/// <summary>Processes the HTTP request method.</summary>
/// <param name="context">The context.</param>
/// <param name="routes">The routes.</param>
/// <param name="resolver">The resolver.</param>
/// <param name="defaultRequestConfiguration">The default request configuration.</param>
/// <returns></returns>
internal static async Task <bool> ProcessHttpRequestMethod(this ApiRequestContext context,
IApiRoutingTable routes,
IUriRouteResolver resolver,
IDeepSleepRequestConfiguration defaultRequestConfiguration)
{
if (!context.RequestAborted.IsCancellationRequested)
{
// Templates exist for thies route
if ((context.Routing?.Template?.Locations?.Count ?? 0) > 0)
{
// A route was not found for the template
if (context.Routing.Route == null)
{
var methods = context.Routing.Template.Locations
.Where(e => !string.IsNullOrWhiteSpace(e?.HttpMethod))
.Select(e => e.HttpMethod.ToUpper())
.Distinct()
.ToList();
if (methods.Contains("GET") && !methods.Contains("HEAD"))
{
if (resolver != null)
{
var match = await resolver.MatchRoute(
routes,
"GET",
context.Request.Path).ConfigureAwait(false);
if (match != null)
{
var enableHeadForGetRequests = match.Configuration?.EnableHeadForGetRequests
?? defaultRequestConfiguration?.EnableHeadForGetRequests
?? ApiRequestContext.GetDefaultRequestConfiguration().EnableHeadForGetRequests
?? true;
if (enableHeadForGetRequests)
{
methods.Add("HEAD");
}
}
}
}
context.Runtime.Internals.IsMethodNotFound = true;
context.Response.AddHeader("Allow", string.Join(", ", methods));
context.Response.StatusCode = 405;
return(false);
}
}
return(true);
}
return(false);
}
/// <summary>Uses the deep sleep services.</summary>
/// <param name="services">The services.</param>
/// <param name="configure">The configure.</param>
/// <returns></returns>
public static IServiceCollection UseDeepSleepServices(this IServiceCollection services, Action <IDeepSleepServiceConfiguration> configure = null)
{
var configuration = new DeepSleepServiceConfiguration
{
DefaultRequestConfiguration = ApiRequestContext.GetDefaultRequestConfiguration(),
ExcludePaths = new List <string>(),
IncludePaths = new List <string> {
ApiPaths.All()
},
WriteConsoleHeader = true,
DiscoveryStrategies = new List <IDeepSleepDiscoveryStrategy>()
};
if (configure != null)
{
configure(configuration);
}
configuration.DefaultRequestConfiguration = configuration.DefaultRequestConfiguration ?? ApiRequestContext.GetDefaultRequestConfiguration();
configuration.ExcludePaths = configuration.ExcludePaths ?? new List <string>();
configuration.IncludePaths = configuration.IncludePaths ?? new List <string>();
var routingTable = new ApiRoutingTable(routePrefix: configuration.RoutePrefix);
services
.AddScoped <IApiRequestContextResolver, ApiRequestContextResolver>()
.AddScoped <IFormUrlEncodedObjectSerializer, FormUrlEncodedObjectSerializer>()
.AddScoped <IUriRouteResolver, ApiRouteResolver>()
.AddScoped <IMultipartStreamReader, MultipartStreamReader>()
.AddScoped <IDeepSleepMediaSerializerFactory, DeepSleepMediaSerializerWriterFactory>()
.AddScoped <IApiValidationProvider, ApiEndpointValidationProvider>()
.AddSingleton <IApiRequestPipeline, IApiRequestPipeline>((p) => ApiRequestPipeline.GetDefaultRequestPipeline())
.AddSingleton <IDeepSleepRequestConfiguration, IDeepSleepRequestConfiguration>((p) => configuration.DefaultRequestConfiguration)
.AddSingleton <IDeepSleepServiceConfiguration, IDeepSleepServiceConfiguration>((p) => configuration)
.AddSingleton <IApiRoutingTable, IApiRoutingTable>((p) => routingTable);
return(services);
}
/// <summary>Processes the HTTP response caching.</summary>
/// <param name="context">The context.</param>
/// <param name="defaultRequestConfiguration">The default request configuration.</param>
/// <returns></returns>
internal static Task <bool> ProcessHttpResponseCaching(this ApiRequestContext context, IDeepSleepRequestConfiguration defaultRequestConfiguration)
{
if (!context.RequestAborted.IsCancellationRequested)
{
