#region License Information (GPL v3)
/*
ShareX - A program that allows you to take screenshots and share any file type
Copyright (c) 2007-2021 ShareX Team
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Optionally you can also view the license at .
*/
#endregion License Information (GPL v3)
using ShareX.HelpersLib;
using ShareX.UploadersLib.Properties;
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Drawing;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Windows.Forms;
namespace ShareX.UploadersLib.FileUploaders
{
public enum AmazonS3StorageClass // Localized
{
STANDARD,
STANDARD_IA,
ONEZONE_IA,
INTELLIGENT_TIERING,
//GLACIER,
//DEEP_ARCHIVE
}
public class AmazonS3NewFileUploaderService : FileUploaderService
{
public override FileDestination EnumValue { get; } = FileDestination.AmazonS3;
public override Icon ServiceIcon => Resources.AmazonS3;
public override bool CheckConfig(UploadersConfig config)
{
return config.AmazonS3Settings != null && !string.IsNullOrEmpty(config.AmazonS3Settings.AccessKeyID) &&
!string.IsNullOrEmpty(config.AmazonS3Settings.SecretAccessKey) && !string.IsNullOrEmpty(config.AmazonS3Settings.Endpoint) &&
!string.IsNullOrEmpty(config.AmazonS3Settings.Bucket);
}
public override GenericUploader CreateUploader(UploadersConfig config, TaskReferenceHelper taskInfo)
{
return new AmazonS3(config.AmazonS3Settings);
}
public override TabPage GetUploadersConfigTabPage(UploadersConfigForm form) => form.tpAmazonS3;
}
public sealed class AmazonS3 : FileUploader
{
private const string DefaultRegion = "us-east-1";
// http://docs.aws.amazon.com/general/latest/gr/rande.html#s3_region
public static List Endpoints { get; } = new List()
{
new AmazonS3Endpoint("Asia Pacific (Hong Kong)", "s3.ap-east-1.amazonaws.com", "ap-east-1"),
new AmazonS3Endpoint("Asia Pacific (Mumbai)", "s3.ap-south-1.amazonaws.com", "ap-south-1"),
new AmazonS3Endpoint("Asia Pacific (Seoul)", "s3.ap-northeast-2.amazonaws.com", "ap-northeast-2"),
new AmazonS3Endpoint("Asia Pacific (Singapore)", "s3.ap-southeast-1.amazonaws.com", "ap-southeast-1"),
new AmazonS3Endpoint("Asia Pacific (Sydney)", "s3.ap-southeast-2.amazonaws.com", "ap-southeast-2"),
new AmazonS3Endpoint("Asia Pacific (Tokyo)", "s3.ap-northeast-1.amazonaws.com", "ap-northeast-1"),
new AmazonS3Endpoint("Canada (Central)", "s3.ca-central-1.amazonaws.com", "ca-central-1"),
new AmazonS3Endpoint("China (Beijing)", "s3.cn-north-1.amazonaws.com.cn", "cn-north-1"),
new AmazonS3Endpoint("China (Ningxia)", "s3.cn-northwest-1.amazonaws.com.cn", "cn-northwest-1"),
new AmazonS3Endpoint("EU (Frankfurt)", "s3.eu-central-1.amazonaws.com", "eu-central-1"),
new AmazonS3Endpoint("EU (Ireland)", "s3.eu-west-1.amazonaws.com", "eu-west-1"),
new AmazonS3Endpoint("EU (London)", "s3.eu-west-2.amazonaws.com", "eu-west-2"),
new AmazonS3Endpoint("EU (Paris)", "s3.eu-west-3.amazonaws.com", "eu-west-3"),
new AmazonS3Endpoint("EU (Stockholm)", "s3.eu-north-1.amazonaws.com", "eu-north-1"),
new AmazonS3Endpoint("Middle East (Bahrain)", "s3.me-south-1.amazonaws.com", "me-south-1"),
new AmazonS3Endpoint("South America (São Paulo)", "s3.sa-east-1.amazonaws.com", "sa-east-1"),
new AmazonS3Endpoint("US East (N. Virginia)", "s3.amazonaws.com", "us-east-1"),
new AmazonS3Endpoint("US East (Ohio)", "s3.us-east-2.amazonaws.com", "us-east-2"),
new AmazonS3Endpoint("US West (N. California)", "s3.us-west-1.amazonaws.com", "us-west-1"),
new AmazonS3Endpoint("US West (Oregon)", "s3.us-west-2.amazonaws.com", "us-west-2"),
new AmazonS3Endpoint("DreamObjects", "objects-us-east-1.dream.io"),
new AmazonS3Endpoint("DigitalOcean (Amsterdam)", "ams3.digitaloceanspaces.com", "ams3"),
new AmazonS3Endpoint("DigitalOcean (New York)", "nyc3.digitaloceanspaces.com", "nyc3"),
new AmazonS3Endpoint("DigitalOcean (San Francisco)", "sfo2.digitaloceanspaces.com", "sfo2"),
new AmazonS3Endpoint("DigitalOcean (Singapore)", "sgp1.digitaloceanspaces.com", "sgp1"),
new AmazonS3Endpoint("Wasabi", "s3.wasabisys.com")
};
private AmazonS3Settings Settings { get; set; }
public AmazonS3(AmazonS3Settings settings)
{
Settings = settings;
}
public override UploadResult Upload(Stream stream, string fileName)
{
bool isPathStyleRequest = Settings.UsePathStyle;
if (!isPathStyleRequest && Settings.Bucket.Contains("."))
