/
filterChecksumAlgos.go
51 lines (44 loc) · 1.04 KB
/
filterChecksumAlgos.go
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package main
import (
"crypto"
"strings"
)
// Checksum algos
import (
_ "crypto/md5"
_ "crypto/sha1"
_ "crypto/sha256"
_ "crypto/sha512"
)
// Man, why don't people allow their table to be exported...
var checksumLookupTable = map[string]crypto.Hash{
"md5": crypto.MD5,
"md5sum": crypto.MD5,
"sha1": crypto.SHA1,
"sha1sum": crypto.SHA1,
"sha256": crypto.SHA256,
"sha256sum": crypto.SHA256,
"sha512": crypto.SHA512,
"sha512sum": crypto.SHA512,
}
var allChecksumAlgos []string
var checksumAlgos = map[string]crypto.Hash{}
func init() {
allChecksumAlgos = make([]string, len(checksumLookupTable))
i := 0
for k := range checksumLookupTable {
allChecksumAlgos[i] = k
i++
}
}
func filterChecksumAlgos() {
i := strings.Split(config.Checksums, ",")
var j = map[string]crypto.Hash{}
for _, checksum := range i {
if checksumLookupTable[checksum].Available() == false {
Error.Fatalf("Unsupported checksum algorithm: %v\n", checksum)
}
j[checksum] = checksumLookupTable[checksum]
}
checksumLookupTable = j
}