mirror of https://github.com/dirtbags/moth.git
Moving toward a working server
This commit is contained in:
Neale Pickett
parent
5bb050166e
commit
3b3783f9ca
159
README.md
159
README.md
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@ -8,7 +8,9 @@ which in the past has been called
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"HACK",
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"Queen Of The Hill",
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"Cyber Spark",
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and "Cyber Fire".
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"Cyber Fire",
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"Cyber Fire Puzzles",
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and "Cyber Fire Foundry".
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Information about these events is at
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http://dirtbags.net/contest/
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@ -48,75 +50,110 @@ More on how the devel sever works in
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Running A Production Server
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====================
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XXX: Update this
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Run `dirtbags/moth` (Docker) or `mothd` (native).
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How to install it
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--------------------
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`mothd` assumes you're running a contest out of `/moth`.
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For Docker, you'll need to bind-mount your actual directories
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(`state`, `mothballs`, and optionally `resources`) into
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`/moth/`.
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It's made to be virtualized,
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so you can run multiple contests at once if you want.
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If you were to want to run it out of `/srv/moth`,
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do the following:
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$ mothinst=/srv/moth/mycontest
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$ mkdir -p $mothinst
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$ install.sh $mothinst
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Yay, you've got it installed.
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How to run a contest
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------------------------
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`mothd` runs through every contest on your server every few seconds,
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and does housekeeping tasks that make the contest "run".
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If you stop `mothd`, people can still play the contest,
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but their points won't show up on the scoreboard.
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A handy side-effect here is that if you need to meddle with the points log,
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you can just kill `mothd`,
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do you work,
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then bring `mothd` back up.
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$ cp src/mothd /srv/moth
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$ /srv/moth/mothd
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You're also going to need a web server if you want people to be able to play.
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You can override any path with an option,
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run `mothd -help` for usage.
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How to run a web server
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-----------------------------
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Your web server needs to serve up files for you contest out of
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`$mothinst/www`.
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If you don't want to fuss around with setting up a full-featured web server,
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you can use `tcpserver` and `eris`,
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which is what we use to run our contests.
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`tcpserver` is part of the `uscpi-tcp` package in Ubuntu.
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You can also use busybox's `tcpsvd` (my preference, but a PITA on Ubuntu).
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`eris` can be obtained at https://woozle.org/neale/g.cgi/net/eris/about/
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$ mothinst=/srv/moth/mycontest
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$ $mothinst/bin/httpd
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State Directory
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===============
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Installing Puzzle Categories
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------------------------------------
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Pausing scoring
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-------------------
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Puzzle categories are distributed in a different way than the server.
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After setting up (see above), just run
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Create the file `state/disabled`
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to pause scoring,
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and remove it to resume.
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You can use the Unix `touch` command to create the file:
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$ /srv/koth/mycontest/bin/install-category /path/to/my/category
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touch state/disabled
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When scoring is paused,
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participants can still submit answers,
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and the system will tell them whether the answer is correct.
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As soon as you unpause,
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all correctly-submitted answers will be scored.
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Permissions
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----------------
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Resetting an instance
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-------------------
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It's up to you not to be a bonehead about permissions.
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Remove the file `state/initialized`,
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and the server will zap everything.
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Setting up custom team IDs
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-------------------
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The file `state/teamids.txt` has all the team IDs,
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one per line.
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This defaults to all 4-digit natural numbers.
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You can edit it to be whatever strings you like.
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We sometimes to set `teamids.txt` to a bunch of random 8-digit hex values:
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for i in $(seq 50); do od -x /dev/urandom | awk '{print $2 $3; exit;}'; done
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Remember that team IDs are essentially passwords.
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Mothball Directory
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==================
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Installing puzzle categories
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-------------------
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The development server will provide you with a `.mb` (mothball) file,
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when you click the `[mb]` link next to a category.
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Just drop that file into the `mothballs` directory,
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and the server will pick it up.
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If you remove a mothball,
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the category will vanish,
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but points scored in that category won't!
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Resources Directory
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===================
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Making it look better
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-------------------
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`mothd` provides some built-in HTML for rendering a complete contest,
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but it's rather bland.
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You can override everything by dropping a new file into the `resources` directory:
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* `basic.css` is used by the default HTML to pretty things up
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* `index.html` is the landing page, which asks to register a team
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* `puzzle.html` and `puzzle.js` render a puzzle from JSON
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* `puzzle-list.html` and `puzzle-list.js` render the list of active puzzles from JSON
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* `scoreboard.html` and `scoreboard.js` render the current scoreboard from JSON
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* Any other file in the `resources` directory will be served up, too.
