Commit Graph

6858 Commits

Author SHA1 Message Date
Naveen Albert
3bb34477d4 general: Fix broken links.
This fixes a number of broken links throughout the
tree, mostly caused by wiki.asterisk.org being replaced
with docs.asterisk.org, which should eliminate the
need for sporadic fixes as in f28047db36.

Resolves: #430
2023-12-08 13:11:51 +00:00
Sean Bright
1d05e34d98 logger.c: Move LOG_GROUP documentation to dedicated XML file.
The `get_documentation` awk script will only extract the first
DOCUMENTATION block that it finds in a given file. This is by design
(9bc2127) to prevent AMI event documentation from being pulled in to
the core.xml documentation file.

Because of this, the `LOG_GROUP` documentation added in 89709e2 was
not being properly extracted and was missing fom the resulting XML
documentation file. This commit moves the `LOG_GROUP` documentation to
a separate `logger.xml` file.
2023-12-06 21:23:50 +00:00
Sean Bright
b437cc3267 config.c: Log #exec include failures.
If the script referenced by `#exec` does not exist, writes anything to
stderr, or exits abnormally or with a non-zero exit status, we log
that to Asterisk's error logging channel.

Additionally, write out a warning if the script produces no output.

Fixes #259
2023-12-06 14:48:20 +00:00
Sean Bright
33213c1979 app.c: Allow ampersands in playback lists to be escaped.
Any function or application that accepts a `&`-separated list of
filenames can now include a literal `&` in a filename by wrapping the
entire filename in single quotes, e.g.:

```
exten = _X.,n,Playback('https://example.com/sound.cgi?a=b&c=d'&hello-world)
```

Fixes #172

UpgradeNote: Ampersands in URLs passed to the `Playback()`,
`Background()`, `SpeechBackground()`, `Read()`, `Authenticate()`, or
`Queue()` applications as filename arguments can now be escaped by
single quoting the filename. Additionally, this is also possible when
using the `CONFBRIDGE` dialplan function, or configuring various
features in `confbridge.conf` and `queues.conf`.
2023-11-28 19:52:00 +00:00
Sean Bright
e2e18b366c uri.c: Simplify ast_uri_make_host_with_port() 2023-11-14 20:51:37 +00:00
Sean Bright
40a9f5a88c res_http_websocket.c: Set hostname on client for certificate validation.
Additionally add a `assert()` to in the TLS client setup code to
ensure that hostname is set when it is supposed to be.

Fixes #433
2023-11-14 17:56:21 +00:00
Matthew Fredrickson
b5c31b55c9 app_followme.c: Grab reference on nativeformats before using it
Fixes a crash due to a lack of proper reference on the nativeformats
object before passing it into ast_request().  Also found potentially
similar use case bugs in app_chanisavail.c, bridge.c, and bridge_basic.c

Fixes: #388
2023-11-09 18:24:28 +00:00
Naveen Albert
a6439d3723 logger: Add channel-based filtering.
This adds the ability to filter console
logging by channel or groups of channels.
This can be useful on busy systems where
an administrator would like to analyze certain
calls in detail. A dialplan function is also
included for the purpose of assigning a channel
to a group (e.g. by tenant, or some other metric).

ASTERISK-30483 #close

Resolves: #242

UserNote: The console log can now be filtered by
channels or groups of channels, using the
logger filter CLI commands.
2023-11-09 12:35:21 +00:00
George Joseph
af7e89ebf8 chan_pjsip: Add PJSIPHangup dialplan app and manager action
See UserNote below.

Exposed the existing Hangup AMI action in manager.c so we can use
all of it's channel search and AMI protocol handling without
duplicating that code in dialplan_functions.c.

Added a lookup function to res_pjsip.c that takes in the
string represenation of the pjsip_status_code enum and returns
the actual status code.  I.E.  ast_sip_str2rc("DECLINE") returns
603.  This allows the caller to specify PJSIPHangup(decline) in
the dialplan, just like Hangup(call_rejected).

Also extracted the XML documentation to its own file since it was
almost as large as the code itself.

