mirror of
https://github.com/kuhyx/testsAndMisc.git
synced 2026-11-10 19:07:04 +01:00
Krzysztof kuhy Rudnicki
1ea94e142c
Gateway mode routes LAN devices through the PC: forced DNS, DoH/DoT dropped. The work laptop still bypassed it through Cloudflare WARP, so the WARP ingress is dropped too. warp_window.sh opens it for the LAN only Mon/Fri 09:00-15:30 (nft set with a timeout to 15:30), asked for over a forced-command key by warp_home.sh, which keeps WARP off at home otherwise because WARP fails closed. Also: dnsmasq upstreams, AAAA filtering, DoH canary, and extracted_repo_dir resolving ~/src first (the nightly blocklist refresh had failed since 2026-09-11). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019C8pdLR4MePsLocE1pWz7F
74 lines
3.0 KiB
Bash
Executable File
74 lines
3.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Tests for dns_units.sh -- the dnsmasq config and its systemd drop-in.
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#
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# Both regressions this guards were invisible to a presence check. With
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# bind-interfaces, dnsmasq died at every boot ("unknown interface enp6s0")
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# because it started before the NIC existed. The drop-in's
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# After=network-online.target formed an ordering cycle with the stock unit's
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# Before=network-online.target, and systemd broke it by deleting a job.
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#
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# Rendering writes only where it is told, so this suite needs no jail.
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set -euo pipefail
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck source=./features_harness.sh
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. "$SCRIPT_DIR/features_harness.sh"
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_t_setup_env
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trap _t_teardown EXIT
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ensure_dir() { mkdir -p "$1"; }
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log_info() { :; }
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# shellcheck source=../dns_units.sh
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. "$SCRIPT_DIR/../dns_units.sh"
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DNSMASQ_CONF="$TEST_TMPDIR/dnsmasq.d/lan-blocker.conf"
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DNSMASQ_DROPIN_DIR="$TEST_TMPDIR/dnsmasq.service.d"
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DNSMASQ_DROPIN="$DNSMASQ_DROPIN_DIR/blocker.conf"
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LAN_IFACE="enp6s0"
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LAN_IP="192.168.1.43"
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FEED="$TEST_TMPDIR/blocklist.hosts"
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LOG_FILE="$TEST_TMPDIR/dnsmasq.log"
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write_dnsmasq_conf
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install_restart_dropin
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printf '\n-- dnsmasq survives starting before the NIC exists --\n'
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_t_file_has "$DNSMASQ_CONF" '^interface=enp6s0$' "listens only on the LAN interface"
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_t_file_has "$DNSMASQ_CONF" '^bind-dynamic$' "binds the address whenever the interface appears"
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if grep -q '^bind-interfaces' "$DNSMASQ_CONF"; then
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_t_fail "bind-interfaces exits with 'unknown interface' when started before the NIC"
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else
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_t_pass "no bind-interfaces"
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fi
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printf '\n-- the drop-in keeps it up without an ordering cycle --\n'
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_t_file_has "$DNSMASQ_DROPIN" '^Restart=always$' "restarts on any exit"
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if grep -qE '^(After|Wants|Requires)=.*network-online' "$DNSMASQ_DROPIN"; then
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_t_fail "network-online ordering cycles with the stock Before=network-online.target"
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else
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_t_pass "no network-online ordering"
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fi
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printf '\n-- blocked names do not leak, DoH is switched off --\n'
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# addn-hosts carries only 0.0.0.0, so dnsmasq forwarded every AAAA query:
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# youtube.com resolved to a real IPv6 address while "blocked".
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_t_file_has "$DNSMASQ_CONF" '^filter-AAAA$' "AAAA answers are stripped (no IPv6 bypass)"
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# Firefox disables its default DoH only on NXDOMAIN, never on 0.0.0.0.
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_t_file_has "$DNSMASQ_CONF" '^local=/use-application-dns.net/$' "the Firefox DoH canary gets NXDOMAIN"
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_t_file_has "$DNSMASQ_CONF" '^address=/dns.google/0.0.0.0$' "DoH bootstrap names are blocked"
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_t_file_has "$DNSMASQ_CONF" '^address=/cloudflare-dns.com/0.0.0.0$' "Cloudflare DoH is blocked"
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printf '\n-- upstream is a reliable public resolver, not the Funbox --\n'
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_t_file_has "$DNSMASQ_CONF" '^server=1.1.1.1$' "1.1.1.1 upstream"
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_t_file_has "$DNSMASQ_CONF" '^server=9.9.9.9$' "9.9.9.9 upstream"
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if grep -q '^server=192.168.1.1$' "$DNSMASQ_CONF"; then
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_t_fail "the Funbox drops ~20% of queries; it must not be the upstream"
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else
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_t_pass "the Funbox is not the upstream"
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fi
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printf '\n%d passed, %d failed\n' "$PASS" "$FAIL"
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[[ $FAIL -eq 0 ]]
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