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If you don't want to read through the source code, I don't blame you.
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Run a `mothd` server and pull the various static resources into your `resources` directory,
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and then you can start hacking away at them.
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Changing scoring
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--------------
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Believe it or not,
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scoring is determined client-side in the scoreboard,
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from the points log.
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You can hack in whatever algorithm you like.
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If you do hack in a new algorithm,
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please be a dear and email it to us.
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We'd love to see it!
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Install sets it so the web user on your system can write to the files it needs to,
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but if you're using Apache,
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it plays games with user IDs when running CGI.
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You're going to have to figure out how to configure your preferred web server.
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32
src/award.go
32
src/award.go
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@ -1,6 +1,7 @@
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package main
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import (
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"encoding/json"
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"fmt"
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"strconv"
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"strings"
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@ -18,16 +19,40 @@ func (a *Award) String() string {
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return fmt.Sprintf("%d %s %s %d", a.When.Unix(), a.TeamId, a.Category, a.Points)
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}
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func (a *Award) MarshalJSON() ([]byte, error) {
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if a == nil {
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return []byte("null"), nil
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}
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jTeamId, err := json.Marshal(a.TeamId)
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if err != nil {
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return nil, err
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}
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jCategory, err := json.Marshal(a.Category)
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if err != nil {
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return nil, err
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}
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ret := fmt.Sprintf(
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"[%d,%s,%s,%d]",
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a.When.Unix(),
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jTeamId,
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jCategory,
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a.Points,
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)
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return []byte(ret), nil
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}
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func ParseAward(s string) (*Award, error) {
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ret := Award{}
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s = strings.Trim(s, " \t\n")
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parts := strings.SplitN(s, " ", 5)
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if len(parts) < 4 {
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return nil, fmt.Errorf("Malformed award string")
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}
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whenEpoch, err := strconv.ParseInt(parts[0], 10, 64)
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if (err != nil) {
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if err != nil {
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return nil, fmt.Errorf("Malformed timestamp: %s", parts[0])
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}
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ret.When = time.Unix(whenEpoch, 0)
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@ -36,11 +61,10 @@ func ParseAward(s string) (*Award, error) {
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ret.Category = parts[2]
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points, err := strconv.Atoi(parts[3])
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if (err != nil) {
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return nil, fmt.Errorf("Malformed Points: %s", parts[3])
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if err != nil {
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return nil, fmt.Errorf("Malformed Points: %s: %v", parts[3], err)
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}
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ret.Points = points
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return &ret, nil
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}
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238
src/handlers.go
238
src/handlers.go
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@ -1,65 +1,61 @@
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package main
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import (
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"bufio"
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"encoding/json"
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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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"regexp"
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"strings"
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"strconv"
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"io"
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"log"
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"bufio"
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"strings"
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)
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// anchoredSearch looks for needle in r,
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// skipping the first skip space-delimited words
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func anchoredSearch(r io.Reader, needle string, skip int) bool {
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scanner := bufio.NewScanner(r)
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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 (len(parts) > skip) && (parts[skip] == needle) {
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return true
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func respond(w http.ResponseWriter, req *http.Request, status Status, short string, description string) {
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// This is a kludge. Do proper parsing when this causes problems.
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accept := req.Header.Get("Accept")
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if strings.Contains(accept, "application/json") {
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ShowJSend(w, status, short, description)
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} else {
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ShowHtml(w, status, short, description)
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}
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}
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return false
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}
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func anchoredSearchFile(filename string, needle string, skip int) bool {
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r, err := os.Open(filename)
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if err != nil {
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return false
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}
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defer r.Close()
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return anchoredSearch(r, needle, skip)
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}
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func (ctx Instance) registerHandler(w http.ResponseWriter, req *http.Request) {
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teamname := req.FormValue("n")
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teamid := req.FormValue("h")
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teamname := req.FormValue("name")
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teamid := req.FormValue("id")
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if matched, _ := regexp.MatchString("[^0-9a-z]", teamid); matched {
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teamid = ""
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// Keep foolish operators from shooting themselves in the foot
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// You would have to add a pathname to your list of Team IDs to open this vulnerability,
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// but I have learned not to overestimate people.
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if strings.Contains(teamid, "../") {
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teamid = "rodney"
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}
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if (teamid == "") || (teamname == "") {
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showPage(w, "Invalid Entry", "Oops! Are you sure you got that right?")
