Add advantech package

Former-commit-id: 8955213aef

packages/advantech/.gitignore

@@ -0,0 +1,3 @@
+.build
+*.tgz
+bin

packages/advantech/Makefile

@@ -0,0 +1,53 @@
+MODNAME     := newt
+VERSION     := 1.12.5
+RELEASE_URL := https://github.com/fosrl/newt/releases/download/$(VERSION)
+PLATFORM    ?= v4
+
+# Map Advantech platform to newt release binary name
+arch_v4  := arm64
+arch_v4i := arm64
+arch_v3  := arm32
+arch_v2i := arm32
+
+NEWT_ARCH := $(arch_$(PLATFORM))
+ifeq ($(NEWT_ARCH),)
+$(error Unknown platform '$(PLATFORM)'. Supported: v4, v4i, v3, v2i)
+endif
+
+BINARY   := newt_linux_$(NEWT_ARCH)
+BINDIR   := bin
+OUTFILE  := $(MODNAME).$(PLATFORM).tgz
+STAGEDIR := .build/$(MODNAME)
+
+.PHONY: all clean
+
+all: $(OUTFILE)
+
+# Cache the downloaded binary in bin/ (re-download only if missing)
+$(BINDIR)/$(BINARY):
+	mkdir -p $(BINDIR)
+	@echo "Downloading $(BINARY) $(VERSION) for platform $(PLATFORM)..."
+	wget -q -O $@ "$(RELEASE_URL)/$(BINARY)" 2>/dev/null || \
+		curl -fsSL -o $@ "$(RELEASE_URL)/$(BINARY)"
+	chmod +x $@
+	@echo "Binary ready: $@"
+
+# Build the package
+$(OUTFILE): $(BINDIR)/$(BINARY) $(shell find merge -type f 2>/dev/null)
+	@rm -rf $(STAGEDIR)
+	@mkdir -p $(STAGEDIR)/bin
+	@cp $(BINDIR)/$(BINARY) $(STAGEDIR)/bin/newt
+	@chmod +x $(STAGEDIR)/bin/newt
+	@cp -r merge/. $(STAGEDIR)/
+	@chmod +x \
+		$(STAGEDIR)/etc/init \
+		$(STAGEDIR)/etc/install \
+		$(STAGEDIR)/etc/uninstall \
+		$(STAGEDIR)/www/index.cgi
+	tar -c --owner=0 --group=0 --mtime="2001-01-01 UTC" \
+		-C .build $(MODNAME) | gzip -n > $@
+	@echo "Created: $@"
+
+clean:
+	rm -rf .build $(MODNAME).*.tgz
+	@echo "Cleaned."

