5 * Admin interface for configuration
7 * (c) 2001 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of Trivial IP Encryption (TrIPE).
14 * TrIPE is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * TrIPE is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with TrIPE; if not, write to the Free Software Foundation,
26 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
29 /*----- Header files ------------------------------------------------------*/
33 /*----- Global variables --------------------------------------------------*/
37 const trace_opt tr_opts[] = {
38 { 't', T_TUNNEL, "tunnel events" },
39 { 'r', T_PEER, "peer events" },
40 { 'a', T_ADMIN, "admin interface" },
41 { 's', T_KEYSET, "symmetric keyset management" },
42 { 'x', T_KEYEXCH, "key exchange" },
43 { 'm', T_KEYMGMT, "key management" },
44 { 'l', T_CHAL, "challenge management" },
45 { 'p', T_PACKET, "packet contents" },
46 { 'c', T_CRYPTO, "crypto details" },
47 { 'A', T_ALL, "all of the above" },
51 unsigned tr_flags = 0;
54 static const trace_opt w_opts[] = {
55 { 't', AF_TRACE, "trace messages" },
56 { 'n', AF_NOTE, "asynchronous notifications" },
57 { 'w', AF_WARN, "warnings" },
58 { 'A', AF_ALLMSGS, "all of the above" },
62 /*----- Static variables --------------------------------------------------*/
66 static const char *sockname;
67 static unsigned flags = 0;
68 static admin *a_stdin = 0;
69 static sig s_term, s_int, s_hup;
74 #define T_RESOLVE SEC(30)
77 static void a_destroy(admin */*a*/);
78 static void a_lock(admin */*a*/);
79 static void a_unlock(admin */*a*/);
81 #define BOOL(x) ((x) ? "t" : "nil")
83 /*----- Output functions --------------------------------------------------*/
85 /* --- @trywrite@ --- *
87 * Arguments: @admin *a@ = pointer to an admin block
88 * @const char *p@ = pointer to buffer to write
89 * @size_t sz@ = size of data to write
91 * Returns: The number of bytes written, or less than zero on error.
93 * Use: Attempts to write data to a client.
96 static ssize_t trywrite(admin *a, const char *p, size_t sz)
103 n = write(a->w.fd, p, sz);
113 if (errno != EAGAIN && errno != EWOULDBLOCK) {
115 a_warn("ADMIN client-read-error -- %s", strerror(errno));
122 /* --- @doqueue@ -- *
124 * Arguments: @oqueue *q@ = pointer to output queue
125 * @const char *p@ = pointer to buffer to write
126 * @size_t sz@ = size of buffer
128 * Returns: Nonzero if the queue was previously empty.
130 * Use: Queues data to be written later.
133 static int doqueue(oqueue *q, const char *p, size_t sz)
142 else if (o->p_in < o->buf + OBUFSZ)
146 o = xmalloc(sizeof(obuf));
148 o->p_in = o->p_out = o->buf;
156 n = o->buf + OBUFSZ - o->p_in;
159 memcpy(o->p_in, p, n);
168 /* --- @dosend@ --- *
170 * Arguemnts: @admin *a@ = pointer to an admin block
171 * @const char *p@ = pointer to buffer to write
172 * @size_t sz@ = size of data to write
176 * Use: Sends data to an admin client.
179 static void dosend(admin *a, const char *p, size_t sz)
186 if ((n = trywrite(a, p, sz)) < 0)
193 if (doqueue(&a->out, p, sz))
197 /* --- @a_flush@ --- *
199 * Arguments: @int fd@ = file descriptor
200 * @unsigned mode@ = what's happening
201 * @void *v@ = pointer to my admin block
205 * Use: Flushes buffers when a client is ready to read again.
208 static void a_flush(int fd, unsigned mode, void *v)
216 if ((n = trywrite(a, o->p_out, o->p_in - o->p_out)) < 0)
219 if (o->p_in < o->p_out)
232 /*----- Utility functions -------------------------------------------------*/
234 /* --- @a_write@, @a_vwrite@ --- *
236 * Arguments: @admin *a@ = admin connection to write to
237 * @const char *status@ = status code to report
238 * @const char *tag@ = tag string, or null
239 * @const char *fmt@ = pointer to format string
240 * @va_list ap@ = arguments in list
241 * @...@ = other arguments
245 * Use: Sends a message to an admin connection.
248 static void a_vwrite(admin *a, const char *status, const char *tag,
249 const char *fmt, va_list ap)
253 if (tag) dstr_puts(&d, "BG");
254 dstr_puts(&d, status);
261 dstr_vputf(&d, fmt, &ap);
264 dosend(a, d.buf, d.len);
268 static void a_write(admin *a, const char *status, const char *tag,
269 const char *fmt, ...)
273 a_vwrite(a, status, tag, fmt, ap);
277 /* --- @a_ok@, @a_info@, @a_fail@ --- *
279 * Arguments: @admin *a@ = connection
280 * @const char *fmt@ = format string
281 * @...@ = other arguments
285 * Use: Convenience functions for @a_write@.
288 static void a_ok(admin *a) { a_write(a, "OK", 0, 0); }
290 static void a_info(admin *a, const char *fmt, ...)
294 a_vwrite(a, "INFO", 0, fmt, ap);
298 static void a_fail(admin *a, const char *fmt, ...)
302 a_vwrite(a, "FAIL", 0, fmt, ap);
306 /* --- @a_alert@, @a_valert@, @a_rawalert@ --- *
308 * Arguments: @unsigned f_and, f_eq@ = filter for connections
309 * @const char *status@ = status string
310 * @const char *fmt@ = pointer to format string
311 * @const char *p@ = pointer to raw string
312 * @size_t sz@ = size of raw string
313 * @va_list ap@ = arguments in list
314 * @...@ = other arguments
318 * Use: Write a message to all admin connections matched by the given
322 static void a_rawalert(unsigned f_and, unsigned f_eq, const char *status,
323 const char *p, size_t sz)
328 if (!(flags & F_INIT))
330 dstr_puts(&d, status);
333 dstr_putm(&d, p, sz);
338 for (a = admins; a; a = aa) {
340 if ((a->f & f_and) == f_eq)
341 dosend(a, d.buf, d.len);
346 static void a_valert(unsigned f_and, unsigned f_eq, const char *tag,
347 const char *fmt, va_list ap)
351 if (!(flags & F_INIT))
354 dstr_vputf(&d, fmt, &ap);
355 a_rawalert(f_and, f_eq, tag, fmt ? d.buf : 0, fmt ? d.len : 0);
360 static void a_alert(unsigned f_and, unsigned f_eq, const char *tag,
361 const char *fmt, ...)
365 a_valert(f_and, f_eq, tag, fmt, ap);
370 /* --- @a_warn@ --- *
372 * Arguments: @const char *fmt@ = pointer to format string
373 * @...@ = other arguments
377 * Use: Informs all admin connections of a warning.
380 void a_warn(const char *fmt, ...)
386 a_valert(0, 0, "WARN", fmt, ap);
388 fprintf(stderr, "%s: ", QUIS);
389 vfprintf(stderr, fmt, ap);
395 /* --- @a_trace@ --- *
397 * Arguments: @const char *p@ = pointer to a buffer
398 * @size_t sz@ = size of the buffer
399 * @void *v@ = uninteresting pointer
403 * Use: Custom trace output handler. Sends trace messages to
404 * interested admin connections.
408 static void a_trace(const char *p, size_t sz, void *v)
409 { a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); }
412 /* --- @a_notify@ --- *
414 * Arguments: @const char *fmt@ = pointer to format string
415 * @...@ = other arguments
419 * Use: Sends a notification to interested admin connections.
422 void a_notify(const char *fmt, ...)
427 a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, ap);
431 /* --- @a_quit@ --- *
437 * Use: Shuts things down nicely.
446 while ((p = p_first()) != 0)
451 /* --- @a_sigdie@ --- *
453 * Arguments: @int sig@ = signal number
454 * @void *v@ = an uninteresting argument
458 * Use Shuts down on receipt of a fatal signal.
461 static void a_sigdie(int sig, void *v)
467 case SIGTERM: p = "SIGTERM"; break;
468 case SIGINT: p = "SIGINT"; break;
470 sprintf(buf, "%i", sig);
474 a_warn("SERVER quit signal %s", p);
478 /* --- @a_sighup@ --- *
480 * Arguments: @int sig@ = signal number
481 * @void *v@ = an uninteresting argument
485 * Use Logs a message about SIGHUP not being useful.
488 static void a_sighup(int sig, void *v)
490 a_warn("SERVER ignore signal SIGHUP");
493 /* --- @a_parsetime@ --- *
495 * Arguments; @const char *p@ = time string to parse
497 * Returns: Time in seconds, or @< 0@ on error.
500 static long a_parsetime(const char *p)
503 long t = strtol(p, &q, 0);
509 case 's': if (q[1] != 0)
516 /* --- @a_findpeer@ --- *
518 * Arguments: @admin *a@ = admin connection
519 * @const char *pn@ = peer name
521 * Returns: The peer, or null if not there.
523 * Use: Finds a peer, reporting an error if it failed.