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respond(
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w, req, Fail,
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"Invalid Entry",
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"Either `id` or `name` was missing from this request.",
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)
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return
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}
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if !anchoredSearchFile(ctx.StatePath("teamids.txt"), teamid, 0) {
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showPage(w, "Invalid Team ID", "I don't have a record of that team ID. Maybe you used capital letters accidentally?")
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respond(
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w, req, Fail,
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"Invalid Team ID",
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"I don't have a record of that team ID. Maybe you used capital letters accidentally?",
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)
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return
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}
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f, err := os.OpenFile(ctx.StatePath(teamid), os.O_CREATE|os.O_EXCL|os.O_WRONLY, 0644)
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f, err := os.OpenFile(ctx.StatePath("teams", teamid), os.O_CREATE|os.O_EXCL|os.O_WRONLY, 0644)
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if err != nil {
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showPage(
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w,
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log.Print(err)
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respond(
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w, req, Fail,
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"Registration failed",
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"Unable to register. Perhaps a teammate has already registered?",
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)
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@ -67,7 +63,11 @@ func (ctx Instance) registerHandler(w http.ResponseWriter, req *http.Request) {
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}
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defer f.Close()
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fmt.Fprintln(f, teamname)
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showPage(w, "Success", "Okay, your team has been named and you may begin using your team ID!")
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respond(
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w, req, Success,
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"Team registered",
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"Okay, your team has been named and you may begin using your team ID!",
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)
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}
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func (ctx Instance) tokenHandler(w http.ResponseWriter, req *http.Request) {
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@ -76,7 +76,11 @@ func (ctx Instance) tokenHandler(w http.ResponseWriter, req *http.Request) {
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// Check answer
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if !anchoredSearchFile(ctx.StatePath("tokens.txt"), token, 0) {
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showPage(w, "Unrecognized token", "I don't recognize that token. Did you type in the whole thing?")
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respond(
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w, req, Fail,
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"Unrecognized token",
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"I don't recognize that token. Did you type in the whole thing?",
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)
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return
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}
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@ -97,15 +101,27 @@ func (ctx Instance) tokenHandler(w http.ResponseWriter, req *http.Request) {
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}
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if (category == "") || (points == 0) {
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showPage(w, "Unrecognized token", "Something doesn't look right about that token")
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respond(
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w, req, Fail,
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"Unrecognized token",
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"Something doesn't look right about that token",
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)
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return
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}
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if err := ctx.AwardPoints(teamid, category, points); err != nil {
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showPage(w, "Error awarding points", err.Error())
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respond(
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w, req, Fail,
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"Error awarding points",
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err.Error(),
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)
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return
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}
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showPage(w, "Points awarded", fmt.Sprintf("%d points for %s!", points, teamid))
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respond(
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w, req, Success,
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"Points awarded",
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fmt.Sprintf("%d points for %s!", points, teamid),
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)
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}
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func (ctx Instance) answerHandler(w http.ResponseWriter, req *http.Request) {
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@ -121,15 +137,22 @@ func (ctx Instance) answerHandler(w http.ResponseWriter, req *http.Request) {
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catmb, ok := ctx.Categories[category]
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if !ok {
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showPage(w, "Category does not exist", "The specified category does not exist. Sorry!")
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respond(
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w, req, Fail,
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"Category does not exist",
|
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"The requested category does not exist. Sorry!",
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)
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return
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}
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// Get the answers
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haystack, err := catmb.Open("answers.txt")
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if err != nil {
|
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showPage(w, "Answers do not exist",
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"Please tell the contest people that the mothball for this category has no answers.txt in it!")
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respond(
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w, req, Error,
|
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"Answers do not exist",
|
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"Please tell the contest people that the mothball for this category has no answers.txt in it!",
|
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)
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return
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}
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defer haystack.Close()
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|
@ -137,61 +160,92 @@ func (ctx Instance) answerHandler(w http.ResponseWriter, req *http.Request) {
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// Look for the answer
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needle := fmt.Sprintf("%d %s", points, answer)
|
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if !anchoredSearch(haystack, needle, 0) {
|
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showPage(w, "Wrong answer", err.Error())
|
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return
|
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}
|
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|
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if err := ctx.AwardPoints(teamid, category, points); err != nil {
|
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showPage(w, "Error awarding points", err.Error())
|
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return
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}
|
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showPage(w, "Points awarded", fmt.Sprintf("%d points for %s!", points, teamid))
|
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}
|
||||
|
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func (ctx Instance) puzzlesHandler(w http.ResponseWriter, req *http.Request) {
|
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puzzles := map[string][]interface{}{}
|
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// v := map[string][]interface{}{"Moo": {1, "0177f85ae895a33e2e7c5030c3dc484e8173e55c"}}
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// j, _ := json.Marshal(v)
|
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|
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for _, category := range ctx.Categories {
|
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log.Print(puzzles, category)
|
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}
|
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}
|
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|
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func (ctx Instance) pointsHandler(w http.ResponseWriter, req *http.Request) {
|
||||
|
||||
}
|
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|
||||
// staticHandler serves up static files.
