jjgod / blog Random notes by Jjgod Jiang.

Effective code injection for Snow Leopard 64-bit apps?

In Mac, Programming on 28 August 2009 tagged 1password, 64-bit, cocoa, dyld, inject, simbl, snowleopard with 1 comment

Recently I’m looking for a way to make Safari AdBlock support Safari in 64-bit.

64-bit apps stopped loading Input Manager bundles, so it is impossible to use SIMBL in 64-bit apps either. Neither does PlugSuit (which is using mach_inject). The web plugin solution suggested by 1Password team stopped working too. Frankly, I think it’s time to start looking for a better code injection technique for 64-bit Snow Leopard apps seriously.

What still works?

1. Scripting Additions, it’s what 1Password using for all its plugins (for Safari, WebKit, Camino, NetNewsWire, etc.), basically it works for all apps that support Apple Scripts, but the problem is you’ll need to run a daemon to watch the launch of these apps, then send a custom Apple event to trigger the initialization of the code you inject.

2. Use a DYLD constructor as initialization point, then use DYLD_INSERT_LIBRARIES or techniques described in this faq to trigger the load of this bundle or dynamic library. The problem is you will need all the users to modify their environment variables, which is cumbersome.

Is there any other solution? I’ll be glad to hear.

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