<?php
namespace Sabre\CardDAV\Backend;
use Sabre\CardDAV;
use Sabre\DAV;
/**
* PDO CardDAV backend
*
* This CardDAV backend uses PDO to store addressbooks
*
* @copyright Copyright (C) 2007-2013 fruux GmbH (https://fruux.com/).
* @author Evert Pot (http://evertpot.com/)
* @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
*/
class PDO extends AbstractBackend {
/**
* PDO connection
*
* @var PDO
*/
protected $pdo;
/**
* The PDO table name used to store addressbooks
*/
protected $addressBooksTableName;
/**
* The PDO table name used to store cards
*/
protected $cardsTableName;
/**
* Sets up the object
*
* @param \PDO $pdo
* @param string $addressBooksTableName
* @param string $cardsTableName
*/
public function __construct(\PDO $pdo, $addressBooksTableName = 'addressbooks', $cardsTableName = 'cards') {
$this->pdo = $pdo;
$this->addressBooksTableName = $addressBooksTableName;
$this->cardsTableName = $cardsTableName;
}
/**
* Returns the list of addressbooks for a specific user.
*
* @param string $principalUri
* @return array
*/
public function getAddressBooksForUser($principalUri) {
$stmt = $this->pdo->prepare('SELECT id, uri, displayname, principaluri, description, ctag FROM '.$this->addressBooksTableName.' WHERE principaluri = ?');
$stmt->execute(array($principalUri));
$addressBooks = array();
foreach($stmt->fetchAll() as $row) {
$addressBooks[] = array(
'id' => $row['id'],
'uri' => $row['uri'],
'principaluri' => $row['principaluri'],
'{DAV:}displayname' => $row['displayname'],
'{' . CardDAV\Plugin::NS_CARDDAV . '}addressbook-description' => $row['description'],
'{http://calendarserver.org/ns/}getctag' => $row['ctag'],
'{' . CardDAV\Plugin::NS_CARDDAV . '}supported-address-data' =>
new CardDAV\Property\SupportedAddressData(),
);
}
return $addressBooks;
}
/**
* Updates an addressbook's properties
*
* See Sabre\DAV\IProperties for a description of the mutations array, as
* well as the return value.
*
* @param mixed $addressBookId
* @param array $mutations
* @see Sabre\DAV\IProperties::updateProperties
* @return bool|array
*/
public function updateAddressBook($addressBookId, array $mutations) {
$updates = array();
foreach($mutations as $property=>$newValue) {
switch($property) {
case '{DAV:}displayname' :
$updates['displayname'] = $newValue;
break;
case '{' . CardDAV\Plugin::NS_CARDDAV . '}addressbook-description' :
$updates['description'] = $newValue;
break;
default :
// If any unsupported values were being updated, we must
// let the entire request fail.
return false;
}
}
// No values are being updated?
if (!$updates) {
return false;
}
$query = 'UPDATE ' . $this->addressBooksTableName . ' SET ctag = ctag + 1 ';
foreach($updates as $key=>$value) {
$query.=', `' . $key . '` = :' . $key . ' ';
}
$query.=' WHERE id = :addressbookid';
$stmt = $this->pdo->prepare($query);
$updates['addressbookid'] = $addressBookId;
$stmt->execute($updates);
return true;
}
/**
* Creates a new address book
*
* @param string $principalUri
* @param string $url Just the 'basename' of the url.
* @param array $properties
* @return void
*/
public function createAddressBook($principalUri, $url, array $properties) {
$values = array(
'displayname' => null,
'description' => null,
'principaluri' => $principalUri,
'uri' => $url,
);
foreach($properties as $property=>$newValue) {
switch($property) {
case '{DAV:}displayname' :
$values['displayname'] = $newValue;
break;
case '{' . CardDAV\Plugin::NS_CARDDAV . '}addressbook-description' :
$values['description'] = $newValue;
break;
default :
throw new DAV\Exception\BadRequest('Unknown property: ' . $property);
}
}
$query = 'INSERT INTO ' . $this->addressBooksTableName . ' (uri, displayname, description, principaluri, ctag) VALUES (:uri, :displayname, :description, :principaluri, 1)';
$stmt = $this->pdo->prepare($query);
$stmt->execute($values);
}
/**
* Deletes an entire addressbook and all its contents
*
* @param int $addressBookId
* @return void
*/
public function deleteAddressBook($addressBookId) {
$stmt = $this->pdo->prepare('DELETE FROM ' . $this->cardsTableName . ' WHERE addressbookid = ?');
$stmt->execute(array($addressBookId));
$stmt = $this->pdo->prepare('DELETE FROM ' . $this->addressBooksTableName . ' WHERE id = ?');
$stmt->execute(array($addressBookId));
}
/**
* Returns all cards for a specific addressbook id.
