Overhaul of external binaries / support package info

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Bryan Ashby 2020-11-22 13:29:08 -07:00
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- [HJSON Config Files]({{ site.baseurl }}{% link configuration/hjson.md %})
- [Menus]({{ site.baseurl }}{% link configuration/menu-hjson.md %})
- [Directory Structure]({{ site.baseurl }}{% link configuration/directory-structure.md %})
- [External Binaries]({{ site.baseurl }}{% link configuration/external-binaries.md %})
- [Archivers]({{ site.baseurl }}{% link configuration/archivers.md %})
- [File Transfer Protocols]({{ site.baseurl }}{% link configuration/file-transfer-protocols.md %})
- [Email]({{ site.baseurl }}{% link configuration/email.md %})

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layout: page
title: Archivers
---
ENiGMA½ can detect and process various archive formats such as zip and arj for a variety of tasks from file upload processing to EchoMail bundle compress/decompression. The `archives` section of `config.hjson` is used to override defaults, add new handlers, and so on.
## Archivers
ENiGMA½ can detect and process various archive formats such as zip and arj for a variety of tasks from file upload processing to EchoMail bundle compress/decompression. The `archives` section of `config.hjson` is used to override defaults, add new handlers, and so on.
Archivers are manged via the `archives:archivers` configuration block of `config.hjson`. Each entry in this section defines an **external archiver** that can be referenced in other sections of `config.hjson` as and in code. Entries define how to `compress`, `decompress` (a full archive), `list`, and `extract` (specific files from an archive).
### Predefined Archivers
The following archivers are pre-configured in ENiGMA½ as of this writing. Remember that you can override settings or add new handlers!
#### ZZip
* Formats: .7z, .bzip2, .gzip/.gz, and more
* Key: `7Zip`
* Homepage/package: [7-zip.org](http://www.7-zip.org/). Generally obtained from a `p7zip` package in UNIX-like environments. See http://p7zip.sourceforge.net/ for details.
* Notes: Versions previous to 0.0.10-alpha defaulted to using 7zip for .zip files as well, but newer versions of the package give "volume" errors at times. See InfoZip below.
#### InfoZip
* Formats: .zip
* Key: InfoZip
* Homepage/package: http://infozip.sourceforge.net/. Often already available in Linux. You will need `zip` and `unzip` in ENiGMA's path.
#### Lha
* Formats: <a href="https://en.wikipedia.org/wiki/LHA_(file_format)">LHA</a> files such as .lzh.
* Key: `Lha`
* Homepage/package: `lhasa` on most UNIX-like environments. See also https://fragglet.github.io/lhasa/ and https://web.archive.org/web/20191023045303/http://www2m.biglobe.ne.jp/~dolphin/lha/lha-unix.htm
#### Lzx
* Formats: <a href="https://en.wikipedia.org/wiki/LZX_(algorithm)#Amiga_LZX">Amiga LZX</a>
* Key: `Lzx`
* Homepage/package: `unlzx` under most UNIX-like platforms ([Debian/Ubuntu](https://launchpad.net/~rzr/+archive/ubuntu/ppa/+build/2486127), [RedHat](https://fedora.pkgs.org/32/rpm-sphere-x86_64/unlzx-1.1-4.1.x86_64.rpm.html), [Source](http://xavprods.free.fr/lzx/))
#### Arj
* Formats: .arj
* Key: `Arj`
* Homepage/package: `arj` on most UNIX-like environments.
#### Rar
* Formats: .Rar
* Key: `Rar`
* Homepage/package: `unrar` on most UNIX-like environments. See also https://blog.hostonnet.com/unrar
:bulb: Generally you do not need to anything beyond installing supporting binaries. No `config.hjson` editing necessary; Please see [External Binaries](external-binaries.md)!
### Archiver Configuration
Archiver entries in `config.hjson` are mostly self explanatory with the exception of `list` commands that require some additional information. The `args` member for an entry is an array of arguments to pass to `cmd`. Some variables are available to `args` that will be expanded by the system:

