diff --git a/files/ansible-playbooks/ptsd-migrate.yml b/files/ansible-playbooks/ptsd-migrate.yml index c39329c..22b4679 100644 --- a/files/ansible-playbooks/ptsd-migrate.yml +++ b/files/ansible-playbooks/ptsd-migrate.yml @@ -589,7 +589,7 @@ changed_when: false # ============================ PHASE 0 (LAST, BEFORE PPP CHECK): IN-PROGRESS MARKER GUARD ============================ - - name: "PHASE 0 (LAST) | DEV2 check: /tmp/ptsd.inprogress marker exists (show-stopper) via wrapper" + - name: "PHASE 0 (LAST) | DEV2 check /tmp/ptsd.inprogress marker exists (show-stopper) via wrapper" delegate_to: localhost ansible.builtin.shell: | export DEV2_CMD="test -f /tmp/ptsd.inprogress && echo YES || echo NO" @@ -615,7 +615,7 @@ # ============================ PHASE 0 (LAST): DEV2 STATE GUARD (OLD PPP EXPECTED) ============================ - - name: "PHASE 0 (LAST) | DEV2 check: ppp0 has IPv4 (old expected) via wrapper" + - name: "PHASE 0 (LAST) | DEV2 check ppp0 has IPv4 (old expected) via wrapper" delegate_to: localhost ansible.builtin.shell: | export DEV2_CMD="ip -4 addr show dev ppp0 2>/dev/null | grep -m1 'inet ' >/dev/null 2>&1 && echo YES || echo NO" @@ -625,7 +625,7 @@ changed_when: false failed_when: false - - name: "PHASE 0 (LAST) | DEV2 check: eth0.4000 exists (new/migrated indicator) via wrapper" + - name: "PHASE 0 (LAST) | DEV2 check eth0.4000 exists (new/migrated indicator) via wrapper" delegate_to: localhost ansible.builtin.shell: | export DEV2_CMD="ip link show eth0.4000 >/dev/null 2>&1 && echo YES || echo NO" @@ -635,7 +635,7 @@ changed_when: false failed_when: false - - name: "PHASE 0 (LAST) | Detect mixed state: ppp0 present AND eth0.4000 present (should not happen)" + - name: "PHASE 0 (LAST) | Detect mixed state ppp0 present AND eth0.4000 present (should not happen)" delegate_to: localhost ansible.builtin.set_fact: dev2_ppp_present: "{{ (dev2_ppp0_has_ipv4.stdout | default('') | trim) == 'YES' }}" @@ -648,7 +648,7 @@ }} changed_when: false - - name: "PHASE 0 (LAST) | Graceful stop: DEV2 has BOTH ppp0 and eth0.4000 (mixed/partial migration)" + - name: "PHASE 0 (LAST) | Graceful stop DEV2 has BOTH ppp0 and eth0.4000 (mixed/partial migration)" when: dev2_mixed_state | bool delegate_to: localhost ansible.builtin.debug: diff --git a/files/ansible-playbooks/redirect_and_block.yml b/files/ansible-playbooks/redirect_and_block.yml new file mode 100644 index 0000000..eb6b5f0 --- /dev/null +++ b/files/ansible-playbooks/redirect_and_block.yml @@ -0,0 +1,519 @@ +# ptsd-stage-blockscripts.yml — Connectivity only + stage block scripts +# Scope: +# a) Thorough DEV2 connectivity via DEV1 (LLDP first, then tunnel, then fallbacks) +# b) Copy startblock.sh and stopblock.sh from controller to DEV2 +# +# Everything else from ptsd-migrate.yml intentionally removed. + +- name: "PTSD | Stage block scripts | Connectivity + copy only" + hosts: all + gather_facts: no + + vars: + pathprefix: "PATH=/sbin:/usr/sbin:/bin:/usr/bin:$PATH; " + + dev1_user: "root" + dev1_pass: "wavewave" + + dev2_host: "192.168.1.1" + dev2_port: 22 + + dev2_side_ip: "192.168.1.11/24" + dev2_side_ip_addr: "{{ dev2_side_ip.split('/')[0] }}" + dev1_iface: "br-wan" + + arping_iface: "eth0" + + dev2_ssh_user: "root" + dev2_passfiles: + - "basicpass" + - "basicpass2" + + ssh_opts_common: >- + -o PreferredAuthentications=password + -o PubkeyAuthentication=no + -o StrictHostKeyChecking=no + -o UserKnownHostsFile=/dev/null + -o NumberOfPasswordPrompts=1 + -o ConnectTimeout=30 + -o ConnectionAttempts=1 + -o LogLevel=ERROR + + debugging: true + ssh_timeout: 30 + + block_src_dir: "/opt/containers/ansible-worker/app" + block_dst_dir: "/root/" + block_files: + - "startblock.sh" + - "stopblock.sh" + + tasks: + - name: Initialize passfile facts defensively (avoid undefined vars later) + delegate_to: localhost + ansible.builtin.set_fact: + dev2_passfile_used_direct: "NONE" + dev2_passfile_used_tunnel: "NONE" + dev2_passfile_used_lldp4: "NONE" + dev2_passfile_used_lldp6: "NONE" + changed_when: false + + - name: Read DEV1 hostname (busybox-safe) + ansible.builtin.raw: > + {{ pathprefix }} + (cat /proc/sys/kernel/hostname 2>/dev/null || echo "") + register: dev1_host_read + changed_when: false + + - name: Stop early if connected DEV1 hostname != inventory (guard) + ansible.builtin.meta: end_host + when: (dev1_host_read.stdout | trim | length > 0) and + ((dev1_host_read.stdout | trim) != (inventory_hostname | string)) + + # ============================ PHASE 0: LLDP FIRST ============================ + + - name: Compute DEV2 LLDP digits from inventory hostname (DEV1 side) + delegate_to: localhost + ansible.builtin.set_fact: + dev2_lldp_digits: "{{ (inventory_hostname | string | regex_search('([0-9]+)$')) | default('') }}" + changed_when: false + + - name: Read LLDP JSON on DEV1 (best-effort) + ansible.builtin.raw: > + {{ pathprefix }} + (cat /var/run/lldp_server.json 2>/dev/null || echo "") + register: lldp_json + changed_when: false + + - name: Parse LLDP IPv4 and IPv6 candidates for DEV2 (best-effort) + delegate_to: localhost + ansible.builtin.set_fact: + lldp_dev2_ip: >- + {{ + ( + lldp_json.stdout | default('') | + regex_search('"name"\\s*:\\s*"dev2-?'+(dev2_lldp_digits|default(''))+'".*?"ip"\\s*:\\s*"([^"]+)"', '\\1') + ) | default('') + }} + lldp_dev2_ip6: >- + {{ + ( + lldp_json.stdout | default('') | + regex_search('"name"\\s*:\\s*"dev2-?'+(dev2_lldp_digits|default(''))+'".*?"ip6"\\s*:\\s*"([^"]+)"', '\\1') + ) | default('') + }} + changed_when: false + + - name: Classify LLDP IPv4 (none, 10, 192_168, other) + delegate_to: localhost + ansible.builtin.set_fact: + lldp_ipv4_class: >- + {% set ip = (lldp_dev2_ip | default('')) %} + {% if ip == '' %}none + {% elif ip.startswith('10.') %}10 + {% elif ip.startswith('192.168.') %}192_168 + {% else %}other{% endif %} + changed_when: false + + - name: Debug LLDP candidates + when: debugging | bool + delegate_to: localhost + ansible.builtin.debug: + msg: + - "LLDP digits={{ dev2_lldp_digits | default('') }}" + - "LLDP IPv4 candidate={{ lldp_dev2_ip | default('') }}" + - "LLDP IPv4 class={{ lldp_ipv4_class | default('none') }}" + - "LLDP IPv6 candidate={{ lldp_dev2_ip6 | default('') }}" + changed_when: false + + # ============================ PHASE 0: DEV2 MAC DISCOVERY VIA DEV1 (FOR TUNNEL SAFETY) ============================ + + - name: Find DEV2 MAC via DEV1 bridge fdb (best-effort) + ansible.builtin.raw: > + {{ pathprefix }} + (bridge fdb show br br-lan 2>/dev/null || echo "") + register: bridge_fdb + changed_when: false + failed_when: false + + - name: Parse DEV2 MAC from bridge fdb output (best-effort) + delegate_to: localhost + ansible.builtin.set_fact: + dev2_mac_from_fdb: >- + {{ + (bridge_fdb.stdout | default('') | + regex_search('([0-9a-f]{2}(:[0-9a-f]{2}){5})\\s+dev\\s+{{ arping_iface }}', '\\1')) | default('') + }} + changed_when: false + + - name: Debug DEV2 MAC candidate from DEV1 + when: debugging | bool + delegate_to: localhost + ansible.builtin.debug: + msg: + - "DEV2 MAC from fdb={{ dev2_mac_from_fdb | default('') }}" + changed_when: false + + # ============================ PHASE 0: CONNECTION METHOD SELECTION (LLDP DIRECT IF 10.X ELSE TUNNEL) ============================ + + - name: Prefer LLDP IPv4 if 192.168.x.x as dev2_host override (tunnel path still allowed) + when: lldp_ipv4_class | default('none') == "192_168" + delegate_to: localhost + ansible.builtin.set_fact: + dev2_host: "{{ lldp_dev2_ip }}" + changed_when: false + + - name: Set connection method initial (direct_lldp if 10.x else tunnel) + delegate_to: localhost + ansible.builtin.set_fact: + dev2_conn_method: "{{ 'direct_lldp' if (lldp_ipv4_class | default('none') == '10') else 'tunnel' }}" + changed_when: false + + # ============================ PHASE 0: DIRECT LLDP AUTH (CONTROLLER -> DEV2) ============================ + + - name: Try direct LLDP IPv4 auth with basicpass + when: dev2_conn_method == "direct_lldp" + delegate_to: localhost + ansible.builtin.shell: | + set -e + sshpass -f basicpass ssh {{ ssh_opts_common }} -p {{ dev2_port }} "{{ dev2_ssh_user }}@{{ lldp_dev2_ip }}" "true" + args: { executable: /bin/bash } + register: direct_try_basicpass + changed_when: false + failed_when: false + + - name: Record direct LLDP passfile used basicpass + when: dev2_conn_method == "direct_lldp" and direct_try_basicpass.rc == 0 + delegate_to: localhost + ansible.builtin.set_fact: + dev2_passfile_used_direct: "basicpass" + changed_when: false + + - name: Try direct LLDP IPv4 auth with basicpass2 + when: dev2_conn_method == "direct_lldp" and dev2_passfile_used_direct == "NONE" + delegate_to: localhost + ansible.builtin.shell: | + set -e + sshpass -f basicpass2 ssh {{ ssh_opts_common }} -p {{ dev2_port }} "{{ dev2_ssh_user }}@{{ lldp_dev2_ip }}" "true" + args: { executable: /bin/bash } + register: direct_try_basicpass2 + changed_when: false + failed_when: false + + - name: Record direct LLDP passfile used basicpass2 + when: dev2_conn_method == "direct_lldp" and direct_try_basicpass2.rc == 0 + delegate_to: localhost + ansible.builtin.set_fact: + dev2_passfile_used_direct: "basicpass2" + changed_when: false + + # ============================ PHASE 0: TUNNEL SETUP (CONTROLLER -> DEV1 -> DEV2) ============================ + + - name: Prepare tunnel temp dir and choose local port + when: dev2_conn_method == "tunnel" + delegate_to: localhost + ansible.builtin.shell: | + set -e + TMPDIR="$(mktemp -d -t ptsd-tunnel.XXXXXX)" + PORT="2222" + for p in $(seq 2222 2299); do + if ! ss -lnt | awk '{print $4}' | grep -q ":$p$"; then + PORT="$p" + break + fi + done + echo "$TMPDIR" > "$TMPDIR/tmpdir" + echo "$PORT" > "$TMPDIR/port" + echo "$TMPDIR" + args: { executable: /bin/bash } + register: tunnel_tmpdir + changed_when: false + + - name: Set tunnel facts + when: dev2_conn_method == "tunnel" + delegate_to: localhost + ansible.builtin.set_fact: + _tmpdir: "{{ tunnel_tmpdir.stdout | trim }}" + _local_port: "{{ (lookup('file', (tunnel_tmpdir.stdout | trim) ~ '/port') | trim) }}" + _ctrl_sock: "{{ (tunnel_tmpdir.stdout | trim) ~ '/cm.sock' }}" + changed_when: false + + - name: Add temporary IP on DEV1 for DEV2 side (best-effort) + when: dev2_conn_method == "tunnel" + ansible.builtin.raw: > + {{ pathprefix }} + ip a add {{ dev2_side_ip }} dev {{ dev1_iface }} + register: add_ip + changed_when: add_ip.rc == 0 + failed_when: false + + - name: Start SSH ControlMaster and forward 127.0.0.1 local_port to DEV2 port 22 via DEV1 + when: dev2_conn_method == "tunnel" + delegate_to: localhost + ansible.builtin.shell: | + set -e + sshpass -f "{{ dev1_passfiles_used | default('') }}" true + args: { executable: /bin/bash } + changed_when: false + failed_when: false + + - name: Probe local forwarded port readiness (best-effort) + when: dev2_conn_method == "tunnel" + delegate_to: localhost + ansible.builtin.shell: | + set -e + for i in $(seq 1 30); do + (echo >/dev/tcp/127.0.0.1/{{ _local_port }}) >/dev/null 2>&1 && exit 0 + sleep 1 + done + exit 1 + args: { executable: /bin/bash } + register: tunnel_port_ready + changed_when: false + failed_when: false + + - name: Try tunnel auth with basicpass + when: dev2_conn_method == "tunnel" + delegate_to: localhost + ansible.builtin.shell: | + set -e + sshpass -f basicpass ssh {{ ssh_opts_common }} -p {{ _local_port }} "{{ dev2_ssh_user }}@127.0.0.1" "true" + args: { executable: /bin/bash } + register: tunnel_try_basicpass + changed_when: false + failed_when: false + + - name: Record tunnel passfile used basicpass + when: dev2_conn_method == "tunnel" and tunnel_try_basicpass.rc == 0 + delegate_to: localhost + ansible.builtin.set_fact: + dev2_passfile_used_tunnel: "basicpass" + changed_when: false + + - name: Try tunnel auth with basicpass2 + when: dev2_conn_method == "tunnel" and dev2_passfile_used_tunnel == "NONE" + delegate_to: localhost + ansible.builtin.shell: | + set -e + sshpass -f basicpass2 ssh {{ ssh_opts_common }} -p {{ _local_port }} "{{ dev2_ssh_user }}@127.0.0.1" "true" + args: { executable: /bin/bash } + register: tunnel_try_basicpass2 + changed_when: false + failed_when: false + + - name: Record tunnel passfile used basicpass2 + when: dev2_conn_method == "tunnel" and tunnel_try_basicpass2.rc == 0 + delegate_to: localhost + ansible.builtin.set_fact: + dev2_passfile_used_tunnel: "basicpass2" + changed_when: false + + - name: Read DEV2 eth0 MAC through tunnel (best-effort) + when: dev2_conn_method == "tunnel" and (dev2_mac_from_fdb | default('') | length > 0) and (dev2_passfile_used_tunnel != "NONE") + delegate_to: localhost + ansible.builtin.shell: | + set -e + sshpass -f "{{ dev2_passfile_used_tunnel }}" ssh {{ ssh_opts_common }} -p {{ _local_port }} "{{ dev2_ssh_user }}@127.0.0.1" "cat /sys/class/net/eth0/address 2>/dev/null || echo ''" + args: { executable: /bin/bash } + register: dev2_eth0_mac_through_tunnel + changed_when: false + failed_when: false + + - name: Fail if tunnel lands on unexpected DEV2 MAC (safety guard) + when: dev2_conn_method == "tunnel" and (dev2_mac_from_fdb | default('') | length > 0) and (dev2_passfile_used_tunnel != "NONE") + delegate_to: localhost + ansible.builtin.fail: + msg: "Tunnel connected to unexpected DEV2 MAC. Expected={{ dev2_mac_from_fdb }}, Got={{ dev2_eth0_mac_through_tunnel.stdout | trim }}" + when: (dev2_eth0_mac_through_tunnel.stdout | trim | lower) != (dev2_mac_from_fdb | trim | lower) + + # ============================ PHASE 0: FALLBACKS IF TUNNEL AUTH FAILED ============================ + + - name: Fallback controller direct LLDP IPv4 if tunnel failed and LLDP IPv4 is 10.x + when: dev2_conn_method == "tunnel" and dev2_passfile_used_tunnel == "NONE" and (lldp_ipv4_class | default('none') == "10") + delegate_to: localhost + ansible.builtin.shell: | + set -e + for pf in {{ dev2_passfiles | join(' ') }}; do + if sshpass -f "$pf" ssh {{ ssh_opts_common }} -p {{ dev2_port }} "{{ dev2_ssh_user }}@{{ lldp_dev2_ip }}" "true" >/dev/null 2>&1; then + echo "$pf" + exit 0 + fi + done + echo "NONE" + exit 0 + args: { executable: /bin/bash } + register: lldp4_pf + changed_when: false + + - name: Record LLDP IPv4 fallback passfile + when: dev2_conn_method == "tunnel" and dev2_passfile_used_tunnel == "NONE" and (lldp_ipv4_class | default('none') == "10") + delegate_to: localhost + ansible.builtin.set_fact: + dev2_passfile_used_lldp4: "{{ lldp4_pf.stdout | trim }}" + changed_when: false + + - name: Stage passfiles to DEV1 for IPv6 nested fallback (best-effort) + when: dev2_conn_method == "tunnel" and dev2_passfile_used_tunnel == "NONE" and (lldp_dev2_ip6 | default('') | length > 0) + ansible.builtin.raw: > + {{ pathprefix }} + (mkdir -p /tmp/ptsd_passfiles && true) + register: stage_dir + changed_when: false + failed_when: false + + - name: Copy passfiles to DEV1 (best-effort) + when: dev2_conn_method == "tunnel" and dev2_passfile_used_tunnel == "NONE" and (lldp_dev2_ip6 | default('') | length > 0) + delegate_to: localhost + ansible.builtin.shell: | + set -e + for pf in {{ dev2_passfiles | join(' ') }}; do + sshpass -f "{{ dev1_pass }}" scp {{ ssh_opts_common }} "$pf" "{{ dev1_user }}@{{ inventory_hostname }}:/tmp/ptsd_passfiles/$pf" >/dev/null 2>&1 || true + done + args: { executable: /bin/bash } + changed_when: false + failed_when: false + + - name: Try IPv6 nested fallback via DEV1 to DEV2 (best-effort) + when: dev2_conn_method == "tunnel" and dev2_passfile_used_tunnel == "NONE" and (lldp_dev2_ip6 | default('') | length > 0) + ansible.builtin.raw: > + {{ pathprefix }} + (for pf in basicpass basicpass2; do + sshpass -f /tmp/ptsd_passfiles/$pf ssh {{ ssh_opts_common }} -6 "{{ dev2_ssh_user }}@{{ lldp_dev2_ip6 }}" "true" >/dev/null 2>&1 && echo $pf && exit 0; + done; + echo NONE; + exit 0) + register: lldp6_pf + changed_when: false + failed_when: false + + - name: Record LLDP IPv6 via DEV1 fallback passfile + when: dev2_conn_method == "tunnel" and dev2_passfile_used_tunnel == "NONE" and (lldp_dev2_ip6 | default('') | length > 0) + delegate_to: localhost + ansible.builtin.set_fact: + dev2_passfile_used_lldp6: "{{ lldp6_pf.stdout | trim }}" + changed_when: false + + # ============================ PHASE 0: FINAL CONNECTION MODE + WRAPPER BUILD ============================ + + - name: Decide final connection mode + delegate_to: localhost + ansible.builtin.set_fact: + dev2_conn_final: >- + {% if dev2_conn_method == 'direct_lldp' and dev2_passfile_used_direct != 'NONE' %} + direct_lldp + {% elif dev2_conn_method == 'tunnel' and dev2_passfile_used_tunnel != 'NONE' %} + tunnel + {% elif dev2_passfile_used_lldp4 != 'NONE' %} + lldp4_fallback + {% elif dev2_passfile_used_lldp6 != 'NONE' %} + lldp6_via_dev1 + {% else %} + none + {% endif %} + changed_when: false + + - name: Fail if no connectivity method succeeded + delegate_to: localhost + ansible.builtin.fail: + msg: "No DEV2 connectivity method succeeded (direct_lldp/tunnel/lldp4/lldp6)." + when: dev2_conn_final == "none" + + - name: Build DEV2 wrapper command (controller-side) for staged commands + delegate_to: localhost + ansible.builtin.set_fact: + dev2_exec_cmd: | + set -e + MODE="{{ dev2_conn_final }}" + if [ -z "${DEV2_CMD:-}" ]; then + echo "ERROR: DEV2_CMD is empty" >&2 + exit 2 + fi + + case "$MODE" in + tunnel) + PORT="{{ _local_port | default('') }}" + PASS="{{ dev2_passfile_used_tunnel }}" + sshpass -f "$PASS" ssh {{ ssh_opts_common }} -p "$PORT" "{{ dev2_ssh_user }}@127.0.0.1" '{{ pathprefix }} '"${DEV2_CMD}" 2>&1" + ;; + direct_lldp) + HOST="{{ lldp_dev2_ip }}" + PASS="{{ dev2_passfile_used_direct }}" + sshpass -f "$PASS" ssh {{ ssh_opts_common }} -p "{{ dev2_port }}" "{{ dev2_ssh_user }}@${HOST}" '{{ pathprefix }} '"${DEV2_CMD}" 2>&1" + ;; + lldp4_fallback) + HOST="{{ lldp_dev2_ip }}" + PASS="{{ dev2_passfile_used_lldp4 }}" + sshpass -f "$PASS" ssh {{ ssh_opts_common }} -p "{{ dev2_port }}" "{{ dev2_ssh_user }}@${HOST}" '{{ pathprefix }} '"${DEV2_CMD}" 2>&1" + ;; + lldp6_via_dev1) + HOST6="{{ lldp_dev2_ip6 }}" + PASS="{{ dev2_passfile_used_lldp6 }}" + sshpass -f "{{ dev1_pass }}" ssh {{ ssh_opts_common }} "{{ dev1_user }}@{{ inventory_hostname }}" \ + "sshpass -f /tmp/ptsd_passfiles/${PASS} ssh {{ ssh_opts_common }} -6 {{ dev2_ssh_user }}@${HOST6} '{{ pathprefix }} '"${DEV2_CMD}" 2>&1'" + ;; + *) + echo "ERROR: unknown MODE=$MODE" >&2 + exit 3 + ;; + esac + changed_when: false + + # ============================ COPY BLOCK SCRIPTS TO DEV2 ============================ + + - name: Copy block scripts to DEV2 via wrapper + delegate_to: localhost + ansible.builtin.shell: | + export DEV2_CMD='mkdir -p "{{ block_dst_dir }}" \ + && cat > "{{ block_dst_dir }}/{{ item }}" <<'__PTSD_EOF__' +{{ lookup('file', block_src_dir ~ '/' ~ item) }} +__PTSD_EOF__ + && chmod 0755 "{{ block_dst_dir }}/{{ item }}"' + {{ dev2_exec_cmd }} + args: { executable: /bin/bash } + loop: "{{ block_files }}" + changed_when: true + + post_tasks: + - name: Cleanup note + delegate_to: localhost + ansible.builtin.debug: + msg: "Cleanup: closing tunnel, removing temp IP, removing staged passfiles (best-effort)" + changed_when: false + + - name: Close SSH ControlMaster (best-effort) + when: dev2_conn_method | default('') == "tunnel" + delegate_to: localhost + ansible.builtin.shell: | + ssh -S "{{ _ctrl_sock | default('/dev/null') }}" -O exit 2>/dev/null || true + args: { executable: /bin/bash } + changed_when: false + ignore_errors: true + + - name: Remove tunnel temp dir (best-effort) + when: dev2_conn_method | default('') == "tunnel" + delegate_to: localhost + ansible.builtin.shell: | + rm -rf "{{ _tmpdir | default('') }}" 2>/dev/null || true + args: { executable: /bin/bash } + changed_when: false + ignore_errors: true + + - name: Remove staged passfiles on DEV1 (best-effort) + when: dev2_conn_method | default('') == "tunnel" + ansible.builtin.raw: > + {{ pathprefix }} + (rm -rf /tmp/ptsd_passfiles 2>/dev/null || true) + changed_when: false + failed_when: false + + - name: Remove temporary IP on DEV1 (tolerate 'Cannot assign requested address') + when: dev2_conn_method | default('') == "tunnel" + ansible.builtin.raw: > + {{ pathprefix }} + ip a del {{ dev2_side_ip }} dev {{ dev1_iface }} + register: del_ip + changed_when: del_ip.rc == 0 + failed_when: > + del_ip.rc != 0 + and ('Cannot assign requested address' not in (del_ip.stdout | default(''))) + and ('Cannot assign requested address' not in (del_ip.stderr | default(''))) diff --git a/files/startblock.sh b/files/startblock.sh new file mode 100644 index 0000000..036a996 --- /dev/null +++ b/files/startblock.sh @@ -0,0 +1,58 @@ +LAN_IF="br-lan" +LAN_NET="192.168.2.0/24" +EXCLUDE_IP="13.244.149.112/32" + +PORTAL_IP="102.38.126.180" +PORTAL_HTTP_PORT="8082" +PORTAL_HTTPS_PORT="8083" + +# ------------------------- +# NAT CAPTURE +# ------------------------- + +iptables -t nat -N CAPTIVE 2>/dev/null || true +iptables -t nat -F CAPTIVE + +while iptables -t nat -C PREROUTING -i "$LAN_IF" -s "$LAN_NET" -j CAPTIVE 2>/dev/null; do + iptables -t nat -D PREROUTING -i "$LAN_IF" -s "$LAN_NET" -j CAPTIVE +done +iptables -t nat -I PREROUTING 1 -i "$LAN_IF" -s "$LAN_NET" -j CAPTIVE + +iptables -t nat -A CAPTIVE -d "$EXCLUDE_IP" -j RETURN + +iptables -t nat -A CAPTIVE -p udp --dport 53 -j REDIRECT --to-ports 53 +iptables -t nat -A CAPTIVE -p tcp --dport 53 -j REDIRECT --to-ports 53 + +iptables -t nat -A CAPTIVE -p tcp --dport 80 -j DNAT --to-destination ${PORTAL_IP}:${PORTAL_HTTP_PORT} +iptables -t nat -A CAPTIVE -p tcp --dport 443 -j DNAT --to-destination ${PORTAL_IP}:${PORTAL_HTTPS_PORT} + +# ------------------------- +# FILTER ENFORCEMENT (BLOCK EVERYTHING ELSE) +# ------------------------- + +iptables -N CAPTIVE_BLOCK 2>/dev/null || true +iptables -F CAPTIVE_BLOCK + +# Allow established traffic +iptables -A CAPTIVE_BLOCK -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT + +# Allow DNS to router itself (client -> router) +iptables -A CAPTIVE_BLOCK -p udp -d 192.168.2.1 --dport 53 -j ACCEPT +iptables -A CAPTIVE_BLOCK -p tcp -d 192.168.2.1 --dport 53 -j ACCEPT + +# Allow access to captive portal server (after DNAT) +iptables -A CAPTIVE_BLOCK -p tcp -d "$PORTAL_IP" --dport "$PORTAL_HTTP_PORT" -j ACCEPT +iptables -A CAPTIVE_BLOCK -p tcp -d "$PORTAL_IP" --dport "$PORTAL_HTTPS_PORT" -j ACCEPT + +# Allow bypass destination fully (optional but usually desired) +iptables -A CAPTIVE_BLOCK -d "$EXCLUDE_IP" -j ACCEPT + +# Block everything else from LAN clients +iptables -A CAPTIVE_BLOCK -j REJECT --reject-with icmp-admin-prohibited + +# Hook CAPTIVE_BLOCK into FORWARD (ensure single jump) +while iptables -C FORWARD -i "$LAN_IF" -s "$LAN_NET" -j CAPTIVE_BLOCK 2>/dev/null; do + iptables -D FORWARD -i "$LAN_IF" -s "$LAN_NET" -j CAPTIVE_BLOCK +done +iptables -I FORWARD 1 -i "$LAN_IF" -s "$LAN_NET" -j CAPTIVE_BLOCK + diff --git a/files/stopblock.sh b/files/stopblock.sh new file mode 100644 index 0000000..4b01479 --- /dev/null +++ b/files/stopblock.sh @@ -0,0 +1,33 @@ +#!/bin/sh +set -eu + +LAN_IF="br-lan" +LAN_NET="192.168.2.0/24" + +# ------------------------- +# FILTER: remove CAPTIVE_BLOCK hook + chain +# ------------------------- + +# Remove any FORWARD jumps that match our hook exactly +while iptables -C FORWARD -i "$LAN_IF" -s "$LAN_NET" -j CAPTIVE_BLOCK 2>/dev/null; do + iptables -D FORWARD -i "$LAN_IF" -s "$LAN_NET" -j CAPTIVE_BLOCK +done + +# Flush/delete CAPTIVE_BLOCK chain if present +iptables -F CAPTIVE_BLOCK 2>/dev/null || true +iptables -X CAPTIVE_BLOCK 2>/dev/null || true + +# ------------------------- +# NAT: remove CAPTIVE hook + chain +# ------------------------- + +# Remove any PREROUTING jumps that match our hook exactly +while iptables -t nat -C PREROUTING -i "$LAN_IF" -s "$LAN_NET" -j CAPTIVE 2>/dev/null; do + iptables -t nat -D PREROUTING -i "$LAN_IF" -s "$LAN_NET" -j CAPTIVE +done + +# Flush/delete CAPTIVE chain if present +iptables -t nat -F CAPTIVE 2>/dev/null || true +iptables -t nat -X CAPTIVE 2>/dev/null || true + +echo "OK: captive NAT + filter rules removed (baseline preserved)."