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netsurf/desktop/browser_window.c

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/*
* Copyright 2008 Michael Drake <tlsa@netsurf-browser.org>
* Copyright 2010 Daniel Silverstone <dsilvers@digital-scurf.org>
* Copyright 2010-2020 Vincent Sanders <vince@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
*
* Browser window creation and manipulation implementation.
*/
#include "utils/config.h"
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <nsutils/time.h>
#include "utils/errors.h"
#include "utils/log.h"
#include "utils/corestrings.h"
#include "utils/messages.h"
#include "utils/nsoption.h"
#include "netsurf/types.h"
#include "netsurf/browser_window.h"
#include "netsurf/window.h"
#include "netsurf/misc.h"
#include "netsurf/content.h"
#include "netsurf/search.h"
#include "netsurf/plotters.h"
#include "content/content.h"
#include "content/hlcache.h"
#include "content/urldb.h"
#include "content/content_debug.h"
#include "html/html.h"
#include "html/form_internal.h"
#include "javascript/js.h"
#include "desktop/browser_private.h"
#include "desktop/scrollbar.h"
#include "desktop/gui_internal.h"
#include "desktop/download.h"
#include "desktop/frames.h"
#include "desktop/global_history.h"
#include "desktop/textinput.h"
#include "desktop/hotlist.h"
#include "desktop/knockout.h"
#include "desktop/browser_history.h"
#include "desktop/theme.h"
#ifdef WITH_THEME_INSTALL
#include "desktop/theme.h"
#endif
/**
* smallest scale that can be applied to a browser window
*/
#define SCALE_MINIMUM 0.2
/**
* largests scale that can be applied to a browser window
*/
#define SCALE_MAXIMUM 10.0
/**
* maximum frame depth
*/
#define FRAME_DEPTH 8
/* Forward declare internal navigation function */
static nserror browser_window__navigate_internal(
struct browser_window *bw, struct browser_fetch_parameters *params);
/**
* Close and destroy all child browser window.
*
* \param bw browser window
*/
static void browser_window_destroy_children(struct browser_window *bw)
{
int i;
if (bw->children) {
for (i = 0; i < (bw->rows * bw->cols); i++) {
browser_window_destroy_internal(&bw->children[i]);
}
free(bw->children);
bw->children = NULL;
bw->rows = 0;
bw->cols = 0;
}
}
/**
* Free the stored fetch parameters
*
* \param bw The browser window
*/
static void
browser_window__free_fetch_parameters(struct browser_fetch_parameters *params)
{
if (params->url != NULL) {
nsurl_unref(params->url);
params->url = NULL;
}
if (params->referrer != NULL) {
nsurl_unref(params->referrer);
params->referrer = NULL;
}
if (params->post_urlenc != NULL) {
free(params->post_urlenc);
params->post_urlenc = NULL;
}
if (params->post_multipart != NULL) {
fetch_multipart_data_destroy(params->post_multipart);
params->post_multipart = NULL;
}
if (params->parent_charset != NULL) {
free(params->parent_charset);
params->parent_charset = NULL;
}
}
/**
* Get position of scrollbar widget within browser window.
*
* \param bw The browser window
* \param horizontal Whether to get position of horizontal scrollbar
* \param x Updated to x-coord of top left of scrollbar widget
* \param y Updated to y-coord of top left of scrollbar widget
*/
static inline void
browser_window_get_scrollbar_pos(struct browser_window *bw,
bool horizontal,
int *x, int *y)
{
if (horizontal) {
*x = 0;
*y = bw->height - SCROLLBAR_WIDTH;
} else {
*x = bw->width - SCROLLBAR_WIDTH;
*y = 0;
}
}
/**
* Get browser window horizontal scrollbar widget length
*
* \param bw The browser window
* \return the scrollbar's length
*/
static inline int get_horz_scrollbar_len(struct browser_window *bw)
{
if (bw->scroll_y == NULL) {
return bw->width;
}
return bw->width - SCROLLBAR_WIDTH;
}
/**
* Get browser window vertical scrollbar widget length
*
* \param bw The browser window
* \return the scrollbar's length
*/
static inline int get_vert_scrollbar_len(struct browser_window *bw)
{
return bw->height;
}
/**
* Set or remove a selection.
*
* \param bw browser window with selection
* \param selection true if bw has a selection, false if removing selection
* \param read_only true iff selection is read only (e.g. can't cut it)
*/
static void
browser_window_set_selection(struct browser_window *bw,
bool selection,
bool read_only)
{
struct browser_window *top;
assert(bw != NULL);
top = browser_window_get_root(bw);
assert(top != NULL);
if (bw != top->selection.bw &&
top->selection.bw != NULL &&
top->selection.bw->current_content != NULL) {
/* clear old selection */
content_clear_selection(top->selection.bw->current_content);
}
if (selection) {
top->selection.bw = bw;
} else {
top->selection.bw = NULL;
}
top->selection.read_only = read_only;
}
/**
* Set the scroll position of a browser window.
*
* scrolls the viewport to ensure the specified rectangle of the
* content is shown.
*
* \param bw window to scroll
* \param rect The rectangle to ensure is shown.
* \return NSERROR_OK on success or apropriate error code.
*/
static nserror
browser_window_set_scroll(struct browser_window *bw, const struct rect *rect)
{
if (bw->window != NULL) {
return guit->window->set_scroll(bw->window, rect);
}
if (bw->scroll_x != NULL) {
scrollbar_set(bw->scroll_x, rect->x0, false);
}
if (bw->scroll_y != NULL) {
scrollbar_set(bw->scroll_y, rect->y0, false);
}
return NSERROR_OK;
}
/**
* Internal helper for getting the positional features
*
* \param[in] bw browser window to examine.
* \param[in] x x-coordinate of point of interest
* \param[in] y y-coordinate of point of interest
* \param[out] data Feature structure to update.
* \return NSERROR_OK or appropriate error code on faliure.
*/
static nserror
browser_window__get_contextual_content(struct browser_window *bw,
int x, int y,
struct browser_window_features *data)
{
nserror ret = NSERROR_OK;
/* Handle (i)frame scroll offset (core-managed browser windows only) */
x += scrollbar_get_offset(bw->scroll_x);
y += scrollbar_get_offset(bw->scroll_y);
if (bw->children) {
/* Browser window has children, so pass request on to
* appropriate child.
*/
struct browser_window *bwc;
int cur_child;
int children = bw->rows * bw->cols;
/* Loop through all children of bw */
for (cur_child = 0; cur_child < children; cur_child++) {
/* Set current child */
bwc = &bw->children[cur_child];
/* Skip this frame if (x, y) coord lies outside */
if ((x < bwc->x) ||
(bwc->x + bwc->width < x) ||
(y < bwc->y) ||
(bwc->y + bwc->height < y)) {
continue;
}
/* Pass request into this child */
return browser_window__get_contextual_content(bwc,
(x - bwc->x), (y - bwc->y), data);
}
/* Coordinate not contained by any frame */
} else if (bw->current_content != NULL) {
/* Pass request to content */
ret = content_get_contextual_content(bw->current_content,
x, y, data);
data->main = bw->current_content;
}
return ret;
}
/**
* implements the download operation of a window navigate
*/
static nserror
browser_window_download(struct browser_window *bw,
nsurl *url,
nsurl *nsref,
uint32_t fetch_flags,
bool fetch_is_post,
llcache_post_data *post)
{
llcache_handle *l;
struct browser_window *root;
nserror error;
root = browser_window_get_root(bw);
assert(root != NULL);
fetch_flags |= LLCACHE_RETRIEVE_FORCE_FETCH;
fetch_flags |= LLCACHE_RETRIEVE_STREAM_DATA;
error = llcache_handle_retrieve(url, fetch_flags, nsref,
fetch_is_post ? post : NULL,
NULL, NULL, &l);
if (error == NSERROR_NO_FETCH_HANDLER) {
/* no internal handler for this type, call out to frontend */
error = guit->misc->launch_url(url);
} else if (error != NSERROR_OK) {
NSLOG(netsurf, INFO, "Failed to fetch download: %d", error);
} else {
error = download_context_create(l, root->window);
if (error != NSERROR_OK) {
NSLOG(netsurf, INFO,
"Failed creating download context: %d", error);
llcache_handle_abort(l);
llcache_handle_release(l);
}
}
return error;
}
/**
* recursively check browser windows for activity
*
* \param bw browser window to start checking from.
*/
static bool browser_window_check_throbber(struct browser_window *bw)
{
int children, index;
if (bw->throbbing)
return true;
if (bw->children) {
children = bw->rows * bw->cols;
for (index = 0; index < children; index++) {
if (browser_window_check_throbber(&bw->children[index]))
return true;
}
}
if (bw->iframes) {
for (index = 0; index < bw->iframe_count; index++) {
if (browser_window_check_throbber(&bw->iframes[index]))
return true;
}
}
return false;
}
/**
* Start the busy indicator.
*
* \param bw browser window
*/
static nserror browser_window_start_throbber(struct browser_window *bw)
{
bw->throbbing = true;
while (bw->parent)
bw = bw->parent;
return guit->window->event(bw->window, GW_EVENT_START_THROBBER);
}
/**
* Stop the busy indicator.
*
* \param bw browser window
*/
static nserror browser_window_stop_throbber(struct browser_window *bw)
{
nserror res = NSERROR_OK;
bw->throbbing = false;
while (bw->parent) {
bw = bw->parent;
}
if (!browser_window_check_throbber(bw)) {
res = guit->window->event(bw->window, GW_EVENT_STOP_THROBBER);
}
return res;
}
/**
* Callback for fetchcache() for browser window favicon fetches.
*
* \param c content handle of favicon
* \param event The event to process
* \param pw a context containing the browser window
* \return NSERROR_OK on success else appropriate error code.
*/
static nserror
browser_window_favicon_callback(hlcache_handle *c,
const hlcache_event *event,
void *pw)
{
struct browser_window *bw = pw;
switch (event->type) {
case CONTENT_MSG_DONE:
if (bw->favicon.current != NULL) {
content_close(bw->favicon.current);
hlcache_handle_release(bw->favicon.current);
}
bw->favicon.current = c;
bw->favicon.loading = NULL;
/* content_get_bitmap on the hlcache_handle should give
* the favicon bitmap at this point
*/
guit->window->set_icon(bw->window, c);
break;
case CONTENT_MSG_ERROR:
/* clean up after ourselves */
if (c == bw->favicon.loading) {
bw->favicon.loading = NULL;
} else if (c == bw->favicon.current) {
bw->favicon.current = NULL;
}
hlcache_handle_release(c);
if (bw->favicon.failed == false) {
nsurl *nsref = NULL;
nsurl *nsurl;
nserror error;
bw->favicon.failed = true;
error = nsurl_create("resource:favicon.ico", &nsurl);
if (error != NSERROR_OK) {
NSLOG(netsurf, INFO,
"Unable to create default location url");
} else {
hlcache_handle_retrieve(nsurl,
HLCACHE_RETRIEVE_SNIFF_TYPE,
nsref, NULL,
browser_window_favicon_callback,
bw, NULL, CONTENT_IMAGE,
&bw->favicon.loading);
nsurl_unref(nsurl);
}
}
break;
default:
break;
}
return NSERROR_OK;
}
/**
* update the favicon associated with the browser window
*
* \param c the page content handle.
* \param bw A top level browser window.
* \param link A link context or NULL to attempt fallback scanning.
*/
static nserror
browser_window_update_favicon(hlcache_handle *c,
struct browser_window *bw,
struct content_rfc5988_link *link)
{
nsurl *nsref = NULL;
nsurl *nsurl;
nserror res;
assert(c != NULL);
assert(bw !=NULL);
if (bw->window == NULL) {
/* Not top-level browser window; not interested */
return NSERROR_OK;
}
/* already fetching the favicon - use that */
if (bw->favicon.loading != NULL) {
return NSERROR_OK;
}
bw->favicon.failed = false;
if (link == NULL) {
/* Look for "icon" */
link = content_find_rfc5988_link(c, corestring_lwc_icon);
}
if (link == NULL) {
/* Look for "shortcut icon" */
link = content_find_rfc5988_link(c, corestring_lwc_shortcut_icon);
}
if (link == NULL) {
lwc_string *scheme;
bool speculative_default = false;
bool match;
nsurl = hlcache_handle_get_url(c);
scheme = nsurl_get_component(nsurl, NSURL_SCHEME);
/* If the document was fetched over http(s), then speculate
* that there's a favicon living at /favicon.ico */
if ((lwc_string_caseless_isequal(scheme,
corestring_lwc_http,
&match) == lwc_error_ok &&
match) ||
(lwc_string_caseless_isequal(scheme,
corestring_lwc_https,
&match) == lwc_error_ok &&
match)) {
speculative_default = true;
}
lwc_string_unref(scheme);
if (speculative_default) {
/* no favicon via link, try for the default location */
res = nsurl_join(nsurl, "/favicon.ico", &nsurl);
} else {
bw->favicon.failed = true;
res = nsurl_create("resource:favicon.ico", &nsurl);
}
if (res != NSERROR_OK) {
NSLOG(netsurf, INFO,
"Unable to create default location url");
return res;
}
} else {
nsurl = nsurl_ref(link->href);
}
if (link == NULL) {
NSLOG(netsurf, INFO,
"fetching general favicon from '%s'",
nsurl_access(nsurl));
} else {
NSLOG(netsurf, INFO,
"fetching favicon rel:%s '%s'",
lwc_string_data(link->rel),
nsurl_access(nsurl));
}
res = hlcache_handle_retrieve(nsurl,
HLCACHE_RETRIEVE_SNIFF_TYPE,
nsref,
NULL,
browser_window_favicon_callback,
bw,
NULL,
CONTENT_IMAGE,
&bw->favicon.loading);
nsurl_unref(nsurl);
return res;
}
/**
* Handle meta http-equiv refresh time elapsing by loading a new page.
*
* \param p browser window to refresh with new page
*/
static void browser_window_refresh(void *p)
{
struct browser_window *bw = p;
nsurl *url;
nsurl *refresh;
hlcache_handle *parent = NULL;
enum browser_window_nav_flags flags = BW_NAVIGATE_UNVERIFIABLE;
assert(bw->current_content != NULL &&
(content_get_status(bw->current_content) ==
CONTENT_STATUS_READY ||
content_get_status(bw->current_content) ==
CONTENT_STATUS_DONE));
/* Ignore if the refresh URL has gone
* (may happen if a fetch error occurred) */
refresh = content_get_refresh_url(bw->current_content);
if (refresh == NULL)
return;
/* mark this content as invalid so it gets flushed from the cache */
content_invalidate_reuse_data(bw->current_content);
url = hlcache_handle_get_url(bw->current_content);
if ((url == NULL) || (nsurl_compare(url, refresh, NSURL_COMPLETE))) {
flags |= BW_NAVIGATE_HISTORY;
}
/* Treat an (almost) immediate refresh in a top-level browser window as
* if it were an HTTP redirect, and thus make the resulting fetch
* verifiable.
*
* See fetchcache.c for why redirected fetches should be verifiable at
* all.
*/
if (bw->refresh_interval <= 100 && bw->parent == NULL) {
flags &= ~BW_NAVIGATE_UNVERIFIABLE;
} else {
parent = bw->current_content;
}
browser_window_navigate(bw,
refresh,
url,
flags,
NULL,
NULL,
parent);
}
/**
* Transfer the loading_content to a new download window.
