typing: 'any;-;' GUID prefix not recognized by IMCore

[jordanstern]

Bug

imsg typing --chat-id <id> fails with:

typingIndicatorFailed("Chat not found for identifier: any;-;+14155551212. Make sure Messages.app has an active conversation with this contact.")

Root cause

The chat table in chat.db stores GUIDs with an any;-; prefix for some conversations:

SELECT ROWID, chat_identifier, guid, service_name FROM chat WHERE ROWID = 1;
-- 1|+14155551212|any;-;+14155551212|iMessage|

When --chat-id is used, ChatTargetResolver.resolveChatTarget resolves to a ResolvedChatTarget with GUID any;-;+14155551212. Then preferredIdentifier returns the GUID (preferred over identifier). This gets passed to TypingIndicator.lookupChat, which tries both existingChatWithGUID: and existingChatWithChatIdentifier: on IMCore's IMChatRegistry — but IMCore doesn't recognize the any;-; prefix. It expects iMessage;-; or SMS;-;.

Suggested fix

When the GUID has an any;-; prefix, rewrite it using the chat's service_name from the DB. For example:

• any;-;+14155551212 + service iMessage → iMessage;-;+14155551212
• any;-;+14155551212 + service SMS → SMS;-;+14155551212

Alternatively, TypingIndicator.lookupChat could try stripping any;-; and re-querying with iMessage;-; / SMS;-; as a fallback.

Workaround

Using --chat-identifier "iMessage;-;+14155551212" directly bypasses the GUID path but requires knowing the service type.

Version: 0.5.0 / macOS 15 (Sequoia)

[jordanstern]

Additional finding: the issue may be deeper than the any;-; GUID prefix. IMCore's IMDaemonController crashes with an NSProxy forwardInvocation: exception when accessed from a non-entitled process. The compiled imsg binary only has the com.apple.security.automation.apple-events entitlement — no IMCore-specific entitlements.

It's possible IMChatRegistry.existingChatWithGUID: / existingChatWithChatIdentifier: fail because the daemon connection never actually establishes. Third-party processes may need private Apple entitlements (or SIP disabled) for IMCore to function.

Tested on macOS 15 (Sequoia), arm64.