|
|
|
@ -2,74 +2,21 @@ |
|
|
|
|
// Use of this source code is governed by a MIT-style
|
|
|
|
|
// license that can be found in the LICENSE file.
|
|
|
|
|
|
|
|
|
|
// for www.gravatar.com image cache
|
|
|
|
|
|
|
|
|
|
/* |
|
|
|
|
It is recommend to use this way |
|
|
|
|
|
|
|
|
|
cacheDir := "./cache" |
|
|
|
|
defaultImg := "./default.jpg" |
|
|
|
|
http.Handle("/avatar/", avatar.CacheServer(cacheDir, defaultImg)) |
|
|
|
|
*/ |
|
|
|
|
package avatar |
|
|
|
|
|
|
|
|
|
import ( |
|
|
|
|
"crypto/md5" |
|
|
|
|
"encoding/hex" |
|
|
|
|
"errors" |
|
|
|
|
"fmt" |
|
|
|
|
"image" |
|
|
|
|
"image/color/palette" |
|
|
|
|
"image/jpeg" |
|
|
|
|
"image/png" |
|
|
|
|
"io" |
|
|
|
|
"math/rand" |
|
|
|
|
"net/http" |
|
|
|
|
"net/url" |
|
|
|
|
"os" |
|
|
|
|
"path/filepath" |
|
|
|
|
"strings" |
|
|
|
|
"sync" |
|
|
|
|
"time" |
|
|
|
|
|
|
|
|
|
"github.com/issue9/identicon" |
|
|
|
|
"github.com/nfnt/resize" |
|
|
|
|
|
|
|
|
|
"github.com/gogits/gogs/modules/log" |
|
|
|
|
"github.com/gogits/gogs/modules/setting" |
|
|
|
|
) |
|
|
|
|
|
|
|
|
|
//FIXME: remove cache module
|
|
|
|
|
|
|
|
|
|
var gravatarSource string |
|
|
|
|
|
|
|
|
|
func UpdateGravatarSource() { |
|
|
|
|
gravatarSource = setting.GravatarSource |
|
|
|
|
if strings.HasPrefix(gravatarSource, "//") { |
|
|
|
|
gravatarSource = "http:" + gravatarSource |
|
|
|
|
} else if !strings.HasPrefix(gravatarSource, "http://") && |
|
|
|
|
!strings.HasPrefix(gravatarSource, "https://") { |
|
|
|
|
gravatarSource = "http://" + gravatarSource |
|
|
|
|
} |
|
|
|
|
log.Debug("avatar.UpdateGravatarSource(update gavatar source): %s", gravatarSource) |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// hash email to md5 string
|
|
|
|
|
// keep this func in order to make this package independent
|
|
|
|
|
func HashEmail(email string) string { |
|
|
|
|
// https://en.gravatar.com/site/implement/hash/
|
|
|
|
|
email = strings.TrimSpace(email) |
|
|
|
|
email = strings.ToLower(email) |
|
|
|
|
|
|
|
|
|
h := md5.New() |
|
|
|
|
h.Write([]byte(email)) |
|
|
|
|
return hex.EncodeToString(h.Sum(nil)) |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
const _RANDOM_AVATAR_SIZE = 200 |
|
|
|
|
|
|
|
|
|
// RandomImage generates and returns a random avatar image.
|
|
|
|
|
func RandomImage(data []byte) (image.Image, error) { |
|
|
|
|
func RandomImageSize(size int, data []byte) (image.Image, error) { |
|
|
|
|
randExtent := len(palette.WebSafe) - 32 |
|
|
|
|
rand.Seed(time.Now().UnixNano()) |
|
|
|
|
colorIndex := rand.Intn(randExtent) |
|
|
|
@ -78,262 +25,17 @@ func RandomImage(data []byte) (image.Image, error) { |
|
|
|
|
backColorIndex = randExtent - 1 |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Size, background, forecolor
|
|
|
|
|
imgMaker, err := identicon.New(_RANDOM_AVATAR_SIZE, |
|
|
|
|
// Define size, background, and forecolor
|
|
|
|
|
imgMaker, err := identicon.New(size, |
|
|
|
|
palette.WebSafe[backColorIndex], palette.WebSafe[colorIndex:colorIndex+32]...) |
|
|
|
|
if err != nil { |
|
|
|
|
return nil, err |
|
|
|
|
return nil, fmt.Errorf("identicon.New: %v", err) |
|
|
|
|
} |
|
|
|
|
return imgMaker.Make(data), nil |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// Avatar represents the avatar object.