UserNote: A new dialplan app PJSIPHangup and AMI action allows you
to hang up an unanswered incoming PJSIP call with a specific SIP
response code in the 400 -> 699 range.
2023-11-07 16:32:19 +00:00
Holger Hans Peter Freyther
9fd2655d5a stasis: Update the snapshot after setting the redirect
The previous commit added the caller_rdnis attribute. Make it
avialble during a possible ChanngelHangupRequest.
2023-11-07 14:27:13 +00:00
Holger Hans Peter Freyther
da0b1ac1c1 ari: Provide the caller ID RDNIS for the channels
Provide the caller ID RDNIS when available. This will allow an
application to follow the redirect.
2023-11-07 14:27:12 +00:00
Brad Smith
29a3e5660b main/utils: Implement ast_get_tid() for OpenBSD
Implement the ast_get_tid() function for OpenBSD. OpenBSD supports
getting the TID via getthrid().
2023-11-07 12:56:17 +00:00
Naveen Albert
65f83311b7 core_local: Fix local channel parsing with slashes.
Currently, trying to call a Local channel with a slash
in the extension will fail due to the parsing of characters
after such a slash as being dial modifiers. Additionally,
core_local is inconsistent and incomplete with
its parsing of Local dial strings in that sometimes it
uses the first slash and at other times it uses the last.

For instance, something like DAHDI/5 or PJSIP/device
is a perfectly usable extension in the dialplan, but Local
channels in particular prevent these from being called.

This creates inconsistent behavior for users, since using
a slash in an extension is perfectly acceptable, and using
a Goto to accomplish this works fine, but if specified
through a Local channel, the parsing prevents this.

This fixes this by explicitly parsing options from the
last slash in the extension, rather than the first one,
which doesn't cause an issue for extensions with slashes.

ASTERISK-30013 #close

Resolves: #248
2023-11-02 21:38:09 +00:00
Bastian Triller
1cbbf36929 func_json: Fix crashes for some types
This commit fixes crashes in JSON_DECODE() for types null, true, false
and real numbers.

In addition it ensures that a path is not deeper than 32 levels.

Also allow root object to be an array.

Add unit tests for above cases.
2023-10-05 14:38:01 +00:00
Eduardo
ca1ed84820 codec_builtin: Use multiples of 20 for maximum_ms
Some providers require a multiple of 20 for the maxptime or fail to complete calls,
e.g. Vivo in Brazil. To increase compatibility, only multiples of 20 are now used.

Resolves: #260
2023-09-22 16:10:07 +00:00
George Joseph
e1050b4add lock.c: Separate DETECT_DEADLOCKS from DEBUG_THREADS
Previously, DETECT_DEADLOCKS depended on DEBUG_THREADS.
Unfortunately, DEBUG_THREADS adds a lot of lock tracking overhead
to all of the lock lifecycle calls whereas DETECT_DEADLOCKS just
causes the lock calls to loop over trylock in 200us intervals until
the lock is obtained and spits out log messages if it takes more
than 5 seconds.  From a code perspective, the only reason they were
tied together was for logging.  So... The ifdefs in lock.c were
refactored to allow DETECT_DEADLOCKS to be enabled without
also enabling DEBUG_THREADS.

Resolves: #321

UserNote: You no longer need to select DEBUG_THREADS to use
DETECT_DEADLOCKS.  This removes a significant amount of overhead
if you just want to detect possible deadlocks vs needing full
lock tracing.
2023-09-22 14:34:37 +00:00
George Joseph
fc516f5781 asterisk.c: Use the euid's home directory to read/write cli history
The CLI .asterisk_history file is read from/written to the directory
specified by the HOME environment variable. If the root user starts
asterisk with the -U/-G options, or with runuser/rungroup set in
asterisk.conf, the asterisk process is started as root but then it
calls setuid/setgid to set the new user/group. This does NOT reset
the HOME environment variable to the new user's home directory
though so it's still left as "/root". In this case, the new user
will almost certainly NOT have access to read from or write to the
history file.

* Added function process_histfile() which calls
  getpwuid(geteuid()) and uses pw->dir as the home directory
  instead of the HOME environment variable.
* ast_el_read_default_histfile() and ast_el_write_default_histfile()
  have been modified to use the new process_histfile()
  function.

Resolves: #337
2023-09-22 13:34:18 +00:00
Mike Bradeen
4592f97c36 cel: add publish user event helper
Add a wrapper function around ast_cel_publish_event that
packs event and extras into a blob before publishing

Resolves:#330
2023-09-21 14:47:13 +00:00
George Joseph
0e0f99db1d file.c: Add ability to search custom dir for sounds
To better co-exist with sounds files that may be managed by
packages, custom sound files may now be placed in
AST_DATA_DIR/sounds/custom instead of the standard
AST_DATA_DIR/sounds/<lang> directory.  If the new
"sounds_search_custom_dir" option in asterisk.conf is set
to "true", asterisk will search the custom directory for sounds
files before searching the standard directory.  For performance
reasons, the "sounds_search_custom_dir" defaults to "false".