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File transfer protocols are managed via the `fileTransferProtocols` configuration block of `config.hjson`. Each entry defines an **external** protocol handler that can be used for uploads (recv), downloads (send), or both. Depending on the protocol and handler, batch receiving of files (uploads) may also be available.
### Predefined File Transfer Protocols
The following file transfer protocols are pre-configured in ENiGMA½ as of this writing. System operators may override or extend this list. PRs are welcome for pre-configured additions!
Please see [External Binaries](external-binaries.md) for a table of built in / predefined protocol handlers. You will need to have the binaries in ENiGMA's PATH.
#### SEXYZ
[SEXYZ from Synchronet](http://wiki.synchro.net/util:sexyz) offers a nice X, Y, and ZModem implementation including ZModem-8k & works under *nix and Windows based systems. As of this writing, ENiGMA½ is pre-configured to support ZModem-8k, XModem, and YModem using SEXYZ. An x86_64 Linux binary, and hopefully more in the future, [can be downloaded here](https://l33t.codes/bbs-linux-binaries/).

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```
## Other Recommended Packages
ENiGMA BBS makes use of a few packages for archive and legacy protocol support. They're not pre-requisites for running ENiGMA, but without them you'll miss certain functionality. Once installed, they should be made available on your system path.
ENiGMA BBS makes use of a few packages for archive and legacy protocol support. They're not pre-requisites for running ENiGMA, but without them you'll miss certain functionality. Once installed, they should be made available on your systems `PATH`.
| Package | Description | Debian/Ubuntu Package (APT/DEP) | Red Hat Package (YUM/RPM) | Windows Package |
|------------|-----------------------------------|--------------------------------------------|---------------------------------------------------|------------------------------------------------------------------|
| arj | Unpacking arj archives | `arj` | n/a, binaries [here](http://arj.sourceforge.net/) | [ARJ](http://arj.sourceforge.net/) |
| 7zip | Unpacking zip, rar, archives | `p7zip-full` | `p7zip-full` | [7-zip](http://www.7-zip.org/) |
| lha | Unpacking lha archives | `lhasa` | n/a, source [here](https://web.archive.org/web/20200301124852/http://www2m.biglobe.ne.jp/~dolphin/lha/lha.htm) | Unknown |
| Rar | Unpacking rar archives | `unrar` | n/a, binaries [here](https://www.rarlab.com/download.htm) | Unknown |
| lrzsz | sz/rz: X/Y/Z protocol support | `lrzsz` | `lrzsz` | Unknown |
| sexyz | SexyZ protocol support | [sexyz](https://l33t.codes/outgoing/sexyz) | [sexyz](https://l33t.codes/outgoing/sexyz) | Available with [Synchronet](http://wiki.synchro.net/install:win) |
| exiftool | [ExifTool](https://www.sno.phy.queensu.ca/~phil/exiftool/) | libimage-exiftool-perl | perl-Image-ExifTool | Unknown
| xdms | Unpack/view Amiga DMS | [xdms](http://manpages.ubuntu.com/manpages/trusty/man1/xdms.1.html) | xdms | Unknown
:information_source: Please see [External Binaries](/docs/configuration/external-binaries.md) for information on setting these up.
:information_source: Please see also [Archivers](/docs/configuration/archivers.md) and [File Transfer Protocols](/docs/configuration/file-transfer-protocols.md) for additional recommended binaries and configuration.
:information_source: Additional information in [Archivers](/docs/configuration/archivers.md) and [File Transfer Protocols](/docs/configuration/file-transfer-protocols.md)
## Config Files
You'll need a basic configuration to get started. The main system configuration is handled via `config/config.hjson`. This is an [HJSON](http://hjson.org/) file (compiliant JSON is also OK). See [Configuration](../configuration/) for more information.