| Subject: | Use of uninitialized value in subroutine entry in Socket.pm |
Running the attached file along with the attached server produces the error:
Use of uninitialized value in subroutine entry at
/usr/lib/perl/5.10/Socket.pm line 214.
Bad arg length for Socket::pack_sockaddr_in, length is 0, should be 4 at
/usr/lib/perl/5.10/Socket.pm line 214.
jmusbach@user-machine-6:~$ perl -v
This is perl, v5.10.1 (*) built for i486-linux-gnu-thread-multi
(with 51 registered patches, see perl -V for more detail)
jmusbach@user-machine-6:~$ perl -V
Summary of my perl5 (revision 5 version 10 subversion 1) configuration:
Platform:
osname=linux, osvers=2.6.32.27-dsa-ia32,
archname=i486-linux-gnu-thread-multi
uname='linux murphy 2.6.32.27-dsa-ia32 #1 smp mon dec 13 11:15:55
cet 2010 i686 gnulinux '
config_args='-Dusethreads -Duselargefiles -Dccflags=-DDEBIAN
-Dcccdlflags=-fPIC -Darchname=i486-linux-gnu -Dprefix=/usr
-Dprivlib=/usr/share/perl/5.10 -Darchlib=/usr/lib/perl/5.10
-Dvendorprefix=/usr -Dvendorlib=/usr/share/perl5
-Dvendorarch=/usr/lib/perl5 -Dsiteprefix=/usr/local
-Dsitelib=/usr/local/share/perl/5.10.1
-Dsitearch=/usr/local/lib/perl/5.10.1 -Dman1dir=/usr/share/man/man1
-Dman3dir=/usr/share/man/man3 -Dsiteman1dir=/usr/local/man/man1
-Dsiteman3dir=/usr/local/man/man3 -Dman1ext=1 -Dman3ext=3perl
-Dpager=/usr/bin/sensible-pager -Uafs -Ud_csh -Ud_ualarm -Uusesfio
-Uusenm -DDEBUGGING=-g -Doptimize=-O2 -Duseshrplib
-Dlibperl=libperl.so.5.10.1 -Dd_dosuid -des'
hint=recommended, useposix=true, d_sigaction=define
useithreads=define, usemultiplicity=define
useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
use64bitint=undef, use64bitall=undef, uselongdouble=undef
usemymalloc=n, bincompat5005=undef
Compiler:
cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN
-fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
optimize='-O2 -g',
cppflags='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fno-strict-aliasing
-pipe -fstack-protector -I/usr/local/include'
ccversion='', gccversion='4.4.5', gccosandvers=''
intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t',
lseeksize=8
alignbytes=4, prototype=define
Linker and Libraries:
ld='cc', ldflags =' -fstack-protector -L/usr/local/lib'
libpth=/usr/local/lib /lib /usr/lib /usr/lib64
libs=-lgdbm -lgdbm_compat -ldb -ldl -lm -lpthread -lc -lcrypt
perllibs=-ldl -lm -lpthread -lc -lcrypt
libc=/lib/libc-2.11.2.so, so=so, useshrplib=true,
libperl=libperl.so.5.10.1
gnulibc_version='2.11.2'
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
cccdlflags='-fPIC', lddlflags='-shared -O2 -g -L/usr/local/lib
-fstack-protector'
Characteristics of this binary (from libperl):
Compile-time options: MULTIPLICITY PERL_DONT_CREATE_GVSV
PERL_IMPLICIT_CONTEXT PERL_MALLOC_WRAP USE_ITHREADS
USE_LARGE_FILES USE_PERLIO USE_REENTRANT_API
Locally applied patches:
DEBPKG:debian/arm_thread_stress_timeout - http://bugs.debian.org/501970
Raise the timeout of ext/threads/shared/t/stress.t to accommodate slower
build hosts
DEBPKG:debian/cpan_config_path - Set location of CPAN::Config to
/etc/perl as /usr may not be writable.
DEBPKG:debian/cpan_definstalldirs - Provide a sensible INSTALLDIRS
default for modules installed from CPAN.
DEBPKG:debian/db_file_ver - http://bugs.debian.org/340047 Remove overly
restrictive DB_File version check.
DEBPKG:debian/doc_info - Replace generic man(1) instructions with
Debian-specific information.
DEBPKG:debian/enc2xs_inc - http://bugs.debian.org/290336 Tweak enc2xs
to follow symlinks and ignore missing @INC directories.
