mirror of https://github.com/tenox7/wrp.git
Merge branch 'clicky'
This commit is contained in:
Antoni Sawicki
commit
9557f172ed
296
wrp.go
296
wrp.go
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|
@ -23,96 +23,122 @@ import (
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"time"
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"github.com/chromedp/cdproto/emulation"
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"github.com/chromedp/cdproto/runtime"
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"github.com/chromedp/cdproto/cdp"
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"github.com/chromedp/cdproto/dom"
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"github.com/chromedp/chromedp"
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"github.com/ericpauley/go-quantize/quantize"
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)
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// Ismap for server side processing
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type Ismap struct {
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xmin int64
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ymin int64
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xmax int64
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ymax int64
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url string
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}
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var (
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version = "3.0"
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version = "4.0"
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srv http.Server
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ctx context.Context
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cancel context.CancelFunc
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gifmap = make(map[string]bytes.Buffer)
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ismap = make(map[string][]Ismap)
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ismap = make(map[string]wrpReq)
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)
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func pageServer(out http.ResponseWriter, req *http.Request) {
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type wrpReq struct {
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U string // url
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W int64 // width
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H int64 // height
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S float64 // scale
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C int64 // #colors
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X int64 // mouseX
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Y int64 // mouseY
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K string // keys to send
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B bool // history back
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}
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func (w *wrpReq) parseForm(req *http.Request) {
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req.ParseForm()
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u := req.FormValue("url")
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var istr string
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var ion string
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var i bool
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if req.FormValue("i") == "on" {
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istr = "CHECKED"
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i = true
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ion = "&i=on"
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} else {
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istr = ""
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i = false
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w.U = req.FormValue("url")
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if len(w.U) > 1 && !strings.HasPrefix(w.U, "http") {
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w.U = fmt.Sprintf("http://www.google.com/search?q=%s", url.QueryEscape(w.U))
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}
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p, _ := strconv.ParseInt(req.FormValue("p"), 10, 64)
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if req.FormValue("pg") == "Dn" {
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p++
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} else if req.FormValue("pg") == "Up" {
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p--
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} else {
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p = 0
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w.W, _ = strconv.ParseInt(req.FormValue("w"), 10, 64)
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if w.W < 10 {
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w.W = 1152
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}
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w, _ := strconv.ParseInt(req.FormValue("w"), 10, 64)
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if w < 10 {
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w = 1024
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w.H, _ = strconv.ParseInt(req.FormValue("h"), 10, 64)
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if w.H < 10 {
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w.H = 600
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}
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h, _ := strconv.ParseInt(req.FormValue("h"), 10, 64)
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if h < 10 {
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h = 768
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w.S, _ = strconv.ParseFloat(req.FormValue("s"), 64)
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if w.S < 0.1 {
