3 * Admin interface for configuration
5 * (c) 2001 Straylight/Edgeware
8 /*----- Licensing notice --------------------------------------------------*
10 * This file is part of Trivial IP Encryption (TrIPE).
12 * TrIPE is free software: you can redistribute it and/or modify it under
13 * the terms of the GNU General Public License as published by the Free
14 * Software Foundation; either version 3 of the License, or (at your
15 * option) any later version.
17 * TrIPE is distributed in the hope that it will be useful, but WITHOUT
18 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22 * You should have received a copy of the GNU General Public License
23 * along with TrIPE. If not, see <https://www.gnu.org/licenses/>.
26 /*----- Header files ------------------------------------------------------*/
30 /*----- Global variables --------------------------------------------------*/
34 const trace_opt tr_opts[] = {
35 { 't', T_TUNNEL, "tunnel events" },
36 { 'r', T_PEER, "peer events" },
37 { 'a', T_ADMIN, "admin interface" },
38 { 's', T_KEYSET, "symmetric keyset management" },
39 { 'x', T_KEYEXCH, "key exchange" },
40 { 'm', T_KEYMGMT, "key management" },
41 { 'l', T_CHAL, "challenge management" },
42 { 'v', T_PRIVSEP, "privilege separation" },
43 { 'p', T_PACKET, "packet contents" },
44 { 'c', T_CRYPTO, "crypto details" },
45 { 'A', T_ALL, "all of the above" },
49 unsigned tr_flags = 0;
52 static const trace_opt w_opts[] = {
54 { '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 --------------------------------------------------*/
65 static adns_state ads;
71 static const char *sockname = 0;
72 static sym_table a_svcs;
73 static unsigned flags = 0;
74 static admin *a_stdin = 0;
75 static sig s_term, s_int, s_hup;
79 #define F_FOREGROUND 4u
81 #define T_RESOLVE SEC(30)
84 static void a_destroy(admin */*a*/);
86 #define BOOL(x) ((x) ? "t" : "nil")
88 /*----- Output functions --------------------------------------------------*/
90 /* --- @trywrite@ --- *
92 * Arguments: @admin *a@ = pointer to an admin block
93 * @const char *p@ = pointer to buffer to write
94 * @size_t sz@ = size of data to write
96 * Returns: The number of bytes written, or less than zero on error.
98 * Use: Attempts to write data to a client.
101 static ssize_t trywrite(admin *a, const char *p, size_t sz)
108 n = write(a->w.fd, p, sz);
118 if (errno != EAGAIN && errno != EWOULDBLOCK) {
120 a_warn("ADMIN", "client-write-error", "?ERRNO", A_END);
127 /* --- @doqueue@ -- *
129 * Arguments: @oqueue *q@ = pointer to output queue
130 * @const char *p@ = pointer to buffer to write
131 * @size_t sz@ = size of buffer
133 * Returns: Nonzero if the queue was previously empty.
135 * Use: Queues data to be written later.
138 static int doqueue(oqueue *q, const char *p, size_t sz)
147 else if (o->p_in < o->buf + OBUFSZ)
151 o = xmalloc(sizeof(obuf));
153 o->p_in = o->p_out = o->buf;
161 n = o->buf + OBUFSZ - o->p_in;
164 memcpy(o->p_in, p, n);
173 /* --- @dosend@ --- *
175 * Arguemnts: @admin *a@ = pointer to an admin block
176 * @const char *p@ = pointer to buffer to write
177 * @size_t sz@ = size of data to write
181 * Use: Sends data to an admin client.
184 static void dosend(admin *a, const char *p, size_t sz)
191 if ((n = trywrite(a, p, sz)) < 0)
198 if (doqueue(&a->out, p, sz))
202 /* --- @a_flush@ --- *
204 * Arguments: @int fd@ = file descriptor
205 * @unsigned mode@ = what's happening
206 * @void *v@ = pointer to my admin block
210 * Use: Flushes buffers when a client is ready to read again.
213 static void a_flush(int fd, unsigned mode, void *v)
221 if ((n = trywrite(a, o->p_out, o->p_in - o->p_out)) < 0)
224 if (o->p_in < o->p_out)
237 /*----- Utility functions -------------------------------------------------*/
239 /* --- @a_vformat@ --- *
241 * Arguments: @dstr *d@ = where to leave the formatted message
242 * @const char *fmt@ = pointer to format string
243 * @va_list *ap@ = arguments in list
247 * Use: Main message token formatting driver. The arguments are
248 * interleaved formatting tokens and their parameters, finally
249 * terminated by an entry @A_END@.
253 * * "*..." ... -- pretokenized @dstr_putf@-like string
255 * * "?ADDR" SOCKADDR -- a socket address, to be converted
257 * * "?B64" BUFFER SIZE -- binary data to be base64-encoded
259 * * "?TOKENS" VECTOR -- null-terminated vector of tokens
261 * * "?PEER" PEER -- peer's name
263 * * "?ERR" CODE -- system error code
265 * * "?ERRNO" -- system error code from @errno@
267 * * "[!]..." ... -- @dstr_putf@-like string as single token
270 void a_vformat(dstr *d, const char *fmt, va_list *ap)
276 if (d->len) dstr_putc(d, ' ');
277 dstr_vputf(d, fmt + 1, ap);
278 } else if (*fmt == '?') {
279 if (strcmp(fmt, "?ADDR") == 0) {
280 const addr *a = va_arg(*ap, const addr *);
281 char name[NI_MAXHOST], serv[NI_MAXSERV];
283 if ((err = getnameinfo(&a->sa, addrsz(a),
284 name, sizeof(name), serv, sizeof(serv),
285 (NI_NUMERICHOST | NI_NUMERICSERV |
287 dstr_putf(d, " E%d", err);
288 u_quotify(d, gai_strerror(err));
290 ix = afix(a->sa.sa_family); assert(ix >= 0);
291 u_quotify(d, aftab[ix].name);
295 } else if (strcmp(fmt, "?B64") == 0) {
296 const octet *p = va_arg(*ap, const octet *);
297 size_t n = va_arg(*ap, size_t);
298 codec *b64 = base64_class.encoder(CDCF_NOEQPAD, "", 0);
300 b64->ops->code(b64, p, n, d);
301 b64->ops->code(b64, 0, 0, d);
302 b64->ops->destroy(b64);
303 } else if (strcmp(fmt, "?TOKENS") == 0) {
304 const char *const *av = va_arg(*ap, const char *const *);
305 while (*av) u_quotify(d, *av++);
306 } else if (strcmp(fmt, "?PEER") == 0)
307 u_quotify(d, p_name(va_arg(*ap, peer *)));
308 else if (strcmp(fmt, "?ERR") == 0) {
309 int e = va_arg(*ap, int);
310 dstr_putf(d, " E%d", e);
311 u_quotify(d, strerror(e));
312 } else if (strcmp(fmt, "?ERRNO") == 0) {
313 dstr_putf(d, " E%d", errno);
314 u_quotify(d, strerror(errno));
318 if (*fmt == '!') fmt++;
320 dstr_vputf(&dd, fmt, ap);
321 u_quotify(d, dd.buf);
323 fmt = va_arg(*ap, const char *);
330 /* --- @a_format@ --- *
332 * Arguments: @dstr *d@ = where to leave the formatted message
333 * @const char *fmt@ = pointer to format string
337 * Use: Writes a tokenized message into a string, for later
341 void a_format(dstr *d, const char *fmt, ...)
346 a_vformat(d, fmt, &ap);
350 /* --- @a_write@, @a_vwrite@ --- *
352 * Arguments: @admin *a@ = admin connection to write to
353 * @const char *status@ = status code to report
354 * @const char *tag@ = tag string, or null
355 * @const char *fmt@ = pointer to format string
356 * @va_list *ap@ = arguments in list
357 * @...@ = other arguments
361 * Use: Sends a message to an admin connection.
364 static void a_vwrite(admin *a, const char *status, const char *tag,
365 const char *fmt, va_list *ap)
369 if (tag) dstr_puts(&d, "BG");
370 dstr_puts(&d, status);
371 if (tag) u_quotify(&d, tag);
372 a_vformat(&d, fmt, ap);
374 dosend(a, d.buf, d.len);
378 static void a_write(admin *a, const char *status, const char *tag,
379 const char *fmt, ...)