|
|
|
|
|
type Avatar struct { |
|
|
|
|
Hash string |
|
|
|
|
AlterImage string // image path
|
|
|
|
|
cacheDir string // image save dir
|
|
|
|
|
reqParams string |
|
|
|
|
imagePath string |
|
|
|
|
expireDuration time.Duration |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
func New(hash string, cacheDir string) *Avatar { |
|
|
|
|
return &Avatar{ |
|
|
|
|
Hash: hash, |
|
|
|
|
cacheDir: cacheDir, |
|
|
|
|
expireDuration: time.Minute * 10, |
|
|
|
|
reqParams: url.Values{ |
|
|
|
|
"d": {"retro"}, |
|
|
|
|
"size": {"290"}, |
|
|
|
|
"r": {"pg"}}.Encode(), |
|
|
|
|
imagePath: filepath.Join(cacheDir, hash+".image"), //maybe png or jpeg
|
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
func (this *Avatar) HasCache() bool { |
|
|
|
|
fileInfo, err := os.Stat(this.imagePath) |
|
|
|
|
return err == nil && fileInfo.Mode().IsRegular() |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
func (this *Avatar) Modtime() (modtime time.Time, err error) { |
|
|
|
|
fileInfo, err := os.Stat(this.imagePath) |
|
|
|
|
if err != nil { |
|
|
|
|
return |
|
|
|
|
} |
|
|
|
|
return fileInfo.ModTime(), nil |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
func (this *Avatar) Expired() bool { |
|
|
|
|
modtime, err := this.Modtime() |
|
|
|
|
return err != nil || time.Since(modtime) > this.expireDuration |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// default image format: jpeg
|
|
|
|
|
func (this *Avatar) Encode(wr io.Writer, size int) (err error) { |
|
|
|
|
var img image.Image |
|
|
|
|
decodeImageFile := func(file string) (img image.Image, err error) { |
|
|
|
|
fd, err := os.Open(file) |
|
|
|
|
if err != nil { |
|
|
|
|
return |
|
|
|
|
} |
|
|
|
|
defer fd.Close() |
|
|
|
|
|
|
|
|
|
if img, err = jpeg.Decode(fd); err != nil { |
|
|
|
|
fd.Seek(0, os.SEEK_SET) |
|
|
|
|
img, err = png.Decode(fd) |
|
|
|
|
} |
|
|
|
|
return |
|
|
|
|
} |
|
|
|
|
imgPath := this.imagePath |
|
|
|
|
if !this.HasCache() { |
|
|
|
|
if this.AlterImage == "" { |
|
|
|
|
return errors.New("request image failed, and no alt image offered") |
|
|
|
|
} |
|
|
|
|
imgPath = this.AlterImage |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
if img, err = decodeImageFile(imgPath); err != nil { |
|
|
|
|
return |
|
|
|
|
} |
|
|
|
|
m := resize.Resize(uint(size), 0, img, resize.Lanczos3) |
|
|
|
|
return jpeg.Encode(wr, m, nil) |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// get image from gravatar.com
|
|
|
|
|
func (this *Avatar) Update() { |
|
|
|
|
UpdateGravatarSource() |
|
|
|
|
thunder.Fetch(gravatarSource+this.Hash+"?"+this.reqParams, |
|
|
|
|
this.imagePath) |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
func (this *Avatar) UpdateTimeout(timeout time.Duration) (err error) { |
|
|
|
|
UpdateGravatarSource() |
|
|
|
|
select { |
|
|
|
|
case <-time.After(timeout): |
|
|
|
|
err = fmt.Errorf("get gravatar image %s timeout", this.Hash) |
|
|
|
|
