using NewLife.Remoting;
namespace NewLife.Http;
/// <summary>静态文件处理器</summary>
public class StaticFilesHandler : IHttpHandler
{
#region 属性
/// <summary>映射路径</summary>
public String Path { get; set; } = null!;
/// <summary>内容目录</summary>
public String ContentPath { get; set; } = null!;
#endregion
/// <summary>处理请求</summary>
/// <param name="context"></param>
public virtual void ProcessRequest(IHttpContext context)
{
if (!context.Path.StartsWithIgnoreCase(Path)) throw new ApiException(ApiCode.NotFound, $"File {context.Path} not found");
var file = context.Path[Path.Length..];
file = ContentPath.CombinePath(file);
// 路径安全检查,防止越界
if (!file.GetFullPath().StartsWithIgnoreCase(ContentPath.GetFullPath()))
throw new ApiException(ApiCode.NotFound, $"File {context.Path} not found");
var fi = file.AsFile();
if (!fi.Exists) throw new ApiException(ApiCode.NotFound, $"File {context.Path} not found");
var contentType = fi.Extension switch
{
".htm" => "text/html",
".html" => "text/html",
".txt" => "text/plain",
".log" => "text/plain",
".xml" => "text/xml",
".json" => "text/json",
".js" => "text/javascript",
".css" => "text/css",
".png" => "image/png",
".jpg" => "image/jpg",
".gif" => "image/gif",
_ => null,
};
// 确保使用完以后关闭文件流
using var fs = fi.OpenRead();
context.Response.SetResult(fs, contentType);
}
}
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