82 lines
3.3 KiB
Swift
82 lines
3.3 KiB
Swift
//
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// Copyright (c) 2022 Touch Instinct
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the Software), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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open class DefaultEndpointSecurityPreprocessor: EndpointRequestPreprocessor {
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enum PreprocessError: Error {
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case missingSecurityScheme(String, [String: SecurityScheme])
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case unableToSatisfyRequirements(anyOfRequired: [[String]],
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registeredPreprocessors: [String: SecuritySchemePreprocessor])
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}
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private let openApi: OpenAPI
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private var schemePreprocessors: [String: SecuritySchemePreprocessor]
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public init(openApi: OpenAPI, schemePreprocessors: [String: SecuritySchemePreprocessor] = [:]) {
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self.openApi = openApi
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self.schemePreprocessors = schemePreprocessors
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}
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public func preprocess<B, S>(request: EndpointRequest<B, S>) throws -> EndpointRequest<B, S> {
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guard !request.security.compactMap({ $0 }).isEmpty else {
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return request
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}
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let endpointSchemes: [[KeyValueTuple<String, SecurityScheme>]] = try request.security.map {
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try $0.map {
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guard let securityScheme = openApi.security[$0] else {
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throw PreprocessError.missingSecurityScheme($0, openApi.security)
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}
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return ($0, securityScheme)
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}
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}
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for schemeGroup in endpointSchemes {
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let preprocessorsGroup: [KeyValueTuple<SecurityScheme, SecuritySchemePreprocessor>] = schemeGroup.compactMap {
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guard let preprocessor = schemePreprocessors[$0.key] else {
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return nil
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}
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return ($0.value, preprocessor)
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}
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guard preprocessorsGroup.count == schemeGroup.count else {
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continue // unable to satisfy group requirement
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}
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do {
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return try preprocessorsGroup.reduce(request) {
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try $1.value.preprocess(request: $0, using: $1.key)
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}
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}
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}
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throw PreprocessError.unableToSatisfyRequirements(anyOfRequired: request.security,
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registeredPreprocessors: schemePreprocessors)
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}
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public func register(preprocessor: SecuritySchemePreprocessor, for scheme: String) {
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schemePreprocessors[scheme] = preprocessor
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}
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}
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