132 lines
3.3 KiB
Go
132 lines
3.3 KiB
Go
package transit
|
|
|
|
import (
|
|
"encoding/base64"
|
|
"fmt"
|
|
"sync"
|
|
|
|
"github.com/hashicorp/vault/helper/certutil"
|
|
"github.com/hashicorp/vault/logical"
|
|
"github.com/hashicorp/vault/logical/framework"
|
|
)
|
|
|
|
func (b *backend) pathEncrypt() *framework.Path {
|
|
return &framework.Path{
|
|
Pattern: "encrypt/" + framework.GenericNameRegex("name"),
|
|
Fields: map[string]*framework.FieldSchema{
|
|
"name": &framework.FieldSchema{
|
|
Type: framework.TypeString,
|
|
Description: "Name of the policy",
|
|
},
|
|
|
|
"plaintext": &framework.FieldSchema{
|
|
Type: framework.TypeString,
|
|
Description: "Plaintext value to encrypt",
|
|
},
|
|
|
|
"context": &framework.FieldSchema{
|
|
Type: framework.TypeString,
|
|
Description: "Context for key derivation. Required for derived keys.",
|
|
},
|
|
},
|
|
|
|
Callbacks: map[logical.Operation]framework.OperationFunc{
|
|
logical.CreateOperation: b.pathEncryptWrite,
|
|
logical.UpdateOperation: b.pathEncryptWrite,
|
|
},
|
|
|
|
ExistenceCheck: b.pathEncryptExistenceCheck,
|
|
|
|
HelpSynopsis: pathEncryptHelpSyn,
|
|
HelpDescription: pathEncryptHelpDesc,
|
|
}
|
|
}
|
|
|
|
func (b *backend) pathEncryptExistenceCheck(
|
|
req *logical.Request, d *framework.FieldData) (bool, error) {
|
|
name := d.Get("name").(string)
|
|
p, lock, err := b.lm.GetPolicyShared(req.Storage, name)
|
|
if lock != nil {
|
|
defer lock.RUnlock()
|
|
}
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
return p != nil, nil
|
|
}
|
|
|
|
func (b *backend) pathEncryptWrite(
|
|
req *logical.Request, d *framework.FieldData) (*logical.Response, error) {
|
|
name := d.Get("name").(string)
|
|
value := d.Get("plaintext").(string)
|
|
if len(value) == 0 {
|
|
return logical.ErrorResponse("missing plaintext to encrypt"), logical.ErrInvalidRequest
|
|
}
|
|
|
|
// Decode the context if any
|
|
contextRaw := d.Get("context").(string)
|
|
var context []byte
|
|
var err error
|
|
if len(contextRaw) != 0 {
|
|
context, err = base64.StdEncoding.DecodeString(contextRaw)
|
|
if err != nil {
|
|
return logical.ErrorResponse("failed to decode context as base64"), logical.ErrInvalidRequest
|
|
}
|
|
}
|
|
|
|
// Get the policy
|
|
var p *Policy
|
|
var lock *sync.RWMutex
|
|
var upserted bool
|
|
if req.Operation == logical.CreateOperation {
|
|
p, lock, upserted, err = b.lm.GetPolicyUpsert(req.Storage, name, len(context) != 0)
|
|
} else {
|
|
p, lock, err = b.lm.GetPolicyShared(req.Storage, name)
|
|
}
|
|
if lock != nil {
|
|
defer lock.RUnlock()
|
|
}
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if p == nil {
|
|
return logical.ErrorResponse("policy not found"), logical.ErrInvalidRequest
|
|
}
|
|
|
|
ciphertext, err := p.Encrypt(context, value)
|
|
if err != nil {
|
|
switch err.(type) {
|
|
case certutil.UserError:
|
|
return logical.ErrorResponse(err.Error()), logical.ErrInvalidRequest
|
|
case certutil.InternalError:
|
|
return nil, err
|
|
default:
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
if ciphertext == "" {
|
|
return nil, fmt.Errorf("empty ciphertext returned")
|
|
}
|
|
|
|
// Generate the response
|
|
resp := &logical.Response{
|
|
Data: map[string]interface{}{
|
|
"ciphertext": ciphertext,
|
|
},
|
|
}
|
|
|
|
if req.Operation == logical.CreateOperation && !upserted {
|
|
resp.AddWarning("Attempted creation of the key during the encrypt operation, but it was created beforehand")
|
|
}
|
|
|
|
return resp, nil
|
|
}
|
|
|
|
const pathEncryptHelpSyn = `Encrypt a plaintext value using a named key`
|
|
|
|
const pathEncryptHelpDesc = `
|
|
This path uses the named key from the request path to encrypt a user
|
|
provided plaintext. The plaintext must be base64 encoded.
|
|
`
|