case err = <-thunder.GoFetch(gravatarSource+this.Hash+"?"+this.reqParams, |
|
|
|
|
this.imagePath): |
|
|
|
|
} |
|
|
|
|
return err |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
type service struct { |
|
|
|
|
cacheDir string |
|
|
|
|
altImage string |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
func (this *service) mustInt(r *http.Request, defaultValue int, keys ...string) (v int) { |
|
|
|
|
for _, k := range keys { |
|
|
|
|
if _, err := fmt.Sscanf(r.FormValue(k), "%d", &v); err == nil { |
|
|
|
|
defaultValue = v |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
return defaultValue |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
func (this *service) ServeHTTP(w http.ResponseWriter, r *http.Request) { |
|
|
|
|
urlPath := r.URL.Path |
|
|
|
|
hash := urlPath[strings.LastIndex(urlPath, "/")+1:] |
|
|
|
|
size := this.mustInt(r, 290, "s", "size") // default size = 290*290
|
|
|
|
|
|
|
|
|
|
avatar := New(hash, this.cacheDir) |
|
|
|
|
avatar.AlterImage = this.altImage |
|
|
|
|
if avatar.Expired() { |
|
|
|
|
if err := avatar.UpdateTimeout(time.Millisecond * 1000); err != nil { |
|
|
|
|
log.Trace("avatar update error: %v", err) |
|
|
|
|
return |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
if modtime, err := avatar.Modtime(); err == nil { |
|
|
|
|
etag := fmt.Sprintf("size(%d)", size) |
|
|
|
|
if t, err := time.Parse(http.TimeFormat, r.Header.Get("If-Modified-Since")); err == nil && modtime.Before(t.Add(1*time.Second)) && etag == r.Header.Get("If-None-Match") { |
|
|
|
|
h := w.Header() |
|
|
|
|
delete(h, "Content-Type") |
|
|
|
|
delete(h, "Content-Length") |
|
|
|
|
w.WriteHeader(http.StatusNotModified) |
|
|
|
|
return |
|
|
|
|
} |
|
|
|
|
w.Header().Set("Last-Modified", modtime.UTC().Format(http.TimeFormat)) |
|
|
|
|
w.Header().Set("ETag", etag) |
|
|
|
|
} |
|
|
|
|
w.Header().Set("Content-Type", "image/jpeg") |
|
|
|
|
|
|
|
|
|
if err := avatar.Encode(w, size); err != nil { |
|
|
|
|
log.Warn("avatar encode error: %v", err) |
|
|
|
|
w.WriteHeader(500) |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// http.Handle("/avatar/", avatar.CacheServer("./cache"))
|
|
|
|
|
func CacheServer(cacheDir string, defaultImgPath string) http.Handler { |
|
|
|
|
return &service{ |
|
|
|
|
cacheDir: cacheDir, |
|
|
|
|
altImage: defaultImgPath, |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// thunder downloader
|
|
|
|
|
var thunder = &Thunder{QueueSize: 10} |
|
|
|
|
|
|
|
|
|
type Thunder struct { |
|
|
|
|
QueueSize int // download queue size
|
|
|
|
|
q chan *thunderTask |
|
|
|
|
once sync.Once |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
func (t *Thunder) init() { |
|
|
|
|
if t.QueueSize < 1 { |
|
|
|
|
t.QueueSize = 1 |
|
|
|
|
} |
|
|
|
|
t.q = make(chan *thunderTask, t.QueueSize) |
|
|
|
|
for i := 0; i < t.QueueSize; i++ { |
|
|
|
|
go func() { |
|
|
|
|
for { |
|
|
|
|
task := <-t.q |
|
|
|
|
task.Fetch() |
|
|
|
|
} |
|
|
|
|
}() |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
