util/ck_errf.pl

   1 #! /usr/bin/env perl
   2 # Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
   3 #
   4 # Licensed under the OpenSSL license (the "License").  You may not use
   5 # this file except in compliance with the License.  You can obtain a copy
   6 # in the file LICENSE in the source distribution or at
   7 # https://www.openssl.org/source/license.html
   8
   9 # This is just a quick script to scan for cases where the 'error'
  10 # function name in a XXXerr() macro is wrong.
  11 #
  12 # Run in the top level by going
  13 # perl util/ck_errf.pl */*.c */*/*.c
  14 #
  15
  16 use strict;
  17 use warnings;
  18
  19 my $config;
  20 my $err_strict = 0;
  21 my $debug      = 0;
  22 my $internal   = 0;
  23
  24 sub help
  25 {
  26     print STDERR <<"EOF";
  27 mkerr.pl [options] [files...]
  28
  29 Options:
  30
  31     -conf FILE  Use the named config file FILE instead of the default.
  32
  33     -debug      Verbose output debugging on stderr.
  34
  35     -internal   Generate code that is to be built as part of OpenSSL itself.
  36                 Also scans internal list of files.
  37
  38     -strict     If any error was found, fail with exit code 1, otherwise 0.
  39
  40     -help       Show this help text.
  41
  42     ...         Additional arguments are added to the file list to scan,
  43                 if '-internal' was NOT specified on the command line.
  44
  45 EOF
  46 }
  47
  48 while ( @ARGV ) {
  49     my $arg = $ARGV[0];
  50     last unless $arg =~ /-.*/;
  51     $arg = $1 if $arg =~ /-(-.*)/;
  52     if ( $arg eq "-conf" ) {
  53         $config = $ARGV[1];
  54         shift @ARGV;
  55     } elsif ( $arg eq "-debug" ) {
  56         $debug = 1;
  57     } elsif ( $arg eq "-internal" ) {
  58         $internal = 1;
  59     } elsif ( $arg eq "-strict" ) {
  60         $err_strict = 1;
  61     } elsif ( $arg =~ /-*h(elp)?/ ) {
  62         &help();
  63         exit;
  64     } elsif ( $arg =~ /-.*/ ) {
  65         die "Unknown option $arg; use -h for help.\n";
  66     }
  67     shift @ARGV;
  68 }
  69
  70 my @source;
  71 if ( $internal ) {
  72     die "Extra parameters given.\n" if @ARGV;
  73     $config = "crypto/err/openssl.ec" unless defined $config;
  74     @source = ( glob('crypto/*.c'), glob('crypto/*/*.c'),
  75                 glob('ssl/*.c'), glob('ssl/*/*.c') );
  76 } else {
  77     die "Configuration file not given.\nSee '$0 -help' for information\n"
  78         unless defined $config;
  79     @source = @ARGV;
  80 }
  81
  82 # To detect if there is any error generation for a libcrypto/libssl libs
  83 # we don't know, we need to find out what libs we do know.  That list is
  84 # readily available in crypto/err/openssl.ec, in form of lines starting
  85 # with "L ".  Note that we always rely on the modules SYS and ERR to be
  86 # generally available.
  87 my %libs       = ( SYS => 1, ERR => 1 );
  88 open my $cfh, $config or die "Trying to read $config: $!\n";
  89 while (<$cfh>) {
  90     s|\R$||;                    # Better chomp
  91     next unless m|^L ([0-9A-Z_]+)\s|;
  92     next if $1 eq "NONE";
  93     $libs{$1} = 1;
  94 }
  95
  96 my $bad = 0;
  97 foreach my $file (@source) {
  98     open( IN, "<$file" ) || die "Can't open $file, $!";
  99     my $func = "";
 100     while (<IN>) {
 101         if ( !/;$/ && /^\**([a-zA-Z_].*[\s*])?([A-Za-z_0-9]+)\(.*([),]|$)/ ) {
 102             /^([^()]*(\([^()]*\)[^()]*)*)\(/;
 103             $1 =~ /([A-Za-z_0-9]*)$/;
 104             $func = $1;
 105             $func =~ tr/A-Z/a-z/;
 106         }
 107         if ( /([A-Z0-9_]+[A-Z0-9])err\(([^,]+)/ && !/ckerr_ignore/ ) {
 108             my $errlib = $1;
 109             my $n      = $2;
 110
 111             unless ( $libs{$errlib} ) {
 112                 print "$file:$.:$errlib not listed in $config\n";
 113                 $libs{$errlib} = 1; # To not display it again
 114                 $bad = 1;
 115             }
 116
 117             if ( $func eq "" ) {
 118                 print "$file:$.:???:$n\n";
 119                 $bad = 1;
 120                 next;
 121             }
 122
 123             if ( $n !~ /^(.+)_F_(.+)$/ ) {
 124                 #print "check -$file:$.:$func:$n\n";
 125                 next;
 126             }
 127             my $lib = $1;
 128             $n   = $2;
 129
 130             if ( $lib ne $errlib ) {
 131                 print "$file:$.:$func:$n [${errlib}err]\n";
 132                 $bad = 1;
 133                 next;
 134             }
 135
 136             $n =~ tr/A-Z/a-z/;
 137             if ( $n ne $func && $errlib ne "SYS" ) {
 138                 print "$file:$.:$func:$n\n";
 139                 $bad = 1;
 140                 next;
 141             }
 142
 143             #           print "$func:$1\n";
 144         }
 145     }
 146     close(IN);
 147 }
 148
 149 if ( $bad && $err_strict ) {
 150     print STDERR "FATAL: error discrepancy\n";
 151     exit 1;
 152 }