/* -*-c-*-
- *
- * $Id$
*
* Admin interface for configuration
*
* (c) 2001 Straylight/Edgeware
*/
-/*----- Licensing notice --------------------------------------------------*
+/*----- Licensing notice --------------------------------------------------*
*
* This file is part of Trivial IP Encryption (TrIPE).
*
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
- *
+ *
* TrIPE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
+ *
* You should have received a copy of the GNU General Public License
* along with TrIPE; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
{ 'x', T_KEYEXCH, "key exchange" },
{ 'm', T_KEYMGMT, "key management" },
{ 'l', T_CHAL, "challenge management" },
+ { 'v', T_PRIVSEP, "privilege separation" },
{ 'p', T_PACKET, "packet contents" },
{ 'c', T_CRYPTO, "crypto details" },
{ 'A', T_ALL, "all of the above" },
#define F_DAEMON 1u
#define F_INIT 2u
+#define F_FOREGROUND 4u
#define T_RESOLVE SEC(30)
#define T_PING SEC(5)
*
* Returns: ---
*
- * Use: Main message token formatting driver.
+ * Use: Main message token formatting driver. The arguments are
+ * interleaved formatting tokens and their parameters, finally
+ * terminated by an entry @A_END@.
+ *
+ * Tokens recognized:
+ *
+ * * "*..." ... -- pretokenized @dstr_putf@-like string
+ *
+ * * "?ADDR" SOCKADDR -- a socket address, to be converted
+ *
+ * * "?B64" BUFFER SIZE -- binary data to be base64-encoded
+ *
+ * * "?TOKENS" VECTOR -- null-terminated vector of tokens
+ *
+ * * "?PEER" PEER -- peer's name
+ *
+ * * "?ERRNO" ERRNO -- system error code
+ *
+ * * "[!]..." ... -- @dstr_putf@-like string as single token
*/
-static void a_vformat(dstr *d, const char *fmt, va_list ap)
+void a_vformat(dstr *d, const char *fmt, va_list ap)
{
dstr dd = DSTR_INIT;
while (fmt) {
if (*fmt == '*') {
- dstr_putc(d, ' ');
+ if (d->len) dstr_putc(d, ' ');
dstr_vputf(d, fmt + 1, &ap);
} else if (*fmt == '?') {
if (strcmp(fmt, "?ADDR") == 0) {
{
admin *a, *aa;
dstr d = DSTR_INIT;
-
+
if (!(flags & F_INIT))
return;
dstr_puts(&d, status);
void a_quit(void)
{
- peer *p;
-
close(sock.fd);
unlink(sockname);
- while ((p = p_first()) != 0)
- p_destroy(p);
+ FOREACH_PEER(p, { p_destroy(p); });
+ ps_quit();
exit(0);
}
case 'h': t *= 60;
case 'm': t *= 60;
case 's': if (q[1] != 0)
- default: t = -1;
+ default: t = -1;
case 0: break;
}
- return (t);
+ return (t);
}
/* --- @a_findpeer@ --- *
sel_rmtimer(&r->t);
xfree(r->addr);
a_bgrelease(&r->bg);
-}
+}
/* --- @a_restimer@ --- *
*
r->addr = 0;
r->func = func;
if (mystrieq(av[i], "inet")) i++;
- if (ac - i != 2) {
- a_fail(a, "bad-addr-syntax", "[inet] ADDRESS PORT", A_END);
+ if (ac - i != 1 && ac - i != 2) {
+ a_fail(a, "bad-addr-syntax", "[inet] ADDRESS [PORT]", A_END);
goto fail;
}
r->sa.sin.sin_family = AF_INET;
r->sasz = sizeof(r->sa.sin);
r->addr = xstrdup(av[i]);
- pt = strtoul(av[i + 1], &p, 0);
- if (*p) {
- struct servent *s = getservbyname(av[i + 1], "udp");
- if (!s) {
- a_fail(a, "unknown-service", "%s", av[i + 1], A_END);
- goto fail;
+ if (!av[i + 1])
+ pt = TRIPE_PORT;
+ else {
+ pt = strtoul(av[i + 1], &p, 0);
+ if (*p) {
+ struct servent *s = getservbyname(av[i + 1], "udp");
+ if (!s) {
+ a_fail(a, "unknown-service", "%s", av[i + 1], A_END);
+ goto fail;
+ }
+ pt = ntohs(s->s_port);
}
- pt = ntohs(s->s_port);
}
if (pt == 0 || pt >= 65536) {
a_fail(a, "invalid-port", "%lu", pt, A_END);
a->seq, BGTAG(r), r->addr); )
/* --- If the name is numeric, do it the easy way --- */
-
+
if (inet_aton(av[i], &r->sa.sin.sin_addr)) {
T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); )
func(r, ARES_OK);
if (rc == ARES_OK) {
add->peer.sasz = add->r.sasz;
add->peer.sa = add->r.sa;
- if (p_find(add->peer.name))
+ if (p_findbyaddr(&add->r.sa))
+ a_bgfail(&add->r.bg, "peer-addr-exists", "?ADDR", &add->r.sa, A_END);
+ else if (p_find(add->peer.name))
a_bgfail(&add->r.bg, "peer-exists", "%s", add->peer.name, A_END);
else if (!p_create(&add->peer))
a_bgfail(&add->r.bg, "peer-create-fail", "%s", add->peer.name, A_END);
a_bgok(&add->r.bg);
}
+ if (add->peer.tag) xfree(add->peer.tag);
xfree(add->peer.name);
}
add = xmalloc(sizeof(*add));
add->peer.name = 0;
+ add->peer.tag = 0;
add->peer.t_ka = 0;
add->peer.tops = tun_default;
+ add->peer.f = 0;
/* --- Parse options --- */
}
})
OPTTIME("-keepalive", t, { add->peer.t_ka = t; })
+ OPT("-cork", { add->peer.f |= KXF_CORK; })
+ OPTARG("-key", arg, {
+ if (add->peer.tag)
+ xfree(add->peer.tag);
+ add->peer.tag = xstrdup(arg);
+ })
+ OPT("-mobile", { add->peer.f |= PSF_MOBILE; })
});
/* --- Make sure someone's not got there already --- */
- if (!*av)
+ if (!av[0] || !av[1])
goto bad_syntax;
if (p_find(*av)) {
a_fail(a, "peer-exists", "%s", *av, A_END);
a_fail(a, "bad-syntax", "add", "[OPTIONS] PEER ADDR ...", A_END);
fail:
if (add->peer.name) xfree(add->peer.name);
+ if (add->peer.tag) xfree(add->peer.tag);
xfree(add);
return;
}
a_bgrelease(&pg->bg);
}
return;
-
+
bad_syntax:
a_fail(a, "bad-syntax", "%s", cmd, "[OPTIONS] PEER", cmd, A_END);
fail:
}
a_fail(a, "bad-%s-option", what, "%c", *p, A_END);
return (0);
- tropt_ok:;
+ tropt_ok:;
break;
}
p++;
a_notify("DAEMON", A_END);
if (a_stdin)
a_destroy(a_stdin);
- if (u_daemon())
+ if (daemonize())
a_fail(a, "daemon-error", "?ERRNO", A_END);
else {
flags |= F_DAEMON;
}
}
-static void acmd_list(admin *a, unsigned ac, char *av[])
+static void acmd_algs(admin *a, unsigned ac, char *av[])
{
- peer *p;
+ a_info(a,
+ "kx-group=%s", gg->ops->name,
+ "kx-group-order-bits=%lu", (unsigned long)mp_bits(gg->r),
+ "kx-group-elt-bits=%lu", (unsigned long)gg->nbits,
+ A_END);
+ a_info(a,
+ "hash=%s", algs.h->name,
+ "mgf=%s", algs.mgf->name,
+ "hash-sz=%lu", (unsigned long)algs.h->hashsz,
+ A_END);
+ a_info(a,
+ "cipher=%s", algs.c->name,
+ "cipher-keysz=%lu", (unsigned long)algs.cksz,
+ "cipher-blksz=%lu", (unsigned long)algs.c->blksz,
+ A_END);
+ a_info(a,
+ "cipher-data-limit=%lu", (unsigned long)algs.expsz,
+ A_END);
+ a_info(a,
+ "mac=%s", algs.m->name,
+ "mac-keysz=%lu", (unsigned long)algs.mksz,
+ "mac-tagsz=%lu", (unsigned long)algs.tagsz,
+ A_END);
+ a_ok(a);
+}
- for (p = p_first(); p; p = p_next(p))
- a_info(a, "%s", p_name(p), A_END);
+static void acmd_list(admin *a, unsigned ac, char *av[])
+{
+ FOREACH_PEER(p, { a_info(a, "%s", p_name(p), A_END); });
a_ok(a);
}
a_notify("NEWIFNAME", "?PEER", p, "%s", p_ifname(p), "%s", av[1], A_END);
p_setifname(p, av[1]);
a_ok(a);
- }
+ }
}
static void acmd_getchal(admin *a, unsigned ac, char *av[])
if ((p = a_findpeer(a, av[0])) != 0) {
ps = p_spec(p);
a_info(a, "tunnel=%s", ps->tops->name, A_END);
+ a_info(a, "key=%s", p_tag(p), A_END);
a_info(a, "keepalive=%lu", ps->t_ka, A_END);
a_ok(a);
}
"ip-bytes-in=%lu", st->sz_ipin,
A_END);
a_info(a,
- "ip-packets-out=%lu", st->n_ipout,
+ "ip-packets-out=%lu", st->n_ipout,
"ip-bytes-out=%lu", st->sz_ipout,
A_END);
a_info(a, "rejected-packets=%lu", st->n_reject, A_END);
static const acmd acmdtab[] = {
{ "add", "[OPTIONS] PEER ADDR ...", 2, 0xffff, acmd_add },
{ "addr", "PEER", 1, 1, acmd_addr },
+ { "algs", 0, 0, 0, acmd_algs },
{ "bgcancel", "TAG", 1, 1, acmd_bgcancel },
{ "checkchal", "CHAL", 1, 1, acmd_checkchal },
{ "daemon", 0, 0, 0, acmd_daemon },
{ "tunnels", 0, 0, 0, acmd_tunnels },
{ "version", 0, 0, 0, acmd_version },
{ "warn", "MESSAGE ...", 1, 0xffff, acmd_warn },
- { "watch", "[OPTIONS]", 0, 1, acmd_watch },
+ { "watch", "[OPTIONS]", 0, 1, acmd_watch },
{ 0, 0, 0, 0, 0 }
};
for (c = acmdtab; c->name; c++) {
if (c->help)
a_info(a, "%s", c->name, "*%s", c->help, A_END);
- else
+ else
a_info(a, "%s", c->name, A_END);
}
a_ok(a);
static void a_destroypending(void)
{
- admin *a, *aa;
+ admin *a, *aa, *head;
admin_bgop *bg, *bbg;
admin_service *svc, *ssvc;
- /* --- Destroy connections marked as pending --- */
+ /* --- Destroy connections marked as pending --- *
+ *
+ * Slightly messy. Killing clients may cause others to finally die. Make
+ * sure that they can be put on the list without clobbering anything or
+ * getting lost.
