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moth/tools/devel-server.py

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Python
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#!/usr/bin/env python3
import glob
import html
import http.server
import io
import mistune
import moth
import os
import pathlib
import shutil
import socketserver
import sys
import traceback
try:
from http.server import HTTPStatus
except ImportError:
class HTTPStatus:
OK = (200, 'OK', 'Request fulfilled, document follows')
NOT_FOUND = (404, 'Not Found', 'Nothing matches the given URI')
INTERNAL_SERVER_ERROR = (500, 'Internal Server Error', 'Server got itself in trouble')
# XXX: This will eventually cause a problem. Do something more clever here.
seed = 1
def page(title, body):
return """<!DOCTYPE html>
<html>
<head>
<title>{}</title>
<link rel="stylesheet" href="/files/src/www/res/style.css">
</head>
<body>
<div id="preview" class="terminal">
{}
</div>
</body>
</html>""".format(title, body)
def mdpage(body):
try:
title, _ = body.split('\n', 1)
except ValueError:
title = "Result"
title = title.lstrip("#")
title = title.strip()
return page(title, mistune.markdown(body))
class ThreadingServer(socketserver.ThreadingMixIn, http.server.HTTPServer):
pass
class MothHandler(http.server.SimpleHTTPRequestHandler):
def handle_one_request(self):
try:
super().handle_one_request()
except:
tbtype, value, tb = sys.exc_info()
tblist = traceback.format_tb(tb, None) + traceback.format_exception_only(tbtype, value)
payload = ("Traceback (most recent call last)\n" +
"".join(tblist[:-1]) +
tblist[-1]).encode('utf-8')
self.send_response(HTTPStatus.INTERNAL_SERVER_ERROR)
self.send_header("Content-Type", "text/plain; charset=utf-8")
self.send_header("Content-Length", payload)
self.end_headers()
self.wfile.write(payload)
def do_GET(self):
if self.path == "/":
self.serve_front()
elif self.path.startswith("/puzzles"):
self.serve_puzzles()
elif self.path.startswith("/files"):
self.serve_file(self.translate_path(self.path))
else:
self.send_error(HTTPStatus.NOT_FOUND, "File not found")
def translate_path(self, path):
if path.startswith('/files'):
path = path[7:]
return super().translate_path(path)
def serve_front(self):
body = """
MOTH Development Server Front Page
====================
Yo, it's the front page.
There's stuff you can do here:
* [Available puzzles](/puzzles)
* [Raw filesystem view](/files/)
* [Documentation](/files/docs/)
* [Instructions](/files/docs/devel-server.md) for using this server
If you use this development server to run a contest,
you are a fool.
"""
payload = mdpage(body).encode('utf-8')
self.send_response(HTTPStatus.OK)
self.send_header("Content-Type", "text/html; charset=utf-8")
self.send_header("Content-Length", len(payload))
self.end_headers()
self.wfile.write(payload)
def serve_puzzles(self):
body = io.StringIO()
path = self.path.rstrip('/')
parts = path.split("/")
title = None
cat = None
try:
fpath = os.path.join("puzzles", parts[2])
cat = moth.Category(path, seed)
puzzle = cat.puzzle(int(parts[3]))
except:
pass
if not cat:
title = "Puzzle Categories"
body.write("<ul>")
for i in glob.glob(os.path.join("puzzles", "*", "")):
body.write('<li><a href="{}">{}</a></li>'.format(i, i))
body.write("</ul>")
elif not puzzle:
# List all point values in a category
title = "Puzzles in category `{}`".format(parts[2])
body.write("<ul>")
for points in cat.pointvals:
body.write('<li><a href="/puzzles/{cat}{points}">puzzles/{cat}{points}</a></li>'.format(cat=parts[2], points=points))
body.write("</ul>")
if len(parts) == 4:
# Serve up a puzzle
title = "{} puzzle {}".format(parts[2], parts[3])
body.write("<h2>Author</h2><p>{}</p>".format(puzzle.author))
body.write("<h2>Summary</h2><p>{}</p>".format(puzzle.summary))
body.write("<h2>Body</h2>")
body.write(puzzle.html_body())
body.write("<h2>Answers</h2>")
body.write("<ul>")
for a in puzzle.answers:
body.write("<li><code>{}</code></li>".format(html.escape(a)))
body.write("</ul>")
body.write("<h2>Files</h2>")
body.write("<ul>")
for f in puzzle.files:
body.write('<li><a href="/{cat}/{points}/{filename}">{filename}</a></li>'
.format(cat=parts[2], points=puzzle.points, filename=f.name))
body.write("</ul>")
body.write("<h2>Debug Log</h2>")
body.write('<ul class="log">')
for l in puzzle.logs:
body.write("<li>{}</li>".format(html.escape(l)))
body.write("</ul>")
elif len(parts) == 5:
# Serve up a puzzle file
try:
pfile = puzzle.files[parts[4]]
except KeyError:
self.send_error(HTTPStatus.NOT_FOUND, "File not found")
return
ctype = self.guess_type(pfile.name)
self.send_response(HTTPStatus.OK)
self.send_header("Content-Type", ctype)
self.end_headers()
shutil.copyfileobj(pfile.stream, self.wfile)
return
payload = page(title, body.getvalue()).encode('utf-8')
self.send_response(HTTPStatus.OK)
self.send_header("Content-Type", "text/html; charset=utf-8")
self.send_header("Content-Length", len(payload))
self.end_headers()
self.wfile.write(payload)
def serve_file(self, path):
lastmod = None
fspath = pathlib.Path(path)
if fspath.is_dir():
ctype = "text/html; charset=utf-8"
payload = self.list_directory(path)
# it sends headers but not body
shutil.copyfileobj(payload, self.wfile)
else:
ctype = self.guess_type(path)
try:
payload = fspath.read_bytes()
except OSError:
self.send_error(HTTPStatus.NOT_FOUND, "File not found")
return
if fspath.endswith(".md"):
ctype = "text/html; charset=utf-8"
content = mdpage(payload.decode('utf-8'))
payload = content.encode('utf-8')
try:
fs = fspath.stat()
lastmod = self.date_time_string(fs.st_mtime)
except:
pass
self.send_response(HTTPStatus.OK)
self.send_header("Content-Type", ctype)
self.send_header("Content-Length", len(payload))
if lastmod:
self.send_header("Last-Modified", lastmod)
self.end_headers()
self.wfile.write(payload)
def run(address=('localhost', 8080)):
httpd = ThreadingServer(address, MothHandler)
print("=== Listening on http://{}:{}/".format(address[0], address[1]))
httpd.serve_forever()
if __name__ == '__main__':
run()
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