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This commit is contained in:
Antoni Sawicki 2019-06-24 00:40:34 -07:00
parent 404af50aa1
commit 1f5592cbde
1 changed files with 14 additions and 65 deletions
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79
wrp.go
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@ -26,7 +26,6 @@ import (
"github.com/chromedp/cdproto/runtime" "github.com/chromedp/cdproto/runtime"
"github.com/chromedp/cdproto/cdp" "github.com/chromedp/cdproto/cdp"
"github.com/chromedp/cdproto/dom"
"github.com/chromedp/chromedp" "github.com/chromedp/chromedp"
"github.com/ericpauley/go-quantize/quantize" "github.com/ericpauley/go-quantize/quantize"
@ -53,17 +52,7 @@ var (
func pageServer(out http.ResponseWriter, req *http.Request) { func pageServer(out http.ResponseWriter, req *http.Request) {
req.ParseForm() req.ParseForm()
u := req.FormValue("url") 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) p, _ := strconv.ParseInt(req.FormValue("p"), 10, 64)
if req.FormValue("pg") == "Dn" { if req.FormValue("pg") == "Dn" {
p++ p++
@ -88,7 +77,7 @@ func pageServer(out http.ResponseWriter, req *http.Request) {
if c < 2 || c > 256 { if c < 2 || c > 256 {
c = 256 c = 256
} }
log.Printf("%s Page Request for url=\"%s\" [%s]\n", req.RemoteAddr, u, req.URL.Path) log.Printf("%s Page Request for url=\"%s\" [%s] [%+v]\n", req.RemoteAddr, u, req.URL.Path, req.URL.RawQuery)
out.Header().Set("Content-Type", "text/html") out.Header().Set("Content-Type", "text/html")
fmt.Fprintf(out, "<!-- Web Rendering Proxy Version %s -->\n", version) 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, "<HTML>\n<HEAD><TITLE>WRP %s</TITLE></HEAD>\n<BODY BGCOLOR=\"#F0F0F0\">\n", u)
@ -97,7 +86,6 @@ func pageServer(out http.ResponseWriter, req *http.Request) {
fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" NAME=\"pg\" VALUE=\"Up\"> \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=\"TEXT\" NAME=\"p\" VALUE=\"%d\" SIZE=\"2\"> \n", p)
fmt.Fprintf(out, "<INPUT TYPE=\"SUBMIT\" NAME=\"pg\" VALUE=\"Dn\"> \n") 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, "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, "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, "S <INPUT TYPE=\"TEXT\" NAME=\"s\" VALUE=\"%1.2f\" SIZE=\"3\"> \n", s)
@ -105,14 +93,14 @@ func pageServer(out http.ResponseWriter, req *http.Request) {
fmt.Fprintf(out, "</FORM><BR>\n") fmt.Fprintf(out, "</FORM><BR>\n")
if len(u) > 1 { if len(u) > 1 {
if strings.HasPrefix(u, "http") { if strings.HasPrefix(u, "http") {
capture(u, w, h, s, int(c), p, i, req.RemoteAddr, out) capture(u, w, h, s, int(c), p, req.RemoteAddr, out)
} else { } else {
capture(fmt.Sprintf("http://www.google.com/search?q=%s", url.QueryEscape(u)), w, h, s, int(c), p, i, req.RemoteAddr, out) capture(fmt.Sprintf("http://www.google.com/search?q=%s", url.QueryEscape(u)), w, h, s, int(c), p, req.RemoteAddr, out)
} }
} else { } else {
fmt.Fprintf(out, "No URL or search query specified") 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> | <A HREF=\"/shutdown/\">Shutdown WRP</A></BODY>\n</HTML>\n", w, h, s, c, ion, version) 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, h, s, c, version)
} }
func imgServer(out http.ResponseWriter, req *http.Request) { func imgServer(out http.ResponseWriter, req *http.Request) {
@ -159,15 +147,12 @@ func mapServer(out http.ResponseWriter, req *http.Request) {
http.Redirect(out, req, fmt.Sprintf("http://%s%s", req.Context().Value(http.LocalAddrContextKey), loc), 301) 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) { func capture(gourl string, w int64, h int64, s float64, co int, p int64, c string, out http.ResponseWriter) {
var nodes []*cdp.Node var nodes []*cdp.Node
ctxx := chromedp.FromContext(ctx)
var pngbuf []byte var pngbuf []byte
var gifbuf bytes.Buffer var gifbuf bytes.Buffer
var loc string var loc string
var res *runtime.RemoteObject var res *runtime.RemoteObject
is := make([]Ismap, 0)
var ion string
log.Printf("%s Processing Capture Request for %s\n", c, gourl) log.Printf("%s Processing Capture Request for %s\n", c, gourl)
@ -177,7 +162,6 @@ func capture(gourl string, w int64, h int64, s float64, co int, p int64, i bool,
chromedp.Navigate(gourl), chromedp.Navigate(gourl),
chromedp.Evaluate(fmt.Sprintf("window.scrollTo(0, %d);", p*int64(float64(h)*float64(0.9))), &res), chromedp.Evaluate(fmt.Sprintf("window.scrollTo(0, %d);", p*int64(float64(h)*float64(0.9))), &res),
chromedp.Sleep(time.Second*1), chromedp.Sleep(time.Second*1),
chromedp.CaptureScreenshot(&pngbuf),
chromedp.Location(&loc)) chromedp.Location(&loc))
if err != nil { if err != nil {
@ -195,6 +179,12 @@ func capture(gourl string, w int64, h int64, s float64, co int, p int64, i bool,
log.Printf("%s Landed on: %s, Nodes: %d\n", c, loc, len(nodes)) log.Printf("%s Landed on: %s, Nodes: %d\n", c, loc, len(nodes))
// Process Screenshot Image // 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) bytes.NewReader(pngbuf).Seek(0, 0)
img, err := png.Decode(bytes.NewReader(pngbuf)) img, err := png.Decode(bytes.NewReader(pngbuf))
if err != nil { if err != nil {
@ -211,53 +201,12 @@ func capture(gourl string, w int64, h int64, s float64, co int, p int64, i bool,
} }
seq := rand.Intn(9999) seq := rand.Intn(9999)
imgpath := fmt.Sprintf("/img/%04d.gif", seq) 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) log.Printf("%s Encoded GIF image: %s, Size: %dKB, Colors: %d\n", c, imgpath, len(gifbuf.Bytes())/1024, co)
gifmap[imgpath] = gifbuf gifmap[imgpath] = gifbuf
// Process Nodes // Gif location
tctx, cancel := context.WithTimeout(ctx, time.Second*2) // a context with timeout is needed for pages without nodes fmt.Fprintf(out, "<A HREF=\"/w=100/h=100/s=1.0/pg=3/url=%s\"><IMG SRC=\"%s\" ALT=\"wrp\" BORDER=\"0\" ISMAP></A>", loc, imgpath)
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() out.(http.Flusher).Flush()
log.Printf("%s Done with caputure for %s\n", c, gourl) log.Printf("%s Done with caputure for %s\n", c, gourl)
} }