
printf ("%s\n%s\n", NM_OPENVPN_KEY_CERTPASS, certpass);
if (proxypass)
printf ("%s\n%s\n", NM_OPENVPN_KEY_HTTP_PROXY_PASSWORD, proxypass);
printf ("\n\n");
/* for good measure, flush stdout since Kansas is going Bye-Bye */
fflush (stdout);
/* Wait for quit signal */
wait_for_quit ();
}
/*****************************************************************/
static void
get_existing_passwords (GHashTable *vpn_data,
GHashTable *existing_secrets,
const char *vpn_uuid,
gboolean need_password,
gboolean need_certpass,
gboolean need_proxypass,
char **out_password,
char **out_certpass,
char **out_proxypass)
{
NMSettingSecretFlags pw_flags = NM_SETTING_SECRET_FLAG_NONE;
NMSettingSecretFlags cp_flags = NM_SETTING_SECRET_FLAG_NONE;
NMSettingSecretFlags proxy_flags = NM_SETTING_SECRET_FLAG_NONE;
g_return_if_fail (out_password != NULL);
g_return_if_fail (out_certpass != NULL);
g_return_if_fail (out_proxypass != NULL);
nm_vpn_service_plugin_get_secret_flags (vpn_data, NM_OPENVPN_KEY_PASSWORD, &pw_flags);
if (need_password) {
if (!(pw_flags & NM_SETTING_SECRET_FLAG_NOT_SAVED)) {
*out_password = g_strdup (g_hash_table_lookup (existing_secrets, NM_OPENVPN_KEY_PASSWORD));
if (!*out_password)
*out_password = keyring_lookup_secret (vpn_uuid, NM_OPENVPN_KEY_PASSWORD);
}
}
nm_vpn_service_plugin_get_secret_flags (vpn_data, NM_OPENVPN_KEY_CERTPASS, &cp_flags);
if (need_certpass) {
if (!(cp_flags & NM_SETTING_SECRET_FLAG_NOT_SAVED)) {
*out_certpass = g_strdup (g_hash_table_lookup (existing_secrets, NM_OPENVPN_KEY_CERTPASS));
if (!*out_certpass)
*out_certpass = keyring_lookup_secret (vpn_uuid, NM_OPENVPN_KEY_CERTPASS);
}
}
nm_vpn_service_plugin_get_secret_flags (vpn_data, NM_OPENVPN_KEY_HTTP_PROXY_PASSWORD, &proxy_flags);
if (need_proxypass) {
if (!(proxy_flags & NM_SETTING_SECRET_FLAG_NOT_SAVED)) {
*out_proxypass = g_strdup (g_hash_table_lookup (existing_secrets, NM_OPENVPN_KEY_HTTP_PROXY_PASSWORD));
if (!*out_proxypass)
*out_proxypass = keyring_lookup_secret (vpn_uuid, NM_OPENVPN_KEY_HTTP_PROXY_PASSWORD);
}
}
}
#define VPN_MSG_TAG "x-vpn-message:"
static char *
get_passwords_required (GHashTable *data,
char **hints,
gboolean *out_need_password,
gboolean *out_need_certpass,
gboolean *out_need_proxypass)
{
const char *ctype, *val;
NMSettingSecretFlags flags;
char *prompt = NULL;
char **iter;
/* If hints are given, then always ask for what the hints require */
if (hints && g_strv_length (hints)) {
for (iter = hints; iter && *iter; iter++) {
if (!prompt && g_str_has_prefix (*iter, VPN_MSG_TAG))
prompt = g_strdup (*iter + strlen (VPN_MSG_TAG));
else if (strcmp (*iter, NM_OPENVPN_KEY_PASSWORD) == 0)
*out_need_password = TRUE;
else if (strcmp (*iter, NM_OPENVPN_KEY_CERTPASS) == 0)
*out_need_certpass = TRUE;
else if (strcmp (*iter, NM_OPENVPN_KEY_HTTP_PROXY_PASSWORD) == 0)
*out_need_proxypass = TRUE;
}
return prompt;
}
ctype = g_hash_table_lookup (data, NM_OPENVPN_KEY_CONNECTION_TYPE);
g_return_val_if_fail (ctype != NULL, NULL);
if (!strcmp (ctype, NM_OPENVPN_CONTYPE_TLS) || !strcmp (ctype, NM_OPENVPN_CONTYPE_PASSWORD_TLS)) {
/* Normal user password */
flags = NM_SETTING_SECRET_FLAG_NONE;
nm_vpn_service_plugin_get_secret_flags (data, NM_OPENVPN_KEY_PASSWORD, &flags);
if ( !strcmp (ctype, NM_OPENVPN_CONTYPE_PASSWORD_TLS)
&& !(flags & NM_SETTING_SECRET_FLAG_NOT_REQUIRED))
*out_need_password = TRUE;
/* Encrypted private key password */
val = g_hash_table_lookup (data, NM_OPENVPN_KEY_KEY);
if (val)
*out_need_certpass = is_encrypted (val);
} else if (!strcmp (ctype, NM_OPENVPN_CONTYPE_PASSWORD)) {
flags = NM_SETTING_SECRET_FLAG_NONE;
nm_vpn_service_plugin_get_secret_flags (data, NM_OPENVPN_KEY_PASSWORD, &flags);
if (!(flags & NM_SETTING_SECRET_FLAG_NOT_REQUIRED))
*out_need_password = TRUE;
}
val = g_hash_table_lookup (data, NM_OPENVPN_KEY_PROXY_SERVER);
if (val && val[0]) {
flags = NM_SETTING_SECRET_FLAG_NONE;
nm_vpn_service_plugin_get_secret_flags (data, NM_OPENVPN_KEY_HTTP_PROXY_PASSWORD, &flags);
if (!(flags & NM_SETTING_SECRET_FLAG_NOT_REQUIRED))
*out_need_proxypass = TRUE;
}
return NULL;
}
static void
free_secret (char *p)
{
if (p) {
memset (p, 0, strlen (p));
g_free (p);
}
}
int
main (int argc, char *argv[])
{
gboolean retry = FALSE, allow_interaction = FALSE;
