// If a channel list contains a wildcard ("*"), replace it with all the user's accessible channels.
// Do this before calling any of the CanSee or Authorize methods below, as they interpret a
// channel named "*" as, literally, the wildcard channel that contains all documents.
func (user *User) ExpandWildCardChannel(channels []string) []string {
if ch.ContainsChannel(channels, "*") {
channels = user.Channels
if channels == nil {
channels = []string{}
}
}
return channels
}
// Returns true if the User is allowed to access any of the given channels.
// A nil User means access control is disabled, so the function will return true.
func (user *User) CanSeeAnyChannels(channels []string) bool {
if channels != nil {
for _, channel := range channels {
if user.CanSeeChannel(channel) {
return true
}
}
}
// If user has wildcard access, allow it anyway
return ch.ContainsChannel(user.Channels, "*")
}
// Returns true if the User is allowed to access the channel.
// A nil User means access control is disabled, so the function will return true.
func (user *User) CanSeeChannel(channel string) bool {
return user == nil || channel == "*" || ch.ContainsChannel(user.Channels, channel) ||
ch.ContainsChannel(user.Channels, "*")
}