NT Net Lib
Uma mini-biblioteca com as seguintes classes:
• Segurança de arquivos
• Percorrer diretório de arquivos
• Mudar entradas do Registry
Roteiro da apresentação:
• diagrama de fluxo de chamadas da API Win32
• explicação das chamadas
• apresentação da classe
FileSecurity
Account Name Access Mask
LookupAccountName
Account Name
SID
LookupAccountName
InitializeAcl
SID
AddAccessAllowedAce
ACL
File Name
SetSecurityDescriptorOwner
SetSecurityDescriptorDacl
SetFileSecurity
InitializeSecurityDescriptor
SD
File
LookupAccountName
PSID_NAME_USE peUse
LPDWORD cbReferencedDomainName
LPTSTR ReferencedDomainName
LPDWORD cbSid
PSID Sid
LPCTSTR lpAccountName
LPCTSTR lpSystemName
pType
\ aponta para
1000 &
\ aponta para
pDomain
\ aponta para
1000 &
pSID
\ aponta para
" Administrator"
" Susy"
Call LookupAccountName .
// address of SID-type indicator
// address of size of domain string
// address of string for referenced domain
// address of size of security identifier
// address of security identifier
// address of string for account name
// address of string for system name
um inteiro
um inteiro cujo valor é 1000
um buffer de 1000 bytes
um buffer de 1000 bytes
InitializeAcl
DWORD dwAclRevision
DWORD nAclLength
PACL pAcl
ACL_REVISION
1000
pACL
Call InitializeAcl .
// revision level of access-control list
// size of access-control list
// address of access-control list
\ constante da API
\ aponta para um buffer de 1000 bytes
AddAccessAllowedAce
PSID pSid
DWORD AccessMask
DWORD dwAceRevision
PACL pAcl
// address of security identifier
// access mask
// ACL revision level
// address of access-control list
pSID
FILE_GENERIC_READ
\ constante da API
ACL_REVISION
\ constante da API
pACL
Call AddAccessAllowedAce .
InitializeSecurityDescriptor
DWORD dwRevision
PSECURITY_DESCRIPTOR pSecurityDescriptor
SECURITY_DESCRIPTOR_REVISION
pSD
Call InitializeSecurityDescriptor .
// revision level
// address of security descriptor
\ constante da API
\ aponta para um buffer
SetSecurityDescriptorOwner
BOOL fOwnerDefaulted
PSID psidOwner,
PSECURITY_DESCRIPTOR psd,
0
\ default
pSID
\ new owner
pSD
Call SetSecurityDescriptorOwner .
// flag for default
// address of SID for owner
// address of security descriptor
SetSecurityDescriptorDacl
BOOL fDaclDefaulted
PACL pAcl,
BOOL fDaclPresent,
PSECURITY_DESCRIPTOR psd,
0
\ default
pACL
1
\ present
pSD
Call SetSecurityDescriptorDacl .
// flag for default discretionary ACL
// address of discretionary ACL
// flag for presence of discretionary ACL
// address of security descriptor
SetFileSecurity
PSECURITY_DESCRIPTOR psd
SECURITY_INFORMATION si
LPCTSTR lpszFile
// address of security descriptor
// type of information to set
// address of string for filename
pSD
DACL_SECURITY_INFORMATION OWNER_SECURITY_INFORMATION or
" arquivo.txt"
Call SetFileSecurity .
Access Mask
genérico:
GENERIC_ALL
GENERIC_EXECUTE
GENERIC_READ
GENERIC_WRITE
específico para arquivos:
FILE_READ_DATA
FILE_WRITE_DATA
FILE_APPEND_DATA
FILE_EXECUTE
específico para ambos:
FILE_READ_EA
FILE_WRITE_EA
FILE_READ_ATTRIBUTES
FILE_WRITE_ATTRIBUTES
específico para diretórios:
FILE_LIST_DIRECTORY
FILE_ADD_FILE
FILE_ADD_SUBDIRECTORY
FILE_TRAVERSE
FILE_DELETE_CHILD
geral:
DELETE
READ_CONTROL
WRITE_DAC
WRITE_OWNER
SYNCHRONIZE
ACCESS_SYSTEM_SECURITY
Class FileSecurity
1.
