sample source code of ccns 夢之大地BBS ( telnet://ccns.cc ) for reference
current code and important documents is here:
https://github.com/ccns/dreamlandbbs
Phoenix Bulletin Board System Version: 3.00-4.0
Copyright (C) 1993, 1994 Ming-Feng Chen,Ji-Tzay Yang,Tsun-Yi Wen
秘密情人資訊站 Version: 3.1-4.0
Copyright (C) 1994 簡顯鑑, 劉佳峰
MapleBridge Bulletin Board System Version: 2.36
Copyright (C) 1994-1995 Jeng-Hermes Lin,Hung-Pin Chen,SoC,Xshadow
SunOfBeach Bulletin Board System Version: 2.36
Copyright (C) 1996 Kaede, woju
Wind's Top Bulletin Board System Version: 2.3 Rev. 981101
Copyright (C) 1998 Yu-Chung Tsao, virtu
Wind's Top Bulletin Board System Version: 3.02 Rev. 20040424
Copyright (C) 2000-2004 visor, statue, Jerics, yab, verit
Wind's Top Bulletin Board System Version: 3.10 Rev. 20081002
Copyright (C) 2004-2008 Hung-Yi Chen (gaod)
DreamLand Bulletin Board System Version: 3.10 Rev. Beta 3
Copyright (C) 2010 Pang-Wei Tsai (cache)
Sample BBS structure not exists in this repo, you have to build it on your own. :p
Download link of Sample BBS structure (for reference) : http://ftp.isu.edu.tw/pub/Unix/BBS/WindTop/