526 static peer *a_findpeer(admin *a, const char *pn)
530 if ((p = p_find(pn)) == 0)
531 a_fail(a, "unknown-peer %s", pn);
535 /*----- Backgrounded operations -------------------------------------------*/
538 (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>")
540 /* --- @a_bgrelease@ --- *
542 * Arguments: @admin_bgop *bg@ = backgrounded operation
546 * Use: Removes a backgrounded operation from the queue, since
547 * (presumably) it's done.
550 static void a_bgrelease(admin_bgop *bg)
554 T( trace(T_ADMIN, "admin: release bgop %s", BGTAG(bg)); )
555 if (bg->tag) xfree(bg->tag);
556 else selbuf_enable(&a->b);
557 if (bg->next) bg->next->prev = bg->prev;
558 if (bg->prev) bg->prev->next = bg->next;
559 else a->bg = bg->next;
561 if (a->f & AF_CLOSE) a_destroy(a);
565 /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- *
567 * Arguments: @admin_bgop *bg@ = backgrounded operation
568 * @const char *fmt@ = format string
569 * @...@ = other arguments
573 * Use: Convenience functions for @a_write@.
576 static void a_bgok(admin_bgop *bg)
577 { a_write(bg->a, "OK", bg->tag, 0); }
579 static void a_bginfo(admin_bgop *bg, const char *fmt, ...)
583 a_vwrite(bg->a, "INFO", bg->tag, fmt, ap);
587 static void a_bgfail(admin_bgop *bg, const char *fmt, ...)
591 a_vwrite(bg->a, "FAIL", bg->tag, fmt, ap);
595 /* --- @a_bgadd@ --- *
597 * Arguments: @admin *a@ = administration connection
598 * @admin_bgop *bg@ = pointer to background operation
599 * @const char *tag@ = background tag, or null for foreground
600 * @void (*cancel)(admin_bgop *)@ = cancel function
604 * Use: Links a background job into the list.
607 static void a_bgadd(admin *a, admin_bgop *bg, const char *tag,
608 void (*cancel)(admin_bgop *))
611 bg->tag = xstrdup(tag);
614 selbuf_disable(&a->b);
620 if (a->bg) a->bg->prev = bg;
623 T( trace(T_ADMIN, "admin: add bgop %s", BGTAG(bg)); )
624 if (tag) a_write(a, "DETACH", tag, 0);
627 /*----- Name resolution operations ----------------------------------------*/
629 /* --- @a_resolved@ --- *
631 * Arguments: @struct hostent *h@ = pointer to resolved hostname
632 * @void *v@ = pointer to resolver operation
636 * Use: Handles a completed name resolution.
639 static void a_resolved(struct hostent *h, void *v)
643 T( trace(T_ADMIN, "admin: resop %s resolved", BGTAG(r)); )
646 a_bgfail(&r->bg, "resolve-error %s", r->addr);
647 r->func(r, ARES_FAIL);
649 memcpy(&r->sa.sin.sin_addr, h->h_addr, sizeof(struct in_addr));
657 /* --- @a_restimer@ --- *
659 * Arguments: @struct timeval *tv@ = timer
660 * @void *v@ = pointer to resolver operation
664 * Use: Times out a resolver.
667 static void a_restimer(struct timeval *tv, void *v)
671 T( trace(T_ADMIN, "admin: resop %s timeout", BGTAG(r)); )
672 a_bgfail(&r->bg, "resolver-timeout %s\n", r->addr);
673 r->func(r, ARES_FAIL);
679 /* --- @a_rescancel@ --- *
681 * Arguments: @admin_bgop *bg@ = background operation
685 * Use: Cancels an add operation.
688 static void a_rescancel(admin_bgop *bg)
690 admin_resop *r = (admin_resop *)bg;
692 T( trace(T_ADMIN, "admin: cancel resop %s", BGTAG(r)); )
693 r->func(r, ARES_FAIL);
699 /* --- @a_resolve@ --- *
701 * Arguments: @admin *a@ = administration connection
702 * @admin_resop *r@ = resolver operation to run
703 * @const char *tag@ = background operation tag
704 * @void (*func)(struct admin_resop *, int@ = handler function
705 * @unsigned ac@ = number of remaining arguments
706 * @char *av[]@ = pointer to remaining arguments
710 * Use: Cranks up a resolver job.
