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/*
 *    Remote Client
 *    HardInfo - Displays System Information
 *    Copyright (C) 2003-2009 Leandro A. F. Pereira <leandro@hardinfo.org>
 *
 *    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, version 2.
 *
 *    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 St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include <stdio.h>
#include <string.h>
#include <shell.h>
#include <iconcache.h>
#include <hardinfo.h>
#include <config.h>

/*
 * TODO
 *
 * - Completely disable this feature if libsoup support isn't compiled in
 * - Add "Local Computer"
 * - Detect machines on local network that runs SSH
 *   - IP range scan
 *   - mDNS
 * - Allow the user to add/remove/edit a machine
 *   - Use ~/.ssh/hosts as a starting point?
 *   - Different icons for different machines?
 *   - Make sure SSH can do port forwarding
 *   - Make sure the remote host has HardInfo installed, with the correct
 *     version.
 * - Allow the user to choose/guess the SSH authentication method
 *   - Plain old username / password
 *   - Passwordless RSA keys
 *   - RSA Keys with passwords
 * - Make sure SSH can do port forwarding
 * - Make sure the remote host has HardInfo installed
 * - Implement XML-RPC server (use libsoup; there's a example with libsoup's sources)
 *   - Create abstractions for common module operations
 *   - Use function pointers to choose between local and remote modes
 *   - Generate a random username/password to be passed to the XML-RPC server; use
 *     that username/password on the client; this is just to make sure nobody on the
 *     machine will be allowed to obtain information that might be sensitive. This
 *     will be passed with base64, so it can be sniffed; this needs root access anyway,
 *     so not really a problem.
 * - Determine if we're gonna use GIOChannels or create a communication thread
 * - Use libsoup XML-RPC support to implement the remote mode
 * - Introduce a flag on the modules, stating their ability to be used locally/remotely
 *   (Benchmarks can't be used remotely; Displays won't work remotely [unless we use
      X forwarding, but that'll be local X11 info anyway]).
 */

typedef struct _RemoteDialog RemoteDialog;
struct _RemoteDialog {
  GtkWidget *dialog;
  GtkWidget *btn_connect, *btn_cancel;
};

static RemoteDialog *remote_dialog_new(GtkWidget *parent);

void remote_dialog_show(GtkWidget *parent)
{
    gboolean success;
    RemoteDialog *rd = remote_dialog_new(parent);

    if (gtk_dialog_run(GTK_DIALOG(rd->dialog)) == GTK_RESPONSE_ACCEPT) {
	shell_status_update("Generating remote...");
	gtk_widget_hide(rd->dialog);
	shell_view_set_enabled(FALSE);
	shell_status_set_enabled(TRUE);

//	success = remote_generate(rd);

	shell_status_set_enabled(FALSE);

	if (success)
	    shell_status_update("Remote saved.");
	else
	    shell_status_update("Error while creating the remote.");
    }

    gtk_widget_destroy(rd->dialog);
    g_free(rd);
}

static RemoteDialog *remote_dialog_new(GtkWidget *parent)
{
    RemoteDialog *rd;
    GtkWidget *dialog;
    GtkWidget *dialog1_vbox;
    GtkWidget *scrolledwindow2;
    GtkWidget *treeview2;
    GtkWidget *vbuttonbox3;
    GtkWidget *button3;
    GtkWidget *button6;
    GtkWidget *dialog1_action_area;
    GtkWidget *button8;
    GtkWidget *button7;
    GtkWidget *label;
    GtkWidget *hbox;

    GtkTreeViewColumn *column;
    GtkCellRenderer *cr_text, *cr_pbuf, *cr_toggle;

    rd = g_new0(RemoteDialog, 1);

    dialog = gtk_dialog_new();
    gtk_window_set_title(GTK_WINDOW(dialog), "Connect to Remote Computer");
    gtk_container_set_border_width(GTK_CONTAINER(dialog), 5);
    gtk_window_set_default_size(GTK_WINDOW(dialog), 420, 260);
    gtk_window_set_transient_for(GTK_WINDOW(dialog), GTK_WINDOW(parent));
    gtk_window_set_position(GTK_WINDOW(dialog),
			    GTK_WIN_POS_CENTER_ON_PARENT);
    gtk_window_set_type_hint(GTK_WINDOW(dialog),
			     GDK_WINDOW_TYPE_HINT_DIALOG);

    dialog1_vbox = GTK_DIALOG(dialog)->vbox;
    gtk_box_set_spacing(GTK_BOX(dialog1_vbox), 5);
    gtk_container_set_border_width(GTK_CONTAINER(dialog1_vbox), 4);
    gtk_widget_show(dialog1_vbox);

    hbox = gtk_hbox_new(FALSE, 5);
    gtk_box_pack_start(GTK_BOX(dialog1_vbox), hbox, FALSE, FALSE, 0);

    label = gtk_label_new("<big><b>Connect To</b></big>\n"
			  "Please choose the remote computer to connect to:");
    gtk_label_set_line_wrap(GTK_LABEL(label), TRUE);
    gtk_label_set_use_markup(GTK_LABEL(label), TRUE);
    gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);


