Merged revisions 58894 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r58894 | russell | 2007-03-14 11:33:01 -0500 (Wed, 14 Mar 2007) | 8 lines

By default, don't attempt to do any CallerID handling at all with SLA because
it is known to not work properly in some situations.  However, add an option to
enable it for those that would like to use it anyway.

The short story behind this is that to properly handle CallerID with SLA, we
need the ability to change the CallerID on an existing call, and we are not
ready to handle that.

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@58895 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_meetme.c

@@ -496,7 +496,7 @@ struct sla_ringing_station {
 /*!
  * \brief A structure for data used by the sla thread
  */
-static struct sla {
+static struct {
 	/*! The SLA thread ID */
 	pthread_t thread;
 	ast_cond_t cond;
@@ -506,6 +506,9 @@ static struct sla {
 	AST_LIST_HEAD_NOLOCK(, sla_failed_station) failed_stations;
 	AST_LIST_HEAD_NOLOCK(, sla_event) event_q;
 	unsigned int stop:1;
+	/*! Attempt to handle CallerID, even though it is known not to work
+	 *  properly in some situations. */
+	unsigned int attempt_callerid:1;
 } sla = {
 	.thread = AST_PTHREADT_NULL,
 };
@@ -3496,7 +3499,8 @@ static int sla_ring_station(struct sla_ringing_trunk *ringing_trunk, struct sla_
 		return -1;
 	}
 
-	if (ast_dial_run(dial, ringing_trunk->trunk->chan, 1) != AST_DIAL_RESULT_TRYING) {
+	if (ast_dial_run(dial, sla.attempt_callerid ? ringing_trunk->trunk->chan : NULL, 1) 
+		!= AST_DIAL_RESULT_TRYING) {
 		struct sla_failed_station *failed_station;
 		ast_dial_destroy(dial);
 		if (!(failed_station = ast_calloc(1, sizeof(*failed_station))))
@@ -3956,7 +3960,7 @@ static void *dial_trunk(void *data)
 		return NULL;
 	}
 
-	dial_res = ast_dial_run(dial, trunk_ref->chan, 1);
+	dial_res = ast_dial_run(dial, sla.attempt_callerid ? trunk_ref->chan : NULL, 1);
 	if (dial_res != AST_DIAL_RESULT_TRYING) {
 		ast_mutex_lock(args->cond_lock);
 		ast_cond_signal(args->cond);
@@ -4638,6 +4642,7 @@ static int sla_load_config(void)
 	struct ast_config *cfg;
 	const char *cat = NULL;
 	int res = 0;
+	const char *val;
 
 	ast_mutex_init(&sla.lock);
 	ast_cond_init(&sla.cond, NULL);
@@ -4645,9 +4650,11 @@ static int sla_load_config(void)
 	if (!(cfg = ast_config_load(SLA_CONFIG_FILE)))
 		return 0; /* Treat no config as normal */
 
+	if ((val = ast_variable_retrieve(cfg, "general", "attemptcallerid")))
+		sla.attempt_callerid = ast_true(val);
+
 	while ((cat = ast_category_browse(cfg, cat)) && !res) {
 		const char *type;
-		/* Reserve "general" for ... general stuff! */
 		if (!strcasecmp(cat, "general"))
 			continue;
 		if (!(type = ast_variable_retrieve(cfg, cat, "type"))) {

configs/sla.conf.sample

@@ -6,8 +6,12 @@
 
 ; ---- General Options ----------------
 [general]
-; There are none!
 
+;attemptcallerid=no         ; Attempt CallerID handling.  The default value for this
+                            ; is "no" because CallerID handling with an SLA setup is
+                            ; known to not work properly in some situations.  However,
+                            ; feel free to enable it if you would like.  If you do, and
+                            ; you find problems, please do not report them.
 ; -------------------------------------