+ */
- for (a = a_dead; a; a = aa) {
- aa = a->next;
- assert(a->f & AF_DEAD);
+ while (a_dead) {
+ head = a_dead;
+ a_dead = 0;
+ for (a = head; a; a = aa) {
+ aa = a->next;
+ assert(a->f & AF_DEAD);
- /* --- Report what we're doing --- */
+ /* --- Report what we're doing --- */
- T( trace(T_ADMIN, "admin: completing destruction of connection %u",
- a->seq); )
+ T( trace(T_ADMIN, "admin: completing destruction of connection %u",
+ a->seq); )
- /* --- Abort any background jobs in progress --- */
+ /* --- If this is the foreground client then shut down --- */
- for (bg = a->bg; bg; bg = bbg) {
- bbg = bg->next;
- bg->cancel(bg);
- if (bg->tag) xfree(bg->tag);
- xfree(bg);
- }
+ if (a->f & AF_FOREGROUND) {
+ T( trace(T_ADMIN, "admin: foreground client quit: shutting down"); )
+ a_warn("SERVER", "quit", "foreground-eof", A_END);
+ a_quit();
+ }
- /* --- Release services I hold, and abort pending jobs --- */
+ /* --- Abort any background jobs in progress --- */
- for (svc = a->svcs; svc; svc = ssvc) {
- ssvc = svc->next;
- a_svcrelease(svc);
- }
- a_jobtablefinal(&a->j);
+ for (bg = a->bg; bg; bg = bbg) {
+ bbg = bg->next;
+ bg->cancel(bg);
+ if (bg->tag) xfree(bg->tag);
+ xfree(bg);
+ }
- /* --- Close file descriptors and selectory --- */
+ /* --- Release services I hold, and abort pending jobs --- */
- selbuf_destroy(&a->b);
- if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd);
- close(a->w.fd);
- if (a_stdin == a) a_stdin = 0;
+ for (svc = a->svcs; svc; svc = ssvc) {
+ ssvc = svc->next;
+ a_svcrelease(svc);
+ }
+ a_jobtablefinal(&a->j);
- /* --- Done --- */
+ /* --- Close file descriptors and selectory --- */
- DESTROY(a);
- }
+ selbuf_destroy(&a->b);
+ if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd);
+ close(a->w.fd);
+ if (a_stdin == a) a_stdin = 0;
- /* --- All pending destruction completed --- */
+ /* --- Done --- */
- a_dead = 0;
+ DESTROY(a);
+ }
+ }
}
/* --- @a_destroy@ --- *
{
admin *a = vp;
const acmd *c;
- char *av[16];
+ char *av[16 + 1];
size_t ac;
TIMER;
}
return;
}
- ac = str_qsplit(p, av, 16, 0, STRF_QUOTE);
+ ac = str_qsplit(p, av, N(av) - 1, 0, STRF_QUOTE);
if (!ac)
return;
+ av[ac] = 0;
for (c = acmdtab; c->name; c++) {
if (mystrieq(av[0], c->name)) {
ac--;
if (c->argmin > ac || ac > c->argmax) {
if (!c->help)
a_fail(a, "bad-syntax", "%s", c->name, "", A_END);
- else
+ else
a_fail(a, "bad-syntax", "%s", c->name, "%s", c->help, A_END);
} else
c->func(a, ac, av + 1);
/* --- @a_init@ --- *
*
* Arguments: @const char *name@ = socket name to create
+ * @uid_t u@ = user to own the socket
+ * @gid_t g@ = group to own the socket
+ * @mode_t m@ = permissions to set on the socket
*
* Returns: ---
*
* Use: Creates the admin listening socket.
*/
-void a_init(const char *name)
+void a_init(const char *name, uid_t u, gid_t g, mode_t m)
{
int fd;
int n = 5;
struct sockaddr_un sun;
struct sigaction sa;
size_t sz;
+ mode_t omask;
/* --- Create services table --- */
/* --- Attempt to bind to the socket --- */
- umask(0077);
+ omask = umask(0077);
again:
if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno));
close(fd);
goto again;
}
- chmod(sun.sun_path, 0600);
+ if (chown(sun.sun_path, u, g)) {
+ die(EXIT_FAILURE, "failed to set socket owner: %s",
+ strerror(errno));
+ }
+ if (chmod(sun.sun_path, m)) {
+ die(EXIT_FAILURE, "failed to set socket permissions: %s",
+ strerror(errno));
+ }
+ umask(omask);
fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
if (listen(fd, 5))
die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno));
~mdw / tripe / blobdiff