{
isPathStyleRequest = true;
}
string endpoint = URLHelpers.RemovePrefixes(Settings.Endpoint);
string host = isPathStyleRequest ? endpoint : $"{Settings.Bucket}.{endpoint}";
string algorithm = "AWS4-HMAC-SHA256";
string credentialDate = DateTime.UtcNow.ToString("yyyyMMdd", CultureInfo.InvariantCulture);
string region = GetRegion();
string scope = URLHelpers.CombineURL(credentialDate, region, "s3", "aws4_request");
string credential = URLHelpers.CombineURL(Settings.AccessKeyID, scope);
string timeStamp = DateTime.UtcNow.ToString("yyyyMMddTHHmmssZ", CultureInfo.InvariantCulture);
string contentType = RequestHelpers.GetMimeType(fileName);
string hashedPayload;
if (Settings.SignedPayload)
{
hashedPayload = Helpers.BytesToHex(Helpers.ComputeSHA256(stream));
}
else
{
hashedPayload = "UNSIGNED-PAYLOAD";
}
string uploadPath = GetUploadPath(fileName);
string resultURL = GenerateURL(uploadPath);
OnEarlyURLCopyRequested(resultURL);
NameValueCollection headers = new NameValueCollection
{
["Host"] = host,
["Content-Length"] = stream.Length.ToString(),
["Content-Type"] = contentType,
["x-amz-date"] = timeStamp,
["x-amz-content-sha256"] = hashedPayload,
// If you don't specify, S3 Standard is the default storage class. Amazon S3 supports other storage classes.
// Valid Values: STANDARD | REDUCED_REDUNDANCY | STANDARD_IA | ONEZONE_IA | INTELLIGENT_TIERING | GLACIER | DEEP_ARCHIVE
// https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutObject.html
["x-amz-storage-class"] = Settings.StorageClass.ToString()
};
if (Settings.SetPublicACL)
{
// The canned ACL to apply to the object. For more information, see Canned ACL.
