feat: Add OTA auto-update and guest IPv6 via Yggdrasil

OTA: build.sh writes version/profile to firmware, generates manifest.json with SHA256 per device. parahub-autoupdate script runs nightly at 3am, fetches manifest (Yggdrasil first), verifies checksum, runs sysupgrade. sysupgrade.conf preserves /etc/parahub/, yggdrasil.conf, dropbear keys. Guest IPv6: Yggdrasil 300::/64 subnet assigned to guest via SLAAC. Separate yggdrasil firewall zone (5 zones total) with guest→yggdrasil forwarding. IPv6 exempt from tc shaping — full speed to Parahub services. IPv6 to WAN blocked. Heartbeat now reads version from file, not hardcoded. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-06 08:09:27 +00:00
parent 6d6cffa42c
commit c5b9229ad0
6 changed files with 260 additions and 13 deletions
--- a/files/etc/sysupgrade.conf
+++ b/files/etc/sysupgrade.conf
@@ -0,0 +1,3 @@
+/etc/parahub/
+/etc/yggdrasil.conf
+/etc/dropbear/
--- a/files/etc/uci-defaults/99-parahub-mesh
+++ b/files/etc/uci-defaults/99-parahub-mesh
@@ -382,13 +382,12 @@ set firewall.@zone[-1].output='ACCEPT'
 set firewall.@zone[-1].forward='ACCEPT'
 add_list firewall.@zone[-1].network='private'

-# --- Zone: guest (IPv4 only — IPv6 blocked) ---
+# --- Zone: guest (dual-stack — IPv6 for Yggdrasil services) ---
 add firewall zone
 set firewall.@zone[-1].name='guest'
 set firewall.@zone[-1].input='REJECT'
 set firewall.@zone[-1].output='ACCEPT'
 set firewall.@zone[-1].forward='REJECT'
-set firewall.@zone[-1].family='ipv4'
 add_list firewall.@zone[-1].network='guest'

 # --- Zone: wan ---
@@ -430,14 +429,13 @@ set firewall.@rule[-1].dest_port='67'
 set firewall.@rule[-1].target='ACCEPT'
 set firewall.@rule[-1].family='ipv4'

-# --- Rule: guest DNS to router only (hijacked to DoH) ---
+# --- Rule: guest DNS to router (hijacked to DoH, dual-stack) ---
 add firewall rule
 set firewall.@rule[-1].name='Guest DNS'
 set firewall.@rule[-1].src='guest'
 set firewall.@rule[-1].proto='tcpudp'
 set firewall.@rule[-1].dest_port='53'
 set firewall.@rule[-1].target='ACCEPT'
-set firewall.@rule[-1].family='ipv4'

 # --- Rule: block guest → lan (isolation) ---
 add firewall rule
@@ -447,10 +445,20 @@ set firewall.@rule[-1].dest='lan'
 set firewall.@rule[-1].proto='all'
 set firewall.@rule[-1].target='REJECT'

-# --- Rule: block ALL IPv6 from guest (leak prevention) ---
+# --- Rule: allow guest DHCPv6/RA (IPv6 address assignment) ---
 add firewall rule
-set firewall.@rule[-1].name='Block guest IPv6'
+set firewall.@rule[-1].name='Guest RA'
 set firewall.@rule[-1].src='guest'
+set firewall.@rule[-1].proto='icmp'
+set firewall.@rule[-1].family='ipv6'
+set firewall.@rule[-1].icmp_type='router-solicitation'
+set firewall.@rule[-1].target='ACCEPT'
+
+# --- Rule: block guest IPv6 to WAN (only Yggdrasil allowed via forwarding) ---
+add firewall rule
+set firewall.@rule[-1].name='Block guest IPv6 WAN'
+set firewall.@rule[-1].src='guest'
+set firewall.@rule[-1].dest='wan'
 set firewall.@rule[-1].proto='all'
 set firewall.@rule[-1].family='ipv6'
 set firewall.@rule[-1].target='REJECT'
@@ -608,8 +616,44 @@ set network.yggdrasil.proto='none'
 YGG_EOF
    uci commit network

