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package utils
import (
"crypto/sha256"
"fmt"
"os"
"gitlab.torproject.org/rgdd/ct/pkg/metadata"
)
// Logs select logs that count towards CT-compliance checks. Logs that don't
// have a description are skipped after printing a warning.
func Logs(md metadata.Metadata) (logs []metadata.Log) {
for _, operators := range md.Operators {
for _, log := range operators.Logs {
if log.Description == nil {
fmt.Fprintf(os.Stderr, "WARNING: skipping log without description")
continue
}
if log.State == nil {
continue // skip logs with unknown states
}
if log.State.Name == metadata.LogStatePending {
continue // pending logs do not count towards CT-compliance
}
if log.State.Name == metadata.LogStateRetired {
continue // retired logs are not necessarily reachable
}
if log.State.Name == metadata.LogStateRejected {
continue // rejected logs do not count towards CT-compliance
}
logs = append(logs, log)
}
}
return
}
// Proof formats hashes so that they can be passed to the merkle package
func Proof(hashes [][]byte) (p [][sha256.Size]byte) {
for _, hash := range hashes {
var h [sha256.Size]byte
copy(h[:], hash)
p = append(p, h)
}
return
}
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