1 # Copyright (C) 2021 all contributors <meta@public-inbox.org>
2 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
4 # common reader code for IMAP and NNTP (and maybe JMAP)
5 package PublicInbox::NetReader;
8 use parent qw(Exporter PublicInbox::IPC);
10 use PublicInbox::Config;
11 our %IMAPflags2kw = map {; "\\\u$_" => $_ } qw(seen answered flagged draft);
12 $IMAPflags2kw{'$Forwarded'} = 'forwarded'; # RFC 5550
14 our @EXPORT = qw(uri_section imap_uri nntp_uri);
18 Data::Dumper->new(\@_)->Useqq(1)->Terse(1)->Dump;
21 # returns the git config section name, e.g [imap "imaps://user@example.com"]
22 # without the mailbox, so we can share connections between different inboxes
25 $uri->scheme . '://' . $uri->authority;
28 sub auth_anon_cb { '' }; # for Mail::IMAPClient::Authcallback
30 # mic_for may prompt the user and store auth info, prepares mic_get
31 sub mic_for ($$$$) { # mic = Mail::IMAPClient
32 my ($self, $url, $mic_args, $lei) = @_;
33 require PublicInbox::URIimap;
34 my $uri = PublicInbox::URIimap->new($url);
35 require PublicInbox::GitCredential;
38 protocol => $uri->scheme,
40 username => $uri->user,
41 password => $uri->password,
42 }, 'PublicInbox::GitCredential';
43 my $common = $mic_args->{uri_section($uri)} // {};
44 # IMAPClient and Net::Netrc both mishandles `0', so we pass `127.0.0.1'
45 my $host = $cred->{host};
46 $host = '127.0.0.1' if $host eq '0';
50 Ssl => $uri->scheme eq 'imaps',
51 Keepalive => 1, # SO_KEEPALIVE
52 %$common, # may set Starttls, Compress, Debug ....
54 require PublicInbox::IMAPClient;
56 if ($lei && $lei->{socks5h}) {
57 my %opt = %{$lei->{socks5h}};
58 $opt{ConnectAddr} = delete $mic_arg->{Server};
59 $opt{ConnectPort} = delete $mic_arg->{Port};
60 $socks{Socket} = IO::Socket::Socks->new(%opt) or die
61 "E: <$url> ".eval('$IO::Socket::Socks::SOCKS_ERROR');
62 $self->{mic_socks5h} = \%opt;
64 my $mic = PublicInbox::IMAPClient->new(%$mic_arg, %socks) or
65 die "E: <$url> new: $@\n";
67 # default to using STARTTLS if it's available, but allow
68 # it to be disabled since I usually connect to localhost
69 if (!$mic_arg->{Ssl} && !defined($mic_arg->{Starttls}) &&
70 $mic->has_capability('STARTTLS') &&
71 $mic->can('starttls')) {
72 $mic->starttls or die "E: <$url> STARTTLS: $@\n";
75 # do we even need credentials?
76 if (!defined($cred->{username}) &&
77 $mic->has_capability('AUTH=ANONYMOUS')) {
81 $cred->check_netrc unless defined $cred->{password};
82 $cred->fill($lei); # may prompt user here
83 $mic->User($mic_arg->{User} = $cred->{username});
84 $mic->Password($mic_arg->{Password} = $cred->{password});
85 } else { # AUTH=ANONYMOUS
86 $mic->Authmechanism($mic_arg->{Authmechanism} = 'ANONYMOUS');
87 $mic_arg->{Authcallback} = 'auth_anon_cb';
88 $mic->Authcallback(\&auth_anon_cb);
91 if ($mic->login && $mic->IsAuthenticated) {
92 # success! keep IMAPClient->new arg in case we get disconnected
93 $self->{mic_arg}->{uri_section($uri)} = $mic_arg;
95 $err = "E: <$url> LOGIN: $@\n";
96 if ($cred && defined($cred->{password})) {
