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Mark Michelson e24661fd18 Merge Call completion support into trunk. ... From Reviewboard: CCSS stands for Call Completion Supplementary Services. An admittedly out-of-date overview of the architecture can be found in the file doc/CCSS_architecture.pdf in the CCSS branch. Off the top of my head, the big differences between what is implemented and what is in the document are as follows: 1. We did not end up modifying the Hangup application at all. 2. The document states that a single call completion monitor may be used across multiple calls to the same device. This proved to not be such a good idea when implementing protocol-specific monitors, and so we ended up using one monitor per-device per-call. 3. There are some configuration options which were conceived after the document was written. These are documented in the ccss.conf.sample that is on this review request. For some basic understanding of terminology used throughout this code, see the ccss.tex document that is on this review. This implements CCBS and CCNR in several flavors. First up is a "generic" implementation, which can work over any channel technology provided that the channel technology can accurately report device state. Call completion is requested using the dialplan application CallCompletionRequest and can be canceled using CallCompletionCancel. Device state subscriptions are used in order to monitor the state of called parties. Next, there is a SIP-specific implementation of call completion. This method uses the methods outlined in draft-ietf-bliss-call-completion-06 to implement call completion using SIP signaling. There are a few things to note here: * The agent/monitor terminology used throughout Asterisk sometimes is the reverse of what is defined in the referenced draft. * Implementation of the draft required support for SIP PUBLISH. I attempted to write this in a generic-enough fashion such that if someone were to want to write PUBLISH support for other event packages, such as dialog-state or presence, most of the effort would be in writing callbacks specific to the event package. * A subportion of supporting PUBLISH reception was that we had to implement a PIDF parser. The PIDF support added is a bit minimal. I first wrote a validation routine to ensure that the PIDF document is formatted properly. The rest of the PIDF reading is done in-line in the call-completion-specific PUBLISH-handling code. In other words, while there is PIDF support here, it is not in any state where it could easily be applied to other event packages as is. Finally, there are a variety of ISDN-related call completion protocols supported. These were written by Richard Mudgett, and as such I can't really say much about their implementation. There are notes in the CHANGES file that indicate the ISDN protocols over which call completion is supported. Review: https://reviewboard.asterisk.org/r/523 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@256528 65c4cc65-6c06-0410-ace0-fbb531ad65f3		17 years ago
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Makefile	Merged revisions 207647 via svnmerge from	17 years ago
func_aes.c	Update func_aes to its pre-ast_str_substitution state.	17 years ago
func_audiohookinherit.c	Merged revisions 229669 via svnmerge from	17 years ago
func_base64.c	Merged revisions 228378 via svnmerge from	17 years ago
func_blacklist.c	Merge str_substitution branch.	18 years ago
func_callcompletion.c	Merge Call completion support into trunk.	17 years ago
func_callerid.c	Consolidate ast_channel.cid.cid_rdnis into ast_channel.redirecting.from.number.	17 years ago
func_cdr.c	Merged revisions 238230 via svnmerge from	17 years ago
func_channel.c	Adjust XML for func_channel to indicate that rtpdest can take a "text" argument.	17 years ago
func_config.c	Merge changes from team/group/appdocsxml	18 years ago
func_connectedline.c	Add support for calling and called subaddress. Partial support for COLP subaddress.	17 years ago
func_curl.c	Add SSL_VERIFYPEER, as requested on the -users list	17 years ago
func_cut.c	AST-2009-005	17 years ago
func_db.c	Merge str_substitution branch.	18 years ago
func_devstate.c	Const-ify the world (or at least a good part of it)	18 years ago
func_dialgroup.c	Recorded merge of revisions 222152 via svnmerge from	17 years ago
func_dialplan.c	AST-2009-005	17 years ago
func_enum.c	AST-2009-005	17 years ago
func_env.c	Merge str_substitution branch.	18 years ago
func_extstate.c	Merge str_substitution branch.	18 years ago
func_global.c	Convert the ast_channel data structure over to the astobj2 framework.	18 years ago
func_groupcount.c	Add support for GROUP_MATCH_COUNT regex matching on category	17 years ago
func_iconv.c	Merge changes from team/group/appdocsxml	18 years ago
func_lock.c	Fix a build error on FreeBSD.	17 years ago
func_logic.c	Merge str_substitution branch.	18 years ago
func_math.c	Various updates to the unit test API.	17 years ago
func_md5.c	Merge str_substitution branch.	18 years ago
func_module.c	Merge str_substitution branch.	18 years ago
func_odbc.c	Allow multiple rows to be fetched within the normal mode of operation.	17 years ago
func_pitchshift.c	Change needed to make Mac OS X 10.6 happy	17 years ago
func_rand.c	AST-2009-005	17 years ago
func_realtime.c	Merged revisions 206807 via svnmerge from	17 years ago
func_redirecting.c	Consolidate ast_channel.cid.cid_rdnis into ast_channel.redirecting.from.number.	17 years ago
func_sha1.c	Merge str_substitution branch.	18 years ago
func_shell.c	Merge changes from team/group/appdocsxml	18 years ago
func_speex.c	Adding some clarifications to func_speex doxygen docs.	17 years ago
func_sprintf.c	AST-2009-005	17 years ago
func_srv.c	func_srv and explicit specification of a remote IP for SIP.	17 years ago
func_strings.c	Fix memory corruption found by unit tests.	17 years ago
func_sysinfo.c	Move function SYSINFO documentation to XML.	18 years ago
func_timeout.c	AST-2009-005	17 years ago
func_uri.c	Merge changes from team/group/appdocsxml	18 years ago
func_version.c	Merge changes from team/group/appdocsxml	18 years ago
func_vmcount.c	More 'static' qualifiers on module global variables.	17 years ago
func_volume.c	Expand codec bitfield from 32 bits to 64 bits.	17 years ago