689 lines
28 KiB
C#
689 lines
28 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.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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using SixLabors.ImageSharp;
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using SixLabors.ImageSharp.Processing;
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using SixLabors.ImageSharp.Formats.Png;
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using System.Net.Http;
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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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private readonly Alias _alias;
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public FileController(IWebHostEnvironment environment, IFileRepository files, IFolderRepository folders, IUserPermissions userPermissions, ILogManager logger, ITenantManager tenantManager)
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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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_alias = tenantManager.GetAlias();
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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 Folder = _folders.GetFolder(folderid);
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if (Folder != null && Folder.SiteId == _alias.SiteId && _userPermissions.IsAuthorized(User, PermissionNames.Browse, Folder.Permissions))
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{
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files = _files.GetFiles(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.Security, "Unauthorized File Get Attempt {FolderId}", folder);
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HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
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files = null;
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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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else
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized File Get Attempt {Folder}", folder);
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HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
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files = null;
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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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List<Models.File> files;
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Folder folder = _folders.GetFolder(siteId, WebUtility.UrlDecode(path));
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if (folder != null && folder.SiteId == _alias.SiteId && _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.Security, "Unauthorized File Get Attempt {SiteId} {Path}", siteId, path);
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HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
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files = 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 && file.Folder.SiteId == _alias.SiteId && _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.Security, "Unauthorized File Get Attempt {FileId}", id);
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HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
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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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var File = _files.GetFile(file.FileId, false);
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if (ModelState.IsValid && File != null && File.Folder.SiteId == _alias.SiteId && _userPermissions.IsAuthorized(User, EntityNames.Folder, file.FolderId, PermissionNames.Edit))
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{
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if (File.Name != file.Name || File.FolderId != file.FolderId)
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{
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file.Folder = _folders.GetFolder(file.FolderId);
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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.Security, "Unauthorized File Put Attempt {File}", file);
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HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
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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 && file.Folder.SiteId == _alias.SiteId && _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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// remove file and thumbnails
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foreach(var f in Directory.GetFiles(Path.GetDirectoryName(filepath), Path.GetFileNameWithoutExtension(filepath) + ".*"))
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{
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System.IO.File.Delete(f);
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}
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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.Security, "Unauthorized File Delete Attempt {FileId}", id);
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HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
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}
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}
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// GET api/<controller>/upload?url=x&folderid=y&name=z
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[HttpGet("upload")]
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public async Task<Models.File> UploadFile(string url, string folderid, string name)
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{
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Models.File file = null;
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Folder folder = null;
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int FolderId;
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if (int.TryParse(folderid, out FolderId))
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{
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folder = _folders.GetFolder(FolderId);
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}
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if (folder != null && folder.SiteId == _alias.SiteId && _userPermissions.IsAuthorized(User, PermissionNames.Edit, folder.Permissions))
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{
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string folderPath = _folders.GetFolderPath(folder);
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CreateDirectory(folderPath);
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if (string.IsNullOrEmpty(name))
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{
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name = url.Substring(url.LastIndexOf("/", StringComparison.Ordinal) + 1);
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}
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// check for allowable file extensions