97 $err =~ s/\Q$cred->{password}\E/*******/g;
101 $cred->run($mic ? 'approve' : 'reject') if $cred;
103 $lei ? $lei->fail($err) : warn($err);
108 # Net::NNTP doesn't support CAPABILITIES, yet
109 sub try_starttls ($) {
111 return if $host =~ /\.onion\z/s;
112 return if $host =~ /\A127\.[0-9]+\.[0-9]+\.[0-9]+\z/s;
113 return if $host eq '::1';
118 my ($nn_arg, $nntp_opt, $uri) = @_;
120 if (defined $nn_arg->{ProxyAddr}) {
121 eval { $nn = PublicInbox::NetNNTPSocks->new_socks(%$nn_arg) };
122 die "E: <$uri> $@\n" if $@;
124 $nn = Net::NNTP->new(%$nn_arg) or die "E: <$uri> new: $!\n";
127 # default to using STARTTLS if it's available, but allow
128 # it to be disabled for localhost/VPN users
129 if (!$nn_arg->{SSL} && $nn->can('starttls')) {
130 if (!defined($nntp_opt->{starttls}) &&
131 try_starttls($nn_arg->{Host})) {
132 # soft fail by default
133 $nn->starttls or warn <<"";
134 W: <$uri> STARTTLS tried and failed (not requested)
136 } elsif ($nntp_opt->{starttls}) {
137 # hard fail if explicitly configured
138 $nn->starttls or die <<"";
139 E: <$uri> STARTTLS requested and failed
142 } elsif ($nntp_opt->{starttls}) {
143 $nn->can('starttls') or
144 die "E: <$uri> Net::NNTP too old for STARTTLS\n";
145 $nn->starttls or die <<"";
146 E: <$uri> STARTTLS requested and failed
152 sub nn_for ($$$$) { # nn = Net::NNTP
153 my ($self, $uri, $nn_args, $lei) = @_;
154 my $sec = uri_section($uri);
155 my $nntp_opt = $self->{nntp_opt}->{$sec} //= {};
156 my $host = $uri->host;
157 # Net::NNTP and Net::Netrc both mishandle `0', so we pass `127.0.0.1'
158 $host = '127.0.0.1' if $host eq '0';
161 if (defined(my $ui = $uri->userinfo)) {
162 require PublicInbox::GitCredential;
165 protocol => $uri->scheme,
167 }, 'PublicInbox::GitCredential';
168 ($u, $p) = split(/:/, $ui, 2);
169 ($cred->{username}, $cred->{password}) = ($u, $p);
170 $cred->check_netrc unless defined $p;
172 my $common = $nn_args->{$sec} // {};
176 SSL => $uri->secure, # snews == nntps
177 %$common, # may Debug ....
179 if ($lei && $lei->{socks5h}) {
180 require PublicInbox::NetNNTPSocks;
181 %$nn_arg = (%$nn_arg, %{$lei->{socks5h}});
183 my $nn = nn_new($nn_arg, $nntp_opt, $uri);
185 $cred->fill($lei); # may prompt user here
186 if ($nn->authinfo($u, $p)) {
187 push @{$nntp_opt->{-postconn}}, [ 'authinfo', $u, $p ];
189 warn "E: <$uri> AUTHINFO $u XXXX failed\n";
194 if ($nntp_opt->{compress}) {
195 # https://rt.cpan.org/Ticket/Display.html?id=129967
196 if ($nn->can('compress')) {
198 push @{$nntp_opt->{-postconn}}, [ 'compress' ];
200 warn "W: <$uri> COMPRESS failed\n";
203 delete $nntp_opt->{compress};
205 W: <$uri> COMPRESS not supported by Net::NNTP
206 W: see https://rt.cpan.org/Ticket/Display.html?id=129967 for updates
211 $self->{nn_arg}->{$sec} = $nn_arg;
212 $cred->run($nn ? 'approve' : 'reject') if $cred;
218 require PublicInbox::URIimap;
219 my $uri = PublicInbox::URIimap->new($url);
220 $uri ? $uri->canonical : undef;
223 my %IS_NNTP = (news => 1, snews => 1, nntp => 1, nntps => 1);
