Add a small stand-alone utility for managing binary patches.
Alexander Gavrilov
parent
ab90e3eefe
commit
408f0cb06e
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,308 @@
|
|||||||
|
/*
|
||||||
|
https://github.com/peterix/dfhack
|
||||||
|
Copyright (c) 2011 Petr Mrázek <peterix@gmail.com>
|
||||||
|
|
||||||
|
A thread-safe logging console with a line editor for windows.
|
||||||
|
|
||||||
|
Based on linenoise win32 port,
|
||||||
|
copyright 2010, Jon Griffiths <jon_p_griffiths at yahoo dot com>.
|
||||||
|
All rights reserved.
|
||||||
|
Based on linenoise, copyright 2010, Salvatore Sanfilippo <antirez at gmail dot com>.
|
||||||
|
The original linenoise can be found at: http://github.com/antirez/linenoise
|
||||||
|
|
||||||
|
Redistribution and use in source and binary forms, with or without
|
||||||
|
modification, are permitted provided that the following conditions are met:
|
||||||
|
|
||||||
|
* Redistributions of source code must retain the above copyright notice,
|
||||||
|
this list of conditions and the following disclaimer.
|
||||||
|
* Redistributions in binary form must reproduce the above copyright
|
||||||
|
notice, this list of conditions and the following disclaimer in the
|
||||||
|
documentation and/or other materials provided with the distribution.
|
||||||
|
* Neither the name of Redis nor the names of its contributors may be used
|
||||||
|
to endorse or promote products derived from this software without
|
||||||
|
specific prior written permission.
|
||||||
|
|
||||||
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||||
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||||
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||||
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
||||||
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||||
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||||
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||||
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||||
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||||
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||||
|
POSSIBILITY OF SUCH DAMAGE.
|
||||||
|
*/
|
||||||
|
|
||||||
|
|
||||||
|
#include <stdarg.h>
|
||||||
|
#include <errno.h>
|
||||||
|
#include <stdio.h>
|
||||||
|
#include <assert.h>
|
||||||
|
#include <iostream>
|
||||||
|
#include <fstream>
|
||||||
|
#include <istream>
|
||||||
|
#include <string>
|
||||||
|
#include <stdint.h>
|
||||||
|
|
||||||
|
#include <cstdio>
|
||||||
|
#include <cstdlib>
|
||||||
|
#include <sstream>
|
||||||
|
#include <vector>
|
||||||
|
|
||||||
|
#include <memory>
|
||||||
|
|
||||||
|
using std::cout;
|
||||||
|
using std::cerr;
|
||||||
|
using std::endl;
|
||||||
|
|
||||||
|
typedef unsigned char patch_byte;
|
||||||
|
|
||||||
|
struct BinaryPatch {
|
||||||
|
struct Byte {
|
||||||
|
unsigned offset;
|
||||||
|
patch_byte old_val, new_val;
|
||||||
|
};
|
||||||
|
enum State {
|
||||||
|
Conflict = 0,
|
||||||
|
Unapplied = 1,
|
||||||
|
Applied = 2,
|
||||||
|
Partial = 3
|
||||||
|
};
|
||||||
|
|
||||||
|
std::vector<Byte> entries;
|
||||||
|
|
||||||
|
bool loadDIF(std::string name);
|
||||||
|
State checkState(const patch_byte *ptr, size_t len);
|
||||||
|
|
||||||
|
void apply(patch_byte *ptr, size_t len, bool newv);
|
||||||
|
};
|
||||||
|
|
||||||
|
inline bool is_hex(char c)
|
||||||
|
{
|
||||||
|
return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F');
|
||||||
|
}
|
||||||
|
|
||||||
|
bool BinaryPatch::loadDIF(std::string name)
|
||||||
|
{
|
||||||
|
entries.clear();
|
||||||
|
|
||||||
|
std::ifstream infile(name);
|
||||||
|
if(infile.bad())
|
||||||
|
{
|
||||||
|
cerr << "Cannot open file: " << name << endl;
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
std::string s;
|
||||||
|
while(std::getline(infile, s))
|
||||||
|
{
|
||||||
|
// Parse lines that begin with "[0-9a-f]+:"
|
||||||
|
size_t idx = s.find(':');
|
||||||
|
if (idx == std::string::npos || idx == 0 || idx > 8)
|
||||||
|
continue;
|
||||||
|
|
||||||
|
bool ok = true;
|
||||||
|
for (size_t i = 0; i < idx; i++)
|
||||||
|
if (!is_hex(s[i]))
|
||||||
|
ok = false;
|
||||||
|
if (!ok)
|
||||||
|
continue;
|
||||||
|
|
||||||
|
unsigned off, oval, nval;
|
||||||
|
int nchar = 0;
|
||||||
|
int cnt = sscanf(s.c_str(), "%x: %x %x%n", &off, &oval, &nval, &nchar);
|
||||||
|
|
||||||
|
if (cnt < 3)
|
||||||
|
{
|
||||||
|
cerr << "Could not parse: " << s << endl;
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
for (size_t i = nchar; i < s.size(); i++)
|
||||||
|
{
|
||||||
|
if (!isspace(s[i]))
|
||||||
|
{
|
||||||
|
cerr << "Garbage at end of line: " << s << endl;
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (oval >= 256 || nval >= 256)
|
||||||
|
{
|
||||||
|
cerr << "Invalid byte values: " << s << endl;
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