713 static void a_resolve(admin *a, admin_resop *r, const char *tag,
714 void (*func)(struct admin_resop *, int),
715 unsigned ac, char *av[])
722 /* --- Fill in the easy bits of address --- */
726 if (mystrieq(av[i], "inet")) i++;
728 a_fail(a, "bad-addr-syntax [inet] ADDRESS PORT");
731 r->sa.sin.sin_family = AF_INET;
732 r->sasz = sizeof(r->sa.sin);
733 r->addr = xstrdup(av[i]);
734 pt = strtoul(av[i + 1], &p, 0);
736 struct servent *s = getservbyname(av[i + 1], "udp");
738 a_fail(a, "unknown-service %s", av[i + 1]);
741 pt = ntohs(s->s_port);
743 if (pt == 0 || pt >= 65536) {
744 a_fail(a, "invalid-port %lu", pt);
747 r->sa.sin.sin_port = htons(pt);
749 /* --- Report backgrounding --- *
751 * Do this for consistency of interface, even if we're going to get the
752 * answer straight away.
755 a_bgadd(a, &r->bg, tag, a_rescancel);
756 T( trace(T_ADMIN, "admin: %u, resop %s, hostname `%s'",
757 a->seq, BGTAG(r), r->addr); )
759 /* --- If the name is numeric, do it the easy way --- */
761 if (inet_aton(av[i], &r->sa.sin.sin_addr)) {
762 T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); )
769 /* --- Store everything for later and crank up the resolver --- */
771 gettimeofday(&tv, 0);
772 tv.tv_sec += T_RESOLVE;
773 sel_addtimer(&sel, &r->t, &tv, a_restimer, r);
774 bres_byname(&r->r, r->addr, a_resolved, r);
779 if (r->addr) xfree(r->addr);
783 /*----- Adding peers ------------------------------------------------------*/
785 /* --- @a_doadd@ --- *
787 * Arguments: @admin_resop *r@ = resolver operation
788 * @int rc@ = how it worked
792 * Use: Handles a completed resolution.
795 static void a_doadd(admin_resop *r, int rc)
797 admin_addop *add = (admin_addop *)r;
799 T( trace(T_ADMIN, "admin: done add op %s", BGTAG(add)); )
802 add->peer.sasz = add->r.sasz;
803 add->peer.sa = add->r.sa;
804 if (p_find(add->peer.name))
805 a_bgfail(&add->r.bg, "peer-exists %s", add->peer.name);
806 else if (!p_create(&add->peer))
807 a_bgfail(&add->r.bg, "peer-create-fail %s", add->peer.name);
812 xfree(add->peer.name);
815 /* --- @acmd_add@ --- *
817 * Arguments: @admin *a@ = connection which requested the addition
818 * @unsigned ac@ = argument count
819 * @char *av[]@ = pointer to the argument list
823 * Use: Adds a new peer.
826 static void acmd_add(admin *a, unsigned ac, char *av[])
830 admin_addop *add = 0;
832 /* --- Set stuff up --- */
834 add = xmalloc(sizeof(*add));
835 add->peer.name = xstrdup(av[0]);
837 add->peer.tops = tun_default;
839 /* --- Make sure someone's not got there already --- */
842 a_fail(a, "peer-exists %s", av[0]);
846 /* --- Parse options --- */
852 if (mystrieq(av[i], "-background")) {
853 if (!av[++i]) goto bad_syntax;
855 } else if (mystrieq(av[i], "-tunnel")) {
856 if (!av[++i]) goto bad_syntax;
859 a_fail(a, "unknown-tunnel %s", av[i]);
862 if (mystrieq(av[i], tunnels[j]->name)) {
863 add->peer.tops = tunnels[j];
867 } else if (mystrieq(av[i], "-keepalive")) {
869 if (!av[++i]) goto bad_syntax;
870 if ((t = a_parsetime(av[i])) < 0) {
871 a_fail(a, "bad-time-spec %s", av[i]);
875 } else if (mystrieq(av[i], "--")) {
883 /* --- Crank up the resolver --- */
885 a_resolve(a, &add->r, tag, a_doadd, ac - i, av + i);
888 /* --- Clearing up --- */
891 a_fail(a, "bad-syntax -- add PEER [OPTIONS] ADDR ...");
893 xfree(add->peer.name);
898 /*----- Ping --------------------------------------------------------------*/
900 /* --- @a_pingcancel@ --- *
902 * Arguments: @admin_bgop *bg@ = background operation block
906 * Use: Cancels a running ping.
909 static void a_pingcancel(admin_bgop *bg)
911 admin_pingop *pg = (admin_pingop *)bg;
912 T( trace(T_ADMIN, "admin: cancel ping op %s", BGTAG(pg)); )
913 p_pingdone(&pg->ping, PING_NONOTIFY);
916 /* --- @a_pong@ --- *
918 * Arguments: @int rc@ = return code
919 * @void *v@ = ping operation block
923 * Use: Collects what happened to a ping message.
