-
Notifications
You must be signed in to change notification settings - Fork 432
/
order.go
297 lines (269 loc) · 7.96 KB
/
order.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
package api
import (
"context"
"crypto/x509"
"encoding/base64"
"encoding/json"
"net"
"net/http"
"strings"
"time"
"github.com/go-chi/chi"
"github.com/smallstep/certificates/acme"
"github.com/smallstep/certificates/api"
"go.step.sm/crypto/randutil"
)
// NewOrderRequest represents the body for a NewOrder request.
type NewOrderRequest struct {
Identifiers []acme.Identifier `json:"identifiers"`
NotBefore time.Time `json:"notBefore,omitempty"`
NotAfter time.Time `json:"notAfter,omitempty"`
}
// Validate validates a new-order request body.
func (n *NewOrderRequest) Validate() error {
if len(n.Identifiers) == 0 {
return acme.NewError(acme.ErrorMalformedType, "identifiers list cannot be empty")
}
for _, id := range n.Identifiers {
if !(id.Type == acme.DNS || id.Type == acme.IP) {
return acme.NewError(acme.ErrorMalformedType, "identifier type unsupported: %s", id.Type)
}
if id.Type == acme.IP && net.ParseIP(id.Value) == nil {
return acme.NewError(acme.ErrorMalformedType, "invalid IP address: %s", id.Value)
}
}
return nil
}
// FinalizeRequest captures the body for a Finalize order request.
type FinalizeRequest struct {
CSR string `json:"csr"`
csr *x509.CertificateRequest
}
// Validate validates a finalize request body.
func (f *FinalizeRequest) Validate() error {
var err error
csrBytes, err := base64.RawURLEncoding.DecodeString(f.CSR)
if err != nil {
return acme.WrapError(acme.ErrorMalformedType, err, "error base64url decoding csr")
}
f.csr, err = x509.ParseCertificateRequest(csrBytes)
if err != nil {
return acme.WrapError(acme.ErrorMalformedType, err, "unable to parse csr")
}
if err = f.csr.CheckSignature(); err != nil {
return acme.WrapError(acme.ErrorMalformedType, err, "csr failed signature check")
}
return nil
}
var defaultOrderExpiry = time.Hour * 24
var defaultOrderBackdate = time.Minute
// NewOrder ACME api for creating a new order.
func (h *Handler) NewOrder(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
acc, err := accountFromContext(ctx)
if err != nil {
api.WriteError(w, err)
return
}
prov, err := provisionerFromContext(ctx)
if err != nil {
api.WriteError(w, err)
return
}
payload, err := payloadFromContext(ctx)
if err != nil {
api.WriteError(w, err)
return
}
var nor NewOrderRequest
if err := json.Unmarshal(payload.value, &nor); err != nil {
api.WriteError(w, acme.WrapError(acme.ErrorMalformedType, err,
"failed to unmarshal new-order request payload"))
return
}
if err := nor.Validate(); err != nil {
api.WriteError(w, err)
return
}
now := clock.Now()
// New order.
o := &acme.Order{
AccountID: acc.ID,
ProvisionerID: prov.GetID(),
Status: acme.StatusPending,
Identifiers: nor.Identifiers,
ExpiresAt: now.Add(defaultOrderExpiry),
AuthorizationIDs: make([]string, len(nor.Identifiers)),
NotBefore: nor.NotBefore,
NotAfter: nor.NotAfter,
}
for i, identifier := range o.Identifiers {
az := &acme.Authorization{
AccountID: acc.ID,
Identifier: identifier,
ExpiresAt: o.ExpiresAt,
Status: acme.StatusPending,
}
if err := h.newAuthorization(ctx, az); err != nil {
api.WriteError(w, err)
return
}
o.AuthorizationIDs[i] = az.ID
}
if o.NotBefore.IsZero() {
o.NotBefore = now
}
if o.NotAfter.IsZero() {
o.NotAfter = o.NotBefore.Add(prov.DefaultTLSCertDuration())
}
// If request NotBefore was empty then backdate the order.NotBefore (now)
// to avoid timing issues.
