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- ;# $Header: validate.pl,v 4.0 91/03/20 01:26:56 lwall Locked $
-
- ;# 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;
-