97 lines
2.9 KiB
Go
97 lines
2.9 KiB
Go
package netproto
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import (
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"encoding/base64"
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)
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type MainHeader struct {
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Version uint8 `json:"version"`
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Meta map[string]string `json:"meta"`
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ExtensionHeaders []ExtensionHeader `json:"extension_headers"`
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}
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const (
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MainHeaderVersion1 = 1
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)
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const (
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ExtensionHeaderType_Source uint8 = 1 /* https://git.send.nrw/sendnrw/sendnrwlib/issues/1 */
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ExtensionHeaderType_Destination uint8 = 2 /* https://git.send.nrw/sendnrw/sendnrwlib/issues/1 */
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ExtensionHeaderType_PayloadDefinition uint8 = 3
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ExtensionHeaderType_Protocol uint8 = 4
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ExtensionHeaderType_Control uint8 = 5 /*Steuerbefehle wie Download, Upload, ...*/
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ExtensionHeaderType_Crypto uint8 = 6 /*Hinweis auf eine Verschlüsselung*/
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ExtensionHeaderType_Validation uint8 = 7 /*Hinweis auf eine Validierung oder Checksum*/
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ExtensionHeaderType_Routing uint8 = 8 /*Hinweis auf eine Routing-Information*/
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)
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func GenerateEHT1(IPv4, IPv6, Port string) ExtensionHeader {
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return ExtensionHeader{
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Type: ExtensionHeaderType_Source,
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Meta: map[string]string{"version": "1.0"},
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Data: map[string]string{"ipv4": IPv4, "ipv6": IPv6, "port": Port},
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}
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}
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func GenerateEHT2(IPv4, IPv6, Port string) ExtensionHeader {
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return ExtensionHeader{
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Type: ExtensionHeaderType_Destination,
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Meta: map[string]string{"version": "1.0"},
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Data: map[string]string{"ipv4": IPv4, "ipv6": IPv6, "port": Port},
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}
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}
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func GenerateEHT3(PayloadMime, PayloadLength, PayloadChecksum string) ExtensionHeader {
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return ExtensionHeader{
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Type: ExtensionHeaderType_PayloadDefinition,
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Meta: map[string]string{"version": "1.0"},
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Data: map[string]string{"payloadmime": PayloadMime, "payloadlength": PayloadLength, "payloadchecksum": PayloadChecksum},
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}
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}
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func GenerateEHT4(ProtocolName, ProtocolVersion, ProtocolOID string) ExtensionHeader {
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return ExtensionHeader{
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Type: ExtensionHeaderType_Protocol,
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Meta: map[string]string{"version": "1.0"},
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Data: map[string]string{"protocolname": ProtocolName, "protocolversion": ProtocolVersion, "protocoloid": ProtocolOID},
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}
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}
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func GenerateEHT7(Checksum string) ExtensionHeader {
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return ExtensionHeader{
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Type: ExtensionHeaderType_Validation,
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Meta: map[string]string{"version": "1.0"},
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Data: map[string]string{"checksum": Checksum},
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}
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}
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func GenerateMH(Version uint8, Flag string) MainHeader {
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return MainHeader{
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Version: Version,
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Meta: map[string]string{"version": "1.0", "flag": Flag},
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}
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}
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func EncodeB64(input string) (string, error) {
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return base64.StdEncoding.EncodeToString([]byte(input)), nil
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}
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func DecodeB64(input string) (string, error) {
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d, err := base64.StdEncoding.DecodeString(input)
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if err != nil {
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return "", err
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}
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return string(d), nil
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}
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type ExtensionHeader struct {
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Type uint8 `json:"type"`
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Meta map[string]string `json:"meta"`
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Data map[string]string `json:"data"`
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}
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type NetworkProtocol struct {
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Header MainHeader `json:"header"`
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Payload string `json:"payload"`
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}
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