mirror of https://github.com/status-im/codimd.git
321 lines
20 KiB
Markdown
321 lines
20 KiB
Markdown
HackMD Community Edition
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===
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[![Standard - JavaScript Style Guide][standardjs-image]][standardjs-url]
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[![Join the chat at https://gitter.im/hackmdio/hackmd][gitter-image]][gitter-url]
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[![#HackMD on matrix.org][matrix.org-image]][matrix.org-url]
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[![build status][travis-image]][travis-url]
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[![version][github-version-badge]][github-release-page]
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[![Help Contribute to Open Source][codetriage-image]][codetriage-url]
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HackMD lets you create realtime collaborative markdown notes on all platforms.
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Inspired by Hackpad, with more focus on speed and flexibility.
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Still in the early stage, feel free to fork or contribute to HackMD.
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Thanks for using! :smile:
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<!-- START doctoc generated TOC please keep comment here to allow auto update -->
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<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
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# Table of Contents
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- [Browsers Requirement](#browsers-requirement)
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- [Installation](#installation)
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- [Getting started (Native install)](#getting-started-native-install)
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- [Prerequisite](#prerequisite)
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- [Instructions](#instructions)
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- [Heroku Deployment](#heroku-deployment)
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- [HackMD by docker container](#hackmd-by-docker-container)
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- [Upgrade](#upgrade)
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- [Native setup](#native-setup)
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- [Configuration](#configuration)
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- [Environment variables (will overwrite other server configs)](#environment-variables-will-overwrite-other-server-configs)
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- [Application settings `config.json`](#application-settings-configjson)
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- [Third-party integration API key settings](#third-party-integration-api-key-settings)
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- [Third-party integration OAuth callback URLs](#third-party-integration-oauth-callback-urls)
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- [Developer Notes](#developer-notes)
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- [Structure](#structure)
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- [Operational Transformation](#operational-transformation)
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- [License](#license)
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<!-- END doctoc generated TOC please keep comment here to allow auto update -->
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# Browsers Requirement
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-  Chrome >= 47, Chrome for Android >= 47
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-  Safari >= 9, iOS Safari >= 8.4
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-  Firefox >= 44
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-  IE >= 9, Edge >= 12
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-  Opera >= 34, Opera Mini not supported
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- Android Browser >= 4.4
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# Installation
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## Getting started (Native install)
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### Prerequisite
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- Node.js 6.x or up (test up to 7.5.0)
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- Database (PostgreSQL, MySQL, MariaDB, SQLite, MSSQL) use charset `utf8`
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- npm (and its dependencies, especially [uWebSockets](https://github.com/uWebSockets/uWebSockets#nodejs-developers), [node-gyp](https://github.com/nodejs/node-gyp#installation))
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- For **building** HackMD we recommend to use a machine with at least **2GB** RAM
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### Instructions
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1. Download a release and unzip or clone into a directory
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2. Enter the directory and type `bin/setup`, which will install npm dependencies and create configs. The setup script is written in Bash, you would need bash as a prerequisite.
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3. Setup the configs, see more below
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4. Setup environment variables which will overwrite the configs
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5. Build front-end bundle by `npm run build` (use `npm run dev` if you are in development)
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6. Run the server as you like (node, forever, pm2)
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## Heroku Deployment
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You can quickly setup a sample Heroku HackMD application by clicking the button below.
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[](https://heroku.com/deploy?template=https://github.com/hackmdio/hackmd/tree/master)
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If you deploy it without the button, keep in mind to use the right buildpacks. For details check `app.json`.
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## HackMD by docker container
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[](http://play-with-docker.com?stack=https://github.com/hackmdio/docker-hackmd/raw/master/docker-compose.yml&stack_name=hackmd)
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**Debian-based version:**
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[](https://microbadger.com/images/hackmdio/hackmd "Get your own version badge on microbadger.com") [](https://microbadger.com/images/hackmdio/hackmd "Get your own image badge on microbadger.com")
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**Alpine-based version:**
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[](https://microbadger.com/images/hackmdio/hackmd:alpine "Get your own version badge on microbadger.com") [](https://microbadger.com/images/hackmdio/hackmd:alpine "Get your own image badge on microbadger.com")
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The easiest way to setup HackMD using docker are using the following three commands:
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```console
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git clone https://github.com/hackmdio/docker-hackmd.git
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cd docker-hackmd
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docker-compose up
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```
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Read more about it in the [docker repository…](https://github.com/hackmdio/docker-hackmd)
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# Upgrade
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## Native setup
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If you are upgrading HackMD from an older version, follow these steps:
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1. Fully stop your old server first (important)
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2. `git pull` or do whatever that updates the files
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3. `npm install` to update dependencies
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4. Build front-end bundle by `npm run build` (use `npm run dev` if you are in development)
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5. Modify the file named `.sequelizerc`, change the value of the variable `url` with your db connection string
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For example: `postgres://username:password@localhost:5432/hackmd`
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6. Run `node_modules/.bin/sequelize db:migrate`, this step will migrate your db to the latest schema
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7. Start your whole new server!
