timemngr: Added support for SupportedZones object

(cherry picked from commit fea3e1e4ef)

fea3e1e4 timemngr: Added support for SupportedZones object

Co-authored-by: Amin Ben Romdhane <amin.benromdhane@iopsys.eu>

timemngr/Makefile

@@ -5,13 +5,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=timemngr
-PKG_VERSION:=1.1.9
+PKG_VERSION:=1.1.10
 
 LOCAL_DEV:=0
 ifneq ($(LOCAL_DEV),1)
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=https://dev.iopsys.eu/bbf/timemngr.git
-PKG_SOURCE_VERSION:=c0c15beee2b60925f51b8ba78be516d2f5536c65
+PKG_SOURCE_VERSION:=2da5a2a1270d59fed49d576afda0a6ffab264576
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
 PKG_MIRROR_HASH:=skip
 endif
@@ -81,6 +81,7 @@ endif
 	$(INSTALL_DATA) ./files/etc/config/time $(1)/etc/config/
 ifeq ($(CONFIG_TIMEMNGR_NTPD),y)
 	$(CP) ./files/etc/timemngr/ntpd_config.sh $(1)/etc/timemngr/time.sh
+	$(CP) ./files/etc/timemngr/generate_supported_zones.sh $(1)/etc/timemngr/generate_supported_zones.sh
 endif
 endif
 

timemngr/files/etc/config/time

@@ -2,3 +2,4 @@ config global 'global'
         option enable '1'
         option dst '1'
         option loglevel '2'
+        option supported_zones_file '/etc/timemngr/supported_zones.json'

timemngr/files/etc/init.d/timemngr

@@ -4,10 +4,13 @@ START=20
 STOP=01
 
 . /etc/timemngr/time.sh
+. /etc/timemngr/generate_supported_zones.sh
 
 USE_PROCD=1
 PROG_UBUS=/usr/sbin/timemngr
 
+DEFAULT_SUPPORTED_ZONES_PATH="/etc/timemngr/supported_zones.json"
+
 log() {
 	echo "${@}"|logger -t timemngr.init -p info
 }
@@ -30,6 +33,20 @@ boot() {
 	else
 		sed -i '/#timemngr-dst/d' /etc/crontabs/root
 	fi
+	
+	config_get file_path global supported_zones_file
+	
+	# If option is not configured, use the default path
+	if [ -z "${file_path}" ]; then
+		file_path="${DEFAULT_SUPPORTED_ZONES_PATH}"
+		uci -q set time.global.supported_time_zone_file="${DEFAULT_SUPPORTED_ZONES_PATH}"
+		uci -q commit time
+	fi
+
+	# If the JSON file doesn't exist, generate it
+	if [ ! -f "${file_path}" ]; then
+		generate_supported_zones > "${file_path}"
+	fi
 
 	start
 }

timemngr/files/etc/timemngr/generate_supported_zones.sh

@@ -0,0 +1,75 @@
+#!/bin/sh
+
+. /usr/share/libubox/jshn.sh
+
+# Default temporary file for timezone mapping
+TMP_MAP="/tmp/timezone_map.txt"
+
+# -----------------------------------------------------------------------------
+# Function: generate_supported_zones
+# Description: Generates a JSON array of supported zones in the format:
+# [
+#   { "time_zone": "TZ_STRING", "zone_name": "Region/City,Region/City" },
+#   ...
+# ]
+# Output: Prints the JSON to stdout (caller can redirect to a file)
+# -----------------------------------------------------------------------------
+generate_supported_zones() {
+    : > "$TMP_MAP"
+
+    # Step 1: Collect zonename -> timezone mappings into TMP_MAP
+    for entry in /usr/share/zoneinfo/*; do
+        [ -d "$entry" ] || continue
+        region=$(basename "$entry")
+
+        for zonefile in "$entry"/*; do
+            [ -f "$zonefile" ] || continue
+            city=$(basename "$zonefile")
+            zonename="${region}/${city}"
+
+            tz_string=$(tail -n 1 "$zonefile" 2>/dev/null)
+            [ -n "$tz_string" ] && echo "$tz_string|$zonename" >> "$TMP_MAP"
+        done
+    done
+
+    # Step 2: Group zone names by tz_string and format to intermediate file
+    TMP_LINES="/tmp/timezone_lines.txt"
+    awk -F'|' '
+    {
+        tz = $1
+        zn = $2
+        if (tz in tzmap) {
+            tzmap[tz] = tzmap[tz] "," zn
+        } else {
+            tzmap[tz] = zn
+        }
+    }
+    END {
+        for (tz in tzmap) {
+            printf("TZSEP%sSEPZN%s\n", tz, tzmap[tz])
+        }
+    }
+    ' "$TMP_MAP" > "$TMP_LINES"
+
+    # Step 3: Convert the grouped result to JSON output
+    json_init
+    json_add_array "supported_zones"
+
+    while IFS= read -r line; do
+        timezone=$(echo "$line" | sed -n 's/^TZSEP\(.*\)SEPZN.*/\1/p')
+        zonenames=$(echo "$line" | sed -n 's/^TZSEP.*SEPZN\(.*\)/\1/p')
+        [ -n "$timezone" ] || continue
+
+        json_add_object ""
+        json_add_string "time_zone" "$timezone"
+        json_add_string "zone_name" "$zonenames"
+        json_close_object
+    done < "$TMP_LINES"
+
+    json_close_array
+    json_dump
+
+    # Cleanup
+    rm -f "$TMP_MAP" "$TMP_LINES"
+}
+