func mailToPdfZip(outfn, inpfn string, splitted bool, outimg string, imgsize string) error {
input, err := openIn(inpfn)
if err != nil {
return err
}
defer func() { _ = input.Close() }()
if !splitted && outimg == "" {
return converter.MailToPdfZip(outfn, input, "message/rfc822", nil)
}
return converter.MailToSplittedPdfZip(outfn, input, "message/rfc822",
splitted, outimg, imgsize, nil)
}
func emailConvertEP(ctx context.Context, request interface{}) (response interface{}, err error) {
req := request.(emailConvertRequest)
defer req.Input.Close()
getOutFn := func(hsh string) string {
return filepath.Join(converter.Workdir,
fmt.Sprintf("result-%s!%s.zip", hsh, req.Params))
}
getCachedFn := func(hsh string) (string, error) {
if strings.Contains(hsh, "/") {
return "", fmt.Errorf("bad hsh: %q", hsh)
}
outFn := getOutFn(hsh)
outFh, err := os.Open(outFn)
if err != nil {
return outFn, err
}
defer outFh.Close()
defer func() {
if err != nil {
logger.Warn("msg", "removing stale result file "+outFn)
_ = os.Remove(outFn)
}
}()
fi, err := outFh.Stat()
if err != nil || fi.Size() == 0 {
return outFn, err
}
// test correctness of the zip file
z, err := zip.OpenReader(outFh.Name())
if err != nil {
return outFn, err
}
_ = z.Close()
return outFn, nil
}
resp := emailConvertResponse{
r: ctx.Value("http.Request").(*http.Request),
}
for _, hsh := range req.IfNoneMatch {
if _, err := getCachedFn(hsh); err == nil {
resp.NotModified = true
return resp, nil
}
}
h := sha1.New()
inpFn, err := readerToFile(io.TeeReader(req.Input, h), req.Input.Filename)
if err != nil {
return resp, fmt.Errorf("cannot read input file: %v", err)
}
if !converter.LeaveTempFiles {
defer os.Remove(inpFn)
}
hsh := base64.URLEncoding.EncodeToString(h.Sum(nil))
if resp.outFn, err = getCachedFn(hsh); err == nil {
return resp, nil
}
input, err := os.Open(inpFn)
if err != nil {
return nil, err
}
if !req.Params.Splitted && req.Params.OutImg == "" {
err = converter.MailToPdfZip(resp.outFn, input, req.Params.ContentType, nil)
} else {
err = converter.MailToSplittedPdfZip(resp.outFn, input, req.Params.ContentType,
req.Params.Splitted, req.Params.OutImg, req.Params.ImgSize, nil)
}
if err != nil {
logger.Error("msg", "MailToSplittedPdfZip", "dest", resp.outFn, "input", input, "params", req.Params, "error", err)
return resp, err
}
return resp, nil
}