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 /* --- @quotify@ --- *
236 * Arguments: @dstr *d@ = where to write the answer
237 * @const char *p@ = string to quotify
241 * Use: Quotes the given string if necessary, according to our
245 static void quotify(dstr
*d
, const char *p
)
249 if (*p
&& !p
[strcspn(p
, "\"' \t\n\v")])
254 if (*p
== '\\' || *p
== '\"')
262 /* --- @a_vformat@ --- *
264 * Arguments: @dstr *d@ = where to leave the formatted message
265 * @const char *fmt@ = pointer to format string
266 * @va_list ap@ = arguments in list
270 * Use: Main message token formatting driver.
273 static void a_vformat(dstr
*d
, const char *fmt
, va_list ap
)
280 dstr_vputf(d
, fmt
+ 1, &ap
);
281 } else if (*fmt
== '?') {
282 if (strcmp(fmt
, "?ADDR") == 0) {
283 const addr
*a
= va_arg(ap
, const addr
*);
284 switch (a
->sa
.sa_family
) {
287 quotify(d
, inet_ntoa(a
->sin
.sin_addr
));
288 dstr_putf(d
, " %u", (unsigned)ntohs(a
->sin
.sin_port
));
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);
301 base64_encode(&b64
, p
, n
, d
);
302 base64_encode(&b64
, 0, 0, d
);
303 while (d
->len
&& d
->buf
[d
->len
- 1] == '=') d
->len
--;
304 } else if (strcmp(fmt
, "?TOKENS") == 0) {
305 const char *const *av
= va_arg(ap
, const char *const *);
306 while (*av
) quotify(d
, *av
++);
307 } else if (strcmp(fmt
, "?PEER") == 0)
308 quotify(d
, p_name(va_arg(ap
, peer
*)));
309 else if (strcmp(fmt
, "?ERRNO") == 0) {
310 dstr_putf(d
, " E%d", errno
);
311 quotify(d
, strerror(errno
));
315 if (*fmt
== '!') fmt
++;
317 dstr_vputf(&dd
, fmt
, &ap
);
320 fmt
= va_arg(ap
, const char *);
326 /* --- @a_write@, @a_vwrite@ --- *
328 * Arguments: @admin *a@ = admin connection to write to
329 * @const char *status@ = status code to report
330 * @const char *tag@ = tag string, or null
331 * @const char *fmt@ = pointer to format string
332 * @va_list ap@ = arguments in list
333 * @...@ = other arguments
337 * Use: Sends a message to an admin connection.
340 static void a_vwrite(admin
*a
, const char *status
, const char *tag
,
341 const char *fmt
, va_list ap
)
344 if (tag
) dstr_puts(&d
, "BG");
345 dstr_puts(&d
, status
);
346 if (tag
) quotify(&d
, tag
);
347 a_vformat(&d
, fmt
, ap
);
349 dosend(a
, d
.buf
, d
.len
);
353 static void a_write(admin
*a
, const char *status
, const char *tag
,
354 const char *fmt
, ...)
358 a_vwrite(a
, status
, tag
, fmt
, ap
);
362 /* --- @a_ok@, @a_info@, @a_fail@ --- *
364 * Arguments: @admin *a@ = connection
365 * @const char *fmt@ = format string
366 * @...@ = other arguments
370 * Use: Convenience functions for @a_write@.
373 static void a_ok(admin
*a
) { a_write(a
, "OK", 0, A_END
); }
375 static void a_info(admin
*a
, const char *fmt
, ...)
379 a_vwrite(a
, "INFO", 0, fmt
, ap
);
383 static void a_fail(admin
*a
, const char *fmt
, ...)
387 a_vwrite(a
, "FAIL", 0, fmt
, ap
);
391 /* --- @a_alert@, @a_valert@, @a_rawalert@ --- *
393 * Arguments: @unsigned f_and, f_eq@ = filter for connections
394 * @const char *status@ = status string
395 * @const char *fmt@ = pointer to format string
396 * @const char *p@ = pointer to raw string
397 * @size_t sz@ = size of raw string
398 * @va_list ap@ = arguments in list
399 * @...@ = other arguments
403 * Use: Write a message to all admin connections matched by the given
407 static void a_rawalert(unsigned f_and
, unsigned f_eq
, const char *status
,
408 const char *p
, size_t sz
)
413 if (!(flags
& F_INIT
))
415 dstr_puts(&d
, status
);
418 dstr_putm(&d
, p
, sz
);
423 for (a
= admins
; a
; a
= aa
) {
425 if ((a
->f
& f_and
) == f_eq
)
426 dosend(a
, d
.buf
, d
.len
);
431 static void a_valert(unsigned f_and
, unsigned f_eq
, const char *tag
,
432 const char *fmt
, va_list ap
)
436 if (!(flags
& F_INIT
))
438 a_vformat(&d
, fmt
, ap
);
439 a_rawalert(f_and
, f_eq
, tag
, fmt ? d
.buf
: 0, fmt ? d
.len
: 0);
443 static void a_alert(unsigned f_and
, unsigned f_eq
, const char *tag
,
444 const char *fmt
, ...)
448 a_valert(f_and
, f_eq
, tag
, fmt
, ap
);
452 /* --- @a_warn@ --- *
454 * Arguments: @const char *fmt@ = pointer to format string
455 * @...@ = other arguments
459 * Use: Informs all admin connections of a warning.
462 void a_warn(const char *fmt
, ...)
468 a_valert(0, 0, "WARN", fmt
, ap
);
471 fprintf(stderr
, "%s: ", QUIS
);
472 a_vformat(&d
, fmt
, ap
);
474 dstr_write(&d
, stderr
);
480 /* --- @a_trace@ --- *
482 * Arguments: @const char *p@ = pointer to a buffer
483 * @size_t sz@ = size of the buffer
484 * @void *v@ = uninteresting pointer
488 * Use: Custom trace output handler. Sends trace messages to
489 * interested admin connections.
493 static void a_trace(const char *p
, size_t sz
, void *v
)
494 { a_rawalert(AF_TRACE
, AF_TRACE
, "TRACE", p
, sz
); }
497 /* --- @a_notify@ --- *
499 * Arguments: @const char *fmt@ = pointer to format string
500 * @...@ = other arguments
504 * Use: Sends a notification to interested admin connections.
