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97 lines
3.4 KiB
Markdown
97 lines
3.4 KiB
Markdown
# Authentication guide - SAML
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*Note:* This guide was written before the renaming. Just replace `HackMD` with `CodiMD` in your mind :smile: thanks!
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The basic procedure is the same as the case of OneLogin which is mentioned in [OneLogin-Guide](./saml-onelogin.md). If you want to match your IdP, you can use more configurations as below.
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- If your IdP accepts metadata XML of the service provider to ease configuration, use this url to download metadata XML.
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- {{your-serverurl}}/auth/saml/metadata
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- *Note:* If not accessible from IdP, download to local once and upload to IdP.
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- Change the value of `issuer`, `identifierFormat` to match your IdP.
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- `issuer`: A unique id to identify the application to the IdP, which is the base URL of your CodiMD as default
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- `identifierFormat`: A format of unique id to identify the user of IdP, which is the format based on email address as default. It is recommend that you use as below.
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- urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress (default)
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- urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified
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- `config.json`:
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```javascript
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{
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"production": {
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"saml": {
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/* omitted */
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"issuer": "mycodimd"
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"identifierFormat": "urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified"
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}
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}
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}
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```
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- environment variables
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```env
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CMD_SAML_ISSUER=mycodimd
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CMD_SAML_IDENTIFIERFORMAT=urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified
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```
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- Change mapping of attribute names to customize the displaying user name and email address to match your IdP.
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- `attribute`: A dictionary to map attribute names
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- `attribute.id`: A primary key of user table for your CodiMD
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- `attribute.username`: Attribute name of displaying user name on CodiMD
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- `attribute.email`: Attribute name of email address, which will be also used for Gravatar
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- *Note:* Default value of all attributes is NameID of SAML response, which is email address if `identifierFormat` is default.
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- `config.json`:
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```javascript
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{
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"production": {
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"saml": {
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/* omitted */
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"attribute": {
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"id": "sAMAccountName",
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"username": "displayName",
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"email": "mail"
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}
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}
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}
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}
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```
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- environment variables
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```sh
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CMD_SAML_ATTRIBUTE_ID=sAMAccountName
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CMD_SAML_ATTRIBUTE_USERNAME=nickName
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CMD_SAML_ATTRIBUTE_EMAIL=mail
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```
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- If you want to control permission by group membership, add group attribute name and required group (allowed) or external group (not allowed).
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- `groupAttribute`: An attribute name of group membership
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- `requiredGroups`: Group names array for allowed access to CodiMD. Use vertical bar to separate for environment variables.
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- `externalGroups`: Group names array for not allowed access to CodiMD. Use vertical bar to separate for environment variables.
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- *Note:* Evaluates `externalGroups` first
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- `config.json`:
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```javascript
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{
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"production": {
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"saml": {
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/* omitted */
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"groupAttribute": "memberOf",
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"requiredGroups": [ "codimd-users", "board-members" ],
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"externalGroups": [ "temporary-staff" ]
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}
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}
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}
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```
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- environment variables
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```sh
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CMD_SAML_GROUPATTRIBUTE=memberOf
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CMD_SAML_REQUIREDGROUPS=codimd-users|board-members
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CMD_SAML_EXTERNALGROUPS=temporary-staff
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```
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