--- /dev/null
+#!/usr/bin/env perl
+#
+# Copyrifgr (c) 2011 The OpenSSL Project.
+#
+# The script embeds fingerprint into ELF executable object, either
+# application binary or shared library.
+
+######################################################################
+#
+# ELF symbol table parser by <appro@openssl.org>. The table entries
+# are extended with offset within executable file...
+#
+{ package ELF;
+ use FileHandle;
+
+ sub dup { my %copy=map {$_} @_; return \%copy; }
+
+ sub Load {
+ my $class = shift;
+ my $self = {};
+ my $FD = FileHandle->new(); # autoclose
+
+ bless $self,$class;
+
+ sysopen($FD,shift,0) or die "$!";
+ binmode($FD);
+
+ #################################################
+ # read and parse elf_ehdr.e_ident...
+ #
+ read($FD,my $elf,16) or die "$!";
+
+ my %e_ident;
+ @e_ident{magic,class,data,version,osabi,abiver,pad}=
+ unpack("a4C*",$elf);
+
+ die "not ELF file" if ($e_ident{magic} ne chr(0177)."ELF");
+
+ my $elf_bits = $e_ident{class}*32; # 32 or 64
+ my $big_endian = $e_ident{data}-1; # 0 or 1
+
+ if ($elf_bits==64) {
+ if (!(((1<<31)<<1) && $big_endian==(unpack("L",pack("N",1))==1))) {
+ die "ELF64 is supported only natively";
+ }
+ }
+
+ #################################################
+ # read and parse remainder of elf_ehdr...
+ #
+ read($FD,my $elfhdr,64) or die "$!";
+
+ my %elf_ehdr;
+ @elf_ehdr{e_type,e_machine,e_version,
+ e_entry,e_phoff,e_shoff,e_flags,e_ehsize,
+ e_phentsize,e_phnum,e_shentsize,e_shnum,e_shstrndx} =
+ $elf_bits==32 ?
+ unpack($big_endian?"nnN5n6":"vvV5v6",$elfhdr)
+ : unpack("SSLQ3LS6",$elfhdr);
+
+ # put aside e_machine in case one has to treat specific
+ # platforms differently, see EM_ constants in elf.h for
+ # assortment...
+ $self->{e_machine} = $elf_ehdr{e_machine};
+
+ #################################################
+ # read and parse elf_shdr table...
+ #
+ my ($i,$sz,$symtab_idx,$blob,$strings);
+
+ seek($FD,$elf_ehdr{e_shoff},0) or die "$!";
+ read($FD,$blob,$elf_ehdr{e_shentsize}*$elf_ehdr{e_shnum}) or die "$!";
+
+ my @sections;
+ my $elf_shdr_struct=($elf_bits==32?($big_endian?"N10":"V10"):"L2Q4L2Q2");
+ for ($sz=$elf_ehdr{e_shentsize},$i=0;$i<length($blob);$i+=$sz) {
+ my %elf_shdr;
+
+ @elf_shdr{sh_name,sh_type,sh_flags,
+ sh_addr,sh_offset,sh_size,
+ sh_link,sh_info,sh_addalign,sh_entsize} =
+ unpack($elf_shdr_struct,substr($blob,$i,$sz));
+
+ push(@sections,dup(%elf_shdr));
+
+ # note SHT_SYMTAB or SHT_DYNSYM for future reference
+ if ($elf_shdr{sh_type}==2 || $elf_shdr{sh_type}==11) {
+ $symtab_idx = $#sections;
+ }
+ }
+
+ # read strings table and map section names...
+ seek($FD,@sections[$elf_ehdr{e_shstrndx}]->{sh_offset},0) or die "$!";
+ read($FD,$strings,@sections[$elf_ehdr{e_shstrndx}]->{sh_size}) or die "$!";
+ for (@sections) {
+ $_->{sh_name}=(split(chr(0),substr($strings,$_->{sh_name},64)))[0];
+ }
+
+ #################################################
+ # read symbol strings table...
+ #
+ $i=@sections[$symtab_idx]->{sh_link};
+ seek($FD,@sections[$i]->{sh_offset},0) or die "$!";
+ read($FD,$strings,@sections[$i]->{sh_size}) or die "$!";
+
+ #################################################
+ # read and parse elf_sym table...
