实现正则匹配,匹配模式

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模式匹配问题

BOOLEAN IsPatternMatch(PUNICODE_STRING Expression, PUNICODE_STRING Name, BOOLEAN IgnoreCase){return FsRtlIsNameInExpression(    Expression,    Name,    IgnoreCase,//如果这里设置为TRUE,那么Expression必须是大写的    NULL    ); }//L"C:\\WINDOWS\\SYSTEM32\\*\\*.SYS"//L"c:\\Windows\\system32\\122222\\2.sys"

#include <Ntifs.h>#include <ntddk.h>#include <windef.h>VOID DriverUnload(PDRIVER_OBJECT pDriverObject){DbgPrint("Goodbye!\n");}BOOLEAN IsPatternMatch(PUNICODE_STRING Expression, PUNICODE_STRING Name, BOOLEAN IgnoreCase){return FsRtlIsNameInExpression(    Expression,    Name,    IgnoreCase,//如果这里设置为TRUE,那么Expression必须是大写的    NULL    ); }BOOL PatternMatch(WCHAR * pat, WCHAR * str){   register WCHAR * s;   register WCHAR * p;   BOOL star = FALSE;loopStart:   for (s = str, p = pat; *s; ++s, ++p) {      switch (*p) {         case L'?':            if (*s == L'.') goto starCheck;            break;         case L'*':            star = TRUE;            str = s, pat = p;            if (!*++pat) return TRUE;            goto loopStart;         default:            //if (Lower(*s) != Lower(*p))               goto starCheck;            break;      }    }    if (*p == L'*') ++p;   return (!*p);starCheck:   if (!star) return FALSE;   str++;   goto loopStart;}BOOL PatternNMatch(WCHAR * pat, WCHAR * str, DWORD count){   register WCHAR * s;   register WCHAR * p;   BOOL star = FALSE;   DWORD dwCount = count;loopStart:   for (s = str, p = pat; dwCount>0; --dwCount, ++s, ++p) {      switch (*p) {         case L'?':            if (*s == L'.') goto starCheck;            break;         case L'*':            star = TRUE;            str = s, pat = p;            if (!*++pat) return TRUE;            goto loopStart;         default:            //if (Lower(*s) != Lower(*p))               goto starCheck;            break;      }    }    if (*p == L'*') ++p;   return (!*p);starCheck:   if (!star) return FALSE;   str++;   dwCount--;   goto loopStart;}NTSTATUS DriverEntry(PDRIVER_OBJECT pDriverObject, PUNICODE_STRING pRegPath){UNICODE_STRING uExpression = {0};UNICODE_STRING uName   = {0};RtlInitUnicodeString(&uExpression, L"C:\\WINDOWS\\SYSTEM32\\*.SYS");RtlInitUnicodeString(&uName, L"c:\\Windows\\system32\\122222\\2.sys");if (IsPatternMatch(&uExpression, &uName, TRUE)){DbgPrint("Matched\n");}else{DbgPrint("Not Matched\n");}pDriverObject->DriverUnload = DriverUnload;return STATUS_SUCCESS;}

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