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
;
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 * * "?ERRNO" ERRNO -- system error code
265 * * "[!]..." ... -- @dstr_putf@-like string as single token
268 void a_vformat(dstr
*d
, const char *fmt
, va_list *ap
)
274 if (d
->len
) dstr_putc(d
, ' ');
275 dstr_vputf(d
, fmt
+ 1, ap
);
276 } else if (*fmt
== '?') {
277 if (strcmp(fmt
, "?ADDR") == 0) {
278 const addr
*a
= va_arg(*ap
, const addr
*);
279 char name
[NI_MAXHOST
], serv
[NI_MAXSERV
];
281 if ((err
= getnameinfo(&a
->sa
, addrsz(a
),
282 name
, sizeof(name
), serv
, sizeof(serv
),
283 (NI_NUMERICHOST
| NI_NUMERICSERV
|
285 dstr_putf(d
, " E%d", err
);
286 u_quotify(d
, gai_strerror(err
));
288 ix
= afix(a
->sa
.sa_family
); assert(ix
>= 0);
289 u_quotify(d
, aftab
[ix
].name
);
293 } else if (strcmp(fmt
, "?B64") == 0) {
294 const octet
*p
= va_arg(*ap
, const octet
*);
295 size_t n
= va_arg(*ap
, size_t);
296 codec
*b64
= base64_class
.encoder(CDCF_NOEQPAD
, "", 0);
298 b64
->ops
->code(b64
, p
, n
, d
);
299 b64
->ops
->code(b64
, 0, 0, d
);
300 b64
->ops
->destroy(b64
);
301 } else if (strcmp(fmt
, "?TOKENS") == 0) {
302 const char *const *av
= va_arg(*ap
, const char *const *);
303 while (*av
) u_quotify(d
, *av
++);
304 } else if (strcmp(fmt
, "?PEER") == 0)
305 u_quotify(d
, p_name(va_arg(*ap
, peer
*)));
306 else if (strcmp(fmt
, "?ERRNO") == 0) {
307 dstr_putf(d
, " E%d", errno
);
308 u_quotify(d
, strerror(errno
));
312 if (*fmt
== '!') fmt
++;
314 dstr_vputf(&dd
, fmt
, ap
);
315 u_quotify(d
, dd
.buf
);
317 fmt
= va_arg(*ap
, const char *);
324 /* --- @a_format@ --- *
326 * Arguments: @dstr *d@ = where to leave the formatted message
327 * @const char *fmt@ = pointer to format string
331 * Use: Writes a tokenized message into a string, for later
335 void a_format(dstr
*d
, const char *fmt
, ...)
340 a_vformat(d
, fmt
, &ap
);
344 /* --- @a_write@, @a_vwrite@ --- *
346 * Arguments: @admin *a@ = admin connection to write to
347 * @const char *status@ = status code to report
348 * @const char *tag@ = tag string, or null
349 * @const char *fmt@ = pointer to format string
350 * @va_list *ap@ = arguments in list
351 * @...@ = other arguments
355 * Use: Sends a message to an admin connection.
358 static void a_vwrite(admin
*a
, const char *status
, const char *tag
,
359 const char *fmt
, va_list *ap
)
363 if (tag
) dstr_puts(&d
, "BG");
364 dstr_puts(&d
, status
);
365 if (tag
) u_quotify(&d
, tag
);
366 a_vformat(&d
, fmt
, ap
);
368 dosend(a
, d
.buf
, d
.len
);
372 static void a_write(admin
*a
, const char *status
, const char *tag
,
373 const char *fmt
, ...)
378 a_vwrite(a
, status
, tag
, fmt
, &ap
);
382 /* --- @a_ok@, @a_fail@ --- *
384 * Arguments: @admin *a@ = connection
385 * @const char *fmt@ = format string
386 * @...@ = other arguments
390 * Use: Convenience functions for @a_write@.
393 static void a_ok(admin
*a
) { a_write(a
, "OK", 0, A_END
); }
395 static void a_fail(admin
*a
, const char *fmt
, ...)
400 a_vwrite(a
, "FAIL", 0, fmt
, &ap
);
404 /* --- @a_info@ --- *
406 * Arguments: @admin *a@ = connection
407 * @const char *fmt@ = format string
408 * @...@ = other arguments
412 * Use: Report information to an admin client.
415 void a_info(admin
*a
, const char *fmt
, ...)
420 a_vwrite(a
, "INFO", 0, fmt
, &ap
);
424 /* --- @a_alert@, @a_valert@, @a_rawalert@ --- *
426 * Arguments: @unsigned f_and, f_eq@ = filter for connections
427 * @const char *status@ = status string
428 * @const char *fmt@ = pointer to format string
429 * @const char *p@ = pointer to raw string
430 * @size_t sz@ = size of raw string
431 * @va_list *ap@ = arguments in list
432 * @...@ = other arguments
436 * Use: Write a message to all admin connections matched by the given
440 static void a_rawalert(unsigned f_and
, unsigned f_eq
, const char *status
,
441 const char *p
, size_t sz
)
446 if (!(flags
& F_INIT
))
448 dstr_puts(&d
, status
);
451 dstr_putm(&d
, p
, sz
);
456 for (a
= admins
; a
; a
= aa
) {
458 if ((a
->f
& f_and
) == f_eq
)
459 dosend(a
, d
.buf
, d
.len
);
464 static void a_valert(unsigned f_and
, unsigned f_eq
, const char *status
,
465 const char *fmt
, va_list *ap
)
469 if (!(flags
& F_INIT
))
471 a_vformat(&d
, fmt
, ap
);
472 a_rawalert(f_and
, f_eq
, status
, fmt ? d
.buf
: 0, fmt ? d
.len
: 0);
476 static void a_alert(unsigned f_and
, unsigned f_eq
, const char *status
,
477 const char *fmt
, ...)
482 a_valert(f_and
, f_eq
, status
, fmt
, &ap
);
486 /* --- @a_warn@ --- *
488 * Arguments: @const char *fmt@ = pointer to format string
489 * @...@ = other arguments
493 * Use: Informs all admin connections of a warning.
496 void a_warn(const char *fmt
, ...)
502 a_valert(0, 0, "WARN", fmt
, &ap
);
505 fprintf(stderr
, "%s: ", QUIS
);
506 a_vformat(&d
, fmt
, &ap
);
508 dstr_write(&d
, stderr
);
514 /* --- @a_trace@ --- *
516 * Arguments: @const char *p@ = pointer to a buffer
517 * @size_t sz@ = size of the buffer
518 * @void *v@ = uninteresting pointer
522 * Use: Custom trace output handler. Sends trace messages to
523 * interested admin connections.
527 static void a_trace(const char *p
, size_t sz
, void *v
)
528 { a_rawalert(AF_TRACE
, AF_TRACE
, "TRACE", p
, sz
); }
531 /* --- @a_notify@ --- *
533 * Arguments: @const char *fmt@ = pointer to format string
534 * @...@ = other arguments
538 * Use: Sends a notification to interested admin connections.
541 void a_notify(const char *fmt
, ...)
546 a_valert(AF_NOTE
, AF_NOTE
, "NOTE", fmt
, &ap
);
550 /* --- @a_quit@ --- *
556 * Use: Shuts things down nicely.
563 FOREACH_PEER(p
, { p_destroy(p
); });
568 /* --- @a_sigdie@ --- *
570 * Arguments: @int sig@ = signal number
571 * @void *v@ = an uninteresting argument
575 * Use Shuts down on receipt of a fatal signal.
578 static void a_sigdie(int sig
, void *v
)
584 case SIGTERM
: p
= "SIGTERM"; break;
585 case SIGINT
: p
= "SIGINT"; break;
587 sprintf(buf
, "%i", sig
);
591 a_warn("SERVER", "quit", "signal", "%s", p
, A_END
);
595 /* --- @a_sighup@ --- *
597 * Arguments: @int sig@ = signal number
598 * @void *v@ = an uninteresting argument
602 * Use Logs a message about SIGHUP not being useful.
605 static void a_sighup(int sig
, void *v
)
606 { a_warn("SERVER", "ignore", "signal", "SIGHUP", A_END
); }
608 /* --- @a_parsetime@ --- *
610 * Arguments; @const char *p@ = time string to parse
612 * Returns: Time in seconds, or @< 0@ on error.
615 static long a_parsetime(const char *p
)
618 long t
= strtol(p
, &q
, 0);
624 case 's': if (q
[1] != 0)
631 /* --- @a_findpeer@ --- *
633 * Arguments: @admin *a@ = admin connection
634 * @const char *pn@ = peer name
636 * Returns: The peer, or null if not there.
638 * Use: Finds a peer, reporting an error if it failed.
641 static peer
*a_findpeer(admin
*a
, const char *pn
)
645 if ((p
= p_find(pn
)) == 0)
646 a_fail(a
, "unknown-peer", "%s", pn
, A_END
);
650 /*----- Backgrounded operations -------------------------------------------*/
653 (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>")
655 /* --- @a_bgfind@ --- *
657 * Arguments: @admin *a@ = a client block
658 * @const char *tag@ = the requested tag
660 * Returns: The requested background job, or null.
663 static admin_bgop
*a_bgfind(admin
*a
, const char *tag
)
667 for (bg
= a
->bg
; bg
; bg
= bg
->next
) {
668 if (bg
->tag
&& strcmp(tag
, bg
->tag
) == 0)
674 /* --- @a_bgrelease@ --- *
676 * Arguments: @admin_bgop *bg@ = backgrounded operation
680 * Use: Removes a backgrounded operation from the queue, since
681 * (presumably) it's done.
684 static void a_bgrelease(admin_bgop
*bg
)
688 T( trace(T_ADMIN
, "admin: release bgop %s", BGTAG(bg
)); )
689 if (bg
->tag
) xfree(bg
->tag
);
690 else selbuf_enable(&a
->b
);
691 if (bg
->next
) bg
->next
->prev
= bg
->prev
;
692 if (bg
->prev
) bg
->prev
->next
= bg
->next
;
693 else a
->bg
= bg
->next
;
695 if (!a
->bg
&& (a
->f
& AF_CLOSE
)) a_destroy(a
);
698 /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- *
700 * Arguments: @admin_bgop *bg@ = backgrounded operation
701 * @const char *fmt@ = format string
702 * @...@ = other arguments
706 * Use: Convenience functions for @a_write@.
709 static void a_bgok(admin_bgop
*bg
)
710 { a_write(bg
->a
, "OK", bg
->tag
, A_END
); }
712 static void a_bginfo(admin_bgop
*bg
, const char *fmt
, ...)
716 a_vwrite(bg
->a
, "INFO", bg
->tag
, fmt
, &ap
);
720 static void a_bgfail(admin_bgop
*bg
, const char *fmt
, ...)
724 a_vwrite(bg
->a
, "FAIL", bg
->tag
, fmt
, &ap
);
728 /* --- @a_bgadd@ --- *
730 * Arguments: @admin *a@ = administration connection
731 * @admin_bgop *bg@ = pointer to background operation
732 * @const char *tag@ = background tag, or null for foreground
733 * @void (*cancel)(admin_bgop *)@ = cancel function
735 * Returns: Zero for success, nonzero on failure.
737 * Use: Links a background job into the list.
740 static int a_bgadd(admin
*a
, admin_bgop
*bg
, const char *tag
,
741 void (*cancel
)(admin_bgop
*))
744 if (a_bgfind(a
, tag
)) {
745 a_fail(a
, "tag-exists", "%s", tag
, A_END
);
748 bg
->tag
= xstrdup(tag
);
752 selbuf_disable(&a
->b
);
758 if (a
->bg
) a
->bg
->prev
= bg
;
760 T( trace(T_ADMIN
, "admin: add bgop %s", BGTAG(bg
)); )
761 if (tag
) a_write(a
, "DETACH", tag
, A_END
);
765 /*----- Job table manipulation --------------------------------------------*/
768 #define JOB_INDEXMASK ((1ul << JOB_SHIFT) - 1)
769 #define JOB_SEQMASK ((1ul << (32 - JOB_SHIFT)) - 1)
771 #define JOB_END 0xfffffffful
773 static unsigned long a_joboffset
;
775 /* --- @a_jobidencode@ --- *
777 * Arguments: @admin_svcop *svc@ = pointer to a service operation
779 * Returns: A jobid for this job, in an internal static buffer.
781 * Use: Constructs a jobid. In order to dissuade people from
782 * predicting jobids, we obfuscate them.
784 * A `raw' jobid consists of two 16-bit fields. The low 16 bits
785 * are an index into a big array. The high 16 bits are a
786 * sequence number recording how many times that slot has been
789 * This `raw' jobid is then obfuscated by adding a randomly-
790 * generated offset, and multiplying (mod %$2^{32}$%) by a fixed
794 static const char *a_jobidencode(admin_svcop
*svc
)
796 admin_jobtable
*j
= &svc
->prov
->j
;
801 assert(svc
->index
<= JOB_INDEXMASK
);
802 seq
= j
->v
[svc
->index
].seq
;
803 assert(seq
<= JOB_SEQMASK
);
804 pre
= (unsigned long)svc
->index
| ((unsigned long)seq
<< JOB_SHIFT
);
805 sprintf(buf
, "J%08lx", ((pre
+ a_joboffset
) * 0x0f87a7a3ul
) & 0xffffffff);
809 /* --- @a_jobiddecode@ --- *
811 * Arguments: @admin_jobtable *j@ = pointer to a job table
812 * @const char *jid@ = pointer to a jobid string
814 * Returns: A pointer to the job's @svcop@ structure.
817 static admin_svcop
*a_jobiddecode(admin_jobtable
*j
, const char *jid
)
824 for (i
= 1; i
< 9; i
++) {
825 if (!isxdigit((unsigned char)jid
[i
]))
830 pre
= strtoul(jid
+ 1, 0, 16);
831 pre
= ((pre
* 0xbd11c40bul
) - a_joboffset
) & 0xffffffff;
832 i
= pre
& JOB_INDEXMASK
;
833 if (i
>= j
->n
|| j
->v
[i
].seq
!= (pre
>> JOB_SHIFT
))
835 return (j
->v
[i
].u
.op
);
838 /* --- @a_jobcreate@ --- *
840 * Arguments: @admin *a@ = pointer to administration client
842 * Returns: A pointer to a freshly-allocated @svcop@, or null.
844 * Use: Allocates a fresh @svcop@ and links it into a job table.
847 static admin_svcop
*a_jobcreate(admin
*a
)
852 admin_jobtable
*j
= &a
->j
;
854 if (j
->free
!= JOB_END
) {
856 j
->free
= j
->v
[i
].u
.next
;
859 if (j
->sz
> JOB_INDEXMASK
)
864 j
->v
= xmalloc(j
->sz
* sizeof(*j
->v
));
867 j
->v
= xrealloc(j
->v
, j
->sz
* sizeof(*j
->v
), sz
* sizeof(*j
->v
));
873 svc
= xmalloc(sizeof(*svc
));
876 svc
->next
= j
->active
;
878 if (j
->active
) j
->active
->prev
= svc
;
881 IF_TRACING(T_ADMIN
, {
882 trace(T_ADMIN
, "admin: created job %s (%u)", a_jobidencode(svc
), i
);
887 /* --- @a_jobdestroy@ --- *
889 * Arguments: @admin_svcop *svc@ = pointer to job block
893 * Use: Frees up a completed (or cancelled) job.
896 static void a_jobdestroy(admin_svcop
*svc
)
898 admin
*a
= svc
->prov
;
899 admin_jobtable
*j
= &a
->j
;
900 unsigned i
= svc
->index
;
902 IF_TRACING(T_ADMIN
, {
903 trace(T_ADMIN
, "admin: destroying job %s (%u)", a_jobidencode(svc
), i
);
905 assert(j
->v
[i
].u
.op
= svc
);
906 j
->v
[i
].u
.next
= j
->free
;
909 if (svc
->next
) svc
->next
->prev
= svc
->prev
;
910 if (svc
->prev
) svc
->prev
->next
= svc
->next
;
911 else j
->active
= svc
->next
;
914 /* --- @a_jobtableinit@ --- *
916 * Arguments: @admin_jobtable *j@ = pointer to job table
920 * Use: Initializes a job table.