func (t *Thunder) Fetch(url string, saveFile string) error { |
|
|
|
|
t.once.Do(t.init) |
|
|
|
|
task := &thunderTask{ |
|
|
|
|
Url: url, |
|
|
|
|
SaveFile: saveFile, |
|
|
|
|
} |
|
|
|
|
task.Add(1) |
|
|
|
|
t.q <- task |
|
|
|
|
task.Wait() |
|
|
|
|
return task.err |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
func (t *Thunder) GoFetch(url, saveFile string) chan error { |
|
|
|
|
c := make(chan error) |
|
|
|
|
go func() { |
|
|
|
|
c <- t.Fetch(url, saveFile) |
|
|
|
|
}() |
|
|
|
|
return c |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
// thunder download
|
|
|
|
|
type thunderTask struct { |
|
|
|
|
Url string |
|
|
|
|
SaveFile string |
|
|
|
|
sync.WaitGroup |
|
|
|
|
err error |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
func (this *thunderTask) Fetch() { |
|
|
|
|
this.err = this.fetch() |
|
|
|
|
this.Done() |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
var client = &http.Client{} |
|
|
|
|
|
|
|
|
|
func (this *thunderTask) fetch() error { |
|
|
|
|
log.Debug("avatar.fetch(fetch new avatar): %s", this.Url) |
|
|
|
|
req, _ := http.NewRequest("GET", this.Url, nil) |
|
|
|
|
req.Header.Set("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/jpeg,image/png,*/*;q=0.8") |
|
|
|
|
req.Header.Set("Accept-Encoding", "deflate,sdch") |
|
|
|
|
req.Header.Set("Accept-Language", "zh-CN,zh;q=0.8") |
|
|
|
|
req.Header.Set("Cache-Control", "no-cache") |
|
|
|
|
req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.154 Safari/537.36") |
|
|
|
|
resp, err := client.Do(req) |
|
|
|
|
if err != nil { |
|
|
|
|
return err |
|
|
|
|
} |
|
|
|
|
defer resp.Body.Close() |
|
|
|
|
if resp.StatusCode != 200 { |
|
|
|
|
return fmt.Errorf("status code: %d", resp.StatusCode) |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/* |
|
|
|
|
log.Println("headers:", resp.Header) |
|
|
|
|
switch resp.Header.Get("Content-Type") { |
|
|
|
|
case "image/jpeg": |
|
|
|
|
this.SaveFile += ".jpeg" |
|
|
|
|
case "image/png": |
|
|
|
|
this.SaveFile += ".png" |
|
|
|
|
} |
|
|
|
|
*/ |
|
|
|
|
/* |
|
|
|
|
imgType := resp.Header.Get("Content-Type") |
|
|
|
|
if imgType != "image/jpeg" && imgType != "image/png" { |
|
|
|
|
return errors.New("not png or jpeg") |
|
|
|
|
} |
|
|
|
|
*/ |
|
|
|
|
|
|
|
|
|
tmpFile := this.SaveFile + ".part" // mv to destination when finished
|
|
|
|
|
fd, err := os.Create(tmpFile) |
|
|
|
|
if err != nil { |
|
|
|
|
return err |
|
|
|
|
} |
|
|
|
|
_, err = io.Copy(fd, resp.Body) |
|
|
|
|
fd.Close() |
|
|
|
|
if err != nil { |
|
|
|
|
os.Remove(tmpFile) |
|
|
|
|
return err |
|
|
|
|
} |
|
|
|
|
return os.Rename(tmpFile, this.SaveFile) |
|
|
|
|
// RandomImage generates and returns a random avatar image.
|
|
|
|
|
// The data should normally be the []byte type of email address.
|
|
|
|
|
func RandomImage(data []byte) (image.Image, error) { |
|
|
|
|
return RandomImageSize(_RANDOM_AVATAR_SIZE, data) |
|
|
|
|
} |
|
|
|
|