-    # Add yggdrasil to LAN zone (mesh nodes trust each other)
-    uci add_list firewall.@zone[0].network='yggdrasil'
+    # Yggdrasil firewall zone (separate from LAN — allows guest→yggdrasil forwarding)
+    uci batch <<-YGG_FW_EOF
+add firewall zone
+set firewall.@zone[-1].name='yggdrasil'
+set firewall.@zone[-1].input='REJECT'
+set firewall.@zone[-1].output='ACCEPT'
+set firewall.@zone[-1].forward='REJECT'
+add_list firewall.@zone[-1].network='yggdrasil'
+
+# Allow GRE6 protocol input (tunnel endpoint)
+add firewall rule
+set firewall.@rule[-1].name='Allow GRE6 input'
+set firewall.@rule[-1].src='yggdrasil'
+set firewall.@rule[-1].proto='47'
+set firewall.@rule[-1].target='ACCEPT'
+
+# Allow ICMPv6 on Yggdrasil
+add firewall rule
+set firewall.@rule[-1].name='Allow ICMPv6 Ygg'
+set firewall.@rule[-1].src='yggdrasil'
+set firewall.@rule[-1].proto='icmp'
+set firewall.@rule[-1].family='ipv6'
+set firewall.@rule[-1].target='ACCEPT'
+
+# Forwardings: LAN ↔ Yggdrasil (owner full access)
+add firewall forwarding
+set firewall.@forwarding[-1].src='lan'
+set firewall.@forwarding[-1].dest='yggdrasil'
+
+add firewall forwarding
+set firewall.@forwarding[-1].src='yggdrasil'
+set firewall.@forwarding[-1].dest='lan'
+
+# Forwarding: guest → yggdrasil (IPv6 Parahub services at full speed)
+add firewall forwarding
+set firewall.@forwarding[-1].src='guest'
+set firewall.@forwarding[-1].dest='yggdrasil'
+YGG_FW_EOF
    uci commit firewall

    # Enable yggdrasil service
@@ -623,17 +667,50 @@ else
 fi

 # ============================================================================
-# 12. HEARTBEAT (phone-home to Parahub cloud)
+# 12. GUEST IPv6 VIA YGGDRASIL (Bumblebee only — full-speed Parahub access)
+# ============================================================================
+
+if [ "$ROLE" != "bee" ]; then
+    # Extract Yggdrasil 300::/64 subnet for guest SLAAC
+    YGG_SUBNET=$(yggdrasil -subnet -useconffile /etc/yggdrasil.conf 2>/dev/null)
+    # YGG_SUBNET format: 300:xxxx:xxxx:xxxx::/64
+    YGG_SUBNET_PREFIX="${YGG_SUBNET%%::*}"  # 300:xxxx:xxxx:xxxx
+
+    if [ -n "$YGG_SUBNET_PREFIX" ]; then
+        # Assign IPv6 from Yggdrasil subnet to guest interface
+        uci set network.guest.ip6addr="${YGG_SUBNET_PREFIX}::1/64"
+        uci commit network
+
+        # Configure RA/SLAAC for guest (odhcpd)
+        uci batch <<-GUEST6_EOF
+set dhcp.guest.ra='server'
+set dhcp.guest.dhcpv6='disabled'
+set dhcp.guest.ra_management='0'
+set dhcp.guest.ra_default='1'
+set dhcp.guest.ra_slaac='1'
+GUEST6_EOF
+        uci commit dhcp
+
+        logger -t parahub-mesh "Guest IPv6: ${YGG_SUBNET_PREFIX}::1/64 (SLAAC)"
+    else
+        logger -t parahub-mesh "Warning: Could not extract Yggdrasil subnet, guest IPv6 disabled"
+    fi
+fi
+
+# ============================================================================
+# 13. HEARTBEAT (phone-home to Parahub cloud)
 # ============================================================================

 chmod +x /usr/bin/parahub-heartbeat
+chmod +x /usr/bin/parahub-autoupdate

-# Cron: every 5 minutes
+# Cron: heartbeat every 5 minutes + OTA update nightly at 3am
 echo "*/5 * * * * /usr/bin/parahub-heartbeat" >> /etc/crontabs/root
+echo "0 3 * * * /usr/bin/parahub-autoupdate" >> /etc/crontabs/root
 /etc/init.d/cron enable

 # ============================================================================
-# 13. FINAL
+# 14. FINAL
 # ============================================================================

