From 3d327216834a8a71ff271913cd4ac0818bdcc914 Mon Sep 17 00:00:00 2001
From: Gergely Koloszar <gergely.koloszar@gmail.com>
Date: Thu, 16 Oct 2025 20:50:42 +0200
Subject: [PATCH 1/4] Add availability checker for remote services based on
 ping and timeout

---
 dzgui.sh | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/dzgui.sh b/dzgui.sh
index ae93854..3f02dca 100755
--- a/dzgui.sh
+++ b/dzgui.sh
@@ -495,6 +495,22 @@ stale_symlinks(){
         unlink "$l"
     done
 }
+
+check_availability() {
+    if [[ -z $1 ]]; then
+        return 1
+    fi
+    local url=$1
+    local timeout_sec="3"
+    if [[ $2 ]]; then
+        timeout_sec=$2
+    fi
+    if ! ping -w "$timeout_sec" "$url"; then
+        logger WARN "Failed to reach $url, service may be down."
+        return 1
+    fi
+}
+
 local_latlon(){
     if [[ -z $(command -v dig) ]]; then
         local local_ip=$(curl -Ls "https://ipecho.net/plain")

From a7c647aa6bd58254c478e165768a0e08e749af59 Mon Sep 17 00:00:00 2001
From: Gergely Koloszar <gergely.koloszar@gmail.com>
Date: Thu, 16 Oct 2025 20:51:46 +0200
Subject: [PATCH 2/4] Add availability checks for local_latlon function

---
 dzgui.sh | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/dzgui.sh b/dzgui.sh
index 3f02dca..b52012d 100755
--- a/dzgui.sh
+++ b/dzgui.sh
@@ -513,19 +513,30 @@ check_availability() {
 
 local_latlon(){
     if [[ -z $(command -v dig) ]]; then
-        local local_ip=$(curl -Ls "https://ipecho.net/plain")
+        local url_ipecho="https://ipecho.net/plain"
+        if ! check_availability "ipecho.net"; then
+            logger WARN "Failed to get external ip address, ipecho.net service may be down."
+            return 1
+        fi
+        local local_ip=$(curl -Ls "$url_ipecho")
     else
+        # todo : implement checking remote
         local local_ip=$(dig -4 +short myip.opendns.com @resolver1.opendns.com)
     fi
-    local url="http://ip-api.com/json/$local_ip"
-    local res=$(curl -Ls "$url" | jq -r '"\(.lat)\n\(.lon)"')
+    local url_ip_api="http://ip-api.com/json/$local_ip"
+    if ! check_availability "ip-api.com"; then
+        logger WARN "Failed to get local coordinates, ip-api.com service may be down."
+        return 1
+    fi
+    local res=$(curl -Ls "$url_ip_api" | jq -r '"\(.lat)\n\(.lon)"')
     if [[ -z "$res" ]]; then
         logger WARN "Failed to get local coordinates"
         return 1
     fi
     echo "$res" > "$coords_file"
 }
-lock(){
+
+lock
     [[ ! -f $lock_file ]] && touch $lock_file
     local pid=$(cat $lock_file)
     ps -p $pid -o pid= >/dev/null 2>&1

From 0ad6366f0a63a40cbcac290992bfd2dbff9ce1ab Mon Sep 17 00:00:00 2001
From: Gergely Koloszar <gergely.koloszar@gmail.com>
Date: Thu, 16 Oct 2025 20:53:14 +0200
Subject: [PATCH 3/4] Fix unintended deletion

---
 dzgui.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dzgui.sh b/dzgui.sh
index b52012d..7850a4f 100755
--- a/dzgui.sh
+++ b/dzgui.sh
@@ -536,7 +536,7 @@ local_latlon(){
     echo "$res" > "$coords_file"
 }
 
-lock
+lock(){
     [[ ! -f $lock_file ]] && touch $lock_file
     local pid=$(cat $lock_file)
     ps -p $pid -o pid= >/dev/null 2>&1

From 5654b327d42fc6d8c9e6b65e8106930c26677d06 Mon Sep 17 00:00:00 2001
From: aclist <92275929+aclist@users.noreply.github.com>
Date: Fri, 17 Oct 2025 04:20:13 +0900
Subject: [PATCH 4/4] fix: early abort if local coords are missing

---
 helpers/funcs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/helpers/funcs b/helpers/funcs
index c747c82..3f0b44e 100755
--- a/helpers/funcs
+++ b/helpers/funcs
@@ -425,6 +425,10 @@ local_latlon(){
 get_dist(){
     shift
     local given_ip="$1"
+    if [[ ! -f $_cache_coords ]]; then
+        printf "Unknown"
+        return
+    fi
     readarray -t coords < "$_cache_coords"
     readarray -t n < <(<<< "$given_ip" awk 'BEGIN{RS="."}{$1=$1}1')