83 lines
2.5 KiB
C#
83 lines
2.5 KiB
C#
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using System.Security.Cryptography;
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using Flurl;
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using Flurl.Http;
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using InnovEnergy.Lib.Utils;
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using static System.Text.Encoding;
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using Convert = System.Convert;
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namespace InnovEnergy.S3.Drivers;
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public record S3Config
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{
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public String Bucket { get; init; } = "";
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public String Region { get; init; } = "";
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public String Provider { get; init; } = "";
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public String Key { get; init; } = "";
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public String Secret { get; init; } = "";
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public String ContentType { get; init; } = "";
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public String Host => $"{Bucket}.{Region}.{Provider}";
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public String Url => $"https://{Host}";
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public IFlurlRequest CreatePutRequest(String s3Path) => CreateRequest("PUT", s3Path);
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public IFlurlRequest CreateGetRequest(String s3Path) => CreateRequest("GET", s3Path);
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private IFlurlRequest CreateRequest(String method, String s3Path)
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{
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var date = DateTime.UtcNow.ToString("r");
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var auth = CreateAuthorization(method, s3Path, date);
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return Url
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.AppendPathSegment(s3Path)
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.WithHeader("Host", Host)
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.WithHeader("Date", date)
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.WithHeader("Authorization", auth)
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.AllowAnyHttpStatus();
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}
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private String CreateAuthorization(String method,
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String s3Path,
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String date)
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{
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return CreateAuthorization
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(
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method : method,
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bucket : Bucket,
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s3Path : s3Path,
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date : date,
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s3Key : Key,
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s3Secret : Secret,
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contentType: ContentType
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);
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}
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private static String CreateAuthorization(String method,
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String bucket,
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String s3Path,
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String date,
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String s3Key,
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String s3Secret,
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String contentType = "",
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String md5Hash = "")
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{
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// StringToSign = HTTP-Verb + "\n" +
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// Content-MD5 + "\n" +
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// Content-Type + "\n" +
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// Date + "\n" +
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// CanonicalizedAmzHeaders +
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// CanonicalizedResource;
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var payload = $"{method}\n{md5Hash}\n{contentType}\n{date}\n/{bucket.Trim('/')}/{s3Path.Trim('/')}";
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using var hmacSha1 = new HMACSHA1(UTF8.GetBytes(s3Secret));
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var signature = UTF8
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.GetBytes(payload)
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.Apply(hmacSha1.ComputeHash)
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.Apply(Convert.ToBase64String);
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return $"AWS {s3Key}:{signature}";
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}
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}
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