irex-account.c

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/*
 * File Name: irex-account.c
 */

/*
 * This file is part of settings.
 *
 * settings 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.
 *
 * settings 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, see <http://www.gnu.org/licenses/>.
 */

/**
 * Copyright (C) 2008 iRex Technologies B.V.
 * All rights reserved.
 */

//----------------------------------------------------------------------------
// Include Files
//----------------------------------------------------------------------------

#include <unistd.h>
#include <stdio.h>

#include <gtk/gtk.h>
#include <gdk/gdk.h>
#include <glib.h>

#include <libergtk/ergtk.h>
#include <liberkeyb/ergtk-keyb.h>

#include "i18n.h"
#include "log.h"
#include "ipc.h"
#include "settings.h"
#include "settings_utils.h"
#include "settings_style.h"
#include "irex-account.h"


//----------------------------------------------------------------------------
// Type Declarations
//----------------------------------------------------------------------------


//----------------------------------------------------------------------------
// Global Constants
//----------------------------------------------------------------------------

const int ENTRY_LABEL_WIDTH                     = 180;
const int ENTRY_EMAIL_WIDTH                     = 350;
const int ENTRY_PASSWD_WIDTH                    = 250;
const int ENTRY_PASSWD_LENGTH_LIMITATION        = 64 ;

static const int        TITLE_HEIGHT                =  44;  // total height of titlebar
static const int        TITLE_V_PADDING             =  10;  // vertical padding around title
static const int        TITLE_SPACING               =  20;  // space between path and number of items in title


//----------------------------------------------------------------------------
// Static Variables
//----------------------------------------------------------------------------

static GtkWidget* g_myirex_window = NULL ; 
static GtkWidget* g_entry_email    = NULL;
static GtkWidget* g_entry_passwd   = NULL;
static char   g_email[128]  = { 0 };
static char   g_passwd[128] = { 0 };


//============================================================================
// Local Function Definitions
//============================================================================

static void   init_widgets_with_settings();
static gchar* fix_base64_missing_equals(gchar* input);
static gchar* cut_base64_existing_equals(gchar* input);
static void   on_listview_row_activated(GtkTreeView       *view,
                                        GtkTreePath       *path,
                                        GtkTreeViewColumn *column,
                                        gpointer          user_data);
static void   on_listview_navigate_cursor(erGtkListView         *er_listview,
                                          erGtkListViewKeyPress keycode,
                                          gpointer              user_data);
static gboolean on_focus_in( GtkWidget* widget, gpointer data );
static gboolean on_focus_out( GtkWidget* widget, gpointer data );
static gboolean on_save_button_clicked(GtkWidget* widget, gpointer data);
static void   run_dialog(GtkMessageType type, const gchar *msg);


//============================================================================
// Functions Implementation
//============================================================================

GtkWidget* create_account_window(GtkWidget* parent)
{
    // create the top level window 
    GtkWidget* top_window = parent;
    gtk_window_maximize(GTK_WINDOW(top_window));
    gtk_window_set_resizable(GTK_WINDOW(top_window), FALSE);
    gtk_container_set_border_width(GTK_CONTAINER(top_window),WINDOW_BORDER_PADDING  );
    gtk_window_set_modal(GTK_WINDOW(top_window), TRUE);

    // vboxtop in top level window
    GtkWidget* vboxtop = gtk_vbox_new(FALSE, 3);
    gtk_container_add(GTK_CONTAINER(top_window), vboxtop);   

    // add title (header) in vboxtop
    create_title(GTK_VBOX(vboxtop), _("Settings"), _("MYIREX Account"));

    // add back/exit bar below title (header) in vboxtop
    GtkWidget* view = create_settingsview();
    gtk_box_pack_start(GTK_BOX(vboxtop), view, FALSE, FALSE,0 ); 
    g_signal_connect(view, "row-activated",   G_CALLBACK(on_listview_row_activated),   NULL);
    g_signal_connect(view, "navigate-cursor", G_CALLBACK(on_listview_navigate_cursor), NULL );
    g_signal_connect(view, "focus-in-event", G_CALLBACK(on_focus_in), NULL );
    g_signal_connect(view, "focus-out-event", G_CALLBACK(on_focus_out), NULL );

