Here is a reimplementation for those that don't want to pay the 10k http://www.codeproject.com/Articles/44326/MinHook-The-Minimalistic-x86-x64-API-Hooking-Libra
On Fri, Feb 28, 2014 at 7:11 AM, Ged Murphy <gedmurphy.mailli...@gmail.com>wrote: > Ahh, the detours trampoline. Hand over £10k to Microsoft and you can have > their source ;) > > > > > > *From:* ros-dev-boun...@reactos.org [mailto:ros-dev-boun...@reactos.org] *On > Behalf Of *Hermès BÉLUSCA - MAÏTO > *Sent:* 28 February 2014 14:29 > *To:* 'ReactOS Development List' > *Subject:* Re: [ros-dev] About hotpatchable dlls on ReactOS > > > > Not exactly. I'm referring to the fact that, starting with Windows XP sp1 > (or 2), and in windows 2k3, usual dlls like kernel32, user32 and others > (and maybe some exes) have, in the prologue of their exported APIs, two > bytes that allows for detouring the API (that allows for in-memory > hotpatch). Maybe that it's used when patching a core dll, when you cannot > modify its file directly without any reboot (otherwise you would need to > reboot for the effects to take change). Here it also appears that some > games and some applications try to patch in-memory some of those Apis, and > if they cannot, they fail. > > > > Searching on wine commits / mailing lists for "hotpatch" and > "DECLSPEC_HOTPATCH" (altough that it's something which doesn't exist in the > PSDK) may give more precision on that subject. > > > > Hermes > > > > *De :* ros-dev-boun...@reactos.org > [mailto:ros-dev-boun...@reactos.org<ros-dev-boun...@reactos.org>] > *De la part de* Ged Murphy > *Envoyé :* vendredi 28 février 2014 14:55 > *À :* 'ReactOS Development List' > *Objet :* Re: [ros-dev] About hotpatchable dlls on ReactOS > > > > Are you referring to .msp's ? > > > > *From:* ros-dev-boun...@reactos.org > [mailto:ros-dev-boun...@reactos.org<ros-dev-boun...@reactos.org>] > *On Behalf Of *Hermès BÉLUSCA - MAÏTO > *Sent:* 28 February 2014 13:53 > *To:* ReactOS Development List > *Subject:* [ros-dev] About hotpatchable dlls on ReactOS > > > > Hi guys ! > > > > It seems to appear that some games need standard APIs hotpatchable, in the > sense of MS: few extra bytes present in the prologue of the functions that > allow somebody to detour the API. I knew that this feature was useful for > windows updates, but what I didn't know is that there are other programs > that use it: see this answer from James on the "Epic Win!" forum thread: > http://www.reactos.org/forum/viewtopic.php?f=2&t=10972&p=106823#p106814 , > and the following post is something that I've found about this subject, and > the fact that Wine already have done something about that. > > > > So my question: should we support/create hotpatchable images (of the > standard dlls and maybe ?? exes) in ReactOS ? Is it already done ? If not, > what needs to be added ? It seems that MSVC and GCC handle that a bit > differently. > > > > Cheers, > > Hermès BÉLUSCA - MAÏTO > > _______________________________________________ > Ros-dev mailing list > Ros-dev@reactos.org > http://www.reactos.org/mailman/listinfo/ros-dev > -- Steven Edwards "There is one thing stronger than all the armies in the world, and that is an idea whose time has come." - Victor Hugo
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