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/*
* The main logic for fbfp.
*
* 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 (
"errors"
"fmt"
"html/template"
"log"
"net"
"net/http"
"net/http/fcgi"
"gorm.io/gorm"
)
var db *gorm.DB
var tmpl *template.Template
func handle_index(w http.ResponseWriter, req *http.Request) {
session_cookie, err := req.Cookie("session")
if errors.Is(err, http.ErrNoCookie) {
err = tmpl.ExecuteTemplate(
w,
"index_login",
map[string]string{
"authUrl": generate_authorization_url(),
},
)
if err != nil {
log.Println(err)
return
}
return
} else if err != nil {
w.Header().Set("Content-Type", "text/plain; charset=utf-8")
w.WriteHeader(400)
w.Write([]byte(fmt.Sprintf(
"Error\n" +
"Unable to check cookie.",
)))
return
}
var session session_t
err = db.First(&session, session_t{Cookie: session_cookie.Value}).Error
if err != nil {
err = tmpl.ExecuteTemplate(
w,
"index_login",
map[string]interface{}{
"authUrl": generate_authorization_url(),
"notes": []string{"Cookie lookup failed. You are now unauthenticated."},
},
)
if err != nil {
log.Println(err)
return
}
return
}
fmt.Println(session.User)
user := session.User
err = tmpl.ExecuteTemplate(
w,
"index",
map[string]interface{}{
"user": user,
},
)
if err != nil {
log.Println(err)
return
}
}
func main() {
/*
* This seems necessary because in the following sections I need to
* assign to global variables like db and tmpl. If I use = there, and
* don't declare err here, then err is undeclared; but if I use :=
* there, my global variables are treated as local variables.
*/
var err error
fbfp_get_config("fbfp.scfg")
log.Printf("Setting up database\n")
e(setup_database())
log.Printf("Setting up templates\n")
tmpl = er(template.ParseGlob(config.Tmpl + "/*"))
if config.Static {
log.Printf("Registering static handle\n")
fs := http.FileServer(http.Dir("./static"))
http.Handle("/static/", http.StripPrefix("/static/", fs))
}
log.Printf("Registering handlers\n")
http.HandleFunc("/{$}", handle_index)
http.HandleFunc("/oidc", handle_oidc)
log.Printf("Fetching OpenID Connect configuration\n")
get_openid_config(config.Openid.Endpoint)
log.Printf(
"Establishing listener for net \"%s\", addr \"%s\"\n",
config.Listen.Net,
config.Listen.Addr,
)
l := er(net.Listen(config.Listen.Net, config.Listen.Addr))
if config.Listen.Proto == "http" {
log.Printf("Serving http\n")
err = http.Serve(l, nil)
} else if config.Listen.Proto == "fcgi" {
log.Printf("Serving fcgi\n")
err = fcgi.Serve(l, nil)
}
e(err)
}
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