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using System;using System.Collections.Generic;using System.IO;using System.Text;
namespace Apewer.Web{
/// <summary>静态站点控制器。</summary>
public class StaticController : ApiController {
/// <summary></summary>
public StaticController() { AllowFunction = false; AfterInitialized = () => { if (Request == null || Request.Url == null) return; var path = MapPath(Request.Url.AbsolutePath); if (StorageUtility.DirectoryExists(path)) { ExecuteDirectory(path); return; } if (StorageUtility.FileExists(path)) { ExecuteFile(path); return; } Respond404(path); }; }
#region property
/// <summary>获取此静态站点的目录。</summary>
protected virtual string GetSiteDirectory() { var app = WebUtility.AppDirectory; var www = StorageUtility.CombinePath(app, "www"); if (!Directory.Exists(www)) return null; return www; }
/// <summary>响应 403 状态。</summary>
protected virtual void Respond403(string path) => Response.Error("403");
/// <summary>响应 404 状态。</summary>
protected virtual void Respond404(string path) => Response.Error("404");
/// <summary>从扩展名获取内容类型。</summary>
/// <remarks>例：<br/>GetContentType("txt") = "text/plain"</remarks>
protected virtual string GetContentType(string extension) => Mime(extension);
/// <summary>按扩展名获取过期时间，单位为秒。默认值为 0（不缓存）。</summary>
/// <remarks>例：<br/>GetExpires("txt") = 0</remarks>
protected virtual int GetExpires(string extension) => 0;
/// <summary>访问目录时，允许列出子项。默认值：false，不允许。</summary>
protected virtual bool AllowListChildren() => false;
string PrivateGetContentType(string extension) { var result = GetContentType(extension); if (string.IsNullOrEmpty(result)) result = Mime(extension); return result; }
#endregion
#region common
/// <summary>解析 URL 的路径，获取本地路径。</summary>
protected string MapPath(string urlPath) { var path = GetSiteDirectory(); if (!string.IsNullOrEmpty(urlPath)) { foreach (var split in urlPath.Split('/')) { var seg = split.SafeTrim(); if (string.IsNullOrEmpty(seg)) continue; if (seg == "." || seg == "..") continue; path = StorageUtility.CombinePath(path, seg); } } return path; }
void ExecuteFile(string path) { if (!File.Exists(path)) { Respond404(path); return; }
// 获取文件扩展名。
var ext = Path.GetExtension(path).SafeLower(); if (ext.Length > 1 && ext.StartsWith(".")) ext = ext.Substring(1);
// 按扩展名获取缓存过期时间。
var expires = GetExpires(ext); if (expires > 0) Response.Expires = expires;
// 按扩展名获取 Content-Type。
var type = PrivateGetContentType(ext);
// Server Side Includes
if (ext == "html" || ext == "htm" || ext == "shtml") { var html = ReadWithSSI(path); var bytes = html.ToBinary(); Response.Binary(bytes, type); } else { var bytes = StorageUtility.OpenFile(path, true); Response.Binary(bytes, type); } }
void ExecuteDirectory(string path) { if (!Directory.Exists(path)) { Respond404(path); return; }
var @default = GetDefaultFile(path); if (!string.IsNullOrEmpty(@default)) { ExecuteFile(@default); return; }
if (AllowListChildren()) { Response.Data = ListChildren(path); } Respond403(path); }
// Server Side Includes
string ReadWithSSI(string path, int recursive = 0) { if (recursive > 10) return "";
var input = StorageUtility.ReadFile(path, true); if (input == null || input.LongLength < 1) return "";
// 尝试以 UTF-8 解码。
var html = TextUtility.FromBinary(input); if (string.IsNullOrEmpty(html)) return "";
// 按首尾截取。
const string left = "<!--"; const string right = "-->"; const string head = "#include virtual="; var sb = new StringBuilder(); var text = html; while (true) { var offset = text.IndexOf(left); if (offset < 0) { sb.Append(text); break; } if (offset > 0) { sb.Append(text.Substring(0, offset)); text = text.Substring(offset + left.Length); } else text = text.Substring(left.Length); var length = text.IndexOf(right); if (length < 1) { sb.Append(left); sb.Append(text); break; } var inner = text.Substring(0, length); var temp = inner.SafeTrim(); if (temp.StartsWith(head)) { temp = temp.Substring(head.Length); temp = temp.Replace("\"", ""); var subPath = MapPath(temp); var subText = ReadWithSSI(subPath, recursive + 1); if (subText != null && subText.Length > 0) sb.Append(subText); } else { sb.Append(left); sb.Append(inner); sb.Append(right); } text = text.Substring(length + right.Length); }
