1;# $RCSfile: validate.pl,v $$Revision: 4.1 $$Date: 92/08/07 18:24:19 $ 2 3;# The validate routine takes a single multiline string consisting of 4;# lines containing a filename plus a file test to try on it. (The 5;# file test may also be a 'cd', causing subsequent relative filenames 6;# to be interpreted relative to that directory.) After the file test 7;# you may put '|| die' to make it a fatal error if the file test fails. 8;# The default is '|| warn'. The file test may optionally have a ! prepended 9;# to test for the opposite condition. If you do a cd and then list some 10;# relative filenames, you may want to indent them slightly for readability. 11;# If you supply your own "die" or "warn" message, you can use $file to 12;# interpolate the filename. 13 14;# Filetests may be bunched: -rwx tests for all of -r, -w and -x. 15;# Only the first failed test of the bunch will produce a warning. 16 17;# The routine returns the number of warnings issued. 18 19;# Usage: 20;# require "validate.pl"; 21;# $warnings += do validate(' 22;# /vmunix -e || die 23;# /boot -e || die 24;# /bin cd 25;# csh -ex 26;# csh !-ug 27;# sh -ex 28;# sh !-ug 29;# /usr -d || warn "What happened to $file?\n" 30;# '); 31 32sub validate { 33 local($file,$test,$warnings,$oldwarnings); 34 foreach $check (split(/\n/,$_[0])) { 35 next if $check =~ /^#/; 36 next if $check =~ /^$/; 37 ($file,$test) = split(' ',$check,2); 38 if ($test =~ s/^(!?-)(\w{2,}\b)/$1Z/) { 39 $testlist = $2; 40 @testlist = split(//,$testlist); 41 } 42 else { 43 @testlist = ('Z'); 44 } 45 $oldwarnings = $warnings; 46 foreach $one (@testlist) { 47 $this = $test; 48 $this =~ s/(-\w\b)/$1 \$file/g; 49 $this =~ s/-Z/-$one/; 50 $this .= ' || warn' unless $this =~ /\|\|/; 51 $this =~ s/^(.*\S)\s*\|\|\s*(die|warn)$/$1 || do valmess('$2','$1')/; 52 $this =~ s/\bcd\b/chdir (\$cwd = \$file)/g; 53 eval $this; 54 last if $warnings > $oldwarnings; 55 } 56 } 57 $warnings; 58} 59 60sub valmess { 61 local($disposition,$this) = @_; 62 $file = $cwd . '/' . $file unless $file =~ m|^/|; 63 if ($this =~ /^(!?)-(\w)\s+\$file\s*$/) { 64 $neg = $1; 65 $tmp = $2; 66 $tmp eq 'r' && ($mess = "$file is not readable by uid $>."); 67 $tmp eq 'w' && ($mess = "$file is not writable by uid $>."); 68 $tmp eq 'x' && ($mess = "$file is not executable by uid $>."); 69 $tmp eq 'o' && ($mess = "$file is not owned by uid $>."); 70 $tmp eq 'R' && ($mess = "$file is not readable by you."); 71 $tmp eq 'W' && ($mess = "$file is not writable by you."); 72 $tmp eq 'X' && ($mess = "$file is not executable by you."); 73 $tmp eq 'O' && ($mess = "$file is not owned by you."); 74 $tmp eq 'e' && ($mess = "$file does not exist."); 75 $tmp eq 'z' && ($mess = "$file does not have zero size."); 76 $tmp eq 's' && ($mess = "$file does not have non-zero size."); 77 $tmp eq 'f' && ($mess = "$file is not a plain file."); 78 $tmp eq 'd' && ($mess = "$file is not a directory."); 79 $tmp eq 'l' && ($mess = "$file is not a symbolic link."); 80 $tmp eq 'p' && ($mess = "$file is not a named pipe (FIFO)."); 81 $tmp eq 'S' && ($mess = "$file is not a socket."); 82 $tmp eq 'b' && ($mess = "$file is not a block special file."); 83 $tmp eq 'c' && ($mess = "$file is not a character special file."); 84 $tmp eq 'u' && ($mess = "$file does not have the setuid bit set."); 85 $tmp eq 'g' && ($mess = "$file does not have the setgid bit set."); 86 $tmp eq 'k' && ($mess = "$file does not have the sticky bit set."); 87 $tmp eq 'T' && ($mess = "$file is not a text file."); 88 $tmp eq 'B' && ($mess = "$file is not a binary file."); 89 if ($neg eq '!') { 90 $mess =~ s/ is not / should not be / || 91 $mess =~ s/ does not / should not / || 92 $mess =~ s/ not / /; 93 } 94 print STDERR $mess,"\n"; 95 } 96 else { 97 $this =~ s/\$file/'$file'/g; 98 print STDERR "Can't do $this.\n"; 99 } 100 if ($disposition eq 'die') { exit 1; } 101 ++$warnings; 102} 103 1041; 105