[PATCH 04/11] Add parser for cause objects

[Yang Gu <yang.gu@intel.com>]

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---
 src/stkutil.c |   25 +++++++++++++++++++++++++
 src/stkutil.h |    9 +++++++++
 2 files changed, 34 insertions(+), 0 deletions(-)

diff --git a/src/stkutil.c b/src/stkutil.c
index ec64af3..08d013b 100644
--- a/src/stkutil.c
+++ b/src/stkutil.c
@@ -628,6 +628,29 @@ static gboolean parse_dataobj_event_list(
 	return TRUE;
 }
 
+/* Defined in TS 102.223 Section 8.26 */
+static gboolean parse_dataobj_cause(
+		struct comprehension_tlv_iter *iter, void *user)
+{
+	struct stk_cause *cause = user;
+	const unsigned char *data;
+	unsigned int len = comprehension_tlv_iter_get_length(iter);
+
+	if ((len == 1) || (len > sizeof(cause->cause)))
+		return FALSE;
+
+	cause->has_cause = TRUE;
+
+	if (len == 0)
+		return TRUE;
+
+	data = comprehension_tlv_iter_get_data(iter);
+	cause->len = len;
+	memcpy(cause->cause, data, len);
+
+	return TRUE;
+}
+
 /* Defined in TS 102.223 Section 8.31 */
 static gboolean parse_dataobj_icon_id(struct comprehension_tlv_iter *iter,
 					void *user)
@@ -738,6 +761,8 @@ static dataobj_handler handler_for_type(enum stk_data_object_type type)
 		return parse_dataobj_items_next_action_indicator;
 	case STK_DATA_OBJECT_TYPE_EVENT_LIST:
 		return parse_dataobj_event_list;
+	case STK_DATA_OBJECT_TYPE_CAUSE:
+		return parse_dataobj_cause;
 	case STK_DATA_OBJECT_TYPE_ICON_ID:
 		return parse_dataobj_icon_id;
 	case STK_DATA_OBJECT_TYPE_IMMEDIATE_RESPONSE:
diff --git a/src/stkutil.h b/src/stkutil.h
index be89c9b..21f6e8a 100644
--- a/src/stkutil.h
+++ b/src/stkutil.h
@@ -403,6 +403,15 @@ struct stk_event_list {
 };
 
 /*
+ * According to 102.223 Section 8.26, the maximum length of cause is 30.
+ */
+struct stk_cause {
+	unsigned char cause[30];
+	unsigned int len;
+	ofono_bool_t has_cause;
+};
+
+/*
  * Defined in TS 102.223 Section 8.31
  * Icon ID denotes a file on the SIM filesystem.  Since EF cannot have record
  * ids of 0, we use icon_id with 0 to denote empty icon_identifier objects
-- 
1.6.3.3