/
api.go
189 lines (145 loc) · 3.83 KB
/
api.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
package api
import (
"context"
"io/ioutil"
"os"
"regexp"
"github.com/fernandezvara/certsfor/internal/manager"
"github.com/fernandezvara/certsfor/internal/service"
"github.com/fernandezvara/certsfor/pkg/client"
"github.com/fernandezvara/rest"
"github.com/fernandezvara/scheduler"
)
// API is the struct that manages the api
type API struct {
srv *service.Service
version string
server *rest.REST
logger *rest.Logging
stop chan os.Signal
}
// New returns the API struct
func New(srv *service.Service, version string) *API {
return &API{
srv: srv,
version: version,
}
}
// Start the API
func (a *API) Start(apiPort string, tlsCertificate, tlsKey, tlsCaCert string, remaining int, requireClientCertificate bool, outputPaths, errorOutputPaths []string, debug bool) error {
var (
routes map[string]map[string]rest.APIEndpoint
cert, key, cacert []byte
startScheduler bool
err error
)
routes = map[string]map[string]rest.APIEndpoint{
"GET": {
"/status": {
Handler: a.getStatus,
Matcher: []string{""},
},
"/v1/ca/:caid/certificates/:cn": {
Handler: a.getCertificate,
Matcher: []string{"", "", "", "", "[a-zA-Z0-9.-_]+"},
},
"/v1/ca/:caid/certificates": {
Handler: a.getCertificates,
Matcher: []string{"", "", "", ""},
},
},
"POST": {
"/v1/ca": {
Handler: a.postCA,
Matcher: []string{"", ""},
},
},
"PUT": {
"/v1/ca/:caid/certificates/:cn": {
Handler: a.putCertificate,
Matcher: []string{"", "", "", "", "[a-zA-Z0-9.-_]+"},
},
},
"DELETE": {
"/v1/ca/:caid/certificates/:cn": {
Handler: a.deleteCertificate,
Matcher: []string{"", "", "", "", "[a-zA-Z0-9.-_]+"},
},
},
}
a.logger, err = rest.NewLogging(outputPaths, errorOutputPaths, debug)
if err != nil {
return err
}
// load certificate
cert, key, cacert, startScheduler, err = getCertificates(tlsCertificate, tlsKey, tlsCaCert, remaining, a.srv)
a.server, err = rest.New(apiPort, cert, key, cacert, requireClientCertificate, a.logger)
if err != nil {
return err
}
if startScheduler {
// look if an certificate update must be done daily
fn := func() {
cert, key, _, _, err = getCertificates(tlsCertificate, tlsKey, tlsCaCert, remaining, a.srv)
a.server.SetCertificate(cert, key)
}
scheduler.Every(1).Minutes().NotImmediately().Run(fn)
}
a.server.SetupRouter(routes)
// graceful
err = a.server.Start()
return err
}
// Stop the API
func (a *API) Stop() error {
var err error
a.logger.Info("api", "initializing server shutdown")
// close data service
err = a.srv.Close()
if err != nil {
a.server.Shutdown() // try to close it anyway
return err
}
return a.server.Shutdown()
}
func getCertificates(tlsCertificate, tlsKey, tlsCaCert string, remaining int, srv *service.Service) (cert, key, cacert []byte, startScheduler bool, err error) {
if isUUID(tlsCaCert) {
// get cert from DB
var (
ca *manager.CA
crt client.Certificate
)
if ca, err = srv.CAGet(tlsCaCert); err != nil {
return
}
if crt, err = srv.CertificateGet(context.Background(), tlsCaCert, tlsCertificate, remaining); err != nil {
return
}
cacert = ca.CACertificateBytes()
cert = crt.Certificate
key = crt.Key
startScheduler = true
} else {
// ca certificate is a file?
if cacert, err = fileBytes(tlsCaCert); err != nil {
return
}
if cert, err = fileBytes(tlsCertificate); err != nil {
return
}
if key, err = fileBytes(tlsKey); err != nil {
return
}
}
return
}
func fileBytes(filename string) ([]byte, error) {
if filename == "" {
return []byte{}, nil
}
return ioutil.ReadFile(filename)
}
// cfae8b38-57dd-4322-a83f-bc5730689198
func isUUID(uuid string) bool {
return regexp.MustCompile("^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-4[a-fA-F0-9]{3}-[8|9|aA|bB][a-fA-F0-9]{3}-[a-fA-F0-9]{12}$").MatchString(uuid)
}