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Code Issues Releases Wiki Activity

Remove static target for decrypt util

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Signed-off-by: Knut Ahlers <knut@ahlers.me>
This commit is contained in:
Knut Ahlers 2019-11-05 17:31:28 +01:00
parent b8d84dba6a
commit 2812974bc6
Signed by: luzifer
GPG key ID: DC2729FDD34BE99E
1 changed files with 45 additions and 8 deletions
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45
cmd/sii-decrypt/main.go
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@ -8,12 +8,15 @@ import (
"github.com/Luzifer/rconfig/v2"
"github.com/Luzifer/sii"
"github.com/pkg/errors"
log "github.com/sirupsen/logrus"
)
var (
cfg = struct {
Backup bool `flag:"backup,b" default:"true" description:"Bakcup encrypted file when in-place mode is used"`
DecryptKey string `flag:"decrypt-key" default:"" description:"Hex formated decryption key" validate:"nonzero"`
InPlace bool `flag:"in-place,i" default:"false" description:"Write the decrypted version to the same file the encrypted version was read from"`
LogLevel string `flag:"log-level" default:"info" description:"Log level (debug, info, warn, error, fatal)"`
VersionAndExit bool `flag:"version" default:"false" description:"Prints current version and exits"`
}{}
@ -51,12 +54,14 @@ func main() {
log.Fatal("Expecting exactly one SII file as an argument")
}
stat, err := os.Stat(rconfig.Args()[1])
var filename = rconfig.Args()[1]
stat, err := os.Stat(filename)
if err != nil {
log.WithError(err).Fatal("Unable to read info of save-file")
}
f, err := os.Open(rconfig.Args()[1])
f, err := os.Open(filename)
if err != nil {
log.WithError(err).Fatal("Unable to open encrypted file")
}
@ -69,13 +74,45 @@ func main() {
log.WithError(err).Fatal("Unable to decrypt file")
}
tf, err := os.Create("/tmp/output")
var output io.Writer = os.Stdout
if cfg.InPlace {
if cfg.Backup {
if err := copyFile(filename, filename+".bak"); err != nil {
log.WithError(err).Fatal("Unable to create file backup")
}
}
// Close input file right now as we need to re-create it
f.Close()
tf, err := os.Create(filename)
if err != nil {
log.WithError(err).Fatal("Unable to create output file")
}
defer tf.Close()
if _, err := io.Copy(tf, contentReader); err != nil {
output = tf
}
if _, err := io.Copy(output, contentReader); err != nil {
log.WithError(err).Fatal("Unable to copy content")
}
}
func copyFile(src, dst string) error {
s, err := os.Open(src)
if err != nil {
return errors.Wrap(err, "Unable to open source file")
}
defer s.Close()
d, err := os.Create(dst)
if err != nil {
return errors.Wrap(err, "Unable to open dest file")
}
defer d.Close()
_, err = io.Copy(d, s)
return err
}