76 lines
4.1 KiB
Go
76 lines
4.1 KiB
Go
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package ble
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import (
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"errors"
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"fmt"
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)
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// ErrEIRPacketTooLong is the error returned when an AdvertisingPacket
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// or ScanResponsePacket is too long.
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var ErrEIRPacketTooLong = errors.New("max packet length is 31")
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// ErrNotImplemented means the functionality is not implemented.
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var ErrNotImplemented = errors.New("not implemented")
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// ATTError is the error code of Attribute Protocol [Vol 3, Part F, 3.4.1.1].
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type ATTError byte
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// ATTError is the error code of Attribute Protocol [Vol 3, Part F, 3.4.1.1].
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const (
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ErrSuccess ATTError = 0x00 // ErrSuccess measn the operation is success.
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ErrInvalidHandle ATTError = 0x01 // ErrInvalidHandle means the attribute handle given was not valid on this server.
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ErrReadNotPerm ATTError = 0x02 // ErrReadNotPerm eans the attribute cannot be read.
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ErrWriteNotPerm ATTError = 0x03 // ErrWriteNotPerm eans the attribute cannot be written.
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ErrInvalidPDU ATTError = 0x04 // ErrInvalidPDU means the attribute PDU was invalid.
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ErrAuthentication ATTError = 0x05 // ErrAuthentication means the attribute requires authentication before it can be read or written.
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ErrReqNotSupp ATTError = 0x06 // ErrReqNotSupp means the attribute server does not support the request received from the client.
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ErrInvalidOffset ATTError = 0x07 // ErrInvalidOffset means the specified was past the end of the attribute.
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ErrAuthorization ATTError = 0x08 // ErrAuthorization means the attribute requires authorization before it can be read or written.
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ErrPrepQueueFull ATTError = 0x09 // ErrPrepQueueFull means too many prepare writes have been queued.
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ErrAttrNotFound ATTError = 0x0a // ErrAttrNotFound means no attribute found within the given attribute handle range.
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ErrAttrNotLong ATTError = 0x0b // ErrAttrNotLong means the attribute cannot be read or written using the Read Blob Request.
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ErrInsuffEncrKeySize ATTError = 0x0c // ErrInsuffEncrKeySize means the Encryption Key Size used for encrypting this link is insufficient.
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ErrInvalAttrValueLen ATTError = 0x0d // ErrInvalAttrValueLen means the attribute value length is invalid for the operation.
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ErrUnlikely ATTError = 0x0e // ErrUnlikely means the attribute request that was requested has encountered an error that was unlikely, and therefore could not be completed as requested.
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ErrInsuffEnc ATTError = 0x0f // ErrInsuffEnc means the attribute requires encryption before it can be read or written.
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ErrUnsuppGrpType ATTError = 0x10 // ErrUnsuppGrpType means the attribute type is not a supported grouping attribute as defined by a higher layer specification.
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ErrInsuffResources ATTError = 0x11 // ErrInsuffResources means insufficient resources to complete the request.
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)
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func (e ATTError) Error() string {
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switch i := int(e); {
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case i < 0x11:
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return errName[e]
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case i >= 0x12 && i <= 0x7F: // Reserved for future use.
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return fmt.Sprintf("reserved error code (0x%02X)", i)
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case i >= 0x80 && i <= 0x9F: // Application error, defined by higher level.
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return fmt.Sprintf("application error code (0x%02X)", i)
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case i >= 0xA0 && i <= 0xDF: // Reserved for future use.
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return fmt.Sprintf("reserved error code (0x%02X)", i)
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case i >= 0xE0 && i <= 0xFF: // Common profile and service error codes.
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return "profile or service error"
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}
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return "unknown error"
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}
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var errName = map[ATTError]string{
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ErrSuccess: "success",
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ErrInvalidHandle: "invalid handle",
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ErrReadNotPerm: "read not permitted",
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ErrWriteNotPerm: "write not permitted",
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ErrInvalidPDU: "invalid PDU",
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ErrAuthentication: "insufficient authentication",
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ErrReqNotSupp: "request not supported",
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ErrInvalidOffset: "invalid offset",
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ErrAuthorization: "insufficient authorization",
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ErrPrepQueueFull: "prepare queue full",
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ErrAttrNotFound: "attribute not found",
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ErrAttrNotLong: "attribute not long",
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ErrInsuffEncrKeySize: "insufficient encryption key size",
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ErrInvalAttrValueLen: "invalid attribute value length",
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ErrUnlikely: "unlikely error",
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ErrInsuffEnc: "insufficient encryption",
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ErrUnsuppGrpType: "unsupported group type",
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ErrInsuffResources: "insufficient resources",
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}
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