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http.go
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http.go
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package main
import (
"encoding/json"
"fmt"
"log"
"net"
"net/http"
"os"
"strings"
)
var config Config
var Config_Filename string
var FaviconBytes []byte
func ShowInfo(w http.ResponseWriter, r *http.Request) {
str := "bostr2 - bostr next generation\n\n"
for _, r := range config.Relays {
str += fmt.Sprintf("- %s\n", r)
}
str += fmt.Sprintf("\nConnect to wss://%s or ws://%s (if not using TLS)\n", r.Host, r.Host)
str += "\nPowered by bostr2 - https://codeberg.org/Yonle/bostr2"
fmt.Fprint(w, str)
}
func ShowNIP11(w http.ResponseWriter) {
d, err := json.Marshal(config.NIP_11)
var header = w.Header()
header.Set("Content-Type", "application/json")
header.Set("Access-Control-Allow-Origin", "*")
if err != nil {
fmt.Fprintf(w, "{}")
return
}
w.Write(d)
}
func handleRequest(w http.ResponseWriter, r *http.Request) {
xff := r.Header.Get("X-Forwarded-For")
ua := r.Header.Get("User-Agent")
ip := strings.Split(xff, ",")[0]
if len(ip) < 1 {
ip, _, _ = net.SplitHostPort(r.RemoteAddr)
}
if r.Method == http.MethodGet && r.Header.Get("Upgrade") == "websocket" {
if pass := ConnPerIPRateLimit_Pass(ip, w); !pass {
return
}
Accept_Websocket(w, r, ip, ua)
} else {
log.Println(ip, r.Method, r.URL, ua)
// HUH??
if len(r.Header.Get("Upgrade")) > 0 {
http.Error(w, "Invalid Upgrade Header", 400)
return
}
accept := r.Header.Get("Accept")
if strings.Contains(accept, "application/nostr+json") {
ShowNIP11(w)
} else {
ShowInfo(w, r)
}
}
}
func handleFavicon(w http.ResponseWriter, r *http.Request) {
xff := r.Header.Get("X-Forwarded-For")
ua := r.Header.Get("User-Agent")
ip := strings.Split(xff, ",")[0]
log.Println(ip, r.Method, r.URL, ua)
var header = w.Header()
header.Set("Content-Type", "image/vnd.microsoft.icon")
header.Set("Access-Control-Allow-Origin", "*")
w.Write(FaviconBytes)
}
func LoadFavicon() {
if len(config.Favicon) < 1 {
return
}
bytes, err := os.ReadFile(config.Favicon)
if err != nil {
log.Printf("Failed to load favicon (%s) into memory: %v", config.Favicon, err)
return
}
FaviconBytes = bytes
log.Printf("Loaded favicon (%s) into memory", config.Favicon)
}
func LoadConfig() {
log.Printf("Reading config file %s....\n", Config_Filename)
ReadConfig(Config_Filename, &config)
}
func Serve() {
http.HandleFunc("/favicon.ico", handleFavicon)
http.HandleFunc("/", handleRequest)
log.Printf("Listening on %s....\n", config.Listen)
if err := http.ListenAndServe(config.Listen, nil); err != nil {
panic(err)
}
}