예제 #1
0
/** return name and class and rdata of rr; parses string */
static int
get_rr_content(const char* str, uint8_t** nm, uint16_t* type,
	uint16_t* dclass, time_t* ttl, uint8_t* rr, size_t len,
	uint8_t** rdata, size_t* rdata_len)
{
	size_t dname_len = 0;
	int e = sldns_str2wire_rr_buf(str, rr, &len, &dname_len, 3600,
		NULL, 0, NULL, 0);
	if(e) {
		log_err("error parsing local-data at %d: '%s': %s",
			LDNS_WIREPARSE_OFFSET(e), str,
			sldns_get_errorstr_parse(e));
		return 0;
	}
	*nm = memdup(rr, dname_len);
	if(!*nm) {
		log_err("out of memory");
		return 0;
	}
	*dclass = sldns_wirerr_get_class(rr, len, dname_len);
	*type = sldns_wirerr_get_type(rr, len, dname_len);
	*ttl = (time_t)sldns_wirerr_get_ttl(rr, len, dname_len);
	*rdata = sldns_wirerr_get_rdatawl(rr, len, dname_len);
	*rdata_len = sldns_wirerr_get_rdatalen(rr, len, dname_len)+2;
	return 1;
}
예제 #2
0
/** load an RR into rrset */
static int
load_rr(SSL* ssl, sldns_buffer* buf, struct regional* region,
	struct ub_packed_rrset_key* rk, struct packed_rrset_data* d,
	unsigned int i, int is_rrsig, int* go_on, time_t now)
{
	uint8_t rr[LDNS_RR_BUF_SIZE];
	size_t rr_len = sizeof(rr), dname_len = 0;
	int status;

	/* read the line */
	if(!ssl_read_buf(ssl, buf))
		return 0;
	if(strncmp((char*)sldns_buffer_begin(buf), "BADRR\n", 6) == 0) {
		*go_on = 0;
		return 1;
	}
	status = sldns_str2wire_rr_buf((char*)sldns_buffer_begin(buf), rr,
		&rr_len, &dname_len, 3600, NULL, 0, NULL, 0);
	if(status != 0) {
		log_warn("error cannot parse rr: %s: %s",
			sldns_get_errorstr_parse(status),
			(char*)sldns_buffer_begin(buf));
		return 0;
	}
	if(is_rrsig && sldns_wirerr_get_type(rr, rr_len, dname_len)
		!= LDNS_RR_TYPE_RRSIG) {
		log_warn("error expected rrsig but got %s",
			(char*)sldns_buffer_begin(buf));
		return 0;
	}

	/* convert ldns rr into packed_rr */
	d->rr_ttl[i] = (time_t)sldns_wirerr_get_ttl(rr, rr_len, dname_len) + now;
	sldns_buffer_clear(buf);
	d->rr_len[i] = sldns_wirerr_get_rdatalen(rr, rr_len, dname_len)+2;
	d->rr_data[i] = (uint8_t*)regional_alloc_init(region, 
		sldns_wirerr_get_rdatawl(rr, rr_len, dname_len), d->rr_len[i]);
	if(!d->rr_data[i]) {
		log_warn("error out of memory");
		return 0;
	}

	/* if first entry, fill the key structure */
	if(i==0) {
		rk->rk.type = htons(sldns_wirerr_get_type(rr, rr_len, dname_len));
		rk->rk.rrset_class = htons(sldns_wirerr_get_class(rr, rr_len, dname_len));
		rk->rk.dname_len = dname_len;
		rk->rk.dname = regional_alloc_init(region, rr, dname_len);
		if(!rk->rk.dname) {
			log_warn("error out of memory");
			return 0;
		}
	}

	return 1;
}
예제 #3
0
/** find local data tag string match for the given type in the list */
static int
find_tag_datas(struct query_info* qinfo, struct config_strlist* list,
	struct ub_packed_rrset_key* r, struct regional* temp,
	uint8_t* zname, size_t zlen)
{
	struct config_strlist* p;
	char buf[65536];
	uint8_t rr[LDNS_RR_BUF_SIZE];
	size_t len;
	int res;
	struct packed_rrset_data* d;
	for(p=list; p; p=p->next) {
		len = sizeof(rr);
		/* does this element match the type? */
		snprintf(buf, sizeof(buf), ". %s", p->str);
		res = sldns_str2wire_rr_buf(buf, rr, &len, NULL, 3600,
			zname, zlen, NULL, 0);
		if(res != 0)
			/* parse errors are already checked before, in
			 * acllist check_data, skip this for robustness */
			continue;
		if(len < 1 /* . */ + 8 /* typeclassttl*/ + 2 /*rdatalen*/)
			continue;
		if(sldns_wirerr_get_type(rr, len, 1) != qinfo->qtype)
			continue;
		
		/* do we have entries already? if not setup key */
		if(r->rk.dname == NULL) {
			r->entry.key = r;
			r->rk.dname = qinfo->qname;
			r->rk.dname_len = qinfo->qname_len;
			r->rk.type = htons(qinfo->qtype);
			r->rk.rrset_class = htons(qinfo->qclass);
			r->rk.flags = 0;
			d = (struct packed_rrset_data*)regional_alloc_zero(
				temp, sizeof(struct packed_rrset_data)
				+ sizeof(size_t) + sizeof(uint8_t*) +
				sizeof(time_t));
			if(!d) return 0; /* out of memory */
			r->entry.data = d;
			d->ttl = sldns_wirerr_get_ttl(rr, len, 1);
			d->rr_len = (size_t*)((uint8_t*)d +
				sizeof(struct packed_rrset_data));
			d->rr_data = (uint8_t**)&(d->rr_len[1]);
			d->rr_ttl = (time_t*)&(d->rr_data[1]);
		}
		d = (struct packed_rrset_data*)r->entry.data;
		/* add entry to the data */
		if(d->count != 0) {
			size_t* oldlen = d->rr_len;
			uint8_t** olddata = d->rr_data;
			time_t* oldttl = d->rr_ttl;
			/* increase arrays for lookup */
			/* this is of course slow for very many records,
			 * but most redirects are expected with few records */
			d->rr_len = (size_t*)regional_alloc_zero(temp,
				(d->count+1)*sizeof(size_t));
			d->rr_data = (uint8_t**)regional_alloc_zero(temp,
				(d->count+1)*sizeof(uint8_t*));
			d->rr_ttl = (time_t*)regional_alloc_zero(temp,
				(d->count+1)*sizeof(time_t));
			if(!d->rr_len || !d->rr_data || !d->rr_ttl)
				return 0; /* out of memory */
			/* first one was allocated after struct d, but new
			 * ones get their own array increment alloc, so
			 * copy old content */
			memmove(d->rr_len, oldlen, d->count*sizeof(size_t));
			memmove(d->rr_data, olddata, d->count*sizeof(uint8_t*));
			memmove(d->rr_ttl, oldttl, d->count*sizeof(time_t));
		}

		d->rr_len[d->count] = sldns_wirerr_get_rdatalen(rr, len, 1)+2;
		d->rr_ttl[d->count] = sldns_wirerr_get_ttl(rr, len, 1);
		d->rr_data[d->count] = regional_alloc_init(temp,
			sldns_wirerr_get_rdatawl(rr, len, 1),
			d->rr_len[d->count]);
		if(!d->rr_data[d->count])
			if(!d) return 0; /* out of memory */
		d->count++;
	}
	if(r->rk.dname)
		return 1;
	return 0;
}