*
* This method should return the following properties for each card:
* * carddata - raw vcard data
* * uri - Some unique url
* * lastmodified - A unix timestamp
*
* It's recommended to also return the following properties:
* * etag - A unique etag. This must change every time the card changes.
* * size - The size of the card in bytes.
*
* If these last two properties are provided, less time will be spent
* calculating them. If they are specified, you can also ommit carddata.
* This may speed up certain requests, especially with large cards.
*
* @param mixed $addressbookId
* @return array
*/
public function getCards($addressbookId) {
$stmt = $this->pdo->prepare('SELECT id, carddata, uri, lastmodified FROM ' . $this->cardsTableName . ' WHERE addressbookid = ?');
$stmt->execute(array($addressbookId));
return $stmt->fetchAll(\PDO::FETCH_ASSOC);
}
/**
* Returns a specfic card.
*
* The same set of properties must be returned as with getCards. The only
* exception is that 'carddata' is absolutely required.
*
* @param mixed $addressBookId
* @param string $cardUri
* @return array
*/
public function getCard($addressBookId, $cardUri) {
$stmt = $this->pdo->prepare('SELECT id, carddata, uri, lastmodified FROM ' . $this->cardsTableName . ' WHERE addressbookid = ? AND uri = ? LIMIT 1');
$stmt->execute(array($addressBookId, $cardUri));
$result = $stmt->fetchAll(\PDO::FETCH_ASSOC);
return (count($result)>0?$result[0]:false);
}
/**
* Creates a new card.
*
* The addressbook id will be passed as the first argument. This is the
* same id as it is returned from the getAddressbooksForUser method.
*
* The cardUri is a base uri, and doesn't include the full path. The
* cardData argument is the vcard body, and is passed as a string.
*
* It is possible to return an ETag from this method. This ETag is for the
* newly created resource, and must be enclosed with double quotes (that
* is, the string itself must contain the double quotes).
*
* You should only return the ETag if you store the carddata as-is. If a
* subsequent GET request on the same card does not have the same body,
* byte-by-byte and you did return an ETag here, clients tend to get
* confused.
*
* If you don't return an ETag, you can just return null.
*
* @param mixed $addressBookId
* @param string $cardUri
* @param string $cardData
* @return string|null
*/
public function createCard($addressBookId, $cardUri, $cardData) {
$stmt = $this->pdo->prepare('INSERT INTO ' . $this->cardsTableName . ' (carddata, uri, lastmodified, addressbookid) VALUES (?, ?, ?, ?)');
$result = $stmt->execute(array($cardData, $cardUri, time(), $addressBookId));
$stmt2 = $this->pdo->prepare('UPDATE ' . $this->addressBooksTableName . ' SET ctag = ctag + 1 WHERE id = ?');
$stmt2->execute(array($addressBookId));
return '"' . md5($cardData) . '"';
}
/**
* Updates a card.
*
* The addressbook id will be passed as the first argument. This is the
* same id as it is returned from the getAddressbooksForUser method.
*
* The cardUri is a base uri, and doesn't include the full path. The
* cardData argument is the vcard body, and is passed as a string.
*
* It is possible to return an ETag from this method. This ETag should
* match that of the updated resource, and must be enclosed with double
* quotes (that is: the string itself must contain the actual quotes).
*
* You should only return the ETag if you store the carddata as-is. If a
* subsequent GET request on the same card does not have the same body,
* byte-by-byte and you did return an ETag here, clients tend to get
* confused.
*
* If you don't return an ETag, you can just return null.
*
* @param mixed $addressBookId
* @param string $cardUri
* @param string $cardData
* @return string|null
*/
public function updateCard($addressBookId, $cardUri, $cardData) {
$stmt = $this->pdo->prepare('UPDATE ' . $this->cardsTableName . ' SET carddata = ?, lastmodified = ? WHERE uri = ? AND addressbookid =?');
$stmt->execute(array($cardData, time(), $cardUri, $addressBookId));
$stmt2 = $this->pdo->prepare('UPDATE ' . $this->addressBooksTableName . ' SET ctag = ctag + 1 WHERE id = ?');
$stmt2->execute(array($addressBookId));
return '"' . md5($cardData) . '"';
}
/**
* Deletes a card
*
* @param mixed $addressBookId
* @param string $cardUri
* @return bool
*/
public function deleteCard($addressBookId, $cardUri) {
$stmt = $this->pdo->prepare('DELETE FROM ' . $this->cardsTableName . ' WHERE addressbookid = ? AND uri = ?');
$stmt->execute(array($addressBookId, $cardUri));
$stmt2 = $this->pdo->prepare('UPDATE ' . $this->addressBooksTableName . ' SET ctag = ctag + 1 WHERE id = ?');
$stmt2->execute(array($addressBookId));
return $stmt->rowCount()===1;
}
}