|
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func (ctx Instance) rootHandler(w http.ResponseWriter, req *http.Request) {
|
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if req.URL.Path == "/" {
|
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showPage(
|
||||
w,
|
||||
"Welcome",
|
||||
`
|
||||
<h2>Register your team</h2>
|
||||
|
||||
<form action="register" action="post">
|
||||
Team ID: <input name="h"> <br>
|
||||
Team name: <input name="n">
|
||||
<input type="submit" value="Register">
|
||||
</form>
|
||||
|
||||
<div>
|
||||
If someone on your team has already registered,
|
||||
proceed to the
|
||||
<a href="puzzles">puzzles overview</a>.
|
||||
</div>
|
||||
`,
|
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respond(
|
||||
w, req, Fail,
|
||||
"Wrong answer",
|
||||
err.Error(),
|
||||
)
|
||||
return
|
||||
}
|
||||
|
||||
http.NotFound(w, req)
|
||||
if err := ctx.AwardPoints(teamid, category, points); err != nil {
|
||||
respond(
|
||||
w, req, Error,
|
||||
"Error awarding points",
|
||||
err.Error(),
|
||||
)
|
||||
return
|
||||
}
|
||||
respond(
|
||||
w, req, Success,
|
||||
"Points awarded",
|
||||
fmt.Sprintf("%d points for %s!", points, teamid),
|
||||
)
|
||||
}
|
||||
|
||||
type PuzzleMap struct {
|
||||
Points int `json:"points"`
|
||||
Path string `json:"path"`
|
||||
}
|
||||
|
||||
func (ctx Instance) puzzlesHandler(w http.ResponseWriter, req *http.Request) {
|
||||
w.Header().Set("Content-Type", "application/json")
|
||||
w.WriteHeader(http.StatusOK)
|
||||
|
||||
res := map[string][]PuzzleMap{}
|
||||
for catName, mb := range ctx.Categories {
|
||||
mf, err := mb.Open("map.txt")
|
||||
if err != nil {
|
||||
log.Print(err)
|
||||
}
|
||||
defer mf.Close()
|
||||
|
||||
pm := make([]PuzzleMap, 0, 30)
|
||||
scanner := bufio.NewScanner(mf)
|
||||
for scanner.Scan() {
|
||||
line := scanner.Text()
|
||||
parts := strings.Split(line, " ")
|
||||
if len(parts) != 2 {
|
||||
continue
|
||||
}
|
||||
pointval, err := strconv.Atoi(parts[0])
|
||||
if err != nil {
|
||||
log.Print(err)
|
||||
continue
|
||||
}
|
||||
dir := parts[1]
|
||||
|
||||
pm = append(pm, PuzzleMap{pointval, dir})
|
||||
log.Print(pm)
|
||||
}
|
||||
|
||||
res[catName] = pm
|
||||
log.Print(res)
|
||||
}
|
||||
jres, _ := json.Marshal(res)
|
||||
w.Write(jres)
|
||||
}
|
||||
|
||||
func (ctx Instance) pointsHandler(w http.ResponseWriter, req *http.Request) {
|
||||
log := ctx.PointsLog()
|
||||
jlog, err := json.Marshal(log)
|
||||
if err != nil {
|
||||
http.Error(w, err.Error(), http.StatusInternalServerError)
|
||||
return
|
||||
}
|
||||
|
||||
w.Header().Set("Content-Type", "application/json")
|
||||
w.WriteHeader(http.StatusOK)
|
||||
|
||||
w.Write(jlog)
|
||||
}
|
||||
|
||||
func (ctx Instance) staticHandler(w http.ResponseWriter, req *http.Request) {
|
||||
ServeStatic(w, req, ctx.ResourcesDir)
|
||||
}
|
||||
|
||||
func (ctx Instance) BindHandlers(mux *http.ServeMux) {
|
||||
mux.HandleFunc(ctx.Base + "/", ctx.rootHandler)
|
||||
mux.HandleFunc(ctx.Base+"/", ctx.staticHandler)
|
||||
mux.HandleFunc(ctx.Base+"/register", ctx.registerHandler)
|
||||
mux.HandleFunc(ctx.Base+"/token", ctx.tokenHandler)
|
||||
mux.HandleFunc(ctx.Base+"/answer", ctx.answerHandler)
|
||||
|
|
|
|||
|
|
@ -1,28 +1,31 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"os"
|
||||
"log"
|
||||
"bufio"
|
||||