507 void a_notify(const char *fmt
, ...)
512 a_valert(AF_NOTE
, AF_NOTE
, "NOTE", fmt
, ap
);
516 /* --- @a_quit@ --- *
522 * Use: Shuts things down nicely.
531 while ((p
= p_first()) != 0)
536 /* --- @a_sigdie@ --- *
538 * Arguments: @int sig@ = signal number
539 * @void *v@ = an uninteresting argument
543 * Use Shuts down on receipt of a fatal signal.
546 static void a_sigdie(int sig
, void *v
)
552 case SIGTERM
: p
= "SIGTERM"; break;
553 case SIGINT
: p
= "SIGINT"; break;
555 sprintf(buf
, "%i", sig
);
559 a_warn("SERVER", "quit", "signal", "%s", p
, A_END
);
563 /* --- @a_sighup@ --- *
565 * Arguments: @int sig@ = signal number
566 * @void *v@ = an uninteresting argument
570 * Use Logs a message about SIGHUP not being useful.
573 static void a_sighup(int sig
, void *v
)
575 a_warn("SERVER", "ignore", "signal", "SIGHUP", A_END
);
578 /* --- @a_parsetime@ --- *
580 * Arguments; @const char *p@ = time string to parse
582 * Returns: Time in seconds, or @< 0@ on error.
585 static long a_parsetime(const char *p
)
588 long t
= strtol(p
, &q
, 0);
594 case 's': if (q
[1] != 0)
601 /* --- @a_findpeer@ --- *
603 * Arguments: @admin *a@ = admin connection
604 * @const char *pn@ = peer name
606 * Returns: The peer, or null if not there.
608 * Use: Finds a peer, reporting an error if it failed.
611 static peer
*a_findpeer(admin
*a
, const char *pn
)
615 if ((p
= p_find(pn
)) == 0)
616 a_fail(a
, "unknown-peer", "%s", pn
, A_END
);
620 /*----- Backgrounded operations -------------------------------------------*/
623 (((admin_bgop *)(bg))->tag ? ((admin_bgop *)(bg))->tag : "<foreground>")
625 /* --- @a_bgfind@ --- *
627 * Arguments: @admin *a@ = a client block
628 * @const char *tag@ = the requested tag
630 * Returns: The requested background job, or null.
633 static admin_bgop
*a_bgfind(admin
*a
, const char *tag
)
637 for (bg
= a
->bg
; bg
; bg
= bg
->next
) {
638 if (bg
->tag
&& strcmp(tag
, bg
->tag
) == 0)
644 /* --- @a_bgrelease@ --- *
646 * Arguments: @admin_bgop *bg@ = backgrounded operation
650 * Use: Removes a backgrounded operation from the queue, since
651 * (presumably) it's done.
654 static void a_bgrelease(admin_bgop
*bg
)
658 T( trace(T_ADMIN
, "admin: release bgop %s", BGTAG(bg
)); )
659 if (bg
->tag
) xfree(bg
->tag
);
660 else selbuf_enable(&a
->b
);
661 if (bg
->next
) bg
->next
->prev
= bg
->prev
;
662 if (bg
->prev
) bg
->prev
->next
= bg
->next
;
663 else a
->bg
= bg
->next
;
665 if (!a
->bg
&& (a
->f
& AF_CLOSE
)) a_destroy(a
);
668 /* --- @a_bgok@, @a_bginfo@, @a_bgfail@ --- *
670 * Arguments: @admin_bgop *bg@ = backgrounded operation
671 * @const char *fmt@ = format string
672 * @...@ = other arguments
676 * Use: Convenience functions for @a_write@.
679 static void a_bgok(admin_bgop
*bg
)
680 { a_write(bg
->a
, "OK", bg
->tag
, A_END
); }
682 static void a_bginfo(admin_bgop
*bg
, const char *fmt
, ...)
686 a_vwrite(bg
->a
, "INFO", bg
->tag
, fmt
, ap
);
690 static void a_bgfail(admin_bgop
*bg
, const char *fmt
, ...)
694 a_vwrite(bg
->a
, "FAIL", bg
->tag
, fmt
, ap
);
698 /* --- @a_bgadd@ --- *
700 * Arguments: @admin *a@ = administration connection
701 * @admin_bgop *bg@ = pointer to background operation
702 * @const char *tag@ = background tag, or null for foreground
703 * @void (*cancel)(admin_bgop *)@ = cancel function
705 * Returns: Zero for success, nonzero on failure.
707 * Use: Links a background job into the list.
710 static int a_bgadd(admin
*a
, admin_bgop
*bg
, const char *tag
,
711 void (*cancel
)(admin_bgop
*))
714 if (a_bgfind(a
, tag
)) {
715 a_fail(a
, "tag-exists", "%s", tag
, A_END
);
718 bg
->tag
= xstrdup(tag
);
722 selbuf_disable(&a
->b
);
728 if (a
->bg
) a
->bg
->prev
= bg
;
730 T( trace(T_ADMIN
, "admin: add bgop %s", BGTAG(bg
)); )
731 if (tag
) a_write(a
, "DETACH", tag
, A_END
);
735 /*----- Job table manipulation --------------------------------------------*/
738 #define JOB_INDEXMASK ((1ul << JOB_SHIFT) - 1)
739 #define JOB_SEQMASK ((1ul << (32 - JOB_SHIFT)) - 1)
741 #define JOB_END 0xfffffffful
743 static unsigned long a_joboffset
;
745 /* --- @a_jobidencode@ --- *
747 * Arguments: @admin_svcop *svc@ = pointer to a service operation
749 * Returns: A jobid for this job, in an internal static buffer.
751 * Use: Constructs a jobid. In order to dissuade people from
752 * predicting jobids, we obfuscate them.
754 * A `raw' jobid consists of two 16-bit fields. The low 16 bits
755 * are an index into a big array. The high 16 bits are a
756 * sequence number recording how many times that slot has been
759 * This `raw' jobid is then obfuscated by adding a randomly-
760 * generated offset, and multiplying (mod %$2^{32}$%) by a fixed
764 static const char *a_jobidencode(admin_svcop
*svc
)
766 admin_jobtable
*j
= &svc
->prov
->j
;
771 assert(svc
->index
<= JOB_INDEXMASK
);
772 seq
= j
->v
[svc
->index
].seq
;
773 assert(seq
<= JOB_SEQMASK
);
774 pre
= (unsigned long)svc
->index
| ((unsigned long)seq
<< JOB_SHIFT
);
775 sprintf(buf
, "J%08lx", ((pre
+ a_joboffset
) * 0x0f87a7a3ul
) & 0xffffffff);
779 /* --- @a_jobiddecode@ --- *
781 * Arguments: @admin_jobtable *j@ = pointer to a job table
782 * @const char *jid@ = pointer to a jobid string
784 * Returns: A pointer to the job's @svcop@ structure.
787 static admin_svcop
*a_jobiddecode(admin_jobtable
*j
, const char *jid
)
794 for (i
= 1; i
< 9; i
++) {
795 if (!isxdigit((unsigned char)jid
[i
]))
800 pre
= strtoul(jid
+ 1, 0, 16);
801 pre
= ((pre
* 0xbd11c40bul
) - a_joboffset
) & 0xffffffff;
802 i
= pre
& JOB_INDEXMASK
;
803 if (i
>= j
->n
|| j
->v
[i
].seq
!= (pre
>> JOB_SHIFT
))
805 return (j
->v
[i
].u
.op
);
808 /* --- @a_jobcreate@ --- *
810 * Arguments: @admin *a@ = pointer to administration client
812 * Returns: A pointer to a freshly-allocated @svcop@, or null.
814 * Use: Allocates a fresh @svcop@ and links it into a job table.
817 static admin_svcop
*a_jobcreate(admin
*a
)
822 admin_jobtable
*j
= &a
->j
;
824 if (j
->free
!= JOB_END
) {
826 j
->free
= j
->v
[i
].u
.next
;
829 if (j
->sz
> JOB_INDEXMASK
)
834 j
->v
= xmalloc(j
->sz
* sizeof(*j
->v
));
837 j
->v
= xrealloc(j
->v
, j
->sz
* sizeof(*j
->v
), sz
* sizeof(*j
->v
));
843 svc
= xmalloc(sizeof(*svc
));
846 svc
->next
= j
->active
;
848 if (j
->active
) j
->active
->prev
= svc
;
851 IF_TRACING(T_ADMIN
, {
852 trace(T_ADMIN
, "admin: created job %s (%u)", a_jobidencode(svc
), i
);
857 /* --- @a_jobdestroy@ --- *
859 * Arguments: @admin_svcop *svc@ = pointer to job block
863 * Use: Frees up a completed (or cancelled) job.
866 static void a_jobdestroy(admin_svcop
*svc
)
868 admin
*a
= svc
->prov
;
869 admin_jobtable
*j
= &a
->j
;
870 unsigned i
= svc
->index
;
872 IF_TRACING(T_ADMIN
, {
873 trace(T_ADMIN
, "admin: destroying job %s (%u)", a_jobidencode(svc
), i
);
875 assert(j
->v
[i
].u
.op
= svc
);
876 j
->v
[i
].u
.next
= j
->free
;
879 if (svc
->next
) svc
->next
->prev
= svc
->prev
;
880 if (svc
->prev
) svc
->prev
->next
= svc
->next
;
881 else j
->active
= svc
->next
;
884 /* --- @a_jobtableinit@ --- *
886 * Arguments: @admin_jobtable *j@ = pointer to job table
890 * Use: Initializes a job table.
893 static void a_jobtableinit(admin_jobtable
*j
)
896 a_joboffset
= GR_RANGE(&rand_global
, 0xffffffff) + 1;
903 /* --- @a_jobtablefinal@ --- *
905 * Arguments: @admin_jobtable *j@ = pointer to job table
909 * Use: Closes down a job table.
912 static void a_jobtablefinal(admin_jobtable
*j
)
914 admin_svcop
*svc
, *ssvc
;
916 for (svc
= j
->active
; svc
; svc
= ssvc
) {
918 a_bgfail(&svc
->bg
, "provider-failed", A_END
);
919 a_bgrelease(&svc
->bg
);
921 if (j
->v
) xfree(j
->v
);
924 /*----- Services infrastructure -------------------------------------------*/
926 /* --- @a_svcfind@ --- *
928 * Arguments: @admin *a@ = the requesting client
929 * @const char *name@ = service name wanted
931 * Returns: The service requested, or null.
933 * Use: Finds a service; reports an error if the service couldn't be
937 static admin_service
*a_svcfind(admin
*a
, const char *name
)
941 if ((svc
= sym_find(&a_svcs
, name
, -1, 0, 0)) == 0) {
942 a_fail(a
, "unknown-service", "%s", name
, A_END
);
948 /* --- @a_svcunlink@ --- *
950 * Arguments: @admin_service *svc@ = pointer to service structure
954 * Use: Unlinks the service from its provider, without issuing a
955 * message or freeing the structure. The version string is
959 static void a_svcunlink(admin_service
*svc
)
962 svc
->next
->prev
= svc
->prev
;
964 svc
->prev
->next
= svc
->next
;
966 svc
->prov
->svcs
= svc
->next
;
970 /* --- @a_svcrelease@ --- *
972 * Arguments: @admin_service *svc@ = pointer to service structure
976 * Use: Releases a service and frees its structure.
979 static void a_svcrelease(admin_service
*svc
)
981 a_notify("SVCRELEASE", "%s", SYM_NAME(svc
), A_END
);
983 sym_remove(&a_svcs
, svc
);
986 /*----- Name resolution operations ----------------------------------------*/
988 /* --- @a_resolved@ --- *
990 * Arguments: @struct hostent *h@ = pointer to resolved hostname
991 * @void *v@ = pointer to resolver operation
995 * Use: Handles a completed name resolution.
998 static void a_resolved(struct hostent
*h
, void *v
)
1002 T( trace(T_ADMIN
, "admin: resop %s resolved", BGTAG(r
)); )
1005 a_bgfail(&r
->bg
, "resolve-error", "%s", r
->addr
, A_END
);
1006 r
->func(r
, ARES_FAIL
);
1008 memcpy(&r
->sa
.sin
.sin_addr
, h
->h_addr
, sizeof(struct in_addr
));
1009 r
->func(r
, ARES_OK
);
1013 a_bgrelease(&r
->bg
);
1016 /* --- @a_restimer@ --- *
1018 * Arguments: @struct timeval *tv@ = timer
1019 * @void *v@ = pointer to resolver operation
1023 * Use: Times out a resolver.
