From 219316fe8dcc6f5b599e2cf2ef3bcf0f72a02938 Mon Sep 17 00:00:00 2001
From: Florian Pritz <bluewind@xinu.at>
Date: Thu, 6 Sep 2018 12:13:26 +0200
Subject: masterkey.pl: Select best email instead of using first one from gpg
 uid list

Signed-off-by: Florian Pritz <bluewind@xinu.at>
---
 masterkey.pl | 59 ++++++++++++++++++++++++++++++++++++++++-------------------
 1 file changed, 40 insertions(+), 19 deletions(-)

diff --git a/masterkey.pl b/masterkey.pl
index 861427a..a55579a 100755
--- a/masterkey.pl
+++ b/masterkey.pl
@@ -10,6 +10,7 @@ use Function::Parameters;
 use Getopt::Long;
 use GnuPG::Interface;
 use JSON;
+use List::Util qw(first);
 use List::MoreUtils;
 use Mail::GPG;
 use MIME::Entity;
@@ -32,12 +33,14 @@ Send verification mails to the owners of the listed GPG keys.
    --help, -h             short help message
    --dry-run, -n          do not perform any permanent actions
    --from, -f <gpg id>    GPG ID used to send the email
+   --from-address <email> Email of GPG ID to use
    --tokenfile <file>     Record tokens in this file
    --debug                Output debugging information
 
 =cut
 
 sub main {
+	my $recipient_address_regex = qr/\@archlinux\.org/;
 	my %templates = (
 		'verification' => {
 			'subject' => 'Master Key Verification for {$recipient_name} ({$recipient_key})',
@@ -75,7 +78,7 @@ on behalf of {$sender_name} ({$sender_key})
 	my %opts = ();
 
 	Getopt::Long::Configure ("bundling");
-	GetOptions(\%opts, "help|h", "dry-run|n", "from|f=s", "tokenfile=s", "debug") or pod2usage(2);
+	GetOptions(\%opts, "help|h", "dry-run|n", "from|f=s", "from-address=s", "tokenfile=s", "debug") or pod2usage(2);
 	pod2usage(0) if $opts{help};
 	pod2usage(-verbose => 0) if (@ARGV== 0);
 
@@ -95,7 +98,7 @@ on behalf of {$sender_name} ({$sender_key})
 			my $mail_body = $templates{$command}{'body'};
 			my $token = random_string('.' x 25);
 
-			my $msg = build_email($command, $opts{from}, $id, $mail_subject, $mail_body, $token);
+			my $msg = build_email($command, $opts{from}, quotemeta($opts{'from-address'}), $id, $recipient_address_regex, $mail_subject, $mail_body, $token);
 
 			if ($command eq 'verification') {
 				save_token($id, $token, $opts{tokenfile}) unless $opts{'dry-run'};
@@ -124,33 +127,51 @@ fun fill_template($template, $values) {
 
 fun gpg_get_users($key) {
 	my $gpg = GnuPG::Interface->new();
-	my @keys = $gpg->get_public_keys($key);
+	my @keys = $gpg->get_public_keys_with_sigs($key);
 
 	die "No key found" if 0+@keys == 0;
 
-	my $user = Encode::decode('utf8', $keys[0]->user_ids_ref->[0]->as_string);
+	my @users;
 
-	unless ($user =~ m/^(?<name>.*?) (?:\((?<comment>.*?)\) )?\<(?<email>.*?@.*?)\>$/) {
-		die "Failed to parse GPG user information for key $key; got $user";
-	}
+	for my $uid ($keys[0]->user_ids->@*) {
+		next if $uid->revocations->@* > 0;
+
+		my $user = Encode::decode('utf8', $uid->as_string);
+		unless ($user =~ m/^(?<name>.*?) (?:\((?<comment>.*?)\) )?\<(?<email>.*?@.*?)\>$/) {
+			die "Failed to parse GPG user information for key $key; got $user";
+		}
 
-	my $name = $+{name};
-	my $email = $+{email};
+		push @users, {%+};
+	}
 
-	return ($name, $email);
+	return \@users;
 }
 
-sub build_email {
-	my $command = shift;
-	my $sender_key = shift;
-	my $recipient_key = shift;
-	my $subject = shift;
-	my $body = shift;
-	my $token = shift;
+fun gpg_get_user($key, $email_regex) {
+	my $users = gpg_get_users($key);
+
+	return $users->[0] if $users->@* == 1;
+
+	my $user = first {$_->{email} =~ m/$email_regex/} $users->@*;
+
+	while (not defined $user) {
+		for my $item ($users->@*) {
+			printf "%s - %s\n", $item->@{qw(name email)};
+		}
+
+		print "Enter email address to use: ";
+		my $email = <STDIN>;
+		chomp($email);
+		$user = first {$_->{email} eq $email} $users->@*;
+	}
+
+	return $user;
+}
 
+fun build_email($command, $sender_key, $from_address_regex, $recipient_key, $recipient_address_regex, $subject, $body, $token) {
 	# get from gpg keys
-	my ($sender_name, $sender_addr) = gpg_get_user($sender_key);
-	my ($recipient_name, $recipient_addr) = gpg_get_user($recipient_key);
+	my ($sender_name, $sender_addr) = gpg_get_user($sender_key, $from_address_regex)->@{qw(name email)};
+	my ($recipient_name, $recipient_addr) = gpg_get_user($recipient_key, $recipient_address_regex)->@{qw(name email)};
 
 	my %values;
 	$values{token} = $token;
-- 
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