226 require PublicInbox::URInntps;
227 my $uri = PublicInbox::URInntps->new($url);
228 $uri && $IS_NNTP{$uri->scheme} && $uri->group ? $uri->canonical : undef;
231 sub cfg_intvl ($$$) {
232 my ($cfg, $key, $url) = @_;
233 my $v = $cfg->urlmatch($key, $url) // return;
234 $v =~ /\A[0-9]+(?:\.[0-9]+)?\z/s and return $v + 0;
235 if (ref($v) eq 'ARRAY') {
236 $v = join(', ', @$v);
237 warn "W: $key has multiple values: $v\nW: $key ignored\n";
239 warn "W: $key=$v is not a numeric value in seconds\n";
244 my ($cfg, $key, $url) = @_;
245 my $orig = $cfg->urlmatch($key, $url) // return;
246 my $bool = $cfg->git_bool($orig);
247 warn "W: $key=$orig for $url is not boolean\n" unless defined($bool);
251 # flesh out common IMAP-specific data structures
252 sub imap_common_init ($;$) {
253 my ($self, $lei) = @_;
254 return unless $self->{imap_order};
255 $self->{quiet} = 1 if $lei && $lei->{opt}->{quiet};
256 eval { require PublicInbox::IMAPClient } or
257 die "Mail::IMAPClient is required for IMAP:\n$@\n";
258 ($lei || eval { require PublicInbox::IMAPTracker }) or
259 die "DBD::SQLite is required for IMAP\n:$@\n";
260 require PublicInbox::URIimap;
261 my $cfg = $self->{pi_cfg} // $lei->_lei_cfg;
262 my $mic_args = {}; # scheme://authority => Mail:IMAPClient arg
263 for my $uri (@{$self->{imap_order}}) {
264 my $sec = uri_section($uri);
265 for my $k (qw(Starttls Debug Compress)) {
266 my $bool = cfg_bool($cfg, "imap.$k", $$uri) // next;
267 $mic_args->{$sec}->{$k} = $bool;
269 my $to = cfg_intvl($cfg, 'imap.timeout', $$uri);
270 $mic_args->{$sec}->{Timeout} = $to if $to;
271 for my $k (qw(pollInterval idleInterval)) {
272 $to = cfg_intvl($cfg, "imap.$k", $$uri) // next;
273 $self->{imap_opt}->{$sec}->{$k} = $to;
275 my $k = 'imap.fetchBatchSize';
276 my $bs = $cfg->urlmatch($k, $$uri) // next;
277 if ($bs =~ /\A([0-9]+)\z/) {
278 $self->{imap_opt}->{$sec}->{batch_size} = $bs;
280 warn "$k=$bs is not an integer\n";
283 # make sure we can connect and cache the credentials in memory
284 $self->{mic_arg} = {}; # schema://authority => IMAPClient->new args
285 my $mics = {}; # schema://authority => IMAPClient obj
286 for my $uri (@{$self->{imap_order}}) {
287 my $sec = uri_section($uri);
288 my $mic = $mics->{$sec} //=
289 mic_for($self, "$sec/", $mic_args, $lei) //
290 die "Unable to continue\n";
291 next unless $self->isa('PublicInbox::NetWriter');
292 my $dst = $uri->mailbox // next;
293 next if $mic->exists($dst); # already exists
294 $mic->create($dst) or die "CREATE $dst failed <$uri>: $@";
299 # flesh out common NNTP-specific data structures
300 sub nntp_common_init ($;$) {
301 my ($self, $lei) = @_;
302 return unless $self->{nntp_order};
303 $self->{quiet} = 1 if $lei && $lei->{opt}->{quiet};
304 eval { require Net::NNTP } or
305 die "Net::NNTP is required for NNTP:\n$@\n";
306 ($lei || eval { require PublicInbox::IMAPTracker }) or
307 die "DBD::SQLite is required for NNTP\n:$@\n";
308 my $cfg = $self->{pi_cfg} // $lei->_lei_cfg;
309 my $nn_args = {}; # scheme://authority => Net::NNTP->new arg
