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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 Fruehauf <malkodan@gmail.com>
- *
- * 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 2013 Dan Fruehauf <malkodan@gmail.com>
- */
- #ifdef HAVE_CONFIG_H
- #include <config.h>
- #endif
- #include <string.h>
- #include <stdlib.h>
- #include <errno.h>
- #include <glib/gi18n.h>
- #include <gtk/gtk.h>
- #include <libsecret/secret.h>
- #include <nm-setting-vpn.h>
- #include <nm-vpn-plugin-utils.h>
- #include <nm-vpn-password-dialog.h>
- #include "src/nm-ssh-service.h"
- #define KEYRING_UUID_TAG "connection-uuid"
- #define KEYRING_SN_TAG "setting-name"
- #define KEYRING_SK_TAG "setting-key"
- #define UI_KEYFILE_GROUP "VPN Plugin UI"
- 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 },
- }
- };
- 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;
- }
- 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 gboolean
- get_secrets (const char *vpn_uuid,
- const char *vpn_name,
- gboolean retry,
- gboolean allow_interaction,
- gboolean external_ui_mode,
- const char *in_pw,
- char **out_pw,
- NMSettingSecretFlags pw_flags)
- {
- NMAVpnPasswordDialog *dialog;
- char *prompt, *pw = NULL;
- const char *new_password = NULL;
- g_return_val_if_fail (vpn_uuid != NULL, FALSE);
- g_return_val_if_fail (vpn_name != NULL, FALSE);
- g_return_val_if_fail (out_pw != NULL, FALSE);
- g_return_val_if_fail (*out_pw == NULL, FALSE);
- /* Get the existing secret, if any */
- if ( !(pw_flags & NM_SETTING_SECRET_FLAG_NOT_SAVED)
- && !(pw_flags & NM_SETTING_SECRET_FLAG_NOT_REQUIRED)) {
- if (in_pw)
- pw = g_strdup (in_pw);
- else
- pw = keyring_lookup_secret (vpn_uuid, NM_SSH_KEY_PASSWORD);
- }
- /* Don't ask if the passwords is unused */
- if (pw_flags & NM_SETTING_SECRET_FLAG_NOT_REQUIRED) {
- g_free (pw);
- return TRUE;
- }
- /* Otherwise, we have no saved password, or the password flags indicated
- * that the password should never be saved.
- */
- prompt = g_strdup_printf (_("You need to authenticate to access the Virtual Private Network '%s'."), vpn_name);
- if (external_ui_mode) {
- GKeyFile *keyfile;
- 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);
- g_key_file_set_string (keyfile, UI_KEYFILE_GROUP, "Title", _("Authenticate VPN"));
- keyfile_add_entry_info (keyfile, NM_SSH_KEY_PASSWORD, pw ? pw : "", _("Password:"), TRUE, allow_interaction);
- keyfile_print_stdout (keyfile);
- g_key_file_unref (keyfile);
- goto out;
- } else if ( allow_interaction == FALSE
- || (!retry && pw && !(pw_flags & NM_SETTING_SECRET_FLAG_NOT_SAVED))) {
- /* If interaction isn't allowed, just return existing secrets.
- * Also, don't ask the user if we don't need a new password (ie, !retry),
- * we have an existing PW, and the password is saved.