    gtk_box_pack_start(GTK_BOX(hbox),
		       icon_cache_get_image("network.png"),
		       FALSE, FALSE, 0);
    gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, TRUE, 0);
    gtk_widget_show_all(hbox);
    
    hbox = gtk_hbox_new(FALSE, 5);
    gtk_box_pack_start(GTK_BOX(dialog1_vbox), hbox, TRUE, TRUE, 0);
    gtk_widget_show(hbox);

    scrolledwindow2 = gtk_scrolled_window_new(NULL, NULL);
    gtk_widget_show(scrolledwindow2);
    gtk_box_pack_start(GTK_BOX(hbox), scrolledwindow2, TRUE, TRUE,
		       0);
    gtk_widget_set_size_request(scrolledwindow2, -1, 200);
    gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwindow2),
				   GTK_POLICY_AUTOMATIC,
				   GTK_POLICY_AUTOMATIC);
    gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW
					(scrolledwindow2), GTK_SHADOW_IN);

    treeview2 = gtk_tree_view_new();
    gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(treeview2), FALSE);
    gtk_widget_show(treeview2);
    gtk_container_add(GTK_CONTAINER(scrolledwindow2), treeview2);

    column = gtk_tree_view_column_new();
    gtk_tree_view_append_column(GTK_TREE_VIEW(treeview2), column);

    cr_toggle = gtk_cell_renderer_toggle_new();
    gtk_tree_view_column_pack_start(column, cr_toggle, FALSE);
//    g_signal_connect(cr_toggle, "toggled",
//		     G_CALLBACK(remote_dialog_sel_toggle), rd);
    gtk_tree_view_column_add_attribute(column, cr_toggle, "active",
				       TREE_COL_SEL);

    cr_pbuf = gtk_cell_renderer_pixbuf_new();
    gtk_tree_view_column_pack_start(column, cr_pbuf, FALSE);
    gtk_tree_view_column_add_attribute(column, cr_pbuf, "pixbuf",
				       TREE_COL_PBUF);

    cr_text = gtk_cell_renderer_text_new();
    gtk_tree_view_column_pack_start(column, cr_text, TRUE);
    gtk_tree_view_column_add_attribute(column, cr_text, "markup",
				       TREE_COL_NAME);

    vbuttonbox3 = gtk_vbutton_box_new();
    gtk_widget_show(vbuttonbox3);
    gtk_box_pack_start(GTK_BOX(hbox), vbuttonbox3, FALSE, TRUE, 0);
    gtk_box_set_spacing(GTK_BOX(vbuttonbox3), 5);
    gtk_button_box_set_layout(GTK_BUTTON_BOX(vbuttonbox3),
			      GTK_BUTTONBOX_START);

    button3 = gtk_button_new_with_mnemonic("_Add");
    gtk_widget_show(button3);
    gtk_container_add(GTK_CONTAINER(vbuttonbox3), button3);
    GTK_WIDGET_SET_FLAGS(button3, GTK_CAN_DEFAULT);
//    g_signal_connect(button3, "clicked",
//		     G_CALLBACK(remote_dialog_sel_none), rd);

    button6 = gtk_button_new_with_mnemonic("_Edit");
    gtk_widget_show(button6);
    gtk_container_add(GTK_CONTAINER(vbuttonbox3), button6);
    GTK_WIDGET_SET_FLAGS(button6, GTK_CAN_DEFAULT);
//    g_signal_connect(button6, "clicked", G_CALLBACK(remote_dialog_sel_all),
//		     rd);

    button6 = gtk_button_new_with_mnemonic("_Remove");
    gtk_widget_show(button6);
    gtk_container_add(GTK_CONTAINER(vbuttonbox3), button6);
    GTK_WIDGET_SET_FLAGS(button6, GTK_CAN_DEFAULT);
//    g_signal_connect(button6, "clicked", G_CALLBACK(remote_dialog_sel_all),
//		     rd);

    dialog1_action_area = GTK_DIALOG(dialog)->action_area;
    gtk_widget_show(dialog1_action_area);
    gtk_button_box_set_layout(GTK_BUTTON_BOX(dialog1_action_area),
			      GTK_BUTTONBOX_END);

    button8 = gtk_button_new_from_stock(GTK_STOCK_CANCEL);
    gtk_widget_show(button8);
    gtk_dialog_add_action_widget(GTK_DIALOG(dialog), button8,
				 GTK_RESPONSE_CANCEL);
    GTK_WIDGET_SET_FLAGS(button8, GTK_CAN_DEFAULT);

    button7 = gtk_button_new_from_stock(GTK_STOCK_CONNECT);
    gtk_widget_show(button7);
    gtk_dialog_add_action_widget(GTK_DIALOG(dialog), button7,
				 GTK_RESPONSE_ACCEPT);
    GTK_WIDGET_SET_FLAGS(button7, GTK_CAN_DEFAULT);

    rd->dialog = dialog;
    rd->btn_cancel = button8;
    rd->btn_connect = button7;

    gtk_tree_view_collapse_all(GTK_TREE_VIEW(treeview2));

    return rd;
}