2.4.0 (#613 )

Co-authored-by: bee-san <[email protected]>
removed unnecessary .clone()s (#610 )
2026-11-07 09:46:04 -10:00 · 2024-07-08 14:48:22 +01:00 · 2024-07-08 14:34:35 +01:00 · 2024-07-08 14:32:39 +01:00 · 2024-07-08 14:32:28 +01:00 · 2024-07-08 14:32:20 +01:00
30 changed files with 2964 additions and 1378 deletions
@@ -0,0 +1,29 @@
+version: 2
+updates:
+- package-ecosystem: "github-actions"
+  directory: "/"
+  schedule:
+    interval: "daily"
+- package-ecosystem: "docker"
+  directory: "/"
+  schedule:
+    interval: "daily"
+- package-ecosystem: cargo
+  directory: "/"
+  schedule:
+    interval: daily
+  open-pull-requests-limit: 10
+  ignore:
+  - dependency-name: anyhow
+    versions:
+    - 1.0.38
+    - 1.0.39
+  - dependency-name: serde
+    versions:
+    - 1.0.123
+  - dependency-name: futures
+    versions:
+    - 0.3.12
+  - dependency-name: rlimit
+    versions:
+    - 0.5.3
@@ -1,10 +0,0 @@
-name: Check Markdown links
-
-on: push
-
-jobs:
-  markdown-link-check:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@master
-    - uses: gaurav-nelson/github-action-markdown-link-check@v1
@@ -1,48 +0,0 @@
-on: [push, pull_request]
-
-name: Continuous integration
-
-jobs:
-  check:
-    name: Check
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
-          override: true
-      # - uses: actions-rs/cargo@v1
-        # with:
-          # command: check
-
-  test:
-    name: Test Suite
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
-          override: true
-      - uses: actions-rs/cargo@v1
-        with:
-          command: test
-
-  fmt:
-    name: Rustfmt
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
-          override: true
-      - run: rustup component add rustfmt
-      - uses: actions-rs/cargo@v1
-        with:
-          command: fmt
-          args: --all -- --check
@@ -0,0 +1,96 @@
+name: Build
+on:
+  pull_request:
+    paths-ignore:
+      - '.github/**'
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - '.github/**'
+  schedule:
+    - cron: '00 01 * * *'
+
+jobs:
+  check:
+    name: Check
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+
+      - name: Install stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - uses: Swatinem/rust-cache@v2
+
+      - name: Run cargo check
+        uses: actions-rs/cargo@v1
+        with:
+          command: check
+
+  test:
+    name: Test Suite
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        rust: [stable]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+
+      - name: Install stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+
+      - uses: Swatinem/rust-cache@v2
+
+      - name: Run cargo test
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+
+  lints:
+    name: Lints
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - name: Install stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+          components: rustfmt, clippy
+
+      - uses: Swatinem/rust-cache@v2
+
+      - name: Run cargo fmt
+        uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check
+
+      - name: Run cargo clippy
+        uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: -- -D warnings
+
+      - name: Run rustdoc lints
+        uses: actions-rs/cargo@v1
+        with:
+          command: doc
+          args: --workspace --all-features --no-deps --document-private-items
@@ -0,0 +1,38 @@
+name: Release - Distribute Docker image
+
+on:
+  push:
+    tags:
+      - '[0-9]+.[0-9]+.[0-9]+'
+  # release:
+  #   types: [published]
+
+jobs:
+  push_to_registry:
+    name: Push Docker image to Docker Hub
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v4
+
+      - name: Log in to Docker Hub
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          password: ${{ secrets.DOCKERHUB_USERNAME }}
+          username: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: rustscan/rustscan
+          flavor: latest=true
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: ${{ contains(fromJson('["push", "release"]'), github.event_name) }} # Publish to docker registry only on push event or new release.
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
@@ -4,6 +4,8 @@ on:
  push:
    branches:
    - master
+    paths-ignore:
+      - '.github/**'
  schedule:
  # Run everyday at 9:00 AM (See https://pubs.opengroup.org/onlinepubs/9699919799/utilities/crontab.html#tag_20_25_07)
  - cron: "0 9 * * *"
@@ -16,3 +18,4 @@ jobs:
    - uses: gaurav-nelson/github-action-markdown-link-check@v1
      with:
        use-quiet-mode: 'yes'
+        config-file: './.github/workflows/mlc_config.json'
@@ -0,0 +1,14 @@
+{
+    "_comment": "Config for markdown-link-check. Resolves issue #540.",
+    "ignorePatterns": [
+      {
+        "pattern": "^https://github.com/RustScan/RustScan/workflows/Continuous%20integration/badge.svg"
+      },
+      {
+        "pattern": "^https://crates.io/crates/rustscan/"
+      },
+      {
+        "pattern": "^https://bees.substack.com/p/making-hacking-accessible"
+      }
+    ]
+  }
@@ -0,0 +1,216 @@
+name: Release - Distribute binaries
+on:
+  # If we want to make release using github interface.
+  # release:
+  #   types: [published]
+  # If we want to make release by pushing new tag.
+  push:
+    tags:
+      - '[0-9]+.[0-9]+.[0-9]+'
+  pull_request:
+    branches:
+      - master
+    paths:
+      - 'Cargo.toml'
+      - 'Cargo.lock'
+      - '.github/workflows/release.yml'
+
+env:
+  BIN_NAME: rustscan
+  PROJECT_NAME: rustscan
+  REPO_NAME: RustScan/RustScan
+  BREW_TAP: RustScan/homebrew-tap
+
+jobs:
+  build:
+    name: Build
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false # don't fail other jobs if one fails
+      matrix:
+        # aarch64-linux is failing due to python3 missing issues during tests. I'm removing it for now.
+        # build: [x86_64-linux, aarch64-linux, x86_64-macos, aarch64-macos, x86_64-windows, x86_64-win-gnu]
+        build: [x86_64-linux, x86_64-macos, aarch64-macos, x86_64-windows, x86_64-win-gnu]
+        include:
+          - build: aarch64-macos
+            os: macos-latest
+            rust: stable
+            target: aarch64-apple-darwin
+            cross: true
+          # - build: aarch64-linux
+          #   os: ubuntu-20.04
+          #   rust: stable
+          #   target: aarch64-unknown-linux-gnu
+          #   cross: true
+          - build: x86_64-linux
+            os: ubuntu-20.04
+            rust: stable
+            target: x86_64-unknown-linux-gnu
+            cross: false
+          - build: x86_64-macos
+            os: macos-latest
+            rust: stable
+            target: x86_64-apple-darwin
+            cross: false
+          - build: x86_64-windows
+            os: windows-2019
+            rust: stable
+            target: x86_64-pc-windows-msvc
+            cross: false
+          - build: x86_64-win-gnu
+            os: windows-2019
+            rust: stable-x86_64-gnu
+            target: x86_64-pc-windows-gnu
+            cross: false
+
+    steps:
+      - name: Set Git config (windows only)
+        if: contains(matrix.os, 'windows') # Windows is missing some dependencies
+        run: |
+          git config --global pack.windowMemory "100m"
+          git config --global pack.packSizeLimit "100m"
+          git config --global pack.threads "1" 
+          git config --global pack.deltaCacheSize "512m"
+
+      - name: Install dependencies
+        if: contains(matrix.build, 'aarch64-linux') # Windows is missing some dependencies
+        run: sudo apt-get update && sudo apt-get install -y gcc-aarch64-linux-gnu python3
+
+      - name: Install python 3.10
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.10'
+
+      - name: Checkout sources
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - name: Install ${{ matrix.rust }} toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          target: ${{ matrix.target }}
+          override: true
+
+      - name: Run cargo test
+        uses: actions-rs/cargo@v1
+        with:
+          use-cross: ${{ matrix.cross }}
+          command: test
+          args: --release --locked --target ${{ matrix.target }}
+
+      - name: Build release binary
+        uses: actions-rs/cargo@v1
+        with:
+          use-cross: ${{ matrix.cross }}
+          command: build
+          args: --release --locked --target ${{ matrix.target }}
+
+      - name: Calculate tag name
+        # if: contains(matrix.build, 'linux')
+        shell: bash
+        run: |
+          name=dev
+          if [[ ${GITHUB_REF} =~ refs/tags/[0-9]+.[0-9]+.[0-9]+ ]]; then
+            name=${GITHUB_REF#refs/tags/}
+          fi
+          echo "TAG=$name" >> $GITHUB_ENV
+        id: tagname
+
+      - name: Build and package artifacts
+        shell: bash
+        run: |
+          mkdir dist
+          if [[ "${{ matrix.build }}" =~ "windows" ]]; then
+            cp "target/${{ matrix.target }}/release/$BIN_NAME.exe" "dist/"
+          else
+            cp "target/${{ matrix.target }}/release/$BIN_NAME" "dist/"
+          fi
+
+          if [[ "${{ matrix.build }}" =~ "linux" ]]; then
+            cargo install cargo-deb
+            cargo deb --target ${{ matrix.target }} --deb-version ${TAG}
+            cp "target/${{ matrix.target }}/debian/rustscan_${TAG}_amd64.deb" "dist/" || true
+          fi
+
+      - uses: actions/[email protected]
+        with:
+          name: bins-${{ matrix.build }}
+          path: dist
+
+  package:
+    name: Package
+    needs: [build]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+        with:
+          submodules: false
+
+      - uses: actions/download-artifact@v4
+        with:
+          path: dist
+
+      - name: Calculate tag name
+        # if: contains(matrix.build, 'linux')
+        shell: bash
+        run: |
+          name=dev
+          if [[ ${GITHUB_REF} =~ refs/tags/[0-9]+.[0-9]+.[0-9]+ ]]; then
+            name=${GITHUB_REF#refs/tags/}
+          fi
+          echo "TAG=$name" >> $GITHUB_ENV
+        id: tagname
+
+      - name: Build archive
+        shell: bash
+        run: |
+          set -ex
+          rm -rf tmp
+          mkdir tmp
+          for dir in dist/bins-* ; do
+              platform=${dir#"dist/bins-"}
+              unset exe
+              if [[ $platform =~ "win" ]]; then
+                  exe=".exe"
+              fi
+              pkgname=$PROJECT_NAME-$TAG-$platform
+              mkdir tmp/$pkgname
+              cp $dir/$BIN_NAME$exe dist/ || true
+              mv $dir/$BIN_NAME$exe tmp/$pkgname
+              chmod +x tmp/$pkgname/$BIN_NAME$exe
+
+              if [[ $platform =~ "linux" ]]; then
+                  mv "$dir/rustscan_${TAG}_amd64.deb" dist/ || true
+              fi
+
+              tar cJf dist/$pkgname.tar.xz -C tmp $pkgname
+              7z a dist/$pkgname.zip tmp/$pkgname
+          done
+
+      - name: Upload binaries to release
+        if: (github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')) || github.event_name == 'release'
+        uses: svenstaro/upload-release-action@v2
+        with:
+          repo_token: ${{ secrets.GITHUB_TOKEN }}
+          file: dist/*
+          file_glob: true
+          tag: ${{ github.ref }}
+          overwrite: true
+
+      # - uses: mislav/bump-homebrew-formula-action@v3
+      #   with:
+      #     formula-path: ${{env.PROJECT_NAME}}.rb
+      #     homebrew-tap: ${{ env.BREW_TAP }}
+      #     download-url: 'https://github.com/${{ env.REPO_NAME }}/releases/download/${{ github.ref }}/${{env.PROJECT_NAME}}-${{ github.ref }}-x86_64-macos.tar.xz'
+      #     commit-message: updating formula for ${{ env.PROJECT_NAME }}
+      #   env:
+      #     COMMITTER_TOKEN: ${{ secrets.COMMITTER_TOKEN }}
+
+      - run: cargo publish --token ${CRATES_TOKEN}
+        if: (github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')) || github.event_name == 'release'
+        env:
+          CRATES_TOKEN: ${{ secrets.CRATES_TOKEN }}
@@ -120,3 +120,5 @@ fabric.properties
 .idea/*
 .idea
 .idea*
+
+settings.json
@@ -1,7 +1,7 @@
 [package]
 name = "rustscan"
-version = "2.1.0"
-authors = ["Bee <brando[email protected]>"]
+version = "2.3.0"
+authors = ["Autumn <autum[email protected]>"]
 edition = "2018"
 description = "Faster Nmap Scanning with Rust"
 homepage = "https://github.com/rustscan/rustscan"
@@ -9,7 +9,7 @@ repository = "https://github.com/rustscan/rustscan"
 license = "MIT"
 keywords = ["port", "scanning", "nmap"]
 categories = ["command-line-utilities"]
-readme="README.md"
+readme = "README.md"
 exclude = [
    ".github/*",
    "pictures/*",
@@ -17,30 +17,31 @@ exclude = [
 ]

 [dependencies]
-colored = "2.0.0"
-structopt = "0.3.20"
+clap = { version = "4.5.8", features = ["derive", "wrap_help"] }
+colored = "2.1.0"
 async-std = "1.7.0"
 futures = "0.3"
-rlimit = "0.5.4"
-shell-words = "1.0.0"
-log = "0.4.0"
-env_logger = "0.8.2"
-dirs = "3.0.1"
+rlimit = "0.10.1"
+log = "0.4.22"
+env_logger = "0.11.3"
+anstream = "=0.6.14"
+dirs = "5.0.1"
 gcd = "2.0.1"
-rand = "0.7.3"
+rand = "0.8.5"
 colorful = "0.2.1"
 ansi_term = "0.12.1"
-toml = "0.5.7"
+toml = "0.8.14"
 serde = "1.0.124"
 serde_derive = "1.0.116"
-cidr-utils = "0.5.1"
-itertools = "0.9.0"
-trust-dns-resolver = { version = "0.19.5", features = ["dns-over-rustls"] }
+cidr-utils = "0.6.1"
+itertools = "0.13.0"
+hickory-resolver = { version = "0.24.0", features = ["dns-over-rustls"] }
 anyhow = "1.0.40"
 subprocess = "0.2.6"
-text_placeholder = { version = "0.4", features = ["struct_context"] }
+text_placeholder = { version = "0.5", features = ["struct_context"] }

 [dev-dependencies]
+parameterized = "2.0.0"
 wait-timeout = "0.2"

 [package.metadata.deb]
@@ -50,3 +51,9 @@ section = "rust"
 [profile.release]
 lto = true
 panic = 'abort'
+strip = true
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[[bin]]
+name = "rustscan"
+path = "src/main.rs"
@@ -1,19 +1,25 @@
+# Build Stage
 FROM rust:alpine as builder
 LABEL maintainer="RustScan <https://github.com/RustScan>"
 RUN apk add --no-cache build-base

 # Encourage some layer caching here rather then copying entire directory that includes docs to builder container ~CMN
-WORKDIR /usr/src/rustscan
+WORKDIR /app/rustscan
 COPY Cargo.toml Cargo.lock ./
 COPY src/ src/
-RUN cargo install --path .
+RUN cargo build --release

-FROM alpine:3.12
+# Release Stage
+FROM alpine:3.20.1 as release
 LABEL author="Hydragyrum <https://github.com/Hydragyrum>"
+LABEL author="LeoFVO <https://github.com/LeoFVO>"
+
 RUN addgroup -S rustscan && \
    adduser -S -G rustscan rustscan && \
    ulimit -n 100000 && \
-    apk add --no-cache nmap nmap-scripts wget
-COPY --from=builder /usr/local/cargo/bin/rustscan /usr/local/bin/rustscan
+    apk add --no-cache nmap nmap-scripts wget ca-certificates bind-tools
+
 USER rustscan
+COPY --from=builder /app/rustscan/target/release/rustscan /usr/local/bin/rustscan
+
 ENTRYPOINT [ "/usr/local/bin/rustscan" ]
@@ -1,35 +1,29 @@
-<p align="center">
-➡️
-<a href="http://discord.skerritt.blog">Discord</a> |
- <a href="https://github.com/RustScan/RustScan/wiki/Installation-Guide">Installation Guide</a> |
- <a href="https://github.com/RustScan/RustScan#-usage">Usage Guide</a>
- ⬅️
-<br>
+<div align="center" markdown="1">
+
+➡️ [Discord][discord] | [Installation Guide][toc-install] | [Usage Guide][usage-guide] ⬅️
+
 <img src="pictures/rustscan.png" height=400px width=400px>
-</p>
-<p align="center">
-<u><b> The Modern Port Scanner. </b></u><br><b>Fast, smart, effective.</b> 
-</p>
-<p align="center">
-<img alt="AUR version" src="https://img.shields.io/aur/version/rustscan">
-<img src="https://img.shields.io/badge/Built%20with-Rust-Purple">
-<img alt="GitHub All Releases" src="https://img.shields.io/github/downloads/rustscan/rustscan/total?label=GitHub%20Downloads">
-<img alt="Crates.io" src="https://img.shields.io/crates/d/rustscan?label=Cargo%20Downloads">
-<img alt="Discord" src="https://img.shields.io/discord/754001738184392704">
-<img alt="Actions" src="https://github.com/RustScan/RustScan/workflows/Continuous%20integration/badge.svg?branch=master">
-</p>
-<hr>

