gnome-control-center/panels/network/wireless-security/eap-method-tls.c

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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* NetworkManager Applet -- allow user control over networking
*
* Dan Williams <dcbw@redhat.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 2007 - 2010 Red Hat, Inc.
*/
#include "config.h"
#include <glib/gi18n.h>
#include <ctype.h>
#include <string.h>
#include <nm-setting-connection.h>
#include <nm-setting-8021x.h>
#include "eap-method.h"
#include "wireless-security.h"
#include "helpers.h"
struct _EAPMethodTLS {
EAPMethod parent;
gboolean new_connection;
};
static void
show_toggled_cb (GtkCheckButton *button, EAPMethod *method)
{
GtkWidget *widget;
gboolean visible;
widget = GTK_WIDGET (gtk_builder_get_object (method->builder, "eap_tls_private_key_password_entry"));
g_assert (widget);
visible = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (button));
gtk_entry_set_visibility (GTK_ENTRY (widget), visible);
}
static gboolean
validate (EAPMethod *parent)
{
NMSetting8021xCKFormat format = NM_SETTING_802_1X_CK_FORMAT_UNKNOWN;
GtkWidget *widget;
const char *password, *identity;
gboolean ret = TRUE;
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_identity_entry"));
g_assert (widget);
identity = gtk_entry_get_text (GTK_ENTRY (widget));
if (!identity || !strlen (identity)) {
widget_set_error (widget);
ret = FALSE;
} else {
widget_unset_error (widget);
}
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_ca_cert_button"));
if (!eap_method_validate_filepicker (parent->builder, "eap_tls_ca_cert_button", TYPE_CA_CERT, NULL, NULL)) {
widget_set_error (widget);
ret = FALSE;
} else {
widget_unset_error (widget);
}
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_private_key_password_entry"));
g_assert (widget);
password = gtk_entry_get_text (GTK_ENTRY (widget));
if (!password || !strlen (password)) {
widget_set_error (widget);
ret = FALSE;
} else {
widget_unset_error (widget);
}
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_private_key_button"));
if (!eap_method_validate_filepicker (parent->builder,
"eap_tls_private_key_button",
TYPE_PRIVATE_KEY,
password,
&format)) {
widget_set_error (widget);
ret = FALSE;
}
if (format != NM_SETTING_802_1X_CK_FORMAT_PKCS12) {
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_user_cert_button"));
if (!eap_method_validate_filepicker (parent->builder, "eap_tls_user_cert_button", TYPE_CLIENT_CERT, NULL, NULL)) {
widget_set_error (widget);
ret = FALSE;
} else {
widget_unset_error (widget);
}
}
return ret;
}
static void
add_to_size_group (EAPMethod *parent, GtkSizeGroup *group)
{
GtkWidget *widget;
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_identity_label"));
g_assert (widget);
gtk_size_group_add_widget (group, widget);
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_user_cert_label"));
g_assert (widget);
gtk_size_group_add_widget (group, widget);
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_ca_cert_label"));
g_assert (widget);
gtk_size_group_add_widget (group, widget);
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_private_key_label"));
g_assert (widget);
gtk_size_group_add_widget (group, widget);
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_private_key_password_label"));
g_assert (widget);
gtk_size_group_add_widget (group, widget);
}
static void
fill_connection (EAPMethod *parent, NMConnection *connection)
{
EAPMethodTLS *method = (EAPMethodTLS *) parent;
NMSetting8021xCKFormat format = NM_SETTING_802_1X_CK_FORMAT_UNKNOWN;
NMSetting8021x *s_8021x;
GtkWidget *widget;
char *ca_filename, *pk_filename, *cc_filename;
const char *password = NULL;
GError *error = NULL;
const char *secret_flag_prop = NULL;
s_8021x = nm_connection_get_setting_802_1x (connection);
