NT Net Lib

Roteiro da apresentação:

• diagrama de fluxo de chamadas da API Win32

• explicação das chamadas

• apresentação da classe

Uma mini-biblioteca com as seguintes classes:

• Segurança de arquivos

• Percorrer diretório de arquivos

• Mudar entradas do Registry

File

ACL

SD

SID

Account Name Access Mask

LookupAccountName

InitializeAcl

AddAccessAllowedAce

SetSecurityDescriptorDacl

SetSecurityDescriptorOwner

InitializeSecurityDescriptor

SID

Account Name

SetFileSecurity

File Name

LookupAccountName

FileSecurity

LookupAccountName

PSID_NAME_USE peUse // address of SID-type indicatorLPDWORD cbReferencedDomainName // address of size of domain stringLPTSTR ReferencedDomainName // address of string for referenced domain LPDWORD cbSid // address of size of security identifierPSID Sid // address of security identifierLPCTSTR lpAccountName // address of string for account nameLPCTSTR lpSystemName // address of string for system name

pType \ aponta para um inteiro1000 & \ aponta para um inteiro cujo valor é 1000pDomain \ aponta para um buffer de 1000 bytes1000 &pSID \ aponta para um buffer de 1000 bytes" Administrator"" Susy"Call LookupAccountName .

InitializeAcl

DWORD dwAclRevision // revision level of access-control listDWORD nAclLength // size of access-control listPACL pAcl // address of access-control list

ACL_REVISION \ constante da API1000pACL \ aponta para um buffer de 1000 bytesCall InitializeAcl .

AddAccessAllowedAce

PSID pSid // address of security identifierDWORD AccessMask // access maskDWORD dwAceRevision // ACL revision levelPACL pAcl // address of access-control list

pSID FILE_GENERIC_READ \ constante da APIACL_REVISION \ constante da APIpACLCall AddAccessAllowedAce .

InitializeSecurityDescriptor

DWORD dwRevision // revision levelPSECURITY_DESCRIPTOR pSecurityDescriptor // address of security descriptor

SECURITY_DESCRIPTOR_REVISION \ constante da APIpSD \ aponta para um bufferCall InitializeSecurityDescriptor .

SetSecurityDescriptorOwner

BOOL fOwnerDefaulted // flag for defaultPSID psidOwner, // address of SID for ownerPSECURITY_DESCRIPTOR psd, // address of security descriptor

0 \ defaultpSID \ new ownerpSDCall SetSecurityDescriptorOwner .

SetSecurityDescriptorDacl

BOOL fDaclDefaulted // flag for default discretionary ACLPACL pAcl, // address of discretionary ACLBOOL fDaclPresent, // flag for presence of discretionary ACLPSECURITY_DESCRIPTOR psd, // address of security descriptor

0 \ defaultpACL1 \ presentpSDCall SetSecurityDescriptorDacl .

SetFileSecurity

PSECURITY_DESCRIPTOR psd // address of security descriptorSECURITY_INFORMATION si // type of information to setLPCTSTR lpszFile // address of string for filename

pSDDACL_SECURITY_INFORMATION OWNER_SECURITY_INFORMATION or" arquivo.txt" Call SetFileSecurity .

específico para arquivos:FILE_READ_DATAFILE_WRITE_DATAFILE_APPEND_DATAFILE_EXECUTE

específico para diretórios:FILE_LIST_DIRECTORYFILE_ADD_FILEFILE_ADD_SUBDIRECTORYFILE_TRAVERSEFILE_DELETE_CHILD

Access Mask

específico para ambos:FILE_READ_EAFILE_WRITE_EAFILE_READ_ATTRIBUTESFILE_WRITE_ATTRIBUTES

genérico:GENERIC_ALLGENERIC_EXECUTEGENERIC_READGENERIC_WRITE

geral:DELETE READ_CONTROL WRITE_DAC WRITE_OWNER SYNCHRONIZEACCESS_SYSTEM_SECURITY

Class FileSecurityAccountName Owner

AccountName Read

AccountName Change

FileName Set

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FileSecurity sysFile" Administrator" Owner: sysFile" Users" Read: sysFile" gaga.txt" Set: sysFile

Handle

Key Name

Value Name

RegOpenKeyEx

ValueHandle

Computer Name

RegConnectRegistry

RegSetValueEx

Registry EntryRegCloseKey

Registry

RegConnectRegistry

PHKEY phkResult // address of buffer for remote registry handle HKEY hKey, // predefined registry handle LPTSTR lpszComputerName, // address of name of remote computer

pConnectHandle \ aponta para um inteiroHKEY_LOCAL_MACHINE \ constante da API" SUSY"Call RegConnectRegistry .

