server.py 23.7 KB
Newer Older
1
from flask import Flask, g, request, url_for, redirect, session, render_template, flash, Response, make_response
2
from werkzeug.routing import Rule
3
from functools import wraps
Julian Rother's avatar
Julian Rother committed
4
from datetime import date, timedelta, datetime, time, MINYEAR
5
import threading
6
import os
7
import sys
Julian Rother's avatar
Julian Rother committed
8
import hashlib
9
import random
10
import sched
11
import traceback
12
import string
13

14
app = Flask(__name__)
15

Andreas Valder's avatar
Andreas Valder committed
16
17
app.jinja_env.trim_blocks = True
app.jinja_env.lstrip_blocks = True
Julian Rother's avatar
Julian Rother committed
18
app.add_template_global(random.randint, name='randint')
19
20
app.add_template_global(datetime, name='datetime')
app.add_template_global(timedelta, name='timedelta')
Andreas Valder's avatar
Andreas Valder committed
21

22
23
scheduler = sched.scheduler()
def run_scheduler():
Andreas Valder's avatar
Andreas Valder committed
24
	import time
25
	time.sleep(1) # UWSGI does weird things on startup
26
27
	while True:
		scheduler.run()
28
		time.sleep(10)
29

30
31
32
def sched_func(delay, priority=0, firstdelay=None, args=[], kargs={}):
	if firstdelay == None:
		firstdelay = random.randint(1, 120)
33
34
35
	def wrapper(func):
		def sched_wrapper():
			with app.test_request_context():
36
37
38
39
				try:
					func(*args, **kargs)
				except Exception:
					traceback.print_exc()
40
			scheduler.enter(delay, priority, sched_wrapper)
41
		scheduler.enter(firstdelay, priority, sched_wrapper)
42
43
44
45
		return func
	return wrapper

threading.Thread(target=run_scheduler, daemon=True).start()
46

47
config = app.config
48
config.from_pyfile('config.py.example', silent=True)
49
50
51
if sys.argv[0].endswith('run.py'): 
	config['SQLITE_INIT_DATA'] = True
	config['DEBUG'] = True
52
config.from_pyfile('config.py', silent=True)
Andreas Valder's avatar
Andreas Valder committed
53
54
if config['DEBUG']:
	app.jinja_env.auto_reload = True
55
56
if not config.get('SECRET_KEY', None):
	config['SECRET_KEY'] = os.urandom(24)
Julian Rother's avatar
Julian Rother committed
57

Julian Rother's avatar
Julian Rother committed
58
from db import query, modify, searchquery, ldapauth, ldapget
Julian Rother's avatar
Julian Rother committed
59

60
mod_endpoints = []
Julian Rother's avatar
Julian Rother committed
61

Julian Rother's avatar
Cleanup    
Julian Rother committed
62
@app.template_global()
63
64
65
66
def ismod(*args):
	return ('user' in session)

def mod_required(func):
67
	mod_endpoints.append(func.__name__)
68
69
	@wraps(func)
	def decorator(*args, **kwargs):
70
		if not ismod():
71
72
73
74
75
76
			flash('Diese Funktion ist nur für Moderatoren verfügbar!')
			return redirect(url_for('login', ref=request.url))
		else:
			return func(*args, **kwargs)
	return decorator

77
78
csrf_endpoints = []

79
def csrf_protect(func):
80
	csrf_endpoints.append(func.__name__)
81
82
83
84
	@wraps(func)
	def decorator(*args, **kwargs):
		if '_csrf_token' in request.values:
			token = request.values['_csrf_token']
Andreas Valder's avatar
Andreas Valder committed
85
		elif request.get_json() and ('_csrf_token' in request.get_json()):
86
87
			token = request.get_json()['_csrf_token']
		else:
88
			token = None
89
90
91
92
93
94
		if not ('_csrf_token' in session) or (session['_csrf_token'] != token ) or not token: 
			return 'csrf test failed', 403
		else:
			return func(*args, **kwargs)
	return decorator

95
96
97
98
99
100
@app.url_defaults
def csrf_inject(endpoint, values):
	if endpoint not in csrf_endpoints or not session['_csrf_token']:
		return
	values['_csrf_token'] = session['_csrf_token']