var output = sb.ToString(); return output; }
#endregion
#region static
// 获取目录中的默认文件，返回文件的完整路径。
static string GetDefaultFile(string directory) { var subs = StorageUtility.GetSubFiles(directory); if (subs.Count < 0) return null; subs.Sort();
var names = new Dictionary<string, string>(); foreach (var sub in subs) { var name = Path.GetFileName(sub).ToLower(); if (names.ContainsKey(name)) continue; names.Add(name, sub); }
if (names.ContainsKey("index.html")) return names["index.html"]; if (names.ContainsKey("index.htm")) return names["index.htm"]; if (names.ContainsKey("default.html")) return names["default.html"]; if (names.ContainsKey("default.htm")) return names["default.htm"];
return null; }
/// <summary>列出子项。可指定筛选器，传入完整路径。</summary>
static Json ListChildren(string directory) { if (!Directory.Exists(directory)) return null; var json = Json.NewObject(); json.SetProperty("directories", ListDirectories(directory)); json.SetProperty("files", ListFiles(directory)); return json; }
static Json ListDirectories(string directory) { var array = Json.NewArray(); var subs = StorageUtility.GetSubDirectories(directory); subs.Sort(); foreach (var sub in subs) { var name = Path.GetDirectoryName(sub); var lower = name.SafeLower(); if (lower == ".") continue; if (lower == "..") continue; if (lower == "@eadir") continue; // Synology
if (lower == "#recycle") continue; // Synology
if (lower == "$recycle.bin") continue; // Windows
if (lower == "recycler") continue; // Windows
if (lower == "system volume information") continue; // Windows
var json = Json.NewObject(); json.SetProperty("name", name); try { var info = new DirectoryInfo(sub); json.SetProperty("modified", info.LastWriteTimeUtc.ToStamp()); } catch { } array.AddItem(json); } return array; }
static Json ListFiles(string directory) { var array = Json.NewArray(); var subs = StorageUtility.GetSubFiles(directory); subs.Sort(); foreach (var sub in subs) { var name = Path.GetFileName(sub); var lower = name.SafeLower(); if (lower == ".ds_store") continue; // macOS
if (lower == ".localized") continue; // macOS
if (lower == "desktop.ini") continue; // Windiows
if (lower == "thumbs.db") continue; // Windiows
var json = Json.NewObject(); json.SetProperty("name", name); try { var info = new FileInfo(sub); json.SetProperty("size", info.Length); json.SetProperty("modified", info.LastWriteTimeUtc.ToStamp()); } catch { } array.AddItem(json); } return array; }
static string Mime(string extension) { if (!string.IsNullOrEmpty(extension)) { var lower = extension.ToLower(); switch (lower) { case "css": return "text/css; charset=utf-8"; case "htm": return "text/html; charset=utf-8"; case "html": return "text/html; charset=utf-8"; case "js": return "application/javascript; charset=utf-8"; // case "json": return "application/json";
case "json": return "text/json; charset=utf-8"; case "shtml": return "text/html; charset=utf-8"; } switch (lower) { // case "m3u8": return "application/vnd.apple.mpegurl";
case "m3u8": return "text/vnd.apple.mpegurl"; case "txt": return "text/plain"; case "xml": return "text/xml"; case "htc": return "text/x-component"; case "jad": return "text/vnd.sun.j2me.app-descriptor"; case "mml": return "text/mathml"; case "wml": return "text/vnd.wap.wml"; } switch (lower) { case "3gp": return "video/3gpp"; case "3gpp": return "video/3gpp"; case "7z": return "application/x-7z-compressed"; case "ai": return "application/postscript"; case "asf": return "video/x-ms-asf"; case "asx": return "video/x-ms-asf"; case "atom": return "application/atom+xml"; case "avi": return "video/x-msvideo"; case "bin": return "application/octet-stream"; case "bmp": return "image/x-ms-bmp"; case "cco": return "application/x-cocoa"; case "crt": return "application/x-x509-ca-cert"; case "deb": return "application/octet-stream"; case "der": return "application/x-x509-ca-cert"; case "dll": return "application/octet-stream"; case "dmg": return "application/octet-stream"; case "doc": return "application/msword"; case "docx": return "application/vnd.openxmlformats-officedocument.wordprocessingml.document"; case "ear": return "application/java-archive"; case "eot": return "application/vnd.ms-fontobject"; case "eps": return "application/postscript"; case "exe": return "application/octet-stream"; case "flv": return "video/x-flv"; case "gif": return "image/gif"; case "hqx": return "application/mac-binhex40"; case "ico": return "image/x-icon"; case "img": return "application/octet-stream"; case "iso": return "application/octet-stream"; case "jar": return "application/java-archive"; case "jardiff": return "application/x-java-archive-diff"; case "jng": return "image/x-jng"; case "jnlp": return "application/x-java-jnlp-file"; case "jpeg": return "image/jpeg"; case "jpg": return "image/jpeg"; case "kar": return "audio/midi"; case "kml": return "application/vnd.google-earth.kml+xml"; case "kmz": return "application/vnd.google-earth.kmz"; case "m4a": return "audio/x-m4a"; case "m4v": return "video/x-m4v"; case "mid": return "audio/midi"; case "midi": return "audio/midi"; case "mng": return "video/x-mng"; case "mov": return "video/quicktime"; case "mp3": return "audio/mpeg"; case "mp4": return "video/mp4"; case "mpeg": return "video/mpeg"; case "mpg": return "video/mpeg"; case "msi": return "application/octet-stream"; case "msm": return "application/octet-stream"; case "msp": return "application/octet-stream"; case "odg": return "application/vnd.oasis.opendocument.graphics"; case "odp": return "application/vnd.oasis.opendocument.presentation"; case "ods": return "application/vnd.oasis.opendocument.spreadsheet"; case "odt": return "application/vnd.oasis.opendocument.text"; case "ogg": return "audio/ogg"; case "pdb": return "application/x-pilot"; case "pdf": return "application/pdf"; case "pem": return "application/x-x509-ca-cert"; case "pl": return "application/x-perl"; case "pm": return "application/x-perl"; case "png": return "image/png"; case "ppt": return "application/vnd.ms-powerpoint"; case "pptx": return "application/vnd.openxmlformats-officedocument.presentationml.presentation"; case "prc": return "application/x-pilot"; case "ps": return "application/postscript"; case "ra": return "audio/x-realaudio"; case "rar": return "application/x-rar-compressed"; case "rpm": return "application/x-redhat-package-manager"; case "rss": return "application/rss+xml"; case "rtf": return "application/rtf"; case "run": return "application/x-makeself"; case "sea": return "application/x-sea"; case "sit": return "application/x-stuffit"; case "svg": return "image/svg+xml"; case "svgz": return "image/svg+xml"; case "swf": return "application/x-shockwave-flash"; case "tcl": return "application/x-tcl"; case "tif": return "image/tiff"; case "tiff": return "image/tiff"; case "tk": return "application/x-tcl"; case "ts": return "video/mp2t"; case "war": return "application/java-archive"; case "wbmp": return "image/vnd.wap.wbmp"; case "webm": return "video/webm"; case "webp": return "image/webp"; case "wmlc": return "application/vnd.wap.wmlc"; case "wmv": return "video/x-ms-wmv"; case "woff": return "font/woff"; case "woff2": return "font/woff2"; case "xhtml": return "application/xhtml+xml"; case "xls": return "application/vnd.ms-excel"; case "xlsx": return "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"; case "xpi": return "application/x-xpinstall"; case "xspf": return "application/xspf+xml"; case "zip": return "application/zip"; } }
return "application/octet-stream"; }
#endregion
}
}
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