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* [migration-to-0.5.0](https://github.com/hackmdio/migration-to-0.5.0)
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We don't use LZString to compress socket.io data and DB data after version 0.5.0.
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Please run the migration tool if you're upgrading from the old version.
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* [migration-to-0.4.0](https://github.com/hackmdio/migration-to-0.4.0)
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We've dropped MongoDB after version 0.4.0.
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So here is the migration tool for you to transfer the old DB data to the new DB.
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This tool is also used for official service.
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# Configuration
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There are some config settings you need to change in the files below.
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```
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./config.json ----application settings
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```
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## Environment variables (will overwrite other server configs)
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| variables | example values | description |
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| --------- | ------ | ----------- |
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| `NODE_ENV` | `production` or `development` | set current environment (will apply corresponding settings in the `config.json`) |
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| `DEBUG` | `true` or `false` | set debug mode; show more logs |
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| `HMD_DOMAIN` | `hackmd.io` | domain name |
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| `HMD_URL_PATH` | `hackmd` | sub URL path, like `www.example.com/<URL_PATH>` |
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| `HMD_PORT` | `80` | web app port |
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| `HMD_ALLOW_ORIGIN` | `localhost, hackmd.io` | domain name whitelist (use comma to separate) |
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| `HMD_PROTOCOL_USESSL` | `true` or `false` | set to use SSL protocol for resources path (only applied when domain is set) |
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| `HMD_URL_ADDPORT` | `true` or `false` | set to add port on callback URL (ports `80` or `443` won't be applied) (only applied when domain is set) |
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| `HMD_USECDN` | `true` or `false` | set to use CDN resources or not (default is `true`) |
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| `HMD_ALLOW_ANONYMOUS` | `true` or `false` | set to allow anonymous usage (default is `true`) |
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| `HMD_ALLOW_ANONYMOUS_EDITS` | `true` or `false` | if `allowanonymous` is `true`, allow users to select `freely` permission, allowing guests to edit existing notes (default is `false`) |
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| `HMD_ALLOW_FREEURL` | `true` or `false` | set to allow new note creation by accessing a nonexistent note URL |
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| `HMD_DEFAULT_PERMISSION` | `freely`, `editable`, `limited`, `locked` or `private` | set notes default permission (only applied on signed users) |
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| `HMD_DB_URL` | `mysql://localhost:3306/database` | set the database URL |
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| `HMD_FACEBOOK_CLIENTID` | no example | Facebook API client id |
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| `HMD_FACEBOOK_CLIENTSECRET` | no example | Facebook API client secret |
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| `HMD_TWITTER_CONSUMERKEY` | no example | Twitter API consumer key |
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| `HMD_TWITTER_CONSUMERSECRET` | no example | Twitter API consumer secret |
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| `HMD_GITHUB_CLIENTID` | no example | GitHub API client id |
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| `HMD_GITHUB_CLIENTSECRET` | no example | GitHub API client secret |
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| `HMD_GITLAB_SCOPE` | `read_user` or `api` | GitLab API requested scope (default is `api`) (GitLab snippet import/export need `api` scope) |
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| `HMD_GITLAB_BASEURL` | no example | GitLab authentication endpoint, set to use other endpoint than GitLab.com (optional) |
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| `HMD_GITLAB_CLIENTID` | no example | GitLab API client id |
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| `HMD_GITLAB_CLIENTSECRET` | no example | GitLab API client secret |
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| `HMD_MATTERMOST_BASEURL` | no example | Mattermost authentication endpoint |
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| `HMD_MATTERMOST_CLIENTID` | no example | Mattermost API client id |
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| `HMD_MATTERMOST_CLIENTSECRET` | no example | Mattermost API client secret |
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| `HMD_DROPBOX_CLIENTID` | no example | Dropbox API client id |
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| `HMD_DROPBOX_CLIENTSECRET` | no example | Dropbox API client secret |
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| `HMD_GOOGLE_CLIENTID` | no example | Google API client id |
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| `HMD_GOOGLE_CLIENTSECRET` | no example | Google API client secret |
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| `HMD_LDAP_URL` | `ldap://example.com` | URL of LDAP server |
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| `HMD_LDAP_BINDDN` | no example | bindDn for LDAP access |
