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Authentication guide - SAML
===
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.
* If your IdP accepts metadata XML of the service provider to ease configuraion, use this url to download metadata XML.
* {{your-serverurl}}/auth/saml/metadata
* _Note: If not accessable from IdP, download to local once and upload to IdP._
* Change the value of `issuer`, `identifierFormat` to match your IdP.
* `issuer`: A unique id to identify the application to the IdP, which is the base URL of your HackMD as default
* `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.
* urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress (default)
* urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified
* config.json:
````javascript
{
"production": {
"saml": {
/* omitted */
"issuer": "myhackmd"
"identifierFormat": "urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified"
}
}
}
````
* environment variables
````
HMD_SAML_ISSUER=myhackmd
HMD_SAML_IDENTIFIERFORMAT=urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified
````
* Change mapping of attribute names to customize the displaying user name and email address to match your IdP.
* `attribute`: A dictionary to map attribute names
* `attribute.id`: A primary key of user table for your HackMD
* `attribute.username`: Attribute name of displaying user name on HackMD
* `attribute.email`: Attribute name of email address, which will be also used for Gravatar
* _Note: Default value of all attributes is NameID of SAML response, which is email address if `identifierFormat` is default._
* config.json:
````javascript
{
"production": {
"saml": {
/* omitted */
"attribute": {
"id": "sAMAccountName",
"username": "displayName",
"email": "mail"
}
}
}
}
````
* environment variables
````
HMD_SAML_ATTRIBUTE_ID=sAMAccountName
HMD_SAML_ATTRIBUTE_USERNAME=nickName
HMD_SAML_ATTRIBUTE_EMAIL=mail
````
* If you want to controll permission by group membership, add group attribute name and required group (allowed) or external group (not allowed).
* `groupAttribute`: An attribute name of group membership
* `requiredGroups`: Group names array for allowed access to HackMD. Use vertical bar to separate for environment variables.
* `externalGroups`: Group names array for not allowed access to HackMD. Use vertical bar to separate for environment variables.
* _Note: Evaluates `externalGroups` first_
* config.json:
````javascript
{
"production": {
"saml": {
/* omitted */
"groupAttribute": "memberOf",
"requiredGroups": [ "hackmd-users", "board-members" ],
"externalGroups": [ "temporary-staff" ]
}
}
}
````
* environment variables
````
HMD_SAML_GROUPATTRIBUTE=memberOf
HMD_SAML_REQUIREDGROUPS=hackmd-users|board-members
HMD_SAML_EXTERNALGROUPS=temporary-staff
````
|
