mirror of
https://github.com/hyperion-project/hyperion.ng.git
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378 lines
8.9 KiB
C++
378 lines
8.9 KiB
C++
// stdlib includes
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#include <iterator>
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#include <sstream>
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#include <algorithm>
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#include <math.h>
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// Utils-Jsonschema includes
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#include <utils/jsonschema/QJsonSchemaChecker.h>
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QJsonSchemaChecker::QJsonSchemaChecker()
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{
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// empty
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}
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QJsonSchemaChecker::~QJsonSchemaChecker()
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{
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// empty
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}
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bool QJsonSchemaChecker::setSchema(const QJsonObject & schema)
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{
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_qSchema = schema;
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// TODO: check the schema
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return true;
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}
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bool QJsonSchemaChecker::validate(const QJsonObject & value)
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{
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// initialize state
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_error = false;
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_messages.clear();
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_currentPath.clear();
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_currentPath.push_back("[root]");
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// validate
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validate(value, _qSchema);
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return !_error;
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}
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void QJsonSchemaChecker::validate(const QJsonValue & value, const QJsonObject &schema)
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{
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// check the current json value
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for (QJsonObject::const_iterator i = schema.begin(); i != schema.end(); ++i)
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{
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QString attribute = i.key();
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const QJsonValue & attributeValue = *i;
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if (attribute == "type")
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checkType(value, attributeValue);
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else if (attribute == "properties")
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{
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if (value.isObject())
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checkProperties(value.toObject(), attributeValue.toObject());
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else
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{
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_error = true;
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setMessage("properties attribute is only valid for objects");
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continue;
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}
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}
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else if (attribute == "additionalProperties")
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{
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if (value.isObject())
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{
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// ignore the properties which are handled by the properties attribute (if present)
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QStringList ignoredProperties;
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if (schema.contains("properties")) {
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const QJsonObject & props = schema["properties"].toObject();
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ignoredProperties = props.keys();
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}
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checkAdditionalProperties(value.toObject(), attributeValue, ignoredProperties);
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}
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else
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{
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_error = true;
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setMessage("additional properties attribute is only valid for objects");
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continue;
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}
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}
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else if (attribute == "minimum")
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checkMinimum(value, attributeValue);
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else if (attribute == "maximum")
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checkMaximum(value, attributeValue);
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else if (attribute == "items")
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{
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if (value.isArray())
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checkItems(value, attributeValue.toObject());
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else
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{
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_error = true;
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setMessage("items only valid for arrays");
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continue;
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}
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}
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else if (attribute == "minItems")
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checkMinItems(value, attributeValue);
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else if (attribute == "maxItems")
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checkMaxItems(value, attributeValue);
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else if (attribute == "uniqueItems")
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checkUniqueItems(value, attributeValue);
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else if (attribute == "enum")
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checkEnum(value, attributeValue);
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else if (attribute == "required")
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; // nothing to do. value is present so always oke
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else if (attribute == "id")
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; // references have already been collected
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else if (attribute == "title" || attribute == "description" || attribute == "default")
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; // nothing to do.
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else
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{
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// no check function defined for this attribute
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setMessage(std::string("No check function defined for attribute ") + attribute.toStdString());
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continue;
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}
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}
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}
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void QJsonSchemaChecker::setMessage(const std::string & message)
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{
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std::ostringstream oss;
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std::copy(_currentPath.begin(), _currentPath.end(), std::ostream_iterator<std::string>(oss, ""));
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oss << ": " << message;
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_messages.push_back(oss.str());
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}
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const std::list<std::string> & QJsonSchemaChecker::getMessages() const
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{
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return _messages;
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}
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void QJsonSchemaChecker::checkType(const QJsonValue & value, const QJsonValue & schema)
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{
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QString type = schema.toString();
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bool wrongType = false;
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if (type == "string")
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wrongType = !value.isString();
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else if (type == "number")
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wrongType = !value.isDouble();
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else if (type == "integer")
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wrongType = (rint(value.toDouble()) != value.toDouble());
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else if (type == "double")
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wrongType = !value.isDouble();
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else if (type == "boolean")
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wrongType = !value.isBool();
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else if (type == "object")
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wrongType = !value.isObject();
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else if (type == "array")
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wrongType = !value.isArray();
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else if (type == "null")
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wrongType = !value.isNull();
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else if (type == "enum")
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wrongType = !value.isString();
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else if (type == "any")
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wrongType = false;
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// else
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// assert(false);
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if (wrongType)
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{
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_error = true;
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setMessage(type.toStdString() + " expected");
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}
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}
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void QJsonSchemaChecker::checkProperties(const QJsonObject & value, const QJsonObject & schema)
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{
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for (QJsonObject::const_iterator i = schema.begin(); i != schema.end(); ++i)
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{
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QString property = i.key();
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const QJsonValue & propertyValue = i.value();
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_currentPath.push_back(std::string(".") + property.toStdString());
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QJsonObject::const_iterator required = propertyValue.toObject().find("required");
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if (value.contains(property))
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{
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validate(value[property], propertyValue.toObject());
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}
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else if (required != propertyValue.toObject().end() && required.value().toBool())