310 for my $uri (@{$self->{nntp_order}}) {
311 my $sec = uri_section($uri);
313 # Debug and Timeout are passed to Net::NNTP->new
314 my $v = cfg_bool($cfg, 'nntp.Debug', $$uri);
315 $nn_args->{$sec}->{Debug} = $v if defined $v;
316 my $to = cfg_intvl($cfg, 'nntp.Timeout', $$uri);
317 $nn_args->{$sec}->{Timeout} = $to if $to;
319 # Net::NNTP post-connect commands
320 for my $k (qw(starttls compress)) {
321 $v = cfg_bool($cfg, "nntp.$k", $$uri) // next;
322 $self->{nntp_opt}->{$sec}->{$k} = $v;
326 for my $k (qw(pollInterval)) {
327 $to = cfg_intvl($cfg, "nntp.$k", $$uri) // next;
328 $self->{nntp_opt}->{$sec}->{$k} = $to;
331 # make sure we can connect and cache the credentials in memory
332 $self->{nn_arg} = {}; # schema://authority => Net::NNTP->new args
333 my %nn; # schema://authority => Net::NNTP object
334 for my $uri (@{$self->{nntp_order}}) {
335 my $sec = uri_section($uri);
336 $nn{$sec} //= nn_for($self, $uri, $nn_args, $lei);
338 \%nn; # for optional {nn_cached}
342 my ($self, $arg) = @_;
344 if ($uri = imap_uri($arg)) {
345 push @{$self->{imap_order}}, $uri;
346 } elsif ($uri = nntp_uri($arg)) {
347 push @{$self->{nntp_order}}, $uri;
349 push @{$self->{unsupported_url}}, $arg;
354 my ($self, $lei) = @_;
355 if (my $u = $self->{unsupported_url}) {
356 return "Unsupported URL(s): @$u";
358 if ($self->{imap_order}) {
359 eval { require PublicInbox::IMAPClient } or
360 die "Mail::IMAPClient is required for IMAP:\n$@\n";
362 if ($self->{nntp_order}) {
363 eval { require Net::NNTP } or
364 die "Net::NNTP is required for NNTP:\n$@\n";
366 if ($lei && (($lei->{opt}->{proxy}//'') =~ m!\Asocks5h://
367 (?: \[ ([^\]]+) \] | ([^:/]+) )
368 (?::([0-9]+))?/?(?:,|\z)!ix)) {
369 my ($h, $p) = ($1 // $2, $3 + 0);
370 $h = '127.0.0.1' if $h eq '0';
371 eval { require IO::Socket::Socks } or die <<EOM;
372 IO::Socket::Socks missing for socks5h://$h:$p
374 $lei->{socks5h} = { ProxyAddr => $h, ProxyPort => $p };
379 sub _imap_do_msg ($$$$$) {
380 my ($self, $url, $uid, $raw, $flags) = @_;
381 # our target audience expects LF-only, save storage
382 $$raw =~ s/\r\n/\n/sg;
384 for my $f (split(/ /, $flags)) {
385 if (my $k = $IMAPflags2kw{$f}) {
387 } elsif ($f eq "\\Recent") { # not in JMAP
388 } elsif ($f eq "\\Deleted") { # not in JMAP
390 } elsif ($self->{verbose}) {
391 warn "# unknown IMAP flag $f <$url/;UID=$uid>\n";
394 @$kw = sort @$kw; # for all UI/UX purposes
395 my ($eml_cb, @args) = @{$self->{eml_each}};
396 $eml_cb->($url, $uid, $kw, PublicInbox::Eml->new($raw), @args);
399 sub run_commit_cb ($) {
401 my $cmt_cb_args = $self->{on_commit} or return;
402 my ($cb, @args) = @$cmt_cb_args;
406 sub _itrk_last ($$;$) {
407 my ($self, $uri, $r_uidval) = @_;
408 return (undef, undef, $r_uidval) unless $self->{incremental};
409 my ($itrk, $l_uid, $l_uidval);
410 if (defined(my $lms = $self->{-lms_ro})) { # LeiMailSync or 0
411 $uri->uidvalidity($r_uidval) if defined $r_uidval;
413 $l_uid = ($lms && ($x = $lms->location_stats($$uri))) ?
