/
rotate.go
84 lines (74 loc) · 2.15 KB
/
rotate.go
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package main
import (
"fmt"
"go.mozilla.org/sops/v3"
"go.mozilla.org/sops/v3/audit"
"go.mozilla.org/sops/v3/cmd/sops/codes"
"go.mozilla.org/sops/v3/cmd/sops/common"
"go.mozilla.org/sops/v3/keys"
"go.mozilla.org/sops/v3/keyservice"
)
type rotateOpts struct {
Cipher sops.Cipher
InputStore sops.Store
OutputStore sops.Store
InputPath string
IgnoreMAC bool
AddMasterKeys []keys.MasterKey
RemoveMasterKeys []keys.MasterKey
KeyServices []keyservice.KeyServiceClient
}
func rotate(opts rotateOpts) ([]byte, error) {
tree, err := common.LoadEncryptedFileWithBugFixes(common.GenericDecryptOpts{
Cipher: opts.Cipher,
InputStore: opts.InputStore,
InputPath: opts.InputPath,
IgnoreMAC: opts.IgnoreMAC,
KeyServices: opts.KeyServices,
})
if err != nil {
return nil, err
}
audit.SubmitEvent(audit.RotateEvent{
File: tree.FilePath,
})
_, err = common.DecryptTree(common.DecryptTreeOpts{
Cipher: opts.Cipher, IgnoreMac: opts.IgnoreMAC, Tree: tree,
KeyServices: opts.KeyServices,
})
if err != nil {
return nil, err
}
// Add new master keys
for _, key := range opts.AddMasterKeys {
tree.Metadata.KeyGroups[0] = append(tree.Metadata.KeyGroups[0], key)
}
// Remove master keys
for _, rmKey := range opts.RemoveMasterKeys {
for i := range tree.Metadata.KeyGroups {
for j, groupKey := range tree.Metadata.KeyGroups[i] {
if rmKey.ToString() == groupKey.ToString() {
tree.Metadata.KeyGroups[i] = append(tree.Metadata.KeyGroups[i][:j], tree.Metadata.KeyGroups[i][j+1:]...)
}
}
}
}
// Create a new data key
dataKey, errs := tree.GenerateDataKeyWithKeyServices(opts.KeyServices)
if len(errs) > 0 {
err = fmt.Errorf("Could not generate data key: %s", errs)
return nil, err
}
// Reencrypt the file with the new key
err = common.EncryptTree(common.EncryptTreeOpts{
DataKey: dataKey, Tree: tree, Cipher: opts.Cipher,
})
if err != nil {
return nil, err
}
encryptedFile, err := opts.OutputStore.EmitEncryptedFile(*tree)
if err != nil {
return nil, common.NewExitError(fmt.Sprintf("Could not marshal tree: %s", err), codes.ErrorDumpingTree)
}
return encryptedFile, nil
}