server.py 12.4 KB
Newer Older
1
from flask import Flask, g, request, url_for, redirect, session, render_template, flash, Response
2
from werkzeug.routing import Rule
3
from functools import wraps
4
from datetime import date, timedelta, datetime, time
5
import threading
6
import os
7

8
app = Flask(__name__)
9

10
11
12
13
14
15
16
17
18
19
def timer_func():
	with app.test_request_context():
		pass # do something
	timer = threading.Timer(60*60, timer_func)
	timer.start()

timer = threading.Timer(0, timer_func)
timer.daemon = True
timer.start()

20
config = app.config
21
22
config['DB_SCHEMA'] = 'db_schema.sql'
config['DB_DATA'] = 'db_example.sql'
23
24
25
config['DB_ENGINE'] = 'sqlite'
config['SQLITE_DB'] = 'db.sqlite'
config['SQLITE_INIT_SCHEMA'] = True
26
config['SQLITE_INIT_DATA'] = False
27
config['DEBUG'] = False
28
config['VIDEOPREFIX'] = 'https://videoag.fsmpi.rwth-aachen.de'
29
30
31
if __name__ == '__main__':
	config['SQLITE_INIT_DATA'] = True
	config['DEBUG'] = True
32
config.from_pyfile('config.py', silent=True)
Julian Rother's avatar
Julian Rother committed
33

34
from db import query, searchquery, ldapauth, ldapget
Julian Rother's avatar
Julian Rother committed
35

36
mod_endpoints = []
Julian Rother's avatar
Julian Rother committed
37

Julian Rother's avatar
Cleanup    
Julian Rother committed
38
@app.template_global()
39
40
41
42
def ismod(*args):
	return ('user' in session)

def mod_required(func):
43
	mod_endpoints.append(func.__name__)
44
45
	@wraps(func)
	def decorator(*args, **kwargs):
46
		if not ismod():
47
48
49
50
51
52
			flash('Diese Funktion ist nur für Moderatoren verfügbar!')
			return redirect(url_for('login', ref=request.url))
		else:
			return func(*args, **kwargs)
	return decorator

53
app.jinja_env.globals['navbar'] = []
54
def register_navbar(name, icon=None):
55
	def wrapper(func):
56
57
58
		endpoint = func.__name__
		app.jinja_env.globals['navbar'].append((endpoint, name, icon,
					not endpoint in mod_endpoints))
59
60
61
		return func
	return wrapper

Julian Rother's avatar
Cleanup    
Julian Rother committed
62
63
64
65
def render_endpoint(endpoint, flashtext=None, **kargs):
	if flashtext:
		flash(flashtext)
	# request.endpoint is used for navbar highlighting
66
	request.url_rule = Rule(request.path, endpoint=endpoint)
Julian Rother's avatar
Cleanup    
Julian Rother committed
67
68
	return app.view_functions[endpoint](**kargs)

69
70
71
72
73
74
75
76
77
78
79
def handle_errors(endpoint, text, code, *errors, **epargs):
	def wrapper(func):
		@wraps(func)
		def decorator(*args, **kwargs):
			try:
				return func(*args, **kwargs)
			except errors:
				return render_endpoint(endpoint, text, **epargs), code
		return decorator
	return wrapper

Julian Rother's avatar
Cleanup    
Julian Rother committed
80
81
@app.errorhandler(404)
def handle_not_found(e):
82
	return render_endpoint('index', 'Diese Seite existiert nicht!'), 404
Julian Rother's avatar
Cleanup    
Julian Rother committed
83

84
@app.route('/')
85
@register_navbar('Home', icon='home')
86
def index():
87
	return render_template('index.html', latestvideos=query('''
88
				SELECT lectures.*, max(videos.time_updated) AS lastvidtime, courses.short, courses.downloadable, courses.title AS coursetitle
89
90
91
				FROM lectures
				LEFT JOIN videos ON (videos.lecture_id = lectures.id)
				LEFT JOIN courses on (courses.id = lectures.course_id)
92
				WHERE (? OR (courses.visible AND courses.listed AND lectures.visible AND videos.visible))
93
94
				GROUP BY videos.lecture_id
				ORDER BY lastvidtime DESC
Andreas Valder's avatar
.    
Andreas Valder committed
95
				LIMIT 6
96
			''', ismod()))
97

98
@app.route('/course')
99
@register_navbar('Videos', icon='film')
Andreas Valder's avatar
Andreas Valder committed
100
def course():
101
102
103
104
	courses = query('SELECT * FROM courses WHERE (? OR (visible AND listed))', ismod())
	for course in courses:
		if course['semester'] == '':
			course['semester'] = 'zeitlos'
Andreas Valder's avatar
Andreas Valder committed
105
	groupedby = request.args.get('groupedby')
Julian Rother's avatar
Cleanup    
Julian Rother committed
106
	if groupedby not in ['title', 'semester', 'organizer']:
Andreas Valder's avatar
Andreas Valder committed
107
		groupedby = 'semester'
108
	return render_template('course.html', courses=courses, groupedby=groupedby)
Andreas Valder's avatar
Andreas Valder committed
109

