desktop/browser

Bug Summary

File:	desktop/browser_window.c
Warning:	line 907, column 2 Value stored to 'res' is never read
Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name browser_window.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -pic-is-pie -mframe-pointer=none -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/var/lib/jenkins/workspace/scan-build-netsurf -fcoverage-compilation-dir=/var/lib/jenkins/workspace/scan-build-netsurf -resource-dir /usr/lib/llvm-19/lib/clang/19 -isystem /usr/include/mit-krb5 -I . -I include -I build/Linux-gtk2 -I frontends -I content/handlers -D WITH_JPEG -U WITH_PDF_EXPORT -D LIBICONV_PLUG -I /var/lib/jenkins/artifacts-x86_64-linux-gnu/include -I /var/lib/jenkins/artifacts-x86_64-linux-gnu/include -I /var/lib/jenkins/artifacts-x86_64-linux-gnu/include -I /usr/include/x86_64-linux-gnu -I /usr/include/p11-kit-1 -D WITH_CURL -D WITH_OPENSSL -I /var/lib/jenkins/artifacts-x86_64-linux-gnu/include -D UTF8PROC_EXPORTS -D WITH_UTF8PROC -I /usr/include/webp -D WITH_WEBP -I /usr/include/libpng16 -D WITH_PNG -I /var/lib/jenkins/artifacts-x86_64-linux-gnu/include/ -D WITH_BMP -I /var/lib/jenkins/artifacts-x86_64-linux-gnu/include -D WITH_GIF -I /var/lib/jenkins/artifacts-x86_64-linux-gnu/include -D WITH_NS_SVG -I /var/lib/jenkins/artifacts-x86_64-linux-gnu/include -D WITH_NSSPRITE -I /var/lib/jenkins/artifacts-x86_64-linux-gnu/include -D WITH_NSPSL -I /var/lib/jenkins/artifacts-x86_64-linux-gnu/include -D WITH_NSLOG -D NETSURF_UA_FORMAT_STRING="Mozilla/5.0 (%s) NetSurf/%d.%d" -D NETSURF_HOMEPAGE="about:welcome" -D NETSURF_LOG_LEVEL=VERBOSE -D NETSURF_BUILTIN_LOG_FILTER="(level:WARNING || cat:jserrors)" -D NETSURF_BUILTIN_VERBOSE_FILTER="(level:VERBOSE || cat:jserrors)" -D STMTEXPR=1 -I /usr/include/librsvg-2.0 -I /usr/include/glib-2.0 -I /usr/lib/x86_64-linux-gnu/glib-2.0/include -I /usr/include/sysprof-6 -I /usr/include/libmount -I /usr/include/blkid -I /usr/include/gdk-pixbuf-2.0 -I /usr/include/libpng16 -I /usr/include/x86_64-linux-gnu -I /usr/include/webp -I /usr/include/cairo -I /usr/include/freetype2 -I /usr/include/pixman-1 -I /usr/include/harfbuzz -I /usr/include/libxml2 -I /usr/include/pango-1.0 -I /usr/include/fribidi -D WITH_RSVG -I /usr/include/gtk-2.0 -I /usr/lib/x86_64-linux-gnu/gtk-2.0/include -I /usr/include/pango-1.0 -I /usr/include/glib-2.0 -I /usr/lib/x86_64-linux-gnu/glib-2.0/include -I /usr/include/sysprof-6 -I /usr/include/harfbuzz -I /usr/include/freetype2 -I /usr/include/libpng16 -I /usr/include/libmount -I /usr/include/blkid -I /usr/include/fribidi -I /usr/include/cairo -I /usr/include/pixman-1 -I /usr/include/gdk-pixbuf-2.0 -I /usr/include/x86_64-linux-gnu -I /usr/include/webp -I /usr/include/atk-1.0 -I /usr/include/glib-2.0 -I /usr/lib/x86_64-linux-gnu/glib-2.0/include -I /usr/include/sysprof-6 -I /usr/include/glib-2.0 -I /usr/lib/x86_64-linux-gnu/glib-2.0/include -I /usr/include/sysprof-6 -D gtk -D nsgtk -D G_DISABLE_SINGLE_INCLUDES -D G_DISABLE_DEPRECATED -D GTK_DISABLE_SINGLE_INCLUDES -D GTK_MULTIHEAD_SAFE -D PANGO_DISABLE_DEPRECATED -D GTK_DISABLE_DEPRECATED -D _XOPEN_SOURCE=700 -D _POSIX_C_SOURCE=200809L -D _BSD_SOURCE -D _DEFAULT_SOURCE -D _NETBSD_SOURCE -D GTK_RESPATH="/var/lib/jenkins/artifacts-x86_64-linux-gnu/share/netsurf/:./frontends/gtk/res/" -D WITH_GRESOURCE -D DUK_OPT_HAVE_CUSTOM_H -internal-isystem /usr/lib/llvm-19/lib/clang/19/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wwrite-strings -Wno-unused-parameter -Wno-unused-but-set-variable -std=c99 -fconst-strings -ferror-limit 19 -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -vectorize-loops -vectorize-slp -analyzer-display-progress -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /var/lib/jenkins/workspace/scan-build-netsurf/clangScanBuildReports/2025-11-29-173709-2979292-1 -x c desktop/browser_window.c
1/*
* 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/>.
*/

21/**
* \file
*
* Browser window creation and manipulation implementation.
*/

27#include "utils/config.h"

29#include <stdlib.h>
30#include <string.h>
31#include <math.h>
32#include <nsutils/time.h>

34#include "utils/errors.h"
35#include "utils/log.h"
36#include "utils/corestrings.h"
37#include "utils/messages.h"
38#include "utils/nsoption.h"
39#include "netsurf/types.h"
40#include "netsurf/browser_window.h"
41#include "netsurf/window.h"
42#include "netsurf/misc.h"
43#include "netsurf/content.h"
44#include "netsurf/search.h"
45#include "netsurf/plotters.h"
46#include "content/content.h"
47#include "content/hlcache.h"
48#include "content/urldb.h"
49#include "content/content_debug.h"

51#include "html/html.h"
52#include "html/form_internal.h"
53#include "javascript/js.h"

55#include "desktop/browser_private.h"
56#include "desktop/scrollbar.h"
57#include "desktop/gui_internal.h"
58#include "desktop/download.h"
59#include "desktop/frames.h"
60#include "desktop/global_history.h"
61#include "desktop/textinput.h"
62#include "desktop/hotlist.h"
63#include "desktop/knockout.h"
64#include "desktop/browser_history.h"
65#include "desktop/theme.h"

67#ifdef WITH_THEME_INSTALL
68#include "desktop/theme.h"
69#endif

71/**
* smallest scale that can be applied to a browser window
*/
74#define SCALE_MINIMUM0.2 0.2

76/**
* largests scale that can be applied to a browser window
*/
79#define SCALE_MAXIMUM10.0 10.0

81/**
* maximum frame depth
*/
84#define FRAME_DEPTH8 8

86/* Forward declare internal navigation function */
87static nserror browser_window__navigate_internal(
struct browser_window *bw, struct browser_fetch_parameters *params);


91/**
* Close and destroy all child browser window.
*
* \param bw browser window
*/
96static void browser_window_destroy_children(struct browser_window *bw)
97{
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((void*)0);
bw->rows = 0;
bw->cols = 0;
}
109}


112/**
* Free the stored fetch parameters
*
* \param bw The browser window
*/
117static void
118browser_window__free_fetch_parameters(struct browser_fetch_parameters *params)
119{
if (params->url != NULL((void*)0)) {
nsurl_unref(params->url);
params->url = NULL((void*)0);
}
if (params->referrer != NULL((void*)0)) {
nsurl_unref(params->referrer);
params->referrer = NULL((void*)0);
}
if (params->post_urlenc != NULL((void*)0)) {
free(params->post_urlenc);
params->post_urlenc = NULL((void*)0);
}
if (params->post_multipart != NULL((void*)0)) {
fetch_multipart_data_destroy(params->post_multipart);
params->post_multipart = NULL((void*)0);
}
if (params->parent_charset != NULL((void*)0)) {
free(params->parent_charset);
params->parent_charset = NULL((void*)0);
}
140}


143/**
* 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
*/
151static inline void
152browser_window_get_scrollbar_pos(struct browser_window *bw,
		 bool_Bool horizontal,
		 int *x, int *y)
155{
if (horizontal) {
*x = 0;
*y = bw->height - SCROLLBAR_WIDTH16;
} else {
*x = bw->width - SCROLLBAR_WIDTH16;
*y = 0;
}
163}


166/**
* Get browser window horizontal scrollbar widget length
*
* \param bw The browser window
* \return the scrollbar's length
*/
172static inline int get_horz_scrollbar_len(struct browser_window *bw)
173{
if (bw->scroll_y == NULL((void*)0)) {
return bw->width;
}
return bw->width - SCROLLBAR_WIDTH16;
178}


181/**
* Get browser window vertical scrollbar widget length
*
* \param bw The browser window
* \return the scrollbar's length
*/
187static inline int get_vert_scrollbar_len(struct browser_window *bw)
188{
return bw->height;
190}


193/**
* 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)
*/
200static void
201browser_window_set_selection(struct browser_window *bw,
	     bool_Bool selection,
	     bool_Bool read_only)
204{
struct browser_window *top;

assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 207, __extension__ __PRETTY_FUNCTION__
));

top = browser_window_get_root(bw);

assert(top != NULL)((top != ((void*)0)) ? (void) (0) : __assert_fail ("top != NULL"
, "desktop/browser_window.c", 211, __extension__ __PRETTY_FUNCTION__
));

if (bw != top->selection.bw &&
   top->selection.bw != NULL((void*)0) &&
   top->selection.bw->current_content != NULL((void*)0)) {
/* clear old selection */
content_clear_selection(top->selection.bw->current_content);
}

if (selection) {
top->selection.bw = bw;
} else {
top->selection.bw = NULL((void*)0);
}

top->selection.read_only = read_only;
227}


230/**
* 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.
*/
240static nserror
241browser_window_set_scroll(struct browser_window *bw, const struct rect *rect)
242{
if (bw->window != NULL((void*)0)) {
return guit->window->set_scroll(bw->window, rect);
}

if (bw->scroll_x != NULL((void*)0)) {
scrollbar_set(bw->scroll_x, rect->x0, false0);
}
if (bw->scroll_y != NULL((void*)0)) {
scrollbar_set(bw->scroll_y, rect->y0, false0);
}

return NSERROR_OK;
255}


258/**
* 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.
*/
267static nserror
268browser_window__get_contextual_content(struct browser_window *bw,
		       int x, int y,
		       struct browser_window_features *data)
271{
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((void*)0)) {
/* Pass request to content */
ret = content_get_contextual_content(bw->current_content,
				     x, y, data);
data->main = bw->current_content;
}

return ret;
314}


317/**
* implements the download operation of a window navigate
*/
320static nserror
321browser_window_download(struct browser_window *bw,
	nsurl *url,
	nsurl *nsref,
	uint32_t fetch_flags,
	bool_Bool fetch_is_post,
	llcache_post_data *post)
327{
llcache_handle *l;
struct browser_window *root;
nserror error;

root = browser_window_get_root(bw);
assert(root != NULL)((root != ((void*)0)) ? (void) (0) : __assert_fail ("root != NULL"
, "desktop/browser_window.c", 333, __extension__ __PRETTY_FUNCTION__
));

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((void*)0),
			NULL((void*)0), NULL((void*)0), &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)do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 345
, }; nslog__log(&_nslog_ctx, "Failed to fetch download: %d"
, error); } } while(0);
} else {
error = download_context_create(l, root->window);
if (error != NSERROR_OK) {
	NSLOG(netsurf, INFO,do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 350
, }; nslog__log(&_nslog_ctx, "Failed creating download context: %d"
, error); } } while(0)
	      "Failed creating download context: %d", error)do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 350
, }; nslog__log(&_nslog_ctx, "Failed creating download context: %d"
, error); } } while(0);
	llcache_handle_abort(l);
	llcache_handle_release(l);
}
}

return error;
357}


360/**
* recursively check browser windows for activity
*
* \param bw browser window to start checking from.
*/
365static bool_Bool browser_window_check_throbber(struct browser_window *bw)
366{
int children, index;

if (bw->throbbing)
return true1;

if (bw->children) {
children = bw->rows * bw->cols;
for (index = 0; index < children; index++) {
	if (browser_window_check_throbber(&bw->children[index]))
		return true1;
}
}

if (bw->iframes) {
for (index = 0; index < bw->iframe_count; index++) {
	if (browser_window_check_throbber(&bw->iframes[index]))
		return true1;
}
}

return false0;
388}


391/**
* Start the busy indicator.
*
* \param bw browser window
*/
396static nserror browser_window_start_throbber(struct browser_window *bw)
397{
bw->throbbing = true1;

while (bw->parent)
bw = bw->parent;

return guit->window->event(bw->window, GW_EVENT_START_THROBBER);
404}


407/**
* Stop the busy indicator.
*
* \param bw browser window
*/
412static nserror browser_window_stop_throbber(struct browser_window *bw)
413{
nserror res = NSERROR_OK;

bw->throbbing = false0;

while (bw->parent) {
bw = bw->parent;
}

if (!browser_window_check_throbber(bw)) {
res = guit->window->event(bw->window, GW_EVENT_STOP_THROBBER);
}
return res;
426}


429/**
* 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.
*/
437static nserror
438browser_window_favicon_callback(hlcache_handle *c,
		const hlcache_event *event,
		void *pw)
441{
struct browser_window *bw = pw;

switch (event->type) {
case CONTENT_MSG_DONE:
if (bw->favicon.current != NULL((void*)0)) {
	content_close(bw->favicon.current);
	hlcache_handle_release(bw->favicon.current);
}

bw->favicon.current = c;
bw->favicon.loading = NULL((void*)0);

