mirror of https://github.com/tenox7/wrp.git
merge
This commit is contained in:
Antoni Sawicki
commit
6f702d74e5
36
Changelog.md
36
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.
|
||||
|
|
@ -0,0 +1,22 @@
|
|||
all: linux freebsd openbsd macos windows rpi
|
||||
|
||||
linux:
|
||||
GOOS=linux GOARCH=amd64 go build -a -o wrp-linux 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
|
||||
|
||||
rpi:
|
||||
GOOS=linux GOARCH=arm go build -a -o wrp-linux-rpi wrp.go
|
||||
|
||||
clean:
|
||||
rm -rf wrp-linux wrp-freebsd wrp-openbsd wrp-macos wrp-windows.exe wrp-linux-rpi
|
||||
|
|
@ -0,0 +1,36 @@
|
|||
# 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 associated with clickable imagemap of original web links.
|
||||
|
||||
## Current Status
|
||||
|
||||
* This is the new GoLang/ChdomeDP version.
|
||||
* It's still lacking some features of the [older version](/old) (eg real http proxy mode and image manipulation) but it surpases it in terms of stability and usability.
|
||||
* It's beta quality but I can fix/maintain the code unlike the older version.
|
||||
|
||||
## Todo
|
||||
|
||||
* Configurable color palete and quantization.
|
||||
* Real http proxy support via [goproxy](https://github.com/elazarl/goproxy) - if you really need a real proxy for now try [old/](/old) version.
|
||||
* Padded box model coordinates.
|
||||
* Input boxes support. However today you can cheat by using headed mode and input your data on the WRP server.
|
||||
|
||||
## Usage
|
||||
|
||||
1. [Download a WRP binary](https://github.com/tenox7/wrp/releases) and run on a server/gateway.
|
||||
2. Point your legacy browser to the IP address:port of WRP server.
|
||||
3. Type a search string or a http/https URL and click Go.
|
||||
4. Adjust your screen width/heigh/scale to fit in your old browser.
|
||||
5. For very very very old browsers such as Mosaic 2.x and IBM WebExplorer 1.x check the I checkbox to enable ISMAP mode. However this normally should not be needed.
|
||||
6. Scroll web page by clicking Up/Down. To go to top enter 0 and click Go.
|
||||
|
||||
## 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/
|
||||
|
|
@ -0,0 +1,287 @@
|
|||
//
|
||||
// WRP - Web Rendering Proxy
|
||||
//
|
||||
// Copyright (c) 2013-2018 Antoni Sawicki
|
||||
// Copyright (c) 2019 Google LLC
|
||||
//
|
||||
|
||||
package main
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"context"
|
||||
"flag"
|
||||
"fmt"
|
||||
_ "image"
|
||||
"image/gif"
|
||||
"image/png"
|
||||
"log"
|
||||
"math/rand"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"strconv"
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
"github.com/chromedp/cdproto/emulation"
|
||||
"github.com/chromedp/cdproto/runtime"
|
||||
|
||||
"github.com/chromedp/cdproto/cdp"
|
||||
"github.com/chromedp/cdproto/dom"
|
||||
"github.com/chromedp/chromedp"
|
||||
)
|
||||
|
||||
// Ismap for server side processing
|
||||
type Ismap struct {
|
||||
xmin int64
|
||||
ymin int64
|
||||
xmax int64
|
||||
ymax int64
|
||||
url string
|
||||
}
|
||||
|
||||
var (
|
||||
version = "3.0"
|
||||
ctx context.Context
|
||||
cancel context.CancelFunc
|
||||
gifmap = make(map[string]bytes.Buffer)
|
||||
ismap = make(map[string][]Ismap)
|
||||
)
|
||||
|
||||
func pageServer(out http.ResponseWriter, req *http.Request) {
|
||||
req.ParseForm()
|
||||
u := req.FormValue("url")
|
||||
var istr string
|
||||
var ion string
|
||||
var i bool
|
||||
if req.FormValue("i") == "on" {
|
||||
istr = "CHECKED"
