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Simplify type casting of struct sockaddr_in.

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This commit is contained in:
Hiroki Sato 2016-12-21 07:05:34 +00:00
parent e46b059e46
commit bbe85c3834
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=310352
1 changed files with 13 additions and 13 deletions
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26
usr.sbin/syslogd/syslogd.c
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@ -128,6 +128,7 @@ static const char include_ext[] = ".conf";
#define sstosa(ss) ((struct sockaddr *)(ss))
#define satosin6(sa) ((struct sockaddr_in6 *)(void *)(sa))
#define sstosin(ss) ((struct sockaddr_in *)(ss))
#define satosin(sa) ((struct sockaddr_in *)(void *)(sa))
#define s6_addr32 __u6_addr.__u6_addr32
#define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \
@ -2368,7 +2369,7 @@ allowaddr(char *s)
struct servent *se;
int masklen = -1;
struct addrinfo hints, *res;
struct in_addr *addrp, *maskp;
in_addr_t *addrp, *maskp;
#ifdef INET6
int i;
u_int32_t *addr6p, *mask6p;
@ -2434,28 +2435,27 @@ allowaddr(char *s)
ap->a_mask.ss_family = res->ai_family;
if (res->ai_family == AF_INET) {
ap->a_mask.ss_len = sizeof(struct sockaddr_in);
maskp = &((struct sockaddr_in *)&ap->a_mask)->sin_addr;
addrp = &((struct sockaddr_in *)&ap->a_addr)->sin_addr;
maskp = &sstosin(&ap->a_mask)->sin_addr.s_addr;
addrp = &sstosin(&ap->a_addr)->sin_addr.s_addr;
if (masklen < 0) {
/* use default netmask */
if (IN_CLASSA(ntohl(addrp->s_addr)))
maskp->s_addr = htonl(IN_CLASSA_NET);
else if (IN_CLASSB(ntohl(addrp->s_addr)))
maskp->s_addr = htonl(IN_CLASSB_NET);
if (IN_CLASSA(ntohl(*addrp)))
*maskp = htonl(IN_CLASSA_NET);
else if (IN_CLASSB(ntohl(*addrp)))
*maskp = htonl(IN_CLASSB_NET);
else
maskp->s_addr = htonl(IN_CLASSC_NET);
*maskp = htonl(IN_CLASSC_NET);
} else if (masklen == 0) {
*maskp = 0;
} else if (masklen <= 32) {
/* convert masklen to netmask */
if (masklen == 0)
maskp->s_addr = 0;
else
maskp->s_addr = htonl(~((1 << (32 - masklen)) - 1));
*maskp = htonl(~((1 << (32 - masklen)) - 1));
} else {
freeaddrinfo(res);
return (-1);
}
/* Lose any host bits in the network number. */
addrp->s_addr &= maskp->s_addr;
*addrp &= *maskp;
}
#ifdef INET6
else if (res->ai_family == AF_INET6 && masklen <= 128) {