ie: add <<TIME-DATE>> IE

Signed-off-by: Patrick McHardy <kaber@trash.net>

2 files changed, 104 insertions, 2 deletions

diff --git a/include/dect/ie.h b/include/dect/ie.h
index f53ae16..410d36e 100644
--- a/include/dect/ie.h
+++ b/include/dect/ie.h
@@ -1842,12 +1842,38 @@ struct dect_ie_mms_extended_header {
 
 /**
  * @}@}
- * @defgroup ie_time_data Time-Date
+ * @defgroup ie_time_date Time-Date
+ *
+ * <<TIME-DATE>> IE specified in ETSI EN 300 175-5 section 7.7.50.
+ *
+ * The <<TIME-DATE>> IE is used to provide a time and/or date.
+ *
+ * @sa ETSI EN 300 175-5 (Network (NWK) layer), section 7.7.50
  * @{
  */
 
+enum dect_time_date_coding {
+	DECT_TIME_DATE_TIME			= 0x1, /**< Time */
+	DECT_TIME_DATE_DATE			= 0x2, /**< Date */
+	DECT_TIME_DATE_TIME_AND_DATE		= 0x3, /**< Time and Date */
+};
+
+enum dect_time_date_interpretation {
+	DECT_TIME_DATE_CURRENT			= 0x0, /**< The current time/date */
+	DECT_TIME_DATE_DURATION			= 0x1, /**< Time duration */
+};
+
 struct dect_ie_time_date {
-	struct dect_ie_common		common;
+	struct dect_ie_common			common;
+	enum dect_time_date_coding		coding;
+	enum dect_time_date_interpretation	interpretation;
+	uint8_t					year;
+	uint8_t					month;
+	uint8_t					day;
+	uint8_t					hour;
+	uint8_t					minute;
+	uint8_t					second;
+	uint8_t					timezone;
 };
 
 /**
diff --git a/src/s_msg.c b/src/s_msg.c
index 4e035ef..06d1ca4 100644
--- a/src/s_msg.c
+++ b/src/s_msg.c
@@ -941,6 +941,79 @@ static int dect_sfmt_build_progress_indicator(struct dect_sfmt_ie *dst,
 	return 0;
 }
 
+static void dect_sfmt_dump_time_date(const struct dect_ie_common *_ie)
+{
+	const struct dect_ie_time_date *ie = dect_ie_container(ie, _ie);
+
+	if (ie->coding & 0x2)
+		sfmt_debug("\tDate: %u%u.%u%u.20%u%u\n",
+			   ie->day >> 4, ie->day & 0x0f,
+			   ie->month >> 4, ie->month & 0x0f,
+			   ie->year >> 4, ie->year & 0xf);
+
+	if (ie->coding & 0x1)
+		sfmt_debug("\tTime: %u%u:%u%u:%u%u %+dmin\n",
+			   ie->hour >> 4, ie->hour & 0x0f,
+			   ie->minute >> 4, ie->minute & 0x0f,
+			   ie->second >> 4, ie->second & 0xf,
+			   15 * (ie->timezone & 0x8 ? -1 : 1) *
+			   ((10 * (ie->timezone >> 4) & 0x7) +
+			    (ie->timezone & 0x0f)));
+}
+
+static int dect_sfmt_parse_time_date(const struct dect_handle *dh,
+				     struct dect_ie_common **ie,
+				     const struct dect_sfmt_ie *src)
+{
+	struct dect_ie_time_date *dst = dect_ie_container(dst, *ie);
+	unsigned int n;
+
+	dst->coding         = src->data[2] >> 6;
+	dst->interpretation = src->data[2] & 0x3f;
+	n = 3;
+
+	if (dst->coding & 0x2) {
+		dst->year     = src->data[n++];
+		dst->month    = src->data[n++];
+		dst->day      = src->data[n++];
+	}
+
+	if (dst->coding & 0x1) {
+		dst->hour     = src->data[n++];
+		dst->minute   = src->data[n++];
+		dst->second   = src->data[n++];
+		dst->timezone = src->data[n++];
+	}
+	return 0;
+}
+
+static int dect_sfmt_build_time_date(struct dect_sfmt_ie *dst,
+				     const struct dect_ie_common *ie)
+{
+	struct dect_ie_time_date *src = dect_ie_container(src, ie);
+	unsigned int n;
+
+	dst->data[2]  = src->coding << 6;
+	dst->data[2] |= src->interpretation;
+	n = 3;
+
+	if (src->coding & 0x2) {
+		dst->data[n++] = src->year;
+		dst->data[n++] = src->month;
+		dst->data[n++] = src->day;
+	}
+
+	if (src->coding & 0x1) {
+		dst->data[n++] = src->hour;
+		dst->data[n++] = src->minute;
+		dst->data[n++] = src->second;
+		dst->data[n++] = src->timezone;
+	}
+
+	dst->len = n;
+	return 0;
+}
+
 static int dect_sfmt_parse_multi_display(const struct dect_handle *dh,
 					 struct dect_ie_common **ie,
 					 const struct dect_sfmt_ie *src)
@@ -2119,6 +2192,9 @@ static const struct dect_ie_handler {
 	[DECT_IE_TIME_DATE]			= {
 		.name	= "TIME-DATA",
 		.size	= sizeof(struct dect_ie_time_date),
+		.parse	= dect_sfmt_parse_time_date,
+		.build	= dect_sfmt_build_time_date,
+		.dump	= dect_sfmt_dump_time_date,
 	},
 	[DECT_IE_MULTI_DISPLAY]			= {
 		.name	= "MULTI-DISPLAY",