diff options
Diffstat (limited to 'lib/dns/rdata/generic/hip_55.c')
| -rw-r--r-- | lib/dns/rdata/generic/hip_55.c | 60 |
1 files changed, 59 insertions, 1 deletions
diff --git a/lib/dns/rdata/generic/hip_55.c b/lib/dns/rdata/generic/hip_55.c index 10106620..cc7ded31 100644 --- a/lib/dns/rdata/generic/hip_55.c +++ b/lib/dns/rdata/generic/hip_55.c @@ -14,7 +14,7 @@ * PERFORMANCE OF THIS SOFTWARE. */ -/* $Id: hip_55.c,v 1.4 2009/09/02 23:43:54 each Exp $ */ +/* $Id: hip_55.c,v 1.6 2009/12/04 22:06:37 tbox Exp $ */ /* reviewed: TBC */ @@ -449,4 +449,62 @@ dns_rdata_hip_current(dns_rdata_hip_t *hip, dns_name_t *name) { INSIST(name->length + hip->offset <= hip->servers_len); } +static inline int +casecompare_hip(ARGS_COMPARE) { + isc_region_t r1; + isc_region_t r2; + dns_name_t name1; + dns_name_t name2; + int order; + isc_uint8_t hit_len; + isc_uint16_t key_len; + + REQUIRE(rdata1->type == rdata2->type); + REQUIRE(rdata1->rdclass == rdata2->rdclass); + REQUIRE(rdata1->type == 55); + REQUIRE(rdata1->length != 0); + REQUIRE(rdata2->length != 0); + + dns_rdata_toregion(rdata1, &r1); + dns_rdata_toregion(rdata2, &r2); + + INSIST(r1.length > 4); + INSIST(r2.length > 4); + r1.length = 4; + r2.length = 4; + order = isc_region_compare(&r1, &r2); + if (order != 0) + return (order); + + hit_len = uint8_fromregion(&r1); + isc_region_consume(&r1, 2); /* hit length + algorithm */ + key_len = uint16_fromregion(&r1); + + dns_rdata_toregion(rdata1, &r1); + dns_rdata_toregion(rdata2, &r2); + isc_region_consume(&r1, 4); + isc_region_consume(&r2, 4); + INSIST(r1.length >= (unsigned) (hit_len + key_len)); + INSIST(r2.length >= (unsigned) (hit_len + key_len)); + order = isc_region_compare(&r1, &r2); + if (order != 0) + return (order); + isc_region_consume(&r1, hit_len + key_len); + isc_region_consume(&r2, hit_len + key_len); + + dns_name_init(&name1, NULL); + dns_name_init(&name2, NULL); + while (r1.length != 0 && r2.length != 0) { + dns_name_fromregion(&name1, &r1); + dns_name_fromregion(&name2, &r2); + order = dns_name_rdatacompare(&name1, &name2); + if (order != 0) + return (order); + + isc_region_consume(&r1, name_length(&name1)); + isc_region_consume(&r2, name_length(&name2)); + } + return (isc_region_compare(&r1, &r2)); +} + #endif /* RDATA_GENERIC_HIP_5_C */ |