*/
static void
browser_window_convert_to_download(struct browser_window *bw,
llcache_handle *stream)
{
struct browser_window *root = browser_window_get_root(bw);
nserror error;
assert(root != NULL);
error = download_context_create(stream, root->window);
if (error != NSERROR_OK) {
llcache_handle_abort(stream);
llcache_handle_release(stream);
}
/* remove content from browser window */
hlcache_handle_release(bw->loading_content);
bw->loading_content = NULL;
browser_window_stop_throbber(bw);
}
/**
* scroll to a fragment if present
*
* \param bw browser window
* \return true if the scroll was sucessful
*/
static bool frag_scroll(struct browser_window *bw)
{
struct rect rect;
if (bw->frag_id == NULL) {
return false;
}
if (!html_get_id_offset(bw->current_content,
bw->frag_id,
&rect.x0,
&rect.y0)) {
return false;
}
rect.x1 = rect.x0;
rect.y1 = rect.y0;
if (browser_window_set_scroll(bw, &rect) == NSERROR_OK) {
if (bw->current_content != NULL &&
bw->history != NULL &&
bw->history->current != NULL) {
browser_window_history_update(bw, bw->current_content);
}
return true;
}
return false;
}
/**
* Redraw browser window, set extent to content, and update title.
*
* \param bw browser_window
* \param scroll_to_top move view to top of page
*/
static void browser_window_update(struct browser_window *bw, bool scroll_to_top)
{
static const struct rect zrect = {
.x0 = 0,
.y0 = 0,
.x1 = 0,
.y1 = 0
};
if (bw->current_content == NULL) {
return;
}
switch (bw->browser_window_type) {
case BROWSER_WINDOW_NORMAL:
/* Root browser window, constituting a front end window/tab */
guit->window->set_title(bw->window,
content_get_title(bw->current_content));
browser_window_update_extent(bw);
/* if frag_id exists, then try to scroll to it */
/** @todo don't do this if the user has scrolled */
if (!frag_scroll(bw)) {
if (scroll_to_top) {
browser_window_set_scroll(bw, &zrect);
}
}
guit->window->invalidate(bw->window, NULL);
break;
case BROWSER_WINDOW_IFRAME:
/* Internal iframe browser window */
assert(bw->parent != NULL);
assert(bw->parent->current_content != NULL);
browser_window_update_extent(bw);
if (scroll_to_top) {
browser_window_set_scroll(bw, &zrect);
}
/* if frag_id exists, then try to scroll to it */
/** @todo don't do this if the user has scrolled */
frag_scroll(bw);
browser_window_invalidate_iframe(bw);
break;
case BROWSER_WINDOW_FRAME:
{
struct rect rect;
browser_window_update_extent(bw);
if (scroll_to_top) {
browser_window_set_scroll(bw, &zrect);
}
/* if frag_id exists, then try to scroll to it */
/** @todo don't do this if the user has scrolled */
frag_scroll(bw);
rect.x0 = scrollbar_get_offset(bw->scroll_x);
rect.y0 = scrollbar_get_offset(bw->scroll_y);
rect.x1 = rect.x0 + bw->width;
rect.y1 = rect.y0 + bw->height;
browser_window_invalidate_rect(bw, &rect);
}
break;
default:
case BROWSER_WINDOW_FRAMESET:
/* Nothing to do */
break;
}
}
/**
* handle message for content ready on browser window
*/
static nserror browser_window_content_ready(struct browser_window *bw)
{
int width, height;
nserror res = NSERROR_OK;
/* close and release the current window content */
if (bw->current_content != NULL) {
content_close(bw->current_content);
hlcache_handle_release(bw->current_content);
}
bw->current_content = bw->loading_content;
bw->loading_content = NULL;
if (!bw->internal_nav) {
/* Transfer the fetch parameters */
browser_window__free_fetch_parameters(&bw->current_parameters);
bw->current_parameters = bw->loading_parameters;
memset(&bw->loading_parameters, 0, sizeof(bw->loading_parameters));
/* Transfer the certificate chain */
cert_chain_free(bw->current_cert_chain);
bw->current_cert_chain = bw->loading_cert_chain;
bw->loading_cert_chain = NULL;
}
/* Format the new content to the correct dimensions */
browser_window_get_dimensions(bw, &width, &height);
width /= bw->scale;
height /= bw->scale;
content_reformat(bw->current_content, false, width, height);
/* history */
if (bw->history_add && bw->history && !bw->internal_nav) {
nsurl *url = hlcache_handle_get_url(bw->current_content);
if (urldb_add_url(url)) {
urldb_set_url_title(url, content_get_title(bw->current_content));
urldb_update_url_visit_data(url);
urldb_set_url_content_type(url,
content_get_type(bw->current_content));
/* This is safe as we've just added the URL */
global_history_add(urldb_get_url(url));
}
/**
* \todo Urldb / Thumbnails / Local history brokenness
*
* We add to local history after calling urldb_add_url rather
* than in the block above. If urldb_add_url fails (as it
* will for urls like "about:about", "about:config" etc),
* there would be no local history node, and later calls to
* history_update will either explode or overwrite the node
* for the previous URL.
*
* We call it after, rather than before urldb_add_url because
* history_add calls bitmap render, which tries to register
* the thumbnail with urldb. That thumbnail registration
* fails if the url doesn't exist in urldb already, and only
* urldb-registered thumbnails get freed. So if we called
* history_add before urldb_add_url we would leak thumbnails
* for all newly visited URLs. With the history_add call
* after, we only leak the thumbnails when urldb does not add
* the URL.
*
* Also, since browser_window_history_add can create a
* thumbnail (content_redraw), we need to do it after
* content_reformat.
*/
browser_window_history_add(bw, bw->current_content, bw->frag_id);
}
browser_window_remove_caret(bw, false);
if (bw->window != NULL) {
guit->window->event(bw->window, GW_EVENT_NEW_CONTENT);
browser_window_refresh_url_bar(bw);
}
/* new content; set scroll_to_top */
browser_window_update(bw, true);
content_open(bw->current_content, bw, 0, 0);
browser_window_set_status(bw, content_get_status_message(bw->current_content));
/* frames */
res = browser_window_create_frameset(bw);
/* iframes */
res = browser_window_create_iframes(bw);
/* Indicate page status may have changed */
if (res == NSERROR_OK) {
struct browser_window *root = browser_window_get_root(bw);
res = guit->window->event(root->window, GW_EVENT_PAGE_INFO_CHANGE);
}
return res;
}
/**
* handle message for content done on browser window
*/
static nserror
browser_window_content_done(struct browser_window *bw)
{
float sx, sy;
struct rect rect;
int scrollx;
int scrolly;
if (bw->window == NULL) {
/* Updated browser window's scrollbars. */
/**
* \todo update browser window scrollbars before CONTENT_MSG_DONE
*/
browser_window_reformat(bw, true, bw->width, bw->height);
browser_window_handle_scrollbars(bw);
}
browser_window_update(bw, false);
browser_window_set_status(bw, content_get_status_message(bw->current_content));
browser_window_stop_throbber(bw);
browser_window_update_favicon(bw->current_content, bw, NULL);
if (browser_window_history_get_scroll(bw, &sx, &sy) == NSERROR_OK) {
scrollx = (int)((float)content_get_width(bw->current_content) * sx);
scrolly = (int)((float)content_get_height(bw->current_content) * sy);
rect.x0 = rect.x1 = scrollx;
rect.y0 = rect.y1 = scrolly;
if (browser_window_set_scroll(bw, &rect) != NSERROR_OK) {
NSLOG(netsurf, WARNING,
"Unable to set browser scroll offsets to %d by %d",
scrollx, scrolly);
}
}
if (!bw->internal_nav) {
browser_window_history_update(bw, bw->current_content);
hotlist_update_url(hlcache_handle_get_url(bw->current_content));
}
if (bw->refresh_interval != -1) {
guit->misc->schedule(bw->refresh_interval * 10,
browser_window_refresh, bw);
}
return NSERROR_OK;
}
/**
* Handle query responses from SSL requests
*/
static nserror
browser_window__handle_ssl_query_response(bool proceed, void *pw)
{
struct browser_window *bw = (struct browser_window *)pw;
/* If we're in the process of loading, stop the load */
if (bw->loading_content != NULL) {
/* We had a loading content (maybe auth page?) */
browser_window_stop(bw);
browser_window_remove_caret(bw, false);
browser_window_destroy_children(bw);
browser_window_destroy_iframes(bw);
}
if (!proceed) {
/* We're processing a "back to safety", do a rough-and-ready
* nav to the old 'current' parameters, with any post data
* stripped away
*/
return browser_window__reload_current_parameters(bw);
}
/* We're processing a "proceed" attempt from the form */
/* First, we permit the SSL */
urldb_set_cert_permissions(bw->loading_parameters.url, true);
/* And then we navigate to the original loading parameters */
bw->internal_nav = false;
return browser_window__navigate_internal(bw, &bw->loading_parameters);
}
/**
* Unpack a "username:password" to components.
*
* \param[in] userpass The input string to split.
* \param[in] username_out Returns username on success. Owned by caller.
* \param[out] password_out Returns password on success. Owned by caller.
* \return NSERROR_OK, or appropriate error code.
*/
static nserror
browser_window__unpack_userpass(const char *userpass,
char **username_out,
char **password_out)
{
const char *tmp;
char *username;
char *password;
size_t len;
if (userpass == NULL) {
username = malloc(1);
password = malloc(1);
if (username == NULL || password == NULL) {
free(username);
free(password);
return NSERROR_NOMEM;
}
username[0] = '\0';
password[0] = '\0';
*username_out = username;
*password_out = password;
return NSERROR_OK;
}
tmp = strchr(userpass, ':');
if (tmp == NULL) {
return NSERROR_BAD_PARAMETER;
} else {
size_t len2;
len = tmp - userpass;
len2 = strlen(++tmp);
username = malloc(len + 1);
password = malloc(len2 + 1);
if (username == NULL || password == NULL) {
free(username);
free(password);
return NSERROR_NOMEM;
}
memcpy(username, userpass, len);
username[len] = '\0';
memcpy(password, tmp, len2 + 1);
}
*username_out = username;
*password_out = password;
return NSERROR_OK;
}
/**
* Build a "username:password" from components.
*
* \param[in] username The username component.
* \param[in] password The password component.
* \param[out] userpass_out Returns combined string on success.
* Owned by caller.
* \return NSERROR_OK, or appropriate error code.
*/
static nserror
browser_window__build_userpass(const char *username,
const char *password,
char **userpass_out)
{
char *userpass;
size_t len;
len = strlen(username) + 1 + strlen(password) + 1;
userpass = malloc(len);
if (userpass == NULL) {
return NSERROR_NOMEM;
}
snprintf(userpass, len, "%s:%s", username, password);
*userpass_out = userpass;
return NSERROR_OK;
}
/**
* Handle a response from the UI when prompted for credentials
*/
static nserror
browser_window__handle_userpass_response(nsurl *url,
const char *realm,
const char *username,
const char *password,
void *pw)
{
struct browser_window *bw = (struct browser_window *)pw;
char *userpass;
nserror err;
err = browser_window__build_userpass(username, password, &userpass);
if (err != NSERROR_OK) {
return err;
}
urldb_set_auth_details(url, realm, userpass);
free(userpass);
/**
* \todo QUERY - Eventually this should fill out the form *NOT* nav
* to the original location
*/
/* Finally navigate to the original loading parameters */
if (bw->loading_content != NULL) {
/* We had a loading content (maybe auth page?) */
browser_window_stop(bw);
browser_window_remove_caret(bw, false);
browser_window_destroy_children(bw);
browser_window_destroy_iframes(bw);
}
bw->internal_nav = false;
return browser_window__navigate_internal(bw, &bw->loading_parameters);
}
/**
* Handle login request (BAD_AUTH) during fetch
*
*/
static nserror
browser_window__handle_login(struct browser_window *bw,
const char *realm,
nsurl *url) {
char *username = NULL, *password = NULL;
nserror err = NSERROR_OK;
struct browser_fetch_parameters params;
memset(&params, 0, sizeof(params));
/* Step one, retrieve what we have */
err = browser_window__unpack_userpass(
urldb_get_auth_details(url, realm),
&username, &password);
if (err != NSERROR_OK) {
goto out;
}
/* Step two, construct our fetch parameters */
params.url = nsurl_ref(corestring_nsurl_about_query_auth);
params.referrer = nsurl_ref(url);
params.flags = BW_NAVIGATE_HISTORY | BW_NAVIGATE_NO_TERMINAL_HISTORY_UPDATE | BW_NAVIGATE_INTERNAL;
err = fetch_multipart_data_new_kv(&params.post_multipart,
"siteurl",
nsurl_access(url));
if (err != NSERROR_OK) {
goto out;
}
err = fetch_multipart_data_new_kv(&params.post_multipart,
"realm",
realm);
if (err != NSERROR_OK) {
goto out;
}
err = fetch_multipart_data_new_kv(&params.post_multipart,
"username",
username);
if (err != NSERROR_OK) {
goto out;
}
err = fetch_multipart_data_new_kv(&params.post_multipart,
"password",
password);
if (err != NSERROR_OK) {
goto out;
}
/* Now we issue the fetch */
bw->internal_nav = true;
err = browser_window__navigate_internal(bw, &params);
if (err != NSERROR_OK) {
goto out;
}
err = guit->misc->login(url, realm, username, password,
browser_window__handle_userpass_response, bw);
if (err == NSERROR_NOT_IMPLEMENTED) {
err = NSERROR_OK;
}
out:
if (username != NULL) {
free(username);
}
if (password != NULL) {
free(password);
}
browser_window__free_fetch_parameters(&params);
return err;
}
/**
* Handle a certificate verification request (BAD_CERTS) during a fetch
*/
static nserror
browser_window__handle_bad_certs(struct browser_window *bw,
nsurl *url)
{
struct browser_fetch_parameters params;
nserror err;
/* Initially we don't know WHY the SSL cert was bad */
const char *reason = messages_get_sslcode(SSL_CERT_ERR_UNKNOWN);
size_t depth;
nsurl *chainurl = NULL;
memset(&params, 0, sizeof(params));
params.url = nsurl_ref(corestring_nsurl_about_query_ssl);
params.referrer = nsurl_ref(url);
params.flags = BW_NAVIGATE_HISTORY | BW_NAVIGATE_NO_TERMINAL_HISTORY_UPDATE | BW_NAVIGATE_INTERNAL;
err = fetch_multipart_data_new_kv(&params.post_multipart,
"siteurl",
nsurl_access(url));
if (err != NSERROR_OK) {
goto out;
}
if (bw->loading_cert_chain != NULL) {
for (depth = 0; depth < bw->loading_cert_chain->depth; ++depth) {
size_t idx = bw->loading_cert_chain->depth - (depth + 1);
ssl_cert_err err = bw->loading_cert_chain->certs[idx].err;
if (err != SSL_CERT_ERR_OK) {
reason = messages_get_sslcode(err);
break;
}
}
err = cert_chain_to_query(bw->loading_cert_chain, &chainurl);
if (err != NSERROR_OK) {
goto out;
}
err = fetch_multipart_data_new_kv(&params.post_multipart,
"chainurl",
nsurl_access(chainurl));
if (err != NSERROR_OK) {
goto out;
}
}
err = fetch_multipart_data_new_kv(&params.post_multipart,
"reason",
reason);
if (err != NSERROR_OK) {
goto out;
}
/* Now we issue the fetch */
bw->internal_nav = true;
err = browser_window__navigate_internal(bw, &params);
if (err != NSERROR_OK) {
goto out;
}
out:
browser_window__free_fetch_parameters(&params);
if (chainurl != NULL)
nsurl_unref(chainurl);
return err;
}
/**
* Handle a timeout during a fetch
*/
static nserror
browser_window__handle_timeout(struct browser_window *bw, nsurl *url)
{
struct browser_fetch_parameters params;
nserror err;
memset(&params, 0, sizeof(params));
params.url = nsurl_ref(corestring_nsurl_about_query_timeout);
params.referrer = nsurl_ref(url);
params.flags = BW_NAVIGATE_HISTORY | BW_NAVIGATE_NO_TERMINAL_HISTORY_UPDATE | BW_NAVIGATE_INTERNAL;
err = fetch_multipart_data_new_kv(&params.post_multipart,
"siteurl",
nsurl_access(url));
if (err != NSERROR_OK) {
goto out;
}
/* Now we issue the fetch */
bw->internal_nav = true;
err = browser_window__navigate_internal(bw, &params);
if (err != NSERROR_OK) {
goto out;
}
out:
browser_window__free_fetch_parameters(&params);
return err;
}
/**
* Handle non specific errors during a fetch
*/
static nserror
browser_window__handle_fetcherror(struct browser_window *bw,
const char *reason,
nsurl *url)
{
struct browser_fetch_parameters params;
nserror err;
memset(&params, 0, sizeof(params));
params.url = nsurl_ref(corestring_nsurl_about_query_fetcherror);
params.referrer = nsurl_ref(url);
params.flags = BW_NAVIGATE_HISTORY | BW_NAVIGATE_NO_TERMINAL_HISTORY_UPDATE | BW_NAVIGATE_INTERNAL;
err = fetch_multipart_data_new_kv(&params.post_multipart,
"siteurl",
nsurl_access(url));
if (err != NSERROR_OK) {
goto out;
}
err = fetch_multipart_data_new_kv(&params.post_multipart,
"reason",
reason);
if (err != NSERROR_OK) {
goto out;
}
/* Now we issue the fetch */
bw->internal_nav = true;
err = browser_window__navigate_internal(bw, &params);
if (err != NSERROR_OK) {
goto out;
}
out:
browser_window__free_fetch_parameters(&params);
return err;
}
/**
* Handle errors during content fetch
*/
static nserror
browser_window__handle_error(struct browser_window *bw,
hlcache_handle *c,
const hlcache_event *event)
{
const char *message = event->data.errordata.errormsg;
nserror code = event->data.errordata.errorcode;
nserror res;
nsurl *url = hlcache_handle_get_url(c);
/* Unexpected OK? */
assert(code != NSERROR_OK);
if (message == NULL) {
message = messages_get_errorcode(code);
} else {
message = messages_get(message);
}
if (c == bw->loading_content) {
bw->loading_content = NULL;
} else if (c == bw->current_content) {
bw->current_content = NULL;
browser_window_remove_caret(bw, false);
}
hlcache_handle_release(c);
switch (code) {
case NSERROR_BAD_AUTH:
res = browser_window__handle_login(bw, message, url);
break;
case NSERROR_BAD_CERTS:
res = browser_window__handle_bad_certs(bw, url);
break;
case NSERROR_TIMEOUT:
res = browser_window__handle_timeout(bw, url);
break;
default:
res = browser_window__handle_fetcherror(bw, message, url);
break;
}
return res;
}
/**
* Update URL bar for a given browser window to given URL
*
* \param bw Browser window to update URL bar for.
