func (passwordSuite) TestAgentPasswordHash(c *gc.C) {
seenValues := make(map[string]bool)
for i := 0; i < 1000; i++ {
password, err := utils.RandomPassword()
c.Assert(err, gc.IsNil)
c.Assert(seenValues[password], jc.IsFalse)
seenValues[password] = true
hashed := utils.AgentPasswordHash(password)
c.Assert(hashed, gc.Not(gc.Equals), password)
c.Assert(seenValues[hashed], jc.IsFalse)
seenValues[hashed] = true
c.Assert(len(hashed), gc.Equals, 24)
// check we're not adding base64 padding.
c.Assert(hashed, gc.Matches, base64Chars)
}
}
// PasswordValid returns whether the given password is valid
// for the given machine.
func (m *Machine) PasswordValid(password string) bool {
agentHash := utils.AgentPasswordHash(password)
if agentHash == m.doc.PasswordHash {
return true
}
// In Juju 1.16 and older we used the slower password hash for unit
// agents. So check to see if the supplied password matches the old
// path, and if so, update it to the new mechanism.
// We ignore any error in setting the password, as we'll just try again
// next time
if utils.UserPasswordHash(password, utils.CompatSalt) == m.doc.PasswordHash {
logger.Debugf("%s logged in with old password hash, changing to AgentPasswordHash",
m.Tag())
m.setPasswordHash(agentHash)
return true
}
return false
}
func (s *UserSuite) TestSetPasswordHash(c *gc.C) {
u, err := s.State.AddUser("someuser", "password")
c.Assert(err, gc.IsNil)
err = u.SetPasswordHash(utils.UserPasswordHash("foo", utils.CompatSalt), utils.CompatSalt)
c.Assert(err, gc.IsNil)
c.Assert(u.PasswordValid("foo"), jc.IsTrue)
c.Assert(u.PasswordValid("bar"), jc.IsFalse)
// User passwords should *not* use the fast PasswordHash function
hash := utils.AgentPasswordHash("foo-12345678901234567890")
c.Assert(err, gc.IsNil)
err = u.SetPasswordHash(hash, "")
c.Assert(err, gc.IsNil)
c.Assert(u.PasswordValid("foo-12345678901234567890"), jc.IsFalse)
}
// SetPassword sets the password for the machine's agent.
func (m *Machine) SetPassword(password string) error {
if len(password) < utils.MinAgentPasswordLength {
return fmt.Errorf("password is only %d bytes long, and is not a valid Agent password", len(password))
}
return m.setPasswordHash(utils.AgentPasswordHash(password))
}