First full working version.

This commit is contained in:
Kiyomichi Kosaka 2025-08-09 18:09:37 +02:00
commit a543458658
23 changed files with 3238 additions and 0 deletions

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.githooks/install-hooks.sh Executable file
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#!/bin/bash
# Script to install git hooks
HOOK_DIR="$(git rev-parse --git-dir)/hooks"
SCRIPT_DIR="$(dirname "$0")"
echo "Installing git hooks..."
# Copy pre-commit hook
if [ -f "$SCRIPT_DIR/pre-commit" ]; then
cp "$SCRIPT_DIR/pre-commit" "$HOOK_DIR/pre-commit"
chmod +x "$HOOK_DIR/pre-commit"
echo "✓ Installed pre-commit hook"
else
echo "✗ pre-commit hook not found"
exit 1
fi
echo "✅ Git hooks installed successfully!"
echo
echo "To bypass hooks for a commit, use: git commit --no-verify"
echo "To uninstall hooks, delete files in: $HOOK_DIR"

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#!/bin/bash
set -e
echo "🚀 Running pre-commit checks..."
# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color
# Function to print colored output
print_status() {
echo -e "${GREEN}✓${NC} $1"
}
print_error() {
echo -e "${RED}✗${NC} $1"
}
print_warning() {
echo -e "${YELLOW}⚠${NC} $1"
}
# Check if cargo is available
if ! command -v cargo &> /dev/null; then
print_error "Cargo is not installed or not in PATH"
exit 1
fi
# Check for staged Rust files
staged_rust_files=$(git diff --cached --name-only --diff-filter=ACM | grep -E '\.(rs)$' || true)
if [ -z "$staged_rust_files" ]; then
print_warning "No Rust files staged for commit"
exit 0
fi
echo "Staged Rust files:"
echo "$staged_rust_files"
echo
# 1. Check formatting
echo "📝 Checking code formatting..."
if ! cargo fmt -- --check; then
print_error "Code formatting check failed!"
echo "Run 'cargo fmt' to fix formatting issues"
exit 1
fi
print_status "Code formatting is correct"
# 2. Run Clippy
echo "📎 Running Clippy linter..."
if ! cargo clippy --all-features --all-targets -- -D warnings; then
print_error "Clippy found issues!"
echo "Fix the issues above or run 'cargo clippy --fix' for automatic fixes"
exit 1
fi
print_status "Clippy checks passed"
# 3. Run tests
echo "🧪 Running tests..."
if ! cargo test --all-features; then
print_error "Tests failed!"
echo "Fix failing tests before committing"
exit 1
fi
print_status "All tests passed"
# 4. Check for security vulnerabilities (optional - only if cargo-audit is installed)
if command -v cargo-audit &> /dev/null; then
echo "🔒 Running security audit..."
if ! cargo audit; then
print_error "Security vulnerabilities found!"
echo "Review and fix security issues before committing"
exit 1
fi
print_status "Security audit passed"
else
print_warning "cargo-audit not installed. Run 'cargo install cargo-audit' to enable security checks"
fi
# 5. Check that the project builds
echo "🔨 Building project..."
if ! cargo build --all-features; then
print_error "Build failed!"
exit 1
fi
print_status "Build successful"
echo
echo -e "${GREEN}🎉 All pre-commit checks passed!${NC}"
echo "Proceeding with commit..."

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.github/workflows/ci.yml vendored Normal file
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name: CI
on:
push:
branches: [ main ]
pull_request:
branches: [ main ]
env:
CARGO_TERM_COLOR: always
jobs:
test:
name: Test
runs-on: ubuntu-latest
strategy:
matrix:
rust:
- stable
- beta
- nightly
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@master
with:
toolchain: ${{ matrix.rust }}
- uses: Swatinem/rust-cache@v2
- name: Run tests
run: cargo test --all-features
fmt:
name: Rustfmt
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@stable
with:
components: rustfmt
- name: Check formatting
run: cargo fmt --all -- --check
clippy:
name: Clippy
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@stable
with:
components: clippy
- uses: Swatinem/rust-cache@v2
- name: Run clippy
run: cargo clippy --all-features --all-targets -- -D warnings
security_audit:
name: Security Audit
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: rustsec/audit-check@v1.4.1
with:
token: ${{ secrets.GITHUB_TOKEN }}
coverage:
name: Coverage
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@stable
with:
components: llvm-tools-preview
- uses: Swatinem/rust-cache@v2
- name: Install cargo-llvm-cov
uses: taiki-e/install-action@cargo-llvm-cov
- name: Generate coverage
run: cargo llvm-cov --all-features --workspace --lcov --output-path lcov.info
- name: Upload coverage to Codecov
uses: codecov/codecov-action@v3
with:
files: lcov.info
fail_ci_if_error: true

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name: Release
on:
push:
tags:
- 'v*'
env:
CARGO_TERM_COLOR: always
jobs:
build:
name: Build
strategy:
matrix:
os: [ubuntu-latest, windows-latest, macos-latest]
include:
- os: ubuntu-latest
target: x86_64-unknown-linux-gnu
artifact_name: nettest
asset_name: nettest-linux-x86_64
- os: windows-latest
target: x86_64-pc-windows-msvc
artifact_name: nettest.exe
asset_name: nettest-windows-x86_64.exe
- os: macos-latest
target: x86_64-apple-darwin
artifact_name: nettest
asset_name: nettest-macos-x86_64
runs-on: ${{ matrix.os }}
steps:
- uses: actions/checkout@v4
- uses: dtolnay/rust-toolchain@stable
with:
targets: ${{ matrix.target }}
- uses: Swatinem/rust-cache@v2
- name: Build
run: cargo build --release --target ${{ matrix.target }}
- name: Upload artifact
uses: actions/upload-artifact@v3
with:
name: ${{ matrix.asset_name }}
path: target/${{ matrix.target }}/release/${{ matrix.artifact_name }}
release:
name: Release
needs: build
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: Download artifacts
uses: actions/download-artifact@v3
- name: Create Release
uses: softprops/action-gh-release@v1
with:
files: |
nettest-linux-x86_64/nettest
nettest-windows-x86_64.exe/nettest.exe
nettest-macos-x86_64/nettest
body_path: CHANGELOG.md
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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.gitignore vendored Normal file
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# Rust artifacts
/target/
Cargo.lock
# IDE and editor files
.vscode/
.idea/
*.swp
*.swo
*~
.DS_Store
# OS generated files
Thumbs.db
ehthumbs.db
Desktop.ini
$RECYCLE.BIN/
# Logs
*.log
# Runtime data
pids
*.pid
*.seed
*.pid.lock
# Coverage directory used by tools like istanbul
coverage/
*.lcov
# nyc test coverage
.nyc_output
# Dependency directories
node_modules/
# Optional npm cache directory
.npm
# Environment variables
.env
.env.local
.env.development.local
.env.test.local
.env.production.local
# Flamegraph output
flamegraph.svg
perf.data*
# MacOS
.DS_Store
.AppleDouble
.LSOverride
Icon
# Temporary files
*.tmp
*.temp
# Backup files
*.bak
*.backup
# Test artifacts
test-results/
test-output/
# Benchmarks
criterion/

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.pre-commit-config.yaml Normal file
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repos:
- repo: https://github.com/pre-commit/pre-commit-hooks
rev: v4.4.0
hooks:
- id: trailing-whitespace
- id: end-of-file-fixer
- id: check-yaml
- id: check-toml
- id: check-json
- id: check-merge-conflict
- id: check-case-conflict
- id: check-added-large-files
args: ['--maxkb=1000']
- id: detect-private-key
- repo: https://github.com/doublify/pre-commit-rust
rev: v1.0
hooks:
- id: fmt
args: ['--verbose', '--']
- id: cargo-check
args: ['--all-features']
- id: clippy
args: ['--all-features', '--all-targets', '--', '-D', 'warnings']
- repo: local
hooks:
- id: cargo-test
name: cargo test
entry: cargo test --all-features
language: system
types: [rust]
pass_filenames: false
- id: cargo-audit
name: cargo audit
entry: bash -c 'if command -v cargo-audit &> /dev/null; then cargo audit; else echo "cargo-audit not installed, skipping security audit"; fi'
language: system
types: [rust]
pass_filenames: false

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Cargo.toml Normal file
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[package]
name = "nettest"
version = "0.1.0"
edition = "2021"
rust-version = "1.70"
authors = ["Network Test Tool"]
description = "A comprehensive network connectivity and DNS testing CLI tool"
license = "MIT OR Apache-2.0"
repository = "https://github.com/example/nettest"
keywords = ["network", "dns", "testing", "connectivity", "cli"]
categories = ["command-line-utilities", "network-programming"]
[[bin]]
name = "nettest"
path = "src/main.rs"
[dependencies]
clap = { version = "4.4", features = ["derive"] }
tokio = { version = "1.0", features = ["full"] }
trust-dns-resolver = "0.23"
trust-dns-client = "0.23"
socket2 = "0.5"
pnet = "0.34"
anyhow = "1.0"
thiserror = "1.0"
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0"
log = "0.4"
env_logger = "0.10"
colored = "2.0"
indicatif = "0.17"
rand = "0.8"
futures = "0.3"
libc = "0.2"
[dev-dependencies]
tokio-test = "0.4"
criterion = "0.5"
proptest = "1.0"
pretty_assertions = "1.0"
[lints.clippy]
all = { level = "warn", priority = -1 }
pedantic = { level = "warn", priority = -1 }
# Allow some pedantic lints that can be overly strict
missing_errors_doc = "allow"
missing_panics_doc = "allow"
module_name_repetitions = "allow"
must_use_candidate = "allow"
return_self_not_must_use = "allow"
# Allow multiple crate versions (common in dependency trees)
multiple_crate_versions = "allow"
# Allow some formatting preferences
uninlined_format_args = "allow"
# Allow some code style preferences
use_self = "allow"
wildcard_imports = "allow"
# Allow missing const for builder patterns
missing_const_for_fn = "allow"
# Allow casting precision loss for statistical calculations
cast_precision_loss = "allow"
# Allow redundant closures for clarity
redundant_closure = "allow"
# Allow inefficient to_string for readability
inefficient_to_string = "allow"
# Allow ignored unit patterns
ignored_unit_patterns = "allow"
# Allow needless borrows for readability
needless_borrows_for_generic_args = "allow"
# Allow match same arms for clear documentation
match_same_arms = "allow"
# Allow redundant closures for method calls
redundant_closure_for_method_calls = "allow"
# Allow functions with many lines for complex logic
too_many_lines = "allow"
# Allow single match else patterns
single_match_else = "allow"
# Allow redundant pattern matching for clarity
redundant_pattern_matching = "allow"
# Allow unused self in methods that may need it later
unused_self = "allow"
# Allow single component path imports for clarity
single_component_path_imports = "allow"
# Allow complex boolean expressions in tests
overly_complex_bool_expr = "allow"
# Allow map_unwrap_or patterns
map_unwrap_or = "allow"
# Allow collapsible else if patterns
collapsible_else_if = "allow"

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README.md Normal file
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# NetTest - Network Connectivity Testing Tool
A comprehensive command-line tool written in Rust for testing network connectivity and DNS resolution across various dimensions.
## Features
### Network Testing
- **IPv4 and IPv6 support** - Test connectivity using both IP versions
- **Multiple protocols** - Support for TCP, UDP, and ICMP
- **Port testing** - Test common ports and custom port ranges
- **Timeout configuration** - Configurable timeouts for all tests
### MTU Discovery
- **Binary search MTU discovery** - Efficiently find the maximum MTU size
- **Common MTU testing** - Test standard MTU sizes (68, 576, 1280, 1500, 4464, 9000)
- **Custom range testing** - Test specific MTU ranges
- **IPv4 and IPv6 support** - MTU discovery for both IP versions
### DNS Testing
- **Comprehensive record types** - A, AAAA, MX, NS, TXT, CNAME, SOA, PTR, and more
- **Multiple DNS servers** - Test against Google, Cloudflare, Quad9, OpenDNS, and others
- **TCP and UDP queries** - Support for both DNS transport protocols
- **Large query testing** - Test handling of large DNS responses
- **International domains** - Support for IDN (Internationalized Domain Names)
### Domain Category Testing
- **Normal websites** - Test legitimate, commonly used sites
- **Ad networks** - Test advertising and tracking domains
- **Spam domains** - Test temporary email and spam-associated domains
- **Adult content** - Test adult content sites (often filtered)
- **Malicious domains** - Test known malicious/phishing domains
- **Social media** - Test major social media platforms
- **Streaming services** - Test video and music streaming sites
- **Gaming platforms** - Test gaming services and platforms
- **News websites** - Test major news and media sites
### DNS Filtering Analysis
- **Filter effectiveness** - Analyze how well DNS filtering is working
- **Category-based analysis** - See which categories are being blocked
- **Detailed reporting** - Get statistics on resolution success rates
## Installation
```bash
# Clone the repository
git clone <repository-url>
cd nettest
# Build the project
cargo build --release
# Install globally (optional)
cargo install --path .
```
## Usage
### Basic Commands
```bash
# Run comprehensive tests on a target
nettest full google.com
# Test TCP connectivity
nettest network tcp google.com --port 80
# Test UDP connectivity
nettest network udp 8.8.8.8 --port 53
# Ping test
nettest network ping google.com --count 4
# Test common ports
nettest network ports google.com --protocol tcp
# DNS query
nettest dns query google.com --record-type a
# Test DNS servers
nettest dns servers google.com
# Test domain categories
nettest dns categories --category normal
# MTU discovery
nettest mtu discover google.com
# Test common MTU sizes
nettest mtu common google.com
```
### Advanced Options
```bash
# Specify IP version
nettest network tcp google.com --ip-version v4
nettest network tcp google.com --ip-version v6
nettest network tcp google.com --ip-version both
# Custom timeout
nettest --timeout 10 network tcp google.com
# JSON output
nettest --json dns query google.com
# Verbose logging
nettest --verbose full google.com
# DNS query with specific server
nettest dns query google.com --server 8.8.8.8:53 --tcp
# Custom MTU range
nettest mtu range google.com --min 1000 --max 1500
```
### Domain Category Testing
Test different categories of domains to analyze DNS filtering:
```bash
# Test normal websites
nettest dns categories --category normal
# Test ad networks
nettest dns categories --category ads
# Test all categories
nettest dns categories --category all
# DNS filtering effectiveness
nettest dns filtering
```
### Comprehensive Testing
The `full` command runs a comprehensive suite of tests:
```bash
# Full test suite for a domain
nettest full example.com
# Full test with specific IP version
nettest full example.com --ip-version v4
```
This includes:
- TCP and UDP connectivity tests
- ICMP ping tests
- MTU discovery
- DNS resolution tests
- DNS server tests
## Output Formats
### Human-readable (default)
Colored, formatted output suitable for terminal viewing.
### JSON
Machine-readable JSON output for integration with other tools:
```bash
nettest --json dns query google.com
```
## Requirements
- Rust 1.70 or later
- Root/administrator privileges may be required for:
- ICMP ping tests
- Raw socket operations
- MTU discovery
## Testing
Run the test suite:
```bash
# Unit tests
cargo test
# Integration tests
cargo test --test integration_tests
# All tests with verbose output
cargo test -- --nocapture
```
## Architecture
The tool is organized into several modules:
- **cli** - Command-line argument parsing and interface
- **network** - TCP, UDP, and ICMP connectivity testing
- **dns** - DNS resolution and query testing
- **mtu** - MTU discovery and testing
- **utils** - Common utilities and error handling
## Security Considerations
This tool is designed for defensive security testing and network diagnostics. It:
- Tests legitimate connectivity to verify network functionality
- Analyzes DNS filtering effectiveness
- Discovers network path characteristics
- Does not attempt to exploit or attack systems
- Respects rate limits and timeouts
## License
[Add your license here]
## Contributing
[Add contribution guidelines here]

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rustfmt.toml Normal file
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# Stable Rust rustfmt configuration
max_width = 100
hard_tabs = false
tab_spaces = 4
newline_style = "Unix"
use_small_heuristics = "Default"
edition = "2021"
merge_derives = true
use_try_shorthand = false
use_field_init_shorthand = false
force_explicit_abi = true
reorder_imports = true
reorder_modules = true
remove_nested_parens = true

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src/cli/mod.rs Normal file
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use clap::{Parser, Subcommand, ValueEnum};
use std::net::SocketAddr;
#[derive(Parser)]
#[command(name = "nettest")]
#[command(about = "A comprehensive network connectivity and DNS testing CLI tool")]
#[command(version)]
pub struct Cli {
#[command(subcommand)]
pub command: Commands,
#[arg(short, long, global = true)]
pub verbose: bool,
#[arg(short, long, global = true, default_value = "5")]
pub timeout: u64,
#[arg(long, global = true)]
pub json: bool,
}
#[derive(Subcommand)]
pub enum Commands {
#[command(about = "Test network connectivity")]
Network {
#[command(subcommand)]
command: NetworkCommands,
},
#[command(about = "Test DNS resolution")]
Dns {
#[command(subcommand)]
command: DnsCommands,
},
#[command(about = "Discover MTU sizes")]
Mtu {
#[command(subcommand)]
command: MtuCommands,
},
#[command(about = "Run comprehensive tests")]
Full {
target: String,
#[arg(short, long, value_enum, default_value = "both")]
ip_version: IpVersionArg,
},
}
#[derive(Subcommand)]
pub enum NetworkCommands {
#[command(about = "Test TCP connectivity")]
Tcp {
target: String,
#[arg(short, long, default_value = "80")]
port: u16,
#[arg(short, long, value_enum, default_value = "both")]
ip_version: IpVersionArg,
},
#[command(about = "Test UDP connectivity")]
Udp {
target: String,
#[arg(short, long, default_value = "53")]
port: u16,
#[arg(short, long, value_enum, default_value = "both")]
ip_version: IpVersionArg,
},
#[command(about = "Test ICMP ping")]
Ping {
target: String,
#[arg(short, long, default_value = "4")]
count: u32,
#[arg(short, long, value_enum, default_value = "both")]
ip_version: IpVersionArg,
},
#[command(about = "Test common ports")]
Ports {
target: String,
#[arg(short, long, value_enum, default_value = "tcp")]
protocol: ProtocolArg,
#[arg(short, long, value_enum, default_value = "both")]
ip_version: IpVersionArg,
},
}
#[derive(Subcommand)]
pub enum DnsCommands {
#[command(about = "Query specific DNS record")]
Query {
domain: String,
#[arg(short, long, value_enum, default_value = "a")]
record_type: RecordTypeArg,
#[arg(short, long)]
server: Option<SocketAddr>,
#[arg(long)]
tcp: bool,
},
#[command(about = "Test DNS servers")]
Servers {
domain: String,
#[arg(short, long, value_enum, default_value = "a")]
record_type: RecordTypeArg,
},
#[command(about = "Test domain categories")]
Categories {
#[arg(short, long, value_enum)]
category: Option<CategoryArg>,
#[arg(short, long, value_enum, default_value = "a")]
record_type: RecordTypeArg,
},
#[command(about = "Test DNS filtering effectiveness")]
Filtering,
#[command(about = "Show system DNS configuration")]
Debug,
#[command(about = "Comprehensive DNS tests")]
Comprehensive { domain: String },
#[command(about = "Test large DNS queries")]
Large { domain: String },
}
#[derive(Subcommand)]
pub enum MtuCommands {
#[command(about = "Discover MTU for target")]
Discover {
target: String,
#[arg(short, long, value_enum, default_value = "both")]
ip_version: IpVersionArg,
},
#[command(about = "Test common MTU sizes")]
Common {
target: String,
#[arg(short, long, value_enum, default_value = "both")]
ip_version: IpVersionArg,
},
#[command(about = "Test custom MTU range")]
Range {
target: String,
#[arg(short, long, default_value = "68")]
min: u16,
#[arg(short, long, default_value = "1500")]
max: u16,
#[arg(short, long, value_enum, default_value = "both")]
ip_version: IpVersionArg,
},
}
#[derive(Clone, ValueEnum)]
pub enum IpVersionArg {
V4,
V6,
Both,
}
impl IpVersionArg {
pub fn to_versions(&self) -> Vec<crate::network::IpVersion> {
match self {
IpVersionArg::V4 => vec![crate::network::IpVersion::V4],
IpVersionArg::V6 => vec![crate::network::IpVersion::V6],
IpVersionArg::Both => {
vec![crate::network::IpVersion::V4, crate::network::IpVersion::V6]
}
}
}
}
#[derive(Clone, ValueEnum)]
pub enum ProtocolArg {
Tcp,
Udp,
Both,
}
#[derive(Clone, ValueEnum)]
pub enum RecordTypeArg {
A,
AAAA,
MX,
NS,
TXT,
CNAME,
SOA,
PTR,
All,
}
impl RecordTypeArg {
pub fn to_record_type(&self) -> Vec<trust_dns_client::rr::RecordType> {
match self {
RecordTypeArg::A => vec![trust_dns_client::rr::RecordType::A],
RecordTypeArg::AAAA => vec![trust_dns_client::rr::RecordType::AAAA],
RecordTypeArg::MX => vec![trust_dns_client::rr::RecordType::MX],
RecordTypeArg::NS => vec![trust_dns_client::rr::RecordType::NS],
RecordTypeArg::TXT => vec![trust_dns_client::rr::RecordType::TXT],
RecordTypeArg::CNAME => vec![trust_dns_client::rr::RecordType::CNAME],
RecordTypeArg::SOA => vec![trust_dns_client::rr::RecordType::SOA],
RecordTypeArg::PTR => vec![trust_dns_client::rr::RecordType::PTR],
RecordTypeArg::All => vec![
trust_dns_client::rr::RecordType::A,
trust_dns_client::rr::RecordType::AAAA,
trust_dns_client::rr::RecordType::MX,
trust_dns_client::rr::RecordType::NS,
trust_dns_client::rr::RecordType::TXT,
trust_dns_client::rr::RecordType::CNAME,
trust_dns_client::rr::RecordType::SOA,
],
}
}
}
#[derive(Clone, ValueEnum)]
pub enum CategoryArg {
Normal,
Ads,
Spam,
Adult,
Malicious,
Social,
Streaming,
Gaming,
News,
All,
}
impl CategoryArg {
pub fn to_categories(&self) -> Vec<&'static crate::dns::categories::DomainCategory> {
match self {
CategoryArg::Normal => vec![&crate::dns::categories::NORMAL_SITES],
CategoryArg::Ads => vec![&crate::dns::categories::AD_SITES],
CategoryArg::Spam => vec![&crate::dns::categories::SPAM_SITES],
CategoryArg::Adult => vec![&crate::dns::categories::ADULT_SITES],
CategoryArg::Malicious => vec![&crate::dns::categories::MALICIOUS_SITES],
CategoryArg::Social => vec![&crate::dns::categories::SOCIAL_MEDIA],
CategoryArg::Streaming => vec![&crate::dns::categories::STREAMING_SITES],
CategoryArg::Gaming => vec![&crate::dns::categories::GAMING_SITES],
CategoryArg::News => vec![&crate::dns::categories::NEWS_SITES],
CategoryArg::All => crate::dns::categories::ALL_CATEGORIES.iter().collect(),
}
}
}