* \param url URL for content displayed by bw including any fragment.
*/
static inline nserror
browser_window_refresh_url_bar_internal(struct browser_window *bw, nsurl *url)
{
assert(bw);
assert(url);
if ((bw->parent != NULL) || (bw->window == NULL)) {
/* Not root window or no gui window so do not set a URL */
return NSERROR_OK;
}
return guit->window->set_url(bw->window, url);
}
/**
* Browser window content event callback handler.
*/
static nserror
browser_window_callback(hlcache_handle *c, const hlcache_event *event, void *pw)
{
struct browser_window *bw = pw;
nserror res = NSERROR_OK;
switch (event->type) {
case CONTENT_MSG_SSL_CERTS:
/* SSL certificate information has arrived, store it */
cert_chain_free(bw->loading_cert_chain);
cert_chain_dup(event->data.chain, &bw->loading_cert_chain);
break;
case CONTENT_MSG_LOG:
browser_window_console_log(bw,
event->data.log.src,
event->data.log.msg,
event->data.log.msglen,
event->data.log.flags);
break;
case CONTENT_MSG_DOWNLOAD:
assert(bw->loading_content == c);
browser_window_convert_to_download(bw, event->data.download);
if (bw->current_content != NULL) {
browser_window_refresh_url_bar(bw);
}
break;
case CONTENT_MSG_LOADING:
assert(bw->loading_content == c);
#ifdef WITH_THEME_INSTALL
if (content_get_type(c) == CONTENT_THEME) {
theme_install_start(c);
bw->loading_content = NULL;
browser_window_stop_throbber(bw);
} else
#endif
{
bw->refresh_interval = -1;
browser_window_set_status(bw,
content_get_status_message(c));
}
break;
case CONTENT_MSG_READY:
assert(bw->loading_content == c);
res = browser_window_content_ready(bw);
break;
case CONTENT_MSG_DONE:
assert(bw->current_content == c);
res = browser_window_content_done(bw);
break;
case CONTENT_MSG_ERROR:
res = browser_window__handle_error(bw, c, event);
break;
case CONTENT_MSG_REDIRECT:
if (urldb_add_url(event->data.redirect.from)) {
urldb_update_url_visit_data(event->data.redirect.from);
}
browser_window_refresh_url_bar_internal(bw, event->data.redirect.to);
break;
case CONTENT_MSG_STATUS:
if (event->data.explicit_status_text == NULL) {
/* Object content's status text updated */
const char *status = NULL;
if (bw->loading_content != NULL) {
/* Give preference to any loading content */
status = content_get_status_message(
bw->loading_content);
}
if (status == NULL) {
status = content_get_status_message(c);
}
if (status != NULL) {
browser_window_set_status(bw, status);
}
} else {
/* Object content wants to set explicit message */
browser_window_set_status(bw,
event->data.explicit_status_text);
}
break;
case CONTENT_MSG_REFORMAT:
if (c == bw->current_content) {
/* recompute frameset */
browser_window_recalculate_frameset(bw);
/* recompute iframe positions, sizes and scrollbars */
browser_window_recalculate_iframes(bw);
}
/* Hide any caret, but don't remove it */
browser_window_remove_caret(bw, true);
if (!(event->data.background)) {
/* Reformatted content should be redrawn */
browser_window_update(bw, false);
}
break;
case CONTENT_MSG_REDRAW:
{
struct rect rect = {
.x0 = event->data.redraw.x,
.y0 = event->data.redraw.y,
.x1 = event->data.redraw.x + event->data.redraw.width,
.y1 = event->data.redraw.y + event->data.redraw.height
};
browser_window_invalidate_rect(bw, &rect);
}
break;
case CONTENT_MSG_REFRESH:
bw->refresh_interval = event->data.delay * 100;
break;
case CONTENT_MSG_LINK: /* content has an rfc5988 link element */
{
bool match;
/* Handle "icon" and "shortcut icon" */
if ((lwc_string_caseless_isequal(
event->data.rfc5988_link->rel,
corestring_lwc_icon,
&match) == lwc_error_ok && match) ||
(lwc_string_caseless_isequal(
event->data.rfc5988_link->rel,
corestring_lwc_shortcut_icon,
&match) == lwc_error_ok && match)) {
/* it's a favicon perhaps start a fetch for it */
browser_window_update_favicon(c, bw,
event->data.rfc5988_link);
}
}
break;
case CONTENT_MSG_GETTHREAD:
{
/* only the content object created by the browser
* window requires a new javascript thread object
*/
jsthread *thread;
assert(bw->loading_content == c);
if (js_newthread(bw->jsheap,
bw,
hlcache_handle_get_content(c),
&thread) == NSERROR_OK) {
/* The content which is requesting the thread
* is required to keep hold of it and
* to destroy it when it is finished with it.
*/
*(event->data.jsthread) = thread;
}
}
break;
case CONTENT_MSG_GETDIMS:
{
int width;
int height;
browser_window_get_dimensions(bw, &width, &height);
*(event->data.getdims.viewport_width) = width / bw->scale;
*(event->data.getdims.viewport_height) = height / bw->scale;
break;
}
case CONTENT_MSG_SCROLL:
{
struct rect rect = {
.x0 = event->data.scroll.x0,
.y0 = event->data.scroll.y0,
};
/* Content wants to be scrolled */
if (bw->current_content != c) {
break;
}
if (event->data.scroll.area) {
rect.x1 = event->data.scroll.x1;
rect.y1 = event->data.scroll.y1;
} else {
rect.x1 = event->data.scroll.x0;
rect.y1 = event->data.scroll.y0;
}
browser_window_set_scroll(bw, &rect);
break;
}
case CONTENT_MSG_DRAGSAVE:
{
/* Content wants drag save of a content */
struct browser_window *root = browser_window_get_root(bw);
hlcache_handle *save = event->data.dragsave.content;
if (save == NULL) {
save = c;
}
switch(event->data.dragsave.type) {
case CONTENT_SAVE_ORIG:
guit->window->drag_save_object(root->window,
save,
GUI_SAVE_OBJECT_ORIG);
break;
case CONTENT_SAVE_NATIVE:
guit->window->drag_save_object(root->window,
save,
GUI_SAVE_OBJECT_NATIVE);
break;
case CONTENT_SAVE_COMPLETE:
guit->window->drag_save_object(root->window,
save,
GUI_SAVE_COMPLETE);
break;
case CONTENT_SAVE_SOURCE:
guit->window->drag_save_object(root->window,
save,
GUI_SAVE_SOURCE);
break;
}
}
break;
case CONTENT_MSG_SAVELINK:
{
/* Content wants a link to be saved */
struct browser_window *root = browser_window_get_root(bw);
guit->window->save_link(root->window,
event->data.savelink.url,
event->data.savelink.title);
}
break;
case CONTENT_MSG_POINTER:
/* Content wants to have specific mouse pointer */
browser_window_set_pointer(bw, event->data.pointer);
break;
case CONTENT_MSG_DRAG:
{
browser_drag_type bdt = DRAGGING_NONE;
switch (event->data.drag.type) {
case CONTENT_DRAG_NONE:
bdt = DRAGGING_NONE;
break;
case CONTENT_DRAG_SCROLL:
bdt = DRAGGING_CONTENT_SCROLLBAR;
break;
case CONTENT_DRAG_SELECTION:
bdt = DRAGGING_SELECTION;
break;
}
browser_window_set_drag_type(bw, bdt, event->data.drag.rect);
}
break;
case CONTENT_MSG_CARET:
switch (event->data.caret.type) {
case CONTENT_CARET_REMOVE:
browser_window_remove_caret(bw, false);
break;
case CONTENT_CARET_HIDE:
browser_window_remove_caret(bw, true);
break;
case CONTENT_CARET_SET_POS:
browser_window_place_caret(bw,
event->data.caret.pos.x,
event->data.caret.pos.y,
event->data.caret.pos.height,
event->data.caret.pos.clip);
break;
}
break;
case CONTENT_MSG_SELECTION:
browser_window_set_selection(bw,
event->data.selection.selection,
event->data.selection.read_only);
break;
case CONTENT_MSG_SELECTMENU:
if (event->data.select_menu.gadget->type == GADGET_SELECT) {
struct browser_window *root =
browser_window_get_root(bw);
guit->window->create_form_select_menu(root->window,
event->data.select_menu.gadget);
}
break;
case CONTENT_MSG_GADGETCLICK:
if (event->data.gadget_click.gadget->type == GADGET_FILE) {
struct browser_window *root =
browser_window_get_root(bw);
guit->window->file_gadget_open(root->window, c,
event->data.gadget_click.gadget);
}
break;
case CONTENT_MSG_TEXTSEARCH:
switch (event->data.textsearch.type) {
case CONTENT_TEXTSEARCH_FIND:
guit->search->hourglass(event->data.textsearch.state,
event->data.textsearch.ctx);
break;
case CONTENT_TEXTSEARCH_MATCH:
guit->search->status(event->data.textsearch.state,
event->data.textsearch.ctx);
break;
case CONTENT_TEXTSEARCH_BACK:
guit->search->back_state(event->data.textsearch.state,
event->data.textsearch.ctx);
break;
case CONTENT_TEXTSEARCH_FORWARD:
guit->search->forward_state(event->data.textsearch.state,
event->data.textsearch.ctx);
break;
case CONTENT_TEXTSEARCH_RECENT:
guit->search->add_recent(event->data.textsearch.string,
event->data.textsearch.ctx);
break;
}
break;
default:
break;
}
return res;
}
/**
* internal scheduled reformat callback.
*
* scheduled reformat callback to allow reformats from unthreaded context.
*
* \param vbw The browser window to be reformatted
*/
static void scheduled_reformat(void *vbw)
{
struct browser_window *bw = vbw;
int width;
int height;
nserror res;
res = guit->window->get_dimensions(bw->window, &width, &height);
if (res == NSERROR_OK) {
browser_window_reformat(bw, false, width, height);
}
}
/* exported interface documented in desktop/browser_private.h */
nserror browser_window_destroy_internal(struct browser_window *bw)
{
assert(bw);
browser_window_destroy_children(bw);
browser_window_destroy_iframes(bw);
/* Destroy scrollbars */
if (bw->scroll_x != NULL) {
scrollbar_destroy(bw->scroll_x);
}
if (bw->scroll_y != NULL) {
scrollbar_destroy(bw->scroll_y);
}
/* clear any pending callbacks */
guit->misc->schedule(-1, browser_window_refresh, bw);
NSLOG(netsurf, INFO,
"Clearing reformat schedule for browser window %p", bw);
guit->misc->schedule(-1, scheduled_reformat, bw);
/* If this brower window is not the root window, and has focus, unset
* the root browser window's focus pointer. */
if (!bw->window) {
struct browser_window *top = browser_window_get_root(bw);
if (top->focus == bw)
top->focus = top;
if (top->selection.bw == bw) {
browser_window_set_selection(top, false, false);
}
}
/* Destruction order is important: we must ensure that the frontend
* destroys any window(s) associated with this browser window before
* we attempt any destructive cleanup.
*/
if (bw->window) {
/* Only the root window has a GUI window */
guit->window->destroy(bw->window);
}
if (bw->loading_content != NULL) {
hlcache_handle_abort(bw->loading_content);
hlcache_handle_release(bw->loading_content);
bw->loading_content = NULL;
}
if (bw->current_content != NULL) {
content_close(bw->current_content);
hlcache_handle_release(bw->current_content);
bw->current_content = NULL;
}
if (bw->favicon.loading != NULL) {
hlcache_handle_abort(bw->favicon.loading);
hlcache_handle_release(bw->favicon.loading);
bw->favicon.loading = NULL;
}
if (bw->favicon.current != NULL) {
content_close(bw->favicon.current);
hlcache_handle_release(bw->favicon.current);
bw->favicon.current = NULL;
}
if (bw->jsheap != NULL) {
js_destroyheap(bw->jsheap);
bw->jsheap = NULL;
}
/* These simply free memory, so are safe here */
if (bw->frag_id != NULL) {
lwc_string_unref(bw->frag_id);
}
browser_window_history_destroy(bw);
cert_chain_free(bw->current_cert_chain);
cert_chain_free(bw->loading_cert_chain);
bw->current_cert_chain = NULL;
bw->loading_cert_chain = NULL;
free(bw->name);
free(bw->status.text);
bw->status.text = NULL;
browser_window__free_fetch_parameters(&bw->current_parameters);
browser_window__free_fetch_parameters(&bw->loading_parameters);
NSLOG(netsurf, INFO, "Status text cache match:miss %d:%d",
bw->status.match, bw->status.miss);
return NSERROR_OK;
}
/**
* Set browser window scale.
*
* \param bw Browser window.
* \param absolute scale value.
* \return NSERROR_OK on success else error code
*/
static nserror
browser_window_set_scale_internal(struct browser_window *bw, float scale)
{
int i;
nserror res = NSERROR_OK;
/* do not apply tiny changes in scale */
if (fabs(bw->scale - scale) < 0.0001)
return res;
bw->scale = scale;
if (bw->current_content != NULL) {
if (content_can_reformat(bw->current_content) == false) {
browser_window_update(bw, false);
} else {
res = browser_window_schedule_reformat(bw);
}
}
/* scale frames */
for (i = 0; i < (bw->cols * bw->rows); i++) {
res = browser_window_set_scale_internal(&bw->children[i], scale);
}
/* scale iframes */
for (i = 0; i < bw->iframe_count; i++) {
res = browser_window_set_scale_internal(&bw->iframes[i], scale);
}
return res;
}
/**
* Find browser window.
*
* \param bw Browser window.
* \param target Name of target.
* \param depth Depth to scan.
* \param page The browser window page.
* \param rdepth The rdepth.
* \param bw_target the output browser window.
*/
static void
browser_window_find_target_internal(struct browser_window *bw,
const char *target,
int depth,
struct browser_window *page,
int *rdepth,
struct browser_window **bw_target)
{
int i;
if ((bw->name) && (!strcasecmp(bw->name, target))) {
if ((bw == page) || (depth > *rdepth)) {
*rdepth = depth;
*bw_target = bw;
}
}
if ((!bw->children) && (!bw->iframes))
return;
depth++;
if (bw->children != NULL) {
for (i = 0; i < (bw->cols * bw->rows); i++) {
if ((bw->children[i].name) &&
(!strcasecmp(bw->children[i].name,
target))) {
if ((page == &bw->children[i]) ||
(depth > *rdepth)) {
*rdepth = depth;
*bw_target = &bw->children[i];
}
}
if (bw->children[i].children)
browser_window_find_target_internal(
&bw->children[i],
target, depth, page,
rdepth, bw_target);
}
}
if (bw->iframes != NULL) {
for (i = 0; i < bw->iframe_count; i++) {
browser_window_find_target_internal(&bw->iframes[i],
target,
depth,
page,
rdepth,
bw_target);
}
}
}
/**
* Handles the end of a drag operation in a browser window.
*
* \param bw browser window
* \param mouse state of mouse buttons and modifier keys
* \param x coordinate of mouse
* \param y coordinate of mouse
*
* \todo Remove this function, once these things are associated with content,
* rather than bw.
*/
static void
browser_window_mouse_drag_end(struct browser_window *bw,
browser_mouse_state mouse,
int x, int y)
{
int scr_x, scr_y;
switch (bw->drag.type) {
case DRAGGING_SELECTION:
case DRAGGING_OTHER:
case DRAGGING_CONTENT_SCROLLBAR:
/* Drag handled by content handler */
break;
case DRAGGING_SCR_X:
browser_window_get_scrollbar_pos(bw, true, &scr_x, &scr_y);
scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x);
scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y);
scrollbar_mouse_drag_end(bw->scroll_x, mouse, scr_x, scr_y);
bw->drag.type = DRAGGING_NONE;
break;
case DRAGGING_SCR_Y:
browser_window_get_scrollbar_pos(bw, false, &scr_x, &scr_y);
scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x);
scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y);
scrollbar_mouse_drag_end(bw->scroll_y, mouse, scr_x, scr_y);
bw->drag.type = DRAGGING_NONE;
break;
default:
browser_window_set_drag_type(bw, DRAGGING_NONE, NULL);
break;
}
}
/**
* Process mouse click event
*
* \param bw The browsing context receiving the event
* \param mouse The mouse event state
* \param x The scaled x co-ordinate of the event
* \param y The scaled y co-ordinate of the event
*/
static void
browser_window_mouse_click_internal(struct browser_window *bw,
browser_mouse_state mouse,
int x, int y)
{
hlcache_handle *c = bw->current_content;
const char *status = NULL;
browser_pointer_shape pointer = BROWSER_POINTER_DEFAULT;
if (bw->children) {
/* Browser window has children (frames) */
struct browser_window *child;
int cur_child;
int children = bw->rows * bw->cols;
for (cur_child = 0; cur_child < children; cur_child++) {
child = &bw->children[cur_child];
if ((x < child->x) ||
(y < child->y) ||
(child->x + child->width < x) ||
(child->y + child->height < y)) {
/* Click not in this child */
continue;
}
/* It's this child that contains the click; pass it
* on to child. */
browser_window_mouse_click_internal(
child,
mouse,
x - child->x + scrollbar_get_offset(child->scroll_x),
y - child->y + scrollbar_get_offset(child->scroll_y));
/* Mouse action was for this child, we're done */
return;
}
return;
}
if (!c)
return;
if (bw->scroll_x != NULL) {
int scr_x, scr_y;
browser_window_get_scrollbar_pos(bw, true, &scr_x, &scr_y);
scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x);
scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y);
if (scr_x > 0 && scr_x < get_horz_scrollbar_len(bw) &&
scr_y > 0 && scr_y < SCROLLBAR_WIDTH) {
status = scrollbar_mouse_status_to_message(
scrollbar_mouse_action(
bw->scroll_x, mouse,
scr_x, scr_y));
pointer = BROWSER_POINTER_DEFAULT;
if (status != NULL)
browser_window_set_status(bw, status);
browser_window_set_pointer(bw, pointer);
return;
}
}
if (bw->scroll_y != NULL) {
int scr_x, scr_y;
browser_window_get_scrollbar_pos(bw, false, &scr_x, &scr_y);
scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x);
scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y);
if (scr_y > 0 && scr_y < get_vert_scrollbar_len(bw) &&
scr_x > 0 && scr_x < SCROLLBAR_WIDTH) {
status = scrollbar_mouse_status_to_message(
scrollbar_mouse_action(
bw->scroll_y,
mouse,
scr_x,
scr_y));
pointer = BROWSER_POINTER_DEFAULT;
if (status != NULL) {
browser_window_set_status(bw, status);
}
browser_window_set_pointer(bw, pointer);
return;
}
}
switch (content_get_type(c)) {
case CONTENT_HTML:
case CONTENT_TEXTPLAIN:
{
/* Give bw focus */
struct browser_window *root_bw = browser_window_get_root(bw);
if (bw != root_bw->focus) {
browser_window_remove_caret(bw, false);
browser_window_set_selection(bw, false, true);
root_bw->focus = bw;
}
/* Pass mouse action to content */
content_mouse_action(c, bw, mouse, x, y);
}
break;
default:
if (mouse & BROWSER_MOUSE_MOD_2) {
if (mouse & BROWSER_MOUSE_DRAG_2) {
guit->window->drag_save_object(bw->window, c,
GUI_SAVE_OBJECT_NATIVE);
} else if (mouse & BROWSER_MOUSE_DRAG_1) {
guit->window->drag_save_object(bw->window, c,
GUI_SAVE_OBJECT_ORIG);
}
} else if (mouse & (BROWSER_MOUSE_DRAG_1 |
BROWSER_MOUSE_DRAG_2)) {
browser_window_page_drag_start(bw, x, y);
browser_window_set_pointer(bw, BROWSER_POINTER_MOVE);
}
break;
}
}
/**
* Process mouse movement event
*
* \param bw The browsing context receiving the event
* \param mouse The mouse event state
* \param x The scaled x co-ordinate of the event
* \param y The scaled y co-ordinate of the event
*/
static void
browser_window_mouse_track_internal(struct browser_window *bw,
browser_mouse_state mouse,
int x, int y)
{
hlcache_handle *c = bw->current_content;
const char *status = NULL;
browser_pointer_shape pointer = BROWSER_POINTER_DEFAULT;
if (bw->window != NULL && bw->drag.window && bw != bw->drag.window) {
/* This is the root browser window and there's an active drag
* in a sub window.
* Pass the mouse action straight on to that bw. */
struct browser_window *drag_bw = bw->drag.window;
int off_x = 0;
int off_y = 0;
browser_window_get_position(drag_bw, true, &off_x, &off_y);
if (drag_bw->browser_window_type == BROWSER_WINDOW_FRAME) {
browser_window_mouse_track_internal(drag_bw,
mouse,
x - off_x,
y - off_y);
} else if (drag_bw->browser_window_type == BROWSER_WINDOW_IFRAME) {
browser_window_mouse_track_internal(drag_bw, mouse,
x - off_x / bw->scale,
y - off_y / bw->scale);
}
return;
}
if (bw->children) {
/* Browser window has children (frames) */
struct browser_window *child;
int cur_child;
int children = bw->rows * bw->cols;
for (cur_child = 0; cur_child < children; cur_child++) {
child = &bw->children[cur_child];
if ((x < child->x) ||
(y < child->y) ||
(child->x + child->width < x) ||
(child->y + child->height < y)) {
/* Click not in this child */
continue;
}
/* It's this child that contains the mouse; pass
* mouse action on to child */
browser_window_mouse_track_internal(
child,
mouse,
x - child->x + scrollbar_get_offset(child->scroll_x),
y - child->y + scrollbar_get_offset(child->scroll_y));
/* Mouse action was for this child, we're done */
return;
}
/* Odd if we reached here, but nothing else can use the click
* when there are children. */
return;
}
if (c == NULL && bw->drag.type != DRAGGING_FRAME) {
return;
}
if (bw->drag.type != DRAGGING_NONE && !mouse) {
browser_window_mouse_drag_end(bw, mouse, x, y);
}
/* Browser window's horizontal scrollbar */
if (bw->scroll_x != NULL && bw->drag.type != DRAGGING_SCR_Y) {
int scr_x, scr_y;
browser_window_get_scrollbar_pos(bw, true, &scr_x, &scr_y);
scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x);
scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y);
if ((bw->drag.type == DRAGGING_SCR_X) ||
(scr_x > 0 &&
scr_x < get_horz_scrollbar_len(bw) &&
scr_y > 0 &&
scr_y < SCROLLBAR_WIDTH &&
bw->drag.type == DRAGGING_NONE)) {
/* Start a scrollbar drag, or continue existing drag */
status = scrollbar_mouse_status_to_message(
scrollbar_mouse_action(bw->scroll_x,
mouse,
scr_x,
scr_y));
pointer = BROWSER_POINTER_DEFAULT;
if (status != NULL) {
browser_window_set_status(bw, status);
}
browser_window_set_pointer(bw, pointer);
return;
}
}
/* Browser window's vertical scrollbar */
if (bw->scroll_y != NULL) {
int scr_x, scr_y;
browser_window_get_scrollbar_pos(bw, false, &scr_x, &scr_y);
scr_x = x - scr_x - scrollbar_get_offset(bw->scroll_x);
scr_y = y - scr_y - scrollbar_get_offset(bw->scroll_y);
if ((bw->drag.type == DRAGGING_SCR_Y) ||
(scr_y > 0 &&
scr_y < get_vert_scrollbar_len(bw) &&
scr_x > 0 &&
scr_x < SCROLLBAR_WIDTH &&
bw->drag.type == DRAGGING_NONE)) {
/* Start a scrollbar drag, or continue existing drag */
status = scrollbar_mouse_status_to_message(
scrollbar_mouse_action(bw->scroll_y,
mouse,
scr_x,
scr_y));
pointer = BROWSER_POINTER_DEFAULT;
if (status != NULL) {
browser_window_set_status(bw, status);
}
browser_window_set_pointer(bw, pointer);
return;
}
}
if (bw->drag.type == DRAGGING_FRAME) {
browser_window_resize_frame(bw, bw->x + x, bw->y + y);
} else if (bw->drag.type == DRAGGING_PAGE_SCROLL) {
/* mouse movement since drag started */
struct rect rect;
rect.x0 = bw->drag.start_x - x;
rect.y0 = bw->drag.start_y - y;
/* new scroll offsets */
rect.x0 += bw->drag.start_scroll_x;
rect.y0 += bw->drag.start_scroll_y;
bw->drag.start_scroll_x = rect.x1 = rect.x0;
bw->drag.start_scroll_y = rect.y1 = rect.y0;
browser_window_set_scroll(bw, &rect);
} else {
assert(c != NULL);
content_mouse_track(c, bw, mouse, x, y);
}
}
/**
* perform a scroll operation at a given coordinate
*
* \param bw The browsing context receiving the event
* \param x The scaled x co-ordinate of the event
* \param y The scaled y co-ordinate of the event
*/
static bool
browser_window_scroll_at_point_internal(struct browser_window *bw,
int x, int y,
int scrx, int scry)
{
assert(bw != NULL);
/* Handle (i)frame scroll offset (core-managed browser windows only) */
x += scrollbar_get_offset(bw->scroll_x);
y += scrollbar_get_offset(bw->scroll_y);
if (bw->children) {
/* Browser window has children, so pass request on to
* appropriate child */
struct browser_window *bwc;
int cur_child;
int children = bw->rows * bw->cols;
/* Loop through all children of bw */
for (cur_child = 0; cur_child < children; cur_child++) {
/* Set current child */
bwc = &bw->children[cur_child];
/* Skip this frame if (x, y) coord lies outside */
if (x < bwc->x || bwc->x + bwc->width < x ||
y < bwc->y || bwc->y + bwc->height < y)
continue;
/* Pass request into this child */
return browser_window_scroll_at_point_internal(
bwc,
(x - bwc->x),
(y - bwc->y),
scrx, scry);
}
}
/* Try to scroll any current content */
if (bw->current_content != NULL &&
content_scroll_at_point(bw->current_content, x, y, scrx, scry) == true) {
/* Scroll handled by current content */
return true;
}
/* Try to scroll this window. */
return (int)scrollbar_scroll(bw->scroll_y, scry) |
(int)scrollbar_scroll(bw->scroll_x, scrx);
}
/**
* allows a dragged file to be dropped into a browser window at a position
*
* \param bw The browsing context receiving the event
* \param x The scaled x co-ordinate of the event
* \param y The scaled y co-ordinate of the event
* \param file filename to be put in the widget
*/
static bool
browser_window_drop_file_at_point_internal(struct browser_window *bw,
int x, int y,
char *file)
{
assert(bw != NULL);
/* Handle (i)frame scroll offset (core-managed browser windows only) */
x += scrollbar_get_offset(bw->scroll_x);
y += scrollbar_get_offset(bw->scroll_y);
if (bw->children) {
/* Browser window has children, so pass request on to
* appropriate child */
struct browser_window *bwc;
int cur_child;
int children = bw->rows * bw->cols;
/* Loop through all children of bw */
for (cur_child = 0; cur_child < children; cur_child++) {
/* Set current child */
bwc = &bw->children[cur_child];
/* Skip this frame if (x, y) coord lies outside */
if (x < bwc->x || bwc->x + bwc->width < x ||
y < bwc->y || bwc->y + bwc->height < y)
continue;
/* Pass request into this child */
return browser_window_drop_file_at_point_internal(
bwc,
(x - bwc->x),
(y - bwc->y),
file);
}
}
/* Pass file drop on to any content */
if (bw->current_content != NULL) {
return content_drop_file_at_point(bw->current_content,
x, y, file);
}
return false;
}
/**
* Check if this is an internal navigation URL.
*
* This safely checks if the given url is an internal navigation even
* for urls with no scheme or path.
*
* \param url The URL to check
* \return true if an internal navigation url else false
*/
static bool
is_internal_navigate_url(nsurl *url)
{
bool is_internal = false;
lwc_string *scheme, *path;
scheme = nsurl_get_component(url, NSURL_SCHEME);
if (scheme != NULL) {
path = nsurl_get_component(url, NSURL_PATH);
if (path != NULL) {
if (scheme == corestring_lwc_about) {
if (path == corestring_lwc_query_auth) {
is_internal = true;
} else if (path == corestring_lwc_query_ssl) {
is_internal = true;
} else if (path == corestring_lwc_query_timeout) {
is_internal = true;
} else if (path == corestring_lwc_query_fetcherror) {
is_internal = true;
}
}
lwc_string_unref(path);
}
lwc_string_unref(scheme);
}
return is_internal;
}
/* exported interface, documented in netsurf/browser_window.h */
nserror
browser_window_get_name(struct browser_window *bw, const char **out_name)
{
assert(bw != NULL);
*out_name = bw->name;
return NSERROR_OK;
}
/* exported interface, documented in netsurf/browser_window.h */
nserror
browser_window_set_name(struct browser_window *bw, const char *name)
{
char *nname = NULL;
assert(bw != NULL);
if (name != NULL) {
nname = strdup(name);
if (nname == NULL) {
return NSERROR_NOMEM;
}
}
if (bw->name != NULL) {
free(bw->name);
}
bw->name = nname;
return NSERROR_OK;
}
/* exported interface, documented in netsurf/browser_window.h */
bool
browser_window_redraw(struct browser_window *bw,
int x, int y,
const struct rect *clip,
const struct redraw_context *ctx)
{
struct redraw_context new_ctx = *ctx;
int width = 0;
int height = 0;
bool plot_ok = true;
content_type content_type;
struct content_redraw_data data;
struct rect content_clip;
nserror res;
if (bw == NULL) {
NSLOG(netsurf, INFO, "NULL browser window");
return false;
}
x /= bw->scale;
y /= bw->scale;
if ((bw->current_content == NULL) &&
(bw->children == NULL)) {
/* Browser window has no content, render blank fill */
ctx->plot->clip(ctx, clip);
return (ctx->plot->rectangle(ctx, plot_style_fill_white, clip) == NSERROR_OK);
}
/* Browser window has content OR children (frames) */
if ((bw->window != NULL) &&
(ctx->plot->option_knockout)) {
/* Root browser window: start knockout */
knockout_plot_start(ctx, &new_ctx);
}
new_ctx.plot->clip(ctx, clip);
/* Handle redraw of any browser window children */
if (bw->children) {
struct browser_window *child;
int cur_child;
int children = bw->rows * bw->cols;
if (bw->window != NULL) {
/* Root browser window; start with blank fill */
plot_ok &= (new_ctx.plot->rectangle(ctx,
plot_style_fill_white,
clip) == NSERROR_OK);
}
/* Loop through all children of bw */
for (cur_child = 0; cur_child < children; cur_child++) {
/* Set current child */
child = &bw->children[cur_child];
/* Get frame edge area in global coordinates */
content_clip.x0 = (x + child->x) * child->scale;
content_clip.y0 = (y + child->y) * child->scale;
content_clip.x1 = content_clip.x0 +
child->width * child->scale;
content_clip.y1 = content_clip.y0 +
child->height * child->scale;
/* Intersect it with clip rectangle */
if (content_clip.x0 < clip->x0)
content_clip.x0 = clip->x0;
if (content_clip.y0 < clip->y0)
content_clip.y0 = clip->y0;
if (clip->x1 < content_clip.x1)
content_clip.x1 = clip->x1;
if (clip->y1 < content_clip.y1)
content_clip.y1 = clip->y1;
/* Skip this frame if it lies outside clip rectangle */
if (content_clip.x0 >= content_clip.x1 ||
content_clip.y0 >= content_clip.y1)
continue;
/* Redraw frame */
plot_ok &= browser_window_redraw(child,
x + child->x,
y + child->y,
&content_clip,
&new_ctx);
}
/* Nothing else to redraw for browser windows with children;
* cleanup and return
*/
if (bw->window != NULL && ctx->plot->option_knockout) {
/* Root browser window: knockout end */
knockout_plot_end(ctx);
}
return plot_ok;
}
/* Handle browser windows with content to redraw */
content_type = content_get_type(bw->current_content);
if (content_type != CONTENT_HTML && content_type != CONTENT_TEXTPLAIN) {
/* Set render area according to scale */
width = content_get_width(bw->current_content) * bw->scale;
height = content_get_height(bw->current_content) * bw->scale;
/* Non-HTML may not fill viewport to extents, so plot white
* background fill */
plot_ok &= (new_ctx.plot->rectangle(&new_ctx,
plot_style_fill_white,
clip) == NSERROR_OK);
}
/* Set up content redraw data */
data.x = x - scrollbar_get_offset(bw->scroll_x);
data.y = y - scrollbar_get_offset(bw->scroll_y);
data.width = width;
data.height = height;
data.background_colour = 0xFFFFFF;
data.scale = bw->scale;
data.repeat_x = false;
data.repeat_y = false;
content_clip = *clip;
if (!bw->window) {
int x0 = x * bw->scale;
int y0 = y * bw->scale;
int x1 = (x + bw->width - ((bw->scroll_y != NULL) ?
SCROLLBAR_WIDTH : 0)) * bw->scale;
int y1 = (y + bw->height - ((bw->scroll_x != NULL) ?
SCROLLBAR_WIDTH : 0)) * bw->scale;
if (content_clip.x0 < x0) content_clip.x0 = x0;
if (content_clip.y0 < y0) content_clip.y0 = y0;
if (x1 < content_clip.x1) content_clip.x1 = x1;
if (y1 < content_clip.y1) content_clip.y1 = y1;
}
/* Render the content */
plot_ok &= content_redraw(bw->current_content, &data,
&content_clip, &new_ctx);
/* Back to full clip rect */
new_ctx.plot->clip(&new_ctx, clip);
if (!bw->window) {
/* Render scrollbars */
int off_x, off_y;
if (bw->scroll_x != NULL) {
browser_window_get_scrollbar_pos(bw, true,
&off_x, &off_y);
res = scrollbar_redraw(bw->scroll_x,
x + off_x, y + off_y, clip,
bw->scale, &new_ctx);
if (res != NSERROR_OK) {
plot_ok = false;
}
}
if (bw->scroll_y != NULL) {
browser_window_get_scrollbar_pos(bw, false,
&off_x, &off_y);
res = scrollbar_redraw(bw->scroll_y,
x + off_x, y + off_y, clip,
bw->scale, &new_ctx);
if (res != NSERROR_OK) {
plot_ok = false;
}
}
}
if (bw->window != NULL && ctx->plot->option_knockout) {
/* Root browser window: end knockout */
knockout_plot_end(ctx);
}
return plot_ok;
}
/* exported interface, documented in netsurf/browser_window.h */
bool browser_window_redraw_ready(struct browser_window *bw)
{
if (bw == NULL) {
NSLOG(netsurf, INFO, "NULL browser window");
return false;
} else if (bw->current_content != NULL) {
/* Can't render locked contents */
return !content_is_locked(bw->current_content);
}
return true;
}
/* exported interface, documented in browser_private.h */
void browser_window_update_extent(struct browser_window *bw)
{
if (bw->window != NULL) {
/* Front end window */
guit->window->event(bw->window, GW_EVENT_UPDATE_EXTENT);
} else {
/* Core-managed browser window */
browser_window_handle_scrollbars(bw);
}
}
/* exported interface, documented in netsurf/browser_window.h */
void
browser_window_get_position(struct browser_window *bw,
bool root,
int *pos_x,
int *pos_y)
{
*pos_x = 0;
*pos_y = 0;
assert(bw != NULL);
while (bw) {
switch (bw->browser_window_type) {
case BROWSER_WINDOW_FRAMESET:
*pos_x += bw->x * bw->scale;
*pos_y += bw->y * bw->scale;
break;
case BROWSER_WINDOW_NORMAL:
/* There is no offset to the root browser window */
break;
case BROWSER_WINDOW_FRAME:
/* Iframe and Frame handling is identical;
* fall though */
case BROWSER_WINDOW_IFRAME:
*pos_x += (bw->x - scrollbar_get_offset(bw->scroll_x)) *
bw->scale;
*pos_y += (bw->y - scrollbar_get_offset(bw->scroll_y)) *
bw->scale;
break;
}
bw = bw->parent;
if (!root) {
/* return if we just wanted the position in the parent
* browser window. */
return;
}
}
}
/* exported interface, documented in netsurf/browser_window.h */
void browser_window_set_position(struct browser_window *bw, int x, int y)
{
assert(bw != NULL);
if (bw->window == NULL) {
/* Core managed browser window */
bw->x = x;
bw->y = y;
} else {
NSLOG(netsurf, INFO,
"Asked to set position of front end window.");
assert(0);
}
}
/* exported interface, documented in netsurf/browser_window.h */
void
browser_window_set_drag_type(struct browser_window *bw,
browser_drag_type type,
const struct rect *rect)
{
struct browser_window *top_bw = browser_window_get_root(bw);
gui_drag_type gtype;
bw->drag.type = type;
if (type == DRAGGING_NONE) {
top_bw->drag.window = NULL;
} else {
top_bw->drag.window = bw;
switch (type) {
case DRAGGING_SELECTION:
/** \todo tell front end */
return;
case DRAGGING_SCR_X:
case DRAGGING_SCR_Y:
case DRAGGING_CONTENT_SCROLLBAR:
gtype = GDRAGGING_SCROLLBAR;
break;
default:
gtype = GDRAGGING_OTHER;
break;
}
guit->window->drag_start(top_bw->window, gtype, rect);
}
}
/* exported interface, documented in netsurf/browser_window.h */
browser_drag_type browser_window_get_drag_type(struct browser_window *bw)
{
return bw->drag.type;
}
/* exported interface, documented in netsurf/browser_window.h */
struct browser_window * browser_window_get_root(struct browser_window *bw)
{
while (bw && bw->parent) {
bw = bw->parent;
}
return bw;
}
/* exported interface, documented in netsurf/browser_window.h */
browser_editor_flags browser_window_get_editor_flags(struct browser_window *bw)
{
browser_editor_flags ed_flags = BW_EDITOR_NONE;
assert(bw->window);
assert(bw->parent == NULL);
if (bw->selection.bw != NULL) {
ed_flags |= BW_EDITOR_CAN_COPY;
if (!bw->selection.read_only)
ed_flags |= BW_EDITOR_CAN_CUT;
}
if (bw->can_edit)
ed_flags |= BW_EDITOR_CAN_PASTE;
return ed_flags;
}
/* exported interface, documented in netsurf/browser_window.h */
bool browser_window_can_select(struct browser_window *bw)
{
if (bw == NULL || bw->current_content == NULL)
return false;
/* TODO: We shouldn't have to know about specific content types
* here. There should be a content_is_selectable() call. */
if (content_get_type(bw->current_content) != CONTENT_HTML &&
content_get_type(bw->current_content) !=
CONTENT_TEXTPLAIN)
return false;
return true;
}
/* exported interface, documented in netsurf/browser_window.h */
char * browser_window_get_selection(struct browser_window *bw)
{
assert(bw->window);
assert(bw->parent == NULL);
if (bw->selection.bw == NULL ||
bw->selection.bw->current_content == NULL)
return NULL;
return content_get_selection(bw->selection.bw->current_content);
}
/* exported interface, documented in netsurf/browser_window.h */
bool browser_window_can_search(struct browser_window *bw)
{
if (bw == NULL || bw->current_content == NULL)
return false;
/** \todo We shouldn't have to know about specific content
* types here. There should be a content_is_searchable() call.
