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Diffstat (limited to 'src/basic/hostname-util.c')
| -rw-r--r-- | src/basic/hostname-util.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/basic/hostname-util.c b/src/basic/hostname-util.c index 5c3157fdf2..82cd37b154 100644 --- a/src/basic/hostname-util.c +++ b/src/basic/hostname-util.c @@ -89,6 +89,8 @@ int gethostname_strict(char **ret) { } bool valid_ldh_char(char c) { + /* "LDH" → "Letters, digits, hyphens", as per RFC 5890, Section 2.3.1 */ + return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || |