/** add hint to delegation hints */
static int
ah(struct delegpt* dp, const char* sv, const char* ip)
{
struct sockaddr_storage addr;
socklen_t addrlen;
ldns_rdf* rdf = ldns_dname_new_frm_str(sv);
if(!rdf) {
log_err("could not parse %s", sv);
return 0;
}
if(!delegpt_add_ns_mlc(dp, ldns_rdf_data(rdf), 0) ||
!extstrtoaddr(ip, &addr, &addrlen) ||
!delegpt_add_target_mlc(dp, ldns_rdf_data(rdf), ldns_rdf_size(rdf),
&addr, addrlen, 0, 0)) {
ldns_rdf_deep_free(rdf);
return 0;
}
ldns_rdf_deep_free(rdf);
return 1;
}
/** add hint to delegation hints */
static int
ah(struct delegpt* dp, const char* sv, const char* ip)
{
struct sockaddr_storage addr;
socklen_t addrlen;
size_t dname_len;
uint8_t* dname = sldns_str2wire_dname(sv, &dname_len);
if(!dname) {
log_err("could not parse %s", sv);
return 0;
}
if(!delegpt_add_ns_mlc(dp, dname, 0) ||
!extstrtoaddr(ip, &addr, &addrlen) ||
!delegpt_add_target_mlc(dp, dname, dname_len,
&addr, addrlen, 0, 0)) {
free(dname);
return 0;
}
free(dname);
return 1;
}
/** set stub host names */
static int
read_stubs_host(struct config_stub* s, struct delegpt* dp)
{
struct config_strlist* p;
ldns_rdf* rdf;
for(p = s->hosts; p; p = p->next) {
log_assert(p->str);
rdf = ldns_dname_new_frm_str(p->str);
if(!rdf) {
log_err("cannot parse stub %s nameserver name: '%s'",
s->name, p->str);
return 0;
}
if(!delegpt_add_ns_mlc(dp, ldns_rdf_data(rdf), 0)) {
ldns_rdf_deep_free(rdf);
log_err("out of memory");
return 0;
}
ldns_rdf_deep_free(rdf);
}
return 1;
}
/** set stub host names */
static int
read_stubs_host(struct config_stub* s, struct delegpt* dp)
{
struct config_strlist* p;
size_t dname_len;
uint8_t* dname;
for(p = s->hosts; p; p = p->next) {
log_assert(p->str);
dname = sldns_str2wire_dname(p->str, &dname_len);
if(!dname) {
log_err("cannot parse stub %s nameserver name: '%s'",
s->name, p->str);
return 0;
}
if(!delegpt_add_ns_mlc(dp, dname, 0)) {
free(dname);
log_err("out of memory");
return 0;
}
free(dname);
}
return 1;
}
/** read root hints from file */
static int
read_root_hints(struct iter_hints* hints, char* fname)
{
struct sldns_file_parse_state pstate;
struct delegpt* dp;
uint8_t rr[LDNS_RR_BUF_SIZE];
size_t rr_len, dname_len;
int status;
uint16_t c = LDNS_RR_CLASS_IN;
FILE* f = fopen(fname, "r");
if(!f) {
log_err("could not read root hints %s: %s",
fname, strerror(errno));
return 0;
}
dp = delegpt_create_mlc(NULL);
if(!dp) {
log_err("out of memory reading root hints");
fclose(f);
return 0;
}
verbose(VERB_QUERY, "Reading root hints from %s", fname);
memset(&pstate, 0, sizeof(pstate));
pstate.lineno = 1;
dp->has_parent_side_NS = 1;
while(!feof(f)) {
rr_len = sizeof(rr);
dname_len = 0;
status = sldns_fp2wire_rr_buf(f, rr, &rr_len, &dname_len,
&pstate);
if(status != 0) {
log_err("reading root hints %s %d:%d: %s", fname,
pstate.lineno, LDNS_WIREPARSE_OFFSET(status),
sldns_get_errorstr_parse(status));
goto stop_read;
}
if(rr_len == 0)
continue; /* EMPTY line, TTL or ORIGIN */
if(sldns_wirerr_get_type(rr, rr_len, dname_len)
== LDNS_RR_TYPE_NS) {
if(!delegpt_add_ns_mlc(dp, sldns_wirerr_get_rdata(rr,
rr_len, dname_len), 0)) {
log_err("out of memory reading root hints");
goto stop_read;
}
c = sldns_wirerr_get_class(rr, rr_len, dname_len);
if(!dp->name) {
if(!delegpt_set_name_mlc(dp, rr)) {
log_err("out of memory.");
goto stop_read;
}
}
} else if(sldns_wirerr_get_type(rr, rr_len, dname_len)
== LDNS_RR_TYPE_A && sldns_wirerr_get_rdatalen(rr,
rr_len, dname_len) == INET_SIZE) {
struct sockaddr_in sa;
socklen_t len = (socklen_t)sizeof(sa);
memset(&sa, 0, len);
sa.sin_family = AF_INET;
sa.sin_port = (in_port_t)htons(UNBOUND_DNS_PORT);
memmove(&sa.sin_addr,
sldns_wirerr_get_rdata(rr, rr_len, dname_len),
INET_SIZE);
if(!delegpt_add_target_mlc(dp, rr, dname_len,
(struct sockaddr_storage*)&sa, len,
0, 0)) {
log_err("out of memory reading root hints");
