path: root/smime/gui/certificate-viewer.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Authors: Chris Toshok <toshok@ximian.com>
 *
 *  Copyright (C) 2003 Ximian, Inc. (www.ximian.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., 59 Temple Street #330, Boston, MA 02111-1307, USA.
 *
 */


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

#include "certificate-viewer.h"

#include "e-asn1-object.h"

#include <gtk/gtk.h>

#include <libgnome/gnome-i18n.h>
#include <glade/glade.h>

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

#define GLADE_FILE_NAME "smime-ui.glade"

typedef struct {
    GladeXML *gui;
    GtkWidget *dialog;
    GtkTreeStore *hierarchy_store, *fields_store;
    GtkWidget *hierarchy_tree, *fields_tree;
    GtkWidget *field_text;
    GtkTextTag *text_tag;

    GList *cert_chain;
} CertificateViewerData;

static void
free_data (gpointer data, GObject *where_the_object_was)
{
    CertificateViewerData *cvm = data;

    g_list_foreach (cvm->cert_chain, (GFunc)g_object_unref, NULL);
    g_list_free (cvm->cert_chain);

    g_object_unref (cvm->gui);
    g_free (cvm);
}

#define NOT_PART_OF_CERT_MARKUP "<i>&lt;Not part of certificate&gt;</i>"

static void
fill_in_general (CertificateViewerData *cvm_data, ECert *cert)
{
    GtkWidget *label;
    const char *text;
    char *markup;

    /* issued to */
    label = glade_xml_get_widget (cvm_data->gui, "issued-to-cn");
    if (e_cert_get_cn (cert)) {
        gtk_label_set_text (GTK_LABEL (label), e_cert_get_cn (cert));
    }
    else {
        gtk_label_set_markup (GTK_LABEL (label), NOT_PART_OF_CERT_MARKUP);
    }

    label = glade_xml_get_widget (cvm_data->gui, "issued-to-o");
    if (e_cert_get_org (cert)) {
        gtk_label_set_text (GTK_LABEL (label), e_cert_get_org (cert));
    }
    else {
        gtk_label_set_markup (GTK_LABEL (label), NOT_PART_OF_CERT_MARKUP);
    }

    label = glade_xml_get_widget (cvm_data->gui, "issued-to-ou");
    if (e_cert_get_org_unit (cert)) {
        gtk_label_set_text (GTK_LABEL (label), e_cert_get_org_unit (cert));
    }
    else {
        gtk_label_set_markup (GTK_LABEL (label), NOT_PART_OF_CERT_MARKUP);
    }

    text = e_cert_get_serial_number (cert);
    label = glade_xml_get_widget (cvm_data->gui, "issued-to-serial");
    gtk_label_set_text (GTK_LABEL (label), text);

    /* issued by */
    label = glade_xml_get_widget (cvm_data->gui, "issued-by-cn");
    if (e_cert_get_issuer_cn (cert)) {
        gtk_label_set_text (GTK_LABEL (label), e_cert_get_issuer_cn (cert));
    }
    else {
        gtk_label_set_markup (GTK_LABEL (label), NOT_PART_OF_CERT_MARKUP);
    }

    label = glade_xml_get_widget (cvm_data->gui, "issued-by-o");
    if (e_cert_get_issuer_org (cert)) {
            gtk_label_set_text (GTK_LABEL (label), e_cert_get_issuer_org (cert));
    }
    else {
        gtk_label_set_markup (GTK_LABEL (label), NOT_PART_OF_CERT_MARKUP);
    }
    
    label = glade_xml_get_widget (cvm_data->gui, "issued-by-ou");
    if (e_cert_get_issuer_org_unit (cert)) {
        gtk_label_set_text (GTK_LABEL (label), e_cert_get_issuer_org_unit (cert));
    }
    else {
        gtk_label_set_markup (GTK_LABEL (label), NOT_PART_OF_CERT_MARKUP);
    }