101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
def evalperm(perms):
	cperms = []
	lperms = []
	vperms = []
	for perm in perms:
		if perm['course_id']:
			cperms.append(perm)
		elif perm['lecture_id']:
			lperms.append(perm)
		elif perm['video_id']:
			vperms.append(perm)
	if vperms:
		return vperms
	elif lperms:
	 	return lperms
	elif cperms:
		return cperms
	return [{'type': 'public'}]
119
120

@app.template_filter()
121
def checkperm(perms, username=None, password=None):
122
123
	if ismod():
		return True
124
125
126
	perms = evalperm(perms)
	for perm in perms:
		if perm['type'] == 'public':
127
			return True
128
129
		elif perm['type'] == 'password':
			if perm['param1'] == username and perm['param2'] == password:
130
				return True
131
132
		elif perm['type'] == 'l2p':
			if perm['param1'] in session.get('l2p_courses', []):
133
				return True
134
		elif perm['type'] == 'rwth':
135
136
137
138
139
			if session.get('rwthintern', False):
				return True
	return False

@app.template_filter()
140
141
def permdescr(perms):
	perms = evalperm(perms)
142
143
144
145
	public = False
	password = False
	l2p_courses = []
	rwth_intern = False
146
	fsmpi_intern = False
147
148
	for perm in perms:
		if perm['type'] == 'public':
149
			public = True
150
		elif perm['type'] == 'password':
151
			password = True
152
		elif perm['type'] == 'l2p':
153
			l2p_courses.append(perm['param1'])
154
		elif perm['type'] == 'rwth':
155
			rwth_intern = True
156
157
		elif perm['type'] == 'fsmpi':
			fsmpi_intern = True
158
	if public or not perms:
159
160
161
162
163
		return 'public', 'Öffentlich verfügbar'
	if rwth_intern:
		if password:
			return 'rwth', 'Nur für RWTH-Angehörige und Nutzer mit Passwort verfügbar'
		return 'rwth', 'Nur für RWTH-Angehörige verfügbar'
164
165
	if fsmpi_intern:
		return 'fsmpi', 'Nur für Fachschaftler verfügbar'
166
167
	if l2p_courses:
		if password:
168
169
			return 'l2p', 'Nur für Teilnehmer der Veranstaltung und Nutzer mit Passwort verfügbar'
		return 'l2p', 'Nur für Teilnehmer der Veranstaltung verfügbar'
170
171
172
173
	if password:
		return 'password', 'Nur für Nutzer mit Passwort verfügbar'
	return 'public', 'Öffentlich verfügbar'

174
app.jinja_env.globals['navbar'] = []
175
176
177
178
179
# iconlib can be 'bootstrap'
# ( see: http://getbootstrap.com/components/#glyphicons )
# or 'fa'
# ( see: http://fontawesome.io/icons/ )
def register_navbar(name, iconlib='bootstrap', icon=None):
180
	def wrapper(func):
181
		endpoint = func.__name__
182
		app.jinja_env.globals['navbar'].append((endpoint, name, iconlib, icon, not endpoint in mod_endpoints))
183
184
185
		return func
	return wrapper

Julian Rother's avatar
Cleanup    
Julian Rother committed
186
187
188
189
def render_endpoint(endpoint, flashtext=None, **kargs):
	if flashtext:
		flash(flashtext)
	# request.endpoint is used for navbar highlighting
190
	request.url_rule = Rule(request.path, endpoint=endpoint)
Julian Rother's avatar
Cleanup    
Julian Rother committed
191
192
	return app.view_functions[endpoint](**kargs)

193
194
195
196
197
198
199
def handle_errors(endpoint, text, code, *errors, **epargs):
	def wrapper(func):
		@wraps(func)
		def decorator(*args, **kwargs):
			try:
				return func(*args, **kwargs)
			except errors:
Julian Rother's avatar
Julian Rother committed
200
				if endpoint:
201
					return make_response(render_endpoint(endpoint, text, **epargs), code)
Julian Rother's avatar
Julian Rother committed
202
203
				else:
					return text, code
204
205
206
		return decorator
	return wrapper

