netsurf/riscos/sslcert.c

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/*
* Copyright 2006 John M Bell <jmb202@ecs.soton.ac.uk>
* Copyright 2010 Stephen Fryatt <stevef@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf 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 of the License.
*
* NetSurf 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/>.
*/
/** \file
* SSL Certificate verification UI (implementation)
*/
#include "utils/config.h"
#include <assert.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include "oslib/wimp.h"
#include "utils/log.h"
#include "utils/utils.h"
#include "content/content.h"
#include "content/hlcache.h"
#include "content/fetch.h"
#include "content/urldb.h"
#include "desktop/browser.h"
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#include "desktop/sslcert_viewer.h"
#include "desktop/tree.h"
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#include "riscos/dialog.h"
#include "riscos/sslcert.h"
#include "riscos/textarea.h"
#include "riscos/treeview.h"
#include "riscos/wimp.h"
#include "riscos/wimp_event.h"
#include "riscos/wimputils.h"
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#include "riscos/gui.h"
#define ICON_SSL_PANE 1
#define ICON_SSL_REJECT 3
#define ICON_SSL_ACCEPT 4
static wimp_window *ro_gui_cert_dialog_template;
static wimp_window *ro_gui_cert_tree_template;
struct ro_sslcert
{
wimp_w window;
wimp_w pane;
ro_treeview *tv;
struct sslcert_session_data *data;
};
static void ro_gui_cert_accept(wimp_pointer *pointer);
static void ro_gui_cert_reject(wimp_pointer *pointer);
static void ro_gui_cert_close_window(wimp_w w);
static void ro_gui_cert_release_window(struct ro_sslcert *s);
/**
* Load and initialise the certificate window template
*/
void ro_gui_cert_preinitialise(void)
{
/* Load templates for the SSL windows and adjust the tree window
* flags to suit.
*/
ro_gui_cert_dialog_template = ro_gui_dialog_load_template("sslcert");
ro_gui_cert_tree_template = ro_gui_dialog_load_template("tree");
ro_gui_cert_tree_template->flags &= ~(wimp_WINDOW_MOVEABLE |
wimp_WINDOW_BACK_ICON |
wimp_WINDOW_CLOSE_ICON |
wimp_WINDOW_TITLE_ICON |
wimp_WINDOW_SIZE_ICON |
wimp_WINDOW_TOGGLE_ICON);
}
/**
* Load and initialise the certificate window template
*/
void ro_gui_cert_postinitialise(void)
{
/* Initialise the SSL module. */
}
/**
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* Prompt the user to verify a certificate with issuse.
*
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* \param url The URL being verified.
* \param certs The certificate to be verified
* \param num The number of certificates to be verified.
* \param cb Callback upon user decision.
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* \param cbpw Context pointer passed to cb
*/
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void gui_cert_verify(nsurl *url,
const struct ssl_cert_info *certs, unsigned long num,
nserror (*cb)(bool proceed, void *pw), void *cbpw)
{
struct ro_sslcert *sslcert_window;
wimp_window_state state;
wimp_icon_state istate;
wimp_window_info info;
os_error *error;
bool set_extent;
assert(certs);
sslcert_window = malloc(sizeof(struct ro_sslcert));
if (sslcert_window == NULL) {
LOG("Failed to allocate memory for SSL Cert Dialog");
return;
}
/* Create the SSL window and its pane. */
error = xwimp_create_window(ro_gui_cert_dialog_template,
&(sslcert_window->window));
if (error) {
LOG("xwimp_create_window: 0x%x: %s", error->errnum, error->errmess);
free(sslcert_window);
return;
}
error = xwimp_create_window(ro_gui_cert_tree_template,
&(sslcert_window->pane));
if (error) {
LOG("xwimp_create_window: 0x%x: %s", error->errnum, error->errmess);
free(sslcert_window);
return;
}
/* Create the SSL data and build a tree from it. */
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sslcert_viewer_create_session_data(num, url,
cb, cbpw, certs, &sslcert_window->data);
ssl_current_session = sslcert_window->data;
sslcert_window->tv = ro_treeview_create(sslcert_window->pane,
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NULL, NULL, TREE_SSLCERT);
if (sslcert_window->tv == NULL) {
LOG("Failed to allocate treeview");
free(sslcert_window);
return;
}
/* Set up the certificate window event handling.
*
* (The action buttons are registered as button events, not OK and
* Cancel, as both need to carry out actions.)
*/
ro_gui_wimp_event_set_user_data(sslcert_window->window, sslcert_window);
ro_gui_wimp_event_register_close_window(sslcert_window->window,
ro_gui_cert_close_window);
ro_gui_wimp_event_register_button(sslcert_window->window,
ICON_SSL_REJECT, ro_gui_cert_reject);
ro_gui_wimp_event_register_button(sslcert_window->window,
ICON_SSL_ACCEPT, ro_gui_cert_accept);
ro_gui_dialog_open_persistent(NULL, sslcert_window->window, false);
/* Nest the tree window inside the pane window. To do this, we:
* - Get the current pane extent,
* - Get the parent window position and the location of the pane-
* locating icon inside it,
* - Set the visible area of the pane to suit,
* - Check that the pane extents are OK for this visible area, and
* increase them if necessary,
* - Before finally opening the pane as a nested part of the parent.
*/
info.w = sslcert_window->pane;
error = xwimp_get_window_info_header_only(&info);
if (error) {
ro_gui_cert_release_window(sslcert_window);
LOG("xwimp_get_window_info: 0x%x: %s", error->errnum, error->errmess);
return;
}
state.w = sslcert_window->window;
error = xwimp_get_window_state(&state);
if (error) {
ro_gui_cert_release_window(sslcert_window);
LOG("xwimp_get_window_state: 0x%x: %s", error->errnum, error->errmess);
return;
}
istate.w = sslcert_window->window;
istate.i = ICON_SSL_PANE;
error = xwimp_get_icon_state(&istate);
if (error) {
ro_gui_cert_release_window(sslcert_window);
LOG("xwimp_get_icon_state: 0x%x: %s", error->errnum, error->errmess);
return;
}
state.w = sslcert_window->pane;
state.visible.x1 = state.visible.x0 + istate.icon.extent.x1 - 20 -
ro_get_vscroll_width(sslcert_window->pane);
state.visible.x0 += istate.icon.extent.x0 + 20;
state.visible.y0 = state.visible.y1 + istate.icon.extent.y0 + 20 +
ro_get_hscroll_height(sslcert_window->pane);
state.visible.y1 += istate.icon.extent.y1 - 32;
set_extent = false;
if ((info.extent.x1 - info.extent.x0) <
(state.visible.x1 - state.visible.x0)) {
info.extent.x0 = 0;
info.extent.x1 = state.visible.x1 - state.visible.x0;
set_extent = true;
}
if ((info.extent.y1 - info.extent.y0) <
(state.visible.y1 - state.visible.y0)) {
info.extent.y1 = 0;
info.extent.x1 = state.visible.y0 - state.visible.y1;
set_extent = true;
}
if (set_extent) {
error = xwimp_set_extent(sslcert_window->pane, &(info.extent));
if (error) {
ro_gui_cert_release_window(sslcert_window);
LOG("xwimp_set_extent: 0x%x: %s", error->errnum, error->errmess);
return;
}
}
error = xwimp_open_window_nested(PTR_WIMP_OPEN(&state),
sslcert_window->window,
wimp_CHILD_LINKS_PARENT_VISIBLE_BOTTOM_OR_LEFT
<< wimp_CHILD_XORIGIN_SHIFT |
wimp_CHILD_LINKS_PARENT_VISIBLE_TOP_OR_RIGHT
<< wimp_CHILD_YORIGIN_SHIFT |
wimp_CHILD_LINKS_PARENT_VISIBLE_BOTTOM_OR_LEFT
<< wimp_CHILD_LS_EDGE_SHIFT |
wimp_CHILD_LINKS_PARENT_VISIBLE_BOTTOM_OR_LEFT
<< wimp_CHILD_RS_EDGE_SHIFT);
if (error) {
ro_gui_cert_release_window(sslcert_window);
LOG("xwimp_open_window_nested: 0x%x: %s", error->errnum, error->errmess);
ro_gui_cert_release_window(sslcert_window);
return;
}
ro_treeview_set_origin(sslcert_window->tv, 0, 0);
}
/**
* Handle acceptance of certificate via event callback.
*
* \param *pointer The wimp pointer block.
*/
void ro_gui_cert_accept(wimp_pointer *pointer)
{
struct ro_sslcert *s;
s = (struct ro_sslcert *) ro_gui_wimp_event_get_user_data(pointer->w);
if (s != NULL) {
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sslcert_viewer_accept(s->data);
ro_gui_dialog_close(s->window);
ro_gui_cert_release_window(s);
}
}
/**
* Handle rejection of certificate via event callback.
*
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* \param pointer The wimp pointer block.
*/
void ro_gui_cert_reject(wimp_pointer *pointer)
{
struct ro_sslcert *s;
s = (struct ro_sslcert *) ro_gui_wimp_event_get_user_data(pointer->w);
if (s != NULL) {
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sslcert_viewer_reject(s->data);
ro_gui_dialog_close(s->window);
ro_gui_cert_release_window(s);
}
}
/**
* Callback to handle the closure of the SSL dialogue by other means.
*
* \param w The window being closed.
*/
static void ro_gui_cert_close_window(wimp_w w)
{
struct ro_sslcert *s;
s = (struct ro_sslcert *) ro_gui_wimp_event_get_user_data(w);
if (s != NULL)
ro_gui_cert_release_window(s);
}
/**
* Handle closing of the RISC OS certificate verification dialog, deleting
* the windows and freeing up the treeview and data block.
*
* \param *s The data block associated with the dialogue.
*/
void ro_gui_cert_release_window(struct ro_sslcert *s)
{
os_error *error;
if (s == NULL)
return;
LOG("Releasing SSL data: 0x%x", (unsigned)s);
ro_gui_wimp_event_finalise(s->window);
ro_treeview_destroy(s->tv);
error = xwimp_delete_window(s->window);
if (error) {
LOG("xwimp_delete_window: 0x%x:%s", error->errnum, error->errmess);
ro_warn_user("WimpError", error->errmess);
}
error = xwimp_delete_window(s->pane);
if (error) {
LOG("xwimp_delete_window: 0x%x:%s", error->errnum, error->errmess);
ro_warn_user("WimpError", error->errmess);
}
free(s);
}