/* 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((void*)0);
} else if (c == bw->favicon.current) {
	bw->favicon.current = NULL((void*)0);
}

hlcache_handle_release(c);

if (bw->favicon.failed == false0) {
	nsurl *nsref = NULL((void*)0);
	nsurl *nsurl;
	nserror error;

	bw->favicon.failed = true1;

	error = nsurl_create("resource:favicon.ico", &nsurl);
	if (error != NSERROR_OK) {
		NSLOG(netsurf, INFO,do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 481
, }; nslog__log(&_nslog_ctx, "Unable to create default location url"
); } } while(0)
		      "Unable to create default location url")do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 481
, }; nslog__log(&_nslog_ctx, "Unable to create default location url"
); } } while(0);
	} else {
		hlcache_handle_retrieve(nsurl,
					HLCACHE_RETRIEVE_SNIFF_TYPE,
					nsref, NULL((void*)0),
					browser_window_favicon_callback,
					bw, NULL((void*)0), CONTENT_IMAGE,
					&bw->favicon.loading);

		nsurl_unref(nsurl);
	}

}
break;

default:
break;

}
return NSERROR_OK;
501}


504/**
* 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.
*/
511static nserror
512browser_window_update_favicon(hlcache_handle *c,
	      struct browser_window *bw,
	      struct content_rfc5988_link *link)
515{
nsurl *nsref = NULL((void*)0);
nsurl *nsurl;
nserror res;

assert(c != NULL)((c != ((void*)0)) ? (void) (0) : __assert_fail ("c != NULL",
 "desktop/browser_window.c", 520, __extension__ __PRETTY_FUNCTION__
));
assert(bw !=NULL)((bw !=((void*)0)) ? (void) (0) : __assert_fail ("bw !=NULL",
 "desktop/browser_window.c", 521, __extension__ __PRETTY_FUNCTION__
));

if (bw->window == NULL((void*)0)) {
/* Not top-level browser window; not interested */
return NSERROR_OK;
}

/* already fetching the favicon - use that */
if (bw->favicon.loading != NULL((void*)0)) {
return NSERROR_OK;
}

bw->favicon.failed = false0;

if (link == NULL((void*)0)) {
/* Look for "icon" */
link = content_find_rfc5988_link(c, corestring_lwc_icon);
}

if (link == NULL((void*)0)) {
/* Look for "shortcut icon" */
link = content_find_rfc5988_link(c, corestring_lwc_shortcut_icon);
}

if (link == NULL((void*)0)) {
lwc_string *scheme;
bool_Bool speculative_default = false0;
bool_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,({ lwc_error __lwc_err = lwc_error_ok; lwc_string *__lwc_str1
 = (scheme); lwc_string *__lwc_str2 = (corestring_lwc_http); _Bool
 *__lwc_ret = (&match); if (__lwc_str1->insensitive ==
 ((void*)0)) { __lwc_err = lwc__intern_caseless_string(__lwc_str1
); } if (__lwc_err == lwc_error_ok && __lwc_str2->
insensitive == ((void*)0)) { __lwc_err = lwc__intern_caseless_string
(__lwc_str2); } if (__lwc_err == lwc_error_ok) *__lwc_ret = (
__lwc_str1->insensitive == __lwc_str2->insensitive); __lwc_err
; })
				 corestring_lwc_http,({ lwc_error __lwc_err = lwc_error_ok; lwc_string *__lwc_str1
 = (scheme); lwc_string *__lwc_str2 = (corestring_lwc_http); _Bool
 *__lwc_ret = (&match); if (__lwc_str1->insensitive ==
 ((void*)0)) { __lwc_err = lwc__intern_caseless_string(__lwc_str1
); } if (__lwc_err == lwc_error_ok && __lwc_str2->
insensitive == ((void*)0)) { __lwc_err = lwc__intern_caseless_string
(__lwc_str2); } if (__lwc_err == lwc_error_ok) *__lwc_ret = (
__lwc_str1->insensitive == __lwc_str2->insensitive); __lwc_err
; })
				 &match)({ lwc_error __lwc_err = lwc_error_ok; lwc_string *__lwc_str1
 = (scheme); lwc_string *__lwc_str2 = (corestring_lwc_http); _Bool
 *__lwc_ret = (&match); if (__lwc_str1->insensitive ==
 ((void*)0)) { __lwc_err = lwc__intern_caseless_string(__lwc_str1
); } if (__lwc_err == lwc_error_ok && __lwc_str2->
insensitive == ((void*)0)) { __lwc_err = lwc__intern_caseless_string
(__lwc_str2); } if (__lwc_err == lwc_error_ok) *__lwc_ret = (
__lwc_str1->insensitive == __lwc_str2->insensitive); __lwc_err
; }) == lwc_error_ok &&
     match) ||
    (lwc_string_caseless_isequal(scheme,({ lwc_error __lwc_err = lwc_error_ok; lwc_string *__lwc_str1
 = (scheme); lwc_string *__lwc_str2 = (corestring_lwc_https);
 _Bool *__lwc_ret = (&match); if (__lwc_str1->insensitive
 == ((void*)0)) { __lwc_err = lwc__intern_caseless_string(__lwc_str1
); } if (__lwc_err == lwc_error_ok && __lwc_str2->
insensitive == ((void*)0)) { __lwc_err = lwc__intern_caseless_string
(__lwc_str2); } if (__lwc_err == lwc_error_ok) *__lwc_ret = (
__lwc_str1->insensitive == __lwc_str2->insensitive); __lwc_err
; })
				 corestring_lwc_https,({ lwc_error __lwc_err = lwc_error_ok; lwc_string *__lwc_str1
 = (scheme); lwc_string *__lwc_str2 = (corestring_lwc_https);
 _Bool *__lwc_ret = (&match); if (__lwc_str1->insensitive
 == ((void*)0)) { __lwc_err = lwc__intern_caseless_string(__lwc_str1
); } if (__lwc_err == lwc_error_ok && __lwc_str2->
insensitive == ((void*)0)) { __lwc_err = lwc__intern_caseless_string
(__lwc_str2); } if (__lwc_err == lwc_error_ok) *__lwc_ret = (
__lwc_str1->insensitive == __lwc_str2->insensitive); __lwc_err
; })
				 &match)({ lwc_error __lwc_err = lwc_error_ok; lwc_string *__lwc_str1
 = (scheme); lwc_string *__lwc_str2 = (corestring_lwc_https);
 _Bool *__lwc_ret = (&match); if (__lwc_str1->insensitive
 == ((void*)0)) { __lwc_err = lwc__intern_caseless_string(__lwc_str1
); } if (__lwc_err == lwc_error_ok && __lwc_str2->
insensitive == ((void*)0)) { __lwc_err = lwc__intern_caseless_string
(__lwc_str2); } if (__lwc_err == lwc_error_ok) *__lwc_ret = (
__lwc_str1->insensitive == __lwc_str2->insensitive); __lwc_err
; }) == lwc_error_ok &&
     match)) {
	speculative_default = true1;
}

lwc_string_unref(scheme){ lwc_string *__lwc_s = (scheme); if (__lwc_s != ((void*)0)) {
 __lwc_s->refcnt--; if ((__lwc_s->refcnt == 0) || ((__lwc_s
->refcnt == 1) && (__lwc_s->insensitive == __lwc_s
))) lwc_string_destroy(__lwc_s); } };

if (speculative_default) {
	/* no favicon via link, try for the default location */
	res = nsurl_join(nsurl, "/favicon.ico", &nsurl);
} else {
	bw->favicon.failed = true1;
	res = nsurl_create("resource:favicon.ico", &nsurl);
}
if (res != NSERROR_OK) {
	NSLOG(netsurf, INFO,do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 578
, }; nslog__log(&_nslog_ctx, "Unable to create default location url"
); } } while(0)
	      "Unable to create default location url")do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 578
, }; nslog__log(&_nslog_ctx, "Unable to create default location url"
); } } while(0);
	return res;
}
} else {
nsurl = nsurl_ref(link->href);
}

if (link == NULL((void*)0)) {
NSLOG(netsurf, INFO,do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 588
, }; nslog__log(&_nslog_ctx, "fetching general favicon from '%s'"
, nsurl_access(nsurl)); } } while(0)
      "fetching general favicon from '%s'",do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 588
, }; nslog__log(&_nslog_ctx, "fetching general favicon from '%s'"
, nsurl_access(nsurl)); } } while(0)
      nsurl_access(nsurl))do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 588
, }; nslog__log(&_nslog_ctx, "fetching general favicon from '%s'"
, nsurl_access(nsurl)); } } while(0);
} else {
NSLOG(netsurf, INFO,do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 593
, }; nslog__log(&_nslog_ctx, "fetching favicon rel:%s '%s'"
, ({((link->rel != ((void*)0)) ? (void) (0) : __assert_fail
 ("link->rel != NULL", "desktop/browser_window.c", 593, __extension__
 __PRETTY_FUNCTION__)); (const char *)((link->rel)+1);}), nsurl_access
(nsurl)); } } while(0)
      "fetching favicon rel:%s '%s'",do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 593
, }; nslog__log(&_nslog_ctx, "fetching favicon rel:%s '%s'"
, ({((link->rel != ((void*)0)) ? (void) (0) : __assert_fail
 ("link->rel != NULL", "desktop/browser_window.c", 593, __extension__
 __PRETTY_FUNCTION__)); (const char *)((link->rel)+1);}), nsurl_access
(nsurl)); } } while(0)
      lwc_string_data(link->rel),do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 593
, }; nslog__log(&_nslog_ctx, "fetching favicon rel:%s '%s'"
, ({((link->rel != ((void*)0)) ? (void) (0) : __assert_fail
 ("link->rel != NULL", "desktop/browser_window.c", 593, __extension__
 __PRETTY_FUNCTION__)); (const char *)((link->rel)+1);}), nsurl_access
(nsurl)); } } while(0)
      nsurl_access(nsurl))do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 593
, }; nslog__log(&_nslog_ctx, "fetching favicon rel:%s '%s'"
, ({((link->rel != ((void*)0)) ? (void) (0) : __assert_fail
 ("link->rel != NULL", "desktop/browser_window.c", 593, __extension__
 __PRETTY_FUNCTION__)); (const char *)((link->rel)+1);}), nsurl_access
(nsurl)); } } while(0);
}

res = hlcache_handle_retrieve(nsurl,
		      HLCACHE_RETRIEVE_SNIFF_TYPE,
		      nsref,
		      NULL((void*)0),
		      browser_window_favicon_callback,
		      bw,
		      NULL((void*)0),
		      CONTENT_IMAGE,
		      &bw->favicon.loading);

nsurl_unref(nsurl);

return res;
609}


612/**
* Handle meta http-equiv refresh time elapsing by loading a new page.
*
* \param p browser window to refresh with new page
*/
617static void browser_window_refresh(void *p)
618{
struct browser_window *bw = p;
nsurl *url;
nsurl *refresh;
hlcache_handle *parent = NULL((void*)0);
enum browser_window_nav_flags flags = BW_NAVIGATE_UNVERIFIABLE;

assert(bw->current_content != NULL &&((bw->current_content != ((void*)0) && (content_get_status
(bw->current_content) == CONTENT_STATUS_READY || content_get_status
(bw->current_content) == CONTENT_STATUS_DONE)) ? (void) (0
) : __assert_fail ("bw->current_content != NULL && (content_get_status(bw->current_content) == CONTENT_STATUS_READY || content_get_status(bw->current_content) == CONTENT_STATUS_DONE)"
, "desktop/browser_window.c", 629, __extension__ __PRETTY_FUNCTION__
))
      (content_get_status(bw->current_content) ==((bw->current_content != ((void*)0) && (content_get_status
(bw->current_content) == CONTENT_STATUS_READY || content_get_status
(bw->current_content) == CONTENT_STATUS_DONE)) ? (void) (0
) : __assert_fail ("bw->current_content != NULL && (content_get_status(bw->current_content) == CONTENT_STATUS_READY || content_get_status(bw->current_content) == CONTENT_STATUS_DONE)"
, "desktop/browser_window.c", 629, __extension__ __PRETTY_FUNCTION__
))
CONTENT_STATUS_READY ||((bw->current_content != ((void*)0) && (content_get_status
(bw->current_content) == CONTENT_STATUS_READY || content_get_status
(bw->current_content) == CONTENT_STATUS_DONE)) ? (void) (0
) : __assert_fail ("bw->current_content != NULL && (content_get_status(bw->current_content) == CONTENT_STATUS_READY || content_get_status(bw->current_content) == CONTENT_STATUS_DONE)"
, "desktop/browser_window.c", 629, __extension__ __PRETTY_FUNCTION__
))
content_get_status(bw->current_content) ==((bw->current_content != ((void*)0) && (content_get_status
(bw->current_content) == CONTENT_STATUS_READY || content_get_status
(bw->current_content) == CONTENT_STATUS_DONE)) ? (void) (0
) : __assert_fail ("bw->current_content != NULL && (content_get_status(bw->current_content) == CONTENT_STATUS_READY || content_get_status(bw->current_content) == CONTENT_STATUS_DONE)"
, "desktop/browser_window.c", 629, __extension__ __PRETTY_FUNCTION__
))
CONTENT_STATUS_DONE))((bw->current_content != ((void*)0) && (content_get_status
(bw->current_content) == CONTENT_STATUS_READY || content_get_status
(bw->current_content) == CONTENT_STATUS_DONE)) ? (void) (0
) : __assert_fail ("bw->current_content != NULL && (content_get_status(bw->current_content) == CONTENT_STATUS_READY || content_get_status(bw->current_content) == CONTENT_STATUS_DONE)"
, "desktop/browser_window.c", 629, __extension__ __PRETTY_FUNCTION__
));