1026 static void a_restimer(struct timeval
*tv
, void *v
)
1030 T( trace(T_ADMIN
, "admin: resop %s timeout", BGTAG(r
)); )
1031 a_bgfail(&r
->bg
, "resolver-timeout", "%s", r
->addr
, A_END
);
1032 r
->func(r
, ARES_FAIL
);
1035 a_bgrelease(&r
->bg
);
1038 /* --- @a_rescancel@ --- *
1040 * Arguments: @admin_bgop *bg@ = background operation
1044 * Use: Cancels an add operation.
1047 static void a_rescancel(admin_bgop
*bg
)
1049 admin_resop
*r
= (admin_resop
*)bg
;
1051 T( trace(T_ADMIN
, "admin: cancel resop %s", BGTAG(r
)); )
1052 r
->func(r
, ARES_FAIL
);
1058 /* --- @a_resolve@ --- *
1060 * Arguments: @admin *a@ = administration connection
1061 * @admin_resop *r@ = resolver operation to run
1062 * @const char *tag@ = background operation tag
1063 * @void (*func)(struct admin_resop *, int@ = handler function
1064 * @unsigned ac@ = number of remaining arguments
1065 * @char *av[]@ = pointer to remaining arguments
1069 * Use: Cranks up a resolver job.
1072 static void a_resolve(admin
*a
, admin_resop
*r
, const char *tag
,
1073 void (*func
)(struct admin_resop
*, int),
1074 unsigned ac
, char *av
[])
1081 /* --- Fill in the easy bits of address --- */
1083 r
->bg
.tag
= "<starting>";
1086 if (mystrieq(av
[i
], "inet")) i
++;
1088 a_fail(a
, "bad-addr-syntax", "[inet] ADDRESS PORT", A_END
);
1091 r
->sa
.sin
.sin_family
= AF_INET
;
1092 r
->sasz
= sizeof(r
->sa
.sin
);
1093 r
->addr
= xstrdup(av
[i
]);
1094 pt
= strtoul(av
[i
+ 1], &p
, 0);
1096 struct servent
*s
= getservbyname(av
[i
+ 1], "udp");
1098 a_fail(a
, "unknown-service", "%s", av
[i
+ 1], A_END
);
1101 pt
= ntohs(s
->s_port
);
1103 if (pt
== 0 || pt
>= 65536) {
1104 a_fail(a
, "invalid-port", "%lu", pt
, A_END
);
1107 r
->sa
.sin
.sin_port
= htons(pt
);
1109 /* --- Report backgrounding --- *
1111 * Do this for consistency of interface, even if we're going to get the
1112 * answer straight away.
1115 if (a_bgadd(a
, &r
->bg
, tag
, a_rescancel
))
1117 T( trace(T_ADMIN
, "admin: %u, resop %s, hostname `%s'",
1118 a
->seq
, BGTAG(r
), r
->addr
); )
1120 /* --- If the name is numeric, do it the easy way --- */
1122 if (inet_aton(av
[i
], &r
->sa
.sin
.sin_addr
)) {
1123 T( trace(T_ADMIN
, "admin: resop %s done the easy way", BGTAG(r
)); )
1126 a_bgrelease(&r
->bg
);
1130 /* --- Store everything for later and crank up the resolver --- */
1132 gettimeofday(&tv
, 0);
1133 tv
.tv_sec
+= T_RESOLVE
;
1134 sel_addtimer(&sel
, &r
->t
, &tv
, a_restimer
, r
);
1135 bres_byname(&r
->r
, r
->addr
, a_resolved
, r
);
1140 if (r
->addr
) xfree(r
->addr
);
1144 /*----- Option parsing ----------------------------------------------------*/
1146 #define OPTIONS(argc, argv, guts) do { \
1147 char **o_av = argv; \
1151 if (mystrieq(*o_av, "--")) { \
1156 if (**o_av == '-') \
1160 argc -= o_av - argv; \
1164 #define OPT(name, guts) if (mystrieq(*o_av, name)) { guts continue; }
1166 #define OPTARG(name, arg, guts) OPT(name, { \
1169 if (!arg) goto bad_syntax; \
1173 #define OPTTIME(name, arg, guts) OPTARG(name, o_arg, { \
1175 if ((arg = a_parsetime(o_arg)) < 0) { \
1176 a_fail(a, "bad-time-spec", "%s", o_arg, A_END); \
1182 /*----- Adding peers ------------------------------------------------------*/
1184 /* --- @a_doadd@ --- *
1186 * Arguments: @admin_resop *r@ = resolver operation
1187 * @int rc@ = how it worked
1191 * Use: Handles a completed resolution.
1194 static void a_doadd(admin_resop
*r
, int rc
)
1196 admin_addop
*add
= (admin_addop
*)r
;
1198 T( trace(T_ADMIN
, "admin: done add op %s", BGTAG(add
)); )
1200 if (rc
== ARES_OK
) {
1201 add
->peer
.sasz
= add
->r
.sasz
;
1202 add
->peer
.sa
= add
->r
.sa
;
1203 if (p_find(add
->peer
.name
))
1204 a_bgfail(&add
->r
.bg
, "peer-exists", "%s", add
->peer
.name
, A_END
);
1205 else if (!p_create(&add
->peer
))
1206 a_bgfail(&add
->r
.bg
, "peer-create-fail", "%s", add
->peer
.name
, A_END
);
1211 xfree(add
->peer
.name
);
1214 /* --- @acmd_add@ --- *
1216 * Arguments: @admin *a@ = connection which requested the addition
1217 * @unsigned ac@ = argument count
1218 * @char *av[]@ = pointer to the argument list
1222 * Use: Adds a new peer.