packages/advantech/merge/etc/defaults

@@ -0,0 +1,61 @@
+MOD_PANGOLIN_SITE_ENABLED=0
+MOD_PANGOLIN_SITE_ENDPOINT=
+MOD_PANGOLIN_SITE_ID=
+MOD_PANGOLIN_SITE_SECRET=
+
+# Core networking
+MOD_PANGOLIN_SITE_MTU=
+MOD_PANGOLIN_SITE_DNS=
+MOD_PANGOLIN_SITE_INTERFACE=
+MOD_PANGOLIN_SITE_PORT=
+MOD_PANGOLIN_SITE_UPDOWN_SCRIPT=
+MOD_PANGOLIN_SITE_PREFER_ENDPOINT=
+
+# Logging
+MOD_PANGOLIN_SITE_LOG_LEVEL=
+
+# Behavior toggles (true/false)
+MOD_PANGOLIN_SITE_DISABLE_CLIENTS=
+MOD_PANGOLIN_SITE_USE_NATIVE_INTERFACE=
+MOD_PANGOLIN_SITE_ENFORCE_HC_CERT=
+MOD_PANGOLIN_SITE_NO_CLOUD=
+
+# Timers
+MOD_PANGOLIN_SITE_PING_INTERVAL=
+MOD_PANGOLIN_SITE_PING_TIMEOUT=
+MOD_PANGOLIN_SITE_UDP_PROXY_IDLE_TIMEOUT=
+
+# Docker integration
+MOD_PANGOLIN_SITE_DOCKER_SOCKET=
+MOD_PANGOLIN_SITE_DOCKER_ENFORCE_NETWORK_VALIDATION=
+
+# Health / files
+MOD_PANGOLIN_SITE_HEALTH_FILE=
+MOD_PANGOLIN_SITE_BLUEPRINT_FILE=
+MOD_PANGOLIN_SITE_PROVISIONING_BLUEPRINT_FILE=
+MOD_PANGOLIN_SITE_CONFIG_FILE=
+
+# Provisioning
+MOD_PANGOLIN_SITE_PROVISIONING_KEY=
+MOD_PANGOLIN_SITE_NAME=
+
+# Auth daemon
+MOD_PANGOLIN_SITE_AUTH_DAEMON_ENABLED=
+MOD_PANGOLIN_SITE_AD_GENERATE_RANDOM_PASSWORD=
+MOD_PANGOLIN_SITE_AD_KEY=
+MOD_PANGOLIN_SITE_AD_PRINCIPALS_FILE=
+MOD_PANGOLIN_SITE_AD_CA_CERT_PATH=
+
+# Metrics / observability
+MOD_PANGOLIN_SITE_METRICS_PROMETHEUS_ENABLED=
+MOD_PANGOLIN_SITE_METRICS_OTLP_ENABLED=
+MOD_PANGOLIN_SITE_ADMIN_ADDR=
+MOD_PANGOLIN_SITE_REGION=
+MOD_PANGOLIN_SITE_METRICS_ASYNC_BYTES=
+MOD_PANGOLIN_SITE_PPROF_ENABLED=
+
+# mTLS
+MOD_PANGOLIN_SITE_TLS_CLIENT_CERT=
+MOD_PANGOLIN_SITE_TLS_CLIENT_KEY=
+MOD_PANGOLIN_SITE_TLS_CLIENT_CAS=
+MOD_PANGOLIN_SITE_TLS_CLIENT_CERT_PKCS12=

packages/advantech/merge/etc/description

@@ -0,0 +1,4 @@
+Pangolin Site (newt) is a WireGuard-based tunnel client that connects this router to a
+Pangolin server, enabling secure remote access to local resources without opening
+firewall ports. Configure the server endpoint, ID, and secret via the web
+interface to establish the tunnel automatically on startup.

