From 60823f21a618760fa82ac72ac6c6c4e2974d4e4d Mon Sep 17 00:00:00 2001
From: Sergey Matveev <stargrave@stargrave.org>
Date: Thu, 13 Apr 2023 22:09:44 +0300
Subject: [PATCH] Streebog hash in .meta4 support

---
 handler.go      |  8 ++++++++
 meta4/parse.go  | 12 +++++++++---
 meta4/scheme.go | 10 ++++++----
 3 files changed, 23 insertions(+), 7 deletions(-)

diff --git a/handler.go b/handler.go
index 75c98d5..e17583c 100644
--- a/handler.go
+++ b/handler.go
@@ -278,6 +278,14 @@ IndexLookuped:
 			w.Header().Add("Digest", "SHA-512="+
 				base64.StdEncoding.EncodeToString(forHTTP.SHA512))
 		}
+		if forHTTP.Streebog256 != nil {
+			w.Header().Add("Digest", "Streebog-256="+
+				base64.StdEncoding.EncodeToString(forHTTP.Streebog256))
+		}
+		if forHTTP.Streebog512 != nil {
+			w.Header().Add("Digest", "Streebog-512="+
+				base64.StdEncoding.EncodeToString(forHTTP.Streebog512))
+		}
 	}
 SkipMeta4:
 
diff --git a/meta4/parse.go b/meta4/parse.go
index bc83945..c816434 100644
--- a/meta4/parse.go
+++ b/meta4/parse.go
@@ -23,9 +23,11 @@ import (
 )
 
 type ForHTTP struct {
-	SHA256 []byte
-	SHA512 []byte
-	URLs   []string
+	SHA256      []byte
+	SHA512      []byte
+	Streebog256 []byte
+	Streebog512 []byte
+	URLs        []string
 }
 
 func Parse(fn string, data []byte) (*ForHTTP, error) {
@@ -49,6 +51,10 @@ func Parse(fn string, data []byte) (*ForHTTP, error) {
 				forHTTP.SHA256 = digest
 			case HashSHA512:
 				forHTTP.SHA512 = digest
+			case HashStreebog256:
+				forHTTP.Streebog256 = digest
+			case HashStreebog512:
+				forHTTP.Streebog512 = digest
 			}
 		}
 		for _, u := range f.URLs {
diff --git a/meta4/scheme.go b/meta4/scheme.go
index 6bf4033..681bf4a 100644
--- a/meta4/scheme.go
+++ b/meta4/scheme.go
@@ -23,10 +23,12 @@ import (
 )
 
 const (
-	HashSHA256 = "sha-256"
-	HashSHA512 = "sha-512"
-	Ext        = ".meta4"
-	MaxSize    = 1 << 16
+	HashSHA256      = "sha-256"
+	HashSHA512      = "sha-512"
+	HashStreebog256 = "streebog-256"
+	HashStreebog512 = "streebog-512"
+	Ext             = ".meta4"
+	MaxSize         = 1 << 16
 )
 
 type Metalink struct {
-- 
2.44.0