-
Notifications
You must be signed in to change notification settings - Fork 2
/
web.go
210 lines (192 loc) · 5.99 KB
/
web.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
//-----------------------------------------------------------------------------
// Copyright (c) 2021-present Detlef Stern
//
// This file is part of Zettelstore.
//
// Zettelstore is licensed under the latest version of the EUPL (European Union
// Public License). Please see file LICENSE.txt for your rights and obligations
// under this license.
//
// SPDX-License-Identifier: EUPL-1.2
// SPDX-FileCopyrightText: 2021-present Detlef Stern
//-----------------------------------------------------------------------------
package impl
import (
"errors"
"net"
"net/netip"
"net/url"
"os"
"path/filepath"
"strconv"
"strings"
"sync"
"time"
"zettelstore.de/z/kernel"
"zettelstore.de/z/logger"
"zettelstore.de/z/web/server"
"zettelstore.de/z/web/server/impl"
)
type webService struct {
srvConfig
mxService sync.RWMutex
srvw server.Server
setupServer kernel.SetupWebServerFunc
}
var errURLPrefixSyntax = errors.New("must not be empty and must start with '//'")
func (ws *webService) Initialize(logger *logger.Logger) {
ws.logger = logger
ws.descr = descriptionMap{
kernel.WebAssetDir: {
"Asset file directory",
func(val string) (any, error) {
val = filepath.Clean(val)
if finfo, err := os.Stat(val); err == nil && finfo.IsDir() {
return val, nil
} else {
return nil, err
}
},
true,
},
kernel.WebBaseURL: {
"Base URL",
func(val string) (any, error) {
if _, err := url.Parse(val); err != nil {
return nil, err
}
return val, nil
},
true,
},
kernel.WebListenAddress: {
"Listen address",
func(val string) (any, error) {
// If there is no host, prepend 127.0.0.1 as host.
host, _, err := net.SplitHostPort(val)
if err == nil && host == "" {
val = "127.0.0.1" + val
}
ap, err := netip.ParseAddrPort(val)
if err != nil {
return "", err
}
return ap.String(), nil
},
true},
kernel.WebMaxRequestSize: {"Max Request Size", parseInt64, true},
kernel.WebPersistentCookie: {"Persistent cookie", parseBool, true},
kernel.WebSecureCookie: {"Secure cookie", parseBool, true},
kernel.WebTokenLifetimeAPI: {
"Token lifetime API",
makeDurationParser(10*time.Minute, 0, 1*time.Hour),
true,
},
kernel.WebTokenLifetimeHTML: {
"Token lifetime HTML",
makeDurationParser(1*time.Hour, 1*time.Minute, 30*24*time.Hour),
true,
},
kernel.WebURLPrefix: {
"URL prefix under which the web server runs",
func(val string) (any, error) {
if val != "" && val[0] == '/' && val[len(val)-1] == '/' {
return val, nil
}
return nil, errURLPrefixSyntax
},
true,
},
}
ws.next = interfaceMap{
kernel.WebAssetDir: "",
kernel.WebBaseURL: "http://127.0.0.1:23123/",
kernel.WebListenAddress: "127.0.0.1:23123",
kernel.WebMaxRequestSize: int64(16 * 1024 * 1024),
kernel.WebPersistentCookie: false,
kernel.WebSecureCookie: true,
kernel.WebTokenLifetimeAPI: 1 * time.Hour,
kernel.WebTokenLifetimeHTML: 10 * time.Minute,
kernel.WebURLPrefix: "/",
}
}
func makeDurationParser(defDur, minDur, maxDur time.Duration) parseFunc {
return func(val string) (any, error) {
if d, err := strconv.ParseUint(val, 10, 64); err == nil {
secs := time.Duration(d) * time.Minute
if secs < minDur {
return minDur, nil
}
if secs > maxDur {
return maxDur, nil
}
return secs, nil
}
return defDur, nil
}
}
var errWrongBasePrefix = errors.New(kernel.WebURLPrefix + " does not match " + kernel.WebBaseURL)
func (ws *webService) GetLogger() *logger.Logger { return ws.logger }
func (ws *webService) Start(kern *myKernel) error {
baseURL := ws.GetNextConfig(kernel.WebBaseURL).(string)
listenAddr := ws.GetNextConfig(kernel.WebListenAddress).(string)
urlPrefix := ws.GetNextConfig(kernel.WebURLPrefix).(string)
persistentCookie := ws.GetNextConfig(kernel.WebPersistentCookie).(bool)
secureCookie := ws.GetNextConfig(kernel.WebSecureCookie).(bool)
maxRequestSize := ws.GetNextConfig(kernel.WebMaxRequestSize).(int64)
if maxRequestSize < 1024 {
maxRequestSize = 1024
}
if !strings.HasSuffix(baseURL, urlPrefix) {
ws.logger.Error().Str("base-url", baseURL).Str("url-prefix", urlPrefix).Msg(
"url-prefix is not a suffix of base-url")
return errWrongBasePrefix
}
if lap := netip.MustParseAddrPort(listenAddr); !kern.auth.manager.WithAuth() && !lap.Addr().IsLoopback() {
ws.logger.Info().Str("listen", listenAddr).Msg("service may be reached from outside, but authentication is not enabled")
}
srvw := impl.New(ws.logger, listenAddr, baseURL, urlPrefix, persistentCookie, secureCookie, maxRequestSize, kern.auth.manager)
err := kern.web.setupServer(srvw, kern.box.manager, kern.auth.manager, &kern.cfg)
if err != nil {
ws.logger.Error().Err(err).Msg("Unable to create")
return err
}
if kern.core.GetNextConfig(kernel.CoreDebug).(bool) {
srvw.SetDebug()
}
if err = srvw.Run(); err != nil {
ws.logger.Error().Err(err).Msg("Unable to start")
return err
}
ws.logger.Info().Str("listen", listenAddr).Str("base-url", baseURL).Msg("Start Service")
ws.mxService.Lock()
ws.srvw = srvw
ws.mxService.Unlock()
if kern.cfg.GetCurConfig(kernel.ConfigSimpleMode).(bool) {
listenAddr := ws.GetNextConfig(kernel.WebListenAddress).(string)
if idx := strings.LastIndexByte(listenAddr, ':'); idx >= 0 {
ws.logger.Mandatory().Msg(strings.Repeat("--------------------", 3))
ws.logger.Mandatory().Msg("Open your browser and enter the following URL:")
ws.logger.Mandatory().Msg(" http://localhost" + listenAddr[idx:])
ws.logger.Mandatory().Msg("")
ws.logger.Mandatory().Msg("If this does not work, try:")
ws.logger.Mandatory().Msg(" http://127.0.0.1" + listenAddr[idx:])
}
}
return nil
}
func (ws *webService) IsStarted() bool {
ws.mxService.RLock()
defer ws.mxService.RUnlock()
return ws.srvw != nil
}
func (ws *webService) Stop(*myKernel) {
ws.logger.Info().Msg("Stop Service")
ws.srvw.Stop()
ws.mxService.Lock()
ws.srvw = nil
ws.mxService.Unlock()
}
func (*webService) GetStatistics() []kernel.KeyValue {
return nil
}