About Users, Classes and Campaigns

Users, campaigns and classes are the central entities in ohmage that control access to the system.

The proverbial user is the person who can authenticate with the system and perform certain actions.

The actions a user can perform are defined by

1. bit attributes on the user table
2. the user's class role
3. the user's **campaign role.

The admin role is the only role in ohmage that is allowed to create other users in the system. ohmage ships with a default admin account.

When a user is created, the following properties must be set:

• username -- must be between 4 and 25 characters and must contain at least one alphanumeric character; it may also include '.', '_', '@', '+', '-'
• password -- must be between 8 and 16 characters; must contain at least one lowercase character; must contain at least one uppercase character; must contain at least one digit; and must contain at least one of the following: ',', '.', '<', '>', '[', ']', '!', '@', '#', '$', '%', '^', '&', '*', '+', '-', '{', '}', '|', ':'.

When a user is created, the following properties may be set:

• enabled -- the default is true; if this is set to false, the user will not be able to login
• can create campaigns -- the default is false
• make admin -- the default is false
• require password change on first login -- the default is true