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Prevent int overflow when uploading

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This commit is contained in:
Till Faelligen 2021-06-14 01:46:33 +02:00
parent 42ec1fcf09
commit 40c7bfc9ed
1 changed files with 12 additions and 0 deletions
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12
mediaapi/routing/upload.go
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@ -147,6 +147,18 @@ func (r *uploadRequest) doUpload(
// r.storeFileAndMetadata(ctx, tmpDir, ...)
// before you return from doUpload else we will leak a temp file. We could make this nicer with a `WithTransaction` style of
// nested function to guarantee either storage or cleanup.
// should not happen, but prevents any int overflows
if cfg.MaxFileSizeBytes != nil && *cfg.MaxFileSizeBytes+1 <= 0 {
r.Logger.WithFields(log.Fields{
"MaxFileSizeBytes": *cfg.MaxFileSizeBytes + 1,
}).Error("Error while transferring file, configured max_file_size_bytes overflows int64")
return &util.JSONResponse{
Code: http.StatusBadRequest,
JSON: jsonerror.Unknown("Failed to upload"),
}
}
lr := io.LimitReader(reqReader, int64(*cfg.MaxFileSizeBytes)+1)
hash, bytesWritten, tmpDir, err := fileutils.WriteTempFile(ctx, lr, cfg.AbsBasePath)
if err != nil {