544 lines
15 KiB
C++
544 lines
15 KiB
C++
// stdlib includes
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#include <iterator>
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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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#include <utils/jsonschema/QJsonUtils.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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QPair<bool, bool> QJsonSchemaChecker::validate(const QJsonObject & value, bool ignoreRequired)
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{
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// initialize state
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_ignoreRequired = ignoreRequired;
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_error = false;
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_schemaError = false;
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_messages.clear();
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_currentPath.clear();
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_currentPath.append("[root]");
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// validate
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validate(value, _qSchema);
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return QPair<bool, bool>(!_error, !_schemaError);
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}
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QJsonObject QJsonSchemaChecker::getAutoCorrectedConfig(const QJsonObject& value, bool ignoreRequired)
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{
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_ignoreRequired = ignoreRequired;
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QStringList sequence = QStringList() << "remove" << "modify" << "create";
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_error = false;
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_schemaError = false;
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_messages.clear();
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_autoCorrected = value;
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for(const QString &correct : sequence)
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{
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_correct = correct;
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_currentPath.clear();
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_currentPath.append("[root]");
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validate(_autoCorrected, _qSchema);
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}
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return _autoCorrected;
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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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QJsonObject::const_iterator defaultValue = schema.find("default");
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if (attribute == "type")
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checkType(value, attributeValue, (defaultValue != schema.end() ? defaultValue.value() : QJsonValue::Null));
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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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_schemaError = 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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_schemaError = 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, (defaultValue != schema.end() ? defaultValue.value() : QJsonValue::Null));
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else if (attribute == "maximum")
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checkMaximum(value, attributeValue, (defaultValue != schema.end() ? defaultValue.value() : QJsonValue::Null));
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else if (attribute == "minLength")
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checkMinLength(value, attributeValue, (defaultValue != schema.end() ? defaultValue.value() : QJsonValue::Null));
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else if (attribute == "maxLength")
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checkMaxLength(value, attributeValue, (defaultValue != schema.end() ? defaultValue.value() : QJsonValue::Null));
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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, (defaultValue != schema.end() ? defaultValue.value() : QJsonValue::Null));
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else if (attribute == "maxItems")
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checkMaxItems(value, attributeValue, (defaultValue != schema.end() ? defaultValue.value() : QJsonValue::Null));
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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, (defaultValue != schema.end() ? defaultValue.value() : QJsonValue::Null));
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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" || attribute == "format"
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|| attribute == "defaultProperties" || attribute == "propertyOrder" || attribute == "append" || attribute == "step" || attribute == "access" || attribute == "options" || attribute == "script")
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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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_schemaError = true;
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setMessage("No check function defined for attribute " + attribute);
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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 QString & message)
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{
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_messages.append(_currentPath.join("") +": "+message);
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}
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const QStringList & 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, const QJsonValue & defaultValue)
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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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{
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if (value.isDouble()) //check if value type not boolean (true = 1 && false = 0)
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wrongType = (rint(value.toDouble()) != value.toDouble());
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else
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wrongType = true;
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}
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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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if (wrongType)
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{
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_error = true;
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if (_correct == "modify")
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QJsonUtils::modify(_autoCorrected, _currentPath, defaultValue);
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if (_correct == "")
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setMessage(type + " 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;
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_currentPath.append("." + property);
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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() && propertyValue.toObject().find("required").value().toBool() && !_ignoreRequired)
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{
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_error = true;
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if (_correct == "create")
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{
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QJsonUtils::modify(_autoCorrected, _currentPath, QJsonUtils::create(propertyValue, _ignoreRequired), property);
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setMessage("Create property: "+property+" with value: "+propertyValue.toObject().find("default").value().toString());
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}
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if (_correct == "")
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setMessage("missing member");
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}
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else if (_correct == "create" && _ignoreRequired)
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QJsonUtils::modify(_autoCorrected, _currentPath, QJsonUtils::create(propertyValue, _ignoreRequired), property);
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_currentPath.removeLast();
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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.append("." + property);
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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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if (_correct == "remove")
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{
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QJsonUtils::modify(_autoCorrected, _currentPath);
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setMessage("Removed property: "+property);
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}
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if (_correct == "")
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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.removeLast();
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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, const QJsonValue & defaultValue)
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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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if (_correct == "modify")
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{
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(defaultValue != QJsonValue::Null) ?
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QJsonUtils::modify(_autoCorrected, _currentPath, defaultValue) :
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QJsonUtils::modify(_autoCorrected, _currentPath, schema);
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setMessage("Correct too small value: "+QString::number(value.toDouble())+" to: "+QString::number(defaultValue.toDouble()));
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}
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if (_correct == "")
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setMessage("value is too small (minimum=" + QString::number(schema.toDouble()) + ")");
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}
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}
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void QJsonSchemaChecker::checkMaximum(const QJsonValue & value, const QJsonValue & schema, const QJsonValue & defaultValue)
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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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if (_correct == "modify")
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{
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(defaultValue != QJsonValue::Null) ?