-| <p align="center"><a href="https://hub.docker.com/r/cmnatic/rustscan">🐋 Docker (Recommended) </a></p>            | <p align="center"><a href="https://github.com/RustScan/RustScan/releases">👩‍💻 Kali / Debian </p>                 | <p align="center"><a href="https://aur.archlinux.org/packages/rustscan/">🏗️ Arch </a></p>                       | <p align="center"><a href="https://crates.io/crates/rustscan">🔧 Homebrew </a></p>                     |
-| ----------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------- |
-| <p align="center"><img src="https://github.com/RustScan/RustScan/blob/master/pictures/docker.png?raw=true" /></p> | <p align="center"><img src="https://github.com/RustScan/RustScan/blob/master/pictures/kali.png?raw=true" /></p> | <p align="center"><img src="https://github.com/RustScan/RustScan/blob/master/pictures/arch.png?raw=true" /></p> | <p align="center"><img src="https://raw.githubusercontent.com/RustScan/RustScan/master/pictures/apple.png" /></p> |
-| `docker pull rustscan/rustscan:2.0.0` <p>[Usage](https://github.com/RustScan/RustScan#docker-whale)              | [Read the install guide](https://github.com/Rustscan/RustScan/blob/master/README.md#%EF%B8%8F-debian--kali)     | `yay -S rustscan`                                                                                               | `brew install rustscan`                                                                                        |
+<!--<u>**The Modern Port Scanner.**</u>-->
+**Fast, smart, effective.**

-<hr>
+![Arch Linux package][badge-1] ![Built with Rust][badge-2] ![GitHub All Releases][badge-3] ![Crates.io][badge-4] ![Discord][badge-5] ![Actions][badge-6]
+
+
+---
+
+|                     🐋 `(Recommended)`                      |              👩‍💻               |             🏗️              |             🔧              |
+| :---------------------------------------------------------: | :---------------------------: | :-------------------------: | :-------------------------: |
+|               [![Docker][DockerPic]][Docker]                | [![Kali][Kali1]][Kali/Debian] | [![Arch][Arch]][Arch-Linux] | [![apple][apple]][Homebrew] |
+| `docker pull rustscan/rustscan:latest`</br>[Docker][usage-0] | [Link to Documentation][kali] |      `yay -S rustscan`      |   `brew install rustscan`   |
+
+---
+
+</div>

 # 🤔 What is this?

-![fast](pictures/fast.gif)
+![fast][speed-1]

 The Modern Port Scanner. **Find ports quickly (3 seconds at its fastest)**. Run scripts through our scripting engine (Python, Lua, Shell supported).

@@ -43,17 +37,17 @@ The Modern Port Scanner. **Find ports quickly (3 seconds at its fastest)**. Run

 ## ‼️ Important Links

-| Installation Guide                                                                     | Documentation                                            | Discord                                  |
-| -------------------------------------------------------------------------------------- | -------------------------------------------------------- | ---------------------------------------- |
-| 📖 [Installation Guide](https://github.com/RustScan/RustScan#-full-installation-guide) | 📚 [Documentation](https://rustscan.github.io/RustScan/) | 🦜 [Discord](http://discord.skerritt.blog) |
+|         <!--Installation Guide-->          |          <!--Documentation-->          |       <!--Discord-->        |
+| :----------------------------------------: | :------------------------------------: | :-------------------------: |
+| :book: [Installation Guide][links-table-1] | :books: [Documentation][links-table-2] | :parrot: [Discord][discord] |

 ## 🙋 Table of Contents

- 📖 [Installation Guide](https://github.com/RustScan/RustScan/wiki/Installation-Guide)
- 🐋 [Docker Usage](https://github.com/RustScan/RustScan/wiki/Installation-Guide)
- 🦜 [Discord](http://discord.skerritt.blog)
- 🤸 [Usage](https://github.com/RustScan/RustScan/wiki/Usage)
- 🎪 [Community](https://github.com/RustScan/RustScan#-community)
+- 📖 [Installation Guide][toc-install]
+- 🐋 [Docker Usage][toc-docker-usage]
+- 🦜 [Discord][discord]
+- 🤸 [Usage][usage-1]
+- 🎪 [Community][toc-community]

 # 🔭 Why RustScan?

@@ -63,83 +57,85 @@ Not to mention RustScan uses Adaptive Learning to improve itself over time, maki

 ## 🧋 Speed

-![fast](pictures/fast.gif)
+![fast][speed-1]

-Speed is guaranteed via RustScan. However, if you want to run a slow scan due to stealth that is possible too.
+Speed is guaranteed via RustScan. However, if you want to run a slow scan due to stealth, that is possible too.

 Firstly, let's talk code.

-We have tests that check to see if RustScan is significantly slower than the previous version. If it is, the continuous integration fails and we can't commit code to master unless we make it faster.
+We have tests that check to see if RustScan is significantly slower than the previous version. If it is, the continuous integration fails, and we can't commit code to master unless we make it faster.

-[HyperFine](https://github.com/sharkdp/hyperfine) is used to monitor RustScan's performance over time to answer the question "Are we getting faster? Are we getting slower?".
+[HyperFine][speed-2] is used to monitor RustScan's performance over time to answer the question, "Are we getting faster? Are we getting slower?".

-Every pull request is reviewed by 1 person, but more often than not 2 people review it. We test it manually and make sure the code doesn't affect performance negatively.
+Every pull request is reviewed by **one** person, but more often than not, **two** people review it. We test it manually and ensure the code doesn't negatively affect performance.

-[Read more here](https://github.com/RustScan/RustScan/wiki/Increasing-Speed-&-Accuracy).
+[Read more here][speed-3].

-## ⚙️ Extensible 
+## ⚙️ Extensible

-![scripts](pictures/scripts.gif)
+![scripts][extensible-1]

-_RustScan piping results into the custom Python script_
+### _RustScan piping results into the custom Python script_

-RustScan has a new scripting engine which allows anyone to write scripts in most languages. Python, Lua, Shell are all supported.
+RustScan has a new scripting engine that allows anyone to write scripts in most languages. Python, Lua, and Shell are all supported.

 Want to take your found ports and pipe them into Nmap for further analysis? That's possible. Want to run `smb-enum` if SMB is found open? Possible.

 The possibilities are endless -- and you can write scripts in whatever language you feel comfortable with.

-[Read more here](https://github.com/RustScan/RustScan/wiki/RustScan-Scripting-Engine).
+[Read more here][extensible-2].

 ## 🌊 Adaptive

-![adaptive](pictures/adaptive.gif)
+![adaptive][adaptive-1]

-_RustScan automatically fine-tuning itself to match the host OS_.
+### _RustScan automatically fine-tunes itself to match the host OS_

 RustScan has a cool set of features called "Adaptive Learning". These features "learn" about the environment you are scanning and how _you_ use RustScan to **improve itself over time**.

-This is an umbrella term we use for any feature that fits this criteria. The list is constantly changing, so [check out our wiki for more information](https://github.com/RustScan/RustScan/wiki/Adaptive-Learning).
+We use this umbrella term for any feature that fits this criterion. The list constantly changes, so [check out our wiki for more information][adaptive-learning].

 ## 👩‍🦯 Accessible

-![fast](pictures/accessible.gif)
+![fast][accessible-1]

-RustScan is one of the first penetration testing tools that aims to be entirely accessible. 
+RustScan is one of the first penetration testing tools that aims to be entirely accessible.

-[Most penetration testing tools are not accessible](https://bees.substack.com/p/making-hacking-accessible), which negatively affects the whole industry.
+[Most penetration testing tools are not accessible][accessible-2], which negatively affects the whole industry.

-RustScan has continuous integration testing that aims to make sure it is accessible, and we are constantly working on ways to improve our accessibility and make sure _everyone_ can use RustScan.
+RustScan has continuous integration testing that aims to ensure it is accessible, and we are constantly working on ways to improve our accessibility and ensure _everyone_ can use RustScan.

 # 📖 Full Installation Guide

-You can find our guide [here](https://github.com/RustScan/RustScan/wiki/Installation-Guide).
+You can find our guide [here][install-1].

 ## 🦊 Community Distributions

 Here are all of RustScan's community distributions.

-If you maintain a community distribution and want it listed here, leave an issue / pull request / Discord message or however you want to let us know.
+If you maintain a community distribution and want it listed here, leave an issue / pull request / Discord message or however, you want to let us know.

- [OpenSuse](https://software.opensuse.org/package/rustscan?search_term=rustscan)
- [Fedora/CentOS](https://copr.fedorainfracloud.org/coprs/atim/rustscan/)
+- [Open Suse][distributions-1]
+- [Fedora/CentOS][distributions-2]

-[![Packaging status](https://repology.org/badge/vertical-allrepos/rustscan.svg)](https://repology.org/project/rustscan/versions)
+[![Packaging status][rustscan-svg]][repology-1]

 # 🤸 Usage

-We have 2 usage guides. [Basic Usage](https://github.com/RustScan/RustScan/wiki/Usage) and [Things you may want to do](https://github.com/RustScan/RustScan/wiki/Things-you-may-want-to-do-with-RustScan-but-don't-understand-how).
+We have 2 usage guides. [Basic Usage][usage-1] and [Things you may want to do][usage-2].

-We also have documentation about our config file [here](https://github.com/RustScan/RustScan/wiki/Config-File).
+We also have documentation about our config file [here][config-file-here].

 # 🎪 Community

-[Read this to learn how to contribute](https://github.com/RustScan/RustScan/wiki/Contributing).
+[Contributing][community-1] Read this to learn how.

 ## Contributors ✨

 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
+
 [![All Contributors](https://img.shields.io/badge/all_contributors-26-orange.svg?style=flat-square)](#contributors-)
+
 <!-- ALL-CONTRIBUTORS-BADGE:END -->

 Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):
@@ -159,7 +155,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
  </tr>
  <tr>
    <td align="center"><a href="https://github.com/Atul9"><img src="https://avatars1.githubusercontent.com/u/3390330?v=4" width="100px;" alt=""/><br /><sub><b>Atul Bhosale</b></sub></a><br /><a href="https://github.com/RustScan/RustScan/commits?author=Atul9" title="Code">💻</a></td>
-    <td align="center"><a href="https://tgotwig.me"><img src="https://avatars0.githubusercontent.com/u/30773779?v=4" width="100px;" alt=""/><br /><sub><b>Thomas Gotwig</b></sub></a><br /><a href="#platform-TGotwig" title="Packaging/porting to new platform">📦</a></td>
+    <td align="center"><a href="https://tgotwig.dev"><img src="https://avatars0.githubusercontent.com/u/30773779?v=4" width="100px;" alt=""/><br /><sub><b>Thomas Gotwig</b></sub></a><br /><a href="#platform-TGotwig" title="Packaging/porting to new platform">📦</a></td>
    <td align="center"><a href="https://github.com/remigourdon"><img src="https://avatars3.githubusercontent.com/u/2874133?v=4" width="100px;" alt=""/><br /><sub><b>Rémi Gourdon</b></sub></a><br /><a href="https://github.com/RustScan/RustScan/commits?author=remigourdon" title="Documentation">📖</a> <a href="https://github.com/RustScan/RustScan/commits?author=remigourdon" title="Code">💻</a></td>
    <td align="center"><a href="https://cmnatic.co.uk"><img src="https://avatars3.githubusercontent.com/u/4163116?v=4" width="100px;" alt=""/><br /><sub><b>Ben (CMNatic)</b></sub></a><br /><a href="https://github.com/RustScan/RustScan/commits?author=cmnatic" title="Code">💻</a> <a href="https://github.com/RustScan/RustScan/commits?author=cmnatic" title="Documentation">📖</a> <a href="#design-cmnatic" title="Design">🎨</a></td>
    <td align="center"><a href="https://github.com/Ferryistaken"><img src="https://avatars3.githubusercontent.com/u/47927670?v=4" width="100px;" alt=""/><br /><sub><b>Alessandro Ferrari</b></sub></a><br /><a href="#content-Ferryistaken" title="Content">🖋</a></td>
@@ -186,6 +182,54 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d

 <!-- markdownlint-enable -->
 <!-- prettier-ignore-end -->
+
 <!-- ALL-CONTRIBUTORS-LIST:END -->