RegOpenKeyEx

PHKEY phkResult // address of handle of open key REGSAM samDesired, // security access mask DWORD dwReserved, // reserved LPCTSTR lpszSubKey, // address of name of subkey to open HKEY hKey, // handle of open key

pKeyHandle \ aponta para um inteiroKEY_WRITE \ constante da API0 \ reservado" System\CurrentControlSet\Services\Browser"ConnectHandle \ o valor mesmoCall RegOpenKeyEx .

RegSetValueEx

DWORD cbData // size of value data CONST BYTE * lpData, // address of value data DWORD dwType, // flag for value type DWORD Reserved, // reserved LPCTSTR lpValueName, // address of value to set HKEY hKey, // handle of key to set value for

4 \ 4 bytes de dados2 & \ aponta para um inteiro cujo valor é 2REG_DWORD \ tipo é dword - constante da API0 \ reservado" Start"KeyHandle \ o valor mesmoCall RegSetValueEx .

RegCloseKey

HKEY hKey // handle of key to close

KeyHandle \ o valor mesmoCall RegCloseKey .

Class RegistryClientNumber Connect

KeyName ValueName IntegerValue SetDWORD

KeyName ValueName StringValue SetSZ

KeyName ValueName StringValue SetESZ

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Registry remoto23 Connect: remoto" System\CurrentControlSet\Services\Browser” " Start" 2 SetDWORD: remotoDisconnect: remoto

Disconnect

FindNextFile

Handle

*.*

FindFirstFile

WIN32_FIND_DATA GetLastError

FindClose

SetCurrentDirectoryFILE_ATTRIBUTE_DIRECTORY

ERROR_NO_MORE_FILES

FALSETRUE

Browse

FindFirstFile

LPWIN32_FIND_DATA lpFindFileData // address of returned information LPCTSTR lpFileName, // address of name of file to search for

pFIND_DATA \ aponta para um buffer" *.*"Call FindFirstFile to hFindFile

FindNextFile

LPWIN32_FIND_DATA lpFindFileData // address of structure for data on found file HANDLE hFindFile, // handle of search

pFIND_DATA \ aponta para um bufferhFindFileCall FindNextFile .

typedef struct _WIN32_FIND_DATA { DWORD dwFileAttributes; FILETIME ftCreationTime; FILETIME ftLastAccessTime; FILETIME ftLastWriteTime; DWORD nFileSizeHigh; DWORD nFileSizeLow; DWORD dwReserved0; DWORD dwReserved1; TCHAR cFileName[ MAX_PATH ]; TCHAR cAlternateFileName[ 14 ]; } WIN32_FIND_DATA;

WIN32_FIND_DATA

dwFileAttributes

FILE_ATTRIBUTE_ARCHIVEFILE_ATTRIBUTE_COMPRESSEDFILE_ATTRIBUTE_DIRECTORYFILE_ATTRIBUTE_HIDDENFILE_ATTRIBUTE_NORMALFILE_ATTRIBUTE_READONLYFILE_ATTRIBUTE_SYSTEMFILE_ATTRIBUTE_TEMPORARY

FindClose

HANDLE hFindFile, // handle of search

hFindFileCall FindClose .

SetCurrentDirectory

LPCTSTR lpszCurDir // address of name of new current directory

" Tese"Call SetCurrentDirectory .

GetLastError

Call GetLastError .

Class DirBrowsepAvoidList Avoid

Show

pFunction ProcessFiles

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DirBrowse List: PrintFileName CR Show: List ; \ definir função' PrintFileName ProcessFiles: List \ executar função para cada arquivo