Julian Rother's avatar
Cleanup    
Julian Rother committed
207
208
@app.errorhandler(404)
def handle_not_found(e):
209
	return render_endpoint('index', 'Diese Seite existiert nicht!'), 404
Julian Rother's avatar
Cleanup    
Julian Rother committed
210

211
212
213
214
@app.errorhandler(500)
@app.errorhandler(Exception)
def handle_internal_error(e):
	traceback.print_exc()
215
	return render_template('500.html'), 500
216

217
218
219
220
221
222
223
224
225
226
@sched_func(5*60, firstdelay=0)
def dump_error_page():
	if 'ERROR_PAGE' not in config:
		return
	request.url_rule = Rule(request.path, endpoint='handle_internal_error')
	text = render_template('500.html')
	f = open(config['ERROR_PAGE'], 'w')
	f.write(text)
	f.close()

Andreas Valder's avatar
Andreas Valder committed
227
228
# debian ships jinja2 without this test...
@app.template_test(name='equalto')
229
230
231
def equalto(a,b):
	return a == b

Julian Rother's avatar
Julian Rother committed
232
@app.template_filter(name='semester')
233
234
235
236
237
238
239
240
241
242
243
244
245
246
def human_semester(s, long=False):
	if not s or s == 'zeitlos' or len(s) != 6:
		return 'Zeitlos'
	year = s[0:4]
	semester = s[4:6].upper()
	if not year.isdigit() or semester not in ['SS', 'WS']:
		print('Invalid semester string "%s"'%s)
		return '??'
	if not long:
		return semester+year[2:]
	elif semester == 'SS':
		return 'Sommersemester %s'%year
	else:
		return 'Wintersemester %s/%s'%(year, str(int(year)+1)[2:])
Julian Rother's avatar
Julian Rother committed
247
248
249

@app.template_filter(name='date')
def human_date(d):
Andreas Valder's avatar
Andreas Valder committed
250
	return d.strftime('%d.%m.%Y')
Julian Rother's avatar
Julian Rother committed
251

Andreas Valder's avatar
Andreas Valder committed
252
@app.template_filter(name='time')
253
def human_time(d):
Andreas Valder's avatar
Andreas Valder committed
254
255
	return d.strftime('%H:%M')

Julian Rother's avatar
Julian Rother committed
256
257
258
259
@app.template_filter()
def rfc3339(d):
	return d.strftime('%Y-%m-%dT%H:%M:%S+02:00')

260
261
@app.template_global()
def get_announcements(minlevel=0):
262
263
	offset = timedelta()
	if ismod():
264
		offset = timedelta(hours=24)
265
266
267
268
	try:
		return query('SELECT * FROM announcements WHERE NOT deleted AND ((time_expire = NULL) OR time_expire > ?) AND (? OR (visible AND time_publish < ?)) AND level >= ? ORDER BY level DESC', datetime.now()-offset, ismod(), datetime.now(), minlevel)
	except:
		return []
269

270
271
272
273
274
@app.template_filter()
def fixnl(s):
	# To be remove, as soon as db schema is cleaned-up
	return str(s).replace('\n', '<br>')

275
276
277
278
279
280
281
282
283
284
285
@app.template_filter()
def tagid(s):
	if not s:
		return 'EMPTY'
	s = s.replace(' ', '_').lower()
	r = ''
	for c in s:
		if c in string.ascii_lowercase+string.digits+'_':
			r = r + c
	return r

286
@app.route('/')
287
@register_navbar('Home', icon='home')
288
def index():
289
290
291
	# handle legacy urls...
	if 'course' in request.args:
		return redirect(url_for('course', handle=request.args['course']),code=302)
292
293
294
	if 'view' in request.args:
		if (request.args['view'] == 'player') and ('lectureid' in request.args) :
			return redirect(url_for('lecture', id=request.args['lectureid']),code=302)
295