var statusCode = context.Response.StatusCode;
var systemConfiguration = ApiRequestContext.GetDefaultRequestConfiguration();
var expirationSeconds = context.Configuration?.CacheDirective?.ExpirationSeconds
?? defaultRequestConfiguration?.CacheDirective?.ExpirationSeconds
?? systemConfiguration.CacheDirective.ExpirationSeconds.Value;
var cacheability = context.Configuration?.CacheDirective?.Cacheability
?? defaultRequestConfiguration?.CacheDirective?.Cacheability
?? systemConfiguration.CacheDirective.Cacheability.Value;
var cacheLocation = context.Configuration?.CacheDirective?.CacheLocation
?? defaultRequestConfiguration?.CacheDirective?.CacheLocation
?? systemConfiguration.CacheDirective.CacheLocation.Value;
var vary = context.Configuration?.CacheDirective?.VaryHeaderValue
?? defaultRequestConfiguration?.CacheDirective?.VaryHeaderValue
?? systemConfiguration.CacheDirective.VaryHeaderValue;
if (statusCode >= 200 && statusCode <= 299 && statusCode != 204)
{
// Don't add cache headers for pre-flight requests
// This is handled in the prflight pipeline component
if (context.Request.IsCorsPreflightRequest())
{
return(Task.FromResult(true));
}
if (cacheability == HttpCacheType.Cacheable)
{
var maxAgeSeconds = expirationSeconds < 0
? 0
: expirationSeconds;
context.Response.AddHeader("Cache-Control", $"{cacheLocation.ToString().ToLower()}, max-age={maxAgeSeconds}");
context.Response.AddHeader("Expires", DateTime.UtcNow.AddSeconds(expirationSeconds).ToString("r"));
if (!string.IsNullOrWhiteSpace(vary))
{
// ADDING VARY HEADERS TO SPECIFY WHAT THE RESPONSE REPRESENTATION WAS GENERATED AGAINST.
context.Response.AddHeader(
name: "Vary",
value: vary,
append: true);
}
return(Task.FromResult(true));
}
}
var seconds = expirationSeconds > 0
? -1
: expirationSeconds;
context.Response.AddHeader("Cache-Control", $"no-store, max-age=0");
// this gets updated when the response date is added to the headers. THe value will
// ultimately be the response date - expiration seconds. Needs to be here though because the header is checked
// for prior to updating it.
context.Response.AddHeader("Expires", DateTime.UtcNow.AddSeconds(seconds).ToString("r"));
}
return(Task.FromResult(true));
}
/// <summary>Writes the deepsleep to console.</summary>
/// <param name="routingTable">The routing table.</param>
/// <param name="defaultConfiguration">The default configuration.</param>
internal static void WriteDeepSleepToConsole(IApiRoutingTable routingTable, IDeepSleepRequestConfiguration defaultConfiguration)
{
var systemConfiguration = ApiRequestContext.GetDefaultRequestConfiguration();
var existingColor = Console.ForegroundColor;
var deepSleepAssemblyInfo = GetAssemplyInfo(typeof(ApiRequestContext));
var deepSleepWebAssemblyInfo = GetAssemplyInfo(typeof(ApiCoreHttpExtensionMethods));
var deepSleepOpenApiAssemblyInfo = GetAssemplyInfo(Type.GetType("DeepSleep.OpenApi.DeepSleepOasGenerator, deepsleep.openapi", false, false));
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine($@"");
Console.WriteLine($@" ____ _ ");
Console.WriteLine($@"| \ ___ ___ ___ ___| |___ ___ ___ ");
Console.WriteLine($@"| | | -_| -_| . |_ -| | -_| -_| . |");
Console.WriteLine($@"|____/|___|___| _|___|_|___|___| _|");
Console.Write($@" |_| |_| ");
Console.ForegroundColor = existingColor;
Console.WriteLine($" v{deepSleepAssemblyInfo.version}");
Console.WriteLine($"");
if (!string.IsNullOrWhiteSpace(deepSleepWebAssemblyInfo.framework))
{
Console.WriteLine($"");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine($"Target(s): ");
Console.ForegroundColor = existingColor;
Console.WriteLine($"------------------------------------------------");
Console.ForegroundColor = existingColor;
Console.WriteLine($" {deepSleepAssemblyInfo.name}, {deepSleepAssemblyInfo.version}, {deepSleepAssemblyInfo.framework}");
if (!string.IsNullOrWhiteSpace(deepSleepOpenApiAssemblyInfo.name))
{
Console.WriteLine($" {deepSleepOpenApiAssemblyInfo.name}, {deepSleepOpenApiAssemblyInfo.version}, {deepSleepOpenApiAssemblyInfo.framework}");