384 a_vwrite(a, status, tag, fmt, &ap);
388 /* --- @a_ok@, @a_fail@ --- *
390 * Arguments: @admin *a@ = connection
391 * @const char *fmt@ = format string
392 * @...@ = other arguments
396 * Use: Convenience functions for @a_write@.
399 static void a_ok(admin *a) { a_write(a, "OK", 0, A_END); }
401 static void a_fail(admin *a, const char *fmt, ...)
406 a_vwrite(a, "FAIL", 0, fmt, &ap);
410 /* --- @a_info@ --- *
412 * Arguments: @admin *a@ = connection
413 * @const char *fmt@ = format string
414 * @...@ = other arguments
418 * Use: Report information to an admin client.
421 void a_info(admin *a, const char *fmt, ...)
426 a_vwrite(a, "INFO", 0, fmt, &ap);
430 /* --- @a_alert@, @a_valert@, @a_rawalert@ --- *
432 * Arguments: @unsigned f_and, f_eq@ = filter for connections
433 * @const char *status@ = status string
434 * @const char *fmt@ = pointer to format string
435 * @const char *p@ = pointer to raw string
436 * @size_t sz@ = size of raw string
437 * @va_list *ap@ = arguments in list
438 * @...@ = other arguments
442 * Use: Write a message to all admin connections matched by the given
446 static void a_rawalert(unsigned f_and, unsigned f_eq, const char *status,
447 const char *p, size_t sz)
452 if (!(flags & F_INIT))
454 dstr_puts(&d, status);
457 dstr_putm(&d, p, sz);
462 for (a = admins; a; a = aa) {
464 if ((a->f & f_and) == f_eq)
465 dosend(a, d.buf, d.len);
470 static void a_valert(unsigned f_and, unsigned f_eq, const char *status,
471 const char *fmt, va_list *ap)
475 if (!(flags & F_INIT))
477 a_vformat(&d, fmt, ap);
478 a_rawalert(f_and, f_eq, status, fmt ? d.buf : 0, fmt ? d.len : 0);
482 static void a_alert(unsigned f_and, unsigned f_eq, const char *status,
483 const char *fmt, ...)
488 a_valert(f_and, f_eq, status, fmt, &ap);
492 /* --- @a_warn@ --- *
494 * Arguments: @const char *fmt@ = pointer to format string
495 * @...@ = other arguments
499 * Use: Informs all admin connections of a warning.
502 void a_warn(const char *fmt, ...)
508 a_valert(0, 0, "WARN", fmt, &ap);
511 fprintf(stderr, "%s: ", QUIS);
512 a_vformat(&d, fmt, &ap);
514 dstr_write(&d, stderr);
520 /* --- @a_trace@ --- *
522 * Arguments: @const char *p@ = pointer to a buffer
523 * @size_t sz@ = size of the buffer
524 * @void *v@ = uninteresting pointer
528 * Use: Custom trace output handler. Sends trace messages to
529 * interested admin connections.
533 static void a_trace(const char *p, size_t sz, void *v)
534 { a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); }
537 /* --- @a_notify@ --- *
539 * Arguments: @const char *fmt@ = pointer to format string
540 * @...@ = other arguments
544 * Use: Sends a notification to interested admin connections.
547 void a_notify(const char *fmt, ...)
552 a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, &ap);
556 /* --- @a_quit@ --- *
562 * Use: Shuts things down nicely.
568 FOREACH_PEER(p, { p_destroy(p, 1); });
573 /* --- @a_sigdie@ --- *
575 * Arguments: @int sig@ = signal number
576 * @void *v@ = an uninteresting argument
580 * Use Shuts down on receipt of a fatal signal.
583 static void a_sigdie(int sig, void *v)
589 case SIGTERM: p = "SIGTERM"; break;
590 case SIGINT: p = "SIGINT"; break;
592 sprintf(buf, "%i", sig);
596 a_warn("SERVER", "quit", "signal", "%s", p, A_END);
600 /* --- @a_sighup@ --- *
602 * Arguments: @int sig@ = signal number
603 * @void *v@ = an uninteresting argument
607 * Use Logs a message about SIGHUP not being useful.
610 static void a_sighup(int sig, void *v)
611 { a_warn("SERVER", "ignore", "signal", "SIGHUP", A_END); }
613 /* --- @a_parsetime@ --- *
615 * Arguments; @const char *p@ = time string to parse
617 * Returns: Time in seconds, or @< 0@ on error.
620 static long a_parsetime(const char *p)
623 long t = strtol(p, &q, 0);
629 case 's': if (q[1] != 0)
636 /* --- @a_findpeer@ --- *
638 * Arguments: @admin *a@ = admin connection
639 * @const char *pn@ = peer name
641 * Returns: The peer, or null if not there.
643 * Use: Finds a peer, reporting an error if it failed.
646 static peer *a_findpeer(admin *a, const char *pn)
650 if ((p = p_find(pn)) == 0)
651 a_fail(a, "unknown-peer", "%s", pn, A_END);
655 /*----- Backgrounded operations -------------------------------------------*/
658 (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>")
660 /* --- @a_bgfind@ --- *
662 * Arguments: @admin *a@ = a client block
663 * @const char *tag@ = the requested tag
665 * Returns: The requested background job, or null.
668 static admin_bgop *a_bgfind(admin *a, const char *tag)
672 for (bg = a->bg; bg; bg = bg->next) {
673 if (bg->tag && strcmp(tag, bg->tag) == 0)
679 /* --- @a_bgrelease@ --- *
681 * Arguments: @admin_bgop *bg@ = backgrounded operation
685 * Use: Removes a backgrounded operation from the queue, since
686 * (presumably) it's done.
689 static void a_bgrelease(admin_bgop *bg)
693 T( trace(T_ADMIN, "admin: release bgop %s", BGTAG(bg)); )
694 if (bg->tag) xfree(bg->tag);
695 else selbuf_enable(&a->b);
696 if (bg->next) bg->next->prev = bg->prev;
697 if (bg->prev) bg->prev->next = bg->next;
698 else a->bg = bg->next;
700 if (!a->bg && (a->f & AF_CLOSE)) a_destroy(a);
703 /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- *
705 * Arguments: @admin_bgop *bg@ = backgrounded operation
706 * @const char *fmt@ = format string
707 * @...@ = other arguments
711 * Use: Convenience functions for @a_write@.
714 static void a_bgok(admin_bgop *bg)
715 { a_write(bg->a, "OK", bg->tag, A_END); }
717 static void a_bginfo(admin_bgop *bg, const char *fmt, ...)
721 a_vwrite(bg->a, "INFO", bg->tag, fmt, &ap);
725 static void a_bgfail(admin_bgop *bg, const char *fmt, ...)
729 a_vwrite(bg->a, "FAIL", bg->tag, fmt, &ap);
733 /* --- @a_bgadd@ --- *
735 * Arguments: @admin *a@ = administration connection
736 * @admin_bgop *bg@ = pointer to background operation
737 * @const char *tag@ = background tag, or null for foreground
738 * @void (*cancel)(admin_bgop *)@ = cancel function
740 * Returns: Zero for success, nonzero on failure.
742 * Use: Links a background job into the list.
745 static int a_bgadd(admin *a, admin_bgop *bg, const char *tag,
746 void (*cancel)(admin_bgop *))
749 if (a_bgfind(a, tag)) {
750 a_fail(a, "tag-exists", "%s", tag, A_END);
753 bg->tag = xstrdup(tag);
757 selbuf_disable(&a->b);
763 if (a->bg) a->bg->prev = bg;
765 T( trace(T_ADMIN, "admin: add bgop %s", BGTAG(bg)); )
766 if (tag) a_write(a, "DETACH", tag, A_END);
770 /*----- Job table manipulation --------------------------------------------*/
773 #define JOB_INDEXMASK ((1ul << JOB_SHIFT) - 1)
774 #define JOB_SEQMASK ((1ul << (32 - JOB_SHIFT)) - 1)
776 #define JOB_END 0xfffffffful
778 static unsigned long a_joboffset;
780 /* --- @a_jobidencode@ --- *
782 * Arguments: @admin_svcop *svc@ = pointer to a service operation
784 * Returns: A jobid for this job, in an internal static buffer.