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| `HMD_LDAP_BINDCREDENTIALS` | no example | bindCredentials for LDAP access |
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| `HMD_LDAP_TOKENSECRET` | `supersecretkey` | secret used for generating access/refresh tokens |
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| `HMD_LDAP_SEARCHBASE` | `o=users,dc=example,dc=com` | LDAP directory to begin search from |
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| `HMD_LDAP_SEARCHFILTER` | `(uid={{username}})` | LDAP filter to search with |
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| `HMD_LDAP_SEARCHATTRIBUTES` | `displayName, mail` | LDAP attributes to search with (use comma to separate) |
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| `HMD_LDAP_USERIDFIELD` | `uidNumber` or `uid` or `sAMAccountName` | The LDAP field which is used uniquely identify a user on HackMD |
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| `HMD_LDAP_USERNAMEFIELD` | Fallback to userid | The LDAP field which is used as the username on HackMD |
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| `HMD_LDAP_TLS_CA` | `server-cert.pem, root.pem` | Root CA for LDAP TLS in PEM format (use comma to separate) |
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| `HMD_LDAP_PROVIDERNAME` | `My institution` | Optional name to be displayed at login form indicating the LDAP provider |
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| `HMD_SAML_IDPSSOURL` | `https://idp.example.com/sso` | authentication endpoint of IdP. for details, see [guide](docs/guides/auth.md#saml-onelogin). |
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| `HMD_SAML_IDPCERT` | `/path/to/cert.pem` | certificate file path of IdP in PEM format |
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| `HMD_SAML_ISSUER` | no example | identity of the service provider (optional, default: serverurl)" |
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| `HMD_SAML_IDENTIFIERFORMAT` | no example | name identifier format (optional, default: `urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress`) |
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| `HMD_SAML_GROUPATTRIBUTE` | `memberOf` | attribute name for group list (optional) |
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| `HMD_SAML_REQUIREDGROUPS` | `Hackmd-users` | group names that allowed (use vertical bar to separate) (optional) |
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| `HMD_SAML_EXTERNALGROUPS` | `Temporary-staff` | group names that not allowed (use vertical bar to separate) (optional) |
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| `HMD_SAML_ATTRIBUTE_ID` | `sAMAccountName` | attribute map for `id` (optional, default: NameID of SAML response) |
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| `HMD_SAML_ATTRIBUTE_USERNAME` | `mailNickname` | attribute map for `username` (optional, default: NameID of SAML response) |
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| `HMD_SAML_ATTRIBUTE_EMAIL` | `mail` | attribute map for `email` (optional, default: NameID of SAML response if `HMD_SAML_IDENTIFIERFORMAT` is default) |
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| `HMD_IMGUR_CLIENTID` | no example | Imgur API client id |
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| `HMD_EMAIL` | `true` or `false` | set to allow email signin |
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| `HMD_ALLOW_PDF_EXPORT` | `true` or `false` | Enable or disable PDF exports |
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| `HMD_ALLOW_EMAIL_REGISTER` | `true` or `false` | set to allow email register (only applied when email is set, default is `true`. Note `bin/manage_users` might help you if registration is `false`.) |
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| `HMD_IMAGE_UPLOAD_TYPE` | `imgur`, `s3`, `minio` or `filesystem` | Where to upload image. For S3, see our Image Upload Guides for [S3](docs/guides/s3-image-upload.md) or [Minio](docs/guides/minio-image-upload.md) |
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| `HMD_S3_ACCESS_KEY_ID` | no example | AWS access key id |
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| `HMD_S3_SECRET_ACCESS_KEY` | no example | AWS secret key |
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| `HMD_S3_REGION` | `ap-northeast-1` | AWS S3 region |
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| `HMD_S3_BUCKET` | no example | AWS S3 bucket name |
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| `HMD_MINIO_ACCESS_KEY` | no example | Minio access key |
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| `HMD_MINIO_SECRET_KEY` | no example | Minio secret key |
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| `HMD_MINIO_ENDPOINT` | `minio.example.org` | Address of your Minio endpoint/instance |
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| `HMD_MINIO_PORT` | `9000` | Port that is used for your Minio instance |
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| `HMD_MINIO_SECURE` | `true` | If set to `true` HTTPS is used for Minio |
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| `HMD_HSTS_ENABLE` | ` true` | set to enable [HSTS](https://en.wikipedia.org/wiki/HTTP_Strict_Transport_Security) if HTTPS is also enabled (default is ` true`) |
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| `HMD_HSTS_INCLUDE_SUBDOMAINS` | `true` | set to include subdomains in HSTS (default is `true`) |
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| `HMD_HSTS_MAX_AGE` | `31536000` | max duration in seconds to tell clients to keep HSTS status (default is a year) |
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| `HMD_HSTS_PRELOAD` | `true` | whether to allow preloading of the site's HSTS status (e.g. into browsers) |
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| `HMD_CSP_ENABLE` | `true` | whether to enable Content Security Policy (directives cannot be configured with environment variables) |
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## Application settings `config.json`
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| variables | example values | description |
