text: /* See LICENSE file for copyright and license details.
   *
   * To understand surf, start reading main().
   */
  #include <sys/file.h>
  #include <sys/socket.h>
  #include <sys/types.h>
  #include <sys/wait.h>
  #include <glib.h>
  #include <inttypes.h>
  #include <libgen.h>
  #include <limits.h>
  #include <pwd.h>
  #include <regex.h>
  #include <signal.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <unistd.h>
  
  #include <gdk/gdk.h>
  #include <gdk/gdkkeysyms.h>
  #include <gdk/gdkx.h>
  #include <glib/gstdio.h>
  #include <gtk/gtk.h>
  #include <gtk/gtkx.h>
  #include <gcr/gcr.h>
  #include <JavaScriptCore/JavaScript.h>
  #include <webkit2/webkit2.h>
  #include <X11/X.h>
  #include <X11/Xatom.h>
  #include <glib.h>
  
  #include "arg.h"
  #include "common.h"
  
  #define LENGTH(x)               (sizeof(x) / sizeof(x[0]))
  #define CLEANMASK(mask)         (mask & (MODKEY|GDK_SHIFT_MASK))
  
  enum { AtomFind, AtomGo, AtomUri, AtomLast };
  
  enum {
  	OnDoc   = WEBKIT_HIT_TEST_RESULT_CONTEXT_DOCUMENT,
  	OnLink  = WEBKIT_HIT_TEST_RESULT_CONTEXT_LINK,
  	OnImg   = WEBKIT_HIT_TEST_RESULT_CONTEXT_IMAGE,
  	OnMedia = WEBKIT_HIT_TEST_RESULT_CONTEXT_MEDIA,
  	OnEdit  = WEBKIT_HIT_TEST_RESULT_CONTEXT_EDITABLE,
  	OnBar   = WEBKIT_HIT_TEST_RESULT_CONTEXT_SCROLLBAR,
  	OnSel   = WEBKIT_HIT_TEST_RESULT_CONTEXT_SELECTION,
  	OnAny   = OnDoc | OnLink | OnImg | OnMedia | OnEdit | OnBar | OnSel,
  };
  
  typedef enum {
  	AcceleratedCanvas,
  	AccessMicrophone,
  	AccessWebcam,
  	CaretBrowsing,
  	Certificate,
  	CookiePolicies,
  	DiskCache,
  	DefaultCharset,
  	DNSPrefetch,
  	Ephemeral,
  	FileURLsCrossAccess,
  	FontSize,
  	FrameFlattening,
  	Geolocation,
  	HideBackground,
  	Inspector,
  	Java,
  	JavaScript,
  	KioskMode,
  	LoadImages,
  	MediaManualPlay,
  	Plugins,
  	PreferredLanguages,
  	RunInFullscreen,
  	ScrollBars,
  	ShowIndicators,
  	SiteQuirks,
  	SmoothScrolling,
  	SpellChecking,
  	SpellLanguages,
  	StrictTLS,
  	Style,
  	WebGL,
  	ZoomLevel,
  	ParameterLast
  } ParamName;
  
  typedef union {
  	int i;
  	float f;
  	const void *v;
  } Arg;
  
  typedef struct {
  	Arg val;
  	int prio;
  } Parameter;
  
  typedef struct Client {
  	GtkWidget *win;
  	WebKitWebView *view;
  	WebKitWebInspector *inspector;
  	WebKitFindController *finder;
  	WebKitHitTestResult *mousepos;
  	GTlsCertificate *cert, *failedcert;
  	GTlsCertificateFlags tlserr;
  	Window xid;
  	guint64 pageid;
  	int progress, fullscreen, https, insecure, errorpage;
  	const char *title, *overtitle, *targeturi;
  	const char *needle;
  	struct Client *next;
  } Client;
  
  typedef struct {
  	guint mod;
  	guint keyval;
  	void (*func)(Client *c, const Arg *a);
  	const Arg arg;
  } Key;
  
  typedef struct {
  	unsigned int target;
  	unsigned int mask;
  	guint button;
  	void (*func)(Client *c, const Arg *a, WebKitHitTestResult *h);
  	const Arg arg;
  	unsigned int stopevent;
  } Button;
  
  typedef struct {
  	char *token;
  	char *uri;
  } SearchEngine;
  
  typedef struct {
  	const char *uri;
  	Parameter config[ParameterLast];
  	regex_t re;
  } UriParameters;
  
  typedef struct {
  	char *regex;
  	char *file;
  	regex_t re;
  } SiteSpecific;
  
  /* Surf */
  static void die(const char *errstr, ...);
  static void usage(void);
  static void setup(void);
  static void sigchld(int unused);
  static void sighup(int unused);
  static char *buildfile(const char *path);
  static char *buildpath(const char *path);
  static char *untildepath(const char *path);
  static const char *getuserhomedir(const char *user);
  static const char *getcurrentuserhomedir(void);
  static Client *newclient(Client *c);
  static void loaduri(Client *c, const Arg *a);
  static const char *geturi(Client *c);
  static void setatom(Client *c, int a, const char *v);
  static const char *getatom(Client *c, int a);
  static void updatetitle(Client *c);
  static void gettogglestats(Client *c);
  static void getpagestats(Client *c);
  static WebKitCookieAcceptPolicy cookiepolicy_get(void);
  static char cookiepolicy_set(const WebKitCookieAcceptPolicy p);
  static void seturiparameters(Client *c, const char *uri, ParamName *params);
  static void setparameter(Client *c, int refresh, ParamName p, const Arg *a);
  static const char *getcert(const char *uri);
  static void setcert(Client *c, const char *file);
  static const char *getstyle(const char *uri);
  static void setstyle(Client *c, const char *file);
  static void runscript(Client *c);
  static void evalscript(Client *c, const char *jsstr, ...);
  static void updatewinid(Client *c);
  static void handleplumb(Client *c, const char *uri);
  static void newwindow(Client *c, const Arg *a, int noembed);
  static void spawn(Client *c, const Arg *a);
  static void msgext(Client *c, char type, const Arg *a);
  static void destroyclient(Client *c);
  static void cleanup(void);
  
  /* GTK/WebKit */
  static WebKitWebView *newview(Client *c, WebKitWebView *rv);
  static void initwebextensions(WebKitWebContext *wc, Client *c);
  static GtkWidget *createview(WebKitWebView *v, WebKitNavigationAction *a,
                               Client *c);
  static gboolean buttonreleased(GtkWidget *w, GdkEvent *e, Client *c);
  static GdkFilterReturn processx(GdkXEvent *xevent, GdkEvent *event,
                                  gpointer d);
  static gboolean winevent(GtkWidget *w, GdkEvent *e, Client *c);
  static gboolean readsock(GIOChannel *s, GIOCondition ioc, gpointer unused);
  static void showview(WebKitWebView *v, Client *c);
  static GtkWidget *createwindow(Client *c);
  static gboolean loadfailedtls(WebKitWebView *v, gchar *uri,
                                GTlsCertificate *cert,
                                GTlsCertificateFlags err, Client *c);
  static void loadchanged(WebKitWebView *v, WebKitLoadEvent e, Client *c);
  static void progresschanged(WebKitWebView *v, GParamSpec *ps, Client *c);
  static void titlechanged(WebKitWebView *view, GParamSpec *ps, Client *c);
  static void mousetargetchanged(WebKitWebView *v, WebKitHitTestResult *h,
                                 guint modifiers, Client *c);
  static gboolean permissionrequested(WebKitWebView *v,
                                      WebKitPermissionRequest *r, Client *c);
  static gboolean decidepolicy(WebKitWebView *v, WebKitPolicyDecision *d,
                               WebKitPolicyDecisionType dt, Client *c);
  static void decidenavigation(WebKitPolicyDecision *d, Client *c);
  static void decidenewwindow(WebKitPolicyDecision *d, Client *c);
  static void decideresource(WebKitPolicyDecision *d, Client *c);
  static void insecurecontent(WebKitWebView *v, WebKitInsecureContentEvent e,
                              Client *c);
  static void downloadstarted(WebKitWebContext *wc, WebKitDownload *d,
                              Client *c);
  static void responsereceived(WebKitDownload *d, GParamSpec *ps, Client *c);
  static void download(Client *c, WebKitURIResponse *r);
  static void webprocessterminated(WebKitWebView *v,
                                   WebKitWebProcessTerminationReason r,
                                   Client *c);
  static void closeview(WebKitWebView *v, Client *c);
  static void destroywin(GtkWidget* w, Client *c);
  static gchar *parseuri(const gchar *uri);
  
  /* Hotkeys */
  static void pasteuri(GtkClipboard *clipboard, const char *text, gpointer d);
  static void reload(Client *c, const Arg *a);
  static void print(Client *c, const Arg *a);
  static void showcert(Client *c, const Arg *a);
  static void clipboard(Client *c, const Arg *a);
  static void zoom(Client *c, const Arg *a);
  static void scrollv(Client *c, const Arg *a);
  static void scrollh(Client *c, const Arg *a);
  static void navigate(Client *c, const Arg *a);
  static void stop(Client *c, const Arg *a);
  static void toggle(Client *c, const Arg *a);
  static void togglefullscreen(Client *c, const Arg *a);
  static void togglecookiepolicy(Client *c, const Arg *a);
  static void toggleinspector(Client *c, const Arg *a);
  static void find(Client *c, const Arg *a);
  
