Dogcows Code - chaz/thecheat/blob - SearchContext.h

   1
   2 /*
   3  * The Cheat - The legendary universal game trainer for Mac OS X.
   4  * http://www.brokenzipper.com/trac/wiki/TheCheat
   5  *
   6  * Copyright (c) 2003-2011, Charles McGarvey et al.
   7  *
   8  * Distributable under the terms and conditions of the 2-clause BSD
   9  * license; see the file COPYING for the legal text of the license.
  10  */
  11
  12
  13 #import <Cocoa/Cocoa.h>
  14 #include "ChazLog.h"
  15
  16 #import "CheaterTypes.h"
  17 #import "Searching.h"
  18 #import "VMRegion.h"
  19 #import "Variable.h"
  20
  21
  22 #define TC_BUFFER_SIZE (8192)
  23 // used when buffers are expanded; use a multiple for 4096 because
  24 // the virtual memory system uses those sizes for optimization.
  25
  26 #define TC_EPSILON (0.1)
  27 // defines the accuracy for floating point comparisons
  28
  29
  30 @interface SearchContext : NSObject
  31 {
  32         /*
  33          * So here's the big, bad, rather ugly search context class.
  34          * There is quite a bit to keep track of, as you can see.
  35          */
  36
  37         TCVariableType _variableType;
  38         TCIntegerSign _integerSign;
  39         TCSearchOperator _operator;
  40         TCSearchType _searchType;
  41
  42         // for fast access while iterating through the task loop.
  43         @public;
  44
  45         pid_t process; // the pid of the process being searched
  46         unsigned regionCount; // estimation of the # of regions used for progress reporting
  47         VMRegion lastRegion; // used to find the next region to search
  48
  49         Variable *value; // the value to compare against (TCGivenValue searches)
  50         BOOL (*compareFunc)(void const *, void const*); // comparison function
  51
  52         TCArray addresses; // array to store hit addresses
  53         TCArray values; // parallel array to store hit values
  54         TCArray regions; // array of addresses, one for each region which contains a hit
  55         TCArray perRegion; // number of variables found for each region
  56         unsigned numberOfResults; // actual number of hits so far
  57
  58         TCArray lastAddresses; // the addresses of variables to check
  59         TCArray lastValues; // the values to compare against (TCLastValue searches)
  60         TCArray lastRegions; // optimizes "again" searches
  61         TCArray lastPerRegion; // parallels lastRegions
  62
  63         void *buffer; // the working buffer for reading in memory from the other app
  64         unsigned bufferSize; // size of the working buffer
  65
  66         // pointers
  67         void *valuePtr, *lastValuePtr;
  68         TCAddress *addressPtr, *lastAddressPtr;
  69         TCAddress *lastRegionPtr;
  70         unsigned *lastPerRegionPtr;
  71
  72         int progress; // 0-100
  73 }
  74
  75 // Initialization
  76
  77 // this initializer must be used to create a context for a first-time search
  78 - (id)initWithPID:(pid_t)pid searchOperator:(TCSearchOperator)op value:(Variable *)val;
  79 // these initializers take data from the last search that was performed
  80 - (id)initWithLastContext:(SearchContext *)context searchOperator:(TCSearchOperator)op;
  81 - (id)initWithLastContext:(SearchContext *)context searchOperator:(TCSearchOperator)op value:(Variable *)val;
  82
  83 // Accessors
  84
  85 - (TCVariableType)variableType;
  86 - (TCIntegerSign)integerSign;
  87 - (TCSearchOperator)searchOperator;
  88
  89 - (BOOL (*)(void const *, void const *))compareFunction;
  90 - (int (*)(id, unsigned))iterationFunction;
  91
  92
  93 @end