git subrepo clone git@github.com:compihu/platform-test-f4-ll.git platforms/platform-test-f4-ll
subrepo: subdir: "platforms/platform-test-f4-ll" merged: "bc41134" upstream: origin: "git@github.com:compihu/platform-test-f4-ll.git" branch: "master" commit: "bc41134" git-subrepo: version: "0.4.3" origin: "https://github.com/ingydotnet/git-subrepo" commit: "87ee373"
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platforms/platform-test-f4-ll/subhook/subhook_windows.c
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platforms/platform-test-f4-ll/subhook/subhook_windows.c
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/*
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* Copyright (c) 2012-2018 Zeex
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stddef.h>
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#include <windows.h>
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#define SUBHOOK_CODE_PROTECT_FLAGS PAGE_EXECUTE_READWRITE
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int subhook_unprotect(void *address, size_t size) {
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DWORD old_flags;
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BOOL result = VirtualProtect(address,
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size,
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SUBHOOK_CODE_PROTECT_FLAGS,
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&old_flags);
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return !result;
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}
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void *subhook_alloc_code(size_t size) {
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return VirtualAlloc(NULL,
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size,
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MEM_COMMIT | MEM_RESERVE,
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SUBHOOK_CODE_PROTECT_FLAGS);
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}
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int subhook_free_code(void *address, size_t size) {
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(void)size;
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if (address == NULL) {
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return 0;
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}
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return !VirtualFree(address, 0, MEM_RELEASE);
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}
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