 # Log completion
@@ -651,6 +728,7 @@ else
    logger -t parahub-mesh "Yggdrasil: ${YGG_ADDR}"
    logger -t parahub-mesh "GRE tunnel: 172.16.0.2 → VPS gateway (Mullvad Portugal)"
    logger -t parahub-mesh "Kill switch: guest→vpn_tunnel only (no wan)"
+    logger -t parahub-mesh "Guest IPv6: Yggdrasil SLAAC (full speed, firewall restricted)"
    logger -t parahub-mesh "bat0 gw_mode: server (gateway for Bee nodes)"
 fi

--- a/files/usr/bin/parahub-autoupdate
+++ b/files/usr/bin/parahub-autoupdate
@@ -0,0 +1,97 @@
+#!/bin/sh
+# Parahub Mesh — OTA Auto-Update
+# Checks manifest.json for new firmware, downloads and verifies, runs sysupgrade.
+# Runs nightly via cron. Lock file prevents concurrent runs.
+
+LOCK="/tmp/parahub-autoupdate.lock"
+MANIFEST_YGG="http://[200:abb9:5810:37d3:8a4c:98a6:b82b:969a]/firmware/manifest.json"
+MANIFEST_PUBLIC="https://parahub.io/firmware/manifest.json"
+FIRMWARE_YGG="http://[200:abb9:5810:37d3:8a4c:98a6:b82b:969a]/firmware"
+FIRMWARE_PUBLIC="https://parahub.io/firmware"
+
+# Lock — exit if already running
+if [ -f "$LOCK" ]; then
+    LOCK_PID=$(cat "$LOCK" 2>/dev/null)
+    if kill -0 "$LOCK_PID" 2>/dev/null; then
+        logger -t parahub-update "Already running (pid $LOCK_PID), exiting"
+        exit 0
+    fi
+    rm -f "$LOCK"
+fi
+echo $$ > "$LOCK"
+trap 'rm -f "$LOCK"' EXIT
+
+# Read current version and device profile
+CURRENT_VERSION=$(cat /etc/parahub/version 2>/dev/null)
+DEVICE_PROFILE=$(cat /etc/parahub/profile 2>/dev/null)
+ROLE=$(cat /etc/parahub/role 2>/dev/null || echo "unknown")
+
+if [ -z "$CURRENT_VERSION" ] || [ -z "$DEVICE_PROFILE" ]; then
+    logger -t parahub-update "Missing /etc/parahub/version or /etc/parahub/profile, skipping"
+    exit 1
+fi
+
+# Fetch manifest (Yggdrasil first for bumblebee, public for bee)
+MANIFEST=""
+if [ "$ROLE" != "bee" ] && ping6 -c 1 -W 3 200:abb9:5810:37d3:8a4c:98a6:b82b:969a >/dev/null 2>&1; then
+    MANIFEST=$(curl -s -m 30 "$MANIFEST_YGG" 2>/dev/null)
+    BASE_URL="$FIRMWARE_YGG"
+fi
+
+if [ -z "$MANIFEST" ]; then
+    MANIFEST=$(curl -s -m 30 "$MANIFEST_PUBLIC" 2>/dev/null)
+    BASE_URL="$FIRMWARE_PUBLIC"
+fi
+
+if [ -z "$MANIFEST" ]; then
+    logger -t parahub-update "Failed to fetch manifest"
+    exit 1
+fi
+
+# Parse manifest with jsonfilter
+NEW_VERSION=$(echo "$MANIFEST" | jsonfilter -e '$.version' 2>/dev/null)
+SYSUPGRADE_FILE=$(echo "$MANIFEST" | jsonfilter -e "$.devices.${DEVICE_PROFILE}.sysupgrade" 2>/dev/null)
+EXPECTED_SHA256=$(echo "$MANIFEST" | jsonfilter -e "$.devices.${DEVICE_PROFILE}.sha256" 2>/dev/null)
+
+if [ -z "$NEW_VERSION" ]; then
+    logger -t parahub-update "Could not parse version from manifest"
+    exit 1
+fi
+
+if [ -z "$SYSUPGRADE_FILE" ] || [ -z "$EXPECTED_SHA256" ]; then
+    logger -t parahub-update "Device ${DEVICE_PROFILE} not found in manifest"
+    exit 0
+fi
+
+# Compare versions
+if [ "$CURRENT_VERSION" = "$NEW_VERSION" ]; then
+    logger -t parahub-update "Already up to date: ${CURRENT_VERSION}"
+    exit 0
+fi
+
+logger -t parahub-update "Update available: ${CURRENT_VERSION} → ${NEW_VERSION}"
+
+# Download firmware
+FIRMWARE_PATH="/tmp/firmware.bin"
+rm -f "$FIRMWARE_PATH"
+
+curl -s -m 600 -o "$FIRMWARE_PATH" "${BASE_URL}/${SYSUPGRADE_FILE}" 2>/dev/null
+
+if [ ! -f "$FIRMWARE_PATH" ]; then
+    logger -t parahub-update "Download failed: ${SYSUPGRADE_FILE}"
+    exit 1
+fi
+
+# Verify SHA256
+ACTUAL_SHA256=$(sha256sum "$FIRMWARE_PATH" | cut -d' ' -f1)
+
+if [ "$ACTUAL_SHA256" != "$EXPECTED_SHA256" ]; then
+    logger -t parahub-update "SHA256 mismatch! Expected: ${EXPECTED_SHA256}, Got: ${ACTUAL_SHA256}"
+    rm -f "$FIRMWARE_PATH"
+    exit 1
+fi
+
+logger -t parahub-update "SHA256 verified, starting sysupgrade to ${NEW_VERSION}..."
+
+# Run sysupgrade (preserves /etc/config/ by default + /etc/sysupgrade.conf entries)
+sysupgrade "$FIRMWARE_PATH"
--- a/files/usr/bin/parahub-heartbeat
+++ b/files/usr/bin/parahub-heartbeat
@@ -32,7 +32,8 @@ case "$HW" in
    *) HW="${HW:-unknown}" ;;
 esac