923 static void a_jobtableinit(admin_jobtable
*j
)
926 a_joboffset
= GR_RANGE(&rand_global
, 0xffffffff) + 1;
933 /* --- @a_jobtablefinal@ --- *
935 * Arguments: @admin_jobtable *j@ = pointer to job table
939 * Use: Closes down a job table.
942 static void a_jobtablefinal(admin_jobtable
*j
)
944 admin_svcop
*svc
, *ssvc
;
946 for (svc
= j
->active
; svc
; svc
= ssvc
) {
948 a_bgfail(&svc
->bg
, "provider-failed", A_END
);
949 a_bgrelease(&svc
->bg
);
951 if (j
->v
) xfree(j
->v
);
954 /*----- Services infrastructure -------------------------------------------*/
956 /* --- @a_svcfind@ --- *
958 * Arguments: @admin *a@ = the requesting client
959 * @const char *name@ = service name wanted
961 * Returns: The service requested, or null.
963 * Use: Finds a service; reports an error if the service couldn't be
967 static admin_service
*a_svcfind(admin
*a
, const char *name
)
971 if ((svc
= sym_find(&a_svcs
, name
, -1, 0, 0)) == 0) {
972 a_fail(a
, "unknown-service", "%s", name
, A_END
);
978 /* --- @a_svcunlink@ --- *
980 * Arguments: @admin_service *svc@ = pointer to service structure
984 * Use: Unlinks the service from its provider, without issuing a
985 * message or freeing the structure. The version string is
989 static void a_svcunlink(admin_service
*svc
)
992 svc
->next
->prev
= svc
->prev
;
994 svc
->prev
->next
= svc
->next
;
996 svc
->prov
->svcs
= svc
->next
;
1000 /* --- @a_svcrelease@ --- *
1002 * Arguments: @admin_service *svc@ = pointer to service structure
1006 * Use: Releases a service and frees its structure.
1009 static void a_svcrelease(admin_service
*svc
)
1011 a_notify("SVCRELEASE", "%s", SYM_NAME(svc
), A_END
);
1013 sym_remove(&a_svcs
, svc
);
1016 /*----- Name resolution operations ----------------------------------------*/
1020 /* --- @before_select@ --- *
1022 * Arguments: @sel_state *s@ = the @sel@ multiplexor (unused)
1023 * @sel_args *a@ = input to @select@, to be updated
1024 * @void *p@ = a context pointer (unused)
1028 * Use: An I/O multiplexor hook, called just before waiting for I/O
1031 * Currently its main purpose is to wire ADNS into the event
1035 static void before_select(sel_state
*s
, sel_args
*a
, void *p
)
1043 /* --- Check for name-resolution progress --- *
1045 * If there is any, then clobber the timeout: one of the resolver
1046 * callbacks might have renewed its interest in a file descriptor, but too
1047 * late to affect this @select@ call.
1049 * I think, strictly, this is an mLib bug, but it's cheap enough to hack
1050 * around here. Fixing it will wait for mLib 3.
1055 if (adns_check(ads
, &q
, &n
, &p
)) break;
1058 if (n
->status
!= adns_s_ok
) {
1059 T( trace(T_ADMIN
, "admin: resop %s failed: %s",
1060 BGTAG(r
), adns_strerror(n
->status
)); )
1061 a_bgfail(&r
->bg
, "resolve-error", "%s", r
->addr
, A_END
);
1062 r
->func(r
, ARES_FAIL
);
1064 T( trace(T_ADMIN
, "admin: resop %s ok", BGTAG(r
)); )
1065 assert(n
->type
== adns_r_addr
);
1066 assert(n
->nrrs
> 0);
1067 assert(n
->rrs
.addr
[0].len
<= sizeof(r
->sa
));
1068 memcpy(&r
->sa
, &n
->rrs
.addr
[0].addr
, n
->rrs
.addr
[0].len
);
1069 setport(&r
->sa
, r
->port
);
1070 r
->func(r
, ARES_OK
);
1075 a_bgrelease(&r
->bg
);
1078 if (any
) { a
->tvp
= &a
->tv
; a
->tv
.tv_sec
= 0; a
->tv
.tv_usec
= 0; }
1080 gettimeofday(&now
, 0);
1081 adns_beforeselect(ads
, &a
->maxfd
,
1082 &a
->fd
[SEL_READ
], &a
->fd
[SEL_WRITE
], &a
->fd
[SEL_EXC
],
1083 &a
->tvp
, &a
->tv
, &now
);
1086 /* --- @after_select@ --- *
1088 * Arguments: @sel_state *s@ = the @sel@ multiplexor (unused)
1089 * @sel_args *a@ = input to @select@, to be updated
1090 * @void *p@ = a context pointer (unused)
1094 * Use: An I/O multiplexor hook, called just after waiting for I/O
1097 * Currently its main purpose is to wire ADNS into the event
1101 static void after_select(sel_state
*s
, sel_args
*a
, void *p
)
1105 gettimeofday(&now
, 0);
1106 adns_afterselect(ads
, a
->maxfd
,
1107 &a
->fd
[SEL_READ
], &a
->fd
[SEL_WRITE
], &a
->fd
[SEL_EXC
],
1113 /* --- @a_resolved@ --- *
1115 * Arguments: @struct hostent *h@ = pointer to resolved hostname
1116 * @void *v@ = pointer to resolver operation
1120 * Use: Handles a completed name resolution.
1123 static void a_resolved(struct hostent
*h
, void *v
)
1129 T( trace(T_ADMIN
, "admin: resop %s failed: %s",
1130 BGTAG(r
), hstrerror(h_errno
)); )
1131 a_bgfail(&r
->bg
, "resolve-error", "%s", r
->addr
, A_END
);
1132 r
->func(r
, ARES_FAIL
);
1134 T( trace(T_ADMIN
, "admin: resop %s ok", BGTAG(r
)); )
1135 r
->sa
.sin
.sin_family
= AF_INET
;
1136 memcpy(&r
->sa
.sin
.sin_addr
, h
->h_addr
, sizeof(struct in_addr
));
1137 setport(&r
->sa
, r
->port
);
1138 r
->func(r
, ARES_OK
);
1142 a_bgrelease(&r
->bg
);
1147 /* --- @a_restimer@ --- *
1149 * Arguments: @struct timeval *tv@ = timer
1150 * @void *v@ = pointer to resolver operation
1154 * Use: Times out a resolver.
1157 static void a_restimer(struct timeval
*tv
, void *v
)
1161 T( trace(T_ADMIN
, "admin: resop %s timeout", BGTAG(r
)); )
1162 a_bgfail(&r
->bg
, "resolver-timeout", "%s", r
->addr
, A_END
);
1163 r
->func(r
, ARES_FAIL
);
1170 a_bgrelease(&r
->bg
);
1173 /* --- @a_rescancel@ --- *
1175 * Arguments: @admin_bgop *bg@ = background operation
1179 * Use: Cancels an add operation.
1182 static void a_rescancel(admin_bgop
*bg
)
1184 admin_resop
*r
= (admin_resop
*)bg
;
1186 T( trace(T_ADMIN
, "admin: cancel resop %s", BGTAG(r
)); )
1187 r
->func(r
, ARES_FAIL
);
1197 /* --- @a_resolve@ --- *
1199 * Arguments: @admin *a@ = administration connection
1200 * @admin_resop *r@ = resolver operation to run
1201 * @const char *tag@ = background operation tag
1202 * @void (*func)(struct admin_resop *, int@ = handler function
1203 * @unsigned ac@ = number of remaining arguments
1204 * @char *av[]@ = pointer to remaining arguments
1208 * Use: Cranks up a resolver job.