    /* validity */
    label = glade_xml_get_widget (cvm_data->gui, "validity-issued-on");
    if (e_cert_get_issued_on (cert)) {
        gtk_label_set_text (GTK_LABEL (label), e_cert_get_issued_on (cert));
    }
    else {
        gtk_label_set_markup (GTK_LABEL (label), NOT_PART_OF_CERT_MARKUP);
    }

    label = glade_xml_get_widget (cvm_data->gui, "validity-expires-on");
    if (e_cert_get_expires_on (cert)) {
        gtk_label_set_text (GTK_LABEL (label), e_cert_get_expires_on (cert));
    }
    else {
        gtk_label_set_markup (GTK_LABEL (label), NOT_PART_OF_CERT_MARKUP);
    }

    /* fingerprints */
    markup = g_strdup_printf ("<tt>%s</tt>", e_cert_get_sha1_fingerprint (cert));
    label = glade_xml_get_widget (cvm_data->gui, "fingerprints-sha1");
    gtk_label_set_markup (GTK_LABEL (label), markup);
    g_free (markup);

    markup = g_strdup_printf ("<tt>%s</tt>", e_cert_get_md5_fingerprint (cert));
    label = glade_xml_get_widget (cvm_data->gui, "fingerprints-md5");
    gtk_label_set_markup (GTK_LABEL (label), markup);
    g_free (markup);
}

static void
populate_fields_tree (CertificateViewerData *cvm_data, EASN1Object *asn1, GtkTreeIter *root)
{
    GtkTreeIter new_iter;

    /* first insert a node for the current asn1 */
    gtk_tree_store_insert (cvm_data->fields_store, &new_iter, root, -1);
    gtk_tree_store_set (cvm_data->fields_store, &new_iter,
                0, e_asn1_object_get_display_name (asn1),
                1, asn1,
                -1);

    if (e_asn1_object_is_valid_container (asn1)) {
        GList *children = e_asn1_object_get_children (asn1);
        if (children) {
            GList *l;
            for (l = children; l; l = l->next) {
                EASN1Object *subasn1 = l->data;
                populate_fields_tree (cvm_data, subasn1, &new_iter);
            }
        }
        g_list_foreach (children, (GFunc)g_object_unref, NULL);
        g_list_free (children);
    }
}

static void
hierarchy_selection_changed (GtkTreeSelection *selection, CertificateViewerData *cvm_data)
{
    GtkTreeIter iter;
    GtkTreeModel *model;

    if (gtk_tree_selection_get_selected (selection,
                         &model,
                         &iter)) {
        EASN1Object *asn1_object;
        ECert *cert;

        gtk_tree_model_get (model,
                    &iter,
                    1, &cert,
                    -1);

        if (!cert)
            return;

        /* display the cert's ASN1 structure */
        asn1_object = e_cert_get_asn1_struct (cert);

        /* wipe out the old model */
        cvm_data->fields_store = gtk_tree_store_new (2, G_TYPE_STRING, G_TYPE_POINTER);
        gtk_tree_view_set_model (GTK_TREE_VIEW (cvm_data->fields_tree),
                     GTK_TREE_MODEL (cvm_data->fields_store));

        /* populate the fields from the newly selected cert */
        populate_fields_tree (cvm_data, asn1_object, NULL);
        gtk_tree_view_expand_all (GTK_TREE_VIEW (cvm_data->fields_tree));
        g_object_unref (asn1_object);

        /* and blow away the field value */
        gtk_text_buffer_set_text (gtk_text_view_get_buffer (GTK_TEXT_VIEW (cvm_data->field_text)),
                      "", 0);
    }   
}

static void
fields_selection_changed (GtkTreeSelection *selection, CertificateViewerData *cvm_data)
{
    GtkTreeIter iter;
    GtkTreeModel *model;

    if (gtk_tree_selection_get_selected (selection,
                         &model,
                         &iter)) {
        EASN1Object *asn1_object;
        const char *value;

        gtk_tree_model_get (model,
                    &iter,
                    1, &asn1_object,
                    -1);

        value = e_asn1_object_get_display_value (asn1_object);

        gtk_text_buffer_set_text (gtk_text_view_get_buffer (GTK_TEXT_VIEW (cvm_data->field_text)),
                      "", 0);

        if (value) {
            GtkTextIter text_iter;
            
            gtk_text_buffer_get_start_iter (gtk_text_view_get_buffer (GTK_TEXT_VIEW (cvm_data->field_text)),
                            &text_iter);

            gtk_text_buffer_insert_with_tags (gtk_text_view_get_buffer (GTK_TEXT_VIEW (cvm_data->field_text)),
                              &text_iter,
                              value, strlen (value),
                              cvm_data->text_tag, NULL);
        }
    }
}

static void
fill_in_details (CertificateViewerData *cvm_data, ECert *cert)
{
    GList *l;
    GtkTreeIter *root = NULL;
    GtkTreeSelection *selection;

