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+ 438
- 0
.gitignore View File

@@ -0,0 +1,438 @@
1
+
2
+# Created by https://www.gitignore.io/api/rust,linux,latex,kdevelop4,intellij+all,node
3
+
4
+### Intellij+all ###
5
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and WebStorm
6
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
7
+
8
+# User-specific stuff
9
+.idea/**/workspace.xml
10
+.idea/**/tasks.xml
11
+.idea/**/usage.statistics.xml
12
+.idea/**/dictionaries
13
+.idea/**/shelf
14
+
15
+# Sensitive or high-churn files
16
+.idea/**/dataSources/
17
+.idea/**/dataSources.ids
18
+.idea/**/dataSources.local.xml
19
+.idea/**/sqlDataSources.xml
20
+.idea/**/dynamic.xml
21
+.idea/**/uiDesigner.xml
22
+.idea/**/dbnavigator.xml
23
+
24
+# Gradle
25
+.idea/**/gradle.xml
26
+.idea/**/libraries
27
+
28
+# Gradle and Maven with auto-import
29
+# When using Gradle or Maven with auto-import, you should exclude module files,
30
+# since they will be recreated, and may cause churn.  Uncomment if using
31
+# auto-import.
32
+# .idea/modules.xml
33
+# .idea/*.iml
34
+# .idea/modules
35
+
36
+# CMake
37
+cmake-build-*/
38
+
39
+# Mongo Explorer plugin
40
+.idea/**/mongoSettings.xml
41
+
42
+# File-based project format
43
+*.iws
44
+
45
+# IntelliJ
46
+out/
47
+
48
+# mpeltonen/sbt-idea plugin
49
+.idea_modules/
50
+
51
+# JIRA plugin
52
+atlassian-ide-plugin.xml
53
+
54
+# Cursive Clojure plugin
55
+.idea/replstate.xml
56
+
57
+# Crashlytics plugin (for Android Studio and IntelliJ)
58
+com_crashlytics_export_strings.xml
59
+crashlytics.properties
60
+crashlytics-build.properties
61
+fabric.properties
62
+
63
+# Editor-based Rest Client
64
+.idea/httpRequests
65
+
66
+### Intellij+all Patch ###
67
+# Ignores the whole .idea folder and all .iml files
68
+# See https://github.com/joeblau/gitignore.io/issues/186 and https://github.com/joeblau/gitignore.io/issues/360
69
+
70
+.idea/
71
+
72
+# Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-249601023
73
+
74
+*.iml
75
+modules.xml
76
+.idea/misc.xml
77
+*.ipr
78
+
79
+### KDevelop4 ###
80
+*.kdev4
81
+.kdev4/
82
+
83
+### LaTeX ###
84
+## Core latex/pdflatex auxiliary files:
85
+*.aux
86
+*.lof
87
+*.log
88
+*.lot
89
+*.fls
90
+*.out
91
+*.toc
92
+*.fmt
93
+*.fot
94
+*.cb
95
+*.cb2
96
+.*.lb
97
+
98
+## Intermediate documents:
99
+*.dvi
100
+*.xdv
101
+*-converted-to.*
102
+# these rules might exclude image files for figures etc.
103
+# *.ps
104
+# *.eps
105
+# *.pdf
106
+
107
+## Generated if empty string is given at "Please type another file name for output:"
108
+.pdf
109
+
110
+## Bibliography auxiliary files (bibtex/biblatex/biber):
111
+*.bbl
112
+*.bcf
113
+*.blg
114
+*-blx.aux
115
+*-blx.bib
116
+*.run.xml
117
+
118
+## Build tool auxiliary files:
119
+*.fdb_latexmk
120
+*.synctex
121
+*.synctex(busy)
122
+*.synctex.gz
123
+*.synctex.gz(busy)
124
+*.pdfsync
125
+
126
+## Build tool directories for auxiliary files
127
+# latexrun
128
+latex.out/
129
+
130
+## Auxiliary and intermediate files from other packages:
131
+# algorithms
132
+*.alg
133
+*.loa
134
+
135
+# achemso
136
+acs-*.bib
137
+
138
+# amsthm
139
+*.thm
140
+
141
+# beamer
142
+*.nav
143
+*.pre
144
+*.snm
145
+*.vrb
146
+
147
+# changes
148
+*.soc
149
+
150
+# cprotect
151
+*.cpt
152
+
153
+# elsarticle (documentclass of Elsevier journals)
154
+*.spl
155
+
156
+# endnotes
157
+*.ent
158
+
159
+# fixme
160
+*.lox
161
+
162
+# feynmf/feynmp
163
+*.mf
164
+*.mp
165
+*.t[1-9]
166
+*.t[1-9][0-9]
167
+*.tfm
168
+
169
+#(r)(e)ledmac/(r)(e)ledpar
170
+*.end
171
+*.?end
172
+*.[1-9]
173
+*.[1-9][0-9]
174
+*.[1-9][0-9][0-9]
175
+*.[1-9]R
176
+*.[1-9][0-9]R
177
+*.[1-9][0-9][0-9]R
178
+*.eledsec[1-9]
179
+*.eledsec[1-9]R
180
+*.eledsec[1-9][0-9]
181
+*.eledsec[1-9][0-9]R
182
+*.eledsec[1-9][0-9][0-9]
183
+*.eledsec[1-9][0-9][0-9]R
184
+
185
+# glossaries
186
+*.acn
187
+*.acr
188
+*.glg
189
+*.glo
190
+*.gls
191
+*.glsdefs
192
+
193
+# gnuplottex
194
+*-gnuplottex-*
195
+
196
+# gregoriotex
197
+*.gaux
198
+*.gtex
199
+
200
+# htlatex
201
+*.4ct
202
+*.4tc
203
+*.idv
204
+*.lg
205
+*.trc
206
+*.xref
207
+
208
+# hyperref
209
+*.brf
210
+
211
+# knitr
212
+*-concordance.tex
213
+# TODO Comment the next line if you want to keep your tikz graphics files
214
+*.tikz
215
+*-tikzDictionary
216
+
217
+# listings
218
+*.lol
219
+
220
+# makeidx
221
+*.idx
222
+*.ilg
223
+*.ind
224
+*.ist
225
+
226
+# minitoc
227
+*.maf
228
+*.mlf
229
+*.mlt
230
+*.mtc[0-9]*
231
+*.slf[0-9]*
232
+*.slt[0-9]*
233
+*.stc[0-9]*
234
+
235
+# minted
236
+_minted*
237
+*.pyg
238
+
239
+# morewrites
240
+*.mw
241
+
242
+# nomencl
243
+*.nlg
244
+*.nlo
245
+*.nls
246
+
247
+# pax
248
+*.pax
249
+
250
+# pdfpcnotes
251
+*.pdfpc
252
+
253
+# sagetex
254
+*.sagetex.sage
255
+*.sagetex.py
256
+*.sagetex.scmd
257
+
258
+# scrwfile
259
+*.wrt
260
+
261
+# sympy
262
+*.sout
263
+*.sympy
264
+sympy-plots-for-*.tex/
265
+
266
+# pdfcomment
267
+*.upa
268
+*.upb
269
+
270
+# pythontex
271
+*.pytxcode
272
+pythontex-files-*/
273
+
274
+# thmtools
275
+*.loe
276
+
277
+# TikZ & PGF
278
+*.dpth
279
+*.md5
280
+*.auxlock
281
+
282
+# todonotes
283
+*.tdo
284
+
285
+# easy-todo
286
+*.lod
287
+
288
+# xmpincl
289
+*.xmpi
290
+
291
+# xindy
292
+*.xdy
293
+
294
+# xypic precompiled matrices
295
+*.xyc
296
+
297
+# endfloat
298
+*.ttt
299
+*.fff
300
+
301
+# Latexian
302
+TSWLatexianTemp*
303
+
304
+## Editors:
305
+# WinEdt
306
+*.bak
307
+*.sav
308
+
309
+# Texpad
310
+.texpadtmp
311
+
312
+# LyX
313
+*.lyx~
314
+
315
+# Kile
316
+*.backup
317
+
318
+# KBibTeX
319
+*~[0-9]*
320
+
321
+# auto folder when using emacs and auctex
322
+./auto/*
323
+*.el
324
+
325
+# expex forward references with \gathertags
326
+*-tags.tex
327
+
328
+# standalone packages
329
+*.sta
330
+
331
+### LaTeX Patch ###
332
+# glossaries
333
+*.glstex
334
+
335
+### Linux ###
336
+*~
337
+
338
+# temporary files which can be created if a process still has a handle open of a deleted file
339
+.fuse_hidden*
340
+
341
+# KDE directory preferences
342
+.directory
343
+
344
+# Linux trash folder which might appear on any partition or disk
345
+.Trash-*
346
+
347
+# .nfs files are created when an open file is removed but is still being accessed
348
+.nfs*
349
+
350
+### Rust ###
351
+# Generated by Cargo
352
+# will have compiled files and executables
353
+**/target/
354
+
355
+# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
356
+# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
357
+Cargo.lock
358
+
359
+# These are backup files generated by rustfmt
360
+**/*.rs.bk
361
+
362
+### Node ###
363
+# Logs
364
+logs
365
+*.log
366
+npm-debug.log*
367
+yarn-debug.log*
368
+yarn-error.log*
369
+
370
+# Runtime data
371
+pids
372
+*.pid
373
+*.seed
374
+*.pid.lock
375
+
376
+# Directory for instrumented libs generated by jscoverage/JSCover
377
+lib-cov
378
+
379
+# Coverage directory used by tools like istanbul
380
+coverage
381
+
382
+# nyc test coverage
383
+.nyc_output
384
+
385
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
386
+.grunt
387
+
388
+# Bower dependency directory (https://bower.io/)
389
+bower_components
390
+
391
+# node-waf configuration
392
+.lock-wscript
393
+
394
+# Compiled binary addons (https://nodejs.org/api/addons.html)
395
+build/Release
396
+
397
+# Dependency directories
398
+node_modules/
399
+jspm_packages/
400
+
401
+# TypeScript v1 declaration files
402
+typings/
403
+
404
+# Optional npm cache directory
405
+.npm
406
+
407
+# Optional eslint cache
408
+.eslintcache
409
+
410
+# Optional REPL history
411
+.node_repl_history
412
+
413
+# Output of 'npm pack'
414
+*.tgz
415
+
416
+# Yarn Integrity file
417
+.yarn-integrity
418
+
419
+# dotenv environment variables file
420
+.env
421
+
422
+# parcel-bundler cache (https://parceljs.org/)
423
+.cache
424
+
425
+# next.js build output
426
+.next
427
+
428
+# nuxt.js build output
429
+.nuxt
430
+
431
+# vuepress build output
432
+.vuepress/dist
433
+
434
+# Serverless directories
435
+.serverless
436
+
437
+
438
+# End of https://www.gitignore.io/api/rust,linux,latex,kdevelop4,intellij+all