786 * Use: Constructs a jobid. In order to dissuade people from
787 * predicting jobids, we obfuscate them.
789 * A `raw' jobid consists of two 16-bit fields. The low 16 bits
790 * are an index into a big array. The high 16 bits are a
791 * sequence number recording how many times that slot has been
794 * This `raw' jobid is then obfuscated by adding a randomly-
795 * generated offset, and multiplying (mod %$2^{32}$%) by a fixed
799 static const char *a_jobidencode(admin_svcop *svc)
801 admin_jobtable *j = &svc->prov->j;
806 assert(svc->index <= JOB_INDEXMASK);
807 seq = j->v[svc->index].seq;
808 assert(seq <= JOB_SEQMASK);
809 pre = (unsigned long)svc->index | ((unsigned long)seq << JOB_SHIFT);
810 sprintf(buf, "J%08lx", ((pre + a_joboffset) * 0x0f87a7a3ul) & 0xffffffff);
814 /* --- @a_jobiddecode@ --- *
816 * Arguments: @admin_jobtable *j@ = pointer to a job table
817 * @const char *jid@ = pointer to a jobid string
819 * Returns: A pointer to the job's @svcop@ structure.
822 static admin_svcop *a_jobiddecode(admin_jobtable *j, const char *jid)
829 for (i = 1; i < 9; i++) {
830 if (!isxdigit((unsigned char)jid[i]))
835 pre = strtoul(jid + 1, 0, 16);
836 pre = ((pre * 0xbd11c40bul) - a_joboffset) & 0xffffffff;
837 i = pre & JOB_INDEXMASK;
838 if (i >= j->n || j->v[i].seq != (pre >> JOB_SHIFT))
840 return (j->v[i].u.op);
843 /* --- @a_jobcreate@ --- *
845 * Arguments: @admin *a@ = pointer to administration client
847 * Returns: A pointer to a freshly-allocated @svcop@, or null.
849 * Use: Allocates a fresh @svcop@ and links it into a job table.
852 static admin_svcop *a_jobcreate(admin *a)
857 admin_jobtable *j = &a->j;
859 if (j->free != JOB_END) {
861 j->free = j->v[i].u.next;
864 if (j->sz > JOB_INDEXMASK)
869 j->v = xmalloc(j->sz * sizeof(*j->v));
872 j->v = xrealloc(j->v, j->sz * sizeof(*j->v), sz * sizeof(*j->v));
878 svc = xmalloc(sizeof(*svc));
881 svc->next = j->active;
883 if (j->active) j->active->prev = svc;
886 IF_TRACING(T_ADMIN, {
887 trace(T_ADMIN, "admin: created job %s (%u)", a_jobidencode(svc), i);
892 /* --- @a_jobdestroy@ --- *
894 * Arguments: @admin_svcop *svc@ = pointer to job block
898 * Use: Frees up a completed (or cancelled) job.
901 static void a_jobdestroy(admin_svcop *svc)
903 admin *a = svc->prov;
904 admin_jobtable *j = &a->j;
905 unsigned i = svc->index;
907 IF_TRACING(T_ADMIN, {
908 trace(T_ADMIN, "admin: destroying job %s (%u)", a_jobidencode(svc), i);
910 assert(j->v[i].u.op = svc);
911 j->v[i].u.next = j->free;
914 if (svc->next) svc->next->prev = svc->prev;
915 if (svc->prev) svc->prev->next = svc->next;
916 else j->active = svc->next;
919 /* --- @a_jobtableinit@ --- *
921 * Arguments: @admin_jobtable *j@ = pointer to job table
925 * Use: Initializes a job table.
928 static void a_jobtableinit(admin_jobtable *j)
931 a_joboffset = GR_RANGE(&rand_global, 0xffffffff) + 1;
938 /* --- @a_jobtablefinal@ --- *
940 * Arguments: @admin_jobtable *j@ = pointer to job table
944 * Use: Closes down a job table.
947 static void a_jobtablefinal(admin_jobtable *j)
949 admin_svcop *svc, *ssvc;
951 for (svc = j->active; svc; svc = ssvc) {
953 a_bgfail(&svc->bg, "provider-failed", A_END);
954 a_bgrelease(&svc->bg);
956 if (j->v) xfree(j->v);
959 /*----- Services infrastructure -------------------------------------------*/
961 /* --- @a_svcfind@ --- *
963 * Arguments: @admin *a@ = the requesting client
964 * @const char *name@ = service name wanted
966 * Returns: The service requested, or null.
968 * Use: Finds a service; reports an error if the service couldn't be
972 static admin_service *a_svcfind(admin *a, const char *name)
976 if ((svc = sym_find(&a_svcs, name, -1, 0, 0)) == 0) {
977 a_fail(a, "unknown-service", "%s", name, A_END);
983 /* --- @a_svcunlink@ --- *
985 * Arguments: @admin_service *svc@ = pointer to service structure
989 * Use: Unlinks the service from its provider, without issuing a
990 * message or freeing the structure. The version string is
994 static void a_svcunlink(admin_service *svc)
997 svc->next->prev = svc->prev;
999 svc->prev->next = svc->next;
1001 svc->prov->svcs = svc->next;
1002 xfree(svc->version);
1005 /* --- @a_svcrelease@ --- *
1007 * Arguments: @admin_service *svc@ = pointer to service structure
1011 * Use: Releases a service and frees its structure.
1014 static void a_svcrelease(admin_service *svc)
1016 a_notify("SVCRELEASE", "%s", SYM_NAME(svc), A_END);
1018 sym_remove(&a_svcs, svc);
1021 /*----- Name resolution operations ----------------------------------------*/
1025 /* --- @before_select@ --- *
1027 * Arguments: @sel_state *s@ = the @sel@ multiplexor (unused)
1028 * @sel_args *a@ = input to @select@, to be updated
1029 * @void *p@ = a context pointer (unused)
1033 * Use: An I/O multiplexor hook, called just before waiting for I/O
1036 * Currently its main purpose is to wire ADNS into the event
1040 static void before_select(sel_state *s, sel_args *a, void *p)
1048 /* --- Check for name-resolution progress --- *
1050 * If there is any, then clobber the timeout: one of the resolver
1051 * callbacks might have renewed its interest in a file descriptor, but too
1052 * late to affect this @select@ call.
1054 * I think, strictly, this is an mLib bug, but it's cheap enough to hack
1055 * around here. Fixing it will wait for mLib 3.
1060 if (adns_check(ads, &q, &n, &p)) break;
1063 if (n->status != adns_s_ok) {
1064 T( trace(T_ADMIN, "admin: resop %s failed: %s",
1065 BGTAG(r), adns_strerror(n->status)); )
1066 a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END);
1067 r->func(r, ARES_FAIL);
1069 T( trace(T_ADMIN, "admin: resop %s ok", BGTAG(r)); )
1070 assert(n->type == adns_r_addr);
1071 assert(n->nrrs > 0);
1072 assert(n->rrs.addr[0].len <= sizeof(r->sa));
1073 memcpy(&r->sa, &n->rrs.addr[0].addr, n->rrs.addr[0].len);
1074 setport(&r->sa, r->port);
1075 r->func(r, ARES_OK);
1080 a_bgrelease(&r->bg);
1083 if (any) { a->tvp = &a->tv; a->tv.tv_sec = 0; a->tv.tv_usec = 0; }
1085 gettimeofday(&now, 0);
1086 adns_beforeselect(ads, &a->maxfd,
1087 &a->fd[SEL_READ], &a->fd[SEL_WRITE], &a->fd[SEL_EXC],
1088 &a->tvp, &a->tv, &now);
1091 /* --- @after_select@ --- *
1093 * Arguments: @sel_state *s@ = the @sel@ multiplexor (unused)
1094 * @sel_args *a@ = input to @select@, to be updated
1095 * @void *p@ = a context pointer (unused)
1099 * Use: An I/O multiplexor hook, called just after waiting for I/O
1102 * Currently its main purpose is to wire ADNS into the event
1106 static void after_select(sel_state *s, sel_args *a, void *p)
1110 gettimeofday(&now, 0);
1111 adns_afterselect(ads, a->maxfd,
1112 &a->fd[SEL_READ], &a->fd[SEL_WRITE], &a->fd[SEL_EXC],
1118 /* --- @a_resolved@ --- *
1120 * Arguments: @struct hostent *h@ = pointer to resolved hostname
1121 * @void *v@ = pointer to resolver operation
1125 * Use: Handles a completed name resolution.
