boxespy/scripts/boxesserver

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#!/usr/bin/env python3
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# Copyright (C) 2016-2017 Florian Festi
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import sys
import argparse
import cgi
import tempfile
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import os.path
import threading
import time
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import codecs
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import mimetypes
import re
import markdown
import gettext
import glob
# Python 2 vs Python 3 compat
try:
from urllib.parse import unquote_plus, quote
except ImportError:
from urllib import unquote_plus, quote
try:
from urllib.parse import parse_qs
except ImportError:
from cgi import parse_qs
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from wsgiref.util import setup_testing_defaults
from wsgiref.simple_server import make_server
import wsgiref.util
try:
import boxes.generators
except ImportError:
sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
import boxes.generators
class FileChecker(threading.Thread):
def __init__(self, files=[], checkmodules=True):
super(FileChecker, self).__init__()
self.checkmodules = checkmodules
self.timestamps = {}
for path in files:
self.timestamps[path] = os.stat(path).st_mtime
if checkmodules:
self._addModules()
def _addModules(self):
for name, module in sys.modules.items():
path = getattr(module, "__file__", None)
if not path:
continue
if path not in self.timestamps:
self.timestamps[path] = os.stat(path).st_mtime
def filesOK(self):
if self.checkmodules:
self._addModules()
for path, timestamp in self.timestamps.items():
try:
if os.stat(path).st_mtime != timestamp:
return False
except FileNotFoundError:
return False
return True
def run(self):
while True:
if not self.filesOK():
os.execv(__file__, sys.argv)
time.sleep(1)
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class ArgumentParserError(Exception): pass
class ThrowingArgumentParser(argparse.ArgumentParser):
def error(self, message):
raise ArgumentParserError(message)
boxes.ArgumentParser = ThrowingArgumentParser # Evil hack
class BServer:
lang_re = re.compile(r"([a-z]{2,3}(-[-a-zA-Z0-9]*)?)\s*(;\s*q=(\d\.?\d*))?")
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def __init__(self):
self.boxes = {b.__name__ : b for b in boxes.generators.getAllBoxGenerators().values() if b.webinterface}
self.boxes['TrayLayout2'] = boxes.generators.traylayout.TrayLayout2
self.groups = boxes.generators.ui_groups
self.groups_by_name = boxes.generators.ui_groups_by_name
for name, box in self.boxes.items():
self.groups_by_name.get(box.ui_group,
self.groups_by_name["Misc"]).add(box)
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self.staticdir = os.path.join(os.path.dirname(__file__), '../static/')
self._languages = None
def getLanguages(self, domain=None, localedir=None):
if self._languages is not None:
return self._languages
self._languages = []
domain = "boxes.py"
for localedir in ["locale", gettext._default_localedir]:
files = glob.glob(os.path.join(localedir, '*', 'LC_MESSAGES', '%s.mo' % domain))
self._languages.extend([file.split(os.path.sep)[-3] for file in files])
self._languages.sort()
return self._languages
def getLanguage(self, args, accept_language):
lang = None
langs = []
for i, arg in enumerate(args):
if arg.startswith("language="):
lang = arg[len("language="):]
del args[i]
break
if lang:
try:
return gettext.translation('boxes.py', localedir='locale',
languages=[lang])
except OSError:
pass
try:
return gettext.translation('boxes.py', languages=[lang])
except OSError:
pass
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# selected language not found try browser default
languages = accept_language.split(",")
for l in languages:
m = self.lang_re.match(l.strip())
if m:
langs.append((float(m.group(4) or 1.0), m.group(1)))
langs.sort(reverse=True)
langs = [l[1].replace("-", "_") for l in langs]
try:
return gettext.translation('boxes.py', localedir='locale',
languages=langs)
except OSError:
return gettext.translation('boxes.py', languages=langs, fallback=True)
def arg2html(self, a, prefix, defaults={}, _=lambda s:s):
name = a.option_strings[0].replace("-", "")
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if isinstance(a, argparse._HelpAction):
return ""
viewname = name
if prefix and name.startswith(prefix + '_'):
viewname = name[len(prefix)+1:]
default = defaults.get(name, None)
row = """<tr><td>%s</td><td>%%s</td><td>%s</td></tr>\n""" % \
(_(viewname), "" if not a.help else _(a.help))
if (isinstance(a, argparse._StoreAction) and
hasattr(a.type, "html")):
input = a.type.html(name, default or a.default)