g_assert (s_8021x);
if (parent->phase2)
g_object_set (s_8021x, NM_SETTING_802_1X_PHASE2_AUTH, "tls", NULL);
else
nm_setting_802_1x_add_eap_method (s_8021x, "tls");
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_identity_entry"));
g_assert (widget);
g_object_set (s_8021x, NM_SETTING_802_1X_IDENTITY, gtk_entry_get_text (GTK_ENTRY (widget)), NULL);
/* TLS private key */
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_private_key_password_entry"));
g_assert (widget);
password = gtk_entry_get_text (GTK_ENTRY (widget));
g_assert (password);
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_private_key_button"));
g_assert (widget);
pk_filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
g_assert (pk_filename);
if (parent->phase2) {
if (!nm_setting_802_1x_set_phase2_private_key (s_8021x, pk_filename, password, NM_SETTING_802_1X_CK_SCHEME_PATH, &format, &error)) {
g_warning ("Couldn't read phase2 private key '%s': %s", pk_filename, error ? error->message : "(unknown)");
g_clear_error (&error);
}
secret_flag_prop = NM_SETTING_802_1X_PHASE2_PRIVATE_KEY_PASSWORD_FLAGS;
} else {
if (!nm_setting_802_1x_set_private_key (s_8021x, pk_filename, password, NM_SETTING_802_1X_CK_SCHEME_PATH, &format, &error)) {
g_warning ("Couldn't read private key '%s': %s", pk_filename, error ? error->message : "(unknown)");
g_clear_error (&error);
}
secret_flag_prop = NM_SETTING_802_1X_PRIVATE_KEY_PASSWORD_FLAGS;
}
g_free (pk_filename);
/* Default to agent-owned secrets for new connections */
if (method->new_connection) {
g_object_set (s_8021x,
secret_flag_prop, NM_SETTING_SECRET_FLAG_AGENT_OWNED,
NM_SETTING_802_1X_SYSTEM_CA_CERTS, TRUE,
NULL);
}
/* TLS client certificate */
if (format != NM_SETTING_802_1X_CK_FORMAT_PKCS12) {
/* If the key is pkcs#12 nm_setting_802_1x_set_private_key() already
* set the client certificate for us.
*/
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_user_cert_button"));
g_assert (widget);
cc_filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
g_assert (cc_filename);
format = NM_SETTING_802_1X_CK_FORMAT_UNKNOWN;
if (parent->phase2) {
if (!nm_setting_802_1x_set_phase2_client_cert (s_8021x, cc_filename, NM_SETTING_802_1X_CK_SCHEME_PATH, &format, &error)) {
g_warning ("Couldn't read phase2 client certificate '%s': %s", cc_filename, error ? error->message : "(unknown)");
g_clear_error (&error);
}
} else {
if (!nm_setting_802_1x_set_client_cert (s_8021x, cc_filename, NM_SETTING_802_1X_CK_SCHEME_PATH, &format, &error)) {
g_warning ("Couldn't read client certificate '%s': %s", cc_filename, error ? error->message : "(unknown)");
g_clear_error (&error);
}
}
g_free (cc_filename);
}
/* TLS CA certificate */
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_ca_cert_button"));
g_assert (widget);
ca_filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
format = NM_SETTING_802_1X_CK_FORMAT_UNKNOWN;
if (parent->phase2) {
if (!nm_setting_802_1x_set_phase2_ca_cert (s_8021x, ca_filename, NM_SETTING_802_1X_CK_SCHEME_PATH, &format, &error)) {
g_warning ("Couldn't read phase2 CA certificate '%s': %s", ca_filename, error ? error->message : "(unknown)");
g_clear_error (&error);
}
} else {
if (!nm_setting_802_1x_set_ca_cert (s_8021x, ca_filename, NM_SETTING_802_1X_CK_SCHEME_PATH, &format, &error)) {
g_warning ("Couldn't read CA certificate '%s': %s", ca_filename, error ? error->message : "(unknown)");
g_clear_error (&error);
}
}
}
static void
private_key_picker_helper (EAPMethod *parent, const char *filename, gboolean changed)
{
NMSetting8021x *setting;
NMSetting8021xCKFormat cert_format = NM_SETTING_802_1X_CK_FORMAT_UNKNOWN;
const char *password;
GtkWidget *widget;
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_private_key_password_entry"));
g_assert (widget);
password = gtk_entry_get_text (GTK_ENTRY (widget));
