private static function validateJSONItem($json, $libraryID, Zotero_Item $item = null, $isChild, $requestParams, $partialUpdate = false)
{
$isNew = !$item || !$item->version;
if (!is_object($json)) {
throw new Exception("Invalid item object (found " . gettype($json) . " '" . $json . "')", Z_ERROR_INVALID_INPUT);
}
if (isset($json->items) && is_array($json->items)) {
throw new Exception("An 'items' array is not valid for single-item updates", Z_ERROR_INVALID_INPUT);
}
$apiVersion = $requestParams['v'];
if ($partialUpdate) {
$requiredProps = [];
} else {
if (isset($json->itemType) && $json->itemType == "attachment") {
$requiredProps = array('linkMode', 'tags');
} else {
if (isset($json->itemType) && $json->itemType == "attachment") {
$requiredProps = array('tags');
} else {
if ($isNew) {
$requiredProps = array('itemType');
} else {
if ($apiVersion < 2) {
$requiredProps = array('itemType', 'tags');
} else {
$requiredProps = array('itemType', 'tags', 'relations');
if (!$isChild) {
$requiredProps[] = 'collections';
}
}
}
}
}
}
foreach ($requiredProps as $prop) {
if (!isset($json->{$prop})) {
throw new Exception("'{$prop}' property not provided", Z_ERROR_INVALID_INPUT);
}
}
// For partial updates where item type isn't provided, use the existing item type
if (!isset($json->itemType) && $partialUpdate) {
$itemType = Zotero_ItemTypes::getName($item->itemTypeID);
} else {
$itemType = $json->itemType;
}
foreach ($json as $key => $val) {
switch ($key) {
// Handled by Zotero_API::checkJSONObjectVersion()
case 'key':
case 'version':
if ($apiVersion < 3) {
throw new Exception("Invalid property '{$key}'", Z_ERROR_INVALID_INPUT);
}
break;
case 'itemKey':
case 'itemVersion':
if ($apiVersion != 2) {
throw new Exception("Invalid property '{$key}'", Z_ERROR_INVALID_INPUT);
}
break;
case 'parentItem':
if ($apiVersion < 2) {
throw new Exception("Invalid property '{$key}'", Z_ERROR_INVALID_INPUT);
}
if (!Zotero_ID::isValidKey($val) && $val !== false) {
throw new Exception("'{$key}' must be a valid item key", Z_ERROR_INVALID_INPUT);
}
break;
case 'itemType':
if (!is_string($val)) {
throw new Exception("'itemType' must be a string", Z_ERROR_INVALID_INPUT);
}
if ($isChild || !empty($json->parentItem)) {
switch ($val) {
case 'note':
case 'attachment':
break;
default:
throw new Exception("Child item must be note or attachment", Z_ERROR_INVALID_INPUT);
}
} else {
if ($val == 'attachment' && (!$item || !$item->getSource())) {
if ($json->linkMode == 'linked_url' || $json->linkMode == 'imported_url' && (empty($json->contentType) || $json->contentType != 'application/pdf')) {
throw new Exception("Only file attachments and PDFs can be top-level items", Z_ERROR_INVALID_INPUT);
}
}
}
if (!Zotero_ItemTypes::getID($val)) {
throw new Exception("'{$val}' is not a valid itemType", Z_ERROR_INVALID_INPUT);
}
break;
case 'tags':
if (!is_array($val)) {
throw new Exception("'{$key}' property must be an array", Z_ERROR_INVALID_INPUT);
}
foreach ($val as $tag) {
$empty = true;
if (is_string($tag)) {
if ($tag === "") {
throw new Exception("Tag cannot be empty", Z_ERROR_INVALID_INPUT);
}
continue;
}
if (!is_object($tag)) {
throw new Exception("Tag must be an object", Z_ERROR_INVALID_INPUT);
}
foreach ($tag as $k => $v) {
switch ($k) {
case 'tag':
if (!is_scalar($v)) {
throw new Exception("Invalid tag name", Z_ERROR_INVALID_INPUT);
}
if ($v === "") {
throw new Exception("Tag cannot be empty", Z_ERROR_INVALID_INPUT);
}
break;
case 'type':
if (!is_numeric($v)) {
throw new Exception("Invalid tag type '{$v}'", Z_ERROR_INVALID_INPUT);
}
break;
default:
throw new Exception("Invalid tag property '{$k}'", Z_ERROR_INVALID_INPUT);
}
$empty = false;
}
if ($empty) {
throw new Exception("Tag object is empty", Z_ERROR_INVALID_INPUT);
}
}