elif a.dest == "layout":
val = (default or a.default).split("\n")
input = """<textarea name="%s" cols="%s" rows="%s">%s</textarea>""" % \
(name, max((len(l) for l in val))+10, len(val)+1, default or a.default)
elif a.choices:
options = "\n".join(
("""<option value="%s"%s>%s</option>""" %
(e, ' selected="selected"' if e == (default or a.default) else "",
_(e)) for e in a.choices))
input = """<select name="%s" size="1">\n%s</select>\n""" % (name, options)
else:
input = """<input name="%s" type="text" value="%s">""" % \
(name, default or a.default)
return row % input
scripts = """
<script type="text/javascript">
function showHide(id) {
var e = document.getElementById(id);
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var h = document.getElementById("h-" + id);
if(e.style.display == null || e.style.display == "none") {
e.style.display = "block";
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h.classList.add("open");
} else {
e.style.display = "none";
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h.classList.remove("open");
}
}
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function hideargs() {
for ( i=0; i<%i; i++) {
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showHide(i);
}
}
</script>
"""
def args2html(self, name, box, lang, action="", defaults={}):
_ = lang.gettext
lang_name = lang.info().get('language', None)
if lang_name:
langparam = "?language=" + lang_name
else:
langparam = ""
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result = ["""<!DOCTYPE html>
<html>
<head>
<title>""" + _("Boxes - %s") % _(name), """</title>
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<link rel="icon" type="image/svg+xml" href="static/boxes-logo.svg" sizes="any">
<link rel="shortcut icon" type="image/x-icon" href="static/favicon.ico">
<link rel="stylesheet" href="static/self.css" type="text/css" />
""", self.scripts % (len(box.argparser._action_groups)-3), """
<meta name="flattr:id" content="456799">
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</head>
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<body onload="hideargs()">
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<div class="container" style="background-color: #FFF8EA;">
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<div style="float: left;">
<a href="./""" + langparam + '"><h1>' + _("Boxes.py") + """</h1></a>
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</div>
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<div style="width: 120px; float: right;">
<img alt="self-Logo" src="static/boxes-logo.svg" width="120" >
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</div>
<div>
<div class="clear"></div>
<hr />
<h2 style="margin: 0px 0px 0px 20px;" >""", _(name), """</h2>
<p>""", _(box.__doc__) if box.__doc__ else "", """</p>
<form action="%s" method="GET" target="_blank">
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""" % (action)]
groupid = 0
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for group in box.argparser._action_groups[3:] + box.argparser._action_groups[:3]:
if not group._group_actions:
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continue
if len(group._group_actions) == 1 and isinstance(group._group_actions[0], argparse._HelpAction):
continue
prefix = getattr(group, "prefix", None)
result.append('''<h3 id="h-%s" class="open" onclick="showHide(%s)">%s</h3>\n<table id="%s">\n''' % (groupid, groupid, _(group.title), groupid))
for a in group._group_actions:
if a.dest in ("input", "output"):
continue
result.append(self.arg2html(a, prefix, defaults, _))
result.append("</table>")
groupid += 1
result.append("""
<p><button name="render" value="1">""" + _("Generate") + """</button></p>
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</form>
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</div>
<!--
<div style="width: 5%; float: left;"></div>
<div style="width: 35%; float: left;">
<img alt="sample" src="examples/box.svg" width="300" >
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<span id="sicherheitshinweise">hier kommt dann der AJAX-Inhalt</span>
</div>
-->
<div class="clear"></div>
<hr />
""")
if box.description:
result.append(markdown.markdown(_(box.description)))
result.append("""
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</div>
""" + self.footer(lang) + """</body>
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</html>
""" )
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return (s.encode("utf-8") for s in result)
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def menu(self, lang):
_ = lang.gettext
lang_name = lang.info().get('language', None)
if lang_name:
langparam = "?language=" + lang_name
else:
langparam = ""
