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Bring in some bugfixes from NetBSD. I'm going to make a more

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extensive pass through the rpcbind code soon, but I might as well
bring these in now.

- (NetBSD util.c r1.5) Move the initialisation of `tbuf' to avoid
  a case where it could end up containing junk from the stack. This
  should address the issue in PR bin/26806.
- (NetBSD util.c r1.6) Don't `merge' AF_LOCAL addresses, fix a few
  memory leaks.

PR:		bin/26806
Submitted by:	Martin Blapp <mb@imp.ch>
Obtained from:	NetBSD
This commit is contained in:
Ian Dowse 2001-04-26 17:05:55 +00:00
parent 6263665f87
commit 05f91f8d49
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=76037
1 changed files with 37 additions and 17 deletions
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54
usr.sbin/rpcbind/util.c
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@ -147,15 +147,30 @@ addrmerge(struct netbuf *caller, char *serv_uaddr, char *clnt_uaddr,
serv_sa = (struct sockaddr *)serv_nbp->buf;
if (clnt_uaddr != NULL) {
clnt_nbp = uaddr2taddr(nconf, clnt_uaddr);
if (clnt_nbp == NULL) {
free(serv_nbp);
return NULL;
}
clnt_sa = (struct sockaddr *)clnt_nbp->buf;
if (clnt_sa->sa_family == AF_LOCAL) {
free(serv_nbp);
free(clnt_nbp);
free(clnt_sa);
return strdup(clnt_uaddr);
}
} else {
clnt_sa = (struct sockaddr *)
malloc(sizeof (struct sockaddr_storage));
memcpy(clnt_sa, clnt, clnt->sa_len);
}
if (getifaddrs(&ifp) < 0)
if (getifaddrs(&ifp) < 0) {
free(serv_nbp);
free(clnt_sa);
if (clnt_nbp != NULL)
free(clnt_nbp);
return 0;
}
/*
* Loop through all interfaces. For each interface, see if the
@ -186,15 +201,6 @@ addrmerge(struct netbuf *caller, char *serv_uaddr, char *clnt_uaddr,
ifsin = (struct sockaddr_in *)ifap->ifa_addr;
if (!bitmaskcmp(&ifsin->sin_addr, &clntsin->sin_addr,
&sinmask->sin_addr, sizeof (struct in_addr))) {
/*
* Found it.
*/
memcpy(newsin, ifap->ifa_addr,
clnt_sa->sa_len);
newsin->sin_port = servsin->sin_port;
tbuf.len = clnt_sa->sa_len;
tbuf.maxlen = sizeof (struct sockaddr_storage);
tbuf.buf = newsin;
goto found;
}
break;
@ -227,18 +233,12 @@ addrmerge(struct netbuf *caller, char *serv_uaddr, char *clnt_uaddr,
if (ifsin6->sin6_scope_id !=
realsin6->sin6_scope_id)
continue;
match:
memcpy(newsin6, ifsin6, clnt_sa->sa_len);
newsin6->sin6_port = servsin6->sin6_port;
tbuf.maxlen = sizeof (struct sockaddr_storage);
tbuf.len = clnt_sa->sa_len;
tbuf.buf = newsin6;
goto found;
}
if (!bitmaskcmp(&ifsin6->sin6_addr,
&clntsin6->sin6_addr, &sin6mask->sin6_addr,
sizeof (struct in6_addr)))
goto match;
goto found;
break;
#endif
default:
@ -268,6 +268,26 @@ addrmerge(struct netbuf *caller, char *serv_uaddr, char *clnt_uaddr,
}
ifap = bestif;
found:
switch (clnt->sa_family) {
case AF_INET:
memcpy(newsin, ifap->ifa_addr, clnt_sa->sa_len);
newsin->sin_port = servsin->sin_port;
tbuf.len = clnt_sa->sa_len;
tbuf.maxlen = sizeof (struct sockaddr_storage);
tbuf.buf = newsin;
break;
#ifdef INET6
case AF_INET6:
memcpy(newsin6, ifsin6, clnt_sa->sa_len);
newsin6->sin6_port = servsin6->sin6_port;
tbuf.maxlen = sizeof (struct sockaddr_storage);
tbuf.len = clnt_sa->sa_len;
tbuf.buf = newsin6;
break;
#endif
default:
goto freeit;
}
if (ifap != NULL)
ret = taddr2uaddr(nconf, &tbuf);
freeit: