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Start a preconfigured WebDAV server using cryptography and compression

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# Crypted WebDAV Server

Start a preconfigured WebDAV server (based on [webdav-server](https://www.npmjs.com/package/webdav-server)), which store files in a folder, encrypt and compress them. The encryption is AES256 CBC using a master password.

## Install

```bash
npm i -g cwdav
```

## Usage

```bash
cwdav [<config-file-json>]
cwdav2 [<config-file-v2-json>]

# Load the file './cwdav.json' or, if it doesn't exist,
# load a default configuration (store all in the './data'
# folder, creates it if it doesn't exist).
cwdav

# Create a crypted webdav server for local use, using
# default settings.
cwdav2

# Load a specific configuration file
cwdav "/home/dev/path/config/.cwdav.json"
cwdav .cwdav.json

cwdav2 "/home/dev/path/config/.cwdav.json"
cwdav2 .cwdav.json
```

## Configuration

### Verison 1

The default configuration file name is `cwdav.json`.

The string values can refer to another value with the `$(...)` pattern.

Here is an example of a configuration file :
```json
{
    "port": 1900,
    "container": "./data",
    "treeFile": "$(container)/tree",
    "tempTreeFile": "$(container)/tree.tmp",
    "treeSeed": "tree"
}
```

### Version 2

Here is an example of a configuration file :
```json
{
    "webdavServerOptions": {
        "port": 1900
    },
    "container": "./data",
    "masterFilePath": ".cwdav-tree"
}
```

## Note

For an unkown reason yet, if you set the *hostname* to `'localhost'` or `'127.0.0.1'`, the Windows embedded WebDAV client will be slower requesting to this server.

## As a module

## cwdav.execute

### cwdav.execute(callback : (webDAVServer, httpServer) => void)

Execute is a simple macro to start, quickly, from your code, a webdav server.

```javascript
const cwdav = require('cwdav');

cwdav.execute(() => {
    console.log('READY');
})
```

Is equivalent to :

```javascript
const cwdav = require('cwdav'),
      readline = require('readline-sync');

function execute(callback)
{
    // Load the configuration from the argument file, from the local 'cwdav.json' file or from the default values
    cwdav.config.load(process.argv[2], (e, config) => {
        if(e)
            throw e;
        
        // Ask to password to the user
        const password = readline.question('Password : ', {
            hideEchoBack: true
        });

// Initialize the server with the password and its configuration
        cwdav.init(password, config);
        // Load the saved state of the server or create a new one
        cwdav.load(() => {
            // Start the webdav server and bind an auto-saver for some HTTP methods
            cwdav.start((config, webDAVServer, httpServer) => {
                if(callback)
                    callback(config, webDAVServer, httpServer);
            })
        })
    })
}

execute(() => {
    console.log('READY');
})
```

## What to do with a WebDAV Server?

You can use it as a virtual repository to store data and allow other softwares to access to it.

For instance (Windows uses `\\localhost@<port>\DavWWWRoot\` to connect to the server ; Linux will need to mount the server or to use a webdav client) :
```javascript
const cwdav = require('cwdav'),
      fs = require('fs');

cwdav.execute((config) => {
    fs.writeFile('\\\\localhost@' + config.port + '\\DavWWWRoot\\data.json', JSON.stringify({ myData: 'data' }), (e) => {
        // ...
    })

// or
    
    fs.readFile('\\\\localhost@' + config.port + '\\DavWWWRoot\\data.json', (e, data) => {
        data = JSON.parse(data.toString());
        // ...
    })
})
```

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