1128 static void a_resolved(struct hostent *h, void *v)
1134 T( trace(T_ADMIN, "admin: resop %s failed: %s",
1135 BGTAG(r), hstrerror(h_errno)); )
1136 a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END);
1137 r->func(r, ARES_FAIL);
1139 T( trace(T_ADMIN, "admin: resop %s ok", BGTAG(r)); )
1140 r->sa.sin.sin_family = AF_INET;
1141 memcpy(&r->sa.sin.sin_addr, h->h_addr, sizeof(struct in_addr));
1142 setport(&r->sa, r->port);
1143 r->func(r, ARES_OK);
1147 a_bgrelease(&r->bg);
1152 /* --- @a_restimer@ --- *
1154 * Arguments: @struct timeval *tv@ = timer
1155 * @void *v@ = pointer to resolver operation
1159 * Use: Times out a resolver.
1162 static void a_restimer(struct timeval *tv, void *v)
1166 T( trace(T_ADMIN, "admin: resop %s timeout", BGTAG(r)); )
1167 a_bgfail(&r->bg, "resolver-timeout", "%s", r->addr, A_END);
1168 r->func(r, ARES_FAIL);
1175 a_bgrelease(&r->bg);
1178 /* --- @a_rescancel@ --- *
1180 * Arguments: @admin_bgop *bg@ = background operation
1184 * Use: Cancels an add operation.
1187 static void a_rescancel(admin_bgop *bg)
1189 admin_resop *r = (admin_resop *)bg;
1191 T( trace(T_ADMIN, "admin: cancel resop %s", BGTAG(r)); )
1192 r->func(r, ARES_FAIL);
1202 /* --- @a_resolve@ --- *
1204 * Arguments: @admin *a@ = administration connection
1205 * @admin_resop *r@ = resolver operation to run
1206 * @const char *tag@ = background operation tag
1207 * @void (*func)(struct admin_resop *, int@ = handler function
1208 * @unsigned ac@ = number of remaining arguments
1209 * @char *av[]@ = pointer to remaining arguments
1213 * Use: Cranks up a resolver job.
1216 static void a_resolve(admin *a, admin_resop *r, const char *tag,
1217 void (*func)(struct admin_resop *, int),
1218 unsigned ac, char *av[])
1223 const char *fam = "ANY";
1226 struct addrinfo *ai, *ailist, aihint = { 0 };
1232 /* --- Fill in the easy bits of address --- */
1234 r->bg.tag = "<starting>";
1237 if (mystrieq(av[i], "any"))
1238 { fam = "ANY"; af = AF_UNSPEC; i++; }
1239 else for (j = 0; j < NADDRFAM; j++) {
1240 if (mystrieq(av[i], aftab[j].name)) {
1241 if (udpsock[j].sf.fd < 0) {
1242 a_fail(a, "disabled-address-family", "%s", aftab[j].name, A_END);
1245 fam = aftab[j].name;
1251 if (ac - i != 1 && ac - i != 2) {
1252 a_fail(a, "bad-addr-syntax", "[FAMILY] ADDRESS [PORT]", A_END);
1255 r->addr = xstrdup(av[i]);
1259 pt = strtoul(av[i + 1], &p, 0);
1261 struct servent *s = getservbyname(av[i + 1], "udp");
1263 a_fail(a, "unknown-service", "%s", av[i + 1], A_END);
1266 pt = ntohs(s->s_port);
1269 if (pt == 0 || pt >= 65536) {
1270 a_fail(a, "invalid-port", "%lu", pt, A_END);
1275 /* --- Report backgrounding --- *
1277 * Do this for consistency of interface, even if we're going to get the
1278 * answer straight away.
1281 if (a_bgadd(a, &r->bg, tag, a_rescancel))
1283 T( trace(T_ADMIN, "admin: %u, resop %s, hostname `%s', family `%s'",
1284 a->seq, BGTAG(r), r->addr, fam); )
1286 /* --- If the name is numeric, do it the easy way --- */
1288 aihint.ai_family = af;
1289 aihint.ai_socktype = SOCK_DGRAM;
1290 aihint.ai_protocol = IPPROTO_UDP;
1291 aihint.ai_flags = AI_NUMERICHOST;
1292 if (!getaddrinfo(av[i], 0, &aihint, &ailist)) {
1293 for (ai = ailist; ai; ai = ai->ai_next) {
1294 if ((j = afix(ai->ai_family)) >= 0 && udpsock[j].sf.fd >= 0)
1298 T( trace(T_ADMIN, "admin: resop %s failed: "
1299 "no suitable addresses returned", BGTAG(r)); )
1300 a_bgfail(&r->bg, "resolve-error", "%s" , r->addr, A_END);
1303 T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); )
1304 assert(ai->ai_addrlen <= sizeof(r->sa));
1305 memcpy(&r->sa, ai->ai_addr, ai->ai_addrlen);
1306 setport(&r->sa, r->port);
1309 freeaddrinfo(ailist);
1311 a_bgrelease(&r->bg);
1315 /* --- Store everything for later and crank up the resolver --- */
1317 gettimeofday(&tv, 0);
1318 tv.tv_sec += T_RESOLVE;
1319 sel_addtimer(&sel, &r->t, &tv, a_restimer, r);
1321 qf = adns_qf_search;
1322 for (j = 0; j < NADDRFAM; j++) {
1323 if ((af == AF_UNSPEC || af == aftab[i].af) && udpsock[j].sf.fd >= 0)
1326 if ((err = adns_submit(ads, r->addr, adns_r_addr, qf, r, &r->q)) != 0) {
1327 T( trace(T_ADMIN, "admin: resop %s adns_submit failed: %s",
1328 BGTAG(r), strerror(err)); )
1329 a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END);
1333 if (af != AF_UNSPEC && af != AF_INET) {
1334 T( trace(T_ADMIN, "admin: resop %s failed: unsupported address family",
1336 a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END);
1339 if (udpsock[AFIX_INET].sf.fd < 0) {
1340 a_bgfail(&r->bg, "disabled-address-family", "INET", A_END);
1343 bres_byname(&r->r, r->addr, a_resolved, r);
1349 if (r->addr) xfree(r->addr);
1356 a_bgrelease(&r->bg);
1359 /*----- Option parsing ----------------------------------------------------*/
1361 #define OPTIONS(argc, argv, guts) do { \
1362 char **o_av = argv; \
1366 if (mystrieq(*o_av, "--")) { \
1371 if (**o_av == '-') \
1375 argc -= o_av - argv; \
1379 #define OPT(name, guts) if (mystrieq(*o_av, name)) { guts continue; }
1381 #define OPTARG(name, arg, guts) OPT(name, { \
1384 if (!arg) goto bad_syntax; \
1388 #define OPTTIME(name, arg, guts) OPTARG(name, o_arg, { \
1390 if ((arg = a_parsetime(o_arg)) < 0) { \
1391 a_fail(a, "bad-time-spec", "%s", o_arg, A_END); \
1397 /*----- Adding peers ------------------------------------------------------*/
1399 /* --- @a_doadd@ --- *
1401 * Arguments: @admin_resop *r@ = resolver operation
1402 * @int rc@ = how it worked
1406 * Use: Handles a completed resolution.
1409 static void a_doadd(admin_resop *r, int rc)
1411 admin_addop *add = (admin_addop *)r;
1413 T( trace(T_ADMIN, "admin: done add op %s", BGTAG(add)); )
1415 if (rc == ARES_OK) {
1416 add->peer.sa = add->r.sa;
1417 if (p_findbyaddr(&add->r.sa))
1418 a_bgfail(&add->r.bg, "peer-addr-exists", "?ADDR", &add->r.sa, A_END);
1419 else if (p_find(add->peer.name))
1420 a_bgfail(&add->r.bg, "peer-exists", "%s", add->peer.name, A_END);
1421 else if (!p_create(&add->peer))
1422 a_bgfail(&add->r.bg, "peer-create-fail", "%s", add->peer.name, A_END);
1427 if (add->peer.tag) xfree(add->peer.tag);
1428 if (add->peer.privtag) xfree(add->peer.privtag);
1429 if (add->peer.knock) xfree(add->peer.knock);
1430 xfree(add->peer.name);
1433 /* --- @acmd_add@ --- *
1435 * Arguments: @admin *a@ = connection which requested the addition
1436 * @unsigned ac@ = argument count
1437 * @char *av[]@ = pointer to the argument list
1441 * Use: Adds a new peer.
1444 static void acmd_add(admin *a, unsigned ac, char *av[])
1446 const char *tag = 0;
1449 /* --- Set stuff up --- */
1451 add = xmalloc(sizeof(*add));
1454 add->peer.privtag = 0;
1455 add->peer.knock = 0;
1457 add->peer.tops = tun_default;
1460 /* --- Parse options --- */
1463 OPTARG("-background", arg, { tag = arg; })
1464 OPTARG("-tunnel", arg, {
1468 a_fail(a, "unknown-tunnel", "%s", arg, A_END);
1471 if (mystrieq(arg, tunnels[i]->name)) {
1472 add->peer.tops = tunnels[i];
1477 OPTTIME("-keepalive", t, { add->peer.t_ka = t; })
1478 OPT("-cork", { add->peer.f |= KXF_CORK; })
1479 OPT("-ephemeral", { add->peer.f |= PSF_EPHEM; })
1480 OPTARG("-key", arg, {
1481 if (add->peer.tag) xfree(add->peer.tag);
1482 add->peer.tag = xstrdup(arg);
1484 OPT("-mobile", { add->peer.f |= PSF_MOBILE | PSF_EPHEM; })
1485 OPTARG("-priv", arg, {
1486 if (add->peer.privtag) xfree(add->peer.privtag);
1487 add->peer.privtag = xstrdup(arg);
1489 OPTARG("-knock", arg, {
1490 if (add->peer.knock) xfree(add->peer.knock);
1491 add->peer.knock = xstrdup(arg);
1492 add->peer.f |= PSF_EPHEM;
1496 /* --- Make sure someone's not got there already --- */
1498 if (!av[0] || !av[1])
1501 a_fail(a, "peer-exists", "%s", *av, A_END);
1504 add->peer.name = xstrdup(*av++);
1507 /* --- Crank up the resolver --- */
1509 a_resolve(a, &add->r, tag, a_doadd, ac, av);
1512 /* --- Clearing up --- */
1515 a_fail(a, "bad-syntax", "add", "[OPTIONS] PEER ADDR ...", A_END);
1517 if (add->peer.name) xfree(add->peer.name);
1518 if (add->peer.tag) xfree(add->peer.tag);
1519 if (add->peer.privtag) xfree(add->peer.privtag);
1520 if (add->peer.knock) xfree(add->peer.knock);
1525 /*----- Ping --------------------------------------------------------------*/
1527 /* --- @a_pingcancel@ --- *
1529 * Arguments: @admin_bgop *bg@ = background operation block
1533 * Use: Cancels a running ping.
1536 static void a_pingcancel(admin_bgop *bg)
1538 admin_pingop *pg = (admin_pingop *)bg;
1539 T( trace(T_ADMIN, "admin: cancel ping op %s", BGTAG(pg)); )
1540 p_pingdone(&pg->ping, PING_NONOTIFY);
1543 /* --- @a_pong@ --- *
1545 * Arguments: @int rc@ = return code
1546 * @void *v@ = ping operation block
1550 * Use: Collects what happened to a ping message.
1553 static void a_pong(int rc, void *v)
1555 admin_pingop *pg = v;
1561 gettimeofday(&tv, 0);
1562 tv_sub(&tv, &tv, &pg->pingtime);
1563 millis = (double)tv.tv_sec * 1000 + (double)tv.tv_usec/1000;
1564 a_bginfo(&pg->bg, "ping-ok", "%.1f", millis, A_END);
1568 a_bginfo(&pg->bg, "ping-timeout", A_END);
1572 a_bginfo(&pg->bg, "ping-peer-died", A_END);
1578 T( trace(T_ADMIN, "admin: ponged ping op %s", BGTAG(pg)); )
1579 a_bgrelease(&pg->bg);
1582 /* --- @acmd_ping@, @acmd_eping@ --- *
1584 * Arguments: @admin *a@ = connection which requested the ping
1585 * @unsigned ac@ = argument count
1586 * @char *av[]@ = pointer to the argument list
1590 * Use: Pings a peer.
1593 static void a_ping(admin *a, unsigned ac, char *av[],
1594 const char *cmd, unsigned msg)
1598 admin_pingop *pg = 0;
1599 const char *tag = 0;
1602 OPTARG("-background", arg, { tag = arg; })
1603 OPTTIME("-timeout", arg, { t = arg; })
1605 if (!*av || av[1]) goto bad_syntax;
1606 if ((p = a_findpeer(a, *av)) == 0)
1608 pg = xmalloc(sizeof(*pg));
1609 gettimeofday(&pg->pingtime, 0);
1610 if (a_bgadd(a, &pg->bg, tag, a_pingcancel))
1612 T( trace(T_ADMIN, "admin: ping op %s: %s to %s",
1613 BGTAG(pg), cmd, p_name(p)); )
1614 if (p_pingsend(p, &pg->ping, msg, t, a_pong, pg)) {
1615 a_bgfail(&pg->bg, "ping-send-failed", A_END);
1616 a_bgrelease(&pg->bg);
1621 a_fail(a, "bad-syntax", "%s", cmd, "[OPTIONS] PEER", cmd, A_END);
1627 static void acmd_ping(admin *a, unsigned ac, char *av[])
1628 { a_ping(a, ac, av, "ping", MISC_PING); }
1629 static void acmd_eping(admin *a, unsigned ac, char *av[])
1630 { a_ping(a, ac, av, "eping", MISC_EPING); }
1632 /*----- Service commands --------------------------------------------------*/
1634 static void acmd_svcclaim(admin *a, unsigned ac, char *av[])
1639 svc = sym_find(&a_svcs, av[0], -1, sizeof(*svc), &f);
1641 if (versioncmp(av[1], svc->version) <= 0) {
1644 "%s", SYM_NAME(svc),
1649 a_write(svc->prov, "SVCCLAIM", 0, "%s", av[0], "%s", av[1], A_END);
1653 svc->version = xstrdup(av[1]);
1654 svc->next = a->svcs;
1656 if (a->svcs) a->svcs->prev = svc;
1658 a_notify("SVCCLAIM", "%s", SYM_NAME(svc), "%s", svc->version, A_END);
1662 static void acmd_svcrelease(admin *a, unsigned ac, char *av[])
1666 if ((svc = a_svcfind(a, av[0])) == 0)
1668 if (svc->prov != a) {
1669 a_fail(a, "not-service-provider", "%s", SYM_NAME(svc), A_END);
1676 static void acmd_svcensure(admin *a, unsigned ac, char *av[])
1680 if ((svc = a_svcfind(a, av[0])) == 0)
1682 if (av[1] && versioncmp(svc->version, av[1]) < 0) {
1683 a_fail(a, "service-too-old",
1684 "%s", SYM_NAME(svc),
1692 static void acmd_svcquery(admin *a, unsigned ac, char *av[])
1696 if ((svc = a_svcfind(a, av[0])) != 0) {
1697 a_info(a, "name=%s", SYM_NAME(svc), "version=%s", svc->version, A_END);
1702 static void acmd_svclist(admin *a, unsigned ac, char *av[])
1707 for (sym_mkiter(&i, &a_svcs); (svc = sym_next(&i)) != 0; )
1708 a_info(a, "%s", SYM_NAME(svc), "%s", svc->version, A_END);
1712 static void a_canceljob(admin_bgop *bg)
1714 admin_svcop *svc = (admin_svcop *)bg;
1716 a_write(svc->prov, "SVCCANCEL", 0, "%s", a_jobidencode(svc), A_END);
1720 static void acmd_svcsubmit(admin *a, unsigned ac, char *av[])
1722 const char *tag = 0;
1725 const char *ver = 0;
1729 OPTARG("-background", arg, { tag = arg; })
1730 OPTARG("-version", arg, { ver = arg; })
1732 if (!*av) goto bad_syntax;
1733 if ((svc = a_svcfind(a, *av)) == 0) goto fail;
1734 if (ver && versioncmp(svc->version, ver) < 0) {
1735 a_fail(a, "service-too-old",
1736 "%s", SYM_NAME(svc),
1741 if ((svcop = a_jobcreate(svc->prov)) == 0) {
1742 a_fail(a, "provider-overloaded", A_END);
1745 if (a_bgadd(a, &svcop->bg, tag, a_canceljob)) {
1746 a_jobdestroy(svcop);
1749 a_write(svc->prov, "SVCJOB", 0,
1750 "%s", a_jobidencode(svcop),
1756 a_fail(a, "bad-syntax", "svcsubmit", "[OPTIONS] SERVICE ARGS...", A_END);
1763 static void a_replycmd(admin *a, const char *status, int donep, char *av[])
1767 if ((svc = a_jobiddecode(&a->j, av[0])) == 0) {
1768 a_fail(a, "unknown-jobid", av[0], A_END);
1771 a_write(svc->bg.a, status, svc->bg.tag, "?TOKENS", av + 1, A_END);
1774 a_bgrelease(&svc->bg);
1779 static void acmd_svcok(admin *a, unsigned ac, char *av[])
1780 { a_replycmd(a, "OK", 1, av); }
1781 static void acmd_svcinfo(admin *a, unsigned ac, char *av[])
1782 { a_replycmd(a, "INFO", 0, av); }
1783 static void acmd_svcfail(admin *a, unsigned ac, char *av[])
1784 { a_replycmd(a, "FAIL", 1, av); }
1786 /*----- Administration commands -------------------------------------------*/
1788 /* --- Miscellaneous commands --- */
1790 /* --- @traceish@ --- *
1792 * Arguments: @admin *a@ = connection to complain on
1793 * @unsigned ac@ = number of arguments
1794 * @char *av[]@ = vector of arguments
1795 * @const char *what@ = what we're messing with
1796 * @const trace_opt *tt@ = options table
1797 * @unsigned *ff@ = where the flags are
1799 * Returns: Nonzero if anything changed.
