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Mini Shell
Mini Shell
package Socket;
use strict;
{ use v5.6.1; }
our $VERSION = '2.036';
# Still undocumented: SCM_*, SOMAXCONN, IOV_MAX, UIO_MAXIOV
use Carp;
use warnings::register;
require Exporter;
require XSLoader;
our @ISA = qw(Exporter);
# <@Nicholas> you can't change @EXPORT without breaking the implicit API
# Please put any new constants in @EXPORT_OK!
# List re-ordered to match documentation above. Try to keep the ordering
# consistent so it's easier to see which ones are or aren't documented.
our @EXPORT = qw(
PF_802 PF_AAL PF_APPLETALK PF_CCITT PF_CHAOS PF_CTF PF_DATAKIT
PF_DECnet PF_DLI PF_ECMA PF_GOSIP PF_HYLINK PF_IMPLINK PF_INET PF_INET6
PF_ISO PF_KEY PF_LAST PF_LAT PF_LINK PF_MAX PF_NBS PF_NIT PF_NS PF_OSI
PF_OSINET PF_PUP PF_ROUTE PF_SNA PF_UNIX PF_UNSPEC PF_USER PF_WAN
PF_X25
AF_802 AF_AAL AF_APPLETALK AF_CCITT AF_CHAOS AF_CTF AF_DATAKIT
AF_DECnet AF_DLI AF_ECMA AF_GOSIP AF_HYLINK AF_IMPLINK AF_INET AF_INET6
AF_ISO AF_KEY AF_LAST AF_LAT AF_LINK AF_MAX AF_NBS AF_NIT AF_NS AF_OSI
AF_OSINET AF_PUP AF_ROUTE AF_SNA AF_UNIX AF_UNSPEC AF_USER AF_WAN
AF_X25
SOCK_DGRAM SOCK_RAW SOCK_RDM SOCK_SEQPACKET SOCK_STREAM
SOL_SOCKET
SO_ACCEPTCONN SO_ATTACH_FILTER SO_BACKLOG SO_BROADCAST SO_CHAMELEON
SO_DEBUG SO_DETACH_FILTER SO_DGRAM_ERRIND SO_DOMAIN SO_DONTLINGER
SO_DONTROUTE SO_ERROR SO_FAMILY SO_KEEPALIVE SO_LINGER SO_OOBINLINE
SO_PASSCRED SO_PASSIFNAME SO_PEERCRED SO_PROTOCOL SO_PROTOTYPE
SO_RCVBUF SO_RCVLOWAT SO_RCVTIMEO SO_REUSEADDR SO_REUSEPORT
SO_SECURITY_AUTHENTICATION SO_SECURITY_ENCRYPTION_NETWORK
SO_SECURITY_ENCRYPTION_TRANSPORT SO_SNDBUF SO_SNDLOWAT SO_SNDTIMEO
SO_STATE SO_TYPE SO_USELOOPBACK SO_XOPEN SO_XSE
IP_HDRINCL IP_OPTIONS IP_RECVOPTS IP_RECVRETOPTS IP_RETOPTS IP_TOS
IP_TTL
MSG_BCAST MSG_BTAG MSG_CTLFLAGS MSG_CTLIGNORE MSG_CTRUNC MSG_DONTROUTE
MSG_DONTWAIT MSG_EOF MSG_EOR MSG_ERRQUEUE MSG_ETAG MSG_FASTOPEN MSG_FIN
MSG_MAXIOVLEN MSG_MCAST MSG_NOSIGNAL MSG_OOB MSG_PEEK MSG_PROXY MSG_RST
MSG_SYN MSG_TRUNC MSG_URG MSG_WAITALL MSG_WIRE
SHUT_RD SHUT_RDWR SHUT_WR
INADDR_ANY INADDR_BROADCAST INADDR_LOOPBACK INADDR_NONE
SCM_CONNECT SCM_CREDENTIALS SCM_CREDS SCM_RIGHTS SCM_TIMESTAMP
SOMAXCONN
IOV_MAX
UIO_MAXIOV
sockaddr_family
pack_sockaddr_in unpack_sockaddr_in sockaddr_in
pack_sockaddr_in6 unpack_sockaddr_in6 sockaddr_in6
pack_sockaddr_un unpack_sockaddr_un sockaddr_un
inet_aton inet_ntoa
);
