identity

func BuildCanonicalID ¶

func BuildCanonicalID(platform, platformID string) string

BuildCanonicalID constructs a canonical "platform:id" identifier. Both platform and platformID are lowercased and trimmed.

func MatchAllowed ¶

func MatchAllowed(sender bus.SenderInfo, allowed string) bool

MatchAllowed checks whether the given sender matches a single allow-list entry:

• "123456" → matches sender.PlatformID
• "@alice" → matches sender.Username (any case on Telegram and Discord)
• "telegram:123456" → exact match on sender.CanonicalID
• "telegram:@alice" → matches sender.Username on that platform
• "@alice:matrix.org" → matches the Matrix user ID

Only a known platform name (or the sender's own platform) before the first colon makes an entry canonical. On DeltaChat, whose senders are email addresses, "@name" matches only a full address, so "@alice" never admits alice@ at some other domain.

func ParseCanonicalID ¶

func ParseCanonicalID(canonical string) (platform, id string, ok bool)

ParseCanonicalID splits a canonical ID ("platform:id") into its parts. Returns ok=false if the input does not contain a colon separator.