mirror of
https://github.com/optim-enterprises-bv/vault.git
synced 2025-11-01 19:17:58 +00:00
136 lines
3.4 KiB
Go
136 lines
3.4 KiB
Go
package transit
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import (
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"encoding/base64"
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"fmt"
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"github.com/hashicorp/vault/helper/certutil"
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"github.com/hashicorp/vault/logical"
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"github.com/hashicorp/vault/logical/framework"
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)
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func (b *backend) pathEncrypt() *framework.Path {
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return &framework.Path{
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Pattern: "encrypt/" + framework.GenericNameRegex("name"),
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Fields: map[string]*framework.FieldSchema{
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"name": &framework.FieldSchema{
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Type: framework.TypeString,
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Description: "Name of the policy",
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},
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"plaintext": &framework.FieldSchema{
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Type: framework.TypeString,
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Description: "Plaintext value to encrypt",
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},
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"context": &framework.FieldSchema{
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Type: framework.TypeString,
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Description: "Context for key derivation. Required for derived keys.",
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},
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},
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Callbacks: map[logical.Operation]framework.OperationFunc{
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logical.CreateOperation: b.pathEncryptWrite,
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logical.UpdateOperation: b.pathEncryptWrite,
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},
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ExistenceCheck: b.pathEncryptExistenceCheck,
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HelpSynopsis: pathEncryptHelpSyn,
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HelpDescription: pathEncryptHelpDesc,
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}
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}
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func (b *backend) pathEncryptExistenceCheck(
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req *logical.Request, d *framework.FieldData) (bool, error) {
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name := d.Get("name").(string)
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lp, err := b.policies.getPolicy(req, name)
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if err != nil {
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return false, err
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}
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return lp != nil, nil
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}
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func (b *backend) pathEncryptWrite(
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req *logical.Request, d *framework.FieldData) (*logical.Response, error) {
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name := d.Get("name").(string)
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value := d.Get("plaintext").(string)
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if len(value) == 0 {
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return logical.ErrorResponse("missing plaintext to encrypt"), logical.ErrInvalidRequest
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}
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// Decode the context if any
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contextRaw := d.Get("context").(string)
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var context []byte
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if len(contextRaw) != 0 {
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var err error
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context, err = base64.StdEncoding.DecodeString(contextRaw)
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if err != nil {
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return logical.ErrorResponse("failed to decode context as base64"), logical.ErrInvalidRequest
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}
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}
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// Get the policy
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lp, err := b.policies.getPolicy(req, name)
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if err != nil {
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return nil, err
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}
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// Error if invalid policy
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if lp == nil {
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if req.Operation != logical.CreateOperation {
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return logical.ErrorResponse("policy not found"), logical.ErrInvalidRequest
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}
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isDerived := len(context) != 0
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lp, err = b.policies.generatePolicy(req.Storage, name, isDerived)
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// If the error is that the policy has been created in the interim we
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// will get the policy back, so only consider it an error if err is not
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// nil and we do not get a policy back
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if err != nil && lp != nil {
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return nil, err
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}
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}
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lp.RLock()
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defer lp.RUnlock()
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// Verify if wasn't deleted before we grabbed the lock
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if lp.policy == nil {
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return nil, fmt.Errorf("no existing policy named %s could be found", name)
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}
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ciphertext, err := lp.policy.Encrypt(context, value)
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if err != nil {
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switch err.(type) {
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case certutil.UserError:
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return logical.ErrorResponse(err.Error()), logical.ErrInvalidRequest
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case certutil.InternalError:
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return nil, err
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default:
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return nil, err
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}
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}
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if ciphertext == "" {
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return nil, fmt.Errorf("empty ciphertext returned")
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}
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// Generate the response
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resp := &logical.Response{
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Data: map[string]interface{}{
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"ciphertext": ciphertext,
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},
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}
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return resp, nil
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}
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const pathEncryptHelpSyn = `Encrypt a plaintext value using a named key`
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const pathEncryptHelpDesc = `
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This path uses the named key from the request path to encrypt a user
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provided plaintext. The plaintext must be base64 encoded.
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`
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