1225 static void acmd_add(admin
*a
, unsigned ac
, char *av
[])
1227 const char *tag
= 0;
1230 /* --- Set stuff up --- */
1232 add
= xmalloc(sizeof(*add
));
1235 add
->peer
.tops
= tun_default
;
1237 /* --- Parse options --- */
1240 OPTARG("-background", arg
, { tag
= arg
; })
1241 OPTARG("-tunnel", arg
, {
1245 a_fail(a
, "unknown-tunnel", "%s", arg
, A_END
);
1248 if (mystrieq(arg
, tunnels
[i
]->name
)) {
1249 add
->peer
.tops
= tunnels
[i
];
1254 OPTTIME("-keepalive", t
, { add
->peer
.t_ka
= t
; })
1257 /* --- Make sure someone's not got there already --- */
1262 a_fail(a
, "peer-exists", "%s", *av
, A_END
);
1265 add
->peer
.name
= xstrdup(*av
++);
1268 /* --- Crank up the resolver --- */
1270 a_resolve(a
, &add
->r
, tag
, a_doadd
, ac
, av
);
1273 /* --- Clearing up --- */
1276 a_fail(a
, "bad-syntax", "add", "[OPTIONS] PEER ADDR ...", A_END
);
1278 if (add
->peer
.name
) xfree(add
->peer
.name
);
1283 /*----- Ping --------------------------------------------------------------*/
1285 /* --- @a_pingcancel@ --- *
1287 * Arguments: @admin_bgop *bg@ = background operation block
1291 * Use: Cancels a running ping.
1294 static void a_pingcancel(admin_bgop
*bg
)
1296 admin_pingop
*pg
= (admin_pingop
*)bg
;
1297 T( trace(T_ADMIN
, "admin: cancel ping op %s", BGTAG(pg
)); )
1298 p_pingdone(&pg
->ping
, PING_NONOTIFY
);
1301 /* --- @a_pong@ --- *
1303 * Arguments: @int rc@ = return code
1304 * @void *v@ = ping operation block
1308 * Use: Collects what happened to a ping message.
1311 static void a_pong(int rc
, void *v
)
1313 admin_pingop
*pg
= v
;
1319 gettimeofday(&tv
, 0);
1320 tv_sub(&tv
, &tv
, &pg
->pingtime
);
1321 millis
= (double)tv
.tv_sec
* 1000 + (double)tv
.tv_usec
/1000;
1322 a_bginfo(&pg
->bg
, "ping-ok", "%.1f", millis
, A_END
);
1326 a_bginfo(&pg
->bg
, "ping-timeout", A_END
);
1330 a_bginfo(&pg
->bg
, "ping-peer-died", A_END
);
1336 T( trace(T_ADMIN
, "admin: ponged ping op %s", BGTAG(pg
)); )
1337 a_bgrelease(&pg
->bg
);
1340 /* --- @acmd_ping@, @acmd_eping@ --- *
1342 * Arguments: @admin *a@ = connection which requested the ping
1343 * @unsigned ac@ = argument count
1344 * @char *av[]@ = pointer to the argument list
1348 * Use: Pings a peer.
1351 static void a_ping(admin
*a
, unsigned ac
, char *av
[],
1352 const char *cmd
, unsigned msg
)
1356 admin_pingop
*pg
= 0;
1357 const char *tag
= 0;
1360 OPTARG("-background", arg
, { tag
= arg
; })
1361 OPTTIME("-timeout", arg
, { t
= arg
; })
1363 if (!*av
|| av
[1]) goto bad_syntax
;
1364 if ((p
= a_findpeer(a
, *av
)) == 0)
1366 pg
= xmalloc(sizeof(*pg
));
1367 gettimeofday(&pg
->pingtime
, 0);
1368 if (a_bgadd(a
, &pg
->bg
, tag
, a_pingcancel
))
1370 T( trace(T_ADMIN
, "admin: ping op %s: %s to %s",
1371 BGTAG(pg
), cmd
, p_name(p
)); )
1372 if (p_pingsend(p
, &pg
->ping
, msg
, t
, a_pong
, pg
)) {
1373 a_bgfail(&pg
->bg
, "ping-send-failed", A_END
);
1374 a_bgrelease(&pg
->bg
);
1379 a_fail(a
, "bad-syntax", "%s", cmd
, "[OPTIONS] PEER", cmd
, A_END
);
1385 static void acmd_ping(admin
*a
, unsigned ac
, char *av
[])
1386 { a_ping(a
, ac
, av
, "ping", MISC_PING
); }
1387 static void acmd_eping(admin
*a
, unsigned ac
, char *av
[])
1388 { a_ping(a
, ac
, av
, "eping", MISC_EPING
); }
1390 /*----- Service commands --------------------------------------------------*/
1392 static void acmd_svcclaim(admin
*a
, unsigned ac
, char *av
[])
1397 svc
= sym_find(&a_svcs
, av
[0], -1, sizeof(*svc
), &f
);
1399 if (versioncmp(av
[1], svc
->version
) <= 0) {
1402 "%s", SYM_NAME(svc
),
1407 a_write(svc
->prov
, "SVCCLAIM", 0, "%s", av
[0], "%s", av
[1], A_END
);
1411 svc
->version
= xstrdup(av
[1]);
1412 svc
->next
= a
->svcs
;
1414 if (a
->svcs
) a
->svcs
->prev
= svc
;
1416 a_notify("SVCCLAIM", "%s", SYM_NAME(svc
), "%s", svc
->version
, A_END
);
1420 static void acmd_svcrelease(admin
*a
, unsigned ac
, char *av
[])
1424 if ((svc
= a_svcfind(a
, av
[0])) == 0)
1426 if (svc
->prov
!= a
) {
1427 a_fail(a
, "not-service-provider", "%s", SYM_NAME(svc
), A_END
);
1434 static void acmd_svcensure(admin
*a
, unsigned ac
, char *av
[])
1438 if ((svc
= a_svcfind(a
, av
[0])) == 0)
1440 if (av
[1] && versioncmp(svc
->version
, av
[1]) < 0) {
1441 a_fail(a
, "service-too-old",
1442 "%s", SYM_NAME(svc
),
1450 static void acmd_svcquery(admin
*a
, unsigned ac
, char *av
[])
1454 if ((svc
= a_svcfind(a
, av
[0])) != 0) {
1455 a_info(a
, "name=%s", SYM_NAME(svc
), "version=%s", svc
->version
, A_END
);
1460 static void acmd_svclist(admin
*a
, unsigned ac
, char *av
[])
1465 for (sym_mkiter(&i
, &a_svcs
); (svc
= sym_next(&i
)) != 0; )
1466 a_info(a
, "%s", SYM_NAME(svc
), "%s", svc
->version
, A_END
);
1470 /*----- Administration commands -------------------------------------------*/
1472 /* --- Miscellaneous commands --- */
1474 /* --- @traceish@ --- *
1476 * Arguments: @admin *a@ = connection to complain on
1477 * @unsigned ac@ = number of arguments
1478 * @char *av[]@ = vector of arguments
1479 * @const char *what@ = what we're messing with
1480 * @const trace_opt *tt@ = options table
1481 * @unsigned *ff@ = where the flags are
1483 * Returns: Nonzero if anything changed.
