Sylpheed

/* sigstatus.h - GTK+ based signature status display

 *      Copyright (C) 2001 Werner Koch (dd9jn)

 *

 * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

 */

#ifdef HAVE_CONFIG_H

#  include "config.h"

#endif

#if USE_GPGME

#include <glib.h>

#include <glib/gi18n.h>

#include <gtk/gtkdialog.h>

#include <gtk/gtkvbox.h>

#include <gtk/gtkhbox.h>

#include <gtk/gtklabel.h>

#include <gtk/gtkbutton.h>

#include <gtk/gtkstock.h>

#include <gdk/gdkkeysyms.h>

#include <gpgme.h>

#include "gtkutils.h"

#include "utils.h"

#include "sigstatus.h"

/* remove the window after 30 seconds to avoid cluttering the deskop 

 * with too many of them */

#define MY_TIMEOUT (30*1000)

struct gpgmegtk_sig_status_s {

        GtkWidget *mainwindow;

        GtkWidget *label;

        gint running;

        gint destroy_pending;

        guint timeout_id;

        gint timeout_id_valid;

};

static void do_destroy(GpgmegtkSigStatus hd)

{

        if (!hd->running) {

                if (hd->timeout_id_valid) {

                        gtk_timeout_remove(hd->timeout_id);

                        hd->timeout_id_valid = 0;

                }

                if (hd->mainwindow) {

                        gtk_widget_destroy ( hd->mainwindow );

                        hd->mainwindow = NULL;

                }

                if (hd->destroy_pending) 

                        g_free(hd);

        }

}

static void okay_cb(GtkWidget *widget, gpointer data)

{

        GpgmegtkSigStatus hd = data;

        hd->running = 0;

        do_destroy(hd);

}

static gboolean delete_event(GtkWidget *widget, GdkEventAny *event, gpointer data)

{

        GpgmegtkSigStatus hd = data;

        hd->running = 0;

        do_destroy(hd);

        return TRUE;

}

static gboolean key_pressed(GtkWidget *widget, GdkEventKey *event, gpointer data)

{

        GpgmegtkSigStatus hd = data;

        if (event && event->keyval == GDK_Escape) {

                hd->running = 0;

                do_destroy(hd);

                return TRUE;

        }

        return FALSE;

}

GpgmegtkSigStatus gpgmegtk_sig_status_create(void)

{

        GtkWidget *window;

        GtkWidget *vbox;

        GtkWidget *hbox;

        GtkWidget *label;

        GtkWidget *okay_btn;

        GtkWidget *okay_area;

        GpgmegtkSigStatus hd;

        hd = g_malloc0(sizeof *hd);

        hd->running = 1;

        window = gtk_dialog_new();

        hd->mainwindow = window;

        gtk_widget_set_size_request(window, 400, -1);

        gtk_window_set_title(GTK_WINDOW(window), _("Signature check result"));

        gtk_window_set_policy(GTK_WINDOW(window), FALSE, FALSE, FALSE);

        gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);

        gtk_dialog_set_has_separator(GTK_DIALOG(window), FALSE);

        g_signal_connect(G_OBJECT(window), "delete_event",

                         G_CALLBACK(delete_event), hd);

        g_signal_connect(G_OBJECT(window), "key_press_event",

                         G_CALLBACK(key_pressed), hd);

        vbox = gtk_vbox_new(FALSE, 8);

        gtk_container_set_border_width(GTK_CONTAINER(vbox), 12);

        gtk_box_pack_start(GTK_BOX(GTK_DIALOG(window)->vbox),

                           vbox, TRUE, TRUE, 0);

        gtk_widget_show(vbox);

        hbox = gtk_hbox_new(FALSE, 0);

        gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);

        gtk_widget_show(hbox);

        label = gtk_label_new(_("Checking signature"));

        hd->label = label;

        gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 8);

        gtk_label_set_line_wrap(GTK_LABEL(label), TRUE);

        gtk_label_set_selectable(GTK_LABEL(label), TRUE);

        gtk_widget_show(label);

        gtkut_stock_button_set_create(&okay_area, &okay_btn, GTK_STOCK_OK,

                                      NULL, NULL, NULL, NULL);

        gtk_box_pack_end(GTK_BOX(GTK_DIALOG(window)->action_area),

                         okay_area, FALSE, FALSE, 0);

        gtk_container_set_border_width(GTK_CONTAINER(okay_area), 5);

        gtk_widget_grab_default(okay_btn);

        gtk_widget_grab_focus(okay_btn);

        g_signal_connect(G_OBJECT(okay_btn), "clicked",

                         G_CALLBACK(okay_cb), hd);

        gtk_widget_show_all(window);

        while (gtk_events_pending())

                gtk_main_iteration();

        return hd;