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result = ["""<!DOCTYPE html>
<html>
<head>
<title>""" + _("Boxes.py") + """</title>
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<link rel="icon" type="image/svg+xml" href="static/boxes-logo.svg" sizes="any">
<link rel="shortcut icon" type="image/x-icon" href="static/favicon.ico">
<link rel="stylesheet" href="static/self.css" type="text/css" />
<script>
function change(group, img_link){
document.getElementById("sample-"+group).src = img_link;
document.getElementById("sample-"+group).style.height = "auto";
}
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function changeback(group){
document.getElementById("sample-" + group).src= "static/nothing.png";
document.getElementById("sample-" + group).style.height= "0px";
}
</script>""", self.scripts % len(self.groups), """
<meta name="flattr:id" content="456799">
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</head>
<body onload="hideargs()">
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<div class="container" style="background-color: #FFF8EA;">
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<div style="width: 75%; float: left;">
<h1>""" + _("Boxes.py") + """</h1>
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<p>
""" + _("Create boxes and more with a laser cutter!") + """
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</p>
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<p>
""" + _("""
<a href="https://hackaday.io/project/10649-boxespy">Boxes.py</a> is an <a href="https://www.gnu.org/licenses/gpl-3.0.en.html">Open Source</a> box generator written in <a href="https://www.python.org/">Python</a>. It features both finished parametrized generators as well as a Python API for writing your own. It features finger and (flat) dovetail joints, flex cuts, holes and slots for screws, hinges, gears, pulleys and much more.""") + """
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</p>
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</div>
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<div style="width: 25%; float: left;">
<img alt="self-Logo" src="static/boxes-logo.svg" width="250" >
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</div>
<div>
<div class="clear"></div>
<hr />
<div style="width: 100%">
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""" ]
for nr, group in enumerate(self.groups):
result.append('''<h3 id="h-%s" class="open" onclick="showHide('%s')">%s</h3>\n<div id="%s">\n''' % (nr, nr, _(group.title), nr))
result.append("""
<img style="width: 200px;" id="sample-%s" src="static/nothing.png" alt="" />
<ul>\n""" % (group.name))
for box in group.generators:
name = box.__name__
if name in ("TrayLayout2", ):
continue
docs = ""
if box.__doc__:
docs = " - " + _(box.__doc__)
result.append(""" <li onmouseenter="change('%s', 'static/samples/%s-thumb.jpg')" onmouseleave="changeback('%s')"><a href="%s%s">%s</a>%s</li>\n""" % (
group.name, name, group.name, name, langparam, _(name), docs))
result.append("</ul>\n</div>\n")
result.append("""
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</div>
<div style="width: 5%; float: left;"></div>
<div class="clear"></div>
<hr />
</div>
</div>""" + self.footer(lang) + """
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</body>
</html>
""")
return (s.encode("utf-8") for s in result)
def footer(self, lang):
_ = lang.gettext
language = lang.info().get('language', '')
return """
<div class="footer container">
<ul>
<li><form><select name="language" onchange='if(this.value != "%s") { this.form.submit(); }'>""" % language + \
("<option value='' selected></option>" if not language else "") + \
"\n".join(
("<option value='%s' %s>%s</option>" % (l, "selected" if l==language else "", l)
for l in self.getLanguages())) + """
</select></form></li>
<li><a href="https://github.com/florianfesti/boxes">""" + _("Get Source at GitHub") + """</a></li>
<li><a href="https://florianfesti.github.io/boxes/html/index.html">""" + _("Documentation and API Description") + """</a></li>
<li><a href="https://hackaday.io/project/10649-boxespy">""" + _("Hackaday.io Project Page") + """</a></li>
</ul>
</div>
"""
def errorMessage(self, name, e, _):
return [
("""<html>
<head>
<title>""" + _("Error generating %s") % _(name) +
"""</title>
<meta name="flattr:id" content="456799">
</head>
<body>
<h1>""" + _("An error occurred!") + "</h1>" +
"".join(u"<p>%s</p>" % cgi.escape(s) for s in type(u"")(e).split(u"\n")) +
"""
</body>
</html>
""").encode("utf-8") ]
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def serveStatic(self, environ, start_response):
filename = environ["PATH_INFO"][len("/static/"):]
path = os.path.join(self.staticdir, filename)