1485 * Use: Guts of trace-ish commands like `trace' and `watch'.
1488 static int traceish(admin
*a
, unsigned ac
, char *av
[],
1489 const char *what
, const trace_opt
*tt
, unsigned *ff
)
1493 if (!ac
|| strcmp(av
[0], "?") == 0) {
1495 for (t
= tt
; t
->ch
; t
++) {
1496 a_info(a
, "*%c%c %s",
1497 t
->ch
, (*ff
& t
->f
) == t
->f ?
'+' : ' ', t
->help
, A_END
);
1507 case '+': sense
= 1; break;
1508 case '-': sense
= 0; break;
1510 for (t
= tt
; t
->ch
; t
++) {
1512 if (sense
) f
|= t
->f
;
1517 a_fail(a
, "bad-%s-option", what
, "%c", *p
, A_END
);
1533 static void acmd_trace(admin
*a
, unsigned ac
, char *av
[])
1535 if (traceish(a
, ac
, av
, "trace", tr_opts
, &tr_flags
))
1536 trace_level(tr_flags
);
1541 static void acmd_watch(admin
*a
, unsigned ac
, char *av
[])
1543 traceish(a
, ac
, av
, "watch", w_opts
, &a
->f
);
1546 static void alertcmd(admin
*a
, unsigned f_and
, unsigned f_eq
,
1547 const char *status
, char *av
[])
1548 { a_alert(f_and
, f_eq
, status
, "USER", "?TOKENS", av
, A_END
); a_ok(a
); }
1549 static void acmd_notify(admin
*a
, unsigned ac
, char *av
[])
1550 { alertcmd(a
, AF_NOTE
, AF_NOTE
, "NOTE", av
); }
1551 static void acmd_warn(admin
*a
, unsigned ac
, char *av
[])
1552 { alertcmd(a
, AF_WARN
, AF_WARN
, "WARN", av
); }
1554 static void acmd_port(admin
*a
, unsigned ac
, char *av
[])
1556 a_info(a
, "%u", p_port(), A_END
);
1560 static void acmd_daemon(admin
*a
, unsigned ac
, char *av
[])
1562 if (flags
& F_DAEMON
)
1563 a_fail(a
, "already-daemon", A_END
);
1565 a_notify("DAEMON", A_END
);
1569 a_fail(a
, "daemon-error", "?ERRNO", A_END
);
1577 static void acmd_jobs(admin
*a
, unsigned ac
, char *av
[])
1581 for (bg
= a
->bg
; bg
; bg
= bg
->next
) {
1583 a_info(a
, "%s", bg
->tag
, A_END
);
1588 static void acmd_bgcancel(admin
*a
, unsigned ac
, char *av
[])
1592 if ((bg
= a_bgfind(a
, av
[0])) == 0)
1593 a_fail(a
, "unknown-tag", "%s", av
[0], A_END
);
1601 static void acmd_list(admin
*a
, unsigned ac
, char *av
[])
1604 for (p
= p_first(); p
; p
= p_next(p
))
1605 a_info(a
, "%s", p_name(p
), A_END
);
1609 static void acmd_ifname(admin
*a
, unsigned ac
, char *av
[])
1613 if ((p
= a_findpeer(a
, av
[0])) != 0) {
1614 a_info(a
, "%s", p_ifname(p
), A_END
);
1619 static void acmd_setifname(admin
*a
, unsigned ac
, char *av
[])
1623 if ((p
= a_findpeer(a
, av
[0])) != 0) {
1624 a_notify("NEWIFNAME", "?PEER", p
, "%s", p_ifname(p
), "%s", av
[1], A_END
);
1625 p_setifname(p
, av
[1]);
1630 static void acmd_getchal(admin
*a
, unsigned ac
, char *av
[])
1634 buf_init(&b
, buf_i
, PKBUFSZ
);
1636 a_info(a
, "?B64", BBASE(&b
), (size_t)BLEN(&b
), A_END
);
1640 static void acmd_checkchal(admin
*a
, unsigned ac
, char *av
[])
1647 base64_decode(&b64
, av
[0], strlen(av
[0]), &d
);
1648 base64_decode(&b64
, 0, 0, &d
);
1649 buf_init(&b
, d
.buf
, d
.len
);
1650 if (c_check(&b
) || BBAD(&b
) || BLEFT(&b
))
1651 a_fail(a
, "invalid-challenge", A_END
);
1657 static void acmd_greet(admin
*a
, unsigned ac
, char *av
[])
1663 if ((p
= a_findpeer(a
, av
[0])) != 0) {
1665 base64_decode(&b64
, av
[1], strlen(av
[1]), &d
);
1666 base64_decode(&b64
, 0, 0, &d
);
1667 p_greet(p
, d
.buf
, d
.len
);
1673 static void acmd_addr(admin
*a
, unsigned ac
, char *av
[])
1678 if ((p
= a_findpeer(a
, av
[0])) != 0) {
1680 assert(ad
->sa
.sa_family
== AF_INET
);
1681 a_info(a
, "?ADDR", ad
, A_END
);
1686 static void acmd_peerinfo(admin
*a
, unsigned ac
, char *av
[])
1691 if ((p
= a_findpeer(a
, av
[0])) != 0) {
1693 a_info(a
, "tunnel=%s", ps
->tops
->name
, A_END
);
1694 a_info(a
, "keepalive=%lu", ps
->t_ka
, A_END
);
1699 static void acmd_servinfo(admin
*a
, unsigned ac
, char *av
[])
1701 a_info(a
, "implementation=edgeware-tripe", A_END
);
1702 a_info(a
, "version=%s", VERSION
, A_END
);
1703 a_info(a
, "daemon=%s", BOOL(flags
& F_DAEMON
), A_END
);
1707 static void acmd_stats(admin
*a
, unsigned ac
, char *av
[])
1712 if ((p
