If a 183 with sdp response is receive without a To tag the sdp is not
negotiated. According to RFC 3261 section 12.1.2 while a To tag is required,
the client needs to still be able to handle the missing tag case for
backwards compatibility.

This patch, accepted by and applied to pjproject, makes it so if an incoming
180/183 with SDP comes in without a To tag it gets appropriately handled.

ASTERISK-27442 #close

Change-Id: Ic9d6b01e05e8f4874eebbd7adfe05d932025d203

ASTERISK-27435

Change-Id: Id318a7ae6d7d69b53f911d30bf3eece64852f15c

OSX does not support 'readlink -f' or 'sed -r'.  Replace readlink with
the GNU make macro 'realpath'.  Replace sed with grep in one place, cut
in the other.

ASTERISK-27332

Change-Id: I5d34ecca905384decb22ead45c913ae5e8aff748

The default return code for pjsip_find_msg was PJ_SUCCESS so if
a Content-Length header wasn't found at all, pjsip_find_msg was
returning PJ_SUCCESS instead of PJSIP_EMISSINGHDR.

Also added the volatile keyword to a few variables that are used
both inside and outside the PJ_TRY/PJ_CATCH block.

Partial fix for ASTERISK_27408

Change-Id: If82ba9de921e3d57df9c68cf96ee45ccc1491f7a

Update from 2.7 to 2.7.1 for bundled pjproject. Changed version
and removed patch files included in the update.

Change-Id: I55cea8e734b318c2df9daf86aa0802c559ec8357

If a transport is created with the same transport type, source
IP address, and source port as one that already exists the old
transport is moved into a linked list called "tp_list".

If this old transport is later shutdown it will not be destroyed
as the process checks whether the transport is valid or not. This
check does not look at the "tp_list" when making the determination
causing the transport to not be destroyed.

This change updates the logic to query not just the main storage
method for transports but also the "tp_list".

Upstream issue https://trac.pjsip.org/repos/ticket/2061

ASTERISK-27411

Change-Id: Ic5c2bb60226df0ef1c8851359ed8d4cd64469429

Parsing the numeric header fields like cseq, ttl, port, etc. all
had the potential to overflow, either causing unintended values to
be captured or, if the values were subsequently converted back to
strings, a buffer overrun.  To address this, new "strto" functions
have been created that do range checking and those functions are
used wherever possible in the parser.

 * Created pjlib/include/limits.h and pjlib/include/compat/limits.h
   to either include the system limits.h or define common numeric
   limits if there is no system limits.h.

 * Created strto*_validate functions in sip_parser that take bounds
   and on failure call the on_str_parse_error function which prints
   an error message and calls PJ_THROW.

 * Updated sip_parser to validate the numeric fields.

 * Fixed an issue in sip_transport that prevented error messages
   from being properly displayed.

 * Added "volatile" to some variables referenced in PJ_CATCH blocks
   as the optimizer was sometimes optimizing them away.

 * Fixed length calculation in sip_transaction/create_tsx_key_2543
   to account for signed ints being 11 characters, not 9.

ASTERISK-27319
Reported by: Youngsung Kim at LINE Corporation

Change-Id: I48de2e4ccf196990906304e8d7061f4ffdd772ff

ASTERISK-27359

Change-Id: Ib01fb6c01f9bb87129374a51cb9318c474147517

Update patches included in bundled PJPROJECT for the new version.

ASTERISK-27355

Change-Id: I9ac5dbbffaadca25ad24fac8b9ab615e5ace6083

Change-Id: I0e453253dff1388b0186b36c754457c1d0d12db6

On a fresh Asterisk source directory, the bundled pjproject tarball is
unconditionally downloaded even if the tarball is already in a specified
cache directory.

* Made check if the pjproject tarball is valid in the cache directory
before downloading the tarball on a fresh source directory.

Change-Id: Ic7ec842d3c97ecd8dafbad6f056b7fdbce41cae5

'--with-pjproject-bundled' is now the default when running
./configure. It can be disabled with '--without-pjproject-bundled'.

