readme update

Add support for PPC64 Little Endian, fix incorrect spelling in wrp.go and README.md

.gitignore

@@ -1 +0,0 @@
-.vscode

Changelog.md

@@ -1,36 +0,0 @@
-## [2.0] - 2017-05-10
-### Added
-- Support PyQt5 if available.
-- Sets title from original one.
-- Returns server errors as is.
-- Download non-HTML files as is.
-- For JavaScript capable browsers detect and automatically set view width.
-- Add support for configuring which image format to use.
-- Added support for PythonMagick. If found, allows to dither, color-reduce, or convert to grayscale or monochrome.
-- If PythonMagick is found, render as PNG and convert to user-requested format using it, for better quality.
-
-### Changed
-- Support www prepented to http://wrp.stop command.
-
-### Fixed
-- Prevent python crashes with non-ASCII character in URLs.
-
-## [1.4] - 2017-01-22
-### Added
-- Suport for ISMAP on Linux.
-- Use queues instead of globals in Linux.
-
-## [1.3] - 2017-01-21
-### Changed
-- Merged mac OS and Linux in a single executable.
-- Use queues instead of globals in Linux.
-
-### Fixed
-- Call PyQt to close application on http://wrp.stop
-
-## [1.2] - 2016-12-27
-### Added
-- Support for IMAP on mac OS.
-
-### Changed
-- Use queues instead of globals in mac OS.

LICENSE

@@ -0,0 +1,201 @@
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Makefile

@@ -0,0 +1,25 @@
+all: linux freebsd openbsd macos windows rpi
+
+linux: 
+	GOOS=linux GOARCH=amd64 go build -a -o wrp-linux wrp.go
+
+linux-ppc64le:
+	GOOS=linux GOARCH=ppc64le go build -a -o wrp-linux-ppc64le wrp.go
+
+rpi:
+	GOOS=linux GOARCH=arm go build -a -o wrp-linux-rpi wrp.go
+
+freebsd: 
+	GOOS=freebsd GOARCH=amd64 go build -a -o wrp-freebsd wrp.go
+
+openbsd: 
+	GOOS=openbsd GOARCH=amd64 go build -a -o wrp-openbsd wrp.go
+
+macos: 
+	GOOS=darwin GOARCH=amd64 go build -a -o wrp-macos wrp.go
+
+windows: 
+	GOOS=windows GOARCH=amd64 go build -a -o wrp-windows.exe wrp.go
+
+clean:
+	rm -rf wrp-linux wrp-freebsd wrp-openbsd wrp-macos wrp-windows.exe wrp-linux-rpi

README

@@ -1,7 +0,0 @@
-WRP is a HTTP proxy service that renders the web page in to a GIF/JPEG image associated with clickable imagemap of the original web links. It allows to use historical and obsolete web browsers on the modern web. It's still a work in progress but it's quite stable and usable for casual web browsing.
-
-WRP supports Mac OS X and Linux. It requires Python 2.7 and under Linux, PyQT4.
-
-More info and screenshots: http://virtuallyfun.superglobalmegacorp.com/2014/03/11/web-rendering-proxy-update/
-
-Even more screenshots: http://virtuallyfun.superglobalmegacorp.com/2014/03/03/surfing-modern-web-with-ancient-browsers/