}

static gint timeout_cb(gpointer data)

{

        GpgmegtkSigStatus hd = data;

        hd->running = 0;

        hd->timeout_id_valid = 0;

        do_destroy(hd);

        return FALSE;

}

void gpgmegtk_sig_status_destroy(GpgmegtkSigStatus hd)

{

        if (hd) {

                hd->destroy_pending = 1;

                if (hd->running && !hd->timeout_id_valid) {

                        hd->timeout_id = gtk_timeout_add(MY_TIMEOUT,

                                                         timeout_cb, hd);

                        hd->timeout_id_valid = 1;

                }

                do_destroy(hd);

        }

}

void gpgmegtk_sig_status_update(GpgmegtkSigStatus hd, gpgme_ctx_t ctx)

{

        gpgme_verify_result_t result;

        gpgme_signature_t sig;

        gchar *text = NULL;

        if (!hd || !hd->running || !ctx)

                return;

        result = gpgme_op_verify_result(ctx);

        sig = result->signatures;

        while (sig) {

                gchar *tmp;

                const gchar *userid;

                gpgme_key_t key = NULL;

                if (!gpgme_get_key(ctx, sig->fpr, &key, 0)) {

                        userid = key->uids->uid;

                } else {

                        userid = "[?]";

                }

                tmp = g_strdup_printf

                        (_("%s%s%s from \"%s\""),

                         text ? text : "", text ? "\n" : "",

                         gpgmegtk_sig_status_to_string(sig, FALSE), userid);

                g_free (text);

                text = tmp;

                gpgme_key_unref (key);

                sig = sig->next;

        }

        gtk_label_set_text(GTK_LABEL(hd->label), text); 

        g_free(text);

        while (gtk_events_pending())

                gtk_main_iteration();

}

const gchar *gpgmegtk_sig_status_to_string(gpgme_signature_t signature,

                                           gboolean use_name)

{

        const gchar *result = "?";

        g_return_val_if_fail(signature != NULL, result);

        switch (gpg_err_code(signature->status)) {

        case GPG_ERR_NO_DATA:

                result = _("No signature found");

                break;

        case GPG_ERR_NO_ERROR:

                switch (signature->validity) {

                case GPGME_VALIDITY_ULTIMATE:

                case GPGME_VALIDITY_FULL:

                case GPGME_VALIDITY_MARGINAL:

                        result = use_name ? _("Good signature from \"%s\"") :

                                _("Good signature");

                        break;

                default:

                        result = use_name ?

                                _("Valid signature but the key for \"%s\" is not trusted") :

                                _("Valid signature (untrusted key)");

                        break;

                }

                break;

        case GPG_ERR_SIG_EXPIRED:

                result = use_name ? _("Signature valid but expired for \"%s\"") :

                        _("Signature valid but expired");

                break;

        case GPG_ERR_KEY_EXPIRED:

                result = use_name ? _("Signature valid but the signing key for \"%s\" has expired") :

                        _("Signature valid but the signing key has expired");

                break;

        case GPG_ERR_CERT_REVOKED:

                result = use_name ? _("Signature valid but the signing key for \"%s\" has been revoked") :

                        _("Signature valid but the signing key has been revoked");

                break;

        case GPG_ERR_BAD_SIGNATURE:

                result = use_name ? _("BAD signature from \"%s\"") :

                        _("BAD signature");

                break;

        case GPG_ERR_NO_PUBKEY:

                result = _("No public key to verify the signature");

                break;

        default:

                result = _("Error verifying the signature");

                break;

        }

        return result;

}

#endif /* USE_GPGME */