7baab87798
Make the commands print a short usage summary and add a README file that explains the dependencies. Change-Id: I0c3f0713749ecfca23afaa2b536ac70dbdd7db0a Reviewed-on: https://boringssl-review.googlesource.com/2471 Reviewed-by: Adam Langley <agl@google.com>
119 lines
2.0 KiB
Perl
119 lines
2.0 KiB
Perl
#!/usr/bin/env perl
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use strict;
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if (scalar @ARGV != 2)
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{
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print "Usage: perl obj_xref.pl obj_mac.num obj_xref.txt > obj_xref.h\n";
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exit 1;
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}
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my %xref_tbl;
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my %oid_tbl;
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my ($mac_file, $xref_file) = @ARGV;
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open(IN, $mac_file) || die "Can't open $mac_file";
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# Read in OID nid values for a lookup table.
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while (<IN>)
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{
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chomp;
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my ($name, $num) = /^(\S+)\s+(\S+)$/;
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$oid_tbl{$name} = $num;
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}
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close IN;
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open(IN, $xref_file) || die "Can't open $xref_file";
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my $ln = 1;
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while (<IN>)
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{
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chomp;
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s/#.*$//;
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next if (/^\S*$/);
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my ($xr, $p1, $p2) = /^(\S+)\s+(\S+)\s+(\S+)/;
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check_oid($xr);
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check_oid($p1);
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check_oid($p2);
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$xref_tbl{$xr} = [$p1, $p2, $ln];
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}
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my @xrkeys = keys %xref_tbl;
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my @srt1 = sort { $oid_tbl{$a} <=> $oid_tbl{$b}} @xrkeys;
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for(my $i = 0; $i <= $#srt1; $i++)
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{
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$xref_tbl{$srt1[$i]}[2] = $i;
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}
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my @srt2 = sort
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{
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my$ap1 = $oid_tbl{$xref_tbl{$a}[0]};
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my$bp1 = $oid_tbl{$xref_tbl{$b}[0]};
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return $ap1 - $bp1 if ($ap1 != $bp1);
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my$ap2 = $oid_tbl{$xref_tbl{$a}[1]};
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my$bp2 = $oid_tbl{$xref_tbl{$b}[1]};
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return $ap2 - $bp2;
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} @xrkeys;
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my $pname = $0;
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$pname =~ s|^.[^/]/||;
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print <<EOF;
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/* THIS FILE IS GENERATED FROM obj_xref.txt by obj_xref.pl via the
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* following command:
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* perl obj_xref.pl obj_mac.num obj_xref.txt > obj_xref.h */
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typedef struct
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{
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int sign_id;
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int hash_id;
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int pkey_id;
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} nid_triple;
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static const nid_triple sigoid_srt[] =
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{
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EOF
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foreach (@srt1)
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{
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my $xr = $_;
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my ($p1, $p2) = @{$xref_tbl{$_}};
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print "\t{NID_$xr, NID_$p1, NID_$p2},\n";
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}
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print "\t};";
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print <<EOF;
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static const nid_triple * const sigoid_srt_xref[] =
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{
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EOF
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foreach (@srt2)
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{
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my ($p1, $p2, $x) = @{$xref_tbl{$_}};
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# If digest or signature algorithm is "undef" then the algorithm
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# needs special handling and is excluded from the cross reference table.
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next if $p1 eq "undef" || $p2 eq "undef";
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print "\t\&sigoid_srt\[$x\],\n";
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}
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print "\t};\n\n";
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sub check_oid
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{
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my ($chk) = @_;
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if (!exists $oid_tbl{$chk})
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{
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die "Not Found \"$chk\"\n";
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}
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}
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