Resolves: #315

UserNote: A new option "sounds_search_custom_dir" has been added to
asterisk.conf that allows asterisk to search
AST_DATA_DIR/sounds/custom for sounds files before searching the
standard AST_DATA_DIR/sounds/<lang> directory.
2023-09-20 19:14:58 +00:00
George Joseph
42f82d55b0 make_buildopts_h, et. al. Allow adding all cflags to buildopts.h
The previous behavior of make_buildopts_h was to not add the
non-ABI-breaking MENUSELECT_CFLAGS like DETECT_DEADLOCKS,
REF_DEBUG, etc. to the buildopts.h file because "it caused
ccache to invalidate files and extended compile times". They're
only defined by passing them on the gcc command line with '-D'
options.   In practice, including them in the include file rarely
causes any impact because the only time ccache cares is if you
actually change an option so the hit occurrs only once after
you change it.

OK so why would we want to include them?  Many IDEs follow the
include files to resolve defines and if the options aren't in an
include file, it can cause the IDE to mark blocks of "ifdeffed"
code as unused when they're really not.

So...

* Added a new menuselect compile option ADD_CFLAGS_TO_BUILDOPTS_H
  which tells make_buildopts_h to include the non-ABI-breaking
  flags in buildopts.h as well as the ABI-breaking ones. The default
  is disabled to preserve current behavior.  As before though,
  only the ABI-breaking flags appear in AST_BUILDOPTS and only
  those are used to calculate AST_BUILDOPT_SUM.
  A new AST_BUILDOPT_ALL define was created to capture all of the
  flags.

* make_version_c was streamlined to use buildopts.h and also to
  create asterisk_build_opts_all[] and ast_get_build_opts_all(void)

* "core show settings" now shows both AST_BUILDOPTS and
  AST_BUILDOPTS_ALL.

UserNote: The "Build Options" entry in the "core show settings"
CLI command has been renamed to "ABI related Build Options" and
a new entry named "All Build Options" has been added that shows
both breaking and non-breaking options.
2023-09-14 17:58:17 +00:00
Naveen Albert
9e6266e008 pbx.c: Fix gcc 12 compiler warning.
Resolves: #277
2023-08-28 13:38:03 +00:00
Maximilian Fridrich
48e6a482c2 main/refer.c: Fix double free in refer_data_destructor + potential leak
Resolves: #267
2023-08-22 13:30:51 +00:00
Joshua C. Colp
a75035be55 manager: Tolerate stasis messages with no channel snapshot.
In some cases I have yet to determine some stasis messages may
be created without a channel snapshot. This change adds some
tolerance to this scenario, preventing a crash from occurring.
2023-08-11 13:28:58 +00:00
Maximilian Fridrich
51a7b18038 core/ari/pjsip: Add refer mechanism
This change adds support for refers that are not session based. It
includes a refer implementation for the PJSIP technology which results
in out-of-dialog REFERs being sent to a PJSIP endpoint. These can be
triggered using the new ARI endpoint `/endpoints/refer`.

Resolves: #71

UserNote: There is a new ARI endpoint `/endpoints/refer` for referring
an endpoint to some URI or endpoint.
2023-08-09 15:10:46 +00:00
Joshua C. Colp
806515597e audiohook: Unlock channel in mute if no audiohooks present.
In the case where mute was called on a channel that had no
audiohooks the code was not unlocking the channel, resulting
in a deadlock.

Resolves: #233
2023-08-09 14:50:07 +00:00
Mike Bradeen
a55fd5e471 utils: add lock timestamps for DEBUG_THREADS
Adds last locked and unlocked timestamps as well as a
counter for the number of times the lock has been
attempted (vs locked/unlocked) to debug output printed
using the DEBUG_THREADS option.

Resolves: #110
2023-06-29 15:13:55 +00:00
Jaco Kroon
73326fb4e0 tcptls: when disabling a server port, we should set the accept_fd to -1.
If we don't set this to -1 if the structure can be potentially re-used
later then it's possible that we'll issue a close() on an unrelated file
descriptor, breaking asterisk in other interesting ways.