296
297
	start = date.today() - timedelta(days=1)
	end = start + timedelta(days=7)
298
299
	upcomming = query('''
		SELECT lectures.*, "course" AS sep, courses.*
Andreas Valder's avatar
Andreas Valder committed
300
301
		FROM lectures
		JOIN courses ON (lectures.course_id = courses.id)
302
303
		WHERE (time > ?) AND (time < ?) and lectures.visible and courses.visible and courses.listed
		ORDER BY time ASC LIMIT 30''',start,end)
Andreas Valder's avatar
Andreas Valder committed
304
305
306
	for i in upcomming:
		i['date'] = i['time'].date()
	latestvideos=query('''
307
		SELECT lectures.*, "course" AS sep, courses.*
Andreas Valder's avatar
Andreas Valder committed
308
309
310
311
312
		FROM lectures
		LEFT JOIN videos ON (videos.lecture_id = lectures.id)
		LEFT JOIN courses on (courses.id = lectures.course_id)
		WHERE (? OR (courses.visible AND courses.listed AND lectures.visible AND videos.visible))
		GROUP BY videos.lecture_id
313
		ORDER BY MAX(videos.time_updated) DESC
Andreas Valder's avatar
Andreas Valder committed
314
		LIMIT 6	''',ismod())
315
316
	featured = query('SELECT * FROM featured WHERE NOT deleted AND (? OR visible)', ismod())
	return render_template('index.html', latestvideos=latestvideos, upcomming=upcomming, featured=featured)
317

318
@app.route('/course')
319
@register_navbar('Videos', icon='film')
320
def courses():
321
	courses = query('SELECT * FROM courses WHERE (? OR (visible AND listed)) ORDER BY title', ismod())
322
323
324
	for course in courses:
		if course['semester'] == '':
			course['semester'] = 'zeitlos'
Andreas Valder's avatar
Andreas Valder committed
325
	groupedby = request.args.get('groupedby')
Julian Rother's avatar
Cleanup    
Julian Rother committed
326
	if groupedby not in ['title', 'semester', 'organizer']:
Andreas Valder's avatar
Andreas Valder committed
327
		groupedby = 'semester'
328
	return render_template('courses.html', courses=courses, groupedby=groupedby)
Andreas Valder's avatar
Andreas Valder committed
329

330
331
@app.route('/course/<handle>')
@app.route('/course/<int:id>')
332
@handle_errors('courses', 'Diese Veranstaltung existiert nicht!', 404, IndexError)
333
334
def course(id=None, handle=None):
	if id:
335
		course = query('SELECT * FROM courses WHERE id = ? AND (? OR visible)', id, ismod())[0]
336
	else:
337
		course = query('SELECT * FROM courses WHERE handle = ? AND (? OR visible)', handle, ismod())[0]
338
339
	course['perm'] = query('SELECT * FROM perm WHERE (NOT perm.deleted) AND course_id = ? ORDER BY type', course['id'])
	perms = query('SELECT perm.* FROM perm JOIN lectures ON (perm.lecture_id = lectures.id) WHERE (NOT perm.deleted) AND lectures.course_id = ? ORDER BY perm.type', course['id'])
340
	lectures = query('SELECT * FROM lectures WHERE course_id = ? AND (? OR visible) ORDER BY time, duration DESC', course['id'], ismod())
341
	for lecture in lectures:
342
		lecture['perm'] = []
343
		lecture['perm'] += course['perm']
344
		lecture['course'] = course
345
346
347
		for perm in perms:
			if perm['lecture_id'] == lecture['id']:
				lecture['perm'].append(perm)
Andreas Valder's avatar
Andreas Valder committed
348
	videos = query('''
349
			SELECT videos.*, (videos.downloadable AND courses.downloadable) as downloadable, formats.description AS format_description, formats.player_prio, formats.prio
Andreas Valder's avatar
Andreas Valder committed
350
351
352
353
354
355
			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
356
357
			''', course['id'], ismod())
	return render_template('course.html', course=course, lectures=lectures, videos=videos)
Andreas Valder's avatar
Andreas Valder committed
358

Andreas Valder's avatar
Andreas Valder committed
359
@app.route('/faq')
360
@register_navbar('FAQ', icon='question-sign')
Andreas Valder's avatar
Andreas Valder committed
361
def faq():
362
	return render_template('faq.html')
Andreas Valder's avatar
Andreas Valder committed
363