2.
3.
AccountName Owner
AccountName Read
AccountName Change
FileName Set
FileSecurity sysFile
" Administrator" Owner: sysFile
" Users" Read: sysFile
" gaga.txt" Set: sysFile
Registry
Computer Name
Key Name
RegConnectRegistry
Value Name
Handle
Value
RegOpenKeyEx
Handle
RegSetValueEx
RegCloseKey
Registry Entry
RegConnectRegistry
PHKEY phkResult
HKEY hKey,
LPTSTR lpszComputerName,
pConnectHandle
HKEY_LOCAL_MACHINE
" SUSY"
Call RegConnectRegistry .
// address of buffer for remote registry handle
// predefined registry handle
// address of name of remote computer
\ aponta para um inteiro
\ constante da API
RegOpenKeyEx
PHKEY phkResult
REGSAM samDesired,
DWORD dwReserved,
LPCTSTR lpszSubKey,
HKEY hKey,
// address of handle of open key
// security access mask
// reserved
// address of name of subkey to open
// handle of open key
pKeyHandle
\ aponta para um inteiro
KEY_WRITE
\ constante da API
0
\ reservado
" System\CurrentControlSet\Services\Browser"
ConnectHandle
\ o valor mesmo
Call RegOpenKeyEx .
RegSetValueEx
DWORD cbData
CONST BYTE * lpData,
DWORD dwType,
DWORD Reserved,
LPCTSTR lpValueName,
HKEY hKey,
4
2&
REG_DWORD
0
" Start"
KeyHandle
Call RegSetValueEx .
// size of value data
// address of value data
// flag for value type
// reserved
// address of value to set
// handle of key to set value for
\
\
\
\
4 bytes de dados
aponta para um inteiro cujo valor é 2
tipo é dword - constante da API
reservado
\ o valor mesmo
RegCloseKey
HKEY hKey
KeyHandle
Call RegCloseKey .
// handle of key to close
\ o valor mesmo
Class Registry
1.
ClientNumber Connect
KeyName ValueName IntegerValue SetDWORD
2.
KeyName ValueName StringValue SetSZ
KeyName ValueName StringValue SetESZ
3.
Disconnect
Registry remoto
23 Connect: remoto
" System\CurrentControlSet\Services\Browser” " Start" 2 SetDWORD: remoto
Disconnect: remoto
Browse
*.*
FindFirstFile
Handle
FindClose
FindNextFile
TRUE
ERROR_NO_
MORE_FILES
FALSE
WIN32_FIND_DATA
GetLastError
FILE_ATTRIBUTE_DIRECTORY
SetCurrentDirectory
FindFirstFile
LPWIN32_FIND_DATA lpFindFileData
LPCTSTR lpFileName,
pFIND_DATA
" *.*"
Call FindFirstFile to hFindFile
// address of returned information
// address of name of file to search for
\ aponta para um buffer
FindNextFile
LPWIN32_FIND_DATA lpFindFileData
HANDLE hFindFile,
pFIND_DATA
hFindFile
Call FindNextFile .
// address of structure for data on found file
// handle of search
\ aponta para um buffer
WIN32_FIND_DATA
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;
dwFileAttributes
FILE_ATTRIBUTE_ARCHIVE
FILE_ATTRIBUTE_COMPRESSED
FILE_ATTRIBUTE_DIRECTORY
FILE_ATTRIBUTE_HIDDEN
FILE_ATTRIBUTE_NORMAL
FILE_ATTRIBUTE_READONLY
FILE_ATTRIBUTE_SYSTEM
FILE_ATTRIBUTE_TEMPORARY
FindClose
HANDLE hFindFile,
hFindFile
Call FindClose .
// handle of search
SetCurrentDirectory
LPCTSTR lpszCurDir
" Tese"
Call SetCurrentDirectory .
// address of name of new current directory
GetLastError
Call GetLastError .
Class DirBrowse
1.
2.
pAvoidList Avoid
Show
pFunction ProcessFiles
DirBrowse List
: PrintFileName CR Show: List ; \ definir função
' PrintFileName ProcessFiles: List \ executar função para cada arquivo