 This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!
+
+<!--Links-->
+
+[Docker]: https://hub.docker.com/r/cmnatic/rustscan "This is the recommended distribution of rustscan"
+[kali]: https://github.com/RustScan/RustScan/wiki/Installation-Guide#%EF%B8%8F-debian--kali "Read the install guide"
+[Kali/Debian]: https://github.com/RustScan/RustScan/releases "Kali Debian"
+[Arch-Linux]: https://archlinux.org/packages/extra/x86_64/rustscan/ "Arch Linux installation of Rustscan"
+[Homebrew]: https://crates.io/crates/rustscan/ "Homebrew install of Rustscan"
+[usage-1]: https://github.com/RustScan/RustScan/wiki/Usage "Basic Usage of Rustscan"
+[usage-0]: https://github.com/RustScan/RustScan/wiki/Installation-Guide#docker-whale "Use Docker Rustscan"
+[config-file-here]: https://github.com/RustScan/RustScan/wiki/Config-File "RustScan Configuration File"
+[usage-2]: https://github.com/RustScan/RustScan/wiki/Things-you-may-want-to-do-with-RustScan-but-don't-understand-how "Things you may want to do with rustscan but don't know how"
+[community-1]: https://github.com/RustScan/RustScan/wiki/Contributing "Learn how to contribute"
+[distributions-1]: https://software.opensuse.org/package/rustscan?search_term=rustscan "Open Suse rustscan distribution"
+[distributions-2]: https://copr.fedorainfracloud.org/coprs/atim/rustscan/ "Rustscan in Fedora"
+[repology-1]: https://repology.org/project/rustscan/versions "Packaging Status"
+[install-1]: https://github.com/RustScan/RustScan/wiki/Installation-Guide "Installation guide"
+[accessible-2]: https://bees.substack.com/p/making-hacking-accessible "Making Hacking Accessible"
+[extensible-2]: https://github.com/RustScan/RustScan/wiki/RustScan-Scripting-Engine "Scripting Engine"
+[speed-2]: https://github.com/sharkdp/hyperfine "Hyperfine"
+[speed-3]: https://github.com/RustScan/RustScan/wiki/Increasing-Speed-&-Accuracy "Increasing Speed & Accuracy"
+[toc-community]: https://github.com/RustScan/RustScan#-community "Community"
+[links-table-1]: https://github.com/RustScan/RustScan#-full-installation-guide "Full installation guide"
+[links-table-2]: https://rustscan.github.io/RustScan/ "Rustscan"
+[discord]: http://discord.skerritt.blog "Discord blog"
+[toc-install]: https://github.com/RustScan/RustScan/wiki/Installation-Guide "Installation Guide Wiki"
+[toc-docker-usage]: https://github.com/RustScan/RustScan/wiki/Installation-Guide#docker- "Docker Installation Guide Wiki"
+[usage-guide]: https://github.com/RustScan/RustScan#-usage
+[adaptive-learning]: https://github.com/RustScan/RustScan/wiki/Adaptive-Learning "Adaptive Learning"
+
+<!--Pictures-->
+
+[DockerPic]: https://github.com/RustScan/RustScan/blob/master/pictures/docker.png?raw=true "Docker install"
+[Kali1]: https://github.com/RustScan/RustScan/blob/master/pictures/kali.png?raw=true "Kali Picture"
+[Arch]: https://github.com/RustScan/RustScan/blob/master/pictures/arch.png?raw=true "Arch Linux"
+[Apple]: https://raw.githubusercontent.com/RustScan/RustScan/master/pictures/apple.png?size "Apple"
+[rustscan-svg]: https://repology.org/badge/vertical-allrepos/rustscan.svg "Picture of rustscan repology"
+[accessible-1]: pictures/accessible.gif "Fast"
+[adaptive-1]: pictures/adaptive.gif "Adaptive"
+[extensible-1]: pictures/scripts.gif "Scripts"
+[speed-1]: pictures/fast.gif "Speed"
+[badge-1]: https://img.shields.io/archlinux/v/extra/x86_64/rustscan?style=plastic&logo=archlinux&link=https%3A%2F%2Farchlinux.org%2Fpackages%2Fextra%2Fx86_64%2Frustscan%2F
+[badge-2]: https://img.shields.io/badge/Built%20with-Rust-Purple
+[badge-3]: https://img.shields.io/github/downloads/rustscan/rustscan/total?label=GitHub%20Downloads
+[badge-4]: https://img.shields.io/crates/d/rustscan?label=Cargo%20Downloads
+[badge-5]: https://img.shields.io/discord/754001738184392704
+[badge-6]: https://github.com/RustScan/RustScan/workflows/Continuous%20integration/badge.svg?branch=master
@@ -0,0 +1 @@
+cargo publish && cargo build --release && git add Cargo.lock && git commit -m 'Updating lock file' && gpsup
@@ -1,20 +0,0 @@
-FROM rust:latest
-
-RUN git clone https://github.com/brandonskerritt/RustScan
-WORKDIR "/RustScan"
-RUN git pull --force
-RUN cargo install cargo-deb
-
-RUN apt update -y && apt upgrade -y
-RUN apt install libc6-dev-i386 -y
-RUN git clone --depth=1 https://github.com/raspberrypi/tools /raspberrypi-tools
-ENV PATH=/raspberrypi-tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/:$PATH
-ENV CARGO_TARGET_ARM_UNKNOWN_LINUX_GNUEABIHF_LINKER=arm-linux-gnueabihf-gcc
-RUN mkdir /root/.cargo
-RUN echo "[target.arm-unknown-linux-gnueabihf]" >> /root/.cargo/config
-RUN echo "strip = { path = \"arm-linux-gnueabihf-strip\" }" >> /root/.cargo/config
-RUN echo "objcopy = { path = \"arm-linux-gnueabihf-objcopy\" }" >> /root/.cargo/config
-
-COPY ./entrypoint.sh /entrypoint.sh
-RUN chmod +x /entrypoint.sh
-ENTRYPOINT ["/entrypoint.sh"]
@@ -1,17 +0,0 @@
-#!/bin/bash
-
-cd /RustScan
-git pull --force
-
-#amd64
-cargo deb
-
-#arm64
-rustup target add arm-unknown-linux-gnueabihf
-cargo deb --target=arm-unknown-linux-gnueabihf
-
-#i386
-rustup target add i686-unknown-linux-gnu
-cargo deb --target=i686-unknown-linux-gnu
-
-find target/ -name \*.deb -exec cp {} /debs \;
@@ -1,8 +0,0 @@
-#!/bin/bash
-docker build -t rustscan-builder . || exit
-
-# This creates a volume which binds your currentdirectory/debs to 
-# the location where the deb files get spat out in the container.
-# You don't need to worry about it. Just chmod +x run.sh && ./run.sh and
-# you'll get yer .deb file in a few minutes. It runs faster after you've used it the first time.
-docker run -v "$(pwd)/debs:/debs" rustscan-builder
@@ -0,0 +1,281 @@
+//! Provides functions to parse input IP addresses, CIDRs or files.
+use std::fs::{self, File};
+use std::io::{prelude::*, BufReader};
+use std::net::{IpAddr, SocketAddr, ToSocketAddrs};
+use std::path::Path;
+use std::str::FromStr;
+
+use cidr_utils::cidr::IpCidr;
+use hickory_resolver::{
+    config::{NameServerConfig, Protocol, ResolverConfig, ResolverOpts},
+    Resolver,
+};
+use log::debug;
+
+use crate::input::Opts;
+use crate::warning;
+
+/// Parses the string(s) into IP addresses.
+///
+/// Goes through all possible IP inputs (files or via argparsing).
+///
+/// ```rust
+/// # use rustscan::input::Opts;
+/// # use rustscan::address::parse_addresses;
+/// let mut opts = Opts::default();
+/// opts.addresses = vec!["192.168.0.0/30".to_owned()];
+///
+/// let ips = parse_addresses(&opts);
+/// ```
+pub fn parse_addresses(input: &Opts) -> Vec<IpAddr> {
+    let mut ips: Vec<IpAddr> = Vec::new();
+    let mut unresolved_addresses: Vec<&str> = Vec::new();
+    let backup_resolver = get_resolver(&input.resolver);
+
+    for address in &input.addresses {
+        let parsed_ips = parse_address(address, &backup_resolver);
+        if !parsed_ips.is_empty() {
+            ips.extend(parsed_ips);
+        } else {
+            unresolved_addresses.push(address);
+        }
+    }
+
+    // If we got to this point this can only be a file path or the wrong input.
+    for file_path in unresolved_addresses {
+        let file_path = Path::new(file_path);
+
+        if !file_path.is_file() {
+            warning!(
+                format!("Host {file_path:?} could not be resolved."),
+                input.greppable,
+                input.accessible
+            );
+
+            continue;
+        }
+
+        if let Ok(x) = read_ips_from_file(file_path, &backup_resolver) {
+            ips.extend(x);
+        } else {
+            warning!(
+                format!("Host {file_path:?} could not be resolved."),
+                input.greppable,
+                input.accessible
+            );
+        }
+    }
+
+    ips
+}
+
+/// Given a string, parse it as a host, IP address, or CIDR.
+///
+/// This allows us to pass files as hosts or cidr or IPs easily
+/// Call this every time you have a possible IP-or-host.
+///
+/// If the address is a domain, we can self-resolve the domain locally
+/// or resolve it by dns resolver list.
+///
+/// ```rust
+/// # use rustscan::address::parse_address;
+/// # use hickory_resolver::Resolver;
+/// let ips = parse_address("127.0.0.1", &Resolver::default().unwrap());
+/// ```
+pub fn parse_address(address: &str, resolver: &Resolver) -> Vec<IpAddr> {
+    IpCidr::from_str(address)
+        .map(|cidr| cidr.iter().map(|c| c.address()).collect())
+        .ok()
+        .or_else(|| {
+            format!("{}:{}", &address, 80)
+                .to_socket_addrs()
+                .ok()
+                .map(|mut iter| vec![iter.next().unwrap().ip()])
+        })
+        .unwrap_or_else(|| resolve_ips_from_host(address, resolver))
+}
+
+/// Uses DNS to get the IPS associated with host
+fn resolve_ips_from_host(source: &str, backup_resolver: &Resolver) -> Vec<IpAddr> {
+    let mut ips: Vec<IpAddr> = Vec::new();
+
+    if let Ok(addrs) = source.to_socket_addrs() {
+        for ip in addrs {
+            ips.push(ip.ip());
+        }
+    } else if let Ok(addrs) = backup_resolver.lookup_ip(source) {
+        ips.extend(addrs.iter());
+    }
+
+    ips
+}
+
+/// Derive a DNS resolver.
+///
+/// 1. if the `resolver` parameter has been set:
+///     1. assume the parameter is a path and attempt to read IPs.
+///     2. parse the input as a comma-separated list of IPs.
+/// 2. if `resolver` is not set:
+///    1. attempt to derive a resolver from the system config. (e.g.
+///       `/etc/resolv.conf` on *nix).
+///    2. finally, build a CloudFlare-based resolver (default
+///       behaviour).
+fn get_resolver(resolver: &Option<String>) -> Resolver {
+    match resolver {
+        Some(r) => {
+            let mut config = ResolverConfig::new();
+            let resolver_ips = match read_resolver_from_file(r) {
+                Ok(ips) => ips,
+                Err(_) => r
+                    .split(',')
+                    .filter_map(|r| IpAddr::from_str(r).ok())
+                    .collect::<Vec<_>>(),
+            };
+            for ip in resolver_ips {
+                config.add_name_server(NameServerConfig::new(
+                    SocketAddr::new(ip, 53),
+                    Protocol::Udp,
+                ));
+            }
+            Resolver::new(config, ResolverOpts::default()).unwrap()
+        }
+        None => match Resolver::from_system_conf() {
+            Ok(resolver) => resolver,
+            Err(_) => {
+                Resolver::new(ResolverConfig::cloudflare_tls(), ResolverOpts::default()).unwrap()
+            }
+        },
+    }
+}
+
+/// Parses and input file of IPs for use in DNS resolution.
+fn read_resolver_from_file(path: &str) -> Result<Vec<IpAddr>, std::io::Error> {
+    let ips = fs::read_to_string(path)?
+        .lines()
+        .filter_map(|line| IpAddr::from_str(line.trim()).ok())
+        .collect();
+
+    Ok(ips)
+}
+
+#[cfg(not(tarpaulin_include))]
+/// Parses an input file of IPs and uses those
+fn read_ips_from_file(
+    ips: &std::path::Path,
+    backup_resolver: &Resolver,
+) -> Result<Vec<IpAddr>, std::io::Error> {
+    let file = File::open(ips)?;
+    let reader = BufReader::new(file);
+
+    let mut ips: Vec<IpAddr> = Vec::new();
+
+    for address_line in reader.lines() {
+        if let Ok(address) = address_line {
+            ips.extend(parse_address(&address, backup_resolver));
+        } else {
+            debug!("Line in file is not valid");
+        }
+    }
+
+    Ok(ips)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::{get_resolver, parse_addresses, Opts};
+    use std::net::Ipv4Addr;
+
+    #[test]
+    fn parse_correct_addresses() {
+        let mut opts = Opts::default();
+        opts.addresses = vec!["127.0.0.1".to_owned(), "192.168.0.0/30".to_owned()];
+        let ips = parse_addresses(&opts);
+
+        assert_eq!(
+            ips,
+            [
+                Ipv4Addr::new(127, 0, 0, 1),
+                Ipv4Addr::new(192, 168, 0, 0),
+                Ipv4Addr::new(192, 168, 0, 1),
+                Ipv4Addr::new(192, 168, 0, 2),
+                Ipv4Addr::new(192, 168, 0, 3)
+            ]
+        );
+    }
+
+    #[test]
+    fn parse_correct_host_addresses() {
+        let mut opts = Opts::default();
+        opts.addresses = vec!["google.com".to_owned()];
+        let ips = parse_addresses(&opts);
+
+        assert_eq!(ips.len(), 1);
+    }
+
+    #[test]
+    fn parse_correct_and_incorrect_addresses() {
+        let mut opts = Opts::default();
+        opts.addresses = vec!["127.0.0.1".to_owned(), "im_wrong".to_owned()];
+        let ips = parse_addresses(&opts);
+
+        assert_eq!(ips, [Ipv4Addr::new(127, 0, 0, 1),]);
+    }
+
+    #[test]
+    fn parse_incorrect_addresses() {
+        let mut opts = Opts::default();
+        opts.addresses = vec!["im_wrong".to_owned(), "300.10.1.1".to_owned()];
+        let ips = parse_addresses(&opts);
+
+        assert!(ips.is_empty());
+    }
+    #[test]
+    fn parse_hosts_file_and_incorrect_hosts() {
+        // Host file contains IP, Hosts, incorrect IPs, incorrect hosts
+        let mut opts = Opts::default();
+        opts.addresses = vec!["fixtures/hosts.txt".to_owned()];
+        let ips = parse_addresses(&opts);
+        assert_eq!(ips.len(), 3);
+    }
+
+    #[test]
+    fn parse_empty_hosts_file() {
+        // Host file contains IP, Hosts, incorrect IPs, incorrect hosts
+        let mut opts = Opts::default();
+        opts.addresses = vec!["fixtures/empty_hosts.txt".to_owned()];
+        let ips = parse_addresses(&opts);
+        assert_eq!(ips.len(), 0);
+    }
+
+    #[test]
+    fn parse_naughty_host_file() {
+        // Host file contains IP, Hosts, incorrect IPs, incorrect hosts
+        let mut opts = Opts::default();
+        opts.addresses = vec!["fixtures/naughty_string.txt".to_owned()];
+        let ips = parse_addresses(&opts);
+        assert_eq!(ips.len(), 0);
+    }
+
+    #[test]
+    fn resolver_default_cloudflare() {
+        let opts = Opts::default();
+
+        let resolver = get_resolver(&opts.resolver);
+        let lookup = resolver.lookup_ip("www.example.com.").unwrap();
+
+        assert!(opts.resolver.is_none());
+        assert!(lookup.iter().next().is_some());
+    }
+
+    #[test]
+    fn resolver_args_google_dns() {
+        let mut opts = Opts::default();
+        // https://developers.google.com/speed/public-dns
+        opts.resolver = Some("8.8.8.8,8.8.4.4".to_owned());
+
+        let resolver = get_resolver(&opts.resolver);
+        let lookup = resolver.lookup_ip("www.example.com.").unwrap();
+
+        assert!(lookup.iter().next().is_some());
+    }
+}
@@ -1,15 +1,20 @@
+//! Provides functionality to capture timing information for scans.
+//!
 //! # Usage
-//! ```
+//!
+//! ```rust
 //! // Initiate Benchmark vector
+//! # use rustscan::benchmark::{Benchmark, NamedTimer};
+//! # use log::info;
 //! let mut bm = Benchmark::init();
 //! // Start named timer with name
 //! let mut example_bench = NamedTimer::start("Example Bench");
 //! // Stop named timer
-//! example_bench.stop();
+//! example_bench.end();
 //! // Add named timer to Benchmarks
 //! bm.push(example_bench);
 //! // Print Benchmark Summary
-//! info!({}, bm.summary());
+//! info!("{}", bm.summary());
 //! ```
 use std::time::Instant;

@@ -43,7 +48,7 @@ impl Benchmark {
                    .unwrap()
                    .saturating_duration_since(timer.start.unwrap())
                    .as_secs_f32();
-                summary.push_str(&format!("\n{0: <10} | {1: <10}s", timer.name, runtime_secs))
+                summary.push_str(&format!("\n{0: <10} | {1: <10}s", timer.name, runtime_secs));
            }
        }
        summary
@@ -85,5 +90,5 @@ fn benchmark() {
    assert!(benchmarks
        .summary()
        .contains("\nRustScan Benchmark Summary\ntest       | 0."));
-    assert_ne!(benchmarks.summary().contains("only_start"), true);
+    assert!(!benchmarks.summary().contains("only_start"));
 }
@@ -1,37 +1,35 @@
+//! Provides a means to read, parse and hold configuration options for scans.
+use clap::{Parser, ValueEnum};
 use serde_derive::Deserialize;
 use std::collections::HashMap;
 use std::fs;
-use structopt::{clap::arg_enum, StructOpt};
+use std::path::PathBuf;

 const LOWEST_PORT_NUMBER: u16 = 1;
 const TOP_PORT_NUMBER: u16 = 65535;

-arg_enum! {
-    /// Represents the strategy in which the port scanning will run.
-    ///   - Serial will run from start to end, for example 1 to 1_000.
-    ///   - Random will randomize the order in which ports will be scanned.
-    #[derive(Deserialize, Debug, StructOpt, Clone, Copy, PartialEq)]
-    pub enum ScanOrder {
-        Serial,
-        Random,
-    }
+/// Represents the strategy in which the port scanning will run.
+///   - Serial will run from start to end, for example 1 to 1_000.
+///   - Random will randomize the order in which ports will be scanned.
+#[derive(Deserialize, Debug, ValueEnum, Clone, Copy, PartialEq, Eq)]
+pub enum ScanOrder {
+    Serial,
+    Random,
 }

