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package Strict::Perl; |
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###################################################################### |
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# |
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# Strict::Perl - Perl module to restrict old/unsafe constructs |
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# |
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# http://search.cpan.org/dist/Strict-Perl/ |
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# |
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# Copyright (c) 2014, 2015 INABA Hitoshi |
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###################################################################### |
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$Strict::Perl::VERSION = 2015.07; |
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1
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1
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11904
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use 5.00503; |
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2
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1
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43
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14
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1
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5
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use strict; |
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1
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1
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878
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15
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local $^W = 1; |
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17
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# use strict; |
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sub _strict { |
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0
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require strict; |
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20
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0
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if (($] < 5.006) and exists $INC{'Fake/Our.pm'}) { |
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# no strict qw(vars); on Fake::Our used |
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} |
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23
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else { |
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0
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0
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strict::->import(qw(vars)); |
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} |
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26
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0
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0
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strict::->import(qw(refs subs)); |
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} |
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28
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29
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# use warnings; |
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30
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sub _warnings { |
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31
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1
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1
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7
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require warnings; |
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32
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1
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839
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warnings::->import; |
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33
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} |
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34
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35
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# install Fatal CORE::* functions |
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36
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sub _Fatal { |
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37
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0
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0
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0
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my $package = (caller(1))[0]; |
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38
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39
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0
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0
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for my $function ( |
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40
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qw(seek sysseek), # :io (excluded: read sysread syswrite) |
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41
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qw(dbmclose dbmopen), # :dbm |
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42
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qw(binmode close chmod chown fcntl flock ioctl truncate), # :file (excluded: fileno) |
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43
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qw(chdir closedir link mkdir readlink rename rmdir symlink), # :filesys (excluded: unlink) |
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44
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qw(msgctl msgget msgrcv msgsnd), # :msg |
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45
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qw(semctl semget semop), # :semaphore |
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46
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qw(shmctl shmget shmread), # :shm |
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47
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qw(bind connect getsockopt listen recv send setsockopt shutdown socketpair), # :socket |
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48
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qw(fork), # :threads |
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49
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) { |
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50
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0
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0
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_install_fatal_function($function, $package); |
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51
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} |
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52
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53
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# not on Modern::Open |
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54
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0
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0
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0
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0
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if (($] >= 5.006) or not exists $INC{'Modern/Open.pm'}) { |
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55
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0
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0
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for my $function (qw(open opendir sysopen pipe accept)) { |
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56
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0
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0
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_install_fatal_function($function, $package); |
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57
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} |
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58
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} |
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59
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} |
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60
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61
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# make fatal invocation |
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62
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sub _fatal_invocation { |
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63
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0
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0
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0
