From dd126b51721b8c2abcbeb8e832e79936a560eb2b Mon Sep 17 00:00:00 2001 From: Chai Feng Date: Mon, 7 Oct 2024 09:30:54 +0800 Subject: [PATCH] init --- .github/workflows/build-and-release.yml | 51 ++ .gitignore | 7 + LICENSE | 674 ++++++++++++++++++++++++ README.md | 94 ++++ build.sh | 225 ++++++++ domain-rules-blocked.txt.example | 1 + domain-rules-direct.txt.example | 4 + domain-rules-proxy.txt.example | 6 + proxy.js | 333 ++++++++++++ 9 files changed, 1395 insertions(+) create mode 100644 .github/workflows/build-and-release.yml create mode 100644 .gitignore create mode 100644 LICENSE create mode 100644 README.md create mode 100755 build.sh create mode 100644 domain-rules-blocked.txt.example create mode 100644 domain-rules-direct.txt.example create mode 100644 domain-rules-proxy.txt.example create mode 100644 proxy.js diff --git a/.github/workflows/build-and-release.yml b/.github/workflows/build-and-release.yml new file mode 100644 index 0000000..6fdee1d --- /dev/null +++ b/.github/workflows/build-and-release.yml @@ -0,0 +1,51 @@ +name: Build and Release Proxy.pac + +on: + push: + branches: + - "main" + schedule: + - cron: "0 0 * * 0" + +jobs: + build-and-release: + runs-on: ubuntu-latest + + steps: + - name: Checkout repository + uses: actions/checkout@v3 + + - name: Set up Node.js + uses: actions/setup-node@v3 + with: + node-version: '16' + + - name: Run build script + run: | + chmod +x ./build.sh + ./build.sh + + - name: Get current date + id: get_date + run: echo "RELEASE_DATE=$(date +'%Y-%m-%d')" >> $GITHUB_ENV + + - name: Create Release + id: create_release + uses: actions/create-release@v1 + env: + GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} + with: + tag_name: "latest" + release_name: "Proxy PAC Release - ${{ env.RELEASE_DATE }}" + draft: false + prerelease: false + + - name: Upload Proxy.pac to Release + uses: actions/upload-release-asset@v1 + env: + GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} + with: + release_id: ${{ steps.create_release.outputs.id }} + asset_path: ./proxy.pac + asset_name: proxy.pac + asset_content_type: application/x-ns-proxy-autoconfig diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..5719d80 --- /dev/null +++ b/.gitignore @@ -0,0 +1,7 @@ +.DS_Store +china.txt +china6.txt +gfwlist.txt +auto-proxy.txt +domain-rules-*.txt +proxy.pac diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/README.md b/README.md new file mode 100644 index 0000000..42701a0 --- /dev/null +++ b/README.md @@ -0,0 +1,94 @@ +# proxy.pac + +This project is designed to help you generate a `proxy.pac` file that can be used for configuring browser or system-wide proxy settings. You can define custom rules to route traffic based on the domains specified in your configuration files. + +## Usage + +1. **Domain Rules Configuration** + + The project includes several example configuration files: + + - `domain-rules-blocked.txt.example` + - `domain-rules-direct.txt.example` + - `domain-rules-proxy.txt.example` + + To use these, create your own versions of these files without the `.example` extension. Each file represents a different proxy behavior: + + - **Blocked**: Domains added to `domain-rules-blocked.txt` will be blocked. + - **Direct**: Domains added to `domain-rules-direct.txt` will bypass the proxy and connect directly. + - **Proxy**: Domains added to `domain-rules-proxy.txt` will use the default proxy. + + Add your domains to the appropriate files, with each domain on a new line. Lines starting