setting = (NMSetting8021x *) nm_setting_802_1x_new ();
nm_setting_802_1x_set_private_key (setting, filename, password, NM_SETTING_802_1X_CK_SCHEME_PATH, &cert_format, NULL);
g_object_unref (setting);
/* With PKCS#12, the client cert must be the same as the private key */
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_user_cert_button"));
if (cert_format == NM_SETTING_802_1X_CK_FORMAT_PKCS12) {
gtk_file_chooser_unselect_all (GTK_FILE_CHOOSER (widget));
gtk_widget_set_sensitive (widget, FALSE);
} else if (changed)
gtk_widget_set_sensitive (widget, TRUE);
/* Warn the user if the private key is unencrypted */
if (!eap_method_is_encrypted_private_key (filename)) {
GtkWidget *dialog;
GtkWidget *toplevel;
GtkWindow *parent_window = NULL;
toplevel = gtk_widget_get_toplevel (parent->ui_widget);
if (gtk_widget_is_toplevel (toplevel))
parent_window = GTK_WINDOW (toplevel);
dialog = gtk_message_dialog_new (parent_window,
GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_WARNING,
GTK_BUTTONS_OK,
"%s",
_("Unencrypted private keys are insecure"));
gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
"%s",
_("The selected private key does not appear to be protected by a password. This could allow your security credentials to be compromised. Please select a password-protected private key.\n\n(You can password-protect your private key with openssl)"));
gtk_dialog_run (GTK_DIALOG (dialog));
gtk_widget_destroy (dialog);
}
}
static void
private_key_picker_file_set_cb (GtkWidget *chooser, gpointer user_data)
{
EAPMethod *parent = (EAPMethod *) user_data;
char *filename;
filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (chooser));
if (filename)
private_key_picker_helper (parent, filename, TRUE);
g_free (filename);
}
static void reset_filter (GtkWidget *widget, GParamSpec *spec, gpointer user_data)
{
if (!gtk_file_chooser_get_filter (GTK_FILE_CHOOSER (widget))) {
g_signal_handlers_block_by_func (widget, reset_filter, user_data);
gtk_file_chooser_set_filter (GTK_FILE_CHOOSER (widget), GTK_FILE_FILTER (user_data));
g_signal_handlers_unblock_by_func (widget, reset_filter, user_data);
}
}
typedef const char * (*PathFunc) (NMSetting8021x *setting);
typedef NMSetting8021xCKScheme (*SchemeFunc) (NMSetting8021x *setting);
static void
setup_filepicker (GtkBuilder *builder,
const char *name,
const char *title,
WirelessSecurity *ws_parent,
EAPMethod *parent,
NMSetting8021x *s_8021x,
SchemeFunc scheme_func,
PathFunc path_func,
gboolean privkey,
gboolean client_cert)
{
GtkWidget *widget;
GtkFileFilter *filter;
const char *filename = NULL;
widget = GTK_WIDGET (gtk_builder_get_object (builder, name));
g_assert (widget);
gtk_file_chooser_set_local_only (GTK_FILE_CHOOSER (widget), TRUE);
gtk_file_chooser_button_set_title (GTK_FILE_CHOOSER_BUTTON (widget), title);
if (s_8021x && path_func && scheme_func) {
if (scheme_func (s_8021x) == NM_SETTING_802_1X_CK_SCHEME_PATH) {
filename = path_func (s_8021x);
if (filename)
gtk_file_chooser_set_filename (GTK_FILE_CHOOSER (widget), filename);
}
}
/* Connect a special handler for private keys to intercept PKCS#12 key types
* and desensitize the user cert button.
*/
if (privkey) {
g_signal_connect (G_OBJECT (widget), "selection-changed",
(GCallback) private_key_picker_file_set_cb,
parent);
if (filename)
private_key_picker_helper (parent, filename, FALSE);
}
g_signal_connect (G_OBJECT (widget), "selection-changed",
(GCallback) wireless_security_changed_cb,
ws_parent);
filter = eap_method_default_file_chooser_filter_new (privkey);
gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (widget), filter);
/* For some reason, GTK+ calls set_current_filter (..., NULL) from
* gtkfilechooserdefault.c::show_and_select_files_finished_loading() on our
* dialog; so force-reset the filter to what we want it to be whenever
* it gets cleared.