    // add alignment for frame below back/exit bar in vboxtop
    GtkWidget* top_frame_alignment = gtk_alignment_new(0.0, 0.0, 1.0, 0.0 );
    gtk_box_pack_start(GTK_BOX(vboxtop), top_frame_alignment, FALSE, FALSE, 0);

    // add frame in top_frame_alignment
    GtkWidget* top_frame  = gtk_frame_new(NULL);
    gtk_widget_set_name(top_frame, "irex-margins-frame");
    gtk_container_add(GTK_CONTAINER(top_frame_alignment), top_frame);
    gtk_container_set_border_width(GTK_CONTAINER(top_frame), 3  );

    // Alignment.
    GtkWidget* alignment = gtk_alignment_new(0, 0, 1.0, 1.0);
    gtk_container_add(GTK_CONTAINER(top_frame), alignment);
    gtk_alignment_set_padding(GTK_ALIGNMENT(alignment),
                              WINDOW_TOP_ALT_PADDING,
                              WINDOW_BOTTOM_PADDING,
                              WINDOW_H_PADDING,
                              WINDOW_H_PADDING);
   
    // add  vbox in top frame 
    GtkWidget* vbox = gtk_vbox_new(FALSE, SMALL_SPACING);
    gtk_container_add(GTK_CONTAINER(alignment), vbox);

    // The label ("MyiRex Account Information").
    GtkWidget* label = gtk_label_new(_("MYIREX Account Information"));
    gtk_widget_set_name(label, "irex-normal-text");
    gtk_widget_set_size_request(label, -1, -1);
    gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
    gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 0);

    // the second label
    label = gtk_label_new(_("A MYIREX account is used to deliver newspaper "
                            "and periodical subscriptions directly to your device."
                            ));
    gtk_widget_set_name(label, "irex-sans-small-grey-italic");
    gtk_widget_set_size_request(label, SETTINGS_LABEL_MAX_WIDTH - 15 , -1);
    gtk_label_set_justify(GTK_LABEL(label), GTK_JUSTIFY_LEFT);
    gtk_label_set_line_wrap(GTK_LABEL(label), TRUE);
    gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.0);
    gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 0);

    // hbox with username/email
    GtkWidget* hbox = gtk_hbox_new(FALSE,0);
    gtk_box_pack_start(GTK_BOX(vbox),hbox , FALSE, FALSE, SMALL_SPACING);

    // the label "email"
    label = gtk_label_new(_("Email"));
    gtk_widget_set_name(label, "irex-normal-text");
    gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
    gtk_widget_set_size_request(label, ENTRY_LABEL_WIDTH, -1);
    gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0);  
    
    // the text entry for the email
    g_entry_email = ergtk_entry_new();
    gtk_widget_set_size_request(g_entry_email,ENTRY_EMAIL_WIDTH, -1);
    gtk_box_pack_start(GTK_BOX(hbox), g_entry_email, TRUE, TRUE, SMALL_SPACING);
    g_object_set(G_OBJECT(g_entry_email), "im-context-inhibit", TRUE, NULL);
     
    // second hbox for password
    hbox = gtk_hbox_new(FALSE,0);
    gtk_box_pack_start(GTK_BOX(vbox),hbox , FALSE, FALSE, SMALL_SPACING);

    // the label "password"
    label = gtk_label_new(_("Password"));
    gtk_widget_set_name(label, "irex-normal-text");
    gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
    gtk_widget_set_size_request(label, ENTRY_LABEL_WIDTH, -1);
    gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 0);  
    
    // the text entry for the password
    g_entry_passwd = ergtk_entry_new();
    gtk_entry_set_visibility(GTK_ENTRY(g_entry_passwd),FALSE);
    gtk_entry_set_max_length(GTK_ENTRY(g_entry_passwd),ENTRY_PASSWD_LENGTH_LIMITATION);
    gtk_widget_set_size_request(g_entry_passwd,ENTRY_PASSWD_WIDTH, -1);
    gtk_box_pack_start(GTK_BOX(hbox), g_entry_passwd, TRUE, TRUE, SMALL_SPACING);
    g_object_set(G_OBJECT(g_entry_passwd), "im-context-inhibit", TRUE, NULL);