    /* hook up all the hierarchy tree foo */
    cvm_data->hierarchy_store = gtk_tree_store_new (2, G_TYPE_STRING, G_TYPE_OBJECT);
    cvm_data->hierarchy_tree = glade_xml_get_widget (cvm_data->gui, "cert-hierarchy-treeview");
    gtk_tree_view_set_model (GTK_TREE_VIEW (cvm_data->hierarchy_tree),
                 GTK_TREE_MODEL (cvm_data->hierarchy_store));

    gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (cvm_data->hierarchy_tree),
                             -1, "Cert", gtk_cell_renderer_text_new(),
                             "text", 0, NULL);

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (cvm_data->hierarchy_tree));
    g_signal_connect (selection, "changed", G_CALLBACK (hierarchy_selection_changed), cvm_data);

    /* hook up all the fields tree foo */
    cvm_data->fields_tree = glade_xml_get_widget (cvm_data->gui, "cert-fields-treeview");

    gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (cvm_data->fields_tree),
                             -1, "Field", gtk_cell_renderer_text_new(),
                             "text", 0, NULL);

    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (cvm_data->fields_tree));
    g_signal_connect (selection, "changed", G_CALLBACK (fields_selection_changed), cvm_data);

    /* hook up all the field display foo */
    cvm_data->field_text = glade_xml_get_widget (cvm_data->gui, "cert-field-value-textview");

    /* set the font of the field value viewer to be some fixed
       width font to the hex display doesn't look like ass. */
    cvm_data->text_tag = gtk_text_buffer_create_tag (gtk_text_view_get_buffer (GTK_TEXT_VIEW (cvm_data->field_text)),
                             "mono",
                             "font", "Mono",
                             NULL);

    /* initially populate the hierarchy from the cert's chain */
    cvm_data->cert_chain = e_cert_get_chain (cert);
    cvm_data->cert_chain = g_list_reverse (cvm_data->cert_chain);
    for (l = cvm_data->cert_chain; l; l = l->next) {
        ECert *c = l->data;
        const char *str;
        GtkTreeIter new_iter;

        str = e_cert_get_cn (c);
        if (!str)
            str = e_cert_get_subject_name (c);

        gtk_tree_store_insert (cvm_data->hierarchy_store, &new_iter, root, -1);
        gtk_tree_store_set (cvm_data->hierarchy_store, &new_iter,
                    0, str,
                    1, c,
                    -1);

        root = &new_iter;
    }

    gtk_tree_view_expand_all (GTK_TREE_VIEW (cvm_data->hierarchy_tree));
}

GtkWidget*
certificate_viewer_show (ECert *cert)
{
    CertificateViewerData *cvm_data;
    char *title;
    char *gladefile;

    cvm_data = g_new0 (CertificateViewerData, 1);

    gladefile = g_build_filename (EVOLUTION_GLADEDIR,
                      GLADE_FILE_NAME,
                      NULL);
    cvm_data->gui = glade_xml_new (gladefile, NULL, NULL);
    g_free (gladefile);

    cvm_data->dialog = glade_xml_get_widget (cvm_data->gui, "certificate-viewer-dialog");

    gtk_widget_realize (cvm_data->dialog);
    gtk_container_set_border_width (GTK_CONTAINER (GTK_DIALOG (cvm_data->dialog)->action_area), 12);

    title = g_strdup_printf (_("Certificate Viewer: %s"), e_cert_get_window_title (cert));

    gtk_window_set_title (GTK_WINDOW (cvm_data->dialog),
                  title);
    
    g_free (title);

    fill_in_general (cvm_data, cert);
    fill_in_details (cvm_data, cert);

    g_object_weak_ref (G_OBJECT (cvm_data->dialog), free_data, cvm_data);

    /*  gtk_widget_show (cvm_data->dialog);*/
    return cvm_data->dialog;
}