gchar *vpn_name = NULL;
gchar *vpn_uuid = NULL;
gchar *vpn_service = NULL;
GHashTable *data = NULL, *secrets = NULL;
gboolean need_password = FALSE, need_certpass = FALSE, need_proxypass = FALSE;
char *existing_password = NULL, *existing_certpass = NULL, *existing_proxypass = NULL;
char *new_password = NULL, *new_certpass = NULL, *new_proxypass = NULL;
char **hints = NULL;
char *prompt = NULL;
gboolean external_ui_mode = FALSE, canceled = FALSE, ask_user = FALSE;
NoSecretsRequiredFunc no_secrets_required_func = NULL;
AskUserFunc ask_user_func = NULL;
FinishFunc finish_func = NULL;
GOptionContext *context;
GOptionEntry entries[] = {
{ "reprompt", 'r', 0, G_OPTION_ARG_NONE, &retry, "Reprompt for passwords", NULL},
{ "uuid", 'u', 0, G_OPTION_ARG_STRING, &vpn_uuid, "UUID of VPN connection", NULL},
{ "name", 'n', 0, G_OPTION_ARG_STRING, &vpn_name, "Name of VPN connection", NULL},
{ "service", 's', 0, G_OPTION_ARG_STRING, &vpn_service, "VPN service type", NULL},
{ "allow-interaction", 'i', 0, G_OPTION_ARG_NONE, &allow_interaction, "Allow user interaction", NULL},
{ "external-ui-mode", 0, 0, G_OPTION_ARG_NONE, &external_ui_mode, "External UI mode", NULL},
{ "hint", 't', 0, G_OPTION_ARG_STRING_ARRAY, &hints, "Hints from the VPN plugin", NULL},
{ NULL }
};
bindtextdomain (GETTEXT_PACKAGE, NULL);
bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
textdomain (GETTEXT_PACKAGE);
gtk_init (&argc, &argv);
context = g_option_context_new ("- openvpn auth dialog");
g_option_context_add_main_entries (context, entries, GETTEXT_PACKAGE);
g_option_context_parse (context, &argc, &argv, NULL);
g_option_context_free (context);
if (vpn_uuid == NULL || vpn_name == NULL || vpn_service == NULL) {
fprintf (stderr, "Have to supply ID, name, and service\n");
return EXIT_FAILURE;
}
if (strcmp (vpn_service, NM_VPN_SERVICE_TYPE_OPENVPN) != 0) {
fprintf (stderr, "This dialog only works with the '%s' service\n", NM_VPN_SERVICE_TYPE_OPENVPN);
return EXIT_FAILURE;
}
if (!nm_vpn_service_plugin_read_vpn_details (0, &data, &secrets)) {
fprintf (stderr, "Failed to read '%s' (%s) data and secrets from stdin.\n",
vpn_name, vpn_uuid);
return 1;
}
if (external_ui_mode) {
no_secrets_required_func = eui_no_secrets_required;
finish_func = eui_finish;
} else {
no_secrets_required_func = std_no_secrets_required;
ask_user_func = std_ask_user;
finish_func = std_finish;
}
/* Determine which passwords are actually required, either from hints or
* from looking at the VPN configuration.
*/
prompt = get_passwords_required (data, hints, &need_password, &need_certpass, &need_proxypass);
if (!prompt)
prompt = g_strdup_printf (_("You need to authenticate to access the Virtual Private Network “%s”."), vpn_name);
/* Exit early if we don't need any passwords */
if (!need_password && !need_certpass && !need_proxypass)
no_secrets_required_func ();
else {
get_existing_passwords (data,
secrets,
vpn_uuid,
need_password,
need_certpass,
need_proxypass,
&existing_password,
&existing_certpass,
&existing_proxypass);
if (need_password && !existing_password)
ask_user = TRUE;
if (need_certpass && !existing_certpass)
ask_user = TRUE;
if (need_proxypass && !existing_proxypass)
ask_user = TRUE;
/* If interaction is allowed then ask the user, otherwise pass back
* whatever existing secrets we can find.
*/
if (ask_user_func && allow_interaction && (ask_user || retry)) {
canceled = !ask_user_func (vpn_name,
prompt,
need_password,
existing_password,
&new_password,
need_certpass,
existing_certpass,
&new_certpass,
need_proxypass,
existing_proxypass,
&new_proxypass);
}
if (!canceled) {
finish_func (vpn_name,
prompt,
allow_interaction,
need_password,
new_password ? new_password : existing_password,
need_certpass,
new_certpass ? new_certpass : existing_certpass,
need_proxypass,
new_proxypass ? new_proxypass : existing_proxypass);
}
free_secret (existing_password);
free_secret (existing_certpass);
free_secret (existing_proxypass);
free_secret (new_password);
free_secret (new_certpass);
free_secret (new_proxypass);
}
if (data)
g_hash_table_unref (data);
if (secrets)
g_hash_table_unref (secrets);
if (hints)
g_strfreev (hints);
g_free (prompt);
return canceled ? 1 : 0;
}
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