README.md

@@ -0,0 +1,42 @@
+# WRP - Web Rendering Proxy
+
+A HTTP proxy server that allows to use historical and obsolete web browsers on the modern web. It works by rendering the web page in to a GIF image. It sends mouse clicks via ISMAP and keystrokes from a text box form input.
+
+## Current Status
+
+* This is a new reimplementation in GoLang/[ChromeDP](https://github.com/chromedp/chromedp). Python/Webkit being now deprecated.
+* Beta but fully supported an maintained.
+* Works as browser-in-browser. A real http proxy mode is being investigated. Check [issue #35](https://github.com/tenox7/wrp/issues/35) for updates.
+* As of 4.1 supports clicking on non-link elements (eg. cookie warnings, dropdown menus, etc.) and sending keystrokes. Yes, you can login and use Gmail or play web based games from any old browser.
+
+## Usage	
+
+1. [Download a WRP binary](https://github.com/tenox7/wrp/releases/) and run it on a machine that will become your WRP server.
+2. Point your legacy browser to `http://address:port` of WRP server. Do not set or use it as a "Proxy Server" (yet).
+3. Type a search string or a http/https URL and click GO.	
+4. Adjust your screen width/height/scale/#colors to fit in your old browser.	
+5. Scroll web page by clicking on the in-image scroll bar.
+6. Send keystrokes by filling in K input box and pressing Go. You also have buttons for backspace, enter and arrow keys.
+
+![Internet Explorer 1.5 doing Gmail](wrp.png)
+
+## Flags
+```
+-l  listen address:port, default :8080
+-h  headed mode, display browser window
+-d  chromedp debug logging
+```
+
+## More info and screenshots
+* http://virtuallyfun.superglobalmegacorp.com/2014/03/11/web-rendering-proxy-update/
+* http://virtuallyfun.superglobalmegacorp.com/2014/03/03/surfing-modern-web-with-ancient-browsers/
+
+## Credits 
+* Uses [chromedp](https://github.com/chromedp), thanks to [mvdan](https://github.com/mvdan) for dealing with my issues
+* Uses [go-quantize](https://github.com/ericpauley/go-quantize), thanks to [ericpauley](https://github.com/ericpauley) for developing the missing go quantizer
+* Thanks to Jason Stevens of [Fun With Virtualization](https://virtuallyfun.com/) for graciously hosting my rumblings
+
+## Legal Stuff
+License: Apache 2.0  
+Copyright (c) 2013-2018 Antoni Sawicki  
+Copyright (c) 2019 Google LLC

old/wrp.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python2.7
 
-# wrp.py - Web Rendering Proxy
+# wrp.py - Web Rendering Proxy - https://github.com/tenox7/wrp
 # A HTTP proxy service that renders the requested URL in to a image associated
 # with an imagemap of clickable links. This is an adaptation of previous works by
 # picidae.net and Paul Hammond.
@@ -9,15 +9,16 @@ __version__ = "2.0"
 
 #
 # This program is based on the software picidae.py from picidae.net
-# It was modified by Antoni Sawicki http://www.tenox.net/out/#wrp
+# It was modified by Antoni Sawicki and Natalia Portillo
 #
 # This program is based on the software webkit2png from Paul Hammond.
 # It was extended by picidae.net
 #
-# Copyright (c) 2013-2014 Antoni Sawicki
+# Copyright (c) 2013-2018 Antoni Sawicki
 # Copyright (c) 2012-2013 picidae.net
 # Copyright (c) 2004-2013 Paul Hammond
-# Copyright (c) 2017      Natalia Portillo
+# Copyright (c) 2017-2018 Natalia Portillo
+# Copyright (c) 2018      //gir.st/
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
@@ -39,20 +40,21 @@ __version__ = "2.0"
 #
 
 # Configuration options:
-PORT   = 8080
-WIDTH  = 1024
-HEIGHT = 768
-ISMAP  = "true"
-WAIT    = 1  # sleep for 1 second to allow javascript renders
-QUALITY = 75 # For JPEG: image quality 0-100; For PNG: sets compression level (leftmost digit 0 fastest, 9 best)
+PORT      = 8080
+WIDTH     = 1024
+HEIGHT    = 768
+ISMAP     = False # ISMAP=True is Server side for Mosaic 1.1 and up. HTML 3.2 supports Client side maps (ISMAP=False)
+WAIT      = 1  # sleep for 1 second to allow javascript renders
+QUALITY   = 75 # For JPEG: image quality 0-100; For PNG: sets compression level (leftmost digit 0 fastest, 9 best)
 AUTOWIDTH = True # Check for browser width using javascript
-FORMAT = "AUTO" # AUTO = GIF for mac OS, JPG for rest; PNG, GIF, JPG as supported values.
+FORMAT    = "AUTO" # AUTO = GIF for mac OS, JPG for rest; PNG, GIF, JPG as supported values.
+SSLSTRIP  = True # enable to automatically downgrade secure requests
 