To make building without an internet connection easier, a new
./configure option '--with-download-cache' was added that sets
the cache for externals (like pjproject, the codecs and the DPMA),
AND the sounds files.  It can also be specified as an environment
variable named "AST_DOWNLOAD_CACHE".  The existing
'--with-sounds-cache' option / SOUNDS_CACHE_DIR env variable and
'--with-externals-cache' option / EXTERNALS_CACHE_DIR env variable
remain and if specified, will override '--with-downloads-cache'.

ASTERISK-27189

Change-Id: Ifa9783fddf44aafadb060c9feba713dfa81d38ce

OpenSSL has 2 levels or error processing.  It's possible for the
top layer to return SSL_ERROR_SYSCALL but the lower layer return
no error, in which case processing should continue.  Only the top
layer was being examined though so connections were being torn
down when they didn't need to be.  This patch adds the examination
of the lower level codes, and if they return no errors, allows
processing to continue.

ASTERISK-27001
Reported-by: Ian Gilmour
patches:
	pjproject-2.6.patch submitted by Ian Gilmour (license 6889)

Updated-by: George Joseph and Sauw Ming (Teluu)

Merged to upstream pjproject on 7/27/2017 (commit 5631)

Change-Id: I23844ca0c68ef1ee550f14d46f6dae57d33b7bd2

The maximum packet size for PJSIP has been increased to handle the
multiple streams being added for WebRTC.

Change-Id: I9ea1e8d02668c544acadcb1c6200e1cc1bd588b3

There wasn't any good way to pass options like --host or --build
down to the pjproject configure which makes cross-compiling difficult.

* Added a new PJPROJECT_CONFIGURE_OPTS environment variable which
  can be used to pass arbitrary options to pjproject configure.
* Automatically set the pjproject configure --host and --build
  options to match those supplied for the asterisk configure.

ASTERISK-27097 #close
Reported-by: Kinsey Moore

Change-Id: I5fa776e110262851173002a26ffe1172e4c35b2e

When connected_line_method is "invite", we're supposed to determine
if the client can support UPDATE and if it can, send UPDATE instead
of INVITE to avoid the SDP renegotiation.  Not only was pjproject
not setting the PJSIP_INV_SUPPORT_UPDATE flag, we were testing
that invite_tsx wasn't NULL which isn't always the case.

* Updated chan_pjsip/update_connected_line_information to drop the
  requirement that invite_tsx isn't NULL.
* Submitted patch to pjproject sip_inv.c that sets the
  PJSIP_INV_SUPPORT_UPDATE flag correctly.
* Updated pjsip.conf.sample to clarify what happens when "invite"
  is specified.

ASTERISK-27095

Change-Id: Ic2381b3567b8052c616d96fbe79564c530e81560

We now mirror the pjproject tarball and md5 at
https://github.com/asterisk/third-party/tree/master/pjproject

To improve download reliability, we now get the tarball from
our mirror instead of from pjsip.org.

ASTERISK-27052 #close
Reported-by: 'alex'

Change-Id: I60236587a8935bfa71fcc391f4e2ecb31918c08a

ASTERISK-26939 #close

Change-Id: I7ea235ab39833a187db4e078f0788bd0af0a24fd

ASTERISK-26938 #close

Change-Id: I266490792fd8896a23be7cb92f316b7e69356413

Without the disable, pjproject tries to build it's internal
webrtc implementation which requires sse2.  This fails on
platforms without sse2.

ASTERISK-26930 #close
Reported-by: abelbeck

Change-Id: I07231f9160c35cfa42b194d3aad4e7d51fd9a410

When the Asterisk channel driver res_pjsip offers SIP-over-TLS, sometimes, not
reproducible, Asterisk crashed in pj_ssl_sock_get_info() because a NULL pointer
was read. This change avoids this crash.