  /* Buttons */
  static void clicknavigate(Client *c, const Arg *a, WebKitHitTestResult *h);
  static void clicknewwindow(Client *c, const Arg *a, WebKitHitTestResult *h);
  static void clickexternplayer(Client *c, const Arg *a, WebKitHitTestResult *h);
  
  static char winid[64];
  static char togglestats[12];
  static char pagestats[2];
  static Atom atoms[AtomLast];
  static Window embed;
  static int showxid;
  static int cookiepolicy;
  static Display *dpy;
  static Client *clients;
  static GdkDevice *gdkkb;
  static char *stylefile;
  static const char *useragent;
  static Parameter *curconfig;
  static int modparams[ParameterLast];
  static int spair[2];
  char *argv0;
  
  static ParamName loadtransient[] = {
  	Certificate,
  	CookiePolicies,
  	DiskCache,
  	DNSPrefetch,
  	FileURLsCrossAccess,
  	JavaScript,
  	LoadImages,
  	PreferredLanguages,
  	ShowIndicators,
  	StrictTLS,
  	ParameterLast
  };
  
  static ParamName loadcommitted[] = {
  	AcceleratedCanvas,
  //	AccessMicrophone,
  //	AccessWebcam,
  	CaretBrowsing,
  	DefaultCharset,
  	FontSize,
  	FrameFlattening,
  	Geolocation,
  	HideBackground,
  	Inspector,
  	Java,
  //	KioskMode,
  	MediaManualPlay,
  	Plugins,
  	RunInFullscreen,
  	ScrollBars,
  	SiteQuirks,
  	SmoothScrolling,
  	SpellChecking,
  	SpellLanguages,
  	Style,
  	ZoomLevel,
  	ParameterLast
  };
  
  static ParamName loadfinished[] = {
  	ParameterLast
  };
  
  /* configuration, allows nested code to access above variables */
  #include "config.h"
  
  void
  die(const char *errstr, ...)
  {
         va_list ap;
  
         va_start(ap, errstr);
         vfprintf(stderr, errstr, ap);
         va_end(ap);
         exit(1);
  }
  
  void
  usage(void)
  {
  	die("usage: surf [-bBdDfFgGiIkKmMnNpPsStTvwxX]\n"
  	    "[-a cookiepolicies ] [-c cookiefile] [-C stylefile] [-e xid]\n"
  	    "[-r scriptfile] [-u useragent] [-z zoomlevel] [uri]\n");
  }
  
  void
  setup(void)
  {
  	GIOChannel *gchanin;
  	GdkDisplay *gdpy;
  	int i, j;
  
  	/* clean up any zombies immediately */
  	sigchld(0);
  	if (signal(SIGHUP, sighup) == SIG_ERR)
  		die("Can't install SIGHUP handler");
  
  	if (!(dpy = XOpenDisplay(NULL)))
  		die("Can't open default display");
  
  	/* atoms */
  	atoms[AtomFind] = XInternAtom(dpy, "_SURF_FIND", False);
  	atoms[AtomGo] = XInternAtom(dpy, "_SURF_GO", False);
  	atoms[AtomUri] = XInternAtom(dpy, "_SURF_URI", False);
  
  	gtk_init(NULL, NULL);
  
  	gdpy = gdk_display_get_default();
  
  	curconfig = defconfig;
  
  	/* dirs and files */
  	cookiefile = buildfile(cookiefile);
  	scriptfile = buildfile(scriptfile);
  	certdir    = buildpath(certdir);
  	if (curconfig[Ephemeral].val.i)
  		cachedir = NULL;
  	else
  		cachedir   = buildpath(cachedir);
  
  	gdkkb = gdk_seat_get_keyboard(gdk_display_get_default_seat(gdpy));
  
  	if (socketpair(AF_UNIX, SOCK_DGRAM, 0, spair) < 0) {
  		fputs("Unable to create sockets\n", stderr);
  		spair[0] = spair[1] = -1;
  	} else {
  		gchanin = g_io_channel_unix_new(spair[0]);
  		g_io_channel_set_encoding(gchanin, NULL, NULL);
  		g_io_channel_set_flags(gchanin, g_io_channel_get_flags(gchanin)
  		                       | G_IO_FLAG_NONBLOCK, NULL);
  		g_io_channel_set_close_on_unref(gchanin, TRUE);
  		g_io_add_watch(gchanin, G_IO_IN, readsock, NULL);
  	}
  
  
  	for (i = 0; i < LENGTH(certs); ++i) {
  		if (!regcomp(&(certs[i].re), certs[i].regex, REG_EXTENDED)) {
  			certs[i].file = g_strconcat(certdir, "/", certs[i].file,
  			                            NULL);
  		} else {
  			fprintf(stderr, "Could not compile regex: %s\n",
  			        certs[i].regex);
  			certs[i].regex = NULL;
  		}
  	}
  
  	if (!stylefile) {
  		styledir = buildpath(styledir);
  		for (i = 0; i < LENGTH(styles); ++i) {
  			if (!regcomp(&(styles[i].re), styles[i].regex,
  			    REG_EXTENDED)) {
  				styles[i].file = g_strconcat(styledir, "/",
  				                    styles[i].file, NULL);
  			} else {
  				fprintf(stderr, "Could not compile regex: %s\n",
  				        styles[i].regex);
  				styles[i].regex = NULL;
  			}
  		}
  		g_free(styledir);
  	} else {
  		stylefile = buildfile(stylefile);
  	}
  
  	for (i = 0; i < LENGTH(uriparams); ++i) {
  		if (regcomp(&(uriparams[i].re), uriparams[i].uri,
  		    REG_EXTENDED)) {
  			fprintf(stderr, "Could not compile regex: %s\n",
  			        uriparams[i].uri);
  			uriparams[i].uri = NULL;
  			continue;
  		}
  
  		/* copy default parameters with higher priority */
  		for (j = 0; j < ParameterLast; ++j) {
  			if (defconfig[j].prio >= uriparams[i].config[j].prio)
  				uriparams[i].config[j] = defconfig[j];
  		}
  	}
  }
  
  void
  sigchld(int unused)
  {
  	if (signal(SIGCHLD, sigchld) == SIG_ERR)
  		die("Can't install SIGCHLD handler");
  	while (waitpid(-1, NULL, WNOHANG) > 0)
  		;
  }
  
  void
  sighup(int unused)
  {
  	Arg a = { .i = 0 };
  	Client *c;
  
  	for (c = clients; c; c = c->next)
  		reload(c, &a);
  }
  
  char *
  buildfile(const char *path)
  {
  	char *dname, *bname, *bpath, *fpath;
  	FILE *f;
  
  	dname = g_path_get_dirname(path);
  	bname = g_path_get_basename(path);
  
  	bpath = buildpath(dname);
  	g_free(dname);
  
  	fpath = g_build_filename(bpath, bname, NULL);
  	g_free(bpath);
  	g_free(bname);
  
  	if (!(f = fopen(fpath, "a")))
  		die("Could not open file: %s\n", fpath);
  
  	g_chmod(fpath, 0600); /* always */
  	fclose(f);
  
  	return fpath;
  }
  
  static const char*
  getuserhomedir(const char *user)
  {
  	struct passwd *pw = getpwnam(user);
  
  	if (!pw)
  		die("Can't get user %s login information.\n", user);
  
  	return pw->pw_dir;
  }
  
  static const char*
  getcurrentuserhomedir(void)
  {
  	const char *homedir;
  	const char *user;
  	struct passwd *pw;
  
  	homedir = getenv("HOME");
  	if (homedir)
  		return homedir;
  
  	user = getenv("USER");
  	if (user)
  		return getuserhomedir(user);
  
  	pw = getpwuid(getuid());
  	if (!pw)
  		die("Can't get current user home directory\n");
  
  	return pw->pw_dir;
  }
  
  char *
  buildpath(const char *path)
  {
  	char *apath, *fpath;
  
  	if (path[0] == '~')
  		apath = untildepath(path);
  	else
  		apath = g_strdup(path);
  
  	/* creating directory */
  	if (g_mkdir_with_parents(apath, 0700) < 0)
  		die("Could not access directory: %s\n", apath);
  
  	fpath = realpath(apath, NULL);
  	g_free(apath);
  
  	return fpath;
  }
  
  char *
  untildepath(const char *path)
  {
         char *apath, *name, *p;
         const char *homedir;
  
         if (path[1] == '/' || path[1] == '\0') {
                 p = (char *)&path[1];
                 homedir = getcurrentuserhomedir();
         } else {
                 if ((p = strchr(path, '/')))
                         name = g_strndup(&path[1], p - (path + 1));
                 else
                         name = g_strdup(&path[1]);
  
                 homedir = getuserhomedir(name);
                 g_free(name);
         }
         apath = g_build_filename(homedir, p, NULL);
         return apath;
  }
  