/* 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((void*)0))
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((void*)0)) || (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((void*)0)) {
flags &= ~BW_NAVIGATE_UNVERIFIABLE;
} else {
parent = bw->current_content;
}

browser_window_navigate(bw,
		refresh,
		url,
		flags,
		NULL((void*)0),
		NULL((void*)0),
		parent);

666}


669/**
* Transfer the loading_content to a new download window.
*/
672static void
673browser_window_convert_to_download(struct browser_window *bw,
		   llcache_handle *stream)
675{
struct browser_window *root = browser_window_get_root(bw);
nserror error;

assert(root != NULL)((root != ((void*)0)) ? (void) (0) : __assert_fail ("root != NULL"
, "desktop/browser_window.c", 679, __extension__ __PRETTY_FUNCTION__
));

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((void*)0);

browser_window_stop_throbber(bw);
692}


695/**
* scroll to a fragment if present
*
* \param bw browser window
* \return true if the scroll was sucessful
*/
701static bool_Bool frag_scroll(struct browser_window *bw)
702{
struct rect rect;

if (bw->frag_id == NULL((void*)0)) {
return false0;
}

if (!html_get_id_offset(bw->current_content,
		bw->frag_id,
		&rect.x0,
		&rect.y0)) {
return false0;
}

rect.x1 = rect.x0;
rect.y1 = rect.y0;
if (browser_window_set_scroll(bw, &rect) == NSERROR_OK) {
if (bw->current_content != NULL((void*)0) &&
    bw->history != NULL((void*)0) &&
    bw->history->current != NULL((void*)0)) {
	browser_window_history_update(bw, bw->current_content);
}
return true1;
}
return false0;
727}


730/**
* Redraw browser window, set extent to content, and update title.
*
* \param  bw		  browser_window
* \param  scroll_to_top  move view to top of page
*/
736static void browser_window_update(struct browser_window *bw, bool_Bool scroll_to_top)
737{
static const struct rect zrect = {
.x0 = 0,
.y0 = 0,
.x1 = 0,
.y1 = 0
};

if (bw->current_content == NULL((void*)0)) {
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((void*)0));

break;

case BROWSER_WINDOW_IFRAME:
/* Internal iframe browser window */
assert(bw->parent != NULL)((bw->parent != ((void*)0)) ? (void) (0) : __assert_fail (
"bw->parent != NULL", "desktop/browser_window.c", 772, __extension__
 __PRETTY_FUNCTION__));
assert(bw->parent->current_content != NULL)((bw->parent->current_content != ((void*)0)) ? (void) (
0) : __assert_fail ("bw->parent->current_content != NULL"
, "desktop/browser_window.c", 773, __extension__ __PRETTY_FUNCTION__
));

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;
}
816}


819/**
* handle message for content ready on browser window
*/
822static nserror browser_window_content_ready(struct browser_window *bw)
1
[debug] analyzing from browser_window_content_ready→
823{
int width, height;
nserror res = NSERROR_OK;

/* close and release the current window content */
if (bw->current_content != NULL((void*)0)) {
content_close(bw->current_content);
hlcache_handle_release(bw->current_content);
}

bw->current_content = bw->loading_content;
bw->loading_content = NULL((void*)0);

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((void*)0);
}

/* 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, false0, 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, false0);

if (bw->window != NULL((void*)0)) {
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, true1);
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);
2
←
Value stored to 'res' is never read

/* 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;
919}


922/**
* handle message for content done on browser window
*/
925static nserror
926browser_window_content_done(struct browser_window *bw)
927{
float sx, sy;
struct rect rect;
int scrollx;
int scrolly;

if (bw->window == NULL((void*)0)) {
/* Updated browser window's scrollbars. */
/**
 * \todo update browser window scrollbars before CONTENT_MSG_DONE
 */
browser_window_reformat(bw, true1, bw->width, bw->height);
browser_window_handle_scrollbars(bw);
}

browser_window_update(bw, false0);
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((void*)0));

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,do { if (NSLOG_LEVEL_WARNING >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_WARNING, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 955
, }; nslog__log(&_nslog_ctx, "Unable to set browser scroll offsets to %d by %d"
, scrollx, scrolly); } } while(0)
	      "Unable to set browser scroll offsets to %d by %d",do { if (NSLOG_LEVEL_WARNING >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_WARNING, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 955
, }; nslog__log(&_nslog_ctx, "Unable to set browser scroll offsets to %d by %d"
, scrollx, scrolly); } } while(0)
	      scrollx, scrolly)do { if (NSLOG_LEVEL_WARNING >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_WARNING, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 955
, }; nslog__log(&_nslog_ctx, "Unable to set browser scroll offsets to %d by %d"
, scrollx, scrolly); } } while(0);
}
}

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;
970}


973/**
* Handle query responses from SSL requests
*/
976static nserror
977browser_window__handle_ssl_query_response(bool_Bool proceed, void *pw)
978{
struct browser_window *bw = (struct browser_window *)pw;

/* If we're in the process of loading, stop the load */
if (bw->loading_content != NULL((void*)0)) {
/* We had a loading content (maybe auth page?) */
browser_window_stop(bw);
browser_window_remove_caret(bw, false0);
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, true1);

/* And then we navigate to the original loading parameters */
bw->internal_nav = false0;

return browser_window__navigate_internal(bw, &bw->loading_parameters);
1006}


1009/**
* 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.
*/
1017static nserror
1018browser_window__unpack_userpass(const char *userpass,
		char **username_out,
		char **password_out)
1021{
const char *tmp;
char *username;
char *password;
size_t len;

if (userpass == NULL((void*)0)) {
username = malloc(1);
password = malloc(1);
if (username == NULL((void*)0) || password == NULL((void*)0)) {
	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((void*)0)) {
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((void*)0) || password == NULL((void*)0)) {
	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;
1066}


1069/**
* 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.
*/
1078static nserror
1079browser_window__build_userpass(const char *username,
	       const char *password,
	       char **userpass_out)
1082{
char *userpass;
size_t len;

len = strlen(username) + 1 + strlen(password) + 1;

userpass = malloc(len);
if (userpass == NULL((void*)0)) {
return NSERROR_NOMEM;
}

snprintf(userpass, len, "%s:%s", username, password);

*userpass_out = userpass;
return NSERROR_OK;
1097}


1100/**
* Handle a response from the UI when prompted for credentials
*/
1103static nserror
1104browser_window__handle_userpass_response(nsurl *url,
			 const char *realm,
			 const char *username,
			 const char *password,
			 void *pw)
1109{
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((void*)0)) {
/* We had a loading content (maybe auth page?) */
browser_window_stop(bw);
browser_window_remove_caret(bw, false0);
browser_window_destroy_children(bw);
browser_window_destroy_iframes(bw);
}
bw->internal_nav = false0;
return browser_window__navigate_internal(bw, &bw->loading_parameters);
1137}


1140/**
* Handle login request (BAD_AUTH) during fetch
*
*/
1144static nserror
1145browser_window__handle_login(struct browser_window *bw,
	     const char *realm,
	     nsurl *url) {
char *username = NULL((void*)0), *password = NULL((void*)0);
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 = true1;
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((void*)0)) {
free(username);
}
if (password != NULL((void*)0)) {
free(password);
}
browser_window__free_fetch_parameters(&params);
return err;
1218}


1221/**
* Handle a certificate verification request (BAD_CERTS) during a fetch
*/
1224static nserror
1225browser_window__handle_bad_certs(struct browser_window *bw,
		 nsurl *url)
1227{
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((void*)0);

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((void*)0)) {
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 = true1;
err = browser_window__navigate_internal(bw, &params);
if (err != NSERROR_OK) {
goto out;
}

out:
browser_window__free_fetch_parameters(&params);
if (chainurl != NULL((void*)0))
nsurl_unref(chainurl);
return err;
1290}


1293/**
* Handle a timeout during a fetch
*/
1296static nserror
1297browser_window__handle_timeout(struct browser_window *bw, nsurl *url)
1298{
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 = true1;
err = browser_window__navigate_internal(bw, &params);
if (err != NSERROR_OK) {
goto out;
}

out:
browser_window__free_fetch_parameters(&params);
return err;
1325}


1328/**
* Handle non specific errors during a fetch
*/
1331static nserror
1332browser_window__handle_fetcherror(struct browser_window *bw,
		  const char *reason,
		  nsurl *url)
1335{
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 = true1;
err = browser_window__navigate_internal(bw, &params);
if (err != NSERROR_OK) {
goto out;
}

out:
browser_window__free_fetch_parameters(&params);
return err;
1369}


1372/**
* Handle errors during content fetch
*/
1375static nserror
1376browser_window__handle_error(struct browser_window *bw,
	     hlcache_handle *c,
	     const hlcache_event *event)
1379{
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)((code != NSERROR_OK) ? (void) (0) : __assert_fail ("code != NSERROR_OK"
, "desktop/browser_window.c", 1386, __extension__ __PRETTY_FUNCTION__
));

if (message == NULL((void*)0)) {
message = messages_get_errorcode(code);
} else {
message = messages_get(message);
}

if (c == bw->loading_content) {
bw->loading_content = NULL((void*)0);
} else if (c == bw->current_content) {
bw->current_content = NULL((void*)0);
browser_window_remove_caret(bw, false0);
}

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;
1422}


1425/**
* 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.
*/
1431static inline nserror
1432browser_window_refresh_url_bar_internal(struct browser_window *bw, nsurl *url)
1433{
assert(bw)((bw) ? (void) (0) : __assert_fail ("bw", "desktop/browser_window.c"
, 1434, __extension__ __PRETTY_FUNCTION__));
assert(url)((url) ? (void) (0) : __assert_fail ("url", "desktop/browser_window.c"
, 1435, __extension__ __PRETTY_FUNCTION__));

if ((bw->parent != NULL((void*)0)) || (bw->window == NULL((void*)0))) {
/* Not root window or no gui window so do not set a URL */
return NSERROR_OK;
}

return guit->window->set_url(bw->window, url);
1443}


1446/**
* Browser window content event callback handler.
*/
1449static nserror
1450browser_window_callback(hlcache_handle *c, const hlcache_event *event, void *pw)
1451{
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)((bw->loading_content == c) ? (void) (0) : __assert_fail (
"bw->loading_content == c", "desktop/browser_window.c", 1471
, __extension__ __PRETTY_FUNCTION__));

browser_window_convert_to_download(bw, event->data.download);

if (bw->current_content != NULL((void*)0)) {
	browser_window_refresh_url_bar(bw);
}
break;

case CONTENT_MSG_LOADING:
assert(bw->loading_content == c)((bw->loading_content == c) ? (void) (0) : __assert_fail (
"bw->loading_content == c", "desktop/browser_window.c", 1481
, __extension__ __PRETTY_FUNCTION__));

1483#ifdef WITH_THEME_INSTALL
if (content_get_type(c) == CONTENT_THEME) {
	theme_install_start(c);
	bw->loading_content = NULL((void*)0);
	browser_window_stop_throbber(bw);
} else
1489#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)((bw->loading_content == c) ? (void) (0) : __assert_fail (
"bw->loading_content == c", "desktop/browser_window.c", 1498
, __extension__ __PRETTY_FUNCTION__));

res = browser_window_content_ready(bw);
break;

case CONTENT_MSG_DONE:
assert(bw->current_content == c)((bw->current_content == c) ? (void) (0) : __assert_fail (
"bw->current_content == c", "desktop/browser_window.c", 1504
, __extension__ __PRETTY_FUNCTION__));

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((void*)0)) {
	/* Object content's status text updated */
	const char *status = NULL((void*)0);
	if (bw->loading_content != NULL((void*)0)) {
		/* Give preference to any loading content */
		status = content_get_status_message(
					bw->loading_content);
	}

	if (status == NULL((void*)0)) {
		status = content_get_status_message(c);
	}

	if (status != NULL((void*)0)) {
		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, true1);

if (!(event->data.background)) {
	/* Reformatted content should be redrawn */
	browser_window_update(bw, false0);
}
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_Bool match;

	/* Handle "icon" and "shortcut icon" */
	if ((lwc_string_caseless_isequal(({ lwc_error __lwc_err = lwc_error_ok; lwc_string *__lwc_str1
 = (event->data.rfc5988_link->rel); lwc_string *__lwc_str2
 = (corestring_lwc_icon); _Bool *__lwc_ret = (&match); if
 (__lwc_str1->insensitive == ((void*)0)) { __lwc_err = lwc__intern_caseless_string
(__lwc_str1); } if (__lwc_err == lwc_error_ok && __lwc_str2
->insensitive == ((void*)0)) { __lwc_err = lwc__intern_caseless_string
(__lwc_str2); } if (__lwc_err == lwc_error_ok) *__lwc_ret = (
__lwc_str1->insensitive == __lwc_str2->insensitive); __lwc_err
; })
					 event->data.rfc5988_link->rel,({ lwc_error __lwc_err = lwc_error_ok; lwc_string *__lwc_str1
 = (event->data.rfc5988_link->rel); lwc_string *__lwc_str2
 = (corestring_lwc_icon); _Bool *__lwc_ret = (&match); if
 (__lwc_str1->insensitive == ((void*)0)) { __lwc_err = lwc__intern_caseless_string
(__lwc_str1); } if (__lwc_err == lwc_error_ok && __lwc_str2
->insensitive == ((void*)0)) { __lwc_err = lwc__intern_caseless_string
(__lwc_str2); } if (__lwc_err == lwc_error_ok) *__lwc_ret = (
__lwc_str1->insensitive == __lwc_str2->insensitive); __lwc_err
; })
					 corestring_lwc_icon,({ lwc_error __lwc_err = lwc_error_ok; lwc_string *__lwc_str1
 = (event->data.rfc5988_link->rel); lwc_string *__lwc_str2
 = (corestring_lwc_icon); _Bool *__lwc_ret = (&match); if
 (__lwc_str1->insensitive == ((void*)0)) { __lwc_err = lwc__intern_caseless_string
(__lwc_str1); } if (__lwc_err == lwc_error_ok && __lwc_str2
->insensitive == ((void*)0)) { __lwc_err = lwc__intern_caseless_string
(__lwc_str2); } if (__lwc_err == lwc_error_ok) *__lwc_ret = (
__lwc_str1->insensitive == __lwc_str2->insensitive); __lwc_err
; })
					 &match)({ lwc_error __lwc_err = lwc_error_ok; lwc_string *__lwc_str1
 = (event->data.rfc5988_link->rel); lwc_string *__lwc_str2
 = (corestring_lwc_icon); _Bool *__lwc_ret = (&match); if
 (__lwc_str1->insensitive == ((void*)0)) { __lwc_err = lwc__intern_caseless_string
(__lwc_str1); } if (__lwc_err == lwc_error_ok && __lwc_str2
->insensitive == ((void*)0)) { __lwc_err = lwc__intern_caseless_string
(__lwc_str2); } if (__lwc_err == lwc_error_ok) *__lwc_ret = (
__lwc_str1->insensitive == __lwc_str2->insensitive); __lwc_err
; }) == lwc_error_ok && match) ||
	    (lwc_string_caseless_isequal(({ lwc_error __lwc_err = lwc_error_ok; lwc_string *__lwc_str1
 = (event->data.rfc5988_link->rel); lwc_string *__lwc_str2
 = (corestring_lwc_shortcut_icon); _Bool *__lwc_ret = (&match
); if (__lwc_str1->insensitive == ((void*)0)) { __lwc_err =
 lwc__intern_caseless_string(__lwc_str1); } if (__lwc_err == lwc_error_ok
 && __lwc_str2->insensitive == ((void*)0)) { __lwc_err
 = lwc__intern_caseless_string(__lwc_str2); } if (__lwc_err ==
 lwc_error_ok) *__lwc_ret = (__lwc_str1->insensitive == __lwc_str2
->insensitive); __lwc_err; })
					 event->data.rfc5988_link->rel,({ lwc_error __lwc_err = lwc_error_ok; lwc_string *__lwc_str1
 = (event->data.rfc5988_link->rel); lwc_string *__lwc_str2
 = (corestring_lwc_shortcut_icon); _Bool *__lwc_ret = (&match
); if (__lwc_str1->insensitive == ((void*)0)) { __lwc_err =
 lwc__intern_caseless_string(__lwc_str1); } if (__lwc_err == lwc_error_ok
 && __lwc_str2->insensitive == ((void*)0)) { __lwc_err
 = lwc__intern_caseless_string(__lwc_str2); } if (__lwc_err ==
 lwc_error_ok) *__lwc_ret = (__lwc_str1->insensitive == __lwc_str2
->insensitive); __lwc_err; })
					 corestring_lwc_shortcut_icon,({ lwc_error __lwc_err = lwc_error_ok; lwc_string *__lwc_str1
 = (event->data.rfc5988_link->rel); lwc_string *__lwc_str2
 = (corestring_lwc_shortcut_icon); _Bool *__lwc_ret = (&match
); if (__lwc_str1->insensitive == ((void*)0)) { __lwc_err =
 lwc__intern_caseless_string(__lwc_str1); } if (__lwc_err == lwc_error_ok
 && __lwc_str2->insensitive == ((void*)0)) { __lwc_err
 = lwc__intern_caseless_string(__lwc_str2); } if (__lwc_err ==
 lwc_error_ok) *__lwc_ret = (__lwc_str1->insensitive == __lwc_str2
->insensitive); __lwc_err; })
					 &match)({ lwc_error __lwc_err = lwc_error_ok; lwc_string *__lwc_str1
 = (event->data.rfc5988_link->rel); lwc_string *__lwc_str2
 = (corestring_lwc_shortcut_icon); _Bool *__lwc_ret = (&match
); if (__lwc_str1->insensitive == ((void*)0)) { __lwc_err =
 lwc__intern_caseless_string(__lwc_str1); } if (__lwc_err == lwc_error_ok
 && __lwc_str2->insensitive == ((void*)0)) { __lwc_err
 = lwc__intern_caseless_string(__lwc_str2); } if (__lwc_err ==
 lwc_error_ok) *__lwc_ret = (__lwc_str1->insensitive == __lwc_str2
->insensitive); __lwc_err; }) == 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)((bw->loading_content == c) ? (void) (0) : __assert_fail (
"bw->loading_content == c", "desktop/browser_window.c", 1605
, __extension__ __PRETTY_FUNCTION__));

	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((void*)0)) {
		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, false0);
	break;
case CONTENT_CARET_HIDE:
	browser_window_remove_caret(bw, true1);
	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;
1808}


1811/**
* internal scheduled reformat callback.
*
* scheduled reformat callback to allow reformats from unthreaded context.
*
* \param vbw The browser window to be reformatted
*/
1818static void scheduled_reformat(void *vbw)
1819{
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, false0, width, height);
}
1829}

1831/* exported interface documented in desktop/browser_private.h */
1832nserror browser_window_destroy_internal(struct browser_window *bw)
1833{
assert(bw)((bw) ? (void) (0) : __assert_fail ("bw", "desktop/browser_window.c"
, 1834, __extension__ __PRETTY_FUNCTION__));

browser_window_destroy_children(bw);
browser_window_destroy_iframes(bw);

/* Destroy scrollbars */
if (bw->scroll_x != NULL((void*)0)) {
scrollbar_destroy(bw->scroll_x);
}

if (bw->scroll_y != NULL((void*)0)) {
scrollbar_destroy(bw->scroll_y);
}

/* clear any pending callbacks */
guit->misc->schedule(-1, browser_window_refresh, bw);
NSLOG(netsurf, INFO,do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 1851
, }; nslog__log(&_nslog_ctx, "Clearing reformat schedule for browser window %p"
, bw); } } while(0)
     "Clearing reformat schedule for browser window %p", bw)do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 1851
, }; nslog__log(&_nslog_ctx, "Clearing reformat schedule for browser window %p"
, bw); } } while(0);
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, false0, false0);
}
}

/* 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((void*)0)) {
hlcache_handle_abort(bw->loading_content);
hlcache_handle_release(bw->loading_content);
bw->loading_content = NULL((void*)0);
}

if (bw->current_content != NULL((void*)0)) {
content_close(bw->current_content);
hlcache_handle_release(bw->current_content);
bw->current_content = NULL((void*)0);
}

if (bw->favicon.loading != NULL((void*)0)) {
hlcache_handle_abort(bw->favicon.loading);
hlcache_handle_release(bw->favicon.loading);
bw->favicon.loading = NULL((void*)0);
}

if (bw->favicon.current != NULL((void*)0)) {
content_close(bw->favicon.current);
hlcache_handle_release(bw->favicon.current);
bw->favicon.current = NULL((void*)0);
}

if (bw->jsheap != NULL((void*)0)) {
js_destroyheap(bw->jsheap);
bw->jsheap = NULL((void*)0);
}

/* These simply free memory, so are safe here */

lwc_string_unref(bw->frag_id){ lwc_string *__lwc_s = (bw->frag_id); if (__lwc_s != ((void
*)0)) { __lwc_s->refcnt--; if ((__lwc_s->refcnt == 0) ||
 ((__lwc_s->refcnt == 1) && (__lwc_s->insensitive
 == __lwc_s))) lwc_string_destroy(__lwc_s); } };

browser_window_history_destroy(bw);

cert_chain_free(bw->current_cert_chain);
cert_chain_free(bw->loading_cert_chain);
bw->current_cert_chain = NULL((void*)0);
bw->loading_cert_chain = NULL((void*)0);

free(bw->name);
free(bw->status.text);
bw->status.text = NULL((void*)0);
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",do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 1923
, }; nslog__log(&_nslog_ctx, "Status text cache match:miss %d:%d"
, bw->status.match, bw->status.miss); } } while(0)
     bw->status.match, bw->status.miss)do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 1923
, }; nslog__log(&_nslog_ctx, "Status text cache match:miss %d:%d"
, bw->status.match, bw->status.miss); } } while(0);

return NSERROR_OK;
1926}


1929/**
* Set browser window scale.
*
* \param bw Browser window.
* \param absolute scale value.
* \return NSERROR_OK on success else error code
*/
1936static nserror
1937browser_window_set_scale_internal(struct browser_window *bw, float scale)
1938{
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((void*)0)) {
if (content_can_reformat(bw->current_content) == false0) {
	browser_window_update(bw, false0);
} 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;
1967}


1970/**
* 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.
*/
1980static void
1981browser_window_find_target_internal(struct browser_window *bw,
		    const char *target,
		    int depth,
		    struct browser_window *page,
		    int *rdepth,
		    struct browser_window **bw_target)
1987{
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((void*)0)) {
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((void*)0)) {
for (i = 0; i < bw->iframe_count; i++) {
	browser_window_find_target_internal(&bw->iframes[i],
					    target,
					    depth,
					    page,
					    rdepth,
					    bw_target);
}
}
2031}


2034/**
* 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.
*/
2045static void
2046browser_window_mouse_drag_end(struct browser_window *bw,
	      browser_mouse_state mouse,
	      int x, int y)
2049{
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, true1, &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, false0, &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((void*)0));
break;
}
2087}

2089/**
* 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
*/
2097static void
2098browser_window_mouse_click_internal(struct browser_window *bw,
		    browser_mouse_state mouse,
		    int x, int y)
2101{
hlcache_handle *c = bw->current_content;
const char *status = NULL((void*)0);
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((void*)0)) {
int scr_x, scr_y;
browser_window_get_scrollbar_pos(bw, true1, &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_WIDTH16) {
	status = scrollbar_mouse_status_to_message(
			   scrollbar_mouse_action(
				  bw->scroll_x, mouse,
				  scr_x, scr_y));
	pointer = BROWSER_POINTER_DEFAULT;

	if (status != NULL((void*)0))
		browser_window_set_status(bw, status);

	browser_window_set_pointer(bw, pointer);
	return;
}
}

if (bw->scroll_y != NULL((void*)0)) {
int scr_x, scr_y;
browser_window_get_scrollbar_pos(bw, false0, &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_WIDTH16) {
	status = scrollbar_mouse_status_to_message(
				scrollbar_mouse_action(
					bw->scroll_y,
					mouse,
					scr_x,
					scr_y));
	pointer = BROWSER_POINTER_DEFAULT;

	if (status != NULL((void*)0)) {
		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, false0);
		browser_window_set_selection(bw, false0, true1);
		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;
}
2221}


2224/**
* 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
*/
2232static void
2233browser_window_mouse_track_internal(struct browser_window *bw,
		    browser_mouse_state mouse,
		    int x, int y)
2236{
hlcache_handle *c = bw->current_content;
const char *status = NULL((void*)0);
browser_pointer_shape pointer = BROWSER_POINTER_DEFAULT;

if (bw->window != NULL((void*)0) && 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, true1, &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((void*)0) && 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((void*)0) && bw->drag.type != DRAGGING_SCR_Y) {
int scr_x, scr_y;
browser_window_get_scrollbar_pos(bw, true1, &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_WIDTH16 &&
     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((void*)0)) {
		browser_window_set_status(bw, status);
	}

	browser_window_set_pointer(bw, pointer);
	return;
}
}

/* Browser window's vertical scrollbar */
if (bw->scroll_y != NULL((void*)0)) {
int scr_x, scr_y;
browser_window_get_scrollbar_pos(bw, false0, &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_WIDTH16 &&
     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((void*)0)) {
		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)((c != ((void*)0)) ? (void) (0) : __assert_fail ("c != NULL",
 "desktop/browser_window.c", 2386, __extension__ __PRETTY_FUNCTION__
));
content_mouse_track(c, bw, mouse, x, y);
}
2389}


2392/**
* 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
*/
2399static bool_Bool
2400browser_window_scroll_at_point_internal(struct browser_window *bw,
			int x, int y,
			int scrx, int scry)
2403{
assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 2404, __extension__ __PRETTY_FUNCTION__
));

/* 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((void*)0) &&
   content_scroll_at_point(bw->current_content, x, y, scrx, scry) == true1) {
/* Scroll handled by current content */
return true1;
}

/* Try to scroll this window. */
return (int)scrollbar_scroll(bw->scroll_y, scry) |
(int)scrollbar_scroll(bw->scroll_x, scrx);
2446}


2449/**
* 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
*/
2457static bool_Bool
2458browser_window_drop_file_at_point_internal(struct browser_window *bw,
			   int x, int y,
			   char *file)
2461{
assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 2462, __extension__ __PRETTY_FUNCTION__
));

/* 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((void*)0)) {
return content_drop_file_at_point(bw->current_content,
				  x, y, file);
}

return false0;
2501}


2504/**
* 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
*/
2513static bool_Bool
2514is_internal_navigate_url(nsurl *url)
2515{
bool_Bool is_internal = false0;
lwc_string *scheme, *path;

scheme = nsurl_get_component(url, NSURL_SCHEME);
if (scheme != NULL((void*)0)) {
path = nsurl_get_component(url, NSURL_PATH);
if (path != NULL((void*)0)) {
	if (scheme == corestring_lwc_about) {
		if (path == corestring_lwc_query_auth) {
			is_internal = true1;
		} else if (path == corestring_lwc_query_ssl) {
			is_internal = true1;
		} else if (path == corestring_lwc_query_timeout) {
			is_internal = true1;
		} else if (path == corestring_lwc_query_fetcherror) {
			is_internal = true1;
		}
	}
	lwc_string_unref(path){ lwc_string *__lwc_s = (path); if (__lwc_s != ((void*)0)) { __lwc_s
->refcnt--; if ((__lwc_s->refcnt == 0) || ((__lwc_s->
refcnt == 1) && (__lwc_s->insensitive == __lwc_s))
) lwc_string_destroy(__lwc_s); } };
}
lwc_string_unref(scheme){ lwc_string *__lwc_s = (scheme); if (__lwc_s != ((void*)0)) {
 __lwc_s->refcnt--; if ((__lwc_s->refcnt == 0) || ((__lwc_s
->refcnt == 1) && (__lwc_s->insensitive == __lwc_s
))) lwc_string_destroy(__lwc_s); } };
}
return is_internal;
2539}