DEBPKG:debian/errno_ver - http://bugs.debian.org/343351 Remove Errno
version check due to upgrade problems with long-running processes.
DEBPKG:debian/extutils_hacks - Various debian-specific ExtUtils changes
DEBPKG:debian/fakeroot - Postpone LD_LIBRARY_PATH evaluation to the
binary targets.
DEBPKG:debian/instmodsh_doc - Debian policy doesn't install .packlist
files for core or vendor.
DEBPKG:debian/ld_run_path - Remove standard libs from LD_RUN_PATH as
per Debian policy.
DEBPKG:debian/libnet_config_path - Set location of libnet.cfg to
/etc/perl/Net as /usr may not be writable.
DEBPKG:debian/m68k_thread_stress - http://bugs.debian.org/495826
Disable some threads tests on m68k for now due to missing TLS.
DEBPKG:debian/mod_paths - Tweak @INC ordering for Debian
DEBPKG:debian/module_build_man_extensions -
http://bugs.debian.org/479460 Adjust Module::Build manual page
extensions for the Debian Perl policy
DEBPKG:debian/perl_synopsis - http://bugs.debian.org/278323 Rearrange
perl.pod
DEBPKG:debian/prune_libs - http://bugs.debian.org/128355 Prune the list
of libraries wanted to what we actually need.
DEBPKG:debian/use_gdbm - Explicitly link against -lgdbm_compat in
ODBM_File/NDBM_File.
DEBPKG:fixes/assorted_docs - http://bugs.debian.org/443733 [384f06a]
Math::BigInt::CalcEmu documentation grammar fix
DEBPKG:fixes/net_smtp_docs - http://bugs.debian.org/100195 [rt.cpan.org
#36038] Document the Net::SMTP 'Port' option
DEBPKG:fixes/processPL - http://bugs.debian.org/357264 [rt.cpan.org
#17224] Always use PERLRUNINST when building perl modules.
DEBPKG:debian/perlivp - http://bugs.debian.org/510895 Make perlivp skip
include directories in /usr/local
DEBPKG:fixes/pod2man-index-backslash - http://bugs.debian.org/521256
Escape backslashes in .IX entries
DEBPKG:debian/disable-zlib-bundling - Disable zlib bundling in
Compress::Raw::Zlib
DEBPKG:fixes/kfreebsd_cppsymbols - http://bugs.debian.org/533098
[3b910a0] Add gcc predefined macros to $Config{cppsymbols} on GNU/kFreeBSD.
DEBPKG:debian/cpanplus_definstalldirs - http://bugs.debian.org/533707
Configure CPANPLUS to use the site directories by default.
DEBPKG:debian/cpanplus_config_path - Save local versions of
CPANPLUS::Config::System into /etc/perl.
DEBPKG:fixes/kfreebsd-filecopy-pipes - http://bugs.debian.org/537555
[16f708c] Fix File::Copy::copy with pipes on GNU/kFreeBSD
DEBPKG:fixes/anon-tmpfile-dir - http://bugs.debian.org/528544 [perl
#66452] Honor TMPDIR when open()ing an anonymous temporary file
DEBPKG:fixes/abstract-sockets - http://bugs.debian.org/329291 [89904c0]
Add support for Abstract namespace sockets.
DEBPKG:fixes/hurd_cppsymbols - http://bugs.debian.org/544307 [eeb92b7]
Add gcc predefined macros to $Config{cppsymbols} on GNU/Hurd.
DEBPKG:fixes/autodie-flock - http://bugs.debian.org/543731 Allow for
flock returning EAGAIN instead of EWOULDBLOCK on linux/parisc
DEBPKG:fixes/archive-tar-instance-error - http://bugs.debian.org/539355
[rt.cpan.org #48879] Separate Archive::Tar instance error strings from
each other
DEBPKG:fixes/positive-gpos - http://bugs.debian.org/545234 [perl
#69056] [c584a96] Fix \G crash on first match
DEBPKG:debian/devel-ppport-ia64-optim - http://bugs.debian.org/548943
Work around an ICE on ia64
DEBPKG:fixes/trie-logic-match - http://bugs.debian.org/552291 [perl
#69973] [0abd0d7] Fix a DoS in Unicode processing [CVE-2009-3626]
DEBPKG:fixes/hppa-thread-eagain - http://bugs.debian.org/554218 make
the threads-shared test suite more robust, fixing failures on hppa
DEBPKG:fixes/crash-on-undefined-destroy - http://bugs.debian.org/564074
[perl #71952] [1f15e67] Fix a NULL pointer dereference when looking for
a DESTROY method
DEBPKG:fixes/tainted-errno - http://bugs.debian.org/574129 [perl
#61976] [be1cf43] fix an errno stringification bug in taint mode
DEBPKG:fixes/safe-upgrade - http://bugs.debian.org/582978 Upgrade
Safe.pm to 2.25, fixing CVE-2010-1974
DEBPKG:fixes/tell-crash - http://bugs.debian.org/578577 [f4817f3] Fix a
tell() crash on bad arguments.