 # PythonMagick configuration options
 MK_MONOCHROME = False # Convert the render to a black and white dithered image
-MK_GRAYSCALE = False # Convert the render to a grayscal dithered image
-MK_COLORS = 0 # Reduce number of colors in the image. 0 for not reducing. Less than 256 works in grayscale also.
-MK_DITHER = False # Dither the image to reduce size. GIFs will always be dithered. Ignored if MK_COLORS is not set.
+MK_GRAYSCALE  = False # Convert the render to a grayscal dithered image
+MK_COLORS     = 0   # Reduce number of colors in the image. 0 for not reducing. Less than 256 works in grayscale also.
+MK_DITHER     = False # Dither the image to reduce size. GIFs will always be dithered. Ignored if MK_COLORS is not set.
 
 import re
 import random
@@ -68,6 +70,7 @@ import Queue
 import sys
 import logging
 import StringIO
+import subprocess
 
 try:
     import PythonMagick
@@ -86,7 +89,7 @@ RENDERS = {}
 ### Linux CODEPATH ###
 #######################
 
-if sys.platform == "linux" or sys.platform == "linux2":
+if sys.platform.startswith('linux') or sys.platform.startswith('freebsd'):
     try:
         from PyQt5.QtCore import *
         from PyQt5.QtGui import *
@@ -265,7 +268,7 @@ if sys.platform == "linux" or sys.platform == "linux2":
             if AUTOWIDTH:
                 httpout.write("<script>document.write('<span style=\"display: none;\"><img src=\"http://width-' + document.body.clientWidth + '-px.jpg\" width=\"0\" height=\"0\"></span>');</script>\n")
 
-            if ISMAP == "true":
+            if ISMAP == True:
                 httpout.write("<A HREF=\"http://%s\">"
                               "<IMG SRC=\"http://%s\" ALT=\"wrp-render\" ISMAP>\n"
                               "</A>\n" % (WebkitRenderer.req_map, WebkitRenderer.req_img))
@@ -278,20 +281,20 @@ if sys.platform == "linux" or sys.platform == "linux2":
             for x in frame.findAllElements('a'):
                 turl = QUrl(web_url).resolved(QUrl(x.attribute('href'))).toString()
                 xmin, ymin, xmax, ymax = x.geometry().getCoords()
-                if ISMAP == "true":
+                if ISMAP == True:
                     mapfile.write("rect %s %i,%i %i,%i\n".decode('utf-8', errors='ignore') % (turl, xmin, ymin, xmax, ymax))
                 else:
-                    httpout.write("<AREA SHAPE=\"RECT\""
+                    httpout.write(("<AREA SHAPE=\"RECT\""
                                   " COORDS=\"%i,%i,%i,%i\""
                                   " ALT=\"%s\" HREF=\"%s\">\n".decode('utf-8', errors='ignore')
-                                  % (xmin, ymin, xmax, ymax, turl, turl))
+                                  % (xmin, ymin, xmax, ymax, turl, turl)).encode("utf-8"))
 
-            if ISMAP != "true":
+            if ISMAP != True:
                 httpout.write("</MAP>\n")
 
             httpout.write("</BODY>\n</HTML>\n")
 
-            if ISMAP == "true":
+            if ISMAP == True:
                 RENDERS[WebkitRenderer.req_map] = mapfile
 
             return image
@@ -665,7 +668,7 @@ elif sys.platform == "darwin":
                 if AUTOWIDTH:
                     httpout.write("<script>document.write('<span style=\"display: none;\"><img src=\"http://width-' + document.body.clientWidth + '-px.jpg\" width=\"0\" height=\"0\"></span>');</script>\n")
 
-                if ISMAP == "true":
+                if ISMAP == True:
                     httpout.write("<A HREF=\"http://%s\">"
                                   "<IMG SRC=\"http://%s\" ALT=\"wrp-render\" ISMAP>\n"
                                   "</A>\n" % (WebkitLoad.req_map, WebkitLoad.req_img))
@@ -687,7 +690,7 @@ elif sys.platform == "darwin":
                     xmax = Foundation.NSMaxX(myrect)
                     ymax = Foundation.NSMaxY(myrect)
 
