lib/PublicInbox/LeiAuth.pm

   1 # Copyright (C) 2021 all contributors <meta@public-inbox.org>
   2 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
   3
   4 # Authentication worker for anything that needs auth for read/write IMAP
   5 # (eventually for read-only NNTP access)
   6 #
   7 # timelines
   8 # lei-daemon              |  LeiAuth worker #0      | other WQ workers
   9 # ----------------------------------------------------------
  10 # spawns all workers ---->[ workers all start and run ipc_atfork_child ]
  11 #                         | do_auth_atfork          | wq_worker_loop sleep
  12 #                         | # reads .netrc          |
  13 #                         | # queries git-credential|
  14 #                         | send net_merge_continue |
  15 #                         |         |               |
  16 #                         |         v               |
  17 # recv net_merge_continue <---------/               |
  18 #            |            |                         |
  19 #            v            |                         |
  20 # broadcast net_merge_all [ all workers (including LeiAuth worker #0) ]
  21 #                         [ LeiAuth worker #0 becomes just another WQ worker ]
  22 #                         |
  23 # call net_merge_all_done ->-> do per-WQ-class defined actions
  24 package PublicInbox::LeiAuth;
  25 use strict;
  26 use v5.10.1;
  27
  28 sub do_auth_atfork { # used by IPC WQ workers
  29         my ($self, $wq) = @_;
  30         return if $wq->{-wq_worker_nr} != 0; # only first worker calls this
  31         my $lei = $wq->{lei};
  32         my $net = $lei->{net};
  33         if ($net->{-auth_done}) { # from previous worker... (ugly)
  34                 $lei->{pkt_op_p}->pkt_do('net_merge_continue', $net) or
  35                                 $lei->fail("pkt_do net_merge_continue: $!");
  36                 return;
  37         }
  38         eval { # fill auth info (may prompt user or read netrc)
  39                 my $mics = $net->imap_common_init($lei);
  40                 my $nn = $net->nntp_common_init($lei);
  41                 # broadcast successful auth info to lei-daemon:
  42                 $net->{-auth_done} = 1;
  43                 $lei->{pkt_op_p}->pkt_do('net_merge_continue', $net) or
  44                                 die "pkt_do net_merge_continue: $!";
  45                 $net->{mics_cached} = $mics if $mics;
  46                 $net->{nn_cached} = $nn if $nn;
  47         };
  48         $lei->fail($@) if $@;
  49 }
  50
  51 sub net_merge_all { # called in wq worker via wq_broadcast
  52         my ($wq, $net_new) = @_;
  53         my $net = $wq->{lei}->{net};
  54         %$net = (%$net, %$net_new);
  55 }
  56
  57 # called by top-level lei-daemon when first worker is done with auth
  58 # passes updated net auth info to current workers
  59 sub net_merge_continue {
  60         my ($wq, $lei, $net_new) = @_;
  61         $wq->{-net_new} = $net_new; # for "lei up"
  62         $wq->wq_broadcast('PublicInbox::LeiAuth::net_merge_all', $net_new);
  63         $wq->net_merge_all_done($lei); # defined per-WQ
  64 }
  65
  66 sub op_merge { # prepares PktOp->pair ops
  67         my ($self, $ops, $wq, $lei) = @_;
  68         $ops->{net_merge_continue} = [ \&net_merge_continue, $wq, $lei ];
  69 }
  70
  71 sub new { bless \(my $x), __PACKAGE__ }
  72
  73 1;