// https://docs.aws.amazon.com/AmazonS3/latest/dev/acl-overview.html#canned-acl
headers["x-amz-acl"] = "public-read";
}
string canonicalURI = uploadPath;
if (isPathStyleRequest) canonicalURI = URLHelpers.CombineURL(Settings.Bucket, canonicalURI);
canonicalURI = URLHelpers.AddSlash(canonicalURI, SlashType.Prefix);
canonicalURI = URLHelpers.URLEncode(canonicalURI, true);
string canonicalQueryString = "";
string canonicalHeaders = CreateCanonicalHeaders(headers);
string signedHeaders = GetSignedHeaders(headers);
string canonicalRequest = "PUT" + "\n" +
canonicalURI + "\n" +
canonicalQueryString + "\n" +
canonicalHeaders + "\n" +
signedHeaders + "\n" +
hashedPayload;
string stringToSign = algorithm + "\n" +
timeStamp + "\n" +
scope + "\n" +
Helpers.BytesToHex(Helpers.ComputeSHA256(canonicalRequest));
byte[] dateKey = Helpers.ComputeHMACSHA256(credentialDate, "AWS4" + Settings.SecretAccessKey);
byte[] dateRegionKey = Helpers.ComputeHMACSHA256(region, dateKey);
byte[] dateRegionServiceKey = Helpers.ComputeHMACSHA256("s3", dateRegionKey);
byte[] signingKey = Helpers.ComputeHMACSHA256("aws4_request", dateRegionServiceKey);
string signature = Helpers.BytesToHex(Helpers.ComputeHMACSHA256(stringToSign, signingKey));
headers["Authorization"] = algorithm + " " +
"Credential=" + credential + "," +
"SignedHeaders=" + signedHeaders + "," +
"Signature=" + signature;
headers.Remove("Host");
headers.Remove("Content-Type");
string url = URLHelpers.CombineURL(host, canonicalURI);
url = URLHelpers.ForcePrefix(url, "https://");
SendRequest(HttpMethod.PUT, url, stream, contentType, null, headers);
if (LastResponseInfo != null && LastResponseInfo.IsSuccess)
{
return new UploadResult
{
IsSuccess = true,
URL = resultURL
};
}
Errors.Add("Upload to Amazon S3 failed.");
return null;
}
private string GetRegion()
{
if (!string.IsNullOrEmpty(Settings.Region))
{
return Settings.Region;
}
string url = Settings.Endpoint;
int delimIndex = url.IndexOf("//", StringComparison.Ordinal);
if (delimIndex >= 0)
{
url = url.Substring(delimIndex + 2);
}
if (url.EndsWith("/", StringComparison.Ordinal))
{
url = url.Substring(0, url.Length - 1);
}
int awsIndex = url.IndexOf(".amazonaws.com", StringComparison.Ordinal);
if (awsIndex < 0)
{
return DefaultRegion;
}
string serviceAndRegion = url.Substring(0, awsIndex);
if (serviceAndRegion.StartsWith("s3-", StringComparison.Ordinal))
{
serviceAndRegion = "s3." + serviceAndRegion.Substring(3);
}
int separatorIndex = serviceAndRegion.LastIndexOf('.');
if (separatorIndex == -1)
{
return DefaultRegion;
}
return serviceAndRegion.Substring(separatorIndex + 1);
}
private string GetUploadPath(string fileName)
{
string path = NameParser.Parse(NameParserType.FolderPath, Settings.ObjectPrefix.Trim('/'));
if ((Settings.RemoveExtensionImage && Helpers.IsImageFile(fileName)) ||
(Settings.RemoveExtensionText && Helpers.IsTextFile(fileName)) ||
(Settings.RemoveExtensionVideo && Helpers.IsVideoFile(fileName)))
{
fileName = Path.GetFileNameWithoutExtension(fileName);
}
return URLHelpers.CombineURL(path, fileName);
}
public string GenerateURL(string uploadPath)
{
if (!string.IsNullOrEmpty(Settings.Endpoint) && !string.IsNullOrEmpty(Settings.Bucket))
{
uploadPath = URLHelpers.URLEncode(uploadPath, true, HelpersOptions.URLEncodeIgnoreEmoji);
string url;
if (Settings.UseCustomCNAME && !string.IsNullOrEmpty(Settings.CustomDomain))
{
CustomUploaderParser parser = new CustomUploaderParser();
string parsedDomain = parser.Parse(Settings.CustomDomain);
url = URLHelpers.CombineURL(parsedDomain, uploadPath);
}
else
{
url = URLHelpers.CombineURL(Settings.Endpoint, Settings.Bucket, uploadPath);
}
return URLHelpers.FixPrefix(url, "https://");
}
return "";
}
public string GetPreviewURL()
{
string uploadPath = GetUploadPath("example.png");
return GenerateURL(uploadPath);
}
private string CreateCanonicalHeaders(NameValueCollection headers)
{
return headers.AllKeys.OrderBy(key => key).Select(key => key.ToLowerInvariant() + ":" + headers[key].Trim() + "\n").
Aggregate((result, next) => result + next);
}
private string GetSignedHeaders(NameValueCollection headers)
{
return string.Join(";", headers.AllKeys.OrderBy(key => key).Select(key => key.ToLowerInvariant()));
}
}
}