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Matthew Jordan 8fb5bdce9a Prevent exhaustion of system resources through exploitation of event cache ... Asterisk maintains an internal cache for devices in the event subsystem. The device state cache holds the state of each device known to Asterisk, such that consumers of device state information can query for the last known state for a particular device, even if it is not part of an active call. The concept of a device in Asterisk can include entities that do not have a physical representation. One way that this occurred was when anonymous calls are allowed in Asterisk. A device was automatically created and stored in the cache for each anonymous call that occurred; this was possible in the SIP and IAX2 channel drivers and through channel drivers that utilized the res_jabber/res_xmpp resource modules (Gtalk, Jingle, and Motif). These devices are never removed from the system, allowing anonymous calls to potentially exhaust a system's resources. This patch changes the event cache subsystem and device state management to no longer cache devices that are not associated with a physical entity. (issue ASTERISK-20175) Reported by: Russell Bryant, Leif Madsen, Joshua Colp Tested by: kmoore patches: event-cachability-3.diff uploaded by jcolp (license 5000) ........ Merged revisions 378303 from http://svn.asterisk.org/svn/asterisk/branches/1.8 ........ Merged revisions 378320 from http://svn.asterisk.org/svn/asterisk/branches/10 ........ Merged revisions 378321 from http://svn.asterisk.org/svn/asterisk/branches/11 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@378322 65c4cc65-6c06-0410-ace0-fbb531ad65f3		13 years ago
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include	confbridge: Fix MOH on simultaneous user entry to a new conference.	13 years ago
conf_config_parser.c	confbridge: Fix some resource leaks on conference teardown.	13 years ago
conf_state.c	confbridge: Fix MOH on simultaneous user entry to a new conference.	13 years ago
conf_state_empty.c	Prevent exhaustion of system resources through exploitation of event cache	13 years ago
conf_state_inactive.c	Resolve issues in ConfBridge regarding marked, waitmarked, and unmarked users	13 years ago
conf_state_multi.c	Resolve issues in ConfBridge regarding marked, waitmarked, and unmarked users	13 years ago
conf_state_multi_marked.c	confbridge: Fix MOH on simultaneous user entry to a new conference.	13 years ago
conf_state_single.c	Resolve issues in ConfBridge regarding marked, waitmarked, and unmarked users	13 years ago
conf_state_single_marked.c	Resolve issues in ConfBridge regarding marked, waitmarked, and unmarked users	13 years ago