DEBPKG:fixes/format-write-crash - http://bugs.debian.org/579537 [perl
#22977] [421f30e] Fix a crash in format/write
DEBPKG:fixes/arm-alignment - http://bugs.debian.org/289884 [f1c7503]
Prevent gcc from optimizing the alignment test away on armel
DEBPKG:fixes/fcgi-test - Fix a failure in CGI/t/fast.t when FCGI is
installed
DEBPKG:fixes/hurd-ccflags - http://bugs.debian.org/587901 Make
hints/gnu.sh append to $ccflags rather than overriding them
DEBPKG:debian/squelch-locale-warnings - http://bugs.debian.org/508764
Squelch locale warnings in Debian package maintainer scripts
DEBPKG:fixes/lc-numeric-docs - http://bugs.debian.org/379329 [perl
#78452] [903eb63] LC_NUMERIC documentation fixes
DEBPKG:fixes/lc-numeric-sprintf - http://bugs.debian.org/601549 [perl
#78632] [b3fd614] Fix sprintf not to ignore LC_NUMERIC with constants
DEBPKG:fixes/concat-stack-corruption - http://bugs.debian.org/596105
[perl #78674] [e3393f5] Fix stack pointer corruption in pp_concat() with
'use encoding'
DEBPKG:fixes/cgi-multiline-header - http://bugs.debian.org/606995
[CVE-2010-2761 CVE-2010-4410 CVE-2010-4411] CGI.pm MIME boundary and
multiline header vulnerabilities
DEBPKG:patchlevel - http://bugs.debian.org/567489 List packaged patches
for 5.10.1-17 in patchlevel.h
Built under linux
Compiled at Jan 7 2011 13:01:58
@INC:
/etc/perl
/usr/local/lib/perl/5.10.1
/usr/local/share/perl/5.10.1
/usr/lib/perl5
/usr/share/perl5
/usr/lib/perl/5.10
/usr/share/perl/5.10
/usr/local/lib/site_perl
.
| Subject: | server1.pl |
#!/usr/bin/perl -w
# server1.pl - a simple server
use strict;
use Socket;
# use port 7890 as default
my $port = shift || 7890;
my $proto = getprotobyname('tcp');
# create a socket, make it reusable
socket(SERVER, PF_INET, SOCK_STREAM, $proto)
or die "socket: $!";
setsockopt(SERVER, SOL_SOCKET, SO_REUSEADDR, 1)
or die "setsock: $!";
# grab a port on this machine
my $paddr = sockaddr_in($port, INADDR_ANY);
# bind to a port, then listen
bind(SERVER, $paddr) or die "bind: $!";
listen(SERVER, SOMAXCONN) or die "listen: $!";
print "SERVER started on port $port\n";
# for each connection...
my $client_addr;
while ($client_addr = accept(CLIENT, SERVER)) {
# find out who connected
my ($client_port, $client_ip) =
sockaddr_in($client_addr);
my $client_ipnum = inet_ntoa($client_ip);
my $client_host =
gethostbyaddr($client_ip, AF_INET);
# tell who connected
print "got a connection from: $client_host",
" [$client_ipnum]\n";
# send them a message, close connection
print CLIENT "Hello from the server: ",
close CLIENT;
}
| Subject: | client1.pl |
#! /usr/bin/perl -w
# client1.pl - a simple client
use strict;
use Socket;
# initialize host and port
my $host = shift || 'server.onsight.com';
my $port = shift || 7890;
my $proto = getprotobyname('tcp');
# get the port address
my $iaddr = inet_aton($host);
my $paddr = sockaddr_in($port, $iaddr);
# create the socket, connect to the port
socket(SOCKET, PF_INET, SOCK_STREAM, $proto)
or die "socket: $!";
connect(SOCKET, $paddr) or die "connect: $!";
while (<SOCKET>) {
print;
}
close SOCKET or die "close: $!";