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add support for rpc IPv6 (rpc/udp/46 ...)

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Submitted by: Jean-Luc Richier <Jean-Luc.Richier@imag.fr>
This commit is contained in:
Alfred Perlstein 2002-07-15 19:09:33 +00:00
parent 45ea00ee87
commit d14ca883cb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=100127
2 changed files with 103 additions and 33 deletions
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5
usr.sbin/inetd/inetd.8
View File

@ -294,12 +294,15 @@ via a wildcard
.Dv AF_INET6
socket.
Rpc based services
(for which only IPv4 is supported at this time)
are specified with the
.Dq rpc/tcp
or
.Dq rpc/udp
service type.
One can use specify IPv4 and/or IPv6 with the 4, 6 or 46 suffix, for example
.Dq rpc/tcp6
or
.Dq rpc/udp46 .
TCPMUX services must use
.Dq tcp ,
.Dq tcp4 ,

131
usr.sbin/inetd/inetd.c
View File

@ -97,7 +97,7 @@ __FBSDID("$FreeBSD$");
* For RPC services
* service name/version must be in /etc/rpc
* socket type stream/dgram/raw/rdm/seqpacket
* protocol rpc/tcp, rpc/udp
* protocol rpc/tcp[4][6], rpc/udp[4][6]
* wait/nowait single-threaded/multi-threaded
* user user to run daemon as
* server program full path name
@ -267,6 +267,8 @@ extern struct biltin biltins[];
const char *CONFIG = _PATH_INETDCONF;
const char *pid_file = _PATH_INETDPID;
struct netconfig *udpconf, *tcpconf, *udp6conf, *tcp6conf;
int
getvalue(const char *arg, int *value, const char *whine)
{
@ -451,6 +453,26 @@ main(int argc, char **argv)
syslog(LOG_WARNING, "%s: %m", pid_file);
}
}
if (!no_v4bind) {
udpconf = getnetconfigent("udp");
tcpconf = getnetconfigent("tcp");
if (udpconf == NULL || tcpconf == NULL) {
syslog(LOG_ERR, "unknown rpc/udp or rpc/tpc");
exit(EX_USAGE);
}
}
#ifdef INET6
if (!no_v6bind) {
udp6conf = getnetconfigent("udp6");
tcp6conf = getnetconfigent("tcp6");
if (udp6conf == NULL || tcp6conf == NULL) {
syslog(LOG_ERR, "unknown rpc/udp6 or rpc/tpc6");
exit(EX_USAGE);
}
}
#endif
sa.sa_flags = 0;
sigemptyset(&sa.sa_mask);
sigaddset(&sa.sa_mask, SIGALRM);
@ -887,6 +909,7 @@ config(void)
{
struct servtab *sep, *new, **sepp;
long omask;
int new_nomapped;
if (!setconfig()) {
syslog(LOG_ERR, "%s: %m", CONFIG);
@ -916,9 +939,11 @@ config(void)
continue;
}
#endif
new_nomapped = new->se_nomapped;
for (sep = servtab; sep; sep = sep->se_next)
if (strcmp(sep->se_service, new->se_service) == 0 &&
strcmp(sep->se_proto, new->se_proto) == 0 &&
sep->se_rpc == new->se_rpc &&
sep->se_socktype == new->se_socktype &&
sep->se_family == new->se_family)
break;
@ -928,7 +953,9 @@ config(void)
#define SWAP(t,a, b) { t c = a; a = b; b = c; }
omask = sigblock(SIGBLOCK);
if (sep->se_nomapped != new->se_nomapped) {
sep->se_nomapped = new->se_nomapped;
/* for rpc keep old nommaped till unregister */
if (!sep->se_rpc)
sep->se_nomapped = new->se_nomapped;
sep->se_reset = 1;
}
/* copy over outstanding child pids */
@ -1040,7 +1067,8 @@ config(void)
sep->se_fd = -1;
continue;
}
if (rpc->r_number != sep->se_rpc_prog) {
if (sep->se_reset != 0 ||
rpc->r_number != sep->se_rpc_prog) {
if (sep->se_rpc_prog)
unregisterrpc(sep);
sep->se_rpc_prog = rpc->r_number;
@ -1048,7 +1076,9 @@ config(void)
(void) close(sep->se_fd);
sep->se_fd = -1;
}
sep->se_nomapped = new_nomapped;
}
sep->se_reset = 0;
if (sep->se_fd == -1)
setup(sep);
}
@ -1082,21 +1112,49 @@ unregisterrpc(struct servtab *sep)
u_int i;
struct servtab *sepp;
long omask;
struct netconfig *netid4, *netid6;
omask = sigblock(SIGBLOCK);
netid4 = sep->se_socktype == SOCK_DGRAM ? udpconf : tcpconf;
netid6 = sep->se_socktype == SOCK_DGRAM ? udp6conf : tcp6conf;
if (sep->se_family == AF_INET)
netid6 = NULL;
else if (sep->se_nomapped)
netid4 = NULL;
/*
* Conflict if same prog and protocol - In that case one should look
