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94 changes: 83 additions & 11 deletions
94
01-Core/Jinget.Core/ExtensionMethods/HttpContextExtensions.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,22 +1,94 @@ | ||
| namespace Jinget.Core.ExtensionMethods; | ||
| using System.Net; | ||
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|
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| namespace Jinget.Core.ExtensionMethods; | ||
|
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| public static class HttpContextExtensions | ||
| { | ||
| /// <summary> | ||
| /// Check if given request is a multipart request or not | ||
| /// Determines whether the current HTTP request has a multipart content type (specifically "multipart/form-data"). | ||
| /// </summary> | ||
| public static bool IsMultipartContentType(this HttpContext context) => | ||
| context.Request.GetTypedHeaders().ContentType != null && | ||
| context.Request.GetTypedHeaders().ContentType.MediaType.Value.ToLower().StartsWith("multipart/form-data"); | ||
| /// <param name="context">The HttpContext representing the current HTTP request.</param> | ||
| /// <returns>True if the content type is multipart/form-data; otherwise, false.</returns> | ||
| /// <remarks> | ||
| /// This method checks the Content-Type header of the request to determine if it starts with "multipart/form-data". | ||
| /// It uses the GetTypedHeaders() extension method for robust header parsing and performs a case-insensitive comparison. | ||
| /// </remarks> | ||
| public static bool IsMultipartContentType(this HttpContext context) | ||
| { | ||
| // Retrieve the parsed Content-Type header from the request. | ||
| var contentTypeHeader = context.Request.GetTypedHeaders().ContentType; | ||
|
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| // Check if the Content-Type header exists. | ||
| if (contentTypeHeader != null) | ||
| { | ||
| // Retrieve the media type value from the parsed header. | ||
| var mediaType = contentTypeHeader.MediaType.Value; | ||
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| // Check if the media type value exists and starts with "multipart/form-data" (case-insensitive). | ||
| if (mediaType != null && mediaType.StartsWith("multipart/form-data", StringComparison.CurrentCultureIgnoreCase)) | ||
| { | ||
| return true; // It's a multipart/form-data request. | ||
| } | ||
| } | ||
|
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| return false; // It's not a multipart/form-data request. | ||
| } | ||
|
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| /// <summary> | ||
| /// Get request connecton ip address | ||
| /// Retrieves the client's IP address from the HttpContext. | ||
| /// </summary> | ||
| public static string GetIpAddress(this HttpContext context) => | ||
| context.Connection.RemoteIpAddress == null | ||
| ? "Unknown" | ||
| : context.Connection.RemoteIpAddress.ToString(); | ||
| /// <param name="context">The HttpContext from which to retrieve the IP address.</param> | ||
| /// <param name="customClientIpHeader"> | ||
| /// The header name containing the client's IP address (e.g., "X-Forwarded-For"). | ||
| /// Defaults to "X-Forwarded-For". | ||
| /// </param> | ||
| /// <returns> | ||
| /// The client's IP address as a string, or "Unknown" if the IP address cannot be determined. | ||
| /// </returns> | ||
| /// <remarks> | ||
| /// This method first attempts to retrieve the IP address from the specified custom header. | ||
| /// If the header is not found or the IP address in the header is invalid, it falls back to the | ||
| /// RemoteIpAddress property of the HttpContext.Connection. | ||
| /// The RemoteIpAddress property represents the IP address of the immediate connection to the server. | ||
| /// In environments with reverse proxies or load balancers, the RemoteIpAddress may not represent | ||
| /// the actual client's IP address. | ||
| /// The method also validates the IP address retrieved from the custom header using IPAddress.TryParse. | ||
| /// </remarks> | ||
| public static string GetClientIpAddress(this HttpContext context, string customClientIpHeader = "X-Forwarded-For") | ||
| { | ||
| // Get the IP address of the immediate connection to the server. | ||
| // This may be the proxy or load balancer's IP, not the client's. | ||
| var ipAddress = context.Connection.RemoteIpAddress?.ToString(); | ||
|
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| // Check if the specified custom header contains the client's IP address. | ||
| if (context.Request.Headers.TryGetValue(customClientIpHeader, out var clientIpAddress)) | ||
| { | ||
| // Get the first IP address from the header (in case of multiple IPs). | ||
| var firstIp = clientIpAddress.ToString().Split(',')[0].Trim(); | ||
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| public static bool EndpointIsAuthorized(this HttpContext httpContext) | ||
| // Validate the IP address format. | ||
| if (IPAddress.TryParse(firstIp, out _)) | ||
| { | ||
| // If valid, use the IP address from the header. | ||
| ipAddress = firstIp; | ||
| } | ||
| } | ||
|
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| // Return the retrieved IP address, or "Unknown" if not found. | ||
| return ipAddress ?? "Unknown"; | ||
| } | ||
|
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| /// <summary> | ||
| /// Checks if the endpoint associated with the current HTTP request has the [Authorize] attribute. | ||
| /// </summary> | ||
| /// <param name="httpContext">The HttpContext for the current request.</param> | ||
| /// <returns>True if the endpoint has the [Authorize] attribute; otherwise, false.</returns> | ||
| /// <remarks> | ||
| /// This method retrieves the endpoint from the HttpContext and checks for the presence of the AuthorizeAttribute. | ||
| /// It returns true if the attribute is found; otherwise, it returns false. | ||
| /// This method does not evaluate authorization policies. It only checks for the existence of the attribute. | ||
| /// </remarks> | ||
| public static bool EndpointIsDecoratedWithAuthorizeAttribute(this HttpContext httpContext) | ||
| => httpContext.GetEndpoint()?.Metadata.GetMetadata<AuthorizeAttribute>() != null; | ||
|
|
||
| } |
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