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5c380cdacb
Closes: #4537 Uses SignedHeaderBefore to find header before unverified header and then bisection to verify the header. Only when header is between first and last trusted header height else if before the first trusted header height then regular backwards verification is used.
49 lines
1.3 KiB
Go
49 lines
1.3 KiB
Go
package lite
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import (
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"fmt"
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"time"
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"github.com/tendermint/tendermint/types"
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)
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// ErrOldHeaderExpired means the old (trusted) header has expired according to
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// the given trustingPeriod and current time. If so, the light client must be
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// reset subjectively.
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type ErrOldHeaderExpired struct {
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At time.Time
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Now time.Time
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}
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func (e ErrOldHeaderExpired) Error() string {
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return fmt.Sprintf("old header has expired at %v (now: %v)", e.At, e.Now)
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}
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// ErrNewValSetCantBeTrusted means the new validator set cannot be trusted
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// because < 1/3rd (+trustLevel+) of the old validator set has signed.
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type ErrNewValSetCantBeTrusted struct {
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Reason types.ErrNotEnoughVotingPowerSigned
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}
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func (e ErrNewValSetCantBeTrusted) Error() string {
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return fmt.Sprintf("cant trust new val set: %v", e.Reason)
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}
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// ErrInvalidHeader means the header either failed the basic validation or
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// commit is not signed by 2/3+.
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type ErrInvalidHeader struct {
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Reason error
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}
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func (e ErrInvalidHeader) Error() string {
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return fmt.Sprintf("invalid header: %v", e.Reason)
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}
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// errNoWitnesses means that there are not enough witnesses connected to
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// continue running the light client.
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type errNoWitnesses struct{}
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func (e errNoWitnesses) Error() string {
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return fmt.Sprint("no witnesses connected. please reset light client")
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}
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