*/
if ((content_get_type(bw->current_content) != CONTENT_HTML) &&
(content_get_type(bw->current_content) != CONTENT_TEXTPLAIN)) {
return false;
}
return true;
}
/* exported interface, documented in netsurf/browser_window.h */
bool browser_window_is_frameset(struct browser_window *bw)
{
return (bw->children != NULL);
}
/* exported interface, documented in netsurf/browser_window.h */
nserror
browser_window_get_scrollbar_type(struct browser_window *bw,
browser_scrolling *h,
browser_scrolling *v)
{
*h = bw->scrolling;
*v = bw->scrolling;
return NSERROR_OK;
}
/* exported interface, documented in netsurf/browser_window.h */
nserror
browser_window_get_features(struct browser_window *bw,
int x, int y,
struct browser_window_features *data)
{
/* clear the features structure to empty values */
data->link = NULL;
data->object = NULL;
data->main = NULL;
data->form_features = CTX_FORM_NONE;
return browser_window__get_contextual_content(bw,
x / bw->scale,
y / bw->scale,
data);
}
/* exported interface, documented in netsurf/browser_window.h */
bool
browser_window_scroll_at_point(struct browser_window *bw,
int x, int y,
int scrx, int scry)
{
return browser_window_scroll_at_point_internal(bw,
x / bw->scale,
y / bw->scale,
scrx,
scry);
}
/* exported interface, documented in netsurf/browser_window.h */
bool
browser_window_drop_file_at_point(struct browser_window *bw,
int x, int y,
char *file)
{
return browser_window_drop_file_at_point_internal(bw,
x / bw->scale,
y / bw->scale,
file);
}
/* exported interface, documented in netsurf/browser_window.h */
void
browser_window_set_gadget_filename(struct browser_window *bw,
struct form_control *gadget,
const char *fn)
{
html_set_file_gadget_filename(bw->current_content, gadget, fn);
}
/* exported interface, documented in netsurf/browser_window.h */
nserror
browser_window_debug_dump(struct browser_window *bw,
FILE *f,
enum content_debug op)
{
if (bw->current_content != NULL) {
return content_debug_dump(bw->current_content, f, op);
}
return NSERROR_OK;
}
/* exported interface, documented in netsurf/browser_window.h */
nserror browser_window_debug(struct browser_window *bw, enum content_debug op)
{
if (bw->current_content != NULL) {
return content_debug(bw->current_content, op);
}
return NSERROR_OK;
}
/* exported interface, documented in netsurf/browser_window.h */
nserror
browser_window_create(enum browser_window_create_flags flags,
nsurl *url,
nsurl *referrer,
struct browser_window *existing,
struct browser_window **bw)
{
gui_window_create_flags gw_flags = GW_CREATE_NONE;
struct browser_window *ret;
nserror err;
/* Check parameters */
if (flags & BW_CREATE_CLONE) {
if (existing == NULL) {
assert(0 && "Failed: No existing window provided.");
return NSERROR_BAD_PARAMETER;
}
}
if (!(flags & BW_CREATE_HISTORY)) {
if (!(flags & BW_CREATE_CLONE) || existing == NULL) {
assert(0 && "Failed: Must have existing for history.");
return NSERROR_BAD_PARAMETER;
}
}
ret = calloc(1, sizeof(struct browser_window));
if (ret == NULL) {
return NSERROR_NOMEM;
}
/* Initialise common parts */
err = browser_window_initialise_common(flags, ret, existing);
if (err != NSERROR_OK) {
browser_window_destroy(ret);
return err;
}
/* window characteristics */
ret->browser_window_type = BROWSER_WINDOW_NORMAL;
ret->scrolling = BW_SCROLLING_YES;
ret->border = true;
ret->no_resize = true;
ret->focus = ret;
/* initialise last action with creation time */
nsu_getmonotonic_ms(&ret->last_action);
/* The existing gui_window is on the top-level existing
* browser_window. */
existing = browser_window_get_root(existing);
/* Set up gui_window creation flags */
if (flags & BW_CREATE_TAB)
gw_flags |= GW_CREATE_TAB;
if (flags & BW_CREATE_CLONE)
gw_flags |= GW_CREATE_CLONE;
if (flags & BW_CREATE_FOREGROUND)
gw_flags |= GW_CREATE_FOREGROUND;
if (flags & BW_CREATE_FOCUS_LOCATION)
gw_flags |= GW_CREATE_FOCUS_LOCATION;
ret->window = guit->window->create(ret,
(existing != NULL) ? existing->window : NULL,
gw_flags);
if (ret->window == NULL) {
browser_window_destroy(ret);
return NSERROR_BAD_PARAMETER;
}
if (url != NULL) {
enum browser_window_nav_flags nav_flags;
nav_flags = BW_NAVIGATE_NO_TERMINAL_HISTORY_UPDATE;
if (flags & BW_CREATE_UNVERIFIABLE) {
nav_flags |= BW_NAVIGATE_UNVERIFIABLE;
}
if (flags & BW_CREATE_HISTORY) {
nav_flags |= BW_NAVIGATE_HISTORY;
}
browser_window_navigate(ret,
url,
referrer,
nav_flags,
NULL,
NULL,
NULL);
}
if (bw != NULL) {
*bw = ret;
}
return NSERROR_OK;
}
/* exported internal interface, documented in desktop/browser_private.h */
nserror
browser_window_initialise_common(enum browser_window_create_flags flags,
struct browser_window *bw,
const struct browser_window *existing)
{
nserror err;
assert(bw);
/* new javascript context for each window/(i)frame */
err = js_newheap(nsoption_int(script_timeout), &bw->jsheap);
if (err != NSERROR_OK)
return err;
if (flags & BW_CREATE_CLONE) {
assert(existing != NULL);
/* clone history */
err = browser_window_history_clone(existing, bw);
/* copy the scale */
bw->scale = existing->scale;
} else {
/* create history */
err = browser_window_history_create(bw);
/* default scale */
bw->scale = (float) nsoption_int(scale) / 100.0;
}
if (err != NSERROR_OK)
return err;
/* window characteristics */
bw->refresh_interval = -1;
bw->drag.type = DRAGGING_NONE;
bw->scroll_x = NULL;
bw->scroll_y = NULL;
bw->focus = NULL;
/* initialise status text cache */
bw->status.text = NULL;
bw->status.text_len = 0;
bw->status.match = 0;
bw->status.miss = 0;
return NSERROR_OK;
}
/* exported interface, documented in netsurf/browser_window.h */
void browser_window_destroy(struct browser_window *bw)
{
/* can't destoy child windows on their own */
assert(!bw->parent);
/* destroy */
browser_window_destroy_internal(bw);
free(bw);
}
/* exported interface, documented in netsurf/browser_window.h */
nserror browser_window_refresh_url_bar(struct browser_window *bw)
{
nserror ret;
nsurl *display_url, *url;
assert(bw);
if (bw->parent != NULL) {
/* Not root window; don't set a URL in GUI URL bar */
return NSERROR_OK;
}
if (bw->current_content == NULL) {
/* no content so return about:blank */
ret = browser_window_refresh_url_bar_internal(bw,
corestring_nsurl_about_blank);
} else if (bw->throbbing && bw->loading_parameters.url != NULL) {
/* Throbbing and we have loading parameters, use those */
url = bw->loading_parameters.url;
ret = browser_window_refresh_url_bar_internal(bw, url);
} else if (bw->frag_id == NULL) {
if (bw->internal_nav) {
url = bw->loading_parameters.url;
} else {
url = hlcache_handle_get_url(bw->current_content);
}
ret = browser_window_refresh_url_bar_internal(bw, url);
} else {
/* Combine URL and Fragment */
if (bw->internal_nav) {
url = bw->loading_parameters.url;
} else {
url = hlcache_handle_get_url(bw->current_content);
}
ret = nsurl_refragment(
url,
bw->frag_id, &display_url);
if (ret == NSERROR_OK) {
ret = browser_window_refresh_url_bar_internal(bw,
display_url);
nsurl_unref(display_url);
}
}
return ret;
}
/* exported interface documented in netsurf/browser_window.h */
nserror
browser_window_navigate(struct browser_window *bw,
nsurl *url,
nsurl *referrer,
enum browser_window_nav_flags flags,
char *post_urlenc,
struct fetch_multipart_data *post_multipart,
hlcache_handle *parent)
{
int depth = 0;
struct browser_window *cur;
uint32_t fetch_flags = 0;
bool fetch_is_post = (post_urlenc != NULL || post_multipart != NULL);
llcache_post_data post;
hlcache_child_context child;
nserror error;
bool is_internal = false;
struct browser_fetch_parameters params, *pass_params = NULL;
assert(bw);
assert(url);
NSLOG(netsurf, INFO, "bw %p, url %s", bw, nsurl_access(url));
/*
* determine if navigation is internal url, if so, we do not
* do certain things during the load.
*/
is_internal = is_internal_navigate_url(url);
if (is_internal &&
!(flags & BW_NAVIGATE_INTERNAL)) {
/* Internal navigation detected, but flag not set, only allow
* this is there's a fetch multipart
*/
if (post_multipart == NULL) {
return NSERROR_NEED_DATA;
}
/* It *is* internal, set it as such */
flags |= BW_NAVIGATE_INTERNAL | BW_NAVIGATE_HISTORY;
/* If we were previously internal, don't update again */
if (bw->internal_nav) {
flags |= BW_NAVIGATE_NO_TERMINAL_HISTORY_UPDATE;
}
}
/* If we're navigating and we have a history entry and a content
* then update the history entry before we navigate to save our
* current state. However since history navigation pre-moves
* the history state, we ensure that we only do this if we've not
* been suppressed. In the suppressed case, the history code
* updates the history itself before navigating.
*/
if (bw->current_content != NULL &&
bw->history != NULL &&
bw->history->current != NULL &&
!is_internal &&
!(flags & BW_NAVIGATE_NO_TERMINAL_HISTORY_UPDATE)) {
browser_window_history_update(bw, bw->current_content);
}
/* don't allow massively nested framesets */
for (cur = bw; cur->parent; cur = cur->parent) {
depth++;
}
if (depth > FRAME_DEPTH) {
NSLOG(netsurf, INFO, "frame depth too high.");
return NSERROR_FRAME_DEPTH;
}
/* Set up retrieval parameters */
if (!(flags & BW_NAVIGATE_UNVERIFIABLE)) {
fetch_flags |= LLCACHE_RETRIEVE_VERIFIABLE;
}
if (post_multipart != NULL) {
post.type = LLCACHE_POST_MULTIPART;
post.data.multipart = post_multipart;
} else if (post_urlenc != NULL) {
post.type = LLCACHE_POST_URL_ENCODED;
post.data.urlenc = post_urlenc;
}
child.charset = content_get_encoding(parent, CONTENT_ENCODING_NORMAL);
if ((parent != NULL) && (content_get_type(parent) == CONTENT_HTML)) {
child.quirks = content_get_quirks(parent);
} else {
child.quirks = false;
}
url = nsurl_ref(url);
if (referrer != NULL) {
referrer = nsurl_ref(referrer);
}
/* Get download out of the way */
if ((flags & BW_NAVIGATE_DOWNLOAD) != 0) {
error = browser_window_download(bw,
url,
referrer,
fetch_flags,
fetch_is_post,
&post);
nsurl_unref(url);
if (referrer != NULL) {
nsurl_unref(referrer);
}
return error;
}
if (bw->frag_id != NULL) {
lwc_string_unref(bw->frag_id);
}
bw->frag_id = NULL;
if (nsurl_has_component(url, NSURL_FRAGMENT)) {
bool same_url = false;
bw->frag_id = nsurl_get_component(url, NSURL_FRAGMENT);
/* Compare new URL with existing one (ignoring fragments) */
if ((bw->current_content != NULL) &&
(hlcache_handle_get_url(bw->current_content) != NULL)) {
same_url = nsurl_compare(
url,
hlcache_handle_get_url(bw->current_content),
NSURL_COMPLETE);
}
/* if we're simply moving to another ID on the same page,
* don't bother to fetch, just update the window.
*/
if ((same_url) &&
(fetch_is_post == false) &&
(nsurl_has_component(url, NSURL_QUERY) == false)) {
nsurl_unref(url);
if (referrer != NULL) {
nsurl_unref(referrer);
}
if ((flags & BW_NAVIGATE_HISTORY) != 0) {
browser_window_history_add(bw,
bw->current_content,
bw->frag_id);
}
browser_window_update(bw, false);
if (bw->current_content != NULL) {
browser_window_refresh_url_bar(bw);
}
return NSERROR_OK;
}
}
browser_window_stop(bw);
browser_window_remove_caret(bw, false);
browser_window_destroy_children(bw);
browser_window_destroy_iframes(bw);
/* Set up the fetch parameters */
memset(&params, 0, sizeof(params));
params.url = nsurl_ref(url);
if (referrer != NULL) {
params.referrer = nsurl_ref(referrer);
}
params.flags = flags;
if (post_urlenc != NULL) {
params.post_urlenc = strdup(post_urlenc);
}
if (post_multipart != NULL) {
params.post_multipart = fetch_multipart_data_clone(post_multipart);
}
if (parent != NULL) {
params.parent_charset = strdup(child.charset);
params.parent_quirks = child.quirks;
}
bw->internal_nav = is_internal;
if (is_internal) {
pass_params = &params;
} else {
/* At this point, we're navigating, so store the fetch parameters */
browser_window__free_fetch_parameters(&bw->loading_parameters);
memcpy(&bw->loading_parameters, &params, sizeof(params));
memset(&params, 0, sizeof(params));
pass_params = &bw->loading_parameters;
}
error = browser_window__navigate_internal(bw, pass_params);
nsurl_unref(url);
if (referrer != NULL) {
nsurl_unref(referrer);
}
if (is_internal) {
browser_window__free_fetch_parameters(&params);
}
return error;
}
/**
* Internal navigation handler for normal fetches
*/
static nserror
navigate_internal_real(struct browser_window *bw,
struct browser_fetch_parameters *params)
{
uint32_t fetch_flags = 0;
bool fetch_is_post;
llcache_post_data post;
hlcache_child_context child;
nserror res;
hlcache_handle *c;
NSLOG(netsurf, INFO, "Loading '%s'", nsurl_access(params->url));
fetch_is_post = (params->post_urlenc != NULL || params->post_multipart != NULL);
/* Clear SSL info for load */
cert_chain_free(bw->loading_cert_chain);
bw->loading_cert_chain = NULL;
/* Set up retrieval parameters */
if (!(params->flags & BW_NAVIGATE_UNVERIFIABLE)) {
fetch_flags |= LLCACHE_RETRIEVE_VERIFIABLE;
}
if (params->post_multipart != NULL) {
post.type = LLCACHE_POST_MULTIPART;
post.data.multipart = params->post_multipart;
} else if (params->post_urlenc != NULL) {
post.type = LLCACHE_POST_URL_ENCODED;
post.data.urlenc = params->post_urlenc;
}
if (params->parent_charset != NULL) {
child.charset = params->parent_charset;
child.quirks = params->parent_quirks;
}
browser_window_set_status(bw, messages_get("Loading"));
bw->history_add = (params->flags & BW_NAVIGATE_HISTORY);
/* Verifiable fetches may trigger a download */
if (!(params->flags & BW_NAVIGATE_UNVERIFIABLE)) {
fetch_flags |= HLCACHE_RETRIEVE_MAY_DOWNLOAD;
}
res = hlcache_handle_retrieve(params->url,
fetch_flags | HLCACHE_RETRIEVE_SNIFF_TYPE,
params->referrer,
fetch_is_post ? &post : NULL,
browser_window_callback,
bw,
params->parent_charset != NULL ? &child : NULL,
CONTENT_ANY,
&c);
switch (res) {
case NSERROR_OK:
bw->loading_content = c;
browser_window_start_throbber(bw);
if (bw->window != NULL) {
guit->window->set_icon(bw->window, NULL);
}
if (bw->internal_nav == false) {
res = browser_window_refresh_url_bar_internal(bw,
params->url);
}
break;
case NSERROR_NO_FETCH_HANDLER: /* no handler for this type */
/** \todo does this always try and download even
* unverifiable content?
*/
res = guit->misc->launch_url(params->url);
break;
default: /* report error to user */
browser_window_set_status(bw, messages_get_errorcode(res));
break;
}
/* Record time */
nsu_getmonotonic_ms(&bw->last_action);
return res;
}
/**
* Internal navigation handler for the authentication query handler
*
* If the parameters indicate we're processing a *response* from the handler
* then we deal with that, otherwise we pass it on to the about: handler
*/
static nserror
navigate_internal_query_auth(struct browser_window *bw,
struct browser_fetch_parameters *params)
{
char *userpass = NULL;
const char *username, *password, *realm, *siteurl;
nsurl *sitensurl;
nserror res;
bool is_login = false, is_cancel = false;
assert(params->post_multipart != NULL);
is_login = fetch_multipart_data_find(params->post_multipart, "login") != NULL;
is_cancel = fetch_multipart_data_find(params->post_multipart, "cancel") != NULL;
if (!(is_login || is_cancel)) {
/* This is a request, so pass it on */
return navigate_internal_real(bw, params);
}
if (is_cancel) {
/* We're processing a cancel, do a rough-and-ready nav to
* about:blank
*/
browser_window__free_fetch_parameters(&bw->loading_parameters);
bw->loading_parameters.url = nsurl_ref(corestring_nsurl_about_blank);
bw->loading_parameters.flags = BW_NAVIGATE_NO_TERMINAL_HISTORY_UPDATE | BW_NAVIGATE_INTERNAL;
bw->internal_nav = true;
return browser_window__navigate_internal(bw, &bw->loading_parameters);
}
/* We're processing a "login" attempt from the form */
/* Retrieve the data */
username = fetch_multipart_data_find(params->post_multipart, "username");
password = fetch_multipart_data_find(params->post_multipart, "password");
realm = fetch_multipart_data_find(params->post_multipart, "realm");
siteurl = fetch_multipart_data_find(params->post_multipart, "siteurl");
if (username == NULL || password == NULL ||
realm == NULL || siteurl == NULL) {
/* Bad inputs, simply fail */
return NSERROR_INVALID;
}
/* Parse the URL */
res = nsurl_create(siteurl, &sitensurl);
if (res != NSERROR_OK) {
return res;
}
/* Construct the username/password */
res = browser_window__build_userpass(username, password, &userpass);
if (res != NSERROR_OK) {
nsurl_unref(sitensurl);
return res;
}
/* And let urldb know */
urldb_set_auth_details(sitensurl, realm, userpass);
/* Clean up */
free(userpass);
nsurl_unref(sitensurl);
/* Finally navigate to the original loading parameters */
bw->internal_nav = false;
return navigate_internal_real(bw, &bw->loading_parameters);
}
/**
* Internal navigation handler for the SSL/privacy query page.
