551 lines
20 KiB
C#
551 lines
20 KiB
C#
using Microsoft.AspNetCore.Authorization;
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using Microsoft.AspNetCore.Hosting;
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using Microsoft.AspNetCore.Http;
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using Microsoft.AspNetCore.Mvc;
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using Oqtane.Models;
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using Oqtane.Shared;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Threading;
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using System.Threading.Tasks;
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using Oqtane.Security;
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using System.Linq;
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using System.Drawing;
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using System.Net;
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using Oqtane.Enums;
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using Oqtane.Infrastructure;
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using Oqtane.Repository;
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using Oqtane.Extensions;
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// ReSharper disable StringIndexOfIsCultureSpecific.1
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namespace Oqtane.Controllers
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{
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[Route(ControllerRoutes.ApiRoute)]
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public class FileController : Controller
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{
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private readonly IWebHostEnvironment _environment;
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private readonly IFileRepository _files;
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private readonly IFolderRepository _folders;
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private readonly IUserPermissions _userPermissions;
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private readonly ILogManager _logger;
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public FileController(IWebHostEnvironment environment, IFileRepository files, IFolderRepository folders, IUserPermissions userPermissions, ILogManager logger)
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{
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_environment = environment;
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_files = files;
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_folders = folders;
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_userPermissions = userPermissions;
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_logger = logger;
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}
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// GET: api/<controller>?folder=x
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[HttpGet]
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public IEnumerable<Models.File> Get(string folder)
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{
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List<Models.File> files = new List<Models.File>();
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int folderid;
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if (int.TryParse(folder, out folderid))
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{
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Folder f = _folders.GetFolder(folderid);
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if (f != null && _userPermissions.IsAuthorized(User, PermissionNames.Browse, f.Permissions))
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{
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files = _files.GetFiles(folderid).ToList();
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}
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}
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else
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{
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if (User.IsInRole(RoleNames.Host))
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{
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folder = GetFolderPath(folder);
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if (Directory.Exists(folder))
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{
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foreach (string file in Directory.GetFiles(folder))
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{
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files.Add(new Models.File {Name = Path.GetFileName(file), Extension = Path.GetExtension(file)?.Replace(".", "")});
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}
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}
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}
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}
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return files;
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}
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// GET: api/<controller>/siteId/folderPath
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[HttpGet("{siteId}/{path}")]
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public IEnumerable<Models.File> Get(int siteId, string path)
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{
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var folderPath = WebUtility.UrlDecode(path);
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Folder folder = _folders.GetFolder(siteId, folderPath);
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List<Models.File> files;
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if (folder != null)
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{
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if (_userPermissions.IsAuthorized(User, PermissionNames.Browse, folder.Permissions))
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{
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files = _files.GetFiles(folder.FolderId).ToList();
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}
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else
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Read, "User Not Authorized To Access Folder {folder}", folder);
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HttpContext.Response.StatusCode = 401;
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return null;
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}
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}
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else
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Read, "Folder Not Found {SiteId} {Path}", siteId, path);
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HttpContext.Response.StatusCode = 404;
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return null;
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}
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return files;
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}
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// GET api/<controller>/5
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[HttpGet("{id}")]
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public Models.File Get(int id)
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{
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Models.File file = _files.GetFile(id);
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if (file != null)
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{
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if (_userPermissions.IsAuthorized(User, PermissionNames.View, file.Folder.Permissions))
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{
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return file;
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}
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else
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Read, "User Not Authorized To Access File {File}", file);
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HttpContext.Response.StatusCode = 401;
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return null;
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}
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}
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else
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Read, "File Not Found {FileId}", id);
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HttpContext.Response.StatusCode = 404;
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return null;
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}
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}
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// PUT api/<controller>/5
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[HttpPut("{id}")]
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[Authorize(Roles = RoleNames.Registered)]
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public Models.File Put(int id, [FromBody] Models.File file)
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{
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if (ModelState.IsValid && _userPermissions.IsAuthorized(User, EntityNames.Folder, file.FolderId, PermissionNames.Edit))
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{