    // hbuttonbox for the save button
    GtkWidget* hbuttonbox = gtk_hbutton_box_new();
    gtk_box_set_spacing(GTK_BOX(hbuttonbox), 15);
    gtk_hbutton_box_set_layout_default(GTK_BUTTONBOX_END);
    gtk_box_pack_start(GTK_BOX(vbox), hbuttonbox, FALSE, FALSE, 0);
    // the save button
    GtkWidget* save_button = gtk_button_new_with_label( _("Save") );
    gtk_container_add(GTK_CONTAINER(hbuttonbox),save_button);
    g_signal_connect(G_OBJECT(save_button), "clicked", G_CALLBACK(on_save_button_clicked), NULL);

    // Add separator here.
    GtkWidget* separator = create_separator_widgets();
    gtk_widget_set_name(separator, "irex-separator-invisible");
    gtk_box_pack_start(GTK_BOX(vbox), separator, FALSE, FALSE, 0);

    // label "To create ..."
    label = gtk_label_new(NULL);
    gtk_label_set_markup(GTK_LABEL(label), _("To create a MYIREX account, use a computer with internet "
      "connection and go to <b>www.irexreader.com/setup</b> for directions."));
    gtk_widget_set_name(label, "irex-sans-small-grey-italic");
    gtk_label_set_line_wrap(GTK_LABEL(label), TRUE);
    gtk_widget_set_size_request(label, SETTINGS_LABEL_MAX_WIDTH, -1);
    gtk_misc_set_alignment(GTK_MISC(label), 0.0, 1.0);
    gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 10);
    
    //  separator here.
    separator = create_separator_widgets();
    gtk_widget_set_name(separator, "irex-separator-invisible");
    gtk_box_pack_start(GTK_BOX(vbox), separator, FALSE, FALSE, 0);
    
    // alignment for the keyboard (prevent ugly scaled buttons)
    GtkWidget* keyb_align = gtk_alignment_new(0.5, 0.5, 0.0, 0.0);
    gtk_box_pack_start(GTK_BOX(vbox), keyb_align, FALSE, FALSE, 0 );
   
    // keyboard in keyb_align
    GtkWidget* keyboard = ergtk_keyb_new();
    gtk_container_add(GTK_CONTAINER(keyb_align), keyboard );

    // Update widget with current settings.
    init_widgets_with_settings();
   
    g_myirex_window = top_window;

    gtk_widget_grab_focus(view);

    gtk_widget_show_all(top_window);

    return top_window;
}

void load_account_settings()
{
    gchar* email_gconf  = (gchar*)get_value_string(GCONF_DOWNLOAD_ACCOUNT_EMAIL);
    gchar* password_gconf = (gchar*)get_value_string(GCONF_DOWNLOAD_ACCOUNT_PASSWD);

    if (!email_gconf || !password_gconf)
    {
        ERRORPRINTF("Error reading settings from gconf");
        _exit(1);
    }

    strncpy(g_email, email_gconf, sizeof(g_email));
    g_email[sizeof(g_email)-1] = '\0';
    
    if (strcmp(password_gconf, "") != 0)
    {
        gchar* password_fixed = fix_base64_missing_equals(password_gconf);
        gsize len = 0;
        guchar* password = g_base64_decode(password_fixed, &len);
        g_free(password_fixed);
        strncpy(g_passwd, (gchar*)password, sizeof(g_passwd));
    }
    else
    {
        strncpy(g_passwd, password_gconf,  sizeof(g_passwd));
    }
    g_passwd[sizeof(g_passwd)-1] = '\0';

    g_free(email_gconf);
    g_free(password_gconf);
}


void save_account_settings()
{
    const gchar* email = gtk_entry_get_text(GTK_ENTRY(g_entry_email));
    const gchar* passwd = gtk_entry_get_text(GTK_ENTRY(g_entry_passwd));
    if (email != NULL)
    {
      set_value_string(GCONF_DOWNLOAD_ACCOUNT_EMAIL, email);

        if (passwd != NULL)
        {
            if (strcmp(passwd, "") == 0)
            {
                set_value_string(GCONF_DOWNLOAD_ACCOUNT_PASSWD, passwd);
            }
            else
            {
                gsize len = strlen(passwd);  
                gchar* passwd_encode = g_base64_encode((const guchar*)passwd, len); 
                gchar* passwd_cut = cut_base64_existing_equals(passwd_encode);
                set_value_string(GCONF_DOWNLOAD_ACCOUNT_PASSWD, passwd_cut);
                g_free(passwd_encode);
                g_free(passwd_cut);
                
                run_dialog(GTK_MESSAGE_INFO, _("Your MYIREX account has been saved"));
            }
        }
    }
}


