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Diffstat (limited to 'vendor/github.com/miekg/dns/defaults.go')
| -rw-r--r-- | vendor/github.com/miekg/dns/defaults.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/vendor/github.com/miekg/dns/defaults.go b/vendor/github.com/miekg/dns/defaults.go index d47b0b1f2..f2cdbf430 100644 --- a/vendor/github.com/miekg/dns/defaults.go +++ b/vendor/github.com/miekg/dns/defaults.go @@ -218,6 +218,11 @@ func IsDomainName(s string) (labels int, ok bool) { wasDot = false case '.': + if i == 0 && len(s) > 1 { + // leading dots are not legal except for the root zone + return labels, false + } + if wasDot { // two dots back to back is not legal return labels, false |