claws-mail/src/uri_opener.c

/*
 * Claws Mail -- a GTK based, lightweight, and fast e-mail client
 * Copyright (C) 1999-2022 the Claws Mail team and Colin Leroy
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */
#ifdef HAVE_CONFIG_H
#  include "config.h"
#include "claws-features.h"
#endif

#include <gtk/gtk.h>
#include <glib.h>
#include <glib/gi18n.h>
#include <gdk/gdkkeysyms.h>
#include <sys/types.h>
#include <dirent.h>

#include "manage_window.h"
#include "utils.h"
#include "mainwindow.h"
#include "gtkutils.h"
#include "alertpanel.h"
#include "textview.h"
#include "mimeview.h"
#include "prefs_common.h"
#include "menu.h"

enum {
	URI_OPENER_URL,
	URI_OPENER_DATA,
	N_URI_OPENER_COLUMNS
};


static struct URIOpener
{
	GtkWidget *window;
	GtkWidget *hbox_scroll;
	GtkWidget *hbox1;
	GtkWidget *vbox1;
	GtkWidget *label;
	GtkWidget *urilist;
	GtkWidget *scrolledwin;
	GtkWidget *open_btn;
	GtkWidget *close_btn;
	MessageView *msgview;
	GSList    *uris;
} opener;

static void uri_opener_list_copy_cb(gpointer action, gpointer data);

static GtkActionGroup *uri_opener_popup_action = NULL;
static GtkWidget *uri_opener_popup_menu = NULL;

static GtkActionEntry uri_opener_popup_entries[] =
{
	{"UriOpenerPopup",		NULL, "UriOpenerPopup", NULL, NULL, NULL },
	{"UriOpenerPopup/Copy",	NULL, N_("C_opy URL"), NULL, NULL, G_CALLBACK(uri_opener_list_copy_cb) }
};

static void uri_opener_load_uris	(void);
static void uri_opener_open_cb		(GtkWidget *widget, gpointer data);
static void uri_opener_close_cb		(GtkWidget *widget, gpointer data);
static void uri_opener_select_all_cb	(GtkWidget *widget, gpointer data);
static gboolean key_pressed		(GtkWidget *widget, GdkEventKey *event,
					 gpointer data);
static void uri_opener_double_clicked(GtkTreeView		*list_view,
				   	GtkTreePath		*path,
				   	GtkTreeViewColumn	*column,
				   	gpointer		 data);
static void uri_opener_create(void);
static gint uri_opener_list_btn_pressed(GtkWidget *widget, GdkEventButton *event,
				    GtkTreeView *list_view);
static gboolean uri_opener_list_popup_menu(GtkWidget *widget, gpointer data);

void uri_opener_open(MessageView *msgview, GSList *uris)
{
	cm_return_if_fail(msgview);
	cm_return_if_fail(msgview->mimeview);
	cm_return_if_fail(msgview->mimeview->textview);

	if (!opener.window)
		uri_opener_create();

	manage_window_set_transient(GTK_WINDOW(opener.window));
	gtk_widget_grab_focus(opener.close_btn);
	
	if (uris == NULL) {
		alertpanel_notice(_("There are no URLs in this email."));
		return;
	}
	
	opener.msgview = msgview;
	opener.uris = g_slist_copy(uris);
	uri_opener_load_uris();

	gtk_widget_show(opener.window);
	gtk_widget_grab_focus(opener.urilist);
	gtk_window_set_modal(GTK_WINDOW(opener.window), TRUE);
}

static GtkListStore* uri_opener_create_data_store(void)
{
	return gtk_list_store_new(N_URI_OPENER_COLUMNS,
				  G_TYPE_STRING,
				  G_TYPE_POINTER,
				  -1);
}

static void uri_opener_create_list_view_columns(GtkWidget *list_view)
{
	GtkTreeViewColumn *column;
	GtkCellRenderer *renderer;

	renderer = gtk_cell_renderer_text_new();
	column = gtk_tree_view_column_new_with_attributes
		(_("Included URLs:"),
		 renderer,
		 "markup", URI_OPENER_URL,
		 NULL);
	gtk_tree_view_append_column(GTK_TREE_VIEW(list_view), column);		
}

static GtkWidget *uri_opener_list_view_create(void)
{
	GtkTreeView *list_view;
	GtkTreeSelection *selector;
	GtkTreeModel *model;

	model = GTK_TREE_MODEL(uri_opener_create_data_store());
	list_view = GTK_TREE_VIEW(gtk_tree_view_new_with_model(model));
	g_object_unref(model);	
	
	gtk_tree_view_set_rules_hint(list_view, prefs_common.use_stripes_everywhere);
	
	selector = gtk_tree_view_get_selection(list_view);
	gtk_tree_selection_set_mode(selector, GTK_SELECTION_MULTIPLE);

	g_signal_connect(G_OBJECT(list_view), "row_activated",
	                 G_CALLBACK(uri_opener_double_clicked),
	                 list_view);
	g_signal_connect(G_OBJECT(list_view), "popup-menu",
	                 G_CALLBACK(uri_opener_list_popup_menu),
	                 list_view);
	g_signal_connect(G_OBJECT(list_view), "button-press-event",
	                 G_CALLBACK(uri_opener_list_btn_pressed),
	                 list_view);

	/* create the columns */
	uri_opener_create_list_view_columns(GTK_WIDGET(list_view));

	return GTK_WIDGET(list_view);

}

static GtkWidget *uri_opener_scrolled_win_create(void)
{
	GtkWidget *scrolledwin;

	scrolledwin = gtk_scrolled_window_new(NULL, NULL);
	gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolledwin),
					    GTK_SHADOW_ETCHED_IN);
	gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledwin),
				       GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
				       
	gtk_widget_set_size_request(scrolledwin, 200, 250);
	gtk_widget_show(scrolledwin);
	
	return scrolledwin;
}

static void uri_opener_size_allocate_cb(GtkWidget *widget, GtkAllocation *allocation)
{
	cm_return_if_fail(allocation != NULL);

	gtk_window_get_size(GTK_WINDOW(widget),
		&prefs_common.uriopenerwin_width, &prefs_common.uriopenerwin_height);
}

static void uri_opener_create(void) 
{
	GtkWidget *window;
	GtkWidget *hbox_scroll;
	GtkWidget *hbox;
	GtkWidget *hbox1;
	GtkWidget *vbox1;
	GtkWidget *label;
	GtkWidget *urilist;
	GtkWidget *select_all_btn;
	GtkWidget *open_btn;
	GtkWidget *close_btn;
	GtkWidget *scrolledwin;
	static GdkGeometry geometry;

	window = gtkut_window_new(GTK_WINDOW_TOPLEVEL, "uri_opener");
	gtk_window_set_title (GTK_WINDOW(window),
			      C_("Dialog title", "Open URLs"));

	gtk_container_set_border_width (GTK_CONTAINER (window), 8);
	gtk_window_set_position (GTK_WINDOW (window), GTK_WIN_POS_CENTER);
	gtk_window_set_resizable(GTK_WINDOW (window), TRUE);
	gtk_window_set_type_hint(GTK_WINDOW(window), GDK_WINDOW_TYPE_HINT_DIALOG);
	g_signal_connect(G_OBJECT(window), "delete_event",
			 G_CALLBACK(uri_opener_close_cb), NULL);
	g_signal_connect (G_OBJECT(window), "size_allocate",
			 G_CALLBACK (uri_opener_size_allocate_cb), NULL);
	g_signal_connect(G_OBJECT(window), "key_press_event",
			 G_CALLBACK(key_pressed), NULL);
	MANAGE_WINDOW_SIGNALS_CONNECT (window);

	vbox1 = gtk_box_new(GTK_ORIENTATION_VERTICAL, 6);
	gtkut_stock_button_set_create(&hbox1, 
				      &open_btn, NULL, _("Open in browser"),
				      &close_btn, NULL, _("Close"),
				      NULL, NULL, NULL);

	g_signal_connect(G_OBJECT(open_btn), "clicked",
			 G_CALLBACK(uri_opener_open_cb), NULL);

	g_signal_connect(G_OBJECT(close_btn), "clicked",
			 G_CALLBACK(uri_opener_close_cb), NULL);

	urilist = uri_opener_list_view_create();
	
	label = gtk_label_new(_("Any phishing URLs are shown in red, followed by the actual URL."));
	gtk_label_set_xalign(GTK_LABEL(label), 0.0);
	gtk_box_pack_start(GTK_BOX(vbox1), label, FALSE, TRUE, 0);
	
	scrolledwin = uri_opener_scrolled_win_create();
	hbox_scroll = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0);
	gtk_box_pack_start(GTK_BOX(hbox_scroll), scrolledwin, TRUE, TRUE, 0);
	
	select_all_btn = gtk_button_new_with_label(_("Select All"));
	g_signal_connect(G_OBJECT(select_all_btn), "clicked",
			 G_CALLBACK(uri_opener_select_all_cb), NULL);	

	hbox = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0);
	gtk_box_pack_start(GTK_BOX(hbox), select_all_btn, FALSE, FALSE, 0);
	gtk_box_pack_start(GTK_BOX(hbox), gtk_label_new(""), TRUE, TRUE, 0);

	gtk_container_add(GTK_CONTAINER(scrolledwin), urilist);
	gtk_box_pack_start(GTK_BOX(vbox1), hbox_scroll, TRUE, TRUE, 0);
	gtk_box_pack_start(GTK_BOX(vbox1), hbox, FALSE, FALSE, 0);
	gtk_box_pack_start(GTK_BOX(vbox1), hbox1, FALSE, FALSE, 0);

	gtk_widget_show_all(vbox1);
	gtk_container_add(GTK_CONTAINER (window), vbox1);

	if (!geometry.min_height) {
		geometry.min_width = 450;
		geometry.min_height = 300;
	}

	gtk_window_set_geometry_hints(GTK_WINDOW(window), NULL, &geometry,
				      GDK_HINT_MIN_SIZE);
	gtk_window_set_default_size(GTK_WINDOW(window),
				    prefs_common.uriopenerwin_width,
				    prefs_common.uriopenerwin_height);

	opener.window = window;
	opener.hbox_scroll = hbox_scroll;
	opener.hbox1 = hbox1;
	opener.vbox1 = vbox1;
	opener.label = label;
	opener.urilist = urilist;
	opener.scrolledwin = scrolledwin;
	opener.open_btn = open_btn;
	opener.close_btn = close_btn;

}

static void uri_opener_list_view_insert_uri(GtkWidget *list_view,
						  GtkTreeIter *row_iter,
						  ClickableText *uri) 
{
	GtkTreeIter iter;
	GtkListStore *list_store = GTK_LIST_STORE(gtk_tree_view_get_model
					(GTK_TREE_VIEW(list_view)));
	gchar *visible = textview_get_visible_uri(opener.msgview->mimeview->textview, uri);
	
	gchar *label = NULL;

	if (visible && strcmp(visible, uri->uri)) {
		gboolean phishing_attempt = FALSE;
		if (strcmp(visible, uri->uri) != 0 && is_uri_string(visible)) {
		    gchar *uri_path;
		    gchar *visible_uri_path;

		    uri_path = get_uri_path(uri->uri);
		    visible_uri_path = get_uri_path(visible);
		    if (path_cmp(uri_path, visible_uri_path) != 0)
			    phishing_attempt = TRUE;
	    }
		if (phishing_attempt) {
			label = g_markup_printf_escaped("<span color=\"%s\"><b>%s</b></span>\n%s",
						gtkut_gdk_rgba_to_string(&prefs_common.color[COL_LOG_ERROR]), visible, uri->uri);
		} else
			label = g_markup_printf_escaped("%s",  uri->uri);
	}
	else
		label = g_markup_printf_escaped("%s", uri->uri);

	if (row_iter == NULL) {
		/* append new */
		gtk_list_store_append(list_store, &iter);
		gtk_list_store_set(list_store, &iter,
				   URI_OPENER_URL, label,
				   URI_OPENER_DATA, uri,
				   -1);
	} else {
		gtk_list_store_set(list_store, row_iter,
				   URI_OPENER_URL, label,
				   URI_OPENER_DATA, uri,
				   -1);
	}
	g_free(visible);
	g_free(label);
}

