bcheck.pl
上传用户:center1979
上传日期:2022-07-26
资源大小:50633k
文件大小:3k
- #!/usr/bin/perl -w
- use DB_File;
- use Fcntl ':flock';
- if (!defined($ARGV[0])) {
- print "usage: requires .class dump as parameter!n";
- exit;
- }
- sub bailout
- {
- untie %bcheckdb if(defined(%bcheckdb));
- if(defined(MYLOCK)) {
- flock MYLOCK, LOCK_UN;
- close(MYLOCK);
- }
- print @_;
- exit 5;
- }
- sub ask_user
- {
- my ($dbkey, $dbchunk) = @_;
- if (defined($ENV{"BCHECK_UPDATE"})) {
- $bcheckdb{$dbkey} = $dbchunk;
- return;
- }
- &bailout("BC problem detected") if (! -t STDIN);
- print "(I)gnore / (Q)uit / (U)pdate: ";
- my $key;
- while(defined(read STDIN, $key, 1)) {
- $key = lc($key);
- print "got: >$key<n";
- return if ($key eq 'i');
- &bailout("BC problem. aborted") if ($key eq 'q');
- if ($key eq 'u') {
- $bcheckdb{$dbkey} = $dbchunk;
- return;
- }
- print "n(I)gnore / (Q)uit / (U)pdate: ";
- }
- }
- sub diff_chunk($$)
- {
- my ($oldl, $newl) = @_;
- my @old = split /^/m, $oldl;
- my @new = split /^/m, $newl;
- my $haschanges = 0;
- my $max = $#old > $#new ? $#old : $#new;
- die "whoops. key different" if ($old[0] ne $new[0]);
- if ($#old != $#new) {
- warn ("Structural difference.n");
- print @old;
- print "-----------------------------------------------n";
- print @new;
- $haschanges = 1;
- return $haschanges;
- }
- print $old[0];
- my ($class) = ($old[0] =~ /^(?:Class |Vtable for )(S+)/);
- my $c = 1;
- while ($c < $max) {
- my ($o, $n) = ($old[$c], $new[$c]);
- chomp $o;
- chomp $n;
- $c++;
- next if ($o eq $n);
- if(defined($class) and $n =~ /^(d+s+)w+(::S+s*.*)$/) {
- next if ($n eq "$1$class$2");
- }
- $haschanges = 1;
- print "-$on+$nnn";
- }
- return $haschanges;
- }
- local $dblock = $ENV{"HOME"} . "/bcheck.lock";
- my $dbfile = $ENV{"HOME"} . "/bcheck.db";
- my $cdump = $ARGV[0];
- die "file $cdump is not readable: $!" if (! -f $cdump);
- # make sure the advisory lock exists
- open(MYLOCK, ">$dblock");
- print MYLOCK "";
- flock MYLOCK, LOCK_EX;
- tie %bcheckdb, 'DB_File', $dbfile;
- my $chunk = "";
- open (IN, "<$cdump") or die "cannot open $cdump: $!";
- while (<IN>) {
- chop;
- s/0x[0-9a-fA-F]+/0x......../g;
- s/base size=/size=/g;
- s/()s*$//g;
- s/base align=/align=/g;
- $chunk .= $_ . "n";
- if(/^s*$/) {
- my @lines = split /^/m, $chunk;
- my $key = $lines[0];
- chomp $key;
- if($key !~ /<anonymous struct>/ &&
- $key !~ /<anonymous union>/) {
- if(defined($bcheckdb{$key})) {
- my $dbversion = $bcheckdb{$key};
- if($dbversion ne $chunk) {
- &ask_user($key, $chunk) if(&diff_chunk($dbversion, $chunk));
- }
- }
- else {
- $bcheckdb{$key} = $chunk;
- print "NEW: $keyn";
- }
- }
- $chunk = "";
- next;
- }
- }
- close(IN);
- untie %bcheckdb;
- flock MYLOCK, LOCK_UN;
- close(MYLOCK);
- exit 0;