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authorEric Wong <e@80x24.org>2021-04-30 09:24:37 +0000
committerEric Wong <e@80x24.org>2021-04-30 19:59:47 +0000
commit3af54d4bdba7fb8abce42cce820668d20f348451 (patch)
treeb56dd12e90d497a568254913dd46fd6a40883f38 /lib/PublicInbox
parent715c52fd1afe128d235cc1b9bade3db4ed647514 (diff)
downloadpublic-inbox-3af54d4bdba7fb8abce42cce820668d20f348451.tar.gz
Since Net::NNTP doesn't support Socket or RawSocket
options/accessors like Mail::IMAPClient does; we must perform
localized @ISA manipulation and massage Net::NNTP into using
IO::Socket::Socks rather than IO::Socket::IP.

This is a bit fragile, but Net::Cmd and Net::NNTP rarely change;
and I keep an eye on them, anyways.
Diffstat (limited to 'lib/PublicInbox')
-rw-r--r--lib/PublicInbox/NetNNTPSocks.pm33
-rw-r--r--lib/PublicInbox/NetReader.pm12
2 files changed, 44 insertions, 1 deletions
diff --git a/lib/PublicInbox/NetNNTPSocks.pm b/lib/PublicInbox/NetNNTPSocks.pm
new file mode 100644
index 00000000..8495204a
--- /dev/null
+++ b/lib/PublicInbox/NetNNTPSocks.pm
@@ -0,0 +1,33 @@
+# Copyright (C) 2021 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+
+# wrap Net::NNTP client with SOCKS support
+package PublicInbox::NetNNTPSocks;
+use strict;
+use v5.10.1;
+use Net::NNTP;
+our %OPT;
+our @ISA = qw(IO::Socket::Socks);
+my @SOCKS_KEYS = qw(ProxyAddr ProxyPort SocksVersion SocksDebug SocksResolve);
+
+# use this instead of Net::NNTP->new if using Proxy*
+sub new_socks {
+        my (undef, %opt) = @_;
+        require IO::Socket::Socks;
+        local @Net::NNTP::ISA = (qw(Net::Cmd), __PACKAGE__);
+        local %OPT = map {;
+                defined($opt{$_}) ? ($_ => $opt{$_}) : ()
+        } @SOCKS_KEYS;
+        Net::NNTP->new(%opt); # this calls our new() below:
+}
+
+# called by Net::NNTP->new
+sub new {
+        my ($self, %opt) = @_;
+        @OPT{qw(ConnectAddr ConnectPort)} = @opt{qw(PeerAddr PeerPort)};
+        my $ret = $self->SUPER::new(%OPT) or
+                die 'SOCKS error: '.eval('$IO::Socket::Socks::SOCKS_ERROR');
+        $ret;
+}
+
+1;
diff --git a/lib/PublicInbox/NetReader.pm b/lib/PublicInbox/NetReader.pm
index ac23e701..b2c4fee2 100644
--- a/lib/PublicInbox/NetReader.pm
+++ b/lib/PublicInbox/NetReader.pm
@@ -116,7 +116,13 @@ sub try_starttls ($) {
 
 sub nn_new ($$$) {
         my ($nn_arg, $nntp_opt, $uri) = @_;
-        my $nn = Net::NNTP->new(%$nn_arg) or die "E: <$uri> new: $!\n";
+        my $nn;
+        if (defined $nn_arg->{ProxyAddr}) {
+                eval { $nn = PublicInbox::NetNNTPSocks->new_socks(%$nn_arg) };
+                die "E: <$uri> $@\n" if $@;
+        } else {
+                $nn = Net::NNTP->new(%$nn_arg) or die "E: <$uri> new: $!\n";
+        }
 
         # default to using STARTTLS if it's available, but allow
         # it to be disabled for localhost/VPN users
@@ -170,6 +176,10 @@ sub nn_for ($$$$) { # nn = Net::NNTP
                 SSL => $uri->secure, # snews == nntps
                 %$common, # may Debug ....
         };
+        if ($lei && $lei->{socks5h}) {
+                require PublicInbox::NetNNTPSocks;
+                %$nn_arg = (%$nn_arg, %{$lei->{socks5h}});
+        }
         my $nn = nn_new($nn_arg, $nntp_opt, $uri);
         if ($cred) {
                 $cred->fill($lei); # may prompt user here