Andreas Valder's avatar
Andreas Valder committed
110
@app.route('/course/<id>')
111
@app.route('/course/<int:numid>')
112
113
@handle_errors('course', 'Diese Veranstaltung existiert nicht!', 404, IndexError)
def course_id(numid=None, id=None):
114
	if numid:
Andreas Valder's avatar
Andreas Valder committed
115
		courses = query('SELECT * FROM courses WHERE id = ? AND (? OR visible)', numid, ismod())[0]
116
	else:
Andreas Valder's avatar
Andreas Valder committed
117
118
		courses = query('SELECT * FROM courses WHERE handle = ? AND (? OR visible)', id, ismod())[0]
	lectures = query('SELECT * FROM lectures WHERE course_id = ? AND (? OR visible)', courses['id'], ismod())
Andreas Valder's avatar
Andreas Valder committed
119
120
121
122
123
124
125
126
	videos = query('''
			SELECT videos.*, (videos.downloadable AND courses.downloadable) as downloadable, formats.description AS format_description
			FROM videos
			JOIN lectures ON (videos.lecture_id = lectures.id)
			JOIN formats ON (videos.video_format = formats.id)
			JOIN courses ON (lectures.course_id = courses.id)
			WHERE lectures.course_id= ? AND (? OR videos.visible)
			ORDER BY lectures.time, formats.prio DESC
Andreas Valder's avatar
Andreas Valder committed
127
128
			''', courses['id'], ismod())
	return render_template('course_id.html', course=courses, lectures=lectures, videos=videos)
Andreas Valder's avatar
Andreas Valder committed
129

Andreas Valder's avatar
Andreas Valder committed
130
@app.route('/faq')
131
@register_navbar('FAQ', icon='question-sign')
Andreas Valder's avatar
Andreas Valder committed
132
def faq():
133
	return render_template('faq.html')
Andreas Valder's avatar
Andreas Valder committed
134

135
@app.route('/play/<int:id>')
136
@handle_errors('course', 'Diese Vorlesung existiert nicht!', 404, IndexError)
137
def play(id):
138
139
140
141
142
143
	lectures = query('SELECT * FROM lectures WHERE id = ? AND (? OR visible)', id, ismod())
	videos = query('SELECT * FROM videos WHERE lecture_id = ? AND (? OR visible)', id, ismod())
	if not videos:
		flash('Zu dieser Vorlesung wurden noch keine Videos veröffentlicht!')
	courses = query('SELECT * FROM courses WHERE id = ? AND (? OR (visible AND listed))', lectures[0]['course_id'], ismod())
	if not courses:
144
		return render_endpoint('course', 'Diese Veranstaltung existiert nicht!'), 404
145
	return render_template('play.html', course=courses[0], lecture=lectures[0], videos=videos)
146
147
148
149
150
151
152

@app.route('/search')
def search():
	if 'q' not in request.args:
		return redirect(url_for('index'))
	q = request.args['q']
	courses = searchquery(q, '*', ['title', 'short', 'organizer', 'subject', 'description'],
153
			'courses', 'WHERE (? OR (visible AND listed)) GROUP BY id ORDER BY _score DESC, semester DESC LIMIT 20', ismod())
154
155
156
	lectures = searchquery(q, 'lectures.*, courses.visible AS coursevisible, courses.listed, courses.short, courses.downloadable, courses.title AS coursetitle',
			['lectures.title', 'lectures.comment', 'lectures.speaker', 'courses.short'],
			'lectures LEFT JOIN courses on (courses.id = lectures.course_id)',
157
			'WHERE (? OR (coursevisible AND listed AND visible)) GROUP BY id ORDER BY _score DESC, time DESC LIMIT 30', ismod())
158
	return render_template('search.html', searchtext=request.args['q'], courses=courses, lectures=lectures)
Andreas Valder's avatar
Andreas Valder committed
159

