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https://github.com/the-djmaze/snappymail.git
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7c432e392b
Unfolding appended a newline before the continuation line, which kept its
own leading whitespace; Header turns the newline into a space, so every
fold became two spaces ("et checklist"), carried into reply subjects.
The test now compares exactly.
51 lines
2 KiB
PHP
51 lines
2 KiB
PHP
<?php
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// Run with: php test/header-unfold.php
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// RFC 5322 unfolding keeps the folding whitespace; RFC 2047 drops only the
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// whitespace BETWEEN two encoded words. A plain word followed by a folded
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// encoded word lost its space: "de vos\r\n =?utf-8?Q?=C3=A9quipements?="
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// was shown as "voséquipements" (Symfony Mailer folds subjects this way).
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define('APP_VERSION', 'test');
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spl_autoload_register(static function (string $class): void {
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if (str_starts_with($class, 'SnappyMail\\')) {
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$file = dirname(__DIR__).'/snappymail/v/0.0.0/app/libraries/snappymail/'.strtolower(str_replace('\\', '/', substr($class, 11))).'.php';
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} else {
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$file = dirname(__DIR__).'/snappymail/v/0.0.0/app/libraries/'.str_replace('\\', '/', $class).'.php';
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}
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if (is_file($file)) {
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require_once $file;
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}
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});
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function check(bool $condition, string $message): void
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{
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if (!$condition) {
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throw new RuntimeException($message);
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}
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}
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function subject(string $raw): string
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{
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$headers = new \MailSo\Mime\HeaderCollection("Subject: {$raw}\r\nX-Next: 1\r\n");
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return (string) $headers->ValueByName('Subject');
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}
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$cases = [
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// plain word, then a folded encoded word: the space stays
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"Traiter les =?utf-8?Q?vuln=C3=A9rabilit=C3=A9s?= de vos\r\n =?utf-8?Q?=C3=A9quipements?= : plan de =?utf-8?Q?rem=C3=A9diation?= et\r\n checklist =?utf-8?Q?sign=C3=A9e?="
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=> 'Traiter les vulnérabilités de vos équipements : plan de remédiation et checklist signée',
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// two encoded words split across lines: no space between them (RFC 2047 §6.2)
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"=?utf-8?Q?r=C3=A9pon?=\r\n =?utf-8?Q?se?=" => 'réponse',
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"=?utf-8?B?w6l0w6k=?=\r\n\t=?utf-8?B?IGZpbg==?=" => 'été fin',
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// encoded word, then a folded plain word: the space stays
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"=?utf-8?Q?r=C3=A9union?=\r\n demain" => 'réunion demain',
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// no encoding at all
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"Hello\r\n world" => 'Hello world',
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];
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foreach ($cases as $raw => $want) {
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// exact: a fold is one space, never two ("et checklist" ended up in replies)
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$got = subject($raw);
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check($got === $want, "got [{$got}], want [{$want}]");
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}
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echo "header-unfold: ".count($cases)." checks OK\n";
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