-arg_enum! {
-    /// Represents the scripts variant.
-    ///   - none will avoid running any script, only portscan results will be shown.
-    ///   - default will run the default embedded nmap script, that's part of RustScan since the beginning.
-    ///   - custom will read the ScriptConfig file and the available scripts in the predefined folders
-    #[derive(Deserialize, Debug, StructOpt, Clone, PartialEq, Copy)]
-    pub enum ScriptsRequired {
-        None,
-        Default,
-        Custom,
-    }
+/// Represents the scripts variant.
+///   - none will avoid running any script, only portscan results will be shown.
+///   - default will run the default embedded nmap script, that's part of RustScan since the beginning.
+///   - custom will read the ScriptConfig file and the available scripts in the predefined folders
+#[derive(Deserialize, Debug, ValueEnum, Clone, PartialEq, Eq, Copy)]
+pub enum ScriptsRequired {
+    None,
+    Default,
+    Custom,
 }

 /// Represents the range of ports to be scanned.
-#[derive(Deserialize, Debug, Clone, PartialEq)]
+#[derive(Deserialize, Debug, Clone, PartialEq, Eq)]
 pub struct PortRange {
    pub start: u16,
    pub end: u16,
@@ -61,86 +59,107 @@ fn parse_range(input: &str) -> Result<PortRange, String> {
    }
 }

-#[derive(StructOpt, Debug, Clone)]
-#[structopt(name = "rustscan", setting = structopt::clap::AppSettings::TrailingVarArg)]
+#[derive(Parser, Debug, Clone)]
+#[command(
+    name = "rustscan",
+    version = env!("CARGO_PKG_VERSION"),
+    max_term_width = 120,
+    help_template = "{bin} {version}\n{about}\n\nUSAGE:\n    {usage}\n\nOPTIONS:\n{options}",
+)]
 #[allow(clippy::struct_excessive_bools)]
 /// Fast Port Scanner built in Rust.
 /// WARNING Do not use this program against sensitive infrastructure since the
 /// specified server may not be able to handle this many socket connections at once.
-/// - Discord https://discord.gg/GFrQsGy
-/// - GitHub https://github.com/RustScan/RustScan
+/// - Discord  <http://discord.skerritt.blog>
+/// - GitHub <https://github.com/RustScan/RustScan>
 pub struct Opts {
-    /// A list of comma separated CIDRs, IPs, or hosts to be scanned.
-    #[structopt(short, long, use_delimiter = true)]
+    /// A comma-delimited list or newline-delimited file of separated CIDRs, IPs, or hosts to be scanned.
+    #[arg(short, long, value_delimiter = ',')]
    pub addresses: Vec<String>,

-    /// A list of comma separed ports to be scanned. Example: 80,443,8080.
-    #[structopt(short, long, use_delimiter = true)]
+    /// A list of comma separated ports to be scanned. Example: 80,443,8080.
+    #[arg(short, long, value_delimiter = ',')]
    pub ports: Option<Vec<u16>>,

    /// A range of ports with format start-end. Example: 1-1000.
-    #[structopt(short, long, conflicts_with = "ports", parse(try_from_str = parse_range))]
+    #[arg(short, long, conflicts_with = "ports", value_parser = parse_range)]
    pub range: Option<PortRange>,

    /// Whether to ignore the configuration file or not.
-    #[structopt(short, long)]
+    #[arg(short, long)]
    pub no_config: bool,

+    /// Custom path to config file
+    #[arg(short, long, value_parser)]
+    pub config_path: Option<PathBuf>,
+
    /// Greppable mode. Only output the ports. No Nmap. Useful for grep or outputting to a file.
-    #[structopt(short, long)]
+    #[arg(short, long)]
    pub greppable: bool,

    /// Accessible mode. Turns off features which negatively affect screen readers.
-    #[structopt(long)]
+    #[arg(long)]
    pub accessible: bool,

+    /// A comma-delimited list or file of DNS resolvers.
+    #[arg(long)]
+    pub resolver: Option<String>,
+
    /// The batch size for port scanning, it increases or slows the speed of
    /// scanning. Depends on the open file limit of your OS.  If you do 65535
    /// it will do every port at the same time. Although, your OS may not
    /// support this.
-    #[structopt(short, long, default_value = "4500")]
+    #[arg(short, long, default_value = "4500")]
    pub batch_size: u16,

    /// The timeout in milliseconds before a port is assumed to be closed.
-    #[structopt(short, long, default_value = "1500")]
+    #[arg(short, long, default_value = "1500")]
    pub timeout: u32,

    /// The number of tries before a port is assumed to be closed.
    /// If set to 0, rustscan will correct it to 1.
-    #[structopt(long, default_value = "1")]
+    #[arg(long, default_value = "1")]
    pub tries: u8,

    /// Automatically ups the ULIMIT with the value you provided.
-    #[structopt(short, long)]
-    pub ulimit: Option<rlimit::RawRlim>,
+    #[arg(short, long)]
+    pub ulimit: Option<u64>,

    /// The order of scanning to be performed. The "serial" option will
    /// scan ports in ascending order while the "random" option will scan
    /// ports randomly.
-    #[structopt(long, possible_values = &ScanOrder::variants(), case_insensitive = true, default_value = "serial")]
+    #[arg(long, value_enum, ignore_case = true, default_value = "serial")]
    pub scan_order: ScanOrder,

    /// Level of scripting required for the run.
-    #[structopt(long, possible_values = &ScriptsRequired::variants(), case_insensitive = true, default_value = "default")]
+    #[arg(long, value_enum, ignore_case = true, default_value = "default")]
    pub scripts: ScriptsRequired,

    /// Use the top 1000 ports.
-    #[structopt(long)]
+    #[arg(long)]
    pub top: bool,

    /// The Script arguments to run.
    /// To use the argument -A, end RustScan's args with '-- -A'.
-    /// Example: 'rustscan -T 1500 -a 127.0.0.1 -- -A -sC'.
+    /// Example: 'rustscan -t 1500 -a 127.0.0.1 -- -A -sC'.
    /// This command adds -Pn -vvv -p $PORTS automatically to nmap.
-    /// For things like --script '(safe and vuln)' enclose it in quotations marks \"'(safe and vuln)'\"")
-    #[structopt(last = true)]
+    /// For things like --script '(safe and vuln)' enclose it in quotations marks \"'(safe and vuln)'\"
+    #[arg(last = true)]
    pub command: Vec<String>,
+
+    /// A list of comma separated ports to be excluded from scanning. Example: 80,443,8080.
+    #[arg(short, long, value_delimiter = ',')]
+    pub exclude_ports: Option<Vec<u16>>,
+
+    /// UDP scanning mode, finds UDP ports that send back responses
+    #[arg(long)]
+    pub udp: bool,
 }

 #[cfg(not(tarpaulin_include))]
 impl Opts {
    pub fn read() -> Self {
-        let mut opts = Opts::from_args();
+        let mut opts = Opts::parse();

        if opts.ports.is_none() && opts.range.is_none() {
            opts.range = Some(PortRange {
@@ -156,8 +175,8 @@ impl Opts {
    /// values found within the user configuration file.
    pub fn merge(&mut self, config: &Config) {
        if !self.no_config {
-            self.merge_required(&config);
-            self.merge_optional(&config);
+            self.merge_required(config);
+            self.merge_optional(config);
        }
    }

@@ -174,7 +193,7 @@ impl Opts {

        merge_required!(
            addresses, greppable, accessible, batch_size, timeout, tries, scan_order, scripts,
-            command
+            command, udp
        );
    }

@@ -191,14 +210,39 @@ impl Opts {

        // Only use top ports when the user asks for them
        if self.top && config.ports.is_some() {
-            let mut ports: Vec<u16> = Vec::with_capacity(config.ports.clone().unwrap().len());
-            for entry in config.ports.clone().unwrap().keys() {
-                ports.push(entry.parse().unwrap())
+            let mut ports: Vec<u16> = Vec::with_capacity(config.ports.as_ref().unwrap().len());
+            for entry in config.ports.as_ref().unwrap().keys() {
+                ports.push(entry.parse().unwrap());
            }
            self.ports = Some(ports);
        }

-        merge_optional!(range, ulimit);
+        merge_optional!(range, resolver, ulimit, exclude_ports);
+    }
+}
+
+impl Default for Opts {
+    fn default() -> Self {
+        Self {
+            addresses: vec![],
+            ports: None,
+            range: None,
+            greppable: true,
+            batch_size: 0,
+            timeout: 0,
+            tries: 0,
+            ulimit: None,
+            command: vec![],
+            accessible: false,
+            resolver: None,
+            scan_order: ScanOrder::Serial,
+            no_config: true,
+            top: false,
+            scripts: ScriptsRequired::Default,
+            config_path: None,
+            exclude_ports: None,
+            udp: false,
+        }
    }
 }

@@ -216,13 +260,17 @@ pub struct Config {
    batch_size: Option<u16>,
    timeout: Option<u32>,
    tries: Option<u8>,
-    ulimit: Option<rlimit::RawRlim>,
+    ulimit: Option<u64>,
+    resolver: Option<String>,
    scan_order: Option<ScanOrder>,
    command: Option<Vec<String>>,
    scripts: Option<ScriptsRequired>,
+    exclude_ports: Option<Vec<u16>>,
+    udp: Option<bool>,
 }

 #[cfg(not(tarpaulin_include))]
+#[allow(clippy::doc_link_with_quotes)]
 impl Config {
    /// Reads the configuration file with TOML format and parses it into a
    /// Config struct.
@@ -233,17 +281,14 @@ impl Config {
    /// ports = [80, 443, 8080]
    /// greppable = true
    /// scan_order: "Serial"
+    /// exclude_ports = [8080, 9090, 80]
+    /// udp = false
    ///
-    pub fn read() -> Self {
-        let mut home_dir = match dirs::home_dir() {
-            Some(dir) => dir,
-            None => panic!("Could not infer config file path."),
-        };
-        home_dir.push(".rustscan.toml");
-
+    pub fn read(custom_config_path: Option<PathBuf>) -> Self {
        let mut content = String::new();
-        if home_dir.exists() {
-            content = match fs::read_to_string(home_dir) {
+        let config_path = custom_config_path.unwrap_or_else(default_config_path);
+        if config_path.exists() {
+            content = match fs::read_to_string(config_path) {
                Ok(content) => content,
                Err(_) => String::new(),
            }
@@ -252,7 +297,7 @@ impl Config {
        let config: Config = match toml::from_str(&content) {
            Ok(config) => config,
            Err(e) => {
-                println!("Found {} in configuration file.\nAborting scan.\n", e);
+                println!("Found {e} in configuration file.\nAborting scan.\n");
                std::process::exit(1);
            }
        };
@@ -261,9 +306,22 @@ impl Config {
    }
 }

+/// Constructs default path to config toml
+pub fn default_config_path() -> PathBuf {
+    let Some(mut config_path) = dirs::home_dir() else {
+        panic!("Could not infer config file path.");
+    };
+    config_path.push(".rustscan.toml");
+    config_path
+}
+
 #[cfg(test)]
 mod tests {
+    use clap::{CommandFactory, Parser};
+    use parameterized::parameterized;
+
    use super::{Config, Opts, PortRange, ScanOrder, ScriptsRequired};
+
    impl Config {
        fn default() -> Self {
            Self {
@@ -277,31 +335,38 @@ mod tests {
                ulimit: None,
                command: Some(vec!["-A".to_owned()]),
                accessible: Some(true),
+                resolver: None,
                scan_order: Some(ScanOrder::Random),
                scripts: None,
+                exclude_ports: None,
+                udp: Some(false),
            }
        }
    }

-    impl Opts {
-        pub fn default() -> Self {
-            Self {
-                addresses: vec![],
-                ports: None,
-                range: None,
-                greppable: true,
-                batch_size: 0,
-                timeout: 0,
-                tries: 0,
-                ulimit: None,
-                command: vec![],
-                accessible: false,
-                scan_order: ScanOrder::Serial,
-                no_config: true,
-                top: false,
-                scripts: ScriptsRequired::Default,
-            }
-        }
+    #[test]
+    fn verify_cli() {
+        Opts::command().debug_assert();
+    }
+
+    #[parameterized(input = {
+        vec!["rustscan", "--addresses", "127.0.0.1"],
+        vec!["rustscan", "--addresses", "127.0.0.1", "--", "-sCV"],
+        vec!["rustscan", "--addresses", "127.0.0.1", "--", "-A"],
+        vec!["rustscan", "-t", "1500", "-a", "127.0.0.1", "--", "-A", "-sC"],
+        vec!["rustscan", "--addresses", "127.0.0.1", "--", "--script", r#""'(safe and vuln)'""#],
+    }, command = {
+        vec![],
+        vec!["-sCV".to_owned()],
+        vec!["-A".to_owned()],
+        vec!["-A".to_owned(), "-sC".to_owned()],
+        vec!["--script".to_owned(), "\"'(safe and vuln)'\"".to_owned()],
+    })]
+    fn parse_trailing_command(input: Vec<&str>, command: Vec<String>) {
+        let opts = Opts::parse_from(input);
+
+        assert_eq!(vec!["127.0.0.1".to_owned()], opts.addresses);
+        assert_eq!(command, opts.command);
    }

    #[test]
@@ -312,8 +377,8 @@ mod tests {
        opts.merge(&config);

        assert_eq!(opts.addresses, vec![] as Vec<String>);
-        assert_eq!(opts.greppable, true);
-        assert_eq!(opts.accessible, false);
+        assert!(opts.greppable);
+        assert!(!opts.accessible);
        assert_eq!(opts.timeout, 0);
        assert_eq!(opts.command, vec![] as Vec<String>);
        assert_eq!(opts.scan_order, ScanOrder::Serial);
@@ -332,7 +397,7 @@ mod tests {
        assert_eq!(opts.command, config.command.unwrap());
        assert_eq!(opts.accessible, config.accessible.unwrap());
        assert_eq!(opts.scan_order, config.scan_order.unwrap());
-        assert_eq!(opts.scripts, ScriptsRequired::Default)
+        assert_eq!(opts.scripts, ScriptsRequired::Default);
    }

    #[test]
@@ -344,10 +409,12 @@ mod tests {
            end: 1_000,
        });
        config.ulimit = Some(1_000);
+        config.resolver = Some("1.1.1.1".to_owned());

        opts.merge_optional(&config);

        assert_eq!(opts.range, config.range);
        assert_eq!(opts.ulimit, config.ulimit);
+        assert_eq!(opts.resolver, config.resolver);
    }
 }
@@ -0,0 +1,58 @@
+//! This crate exposes the internal functionality of the
+//! [RustScan](https://rustscan.github.io/RustScan) port scanner.
+//!
+//! ## Example: perform a scan against localhost
+//!
+//! The core scanning behaviour is managed by
+//! [`Scanner`](crate::scanner::Scanner) which in turn requires a
+//! [`PortStrategy`](crate::port_strategy::PortStrategy):
+//!
+//! ```rust
+//! use async_std::task::block_on;
+//! use std::{net::IpAddr, time::Duration};
+//!
+//! use rustscan::input::{PortRange, ScanOrder};
+//! use rustscan::port_strategy::PortStrategy;
+//! use rustscan::scanner::Scanner;
+//!
+//! fn main() {
+//!     let addrs = vec!["127.0.0.1".parse::<IpAddr>().unwrap()];
+//!     let range = PortRange {
+//!         start: 1,
+//!         end: 1_000,
+//!     };
+//!     let strategy = PortStrategy::pick(&Some(range), None, ScanOrder::Random);
+//!     let scanner = Scanner::new(
+//!         &addrs,
+//!         10,
+//!         Duration::from_millis(100),
+//!         1,
+//!         true,
+//!         strategy,
+//!         true,
+//!         vec![9000],
+//!         false,
+//!     );
+//!
+//!     let scan_result = block_on(scanner.run());
+//!
+//!     println!("{:?}", scan_result);
+//! }
+//! ```
+#![allow(clippy::needless_doctest_main)]
+
+pub mod tui;
+
+pub mod input;
+
+pub mod scanner;
+
+pub mod port_strategy;
+
+pub mod benchmark;
+
+pub mod scripts;
+
+pub mod address;
+
+pub mod udp_packets;
@@ -2,49 +2,30 @@
 #![warn(clippy::pedantic)]
 #![allow(clippy::doc_markdown, clippy::if_not_else, clippy::non_ascii_literal)]

-extern crate shell_words;
+use rustscan::benchmark::{Benchmark, NamedTimer};
+use rustscan::input::{self, Config, Opts, ScriptsRequired};
+use rustscan::port_strategy::PortStrategy;
+use rustscan::scanner::Scanner;
+use rustscan::scripts::{init_scripts, Script, ScriptFile};
+use rustscan::{detail, funny_opening, output, warning};

-mod tui;
-
-mod input;
-use input::{Config, Opts, PortRange, ScanOrder, ScriptsRequired};
-
-mod scanner;
-use scanner::Scanner;
-
-mod port_strategy;
-use port_strategy::PortStrategy;
-
-mod benchmark;
-use benchmark::{Benchmark, NamedTimer};
-
-mod scripts;
-use scripts::{init_scripts, Script, ScriptFile};
-
-use cidr_utils::cidr::IpCidr;
 use colorful::{Color, Colorful};
 use futures::executor::block_on;
-use rlimit::{getrlimit, setrlimit, RawRlim, Resource, Rlim};
 use std::collections::HashMap;
-use std::convert::TryInto;
-use std::fs::File;
-use std::io::{prelude::*, BufReader};
-use std::net::{IpAddr, ToSocketAddrs};
-use std::path::Path;
+use std::net::IpAddr;
 use std::string::ToString;
 use std::time::Duration;
-use trust_dns_resolver::{
-    config::{ResolverConfig, ResolverOpts},
-    Resolver,
-};
+
+use rustscan::address::parse_addresses;

 extern crate colorful;
 extern crate dirs;

 // Average value for Ubuntu
-const DEFAULT_FILE_DESCRIPTORS_LIMIT: RawRlim = 8000;
+#[cfg(unix)]
+const DEFAULT_FILE_DESCRIPTORS_LIMIT: u64 = 8000;
 // Safest batch size based on experimentation
-const AVERAGE_BATCH_SIZE: RawRlim = 3000;
+const AVERAGE_BATCH_SIZE: u16 = 3000;

 #[macro_use]
 extern crate log;
@@ -59,7 +40,7 @@ fn main() {
    let mut rustscan_bench = NamedTimer::start("RustScan");

    let mut opts: Opts = Opts::read();
-    let config = Config::read();
+    let config = Config::read(opts.config_path.clone());
    opts.merge(&config);

    debug!("Main() `opts` arguments are {:?}", opts);
@@ -68,7 +49,7 @@ fn main() {
        Ok(scripts_to_run) => scripts_to_run,
        Err(e) => {
            warning!(
-                format!("Initiating scripts failed!\n{}", e),
+                format!("Initiating scripts failed!\n{e}"),
                opts.greppable,
                opts.accessible
            );
@@ -93,9 +74,17 @@ fn main() {
        std::process::exit(1);
    }

-    let ulimit: RawRlim = adjust_ulimit_size(&opts);
-    let batch_size: u16 = infer_batch_size(&opts, ulimit);
+    #[cfg(unix)]
+    let batch_size: u16 = infer_batch_size(&opts, adjust_ulimit_size(&opts));

+    #[cfg(not(unix))]
+    let batch_size: u16 = AVERAGE_BATCH_SIZE;
+
+    // Added by wasuaje - 01/26/2024:
+    // exclude_ports  is an exclusion port list
+    //
+    // Added by brendanglancy - 5/19/2024:
+    // udp is an option to do a udp scan
    let scanner = Scanner::new(
        &ips,
        batch_size,
@@ -104,6 +93,8 @@ fn main() {
        opts.greppable,
        PortStrategy::pick(&opts.range, opts.ports, opts.scan_order),
        opts.accessible,
+        opts.exclude_ports.unwrap_or_default(),
+        opts.udp,
    );
    debug!("Scanner finished building: {:?}", scanner);

@@ -187,7 +178,7 @@ fn main() {
                    detail!(script_result.to_string(), opts.greppable, opts.accessible);
                }
                Err(e) => {
-                    warning!(&format!("Error {}", e), opts.greppable, opts.accessible);
+                    warning!(&format!("Error {e}"), opts.greppable, opts.accessible);
                }
            }
        }
@@ -203,137 +194,48 @@ fn main() {
 }

 /// Prints the opening title of RustScan
+#[allow(clippy::items_after_statements, clippy::needless_raw_string_hashes)]
 fn print_opening(opts: &Opts) {
    debug!("Printing opening");
-    let s = r#".----. .-. .-. .----..---.  .----. .---.   .--.  .-. .-.
-| {}  }| { } |{ {__ {_   _}{ {__  /  ___} / {} \ |  `| |
-| .-. \| {_} |.-._} } | |  .-._} }\     }/  /\  \| |\  |
-`-' `-'`-----'`----'  `-'  `----'  `---' `-'  `-'`-' `-'
-The Modern Day Port Scanner."#;
+    let s = format!(
+        "{}\n{}\n{}\n{}\n{}",
+        r#".----. .-. .-. .----..---.  .----. .---.   .--.  .-. .-."#,
+        r#"| {}  }| { } |{ {__ {_   _}{ {__  /  ___} / {} \ |  `| |"#,
+        r#"| .-. \| {_} |.-._} } | |  .-._} }\     }/  /\  \| |\  |"#,
+        r#"`-' `-'`-----'`----'  `-'  `----'  `---' `-'  `-'`-' `-'"#,
+        r#"The Modern Day Port Scanner."#
+    );
    println!("{}", s.gradient(Color::Green).bold());
-    let info = r#"________________________________________
-: https://discord.gg/GFrQsGy           :
-: https://github.com/RustScan/RustScan :
- --------------------------------------"#;
+    let info = format!(
+        "{}\n{}\n{}\n{}",
+        r#"________________________________________"#,
+        r#": http://discord.skerritt.blog         :"#,
+        r#": https://github.com/RustScan/RustScan :"#,
+        r#" --------------------------------------"#
+    );
    println!("{}", info.gradient(Color::Yellow).bold());
    funny_opening!();

-    let config_path = dirs::home_dir()
-        .expect("Could not infer config file path.")
-        .join(".rustscan.toml");
+    let config_path = opts
+        .config_path
+        .clone()
+        .unwrap_or_else(input::default_config_path);

    detail!(
-        format!("The config file is expected to be at {:?}", config_path),
+        format!("The config file is expected to be at {config_path:?}"),
        opts.greppable,
        opts.accessible
    );
 }

-/// Goes through all possible IP inputs (files or via argparsing)
-/// Parses the string(s) into IPs
-fn parse_addresses(input: &Opts) -> Vec<IpAddr> {
-    let mut ips: Vec<IpAddr> = Vec::new();
-    let mut unresolved_addresses: Vec<&str> = Vec::new();
-    let backup_resolver =
-        Resolver::new(ResolverConfig::cloudflare_tls(), ResolverOpts::default()).unwrap();
+#[cfg(unix)]
+fn adjust_ulimit_size(opts: &Opts) -> u64 {
+    use rlimit::Resource;

-    for address in &input.addresses {
-        let parsed_ips = parse_address(address, &backup_resolver);
-        if !parsed_ips.is_empty() {
-            ips.extend(parsed_ips);
-        } else {
-            unresolved_addresses.push(address);
-        }
-    }
-
-    // If we got to this point this can only be a file path or the wrong input.
-    for file_path in unresolved_addresses {
-        let file_path = Path::new(file_path);
-
-        if !file_path.is_file() {
-            warning!(
-                format!("Host {:?} could not be resolved.", file_path),
-                input.greppable,
-                input.accessible
-            );
-
-            continue;
-        }
-
-        if let Ok(x) = read_ips_from_file(file_path, &backup_resolver) {
-            ips.extend(x);
-        } else {
-            warning!(
-                format!("Host {:?} could not be resolved.", file_path),
-                input.greppable,
-                input.accessible
-            );
-        }
-    }
-
-    ips
-}
-
-/// Given a string, parse it as an host, IP address, or CIDR.
-/// This allows us to pass files as hosts or cidr or IPs easily
-/// Call this everytime you have a possible IP_or_host
-fn parse_address(address: &str, resolver: &Resolver) -> Vec<IpAddr> {
-    IpCidr::from_str(&address)
-        .map(|cidr| cidr.iter().collect())
-        .ok()
-        .or_else(|| {
-            format!("{}:{}", &address, 80)
-                .to_socket_addrs()
-                .ok()
-                .map(|mut iter| vec![iter.next().unwrap().ip()])
-        })
-        .unwrap_or_else(|| resolve_ips_from_host(address, resolver))
-}
-
-/// Uses DNS to get the IPS assiocated with host
-fn resolve_ips_from_host(source: &str, backup_resolver: &Resolver) -> Vec<IpAddr> {
-    let mut ips: Vec<std::net::IpAddr> = Vec::new();
-
-    if let Ok(addrs) = source.to_socket_addrs() {
-        for ip in addrs {
-            ips.push(ip.ip());
-        }
-    } else if let Ok(addrs) = backup_resolver.lookup_ip(source) {
-        ips.extend(addrs.iter());
-    }
-
-    ips
-}
-
-#[cfg(not(tarpaulin_include))]
-/// Parses an input file of IPs and uses those
-fn read_ips_from_file(
-    ips: &std::path::Path,
-    backup_resolver: &Resolver,
-) -> Result<Vec<std::net::IpAddr>, std::io::Error> {
-    let file = File::open(ips)?;
-    let reader = BufReader::new(file);
-
-    let mut ips: Vec<std::net::IpAddr> = Vec::new();
-
-    for address_line in reader.lines() {
-        if let Ok(address) = address_line {
-            ips.extend(parse_address(&address, backup_resolver));
-        } else {
-            debug!("Line in file is not valid");
-        }
-    }
-
-    Ok(ips)
-}
-
-fn adjust_ulimit_size(opts: &Opts) -> RawRlim {
-    if opts.ulimit.is_some() {
-        let limit: Rlim = Rlim::from_raw(opts.ulimit.unwrap());
-
-        if setrlimit(Resource::NOFILE, limit, limit).is_ok() {
+    if let Some(limit) = opts.ulimit {
+        if Resource::NOFILE.set(limit, limit).is_ok() {
            detail!(
-                format!("Automatically increasing ulimit value to {}.", limit),
+                format!("Automatically increasing ulimit value to {limit}."),
                opts.greppable,
                opts.accessible
            );
@@ -346,13 +248,15 @@ fn adjust_ulimit_size(opts: &Opts) -> RawRlim {
        }
    }

-    let (rlim, _) = getrlimit(Resource::NOFILE).unwrap();
-
-    rlim.as_raw()
+    let (soft, _) = Resource::NOFILE.get().unwrap();
+    soft
 }

-fn infer_batch_size(opts: &Opts, ulimit: RawRlim) -> u16 {
-    let mut batch_size: RawRlim = opts.batch_size.into();
+#[cfg(unix)]
+fn infer_batch_size(opts: &Opts, ulimit: u64) -> u16 {
+    use std::convert::TryInto;
+
+    let mut batch_size: u64 = opts.batch_size.into();

    // Adjust the batch size when the ulimit value is lower than the desired batch size
    if ulimit < batch_size {
@@ -363,7 +267,7 @@ fn infer_batch_size(opts: &Opts, ulimit: RawRlim) -> u16 {
        // When the OS supports high file limits like 8000, but the user
        // selected a batch size higher than this we should reduce it to
        // a lower number.
-        if ulimit < AVERAGE_BATCH_SIZE {
+        if ulimit < AVERAGE_BATCH_SIZE.into() {
            // ulimit is smaller than aveage batch size
            // user must have very small ulimit
            // decrease batch size to half of ulimit
@@ -372,7 +276,7 @@ fn infer_batch_size(opts: &Opts, ulimit: RawRlim) -> u16 {
            batch_size = ulimit / 2;
        } else if ulimit > DEFAULT_FILE_DESCRIPTORS_LIMIT {
            info!("Batch size is now average batch size");
-            batch_size = AVERAGE_BATCH_SIZE;
+            batch_size = AVERAGE_BATCH_SIZE.into();
        } else {
            batch_size = ulimit - 100;
        }
@@ -391,10 +295,12 @@ fn infer_batch_size(opts: &Opts, ulimit: RawRlim) -> u16 {

 #[cfg(test)]
 mod tests {
-    use crate::{adjust_ulimit_size, infer_batch_size, parse_addresses, print_opening, Opts};
-    use std::net::Ipv4Addr;
+    #[cfg(unix)]
+    use super::{adjust_ulimit_size, infer_batch_size};
+    use super::{print_opening, Opts};

    #[test]
+    #[cfg(unix)]
    fn batch_size_lowered() {
        let mut opts = Opts::default();
        opts.batch_size = 50_000;
@@ -404,6 +310,7 @@ mod tests {
    }

    #[test]
+    #[cfg(unix)]
    fn batch_size_lowered_average_size() {
        let mut opts = Opts::default();
        opts.batch_size = 50_000;
@@ -412,6 +319,7 @@ mod tests {
        assert!(batch_size == 3_000);
    }
    #[test]
+    #[cfg(unix)]
    fn batch_size_equals_ulimit_lowered() {
        // because ulimit and batch size are same size, batch size is lowered
        // to ULIMIT - 100
@@ -422,6 +330,7 @@ mod tests {
        assert!(batch_size == 4_900);
    }
    #[test]
+    #[cfg(unix)]
    fn batch_size_adjusted_2000() {
        // ulimit == batch_size
        let mut opts = Opts::default();
@@ -431,15 +340,9 @@ mod tests {

        assert!(batch_size == 2_000);
    }
-    #[test]
-    fn test_print_opening_no_panic() {
-        let mut opts = Opts::default();
-        opts.ulimit = Some(2_000);
-        // print opening should not panic
-        print_opening(&opts);
-    }

    #[test]
+    #[cfg(unix)]
    fn test_high_ulimit_no_greppable_mode() {
        let mut opts = Opts::default();
        opts.batch_size = 10;
@@ -451,73 +354,10 @@ mod tests {
    }

    #[test]
-    fn parse_correct_addresses() {
+    fn test_print_opening_no_panic() {
        let mut opts = Opts::default();
-        opts.addresses = vec!["127.0.0.1".to_owned(), "192.168.0.0/30".to_owned()];
-        let ips = parse_addresses(&opts);
-
-        assert_eq!(
-            ips,
-            [
-                Ipv4Addr::new(127, 0, 0, 1),
-                Ipv4Addr::new(192, 168, 0, 0),
-                Ipv4Addr::new(192, 168, 0, 1),
-                Ipv4Addr::new(192, 168, 0, 2),
-                Ipv4Addr::new(192, 168, 0, 3)
-            ]
-        );
-    }
-
-    #[test]
-    fn parse_correct_host_addresses() {
-        let mut opts = Opts::default();
-        opts.addresses = vec!["google.com".to_owned()];
-        let ips = parse_addresses(&opts);
-
-        assert_eq!(ips.len(), 1);
-    }
-
-    #[test]
-    fn parse_correct_and_incorrect_addresses() {
-        let mut opts = Opts::default();
-        opts.addresses = vec!["127.0.0.1".to_owned(), "im_wrong".to_owned()];
-        let ips = parse_addresses(&opts);
-
-        assert_eq!(ips, [Ipv4Addr::new(127, 0, 0, 1),]);
-    }
-
-    #[test]
-    fn parse_incorrect_addresses() {
-        let mut opts = Opts::default();
-        opts.addresses = vec!["im_wrong".to_owned(), "300.10.1.1".to_owned()];
-        let ips = parse_addresses(&opts);
-
-        assert_eq!(ips.is_empty(), true);
-    }
-    #[test]
-    fn parse_hosts_file_and_incorrect_hosts() {
-        // Host file contains IP, Hosts, incorrect IPs, incorrect hosts
-        let mut opts = Opts::default();
-        opts.addresses = vec!["fixtures/hosts.txt".to_owned()];
-        let ips = parse_addresses(&opts);
-        assert_eq!(ips.len(), 3);
-    }
-
-    #[test]
-    fn parse_empty_hosts_file() {
-        // Host file contains IP, Hosts, incorrect IPs, incorrect hosts
-        let mut opts = Opts::default();
-        opts.addresses = vec!["fixtures/empty_hosts.txt".to_owned()];
-        let ips = parse_addresses(&opts);
-        assert_eq!(ips.len(), 0);
-    }
-
-    #[test]
-    fn parse_naughty_host_file() {
-        // Host file contains IP, Hosts, incorrect IPs, incorrect hosts
-        let mut opts = Opts::default();
-        opts.addresses = vec!["fixtures/naughty_string.txt".to_owned()];
-        let ips = parse_addresses(&opts);
-        assert_eq!(ips.len(), 0);
+        opts.ulimit = Some(2_000);
+        // print opening should not panic
+        print_opening(&opts);
    }
 }
@@ -1,5 +1,6 @@
+//! Provides a means to hold configuration options specifically for port scanning.
 mod range_iterator;
-use super::{PortRange, ScanOrder};
+use crate::input::{PortRange, ScanOrder};
 use rand::seq::SliceRandom;
 use rand::thread_rng;
 use range_iterator::RangeIterator;
@@ -44,7 +45,7 @@ impl PortStrategy {

    pub fn order(&self) -> Vec<u16> {
        match self {
-            PortStrategy::Manual(ports) => ports.to_vec(),
+            PortStrategy::Manual(ports) => ports.clone(),
            PortStrategy::Serial(range) => range.generate(),
            PortStrategy::Random(range) => range.generate(),
        }
@@ -67,7 +68,7 @@ pub struct SerialRange {

 impl RangeOrder for SerialRange {
    fn generate(&self) -> Vec<u16> {
-        (self.start..self.end).collect()
+        (self.start..=self.end).collect()
    }
 }