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use super::DnsTest;
use crate::utils::TestResult;
use trust_dns_client::rr::RecordType;
#[derive(Clone)]
pub struct DomainCategory {
pub name: &'static str,
pub domains: &'static [&'static str],
pub description: &'static str,
}
pub const NORMAL_SITES: DomainCategory = DomainCategory {
name: "Normal Sites",
domains: &[
"google.com",
"github.com",
"stackoverflow.com",
"wikipedia.org",
"microsoft.com",
"apple.com",
"amazon.com",
"cloudflare.com",
"mozilla.org",
"rust-lang.org",
],
description: "Legitimate, commonly used websites",
};
pub const AD_SITES: DomainCategory = DomainCategory {
name: "Ad Networks",
domains: &[
"doubleclick.net",
"googlesyndication.com",
"googleadservices.com",
"facebook.com",
"googletagmanager.com",
"amazon-adsystem.com",
"adsystem.amazon.com",
"outbrain.com",
"taboola.com",
"criteo.com",
],
description: "Advertising networks and tracking domains",
};
pub const SPAM_SITES: DomainCategory = DomainCategory {
name: "Known Spam Domains",
domains: &[
// Using domains from known spam lists (these should be blocked by many DNS filters)
"guerrillamail.com",
"10minutemail.com",
"tempmail.org",
"mailinator.com",
"spam4.me",
"trashmail.com",
"yopmail.com",
"tempinbox.com",
"throwaway.email",
"temp-mail.org",
],
description: "Temporary email services often associated with spam",
};
pub const ADULT_SITES: DomainCategory = DomainCategory {
name: "Adult Content",
domains: &[
// Using well-known adult sites that are often blocked by family filters
// These are legitimate businesses but often filtered
"pornhub.com",
"xvideos.com",
"xnxx.com",
"redtube.com",
"youporn.com",
"tube8.com",
"xtube.com",
"spankbang.com",
"xhamster.com",
"beeg.com",
],
description: "Adult content websites often blocked by family filters",
};
pub const MALICIOUS_SITES: DomainCategory = DomainCategory {
name: "Known Malicious Domains",
domains: &[
// Using domains from threat intelligence feeds (these should be blocked)
// Note: These might not resolve or might be sinkholed
"malware.testcategory.com",
"phishing.testcategory.com",
"badware.com",
"example-malware.com",
"test-phishing.com",
"fake-bank-site.com",
"malicious-download.com",
"virus-test.com",
"trojan-test.com",
"ransomware-test.com",
],
description: "Test domains for malicious content detection",
};
pub const SOCIAL_MEDIA: DomainCategory = DomainCategory {
name: "Social Media",
domains: &[
"facebook.com",
"twitter.com",
"instagram.com",
"linkedin.com",
"youtube.com",
"tiktok.com",
"snapchat.com",
"pinterest.com",
"reddit.com",
"discord.com",
],
description: "Social media platforms",
};
pub const STREAMING_SITES: DomainCategory = DomainCategory {
name: "Streaming Services",
domains: &[
"netflix.com",
"hulu.com",
"disney.com",
"primevideo.com",
"spotify.com",
"twitch.tv",
"youtube.com",
"crunchyroll.com",
"funimation.com",
"hbomax.com",
],
description: "Video and music streaming services",
};
pub const GAMING_SITES: DomainCategory = DomainCategory {
name: "Gaming Platforms",
domains: &[
"steam.com",
"epicgames.com",
"battle.net",
"origin.com",
"uplay.com",
"roblox.com",
"minecraft.net",
"ea.com",
"activision.com",
"nintendo.com",
],
description: "Gaming platforms and services",
};
pub const NEWS_SITES: DomainCategory = DomainCategory {
name: "News Websites",
domains: &[
"cnn.com",
"bbc.com",
"reuters.com",
"nytimes.com",
"washingtonpost.com",
"theguardian.com",
"npr.org",
"ap.org",
"bloomberg.com",
"wsj.com",
],
description: "News and media websites",
};
pub const ALL_CATEGORIES: &[DomainCategory] = &[
NORMAL_SITES,
AD_SITES,
SPAM_SITES,
ADULT_SITES,
MALICIOUS_SITES,
SOCIAL_MEDIA,
STREAMING_SITES,
GAMING_SITES,
NEWS_SITES,
];
pub async fn test_domain_category(
category: &DomainCategory,
record_type: RecordType,
) -> Vec<TestResult> {
let mut results = Vec::new();
for &domain in category.domains {
let test = DnsTest::new(domain.to_string(), record_type);
// Use appropriate testing method based on category type
let mut test_result = match category.name {
"Known Malicious Domains" => test.run_security_test().await,
"Ad Networks" | "Known Spam Domains" | "Adult Content" => {
test.run_filtering_test().await
}
_ => test.run().await,
};
test_result.test_name = format!("{} - {} ({:?})", category.name, domain, record_type);
results.push(test_result);
}
results
}
pub async fn test_all_categories(record_type: RecordType) -> Vec<TestResult> {
let mut results = Vec::new();
for category in ALL_CATEGORIES {
let category_results = test_domain_category(category, record_type).await;
results.extend(category_results);
}
results
}
pub async fn comprehensive_category_test() -> Vec<TestResult> {
let mut results = Vec::new();
// Test A records for all categories
results.extend(test_all_categories(RecordType::A).await);
// Test AAAA records for normal sites only (to avoid too many tests)
results.extend(test_domain_category(&NORMAL_SITES, RecordType::AAAA).await);
// Test MX records for normal sites
results.extend(test_domain_category(&NORMAL_SITES, RecordType::MX).await);
results
}
pub async fn test_dns_filtering_effectiveness() -> Vec<TestResult> {
let mut results = Vec::new();
// Test if DNS filtering is working by checking resolution of different categories
let filter_test_categories = [
(&AD_SITES, "Ad blocking test"),
(&SPAM_SITES, "Spam filtering test"),
(&ADULT_SITES, "Adult content filtering test"),
(&MALICIOUS_SITES, "Malware filtering test"),
];
for (category, test_name) in &filter_test_categories {
let category_results = test_domain_category(category, RecordType::A).await;
// Analyze results based on category type
let total_domains = category_results.len();
let (blocked_domains, resolved_domains, concerning_domains) = if category.name
== "Known Malicious Domains"
{
// For malicious domains, categorize the results
let dns_blocked = category_results
.iter()
.filter(|result| result.details.contains("🛡️ BLOCKED"))
.count();
let sinkholed = category_results
.iter()
.filter(|result| result.details.contains("🕳️ SINKHOLED"))
.count();
let total_blocked = dns_blocked + sinkholed;
let concerning = category_results
.iter()
.filter(|result| {
result.details.contains("⚠️ RESOLVED") || result.details.contains("⚠️ MIXED")
})
.count();
let other_resolved = total_domains - total_blocked - concerning;
(total_blocked, other_resolved, concerning)
} else if matches!(
category.name,
"Ad Networks" | "Known Spam Domains" | "Adult Content"
) {
// For filtering categories, count based on filtering results
let dns_filtered = category_results
.iter()
.filter(|result| result.details.contains("🚫 FILTERED"))
.count();
let sinkholed = category_results
.iter()
.filter(|result| result.details.contains("🕳️ SINKHOLED"))
.count();
let total_filtered = dns_filtered + sinkholed;
let accessible = category_results
.iter()
.filter(|result| result.details.contains("📡 ACCESSIBLE"))
.count();
(total_filtered, accessible, 0)
} else {
// For other categories, traditional success/failure counting
let blocked = category_results
.iter()
.filter(|result| !result.success)
.count();
let resolved = total_domains - blocked;
(blocked, resolved, 0)
};
let summary_result = if category.name == "Known Malicious Domains" {
let security_status = if concerning_domains > 0 {
format!(
"⚠️ SECURITY CONCERN: {} potentially malicious domains resolved successfully",
concerning_domains
)
} else if blocked_domains > resolved_domains {
format!(
"🛡️ GOOD SECURITY: {:.1}% of malicious domains blocked",
(blocked_domains as f64 / total_domains as f64) * 100.0
)
} else {
format!(
"⚠️ WEAK FILTERING: Only {:.1}% of malicious domains blocked",
(blocked_domains as f64 / total_domains as f64) * 100.0
)
};
TestResult::new(format!(
"Security Analysis: {} blocked, {} resolved, {} concerning",
blocked_domains, resolved_domains, concerning_domains
))
.success(std::time::Duration::from_millis(0), security_status)
} else {
TestResult::new(format!(
"{}: {} resolved, {} blocked",
test_name, resolved_domains, blocked_domains
))
.success(
std::time::Duration::from_millis(0),
format!(
"Blocking rate: {:.1}%",
(blocked_domains as f64 / total_domains as f64) * 100.0
),
)
};
results.push(summary_result);
results.extend(category_results);
}
results
}
/// Provide explanation of what DNS filtering results mean
pub fn explain_dns_filtering_results() -> String {
r#"
DNS FILTERING ANALYSIS EXPLANATION:
🛡 BLOCKED results for malicious domains = SECURITY SUCCESS
- Domain was blocked at DNS level (good!)
- Possible blocking levels: Router, ISP, DNS service (Cloudflare, Quad9), OS
🕳 SINKHOLED results = ADVANCED FILTERING SUCCESS
- Domain redirected to harmless "sinkhole" IP addresses
- Common sinkholes: 0.0.0.0, 127.0.0.1, router IPs
- More sophisticated than simple blocking
RESOLVED results for malicious domains = POTENTIAL SECURITY CONCERN
- Domain resolved to real IP addresses
- Could indicate: No filtering, outdated blocklists, or domain not yet flagged
PARTIAL SINKHOLE = MIXED FILTERING
- Some IPs sinkholed, others real (inconsistent filtering)
For other categories (Adult, Ads, etc.):
📡 ACCESSIBLE = Normal (expected behavior without filtering)
🚫 FILTERED = Content filtering active (family filters, ad blockers, etc.)
🕳 SINKHOLED = Advanced filtering (DNS redirect to safe IPs)
Common sinkhole IP addresses:
0.0.0.0 - Universal "null route"
127.0.0.1 - Localhost redirect
192.168.1.1 - Router redirect
146.112.61.104/105 - OpenDNS sinkholes
198.105.232.6/7 - Quad9 sinkholes
185.228.168.10 - CleanBrowsing sinkholes
"#
.to_string()
}

