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Saving data via Javascript, evading the Avans firewall (hopefully)

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Paul Wagener 11 years ago
parent db59273825
commit 347ead3536
6 changed files with 60 additions and 20 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 2
      securityquiz/urls.py
  2. 4
      static/js/jquery-2.1.0.min.js
  3. 1
      static/js/jquery.base64.min.js
  4. 33
      static/js/quiz.js
  5. 8
      templates/base.html
  6. 32
      views.py

2
securityquiz/urls.py
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@ -7,7 +7,7 @@ urlpatterns = patterns('',
# Examples:
url(r'^callback$', 'views.avans_callback'),
url(r'^logout$', 'views.avans_logout'),
url(r'^pull$', 'views.pull'),
url(r'^admin/', include(admin.site.urls)),
url(r'^save$', 'views.save'),
url(r'^(.*)$', 'views.home', name='home'),
)

4
static/js/jquery-2.1.0.min.js vendored
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File diff suppressed because one or more lines are too long

1
static/js/jquery.base64.min.js vendored
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@ -0,0 +1 @@
"use strict";jQuery.base64=(function($){var _PADCHAR="=",_ALPHA="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",_VERSION="1.0";function _getbyte64(s,i){var idx=_ALPHA.indexOf(s.charAt(i));if(idx===-1){throw"Cannot decode base64"}return idx}function _decode(s){var pads=0,i,b10,imax=s.length,x=[];s=String(s);if(imax===0){return s}if(imax%4!==0){throw"Cannot decode base64"}if(s.charAt(imax-1)===_PADCHAR){pads=1;if(s.charAt(imax-2)===_PADCHAR){pads=2}imax-=4}for(i=0;i<imax;i+=4){b10=(_getbyte64(s,i)<<18)|(_getbyte64(s,i+1)<<12)|(_getbyte64(s,i+2)<<6)|_getbyte64(s,i+3);x.push(String.fromCharCode(b10>>16,(b10>>8)&255,b10&255))}switch(pads){case 1:b10=(_getbyte64(s,i)<<18)|(_getbyte64(s,i+1)<<12)|(_getbyte64(s,i+2)<<6);x.push(String.fromCharCode(b10>>16,(b10>>8)&255));break;case 2:b10=(_getbyte64(s,i)<<18)|(_getbyte64(s,i+1)<<12);x.push(String.fromCharCode(b10>>16));break}return x.join("")}function _getbyte(s,i){var x=s.charCodeAt(i);if(x>255){throw"INVALID_CHARACTER_ERR: DOM Exception 5"}return x}function _encode(s){if(arguments.length!==1){throw"SyntaxError: exactly one argument required"}s=String(s);var i,b10,x=[],imax=s.length-s.length%3;if(s.length===0){return s}for(i=0;i<imax;i+=3){b10=(_getbyte(s,i)<<16)|(_getbyte(s,i+1)<<8)|_getbyte(s,i+2);x.push(_ALPHA.charAt(b10>>18));x.push(_ALPHA.charAt((b10>>12)&63));x.push(_ALPHA.charAt((b10>>6)&63));x.push(_ALPHA.charAt(b10&63))}switch(s.length-imax){case 1:b10=_getbyte(s,i)<<16;x.push(_ALPHA.charAt(b10>>18)+_ALPHA.charAt((b10>>12)&63)+_PADCHAR+_PADCHAR);break;case 2:b10=(_getbyte(s,i)<<16)|(_getbyte(s,i+1)<<8);x.push(_ALPHA.charAt(b10>>18)+_ALPHA.charAt((b10>>12)&63)+_ALPHA.charAt((b10>>6)&63)+_PADCHAR);break}return x.join("")}return{decode:_decode,encode:_encode,VERSION:_VERSION}}(jQuery));

33
static/js/quiz.js
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@ -0,0 +1,33 @@
$(function() {
var changed = false;
$('.question-input').change(function() {
changed = true;
});
$('#save-button').click(function() {
var data = $.base64.encode($('#form-quiz').serialize())
console.log(data);
$.post('save', data, function(data) {
if(data == 'ok') {
$('#js-message').text('Antwoorden zijn opgeslagen').slideDown().delay(1000).slideUp();
changed = false;
} else {
alert('Er is iets misgegaan bij het opslaan, bewaar je antwoorden lokaal voordat je deze tab afsluit');
}
});
return false;
});
window.onbeforeunload = function() {
if(changed) {
return 'Er zijn niet opgeslagen wijzigingen. Weet je zeker dat je de pagina wilt verlaten?';
}
}
});

8
templates/base.html
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@ -4,9 +4,12 @@
<title>Security 1</title>
<link href="/static/css/bootstrap.min.css" rel="stylesheet" type="text/css">
<link href="/static/css/style.css" rel="stylesheet" type="text/css">
<script type="text/javascript" src="/static/js/jquery-2.1.0.min.js"></script>
<script type="text/javascript" src="/static/js/jquery.base64.min.js"></script>
<script type="text/javascript" src="/static/js/quiz.js"></script>
</head>
<body>
<form method="POST">
<form method="POST" id="form-quiz">
{% csrf_token %}
<div class="row-fluid">
@ -19,7 +22,8 @@
</ul>
<a href="/logout" class="btn">Uitloggen</a>
<button class="btn-primary" type="submit">Opslaan</button>
<button class="btn-primary" type="submit" id="save-button">Opslaan</button>
<div class="alert alert-info" id="js-message" style="display: none;"></div>
</div>
<div id="quiz" class="span8 offset2">

32
views.py
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@ -2,11 +2,12 @@ from django.shortcuts import render
from django.http import HttpResponse
from django.http import HttpResponseRedirect
from django.http import HttpResponseNotFound
from django.views.decorators.csrf import csrf_exempt
from django.contrib.auth import authenticate, login, logout
from django.contrib.auth.models import User
from django.contrib import messages
from quiz.models import Answer
import oauth2 as oauth, cgi, json, git, os, signal
import oauth2 as oauth, cgi, json, base64, urlparse
import securityquiz.secrets as secrets
import securityquiz.settings as settings
@ -64,29 +65,26 @@ def avans_logout(request):
logout(request)
return HttpResponse('Je bent nu uitgelogd... <a href="/">Opnieuw inloggen</a>')
def pull(request):
if request.method == 'POST':
g = git.cmd.Git(settings.PROJECT_PATH)
output = str(g.pull())
# Reload source code
os.kill(os.getpid(), signal.SIGINT)
return HttpResponse(output)
else:
return HttpResponseRedirect('/')
@csrf_exempt
def save(request):
data = dict(urlparse.parse_qsl(base64.b64decode(request.body), True))
print data
save_data(data, request.user)
return HttpResponse('ok')
def save_data(data, user):
for key in data:
if key.startswith('answer'):
answer, created = Answer.objects.get_or_create(user=user, question=key)
answer.string = data[key]
answer.save()
def home(request, url):
if not request.user.is_authenticated():
return avans_login(request)
if request.method == 'POST':
for key in request.POST:
if key.startswith('answer'):
answer, created = Answer.objects.get_or_create(user=request.user, question=key)
answer.string = request.POST[key]
answer.save()
save_data(request.POST, request.user)
messages.add_message(request, messages.INFO, 'Je antwoorden zijn opgeslagen')
return HttpResponseRedirect('/' + url)

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