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| --------- | ------ | ----------- |
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| `debug` | `true` or `false` | set debug mode, show more logs |
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| `domain` | `localhost` | domain name |
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| `urlpath` | `hackmd` | sub URL path, like `www.example.com/<urlpath>` |
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| `port` | `80` | web app port |
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| `alloworigin` | `['localhost']` | domain name whitelist |
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| `usessl` | `true` or `false` | set to use SSL server (if `true`, will auto turn on `protocolusessl`) |
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| `hsts` | `{"enable": true, "maxAgeSeconds": 31536000, "includeSubdomains": true, "preload": true}` | [HSTS](https://en.wikipedia.org/wiki/HTTP_Strict_Transport_Security) options to use with HTTPS (default is the example value, max age is a year) |
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| `csp` | `{"enable": true, "directives": {"scriptSrc": "trustworthy-scripts.example.com"}, "upgradeInsecureRequests": "auto", "addDefaults": true}` | Configures [Content Security Policy](https://helmetjs.github.io/docs/csp/). Directives are passed to Helmet - see [their documentation](https://helmetjs.github.io/docs/csp/) for more information on the format. Some defaults are added to the configured values so that the application doesn't break. To disable this behaviour, set `addDefaults` to `false`. Further, if `usecdn` is on, some CDN locations are allowed too. By default (`auto`), insecure (HTTP) requests are upgraded to HTTPS via CSP if `usessl` is on. To change this behaviour, set `upgradeInsecureRequests` to either `true` or `false`. |
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| `protocolusessl` | `true` or `false` | set to use SSL protocol for resources path (only applied when domain is set) |
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| `urladdport` | `true` or `false` | set to add port on callback URL (ports `80` or `443` won't be applied) (only applied when domain is set) |
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| `usecdn` | `true` or `false` | set to use CDN resources or not (default is `true`) |
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| `allowanonymous` | `true` or `false` | set to allow anonymous usage (default is `true`) |
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| `allowanonymousedits` | `true` or `false` | if `allowanonymous` is `true`: allow users to select `freely` permission, allowing guests to edit existing notes (default is `false`) |
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| `allowfreeurl` | `true` or `false` | set to allow new note creation by accessing a nonexistent note URL |
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| `defaultpermission` | `freely`, `editable`, `limited`, `locked`, `protected` or `private` | set notes default permission (only applied on signed users) |
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| `dburl` | `mysql://localhost:3306/database` | set the db URL; if set, then db config (below) won't be applied |
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| `db` | `{ "dialect": "sqlite", "storage": "./db.hackmd.sqlite" }` | set the db configs, [see more here](http://sequelize.readthedocs.org/en/latest/api/sequelize/) |
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| `sslkeypath` | `./cert/client.key` | SSL key path (only need when you set `usessl`) |
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| `sslcertpath` | `./cert/hackmd_io.crt` | SSL cert path (only need when you set `usessl`) |
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| `sslcapath` | `['./cert/COMODORSAAddTrustCA.crt']` | SSL ca chain (only need when you set `usessl`) |
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| `dhparampath` | `./cert/dhparam.pem` | SSL dhparam path (only need when you set `usessl`) |
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| `tmppath` | `./tmp/` | temp directory path |
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| `defaultnotepath` | `./public/default.md` | default note file path |
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| `docspath` | `./public/docs` | docs directory path |
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| `indexpath` | `./public/views/index.ejs` | index template file path |
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| `hackmdpath` | `./public/views/hackmd.ejs` | hackmd template file path |
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| `errorpath` | `./public/views/error.ejs` | error template file path |
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| `prettypath` | `./public/views/pretty.ejs` | pretty template file path |
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| `slidepath` | `./public/views/slide.hbs` | slide template file path |
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| `sessionname` | `connect.sid` | cookie session name |
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| `sessionsecret` | `secret` | cookie session secret |
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| `sessionlife` | `14 * 24 * 60 * 60 * 1000` | cookie session life |
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| `staticcachetime` | `1 * 24 * 60 * 60 * 1000` | static file cache time |
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| `heartbeatinterval` | `5000` | socket.io heartbeat interval |
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| `heartbeattimeout` | `10000` | socket.io heartbeat timeout |
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| `documentmaxlength` | `100000` | note max length |
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| `email` | `true` or `false` | set to allow email signin |