}
Console.WriteLine($" {deepSleepWebAssemblyInfo.name}, {deepSleepWebAssemblyInfo.version}, {deepSleepWebAssemblyInfo.framework}");
Console.WriteLine($"");
}
Console.ForegroundColor = ConsoleColor.Yellow;
Console.Write($"Endpoints: ");
Console.ForegroundColor = existingColor;
Console.WriteLine($"{routingTable?.GetRoutes()?.Count ?? 0}");
Console.WriteLine($"------------------------------------------------");
Console.WriteLine($"");
var routes = (routingTable?.GetRoutes() ?? new List <ApiRoutingItem>())
.OrderBy(r => r.Template)
.ToList();
Action <string, string, bool> writeRoute = (string method, string template, bool isAutoHead) =>
{
existingColor = Console.ForegroundColor;
Console.ForegroundColor = isAutoHead ? ConsoleColor.Gray : ConsoleColor.Yellow;
Console.Write($" {method.ToUpper(),-9}");
Console.ForegroundColor = existingColor;
WriteEndpointTemplate(template, isAutoHead);
};
routes.ForEach(r =>
{
writeRoute(r.HttpMethod, r.Template, false);
if (string.Compare(r.HttpMethod, "GET", true) == 0)
{
var enableGet = r.Configuration?.EnableHeadForGetRequests
?? defaultConfiguration?.EnableHeadForGetRequests
?? systemConfiguration?.EnableHeadForGetRequests
?? true;
if (enableGet)
{
var matchingHead = routes
.Where(m => m.HttpMethod.ToLowerInvariant() == "head")
.Where(m => m.Template.ToLowerInvariant() == r.Template.ToLowerInvariant())
.FirstOrDefault();
if (matchingHead == null)
{
writeRoute("HEAD", r.Template, true);
}
}
}
});
Console.WriteLine("");
var now = DateTime.Now;
if (now.Month == 5 && now.Day == 4)
{
MayTheFourth();
}
Console.WriteLine();
}
/// <summary>Processes the API request.</summary>
/// <param name="context">The context.</param>
/// <param name="httpcontext">The httpcontext.</param>
/// <param name="contextResolver">The context resolver.</param>
/// <param name="requestPipeline">The request pipeline.</param>
/// <param name="defaultRequestConfiguration">The default request configuration.</param>
/// <returns></returns>
internal static async Task <bool> ProcessApiRequest(
this ApiRequestContext context,
HttpContext httpcontext,
IApiRequestContextResolver contextResolver,
IApiRequestPipeline requestPipeline,
IDeepSleepRequestConfiguration defaultRequestConfiguration)
{
if (!context.RequestAborted.IsCancellationRequested)
{
await requestPipeline.Run(contextResolver);
context.SetThreadCulure();
var responseDate = DateTimeOffset.UtcNow;
context.Response.Date = responseDate;
context.Response.AddHeader(
name: "Date",
value: responseDate.ToString("r"),
append: false,
allowMultiple: false);
httpcontext.Response.Headers.Add("Date", responseDate.ToString("r"));
// Sync up the expire header for nocache requests with the date header being used
var contextExpiresHeader = context.Response.Headers.FirstOrDefault(h => h.Name == "Expires");
var expirationSeconds = context.Configuration?.CacheDirective?.ExpirationSeconds
?? defaultRequestConfiguration?.CacheDirective?.ExpirationSeconds
?? ApiRequestContext.GetDefaultRequestConfiguration().CacheDirective.ExpirationSeconds.Value;
var cacheability = context.Configuration?.CacheDirective?.Cacheability
?? defaultRequestConfiguration?.CacheDirective?.Cacheability
?? ApiRequestContext.GetDefaultRequestConfiguration().CacheDirective.Cacheability.Value;
if (contextExpiresHeader != null)
{
if (cacheability == HttpCacheType.NoCache && expirationSeconds > 0)
{
contextExpiresHeader.Value = responseDate.AddSeconds(-1).ToString("r");
}
else
{
contextExpiresHeader.Value = responseDate.AddSeconds(expirationSeconds).ToString("r");
}
}
// Merge status code to the http response
httpcontext.Response.StatusCode = context.Response.StatusCode;
if (context.Response.ResponseWriter != null && context.Response.ResponseWriterOptions != null)
{
context.Response.AddHeader(
name: "Content-Type",
value: context.Response.ContentType.ToString(),
append: false,
allowMultiple: false);
if (!string.IsNullOrWhiteSpace(context.Response.ContentLanguage))
{
context.Response.AddHeader(