@@ -97,14 +98,14 @@ impl RangeOrder for RandomRange {
 #[cfg(test)]
 mod tests {
    use super::PortStrategy;
-    use crate::{PortRange, ScanOrder};
+    use crate::input::{PortRange, ScanOrder};

    #[test]
    fn serial_strategy_with_range() {
        let range = PortRange { start: 1, end: 100 };
        let strategy = PortStrategy::pick(&Some(range), None, ScanOrder::Serial);
        let result = strategy.order();
-        let expected_range = (1..100).into_iter().collect::<Vec<u16>>();
+        let expected_range = (1..=100).into_iter().collect::<Vec<u16>>();
        assert_eq!(expected_range, result);
    }
    #[test]
@@ -112,10 +113,10 @@ mod tests {
        let range = PortRange { start: 1, end: 100 };
        let strategy = PortStrategy::pick(&Some(range), None, ScanOrder::Random);
        let mut result = strategy.order();
-        let expected_range = (1..100).into_iter().collect::<Vec<u16>>();
+        let expected_range = (1..=100).into_iter().collect::<Vec<u16>>();
        assert_ne!(expected_range, result);

-        result.sort();
+        result.sort_unstable();
        assert_eq!(expected_range, result);
    }

@@ -133,7 +134,7 @@ mod tests {
        let expected_range = (1..10).into_iter().collect::<Vec<u16>>();
        assert_ne!(expected_range, result);

-        result.sort();
+        result.sort_unstable();
        assert_eq!(expected_range, result);
    }
 }
@@ -13,22 +13,22 @@ pub struct RangeIterator {

 /// An iterator that follows the `Linear Congruential Generator` algorithm.
 ///
-/// For more information: https://en.wikipedia.org/wiki/Linear_congruential_generator
+/// For more information: <https://en.wikipedia.org/wiki/Linear_congruential_generator>
 impl RangeIterator {
-    /// Receives the the start and end of a range and normalize
+    /// Receives the start and end of a range and normalize
    /// these values before selecting a coprime for the end of the range
    /// which will server as the step for the algorithm.
    ///
    /// For example, the range `1000-2500` will be normalized to `0-1500`
    /// before going through the algorithm.
    pub fn new(start: u32, end: u32) -> Self {
-        let normalized_end = end - start;
+        let normalized_end = end - start + 1;
        let step = pick_random_coprime(normalized_end);

        // Randomly choose a number within the range to be the first
        // and assign it as a pick.
        let mut rng = rand::thread_rng();
-        let normalized_first_pick = rng.gen_range(0, normalized_end);
+        let normalized_first_pick = rng.gen_range(0..normalized_end);

        Self {
            active: true,
@@ -84,14 +84,13 @@ fn pick_random_coprime(end: u32) -> u32 {
    let lower_range = range_boundary;
    let upper_range = end - range_boundary;
    let mut rng = rand::thread_rng();
-    let mut candidate = rng.gen_range(lower_range, upper_range);
+    let mut candidate = rng.gen_range(lower_range..upper_range);

    for _ in 0..10 {
        if end.gcd(candidate) == 1 {
            return candidate;
-        } else {
-            candidate = rng.gen_range(lower_range, upper_range);
        }
+        candidate = rng.gen_range(lower_range..upper_range);
    }

    end - 1
@@ -104,30 +103,30 @@ mod tests {
    #[test]
    fn range_iterator_iterates_through_the_entire_range() {
        let result = generate_sorted_range(1, 10);
-        let expected_range = (1..10).into_iter().collect::<Vec<u16>>();
+        let expected_range = (1..=10).into_iter().collect::<Vec<u16>>();
        assert_eq!(expected_range, result);

        let result = generate_sorted_range(1, 100);
-        let expected_range = (1..100).into_iter().collect::<Vec<u16>>();
+        let expected_range = (1..=100).into_iter().collect::<Vec<u16>>();
        assert_eq!(expected_range, result);

        let result = generate_sorted_range(1, 1000);
-        let expected_range = (1..1000).into_iter().collect::<Vec<u16>>();
+        let expected_range = (1..=1000).into_iter().collect::<Vec<u16>>();
        assert_eq!(expected_range, result);

        let result = generate_sorted_range(1, 65_535);
-        let expected_range = (1..65_535).into_iter().collect::<Vec<u16>>();
+        let expected_range = (1..=65_535).into_iter().collect::<Vec<u16>>();
        assert_eq!(expected_range, result);

        let result = generate_sorted_range(1000, 2000);
-        let expected_range = (1000..2000).into_iter().collect::<Vec<u16>>();
+        let expected_range = (1000..=2000).into_iter().collect::<Vec<u16>>();
        assert_eq!(expected_range, result);
    }

    fn generate_sorted_range(start: u32, end: u32) -> Vec<u16> {
        let range = RangeIterator::new(start, end);
        let mut result = range.into_iter().collect::<Vec<u16>>();
-        result.sort();
+        result.sort_unstable();

        result
    }
@@ -1,11 +1,14 @@
-use super::PortStrategy;
+//! Core functionality for actual scanning behaviour.
+use crate::port_strategy::PortStrategy;
+use crate::udp_packets::udp_payload::cust_payload;
+use log::debug;

 mod socket_iterator;
 use socket_iterator::SocketIterator;

-use async_std::io;
 use async_std::net::TcpStream;
 use async_std::prelude::*;
+use async_std::{io, net::UdpSocket};
 use colored::Colorize;
 use futures::stream::FuturesUnordered;
 use std::{
@@ -21,6 +24,8 @@ use std::{
 /// batch_size is how many ports at a time should be scanned
 /// Timeout is the time RustScan should wait before declaring a port closed. As datatype Duration.
 /// greppable is whether or not RustScan should print things, or wait until the end to print only the ip and open ports.
+/// Added by wasuaje - 01/26/2024:
+///     exclude_ports  is an exclusion port list
 #[cfg(not(tarpaulin_include))]
 #[derive(Debug)]
 pub struct Scanner {
@@ -31,8 +36,12 @@ pub struct Scanner {
    greppable: bool,
    port_strategy: PortStrategy,
    accessible: bool,
+    exclude_ports: Vec<u16>,
+    udp: bool,
 }

+// Allowing too many arguments for clippy.
+#[allow(clippy::too_many_arguments)]
 impl Scanner {
    pub fn new(
        ips: &[IpAddr],
@@ -42,6 +51,8 @@ impl Scanner {
        greppable: bool,
        port_strategy: PortStrategy,
        accessible: bool,
+        exclude_ports: Vec<u16>,
+        udp: bool,
    ) -> Self {
        Self {
            batch_size,
@@ -51,18 +62,28 @@ impl Scanner {
            port_strategy,
            ips: ips.iter().map(ToOwned::to_owned).collect(),
            accessible,
+            exclude_ports,
+            udp,
        }
    }

    /// Runs scan_range with chunk sizes
    /// If you want to run RustScan normally, this is the entry point used
-    /// Returns all open ports as Vec<u16>
+    /// Returns all open ports as `Vec<u16>`
+    /// Added by wasuaje - 01/26/2024:
+    ///    Filtering port against exclude port list
    pub async fn run(&self) -> Vec<SocketAddr> {
-        let ports: Vec<u16> = self.port_strategy.order();
+        let ports: Vec<u16> = self
+            .port_strategy
+            .order()
+            .iter()
+            .filter(|&port| !self.exclude_ports.contains(port))
+            .copied()
+            .collect();
        let mut socket_iterator: SocketIterator = SocketIterator::new(&self.ips, &ports);
        let mut open_sockets: Vec<SocketAddr> = Vec::new();
        let mut ftrs = FuturesUnordered::new();
-        let mut errors: HashSet<String> = HashSet::with_capacity(self.ips.len() * 1000);
+        let mut errors: HashSet<String> = HashSet::new();

        for _ in 0..self.batch_size {
            if let Some(socket) = socket_iterator.next() {
@@ -72,7 +93,7 @@ impl Scanner {
            }
        }

-        debug!("Start scanning sockets. \nBatch size {}\nNumber of ip-s {}\nNumber of ports {}\nTargets all together {} ", 
+        debug!("Start scanning sockets. \nBatch size {}\nNumber of ip-s {}\nNumber of ports {}\nTargets all together {} ",
            self.batch_size,
            self.ips.len(),
            &ports.len(),
@@ -100,36 +121,45 @@ impl Scanner {

    /// Given a socket, scan it self.tries times.
    /// Turns the address into a SocketAddr
-    /// Deals with the <result> type
+    /// Deals with the `<result>` type
    /// If it experiences error ErrorKind::Other then too many files are open and it Panics!
    /// Else any other error, it returns the error in Result as a string
    /// If no errors occur, it returns the port number in Result to signify the port is open.
    /// This function mainly deals with the logic of Results handling.
    /// # Example
    ///
-    ///     self.scan_socket(socket)
+    /// ```compile_fail
+    /// scanner.scan_socket(socket)
+    /// ```
    ///
    /// Note: `self` must contain `self.ip`.
    async fn scan_socket(&self, socket: SocketAddr) -> io::Result<SocketAddr> {
-        let tries = self.tries.get();
+        if self.udp {
+            let payload = cust_payload(socket.port());

+            let tries = self.tries.get();
+            for _ in 1..=tries {
+                match self.udp_scan(socket, &payload, self.timeout).await {
+                    Ok(true) => return Ok(socket),
+                    Ok(false) => continue,
+                    Err(e) => return Err(e),
+                }
+            }
+            return Ok(socket);
+        }
+
+        let tries = self.tries.get();
        for nr_try in 1..=tries {
            match self.connect(socket).await {
-                Ok(x) => {
+                Ok(tcp_stream) => {
                    debug!(
                        "Connection was successful, shutting down stream {}",
                        &socket
                    );
-                    if let Err(e) = x.shutdown(Shutdown::Both) {
+                    if let Err(e) = tcp_stream.shutdown(Shutdown::Both) {
                        debug!("Shutdown stream error {}", &e);
                    }
-                    if !self.greppable {
-                        if self.accessible {
-                            println!("Open {}", socket.to_string());
-                        } else {
-                            println!("Open {}", socket.to_string().purple());
-                        }
-                    }
+                    self.fmt_ports(socket);

                    debug!("Return Ok after {} tries", nr_try);
                    return Ok(socket);
@@ -137,9 +167,7 @@ impl Scanner {
                Err(e) => {
                    let mut error_string = e.to_string();

-                    if error_string.to_lowercase().contains("too many open files") {
-                        panic!("Too many open files. Please reduce batch size. The default is 5000. Try -b 2500.");
-                    }
+                    assert!(!error_string.to_lowercase().contains("too many open files"), "Too many open files. Please reduce batch size. The default is 5000. Try -b 2500.");

                    if nr_try == tries {
                        error_string.push(' ');
@@ -155,13 +183,16 @@ impl Scanner {
    /// Performs the connection to the socket with timeout
    /// # Example
    ///
-    ///     let port: u16 = 80
-    ///     // ip is an IpAddr type
-    ///     let ip = IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1));
-    ///     let socket = SocketAddr::new(ip, port);
-    ///     self.connect(socket)
-    ///     // returns Result which is either Ok(stream) for port is open, or Er for port is closed.
-    ///     // Timeout occurs after self.timeout seconds
+    /// ```compile_fail
+    /// # use std::net::{IpAddr, Ipv6Addr, SocketAddr};
+    /// let port: u16 = 80;
+    /// // ip is an IpAddr type
+    /// let ip = IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1));
+    /// let socket = SocketAddr::new(ip, port);
+    /// scanner.connect(socket);
+    /// // returns Result which is either Ok(stream) for port is open, or Er for port is closed.
+    /// // Timeout occurs after self.timeout seconds
+    /// ```
    ///
    async fn connect(&self, socket: SocketAddr) -> io::Result<TcpStream> {
        let stream = io::timeout(
@@ -171,12 +202,96 @@ impl Scanner {
        .await?;
        Ok(stream)
    }
+
+    /// Binds to a UDP socket so we can send and recieve packets
+    /// # Example
+    ///
+    /// ```compile_fail
+    /// # use std::net::{IpAddr, Ipv6Addr, SocketAddr};
+    /// let port: u16 = 80;
+    /// // ip is an IpAddr type
+    /// let ip = IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1));
+    /// let socket = SocketAddr::new(ip, port);
+    /// scanner.udp_bind(socket);
+    /// // returns Result which is either Ok(stream) for port is open, or Err for port is closed.
+    /// // Timeout occurs after self.timeout seconds
+    /// ```
+    ///
+    async fn udp_bind(&self, socket: SocketAddr) -> io::Result<UdpSocket> {
+        let local_addr = match socket {
+            SocketAddr::V4(_) => "0.0.0.0:0".parse::<SocketAddr>().unwrap(),
+            SocketAddr::V6(_) => "[::]:0".parse::<SocketAddr>().unwrap(),
+        };
+
+        UdpSocket::bind(local_addr).await
+    }
+
+    /// Performs a UDP scan on the specified socket with a payload and wait duration
+    /// # Example
+    ///
+    /// ```compile_fail
+    /// # use std::net::{IpAddr, Ipv6Addr, SocketAddr};
+    /// # use std::time::Duration;
+    /// let port: u16 = 123;
+    /// // ip is an IpAddr type
+    /// let ip = IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1));
+    /// let socket = SocketAddr::new(ip, port);
+    /// let payload = vec![0, 1, 2, 3];
+    /// let wait = Duration::from_secs(1);
+    /// let result = scanner.udp_scan(socket, payload, wait).await;
+    /// // returns Result which is either Ok(true) if response received, or Ok(false) if timed out.
+    /// // Err is returned for other I/O errors.
+    async fn udp_scan(
+        &self,
+        socket: SocketAddr,
+        payload: &[u8],
+        wait: Duration,
+    ) -> io::Result<bool> {
+        match self.udp_bind(socket).await {
+            Ok(udp_socket) => {
+                let mut buf = [0u8; 1024];
+
+                udp_socket.connect(socket).await?;
+                udp_socket.send(payload).await?;
+
+                match io::timeout(wait, udp_socket.recv(&mut buf)).await {
+                    Ok(size) => {
+                        debug!("Received {} bytes", size);
+                        self.fmt_ports(socket);
+                        Ok(true)
+                    }
+                    Err(e) => {
+                        if e.kind() == io::ErrorKind::TimedOut {
+                            Ok(false)
+                        } else {
+                            Err(e)
+                        }
+                    }
+                }
+            }
+            Err(e) => {
+                println!("Err E binding sock {:?}", e);
+                Err(e)
+            }
+        }
+    }
+
+    /// Formats and prints the port status
+    fn fmt_ports(&self, socket: SocketAddr) {
+        if !self.greppable {
+            if self.accessible {
+                println!("Open {socket}");
+            } else {
+                println!("Open {}", socket.to_string().purple());
+            }
+        }
+    }
 }