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file.Folder = _folders.GetFolder(file.FolderId);
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Models.File _file = _files.GetFile(id, false);
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if (_file.Name != file.Name || _file.FolderId != file.FolderId)
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{
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string folderpath = _folders.GetFolderPath(file.Folder);
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if (!Directory.Exists(folderpath))
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{
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Directory.CreateDirectory(folderpath);
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}
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System.IO.File.Move(_files.GetFilePath(_file), Path.Combine(folderpath, file.Name));
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}
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file.Extension = Path.GetExtension(file.Name).ToLower().Replace(".", "");
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file = _files.UpdateFile(file);
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_logger.Log(LogLevel.Information, this, LogFunction.Update, "File Updated {File}", file);
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}
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else
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Update, "User Not Authorized To Update File {File}", file);
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HttpContext.Response.StatusCode = 401;
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file = null;
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}
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return file;
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}
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// DELETE api/<controller>/5
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[HttpDelete("{id}")]
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[Authorize(Roles = RoleNames.Registered)]
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public void Delete(int id)
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{
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Models.File file = _files.GetFile(id);
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if (file != null)
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{
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if (_userPermissions.IsAuthorized(User, EntityNames.Folder, file.Folder.FolderId, PermissionNames.Edit))
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{
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_files.DeleteFile(id);
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string filepath = _files.GetFilePath(file);
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if (System.IO.File.Exists(filepath))
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{
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System.IO.File.Delete(filepath);
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}
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_logger.Log(LogLevel.Information, this, LogFunction.Delete, "File Deleted {File}", file);
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}
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else
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Delete, "User Not Authorized To Delete File {FileId}", id);
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HttpContext.Response.StatusCode = 401;
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}
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}
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else
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Delete, "File Not Found {FileId}", id);
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HttpContext.Response.StatusCode = 404;
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}
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}
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// GET api/<controller>/upload?url=x&folderid=y
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[HttpGet("upload")]
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public Models.File UploadFile(string url, string folderid)
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{
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Models.File file = null;
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Folder folder = _folders.GetFolder(int.Parse(folderid));
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if (folder == null || !_userPermissions.IsAuthorized(User, PermissionNames.Edit, folder.Permissions))
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Create,
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"User Not Authorized To Download File {Url} {FolderId}", url, folderid);
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HttpContext.Response.StatusCode = 401;
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return file;
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}
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string folderPath = _folders.GetFolderPath(folder);
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CreateDirectory(folderPath);
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string filename = url.Substring(url.LastIndexOf("/", StringComparison.Ordinal) + 1);
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// check for allowable file extensions
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if (!Constants.UploadableFiles.Split(',')
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.Contains(Path.GetExtension(filename).ToLower().Replace(".", "")))
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Create,
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"File Could Not Be Downloaded From Url Due To Its File Extension {Url}", url);
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HttpContext.Response.StatusCode = (int) HttpStatusCode.Conflict;
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return file;
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}
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if (!filename.IsPathOrFileValid())
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Create,
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$"File Could Not Be Downloaded From Url Due To Its File Name Not Allowed {url}");
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HttpContext.Response.StatusCode = (int) HttpStatusCode.Conflict;
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return file;
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}
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try
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{
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var client = new WebClient();
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string targetPath = Path.Combine(folderPath, filename);
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// remove file if it already exists
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if (System.IO.File.Exists(targetPath))
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{
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System.IO.File.Delete(targetPath);
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}
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client.DownloadFile(url, targetPath);
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file = _files.AddFile(CreateFile(filename, folder.FolderId, targetPath));
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}
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catch
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Create,
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"File Could Not Be Downloaded From Url {Url}", url);
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}
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return file;
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}
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// POST api/<controller>/upload
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[HttpPost("upload")]
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public async Task UploadFile(string folder, IFormFile file)
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{
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if (file.Length <= 0)
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{
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return;
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}
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if (!file.FileName.IsPathOrFileValid())
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{
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HttpContext.Response.StatusCode = (int) HttpStatusCode.Conflict;
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return;
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}
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string folderPath = "";
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if (int.TryParse(folder, out int folderId))
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{
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Folder virtualFolder = _folders.GetFolder(folderId);
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if (virtualFolder != null &&
