120 lines
2.8 KiB
Go
120 lines
2.8 KiB
Go
package main
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import (
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"encoding/json"
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"io/ioutil"
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"net/http"
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"os"
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"path"
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"path/filepath"
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"strconv"
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"strings"
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"time"
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"github.com/dustin/go-humanize"
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"github.com/flosch/pongo2"
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"github.com/microcosm-cc/bluemonday"
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"github.com/russross/blackfriday"
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"github.com/zenazn/goji/web"
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)
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const maxDisplayFileSizeBytes = 1024 * 512
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func fileDisplayHandler(c web.C, w http.ResponseWriter, r *http.Request) {
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fileName := c.URLParams["name"]
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filePath := path.Join(Config.filesDir, fileName)
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err := checkFile(fileName)
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if err == NotFoundErr {
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notFoundHandler(c, w, r)
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return
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}
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metadata, err := metadataRead(fileName)
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if err != nil {
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oopsHandler(c, w, r, RespAUTO, "Corrupt metadata.")
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return
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}
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var expiryHuman string
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if metadata.Expiry != neverExpire {
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expiryHuman = humanize.RelTime(time.Now(), metadata.Expiry, "", "")
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}
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sizeHuman := humanize.Bytes(uint64(metadata.Size))
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extra := make(map[string]string)
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file, _ := os.Open(filePath)
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defer file.Close()
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header := make([]byte, 512)
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file.Read(header)
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extension := strings.TrimPrefix(filepath.Ext(fileName), ".")
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if strings.EqualFold("application/json", r.Header.Get("Accept")) {
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js, _ := json.Marshal(map[string]string{
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"filename": fileName,
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"expiry": strconv.FormatInt(metadata.Expiry.Unix(), 10),
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"size": strconv.FormatInt(metadata.Size, 10),
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"mimetype": metadata.Mimetype,
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"sha256sum": metadata.Sha256sum,
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})
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w.Write(js)
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return
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}
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var tpl *pongo2.Template
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if strings.HasPrefix(metadata.Mimetype, "image/") {
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tpl = Templates["display/image.html"]
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} else if strings.HasPrefix(metadata.Mimetype, "video/") {
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tpl = Templates["display/video.html"]
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} else if strings.HasPrefix(metadata.Mimetype, "audio/") {
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tpl = Templates["display/audio.html"]
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} else if metadata.Mimetype == "application/pdf" {
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tpl = Templates["display/pdf.html"]
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} else if supportedBinExtension(extension) {
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if metadata.Size < maxDisplayFileSizeBytes {
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bytes, err := ioutil.ReadFile(filePath)
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if err == nil {
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extra["extension"] = extension
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extra["lang_hl"], extra["lang_ace"] = extensionToHlAndAceLangs(extension)
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extra["contents"] = string(bytes)
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tpl = Templates["display/bin.html"]
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}
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}
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} else if extension == "md" {
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if metadata.Size < maxDisplayFileSizeBytes {
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bytes, err := ioutil.ReadFile(filePath)
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if err == nil {
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unsafe := blackfriday.MarkdownCommon(bytes)
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html := bluemonday.UGCPolicy().SanitizeBytes(unsafe)
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extra["contents"] = string(html)
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tpl = Templates["display/md.html"]
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}
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}
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}
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// Catch other files
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if tpl == nil {
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tpl = Templates["display/file.html"]
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}
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err = tpl.ExecuteWriter(pongo2.Context{
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"mime": metadata.Mimetype,
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"filename": fileName,
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"size": sizeHuman,
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"expiry": expiryHuman,
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"extra": extra,
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"files": metadata.ArchiveFiles,
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}, w)
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if err != nil {
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oopsHandler(c, w, r, RespHTML, "")
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}
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}
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