From 9e5cbc3c00e4e8ab1678baf5d8ff369a9345da09 Mon Sep 17 00:00:00 2001
From: Sukru Senli <sukru.senli@iopsys.eu>
Date: Fri, 5 Dec 2025 13:55:12 +0100
Subject: [PATCH] temperature: show optical transceiver temperature

---
 src/temperature.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/src/temperature.c b/src/temperature.c
index cdd12df..1bf736e 100644
--- a/src/temperature.c
+++ b/src/temperature.c
@@ -373,6 +373,35 @@ static void scan_thermal_zones(json_object *sensors_array)
 	closedir(dir);
 }
 
+static void scan_xpon_sensors(json_object *sensors_array)
+{
+	FILE *fp;
+	char output[256];
+	int temp_value = 0;
+
+	fp = popen("ubus -t 1 call xpon status 2>/dev/null | jsonfilter -e '@.ONU[0].ANI[0].Transceiver[0].Temperature'", "r"); // flawfinder: ignore
+	if (!fp)
+		return;
+
+	if (fgets(output, sizeof(output), fp) != NULL) {
+		char *endptr;
+		long val = strtol(output, &endptr, 10);
+		if (endptr != output && val >= INT_MIN && val <= INT_MAX) {
+			temp_value = (int)val;
+
+			/* Create JSON object for optical transceiver sensor */
+			json_object *sensor = json_object_new_object();
+			json_object_object_add(sensor, "name", json_object_new_string("optical_transceiver"));
+			json_object_object_add(sensor, "sysfs_path", json_object_new_string(""));
+			json_object_object_add(sensor, "temperature", json_object_new_int(temp_value));
+			json_object_object_add(sensor, "source", json_object_new_string("xpon"));
+			json_object_array_add(sensors_array, sensor);
+		}
+	}
+
+	pclose(fp);
+}
+
 static void discover_sensors(json_object **sensors_data)
 {
 	*sensors_data = json_object_new_array();
@@ -388,6 +417,9 @@ static void discover_sensors(json_object **sensors_data)
 
 	/* Scan WiFi sensors via wlctl (Broadcom) */
 	scan_wlctl_sensors(*sensors_data);
+
+	/* Scan optical transceiver sensors via xpon */
+	scan_xpon_sensors(*sensors_data);
 }
 
 static int browseTemperatureSensor(struct dmctx *dmctx, DMNODE *parent_node, void *prev_data, char *prev_instance)