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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| package server | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "bytes" | ||
| "image" | ||
| "image/color" | ||
| "image/draw" | ||
| "image/jpeg" | ||
| "net/http" | ||
| "strings" | ||
|
|
||
| "github.com/axllent/mailpit/logger" | ||
| "github.com/axllent/mailpit/storage" | ||
| "github.com/disintegration/imaging" | ||
| "github.com/gorilla/mux" | ||
| "github.com/jhillyerd/enmime" | ||
| ) | ||
|
|
||
| var ( | ||
| thumbWidth = 180 | ||
| thumbHeight = 120 | ||
| ) | ||
|
|
||
| // Attachment thumbnail (images only) | ||
| func apiAttachmentThumbnail(w http.ResponseWriter, r *http.Request) { | ||
| vars := mux.Vars(r) | ||
|
|
||
| id := vars["id"] | ||
| partID := vars["partID"] | ||
|
|
||
| a, err := storage.GetAttachmentPart(id, partID) | ||
| if err != nil { | ||
| httpError(w, err.Error()) | ||
| return | ||
| } | ||
|
|
||
| fileName := a.FileName | ||
| if fileName == "" { | ||
| fileName = a.ContentID | ||
| } | ||
|
|
||
| if !strings.HasPrefix(a.ContentType, "image/") { | ||
| blankImage(a, w) | ||
| return | ||
| } | ||
|
|
||
| buf := bytes.NewBuffer(a.Content) | ||
|
|
||
| img, err := imaging.Decode(buf) | ||
| if err != nil { | ||
| // it's not an image, return default | ||
| logger.Log().Warning(err) | ||
| blankImage(a, w) | ||
| return | ||
| } | ||
|
|
||
| var b bytes.Buffer | ||
| foo := bufio.NewWriter(&b) | ||
|
|
||
| var dstImageFill *image.NRGBA | ||
|
|
||
| if img.Bounds().Dx() < thumbWidth || img.Bounds().Dy() < thumbHeight { | ||
| dstImageFill = imaging.Fit(img, thumbWidth, thumbHeight, imaging.Lanczos) | ||
| } else { | ||
| dstImageFill = imaging.Fill(img, thumbWidth, thumbHeight, imaging.Center, imaging.Lanczos) | ||
| } | ||
| // create white image and paste image over the top | ||
| // preventing black backgrounds for transparent GIF/PNG images | ||
| dst := imaging.New(thumbWidth, thumbHeight, color.White) | ||
| // paste the original over the top | ||
| dst = imaging.OverlayCenter(dst, dstImageFill, 1.0) | ||
|
|
||
| if err := jpeg.Encode(foo, dst, &jpeg.Options{Quality: 70}); err != nil { | ||
| logger.Log().Warning(err) | ||
| blankImage(a, w) | ||
| return | ||
| } | ||
|
|
||
| w.Header().Add("Content-Type", "image/jpeg") | ||
| w.Header().Set("Content-Disposition", "filename=\""+fileName+"\"") | ||
| _, _ = w.Write(b.Bytes()) | ||
| } | ||
|
|
||
| // Return a blank image instead of an error when file or image not supported | ||
| func blankImage(a *enmime.Part, w http.ResponseWriter) { | ||
| rect := image.Rect(0, 0, thumbWidth, thumbHeight) | ||
| img := image.NewRGBA(rect) | ||
| background := color.RGBA{255, 255, 255, 255} | ||
| draw.Draw(img, img.Bounds(), &image.Uniform{background}, image.ZP, draw.Src) | ||
| var b bytes.Buffer | ||
| foo := bufio.NewWriter(&b) | ||
| dstImageFill := imaging.Fill(img, thumbWidth, thumbHeight, imaging.Center, imaging.Lanczos) | ||
|
|
||
| if err := jpeg.Encode(foo, dstImageFill, &jpeg.Options{Quality: 70}); err != nil { | ||
| logger.Log().Warning(err) | ||
| } | ||
|
|
||
| fileName := a.FileName | ||
| if fileName == "" { | ||
| fileName = a.ContentID | ||
| } | ||
|
|
||
| w.Header().Add("Content-Type", "image/jpeg") | ||
| w.Header().Set("Content-Disposition", "filename=\""+fileName+"\"") | ||
| _, _ = w.Write(b.Bytes()) | ||
| } |
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