packages/advantech/merge/etc/init

@@ -0,0 +1,124 @@
+#!/bin/sh
+
+MODNAME=newt
+PIDFILE=/tmp/newt.pid
+LOGFILE=/tmp/newt.log
+
+set_setting_raw() {
+    key="$1"
+    value="$2"
+    [ -f "/opt/$MODNAME/etc/settings" ] || cp "/opt/$MODNAME/etc/defaults" "/opt/$MODNAME/etc/settings" 2>/dev/null
+    awk -v k="$key" -v v="$value" '
+        BEGIN { done=0 }
+        index($0, k "=") == 1 { print k "=" v; done=1; next }
+        { print }
+        END { if (!done) print k "=" v }
+    ' "/opt/$MODNAME/etc/settings" > "/tmp/${MODNAME}.settings.tmp" && mv "/tmp/${MODNAME}.settings.tmp" "/opt/$MODNAME/etc/settings"
+}
+
+/usr/bin/logger -t $MODNAME "DEBUG: $0 $@"
+
+case "$1" in
+    start)
+        . /opt/$MODNAME/etc/settings
+        if [ "$MOD_PANGOLIN_SITE_ENABLED" != "1" ]; then
+            echo "$MODNAME is disabled in settings, skipping start"
+            exit 0
+        fi
+        if [ -f "$PIDFILE" ] && kill -0 "$(cat "$PIDFILE" 2>/dev/null)" 2>/dev/null; then
+            echo "$MODNAME is already running (PID: $(cat "$PIDFILE"))"
+            exit 0
+        fi
+
+        # Starting newt implies enable at boot.
+        set_setting_raw "MOD_PANGOLIN_SITE_ENABLED" "1"
+
+        # Map module settings to Newt environment variables.
+        [ -n "$MOD_PANGOLIN_SITE_ENDPOINT" ] && export PANGOLIN_ENDPOINT="$MOD_PANGOLIN_SITE_ENDPOINT"
+        [ -n "$MOD_PANGOLIN_SITE_ID" ] && export NEWT_ID="$MOD_PANGOLIN_SITE_ID"
+        [ -n "$MOD_PANGOLIN_SITE_SECRET" ] && export NEWT_SECRET="$MOD_PANGOLIN_SITE_SECRET"
+        [ -n "$MOD_PANGOLIN_SITE_MTU" ] && export MTU="$MOD_PANGOLIN_SITE_MTU"
+        [ -n "$MOD_PANGOLIN_SITE_DNS" ] && export DNS="$MOD_PANGOLIN_SITE_DNS"
+        [ -n "$MOD_PANGOLIN_SITE_LOG_LEVEL" ] && export LOG_LEVEL="$MOD_PANGOLIN_SITE_LOG_LEVEL"
+        [ -n "$MOD_PANGOLIN_SITE_UPDOWN_SCRIPT" ] && export UPDOWN_SCRIPT="$MOD_PANGOLIN_SITE_UPDOWN_SCRIPT"
+        [ -n "$MOD_PANGOLIN_SITE_INTERFACE" ] && export INTERFACE="$MOD_PANGOLIN_SITE_INTERFACE"
+        [ -n "$MOD_PANGOLIN_SITE_PORT" ] && export PORT="$MOD_PANGOLIN_SITE_PORT"
+        [ -n "$MOD_PANGOLIN_SITE_DISABLE_CLIENTS" ] && export DISABLE_CLIENTS="$MOD_PANGOLIN_SITE_DISABLE_CLIENTS"
+        [ -n "$MOD_PANGOLIN_SITE_USE_NATIVE_INTERFACE" ] && export USE_NATIVE_INTERFACE="$MOD_PANGOLIN_SITE_USE_NATIVE_INTERFACE"
+        [ -n "$MOD_PANGOLIN_SITE_ENFORCE_HC_CERT" ] && export ENFORCE_HC_CERT="$MOD_PANGOLIN_SITE_ENFORCE_HC_CERT"