+ 100
- 0
API.md View File

@@ -0,0 +1,100 @@
1
+# afu-group-trainer WebSocket API 0.2.1
2
+
3
+## From server
4
+
5
+    RoomList:
6
+        Array<Room {
7
+            uuid: String
8
+            name: String
9
+            users: Int
10
+            password_required: Bool
11
+        }>[?]
12
+    
13
+    LoginResult:
14
+        Bool
15
+    
16
+    RoomJoinResult:
17
+        Bool
18
+    
19
+    CreateRoomResult:
20
+        success: Bool
21
+        uuid: String
22
+        
23
+    QuestionDatabase:
24
+        Category {
25
+            uuid: String
26
+            id: String
27
+            name: String
28
+            prefix: String
29
+            children: Array<Category>[?]
30
+            questions: Array<Question {
31
+                uuid: String
32
+                id: String
33
+                question: String
34
+                outdated: Bool
35
+                answers: Array<String>[4]
36
+            }>[?]
37
+        }
38
+        
39
+    AdminRoomStatus:
40
+        selected: Int
41
+        total: Int
42
+    
43
+    RoomState:
44
+        mode: Int (0: Waiting | 1: Question | 2: Results)
45
+        remainingQuestions: Int
46
+        initialQuestionLength: int
47
+        question: {
48
+            uuid: String
49
+            id: String
50
+            question: String
51
+            outdated: Bool
52
+            answers: Array<String>[4]
53
+        }
54
+        results: {
55
+            totalUsers: Int
56
+            correctAnswer: Int
57
+            selected: Array<Int>[4]
58
+        }
59
+    
60
+    LeaveRoom:
61
+        /
62
+        
63
+    Error:
64
+        message: String
65
+
66
+## From user
67
+
68
+    Login:
69
+        username: String
70
+        password: String
71
+    
72
+    CreateRoom:
73
+        room_name: String
74
+        password: String
75
+    
76
+    StartQuestions:
77
+        mode: String (plain | uuid)
78
+     => Only when starting with UUID:
79
+        start_uuid: String
80
+        shuffle: Bool (only respected when starting multiple questions)
81
+        ignore_outdated: Bool (only respected when starting multiple questions)
82
+    
83
+    ShowResults:
84
+        /
85
+    
86
+    NextQuestion:
87
+        /
88
+    
89
+    EndQuestions:
90
+        /
91
+
92
+    JoinRoom:
93
+        room_uuid: String
94
+        password: String
95
+    
96
+    AnswerQuestion:
97
+        id: Int
98
+    
99
+    LeaveRoom:
100
+        /