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_userPermissions.IsAuthorized(User, PermissionNames.Edit, virtualFolder.Permissions))
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{
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folderPath = _folders.GetFolderPath(virtualFolder);
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}
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}
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else
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{
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if (User.IsInRole(RoleNames.Host))
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{
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folderPath = GetFolderPath(folder);
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}
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}
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if (!String.IsNullOrEmpty(folderPath))
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{
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CreateDirectory(folderPath);
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using (var stream = new FileStream(Path.Combine(folderPath, file.FileName), FileMode.Create))
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{
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await file.CopyToAsync(stream);
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}
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string upload = await MergeFile(folderPath, file.FileName);
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if (upload != "" && folderId != -1)
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{
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_files.AddFile(CreateFile(upload, folderId, Path.Combine(folderPath, upload)));
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}
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}
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else
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Create,
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"User Not Authorized To Upload File {Folder} {File}", folder, file);
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HttpContext.Response.StatusCode = 401;
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}
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}
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private async Task<string> MergeFile(string folder, string filename)
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{
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string merged = "";
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// parse the filename which is in the format of filename.ext.part_x_y
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string token = ".part_";
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string parts = Path.GetExtension(filename)?.Replace(token, ""); // returns "x_y"
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int totalparts = int.Parse(parts?.Substring(parts.IndexOf("_") + 1));
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filename = Path.GetFileNameWithoutExtension(filename); // base filename
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string[] fileParts = Directory.GetFiles(folder, filename + token + "*"); // list of all file parts
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// if all of the file parts exist ( note that file parts can arrive out of order )
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if (fileParts.Length == totalparts && CanAccessFiles(fileParts))
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{
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// merge file parts
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bool success = true;
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using (var stream = new FileStream(Path.Combine(folder, filename + ".tmp"), FileMode.Create))
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{
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foreach (string filepart in fileParts)
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{
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try
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{
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using (FileStream chunk = new FileStream(filepart, FileMode.Open))
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{
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await chunk.CopyToAsync(stream);
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}
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}
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catch
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{
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success = false;
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}
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}
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}
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// delete file parts and rename file
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if (success)
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{
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foreach (string filepart in fileParts)
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{
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System.IO.File.Delete(filepart);
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}
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// check for allowable file extensions
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if (!Constants.UploadableFiles.Split(',').Contains(Path.GetExtension(filename)?.ToLower().Replace(".", "")))
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{
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System.IO.File.Delete(Path.Combine(folder, filename + ".tmp"));
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}
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else
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{
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// remove file if it already exists
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if (System.IO.File.Exists(Path.Combine(folder, filename)))
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{
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System.IO.File.Delete(Path.Combine(folder, filename));
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}
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// rename file now that the entire process is completed
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System.IO.File.Move(Path.Combine(folder, filename + ".tmp"), Path.Combine(folder, filename));
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_logger.Log(LogLevel.Information, this, LogFunction.Create, "File Uploaded {File}", Path.Combine(folder, filename));
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}
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merged = filename;
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}
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}
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// clean up file parts which are more than 2 hours old ( which can happen if a prior file upload failed )
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var cleanupFiles = Directory.EnumerateFiles(folder, "*" + token + "*")
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.Where(f => Path.GetExtension(f).StartsWith(token));
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foreach (var file in cleanupFiles)
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{
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var createdDate = System.IO.File.GetCreationTime(file).ToUniversalTime();
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if (createdDate < DateTime.UtcNow.AddHours(-2))
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{
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System.IO.File.Delete(file);
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}
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}
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return merged;
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}
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private bool CanAccessFiles(string[] files)
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{
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// ensure files are not locked by another process ( ie. still being written to )
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bool canaccess = true;
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FileStream stream = null;
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foreach (string file in files)
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{
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int attempts = 0;
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bool locked = true;
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while (attempts < 5 && locked)
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{
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try
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{
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stream = System.IO.File.Open(file, FileMode.Open, FileAccess.Read, FileShare.None);
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locked = false;
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}
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catch // file is locked by another process