364
@app.route('/play/<int:id>')
Andreas Valder's avatar
Andreas Valder committed
365
@app.route('/embed/<int:id>', endpoint='embed')
366
@handle_errors('course', 'Diese Vorlesung existiert nicht!', 404, IndexError)
367
def lecture(id):
Andreas Valder's avatar
Andreas Valder committed
368
369
370
371
372
	lecture = query('SELECT * FROM lectures WHERE id = ? AND (? OR visible)', id, ismod())[0]
	videos = query('''
			SELECT videos.*, (videos.downloadable AND courses.downloadable) as downloadable, formats.description AS format_description, formats.player_prio, formats.prio
			FROM videos
			JOIN formats ON (videos.video_format = formats.id)
373
374
375
376
			JOIN courses ON (courses.id = ?)
			WHERE videos.lecture_id = ? AND (? OR videos.visible)
			ORDER BY formats.prio DESC
			''', lecture['course_id'], lecture['id'], ismod())
377
	perms = query('SELECT perm.* FROM perm WHERE ((NOT perm.deleted) AND (perm.lecture_id = ? OR perm.course_id = ?))',
378
			lecture['id'], lecture['course_id'])
379
380
	if not videos:
		flash('Zu dieser Vorlesung wurden noch keine Videos veröffentlicht!')
381
	courses = query('SELECT * FROM courses WHERE id = ? AND (? OR visible)', lecture['course_id'], ismod())
382
383
	if not courses:
		return render_endpoint('courses', 'Diese Veranstaltung existiert nicht!'), 404
384
	chapters = query('SELECT * FROM chapters WHERE lecture_id = ? AND NOT deleted AND (? OR visible) ORDER BY time ASC', id, ismod())
385
386
	if not checkperm(perms):
		mode, text = permdescr(perms)
387
388
389
390
391
392
		if mode == 'rwth':
			flash(text+'. <a target="_blank" href="'+url_for('start_rwthauth')+'">Hier authorisieren</a>.')
		elif mode == 'l2p':
			flash(text+'. <a target="_blank" href="'+url_for('start_l2pauth')+'">Hier authorisieren</a>.')
		else:
			flash(text+'.')
393
	return render_template('embed.html' if request.endpoint == 'embed' else 'lecture.html', course=courses[0], lecture=lecture, videos=videos, chapters=chapters)
Andreas Valder's avatar
Andreas Valder committed
394

395
396
397
398
399
400
401

@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'],
402
			'courses', 'WHERE (? OR (visible AND listed)) GROUP BY id ORDER BY _score DESC, semester DESC LIMIT 20', ismod())
Julian Rother's avatar
Julian Rother committed
403
404
405
406
407
	#lectures = searchquery(q, 'lectures.*, courses.visible AS coursevisible, courses.listed, "course" AS sep, courses.*',
	#			['lectures.title', 'lectures.comment', 'lectures.speaker', 'courses.short'],
	#			'lectures LEFT JOIN courses on (courses.id = lectures.course_id)',
	#			'WHERE (? OR (coursevisible AND listed AND visible)) GROUP BY id ORDER BY _score DESC, time DESC LIMIT 30', ismod())
	lectures = searchquery(q, 'lectures.*, courses.visible AS coursevisible, courses.listed, courses.id AS courses_id, courses.visible AS courses_visible, courses.listed AS courses_listed, courses.title AS courses_title, courses.short AS courses_short, courses.handle AS courses_handle, courses.organizer AS courses_organizer, courses.subject AS courses_subject, courses.credits AS courses_credits, courses.created_by AS courses_created_by, courses.time_created AS courses_time_created, courses.time_updated AS courses_time_updated, courses.semester AS courses_semester, courses.downloadable AS courses_downloadable, courses.embedinvisible AS courses_embedinvisible, courses.description AS courses_description, courses.internal AS courses_internal, courses.responsible AS courses_responsible',
408
409
			['lectures.title', 'lectures.comment', 'lectures.speaker', 'courses.short'],
			'lectures LEFT JOIN courses on (courses.id = lectures.course_id)',
410
			'WHERE (? OR (coursevisible AND listed AND visible)) GROUP BY id ORDER BY _score DESC, time DESC LIMIT 30', ismod())
Julian Rother's avatar
Julian Rother committed
411
412
413
414
415
	for lecture in lectures:
		lecture['course'] = {}
		for key in lecture:
			if key.startswith('courses_'):
				lecture['course'][key[8:]] = lecture[key]
416
	return render_template('search.html', searchtext=request.args['q'], courses=courses, lectures=lectures)
Andreas Valder's avatar
Andreas Valder committed
417