1211 static void a_resolve(admin
*a
, admin_resop
*r
, const char *tag
,
1212 void (*func
)(struct admin_resop
*, int),
1213 unsigned ac
, char *av
[])
1218 const char *fam
= "ANY";
1221 struct addrinfo
*ai
, *ailist
, aihint
= { 0 };
1227 /* --- Fill in the easy bits of address --- */
1229 r
->bg
.tag
= "<starting>";
1232 if (mystrieq(av
[i
], "any"))
1233 { fam
= "ANY"; af
= AF_UNSPEC
; i
++; }
1234 else for (j
= 0; j
< NADDRFAM
; j
++) {
1235 if (mystrieq(av
[i
], aftab
[j
].name
)) {
1236 if (udpsock
[j
].fd
< 0) {
1237 a_fail(a
, "disabled-address-family", "%s", aftab
[j
].name
, A_END
);
1240 fam
= aftab
[j
].name
;
1246 if (ac
- i
!= 1 && ac
- i
!= 2) {
1247 a_fail(a
, "bad-addr-syntax", "[FAMILY] ADDRESS [PORT]", A_END
);
1250 r
->addr
= xstrdup(av
[i
]);
1254 pt
= strtoul(av
[i
+ 1], &p
, 0);
1256 struct servent
*s
= getservbyname(av
[i
+ 1], "udp");
1258 a_fail(a
, "unknown-service", "%s", av
[i
+ 1], A_END
);
1261 pt
= ntohs(s
->s_port
);
1264 if (pt
== 0 || pt
>= 65536) {
1265 a_fail(a
, "invalid-port", "%lu", pt
, A_END
);
1270 /* --- Report backgrounding --- *
1272 * Do this for consistency of interface, even if we're going to get the
1273 * answer straight away.
1276 if (a_bgadd(a
, &r
->bg
, tag
, a_rescancel
))
1278 T( trace(T_ADMIN
, "admin: %u, resop %s, hostname `%s', family `%s'",
1279 a
->seq
, BGTAG(r
), r
->addr
, fam
); )
1281 /* --- If the name is numeric, do it the easy way --- */
1283 aihint
.ai_family
= af
;
1284 aihint
.ai_socktype
= SOCK_DGRAM
;
1285 aihint
.ai_protocol
= IPPROTO_UDP
;
1286 aihint
.ai_flags
= AI_NUMERICHOST
;
1287 if (!getaddrinfo(av
[i
], 0, &aihint
, &ailist
)) {
1288 for (ai
= ailist
; ai
; ai
= ai
->ai_next
) {
1289 if ((j
= afix(ai
->ai_family
)) >= 0 && udpsock
[j
].fd
>= 0)
1293 T( trace(T_ADMIN
, "admin: resop %s failed: "
1294 "no suitable addresses returned", BGTAG(r
)); )
1295 a_bgfail(&r
->bg
, "resolve-error", "%s" , r
->addr
, A_END
);
1298 T( trace(T_ADMIN
, "admin: resop %s done the easy way", BGTAG(r
)); )
1299 assert(ai
->ai_addrlen
<= sizeof(r
->sa
));
1300 memcpy(&r
->sa
, ai
->ai_addr
, ai
->ai_addrlen
);
1301 setport(&r
->sa
, r
->port
);
1304 freeaddrinfo(ailist
);
1306 a_bgrelease(&r
->bg
);
1310 /* --- Store everything for later and crank up the resolver --- */
1312 gettimeofday(&tv
, 0);
1313 tv
.tv_sec
+= T_RESOLVE
;
1314 sel_addtimer(&sel
, &r
->t
, &tv
, a_restimer
, r
);
1316 qf
= adns_qf_search
;
1317 for (j
= 0; j
< NADDRFAM
; j
++) {
1318 if ((af
== AF_UNSPEC
|| af
== aftab
[i
].af
) && udpsock
[j
].fd
>= 0)
1321 if ((err
= adns_submit(ads
, r
->addr
, adns_r_addr
, qf
, r
, &r
->q
)) != 0) {
1322 T( trace(T_ADMIN
, "admin: resop %s adns_submit failed: %s",
1323 BGTAG(r
), strerror(err
)); )
1324 a_bgfail(&r
->bg
, "resolve-error", "%s", r
->addr
, A_END
);
1328 if (af
!= AF_UNSPEC
&& af
!= AF_INET
) {
1329 T( trace(T_ADMIN
, "admin: resop %s failed: unsupported address family",
1331 a_bgfail(&r
->bg
, "resolve-error", "%s", r
->addr
, A_END
);
1334 if (udpsock
[AFIX_INET
].fd
< 0) {
1335 a_bgfail(&r
->bg
, "disabled-address-family", "INET", A_END
);
1338 bres_byname(&r
->r
, r
->addr
, a_resolved
, r
);
1344 if (r
->addr
) xfree(r
->addr
);
1351 a_bgrelease(&r
->bg
);
1354 /*----- Option parsing ----------------------------------------------------*/
1356 #define OPTIONS(argc, argv, guts) do { \
1357 char **o_av = argv; \
1361 if (mystrieq(*o_av, "--")) { \
1366 if (**o_av == '-') \
1370 argc -= o_av - argv; \
1374 #define OPT(name, guts) if (mystrieq(*o_av, name)) { guts continue; }
1376 #define OPTARG(name, arg, guts) OPT(name, { \
1379 if (!arg) goto bad_syntax; \
1383 #define OPTTIME(name, arg, guts) OPTARG(name, o_arg, { \
1385 if ((arg = a_parsetime(o_arg)) < 0) { \
1386 a_fail(a, "bad-time-spec", "%s", o_arg, A_END); \
1392 /*----- Adding peers ------------------------------------------------------*/
1394 /* --- @a_doadd@ --- *
1396 * Arguments: @admin_resop *r@ = resolver operation
1397 * @int rc@ = how it worked
1401 * Use: Handles a completed resolution.
1404 static void a_doadd(admin_resop
*r
, int rc
)
1406 admin_addop
*add
= (admin_addop
*)r
;
1408 T( trace(T_ADMIN
, "admin: done add op %s", BGTAG(add
)); )
1410 if (rc
== ARES_OK
) {
1411 add
->peer
.sa
= add
->r
.sa
;
1412 if (p_findbyaddr(&add
->r
.sa
))
1413 a_bgfail(&add
->r
.bg
, "peer-addr-exists", "?ADDR", &add
->r
.sa
, A_END
);
1414 else if (p_find(add
->peer
.name
))
1415 a_bgfail(&add
->r
.bg
, "peer-exists", "%s", add
->peer
.name
, A_END
);
1416 else if (!p_create(&add
->peer
))
1417 a_bgfail(&add
->r
.bg
, "peer-create-fail", "%s", add
->peer
.name
, A_END
);
1422 if (add
->peer
.tag
) xfree(add
->peer
.tag
);
1423 if (add
->peer
.privtag
) xfree(add
->peer
.privtag
);
1424 xfree(add
->peer
.name
);
1427 /* --- @acmd_add@ --- *
1429 * Arguments: @admin *a@ = connection which requested the addition
1430 * @unsigned ac@ = argument count
1431 * @char *av[]@ = pointer to the argument list
1435 * Use: Adds a new peer.
1438 static void acmd_add(admin
*a
, unsigned ac
, char *av
[])
1440 const char *tag
= 0;
1443 /* --- Set stuff up --- */
1445 add
= xmalloc(sizeof(*add
));
1448 add
->peer
.privtag
= 0;
1450 add
->peer
.tops
= tun_default
;
1453 /* --- Parse options --- */
1456 OPTARG("-background", arg
, { tag
= arg
; })
1457 OPTARG("-tunnel", arg
, {
1461 a_fail(a
, "unknown-tunnel", "%s", arg
, A_END
);
1464 if (mystrieq(arg
, tunnels
[i
]->name
)) {
1465 add
->peer
.tops
= tunnels
[i
];
1470 OPTTIME("-keepalive", t
, { add
->peer
.t_ka
= t
; })
1471 OPT("-cork", { add
->peer
.f
|= KXF_CORK
; })
1472 OPTARG("-key", arg
, {
1473 if (add
->peer
.tag
) xfree(add
->peer
.tag
);
1474 add
->peer
.tag
= xstrdup(arg
);
1476 OPT("-mobile", { add
->peer
.f
|= PSF_MOBILE
; })
1477 OPTARG("-priv", arg
, {
1478 if (add
->peer
.privtag
) xfree(add
->peer
.privtag
);
1479 add
->peer
.privtag
= xstrdup(arg
);
1483 /* --- Make sure someone's not got there already --- */
1485 if (!av
[0] || !av
[1])
1488 a_fail(a
, "peer-exists", "%s", *av
, A_END
);
1491 add
->peer
.name
= xstrdup(*av
++);
1494 /* --- Crank up the resolver --- */
1496 a_resolve(a
, &add
->r
, tag
, a_doadd
, ac
, av
);
1499 /* --- Clearing up --- */
1502 a_fail(a
, "bad-syntax", "add", "[OPTIONS] PEER ADDR ...", A_END
);
1504 if (add
->peer
.name
) xfree(add
->peer
.name
);
1505 if (add
->peer
.tag
) xfree(add
->peer
.tag
);
1506 if (add
->peer
.privtag
) xfree(add
->peer
.privtag
);
1511 /*----- Ping --------------------------------------------------------------*/
1513 /* --- @a_pingcancel@ --- *
1515 * Arguments: @admin_bgop *bg@ = background operation block
1519 * Use: Cancels a running ping.
