68 lines
1.4 KiB
Plaintext
68 lines
1.4 KiB
Plaintext
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#!/usr/bin/env bash
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set -euo pipefail
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# Run chromium-browser with temporary per-host routes via eth1.
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# For a passed URL, resolves target host (and www-host variant),
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# adds temporary IPv4 routes via eth1, then removes them on exit.
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VIA_GW="192.168.0.1"
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DEV="eth1"
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ROUTES=()
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cleanup() {
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for ip in "${ROUTES[@]:-}"; do
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sudo ip route del "$ip" via "$VIA_GW" dev "$DEV" >/dev/null 2>&1 || true
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done
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}
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trap cleanup EXIT INT TERM
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extract_host() {
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local url="$1"
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python3 - "$url" <<'PY'
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import sys
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from urllib.parse import urlparse
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u = sys.argv[1]
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p = urlparse(u)
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print((p.hostname or '').strip())
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PY
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}
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add_routes_for_host() {
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local host="$1"
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[[ -z "$host" ]] && return 0
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local ips
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ips=$(getent ahostsv4 "$host" 2>/dev/null | awk '{print $1}' | sort -u || true)
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[[ -z "$ips" ]] && return 0
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while IFS= read -r ip; do
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[[ -z "$ip" ]] && continue
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sudo ip route replace "$ip" via "$VIA_GW" dev "$DEV"
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ROUTES+=("$ip")
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done <<< "$ips"
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}
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TARGET_URL=""
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for arg in "$@"; do
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if [[ "$arg" =~ ^https?:// ]]; then
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TARGET_URL="$arg"
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break
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fi
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done
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if [[ -n "$TARGET_URL" ]]; then
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HOST=$(extract_host "$TARGET_URL")
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if [[ -n "$HOST" ]]; then
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add_routes_for_host "$HOST"
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# add alternate host variant for common redirects
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if [[ "$HOST" == www.* ]]; then
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add_routes_for_host "${HOST#www.}"
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else
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add_routes_for_host "www.$HOST"
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fi
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fi
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fi
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chromium-browser "$@"
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