*
* If the parameters indicate we're processing a *response* from the handler
* then we deal with that, otherwise we pass it on to the about: handler
*/
static nserror
navigate_internal_query_ssl(struct browser_window *bw,
struct browser_fetch_parameters *params)
{
bool is_proceed = false, is_back = false;
const char *siteurl = NULL;
nsurl *siteurl_ns;
assert(params->post_multipart != NULL);
is_proceed = fetch_multipart_data_find(params->post_multipart, "proceed") != NULL;
is_back = fetch_multipart_data_find(params->post_multipart, "back") != NULL;
siteurl = fetch_multipart_data_find(params->post_multipart, "siteurl");
if (!(is_proceed || is_back) || siteurl == NULL) {
/* This is a request, so pass it on */
return navigate_internal_real(bw, params);
}
if (nsurl_create(siteurl, &siteurl_ns) != NSERROR_OK) {
NSLOG(netsurf, ERROR, "Unable to reset ssl loading parameters");
} else {
/* In order that we may proceed, replace the loading parameters */
nsurl_unref(bw->loading_parameters.url);
bw->loading_parameters.url = siteurl_ns;
}
return browser_window__handle_ssl_query_response(is_proceed, bw);
}
/**
* Internal navigation handler for the timeout query page.
*
* If the parameters indicate we're processing a *response* from the handler
* then we deal with that, otherwise we pass it on to the about: handler
*/
static nserror
navigate_internal_query_timeout(struct browser_window *bw,
struct browser_fetch_parameters *params)
{
bool is_retry = false, is_back = false;
NSLOG(netsurf, INFO, "bw:%p params:%p", bw, params);
assert(params->post_multipart != NULL);
is_retry = fetch_multipart_data_find(params->post_multipart, "retry") != NULL;
is_back = fetch_multipart_data_find(params->post_multipart, "back") != NULL;
if (is_back) {
/* do a rough-and-ready nav to the old 'current'
* parameters, with any post data stripped away
*/
return browser_window__reload_current_parameters(bw);
}
if (is_retry) {
/* Finally navigate to the original loading parameters */
bw->internal_nav = false;
return navigate_internal_real(bw, &bw->loading_parameters);
}
return navigate_internal_real(bw, params);
}
/**
* Internal navigation handler for the fetch error query page.
*
* If the parameters indicate we're processing a *response* from the handler
* then we deal with that, otherwise we pass it on to the about: handler
*/
static nserror
navigate_internal_query_fetcherror(struct browser_window *bw,
struct browser_fetch_parameters *params)
{
bool is_retry = false, is_back = false;
NSLOG(netsurf, INFO, "bw:%p params:%p", bw, params);
assert(params->post_multipart != NULL);
is_retry = fetch_multipart_data_find(params->post_multipart, "retry") != NULL;
is_back = fetch_multipart_data_find(params->post_multipart, "back") != NULL;
if (is_back) {
/* do a rough-and-ready nav to the old 'current'
* parameters, with any post data stripped away
*/
return browser_window__reload_current_parameters(bw);
}
if (is_retry) {
/* Finally navigate to the original loading parameters */
bw->internal_nav = false;
return navigate_internal_real(bw, &bw->loading_parameters);
}
return navigate_internal_real(bw, params);
}
/**
* dispatch to internal query handlers or normal navigation
*
* Here we determine if we're navigating to an internal query URI and
* if so, what we need to do about it.
*
* \note these check must match those in is_internal_navigate_url()
*
* If we're not, then we just move on to the real navigate.
*/
nserror
browser_window__navigate_internal(struct browser_window *bw,
struct browser_fetch_parameters *params)
{
lwc_string *scheme, *path;
/* All our special URIs are in the about: scheme */
scheme = nsurl_get_component(params->url, NSURL_SCHEME);
if (scheme != corestring_lwc_about) {
lwc_string_unref(scheme);
goto normal_fetch;
}
lwc_string_unref(scheme);
/* Is it the auth query handler? */
path = nsurl_get_component(params->url, NSURL_PATH);
if (path == corestring_lwc_query_auth) {
lwc_string_unref(path);
return navigate_internal_query_auth(bw, params);
}
if (path == corestring_lwc_query_ssl) {
lwc_string_unref(path);
return navigate_internal_query_ssl(bw, params);
}
if (path == corestring_lwc_query_timeout) {
lwc_string_unref(path);
return navigate_internal_query_timeout(bw, params);
}
if (path == corestring_lwc_query_fetcherror) {
lwc_string_unref(path);
return navigate_internal_query_fetcherror(bw, params);
}
if (path != NULL) {
lwc_string_unref(path);
}
/* Fall through to a normal about: fetch */
normal_fetch:
return navigate_internal_real(bw, params);
}
/* Exported interface, documented in netsurf/browser_window.h */
bool browser_window_up_available(struct browser_window *bw)
{
bool result = false;
if (bw != NULL && bw->current_content != NULL) {
nsurl *parent;
nserror err;
err = nsurl_parent(hlcache_handle_get_url(bw->current_content),
&parent);
if (err == NSERROR_OK) {
result = nsurl_compare(hlcache_handle_get_url(
bw->current_content),
parent,
NSURL_COMPLETE) == false;
nsurl_unref(parent);
}
}
return result;
}
/* Exported interface, documented in netsurf/browser_window.h */
nserror browser_window_navigate_up(struct browser_window *bw, bool new_window)
{
nsurl *current, *parent;
nserror err;
if (bw == NULL)
return NSERROR_BAD_PARAMETER;
current = browser_window_access_url(bw);
err = nsurl_parent(current, &parent);
if (err != NSERROR_OK) {
return err;
}
if (nsurl_compare(current, parent, NSURL_COMPLETE) == true) {
/* Can't go up to parent from here */
nsurl_unref(parent);
return NSERROR_OK;
}
if (new_window) {
err = browser_window_create(BW_CREATE_CLONE,
parent, NULL, bw, NULL);
} else {
err = browser_window_navigate(bw, parent, NULL,
BW_NAVIGATE_HISTORY,
NULL, NULL, NULL);
}
nsurl_unref(parent);
return err;
}
/* Exported interface, documented in include/netsurf/browser_window.h */
nsurl* browser_window_access_url(const struct browser_window *bw)
{
assert(bw != NULL);
if (bw->current_content != NULL) {
return hlcache_handle_get_url(bw->current_content);
} else if (bw->loading_content != NULL) {
/* TODO: should we return this? */
return hlcache_handle_get_url(bw->loading_content);
}
return corestring_nsurl_about_blank;
}
/* Exported interface, documented in include/netsurf/browser_window.h */
nserror
browser_window_get_url(struct browser_window *bw, bool fragment,nsurl** url_out)
{
nserror err;
nsurl *url;
assert(bw != NULL);
if (!fragment || bw->frag_id == NULL || bw->loading_content != NULL) {
/* If there's a loading content, then the bw->frag_id will have
* been trampled, possibly with a new frag_id, but we will
* still be returning the current URL, so in this edge case
* we just drop any fragment. */
url = nsurl_ref(browser_window_access_url(bw));
} else {
err = nsurl_refragment(browser_window_access_url(bw),
bw->frag_id, &url);
if (err != NSERROR_OK) {
return err;
}
}
*url_out = url;
return NSERROR_OK;
}
/* Exported interface, documented in netsurf/browser_window.h */
const char* browser_window_get_title(struct browser_window *bw)
{
assert(bw != NULL);
if (bw->current_content != NULL) {
return content_get_title(bw->current_content);
}
/* no content so return about:blank */
return nsurl_access(corestring_nsurl_about_blank);
}
/* Exported interface, documented in netsurf/browser_window.h */
struct history * browser_window_get_history(struct browser_window *bw)
{
assert(bw != NULL);
return bw->history;
}
/* Exported interface, documented in netsurf/browser_window.h */
bool browser_window_has_content(struct browser_window *bw)
{
assert(bw != NULL);
if (bw->current_content == NULL) {
return false;
}
return true;
}
/* Exported interface, documented in netsurf/browser_window.h */
struct hlcache_handle *browser_window_get_content(struct browser_window *bw)
{
return bw->current_content;
}
/* Exported interface, documented in netsurf/browser_window.h */
nserror browser_window_get_extents(struct browser_window *bw, bool scaled,
int *width, int *height)
{
assert(bw != NULL);
if (bw->current_content == NULL) {
*width = 0;
*height = 0;
return NSERROR_BAD_CONTENT;
}
*width = content_get_width(bw->current_content);
*height = content_get_height(bw->current_content);
if (scaled) {
*width *= bw->scale;
*height *= bw->scale;
}
return NSERROR_OK;
}
/* exported internal interface, documented in desktop/browser_private.h */
nserror
browser_window_get_dimensions(struct browser_window *bw,
int *width,
int *height)
{
nserror res;
assert(bw);
if (bw->window == NULL) {
/* Core managed browser window */
*width = bw->width;
*height = bw->height;
res = NSERROR_OK;
} else {
/* Front end window */
res = guit->window->get_dimensions(bw->window, width, height);
}
return res;
}
/* Exported interface, documented in netsurf/browser_window.h */
void
browser_window_set_dimensions(struct browser_window *bw, int width, int height)
{
assert(bw);
if (bw->window == NULL) {
/* Core managed browser window */
bw->width = width;
bw->height = height;
} else {
NSLOG(netsurf, INFO,
"Asked to set dimensions of front end window.");
assert(0);
}
}
/* Exported interface, documented in browser/browser_private.h */
nserror
browser_window_invalidate_rect(struct browser_window *bw, struct rect *rect)
{
int pos_x;
int pos_y;
struct browser_window *top = bw;
assert(bw);
if (bw->window == NULL) {
/* Core managed browser window */
browser_window_get_position(bw, true, &pos_x, &pos_y);
top = browser_window_get_root(bw);
rect->x0 += pos_x / bw->scale;
rect->y0 += pos_y / bw->scale;
rect->x1 += pos_x / bw->scale;
rect->y1 += pos_y / bw->scale;
}
rect->x0 *= top->scale;
rect->y0 *= top->scale;
rect->x1 *= top->scale;
rect->y1 *= top->scale;
return guit->window->invalidate(top->window, rect);
}
/* Exported interface, documented in netsurf/browser_window.h */
void browser_window_stop(struct browser_window *bw)
{
int children, index;
if (bw->loading_content != NULL) {
hlcache_handle_abort(bw->loading_content);
hlcache_handle_release(bw->loading_content);
bw->loading_content = NULL;
}
if (bw->current_content != NULL &&
content_get_status(bw->current_content) != CONTENT_STATUS_DONE) {
nserror error;
assert(content_get_status(bw->current_content) ==
CONTENT_STATUS_READY);
error = hlcache_handle_abort(bw->current_content);
assert(error == NSERROR_OK);
}
guit->misc->schedule(-1, browser_window_refresh, bw);
if (bw->children) {
children = bw->rows * bw->cols;
for (index = 0; index < children; index++)
browser_window_stop(&bw->children[index]);
}
if (bw->iframes) {
children = bw->iframe_count;
for (index = 0; index < children; index++)
browser_window_stop(&bw->iframes[index]);
}
if (bw->current_content != NULL) {
browser_window_refresh_url_bar(bw);
}
browser_window_stop_throbber(bw);
}
/* Exported interface, documented in netsurf/browser_window.h */
nserror browser_window_reload(struct browser_window *bw, bool all)
{
hlcache_handle *c;
unsigned int i;
struct nsurl *reload_url;
if ((bw->current_content) == NULL ||
(bw->loading_content) != NULL) {
return NSERROR_INVALID;
}
if (all && content_get_type(bw->current_content) == CONTENT_HTML) {
struct html_stylesheet *sheets;
struct content_html_object *object;
unsigned int count;
c = bw->current_content;
/* invalidate objects */
object = html_get_objects(c, &count);
for (; object != NULL; object = object->next) {
if (object->content != NULL)
content_invalidate_reuse_data(object->content);
}
/* invalidate stylesheets */
sheets = html_get_stylesheets(c, &count);
for (i = STYLESHEET_START; i != count; i++) {
if (sheets[i].sheet != NULL) {
content_invalidate_reuse_data(sheets[i].sheet);
}
}
}
content_invalidate_reuse_data(bw->current_content);
reload_url = hlcache_handle_get_url(bw->current_content);
return browser_window_navigate(bw,
reload_url,
NULL,
BW_NAVIGATE_NONE,
NULL,
NULL,
NULL);
}
/* Exported interface, documented in netsurf/browser_window.h */
void browser_window_set_status(struct browser_window *bw, const char *text)
{
int text_len;
/* find topmost window */
while (bw->parent)
bw = bw->parent;
if ((bw->status.text != NULL) &&
(strcmp(text, bw->status.text) == 0)) {
/* status text is unchanged */
bw->status.match++;
return;
}
/* status text is changed */
text_len = strlen(text);
if ((bw->status.text == NULL) || (bw->status.text_len < text_len)) {
/* no current string allocation or it is not long enough */
free(bw->status.text);
bw->status.text = strdup(text);
bw->status.text_len = text_len;
} else {
/* current allocation has enough space */
memcpy(bw->status.text, text, text_len + 1);
}
bw->status.miss++;
guit->window->set_status(bw->window, bw->status.text);
}
/* Exported interface, documented in netsurf/browser_window.h */
void browser_window_set_pointer(struct browser_window *bw,
browser_pointer_shape shape)
{
struct browser_window *root = browser_window_get_root(bw);
gui_pointer_shape gui_shape;
bool loading;
uint64_t ms_now;
assert(root);
assert(root->window);
loading = ((bw->loading_content != NULL) ||
((bw->current_content != NULL) &&
(content_get_status(bw->current_content) == CONTENT_STATUS_READY)));
nsu_getmonotonic_ms(&ms_now);
if (loading && ((ms_now - bw->last_action) < 1000)) {
/* If loading and less than 1 second since last link followed,
* force progress indicator pointer */
gui_shape = GUI_POINTER_PROGRESS;
} else if (shape == BROWSER_POINTER_AUTO) {
/* Up to browser window to decide */
if (loading) {
gui_shape = GUI_POINTER_PROGRESS;
} else {
gui_shape = GUI_POINTER_DEFAULT;
}
} else {
/* Use what we were told */
gui_shape = (gui_pointer_shape)shape;
}
guit->window->set_pointer(root->window, gui_shape);
}
/* exported function documented in netsurf/browser_window.h */
nserror browser_window_schedule_reformat(struct browser_window *bw)
{
if (bw->window == NULL) {
return NSERROR_BAD_PARAMETER;
}
return guit->misc->schedule(0, scheduled_reformat, bw);
}
/* exported function documented in netsurf/browser_window.h */
void
browser_window_reformat(struct browser_window *bw,
bool background,
int width,
int height)
{
hlcache_handle *c = bw->current_content;
if (c == NULL)
return;
if (bw->browser_window_type != BROWSER_WINDOW_IFRAME) {
/* Iframe dimensions are already scaled in parent's layout */
width /= bw->scale;
height /= bw->scale;
}
if (bw->window == NULL) {
/* Core managed browser window; subtract scrollbar width */
width -= bw->scroll_y ? SCROLLBAR_WIDTH : 0;
height -= bw->scroll_x ? SCROLLBAR_WIDTH : 0;
width = width > 0 ? width : 0;
height = height > 0 ? height : 0;
}
content_reformat(c, background, width, height);
}
/* exported interface documented in netsurf/browser_window.h */
nserror
browser_window_set_scale(struct browser_window *bw, float scale, bool absolute)
{
nserror res;
/* get top browser window */
while (bw->parent) {
bw = bw->parent;
}
if (!absolute) {
/* snap small values around 1.0 */
if ((scale + bw->scale) > (1.01 - scale) &&
(scale + bw->scale) < (0.99 + scale)) {
scale = 1.0;
} else {
scale += bw->scale;
}
}
/* clamp range between 0.1 and 10 (10% and 1000%) */
if (scale < SCALE_MINIMUM) {
scale = SCALE_MINIMUM;
} else if (scale > SCALE_MAXIMUM) {
scale = SCALE_MAXIMUM;
}
res = browser_window_set_scale_internal(bw, scale);
if (res == NSERROR_OK) {
browser_window_recalculate_frameset(bw);
}
return res;
}
/* exported interface documented in netsurf/browser_window.h */
float browser_window_get_scale(struct browser_window *bw)
{
if (bw == NULL) {
return 1.0;
}
return bw->scale;
}
/* exported interface documented in netsurf/browser_window.h */
struct browser_window *
browser_window_find_target(struct browser_window *bw,
const char *target,
browser_mouse_state mouse)
{
struct browser_window *bw_target;
struct browser_window *top;
hlcache_handle *c;
int rdepth;
nserror error;
/* use the base target if we don't have one */
c = bw->current_content;
if (target == NULL &&
c != NULL &&
content_get_type(c) == CONTENT_HTML) {
target = html_get_base_target(c);
}
if (target == NULL) {
target = "_self";
}
/* allow the simple case of target="_blank" to be ignored if requested
*/
if ((!(mouse & BROWSER_MOUSE_CLICK_2)) &&
(!((mouse & BROWSER_MOUSE_CLICK_2) &&
(mouse & BROWSER_MOUSE_MOD_2))) &&
(!nsoption_bool(target_blank))) {
/* not a mouse button 2 click
* not a mouse button 1 click with ctrl pressed
* configured to ignore target="_blank" */
if (!strcasecmp(target, "_blank"))
return bw;
}
/* handle reserved keywords */
if (((nsoption_bool(button_2_tab)) &&
(mouse & BROWSER_MOUSE_CLICK_2))||
((!nsoption_bool(button_2_tab)) &&
((mouse & BROWSER_MOUSE_CLICK_1) &&
(mouse & BROWSER_MOUSE_MOD_2))) ||
((nsoption_bool(button_2_tab)) &&
(!strcasecmp(target, "_blank")))) {
/* open in new tab if:
* - button_2 opens in new tab and button_2 was pressed
* OR
* - button_2 doesn't open in new tabs and button_1 was
* pressed with ctrl held
* OR
* - button_2 opens in new tab and the link target is "_blank"
*/
error = browser_window_create(BW_CREATE_TAB |
BW_CREATE_HISTORY |
BW_CREATE_CLONE,
NULL,
NULL,
bw,
&bw_target);
if (error != NSERROR_OK) {
return bw;
}
return bw_target;
} else if (((!nsoption_bool(button_2_tab)) &&
(mouse & BROWSER_MOUSE_CLICK_2)) ||
((nsoption_bool(button_2_tab)) &&
((mouse & BROWSER_MOUSE_CLICK_1) &&
(mouse & BROWSER_MOUSE_MOD_2))) ||
((!nsoption_bool(button_2_tab)) &&
(!strcasecmp(target, "_blank")))) {
/* open in new window if:
* - button_2 doesn't open in new tabs and button_2 was pressed
* OR
* - button_2 opens in new tab and button_1 was pressed with
* ctrl held
* OR
* - button_2 doesn't open in new tabs and the link target is
* "_blank"
*/
error = browser_window_create(BW_CREATE_HISTORY |
BW_CREATE_CLONE,
NULL,
NULL,
bw,
&bw_target);
if (error != NSERROR_OK) {
return bw;
}
return bw_target;
} else if (!strcasecmp(target, "_self")) {
return bw;
} else if (!strcasecmp(target, "_parent")) {
if (bw->parent)
return bw->parent;
return bw;
} else if (!strcasecmp(target, "_top")) {
while (bw->parent)
bw = bw->parent;
return bw;
}
/* find frame according to B.8, ie using the following priorities:
*
* 1) current frame
* 2) closest to front
*/
rdepth = -1;
bw_target = NULL;
for (top = bw; top->parent; top = top->parent);
browser_window_find_target_internal(top, target, 0, bw, &rdepth,
&bw_target);
if (bw_target)
return bw_target;
/* we require a new window using the target name */
if (!nsoption_bool(target_blank))
return bw;
error = browser_window_create(BW_CREATE_CLONE | BW_CREATE_HISTORY,
NULL,
NULL,
bw,
&bw_target);
if (error != NSERROR_OK) {
return bw;
}
/* frame names should begin with an alphabetic character (a-z,A-Z),
* however in practice you get things such as '_new' and '2left'. The
* only real effect this has is when giving out names as it can be
* assumed that an author intended '_new' to create a new nameless
* window (ie '_blank') whereas in the case of '2left' the intention
* was for a new named window. As such we merely special case windows
* that begin with an underscore. */
if (target[0] != '_') {
bw_target->name = strdup(target);
}
return bw_target;
}
/* exported interface documented in netsurf/browser_window.h */
void
browser_window_mouse_track(struct browser_window *bw,
browser_mouse_state mouse,
int x, int y)
{
browser_window_mouse_track_internal(bw,
mouse,
x / bw->scale,
y / bw->scale);
}
/* exported interface documented in netsurf/browser_window.h */
void
browser_window_mouse_click(struct browser_window *bw,
browser_mouse_state mouse,
int x, int y)
{
browser_window_mouse_click_internal(bw,
mouse,
x / bw->scale,
y / bw->scale);
}
/* exported interface documented in netsurf/browser_window.h */
void browser_window_page_drag_start(struct browser_window *bw, int x, int y)
{
assert(bw != NULL);
browser_window_set_drag_type(bw, DRAGGING_PAGE_SCROLL, NULL);
bw->drag.start_x = x;
bw->drag.start_y = y;
if (bw->window != NULL) {
/* Front end window */
guit->window->get_scroll(bw->window,
&bw->drag.start_scroll_x,
&bw->drag.start_scroll_y);
guit->window->event(bw->window, GW_EVENT_SCROLL_START);
} else {
/* Core managed browser window */
bw->drag.start_scroll_x = scrollbar_get_offset(bw->scroll_x);
bw->drag.start_scroll_y = scrollbar_get_offset(bw->scroll_y);
}
}
/* exported interface documented in netsurf/browser_window.h */
bool browser_window_back_available(struct browser_window *bw)
{
if (bw != NULL && bw->internal_nav) {
/* Internal nav, back is possible */
return true;
}
return (bw && bw->history && browser_window_history_back_available(bw));
}
/* exported interface documented in netsurf/browser_window.h */
bool browser_window_forward_available(struct browser_window *bw)
{
return (bw && bw->history && browser_window_history_forward_available(bw));
}
/* exported interface documented in netsurf/browser_window.h */
bool browser_window_reload_available(struct browser_window *bw)
{
return (bw && bw->current_content && !bw->loading_content);
}
/* exported interface documented in netsurf/browser_window.h */
bool browser_window_stop_available(struct browser_window *bw)
{
return (bw && (bw->loading_content ||
(bw->current_content &&
(content_get_status(bw->current_content) !=
CONTENT_STATUS_DONE))));
}
/* exported interface documented in netsurf/browser_window.h */
bool
browser_window_exec(struct browser_window *bw, const char *src, size_t srclen)
{
assert(bw != NULL);
if (!bw->current_content) {
NSLOG(netsurf, DEEPDEBUG, "Unable to exec, no content");
return false;
}
if (content_get_status(bw->current_content) != CONTENT_STATUS_DONE) {
NSLOG(netsurf, DEEPDEBUG, "Unable to exec, content not done");
return false;
}
/* Okay it should be safe, forward the request through to the content
* itself. Only HTML contents currently support executing code
*/
return content_exec(bw->current_content, src, srclen);
}
/* exported interface documented in browser_window.h */
nserror
browser_window_console_log(struct browser_window *bw,
browser_window_console_source src,
const char *msg,
size_t msglen,
browser_window_console_flags flags)
{
browser_window_console_flags log_level = flags & BW_CS_FLAG_LEVEL_MASK;
struct browser_window *root = browser_window_get_root(bw);
assert(msg != NULL);
/* We don't assert msglen > 0, if someone wants to log a real empty
* string then we won't stop them. It does sometimes happen from
* JavaScript for example.
*/
/* bw is the target of the log, but root is where we log it */
NSLOG(netsurf, DEEPDEBUG, "Logging message in %p targetted at %p", root, bw);
NSLOG(netsurf, DEEPDEBUG, "Log came from %s",
((src == BW_CS_INPUT) ? "user input" :
(src == BW_CS_SCRIPT_ERROR) ? "script error" :
(src == BW_CS_SCRIPT_CONSOLE) ? "script console" :
"unknown input location"));
switch (log_level) {
case BW_CS_FLAG_LEVEL_DEBUG:
NSLOG(netsurf, DEBUG, "%.*s", (int)msglen, msg);
break;
case BW_CS_FLAG_LEVEL_LOG:
NSLOG(netsurf, VERBOSE, "%.*s", (int)msglen, msg);
break;
case BW_CS_FLAG_LEVEL_INFO:
NSLOG(netsurf, INFO, "%.*s", (int)msglen, msg);
break;
case BW_CS_FLAG_LEVEL_WARN:
NSLOG(netsurf, WARNING, "%.*s", (int)msglen, msg);
break;
case BW_CS_FLAG_LEVEL_ERROR:
NSLOG(netsurf, ERROR, "%.*s", (int)msglen, msg);
break;
default:
/* Unreachable */
break;
}
guit->window->console_log(root->window, src, msg, msglen, flags);
return NSERROR_OK;
}
/* Exported interface, documented in browser_private.h */
nserror
browser_window__reload_current_parameters(struct browser_window *bw)
{
assert(bw != NULL);
if (bw->current_parameters.post_urlenc != NULL) {
free(bw->current_parameters.post_urlenc);
bw->current_parameters.post_urlenc = NULL;
}
if (bw->current_parameters.post_multipart != NULL) {
fetch_multipart_data_destroy(bw->current_parameters.post_multipart);
bw->current_parameters.post_multipart = NULL;
}
if (bw->current_parameters.url == NULL) {
/* We have never navigated so go to about:blank */
bw->current_parameters.url = nsurl_ref(corestring_nsurl_about_blank);
}
bw->current_parameters.flags &= ~BW_NAVIGATE_HISTORY;
bw->internal_nav = false;
browser_window__free_fetch_parameters(&bw->loading_parameters);
memcpy(&bw->loading_parameters, &bw->current_parameters, sizeof(bw->loading_parameters));
memset(&bw->current_parameters, 0, sizeof(bw->current_parameters));
return browser_window__navigate_internal(bw, &bw->loading_parameters);
}
/* Exported interface, documented in browser_window.h */
browser_window_page_info_state browser_window_get_page_info_state(
const struct browser_window *bw)
{
lwc_string *scheme;
bool match;
assert(bw != NULL);
/* Do we have any content? If not -- UNKNOWN */
if (bw->current_content == NULL) {
return PAGE_STATE_UNKNOWN;
}
scheme = nsurl_get_component(
hlcache_handle_get_url(bw->current_content), NSURL_SCHEME);
/* Is this an internal scheme? */
if ((lwc_string_isequal(scheme, corestring_lwc_about,
&match) == lwc_error_ok &&
(match == true)) ||
(lwc_string_isequal(scheme, corestring_lwc_data,
&match) == lwc_error_ok &&
(match == true)) ||
(lwc_string_isequal(scheme, corestring_lwc_resource,
&match) == lwc_error_ok &&
(match == true))) {
lwc_string_unref(scheme);
return PAGE_STATE_INTERNAL;
}
/* Is this file:/// ? */
if (lwc_string_isequal(scheme, corestring_lwc_file,
&match) == lwc_error_ok &&
match == true) {
lwc_string_unref(scheme);
return PAGE_STATE_LOCAL;
}
/* If not https, from here on down that'd be insecure */
if ((lwc_string_isequal(scheme, corestring_lwc_https,
&match) == lwc_error_ok &&
(match == false))) {
/* Some remote content, not https, therefore insecure */
lwc_string_unref(scheme);
return PAGE_STATE_INSECURE;
}
lwc_string_unref(scheme);
/* Did we have to override this SSL setting? */
if (urldb_get_cert_permissions(hlcache_handle_get_url(bw->current_content))) {
return PAGE_STATE_SECURE_OVERRIDE;
}
/* If we've seen insecure content internally then we need to say so */
if (content_saw_insecure_objects(bw->current_content)) {
return PAGE_STATE_SECURE_ISSUES;
}
/* All is well, return secure state */
return PAGE_STATE_SECURE;
}
/* Exported interface, documented in browser_window.h */
nserror
browser_window_get_ssl_chain(struct browser_window *bw,
struct cert_chain **chain)
{
assert(bw != NULL);
if (bw->current_cert_chain == NULL) {
return NSERROR_NOT_FOUND;
}
*chain = bw->current_cert_chain;
return NSERROR_OK;
}
/* Exported interface, documented in browser_window.h */
int browser_window_get_cookie_count(
const struct browser_window *bw)
{
int count = 0;
char *cookies = urldb_get_cookie(browser_window_access_url(bw), true);
if (cookies == NULL) {
return 0;
}
for (char *c = cookies; *c != '\0'; c++) {
if (*c == ';')
count++;
}
free(cookies);
return count;
}
/* Exported interface, documented in browser_window.h */
nserror browser_window_show_cookies(
const struct browser_window *bw)
{
nserror err;
nsurl *url = browser_window_access_url(bw);
lwc_string *host = nsurl_get_component(url, NSURL_HOST);
const char *string = (host != NULL) ? lwc_string_data(host) : NULL;
err = guit->misc->present_cookies(string);
if (host != NULL) {
lwc_string_unref(host);
}
return err;
}
/* Exported interface, documented in browser_window.h */
nserror browser_window_show_certificates(struct browser_window *bw)
{
nserror res;
nsurl *url;
if (bw->current_cert_chain == NULL) {
return NSERROR_NOT_FOUND;
}
res = cert_chain_to_query(bw->current_cert_chain, &url);
if (res == NSERROR_OK) {
res = browser_window_create(BW_CREATE_HISTORY |
BW_CREATE_FOREGROUND |
BW_CREATE_TAB,
url,
NULL,
bw,
NULL);
nsurl_unref(url);
}
return res;
}
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