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my($function, $proto) = @_; |
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64
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65
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0
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0
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my $n = -1; |
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66
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0
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0
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local @_ = (); |
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67
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0
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0
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my @prototype = (); |
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68
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0
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0
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my $seen_semicolon = 0; |
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69
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70
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0
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0
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$proto =~ s/_$/;\$/; |
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71
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0
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0
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$proto =~ s/_;/;\$/; |
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72
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0
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0
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while ($proto =~ /\S/) { |
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73
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0
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0
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$n++; |
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74
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0
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0
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0
|
if ($seen_semicolon) { |
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75
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0
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0
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push @prototype, [$n, @_]; |
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76
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} |
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77
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0
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0
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0
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if ($proto =~ s/^\s*\\([\@%\$\&])//) { |
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78
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0
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0
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push @_, $1 . "{\$_[$n]}"; |
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79
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0
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0
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next; |
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80
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} |
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81
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0
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0
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0
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if ($proto =~ s/^\s*([*\$&])//) { |
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82
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0
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0
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push @_, "\$_[$n]"; |
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83
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0
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0
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next; |
|
84
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} |
|
85
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0
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0
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0
|
if ($proto =~ s/^\s*(;\s*)?\@//) { |
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86
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0
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0
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push @_, "\@_[$n..\$#_]"; |
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87
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0
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0
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last; |
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88
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} |
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89
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0
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0
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0
|
if ($proto =~ s/^\s*;//) { |
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90
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0
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0
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$seen_semicolon = 1; |
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91
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0
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0
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$n--; |
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92
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0
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0
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next; |
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93
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} |
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94
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0
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0
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die "Unknown prototype letters: \"$proto\""; |
|
95
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} |
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96
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0
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0
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push @prototype, [$n+1, @_]; |
|
97
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|
98
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0
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0
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0
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if (@prototype == 1) { |
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99
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0
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0
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my @argv = @{$prototype[0]}; |
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0
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0
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100
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0
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0
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shift @argv; |
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101
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0
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0
|
local $" = ', '; |
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102
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0
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0
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return qq{\tCORE::$function(@argv) || croak "Can't $function(\@_): \$!";}; |
|
103
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|
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} |
|
104
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|
else { |
|
105
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0
|
|
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0
|
local @_ = <
|
|
106
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|
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\tif (0) { |
|
107
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\t} |
|
108
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|
END |
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109
|
0
|
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0
|
while (@prototype) { |
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110
