https://github.com/vikingfacer/cappy

cappy the crappy network capture
https://github.com/vikingfacer/cappy

network packet-capture packet-sniffer pcap zig

Last synced: 13 days ago
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cappy the crappy network capture

• Host: GitHub
• URL: https://github.com/vikingfacer/cappy
• Owner: vikingfacer
• License: mit
• Created: 2025-03-26T02:40:54.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2026-01-01T05:44:26.000Z (6 months ago)
• Last Synced: 2026-01-06T00:13:50.776Z (6 months ago)
• Topics: network, packet-capture, packet-sniffer, pcap, zig
• Language: Zig
• Homepage:
• Size: 198 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md
  • License: LICENSE

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README

          

# Cappy _the crappy network capture_

![ci](https://github.com/vikingfacer/cappy/actions/workflows/ci.yml/badge.svg)

![CappyImage](img/cappy1.jpg)

Cappy is 🚧 (WORK IN PROGRESS)

Cappy is a network capture project. The goal is to create something that can

(crappily) filter / capture network traffic and also allow the user to load pcap programs

The cappy arguments

* list of devices is display (or not)

    * -l _or_ --list: list devices

* device or file is opened

    * -d _or_ --device: open device

    * -i _or_ --input: open file

    * _These are mutual exclusive_

    * but if neither are given the "any" device is used

* program dispatched or output packet capture

    * -p _or_ --program: dispatch program on open capture (or display packets)

        * _This takes a special format argument_ library:function

* Output capture to file

    * -o _or_ --output: file capture is saved to

* filter capture traffic

    * positional arguments using the tcpdump filter spec

```

cappy -l

      -[d|i] [device|lookatthiscap.pcap]

      -p libCap.so:TheCappestFunction

      -o whatthecap.pcap

      proto == tcp`

```