  Client *
  newclient(Client *rc)
  {
  	Client *c;
  
  	if (!(c = calloc(1, sizeof(Client))))
  		die("Cannot malloc!\n");
  
  	c->next = clients;
  	clients = c;
  
  	c->progress = 100;
  	c->view = newview(c, rc ? rc->view : NULL);
  
  	return c;
  }
  
  void
  loaduri(Client *c, const Arg *a)
  {
  	struct stat st;
  	char *url, *path, *apath;
  	const char *uri = a->v;
  
  	if (g_strcmp0(uri, "") == 0)
  		return;
  
  	if (g_str_has_prefix(uri, "http://")  ||
  	    g_str_has_prefix(uri, "https://") ||
  	    g_str_has_prefix(uri, "file://")  ||
  	    g_str_has_prefix(uri, "about:")) {
  		url = g_strdup(uri);
  	} else {
  		if (uri[0] == '~')
  			apath = untildepath(uri);
  		else
  			apath = (char *)uri;
  		if (!stat(apath, &st) && (path = realpath(apath, NULL))) {
  			url = g_strdup_printf("file://%s", path);
  			free(path);
  		} else {
  		url = parseuri(uri);
  		}
  		if (apath != uri)
  			free(apath);
  	}
  
  	setatom(c, AtomUri, url);
  
  	if (strcmp(url, geturi(c)) == 0) {
  		reload(c, a);
  	} else {
  		webkit_web_view_load_uri(c->view, url);
  		updatetitle(c);
  	}
  
  	g_free(url);
  }
  
  const char *
  geturi(Client *c)
  {
  	const char *uri;
  
  	if (!(uri = webkit_web_view_get_uri(c->view)))
  		uri = "about:blank";
  	return uri;
  }
  
  void
  setatom(Client *c, int a, const char *v)
  {
  	XChangeProperty(dpy, c->xid,
  	                atoms[a], XA_STRING, 8, PropModeReplace,
  	                (unsigned char *)v, strlen(v) + 1);
  	XSync(dpy, False);
  }
  
  const char *
  getatom(Client *c, int a)
  {
  	static char buf[BUFSIZ];
  	Atom adummy;
  	int idummy;
  	unsigned long ldummy;
  	unsigned char *p = NULL;
  
  	XSync(dpy, False);
  	XGetWindowProperty(dpy, c->xid, atoms[a], 0L, BUFSIZ, False, XA_STRING,
  	                   &adummy, &idummy, &ldummy, &ldummy, &p);
  	if (p)
  		strncpy(buf, (char *)p, LENGTH(buf) - 1);
  	else
  		buf[0] = '\0';
  	XFree(p);
  
  	return buf;
  }
  
  void
  updatetitle(Client *c)
  {
  	char *title;
  	const char *name = c->overtitle ? c->overtitle :
  	                   c->title ? c->title : "";
  
  	if (curconfig[ShowIndicators].val.i) {
  		gettogglestats(c);
  		getpagestats(c);
  
  		if (c->progress != 100)
  			title = g_strdup_printf("[%i%%] %s:%s | %s",
  			        c->progress, togglestats, pagestats, name);
  		else
  			title = g_strdup_printf("%s:%s | %s",
  			        togglestats, pagestats, name);
  
  		gtk_window_set_title(GTK_WINDOW(c->win), title);
  		g_free(title);
  	} else {
  		gtk_window_set_title(GTK_WINDOW(c->win), name);
  	}
  }
  
  void
  gettogglestats(Client *c)
  {
  	togglestats[0] = cookiepolicy_set(cookiepolicy_get());
  	togglestats[1] = curconfig[CaretBrowsing].val.i ?   'C' : 'c';
  	togglestats[2] = curconfig[Geolocation].val.i ?     'G' : 'g';
  	togglestats[3] = curconfig[DiskCache].val.i ?       'D' : 'd';
  	togglestats[4] = curconfig[LoadImages].val.i ?      'I' : 'i';
  	togglestats[5] = curconfig[JavaScript].val.i ?      'S' : 's';
  	togglestats[6] = curconfig[Plugins].val.i ?         'V' : 'v';
  	togglestats[7] = curconfig[Style].val.i ?           'M' : 'm';
  	togglestats[8] = curconfig[FrameFlattening].val.i ? 'F' : 'f';
  	togglestats[9] = curconfig[Certificate].val.i ?     'X' : 'x';
  	togglestats[10] = curconfig[StrictTLS].val.i ?      'T' : 't';
  	togglestats[11] = '\0';
  }
  
  void
  getpagestats(Client *c)
  {
  	if (c->https)
  		pagestats[0] = (c->tlserr || c->insecure) ?  'U' : 'T';
  	else
  		pagestats[0] = '-';
  	pagestats[1] = '\0';
  }
  
  WebKitCookieAcceptPolicy
  cookiepolicy_get(void)
  {
  	switch (((char *)curconfig[CookiePolicies].val.v)[cookiepolicy]) {
  	case 'a':
  		return WEBKIT_COOKIE_POLICY_ACCEPT_NEVER;
  	case '@':
  		return WEBKIT_COOKIE_POLICY_ACCEPT_NO_THIRD_PARTY;
  	default: /* fallthrough */
  	case 'A':
  		return WEBKIT_COOKIE_POLICY_ACCEPT_ALWAYS;
  	}
  }
  
  char
  cookiepolicy_set(const WebKitCookieAcceptPolicy p)
  {
  	switch (p) {
  	case WEBKIT_COOKIE_POLICY_ACCEPT_NEVER:
  		return 'a';
  	case WEBKIT_COOKIE_POLICY_ACCEPT_NO_THIRD_PARTY:
  		return '@';
  	default: /* fallthrough */
  	case WEBKIT_COOKIE_POLICY_ACCEPT_ALWAYS:
  		return 'A';
  	}
  }
  
  void
  seturiparameters(Client *c, const char *uri, ParamName *params)
  {
  	Parameter *config, *uriconfig = NULL;
  	int i, p;
  
  	for (i = 0; i < LENGTH(uriparams); ++i) {
  		if (uriparams[i].uri &&
  		    !regexec(&(uriparams[i].re), uri, 0, NULL, 0)) {
  			uriconfig = uriparams[i].config;
  			break;
  		}
  	}
  
  	curconfig = uriconfig ? uriconfig : defconfig;
  
  	for (i = 0; (p = params[i]) != ParameterLast; ++i) {
  		switch(p) {
  		default: /* FALLTHROUGH */
  			if (!(defconfig[p].prio < curconfig[p].prio ||
  			    defconfig[p].prio < modparams[p]))
  				continue;
  		case Certificate:
  		case CookiePolicies:
  		case Style:
  			setparameter(c, 0, p, &curconfig[p].val);
  		}
  	}
  }
  
  void
  setparameter(Client *c, int refresh, ParamName p, const Arg *a)
  {
  	GdkRGBA bgcolor = { 0 };
  	WebKitSettings *s = webkit_web_view_get_settings(c->view);
  
  	modparams[p] = curconfig[p].prio;
  
  	switch (p) {
  	case AcceleratedCanvas:
  		webkit_settings_set_enable_accelerated_2d_canvas(s, a->i);
  		break;
  	case AccessMicrophone:
  		return; /* do nothing */
  	case AccessWebcam:
  		return; /* do nothing */
  	case CaretBrowsing:
  		webkit_settings_set_enable_caret_browsing(s, a->i);
  		refresh = 0;
  		break;
  	case Certificate:
  		if (a->i)
  			setcert(c, geturi(c));
  		return; /* do not update */
  	case CookiePolicies:
  		webkit_cookie_manager_set_accept_policy(
  		    webkit_web_context_get_cookie_manager(
  		    webkit_web_view_get_context(c->view)),
  		    cookiepolicy_get());
  		refresh = 0;
  		break;
  	case DiskCache:
  		webkit_web_context_set_cache_model(
  		    webkit_web_view_get_context(c->view), a->i ?
  		    WEBKIT_CACHE_MODEL_WEB_BROWSER :
  		    WEBKIT_CACHE_MODEL_DOCUMENT_VIEWER);
  		return; /* do not update */
  	case DefaultCharset:
  		webkit_settings_set_default_charset(s, a->v);
  		return; /* do not update */
  	case DNSPrefetch:
  		webkit_settings_set_enable_dns_prefetching(s, a->i);
  		return; /* do not update */
  	case FileURLsCrossAccess:
  		webkit_settings_set_allow_file_access_from_file_urls(s, a->i);
  		webkit_settings_set_allow_universal_access_from_file_urls(s, a->i);
  		return; /* do not update */
  	case FontSize:
  		webkit_settings_set_default_font_size(s, a->i);
  		return; /* do not update */
  	case FrameFlattening:
  		webkit_settings_set_enable_frame_flattening(s, a->i);
  		break;
  	case Geolocation:
  		refresh = 0;
  		break;
  	case HideBackground:
  		if (a->i)
  			webkit_web_view_set_background_color(c->view, &bgcolor);
  		return; /* do not update */
  	case Inspector:
  		webkit_settings_set_enable_developer_extras(s, a->i);
  		return; /* do not update */
  	case Java:
  		webkit_settings_set_enable_java(s, a->i);
  		return; /* do not update */
  	case JavaScript:
  		webkit_settings_set_enable_javascript(s, a->i);
  		break;
  	case KioskMode:
  		return; /* do nothing */
  	case LoadImages:
  		webkit_settings_set_auto_load_images(s, a->i);
  		break;
  	case MediaManualPlay:
  		webkit_settings_set_media_playback_requires_user_gesture(s, a->i);
  		break;
  	case Plugins:
  		webkit_settings_set_enable_plugins(s, a->i);
  		break;
  	case PreferredLanguages:
  		return; /* do nothing */
  	case RunInFullscreen:
  		return; /* do nothing */
  	case ScrollBars:
  		/* Disabled until we write some WebKitWebExtension for
  		 * manipulating the DOM directly.
  		enablescrollbars = !enablescrollbars;
  		evalscript(c, "document.documentElement.style.overflow = '%s'",
  		    enablescrollbars ? "auto" : "hidden");
  		*/
  		return; /* do not update */
  	case ShowIndicators:
  		break;
  	case SmoothScrolling:
  		webkit_settings_set_enable_smooth_scrolling(s, a->i);
  		return; /* do not update */
  	case SiteQuirks:
  		webkit_settings_set_enable_site_specific_quirks(s, a->i);
  		break;
  	case SpellChecking:
  		webkit_web_context_set_spell_checking_enabled(
  		    webkit_web_view_get_context(c->view), a->i);
  		return; /* do not update */
  	case SpellLanguages:
  		return; /* do nothing */
  	case StrictTLS:
  		webkit_web_context_set_tls_errors_policy(
  		    webkit_web_view_get_context(c->view), a->i ?
  		    WEBKIT_TLS_ERRORS_POLICY_FAIL :
  		    WEBKIT_TLS_ERRORS_POLICY_IGNORE);
  		break;
  	case Style:
  		webkit_user_content_manager_remove_all_style_sheets(
  		    webkit_web_view_get_user_content_manager(c->view));
  		if (a->i)
  			setstyle(c, getstyle(geturi(c)));
  		refresh = 0;
  		break;
  	case WebGL:
  		webkit_settings_set_enable_webgl(s, a->i);
  		break;
  	case ZoomLevel:
  		webkit_web_view_set_zoom_level(c->view, a->f);
  		return; /* do not update */
  	default:
  		return; /* do nothing */
  	}
  