926 static void a_pong(int rc, void *v)
928 admin_pingop *pg = v;
934 gettimeofday(&tv, 0);
935 tv_sub(&tv, &tv, &pg->pingtime);
936 millis = (double)tv.tv_sec * 1000 + (double)tv.tv_usec/1000;
937 a_bginfo(&pg->bg, "ping-ok %.1f", millis);
941 a_bginfo(&pg->bg, "ping-timeout");
945 a_bginfo(&pg->bg, "ping-peer-died");
951 T( trace(T_ADMIN, "admin: ponged ping op %s", BGTAG(pg)); )
952 a_bgrelease(&pg->bg);
955 /* --- @acmd_ping@, @acmd_eping@ --- *
957 * Arguments: @admin *a@ = connection which requested the ping
958 * @unsigned ac@ = argument count
959 * @char *av[]@ = pointer to the argument list
966 static void a_ping(admin *a, unsigned ac, char *av[],
967 const char *cmd, unsigned msg)
972 admin_pingop *pg = 0;
979 if (mystrieq(av[i], "-background")) {
980 if (!av[++i]) goto bad_syntax;
982 } else if (mystrieq(av[i], "-timeout")) {
983 if (!av[++i]) goto bad_syntax;
984 if ((t = a_parsetime(av[i])) < 0) {
985 a_fail(a, "bad-time-spec %s", av[i]);
988 } else if (mystrieq(av[i], "--")) {
996 if (!av[i]) goto bad_syntax;
997 if ((p = a_findpeer(a, av[i])) == 0)
999 pg = xmalloc(sizeof(*pg));
1000 gettimeofday(&pg->pingtime, 0);
1001 a_bgadd(a, &pg->bg, tag, a_pingcancel);
1002 T( trace(T_ADMIN, "admin: ping op %s: %s to %s",
1003 BGTAG(pg), cmd, p_name(p)); )
1004 if (p_pingsend(p, &pg->ping, msg, t, a_pong, pg)) {
1005 a_bgfail(&pg->bg, "ping-send-failed");
1006 a_bgrelease(&pg->bg);
1011 a_fail(a, "bad-syntax -- %s [OPTIONS] PEER", cmd);
1015 static void acmd_ping(admin *a, unsigned ac, char *av[])
1016 { a_ping(a, ac, av, "ping", MISC_PING); }
1017 static void acmd_eping(admin *a, unsigned ac, char *av[])
1018 { a_ping(a, ac, av, "eping", MISC_EPING); }
1020 /*----- Administration commands -------------------------------------------*/
1022 /* --- Miscellaneous commands --- */
1024 /* --- @traceish@ --- *
1026 * Arguments: @admin *a@ = connection to complain on
1027 * @unsigned ac@ = number of arguments
1028 * @char *av[]@ = vector of arguments
1029 * @const char *what@ = what we're messing with
1030 * @const trace_opt *tt@ = options table
1031 * @unsigned *ff@ = where the flags are
1033 * Returns: Nonzero if anything changed.
1035 * Use: Guts of trace-ish commands like `trace' and `watch'.
1038 static int traceish(admin *a, unsigned ac, char *av[],
1039 const char *what, const trace_opt *tt, unsigned *ff)
1043 if (!ac || strcmp(av[0], "?") == 0) {
1045 for (t = tt; t->ch; t++) {
1046 a_info(a, "%c%c %s",
1047 t->ch, (*ff & t->f) == t->f ? '+' : ' ', t->help);
1057 case '+': sense = 1; break;
1058 case '-': sense = 0; break;
1060 for (t = tt; t->ch; t++) {
1062 if (sense) f |= t->f;
1067 a_fail(a, "bad-%s-option %c", what, *p);
1083 static void acmd_trace(admin *a, unsigned ac, char *av[])
1085 if (traceish(a, ac, av, "trace", tr_opts, &tr_flags))
1086 trace_level(tr_flags);
1091 static void acmd_watch(admin *a, unsigned ac, char *av[])
1093 traceish(a, ac, av, "watch", w_opts, &a->f);
1096 static void quotify(dstr *d, const char *p)
1100 if (*p && !p[strcspn(p, "\"' \t\n\v")])
1105 if (*p == '\\' || *p == '\"')
1113 static void alertcmd(admin *a, unsigned f_and, unsigned f_eq,
1114 const char *tag, unsigned ac, char *av[])
1119 dstr_puts(&d, "USER");
1120 for (i = 0; i < ac; i++)
1123 a_rawalert(f_and, f_eq, tag, d.buf, d.len);
1128 static void acmd_notify(admin *a, unsigned ac, char *av[])
1129 { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", ac, av); }
1130 static void acmd_warn(admin *a, unsigned ac, char *av[])
1131 { alertcmd(a, AF_WARN, AF_WARN, "WARN", ac, av); }