name: "Content-Language",
value: context.Response.ContentLanguage,
append: false,
allowMultiple: false);
}
if (!context.Request.IsHeadRequest())
{
var contentLength = await context.Response.ResponseWriter.WriteType(
stream : httpcontext.Response.Body,
obj : context.Response.ResponseObject,
context.Response.ResponseWriterOptions,
(l) =>
{
context.Response.ContentLength = l;
context.Response.AddHeader(
name: "Content-Length",
value: l.ToString(CultureInfo.InvariantCulture),
append: false,
allowMultiple: false);
AddHeadersToResponse(httpcontext, context);
}).ConfigureAwait(false);
context.Response.ContentLength = contentLength;
}
else
{
using (var ms = new MemoryStream())
{
await context.Response.ResponseWriter.WriteType(
ms,
context.Response.ResponseObject,
context.Response.ResponseWriterOptions).ConfigureAwait(false);
context.Response.ResponseObject = null;
context.Response.ContentLength = ms.Length;
context.Response.AddHeader(
name: "Content-Length",
value: ms.Length.ToString(CultureInfo.InvariantCulture),
append: false,
allowMultiple: false);
AddHeadersToResponse(httpcontext, context);
}
}
}
else
{
context.Response.ContentLength = 0;
context.Response.AddHeader("Content-Length", "0");
AddHeadersToResponse(httpcontext, context);
}
context.Runtime.Duration.UtcEnd = DateTime.UtcNow;
}
return(true);
}
/// <summary>Merges the configurations.</summary>
/// <param name="serviceProvider">The service provider.</param>
/// <param name="defaultConfig">The default configuration.</param>
/// <param name="endpointConfig">The endpoint configuration.</param>
/// <returns></returns>
public static IDeepSleepRequestConfiguration MergeConfigurations(
IServiceProvider serviceProvider,
IDeepSleepRequestConfiguration defaultConfig,
IDeepSleepRequestConfiguration endpointConfig)
{
IDeepSleepRequestConfiguration systemConfig = ApiRequestContext.GetDefaultRequestConfiguration();
IDeepSleepRequestConfiguration requestConfig = (endpointConfig != null)
? GetNewConfiguration(serviceProvider, endpointConfig)
: GetNewConfiguration(serviceProvider, defaultConfig);
if (requestConfig == null)
{
return(systemConfig);
}
requestConfig.ApiErrorResponseProvider = endpointConfig?.ApiErrorResponseProvider
?? defaultConfig?.ApiErrorResponseProvider
?? systemConfig.ApiErrorResponseProvider;
requestConfig.AllowAnonymous = endpointConfig?.AllowAnonymous
?? defaultConfig?.AllowAnonymous
?? systemConfig.AllowAnonymous;
requestConfig.EnableHeadForGetRequests = endpointConfig?.EnableHeadForGetRequests
?? defaultConfig?.EnableHeadForGetRequests
?? systemConfig.EnableHeadForGetRequests;
// ----------------------------
// Authorization Components
// ----------------------------
if (endpointConfig?.AuthorizationProviders != null || defaultConfig?.AuthorizationProviders != null)
{
if (endpointConfig?.AuthorizationProviders != null)
{
requestConfig.AuthorizationProviders = new List <IAuthorizationComponent>(endpointConfig.AuthorizationProviders);
}
else if (defaultConfig?.AuthorizationProviders != null)
{
requestConfig.AuthorizationProviders = new List <IAuthorizationComponent>(defaultConfig.AuthorizationProviders);
}
else
{
requestConfig.AuthorizationProviders = systemConfig.AuthorizationProviders;
}
}
else
{
requestConfig.AuthorizationProviders = systemConfig.AuthorizationProviders;
}
// ----------------------------
// Authentication Components
// ----------------------------
if (endpointConfig?.AuthenticationProviders != null || defaultConfig?.AuthenticationProviders != null)
{
if (endpointConfig?.AuthenticationProviders != null)
{
requestConfig.AuthenticationProviders = new List <IAuthenticationComponent>(endpointConfig.AuthenticationProviders);
}
else if (defaultConfig?.AuthenticationProviders != null)
{
requestConfig.AuthenticationProviders = new List <IAuthenticationComponent>(defaultConfig.AuthenticationProviders);
}
else
{
requestConfig.AuthenticationProviders = systemConfig.AuthenticationProviders;
}
}
else
{
requestConfig.AuthenticationProviders = systemConfig.AuthenticationProviders;
