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Add an "officially undocumented" tweak for squid so that it can see the

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TTL of DNS records that it looks up for it's resolver cache.

Obtained from: Endre Balint Nagy <bne@CareNet.hu>, via squid-1.1.x source.
This commit is contained in:
peter 1996-11-01 06:25:43 +00:00
parent 205d00aa37
commit f2ea0e210e
1 changed files with 7 additions and 2 deletions
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9
lib/libc/net/gethostbydns.c
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@ -53,7 +53,7 @@
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)gethostnamadr.c 8.1 (Berkeley) 6/4/93"; static char sccsid[] = "@(#)gethostnamadr.c 8.1 (Berkeley) 6/4/93";
static char rcsid[] = "$Id: gethostbydns.c,v 1.10 1996/08/29 20:07:50 peter Exp $"; static char rcsid[] = "$Id: gethostbydns.c,v 1.11 1996/10/01 03:45:06 pst Exp $";
#endif /* LIBC_SCCS and not lint */ #endif /* LIBC_SCCS and not lint */
#include <sys/types.h> #include <sys/types.h>
@ -113,6 +113,7 @@ typedef union {
} align; } align;
extern int h_errno; extern int h_errno;
int _dns_ttl_;
#ifdef DEBUG #ifdef DEBUG
static void static void
@ -204,6 +205,7 @@ gethostanswer(answer, anslen, qname, qtype)
host.h_addr_list = h_addr_ptrs; host.h_addr_list = h_addr_ptrs;
haveanswer = 0; haveanswer = 0;
had_error = 0; had_error = 0;
_dns_ttl_ = -1;
while (ancount-- > 0 && cp < eom && !had_error) { while (ancount-- > 0 && cp < eom && !had_error) {
n = dn_expand(answer->buf, eom, cp, bp, buflen); n = dn_expand(answer->buf, eom, cp, bp, buflen);
if ((n < 0) || !(*name_ok)(bp)) { if ((n < 0) || !(*name_ok)(bp)) {
@ -214,7 +216,10 @@ gethostanswer(answer, anslen, qname, qtype)
type = _getshort(cp); type = _getshort(cp);
cp += INT16SZ; /* type */ cp += INT16SZ; /* type */
class = _getshort(cp); class = _getshort(cp);
cp += INT16SZ + INT32SZ; /* class, TTL */ cp += INT16SZ; /* class */
if (qtype == T_A && type == T_A)
_dns_ttl_ = _getlong(cp);
cp += INT32SZ; /* TTL */
n = _getshort(cp); n = _getshort(cp);
cp += INT16SZ; /* len */ cp += INT16SZ; /* len */
if (class != C_IN) { if (class != C_IN) {