= a_findpeer(a
, av
[0])) == 0)
1716 a_info(a
, "start-time=%s", timestr(st
->t_start
), A_END
);
1717 a_info(a
, "last-packet-time=%s", timestr(st
->t_last
), A_END
);
1718 a_info(a
, "last-keyexch-time=%s", timestr(st
->t_kx
), A_END
);
1719 a_info(a
, "packets-in=%lu bytes-in=%lu", st
->n_in
, st
->sz_in
, A_END
);
1720 a_info(a
, "packets-out=%lu bytes-out=%lu",
1721 st
->n_out
, st
->sz_out
, A_END
);
1722 a_info(a
, "keyexch-packets-in=%lu keyexch-bytes-in=%lu",
1723 st
->n_kxin
, st
->sz_kxin
, A_END
);
1724 a_info(a
, "keyexch-packets-out=%lu keyexch-bytes-out=%lu",
1725 st
->n_kxout
, st
->sz_kxout
, A_END
);
1726 a_info(a
, "ip-packets-in=%lu ip-bytes-in=%lu",
1727 st
->n_ipin
, st
->sz_ipin
, A_END
);
1728 a_info(a
, "ip-packets-out=%lu ip-bytes-out=%lu",
1729 st
->n_ipout
, st
->sz_ipout
, A_END
);
1730 a_info(a
, "rejected-packets=%lu", st
->n_reject
, A_END
);
1734 static void acmd_kill(admin
*a
, unsigned ac
, char *av
[])
1737 if ((p
= a_findpeer(a
, av
[0])) != 0) {
1743 static void acmd_forcekx(admin
*a
, unsigned ac
, char *av
[])
1746 if ((p
= a_findpeer(a
, av
[0])) != 0) {
1747 kx_start(&p
->kx
, 1);
1752 static void acmd_reload(admin
*a
, unsigned ac
, char *av
[])
1753 { p_keyreload(); a_ok(a
); }
1755 static void acmd_quit(admin
*a
, unsigned ac
, char *av
[])
1757 a_warn("SERVER", "quit", "admin-request", A_END
);
1762 static void acmd_version(admin
*a
, unsigned ac
, char *av
[])
1764 a_info(a
, "%s", PACKAGE
, "%s", VERSION
, A_END
);
1768 static void acmd_tunnels(admin
*a
, unsigned ac
, char *av
[])
1771 for (i
= 0; tunnels
[i
]; i
++)
1772 a_info(a
, "%s", tunnels
[i
]->name
, A_END
);
1776 /* --- The command table and help --- */
1778 typedef struct acmd
{
1781 unsigned argmin
, argmax
;
1782 void (*func
)(admin */
*a*/
, unsigned /*ac*/, char */
*av*/
[]);
1785 static void acmd_help(admin */
*a*/
, unsigned /*ac*/, char */
*av*/
[]);
1787 static const acmd acmdtab
[] = {
1788 { "add", "[OPTIONS] PEER ADDR ...", 2, 0xffff, acmd_add
},
1789 { "addr", "PEER", 1, 1, acmd_addr
},
1790 { "bgcancel", "TAG", 1, 1, acmd_bgcancel
},
1791 { "checkchal", "CHAL", 1, 1, acmd_checkchal
},
1792 { "daemon", 0, 0, 0, acmd_daemon
},
1793 { "eping", "[OPTIONS] PEER", 1, 0xffff, acmd_eping
},
1794 { "forcekx", "PEER", 1, 1, acmd_forcekx
},
1795 { "getchal", 0, 0, 0, acmd_getchal
},
1796 { "greet", "PEER CHAL", 2, 2, acmd_greet
},
1797 { "help", 0, 0, 0, acmd_help
},
1798 { "ifname", "PEER", 1, 1, acmd_ifname
},
1799 { "jobs", 0, 0, 0, acmd_jobs
},
1800 { "kill", "PEER", 1, 1, acmd_kill
},
1801 { "list", 0, 0, 0, acmd_list
},
1802 { "notify", "MESSAGE ...", 1, 0xffff, acmd_notify
},
1803 { "peerinfo", "PEER", 1, 1, acmd_peerinfo
},
1804 { "ping", "[OPTIONS] PEER", 1, 0xffff, acmd_ping
},
1805 { "port", 0, 0, 0, acmd_port
},
1806 { "quit", 0, 0, 0, acmd_quit
},
1807 { "reload", 0, 0, 0, acmd_reload
},
1808 { "servinfo", 0, 0, 0, acmd_servinfo
},
1809 { "setifname", "PEER NEW-NAME", 2, 2, acmd_setifname
},
1810 { "svcclaim", "SERVICE VERSION", 2, 2, acmd_svcclaim
},
1811 { "svcensure", "SERVICE [VERSION]", 1, 2, acmd_svcensure
},
1812 { "svclist", 0, 0, 0, acmd_svclist
},
1813 { "svcquery", "SERVICE", 1, 1, acmd_svcquery
},
1814 { "svcrelease", "SERVICE", 1, 1, acmd_svcrelease
},
1815 { "stats", "PEER", 1, 1, acmd_stats
},
1817 { "trace", "[OPTIONS]", 0, 1, acmd_trace
},
1819 { "tunnels", 0, 0, 0, acmd_tunnels
},
1820 { "version", 0, 0, 0, acmd_version
},
1821 { "warn", "MESSAGE ...", 1, 0xffff, acmd_warn
},
1822 { "watch", "[OPTIONS]", 0, 1, acmd_watch
},
1826 static void acmd_help(admin
*a
, unsigned ac
, char *av
[])
1829 for (c
= acmdtab
; c
->name
; c
++) {
1831 a_info(a
, "%s", c
->name
, "*%s", c
->help
, A_END
);
1833 a_info(a
, "%s", c
->name
, A_END
);
1838 /*----- Connection handling -----------------------------------------------*/
1840 /* --- @a_destroypending@ --- *
1846 * Use: Destroys pending admin connections at a safe time.
