diff --git a/wrp.go b/wrp.go index 23a45bb..289fa4a 100644 --- a/wrp.go +++ b/wrp.go @@ -54,112 +54,112 @@ type geom struct { // WRP Request 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 - T string // imgtype - o http.ResponseWriter - r *http.Request + url string // url + width int64 // width + height int64 // height + scale float64 // scale + colors int64 // #colors + mouseX int64 // mouseX + mouseY int64 // mouseY + keys string // keys to send + buttons string // Fn buttons + imgType string // imgtype + out http.ResponseWriter + req *http.Request } // Parse HTML Form, Process Input Boxes, Etc. func (w *wrpReq) parseForm() { - w.r.ParseForm() - w.U = w.r.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.req.ParseForm() + w.url = w.req.FormValue("url") + if len(w.url) > 1 && !strings.HasPrefix(w.url, "http") { + w.url = fmt.Sprintf("http://www.google.com/search?q=%s", url.QueryEscape(w.url)) } - w.W, _ = strconv.ParseInt(w.r.FormValue("w"), 10, 64) - w.H, _ = strconv.ParseInt(w.r.FormValue("h"), 10, 64) - if w.W < 10 && w.H < 10 { - w.W = defgeom.w - w.H = defgeom.h + w.width, _ = strconv.ParseInt(w.req.FormValue("w"), 10, 64) + w.height, _ = strconv.ParseInt(w.req.FormValue("h"), 10, 64) + if w.width < 10 && w.height < 10 { + w.width = defgeom.w + w.height = defgeom.h } - w.S, _ = strconv.ParseFloat(w.r.FormValue("s"), 64) - if w.S < 0.1 { - w.S = 1.0 + w.scale, _ = strconv.ParseFloat(w.req.FormValue("s"), 64) + if w.scale < 0.1 { + w.scale = 1.0 } - w.C, _ = strconv.ParseInt(w.r.FormValue("c"), 10, 64) - if w.C < 2 || w.C > 256 { - w.C = defgeom.c + w.colors, _ = strconv.ParseInt(w.req.FormValue("c"), 10, 64) + if w.colors < 2 || w.colors > 256 { + w.colors = defgeom.c } - w.K = w.r.FormValue("k") - w.F = w.r.FormValue("Fn") - w.T = w.r.FormValue("t") - if w.T != "gif" && w.T != "png" { - w.T = deftype + w.keys = w.req.FormValue("k") + w.buttons = w.req.FormValue("Fn") + w.imgType = w.req.FormValue("t") + if w.imgType != "gif" && w.imgType != "png" { + w.imgType = deftype } - log.Printf("%s WrpReq from Form: %+v\n", w.r.RemoteAddr, w) + log.Printf("%s WrpReq from Form: %+v\n", w.req.RemoteAddr, w) } // Display WP UI // TODO: make this in to an external template func (w wrpReq) printPage(bgcolor string) { var s string - w.o.Header().Set("Cache-Control", "max-age=0") - w.o.Header().Set("Expires", "-1") - w.o.Header().Set("Pragma", "no-cache") - w.o.Header().Set("Content-Type", "text/html") - fmt.Fprintf(w.o, "\n", version) - fmt.Fprintf(w.o, "\n
"+
+ fmt.Fprintf(w.out, "\n "+
"Web Rendering Proxy Version %s | Shutdown WRP | "+
- "Page Height: %s | Img Size: %s\n\n", w.W, w.H, w.S, w.C, w.T, version, h, s)
+ "Page Height: %s | Img Size: %s
%s
-- restarting, try again", err)
+ log.Printf("%s Contex cancelled, try again", w.req.RemoteAddr)
+ fmt.Fprintf(w.out, "
%s
-- restarting, try again", err)
ctx, cancel = chromedp.NewContext(context.Background())
} else {
- log.Printf("%s %s", w.r.RemoteAddr, err)
- fmt.Fprintf(w.o, "
%s
", err)
+ log.Printf("%s %s", w.req.RemoteAddr, err)
+ fmt.Fprintf(w.out, "
%s
", err)
}
return
}
@@ -294,9 +294,9 @@ func (w wrpReq) capture() {
var h int64
var pngcap []byte
chromedp.Run(ctx,
- emulation.SetDeviceMetricsOverride(int64(float64(w.W)/w.S), 10, w.S, false),
+ emulation.SetDeviceMetricsOverride(int64(float64(w.width)/w.scale), 10, w.scale, false),
chromedp.Sleep(time.Second*2),
- chromedp.Location(&w.U),
+ chromedp.Location(&w.url),
chromedp.ComputedStyle("body", &styles, chromedp.ByQuery),
chromedp.ActionFunc(func(ctx context.Context) error {
_, _, s, err := page.GetLayoutMetrics().Do(ctx)
