return 0;
if (random_seed == 0)
{
- if (running_in_test_harness) random_seed = 42; else
+ if (f.running_in_test_harness) random_seed = 42; else
{
int p = (int)getpid();
random_seed = (int)time(NULL) ^ ((p << 16) | p);
/* For testing the case when a lookup does not complete, we have a special
reserved IP address. */
-if (running_in_test_harness &&
+if (f.running_in_test_harness &&
Ustrcmp(sender_host_address, "99.99.99.99") == 0)
{
HDEBUG(D_host_lookup)
/* If we have failed to find a name, return FAIL and log when required.
NB host_lookup_msg must be in permanent store. */
-if (sender_host_name == NULL)
+if (!sender_host_name)
{
- if (host_checking || !log_testing_mode)
+ if (host_checking || !f.log_testing_mode)
log_write(L_host_lookup_failed, LOG_MAIN, "no host name found for IP "
"address %s", sender_host_address);
host_lookup_msg = US" (failed to find host name from IP address)";
{
int rc;
BOOL ok = FALSE;
- host_item h;
- dnssec_domains d;
-
- h.next = NULL;
- h.name = hname;
- h.mx = MX_NONE;
- h.address = NULL;
- d.request = sender_host_dnssec ? US"*" : NULL;;
- d.require = NULL;
+ host_item h = { .next = NULL, .name = hname, .mx = MX_NONE, .address = NULL };
+ dnssec_domains d =
+ { .request = sender_host_dnssec ? US"*" : NULL, .require = NULL };
if ( (rc = host_find_bydns(&h, NULL, HOST_FIND_BY_A | HOST_FIND_BY_AAAA,
NULL, NULL, NULL, &d, NULL, NULL)) == HOST_FOUND
/* Initialize the flag that gets set for DNS syntax check errors, so that the
interface to this function can be similar to host_find_bydns. */
-host_find_failed_syntax = FALSE;
+f.host_find_failed_syntax = FALSE;
/* Loop to look up both kinds of address in an IPv6 world */
if (slow_lookup_log) time_msec = get_time_in_ms();
#if HAVE_IPV6
- if (running_in_test_harness)
+ if (f.running_in_test_harness)
hostdata = host_fake_gethostbyname(host->name, af, &error_num);
else
{
}
#else /* not HAVE_IPV6 */
- if (running_in_test_harness)
+ if (f.running_in_test_harness)
hostdata = host_fake_gethostbyname(host->name, AF_INET, &error_num);
else
{
HDEBUG(D_host_lookup) debug_printf("%s\n", msg);
if (temp_error) goto RETURN_AGAIN;
- if (host_checking || !log_testing_mode)
+ if (host_checking || !f.log_testing_mode)
log_write(L_host_lookup_failed, LOG_MAIN, "%s", msg);
return HOST_FIND_FAILED;
}
dns_init((whichrrs & HOST_FIND_QUALIFY_SINGLE) != 0,
(whichrrs & HOST_FIND_SEARCH_PARENTS) != 0,
dnssec_request);
-host_find_failed_syntax = FALSE;
+f.host_find_failed_syntax = FALSE;
/* First, if requested, look for SRV records. The service name is given; we
assume TCP protocol. DNS domain names are constrained to a maximum of 256
characters, so the code below should be safe. */
-if ((whichrrs & HOST_FIND_BY_SRV) != 0)
+if (whichrrs & HOST_FIND_BY_SRV)
{
- uschar buffer[300];
- uschar *temp_fully_qualified_name = buffer;
+ gstring * g;
+ uschar * temp_fully_qualified_name;
int prefix_length;
- (void)sprintf(CS buffer, "_%s._tcp.%n%.256s", srv_service, &prefix_length,
- host->name);
+ g = string_fmt_append(NULL, "_%s._tcp.%n%.256s",
+ srv_service, &prefix_length, host->name);
+ temp_fully_qualified_name = string_from_gstring(g);
ind_type = T_SRV;
/* Search for SRV records. If the fully qualified name is different to
dnssec = DS_UNK;
lookup_dnssec_authenticated = NULL;
- rc = dns_lookup_timerwrap(&dnsa, buffer, ind_type, CUSS &temp_fully_qualified_name);
+ rc = dns_lookup_timerwrap(&dnsa, temp_fully_qualified_name, ind_type,
