# feuille **feuille** is a fast, dead-simple socket-based pastebin that allows a user to send text, logs or code to your server. It focuses on speed, code quality, and security.
Table of Contents
  1. Usage
  2. Description
  3. Installation
  4. Help
  5. Authors
  6. License
  7. Acknowledgments
## Usage You'll need either `nc` or nmap's `ncat`. The former is probably already available on your system, but lacks some features, which will make you wait for the timeout before getting a link to the paste (usually 2 seconds). The latter will have to be installed manually but is more featureful and will get a link instantly once everything is sent. It works the exact same way as `nc`. *Choose your weapon wisely.* Assuming you're using my personal pastebin instance, [heimdall.pm](https://bin.heimdall.pm/), you can upload text, code or logs like this: ```console // sending text $ echo Hello, World! | nc heimdall.pm 9999 https://bin.heimdall.pm/abcd // sending files $ cat feuille.c | nc heimdall.pm 9999 https://bin.heimdall.pm/efgh ``` *This truly is the joy of Unix pipes.* Once you received the link to your paste, you can send it to someone, browse it or `curl` it, like this: ```console $ curl https://bin.heimdall.pm/abcd Hello, World! $ curl https://bin.heimdall.pm/efgh /* * feuille.c * Main source file. ... ``` If you want syntax highlighting on your pastes, you can use `bat`, a cat clone with syntax highlighting features. Simply `curl` your paste and pipe it to `bat` with the language used. ```console $ curl https://bin.heimdall.pm/efgh | bat -l c /* * feuille.c * Main source file. ... ``` Want to push the concept further? You can send encrypted files, too! You'll need `gpg` for this. `-c` means encryption using a password, `-ao tmp.pgp` means ASCII output to file `tmp.pgp`. ```console $ cat secret.txt | gpg -cao tmp.pgp $ cat tmp.pgp | nc heimdall.pm 9999 https://bin.heimdall.pm/ijkl ``` You can then retrieve it and decrypt it using `curl` and `gpg` again, like this: ```console $ curl https://bin.heimdall.pm/ijkl | gpg -d ``` (Obviously, you'll have to type the right password.) But, all those commands are really cumbersome, aren't they? Guess what? We made aliases! Put those into your `~/.{ba,z,k}shrc`: ```sh alias pst="nc heimdall.pm 9999" alias spst="gpg -cao /tmp/paste.pgp && cat /tmp/paste.pgp | nc heimdall.pm 9999 && rm /tmp/paste.pgp" ``` Now, you can use **feuille** like this: ```console // plain $ echo Hello, World! | pst https://bin.heimdall.pm/mnop // encrypted $ echo da sup3r sekr1t | spst https://bin.heimdall.pm/qrst ``` That sould be it. Have fun! ## Description * Focuses on speed, * Handles multiple requests at once (using a pool of `fork`'ed workers) * Only does what it needs to do * code quality, * Readable, documented code * With future contributors / maintainers in mind * and security * `chroot`s in the output folder * Drops root privileges once they're no longer needed * Uses OS-specific security measures (like OpenBSD's `pledge`) * Plenty of auxiliary files (see [cgi/](https://basedwa.re/tmtt/feuille/src/branch/main/cgi), [cron/](https://basedwa.re/tmtt/feuille/src/branch/main/cron) and [service/](https://basedwa.re/tmtt/feuille/src/branch/main/service)) * A CGI script that lets the user send pastes directly from your website * A sample HTML form for your CGI script * A cron job that deletes expired pastes * A SystemD service file * An OpenRC service file * Lots of options (see [configuration](#configuration)) * Works on nearly all POSIX-compliant OSes * Can be run in the background and as a service * IPv6-enabled * Now with 100% more [Cosmopolitan libc](http://justine.lol/cosmopolitan/) support! ## Installation ### Dependencies You'll need a working *POSIX-compliant system* such as Linux, OpenBSD or FreeBSD, a C99 compiler (GCC, Clang...) and a POSIX-Make implementation. You'll probably want an HTTP / Gopher / Gemini / ... server to serve the pastes on the web, such as OpenBSD's httpd or Apache. Just