130 lines
5.3 KiB
C#
130 lines
5.3 KiB
C#
/*
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*
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* (c) Copyright Ascensio System Limited 2010-2018
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*
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* This program is freeware. You can redistribute it and/or modify it under the terms of the GNU
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* General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html).
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* In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that
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* Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
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*
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* THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
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* FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
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*
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* You can contact Ascensio System SIA by email at sales@onlyoffice.com
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*
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* The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display
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* Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
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*
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* Pursuant to Section 7 § 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains
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* relevant author attributions when distributing the software. If the display of the logo in its graphic
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* form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE"
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* in every copy of the program you distribute.
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* Pursuant to Section 7 § 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
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*
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*/
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using System.Web;
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using ASC.Common;
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using ASC.Common.Utils;
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using ASC.Core.Common;
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using ASC.Files.Core;
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using ASC.Files.Core.Security;
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using ASC.Web.Core.Files;
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using ASC.Web.Files.Classes;
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using FileShare = ASC.Files.Core.Security.FileShare;
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namespace ASC.Web.Files.Utils
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{
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public class FileShareLink
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{
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public FileUtility FileUtility { get; }
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public FilesLinkUtility FilesLinkUtility { get; }
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public BaseCommonLinkUtility BaseCommonLinkUtility { get; }
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public Global Global { get; }
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public FileSecurity FileSecurity { get; }
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public FileShareLink(
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FileUtility fileUtility,
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FilesLinkUtility filesLinkUtility,
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BaseCommonLinkUtility baseCommonLinkUtility,
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Global global,
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FileSecurity fileSecurity)
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{
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FileUtility = fileUtility;
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FilesLinkUtility = filesLinkUtility;
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BaseCommonLinkUtility = baseCommonLinkUtility;
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Global = global;
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FileSecurity = fileSecurity;
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}
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public string GetLink<T>(File<T> file, bool withHash = true)
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{
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var url = file.DownloadUrl;
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if (FileUtility.CanWebView(file.Title))
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url = FilesLinkUtility.GetFileWebPreviewUrl(FileUtility, file.Title, file.ID);
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if (withHash)
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{
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var linkParams = CreateKey(file.ID);
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url += "&" + FilesLinkUtility.DocShareKey + "=" + HttpUtility.UrlEncode(linkParams);
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}
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return BaseCommonLinkUtility.GetFullAbsolutePath(url);
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}
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public string CreateKey<T>(T fileId)
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{
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return Signature.Create(fileId, Global.GetDocDbKey());
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}
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public string Parse(string doc)
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{
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return Signature.Read<string>(doc ?? string.Empty, Global.GetDocDbKey());
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}
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public T Parse<T>(string doc)
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{
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return Signature.Read<T>(doc ?? string.Empty, Global.GetDocDbKey());
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}
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public bool Check<T>(string doc, bool checkRead, IFileDao<T> fileDao, out File<T> file)
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{
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var fileShare = Check(doc, fileDao, out file);
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return (!checkRead && (fileShare == FileShare.ReadWrite || fileShare == FileShare.Review || fileShare == FileShare.FillForms || fileShare == FileShare.Comment))
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|| (checkRead && fileShare != FileShare.Restrict);
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}
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public FileShare Check<T>(string doc, IFileDao<T> fileDao, out File<T> file)
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{
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file = null;
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if (string.IsNullOrEmpty(doc)) return FileShare.Restrict;
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var fileId = Parse<T>(doc);
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file = fileDao.GetFile(fileId);
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if (file == null) return FileShare.Restrict;
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var filesSecurity = FileSecurity;
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if (filesSecurity.CanEdit(file, FileConstant.ShareLinkId)) return FileShare.ReadWrite;
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if (filesSecurity.CanReview(file, FileConstant.ShareLinkId)) return FileShare.Review;
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if (filesSecurity.CanFillForms(file, FileConstant.ShareLinkId)) return FileShare.FillForms;
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if (filesSecurity.CanComment(file, FileConstant.ShareLinkId)) return FileShare.Comment;
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if (filesSecurity.CanRead(file, FileConstant.ShareLinkId)) return FileShare.Read;
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return FileShare.Restrict;
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}
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}
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public static class FileShareLinkExtension
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{
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public static DIHelper AddFileShareLinkService(this DIHelper services)
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{
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services.TryAddScoped<FileShareLink>();
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return services
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.AddFilesLinkUtilityService()
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.AddFileUtilityService()
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.AddBaseCommonLinkUtilityService()
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.AddGlobalService()
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.AddFileSecurityService();
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}
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}
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} |