1522 static void a_pingcancel(admin_bgop
*bg
)
1524 admin_pingop
*pg
= (admin_pingop
*)bg
;
1525 T( trace(T_ADMIN
, "admin: cancel ping op %s", BGTAG(pg
)); )
1526 p_pingdone(&pg
->ping
, PING_NONOTIFY
);
1529 /* --- @a_pong@ --- *
1531 * Arguments: @int rc@ = return code
1532 * @void *v@ = ping operation block
1536 * Use: Collects what happened to a ping message.
1539 static void a_pong(int rc
, void *v
)
1541 admin_pingop
*pg
= v
;
1547 gettimeofday(&tv
, 0);
1548 tv_sub(&tv
, &tv
, &pg
->pingtime
);
1549 millis
= (double)tv
.tv_sec
* 1000 + (double)tv
.tv_usec
/1000;
1550 a_bginfo(&pg
->bg
, "ping-ok", "%.1f", millis
, A_END
);
1554 a_bginfo(&pg
->bg
, "ping-timeout", A_END
);
1558 a_bginfo(&pg
->bg
, "ping-peer-died", A_END
);
1564 T( trace(T_ADMIN
, "admin: ponged ping op %s", BGTAG(pg
)); )
1565 a_bgrelease(&pg
->bg
);
1568 /* --- @acmd_ping@, @acmd_eping@ --- *
1570 * Arguments: @admin *a@ = connection which requested the ping
1571 * @unsigned ac@ = argument count
1572 * @char *av[]@ = pointer to the argument list
1576 * Use: Pings a peer.
1579 static void a_ping(admin
*a
, unsigned ac
, char *av
[],
1580 const char *cmd
, unsigned msg
)
1584 admin_pingop
*pg
= 0;
1585 const char *tag
= 0;
1588 OPTARG("-background", arg
, { tag
= arg
; })
1589 OPTTIME("-timeout", arg
, { t
= arg
; })
1591 if (!*av
|| av
[1]) goto bad_syntax
;
1592 if ((p
= a_findpeer(a
, *av
)) == 0)
1594 pg
= xmalloc(sizeof(*pg
));
1595 gettimeofday(&pg
->pingtime
, 0);
1596 if (a_bgadd(a
, &pg
->bg
, tag
, a_pingcancel
))
1598 T( trace(T_ADMIN
, "admin: ping op %s: %s to %s",
1599 BGTAG(pg
), cmd
, p_name(p
)); )
1600 if (p_pingsend(p
, &pg
->ping
, msg
, t
, a_pong
, pg
)) {
1601 a_bgfail(&pg
->bg
, "ping-send-failed", A_END
);
1602 a_bgrelease(&pg
->bg
);
1607 a_fail(a
, "bad-syntax", "%s", cmd
, "[OPTIONS] PEER", cmd
, A_END
);
1613 static void acmd_ping(admin
*a
, unsigned ac
, char *av
[])
1614 { a_ping(a
, ac
, av
, "ping", MISC_PING
); }
1615 static void acmd_eping(admin
*a
, unsigned ac
, char *av
[])
1616 { a_ping(a
, ac
, av
, "eping", MISC_EPING
); }
1618 /*----- Service commands --------------------------------------------------*/
1620 static void acmd_svcclaim(admin
*a
, unsigned ac
, char *av
[])
1625 svc
= sym_find(&a_svcs
, av
[0], -1, sizeof(*svc
), &f
);
1627 if (versioncmp(av
[1], svc
->version
) <= 0) {
1630 "%s", SYM_NAME(svc
),
1635 a_write(svc
->prov
, "SVCCLAIM", 0, "%s", av
[0], "%s", av
[1], A_END
);
1639 svc
->version
= xstrdup(av
[1]);
1640 svc
->next
= a
->svcs
;
1642 if (a
->svcs
) a
->svcs
->prev
= svc
;
1644 a_notify("SVCCLAIM", "%s", SYM_NAME(svc
), "%s", svc
->version
, A_END
);
1648 static void acmd_svcrelease(admin
*a
, unsigned ac
, char *av
[])
1652 if ((svc
= a_svcfind(a
, av
[0])) == 0)
1654 if (svc
->prov
!= a
) {
1655 a_fail(a
, "not-service-provider", "%s", SYM_NAME(svc
), A_END
);
1662 static void acmd_svcensure(admin
*a
, unsigned ac
, char *av
[])
1666 if ((svc
= a_svcfind(a
, av
[0])) == 0)
1668 if (av
[1] && versioncmp(svc
->version
, av
[1]) < 0) {
1669 a_fail(a
, "service-too-old",
1670 "%s", SYM_NAME(svc
),
1678 static void acmd_svcquery(admin
*a
, unsigned ac
, char *av
[])
1682 if ((svc
= a_svcfind(a
, av
[0])) != 0) {
1683 a_info(a
, "name=%s", SYM_NAME(svc
), "version=%s", svc
->version
, A_END
);
1688 static void acmd_svclist(admin
*a
, unsigned ac
, char *av
[])
1693 for (sym_mkiter(&i
, &a_svcs
); (svc
= sym_next(&i
)) != 0; )
1694 a_info(a
, "%s", SYM_NAME(svc
), "%s", svc
->version
, A_END
);
1698 static void a_canceljob(admin_bgop
*bg
)
1700 admin_svcop
*svc
= (admin_svcop
*)bg
;
1702 a_write(svc
->prov
, "SVCCANCEL", 0, "%s", a_jobidencode(svc
), A_END
);
1706 static void acmd_svcsubmit(admin
*a
, unsigned ac
, char *av
[])
1708 const char *tag
= 0;
1711 const char *ver
= 0;
1715 OPTARG("-background", arg
, { tag
= arg
; })
1716 OPTARG("-version", arg
, { ver
= arg
; })
1718 if (!*av
) goto bad_syntax
;
1719 if ((svc
= a_svcfind(a
, *av
)) == 0) goto fail
;
1720 if (ver
&& versioncmp(svc
->version
, ver
) < 0) {
1721 a_fail(a
, "service-too-old",
1722 "%s", SYM_NAME(svc
),
1727 if ((svcop
= a_jobcreate(svc
->prov
)) == 0) {
1728 a_fail(a
, "provider-overloaded", A_END
);
1731 if (a_bgadd(a
, &svcop
->bg
, tag
, a_canceljob
)) {
1732 a_jobdestroy(svcop
);
1735 a_write(svc
->prov
, "SVCJOB", 0,
1736 "%s", a_jobidencode(svcop
),
1742 a_fail(a
, "bad-syntax", "svcsubmit", "[OPTIONS] SERVICE ARGS...", A_END
);
1749 static void a_replycmd(admin
*a
, const char *status
, int donep
, char *av
[])
1753 if ((svc
= a_jobiddecode(&a
->j
, av
[0])) == 0) {
1754 a_fail(a
, "unknown-jobid", av
[0], A_END
);
1757 a_write(svc
->bg
.a
, status
, svc
->bg
.tag
, "?TOKENS", av
+ 1, A_END
);
1760 a_bgrelease(&svc
->bg
);
1765 static void acmd_svcok(admin
*a
, unsigned ac
, char *av
[])
1766 { a_replycmd(a
, "OK", 1, av
); }
1767 static void acmd_svcinfo(admin
*a
, unsigned ac
, char *av
[])
1768 { a_replycmd(a
, "INFO", 0, av
); }
1769 static void acmd_svcfail(admin
*a
, unsigned ac
, char *av
[])
1770 { a_replycmd(a
, "FAIL", 1, av
); }
1772 /*----- Administration commands -------------------------------------------*/
1774 /* --- Miscellaneous commands --- */
1776 /* --- @traceish@ --- *
1778 * Arguments: @admin *a@ = connection to complain on
1779 * @unsigned ac@ = number of arguments
1780 * @char *av[]@ = vector of arguments
1781 * @const char *what@ = what we're messing with
1782 * @const trace_opt *tt@ = options table
1783 * @unsigned *ff@ = where the flags are
1785 * Returns: Nonzero if anything changed.