  	updatetitle(c);
  	if (refresh)
  		reload(c, a);
  }
  
  const char *
  getcert(const char *uri)
  {
  	int i;
  
  	for (i = 0; i < LENGTH(certs); ++i) {
  		if (certs[i].regex &&
  		    !regexec(&(certs[i].re), uri, 0, NULL, 0))
  			return certs[i].file;
  	}
  
  	return NULL;
  }
  
  void
  setcert(Client *c, const char *uri)
  {
  	const char *file = getcert(uri);
  	char *host;
  	GTlsCertificate *cert;
  
  	if (!file)
  		return;
  
  	if (!(cert = g_tls_certificate_new_from_file(file, NULL))) {
  		fprintf(stderr, "Could not read certificate file: %s\n", file);
  		return;
  	}
  
  	if ((uri = strstr(uri, "https://"))) {
  		uri += sizeof("https://") - 1;
  		host = g_strndup(uri, strchr(uri, '/') - uri);
  		webkit_web_context_allow_tls_certificate_for_host(
  		    webkit_web_view_get_context(c->view), cert, host);
  		g_free(host);
  	}
  
  	g_object_unref(cert);
  
  }
  
  const char *
  getstyle(const char *uri)
  {
  	int i;
  
  	if (stylefile)
  		return stylefile;
  
  	for (i = 0; i < LENGTH(styles); ++i) {
  		if (styles[i].regex &&
  		    !regexec(&(styles[i].re), uri, 0, NULL, 0))
  			return styles[i].file;
  	}
  
  	return "";
  }
  
  void
  setstyle(Client *c, const char *file)
  {
  	gchar *style;
  
  	if (!g_file_get_contents(file, &style, NULL, NULL)) {
  		fprintf(stderr, "Could not read style file: %s\n", file);
  		return;
  	}
  
  	webkit_user_content_manager_add_style_sheet(
  	    webkit_web_view_get_user_content_manager(c->view),
  	    webkit_user_style_sheet_new(style,
  	    WEBKIT_USER_CONTENT_INJECT_ALL_FRAMES,
  	    WEBKIT_USER_STYLE_LEVEL_USER,
  	    NULL, NULL));
  
  	g_free(style);
  }
  
  void
  runscript(Client *c)
  {
  	gchar *script;
  	gsize l;
  
  	if (g_file_get_contents(scriptfile, &script, &l, NULL) && l)
  		evalscript(c, "%s", script);
  	g_free(script);
  }
  
  void
  evalscript(Client *c, const char *jsstr, ...)
  {
  	va_list ap;
  	gchar *script;
  
  	va_start(ap, jsstr);
  	script = g_strdup_vprintf(jsstr, ap);
  	va_end(ap);
  
  	webkit_web_view_run_javascript(c->view, script, NULL, NULL, NULL);
  	g_free(script);
  }
  
  void
  updatewinid(Client *c)
  {
  	snprintf(winid, LENGTH(winid), "%lu", c->xid);
  }
  
  void
  handleplumb(Client *c, const char *uri)
  {
  	Arg a = (Arg)PLUMB(uri);
  	spawn(c, &a);
  }
  
  void
  newwindow(Client *c, const Arg *a, int noembed)
  {
  	int i = 0;
  	char tmp[64];
  	const char *cmd[29], *uri;
  	const Arg arg = { .v = cmd };
  
  	cmd[i++] = argv0;
  	cmd[i++] = "-a";
  	cmd[i++] = curconfig[CookiePolicies].val.v;
  	cmd[i++] = curconfig[ScrollBars].val.i ? "-B" : "-b";
  	if (cookiefile && g_strcmp0(cookiefile, "")) {
  		cmd[i++] = "-c";
  		cmd[i++] = cookiefile;
  	}
  	if (stylefile && g_strcmp0(stylefile, "")) {
  		cmd[i++] = "-C";
  		cmd[i++] = stylefile;
  	}
  	cmd[i++] = curconfig[DiskCache].val.i ? "-D" : "-d";
  	if (embed && !noembed) {
  		cmd[i++] = "-e";
  		snprintf(tmp, LENGTH(tmp), "%lu", embed);
  		cmd[i++] = tmp;
  	}
  	cmd[i++] = curconfig[RunInFullscreen].val.i ? "-F" : "-f" ;
  	cmd[i++] = curconfig[Geolocation].val.i ?     "-G" : "-g" ;
  	cmd[i++] = curconfig[LoadImages].val.i ?      "-I" : "-i" ;
  	cmd[i++] = curconfig[KioskMode].val.i ?       "-K" : "-k" ;
  	cmd[i++] = curconfig[Style].val.i ?           "-M" : "-m" ;
  	cmd[i++] = curconfig[Inspector].val.i ?       "-N" : "-n" ;
  	cmd[i++] = curconfig[Plugins].val.i ?         "-P" : "-p" ;
  	if (scriptfile && g_strcmp0(scriptfile, "")) {
  		cmd[i++] = "-r";
  		cmd[i++] = scriptfile;
  	}
  	cmd[i++] = curconfig[JavaScript].val.i ? "-S" : "-s";
  	cmd[i++] = curconfig[StrictTLS].val.i ? "-T" : "-t";
  	if (fulluseragent && g_strcmp0(fulluseragent, "")) {
  		cmd[i++] = "-u";
  		cmd[i++] = fulluseragent;
  	}
  	if (showxid)
  		cmd[i++] = "-w";
  	cmd[i++] = curconfig[Certificate].val.i ? "-X" : "-x" ;
  	/* do not keep zoom level */
  	cmd[i++] = "--";
  	if ((uri = a->v))
  		cmd[i++] = uri;
  	cmd[i] = NULL;
  
  	spawn(c, &arg);
  }
  
  void
  spawn(Client *c, const Arg *a)
  {
  	if (fork() == 0) {
  		if (dpy)
  			close(ConnectionNumber(dpy));
  		close(spair[0]);
  		close(spair[1]);
  		setsid();
  		execvp(((char **)a->v)[0], (char **)a->v);
  		fprintf(stderr, "%s: execvp %s", argv0, ((char **)a->v)[0]);
  		perror(" failed");
  		exit(1);
  	}
  }
  
  void
  destroyclient(Client *c)
  {
  	Client *p;
  
  	webkit_web_view_stop_loading(c->view);
  	/* Not needed, has already been called
  	gtk_widget_destroy(c->win);
  	 */
  
  	for (p = clients; p && p->next != c; p = p->next)
  		;
  	if (p)
  		p->next = c->next;
  	else
  		clients = c->next;
  	free(c);
  }
  
  void
  cleanup(void)
  {
  	while (clients)
  		destroyclient(clients);
  
  	close(spair[0]);
  	close(spair[1]);
  	g_free(cookiefile);
  	g_free(scriptfile);
  	g_free(stylefile);
  	g_free(cachedir);
  	XCloseDisplay(dpy);
  }
  
  WebKitWebView *
  newview(Client *c, WebKitWebView *rv)
  {
  	WebKitWebView *v;
  	WebKitSettings *settings;
  	WebKitWebContext *context;
  	WebKitCookieManager *cookiemanager;
  	WebKitUserContentManager *contentmanager;
  