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QJsonUtils::modify(_autoCorrected, _currentPath, defaultValue) :
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QJsonUtils::modify(_autoCorrected, _currentPath, schema);
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setMessage("Correct too large value: "+QString::number(value.toDouble())+" to: "+QString::number(defaultValue.toDouble()));
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}
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if (_correct == "")
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setMessage("value is too large (maximum=" + QString::number(schema.toDouble()) + ")");
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}
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}
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void QJsonSchemaChecker::checkMinLength(const QJsonValue & value, const QJsonValue & schema, const QJsonValue & defaultValue)
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{
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if (!value.isString())
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{
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// only for Strings
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_error = true;
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setMessage("minLength check only for string fields");
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return;
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}
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if (value.toString().size() < schema.toInt())
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{
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_error = true;
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if (_correct == "modify")
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{
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(defaultValue != QJsonValue::Null) ?
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QJsonUtils::modify(_autoCorrected, _currentPath, defaultValue) :
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QJsonUtils::modify(_autoCorrected, _currentPath, schema);
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setMessage("Correct too short value: "+value.toString()+" to: "+defaultValue.toString());
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}
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if (_correct == "")
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setMessage("value is too short (minLength=" + QString::number(schema.toInt()) + ")");
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}
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}
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void QJsonSchemaChecker::checkMaxLength(const QJsonValue & value, const QJsonValue & schema, const QJsonValue & defaultValue)
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{
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if (!value.isString())
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{
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// only for Strings
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_error = true;
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setMessage("maxLength check only for string fields");
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return;
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}
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if (value.toString().size() > schema.toInt())
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{
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_error = true;
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if (_correct == "modify")
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{
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(defaultValue != QJsonValue::Null) ?
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QJsonUtils::modify(_autoCorrected, _currentPath, defaultValue) :
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QJsonUtils::modify(_autoCorrected, _currentPath, schema);
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setMessage("Correct too long value: "+value.toString()+" to: "+defaultValue.toString());
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}
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if (_correct == "")
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setMessage("value is too long (maxLength=" + QString::number(schema.toInt()) + ")");
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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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if (_correct == "remove")
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if (jArray.isEmpty())
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{
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QJsonUtils::modify(_autoCorrected, _currentPath);
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setMessage("Remove empty array");
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}
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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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_currentPath.append("[" + QString::number(i) + "]");
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validate(jArray[i], schema);
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_currentPath.removeLast();
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}
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}
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void QJsonSchemaChecker::checkMinItems(const QJsonValue & value, const QJsonValue & schema, const QJsonValue & defaultValue)
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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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QJsonArray jArray = value.toArray();
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if (jArray.size() < schema.toInt())
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{
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_error = true;
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if (_correct == "modify")
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{
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(defaultValue != QJsonValue::Null) ?
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QJsonUtils::modify(_autoCorrected, _currentPath, defaultValue) :
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QJsonUtils::modify(_autoCorrected, _currentPath, schema);
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setMessage("Correct minItems: "+QString::number(jArray.size())+" to: "+QString::number(defaultValue.toArray().size()));
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}
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if (_correct == "")
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setMessage("array is too small (minimum=" + QString::number(schema.toInt()) + ")");
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}
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}
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void QJsonSchemaChecker::checkMaxItems(const QJsonValue & value, const QJsonValue & schema, const QJsonValue & defaultValue)
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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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QJsonArray jArray = value.toArray();
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if (jArray.size() > schema.toInt())
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{
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_error = true;
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if (_correct == "modify")
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{
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(defaultValue != QJsonValue::Null) ?
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QJsonUtils::modify(_autoCorrected, _currentPath, defaultValue) :
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QJsonUtils::modify(_autoCorrected, _currentPath, schema);
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setMessage("Correct maxItems: "+QString::number(jArray.size())+" to: "+QString::number(defaultValue.toArray().size()));
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}
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if (_correct == "")
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setMessage("array is too large (maximum=" + QString::number(schema.toInt()) + ")");
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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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bool removeDuplicates = false;
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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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removeDuplicates = true;
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if (_correct == "")
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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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if (removeDuplicates && _correct == "modify")
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{
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QJsonArray uniqueItemsArray;
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for(int i = 0; i < jArray.size(); ++i)
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if (!uniqueItemsArray.contains(jArray[i]))
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uniqueItemsArray.append(jArray[i]);
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QJsonUtils::modify(_autoCorrected, _currentPath, uniqueItemsArray);
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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, const QJsonValue & defaultValue)
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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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if (_correct == "modify")
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{
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(defaultValue != QJsonValue::Null) ?
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QJsonUtils::modify(_autoCorrected, _currentPath, defaultValue) :
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QJsonUtils::modify(_autoCorrected, _currentPath, schema.toArray().first());
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setMessage("Correct unknown enum value: "+value.toString()+" to: "+defaultValue.toString());
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}
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if (_correct == "")
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{
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QJsonDocument doc(schema.toArray());
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QString strJson(doc.toJson(QJsonDocument::Compact));
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setMessage("Unknown enum value (allowed values are: " + strJson+ ")");
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}
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}
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