1801 * Use: Guts of trace-ish commands like `trace' and `watch'.
1804 static int traceish(admin *a, unsigned ac, char *av[],
1805 const char *what, const trace_opt *tt, unsigned *ff)
1809 if (!ac || strcmp(av[0], "?") == 0) {
1811 for (t = tt; t->ch; t++) {
1812 a_info(a, "*%c%c %s",
1813 t->ch, (*ff & t->f) == t->f ? '+' : ' ', t->help, A_END);
1823 case '+': sense = 1; break;
1824 case '-': sense = 0; break;
1826 for (t = tt; t->ch; t++) {
1828 if (sense) f |= t->f;
1833 a_fail(a, "bad-%s-option", what, "%c", *p, A_END);
1849 static void acmd_trace(admin *a, unsigned ac, char *av[])
1851 if (traceish(a, ac, av, "trace", tr_opts, &tr_flags))
1852 trace_level(tr_flags);
1857 static void acmd_watch(admin *a, unsigned ac, char *av[])
1858 { traceish(a, ac, av, "watch", w_opts, &a->f); }
1860 static void alertcmd(admin *a, unsigned f_and, unsigned f_eq,
1861 const char *status, char *av[])
1862 { a_alert(f_and, f_eq, status, "USER", "?TOKENS", av, A_END); a_ok(a); }
1863 static void acmd_notify(admin *a, unsigned ac, char *av[])
1864 { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", av); }
1865 static void acmd_warn(admin *a, unsigned ac, char *av[])
1866 { alertcmd(a, AF_WARN, AF_WARN, "WARN", av); }
1868 static void acmd_port(admin *a, unsigned ac, char *av[])
1873 for (i = 0; i < NADDRFAM; i++)
1874 if (mystrieq(av[0], aftab[i].name)) goto found;
1875 a_fail(a, "unknown-address-family", "%s", av[0], A_END);
1878 if (udpsock[i].sf.fd < 0) {
1879 a_fail(a, "disabled-address-family", "%s", aftab[i].name, A_END);
1883 for (i = 0; i < NADDRFAM; i++)
1884 if (udpsock[i].sf.fd >= 0) goto found;
1887 a_info(a, "%u", udpsock[i].port, A_END);
1891 static void acmd_daemon(admin *a, unsigned ac, char *av[])
1893 if (flags & F_DAEMON)
1894 a_fail(a, "already-daemon", A_END);
1896 a_notify("DAEMON", A_END);
1900 a_fail(a, "daemon-error", "?ERRNO", A_END);
1908 static void acmd_jobs(admin *a, unsigned ac, char *av[])
1912 for (bg = a->bg; bg; bg = bg->next) {
1914 a_info(a, "%s", bg->tag, A_END);
1919 static void acmd_bgcancel(admin *a, unsigned ac, char *av[])
1923 if ((bg = a_bgfind(a, av[0])) == 0)
1924 a_fail(a, "unknown-tag", "%s", av[0], A_END);
1932 static void acmd_algs(admin *a, unsigned ac, char *av[])
1937 const algswitch *algs;
1942 if ((p = a_findpeer(a, av[0])) == 0) return;
1948 g->ops->grpinfo(g, a);
1950 "hash=%s", algs->h->name,
1951 "mgf=%s", algs->mgf->name,
1952 "hash-sz=%lu", (unsigned long)algs->h->hashsz,
1955 "bulk-transform=%s", algs->bulk->ops->name,
1956 "bulk-overhead=%lu",
1957 (unsigned long)algs->bulk->ops->overhead(algs->bulk),
1959 algs->bulk->ops->alginfo(algs->bulk, a);
1961 "cipher-data-limit=%lu",
1962 (unsigned long)algs->bulk->ops->expsz(algs->bulk),
1967 static void acmd_list(admin *a, unsigned ac, char *av[])
1969 FOREACH_PEER(p, { a_info(a, "%s", p_name(p), A_END); });
1973 static void acmd_ifname(admin *a, unsigned ac, char *av[])
1977 if ((p = a_findpeer(a, av[0])) != 0) {
1978 a_info(a, "%s", p_ifname(p), A_END);
1983 static void acmd_setifname(admin *a, unsigned ac, char *av[])
1987 if ((p = a_findpeer(a, av[0])) != 0) {
1988 a_notify("NEWIFNAME", "?PEER", p, "%s", p_ifname(p), "%s", av[1], A_END);
1989 p_setifname(p, av[1]);
1994 static void acmd_getchal(admin *a, unsigned ac, char *av[])
1998 buf_init(&b, buf_i, PKBUFSZ);
2000 a_info(a, "?B64", BBASE(&b), (size_t)BLEN(&b), A_END);
2004 static void acmd_checkchal(admin *a, unsigned ac, char *av[])
2006 codec *b64 = base64_class.decoder(CDCF_NOEQPAD);
2011 if ((err = b64->ops->code(b64, av[0], strlen(av[0]), &d)) != 0 ||
2012 (err = b64->ops->code(b64, 0, 0, &d)) != 0)
2013 a_fail(a, "bad-base64", "%s", codec_strerror(err), A_END);
2015 buf_init(&b, d.buf, d.len);
2016 if (c_check(0, 0, &b) || BBAD(&b) || BLEFT(&b))
2017 a_fail(a, "invalid-challenge", A_END);
2021 b64->ops->destroy(b64);
2025 static void acmd_greet(admin *a, unsigned ac, char *av[])
2032 if ((p = a_findpeer(a, av[0])) == 0) return;
2033 b64 = base64_class.decoder(CDCF_NOEQPAD);
2034 if ((err = b64->ops->code(b64, av[1], strlen(av[1]), &d)) != 0 ||
2035 (err = b64->ops->code(b64, 0, 0, &d)) != 0)
2036 a_fail(a, "bad-base64", "%s", codec_strerror(err), A_END);
2038 p_greet(p, d.buf, d.len);
2041 b64->ops->destroy(b64);
2045 static void acmd_addr(admin *a, unsigned ac, char *av[])
2050 if ((p = a_findpeer(a, av[0])) != 0) {
2052 a_info(a, "?ADDR", ad, A_END);
2057 static void acmd_peerinfo(admin *a, unsigned ac, char *av[])
2063 if ((p = a_findpeer(a, av[0])) != 0) {
2065 a_info(a, "tunnel=%s", ps->tops->name, A_END);
2066 if (ps->knock) a_info(a, "knock=%s", ps->knock, A_END);
2067 a_info(a, "key=%s", p_tag(p),
2068 "current-key=%s", p->kx.kpub->tag, A_END);