-                    if ISMAP == "true":
+                    if ISMAP == True:
                         mapfile.write("rect %s %i,%i %i,%i\n".decode('utf-8', errors='ignore') % (turl, xmin, ymin, xmax, ymax))
                     else:
                         httpout.write("<AREA SHAPE=\"RECT\""
@@ -697,12 +700,12 @@ elif sys.platform == "darwin":
 
                     i += 1
 
-                if ISMAP != "true":
+                if ISMAP != True:
                     httpout.write("</MAP>\n")
 
                 httpout.write("</BODY>\n</HTML>\n")
 
-                if ISMAP == "true":
+                if ISMAP == True:
                     RENDERS[WebkitLoad.req_map] = mapfile
 
                 # Return to Proxy thread and Loop...
@@ -861,7 +864,7 @@ class Proxy(SimpleHTTPServer.SimpleHTTPRequestHandler):
                         req_extension = ".jpg"
                     elif FORMAT == "PNG":
                         req_extension = ".png"
-                    elif (sys.platform == "linux" or sys.platform == "linux2") and FORMAT == "AUTO":
+                    elif (sys.platform.startswith('linux') or sys.platform.startswitch('freebsd')) and FORMAT == "AUTO":
                         req_extension = ".jpg"
                     elif sys.platform == "darwin" and FORMAT == "AUTO":
                         req_extension = ".gif"
@@ -891,13 +894,23 @@ def main():
     if(FORMAT != "AUTO" and FORMAT != "GIF" and FORMAT != "JPG" and FORMAT != "PNG"):
         sys.exit("Unsupported image format \"%s\". Exiting." % FORMAT)
 
-    if (sys.platform == "linux" or sys.platform == "linux2") and FORMAT == "GIF" and not HasMagick:
+    if (sys.platform.startswith('linux') or sys.platform.startswith('freebsd')) and FORMAT == "GIF" and not HasMagick:
         sys.exit("GIF format is not supported on this platform. Exiting.")
 
+    # run traffic through sslstrip as a quick workaround for getting SSL webpages to work
+    # NOTE: modern browsers are doing their best to stop this kind of 'attack'. Firefox 
+    # supports an about:config flag test.currentTimeOffsetSeconds(int) = 12000000, which 
+    # you can use to circumvent those checks.
+    if SSLSTRIP:
+        try:
+            subprocess.check_output(["pidof", "sslstrip"])
+        except:
+            subprocess.Popen(["sslstrip"], stdout=open(os.devnull,'w'), stderr=subprocess.STDOUT) # runs on port 10000 by default
+        QNetworkProxy.setApplicationProxy(QNetworkProxy(QNetworkProxy.HttpProxy, "localhost", 10000))
     # Launch Proxy Thread
     threading.Thread(target=run_proxy).start()
 
-    if sys.platform == "linux" or sys.platform == "linux2":
+    if sys.platform.startswith('linux') or sys.platform.startswith('freebsd'):
         import signal
         try:
             import PyQt5.QtCore

