package File::CheckTree; require 5.000; require Exporter; =head1 NAME validate - run many filetest checks on a tree =head1 SYNOPSIS use File::CheckTree; $warnings += validate( q{ /vmunix -e || die /boot -e || die /bin cd csh -ex csh !-ug sh -ex sh !-ug /usr -d || warn "What happened to $file?\n" }); =head1 DESCRIPTION The validate() routine takes a single multiline string consisting of lines containing a filename plus a file test to try on it. (The file test may also be a "cd", causing subsequent relative filenames to be interpreted relative to that directory.) After the file test you may put C<|| die> to make it a fatal error if the file test fails. The default is C<|| warn>. The file test may optionally have a "!' prepended to test for the opposite condition. If you do a cd and then list some relative filenames, you may want to indent them slightly for readability. If you supply your own die() or warn() message, you can use $file to interpolate the filename. Filetests may be bunched: "-rwx" tests for all of C<-r>, C<-w>, and C<-x>. Only the first failed test of the bunch will produce a warning. The routine returns the number of warnings issued. =cut @ISA = qw(Exporter); @EXPORT = qw(validate); # $RCSfile: validate.pl,v $$Revision: 4.1 $$Date: 92/08/07 18:24:19 $ # The validate routine takes a single multiline string consisting of # lines containing a filename plus a file test to try on it. (The # file test may also be a 'cd', causing subsequent relative filenames # to be interpreted relative to that directory.) After the file test # you may put '|| die' to make it a fatal error if the file test fails. # The default is '|| warn'. The file test may optionally have a ! prepended # to test for the opposite condition. If you do a cd and then list some # relative filenames, you may want to indent them slightly for readability. # If you supply your own "die" or "warn" message, you can use $file to # interpolate the filename. # Filetests may be bunched: -rwx tests for all of -r, -w and -x. # Only the first failed test of the bunch will produce a warning. # The routine returns the number of warnings issued. # Usage: # use File::CheckTree; # $warnings += validate(' # /vmunix -e || die # /boot -e || die # /bin cd # csh -ex # csh !-ug # sh -ex # sh !-ug # /usr -d || warn "What happened to $file?\n" # '); sub validate { local($file,$test,$warnings,$oldwarnings); foreach $check (split(/\n/,$_[0])) { next if $check =~ /^#/; next if $check =~ /^$/; ($file,$test) = split(' ',$check,2); if ($test =~ s/^(!?-)(\w{2,}\b)/$1Z/) { $testlist = $2; @testlist = split(//,$testlist); } else { @testlist = ('Z'); } $oldwarnings = $warnings; foreach $one (@testlist) { $this = $test; $this =~ s/(-\w\b)/$1 \$file/g; $this =~ s/-Z/-$one/; $this .= ' || warn' unless $this =~ /\|\|/; $this =~ s/^(.*\S)\s*\|\|\s*(die|warn)$/$1 || valmess('$2','$1')/; $this =~ s/\bcd\b/chdir (\$cwd = \$file)/g; eval $this; last if $warnings > $oldwarnings; } } $warnings; } sub valmess { local($disposition,$this) = @_; $file = $cwd . '/' . $file unless $file =~ m|^/|s; if ($this =~ /^(!?)-(\w)\s+\$file\s*$/) { $neg = $1; $tmp = $2; $tmp eq 'r' && ($mess = "$file is not readable by uid $>."); $tmp eq 'w' && ($mess = "$file is not writable by uid $>."); $tmp eq 'x' && ($mess = "$file is not executable by uid $>."); $tmp eq 'o' && ($mess = "$file is not owned by uid $>."); $tmp eq 'R' && ($mess = "$file is not readable by you."); $tmp eq 'W' && ($mess = "$file is not writable by you."); $tmp eq 'X' && ($mess = "$file is not executable by you."); $tmp eq 'O' && ($mess = "$file is not owned by you."); $tmp eq 'e' && ($mess = "$file does not exist."); $tmp eq 'z' && ($mess = "$file does not have zero size."); $tmp eq 's' && ($mess = "$file does not have non-zero size."); $tmp eq 'f' && ($mess = "$file is not a plain file."); $tmp eq 'd' && ($mess = "$file is not a directory."); $tmp eq 'l' && ($mess = "$file is not a symbolic link."); $tmp eq 'p' && ($mess = "$file is not a named pipe (FIFO)."); $tmp eq 'S' && ($mess = "$file is not a socket."); $tmp eq 'b' && ($mess = "$file is not a block special file."); $tmp eq 'c' && ($mess = "$file is not a character special file."); $tmp eq 'u' && ($mess = "$file does not have the setuid bit set."); $tmp eq 'g' && ($mess = "$file does not have the setgid bit set."); $tmp eq 'k' && ($mess = "$file does not have the sticky bit set."); $tmp eq 'T' && ($mess = "$file is not a text file."); $tmp eq 'B' && ($mess = "$file is not a binary file."); if ($neg eq '!') { $mess =~ s/ is not / should not be / || $mess =~ s/ does not / should not / || $mess =~ s/ not / /; } } else { $this =~ s/\$file/'$file'/g; $mess = "Can't do $this.\n"; } die "$mess\n" if $disposition eq 'die'; warn "$mess\n"; ++$warnings; } 1;