I believe this to be an unlikely scenario, but it costs nothing to be
safe.

Signed-off-by: Jaco Kroon <jaco@uls.co.za>
2023-06-12 14:07:32 +00:00
George Joseph
6b4f49c0df build: Fix a few gcc 13 issues
* gcc 13 is now catching when a function is declared as returning
  an enum but defined as returning an int or vice versa.  Fixed
  a few in app.h, loader.c, stasis_message.c.

* gcc 13 is also now (incorrectly) complaining of dangling pointers
  when assigning a pointer to a local char array to a char *. Had
  to change that to an ast_alloca.

Resolves: #155
2023-06-09 18:19:53 +00:00
Ben Ford
cfde21c0c7 AMI: Add CoreShowChannelMap action.
Adds a new AMI action (CoreShowChannelMap) that takes in a channel name
and provides a list of all channels that are connected to that channel,
following local channel connections as well.

Resolves: #104

UserNote: New AMI action CoreShowChannelMap has been added.
2023-06-05 12:29:35 -06:00
Mike Bradeen
1f337f6034 indications: logging changes
Increase verbosity to indicate failure due to missing country
and to specify default on CLI dump

Resolves: #89
2023-06-05 07:30:51 -06:00
Naveen Albert
8b864b12cf callerid: Allow specifying timezone for date/time.
The Caller ID generation routine currently is hardcoded
to always use the system time zone. This makes it possible
to optionally specify any TZ-format time zone.

Resolves: #98
ASTERISK-30330
2023-05-25 10:46:40 -06:00
InterLinked1
ad6ff4cbf2 asterisk.c: Fix option warning for remote console. (#103)
Commit 09e989f972
categorized the T option as not being compatible
with remote consoles, but they do affect verbose
messages with remote console. This fixes this.

Resolves: #102
2023-05-22 12:59:56 -06:00
Sean Bright
d59a8ef59e xml.c: Process XML Inclusions recursively. (#69)
If processing an XInclude results in new <xi:include> elements, we
need to run XInclude processing again. This continues until no
replacement occurs or an error is encountered.

There is a separate issue with dynamic strings (ast_str) that will be
addressed separately.

Resolves: #65
2023-05-11 13:03:33 -06:00
Mike Bradeen
cd48733353 cel: add local optimization begin event (#54)
The current AST_CEL_LOCAL_OPTIMIZE event is and has been
triggered on a local optimization end to serve as a flag
indicating the event occurred.  This change adds a second
AST_CEL_LOCAL_OPTIMIZE_BEGIN event for further detail.

Resolves: #52

UpgradeNote: The existing AST_CEL_LOCAL_OPTIMIZE can continue
to be used as-is and the AST_CEL_LOCAL_OPTIMIZE_BEGIN event
can be ignored if desired.

UserNote: The new AST_CEL_LOCAL_OPTIMIZE_BEGIN can be used
by itself or in conert with the existing
AST_CEL_LOCAL_OPTIMIZE to book-end local channel optimizaion.
2023-05-04 08:51:55 -06:00
InterLinked1
ffb90c4549 say.c: Fix French time playback. (#42)
ast_waitstream was not called after ast_streamfile,
resulting in "o'clock" being skipped in French.

Additionally, the minute announcements should be
feminine.

Reported-by: Danny Lloyd

Resolves: #41
ASTERISK-30488
2023-05-02 08:09:42 -06:00
Naveen Albert
0119f3ad48 res_pjsip_stir_shaken: Fix JSON field ordering and disallowed TN characters.
The current STIR/SHAKEN signing process is inconsistent with the
RFCs in a couple ways that can cause interoperability issues.

RFC8225 specifies that the keys must be ordered lexicographically, but
currently the fields are simply ordered according to the order
in which they were added to the JSON object, which is not
compliant with the RFC and can cause issues with some carriers.

To fix this, we now leverage libjansson's ability to dump a JSON
object sorted by key value, yielding the correct field ordering.

Additionally, telephone numbers must have any leading + prefix removed
and must not contain characters outside of 0-9, *, and # in order
to comply with the RFCs. Numbers are now properly formatted as such.

ASTERISK-30407 #close

Change-Id: Iab76d39447c4b8cf133de85657dba02fda07f9a2
2023-04-10 17:31:07 -05:00
George Joseph
1245e3330b test.c: Fix counting of tests and add 2 new tests
The unit test XML output was counting all registered tests as "run"
even when only a subset were actually requested to be run and
the "failures" attribute was missing.