goto stop_read;
}
} else if(sldns_wirerr_get_type(rr, rr_len, dname_len)
== LDNS_RR_TYPE_AAAA && sldns_wirerr_get_rdatalen(rr,
rr_len, dname_len) == INET6_SIZE) {
struct sockaddr_in6 sa;
socklen_t len = (socklen_t)sizeof(sa);
memset(&sa, 0, len);
sa.sin6_family = AF_INET6;
sa.sin6_port = (in_port_t)htons(UNBOUND_DNS_PORT);
memmove(&sa.sin6_addr,
sldns_wirerr_get_rdata(rr, rr_len, dname_len),
INET6_SIZE);
if(!delegpt_add_target_mlc(dp, rr, dname_len,
(struct sockaddr_storage*)&sa, len,
0, 0)) {
log_err("out of memory reading root hints");
goto stop_read;
}
} else {
char buf[17];
sldns_wire2str_type_buf(sldns_wirerr_get_type(rr,
rr_len, dname_len), buf, sizeof(buf));
log_warn("root hints %s:%d skipping type %s",
fname, pstate.lineno, buf);
}
}
fclose(f);
if(!dp->name) {
log_warn("root hints %s: no NS content", fname);
delegpt_free_mlc(dp);
return 1;
}
if(!hints_insert(hints, c, dp, 0)) {
return 0;
}
delegpt_log(VERB_QUERY, dp);
return 1;
stop_read:
delegpt_free_mlc(dp);
fclose(f);
return 0;
}
/** read root hints from file */
static int
read_root_hints(struct iter_hints* hints, char* fname)
{
int lineno = 0;
uint32_t default_ttl = 0;
ldns_rdf* origin = NULL;
ldns_rdf* prev_rr = NULL;
struct delegpt* dp;
ldns_rr* rr = NULL;
ldns_status status;
uint16_t c = LDNS_RR_CLASS_IN;
FILE* f = fopen(fname, "r");
if(!f) {
log_err("could not read root hints %s: %s",
fname, strerror(errno));
return 0;
}
dp = delegpt_create_mlc(NULL);
if(!dp) {
log_err("out of memory reading root hints");
fclose(f);
return 0;
}
verbose(VERB_QUERY, "Reading root hints from %s", fname);
dp->has_parent_side_NS = 1;
while(!feof(f)) {
status = ldns_rr_new_frm_fp_l(&rr, f,
&default_ttl, &origin, &prev_rr, &lineno);
if(status == LDNS_STATUS_SYNTAX_EMPTY ||
status == LDNS_STATUS_SYNTAX_TTL ||
status == LDNS_STATUS_SYNTAX_ORIGIN)
continue;
if(status != LDNS_STATUS_OK) {
log_err("reading root hints %s %d: %s", fname,
lineno, ldns_get_errorstr_by_id(status));
goto stop_read;
}
if(ldns_rr_get_type(rr) == LDNS_RR_TYPE_NS) {
if(!delegpt_add_ns_mlc(dp,
ldns_rdf_data(ldns_rr_rdf(rr, 0)), 0)) {
log_err("out of memory reading root hints");
goto stop_read;
}
c = ldns_rr_get_class(rr);
if(!dp->name) {
if(!delegpt_set_name_mlc(dp,
ldns_rdf_data(ldns_rr_owner(rr)))){
log_err("out of memory.");
goto stop_read;
}
}
} else if(ldns_rr_get_type(rr) == LDNS_RR_TYPE_A) {
struct sockaddr_in sa;
socklen_t len = (socklen_t)sizeof(sa);
memset(&sa, 0, len);
sa.sin_family = AF_INET;
sa.sin_port = (in_port_t)htons(UNBOUND_DNS_PORT);
memmove(&sa.sin_addr,
ldns_rdf_data(ldns_rr_rdf(rr, 0)), INET_SIZE);
if(!delegpt_add_target_mlc(dp,
ldns_rdf_data(ldns_rr_owner(rr)),
ldns_rdf_size(ldns_rr_owner(rr)),
(struct sockaddr_storage*)&sa, len,
0, 0)) {
log_err("out of memory reading root hints");
goto stop_read;
}
} else if(ldns_rr_get_type(rr) == LDNS_RR_TYPE_AAAA) {
struct sockaddr_in6 sa;
socklen_t len = (socklen_t)sizeof(sa);
memset(&sa, 0, len);
sa.sin6_family = AF_INET6;
sa.sin6_port = (in_port_t)htons(UNBOUND_DNS_PORT);
memmove(&sa.sin6_addr,
ldns_rdf_data(ldns_rr_rdf(rr, 0)), INET6_SIZE);
if(!delegpt_add_target_mlc(dp,
ldns_rdf_data(ldns_rr_owner(rr)),
ldns_rdf_size(ldns_rr_owner(rr)),
(struct sockaddr_storage*)&sa, len,
0, 0)) {
log_err("out of memory reading root hints");
goto stop_read;
}
} else {
log_warn("root hints %s:%d skipping type %d",
fname, lineno, ldns_rr_get_type(rr));
}
ldns_rr_free(rr);
}
if (origin)
ldns_rdf_deep_free(origin);
if (prev_rr)
ldns_rdf_deep_free(prev_rr);
fclose(f);
if(!dp->name) {
log_warn("root hints %s: no NS content", fname);
delegpt_free_mlc(dp);
return 1;
}
if(!hints_insert(hints, c, dp, 0)) {
return 0;
}
delegpt_log(VERB_QUERY, dp);
return 1;
stop_read:
if (origin)
ldns_rdf_deep_free(origin);
if (prev_rr)
ldns_rdf_deep_free(prev_rr);
delegpt_free_mlc(dp);
fclose(f);
return 0;
}