- */
- *out_pw = pw;
- g_free (prompt);
- return TRUE;
- }
- dialog = NMA_VPN_PASSWORD_DIALOG (
- nma_vpn_password_dialog_new (_("Authenticate VPN"), prompt, NULL));
- nma_vpn_password_dialog_set_show_password_secondary (dialog, FALSE);
- /* pre-fill dialog with the password */
- if (pw && !(pw_flags & NM_SETTING_SECRET_FLAG_NOT_SAVED))
- nma_vpn_password_dialog_set_password (dialog, pw);
- gtk_widget_show (GTK_WIDGET (dialog));
- if (nma_vpn_password_dialog_run_and_block (dialog)) {
- new_password = nma_vpn_password_dialog_get_password (dialog);
- if (new_password)
- *out_pw = g_strdup (new_password);
- }
- gtk_widget_hide (GTK_WIDGET (dialog));
- gtk_widget_destroy (GTK_WIDGET (dialog));
- out:
- g_free (prompt);
- return TRUE;
- }
- 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);
- }
- int
- main (int argc, char *argv[])
- {
- gboolean retry = FALSE, allow_interaction = FALSE, external_ui_mode = FALSE;
- char *vpn_name = NULL, *vpn_uuid = NULL, *vpn_service = NULL, *password = NULL;
- const char *auth_type, *password_key;
- GHashTable *data = NULL, *secrets = NULL;
- NMSettingSecretFlags pw_flags = NM_SETTING_SECRET_FLAG_NONE;
- 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},
- { NULL }
- };
- bindtextdomain (GETTEXT_PACKAGE, NULL);
- bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
- textdomain (GETTEXT_PACKAGE);
- gtk_init (&argc, &argv);
- context = g_option_context_new ("- ssh 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 || !vpn_service || !vpn_name) {
- fprintf (stderr, "Have to supply ID, name, and service\n");
- return 1;
- }
- if (strncmp (vpn_service, NM_DBUS_SERVICE_SSH, strlen(NM_DBUS_SERVICE_SSH)) != 0) {
- fprintf (stderr, "This dialog only works with the '%s' service\n", NM_DBUS_SERVICE_SSH);
- return 1;
- }
- if (!nm_vpn_plugin_utils_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;
- }
- /* Avoid awkwardness if auth_type equals NULL, which can happen:
- * https://bugzilla.redhat.com/show_bug.cgi?id=1056810 */
- auth_type = g_hash_table_lookup (data, NM_SSH_KEY_AUTH_TYPE);
- if (!auth_type) {
- fprintf (stderr, "Authentication type not specified in configuration\n");
- return 1;
- }
- /* Depending on auth type see if we need a password */
- if (strncmp (auth_type, NM_SSH_AUTH_TYPE_PASSWORD, strlen(NM_SSH_AUTH_TYPE_PASSWORD)) == 0) {
- /* FIXME one day... */
- nm_vpn_plugin_utils_get_secret_flags (secrets, NM_SSH_KEY_PASSWORD, &pw_flags);
- password_key = NM_SSH_KEY_PASSWORD;
- if (!get_secrets (vpn_uuid, vpn_name, retry, allow_interaction, external_ui_mode,
- g_hash_table_lookup (secrets, NM_SSH_KEY_PASSWORD),
- &password,
- pw_flags))
- return 1;
- } else if (strncmp (auth_type, NM_SSH_AUTH_TYPE_KEY, strlen(NM_SSH_AUTH_TYPE_KEY)) == 0) {
- /* FIXME ask for password if key is encrypted */
- } else if (strncmp (auth_type, NM_SSH_AUTH_TYPE_SSH_AGENT, strlen(NM_SSH_AUTH_TYPE_SSH_AGENT)) == 0) {
- /* Probe the SSH agent socket */
- password = g_strdup (getenv (SSH_AUTH_SOCK));
- if (password && strlen (password)) {
- password_key = NM_SSH_KEY_SSH_AUTH_SOCK;
- } else {
- GtkWidget *dialog;
- dialog = gtk_message_dialog_new(NULL,
- GTK_DIALOG_MODAL,
- GTK_MESSAGE_WARNING,
- GTK_BUTTONS_OK,
- _("Couldn't find '%s' environment variable.\n\nIs ssh-agent running?"), SSH_AUTH_SOCK);
- gtk_window_set_title(GTK_WINDOW(dialog), "Warning");
- gtk_dialog_run(GTK_DIALOG(dialog));
- gtk_widget_destroy(dialog);
-
- return 1;
- }
- } else {
- fprintf (stderr, "Unknown authentication method required: '%s'.\n", auth_type);
- return 1;
- }
- if (!external_ui_mode) {
- /* dump the passwords to stdout */
- if (password)
- printf ("%s\n%s\n", password_key, password);
- printf ("\n\n");
- g_free (password);
- /* for good measure, flush stdout since Kansas is going Bye-Bye */
- fflush (stdout);
- /* Wait for quit signal */
- wait_for_quit ();
- }
- if (data)
- g_hash_table_unref (data);
- if (secrets)
- g_hash_table_unref (secrets);
- return 0;
- }
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