}
// ----------------------------
// Validator Components
// ----------------------------
if (endpointConfig?.Validators != null || defaultConfig?.Validators != null)
{
if (endpointConfig?.Validators != null)
{
requestConfig.Validators = new List <IEndpointValidatorComponent>(endpointConfig.Validators);
}
else if (defaultConfig?.Validators != null)
{
requestConfig.Validators = new List <IEndpointValidatorComponent>(defaultConfig.Validators);
}
else
{
requestConfig.Validators = systemConfig.Validators;
}
}
else
{
requestConfig.Validators = systemConfig.Validators;
}
// ----------------------------
// Pipeline Components
// ----------------------------
if (endpointConfig?.PipelineComponents != null || defaultConfig?.PipelineComponents != null)
{
if (endpointConfig?.PipelineComponents != null)
{
requestConfig.PipelineComponents = new List <IRequestPipelineComponent>(endpointConfig.PipelineComponents);
}
else if (defaultConfig?.PipelineComponents != null)
{
requestConfig.PipelineComponents = new List <IRequestPipelineComponent>(defaultConfig.PipelineComponents);
}
else
{
requestConfig.PipelineComponents = systemConfig.PipelineComponents;
}
}
else
{
requestConfig.PipelineComponents = systemConfig.PipelineComponents;
}
// ----------------------------
// Language Support Validation
// ----------------------------
if (endpointConfig?.LanguageSupport != null || defaultConfig?.LanguageSupport != null)
{
requestConfig.LanguageSupport = new ApiLanguageSupportConfiguration
{
FallBackLanguage = endpointConfig?.LanguageSupport?.FallBackLanguage
?? defaultConfig?.LanguageSupport?.FallBackLanguage
?? systemConfig.LanguageSupport?.FallBackLanguage,
SupportedLanguages = new List <string>(endpointConfig?.LanguageSupport?.SupportedLanguages
?? defaultConfig?.LanguageSupport?.SupportedLanguages
?? systemConfig.LanguageSupport?.SupportedLanguages),
UseAcceptedLanguageAsThreadCulture = endpointConfig?.LanguageSupport?.UseAcceptedLanguageAsThreadCulture
?? defaultConfig?.LanguageSupport?.UseAcceptedLanguageAsThreadCulture
?? systemConfig.LanguageSupport?.UseAcceptedLanguageAsThreadCulture,
UseAcceptedLanguageAsThreadUICulture = endpointConfig?.LanguageSupport?.UseAcceptedLanguageAsThreadUICulture
?? defaultConfig?.LanguageSupport?.UseAcceptedLanguageAsThreadUICulture
?? systemConfig.LanguageSupport?.UseAcceptedLanguageAsThreadUICulture
};
var endpointSupportedLanguages = endpointConfig?.LanguageSupport?.SupportedLanguages != null
? new List <string>(endpointConfig.LanguageSupport.SupportedLanguages)
: null;
var defaultSupportedLanguages = defaultConfig?.LanguageSupport?.SupportedLanguages != null
? new List <string>(defaultConfig.LanguageSupport.SupportedLanguages)
: null;
requestConfig.LanguageSupport.SupportedLanguages = endpointSupportedLanguages ?? defaultSupportedLanguages ?? systemConfig.LanguageSupport?.SupportedLanguages;
}
else
{
requestConfig.LanguageSupport = systemConfig.LanguageSupport;
}
// ----------------------------
// Merge Request Validation
// ----------------------------
if (endpointConfig?.RequestValidation != null || defaultConfig?.RequestValidation != null)
{
requestConfig.RequestValidation = new ApiRequestValidationConfiguration
{
MaxHeaderLength = endpointConfig?.RequestValidation?.MaxHeaderLength
?? defaultConfig?.RequestValidation?.MaxHeaderLength
?? systemConfig.RequestValidation?.MaxHeaderLength,
MaxRequestUriLength = endpointConfig?.RequestValidation?.MaxRequestUriLength
?? defaultConfig?.RequestValidation?.MaxRequestUriLength
?? systemConfig.RequestValidation?.MaxRequestUriLength,
MaxRequestLength = endpointConfig?.RequestValidation?.MaxRequestLength
?? defaultConfig?.RequestValidation?.MaxRequestLength
?? systemConfig.RequestValidation?.MaxRequestLength,
AllowRequestBodyWhenNoModelDefined = endpointConfig?.RequestValidation?.AllowRequestBodyWhenNoModelDefined
?? defaultConfig?.RequestValidation?.AllowRequestBodyWhenNoModelDefined
?? systemConfig.RequestValidation?.AllowRequestBodyWhenNoModelDefined,