* The "tests" attribute of the "testsuite" element in the
  output XML now reflects only the tests actually requested
  to be executed instead of all the tests registered.

* The "failures" attribute was added to the "testsuite"
  element.

Also added 2 new unit tests that just pass and fail to be
used for CI testing.

Change-Id: Ia137814b5aeb0e1a44c75034bd3615c26021da69
2023-04-03 07:41:08 -06:00
Sean Bright
acd1513111 ael: Regenerate lexers and parsers.
Various changes to ensure that the lexers and parsers can be correctly
generated when REBUILD_PARSERS is enabled.

Some notes:

* Because of the version of flex we are using to generate the lexers
  (2.5.35) some post-processing in the Makefile is still required.

* The generated lexers do not contain the problematic C99 check that
  was being replaced by the call to sed in the respective Makefiles so
  it was removed.

* Since these files are generated, they will include trailing
  whitespace in some places. This does not need to be corrected.

Change-Id: Ibbd343606fcf5c0d285b1599e6e8e59f514f2e4e
2023-04-03 07:58:23 -05:00
Sean Bright
7dc73c8151 loader.c: Minor module key check simplification.
Change-Id: I65aefd4434a783096165c179b5f94f2e4810dffe
2023-04-03 07:11:36 -05:00
Mike Bradeen
edd7f1b060 bridge_builtin_features: add beep via touch variable
Add periodic beep option to one-touch recording by setting
the touch variable TOUCH_MONITOR_BEEP or
TOUCH_MIXMONITOR_BEEP to the desired interval in seconds.

If the interval is less than 5 seconds, a minimum of 5
seconds will be imposed.  If the interval is set to an
invalid value, it will default to 15 seconds.

A new test event PERIODIC_HOOK_ENABLED was added to the
func_periodic_hook hook_on function to indicate when
a hook is started.  This is so we can test that the touch
variable starts the hook as expected.

ASTERISK-30446

Change-Id: I800e494a789ba7a930bbdcd717e89d86040d6661
2023-03-20 10:46:17 -05:00
Mike Bradeen
c4a55322bc res_mixmonitor: MixMonitorMute by MixMonitor ID
While it is possible to create multiple mixmonitor instances
on a channel, it was not previously possible to mute individual
instances.

This change includes the ability to specify the MixMonitorID
when calling the manager action: MixMonitorMute.  This will
allow an individual MixMonitor instance to be muted via id.
This id can be stored as a channel variable using the 'i'
MixMonitor option.

As part of this change, if no MixMonitorID is specified in
the manager action MixMonitorMute, Asterisk will set the mute
flag on all MixMonitor spy-type audiohooks on the channel.
This is done via the new audiohook function:
ast_audiohook_set_mute_all.

ASTERISK-30464

Change-Id: Ibba8c7e750577aa1595a24b23316ef445245be98
2023-03-20 09:29:23 -05:00
Mike Bradeen
76da3c71a7 cli: increase channel column width
For 'core show channels', the Channel name field is increased
to 64 characters and the Location name field is increased to
32 characters.

For 'core show channels verbose', the Channel name field is
increased to 80 characters, the Context is increased to 24
characters and the Extension is increased to 24 characters.

ASTERISK-30455

Change-Id: Ibec3742ce360ffc93bc56e9984c2a21dabc4d5e1
2023-03-16 10:44:13 -05:00
Boris P. Korzun
e971396546 http.c: Minor simplification to HTTP status output.
Change the HTTP status page (located at /httpstatus by default) by:

* Combining the address and port into a single line.
* Changing "SSL" to "TLS"

ASTERISK-30433 #close

Change-Id: Id2ccb1218f00a68424aca2b651647d8b1f549bcb
2023-03-16 07:21:33 -05:00
Fabrice Fontaine
b0635a5fcf main/iostream.c: fix build with libressl
Fix the following build failure with libressl by using SSL_is_server
which is available since version 2.7.0 and
d7ec516916:

iostream.c: In function 'ast_iostream_close':
iostream.c:559:41: error: invalid use of incomplete typedef 'SSL' {aka 'struct ssl_st'}
  559 |                         if (!stream->ssl->server) {
      |                                         ^~

ASTERISK-30107 #close

Fixes: - http://autobuild.buildroot.org/results/ce4d62d00bb77ba5b303cacf6be7e350581a62f9
Change-Id: Iea7f34970297f2fb50285d73462d0174ba7e9587
2023-03-06 11:25:32 -06:00
George Joseph
25f7753f46 res_pjsip: Replace invalid UTF-8 sequences in callerid name
* Added a new function ast_utf8_replace_invalid_chars() to
  utf8.c that copies a string replacing any invalid UTF-8
  sequences with the Unicode specified U+FFFD replacement
  character.  For example:  "abc\xffdef" becomes "abc\uFFFDdef".
  Any UTF-8 compliant implementation will show that character
  as a � character.