static void uri_opener_list_view_clear_uris(GtkWidget *list_view)
{
	GtkListStore *list_store = GTK_LIST_STORE(gtk_tree_view_get_model
					(GTK_TREE_VIEW(list_view)));
	gtk_list_store_clear(list_store);
}

static void uri_opener_load_uris(void) 
{
	GSList *cur = opener.uris;
	GtkTreeModel *model;
	GtkTreeSelection *selection;
	GtkTreeIter iter;

	uri_opener_list_view_clear_uris(opener.urilist);
	for (; cur; cur = cur->next) {
		ClickableText *uri = (ClickableText *)cur->data;
		uri_opener_list_view_insert_uri(opener.urilist, NULL, uri);
	}
	
	g_object_ref(opener.urilist);
	gtk_container_remove(GTK_CONTAINER(opener.scrolledwin), opener.urilist);
	gtk_widget_destroy(opener.scrolledwin);
	
	opener.scrolledwin = uri_opener_scrolled_win_create();
	gtk_container_add(GTK_CONTAINER(opener.scrolledwin), opener.urilist);
	gtk_box_pack_start(GTK_BOX(opener.hbox_scroll),
			   opener.scrolledwin, TRUE, TRUE, 0);
	g_object_unref(opener.urilist);
	
	model = gtk_tree_view_get_model(GTK_TREE_VIEW(opener.urilist));
	if (!gtk_tree_model_get_iter_first(model, &iter))
		return;
	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(opener.urilist));
	gtk_tree_selection_select_iter(selection, &iter);
}

static void uri_opener_close(void) 
{
	g_slist_free(opener.uris);
	opener.uris = NULL;
	gtk_window_set_modal(GTK_WINDOW(opener.window), FALSE);
	gtk_widget_hide(opener.window);
}

static void uri_opener_close_cb(GtkWidget *widget,
			         gpointer data) 
{
	uri_opener_close();
}

static gboolean key_pressed(GtkWidget *widget, GdkEventKey *event, gpointer data)
{
	if (event) {
		if (event->keyval == GDK_KEY_Escape)
		    uri_opener_close();

		if ((event->keyval == GDK_KEY_c || event->keyval == GDK_KEY_x) &&
				(event->state & GDK_CONTROL_MASK)) {
			uri_opener_list_copy_cb(NULL, NULL);
			return TRUE;
		}
	}

	return FALSE;
}

static void uri_opener_double_clicked(GtkTreeView		*list_view,
				   	GtkTreePath		*path,
				   	GtkTreeViewColumn	*column,
				   	gpointer		 data)
{
	ClickableText *uri;
	GtkTreeIter iter;
	GtkTreeModel *model = gtk_tree_view_get_model(list_view);

	if (!gtk_tree_model_get_iter(model, &iter, path))
		return;

	gtk_tree_model_get(model, &iter, 
			   URI_OPENER_DATA, &uri,
			   -1);

	if (!uri)
		return;

	if (textview_uri_security_check(opener.msgview->mimeview->textview, uri,
					FALSE) == TRUE) 
		open_uri(uri->uri,
			 prefs_common_get_uri_cmd());
}

static void uri_opener_open_cb(GtkWidget *widget, 
			        gpointer data) 
{
	ClickableText *uri;
	GtkTreeIter sel;
	GtkTreeModel *model;
	GtkTreeSelection *selection;
	GList *selected, *cur;

	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(opener.urilist));
	selected  = gtk_tree_selection_get_selected_rows(selection, &model);
	cm_return_if_fail(selected);

	for(cur = selected; cur != NULL; cur = g_list_next(cur))
	{ 
		if(!gtk_tree_model_get_iter(model, &sel, (GtkTreePath *)cur->data))
			continue;
		
		gtk_tree_model_get(model, &sel,
			   URI_OPENER_DATA, &uri,
			   -1);
		if (!uri)
			continue;

		if (textview_uri_security_check(opener.msgview->mimeview->textview, uri,
						FALSE) == TRUE) 
			open_uri(uri->uri,
				 prefs_common_get_uri_cmd());
	}
	
