392 lines
9.8 KiB
C++
392 lines
9.8 KiB
C++
/*
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www.sourceforge.net/projects/dfhack
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Copyright (c) 2009 Petr Mrázek (peterix), Kenneth Ferland (Impaler[WrG]), dorf
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any
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damages arising from the use of this software.
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Permission is granted to anyone to use this software for any
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purpose, including commercial applications, and to alter it and
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redistribute it freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must
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not claim that you wrote the original software. If you use this
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software in a product, an acknowledgment in the product documentation
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would be appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and
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must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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*/
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#include "DFCommonInternal.h"
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using namespace DFHack;
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class NormalProcess::Private
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{
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public:
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Private()
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{
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my_datamodel = NULL;
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my_descriptor = NULL;
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my_handle = NULL;
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my_main_thread = NULL;
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my_window = NULL;
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my_pid = 0;
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attached = false;
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suspended = false;
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};
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~Private(){};
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DataModel* my_datamodel;
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memory_info * my_descriptor;
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DFWindow * my_window;
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ProcessHandle my_handle;
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HANDLE my_main_thread;
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uint32_t my_pid;
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string memFile;
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bool attached;
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bool suspended;
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bool identified;
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};
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NormalProcess::NormalProcess(uint32_t pid, vector <memory_info> & known_versions)
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: d(new Private())
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{
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HMODULE hmod = NULL;
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DWORD junk;
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HANDLE hProcess;
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bool found = false;
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IMAGE_NT_HEADERS32 pe_header;
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IMAGE_SECTION_HEADER sections[16];
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d->identified = false;
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// open process
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hProcess = OpenProcess( PROCESS_ALL_ACCESS, FALSE, pid );
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if (NULL == hProcess)
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return;
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// try getting the first module of the process
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if(EnumProcessModules(hProcess, &hmod, 1 * sizeof(HMODULE), &junk) == 0)
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{
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CloseHandle(hProcess);
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cout << "EnumProcessModules fail'd" << endl;
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return; //if enumprocessModules fails, give up
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}
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// got base ;)
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uint32_t base = (uint32_t)hmod;
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// temporarily assign this to allow some checks
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d->my_handle = hProcess;
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// read from this process
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uint32_t pe_offset = readDWord(base+0x3C);
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read(base + pe_offset , sizeof(pe_header), (uint8_t *)&pe_header);
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read(base + pe_offset+ sizeof(pe_header), sizeof(sections) , (uint8_t *)§ions );
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d->my_handle = 0;
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// see if there's a version entry that matches this process
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vector<memory_info>::iterator it;
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for ( it=known_versions.begin() ; it < known_versions.end(); it++ )
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{
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// filter by OS
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if(memory_info::OS_WINDOWS != (*it).getOS())
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continue;
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// filter by timestamp
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uint32_t pe_timestamp = (*it).getHexValue("pe_timestamp");
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if (pe_timestamp != pe_header.FileHeader.TimeDateStamp)
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continue;
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// all went well
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{
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printf("Match found! Using version %s.\n", (*it).getVersion().c_str());
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d->identified = true;
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// give the process a data model and memory layout fixed for the base of first module
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memory_info *m = new memory_info(*it);
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m->RebaseAll(base);
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// keep track of created memory_info object so we can destroy it later
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d->my_descriptor = m;
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// process is responsible for destroying its data model
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d->my_datamodel = new DMWindows40d();
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d->my_pid = pid;
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d->my_handle = hProcess;
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d->identified = true;
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// TODO: detect errors in thread enumeration
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vector<uint32_t> threads;
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getThreadIDs( threads );
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d->my_main_thread = OpenThread(THREAD_ALL_ACCESS, FALSE, (DWORD) threads[0]);
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found = true;
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break; // break the iterator loop
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}
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}
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// close handle of processes that aren't DF
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if(!found)
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{
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CloseHandle(hProcess);
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}
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else
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{
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d->my_window = new DFWindow(this);
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}
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}
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/*
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*/
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NormalProcess::~NormalProcess()
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{
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if(d->attached)
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{
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detach();
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}
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// destroy data model. this is assigned by processmanager
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delete d->my_datamodel;
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delete d->my_descriptor;
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if(d->my_handle != NULL)
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{
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CloseHandle(d->my_handle);
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}
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if(d->my_main_thread != NULL)
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{
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CloseHandle(d->my_main_thread);
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}
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if(d->my_window)
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{
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delete d->my_window;
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}
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delete d;
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}
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DataModel *NormalProcess::getDataModel()
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{
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return d->my_datamodel;
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}
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memory_info * NormalProcess::getDescriptor()
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{
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return d->my_descriptor;
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}
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DFWindow * NormalProcess::getWindow()
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{
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return d->my_window;
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}
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int NormalProcess::getPID()
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{
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return d->my_pid;
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}
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bool NormalProcess::isSuspended()
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{
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return d->suspended;
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}
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bool NormalProcess::isAttached()
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{
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return d->attached;
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}
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bool NormalProcess::isIdentified()
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{
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return d->identified;
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}
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bool NormalProcess::asyncSuspend()
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{
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return suspend();
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}
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bool NormalProcess::suspend()
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{
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if(!d->attached)
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return false;
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if(d->suspended)
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{
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return true;
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}
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SuspendThread(d->my_main_thread);
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d->suspended = true;
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return true;
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}
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bool NormalProcess::forceresume()
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{
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if(!d->attached)
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return false;
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while (ResumeThread(d->my_main_thread) > 1);
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d->suspended = false;
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return true;
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}
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bool NormalProcess::resume()
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{
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if(!d->attached)
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return false;
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if(!d->suspended)
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{
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return true;
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}
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ResumeThread(d->my_main_thread);
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d->suspended = false;
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return true;
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}
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bool NormalProcess::attach()
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{
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if(g_pProcess != NULL)
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{
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return false;
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}
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d->attached = true;
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g_pProcess = this;
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suspend();
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return true;
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}
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bool NormalProcess::detach()
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{
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if(!d->attached)
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{
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return false;
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}
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resume();
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d->attached = false;
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g_pProcess = NULL;
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return true;
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}
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bool NormalProcess::getThreadIDs(vector<uint32_t> & threads )
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{
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HANDLE AllThreads = INVALID_HANDLE_VALUE;
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THREADENTRY32 te32;
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AllThreads = CreateToolhelp32Snapshot( TH32CS_SNAPTHREAD, 0 );
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if( AllThreads == INVALID_HANDLE_VALUE )
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{
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return false;
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}
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te32.dwSize = sizeof(THREADENTRY32 );
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if( !Thread32First( AllThreads, &te32 ) )
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{
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CloseHandle( AllThreads );
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return false;
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}
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do
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{
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if( te32.th32OwnerProcessID == d->my_pid )
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{
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threads.push_back(te32.th32ThreadID);
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}
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} while( Thread32Next(AllThreads, &te32 ) );
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CloseHandle( AllThreads );
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return true;
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}
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//FIXME: use VirtualQuery to probe for memory ranges, cross-reference with base-corrected PE segment entries
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void NormalProcess::getMemRanges( vector<t_memrange> & ranges )
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{
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// code here is taken from hexsearch by Silas Dunmore.
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// As this IMHO isn't a 'sunstantial portion' of anything, I'm not including the MIT license here
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// I'm faking this, because there's no way I'm using VirtualQuery
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t_memrange temp;
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uint32_t base = d->my_descriptor->getBase();
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temp.start = base + 0x1000; // more fakery.
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temp.end = base + readDWord(base+readDWord(base+0x3C)+0x50)-1; // yay for magic.
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temp.read = 1;
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temp.write = 1;
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temp.execute = 0; // fake
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strcpy(temp.name,"pants");// that's right. I'm calling it pants. Windows can go to HELL
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ranges.push_back(temp);
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}
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uint8_t NormalProcess::readByte (const uint32_t offset)
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{
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uint8_t result;
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ReadProcessMemory(d->my_handle, (int*) offset, &result, sizeof(uint8_t), NULL);
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return result;
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}
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void NormalProcess::readByte (const uint32_t offset,uint8_t &result)
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{
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ReadProcessMemory(d->my_handle, (int*) offset, &result, sizeof(uint8_t), NULL);
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}
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uint16_t NormalProcess::readWord (const uint32_t offset)
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{
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uint16_t result;
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ReadProcessMemory(d->my_handle, (int*) offset, &result, sizeof(uint16_t), NULL);
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return result;
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}
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void NormalProcess::readWord (const uint32_t offset, uint16_t &result)
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{
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ReadProcessMemory(d->my_handle, (int*) offset, &result, sizeof(uint16_t), NULL);
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}
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uint32_t NormalProcess::readDWord (const uint32_t offset)
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{
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uint32_t result;
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ReadProcessMemory(d->my_handle, (int*) offset, &result, sizeof(uint32_t), NULL);
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return result;
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}
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void NormalProcess::readDWord (const uint32_t offset, uint32_t &result)
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{
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ReadProcessMemory(d->my_handle, (int*) offset, &result, sizeof(uint32_t), NULL);
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}
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void NormalProcess::read (const uint32_t offset, uint32_t size, uint8_t *target)
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{
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ReadProcessMemory(d->my_handle, (int*) offset, target, size, NULL);
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}
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// WRITING
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void NormalProcess::writeDWord (const uint32_t offset, uint32_t data)
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{
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WriteProcessMemory(d->my_handle, (int*) offset, &data, sizeof(uint32_t), NULL);
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}
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// using these is expensive.
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void NormalProcess::writeWord (uint32_t offset, uint16_t data)
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{
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WriteProcessMemory(d->my_handle, (int*) offset, &data, sizeof(uint16_t), NULL);
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}
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void NormalProcess::writeByte (uint32_t offset, uint8_t data)
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{
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WriteProcessMemory(d->my_handle, (int*) offset, &data, sizeof(uint8_t), NULL);
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}
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void NormalProcess::write (uint32_t offset, uint32_t size, uint8_t *source)
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{
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WriteProcessMemory(d->my_handle, (int*) offset, source, size, NULL);
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}
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///FIXME: reduce use of temporary objects
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const string NormalProcess::readCString (const uint32_t offset)
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{
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string temp;
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char temp_c[256];
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DWORD read;
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ReadProcessMemory(d->my_handle, (int *) offset, temp_c, 255, &read);
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temp_c[read+1] = 0;
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temp = temp_c;
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return temp;
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}
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