+ 675
- 0
COPYING.md View File

@@ -0,0 +1,675 @@
1
+### GNU GENERAL PUBLIC LICENSE
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+
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+Version 3, 29 June 2007
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+
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+Copyright (C) 2007 Free Software Foundation, Inc.
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+<https://fsf.org/>
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+
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+Everyone is permitted to copy and distribute verbatim copies of this
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+license document, but changing it is not allowed.
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+
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+### Preamble
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+
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+The GNU General Public License is a free, copyleft license for
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+software and other kinds of works.
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+
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+The licenses for most software and other practical works are designed
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+to take away your freedom to share and change the works. By contrast,
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+the GNU General Public License is intended to guarantee your freedom
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+to share and change all versions of a program--to make sure it remains
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+free software for all its users. We, the Free Software Foundation, use
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+the GNU General Public License for most of our software; it applies
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+also to any other work released this way by its authors. You can apply
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+it to your programs, too.
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+
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+When we speak of free software, we are referring to freedom, not
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+price. Our General Public Licenses are designed to make sure that you
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+have the freedom to distribute copies of free software (and charge for
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+them if you wish), that you receive source code or can get it if you
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+want it, that you can change the software or use pieces of it in new
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+free programs, and that you know you can do these things.
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+
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+To protect your rights, we need to prevent others from denying you
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+these rights or asking you to surrender the rights. Therefore, you
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+have certain responsibilities if you distribute copies of the
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+software, or if you modify it: responsibilities to respect the freedom
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+of others.
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+
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+For example, if you distribute copies of such a program, whether
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+gratis or for a fee, you must pass on to the recipients the same
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+freedoms that you received. You must make sure that they, too, receive
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+or can get the source code. And you must show them these terms so they
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+know their rights.
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+
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+Developers that use the GNU GPL protect your rights with two steps:
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+(1) assert copyright on the software, and (2) offer you this License
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+giving you legal permission to copy, distribute and/or modify it.
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+
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+For the developers' and authors' protection, the GPL clearly explains
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+other domains, we stand ready to extend this provision to those
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+domains in future versions of the GPL, as needed to protect the
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+freedom of users.
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+
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+Finally, every program is threatened constantly by software patents.
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+States should not allow patents to restrict development and use of
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+software on general-purpose computers, but in those that do, we wish
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+to avoid the special danger that patents applied to a free program
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+could make it effectively proprietary. To prevent this, the GPL
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+assures that patents cannot be used to render the program non-free.
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+
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+The precise terms and conditions for copying, distribution and
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+modification follow.
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+
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+### TERMS AND CONDITIONS
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+
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+#### 0. Definitions.
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+
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+"This License" refers to version 3 of the GNU General Public License.
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+
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+"Copyright" also means copyright-like laws that apply to other kinds
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+of works, such as semiconductor masks.
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+
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+"The Program" refers to any copyrightable work licensed under this
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+License. Each licensee is addressed as "you". "Licensees" and
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+"recipients" may be individuals or organizations.
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+To "modify" a work means to copy from or adapt all or part of the work
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+A "covered work" means either the unmodified Program or a work based
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+To "propagate" a work means to do anything with it that, without
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+permission, would make you directly or secondarily liable for
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+infringement under applicable copyright law, except executing it on a
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+To "convey" a work means any kind of propagation that enables other
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+An interactive user interface displays "Appropriate Legal Notices" to
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+the extent that it includes a convenient and prominently visible
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+tells the user that there is no warranty for the work (except to the
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+the interface presents a list of user commands or options, such as a
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+menu, a prominent item in the list meets this criterion.
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+
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+#### 1. Source Code.
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+The "source code" for a work means the preferred form of the work for
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+making modifications to it. "Object code" means any non-source form of
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+a work.
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+A "Standard Interface" means an interface that either is an official
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+standard defined by a recognized standards body, or, in the case of
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+is widely used among developers working in that language.
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+The "System Libraries" of an executable work include anything, other
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+than the work as a whole, that (a) is included in the normal form of
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+implementation is available to the public in source code form. A
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+"Major Component", in this context, means a major essential component
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+(if any) on which the executable work runs, or a compiler used to
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+produce the work, or an object code interpreter used to run it.
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+The "Corresponding Source" for a work in object code form means all
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+the source code needed to generate, install, and (for an executable
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+work) run the object code and to modify the work, including scripts to
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+System Libraries, or general-purpose tools or generally available free
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+programs which are used unmodified in performing those activities but
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+such as by intimate data communication or control flow between those
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+subprograms and other parts of the work.
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+
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+The Corresponding Source need not include anything that users can
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+regenerate automatically from other parts of the Corresponding Source.
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+
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+The Corresponding Source for a work in source code form is that same
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+work.
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+
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+#### 2. Basic Permissions.
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+
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+All rights granted under this License are granted for the term of
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+copyright on the Program, and are irrevocable provided the stated
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+conditions are met. This License explicitly affirms your unlimited
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+permission to run the unmodified Program. The output from running a
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+covered work is covered by this License only if the output, given its
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+content, constitutes a covered work. This License acknowledges your
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+rights of fair use or other equivalent, as provided by copyright law.
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+
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+You may make, run and propagate covered works that you do not convey,
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+without conditions so long as your license otherwise remains in force.
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+You may convey covered works to others for the sole purpose of having
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+them make modifications exclusively for you, or provide you with
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+facilities for running those works, provided that you comply with the
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+terms of this License in conveying all material for which you do not
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+control copyright. Those thus making or running the covered works for
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+you must do so exclusively on your behalf, under your direction and
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+control, on terms that prohibit them from making any copies of your
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+copyrighted material outside their relationship with you.
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+
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+Conveying under any other circumstances is permitted solely under the
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+conditions stated below. Sublicensing is not allowed; section 10 makes
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+it unnecessary.
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+
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+#### 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
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+
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+No covered work shall be deemed part of an effective technological
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+measure under any applicable law fulfilling obligations under article
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+11 of the WIPO copyright treaty adopted on 20 December 1996, or
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+similar laws prohibiting or restricting circumvention of such
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+measures.
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+
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+When you convey a covered work, you waive any legal power to forbid
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+circumvention is effected by exercising rights under this License with
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+operation or modification of the work as a means of enforcing, against
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+the work's users, your or third parties' legal rights to forbid
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+circumvention of technological measures.
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+
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+#### 4. Conveying Verbatim Copies.
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+
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+You may convey verbatim copies of the Program's source code as you
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+receive it, in any medium, provided that you conspicuously and
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+appropriately publish on each copy an appropriate copyright notice;
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+keep intact all notices of the absence of any warranty; and give all
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+You may charge any price or no price for each copy that you convey,
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+and you may offer support or warranty protection for a fee.
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+
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+#### 5. Conveying Modified Source Versions.
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+
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+You may convey a work based on the Program, or the modifications to
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+produce it from the Program, in the form of source code under the
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+terms of section 4, provided that you also meet all of these
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+conditions:
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+
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+-   a) The work must carry prominent notices stating that you modified
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+    it, and giving a relevant date.
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+-   b) The work must carry prominent notices stating that it is
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+    released under this License and any conditions added under
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+    section 7. This requirement modifies the requirement in section 4
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+    to "keep intact all notices".
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+-   c) You must license the entire work, as a whole, under this
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+    License to anyone who comes into possession of a copy. This
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+    License will therefore apply, along with any applicable section 7
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+    additional terms, to the whole of the work, and all its parts,
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+    regardless of how they are packaged. This License gives no
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+    permission to license the work in any other way, but it does not
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+    invalidate such permission if you have separately received it.
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+-   d) If the work has interactive user interfaces, each must display
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+    Appropriate Legal Notices; however, if the Program has interactive
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+    interfaces that do not display Appropriate Legal Notices, your
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+    work need not make them do so.
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+
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+A compilation of a covered work with other separate and independent
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+works, which are not by their nature extensions of the covered work,
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+and which are not combined with it such as to form a larger program,
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+in or on a volume of a storage or distribution medium, is called an
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+"aggregate" if the compilation and its resulting copyright are not
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+used to limit the access or legal rights of the compilation's users
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+beyond what the individual works permit. Inclusion of a covered work
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+in an aggregate does not cause this License to apply to the other
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+parts of the aggregate.
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+
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+#### 6. Conveying Non-Source Forms.
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+
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+You may convey a covered work in object code form under the terms of
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+sections 4 and 5, provided that you also convey the machine-readable
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+Corresponding Source under the terms of this License, in one of these
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+ways:
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+
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+-   a) Convey the object code in, or embodied in, a physical product
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+-   d) Convey the object code by offering access from a designated
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+    Corresponding Source. Regardless of what server hosts the
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+-   e) Convey the object code using peer-to-peer transmission,
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+A separable portion of the object code, whose source code is excluded
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+from the Corresponding Source as a System Library, need not be
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+included in conveying the object code work.
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+
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+A "User Product" is either (1) a "consumer product", which means any
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+tangible personal property which is normally used for personal,
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+Product from a modified version of its Corresponding Source. The
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+information must suffice to ensure that the continued functioning of
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+the modified object code is in no case prevented or interfered with
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+solely because modification has been made.
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+
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+If you convey an object code work under this section in, or with, or
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+specifically for use in, a User Product, and the conveying occurs as
