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89 lines
3.9 KiB
Markdown
89 lines
3.9 KiB
Markdown
# RSS to ActivityPub Converter
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This is a server that lets users convert any RSS feed to an ActivityPub actor that can be followed by users on ActivityPub-compliant social networks like Mastodon. For a demo of this in action, see https://bots.tinysubversions.com/convert/
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This is based on my [Express ActivityPub Server](https://github.com/dariusk/express-activitypub), a simple Node/Express server that supports a subset of ActivityPub.
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## Requirements
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This requires Node.js v10.10.0 or above.
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## Installation
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Clone the repository, then `cd` into its root directory. Install dependencies:
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`npm i`
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Then copy `config.json.template` to `config.json`:
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`cp config.json.template config.json`
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Update your new `config.json` file:
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```js
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{
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"DOMAIN": "mydomain.com",
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"PORT_HTTP": "3000",
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"PORT_HTTPS": "8443",
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"PRIVKEY_PATH": "/path/to/your/ssl/privkey.pem",
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"CERT_PATH": "/path/to/your/ssl/cert.pem"
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}
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```
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* `DOMAIN`: your domain! this should be a discoverable domain of some kind like "example.com" or "rss.example.com"
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* `PORT_HTTP`: the http port that Express runs on
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* `PORT_HTTPS`: the https port that Express runs on
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* `PRIVKEY_PATH`: point this to your private key you got from Certbot or similar
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* `CERT_PATH`: point this to your cert you got from Certbot or similar
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Run the server!
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`node index.js`
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Go to `https://whateveryourdomainis.com:3000/convert` or whatever port you selected for HTTP, and enter an RSS feed and a username. If all goes well it will create a new ActivityPub user with instructions on how to view the user.
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## Sending out updates to followers
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There is also a file called `updateFeeds.js` that needs to be run on a cron job or similar scheduler. I like to run mine once a minute. It queries every RSS feed in the database to see if there has been a change to the feed. If there is a new post, it sends out the new post to everyone subscribed to its corresponding ActivityPub Actor.
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## Local testing
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You can use a service like [ngrok](https://ngrok.com/) to test things out before you deploy on a real server. All you need to do is install ngrok and run `ngrok http 3000` (or whatever port you're using if you changed it). Then go to your `config.json` and update the `DOMAIN` field to whatever `abcdef.ngrok.io` domain that ngrok gives you and restart your server.
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Then make sure to manually run `updateFeed.js` when the feed changes. I recommend having your own test RSS feed that you can update whenever you want.
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## Database
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This server uses a SQLite database stored in the file `bot-node.db` to keep track of all the data. To connect directly to the database for debugging, from the root directory of the project, run:
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```bash
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sqlite3 bot-node.db
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```
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There are two tables in the database: `accounts` and `feeds`.
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### `accounts`
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This table keeps track of all the data needed for the accounts. Columns:
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* `name` `TEXT PRIMARY KEY`: the account name, in the form `thename@example.com`
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* `privkey` `TEXT`: the RSA private key for the account
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* `pubkey` `TEXT`: the RSA public key for the account
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* `webfinger` `TEXT`: the entire contents of the webfinger JSON served for this account
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* `actor` `TEXT`: the entire contents of the actor JSON served for this account
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* `apikey` `TEXT`: the API key associated with this account
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* `followers` `TEXT`: a JSON-formatted array of the URL for the Actor JSON of all followers, in the form `["https://remote.server/users/somePerson", "https://another.remote.server/ourUsers/anotherPerson"]`
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* `messages` `TEXT`: not yet used but will eventually store all messages so we can render them on a "profile" page
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### `feeds`
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This table keeps track of all the data needed for the feeds. Columns:
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* `feed` `TEXT PRIMARY KEY`: the URI of the RSS feed
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* `username` `TEXT`: the username associated with the RSS feed
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* `content` `TEXT`: the most recent copy fetched of the RSS feed's contents
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## License
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Copyright (c) 2018 Darius Kazemi. Licensed under the MIT license.
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