Show initial channel values with `show channels`

Store some initial details about the channel separately so we can
preserve them across e.g. transfers and display them with show
channels.

With this commit, we store the original caller ID (name and number)
and IP address, and the call destination, dialplan, and context.

FS-4296 --resolve

Thanks-to: Mariusz Czułada <manieq.net@gmail.com>

src/switch_core_sqldb.c

@@ -2269,8 +2269,8 @@ static void core_event_handler(switch_event_t *event)
 			break;
 		}
 	case SWITCH_EVENT_CHANNEL_CREATE:
-		new_sql() = switch_mprintf("insert into channels (uuid,direction,created,created_epoch, name,state,callstate,dialplan,context,hostname) "
-								   "values('%q','%q','%q','%ld','%q','%q','%q','%q','%q','%q')",
+		new_sql() = switch_mprintf("insert into channels (uuid,direction,created,created_epoch, name,state,callstate,dialplan,context,hostname,initial_cid_name,initial_cid_num,initial_ip_addr,initial_dest,initial_dialplan,initial_context) "
+								   "values('%q','%q','%q','%ld','%q','%q','%q','%q','%q','%q','%q','%q','%q','%q','%q','%q')",
 								   switch_event_get_header_nil(event, "unique-id"),
 								   switch_event_get_header_nil(event, "call-direction"),
 								   switch_event_get_header_nil(event, "event-date-local"),
@@ -2279,7 +2279,13 @@ static void core_event_handler(switch_event_t *event)
 								   switch_event_get_header_nil(event, "channel-state"),
 								   switch_event_get_header_nil(event, "channel-call-state"),
 								   switch_event_get_header_nil(event, "caller-dialplan"),
-								   switch_event_get_header_nil(event, "caller-context"), switch_core_get_switchname()
+								   switch_event_get_header_nil(event, "caller-context"), switch_core_get_switchname(),
+								   switch_event_get_header_nil(event, "caller-caller-id-name"),
+								   switch_event_get_header_nil(event, "caller-caller-id-number"),
+								   switch_event_get_header_nil(event, "caller-network-addr"),
+								   switch_event_get_header_nil(event, "caller-destination-number"),
+								   switch_event_get_header_nil(event, "caller-dialplan"),
+								   switch_event_get_header_nil(event, "caller-context")
 								   );
 		break;
 	case SWITCH_EVENT_CHANNEL_ANSWER:
@@ -2666,7 +2672,13 @@ static char create_channels_sql[] =
 	"   callee_direction  VARCHAR(5),\n"
 	"   call_uuid  VARCHAR(256),\n"
 	"   sent_callee_name  VARCHAR(1024),\n"
-	"   sent_callee_num  VARCHAR(256)\n"
+	"   sent_callee_num  VARCHAR(256),\n"
+	"   initial_cid_name  VARCHAR(1024),\n"
+	"   initial_cid_num  VARCHAR(256),\n"
+	"   initial_ip_addr  VARCHAR(256),\n"
+	"   initial_dest  VARCHAR(1024),\n"
+	"   initial_dialplan  VARCHAR(128),\n"
+	"   initial_context  VARCHAR(128)\n"
 	");\n";
 
 static char create_calls_sql[] =
@@ -3385,7 +3397,7 @@ switch_status_t switch_core_sqldb_start(switch_memory_pool_t *pool, switch_bool_
 			char *err;
 			int result = 0;
 
-			switch_cache_db_test_reactive(sql_manager.dbh, "select call_uuid, read_bit_rate, sent_callee_name from channels", "DROP TABLE channels", create_channels_sql);
+			switch_cache_db_test_reactive(sql_manager.dbh, "select call_uuid, read_bit_rate, sent_callee_name, initial_cid_name, initial_cid_num, initial_ip_addr, initial_dest, initial_dialplan, initial_context from channels", "DROP TABLE channels", create_channels_sql);
 			switch_cache_db_test_reactive(sql_manager.dbh, "select * from detailed_calls where sent_callee_name=''", "DROP VIEW detailed_calls", detailed_calls_sql);
 			switch_cache_db_test_reactive(sql_manager.dbh, "select * from basic_calls where sent_callee_name=''", "DROP VIEW basic_calls", basic_calls_sql);
 			switch_cache_db_test_reactive(sql_manager.dbh, "select call_uuid from calls", "DROP TABLE calls", create_calls_sql);