414 $x->{'uid.max'} : undef;
415 # itrk remains undef, lei/store worker writes to
418 $itrk = PublicInbox::IMAPTracker->new($$uri);
419 ($l_uidval, $l_uid) = $itrk->get_last($$uri);
421 ($itrk, $l_uid, $l_uidval //= $r_uidval);
424 sub _imap_fetch_all ($$$) {
425 my ($self, $mic, $orig_uri) = @_;
426 my $sec = uri_section($orig_uri);
427 my $mbx = $orig_uri->mailbox;
428 $mic->Clear(1); # trim results history
429 $mic->examine($mbx) or return "E: EXAMINE $mbx ($sec) failed: $!";
430 my ($r_uidval, $r_uidnext);
431 for ($mic->Results) {
432 /^\* OK \[UIDVALIDITY ([0-9]+)\].*/ and $r_uidval = $1;
433 /^\* OK \[UIDNEXT ([0-9]+)\].*/ and $r_uidnext = $1;
434 last if $r_uidval && $r_uidnext;
436 $r_uidval //= $mic->uidvalidity($mbx) //
437 return "E: $orig_uri cannot get UIDVALIDITY";
438 $r_uidnext //= $mic->uidnext($mbx) //
439 return "E: $orig_uri cannot get UIDNEXT";
440 my $expect = $orig_uri->uidvalidity // $r_uidval;
441 return <<EOF if $expect != $r_uidval;
442 E: $orig_uri UIDVALIDITY mismatch (got $r_uidval)
445 my $uri = $orig_uri->clone;
446 my ($itrk, $l_uid, $l_uidval) = _itrk_last($self, $uri, $r_uidval);
447 return <<EOF if $l_uidval != $r_uidval;
448 E: $uri UIDVALIDITY mismatch
449 E: local=$l_uidval != remote=$r_uidval
451 $uri->uidvalidity($r_uidval);
453 my $r_uid = $r_uidnext - 1;
454 return <<EOF if $l_uid > $r_uid;
455 E: $uri local UID exceeds remote ($l_uid > $r_uid)
456 E: $uri strangely, UIDVALIDLITY matches ($l_uidval)
458 return if $l_uid >= $r_uid; # nothing to do
460 my ($mod, $shard) = @{$self->{shard_info} // []};
461 unless ($self->{quiet}) {
462 my $m = $mod ? " [(UID % $mod) == $shard]" : '';
463 warn "# $uri fetching UID $l_uid:$r_uid$m\n";
465 $mic->Uid(1); # the default, we hope
466 my $bs = $self->{imap_opt}->{$sec}->{batch_size} // 1;
467 my $req = $mic->imap4rev1 ? 'BODY.PEEK[]' : 'RFC822.PEEK';
473 # I wish "UID FETCH $START:*" could work, but:
474 # 1) servers do not need to return results in any order
475 # 2) Mail::IMAPClient doesn't offer a streaming API
476 unless ($uids = $mic->search("UID $l_uid:*")) {
477 return if $!{EINTR} && $self->{quit};
478 return "E: $uri UID SEARCH $l_uid:* error: $!";
480 return if scalar(@$uids) == 0;
482 # RFC 3501 doesn't seem to indicate order of UID SEARCH
483 # responses, so sort it ourselves. Order matters so
484 # IMAPTracker can store the newest UID.
485 @$uids = sort { $a <=> $b } @$uids;
487 # Did we actually get new messages?
488 return if $uids->[0] < $l_uid;
490 $l_uid = $uids->[-1] + 1; # for next search
492 my $n = $self->{max_batch};
494 @$uids = grep { ($_ % $mod) == $shard } @$uids if $mod;
495 while (scalar @$uids) {
496 my @batch = splice(@$uids, 0, $bs);
497 $batch = join(',', @batch);
498 local $0 = "UID:$batch $mbx $sec";
499 my $r = $mic->fetch_hash($batch, $req, 'FLAGS');
500 unless ($r) { # network error?
501 last if $!{EINTR} && $self->{quit};
502 $err = "E: $uri UID FETCH $batch error: $!";
505 for my $uid (@batch) {
506 # messages get deleted, so holes appear
507 my $per_uid = delete $r->{$uid} // next;
508 my $raw = delete($per_uid->{$key}) // next;
509 _imap_do_msg($self, $$uri, $uid, \$raw,
512 last if $self->{quit};
514 last if $self->{quit};
516 run_commit_cb($self);
517 $itrk->update_last($r_uidval, $last_uid) if $itrk;
518 } until ($err || $self->{quit});
522 # uses cached auth info prepared by mic_for
524 my ($self, $uri) = @_;
525 my $sec = uri_section($uri);
526 # see if caller saved result of imap_common_init
527 my $cached = $self->{mics_cached};
529 my $mic = $cached->{$sec};
530 return $mic if $mic && $mic->IsConnected;
531 delete $cached->{$sec};
533 my $mic_arg = $self->{mic_arg}->{$sec} or
