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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 An admittedly out-of-date overview of the architecture can be found in the file doc/CCSS_architecture.pdf in the CCSS branch.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		15 years ago
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db1-ast	Merged revisions 209879 via svnmerge from	16 years ago
editline	One more fix to editline	16 years ago
stdtime	Resolve more compiler warnings on FreeBSD.	15 years ago
Makefile	Allow symbol export filtering to work properly on platforms that have symbol prefixes.	15 years ago
abstract_jb.c	Fix jitterbuffer logging not creating logfiles.	15 years ago
acl.c	Fix incorrect ACL behavior when CIDR notation of "/0" is used.	16 years ago
adsistub.c	remove a bunch of useless #include "options.h"	18 years ago
aescrypt.c	Spacing changes only	17 years ago
aeskey.c	use the OpenSSL AES implementation if it's available (unless configured not to)	18 years ago
aesopt.h	…
aestab.c	use the OpenSSL AES implementation if it's available (unless configured not to)	18 years ago
alaw.c	Fix compile when certain G711 menuselect options are enabled.	16 years ago
app.c	Resolve unit test failure that occurred on Mac OSX.	15 years ago
ast_expr2.c	Allow "REMAINDER" to function properly in expressions.	16 years ago
ast_expr2.fl	Merged revisions 245496 via svnmerge from	16 years ago
ast_expr2.h	Merged revisions 179807 via svnmerge from	17 years ago
ast_expr2.y	Allow "REMAINDER" to function properly in expressions.	16 years ago
ast_expr2f.c	Merged revisions 245496 via svnmerge from	16 years ago
asterisk.c	Merge Call completion support into trunk.	15 years ago
asterisk.dynamics	Export dynamic (weak-linked) symbols correctly.	16 years ago
asterisk.exports.in	Allow symbol export filtering to work properly on platforms that have symbol prefixes.	15 years ago
astfd.c	Merged revisions 228338 via svnmerge from	16 years ago
astmm.c	Two more minor fixes due to constification	16 years ago
astobj2.c	prevent segfault if bad magic number is encountered.	15 years ago
audiohook.c	fixes AUDIOHOOK_INHERIT regression	16 years ago
autochan.c	Convert the ast_channel data structure over to the astobj2 framework.	16 years ago
autoservice.c	Expand codec bitfield from 32 bits to 64 bits.	16 years ago
bridging.c	Expand codec bitfield from 32 bits to 64 bits.	16 years ago
buildinfo.c	fix a few small things found by using sparse	17 years ago
callerid.c	More 32->64 bit codec conversions.	16 years ago
ccss.c	Merge Call completion support into trunk.	15 years ago
cdr.c	Trim trailing whitespace (to help reduce diff against cdr-q branch)	16 years ago
cel.c	Consolidate ast_channel.cid.cid_rdnis into ast_channel.redirecting.from.number.	15 years ago
channel.c	Merge Call completion support into trunk.	15 years ago
chanvars.c	Add additional memory debugging to several core APIs, and fix several memory	17 years ago
cli.c	Change per-file debug and verbose levels to be per-module, the way	15 years ago
config.c	Merged revisions 241015 via svnmerge from	16 years ago
cryptostub.c	Don't include logger.h in asterisk.h by default as it is causing problems building	17 years ago
cygload.c	Doxygen updates, formatting.	18 years ago
datastore.c	Properly account for memory allocated for channels and datastores	16 years ago
db.c	More 'static' qualifiers on module global variables.	16 years ago
devicestate.c	Merged revisions 205409 via svnmerge from	16 years ago
dial.c	Consolidate ast_channel.cid.cid_rdnis into ast_channel.redirecting.from.number.	15 years ago
dns.c	Fix a few compilation problems found when building Asterisk against uClibc.	16 years ago
dnsmgr.c	AST-2009-005	16 years ago
dsp.c	restarts busydetector (if enabled) when DTMF is received after call is bridged.	16 years ago
ecdisa.h	…
enum.c	Extend max call limit duration from 24.8 days to 292+ million years.	16 years ago
event.c	Remove a debugging log entry.	15 years ago
