[PATCH 3/4] Add parser for file list objects

[Yang Gu]

---
 src/stkutil.c |   42 ++++++++++++++++++++++++++++++++++++++++++
 src/stkutil.h |    6 ++++++
 2 files changed, 48 insertions(+), 0 deletions(-)

diff --git a/src/stkutil.c b/src/stkutil.c
index ceba2d5..9f3bc0b 100644
--- a/src/stkutil.c
+++ b/src/stkutil.c
@@ -406,6 +406,46 @@ static gboolean parse_dataobj_tone(struct comprehension_tlv_iter *iter,
 	return TRUE;
 }
 
+/* Defined in TS 102.223 Section 8.18 */
+static gboolean parse_dataobj_file_list(struct comprehension_tlv_iter *iter,
+						void *user)
+{
+	GSList **fl = user;
+	const unsigned char *data;
+	unsigned int len;
+	unsigned int i;
+	unsigned int start = 1;
+	struct stk_file *sf;
+
+	if (comprehension_tlv_iter_get_tag(iter) !=
+			STK_DATA_OBJECT_TYPE_FILE_LIST)
+		return FALSE;
+
+	len = comprehension_tlv_iter_get_length(iter);
+	if (len < 5)
+		return FALSE;
+
+	data = comprehension_tlv_iter_get_data(iter);
+
+	if (data[start] != 0x3f)
+		return FALSE;
+
+	for (i = start + 4; i <= len; i += 2) {
+		if ((data[i] == 0x3f) || (i == len)) {
+			sf = g_new0(struct stk_file, 1);
+			sf->file = g_malloc(i-start);
+			memcpy(sf->file, data+start, i-start);
+			sf->len = i - start;
+			*fl = g_slist_prepend(*fl, sf);
+			start = i;
+		}
+	}
+
+	*fl = g_slist_reverse(*fl);
+
+	return TRUE;
+}
+
 /* Defined in TS 102.223 Section 8.31 */
 static gboolean parse_dataobj_icon_id(struct comprehension_tlv_iter *iter,
 					void *user)
@@ -523,6 +563,8 @@ static dataobj_handler handler_for_type(enum stk_data_object_type type)
 		return parse_dataobj_text;
 	case STK_DATA_OBJECT_TYPE_TONE:
 		return parse_dataobj_tone;
+	case STK_DATA_OBJECT_TYPE_FILE_LIST:
+		return parse_dataobj_file_list;
 	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 b408f38..5b1a44b 100644
--- a/src/stkutil.h
+++ b/src/stkutil.h
@@ -345,6 +345,12 @@ struct stk_result {
 	unsigned char *additional;
 };
 
+/* Define the struct of single file in TS102.223 Section 8.18 */
+struct stk_file {
+	unsigned char *file;
+	unsigned int len;
+};
+
 /*
  * According to 102.223 Section 8.72 the length of text attribute CTLV is 1
  * byte.  This means that the maximum size is 127 according to the rules
-- 
1.6.3.3