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| `allowemailregister` | `true` or `false` | set to allow email register (only applied when email is set, default is `true`. Note `bin/manage_users` might help you if registration is `false`.) |
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| `imageuploadtype` | `imgur`(default), `s3`, `minio` or `filesystem` | Where to upload image
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| `minio` | `{ "accessKey": "YOUR_MINIO_ACCESS_KEY", "secretKey": "YOUR_MINIO_SECRET_KEY", "endpoint": "YOUR_MINIO_HOST", port: 9000, secure: true }` | When `imageuploadtype` is set to `minio`, you need to set this key. Also checkout our [Minio Image Upload Guide](docs/guides/minio-image-upload.md) |
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| `s3` | `{ "accessKeyId": "YOUR_S3_ACCESS_KEY_ID", "secretAccessKey": "YOUR_S3_ACCESS_KEY", "region": "YOUR_S3_REGION" }` | When `imageuploadtype` be set to `s3`, you would also need to setup this key, check our [S3 Image Upload Guide](docs/guides/s3-image-upload.md) |
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| `s3bucket` | `YOUR_S3_BUCKET_NAME` | bucket name when `imageuploadtype` is set to `s3` or `minio` |
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## Third-party integration API key settings
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| service | settings location | description |
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| ------- | --------- | ----------- |
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| facebook, twitter, github, gitlab, mattermost, dropbox, google, ldap, saml | environment variables or `config.json` | for signin |
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| imgur, s3, minio | environment variables or `config.json` | for image upload |
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| google drive(`google/apiKey`, `google/clientID`), dropbox(`dropbox/appKey`) | `config.json` | for export and import |
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## Third-party integration OAuth callback URLs
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| service | callback URL (after the server URL) |
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| ------- | --------- |
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| facebook | `/auth/facebook/callback` |
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| twitter | `/auth/twitter/callback` |
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| github | `/auth/github/callback` |
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| gitlab | `/auth/gitlab/callback` |
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| mattermost | `/auth/mattermost/callback` |
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| dropbox | `/auth/dropbox/callback` |
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| google | `/auth/google/callback` |
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| saml | `/auth/saml/callback` |
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# Developer Notes
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## Structure
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```text
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hackmd/
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├── tmp/ --- temporary files
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├── docs/ --- document files
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├── lib/ --- server libraries
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└── public/ --- client files
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├── css/ --- css styles
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├── js/ --- js scripts
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├── vendor/ --- vendor includes
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└── views/ --- view templates
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```
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## Operational Transformation
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From 0.3.2, we started supporting operational transformation.
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It makes concurrent editing safe and will not break up other users' operations.
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Additionally, now can show other clients' selections.
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See more at [http://operational-transformation.github.io/](http://operational-transformation.github.io/)
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# License
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**License under AGPL.**
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[gitter-image]: https://badges.gitter.im/Join%20Chat.svg
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[gitter-url]: https://gitter.im/hackmdio/hackmd?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge
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[matrix.org-image]: https://img.shields.io/badge/Matrix.org-%23HackMD@matrix.org-green.svg
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[matrix.org-url]: https://riot.im/app/#/room/#hackmd:matrix.org
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[travis-image]: https://travis-ci.org/hackmdio/hackmd.svg?branch=master
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[travis-url]: https://travis-ci.org/hackmdio/hackmd
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[github-version-badge]: https://img.shields.io/github/release/hackmdio/hackmd.svg
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[github-release-page]: https://github.com/hackmdio/hackmd/releases
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[standardjs-image]: https://cdn.rawgit.com/feross/standard/master/badge.svg
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[standardjs-url]: https://github.com/feross/standard
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[codetriage-image]: https://www.codetriage.com/hackmdio/hackmd/badges/users.svg
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[codetriage-url]: https://www.codetriage.com/hackmdio/hackmd
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