* Updated res_pjsip:set_id_from_hdr() to use
  ast_utf8_replace_invalid_chars and print a warning if any
  invalid sequences were found during the copy.

* Updated stasis_channels:ast_channel_publish_varset to use
  ast_utf8_replace_invalid_chars and print a warning if any
  invalid sequences were found during the copy.

ASTERISK-27830

Change-Id: I4ffbdb19c80bf0efc675d40078a3ca4f85c567d8
2023-03-01 09:50:02 -06:00
Sean Bright
2e78d1083e test.c: Avoid passing -1 to FD_* family of functions.
This avoids buffer overflow errors when running tests that capture
output from child processes.

This also corrects a copypasta in an off-nominal error message.

Change-Id: Ib482847a3515364f14c7e7a0c0a4213851ddb10d
2023-02-28 10:48:53 -06:00
Sean Bright
c85fc1278f doxygen: Fix doxygen errors.
Change-Id: Ic50e95b4fc10f74ab15416d908e8a87ee8ec2f85
2023-01-31 11:23:11 -06:00
Mike Bradeen
6b03d60c7d res_monitor: Remove deprecated module.
ASTERISK-30303

Change-Id: I0462caefb4f9544e2e2baa23c498858310b52d50
2023-01-13 08:32:33 -06:00
Mike Bradeen
e8f548c155 app_macro: Remove deprecated module.
For most modules that interacted with app_macro, this change is limited
to no longer looking for the current context from the macrocontext when
set.  Additionally, the following modules are impacted:

app_dial - no longer supports M^ connected/redirecting macro
app_minivm - samples written using macro will no longer work.
The sample needs a re-write

app_queue - can no longer a macro on the called party's channel.
Use gosub which is currently supported

ccss - no callback macro, gosub only

app_voicemail - no macro support

channel  - remove macrocontext and priority, no connected line or
redirection macro options
options - stdexten is deprecated to gosub as the default and only
pbx - removed macrolock
pbx_dundi - no longer look for macro

snmp - removed macro context, exten, and priority

ASTERISK-30304

Change-Id: I830daab293117179b8d61bd4df0d971a1b3d07f6
2023-01-10 14:07:44 -06:00
George Joseph
7dc8773178 res_rtp_asterisk: Asterisk Media Experience Score (MES)
-----------------

This commit reinstates MES with some casting fixes to the
functions in time.h that convert between doubles and timeval
structures.  The casting issues were causing incorrect
timestamps to be calculated which caused transcoding from/to
G722 to produce bad or no audio.

ASTERISK-30391

-----------------

This module has been updated to provide additional
quality statistics in the form of an Asterisk
Media Experience Score.  The score is avilable using
the same mechanisms you'd use to retrieve jitter, loss,
and rtt statistics.  For more information about the
score and how to retrieve it, see
https://wiki.asterisk.org/wiki/display/AST/Media+Experience+Score

* Updated chan_pjsip to set quality channel variables when a
  call ends.
* Updated channels/pjsip/dialplan_functions.c to add the ability
  to retrieve the MES along with the existing rtcp stats when
  using the CHANNEL dialplan function.
* Added the ast_debug_rtp_is_allowed and ast_debug_rtcp_is_allowed
  checks for debugging purposes.
* Added several function to time.h for manipulating time-in-samples
  and times represented as double seconds.
* Updated rtp_engine.c to pass through the MES when stats are
  requested.  Also debug output that dumps the stats when an
  rtp instance is destroyed.
* Updated res_rtp_asterisk.c to implement the calculation of the
  MES.  In the process, also had to update the calculation of
  jitter.  Many debugging statements were also changed to be
  more informative.
* Added a unit test for internal testing.  The test should not be
  run during normal operation and is disabled by default.

Change-Id: I4fce265965e68c3fdfeca55e614371ee69c65038
2023-01-09 11:40:58 -06:00