1787 * Use: Guts of trace-ish commands like `trace' and `watch'.
1790 static int traceish(admin
*a
, unsigned ac
, char *av
[],
1791 const char *what
, const trace_opt
*tt
, unsigned *ff
)
1795 if (!ac
|| strcmp(av
[0], "?") == 0) {
1797 for (t
= tt
; t
->ch
; t
++) {
1798 a_info(a
, "*%c%c %s",
1799 t
->ch
, (*ff
& t
->f
) == t
->f ?
'+' : ' ', t
->help
, A_END
);
1809 case '+': sense
= 1; break;
1810 case '-': sense
= 0; break;
1812 for (t
= tt
; t
->ch
; t
++) {
1814 if (sense
) f
|= t
->f
;
1819 a_fail(a
, "bad-%s-option", what
, "%c", *p
, A_END
);
1835 static void acmd_trace(admin
*a
, unsigned ac
, char *av
[])
1837 if (traceish(a
, ac
, av
, "trace", tr_opts
, &tr_flags
))
1838 trace_level(tr_flags
);
1843 static void acmd_watch(admin
*a
, unsigned ac
, char *av
[])
1844 { traceish(a
, ac
, av
, "watch", w_opts
, &a
->f
); }
1846 static void alertcmd(admin
*a
, unsigned f_and
, unsigned f_eq
,
1847 const char *status
, char *av
[])
1848 { a_alert(f_and
, f_eq
, status
, "USER", "?TOKENS", av
, A_END
); a_ok(a
); }
1849 static void acmd_notify(admin
*a
, unsigned ac
, char *av
[])
1850 { alertcmd(a
, AF_NOTE
, AF_NOTE
, "NOTE", av
); }
1851 static void acmd_warn(admin
*a
, unsigned ac
, char *av
[])
1852 { alertcmd(a
, AF_WARN
, AF_WARN
, "WARN", av
); }
1854 static void acmd_port(admin
*a
, unsigned ac
, char *av
[])
1859 for (i
= 0; i
< NADDRFAM
; i
++)
1860 if (mystrieq(av
[0], aftab
[i
].name
)) goto found
;
1861 a_fail(a
, "unknown-address-family", "%s", av
[0], A_END
);
1864 if (udpsock
[i
].fd
< 0) {
1865 a_fail(a
, "disabled-address-family", "%s", aftab
[i
].name
, A_END
);
1869 for (i
= 0; i
< NADDRFAM
; i
++)
1870 if (udpsock
[i
].fd
>= 0) goto found
;
1873 a_info(a
, "%u", p_port(i
), A_END
);
1877 static void acmd_daemon(admin
*a
, unsigned ac
, char *av
[])
1879 if (flags
& F_DAEMON
)
1880 a_fail(a
, "already-daemon", A_END
);
1882 a_notify("DAEMON", A_END
);
1886 a_fail(a
, "daemon-error", "?ERRNO", A_END
);
1894 static void acmd_jobs(admin
*a
, unsigned ac
, char *av
[])
1898 for (bg
= a
->bg
; bg
; bg
= bg
->next
) {
1900 a_info(a
, "%s", bg
->tag
, A_END
);
1905 static void acmd_bgcancel(admin
*a
, unsigned ac
, char *av
[])
1909 if ((bg
= a_bgfind(a
, av
[0])) == 0)
1910 a_fail(a
, "unknown-tag", "%s", av
[0], A_END
);
1918 static void acmd_algs(admin
*a
, unsigned ac
, char *av
[])
1923 const algswitch
*algs
;
1928 if ((p
= a_findpeer(a
, av
[0])) == 0) return;
1934 g
->ops
->grpinfo(g
, a
);
1936 "hash=%s", algs
->h
->name
,
1937 "mgf=%s", algs
->mgf
->name
,
1938 "hash-sz=%lu", (unsigned long)algs
->h
->hashsz
,
1941 "bulk-transform=%s", algs
->bulk
->ops
->name
,
1942 "bulk-overhead=%lu",
1943 (unsigned long)algs
->bulk
->ops
->overhead(algs
->bulk
),
1945 algs
->bulk
->ops
->alginfo(algs
->bulk
, a
);
1947 "cipher-data-limit=%lu",
1948 (unsigned long)algs
->bulk
->ops
->expsz(algs
->bulk
),
1953 static void acmd_list(admin
*a
, unsigned ac
, char *av
[])
1955 FOREACH_PEER(p
, { a_info(a
, "%s", p_name(p
), A_END
); });
1959 static void acmd_ifname(admin
*a
, unsigned ac
, char *av
[])
1963 if ((p
= a_findpeer(a
, av
[0])) != 0) {
1964 a_info(a
, "%s", p_ifname(p
), A_END
);
1969 static void acmd_setifname(admin
*a
, unsigned ac
, char *av
[])
1973 if ((p
= a_findpeer(a
, av
[0])) != 0) {
1974 a_notify("NEWIFNAME", "?PEER", p
, "%s", p_ifname(p
), "%s", av
[1], A_END
);
1975 p_setifname(p
, av
[1]);
1980 static void acmd_getchal(admin
*a
, unsigned ac
, char *av
[])
1984 buf_init(&b
, buf_i
, PKBUFSZ
);
1986 a_info(a
, "?B64", BBASE(&b
), (size_t)BLEN(&b
), A_END
);
1990 static void acmd_checkchal(admin
*a
, unsigned ac
, char *av
[])
1992 codec
*b64
= base64_class
.decoder(CDCF_NOEQPAD
);
1997 if ((err
= b64
->ops
->code(b64
, av
[0], strlen(av
[0]), &d
)) != 0 ||
1998 (err
= b64
->ops
->code(b64
, 0, 0, &d
)) != 0)
1999 a_fail(a
, "bad-base64", "%s", codec_strerror(err
), A_END
);
2001 buf_init(&b
, d
.buf
, d
.len
);
2002 if (c_check(&b
) || BBAD(&b
) || BLEFT(&b
))
2003 a_fail(a
, "invalid-challenge", A_END
);
2007 b64
->ops
->destroy(b64
);
2011 static void acmd_greet(admin
*a
, unsigned ac
, char *av
[])
2018 if ((p
= a_findpeer(a
, av
[0])) == 0) return;
2019 b64
= base64_class
.decoder(CDCF_NOEQPAD
);
2020 if ((err
= b64
->ops
->code(b64
, av
[1], strlen(av
[1]), &d
)) != 0 ||
2021 (err
= b64
->ops
->code(b64
, 0, 0, &d
)) != 0)
2022 a_fail(a
, "bad-base64", "%s", codec_strerror(err
), A_END
);
2024 p_greet(p
, d
.buf
, d
.len
);
2027 b64
->ops
->destroy(b64
);
2031 static void acmd_addr(admin
*a
, unsigned ac
, char *av
[])
2036 if ((p
= a_findpeer(a
, av
[0])) != 0) {
2038 a_info(a
, "?ADDR", ad
, A_END
);
2043 static void acmd_peerinfo(admin
*a
, unsigned ac
, char *av
[])
2049 if ((p
= a_findpeer(a
, av
[0])) != 0) {
2051 a_info(a
, "tunnel=%s", ps
->tops
->name
, A_END
);
2052 a_info(a
, "key=%s", p_tag(p
),
2053 "current-key=%s", p
->kx
.kpub
->tag
, A_END
);
2054 if ((ptag
= p_privtag(p
)) == 0) ptag
= "(default)";
2055 a_info(a
, "private-key=%s", ptag
,
2056 "current-private-key=%s", p
->kx
.kpriv
->tag
, A_END
);
2057 a_info(a
, "keepalive=%lu", ps
->t_ka
, A_END
);
2058 a_info(a
, "corked=%s", BOOL(p
->kx
.f
&KXF_CORK
),
2059 "mobile=%s", BOOL(ps
->f
&PSF_MOBILE
),
2065 static void acmd_servinfo(admin
*a
, unsigned ac
, char *av
[])
2067 a_info(a
, "implementation=edgeware-tripe", A_END
);
2068 a_info(a
, "version=%s", VERSION
, A_END
);
2069 a_info(a
, "daemon=%s", BOOL(flags
& F_DAEMON
), A_END
);
2073 static void acmd_stats(admin
*a
, unsigned ac
, char *av
[])
2078 if ((p
= a_findpeer(a
, av
[0])) == 0)
2082 a_info(a
, "start-time=%s", timestr(st
->t_start
), A_END
);
2083 a_info(a
, "last-packet-time=%s", timestr(st
->t_last
), A_END
);
2084 a_info(a
, "last-keyexch-time=%s", timestr(st
->t_kx
), A_END
);
2085 a_info(a
, "packets-in=%lu", st
->n_in
, "bytes-in=%lu", st
->sz_in
, A_END
);
2087 "packets-out=%lu", st
->n_out
,
2088 "bytes-out=%lu", st
->sz_out
,
2091 "keyexch-packets-in=%lu", st
->n_kxin
,
2092 "keyexch-bytes-in=%lu", st
->sz_kxin
,
2095 "keyexch-packets-out=%lu", st
->n_kxout
,
2096 "keyexch-bytes-out=%lu", st
->sz_kxout
,
2099 "ip-packets-in=%lu", st
->n_ipin
,
2100 "ip-bytes-in=%lu", st
->sz_ipin
,
2103 "ip-packets-out=%lu", st
->n_ipout
,
2104 "ip-bytes-out=%lu", st
->sz_ipout
,
2106 a_info(a
, "rejected-packets=%lu", st
->n_reject
, A_END
);
2110 static void acmd_kill(admin
*a
, unsigned ac
, char *av
[])
2114 if ((p
= a_findpeer(a
, av
[0])) != 0) {
2120 static void acmd_forcekx(admin
*a
, unsigned ac
, char *av
[])
2124 if ((p
= a_findpeer(a
, av
[0])) != 0) {
2125 kx_start(&p
->kx
, 1);
2130 static void acmd_reload(admin
*a
, unsigned ac
, char *av
[])
2131 { p_keyreload(); a_ok(a
); }
2133 static void acmd_quit(admin
*a
, unsigned ac
, char *av
[])
2135 a_warn("SERVER", "quit", "admin-request", A_END
);
2140 static void acmd_version(admin
*a
, unsigned ac
, char *av
[])
2142 a_info(a
, "%s", PACKAGE
, "%s", VERSION
, A_END
);
2146 static void acmd_tunnels(admin
*a
, unsigned ac
, char *av
[])
2150 for (i
= 0; tunnels
[i
]; i
++)
2151 a_info(a
, "%s", tunnels
[i
]->name
, A_END
);
2155 /* --- The command table and help --- */
2157 typedef struct acmd
{
2160 unsigned argmin
, argmax
;
2161 void (*func
)(admin */
*a*/
, unsigned /*ac*/, char */
*av*/
[]);
2164 static void acmd_help(admin */
*a*/
, unsigned /*ac*/, char */
*av*/
[]);
2166 static const acmd acmdtab
[] = {
2167 { "add", "[OPTIONS] PEER ADDR ...", 2, 0xffff, acmd_add
},
2168 { "addr", "PEER", 1, 1, acmd_addr
},
2169 { "algs", "[PEER]", 0, 1, acmd_algs
},
2170 { "bgcancel", "TAG", 1, 1, acmd_bgcancel
},
2171 { "checkchal", "CHAL", 1, 1, acmd_checkchal
},
2172 { "daemon", 0, 0, 0, acmd_daemon
},
2173 { "eping", "[OPTIONS] PEER", 1, 0xffff, acmd_eping
},
2174 { "forcekx", "PEER", 1, 1, acmd_forcekx
},
2175 { "getchal", 0, 0, 0, acmd_getchal
},
2176 { "greet", "PEER CHAL", 2, 2, acmd_greet
},
2177 { "help", 0, 0, 0, acmd_help
},
2178 { "ifname", "PEER", 1, 1, acmd_ifname
},
2179 { "jobs", 0, 0, 0, acmd_jobs
},
2180 { "kill", "PEER", 1, 1, acmd_kill
},
2181 { "list", 0, 0, 0, acmd_list
},
2182 { "notify", "MESSAGE ...", 1, 0xffff, acmd_notify
},
2183 { "peerinfo", "PEER", 1, 1, acmd_peerinfo
},
2184 { "ping", "[OPTIONS] PEER", 1, 0xffff, acmd_ping
},
2185 { "port", "[FAMILY]", 0, 1, acmd_port
},
2186 { "quit", 0, 0, 0, acmd_quit
},
2187 { "reload", 0, 0, 0, acmd_reload
},
2188 { "servinfo", 0, 0, 0, acmd_servinfo
},
2189 { "setifname", "PEER NEW-NAME", 2, 2, acmd_setifname
},
2190 { "stats", "PEER", 1, 1, acmd_stats
},
2191 { "svcclaim", "SERVICE VERSION", 2, 2, acmd_svcclaim
},
2192 { "svcensure", "SERVICE [VERSION]", 1, 2, acmd_svcensure
},
2193 { "svcfail", "JOBID TOKENS...", 1, 0xffff, acmd_svcfail
},
2194 { "svcinfo", "JOBID TOKENS...", 1, 0xffff, acmd_svcinfo
},
2195 { "svclist", 0, 0, 0, acmd_svclist
},
2196 { "svcok", "JOBID", 1, 1, acmd_svcok
},
2197 { "svcquery", "SERVICE", 1, 1, acmd_svcquery
},
2198 { "svcrelease", "SERVICE", 1, 1, acmd_svcrelease
},
2199 { "svcsubmit", "[OPTIONS] SERVICE TOKENS...",
2200 2, 0xffff, acmd_svcsubmit
},
2202 { "trace", "[OPTIONS]", 0, 1, acmd_trace
},
2204 { "tunnels", 0, 0, 0, acmd_tunnels
},
2205 { "version", 0, 0, 0, acmd_version
},
2206 { "warn", "MESSAGE ...", 1, 0xffff, acmd_warn
},
2207 { "watch", "[OPTIONS]", 0, 1, acmd_watch
},
2211 static void acmd_help(admin
*a
, unsigned ac
, char *av
[])
2215 for (c
= acmdtab
; c
->name
; c
++) {
2217 a_info(a
, "%s", c
->name
, "*%s", c
->help
, A_END
);
2219 a_info(a
, "%s", c
->name
, A_END
);
2224 /*----- Connection handling -----------------------------------------------*/
2226 /* --- @a_destroypending@ --- *
2232 * Use: Destroys pending admin connections at a safe time.
2235 static void a_destroypending(void)
2237 admin
*a
, *aa
, *head
;
2238 admin_bgop
*bg
, *bbg
;
2239 admin_service
*svc
, *ssvc
;
2241 /* --- Destroy connections marked as pending --- *
2243 * Slightly messy. Killing clients may cause others to finally die. Make
2244 * sure that they can be put on the list without clobbering anything or
2251 for (a
= head
; a
; a
= aa
) {
2253 assert(a
->f
& AF_DEAD
);
2255 /* --- Report what we're doing --- */
2257 T( trace(T_ADMIN
, "admin: completing destruction of connection %u",
2260 /* --- If this is the foreground client then shut down --- */
2262 if (a
->f
& AF_FOREGROUND
) {
2263 T( trace(T_ADMIN
, "admin: foreground client quit: shutting down"); )
2264 a_warn("SERVER", "quit", "foreground-eof", A_END
);
2268 /* --- Abort any background jobs in progress --- */
2270 for (bg
= a
->bg
; bg
; bg
= bbg
) {
2273 if (bg
->tag
) xfree(bg
->tag
);
2277 /* --- Release services I hold, and abort pending jobs --- */
2279 for (svc
= a
->svcs
; svc
; svc
= ssvc
) {
2283 a_jobtablefinal(&a
->j
);
2285 /* --- Close file descriptors and selectory --- */
2287 selbuf_destroy(&a
->b
);
2288 if (a
->b
.reader
.fd
!= a
->w
.fd
) close(a
->b
.reader
.fd
);
2290 if (a_stdin
== a
) a_stdin
= 0;
2299 /* --- @a_destroy@ --- *
2301 * Arguments: @admin *a@ = pointer to an admin block
2305 * Use: Destroys an admin block. This requires a certain amount of
2309 static void freequeue(oqueue
*q
)
2313 for (o
= q
->hd
; o
; o
= oo
) {
2320 static void a_destroy(admin
*a
)
2325 if (a
->next
) a
->next
->prev
= a
->prev
;
2326 if (a
->prev
) a
->prev
->next
= a
->next
;
2327 else admins
= a
->next
;
2329 if (a
->out
.hd
) sel_rmfile(&a
->w
);
2336 T( trace(T_ADMIN
, "admin: killing connection %u", a
->seq
); )
2339 /* --- @a_line@ --- *
2341 * Arguments: @char *p@ = pointer to the line read
2342 * @size_t len@ = length of the line
2343 * @void *vp@ = pointer to my admin block
2347 * Use: Handles a line of input.
2350 static void a_line(char *p
, size_t len
, void *vp
)
2365 selbuf_disable(&a
->b
);
2369 ac
= str_qsplit(p
, av
, N(av
) - 1, 0, STRF_QUOTE
);
2373 for (c
= acmdtab
; c
->name
; c
++) {
2374 if (mystrieq(av
[0], c
->name
)) {
2376 if (c
->argmin
> ac
|| ac
> c
->argmax
) {
2378 a_fail(a
, "bad-syntax", "%s", c
->name
, "", A_END
);
2380 a_fail(a
, "bad-syntax", "%s", c
->name
, "%s", c
->help
, A_END
);
2382 c
->func(a
, ac
, av
+ 1);
2386 a_fail(a
, "unknown-command", "%s", av
[0], A_END
);
2389 /* --- @a_create@ --- *
2391 * Arguments: @int fd_in, fd_out@ = file descriptors to use
2392 * @unsigned f@ = initial flags to set
2396 * Use: Creates a new admin connection.
2399 void a_create(int fd_in
, int fd_out
, unsigned f
)
2401 admin
*a
= CREATE(admin
);
2403 T( static unsigned seq
= 0;
2405 T( trace(T_ADMIN
, "admin: accepted connection %u", a
->seq
); )
2409 a_jobtableinit(&a
->j
);
2411 if (fd_in
== STDIN_FILENO
) a_stdin
= a
;
2412 fdflags(fd_in
, O_NONBLOCK
, O_NONBLOCK
, FD_CLOEXEC
, FD_CLOEXEC
);
2413 if (fd_out
!= fd_in
)
2414 fdflags(fd_out
, O_NONBLOCK
, O_NONBLOCK
, FD_CLOEXEC
, FD_CLOEXEC
);
2415 selbuf_init(&a
->b
, &sel
, fd_in
, a_line
, a
);
2416 sel_initfile(&sel
, &a
->w
, fd_out
, SEL_WRITE
, a_flush
, a
);
2417 a
->out
.hd
= a
->out
.tl
= 0;
2420 if (admins
) admins
->prev
= a
;
2424 /* --- @a_accept@ --- *
2426 * Arguments: @int fd@ = file descriptor to accept
2427 * @unsigned mode@ = what to do
2428 * @void *v@ = uninteresting pointer
2432 * Use: Accepts a new admin connection.
2435 static void a_accept(int fd
, unsigned mode
, void *v
)
2438 struct sockaddr_un sun
;
2439 socklen_t sz
= sizeof(sun
);
2441 if ((nfd
= accept(fd
, (struct sockaddr
*)&sun
, &sz
)) < 0) {
2442 if (errno
!= EINTR
&& errno
!= EAGAIN
&& errno
!= EWOULDBLOCK
&&
2443 errno
!= ECONNABORTED
&& errno
!= EPROTO
)
2444 a_warn("ADMIN", "accept-error", "?ERRNO", A_END
);
2447 a_create(nfd
, nfd
, 0);
2450 /* --- @a_preselect@ --- *
2456 * Use: Informs the admin module that we're about to select again,
2457 * and that it should do cleanup things it has delayed until a
2461 void a_preselect(void) { if (a_dead
) a_destroypending(); }
2463 /* --- @a_daemon@ --- *
2469 * Use: Informs the admin module that it's a daemon.
2472 void a_daemon(void) { flags
|= F_DAEMON
; }
2474 /* --- @a_init@ --- *
2476 * Arguments: @const char *name@ = socket name to create
2477 * @uid_t u@ = user to own the socket
2478 * @gid_t g@ = group to own the socket
2479 * @mode_t m@ = permissions to set on the socket
2483 * Use: Creates the admin listening socket.
2486 void a_init(const char *name
, uid_t u
, gid_t g
, mode_t m
)
2490 struct sockaddr_un sun
;
2491 struct sigaction sa
;
2498 /* --- Create services table --- */
2500 sym_create(&a_svcs
);
2502 /* --- Set up the socket address --- */
2504 sz
= strlen(name
) + 1;
2505 if (sz
> sizeof(sun
.sun_path
))
2506 die(EXIT_FAILURE
, "socket name `%s' too long", name
);
2508 sun
.sun_family
= AF_UNIX
;
2509 memcpy(sun
.sun_path
, name
, sz
);
2510 sz
+= offsetof(struct sockaddr_un
, sun_path
);
2512 /* --- Attempt to bind to the socket --- */
2514 omask
= umask(0077);
2516 if ((fd
= socket(PF_UNIX
, SOCK_STREAM
, 0)) < 0)
2517 die(EXIT_FAILURE
, "couldn't create socket: %s", strerror(errno
));
2518 if (bind(fd
, (struct sockaddr
*)&sun
, sz
) < 0) {
2521 if (errno
!= EADDRINUSE
) {
2522 die(EXIT_FAILURE
, "couldn't bind to address `%s': %s",
2523 sun
.sun_path
, strerror(e
));
2526 die(EXIT_FAILURE
, "too many retries; giving up");
2528 if (!connect(fd
, (struct sockaddr
*)&sun
, sz
)) {
2529 die(EXIT_FAILURE
, "server already listening on admin socket `%s'",
2532 if (errno
!= ECONNREFUSED
)
2533 die(EXIT_FAILURE
, "couldn't bind to address: %s", strerror(e
));
2534 if (stat(sun
.sun_path
, &st
)) {
2535 die(EXIT_FAILURE
, "couldn't stat `%s': %s",
2536 sun
.sun_path
, strerror(errno
));
2538 if (!S_ISSOCK(st
.st_mode
))
2539 die(EXIT_FAILURE
, "object `%s' isn't a socket", sun
.sun_path
);
2540 T( trace(T_ADMIN
, "admin: stale socket found; removing it"); )
2541 unlink(sun
.sun_path
);
2545 if (chown(sun
.sun_path
, u
, g
)) {
2546 die(EXIT_FAILURE
, "failed to set socket owner: %s",
2549 if (chmod(sun
.sun_path
, m
)) {
2550 die(EXIT_FAILURE
, "failed to set socket permissions: %s",
2554 fdflags(fd
, O_NONBLOCK
, O_NONBLOCK
, FD_CLOEXEC
, FD_CLOEXEC
);
2556 die(EXIT_FAILURE
, "couldn't listen on socket: %s", strerror(errno
));
2558 /* --- Listen to the socket --- */
2560 sel_initfile(&sel
, &sock
, fd
, SEL_READ
, a_accept
, 0);
2564 if ((err
= adns_init(&ads
,
2565 (adns_if_permit_ipv4
| adns_if_permit_ipv6
|
2566 adns_if_noserverwarn
| adns_if_nosigpipe
|
2569 die(EXIT_FAILURE
, "failed to initialize ADNS: %s", strerror(errno
));
2570 sel_addhook(&sel
, &hook
, before_select
, after_select
, 0);
2574 T( trace_custom(a_trace
, 0);
2575 trace(T_ADMIN
, "admin: enabled custom tracing"); )
2578 /* --- Set up signal handlers --- */
2580 sig_add(&s_term
, SIGTERM
, a_sigdie
, 0);
2581 sig_add(&s_hup
, SIGHUP
, a_sighup
, 0);
2582 sigaction(SIGINT
, 0, &sa
);
2583 if (sa
.sa_handler
!= SIG_IGN
)
2584 sig_add(&s_int
, SIGINT
, a_sigdie
, 0);
2587 /*----- That's all, folks -------------------------------------------------*/