+        [ -n "$MOD_PANGOLIN_SITE_DOCKER_SOCKET" ] && export DOCKER_SOCKET="$MOD_PANGOLIN_SITE_DOCKER_SOCKET"
+        [ -n "$MOD_PANGOLIN_SITE_PING_INTERVAL" ] && export PING_INTERVAL="$MOD_PANGOLIN_SITE_PING_INTERVAL"
+        [ -n "$MOD_PANGOLIN_SITE_PING_TIMEOUT" ] && export PING_TIMEOUT="$MOD_PANGOLIN_SITE_PING_TIMEOUT"
+        [ -n "$MOD_PANGOLIN_SITE_UDP_PROXY_IDLE_TIMEOUT" ] && export NEWT_UDP_PROXY_IDLE_TIMEOUT="$MOD_PANGOLIN_SITE_UDP_PROXY_IDLE_TIMEOUT"
+        [ -n "$MOD_PANGOLIN_SITE_DOCKER_ENFORCE_NETWORK_VALIDATION" ] && export DOCKER_ENFORCE_NETWORK_VALIDATION="$MOD_PANGOLIN_SITE_DOCKER_ENFORCE_NETWORK_VALIDATION"
+        [ -n "$MOD_PANGOLIN_SITE_HEALTH_FILE" ] && export HEALTH_FILE="$MOD_PANGOLIN_SITE_HEALTH_FILE"
+        [ -n "$MOD_PANGOLIN_SITE_AUTH_DAEMON_ENABLED" ] && export AUTH_DAEMON_ENABLED="$MOD_PANGOLIN_SITE_AUTH_DAEMON_ENABLED"
+        [ -n "$MOD_PANGOLIN_SITE_AD_GENERATE_RANDOM_PASSWORD" ] && export AD_GENERATE_RANDOM_PASSWORD="$MOD_PANGOLIN_SITE_AD_GENERATE_RANDOM_PASSWORD"
+        [ -n "$MOD_PANGOLIN_SITE_AD_KEY" ] && export AD_KEY="$MOD_PANGOLIN_SITE_AD_KEY"
+        [ -n "$MOD_PANGOLIN_SITE_AD_PRINCIPALS_FILE" ] && export AD_PRINCIPALS_FILE="$MOD_PANGOLIN_SITE_AD_PRINCIPALS_FILE"
+        [ -n "$MOD_PANGOLIN_SITE_AD_CA_CERT_PATH" ] && export AD_CA_CERT_PATH="$MOD_PANGOLIN_SITE_AD_CA_CERT_PATH"
+        [ -n "$MOD_PANGOLIN_SITE_METRICS_PROMETHEUS_ENABLED" ] && export NEWT_METRICS_PROMETHEUS_ENABLED="$MOD_PANGOLIN_SITE_METRICS_PROMETHEUS_ENABLED"
+        [ -n "$MOD_PANGOLIN_SITE_METRICS_OTLP_ENABLED" ] && export NEWT_METRICS_OTLP_ENABLED="$MOD_PANGOLIN_SITE_METRICS_OTLP_ENABLED"
+        [ -n "$MOD_PANGOLIN_SITE_ADMIN_ADDR" ] && export NEWT_ADMIN_ADDR="$MOD_PANGOLIN_SITE_ADMIN_ADDR"
+        [ -n "$MOD_PANGOLIN_SITE_REGION" ] && export NEWT_REGION="$MOD_PANGOLIN_SITE_REGION"
+        [ -n "$MOD_PANGOLIN_SITE_METRICS_ASYNC_BYTES" ] && export NEWT_METRICS_ASYNC_BYTES="$MOD_PANGOLIN_SITE_METRICS_ASYNC_BYTES"
+        [ -n "$MOD_PANGOLIN_SITE_PPROF_ENABLED" ] && export NEWT_PPROF_ENABLED="$MOD_PANGOLIN_SITE_PPROF_ENABLED"
+        [ -n "$MOD_PANGOLIN_SITE_TLS_CLIENT_CERT" ] && export TLS_CLIENT_CERT="$MOD_PANGOLIN_SITE_TLS_CLIENT_CERT"
+        [ -n "$MOD_PANGOLIN_SITE_TLS_CLIENT_KEY" ] && export TLS_CLIENT_KEY="$MOD_PANGOLIN_SITE_TLS_CLIENT_KEY"
+        [ -n "$MOD_PANGOLIN_SITE_TLS_CLIENT_CAS" ] && export TLS_CLIENT_CAS="$MOD_PANGOLIN_SITE_TLS_CLIENT_CAS"
