Keep source sockaddr for every cached DNS record

[project/mdnsd.git] / dns.c

diff --git a/dns.c b/dns.c
index 51a0150..899b124 100644 (file)
--- a/dns.c
+++ b/dns.c
@@ -312,8 +312,9 @@ dns_consume_name(const uint8_t *base, int blen, uint8_t **data, int *len)
        return name_buffer;
 }
 
-static int
-parse_answer(struct interface *iface, uint8_t *buffer, int len, uint8_t **b, int *rlen, int cache)
+static int parse_answer(struct interface *iface, struct sockaddr *from,
+                       uint8_t *buffer, int len, uint8_t **b, int *rlen,
+                       int cache)
 {
        char *name = dns_consume_name(buffer, len, b, rlen);
        struct dns_answer *a;
@@ -343,7 +344,7 @@ parse_answer(struct interface *iface, uint8_t *buffer, int len, uint8_t **b, int
        *b += a->rdlength;
 
        if (cache)
-               cache_answer(iface, buffer, len, name, a, rdata, a->class & CLASS_FLUSH);
+               cache_answer(iface, from, buffer, len, name, a, rdata, a->class & CLASS_FLUSH);
 
        return 0;
 }
@@ -400,7 +401,7 @@ parse_question(struct interface *iface, struct sockaddr *from, char *name, struc
 }
 
 void
-dns_handle_packet(struct interface *iface, struct sockaddr *s, uint16_t port, uint8_t *buffer, int len)
+dns_handle_packet(struct interface *iface, struct sockaddr *from, uint16_t port, uint8_t *buffer, int len)
 {
        struct dns_header *h;
        uint8_t *b = buffer;
@@ -432,22 +433,22 @@ dns_handle_packet(struct interface *iface, struct sockaddr *s, uint16_t port, ui
                }
 
                if (!(h->flags & FLAG_RESPONSE))
-                       parse_question(iface, s, name, q);
+                       parse_question(iface, from, name, q);
        }
 
        if (!(h->flags & FLAG_RESPONSE))
                return;
 
        while (h->answers-- > 0)
-               if (parse_answer(iface, buffer, len, &b, &rlen, 1))
+               if (parse_answer(iface, from, buffer, len, &b, &rlen, 1))
                        return;
 
        while (h->authority-- > 0)
-               if (parse_answer(iface, buffer, len, &b, &rlen, 1))
+               if (parse_answer(iface, from, buffer, len, &b, &rlen, 1))
                        return;
 
        while (h->additional-- > 0)
-               if (parse_answer(iface, buffer, len, &b, &rlen, 1))
+               if (parse_answer(iface, from, buffer, len, &b, &rlen, 1))
                        return;
 
 }