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|
#! /usr/bin/env perl
# Copyright 1999-2018 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the OpenSSL license (the "License"). You may not use
# this file except in compliance with the License. You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html
use strict;
use warnings;
use lib ".";
use configdata;
my $config = "crypto/err/openssl.ec";
my $debug = 0;
my $internal = 0;
my $nowrite = 0;
my $rebuild = 0;
my $reindex = 0;
my $static = 0;
my $unref = 0;
my %modules = ();
my $errors = 0;
my @t = localtime();
my $YEAR = $t[5] + 1900;
sub phase
{
my $text = uc(shift);
print STDERR "\n---\n$text\n" if $debug;
}
sub help
{
print STDERR <<"EOF";
mkerr.pl [options] [files...]
Options:
-conf FILE Use the named config file FILE instead of the default.
-debug Verbose output debugging on stderr.
-internal Generate code that is to be built as part of OpenSSL itself.
Also scans internal list of files.
-module M Only useful with -internal!
Only write files for library module M. Whether files are
actually written or not depends on other options, such as
-rebuild.
Note: this option is cumulative. If not given at all, all
internal modules will be considered.
-nowrite Do not write the header/source files, even if changed.
-rebuild Rebuild all header and C source files, even if there
were no changes.
-reindex Ignore previously assigned values (except for R records in
the config file) and renumber everything starting at 100.
-static Make the load/unload functions static.
-unref List all unreferenced function and reason codes on stderr;
implies -nowrite.
-help Show this help text.
... Additional arguments are added to the file list to scan,
if '-internal' was NOT specified on the command line.
EOF
}
while ( @ARGV ) {
my $arg = $ARGV[0];
last unless $arg =~ /-.*/;
$arg = $1 if $arg =~ /-(-.*)/;
if ( $arg eq "-conf" ) {
$config = $ARGV[1];
shift @ARGV;
} elsif ( $arg eq "-debug" ) {
$debug = 1;
$unref = 1;
} elsif ( $arg eq "-internal" ) {
$internal = 1;
} elsif ( $arg eq "-nowrite" ) {
$nowrite = 1;
} elsif ( $arg eq "-rebuild" ) {
$rebuild = 1;
} elsif ( $arg eq "-reindex" ) {
$reindex = 1;
} elsif ( $arg eq "-static" ) {
$static = 1;
} elsif ( $arg eq "-unref" ) {
$unref = 1;
$nowrite = 1;
} elsif ( $arg eq "-module" ) {
shift @ARGV;
$modules{uc $ARGV[0]} = 1;
} elsif ( $arg =~ /-*h(elp)?/ ) {
&help();
exit;
} elsif ( $arg =~ /-.*/ ) {
die "Unknown option $arg; use -h for help.\n";
}
shift @ARGV;
}
my @source;
if ( $internal ) {
die "Cannot mix -internal and -static\n" if $static;
die "Extra parameters given.\n" if @ARGV;
@source = ( glob('crypto/*.c'), glob('crypto/*/*.c'),
glob('ssl/*.c'), glob('ssl/*/*.c') );
} else {
die "-module isn't useful without -internal\n" if scalar keys %modules > 0;
@source = @ARGV;
}
# Data parsed out of the config and state files.
my %hinc; # lib -> header
my %libinc; # header -> lib
my %cskip; # error_file -> lib
my %errorfile; # lib -> error file name
my %fmax; # lib -> max assigned function code
my %rmax; # lib -> max assigned reason code
my %fassigned; # lib -> colon-separated list of assigned function codes
my %rassigned; # lib -> colon-separated list of assigned reason codes
my %fnew; # lib -> count of new function codes
my %rnew; # lib -> count of new reason codes
my %rextra; # "extra" reason code -> lib
my %rcodes; # reason-name -> value
my %ftrans; # old name -> #define-friendly name (all caps)
my %fcodes; # function-name -> value
my $statefile; # state file with assigned reason and function codes
my %strings; # define -> text
# Read and parse the config file
open(IN, "$config") || die "Can't open config file $config, $!,";
while ( <IN> ) {
next if /^#/ || /^$/;
if ( /^L\s+(\S+)\s+(\S+)\s+(\S+)/ ) {
my $lib = $1;
my $hdr = $2;
my $err = $3;
$hinc{$lib} = $hdr;
$libinc{$hdr} = $lib;
$cskip{$err} = $lib;
next if $err eq 'NONE';
$errorfile{$lib} = $err;
$fmax{$lib} = 100;
$rmax{$lib} = 100;
$fassigned{$lib} = ":";
$rassigned{$lib} = ":";
$fnew{$lib} = 0;
$rnew{$lib} = 0;
} elsif ( /^R\s+(\S+)\s+(\S+)/ ) {
$rextra{$1} = $2;
$rcodes{$1} = $2;
} elsif ( /^S\s+(\S+)/ ) {
$statefile = $1;
} else {
die "Illegal config line $_\n";
}
}
close IN;
if ( ! $statefile ) {
$statefile = $config;
$statefile =~ s/.ec/.txt/;
}
# The statefile has all the previous assignments.
&phase("Reading state");
my $skippedstate = 0;
if ( ! $reindex && $statefile ) {
open(STATE, "<$statefile") || die "Can't open $statefile, $!";
# Scan function and reason codes and store them: keep a note of the
# maximum code used.
while ( <STATE> ) {
next if /^#/ || /^$/;
my $name;
my $code;
if ( /^(.+):(\d+):\\$/ ) {
$name = $1;
$code = $2;
my $next = <STATE>;
$next =~ s/^\s*(.*)\s*$/$1/;
die "Duplicate define $name" if exists $strings{$name};
$strings{$name} = $next;
} elsif ( /^(\S+):(\d+):(.*)$/ ) {
$name = $1;
$code = $2;
die "Duplicate define $name" if exists $strings{$name};
$strings{$name} = $3;
} else {
die "Bad line in $statefile:\n$_\n";
}
my $lib = $name;
$lib =~ s/^((?:OSSL_|OPENSSL_)?[^_]{2,}).*$/$1/;
$lib = "SSL" if $lib =~ /TLS/;
if ( !defined $errorfile{$lib} ) {
print "Skipping $_";
$skippedstate++;
next;
}
if ( $name =~ /^(?:OSSL_|OPENSSL_)?[A-Z0-9]{2,}_R_/ ) {
die "$lib reason code $code collision at $name\n"
if $rassigned{$lib} =~ /:$code:/;
$rassigned{$lib} .= "$code:";
if ( !exists $rextra{$name} ) {
$rmax{$lib} = $code if $code > $rmax{$lib};
}
$rcodes{$name} = $code;
} elsif ( $name =~ /^(?:OSSL_|OPENSSL_)?[A-Z0-9]{2,}_F_/ ) {
die "$lib function code $code collision at $name\n"
if $fassigned{$lib} =~ /:$code:/;
$fassigned{$lib} .= "$code:";
$fmax{$lib} = $code if $code > $fmax{$lib};
$fcodes{$name} = $code;
} else {
die "Bad line in $statefile:\n$_\n";
}
}
close(STATE);
if ( $debug ) {
foreach my $lib ( sort keys %rmax ) {
print STDERR "Reason codes for ${lib}:\n";
if ( $rassigned{$lib} =~ m/^:(.*):$/ ) {
my @rassigned = sort { $a <=> $b } split( ":", $1 );
print STDERR " ", join(' ', @rassigned), "\n";
} else {
print STDERR " --none--\n";
}
}
print STDERR "\n";
foreach my $lib ( sort keys %fmax ) {
print STDERR "Function codes for ${lib}:\n";
if ( $fassigned{$lib} =~ m/^:(.*):$/ ) {
my @fassigned = sort { $a <=> $b } split( ":", $1 );
print STDERR " ", join(' ', @fassigned), "\n";
} else {
print STDERR " --none--\n";
}
}
}
}
# Scan each header file and make a list of error codes
# and function names
&phase("Scanning headers");
while ( ( my $hdr, my $lib ) = each %libinc ) {
next if $hdr eq "NONE";
print STDERR " ." if $debug;
my $line = "";
my $def = "";
my $linenr = 0;
my $cpp = 0;
open(IN, "<$hdr") || die "Can't open $hdr, $!,";
while ( <IN> ) {
$linenr++;
if ( $line ne '' ) {
$_ = $line . $_;
$line = '';
}
if ( /\\$/ ) {
$line = $_;
next;
}
if ( /\/\*/ ) {
if ( not /\*\// ) { # multiline comment...
$line = $_; # ... just accumulate
next;
} else {
s/\/\*.*?\*\///gs; # wipe it
}
}
if ( $cpp ) {
$cpp++ if /^#\s*if/;
$cpp-- if /^#\s*endif/;
next;
}
$cpp = 1 if /^#.*ifdef.*cplusplus/; # skip "C" declaration
next if /^\#/; # skip preprocessor directives
s/{[^{}]*}//gs; # ignore {} blocks
if ( /\{|\/\*/ ) { # Add a so editor works...
$line = $_;
} else {
$def .= $_;
}
}
# Delete any DECLARE_ macros
my $defnr = 0;
$def =~ s/DECLARE_\w+\([\w,\s]+\)//gs;
foreach ( split /;/, $def ) {
$defnr++;
# The goal is to collect function names from function declarations.
s/^[\n\s]*//g;
s/[\n\s]*$//g;
# Skip over recognized non-function declarations
next if /typedef\W/ or /DECLARE_STACK_OF/ or /TYPEDEF_.*_OF/;
# Remove STACK_OF(foo)
s/STACK_OF\(\w+\)/void/;
# Reduce argument lists to empty ()
# fold round brackets recursively: (t(*v)(t),t) -> (t{}{},t) -> {}
while ( /\(.*\)/s ) {
s/\([^\(\)]+\)/\{\}/gs;
s/\(\s*\*\s*(\w+)\s*\{\}\s*\)/$1/gs; #(*f{}) -> f
}
# pretend as we didn't use curly braces: {} -> ()
s/\{\}/\(\)/gs;
# Last token just before the first () is a function name.
if ( /(\w+)\s*\(\).*/s ) {
my $name = $1;
$name =~ tr/[a-z]/[A-Z]/;
$ftrans{$name} = $1;
} elsif ( /[\(\)]/ and not(/=/) ) {
print STDERR "Header $hdr: cannot parse: $_;\n";
}
}
next if $reindex;
if ( $lib eq "SSL" && $rmax{$lib} >= 1000 ) {
print STDERR "SSL error codes 1000+ are reserved for alerts.\n";
print STDERR "Any new alerts must be added to $config.\n";
$errors++;
}
close IN;
}
print STDERR "\n" if $debug;
# Scan each C source file and look for function and reason codes
# This is done by looking for strings that "look like" function or
# reason codes: basically anything consisting of all upper case and
# numerics which has _F_ or _R_ in it and which has the name of an
# error library at the start. This seems to work fine except for the
# oddly named structure BIO_F_CTX which needs to be ignored.
# If a code doesn't exist in list compiled from headers then mark it
# with the value "X" as a place holder to give it a value later.
# Store all function and reason codes found in %usedfuncs and %usedreasons
# so all those unreferenced can be printed out.
&phase("Scanning source");
my %usedfuncs;
my %usedreasons;
foreach my $file ( @source ) {
# Don't parse the error source file.
next if exists $cskip{$file};
open( IN, "<$file" ) || die "Can't open $file, $!,";
my $func;
my $linenr = 0;
print STDERR "$file:\n" if $debug;
while ( <IN> ) {
# skip obsoleted source files entirely!
last if /^#error\s+obsolete/;
$linenr++;
if ( !/;$/ && /^\**([a-zA-Z_].*[\s*])?([A-Za-z_0-9]+)\(.*([),]|$)/ ) {
/^([^()]*(\([^()]*\)[^()]*)*)\(/;
$1 =~ /([A-Za-z_0-9]*)$/;
$func = $1;
}
if ( /(((?:OSSL_|OPENSSL_)?[A-Z0-9]{2,})_F_([A-Z0-9_]+))/ ) {
next unless exists $errorfile{$2};
next if $1 eq "BIO_F_BUFFER_CTX";
$usedfuncs{$1} = 1;
if ( !exists $fcodes{$1} ) {
print STDERR " New function $1\n" if $debug;
$fcodes{$1} = "X";
$fnew{$2}++;
}
$ftrans{$3} = $func unless exists $ftrans{$3};
if ( uc($func) ne $3 ) {
print STDERR "ERROR: mismatch $file:$linenr $func:$3\n";
$errors++;
}
print STDERR " Function $1 = $fcodes{$1}\n"
if $debug;
}
if ( /(((?:OSSL_|OPENSSL_)?[A-Z0-9]{2,})_R_[A-Z0-9_]+)/ ) {
next unless exists $errorfile{$2};
$usedreasons{$1} = 1;
if ( !exists $rcodes{$1} ) {
print STDERR " New reason $1\n" if $debug;
$rcodes{$1} = "X";
$rnew{$2}++;
}
print STDERR " Reason $1 = $rcodes{$1}\n" if $debug;
}
}
close IN;
}
print STDERR "\n" if $debug;
# Now process each library in turn.
&phase("Writing files");
my $newstate = 0;
foreach my $lib ( keys %errorfile ) {
if ( ! $fnew{$lib} && ! $rnew{$lib} ) {
next unless $rebuild;
}
next if scalar keys %modules > 0 && !$modules{$lib};
next if $nowrite;
print STDERR "$lib: $fnew{$lib} new functions\n" if $fnew{$lib};
print STDERR "$lib: $rnew{$lib} new reasons\n" if $rnew{$lib};
$newstate = 1;
# If we get here then we have some new error codes so we
# need to rebuild the header file and C file.
# Make a sorted list of error and reason codes for later use.
my @function = sort grep( /^${lib}_/, keys %fcodes );
my @reasons = sort grep( /^${lib}_/, keys %rcodes );
# indent level for innermost preprocessor lines
my $indent = " ";
# Rewrite the header file
my $hfile = $hinc{$lib};
$hfile =~ s/.h$/err.h/ if $internal;
open( OUT, ">$hfile" ) || die "Can't write to $hfile, $!,";
print OUT <<"EOF";
/*
* Generated by util/mkerr.pl DO NOT EDIT
* Copyright 1995-$YEAR The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the \"License\"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#ifndef HEADER_${lib}ERR_H
# define HEADER_${lib}ERR_H
EOF
if ( $internal ) {
# Declare the load function because the generate C file
# includes "fooerr.h" not "foo.h"
if ($lib ne "SSL" && $lib ne "ASYNC"
&& grep { $lib eq uc $_ } @disablables) {
print OUT <<"EOF";
# include <openssl/opensslconf.h>
# ifndef OPENSSL_NO_${lib}
EOF
$indent = " ";
}
print OUT <<"EOF";
#${indent}ifdef __cplusplus
extern \"C\"
#${indent}endif
int ERR_load_${lib}_strings(void);
EOF
} else {
print OUT <<"EOF";
# define ${lib}err(f, r) ERR_${lib}_error((f), (r), OPENSSL_FILE, OPENSSL_LINE)
EOF
if ( ! $static ) {
print OUT <<"EOF";
# ifdef __cplusplus
extern \"C\" {
# endif
int ERR_load_${lib}_strings(void);
void ERR_unload_${lib}_strings(void);
void ERR_${lib}_error(int function, int reason, char *file, int line);
# ifdef __cplusplus
}
# endif
EOF
}
}
print OUT "\n/*\n * $lib function codes.\n */\n";
foreach my $i ( @function ) {
my $z = 48 - length($i);
$z = 0 if $z < 0;
if ( $fcodes{$i} eq "X" ) {
$fassigned{$lib} =~ m/^:([^:]*):/;
my $findcode = $1;
$findcode = $fmax{$lib} if !defined $findcode;
while ( $fassigned{$lib} =~ m/:$findcode:/ ) {
$findcode++;
}
$fcodes{$i} = $findcode;
$fassigned{$lib} .= "$findcode:";
print STDERR "New Function code $i\n" if $debug;
}
printf OUT "#${indent}define $i%s $fcodes{$i}\n", " " x $z;
}
print OUT "\n/*\n * $lib reason codes.\n */\n";
foreach my $i ( @reasons ) {
my $z = 48 - length($i);
$z = 0 if $z < 0;
if ( $rcodes{$i} eq "X" ) {
$rassigned{$lib} =~ m/^:([^:]*):/;
my $findcode = $1;
$findcode = $rmax{$lib} if !defined $findcode;
while ( $rassigned{$lib} =~ m/:$findcode:/ ) {
$findcode++;
}
$rcodes{$i} = $findcode;
$rassigned{$lib} .= "$findcode:";
print STDERR "New Reason code $i\n" if $debug;
}
printf OUT "#${indent}define $i%s $rcodes{$i}\n", " " x $z;
}
print OUT "\n";
while (length($indent) > 0) {
$indent = substr $indent, 0, -1;
print OUT "#${indent}endif\n";
}
# Rewrite the C source file containing the error details.
# First, read any existing reason string definitions:
my $cfile = $errorfile{$lib};
my $pack_lib = $internal ? "ERR_LIB_${lib}" : "0";
my $hincf = $hfile;
$hincf =~ s|.*include/||;
if ( $hincf =~ m|^openssl/| ) {
$hincf = "<${hincf}>";
} else {
$hincf = "\"${hincf}\"";
}
open( OUT, ">$cfile" )
|| die "Can't open $cfile for writing, $!, stopped";
my $const = $internal ? 'const ' : '';
print OUT <<"EOF";
/*
* Generated by util/mkerr.pl DO NOT EDIT
* Copyright 1995-$YEAR The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <openssl/err.h>
#include $hincf
#ifndef OPENSSL_NO_ERR
static ${const}ERR_STRING_DATA ${lib}_str_functs[] = {
EOF
# Add each function code: if a function name is found then use it.
foreach my $i ( @function ) {
my $fn;
if ( exists $strings{$i} and $strings{$i} ne '' ) {
$fn = $strings{$i};
$fn = "" if $fn eq '*';
} else {
$i =~ /^${lib}_F_(\S+)$/;
$fn = $1;
$fn = $ftrans{$fn} if exists $ftrans{$fn};
$strings{$i} = $fn;
}
my $short = " {ERR_PACK($pack_lib, $i, 0), \"$fn\"},";
if ( length($short) <= 80 ) {
print OUT "$short\n";
} else {
print OUT " {ERR_PACK($pack_lib, $i, 0),\n \"$fn\"},\n";
}
}
print OUT <<"EOF";
{0, NULL}
};
static ${const}ERR_STRING_DATA ${lib}_str_reasons[] = {
EOF
# Add each reason code.
foreach my $i ( @reasons ) {
my $rn;
if ( exists $strings{$i} ) {
$rn = $strings{$i};
$rn = "" if $rn eq '*';
} else {
$i =~ /^${lib}_R_(\S+)$/;
$rn = $1;
$rn =~ tr/_[A-Z]/ [a-z]/;
$strings{$i} = $rn;
}
my $short = " {ERR_PACK($pack_lib, 0, $i), \"$rn\"},";
if ( length($short) <= 80 ) {
print OUT "$short\n";
} else {
print OUT " {ERR_PACK($pack_lib, 0, $i),\n \"$rn\"},\n";
}
}
print OUT <<"EOF";
{0, NULL}
};
#endif
EOF
if ( $internal ) {
print OUT <<"EOF";
int ERR_load_${lib}_strings(void)
{
#ifndef OPENSSL_NO_ERR
if (ERR_func_error_string(${lib}_str_functs[0].error) == NULL) {
ERR_load_strings_const(${lib}_str_functs);
ERR_load_strings_const(${lib}_str_reasons);
}
#endif
return 1;
}
EOF
} else {
my $st = $static ? "static " : "";
print OUT <<"EOF";
static int lib_code = 0;
static int error_loaded = 0;
${st}int ERR_load_${lib}_strings(void)
{
if (lib_code == 0)
lib_code = ERR_get_next_error_library();
if (!error_loaded) {
#ifndef OPENSSL_NO_ERR
ERR_load_strings(lib_code, ${lib}_str_functs);
ERR_load_strings(lib_code, ${lib}_str_reasons);
#endif
error_loaded = 1;
}
return 1;
}
${st}void ERR_unload_${lib}_strings(void)
{
if (error_loaded) {
#ifndef OPENSSL_NO_ERR
ERR_unload_strings(lib_code, ${lib}_str_functs);
ERR_unload_strings(lib_code, ${lib}_str_reasons);
#endif
error_loaded = 0;
}
}
${st}void ERR_${lib}_error(int function, int reason, char *file, int line)
{
if (lib_code == 0)
lib_code = ERR_get_next_error_library();
ERR_PUT_error(lib_code, function, reason, file, line);
}
EOF
}
close OUT;
}
&phase("Ending");
# Make a list of unreferenced function and reason codes
if ( $unref ) {
my @funref;
foreach ( keys %fcodes ) {
push( @funref, $_ ) unless exists $usedfuncs{$_};
}
my @runref;
foreach ( keys %rcodes ) {
push( @runref, $_ ) unless exists $usedreasons{$_};
}
if ( @funref ) {
print STDERR "The following function codes were not referenced:\n";
foreach ( sort @funref ) {
print STDERR " $_\n";
}
}
if ( @runref ) {
print STDERR "The following reason codes were not referenced:\n";
foreach ( sort @runref ) {
print STDERR " $_\n";
}
}
}
die "Found $errors errors, quitting" if $errors;
# Update the state file
if ( $newstate ) {
open(OUT, ">$statefile.new")
|| die "Can't write $statefile.new, $!";
print OUT <<"EOF";
# Copyright 1999-$YEAR The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the OpenSSL license (the "License"). You may not use
# this file except in compliance with the License. You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html
EOF
print OUT "\n# Function codes\n";
foreach my $i ( sort keys %fcodes ) {
my $short = "$i:$fcodes{$i}:";
my $t = exists $strings{$i} ? $strings{$i} : "";
$t = "\\\n\t" . $t if length($short) + length($t) > 80;
print OUT "$short$t\n";
}
print OUT "\n#Reason codes\n";
foreach my $i ( sort keys %rcodes ) {
my $short = "$i:$rcodes{$i}:";
my $t = exists $strings{$i} ? "$strings{$i}" : "";
$t = "\\\n\t" . $t if length($short) + length($t) > 80;
print OUT "$short$t\n" if !exists $rextra{$i};
}
close(OUT);
if ( $skippedstate ) {
print "Skipped state, leaving update in $statefile.new";
} else {
rename "$statefile", "$statefile.old"
|| die "Can't backup $statefile to $statefile.old, $!";
rename "$statefile.new", "$statefile"
|| die "Can't rename $statefile to $statefile.new, $!";
}
}
exit;
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