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+Corresponding Source conveyed under this section must be accompanied
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+if neither you nor any third party retains the ability to install
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+modified object code on the User Product (for example, the work has
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+been installed in ROM).
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+
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+The requirement to provide Installation Information does not include a
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+requirement to continue to provide support service, warranty, or
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+updates for a work that has been modified or installed by the
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+or violates the rules and protocols for communication across the
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+network.
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+
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+Corresponding Source conveyed, and Installation Information provided,
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+in accord with this section must be in a format that is publicly
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+documented (and with an implementation available to the public in
341
+source code form), and must require no special password or key for
342
+unpacking, reading or copying.
343
+
344
+#### 7. Additional Terms.
345
+
346
+"Additional permissions" are terms that supplement the terms of this
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+License by making exceptions from one or more of its conditions.
348
+Additional permissions that are applicable to the entire Program shall
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+be treated as though they were included in this License, to the extent
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+that they are valid under applicable law. If additional permissions
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+apply only to part of the Program, that part may be used separately
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+under those permissions, but the entire Program remains governed by
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+this License without regard to the additional permissions.
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+
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+When you convey a copy of a covered work, you may at your option
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+it. (Additional permissions may be written to require their own
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+removal in certain cases when you modify the work.) You may place
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+additional permissions on material, added by you to a covered work,
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+for which you have or can give appropriate copyright permission.
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+
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+Notwithstanding any other provision of this License, for material you
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+add to a covered work, you may (if authorized by the copyright holders
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+of that material) supplement the terms of this License with terms:
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+
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+-   a) Disclaiming warranty or limiting liability differently from the
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+    terms of sections 15 and 16 of this License; or
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+-   b) Requiring preservation of specified reasonable legal notices or
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+    author attributions in that material or in the Appropriate Legal
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+    Notices displayed by works containing it; or
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+-   c) Prohibiting misrepresentation of the origin of that material,
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+-   e) Declining to grant rights under trademark law for use of some
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+
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+All other non-permissive additional terms are considered "further
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+restrictions" within the meaning of section 10. If the Program as you
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+received it, or any part of it, contains a notice stating that it is
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+governed by this License along with a term that is a further
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+restriction, you may remove that term. If a license document contains
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+a further restriction but permits relicensing or conveying under this
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+License, you may add to a covered work material governed by the terms
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+not survive such relicensing or conveying.
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+
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+If you add terms to a covered work in accord with this section, you
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+
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+Additional terms, permissive or non-permissive, may be stated in the
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+form of a separately written license, or stated as exceptions; the
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+above requirements apply either way.
402
+
403
+#### 8. Termination.
404
+
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+You may not propagate or modify a covered work except as expressly
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+provided under this License. Any attempt otherwise to propagate or
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+modify it is void, and will automatically terminate your rights under
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+this License (including any patent licenses granted under the third
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+paragraph of section 11).
410
+
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+However, if you cease all violation of this License, then your license
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+from a particular copyright holder is reinstated (a) provisionally,
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+unless and until the copyright holder explicitly and finally
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+terminates your license, and (b) permanently, if the copyright holder
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+fails to notify you of the violation by some reasonable means prior to
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+60 days after the cessation.
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+
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+Moreover, your license from a particular copyright holder is
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+reinstated permanently if the copyright holder notifies you of the
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+violation by some reasonable means, this is the first time you have
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+received notice of violation of this License (for any work) from that
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+copyright holder, and you cure the violation prior to 30 days after
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+your receipt of the notice.
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+
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+Termination of your rights under this section does not terminate the
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+licenses of parties who have received copies or rights from you under
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+this License. If your rights have been terminated and not permanently
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+reinstated, you do not qualify to receive new licenses for the same
429
+material under section 10.
430
+
431
+#### 9. Acceptance Not Required for Having Copies.
432
+
433
+You are not required to accept this License in order to receive or run
434
+a copy of the Program. Ancillary propagation of a covered work
435
+occurring solely as a consequence of using peer-to-peer transmission
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+to receive a copy likewise does not require acceptance. However,
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+nothing other than this License grants you permission to propagate or
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+modify any covered work. These actions infringe copyright if you do
439
+not accept this License. Therefore, by modifying or propagating a
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+covered work, you indicate your acceptance of this License to do so.
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+
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+#### 10. Automatic Licensing of Downstream Recipients.
443
+
444
+Each time you convey a covered work, the recipient automatically
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+receives a license from the original licensors, to run, modify and
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+propagate that work, subject to this License. You are not responsible
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+for enforcing compliance by third parties with this License.
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+
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+An "entity transaction" is a transaction transferring control of an
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+organization, or substantially all assets of one, or subdividing an
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456
+Corresponding Source of the work from the predecessor in interest, if
457
+the predecessor has it or can get it with reasonable efforts.
458
+
459
+You may not impose any further restrictions on the exercise of the
460
+rights granted or affirmed under this License. For example, you may
461
+not impose a license fee, royalty, or other charge for exercise of
462
+rights granted under this License, and you may not initiate litigation
463
+(including a cross-claim or counterclaim in a lawsuit) alleging that
464
+any patent claim is infringed by making, using, selling, offering for
465
+sale, or importing the Program or any portion of it.
466
+
467
+#### 11. Patents.
468
+
469
+A "contributor" is a copyright holder who authorizes use under this
470
+License of the Program or a work on which the Program is based. The
471
+work thus licensed is called the contributor's "contributor version".
472
+
473
+A contributor's "essential patent claims" are all patent claims owned
474
+or controlled by the contributor, whether already acquired or
475
+hereafter acquired, that would be infringed by some manner, permitted
476
+by this License, of making, using, or selling its contributor version,
477
+but do not include claims that would be infringed only as a
478
+consequence of further modification of the contributor version. For
479
+purposes of this definition, "control" includes the right to grant
480
+patent sublicenses in a manner consistent with the requirements of
481
+this License.
482
+
483
+Each contributor grants you a non-exclusive, worldwide, royalty-free
484
+patent license under the contributor's essential patent claims, to
485
+make, use, sell, offer for sale, import and otherwise run, modify and
486
+propagate the contents of its contributor version.
487
+
488
+In the following three paragraphs, a "patent license" is any express
489
+agreement or commitment, however denominated, not to enforce a patent
490
+(such as an express permission to practice a patent or covenant not to
491
+sue for patent infringement). To "grant" such a patent license to a
492
+party means to make such an agreement or commitment not to enforce a
493
+patent against the party.
494
+
495
+If you convey a covered work, knowingly relying on a patent license,
496
+and the Corresponding Source of the work is not available for anyone
497
+to copy, free of charge and under the terms of this License, through a
498
+publicly available network server or other readily accessible means,
499
+then you must either (1) cause the Corresponding Source to be so
500
+available, or (2) arrange to deprive yourself of the benefit of the
501
+patent license for this particular work, or (3) arrange, in a manner
502
+consistent with the requirements of this License, to extend the patent
503
+license to downstream recipients. "Knowingly relying" means you have
504
+actual knowledge that, but for the patent license, your conveying the
505
+covered work in a country, or your recipient's use of the covered work
506
+in a country, would infringe one or more identifiable patents in that
507
+country that you have reason to believe are valid.
508
+
509
+If, pursuant to or in connection with a single transaction or
510
+arrangement, you convey, or propagate by procuring conveyance of, a
511
+covered work, and grant a patent license to some of the parties
512
+receiving the covered work authorizing them to use, propagate, modify
513
+or convey a specific copy of the covered work, then the patent license
514
+you grant is automatically extended to all recipients of the covered
515
+work and works based on it.
516
+
517
+A patent license is "discriminatory" if it does not include within the
518
+scope of its coverage, prohibits the exercise of, or is conditioned on
519
+the non-exercise of one or more of the rights that are specifically
520
+granted under this License. You may not convey a covered work if you
521
+are a party to an arrangement with a third party that is in the
522
+business of distributing software, under which you make payment to the
523
+third party based on the extent of your activity of conveying the
524
+work, and under which the third party grants, to any of the parties
525
+who would receive the covered work from you, a discriminatory patent
526
+license (a) in connection with copies of the covered work conveyed by
527
+you (or copies made from those copies), or (b) primarily for and in
528
+connection with specific products or compilations that contain the
529
+covered work, unless you entered into that arrangement, or that patent
530
+license was granted, prior to 28 March 2007.
531
+
532
+Nothing in this License shall be construed as excluding or limiting
533
+any implied license or other defenses to infringement that may
534
+otherwise be available to you under applicable patent law.
535
+
536
+#### 12. No Surrender of Others' Freedom.
537
+
538
+If conditions are imposed on you (whether by court order, agreement or
539
+otherwise) that contradict the conditions of this License, they do not
540
+excuse you from the conditions of this License. If you cannot convey a
541
+covered work so as to satisfy simultaneously your obligations under
542
+this License and any other pertinent obligations, then as a
543
+consequence you may not convey it at all. For example, if you agree to
544
+terms that obligate you to collect a royalty for further conveying
545
+from those to whom you convey the Program, the only way you could
546
+satisfy both those terms and this License would be to refrain entirely
547
+from conveying the Program.
548
+
549
+#### 13. Use with the GNU Affero General Public License.
550
+
551
+Notwithstanding any other provision of this License, you have
552
+permission to link or combine any covered work with a work licensed
553
+under version 3 of the GNU Affero General Public License into a single
554
+combined work, and to convey the resulting work. The terms of this
555
+License will continue to apply to the part which is the covered work,
556
+but the special requirements of the GNU Affero General Public License,
557
+section 13, concerning interaction through a network will apply to the
558
+combination as such.
559
+
560
+#### 14. Revised Versions of this License.
561
+
562
+The Free Software Foundation may publish revised and/or new versions
563
+of the GNU General Public License from time to time. Such new versions
564
+will be similar in spirit to the present version, but may differ in
565
+detail to address new problems or concerns.
566
+
567
+Each version is given a distinguishing version number. If the Program
568
+specifies that a certain numbered version of the GNU General Public
569
+License "or any later version" applies to it, you have the option of
570
+following the terms and conditions either of that numbered version or
571
+of any later version published by the Free Software Foundation. If the
572
+Program does not specify a version number of the GNU General Public
573
+License, you may choose any version ever published by the Free
574
+Software Foundation.
575
+
576
+If the Program specifies that a proxy can decide which future versions
577
+of the GNU General Public License can be used, that proxy's public
578
+statement of acceptance of a version permanently authorizes you to
579
+choose that version for the Program.
580
+
581
+Later license versions may give you additional or different
582
+permissions. However, no additional obligations are imposed on any
583
+author or copyright holder as a result of your choosing to follow a
584
+later version.
585
+
586
+#### 15. Disclaimer of Warranty.
587
+
588
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
589
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
590
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
591
+WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
592
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
593
+A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
594
+PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
595
+DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
596
+CORRECTION.
597
+
598
+#### 16. Limitation of Liability.
599
+
600
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
601
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
602
+CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
603
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
604
+ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
605
+NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
606
+LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
607
+TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
608
+PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
609
+
610
+#### 17. Interpretation of Sections 15 and 16.
611
+
612
+If the disclaimer of warranty and limitation of liability provided
613
+above cannot be given local legal effect according to their terms,
614
+reviewing courts shall apply local law that most closely approximates
615
+an absolute waiver of all civil liability in connection with the
616
+Program, unless a warranty or assumption of liability accompanies a
617
+copy of the Program in return for a fee.
618
+
619
+END OF TERMS AND CONDITIONS
620
+
621
+### How to Apply These Terms to Your New Programs
622
+
623
+If you develop a new program, and you want it to be of the greatest
624
+possible use to the public, the best way to achieve this is to make it
625
+free software which everyone can redistribute and change under these
626
+terms.
627
+
628
+To do so, attach the following notices to the program. It is safest to
629
+attach them to the start of each source file to most effectively state
630
+the exclusion of warranty; and each file should have at least the
631
+"copyright" line and a pointer to where the full notice is found.
632
+
633
+        <one line to give the program's name and a brief idea of what it does.>
634
+        Copyright (C) <year>  <name of author>
635
+
636
+        This program is free software: you can redistribute it and/or modify
637
+        it under the terms of the GNU General Public License as published by
638
+        the Free Software Foundation, either version 3 of the License, or
639
+        (at your option) any later version.
640
+
641
+        This program is distributed in the hope that it will be useful,
642
+        but WITHOUT ANY WARRANTY; without even the implied warranty of
643
+        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
644
+        GNU General Public License for more details.
645
+
646
+        You should have received a copy of the GNU General Public License
647
+        along with this program.  If not, see <https://www.gnu.org/licenses/>.
648
+
649
+Also add information on how to contact you by electronic and paper
650
+mail.
651
+
652
+If the program does terminal interaction, make it output a short
653
+notice like this when it starts in an interactive mode:
654
+
655
+        <program>  Copyright (C) <year>  <name of author>
656
+        This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657
+        This is free software, and you are welcome to redistribute it
658
+        under certain conditions; type `show c' for details.
659
+
660
+The hypothetical commands \`show w' and \`show c' should show the
661
+appropriate parts of the General Public License. Of course, your
662
+program's commands might be different; for a GUI interface, you would
663
+use an "about box".
664
+
665
+You should also get your employer (if you work as a programmer) or
666
+school, if any, to sign a "copyright disclaimer" for the program, if
667
+necessary. For more information on this, and how to apply and follow
668
+the GNU GPL, see <https://www.gnu.org/licenses/>.
669
+
670
+The GNU General Public License does not permit incorporating your
671
+program into proprietary programs. If your program is a subroutine
672
+library, you may consider it more useful to permit linking proprietary
673
+applications with the library. If this is what you want to do, use the
674
+GNU Lesser General Public License instead of this License. But first,
675
+please read <https://www.gnu.org/licenses/why-not-lgpl.html>.