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w.S = 1.0
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}
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s, _ := strconv.ParseFloat(req.FormValue("s"), 64)
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if s < 0.1 {
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s = 1.0
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w.C, _ = strconv.ParseInt(req.FormValue("c"), 10, 64)
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if w.C < 2 || w.C > 256 {
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w.C = 256
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}
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c, _ := strconv.ParseInt(req.FormValue("c"), 10, 64)
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if c < 2 || c > 256 {
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c = 256
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w.K = req.FormValue("k")
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if w.K == "\\b" {
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w.K = "\b"
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} else if w.K == "\\r" {
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w.K = "\r"
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}
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log.Printf("%s Page Request for url=\"%s\" [%s]\n", req.RemoteAddr, u, req.URL.Path)
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if req.FormValue("hist") == "Back" {
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w.B = true
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}
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log.Printf("WrpReq from Form: %+v\n", w)
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}
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func (w wrpReq) printPage(out http.ResponseWriter) {
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out.Header().Set("Content-Type", "text/html")
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fmt.Fprintf(out, "<!-- Web Rendering Proxy Version %s -->\n", version)
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fmt.Fprintf(out, "<HTML>\n<HEAD><TITLE>WRP %s</TITLE></HEAD>\n<BODY BGCOLOR=\"#F0F0F0\">\n", u)
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fmt.Fprintf(out, "<FORM ACTION=\"/\"><INPUT TYPE=\"TEXT\" NAME=\"url\" VALUE=\"%s\" SIZE=\"20\">", u)
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fmt.Fprintf(out, "<HTML>\n<HEAD><TITLE>WRP %s</TITLE></HEAD>\n<BODY BGCOLOR=\"#F0F0F0\">\n", w.U)
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fmt.Fprintf(out, "<FORM ACTION=\"/\"><INPUT TYPE=\"SUBMIT\" NAME=\"hist\" VALUE=\"Back\">\n")
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fmt.Fprintf(out, "<INPUT TYPE=\"TEXT\" NAME=\"url\" VALUE=\"%s\" SIZE=\"40\">", w.U)
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fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" VALUE=\"Go\"> \n")
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fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" NAME=\"pg\" VALUE=\"Up\"> \n")
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fmt.Fprintf(out, "<INPUT TYPE=\"TEXT\" NAME=\"p\" VALUE=\"%d\" SIZE=\"2\"> \n", p)
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fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" NAME=\"pg\" VALUE=\"Dn\"> \n")
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fmt.Fprintf(out, "I <INPUT TYPE=\"CHECKBOX\" NAME=\"i\" %s> \n", istr)
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fmt.Fprintf(out, "W <INPUT TYPE=\"TEXT\" NAME=\"w\" VALUE=\"%d\" SIZE=\"4\"> \n", w)
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fmt.Fprintf(out, "H <INPUT TYPE=\"TEXT\" NAME=\"h\" VALUE=\"%d\" SIZE=\"4\"> \n", h)
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fmt.Fprintf(out, "S <INPUT TYPE=\"TEXT\" NAME=\"s\" VALUE=\"%1.2f\" SIZE=\"3\"> \n", s)
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fmt.Fprintf(out, "C <INPUT TYPE=\"TEXT\" NAME=\"c\" VALUE=\"%d\" SIZE=\"3\"> \n", c)
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fmt.Fprintf(out, "W <INPUT TYPE=\"TEXT\" NAME=\"w\" VALUE=\"%d\" SIZE=\"4\"> \n", w.W)
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fmt.Fprintf(out, "H <INPUT TYPE=\"TEXT\" NAME=\"h\" VALUE=\"%d\" SIZE=\"4\"> \n", w.H)
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fmt.Fprintf(out, "S <INPUT TYPE=\"TEXT\" NAME=\"s\" VALUE=\"%1.2f\" SIZE=\"3\"> \n", w.S)
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fmt.Fprintf(out, "C <INPUT TYPE=\"TEXT\" NAME=\"c\" VALUE=\"%d\" SIZE=\"3\"> \n", w.C)
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fmt.Fprintf(out, "K <INPUT TYPE=\"TEXT\" NAME=\"k\" VALUE=\"\" SIZE=\"8\"> \n")
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fmt.Fprintf(out, "</FORM><BR>\n")
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if len(u) > 1 {
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if strings.HasPrefix(u, "http") {
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capture(u, w, h, s, int(c), p, i, req.RemoteAddr, out)
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} else {
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capture(fmt.Sprintf("http://www.google.com/search?q=%s", url.QueryEscape(u)), w, h, s, int(c), p, i, req.RemoteAddr, out)
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}
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}
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func (w wrpReq) printFooter(out http.ResponseWriter) {
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fmt.Fprintf(out, "\n<P><A HREF=\"/?url=https://github.com/tenox7/wrp/&w=%d&h=%d&s=%1.2f&c=%d\">"+
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"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)
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}
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func pageServer(out http.ResponseWriter, req *http.Request) {