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if (!Constants.UploadableFiles.Split(',').Contains(Path.GetExtension(name).ToLower().Replace(".", "")))
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Create, "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 (!name.IsPathOrFileValid())
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Create, $"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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string targetPath = Path.Combine(folderPath, name);
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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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using (var client = new HttpClient())
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{
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using (var stream = await client.GetStreamAsync(url))
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{
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using (var fileStream = new FileStream(targetPath, FileMode.CreateNew))
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{
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await stream.CopyToAsync(fileStream);
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}
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}
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}
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file = CreateFile(name, folder.FolderId, targetPath);
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if (file != null)
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{
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file = _files.AddFile(file);
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}
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}
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catch (Exception ex)
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{
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_logger.Log(LogLevel.Error, this, LogFunction.Create, ex, "File Could Not Be Downloaded From Url {Url} {Error}", url, ex.Message);
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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.Security, "Unauthorized File Download Attempt {FolderId} {Url}", folderid, url);
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HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
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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 formfile)
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{
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if (formfile.Length <= 0)
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{
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return;
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}
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// ensure filename is valid
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string token = ".part_";
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if (!formfile.FileName.IsPathOrFileValid() || !formfile.FileName.Contains(token))
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{
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return;
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}
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// check for allowable file extensions (ignore token)
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var extension = Path.GetExtension(formfile.FileName.Substring(0, formfile.FileName.IndexOf(token))).Replace(".", "");
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if (!Constants.UploadableFiles.Split(',').Contains(extension.ToLower()))
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{
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return;
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}
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string folderPath = "";
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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 Folder = _folders.GetFolder(FolderId);
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if (Folder != null && Folder.SiteId == _alias.SiteId && _userPermissions.IsAuthorized(User, PermissionNames.Edit, Folder.Permissions))
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{
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folderPath = _folders.GetFolderPath(Folder);
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}
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}
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else
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{
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FolderId = -1;
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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, formfile.FileName), FileMode.Create))
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{
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await formfile.CopyToAsync(stream);
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}
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string upload = await MergeFile(folderPath, formfile.FileName);
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if (upload != "" && FolderId != -1)
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{
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var file = CreateFile(upload, FolderId, Path.Combine(folderPath, upload));
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if (file != null)
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{
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_files.AddFile(file);
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}
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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.Security, "Unauthorized File Upload Attempt {Folder} {File}", folder, formfile.FileName);
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HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
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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_001_999
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string token = ".part_";
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string parts = Path.GetExtension(filename)?.Replace(token, ""); // returns "001_999"
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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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// 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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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) && !Path.GetFileName(f).StartsWith(filename));
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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 && file.Folder.SiteId == _alias.SiteId && _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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else
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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 = (int)HttpStatusCode.NotFound;
