Hi all,
I'd like to get the TTL value for a DNS request. I looked at what it
would take to add this to struct ub_result and it doesn't look too
difficult - patch attached.
Is this the right approach? Or should I use ldns to parse the raw
packet bytes to get the ttl?
Thanks,
David
diff -Naur unbound-svn/libunbound/libworker.c unbound-svn/libunbound/libworker.c
--- unbound-svn/libunbound/libworker.c 2009-11-13 13:49:03.000000000 -0700
+++ unbound-svn/libunbound/libworker.c 2009-11-13 14:17:26.000000000 -0700
@@ -393,11 +393,13 @@
} else res->canonname = NULL;
res->data = (char**)calloc(data->count+1, sizeof(char*));
res->len = (int*)calloc(data->count+1, sizeof(int));
- if(!res->data || !res->len)
+ res->ttl = (unsigned*)calloc(data->count+1, sizeof(unsigned));
+ if(!res->data || !res->len || !res->ttl)
return 0; /* out of memory */
for(i=0; i<data->count; i++) {
/* remove rdlength from rdata */
res->len[i] = (int)(data->rr_len[i] - 2);
+ res->ttl[i] = data->rr_ttl[i];
res->data[i] = memdup(data->rr_data[i]+2, (size_t)res->len[i]);
if(!res->data[i])
return 0; /* out of memory */
diff -Naur unbound-svn/libunbound/unbound.h unbound-svn/libunbound/unbound.h
--- unbound-svn/libunbound/unbound.h 2009-11-13 13:49:03.000000000 -0700
+++ unbound-svn/libunbound/unbound.h 2009-11-13 14:18:55.000000000 -0700
@@ -126,6 +126,9 @@
/** the length in bytes of the data items, len[i] for data[i] */
int* len;
+ /** TTL (in seconds like time()) of rdata items */
+ unsigned* ttl;
+
/**
* canonical name for the result (the final cname).
* zero terminated string.
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