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| unit FilePerm;
interface
type TPermsErrorEvent = procedure(AErrorText: String) of Object;
TFileType = (ftDirectory, ftCharacterDevice, ftBlockDevice, ftRegularFile, ftFIFO, ftSymbolicLink, ftSocket, ftUnknown);
TFilePerm = class private FFileName: String; FOwner: String; FGroup: String; FFileType: TFileType; FSetUID: Boolean; FSetGID: Boolean; FSticky: Boolean; FUserRead: Boolean; FUserWrite: Boolean; FUserExecute: Boolean; FGroupRead: Boolean; FGroupWrite: Boolean; FGroupExecute: Boolean; FAllRead: Boolean; FAllWrite: Boolean; FAllExecute: Boolean;
FOnPermsError: TPermsErrorEvent;
procedure SetFileName(const Value: String); protected procedure GetFilePermsAndOwner; procedure ShowError; public constructor Create(AFileName: String);
procedure SetFilePerms; procedure SetOwner(AUser, AGroup: String);
property FileName: String read FFileName write SetFileName; property Owner: String read FOwner; property Group: String read FGroup; property FileType: TFileType read FFileType; property SetUID: Boolean read FSetUID write FSetUID; property SetGID: Boolean read FSetGID write FSetGID; property Sticky: Boolean read FSticky write FSticky; property UserRead: Boolean read FUserRead write FUserRead; property UserWrite: Boolean read FUserWrite write FUserWrite; property UserExecute: Boolean read FUserExecute write FUserExecute; property GroupRead: Boolean read FGroupRead write FGroupRead; property GroupWrite: Boolean read FGroupWrite write FGroupWrite; property GroupExecute: Boolean read FGroupExecute write FGroupExecute; property AllRead: Boolean read FAllRead write FAllRead; property AllWrite: Boolean read FAllWrite write FAllWrite; property AllExecute: Boolean read FAllExecute write FAllExecute;
property OnPermsError: TPermsErrorEvent read FOnPermsError write FOnPermsError; end;
implementation
uses QDialogs, Libc;
constructor TFilePerm.Create(AFileName: String); begin FFileName := AFileName; GetFilePermsAndOwner; end;
procedure TFilePerm.GetFilePermsAndOwner; var r: Integer; perms: Cardinal; statBuf: TStatBuf; passRec: PPasswordRecord; groupRec: PGroup; begin FOwner := ''; FGroup := ''; FFileType := ftUnknown; FSetUID := False; FSetGID := False; FSticky := False; FUserRead := False; FUserWrite := False; FUserExecute := False; FGroupRead := False; FGroupWrite := False; FGroupExecute := False; FAllRead := False; FAllWrite := False; FAllExecute := False;
r := stat(PChar(FFileName), statBuf); if r = -1 then ShowError else begin perms := statBuf.st_mode;
if S_ISDIR(statBuf.st_mode) = True then FFileType := ftDirectory else if S_ISCHR(statBuf.st_mode) = True then FFileType := ftCharacterDevice else if S_ISBLK(statBuf.st_mode) = True then FFileType := ftBlockDevice else if S_ISREG(statBuf.st_mode) = True then FFileType := ftRegularFile else if S_ISFIFO(statBuf.st_mode) = True then FFileType := ftFIFO else if S_ISLNK(statBuf.st_mode) = True then FFileType := ftSymbolicLink else if S_ISSOCK(statBuf.st_mode) = True then FFileType := ftSocket;
FSetUID := ((perms and S_ISUID) <> 0); FSetGID := ((perms and S_ISGID) <> 0); FSticky := ((perms and S_ISVTX) <> 0); FUserRead := ((perms and S_IRUSR) <> 0); FUserWrite := ((perms and S_IWUSR) <> 0); FUserExecute := ((perms and S_IXUSR) <> 0); FGroupRead := ((perms and S_IRGRP) <> 0); FGroupWrite := ((perms and S_IWGRP) <> 0); FGroupExecute := ((perms and S_IXGRP) <> 0); FAllRead := ((perms and S_IROTH) <> 0); FAllWrite := ((perms and S_IWOTH) <> 0); FAllExecute := ((perms and S_IXOTH) <> 0);
passRec := getpwuid(statBuf.st_uid); FOwner := passRec.pw_name;
groupRec := getgrgid(statBuf.st_gid); FGroup := groupRec.gr_name; end; end;
procedure TFilePerm.SetFileName(const Value: String); begin FFileName := Value; GetFilePermsAndOwner; end;
procedure TFilePerm.SetFilePerms; var r: Integer; perms: Cardinal; begin perms := 0; if FSetUID then perms := perms or S_ISUID; if FSetGID then perms := perms or S_ISGID; if FSticky then perms := perms or S_ISVTX; if FUserRead then perms := perms or S_IRUSR; if FUserWrite then perms := perms or S_IWUSR; if FUserExecute then perms := perms or S_IXUSR; if FGroupRead then perms := perms or S_IRGRP; if FGroupWrite then perms := perms or S_IWGRP; if FGroupExecute then perms := perms or S_IXGRP; if FAllRead then perms := perms or S_IROTH; if FAllWrite then perms := perms or S_IWOTH; if FAllExecute then perms := perms or S_IXOTH;
r := chmod(PChar(FFileName), perms); if r = -1 then ShowError; end;
procedure TFilePerm.SetOwner(AUser, AGroup: String); var r: Integer; passRec: PPasswordRecord; groupRec: PGroup; begin passRec := getpwnam(PChar(AUser)); groupRec := getgrnam(PChar(AGroup));
r := chown(PChar(FFileName), passRec.pw_uid, groupRec.gr_gid); if r = -1 then ShowError else begin FOwner := AUser; FGroup := AGroup; end; end;
procedure TFilePerm.ShowError; var errBuf: PChar; begin errBuf := StrError(errno); if Assigned(FOnPermsError) then FOnPermsError(String(errBuf)) else MessageDlg('SetFilePerms - Error', String(errBuf), mtError, [mbOK], 0); end;
end. |