  	/* Webview */
  	if (rv) {
  		v = WEBKIT_WEB_VIEW(webkit_web_view_new_with_related_view(rv));
  	} else {
  		settings = webkit_settings_new_with_settings(
  		   "allow-file-access-from-file-urls", curconfig[FileURLsCrossAccess].val.i,
  		   "allow-universal-access-from-file-urls", curconfig[FileURLsCrossAccess].val.i,
  		   "auto-load-images", curconfig[LoadImages].val.i,
  		   "default-charset", curconfig[DefaultCharset].val.v,
  		   "default-font-size", curconfig[FontSize].val.i,
  		   "enable-caret-browsing", curconfig[CaretBrowsing].val.i,
  		   "enable-developer-extras", curconfig[Inspector].val.i,
  		   "enable-dns-prefetching", curconfig[DNSPrefetch].val.i,
  		   "enable-frame-flattening", curconfig[FrameFlattening].val.i,
  		   "enable-html5-database", curconfig[DiskCache].val.i,
  		   "enable-html5-local-storage", curconfig[DiskCache].val.i,
  		   "enable-java", curconfig[Java].val.i,
  		   "enable-javascript", curconfig[JavaScript].val.i,
  		   "enable-plugins", curconfig[Plugins].val.i,
  		   "enable-accelerated-2d-canvas", curconfig[AcceleratedCanvas].val.i,
  		   "enable-site-specific-quirks", curconfig[SiteQuirks].val.i,
  		   "enable-smooth-scrolling", curconfig[SmoothScrolling].val.i,
  		   "enable-webgl", curconfig[WebGL].val.i,
  		   "media-playback-requires-user-gesture", curconfig[MediaManualPlay].val.i,
  		   NULL);
  /* For more interesting settings, have a look at
   * http://webkitgtk.org/reference/webkit2gtk/stable/WebKitSettings.html */
  
  		if (strcmp(fulluseragent, "")) {
  			webkit_settings_set_user_agent(settings, fulluseragent);
  		} else if (surfuseragent) {
  			webkit_settings_set_user_agent_with_application_details(
  			    settings, "Surf", VERSION);
  		}
  		useragent = webkit_settings_get_user_agent(settings);
  
  		contentmanager = webkit_user_content_manager_new();
  
  		if (curconfig[Ephemeral].val.i) {
  			context = webkit_web_context_new_ephemeral();
  		} else {
  			context = webkit_web_context_new_with_website_data_manager(
  			          webkit_website_data_manager_new(
  			          "base-cache-directory", cachedir,
  			          "base-data-directory", cachedir,
  			          NULL));
  		}
  
  
  		cookiemanager = webkit_web_context_get_cookie_manager(context);
  
  		/* rendering process model, can be a shared unique one
  		 * or one for each view */
  		webkit_web_context_set_process_model(context,
  		    WEBKIT_PROCESS_MODEL_MULTIPLE_SECONDARY_PROCESSES);
  		/* TLS */
  		webkit_web_context_set_tls_errors_policy(context,
  		    curconfig[StrictTLS].val.i ? WEBKIT_TLS_ERRORS_POLICY_FAIL :
  		    WEBKIT_TLS_ERRORS_POLICY_IGNORE);
  		/* disk cache */
  		webkit_web_context_set_cache_model(context,
  		    curconfig[DiskCache].val.i ? WEBKIT_CACHE_MODEL_WEB_BROWSER :
  		    WEBKIT_CACHE_MODEL_DOCUMENT_VIEWER);
  		/* plugins directories */
  		for (; *plugindirs; ++plugindirs)
  			webkit_web_context_set_additional_plugins_directory(
  			    context, *plugindirs);
  
  		/* Currently only works with text file to be compatible with curl */
  		if (!curconfig[Ephemeral].val.i)
  			webkit_cookie_manager_set_persistent_storage(cookiemanager,
  			    cookiefile, WEBKIT_COOKIE_PERSISTENT_STORAGE_TEXT);
  		/* cookie policy */
  		webkit_cookie_manager_set_accept_policy(cookiemanager,
  		    cookiepolicy_get());
  		/* languages */
  		webkit_web_context_set_preferred_languages(context,
  		    curconfig[PreferredLanguages].val.v);
  		webkit_web_context_set_spell_checking_languages(context,
  		    curconfig[SpellLanguages].val.v);
  		webkit_web_context_set_spell_checking_enabled(context,
  		    curconfig[SpellChecking].val.i);
  
  		g_signal_connect(G_OBJECT(context), "download-started",
  		                 G_CALLBACK(downloadstarted), c);
  		g_signal_connect(G_OBJECT(context), "initialize-web-extensions",
  		                 G_CALLBACK(initwebextensions), c);
  
  		v = g_object_new(WEBKIT_TYPE_WEB_VIEW,
  		    "settings", settings,
  		    "user-content-manager", contentmanager,
  		    "web-context", context,
  		    NULL);
  	}
  
  	g_signal_connect(G_OBJECT(v), "notify::estimated-load-progress",
  			 G_CALLBACK(progresschanged), c);
  	g_signal_connect(G_OBJECT(v), "notify::title",
  			 G_CALLBACK(titlechanged), c);
  	g_signal_connect(G_OBJECT(v), "button-release-event",
  			 G_CALLBACK(buttonreleased), c);
  	g_signal_connect(G_OBJECT(v), "close",
  			G_CALLBACK(closeview), c);
  	g_signal_connect(G_OBJECT(v), "create",
  			 G_CALLBACK(createview), c);
  	g_signal_connect(G_OBJECT(v), "decide-policy",
  			 G_CALLBACK(decidepolicy), c);
  	g_signal_connect(G_OBJECT(v), "insecure-content-detected",
  			 G_CALLBACK(insecurecontent), c);
  	g_signal_connect(G_OBJECT(v), "load-failed-with-tls-errors",
  			 G_CALLBACK(loadfailedtls), c);
  	g_signal_connect(G_OBJECT(v), "load-changed",
  			 G_CALLBACK(loadchanged), c);
  	g_signal_connect(G_OBJECT(v), "mouse-target-changed",
  			 G_CALLBACK(mousetargetchanged), c);
  	g_signal_connect(G_OBJECT(v), "permission-request",
  			 G_CALLBACK(permissionrequested), c);
  	g_signal_connect(G_OBJECT(v), "ready-to-show",
  			 G_CALLBACK(showview), c);
  	g_signal_connect(G_OBJECT(v), "web-process-terminated",
  			 G_CALLBACK(webprocessterminated), c);
  
  	return v;
  }
  
  static gboolean
  readsock(GIOChannel *s, GIOCondition ioc, gpointer unused)
  {
  	static char msg[MSGBUFSZ];
  	GError *gerr = NULL;
  	gsize msgsz;
  
  	if (g_io_channel_read_chars(s, msg, sizeof(msg), &msgsz, &gerr) !=
  	    G_IO_STATUS_NORMAL) {
  		if (gerr) {
  			fprintf(stderr, "surf: error reading socket: %s\n",
  			        gerr->message);
  			g_error_free(gerr);
  		}
  		return TRUE;
  	}
  	if (msgsz < 2) {
  		fprintf(stderr, "surf: message too short: %d\n", msgsz);
  		return TRUE;
  	}
  
  	return TRUE;
  }
  
  void
  initwebextensions(WebKitWebContext *wc, Client *c)
  {
  	GVariant *gv;
  
  	if (spair[1] < 0)
  		return;
  
  	gv = g_variant_new("i", spair[1]);
  
  	webkit_web_context_set_web_extensions_initialization_user_data(wc, gv);
  	webkit_web_context_set_web_extensions_directory(wc, WEBEXTDIR);
  }
  
  GtkWidget *
  createview(WebKitWebView *v, WebKitNavigationAction *a, Client *c)
  {
  	Client *n;
  
  	switch (webkit_navigation_action_get_navigation_type(a)) {
  	case WEBKIT_NAVIGATION_TYPE_OTHER: /* fallthrough */
  		/*
  		 * popup windows of type “other” are almost always triggered
  		 * by user gesture, so inverse the logic here
  		 */
  /* instead of this, compare destination uri to mouse-over uri for validating window */
  		if (webkit_navigation_action_is_user_gesture(a))
  			return NULL;
  	case WEBKIT_NAVIGATION_TYPE_LINK_CLICKED: /* fallthrough */
  	case WEBKIT_NAVIGATION_TYPE_FORM_SUBMITTED: /* fallthrough */
  	case WEBKIT_NAVIGATION_TYPE_BACK_FORWARD: /* fallthrough */
  	case WEBKIT_NAVIGATION_TYPE_RELOAD: /* fallthrough */
  	case WEBKIT_NAVIGATION_TYPE_FORM_RESUBMITTED:
  		n = newclient(c);
  		break;
  	default:
  		return NULL;
  	}
  
  	return GTK_WIDGET(n->view);
  }
  
  gboolean
  buttonreleased(GtkWidget *w, GdkEvent *e, Client *c)
  {
  	WebKitHitTestResultContext element;
  	int i;
  
  	element = webkit_hit_test_result_get_context(c->mousepos);
  
  	for (i = 0; i < LENGTH(buttons); ++i) {
  		if (element & buttons[i].target &&
  		    e->button.button == buttons[i].button &&
  		    CLEANMASK(e->button.state) == CLEANMASK(buttons[i].mask) &&
  		    buttons[i].func) {
  			buttons[i].func(c, &buttons[i].arg, c->mousepos);
  			return buttons[i].stopevent;
  		}
  	}
  
  	return FALSE;
  }
  
  GdkFilterReturn
  processx(GdkXEvent *e, GdkEvent *event, gpointer d)
  {
  	Client *c = (Client *)d;
  	XPropertyEvent *ev;
  	Arg a;
  
  	if (((XEvent *)e)->type == PropertyNotify) {
  		ev = &((XEvent *)e)->xproperty;
  		if (ev->state == PropertyNewValue) {
  			if (ev->atom == atoms[AtomFind]) {
  				find(c, NULL);
  
  				return GDK_FILTER_REMOVE;
  			} else if (ev->atom == atoms[AtomGo]) {
  				a.v = getatom(c, AtomGo);
  				loaduri(c, &a);
  
