+#!/usr/bin/perl -w
+# Copyright (C) 2014, Eric Wong <normalperson@yhbt.net> and all contributors
+# License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
+my $usage = "$0 (spam|ham) < /path/to/message";
+use strict;
+use warnings;
+use PublicInbox::Config;
+use Email::Simple;
+use Email::Address;
+use IPC::Run qw/run/;
+my $train = shift or die "usage: $usage\n";
+if ($train !~ /\A(?:ham|spam)\z/) {
+ die "`$train' not recognized.\nusage: $usage\n";
+}
+
+my $pi_config = PublicInbox::Config->new;
+my $simple;
+{
+ local $/;
+ $simple = Email::Simple->new(<>);
+}
+
+# get all recipients
+my %dests;
+foreach my $h (qw(Cc To)) {
+ foreach my $recipient (Email::Address->parse($simple->header($h))) {
+ $dests{lc($recipient->address)} = 1;
+ }
+}
+
+my $in = $simple->as_string;
+$simple->body_set("");
+
+my $err = 0;
+my @output = qw(> /dev/null > /dev/null);
+
+# n.b. message may be cross-posted to multiple public-inboxes
+foreach my $recipient (keys %dests) {
+ my $dst = $pi_config->lookup($recipient) or next;
+ my $git_dir = $dst->{mainrepo} or next;
+ my ($out, $err) = ("", "");
+
+ # We do not touch GIT_COMMITTER_* env here so we can track
+ # who trained the message.
+ # We will not touch GIT_AUTHOR_* when learning spam messages, either
+ if ($train eq "spam") {
+ # This needs to be idempotent, as my inotify trainer
+ # may train for each cross-posted message, and this
+ # script already learns for every list in
+ # ~/.public-inbox/config
+ if (!run(["ssoma-rm", $git_dir], \$in, \$out, \$err)) {
+ if ($err !~ /^git cat-file .+ failed: 32768$/) {
+ $err = 1;
+ }
+ }
+ } else { # $train eq "ham"
+ my $from = $simple->header("From");
+ my @from = Email::Address->parse($from);
+ my $name = $from[0]->name;
+ defined $name or $name = "";
+ my $email = $from[0]->address;
+ defined $email or $email = "";
+ local $ENV{GIT_AUTHOR_NAME} = $name;
+ local $ENV{GIT_AUTHOR_EMAIL} = $email;
+ local $ENV{GIT_AUTHOR_DATE} = $simple->header("Date");
+
+ # Ham messages are trained when they're marked into
+ # a SEEN state, so this is idempotent
+ run([qw(ssoma-mda -1), $git_dir], \$in, \$out, \$err);
+ if ($err !~ /CONFLICT/) {
+ $err = 1;
+ }
+ }
+ if (!run([qw(spamc -L), $train], \$in, @output)) {
+ $err = 1;
+ }
+}
+exit $err;