+ #
+ seek($FD,@sections[$symtab_idx]->{sh_offset},0) or die "$!";
+ read($FD,my $blob,@sections[$symtab_idx]->{sh_size}) or die "$!";
+
+ for ($sz=@sections[$symtab_idx]->{sh_entsize},$i=0;$i<length($blob);$i+=$sz) {
+ my %elf_sym;
+
+ if ($elf_bits==32) {
+ @elf_sym{st_name,st_value,st_size,st_info,st_other,st_shndx} =
+ unpack($big_endian?"N3CCn":"V3CCv",substr($blob,$i,$sz));
+ } else {
+ @elf_sym{st_name,st_info,st_other,st_shndx,st_value,st_size} =
+ unpack("LCCSQQ",substr($blob,$i,$sz));
+ }
+
+ my $st_type = $elf_sym{st_info}&0xf;
+ my $st_bind = $elf_sym{st_info}>>4;
+ my $st_secn = $elf_sym{st_shndx};
+ my $name;
+ # (STT_OBJECT || STT_FUNC)
+ if ($st_bind<3 && ($st_type==1 || $st_type==2)
+ && $st_secn <= $#sections # sane st_shndx
+ && @sections[$st_secn]->{sh_type} # not SHN_UNDEF
+ && ($name=(split(chr(0),substr($strings,$elf_sym{st_name},128)))[0])
+ ) {
+ # synthesize st_offset, ...
+ $elf_sym{st_offset} = $elf_sym{st_value}
+ - @sections[$st_secn]->{sh_addr}
+ + @sections[$st_secn]->{sh_offset};
+ $elf_sym{st_name} = $name;
+ $elf_sym{st_section} = @sections[$st_secn]->{sh_name};
+ # ... and add to lookup table
+ $self->{symbols}{$name} = dup(%elf_sym);
+ }
+ }
+
+ return $self;
+ }
+
+ sub Lookup {
+ my $self = shift;
+ my $name = shift;
+ return $self->{symbols}{$name};
+ }
+
+ sub Traverse {
+ my $self = shift;
+ my $code = shift;
+
+ if (ref($code) eq 'CODE') {
+ for (keys(%{$self->{symbols}})) { &$code($self->{symbols}{$_}); }
+ }
+ }
+}
+
+######################################################################
+#
+# SHA1 and HMAC in Perl by <appro@openssl.org>.
+#
+{ package SHA1;
+ use integer;
+
+ {
+ ################################### SHA1 block code generator
+ my @V = ('$A','$B','$C','$D','$E');
+ my $i;
+
+ sub XUpdate {
+ my $ret;
+ $ret="(\$T=\$W[($i-16)%16]^\$W[($i-14)%16]^\$W[($i-8)%16]^\$W[($i-3)%16],\n\t";
+ if ((1<<31)<<1) {
+ $ret.=" \$W[$i%16]=((\$T<<1)|(\$T>>31))&0xffffffff)\n\t ";
+ } else {
+ $ret.=" \$W[$i%16]=(\$T<<1)|((\$T>>31)&1))\n\t ";
+ }
+ }
+ sub tail {
+ my ($a,$b,$c,$d,$e)=@V;
+ my $ret;
+ if ((1<<31)<<1) {
+ $ret.="(($a<<5)|($a>>27));\n\t";
+ $ret.="$b=($b<<30)|($b>>2); $e&=0xffffffff; #$b&=0xffffffff;\n\t";
+ } else {
+ $ret.="(($a<<5)|($a>>27)&0x1f);\n\t";
+ $ret.="$b=($b<<30)|($b>>2)&0x3fffffff;\n\t";
+ }
+ $ret;
+ }
+ sub BODY_00_15 {
+ my ($a,$b,$c,$d,$e)=@V;
+ "$e+=\$W[$i]+0x5a827999+((($c^$d)&$b)^$d)+".tail();
+ }
+ sub BODY_16_19 {
+ my ($a,$b,$c,$d,$e)=@V;
+ "$e+=".XUpdate()."+0x5a827999+((($c^$d)&$b)^$d)+".tail();
+ }
+ sub BODY_20_39 {
+ my ($a,$b,$c,$d,$e)=@V;
+ "$e+=".XUpdate()."+0x6ed9eba1+($b^$c^$d)+".tail();
+ }
+ sub BODY_40_59 {
+ my ($a,$b,$c,$d,$e)=@V;
+ "$e+=".XUpdate()."+0x8f1bbcdc+(($b&$c)|(($b|$c)&$d))+".tail();
+ }
+ sub BODY_60_79 {
+ my ($a,$b,$c,$d,$e)=@V;
+ "$e+=".XUpdate()."+0xca62c1d6+($b^$c^$d)+".tail();
+ }
+
+ my $sha1_impl =
+ 'sub block {
+ my $self = @_[0];
+ my @W = unpack("N16",@_[1]);
+ my ($A,$B,$C,$D,$E,$T) = @{$self->{H}};
+ ';
+
+ $sha1_impl.='
+ $A &= 0xffffffff;
+ $B &= 0xffffffff;
+ ' if ((1<<31)<<1);
+
+ for($i=0;$i<16;$i++){ $sha1_impl.=BODY_00_15(); unshift(@V,pop(@V)); }
+ for(;$i<20;$i++) { $sha1_impl.=BODY_16_19(); unshift(@V,pop(@V)); }
+ for(;$i<40;$i++) { $sha1_impl.=BODY_20_39(); unshift(@V,pop(@V)); }
+ for(;$i<60;$i++) { $sha1_impl.=BODY_40_59(); unshift(@V,pop(@V)); }
+ for(;$i<80;$i++) { $sha1_impl.=BODY_60_79(); unshift(@V,pop(@V)); }
+
+ $sha1_impl.='
+ $self->{H}[0]+=$A; $self->{H}[1]+=$B; $self->{H}[2]+=$C;
+ $self->{H}[3]+=$D; $self->{H}[4]+=$E; }';
+
+ #print $sha1_impl,"\n";
+ eval($sha1_impl); # generate code
+ }
+
+ sub Init {
+ my $class = shift; # multiple instances...
+ my $self = {};
+
+ bless $self,$class;
+ $self->{H} = [0x67452301,0xefcdab89,0x98badcfe,0x10325476,0xc3d2e1f0];
+ $self->{N} = 0;
+ return $self;
+ }
+
+ sub Update {
+ my $self = shift;
+ my $msg;
+
+ foreach $msg (@_) {
+ my $len = length($msg);
+ my $num = length($self->{buf});
+ my $off = 0;
+
+ $self->{N} += $len;
+
+ if (($num+$len)<64)
+ { $self->{buf} .= $msg; next; }
+ elsif ($num)
+ { $self->{buf} .= substr($msg,0,($off=64-$num));
+ $self->block($self->{buf});
+ }
+
+ while(($off+64) <= $len)
+ { $self->block(substr($msg,$off,64));
+ $off += 64;
+ }
+
+ $self->{buf} = substr($msg,$off);
+ }
+ return $self;
+ }
+
+ sub Final {
+ my $self = shift;
+ my $num = length($self->{buf});
+
+ $self->{buf} .= chr(0x80); $num++;
+ if ($num>56)
+ { $self->{buf} .= chr(0)x(64-$num);
+ $self->block($self->{buf});
+ $self->{buf}=undef;
+ $num=0;
+ }
+ $self->{buf} .= chr(0)x(56-$num);
+ $self->{buf} .= pack("N2",($self->{N}>>29)&0x7,$self->{N}<<3);
+ $self->block($self->{buf});
+
+ return pack("N*",@{$self->{H}});
+ }
+
+ sub Selftest {
+ my $hash;
+
+ $hash=SHA1->Init()->Update('abc')->Final();
+ die "SHA1 test#1" if (unpack("H*",$hash) ne 'a9993e364706816aba3e25717850c26c9cd0d89d');
+
+ $hash=SHA1->Init()->Update('abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq')->Final();
+ die "SHA1 test#2" if (unpack("H*",$hash) ne '84983e441c3bd26ebaae4aa1f95129e5e54670f1');
+
+ #$hash=SHA1->Init()->Update('a'x1000000)->Final();
+ #die "SHA1 test#3" if (unpack("H*",$hash) ne '34aa973cd4c4daa4f61eeb2bdbad27316534016f');
+ }
+}
+
+{ package HMAC;
+
+ sub Init {
+ my $class = shift;
+ my $key = shift;
+ my $self = {};
+
+ bless $self,$class;
+
+ if (length($key)>64) {
+ $key = SHA1->Init()->Update($key)->Final();
+ }
+ $key .= chr(0x00)x(64-length($key));
+
+ my @ikey = map($_^=0x36,unpack("C*",$key));
+ ($self->{hash} = SHA1->Init())->Update(pack("C*",@ikey));
