87 lines
2.4 KiB
Go
87 lines
2.4 KiB
Go
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package routes
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import (
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"database/sql"
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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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"github.com/Azareal/Gosora/common"
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"github.com/Azareal/Gosora/query_gen"
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)
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type AttachmentStmts struct {
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get *sql.Stmt
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}
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var attachmentStmts AttachmentStmts
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// TODO: Abstract this with an attachment store
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func init() {
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common.DbInits.Add(func(acc *qgen.Accumulator) error {
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attachmentStmts = AttachmentStmts{
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get: acc.Select("attachments").Columns("sectionID, sectionTable, originID, originTable, uploadedBy, path").Where("path = ? AND sectionID = ? AND sectionTable = ?").Prepare(),
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}
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return acc.FirstError()
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})
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}
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func ShowAttachment(w http.ResponseWriter, r *http.Request, user common.User, filename string) common.RouteError {
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filename = common.Stripslashes(filename)
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var ext = filepath.Ext("./attachs/" + filename)
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if !common.AllowedFileExts.Contains(strings.TrimPrefix(ext, ".")) {
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return common.LocalError("Bad extension", w, r, user)
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}
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sectionID, err := strconv.Atoi(r.FormValue("sectionID"))
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if err != nil {
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return common.LocalError("The sectionID is not an integer", w, r, user)
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}
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var sectionTable = r.FormValue("sectionType")
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var originTable string
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var originID, uploadedBy int
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err = attachmentStmts.get.QueryRow(filename, sectionID, sectionTable).Scan(§ionID, §ionTable, &originID, &originTable, &uploadedBy, &filename)
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if err == sql.ErrNoRows {
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return common.NotFound(w, r, nil)
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} else if err != nil {
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return common.InternalError(err, w, r)
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}
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if sectionTable == "forums" {
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_, ferr := common.SimpleForumUserCheck(w, r, &user, sectionID)
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if ferr != nil {
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return ferr
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}
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if !user.Perms.ViewTopic {
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return common.NoPermissions(w, r, user)
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}
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} else {
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return common.LocalError("Unknown section", w, r, user)
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}
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if originTable != "topics" && originTable != "replies" {
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return common.LocalError("Unknown origin", w, r, user)
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}
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if !user.Loggedin {
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w.Header().Set("Cache-Control", "max-age="+strconv.Itoa(int(common.Year)))
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} else {
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guest := common.GuestUser
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_, ferr := common.SimpleForumUserCheck(w, r, &guest, sectionID)
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if ferr != nil {
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return ferr
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}
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if guest.Perms.ViewTopic {
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w.Header().Set("Cache-Control", "max-age="+strconv.Itoa(int(common.Year)))
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} else {
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w.Header().Set("Cache-Control", "private")
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}
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}
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// TODO: Fix the problem where non-existent files aren't greeted with custom 404s on ServeFile()'s side
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http.ServeFile(w, r, "./attachs/"+filename)
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return nil
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}
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