+ CUSS &temp_fully_qualified_name);
DEBUG(D_dns)
if ((dnssec_request || dnssec_require)
{ dnssec = DS_NO; lookup_dnssec_authenticated = US"no"; }
}
- if (temp_fully_qualified_name != buffer && fully_qualified_name != NULL)
+ if (temp_fully_qualified_name != g->s && fully_qualified_name != NULL)
*fully_qualified_name = temp_fully_qualified_name + prefix_length;
/* On DNS failures, we give the "try again" error unless the domain is
rr;
rr = dns_next_rr(&dnsa, &dnss, RESET_NEXT)) if (rr->type == ind_type)
{
- int precedence;
- int weight = 0; /* For SRV records */
+ int precedence, weight;
int port = PORT_NONE;
const uschar * s = rr->data; /* MUST be unsigned for GETSHORT */
uschar data[256];
if (ind_type == T_MX)
weight = random_number(500);
-
- /* SRV records are specified with a port and a weight. The weight is used
- in a special algorithm. However, to start with, we just use it to order the
- records of equal priority (precedence). */
-
else
{
+ /* SRV records are specified with a port and a weight. The weight is used
+ in a special algorithm. However, to start with, we just use it to order the
+ records of equal priority (precedence). */
GETSHORT(weight, s);
GETSHORT(port, s);
}
never know what junk might get into the DNS (and this case has been seen on
more than one occasion). */
- if (last != NULL) /* This is not the first record */
+ if (last) /* This is not the first record */
{
host_item *prev = NULL;
for (h = host; h != last->next; prev = h, h = h->next)
- {
if (strcmpic(h->name, data) == 0)
{
DEBUG(D_host_lookup)
debug_printf("discarded duplicate host %s (MX=%d)\n", data,
- (precedence > h->mx)? precedence : h->mx);
+ precedence > h->mx ? precedence : h->mx);
if (precedence >= h->mx) goto NEXT_MX_RR; /* Skip greater precedence */
if (h == host) /* Override first item */
{
if (h == last) last = prev;
break;
}
- }
}
/* If this is the first MX or SRV record, put the data into the existing host
host->dnssec = dnssec;
last = host;
}
+ else
/* Make a new host item and seek the correct insertion place */
-
- else
{
int sort_key = precedence * 1000 + weight;
host_item *next = store_get(sizeof(host_item));
host->next = next;
if (last == host) last = next;
}
+ else
/* Else scan down the items we have inserted as part of this exercise;
don't go further. */
-
- else
{
for (h = host; h != last; h = h->next)
- {
if (sort_key < h->next->sort_key)
{
next->next = h->next;
h->next = next;
break;
}
- }
/* Join on after the last host item that's part of this
processing if we haven't stopped sooner. */
for (ppptr = pptr, hhh = h;
hhh != hh;
- ppptr = &(hhh->next), hhh = hhh->next)
- {
- if (hhh->sort_key >= randomizer) break;
- }
+ ppptr = &hhh->next, hhh = hhh->next)
+ if (hhh->sort_key >= randomizer)
+ break;
/* hhh now points to the host that should go first; ppptr points to the
place that points to it. Unfortunately, if the start of the minilist is
hhh->next = temp.next;
h->next = hhh;
}
-
else
{
hhh->next = h; /* The rest of the chain follows it */
else if (Ustrcmp(buffer, "require_dnssec") == 0) require_dnssec = TRUE;
else if (Ustrcmp(buffer, "no_require_dnssec") == 0) require_dnssec = FALSE;
else if (Ustrcmp(buffer, "test_harness") == 0)
- running_in_test_harness = !running_in_test_harness;
+ f.running_in_test_harness = !f.running_in_test_harness;
else if (Ustrcmp(buffer, "ipv6") == 0) disable_ipv6 = !disable_ipv6;
else if (Ustrcmp(buffer, "res_debug") == 0)
{
git://git.exim.org / exim.git / blobdiff