2542/* exported interface, documented in netsurf/browser_window.h */
2543nserror
2544browser_window_get_name(struct browser_window *bw, const char **out_name)
2545{
assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 2546, __extension__ __PRETTY_FUNCTION__
));

*out_name = bw->name;

return NSERROR_OK;
2551}


2554/* exported interface, documented in netsurf/browser_window.h */
2555nserror
2556browser_window_set_name(struct browser_window *bw, const char *name)
2557{
char *nname = NULL((void*)0);

assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 2560, __extension__ __PRETTY_FUNCTION__
));

if (name != NULL((void*)0)) {
nname = strdup(name);
if (nname == NULL((void*)0)) {
	return NSERROR_NOMEM;
}
}

if (bw->name != NULL((void*)0)) {
free(bw->name);
}

bw->name = nname;

return NSERROR_OK;
2576}


2579/* exported interface, documented in netsurf/browser_window.h */
2580bool_Bool
2581browser_window_redraw(struct browser_window *bw,
      int x, int y,
      const struct rect *clip,
      const struct redraw_context *ctx)
2585{
struct redraw_context new_ctx = *ctx;
int width = 0;
int height = 0;
bool_Bool plot_ok = true1;
content_type content_type;
struct content_redraw_data data;
struct rect content_clip;
nserror res;

if (bw == NULL((void*)0)) {
NSLOG(netsurf, INFO, "NULL browser window")do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 2596
, }; nslog__log(&_nslog_ctx, "NULL browser window"); } } while
(0);
return false0;
}

x /= bw->scale;
y /= bw->scale;

if ((bw->current_content == NULL((void*)0)) &&
   (bw->children == NULL((void*)0))) {
/* 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((void*)0)) &&
   (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((void*)0)) {
	/* 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((void*)0) && 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 = false0;
data.repeat_y = false0;

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((void*)0)) ?
			   SCROLLBAR_WIDTH16 : 0)) * bw->scale;
int y1 = (y + bw->height - ((bw->scroll_x != NULL((void*)0)) ?
			    SCROLLBAR_WIDTH16 : 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((void*)0)) {
	browser_window_get_scrollbar_pos(bw, true1,
					 &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 = false0;
	}
}
if (bw->scroll_y != NULL((void*)0)) {
	browser_window_get_scrollbar_pos(bw, false0,
					 &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 = false0;
	}
}
}

if (bw->window != NULL((void*)0) && ctx->plot->option_knockout) {
/* Root browser window: end knockout */
knockout_plot_end(ctx);
}

return plot_ok;
2759}


2762/* exported interface, documented in netsurf/browser_window.h */
2763bool_Bool browser_window_redraw_ready(struct browser_window *bw)
2764{
if (bw == NULL((void*)0)) {
NSLOG(netsurf, INFO, "NULL browser window")do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 2766
, }; nslog__log(&_nslog_ctx, "NULL browser window"); } } while
(0);
return false0;
} else if (bw->current_content != NULL((void*)0)) {
/* Can't render locked contents */
return !content_is_locked(bw->current_content);
}

return true1;
2774}


2777/* exported interface, documented in browser_private.h */
2778void browser_window_update_extent(struct browser_window *bw)
2779{
if (bw->window != NULL((void*)0)) {
/* Front end window */
guit->window->event(bw->window, GW_EVENT_UPDATE_EXTENT);
} else {
/* Core-managed browser window */
browser_window_handle_scrollbars(bw);
}
2787}


2790/* exported interface, documented in netsurf/browser_window.h */
2791void
2792browser_window_get_position(struct browser_window *bw,
	    bool_Bool root,
	    int *pos_x,
	    int *pos_y)
2796{
*pos_x = 0;
*pos_y = 0;

assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 2800, __extension__ __PRETTY_FUNCTION__
));

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;
}
}
2833}


2836/* exported interface, documented in netsurf/browser_window.h */
2837void browser_window_set_position(struct browser_window *bw, int x, int y)
2838{
assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 2839, __extension__ __PRETTY_FUNCTION__
));

if (bw->window == NULL((void*)0)) {
/* Core managed browser window */
bw->x = x;
bw->y = y;
} else {
NSLOG(netsurf, INFO,do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 2847
, }; nslog__log(&_nslog_ctx, "Asked to set position of front end window."
); } } while(0)
      "Asked to set position of front end window.")do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 2847
, }; nslog__log(&_nslog_ctx, "Asked to set position of front end window."
); } } while(0);
assert(0)((0) ? (void) (0) : __assert_fail ("0", "desktop/browser_window.c"
, 2848, __extension__ __PRETTY_FUNCTION__));
}
2850}


2853/* exported interface, documented in netsurf/browser_window.h */
2854void
2855browser_window_set_drag_type(struct browser_window *bw,
	     browser_drag_type type,
	     const struct rect *rect)
2858{
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((void*)0);
} 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);
}
2885}


2888/* exported interface, documented in netsurf/browser_window.h */
2889browser_drag_type browser_window_get_drag_type(struct browser_window *bw)
2890{
return bw->drag.type;
2892}


2895/* exported interface, documented in netsurf/browser_window.h */
2896struct browser_window * browser_window_get_root(struct browser_window *bw)
2897{
while (bw && bw->parent) {
bw = bw->parent;
}
return bw;
2902}


2905/* exported interface, documented in netsurf/browser_window.h */
2906browser_editor_flags browser_window_get_editor_flags(struct browser_window *bw)
2907{
browser_editor_flags ed_flags = BW_EDITOR_NONE;
assert(bw->window)((bw->window) ? (void) (0) : __assert_fail ("bw->window"
, "desktop/browser_window.c", 2909, __extension__ __PRETTY_FUNCTION__
));
assert(bw->parent == NULL)((bw->parent == ((void*)0)) ? (void) (0) : __assert_fail (
"bw->parent == NULL", "desktop/browser_window.c", 2910, __extension__
 __PRETTY_FUNCTION__));

if (bw->selection.bw != NULL((void*)0)) {
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;
2923}


2926/* exported interface, documented in netsurf/browser_window.h */
2927bool_Bool browser_window_can_select(struct browser_window *bw)
2928{
if (bw == NULL((void*)0) || bw->current_content == NULL((void*)0))
return false0;

/* 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 false0;

return true1;
2940}


2943/* exported interface, documented in netsurf/browser_window.h */
2944char * browser_window_get_selection(struct browser_window *bw)
2945{
assert(bw->window)((bw->window) ? (void) (0) : __assert_fail ("bw->window"
, "desktop/browser_window.c", 2946, __extension__ __PRETTY_FUNCTION__
));
assert(bw->parent == NULL)((bw->parent == ((void*)0)) ? (void) (0) : __assert_fail (
"bw->parent == NULL", "desktop/browser_window.c", 2947, __extension__
 __PRETTY_FUNCTION__));

if (bw->selection.bw == NULL((void*)0) ||
   bw->selection.bw->current_content == NULL((void*)0))
return NULL((void*)0);

return content_get_selection(bw->selection.bw->current_content);
2954}


2957/* exported interface, documented in netsurf/browser_window.h */
2958bool_Bool browser_window_can_search(struct browser_window *bw)
2959{
if (bw == NULL((void*)0) || bw->current_content == NULL((void*)0))
return false0;

/** \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 false0;
}

return true1;
2972}


2975/* exported interface, documented in netsurf/browser_window.h */
2976bool_Bool browser_window_is_frameset(struct browser_window *bw)
2977{
return (bw->children != NULL((void*)0));
2979}


2982/* exported interface, documented in netsurf/browser_window.h */
2983nserror
2984browser_window_get_scrollbar_type(struct browser_window *bw,
		  browser_scrolling *h,
		  browser_scrolling *v)
2987{
*h = bw->scrolling;
*v = bw->scrolling;

return NSERROR_OK;
2992}


2995/* exported interface, documented in netsurf/browser_window.h */
2996nserror
2997browser_window_get_features(struct browser_window *bw,
	    int x, int y,
	    struct browser_window_features *data)
3000{
/* clear the features structure to empty values */
data->link = NULL((void*)0);
data->link_title = NULL((void*)0);
data->link_title_length = 0;
data->object = NULL((void*)0);
data->main = NULL((void*)0);
data->form_features = CTX_FORM_NONE;

return browser_window__get_contextual_content(bw,
				      x / bw->scale,
				      y / bw->scale,
				      data);
3013}


3016/* exported interface, documented in netsurf/browser_window.h */
3017bool_Bool
3018browser_window_scroll_at_point(struct browser_window *bw,
	       int x, int y,
	       int scrx, int scry)
3021{
return browser_window_scroll_at_point_internal(bw,
				       x / bw->scale,
				       y / bw->scale,
				       scrx,
				       scry);
3027}


3030/* exported interface, documented in netsurf/browser_window.h */
3031bool_Bool
3032browser_window_drop_file_at_point(struct browser_window *bw,
		  int x, int y,
		  char *file)
3035{
return browser_window_drop_file_at_point_internal(bw,
					  x / bw->scale,
					  y / bw->scale,
					  file);
3040}


3043/* exported interface, documented in netsurf/browser_window.h */
3044void
3045browser_window_set_gadget_filename(struct browser_window *bw,
		   struct form_control *gadget,
		   const char *fn)
3048{
html_set_file_gadget_filename(bw->current_content, gadget, fn);
3050}


3053/* exported interface, documented in netsurf/browser_window.h */
3054nserror
3055browser_window_debug_dump(struct browser_window *bw,
	  FILE *f,
	  enum content_debug op)
3058{
if (bw->current_content != NULL((void*)0)) {
return content_debug_dump(bw->current_content, f, op);
}
return NSERROR_OK;
3063}


3066/* exported interface, documented in netsurf/browser_window.h */
3067nserror browser_window_debug(struct browser_window *bw, enum content_debug op)
3068{
if (bw->current_content != NULL((void*)0)) {
return content_debug(bw->current_content, op);
}
return NSERROR_OK;
3073}


3076/* exported interface, documented in netsurf/browser_window.h */
3077nserror
3078browser_window_create(enum browser_window_create_flags flags,
      nsurl *url,
      nsurl *referrer,
      struct browser_window *existing,
      struct browser_window **bw)
3083{
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((void*)0)) {
	assert(0 && "Failed: No existing window provided.")((0 && "Failed: No existing window provided.") ? (void
) (0) : __assert_fail ("0 && \"Failed: No existing window provided.\""
, "desktop/browser_window.c", 3091, __extension__ __PRETTY_FUNCTION__
));
	return NSERROR_BAD_PARAMETER;
}
}

if (!(flags & BW_CREATE_HISTORY)) {
if (!(flags & BW_CREATE_CLONE) || existing == NULL((void*)0)) {
	assert(0 && "Failed: Must have existing for history.")((0 && "Failed: Must have existing for history.") ? (
void) (0) : __assert_fail ("0 && \"Failed: Must have existing for history.\""
, "desktop/browser_window.c", 3098, __extension__ __PRETTY_FUNCTION__
));
	return NSERROR_BAD_PARAMETER;
}
}

ret = calloc(1, sizeof(struct browser_window));
if (ret == NULL((void*)0)) {
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 = true1;
ret->no_resize = true1;
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((void*)0)) ? existing->window : NULL((void*)0),
			   gw_flags);

if (ret->window == NULL((void*)0)) {
browser_window_destroy(ret);
return NSERROR_BAD_PARAMETER;
}

if (url != NULL((void*)0)) {
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((void*)0),
			NULL((void*)0),
			NULL((void*)0));
}

if (bw != NULL((void*)0)) {
*bw = ret;
}

return NSERROR_OK;
3171}


3174/* exported internal interface, documented in desktop/browser_private.h */
3175nserror
3176browser_window_initialise_common(enum browser_window_create_flags flags,
		 struct browser_window *bw,
		 const struct browser_window *existing)
3179{
nserror err;
assert(bw)((bw) ? (void) (0) : __assert_fail ("bw", "desktop/browser_window.c"
, 3181, __extension__ __PRETTY_FUNCTION__));

/* new javascript context for each window/(i)frame */
err = js_newheap(nsoption_int(script_timeout)(nsoptions[NSOPTION_script_timeout].value.i), &bw->jsheap);
if (err != NSERROR_OK)
return err;

if (flags & BW_CREATE_CLONE) {
assert(existing != NULL)((existing != ((void*)0)) ? (void) (0) : __assert_fail ("existing != NULL"
, "desktop/browser_window.c", 3189, __extension__ __PRETTY_FUNCTION__
));

/* 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)(nsoptions[NSOPTION_scale].value.i) / 100.0;
}

if (err != NSERROR_OK)
return err;

/* window characteristics */
bw->refresh_interval = -1;

bw->drag.type = DRAGGING_NONE;

bw->scroll_x = NULL((void*)0);
bw->scroll_y = NULL((void*)0);

bw->focus = NULL((void*)0);

