When a conference contained a mixture of audio/video and audio-only
users, a NOTICE message would pop up stating there are no joint
capabilities between streams. This happens because streams can never be
removed, but they can be in a REMOVED state. If we have the scenario
where user A joins with audio/video, user B joins with audio-only, and
user C joins with audio/video, then user A leaves, the message would
be triggered. That removed stream is still in the SDP, but Asterisk
would pass it through, causing it to be seen as a ulaw stream. A check
has been added for removed streams, setting their status to REMOVED when
handling negotiated SDPs.

Also addressed an issue where user A joins, then user B joins but does
not receive video until much later. Full frames were not being sent,
causing some PLI from the browser. Because the video was flowing in one
direction, the browser sets the SSRC to 1, but Asterisk was dropping the
PLI because of that. Added a check to see if the SSRC is 1 or not, which
sends full frames and allows video to flow between user A and user B.
This should only happen when dealing with PSFB or FUR, and in the case
of PSFB, only for PLI.

ASTERISK-27398

Change-Id: I26e7c6f101bc119549eeca406b5bcd25ad8ebc5e

It is valid for a config file to be empty or contain only comments, but
not valid for a config value to be set when no uncommented context
exists.  This caused an error to be loged numerous times during start
when loading the default pjsip.conf.

Change-Id: Icf3b0d69b4ecb6e935eecd43c99ed8b32a5a1cf6

Change-Id: I9cf97bdc756012d1f552ab007f4aa85e0ddb4e62

When the stasis cache is used a hash is calculated for
retrieving or inserting messages. This change calculates
a hash when the message type is initialized that is then
used each time needed. This ensures that the hash is
calculated only once for the message type.

Change-Id: I4fe6bfdafb55bf5c322dd313fbd8c32cce73ef37

The authors of PJProject undef s_addr because of some issue in Microsoft
Windows. However in Oracle Solaris, s_addr is not a structure member, but
defined to map to the real structure member.

Updates the patch from ASTERISK_20366

ASTERISK-27997

Change-Id: I8223026d4d54e2a46521085fcc94bfa6ebe35b11

* Don't include pjlib.h twice in res_pjsip.h
* Consistently use #include <> form for pjproject includes.
(pjsip.h and pjlib.h)

Change-Id: I3f7b42044840de64edf7e9d7695cb60c45990dc7

If asterisk offer an endpoint with SRTP and that endpoint respond
with non srtp, in that case channel(rtp,secure,audio) reply wrong
status.

Why delete flag AST_SRTP_CRYPTO_OFFER_OK while check identical remote_key:
Currently this flag has being set redundantly. In either case identical
or different remote_key this flag has being set. So if we
don't set it while we receive identical remote_key or non SRTP SDP
response then we can take decision of srtp use by using that flag.

ASTERISK-27999

Change-Id: I29dc2843cf4e5ae2604301cb4ff258f1822dc2d7

The script configure from Teluu expects shared libraries (.so) in a subfolder
called 'lib', when --with-xyz=PATH is specified. However for OpenSSL, the
default location is the root of the source folder = PATH. Furthermore, Asterisk
supports both, 'lib' and root. For consistency and because Asterisk is using
(only) OpenSSL in PJProject, it is enhanced to support both locations, just
like Asterisk.

ASTERISK-27995

Change-Id: I8eb916a88b6b8c22e29bb40bee8faaca6c73406f

This change removes a sorcery lookup for retrieving all
contacts at the end of the registration process by keeping
track of the contacts that are added/updated/deleted.

This ensures at the end of the process the container of
contacts we have is the current state.

Pool usage has also been reduced by allocating one for
usage throughout the handling of a REGISTER and resetting
it to a clean state. This ensures that in most cases
we allocate once and just reuse it.

ASTERISK-28001

Change-Id: I1a78b2d46f9a2045dbbff1a3fd6dba84b612b3cb

The tdata containing the response can be shared by both the dialog
object and the tsx object.  In order to prevent the race condition
between the tsx retransmission and the dialog sending a response,
clone the tdata before modifying it for the dialog send response.

ASTERISK-27966 #close

Change-Id: Ic381004a3a212fe1d8eca0e707fe09dba4a6ab4e

Remove the note that SRV records are not supported as that is no longer
true.

ASTERISK-27993

Change-Id: Id0dd6ef40e52702be9727a2b6122216cb00bb4ca

Change-Id: I7dedf1e925eafc3a0adf01dd9dfbe44eb642aab7

The check for the library ncurses should use not use the header <curses.h> but
<ncurses.h>, because on some platforms <curses.h> is not a drop-in replacement
for <ncurses.h>: For example in Solaris, the symbol initscr is a typedef in
<curses.h> to a symbol which does not exist in the library ncurses (initscr32).
Simply use <ncurses.h> when you link to ncurses.

Furthermore in Solaris, the header <ncurses.h> is in a subdirectory
/usr/include/ncurses and not available via pkg-config.

ASTERISK-15331
ASTERISK-14935
ASTERISK-12382
ASTERISK-9107

Change-Id: Ife367776b0ccf17d3fefed868245376bfb93745d

Change-Id: Iedec4e7390b3e821987681da24d0298632b9873d

In Solaris, the header <jansson.h> is in /usr/include/jansson. To find
Jansson even in such a subdirectory, the tool pkg-config is queried via
AST_PKG_CONFIG_CHECK. For those platforms, which do not list Jansson via
pkg-config, the previous check remains and is executed thereafter.

Because the check for the NetBSD Editline library uses the tool pkg-config
the code of PKG_PROG_PKG_CONFIG must be used. Because that check happens
earlier than Jansson, it must be placed in front of that.

ASTERISK-27991

Change-Id: I69ea0f379f87a50049654b2487c76ee1c04fa53a

This patch adds regular expression support to make the identify section's
match_header option more useful when attempting to match complex headers
like the 'To' or 'From' headers.  The 'From' header has variable
components such as the tag parameter that you cannot predict.  To specify
a regular expression put slashes around the regular expression in place of
the header value.

[identify-alice]
type=identify
endpoint=alice
match_header=From: /<sip:alice@127\\.0\\.0\\.1>/

* Added regex support to match_header so you could match a 'To' header
among other complex headers.

Fixed reported crashes when trying to match special headers like 'Contact'.
The identify section's match_header method used code that assumed you were
matching a generic header.  Any other type of header could cause a crash
if the header structure variant did not match the generic header enough.

* Made use code that will work for any header type instead of code
specific to generic headers.

Other fixes while in the area:

* Made check all headers of the requested name.
* Added some more sanity checks to the configured identify matching
options when applying the configuration.

ASTERISK-27548

Change-Id: I27dfd4ff5e2259b906640e3c330681b76b4ed1f1

The alembic for the PJSIP subscription persistence table has the
"prune_on_boot" field as a boolean. While in Asterisk we are
tolerant of many different definitions of true and false in the
database we only accept "yes" and "no". This change makes the
field treated as a yes/no instead of an integer, thus storing
"yes" and "no" instead of "1" and "0".

Change-Id: Ic8b9211b36babefe78f70def6828a135a6ae7ab6

OpenSSL is an optional external library and should stay optional even when
Developer Mode is configured.

ASTERISK-27990

Change-Id: Ia68a4cd5474b26d45e0f43b04032ad598022853b

Change-Id: Iace19e718f4e8fb48eb7dc9f98af53b115cc45f3

With the new module loader it was missed that built-in modules never
parsed dependencies from mod->info into vectors of mod.  This caused
manager to be initialized before acl (named_acl).  If manager.conf
used any named ACL's they would not be found and result in no ACL being
applied to the AMI user.

In addition to the manager ACL fix this adds "extconfig" to all builtin
modules which support realtime configuration.  This only matters if one
of the builtin modules is configured with 'preload', depending on
"extconfig" will cause config.c to automatically be initialize during
the preload stage.

Change-Id: I482ed6bca6c1064b05bb538d7861cd7a4f02d9fc

When realtime text packets are to be sent, the text is accumulated in a
buffer and sent regularly by a timer.  It can happen that commands such as
a backspace, CR, or LF get merged with regular text.  This breaks some
UAs.

The proposed change:
* We test if the current packet contains a command.  If so we send the
buffer immediately.
* We test if the buffer contained a command.  If so we send the buffer
immediately.
* We accumulate the text (or the command) in the buffer.

ASTERISK-27970

Change-Id: Ifbe993311410fa855cb8aa4a12084db75f413462