Mozeidon

Mozeidon is essentially a CLI written in Go to handle Mozilla Firefox tabs and bookmarks.

Here you'll find :

• a guide to complete the installation of the mozeidon components (see architecture).
  • install the Mozeidon firefox add-on
  • install the Mozeidon native-app
  • install the Mozeidon CLI
• advanced examples of the CLI usage (including integration with fzf and fzf-tmux)
• a Raycast extension built around Mozeidon (for MacOS only)

All the code is available here as open-source. You can be sure that :

• your browsing data (tabs, bookmarks, etc) will remain private and safe: mozeidon will never share anything outside of your system.
• at any time, stopping or removing the mozeidon firefox addon extension will stop or remove all related processes on your machine.

Using the mozeidon CLI, you can :

• list all currently opened tabs
• list recently-closed tabs
• list current bookmarks
• switch to a currently opened tab
• open a new tab (empty tab or with target url)
• close a currently opened tab

Architecture

Mozeidon is built on ipc and native-messaging protocols, using the following components :

• the Mozeidon firefox add-on, a JS script running in the Mozilla browser, receives commands and sends back data (i.e tabs, bookmarks, etc) by leveraging various browser APIs.

• the Mozeidon native-app, a Go program, interacts with the Mozeidon firefox-addon. It sends commands to, and receive data from the browser addon - via native-messaging protocol.

• the Mozeidon CLI, another Go program, interacts with the Mozeidon native-app. It sends commands to and receive data from the native-app - via ipc protocol.

Of course you need to install each of these components :

• the Mozeidon firefox add-on
• the Mozeidon native-app
• the Mozeidon CLI

Mozeidon firefox-addon

The mozeidon addon for Mozilla Firefox can be found here :

https://addons.mozilla.org/en-US/firefox/addon/mozeidon

Mozeidon native-app

The mozeidon native-app, a very simple ipc server written in go, will allow the mozeidon add-on to receive commands from and send responses to the mozeidon CLI (see below).

On MacOS or Linux, you can install it using homebrew :

brew tap egovelox/homebrew-mozeidon ;

brew install egovelox/mozeidon/mozeidon-native-app ;

Otherwise, you may download the binary from the release page.

If no release matches your platform, you can build the binary yourself:

git clone https://github.com/egovelox/mozeidon-native-app.git ;

cd mozeidon-native-app && go build

As a firefox native-app, it has to be referenced into your Firefox configuration.

Referencing the native-app into your Firefox configuration

On MacOS, first locate the ~/Library/Application Support/Mozilla/NativeMessagingHosts directory (or create it if missing).

Then create a mozeidon.json file, and copy into it the following json.

Note: depending on your installation, you may need to replace the value in "path" with the absolute path of the mozeidon-native-app.

{
  "name": "mozeidon",
  "description": "Native messaging add-on to interact with your browser",
  "path": "/opt/homebrew/bin/mozeidon-native-app",
  "type": "stdio",
  "allowed_extensions": [
    "mozeidon-addon@egovelox.com"
  ]
}

Now the Mozeidon firefox-addon will be able to interact with the Mozeidon native-app.

Note : For other OS than MacOS, please check the Mozilla documentation to find the correct location of the Firefox NativeMessagingHosts directory.

As a last step, you need to install the Mozeidon CLI.

Mozeidon CLI

The Mozeidon CLI is a lightweight CLI written in go.

On MacOS or Linux, you can install it using homebrew :

brew tap egovelox/homebrew-mozeidon ;

brew install egovelox/mozeidon/mozeidon ;

Otherwise, you may download the binary from the release page.

If no release matches your platform, you can build the binary yourself:

git clone https://github.com/egovelox/mozeidon.git ;

cd mozeidon/cli && go build

Examples

How to use the Mozeidon CLI with go-template syntax for customized output :

mozeidon tabs get --go-template '{{range .Items}}{{.WindowId}}:{{.Id}} {{.Url}} {{if .Pinned}}📌{{else}}🦊{{end}} {{"\\u001b[38;5;109m"}} {{.Domain}}{{"\\033[0m"}} {{.Title}}{{"\n"}}{{end}}'

Customized tabs output with a pipe into fzf

If you've installed fzf you can use it as a kind of UI for mozeidon CLI.