418
419
420
def check_mod(user, groups):
	return user and 'users' in groups

421
@app.route('/login', methods=['GET', 'POST'])
Julian Rother's avatar
Julian Rother committed
422
def login():
423
424
	if request.method == 'GET':
		return render_template('login.html')
Julian Rother's avatar
Julian Rother committed
425
	user, groups = ldapauth(request.form.get('user'), request.form.get('password'))
426
	if not check_mod(user, groups):
427
		flash('Login fehlgeschlagen!')
428
429
430
431
		return render_template('login.html')
	session['user'] = ldapget(user)
	dbuser = query('SELECT * FROM users WHERE name = ?', user)
	if not dbuser:
Julian Rother's avatar
Julian Rother committed
432
		modify('INSERT INTO users (name, realname, fsacc, level, calendar_key, rfc6238) VALUES (?, ?, ?, 1, "", "")', user, session['user']['givenName'], user)
433
434
		dbuser = query('SELECT * FROM users WHERE name = ?', user)
	session['user']['dbid'] = dbuser[0]['id']
435
	session['_csrf_token'] = ''.join(random.SystemRandom().choice(string.ascii_letters + string.digits) for _ in range(128))
Julian Rother's avatar
Julian Rother committed
436
	return redirect(request.values.get('ref', url_for('index')))
Julian Rother's avatar
Julian Rother committed
437

Julian Rother's avatar
Julian Rother committed
438
@app.route('/logout', methods=['GET', 'POST'])
Julian Rother's avatar
Julian Rother committed
439
440
def logout():
	session.pop('user')
Julian Rother's avatar
Julian Rother committed
441
	return redirect(request.values.get('ref', url_for('index')))
Julian Rother's avatar
Julian Rother committed
442

443
# name: (tablename, idcolumn, [editable_fields], [fields_to_set_at_creation_time])
444
445
446
tabs = {
	'courses': ('courses_data', 'id', ['visible', 'listed', 'title', 'short',
			'handle', 'organizer', 'subject', 'semester', 'downloadable',
447
			'internal', 'responsible','deleted','description'],
448
			['created_by', 'time_created', 'time_updated']),
449
	'lectures': ('lectures_data', 'id', ['visible', 'title', 'comment',
450
451
452
453
454
455
456
457
458
459
			'internal', 'speaker', 'place', 'time', 'duration', 'jumplist','deleted'],
			['course_id', 'time_created', 'time_updated']),
	'videos': ('videos_data', 'id', ['visible','deleted'],
			['created_by', 'time_created', 'time_updated']),
	'chapters': ('chapters', 'id', ['time', 'text', 'visible', 'deleted'],
			['created_by', 'time_created', 'time_updated']),
	'announcements': ('announcements', 'id', ['text', 'level', 'visible',
			'deleted', 'time_publish', 'time_expire'],
			['created_by', 'time_created', 'time_updated']),
	'featured': ('featured', 'id', ['title', 'text', 'internal', 'visible', 'deleted'],
460
			['created_by', 'time_created', 'time_updated']),
461
	'perm': ('perm', 'id', ['type', 'param1', 'param2', 'deleted'],
462
463
464
			['course_id', 'lecture_id', 'video_id', 'created_by', 'time_created', 'time_updated']),
	'sorterrorlog': ('sorterrorlog_data', 'id', ['deleted'],
			['time_created', 'time_updated'])
465
466
}

467
@app.route('/edit', methods=['GET', 'POST'])
468
@mod_required
469
@csrf_protect
470
def edit(prefix='', ignore=[]):
471
	# All editable tables are expected to have a 'time_updated' field
472
	ignore.append('ref')
473
	ignore.append('prefix')
474
	ignore.append('_csrf_token')
475
476
	if not prefix and 'prefix' in request.args:
		prefix = request.args['prefix']
Julian Rother's avatar
Julian Rother committed
477
	modify('BEGIN')
478
	changes = request.values.items()
479
	if (request.method == 'POST') and (request.get_json()):
Julian Rother's avatar
Julian Rother committed
480
481
		changes = request.get_json().items()
	for key, val in changes:
482
483
484
		if key in ignore:
			continue
		key = prefix+key
485
		table, id, column = key.split('.', 2)
Julian Rother's avatar
Julian Rother committed
486
487
		assert table in tabs
		assert column in tabs[table][2]
488
489
		modify('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']['dbid'])
Julian Rother's avatar
Julian Rother committed
490
491
		modify('UPDATE %s SET %s = ?, time_updated = ? WHERE %s = ?'%(tabs[table][0], column, tabs[table][1]), val, datetime.now(), id)
	modify('COMMIT')
492
493
	if 'ref' in request.values:
		return redirect(request.values['ref'])
494
	return "OK", 200
Julian Rother's avatar
Julian Rother committed
495

496
@app.route('/new/<table>', methods=['GET', 'POST'])
497
@mod_required
498
@csrf_protect
499
500
def create(table):
	assert table in tabs
501
502
503
504
505
506
507
	defaults = {'created_by': session['user']['dbid'], 'time_created': datetime.now(), 'time_updated': datetime.now()}
	columns = []
	values = []
	for column, val in defaults.items():
		if column in tabs[table][3]:
			columns.append(column)
			values.append(val)
Andreas Valder's avatar
Andreas Valder committed
508
	args = request.values.items()
509
	if (request.method == 'POST') and (request.get_json()):
510
511
512
		args = request.get_json().items()
	for column, val in args:
		if (column == 'ref') or (column == '_csrf_token'):
513
			continue
514
515
		assert column in tabs[table][2]+tabs[table][3]
		assert column not in defaults
516
517
518
519
		columns.append(column)
		values.append(val)
	id = modify('INSERT INTO %s (%s) VALUES (%s)'%(tabs[table][0],
				','.join(columns), ','.join(['?']*len(values))), *values)
520
521
522
523
	if 'ref' in request.values:
		return redirect(request.values['ref'])
	return str(id), 200

524
525
526
527
528
@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'])
529
	ip = request.headers.get('X-Real-IP', '')
530
531
532
533
534
	if 'tracking' in request.cookies:
		cookie = request.cookies['tracking']
	else:
		cookie = ''.join(random.choice(string.ascii_letters + string.digits) for _ in range(64))
	#	r.set_cookie('tracking', request.cookies.get('tracking', ''.join(random.choice(string.ascii_letters + string.digits) for _ in range(64))), max_age=2147483647)
535
	if url.endswith('jpg') or ismod():
536
		return "OK", 200
537
	perms = query('''SELECT videos.path, videos.id AS vid, perm.*
538
539
540
      FROM videos
      JOIN lectures ON (videos.lecture_id = lectures.id)
      JOIN courses ON (lectures.course_id = courses.id)
541
			LEFT JOIN perm ON ((videos.id = perm.video_id OR lectures.id = perm.lecture_id OR courses.id = perm.course_id) AND NOT perm.deleted)
542
      WHERE videos.path = ?
543
      AND (courses.visible AND lectures.visible AND videos.visible)
544
			ORDER BY perm.video_id DESC, perm.lecture_id DESC, perm.course_id DESC''',
545
			url)
546
	if not perms:
547
		return "Not allowed", 403
548
	auth = request.authorization
549
550
551
552
	username = password = None
	if auth:
		username = auth.username
		password = auth.password
553
	if checkperm(perms, username=username, password=password):
554
555
556
557
558
559
560
		try:
			modify('INSERT INTO log VALUES (?, ?, ?, "video", ?, ?)', ip, cookie, datetime.now(), perms[0]['vid'], url)
		except:
			pass
		r = make_response('OK', 200)
		r.set_cookie('tracking', cookie, max_age=2147483647) # Many many years
		return r
561
	password_auth = False
562
563
	for perm in perms:
		if perm['type'] == 'password':
564
565
566
			password_auth = True
			break
	if password_auth:
567
568
		return Response("Login required", 401, {'WWW-Authenticate': 'Basic realm="Login Required"'})
	return "Not allowed", 403
Andreas Valder's avatar
Andreas Valder committed
569

