--- /dev/null
+#!/usr/bin/perl
+
+# By Simon Tatham
+
+require 5.002;
+use Socket;
+use FileHandle;
+
+$verbose=1, shift @ARGV if $ARGV[0] eq "-v";
+
+die "usage: nntpid messageid\n" if !defined $ARGV[0];
+$mid = $ARGV[0];
+$mid =~ s/^<//;
+$mid =~ s/>$//;
+$mid = "<$mid>";
+
+$ns=$ENV{'NNTPSERVER'};
+if (!defined $ns or !length $ns) {
+ $ns = `cat /etc/nntpserver`;
+ chomp($ns);
+}
+$port = (getservbyname("nntp", "tcp"))[2];
+$ns = inet_aton($ns);
+$proto = getprotobyname("tcp");
+$paddr = sockaddr_in($port, $ns);
+
+socket(S,PF_INET,SOCK_STREAM,$proto) or die "socket: $!";
+connect(S,$paddr) or die "connect: $!";
+
+S->autoflush(1);
+
+&getline;
+$code =~ /^2\d\d/ or die "no initial greeting from server\n";
+
+&docmd("MODE READER");
+# some servers require a GROUP before an ARTICLE command
+&docmd("GROUP misc.misc");
+&docmd("ARTICLE $mid");
+while (1) {
+ &getline;
+ s/[\r\n]//g;
+ last if /^\.$/;
+ s/^\.//;
+ print STDOUT "$_\n";
+}
+&docmd("QUIT");
+close S;
+
+sub putline {
+ my ($line) = @_;
+ print STDERR ">>> $line\n" if $verbose;
+ print S "$line\r\n";
+}
+
+sub getline {
+ $_ = <S>;
+ s/[\r\n]*$//s;
+ $code = substr($_,0,3);
+ print STDERR "<<< $_\n" if $verbose;
+}
+
+sub docmd {
+ my ($cmd) = @_;
+ while (1) {
+ &putline($cmd);
+ &getline;
+ if ($code eq "480") { &auth; } else { last; }
+ }
+ $code =~ /^2\d\d/ or die "failed on `$cmd':\n$_\n";
+}
+
+sub auth {
+ # Authentication.
+ if ($ENV{"NNTPAUTH"}) {
+ $auth = $ENV{"NNTPAUTH"};
+ &putline("AUTHINFO GENERIC $auth");
+ pipe AUTHSTDIN, TOAUTH or die "unable to create pipes";
+ pipe FROMAUTH, AUTHSTDOUT or die "unable to create pipes";
+ $pid = fork;
+ if (!defined $pid) {
+ die "unable to fork for authentication helper";
+ } elsif ($pid == 0) {
+ # we are child
+ $ENV{"NNTP_AUTH_FDS"} = "0.1";
+ open STDIN, "<&AUTHSTDIN";
+ open STDOUT, ">&AUTHSTDOUT";
+ close S;
+ exec $auth;
+ }
+ # we are parent
+ close AUTHSTDIN;
+ close AUTHSTDOUT;
+ autoflush TOAUTH 1;
+ &getline; print TOAUTH "$_\n";
+ while (<FROMAUTH>) {
+ s/[\r\n]*$//s;
+ &putline($_);
+ &getline;
+ print TOAUTH "$_\n";
+ }
+ die "failed authentication\n" unless $? == 0;
+ }
+}