if nor.NotBefore.IsZero() {
o.NotBefore = o.NotBefore.Add(-defaultOrderBackdate)
}
if err := h.db.CreateOrder(ctx, o); err != nil {
api.WriteError(w, acme.WrapErrorISE(err, "error creating order"))
return
}
h.linker.LinkOrder(ctx, o)
w.Header().Set("Location", h.linker.GetLink(ctx, OrderLinkType, o.ID))
api.JSONStatus(w, o, http.StatusCreated)
}
func (h *Handler) newAuthorization(ctx context.Context, az *acme.Authorization) error {
if strings.HasPrefix(az.Identifier.Value, "*.") {
az.Wildcard = true
az.Identifier = acme.Identifier{
Value: strings.TrimPrefix(az.Identifier.Value, "*."),
Type: az.Identifier.Type,
}
}
chTypes := challengeTypes(az)
var err error
az.Token, err = randutil.Alphanumeric(32)
if err != nil {
return acme.WrapErrorISE(err, "error generating random alphanumeric ID")
}
az.Challenges = make([]*acme.Challenge, len(chTypes))
for i, typ := range chTypes {
ch := &acme.Challenge{
AccountID: az.AccountID,
Value: az.Identifier.Value,
Type: typ,
Token: az.Token,
Status: acme.StatusPending,
}
if err := h.db.CreateChallenge(ctx, ch); err != nil {
return acme.WrapErrorISE(err, "error creating challenge")
}
az.Challenges[i] = ch
}
if err = h.db.CreateAuthorization(ctx, az); err != nil {
return acme.WrapErrorISE(err, "error creating authorization")
}
return nil
}
// GetOrder ACME api for retrieving an order.
func (h *Handler) GetOrder(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
acc, err := accountFromContext(ctx)
if err != nil {
api.WriteError(w, err)
return
}
prov, err := provisionerFromContext(ctx)
if err != nil {
api.WriteError(w, err)
return
}
o, err := h.db.GetOrder(ctx, chi.URLParam(r, "ordID"))
if err != nil {
api.WriteError(w, acme.WrapErrorISE(err, "error retrieving order"))
return
}
if acc.ID != o.AccountID {
api.WriteError(w, acme.NewError(acme.ErrorUnauthorizedType,
"account '%s' does not own order '%s'", acc.ID, o.ID))
return
}
if prov.GetID() != o.ProvisionerID {
api.WriteError(w, acme.NewError(acme.ErrorUnauthorizedType,
"provisioner '%s' does not own order '%s'", prov.GetID(), o.ID))
return
}
if err = o.UpdateStatus(ctx, h.db); err != nil {
api.WriteError(w, acme.WrapErrorISE(err, "error updating order status"))
return
}
h.linker.LinkOrder(ctx, o)
w.Header().Set("Location", h.linker.GetLink(ctx, OrderLinkType, o.ID))
api.JSON(w, o)
}
// FinalizeOrder attemptst to finalize an order and create a certificate.
func (h *Handler) FinalizeOrder(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
acc, err := accountFromContext(ctx)
if err != nil {
api.WriteError(w, err)
return
}
prov, err := provisionerFromContext(ctx)
if err != nil {
api.WriteError(w, err)
return
}
payload, err := payloadFromContext(ctx)
if err != nil {
api.WriteError(w, err)
return
}
var fr FinalizeRequest
if err := json.Unmarshal(payload.value, &fr); err != nil {
api.WriteError(w, acme.WrapError(acme.ErrorMalformedType, err,
"failed to unmarshal finalize-order request payload"))
return
}
if err := fr.Validate(); err != nil {
api.WriteError(w, err)
return
}
o, err := h.db.GetOrder(ctx, chi.URLParam(r, "ordID"))
if err != nil {
api.WriteError(w, acme.WrapErrorISE(err, "error retrieving order"))
return
}
if acc.ID != o.AccountID {
api.WriteError(w, acme.NewError(acme.ErrorUnauthorizedType,
"account '%s' does not own order '%s'", acc.ID, o.ID))
return
}
if prov.GetID() != o.ProvisionerID {
api.WriteError(w, acme.NewError(acme.ErrorUnauthorizedType,
"provisioner '%s' does not own order '%s'", prov.GetID(), o.ID))
return
}
if err = o.Finalize(ctx, h.db, fr.csr, h.ca, prov); err != nil {
api.WriteError(w, acme.WrapErrorISE(err, "error finalizing order"))
return
}
h.linker.LinkOrder(ctx, o)
w.Header().Set("Location", h.linker.GetLink(ctx, OrderLinkType, o.ID))
api.JSON(w, o)
}
// challengeTypes determines the types of challenges that should be used
// for the ACME authorization request.
func challengeTypes(az *acme.Authorization) []acme.ChallengeType {
var chTypes []acme.ChallengeType
switch az.Identifier.Type {
case acme.IP:
chTypes = []acme.ChallengeType{acme.HTTP01, acme.TLSALPN01}
case acme.DNS:
chTypes = []acme.ChallengeType{acme.DNS01}
// HTTP and TLS challenges can only be used for identifiers without wildcards.
if !az.Wildcard {
chTypes = append(chTypes, []acme.ChallengeType{acme.HTTP01, acme.TLSALPN01}...)
}
default:
chTypes = []acme.ChallengeType{}
}
return chTypes
}