 #[cfg(test)]
 mod tests {
    use super::*;
-    use crate::{PortRange, ScanOrder};
+    use crate::input::{PortRange, ScanOrder};
    use async_std::task::block_on;
    use std::{net::IpAddr, time::Duration};

@@ -197,6 +312,8 @@ mod tests {
            true,
            strategy,
            true,
+            vec![9000],
+            false,
        );
        block_on(scanner.run());
        // if the scan fails, it wouldn't be able to assert_eq! as it panicked!
@@ -219,6 +336,8 @@ mod tests {
            true,
            strategy,
            true,
+            vec![9000],
+            false,
        );
        block_on(scanner.run());
        // if the scan fails, it wouldn't be able to assert_eq! as it panicked!
@@ -240,6 +359,8 @@ mod tests {
            true,
            strategy,
            true,
+            vec![9000],
+            false,
        );
        block_on(scanner.run());
        assert_eq!(1, 1);
@@ -260,6 +381,8 @@ mod tests {
            true,
            strategy,
            true,
+            vec![9000],
+            false,
        );
        block_on(scanner.run());
        assert_eq!(1, 1);
@@ -283,6 +406,101 @@ mod tests {
            true,
            strategy,
            true,
+            vec![9000],
+            false,
+        );
+        block_on(scanner.run());
+        assert_eq!(1, 1);
+    }
+
+    #[test]
+    fn udp_scan_runs() {
+        // Makes sure the program still runs and doesn't panic
+        let addrs = vec!["127.0.0.1".parse::<IpAddr>().unwrap()];
+        let range = PortRange {
+            start: 1,
+            end: 1_000,
+        };
+        let strategy = PortStrategy::pick(&Some(range), None, ScanOrder::Random);
+        let scanner = Scanner::new(
+            &addrs,
+            10,
+            Duration::from_millis(100),
+            1,
+            true,
+            strategy,
+            true,
+            vec![9000],
+            true,
+        );
+        block_on(scanner.run());
+        // if the scan fails, it wouldn't be able to assert_eq! as it panicked!
+        assert_eq!(1, 1);
+    }
+    #[test]
+    fn udp_ipv6_runs() {
+        // Makes sure the program still runs and doesn't panic
+        let addrs = vec!["::1".parse::<IpAddr>().unwrap()];
+        let range = PortRange {
+            start: 1,
+            end: 1_000,
+        };
+        let strategy = PortStrategy::pick(&Some(range), None, ScanOrder::Random);
+        let scanner = Scanner::new(
+            &addrs,
+            10,
+            Duration::from_millis(100),
+            1,
+            true,
+            strategy,
+            true,
+            vec![9000],
+            true,
+        );
+        block_on(scanner.run());
+        // if the scan fails, it wouldn't be able to assert_eq! as it panicked!
+        assert_eq!(1, 1);
+    }
+    #[test]
+    fn udp_quad_zero_scanner_runs() {
+        let addrs = vec!["0.0.0.0".parse::<IpAddr>().unwrap()];
+        let range = PortRange {
+            start: 1,
+            end: 1_000,
+        };
+        let strategy = PortStrategy::pick(&Some(range), None, ScanOrder::Random);
+        let scanner = Scanner::new(
+            &addrs,
+            10,
+            Duration::from_millis(100),
+            1,
+            true,
+            strategy,
+            true,
+            vec![9000],
+            true,
+        );
+        block_on(scanner.run());
+        assert_eq!(1, 1);
+    }
+    #[test]
+    fn udp_google_dns_runs() {
+        let addrs = vec!["8.8.8.8".parse::<IpAddr>().unwrap()];
+        let range = PortRange {
+            start: 100,
+            end: 150,
+        };
+        let strategy = PortStrategy::pick(&Some(range), None, ScanOrder::Random);
+        let scanner = Scanner::new(
+            &addrs,
+            10,
+            Duration::from_millis(100),
+            1,
+            true,
+            strategy,
+            true,
+            vec![9000],
+            true,
        );
        block_on(scanner.run());
        assert_eq!(1, 1);
@@ -17,7 +17,7 @@ pub struct SocketIterator<'s> {
 /// An iterator that receives a slice of IPs and ports and returns a Socket
 /// for each IP and port pair until all of these combinations are exhausted.
 /// The goal of this iterator is to go over every IP and port combination
-/// wihout generating a big memory footprint. The alternative would be
+/// without generating a big memory footprint. The alternative would be
 /// generating a vector containing all these combinations.
 impl<'s> SocketIterator<'s> {
    pub fn new(ips: &'s [IpAddr], ports: &'s [u16]) -> Self {
@@ -29,6 +29,7 @@ impl<'s> SocketIterator<'s> {
    }
 }

+#[allow(clippy::doc_link_with_quotes)]
 impl<'s> Iterator for SocketIterator<'s> {
    type Item = SocketAddr;

@@ -43,10 +44,9 @@ impl<'s> Iterator for SocketIterator<'s> {
    /// it.next(); // 192.168.0.1:443
    /// it.next(); // None
    fn next(&mut self) -> Option<Self::Item> {
-        match self.product_it.next() {
-            None => None,
-            Some((port, ip)) => Some(SocketAddr::new(*ip, *port)),
-        }
+        self.product_it
+            .next()
+            .map(|(port, ip)| SocketAddr::new(*ip, *port))
    }
 }

@@ -1,52 +1,83 @@
-//! Scripting engine to run scripts based on tags.
+//! Scripting Engine to run scripts based on tags.
+//!
 //! This module serves to filter and run the scripts selected by the user.
 //!
 //! A new commandline and configuration file option was added.
 //!
-//! --scripts
+//! ## `--scripts`
 //!
-//!      default
-//!          This is the default behavior, like as it was from the beginning of RustScan.
-//!          The user do not have to chose anything for this. This is the only script embedded in RustScan running as default.
+//! ### `default`
 //!
-//!      none
-//!          The user have to use the --scripts none commandline argument or scripts = "none" in the config file.
-//!          None of the scripts will run, this replaces the removed --no-nmap option.
+//! This is the default behavior, like as it was from the beginning of RustScan.
 //!
-//!      custom
-//!          The user have to use the --scripts custom commandline argument or scripts = "custom" in the config file.
-//!          Rustscan will look for the script configuration file in the user's home dir: home_dir/.rustscan_scripts.toml
-//!          The config file have 3 optional fields, tag, developer and port. Just the tag field will be used forther in the process.
-//!          RustScan will also look for available scripts in the user's home dir: home_dir/.rustscan_scripts
-//!          and will try to read all the files, and parse them into a vector of ScriptFiles.
-//!          Filtering on tags means the tags found in the rustscan_scripts.toml file will also have to be present in the Scriptfile,
-//!          otherwise the script will not be selected.
-//!          All of the rustscan_script.toml tags have to be present at minimum in a Scriptfile to get selected, but can be also more.
+//! The user do not have to chose anything for this. This is the only script
+//! embedded in RustScan running as default.
+//!
+//! ### `none`
+//!
+//! The user have to use the `--scripts none` commandline argument or `scripts =
+//! "none"` in the config file.
+//!
+//! None of the scripts will run, this replaces the removed `--no-nmap` option.
+//!
+//! ### `custom`
+//!
+//! The user have to use the `--scripts custom` commandline argument or
+//! `scripts = "custom"` in the config file.
+//!
+//! RustScan will look for the script configuration file in the user's home
+//! dir: `home_dir/.rustscan_scripts.toml`
+//!
+//! The config file have 3 optional fields: `tag`, `developer` and `port`. Just
+//! the `tag` field will be used forther in the process.
+//!
+//! RustScan will also look for available scripts in the user's home dir:
+//! `home_dir/.rustscan_scripts` and will try to read all the files, and parse
+//! them into a vector of [`ScriptFile`].
+//!
+//! Filtering on tags means the tags found in the `rustscan_scripts.toml` file
+//! will also have to be present in the [`ScriptFile`], otherwise the script
+//! will not be selected.
+//!
+//! All of the `rustscan_script.toml` tags have to be present at minimum in a
+//! [`ScriptFile`] to get selected, but can be also more.
 //!
 //! Config file example:
-//! fixtures/test_rustscan_scripts.toml
+//!
+//! - `fixtures/test_rustscan_scripts.toml`
 //!
 //! Script file examples:
-//! fixtures/test_script.py
-//! fixtures/test_script.pl
-//! fixtures/test_script.sh
-//! fixtures/test_script.txt
 //!
-//! call_format in script files can be of 2 variants.
-//! One is where all of the possible tags {{script}} {{ip}} {{port}} are there.
-//!     The {{script}} part will be replaced with the scriptfile full path gathered while parsing available scripts.
-//!     The {{ip}} part will be replaced with the ip we got from the scan.
-//!     The {{port}} part will be reaplced with the ports separated with the ports_separator found in the script file
+//! - `fixtures/test_script.py`
+//! - `fixtures/test_script.pl`
+//! - `fixtures/test_script.sh`
+//! - `fixtures/test_script.txt`
 //!
-//! And when there is only {{ip}} and {{port}} is in the format, ony those will be replaced with the arguments from the scan.
-//! This makes it easy to run a system installed command like nmap, and give any kind of arguments to it.
+//! `call_format` in script files can be of 2 variants:
 //!
-//! If the format is different, the script will be silently discarded and will not run. With the Debug option it's possible to see where it goes wrong.
+//! One is where all of the possible tags `{{script}}`, `{{ip}}` and `{{port}}`
+//! are there.
+//!
+//! - The `{{script}}` part will be replaced with the scriptfile full path
+//!   gathered while parsing available scripts.
+//! - The `{{ip}}` part will be replaced with the ip we got from the scan.
+//! - The `{{port}}` part will be reaplced with the ports separated with the
+//!   `ports_separator` found in the script file
+//!
+//! And when there is only `{{ip}}` and `{{port}}` is in the format, only those
+//! will be replaced with the arguments from the scan.
+//!
+//! This makes it easy to run a system installed command like `nmap`, and give
+//! any kind of arguments to it.
+//!
+//! If the format is different, the script will be silently discarded and will
+//! not run. With the `Debug` option it's possible to see where it goes wrong.

 #![allow(clippy::module_name_repetitions)]

 use crate::input::ScriptsRequired;
 use anyhow::{anyhow, Result};
+use log::debug;
 use serde_derive::{Deserialize, Serialize};
 use std::collections::HashSet;
 use std::convert::TryInto;
@@ -72,14 +103,13 @@ pub fn init_scripts(scripts: ScriptsRequired) -> Result<Vec<ScriptFile>> {
        ScriptsRequired::None => Ok(scripts_to_run),
        ScriptsRequired::Default => {
            let default_script =
-                toml::from_str::<ScriptFile>(&DEFAULT).expect("Failed to parse Script file.");
+                toml::from_str::<ScriptFile>(DEFAULT).expect("Failed to parse Script file.");
            scripts_to_run.push(default_script);
            Ok(scripts_to_run)
        }
        ScriptsRequired::Custom => {
-            let scripts_dir_base = match dirs::home_dir() {
-                Some(dir) => dir,
-                None => return Err(anyhow!("Could not infer scripts path.")),
+            let Some(scripts_dir_base) = dirs::home_dir() else {
+                return Err(anyhow!("Could not infer scripts path."));
            };
            let script_paths = match find_scripts(scripts_dir_base) {
                Ok(script_paths) => script_paths,
@@ -105,7 +135,7 @@ pub fn init_scripts(scripts: ScriptsRequired) -> Result<Vec<ScriptFile>> {
                        let script_hashset: HashSet<String> =
                            script.tags.clone().unwrap().into_iter().collect();
                        if config_hashset.is_subset(&script_hashset) {
-                            scripts_to_run.push(script.to_owned());
+                            scripts_to_run.push(script.clone());
                        } else {
                            debug!(
                                "\nScript tags does not match config tags {:?} {}",
@@ -134,6 +164,7 @@ pub fn parse_scripts(scripts: Vec<PathBuf>) -> Vec<ScriptFile> {
 }

 #[derive(Clone, Debug)]
+#[allow(dead_code)]
 pub struct Script {
    // Path to the script itself.
    path: Option<PathBuf>,
@@ -233,16 +264,14 @@ impl Script {
        }
        debug!("\nScript format to run {}", to_run);

-        let arguments = shell_words::split(&to_run).expect("Failed to parse script arguments");
-
-        execute_script(arguments)
+        execute_script(&to_run)
    }
 }

 #[cfg(not(tarpaulin_include))]
-fn execute_script(mut arguments: Vec<String>) -> Result<String> {
-    debug!("\nScript arguments vec: {:?}", &arguments);
-    let process = Exec::cmd(&arguments.remove(0)).args(&arguments);
+fn execute_script(script: &str) -> Result<String> {
+    debug!("\nScript arguments {}", script);
+    let process = Exec::shell(script);
    match process.capture() {
        Ok(c) => {
            let es = match c.exit_status {
@@ -293,16 +322,14 @@ impl ScriptFile {
        let real_path = script.clone();
        let mut lines_buf = String::new();
        if let Ok(file) = File::open(script) {
-            for line in io::BufReader::new(file).lines().skip(1) {
-                if let Ok(mut line) = line {
-                    if line.starts_with('#') {
-                        line.retain(|c| c != '#');
-                        line = line.trim().to_string();
-                        line.push('\n');
-                        lines_buf.push_str(&line);
-                    } else {
-                        break;
-                    }
+            for mut line in io::BufReader::new(file).lines().skip(1).flatten() {
+                if line.starts_with('#') {
+                    line.retain(|c| c != '#');
+                    line = line.trim().to_string();
+                    line.push('\n');
+                    lines_buf.push_str(&line);
+                } else {
+                    break;
                }
            }
        } else {
@@ -336,9 +363,8 @@ pub struct ScriptConfig {
 #[cfg(not(tarpaulin_include))]
 impl ScriptConfig {
    pub fn read_config() -> Result<ScriptConfig> {
-        let mut home_dir = match dirs::home_dir() {
-            Some(dir) => dir,
-            None => return Err(anyhow!("Could not infer ScriptConfig path.")),
+        let Some(mut home_dir) = dirs::home_dir() else {
+            return Err(anyhow!("Could not infer ScriptConfig path."));
        };
        home_dir.push(".rustscan_scripts.toml");

@@ -435,6 +461,7 @@ mod tests {
    }

    #[test]
+    #[cfg(unix)]
    fn run_bash_script() {
        let script_f = ScriptFile::new("fixtures/.rustscan_scripts/test_script.sh".into()).unwrap();
        let script: Script = into_script(script_f);
@@ -456,6 +483,7 @@ mod tests {
    }

