;# 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: ;# require "validate.pl"; ;# $warnings += do 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 || do 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 $file =~ m|^/|; if ($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 / /; } print STDERR $mess,"\n"; } else { $this =~ s/\$file/'$file'/g; print STDERR "Can't do $this.\n"; } if ($disposition eq 'die') { exit 1; } ++$warnings; } 1;