+ 5
- 0
README.md View File

@@ -0,0 +1,5 @@
1
+# afu-group-trainer
2
+
3
+Diese Software soll das gemeinsame Lernen für die AFU-Prüfung ermöglichen. Die Idee ist, dass bei einem Lernabend jeder die Frage beantwortet, anstatt dass sich nur einer meldet. Dadurch sollen Schwächen schneller erkannt und der Lerneffekt verbessert werden.
4
+
5
+

+ 6228
- 0
backend/assets/BetriebstechnikVorschriften.json
File diff suppressed because it is too large
View File


+ 5100
- 0
backend/assets/TechnikE.json
File diff suppressed because it is too large
View File


+ 25
- 0
backend/main.js View File

@@ -0,0 +1,25 @@
1
+// Configuration
2
+const websocketPort = 63605;
3
+const tlsConfig = {
4
+    useTLS: false,
5
+    cert: "",
6
+    key: "",
7
+};
8
+const users = [
9
+    {
10
+        username: "root",
11
+        password: "root",
12
+    },
13
+];
14
+const pingTest = 20000;
15
+const debug = false;
16
+// End of configuration
17
+
18
+console.log("Starting afu-group-trainer server");
19
+
20
+const serverManagerModule = require("./serverManager");
21
+let serverManager = new serverManagerModule.ServerManager(websocketPort, tlsConfig, users, pingTest, debug);
22
+serverManager.loadQuestions("assets/TechnikE.json");
23
+serverManager.loadQuestions("assets/BetriebstechnikVorschriften.json");
24
+
25
+console.log("Startup complete, loaded " + serverManager.getTotalQuestions() + " questions.");

+ 79
- 0
backend/package-lock.json View File

@@ -0,0 +1,79 @@
1
+{
2
+  "name": "backend",
3
+  "version": "0.2.0",
4
+  "lockfileVersion": 1,
5
+  "requires": true,
6
+  "dependencies": {
7
+    "assertion-error": {
8
+      "version": "1.1.0",
9
+      "resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-1.1.0.tgz",
10
+      "integrity": "sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==",
11
+      "dev": true
12
+    },
13
+    "async-limiter": {
14
+      "version": "1.0.0",
15
+      "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.0.tgz",
16
+      "integrity": "sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg=="
17
+    },
18
+    "chai": {
19
+      "version": "4.2.0",
20
+      "resolved": "https://registry.npmjs.org/chai/-/chai-4.2.0.tgz",
21
+      "integrity": "sha512-XQU3bhBukrOsQCuwZndwGcCVQHyZi53fQ6Ys1Fym7E4olpIqqZZhhoFJoaKVvV17lWQoXYwgWN2nF5crA8J2jw==",
22
+      "dev": true,
23
+      "requires": {
24
+        "assertion-error": "^1.1.0",
25
+        "check-error": "^1.0.2",
26
+        "deep-eql": "^3.0.1",
27
+        "get-func-name": "^2.0.0",
28
+        "pathval": "^1.1.0",
29
+        "type-detect": "^4.0.5"
30
+      }
31
+    },
32
+    "check-error": {
33
+      "version": "1.0.2",
34
+      "resolved": "https://registry.npmjs.org/check-error/-/check-error-1.0.2.tgz",
35
+      "integrity": "sha1-V00xLt2Iu13YkS6Sht1sCu1KrII=",
36
+      "dev": true
37
+    },
38
+    "deep-eql": {
39
+      "version": "3.0.1",
40
+      "resolved": "https://registry.npmjs.org/deep-eql/-/deep-eql-3.0.1.tgz",
41
+      "integrity": "sha512-+QeIQyN5ZuO+3Uk5DYh6/1eKO0m0YmJFGNmFHGACpf1ClL1nmlV/p4gNgbl2pJGxgXb4faqo6UE+M5ACEMyVcw==",
42
+      "dev": true,
43
+      "requires": {
44
+        "type-detect": "^4.0.0"
45
+      }
46
+    },
47
+    "get-func-name": {
48
+      "version": "2.0.0",
49
+      "resolved": "https://registry.npmjs.org/get-func-name/-/get-func-name-2.0.0.tgz",
50
+      "integrity": "sha1-6td0q+5y4gQJQzoGY2YCPdaIekE=",
51
+      "dev": true
52
+    },
53
+    "pathval": {
54
+      "version": "1.1.0",
55
+      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.0.tgz",
56
+      "integrity": "sha1-uULm1L3mUwBe9rcTYd74cn0GReA=",
57
+      "dev": true
58
+    },
59
+    "type-detect": {
60
+      "version": "4.0.8",
61
+      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
62
+      "integrity": "sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==",
63
+      "dev": true
64
+    },
65
+    "uuid": {
66
+      "version": "3.3.2",
67
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
68
+      "integrity": "sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA=="
69
+    },
70
+    "ws": {
71
+      "version": "6.1.2",
72
+      "resolved": "https://registry.npmjs.org/ws/-/ws-6.1.2.tgz",
73
+      "integrity": "sha512-rfUqzvz0WxmSXtJpPMX2EeASXabOrSMk1ruMOV3JBTBjo4ac2lDjGGsbQSyxj8Odhw5fBib8ZKEjDNvgouNKYw==",
74
+      "requires": {
75
+        "async-limiter": "~1.0.0"
76
+      }
77
+    }
78
+  }
79
+}

+ 19
- 0
backend/package.json View File

@@ -0,0 +1,19 @@
1
+{
2
+  "name": "backend",
3
+  "version": "0.2.0",
4
+  "description": "The backend for afu-group-trainer",
5
+  "main": "main.js",
6
+  "scripts": {
7
+    "backend": "node main.js",
8
+    "test": "mocha tests"
9
+  },
10
+  "author": "Christian Friedrich Coors (DL5LQ) <me@dl5lq.de>",
11
+  "license": "GPL-3.0-or-later",
12
+  "dependencies": {
13
+    "uuid": "^3.3.2",
14
+    "ws": "^6.1.2"
15
+  },
16
+  "devDependencies": {
17
+    "chai": "^4.2.0"
18
+  }
19
+}