wrp.go

@@ -0,0 +1,291 @@
+//
+// WRP - Web Rendering Proxy
+//
+// Copyright (c) 2013-2018 Antoni Sawicki
+// Copyright (c) 2019 Google LLC
+//
+
+package main
+
+import (
+	"bytes"
+	"context"
+	"flag"
+	"fmt"
+	"image/gif"
+	"image/png"
+	"log"
+	"math/rand"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/chromedp/cdproto/emulation"
+	"github.com/chromedp/chromedp"
+	"github.com/ericpauley/go-quantize/quantize"
+)
+
+var (
+	version = "4.2"
+	srv     http.Server
+	ctx     context.Context
+	cancel  context.CancelFunc
+	gifmap  = make(map[string]bytes.Buffer)
+	ismap   = make(map[string]wrpReq)
+)
+
+type wrpReq struct {
+	U string  // url
+	W int64   // width
+	H int64   // height
+	S float64 // scale
+	C int64   // #colors
+	X int64   // mouseX
+	Y int64   // mouseY
+	K string  // keys to send
+	F string  // Fn buttons
+}
+
+func (w *wrpReq) parseForm(req *http.Request) {
+	req.ParseForm()
+	w.U = req.FormValue("url")
+	if len(w.U) > 1 && !strings.HasPrefix(w.U, "http") {
+		w.U = fmt.Sprintf("http://www.google.com/search?q=%s", url.QueryEscape(w.U))
+	}
+	w.W, _ = strconv.ParseInt(req.FormValue("w"), 10, 64)
+	if w.W < 10 {
+		w.W = 1152
+	}
+	w.H, _ = strconv.ParseInt(req.FormValue("h"), 10, 64)
+	if w.H < 10 {
+		w.H = 600
+	}
+	w.S, _ = strconv.ParseFloat(req.FormValue("s"), 64)
+	if w.S < 0.1 {
+		w.S = 1.0
+	}
+	w.C, _ = strconv.ParseInt(req.FormValue("c"), 10, 64)
+	if w.C < 2 || w.C > 256 {
+		w.C = 256
+	}
+	w.K = req.FormValue("k")
+	w.F = req.FormValue("Fn")
+	log.Printf("WrpReq from Form: %+v\n", w)
+}
+
+func (w wrpReq) printPage(out http.ResponseWriter) {
+	out.Header().Set("Content-Type", "text/html")
+	fmt.Fprintf(out, "<!-- Web Rendering Proxy Version %s -->\n", version)
+	fmt.Fprintf(out, "<HTML>\n<HEAD><TITLE>WRP %s</TITLE></HEAD>\n<BODY BGCOLOR=\"#F0F0F0\">\n", w.U)
+	fmt.Fprintf(out, "<FORM ACTION=\"/\" METHOD=\"POST\">\n")
+	fmt.Fprintf(out, "<INPUT TYPE=\"TEXT\" NAME=\"url\" VALUE=\"%s\" SIZE=\"10\">", w.U)
+	fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" VALUE=\"Go\">\n")
+	fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" NAME=\"Fn\" VALUE=\"Bk\">\n")
+	fmt.Fprintf(out, "W <INPUT TYPE=\"TEXT\" NAME=\"w\" VALUE=\"%d\" SIZE=\"4\"> \n", w.W)
+	fmt.Fprintf(out, "H <INPUT TYPE=\"TEXT\" NAME=\"h\" VALUE=\"%d\" SIZE=\"4\"> \n", w.H)
+	fmt.Fprintf(out, "S <INPUT TYPE=\"TEXT\" NAME=\"s\" VALUE=\"%1.2f\" SIZE=\"3\"> \n", w.S)
+	fmt.Fprintf(out, "C <INPUT TYPE=\"TEXT\" NAME=\"c\" VALUE=\"%d\" SIZE=\"3\">\n", w.C)
+	fmt.Fprintf(out, "K <INPUT TYPE=\"TEXT\" NAME=\"k\" VALUE=\"\" SIZE=\"4\"> \n")
+	fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" NAME=\"Fn\" VALUE=\"Bs\">\n")
+	fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" NAME=\"Fn\" VALUE=\"Rt\">\n")
+	fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" NAME=\"Fn\" VALUE=\"&lt;\">\n")
+	fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" NAME=\"Fn\" VALUE=\"^\">\n")
+	fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" NAME=\"Fn\" VALUE=\"v\">\n")
+	fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" NAME=\"Fn\" VALUE=\"&gt;\" SIZE=\"1\">\n")
+	fmt.Fprintf(out, "</FORM><BR>\n")
+}
+