  				return GDK_FILTER_REMOVE;
  			}
  		}
  	}
  	return GDK_FILTER_CONTINUE;
  }
  
  gboolean
  winevent(GtkWidget *w, GdkEvent *e, Client *c)
  {
  	int i;
  
  	switch (e->type) {
  	case GDK_ENTER_NOTIFY:
  		c->overtitle = c->targeturi;
  		updatetitle(c);
  		break;
  	case GDK_KEY_PRESS:
  		if (!curconfig[KioskMode].val.i) {
  			for (i = 0; i < LENGTH(keys); ++i) {
  				if (gdk_keyval_to_lower(e->key.keyval) ==
  				    keys[i].keyval &&
  				    CLEANMASK(e->key.state) == keys[i].mod &&
  				    keys[i].func) {
  					updatewinid(c);
  					keys[i].func(c, &(keys[i].arg));
  					return TRUE;
  				}
  			}
  		}
  	case GDK_LEAVE_NOTIFY:
  		c->overtitle = NULL;
  		updatetitle(c);
  		break;
  	case GDK_WINDOW_STATE:
  		if (e->window_state.changed_mask ==
  		    GDK_WINDOW_STATE_FULLSCREEN)
  			c->fullscreen = e->window_state.new_window_state &
  			                GDK_WINDOW_STATE_FULLSCREEN;
  		break;
  	default:
  		break;
  	}
  
  	return FALSE;
  }
  
  void
  showview(WebKitWebView *v, Client *c)
  {
  	GdkRGBA bgcolor = { 0 };
  	GdkWindow *gwin;
  
  	c->finder = webkit_web_view_get_find_controller(c->view);
  	c->inspector = webkit_web_view_get_inspector(c->view);
  
  	c->pageid = webkit_web_view_get_page_id(c->view);
  	c->win = createwindow(c);
  
  	gtk_container_add(GTK_CONTAINER(c->win), GTK_WIDGET(c->view));
  	gtk_widget_show_all(c->win);
  	gtk_widget_grab_focus(GTK_WIDGET(c->view));
  
  	gwin = gtk_widget_get_window(GTK_WIDGET(c->win));
  	c->xid = gdk_x11_window_get_xid(gwin);
  	updatewinid(c);
  	if (showxid) {
  		gdk_display_sync(gtk_widget_get_display(c->win));
  		puts(winid);
  		fflush(stdout);
  	}
  
  	if (curconfig[HideBackground].val.i)
  		webkit_web_view_set_background_color(c->view, &bgcolor);
  
  	if (!curconfig[KioskMode].val.i) {
  		gdk_window_set_events(gwin, GDK_ALL_EVENTS_MASK);
  		gdk_window_add_filter(gwin, processx, c);
  	}
  
  	if (curconfig[RunInFullscreen].val.i)
  		togglefullscreen(c, NULL);
  
  	if (curconfig[ZoomLevel].val.f != 1.0)
  		webkit_web_view_set_zoom_level(c->view,
  		                               curconfig[ZoomLevel].val.f);
  
  	setatom(c, AtomFind, "");
  	setatom(c, AtomUri, "about:blank");
  }
  
  GtkWidget *
  createwindow(Client *c)
  {
  	char *wmstr;
  	GtkWidget *w;
  
  	if (embed) {
  		w = gtk_plug_new(embed);
  	} else {
  		w = gtk_window_new(GTK_WINDOW_TOPLEVEL);
  
  		wmstr = g_path_get_basename(argv0);
  		gtk_window_set_wmclass(GTK_WINDOW(w), wmstr, "Surf");
  		g_free(wmstr);
  
  		wmstr = g_strdup_printf("%s[%"PRIu64"]", "Surf", c->pageid);
  		gtk_window_set_role(GTK_WINDOW(w), wmstr);
  		g_free(wmstr);
  
  		gtk_window_set_default_size(GTK_WINDOW(w), winsize[0], winsize[1]);
  	}
  
  	g_signal_connect(G_OBJECT(w), "destroy",
  	                 G_CALLBACK(destroywin), c);
  	g_signal_connect(G_OBJECT(w), "enter-notify-event",
  	                 G_CALLBACK(winevent), c);
  	g_signal_connect(G_OBJECT(w), "key-press-event",
  	                 G_CALLBACK(winevent), c);
  	g_signal_connect(G_OBJECT(w), "leave-notify-event",
  	                 G_CALLBACK(winevent), c);
  	g_signal_connect(G_OBJECT(w), "window-state-event",
  	                 G_CALLBACK(winevent), c);
  
  	return w;
  }
  
  gboolean
  loadfailedtls(WebKitWebView *v, gchar *uri, GTlsCertificate *cert,
                GTlsCertificateFlags err, Client *c)
  {
  	GString *errmsg = g_string_new(NULL);
  	gchar *html, *pem;
  
  	c->failedcert = g_object_ref(cert);
  	c->tlserr = err;
  	c->errorpage = 1;
  
  	if (err & G_TLS_CERTIFICATE_UNKNOWN_CA)
  		g_string_append(errmsg,
  		    "The signing certificate authority is not known.<br>");
  	if (err & G_TLS_CERTIFICATE_BAD_IDENTITY)
  		g_string_append(errmsg,
  		    "The certificate does not match the expected identity "
  		    "of the site that it was retrieved from.<br>");
  	if (err & G_TLS_CERTIFICATE_NOT_ACTIVATED)
  		g_string_append(errmsg,
  		    "The certificate's activation time "
  		    "is still in the future.<br>");
  	if (err & G_TLS_CERTIFICATE_EXPIRED)
  		g_string_append(errmsg, "The certificate has expired.<br>");
  	if (err & G_TLS_CERTIFICATE_REVOKED)
  		g_string_append(errmsg,
  		    "The certificate has been revoked according to "
  		    "the GTlsConnection's certificate revocation list.<br>");
  	if (err & G_TLS_CERTIFICATE_INSECURE)
  		g_string_append(errmsg,
  		    "The certificate's algorithm is considered insecure.<br>");
  	if (err & G_TLS_CERTIFICATE_GENERIC_ERROR)
  		g_string_append(errmsg,
  		    "Some error occurred validating the certificate.<br>");
  
  	g_object_get(cert, "certificate-pem", &pem, NULL);
  	html = g_strdup_printf("<p>Could not validate TLS for “%s”<br>%s</p>"
  	                       "<p>You can inspect the following certificate "
  	                       "with Ctrl-t (default keybinding).</p>"
  	                       "<p><pre>%s</pre></p>", uri, errmsg->str, pem);
  	g_free(pem);
  	g_string_free(errmsg, TRUE);
  
  	webkit_web_view_load_alternate_html(c->view, html, uri, NULL);
  	g_free(html);
  
  	return TRUE;
  }
  
  void
  loadchanged(WebKitWebView *v, WebKitLoadEvent e, Client *c)
  {
  	const char *uri = geturi(c);
  
  	switch (e) {
  	case WEBKIT_LOAD_STARTED:
  		setatom(c, AtomUri, uri);
  		c->title = uri;
  		c->https = c->insecure = 0;
  		seturiparameters(c, uri, loadtransient);
  		if (c->errorpage)
  			c->errorpage = 0;
  		else
  			g_clear_object(&c->failedcert);
  		break;
  	case WEBKIT_LOAD_REDIRECTED:
  		setatom(c, AtomUri, uri);
  		c->title = uri;
  		seturiparameters(c, uri, loadtransient);
  		break;
  	case WEBKIT_LOAD_COMMITTED:
  		setatom(c, AtomUri, uri);
  		c->title = uri;
  		seturiparameters(c, uri, loadcommitted);
  		c->https = webkit_web_view_get_tls_info(c->view, &c->cert,
  		                                        &c->tlserr);
  		break;
  	case WEBKIT_LOAD_FINISHED:
  		seturiparameters(c, uri, loadfinished);
  		/* Disabled until we write some WebKitWebExtension for
  		 * manipulating the DOM directly.
  		evalscript(c, "document.documentElement.style.overflow = '%s'",
  		    enablescrollbars ? "auto" : "hidden");
  		*/
  		runscript(c);
  		break;
  	}
  	updatetitle(c);
  }
  
  void
  progresschanged(WebKitWebView *v, GParamSpec *ps, Client *c)
  {
  	c->progress = webkit_web_view_get_estimated_load_progress(c->view) *
  	              100;
  	updatetitle(c);
  }
  
  void
  titlechanged(WebKitWebView *view, GParamSpec *ps, Client *c)
  {
  	c->title = webkit_web_view_get_title(c->view);
  	updatetitle(c);
  }
  
  void
  mousetargetchanged(WebKitWebView *v, WebKitHitTestResult *h, guint modifiers,
      Client *c)
  {
  	WebKitHitTestResultContext hc = webkit_hit_test_result_get_context(h);
  