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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.Security, "Unauthorized File Access Attempt {FileId}", id);
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HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
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}
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string errorPath = Path.Combine(GetFolderPath("wwwroot/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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[HttpGet("image/{id}/{width}/{height}/{mode}/{position}/{background}/{rotate}/{recreate}")]
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public IActionResult GetImage(int id, int width, int height, string mode, string position, string background, string rotate, string recreate)
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{
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var file = _files.GetFile(id);
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if (file != null && file.Folder.SiteId == _alias.SiteId && _userPermissions.IsAuthorized(User, PermissionNames.View, file.Folder.Permissions))
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{
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if (Constants.ImageFiles.Split(',').Contains(file.Extension.ToLower()))
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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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// validation
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|
if (!Enum.TryParse(mode, true, out ResizeMode _)) mode = "crop";
|
|
if (!Enum.TryParse(position, true, out AnchorPositionMode _)) position = "center";
|
|
if (!Color.TryParseHex("#" + background, out _)) background = "000000";
|
|
if (!int.TryParse(rotate, out _)) rotate = "0";
|
|
rotate = (int.Parse(rotate) < 0 || int.Parse(rotate) > 360) ? "0" : rotate;
|
|
if (!bool.TryParse(recreate, out _)) recreate = "false";
|
|
|
|
string imagepath = filepath.Replace(Path.GetExtension(filepath), "." + width.ToString() + "x" + height.ToString() + ".png");
|
|
if (!System.IO.File.Exists(imagepath) || bool.Parse(recreate))
|
|
{
|
|
if ((_userPermissions.IsAuthorized(User, PermissionNames.Edit, file.Folder.Permissions) ||
|
|
!string.IsNullOrEmpty(file.Folder.ImageSizes) && file.Folder.ImageSizes.ToLower().Split(",").Contains(width.ToString() + "x" + height.ToString())))
|
|
{
|
|
imagepath = CreateImage(filepath, width, height, mode, position, background, rotate, imagepath);
|
|
}
|
|
else
|
|
{
|
|
_logger.Log(LogLevel.Error, this, LogFunction.Security, "Invalid Image Size For Folder {Folder} {Width} {Height}", file.Folder, width, height);
|
|
HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
|
|
}
|
|
}
|
|
if (!string.IsNullOrEmpty(imagepath))
|
|
{
|
|
return PhysicalFile(imagepath, file.GetMimeType());
|
|
}
|
|
else
|
|
{
|
|
_logger.Log(LogLevel.Error, this, LogFunction.Create, "Error Displaying Image For File {File} {Width} {Height}", file, width, height);
|
|
HttpContext.Response.StatusCode = (int)HttpStatusCode.NotFound;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
_logger.Log(LogLevel.Error, this, LogFunction.Read, "File Does Not Exist {FileId} {FilePath}", id, filepath);
|
|
HttpContext.Response.StatusCode = (int)HttpStatusCode.NotFound;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
_logger.Log(LogLevel.Error, this, LogFunction.Security, "File Is Not An Image {File}", file);
|
|
HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
_logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized File Access Attempt {FileId}", id);
|
|
HttpContext.Response.StatusCode = (int)HttpStatusCode.Forbidden;
|
|
}
|
|
|
|
string errorPath = Path.Combine(GetFolderPath("wwwroot/images"), "error.png");
|
|
return System.IO.File.Exists(errorPath) ? PhysicalFile(errorPath, MimeUtilities.GetMimeType(errorPath)) : null;
|
|
}
|
|
|
|
private string CreateImage(string filepath, int width, int height, string mode, string position, string background, string rotate, string imagepath)
|
|
{
|
|
try
|
|
{
|
|
using (var stream = new FileStream(filepath, FileMode.Open, FileAccess.Read))
|
|
{
|
|
stream.Position = 0;
|
|
using (var image = Image.Load(stream))
|
|
{
|
|
int.TryParse(rotate, out int angle);
|
|
Enum.TryParse(mode, true, out ResizeMode resizemode);
|
|
Enum.TryParse(position, true, out AnchorPositionMode anchorpositionmode);
|
|
|
|
image.Mutate(x => x
|
|
.AutoOrient() // auto orient the image
|
|
.Rotate(angle)
|
|
.Resize(new ResizeOptions
|
|
{
|
|
Mode = resizemode,
|
|
Position = anchorpositionmode,
|
|
Size = new Size(width, height)
|
|
})
|
|
.BackgroundColor(Color.ParseHex("#" + background)));
|
|
|
|
image.Save(imagepath, new PngEncoder());
|
|
}
|
|
}
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
_logger.Log(LogLevel.Error, this, LogFunction.Security, ex, "Error Creating Image For File {FilePath} {Width} {Height} {Mode} {Rotate} {Error}", filepath, width, height, mode, rotate, ex.Message);
|
|
imagepath = "";
|
|
}
|
|
|
|
return imagepath;
|
|
}
|
|
|
|
private string GetFolderPath(string folder)
|
|
{
|
|
return Utilities.PathCombine(_environment.ContentRootPath, folder);
|
|
}
|
|
|
|
private void CreateDirectory(string folderpath)
|
|
{
|
|
if (!Directory.Exists(folderpath))
|
|
{
|
|
string path = "";
|
|
var separators = new char[] { Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar };
|
|
string[] folders = folderpath.Split(separators, StringSplitOptions.RemoveEmptyEntries);
|
|
foreach (string folder in folders)
|
|
{
|
|
path = Utilities.PathCombine(path, folder, Path.DirectorySeparatorChar.ToString());
|
|
if (!Directory.Exists(path))
|
|
{
|
|
Directory.CreateDirectory(path);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private Models.File CreateFile(string filename, int folderid, string filepath)
|
|
{
|
|
Models.File file = null;
|
|
|
|
int size = 0;
|
|
var folder = _folders.GetFolder(folderid);
|
|
if (folder.Capacity != 0)
|
|
{
|
|
foreach (var f in _files.GetFiles(folderid))
|
|
{
|
|
size += f.Size;
|
|
}
|
|
}
|
|
|
|
FileInfo fileinfo = new FileInfo(filepath);
|
|
if (folder.Capacity == 0 || ((size + fileinfo.Length) / 1000000) < folder.Capacity)
|
|
{
|
|
file = new Models.File();
|
|
file.Name = filename;
|
|
file.FolderId = folderid;
|
|
|
|
file.Extension = fileinfo.Extension.ToLower().Replace(".", "");
|
|
file.Size = (int)fileinfo.Length;
|
|
file.ImageHeight = 0;
|
|
file.ImageWidth = 0;
|
|
|
|
if (Constants.ImageFiles.Split(',').Contains(file.Extension.ToLower()))
|
|
{
|
|
try
|
|
{
|
|
FileStream stream = new FileStream(filepath, FileMode.Open, FileAccess.Read);
|
|
using (Image image = Image.Load(stream))
|
|
{
|
|
file.ImageHeight = image.Height;
|
|
file.ImageWidth = image.Width;
|
|
}
|
|
stream.Close();
|
|
}
|
|
catch
|
|
{
|
|
// error opening image file
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
System.IO.File.Delete(filepath);
|
|
_logger.Log(LogLevel.Warning, this, LogFunction.Create, "File Exceeds Folder Capacity {Folder} {File}", folder, filepath);
|
|
}
|
|
|
|
return file;
|
|
}
|
|
}
|
|
}
|