534 die "BUG: no Mail::IMAPClient->new arg for $sec";
535 if (defined(my $cb_name = $mic_arg->{Authcallback})) {
536 if (ref($cb_name) ne 'CODE') {
537 $mic_arg->{Authcallback} = $self->can($cb_name);
541 if (my $s5h = $self->{mic_socks5h}) {
542 $socks{Socket} = IO::Socket::Socks->new(%$s5h) or die
543 "E: <$$uri> ".eval('$IO::Socket::Socks::SOCKS_ERROR');
545 my $mic = PublicInbox::IMAPClient->new(%$mic_arg, %socks);
546 $cached //= {}; # invalid placeholder if no cache enabled
547 $mic && $mic->IsConnected ? ($cached->{$sec} = $mic) : undef;
551 my ($self, $url, $eml_cb, @args) = @_;
552 my $uri = ref($url) ? $url : PublicInbox::URIimap->new($url);
553 my $sec = uri_section($uri);
554 local $0 = $uri->mailbox." $sec";
555 my $mic = mic_get($self, $uri);
558 local $self->{eml_each} = [ $eml_cb, @args ];
559 $err = _imap_fetch_all($self, $mic, $uri);
561 $err = "E: <$uri> not connected: $!";
563 die $err if $err && $self->{-can_die};
568 # may used cached auth info prepared by nn_for once
570 my ($self, $uri) = @_;
571 my $sec = uri_section($uri);
572 # see if caller saved result of nntp_common_init
573 my $cached = $self->{nn_cached} // {};
575 $nn = delete($cached->{$sec}) and return $nn;
576 my $nn_arg = $self->{nn_arg}->{$sec} or
577 die "BUG: no Net::NNTP->new arg for $sec";
578 my $nntp_opt = $self->{nntp_opt}->{$sec};
579 $nn = nn_new($nn_arg, $nntp_opt, $uri) or return;
580 if (my $postconn = $nntp_opt->{-postconn}) {
581 for my $m_arg (@$postconn) {
582 my ($method, @args) = @$m_arg;
583 $nn->$method(@args) and next;
584 die "E: <$uri> $method failed\n";
591 sub _nntp_fetch_all ($$$) {
592 my ($self, $nn, $uri) = @_;
593 my ($group, $num_a, $num_b) = $uri->group;
594 my $sec = uri_section($uri);
595 my ($nr, $beg, $end) = $nn->group($group);
596 unless (defined($nr)) {
597 my $msg = ndump($nn->message);
598 return "E: GROUP $group <$sec> $msg";
601 # IMAPTracker is also used for tracking NNTP, UID == article number
602 # LIST.ACTIVE can get the equivalent of UIDVALIDITY, but that's
603 # expensive. So we assume newsgroups don't change:
604 my ($itrk, $l_art) = _itrk_last($self, $uri);
606 # allow users to specify articles to refetch
607 # cf. https://tools.ietf.org/id/draft-gilman-news-url-01.txt
608 # nntp://example.com/inbox.foo/$num_a-$num_b
609 $beg = $num_a if defined($num_a) && $num_a < $beg;
610 $end = $num_b if defined($num_b) && $num_b < $end;
611 if (defined $l_art) {
612 return if $l_art >= $end; # nothing to do
615 my ($err, $art, $last_art, $kw); # kw stays undef, no keywords in NNTP
616 unless ($self->{quiet}) {
617 warn "# $uri fetching ARTICLE $beg..$end\n";
619 my $n = $self->{max_batch};
621 last if $self->{quit};
624 run_commit_cb($self);
625 $itrk->update_last(0, $last_art) if $itrk;
626 $n = $self->{max_batch};
628 my $raw = $nn->article($art);
629 unless (defined($raw)) {
630 my $msg = ndump($nn->message);
631 if ($nn->code == 421) { # pseudo response from Net::Cmd
634 } else { # probably just a deleted message (spam)
639 $raw = join('', @$raw);
640 $raw =~ s/\r\n/\n/sg;
641 my ($eml_cb, @args) = @{$self->{eml_each}};
642 $eml_cb->($uri, $art, $kw, PublicInbox::Eml->new(\$raw), @args);
645 run_commit_cb($self);
646 $itrk->update_last(0, $last_art) if $itrk;
651 my ($self, $url, $eml_cb, @args) = @_;
652 my $uri = ref($url) ? $url : PublicInbox::URInntps->new($url);
653 my $sec = uri_section($uri);
654 local $0 = $uri->group ." $sec";
655 my $nn = nn_get($self, $uri);
656 return if $self->{quit};
659 local $self->{eml_each} = [ $eml_cb, @args ];
660 $err = _nntp_fetch_all($self, $nn, $uri);
662 $err = "E: <$uri> not connected: $!";
664 die $err if $err && $self->{-can_die};
669 sub new { bless {}, shift };