* to versions, but it is not interesting: having separate servers for
* different versions does not work well.
* Therefore one do not unregister if there is a conflict.
* There is also transport conflict if destroying INET when INET46
* exists, or destroying INET46 when INET exists
*/
for (sepp = servtab; sepp; sepp = sepp->se_next) {
if (sepp == sep)
continue;
if (sep->se_checked == 0 ||
if (sepp->se_checked == 0 ||
!sepp->se_rpc ||
strcmp(sep->se_proto, sepp->se_proto) != 0 ||
sep->se_rpc_prog != sepp->se_rpc_prog)
continue;
return;
if (sepp->se_family == AF_INET)
netid4 = NULL;
if (sepp->se_family == AF_INET6) {
netid6 = NULL;
if (!sep->se_nomapped)
netid4 = NULL;
}
if (netid4 == NULL && netid6 == NULL)
return;
}
if (debug)
print_service("UNREG", sep);
for (i = sep->se_rpc_lowvers; i <= sep->se_rpc_highvers; i++)
pmap_unset(sep->se_rpc_prog, i);
for (i = sep->se_rpc_lowvers; i <= sep->se_rpc_highvers; i++) {
if (netid4)
rpcb_unset(sep->se_rpc_prog, i, netid4);
if (netid6)
rpcb_unset(sep->se_rpc_prog, i, netid6);
}
if (sep->se_fd != -1)
(void) close(sep->se_fd);
sep->se_fd = -1;
@ -1207,15 +1265,10 @@ setsockopt(fd, SOL_SOCKET, opt, (char *)&on, sizeof (on))
if (sep->se_rpc) {
u_int i;
socklen_t len = sep->se_ctrladdr_size;
struct netconfig *netid, *netid2 = NULL;
struct sockaddr_in sock;
struct netbuf nbuf, nbuf2;
if (sep->se_family != AF_INET) {
syslog(LOG_ERR,
"%s/%s: unsupported address family for rpc",
sep->se_service, sep->se_proto);
(void) close(sep->se_fd);
sep->se_fd = -1;
return;
}
if (getsockname(sep->se_fd,
(struct sockaddr*)&sep->se_ctrladdr, &len) < 0){
syslog(LOG_ERR, "%s/%s: getsockname: %m",
@ -1224,14 +1277,30 @@ setsockopt(fd, SOL_SOCKET, opt, (char *)&on, sizeof (on))
sep->se_fd = -1;
return;
}
nbuf.buf = &sep->se_ctrladdr;
nbuf.len = sep->se_ctrladdr.sa_len;
if (sep->se_family == AF_INET)
netid = sep->se_socktype==SOCK_DGRAM? udpconf:tcpconf;
else {
netid = sep->se_socktype==SOCK_DGRAM? udp6conf:tcp6conf;
if (!sep->se_nomapped) { /* INET and INET6 */
netid2 = netid==udp6conf? udpconf:tcpconf;
memset(&sock, 0, sizeof sock); /* ADDR_ANY */
nbuf2.buf = &sock;
nbuf2.len = sock.sin_len = sizeof sock;
sock.sin_family = AF_INET;
sock.sin_port = sep->se_ctrladdr6.sin6_port;
}
}
if (debug)
print_service("REG ", sep);
for (i = sep->se_rpc_lowvers; i <= sep->se_rpc_highvers; i++) {
pmap_unset(sep->se_rpc_prog, i);
pmap_set(sep->se_rpc_prog, i,
(sep->se_socktype == SOCK_DGRAM)
? IPPROTO_UDP : IPPROTO_TCP,
ntohs(sep->se_ctrladdr4.sin_port));
rpcb_unset(sep->se_rpc_prog, i, netid);
rpcb_set(sep->se_rpc_prog, i, netid, &nbuf);
if (netid2) {
rpcb_unset(sep->se_rpc_prog, i, netid2);
rpcb_set(sep->se_rpc_prog, i, netid2, &nbuf2);
}
}
}
if (sep->se_socktype == SOCK_STREAM)
@ -1600,12 +1669,6 @@ getconfigent(void)
sep->se_proto = newstr(arg);
}
if (strncmp(sep->se_proto, "rpc/", 4) == 0) {
if (no_v4bind != 0) {
syslog(LOG_NOTICE, "IPv4 bind is ignored for %s",
sep->se_service);
freeconfig(sep);
goto more;
}
memmove(sep->se_proto, sep->se_proto + 4,
strlen(sep->se_proto) + 1 - 4);
sep->se_rpc = 1;
@ -1641,12 +1704,6 @@ getconfigent(void)
while (isdigit(sep->se_proto[strlen(sep->se_proto) - 1])) {
#ifdef INET6
if (sep->se_proto[strlen(sep->se_proto) - 1] == '6') {
if (no_v6bind != 0) {
syslog(LOG_NOTICE, "IPv6 bind is ignored for %s",
sep->se_service);
freeconfig(sep);
goto more;
}
sep->se_proto[strlen(sep->se_proto) - 1] = '\0';
v6bind = 1;
continue;
@ -1666,6 +1723,16 @@ getconfigent(void)
sep->se_family = AF_UNIX;
} else
#ifdef INET6
if (v6bind != 0 && no_v6bind != 0) {
syslog(LOG_INFO, "IPv6 bind is ignored for %s",
sep->se_service);
if (v4bind && no_v4bind == 0)
v6bind = 0;
else {
freeconfig(sep);
goto more;
}
}
if (v6bind != 0) {
sep->se_family = AF_INET6;
if (v4bind == 0 || no_v4bind != 0)