diff options
Diffstat (limited to 'ext/bg/js/json-schema.js')
| -rw-r--r-- | ext/bg/js/json-schema.js | 202 |
1 files changed, 118 insertions, 84 deletions
diff --git a/ext/bg/js/json-schema.js b/ext/bg/js/json-schema.js index 84b27af5..b777ac09 100644 --- a/ext/bg/js/json-schema.js +++ b/ext/bg/js/json-schema.js @@ -15,10 +15,14 @@ * along with this program. If not, see <https://www.gnu.org/licenses/>. */ +/* global + * CacheMap + */ class JsonSchemaProxyHandler { - constructor(schema) { + constructor(schema, jsonSchemaValidator) { this._schema = schema; + this._jsonSchemaValidator = jsonSchemaValidator; } getPrototypeOf(target) { @@ -63,7 +67,7 @@ class JsonSchemaProxyHandler { } } - const propertySchema = JsonSchemaProxyHandler.getPropertySchema(this._schema, property, target); + const propertySchema = this._jsonSchemaValidator.getPropertySchema(this._schema, property, target); if (propertySchema === null) { return; } @@ -85,14 +89,14 @@ class JsonSchemaProxyHandler { } } - const propertySchema = JsonSchemaProxyHandler.getPropertySchema(this._schema, property, target); + const propertySchema = this._jsonSchemaValidator.getPropertySchema(this._schema, property, target); if (propertySchema === null) { throw new Error(`Property ${property} not supported`); } value = JsonSchema.clone(value); - JsonSchemaProxyHandler.validate(value, propertySchema, new JsonSchemaTraversalInfo(value, propertySchema)); + this._jsonSchemaValidator.validate(value, propertySchema, new JsonSchemaTraversalInfo(value, propertySchema)); target[property] = value; return true; @@ -117,16 +121,22 @@ class JsonSchemaProxyHandler { construct() { throw new Error('construct not supported'); } +} + +class JsonSchemaValidator { + constructor() { + this._regexCache = new CacheMap(100, (pattern, flags) => new RegExp(pattern, flags)); + } - static getPropertySchema(schema, property, value, path=null) { - const type = JsonSchemaProxyHandler.getSchemaOrValueType(schema, value); + getPropertySchema(schema, property, value, path=null) { + const type = this.getSchemaOrValueType(schema, value); switch (type) { case 'object': { const properties = schema.properties; - if (JsonSchemaProxyHandler.isObject(properties)) { + if (this.isObject(properties)) { const propertySchema = properties[property]; - if (JsonSchemaProxyHandler.isObject(propertySchema)) { + if (this.isObject(propertySchema)) { if (path !== null) { path.push(['properties', properties], [property, propertySchema]); } return propertySchema; } @@ -135,11 +145,11 @@ class JsonSchemaProxyHandler { const additionalProperties = schema.additionalProperties; if (additionalProperties === false) { return null; - } else if (JsonSchemaProxyHandler.isObject(additionalProperties)) { + } else if (this.isObject(additionalProperties)) { if (path !== null) { path.push(['additionalProperties', additionalProperties]); } return additionalProperties; } else { - const result = JsonSchemaProxyHandler.unconstrainedSchema; + const result = JsonSchemaValidator.unconstrainedSchema; if (path !== null) { path.push([null, result]); } return result; } @@ -147,13 +157,13 @@ class JsonSchemaProxyHandler { case 'array': { const items = schema.items; - if (JsonSchemaProxyHandler.isObject(items)) { + if (this.isObject(items)) { return items; } if (Array.isArray(items)) { if (property >= 0 && property < items.length) { const propertySchema = items[property]; - if (JsonSchemaProxyHandler.isObject(propertySchema)) { + if (this.isObject(propertySchema)) { if (path !== null) { path.push(['items', items], [property, propertySchema]); } return propertySchema; } @@ -163,11 +173,11 @@ class JsonSchemaProxyHandler { const additionalItems = schema.additionalItems; if (additionalItems === false) { return null; - } else if (JsonSchemaProxyHandler.isObject(additionalItems)) { + } else if (this.isObject(additionalItems)) { if (path !== null) { path.push(['additionalItems', additionalItems]); } return additionalItems; } else { - const result = JsonSchemaProxyHandler.unconstrainedSchema; + const result = JsonSchemaValidator.unconstrainedSchema; if (path !== null) { path.push([null, result]); } return result; } @@ -177,12 +187,12 @@ class JsonSchemaProxyHandler { } } - static getSchemaOrValueType(schema, value) { + getSchemaOrValueType(schema, value) { const type = schema.type; if (Array.isArray(type)) { if (typeof value !== 'undefined') { - const valueType = JsonSchemaProxyHandler.getValueType(value); + const valueType = this.getValueType(value); if (type.indexOf(valueType) >= 0) { return valueType; } @@ -192,7 +202,7 @@ class JsonSchemaProxyHandler { if (typeof type === 'undefined') { if (typeof value !== 'undefined') { - return JsonSchemaProxyHandler.getValueType(value); + return this.getValueType(value); } return null; } @@ -200,37 +210,37 @@ class JsonSchemaProxyHandler { return type; } - static validate(value, schema, info) { - JsonSchemaProxyHandler.validateSingleSchema(value, schema, info); - JsonSchemaProxyHandler.validateConditional(value, schema, info); - JsonSchemaProxyHandler.validateAllOf(value, schema, info); - JsonSchemaProxyHandler.validateAnyOf(value, schema, info); - JsonSchemaProxyHandler.validateOneOf(value, schema, info); - JsonSchemaProxyHandler.validateNoneOf(value, schema, info); + validate(value, schema, info) { + this.validateSingleSchema(value, schema, info); + this.validateConditional(value, schema, info); + this.validateAllOf(value, schema, info); + this.validateAnyOf(value, schema, info); + this.validateOneOf(value, schema, info); + this.validateNoneOf(value, schema, info); } - static validateConditional(value, schema, info) { + validateConditional(value, schema, info) { const ifSchema = schema.if; - if (!JsonSchemaProxyHandler.isObject(ifSchema)) { return; } + if (!this.isObject(ifSchema)) { return; } let okay = true; info.schemaPush('if', ifSchema); try { - JsonSchemaProxyHandler.validate(value, ifSchema, info); + this.validate(value, ifSchema, info); } catch (e) { okay = false; } info.schemaPop(); const nextSchema = okay ? schema.then : schema.else; - if (JsonSchemaProxyHandler.isObject(nextSchema)) { + if (this.isObject(nextSchema)) { info.schemaPush(okay ? 'then' : 'else', nextSchema); - JsonSchemaProxyHandler.validate(value, nextSchema, info); + this.validate(value, nextSchema, info); info.schemaPop(); } } - static validateAllOf(value, schema, info) { + validateAllOf(value, schema, info) { const subSchemas = schema.allOf; if (!Array.isArray(subSchemas)) { return; } @@ -238,13 +248,13 @@ class JsonSchemaProxyHandler { for (let i = 0; i < subSchemas.length; ++i) { const subSchema = subSchemas[i]; info.schemaPush(i, subSchema); - JsonSchemaProxyHandler.validate(value, subSchema, info); + this.validate(value, subSchema, info); info.schemaPop(); } info.schemaPop(); } - static validateAnyOf(value, schema, info) { + validateAnyOf(value, schema, info) { const subSchemas = schema.anyOf; if (!Array.isArray(subSchemas)) { return; } @@ -253,7 +263,7 @@ class JsonSchemaProxyHandler { const subSchema = subSchemas[i]; info.schemaPush(i, subSchema); try { - JsonSchemaProxyHandler.validate(value, subSchema, info); + this.validate(value, subSchema, info); return; } catch (e) { // NOP @@ -265,7 +275,7 @@ class JsonSchemaProxyHandler { // info.schemaPop(); // Unreachable } - static validateOneOf(value, schema, info) { + validateOneOf(value, schema, info) { const subSchemas = schema.oneOf; if (!Array.isArray(subSchemas)) { return; } @@ -275,7 +285,7 @@ class JsonSchemaProxyHandler { const subSchema = subSchemas[i]; info.schemaPush(i, subSchema); try { - JsonSchemaProxyHandler.validate(value, subSchema, info); + this.validate(value, subSchema, info); ++count; } catch (e) { // NOP @@ -290,7 +300,7 @@ class JsonSchemaProxyHandler { info.schemaPop(); } - static validateNoneOf(value, schema, info) { + validateNoneOf(value, schema, info) { const subSchemas = schema.not; if (!Array.isArray(subSchemas)) { return; } @@ -299,7 +309,7 @@ class JsonSchemaProxyHandler { const subSchema = subSchemas[i]; info.schemaPush(i, subSchema); try { - JsonSchemaProxyHandler.validate(value, subSchema, info); + this.validate(value, subSchema, info); } catch (e) { info.schemaPop(); continue; @@ -309,35 +319,35 @@ class JsonSchemaProxyHandler { info.schemaPop(); } - static validateSingleSchema(value, schema, info) { - const type = JsonSchemaProxyHandler.getValueType(value); + validateSingleSchema(value, schema, info) { + const type = this.getValueType(value); const schemaType = schema.type; - if (!JsonSchemaProxyHandler.isValueTypeAny(value, type, schemaType)) { + if (!this.isValueTypeAny(value, type, schemaType)) { throw new JsonSchemaValidationError(`Value type ${type} does not match schema type ${schemaType}`, value, schema, info); } const schemaEnum = schema.enum; - if (Array.isArray(schemaEnum) && !JsonSchemaProxyHandler.valuesAreEqualAny(value, schemaEnum)) { + if (Array.isArray(schemaEnum) && !this.valuesAreEqualAny(value, schemaEnum)) { throw new JsonSchemaValidationError('Invalid enum value', value, schema, info); } switch (type) { case 'number': - JsonSchemaProxyHandler.validateNumber(value, schema, info); + this.validateNumber(value, schema, info); break; case 'string': - JsonSchemaProxyHandler.validateString(value, schema, info); + this.validateString(value, schema, info); break; case 'array': - JsonSchemaProxyHandler.validateArray(value, schema, info); + this.validateArray(value, schema, info); break; case 'object': - JsonSchemaProxyHandler.validateObject(value, schema, info); + this.validateObject(value, schema, info); break; } } - static validateNumber(value, schema, info) { + validateNumber(value, schema, info) { const multipleOf = schema.multipleOf; if (typeof multipleOf === 'number' && Math.floor(value / multipleOf) * multipleOf !== value) { throw new JsonSchemaValidationError(`Number is not a multiple of ${multipleOf}`, value, schema, info); @@ -364,7 +374,7 @@ class JsonSchemaProxyHandler { } } - static validateString(value, schema, info) { + validateString(value, schema, info) { const minLength = schema.minLength; if (typeof minLength === 'number' && value.length < minLength) { throw new JsonSchemaValidationError('String length too short', value, schema, info); @@ -374,9 +384,26 @@ class JsonSchemaProxyHandler { if (typeof maxLength === 'number' && value.length > maxLength) { throw new JsonSchemaValidationError('String length too long', value, schema, info); } + + const pattern = schema.pattern; + if (typeof pattern === 'string') { + let patternFlags = schema.patternFlags; + if (typeof patternFlags !== 'string') { patternFlags = ''; } + + let regex; + try { + regex = this._getRegex(pattern, patternFlags); + } catch (e) { + throw new JsonSchemaValidationError(`Pattern is invalid (${e.message})`, value, schema, info); + } + + if (!regex.test(value)) { + throw new JsonSchemaValidationError('Pattern match failed', value, schema, info); + } + } } - static validateArray(value, schema, info) { + validateArray(value, schema, info) { const minItems = schema.minItems; if (typeof minItems === 'number' && value.length < minItems) { throw new JsonSchemaValidationError('Array length too short', value, schema, info); @@ -389,7 +416,7 @@ class JsonSchemaProxyHandler { for (let i = 0, ii = value.length; i < ii; ++i) { const schemaPath = []; - const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, i, value, schemaPath); + const propertySchema = this.getPropertySchema(schema, i, value, schemaPath); if (propertySchema === null) { throw new JsonSchemaValidationError(`No schema found for array[${i}]`, value, schema, info); } @@ -398,13 +425,13 @@ class JsonSchemaProxyHandler { for (const [p, s] of schemaPath) { info.schemaPush(p, s); } info.valuePush(i, propertyValue); - JsonSchemaProxyHandler.validate(propertyValue, propertySchema, info); + this.validate(propertyValue, propertySchema, info); info.valuePop(); for (let j = 0, jj = schemaPath.length; j < jj; ++j) { info.schemaPop(); } } } - static validateObject(value, schema, info) { + validateObject(value, schema, info) { const properties = new Set(Object.getOwnPropertyNames(value)); const required = schema.required; @@ -428,7 +455,7 @@ class JsonSchemaProxyHandler { for (const property of properties) { const schemaPath = []; - const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, property, value, schemaPath); + const propertySchema = this.getPropertySchema(schema, property, value, schemaPath); if (propertySchema === null) { throw new JsonSchemaValidationError(`No schema found for ${property}`, value, schema, info); } @@ -437,18 +464,18 @@ class JsonSchemaProxyHandler { for (const [p, s] of schemaPath) { info.schemaPush(p, s); } info.valuePush(property, propertyValue); - JsonSchemaProxyHandler.validate(propertyValue, propertySchema, info); + this.validate(propertyValue, propertySchema, info); info.valuePop(); for (let i = 0; i < schemaPath.length; ++i) { info.schemaPop(); } } } - static isValueTypeAny(value, type, schemaTypes) { + isValueTypeAny(value, type, schemaTypes) { if (typeof schemaTypes === 'string') { - return JsonSchemaProxyHandler.isValueType(value, type, schemaTypes); + return this.isValueType(value, type, schemaTypes); } else if (Array.isArray(schemaTypes)) { for (const schemaType of schemaTypes) { - if (JsonSchemaProxyHandler.isValueType(value, type, schemaType)) { + if (this.isValueType(value, type, schemaType)) { return true; } } @@ -457,14 +484,14 @@ class JsonSchemaProxyHandler { return true; } - static isValueType(value, type, schemaType) { + isValueType(value, type, schemaType) { return ( type === schemaType || (schemaType === 'integer' && Math.floor(value) === value) ); } - static getValueType(value) { + getValueType(value) { const type = typeof value; if (type === 'object') { if (value === null) { return 'null'; } @@ -473,20 +500,20 @@ class JsonSchemaProxyHandler { return type; } - static valuesAreEqualAny(value1, valueList) { + valuesAreEqualAny(value1, valueList) { for (const value2 of valueList) { - if (JsonSchemaProxyHandler.valuesAreEqual(value1, value2)) { + if (this.valuesAreEqual(value1, value2)) { return true; } } return false; } - static valuesAreEqual(value1, value2) { + valuesAreEqual(value1, value2) { return value1 === value2; } - static getDefaultTypeValue(type) { + getDefaultTypeValue(type) { if (typeof type === 'string') { switch (type) { case 'null': @@ -507,38 +534,38 @@ class JsonSchemaProxyHandler { return null; } - static getValidValueOrDefault(schema, value) { - let type = JsonSchemaProxyHandler.getValueType(value); + getValidValueOrDefault(schema, value) { + let type = this.getValueType(value); const schemaType = schema.type; - if (!JsonSchemaProxyHandler.isValueTypeAny(value, type, schemaType)) { + if (!this.isValueTypeAny(value, type, schemaType)) { let assignDefault = true; const schemaDefault = schema.default; if (typeof schemaDefault !