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src/dns/mod.rs Normal file
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use crate::utils::{measure_time, NetworkError, Result, TestResult};
use std::net::{IpAddr, SocketAddr};
use std::str::FromStr;
use std::time::Duration;
use tokio::net::TcpStream;
use tokio::time::timeout;
use trust_dns_client::rr::{Name, RData, RecordData, RecordType};
use trust_dns_resolver::config::*;
use trust_dns_resolver::system_conf;
use trust_dns_resolver::TokioAsyncResolver;
pub mod categories;
pub mod queries;
pub use categories::*;
pub use queries::*;
#[derive(Debug, Clone)]
pub enum ConnectivityStatus {
Reachable,
DnsOnlyNetworkBlocked,
PartiallyReachable,
}
#[derive(Debug, Clone)]
pub struct DnsTest {
pub domain: String,
pub record_type: RecordType,
pub server: Option<SocketAddr>,
pub timeout: Duration,
pub use_tcp: bool,
}
impl DnsTest {
pub fn new(domain: String, record_type: RecordType) -> Self {
Self {
domain,
record_type,
server: None,
timeout: Duration::from_secs(5),
use_tcp: false,
}
}
pub fn with_server(mut self, server: SocketAddr) -> Self {
self.server = Some(server);
self
}
pub fn with_timeout(mut self, timeout: Duration) -> Self {
self.timeout = timeout;
self
}
pub fn with_tcp(mut self, use_tcp: bool) -> Self {
self.use_tcp = use_tcp;
self
}
pub async fn run(&self) -> TestResult {
let protocol = if self.use_tcp { "TCP" } else { "UDP" };
let server_info = self
.server
.map(|s| format!(" via {}", s))
.unwrap_or_default();
let test_name = format!(
"DNS {:?} query for {} ({}{})",
self.record_type, self.domain, protocol, server_info
);
let (duration, result) = measure_time(|| async {
if let Some(server) = self.server {
self.query_specific_server(server).await
} else {
self.query_system_resolver().await
}
})
.await;
match result {
Ok(details) => TestResult::new(test_name).success(duration, details),
Err(error) => TestResult::new(test_name).failure(duration, error),
}
}
pub async fn run_security_test(&self) -> TestResult {
let protocol = if self.use_tcp { "TCP" } else { "UDP" };
let server_info = self
.server
.map(|s| format!(" via {}", s))
.unwrap_or_default();
let test_name = format!(
"DNS {:?} query for {} ({}{})",
self.record_type, self.domain, protocol, server_info
);
let (duration, result) = measure_time(|| async {
if let Some(server) = self.server {
self.query_specific_server(server).await
} else {
self.query_system_resolver().await
}
})
.await;
match result {
Ok(details) => {
// Check if the resolved IPs are sinkholed
let ips = self.extract_ips_from_dns_details(&details);
let sinkhole_analysis = analyze_sinkhole_ips(&ips);
match sinkhole_analysis {
SinkholeAnalysis::FullySinkholed(sinkhole_ips) => {
let sinkhole_list: Vec<String> =
sinkhole_ips.iter().map(|ip| ip.to_string()).collect();
TestResult::new(test_name).success(
duration,
format!(
"🕳️ SINKHOLED (security success): Redirected to sinkhole IPs: {}",
sinkhole_list.join(", ")
),
)
}
SinkholeAnalysis::PartiallySinkholed {
sinkhole_ips,
legitimate_ips,
} => {
let sinkhole_list: Vec<String> =
sinkhole_ips.iter().map(|ip| ip.to_string()).collect();
let legit_list: Vec<String> =
legitimate_ips.iter().map(|ip| ip.to_string()).collect();
TestResult::new(test_name).success(
duration,
format!("⚠️ MIXED RESOLUTION: Sinkholed: {} | Real IPs: {} (partial security concern)",
sinkhole_list.join(", "), legit_list.join(", "))
)
}
SinkholeAnalysis::NotSinkholed(_) => TestResult::new(test_name).success(
duration,
format!("⚠️ RESOLVED (potential security concern): {}", details),
),
}
}
Err(error) => {
// For security tests, DNS resolution failures are considered successes
match error {
NetworkError::DnsResolution(err_msg) => {
let blocking_explanation = analyze_dns_blocking(&err_msg);
TestResult::new(test_name).success(
duration,
format!("🛡️ BLOCKED (security success): {}", blocking_explanation),
)
}
_ => TestResult::new(test_name).failure(duration, error),
}
}
}
}
pub async fn run_filtering_test(&self) -> TestResult {
let protocol = if self.use_tcp { "TCP" } else { "UDP" };
let server_info = self
.server
.map(|s| format!(" via {}", s))
.unwrap_or_default();
let test_name = format!(
"DNS {:?} query for {} ({}{})",
self.record_type, self.domain, protocol, server_info
);
let (duration, result) = measure_time(|| async {
if let Some(server) = self.server {
self.query_specific_server(server).await
} else {
self.query_system_resolver().await
}
})
.await;
match result {
Ok(details) => {
// Check if the resolved IPs are sinkholed
let ips = self.extract_ips_from_dns_details(&details);
let sinkhole_analysis = analyze_sinkhole_ips(&ips);
match sinkhole_analysis {
SinkholeAnalysis::FullySinkholed(sinkhole_ips) => {
let sinkhole_list: Vec<String> =
sinkhole_ips.iter().map(|ip| ip.to_string()).collect();
TestResult::new(test_name).success(
duration,
format!("🕳️ SINKHOLED: Redirected to sinkhole IPs: {} (filtered via DNS redirect)", sinkhole_list.join(", "))
)
}
SinkholeAnalysis::PartiallySinkholed {
sinkhole_ips,
legitimate_ips,
} => {
let sinkhole_list: Vec<String> =
sinkhole_ips.iter().map(|ip| ip.to_string()).collect();
let legit_list: Vec<String> =
legitimate_ips.iter().map(|ip| ip.to_string()).collect();
TestResult::new(test_name).success(
duration,
format!("⚡ PARTIAL SINKHOLE: Sinkholed: {} | Real IPs: {} (partial filtering)",
sinkhole_list.join(", "), legit_list.join(", "))
)
}
SinkholeAnalysis::NotSinkholed(_) => TestResult::new(test_name)
.success(duration, format!("📡 ACCESSIBLE: {}", details)),
}
}
Err(error) => {
// DNS resolution failed - for filtering tests, this is good (blocked)
match error {
NetworkError::DnsResolution(err_msg) => {
let blocking_explanation = analyze_dns_blocking(&err_msg);
TestResult::new(test_name)
.success(duration, format!("🚫 FILTERED: {}", blocking_explanation))
}
_ => TestResult::new(test_name).failure(duration, error),
}
}
}
}
pub async fn run_comprehensive_test(&self) -> TestResult {
let protocol = if self.use_tcp { "TCP" } else { "UDP" };
let server_info = self
.server
.map(|s| format!(" via {}", s))
.unwrap_or_default();
let test_name = format!(
"DNS {:?} query for {} ({}{})",
self.record_type, self.domain, protocol, server_info
);
let (dns_duration, dns_result) = measure_time(|| async {
if let Some(server) = self.server {
self.query_specific_server(server).await
} else {
self.query_system_resolver().await
}
})
.await;
match dns_result {
Ok(dns_details) => {
// DNS resolved, now check actual connectivity
let connectivity_result =
self.check_connectivity_to_resolved_ips(&dns_details).await;
let total_duration = dns_duration + Duration::from_millis(50); // Approximate connectivity check time
match connectivity_result {
ConnectivityStatus::Reachable => {
TestResult::new(test_name).success(
total_duration,
format!("✅ FULLY ACCESSIBLE: {} | Connectivity: Reachable", dns_details)
)
}
ConnectivityStatus::DnsOnlyNetworkBlocked => {
TestResult::new(test_name).success(
total_duration,
format!("🌐 DNS RESOLVES, NETWORK BLOCKED: {} | Traffic blocked at ISP/router level", dns_details)
)
}
ConnectivityStatus::PartiallyReachable => {
TestResult::new(test_name).success(
total_duration,
format!("⚡ PARTIALLY REACHABLE: {} | Some ports blocked", dns_details)
)
}
}
}
Err(error) => match error {
NetworkError::DnsResolution(err_msg) => {
let blocking_explanation = analyze_dns_blocking(&err_msg);
TestResult::new(test_name).success(
dns_duration,
format!("🛡️ DNS BLOCKED: {}", blocking_explanation),
)
}
_ => TestResult::new(test_name).failure(dns_duration, error),
},
}
}
async fn query_system_resolver(&self) -> Result<String> {
// Try to use system DNS configuration first, fall back to default if that fails
let (config, opts) = match system_conf::read_system_conf() {
Ok((config, opts)) => (config, opts),
Err(_) => {
// Fallback to default config if system config cannot be read
eprintln!("Warning: Could not read system DNS config, using default");
(ResolverConfig::default(), ResolverOpts::default())
}
};
let resolver = TokioAsyncResolver::tokio(config, opts);
let name = Name::from_str(&self.domain)
.map_err(|e| NetworkError::DnsResolution(format!("Invalid domain: {}", e)))?;
let response = timeout(self.timeout, async {
match self.record_type {
RecordType::A => {
let lookup = resolver
.ipv4_lookup(name.clone())
.await
.map_err(|e| format!("A lookup failed: {}", e))?;
let ips: Vec<String> = lookup.iter().map(|ip| ip.to_string()).collect();
Ok(format!("A records: {}", ips.join(", ")))
}
RecordType::AAAA => {
let lookup = resolver
.ipv6_lookup(name.clone())
.await
.map_err(|e| format!("AAAA lookup failed: {}", e))?;
let ips: Vec<String> = lookup.iter().map(|ip| ip.to_string()).collect();
Ok(format!("AAAA records: {}", ips.join(", ")))
}
RecordType::MX => {
let lookup = resolver
.mx_lookup(name.clone())
.await
.map_err(|e| format!("MX lookup failed: {}", e))?;
let records: Vec<String> = lookup
.iter()
.map(|mx| format!("{} {}", mx.preference(), mx.exchange()))
.collect();
Ok(format!("MX records: {}", records.join(", ")))
}
RecordType::TXT => {
let lookup = resolver
.txt_lookup(name.clone())
.await
.map_err(|e| format!("TXT lookup failed: {}", e))?;
let records: Vec<String> = lookup.iter().map(|txt| txt.to_string()).collect();
Ok(format!("TXT records: {}", records.join(", ")))
}
RecordType::NS => {
let lookup = resolver
.ns_lookup(name.clone())
.await
.map_err(|e| format!("NS lookup failed: {}", e))?;
let records: Vec<String> = lookup.iter().map(|ns| ns.to_string()).collect();
Ok(format!("NS records: {}", records.join(", ")))
}
RecordType::CNAME => {
let lookup = resolver
.lookup(name.clone(), self.record_type)
.await
.map_err(|e| format!("CNAME lookup failed: {}", e))?;
let records: Vec<String> = lookup
.iter()
.filter_map(|record| {
if let RData::CNAME(cname) = record.clone().into_rdata() {
Some(cname.to_string())
} else {
None
}
})
.collect();
Ok(format!("CNAME records: {}", records.join(", ")))
}
RecordType::SOA => {
let lookup = resolver
.soa_lookup(name.clone())
.await
.map_err(|e| format!("SOA lookup failed: {}", e))?;
let records: Vec<String> = lookup
.iter()
.map(|soa| {
format!(
"{} {} {} {} {} {} {}",
soa.mname(),
soa.rname(),
soa.serial(),
soa.refresh(),
soa.retry(),
soa.expire(),
soa.minimum()
)
})
.collect();
Ok(format!("SOA records: {}", records.join(", ")))
}
RecordType::PTR => {
let lookup = resolver
.lookup(name.clone(), self.record_type)
.await
.map_err(|e| format!("PTR lookup failed: {}", e))?;
let records: Vec<String> = lookup
.iter()
.filter_map(|record| {
if let RData::PTR(ptr) = record.clone().into_rdata() {
Some(ptr.to_string())
} else {
None
}
})
.collect();
Ok(format!("PTR records: {}", records.join(", ")))
}
_ => {
let lookup = resolver
.lookup(name.clone(), self.record_type)
.await
.map_err(|e| format!("Lookup failed: {}", e))?;
let count = lookup.iter().count();
Ok(format!("{:?} records: {} found", self.record_type, count))
}
}
})
.await
.map_err(|_| NetworkError::Timeout)?
.map_err(|_: String| NetworkError::DnsResolution("System resolver failed".to_string()))?;
Ok(response)
}
async fn query_specific_server(&self, server: SocketAddr) -> Result<String> {
// Create a resolver configuration that uses the specific server
let mut config = ResolverConfig::new();
config.add_name_server(trust_dns_resolver::config::NameServerConfig::new(
server,
trust_dns_resolver::config::Protocol::Udp,
));
let opts = ResolverOpts::default();
let resolver = TokioAsyncResolver::tokio(config, opts);
let name = Name::from_str(&self.domain)
.map_err(|e| NetworkError::DnsResolution(format!("Invalid domain: {}", e)))?;
let response = timeout(self.timeout, async {
match self.record_type {
RecordType::A => {
let lookup = resolver
.ipv4_lookup(name.clone())
.await
.map_err(|e| format!("A lookup failed: {}", e))?;
let ips: Vec<String> = lookup.iter().map(|ip| ip.to_string()).collect();
Ok(format!("A records: {}", ips.join(", ")))
}
RecordType::AAAA => {
let lookup = resolver
.ipv6_lookup(name.clone())
.await
.map_err(|e| format!("AAAA lookup failed: {}", e))?;
let ips: Vec<String> = lookup.iter().map(|ip| ip.to_string()).collect();
Ok(format!("AAAA records: {}", ips.join(", ")))
}
_ => {
let lookup = resolver
.lookup(name.clone(), self.record_type)
.await
.map_err(|e| format!("Lookup failed: {}", e))?;
let count = lookup.iter().count();
Ok(format!("{:?} records: {} found", self.record_type, count))
}
}
})
.await
.map_err(|_| NetworkError::Timeout)?
.map_err(|e| NetworkError::DnsResolution(e))?;
Ok(format!("{} (via {})", response, server))
}
async fn check_connectivity_to_resolved_ips(&self, dns_details: &str) -> ConnectivityStatus {
// Extract IP addresses from DNS details string
let ips = self.extract_ips_from_dns_details(dns_details);
if ips.is_empty() {
return ConnectivityStatus::DnsOnlyNetworkBlocked;
}
let mut reachable_count = 0;
let test_ports = [80, 443, 8080]; // Common HTTP/HTTPS ports
for ip in ips.iter().take(2) {
// Test first 2 IPs to avoid too many connections
for &port in &test_ports {
let addr = SocketAddr::new(*ip, port);
if let Ok(_) = timeout(Duration::from_millis(1000), TcpStream::connect(addr)).await
{
reachable_count += 1;
break; // If any port works, IP is reachable
}
}
}
if reachable_count > 0 {
if reachable_count == ips.len().min(2) {
ConnectivityStatus::Reachable
} else {
ConnectivityStatus::PartiallyReachable
}
} else {
ConnectivityStatus::DnsOnlyNetworkBlocked
}
}
fn extract_ips_from_dns_details(&self, dns_details: &str) -> Vec<IpAddr> {
let mut ips = Vec::new();
// Look for patterns like "A records: 1.2.3.4, 5.6.7.8"
if let Some(records_part) = dns_details.split("records: ").nth(1) {
for ip_str in records_part.split(", ") {
if let Ok(ip) = ip_str.trim().parse::<IpAddr>() {
ips.push(ip);
}
}
}
ips
}
}
pub async fn test_common_dns_servers(domain: &str, record_type: RecordType) -> Vec<TestResult> {
let servers = [
"8.8.8.8:53", // Google
"8.8.4.4:53", // Google
"1.1.1.1:53", // Cloudflare
"1.0.0.1:53", // Cloudflare
"9.9.9.9:53", // Quad9
"208.67.222.222:53", // OpenDNS
"208.67.220.220:53", // OpenDNS
];
let mut results = Vec::new();
for server_str in &servers {
if let Ok(server) = server_str.parse::<SocketAddr>() {
let test = DnsTest::new(domain.to_string(), record_type).with_server(server);
results.push(test.run().await);
}
}
results
}
pub async fn test_dns_over_tcp_udp(
domain: &str,
record_type: RecordType,
server: SocketAddr,
) -> Vec<TestResult> {
let mut results = Vec::new();
// UDP test
let udp_test = DnsTest::new(domain.to_string(), record_type)
.with_server(server)
.with_tcp(false);
results.push(udp_test.run().await);
// TCP test
let tcp_test = DnsTest::new(domain.to_string(), record_type)
.with_server(server)
.with_tcp(true);
results.push(tcp_test.run().await);
results
}
/// Analyze DNS blocking to provide detailed explanation of what's happening
fn analyze_dns_blocking(error_msg: &str) -> String {
let error_lower = error_msg.to_lowercase();
if error_lower.contains("nxdomain") || error_lower.contains("name not found") {
"DNS server returned NXDOMAIN (domain doesn't exist or is blocked at DNS level)".to_string()
} else if error_lower.contains("servfail") || error_lower.contains("server failure") {
"DNS server returned SERVFAIL (possibly blocked by DNS filtering service)".to_string()
} else if error_lower.contains("refused") {
"DNS query refused (likely blocked by DNS server policy)".to_string()
} else if error_lower.contains("timeout") {
"DNS query timeout (domain may be sinkholed or filtered)".to_string()
} else if error_lower.contains("connection refused") {
"Connection refused to DNS server (network-level blocking)".to_string()
} else if error_lower.contains("system resolver failed") {
"System DNS resolver blocked the query (OS or network-level filtering)".to_string()
} else {
format!("DNS resolution failed ({})", error_msg)
}
}
/// Analyze IP addresses to detect DNS sinkholing
fn analyze_sinkhole_ips(ips: &[IpAddr]) -> SinkholeAnalysis {
let mut sinkhole_ips = Vec::new();
let mut legitimate_ips = Vec::new();
for &ip in ips {
if is_sinkhole_ip(ip) {
sinkhole_ips.push(ip);
} else {
legitimate_ips.push(ip);
}
}
if !sinkhole_ips.is_empty() && legitimate_ips.is_empty() {
SinkholeAnalysis::FullySinkholed(sinkhole_ips)
} else if !sinkhole_ips.is_empty() {
SinkholeAnalysis::PartiallySinkholed {
sinkhole_ips,
legitimate_ips,
}
} else {
SinkholeAnalysis::NotSinkholed(legitimate_ips)
}
}
/// Check if an IP address is a known sinkhole address
fn is_sinkhole_ip(ip: IpAddr) -> bool {
match ip {
IpAddr::V4(ipv4) => {
let octets = ipv4.octets();
// Common sinkhole addresses
match octets {
[0, 0, 0, 0] => true, // 0.0.0.0 - most common
[127, 0, 0, 1] => true, // 127.0.0.1 - localhost redirect
[127, 0, 0, 2..=255] => true, // 127.x.x.x range
[10, 0, 0, 1] => true, // 10.0.0.1 - router sinkhole
[192, 168, 1, 1] => true, // 192.168.1.1 - router sinkhole
[192, 168, 0, 1] => true, // 192.168.0.1 - router sinkhole
[146, 112, 61, 104] => true, // OpenDNS sinkhole
[146, 112, 61, 105] => true, // OpenDNS sinkhole
[199, 85, 126, 10] => true, // Norton DNS sinkhole
[199, 85, 127, 10] => true, // Norton DNS sinkhole
[208, 69, 38, 170] => true, // OpenDNS phishing block page
[208, 69, 39, 170] => true, // OpenDNS phishing block page
[198, 105, 232, 6] => true, // Quad9 sinkhole
[198, 105, 232, 7] => true, // Quad9 sinkhole
[185, 228, 168, 10] => true, // CleanBrowsing sinkhole
[185, 228, 169, 11] => true, // CleanBrowsing sinkhole
_ => false,
}
}
IpAddr::V6(ipv6) => {
// IPv6 sinkhole addresses
let segments = ipv6.segments();
match segments {
[0, 0, 0, 0, 0, 0, 0, 0] => true, // :: (IPv6 equivalent of 0.0.0.0)
[0, 0, 0, 0, 0, 0, 0, 1] => true, // ::1 (IPv6 localhost)
_ => false,
}
}
}
}
#[derive(Debug, Clone)]
pub enum SinkholeAnalysis {
NotSinkholed(Vec<IpAddr>),
FullySinkholed(Vec<IpAddr>),
PartiallySinkholed {
sinkhole_ips: Vec<IpAddr>,
legitimate_ips: Vec<IpAddr>,
},
}
/// Debug function to show current DNS configuration
pub fn debug_dns_config() -> String {
match system_conf::read_system_conf() {
Ok((config, _opts)) => {
let mut debug_info = vec!["System DNS Configuration:".to_string()];
for name_server in config.name_servers() {
debug_info.push(format!(
" 📡 DNS Server: {} ({})",
name_server.socket_addr,
match name_server.protocol {
Protocol::Udp => "UDP",
Protocol::Tcp => "TCP",
_ => "Other",
}
));
}
debug_info.push(format!(" 🔍 Search domains: {:?}", config.search()));
debug_info.join("\n")
}
Err(e) => format!("❌ Could not read system DNS config: {}", e),
}
}

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use super::DnsTest;
use crate::utils::TestResult;
use trust_dns_client::rr::RecordType;
pub async fn comprehensive_dns_test(domain: &str) -> Vec<TestResult> {
let mut results = Vec::new();
let record_types = [
RecordType::A,
RecordType::AAAA,
RecordType::MX,
RecordType::NS,
RecordType::TXT,
RecordType::CNAME,
RecordType::SOA,
];
for record_type in &record_types {
let test = DnsTest::new(domain.to_string(), *record_type);
results.push(test.run().await);
}
results
}
pub async fn test_large_dns_queries(domain: &str) -> Vec<TestResult> {
let mut results = Vec::new();
// Test with a domain that has large TXT records
let large_txt_domains = [
"_dmarc.google.com",
"google.com", // Often has large TXT records for verification
"_domainkey.google.com",
];
for test_domain in &large_txt_domains {
let test = DnsTest::new(test_domain.to_string(), RecordType::TXT);
results.push(test.run().await);
}
// Test DNSSEC-related records if available
let dnssec_types = [
RecordType::DS,
RecordType::RRSIG,
RecordType::DNSKEY,
RecordType::NSEC,
RecordType::NSEC3,
];
for record_type in &dnssec_types {
let test = DnsTest::new(domain.to_string(), *record_type);
results.push(test.run().await);
}
results
}
pub async fn test_dns_amplification_domains() -> Vec<TestResult> {
// Test domains that might be used in DNS amplification attacks
// These are legitimate tests to check if the resolver handles them properly
let test_domains = [
"isc.org", // Often has large responses
"ripe.net", // Registry with comprehensive records
"version.bind", // Special query
"hostname.bind", // Special query
];
let mut results = Vec::new();
for domain in &test_domains {
let test = DnsTest::new(domain.to_string(), RecordType::TXT);
results.push(test.run().await);
}
results
}
pub async fn test_reverse_dns_lookups() -> Vec<TestResult> {
let mut results = Vec::new();
let test_ips = [
"8.8.8.8", // Google DNS
"1.1.1.1", // Cloudflare DNS
"208.67.222.222", // OpenDNS
];
for ip in &test_ips {
// Convert IP to reverse DNS format
let reverse_domain = if let Ok(addr) = ip.parse::<std::net::Ipv4Addr>() {
let octets = addr.octets();
format!(
"{}.{}.{}.{}.in-addr.arpa",
octets[3], octets[2], octets[1], octets[0]
)
} else {
continue;
};
let test = DnsTest::new(reverse_domain, RecordType::PTR);
results.push(test.run().await);
}
results
}
pub async fn test_international_domains() -> Vec<TestResult> {
let mut results = Vec::new();
// Test internationalized domain names
let international_domains = [
"xn--n3h.com", // ☃.com (snowman emoji)
"xn--e1afmkfd.xn--p1ai", // пример.рф (example.rf in Russian)
"xn--fsq.xn--0zwm56d", // 测试.测试 (test.test in Chinese)
];
for domain in &international_domains {
let test = DnsTest::new(domain.to_string(), RecordType::A);
results.push(test.run().await);
}
results
}
pub async fn test_dns_query_sizes() -> Vec<TestResult> {
let mut results = Vec::new();
// Test queries that might produce different response sizes
let size_test_domains = [
("short.example", "Short domain name"),
(
"very-long-subdomain-name-that-tests-dns-limits.example.com",
"Long domain name",
),
(
"a.b.c.d.e.f.g.h.i.j.k.l.m.n.o.p.q.r.s.t.u.v.w.x.y.z.example.com",
"Deep subdomain",
),
];
for (domain, description) in &size_test_domains {
let mut test_result = DnsTest::new(domain.to_string(), RecordType::A).run().await;
test_result.test_name = format!("DNS query size test: {}", description);
results.push(test_result);
}
results
}

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pub mod cli;
pub mod dns;
pub mod mtu;
pub mod network;
pub mod utils;
pub use cli::*;
pub use dns::*;
pub use mtu::*;
pub use network::*;
pub use utils::*;

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use clap::Parser;
use colored::*;
use env_logger;
use indicatif::{ProgressBar, ProgressStyle};
use nettest::*;
use serde_json;
use std::time::Duration;
#[tokio::main]
async fn main() {
let cli = cli::Cli::parse();
env_logger::Builder::from_default_env()
.filter_level(if cli.verbose {
log::LevelFilter::Info
} else {
log::LevelFilter::Warn
})
.init();
let timeout = Duration::from_secs(cli.timeout);
let results = match cli.command {
cli::Commands::Network { command } => handle_network_command(command, timeout).await,
cli::Commands::Dns { command } => handle_dns_command(command, timeout).await,
cli::Commands::Mtu { command } => handle_mtu_command(command, timeout).await,
cli::Commands::Full { target, ip_version } => {
handle_full_test(target, ip_version, timeout).await
}
};
if cli.json {
print_results_json(&results);
} else {
print_results_human(&results);
}
let failed_tests = results.iter().filter(|r| !r.success).count();
if failed_tests > 0 {
std::process::exit(1);
}
}
async fn handle_network_command(
command: cli::NetworkCommands,
timeout: Duration,
) -> Vec<TestResult> {
match command {
cli::NetworkCommands::Tcp {
target,
port,
ip_version,
} => {
let mut results = Vec::new();
for version in ip_version.to_versions() {
let test = network::NetworkTest::new(
target.clone(),
version,
network::NetworkProtocol::Tcp,
)
.with_port(port)
.with_timeout(timeout);
results.push(test.run().await);
}
results
}
cli::NetworkCommands::Udp {
target,
port,
ip_version,
} => {
let mut results = Vec::new();
for version in ip_version.to_versions() {
let test = network::NetworkTest::new(
target.clone(),
version,
network::NetworkProtocol::Udp,
)
.with_port(port)
.with_timeout(timeout);
results.push(test.run().await);
}
results
}
cli::NetworkCommands::Ping {
target,
count,
ip_version,
} => {
let mut results = Vec::new();
for version in ip_version.to_versions() {
let ping_results = network::ping_test(&target, version, count).await;
results.extend(ping_results);
}
results
}
cli::NetworkCommands::Ports {
target,
protocol,
ip_version,
} => {
let mut results = Vec::new();
for version in ip_version.to_versions() {
match protocol {
cli::ProtocolArg::Tcp => {
let tcp_results = network::test_tcp_common_ports(&target, version).await;
results.extend(tcp_results);
}
cli::ProtocolArg::Udp => {
let udp_results = network::test_udp_common_ports(&target, version).await;
results.extend(udp_results);
}
cli::ProtocolArg::Both => {
let tcp_results = network::test_tcp_common_ports(&target, version).await;
let udp_results = network::test_udp_common_ports(&target, version).await;
results.extend(tcp_results);
results.extend(udp_results);
}
}
}
results
}
}
}
async fn handle_dns_command(command: cli::DnsCommands, timeout: Duration) -> Vec<TestResult> {
match command {
cli::DnsCommands::Query {
domain,
record_type,
server,
tcp,
} => {
let mut results = Vec::new();
for rt in record_type.to_record_type() {
let mut test = dns::DnsTest::new(domain.clone(), rt)
.with_timeout(timeout)
.with_tcp(tcp);
if let Some(server_addr) = server {
test = test.with_server(server_addr);
}
results.push(test.run().await);
}
results
}
cli::DnsCommands::Servers {
domain,
record_type,
} => {
let mut results = Vec::new();
for rt in record_type.to_record_type() {
let server_results = dns::test_common_dns_servers(&domain, rt).await;
results.extend(server_results);
}
results
}
cli::DnsCommands::Categories {
category,
record_type,
} => {
let mut results = Vec::new();
let categories = category
.map(|c| c.to_categories())
.unwrap_or_else(|| dns::categories::ALL_CATEGORIES.iter().collect());
for rt in record_type.to_record_type() {
for cat in &categories {
let cat_results = dns::categories::test_domain_category(cat, rt).await;
results.extend(cat_results);
}
}
results
}
cli::DnsCommands::Filtering => dns::categories::test_dns_filtering_effectiveness().await,
cli::DnsCommands::Debug => {
// Create a debug result showing DNS configuration
let debug_info = dns::debug_dns_config();
vec![TestResult::new("DNS Configuration Debug".to_string())
.success(Duration::from_millis(0), debug_info)]
}
cli::DnsCommands::Comprehensive { domain } => {
dns::queries::comprehensive_dns_test(&domain).await
}
cli::DnsCommands::Large { domain } => dns::queries::test_large_dns_queries(&domain).await,
}
}
async fn handle_mtu_command(command: cli::MtuCommands, _timeout: Duration) -> Vec<TestResult> {
match command {
cli::MtuCommands::Discover { target, ip_version } => {
let mut results = Vec::new();
for version in ip_version.to_versions() {
let result = mtu::full_mtu_discovery(&target, version).await;
results.push(result);
}
results
}
cli::MtuCommands::Common { target, ip_version } => {
let mut results = Vec::new();
for version in ip_version.to_versions() {
let common_results = mtu::test_common_mtu_sizes(&target, version).await;
results.extend(common_results);
}
results
}
cli::MtuCommands::Range {
target,
min,
max,
ip_version,
} => {
let mut results = Vec::new();
for version in ip_version.to_versions() {
let discovery =
mtu::MtuDiscovery::new(target.clone(), version).with_range(min, max);
results.push(discovery.discover().await);
}
results
}
}
}
async fn handle_full_test(
target: String,
ip_version: cli::IpVersionArg,
timeout: Duration,
) -> Vec<TestResult> {
let versions = ip_version.to_versions();
let total_tests = versions.len() * 10; // Rough estimate
let pb = ProgressBar::new(total_tests as u64);
pb.set_style(
ProgressStyle::default_bar()
.template(
"{spinner:.green} [{elapsed_precise}] [{wide_bar:.cyan/blue}] {pos}/{len} {msg}",
)
.unwrap()
.progress_chars("█▉▊▋▌▍▎▏ "),
);
let mut all_results = Vec::new();
for version in versions {
pb.set_message(format!("Testing {:?} connectivity...", version));
// Network tests
let tcp_test =
network::NetworkTest::new(target.clone(), version, network::NetworkProtocol::Tcp)
.with_port(80)
.with_timeout(timeout);
all_results.push(tcp_test.run().await);
pb.inc(1);
let udp_test =
network::NetworkTest::new(target.clone(), version, network::NetworkProtocol::Udp)
.with_port(53)
.with_timeout(timeout);
all_results.push(udp_test.run().await);
pb.inc(1);
// ICMP test
let ping_results = network::ping_test(&target, version, 3).await;
all_results.extend(ping_results);
pb.inc(3);
// MTU discovery
pb.set_message(format!("Discovering MTU for {:?}...", version));
let mtu_result = mtu::full_mtu_discovery(&target, version).await;
all_results.push(mtu_result);
pb.inc(1);
// Common MTU sizes
let mtu_common = mtu::test_common_mtu_sizes(&target, version).await;
all_results.extend(mtu_common);
pb.inc(1);
}
// DNS tests
pb.set_message("Testing DNS resolution...");
let dns_results = dns::queries::comprehensive_dns_test(&target).await;
all_results.extend(dns_results);
pb.inc(1);
// DNS servers test
let dns_servers =
dns::test_common_dns_servers(&target, trust_dns_client::rr::RecordType::A).await;
all_results.extend(dns_servers);
pb.inc(1);
pb.finish_with_message("Testing complete!");
all_results
}
fn print_results_human(results: &[TestResult]) {
println!("\n{}", "=".repeat(80).blue());
println!("{}", "Network Test Results".bold().blue());
println!("{}", "=".repeat(80).blue());
let mut success_count = 0;
let mut failure_count = 0;
for result in results {
let status = if result.success {
success_count += 1;
"PASS".green().bold()
} else {
failure_count += 1;
"FAIL".red().bold()
};
let duration_str = utils::format_duration(result.duration);
println!("{} {} ({})", status, result.test_name, duration_str.cyan());
if result.success {
if !result.details.is_empty() {
println!("{}", result.details.green());
}
} else {
if let Some(ref error) = result.error {
println!("{}", error.to_string().red());
}
}
println!();
}
println!("{}", "-".repeat(80).blue());
println!(
"Summary: {} passed, {} failed, {} total",
success_count.to_string().green().bold(),
failure_count.to_string().red().bold(),
results.len().to_string().blue().bold()
);
if failure_count > 0 {
println!("{}", "Some tests failed!".red().bold());
} else {
println!("{}", "All tests passed!".green().bold());
}
}
fn print_results_json(results: &[TestResult]) {
#[derive(serde::Serialize)]
struct JsonResult {
test_name: String,
success: bool,
duration_ms: u128,
details: Option<String>,
error: Option<String>,
}
let json_results: Vec<JsonResult> = results
.iter()
.map(|r| JsonResult {
test_name: r.test_name.clone(),
success: r.success,
duration_ms: r.duration.as_millis(),
details: if r.success && !r.details.is_empty() {
Some(r.details.clone())
} else {
None
},
error: r.error.as_ref().map(|e| e.to_string()),
})
.collect();
println!("{}", serde_json::to_string_pretty(&json_results).unwrap());
}

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use crate::network::IpVersion;
use crate::utils::{measure_time, NetworkError, Result, TestResult};
use std::time::Duration;
pub struct MtuDiscovery {
pub target: String,
pub ip_version: IpVersion,
pub timeout: Duration,
pub max_mtu: u16,
pub min_mtu: u16,
}
impl Default for MtuDiscovery {
fn default() -> Self {
Self {
target: String::new(),
ip_version: IpVersion::V4,
timeout: Duration::from_secs(5),
max_mtu: 1500,
min_mtu: 68,
}
}
}
impl MtuDiscovery {
pub fn new(target: String, ip_version: IpVersion) -> Self {
Self {
target,
ip_version,
..Default::default()
}
}
pub fn with_range(mut self, min_mtu: u16, max_mtu: u16) -> Self {
self.min_mtu = min_mtu;
self.max_mtu = max_mtu;
self
}
pub async fn discover(&self) -> TestResult {
let test_name = format!("MTU discovery for {} ({:?})", self.target, self.ip_version);
let (duration, result) = measure_time(|| async { self.binary_search_mtu().await }).await;
match result {
Ok(mtu) => TestResult::new(test_name)
.success(duration, format!("Discovered MTU: {} bytes", mtu)),
Err(error) => TestResult::new(test_name).failure(duration, error),
}
}
async fn binary_search_mtu(&self) -> Result<u16> {
let mut low = self.min_mtu;
let mut high = self.max_mtu;
let mut best_mtu = low;
while low <= high {
let mid = (low + high) / 2;
match self.test_mtu_size(mid).await {
Ok(_) => {
best_mtu = mid;
low = mid + 1;
}
Err(_) => {
high = mid - 1;
}
}
}
Ok(best_mtu)
}
async fn test_mtu_size(&self, mtu_size: u16) -> Result<()> {
// Use system ping with packet size for MTU testing
let ping_cmd = match self.ip_version {
IpVersion::V4 => "ping",
IpVersion::V6 => "ping6",
};
let payload_size = match self.ip_version {
IpVersion::V4 => mtu_size.saturating_sub(28), // IP header 20 + ICMP header 8
IpVersion::V6 => mtu_size.saturating_sub(48), // IPv6 header 40 + ICMP header 8
};
if payload_size < 8 {
return Err(NetworkError::InvalidMtu(mtu_size));
}
let output = tokio::process::Command::new(ping_cmd)
.args(&[
"-c",
"1",
"-W",
"5000",
"-M",
"do", // Don't fragment
"-s",
&payload_size.to_string(),
&self.target,
])
.output()
.await
.map_err(|e| NetworkError::Io(e))?;
if output.status.success() {
Ok(())
} else {
Err(NetworkError::Other("MTU test failed".to_string()))
}
}
}
pub async fn test_common_mtu_sizes(target: &str, ip_version: IpVersion) -> Vec<TestResult> {
let common_sizes = [68, 576, 1280, 1500, 4464, 9000];
let mut results = Vec::new();
for &size in &common_sizes {
let discovery = MtuDiscovery::new(target.to_string(), ip_version).with_range(size, size);
let mut result = discovery.discover().await;
result.test_name = format!("MTU test {} bytes for {} ({:?})", size, target, ip_version);
results.push(result);
}
results
}
pub async fn full_mtu_discovery(target: &str, ip_version: IpVersion) -> TestResult {
let discovery = MtuDiscovery::new(target.to_string(), ip_version);
discovery.discover().await
}

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use super::{IpVersion, NetworkTest};
use crate::utils::{NetworkError, Result, TestResult};
use tokio::time::Duration;
impl NetworkTest {
pub async fn test_icmp(&self) -> Result<String> {
// Use system ping command for simplicity and compatibility
let target = &self.target;
let ping_cmd = match self.ip_version {
IpVersion::V4 => "ping",
IpVersion::V6 => "ping6",
};
let output = tokio::process::Command::new(ping_cmd)
.args(&["-c", "1", "-W", "5000", target]) // 1 ping, 5 second timeout
.output()
.await
.map_err(|e| NetworkError::Io(e))?;
if output.status.success() {
let stdout = String::from_utf8_lossy(&output.stdout);
if let Some(line) = stdout.lines().find(|line| line.contains("time=")) {
Ok(format!("ICMP ping successful: {}", line.trim()))
} else {
Ok("ICMP ping successful".to_string())
}
} else {
let stderr = String::from_utf8_lossy(&output.stderr);
Err(NetworkError::Other(format!("Ping failed: {}", stderr)))
}
}
}
pub async fn ping_test(target: &str, ip_version: IpVersion, count: u32) -> Vec<TestResult> {
let mut results = Vec::new();
for i in 0..count {
let test = NetworkTest::new(target.to_string(), ip_version, super::NetworkProtocol::Icmp);
let mut result = test.run().await;
result.test_name = format!("ICMP ping #{} to {} ({:?})", i + 1, target, ip_version);
results.push(result);
if i < count - 1 {
tokio::time::sleep(Duration::from_secs(1)).await;
}
}
results
}

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use crate::utils::{measure_time, NetworkError, Result, TestResult};
use std::net::IpAddr;
use std::time::Duration;
pub mod icmp;
pub mod tcp;
pub mod udp;
pub use icmp::*;
pub use tcp::*;
pub use udp::*;
#[derive(Debug, Clone, Copy)]
pub enum IpVersion {
V4,
V6,
}
#[derive(Debug, Clone, Copy)]
pub enum NetworkProtocol {
Tcp,
Udp,
Icmp,
}
#[derive(Debug, Clone)]
pub struct NetworkTest {
pub target: String,
pub ip_version: IpVersion,
pub protocol: NetworkProtocol,
pub port: Option<u16>,
pub timeout: Duration,
}
impl NetworkTest {
pub fn new(target: String, ip_version: IpVersion, protocol: NetworkProtocol) -> Self {
Self {
target,
ip_version,
protocol,
port: None,
timeout: Duration::from_secs(5),
}
}
pub fn with_port(mut self, port: u16) -> Self {
self.port = Some(port);
self
}
pub fn with_timeout(mut self, timeout: Duration) -> Self {
self.timeout = timeout;
self
}
pub async fn run(&self) -> TestResult {
let test_name = format!(
"{:?} test to {} {:?} {}",
self.protocol,
self.target,
self.ip_version,
self.port.map(|p| format!(":{}", p)).unwrap_or_default()
);
let (duration, result) = measure_time(|| async {
match self.protocol {
NetworkProtocol::Tcp => self.test_tcp().await,
NetworkProtocol::Udp => self.test_udp().await,
NetworkProtocol::Icmp => self.test_icmp().await,
}
})
.await;
match result {
Ok(details) => TestResult::new(test_name).success(duration, details),
Err(error) => TestResult::new(test_name).failure(duration, error),
}
}
async fn resolve_target(&self) -> Result<IpAddr> {
use trust_dns_resolver::config::*;
use trust_dns_resolver::TokioAsyncResolver;
let resolver =
TokioAsyncResolver::tokio(ResolverConfig::default(), ResolverOpts::default());
let lookup = match self.ip_version {
IpVersion::V4 => {
let response = resolver
.ipv4_lookup(&self.target)
.await
.map_err(|e| NetworkError::DnsResolution(e.to_string()))?;
response.iter().next().map(|ip| IpAddr::V4(**ip))
}
IpVersion::V6 => {
let response = resolver
.ipv6_lookup(&self.target)
.await
.map_err(|e| NetworkError::DnsResolution(e.to_string()))?;
response.iter().next().map(|ip| IpAddr::V6(**ip))
}
};
lookup.ok_or_else(|| NetworkError::DnsResolution("No IP found".to_string()))
}
}

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use super::{IpVersion, NetworkTest};
use crate::utils::{NetworkError, Result, TestResult};
use std::net::SocketAddr;
use tokio::net::TcpStream;
use tokio::time::timeout;
impl NetworkTest {
pub async fn test_tcp(&self) -> Result<String> {
let ip = self.resolve_target().await?;
let port = self.port.unwrap_or(80);
let addr = SocketAddr::new(ip, port);
let stream = timeout(self.timeout, TcpStream::connect(addr))
.await
.map_err(|_| NetworkError::Timeout)?
.map_err(|e| NetworkError::Io(e))?;
let local_addr = stream.local_addr().map_err(NetworkError::Io)?;
let peer_addr = stream.peer_addr().map_err(NetworkError::Io)?;
Ok(format!(
"TCP connection successful: {} -> {}",
local_addr, peer_addr
))
}
}
pub async fn test_tcp_ports(target: &str, ports: &[u16], ip_version: IpVersion) -> Vec<TestResult> {
let mut results = Vec::new();
for &port in ports {
let test = NetworkTest::new(target.to_string(), ip_version, super::NetworkProtocol::Tcp)
.with_port(port);
results.push(test.run().await);
}
results
}
pub async fn test_tcp_common_ports(target: &str, ip_version: IpVersion) -> Vec<TestResult> {
let common_ports = [22, 25, 53, 80, 110, 143, 443, 993, 995, 8080, 8443];
test_tcp_ports(target, &common_ports, ip_version).await
}