+        [ -n "$MOD_PANGOLIN_SITE_TLS_CLIENT_CERT_PKCS12" ] && export TLS_CLIENT_CERT_PKCS12="$MOD_PANGOLIN_SITE_TLS_CLIENT_CERT_PKCS12"
+        [ -n "$MOD_PANGOLIN_SITE_BLUEPRINT_FILE" ] && export BLUEPRINT_FILE="$MOD_PANGOLIN_SITE_BLUEPRINT_FILE"
+        [ -n "$MOD_PANGOLIN_SITE_PROVISIONING_BLUEPRINT_FILE" ] && export PROVISIONING_BLUEPRINT_FILE="$MOD_PANGOLIN_SITE_PROVISIONING_BLUEPRINT_FILE"
+        [ -n "$MOD_PANGOLIN_SITE_NO_CLOUD" ] && export NO_CLOUD="$MOD_PANGOLIN_SITE_NO_CLOUD"
+        [ -n "$MOD_PANGOLIN_SITE_PROVISIONING_KEY" ] && export NEWT_PROVISIONING_KEY="$MOD_PANGOLIN_SITE_PROVISIONING_KEY"
+        [ -n "$MOD_PANGOLIN_SITE_NAME" ] && export NEWT_NAME="$MOD_PANGOLIN_SITE_NAME"
+        [ -n "$MOD_PANGOLIN_SITE_CONFIG_FILE" ] && export CONFIG_FILE="$MOD_PANGOLIN_SITE_CONFIG_FILE"
+
+        export NEWT_SYSTEM_SUBSTRATE="ADVANTECH_ROUTER_APP"
+        export NEWT_PID_FILE="$PIDFILE"
+
+        echo "Starting $MODNAME..."
+        if [ -n "$MOD_PANGOLIN_SITE_PREFER_ENDPOINT" ]; then
+            /opt/$MODNAME/bin/newt --prefer-endpoint "$MOD_PANGOLIN_SITE_PREFER_ENDPOINT" >> "$LOGFILE" 2>&1 &
+        else
+            /opt/$MODNAME/bin/newt >> "$LOGFILE" 2>&1 &
+        fi
+        echo $! > "$PIDFILE"
+        echo "Started $MODNAME (PID: $(cat "$PIDFILE"))"
+        exit 0
+        ;;
+    stop)
+        echo "Stopping $MODNAME..."
+        if [ -f "$PIDFILE" ]; then
+            kill "$(cat "$PIDFILE" 2>/dev/null)" 2>/dev/null
+            rm -f "$PIDFILE"
+        fi
+        killall newt 2>/dev/null
+        # Stopping newt implies disable at boot.
+        set_setting_raw "MOD_PANGOLIN_SITE_ENABLED" "0"
+        echo "Stopped $MODNAME"
+        exit 0
+        ;;
+    restart)
+        $0 stop
+        sleep 1
+        # Restart should remain enabled after reboot.
+        set_setting_raw "MOD_PANGOLIN_SITE_ENABLED" "1"
+        $0 start
+        ;;
+    status)
+        if [ -f "$PIDFILE" ] && kill -0 "$(cat "$PIDFILE" 2>/dev/null)" 2>/dev/null; then
+            echo "$MODNAME is running (PID: $(cat "$PIDFILE"))"
+            exit 0
+        else
+            echo "$MODNAME is not running"
+            exit 1
+        fi
+        ;;
+    defaults)
+        cp /opt/$MODNAME/etc/defaults /opt/$MODNAME/etc/settings 2>/dev/null
+        ;;
+    *)
+        echo "Usage: $0 {start|stop|restart|status|defaults}"
+        exit 1
+esac

