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path: root/smime/gui/e-cert-selector.c
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/*
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      Michael Zucchi <notzed@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <glib/gi18n.h>

#include "nss.h"
#include "pk11func.h"
#include "certdb.h"
#include "cert.h"

#include "e-cert-selector.h"

#include "e-util/e-util.h"
#include "e-util/e-util-private.h"

#define E_CERT_SELECTOR_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_CERT_SELECTOR, ECertSelectorPrivate))

struct _ECertSelectorPrivate {
    CERTCertList *certlist;

    GtkWidget *combobox, *description;
};

enum {
    ECS_SELECTED,
    ECS_LAST_SIGNAL
};

static guint ecs_signals[ECS_LAST_SIGNAL];

G_DEFINE_TYPE (ECertSelector, e_cert_selector, GTK_TYPE_DIALOG)

/* (this is what mozilla shows)
 * Issued to:
 *  Subject: E=notzed@ximian.com, CN=notzed@ximian.com, O=My Company Ltd, L=Adelaide, ST=SA, C=AU
 *  Serial Number: 03
 *  Valid from 23/10/03 06:35:29 to 22/10/04 06:35:29
 *  Purposes: Sign,Encrypt
 * Issued by:
 *  Subject: E=notzed@ximian.com, O=company, L=there, ST=Here, C=AU
 */

static CERTCertListNode *
ecs_find_current (ECertSelector *ecs)
{
    struct _ECertSelectorPrivate *p = ecs->priv;
    CERTCertListNode *node;
    gint n;

    if (p->certlist == NULL || CERT_LIST_EMPTY (p->certlist))
        return NULL;

    n = gtk_combo_box_get_active (GTK_COMBO_BOX (p->combobox));
    node = CERT_LIST_HEAD (p->certlist);
    while (n > 0 && !CERT_LIST_END (node, p->certlist)) {
        n--;
        node = CERT_LIST_NEXT (node);
    }

    g_return_val_if_fail (!CERT_LIST_END (node, p->certlist), NULL);

    return node;
}

static void
e_cert_selector_response (GtkDialog *dialog,
                          gint button)
{
    CERTCertListNode *node;

    switch (button) {
    case GTK_RESPONSE_OK:
        node = ecs_find_current ((ECertSelector *) dialog);
        break;
    default:
        node = NULL;
        break;
    }

    g_signal_emit (dialog, ecs_signals[ECS_SELECTED], 0, node ? node->cert->nickname : NULL);
}

static void
ecs_cert_changed (GtkWidget *w,
                  ECertSelector *ecs)
{
    struct _ECertSelectorPrivate *p = ecs->priv;
    CERTCertListNode *node;
    GtkTextBuffer *buffer;
    GString *text;

    text = g_string_new ("");
    node = ecs_find_current (ecs);
    if (node) {
        /* FIXME: add serial no, validity date, uses */
        g_string_append_printf (text, _("Issued to:\n  Subject: %s\n"), node->cert->subjectName);
        g_string_append_printf (text, _("Issued by:\n  Subject: %s\n"), node->cert->issuerName);
    }

    buffer = gtk_text_view_get_buffer ((GtkTextView *) p->description);
    gtk_text_buffer_set_text (buffer, text->str, text->len);
    g_string_free (text, TRUE);
}

/**
 * e_cert_selector_new:
 * @type:
 * @currentid:
 *
 * Create a new ECertSelector dialog.  @type specifies which type of cert to
 * be selected, E_CERT_SELECTOR_SIGNER for signing certs, and
 * E_CERT_SELECTOR_RECIPIENT for encrypting certs.
 *
 * @currentid is the nickname of the cert currently selected for this user.
 *
 * You only need to connect to a single signal "selected" which will
 * be called with either a NULL nickname if cancelled, or the newly
 * selected nickname otherwise.
 *
 * Return value: A dialogue to be shown.
 **/
GtkWidget *
e_cert_selector_new (gint type,
                     const gchar *currentid)
{
    ECertSelector *ecs;
    struct _ECertSelectorPrivate *p;
    SECCertUsage usage;
    CERTCertList *certlist;
    CERTCertListNode *node;
    GtkBuilder *builder;
    GtkWidget *content_area;
    GtkWidget *w;
    GtkListStore *store;
    GtkTreeIter iter;
    gint n = 0, active = 0;

