generated from Nodarx/template
73 lines
1.8 KiB
PHP
73 lines
1.8 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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namespace KTXM\ProviderImap\Smtp;
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use KTXM\ProviderImap\Smtp\Protocol\Response\Response;
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/**
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* Parsed EHLO capabilities.
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*
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* The first line of an EHLO reply is the server greeting/domain; every
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* subsequent line is a capability keyword optionally followed by parameters
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* (e.g. "AUTH PLAIN LOGIN", "SIZE 35882577").
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*/
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final class SmtpCapabilities
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{
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/**
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* @param array<string,list<string>> $keywords capability keyword => parameters
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*/
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private function __construct(
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private readonly array $keywords,
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) {}
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public static function fromEhlo(Response $reply): self
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{
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$keywords = [];
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$lines = $reply->lines();
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// Skip the first line (greeting/domain); the rest are capabilities.
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foreach (array_slice($lines, 1) as $line) {
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$parts = preg_split('/\s+/', trim($line)) ?: [];
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$keyword = strtoupper((string) array_shift($parts));
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if ($keyword === '') {
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continue;
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}
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$keywords[$keyword] = array_map('strtoupper', $parts);
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}
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return new self($keywords);
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}
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public function has(string $keyword): bool
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{
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return isset($this->keywords[strtoupper($keyword)]);
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}
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public function supportsStartTls(): bool
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{
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return $this->has('STARTTLS');
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}
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/**
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* @return list<string> Advertised AUTH mechanisms (uppercased).
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*/
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public function authMechanisms(): array
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{
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return $this->keywords['AUTH'] ?? [];
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}
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public function maxSize(): ?int
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{
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$size = $this->keywords['SIZE'][0] ?? null;
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return $size !== null && ctype_digit($size) ? (int) $size : null;
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}
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}
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