This is a rewrite of ast_cli_completion_matches using a vector to build
the list.  The original function calls the vector version, NULL
terminates the vector and extracts the elements array.

One change in behavior the results are now sorted and deduplicated. This
will solve bugs where some duplicate checking was done before the list
was sorted.

Change-Id: Iede20c5b4d965fa5ec71fda136ce9425eeb69519

* AST_VECTOR_STEAL_ELEMENTS - steal the array of elements for use
  with non-vector code.
* struct ast_vector_string - a vector of 'char *'.

Change-Id: I104d1b204be03fccf67e02a195596adcb5ab1e42

Change-Id: Ic49d821ef88ada38a31bdd835b9531443c55d793

handle_quit has been disabled since 2003, remove it.

Change-Id: Idc3aaa6c81676160547078f9b71e8aa43de2db18

This ensures that the root Makefile runs only a single target at a time.
SUBMAKE will still honor requested parallelism, so 'make -j8' will build
one directory at a time but allow 8 jobs at once when building a sub
directory.

This will fix some display glitches related to rebuild of XML
documentation.  It will also prevent some edge case errors where
bundled pjproject needs to be rebuild before other parts of Asterisk.

Change-Id: I4f2ec6fbbec1ada0ccb1109a28ea303524239b1e

Change-Id: I3f9dd3c31bd582e54a30381500077de2319d8cc3

This appeared in my audit of ast_stream_topology_set_stream callers
not checking for errors but in this situation the call cannot fail.
Add comment so this can be ignored in the future.

Change-Id: I91d25704859efbe50b8b82cfe1cd3c40ba177c9f

A previous commit made it so when an invite session transitioned into a
disconnected state destruction of the Asterisk pjsip session object was
postponed until either a transport error occurred or the event timer
expired. However, if a call was rejected (for instance a 488) before the
session was fully established the event timer may not have been initiated,
or it was canceled without triggering either of the session finalizing states
mentioned above.

Really the only time destruction of the session should be delayed is when a
BYE is being transacted. This is because it's possible in some cases for the
session to be disconnected, but the BYE is still transacting.

This patch makes it so the session object always gets released (no more
memory leak) when the pjsip session is in a disconnected state. Except when
the method is a BYE. Then it waits until a transport error occurs or an event
timeout.

ASTERISK-27345 #close

Reported by: Corey Farrell

Change-Id: I1e724737b758c20ac76d19d3611e3d2876ae10ed

cdr_object_update_party_b_userfield_cb() could overrun the fixed buffer if
the supplied string is too long.  The long string could be supplied by
external means using the CDR(userfield) function.

This may seem reminiscent to AST-2017-001 (ASTERISK_26897) and it is.  The
earlier patch fixed the buffer overrun for Party A's userfield while this
patch fixes the same thing for Party B's userfield.

ASTERISK-27337

Change-Id: I0fa767f65ecec7e676ca465306ff9e0edbf3b652

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

Change-Id: I68ece0073ea79667ca41eb10405f516f1d30d482

Change-Id: I41e8d5183ace284095cc721f3b1fb32ade3f940f

* Pre-initialize cloned media state vectors to final size to ensure
  vector errors cannot happen later in the clone initialization.
* Release session_media on vector replace failure in
  ast_sip_session_media_state_add.
* Release clone and media_state in ast_sip_session_refresh if we fail to
  append to the stream topology, return an error.

Change-Id: Ib5ffc9b198683fa7e9bf166d74d30c1334c23acb