+ 82
- 0
backend/questionManager.js View File

@@ -0,0 +1,82 @@
1
+const fs = require("fs");
2
+
3
+let QuestionManager = function () {
4
+    this.root_node = {
5
+        uuid: "",
6
+        id: "",
7
+        name: "",
8
+        prefix: "",
9
+        children: [],
10
+        questions: [],
11
+    };
12
+};
13
+
14
+QuestionManager.prototype.readQuestions = function (path) {
15
+    let data = fs.readFileSync(path);
16
+    this.root_node.children = this.root_node.children.concat(JSON.parse(data).children);
17
+};
18
+
19
+QuestionManager.prototype.countAllQuestions = function () {
20
+    let ret = 0;
21
+    this.root_node.children.forEach(function (c) {
22
+        ret += this.countQuestions(c);
23
+    }.bind(this));
24
+    return ret;
25
+};
26
+
27
+QuestionManager.prototype.countQuestions = function (category) {
28
+    let ret = category.questions.length;
29
+    category.children.forEach(function (c) {
30
+        ret += this.countQuestions(c);
31
+    }.bind(this));
32
+    return ret;
33
+};
34
+
35
+QuestionManager.prototype.getDatabase = function () {
36
+    return this.root_node;
37
+};
38
+
39
+QuestionManager.prototype.getQuestions = function (category) {
40
+    let questions = category.questions;
41
+    category.children.forEach(function (child) {
42
+        let newQuestions = this.getQuestions(child);
43
+        questions = questions.concat(newQuestions);
44
+    }.bind(this));
45
+    return questions;
46
+};
47
+
48
+QuestionManager.prototype.findByUUID = function (node, uuid) {
49
+    if (node.uuid === uuid) {
50
+        return node;
51
+    } else {
52
+        let question = node.questions.find(q => q.uuid === uuid);
53
+        if (question) {
54
+            return question;
55
+        }
56
+
57
+        for (let i = 0; i < node.children.length; i++) {
58
+            let res = this.findByUUID(node.children[i], uuid);
59
+            if (res) {
60
+                return res;
61
+            }
62
+        }
63
+
64
+        return null;
65
+    }
66
+};
67
+
68
+QuestionManager.prototype.getQuestionList = function (uuid) {
69
+    let root = this.findByUUID(this.root_node, uuid);
70
+
71
+    if (!root) {
72
+        return null;
73
+    }
74
+
75
+    if (root.question) {
76
+        return [root];
77
+    } else {
78
+        return this.getQuestions(root, uuid);
79
+    }
80
+};
81
+
82
+exports.QuestionManager = QuestionManager;

+ 180
- 0
backend/roomManager.js View File

@@ -0,0 +1,180 @@
1
+const uuidv4 = require("uuid/v4");
2
+const util = require("./util");
3
+
4
+const ROOM_STATE = Object.freeze({"IDLE": 0, "QUESTION": 1, "RESULTS": 2});
5
+
6
+let RoomManager = function (callback, removeCallback, roomCallback) {
7
+    this.rooms = [];
8
+    this.callback = callback;
9
+    this.removeCallback = removeCallback;
10
+    this.roomCallback = roomCallback;
11
+};
12
+
13
+RoomManager.prototype.getRoomByUUID = function (roomUUID) {
14
+    return this.rooms.find(r => r.uuid === roomUUID);
15
+};
16
+
17
+RoomManager.prototype.getRoomByName = function (roomName) {
18
+    return this.rooms.find(r => r.name === roomName);
19
+};
20
+
21
+RoomManager.prototype.getRoomByUser = function (user) {
22
+    return this.rooms.find(r => r.members.includes(user));
23
+};
24
+
25
+RoomManager.prototype.getRoomByUserAdmin = function (user) {
26
+    return this.rooms.find(r => r.members.includes(user) && r.members[0] === user);
27
+};
28
+
29
+RoomManager.prototype.addRoom = function (roomName, user, password) {
30
+    this.removeUser(user);
31
+
32
+    roomName = roomName.trim();
33
+
34
+    let room = this.getRoomByName(roomName);
35
+    if (roomName === "" || room) {
36
+        throw "Can not create room with this name";
37
+    }
38
+
39
+    let newRoom = {
40
+        uuid: uuidv4(),
41
+        name: roomName,
42
+        password: password,
43
+        members: [user],
44
+        state: ROOM_STATE.IDLE,
45
+        queue: [],
46
+        initialQueueLength: 0,
47
+        currentQuestion: null,
48
+        correctAnswer: -1,
49
+        results: [],
50
+    };
51
+
52
+    this.rooms.push(newRoom);
53
+    this.callback();
54
+
55
+    return newRoom;
56
+};
57
+
58
+RoomManager.prototype.startQuestions = function (room, questions) {
59
+    room.queue = JSON.parse(JSON.stringify(questions)); // Ugh. JavaScript.
60
+    if (Array.isArray(room.queue)) {
61
+        room.initialQueueLength = room.queue.length;
62
+    } else {
63
+        room.initialQueueLength = 0;
64
+    }
65
+    room.currentQuestion = null;
66
+    room.correctAnswer = -1;
67
+    this.nextQuestion(room);
68
+};
69
+
70
+RoomManager.prototype.showResults = function (room) {
71
+    if (room.state !== ROOM_STATE.QUESTION) {
72
+        return;
73
+    }
74
+    room.results = [0, 0, 0, 0];
75
+    room.members.forEach(function (m) {
76
+        if (m.selectedAnswer !== -1) {
77
+            room.results[m.selectedAnswer]++;
78
+        }
79
+    });
80
+    room.state = ROOM_STATE.RESULTS;
81
+    this.roomCallback(room);
82
+};
83
+
84
+RoomManager.prototype.nextQuestion = function (room) {
85
+    room.state = ROOM_STATE.QUESTION;
86
+    room.members.forEach(function (m) {
87
+        m.selectedAnswer = -1;
88
+    });
89
+    if (Array.isArray(room.queue)) {
90
+        if (room.queue.length > 0) {
91
+            room.currentQuestion = room.queue.shift();
92
+            let correctAnswer = room.currentQuestion.answers[0];
93
+            util.shuffle(room.currentQuestion.answers);
94
+            room.correctAnswer = room.currentQuestion.answers.indexOf(correctAnswer);
95
+        } else {
96
+            this.endQuestions(room);
97
+        }
98
+    }
99
+    this.roomCallback(room);
100
+};
101
+
102
+RoomManager.prototype.endQuestions = function (room) {
103
+    room.state = ROOM_STATE.IDLE;
104
+    room.queue = [];
105
+    room.currentQuestion = null;
106
+    room.correctAnswer = -1;
107
+    room.initialQueueLength = 0;
108
+    this.roomCallback(room);
109
+};
110
+
111
+RoomManager.prototype.addUser = function (room, user, password) {
112
+    this.removeUser(user);
113
+
114
+    user.selectedAnswer = -1;
115
+
116
+    if (room) {
117
+        if (room.password || password) {
118
+            if (room.password !== password) {
119
+                throw "Incorrect password";
120
+            }
121
+        }
122
+
123
+        room.members.push(user);
124
+    }
125
+
126
+    this.callback();
127
+};
128
+
129
+RoomManager.prototype.getRoomList = function () {
130
+    return this.rooms.map(function (r) {
131
+        return {
132
+            uuid: r.uuid,
133
+            name: r.name,
134
+            users: r.members.length,
135
+            password_required: r.password !== "",
136
+        }
137
+    })
138
+};
139
+
140
+RoomManager.prototype.cleanUpRooms = function () {
141
+    while (this.rooms.find(r => r.members.length === 0)) {
142
+        let room = this.rooms.find(r => r.members.length === 0);
143
+        let index = this.rooms.indexOf(room);
144
+        if (index > -1) {
145
+            this.rooms.splice(index, 1);
146
+        } else {
147
+            break;
148
+        }
149
+    }
150
+};
151
+
152
+RoomManager.prototype.removeUser = function (user) {
153
+    let room = this.getRoomByUser(user);
154
+
155
+    if (room) {
156
+        if (room.members.length >= 1 && room.members[0] === user) {
157
+            let index = this.rooms.indexOf(room);
158
+            if (index > -1) {
159
+                this.rooms.splice(index, 1);
160
+            }
161
+            for (let i = 1; i < room.members.length; i++) {
162
+                this.removeCallback(room.members[i]);
163
+            }
164
+        } else {
165
+            let index = room.members.indexOf(user);
166
+            if (index > -1) {
167
+                room.members.splice(index, 1);
168
+            }
169
+            this.roomCallback(room);
170
+        }
171
+
172
+        this.cleanUpRooms();
173
+        this.callback();
174
+    }
175
+};
176
+
177
+module.exports = {
178
+    RoomManager,
179
+    ROOM_STATE
180
+};