ASTERISK-26927 #close

Change-Id: I24a6011b44d1426d159742ff4421cf806a52938b

0035-r5572-svn-backport-dialog-transaction-deadlock.patch
0036-r5573-svn-backport-ua-pjsua-transaction-deadlock.patch
0037-r5576-svn-backport-session-timer-crash.patch

Also removed the progress bar from wget download to stdout.

ASTERISK-26905 #close
Reported-by: Ross Beer

Change-Id: I268fb3cf71a3bb24283ff0d24bd8b03239d81256

This has not worked for some time and is no longer actively maintained.

Change-Id: I5110b0db69c152761b58fa025cb0a53b0e544d99

After configuring Asterisk with '--with-pjproject-bundled' the configure/build
process attempts to download pjproject from its download site. Currently, a
timeout of 10 seconds is used that will stop the download process if pjproject
has not been fully downloaded in that time. For some systems this was not enough
time and the process was timing out too early.

This patch raises the download timeout value to '60'. Also, this patch fixes
another bug where the DOWNLOAD_TIMEOUT variable was not being properly exported
due to a naming error. DOWNLOAD_MAX_TIMEOUT is now properly renamed to
DOWNLOAD_TIMEOUT.

ASTERISK-26814 #close

Change-Id: Ia56e4e8a3d39db76bc8a1852b2cf07ec10b39842

ASTERISK-26776 #close

Change-Id: I884b6f4e8233a355d0be687ec78d41bc0e4d3fd2

Bundled pjproject should now only rebuild if one of the menuselect
"Compiler Flags" options changes.

Change-Id: If114a2e16b9e77af371a600d6a5e197bbf28fe43

This change adds a PJSIP patch (which has been contributed upstream)
to allow the registration of IPv6 transport types.

Using this the res_pjsip_transport_websocket module now registers
an IPv6 Websocket transport and uses it for the corresponding
traffic.

ASTERISK-26685

Change-Id: Id1f9126f995b31dc38db8fdb58afd289b4ad1647

 * Removed all 2.5.5 functional patches.
 * Updated usages of pj_release_pool to be "safe".
 * Updated configure options to disable webrtc.
 * Updated config_site.h to disable webrtc in pjmedia.
 * Added Richard Mudgett's recent resolver patches.

Change-Id: Ib400cc4dfca68b3d07ce14d314e829bfddc252c7

* Re #1945 (misc): Don't trigger SRV complete callback when there is a
parse error.

* srv_resolver.c: Don't try to send query if already considered resolved.

** In resolve_hostnames() don't try to resolve a query that is already
considered resolved.

** In resolve_hostnames() fix DNS typo in comments.

** In build_server_entries() move a common expression assigning to cnt
earlier.

* sip_transport.c: Fix tdata object name to actually contain the pointer.

It helps if the logs referencing a tdata object buffer actually have a
name that includes the correct pointer as part of the name.  Also since
the tdata has its own pool it helps if any logs referencing the pool have
the same name as the tdata object.  This change brings tdata logging in
line with how tsx objects are named.

ASTERISK-26669 #close
ASTERISK-26738 #close

Change-Id: I56af2ded25476b3e870ca586ee69ed6954ef75af

ASTERISK-26669
ASTERISK-26738

Change-Id: Ibae6fc8cae69a1f04df0c577c4c11200499d6fe0

This patch fixes 2 original issues and more that those 2 exposed.

* When we send a NOTIFY, and the client either doesn't respond or
  responds with a non OK, pjproject only calls our
  pubsub_on_evsub_state callback, no others.  Since
  pubsub_on_evsub_state (which does the sub_tree cleanup) does not
  expect to be called back without the other callbacks being called
  first, it just returns leaving the sub_tree orphaned.  Now
  pubsub_on_evsub_state checks the event for PJSIP_EVENT_TSX_STATE
  which is what pjproject will set to tell us that it was the
  transaction that timed out or failed and not the subscription
  itself timing our or being terminated by the client. If is
  TSX_STATE, pubsub_on_evsub_state now does the proper cleanup
  regardless of the state of the subscription.