    #[test]
+    #[cfg(unix)]
    fn run_perl_script() {
        let script_f = ScriptFile::new("fixtures/.rustscan_scripts/test_script.pl".into()).unwrap();
        let script: Script = into_script(script_f);
@@ -1,21 +1,20 @@
+//! Utilities for terminal output during scanning.
+
 /// Terminal User Interface Module for RustScan
 /// Defines macros to use
-
 #[macro_export]
 macro_rules! warning {
    ($name:expr) => {
-        use ansi_term::Colour::Red;
-        println!("{} {}", Red.bold().paint("[!]"), $name);
+        println!("{} {}", ansi_term::Colour::Red.bold().paint("[!]"), $name);
    };
    ($name:expr, $greppable:expr, $accessible:expr) => {
-        use ansi_term::Colour::Red;
        // if not greppable then print, otherwise no else statement so do not print.
        if !$greppable {
            if $accessible {
                // Don't print the ascii art
                println!("{}", $name);
            } else {
-                println!("{} {}", Red.bold().paint("[!]"), $name);
+                println!("{} {}", ansi_term::Colour::Red.bold().paint("[!]"), $name);
            }
        }
    };
@@ -24,18 +23,16 @@ macro_rules! warning {
 #[macro_export]
 macro_rules! detail {
    ($name:expr) => {
-        use ansi_term::Colour::Blue;
-        println!("{} {}", Blue.bold().paint("[~]"), $name);
+        println!("{} {}", ansi_term::Colour::Blue.bold().paint("[~]"), $name);
    };
    ($name:expr, $greppable:expr, $accessible:expr) => {
-        use ansi_term::Colour::Blue;
        // if not greppable then print, otherwise no else statement so do not print.
        if !$greppable {
            if $accessible {
                // Don't print the ascii art
                println!("{}", $name);
            } else {
-                println!("{} {}", Blue.bold().paint("[~]"), $name);
+                println!("{} {}", ansi_term::Colour::Blue.bold().paint("[~]"), $name);
            }
        }
    };
@@ -44,18 +41,24 @@ macro_rules! detail {
 #[macro_export]
 macro_rules! output {
    ($name:expr) => {
-        use ansi_term::Colour::RGB;
-        println!("{} {}", RGB(0, 255, 9).bold().paint("[>]"), $name);
+        println!(
+            "{} {}",
+            RGansi_term::Colour::RGB(0, 255, 9).bold().paint("[>]"),
+            $name
+        );
    };
    ($name:expr, $greppable:expr, $accessible:expr) => {
-        use ansi_term::Colour::RGB;
        // if not greppable then print, otherwise no else statement so do not print.
        if !$greppable {
            if $accessible {
                // Don't print the ascii art
                println!("{}", $name);
            } else {
-                println!("{} {}", RGB(0, 255, 9).bold().paint("[>]"), $name);
+                println!(
+                    "{} {}",
+                    ansi_term::Colour::RGB(0, 255, 9).bold().paint("[>]"),
+                    $name
+                );
            }
        }
    };
@@ -73,10 +76,30 @@ macro_rules! funny_opening {
            "Please contribute more quotes to our GitHub https://github.com/rustscan/rustscan",
            "😵 https://admin.tryhackme.com",
            "0day was here ♥",
+            "I don't always scan ports, but when I do, I prefer RustScan.",
+            "RustScan: Where scanning meets swagging. 😎",
+            "To scan or not to scan? That is the question.",
+            "RustScan: Because guessing isn't hacking.",
+            "Scanning ports like it's my full-time job. Wait, it is.",
+            "Open ports, closed hearts.",
+            "I scanned my computer so many times, it thinks we're dating.",
+            "Port scanning: Making networking exciting since... whenever.",
+            "You miss 100% of the ports you don't scan. - RustScan",
+            "Breaking and entering... into the world of open ports.",
+            "TCP handshake? More like a friendly high-five!",
+            "Scanning ports: The virtual equivalent of knocking on doors.",
+            "RustScan: Making sure 'closed' isn't just a state of mind.",
+            "RustScan: allowing you to send UDP packets into the void 1200x faster than NMAP",
+            "Port scanning: Because every port has a story to tell.",
+            "I scanned ports so fast, even my computer was surprised.",
+            "Scanning ports faster than you can say 'SYN ACK'",
+            "RustScan: Where '404 Not Found' meets '200 OK'.",
+            "RustScan: Exploring the digital landscape, one IP at a time.",
+            "TreadStone was here 🚀",
+            "With RustScan, I scan ports so fast, even my firewall gets whiplash 💨",
        ];
        let random_quote = quotes.choose(&mut rand::thread_rng()).unwrap();

        println!("{}\n", random_quote);
-        // println!("{} {}", RGB(0, 255, 9).bold().paint("[>]"), $name);
    };
 }
@@ -0,0 +1,279 @@
+pub mod udp_payload {
+    // const MAX_PAYLOAD_IPV4: usize = 65507; // 65,535 - 20 (IP header) - 8 (UDP header)
+    // const MAX_PAYLOAD_IPV6: usize = 65527; // 65,535 - 40 (IPv6 header) - 8 (UDP header)
+
+    /// From [RFC 768](https://www.rfc-editor.org/rfc/rfc768.txt)
+    /// We send blank UDP packets, unless the port is determined to be special.
+    ///
+    /// ```text
+    /// HEADER Handled by the OS
+    /// 0                   1                   2                   3
+    /// 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+    /// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+    /// |          Source Port          |       Destination Port        |
+    /// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+    /// |            Length             |           Checksum            |
+    /// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+    /// We append the data, based on the port the the header
+    /// DATA
+    /// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+    /// |                    Data (based on port)                       |
+    /// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+    /// ```
+    ///
+    /// # Fields
+    ///
+    /// - **Source Port**: The source port number.
+    /// - **Destination Port**: The destination port number.
+    /// - **Length**: The length of the UDP header and data.
+    /// - **Checksum**: The checksum for error-checking.
+    /// - **Data**: The payload data, which can vary based on the port.
+    #[allow(clippy::match_single_binding)]
+    pub fn cust_payload(dst_prt: u16) -> Vec<u8> {
+        match dst_prt {
+            // 53 => craft_dns_query_packet(),
+            // 67 => craft_dhcpc_packet(),
+            // 123 => craft_ntp_packet(),
+            // 161 => craft_snmp_packet(),
+            _ => vec![],
+        }
+    }
+
+    pub fn craft_snmptrap_packet() -> Vec<u16> {
+        let version = vec![0x30, 0x82]; // SNMP version
+        let community_string = vec![0x04, 0x06, 0x70, 0x75, 0x62, 0x6c, 0x69, 0x63]; // Community string "public"
+        let pdu_type = vec![0xa4, 0x82]; // PDU type for SNMP Trap
+        let enterprise_oid = vec![0x06, 0x09, 0x2b, 0x06, 0x01, 0x02, 0x01, 0x01, 0x01, 0x00]; // Enterprise OID
+
+        // Combine the components into a single SNMP Trap packet
+        [version, community_string, pdu_type, enterprise_oid].concat()
+    }
+
+    /// From [RFC 1592](https://www.rfc-editor.org/rfc/rfc1592.txt)
+    /// Crafts an SNMP packet based on the structure from RFC 1592.
+    ///
+    /// RFC 1592 defines the structure of an SNMP packet as follows
+    /// - **ASN.1 header**: 0x30
+    /// - **PDU length**: 37 + length of community name
+    /// - **SNMP version**: 0x02 0x01 0x00 (integer, length=1, value=0)
+    /// - **Community name**: A string of varying length
+    /// - **SNMP GET request**: 0xa0 0x1c (request type=0xa0, length=0x1c)
+    /// - **SNMP request ID**: 0x02 0x01 0x01 (integer, length=1, ID=1)
+    /// - **SNMP error status**: 0x02 0x01 0x00 (integer, length=1, error=0)
+    /// - **SNMP index**: 0x02 0x01 0x00 (integer, length=1, index=0)
+    /// - **VarBind list**: 0x30 0x11 (length=0x11)
+    /// - **VarBind**: 0x30 0x0f (length=0x0f)
+    /// - **Object ID**: 0x06 0x0b (length=0x0b)
+    /// - **Object instance**: 1.3.6.1.4.1.2.2.1.1.1.0
+    /// - **Null value**: 0x05 0x00 (length=0)
+    ///
+    /// The PDU length formula:
+    /// ```text
+    /// PDU_length = length of version field and string tag (4 bytes)
+    ///            + length of community length field (1 byte)
+    ///            + length of community name (depends...)
+    ///            + length of SNMP GET request (32 bytes)
+    /// ```
+    ///
+    /// # Returns
+    ///
+    /// A `Vec<u8>` representing the crafted SNMP packet.
+    pub fn craft_snmp_packet() -> Vec<u8> {
+        // TODO all versions of snmp
+        let v1 = vec![0x30, 0x29, 0x02, 0x01, 0x00];
+
+        let community_string = vec![0x04, 0x06, 0x70, 0x75, 0x62, 0x6c, 0x69, 0x63];
+        let pdu_type = vec![0xa0, 0x1c];
+
+        let request_id = vec![0x02, 0x04, 0x7a, 0x69, 0x67, 0x71];
+        let error_status = vec![0x02, 0x01, 0x00];
+        let error_index = vec![0x02, 0x01, 0x00];
+        let variable_bindings = vec![
+            0x30, 0x0e, 0x30, 0x0c, 0x06, 0x08, 0x2b, 0x06, 0x01, 0x02, 0x01, 0x01, 0x01, 0x00,
+            0x05, 0x00,
+        ];
+
+        let _basic_snmp = [
+            0x30, 0x26, 0x02, 0x01, 0x01, 0x04, 0x06, 0x70, 0x75, 0x62, 0x6c, 0x69, 0x63, 0xa0,
+            0x19, 0x02, 0x04, 0x71, 0x64, 0xfe, 0xf1, 0x02, 0x01, 0x00, 0x02, 0x01, 0x00, 0x30,
+            0x0b, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x06, 0x01, 0x02, 0x01, 0x05, 0x00,
+        ];
+
+        [
+            v1,
+            community_string,
+            pdu_type,
+            request_id,
+            error_status,
+            error_index,
+            variable_bindings,
+        ]
+        .concat()
+    }
+
+    /// Constructs a DHCP packet based on the RFC 1541 Dynamic Host Configuration Protocol specification.
+    ///
+    ///
+    /// # Returns
+    ///
+    /// A `Vec<u8>` representing the DHCP packet.
+    ///
+    /// This function crafts a DHCP Discover packet with the following fields:
+    /// - **op**: BOOTREQUEST (1)
+    /// - **htype**: Ethernet (1)
+    /// - **hlen**: 6
+    /// - **hops**: 0
+    /// - **xid**: Random transaction ID
+    /// - **secs**: 0
+    /// - **flags**: 0x8000 (Broadcast)
+    /// - **ciaddr**: 0.0.0.0
+    /// - **yiaddr**: 0.0.0.0
+    /// - **siaddr**: 0.0.0.0
+    /// - **giaddr**: 0.0.0.0
+    /// - **chaddr**: 00:00:00:00:00:00 (Client MAC address)
+    /// - **sname**: Not given
+    /// - **file**: Not given
+    /// - **options**: DHCP options
+    pub fn craft_dhcpc_packet() -> Vec<u8> {
+        let mut packet = Vec::with_capacity(240);
+
+        // BOOTP message type: Boot Request (1)
+        packet.push(0x01);
+
+        // Hardware type: Ethernet (10Mb) (1)
+        packet.push(0x01);
+
+        // Hardware address length: 6
+        packet.push(0x06);
+
+        // Hops: 0
+        packet.push(0x00);
+
+        // Transaction ID: random (0x3903F326)
+        packet.extend(&[0x39, 0x03, 0xF3, 0x26]);
+
+        // Seconds elapsed: 0
+        packet.extend(&[0x00, 0x00]);
+
+        // Bootp flags: 0x8000 (Broadcast) (0x8000)
+        packet.extend(&[0x80, 0x00]);
+
+        // Client IP address: 0.0.0.0
+        packet.extend(&[0x00, 0x00, 0x00, 0x00]);
+
+        // Your (client) IP address: 0.0.0.0
+        packet.extend(&[0x00, 0x00, 0x00, 0x00]);
+
+        // Next server IP address: 0.0.0.0
+        packet.extend(&[0x00, 0x00, 0x00, 0x00]);
+
+        // Relay agent IP address: 0.0.0.0
+        packet.extend(&[0x00, 0x00, 0x00, 0x00]);
+
+        // Client MAC address: 00:00:00:00:00:00
+        packet.extend(&[0x00, 0x00, 0x00, 0x00, 0x00, 0x00]);
+
+        // Client hardware address padding: 00000000000000000000
+        packet.extend(&[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]);
+
+        // Server host name not given
+        packet.extend(&[0x00; 64]);
+
+        // Boot file name not given
+        packet.extend(&[0x00; 128]);
+
+        // Magic cookie: DHCP
+        packet.extend(&[0x63, 0x82, 0x53, 0x63]);
+
+        // DHCP Message Type: DHCP Discover (1)
+        packet.extend(&[0x35, 0x01, 0x01]);
+
+        // DHCP Option: Parameter Request List
+        packet.extend(&[0x37, 0x04, 0x01, 0x03, 0x06, 0x2a]);
+
+        // End Option
+        packet.push(0xff);
+
+        packet
+    }
+
+    /// Constructs a DNS query packet.
+    ///
+    /// The structure of the DNS packet is as follows:
+    ///
+    /// ```text
+    /// +---------------------+
+    /// |        Header       |
+    /// +---------------------+
+    /// |       Question      | the question for the name server
+    /// +---------------------+
+    /// |        Answer       | RRs answering the question
+    /// +---------------------+
+    /// |      Authority      | RRs pointing toward an authority
+    /// +---------------------+
+    /// |      Additional     | RRs holding additional information
+    /// +---------------------+
+    /// ```
+    ///
+    /// The function builds a DNS query packet with the following fields:
+    /// - **Header**: Contains the transaction ID and flags.
+    /// - **Question**: Specifies the query (e.g., the domain name to look up).
+    /// - **Answer**: Resource records that answer the question (empty for a query).
+    /// - **Authority**: Resource records that point toward an authority (empty for a query).
+    /// - **Additional**: Resource records holding additional information (empty for a query).
+    ///
+    /// # Returns
+    ///
+    /// A `Vec<u8>` representing the DNS query packet.
+    pub fn craft_dns_query_packet() -> Vec<u8> {
+        let mut packet = Vec::new();
+
+        // Transaction ID: Random
+        packet.extend(&[0x12, 0x34]);
+
+        // Flags: Standard query
+        packet.extend(&[0x01, 0x00]);
+        // Header ^
+
+        // Questions: 1
+        packet.extend(&[0x00, 0x01]);
+
+        // Answer RRs: 0
+        packet.extend(&[0x00, 0x00]);
+
+        // Authority RRs: 0
+        packet.extend(&[0x00, 0x00]);
+
+        // Additional RRs: 0
+        packet.extend(&[0x00, 0x00]);
+
+        // Query: www.google.com
+        let query_name = "www.google.com";
+        for part in query_name.split('.') {
+            packet.push(part.len() as u8);
+            packet.extend(part.as_bytes());
+        }
+        packet.push(0); // End of query name
+
+        // Query Type: A (host address)
+        packet.extend(&[0x00, 0x01]);
+
+        // Query Class: IN (internet)
+        packet.extend(&[0x00, 0x01]);
+
+        packet
+    }
+
+    /// Creates the simplest NTP packet possible
+    /// 0x1b followed by 47 0s, (Version = 3, Mode = 3)
+    pub fn craft_ntp_packet() -> Vec<u8> {
+        let mut packet = vec![0u8; 48];
+        packet[0] = 0x1b;
+        packet
+    }
+
+    // TODO add more packets for the top 1000 ports
+    // `sort -r -k3 /usr/share/nmap/nmap-services | grep udp | head -n 1000`
+    // There has to be a better way to structure this, maybe internal crate for packet payload
+    // creation
+}
@@ -35,7 +35,7 @@ fn run_rustscan_with_timeout(args: &[&str], timeout: Duration) {
                if tries == 0 {
                    // child hasn't exited yet
                    child.kill().unwrap();
-                    child.wait().unwrap().code();
+                    child.wait().unwrap().code().unwrap();
                    panic!("Timeout while running command");
                }
            }
@@ -106,4 +106,58 @@ mod timelimits {
            super::Duration::from_secs(26),
        );
    }
+    #[test]
+    #[ignore]
+    fn udp_scan_localhost() {
+        let timeout = super::Duration::from_secs(25);
+        super::run_rustscan_with_timeout(&["--greppable", "127.0.0.1", "--udp"], timeout);
+    }
+    #[test]
+    #[ignore]
+    fn udp_scan_google_com() {
+        super::run_rustscan_with_timeout(
+            &[
+                "--udp",
+                "--greppable",
+                "-u",
+                "5000",
+                "-b",
+                "2500",
+                "google.com",
+            ],
+            super::Duration::from_secs(28),
+        );
+    }
+    #[test]
+    #[ignore]
+    fn udp_scan_example_com() {
+        super::run_rustscan_with_timeout(
+            &[
+                "--udp",
+                "--greppable",
+                "-u",
+                "5000",
+                "-b",
+                "2500",
+                "example.com",
+            ],
+            super::Duration::from_secs(28),
+        );
+    }
+    #[test]
+    #[ignore]
+    fn udp_scan_rustscan_cmnatic_co_uk() {
+        super::run_rustscan_with_timeout(
+            &[
+                "--udp",
+                "--greppable",
+                "-u",
+                "5000",
+                "-b",
+                "2500",
+                "rustscan.cmnatic.co.uk",
+            ],
+            super::Duration::from_secs(26),
+        );
+    }
 }
				`@@ -0,0 +1 @@`
				`cargo publish && cargo build --release && git add Cargo.lock && git commit -m 'Updating lock file' && gpsup`