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#!/usr/bin/env perl
###############################################################################
#
# Written by Igor Ljubuncic (igor.ljubuncic@intel.com)
# Yuval Nissan (yuval.nissan@intel.com)
#
# Version 1.0 on Mar 29, 2011
#
# This program performs recursive ldd checks for binaries and libraries
# It recurses through entire ldd tree for every listed binary and library
# It completes when no matches found in the current branch
# Same limitations to standard ldd apply
# ldd cannot check libraries with no permissions
#
###############################################################################
# /*
#
# This file is provided under a dual BSD/GPLv2 license. When using or
# redistributing this file, you may do so under either license.
#
# GPL LICENSE SUMMARY
#
# Copyright(c) 2011 Intel Corporation. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of version 2 of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
# The full GNU General Public License is included in this distribution
# in the file called LICENSE.GPL.
#
# Contact Information:
# Igor Ljubuncic, igor.ljubuncic@intel.com
# P.O.B 1659, MATAM, 31015 Haifa, Israel
#
# BSD LICENSE
#
# Copyright(c) 2011 Intel Corporation. All rights reserved.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Intel Corporation nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# */
use strict;
use Data::Dumper;
use Getopt::Long;
# global variables
# ----------------
my $result;
my @inputs = ();
my $helpoption=0;
my $debug=0;
my $verbose=0;
my $sep;
my $print_vars;
my $uniq;
my %uniq;
#############################################
#############################################
### ###
### FUNCTION MAIN ###
### ###
#############################################
#############################################
GetOptions(
'h|help+' => \$helpoption,
'debug+' => \$verbose,
't=s' => \$sep,
'l' => \$print_vars,
'uniq' => \$uniq
);
if ($verbose==1) {
# Print messages for debug purposes
$debug = 1;
}
if (($helpoption==1) || ($ARGV[0] eq "")) {
print "\nRecursive ldd v1.00\n";
print "Written by Igor Ljubuncic (igor.ljubuncic\@intel.com)\n";
print "Written by Yuval Nissan (yuval.nissan\@intel.com)\n\n";
print "Usage mode:\n\n";
print "-d\t\tverbose output\n";
print "-h|help\t\tprint help\n";
print "-t\t\tdelimiter\n";
print "-l\t\tprint env. variables\n";
print "-uniq\t\tprint unique values only\n\n";
exit 0;
}
$sep ||= "\t";
push @inputs, @ARGV;
if($print_vars) {
print "ldd output can be affected by:\n";
print "\$LD_LIBRARY_PATH = '".$ENV{LD_LIBRARY_PATH}."'\n";
print "\$LD_PRELOAD = '".$ENV{LD_PRELOAD}."'\n\n";
}
&recurseLibs($inputs[0], 0);
delete $uniq{$inputs[0]};
print join("\n", keys(%uniq))."\n" if $uniq;
exit 0;
##############################
##############################
## ##
## FUNCTIONS ##
## ##
##############################
##############################
sub recurseLibs
{
my $filename=shift;
my $depth = shift;
print "Working on file: $filename\n" if $debug;
print "$sep"x$depth if not $uniq;
++$depth;
return if $uniq{$filename} and $uniq;
$uniq{$filename} = 1;
print "$filename\n" if not $uniq;
chomp(my @libraries = `/usr/bin/ldd $filename`);
print "Libraries:\n@libraries\n" if $debug;
foreach my $line (@libraries) {
next if not $line;
$line =~ s/^\s+//g;
$line =~ s/\s+$//g;
# If static or else
if (($line =~ /statically linked/) or ($line =~ /not a dynamic executable/)) {
return;
}
elsif($line =~ /not found/) {
print "$sep"x$depth if not $uniq;
print "$line\n" if not $uniq;
$uniq{$line} = 1;
next;
}
# Split and recurse on libraries (third value is the lib path):
my @newlibs = split(/\s+/,$line);
print Dumper(\@newlibs) if $debug;
# Skip if no mapped or directly linked
# Sane output comes with four elements
if (scalar(@newlibs) < 4) {
print "$sep"x$depth if not $uniq;
print $newlibs[0]."\n" if not $uniq;
$uniq{$newlibs[0]} = 1;
next;
}
print "\nI'm gonna enter recursion with $newlibs[2].\n\n" if $debug;
&recurseLibs($newlibs[2], $depth);
}
return;
}
__END__