with `#` are treated as comments. For example: + + ``` + # Direct connection domains + google.com + example.org + ``` + + You can also create your own custom rule files. The file name should follow the format `domain-rules-.txt`. For example, `domain-rules-companyProxy.txt` will make all domains in that file use the `companyProxy` setting defined in the `proxy.pac`. + +2. **Build the `proxy.pac` File** + + Run the build script to generate the `proxy.pac` file: + + ```sh + ./build.sh + ``` + + This will create the `proxy.pac` file in the project root directory. + +3. **Proxy Configuration** + + The generated `proxy.pac` file uses the following default proxy configurations (note that the default proxy server is `SOCKS5 127.0.0.1:1080`): + + ```javascript + var proxyBehaviors = { + proxy: "SOCKS5 127.0.0.1:1080", // the default proxy + direct: DIRECT, + blocked: "PROXY 0.0.0.0:0", + "http_proxy": "PROXY 127.0.0.1:3128", + "companyProxy": "PROXY 192.168.1.1:8080", // domains list in `domain-rules-companyProxy.txt` will use this proxy setting + }; + ``` + + You can modify these values in the `proxy.pac` file after it's generated, or customize them directly in the script if you need different default settings. Please adjust these proxy settings to match your actual environment and requirements. + +4. **Test** + + If you have Node.js installed, you can run a test to verify your configuration by using the following command: + + ```sh + node proxy.pac test + ``` + + The test code is located at the end of the `proxy.pac` file, for example: + + ```javascript + assertVisitHostWithProxy("com.google"); + assertVisitHostWithProxy("domains.google"); + assertHostWithDefaultAction("www.not-google"); + assertDirectHost("10.3.4.5"); + assertDirectHost("114.114.114.114"); + assertBlockedHost("www.whitehouse.com"); + ``` + +## Example + +To add a domain to be blocked, simply edit `domain-rules-blocked.txt`: + +``` +# Blocked domains +example.com +ads.example.net +``` + +After running `./build.sh`, the generated `proxy.pac` will block access to `example.com` and `ads.example.net`. + +## License + +This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. + +This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the [GNU General Public License](./LICENSE) along with this program. If not, see . diff --git a/build.sh b/build.sh new file mode 100755 index 0000000..41d843c --- /dev/null +++ b/build.sh @@ -0,0 +1,225 @@ +#!/usr/bin/env bash +set -euo pipefail + +IFS='.' read -r __major __minor _ <<< "${BASH_VERSION:-0.0.0}" +if [ "$__major" -lt 4 ] || { [ "$__major" -eq 4 ] && [ "$__minor" -lt 3 ]; }; then + echo "Error: this script requires Bash version 4.3 or higher. Your current version is ${BASH_VERSION:-unknown}." >&2 + echo "" >&2 + echo "$BASH --version" >&2 + "$BASH" --version >&2 + exit 1 +fi + +cd "$(dirname "$0")" + +declare -A files +files[gfwlist.txt]=https://raw.githubusercontent.com/gfwlist/gfwlist/master/gfwlist.txt +files[china.txt]=https://gaoyifan.github.io/china-operator-ip/china.txt +files[china6.txt]=https://gaoyifan.github.io/china-operator-ip/china6.txt + +function cleanup() { + local retval="$?" + if [[ -n "${del_file_on_exit-}" && -f "${del_file_on_exit}" ]]; then + echo "Remove ${del_file_on_exit}" + rm "${del_file_on_exit}" + exit "$retval" + fi +} >&2 +trap cleanup EXIT ERR SIGINT + +for f in "${!files[@]}"; do + del_file_on_exit="$f" + url="${files[$f]}" + if [[ ! -f "$f" ]]; then + if command -v wget &>/dev/null; then + wget -O "$f" "$url" + elif command -v curl &>/dev/null; then + curl --output "$f" "$url" + else + echo "Error: please install wget or curl." + exit 1 + fi + fi +done + +del_file_on_exit=auto-proxy.txt +[ auto-proxy.txt -nt gfwlist.txt ] || base64 -d auto-proxy.txt + +del_file_on_exit= + +domain_segments() { + local domain="$1" + while [[ -n "${domain}" ]]; do + echo "$domain" + [[ "${domain-}" = *.