meteor/docs/source/api/passwords.md

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Passwords	Documentation of Meteor's password-based accounts API.

The accounts-password package contains a full system for password-based authentication. In addition to the basic username and password-based sign-in process, it also supports email-based sign-in including address verification and password recovery emails.

The Meteor server stores passwords using the bcrypt algorithm. This helps protect against embarrassing password leaks if the server's database is compromised.

To add password support to your application, run this command in your terminal:

meteor add accounts-password

In addition to configuring the email package's MAIL_URL, it is critical that you set proper values (specifically the from address) in Accounts.emailTemplates to ensure proper delivery of e-mails!

You can construct your own user interface using the functions below, or use the accounts-ui package to include a turn-key user interface for password-based sign-in.

{% apibox "Accounts.createUser" %}

Or a promise based version of Accounts.createUser:

{% apibox "Accounts.createUserAsync" %}

On the client, this function logs in as the newly created user on successful completion. On the server, it returns the newly created user id.

On the client, you must pass password and at least one of username or email — enough information for the user to be able to log in again later. If there are existing users with a username or email only differing in case, createUser will fail. The callback's error.reason will be 'Username already exists.' or 'Email already exists.' In the latter case, the user can then either login or reset their password.

On the server, you do not need to specify password, but the user will not be able to log in until it has a password (eg, set with Accounts.setPasswordAsync). To create an account without a password on the server and still let the user pick their own password, call createUser with the email option and then call Accounts.sendEnrollmentEmail. This will send the user an email with a link to set their initial password.

By default the profile option is added directly to the new user document. To override this behavior, use Accounts.onCreateUser.

This function is only used for creating users with passwords. The external service login flows do not use this function.

Instead of modifying documents in the Meteor.users collection directly, use these convenience functions which correctly check for case insensitive duplicates before updates.

{% apibox "Accounts.createUserVerifyingEmail" %}

{% apibox "Accounts.setUsername" %}

{% apibox "Accounts.addEmailAsync" %}

By default, an email address is added with { verified: false }. Use Accounts.sendVerificationEmail to send an email with a link the user can use to verify their email address.

{% apibox "Accounts.replaceEmailAsync" %}

{% apibox "Accounts.removeEmail" %}

{% apibox "Accounts.verifyEmail" %}

If the user trying to verify the email has 2FA enabled, this error will be thrown:

• "Email verified, but user not logged in because 2FA is enabled [2fa-enabled]": No longer signing in the user automatically if the user has 2FA enabled.

This function accepts tokens passed into the callback registered with Accounts.onEmailVerificationLink.

{% apibox "Accounts.findUserByUsername" %}

{% apibox "Accounts.findUserByEmail" %}

Use the below functions to initiate password changes or resets from the server or the client.

{% apibox "Accounts.changePassword" %}

{% apibox "Accounts.forgotPassword" %}

This triggers a call to Accounts.sendResetPasswordEmail on the server. When the user visits the link in this email, the callback registered with Accounts.onResetPasswordLink will be called.

If you are using the accounts-ui package, this is handled automatically. Otherwise, it is your responsibility to prompt the user for the new password and call resetPassword.

{% apibox "Accounts.resetPassword" %}

This function accepts tokens passed into the callbacks registered with AccountsClient#onResetPasswordLink and Accounts.onEnrollmentLink.

If the user trying to reset the password has 2FA enabled, this error will be thrown:

• "Changed password, but user not logged in because 2FA is enabled [2fa-enabled]": No longer signing in the user automatically if the user has 2FA enabled.

{% apibox "Accounts.setPasswordAsync" %}

{% apibox "Accounts.sendResetPasswordEmail" %}

When the user visits the link in this email, the callback registered with AccountsClient#onResetPasswordLink will be called.

To customize the contents of the email, see Accounts.emailTemplates.

{% apibox "Accounts.sendEnrollmentEmail" %}

When the user visits the link in this email, the callback registered with Accounts.onEnrollmentLink will be called.

To customize the contents of the email, see Accounts.emailTemplates.

{% apibox "Accounts.sendVerificationEmail" %}

When the user visits the link in this email, the callback registered with Accounts.onEmailVerificationLink will be called.

To customize the contents of the email, see Accounts.emailTemplates.

{% apibox "Accounts.onResetPasswordLink" %}

{% apibox "Accounts.onEnrollmentLink" %}

{% apibox "Accounts.onEmailVerificationLink" %}

{% apibox "Accounts.emailTemplates" %}

This is an Object with several fields that are used to generate text/html for the emails sent by sendResetPasswordEmail, sendEnrollmentEmail, and sendVerificationEmail.

Set the fields of the object by assigning to them:

• from: (required) A String with an RFC5322 From address. By default, the email is sent from no-reply@example.com. If you want e-mails to send correctly, this should be changed to your own domain as most e-mail providers will reject mail sent from example.com.
• siteName: The public name of your application. Defaults to the DNS name of the application (eg: awesome.meteor.com).
• headers: An Object for custom email headers as described in Email.send.
• resetPassword: An Object with the fields:
• from: A Function used to override the from address defined by the emailTemplates.from field.
• subject: A Function that takes a user object and returns a String for the subject line of a reset password email.
• text: An optional Function that takes a user object and a url, and returns the body text for a reset password email.
• html: An optional Function that takes a user object and a url, and returns the body html for a reset password email.
• enrollAccount: Same as resetPassword, but for initial password setup for new accounts.
• verifyEmail: Same as resetPassword, but for verifying the users email address.

Example:

Accounts.emailTemplates.siteName = 'AwesomeSite';
Accounts.emailTemplates.from = 'AwesomeSite Admin <accounts@example.com>';

Accounts.emailTemplates.enrollAccount.subject = (user) => {
  return `Welcome to Awesome Town, ${user.profile.name}`;
};

Accounts.emailTemplates.enrollAccount.text = (user, url) => {
  return 'You have been selected to participate in building a better future!'
    + ' To activate your account, simply click the link below:\n\n'
    + url;
};

Accounts.emailTemplates.resetPassword.from = () => {
  // Overrides the value set in `Accounts.emailTemplates.from` when resetting
  // passwords.
  return 'AwesomeSite Password Reset <no-reply@example.com>';
};
Accounts.emailTemplates.verifyEmail = {
   subject() {
      return "Activate your account now!";
   },
   text(user, url) {
      return `Hey ${user}! Verify your e-mail by following this link: ${url}`;
   }
};

Enable 2FA for this package

You can add 2FA to your login flow by using the package accounts-2fa. You can find an example showing how this would look like here.