From ee43823179ee627ac16ea9da8168e5f1bf9619c0 Mon Sep 17 00:00:00 2001
From: "Jannis M. Hoffmann" <jannis.hoffmann@rwth-aachen.de>
Date: Thu, 29 Oct 2020 12:13:04 +0100
Subject: Initial commit; Stable version

---
 lib/JWebmail/Model/Driver/QMailAuthuser.pm | 142 +++++++++++++++++++++++++++++
 1 file changed, 142 insertions(+)
 create mode 100644 lib/JWebmail/Model/Driver/QMailAuthuser.pm

(limited to 'lib/JWebmail/Model/Driver/QMailAuthuser.pm')

diff --git a/lib/JWebmail/Model/Driver/QMailAuthuser.pm b/lib/JWebmail/Model/Driver/QMailAuthuser.pm
new file mode 100644
index 0000000..65e90f1
--- /dev/null
+++ b/lib/JWebmail/Model/Driver/QMailAuthuser.pm
@@ -0,0 +1,142 @@
+package JWebmail::Model::Driver::QMailAuthuser;
+
+use Mojo::Base -base;
+
+use IPC::Open2;
+use File::Basename 'fileparse';
+use JSON::PP;
+
+
+has 'user';
+has 'maildir';
+has 'include';
+has qmail_dir => '/var/qmail/';
+has prog      => [fileparse(__FILE__)]->[1] . '/QMailAuthuser/Extract.pm';
+has logfile   => '/dev/null';
+
+
+sub communicate {
+    use autodie;
+
+    my $self = shift;
+    my %args = @_;
+
+    $args{challenge} //= '';
+    $args{args} //= [];
+
+    my $exec = do {
+        if ($args{mode} eq 'auth') {
+            $self->qmail_dir . "/bin/qmail-authuser true 3<&0";
+        }
+        else {
+            my ($user_name) = $args{user} =~ /(\w*)@/;
+
+            $self->qmail_dir.'/bin/qmail-authuser'
+            . ' perl '
+            . join('', map { ' -I ' . $_ } @{ $self->include })
+            . ' -- '
+            . join(' ', map { $_ =~ s/(['\\])/\\$1/g; "'$_'" } ($self->prog, $self->maildir, $self->user, $user_name, $args{mode}, @{$args{args}}))
+            . ' 3<&0'
+            . ' 2>>'.$self->logfile;
+        }
+    };
+
+    my $pid = open2(my $reader, my $writer, $exec)
+        or die 'failed to create subprocess';
+
+    $writer->print("$args{user}\0$args{password}\0$args{challenge}\0")
+        or die 'pipe wite failed';
+    close $writer
+        or die 'closing write pipe failed';
+
+    binmode $reader, ':utf8';
+    my $input = <$reader>;
+    close $reader
+        or die 'closing read pipe failed';
+
+    waitpid($pid, 0);
+    my $rc = $? >> 8;
+
+    my $resp;
+    if ($rc == 3 || $rc == 0) {
+        eval { $resp = decode_json $input; };
+        if ($@) { $resp = {error => 'decoding error'} };
+    }
+    elsif ($rc) {
+        $resp = {error => "qmail-authuser returned code: $rc"};
+    }
+
+    return ($resp, $rc);
+}
+
+
+1
+
+__END__
+
+=encoding utf-8
+
+=head1 NAME
+
+QMailAuthuser
+
+=head1 SYNOPSIS
+
+  my $m = JWebmail::Model::ReadMails->new(driver => JWebmail::Model::Driver::QMailAuthuser->new(...));
+
+=head1 DESCRIPTION
+
+This ReadMails driver starts and communicates with L<JWebmail::Model::Driver::QMailAuthuser::Extract> over qmail-authuser.
+The Extract programm runs with elevated priviliges to be able to read and modify mailboxes.
+
+=head1 ATTRIBUTES
+
+=head2 qmail_dir
+
+The parent directory of the bin directory where all qmail executables live.
+Default C</var/qmail/>.
+
+=head2 prog
+
+The path to the extractor programm.
+Default is the location of L<JWebmail::Model::Driver::QMailAuthuser::Extract> package.
+
+=head2 logfile
+
+A path to a log file that the extractor logs to.
+Default '/dev/null' but highly recommended to set a real one.
+Keep in mind that a different user need to be able to write to it.
+
+=head1 METHODS
+
+=head2 communicate
+
+Arguments:
+
+=over 6
+
+=item mode
+
+=item args
+
+Depends on the mode
+
+=item user
+
+User name
+
+=item password
+
+User password
+
+=item challenge
+
+Challenge when using cram
+
+=back
+
+=head1 SEE ALSO
+
+L<JWebmail::Model::ReadMails>, L<JWebmail::Model::Driver::QMailAuthuser::Extract>
+
+=cut
\ No newline at end of file
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