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124 lines
2.5 KiB
Go
124 lines
2.5 KiB
Go
package main
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import (
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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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"time"
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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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)
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var config struct {
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ProxyAddr string `
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name: proxy_addr
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default: ":8080"
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help: proxy address. Browsers send their http traffic to this port.
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`
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AppAddr string `
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name: app_addr
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default: ":9000"
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help: app address. Users visit this address to view the proxy's history db
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`
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DbPath string `
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name: dbpath
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default: history.db
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help: path to a sqlite file used for storing the user's history
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`
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Timeout time.Duration `
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name: timeout
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default: 30s
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help: useless timeout value for testing durations
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`
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}
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func httpHandler(w http.ResponseWriter, r *http.Request) {
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id := newRequestId()
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fmt.Printf("%s >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\n", id.String())
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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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start := time.Now()
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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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fmt.Printf("%s <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<\n", id.String())
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resb, err := httputil.DumpResponse(res, false)
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if err != nil {
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fmt.Printf("fuuuuuuuuuck")
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}
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os.Stdout.Write(resb)
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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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elapsed := time.Since(start)
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r.RequestURI = requestURI
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fmt.Printf("elapsed: %v (%v)\n", elapsed, elapsed.Nanoseconds()/1000000)
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saveRequest(id, r)
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saveResponse(id, res, elapsed)
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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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m := http.NewServeMux()
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m.HandleFunc("/", httpHandler)
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http.ListenAndServe(config.ProxyAddr, m)
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}
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func main() {
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moon.Parse(&config)
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if err := openDB(); err != nil {
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bail(1, "unable to open db: %s", err)
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}
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defer db.Close()
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go appServer()
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proxyListener()
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}
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