RequireContentLengthOnRequestBodyRequests = endpointConfig?.RequestValidation?.RequireContentLengthOnRequestBodyRequests
?? defaultConfig?.RequestValidation?.RequireContentLengthOnRequestBodyRequests
?? systemConfig.RequestValidation?.RequireContentLengthOnRequestBodyRequests
};
}
else
{
requestConfig.RequestValidation = systemConfig.RequestValidation;
}
// ----------------------------
// Merge Cache Directive
// ----------------------------
if (endpointConfig?.CacheDirective != null || defaultConfig?.CacheDirective != null)
{
requestConfig.CacheDirective = new ApiCacheDirectiveConfiguration
{
Cacheability = endpointConfig?.CacheDirective?.Cacheability
?? defaultConfig?.CacheDirective?.Cacheability
?? systemConfig.CacheDirective?.Cacheability,
CacheLocation = endpointConfig?.CacheDirective?.CacheLocation
?? defaultConfig?.CacheDirective?.CacheLocation
?? systemConfig.CacheDirective?.CacheLocation,
ExpirationSeconds = endpointConfig?.CacheDirective?.ExpirationSeconds
?? defaultConfig?.CacheDirective?.ExpirationSeconds
?? systemConfig.CacheDirective?.ExpirationSeconds,
VaryHeaderValue = endpointConfig?.CacheDirective?.VaryHeaderValue
?? defaultConfig?.CacheDirective?.VaryHeaderValue
?? systemConfig.CacheDirective?.VaryHeaderValue
};
}
else
{
requestConfig.CacheDirective = systemConfig.CacheDirective;
}
// ----------------------------
// Merge Cross Origin Configuration
// ----------------------------
if (endpointConfig?.CrossOriginConfig != null || defaultConfig?.CrossOriginConfig != null)
{
requestConfig.CrossOriginConfig = new ApiCrossOriginConfiguration
{
AllowCredentials = endpointConfig?.CrossOriginConfig?.AllowCredentials
?? defaultConfig?.CrossOriginConfig?.AllowCredentials
?? systemConfig?.CrossOriginConfig?.AllowCredentials,
MaxAgeSeconds = endpointConfig?.CrossOriginConfig?.MaxAgeSeconds
?? defaultConfig?.CrossOriginConfig?.MaxAgeSeconds
?? systemConfig?.CrossOriginConfig?.MaxAgeSeconds
};
var endpointAllowedOrigins = endpointConfig?.CrossOriginConfig?.AllowedOrigins != null
? new List <string>(endpointConfig.CrossOriginConfig.AllowedOrigins)
: null;
var defaultAllowedOrigins = defaultConfig?.CrossOriginConfig?.AllowedOrigins != null
? new List <string>(defaultConfig.CrossOriginConfig.AllowedOrigins)
: null;
requestConfig.CrossOriginConfig.AllowedOrigins = endpointAllowedOrigins ?? defaultAllowedOrigins ?? systemConfig.CrossOriginConfig?.AllowedOrigins;
var endpointExposeHeaders = endpointConfig?.CrossOriginConfig?.ExposeHeaders != null
? new List <string>(endpointConfig.CrossOriginConfig.ExposeHeaders)
: null;
var defaultExposeHeaders = defaultConfig?.CrossOriginConfig?.ExposeHeaders != null
? new List <string>(defaultConfig.CrossOriginConfig.ExposeHeaders)
: null;
requestConfig.CrossOriginConfig.ExposeHeaders = endpointExposeHeaders ?? defaultExposeHeaders ?? systemConfig.CrossOriginConfig?.ExposeHeaders;
var endpointAllowedHeaders = endpointConfig?.CrossOriginConfig?.AllowedHeaders != null
? new List <string>(endpointConfig.CrossOriginConfig.AllowedHeaders)
: null;
var defaultAllowedHeaders = defaultConfig?.CrossOriginConfig?.AllowedHeaders != null
? new List <string>(defaultConfig.CrossOriginConfig.AllowedHeaders)
: null;
requestConfig.CrossOriginConfig.AllowedHeaders = endpointAllowedHeaders ?? defaultAllowedHeaders ?? systemConfig.CrossOriginConfig?.AllowedHeaders;
}
else
{
requestConfig.CrossOriginConfig = systemConfig.CrossOriginConfig;
}
// ----------------------------
// Merge Read Write Configuration
// ----------------------------
if (endpointConfig?.ReadWriteConfiguration != null || defaultConfig?.ReadWriteConfiguration != null)
{
requestConfig.ReadWriteConfiguration = new ApiMediaSerializerConfiguration
{
ReaderResolver = endpointConfig?.ReadWriteConfiguration?.ReaderResolver
?? defaultConfig?.ReadWriteConfiguration?.ReaderResolver
?? systemConfig.ReadWriteConfiguration?.ReaderResolver,
WriterResolver = endpointConfig?.ReadWriteConfiguration?.WriterResolver
