auto upgrade server to https when certificates are ready

This commit is contained in:
m5r 2024-07-19 12:32:11 +02:00
parent 61cf3ec24d
commit 43788570ee
Signed by: mokhtar
GPG Key ID: 1509B54946D08A95

View File

@ -1,6 +1,7 @@
package http
import (
"context"
"net/http"
"os"
"strings"
@ -9,52 +10,53 @@ import (
"local-ip.sh/utils"
)
func ServeHttp() {
utils.Logger.Info().Msg("Waiting until \"local-ip.sh\" certificate is delivered to start up HTTP server...")
waitForCertificate()
go http.ListenAndServe(":80", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
url := r.URL
url.Host = r.Host
url.Scheme = "https"
http.Redirect(w, r, url.String(), http.StatusMovedPermanently)
}))
http.HandleFunc("/server.key", func(w http.ResponseWriter, r *http.Request) {
func registerHandlers() {
http.HandleFunc("GET /server.key", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/octet-stream")
http.ServeFile(w, r, "/certs/wildcard/server.key")
})
http.HandleFunc("/server.pem", func(w http.ResponseWriter, r *http.Request) {
http.HandleFunc("GET /server.pem", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/x-x509-ca-cert")
http.ServeFile(w, r, "/certs/wildcard/server.pem")
})
http.HandleFunc("/og.png", func(w http.ResponseWriter, r *http.Request) {
http.HandleFunc("GET /og.png", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "image/png; charset=utf-8")
w.Header().Set("Cache-Control", "public, max-age=3600")
http.ServeFile(w, r, "./http/static/og.png")
})
http.HandleFunc("/favicon.ico", func(w http.ResponseWriter, r *http.Request) {
http.HandleFunc("GET /favicon.ico", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "image/x-icon; charset=utf-8")
w.Header().Set("Cache-Control", "public, max-age=3600")
http.ServeFile(w, r, "./http/static/favicon.ico")
})
http.HandleFunc("/styles.css", func(w http.ResponseWriter, r *http.Request) {
http.HandleFunc("GET /styles.css", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/css; charset=utf-8")
http.ServeFile(w, r, "./http/static/styles.css")
})
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
http.HandleFunc("GET /", func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path != "/" {
http.Error(w, "Not Found", http.StatusNotFound)
return
}
w.Header().Set("Content-Type", "text/html; charset=utf-8")
http.ServeFile(w, r, "./http/static/index.html")
})
utils.Logger.Info().Msg("Starting up HTTPS server on :443\n")
err := http.ListenAndServeTLS(":443", "/certs/root/server.pem", "/certs/root/server.key", nil)
if err != nil {
utils.Logger.Fatal().Err(err).Msg("Failed to start HTTPS server")
}
}
func waitForCertificate() {
func serveHttp() *http.Server {
utils.Logger.Info().Msg("Starting up HTTP server on :80")
httpServer := &http.Server{Addr: ":http"}
go func() {
err := httpServer.ListenAndServe()
if err != http.ErrServerClosed {
utils.Logger.Fatal().Err(err).Msg("Unexpected error received from HTTP server")
}
}()
return httpServer
}
func waitForCertificate(ready chan bool) {
for {
_, err := os.Stat("/certs/root/output.json")
if err != nil {
@ -66,4 +68,52 @@ func waitForCertificate() {
}
break
}
ready <- true
}
func killServer(httpServer *http.Server) {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
err := httpServer.Shutdown(ctx)
if err != nil {
utils.Logger.Fatal().Err(err).Msg("Unexpected error when shutting down HTTP server")
}
utils.Logger.Debug().Msg("HTTP server shut down correctly")
}
func redirectHttpToHttps() {
utils.Logger.Info().Msg("Redirecting HTTP traffic from :80 to HTTPS :443")
httpServer := &http.Server{
Addr: ":http",
Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
url := r.URL
url.Host = r.Host
url.Scheme = "https"
http.Redirect(w, r, url.String(), http.StatusMovedPermanently)
}),
}
go httpServer.ListenAndServe()
}
func serveHttps() {
utils.Logger.Info().Msg("Starting up HTTPS server on :443")
httpsServer := &http.Server{Addr: ":https"}
go httpsServer.ListenAndServeTLS("/certs/root/server.pem", "/certs/root/server.key")
}
func ServeHttp() {
registerHandlers()
httpServer := serveHttp()
ready := make(chan bool, 1)
go waitForCertificate(ready)
<-ready
killServer(httpServer)
serveHttps()
redirectHttpToHttps()
}