features.c	Merged revisions 253799 via svnmerge from	15 years ago
file.c	Merged revisions 254451 via svnmerge from	15 years ago
fixedjitterbuf.c	Start untangling header inclusion in a way that does not affect	18 years ago
fixedjitterbuf.h	Merged revisions 135841,135847,135850 via svnmerge from	17 years ago
frame.c	Fix crash resulting from frames with invalid data pointers.	16 years ago
fskmodem.c	(Step 2 of 2)	17 years ago
fskmodem_float.c	Optionally build integer-based routines for FSK tone decoding (but default	17 years ago
fskmodem_int.c	Optionally build integer-based routines for FSK tone decoding (but default	17 years ago
global_datastores.c	Merged revisions 172517 via svnmerge from	17 years ago
hashtab.c	Add MALLOC_DEBUG to various utility APIs, so that memory leaks can be tracked back to their source.	16 years ago
heap.c	Pass more useful information through to lock tracking when DEBUG_THREADS is on.	16 years ago
http.c	Don't act like an http write failed when it didn't	15 years ago
image.c	More 'static' qualifiers on module global variables.	16 years ago
indications.c	Expand codec bitfield from 32 bits to 64 bits.	16 years ago
io.c	Merged revisions 182810 via svnmerge from	16 years ago
jitterbuf.c	Merged revisions 174583 via svnmerge from	17 years ago
loader.c	RTP documentation states that you can pass NULL as the module, so make sure that's really the case.	16 years ago
logger.c	Merged revisions 248582 via svnmerge from	16 years ago
manager.c	Merge Call completion support into trunk.	15 years ago
md5.c	Start untangling header inclusion in a way that does not affect	18 years ago
netsock.c	fixes an ast_netsock_list memory leak.	16 years ago
pbx.c	Fix potential invalid reads that could occur in pbx.c	15 years ago
plc.c	Start untangling header inclusion in a way that does not affect	18 years ago
poll.c	MAX() moved to utils.h	16 years ago
privacy.c	remove a bunch of useless #include "options.h"	18 years ago
rtp_engine.c	Only change the RTP ssrc when we see that it has changed	15 years ago
say.c	Merged revisions 237573 via svnmerge from	16 years ago
sched.c	Initialize counters in ast_sched_report so that resulting data is not bogus.	16 years ago
security_events.c	Add an API for reporting security events, and a security event logging module.	16 years ago
sha1.c	more header removal/normalization	18 years ago
slinfactory.c	Expand codec bitfield from 32 bits to 64 bits.	16 years ago
srv.c	func_srv and explicit specification of a remote IP for SIP.	15 years ago
ssl.c	pthread_self returns a pthread_t which is not an unsigned int on all	16 years ago
strcompat.c	Move implementation of closefrom(3) from app.c to strcompat.c	16 years ago
strings.c	Fix two problems in ast_str functions found while writing a unit test.	16 years ago
stun.c	This commit introduces COLP/CONP and Redirecting party information into Asterisk.	16 years ago
syslog.c	Add functions to map syslog facilities and priorities constants to strings.	16 years ago
taskprocessor.c	Minor tweaks to comment blocks and includes.	16 years ago
tcptls.c	Resolve more compiler warnings on FreeBSD.	15 years ago
tdd.c	Merge changes from str_substitution that are unrelated to that branch.	16 years ago
term.c	Merged revisions 248582 via svnmerge from	16 years ago
test.c	Put test output for a failure in a CDATA section in the XML results.	15 years ago
threadstorage.c	Fixed an issue in the threadstorage cli functions resulting from the constification of struct ast_cli_args in r196072.	16 years ago
timing.c	Extend max call limit duration from 24.8 days to 292+ million years.	16 years ago
translate.c	Using the builtin function breaks OpenBSD 4.2	16 years ago
udptl.c	fixes crash during T.38 negotiation caused by invalid or missing FaxMaxDatagram field	16 years ago
ulaw.c	Fix compile when certain G711 menuselect options are enabled.	16 years ago
utils.c	Add new unit test for stringfields.	15 years ago
xml.c	Merge Call completion support into trunk.	15 years ago
xmldoc.c	Fix a typo.	15 years ago