	g_list_foreach(selected, (GFunc)gtk_tree_path_free, NULL);
	g_list_free(selected);
}

static void uri_opener_select_all_cb(GtkWidget *widget, 
				     gpointer data)
{
	GtkTreeSelection *selection = gtk_tree_view_get_selection(
						GTK_TREE_VIEW(opener.urilist));
	gtk_tree_selection_select_all(selection);
}

static void uri_opener_list_copy_cb(gpointer action, gpointer data)
{
	ClickableText *uri;
	GtkTreeIter sel;
	GtkTreeModel *model;
	GtkTreeSelection *selection;
	GList *selected, *cur;
	GString *uri_list_str = NULL;

	selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(opener.urilist));
	selected  = gtk_tree_selection_get_selected_rows(selection, &model);
	cm_return_if_fail(selected);

	for(cur = selected; cur != NULL; cur = g_list_next(cur))
	{ 
		if(!gtk_tree_model_get_iter(model, &sel, (GtkTreePath *)cur->data))
			continue;

		gtk_tree_model_get(model, &sel,
			   URI_OPENER_DATA, &uri,
			   -1);
		if (!uri)
			continue;

		if (!uri_list_str)
			uri_list_str = g_string_new((const gchar*)uri->uri);
		else
			g_string_append_printf(uri_list_str, "\n%s", uri->uri);
	}
	if (uri_list_str) {
		GtkClipboard *clip, *clip2;

		if (textview_uri_security_check(opener.msgview->mimeview->textview, uri,
						TRUE) == TRUE) {
			clip = gtk_widget_get_clipboard (opener.window, GDK_SELECTION_PRIMARY);
			clip2 = gtk_widget_get_clipboard (opener.window, GDK_SELECTION_CLIPBOARD);
			gtk_clipboard_set_text (clip, uri_list_str->str, uri_list_str->len);
			gtk_clipboard_set_text (clip2, uri_list_str->str, uri_list_str->len);
		}
		g_string_free(uri_list_str, TRUE);
	}
	
	g_list_foreach(selected, (GFunc)gtk_tree_path_free, NULL);
	g_list_free(selected);
}

static gint uri_opener_list_btn_pressed(GtkWidget *widget, GdkEventButton *event,
				    GtkTreeView *list_view)
{
	if (event) {
		/* right-button click */
		if (event->button == 3) {
			GtkTreeModel *model = gtk_tree_view_get_model(list_view);
	        GtkTreeSelection *selection = gtk_tree_view_get_selection(GTK_TREE_VIEW(list_view));
	        GList *selected = gtk_tree_selection_get_selected_rows(selection, &model);

			if (!uri_opener_popup_menu) {
				uri_opener_popup_action = cm_menu_create_action_group("UriOpenerPopup", uri_opener_popup_entries,
					G_N_ELEMENTS(uri_opener_popup_entries), (gpointer)list_view);
				MENUITEM_ADDUI("/Menus", "UriOpenerPopup", "UriOpenerPopup", GTK_UI_MANAGER_MENU)
				MENUITEM_ADDUI("/Menus/UriOpenerPopup", "Copy", "UriOpenerPopup/Copy", GTK_UI_MANAGER_MENUITEM)
				uri_opener_popup_menu = gtk_menu_item_get_submenu(GTK_MENU_ITEM(
					gtk_ui_manager_get_widget(gtkut_ui_manager(), "/Menus/UriOpenerPopup")) );
			}

			/* grey out some popup menu item if there is no selected row */
			cm_menu_set_sensitive("UriOpenerPopup/Copy", (selected != NULL));

			gtk_menu_popup_at_pointer(GTK_MENU(uri_opener_popup_menu), NULL);
		}
	}
	return FALSE;
}

static gboolean uri_opener_list_popup_menu(GtkWidget *widget, gpointer data)
{
	GtkTreeView *list_view = (GtkTreeView *)data;
	GdkEventButton event;
	
	event.button = 3;
	event.time = gtk_get_current_event_time();
	
	uri_opener_list_btn_pressed(NULL, &event, list_view);

	return TRUE;
}