160
@app.route('/login', methods=['GET', 'POST'])
Julian Rother's avatar
Julian Rother committed
161
def login():
162
163
	if request.method == 'GET':
		return render_template('login.html')
Julian Rother's avatar
Julian Rother committed
164
	user, groups = ldapauth(request.form.get('user'), request.form.get('password'))
165
	if not user or not 'users' in groups:
166
		flash('Login fehlgeschlagen!')
167
168
169
170
171
172
173
		return render_template('login.html')
	session['user'] = ldapget(user)
	dbuser = query('SELECT * FROM users WHERE name = ?', user)
	if not dbuser:
		query('INSERT INTO users (name, realname, fsacc, level, calendar_key, rfc6238) VALUES (?, ?, ?, 1, "", "")', user, session['user']['givenName'], user)
		dbuser = query('SELECT * FROM users WHERE name = ?', user)
	session['user']['dbid'] = dbuser[0]['id']
Julian Rother's avatar
Julian Rother committed
174
	return redirect(request.values.get('ref', url_for('index')))
Julian Rother's avatar
Julian Rother committed
175

Julian Rother's avatar
Julian Rother committed
176
@app.route('/logout', methods=['GET', 'POST'])
Julian Rother's avatar
Julian Rother committed
177
178
def logout():
	session.pop('user')
Julian Rother's avatar
Julian Rother committed
179
	return redirect(request.values.get('ref', url_for('index')))
Julian Rother's avatar
Julian Rother committed
180

181
@app.route('/edit', methods=['GET', 'POST'])
182
@mod_required
Julian Rother's avatar
Julian Rother committed
183
184
185
def edit():
	tabs = {
		'courses': ('courses_data', 'id', ['visible', 'listed', 'title', 'short',
Andreas Valder's avatar
Andreas Valder committed
186
				'handle', 'organizer', 'subject', 'semester', 'downloadable',
187
				'internal', 'responsible','deleted']),
Julian Rother's avatar
Julian Rother committed
188
		'lectures': ('lectures_data', 'id', ['visible', 'title', 'comment',
189
				'internal', 'speaker', 'place', 'time', 'duration', 'jumplist','deleted']),
190
		'site_texts': ('site_texts', 'key', ['value']),
191
		'videos': ('videos_data', 'id', ['visible','deleted'])
Julian Rother's avatar
Julian Rother committed
192
	}
193
	query('BEGIN')
194
	if request.is_json:
Julian Rother's avatar
Julian Rother committed
195
196
197
198
		changes = request.get_json().items()
	else:
		changes = request.args.items()
	for key, val in changes:
199
		table, id, column = key.split('.', 2)
Julian Rother's avatar
Julian Rother committed
200
201
		assert table in tabs
		assert column in tabs[table][2]
202
		query('INSERT INTO changelog ("table",id_value,id_key,field,value_new,value_old,"when",who,executed) VALUES (?,?,?,?,?,(SELECT %s FROM %s WHERE %s = ?),?,?,1)'%(column,tabs[table][0],tabs[table][1]),table,id,tabs[table][1],column,val,id,datetime.now(),session['user']['givenName'])
203
		query('UPDATE %s SET %s = ? WHERE %s = ?'%(tabs[table][0], column,tabs[table][1]), val, id)
204

205
	query('COMMIT')
206
	return "OK", 200
Julian Rother's avatar
Julian Rother committed
207

208

209
210
211
212
213
@app.route('/auth')
def auth(): # For use with nginx auth_request
	if 'X-Original-Uri' not in request.headers:
		return 'Internal Server Error', 500
	url = request.headers['X-Original-Uri'].lstrip(config['VIDEOPREFIX'])
214
	ip = request.headers.get('X-Real-IP', '')
215
	if url.endswith('jpg'):
216
		return "OK", 200
217
218
219
220
221
222
223
224
225
226
	videos = query('''SELECT videos.path, videos.id, lectures.id AS lecture_id, courses.id AS course_id, protected.*
      FROM videos
      JOIN lectures ON (videos.lecture_id = lectures.id)
      JOIN courses ON (lectures.course_id = courses.id)
			LEFT JOIN protected ON (videos.id = protected.video_id OR lectures.id = protected.lecture_id OR courses.id = protected.course_id)
      WHERE videos.path = ?
      AND (? OR (courses.visible AND lectures.visible AND videos.visible))
			ORDER BY protected.video_id DESC, protected.lecture_id DESC, protected.course_id DESC''',
			url, ismod())
	if not videos:
227
		return "Not allowed", 403
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
	first = videos[0]
	allowed = False
	types = []
	auth = request.authorization
	for video in videos:
		if first and ((first['video_id'] and not video['video_id']) \
			or (first['lecture_id'] and not video['lecture_id'])):
			break
		types.append(video['auth_type'])
		if video['auth_type'] == 'public':
			allowed = True
			break
		elif video['auth_type'] == 'password':
			if auth and video['auth_user'] == auth.username and video['auth_passwd'] == auth.password:
				allowed = True
				break
	if allowed or ismod():
		return 'OK', 200
		query('INSERT INTO log VALUES (?, "", ?, "video", ?, ?)', ip, datetime.now(), videos[0]['id'], url)
	elif 'password' in types:
		return Response("Login required", 401, {'WWW-Authenticate': 'Basic realm="Login Required"'})
	return "Not allowed", 403
Andreas Valder's avatar
Andreas Valder committed
250
251