"fmt"
|
||||
"time"
|
||||
"io/ioutil"
|
||||
"log"
|
||||
"os"
|
||||
"path"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
type Instance struct {
|
||||
Base string
|
||||
MothballDir string
|
||||
StateDir string
|
||||
ResourcesDir string
|
||||
Categories map[string]*Mothball
|
||||
}
|
||||
|
||||
func NewInstance(base, mothballDir, stateDir string) (*Instance, error) {
|
||||
func NewInstance(base, mothballDir, stateDir, resourcesDir string) (*Instance, error) {
|
||||
ctx := &Instance{
|
||||
Base: strings.TrimRight(base, "/"),
|
||||
MothballDir: mothballDir,
|
||||
StateDir: stateDir,
|
||||
ResourcesDir: resourcesDir,
|
||||
Categories: map[string]*Mothball{},
|
||||
}
|
||||
|
||||
// Roll over and die if directories aren't even set up
|
||||
|
|
@ -33,15 +36,30 @@ func NewInstance(base, mothballDir, stateDir string) (*Instance, error) {
|
|||
return nil, err
|
||||
}
|
||||
|
||||
ctx.Initialize()
|
||||
ctx.MaybeInitialize()
|
||||
|
||||
return ctx, nil
|
||||
}
|
||||
|
||||
func (ctx *Instance) Initialize () {
|
||||
// Make sure points directories exist
|
||||
func (ctx *Instance) MaybeInitialize() {
|
||||
// Only do this if it hasn't already been done
|
||||
if _, err := os.Stat(ctx.StatePath("initialized")); err == nil {
|
||||
return
|
||||
}
|
||||
log.Print("initialized file missing, re-initializing")
|
||||
|
||||
// Remove any extant control and state files
|
||||
os.Remove(ctx.StatePath("until"))
|
||||
os.Remove(ctx.StatePath("disabled"))
|
||||
os.Remove(ctx.StatePath("points.log"))
|
||||
os.RemoveAll(ctx.StatePath("points.tmp"))
|
||||
os.RemoveAll(ctx.StatePath("points.new"))
|
||||
os.RemoveAll(ctx.StatePath("teams"))
|
||||
|
||||
// Make sure various subdirectories exist
|
||||
os.Mkdir(ctx.StatePath("points.tmp"), 0755)
|
||||
os.Mkdir(ctx.StatePath("points.new"), 0755)
|
||||
os.Mkdir(ctx.StatePath("teams"), 0755)
|
||||
|
||||
// Preseed available team ids if file doesn't exist
|
||||
if f, err := os.OpenFile(ctx.StatePath("teamids.txt"), os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0644); err == nil {
|
||||
|
|
@ -51,10 +69,13 @@ func (ctx *Instance) Initialize () {
|
|||
}
|
||||
}
|
||||
|
||||
if f, err := os.OpenFile(ctx.StatePath("initialized"), os.O_WRONLY | os.O_CREATE | os.O_EXCL, 0644); err == nil {
|
||||
defer f.Close()
|
||||
fmt.Println("Remove this file to reinitialize the contest")
|
||||
// Create initialized file that signals whether we're set up
|
||||
f, err := os.OpenFile(ctx.StatePath("initialized"), os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0644)
|
||||
if err != nil {
|
||||
log.Print(err)
|
||||
}
|
||||
defer f.Close()
|
||||
fmt.Fprintln(f, "Remove this file to reinitialize the contest")
|
||||
}
|
||||
|
||||
func (ctx Instance) MothballPath(parts ...string) string {
|
||||
|
|
@ -67,7 +88,6 @@ func (ctx *Instance) StatePath(parts ...string) string {
|
|||
return path.Join(ctx.StateDir, tail)
|
||||
}
|
||||
|
||||
|
||||
func (ctx *Instance) PointsLog() []Award {
|
||||
var ret []Award
|
||||
|
||||
|
|
|
|||
|
|
@ -1,16 +1,19 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"log"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"time"
|
||||
"log"
|
||||
"os"
|
||||
"strings"
|
||||
"fmt"
|
||||
"time"
|
||||
)
|
||||
|
||||
// maintenance runs
|
||||
func (ctx *Instance) Tidy() {
|
||||
// Do they want to reset everything?
