2018-05-02 15:45:45 -06:00
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package main
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import (
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2018-05-04 17:20:51 -06:00
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"bufio"
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2018-05-08 12:45:50 -06:00
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"github.com/namsral/flag"
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2018-05-02 15:45:45 -06:00
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"fmt"
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"log"
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"net/http"
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"os"
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"path"
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"strings"
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"time"
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)
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2018-05-06 21:37:52 -06:00
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var moduleDir string
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var stateDir string
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var cacheDir string
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2018-05-02 15:45:45 -06:00
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var categories = []string{}
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2018-05-04 17:20:51 -06:00
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// anchoredSearch looks for needle in filename,
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// skipping the first skip space-delimited words
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func anchoredSearch(filename string, needle string, skip int) bool {
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f, err := os.Open(filename)
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if err != nil {
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log.Print("Can't open %s: %s", filename, err)
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return false
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}
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defer f.Close()
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scanner := bufio.NewScanner(f)
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for scanner.Scan() {
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line := scanner.Text()
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parts := strings.SplitN(" ", line, skip+1)
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if parts[skip+1] == needle {
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return true
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}
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}
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2018-05-02 17:00:53 -06:00
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2018-05-04 17:20:51 -06:00
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return false
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2018-05-02 15:45:45 -06:00
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}
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2018-05-04 17:20:51 -06:00
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func showPage(w http.ResponseWriter, title string, body string) {
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w.WriteHeader(http.StatusOK)
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fmt.Fprintf(w, "<!DOCTYPE html>")
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fmt.Fprintf(w, "<html><head>")
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fmt.Fprintf(w, "<title>%s</title>", title)
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fmt.Fprintf(w, "<link rel=\"stylesheet\" href=\"static/style.css\">")
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fmt.Fprintf(w, "<meta name=\"viewport\" content=\"width=device-width\"></head>")
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fmt.Fprintf(w, "<link rel=\"icon\" href=\"res/luna-moth.svg\" type=\"image/svg+xml\">")
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fmt.Fprintf(w, "<link rel=\"icon\" href=\"res/luna-moth.png\" type=\"image/png\">")
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fmt.Fprintf(w, "<body><h1>%s</h1>", title)
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fmt.Fprintf(w, "<section>%s</section>", body)
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fmt.Fprintf(w, "<nav>")
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fmt.Fprintf(w, "<ul>")
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fmt.Fprintf(w, "<li><a href=\"static/puzzles.html\">Puzzles</a></li>")
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fmt.Fprintf(w, "<li><a href=\"static/scoreboard.html\">Scoreboard</a></li>")
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fmt.Fprintf(w, "</ul>")
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fmt.Fprintf(w, "</nav>")
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fmt.Fprintf(w, "</body></html>")
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}
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2018-05-06 21:37:52 -06:00
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func modulesPath(parts ...string) string {
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tail := path.Join(parts...)
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return path.Join(moduleDir, tail)
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}
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2018-05-02 17:00:53 -06:00
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func statePath(parts ...string) string {
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tail := path.Join(parts...)
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return path.Join(stateDir, tail)
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}
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func cachePath(parts ...string) string {
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tail := path.Join(parts...)
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return path.Join(cacheDir, tail)
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2018-05-02 15:45:45 -06:00
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}
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2018-05-08 12:45:50 -06:00
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func logRequest(handler http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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log.Printf("HTTP %s %s %s\n", r.RemoteAddr, r.Method, r.URL)
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handler.ServeHTTP(w, r)
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})
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}
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2018-05-06 21:37:52 -06:00
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func setup() error {
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// Roll over and die if directories aren't even set up
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if _, err := os.Stat(modulesPath()); os.IsNotExist(err) {
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return err
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}
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if _, err := os.Stat(statePath()); os.IsNotExist(err) {
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return err
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}
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if _, err := os.Stat(cachePath()); os.IsNotExist(err) {
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return err
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}
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// Make sure points directories exist
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os.Mkdir(statePath("points.tmp"), 0755)
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os.Mkdir(statePath("points.new"), 0755)
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// Preseed available team ids if file doesn't exist
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if f, err := os.OpenFile(statePath("teamids.txt"), os.O_WRONLY | os.O_CREATE | os.O_EXCL, 0644); err == nil {
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defer f.Close()
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for i := 0; i <= 9999; i += 1 {
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fmt.Fprintf(f, "%04d\n", i)
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}
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2018-05-02 15:45:45 -06:00
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}
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2018-05-06 21:37:52 -06:00
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return nil
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}
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2018-05-02 15:45:45 -06:00
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func main() {
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2018-05-08 12:45:50 -06:00
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var maintenanceInterval time.Duration
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var listen string
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fs := flag.NewFlagSetWithEnvPrefix(os.Args[0], "MOTH", flag.ExitOnError)
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fs.StringVar(
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&moduleDir,
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"modules",
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"/moth/modules",
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"Path where your moth modules live",
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)
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fs.StringVar(
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&stateDir,
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"state",
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"/moth/state",
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"Path where state should be written",
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)
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fs.StringVar(
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&cacheDir,
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"cache",
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"/moth/cache",
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"Path for ephemeral cache",
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)
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fs.DurationVar(
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&maintenanceInterval,
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"maint",
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20 * time.Second,
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"Maintenance interval",
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)
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fs.StringVar(
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&listen,
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"listen",
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":8080",
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"[host]:port to bind and listen",
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)
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2018-05-08 12:45:50 -06:00
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fs.Parse(os.Args[1:])
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2018-05-06 21:37:52 -06:00
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if err := setup(); err != nil {
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log.Fatal(err)
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}
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2018-05-08 12:45:50 -06:00
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go maintenance(maintenanceInterval)
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2018-05-08 12:45:50 -06:00
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fileserver := http.FileServer(http.Dir(cacheDir))
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http.HandleFunc("/", rootHandler)
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http.Handle("/static/", http.StripPrefix("/static", fileserver))
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2018-05-06 21:37:52 -06:00
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2018-05-04 17:20:51 -06:00
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http.HandleFunc("/register", registerHandler)
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http.HandleFunc("/token", tokenHandler)
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http.HandleFunc("/answer", answerHandler)
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2018-05-08 12:45:50 -06:00
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http.HandleFunc("/puzzles.json", puzzlesHandler)
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http.HandleFunc("/points.json", pointsHandler)
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2018-05-02 15:45:45 -06:00
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2018-05-08 12:45:50 -06:00
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log.Printf("Listening on %s", listen)
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log.Fatal(http.ListenAndServe(listen, logRequest(http.DefaultServeMux)))
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2018-05-06 21:37:52 -06:00
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}
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