contented/README.md

# contented

[![](doc/image1.thumb.png)](doc/image1.png)

A file / image / paste upload server with a focus on embedding.

You can use contented as a standalone upload server, or you can use the SDK to embed its upload widget into another website.

## Features

- Drag and drop upload
- Multiple files upload
- Pastebin upload
- Custom drawing upload ([via drawingboard.js](https://github.com/Leimi/drawingboard.js))
- Ctrl-V upload
- SDK-oriented design for embedding, including CORS support
- Mobile friendly HTML interface
- Preserves uploaded filename and content-type metadata
- Hash verification (SHA512/256)
- Detect duplicate upload content and reuse storage
- Options to limit the upload filesize and the upload bandwidth
- Short URLs (using [Hashids](http://hashids.org) algorithm)
- Image thumbnailing

## Usage (Server)

```
Usage of contented:
  -data string
        Directory for stored content (default "")
  -db string
        Path for metadata database (default "contented.db")
  -diskFilesWorldReadable
        Save files as 0644 instead of 0600
  -enableHomepage
        Enable homepage (disable for embedded use only) (default true)
  -listen string
        IP/Port to bind server (default "127.0.0.1:80")
  -max int
        Maximum size of uploaded files in MiB (set zero for unlimited) (default 8)
  -speed int
        Maximum upload speed in bytes/sec (set zero for unlimited)
  -title string
        Title used in web interface (default "contented")
  -trustXForwardedFor
        Trust X-Forwarded-For reverse proxy headers
  -concurrentthumbs
        Simultaneous thumbnail generation (default 16)
```

If you are hosting behind a reverse proxy, remember to set its post body size parameter appropriately (e.g. `client_max_body_size` for nginx).

## Usage (HTTP)

The server responds on the following URLs:

URL                  |Method |Description
---------------------|-------|---
`/get/{ID}`          |`GET`  |Download item content
`/info/{ID}`         |`GET`  |Get item content metadata (JSON)
`/thumb/{Type}/{ID}` |`GET`  |Get item thumbnail image
`/about`             |`GET`  |Get server metadata (JSON)

## Usage (Embedding for web)

Your webpage should load the SDK from the contented server, then call the `contented.init` function to display the upload widget over the top of an existing DOM element. Your callback will be passed an array of file IDs of any uploaded items.

```html
<script type="text/javascript" src="SERVER_ADDR/sdk.js"></script>
contented.init("#target", function(/* String[] */ items) {});
```

## Changelog

NEXT:
- Feature: Option to limit concurrent thumbnail generation
- Enhancement: Set charset=UTF-8 when serving user-submitted text/plain content

2018-06-09: 1.2.1
- Feature: Add OpenGraph tags on preview pages, for rich metadata in chat applications
- Update thumbnailing library to improve quality
- Use dep for vendoring

2017-11-18: 1.2.0
- Feature: Thumbnail support
- Feature: File preview page
- Feature: Album mode (via URL `/p/{file1}-{file2}-...`)
- Feature: New `-diskFilesWorldReadable` option to save files with `0644` mode

2017-10-15: 1.1.0
- Feature: Drawing mode
- Feature: Ctrl+V image upload
- Feature: Option to trust X-Forwarded-For headers when using a reverse proxy
- Feature: Add `getDownloadURL`, `getInfoJSONURL`, `getPreviewURL` SDK methods
- Feature: Option to disable uploading via the homepage
- Feature: Add button to repeat when uploading from homepage
- Enhancement: Automatically load library dependencies
- Enhancement: Display homepage widget using the full screen size
- Include drawingboard.js 0.4.6 (MIT license)
- Fix a cosmetic issue with javascript console output
- Fix a cosmetic issue with error messages if an upload failed

2017-10-08: 1.0.1
- Fix an issue with CORS preflight requests
- Fix an issue with index URLs

2017-10-08: 1.0.0
- Initial public release
- Include jQuery 1.12.4 (MIT license)