oracle

var (
	// ErrEmptyUsername indicates an AUTH message with no username.
	ErrEmptyUsername = errors.New("empty username in AUTH message")
	// ErrNoActiveGrant indicates no active grant exists for the user/database pair.
	ErrNoActiveGrant = errors.New("no active grant for this user/database")
	// ErrQueryLimitExceed indicates the grant's query count quota has been reached.
	ErrQueryLimitExceed = errors.New("query limit exceeded")
	// ErrDataLimitExceed indicates the grant's data transfer quota has been reached.
	ErrDataLimitExceed = errors.New("data transfer limit exceeded")
	// ErrDatabaseNotFound indicates the requested database was not found in the store.
	ErrDatabaseNotFound = errors.New("database not found")
	// ErrUserNotFound indicates the requested user was not found in the store.
	ErrUserNotFound = errors.New("user not found")

	// ErrTTCPayloadTooShort indicates a TTC payload is shorter than expected.
	ErrTTCPayloadTooShort = errors.New("TTC payload too short")
	// ErrNotDataPacket indicates a non-Data TNS packet was received where Data was expected.
	ErrNotDataPacket = errors.New("expected TNS Data packet")
	// ErrAuthFailed indicates upstream authentication did not succeed.
	ErrAuthFailed = errors.New("upstream authentication failed")

	// ErrExpectedConnectPacket indicates a non-Connect packet was received at session start.
	ErrExpectedConnectPacket = errors.New("expected TNS Connect packet")
	// ErrNoServiceName indicates the connect descriptor lacks a SERVICE_NAME.
	ErrNoServiceName = errors.New("no SERVICE_NAME in connect descriptor")
	// ErrUpstreamRefused indicates the upstream Oracle server refused the connection.
	ErrUpstreamRefused = errors.New("upstream refused connection")
	// ErrClientAuthFailed indicates client authentication to dbbat failed.
	ErrClientAuthFailed = errors.New("client authentication failed")
	// ErrNoO5LogonVerifier indicates no API key with O5LOGON verifier was found.
	ErrNoO5LogonVerifier = errors.New("no API key with O5LOGON verifier found")
	// ErrAPIKeyOwnerMismatch indicates the API key does not belong to the authenticated user.
	ErrAPIKeyOwnerMismatchOracle = errors.New("API key does not belong to user")

	// ErrColumnDefTooShort indicates a column definition is shorter than expected.
	ErrColumnDefTooShort = errors.New("column definition too short")
	// ErrColumnNameTruncated indicates a column name extends beyond the payload.
	ErrColumnNameTruncated = errors.New("column name exceeds payload")
	// ErrNoTypeCode indicates a column definition is missing the type code byte.
	ErrNoTypeCode = errors.New("column definition missing type code")
	// ErrEmptyRowData indicates an empty row data payload.
	ErrEmptyRowData = errors.New("empty row data")
	// ErrRowValueTruncated indicates a row value extends beyond the payload.
	ErrRowValueTruncated = errors.New("row value exceeds payload")
	// ErrInvalidFloatLength indicates float data has an unexpected length.
	ErrInvalidFloatLength = errors.New("invalid float data length")

	// O5LOGON and TTC auth errors.
	ErrDecryptedPasswordTooShort = errors.New("decrypted password too short")
	ErrCiphertextNotAligned      = errors.New("ciphertext is not a multiple of block size")
	ErrInvalidPadding            = errors.New("invalid PKCS7 padding")
	ErrAuthPhase1TooShort        = errors.New("AUTH Phase 1 payload too short")
	ErrAuthPhase1NoData          = errors.New("AUTH Phase 1: no data after sub-op")
	ErrAuthPhase1BadUsername     = errors.New("AUTH Phase 1: invalid username length")
	ErrAuthPhase2TooShort        = errors.New("AUTH Phase 2 payload too short")
	ErrAuthPhase2MissingSessKey  = errors.New("AUTH Phase 2: missing AUTH_SESSKEY")
	ErrAuthPhase2MissingPassword = errors.New("AUTH Phase 2: missing AUTH_PASSWORD")
	ErrUnexpectedPacketType      = errors.New("unexpected TNS packet type")
	ErrMaxResendExceeded         = errors.New("exceeded maximum resend attempts")
	ErrUpstreamTooManyRedirects  = errors.New("upstream: too many redirects")
	ErrRedirectMissingHostPort   = errors.New("redirect: could not extract HOST/PORT from descriptor")
)

var (
	ErrTNSHeaderTooShort = errors.New("TNS header too short: need at least 8 bytes")
	ErrTNSPacketTooLarge = errors.New("TNS packet length exceeds maximum")
)

var (
	ErrEmptySQL         = errors.New("OALL8 message contains empty SQL")
	ErrOALL8TooShort    = errors.New("OALL8 payload too short")
	ErrOFETCHTooShort   = errors.New("OFETCH payload too short")
	ErrSQLLengthInvalid = errors.New("OALL8 SQL length exceeds payload")
)

var (
	ErrInvalidDateLength      = errors.New("oracle DATE requires exactly 7 bytes")
	ErrInvalidTimestampLength = errors.New("oracle TIMESTAMP requires at least 11 bytes")
	ErrInvalidNumberData      = errors.New("oracle NUMBER data is empty")
)

var (
	ErrUpstreamConnNotSet         = errors.New("upstream connection not set before AUTH")
	ErrPhase1MissingSessKey       = errors.New("AUTH Phase 1 response: missing AUTH_SESSKEY")
	ErrPhase1MissingVerifierData  = errors.New("AUTH Phase 1 response: missing AUTH_VFR_DATA")
	ErrInvalidHex                 = errors.New("invalid hex character")
	ErrInvalidHexLength           = errors.New("invalid hex string length")
	ErrUpstreamAuthPhase1Rejected = errors.New("upstream AUTH Phase 1 rejected")
	ErrUpstreamAuthPhase2Rejected = errors.New("upstream AUTH Phase 2 rejected")
)

var ErrUnsupportedVerifier = errors.New("unsupported Oracle verifier type")