Drop sanitize of SANs

Less complex, we will just pass lines to Go's HTTP GET as is.

1 files changed, 0 insertions, 85 deletions

diff --git a/internal/sanitize/sanitize.go b/internal/sanitize/sanitize.go
deleted file mode 100644
index 6fcdf09..0000000
--- a/internal/sanitize/sanitize.go
+++ /dev/null
@@ -1,85 +0,0 @@
-// Copyright (C) 2016 Opsmate, Inc.
-//
-// This Source Code Form is subject to the terms of the Mozilla
-// Public License, v. 2.0. If a copy of the MPL was not distributed
-// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
-//
-// This software is distributed WITHOUT A WARRANTY OF ANY KIND.
-// See the Mozilla Public License for details.
-//
-// From: https://github.com/SSLMate/certspotter/blob/master/identifiers.go
-// Minor tweaks to get a SanitizeDNSName function for ASCII names only.
-package sanitize
-
-import (
-	"fmt"
-	"strings"
-)
-
-// Try to canonicalize/sanitize the DNS name:
-//
-//  1. Trim leading and trailing whitespace
-//  2. Trim trailing dots
-//  3. Trim http:// and https:// prefix
-//  4. Convert to lower case
-//  5. Error if the DNS labels are not composed of ASCII characters 32-126 or "\t"
-//
-// Please note that the above is not necessarily a good filter for real CT
-// monitoring (this is why we're not applying it in the collect stage).  It is
-// also not a good filter for getting rid of non-domain names like "funny str".
-// It is however simple to understand ("printable ascii chars"), and should be
-// good enough for the purpose of assembling a SANs data set from CT logs.
-func SanitizeDNSName(value string) (string, error) {
-	value = trimHttpPrefixString(strings.ToLower(trimTrailingDots(strings.TrimSpace(value))))
-	if !isASCIIString([]byte(value)) {
-		return "", fmt.Errorf("not an ascii string: %x", []byte(value))
-	}
-
-	labels := strings.Split(value, ".")
-	for _, label := range labels {
-		if !isSaneDNSLabel(label) {
-			return "", fmt.Errorf("process label %x", []byte(label))
-		}
-	}
-	return strings.Join(labels, "."), nil
-}
-
-func trimTrailingDots(value string) string {
-	length := len(value)
-	for length > 0 && value[length-1] == '.' {
-		length--
-	}
-	return value[0:length]
-}
-
-func trimHttpPrefixString(value string) string {
-	if strings.HasPrefix(value, "http://") {
-		return value[7:]
-	} else if strings.HasPrefix(value, "https://") {
-		return value[8:]
-	} else {
-		return value
-	}
-}
-
-func isASCIIString(value []byte) bool {
-	for _, b := range value {
-		if b > 127 {
-			return false
-		}
-	}
-	return true
-}
-
-func isSaneDNSLabel(label string) bool {
-	for _, ch := range label {
-		if !isSaneDNSLabelChar(ch) {
-			return false
-		}
-	}
-	return true
-}
-
-func isSaneDNSLabelChar(ch rune) bool {
-	return ch == '\t' || (ch >= 32 && ch <= 126)
-}