diff options
Diffstat (limited to 'src/shared/dns-domain.c')
| -rw-r--r-- | src/shared/dns-domain.c | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/src/shared/dns-domain.c b/src/shared/dns-domain.c index d1fb97fe92..ee0108715d 100644 --- a/src/shared/dns-domain.c +++ b/src/shared/dns-domain.c @@ -1189,6 +1189,26 @@ int dns_name_suffix(const char *name, unsigned n_labels, const char **ret) { return (int) (n - n_labels); } +int dns_name_skip(const char *a, unsigned n_labels, const char **ret) { + int r; + + assert(a); + assert(ret); + + for (; n_labels > 0; n_labels --) { + r = dns_name_parent(&a); + if (r < 0) + return r; + if (r == 0) { + *ret = ""; + return 0; + } + } + + *ret = a; + return 1; +} + int dns_name_count_labels(const char *name) { unsigned n = 0; const char *p; @@ -1219,14 +1239,9 @@ int dns_name_equal_skip(const char *a, unsigned n_labels, const char *b) { assert(a); assert(b); - while (n_labels > 0) { - - r = dns_name_parent(&a); - if (r <= 0) - return r; - - n_labels --; - } + r = dns_name_skip(a, n_labels, &a); + if (r <= 0) + return r; return dns_name_equal(a, b); } |