Cedric
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<?php
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/**
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* Normalise le mot de passe d’application Apple (supprime les espaces, garde les tirets).
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*/
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function hh_normalize_apple_app_password(string $password): string
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{
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return preg_replace('/\s+/', '', trim($password));
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}
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function hh_caldav_is_icloud_well_known_root(string $url): bool
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{
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$parts = parse_url(rtrim(trim($url), '/'));
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if (empty($parts['scheme']) || empty($parts['host'])) {
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return false;
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}
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$host = strtolower($parts['host']);
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if ($host !== 'caldav.icloud.com') {
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return false;
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}
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$path = $parts['path'] ?? '';
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return $path === '' || $path === '/';
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}
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function hh_caldav_resolve_href(string $againstUrl, string $href): string
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{
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$href = trim($href);
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if ($href === '') {
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return $againstUrl;
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}
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if (str_starts_with($href, 'http://') || str_starts_with($href, 'https://')) {
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return $href;
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}
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$parts = parse_url($againstUrl);
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$scheme = $parts['scheme'] ?? 'https';
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$host = $parts['host'] ?? '';
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$port = isset($parts['port']) ? ':' . $parts['port'] : '';
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if ($href[0] === '/') {
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return $scheme . '://' . $host . $port . $href;
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}
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$base = preg_replace('#/[^/]*$#', '/', $againstUrl);
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return rtrim($base, '/') . '/' . ltrim($href, '/');
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}
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/**
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* @return array{code:int, body:string}
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*/
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function hh_caldav_propfind(string $url, string $username, string $password, string $xml, string $depth = '0'): array
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{
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$ch = curl_init($url);
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curl_setopt_array($ch, [
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CURLOPT_RETURNTRANSFER => true,
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CURLOPT_TIMEOUT => 25,
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CURLOPT_CUSTOMREQUEST => 'PROPFIND',
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CURLOPT_HTTPAUTH => CURLAUTH_BASIC,
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CURLOPT_USERPWD => $username . ':' . $password,
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CURLOPT_HTTPHEADER => [
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'Content-Type: application/xml; charset=utf-8',
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'Depth: ' . $depth,
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],
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CURLOPT_POSTFIELDS => $xml,
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CURLOPT_FOLLOWLOCATION => true,
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CURLOPT_MAXREDIRS => 10,
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]);
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$body = curl_exec($ch);
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$code = (int) curl_getinfo($ch, CURLINFO_HTTP_CODE);
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curl_close($ch);
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if ($body === false) {
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return ['code' => 0, 'body' => ''];
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}
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return ['code' => $code, 'body' => $body];
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}
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function hh_caldav_first_href_by_element(string $xml, string $parentLocalName): ?string
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{
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$dom = new DOMDocument();
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if (!@$dom->loadXML($xml)) {
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return null;
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}
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$xpath = new DOMXPath($dom);
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$nodes = $xpath->query("//*[local-name()='{$parentLocalName}']//*[local-name()='href']");
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if ($nodes->length === 0) {
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return null;
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}
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return trim($nodes->item(0)->textContent);
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}
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/**
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* @return list<array{href:string, display:string}>
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*/
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function hh_caldav_parse_calendar_collections(string $xml): array
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{
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$dom = new DOMDocument();
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if (!@$dom->loadXML($xml)) {
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return [];
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}
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$xpath = new DOMXPath($dom);
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$responses = $xpath->query("//*[local-name()='response']");
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$out = [];
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foreach ($responses as $resp) {
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$hrefNodes = $xpath->query(".//*[local-name()='href']", $resp);
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if ($hrefNodes->length === 0) {
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continue;
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}
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$href = trim($hrefNodes->item(0)->textContent);
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$cal = $xpath->query(".//*[local-name()='resourcetype']/*[local-name()='calendar']", $resp);
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if ($cal->length === 0 || $href === '') {
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continue;
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}
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$display = '';
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$dn = $xpath->query(".//*[local-name()='displayname']", $resp);
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if ($dn->length > 0) {
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$display = trim($dn->item(0)->textContent);
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}
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$out[] = ['href' => $href, 'display' => $display];
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}
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return $out;
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}
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/**
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* Depuis la racine iCloud (https://caldav.icloud.com), découvre l’URL d’un calendrier (par défaut « Calendar » / « Calendrier », sinon le premier).
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*
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* @throws RuntimeException
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*/
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function hh_icloud_discover_default_calendar_url(string $username, string $password): string
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{
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$password = hh_normalize_apple_app_password($password);
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$root = 'https://caldav.icloud.com/';
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$xml1 = '<?xml version="1.0" encoding="UTF-8"?>'
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. '<propfind xmlns="DAV:">'
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. '<prop><current-user-principal/></prop>'
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. '</propfind>';
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$r1 = hh_caldav_propfind($root, $username, $password, $xml1, '0');
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if ($r1['code'] === 401 || $r1['code'] === 403) {
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throw new RuntimeException('Identifiant Apple ou mot de passe d’app refusé (HTTP ' . $r1['code'] . ').');
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}
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if (!in_array($r1['code'], [200, 207], true)) {
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throw new RuntimeException('CalDAV racine inaccessible (HTTP ' . $r1['code'] . ').');
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}
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$principalHref = hh_caldav_first_href_by_element($r1['body'], 'current-user-principal');
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if (!$principalHref) {
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throw new RuntimeException('Réponse CalDAV inattendue : principal introuvable.');
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}
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$principalUrl = hh_caldav_resolve_href($root, $principalHref);
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$xml2 = '<?xml version="1.0" encoding="UTF-8"?>'
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. '<propfind xmlns="DAV:" xmlns:C="urn:ietf:params:xml:ns:caldav">'
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. '<prop><C:calendar-home-set/></prop>'
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. '</propfind>';
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$r2 = hh_caldav_propfind($principalUrl, $username, $password, $xml2, '0');
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if (!in_array($r2['code'], [200, 207], true)) {
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throw new RuntimeException('Lecture du principal CalDAV impossible (HTTP ' . $r2['code'] . ').');
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}
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$homeHref = hh_caldav_first_href_by_element($r2['body'], 'calendar-home-set');
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if (!$homeHref) {
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throw new RuntimeException('Aucun dossier de calendriers (calendar-home-set) trouvé.');
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}
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$homeUrl = hh_caldav_resolve_href($principalUrl, $homeHref);
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$xml3 = '<?xml version="1.0" encoding="UTF-8"?>'
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. '<propfind xmlns="DAV:">'
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. '<prop><resourcetype/><displayname/></prop>'
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. '</propfind>';
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$r3 = hh_caldav_propfind($homeUrl, $username, $password, $xml3, '1');
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if (!in_array($r3['code'], [200, 207], true)) {
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throw new RuntimeException('Liste des calendriers impossible (HTTP ' . $r3['code'] . ').');
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}
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$entries = hh_caldav_parse_calendar_collections($r3['body']);
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if ($entries === []) {
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throw new RuntimeException('Aucun calendrier trouvé sur ce compte iCloud.');
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}
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$preferred = ['calendar', 'calendrier', 'home', 'par défaut', 'default'];
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$chosenHref = null;
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foreach ($entries as $e) {
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$lower = mb_strtolower($e['display']);
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foreach ($preferred as $p) {
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if ($lower !== '' && str_contains($lower, $p)) {
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$chosenHref = $e['href'];
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break 2;
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}
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}
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}
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if ($chosenHref === null) {
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$chosenHref = $entries[0]['href'];
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}
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return rtrim(hh_caldav_resolve_href($homeUrl, $chosenHref), '/') . '/';
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}
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/**
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* Vérifie qu’une URL de collection calendrier répond en CalDAV (PROPFIND).
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*/
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function hh_caldav_test_calendar_collection(string $username, string $password, string $calendarUrl): int
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{
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$password = hh_normalize_apple_app_password($password);
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$xml = '<?xml version="1.0" encoding="UTF-8"?>'
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. '<propfind xmlns="DAV:" xmlns:C="urn:ietf:params:xml:ns:caldav">'
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. '<prop><resourcetype/><displayname/><C:supported-calendar-component-set/></prop>'
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. '</propfind>';
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$r = hh_caldav_propfind(rtrim($calendarUrl, '/') . '/', $username, $password, $xml, '0');
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return $r['code'];
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}
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/**
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* Si URL = racine iCloud bien connue, découvre et retourne l’URL d’un calendrier ; sinon retourne l’URL telle quelle (trim).
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*
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* @throws RuntimeException
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*/
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function hh_icloud_resolve_calendar_url_if_needed(string $username, string $password, string $calendarUrl): string
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{
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$calendarUrl = trim($calendarUrl);
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if (hh_caldav_is_icloud_well_known_root($calendarUrl)) {
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return hh_icloud_discover_default_calendar_url($username, $password);
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}
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return $calendarUrl;
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}
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