|
||||
ctx.MaybeInitialize()
|
||||
|
||||
// Skip if we've been disabled
|
||||
if _, err := os.Stat(ctx.StatePath("disabled")); err == nil {
|
||||
log.Print("disabled file found, suspending maintenance")
|
||||
|
|
@ -50,6 +53,7 @@ func (ctx *Instance) Tidy() {
|
|||
log.Printf("Error opening %s: %s", filepath, err)
|
||||
continue
|
||||
}
|
||||
log.Printf("New category: %s", filename)
|
||||
ctx.Categories[categoryName] = mb
|
||||
}
|
||||
}
|
||||
|
|
@ -95,8 +99,6 @@ func (ctx *Instance) CollectPoints() {
|
|||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
// maintenance is the goroutine that runs a periodic maintenance task
|
||||
func (ctx *Instance) Maintenance(maintenanceInterval time.Duration) {
|
||||
for ; ; time.Sleep(maintenanceInterval) {
|
||||
|
|
|
|||
|
|
@ -28,11 +28,11 @@ func OpenMothball(filename string) (*Mothball, error) {
|
|||
return &m, nil
|
||||
}
|
||||
|
||||
func (m *Mothball) Close() (error) {
|
||||
func (m *Mothball) Close() error {
|
||||
return m.zf.Close()
|
||||
}
|
||||
|
||||
func (m *Mothball) Refresh() (error) {
|
||||
func (m *Mothball) Refresh() error {
|
||||
info, err := os.Stat(m.filename)
|
||||
if err != nil {
|
||||
return err
|
||||
|
|
|
|||
30
src/mothd.go
30
src/mothd.go
|
|
@ -2,34 +2,11 @@ package main
|
|||
|
||||
import (
|
||||
"flag"
|
||||
"fmt"
|
||||
"log"
|
||||
"net/http"
|
||||
"time"
|
||||
)
|
||||
|
||||
func showPage(w http.ResponseWriter, title string, body string) {
|
||||
w.WriteHeader(http.StatusOK)
|
||||
|
||||
fmt.Fprintf(w, "<!DOCTYPE html>")
|
||||
fmt.Fprintf(w, "<html><head>")
|
||||
fmt.Fprintf(w, "<title>%s</title>", title)
|
||||
fmt.Fprintf(w, "<link rel=\"stylesheet\" href=\"static/style.css\">")
|
||||
fmt.Fprintf(w, "<meta name=\"viewport\" content=\"width=device-width\"></head>")
|
||||
fmt.Fprintf(w, "<link rel=\"icon\" href=\"res/luna-moth.svg\" type=\"image/svg+xml\">")
|
||||
fmt.Fprintf(w, "<link rel=\"icon\" href=\"res/luna-moth.png\" type=\"image/png\">")
|
||||
fmt.Fprintf(w, "<body><h1>%s</h1>", title)
|
||||
fmt.Fprintf(w, "<section>%s</section>", body)
|
||||
fmt.Fprintf(w, "<nav>")
|
||||
fmt.Fprintf(w, "<ul>")
|
||||
fmt.Fprintf(w, "<li><a href=\"static/puzzles.html\">Puzzles</a></li>")
|
||||
fmt.Fprintf(w, "<li><a href=\"static/scoreboard.html\">Scoreboard</a></li>")
|
||||
fmt.Fprintf(w, "</ul>")
|
||||
fmt.Fprintf(w, "</nav>")
|
||||
fmt.Fprintf(w, "</body></html>")
|
||||
}
|
||||
|
||||
|
||||
func logRequest(handler http.Handler) http.Handler {
|
||||
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
log.Printf("HTTP %s %s %s\n", r.RemoteAddr, r.Method, r.URL)
|
||||
|
|
@ -57,6 +34,11 @@ func main() {
|
|||
"/moth/state",
|
||||
"Path to write state",
|
||||
)
|
||||
resourcesDir := flag.String(
|
||||
"resources",
|
||||
"/moth/resources",
|
||||
"Path to static resources (HTML, images, css, ...)",
|
||||
)
|
||||
maintenanceInterval := flag.Duration(
|
||||
"maint",
|
||||
20*time.Second,
|
||||
|
|
@ -73,7 +55,7 @@ func main() {
|
|||
log.Fatal(err)
|
||||
}
|
||||
|
||||
ctx, err := NewInstance(*base, *mothballDir, *stateDir)
|
||||
ctx, err := NewInstance(*base, *mothballDir, *stateDir, *resourcesDir)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,237 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"io"
