93 lines
2.0 KiB
Go
93 lines
2.0 KiB
Go
package main
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import (
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"context"
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"log"
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"net/http"
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"net/http/httputil"
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"net/url"
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"os"
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"os/exec"
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"os/signal"
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"syscall"
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)
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func main() {
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config, oa2, err := LoadConfig()
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if err != nil {
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log.Printf("error loading config: %s\n", err.Error())
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}
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upstream, _ := url.Parse(config.Upstream.Addr)
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rp := httputil.NewSingleHostReverseProxy(upstream)
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var cmd *exec.Cmd
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if config.Upstream.Program != "" {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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cmd = exec.CommandContext(ctx, config.Upstream.Program, config.Upstream.Args...)
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cmd.Stdin = os.Stdin
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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defer func() {
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if cmd != nil && cmd.Process != nil {
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log.Println("Terminating child process...")
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cmd.Process.Signal(syscall.SIGTERM)
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cmd.Process.Wait()
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}
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}()
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go func() {
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if err := cmd.Run(); err != nil {
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log.Printf("Child process exited with error: %v\n", err)
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}
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}()
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}
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c := make(chan os.Signal, 1)
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signal.Notify(c, os.Interrupt, syscall.SIGTERM)
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go func() {
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<-c
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log.Println("Received shutdown signal, cleaning up...")
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if cmd != nil && cmd.Process != nil {
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cmd.Process.Signal(syscall.SIGTERM)
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cmd.Process.Wait()
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}
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os.Exit(0)
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}()
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oauthStore := NewSessionStore(&config, &oa2)
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http.Handle("/oauth/callback", oauthStore.CallbackHandler())
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http.Handle("/oauth/login", oauthStore.LoginPage())
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http.Handle("/oauth/unauthorized", oauthStore.UnauthorizedPage())
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protectedRoot := false
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for _, pattern := range config.GuardedPaths {
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if pattern == "/" {
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protectedRoot = true
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}
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http.Handle(pattern, oauthStore.Protected(rp))
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}
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if !protectedRoot {
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http.Handle("/", rp)
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}
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http.Handle("/favicon.ico", rp)
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listenAddr, _ := url.Parse(config.ListenURL)
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listenPort := listenAddr.Port()
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if listenPort == "" {
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if listenAddr.Scheme == "https" {
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listenPort = "443"
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} else {
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listenPort = "80"
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}
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}
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log.Printf("Starting server on port %s\n", listenPort)
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if err := http.ListenAndServe(":"+listenPort, nil); err != nil {
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log.Printf("Server error: %v\n", err)
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}
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}
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