@@ -311,56 +311,57 @@ func (w wrpReq) capture() {
fmt.Sscanf(style.Value, "rgb(%d,%d,%d)", &r, &g, &b)
}
}
- log.Printf("%s Landed on: %s, Height: %v\n", w.r.RemoteAddr, w.U, h)
+ log.Printf("%s Landed on: %s, Height: %v\n", w.req.RemoteAddr, w.url, h)
w.printPage(fmt.Sprintf("#%02X%02X%02X", r, g, b))
- if w.H == 0 && h > 0 {
- chromedp.Run(ctx, emulation.SetDeviceMetricsOverride(int64(float64(w.W)/w.S), h+30, w.S, false))
+ if w.height == 0 && h > 0 {
+ chromedp.Run(ctx, emulation.SetDeviceMetricsOverride(int64(float64(w.width)/w.scale), h+30, w.scale, false))
} else {
- chromedp.Run(ctx, emulation.SetDeviceMetricsOverride(int64(float64(w.W)/w.S), int64(float64(w.H)/w.S), w.S, false))
+ chromedp.Run(ctx, emulation.SetDeviceMetricsOverride(int64(float64(w.width)/w.scale), int64(float64(w.height)/w.scale), w.scale, false))
}
err = chromedp.Run(ctx, chromedp.CaptureScreenshot(&pngcap))
if err != nil {
- log.Printf("%s Failed to capture screenshot: %s\n", w.r.RemoteAddr, err)
- fmt.Fprintf(w.o, "
Unable to capture screenshot:
%s
\n", err)
+ // TODO: process context cancelled here
+ log.Printf("%s Failed to capture screenshot: %s\n", w.req.RemoteAddr, err)
+ fmt.Fprintf(w.out, "
Unable to capture screenshot:
%s
\n", err)
return
}
seq := rand.Intn(9999)
- imgpath := fmt.Sprintf("/img/%04d.%s", seq, w.T)
+ imgpath := fmt.Sprintf("/img/%04d.%s", seq, w.imgType)
mappath := fmt.Sprintf("/map/%04d.map", seq)
ismap[mappath] = w
var ssize string
var sw, sh int
- if w.T == "gif" {
+ if w.imgType == "gif" {
i, err := png.Decode(bytes.NewReader(pngcap))
if err != nil {
- log.Printf("%s Failed to decode screenshot: %s\n", w.r.RemoteAddr, err)
- fmt.Fprintf(w.o, "
Unable to decode page screenshot:
%s
\n", err)
+ log.Printf("%s Failed to decode screenshot: %s\n", w.req.RemoteAddr, err)
+ fmt.Fprintf(w.out, "
Unable to decode page screenshot:
%s
\n", err)
return
}
var gifbuf bytes.Buffer
- err = gif.Encode(&gifbuf, i, &gif.Options{NumColors: int(w.C), Quantizer: quantize.MedianCutQuantizer{}})
+ err = gif.Encode(&gifbuf, i, &gif.Options{NumColors: int(w.colors), Quantizer: quantize.MedianCutQuantizer{}})
if err != nil {
- log.Printf("%s Failed to encode GIF: %s\n", w.r.RemoteAddr, err)
- fmt.Fprintf(w.o, "
Unable to encode GIF:
%s
\n", err)
+ log.Printf("%s Failed to encode GIF: %s\n", w.req.RemoteAddr, err)
+ fmt.Fprintf(w.out, "
Unable to encode GIF:
%s
\n", err)
return
}
img[imgpath] = gifbuf
ssize = fmt.Sprintf("%.1f MB", float32(len(gifbuf.Bytes()))/1024.0/1024.0)
sw = i.Bounds().Max.X
sh = i.Bounds().Max.Y
- log.Printf("%s Encoded GIF image: %s, Size: %s, Colors: %d, %dx%d\n", w.r.RemoteAddr, imgpath, ssize, w.C, sw, sh)
- } else if w.T == "png" {
+ log.Printf("%s Encoded GIF image: %s, Size: %s, Colors: %d, %dx%d\n", w.req.RemoteAddr, imgpath, ssize, w.colors, sw, sh)
+ } else if w.imgType == "png" {
pngbuf := bytes.NewBuffer(pngcap)
img[imgpath] = *pngbuf
cfg, _, _ := image.DecodeConfig(pngbuf)
ssize = fmt.Sprintf("%.1f MB", float32(len(pngbuf.Bytes()))/1024.0/1024.0)
sw = cfg.Width
sh = cfg.Height
- log.Printf("%s Got PNG image: %s, Size: %s, %dx%d\n", w.r.RemoteAddr, imgpath, ssize, sw, sh)
+ log.Printf("%s Got PNG image: %s, Size: %s, %dx%d\n", w.req.RemoteAddr, imgpath, ssize, sw, sh)
}
- fmt.Fprintf(w.o, "", mappath, imgpath, w.U, ssize, sw, sh)
+ fmt.Fprintf(w.out, "", mappath, imgpath, w.url, ssize, sw, sh)
w.printFooter(fmt.Sprintf("%d PX", h), ssize)
- log.Printf("%s Done with caputure for %s\n", w.r.RemoteAddr, w.U)
+ log.Printf("%s Done with caputure for %s\n", w.req.RemoteAddr, w.url)
}
// Main...