-PAYLOAD="{\"mac\":\"${MAC}\",\"hostname\":\"${HOSTNAME}\",\"yggdrasil_address\":\"${YGG_ADDR}\",\"firmware_version\":\"25.12.0-rc4\",\"hardware_profile\":\"${HW}\",\"uptime\":${UPTIME},\"private_ssid\":\"${SSID}\",\"firmware_role\":\"${ROLE}\",\"mesh_ip\":\"${MESH_IP}\"}"
+FW_VERSION=$(cat /etc/parahub/version 2>/dev/null || echo "unknown")
+PAYLOAD="{\"mac\":\"${MAC}\",\"hostname\":\"${HOSTNAME}\",\"yggdrasil_address\":\"${YGG_ADDR}\",\"firmware_version\":\"${FW_VERSION}\",\"hardware_profile\":\"${HW}\",\"uptime\":${UPTIME},\"private_ssid\":\"${SSID}\",\"firmware_role\":\"${ROLE}\",\"mesh_ip\":\"${MESH_IP}\"}"

 RESPONSE=""

--- a/files/usr/bin/parahub-speed-control
+++ b/files/usr/bin/parahub-speed-control
@@ -25,12 +25,16 @@ case "$1" in
    # tc filter: packets with mark 0x20 → paid class
    tc filter add dev $IFACE parent 1: protocol ip handle 0x20 fw flowid 1:20

+    # Exempt ALL IPv6 from shaping — only Yggdrasil IPv6 reaches guests (firewall enforced)
+    tc filter add dev $IFACE parent 1: protocol ipv6 prio 1 u32 match u32 0 0 flowid 1:20
+
    # --- Ingress shaping (client → router, i.e. upload for client) via IFB ---
    ip link add ifb-guest type ifb 2>/dev/null
    ip link set ifb-guest up
    tc qdisc del dev $IFACE ingress 2>/dev/null
    tc qdisc add dev $IFACE ingress
    tc filter add dev $IFACE parent ffff: protocol ip u32 match u32 0 0 action mirred egress redirect dev ifb-guest
+    tc filter add dev $IFACE parent ffff: protocol ipv6 u32 match u32 0 0 action mirred egress redirect dev ifb-guest

    tc qdisc del dev ifb-guest root 2>/dev/null
    tc qdisc add dev ifb-guest root handle 1: htb default 10
@@ -41,6 +45,9 @@ case "$1" in
    tc qdisc add dev ifb-guest parent 1:20 fq_codel
    tc filter add dev ifb-guest parent 1: protocol ip handle 0x20 fw flowid 1:20

+    # Exempt ALL IPv6 from ingress shaping
+    tc filter add dev ifb-guest parent 1: protocol ipv6 prio 1 u32 match u32 0 0 flowid 1:20
+
    # --- nftables: paid_clients set + mark rules ---
    nft add table inet parahub 2>/dev/null
    nft flush table inet parahub 2>/dev/null