  	/* Keep the hit test to know where is the pointer on the next click */
  	c->mousepos = h;
  
  	if (hc & OnLink)
  		c->targeturi = webkit_hit_test_result_get_link_uri(h);
  	else if (hc & OnImg)
  		c->targeturi = webkit_hit_test_result_get_image_uri(h);
  	else if (hc & OnMedia)
  		c->targeturi = webkit_hit_test_result_get_media_uri(h);
  	else
  		c->targeturi = NULL;
  
  	c->overtitle = c->targeturi;
  	updatetitle(c);
  }
  
  gboolean
  permissionrequested(WebKitWebView *v, WebKitPermissionRequest *r, Client *c)
  {
  	ParamName param = ParameterLast;
  
  	if (WEBKIT_IS_GEOLOCATION_PERMISSION_REQUEST(r)) {
  		param = Geolocation;
  	} else if (WEBKIT_IS_USER_MEDIA_PERMISSION_REQUEST(r)) {
  		if (webkit_user_media_permission_is_for_audio_device(
  		    WEBKIT_USER_MEDIA_PERMISSION_REQUEST(r)))
  			param = AccessMicrophone;
  		else if (webkit_user_media_permission_is_for_video_device(
  		         WEBKIT_USER_MEDIA_PERMISSION_REQUEST(r)))
  			param = AccessWebcam;
  	} else {
  		return FALSE;
  	}
  
  	if (curconfig[param].val.i)
  		webkit_permission_request_allow(r);
  	else
  		webkit_permission_request_deny(r);
  
  	return TRUE;
  }
  
  gboolean
  decidepolicy(WebKitWebView *v, WebKitPolicyDecision *d,
      WebKitPolicyDecisionType dt, Client *c)
  {
  	switch (dt) {
  	case WEBKIT_POLICY_DECISION_TYPE_NAVIGATION_ACTION:
  		decidenavigation(d, c);
  		break;
  	case WEBKIT_POLICY_DECISION_TYPE_NEW_WINDOW_ACTION:
  		decidenewwindow(d, c);
  		break;
  	case WEBKIT_POLICY_DECISION_TYPE_RESPONSE:
  		decideresource(d, c);
  		break;
  	default:
  		webkit_policy_decision_ignore(d);
  		break;
  	}
  	return TRUE;
  }
  
  void
  decidenavigation(WebKitPolicyDecision *d, Client *c)
  {
  	WebKitNavigationAction *a =
  	    webkit_navigation_policy_decision_get_navigation_action(
  	    WEBKIT_NAVIGATION_POLICY_DECISION(d));
  
  	switch (webkit_navigation_action_get_navigation_type(a)) {
  	case WEBKIT_NAVIGATION_TYPE_LINK_CLICKED: /* fallthrough */
  	case WEBKIT_NAVIGATION_TYPE_FORM_SUBMITTED: /* fallthrough */
  	case WEBKIT_NAVIGATION_TYPE_BACK_FORWARD: /* fallthrough */
  	case WEBKIT_NAVIGATION_TYPE_RELOAD: /* fallthrough */
  	case WEBKIT_NAVIGATION_TYPE_FORM_RESUBMITTED: /* fallthrough */
  	case WEBKIT_NAVIGATION_TYPE_OTHER: /* fallthrough */
  	default:
  		/* Do not navigate to links with a "_blank" target (popup) */
  		if (webkit_navigation_policy_decision_get_frame_name(
  		    WEBKIT_NAVIGATION_POLICY_DECISION(d))) {
  			webkit_policy_decision_ignore(d);
  		} else {
  			/* Filter out navigation to different domain ? */
  			/* get action→urirequest, copy and load in new window+view
  			 * on Ctrl+Click ? */
  			webkit_policy_decision_use(d);
  		}
  		break;
  	}
  }
  
  void
  decidenewwindow(WebKitPolicyDecision *d, Client *c)
  {
  	Arg arg;
  	WebKitNavigationAction *a =
  	    webkit_navigation_policy_decision_get_navigation_action(
  	    WEBKIT_NAVIGATION_POLICY_DECISION(d));
  
  
  	switch (webkit_navigation_action_get_navigation_type(a)) {
  	case WEBKIT_NAVIGATION_TYPE_LINK_CLICKED: /* fallthrough */
  	case WEBKIT_NAVIGATION_TYPE_FORM_SUBMITTED: /* fallthrough */
  	case WEBKIT_NAVIGATION_TYPE_BACK_FORWARD: /* fallthrough */
  	case WEBKIT_NAVIGATION_TYPE_RELOAD: /* fallthrough */
  	case WEBKIT_NAVIGATION_TYPE_FORM_RESUBMITTED:
  		/* Filter domains here */
  /* If the value of “mouse-button” is not 0, then the navigation was triggered by a mouse event.
   * test for link clicked but no button ? */
  		arg.v = webkit_uri_request_get_uri(
  		        webkit_navigation_action_get_request(a));
  		newwindow(c, &arg, 0);
  		break;
  	case WEBKIT_NAVIGATION_TYPE_OTHER: /* fallthrough */
  	default:
  		break;
  	}
  
  	webkit_policy_decision_ignore(d);
  }
  
  void
  decideresource(WebKitPolicyDecision *d, Client *c)
  {
  	int i, isascii = 1;
  	WebKitResponsePolicyDecision *r = WEBKIT_RESPONSE_POLICY_DECISION(d);
  	WebKitURIResponse *res =
  	    webkit_response_policy_decision_get_response(r);
  	const gchar *uri = webkit_uri_response_get_uri(res);
  
  	if (g_str_has_suffix(uri, "/favicon.ico")) {
  		webkit_policy_decision_ignore(d);
  		return;
  	}
  
  	if (!g_str_has_prefix(uri, "http://")
  	    && !g_str_has_prefix(uri, "https://")
  	    && !g_str_has_prefix(uri, "about:")
  	    && !g_str_has_prefix(uri, "file://")
  	    && !g_str_has_prefix(uri, "data:")
  	    && !g_str_has_prefix(uri, "blob:")
  	    && strlen(uri) > 0) {
  		for (i = 0; i < strlen(uri); i++) {
  			if (!g_ascii_isprint(uri[i])) {
  				isascii = 0;
  				break;
  			}
  		}
  		if (isascii) {
  			handleplumb(c, uri);
  			webkit_policy_decision_ignore(d);
  			return;
  		}
  	}
  
  	if (webkit_response_policy_decision_is_mime_type_supported(r)) {
  		webkit_policy_decision_use(d);
  	} else {
  		webkit_policy_decision_ignore(d);
  		download(c, res);
  	}
  }
  
  void
  insecurecontent(WebKitWebView *v, WebKitInsecureContentEvent e, Client *c)
  {
  	c->insecure = 1;
  }
  
  void
  downloadstarted(WebKitWebContext *wc, WebKitDownload *d, Client *c)
  {
  	g_signal_connect(G_OBJECT(d), "notify::response",
  	                 G_CALLBACK(responsereceived), c);
  }
  
  void
  responsereceived(WebKitDownload *d, GParamSpec *ps, Client *c)
  {
  	download(c, webkit_download_get_response(d));
  	webkit_download_cancel(d);
  }
  
  void
  download(Client *c, WebKitURIResponse *r)
  {
  	Arg a = (Arg)DOWNLOAD(webkit_uri_response_get_uri(r), geturi(c));
  	spawn(c, &a);
  }
  
  void
  webprocessterminated(WebKitWebView *v, WebKitWebProcessTerminationReason r,
                       Client *c)
  {
  	fprintf(stderr, "web process terminated: %s\n",
  	        r == WEBKIT_WEB_PROCESS_CRASHED ? "crashed" : "no memory");
  	closeview(v, c);
  }
  
  void
  closeview(WebKitWebView *v, Client *c)
  {
  	gtk_widget_destroy(c->win);
  }
  
  void
  destroywin(GtkWidget* w, Client *c)
  {
  	destroyclient(c);
  	if (!clients)
  		gtk_main_quit();
  }
  
  gchar *
  parseuri(const gchar *uri) {
  	guint i;
  
  	for (i = 0; i < LENGTH(searchengines); i++) {
  		if (searchengines[i].token == NULL || searchengines[i].uri == NULL ||
  		    *(uri + strlen(searchengines[i].token)) != ' ')
  			continue;
  		if (g_str_has_prefix(uri, searchengines[i].token))
  			return g_strdup_printf(searchengines[i].uri,
  					       uri + strlen(searchengines[i].token) + 1);
  	}
  
  	return g_strdup_printf("http://%s", uri);
  }
  
  void
  pasteuri(GtkClipboard *clipboard, const char *text, gpointer d)
  {
  	Arg a = {.v = text };
  	if (text)
  		loaduri((Client *) d, &a);
  }
  
  void
  reload(Client *c, const Arg *a)
  {
  	if (a->i)
  		webkit_web_view_reload_bypass_cache(c->view);
  	else
  		webkit_web_view_reload(c->view);
  }
  
  void
  print(Client *c, const Arg *a)
  {
  	webkit_print_operation_run_dialog(webkit_print_operation_new(c->view),
  	                                  GTK_WINDOW(c->win));
  }
  
  void
  showcert(Client *c, const Arg *a)
  {
  	GTlsCertificate *cert = c->failedcert ? c->failedcert : c->cert;
  	GcrCertificate *gcrt;
  	GByteArray *crt;
  	GtkWidget *win;
  	GcrCertificateWidget *wcert;
  
  	if (!cert)
  		return;
  
  	g_object_get(cert, "certificate", &crt, NULL);
  	gcrt = gcr_simple_certificate_new(crt->data, crt->len);
  	g_byte_array_unref(crt);
  
  	win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
  	wcert = gcr_certificate_widget_new(gcrt);
  	g_object_unref(gcrt);
  
  	gtk_container_add(GTK_CONTAINER(win), GTK_WIDGET(wcert));
  	gtk_widget_show_all(win);
  }
  
