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| author | Martin Pitt <martin.pitt@ubuntu.com> | 2016-09-09 17:11:54 +0200 |
|---|---|---|
| committer | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2016-09-09 16:11:54 +0100 |
| commit | f35c467db30481be231fca0056b132b2214f2d42 (patch) | |
| tree | 925dcfcf13a05b5b0a889e70b79cd5d27883169e /src/shared | |
| parent | 0dd99f86addd1f81e24e89807b6bc4aab57d5793 (diff) | |
shared: recognize DNS names with more than one trailing dot as invalid (#4111)
One trailing dot is valid, but more than one isn't. This also fixes glibc's
posix/tst-getaddrinfo5 test.
Fixes #3978.
Diffstat (limited to 'src/shared')
| -rw-r--r-- | src/shared/dns-domain.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/shared/dns-domain.c b/src/shared/dns-domain.c index 835557c6b2..892f0aadf5 100644 --- a/src/shared/dns-domain.c +++ b/src/shared/dns-domain.c @@ -131,6 +131,10 @@ int dns_label_unescape(const char **name, char *dest, size_t sz) { if (r == 0 && *n) return -EINVAL; + /* More than one trailing dot? */ + if (*n == '.') + return -EINVAL; + if (sz >= 1 && d) *d = 0; |