?? defaultConfig?.ReadWriteConfiguration?.WriterResolver
?? systemConfig.ReadWriteConfiguration?.WriterResolver,
AcceptHeaderOverride = endpointConfig?.ReadWriteConfiguration?.AcceptHeaderOverride
?? defaultConfig?.ReadWriteConfiguration?.AcceptHeaderOverride
?? systemConfig.ReadWriteConfiguration?.AcceptHeaderOverride,
};
var endpointReadableMediaTypes = endpointConfig?.ReadWriteConfiguration?.ReadableMediaTypes != null
? new List <string>(endpointConfig.ReadWriteConfiguration.ReadableMediaTypes)
: null;
var defaultReadableMediaTypes = defaultConfig?.ReadWriteConfiguration?.ReadableMediaTypes != null
? new List <string>(defaultConfig.ReadWriteConfiguration.ReadableMediaTypes)
: null;
var endpointWriteableMediaTypes = endpointConfig?.ReadWriteConfiguration?.WriteableMediaTypes != null
? new List <string>(endpointConfig.ReadWriteConfiguration.WriteableMediaTypes)
: null;
var defaultWriteableMediaTypes = defaultConfig?.ReadWriteConfiguration?.WriteableMediaTypes != null
? new List <string>(defaultConfig.ReadWriteConfiguration.WriteableMediaTypes)
: null;
requestConfig.ReadWriteConfiguration.ReadableMediaTypes = endpointReadableMediaTypes
?? defaultReadableMediaTypes
?? systemConfig.ReadWriteConfiguration?.ReadableMediaTypes;
requestConfig.ReadWriteConfiguration.WriteableMediaTypes = endpointWriteableMediaTypes
?? defaultWriteableMediaTypes
?? systemConfig.ReadWriteConfiguration?.WriteableMediaTypes;
}
else
{
requestConfig.ReadWriteConfiguration = systemConfig.ReadWriteConfiguration;
}
// ------------------------------------
// Merge Validation Error Configuration
// ------------------------------------
if (endpointConfig?.ValidationErrorConfiguration != null || defaultConfig?.ValidationErrorConfiguration != null)
{
requestConfig.ValidationErrorConfiguration = new ApiValidationErrorConfiguration
{
UriBindingError = endpointConfig?.ValidationErrorConfiguration?.UriBindingError
?? defaultConfig?.ValidationErrorConfiguration?.UriBindingError
?? systemConfig.ValidationErrorConfiguration?.UriBindingError,
UriBindingValueError = endpointConfig?.ValidationErrorConfiguration?.UriBindingValueError
?? defaultConfig?.ValidationErrorConfiguration?.UriBindingValueError
?? systemConfig.ValidationErrorConfiguration?.UriBindingValueError,
RequestDeserializationError = endpointConfig?.ValidationErrorConfiguration?.RequestDeserializationError
?? defaultConfig?.ValidationErrorConfiguration?.RequestDeserializationError
?? systemConfig.ValidationErrorConfiguration?.RequestDeserializationError,
HttpStatusMode = endpointConfig?.ValidationErrorConfiguration?.HttpStatusMode
?? defaultConfig?.ValidationErrorConfiguration?.HttpStatusMode
?? systemConfig.ValidationErrorConfiguration.HttpStatusMode
};
}
else
{
requestConfig.ValidationErrorConfiguration = systemConfig.ValidationErrorConfiguration;
}
return(requestConfig);
}
/// <summary>Gets the route information.</summary>
/// <param name="context">The context.</param>
/// <param name="resolver">The resolver.</param>
/// <param name="routes">The routes.</param>
/// <param name="defaultRequestConfiguration">The default request configuration.</param>
/// <returns></returns>
private static async Task <ApiRoutingItem> GetRoutingItem(this ApiRequestContext context,
IUriRouteResolver resolver,
IApiRoutingTable routes,
IDeepSleepRequestConfiguration defaultRequestConfiguration)
{
// -----------------------------------------------------------------
// We want to trick the routing engine to treat HEAD requests as GET
// http://tools.ietf.org/html/rfc7231#section-4.3.2
// -----------------------------------------------------------------
ApiRoutingItem routeInfo;
if (context.Request.Method.In(StringComparison.InvariantCultureIgnoreCase, "HEAD"))
{
routeInfo = await resolver.MatchRoute(
routes,
"HEAD",
context.Request.Path).ConfigureAwait(false);
if (routeInfo == null)
{
routeInfo = await resolver.MatchRoute(
routes,
"GET",
context.Request.Path).ConfigureAwait(false);
if (routeInfo != null)
{