1133 static void acmd_port(admin *a, unsigned ac, char *av[])
1135 a_info(a, "%u", p_port());
1139 static void acmd_daemon(admin *a, unsigned ac, char *av[])
1141 if (flags & F_DAEMON)
1142 a_fail(a, "already-daemon");
1148 a_fail(a, "daemon-error -- %s", strerror(errno));
1156 static void acmd_list(admin *a, unsigned ac, char *av[])
1159 for (p = p_first(); p; p = p_next(p))
1160 a_info(a, "%s", p_name(p));
1164 static void acmd_ifname(admin *a, unsigned ac, char *av[])
1168 if ((p = a_findpeer(a, av[0])) != 0) {
1169 a_info(a, "%s", p_ifname(p));
1174 static void acmd_getchal(admin *a, unsigned ac, char *av[])
1178 buf_init(&b, buf_i, PKBUFSZ);
1180 a_info(a, "%s", b64_encode(BBASE(&b), BLEN(&b)));
1184 static void acmd_checkchal(admin *a, unsigned ac, char *av[])
1191 base64_decode(&b64, av[0], strlen(av[0]), &d);
1192 base64_decode(&b64, 0, 0, &d);
1193 buf_init(&b, d.buf, d.len);
1194 if (c_check(&b) || BBAD(&b) || BLEFT(&b))
1195 a_fail(a, "invalid-challenge");
1201 static void acmd_greet(admin *a, unsigned ac, char *av[])
1207 if ((p = a_findpeer(a, av[0])) != 0) {
1209 base64_decode(&b64, av[1], strlen(av[1]), &d);
1210 base64_decode(&b64, 0, 0, &d);
1211 p_greet(p, d.buf, d.len);
1217 static void acmd_addr(admin *a, unsigned ac, char *av[])
1222 if ((p = a_findpeer(a, av[0])) != 0) {
1224 assert(ad->sa.sa_family == AF_INET);
1225 a_info(a, "INET %s %u",
1226 inet_ntoa(ad->sin.sin_addr),
1227 (unsigned)ntohs(ad->sin.sin_port));
1232 static void acmd_peerinfo(admin *a, unsigned ac, char *av[])
1237 if ((p = a_findpeer(a, av[0])) != 0) {
1239 a_info(a, "tunnel=%s", ps->tops->name);
1240 a_info(a, "keepalive=%lu", ps->t_ka);
1245 static void acmd_servinfo(admin *a, unsigned ac, char *av[])
1247 a_info(a, "implementation=edgeware-tripe");
1248 a_info(a, "version=%s", VERSION);
1249 a_info(a, "daemon=%s", BOOL(flags & F_DAEMON));
1253 static void acmd_stats(admin *a, unsigned ac, char *av[])
1258 if ((p = a_findpeer(a, av[0])) == 0)
1262 a_info(a, "start-time=%s", timestr(st->t_start));
1263 a_info(a, "last-packet-time=%s", timestr(st->t_last));
1264 a_info(a, "last-keyexch-time=%s", timestr(st->t_kx));
1265 a_info(a, "packets-in=%lu bytes-in=%lu", st->n_in, st->sz_in);
1266 a_info(a, "packets-out=%lu bytes-out=%lu",
1267 st->n_out, st->sz_out);
1268 a_info(a, "keyexch-packets-in=%lu keyexch-bytes-in=%lu",
1269 st->n_kxin, st->sz_kxin);
1270 a_info(a, "keyexch-packets-out=%lu keyexch-bytes-out=%lu",
1271 st->n_kxout, st->sz_kxout);
1272 a_info(a, "ip-packets-in=%lu ip-bytes-in=%lu",
1273 st->n_ipin, st->sz_ipin);
1274 a_info(a, "ip-packets-out=%lu ip-bytes-out=%lu",
1275 st->n_ipout, st->sz_ipout);
1276 a_info(a, "rejected-packets=%lu", st->n_reject);
1280 static void acmd_kill(admin *a, unsigned ac, char *av[])
1283 if ((p = a_findpeer(a, av[0])) != 0) {
1289 static void acmd_forcekx(admin *a, unsigned ac, char *av[])
1292 if ((p = a_findpeer(a, av[0])) != 0) {
1293 kx_start(&p->kx, 1);
1298 static void acmd_reload(admin *a, unsigned ac, char *av[])
1299 { p_keyreload(); a_ok(a); }
1301 static void acmd_quit(admin *a, unsigned ac, char *av[])
1303 a_warn("SERVER quit admin-request");
1309 static void acmd_version(admin *a, unsigned ac, char *av[])
1311 a_info(a, "%s %s", PACKAGE, VERSION);
1315 static void acmd_tunnels(admin *a, unsigned ac, char *av[])
1318 for (i = 0; tunnels[i]; i++)
1319 a_info(a, "%s", tunnels[i]->name);
1323 /* --- The command table and help --- */
1325 typedef struct acmd {
1328 unsigned argmin, argmax;
1329 void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]);
1332 static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]);
1334 static const acmd acmdtab[] = {
1335 { "add", "add PEER [OPTIONS] ADDR ...",
1336 2, 0xffff, acmd_add },
1337 { "addr", "addr PEER", 1, 1, acmd_addr },
1338 { "checkchal", "checkchal CHAL", 1, 1, acmd_checkchal },
1339 { "daemon", "daemon", 0, 0, acmd_daemon },
1340 { "eping", "eping [OPTIONS] PEER", 1, 0xffff, acmd_eping },
1341 { "forcekx", "forcekx PEER", 1, 1, acmd_forcekx },
1342 { "getchal", "getchal", 0, 0, acmd_getchal },
1343 { "greet", "greet PEER CHAL", 2, 2, acmd_greet },
1344 { "help", "help", 0, 0, acmd_help },
1345 { "ifname", "ifname PEER", 1, 1, acmd_ifname },
1346 { "kill", "kill PEER", 1, 1, acmd_kill },
1347 { "list", "list", 0, 0, acmd_list },
1348 { "notify", "notify MESSAGE ...", 1, 0xffff, acmd_notify },
1349 { "peerinfo", "peerinfo PEER", 1, 1, acmd_peerinfo },
1350 { "ping", "ping [OPTIONS] PEER", 1, 0xffff, acmd_ping },
1351 { "port", "port", 0, 0, acmd_port },
1352 { "quit", "quit", 0, 0, acmd_quit },
1353 { "reload", "reload", 0, 0, acmd_reload },
1354 { "servinfo", "servinfo", 0, 0, acmd_servinfo },
1355 { "stats", "stats PEER", 1, 1, acmd_stats },
1357 { "trace", "trace [OPTIONS]", 0, 1, acmd_trace },
1359 { "tunnels", "tunnels", 0, 0, acmd_tunnels },
1360 { "version", "version", 0, 0, acmd_version },
1361 { "warn", "warn MESSAGE ...", 1, 0xffff, acmd_warn },
1362 { "watch", "watch [OPTIONS]", 0, 1, acmd_watch },
1366 static void acmd_help(admin *a, unsigned ac, char *av[])
1369 for (c = acmdtab; c->name; c++)
1370 a_info(a, "%s", c->help);
1374 /*----- Connection handling -----------------------------------------------*/
1376 /* --- @a_lock@ --- *
1378 * Arguments: @admin *a@ = pointer to an admin block
1382 * Use: Locks an admin block so that it won't be destroyed
1386 static void a_lock(admin *a) { a->ref++; }
1388 /* --- @a_dodestroy@ --- *
1390 * Arguments: @admin *a@ = pointer to an admin block
1394 * Use: Actually does the legwork of destroying an admin block.
1397 static void a_dodestroy(admin *a)
1399 admin_bgop *bg, *bbg;
1401 T( trace(T_ADMIN, "admin: completing destruction of connection %u",
1404 selbuf_destroy(&a->b);
1405 for (bg = a->bg; bg; bg = bbg) {
1408 if (bg->tag) xfree(bg->tag);
1411 if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd);
1417 a->next->prev = a->prev;
1419 a->prev->next = a->next;
1425 /* --- @a_unlock@ --- *
1427 * Arguments: @admin *a@ = pointer to an admin block
1431 * Use: Unlocks an admin block, allowing its destruction. This is
1432 * also the second half of @a_destroy@.
1435 static void a_unlock(admin *a)
1438 if (!--a->ref && (a->f & AF_DEAD))
1442 /* --- @a_destroy@ --- *
1444 * Arguments: @admin *a@ = pointer to an admin block
1448 * Use: Destroys an admin block. This requires a certain amount of
1452 static void freequeue(oqueue *q)
1456 for (o = q->hd; o; o = oo) {
1463 static void a_destroy(admin *a)
1465 /* --- Don't multiply destroy admin blocks --- */
1470 /* --- Make sure nobody expects it to work --- */
1473 T( trace(T_ADMIN, "admin: destroying connection %u", a->seq); )
1475 /* --- Free the output buffers --- */
1481 /* --- If the block is locked, that's all we can manage --- */
1486 trace(T_ADMIN, "admin: deferring destruction..."); )
1489 /* --- @a_line@ --- *
1491 * Arguments: @char *p@ = pointer to the line read
1492 * @size_t len@ = length of the line
1493 * @void *vp@ = pointer to my admin block
1497 * Use: Handles a line of input.