    ecs = g_object_new (e_cert_selector_get_type (), NULL);
    p = ecs->priv;

    builder = gtk_builder_new ();
    e_load_ui_builder_definition (builder, "smime-ui.ui");

    p->combobox = e_builder_get_widget (builder, "cert_combobox");
    p->description = e_builder_get_widget (builder, "cert_description");

    w = e_builder_get_widget (builder, "cert_selector_vbox");
    content_area = gtk_dialog_get_content_area (GTK_DIALOG (ecs));
    gtk_box_pack_start (GTK_BOX (content_area), w, TRUE, TRUE, 3);
    gtk_window_set_title (GTK_WINDOW (ecs), _("Select certificate"));

    switch (type) {
    case E_CERT_SELECTOR_SIGNER:
    default:
        usage = certUsageEmailSigner;
        break;
    case E_CERT_SELECTOR_RECIPIENT:
        usage = certUsageEmailRecipient;
        break;
    }

    store = GTK_LIST_STORE (gtk_combo_box_get_model (GTK_COMBO_BOX (p->combobox)));
    gtk_list_store_clear (store);

    certlist = CERT_FindUserCertsByUsage (CERT_GetDefaultCertDB (), usage, FALSE, TRUE, NULL);
    ecs->priv->certlist = certlist;
    if (certlist != NULL) {
        node = CERT_LIST_HEAD (certlist);
        while (!CERT_LIST_END (node, certlist)) {
            if (node->cert->nickname || node->cert->emailAddr) {
                gtk_list_store_append (store, &iter);
                gtk_list_store_set (
                    store, &iter,
                    0, node->cert->nickname ? node->cert->nickname : node->cert->emailAddr,
                    -1);

                if (currentid != NULL
                    && ((node->cert->nickname != NULL && strcmp (node->cert->nickname, currentid) == 0)
                    || (node->cert->emailAddr != NULL && strcmp (node->cert->emailAddr, currentid) == 0)))
                    active = n;

                n++;
            }

            node = CERT_LIST_NEXT (node);
        }
    }

    gtk_combo_box_set_active (GTK_COMBO_BOX (p->combobox), active);

    g_signal_connect (
        p->combobox, "changed",
        G_CALLBACK (ecs_cert_changed), ecs);

    g_object_unref (builder);

    ecs_cert_changed (p->combobox, ecs);

    return GTK_WIDGET (ecs);
}

static void
e_cert_selector_init (ECertSelector *ecs)
{
    gtk_dialog_add_buttons (
        GTK_DIALOG (ecs),
        GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
        GTK_STOCK_OK, GTK_RESPONSE_OK, NULL);

    ecs->priv = E_CERT_SELECTOR_GET_PRIVATE (ecs);
}

static void
e_cert_selector_finalize (GObject *object)
{
    ECertSelectorPrivate *priv;

    priv = E_CERT_SELECTOR_GET_PRIVATE (object);

    if (priv->certlist)
        CERT_DestroyCertList (priv->certlist);

    /* Chain up to parent's finalize() method. */
    G_OBJECT_CLASS (e_cert_selector_parent_class)->finalize (object);
}

static void
e_cert_selector_class_init (ECertSelectorClass *class)
{
    GObjectClass *object_class;
    GtkDialogClass *dialog_class;

    g_type_class_add_private (class, sizeof (ECertSelectorPrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->finalize = e_cert_selector_finalize;

    dialog_class = GTK_DIALOG_CLASS (class);
    dialog_class->response = e_cert_selector_response;

    ecs_signals[ECS_SELECTED] = g_signal_new (
        "selected",
        G_OBJECT_CLASS_TYPE (class),
        G_SIGNAL_RUN_LAST,
        G_STRUCT_OFFSET (ECertSelectorClass, selected),
        NULL, NULL,
        g_cclosure_marshal_VOID__POINTER,
        G_TYPE_NONE, 1,
        G_TYPE_POINTER);
}