var enableHeadForGetRequests = routeInfo.Configuration?.EnableHeadForGetRequests
?? defaultRequestConfiguration?.EnableHeadForGetRequests
?? ApiRequestContext.GetDefaultRequestConfiguration().EnableHeadForGetRequests
?? true;
if (!enableHeadForGetRequests)
{
routeInfo = null;
}
}
}
}
else if (context.Request.IsCorsPreflightRequest())
{
if (context.Request.CrossOriginRequest.AccessControlRequestMethod.In(StringComparison.InvariantCultureIgnoreCase, "HEAD"))
{
routeInfo = await resolver.MatchRoute(
routes,
context.Request.CrossOriginRequest.AccessControlRequestMethod,
context.Request.Path).ConfigureAwait(false);
if (routeInfo == null)
{
routeInfo = await resolver.MatchRoute(
routes,
"GET",
context.Request.Path).ConfigureAwait(false);
if (routeInfo != null)
{
var enableHeadForGetRequests = routeInfo.Configuration?.EnableHeadForGetRequests
?? defaultRequestConfiguration?.EnableHeadForGetRequests
?? ApiRequestContext.GetDefaultRequestConfiguration().EnableHeadForGetRequests
?? true;
if (!enableHeadForGetRequests)
{
routeInfo = null;
}
}
}
}
else
{
routeInfo = await resolver.MatchRoute(
routes,
context.Request.CrossOriginRequest.AccessControlRequestMethod,
context.Request.Path).ConfigureAwait(false);
}
}
else
{
routeInfo = await resolver.MatchRoute(
routes,
context.Request.Method,
context.Request.Path).ConfigureAwait(false);
}
return(routeInfo);
}
/// <summary>Processes the HTTP request cross origin resource sharing preflight.</summary>
/// <param name="context">The context.</param>
/// <param name="routes">The routes.</param>
/// <param name="resolver">The resolver.</param>
/// <param name="defaultRequestConfiguration">The default request configuration.</param>
/// <returns></returns>
internal static async Task <bool> ProcessHttpRequestCrossOriginResourceSharingPreflight(
this ApiRequestContext context,
IApiRoutingTable routes,
IUriRouteResolver resolver,
IDeepSleepRequestConfiguration defaultRequestConfiguration)
{
if (!context.RequestAborted.IsCancellationRequested)
{
if (context.Request?.IsCorsPreflightRequest() ?? false)
{
var methods = (context.Routing?.Template?.Locations ?? new List <ApiEndpointLocation>())
.Where(r => !string.IsNullOrWhiteSpace(r.HttpMethod))
.Select(r => r.HttpMethod.ToUpper())
.Distinct()
.ToList();
// Need to include the auto-enabled HEAD method if configured on the get endpoint (if available)
var hasGet = methods.FirstOrDefault(m => m.Equals("GET", StringComparison.InvariantCultureIgnoreCase)) != null;
if (hasGet)
{
var hasHead = methods.FirstOrDefault(m => m.Equals("HEAD", StringComparison.InvariantCultureIgnoreCase)) != null;
if (!hasHead)
{
if (resolver != null)
{
var getMatch = await resolver.MatchRoute(
routes,
"GET",
context.Request.Path).ConfigureAwait(false);
if (getMatch != null)
{
var enableHeadForGetRequests = getMatch.Configuration?.EnableHeadForGetRequests
?? defaultRequestConfiguration?.EnableHeadForGetRequests
?? ApiRequestContext.GetDefaultRequestConfiguration().EnableHeadForGetRequests
?? true;
if (enableHeadForGetRequests)
{
methods.Add("HEAD");
}
}
}
}
}
context.Response.StatusCode = 200;
context.Response.AddHeader("Access-Control-Allow-Methods", string.Join(", ", methods).Trim());
if (!string.IsNullOrWhiteSpace(context.Request?.CrossOriginRequest?.AccessControlRequestHeaders))
{
var allowHeaders = (context.Configuration?.CrossOriginConfig?.AllowedHeaders ?? new string[] { })
.Distinct()
.Where(i => !string.IsNullOrWhiteSpace(i))
.Select(i => i.Trim())
.ToList();
if (allowHeaders.Count > 0 && allowHeaders.Contains("*"))
{
context.Response.AddHeader("Access-Control-Allow-Headers", context.Request.CrossOriginRequest.AccessControlRequestHeaders);
}
else
{
context.Response.AddHeader("Access-Control-Allow-Headers", string.Join(", ", allowHeaders));
}
}
if (context.Configuration?.CrossOriginConfig?.MaxAgeSeconds.HasValue ?? false)
{
context.Response.AddHeader("Access-Control-Max-Age", $"{context.Configuration.CrossOriginConfig.MaxAgeSeconds.Value}");
}
return(false);
}
return(true);
}
return(false);
}