1500 static void a_line(char *p, size_t len, void *vp)
1515 selbuf_disable(&a->b);
1519 ac = str_qsplit(p, av, 16, 0, STRF_QUOTE);
1522 for (c = acmdtab; c->name; c++) {
1523 if (mystrieq(av[0], c->name)) {
1525 if (c->argmin > ac || ac > c->argmax)
1526 a_fail(a, "bad-syntax -- %s", c->help);
1529 c->func(a, ac, av + 1);
1535 a_fail(a, "unknown-command %s", av[0]);
1538 /* --- @a_create@ --- *
1540 * Arguments: @int fd_in, fd_out@ = file descriptors to use
1541 * @unsigned f@ = initial flags to set
1545 * Use: Creates a new admin connection.
1548 void a_create(int fd_in, int fd_out, unsigned f)
1550 admin *a = CREATE(admin);
1552 T( static unsigned seq = 0;
1554 T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); )
1557 if (fd_in == STDIN_FILENO) a_stdin = a;
1558 fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
1559 if (fd_out != fd_in)
1560 fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
1561 selbuf_init(&a->b, &sel, fd_in, a_line, a);
1562 sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a);
1563 a->out.hd = a->out.tl = 0;
1566 if (admins) admins->prev = a;
1570 /* --- @a_accept@ --- *
1572 * Arguments: @int fd@ = file descriptor to accept
1573 * @unsigned mode@ = what to do
1574 * @void *v@ = uninteresting pointer
1578 * Use: Accepts a new admin connection.
1581 static void a_accept(int fd, unsigned mode, void *v)
1584 struct sockaddr_un sun;
1585 size_t sz = sizeof(sun);
1587 if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) {
1588 if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK &&
1589 errno != ECONNABORTED && errno != EPROTO)
1590 a_warn("ADMIN accept-error -- %s", strerror(errno));
1593 a_create(nfd, nfd, 0);
1596 /* --- @a_daemon@ --- *
1602 * Use: Informs the admin module that it's a daemon.
1610 /* --- @a_init@ --- *
1612 * Arguments: @const char *name@ = socket name to create
1616 * Use: Creates the admin listening socket.
1619 void a_init(const char *name)
1623 struct sockaddr_un sun;
1624 struct sigaction sa;
1627 /* --- Set up the socket address --- */
1629 sz = strlen(name) + 1;
1630 if (sz > sizeof(sun.sun_path))
1631 die(EXIT_FAILURE, "socket name `%s' too long", name);
1633 sun.sun_family = AF_UNIX;
1634 memcpy(sun.sun_path, name, sz);
1635 sz += offsetof(struct sockaddr_un, sun_path);
1637 /* --- Attempt to bind to the socket --- */
1641 if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
1642 die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno));
1643 if (bind(fd, (struct sockaddr *)&sun, sz) < 0) {
1646 if (errno != EADDRINUSE) {
1647 die(EXIT_FAILURE, "couldn't bind to address `%s': %s",
1648 sun.sun_path, strerror(e));
1651 die(EXIT_FAILURE, "too many retries; giving up");
1653 if (!connect(fd, (struct sockaddr *)&sun, sz)) {
1654 die(EXIT_FAILURE, "server already listening on admin socket `%s'",
1657 if (errno != ECONNREFUSED)
1658 die(EXIT_FAILURE, "couldn't bind to address: %s", strerror(e));
1659 if (stat(sun.sun_path, &st)) {
1660 die(EXIT_FAILURE, "couldn't stat `%s': %s",
1661 sun.sun_path, strerror(errno));
1663 if (!S_ISSOCK(st.st_mode))
1664 die(EXIT_FAILURE, "object `%s' isn't a socket", sun.sun_path);
1665 T( trace(T_ADMIN, "admin: stale socket found; removing it"); )
1666 unlink(sun.sun_path);
1670 chmod(sun.sun_path, 0600);
1671 fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
1673 die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno));
1675 /* --- Listen to the socket --- */
1677 sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0);
1681 T( trace_custom(a_trace, 0);
1682 trace(T_ADMIN, "admin: enabled custom tracing"); )
1685 /* --- Set up signal handlers --- */
1687 sig_add(&s_term, SIGTERM, a_sigdie, 0);
1688 sig_add(&s_hup, SIGHUP, a_sighup, 0);
1689 signal(SIGPIPE, SIG_IGN);
1690 sigaction(SIGINT, 0, &sa);
1691 if (sa.sa_handler != SIG_IGN)
1692 sig_add(&s_int, SIGINT, a_sigdie, 0);
1695 /*----- That's all, folks -------------------------------------------------*/