# List re-ordered to match documentation above. Try to keep the ordering
# consistent so it's easier to see which ones are or aren't documented.
our @EXPORT_OK = qw(
CR LF CRLF $CR $LF $CRLF
SOCK_NONBLOCK SOCK_CLOEXEC
IP_ADD_MEMBERSHIP IP_ADD_SOURCE_MEMBERSHIP IP_BIND_ADDRESS_NO_PORT
IP_DROP_MEMBERSHIP IP_DROP_SOURCE_MEMBERSHIP IP_FREEBIND
IP_MULTICAST_ALL IP_MULTICAST_IF IP_MULTICAST_LOOP IP_MULTICAST_TTL
IP_MTU IP_MTU_DISCOVER IP_NODEFRAG IP_RECVERR IP_TRANSPARENT
IPPROTO_IP IPPROTO_IPV6 IPPROTO_RAW IPPROTO_ICMP IPPROTO_IGMP
IPPROTO_TCP IPPROTO_UDP IPPROTO_GRE IPPROTO_ESP IPPROTO_AH
IPPROTO_ICMPV6 IPPROTO_SCTP
IP_PMTUDISC_DO IP_PMTUDISC_DONT IP_PMTUDISC_PROBE IP_PMTUDISC_WANT
IPTOS_LOWDELAY IPTOS_THROUGHPUT IPTOS_RELIABILITY IPTOS_MINCOST
TCP_CONGESTION TCP_CONNECTIONTIMEOUT TCP_CORK TCP_DEFER_ACCEPT
TCP_FASTOPEN TCP_INFO TCP_INIT_CWND TCP_KEEPALIVE TCP_KEEPCNT
TCP_KEEPIDLE TCP_KEEPINTVL TCP_LINGER2 TCP_MAXRT TCP_MAXSEG
TCP_MD5SIG TCP_NODELAY TCP_NOOPT TCP_NOPUSH TCP_QUICKACK
TCP_SACK_ENABLE TCP_STDURG TCP_SYNCNT TCP_USER_TIMEOUT
TCP_WINDOW_CLAMP
IN6ADDR_ANY IN6ADDR_LOOPBACK
IPV6_ADDRFROM IPV6_ADD_MEMBERSHIP IPV6_DROP_MEMBERSHIP IPV6_JOIN_GROUP
IPV6_LEAVE_GROUP IPV6_MTU IPV6_MTU_DISCOVER IPV6_MULTICAST_HOPS
IPV6_MULTICAST_IF IPV6_MULTICAST_LOOP IPV6_RECVERR IPV6_ROUTER_ALERT
IPV6_UNICAST_HOPS IPV6_V6ONLY
SO_INCOMING_CPU SO_INCOMING_NAPI_ID SO_LOCK_FILTER SO_RCVBUFFORCE
SO_SNDBUFFORCE
pack_ip_mreq unpack_ip_mreq pack_ip_mreq_source unpack_ip_mreq_source
pack_ipv6_mreq unpack_ipv6_mreq
inet_pton inet_ntop
getaddrinfo getnameinfo
AI_ADDRCONFIG AI_ALL AI_CANONIDN AI_CANONNAME AI_IDN
AI_IDN_ALLOW_UNASSIGNED AI_IDN_USE_STD3_ASCII_RULES AI_NUMERICHOST
AI_NUMERICSERV AI_PASSIVE AI_V4MAPPED
NI_DGRAM NI_IDN NI_IDN_ALLOW_UNASSIGNED NI_IDN_USE_STD3_ASCII_RULES
NI_NAMEREQD NI_NOFQDN NI_NUMERICHOST NI_NUMERICSERV
NIx_NOHOST NIx_NOSERV
EAI_ADDRFAMILY EAI_AGAIN EAI_BADFLAGS EAI_BADHINTS EAI_FAIL EAI_FAMILY
EAI_NODATA EAI_NONAME EAI_PROTOCOL EAI_SERVICE EAI_SOCKTYPE EAI_SYSTEM
);
our %EXPORT_TAGS = (
crlf => [qw(CR LF CRLF $CR $LF $CRLF)],
addrinfo => [qw(getaddrinfo getnameinfo), grep m/^(?:AI|NI|NIx|EAI)_/, @EXPORT_OK],
all => [@EXPORT, @EXPORT_OK],
);
BEGIN {
sub CR () {"\015"}
sub LF () {"\012"}
sub CRLF () {"\015\012"}
# These are not gni() constants; they're extensions for the perl API
# The definitions in Socket.pm and Socket.xs must match
sub NIx_NOHOST() {1 << 0}
sub NIx_NOSERV() {1 << 1}
}
*CR = \CR();
*LF = \LF();
*CRLF = \CRLF();
# The four deprecated addrinfo constants
foreach my $name (qw( AI_IDN_ALLOW_UNASSIGNED AI_IDN_USE_STD3_ASCII_RULES NI_IDN_ALLOW_UNASSIGNED NI_IDN_USE_STD3_ASCII_RULES )) {