* When a client renews a subscription, we don't update the
  persisted subscription with the new expires timestamp.  This causes
  subscription_persistence_recreate to prune the subscription if/when
  asterisk restarts.  Now, pubsub_on_rx_refresh calls
  subscription_persistence_update to apply the new expires timestamp.
  This exposed other issues however...

* When creating a dialog from rdata (which sub_persistence_recreate
  does from the packet buffer) there must NOT be a tag on the To
  header (which there will be when a client refreshes a
  subscription).  If there is one, pjsip_dlg_create_uas will fail.
  To address this, subscription_persistence_update now accepts a flag
  that indicates that the original packet buffer must not be updated.
  New subscribes don't set the flag and renews do.  This makes sure
  that when the rdata is recreated on asterisk startup, it's done
  from the original subscribe packet which won't have the tag on To.

* When creating a dialog from rdata, we were setting the dialog's
  remote (SUBSCRIBE) cseq to be the same as the local (NOTIFY) cseq.
  When the client tried to resubscribe after a restart with the
  correct cseq, we'd reject the request with an Invalid CSeq error.

* The acts of creating a dialog and evsub by themselves when
  recreating a subscription does NOT restart pjproject's subscription
  timer.  The result was that even if we did correctly recreate the
  subscription, we never removed it if the client happened to go away
  or send a non-OK response to a NOTIFY.  However, there is no
  pjproject function exposed to just set the timer on an evsub that
  wasn't created by an incoming subscribe request.  To address this,
  we create our own timer using ast_sip_schedule_task.  This timer is
  used only for re-establishing subscriptions after a restart.

  An earlier approach was to add support for setting pjproject's
  timer (via a pjproject patch) and while that patch is still included
  here, we don't use that call at the moment.

While addressing these issues, additional debugging was added and
some existing messages made more useful.  A few formatting changes
were also made to 'pjsip show scheduled tasks' to make displaying
the subscription timers a little more friendly.

ASTERISK-26696
ASTERISK-26756

Change-Id: I8c605fc1e3923f466a74db087d5ab6f90abce68e

An earlier attempt to prevent pjsua from spitting out an extra 6795
lines of debug output every time the testsuite called it was also
turning off the ability for asterisk to output debug info when it
needed to.  This patch reverts the earlier fix and instead adds
a pjproject patch that sets the startup log level to 1 for pjsua
pjsystest and the pjsua python binding.  This is an asterisk-only
patch that does not affect pjproject functionality and will not be
submitted upstream.

Change-Id: I347a8b58b2626f2906ccfc1d339e907627a0c9e8

When MALLOC_DEBUG was specified, make was failing.  Immediately
remaking would work.  The issues was in the ordering of the make
dependencies.

Change-Id: If6030b54fc693f3179f32bfd20c6b5d5f1b3f7cd

A while back, we changed config_site.h to set PJ_LOG_MAX_LEVEL = 6.
This allowed us to control the log level better from inside Asterisk.
An unfortunate side effect of this was that the pjsua binary and
python bindings were also compiled with log level set to 6 so whenever
a testsuite test that uses pjsua runs, it spits out 6795 lines of
debug in an instant even before the test starts.  I believe this
overruns the Jenkins capture buffer and prevents the test from
properly terminating.  In turn, this results in the testsuite just
hanging until the job is killed.  It's more frequent on the higher
end agents because they can spit out the messages faster.

Unfortunately, the messages are all spit out before we have control
of the python pj.Lib instance where we can set logging levels so the
only alternative was to actually compile pjsua and _pjsua.so with an
overridden PJ_LOG_MAX_LEVEL.  Although defining a lower max level was
done in the Makefile, the define in config_site.h had to be wrapped
with "#ifndef" so the change would take effect.

Change-Id: I2af9e7d48dde1927279c586c9c725d868fe6f3ff

There were just too many issues in various environments with
multi threaded building of pjproject.  It doesn't really speed
things up anyway since asterisk is already being compiled in
parallel.

Change-Id: Ie5648fb91bb89b4224b6bf43a0daa1af793c4ce1

If a tarball is corrupted during download, the makefile will attempt to
download it again. If the tarball somehow gets corrupted after it's
downloaded however, the makefile was just failing.  We now
retry the download.