* ]] || break + domain="${domain#*.}" + done +} + +actual="$(domain_segments foo.bar.example.com)" +expected="foo.bar.example.com bar.example.com example.com com" +if [[ "$actual" = "$expected" ]]; then + echo "Fail: test for function domain_segments" + echo " expected: $expected" + echo " actual: $actual" + exit 1 +fi >&2 + +ipv6_to_array_format() { + while IFS= read -r line; do + local ipv6="${line%%/*}" + local prefix="${line##*/}" + + local expanded_ipv6=$(expand_ipv6 "$ipv6") + local full_hex="${expanded_ipv6//:/}" + + echo " [0x${full_hex:0:16}n, 0x${full_hex:16:16}n, ${prefix}], // ${line}" + done +} + +expand_ipv6() { + local ipv6="$1" + local full_ipv6="" + if [[ "$ipv6" == *"::"* ]]; then + local left_part="${ipv6%%::*}" + local right_part="${ipv6##*::}" + + local left_segments=(${left_part//:/ }) + local right_segments=(${right_part//:/ }) + + local num_missing=$(( 8 - ${#left_segments[@]} - ${#right_segments[@]} )) + + for segment in "${left_segments[@]}"; do + full_ipv6+="$(printf "%04x" "0x$segment"):" + done + for ((i=0; i&2 + for file in domain-rules-*.txt; do + rule="${file#domain-rules-}" + rule="${rule%.txt}" + while IFS= read -r domain; do + domain="${domain%%#*}" + domain="${domain// }" + [[ -n "$domain" ]] || continue + domain_rules["$domain"]="$rule"; + done < "$file" + done + + local line item rule parent_rule + while read -r line; do + echo "$line" >&2 + rule= + case "$line" in + (/*) + echo "Skip regrex rul: $line" + ;; + (\!*|\[*) + : comment + ;; + (@@\|\|*) + line="${line#@}" + ;& + (@@\|*) + line="${line#@?|}" + line="${line#*://}" + line="${line%%\%2F*}" + domain="${line%%/*}" + rule=direct + echo "==> direct access: $domain" + ;; + (\|\|*) + line="${line#|}" + ;& + (\|*) + line="${line#|}" + line="${line#*://}" + ;& + ([.a-z0-9]*) + line="${line#.}" + line="${line%%\%2F*}" + domain="${line%%/*}" + domain="${domain#*\**.}" + rule=proxy + echo "==> proxy access: $domain" + ;; + (*) + [[ "$line" =~ ^[[:space:]]*$ ]] || + echo "Skip: $line" + ;; + esac >&2 + [[ -n "${rule}" ]] || continue + [[ -z "${domain_rules[$domain]-}" ]] || continue + parent_rule= + for item in $(domain_segments "$domain"); do + if [[ -n "${domain_rules[$item]-}" ]]; then + parent_rule="${domain_rules[$item]}" + break + fi + done + if [[ -z "$parent_rule" ]] || [[ "$parent_rule" != "$rule" ]]; then + domain_rules["$domain"]="$rule" + fi + done < <(sed '/URL Keywords/,/^!/d' auto-proxy.txt) + + local domain rule parent_rule + declare -a segments + for domain in "${!domain_rules[@]}"; do + rule="${domain_rules[$domain]}" + segments=($(domain_segments "$domain" 2>/dev/null)) + parent_rule= + for item in ${segments[@]:1}; do + parent_rule="${domain_rules[$item]-}" + [[ -z "${parent_rule-}" ]] || break + done + if [[ "${parent_rule-}" = "${rule}" ]]; then + unset "domain_rules[$domain]" + fi + done + + sed -n '1,/ begin of ipv4 networks$/p' "$jsfile" + cat china.txt | + while read -r line; do + while IFS=/ read ip prefix; do + while IFS=. read n1 n2 n3 n4; do + printf " [0x%02x%02x%02x%02x, %s], // %s\n" "${n1:-0}" "${n2:-0}" "${n3:-0}" "${n4:-0}" "$prefix" "$line" + done <<< "$ip" + done <<< "${line}"; + done + sed -n '/ end of ipv4 networks$/,/ begin of ipv6 networks$/p' "$jsfile" + ipv6_to_array_format proxy.pac + +if command -v node &>/dev/null; then + node proxy.pac test +fi +del_file_on_exit= diff --git a/domain-rules-blocked.txt.example b/domain-rules-blocked.txt.example new file mode 100644 index 0000000..cd95d4c --- /dev/null +++ b/domain-rules-blocked.txt.example @@ -0,0 +1 @@ +doubleclick.net diff --git a/domain-rules-direct.txt.example b/domain-rules-direct.txt.example new file mode 100644 index 0000000..c94df18 --- /dev/null +++ b/domain-rules-direct.txt.example @@ -0,0 +1,4 @@ +cn +apple.com +microsoft.com +icloud.com diff --git a/domain-rules-proxy.txt.example b/domain-rules-proxy.txt.example new file mode 100644 index 0000000..ec89486 --- /dev/null +++ b/domain-rules-proxy.txt.example @@ -0,0 +1,6 @@ +tw +us +google.com +facebook.com +twitter.com +x.com diff --git a/proxy.js b/proxy.js new file mode 100644 index 0000000..b097b67 --- /dev/null +++ b/proxy.js @@ -0,0 +1,333 @@ +// -*- mode: javascript; js-indent-level: 2 -*- +// vim: set filetype=javascript tabstop=2 shiftwidth=2 expandtab: + +const direct = "direct"; +const blocked = "blocked"; +const proxy = "proxy"; + +const DIRECT = "DIRECT"; +var proxyBehaviors = { + proxy: "SOCKS5 127.0.0.1:1080", // the default proxy + direct: DIRECT, + blocked: "PROXY 0.0.0.0:0", + "http_proxy": "PROXY 127.0.0.1:3128", + "companyProxy": "PROXY 192.168.1.1:8080", // domains list in `domain-rules-companyProxy.txt` will use this proxy setting +}; +const default_behavior = DIRECT + "; " + proxyBehaviors[proxy]; + +const ipv4Pattern = /^\d{1,3}(\.\d{1,3}){3}$/; +const ipv6Pattern = /^[a-fA-F0-9:]+$/; +function isIpAddress(host) { + return ipv4Pattern.test(host) || ipv6Pattern.test(host); +} + +function isInDirectAccessNetwork(ip) { + return !!findMatchingNetwork(ip, directAccessIPv4Networks, directAccessIPv6Networks); +} + +function ipToNumber(ip) { + const parts = ip.split('.'); + return parts.reduce((acc, part) => (acc << 8) + parseInt(part, 10), 0); +} + +function numberToIp(number) { + return [ + (number >>> 24) & 0xFF, + (number >>> 16) & 0xFF, + (number >>> 8) & 0xFF, + number & 0xFF + ].join('.'); +} + +function ipv6ToTwoNumbers(ip) { + const parts = ip.split(':').map(part => part ? parseInt(part, 16) : 0); + let high = 0n, low = 0n; + + for (let i = 0; i < 4; i++) { + high = (high << 16n) + BigInt(parts[i] || 0); + } + + for (let i = 4; i < 8; i++) { + low = (low << 16n) + BigInt(parts[i] || 0); + } + + return [high, low]; +} + +function twoNumbersToIpv6(high, low) { + const parts = []; + for (let i = 0; i < 4; i++) { + parts.push(((high >> BigInt(48 - 16 * i)) & 0xFFFFn).toString(16)); + } + for (let i = 0; i < 4; i++) { + parts.push(((low >> BigInt(48 - 16 * i)) & 0xFFFFn).toString(16)); + } + return parts.join(':').replace(/(:0{1,4}){2,}/, '::'); +} + +function findMatchingNetwork(ip, networks4, networks6) { + if (ip.includes('.')) { // IPv4 + const ipNumber = ipToNumber(ip); + for (let [network, prefix] of networks4) { + mask = subnetMaks32[prefix] + if ((ipNumber & mask) === (network & mask)) { + return [network, prefix]; + } + } + } else { // IPv6 + const [ipHigh, ipLow] = ipv6ToTwoNumbers(ip); + for (let [networkHigh, networkLow, mask] of networks6) { + if (mask>64) { + maskHigh = 0xffffffffffffffffn; + maskLow = subnetMaks64[mask-64]; + } else { + maskHigh = subnetMaks64[mask]; + maskLow = 0x0000000000000000n; + } + if (((ipHigh & maskHigh) === (networkHigh & maskHigh)) && + ((ipLow & maskLow) === (networkLow & maskLow))) { + return [networkHigh, networkLow, mask]; + } + } + } + return null; +} + +function printMatchingNetwork(ip, networks4, networks6) { + const matchedNetwork = findMatchingNetwork(ip, networks4, networks6); + if (matchedNetwork) { + if (ip.includes('.')) { // IPv4 + const [network, prefixLength] = matchedNetwork; + return `${numberToIp(network)}/${prefixLength}`; + } else { // IPv6 + const [networkHigh, networkLow, prefixLength] = matchedNetwork; + return `${twoNumbersToIpv6(networkHigh, networkLow)}/${prefixLength}`; + } + } else { + return null; + } +} + +const subnetMaks32 = [ + 0x00000000, // 0 + 0x80000000, // 1 + 0xc0000000, // 2 + 0xe0000000, // 3 + 0xf0000000, // 4 + 0xf8000000, // 5 + 0xfc000000, // 6 + 0xfe000000, // 7 + 0xff000000, // 8 + 0xff800000, // 9 + 0xffc00000, // 10 + 0xffe00000, // 11 + 0xfff00000, // 12 + 0xfff80000, // 13 + 0xfffc0000, // 14 + 0xfffe0000, // 15 + 0xffff0000, // 16 + 0xffff8000, // 17 + 0xffffc000, // 18 + 0xffffe000, // 19 + 0xfffff000, // 20 + 0xfffff800, // 21 + 0xfffffc00, // 22 + 0xfffffe00, // 23 + 0xffffff00, // 24 + 0xffffff80, // 25 + 0xffffffc0, // 26 + 0xffffffe0, // 27 + 0xfffffff0, // 28 + 0xfffffff8, // 29 + 0xfffffffc, // 30 + 0xfffffffe, // 31 + 0xffffffff, // 32 +]; + +const subnetMaks64 = [ + 0x0000000000000000n, // 0 + 0x8000000000000000n, // 1 + 0xc000000000000000n, // 2 + 0xe000000000000000n, // 3 + 0xf000000000000000n, // 4 + 0xf800000000000000n, // 5 + 0xfc00000000000000n, // 6 + 0xfe00000000000000n, // 7 + 0xff00000000000000n, // 8 + 0xff80000000000000n, // 9 + 0xffc0000000000000n, // 10 + 0xffe0000000000000n, // 11 + 0xfff0000000000000n, // 12 + 0xfff8000000000000n, // 13 + 0xfffc000000000000n, // 14 + 0xfffe000000000000n, // 15 + 0xffff000000000000n, // 16 + 0xffff800000000000n, // 17 + 0xffffc00000000000n, // 18 + 0xffffe00000000000n, // 19 + 0xfffff00000000000n, // 20 + 0xfffff80000000000n, // 21 + 0xfffffc0000000000n, // 22 + 0xfffffe0000000000n, // 23 + 0xffffff0000000000n, // 24 + 0xffffff8000000000n, // 25 + 0xffffffc000000000n, // 26 + 0xffffffe000000000n, // 27 + 0xfffffff000000000n, // 28 + 0xfffffff800000000n, // 29 + 0xfffffffc00000000n, // 30 + 0xfffffffe00000000n, // 31 + 0xffffffff00000000n, // 32 + 0xffffffff80000000n, // 33 + 0xffffffffc0000000n, // 34 + 0xffffffffe0000000n, // 35 + 0xfffffffff0000000n, // 36 + 0xfffffffff8000000n, // 37 + 0xfffffffffc000000n, // 38 + 0xfffffffffe000000n, // 39 + 0xffffffffff000000n, // 40 + 0xffffffffff800000n, // 41 + 0xffffffffffc00000n, // 42 + 0xffffffffffe00000n, // 43 + 0xfffffffffff00000n, // 44 + 0xfffffffffff80000n, // 45 + 0xfffffffffffc0000n, // 46 + 0xfffffffffffe0000n, // 47 + 0xffffffffffff0000n, // 48 + 0xffffffffffff8000n, // 49 + 0xffffffffffffc000n, // 50 + 0xffffffffffffe000n, // 51 + 0xfffffffffffff000n, // 52 + 0xfffffffffffff800n, // 53 + 0xfffffffffffffc00n, // 54 + 0xfffffffffffffe00n, // 55 + 0xffffffffffffff00n, // 56 + 0xffffffffffffff80n, // 57 + 0xffffffffffffffc0n, // 58 + 0xffffffffffffffe0n, // 59 + 0xfffffffffffffff0n, // 60 + 0xfffffffffffffff8n, // 61 + 0xfffffffffffffffcn, // 62 + 0xfffffffffffffffen, // 63 + 0xffffffffffffffffn, // 64 +]; + +const directAccessIPv4Networks = [ + [0xC0A80000, 16], // 192.168.0.0/16 + [0x0A000000, 8], // 10.0.0.0/8 + [0xAC100000, 12], // 172.16.0.0/12 + [0x7F000000, 8], // 127.0.0.0/8 (Loopback) + [0xA9FE0000, 16], // 