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0
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0
|
my @argv = @{shift @prototype}; |
|
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0
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0
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111
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0
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0
|
my $n = shift @argv; |
|
112
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0
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0
|
local $" = ', '; |
|
113
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0
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0
|
push @_, <
|
|
114
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|
|
\telsif (\@_ == $n) { |
|
115
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|
|
\t\treturn CORE::$function(@argv) || croak "Can't $function(\@_): \$!"; |
|
116
|
|
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|
|
|
|
\t} |
|
117
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END |
|
118
|
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|
|
} |
|
119
|
0
|
|
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|
0
|
push @_, qq{\tdie "$function(\@_): Do not expect to get ", scalar \@_, " arguments";}; |
|
120
|
0
|
|
|
|
|
0
|
return join '', @_; |
|
121
|
|
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|
|
} |
|
122
|
|
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|
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|
|
} |
|
123
|
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|
124
|
|
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|
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|
|
# install Fatal function to package |
|
125
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|
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|
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|
|
sub _install_fatal_function { |
|
126
|
0
|
|
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0
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|
0
|
my($function, $package) = @_; |
|
127
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|
128
|
0
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0
|
my $proto = eval { prototype "CORE::$function" }; |
|
|
0
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0
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|
|
129
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0
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0
|
|
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0
|
if ($@) { |
|
130
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0
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|
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|
|
0
|
die "$function is not a builtin"; |
|
131
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|
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|
|
} |
|
132
|
0
|
0
|
|
|
|
0
|
if (not defined $proto) { |
|
133
|
0
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|
|
|
|
0
|
die "Cannot install a fatal function since non-overridable builtin"; |
|
134
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|
|
} |
|
135
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|
136
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0
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|
0
|
my $code = <
|
|
137
|
0
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0
|
sub ($proto) { |
|
138
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\tlocal \$" = ', '; |
|
139
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\tlocal \$! = 0; |
|
140
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@{[_fatal_invocation($function,$proto)]} |
|
141
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|
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} |
|
142
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|
143
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|
END |
|
144
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|
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|
|
{ |
|
145
|
1
|
|
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1
|
|
5
|
no strict 'refs'; |
|
|
1
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4
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1
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|
682
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0
|
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0
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|
|
146
|
0
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|
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|
0
|
$code = eval "package $package; use Carp; $code"; |
|
147
|
0
|
0
|
|
|
|
0
|
die if $@; |
|
148
|
0
|
|
|
|
|
0
|
local $^W = 0; |
|
149
|
0
|
|
|
|
|
0
|
*{"${package}::$function"} = $code; |
|
|
0
|
|
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0
|
|
|
150
|
|
|
|
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|
|
} |
|
151
|
|
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|
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} |
|
152
|
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|
153
|
|
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|
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|
|
# use autodie qw(...); |
|
154
|
|
|
|
|
|
|
sub _autodie { |
|
155
|
0
|
|
|
0
|
|
0
|
require autodie; |
|
156
|
|
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|
|
package main; |
|
157
|
0
|
|
|
|
|
0
|
autodie::->import( |
|
158
|
|
|
|
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|
|
qw(read sysread syswrite), # :io |
|
159
|
|
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|
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|
|
qw(fileno), # :file |
|
160
|
|
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|
|
# nothing # :filesys (excluded: unlink) |
|
161
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|
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|
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); |
|
162
|
|
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|
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} |
|
163
|
|
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|
|
164
|
|
|
|
|
|
|
# $SIG{__WARN__}, $SIG{__DIE__} |
|
165
|
|
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|
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|
|
sub _SIG { |
|
166
|
|
|
|
|
|
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|
|
167
|
|
|
|
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|
|
# use warnings qw(FATAL all); |
|
168
|
|
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|
|
|
|
$SIG{__WARN__} = sub { |
|
169
|
|
|
|
|
|
|
|
|
170
|
|
|
|
|
|
|
# avoid: Use of reserved word "our" is deprecated |
|
171
|
0
|
0
|
0
|
0
|
|
0
|
if (($_[0] =~ /^Use of reserved word "our" is deprecated at /) and exists $INC{'Fake/Our.pm'}) { |
|
|
|
0
|
|
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|
|
|
|
172
|
|
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|
|
# ignore message |
|
173
|
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|
|
} |
|
174
|
|
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|
175
|
|
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|
|
# ignore wrong warning: Name "main::BAREWORD" used only once |
|
176
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|
|
|
|
|
|
elsif ($_[0] =~ /Name "main::[A-Za-z_][A-Za-z_0-9]*" used only once:/) { |
|
177
|
0
|
0
|
|
|
|
0
|
if ($] < 5.012) { |
|
178
|
|
|
|
|
|
|
# ignore message |
|
179
|
|
|
|
|
|
|
} |
|
180
|
|
|
|
|
|
|
else { |
|
181
|
0
|
|
|
|
|
0
|
$SIG{__DIE__}->(@_); |
|
182
|
|
|
|
|
|
|
} |
|
183
|
|
|
|
|
|
|
} |
|
184
|
|
|
|
|
|
|
else { |
|
185
|
0
|
|
|
|
|
0
|
$SIG{__DIE__}->(@_); |
|
186
|
|
|
|
|
|
|
} |
|
187
|
1
|
|
|
1
|
|
7
|
}; |
|
188
|
|
|
|
|
|
|
|
|
189
|
|
|
|
|
|
|
# HACK #55 Show Source Code on Errors in Chapter 6: Debugging of PERL HACKS |
|
190
|
|
|
|
|
|
|
$SIG{__DIE__} = sub { |
|
191
|
1
|
|
|
1
|
|
40
|
print STDERR __PACKAGE__, ': '; |
|
192
|
1
|
50
|
|
|
|
16
|
print STDERR "$^E\n" if defined($^E); |
|
193
|
1
|
|
|
|
|
3
|
print STDERR "$_[0]\n"; |
|
194
|
|
|
|
|
|
|
|
|
195
|
1
|
|
|
|
|
2
|
my $i = 0; |
|
196
|
1
|
|
|
|
|
2
|
my @confess = (); |
|
197
|
1
|
|
|
|
|
7
|
while (my($package,$filename,$line,$subroutine) = caller($i)) { |
|
198
|
12
|
|
|
|
|
29
|
push @confess, [$i,$package,$filename,$line,$subroutine]; |
|
199
|
12
|
|
|
|
|
40
|
$i++; |
|
200
|
|
|
|
|
|
|
} |
|
201
|
1
|
|
|
|
|
2
|
for my $confess (reverse @confess) { |
|
202
|
12
|
|
|
|
|
9
|
my($i,$package,$filename,$line,$subroutine) = @{$confess}; |
|
|
12
|
|
|
|
|
25
|
|
|
203
|
12
|
50
|
|
|
|
18
|
next if $package eq __PACKAGE__; |
|
204
|
12
|
50
|
|
|
|
17
|
next if $package eq 'Carp'; |
|
205
|
|
|
|
|
|
|
|
|
206
|
12
|
|
|
|
|
97
|
print STDERR "[$i] $subroutine in $filename\n"; |
|
207
|
12
|
100
|
|
|
|
147
|
if (open(SCRIPT,$filename)) { |
|
208
|
5
|
|
|
|
|
2425
|
my @script = (undef, |