X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Fthecheat;a=blobdiff_plain;f=SearchContext.h;fp=SearchContext.h;h=26bd2c7f8cb90963d167bfea3b9b189aca4ce599;hp=0000000000000000000000000000000000000000;hb=d27548f80fe411fda2ee69c74a24eab4292267e9;hpb=e8d51183acdd2410a38dcf8f0efbf7c30cd6c581

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+//
+//  SearchContext.h
+//  The Cheat
+//
+//  Created by Chaz McGarvey on 12/4/04.
+//  Copyright 2004 Chaz McGarvey. All rights reserved.
+//
+
+#import <Cocoa/Cocoa.h>
+#include "ChazLog.h"
+
+#import "CheaterTypes.h"
+#import "Searching.h"
+#import "VMRegion.h"
+#import "Variable.h"
+
+
+#define TC_BUFFER_SIZE (8192)
+// used when buffers are expanded; use a multiple for 4096 because
+// the virtual memory system uses those sizes for optimization.
+
+#define TC_EPSILON (0.1)
+// defines the accuracy for floating point comparisons
+
+
+@interface SearchContext : NSObject
+{
+	/*
+	 * So here's the big, bad, rather ugly search context class.
+	 * There is quite a bit to keep track of, as you can see.
+	 */
+	
+	TCVariableType _variableType;
+	TCIntegerSign _integerSign;
+	TCSearchOperator _operator;
+	TCSearchType _searchType;
+	
+	// for fast access while iterating through the task loop.
+	@public;
+	
+	pid_t process; // the pid of the process being searched
+	unsigned regionCount; // estimation of the # of regions used for progress reporting
+	VMRegion lastRegion; // used to find the next region to search
+	
+	Variable *value; // the value to compare against (TCGivenValue searches)
+	BOOL (*compareFunc)(void const *, void const*); // comparison function
+	
+	TCArray addresses; // array to store hit addresses
+	TCArray values; // parallel array to store hit values
+	TCArray regions; // array of addresses, one for each region which contains a hit
+	TCArray perRegion; // number of variables found for each region
+	unsigned numberOfResults; // actual number of hits so far
+	
+	TCArray lastAddresses; // the addresses of variables to check
+	TCArray lastValues; // the values to compare against (TCLastValue searches)
+	TCArray lastRegions; // optimizes "again" searches
+	TCArray lastPerRegion; // parallels lastRegions
+	
+	void *buffer; // the working buffer for reading in memory from the other app
+	unsigned bufferSize; // size of the working buffer
+	
+	// pointers
+	void *valuePtr, *lastValuePtr;
+	TCAddress *addressPtr, *lastAddressPtr;
+	TCAddress *lastRegionPtr;
+	unsigned *lastPerRegionPtr;
+	
+	int progress; // 0-100
+}
+
+// Initialization
+
+// this initializer must be used to create a context for a first-time search
+- (id)initWithPID:(pid_t)pid searchOperator:(TCSearchOperator)op value:(Variable *)val;
+// these initializers take data from the last search that was performed
+- (id)initWithLastContext:(SearchContext *)context searchOperator:(TCSearchOperator)op;
+- (id)initWithLastContext:(SearchContext *)context searchOperator:(TCSearchOperator)op value:(Variable *)val;
+
+// Accessors
+
+- (TCVariableType)variableType;
+- (TCIntegerSign)integerSign;
+- (TCSearchOperator)searchOperator;
+
+- (BOOL (*)(void const *, void const *))compareFunction;
+- (int (*)(id, unsigned))iterationFunction;
+
+
+@end