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use super::{IpVersion, NetworkTest};
use crate::utils::{NetworkError, Result, TestResult};
use std::net::SocketAddr;
use tokio::net::UdpSocket;
use tokio::time::timeout;
impl NetworkTest {
pub async fn test_udp(&self) -> Result<String> {
let ip = self.resolve_target().await?;
let port = self.port.unwrap_or(53);
let addr = SocketAddr::new(ip, port);
let bind_addr = match self.ip_version {
IpVersion::V4 => "0.0.0.0:0",
IpVersion::V6 => "[::]:0",
};
let socket = UdpSocket::bind(bind_addr).await.map_err(NetworkError::Io)?;
socket.connect(addr).await.map_err(NetworkError::Io)?;
let test_data = b"test";
let send_result = timeout(self.timeout, socket.send(test_data))
.await
.map_err(|_| NetworkError::Timeout)?
.map_err(NetworkError::Io)?;
let mut buf = [0; 1024];
let recv_result =
timeout(std::time::Duration::from_millis(100), socket.recv(&mut buf)).await;
let details = match recv_result {
Ok(Ok(bytes)) => format!(
"UDP test successful: sent {} bytes, received {} bytes to {}",
send_result, bytes, addr
),
_ => format!(
"UDP test (send only): sent {} bytes to {} (no response expected for basic connectivity test)",
send_result, addr
),
};
Ok(details)
}
}
pub async fn test_udp_ports(target: &str, ports: &[u16], ip_version: IpVersion) -> Vec<TestResult> {
let mut results = Vec::new();
for &port in ports {
let test = NetworkTest::new(target.to_string(), ip_version, super::NetworkProtocol::Udp)
.with_port(port);
results.push(test.run().await);
}
results
}
pub async fn test_udp_common_ports(target: &str, ip_version: IpVersion) -> Vec<TestResult> {
let common_ports = [53, 67, 68, 123, 161, 162, 514, 1194, 5353];
test_udp_ports(target, &common_ports, ip_version).await
}

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use std::time::{Duration, Instant};
use thiserror::Error;
#[derive(Error, Debug)]
pub enum NetworkError {
#[error("Connection timeout")]
Timeout,
#[error("DNS resolution failed: {0}")]
DnsResolution(String),
#[error("Socket creation failed: {0}")]
SocketCreation(String),
#[error("Network unreachable")]
NetworkUnreachable,
#[error("Host unreachable")]
HostUnreachable,
#[error("Permission denied")]
PermissionDenied,
#[error("Invalid MTU size: {0}")]
InvalidMtu(u16),
#[error("IO error: {0}")]
Io(#[from] std::io::Error),
#[error("Other error: {0}")]
Other(String),
}
pub type Result<T> = std::result::Result<T, NetworkError>;
#[must_use]
pub struct TestResult {
pub test_name: String,
pub success: bool,
pub duration: Duration,
pub details: String,
pub error: Option<NetworkError>,
}
impl TestResult {
pub const fn new(test_name: String) -> Self {
Self {
test_name,
success: false,
duration: Duration::ZERO,
details: String::new(),
error: None,
}
}
pub fn success(mut self, duration: Duration, details: String) -> Self {
self.success = true;
self.duration = duration;
self.details = details;
self
}
pub fn failure(mut self, duration: Duration, error: NetworkError) -> Self {
self.success = false;
self.duration = duration;
self.error = Some(error);
self
}
}
pub fn format_duration(duration: Duration) -> String {
let ms = duration.as_millis();
if ms < 1000 {
format!("{ms}ms")
} else {
format!("{:.2}s", duration.as_secs_f32())
}
}
pub async fn measure_time<F, Fut, T>(f: F) -> (Duration, T)
where
F: FnOnce() -> Fut,
Fut: std::future::Future<Output = T>,
{
let start = Instant::now();
let result = f().await;
let duration = start.elapsed();
(duration, result)
}
mod tests;

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#[cfg(test)]
mod unit_tests {
use crate::utils::{format_duration, measure_time, NetworkError, TestResult};
use std::time::Duration;
#[test]
fn test_format_duration_milliseconds() {
let duration = Duration::from_millis(500);
assert_eq!(format_duration(duration), "500ms");
}
#[test]
fn test_format_duration_seconds() {
let duration = Duration::from_millis(1500);
assert_eq!(format_duration(duration), "1.50s");
}
#[test]
fn test_test_result_new() {
let result = TestResult::new("test_name".to_string());
assert_eq!(result.test_name, "test_name");
assert!(!result.success);
assert_eq!(result.duration, Duration::ZERO);
assert!(result.details.is_empty());
assert!(result.error.is_none());
}
#[test]
fn test_test_result_success() {
let duration = Duration::from_millis(100);
let details = "Success details".to_string();
let result = TestResult::new("test".to_string()).success(duration, details.clone());
assert!(result.success);
assert_eq!(result.duration, duration);
assert_eq!(result.details, details);
assert!(result.error.is_none());
}
#[test]
fn test_test_result_failure() {
let duration = Duration::from_millis(200);
let error = NetworkError::Timeout;
let result = TestResult::new("test".to_string()).failure(duration, error);
assert!(!result.success);
assert_eq!(result.duration, duration);
assert!(result.details.is_empty());
assert!(result.error.is_some());
assert!(matches!(result.error, Some(NetworkError::Timeout)));
}
#[tokio::test]
async fn test_measure_time() {
let (duration, result) = measure_time(|| async {
tokio::time::sleep(Duration::from_millis(100)).await;
"test_result"
})
.await;
assert!(duration >= Duration::from_millis(90)); // Allow some margin
assert!(duration <= Duration::from_millis(200)); // Upper bound
assert_eq!(result, "test_result");
}
}

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use nettest::*;
use std::time::Duration;
#[tokio::test]
async fn test_network_tcp_connectivity() {
let test = network::NetworkTest::new(
"google.com".to_string(),
network::IpVersion::V4,
network::NetworkProtocol::Tcp,
)
.with_port(80)
.with_timeout(Duration::from_secs(10));
let result = test.run().await;
assert!(result.success, "TCP test to google.com should succeed");
assert!(result.duration > Duration::ZERO);
}
#[tokio::test]
async fn test_network_udp_connectivity() {
let test = network::NetworkTest::new(
"8.8.8.8".to_string(),
network::IpVersion::V4,
network::NetworkProtocol::Udp,
)
.with_port(53)
.with_timeout(Duration::from_secs(10));
let result = test.run().await;
assert!(result.success || !result.success); // UDP might not always respond, so we test both cases
assert!(result.duration > Duration::ZERO);
}
#[tokio::test]
async fn test_dns_query() {
let test = dns::DnsTest::new(
"google.com".to_string(),
trust_dns_client::rr::RecordType::A,
)
.with_timeout(Duration::from_secs(10));
let result = test.run().await;
assert!(result.success, "DNS A query for google.com should succeed");
assert!(result.duration > Duration::ZERO);
assert!(!result.details.is_empty());
}
#[tokio::test]
async fn test_dns_servers() {
let results =
dns::test_common_dns_servers("google.com", trust_dns_client::rr::RecordType::A).await;
assert!(!results.is_empty());
let successful_results = results.iter().filter(|r| r.success).count();
assert!(
successful_results > 0,
"At least one DNS server should respond"
);
}
#[tokio::test]
async fn test_mtu_discovery() {
let discovery = mtu::MtuDiscovery::new("google.com".to_string(), network::IpVersion::V4)
.with_range(68, 576); // Test smaller range for speed
let result = discovery.discover().await;
assert!(result.duration > Duration::ZERO);
}
#[tokio::test]
async fn test_comprehensive_dns() {
let results = dns::queries::comprehensive_dns_test("google.com").await;
assert!(!results.is_empty());
let successful_results = results.iter().filter(|r| r.success).count();
assert!(
successful_results > 0,
"At least some DNS queries should succeed"
);
}
#[tokio::test]
async fn test_domain_categories() {
let results = dns::categories::test_domain_category(
&dns::categories::NORMAL_SITES,
trust_dns_client::rr::RecordType::A,
)
.await;
assert!(!results.is_empty());
let successful_results = results.iter().filter(|r| r.success).count();
assert!(successful_results > 0, "Normal sites should mostly resolve");
}
#[tokio::test]
async fn test_error_handling() {
let test = network::NetworkTest::new(
"nonexistent.invalid".to_string(),
network::IpVersion::V4,
network::NetworkProtocol::Tcp,
)
.with_port(80)
.with_timeout(Duration::from_millis(100));
let result = test.run().await;
assert!(!result.success, "Test to nonexistent domain should fail");
assert!(result.error.is_some());
}
#[tokio::test]
async fn test_timeout_handling() {
let test = network::NetworkTest::new(
"192.0.2.1".to_string(), // Reserved test IP that shouldn't respond
network::IpVersion::V4,
network::NetworkProtocol::Tcp,
)
.with_port(80)
.with_timeout(Duration::from_millis(100));
let result = test.run().await;
assert!(!result.success, "Test to non-responsive IP should timeout");
assert!(result.duration <= Duration::from_millis(200)); // Allow some margin
}
#[tokio::test]
async fn test_ipv6_support() {
let test = network::NetworkTest::new(
"google.com".to_string(),
network::IpVersion::V6,
network::NetworkProtocol::Tcp,
)
.with_port(80)
.with_timeout(Duration::from_secs(10));
let result = test.run().await;
// IPv6 might not be available in all test environments, so we just check it doesn't panic
assert!(result.duration > Duration::ZERO);
}
#[cfg(test)]
mod unit_tests {
use super::*;
#[test]
fn test_format_duration() {
assert_eq!(format_duration(Duration::from_millis(500)), "500ms");
assert_eq!(format_duration(Duration::from_secs(2)), "2.00s");
}
#[test]
fn test_test_result_creation() {
let result = TestResult::new("test".to_string());
assert_eq!(result.test_name, "test");
assert!(!result.success);
assert_eq!(result.duration, Duration::ZERO);
}
#[test]
fn test_test_result_success() {
let result = TestResult::new("test".to_string())
.success(Duration::from_millis(100), "details".to_string());
assert!(result.success);
assert_eq!(result.duration, Duration::from_millis(100));
assert_eq!(result.details, "details");
}
#[test]
fn test_test_result_failure() {
let error = NetworkError::Timeout;
let result = TestResult::new("test".to_string()).failure(Duration::from_millis(100), error);
assert!(!result.success);
assert_eq!(result.duration, Duration::from_millis(100));
assert!(result.error.is_some());
}
}