Byte bv = { off, patch_byte(oval), patch_byte(nval) };
|
||||||
|
entries.push_back(bv);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (entries.empty())
|
||||||
|
{
|
||||||
|
cerr << "No lines recognized." << endl;
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
BinaryPatch::State BinaryPatch::checkState(const patch_byte *ptr, size_t len)
|
||||||
|
{
|
||||||
|
int state = 0;
|
||||||
|
|
||||||
|
for (size_t i = 0; i < entries.size(); i++)
|
||||||
|
{
|
||||||
|
Byte &bv = entries[i];
|
||||||
|
|
||||||
|
if (bv.offset >= len)
|
||||||
|
{
|
||||||
|
cerr << "Offset out of range: 0x" << std::hex << bv.offset << std::dec << endl;
|
||||||
|
return Conflict;
|
||||||
|
}
|
||||||
|
|
||||||
|
patch_byte cv = ptr[bv.offset];
|
||||||
|
if (bv.old_val == cv)
|
||||||
|
state |= Unapplied;
|
||||||
|
else if (bv.new_val == cv)
|
||||||
|
state |= Applied;
|
||||||
|
else
|
||||||
|
{
|
||||||
|
cerr << std::hex << bv.offset << ": " << bv.old_val << " " << bv.new_val
|
||||||
|
<< ", but currently " << cv << std::dec << endl;
|
||||||
|
return Conflict;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
return State(state);
|
||||||
|
}
|
||||||
|
|
||||||
|
void BinaryPatch::apply(patch_byte *ptr, size_t len, bool newv)
|
||||||
|
{
|
||||||
|
for (size_t i = 0; i < entries.size(); i++)
|
||||||
|
{
|
||||||
|
Byte &bv = entries[i];
|
||||||
|
assert (bv.offset < len);
|
||||||
|
|
||||||
|
ptr[bv.offset] = (newv ? bv.new_val : bv.old_val);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
bool load_file(std::vector<patch_byte> *pvec, std::string fname)
|
||||||
|
{
|
||||||
|
FILE *f = fopen(fname.c_str(), "rb");
|
||||||
|
if (!f)
|
||||||
|
{
|
||||||
|
cerr << "Cannot open file: " << fname << endl;
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
fseek(f, 0, SEEK_END);
|
||||||
|
pvec->resize(ftell(f));
|
||||||
|
fseek(f, 0, SEEK_SET);
|
||||||
|
size_t cnt = fread(pvec->data(), 1, pvec->size(), f);
|
||||||
|
fclose(f);
|
||||||
|
|
||||||
|
return cnt == pvec->size();
|
||||||
|
}
|
||||||
|
|
||||||
|
bool save_file(const std::vector<patch_byte> &pvec, std::string fname)
|
||||||
|
{
|
||||||
|
FILE *f = fopen(fname.c_str(), "wb");
|
||||||
|
if (!f)
|
||||||
|
{
|
||||||
|
cerr << "Cannot open file: " << fname << endl;
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
size_t cnt = fwrite(pvec.data(), 1, pvec.size(), f);
|
||||||
|
fclose(f);
|
||||||
|
|
||||||
|
return cnt == pvec.size();
|
||||||
|
}
|
||||||
|
|
||||||
|
int main (int argc, char *argv[])
|
||||||
|
{
|
||||||
|
if (argc <= 3)
|
||||||
|
{
|
||||||
|
cerr << "Usage: binpatch check|apply|remove <exe> <patch>" << endl;
|
||||||
|
return 2;
|
||||||
|
}
|
||||||
|
|
||||||
|
std::string cmd = argv[1];
|
||||||
|
|
||||||
|
if (cmd != "check" && cmd != "apply" && cmd != "remove")
|
||||||
|
{
|
||||||
|
cerr << "Invalid command: " << cmd << endl;
|
||||||
|
return 2;
|
||||||
|
}
|
||||||
|
|
||||||
|
std::string exe_file = argv[2];
|
||||||
|
std::vector<patch_byte> bindata;
|
||||||
|
if (!load_file(&bindata, exe_file))
|
||||||
|
return 2;
|
||||||
|
|
||||||
|
BinaryPatch patch;
|
||||||
|
if (!patch.loadDIF(argv[3]))
|
||||||
|
return 2;
|
||||||
|
|
||||||
|
BinaryPatch::State state = patch.checkState(bindata.data(), bindata.size());
|
||||||
|
if (state == BinaryPatch::Conflict)
|
||||||
|
return 1;
|
||||||
|
|
||||||
|
if (cmd == "check")
|
||||||
|
{
|
||||||
|
switch (state)
|
||||||
|
{
|
||||||
|
case BinaryPatch::Unapplied:
|
||||||
|
cout << "Currently not applied." << endl;
|
||||||
|
break;
|
||||||
|
case BinaryPatch::Applied:
|
||||||
|
cout << "Currently applied." << endl;
|
||||||
|
break;
|
||||||
|
case BinaryPatch::Partial:
|
||||||
|
cout << "Currently partially applied." << endl;
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
else if (cmd == "apply")
|
||||||
|
{
|
||||||
|
if (state == BinaryPatch::Applied)
|
||||||
|
{
|
||||||
|
cout << "Already applied." << endl;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
patch.apply(bindata.data(), bindata.size(), true);
|
||||||
|
}
|
||||||
|
else if (cmd == "remove")
|
||||||
|
{
|
||||||
|
if (state == BinaryPatch::Unapplied)
|
||||||
|
{
|
||||||
|
cout << "Already removed." << endl;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
patch.apply(bindata.data(), bindata.size(), false);
|
||||||
|
}
|
||||||
|
|
||||||
|
std::string bak_file = exe_file + ".bak";
|
||||||
|
remove(bak_file.c_str());
|
||||||
|
|
||||||
|
if (rename(exe_file.c_str(), bak_file.c_str()) != 0)
|
||||||
|
{
|
||||||
|
cerr << "Could not create backup." << endl;
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!save_file(bindata, exe_file))
|
||||||
|
return 1;
|
||||||
|
|
||||||
|
cout << "Patched " << patch.entries.size() << " bytes." << endl;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue