mirror of
https://github.com/1f349/violet.git
synced 2024-11-21 19:01:39 +00:00
102 lines
3.0 KiB
Go
102 lines
3.0 KiB
Go
package servers
|
|
|
|
import (
|
|
"crypto/tls"
|
|
"fmt"
|
|
"github.com/1f349/violet/favicons"
|
|
"github.com/1f349/violet/servers/conf"
|
|
"github.com/1f349/violet/utils"
|
|
"github.com/sethvargo/go-limiter/httplimit"
|
|
"github.com/sethvargo/go-limiter/memorystore"
|
|
"log"
|
|
"net/http"
|
|
"path"
|
|
"runtime"
|
|
"time"
|
|
)
|
|
|
|
// NewHttpsServer creates and runs a http server containing the public https
|
|
// endpoints for the reverse proxy.
|
|
func NewHttpsServer(conf *conf.Conf) *http.Server {
|
|
r := http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
|
|
log.Printf("[Debug] Request: %s - '%s' - '%s' - '%s' - len: %d - thread: %d\n", req.Method, req.URL.String(), req.RemoteAddr, req.Host, req.ContentLength, runtime.NumGoroutine())
|
|
conf.Router.ServeHTTP(rw, req)
|
|
})
|
|
favMiddleware := setupFaviconMiddleware(conf.Favicons, r)
|
|
rateLimiter := setupRateLimiter(conf.RateLimit, favMiddleware)
|
|
|
|
return &http.Server{
|
|
Addr: conf.HttpsListen,
|
|
Handler: rateLimiter,
|
|
TLSConfig: &tls.Config{GetCertificate: func(info *tls.ClientHelloInfo) (*tls.Certificate, error) {
|
|
// error out on invalid domains
|
|
if !conf.Domains.IsValid(info.ServerName) {
|
|
return nil, fmt.Errorf("invalid hostname used: '%s'", info.ServerName)
|
|
}
|
|
|
|
// find a certificate
|
|
cert := conf.Certs.GetCertForDomain(info.ServerName)
|
|
if cert == nil {
|
|
return nil, fmt.Errorf("failed to find certificate for: '%s'", info.ServerName)
|
|
}
|
|
|
|
// time to return
|
|
return cert, nil
|
|
}},
|
|
ReadTimeout: 150 * time.Second,
|
|
ReadHeaderTimeout: 150 * time.Second,
|
|
WriteTimeout: 150 * time.Second,
|
|
IdleTimeout: 150 * time.Second,
|
|
MaxHeaderBytes: 4096000,
|
|
}
|
|
}
|
|
|
|
// setupRateLimiter is an internal function to create a middleware to manage
|
|
// rate limits.
|
|
func setupRateLimiter(rateLimit uint64, next http.Handler) http.Handler {
|
|
// create memory store
|
|
store, err := memorystore.New(&memorystore.Config{
|
|
Tokens: rateLimit,
|
|
Interval: time.Minute,
|
|
})
|
|
if err != nil {
|
|
log.Fatalln(err)
|
|
}
|
|
|
|
// create a middleware using ips as the key for rate limits
|
|
middleware, err := httplimit.NewMiddleware(store, httplimit.IPKeyFunc())
|
|
if err != nil {
|
|
log.Fatalln(err)
|
|
}
|
|
return middleware.Handle(next)
|
|
}
|
|
|
|
func setupFaviconMiddleware(fav *favicons.Favicons, next http.Handler) http.Handler {
|
|
return http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
|
|
if req.Header.Get("X-Violet-Loop-Detect") == "1" {
|
|
rw.WriteHeader(http.StatusLoopDetected)
|
|
_, _ = rw.Write([]byte("Detected a routing loop\n"))
|
|
return
|
|
}
|
|
if req.Header.Get("X-Violet-Raw-Favicon") != "1" {
|
|
switch req.URL.Path {
|
|
case "/favicon.svg", "/favicon.png", "/favicon.ico":
|
|
icons := fav.GetIcons(req.Host)
|
|
if icons == nil {
|
|
break
|
|
}
|
|
raw, contentType, err := icons.ProduceForExt(path.Ext(req.URL.Path))
|
|
if err != nil {
|
|
utils.RespondVioletError(rw, http.StatusTeapot, "No icon available")
|
|
return
|
|
}
|
|
rw.Header().Set("Content-Type", contentType)
|
|
rw.WriteHeader(http.StatusOK)
|
|
_, _ = rw.Write(raw)
|
|
return
|
|
}
|
|
}
|
|
next.ServeHTTP(rw, req)
|
|
})
|
|
}
|