+func (w wrpReq) printFooter(out http.ResponseWriter) {
+	fmt.Fprintf(out, "\n<P><A HREF=\"/?url=https://github.com/tenox7/wrp/&w=%d&h=%d&s=%1.2f&c=%d\">"+
+		"Web Rendering Proxy Version %s</A> | <A HREF=\"/shutdown/\">Shutdown WRP</A></BODY>\n</HTML>\n", w.W, w.H, w.S, w.C, version)
+}
+
+func pageServer(out http.ResponseWriter, req *http.Request) {
+	log.Printf("%s Page Request for %s [%+v]\n", req.RemoteAddr, req.URL.Path, req.URL.RawQuery)
+	var w wrpReq
+	w.parseForm(req)
+
+	if len(w.U) > 4 {
+		w.capture(req.RemoteAddr, out)
+	} else {
+		w.printPage(out)
+		w.printFooter(out)
+	}
+}
+
+func mapServer(out http.ResponseWriter, req *http.Request) {
+	log.Printf("%s ISMAP Request for %s [%+v]\n", req.RemoteAddr, req.URL.Path, req.URL.RawQuery)
+	w, ok := ismap[req.URL.Path]
+	if !ok {
+		fmt.Fprintf(out, "Unable to find map %s\n", req.URL.Path)
+		log.Printf("Unable to find map %s\n", req.URL.Path)
+		return
+	}
+	defer delete(ismap, req.URL.Path)
+	n, err := fmt.Sscanf(req.URL.RawQuery, "%d,%d", &w.X, &w.Y)
+	if err != nil || n != 2 {
+		fmt.Fprintf(out, "n=%d, err=%s\n", n, err)
+		log.Printf("%s ISMAP n=%d, err=%s\n", req.RemoteAddr, n, err)
+		return
+	}
+	log.Printf("%s WrpReq from ISMAP: %+v\n", req.RemoteAddr, w)
+	if len(w.U) > 4 {
+		w.capture(req.RemoteAddr, out)
+	} else {
+		w.printPage(out)
+		w.printFooter(out)
+	}
+}
+
+func imgServer(out http.ResponseWriter, req *http.Request) {
+	log.Printf("%s IMG Request for %s\n", req.RemoteAddr, req.URL.Path)
+	gifbuf, ok := gifmap[req.URL.Path]
+	if !ok || gifbuf.Bytes() == nil {
+		fmt.Fprintf(out, "Unable to find image %s\n", req.URL.Path)
+		log.Printf("Unable to find image %s\n", req.URL.Path)
+		return
+	}
+	defer delete(gifmap, req.URL.Path)
+	out.Header().Set("Content-Type", "image/gif")
+	out.Header().Set("Content-Length", strconv.Itoa(len(gifbuf.Bytes())))
+	out.Write(gifbuf.Bytes())
+	out.(http.Flusher).Flush()
+}
+
+func (w wrpReq) capture(c string, out http.ResponseWriter) {
+	var pngbuf []byte
+	var gifbuf bytes.Buffer
+	var err error
+
+	if w.X > 0 && w.Y > 0 {
+		log.Printf("%s Mouse Click %d,%d\n", c, w.X, w.Y)
+		err = chromedp.Run(ctx, chromedp.MouseClickXY(int64(float64(w.X)/w.S), int64(float64(w.Y)/w.S)))
+	} else if len(w.F) > 0 {
+		log.Printf("%s Button %v\n", c, w.F)
+		switch w.F {
+		case "Bk":
+			err = chromedp.Run(ctx, chromedp.NavigateBack())
+		case "Bs":
+			err = chromedp.Run(ctx, chromedp.KeyEvent("\b"))
+		case "Rt":
+			err = chromedp.Run(ctx, chromedp.KeyEvent("\r"))
+		case "<":
+			err = chromedp.Run(ctx, chromedp.KeyEvent("\u0302"))
+		case "^":
+			err = chromedp.Run(ctx, chromedp.KeyEvent("\u0304"))
+		case "v":
+			err = chromedp.Run(ctx, chromedp.KeyEvent("\u0301"))
+		case ">":
+			err = chromedp.Run(ctx, chromedp.KeyEvent("\u0303"))
+		}
+	} else if len(w.K) > 0 {
+		log.Printf("%s Sending Keys: %#v\n", c, w.K)
+		err = chromedp.Run(ctx, chromedp.KeyEvent(w.K))
+	} else {
+		log.Printf("%s Processing Capture Request for %s\n", c, w.U)
+		err = chromedp.Run(ctx,
+			emulation.SetDeviceMetricsOverride(int64(float64(w.W)/w.S), int64(float64(w.H)/w.S), w.S, false),
+			chromedp.Navigate(w.U),
+		)
+	}
+
+	if err != nil {