Andreas Valder's avatar
Andreas Valder committed
570
@app.route('/changelog')
Andreas Valder's avatar
Andreas Valder committed
571
@register_navbar('Changelog', icon='book')
Andreas Valder's avatar
Andreas Valder committed
572
@mod_required
573
def changelog():
574
575
576
	changelog = query('SELECT * FROM changelog LEFT JOIN users ON (changelog.who = users.id) ORDER BY `when` DESC LIMIT 50')
	for entry in changelog:
		entry['path'] = '.'.join([entry['table'], entry['id_value'], entry['field']])
577
	return render_template('changelog.html', changelog=changelog)
Andreas Valder's avatar
Andreas Valder committed
578

Julian Rother's avatar
Julian Rother committed
579
580
581
582
@app.route('/files/<filename>')
def files(filename):
	return redirect(config['VIDEOPREFIX']+'/'+filename)

583
584
585
586
587
@app.route('/newchapter/<int:lectureid>', methods=['POST', 'GET'])
def suggest_chapter(lectureid):
	time = request.values['time']
	text = request.values['text']
	assert(time and text)
588
589
590
591
592
593
594
	try:
		x = datetime.strptime(time,'%H:%M:%S')
		time= timedelta(hours=x.hour,minutes=x.minute,seconds=x.second).total_seconds()
		time = int(time)
	except ValueError:
		flash('Falsches Zeitformat, "%H:%M:%S" wird erwartet. Z.B. "01:39:42" für eine Kapitel bei Stunde 1, Minute 39, Sekunde 42')
		
595
596
597
	submitter = None
	if not ismod():
		submitter = request.environ['REMOTE_ADDR']
Julian Rother's avatar
Julian Rother committed
598
	id = modify('INSERT INTO chapters (lecture_id, time, text, time_created, time_updated, created_by, submitted_by) VALUES (?, ?, ?, ?, ?, ?, ?)',
599
600
601
602
603
				lectureid, time, text, datetime.now(), datetime.now(), session.get('user', {'dbid':None})['dbid'], submitter)
	if 'ref' in request.values:
		return redirect(request.values['ref'])
	return 'OK',  200

604
605
@app.route('/chapters/<int:lectureid>')
def chapters(lectureid):
606
	chapters = query("SELECT * FROM chapters WHERE lecture_id = ? AND NOT deleted AND (visible OR ?) ORDER BY time DESC", lectureid, ismod())
607
608
	if not chapters:
		return 'No chapters found', 404
609
610
611
612
613
614
615
	last = None
	for c in chapters:
		c['start'] = c['time']
		c['end'] = last['start'] if last else 9999
		last = c
	return Response(render_template('chapters.srt',chapters=chapters), 200, {'Content-Type':'text/vtt'})

Andreas Valder's avatar
Andreas Valder committed
616
@app.route('/sitemap.xml')
Andreas Valder's avatar
Andreas Valder committed
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
def sitemap():
	pages=[]
	# static pages
	for rule in app.url_map.iter_rules():
		if 'GET' in rule.methods and len(rule.arguments)==0:
			if rule.endpoint not in mod_endpoints:
				pages.append([rule.rule])
	for i in query('select * from courses where visible and listed'):
		pages.append([url_for('course',handle=i['handle'])])
		for j in query('select * from lectures where (course_id = ? and visible)',i['id']):
			pages.append([url_for('lecture',id=j['id'])])


	return Response(render_template('sitemap.xml', pages=pages), 200, {'Content-Type': 'application/atom+xml'} )

Julian Rother's avatar
Julian Rother committed
632
import feeds
633
import importer
634
import stats
Andreas Valder's avatar
Andreas Valder committed
635
import sorter
636
637
if 'ICAL_URL' in config:
	import meetings
638
import l2pauth
Andreas Valder's avatar
Andreas Valder committed
639
640
if 'JOBS_API_KEY' in config:
	import jobs
Andreas Valder's avatar
Andreas Valder committed
641
import timetable