== 'undefined') { value = JsonSchema.clone(schemaDefault); - type = JsonSchemaProxyHandler.getValueType(value); - assignDefault = !JsonSchemaProxyHandler.isValueTypeAny(value, type, schemaType); + type = this.getValueType(value); + assignDefault = !this.isValueTypeAny(value, type, schemaType); } if (assignDefault) { - value = JsonSchemaProxyHandler.getDefaultTypeValue(schemaType); - type = JsonSchemaProxyHandler.getValueType(value); + value = this.getDefaultTypeValue(schemaType); + type = this.getValueType(value); } } switch (type) { case 'object': - value = JsonSchemaProxyHandler.populateObjectDefaults(value, schema); + value = this.populateObjectDefaults(value, schema); break; case 'array': - value = JsonSchemaProxyHandler.populateArrayDefaults(value, schema); + value = this.populateArrayDefaults(value, schema); break; } return value; } - static populateObjectDefaults(value, schema) { + populateObjectDefaults(value, schema) { const properties = new Set(Object.getOwnPropertyNames(value)); const required = schema.required; @@ -546,40 +573,46 @@ class JsonSchemaProxyHandler { for (const property of required) { properties.delete(property); - const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, property, value); + const propertySchema = this.getPropertySchema(schema, property, value); if (propertySchema === null) { continue; } - value[property] = JsonSchemaProxyHandler.getValidValueOrDefault(propertySchema, value[property]); + value[property] = this.getValidValueOrDefault(propertySchema, value[property]); } } for (const property of properties) { - const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, property, value); + const propertySchema = this.getPropertySchema(schema, property, value); if (propertySchema === null) { Reflect.deleteProperty(value, property); } else { - value[property] = JsonSchemaProxyHandler.getValidValueOrDefault(propertySchema, value[property]); + value[property] = this.getValidValueOrDefault(propertySchema, value[property]); } } return value; } - static populateArrayDefaults(value, schema) { + populateArrayDefaults(value, schema) { for (let i = 0, ii = value.length; i < ii; ++i) { - const propertySchema = JsonSchemaProxyHandler.getPropertySchema(schema, i, value); + const propertySchema = this.getPropertySchema(schema, i, value); if (propertySchema === null) { continue; } - value[i] = JsonSchemaProxyHandler.getValidValueOrDefault(propertySchema, value[i]); + value[i] = this.getValidValueOrDefault(propertySchema, value[i]); } return value; } - static isObject(value) { + isObject(value) { return typeof value === 'object' && value !== null && !Array.isArray(value); } + + _getRegex(pattern, flags) { + const regex = this._regexCache.get(pattern, flags); + regex.lastIndex = 0; + return regex; + } } -Object.defineProperty(JsonSchemaProxyHandler, 'unconstrainedSchema', { +Object.defineProperty(JsonSchemaValidator, 'unconstrainedSchema', { value: Object.freeze({}), configurable: false, enumerable: true, @@ -622,15 +655,16 @@ class JsonSchemaValidationError extends Error { class JsonSchema { static createProxy(target, schema) { - return new Proxy(target, new JsonSchemaProxyHandler(schema)); + const validator = new JsonSchemaValidator(); + return new Proxy(target, new JsonSchemaProxyHandler(schema, validator)); } static validate(value, schema) { - return JsonSchemaProxyHandler.validate(value, schema, new JsonSchemaTraversalInfo(value, schema)); + return new JsonSchemaValidator().validate(value, schema, new JsonSchemaTraversalInfo(value, schema)); } static getValidValueOrDefault(schema, value) { - return JsonSchemaProxyHandler.getValidValueOrDefault(schema, value); + return new JsonSchemaValidator().getValidValueOrDefault(schema, value); } static clone(value) { |