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
|
package server
import (
"context"
"fmt"
"net"
"net/http"
"net/url"
"slices"
"time"
"website/internal/builder"
cfg "website/internal/config"
"website/internal/log"
"website/internal/website"
"github.com/osdevisnot/sorvor/pkg/livereload"
"github.com/pkg/errors"
"golang.org/x/net/http2"
"golang.org/x/net/http2/h2c"
)
var (
CommitSHA = "local"
ShortSHA = "local"
serverHeader = fmt.Sprintf("website (%s)", ShortSHA)
)
type Config struct {
Development bool `conf:"default:false,flag:dev"`
Root string `conf:"default:website"`
Redirect bool `conf:"default:false"`
ListenAddress string `conf:"default:localhost"`
Port string `conf:"default:3000,short:p"`
TLS bool `conf:"default:false"`
}
type Server struct {
*http.Server
config *cfg.Config
tls bool
}
func applyDevModeOverrides(config *cfg.Config, listenAddress string) {
config.CSP.ScriptSrc = slices.Insert(config.CSP.ScriptSrc, 0, "'unsafe-inline'")
config.CSP.ConnectSrc = slices.Insert(config.CSP.ConnectSrc, 0, "'self'")
config.BaseURL = cfg.URL{
URL: &url.URL{
Scheme: "http",
Host: listenAddress,
},
}
}
func updateCSPHashes(config *cfg.Config, r *builder.Result) {
clear(config.CSP.StyleSrc)
for i, h := range r.Hashes {
config.CSP.StyleSrc[i] = fmt.Sprintf("'%s'", h)
}
}
func serverHeaderHandler(wrappedHandler http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.ProtoMajor >= 2 && r.Header.Get("Host") != "" {
// net/http does this for HTTP/1.1, but not h2c
// TODO: check with HTTP/2.0 (i.e. with TLS)
r.Host = r.Header.Get("Host")
r.Header.Del("Host")
}
w.Header().Set("Server", serverHeader)
wrappedHandler.ServeHTTP(w, r)
})
}
func New(runtimeConfig *Config) (*Server, error) {
var err error
config, err := cfg.GetConfig()
if err != nil {
return nil, errors.WithMessage(err, "error parsing configuration file")
}
listenAddress := net.JoinHostPort(runtimeConfig.ListenAddress, runtimeConfig.Port)
top := http.NewServeMux()
if runtimeConfig.Development {
applyDevModeOverrides(config, listenAddress)
builderConfig := builder.IOConfig{
Source: "content",
Destination: runtimeConfig.Root,
BaseURL: config.BaseURL,
Development: true,
}
r, err := builder.BuildSite(builderConfig)
if err != nil {
return nil, errors.WithMessage(err, "could not build site")
}
updateCSPHashes(config, r)
liveReload := livereload.New()
top.Handle("/_/reload", liveReload)
liveReload.Start()
fw, err := NewFileWatcher()
if err != nil {
return nil, errors.WithMessage(err, "could not create file watcher")
}
for _, dir := range []string{"content", "static", "templates", "internal/builder"} {
err := fw.AddRecursive(dir)
if err != nil {
return nil, errors.WithMessagef(
err,
"could not add directory %s to file watcher",
dir,
)
}
}
err = fw.Add(".")
if err != nil {
return nil, errors.WithMessage(err, "could not add directory to file watcher")
}
go fw.Start(func(filename string) {
r, err := builder.BuildSite(builderConfig)
if err != nil {
log.Error("could not build site", "error", err)
}
updateCSPHashes(config, r)
liveReload.Reload()
})
}
loggingMux := http.NewServeMux()
mux, err := website.NewMux(config, runtimeConfig.Root)
if err != nil {
return nil, errors.Wrap(err, "could not create website mux")
}
log.Debug("binding main handler to", "host", listenAddress)
if runtimeConfig.Development || runtimeConfig.Redirect {
loggingMux.Handle(config.BaseURL.Hostname()+"/", mux)
loggingMux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
newURL := config.BaseURL.JoinPath(r.URL.String())
http.Redirect(w, r, newURL.String(), 301)
})
} else {
loggingMux.Handle("/", mux)
}
top.Handle("/",
serverHeaderHandler(
wrapHandlerWithLogging(loggingMux),
),
)
top.HandleFunc("/health", func(w http.ResponseWriter, _ *http.Request) {
w.WriteHeader(http.StatusNoContent)
})
return &Server{
Server: &http.Server{
Addr: listenAddress,
ReadHeaderTimeout: 1 * time.Minute,
Handler: http.MaxBytesHandler(h2c.NewHandler(
top,
&http2.Server{
IdleTimeout: 15 * time.Minute,
},
), 0),
},
config: config,
tls: runtimeConfig.TLS,
}, nil
}
func (s *Server) serve(tls bool) error {
if tls {
return s.serveTLS()
}
return s.serveTCP()
}
func (s *Server) Start() error {
if err := s.serve(s.tls); err != http.ErrServerClosed {
return errors.Wrap(err, "error creating/closing server")
}
return nil
}
func (s *Server) Stop() chan struct{} {
log.Debug("stop called")
idleConnsClosed := make(chan struct{})
go func() {
log.Debug("shutting down server")
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
err := s.Server.Shutdown(ctx)
log.Debug("server shut down")
if err != nil {
// Error from closing listeners, or context timeout:
log.Warn("HTTP server Shutdown", "error", err)
}
close(idleConnsClosed)
}()
return idleConnsClosed
}
|