+		if err.Error() == "context canceled" {
+			log.Printf("%s Contex cancelled, try again", c)
+			fmt.Fprintf(out, "<BR>%s<BR> -- restarting, try again", err)
+			ctx, cancel = chromedp.NewContext(context.Background())
+		} else {
+			log.Printf("%s %s", c, err)
+			fmt.Fprintf(out, "<BR>%s<BR>", err)
+		}
+		return
+	}
+
+	chromedp.Run(
+		ctx, chromedp.Sleep(time.Second*3),
+		chromedp.Location(&w.U),
+	)
+	log.Printf("%s Landed on: %s\n", c, w.U)
+	w.printPage(out)
+
+	// Process Screenshot Image
+	err = chromedp.Run(ctx, chromedp.CaptureScreenshot(&pngbuf))
+	if err != nil {
+		log.Printf("%s Failed to capture screenshot: %s\n", c, err)
+		fmt.Fprintf(out, "<BR>Unable to capture screenshot:<BR>%s<BR>\n", err)
+		return
+	}
+	bytes.NewReader(pngbuf).Seek(0, 0)
+	img, err := png.Decode(bytes.NewReader(pngbuf))
+	if err != nil {
+		log.Printf("%s Failed to decode screenshot: %s\n", c, err)
+		fmt.Fprintf(out, "<BR>Unable to decode page screenshot:<BR>%s<BR>\n", err)
+		return
+	}
+	gifbuf.Reset()
+	err = gif.Encode(&gifbuf, img, &gif.Options{NumColors: int(w.C), Quantizer: quantize.MedianCutQuantizer{}})
+	if err != nil {
+		log.Printf("%s Failed to encode GIF: %s\n", c, err)
+		fmt.Fprintf(out, "<BR>Unable to encode GIF:<BR>%s<BR>\n", err)
+		return
+	}
+
+	// Compose map and gif
+	seq := rand.Intn(9999)
+	imgpath := fmt.Sprintf("/img/%04d.gif", seq)
+	mappath := fmt.Sprintf("/map/%04d.map", seq)
+	gifmap[imgpath] = gifbuf
+	ismap[mappath] = w
+	log.Printf("%s Encoded GIF image: %s, Size: %dKB, Colors: %d\n", c, imgpath, len(gifbuf.Bytes())/1024, w.C)
+	fmt.Fprintf(out, "<A HREF=\"%s\"><IMG SRC=\"%s\" ALT=\"wrp\" BORDER=\"0\" ISMAP></A>", mappath, imgpath)
+	w.printFooter(out)
+	log.Printf("%s Done with caputure for %s\n", c, w.U)
+}
+
+func haltServer(out http.ResponseWriter, req *http.Request) {
+	log.Printf("%s Shutdown Request for %s\n", req.RemoteAddr, req.URL.Path)
+	defer cancel()
+	srv.Shutdown(context.Background())
+}
+
+func main() {
+	var addr string
+	var head, headless bool
+	var debug bool
+	flag.StringVar(&addr, "l", ":8080", "Listen address:port, default :8080")
+	flag.BoolVar(&head, "h", false, "Headed mode - display browser window")
+	flag.BoolVar(&debug, "d", false, "Debug ChromeDP")
+	flag.Parse()
+	if head {
+		headless = false
+	} else {
+		headless = true
+	}
+	opts := append(chromedp.DefaultExecAllocatorOptions[:],
+		chromedp.Flag("headless", headless),
+		chromedp.Flag("hide-scrollbars", false),
+	)
+	actx, cancel := chromedp.NewExecAllocator(context.Background(), opts...)
+	defer cancel()
+	if debug {
+		ctx, cancel = chromedp.NewContext(actx, chromedp.WithDebugf(log.Printf))
+	} else {
+		ctx, cancel = chromedp.NewContext(actx)
+	}
+	defer cancel()
+	rand.Seed(time.Now().UnixNano())
+	http.HandleFunc("/", pageServer)
+	http.HandleFunc("/map/", mapServer)
+	http.HandleFunc("/img/", imgServer)
+	http.HandleFunc("/shutdown/", haltServer)
+	http.HandleFunc("/favicon.ico", http.NotFound)
+	log.Printf("Web Rendering Proxy Version %s\n", version)
+	log.Printf("Starting WRP http server on %s\n", addr)
+	srv.Addr = addr
+	err := srv.ListenAndServe()
+	if err != nil {
+		log.Fatal(err)
+	}
+}