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Diffstat (limited to 'src/network')
-rw-r--r--src/network/lookup_name.c47
1 files changed, 32 insertions, 15 deletions
diff --git a/src/network/lookup_name.c b/src/network/lookup_name.c
index a1851f1f..0e6db9ef 100644
--- a/src/network/lookup_name.c
+++ b/src/network/lookup_name.c
@@ -355,36 +355,53 @@ int __lookup_name(struct address buf[static MAXADDRS], char canon[static 256], c
* excessive runtime and code size cost and dubious benefit.
* So far the label/precedence table cannot be customized. */
for (i=0; i<cnt; i++) {
+ int family = buf[i].family;
int key = 0;
- struct sockaddr_in6 sa, da = {
+ struct sockaddr_in6 sa6 = { 0 }, da6 = {
.sin6_family = AF_INET6,
.sin6_scope_id = buf[i].scopeid,
.sin6_port = 65535
};
- if (buf[i].family == AF_INET6) {
- memcpy(da.sin6_addr.s6_addr, buf[i].addr, 16);
+ struct sockaddr_in sa4 = { 0 }, da4 = {
+ .sin_family = AF_INET,
+ .sin_port = 65535
+ };
+ void *sa, *da;
+ socklen_t salen, dalen;
+ if (family == AF_INET6) {
+ memcpy(da6.sin6_addr.s6_addr, buf[i].addr, 16);
+ da = &da6; dalen = sizeof da6;
+ sa = &sa6; salen = sizeof sa6;
} else {
- memcpy(da.sin6_addr.s6_addr,
+ memcpy(sa6.sin6_addr.s6_addr,
+ "\0\0\0\0\0\0\0\0\0\0\xff\xff", 12);
+ memcpy(da6.sin6_addr.s6_addr+12, buf[i].addr, 4);
+ memcpy(da6.sin6_addr.s6_addr,
"\0\0\0\0\0\0\0\0\0\0\xff\xff", 12);
- memcpy(da.sin6_addr.s6_addr+12, buf[i].addr, 4);
+ memcpy(da6.sin6_addr.s6_addr+12, buf[i].addr, 4);
+ memcpy(&da4.sin_addr, buf[i].addr, 4);
+ da = &da4; dalen = sizeof da4;
+ sa = &sa4; salen = sizeof sa4;
}
- const struct policy *dpolicy = policyof(&da.sin6_addr);
- int dscope = scopeof(&da.sin6_addr);
+ const struct policy *dpolicy = policyof(&da6.sin6_addr);
+ int dscope = scopeof(&da6.sin6_addr);
int dlabel = dpolicy->label;
int dprec = dpolicy->prec;
int prefixlen = 0;
- int fd = socket(AF_INET6, SOCK_DGRAM|SOCK_CLOEXEC, IPPROTO_UDP);
+ int fd = socket(family, SOCK_DGRAM|SOCK_CLOEXEC, IPPROTO_UDP);
if (fd >= 0) {
- if (!connect(fd, (void *)&da, sizeof da)) {
+ if (!connect(fd, da, dalen)) {
key |= DAS_USABLE;
- if (!getsockname(fd, (void *)&sa,
- &(socklen_t){sizeof sa})) {
- if (dscope == scopeof(&sa.sin6_addr))
+ if (!getsockname(fd, sa, &salen)) {
+ if (family == AF_INET) memcpy(
+ &sa6.sin6_addr.s6_addr+12,
+ &sa4.sin_addr, 4);
+ if (dscope == scopeof(&sa6.sin6_addr))
key |= DAS_MATCHINGSCOPE;
- if (dlabel == labelof(&sa.sin6_addr))
+ if (dlabel == labelof(&sa6.sin6_addr))
key |= DAS_MATCHINGLABEL;
- prefixlen = prefixmatch(&sa.sin6_addr,
- &da.sin6_addr);
+ prefixlen = prefixmatch(&sa6.sin6_addr,
+ &da6.sin6_addr);
}
}
close(fd);