Cstrike: Implement CS_OnBuy forward.

public/memtools/MemoryUtils.cpp

@@ -29,6 +29,7 @@
 
 #include "MemoryUtils.h"
 #include <string.h>
+#include <stdio.h>
 
 #if defined(__linux__)
 	#include <fcntl.h>
@@ -63,8 +64,6 @@
 	#endif // MAC_OS_X_VERSION_10_6
 #endif // __APPLE__
 
-
-
 MemoryUtils g_MemUtils;
 
 MemoryUtils::MemoryUtils()
@@ -103,6 +102,19 @@ MemoryUtils::~MemoryUtils()
 #endif
 }
 
+void *MemoryUtils::DecodeAndFindPattern(const void *libPtr, const char *pattern)
+{
+	unsigned char real_sig[511];
+	size_t real_bytes = DecodeHexString(real_sig, sizeof(real_sig), pattern);
+
+	if (real_bytes >= 1)
+	{
+		return FindPattern(libPtr, (char*)real_sig, real_bytes);
+	}
+
+	return NULL;
+}
+
 void *MemoryUtils::FindPattern(const void *libPtr, const char *pattern, size_t len)
 {
 	DynLibInfo lib;
@@ -655,3 +667,39 @@ bool MemoryUtils::GetLibraryOfAddress(const void *libPtr, char *buffer, size_t m
 	return true;
 }
 
+size_t MemoryUtils::DecodeHexString(unsigned char *buffer, size_t maxlength, const char *hexstr)
+{
+	size_t written = 0;
+	size_t length = strlen(hexstr);
+
+	for (size_t i = 0; i < length; i++)
+	{
+		if (written >= maxlength)
+			break;
+
+		buffer[written++] = hexstr[i];
+		if (hexstr[i] == '\\' && hexstr[i + 1] == 'x')
+		{
+			if (i + 3 >= length)
+				continue;
+
+			/* Get the hex part. */
+			char s_byte[3];
+			int r_byte;
+			s_byte[0] = hexstr[i + 2];
+			s_byte[1] = hexstr[i + 3];
+			s_byte[2] = '\0';
+
+			/* Read it as an integer */
+			sscanf(s_byte, "%x", &r_byte);
+
+			/* Save the value */
+			buffer[written - 1] = r_byte;
+
+			/* Adjust index */
+			i += 3;
+		}
+	}
+
+	return written;
+}