96 lines
3 KiB
Go
96 lines
3 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package pki
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import (
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"fmt"
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"github.com/hashicorp/vault/sdk/framework"
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"github.com/hashicorp/vault/sdk/logical"
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)
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func pathAcmeChallenge(b *backend) []*framework.Path {
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return buildAcmeFrameworkPaths(b, patternAcmeChallenge,
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"/challenge/"+framework.MatchAllRegex("auth_id")+"/"+framework.MatchAllRegex("challenge_type"))
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}
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func addFieldsForACMEChallenge(fields map[string]*framework.FieldSchema) map[string]*framework.FieldSchema {
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fields["auth_id"] = &framework.FieldSchema{
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Type: framework.TypeString,
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Description: "ACME authorization identifier value",
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Required: true,
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}
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fields["challenge_type"] = &framework.FieldSchema{
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Type: framework.TypeString,
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Description: "ACME challenge type",
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Required: true,
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}
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return fields
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}
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func patternAcmeChallenge(b *backend, pattern string) *framework.Path {
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fields := map[string]*framework.FieldSchema{}
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addFieldsForACMEPath(fields, pattern)
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addFieldsForACMERequest(fields)
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addFieldsForACMEChallenge(fields)
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return &framework.Path{
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Pattern: pattern,
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Fields: fields,
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Operations: map[logical.Operation]framework.OperationHandler{
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logical.UpdateOperation: &framework.PathOperation{
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Callback: b.acmeParsedWrapper(b.acmeChallengeHandler),
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ForwardPerformanceSecondary: false,
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ForwardPerformanceStandby: true,
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},
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},
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HelpSynopsis: "",
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HelpDescription: "",
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}
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}
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func (b *backend) acmeChallengeHandler(acmeCtx *acmeContext, r *logical.Request, fields *framework.FieldData, userCtx *jwsCtx, data map[string]interface{}) (*logical.Response, error) {
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authId := fields.Get("auth_id").(string)
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challengeType := fields.Get("challenge_type").(string)
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authz, err := b.acmeState.LoadAuthorization(acmeCtx, userCtx, authId)
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if err != nil {
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return nil, fmt.Errorf("failed to load authorization: %w", err)
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}
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return b.acmeChallengeFetchHandler(acmeCtx, r, fields, userCtx, data, authz, challengeType)
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}
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func (b *backend) acmeChallengeFetchHandler(acmeCtx *acmeContext, r *logical.Request, fields *framework.FieldData, userCtx *jwsCtx, data map[string]interface{}, authz *ACMEAuthorization, challengeType string) (*logical.Response, error) {
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var challenge *ACMEChallenge
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for _, c := range authz.Challenges {
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if string(c.Type) == challengeType {
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challenge = c
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break
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}
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}
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if challenge == nil {
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return nil, fmt.Errorf("unknown challenge of type '%v' in authorization: %w", challengeType, ErrMalformed)
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}
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// Per RFC 8555 Section 7.5.1. Responding to Challenges:
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//
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// > The client indicates to the server that it is ready for the challenge
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// > validation by sending an empty JSON body ("{}") carried in a POST
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// > request to the challenge URL (not the authorization URL).
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if len(data) > 0 {
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return nil, fmt.Errorf("unexpected request parameters: %w", ErrMalformed)
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}
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// XXX: Prompt for challenge to be tried by the server.
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return &logical.Response{
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Data: challenge.NetworkMarshal(acmeCtx, authz.Id),
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}, nil
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}
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