The below bash command shows how fzf can be used to select a tab, and to open it in your browser.

mozeidon tabs get --go-template '{{range .Items}}{{.WindowId}}:{{.Id}} {{.Url}} {{if .Pinned}}📌{{else}}🦊{{end}} {{"\u001b[38;5;109m"}} {{.Domain}}{{"\033[0m"}} {{.Title}}{{"\n"}}{{end}}' \
| fzf --ansi --with-nth 3.. --bind=enter:accept-non-empty \
| cut -d ' ' -f1 \
| xargs -n1 -I % sh -c 'mozeidon tabs switch % && open -a firefox'

note : xargs -n1 prevents to run any command if no tab was chosen with fzf ( say, for example, that you exited fzf with ctrl-c )

note : mozeidon tabs switch is used to switch to the tab you chose in fzf

Same as previous, but tailored for tmux

As an example, let's bind our mozeidon script with the tmux shortcut Prefix-t

# in $HOME/.tmux.conf
bind t run-shell -b "bash $HOME/.tmux/mozeidon_tabs.sh"

Now create the script $HOME/.tmux/mozeidon_tabs.sh :

#!/bin/bash
mozeidon tabs get --go-template \
'{{range .Items}}{{.WindowId}}:{{.Id}} {{.Url}} {{if .Pinned}}📌{{else}}🦊{{end}} {{"\u001b[38;5;109m"}} {{.Domain}}{{"\033[0m"}}  {{.Title}}{{"\n"}}{{end}}' \
| fzf-tmux -p 60% -- \
--no-bold --layout=reverse --margin 0% --no-separator --no-info --black --color bg+:black,hl:reverse,hl+:reverse,gutter:black --ansi --with-nth 3.. --bind=enter:accept-non-empty \
| cut -d ' ' -f1 \
| xargs -n1 -I % sh -c '$HOME/bin/mozeidon tabs switch % && open -a firefox'

Another advanced fzf-tmux script

This more advanced script will allow to :

• open a new tab (empty or with search query)
• switch to a currently open tab
• close one or many tabs

#!/bin/bash
$HOME/bin/mozeidon tabs get --go-template \
  '{{range .Items}}{{.WindowId}}:{{.Id}} {{.Url}} {{if .Pinned}}📌{{else}}🦊{{end}} {{"\u001b[38;5;109m"}}  {{.Domain}}{{"\033[0m"}}  {{.Title}}{{"\n"}}{{end}}'\
  | fzf-tmux -p 60% -- \
  --border-label=TABS \
  --no-bold \
  --layout=reverse \
  --margin 0% \
  --no-separator \
  --no-info \
  --black \
  --color bg+:black,hl:reverse,hl+:reverse,gutter:black \
  --with-nth 3.. \
  --bind="enter:accept+execute($HOME/bin/mozeidon tabs switch {1} && open -a firefox)" \
  --multi \
  --marker=❌ \
  --bind="ctrl-p:accept-non-empty+execute($HOME/bin/mozeidon tabs close {+1})" \
  --bind="ctrl-o:print-query" \
  --header-first \
  --color=header:#5e6b6b \
  '--header=close tab(s) [C-p] 
open new tab [C-o]'\
  | grep -v "[🦊📌]" \
  | xargs -r -I {} sh -c '$HOME/bin/mozeidon tabs new "{}" && open -a firefox'

Raycast extension

For MacOS users only : see the Mozeidon Raycast extension.

Note that you'll first need to complete the installation of Mozeidon components (Mozeidon firefox add-on, Mozeidon native-app and Mozeidon CLI).

Releases

Various releases of the Mozeidon CLI can be found on the releases page.

Releases are managed with github-actions and goreleaser.

A release will be auto-published when a new git tag is pushed, e.g :

git clone https://github.com/egovelox/mozeidon.git && cd mozeidon;

git tag -a v2.0.0 -m "A new mozeidon (CLI) release"

git push origin v2.0.0