|
||||
"net/http"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// anchoredSearch looks for needle in r,
|
||||
// skipping the first skip space-delimited words
|
||||
func anchoredSearch(r io.Reader, needle string, skip int) bool {
|
||||
scanner := bufio.NewScanner(r)
|
||||
for scanner.Scan() {
|
||||
line := scanner.Text()
|
||||
parts := strings.SplitN(line, " ", skip+1)
|
||||
if (len(parts) > skip) && (parts[skip] == needle) {
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
return false
|
||||
}
|
||||
|
||||
// anchoredSearchFile performs an anchoredSearch on a given filename
|
||||
func anchoredSearchFile(filename string, needle string, skip int) bool {
|
||||
r, err := os.Open(filename)
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
defer r.Close()
|
||||
|
||||
return anchoredSearch(r, needle, skip)
|
||||
}
|
||||
|
||||
type Status int
|
||||
|
||||
const (
|
||||
Success = iota
|
||||
Fail
|
||||
Error
|
||||
)
|
||||
|
||||
// ShowJSend renders a JSend response to w
|
||||
func ShowJSend(w http.ResponseWriter, status Status, short string, description string) {
|
||||
w.Header().Set("Content-Type", "application/json")
|
||||
w.WriteHeader(http.StatusOK) // RFC2616 makes it pretty clear that 4xx codes are for the user-agent
|
||||
|
||||
statusStr := ""
|
||||
switch status {
|
||||
case Success:
|
||||
statusStr = "success"
|
||||
case Fail:
|
||||
statusStr = "fail"
|
||||
default:
|
||||
statusStr = "error"
|
||||
}
|
||||
|
||||
jshort, _ := json.Marshal(short)
|
||||
jdesc, _ := json.Marshal(description)
|
||||
fmt.Fprintf(
|
||||
w,
|
||||
`{"status":"%s","data":{"short":%s,"description":%s}}"`,
|
||||
statusStr, jshort, jdesc,
|
||||
)
|
||||
}
|
||||
|
||||
// ShowHtml delevers an HTML response to w
|
||||
func ShowHtml(w http.ResponseWriter, status Status, title string, body string) {
|
||||
w.Header().Set("Content-Type", "text/html; charset=utf-8")
|
||||
w.WriteHeader(http.StatusOK)
|
||||
|
||||
statusStr := ""
|
||||
switch status {
|
||||
case Success:
|
||||
statusStr = "Success"
|
||||
case Fail:
|
||||
statusStr = "Fail"
|
||||
default:
|
||||
statusStr = "Error"
|
||||
}
|
||||
|
||||
fmt.Fprintf(w, "<!DOCTYPE html>")
|
||||
fmt.Fprintf(w, "<html><head>")
|
||||
fmt.Fprintf(w, "<title>%s</title>", title)
|
||||
fmt.Fprintf(w, "<link rel=\"stylesheet\" href=\"basic.css\">")
|
||||
fmt.Fprintf(w, "<meta name=\"viewport\" content=\"width=device-width\"></head>")
|
||||
fmt.Fprintf(w, "<link rel=\"icon\" href=\"res/icon.svg\" type=\"image/svg+xml\">")
|
||||
fmt.Fprintf(w, "<link rel=\"icon\" href=\"res/icon.png\" type=\"image/png\">")
|
||||
fmt.Fprintf(w, "<body><h1 class=\"%s\">%s</h1>", statusStr, title)
|
||||
fmt.Fprintf(w, "<section>%s</section>", body)
|
||||
fmt.Fprintf(w, "<nav>")
|
||||
fmt.Fprintf(w, "<ul>")
|
||||
fmt.Fprintf(w, "<li><a href=\"puzzles.html\">Puzzles</a></li>")
|
||||
fmt.Fprintf(w, "<li><a href=\"scoreboard.html\">Scoreboard</a></li>")
|
||||
fmt.Fprintf(w, "</ul>")
|
||||
fmt.Fprintf(w, "</nav>")
|
||||
fmt.Fprintf(w, "</body></html>")
|
||||
}
|
||||
|
||||
// staticStylesheet serves up a basic stylesheet.