break;
case 'collections':
if (!is_array($val)) {
throw new Exception("'{$key}' property must be an array", Z_ERROR_INVALID_INPUT);
}
if ($isChild && $val) {
throw new Exception("Child items cannot be assigned to collections", Z_ERROR_INVALID_INPUT);
}
foreach ($val as $k) {
if (!Zotero_ID::isValidKey($k)) {
throw new Exception("'{$k}' is not a valid collection key", Z_ERROR_INVALID_INPUT);
}
}
break;
case 'relations':
if ($apiVersion < 2) {
throw new Exception("Invalid property '{$key}'", Z_ERROR_INVALID_INPUT);
}
if (!is_object($val) && !(is_array($val) && empty($val))) {
throw new Exception("'{$key}' property must be an object", Z_ERROR_INVALID_INPUT);
}
foreach ($val as $predicate => $object) {
switch ($predicate) {
case 'owl:sameAs':
case 'dc:replaces':
case 'dc:relation':
break;
default:
throw new Exception("Unsupported predicate '{$predicate}'", Z_ERROR_INVALID_INPUT);
}
$arr = is_string($object) ? [$object] : $object;
foreach ($arr as $uri) {
if (!preg_match('/^http:\\/\\/zotero.org\\/(users|groups)\\/[0-9]+\\/(publications\\/)?items\\/[A-Z0-9]{8}$/', $uri)) {
throw new Exception("'{$key}' values currently must be Zotero item URIs", Z_ERROR_INVALID_INPUT);
}
}
}
break;
case 'creators':
if (!is_array($val)) {
throw new Exception("'{$key}' property must be an array", Z_ERROR_INVALID_INPUT);
}
foreach ($val as $creator) {
$empty = true;
if (!isset($creator->creatorType)) {
throw new Exception("creator object must contain 'creatorType'", Z_ERROR_INVALID_INPUT);
}
if ((!isset($creator->name) || trim($creator->name) == "") && (!isset($creator->firstName) || trim($creator->firstName) == "") && (!isset($creator->lastName) || trim($creator->lastName) == "")) {
// On item creation, ignore single nameless creator,
// because that's in the item template that the API returns
if (sizeOf($val) == 1 && $isNew) {
continue;
} else {
throw new Exception("creator object must contain 'firstName'/'lastName' or 'name'", Z_ERROR_INVALID_INPUT);
}
}
foreach ($creator as $k => $v) {
switch ($k) {
case 'creatorType':
$creatorTypeID = Zotero_CreatorTypes::getID($v);
if (!$creatorTypeID) {
throw new Exception("'{$v}' is not a valid creator type", Z_ERROR_INVALID_INPUT);
}
$itemTypeID = Zotero_ItemTypes::getID($itemType);
if (!Zotero_CreatorTypes::isValidForItemType($creatorTypeID, $itemTypeID)) {
// Allow 'author' in all item types, but reject other invalid creator types
if ($creatorTypeID != Zotero_CreatorTypes::getID('author')) {
throw new Exception("'{$v}' is not a valid creator type for item type '{$itemType}'", Z_ERROR_INVALID_INPUT);
}
}
break;
case 'firstName':
if (!isset($creator->lastName)) {
throw new Exception("'lastName' creator field must be set if 'firstName' is set", Z_ERROR_INVALID_INPUT);
}
if (isset($creator->name)) {
throw new Exception("'firstName' and 'name' creator fields are mutually exclusive", Z_ERROR_INVALID_INPUT);
}
break;
case 'lastName':
if (!isset($creator->firstName)) {
throw new Exception("'firstName' creator field must be set if 'lastName' is set", Z_ERROR_INVALID_INPUT);
}
if (isset($creator->name)) {
throw new Exception("'lastName' and 'name' creator fields are mutually exclusive", Z_ERROR_INVALID_INPUT);
}
break;
case 'name':
if (isset($creator->firstName)) {
throw new Exception("'firstName' and 'name' creator fields are mutually exclusive", Z_ERROR_INVALID_INPUT);
}
if (isset($creator->lastName)) {
throw new Exception("'lastName' and 'name' creator fields are mutually exclusive", Z_ERROR_INVALID_INPUT);
}
break;
default:
throw new Exception("Invalid creator property '{$k}'", Z_ERROR_INVALID_INPUT);
}
$empty = false;
}
if ($empty) {
throw new Exception("Creator object is empty", Z_ERROR_INVALID_INPUT);
}
}
break;
case 'note':
switch ($itemType) {
case 'note':