2069 if ((ptag = p_privtag(p)) == 0) ptag = "(default)";
2070 a_info(a, "private-key=%s", ptag,
2071 "current-private-key=%s", p->kx.kpriv->tag, A_END);
2072 a_info(a, "keepalive=%lu", ps->t_ka, A_END);
2073 a_info(a, "corked=%s", BOOL(p->kx.f&KXF_CORK),
2074 "mobile=%s", BOOL(ps->f&PSF_MOBILE),
2075 "ephemeral=%s", BOOL(ps->f&PSF_EPHEM),
2081 static void acmd_servinfo(admin *a, unsigned ac, char *av[])
2083 a_info(a, "implementation=edgeware-tripe", A_END);
2084 a_info(a, "version=%s", VERSION, A_END);
2085 a_info(a, "daemon=%s", BOOL(flags & F_DAEMON), A_END);
2089 static void acmd_stats(admin *a, unsigned ac, char *av[])
2094 if ((p = a_findpeer(a, av[0])) == 0)
2098 a_info(a, "start-time=%s", timestr(st->t_start), A_END);
2099 a_info(a, "last-packet-time=%s", timestr(st->t_last), A_END);
2100 a_info(a, "last-keyexch-time=%s", timestr(st->t_kx), A_END);
2101 a_info(a, "packets-in=%lu", st->n_in, "bytes-in=%lu", st->sz_in, A_END);
2103 "packets-out=%lu", st->n_out,
2104 "bytes-out=%lu", st->sz_out,
2107 "keyexch-packets-in=%lu", st->n_kxin,
2108 "keyexch-bytes-in=%lu", st->sz_kxin,
2111 "keyexch-packets-out=%lu", st->n_kxout,
2112 "keyexch-bytes-out=%lu", st->sz_kxout,
2115 "ip-packets-in=%lu", st->n_ipin,
2116 "ip-bytes-in=%lu", st->sz_ipin,
2119 "ip-packets-out=%lu", st->n_ipout,
2120 "ip-bytes-out=%lu", st->sz_ipout,
2122 a_info(a, "rejected-packets=%lu", st->n_reject, A_END);
2126 static void acmd_kill(admin *a, unsigned ac, char *av[])
2130 if ((p = a_findpeer(a, av[0])) != 0) {
2136 static void acmd_forcekx(admin *a, unsigned ac, char *av[])
2140 if ((p = a_findpeer(a, av[0])) != 0) {
2141 kx_start(&p->kx, 1);
2146 static void acmd_reload(admin *a, unsigned ac, char *av[])
2147 { p_keyreload(); a_ok(a); }
2149 static void acmd_quit(admin *a, unsigned ac, char *av[])
2151 a_warn("SERVER", "quit", "admin-request", A_END);
2156 static void acmd_version(admin *a, unsigned ac, char *av[])
2158 a_info(a, "%s", PACKAGE, "%s", VERSION, A_END);
2162 static void acmd_tunnels(admin *a, unsigned ac, char *av[])
2166 for (i = 0; tunnels[i]; i++)
2167 a_info(a, "%s", tunnels[i]->name, A_END);
2171 /* --- The command table and help --- */
2173 typedef struct acmd {
2176 unsigned argmin, argmax;
2177 void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]);
2180 static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]);
2182 static const acmd acmdtab[] = {
2183 { "add", "[OPTIONS] PEER ADDR ...", 2, 0xffff, acmd_add },
2184 { "addr", "PEER", 1, 1, acmd_addr },
2185 { "algs", "[PEER]", 0, 1, acmd_algs },
2186 { "bgcancel", "TAG", 1, 1, acmd_bgcancel },
2187 { "checkchal", "CHAL", 1, 1, acmd_checkchal },
2188 { "daemon", 0, 0, 0, acmd_daemon },
2189 { "eping", "[OPTIONS] PEER", 1, 0xffff, acmd_eping },
2190 { "forcekx", "PEER", 1, 1, acmd_forcekx },
2191 { "getchal", 0, 0, 0, acmd_getchal },
2192 { "greet", "PEER CHAL", 2, 2, acmd_greet },
2193 { "help", 0, 0, 0, acmd_help },
2194 { "ifname", "PEER", 1, 1, acmd_ifname },
2195 { "jobs", 0, 0, 0, acmd_jobs },
2196 { "kill", "PEER", 1, 1, acmd_kill },
2197 { "list", 0, 0, 0, acmd_list },
2198 { "notify", "MESSAGE ...", 1, 0xffff, acmd_notify },
2199 { "peerinfo", "PEER", 1, 1, acmd_peerinfo },
2200 { "ping", "[OPTIONS] PEER", 1, 0xffff, acmd_ping },
2201 { "port", "[FAMILY]", 0, 1, acmd_port },
2202 { "quit", 0, 0, 0, acmd_quit },
2203 { "reload", 0, 0, 0, acmd_reload },
2204 { "servinfo", 0, 0, 0, acmd_servinfo },
2205 { "setifname", "PEER NEW-NAME", 2, 2, acmd_setifname },
2206 { "stats", "PEER", 1, 1, acmd_stats },
2207 { "svcclaim", "SERVICE VERSION", 2, 2, acmd_svcclaim },
2208 { "svcensure", "SERVICE [VERSION]", 1, 2, acmd_svcensure },
2209 { "svcfail", "JOBID TOKENS...", 1, 0xffff, acmd_svcfail },
2210 { "svcinfo", "JOBID TOKENS...", 1, 0xffff, acmd_svcinfo },
2211 { "svclist", 0, 0, 0, acmd_svclist },
2212 { "svcok", "JOBID", 1, 1, acmd_svcok },
2213 { "svcquery", "SERVICE", 1, 1, acmd_svcquery },
2214 { "svcrelease", "SERVICE", 1, 1, acmd_svcrelease },
2215 { "svcsubmit", "[OPTIONS] SERVICE TOKENS...",
2216 2, 0xffff, acmd_svcsubmit },
2218 { "trace", "[OPTIONS]", 0, 1, acmd_trace },
2220 { "tunnels", 0, 0, 0, acmd_tunnels },
2221 { "version", 0, 0, 0, acmd_version },
2222 { "warn", "MESSAGE ...", 1, 0xffff, acmd_warn },
2223 { "watch", "[OPTIONS]", 0, 1, acmd_watch },
2227 static void acmd_help(admin *a, unsigned ac, char *av[])
2231 for (c = acmdtab; c->name; c++) {
2233 a_info(a, "%s", c->name, "*%s", c->help, A_END);
2235 a_info(a, "%s", c->name, A_END);
2240 /*----- Connection handling -----------------------------------------------*/
2242 /* --- @a_destroypending@ --- *
2248 * Use: Destroys pending admin connections at a safe time.