packages/advantech/merge/etc/install

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+MODNAME=newt
+
+# Ensure scripts are executable
+chmod +x /opt/$MODNAME/etc/init
+chmod +x /opt/$MODNAME/etc/install
+chmod +x /opt/$MODNAME/etc/uninstall
+chmod +x /opt/$MODNAME/bin/newt
+chmod +x /opt/$MODNAME/www/index.cgi
+
+# Secure the web interface with router authentication
+ln -sf /etc/htpasswd /opt/$MODNAME/www/.htpasswd
+
+exit 0

packages/advantech/merge/etc/name

@@ -0,0 +1 @@
+Pangolin Site

packages/advantech/merge/etc/summary

@@ -0,0 +1 @@
+Tunnel client for Pangolin secure remote access.

packages/advantech/merge/etc/uninstall

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+MODNAME=newt
+
+rm -f /opt/$MODNAME/www/.htpasswd
+rm -f /tmp/newt.pid
+rm -f /tmp/newt.log
+
+exit 0

packages/advantech/merge/etc/version

@@ -0,0 +1 @@
+1.12.5

packages/advantech/merge/www/index.cgi

@@ -0,0 +1,282 @@
+#!/bin/sh
+
+MODNAME=newt
+SETTINGS=/opt/$MODNAME/etc/settings
+LOGFILE=/tmp/newt.log
+PIDFILE=/tmp/newt.pid
+
+# Escape special HTML characters
+htmlesc() {
+    printf '%s' "$1" | sed \
+        -e 's/&/\&/g' \
+        -e 's/</\&lt;/g' \
+        -e 's/>/\&gt;/g' \
+        -e 's/"/\&quot;/g'
+}
+
+# Decode URL-encoded form values (handles common chars in endpoints/ids/secrets)
+urldecode() {
+    printf '%s' "$1" | sed \
+        -e 's/+/ /g' \
+        -e 's/%3[Aa]/:/g' -e 's/%3[aa]/:/g' \
+        -e 's/%2[Ff]/\//g' -e 's/%2[ff]/\//g' \
+        -e 's/%40/@/g' \
+        -e 's/%2[Ee]/./g' \
+        -e 's/%2[Dd]/-/g' \
+        -e 's/%5[Ff]/_/g' \
+        -e 's/%3[Dd]/=/g' \
+        -e 's/%3[Ff]/?/g' \
+        -e 's/%23/#/g' \
+        -e 's/%25/%/g'
+}
+
+# Extract a named field from URL-encoded POST data (awk splits on & without tr)
+get_field() {
+    printf '%s' "$2" | awk -v f="${1}=" 'BEGIN{RS="&"} index($0,f)==1 {print substr($0,length(f)+1); exit}'
+}
+
+# Check whether newt process is alive
+is_running() {
+    [ -f "$PIDFILE" ] && kill -0 "$(cat "$PIDFILE" 2>/dev/null)" 2>/dev/null
+}
+
+ensure_settings_file() {
+  [ -f "$SETTINGS" ] && return
+  if [ -f "/opt/$MODNAME/etc/defaults" ]; then
+    cp "/opt/$MODNAME/etc/defaults" "$SETTINGS" 2>/dev/null
+  else
+    printf 'MOD_PANGOLIN_SITE_ENABLED=0\n' > "$SETTINGS"
+  fi
+}
+
+set_setting_raw() {
+  key="$1"
+  value="$2"
+  ensure_settings_file
+  awk -v k="$key" -v v="$value" '
+    BEGIN { done=0 }
+    index($0, k "=") == 1 { print k "=" v; done=1; next }
+    { print }
+    END { if (!done) print k "=" v }
+  ' "$SETTINGS" > "$SETTINGS.tmp" && mv "$SETTINGS.tmp" "$SETTINGS"
+}
+
+quote_sh_value() {
+  printf '%s' "$1" | sed -e 's/\\/\\\\/g' -e 's/"/\\"/g'
+}
+
+# ── Read POST body ──────────────────────────────────────────────────────────
+POST_DATA=""
+if [ "$REQUEST_METHOD" = "POST" ] && [ -n "$CONTENT_LENGTH" ] && [ "$CONTENT_LENGTH" -gt 0 ] 2>/dev/null; then
+    POST_DATA=$(dd bs="$CONTENT_LENGTH" count=1 2>/dev/null)
+fi
+
+# ── Load current settings ───────────────────────────────────────────────────
+MOD_PANGOLIN_SITE_ENABLED=0
+MOD_PANGOLIN_SITE_ENDPOINT=""
+MOD_PANGOLIN_SITE_ID=""
+MOD_PANGOLIN_SITE_SECRET=""
+[ -f "$SETTINGS" ] && . "$SETTINGS"
+
+# ── Handle actions ──────────────────────────────────────────────────────────
+if [ -n "$POST_DATA" ]; then
+    ACTION=$(get_field "action" "$POST_DATA")
+    case "$ACTION" in
+        save)
+            EP=$(urldecode "$(get_field "endpoint" "$POST_DATA")")
+            ID=$(urldecode "$(get_field "id"       "$POST_DATA")")