+ 317
- 0
backend/serverManager.js View File

@@ -0,0 +1,317 @@
1
+const fs = require("fs");
2
+const https = require("https");
3
+
4
+const WebSocket = require("ws");
5
+
6
+const qm = require("./questionManager");
7
+const rm = require("./roomManager");
8
+const util = require("./util");
9
+
10
+function noop() {
11
+}
12
+
13
+function heartbeat() {
14
+    this.isAlive = true;
15
+}
16
+
17
+let ServerManager = function (port, tlsConfig, users, pingTest, debug) {
18
+    this.users = users;
19
+    if (!Array.isArray(this.users) || this.users.length === 0) {
20
+        throw "No users configured!";
21
+    }
22
+
23
+    if (tlsConfig.useTLS) {
24
+        let server = new https.createServer({
25
+            cert: fs.readFileSync(tlsConfig.cert),
26
+            key: fs.readFileSync(tlsConfig.key)
27
+        });
28
+        this.wss = new WebSocket.Server({
29
+            clientTracking: true,
30
+            server: server
31
+        });
32
+        server.listen(port);
33
+    } else {
34
+        this.wss = new WebSocket.Server({
35
+            port: port,
36
+            clientTracking: true,
37
+        });
38
+    }
39
+
40
+    this.wss.on("connection", function connection(ws) {
41
+        ws.isAlive = true;
42
+        ws.loggedIn = false;
43
+        ws.on("pong", heartbeat);
44
+
45
+        ws.on("message", function (data) {
46
+            this.onClientMessage(ws, data, debug);
47
+        }.bind(this));
48
+
49
+        ws.on("close", function connection() {
50
+            this.roomManager.removeUser(ws);
51
+        }.bind(this));
52
+
53
+        this.callback();
54
+    }.bind(this));
55
+
56
+    if (pingTest) {
57
+        this.pingInterval = setInterval(function ping() {
58
+            this.wss.clients.forEach(function (ws) {
59
+                if (ws.isAlive === false) return ws.terminate();
60
+
61
+                ws.isAlive = false;
62
+                ws.ping(noop);
63
+            }.bind(this));
64
+        }.bind(this), pingTest);
65
+    }
66
+
67
+    this.questionManager = new qm.QuestionManager();
68
+    this.roomManager = new rm.RoomManager(this.callback.bind(this), this.removeUserFromRoom.bind(this), this.sendRoomStatus.bind(this));
69
+
70
+};
71
+
72
+ServerManager.prototype.broadcast = function (data) {
73
+    this.wss.clients.forEach(function each(client) {
74
+        if (client.readyState === WebSocket.OPEN) client.send(data);
75
+    });
76
+};
77
+
78
+ServerManager.prototype.callback = function () {
79
+    let rooms = this.roomManager.getRoomList();
80
+
81
+    this.broadcast(JSON.stringify({
82
+        RoomList: rooms
83
+    }));
84
+};
85
+
86
+ServerManager.prototype.removeUserFromRoom = function (client) {
87
+    if (client.readyState === WebSocket.OPEN) {
88
+        client.send(JSON.stringify("LeaveRoom"));
89
+    }
90
+};
91
+
92
+ServerManager.prototype.sendRoomStatus = function (room, user) {
93
+    let msg = "";
94
+    let remainingQuestions = Array.isArray(room.queue) ? room.queue.length : 0;
95
+    switch (room.state) {
96
+        case rm.ROOM_STATE.IDLE:
97
+            msg = JSON.stringify({
98
+                RoomState: {
99
+                    state: room.state,
100
+                    remainingQuestions: remainingQuestions,
101
+                    initialQuestionLength: room.initialQueueLength,
102
+                }
103
+            });
104
+            break;
105
+        case rm.ROOM_STATE.QUESTION:
106
+            msg = JSON.stringify({
107
+                RoomState: {
108
+                    state: room.state,
109
+                    remainingQuestions: remainingQuestions,
110
+                    initialQuestionLength: room.initialQueueLength,
111
+                    question: room.currentQuestion,
112
+                }
113
+            });
114
+            break;
115
+        case rm.ROOM_STATE.RESULTS:
116
+            msg = JSON.stringify({
117
+                RoomState: {
118
+                    state: room.state,
119
+                    remainingQuestions: remainingQuestions,
120
+                    initialQuestionLength: room.initialQueueLength,
121
+                    question: room.currentQuestion,
122
+                    results: {
123
+                        totalUsers: room.members.length - 1,
124
+                        correctAnswer: room.correctAnswer,
125
+                        selected: room.results,
126
+                    },
127
+                }
128
+            });
129
+            break;
130
+    }
131
+
132
+    if (user && user.readyState === WebSocket.OPEN) {
133
+        user.send(msg);
134
+    } else {
135
+        room.members.forEach(function (user) {
136
+            if (user.readyState === WebSocket.OPEN) user.send(msg);
137
+        });
138
+    }
139
+
140
+    let admin = room.members[0];
141
+    if (admin.readyState === WebSocket.OPEN) {
142
+        admin.send(JSON.stringify({
143
+            AdminRoomStatus: {
144
+                selected: room.members.filter(m => m.selectedAnswer !== -1).length,
145
+                total: room.members.length - 1
146
+            }
147
+        }));
148
+    }
149
+};
150
+
151
+ServerManager.prototype.sendDatabase = function (client) {
152
+    if (client.readyState === WebSocket.OPEN) {
153
+        client.send(JSON.stringify({
154
+            QuestionDatabase: this.questionManager.getDatabase()
155
+        }));
156
+    }
157
+};
158
+
159
+ServerManager.prototype.loadQuestions = function (file) {
160
+    this.questionManager.readQuestions(file);
161
+};
162
+
163
+ServerManager.prototype.getTotalQuestions = function () {
164
+    return this.questionManager.countAllQuestions();
165
+};
166
+
167
+ServerManager.prototype.onClientMessage = function (client, data, debug) {
168
+    try {
169
+        if (debug) {
170
+            console.log("DEBUG: Received " + data);
171
+        }
172
+        let json = JSON.parse(data);
173
+        if (json.Login) {
174
+            let username = json.Login.username;
175
+            let password = json.Login.password;
176
+
177
+            let found_user = this.users.find(u => u.username === username && u.password === password);
178
+            if (found_user) {
179
+                client.loggedIn = true;
180
+                client.selectedAnswer = -1;
181
+                this.sendLoginResult(client, true);
182
+                this.sendDatabase(client);
183
+            } else {
184
+                this.sendLoginResult(client, false);
185
+            }
186
+        } else if (json.CreateRoom) {
187
+            let roomName = json.CreateRoom.room_name;
188
+            let password = json.CreateRoom.password;
189
+
190
+            if (!client.loggedIn) {
191
+                this.sendCreateRoomResult(client, false, "");
192
+            } else {
193
+                try {
194
+                    let room = this.roomManager.addRoom(roomName, client, password);
195
+                    this.sendCreateRoomResult(client, true, room.uuid);
196
+                } catch (e) {
197
+                    this.sendCreateRoomResult(client, false, "");
198
+                }
199
+            }
200
+        } else if (json.JoinRoom) {
201
+            let roomUUID = json.JoinRoom.room_uuid;
202
+            let password = json.JoinRoom.password;
203
+
204
+            let joinRoom = this.roomManager.getRoomByUUID(roomUUID);
205
+            let currentRoom = this.roomManager.getRoomByUser(client);
206
+            if (currentRoom && currentRoom !== joinRoom) {
207
+                this.roomManager.removeUser(client);
208
+            }
209
+
210
+            if (joinRoom && joinRoom !== currentRoom) {
211
+                try {
212
+                    this.roomManager.addUser(joinRoom, client, password);
213
+                    this.sendJoinRoomResult(client, true);
214
+                    this.sendRoomStatus(joinRoom, client);
215
+                } catch (e) {
216
+                    this.sendJoinRoomResult(client, false);
217
+                }
218
+            } else {
219
+                this.sendJoinRoomResult(client, joinRoom === currentRoom);
220
+            }
221
+        } else if (json === "LeaveRoom" || json.LeaveRoom) {
222
+            this.roomManager.removeUser(client);
223
+        } else if (json.StartQuestions) {
224
+            let mode = json.StartQuestions.mode;
225
+            let start_uuid = json.StartQuestions.start_uuid;
226
+            let shuffle = json.StartQuestions.shuffle;
227
+            let ignore_outdated = json.StartQuestions.ignore_outdated;
228
+
229
+            let adminRoom = this.roomManager.getRoomByUserAdmin(client);
230
+            if (client.loggedIn && adminRoom) {
231
+                let questions = null;
232
+                if (mode === "uuid") {
233
+                    questions = this.questionManager.getQuestionList(start_uuid);
234
+                    if (ignore_outdated && questions.length > 1) {
235
+                        questions = questions.filter(q => !q.outdated);
236
+                    }
237
+                    if (shuffle) {
238
+                        util.shuffle(questions);
239
+                    }
240
+                }
241
+                this.roomManager.startQuestions(adminRoom, questions);
242
+            }
243
+        } else if (json === "ShowResults" || json.ShowResults) {
244
+            let adminRoom = this.roomManager.getRoomByUserAdmin(client);
245
+            if (client.loggedIn && adminRoom) {
246
+                this.roomManager.showResults(adminRoom);
247
+            }
248
+        } else if (json === "NextQuestion" || json.NextQuestion) {
249
+            let adminRoom = this.roomManager.getRoomByUserAdmin(client);
250
+            if (client.loggedIn && adminRoom) {
251
+                this.roomManager.nextQuestion(adminRoom);
252
+            }
253
+        } else if (json === "EndQuestions" || json.EndQuestions) {
254
+            let adminRoom = this.roomManager.getRoomByUserAdmin(client);
255
+            if (client.loggedIn && adminRoom) {
256
+                this.roomManager.endQuestions(adminRoom);
257
+            }
258
+        } else if (json.AnswerQuestion) {
259
+            let answer = parseInt(json.AnswerQuestion.id);
260
+            if (answer < 0 || answer > 3) {
261
+                answer = -1;
262
+            }
263
+            client.selectedAnswer = answer;
264
+            let room = this.roomManager.getRoomByUser(client);
265
+            if (room) {
266
+                this.sendRoomStatus(room, room.members[0]);
267
+            }
268
+        } else {
269
+            this.sendError(client, "Command not found");
270
+        }
271
+    } catch (e) {
272
+        let msg = e.toString();
273
+        this.sendError(client, msg);
274
+    }
275
+};
276
+
277
+ServerManager.prototype.sendLoginResult = function (ws, success) {
278
+    if (ws.readyState !== WebSocket.OPEN) {
279
+        return;
280
+    }
281
+    ws.send(JSON.stringify({
282
+        LoginResult: success,
283
+    }));
284
+};
285
+
286
+ServerManager.prototype.sendJoinRoomResult = function (ws, success) {
287
+    if (ws.readyState !== WebSocket.OPEN) {
288
+        return;
289
+    }
290
+    ws.send(JSON.stringify({
291
+        JoinRoomResult: success,
292
+    }));
293
+};
294
+
295
+ServerManager.prototype.sendCreateRoomResult = function (ws, success, uuid) {
296
+    if (ws.readyState !== WebSocket.OPEN) {
297
+        return;
298
+    }
299
+    ws.send(JSON.stringify({
300
+        CreateRoomResult: {
301
+            success: success,
302
+            uuid: uuid,
303
+        }
304
+    }));
305
+};
306
+
307
+ServerManager.prototype.sendError = function (client, message) {
308
+    if (client.readyState === WebSocket.OPEN) {
309
+        client.send(JSON.stringify({
310
+            Error: {
311
+                message: message
312
+            }
313
+        }));
314
+    }
315
+};
316
+
317
+exports.ServerManager = ServerManager;

