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|
package api
import (
"bytes"
"fmt"
"io"
"os"
"github.com/hashicorp/errwrap"
"github.com/hashicorp/vault/helper/jsonutil"
)
const (
wrappedResponseLocation = "cubbyhole/response"
)
var (
// The default TTL that will be used with `sys/wrapping/wrap`, can be
// changed
DefaultWrappingTTL = "5m"
// The default function used if no other function is set, which honors the
// env var and wraps `sys/wrapping/wrap`
DefaultWrappingLookupFunc = func(operation, path string) string {
if os.Getenv(EnvVaultWrapTTL) != "" {
return os.Getenv(EnvVaultWrapTTL)
}
if (operation == "PUT" || operation == "POST") && path == "sys/wrapping/wrap" {
return DefaultWrappingTTL
}
return ""
}
)
// Logical is used to perform logical backend operations on Vault.
type Logical struct {
c *Client
}
// Logical is used to return the client for logical-backend API calls.
func (c *Client) Logical() *Logical {
return &Logical{c: c}
}
func (c *Logical) Read(path string) (*Secret, error) {
r := c.c.NewRequest("GET", "/v1/"+path)
resp, err := c.c.RawRequest(r)
if resp != nil {
defer resp.Body.Close()
}
if resp != nil && resp.StatusCode == 404 {
secret, parseErr := ParseSecret(resp.Body)
switch parseErr {
case nil:
case io.EOF:
return nil, nil
default:
return nil, err
}
if secret != nil && (len(secret.Warnings) > 0 || len(secret.Data) > 0) {
return secret, nil
}
return nil, nil
}
if err != nil {
return nil, err
}
return ParseSecret(resp.Body)
}
func (c *Logical) List(path string) (*Secret, error) {
r := c.c.NewRequest("LIST", "/v1/"+path)
// Set this for broader compatibility, but we use LIST above to be able to
// handle the wrapping lookup function
r.Method = "GET"
r.Params.Set("list", "true")
resp, err := c.c.RawRequest(r)
if resp != nil {
defer resp.Body.Close()
}
if resp != nil && resp.StatusCode == 404 {
secret, parseErr := ParseSecret(resp.Body)
switch parseErr {
case nil:
case io.EOF:
return nil, nil
default:
return nil, err
}
if secret != nil && (len(secret.Warnings) > 0 || len(secret.Data) > 0) {
return secret, nil
}
return nil, nil
}
if err != nil {
return nil, err
}
return ParseSecret(resp.Body)
}
func (c *Logical) Write(path string, data map[string]interface{}) (*Secret, error) {
r := c.c.NewRequest("PUT", "/v1/"+path)
if err := r.SetJSONBody(data); err != nil {
return nil, err
}
resp, err := c.c.RawRequest(r)
if resp != nil {
defer resp.Body.Close()
}
if resp != nil && resp.StatusCode == 404 {
secret, parseErr := ParseSecret(resp.Body)
switch parseErr {
case nil:
case io.EOF:
return nil, nil
default:
return nil, err
}
if secret != nil && (len(secret.Warnings) > 0 || len(secret.Data) > 0) {
return secret, err
}
}
if err != nil {
return nil, err
}
if resp.StatusCode == 200 {
return ParseSecret(resp.Body)
}
return nil, nil
}
func (c *Logical) Delete(path string) (*Secret, error) {
r := c.c.NewRequest("DELETE", "/v1/"+path)
resp, err := c.c.RawRequest(r)
if resp != nil {
defer resp.Body.Close()
}
if resp != nil && resp.StatusCode == 404 {
secret, parseErr := ParseSecret(resp.Body)
switch parseErr {
case nil:
case io.EOF:
return nil, nil
default:
return nil, err
}
if secret != nil && (len(secret.Warnings) > 0 || len(secret.Data) > 0) {
return secret, err
}
}
if err != nil {
return nil, err
}
if resp.StatusCode == 200 {
return ParseSecret(resp.Body)
}
return nil, nil
}
func (c *Logical) Unwrap(wrappingToken string) (*Secret, error) {
var data map[string]interface{}
if wrappingToken != "" {
if c.c.Token() == "" {
c.c.SetToken(wrappingToken)
} else if wrappingToken != c.c.Token() {
data = map[string]interface{}{
"token": wrappingToken,
}
}
}
r := c.c.NewRequest("PUT", "/v1/sys/wrapping/unwrap")
if err := r.SetJSONBody(data); err != nil {
return nil, err
}
resp, err := c.c.RawRequest(r)
if resp != nil {
defer resp.Body.Close()
}
if resp == nil || resp.StatusCode != 404 {
if err != nil {
return nil, err
}
if resp == nil {
return nil, nil
}
return ParseSecret(resp.Body)
}
// In the 404 case this may actually be a wrapped 404 error
secret, parseErr := ParseSecret(resp.Body)
switch parseErr {
case nil:
case io.EOF:
return nil, nil
default:
return nil, err
}
if secret != nil && (len(secret.Warnings) > 0 || len(secret.Data) > 0) {
return secret, nil
}
// Otherwise this might be an old-style wrapping token so attempt the old
// method
if wrappingToken != "" {
origToken := c.c.Token()
defer c.c.SetToken(origToken)
c.c.SetToken(wrappingToken)
}
secret, err = c.Read(wrappedResponseLocation)
if err != nil {
return nil, errwrap.Wrapf(fmt.Sprintf("error reading %q: {{err}}", wrappedResponseLocation), err)
}
if secret == nil {
return nil, fmt.Errorf("no value found at %q", wrappedResponseLocation)
}
if secret.Data == nil {
return nil, fmt.Errorf("\"data\" not found in wrapping response")
}
if _, ok := secret.Data["response"]; !ok {
return nil, fmt.Errorf("\"response\" not found in wrapping response \"data\" map")
}
wrappedSecret := new(Secret)
buf := bytes.NewBufferString(secret.Data["response"].(string))
if err := jsonutil.DecodeJSONFromReader(buf, wrappedSecret); err != nil {
return nil, errwrap.Wrapf("error unmarshalling wrapped secret: {{err}}", err)
}
return wrappedSecret, nil
}
|