|
||||
// This is designed to be usable on small touchscreens (like mobile phones)
|
||||
func staticStylesheet(w http.ResponseWriter) {
|
||||
w.Header().Set("Content-Type", "text/css")
|
||||
w.WriteHeader(http.StatusOK)
|
||||
|
||||
fmt.Fprint(
|
||||
w,
|
||||
`
|
||||
/* http://paletton.com/#uid=63T0u0k7O9o3ouT6LjHih7ltq4c */
|
||||
body {
|
||||
font-family: sans-serif;
|
||||
max-width: 40em;
|
||||
background: #282a33;
|
||||
color: #f6efdc;
|
||||
}
|
||||
a:any-link {
|
||||
color: #8b969a;
|
||||
}
|
||||
h1 {
|
||||
background: #5e576b;
|
||||
color: #9e98a8;
|
||||
}
|
||||
h1.Fail, h1.Error {
|
||||
background: #3a3119;
|
||||
color: #ffcc98;
|
||||
}
|
||||
h1.Fail:before {
|
||||
content: "Fail: ";
|
||||
}
|
||||
h1.Error:before {
|
||||
content: "Error: ";
|
||||
}
|
||||
p {
|
||||
margin: 1em 0em;
|
||||
}
|
||||
form, pre {
|
||||
margin: 1em;
|
||||
}
|
||||
input {
|
||||
padding: 0.6em;
|
||||
margin: 0.2em;
|
||||
}
|
||||
li {
|
||||
margin: 0.5em 0em;
|
||||
}
|
||||
`,
|
||||
)
|
||||
}
|
||||
|
||||
// staticIndex serves up a basic landing page
|
||||
func staticIndex(w http.ResponseWriter) {
|
||||
ShowHtml(
|
||||
w, Success,
|
||||
"Welcome",
|
||||
`
|
||||
<h2>Register your team</h2>
|
||||
|
||||
<form action="register" action="post">
|
||||
Team ID: <input name="id"> <br>
|
||||
Team name: <input name="name">
|
||||
<input type="submit" value="Register">
|
||||
</form>
|
||||
|
||||
<p>
|
||||
If someone on your team has already registered,
|
||||
proceed to the
|
||||
<a href="puzzles.html">puzzles overview</a>.
|
||||
</p>
|
||||
`,
|
||||
)
|
||||
}
|
||||
|
||||
func staticScoreboard(w http.ResponseWriter) {
|
||||
ShowHtml(
|
||||
w, Success,
|
||||
"Scoreboard",
|
||||
"XXX: This would be the scoreboard",
|
||||
)
|
||||
}
|
||||
|
||||
func staticPuzzles(w http.ResponseWriter) {
|
||||
ShowHtml(
|
||||
w, Success,
|
||||
"Puzzles",
|
||||
"XXX: This would be the puzzles overview",
|
||||
)
|
||||
}
|
||||
|
||||
func tryServeFile(w http.ResponseWriter, req *http.Request, path string) bool {
|
||||
f, err := os.Open(path)
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
defer f.Close()
|
||||
|
||||
d, err := f.Stat()
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
|
||||
http.ServeContent(w, req, path, d.ModTime(), f)
|
||||
return true
|
||||
}
|
||||
|
||||
func ServeStatic(w http.ResponseWriter, req *http.Request, resourcesDir string) {
|
||||
path := req.URL.Path
|
||||
if strings.Contains(path, "..") {
|
||||
http.Error(w, "Invalid URL path", http.StatusBadRequest)
|
||||
return
|
||||
}
|
||||
if path == "/" {
|
||||
path = "/index.html"
|
||||
}
|
||||
|
||||
fpath := filepath.Join(resourcesDir, path)
|
||||
if tryServeFile(w, req, fpath) {
|
||||
return
|
||||
}
|
||||
|
||||
switch path {
|
||||
case "/basic.css":
|
||||
staticStylesheet(w)
|
||||
case "/index.html":
|
||||
staticIndex(w)
|
||||
case "/scoreboard.html":
|
||||
staticScoreboard(w)
|
||||
case "/puzzles.html":
|
||||
staticPuzzles(w)
|
||||
default:
|
||||
http.NotFound(w, req)
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue