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 --------------------------------------------------*/
67 static const char *sockname;
68 static sym_table a_svcs;
69 static unsigned flags = 0;
70 static admin *a_stdin = 0;
71 static sig s_term, s_int, s_hup;
76 #define T_RESOLVE SEC(30)
79 static void a_destroy(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-write-error", "?ERRNO", A_END);
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_vformat@ --- *
236 * Arguments: @dstr *d@ = where to leave the formatted message
237 * @const char *fmt@ = pointer to format string
238 * @va_list ap@ = arguments in list
242 * Use: Main message token formatting driver.
245 static void a_vformat(dstr *d, const char *fmt, va_list ap)
252 dstr_vputf(d, fmt + 1, &ap);
253 } else if (*fmt == '?') {
254 if (strcmp(fmt, "?ADDR") == 0) {
255 const addr *a = va_arg(ap, const addr *);
256 switch (a->sa.sa_family) {
258 u_quotify(d, "INET");
259 u_quotify(d, inet_ntoa(a->sin.sin_addr));
260 dstr_putf(d, " %u", (unsigned)ntohs(a->sin.sin_port));
265 } else if (strcmp(fmt, "?B64") == 0) {
266 const octet *p = va_arg(ap, const octet *);
267 size_t n = va_arg(ap, size_t);
273 base64_encode(&b64, p, n, d);
274 base64_encode(&b64, 0, 0, d);
275 while (d->len && d->buf[d->len - 1] == '=') d->len--;
276 } else if (strcmp(fmt, "?TOKENS") == 0) {
277 const char *const *av = va_arg(ap, const char *const *);
278 while (*av) u_quotify(d, *av++);
279 } else if (strcmp(fmt, "?PEER") == 0)
280 u_quotify(d, p_name(va_arg(ap, peer *)));
281 else if (strcmp(fmt, "?ERRNO") == 0) {
282 dstr_putf(d, " E%d", errno);
283 u_quotify(d, strerror(errno));
287 if (*fmt == '!') fmt++;
289 dstr_vputf(&dd, fmt, &ap);
290 u_quotify(d, dd.buf);
292 fmt = va_arg(ap, const char *);
298 /* --- @a_write@, @a_vwrite@ --- *
300 * Arguments: @admin *a@ = admin connection to write to
301 * @const char *status@ = status code to report
302 * @const char *tag@ = tag string, or null
303 * @const char *fmt@ = pointer to format string
304 * @va_list ap@ = arguments in list
305 * @...@ = other arguments
309 * Use: Sends a message to an admin connection.
312 static void a_vwrite(admin *a, const char *status, const char *tag,
313 const char *fmt, va_list ap)
317 if (tag) dstr_puts(&d, "BG");
318 dstr_puts(&d, status);
319 if (tag) u_quotify(&d, tag);
320 a_vformat(&d, fmt, ap);
322 dosend(a, d.buf, d.len);
326 static void a_write(admin *a, const char *status, const char *tag,
327 const char *fmt, ...)
332 a_vwrite(a, status, tag, fmt, ap);
336 /* --- @a_ok@, @a_info@, @a_fail@ --- *
338 * Arguments: @admin *a@ = connection
339 * @const char *fmt@ = format string
340 * @...@ = other arguments
344 * Use: Convenience functions for @a_write@.
347 static void a_ok(admin *a) { a_write(a, "OK", 0, A_END); }
349 static void a_info(admin *a, const char *fmt, ...)
354 a_vwrite(a, "INFO", 0, fmt, ap);
358 static void a_fail(admin *a, const char *fmt, ...)
363 a_vwrite(a, "FAIL", 0, fmt, ap);
367 /* --- @a_alert@, @a_valert@, @a_rawalert@ --- *
369 * Arguments: @unsigned f_and, f_eq@ = filter for connections
370 * @const char *status@ = status string
371 * @const char *fmt@ = pointer to format string
372 * @const char *p@ = pointer to raw string
373 * @size_t sz@ = size of raw string
374 * @va_list ap@ = arguments in list
375 * @...@ = other arguments
379 * Use: Write a message to all admin connections matched by the given
383 static void a_rawalert(unsigned f_and, unsigned f_eq, const char *status,
384 const char *p, size_t sz)
389 if (!(flags & F_INIT))
391 dstr_puts(&d, status);
394 dstr_putm(&d, p, sz);
399 for (a = admins; a; a = aa) {
401 if ((a->f & f_and) == f_eq)
402 dosend(a, d.buf, d.len);
407 static void a_valert(unsigned f_and, unsigned f_eq, const char *status,
408 const char *fmt, va_list ap)
412 if (!(flags & F_INIT))
414 a_vformat(&d, fmt, ap);
415 a_rawalert(f_and, f_eq, status, fmt ? d.buf : 0, fmt ? d.len : 0);
419 static void a_alert(unsigned f_and, unsigned f_eq, const char *status,
420 const char *fmt, ...)
425 a_valert(f_and, f_eq, status, fmt, ap);
429 /* --- @a_warn@ --- *
431 * Arguments: @const char *fmt@ = pointer to format string
432 * @...@ = other arguments
436 * Use: Informs all admin connections of a warning.
439 void a_warn(const char *fmt, ...)
445 a_valert(0, 0, "WARN", fmt, ap);
448 fprintf(stderr, "%s: ", QUIS);
449 a_vformat(&d, fmt, ap);
451 dstr_write(&d, stderr);
457 /* --- @a_trace@ --- *
459 * Arguments: @const char *p@ = pointer to a buffer
460 * @size_t sz@ = size of the buffer
461 * @void *v@ = uninteresting pointer
465 * Use: Custom trace output handler. Sends trace messages to
466 * interested admin connections.
470 static void a_trace(const char *p, size_t sz, void *v)
471 { a_rawalert(AF_TRACE, AF_TRACE, "TRACE", p, sz); }
474 /* --- @a_notify@ --- *
476 * Arguments: @const char *fmt@ = pointer to format string
477 * @...@ = other arguments
481 * Use: Sends a notification to interested admin connections.
484 void a_notify(const char *fmt, ...)
489 a_valert(AF_NOTE, AF_NOTE, "NOTE", fmt, ap);
493 /* --- @a_quit@ --- *
499 * Use: Shuts things down nicely.
508 while ((p = p_first()) != 0)
513 /* --- @a_sigdie@ --- *
515 * Arguments: @int sig@ = signal number
516 * @void *v@ = an uninteresting argument
520 * Use Shuts down on receipt of a fatal signal.
523 static void a_sigdie(int sig, void *v)
529 case SIGTERM: p = "SIGTERM"; break;
530 case SIGINT: p = "SIGINT"; break;
532 sprintf(buf, "%i", sig);
536 a_warn("SERVER", "quit", "signal", "%s", p, A_END);
540 /* --- @a_sighup@ --- *
542 * Arguments: @int sig@ = signal number
543 * @void *v@ = an uninteresting argument
547 * Use Logs a message about SIGHUP not being useful.
550 static void a_sighup(int sig, void *v)
551 { a_warn("SERVER", "ignore", "signal", "SIGHUP", A_END); }
553 /* --- @a_parsetime@ --- *
555 * Arguments; @const char *p@ = time string to parse
557 * Returns: Time in seconds, or @< 0@ on error.
560 static long a_parsetime(const char *p)
563 long t = strtol(p, &q, 0);
569 case 's': if (q[1] != 0)
576 /* --- @a_findpeer@ --- *
578 * Arguments: @admin *a@ = admin connection
579 * @const char *pn@ = peer name
581 * Returns: The peer, or null if not there.
583 * Use: Finds a peer, reporting an error if it failed.
586 static peer *a_findpeer(admin *a, const char *pn)
590 if ((p = p_find(pn)) == 0)
591 a_fail(a, "unknown-peer", "%s", pn, A_END);
595 /*----- Backgrounded operations -------------------------------------------*/
598 (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>")
600 /* --- @a_bgfind@ --- *
602 * Arguments: @admin *a@ = a client block
603 * @const char *tag@ = the requested tag
605 * Returns: The requested background job, or null.
608 static admin_bgop *a_bgfind(admin *a, const char *tag)
612 for (bg = a->bg; bg; bg = bg->next) {
613 if (bg->tag && strcmp(tag, bg->tag) == 0)
619 /* --- @a_bgrelease@ --- *
621 * Arguments: @admin_bgop *bg@ = backgrounded operation
625 * Use: Removes a backgrounded operation from the queue, since
626 * (presumably) it's done.
629 static void a_bgrelease(admin_bgop *bg)
633 T( trace(T_ADMIN, "admin: release bgop %s", BGTAG(bg)); )
634 if (bg->tag) xfree(bg->tag);
635 else selbuf_enable(&a->b);
636 if (bg->next) bg->next->prev = bg->prev;
637 if (bg->prev) bg->prev->next = bg->next;
638 else a->bg = bg->next;
640 if (!a->bg && (a->f & AF_CLOSE)) a_destroy(a);
643 /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- *
645 * Arguments: @admin_bgop *bg@ = backgrounded operation
646 * @const char *fmt@ = format string
647 * @...@ = other arguments
651 * Use: Convenience functions for @a_write@.
654 static void a_bgok(admin_bgop *bg)
655 { a_write(bg->a, "OK", bg->tag, A_END); }
657 static void a_bginfo(admin_bgop *bg, const char *fmt, ...)
661 a_vwrite(bg->a, "INFO", bg->tag, fmt, ap);
665 static void a_bgfail(admin_bgop *bg, const char *fmt, ...)
669 a_vwrite(bg->a, "FAIL", bg->tag, fmt, ap);
673 /* --- @a_bgadd@ --- *
675 * Arguments: @admin *a@ = administration connection
676 * @admin_bgop *bg@ = pointer to background operation
677 * @const char *tag@ = background tag, or null for foreground
678 * @void (*cancel)(admin_bgop *)@ = cancel function
680 * Returns: Zero for success, nonzero on failure.
682 * Use: Links a background job into the list.
685 static int a_bgadd(admin *a, admin_bgop *bg, const char *tag,
686 void (*cancel)(admin_bgop *))
689 if (a_bgfind(a, tag)) {
690 a_fail(a, "tag-exists", "%s", tag, A_END);
693 bg->tag = xstrdup(tag);
697 selbuf_disable(&a->b);
703 if (a->bg) a->bg->prev = bg;
705 T( trace(T_ADMIN, "admin: add bgop %s", BGTAG(bg)); )
706 if (tag) a_write(a, "DETACH", tag, A_END);
710 /*----- Job table manipulation --------------------------------------------*/
713 #define JOB_INDEXMASK ((1ul << JOB_SHIFT) - 1)
714 #define JOB_SEQMASK ((1ul << (32 - JOB_SHIFT)) - 1)
716 #define JOB_END 0xfffffffful
718 static unsigned long a_joboffset;
720 /* --- @a_jobidencode@ --- *
722 * Arguments: @admin_svcop *svc@ = pointer to a service operation
724 * Returns: A jobid for this job, in an internal static buffer.
726 * Use: Constructs a jobid. In order to dissuade people from
727 * predicting jobids, we obfuscate them.
729 * A `raw' jobid consists of two 16-bit fields. The low 16 bits
730 * are an index into a big array. The high 16 bits are a
731 * sequence number recording how many times that slot has been
734 * This `raw' jobid is then obfuscated by adding a randomly-
735 * generated offset, and multiplying (mod %$2^{32}$%) by a fixed
739 static const char *a_jobidencode(admin_svcop *svc)
741 admin_jobtable *j = &svc->prov->j;
746 assert(svc->index <= JOB_INDEXMASK);
747 seq = j->v[svc->index].seq;
748 assert(seq <= JOB_SEQMASK);
749 pre = (unsigned long)svc->index | ((unsigned long)seq << JOB_SHIFT);
750 sprintf(buf, "J%08lx", ((pre + a_joboffset) * 0x0f87a7a3ul) & 0xffffffff);
754 /* --- @a_jobiddecode@ --- *
756 * Arguments: @admin_jobtable *j@ = pointer to a job table
757 * @const char *jid@ = pointer to a jobid string
759 * Returns: A pointer to the job's @svcop@ structure.
762 static admin_svcop *a_jobiddecode(admin_jobtable *j, const char *jid)
769 for (i = 1; i < 9; i++) {
770 if (!isxdigit((unsigned char)jid[i]))
775 pre = strtoul(jid + 1, 0, 16);
776 pre = ((pre * 0xbd11c40bul) - a_joboffset) & 0xffffffff;
777 i = pre & JOB_INDEXMASK;
778 if (i >= j->n || j->v[i].seq != (pre >> JOB_SHIFT))
780 return (j->v[i].u.op);
783 /* --- @a_jobcreate@ --- *
785 * Arguments: @admin *a@ = pointer to administration client
787 * Returns: A pointer to a freshly-allocated @svcop@, or null.
789 * Use: Allocates a fresh @svcop@ and links it into a job table.
792 static admin_svcop *a_jobcreate(admin *a)
797 admin_jobtable *j = &a->j;
799 if (j->free != JOB_END) {
801 j->free = j->v[i].u.next;
804 if (j->sz > JOB_INDEXMASK)
809 j->v = xmalloc(j->sz * sizeof(*j->v));
812 j->v = xrealloc(j->v, j->sz * sizeof(*j->v), sz * sizeof(*j->v));
818 svc = xmalloc(sizeof(*svc));
821 svc->next = j->active;
823 if (j->active) j->active->prev = svc;
826 IF_TRACING(T_ADMIN, {
827 trace(T_ADMIN, "admin: created job %s (%u)", a_jobidencode(svc), i);
832 /* --- @a_jobdestroy@ --- *
834 * Arguments: @admin_svcop *svc@ = pointer to job block
838 * Use: Frees up a completed (or cancelled) job.
841 static void a_jobdestroy(admin_svcop *svc)
843 admin *a = svc->prov;
844 admin_jobtable *j = &a->j;
845 unsigned i = svc->index;
847 IF_TRACING(T_ADMIN, {
848 trace(T_ADMIN, "admin: destroying job %s (%u)", a_jobidencode(svc), i);
850 assert(j->v[i].u.op = svc);
851 j->v[i].u.next = j->free;
854 if (svc->next) svc->next->prev = svc->prev;
855 if (svc->prev) svc->prev->next = svc->next;
856 else j->active = svc->next;
859 /* --- @a_jobtableinit@ --- *
861 * Arguments: @admin_jobtable *j@ = pointer to job table
865 * Use: Initializes a job table.
868 static void a_jobtableinit(admin_jobtable *j)
871 a_joboffset = GR_RANGE(&rand_global, 0xffffffff) + 1;
878 /* --- @a_jobtablefinal@ --- *
880 * Arguments: @admin_jobtable *j@ = pointer to job table
884 * Use: Closes down a job table.
887 static void a_jobtablefinal(admin_jobtable *j)
889 admin_svcop *svc, *ssvc;
891 for (svc = j->active; svc; svc = ssvc) {
893 a_bgfail(&svc->bg, "provider-failed", A_END);
894 a_bgrelease(&svc->bg);
896 if (j->v) xfree(j->v);
899 /*----- Services infrastructure -------------------------------------------*/
901 /* --- @a_svcfind@ --- *
903 * Arguments: @admin *a@ = the requesting client
904 * @const char *name@ = service name wanted
906 * Returns: The service requested, or null.
908 * Use: Finds a service; reports an error if the service couldn't be
912 static admin_service *a_svcfind(admin *a, const char *name)
916 if ((svc = sym_find(&a_svcs, name, -1, 0, 0)) == 0) {
917 a_fail(a, "unknown-service", "%s", name, A_END);
923 /* --- @a_svcunlink@ --- *
925 * Arguments: @admin_service *svc@ = pointer to service structure
929 * Use: Unlinks the service from its provider, without issuing a
930 * message or freeing the structure. The version string is
934 static void a_svcunlink(admin_service *svc)
937 svc->next->prev = svc->prev;
939 svc->prev->next = svc->next;
941 svc->prov->svcs = svc->next;
945 /* --- @a_svcrelease@ --- *
947 * Arguments: @admin_service *svc@ = pointer to service structure
951 * Use: Releases a service and frees its structure.
954 static void a_svcrelease(admin_service *svc)
956 a_notify("SVCRELEASE", "%s", SYM_NAME(svc), A_END);
958 sym_remove(&a_svcs, svc);
961 /*----- Name resolution operations ----------------------------------------*/
963 /* --- @a_resolved@ --- *
965 * Arguments: @struct hostent *h@ = pointer to resolved hostname
966 * @void *v@ = pointer to resolver operation
970 * Use: Handles a completed name resolution.
973 static void a_resolved(struct hostent *h, void *v)
977 T( trace(T_ADMIN, "admin: resop %s resolved", BGTAG(r)); )
980 a_bgfail(&r->bg, "resolve-error", "%s", r->addr, A_END);
981 r->func(r, ARES_FAIL);
983 memcpy(&r->sa.sin.sin_addr, h->h_addr, sizeof(struct in_addr));
991 /* --- @a_restimer@ --- *
993 * Arguments: @struct timeval *tv@ = timer
994 * @void *v@ = pointer to resolver operation
998 * Use: Times out a resolver.
1001 static void a_restimer(struct timeval *tv, void *v)
1005 T( trace(T_ADMIN, "admin: resop %s timeout", BGTAG(r)); )
1006 a_bgfail(&r->bg, "resolver-timeout", "%s", r->addr, A_END);
1007 r->func(r, ARES_FAIL);
1010 a_bgrelease(&r->bg);
1013 /* --- @a_rescancel@ --- *
1015 * Arguments: @admin_bgop *bg@ = background operation
1019 * Use: Cancels an add operation.
1022 static void a_rescancel(admin_bgop *bg)
1024 admin_resop *r = (admin_resop *)bg;
1026 T( trace(T_ADMIN, "admin: cancel resop %s", BGTAG(r)); )
1027 r->func(r, ARES_FAIL);
1033 /* --- @a_resolve@ --- *
1035 * Arguments: @admin *a@ = administration connection
1036 * @admin_resop *r@ = resolver operation to run
1037 * @const char *tag@ = background operation tag
1038 * @void (*func)(struct admin_resop *, int@ = handler function
1039 * @unsigned ac@ = number of remaining arguments
1040 * @char *av[]@ = pointer to remaining arguments
1044 * Use: Cranks up a resolver job.
1047 static void a_resolve(admin *a, admin_resop *r, const char *tag,
1048 void (*func)(struct admin_resop *, int),
1049 unsigned ac, char *av[])
1056 /* --- Fill in the easy bits of address --- */
1058 r->bg.tag = "<starting>";
1061 if (mystrieq(av[i], "inet")) i++;
1063 a_fail(a, "bad-addr-syntax", "[inet] ADDRESS PORT", A_END);
1066 r->sa.sin.sin_family = AF_INET;
1067 r->sasz = sizeof(r->sa.sin);
1068 r->addr = xstrdup(av[i]);
1069 pt = strtoul(av[i + 1], &p, 0);
1071 struct servent *s = getservbyname(av[i + 1], "udp");
1073 a_fail(a, "unknown-service", "%s", av[i + 1], A_END);
1076 pt = ntohs(s->s_port);
1078 if (pt == 0 || pt >= 65536) {
1079 a_fail(a, "invalid-port", "%lu", pt, A_END);
1082 r->sa.sin.sin_port = htons(pt);
1084 /* --- Report backgrounding --- *
1086 * Do this for consistency of interface, even if we're going to get the
1087 * answer straight away.
1090 if (a_bgadd(a, &r->bg, tag, a_rescancel))
1092 T( trace(T_ADMIN, "admin: %u, resop %s, hostname `%s'",
1093 a->seq, BGTAG(r), r->addr); )
1095 /* --- If the name is numeric, do it the easy way --- */
1097 if (inet_aton(av[i], &r->sa.sin.sin_addr)) {
1098 T( trace(T_ADMIN, "admin: resop %s done the easy way", BGTAG(r)); )
1101 a_bgrelease(&r->bg);
1105 /* --- Store everything for later and crank up the resolver --- */
1107 gettimeofday(&tv, 0);
1108 tv.tv_sec += T_RESOLVE;
1109 sel_addtimer(&sel, &r->t, &tv, a_restimer, r);
1110 bres_byname(&r->r, r->addr, a_resolved, r);
1115 if (r->addr) xfree(r->addr);
1119 /*----- Option parsing ----------------------------------------------------*/
1121 #define OPTIONS(argc, argv, guts) do { \
1122 char **o_av = argv; \
1126 if (mystrieq(*o_av, "--")) { \
1131 if (**o_av == '-') \
1135 argc -= o_av - argv; \
1139 #define OPT(name, guts) if (mystrieq(*o_av, name)) { guts continue; }
1141 #define OPTARG(name, arg, guts) OPT(name, { \
1144 if (!arg) goto bad_syntax; \
1148 #define OPTTIME(name, arg, guts) OPTARG(name, o_arg, { \
1150 if ((arg = a_parsetime(o_arg)) < 0) { \
1151 a_fail(a, "bad-time-spec", "%s", o_arg, A_END); \
1157 /*----- Adding peers ------------------------------------------------------*/
1159 /* --- @a_doadd@ --- *
1161 * Arguments: @admin_resop *r@ = resolver operation
1162 * @int rc@ = how it worked
1166 * Use: Handles a completed resolution.
1169 static void a_doadd(admin_resop *r, int rc)
1171 admin_addop *add = (admin_addop *)r;
1173 T( trace(T_ADMIN, "admin: done add op %s", BGTAG(add)); )
1175 if (rc == ARES_OK) {
1176 add->peer.sasz = add->r.sasz;
1177 add->peer.sa = add->r.sa;
1178 if (p_find(add->peer.name))
1179 a_bgfail(&add->r.bg, "peer-exists", "%s", add->peer.name, A_END);
1180 else if (!p_create(&add->peer))
1181 a_bgfail(&add->r.bg, "peer-create-fail", "%s", add->peer.name, A_END);
1186 xfree(add->peer.name);
1189 /* --- @acmd_add@ --- *
1191 * Arguments: @admin *a@ = connection which requested the addition
1192 * @unsigned ac@ = argument count
1193 * @char *av[]@ = pointer to the argument list
1197 * Use: Adds a new peer.
1200 static void acmd_add(admin *a, unsigned ac, char *av[])
1202 const char *tag = 0;
1205 /* --- Set stuff up --- */
1207 add = xmalloc(sizeof(*add));
1210 add->peer.tops = tun_default;
1212 /* --- Parse options --- */
1215 OPTARG("-background", arg, { tag = arg; })
1216 OPTARG("-tunnel", arg, {
1220 a_fail(a, "unknown-tunnel", "%s", arg, A_END);
1223 if (mystrieq(arg, tunnels[i]->name)) {
1224 add->peer.tops = tunnels[i];
1229 OPTTIME("-keepalive", t, { add->peer.t_ka = t; })
1232 /* --- Make sure someone's not got there already --- */
1237 a_fail(a, "peer-exists", "%s", *av, A_END);
1240 add->peer.name = xstrdup(*av++);
1243 /* --- Crank up the resolver --- */
1245 a_resolve(a, &add->r, tag, a_doadd, ac, av);
1248 /* --- Clearing up --- */
1251 a_fail(a, "bad-syntax", "add", "[OPTIONS] PEER ADDR ...", A_END);
1253 if (add->peer.name) xfree(add->peer.name);
1258 /*----- Ping --------------------------------------------------------------*/
1260 /* --- @a_pingcancel@ --- *
1262 * Arguments: @admin_bgop *bg@ = background operation block
1266 * Use: Cancels a running ping.
1269 static void a_pingcancel(admin_bgop *bg)
1271 admin_pingop *pg = (admin_pingop *)bg;
1272 T( trace(T_ADMIN, "admin: cancel ping op %s", BGTAG(pg)); )
1273 p_pingdone(&pg->ping, PING_NONOTIFY);
1276 /* --- @a_pong@ --- *
1278 * Arguments: @int rc@ = return code
1279 * @void *v@ = ping operation block
1283 * Use: Collects what happened to a ping message.
1286 static void a_pong(int rc, void *v)
1288 admin_pingop *pg = v;
1294 gettimeofday(&tv, 0);
1295 tv_sub(&tv, &tv, &pg->pingtime);
1296 millis = (double)tv.tv_sec * 1000 + (double)tv.tv_usec/1000;
1297 a_bginfo(&pg->bg, "ping-ok", "%.1f", millis, A_END);
1301 a_bginfo(&pg->bg, "ping-timeout", A_END);
1305 a_bginfo(&pg->bg, "ping-peer-died", A_END);
1311 T( trace(T_ADMIN, "admin: ponged ping op %s", BGTAG(pg)); )
1312 a_bgrelease(&pg->bg);
1315 /* --- @acmd_ping@, @acmd_eping@ --- *
1317 * Arguments: @admin *a@ = connection which requested the ping
1318 * @unsigned ac@ = argument count
1319 * @char *av[]@ = pointer to the argument list
1323 * Use: Pings a peer.
1326 static void a_ping(admin *a, unsigned ac, char *av[],
1327 const char *cmd, unsigned msg)
1331 admin_pingop *pg = 0;
1332 const char *tag = 0;
1335 OPTARG("-background", arg, { tag = arg; })
1336 OPTTIME("-timeout", arg, { t = arg; })
1338 if (!*av || av[1]) goto bad_syntax;
1339 if ((p = a_findpeer(a, *av)) == 0)
1341 pg = xmalloc(sizeof(*pg));
1342 gettimeofday(&pg->pingtime, 0);
1343 if (a_bgadd(a, &pg->bg, tag, a_pingcancel))
1345 T( trace(T_ADMIN, "admin: ping op %s: %s to %s",
1346 BGTAG(pg), cmd, p_name(p)); )
1347 if (p_pingsend(p, &pg->ping, msg, t, a_pong, pg)) {
1348 a_bgfail(&pg->bg, "ping-send-failed", A_END);
1349 a_bgrelease(&pg->bg);
1354 a_fail(a, "bad-syntax", "%s", cmd, "[OPTIONS] PEER", cmd, A_END);
1360 static void acmd_ping(admin *a, unsigned ac, char *av[])
1361 { a_ping(a, ac, av, "ping", MISC_PING); }
1362 static void acmd_eping(admin *a, unsigned ac, char *av[])
1363 { a_ping(a, ac, av, "eping", MISC_EPING); }
1365 /*----- Service commands --------------------------------------------------*/
1367 static void acmd_svcclaim(admin *a, unsigned ac, char *av[])
1372 svc = sym_find(&a_svcs, av[0], -1, sizeof(*svc), &f);
1374 if (versioncmp(av[1], svc->version) <= 0) {
1377 "%s", SYM_NAME(svc),
1382 a_write(svc->prov, "SVCCLAIM", 0, "%s", av[0], "%s", av[1], A_END);
1386 svc->version = xstrdup(av[1]);
1387 svc->next = a->svcs;
1389 if (a->svcs) a->svcs->prev = svc;
1391 a_notify("SVCCLAIM", "%s", SYM_NAME(svc), "%s", svc->version, A_END);
1395 static void acmd_svcrelease(admin *a, unsigned ac, char *av[])
1399 if ((svc = a_svcfind(a, av[0])) == 0)
1401 if (svc->prov != a) {
1402 a_fail(a, "not-service-provider", "%s", SYM_NAME(svc), A_END);
1409 static void acmd_svcensure(admin *a, unsigned ac, char *av[])
1413 if ((svc = a_svcfind(a, av[0])) == 0)
1415 if (av[1] && versioncmp(svc->version, av[1]) < 0) {
1416 a_fail(a, "service-too-old",
1417 "%s", SYM_NAME(svc),
1425 static void acmd_svcquery(admin *a, unsigned ac, char *av[])
1429 if ((svc = a_svcfind(a, av[0])) != 0) {
1430 a_info(a, "name=%s", SYM_NAME(svc), "version=%s", svc->version, A_END);
1435 static void acmd_svclist(admin *a, unsigned ac, char *av[])
1440 for (sym_mkiter(&i, &a_svcs); (svc = sym_next(&i)) != 0; )
1441 a_info(a, "%s", SYM_NAME(svc), "%s", svc->version, A_END);
1445 static void a_canceljob(admin_bgop *bg)
1447 admin_svcop *svc = (admin_svcop *)bg;
1449 a_write(svc->prov, "SVCCANCEL", 0, "%s", a_jobidencode(svc), A_END);
1453 static void acmd_svcsubmit(admin *a, unsigned ac, char *av[])
1455 const char *tag = 0;
1458 const char *ver = 0;
1462 OPTARG("-background", arg, { tag = arg; })
1463 OPTARG("-version", arg, { ver = arg; })
1465 if (!*av) goto bad_syntax;
1466 if ((svc = a_svcfind(a, *av)) == 0) goto fail;
1467 if (ver && versioncmp(svc->version, ver) < 0) {
1468 a_fail(a, "service-too-old",
1469 "%s", SYM_NAME(svc),
1474 if ((svcop = a_jobcreate(svc->prov)) == 0) {
1475 a_fail(a, "provider-overloaded", A_END);
1478 if (a_bgadd(a, &svcop->bg, tag, a_canceljob)) {
1479 a_jobdestroy(svcop);
1482 a_write(svc->prov, "SVCJOB", 0,
1483 "%s", a_jobidencode(svcop),
1489 a_fail(a, "bad-syntax", "svcsubmit", "[OPTIONS] SERVICE ARGS...", A_END);
1496 static void a_replycmd(admin *a, const char *status, int donep, char *av[])
1500 if ((svc = a_jobiddecode(&a->j, av[0])) == 0) {
1501 a_fail(a, "unknown-jobid", av[0], A_END);
1504 a_write(svc->bg.a, status, svc->bg.tag, "?TOKENS", av + 1, A_END);
1507 a_bgrelease(&svc->bg);
1512 static void acmd_svcok(admin *a, unsigned ac, char *av[])
1513 { a_replycmd(a, "OK", 1, av); }
1514 static void acmd_svcinfo(admin *a, unsigned ac, char *av[])
1515 { a_replycmd(a, "INFO", 0, av); }
1516 static void acmd_svcfail(admin *a, unsigned ac, char *av[])
1517 { a_replycmd(a, "FAIL", 1, av); }
1519 /*----- Administration commands -------------------------------------------*/
1521 /* --- Miscellaneous commands --- */
1523 /* --- @traceish@ --- *
1525 * Arguments: @admin *a@ = connection to complain on
1526 * @unsigned ac@ = number of arguments
1527 * @char *av[]@ = vector of arguments
1528 * @const char *what@ = what we're messing with
1529 * @const trace_opt *tt@ = options table
1530 * @unsigned *ff@ = where the flags are
1532 * Returns: Nonzero if anything changed.
1534 * Use: Guts of trace-ish commands like `trace' and `watch'.
1537 static int traceish(admin *a, unsigned ac, char *av[],
1538 const char *what, const trace_opt *tt, unsigned *ff)
1542 if (!ac || strcmp(av[0], "?") == 0) {
1544 for (t = tt; t->ch; t++) {
1545 a_info(a, "*%c%c %s",
1546 t->ch, (*ff & t->f) == t->f ? '+' : ' ', t->help, A_END);
1556 case '+': sense = 1; break;
1557 case '-': sense = 0; break;
1559 for (t = tt; t->ch; t++) {
1561 if (sense) f |= t->f;
1566 a_fail(a, "bad-%s-option", what, "%c", *p, A_END);
1582 static void acmd_trace(admin *a, unsigned ac, char *av[])
1584 if (traceish(a, ac, av, "trace", tr_opts, &tr_flags))
1585 trace_level(tr_flags);
1590 static void acmd_watch(admin *a, unsigned ac, char *av[])
1591 { traceish(a, ac, av, "watch", w_opts, &a->f); }
1593 static void alertcmd(admin *a, unsigned f_and, unsigned f_eq,
1594 const char *status, char *av[])
1595 { a_alert(f_and, f_eq, status, "USER", "?TOKENS", av, A_END); a_ok(a); }
1596 static void acmd_notify(admin *a, unsigned ac, char *av[])
1597 { alertcmd(a, AF_NOTE, AF_NOTE, "NOTE", av); }
1598 static void acmd_warn(admin *a, unsigned ac, char *av[])
1599 { alertcmd(a, AF_WARN, AF_WARN, "WARN", av); }
1601 static void acmd_port(admin *a, unsigned ac, char *av[])
1602 { a_info(a, "%u", p_port(), A_END); a_ok(a); }
1604 static void acmd_daemon(admin *a, unsigned ac, char *av[])
1606 if (flags & F_DAEMON)
1607 a_fail(a, "already-daemon", A_END);
1609 a_notify("DAEMON", A_END);
1613 a_fail(a, "daemon-error", "?ERRNO", A_END);
1621 static void acmd_jobs(admin *a, unsigned ac, char *av[])
1625 for (bg = a->bg; bg; bg = bg->next) {
1627 a_info(a, "%s", bg->tag, A_END);
1632 static void acmd_bgcancel(admin *a, unsigned ac, char *av[])
1636 if ((bg = a_bgfind(a, av[0])) == 0)
1637 a_fail(a, "unknown-tag", "%s", av[0], A_END);
1645 static void acmd_list(admin *a, unsigned ac, char *av[])
1649 for (p = p_first(); p; p = p_next(p))
1650 a_info(a, "%s", p_name(p), A_END);
1654 static void acmd_ifname(admin *a, unsigned ac, char *av[])
1658 if ((p = a_findpeer(a, av[0])) != 0) {
1659 a_info(a, "%s", p_ifname(p), A_END);
1664 static void acmd_setifname(admin *a, unsigned ac, char *av[])
1668 if ((p = a_findpeer(a, av[0])) != 0) {
1669 a_notify("NEWIFNAME", "?PEER", p, "%s", p_ifname(p), "%s", av[1], A_END);
1670 p_setifname(p, av[1]);
1675 static void acmd_getchal(admin *a, unsigned ac, char *av[])
1679 buf_init(&b, buf_i, PKBUFSZ);
1681 a_info(a, "?B64", BBASE(&b), (size_t)BLEN(&b), A_END);
1685 static void acmd_checkchal(admin *a, unsigned ac, char *av[])
1692 base64_decode(&b64, av[0], strlen(av[0]), &d);
1693 base64_decode(&b64, 0, 0, &d);
1694 buf_init(&b, d.buf, d.len);
1695 if (c_check(&b) || BBAD(&b) || BLEFT(&b))
1696 a_fail(a, "invalid-challenge", A_END);
1702 static void acmd_greet(admin *a, unsigned ac, char *av[])
1708 if ((p = a_findpeer(a, av[0])) != 0) {
1710 base64_decode(&b64, av[1], strlen(av[1]), &d);
1711 base64_decode(&b64, 0, 0, &d);
1712 p_greet(p, d.buf, d.len);
1718 static void acmd_addr(admin *a, unsigned ac, char *av[])
1723 if ((p = a_findpeer(a, av[0])) != 0) {
1725 assert(ad->sa.sa_family == AF_INET);
1726 a_info(a, "?ADDR", ad, A_END);
1731 static void acmd_peerinfo(admin *a, unsigned ac, char *av[])
1736 if ((p = a_findpeer(a, av[0])) != 0) {
1738 a_info(a, "tunnel=%s", ps->tops->name, A_END);
1739 a_info(a, "keepalive=%lu", ps->t_ka, A_END);
1744 static void acmd_servinfo(admin *a, unsigned ac, char *av[])
1746 a_info(a, "implementation=edgeware-tripe", A_END);
1747 a_info(a, "version=%s", VERSION, A_END);
1748 a_info(a, "daemon=%s", BOOL(flags & F_DAEMON), A_END);
1752 static void acmd_stats(admin *a, unsigned ac, char *av[])
1757 if ((p = a_findpeer(a, av[0])) == 0)
1761 a_info(a, "start-time=%s", timestr(st->t_start), A_END);
1762 a_info(a, "last-packet-time=%s", timestr(st->t_last), A_END);
1763 a_info(a, "last-keyexch-time=%s", timestr(st->t_kx), A_END);
1764 a_info(a, "packets-in=%lu", st->n_in, "bytes-in=%lu", st->sz_in, A_END);
1766 "packets-out=%lu", st->n_out,
1767 "bytes-out=%lu", st->sz_out,
1770 "keyexch-packets-in=%lu", st->n_kxin,
1771 "keyexch-bytes-in=%lu", st->sz_kxin,
1774 "keyexch-packets-out=%lu", st->n_kxout,
1775 "keyexch-bytes-out=%lu", st->sz_kxout,
1778 "ip-packets-in=%lu", st->n_ipin,
1779 "ip-bytes-in=%lu", st->sz_ipin,
1782 "ip-packets-out=%lu", st->n_ipout,
1783 "ip-bytes-out=%lu", st->sz_ipout,
1785 a_info(a, "rejected-packets=%lu", st->n_reject, A_END);
1789 static void acmd_kill(admin *a, unsigned ac, char *av[])
1793 if ((p = a_findpeer(a, av[0])) != 0) {
1799 static void acmd_forcekx(admin *a, unsigned ac, char *av[])
1803 if ((p = a_findpeer(a, av[0])) != 0) {
1804 kx_start(&p->kx, 1);
1809 static void acmd_reload(admin *a, unsigned ac, char *av[])
1810 { p_keyreload(); a_ok(a); }
1812 static void acmd_quit(admin *a, unsigned ac, char *av[])
1814 a_warn("SERVER", "quit", "admin-request", A_END);
1819 static void acmd_version(admin *a, unsigned ac, char *av[])
1821 a_info(a, "%s", PACKAGE, "%s", VERSION, A_END);
1825 static void acmd_tunnels(admin *a, unsigned ac, char *av[])
1829 for (i = 0; tunnels[i]; i++)
1830 a_info(a, "%s", tunnels[i]->name, A_END);
1834 /* --- The command table and help --- */
1836 typedef struct acmd {
1839 unsigned argmin, argmax;
1840 void (*func)(admin */*a*/, unsigned /*ac*/, char */*av*/[]);
1843 static void acmd_help(admin */*a*/, unsigned /*ac*/, char */*av*/[]);
1845 static const acmd acmdtab[] = {
1846 { "add", "[OPTIONS] PEER ADDR ...", 2, 0xffff, acmd_add },
1847 { "addr", "PEER", 1, 1, acmd_addr },
1848 { "bgcancel", "TAG", 1, 1, acmd_bgcancel },
1849 { "checkchal", "CHAL", 1, 1, acmd_checkchal },
1850 { "daemon", 0, 0, 0, acmd_daemon },
1851 { "eping", "[OPTIONS] PEER", 1, 0xffff, acmd_eping },
1852 { "forcekx", "PEER", 1, 1, acmd_forcekx },
1853 { "getchal", 0, 0, 0, acmd_getchal },
1854 { "greet", "PEER CHAL", 2, 2, acmd_greet },
1855 { "help", 0, 0, 0, acmd_help },
1856 { "ifname", "PEER", 1, 1, acmd_ifname },
1857 { "jobs", 0, 0, 0, acmd_jobs },
1858 { "kill", "PEER", 1, 1, acmd_kill },
1859 { "list", 0, 0, 0, acmd_list },
1860 { "notify", "MESSAGE ...", 1, 0xffff, acmd_notify },
1861 { "peerinfo", "PEER", 1, 1, acmd_peerinfo },
1862 { "ping", "[OPTIONS] PEER", 1, 0xffff, acmd_ping },
1863 { "port", 0, 0, 0, acmd_port },
1864 { "quit", 0, 0, 0, acmd_quit },
1865 { "reload", 0, 0, 0, acmd_reload },
1866 { "servinfo", 0, 0, 0, acmd_servinfo },
1867 { "setifname", "PEER NEW-NAME", 2, 2, acmd_setifname },
1868 { "svcclaim", "SERVICE VERSION", 2, 2, acmd_svcclaim },
1869 { "svcensure", "SERVICE [VERSION]", 1, 2, acmd_svcensure },
1870 { "svcfail", "JOBID TOKENS...", 1, 0xffff, acmd_svcfail },
1871 { "svcinfo", "JOBID TOKENS...", 1, 0xffff, acmd_svcinfo },
1872 { "svclist", 0, 0, 0, acmd_svclist },
1873 { "svcok", "JOBID", 1, 1, acmd_svcok },
1874 { "svcquery", "SERVICE", 1, 1, acmd_svcquery },
1875 { "svcrelease", "SERVICE", 1, 1, acmd_svcrelease },
1876 { "svcsubmit", "[OPTIONS] SERVICE TOKENS...",
1877 2, 0xffff, acmd_svcsubmit },
1878 { "stats", "PEER", 1, 1, acmd_stats },
1880 { "trace", "[OPTIONS]", 0, 1, acmd_trace },
1882 { "tunnels", 0, 0, 0, acmd_tunnels },
1883 { "version", 0, 0, 0, acmd_version },
1884 { "warn", "MESSAGE ...", 1, 0xffff, acmd_warn },
1885 { "watch", "[OPTIONS]", 0, 1, acmd_watch },
1889 static void acmd_help(admin *a, unsigned ac, char *av[])
1893 for (c = acmdtab; c->name; c++) {
1895 a_info(a, "%s", c->name, "*%s", c->help, A_END);
1897 a_info(a, "%s", c->name, A_END);
1902 /*----- Connection handling -----------------------------------------------*/
1904 /* --- @a_destroypending@ --- *
1910 * Use: Destroys pending admin connections at a safe time.
1913 static void a_destroypending(void)
1916 admin_bgop *bg, *bbg;
1917 admin_service *svc, *ssvc;
1919 /* --- Destroy connections marked as pending --- */
1921 for (a = a_dead; a; a = aa) {
1923 assert(a->f & AF_DEAD);
1925 /* --- Report what we're doing --- */
1927 T( trace(T_ADMIN, "admin: completing destruction of connection %u",
1930 /* --- Abort any background jobs in progress --- */
1932 for (bg = a->bg; bg; bg = bbg) {
1935 if (bg->tag) xfree(bg->tag);
1939 /* --- Release services I hold, and abort pending jobs --- */
1941 for (svc = a->svcs; svc; svc = ssvc) {
1945 a_jobtablefinal(&a->j);
1947 /* --- Close file descriptors and selectory --- */
1949 selbuf_destroy(&a->b);
1950 if (a->b.reader.fd != a->w.fd) close(a->b.reader.fd);
1952 if (a_stdin == a) a_stdin = 0;
1959 /* --- All pending destruction completed --- */
1964 /* --- @a_destroy@ --- *
1966 * Arguments: @admin *a@ = pointer to an admin block
1970 * Use: Destroys an admin block. This requires a certain amount of
1974 static void freequeue(oqueue *q)
1978 for (o = q->hd; o; o = oo) {
1985 static void a_destroy(admin *a)
1990 if (a->next) a->next->prev = a->prev;
1991 if (a->prev) a->prev->next = a->next;
1992 else admins = a->next;
1994 if (a->out.hd) sel_rmfile(&a->w);
2001 T( trace(T_ADMIN, "admin: killing connection %u", a->seq); )
2004 /* --- @a_line@ --- *
2006 * Arguments: @char *p@ = pointer to the line read
2007 * @size_t len@ = length of the line
2008 * @void *vp@ = pointer to my admin block
2012 * Use: Handles a line of input.
2015 static void a_line(char *p, size_t len, void *vp)
2030 selbuf_disable(&a->b);
2034 ac = str_qsplit(p, av, 16, 0, STRF_QUOTE);
2037 for (c = acmdtab; c->name; c++) {
2038 if (mystrieq(av[0], c->name)) {
2040 if (c->argmin > ac || ac > c->argmax) {
2042 a_fail(a, "bad-syntax", "%s", c->name, "", A_END);
2044 a_fail(a, "bad-syntax", "%s", c->name, "%s", c->help, A_END);
2046 c->func(a, ac, av + 1);
2050 a_fail(a, "unknown-command", "%s", av[0], A_END);
2053 /* --- @a_create@ --- *
2055 * Arguments: @int fd_in, fd_out@ = file descriptors to use
2056 * @unsigned f@ = initial flags to set
2060 * Use: Creates a new admin connection.
2063 void a_create(int fd_in, int fd_out, unsigned f)
2065 admin *a = CREATE(admin);
2067 T( static unsigned seq = 0;
2069 T( trace(T_ADMIN, "admin: accepted connection %u", a->seq); )
2073 a_jobtableinit(&a->j);
2075 if (fd_in == STDIN_FILENO) a_stdin = a;
2076 fdflags(fd_in, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
2077 if (fd_out != fd_in)
2078 fdflags(fd_out, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
2079 selbuf_init(&a->b, &sel, fd_in, a_line, a);
2080 sel_initfile(&sel, &a->w, fd_out, SEL_WRITE, a_flush, a);
2081 a->out.hd = a->out.tl = 0;
2084 if (admins) admins->prev = a;
2088 /* --- @a_accept@ --- *
2090 * Arguments: @int fd@ = file descriptor to accept
2091 * @unsigned mode@ = what to do
2092 * @void *v@ = uninteresting pointer
2096 * Use: Accepts a new admin connection.
2099 static void a_accept(int fd, unsigned mode, void *v)
2102 struct sockaddr_un sun;
2103 size_t sz = sizeof(sun);
2105 if ((nfd = accept(fd, (struct sockaddr *)&sun, &sz)) < 0) {
2106 if (errno != EINTR && errno != EAGAIN && errno != EWOULDBLOCK &&
2107 errno != ECONNABORTED && errno != EPROTO)
2108 a_warn("ADMIN", "accept-error", "?ERRNO", A_END);
2111 a_create(nfd, nfd, 0);
2114 /* --- @a_preselect@ --- *
2120 * Use: Informs the admin module that we're about to select again,
2121 * and that it should do cleanup things it has delayed until a
2125 void a_preselect(void) { if (a_dead) a_destroypending(); }
2127 /* --- @a_daemon@ --- *
2133 * Use: Informs the admin module that it's a daemon.
2136 void a_daemon(void) { flags |= F_DAEMON; }
2138 /* --- @a_init@ --- *
2140 * Arguments: @const char *name@ = socket name to create
2144 * Use: Creates the admin listening socket.
2147 void a_init(const char *name)
2151 struct sockaddr_un sun;
2152 struct sigaction sa;
2155 /* --- Create services table --- */
2157 sym_create(&a_svcs);
2159 /* --- Set up the socket address --- */
2161 sz = strlen(name) + 1;
2162 if (sz > sizeof(sun.sun_path))
2163 die(EXIT_FAILURE, "socket name `%s' too long", name);
2165 sun.sun_family = AF_UNIX;
2166 memcpy(sun.sun_path, name, sz);
2167 sz += offsetof(struct sockaddr_un, sun_path);
2169 /* --- Attempt to bind to the socket --- */
2173 if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
2174 die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno));
2175 if (bind(fd, (struct sockaddr *)&sun, sz) < 0) {
2178 if (errno != EADDRINUSE) {
2179 die(EXIT_FAILURE, "couldn't bind to address `%s': %s",
2180 sun.sun_path, strerror(e));
2183 die(EXIT_FAILURE, "too many retries; giving up");
2185 if (!connect(fd, (struct sockaddr *)&sun, sz)) {
2186 die(EXIT_FAILURE, "server already listening on admin socket `%s'",
2189 if (errno != ECONNREFUSED)
2190 die(EXIT_FAILURE, "couldn't bind to address: %s", strerror(e));
2191 if (stat(sun.sun_path, &st)) {
2192 die(EXIT_FAILURE, "couldn't stat `%s': %s",
2193 sun.sun_path, strerror(errno));
2195 if (!S_ISSOCK(st.st_mode))
2196 die(EXIT_FAILURE, "object `%s' isn't a socket", sun.sun_path);
2197 T( trace(T_ADMIN, "admin: stale socket found; removing it"); )
2198 unlink(sun.sun_path);
2202 chmod(sun.sun_path, 0600);
2203 fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
2205 die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno));
2207 /* --- Listen to the socket --- */
2209 sel_initfile(&sel, &sock, fd, SEL_READ, a_accept, 0);
2213 T( trace_custom(a_trace, 0);
2214 trace(T_ADMIN, "admin: enabled custom tracing"); )
2217 /* --- Set up signal handlers --- */
2219 sig_add(&s_term, SIGTERM, a_sigdie, 0);
2220 sig_add(&s_hup, SIGHUP, a_sighup, 0);
2221 signal(SIGPIPE, SIG_IGN);
2222 sigaction(SIGINT, 0, &sa);
2223 if (sa.sa_handler != SIG_IGN)
2224 sig_add(&s_int, SIGINT, a_sigdie, 0);
2227 /*----- That's all, folks -------------------------------------------------*/