refactor

su3/su3.go

@@ -0,0 +1,70 @@
+package su3
+
+type Su3 struct {
+	// 0-5 Magic number "I2Psu3"
+	Magic [6]byte
+
+	// 6   unused = 0
+	Unused1 [1]byte
+
+	// 7   su3 file format version = 0
+	Format [1]byte
+
+	// 8-9 Signature type
+	// 0x0000 = DSA-160
+	// 0x0001 = ECDSA-SHA256-P256
+	// 0x0002 = ECDSA-SHA384-P384
+	// 0x0003 = ECDSA-SHA512-P521
+	// 0x0004 = RSA-SHA256-2048
+	// 0x0005 = RSA-SHA384-3072
+	// 0x0006 = RSA-SHA512-4096
+	SignatureType [2]byte
+
+	// 10-11   Signature length, e.g. 40 (0x0028) for DSA-160
+	SignatureLength [2]byte
+
+	// 12  unused
+	Unused2 [1]byte
+
+	// 13  Version length (in bytes not chars, including padding) must be at least 16 (0x10) for compatibility
+	VersionLength [1]byte
+
+	// 14  unused
+	Unused3 [1]byte
+
+	// 15  Signer ID length (in bytes not chars)
+	SignerIdLength [1]byte
+
+	// 16-23   Content length (not including header or sig)
+	ContentLength [8]byte
+
+	// 24  unused
+	Unused4 [1]byte
+
+	// 25  File type
+	// 0x00 = zip file
+	// 0x01 = xml file (as of 0.9.15)
+	// 0x02 = html file (as of 0.9.17)
+	// 0x03 = xml.gz file (as of 0.9.17)
+	FileType [1]byte
+
+	// 26  unused
+	Unused5 [1]byte
+
+	// 27  Content type
+	// 0x00 = unknown
+	// 0x01 = router update
+	// 0x02 = plugin or plugin update
+	// 0x03 = reseed data
+	// 0x04 = news feed (as of 0.9.15)
+	ContentType [1]byte
+
+	// 28-39   unused
+	Unused6 [12]byte
+
+	// 40-55+  Version, UTF-8 padded with trailing 0x00, 16 bytes minimum, length specified at byte 13. Do not append 0x00 bytes if the length is 16 or more.
+	// xx+ ID of signer, (e.g. "zzz@mail.i2p") UTF-8, not padded, length specified at byte 15
+	// xx+ Content, length and format specified in header
+	// xx+ Signature, length specified in header, covers everything starting at byte 0
+	Version [16]byte
+}