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97 lines
1.9 KiB
Go
97 lines
1.9 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"github.com/jordanorelli/moon/lib"
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"io"
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"net/http"
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"net/http/httputil"
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"os"
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"strings"
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"unicode"
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)
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var (
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client = new(http.Client)
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conf *moon.Doc
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)
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func httpHandler(w http.ResponseWriter, r *http.Request) {
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fmt.Println("from:", r.RemoteAddr)
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if err := freezeRequest(r); err != nil {
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fmt.Printf("error freezing request: %s\n", err)
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return
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}
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b, err := httputil.DumpRequest(r, true)
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if err != nil {
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fmt.Printf("error dumping request: %s\n", err)
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return
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}
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os.Stdout.Write(b)
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requestURI := r.RequestURI
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r.RequestURI = ""
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r.URL.Scheme = strings.Map(unicode.ToLower, r.URL.Scheme)
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res, err := client.Do(r)
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if err != nil {
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fmt.Printf("error forwarding request: %s\n", err)
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return
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}
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defer res.Body.Close()
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for k, v := range res.Header {
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w.Header()[k] = v
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}
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if _, ok := w.Header()["Proxy-Connection"]; ok {
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delete(w.Header(), "Proxy-Connection")
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}
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w.WriteHeader(res.StatusCode)
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if _, err := io.Copy(w, res.Body); err != nil {
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fmt.Printf("error copying body: %s\n", err)
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}
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if requestHistory == nil {
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requestHistory = make([]http.Request, 0, 100)
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}
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r.RequestURI = requestURI
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requestHistory = append(requestHistory, *r)
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}
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func bail(status int, t string, args ...interface{}) {
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if status == 0 {
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fmt.Fprintf(os.Stdout, t+"\n", args...)
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} else {
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fmt.Fprintf(os.Stderr, t+"\n", args...)
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}
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os.Exit(status)
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}
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func proxyListener() {
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var addr string
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if err := conf.Get("proxy_addr", &addr); err != nil {
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bail(1, "error reading proxy_addr from config: %s", err)
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}
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m := http.NewServeMux()
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m.HandleFunc("/", httpHandler)
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http.ListenAndServe(addr, m)
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}
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func main() {
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var configPath string
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flag.StringVar(&configPath, "config", "./prox_config.moon", "path to configuration file")
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flag.Parse()
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var err error
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conf, err = moon.ReadFile(configPath)
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if err != nil {
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bail(1, "unable to read config: %s", err)
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}
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go appServer()
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proxyListener()
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}
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