+ 60
- 0
backend/tests/test_qm.js View File

@@ -0,0 +1,60 @@
1
+var chai = require("chai");
2
+var expect = chai.expect;
3
+var question_manager = require("../questionManager");
4
+
5
+function getUUIDs(category) {
6
+  let uuids = [category.uuid];
7
+  category.questions.forEach(function (q) {
8
+    uuids.push(q.uuid);
9
+  });
10
+
11
+  category.children.forEach(function (child) {
12
+    let new_uuids = getUUIDs(child);
13
+    uuids = uuids.concat(new_uuids);
14
+  }.bind(this));
15
+  return uuids;
16
+}
17
+
18
+describe("QuestionManager test", function() {
19
+  it("Empty database", function() {
20
+    let qm = new question_manager.QuestionManager();
21
+    expect(qm.countAllQuestions()).to.equal(0);
22
+    expect(qm.getDatabase().children.length).to.equal(0);
23
+  });
24
+
25
+  it("Load questions", function() {
26
+    let qm = new question_manager.QuestionManager();
27
+    qm.readQuestions("assets/TechnikE.json");
28
+    let questionCount = qm.countAllQuestions();
29
+    expect(questionCount).to.not.equal(2);
30
+    expect(qm.getDatabase().length).to.not.equal(0);
31
+    qm.readQuestions("assets/BetriebstechnikVorschriften.json");
32
+    expect(qm.countAllQuestions() > questionCount).to.equal(true);
33
+  });
34
+
35
+  it("Unique UUIDs", function() {
36
+    let qm = new question_manager.QuestionManager();
37
+    qm.readQuestions("assets/TechnikE.json");
38
+    expect(qm.countAllQuestions()).to.equal(377);
39
+    qm.readQuestions("assets/BetriebstechnikVorschriften.json");
40
+    expect(qm.countAllQuestions()).to.equal(863);
41
+    let database = qm.getDatabase();
42
+    let all_uuids = getUUIDs(database);
43
+    let found_uuids = [];
44
+    all_uuids.forEach(function(q) {
45
+      expect(found_uuids).to.not.contain(q);
46
+      found_uuids.push(q);
47
+    });
48
+  });
49
+
50
+  it("Find question lists", function() {
51
+    let qm = new question_manager.QuestionManager();
52
+    qm.readQuestions("assets/TechnikE.json");
53
+    qm.readQuestions("assets/BetriebstechnikVorschriften.json");
54
+
55
+    expect(qm.getQuestionList("FooBar")).to.equal(null);
56
+    // expect(qm.getQuestionList("a240057a-83a1-5aef-ad10-2ad669385706").length).to.equal(1);
57
+    // expect(qm.getQuestionList("1dc54820-1387-5203-825f-96540614bbb9").length).to.equal(11);
58
+    expect(qm.getQuestionList("").length).to.equal(863);
59
+  });
60
+});

+ 153
- 0
backend/tests/test_rm.js View File

@@ -0,0 +1,153 @@
1
+var chai = require("chai");
2
+var expect = chai.expect;
3
+var room_manager = require("../roomManager");
4
+
5
+describe("RoomManager test", function () {
6
+    it("Empty database", function () {
7
+        let rm = new room_manager.RoomManager(function () {
8
+        });
9
+        expect(rm.getRoomList().length).to.equal(0);
10
+    });
11
+
12
+    it("Simple room", function () {
13
+        let rm = new room_manager.RoomManager(function () {
14
+        });
15
+        let user = {
16
+            foo: "bar",
17
+        };
18
+        let room = rm.addRoom("Room1", user, "");
19
+        expect(room.name).to.equal("Room1");
20
+        expect(room.members[0]).to.equal(user);
21
+        expect(rm.getRoomList().length).to.equal(1);
22
+        expect(rm.getRoomByUser(user)).to.equal(room);
23
+        expect(rm.getRoomByName("Room1")).to.equal(room);
24
+        expect(rm.getRoomByUUID(room.uuid)).to.equal(room);
25
+
26
+        rm.removeUser(user);
27
+        expect(room.name).to.equal("Room1");
28
+        expect(room.members[0]).to.equal(user);
29
+        expect(rm.getRoomList().length).to.equal(0);
30
+        expect(rm.getRoomByUser(user)).to.equal(undefined);
31
+        expect(rm.getRoomByName("Room1")).to.equal(undefined);
32
+        expect(rm.getRoomByUUID(room.uuid)).to.equal(undefined);
33
+    });
34
+
35
+    it("Complex", function () {
36
+        let rm = new room_manager.RoomManager(function () {
37
+        }, function () {
38
+        });
39
+        let user1 = {
40
+            foo: "bar",
41
+        };
42
+        let user2 = {
43
+            blubb: "foo",
44
+        };
45
+
46
+        let room1 = rm.addRoom("Room1", user1, "");
47
+        let room2 = rm.addRoom("Room2", user2, "");
48
+        expect(rm.getRoomList().length).to.equal(2);
49
+
50
+        rm.addUser(room1, user2, "");
51
+        expect(rm.getRoomList().length).to.equal(1);
52
+        expect(rm.getRoomByUser(user1)).to.equal(rm.getRoomByUser(user2));
53
+
54
+        rm.removeUser(user1);
55
+
56
+        expect(rm.getRoomList().length).to.equal(0);
57
+    });
58
+
59
+    it("Callback", function () {
60
+        let callback = 0, removeCallback = 0, roomCallback = 0, lastRoom = null;
61
+        let rm = new room_manager.RoomManager(function () {
62
+            callback++;
63
+        }, function () {
64
+            removeCallback++;
65
+        }, function (room) {
66
+            lastRoom = room;
67
+            roomCallback++;
68
+        });
69
+        expect(callback).to.equal(0);
70
+        expect(removeCallback).to.equal(0);
71
+
72
+        let user1 = {
73
+            foo: "bar",
74
+        };
75
+        let user2 = {
76
+            blubb: "foo",
77
+        };
78
+        let questions = [
79
+            {
80
+                uuid: "uuid1",
81
+                id: "id1",