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Don't ignore zero TTL in DNS answers

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This commit is contained in:
Andreas Schwab
2010-11-25 20:50:16 -05:00
committed by Ulrich Drepper
parent 3bf8d1b10c
commit a769081960
2 changed files with 9 additions and 4 deletions
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7
resolv/nss_dns/dns-host.c
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@@ -599,7 +599,6 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
int (*name_ok) (const char *);
u_char packtmp[NS_MAXCDNAME];
int have_to_map = 0;
int32_t ttl = 0;
uintptr_t pad = -(uintptr_t) buffer % __alignof__ (struct host_data);
buffer += pad;
if (__builtin_expect (buflen < sizeof (struct host_data) + pad, 0))
@@ -733,7 +732,7 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
cp += INT16SZ; /* type */
class = __ns_get16 (cp);
cp += INT16SZ; /* class */
ttl = __ns_get32 (cp);
int32_t ttl = __ns_get32 (cp);
cp += INT32SZ; /* TTL */
n = __ns_get16 (cp);
cp += INT16SZ; /* len */
@@ -907,7 +906,7 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
{
register int nn;
if (ttlp != NULL && ttl != 0)
if (ttlp != NULL)
*ttlp = ttl;
if (canonp != NULL)
*canonp = bp;
@@ -1163,7 +1162,7 @@ gaih_getanswer_slice (const querybuf *answer, int anslen, const char *qname,
if (*firstp)
{
if (ttl != 0 && ttlp != NULL)
if (ttlp != NULL)
*ttlp = ttl;
(*pat)->name = canon ?: h_name;