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{
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Thread.Sleep(1000); // wait 1 second
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}
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finally
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{
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if (stream != null)
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{
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stream.Close();
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}
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}
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attempts += 1;
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}
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if (locked && canaccess)
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{
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canaccess = false;
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}
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}
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return canaccess;
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}
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/// <summary>
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/// Get file with header
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/// Content-Disposition: inline
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/// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Disposition
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/// </summary>
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/// <param name="id">File Id from Oqtane filesystem </param>
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/// <returns>file content</returns>
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// GET api/<controller>/download/5
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[HttpGet("download/{id}")]
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public IActionResult DownloadInline(int id)
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{
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return Download(id, false);
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}
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/// <summary>
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/// Get file with header
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/// Content-Disposition: attachment; filename="filename.jpg"
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/// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Disposition
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///
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/// </summary>
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/// <param name="id">File Id from Oqtane filesystem</param>
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/// <returns></returns>
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// GET api/<controller>/download/5/attach
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[HttpGet("download/{id}/attach")]
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public IActionResult DownloadAttachment(int id)
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{
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return Download(id, true);
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}
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private IActionResult Download(int id, bool asAttachment)
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{
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var file = _files.GetFile(id);
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if (file != null)
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{
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if (_userPermissions.IsAuthorized(User, PermissionNames.View, file.Folder.Permissions))
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{
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var filepath = _files.GetFilePath(file);
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if (System.IO.File.Exists(filepath))
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{
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var result = asAttachment
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? PhysicalFile(filepath, file.GetMimeType(), file.Name)
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: PhysicalFile(filepath, file.GetMimeType());
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return result;
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}
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_logger.Log(LogLevel.Error, this, LogFunction.Read, "File Does Not Exist {FileId} {FilePath}", id, filepath);
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HttpContext.Response.StatusCode = 404;
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}
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else
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Read, "User Not Authorized To Access File {FileId}", id);
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HttpContext.Response.StatusCode = 401;
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}
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}
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else
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Read, "File Not Found {FileId}", id);
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HttpContext.Response.StatusCode = 404;
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}
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string errorPath = Path.Combine(GetFolderPath("images"), "error.png");
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return System.IO.File.Exists(errorPath) ? PhysicalFile(errorPath, MimeUtilities.GetMimeType(errorPath)) : null;
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}
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private string GetFolderPath(string folder)
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{
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return Utilities.PathCombine(_environment.ContentRootPath, folder);
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}
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private void CreateDirectory(string folderpath)
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{
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if (!Directory.Exists(folderpath))
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{
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string path = "";
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var separators = new char[] {Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar};
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string[] folders = folderpath.Split(separators, StringSplitOptions.RemoveEmptyEntries);
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foreach (string folder in folders)
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{
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path = Utilities.PathCombine(path, folder, Path.DirectorySeparatorChar.ToString());
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if (!Directory.Exists(path))
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{
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Directory.CreateDirectory(path);
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}
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}
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}
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}
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private Models.File CreateFile(string filename, int folderid, string filepath)
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{
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Models.File file = new Models.File();
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file.Name = filename;
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file.FolderId = folderid;
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FileInfo fileinfo = new FileInfo(filepath);
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file.Extension = fileinfo.Extension.ToLower().Replace(".", "");
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file.Size = (int) fileinfo.Length;
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file.ImageHeight = 0;
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file.ImageWidth = 0;
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if (Constants.ImageFiles.Split(',').Contains(file.Extension.ToLower()))
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{
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FileStream stream = new FileStream(filepath, FileMode.Open, FileAccess.Read);
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using (var image = Image.FromStream(stream))
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{
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file.ImageHeight = image.Height;
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file.ImageWidth = image.Width;
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}
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stream.Close();
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}
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return file;
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}
|
|
}
|
|
}
|