|
||||
i = true
|
||||
ion = "&i=on"
|
||||
} else {
|
||||
istr = ""
|
||||
i = false
|
||||
}
|
||||
p, _ := strconv.ParseInt(req.FormValue("p"), 10, 64)
|
||||
if req.FormValue("pg") == "Dn" {
|
||||
p++
|
||||
} else if req.FormValue("pg") == "Up" {
|
||||
p--
|
||||
} else {
|
||||
p = 0
|
||||
}
|
||||
w, _ := strconv.ParseInt(req.FormValue("w"), 10, 64)
|
||||
if w < 10 {
|
||||
w = 1024
|
||||
}
|
||||
h, _ := strconv.ParseInt(req.FormValue("h"), 10, 64)
|
||||
if h < 10 {
|
||||
h = 768
|
||||
}
|
||||
s, _ := strconv.ParseFloat(req.FormValue("s"), 64)
|
||||
if s < 0.1 {
|
||||
s = 1.0
|
||||
}
|
||||
c, _ := strconv.ParseInt(req.FormValue("c"), 10, 64)
|
||||
if c < 2 || c > 256 {
|
||||
c = 256
|
||||
}
|
||||
log.Printf("%s Page Reqest for url=\"%s\" [%s]\n", req.RemoteAddr, u, req.URL.Path)
|
||||
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", u)
|
||||
fmt.Fprintf(out, "<FORM ACTION=\"/\"><INPUT TYPE=\"TEXT\" NAME=\"url\" VALUE=\"%s\" SIZE=\"20\">", u)
|
||||
fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" VALUE=\"Go\"> \n")
|
||||
fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" NAME=\"pg\" VALUE=\"Up\"> \n")
|
||||
fmt.Fprintf(out, "<INPUT TYPE=\"TEXT\" NAME=\"p\" VALUE=\"%d\" SIZE=\"2\"> \n", p)
|
||||
fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" NAME=\"pg\" VALUE=\"Dn\"> \n")
|
||||
fmt.Fprintf(out, "I <INPUT TYPE=\"CHECKBOX\" NAME=\"i\" %s> \n", istr)
|
||||
fmt.Fprintf(out, "W <INPUT TYPE=\"TEXT\" NAME=\"w\" VALUE=\"%d\" SIZE=\"4\"> \n", w)
|
||||
fmt.Fprintf(out, "H <INPUT TYPE=\"TEXT\" NAME=\"h\" VALUE=\"%d\" SIZE=\"4\"> \n", h)
|
||||
fmt.Fprintf(out, "S <INPUT TYPE=\"TEXT\" NAME=\"s\" VALUE=\"%1.2f\" SIZE=\"3\"> \n", s)
|
||||
fmt.Fprintf(out, "C <INPUT TYPE=\"TEXT\" NAME=\"c\" VALUE=\"%d\" SIZE=\"3\"> \n", c)
|
||||
fmt.Fprintf(out, "</FORM><BR>\n")
|
||||
if len(u) > 1 {
|
||||
if strings.HasPrefix(u, "http") {
|
||||
capture(u, w, h, s, int(c), p, i, req.RemoteAddr, out)
|
||||
} else {
|
||||
capture(fmt.Sprintf("http://www.google.com/search?q=%s", url.QueryEscape(u)), w, h, s, int(c), p, i, req.RemoteAddr, out)
|
||||
}
|
||||
} else {
|
||||
fmt.Fprintf(out, "No URL or search query specified")
|
||||
}
|
||||
fmt.Fprintf(out, "\n<P><A HREF=\"/?url=https://github.com/tenox7/wrp/&w=%d&h=%d&s=%1.2f&c=%d%s\">Web Rendering Proxy Version %s</A></BODY>\n</HTML>\n", w, h, s, c, ion, version)
|
||||
}
|
||||
|
||||
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 mapServer(out http.ResponseWriter, req *http.Request) {
|
||||
log.Printf("%s ISMAP Request for %s [%+v]\n", req.RemoteAddr, req.URL.Path, req.URL.RawQuery)
|
||||
var loc string
|
||||
var x, y int64
|
||||
n, err := fmt.Sscanf(req.URL.RawQuery, "%d,%d", &x, &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
|
||||
}
|
||||
is, ok := ismap[req.URL.Path]
|
||||
if !ok || is == nil {
|
||||
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)
|
||||
for _, i := range is {
|
||||
if x >= i.xmin && x <= i.xmax && y >= i.ymin && y <= i.ymax {
|
||||
loc = i.url
|
||||
}
|
||||
}
|
||||
if len(loc) < 1 {
|
||||
loc = is[0].url
|
||||
}
|
||||
log.Printf("%s ISMAP Redirect to: http://%s%s\n", req.RemoteAddr, req.Context().Value(http.LocalAddrContextKey), loc)
|
||||
http.Redirect(out, req, fmt.Sprintf("http://%s%s", req.Context().Value(http.LocalAddrContextKey), loc), 301)
|
||||
}
|
||||
|
||||
func capture(gourl string, w int64, h int64, s float64, co int, p int64, i bool, c string, out http.ResponseWriter) {
|
||||