+ $self->{okey} = pack("C*",map($_^=0x36^0x5c,@ikey));
+
+ return $self;
+ }
+
+ sub Update {
+ my $self = shift;
+ $self->{hash}->Update(@_);
+ return $self;
+ }
+
+ sub Final {
+ my $self = shift;
+ my $ihash = $self->{hash}->Final();
+ return SHA1->Init()->Update($self->{okey},$ihash)->Final();
+ }
+
+ sub Selftest {
+ my $hmac;
+
+ $hmac = HMAC->Init('0123456789:;<=>?@ABC')->Update('Sample #2')->Final();
+ die "HMAC test" if (unpack("H*",$hmac) ne '0922d3405faa3d194f82a45830737d5cc6c75d24');
+ }
+}
+
+######################################################################
+#
+# main()
+#
+my $legacy_mode;
+
+if ($ARGV<0 || ($#ARGV>0 && !($legacy_mode=(@ARGV[0] =~ /^\-(dso|exe)$/)))) {
+ print STDERR "usage: $0 [-dso|-exe] elfbinary\n";
+ exit(1);
+}
+
+$exe = ELF->Load(@ARGV[$#ARGV]);
+
+$FIPS_text_start = $exe->Lookup("FIPS_text_start") or die;
+$FIPS_text_end = $exe->Lookup("FIPS_text_end") or die;
+$FIPS_rodata_start = $exe->Lookup("FIPS_rodata_start") or die;
+$FIPS_rodata_end = $exe->Lookup("FIPS_rodata_end") or die;
+$FIPS_signature = $exe->Lookup("FIPS_signature") or die;
+
+if (!$legacy_mode) {
+ $FIPS_text_start = $exe->Lookup("FIPS_text_startX");
+ $FIPS_text_end = $exe->Lookup("FIPS_text_endX");
+
+ if (!$FIPS_text_start || !$FIPS_text_end) {
+ print STDERR "@ARGV[$#ARGV] is not cross-compiler aware.\n";
+ exit(1);
+ }
+
+ $FINGERPRINT_ascii_value
+ = $exe->Lookup("FINGERPRINT_ascii_value") or die;
+}
+
+sysopen(FD,@ARGV[$#ARGV],$legacy_mode?0:2) or die "$!"; # 2 is read/write
+binmode(FD);
+
+sub HMAC_Update {
+ my ($hmac,$off,$len) = @_;
+ my $blob;
+
+ seek(FD,$off,0) or die "$!";
+ read(FD,$blob,$len) or die "$!";
+ $$hmac->Update($blob);
+}
+
+# fips/fips.c:FIPS_incore_fingerprint's Perl twin
+#
+sub FIPS_incore_fingerprint {
+ my $p1 = $FIPS_text_start->{st_offset};
+ my $p2 = $FIPS_text_end->{st_offset};
+ my $p3 = $FIPS_rodata_start->{st_offset};
+ my $p4 = $FIPS_rodata_end->{st_offset};
+ my $sig = $FIPS_signature->{st_offset};
+ my $ctx = HMAC->Init("etaonrishdlcupfm");
+
+ # detect overlapping regions
+ if ($p1<=$p3 && $p2>=$p3) {
+ $p3 = $p1; $p4 = $p2>$p4?$p2:$p4; $p1 = 0; $p2 = 0;
+ } elsif ($p3<=$p1 && $p4>=$p1) {
+ $p3 = $p3; $p4 = $p2>$p4?$p2:$p4; $p1 = 0; $p2 = 0;
+ }
+
+ if ($p1) {
+ HMAC_Update (\$ctx,$p1,$p2-$p1);
+ }
+
+ if ($sig>=$p3 && $sig<$p4) {
+ # "punch" hole
+ HMAC_Update(\$ctx,$p3,$sig-$p3);
+ $p3 = $sig+20;
+ HMAC_Update(\$ctx,$p3,$p4-$p3);
+ } else {
+ HMAC_Update(\$ctx,$p3,$p4-$p3);
+ }
+
+ return $ctx->Final();
+}
+
+$fingerprint = FIPS_incore_fingerprint();
+
+if ($legacy_mode) {
+ print unpack("H*",$fingerprint);
+} else {
+ seek(FD,$FINGERPRINT_ascii_value->{st_offset},0) or die "$!";
+ print FD unpack("H*",$fingerprint) or die "$!";
+}
+
+close (FD);
projects / oweals / openssl.git / commitdiff