add skip_cdr_causes variable to list call hangup causes that should not trigger cdr processing

src/include/switch_types.h

@@ -163,6 +163,7 @@ SWITCH_BEGIN_EXTERN_C
 #define SWITCH_API_REPORTING_HOOK_VARIABLE "api_reporting_hook"
 #define SWITCH_SESSION_IN_HANGUP_HOOK_VARIABLE "session_in_hangup_hook"
 #define SWITCH_PROCESS_CDR_VARIABLE "process_cdr"
+#define SWITCH_SKIP_CDR_CAUSES_VARIABLE "skip_cdr_causes"
 #define SWITCH_FORCE_PROCESS_CDR_VARIABLE "force_process_cdr"
 #define SWITCH_BRIDGE_CHANNEL_VARIABLE "bridge_channel"
 #define SWITCH_CHANNEL_NAME_VARIABLE "channel_name"

src/switch_core_state_machine.c

@@ -662,6 +662,7 @@ SWITCH_DECLARE(void) switch_core_session_reporting_state(switch_core_session_t *
 	int silly = 0;
 	int index = 0;
 	const char *var = switch_channel_get_variable(session->channel, SWITCH_PROCESS_CDR_VARIABLE);
+	const char *skip_var = switch_channel_get_variable(session->channel, SWITCH_SKIP_CDR_CAUSES_VARIABLE);
 	const char *hook_var;
 	int use_session = 0;
 	switch_event_t *event;
@@ -695,6 +696,22 @@ SWITCH_DECLARE(void) switch_core_session_reporting_state(switch_core_session_t *
 		}
 	}
 
+
+	if (!zstr(skip_var)) {
+		int x, ttl = 0;
+		char *list[128] = { 0 };
+		char *dup = switch_core_session_strdup(session, skip_var);
+
+		ttl = switch_split(dup, '|', list);
+
+		for(x = 0; x < ttl; x++) {
+			if (switch_channel_str2cause(list[x]) == cause) {
+				do_extra_handlers = 0;
+				break;
+			}
+		}
+	}
+
 	if (switch_channel_test_flag(session->channel, CF_NO_CDR)) {
 		do_extra_handlers = 0;
 	}