(occ db:convert-type) Add support for UNIX sockets

Fixes #31998

Adds support to `occ db:convert-type` to support UNIX socket connections via MySQL/MariaDB. Uses same `dbhost` / `hostname` parameter parsing logic (adapted) as used elsewhere (at least the relevant parts) for consistency.

Signed-off-by: Josh Richards <[email protected]>

core/Command/Db/ConvertType.php

@@ -167,10 +167,13 @@ protected function readPassword(InputInterface $input, OutputInterface $output)
  if ($input->isInteractive()) {
  /** @var QuestionHelper $helper */
  $helper = $this->getHelper('question');
- $question = new Question('What is the database password?');
+ $question = new Question('What is the database password (press <enter> for none)? ');
  $question->setHidden(true);
  $question->setHiddenFallback(false);
  $password = $helper->ask($input, $output, $question);
+ if ($password === null) {
+ $password = ''; // possibly unnecessary
+ }
  $input->setOption('password', $password);
  return;
  }
@@ -254,6 +257,16 @@ protected function getToDBConnection(InputInterface $input, OutputInterface $out
  if ($input->getOption('port')) {
  $connectionParams['port'] = $input->getOption('port');
  }
+ if (strpos($input->getOption('hostname'), ':') !== false) {
+ // Host variable may carry a socket (or port)
+ [$host, $portOrSocket] = explode(':', $input->getOption('hostname'), 2);
+ if (ctype_digit($portOrSocket)) {
+ $connectionParams['port'] = $portOrSocket; // to be consistent with how we handle this elsewhere we accept this too but don't document it
+ } else {
+ $connectionParams['unix_socket'] = $portOrSocket;
+ }
+ $connectionParams['host'] = $host;
+ }
  return $this->connectionFactory->getConnection($type, $connectionParams);
  }