no strict 'refs';
*$name = sub {
croak "The addrinfo constant $name is deprecated";
};
}
sub sockaddr_in {
if (@_ == 6 && !wantarray) { # perl5.001m compat; use this && die
my($af, $port, @quad) = @_;
warnings::warn "6-ARG sockaddr_in call is deprecated"
if warnings::enabled();
pack_sockaddr_in($port, inet_aton(join('.', @quad)));
} elsif (wantarray) {
croak "usage: (port,iaddr) = sockaddr_in(sin_sv)" unless @_ == 1;
unpack_sockaddr_in(@_);
} else {
croak "usage: sin_sv = sockaddr_in(port,iaddr))" unless @_ == 2;
pack_sockaddr_in(@_);
}
}
sub sockaddr_in6 {
if (wantarray) {
croak "usage: (port,in6addr,scope_id,flowinfo) = sockaddr_in6(sin6_sv)" unless @_ == 1;
unpack_sockaddr_in6(@_);
}
else {
croak "usage: sin6_sv = sockaddr_in6(port,in6addr,[scope_id,[flowinfo]])" unless @_ >= 2 and @_ <= 4;
pack_sockaddr_in6(@_);
}
}
sub sockaddr_un {
if (wantarray) {
croak "usage: (filename) = sockaddr_un(sun_sv)" unless @_ == 1;
unpack_sockaddr_un(@_);
} else {
croak "usage: sun_sv = sockaddr_un(filename)" unless @_ == 1;
pack_sockaddr_un(@_);
}
}
XSLoader::load(__PACKAGE__, $VERSION);
my %errstr;
if( defined &getaddrinfo ) {
# These are not part of the API, nothing uses them, and deleting them
# reduces the size of %Socket:: by about 12K
delete $Socket::{fake_getaddrinfo};
delete $Socket::{fake_getnameinfo};
} else {
require Scalar::Util;
*getaddrinfo = \&fake_getaddrinfo;
*getnameinfo = \&fake_getnameinfo;
# These numbers borrowed from GNU libc's implementation, but since
# they're only used by our emulation, it doesn't matter if the real
# platform's values differ
my %constants = (
AI_PASSIVE => 1,
AI_CANONNAME => 2,
AI_NUMERICHOST => 4,
AI_V4MAPPED => 8,
AI_ALL => 16,
AI_ADDRCONFIG => 32,
# RFC 2553 doesn't define this but Linux does - lets be nice and
# provide it since we can
AI_NUMERICSERV => 1024,
EAI_BADFLAGS => -1,
EAI_NONAME => -2,
EAI_NODATA => -5,
EAI_FAMILY => -6,
EAI_SERVICE => -8,
NI_NUMERICHOST => 1,
NI_NUMERICSERV => 2,
NI_NOFQDN => 4,
NI_NAMEREQD => 8,
NI_DGRAM => 16,
# Constants we don't support. Export them, but croak if anyone tries to
# use them
AI_IDN => 64,
AI_CANONIDN => 128,
NI_IDN => 32,
# Error constants we'll never return, so it doesn't matter what value
# these have, nor that we don't provide strings for them
EAI_SYSTEM => -11,
EAI_BADHINTS => -1000,
EAI_PROTOCOL => -1001
);
foreach my $name ( keys %constants ) {
my $value = $constants{$name};
no strict 'refs';
defined &$name or *$name = sub () { $value };
}
%errstr = (
# These strings from RFC 2553
EAI_BADFLAGS() => "invalid value for ai_flags",
EAI_NONAME() => "nodename nor servname provided, or not known",