var nodes []*cdp.Node
|
||||
ctxx := chromedp.FromContext(ctx)
|
||||
var pngbuf []byte
|
||||
var gifbuf bytes.Buffer
|
||||
var loc string
|
||||
var res *runtime.RemoteObject
|
||||
is := make([]Ismap, 0)
|
||||
var ion string
|
||||
|
||||
log.Printf("%s Processing Caputure Request for %s\n", c, gourl)
|
||||
|
||||
// Run ChromeDP Magic
|
||||
err := chromedp.Run(ctx,
|
||||
emulation.SetDeviceMetricsOverride(int64(float64(w)/s), int64(float64(h)/s), s, false),
|
||||
chromedp.Navigate(gourl),
|
||||
chromedp.Evaluate(fmt.Sprintf("window.scrollTo(0, %d);", p*int64(float64(h)*float64(0.9))), &res),
|
||||
chromedp.Sleep(time.Second*1),
|
||||
chromedp.CaptureScreenshot(&pngbuf),
|
||||
chromedp.Location(&loc),
|
||||
chromedp.Nodes("a", &nodes, chromedp.ByQueryAll))
|
||||
|
||||
if err != nil {
|
||||
log.Printf("%s %s", c, err)
|
||||
fmt.Fprintf(out, "<BR>%s<BR>", err)
|
||||
return
|
||||
}
|
||||
|
||||
log.Printf("%s Landed on: %s, Nodes: %d\n", c, loc, len(nodes))
|
||||
|
||||
// Process Screenshot Image
|
||||
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: co})
|
||||
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
|
||||
}
|
||||
seq := rand.Intn(9999)
|
||||
imgpath := fmt.Sprintf("/img/%04d.gif", seq)
|
||||
mappath := fmt.Sprintf("/map/%04d.map", seq)
|
||||
log.Printf("%s Encoded GIF image: %s, Size: %dKB\n", c, imgpath, len(gifbuf.Bytes())/1024)
|
||||
gifmap[imgpath] = gifbuf
|
||||
|
||||
// Process Nodes
|
||||
base, _ := url.Parse(loc)
|
||||
if i {
|
||||
fmt.Fprintf(out, "<A HREF=\"%s\"><IMG SRC=\"%s\" ALT=\"wrp\" BORDER=\"0\" ISMAP></A>", mappath, imgpath)
|
||||
is = append(is, Ismap{xmin: -1, xmax: -1, ymin: -1, ymax: -1, url: fmt.Sprintf("/?url=%s&w=%d&h=%d&s=%1.2f&c=%d&i=on", loc, w, h, s, co)})
|
||||
ion = "&i=on"
|
||||
} else {
|
||||
fmt.Fprintf(out, "<IMG SRC=\"%s\" ALT=\"wrp\" BORDER=\"0\" USEMAP=\"#map\">\n<MAP NAME=\"map\">\n", imgpath)
|
||||
}
|
||||
|
||||
for _, n := range nodes {
|
||||
b, err := dom.GetBoxModel().WithNodeID(n.NodeID).Do(cdp.WithExecutor(ctx, ctxx.Target))
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
tgt, err := base.Parse(n.AttributeValue("href"))
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
target := fmt.Sprintf("/?url=%s&w=%d&h=%d&s=%1.2f&c=%d%s", tgt, w, h, s, co, ion) // no page# here
|
||||
|
||||
if len(b.Content) > 6 && len(target) > 7 {
|
||||
if i {
|
||||
is = append(is, Ismap{
|
||||
xmin: int64(b.Content[0] * s), ymin: int64(b.Content[1] * s),
|
||||
xmax: int64(b.Content[4] * s), ymax: int64(b.Content[5] * s),
|
||||
url: target})
|
||||
} else {
|
||||
fmt.Fprintf(out, "<AREA SHAPE=\"RECT\" COORDS=\"%.f,%.f,%.f,%.f\" ALT=\"%s\" TITLE=\"%s\" HREF=\"%s\">\n",
|
||||
b.Content[0]*s, b.Content[1]*s, b.Content[4]*s, b.Content[5]*s, n.AttributeValue("href"), n.AttributeValue("href"), target)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if i {
|
||||
log.Printf("%s Encoded ISMAP %s\n", c, mappath)
|
||||
} else {
|
||||
fmt.Fprintf(out, "</MAP>\n")
|
||||
}
|
||||
out.(http.Flusher).Flush()
|
||||
log.Printf("%s Done with caputure for %s\n", c, gourl)
|
||||
ismap[mappath] = is
|
||||
}
|
||||
|
||||
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),
|
||||
)
|
||||
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("/img/", imgServer)
|
||||
http.HandleFunc("/map/", mapServer)
|
||||
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)
|
||||
http.ListenAndServe(addr, nil)
|
||||
}
|
||||
Loading…
Reference in New Issue