132 lines
3.5 KiB
Go
132 lines
3.5 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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"path/filepath"
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"strconv"
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"strings"
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"time"
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"github.com/andreimarcu/linx-server/backends"
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"github.com/andreimarcu/linx-server/expiry"
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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, fileName string, metadata backends.Metadata) {
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var expiryHuman string
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if metadata.Expiry != 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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lines := []string{}
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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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"direct_url": getSiteURL(r) + Config.selifPath + 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 extension == "story" {
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metadata, reader, err := storageBackend.Get(fileName)
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if err != nil {
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oopsHandler(c, w, r, RespHTML, err.Error())
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}
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if metadata.Size < maxDisplayFileSizeBytes {
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bytes, err := ioutil.ReadAll(reader)
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if err == nil {
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extra["contents"] = string(bytes)
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lines = strings.Split(extra["contents"], "\n")
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tpl = Templates["display/story.html"]
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}
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}
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} else if extension == "md" {
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metadata, reader, err := storageBackend.Get(fileName)
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if err != nil {
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oopsHandler(c, w, r, RespHTML, err.Error())
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}
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if metadata.Size < maxDisplayFileSizeBytes {
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bytes, err := ioutil.ReadAll(reader)
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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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} else if strings.HasPrefix(metadata.Mimetype, "text/") || supportedBinExtension(extension) {
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metadata, reader, err := storageBackend.Get(fileName)
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if err != nil {
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oopsHandler(c, w, r, RespHTML, err.Error())
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}
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if metadata.Size < maxDisplayFileSizeBytes {
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bytes, err := ioutil.ReadAll(reader)
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if err == nil {
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extra["extension"] = extension
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extra["lang_hl"] = extensionToHlLang(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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}
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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 := renderTemplate(tpl, 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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"expirylist": listExpirationTimes(),
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"extra": extra,
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"forcerandom": Config.forceRandomFilename,
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"lines": lines,
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"files": metadata.ArchiveFiles,
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"siteurl": strings.TrimSuffix(getSiteURL(r), "/"),
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}, r, 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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