Stasis: Allow message types to be blocked

This introduces stasis.conf and a mechanism to prevent certain message
types from being published. Internally, this works by preventing the
chosen message types from being created which ensures that those
message types can never be published. This patch also adjusts message
publishers such that message payloads are not created if the related
message type is not available.

ASTERISK-23943 #close
Review: https://reviewboard.asterisk.org/r/3823/


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@420124 65c4cc65-6c06-0410-ace0-fbb531ad65f3

configs/samples/stasis.conf.sample

@@ -0,0 +1,122 @@
+[declined_message_types]
+; This config section contains the names of message types that should be prevented
+; from being created. By default, all message types are allowed to be created.
+;
+; Using this functionality requires knowledge of the names of internal stasis
+; message types which is generally the same as the name of the accessor function.
+;
+; Use of this functionality may break more complex functionality in Asterisk
+; such as CEL, CDR, transfers, etc. and will likely cause related messages in ARI
+; and AMI to go missing.
+; decline=stasis_app_recording_snapshot_type
+; decline=stasis_app_playback_snapshot_type
+; decline=stasis_test_message_type
+; decline=confbridge_start_type
+; decline=confbridge_end_type
+; decline=confbridge_join_type
+; decline=confbridge_leave_type
+; decline=confbridge_start_record_type
+; decline=confbridge_stop_record_type
+; decline=confbridge_mute_type
+; decline=confbridge_unmute_type
+; decline=confbridge_talking_type
+; decline=cel_generic_type
+; decline=ast_bridge_snapshot_type
+; decline=ast_bridge_merge_message_type
+; decline=ast_channel_entered_bridge_type
+; decline=ast_channel_left_bridge_type
+; decline=ast_blind_transfer_type
+; decline=ast_attended_transfer_type
+; decline=ast_endpoint_snapshot_type
+; decline=ast_endpoint_state_type
+; decline=ast_device_state_message_type
+; decline=ast_test_suite_message_type
+; decline=ast_mwi_state_type
+; decline=ast_mwi_vm_app_type
+; decline=ast_format_register_type
+; decline=ast_format_unregister_type
+; decline=ast_manager_get_generic_type
+; decline=ast_parked_call_type
+; decline=ast_channel_snapshot_type
+; decline=ast_channel_dial_type
+; decline=ast_channel_varset_type
+; decline=ast_channel_hangup_request_type
+; decline=ast_channel_dtmf_begin_type
+; decline=ast_channel_dtmf_end_type
+; decline=ast_channel_hold_type
+; decline=ast_channel_unhold_type
+; decline=ast_channel_chanspy_start_type
+; decline=ast_channel_chanspy_stop_type
+; decline=ast_channel_fax_type
+; decline=ast_channel_hangup_handler_type
+; decline=ast_channel_moh_start_type
+; decline=ast_channel_moh_stop_type
+; decline=ast_channel_monitor_start_type
+; decline=ast_channel_monitor_stop_type
+; decline=ast_channel_agent_login_type
+; decline=ast_channel_agent_logoff_type
+; decline=ast_channel_talking_start
+; decline=ast_channel_talking_stop
+; decline=ast_security_event_type
+; decline=ast_named_acl_change_type
+; decline=ast_local_bridge_type
+; decline=ast_local_optimization_begin_type
+; decline=ast_local_optimization_end_type
+; decline=stasis_subscription_change_type
+; decline=ast_multi_user_event_type
+; decline=stasis_cache_clear_type
+; decline=stasis_cache_update_type
+; decline=ast_network_change_type
+; decline=ast_system_registry_type
+; decline=ast_cc_available_type
+; decline=ast_cc_offertimerstart_type
+; decline=ast_cc_requested_type
+; decline=ast_cc_requestacknowledged_type
+; decline=ast_cc_callerstopmonitoring_type
+; decline=ast_cc_callerstartmonitoring_type
+; decline=ast_cc_callerrecalling_type
+; decline=ast_cc_recallcomplete_type
+; decline=ast_cc_failure_type
+; decline=ast_cc_monitorfailed_type
+; decline=ast_presence_state_message_type
+; decline=ast_rtp_rtcp_sent_type
+; decline=ast_rtp_rtcp_received_type
+; decline=ast_call_pickup_type
+; decline=aoc_s_type
+; decline=aoc_d_type
+; decline=aoc_e_type
+; decline=dahdichannel_type
+; decline=mcid_type
+; decline=session_timeout_type
+; decline=cdr_read_message_type
+; decline=cdr_write_message_type
+; decline=cdr_prop_write_message_type
+; decline=corosync_ping_message_type
+; decline=agi_exec_start_type
+; decline=agi_exec_end_type
+; decline=agi_async_start_type
+; decline=agi_async_exec_type
+; decline=agi_async_end_type
+; decline=queue_caller_join_type
+; decline=queue_caller_leave_type
+; decline=queue_caller_abandon_type
+; decline=queue_member_status_type
+; decline=queue_member_added_type
+; decline=queue_member_removed_type
+; decline=queue_member_pause_type
+; decline=queue_member_penalty_type
+; decline=queue_member_ringinuse_type
+; decline=queue_agent_called_type
+; decline=queue_agent_connect_type
+; decline=queue_agent_complete_type
+; decline=queue_agent_dump_type
+; decline=queue_agent_ringnoanswer_type
+; decline=meetme_join_type
+; decline=meetme_leave_type
+; decline=meetme_end_type
+; decline=meetme_mute_type
+; decline=meetme_talking_type
+; decline=meetme_talk_request_type
+; decline=appcdr_message_type
+; decline=forkcdr_message_type
+; decline=cdr_sync_message_type