make your server serve the folder feuille's using, there are plenty of tutorials on the web. If you wish to make modifications to the manpage, you'll need pandoc to convert the markdown file into a man-compatible format. ### Build **feuille** needs to be built from source. To do so, you'll first need to clone the repository. ```console $ git clone https://basedwa.re/tmtt/feuille $ cd feuille ``` Then, simply run: ```console $ make $ sudo make install ``` You can also build using the [Cosmopolitan libc](http://justine.lol/cosmopolitan/), which will make an executable capable of running on Linux, OpenBSD, FreeBSD, Mac... out of the box. To do so, build with the `COSMO` flag. It will produce `feuille.com.dbg` and `feuille.com`, the former being the debug binary, and the latter the portable one. If you wish to make a debug build, you can set `DEBUG` to whatever comes to your mind. You can also set `CC` to the compiler of your liking, like `clang` or `pcc`. ```console $ make COSMO=y DEBUG=y CC=clang ``` In order to compile CGI script(s), run: ```console $ make cgi ``` `ADDR` and `PORT` can be set to the address and port on which **feuille** listens, respectively. ### Configuration For a complete list of options and examples, please see the manpage, either on your computer by doing `man feuille` or on the [online wiki](https://basedwa.re/tmtt/feuille/wiki/Manpage). ## Help * [How do I make feuille run at startup?](#how-do-i-make-feuille-run-at-startup) * [How do I remove expired pastes after some time?](#how-do-i-remove-expired-pastes-after-some-time) * [How can I send pastes directly from my website (instead of using netcat)?](#how-can-i-send-pastes-directly-from-my-website-instead-of-using-netcat) ### How do I make feuille run at startup? We made some service files for that. #### SystemD Tweak [service/systemd](https://basedwa.re/tmtt/feuille/src/branch/main/service/systemd) to your liking and copy it to `/etc/systemd/system/feuille.service`. Then, do (as root): ```console # systemctl daemon-reload # systemctl enable feuille # systemctl start feuille ``` #### OpenRC Copy [service/openrc](https://basedwa.re/tmtt/feuille/src/branch/main/service/openrc) into `/etc/rc.d/feuille`. Then, do (as root): ```console # rcctl enable feuille # rcctl set feuille flags -U https://my.paste.bin # rcctl start feuille ``` Tweak the flags to your liking. ### How do I remove expired pastes after some time? You can put that in your crontab (by doing `sudo crontab -e`). It will delete all files in `/var/www/feuille` that are at least 7 days old. Don't forget to change the folder to the one **feuille**'s using and eventually `+7` to the maximum file age you'd like to use. ``` 0 0 * * * find /var/www/feuille -type f -mtime +7 -exec rm {} + ``` See [cron/purge.cron](https://basedwa.re/tmtt/feuille/src/branch/main/cron/purge.cron) if you'd like to download the cron job. ### How can I send pastes directly from my website (instead of using netcat)? We made a CGI script for that. First, you need to build it: ```console $ make cgi ``` `ADDR` and `PORT` can be set to the address and port on which **feuille** listens, respectively. Once it's done, you can put `./cgi/feuille.cgi` in your website's `cgi-bin` folder (usually somewhere like `/var/www/my.paste.bin/cgi-bin`) and configure your web server to execute CGI scripts. You can then create an HTML form that will send a POST request to the CGI script. The form must have `enctype="text/plain"` and must contain only one input or textarea. See [cgi/form.html](https://basedwa.re/tmtt/feuille/src/branch/main/cgi/form.html) for a sample form. ## Authors Tom MTT. ## License Copyright © 2022 Tom MTT. This program is free software, licensed under the 3-Clause BSD License. See LICENSE for more information. ## Acknowledgments Heavily inspired by [fiche](https://github.com/solusipse/fiche). I entirely "rewrote" fiche from scratch because I wasn't happy with some of its features and its overall code quality.