1 | ;# $RCSfile: validate.pl,v $$Revision: 4.1 $$Date: 92/08/07 18:24:19 $
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2 |
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3 | ;# The validate routine takes a single multiline string consisting of
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4 | ;# lines containing a filename plus a file test to try on it. (The
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5 | ;# file test may also be a 'cd', causing subsequent relative filenames
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6 | ;# to be interpreted relative to that directory.) After the file test
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7 | ;# you may put '|| die' to make it a fatal error if the file test fails.
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8 | ;# The default is '|| warn'. The file test may optionally have a ! prepended
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9 | ;# to test for the opposite condition. If you do a cd and then list some
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10 | ;# relative filenames, you may want to indent them slightly for readability.
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11 | ;# If you supply your own "die" or "warn" message, you can use $file to
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12 | ;# interpolate the filename.
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13 |
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14 | ;# Filetests may be bunched: -rwx tests for all of -r, -w and -x.
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15 | ;# Only the first failed test of the bunch will produce a warning.
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16 |
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17 | ;# The routine returns the number of warnings issued.
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18 |
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19 | ;# Usage:
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20 | ;# require "validate.pl";
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21 | ;# $warnings += do validate('
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22 | ;# /vmunix -e || die
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23 | ;# /boot -e || die
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24 | ;# /bin cd
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25 | ;# csh -ex
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26 | ;# csh !-ug
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27 | ;# sh -ex
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28 | ;# sh !-ug
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29 | ;# /usr -d || warn "What happened to $file?\n"
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30 | ;# ');
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31 |
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32 | sub validate {
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33 | local($file,$test,$warnings,$oldwarnings);
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34 | foreach $check (split(/\n/,$_[0])) {
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35 | next if $check =~ /^#/;
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36 | next if $check =~ /^$/;
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37 | ($file,$test) = split(' ',$check,2);
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38 | if ($test =~ s/^(!?-)(\w{2,}\b)/$1Z/) {
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39 | $testlist = $2;
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40 | @testlist = split(//,$testlist);
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41 | }
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42 | else {
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43 | @testlist = ('Z');
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44 | }
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45 | $oldwarnings = $warnings;
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46 | foreach $one (@testlist) {
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47 | $this = $test;
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48 | $this =~ s/(-\w\b)/$1 \$file/g;
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49 | $this =~ s/-Z/-$one/;
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50 | $this .= ' || warn' unless $this =~ /\|\|/;
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51 | $this =~ s/^(.*\S)\s*\|\|\s*(die|warn)$/$1 || do valmess('$2','$1')/;
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52 | $this =~ s/\bcd\b/chdir (\$cwd = \$file)/g;
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53 | eval $this;
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54 | last if $warnings > $oldwarnings;
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55 | }
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56 | }
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57 | $warnings;
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58 | }
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59 |
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60 | sub valmess {
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61 | local($disposition,$this) = @_;
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62 | $file = $cwd . '/' . $file unless $file =~ m|^/|;
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63 | if ($this =~ /^(!?)-(\w)\s+\$file\s*$/) {
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64 | $neg = $1;
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65 | $tmp = $2;
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66 | $tmp eq 'r' && ($mess = "$file is not readable by uid $>.");
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67 | $tmp eq 'w' && ($mess = "$file is not writable by uid $>.");
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68 | $tmp eq 'x' && ($mess = "$file is not executable by uid $>.");
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69 | $tmp eq 'o' && ($mess = "$file is not owned by uid $>.");
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70 | $tmp eq 'R' && ($mess = "$file is not readable by you.");
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71 | $tmp eq 'W' && ($mess = "$file is not writable by you.");
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72 | $tmp eq 'X' && ($mess = "$file is not executable by you.");
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73 | $tmp eq 'O' && ($mess = "$file is not owned by you.");
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74 | $tmp eq 'e' && ($mess = "$file does not exist.");
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75 | $tmp eq 'z' && ($mess = "$file does not have zero size.");
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76 | $tmp eq 's' && ($mess = "$file does not have non-zero size.");
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77 | $tmp eq 'f' && ($mess = "$file is not a plain file.");
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78 | $tmp eq 'd' && ($mess = "$file is not a directory.");
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79 | $tmp eq 'l' && ($mess = "$file is not a symbolic link.");
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80 | $tmp eq 'p' && ($mess = "$file is not a named pipe (FIFO).");
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81 | $tmp eq 'S' && ($mess = "$file is not a socket.");
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82 | $tmp eq 'b' && ($mess = "$file is not a block special file.");
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83 | $tmp eq 'c' && ($mess = "$file is not a character special file.");
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84 | $tmp eq 'u' && ($mess = "$file does not have the setuid bit set.");
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85 | $tmp eq 'g' && ($mess = "$file does not have the setgid bit set.");
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86 | $tmp eq 'k' && ($mess = "$file does not have the sticky bit set.");
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87 | $tmp eq 'T' && ($mess = "$file is not a text file.");
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88 | $tmp eq 'B' && ($mess = "$file is not a binary file.");
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89 | if ($neg eq '!') {
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90 | $mess =~ s/ is not / should not be / ||
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91 | $mess =~ s/ does not / should not / ||
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92 | $mess =~ s/ not / /;
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93 | }
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94 | print STDERR $mess,"\n";
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95 | }
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96 | else {
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97 | $this =~ s/\$file/'$file'/g;
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98 | print STDERR "Can't do $this.\n";
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99 | }
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100 | if ($disposition eq 'die') { exit 1; }
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101 | ++$warnings;
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102 | }
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103 |
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104 | 1;
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