169.254.0.0/16 (Link Local) + [0x64400000, 10], // 100.64.0.0/10 (Carrier-grade NAT) + // begin of ipv4 networks + // end of ipv4 networks +]; + +const directAccessIPv6Networks = [ + [0x0000000000000000n, 0x0000000000000000n, 128], // ::/128 (Unspecified Address) + [0x0000000000000000n, 0x0000000000000001n, 128], // ::1/128 (Loopback Address) + [0x20010db800000000n, 0x0000000000000000n, 32], // 2001:db8::/32 (Documentation Address) + [0xfc00000000000000n, 0x0000000000000000n, 7], // fc00::/7 (Unique Local Address) + [0xff00000000000000n, 0x0000000000000000n, 8], // ff00::/8 (Multicast Address) + [0x2001000000000000n, 0x0000000000000000n, 16], // 2001::/16 (Teredo Address) + [0xfe80000000000000n, 0x0000000000000000n, 10], // fe80::/10 (Link-Local Address) + // begin of ipv6 networks + // end of ipv6 networks +]; + +const proxyRules = { + "local": direct, + "114.114.114.114": direct, + "whitehouse.com": blocked, + "google": proxy, + // begin of proxy rules + // end of proxy rules +}; + +function FindProxyForURL(url, host) { + if (isIpAddress(host)) { + if(isInDirectAccessNetwork(host)) { + return DIRECT; + } else { + var action = proxyRules[host]; + if (action !== undefined) { + return proxyBehaviors[action] || default_behavior; + } + return default_behavior; + } + } + + while (true) { + var action = proxyRules[host]; + if (action !== undefined) { + return proxyBehaviors[action] || default_behavior; + } + var nextDot = host.indexOf("."); + if (nextDot === -1) { + break; + } + host = host.substring(nextDot + 1); + } + var remote_ip = undefined; + if(typeof dnsResolveEx == 'function') { + remote_ip = dnsResolveEx(host); + } else if(typeof dnsResolve == 'function') { + remote_ip = dnsResolve(host); + } + if(remote_ip !== undefined && isInDirectAccessNetwork(remote_ip)) { + return DIRECT + } + return default_behavior; +} + +if (typeof process !== 'undefined' && process.argv.includes('test')) { + function assertNetwork(ip, expected) { + const result = printMatchingNetwork(ip, directAccessIPv4Networks, directAccessIPv6Networks); + if (result === expected) { + console.log(`OK: Test for ${ip} passed.`); + } else { + console.log(`Failed: Test for ${ip} failed. Expected: ${expected}, but got: ${result}`); + } + } + + function assertProxyBehavior(host, expected) { + const result = FindProxyForURL('', host); + if (result === expected) { + console.log(`OK: Test for ${host} => ${expected} passed.`); + } else { + console.log(`Failed: Test for ${host} failed. Expected: ${expected}, but got: ${result}`); + } + } + + function assertVisitHostWithProxy(host) { + assertProxyBehavior(host, proxyBehaviors[proxy]); + } + + function assertHostWithDefaultAction(host) { + assertProxyBehavior(host, default_behavior); + } + + function assertDirectHost(host) { + assertProxyBehavior(host, proxyBehaviors[direct]); + } + + function assertBlockedHost(host) { + assertProxyBehavior(host, proxyBehaviors[blocked]); + } + + function runTests() { + assertNetwork("192.168.1.10", "192.168.0.0/16"); + assertNetwork("1.1.1.1", null); + assertNetwork("172.19.1.1", "172.16.0.0/12"); + assertNetwork("2001:0db8:85a3:0000:0000:8a2e:0370:7334", "2001:db8::/32"); + assertNetwork("fe80::f0:c6b3:c766:9b1e", "fe80::/10"); + assertVisitHostWithProxy("com.google"); + assertVisitHostWithProxy("domains.google"); + assertHostWithDefaultAction("www.not-google"); + assertDirectHost("10.3.4.5"); + assertDirectHost("114.114.114.114"); + assertBlockedHost("www.whitehouse.com"); + } + + runTests(); +}