*/
if (client_cert)
g_signal_connect (G_OBJECT (widget), "notify::filter", (GCallback) reset_filter, filter);
}
static void
update_secrets (EAPMethod *parent, NMConnection *connection)
{
NMSetting8021x *s_8021x;
HelperSecretFunc password_func;
SchemeFunc scheme_func;
PathFunc path_func;
const char *filename;
GtkWidget *widget;
if (parent->phase2) {
password_func = (HelperSecretFunc) nm_setting_802_1x_get_phase2_private_key_password;
scheme_func = nm_setting_802_1x_get_phase2_private_key_scheme;
path_func = nm_setting_802_1x_get_phase2_private_key_path;
} else {
password_func = (HelperSecretFunc) nm_setting_802_1x_get_private_key_password;
scheme_func = nm_setting_802_1x_get_private_key_scheme;
path_func = nm_setting_802_1x_get_private_key_path;
}
helper_fill_secret_entry (connection,
parent->builder,
"eap_tls_private_key_password_entry",
NM_TYPE_SETTING_802_1X,
password_func);
/* Set the private key filepicker button path if we have a private key */
s_8021x = nm_connection_get_setting_802_1x (connection);
if (s_8021x && (scheme_func (s_8021x) == NM_SETTING_802_1X_CK_SCHEME_PATH)) {
filename = path_func (s_8021x);
if (filename) {
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_private_key_button"));
g_assert (widget);
gtk_file_chooser_set_filename (GTK_FILE_CHOOSER (widget), filename);
}
}
}
EAPMethodTLS *
eap_method_tls_new (WirelessSecurity *ws_parent,
NMConnection *connection,
gboolean phase2,
gboolean secrets_only)
{
EAPMethodTLS *method;
EAPMethod *parent;
GtkWidget *widget;
NMSetting8021x *s_8021x = NULL;
parent = eap_method_init (sizeof (EAPMethodTLS),
validate,
add_to_size_group,
fill_connection,
update_secrets,
NULL,
"/org/gnome/control-center/network/eap-method-tls.ui",
"eap_tls_notebook",
"eap_tls_identity_entry",
phase2);
if (!parent)
return NULL;
method = (EAPMethodTLS *) parent;
method->new_connection = secrets_only ? FALSE : TRUE;
eap_method_nag_init (parent, "eap_tls_ca_cert_button", connection);
if (connection)
s_8021x = nm_connection_get_setting_802_1x (connection);
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_identity_entry"));
g_assert (widget);
g_signal_connect (G_OBJECT (widget), "changed",
(GCallback) wireless_security_changed_cb,
ws_parent);
if (s_8021x && nm_setting_802_1x_get_identity (s_8021x))
gtk_entry_set_text (GTK_ENTRY (widget), nm_setting_802_1x_get_identity (s_8021x));
setup_filepicker (parent->builder, "eap_tls_user_cert_button",
_("Choose your personal certificate"),
ws_parent, parent, s_8021x,
phase2 ? nm_setting_802_1x_get_phase2_client_cert_scheme : nm_setting_802_1x_get_client_cert_scheme,
phase2 ? nm_setting_802_1x_get_phase2_client_cert_path : nm_setting_802_1x_get_client_cert_path,
FALSE, TRUE);
setup_filepicker (parent->builder, "eap_tls_ca_cert_button",
_("Choose a Certificate Authority certificate"),
ws_parent, parent, s_8021x,
phase2 ? nm_setting_802_1x_get_phase2_ca_cert_scheme : nm_setting_802_1x_get_ca_cert_scheme,
phase2 ? nm_setting_802_1x_get_phase2_ca_cert_path : nm_setting_802_1x_get_ca_cert_path,
FALSE, FALSE);
setup_filepicker (parent->builder, "eap_tls_private_key_button",
_("Choose your private key"),
ws_parent, parent, s_8021x,
phase2 ? nm_setting_802_1x_get_phase2_private_key_scheme : nm_setting_802_1x_get_private_key_scheme,
phase2 ? nm_setting_802_1x_get_phase2_private_key_path : nm_setting_802_1x_get_private_key_path,
TRUE, FALSE);
/* Fill secrets, if any */
if (connection)
update_secrets (parent, connection);
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_private_key_password_entry"));
g_assert (widget);
g_signal_connect (G_OBJECT (widget), "changed",
(GCallback) wireless_security_changed_cb,
ws_parent);
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "show_checkbutton_eaptls"));
g_assert (widget);
g_signal_connect (G_OBJECT (widget), "toggled",
(GCallback) show_toggled_cb,
parent);
if (secrets_only) {
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_identity_entry"));
gtk_widget_set_sensitive (widget, FALSE);
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_user_cert_label"));
gtk_widget_hide (widget);
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_user_cert_button"));
gtk_widget_hide (widget);
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_private_key_label"));
gtk_widget_hide (widget);
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_private_key_button"));
gtk_widget_hide (widget);
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_ca_cert_label"));
gtk_widget_hide (widget);
widget = GTK_WIDGET (gtk_builder_get_object (parent->builder, "eap_tls_ca_cert_button"));
gtk_widget_hide (widget);
}
return method;
}