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log.Printf("%s Page Request for %s [%+v]\n", req.RemoteAddr, req.URL.Path, req.URL.RawQuery)
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var w wrpReq
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w.parseForm(req)
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if len(w.U) > 4 {
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w.capture(req.RemoteAddr, out)
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} else {
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fmt.Fprintf(out, "No URL or search query specified")
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w.printPage(out)
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w.printFooter(out)
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}
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}
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func mapServer(out http.ResponseWriter, req *http.Request) {
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log.Printf("%s ISMAP Request for %s [%+v]\n", req.RemoteAddr, req.URL.Path, req.URL.RawQuery)
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w, ok := ismap[req.URL.Path]
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if !ok {
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fmt.Fprintf(out, "Unable to find map %s\n", req.URL.Path)
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log.Printf("Unable to find map %s\n", req.URL.Path)
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return
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}
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defer delete(ismap, req.URL.Path)
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n, err := fmt.Sscanf(req.URL.RawQuery, "%d,%d", &w.X, &w.Y)
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if err != nil || n != 2 {
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fmt.Fprintf(out, "n=%d, err=%s\n", n, err)
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log.Printf("%s ISMAP n=%d, err=%s\n", req.RemoteAddr, n, err)
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return
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}
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log.Printf("%s WrpReq from ISMAP: %+v\n", req.RemoteAddr, w)
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if len(w.U) > 4 {
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w.capture(req.RemoteAddr, out)
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} else {
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w.printPage(out)
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w.printFooter(out)
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}
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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> | <A HREF=\"/shutdown/\">Shutdown WRP</A></BODY>\n</HTML>\n", w, h, s, c, ion, version)
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}
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func imgServer(out http.ResponseWriter, req *http.Request) {
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@ -130,55 +156,33 @@ func imgServer(out http.ResponseWriter, req *http.Request) {
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out.(http.Flusher).Flush()
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}
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func mapServer(out http.ResponseWriter, req *http.Request) {
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log.Printf("%s ISMAP Request for %s [%+v]\n", req.RemoteAddr, req.URL.Path, req.URL.RawQuery)
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var loc string
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var x, y int64
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n, err := fmt.Sscanf(req.URL.RawQuery, "%d,%d", &x, &y)
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if err != nil || n != 2 {
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fmt.Fprintf(out, "n=%d, err=%s\n", n, err)
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log.Printf("%s ISMAP n=%d, err=%s\n", req.RemoteAddr, n, err)
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return
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}
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is, ok := ismap[req.URL.Path]
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if !ok || is == nil {
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fmt.Fprintf(out, "Unable to find map %s\n", req.URL.Path)
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log.Printf("Unable to find map %s\n", req.URL.Path)
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return
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}
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defer delete(ismap, req.URL.Path)
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for _, i := range is {
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if x >= i.xmin && x <= i.xmax && y >= i.ymin && y <= i.ymax {
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loc = i.url
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}
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}
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if len(loc) < 1 {
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loc = is[0].url
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}
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log.Printf("%s ISMAP Redirect to: http://%s%s\n", req.RemoteAddr, req.Context().Value(http.LocalAddrContextKey), loc)
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http.Redirect(out, req, fmt.Sprintf("http://%s%s", req.Context().Value(http.LocalAddrContextKey), loc), 301)
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}
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func capture(gourl string, w int64, h int64, s float64, co int, p int64, i bool, c string, out http.ResponseWriter) {
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var nodes []*cdp.Node
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ctxx := chromedp.FromContext(ctx)