case 'attachment':
break;
default:
throw new Exception("'note' property is valid only for note and attachment items", Z_ERROR_INVALID_INPUT);
}
break;
case 'attachments':
case 'notes':
if ($apiVersion > 1) {
throw new Exception("'{$key}' property is no longer supported", Z_ERROR_INVALID_INPUT);
}
if (!$isNew) {
throw new Exception("'{$key}' property is valid only for new items", Z_ERROR_INVALID_INPUT);
}
if (!is_array($val)) {
throw new Exception("'{$key}' property must be an array", Z_ERROR_INVALID_INPUT);
}
foreach ($val as $child) {
// Check child item type ('attachment' or 'note')
$t = substr($key, 0, -1);
if (isset($child->itemType) && $child->itemType != $t) {
throw new Exception("Child {$t} must be of itemType '{$t}'", Z_ERROR_INVALID_INPUT);
}
if ($key == 'note') {
if (!isset($child->note)) {
throw new Exception("'note' property not provided for child note", Z_ERROR_INVALID_INPUT);
}
}
}
break;
case 'deleted':
break;
// Attachment properties
// Attachment properties
case 'linkMode':
try {
$linkMode = Zotero_Attachments::linkModeNameToNumber($val, true);
} catch (Exception $e) {
throw new Exception("'{$val}' is not a valid linkMode", Z_ERROR_INVALID_INPUT);
}
// Don't allow changing of linkMode
if (!$isNew && $linkMode != $item->attachmentLinkMode) {
throw new Exception("Cannot change attachment linkMode", Z_ERROR_INVALID_INPUT);
}
break;
case 'contentType':
case 'charset':
case 'filename':
case 'md5':
case 'mtime':
if ($itemType != 'attachment') {
throw new Exception("'{$key}' is valid only for attachment items", Z_ERROR_INVALID_INPUT);
}
switch ($key) {
case 'filename':
case 'md5':
case 'mtime':
$lm = isset($json->linkMode) ? $json->linkMode : Zotero_Attachments::linkModeNumberToName($item->attachmentLinkMode);
if (strpos(strtolower($lm), 'imported_') !== 0) {
throw new Exception("'{$key}' is valid only for imported attachment items", Z_ERROR_INVALID_INPUT);
}
break;
}
switch ($key) {
case 'contentType':
case 'charset':
case 'filename':
$propName = 'attachment' . ucwords($key);
break;
case 'md5':
$propName = 'attachmentStorageHash';
break;
case 'mtime':
$propName = 'attachmentStorageModTime';
break;
}
if (Zotero_Libraries::getType($libraryID) == 'group') {
if ($item && $item->{$propName} !== $val || !$item && $val !== null && $val !== "") {
throw new Exception("Cannot change '{$key}' directly in group library", Z_ERROR_INVALID_INPUT);
}
} else {
if ($key == 'md5') {
if ($val && !preg_match("/^[a-f0-9]{32}\$/", $val)) {
throw new Exception("'{$val}' is not a valid MD5 hash", Z_ERROR_INVALID_INPUT);
}
}
}
break;
case 'accessDate':
if ($apiVersion >= 3 && $val !== '' && $val != 'CURRENT_TIMESTAMP' && !Zotero_Date::isSQLDate($val) && !Zotero_Date::isSQLDateTime($val) && !Zotero_Date::isISO8601($val)) {
throw new Exception("'{$key}' must be in ISO 8601 or UTC 'YYYY-MM-DD[ hh-mm-dd]' format or 'CURRENT_TIMESTAMP' ({$val})", Z_ERROR_INVALID_INPUT);
}
break;
case 'dateAdded':
if (!Zotero_Date::isSQLDateTime($val) && !Zotero_Date::isISO8601($val)) {
throw new Exception("'{$key}' must be in ISO 8601 or UTC 'YYYY-MM-DD hh-mm-dd' format", Z_ERROR_INVALID_INPUT);
}
if (!$isNew) {
// Convert ISO date to SQL date for equality comparison
if (Zotero_Date::isISO8601($val)) {
$val = Zotero_Date::iso8601ToSQL($val);
}
if ($val != $item->{$key}) {
throw new Exception("'{$key}' cannot be modified for existing items", Z_ERROR_INVALID_INPUT);
}
}
break;
case 'dateModified':
if (!Zotero_Date::isSQLDateTime($val) && !Zotero_Date::isISO8601($val)) {
throw new Exception("'{$key}' must be in ISO 8601 or UTC 'YYYY-MM-DD hh-mm-dd' format ({$val})", Z_ERROR_INVALID_INPUT);
}
break;
default:
if (!Zotero_ItemFields::getID($key)) {
throw new Exception("Invalid property '{$key}'", Z_ERROR_INVALID_INPUT);
}
if (is_array($val)) {
throw new Exception("Unexpected array for property '{$key}'", Z_ERROR_INVALID_INPUT);
}
break;
}
}
// Publications libraries have additional restrictions
if (Zotero_Libraries::getType($libraryID) == 'publications') {
Zotero_Publications::validateJSONItem($json);
}
}
/**
* Converts a Zotero_Item object to a SimpleXMLElement item
*
* @param object $item Zotero_Item object
* @param array $data
* @return SimpleXMLElement Item data as SimpleXML element
*/
public static function convertItemToXML(Zotero_Item $item, $data = array(), $apiVersion = null)
{
$xml = new SimpleXMLElement('<item/>');
// Primary fields
foreach (Zotero_Items::$primaryFields as $field) {
switch ($field) {
case 'itemID':
case 'serverDateModified':
case 'itemVersion':
case 'numAttachments':
case 'numNotes':
continue 2;
case 'itemTypeID':
$xmlField = 'itemType';
$xmlValue = Zotero_ItemTypes::getName($item->{$field});
break;
default:
$xmlField = $field;
$xmlValue = $item->{$field};
}
$xml[$xmlField] = $xmlValue;
}
// Item data
$fieldIDs = $item->getUsedFields();
foreach ($fieldIDs as $fieldID) {
$val = $item->getField($fieldID);
if ($val == '') {
continue;
}
$f = $xml->addChild('field', htmlspecialchars($val));
$f['name'] = htmlspecialchars(Zotero_ItemFields::getName($fieldID));
}
// Deleted item flag
if ($item->deleted) {
$xml['deleted'] = '1';
}
if ($item->isNote() || $item->isAttachment()) {
$sourceItemID = $item->getSource();
if ($sourceItemID) {
$sourceItem = Zotero_Items::get($item->libraryID, $sourceItemID);
if (!$sourceItem) {
throw new Exception("Source item {$sourceItemID} not found");
}
$xml['sourceItem'] = $sourceItem->key;
}
}
// Group modification info
$createdByUserID = null;
$lastModifiedByUserID = null;
switch (Zotero_Libraries::getType($item->libraryID)) {
case 'group':
$createdByUserID = $item->createdByUserID;
$lastModifiedByUserID = $item->lastModifiedByUserID;
break;
}
if ($createdByUserID) {
$xml['createdByUserID'] = $createdByUserID;
}
if ($lastModifiedByUserID) {
$xml['lastModifiedByUserID'] = $lastModifiedByUserID;
}
if ($item->isAttachment()) {
$xml['linkMode'] = $item->attachmentLinkMode;
$xml['mimeType'] = $item->attachmentMIMEType;
if ($apiVersion == 1 || $item->attachmentCharset) {
$xml['charset'] = $item->attachmentCharset;
}
$storageModTime = $item->attachmentStorageModTime;
if ($apiVersion > 1 && $storageModTime) {
$xml['storageModTime'] = $storageModTime;
}
$storageHash = $item->attachmentStorageHash;
if ($apiVersion > 1 && $storageHash) {
$xml['storageHash'] = $storageHash;
}
// TODO: get from a constant
if ($item->attachmentLinkMode != 3) {
$xml->addChild('path', htmlspecialchars($item->attachmentPath));
}
}
// Note
if ($item->isNote() || $item->isAttachment()) {
// Get htmlspecialchars'ed note
$note = $item->getNote(false, true);
if ($note !== '') {
$xml->addChild('note', $note);
} else {
if ($item->isNote()) {
$xml->addChild('note', '');
}
}
}
// Creators
$creators = $item->getCreators();
if ($creators) {
foreach ($creators as $index => $creator) {
$c = $xml->addChild('creator');
$c['key'] = $creator['ref']->key;
$c['creatorType'] = htmlspecialchars(Zotero_CreatorTypes::getName($creator['creatorTypeID']));
$c['index'] = $index;
if (empty($data['updatedCreators']) || !in_array($creator['ref']->id, $data['updatedCreators'])) {
$cNode = dom_import_simplexml($c);
$creatorXML = Zotero_Creators::convertCreatorToXML($creator['ref'], $cNode->ownerDocument);
$cNode->appendChild($creatorXML);
}
}
}
// Related items
$related = $item->relatedItems;
if ($related) {
$related = Zotero_Items::get($item->libraryID, $related);
$keys = array();
foreach ($related as $item) {
$keys[] = $item->key;
}
if ($keys) {
$xml->related = implode(' ', $keys);
}
}
return $xml;
}
