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/*
* Main listener
*
* Copyright (C) 2024 Runxi Yu <https://runxiyu.org>
* SPDX-License-Identifier: AGPL-3.0-or-later
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package main
import (
"crypto/tls"
"html/template"
"log"
"net"
"net/http"
"time"
)
var tmpl *template.Template
func main() {
var err error
if err := fetchConfig("cca.scfg"); err != nil {
log.Fatal(err)
}
log.Println("Setting up database")
if err := setupDatabase(); err != nil {
log.Fatal(err)
}
log.Println("Setting up JWKS")
if err := setupJwks(); err != nil {
log.Fatal(err)
}
log.Println("Setting up templates")
tmpl, err = template.ParseGlob(config.Tmpl)
if err != nil {
log.Fatal(err)
}
log.Println("Setting up courses")
err = setupCourses()
if err != nil {
log.Fatal(err)
}
log.Println("Registering static handle")
fs := http.FileServer(http.Dir(config.Static))
http.Handle("/static/", http.StripPrefix("/static/", fs))
log.Println("Registering handlers")
http.HandleFunc("/{$}", handleIndex)
http.HandleFunc("/auth", handleAuth)
http.HandleFunc("/ws", handleWs)
var l net.Listener
switch config.Listen.Trans {
case "plain":
log.Printf(
"Establishing plain listener for net \"%s\", addr \"%s\"\n",
config.Listen.Net,
config.Listen.Addr,
)
l, err = net.Listen(config.Listen.Net, config.Listen.Addr)
if err != nil {
log.Fatalf("Failed to establish plain listener: %v\n", err)
}
case "tls":
cer, err := tls.LoadX509KeyPair(config.Listen.TLS.Cert, config.Listen.TLS.Key)
if err != nil {
log.Fatalf("Failed to load TLS certificate and key: %v\n", err)
}
tlsconfig := &tls.Config{
Certificates: []tls.Certificate{cer},
MinVersion: tls.VersionTLS13,
} //exhaustruct:ignore
log.Printf(
"Establishing TLS listener for net \"%s\", addr \"%s\"\n",
config.Listen.Net,
config.Listen.Addr,
)
l, err = tls.Listen(config.Listen.Net, config.Listen.Addr, tlsconfig)
if err != nil {
log.Fatalf("Failed to establish TLS listener: %v\n", err)
}
default:
log.Fatalln("listen.trans must be \"plain\" or \"tls\"")
}
if config.Listen.Proto == "http" {
log.Println("Serving http")
srv := &http.Server{
ReadHeaderTimeout: time.Duration(config.Perf.ReadHeaderTimeout) * time.Second,
} //exhaustruct:ignore
err = srv.Serve(l)
} else {
log.Fatalln("Unsupported protocol")
}
if err != nil {
log.Fatal(err)
}
}
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