//============================================================================
// Local Functions Implementation
//============================================================================

static gchar* fix_base64_missing_equals(gchar* input)
{
    int len = strlen(input);
    gchar* password_fixed = g_strndup(input, len+2);

    switch (len % 4) 
    {
      case 0:
          break;
      case 1:
          ERRORPRINTF("corrupted base64 string '%s'", input);
          break;
      case 2:
          password_fixed[len+1] = '=';
      case 3:
          password_fixed[len] = '=';
          password_fixed[len+2] = 0;
          break;
    }
    return password_fixed;
}

static gchar* cut_base64_existing_equals(gchar* input)
{
    if (input == NULL) { return NULL; }
    int len = strlen(input);
    gchar* password_cut = g_strndup(input, len);
    int i;
    for(i = len -1; i >= 0; i--)
    {
      if (password_cut[i] != '=') { break ; }
      password_cut[i] = 0;
    }
    //it means more than 2 "=' need to be cut
    if (i < len - 3)
    {
      ERRORPRINTF("corrupted base64 string '%s'", input);
      g_free(password_cut);
      return NULL;
    } 
    return password_cut;
   
}


void     init_widgets_with_settings()
{
  gtk_entry_set_text(GTK_ENTRY(g_entry_email),(const gchar*) g_email);  
  gtk_entry_set_text(GTK_ENTRY(g_entry_passwd),(const gchar*) g_passwd);   
  return;
}

static gboolean on_focus_in(GtkWidget* widget, gpointer data )
{
    g_assert(widget != NULL ) ;
    ergtk_list_view_set_cursor( ERGTK_LIST_VIEW(widget), 0); // row = 0;
    return FALSE;
}

static gboolean on_focus_out(GtkWidget* widget, gpointer data )
{
    g_assert(widget != NULL ) ;
    GtkTreeSelection* my_selection = gtk_tree_view_get_selection((GtkTreeView*) widget);
    g_assert( my_selection != NULL ) ;
    gtk_tree_selection_unselect_all(my_selection);
    return FALSE;
}

static void on_listview_row_activated ( GtkTreeView       *view,
                                        GtkTreePath       *path,
                                        GtkTreeViewColumn *column,
                                        gpointer          user_data )
{
    main_quit();
}

static void on_listview_navigate_cursor ( erGtkListView         *er_listview,
        erGtkListViewKeyPress keycode,
        gpointer              user_data )
{
   GtkTreeSelection* my_selection = gtk_tree_view_get_selection((GtkTreeView*) er_listview);
   g_assert(my_selection != NULL ) ;

    // determine new cursor position
    switch (keycode)
    {
        case ERGTK_LIST_VIEW_PRESS_SHORT_UP:
        case ERGTK_LIST_VIEW_PRESS_LONG_UP:
            break;
        case ERGTK_LIST_VIEW_PRESS_SHORT_DOWN:
        case ERGTK_LIST_VIEW_PRESS_LONG_DOWN:
            gtk_widget_grab_focus(GTK_WIDGET(g_entry_email));
            // this works because we only have one row
            gtk_tree_selection_unselect_all(my_selection);
            break;
        default:
            LOGPRINTF("illegal erGtkListViewKeyPress [%d]\n", keycode);
            ;  // ignore
            break;
    }

}

static gboolean on_save_button_clicked(GtkWidget* widget, gpointer data)
{
    save_account_settings(); 
    return FALSE;
}

static void run_dialog (GtkMessageType type, const gchar *msg)
{
    LOGPRINTF("entry: msg [%s]\n", msg);

    GtkWidget *dialog = gtk_message_dialog_new(
            GTK_WINDOW(g_myirex_window),
            GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
            type,
            GTK_BUTTONS_OK,
            msg );
    gtk_window_set_deletable( GTK_WINDOW(dialog), FALSE );
    ipc_menu_block();
    gtk_dialog_run( GTK_DIALOG(dialog) );
    ipc_menu_unblock();
    gtk_widget_destroy( dialog );
}