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Allow null characters in wire fmt name -> fqdn

This commit is contained in:
Willem Toorop 2013-12-20 13:25:55 +01:00
parent 0b2d467420
commit d6118b4caa
1 changed files with 16 additions and 4 deletions
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20
src/convert.c
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@ -41,14 +41,26 @@
/* stuff to make it compile pedantically */ /* stuff to make it compile pedantically */
#define UNUSED_PARAM(x) ((void)(x)) #define UNUSED_PARAM(x) ((void)(x))
static size_t sizeof_dname(uint8_t *dname)
{
uint8_t *ptr;
assert(dname);
ptr = dname;
while (*ptr && (*ptr & 0xC0) == 0)
ptr += *ptr + 1;
if ((*ptr & 0xC0) == 0xC0)
ptr++;
return (ptr - dname) + 1;
}
char * char *
getdns_convert_dns_name_to_fqdn(char *name_from_dns_response) getdns_convert_dns_name_to_fqdn(char *name_from_dns_response)
{ {
char *str; char *str;
ldns_rdf *rdf = ldns_rdf_new_frm_data( LDNS_RDF_TYPE_DNAME ldns_rdf *rdf = ldns_rdf_new_frm_data(LDNS_RDF_TYPE_DNAME,
, strlen(name_from_dns_response)+1 sizeof_dname((uint8_t *)name_from_dns_response),
, name_from_dns_response name_from_dns_response);
);
if (!rdf) return NULL; if (!rdf) return NULL;
str = ldns_rdf2str(rdf); str = ldns_rdf2str(rdf);
ldns_rdf_free(rdf); ldns_rdf_free(rdf);