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{
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_error = true;
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setMessage("missing member");
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}
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_currentPath.pop_back();
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}
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}
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void QJsonSchemaChecker::checkAdditionalProperties(const QJsonObject & value, const QJsonValue & schema, const QStringList & ignoredProperties)
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{
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for (QJsonObject::const_iterator i = value.begin(); i != value.end(); ++i)
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{
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QString property = i.key();
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if (std::find(ignoredProperties.begin(), ignoredProperties.end(), property) == ignoredProperties.end())
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{
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// property has no property definition. check against the definition for additional properties
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_currentPath.push_back(std::string(".") + property.toStdString());
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if (schema.isBool())
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{
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if (schema.toBool() == false)
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{
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_error = true;
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setMessage("no schema definition");
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}
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}
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else
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{
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validate(value[property].toObject(), schema.toObject());
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}
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_currentPath.pop_back();
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}
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}
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}
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void QJsonSchemaChecker::checkMinimum(const QJsonValue & value, const QJsonValue & schema)
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{
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if (!value.isDouble())
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{
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// only for numeric
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_error = true;
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setMessage("minimum check only for numeric fields");
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return;
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}
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if (value.toDouble() < schema.toDouble())
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{
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_error = true;
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std::ostringstream oss;
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oss << "value is too small (minimum=" << schema.toDouble() << ")";
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setMessage(oss.str());
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}
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}
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void QJsonSchemaChecker::checkMaximum(const QJsonValue & value, const QJsonValue & schema)
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{
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if (!value.isDouble())
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{
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// only for numeric
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_error = true;
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setMessage("maximum check only for numeric fields");
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return;
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}
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if (value.toDouble() > schema.toDouble())
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{
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_error = true;
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std::ostringstream oss;
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oss << "value is too large (maximum=" << schema.toDouble() << ")";
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setMessage(oss.str());
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}
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}
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void QJsonSchemaChecker::checkItems(const QJsonValue & value, const QJsonObject & schema)
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{
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if (!value.isArray())
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{
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// only for arrays
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_error = true;
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setMessage("items only valid for arrays");
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return;
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}
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QJsonArray jArray = value.toArray();
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for(int i = 0; i < jArray.size(); ++i)
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{
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// validate each item
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std::ostringstream oss;
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oss << "[" << i << "]";
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_currentPath.push_back(oss.str());
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validate(jArray[i].toObject(), schema);
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_currentPath.pop_back();
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}
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}
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void QJsonSchemaChecker::checkMinItems(const QJsonValue & value, const QJsonValue & schema)
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{
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if (!value.isArray())
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{
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// only for arrays
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_error = true;
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setMessage("minItems only valid for arrays");
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return;
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}
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int minimum = schema.toInt();
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QJsonArray jArray = value.toArray();
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if (static_cast<int>(jArray.size()) < minimum)
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{
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_error = true;
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std::ostringstream oss;
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oss << "array is too small (minimum=" << minimum << ")";
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setMessage(oss.str());
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}
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}
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void QJsonSchemaChecker::checkMaxItems(const QJsonValue & value, const QJsonValue & schema)
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{
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if (!value.isArray())
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{
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// only for arrays
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_error = true;
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setMessage("maxItems only valid for arrays");
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return;
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}
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int maximum = schema.toInt();
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QJsonArray jArray = value.toArray();
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if (static_cast<int>(jArray.size()) > maximum)
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{
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_error = true;
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std::ostringstream oss;
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oss << "array is too large (maximum=" << maximum << ")";
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setMessage(oss.str());
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}
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}
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void QJsonSchemaChecker::checkUniqueItems(const QJsonValue & value, const QJsonValue & schema)
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{
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if (!value.isArray())
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{
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// only for arrays
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_error = true;
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setMessage("uniqueItems only valid for arrays");
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return;
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}
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if (schema.toBool() == true)
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{
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// make sure no two items are identical
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QJsonArray jArray = value.toArray();
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for(int i = 0; i < jArray.size(); ++i)
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{
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for (int j = i+1; j < jArray.size(); ++j)
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{
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if (jArray[i] == jArray[j])
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{
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// found a value twice
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_error = true;
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setMessage("array must have unique values");
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}
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}
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}
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}
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}
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void QJsonSchemaChecker::checkEnum(const QJsonValue & value, const QJsonValue & schema)
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{
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if (schema.isArray())
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{
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QJsonArray jArray = schema.toArray();
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for(int i = 0; i < jArray.size(); ++i)
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{
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if (jArray[i] == value)
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{
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// found enum value. done.
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return;
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}
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}
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}
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// nothing found
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_error = true;
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std::ostringstream oss;
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oss << "Unknown enum value (allowed values are: " << schema.toString().toStdString();
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QJsonDocument doc(schema.toArray());
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QString strJson(doc.toJson(QJsonDocument::Compact));
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oss << strJson.toStdString() << ")";
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setMessage(oss.str());
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}
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