@app.route('/schedule')
252
253
@register_navbar('Drehplan', 'calendar')
@mod_required
Andreas Valder's avatar
Andreas Valder committed
254
def schedule():
255
256
257
258
259
	if 'kw' not in request.args:
		kw=0
	else:
		kw=int(request.args['kw'])
	start = date.today() - timedelta(days=date.today().weekday() -7*kw)
Andreas Valder's avatar
Andreas Valder committed
260
261
262
	days = [{'date': start, 'lectures': [], 'atonce':0, 'index': 0 }]
	earlieststart=time(23,59)
	latestend=time(0,0)
263
	for i in range(1,7):
Andreas Valder's avatar
Andreas Valder committed
264
		days.append({'date': days[i-1]['date'] + timedelta(days=1), 'atonce':0, 'index': i, 'lectures':[] })
265
266
	for i in days:
		# date and times are burning in sqlite
267
268
		s = datetime.combine(i['date'],time())
		e = datetime.combine(i['date'],time(23,59))
269
270
271
272
273
274
275
		i['lectures'] = query ('''
					SELECT lectures.*,courses.short
					FROM lectures 
					JOIN courses ON (lectures.course_id = courses.id) 
					WHERE (time < ?) AND (time > ?) 
					ORDER BY time ASC'''
				,e,s);
276
277
278
279
280
		# sweepline to find out how many lectures overlap
		maxcol=0;
		curcol=0;
		freecol=[];
		for l in i['lectures']:
281
			# who the hell inserts lectures with zero length?!?!?
282
			l['time_end'] = l['time']+timedelta(minutes=max(l['duration'],1))
283
		for l in sorted([(l['time'],True,l) for l in i['lectures']] + [(l['time_end'],False,l) for l in i['lectures']],key=lambda t:(t[0],t[1])):
284
285
286
287
288
289
290
			if l[1]:
				curcol += 1
				if curcol > maxcol:
					maxcol = curcol
				if len(freecol) == 0:
					freecol.append(maxcol)
				l[2]['schedule_col'] = freecol.pop()
Andreas Valder's avatar
Andreas Valder committed
291
292
				if earlieststart > l[0].time():
					earlieststart = l[0].time()
293
294
295
			else:
				curcol -= 1
				freecol.append(l[2]['schedule_col'])
Andreas Valder's avatar
Andreas Valder committed
296
297
				if latestend < l[0].time():
					latestend = l[0].time()
298
299
		i['maxcol'] = max(maxcol,1)
	times=[]
Andreas Valder's avatar
Andreas Valder committed
300
	s = min(earlieststart,time(8,0))
301
302
	e = max(latestend,time(19,0))
	for i in range(s.hour*4,min(int((60*e.hour/15)/4)*4+5,24*4)):
303
304
305
		t = i*15
		times.append(time(int(t/60),t%60))
	
306
	return render_template('schedule.html',days=days,times=times,kw=kw)
Andreas Valder's avatar
Andreas Valder committed
307
308
309
310
311
312

@app.route('/stats')
@register_navbar('Statistiken', 'stats')
@mod_required
def stats():
	return render_template('stats.html')
Andreas Valder's avatar
Andreas Valder committed
313
314
315
316
317

@app.route('/log')
@register_navbar('Changelog', 'book')
@mod_required
def log():
318
	changelog = query('SELECT *, ( "table" || "." || id_value || "." ||field) as path FROM changelog LEFT JOIN users ON (changelog.who = users.id) ORDER BY "when" DESC LIMIT 50')
319
	return render_template('log.html', changelog=changelog)
Andreas Valder's avatar
Andreas Valder committed
320
321
322
323

@app.route('/import/<source>/<id>')
@app.route('/import/<source>/<int:numid>')
@handle_errors('course', 'Diese Veranstaltung existiert nicht!', 404, IndexError)
Andreas Valder's avatar
Andreas Valder committed
324
@mod_required
Andreas Valder's avatar
Andreas Valder committed
325
326
327
def import_from(numid=None, source=None, id=None):
	if source != "campus":
		return "Unknown source", 404
Andreas Valder's avatar
Andreas Valder committed
328
329
330
331
332
333
	if numid:
		courses = query('SELECT * FROM courses WHERE id = ?', numid)[0]
	else:
		courses = query('SELECT * FROM courses WHERE handle = ?', id)[0]
	lectures = query('SELECT * FROM lectures WHERE course_id = ?', courses['id'])
	return render_template('import_campus.html', course=courses, lectures=lectures)