ASTERISK-26653 #close

Change-Id: I1b24d454852d80186f60c5a65dc4624ea8a1c359

Occasionally SIP message transactions are not found when they should be.
In the particular case an incoming INVITE transaction is CANCELed but the
INVITE transaction cannot be found so a 481 response is returned for the
CANCEL.  The problematic calls have a '_' character in the Via branch
parameter.

The problem is in the pjproject PJ_HASH_USE_OWN_TOLOWER feature's code.
The problem with the "own tolower" code is that it does not calculate the
same hash value as when the pj_tolower() function is used.  The "own
tolower" code will erroneously modify the ASCII characters '@', '[', '\\',
']', '^', and '_'.  Calls to pj_hash_calc_tolower() can use the
PJ_HASH_USE_OWN_TOLOWER substitute algorithm when enabled.  Calls to
pj_hash_get_lower(), pj_hash_set_lower(), and pj_hash_set_np_lower() call
find_entry() which never uses the PJ_HASH_USE_OWN_TOLOWER algorithm.  As a
result you may not be able to find a hash tabled entry because the
calculated hash values would differ.

* Simply disable PJ_HASH_USE_OWN_TOLOWER.

ASTERISK-26490 #close

Change-Id: If89bfdb5f301b8b685881a9a2a6e0c3c5af32253

Added back in a -g3, and an -O3 when DONT_OPTIMIZE is not set, to
the CFLAGS.  Not sure how they went missing.

Also fixed an uninstall problem where we weren't removing the
symlink from libasteriskpj.so.2 to libasteriskpj.so.  While I was
there, I fixed it for libasteriskssl as well.

Change-Id: I9e00873b1e9082d05b5549d974534b48a2142556

Use of the new logging is as simple as issuing the new CLI command or
setting the new pjproject.conf option.

Other options that can affect the logging are how you have the pjproject
log levels mapped to Asterisk log types in pjproject.conf and if you have
configured Asterisk to log the DEBUG type messages.  Altering the
pjproject.conf level mapping shouldn't be necessary for most installations
as the default mapping is sensible.  Configuring Asterisk to log the DEBUG
message type is standard practice for collecting debug information.

* Added CLI "pjproject set log level" command to dynamically adjust the
maximum pjproject log message level.

* Added CLI "pjproject show log level" command to see the currently set
maximum pjproject log message level.

* Added pjproject.conf startup section "log_level" option to set the
initial maximum pjproject log message level so all messages could be
captured from initialization.

* Set PJ_LOG_MAX_LEVEL to 6 to compile in all defined logging levels into
bundled pjproject.  Pjproject will use the currently set run time log
level to determine if a log message is generated just like Asterisk
verbose and debug logging levels.

* In log_forwarder(), made always log enabled and mapped pjproject log
messages.  DEBUG mapped log messages are no longer gated by the current
Asterisk debug logging level.

* Removed RAII_VAR() from res_pjproject.c:get_log_level().

ASTERISK-26630 #close

Change-Id: I6dca12979f482ffb0450aaf58db0fe0f6d2e5389

The download process now has a timeout which will cause wget to retry
if it stops retrieving data for 5 seconds and fetch and curl to timeout
if the whole retrieval take smore than 30 seconds.

If the tarball retrieval works, the MD5SUM file is retrieved from
the downloads site and the md5 checksum is verified.

If either the tarball retrieval or MD5SUM retrieval fails, or the
checksums don't match, the entire process is retried once.  If it
fails again, any incomplete tarball is deleted.

.DELETE_ON_ERROR: was also added to the Makefile.  Not only does
this delete the tarball on failure, it till also delete corrupted
library files from the pjproject source directory should they
fail to build correctly.

Tested all the way back to FreeBSD 9, CentOS 6, Debian 6 and
Ubuntu 14.

Change-Id: Iea7d33b96a31622ab1b6e54baebaf271959514e1