/Repository/Hashing.cs |
@@ -0,0 +1,108 @@ |
/////////////////////////////////////////////////////////////////////////// |
// Copyright (C) Wizardry and Steamworks 2016 - License: GNU GPLv3 // |
// Please see: http://www.gnu.org/licenses/gpl.html for legal details, // |
// rights of fair usage, the disclaimer and warranty conditions. // |
/////////////////////////////////////////////////////////////////////////// |
|
using System.IO; |
using System.Linq; |
using System.Net; |
using System.Security.Cryptography; |
using System.Threading.Tasks; |
using wasDAVClient; |
using wasSharp; |
using wasSharpNET.IO.Utilities; |
|
namespace wasStitchNET.Repository |
{ |
public class Hashing |
{ |
/// <summary> |
/// Hash local files inside a directory. |
/// </summary> |
/// <param name="path">the path to a directory to hash</param> |
/// <param name="bufferSize">the partial hash buffer (default: 16384)</param> |
/// <returns>a SHA1 hash of all files in a directory ordered by name</returns> |
public static async Task<string> HashLocalFiles(string path, int bufferSize = 16384) |
{ |
return await new Task<string>(() => |
{ |
using (var sha1managed = new SHA1Managed()) |
{ |
foreach (var stream in Directory |
.GetFiles(path, "*.*", SearchOption.AllDirectories) |
.OrderBy(o => o.Split(Path.DirectorySeparatorChar).Last()) |
.AsParallel() |
.AsOrdered() |
.Select(file => IOExtensions.GetWriteStream(file, FileMode.Open, |
FileAccess.Read, FileShare.Read, STITCH_CONSTANTS.LOCAL_FILE_ACCESS_TIMEOUT)) |
.AsSequential()) |
using (var binaryReader = new BinaryReader(stream)) |
{ |
var buff = new byte[bufferSize]; |
int read; |
while ((read = binaryReader.Read(buff, 0, buff.Length)) != 0) |
sha1managed.TransformBlock(buff, 0, read, null, 0); |
} |
|
sha1managed.TransformFinalBlock(new byte[] { }, 0, 0); |
return sha1managed.Hash.ToHexString(); |
} |
}); |
} |
|
/// <summary> |
/// Hash the files of a Stitch remote repository release. |
/// </summary> |
/// <param name="server">the server to hash the release for</param> |
/// <param name="update">the Stitch release to hash</param> |
/// <param name="timeout">the timeout in milliseconds to allow the server to respond</param> |
/// <returns>a SHA1 hash of all files in the release directory ordered by name</returns> |
public static async Task<string> HashRemoteFiles(string server, string update, int timeout) |
{ |
using (var client = new Client(new NetworkCredential()) |
{ |
Timeout = timeout, |
UserAgent = STITCH_CONSTANTS.USER_AGENT.Product.Name, |
UserAgentVersion = STITCH_CONSTANTS.USER_AGENT.Product.Version, |
Server = server, |
BasePath = string.Join(@"/", STITCH_CONSTANTS.UPDATE_PATH, |
STITCH_CONSTANTS.PROGRESSIVE_PATH) |
}) |
{ |
return $"{await HashRemoteFiles(client, string.Join(@"/", update, STITCH_CONSTANTS.UPDATE_DATA_PATH))}"; |
} |
} |
|
/// <summary> |
/// Hash the files of a Stitch remote repository release using an existing was DAV client. |
/// </summary> |
/// <param name="client">the was DAV client to use</param> |
/// <param name="path">the path to the repository release folder</param> |
/// <param name="bufferSize">the partial hash buffer (default: 16384)</param> |
/// <returns>a SHA1 hash of all files in the release directory ordered by name</returns> |
public static async Task<string> HashRemoteFiles(Client client, string path, int bufferSize = 16384) |
{ |
using (var sha1managed = new SHA1Managed()) |
{ |
foreach (var stream in (await client.List(path, Constants.DavDepth.ALL)) |
.OrderBy(o => o.DisplayName) |
.Where(item => !item.IsCollection) |
.AsParallel() |
.AsOrdered() |
.Select(file => client.Download(file.Href)) |
.AsSequential()) |
using (var binaryReader = new BinaryReader(await stream)) |
{ |
var buff = new byte[bufferSize]; |
int read; |
while ((read = binaryReader.Read(buff, 0, buff.Length)) != 0) |
sha1managed.TransformBlock(buff, 0, read, null, 0); |
} |
|
sha1managed.TransformFinalBlock(new byte[] { }, 0, 0); |
return sha1managed.Hash.ToHexString(); |
} |
} |
} |
} |