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| author | Lennart Poettering <lennart@poettering.net> | 2015-01-28 17:48:05 +0100 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2015-01-28 17:48:05 +0100 |
| commit | 40672b99c7da7efd317fc31612504fe7d5ab0b65 (patch) | |
| tree | 0e68dcd25d63441be2028877385ce880bb0c6c65 /src/shared/util.c | |
| parent | 477e75ef9ea6bb2e7e8cc76278c442942110f227 (diff) | |
util: add comment explaining hostname_is_valid()
Diffstat (limited to 'src/shared/util.c')
| -rw-r--r-- | src/shared/util.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/shared/util.c b/src/shared/util.c index 891182a35b..11cab6dcf1 100644 --- a/src/shared/util.c +++ b/src/shared/util.c @@ -4248,6 +4248,11 @@ bool hostname_is_valid(const char *s) { if (isempty(s)) return false; + /* Doesn't accept empty hostnames, hostnames with trailing or + * leading dots, and hostnames with multiple dots in a + * sequence. Also ensures that the length stays below + * HOST_NAME_MAX. */ + for (p = s, dot = true; *p; p++) { if (*p == '.') { if (dot) |