+            SEC=$(urldecode "$(get_field "secret"  "$POST_DATA")")
+        set_setting_raw "MOD_PANGOLIN_SITE_ENDPOINT" "\"$(quote_sh_value "$EP")\""
+        set_setting_raw "MOD_PANGOLIN_SITE_ID" "\"$(quote_sh_value "$ID")\""
+        set_setting_raw "MOD_PANGOLIN_SITE_SECRET" "\"$(quote_sh_value "$SEC")\""
+            ;;
+        start)
+        set_setting_raw "MOD_PANGOLIN_SITE_ENABLED" "1"
+            /opt/$MODNAME/etc/init start >/dev/null 2>&1
+            ;;
+        stop)
+            /opt/$MODNAME/etc/init stop >/dev/null 2>&1
+        set_setting_raw "MOD_PANGOLIN_SITE_ENABLED" "0"
+            ;;
+        restart)
+        set_setting_raw "MOD_PANGOLIN_SITE_ENABLED" "1"
+            /opt/$MODNAME/etc/init restart >/dev/null 2>&1
+            ;;
+        clearlog)
+            printf '' > "$LOGFILE"
+            ;;
+    esac
+fi
+
+# Reload settings after actions.
+MOD_PANGOLIN_SITE_ENABLED=0
+MOD_PANGOLIN_SITE_ENDPOINT=""
+MOD_PANGOLIN_SITE_ID=""
+MOD_PANGOLIN_SITE_SECRET=""
+[ -f "$SETTINGS" ] && . "$SETTINGS"
+
+# ── Status ──────────────────────────────────────────────────────────────────
+if is_running; then
+    STATUS_TEXT="Running"
+    STATUS_CLASS="running"
+    DISABLED="disabled"
+  SETTINGS_HINT='<div class="notice">Stop Newt first to edit settings.</div>'
+else
+    STATUS_TEXT="Stopped"
+    STATUS_CLASS="stopped"
+    DISABLED=""
+    SETTINGS_HINT=""
+fi
+
+EP_ESC=$(htmlesc  "$MOD_PANGOLIN_SITE_ENDPOINT")
+ID_ESC=$(htmlesc  "$MOD_PANGOLIN_SITE_ID")
+SEC_ESC=$(htmlesc "$MOD_PANGOLIN_SITE_SECRET")
+EP_INPUT_ESC="$EP_ESC"
+[ -z "$MOD_PANGOLIN_SITE_ENDPOINT" ] && EP_INPUT_ESC="https://app.pangolin.net"
+
+# ── Log (escape HTML and dollar signs to prevent shell expansion in heredoc) ─
+LOG_HTML=""
+if [ -f "$LOGFILE" ]; then
+    LOG_HTML=$(tail -100 "$LOGFILE" 2>/dev/null | sed \
+        -e 's/&/\&amp;/g' \
+        -e 's/</\&lt;/g'  \
+        -e 's/>/\&gt;/g'  \
+        -e 's/\$/\&#36;/g')
+fi
+
+# ── Output ──────────────────────────────────────────────────────────────────
+printf 'Content-type: text/html\r\n\r\n'
+
+# Static head — split around the conditional refresh meta tag
+cat << 'HEAD_START'
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="UTF-8">
+HEAD_START
+
+# Only auto-refresh while newt is running (avoids wiping settings form mid-edit)
+[ "$STATUS_CLASS" = "running" ] && printf '<meta http-equiv="refresh" content="10">\n'
+
+cat << 'STATIC_HEAD'
+<title>Pangolin Site</title>
+<style>
+*{box-sizing:border-box}
+body{margin:0;padding:8px;border-top:3px solid #79BD28;background:#fff;color:#000}
+body,table,tr,td,a,input,select,textarea,button{font-family:Verdana,Arial,Helvetica,sans-serif;font-size:12px}
+a{color:#004280;text-decoration:none}
+a:hover{text-decoration:underline}
+.topline{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;margin-bottom:6px}
+.app-title{background:#004280;color:#fff;font-weight:bold;padding:6px 8px;border:1px solid #00315f;border-bottom:none}
+.window{background:#f4f4f4;border:2px solid #004280;padding:0}
+.section{border-top:1px solid #9fb7d5}
+.section:first-child{border-top:none}
+.section-head{background:#c0e0ff;color:#000;font-weight:bold;padding:5px 8px;border-bottom:1px solid #9fb7d5;display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}
+.section-body{padding:10px 8px}
+.badge{display:inline-block;padding:2px 10px;border-radius:2px;color:#fff;font-weight:bold;line-height:1.4}
+.running{background:#008000}
+.stopped{background:#800000}
+.row{display:flex;align-items:center;gap:8px;margin:6px 0}
+.row label{width:90px;font-weight:bold}
+.row input{width:360px;max-width:100%;padding:2px 4px;border:1px solid #7f9db9;background:#fff;height:23px}
+.btn{height:24px;padding:0 10px;border:1px solid #7f9db9;background:#efefef;color:#000;cursor:pointer}
+.btn:disabled{color:#777;background:#e5e5e5}
+.btn + .btn{margin-left:6px}
+.btn-start{border-color:#2d7a2d;background:#dff0df}
+.btn-stop{border-color:#8a2c2c;background:#f7dddd}
+.btn-restart{border-color:#9a6a1f;background:#f7ecd8}
+.btn-save{border-color:#2e5f92;background:#dce9f8}
+.hint{color:#808080;font-weight:normal}
+.notice{margin:0 0 10px 0;color:#ff0000;font-style:italic}
+.log{background:#fff;border:1px solid #7f9db9;color:#000;font-family:monospace;font-size:12px;line-height:1.35;padding:6px;height:300px;overflow-y:auto;white-space:pre-wrap;word-break:break-word}
+</style>
+</head>
+<body>
+<div class="topline">
+<a href="/">&laquo; Back to Router</a>
+</div>
+<div class="app-title">Router Apps - Pangolin Site</div>
+<div class="window">
+STATIC_HEAD
+
+# Status card (double-quoted heredoc — variables expand)
+cat << STATUS_CARD
+<div class="section">
+<div class="section-head">Status</div>
+<div class="section-body">
+<div><span class="badge ${STATUS_CLASS}">${STATUS_TEXT}</span></div>
+<div style="margin-top:8px">
+<form method="post" style="display:inline">
+  <input type="hidden" name="action" value="start">
+  <button class="btn btn-start" type="submit">Start</button>
+</form>
+<form method="post" style="display:inline">
+  <input type="hidden" name="action" value="stop">
+  <button class="btn btn-stop" type="submit">Stop</button>
+</form>
+<form method="post" style="display:inline">
+  <input type="hidden" name="action" value="restart">
+  <button class="btn btn-restart" type="submit">Restart</button>
+</form>
+</div>
+</div>
+</div>
+STATUS_CARD
+
+# Settings card
+cat << SETTINGS_CARD
+<div class="section">
+<div class="section-head">Settings</div>
+<div class="section-body">
+${SETTINGS_HINT}<form method="post">
+  <input type="hidden" name="action" value="save">
+  <div class="row">
+    <label>Endpoint</label>
+    <input type="text" name="endpoint" value="${EP_INPUT_ESC}" ${DISABLED}>
+  </div>
+  <div class="row">
+    <label>ID</label>
+    <input type="text" name="id" value="${ID_ESC}" ${DISABLED}>
+  </div>
+  <div class="row">
+    <label>Secret</label>
+    <input type="password" name="secret" value="${SEC_ESC}" ${DISABLED}>
+  </div>
+  <div style="margin-top:12px">
+    <button class="btn btn-save" type="submit" ${DISABLED}>Save</button>
+  </div>
+</form>
+</div>
+</div>
+SETTINGS_CARD
+
+# Log card header
+cat << 'LOG_HEADER'
+<div class="section">
+<div class="section-head">
+<span>Log <span class="hint">(last 100 lines, auto-refreshes every 10s while running)</span></span>
+<span style="display:inline-flex;gap:6px">
+<form method="post" style="margin:0">
+  <input type="hidden" name="action" value="clearlog">
+  <button class="btn" type="submit">Clear Log</button>
+</form>
+<form method="get" style="margin:0">
+  <button class="btn" type="submit">Refresh</button>
+</form>
+</span>
+</div>
+<div class="section-body">
+<div class="log">
+LOG_HEADER
+
+# Log content — printed with printf to prevent any shell expansion
+printf '%s' "$LOG_HTML"
+
+# Close tags (static)
+cat << 'STATIC_FOOTER'
+</div>
+</div>
+</div>
+</body>
+</html>
+STATIC_FOOTER