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func (w wrpReq) capture(c string, out http.ResponseWriter) {
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var pngbuf []byte
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var gifbuf bytes.Buffer
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var loc string
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var res *runtime.RemoteObject
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is := make([]Ismap, 0)
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var ion string
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var err error
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log.Printf("%s Processing Capture Request for %s\n", c, gourl)
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// Run ChromeDP Magic
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err := chromedp.Run(ctx,
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emulation.SetDeviceMetricsOverride(int64(float64(w)/s), int64(float64(h)/s), s, false),
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chromedp.Navigate(gourl),
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chromedp.Evaluate(fmt.Sprintf("window.scrollTo(0, %d);", p*int64(float64(h)*float64(0.9))), &res),
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chromedp.Sleep(time.Second*1),
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chromedp.CaptureScreenshot(&pngbuf),
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chromedp.Location(&loc))
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if w.X > 0 && w.Y > 0 {
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log.Printf("%s Mouse Click %d,%d\n", c, w.X, w.Y)
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chromedp.Run(ctx,
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chromedp.MouseClickXY(int64(float64(w.X)/w.S), int64(float64(w.Y)/w.S)),
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)
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} else if w.B {
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log.Printf("%s History Back\n", c)
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chromedp.Run(ctx,
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chromedp.NavigateBack(),
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)
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} else if len(w.K) > 0 {
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log.Printf("%s Sending Keys: %#v\n", c, w.K)
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err = chromedp.Run(ctx,
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chromedp.KeyEvent(w.K),
|
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)
|
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} else {
|
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log.Printf("%s Processing Capture Request for %s\n", c, w.U)
|
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err = chromedp.Run(ctx,
|
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emulation.SetDeviceMetricsOverride(int64(float64(w.W)/w.S), int64(float64(w.H)/w.S), w.S, false),
|
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chromedp.Navigate(w.U),
|
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)
|
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}
|
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|
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if err != nil {
|
||||
if err.Error() == "context canceled" {
|
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|
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@ -192,9 +196,20 @@ func capture(gourl string, w int64, h int64, s float64, co int, p int64, i bool,
|
|||
return
|
||||
}
|
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|
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log.Printf("%s Landed on: %s, Nodes: %d\n", c, loc, len(nodes))
|
||||
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 {
|
||||
|
|
@ -203,63 +218,23 @@ func capture(gourl string, w int64, h int64, s float64, co int, p int64, i bool,
|
|||
return
|
||||
}
|
||||
gifbuf.Reset()
|
||||
err = gif.Encode(&gifbuf, img, &gif.Options{NumColors: co, Quantizer: quantize.MedianCutQuantizer{}})
|
||||
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)
|
||||
log.Printf("%s Encoded GIF image: %s, Size: %dKB, Colors: %d\n", c, imgpath, len(gifbuf.Bytes())/1024, co)
|
||||
gifmap[imgpath] = gifbuf
|
||||
|
||||
// Process Nodes
|
||||
tctx, cancel := context.WithTimeout(ctx, time.Second*2) // a context with timeout is needed for pages without nodes
|
||||
defer cancel()
|
||||
chromedp.Run(tctx, chromedp.Nodes("a", &nodes, chromedp.ByQueryAll))
|
||||
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.Padding) > 6 && len(target) > 7 {
|
||||
if i {
|
||||
is = append(is, Ismap{
|
||||
xmin: int64(b.Padding[0] * s), ymin: int64(b.Padding[1] * s),
|
||||
xmax: int64(b.Padding[4] * s), ymax: int64(b.Padding[5] * s),
|
||||
url: target})
|
||||
} else {
|
||||
fmt.Fprintf(out, "<AREA SHAPE=\"RECT\" COORDS=\"%.f,%.f,%.f,%.f\" ALT=\"%s\" TITLE=\"%s\" HREF=\"%s\">\n",
|
||||
b.Padding[0]*s, b.Padding[1]*s, b.Padding[4]*s, b.Padding[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")
|
||||
}
|
||||
ismap[mappath] = is
|
||||
out.(http.Flusher).Flush()
|
||||
log.Printf("%s Done with caputure for %s\n", c, gourl)
|
||||
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) {
|
||||
|
|
@ -283,6 +258,7 @@ func main() {
|
|||
}
|
||||
opts := append(chromedp.DefaultExecAllocatorOptions[:],
|
||||
chromedp.Flag("headless", headless),
|
||||
chromedp.Flag("hide-scrollbars", false),
|
||||
)
|
||||
actx, cancel := chromedp.NewExecAllocator(context.Background(), opts...)
|
||||
defer cancel()
|
||||
|
|
@ -294,8 +270,8 @@ func main() {
|
|||
defer cancel()
|
||||
rand.Seed(time.Now().UnixNano())
|
||||
http.HandleFunc("/", pageServer)
|
||||
http.HandleFunc("/img/", imgServer)
|
||||
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)
|
||||
|
|
|
|||
Loading…
Reference in New Issue