2251 static void a_destroypending(void)
2253 admin *a, *aa, *head;
2254 admin_bgop *bg, *bbg;
2255 admin_service *svc, *ssvc;
2257 /* --- Destroy connections marked as pending --- *
2259 * Slightly messy. Killing clients may cause others to finally die. Make
2260 * sure that they can be put on the list without clobbering anything or
2267 for (a = head; a; a = aa) {
2269 assert(a->f & AF_DEAD);
2271 /* --- Report what we're doing --- */
2273 T( trace(T_ADMIN, "admin: completing destruction of connection %u",
2276 /* --- If this is the foreground client then shut down --- */
2278 if (a->f & AF_FOREGROUND) {
2279 T( trace(T_ADMIN, "admin: foreground client quit: shutting down"); )
2280 a_warn("SERVER", "quit", "foreground-eof", A_END);
2284 /* --- Abort any background jobs in progress --- */
2286 for (bg = a->bg; bg; bg = bbg) {
2289 if (bg->tag) xfree(bg->tag);
2293 /* --- Release services I hold, and abort pending jobs --- */
2295 for (svc = a->svcs; svc; svc = ssvc) {
2299 a_jobtablefinal(&a->j);
2301 /* --- Close file descriptors and selectory --- */
2303 selbuf_destroy(&a->b);
2304 if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd);
2306 if (a_stdin == a) a_stdin = 0;
2315 /* --- @a_destroy@ --- *
2317 * Arguments: @admin *a@ = pointer to an admin block
2321 * Use: Destroys an admin block. This requires a certain amount of
2325 static void freequeue(oqueue *q)
2329 for (o = q->hd; o; o = oo) {
2336 static void a_destroy(admin *a)
2341 if (a->next) a->next->prev = a->prev;
2342 if (a->prev) a->prev->next = a->next;
2343 else admins = a->next;
2345 if (a->out.hd) sel_rmfile(&a->w);
2352 T( trace(T_ADMIN, "admin: killing connection %u", a->seq); )
2355 /* --- @a_line@ --- *
2357 * Arguments: @char *p@ = pointer to the line read
2358 * @size_t len@ = length of the line
2359 * @void *vp@ = pointer to my admin block
2363 * Use: Handles a line of input.
2366 static void a_line(char *p, size_t len, void *vp)
2381 selbuf_disable(&a->b);
2385 ac = str_qsplit(p, av, N(av) - 1, 0, STRF_QUOTE);
2389 for (c = acmdtab; c->name; c++) {
2390 if (mystrieq(av[0], c->name)) {
2392 if (c->argmin > ac || ac > c->argmax) {
2394 a_fail(a, "bad-syntax", "%s", c->name, "", A_END);
2396 a_fail(a, "bad-syntax", "%s", c->name, "%s", c->help, A_END);
2398 c->func(a, ac, av + 1);
2402 a_fail(a, "unknown-command", "%s", av[0], A_END);
2405 /* --- @a_create@ --- *
2407 * Arguments: @int fd_in, fd_out@ = file descriptors to use
2408 * @unsigned f@ = initial flags to set
2412 * Use: Creates a new admin connection. It's safe to call this
2413 * before @a_init@ -- and, indeed, this makes sense if you also
2414 * call @a_switcherr@ to report initialization errors through
2415 * the administration machinery.
2418 void a_create(int fd_in, int fd_out, unsigned f)
2420 admin *a = CREATE(admin);
2422 T( static unsigned seq = 0;
2424 T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); )
2428 a_jobtableinit(&a->j);
2430 if (fd_in == STDIN_FILENO) a_stdin = a;
2431 fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
2432 if (fd_out != fd_in)
2433 fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
2434 selbuf_init(&a->b, &sel, fd_in, a_line, a);
2435 sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a);
2436 a->out.hd = a->out.tl = 0;
2439 if (admins) admins->prev = a;
2443 /* --- @a_accept@ --- *
2445 * Arguments: @int fd@ = file descriptor to accept
2446 * @unsigned mode@ = what to do
2447 * @void *v@ = uninteresting pointer
2451 * Use: Accepts a new admin connection.
2454 static void a_accept(int fd, unsigned mode, void *v)
2457 struct sockaddr_un sun;
2458 socklen_t sz = sizeof(sun);
2460 if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) {
2461 if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK &&
2462 errno != ECONNABORTED && errno != EPROTO)
2463 a_warn("ADMIN", "accept-error", "?ERRNO", A_END);
2466 a_create(nfd, nfd, 0);
2469 /* --- @a_preselect@ --- *
2475 * Use: Informs the admin module that we're about to select again,
2476 * and that it should do cleanup things it has delayed until a
2480 void a_preselect(void) { if (a_dead) a_destroypending(); }
2482 /* --- @a_daemon@ --- *
2488 * Use: Informs the admin module that it's a daemon.
2491 void a_daemon(void) { flags |= F_DAEMON; }
2493 /* --- @a_listen@ --- *
2495 * Arguments: @const char *name@ = socket name to create
2496 * @uid_t u@ = user to own the socket
2497 * @gid_t g@ = group to own the socket
2498 * @mode_t m@ = permissions to set on the socket
2502 * Use: Creates the admin listening socket.
2505 void a_listen(const char *name, uid_t u, gid_t g, mode_t m)
2509 struct sockaddr_un sun;
2513 /* --- Set up the socket address --- */
2515 sz = strlen(name) + 1;
2516 if (sz > sizeof(sun.sun_path)) {
2517 a_warn("ADMIN", "admin-socket", "%s", name, "name-too-long", A_END);
2521 sun.sun_family = AF_UNIX;
2522 memcpy(sun.sun_path, name, sz);
2523 sz += offsetof(struct sockaddr_un, sun_path);
2525 /* --- Attempt to bind to the socket --- */
2527 omask = umask(0077);
2529 if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) {
2530 a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
2531 "create-failed", "?ERRNO", A_END);
2534 if (bind(fd, (struct sockaddr *)&sun, sz) < 0) {
2537 if (errno != EADDRINUSE) {
2538 a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
2539 "bind-failed", "?ERRNO", A_END);
2543 a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
2544 "too-many-retries", A_END);
2548 if (!connect(fd, (struct sockaddr *)&sun, sz)) {
2549 a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
2550 "already-in-use", A_END);
2553 if (errno != ECONNREFUSED) {
2554 a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
2555 "bind-failed", "?ERR", e, A_END);
2558 if (stat(sun.sun_path, &st)) {
2559 if (errno == ENOENT) { close(fd); goto again; }
2560 a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
2561 "stat-failed", "?ERRNO", A_END);
2564 if (!S_ISSOCK(st.st_mode)) {
2565 a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
2566 "not-a-socket", A_END);
2569 T( trace(T_ADMIN, "admin: stale socket found; removing it"); )
2570 unlink(sun.sun_path);
2574 if (chown(sun.sun_path, u, g)) {
2575 a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
2576 "chown-failed", "?ERRNO", A_END);
2579 if (chmod(sun.sun_path, m)) {
2580 a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
2581 "chmod-failed", "?ERRNO", A_END);
2585 fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
2586 if (listen(fd, 5)) {
2587 a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
2588 "listen-failed", "?ERRNO", A_END);
2592 /* --- Listen to the socket --- */
2594 sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0);
2599 /* --- @a_unlisten@ --- *
2605 * Use: Stops listening to the administration socket and removes it.
2608 void a_unlisten(void)
2610 if (!sockname) return;
2616 /* --- @a_switcherr@ --- *
2622 * Use: Arrange to report warnings, trace messages, etc. to
2623 * administration clients rather than the standard-error stream.
2625 * Obviously this makes no sense unless there is at least one
2626 * client established. Calling @a_listen@ won't help with this,
2627 * because the earliest a new client can connect is during the
2628 * first select-loop iteration, which is too late: some initial
2629 * client must have been added manually using @a_create@.
2632 void a_switcherr(void)
2634 T( trace_custom(a_trace, 0);
2635 trace(T_ADMIN, "admin: enabled custom tracing"); )
2639 /* --- @a_signals@ --- *
2645 * Use: Establishes handlers for the obvious signals.
2648 void a_signals(void)
2650 struct sigaction sa;
2652 sig_add(&s_term, SIGTERM, a_sigdie, 0);
2653 sig_add(&s_hup, SIGHUP, a_sighup, 0);
2654 sigaction(SIGINT, 0, &sa);
2655 if (sa.sa_handler != SIG_IGN)
2656 sig_add(&s_int, SIGINT, a_sigdie, 0);
2659 /* --- @a_init@ --- *
2665 * Use: Creates the admin listening socket.
2674 /* --- Create services table --- */
2676 sym_create(&a_svcs);
2678 /* --- Prepare the background name resolver --- */
2681 if ((err = adns_init(&ads,
2682 (adns_if_permit_ipv4 | adns_if_permit_ipv6 |
2683 adns_if_noserverwarn | adns_if_nosigpipe |
2686 a_warn("ADMIN", "adns-init-failed", "?ERRNO", A_END);
2689 sel_addhook(&sel, &hook, before_select, after_select, 0);
2695 /*----- That's all, folks -------------------------------------------------*/