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netsurf/desktop/browser_window.c
Vincent Sanders ebe1b05114 improve desktop text search header usage 
remove unecessary inclusion of desktop search header in content
  header which has knock on effect of not having ctype or string
  system headers dragged in unecessarily.

Futher this highlighted use of ctype API where internal ascii
  processing ought to be used.
2020-06-24 23:49:59 +01:00

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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"
/**
* 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)
{
bool handled_scroll = false;
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, if scroll not already handled */
if (handled_scroll == false) {
if (bw->scroll_y && scrollbar_scroll(bw->scroll_y, scry)) {
handled_scroll = true;
}
if (bw->scroll_x && scrollbar_scroll(bw->scroll_x, scrx)) {
handled_scroll = true;
}
}
return handled_scroll;
}
/**
* 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;
x /= bw->scale;
y /= bw->scale;
if (bw == NULL) {
NSLOG(netsurf, INFO, "NULL browser window");
return false;
}
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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