| package hci |
| |
| import ( |
| "bytes" |
| "encoding/binary" |
| "fmt" |
| ) |
| |
| const ( |
| pairingRequest = 0x01 // Pairing Request LE-U, ACL-U |
| pairingResponse = 0x02 // Pairing Response LE-U, ACL-U |
| pairingConfirm = 0x03 // Pairing Confirm LE-U |
| pairingRandom = 0x04 // Pairing Random LE-U |
| pairingFailed = 0x05 // Pairing Failed LE-U, ACL-U |
| encryptionInformation = 0x06 // Encryption Information LE-U |
| masterIdentification = 0x07 // Master Identification LE-U |
| identiInformation = 0x08 // Identity Information LE-U, ACL-U |
| identityAddreInformation = 0x09 // Identity Address Information LE-U, ACL-U |
| signingInformation = 0x0A // Signing Information LE-U, ACL-U |
| securityRequest = 0x0B // Security Request LE-U |
| pairingPublicKey = 0x0C // Pairing Public Key LE-U |
| pairingDHKeyCheck = 0x0D // Pairing DHKey Check LE-U |
| pairingKeypress = 0x0E // Pairing Keypress Notification LE-U |
| ) |
| |
| func (c *Conn) sendSMP(p pdu) error { |
| buf := bytes.NewBuffer(make([]byte, 0)) |
| if err := binary.Write(buf, binary.LittleEndian, uint16(4+len(p))); err != nil { |
| return err |
| } |
| if err := binary.Write(buf, binary.LittleEndian, cidSMP); err != nil { |
| return err |
| } |
| if err := binary.Write(buf, binary.LittleEndian, p); err != nil { |
| return err |
| } |
| _, err := c.writePDU(buf.Bytes()) |
| logger.Debug("smp", "send", fmt.Sprintf("[%X]", buf.Bytes())) |
| return err |
| } |
| |
| func (c *Conn) handleSMP(p pdu) error { |
| logger.Debug("smp", "recv", fmt.Sprintf("[%X]", p)) |
| code := p[0] |
| switch code { |
| case pairingRequest: |
| case pairingResponse: |
| case pairingConfirm: |
| case pairingRandom: |
| case pairingFailed: |
| case encryptionInformation: |
| case masterIdentification: |
| case identiInformation: |
| case identityAddreInformation: |
| case signingInformation: |
| case securityRequest: |
| case pairingPublicKey: |
| case pairingDHKeyCheck: |
| case pairingKeypress: |
| default: |
| // If a packet is received with a reserved Code it shall be ignored. [Vol 3, Part H, 3.3] |
| return nil |
| } |
| // FIXME: work aound to the lack of SMP implementation - always return non-supported. |
| // C.5.1 Pairing Not Supported by Slave |
| return c.sendSMP([]byte{pairingFailed, 0x05}) |
| } |
