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Remove ability to compile without IPv6 support.

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This was the source of a large number of #ifdefs, originally
included for use with old embedded libc versions. I'm
sure no-one wants or needs IPv6-free code these days, so this
is a move towards more maintainable code.
This commit is contained in:
Simon Kelley
2018-10-23 22:10:17 +01:00
parent a220545c42
commit ee8750451b
22 changed files with 56 additions and 418 deletions
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31
src/cache.c
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@@ -410,11 +410,8 @@ static struct crec *cache_scan_free(char *name, struct all_addr *addr, time_t no
else
{
int i;
#ifdef HAVE_IPV6
int addrlen = (flags & F_IPV6) ? IN6ADDRSZ : INADDRSZ;
#else
int addrlen = INADDRSZ;
#endif
for (i = 0; i < hash_size; i++)
for (crecp = hash_table[i], up = &hash_table[i];
crecp && ((crecp->flags & F_REVERSE) || !(crecp->flags & F_IMMORTAL));
@@ -512,11 +509,9 @@ static struct crec *really_insert(char *name, struct all_addr *addr,
if ((flags & F_IPV4) && (new->flags & F_IPV4) &&
new->addr.addr.addr.addr4.s_addr == addr->addr.addr4.s_addr)
return new;
#ifdef HAVE_IPV6
else if ((flags & F_IPV6) && (new->flags & F_IPV6) &&
IN6_ARE_ADDR_EQUAL(&new->addr.addr.addr.addr6, &addr->addr.addr6))
return new;
#endif
}
insert_error = 1;
@@ -938,11 +933,7 @@ struct crec *cache_find_by_addr(struct crec *crecp, struct all_addr *addr,
time_t now, unsigned int prot)
{
struct crec *ans;
#ifdef HAVE_IPV6
int addrlen = (prot == F_IPV6) ? IN6ADDRSZ : INADDRSZ;
#else
int addrlen = INADDRSZ;
#endif
if (crecp) /* iterating */
ans = crecp->next;
@@ -1171,14 +1162,12 @@ int read_hostsfile(char *filename, unsigned int index, int cache_size, struct cr
addrlen = INADDRSZ;
domain_suffix = get_domain(addr.addr.addr4);
}
#ifdef HAVE_IPV6
else if (inet_pton(AF_INET6, token, &addr) > 0)
{
flags = F_HOSTS | F_IMMORTAL | F_FORWARD | F_REVERSE | F_IPV6;
addrlen = IN6ADDRSZ;
domain_suffix = get_domain6(&addr.addr.addr6);
}
#endif
else
{
my_syslog(LOG_ERR, _("bad address at %s line %d"), filename, lineno);
@@ -1343,7 +1332,7 @@ void cache_reload(void)
cache->flags = F_HOSTS | F_IMMORTAL | F_FORWARD | F_REVERSE | F_IPV4 | F_NAMEP | F_CONFIG;
add_hosts_entry(cache, (struct all_addr *)&hr->addr, INADDRSZ, SRC_CONFIG, (struct crec **)daemon->packet, revhashsz);
}
#ifdef HAVE_IPV6
if (!IN6_IS_ADDR_UNSPECIFIED(&hr->addr6) &&
(cache = whine_malloc(SIZEOF_POINTER_CREC)))
{
@@ -1352,7 +1341,6 @@ void cache_reload(void)
cache->flags = F_HOSTS | F_IMMORTAL | F_FORWARD | F_REVERSE | F_IPV6 | F_NAMEP | F_CONFIG;
add_hosts_entry(cache, (struct all_addr *)&hr->addr6, IN6ADDRSZ, SRC_CONFIG, (struct crec **)daemon->packet, revhashsz);
}
#endif
}
if (option_bool(OPT_NO_HOSTS) && !daemon->addn_hosts)
@@ -1451,13 +1439,11 @@ void cache_add_dhcp_entry(char *host_name, int prot,
int in_hosts = 0;
size_t addrlen = sizeof(struct in_addr);
#ifdef HAVE_IPV6
if (prot == AF_INET6)
{
flags = F_IPV6;
addrlen = sizeof(struct in6_addr);
}
#endif
inet_ntop(prot, host_address, daemon->addrbuff, ADDRSTRLEN);
@@ -1810,10 +1796,8 @@ void dump_cache(time_t now)
a = daemon->addrbuff;
if (cache->flags & F_IPV4)
inet_ntop(AF_INET, &cache->addr.addr, a, ADDRSTRLEN);
#ifdef HAVE_IPV6
else if (cache->flags & F_IPV6)
inet_ntop(AF_INET6, &cache->addr.addr, a, ADDRSTRLEN);
#endif
}
if (cache->flags & F_IPV4)
@@ -1954,14 +1938,9 @@ void log_query(unsigned int flags, char *name, struct all_addr *addr, char *arg)
sprintf(daemon->addrbuff, "%u", rcode);
}
else
{
#ifdef HAVE_IPV6
inet_ntop(flags & F_IPV4 ? AF_INET : AF_INET6,
addr, daemon->addrbuff, ADDRSTRLEN);
#else
strncpy(daemon->addrbuff, inet_ntoa(addr->addr.addr4), ADDRSTRLEN);
#endif
}
inet_ntop(flags & F_IPV4 ? AF_INET : AF_INET6,
addr, daemon->addrbuff, ADDRSTRLEN);
}
else
dest = arg;