EAI_NODATA() => "no address associated with nodename",
EAI_FAMILY() => "ai_family not supported",
EAI_SERVICE() => "servname not supported for ai_socktype",
);
}
# The following functions are used if the system does not have a
# getaddrinfo(3) function in libc; and are used to emulate it for the AF_INET
# family
# Borrowed from Regexp::Common::net
my $REGEXP_IPv4_DECIMAL = qr/25[0-5]|2[0-4][0-9]|[0-1]?[0-9]{1,2}/;
my $REGEXP_IPv4_DOTTEDQUAD = qr/$REGEXP_IPv4_DECIMAL\.$REGEXP_IPv4_DECIMAL\.$REGEXP_IPv4_DECIMAL\.$REGEXP_IPv4_DECIMAL/;
sub fake_makeerr
{
my ( $errno ) = @_;
my $errstr = $errno == 0 ? "" : ( $errstr{$errno} || $errno );
return Scalar::Util::dualvar( $errno, $errstr );
}
sub fake_getaddrinfo
{
my ( $node, $service, $hints ) = @_;
$node = "" unless defined $node;
$service = "" unless defined $service;
my ( $family, $socktype, $protocol, $flags ) = @$hints{qw( family socktype protocol flags )};
$family ||= Socket::AF_INET(); # 0 == AF_UNSPEC, which we want too
$family == Socket::AF_INET() or return fake_makeerr( EAI_FAMILY() );
$socktype ||= 0;
$protocol ||= 0;
$flags ||= 0;
my $flag_passive = $flags & AI_PASSIVE(); $flags &= ~AI_PASSIVE();
my $flag_canonname = $flags & AI_CANONNAME(); $flags &= ~AI_CANONNAME();
my $flag_numerichost = $flags & AI_NUMERICHOST(); $flags &= ~AI_NUMERICHOST();
my $flag_numericserv = $flags & AI_NUMERICSERV(); $flags &= ~AI_NUMERICSERV();
# These constants don't apply to AF_INET-only lookups, so we might as well
# just ignore them. For AI_ADDRCONFIG we just presume the host has ability
# to talk AF_INET. If not we'd have to return no addresses at all. :)
$flags &= ~(AI_V4MAPPED()|AI_ALL()|AI_ADDRCONFIG());
$flags & (AI_IDN()|AI_CANONIDN()) and
croak "Socket::getaddrinfo() does not support IDN";
$flags == 0 or return fake_makeerr( EAI_BADFLAGS() );
$node eq "" and $service eq "" and return fake_makeerr( EAI_NONAME() );
my $canonname;
my @addrs;
if( $node ne "" ) {
return fake_makeerr( EAI_NONAME() ) if( $flag_numerichost and $node !~ m/^$REGEXP_IPv4_DOTTEDQUAD$/ );
( $canonname, undef, undef, undef, @addrs ) = gethostbyname( $node );
defined $canonname or return fake_makeerr( EAI_NONAME() );
undef $canonname unless $flag_canonname;
}
else {
$addrs[0] = $flag_passive ? Socket::inet_aton( "0.0.0.0" )
: Socket::inet_aton( "127.0.0.1" );
}
my @ports; # Actually ARRAYrefs of [ socktype, protocol, port ]
my $protname = "";
if( $protocol ) {
$protname = eval { getprotobynumber( $protocol ) };
}
if( $service ne "" and $service !~ m/^\d+$/ ) {
return fake_makeerr( EAI_NONAME() ) if( $flag_numericserv );
getservbyname( $service, $protname ) or return fake_makeerr( EAI_SERVICE() );
