https://my.oschina.net/u/199525/blog/313788

http://blog.csdn.net/joinandjoin/article/details/9052785

https://haoluobo.com/2011/09/gliffy-confluence-creak/

http://ju.outofmemory.cn/entry/32260

https://tommy.net.cn/2015/03/05/study-of-atlassian-license/

JIRA licence crack and etc