  void
  clipboard(Client *c, const Arg *a)
  {
  	if (a->i) { /* load clipboard uri */
  		gtk_clipboard_request_text(gtk_clipboard_get(
  		                           GDK_SELECTION_PRIMARY),
  		                           pasteuri, c);
  	} else { /* copy uri */
  		gtk_clipboard_set_text(gtk_clipboard_get(
  		                       GDK_SELECTION_PRIMARY), c->targeturi
  		                       ? c->targeturi : geturi(c), -1);
  	}
  }
  
  void
  zoom(Client *c, const Arg *a)
  {
  	if (a->i > 0)
  		webkit_web_view_set_zoom_level(c->view,
  		                               curconfig[ZoomLevel].val.f + 0.1);
  	else if (a->i < 0)
  		webkit_web_view_set_zoom_level(c->view,
  		                               curconfig[ZoomLevel].val.f - 0.1);
  	else
  		webkit_web_view_set_zoom_level(c->view, 1.0);
  
  	curconfig[ZoomLevel].val.f = webkit_web_view_get_zoom_level(c->view);
  }
  
  static void
  msgext(Client *c, char type, const Arg *a)
  {
  	static char msg[MSGBUFSZ];
  	int ret;
  
  	if (spair[0] < 0)
  		return;
  
  	if ((ret = snprintf(msg, sizeof(msg), "%c%c%c", c->pageid, type, a->i))
  	    >= sizeof(msg)) {
  		fprintf(stderr, "surf: message too long: %d\n", ret);
  		return;
  	}
  
  	if (send(spair[0], msg, ret, 0) != ret)
  		fprintf(stderr, "surf: error sending: %u%c%d (%d)\n",
  		        c->pageid, type, a->i, ret);
  }
  
  void
  scrollv(Client *c, const Arg *a)
  {
  	msgext(c, 'v', a);
  }
  
  void
  scrollh(Client *c, const Arg *a)
  {
  	msgext(c, 'h', a);
  }
  
  void
  navigate(Client *c, const Arg *a)
  {
  	if (a->i < 0)
  		webkit_web_view_go_back(c->view);
  	else if (a->i > 0)
  		webkit_web_view_go_forward(c->view);
  }
  
  void
  stop(Client *c, const Arg *a)
  {
  	webkit_web_view_stop_loading(c->view);
  }
  
  void
  toggle(Client *c, const Arg *a)
  {
  	curconfig[a->i].val.i ^= 1;
  	setparameter(c, 1, (ParamName)a->i, &curconfig[a->i].val);
  }
  
  void
  togglefullscreen(Client *c, const Arg *a)
  {
  	/* toggling value is handled in winevent() */
  	if (c->fullscreen)
  		gtk_window_unfullscreen(GTK_WINDOW(c->win));
  	else
  		gtk_window_fullscreen(GTK_WINDOW(c->win));
  }
  
  void
  togglecookiepolicy(Client *c, const Arg *a)
  {
  	++cookiepolicy;
  	cookiepolicy %= strlen(curconfig[CookiePolicies].val.v);
  
  	setparameter(c, 0, CookiePolicies, NULL);
  }
  
  void
  toggleinspector(Client *c, const Arg *a)
  {
  	if (webkit_web_inspector_is_attached(c->inspector))
  		webkit_web_inspector_close(c->inspector);
  	else if (curconfig[Inspector].val.i)
  		webkit_web_inspector_show(c->inspector);
  }
  
  void
  find(Client *c, const Arg *a)
  {
  	const char *s, *f;
  
  	if (a && a->i) {
  		if (a->i > 0)
  			webkit_find_controller_search_next(c->finder);
  		else
  			webkit_find_controller_search_previous(c->finder);
  	} else {
  		s = getatom(c, AtomFind);
  		f = webkit_find_controller_get_search_text(c->finder);
  
  		if (g_strcmp0(f, s) == 0) /* reset search */
  			webkit_find_controller_search(c->finder, "", findopts,
  			                              G_MAXUINT);
  
  		webkit_find_controller_search(c->finder, s, findopts,
  		                              G_MAXUINT);
  
  		if (strcmp(s, "") == 0)
  			webkit_find_controller_search_finish(c->finder);
  	}
  }
  
  void
  clicknavigate(Client *c, const Arg *a, WebKitHitTestResult *h)
  {
  	navigate(c, a);
  }
  
  void
  clicknewwindow(Client *c, const Arg *a, WebKitHitTestResult *h)
  {
  	Arg arg;
  
  	arg.v = webkit_hit_test_result_get_link_uri(h);
  	newwindow(c, &arg, a->i);
  }
  
  void
  clickexternplayer(Client *c, const Arg *a, WebKitHitTestResult *h)
  {
  	Arg arg;
  
  	arg = (Arg)VIDEOPLAY(webkit_hit_test_result_get_media_uri(h));
  	spawn(c, &arg);
  }
  
  int
  main(int argc, char *argv[])
  {
  	Arg arg;
  	Client *c;
  
  	memset(&arg, 0, sizeof(arg));
  
  	/* command line args */
  	ARGBEGIN {
  	case 'a':
  		defconfig[CookiePolicies].val.v = EARGF(usage());
  		defconfig[CookiePolicies].prio = 2;
  		break;
  	case 'b':
  		defconfig[ScrollBars].val.i = 0;
  		defconfig[ScrollBars].prio = 2;
  		break;
  	case 'B':
  		defconfig[ScrollBars].val.i = 1;
  		defconfig[ScrollBars].prio = 2;
  		break;
  	case 'c':
  		cookiefile = EARGF(usage());
  		break;
  	case 'C':
  		stylefile = EARGF(usage());
  		break;
  	case 'd':
  		defconfig[DiskCache].val.i = 0;
  		defconfig[DiskCache].prio = 2;
  		break;
  	case 'D':
  		defconfig[DiskCache].val.i = 1;
  		defconfig[DiskCache].prio = 2;
  		break;
  	case 'e':
  		embed = strtol(EARGF(usage()), NULL, 0);
  		break;
  	case 'f':
  		defconfig[RunInFullscreen].val.i = 0;
  		defconfig[RunInFullscreen].prio = 2;
  		break;
  	case 'F':
  		defconfig[RunInFullscreen].val.i = 1;
  		defconfig[RunInFullscreen].prio = 2;
  		break;
  	case 'g':
  		defconfig[Geolocation].val.i = 0;
  		defconfig[Geolocation].prio = 2;
  		break;
  	case 'G':
  		defconfig[Geolocation].val.i = 1;
  		defconfig[Geolocation].prio = 2;
  		break;
  	case 'i':
  		defconfig[LoadImages].val.i = 0;
  		defconfig[LoadImages].prio = 2;
  		break;
  	case 'I':
  		defconfig[LoadImages].val.i = 1;
  		defconfig[LoadImages].prio = 2;
  		break;
  	case 'k':
  		defconfig[KioskMode].val.i = 0;
  		defconfig[KioskMode].prio = 2;
  		break;
  	case 'K':
  		defconfig[KioskMode].val.i = 1;
  		defconfig[KioskMode].prio = 2;
  		break;
  	case 'm':
  		defconfig[Style].val.i = 0;
  		defconfig[Style].prio = 2;
  		break;
  	case 'M':
  		defconfig[Style].val.i = 1;
  		defconfig[Style].prio = 2;
  		break;
  	case 'n':
  		defconfig[Inspector].val.i = 0;
  		defconfig[Inspector].prio = 2;
  		break;
  	case 'N':
  		defconfig[Inspector].val.i = 1;
  		defconfig[Inspector].prio = 2;
  		break;
  	case 'p':
  		defconfig[Plugins].val.i = 0;
  		defconfig[Plugins].prio = 2;
  		break;
  	case 'P':
  		defconfig[Plugins].val.i = 1;
  		defconfig[Plugins].prio = 2;
  		break;
  	case 'r':
  		scriptfile = EARGF(usage());
  		break;
  	case 's':
  		defconfig[JavaScript].val.i = 0;
  		defconfig[JavaScript].prio = 2;
  		break;
  	case 'S':
  		defconfig[JavaScript].val.i = 1;
  		defconfig[JavaScript].prio = 2;
  		break;
  	case 't':
  		defconfig[StrictTLS].val.i = 0;
  		defconfig[StrictTLS].prio = 2;
  		break;
  	case 'T':
  		defconfig[StrictTLS].val.i = 1;
  		defconfig[StrictTLS].prio = 2;
  		break;
  	case 'u':
  		fulluseragent = EARGF(usage());
  		break;
  	case 'v':
  		die("surf-"VERSION", see LICENSE for © details\n");
  	case 'w':
  		showxid = 1;
  		break;
  	case 'x':
  		defconfig[Certificate].val.i = 0;
  		defconfig[Certificate].prio = 2;
  		break;
  	case 'X':
  		defconfig[Certificate].val.i = 1;
  		defconfig[Certificate].prio = 2;
  		break;
  	case 'z':
  		defconfig[ZoomLevel].val.f = strtof(EARGF(usage()), NULL);
  		defconfig[ZoomLevel].prio = 2;
  		break;
  	default:
  		usage();
  	} ARGEND;
  	if (argc > 0)
  		arg.v = argv[0];
  	else
  		arg.v = "about:blank";
  
  	setup();
  	c = newclient(NULL);
  	showview(NULL, c);
  
  	loaduri(c, &arg);
  	updatetitle(c);
  
  	gtk_main();
  	cleanup();
  
  	return 0;
  }
  