}
foreach my $this_socktype ( Socket::SOCK_STREAM(), Socket::SOCK_DGRAM(), Socket::SOCK_RAW() ) {
next if $socktype and $this_socktype != $socktype;
my $this_protname = "raw";
$this_socktype == Socket::SOCK_STREAM() and $this_protname = "tcp";
$this_socktype == Socket::SOCK_DGRAM() and $this_protname = "udp";
next if $protname and $this_protname ne $protname;
my $port;
if( $service ne "" ) {
if( $service =~ m/^\d+$/ ) {
$port = "$service";
}
else {
( undef, undef, $port, $this_protname ) = getservbyname( $service, $this_protname );
next unless defined $port;
}
}
else {
$port = 0;
}
push @ports, [ $this_socktype, eval { scalar getprotobyname( $this_protname ) } || 0, $port ];
}
my @ret;
foreach my $addr ( @addrs ) {
foreach my $portspec ( @ports ) {
my ( $socktype, $protocol, $port ) = @$portspec;
push @ret, {
family => $family,
socktype => $socktype,
protocol => $protocol,
addr => Socket::pack_sockaddr_in( $port, $addr ),
canonname => undef,
};
}
}
# Only supply canonname for the first result
if( defined $canonname ) {
$ret[0]->{canonname} = $canonname;
}
return ( fake_makeerr( 0 ), @ret );
}
sub fake_getnameinfo
{
my ( $addr, $flags, $xflags ) = @_;
my ( $port, $inetaddr );
eval { ( $port, $inetaddr ) = Socket::unpack_sockaddr_in( $addr ) }
or return fake_makeerr( EAI_FAMILY() );
my $family = Socket::AF_INET();
$flags ||= 0;
my $flag_numerichost = $flags & NI_NUMERICHOST(); $flags &= ~NI_NUMERICHOST();
my $flag_numericserv = $flags & NI_NUMERICSERV(); $flags &= ~NI_NUMERICSERV();
my $flag_nofqdn = $flags & NI_NOFQDN(); $flags &= ~NI_NOFQDN();
my $flag_namereqd = $flags & NI_NAMEREQD(); $flags &= ~NI_NAMEREQD();
my $flag_dgram = $flags & NI_DGRAM() ; $flags &= ~NI_DGRAM();
$flags & NI_IDN() and
croak "Socket::getnameinfo() does not support IDN";
$flags == 0 or return fake_makeerr( EAI_BADFLAGS() );
$xflags ||= 0;
my $node;
if( $xflags & NIx_NOHOST ) {
$node = undef;
}
elsif( $flag_numerichost ) {
$node = Socket::inet_ntoa( $inetaddr );
}
else {
$node = gethostbyaddr( $inetaddr, $family );
if( !defined $node ) {
return fake_makeerr( EAI_NONAME() ) if $flag_namereqd;
$node = Socket::inet_ntoa( $inetaddr );
}
elsif( $flag_nofqdn ) {
my ( $shortname ) = split m/\./, $node;
my ( $fqdn ) = gethostbyname $shortname;
$node = $shortname if defined $fqdn and $fqdn eq $node;
}
}
my $service;
if( $xflags & NIx_NOSERV ) {
$service = undef;
}
elsif( $flag_numericserv ) {
$service = "$port";
}
else {
my $protname = $flag_dgram ? "udp" : "";
$service = getservbyport( $port, $protname );
if( !defined $service ) {
$service = "$port";
}
}
return ( fake_makeerr( 0 ), $node, $service );
}
1;
Zerion Mini Shell 1.0