aad75e6720
--one-way argument will check that all files on source matches the files on detination, but not the other way. For example files present on destination but not on source will not trigger an error. Fixes: #1526
115 lines
3.5 KiB
Go
115 lines
3.5 KiB
Go
package cryptcheck
|
|
|
|
import (
|
|
"github.com/ncw/rclone/backend/crypt"
|
|
"github.com/ncw/rclone/cmd"
|
|
"github.com/ncw/rclone/fs"
|
|
"github.com/ncw/rclone/fs/hash"
|
|
"github.com/ncw/rclone/fs/operations"
|
|
"github.com/pkg/errors"
|
|
"github.com/spf13/cobra"
|
|
)
|
|
|
|
// Globals
|
|
var (
|
|
oneway = false
|
|
)
|
|
|
|
func init() {
|
|
cmd.Root.AddCommand(commandDefintion)
|
|
commandDefintion.Flags().BoolVarP(&oneway, "one-way", "", oneway, "Check one way only, source files must exist on destination")
|
|
}
|
|
|
|
var commandDefintion = &cobra.Command{
|
|
Use: "cryptcheck remote:path cryptedremote:path",
|
|
Short: `Cryptcheck checks the integrity of a crypted remote.`,
|
|
Long: `
|
|
rclone cryptcheck checks a remote against a crypted remote. This is
|
|
the equivalent of running rclone check, but able to check the
|
|
checksums of the crypted remote.
|
|
|
|
For it to work the underlying remote of the cryptedremote must support
|
|
some kind of checksum.
|
|
|
|
It works by reading the nonce from each file on the cryptedremote: and
|
|
using that to encrypt each file on the remote:. It then checks the
|
|
checksum of the underlying file on the cryptedremote: against the
|
|
checksum of the file it has just encrypted.
|
|
|
|
Use it like this
|
|
|
|
rclone cryptcheck /path/to/files encryptedremote:path
|
|
|
|
You can use it like this also, but that will involve downloading all
|
|
the files in remote:path.
|
|
|
|
rclone cryptcheck remote:path encryptedremote:path
|
|
|
|
After it has run it will log the status of the encryptedremote:.
|
|
|
|
If you supply the --one-way flag, it will only check that files in source
|
|
match the files in destination, not the other way around. Meaning extra files in
|
|
destination that are not in the source will not trigger an error.
|
|
`,
|
|
Run: func(command *cobra.Command, args []string) {
|
|
cmd.CheckArgs(2, 2, command, args)
|
|
fsrc, fdst := cmd.NewFsSrcDst(args)
|
|
cmd.Run(false, true, command, func() error {
|
|
return cryptCheck(fdst, fsrc)
|
|
})
|
|
},
|
|
}
|
|
|
|
// cryptCheck checks the integrity of a crypted remote
|
|
func cryptCheck(fdst, fsrc fs.Fs) error {
|
|
// Check to see fcrypt is a crypt
|
|
fcrypt, ok := fdst.(*crypt.Fs)
|
|
if !ok {
|
|
return errors.Errorf("%s:%s is not a crypt remote", fdst.Name(), fdst.Root())
|
|
}
|
|
// Find a hash to use
|
|
funderlying := fcrypt.UnWrap()
|
|
hashType := funderlying.Hashes().GetOne()
|
|
if hashType == hash.None {
|
|
return errors.Errorf("%s:%s does not support any hashes", funderlying.Name(), funderlying.Root())
|
|
}
|
|
fs.Infof(nil, "Using %v for hash comparisons", hashType)
|
|
|
|
// checkIdentical checks to see if dst and src are identical
|
|
//
|
|
// it returns true if differences were found
|
|
// it also returns whether it couldn't be hashed
|
|
checkIdentical := func(dst, src fs.Object) (differ bool, noHash bool) {
|
|
cryptDst := dst.(*crypt.Object)
|
|
underlyingDst := cryptDst.UnWrap()
|
|
underlyingHash, err := underlyingDst.Hash(hashType)
|
|
if err != nil {
|
|
fs.CountError(err)
|
|
fs.Errorf(dst, "Error reading hash from underlying %v: %v", underlyingDst, err)
|
|
return true, false
|
|
}
|
|
if underlyingHash == "" {
|
|
return false, true
|
|
}
|
|
cryptHash, err := fcrypt.ComputeHash(cryptDst, src, hashType)
|
|
if err != nil {
|
|
fs.CountError(err)
|
|
fs.Errorf(dst, "Error computing hash: %v", err)
|
|
return true, false
|
|
}
|
|
if cryptHash == "" {
|
|
return false, true
|
|
}
|
|
if cryptHash != underlyingHash {
|
|
err = errors.Errorf("hashes differ (%s:%s) %q vs (%s:%s) %q", fdst.Name(), fdst.Root(), cryptHash, fsrc.Name(), fsrc.Root(), underlyingHash)
|
|
fs.CountError(err)
|
|
fs.Errorf(src, err.Error())
|
|
return true, false
|
|
}
|
|
fs.Debugf(src, "OK")
|
|
return false, false
|
|
}
|
|
|
|
return operations.CheckFn(fcrypt, fsrc, checkIdentical, oneway)
|
|
}
|