print(filename, path)
if (not re.match(r"[a-zA-Z0-9_/-]+\.[a-zA-Z0-9]+", filename) or
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not os.path.exists(path)):
start_response("404 Not Found", [('Content-type', 'text/plain')])
return [b"Not found"]
type_, encoding = mimetypes.guess_type(filename)
if encoding is None:
encoding = "utf8"
start_response("200 OK", [('Content-type', "%s; charset=%s" % (type_, encoding))])
f = open(path, 'rb')
return environ['wsgi.file_wrapper'](f, 512*1024)
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def getURL(self, environ):
url = environ['wsgi.url_scheme']+'://'
if environ.get('HTTP_HOST'):
url += environ['HTTP_HOST']
else:
url += environ['SERVER_NAME']
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if environ['wsgi.url_scheme'] == 'https':
if environ['SERVER_PORT'] != '443':
url += ':' + environ['SERVER_PORT']
else:
if environ['SERVER_PORT'] != '80':
url += ':' + environ['SERVER_PORT']
url += quote(environ.get('SCRIPT_NAME', ''))
url += quote(environ.get('PATH_INFO', ''))
if environ.get('QUERY_STRING'):
url += '?' + environ['QUERY_STRING']
return url
def serve(self, environ, start_response):
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if environ["PATH_INFO"].startswith("/static/"):
return self.serveStatic(environ, start_response)
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status = '200 OK'
headers = [('Content-type', 'text/html; charset=utf-8'), ('X-XSS-Protection', '1; mode=block'), ('X-Content-Type-Options', 'nosniff'), ('x-frame-options', 'SAMEORIGIN'), ('Referrer-Policy', 'no-referrer')]
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d = parse_qs(environ['QUERY_STRING'])
name = environ["PATH_INFO"][1:]
args = [unquote_plus(arg) for arg in
environ['QUERY_STRING'].split("&")]
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lang = self.getLanguage(args, environ.get("HTTP_ACCEPT_LANGUAGE", ""))
_ = lang.gettext
box_cls = self.boxes.get(name, None)
if not box_cls:
start_response(status, headers)
return self.menu(lang)
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if name == "TrayLayout2":
box = box_cls(self, webargs=True)
else:
box = box_cls()
if "render=1" not in args:
defaults = { }
for a in args:
kv = a.split('=')
if len(kv) == 2:
k, v = kv
defaults[k] = cgi.escape(v, True)
start_response(status, headers)
return self.args2html(name, box, lang, "./" + name, defaults=defaults)
else:
args = ["--"+ arg for arg in args if arg != "render=1"]
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try:
box.parseArgs(args)
except (ArgumentParserError) as e:
start_response(status, headers)
return self.errorMessage(name, e, _)
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if name == "TrayLayout":
start_response(status, headers)
box.fillDefault(box.x, box.y)
layout2 = boxes.generators.traylayout.TrayLayout2(self, webargs=True)
layout2.argparser.set_defaults(layout=str(box))
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return self.args2html(
name, layout2, lang, action="TrayLayout2")
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if name == "TrayLayout2":
try:
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box.parse(box.layout.split("\n"))
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except Exception as e:
raise
start_response(status, headers)
return self.errorMessage(name, e)
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fd, box.output = tempfile.mkstemp()
box.metadata["url"] = self.getURL(environ)
box.open()
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box.render()
try:
box.close()
except ValueError as e:
start_response("500 Internal Server Error",
[('Content-type', 'text/plain; charset=utf-8')])
return([b"Server Error\n\n", str(e).encode("utf-8")])
http_headers = box.formats.http_headers.get(
box.format,
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[('Content-type', 'application/unknown; charset=utf-8')])[:]
if box.format != "svg":
extension = box.format
if extension == "svg_Ponoko":
extension = "svg"
http_headers.append(('Content-Disposition', 'attachment; filename="%s.%s"' % (box.__class__.__name__, extension)))
start_response(status, http_headers)
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result = open(box.output).readlines()
os.close(fd)
os.remove(box.output)
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return (l.encode("utf-8") for l in result)
if __name__=="__main__":
fc = FileChecker()
fc.start()
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boxserver = BServer()
httpd = make_server('', 8000, boxserver.serve)
print("Serving on port 8000...")
httpd.serve_forever()
else:
application = BServer().serve
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