/* initialise status text cache */
bw->status.text = NULL((void*)0);
bw->status.text_len = 0;
bw->status.match = 0;
bw->status.miss = 0;

return NSERROR_OK;
3224}


3227/* exported interface, documented in netsurf/browser_window.h */
3228void browser_window_destroy(struct browser_window *bw)
3229{
/* can't destoy child windows on their own */
assert(!bw->parent)((!bw->parent) ? (void) (0) : __assert_fail ("!bw->parent"
, "desktop/browser_window.c", 3231, __extension__ __PRETTY_FUNCTION__
));

/* destroy */
browser_window_destroy_internal(bw);
free(bw);
3236}


3239/* exported interface, documented in netsurf/browser_window.h */
3240nserror browser_window_refresh_url_bar(struct browser_window *bw)
3241{
nserror ret;
nsurl *display_url, *url;

assert(bw)((bw) ? (void) (0) : __assert_fail ("bw", "desktop/browser_window.c"
, 3245, __extension__ __PRETTY_FUNCTION__));

if (bw->parent != NULL((void*)0)) {
/* Not root window; don't set a URL in GUI URL bar */
return NSERROR_OK;
}

if (bw->current_content == NULL((void*)0)) {
/* 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((void*)0)) {
/* 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((void*)0)) {
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;
3285}


3288/* exported interface documented in netsurf/browser_window.h */
3289nserror
3290browser_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)
3297{
int depth = 0;
struct browser_window *cur;
uint32_t fetch_flags = 0;
bool_Bool fetch_is_post = (post_urlenc != NULL((void*)0) || post_multipart != NULL((void*)0));
llcache_post_data post;
hlcache_child_context child;
nserror error;
bool_Bool is_internal = false0;
struct browser_fetch_parameters params, *pass_params = NULL((void*)0);

assert(bw)((bw) ? (void) (0) : __assert_fail ("bw", "desktop/browser_window.c"
, 3308, __extension__ __PRETTY_FUNCTION__));
assert(url)((url) ? (void) (0) : __assert_fail ("url", "desktop/browser_window.c"
, 3309, __extension__ __PRETTY_FUNCTION__));

NSLOG(netsurf, INFO, "bw %p, url %s", bw, nsurl_access(url))do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 3311
, }; nslog__log(&_nslog_ctx, "bw %p, url %s", bw, nsurl_access
(url)); } } while(0);

/*
* 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((void*)0)) {
	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((void*)0) &&
   bw->history != NULL((void*)0) &&
   bw->history->current != NULL((void*)0) &&
   !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_DEPTH8) {
NSLOG(netsurf, INFO, "frame depth too high.")do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 3355
, }; nslog__log(&_nslog_ctx, "frame depth too high."); } }
 while(0);
return NSERROR_FRAME_DEPTH;
}

/* Set up retrieval parameters */
if (!(flags & BW_NAVIGATE_UNVERIFIABLE)) {
fetch_flags |= LLCACHE_RETRIEVE_VERIFIABLE;
}

if (post_multipart != NULL((void*)0)) {
post.type = LLCACHE_POST_MULTIPART;
post.data.multipart = post_multipart;
} else if (post_urlenc != NULL((void*)0)) {
post.type = LLCACHE_POST_URL_ENCODED;
post.data.urlenc = post_urlenc;
}

child.charset = content_get_encoding(parent, CONTENT_ENCODING_NORMAL);
if ((parent != NULL((void*)0)) && (content_get_type(parent) == CONTENT_HTML)) {
child.quirks = content_get_quirks(parent);
} else {
child.quirks = false0;
}

url = nsurl_ref(url);

if (referrer != NULL((void*)0)) {
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((void*)0)) {
	nsurl_unref(referrer);
}
return error;
}

lwc_string_unref(bw->frag_id){ lwc_string *__lwc_s = (bw->frag_id); if (__lwc_s != ((void
*)0)) { __lwc_s->refcnt--; if ((__lwc_s->refcnt == 0) ||
 ((__lwc_s->refcnt == 1) && (__lwc_s->insensitive
 == __lwc_s))) lwc_string_destroy(__lwc_s); } };
bw->frag_id = NULL((void*)0);

if (nsurl_has_component(url, NSURL_FRAGMENT)) {
bool_Bool same_url = false0;

bw->frag_id = nsurl_get_component(url, NSURL_FRAGMENT);

/* Compare new URL with existing one (ignoring fragments) */
if ((bw->current_content != NULL((void*)0)) &&
    (hlcache_handle_get_url(bw->current_content) != NULL((void*)0))) {
	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 == false0) &&
    (nsurl_has_component(url, NSURL_QUERY) == false0)) {
	nsurl_unref(url);

	if (referrer != NULL((void*)0)) {
		nsurl_unref(referrer);
	}

	if ((flags & BW_NAVIGATE_HISTORY) != 0) {
		browser_window_history_add(bw,
					   bw->current_content,
					   bw->frag_id);
	}

	browser_window_update(bw, false0);

	if (bw->current_content != NULL((void*)0)) {
		browser_window_refresh_url_bar(bw);
	}
	return NSERROR_OK;
}
}

browser_window_stop(bw);
browser_window_remove_caret(bw, false0);
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((void*)0)) {
params.referrer = nsurl_ref(referrer);
}

params.flags = flags;

if (post_urlenc != NULL((void*)0)) {
params.post_urlenc = strdup(post_urlenc);
}

if (post_multipart != NULL((void*)0)) {
params.post_multipart = fetch_multipart_data_clone(post_multipart);
}

if (parent != NULL((void*)0)) {
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((void*)0)) {
nsurl_unref(referrer);
}

if (is_internal) {
browser_window__free_fetch_parameters(&params);
}

return error;
3498}


3501/**
* Internal navigation handler for normal fetches
*/
3504static nserror
3505navigate_internal_real(struct browser_window *bw,
       struct browser_fetch_parameters *params)
3507{
uint32_t fetch_flags = 0;
bool_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))do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 3515
, }; nslog__log(&_nslog_ctx, "Loading '%s'", nsurl_access
(params->url)); } } while(0);

fetch_is_post = (params->post_urlenc != NULL((void*)0) || params->post_multipart != NULL((void*)0));

/* Clear SSL info for load */
cert_chain_free(bw->loading_cert_chain);
bw->loading_cert_chain = NULL((void*)0);

/* Set up retrieval parameters */
if (!(params->flags & BW_NAVIGATE_UNVERIFIABLE)) {
fetch_flags |= LLCACHE_RETRIEVE_VERIFIABLE;
}

if (params->post_multipart != NULL((void*)0)) {
post.type = LLCACHE_POST_MULTIPART;
post.data.multipart = params->post_multipart;
} else if (params->post_urlenc != NULL((void*)0)) {
post.type = LLCACHE_POST_URL_ENCODED;
post.data.urlenc = params->post_urlenc;
}

if (params->parent_charset != NULL((void*)0)) {
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((void*)0),
		      browser_window_callback,
		      bw,
		      params->parent_charset != NULL((void*)0) ? &child : NULL((void*)0),
		      CONTENT_ANY,
		      &c);

switch (res) {
case NSERROR_OK:
bw->loading_content = c;
browser_window_start_throbber(bw);
if (bw->window != NULL((void*)0)) {
	guit->window->set_icon(bw->window, NULL((void*)0));
}
if (bw->internal_nav == false0) {
	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;
3589}


3592/**
* 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
*/
3598static nserror
3599navigate_internal_query_auth(struct browser_window *bw,
	     struct browser_fetch_parameters *params)
3601{
char *userpass = NULL((void*)0);
const char *username, *password, *realm, *siteurl;
nsurl *sitensurl;
nserror res;
bool_Bool is_login = false0, is_cancel = false0;

assert(params->post_multipart != NULL)((params->post_multipart != ((void*)0)) ? (void) (0) : __assert_fail
 ("params->post_multipart != NULL", "desktop/browser_window.c"
, 3608, __extension__ __PRETTY_FUNCTION__));

is_login = fetch_multipart_data_find(params->post_multipart, "login") != NULL((void*)0);
is_cancel = fetch_multipart_data_find(params->post_multipart, "cancel") != NULL((void*)0);

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 = true1;
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((void*)0) || password == NULL((void*)0) ||
   realm == NULL((void*)0) || siteurl == NULL((void*)0)) {
/* 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 = false0;
return navigate_internal_real(bw, &bw->loading_parameters);
3666}


3669/**
* 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
*/
3675static nserror
3676navigate_internal_query_ssl(struct browser_window *bw,
	    struct browser_fetch_parameters *params)
3678{
bool_Bool is_proceed = false0, is_back = false0;
const char *siteurl = NULL((void*)0);
nsurl *siteurl_ns;

assert(params->post_multipart != NULL)((params->post_multipart != ((void*)0)) ? (void) (0) : __assert_fail
 ("params->post_multipart != NULL", "desktop/browser_window.c"
, 3683, __extension__ __PRETTY_FUNCTION__));

is_proceed = fetch_multipart_data_find(params->post_multipart, "proceed") != NULL((void*)0);
is_back = fetch_multipart_data_find(params->post_multipart, "back") != NULL((void*)0);
siteurl = fetch_multipart_data_find(params->post_multipart, "siteurl");

if (!(is_proceed || is_back) || siteurl == NULL((void*)0)) {
/* 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")do { if (NSLOG_LEVEL_ERROR >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_ERROR, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 3695
, }; nslog__log(&_nslog_ctx, "Unable to reset ssl loading parameters"
); } } while(0);
} 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);
3703}


3706/**
* 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
*/
3712static nserror
3713navigate_internal_query_timeout(struct browser_window *bw,
		struct browser_fetch_parameters *params)
3715{
bool_Bool is_retry = false0, is_back = false0;

NSLOG(netsurf, INFO, "bw:%p params:%p", bw, params)do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 3718
, }; nslog__log(&_nslog_ctx, "bw:%p params:%p", bw, params
); } } while(0);

assert(params->post_multipart != NULL)((params->post_multipart != ((void*)0)) ? (void) (0) : __assert_fail
 ("params->post_multipart != NULL", "desktop/browser_window.c"
, 3720, __extension__ __PRETTY_FUNCTION__));

is_retry = fetch_multipart_data_find(params->post_multipart, "retry") != NULL((void*)0);
is_back = fetch_multipart_data_find(params->post_multipart, "back") != NULL((void*)0);

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 = false0;
return navigate_internal_real(bw, &bw->loading_parameters);
}

return navigate_internal_real(bw, params);
3739}


3742/**
* 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
*/
3748static nserror
3749navigate_internal_query_fetcherror(struct browser_window *bw,
		   struct browser_fetch_parameters *params)
3751{
bool_Bool is_retry = false0, is_back = false0;

NSLOG(netsurf, INFO, "bw:%p params:%p", bw, params)do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 3754
, }; nslog__log(&_nslog_ctx, "bw:%p params:%p", bw, params
); } } while(0);

assert(params->post_multipart != NULL)((params->post_multipart != ((void*)0)) ? (void) (0) : __assert_fail
 ("params->post_multipart != NULL", "desktop/browser_window.c"
, 3756, __extension__ __PRETTY_FUNCTION__));

is_retry = fetch_multipart_data_find(params->post_multipart, "retry") != NULL((void*)0);
is_back = fetch_multipart_data_find(params->post_multipart, "back") != NULL((void*)0);

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 = false0;
return navigate_internal_real(bw, &bw->loading_parameters);
}

return navigate_internal_real(bw, params);
3775}


3778/**
* 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.
*/
3788nserror
3789browser_window__navigate_internal(struct browser_window *bw,
		  struct browser_fetch_parameters *params)
3791{
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){ lwc_string *__lwc_s = (scheme); if (__lwc_s != ((void*)0)) {
 __lwc_s->refcnt--; if ((__lwc_s->refcnt == 0) || ((__lwc_s
->refcnt == 1) && (__lwc_s->insensitive == __lwc_s
))) lwc_string_destroy(__lwc_s); } };
goto normal_fetch;
}
lwc_string_unref(scheme){ lwc_string *__lwc_s = (scheme); if (__lwc_s != ((void*)0)) {
 __lwc_s->refcnt--; if ((__lwc_s->refcnt == 0) || ((__lwc_s
->refcnt == 1) && (__lwc_s->insensitive == __lwc_s
))) lwc_string_destroy(__lwc_s); } };

/* Is it the auth query handler? */
path = nsurl_get_component(params->url, NSURL_PATH);
if (path == corestring_lwc_query_auth) {
lwc_string_unref(path){ lwc_string *__lwc_s = (path); if (__lwc_s != ((void*)0)) { __lwc_s
->refcnt--; if ((__lwc_s->refcnt == 0) || ((__lwc_s->
refcnt == 1) && (__lwc_s->insensitive == __lwc_s))
) lwc_string_destroy(__lwc_s); } };
return navigate_internal_query_auth(bw, params);
}
if (path == corestring_lwc_query_ssl) {
lwc_string_unref(path){ lwc_string *__lwc_s = (path); if (__lwc_s != ((void*)0)) { __lwc_s
->refcnt--; if ((__lwc_s->refcnt == 0) || ((__lwc_s->
refcnt == 1) && (__lwc_s->insensitive == __lwc_s))
) lwc_string_destroy(__lwc_s); } };
return navigate_internal_query_ssl(bw, params);
}
if (path == corestring_lwc_query_timeout) {
lwc_string_unref(path){ lwc_string *__lwc_s = (path); if (__lwc_s != ((void*)0)) { __lwc_s
->refcnt--; if ((__lwc_s->refcnt == 0) || ((__lwc_s->
refcnt == 1) && (__lwc_s->insensitive == __lwc_s))
) lwc_string_destroy(__lwc_s); } };
return navigate_internal_query_timeout(bw, params);
}
if (path == corestring_lwc_query_fetcherror) {
lwc_string_unref(path){ lwc_string *__lwc_s = (path); if (__lwc_s != ((void*)0)) { __lwc_s
->refcnt--; if ((__lwc_s->refcnt == 0) || ((__lwc_s->
refcnt == 1) && (__lwc_s->insensitive == __lwc_s))
) lwc_string_destroy(__lwc_s); } };
return navigate_internal_query_fetcherror(bw, params);
}
lwc_string_unref(path){ lwc_string *__lwc_s = (path); if (__lwc_s != ((void*)0)) { __lwc_s
->refcnt--; if ((__lwc_s->refcnt == 0) || ((__lwc_s->
refcnt == 1) && (__lwc_s->insensitive == __lwc_s))
) lwc_string_destroy(__lwc_s); } };

/* Fall through to a normal about: fetch */

normal_fetch:
return navigate_internal_real(bw, params);
3826}


3829/* Exported interface, documented in netsurf/browser_window.h */
3830bool_Bool browser_window_up_available(struct browser_window *bw)
3831{
bool_Bool result = false0;

if (bw != NULL((void*)0) && bw->current_content != NULL((void*)0)) {
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) == false0;
	nsurl_unref(parent);
}
}

return result;
3849}


3852/* Exported interface, documented in netsurf/browser_window.h */
3853nserror browser_window_navigate_up(struct browser_window *bw, bool_Bool new_window)
3854{
nsurl *current, *parent;
nserror err;

if (bw == NULL((void*)0))
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) == true1) {
/* 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((void*)0), bw, NULL((void*)0));
} else {
err = browser_window_navigate(bw, parent, NULL((void*)0),
			      BW_NAVIGATE_HISTORY,
			      NULL((void*)0), NULL((void*)0), NULL((void*)0));
}

nsurl_unref(parent);
return err;
3885}


3888/* Exported interface, documented in include/netsurf/browser_window.h */
3889nsurl* browser_window_access_url(const struct browser_window *bw)
3890{
assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 3891, __extension__ __PRETTY_FUNCTION__
));

if (bw->current_content != NULL((void*)0)) {
return hlcache_handle_get_url(bw->current_content);

} else if (bw->loading_content != NULL((void*)0)) {
/* TODO: should we return this? */
return hlcache_handle_get_url(bw->loading_content);
}

return corestring_nsurl_about_blank;
3902}


3905/* Exported interface, documented in include/netsurf/browser_window.h */
3906nserror
3907browser_window_get_url(struct browser_window *bw, bool_Bool fragment,nsurl** url_out)
3908{
nserror err;
nsurl *url;

assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 3912, __extension__ __PRETTY_FUNCTION__
));

if (!fragment || bw->frag_id == NULL((void*)0) || bw->loading_content != NULL((void*)0)) {
/* 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;
3931}


3934/* Exported interface, documented in netsurf/browser_window.h */
3935const char* browser_window_get_title(struct browser_window *bw)
3936{
assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 3937, __extension__ __PRETTY_FUNCTION__
));

if (bw->current_content != NULL((void*)0)) {
return content_get_title(bw->current_content);
}

/* no content so return about:blank */
return nsurl_access(corestring_nsurl_about_blank);
3945}


3948/* Exported interface, documented in netsurf/browser_window.h */
3949struct history * browser_window_get_history(struct browser_window *bw)
3950{
assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 3951, __extension__ __PRETTY_FUNCTION__
));

return bw->history;
3954}


3957/* Exported interface, documented in netsurf/browser_window.h */
3958bool_Bool browser_window_has_content(struct browser_window *bw)
3959{
assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 3960, __extension__ __PRETTY_FUNCTION__
));

if (bw->current_content == NULL((void*)0)) {
return false0;
}

return true1;
3967}


3970/* Exported interface, documented in netsurf/browser_window.h */
3971struct hlcache_handle *browser_window_get_content(struct browser_window *bw)
3972{
return bw->current_content;
3974}


3977/* Exported interface, documented in netsurf/browser_window.h */
3978nserror browser_window_get_extents(struct browser_window *bw, bool_Bool scaled,
		   int *width, int *height)
3980{
assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 3981, __extension__ __PRETTY_FUNCTION__
));

if (bw->current_content == NULL((void*)0)) {
*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;
3998}


4001/* exported internal interface, documented in desktop/browser_private.h */
4002nserror
4003browser_window_get_dimensions(struct browser_window *bw,
	      int *width,
	      int *height)
4006{
nserror res;
assert(bw)((bw) ? (void) (0) : __assert_fail ("bw", "desktop/browser_window.c"
, 4008, __extension__ __PRETTY_FUNCTION__));

if (bw->window == NULL((void*)0)) {
/* 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;
4020}


4023/* Exported interface, documented in netsurf/browser_window.h */
4024void
4025browser_window_set_dimensions(struct browser_window *bw, int width, int height)
4026{
assert(bw)((bw) ? (void) (0) : __assert_fail ("bw", "desktop/browser_window.c"
, 4027, __extension__ __PRETTY_FUNCTION__));

if (bw->window == NULL((void*)0)) {
/* Core managed browser window */
bw->width = width;
bw->height = height;
} else {
NSLOG(netsurf, INFO,do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 4035
, }; nslog__log(&_nslog_ctx, "Asked to set dimensions of front end window."
); } } while(0)
      "Asked to set dimensions of front end window.")do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 4035
, }; nslog__log(&_nslog_ctx, "Asked to set dimensions of front end window."
); } } while(0);
assert(0)((0) ? (void) (0) : __assert_fail ("0", "desktop/browser_window.c"
, 4036, __extension__ __PRETTY_FUNCTION__));
}
4038}


4041/* Exported interface, documented in browser/browser_private.h */
4042nserror
4043browser_window_invalidate_rect(struct browser_window *bw, struct rect *rect)
4044{
int pos_x;
int pos_y;
struct browser_window *top = bw;

assert(bw)((bw) ? (void) (0) : __assert_fail ("bw", "desktop/browser_window.c"
, 4049, __extension__ __PRETTY_FUNCTION__));

if (bw->window == NULL((void*)0)) {
/* Core managed browser window */
browser_window_get_position(bw, true1, &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);
4069}


4072/* Exported interface, documented in netsurf/browser_window.h */
4073void browser_window_stop(struct browser_window *bw)
4074{
int children, index;

if (bw->loading_content != NULL((void*)0)) {
hlcache_handle_abort(bw->loading_content);
hlcache_handle_release(bw->loading_content);
bw->loading_content = NULL((void*)0);
}

if (bw->current_content != NULL((void*)0) &&
   content_get_status(bw->current_content) != CONTENT_STATUS_DONE) {
nserror error;
assert(content_get_status(bw->current_content) ==((content_get_status(bw->current_content) == CONTENT_STATUS_READY
) ? (void) (0) : __assert_fail ("content_get_status(bw->current_content) == CONTENT_STATUS_READY"
, "desktop/browser_window.c", 4087, __extension__ __PRETTY_FUNCTION__
))
       CONTENT_STATUS_READY)((content_get_status(bw->current_content) == CONTENT_STATUS_READY
) ? (void) (0) : __assert_fail ("content_get_status(bw->current_content) == CONTENT_STATUS_READY"
, "desktop/browser_window.c", 4087, __extension__ __PRETTY_FUNCTION__
));
error = hlcache_handle_abort(bw->current_content);
assert(error == NSERROR_OK)((error == NSERROR_OK) ? (void) (0) : __assert_fail ("error == NSERROR_OK"
, "desktop/browser_window.c", 4089, __extension__ __PRETTY_FUNCTION__
));
}

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((void*)0)) {
browser_window_refresh_url_bar(bw);
}

browser_window_stop_throbber(bw);
4110}


4113/* Exported interface, documented in netsurf/browser_window.h */
4114nserror browser_window_reload(struct browser_window *bw, bool_Bool all)
4115{
hlcache_handle *c;
unsigned int i;
struct nsurl *reload_url;

if ((bw->current_content) == NULL((void*)0) ||
   (bw->loading_content) != NULL((void*)0)) {
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((void*)0); object = object->next) {
	if (object->content != NULL((void*)0))
		content_invalidate_reuse_data(object->content);
}

/* invalidate stylesheets */
sheets = html_get_stylesheets(c, &count);

for (i = STYLESHEET_START4; i != count; i++) {
	if (sheets[i].sheet != NULL((void*)0)) {
		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((void*)0),
		       BW_NAVIGATE_NONE,
		       NULL((void*)0),
		       NULL((void*)0),
		       NULL((void*)0));
4161}


4164/* Exported interface, documented in netsurf/browser_window.h */
4165void browser_window_set_status(struct browser_window *bw, const char *text)
4166{
int text_len;
/* find topmost window */
while (bw->parent)
bw = bw->parent;

if ((bw->status.text != NULL((void*)0)) &&
   (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((void*)0)) || (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);
4195}


4198/* Exported interface, documented in netsurf/browser_window.h */
4199void browser_window_set_pointer(struct browser_window *bw,
		browser_pointer_shape shape)
4201{
struct browser_window *root = browser_window_get_root(bw);
gui_pointer_shape gui_shape;
bool_Bool loading;
uint64_t ms_now;

assert(root)((root) ? (void) (0) : __assert_fail ("root", "desktop/browser_window.c"
, 4207, __extension__ __PRETTY_FUNCTION__));
assert(root->window)((root->window) ? (void) (0) : __assert_fail ("root->window"
, "desktop/browser_window.c", 4208, __extension__ __PRETTY_FUNCTION__
));

loading = ((bw->loading_content != NULL((void*)0)) ||
   ((bw->current_content != NULL((void*)0)) &&
    (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);
4235}


4238/* exported function documented in netsurf/browser_window.h */
4239nserror browser_window_schedule_reformat(struct browser_window *bw)
4240{
if (bw->window == NULL((void*)0)) {
return NSERROR_BAD_PARAMETER;
}

return guit->misc->schedule(0, scheduled_reformat, bw);
4246}


4249/* exported function documented in netsurf/browser_window.h */
4250void
4251browser_window_reformat(struct browser_window *bw,
	bool_Bool background,
	int width,
	int height)
4255{
hlcache_handle *c = bw->current_content;

if (c == NULL((void*)0))
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((void*)0)) {
/* Core managed browser window; subtract scrollbar width */
width  -= bw->scroll_y ? SCROLLBAR_WIDTH16 : 0;
height -= bw->scroll_x ? SCROLLBAR_WIDTH16 : 0;

width  = width  > 0 ? width  : 0;
height = height > 0 ? height : 0;
}

content_reformat(c, background, width, height);
4277}


4280/* exported interface documented in netsurf/browser_window.h */
4281nserror
4282browser_window_set_scale(struct browser_window *bw, float scale, bool_Bool absolute)
4283{
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_MINIMUM0.2) {
scale = SCALE_MINIMUM0.2;
} else if (scale > SCALE_MAXIMUM10.0) {
scale = SCALE_MAXIMUM10.0;
}

res = browser_window_set_scale_internal(bw, scale);
if (res == NSERROR_OK) {
browser_window_recalculate_frameset(bw);
}

return res;
4314}


4317/* exported interface documented in netsurf/browser_window.h */
4318float browser_window_get_scale(struct browser_window *bw)
4319{
if (bw == NULL((void*)0)) {
return 1.0;
}

return bw->scale;
4325}


4328/* exported interface documented in netsurf/browser_window.h */
4329struct browser_window *
4330browser_window_find_target(struct browser_window *bw,
	   const char *target,
	   browser_mouse_state mouse)
4333{
struct browser_window *bw_target;
struct browser_window *top;
hlcache_handle *c;
int rdepth;
nserror error;
int flags = BW_CREATE_HISTORY | BW_CREATE_CLONE;

if (nsoption_bool(foreground_new)(nsoptions[NSOPTION_foreground_new].value.b))
flags |= BW_CREATE_FOREGROUND;

/* use the base target if we don't have one */
c = bw->current_content;
if (target == NULL((void*)0) &&
   c != NULL((void*)0) &&
   content_get_type(c) == CONTENT_HTML) {
target = html_get_base_target(c);
}
if (target == NULL((void*)0)) {
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)(nsoptions[NSOPTION_target_blank].value.b))) {
/* 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)(nsoptions[NSOPTION_button_2_tab].value.b)) &&
    (mouse & BROWSER_MOUSE_CLICK_2))||
   ((!nsoption_bool(button_2_tab)(nsoptions[NSOPTION_button_2_tab].value.b)) &&
    ((mouse & BROWSER_MOUSE_CLICK_1) &&
     (mouse & BROWSER_MOUSE_MOD_2))) ||
   ((nsoption_bool(button_2_tab)(nsoptions[NSOPTION_button_2_tab].value.b)) &&
    (!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"
 */
flags |= BW_CREATE_TAB;
error = browser_window_create(flags, NULL((void*)0), NULL((void*)0), bw, &bw_target);
if (error != NSERROR_OK) {
	return bw;
}
return bw_target;
} else if (((!nsoption_bool(button_2_tab)(nsoptions[NSOPTION_button_2_tab].value.b)) &&
    (mouse & BROWSER_MOUSE_CLICK_2)) ||
   ((nsoption_bool(button_2_tab)(nsoptions[NSOPTION_button_2_tab].value.b)) &&
    ((mouse & BROWSER_MOUSE_CLICK_1) &&
     (mouse & BROWSER_MOUSE_MOD_2))) ||
   ((!nsoption_bool(button_2_tab)(nsoptions[NSOPTION_button_2_tab].value.b)) &&
    (!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(flags, NULL((void*)0), NULL((void*)0), 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((void*)0);
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)(nsoptions[NSOPTION_target_blank].value.b))
return bw;

error = browser_window_create(flags, NULL((void*)0), NULL((void*)0), 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;
4456}


4459/* exported interface documented in netsurf/browser_window.h */
4460void
4461browser_window_mouse_track(struct browser_window *bw,
	   browser_mouse_state mouse,
	   int x, int y)
4464{
browser_window_mouse_track_internal(bw,
			    mouse,
			    x / bw->scale,
			    y / bw->scale);
4469}

4471/* exported interface documented in netsurf/browser_window.h */
4472void
4473browser_window_mouse_click(struct browser_window *bw,
	   browser_mouse_state mouse,
	   int x, int y)
4476{
browser_window_mouse_click_internal(bw,
			    mouse,
			    x / bw->scale,
			    y / bw->scale);
4481}


4484/* exported interface documented in netsurf/browser_window.h */
4485void browser_window_page_drag_start(struct browser_window *bw, int x, int y)
4486{
assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 4487, __extension__ __PRETTY_FUNCTION__
));

browser_window_set_drag_type(bw, DRAGGING_PAGE_SCROLL, NULL((void*)0));

bw->drag.start_x = x;
bw->drag.start_y = y;

if (bw->window != NULL((void*)0)) {
/* 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);
}
4506}


4509/* exported interface documented in netsurf/browser_window.h */
4510bool_Bool browser_window_back_available(struct browser_window *bw)
4511{
if (bw != NULL((void*)0) && bw->internal_nav) {
/* Internal nav, back is possible */
return true1;
}
return (bw && bw->history && browser_window_history_back_available(bw));
4517}


4520/* exported interface documented in netsurf/browser_window.h */
4521bool_Bool browser_window_forward_available(struct browser_window *bw)
4522{
return (bw && bw->history && browser_window_history_forward_available(bw));
4524}

4526/* exported interface documented in netsurf/browser_window.h */
4527bool_Bool browser_window_reload_available(struct browser_window *bw)
4528{
return (bw && bw->current_content && !bw->loading_content);
4530}


4533/* exported interface documented in netsurf/browser_window.h */
4534bool_Bool browser_window_stop_available(struct browser_window *bw)
4535{
return (bw && (bw->loading_content ||
       (bw->current_content &&
	(content_get_status(bw->current_content) !=
	 CONTENT_STATUS_DONE))));
4540}

4542/* exported interface documented in netsurf/browser_window.h */
4543bool_Bool
4544browser_window_exec(struct browser_window *bw, const char *src, size_t srclen)
4545{
assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 4546, __extension__ __PRETTY_FUNCTION__
));

if (!bw->current_content) {
NSLOG(netsurf, DEEPDEBUG, "Unable to exec, no content")do { if (NSLOG_LEVEL_DEEPDEBUG >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_DEEPDEBUG, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 4549
, }; nslog__log(&_nslog_ctx, "Unable to exec, no content"
); } } while(0);
return false0;
}

if (content_get_status(bw->current_content) != CONTENT_STATUS_DONE) {
NSLOG(netsurf, DEEPDEBUG, "Unable to exec, content not done")do { if (NSLOG_LEVEL_DEEPDEBUG >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_DEEPDEBUG, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 4554
, }; nslog__log(&_nslog_ctx, "Unable to exec, content not done"
); } } while(0);
return false0;
}

/* 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);
4562}


4565/* exported interface documented in browser_window.h */
4566nserror
4567browser_window_console_log(struct browser_window *bw,
	   browser_window_console_source src,
	   const char *msg,
	   size_t msglen,
	   browser_window_console_flags flags)
4572{
browser_window_console_flags log_level = flags & BW_CS_FLAG_LEVEL_MASK;
struct browser_window *root = browser_window_get_root(bw);

assert(msg != NULL)((msg != ((void*)0)) ? (void) (0) : __assert_fail ("msg != NULL"
, "desktop/browser_window.c", 4576, __extension__ __PRETTY_FUNCTION__
));
/* 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)do { if (NSLOG_LEVEL_DEEPDEBUG >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_DEEPDEBUG, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 4584
, }; nslog__log(&_nslog_ctx, "Logging message in %p targetted at %p"
, root, bw); } } while(0);
NSLOG(netsurf, DEEPDEBUG, "Log came from %s",do { if (NSLOG_LEVEL_DEEPDEBUG >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_DEEPDEBUG, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 4589
, }; nslog__log(&_nslog_ctx, "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"
)); } } while(0)
     ((src == BW_CS_INPUT) ? "user input" :do { if (NSLOG_LEVEL_DEEPDEBUG >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_DEEPDEBUG, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 4589
, }; nslog__log(&_nslog_ctx, "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"
)); } } while(0)
      (src == BW_CS_SCRIPT_ERROR) ? "script error" :do { if (NSLOG_LEVEL_DEEPDEBUG >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_DEEPDEBUG, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 4589
, }; nslog__log(&_nslog_ctx, "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"
)); } } while(0)
      (src == BW_CS_SCRIPT_CONSOLE) ? "script console" :do { if (NSLOG_LEVEL_DEEPDEBUG >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_DEEPDEBUG, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 4589
, }; nslog__log(&_nslog_ctx, "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"
)); } } while(0)
      "unknown input location"))do { if (NSLOG_LEVEL_DEEPDEBUG >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_DEEPDEBUG, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 4589
, }; nslog__log(&_nslog_ctx, "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"
)); } } while(0);

switch (log_level) {
case BW_CS_FLAG_LEVEL_DEBUG:
NSLOG(netsurf, DEBUG, "%.*s", (int)msglen, msg)do { if (NSLOG_LEVEL_DEBUG >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_DEBUG, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 4593
, }; nslog__log(&_nslog_ctx, "%.*s", (int)msglen, msg); }
 } while(0);
break;
case BW_CS_FLAG_LEVEL_LOG:
NSLOG(netsurf, VERBOSE, "%.*s", (int)msglen, msg)do { if (NSLOG_LEVEL_VERBOSE >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_VERBOSE, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 4596
, }; nslog__log(&_nslog_ctx, "%.*s", (int)msglen, msg); }
 } while(0);
break;
case BW_CS_FLAG_LEVEL_INFO:
NSLOG(netsurf, INFO, "%.*s", (int)msglen, msg)do { if (NSLOG_LEVEL_INFO >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_INFO, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 4599
, }; nslog__log(&_nslog_ctx, "%.*s", (int)msglen, msg); }
 } while(0);
break;
case BW_CS_FLAG_LEVEL_WARN:
NSLOG(netsurf, WARNING, "%.*s", (int)msglen, msg)do { if (NSLOG_LEVEL_WARNING >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_WARNING, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 4602
, }; nslog__log(&_nslog_ctx, "%.*s", (int)msglen, msg); }
 } while(0);
break;
case BW_CS_FLAG_LEVEL_ERROR:
NSLOG(netsurf, ERROR, "%.*s", (int)msglen, msg)do { if (NSLOG_LEVEL_ERROR >= NSLOG_LEVEL_VERBOSE) { static
 nslog_entry_context_t _nslog_ctx = { &__nslog_category_netsurf
, NSLOG_LEVEL_ERROR, "desktop/browser_window.c", sizeof("desktop/browser_window.c"
) - 1, __PRETTY_FUNCTION__, sizeof(__PRETTY_FUNCTION__) - 1, 4605
, }; nslog__log(&_nslog_ctx, "%.*s", (int)msglen, msg); }
 } while(0);
break;
default:
/* Unreachable */
break;
}

guit->window->console_log(root->window, src, msg, msglen, flags);

return NSERROR_OK;
4615}


4618/* Exported interface, documented in browser_private.h */
4619nserror
4620browser_window__reload_current_parameters(struct browser_window *bw)
4621{
assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 4622, __extension__ __PRETTY_FUNCTION__
));

if (bw->current_parameters.post_urlenc != NULL((void*)0)) {
free(bw->current_parameters.post_urlenc);
bw->current_parameters.post_urlenc = NULL((void*)0);
}

if (bw->current_parameters.post_multipart != NULL((void*)0)) {
fetch_multipart_data_destroy(bw->current_parameters.post_multipart);
bw->current_parameters.post_multipart = NULL((void*)0);
}

if (bw->current_parameters.url == NULL((void*)0)) {
/* 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 = false0;

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);
4646}

4648/* Exported interface, documented in browser_window.h */
4649browser_window_page_info_state browser_window_get_page_info_state(
const struct browser_window *bw)
4651{
lwc_string *scheme;
bool_Bool match;

assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 4655, __extension__ __PRETTY_FUNCTION__
));

/* Do we have any content?  If not -- UNKNOWN */
if (bw->current_content == NULL((void*)0)) {
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) = ((scheme) == (corestring_lwc_about))), lwc_error_ok
)
		&match)((*(&match) = ((scheme) == (corestring_lwc_about))), lwc_error_ok
) == lwc_error_ok &&
    (match == true1)) ||
   (lwc_string_isequal(scheme, corestring_lwc_data,((*(&match) = ((scheme) == (corestring_lwc_data))), lwc_error_ok
)
		&match)((*(&match) = ((scheme) == (corestring_lwc_data))), lwc_error_ok
) == lwc_error_ok &&
    (match == true1)) ||
   (lwc_string_isequal(scheme, corestring_lwc_resource,((*(&match) = ((scheme) == (corestring_lwc_resource))), lwc_error_ok
)
		&match)((*(&match) = ((scheme) == (corestring_lwc_resource))), lwc_error_ok
) == lwc_error_ok &&
    (match == true1))) {
lwc_string_unref(scheme){ lwc_string *__lwc_s = (scheme); if (__lwc_s != ((void*)0)) {
 __lwc_s->refcnt--; if ((__lwc_s->refcnt == 0) || ((__lwc_s
->refcnt == 1) && (__lwc_s->insensitive == __lwc_s
))) lwc_string_destroy(__lwc_s); } };
return PAGE_STATE_INTERNAL;
}

/* Is this file:/// ? */
if (lwc_string_isequal(scheme, corestring_lwc_file,((*(&match) = ((scheme) == (corestring_lwc_file))), lwc_error_ok
)
	       &match)((*(&match) = ((scheme) == (corestring_lwc_file))), lwc_error_ok
) == lwc_error_ok &&
   match == true1) {
lwc_string_unref(scheme){ lwc_string *__lwc_s = (scheme); if (__lwc_s != ((void*)0)) {
 __lwc_s->refcnt--; if ((__lwc_s->refcnt == 0) || ((__lwc_s
->refcnt == 1) && (__lwc_s->insensitive == __lwc_s
))) lwc_string_destroy(__lwc_s); } };
return PAGE_STATE_LOCAL;
}

/* If not https, from here on down that'd be insecure */
if ((lwc_string_isequal(scheme, corestring_lwc_https,((*(&match) = ((scheme) == (corestring_lwc_https))), lwc_error_ok
)
	&match)((*(&match) = ((scheme) == (corestring_lwc_https))), lwc_error_ok
) == lwc_error_ok &&
	(match == false0))) {
/* Some remote content, not https, therefore insecure */
lwc_string_unref(scheme){ lwc_string *__lwc_s = (scheme); if (__lwc_s != ((void*)0)) {
 __lwc_s->refcnt--; if ((__lwc_s->refcnt == 0) || ((__lwc_s
->refcnt == 1) && (__lwc_s->insensitive == __lwc_s
))) lwc_string_destroy(__lwc_s); } };
return PAGE_STATE_INSECURE;
}

lwc_string_unref(scheme){ lwc_string *__lwc_s = (scheme); if (__lwc_s != ((void*)0)) {
 __lwc_s->refcnt--; if ((__lwc_s->refcnt == 0) || ((__lwc_s
->refcnt == 1) && (__lwc_s->insensitive == __lwc_s
))) lwc_string_destroy(__lwc_s); } };

/* 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;
4710}

4712/* Exported interface, documented in browser_window.h */
4713nserror
4714browser_window_get_ssl_chain(struct browser_window *bw,
	     struct cert_chain **chain)
4716{
assert(bw != NULL)((bw != ((void*)0)) ? (void) (0) : __assert_fail ("bw != NULL"
, "desktop/browser_window.c", 4717, __extension__ __PRETTY_FUNCTION__
));

if (bw->current_cert_chain == NULL((void*)0)) {
return NSERROR_NOT_FOUND;
}

*chain = bw->current_cert_chain;

return NSERROR_OK;
4726}

4728/* Exported interface, documented in browser_window.h */
4729int browser_window_get_cookie_count(
const struct browser_window *bw)
4731{
int count = 0;
char *cookies = urldb_get_cookie(browser_window_access_url(bw), true1);
if (cookies == NULL((void*)0)) {
return 0;
}

for (char *c = cookies; *c != '\0'; c++) {
if (*c == ';')
	count++;
}

free(cookies);

return count;
4746}

4748/* Exported interface, documented in browser_window.h */
4749nserror browser_window_show_cookies(
const struct browser_window *bw)
4751{
nserror err;
nsurl *url = browser_window_access_url(bw);
lwc_string *host = nsurl_get_component(url, NSURL_HOST);
const char *string = (host != NULL((void*)0)) ? lwc_string_data(host)({((host != ((void*)0)) ? (void) (0) : __assert_fail ("host != NULL"
, "desktop/browser_window.c", 4755, __extension__ __PRETTY_FUNCTION__
)); (const char *)((host)+1);}) : NULL((void*)0);

err = guit->misc->present_cookies(string);

lwc_string_unref(host){ lwc_string *__lwc_s = (host); if (__lwc_s != ((void*)0)) { __lwc_s
->refcnt--; if ((__lwc_s->refcnt == 0) || ((__lwc_s->
refcnt == 1) && (__lwc_s->insensitive == __lwc_s))
) lwc_string_destroy(__lwc_s); } };
return err;
4761}

4763/* Exported interface, documented in browser_window.h */
4764nserror browser_window_show_certificates(struct browser_window *bw)
4765{
nserror res;
nsurl *url;

if (bw->current_cert_chain == NULL((void*)0)) {
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((void*)0),
			    bw,
			    NULL((void*)0));

nsurl_unref(url);
}

return res;
4787}