1849 static void a_destroypending(void)
1852 admin_bgop
*bg
, *bbg
;
1853 admin_service
*svc
, *ssvc
;
1855 /* --- Destroy connections marked as pending --- */
1857 for (a
= a_dead
; a
; a
= aa
) {
1859 assert(a
->f
& AF_DEAD
);
1861 /* --- Report what we're doing --- */
1863 T( trace(T_ADMIN
, "admin: completing destruction of connection %u",
1866 /* --- Abort any background jobs in progress --- */
1868 for (bg
= a
->bg
; bg
; bg
= bbg
) {
1871 if (bg
->tag
) xfree(bg
->tag
);
1875 /* --- Release services I hold, and abort pending jobs --- */
1877 for (svc
= a
->svcs
; svc
; svc
= ssvc
) {
1881 a_jobtablefinal(&a
->j
);
1883 /* --- Close file descriptors and selectory --- */
1885 selbuf_destroy(&a
->b
);
1886 if (a
->b
.reader
.fd
!= a
->w
.fd
) close(a
->b
.reader
.fd
);
1888 if (a_stdin
== a
) a_stdin
= 0;
1895 /* --- All pending destruction completed --- */
1900 /* --- @a_destroy@ --- *
1902 * Arguments: @admin *a@ = pointer to an admin block
1906 * Use: Destroys an admin block. This requires a certain amount of
1910 static void freequeue(oqueue
*q
)
1914 for (o
= q
->hd
; o
; o
= oo
) {
1921 static void a_destroy(admin
*a
)
1926 if (a
->next
) a
->next
->prev
= a
->prev
;
1927 if (a
->prev
) a
->prev
->next
= a
->next
;
1928 else admins
= a
->next
;
1930 if (a
->out
.hd
) sel_rmfile(&a
->w
);
1937 T( trace(T_ADMIN
, "admin: killing connection %u", a
->seq
); )
1940 /* --- @a_line@ --- *
1942 * Arguments: @char *p@ = pointer to the line read
1943 * @size_t len@ = length of the line
1944 * @void *vp@ = pointer to my admin block
1948 * Use: Handles a line of input.
1951 static void a_line(char *p
, size_t len
, void *vp
)
1966 selbuf_disable(&a
->b
);
1970 ac
= str_qsplit(p
, av
, 16, 0, STRF_QUOTE
);
1973 for (c
= acmdtab
; c
->name
; c
++) {
1974 if (mystrieq(av
[0], c
->name
)) {
1976 if (c
->argmin
> ac
|| ac
> c
->argmax
) {
1978 a_fail(a
, "bad-syntax", "%s", c
->name
, "", A_END
);
1980 a_fail(a
, "bad-syntax", "%s", c
->name
, "%s", c
->help
, A_END
);
1982 c
->func(a
, ac
, av
+ 1);
1986 a_fail(a
, "unknown-command", "%s", av
[0], A_END
);
1989 /* --- @a_create@ --- *
1991 * Arguments: @int fd_in, fd_out@ = file descriptors to use
1992 * @unsigned f@ = initial flags to set
1996 * Use: Creates a new admin connection.
1999 void a_create(int fd_in
, int fd_out
, unsigned f
)
2001 admin
*a
= CREATE(admin
);
2003 T( static unsigned seq
= 0;
2005 T( trace(T_ADMIN
, "admin: accepted connection %u", a
->seq
); )
2009 a_jobtableinit(&a
->j
);
2011 if (fd_in
== STDIN_FILENO
) a_stdin
= a
;
2012 fdflags(fd_in
, O_NONBLOCK
, O_NONBLOCK
, FD_CLOEXEC
, FD_CLOEXEC
);
2013 if (fd_out
!= fd_in
)
2014 fdflags(fd_out
, O_NONBLOCK
, O_NONBLOCK
, FD_CLOEXEC
, FD_CLOEXEC
);
2015 selbuf_init(&a
->b
, &sel
, fd_in
, a_line
, a
);
2016 sel_initfile(&sel
, &a
->w
, fd_out
, SEL_WRITE
, a_flush
, a
);
2017 a
->out
.hd
= a
->out
.tl
= 0;
2020 if (admins
) admins
->prev
= a
;
2024 /* --- @a_accept@ --- *
2026 * Arguments: @int fd@ = file descriptor to accept
2027 * @unsigned mode@ = what to do
2028 * @void *v@ = uninteresting pointer
2032 * Use: Accepts a new admin connection.
2035 static void a_accept(int fd
, unsigned mode
, void *v
)
2038 struct sockaddr_un sun
;
2039 size_t sz
= sizeof(sun
);
2041 if ((nfd
= accept(fd
, (struct sockaddr
*)&sun
, &sz
)) < 0) {
2042 if (errno
!= EINTR
&& errno
!= EAGAIN
&& errno
!= EWOULDBLOCK
&&
2043 errno
!= ECONNABORTED
&& errno
!= EPROTO
)
2044 a_warn("ADMIN", "accept-error", "?ERRNO", A_END
);
2047 a_create(nfd
, nfd
, 0);
2050 /* --- @a_preselect@ --- *
2056 * Use: Informs the admin module that we're about to select again,
2057 * and that it should do cleanup things it has delayed until a
2061 void a_preselect(void) { if (a_dead
) a_destroypending(); }
2063 /* --- @a_daemon@ --- *
2069 * Use: Informs the admin module that it's a daemon.
2077 /* --- @a_init@ --- *
2079 * Arguments: @const char *name@ = socket name to create
2083 * Use: Creates the admin listening socket.
2086 void a_init(const char *name
)
2090 struct sockaddr_un sun
;
2091 struct sigaction sa
;
2094 /* --- Create services table --- */
2096 sym_create(&a_svcs
);
2098 /* --- Set up the socket address --- */
2100 sz
= strlen(name
) + 1;
2101 if (sz
> sizeof(sun
.sun_path
))
2102 die(EXIT_FAILURE
, "socket name `%s' too long", name
);
2104 sun
.sun_family
= AF_UNIX
;
2105 memcpy(sun
.sun_path
, name
, sz
);
2106 sz
+= offsetof(struct sockaddr_un
, sun_path
);
2108 /* --- Attempt to bind to the socket --- */
2112 if ((fd
= socket(PF_UNIX
, SOCK_STREAM
, 0)) < 0)
2113 die(EXIT_FAILURE
, "couldn't create socket: %s", strerror(errno
));
2114 if (bind(fd
, (struct sockaddr
*)&sun
, sz
) < 0) {
2117 if (errno
!= EADDRINUSE
) {
2118 die(EXIT_FAILURE
, "couldn't bind to address `%s': %s",
2119 sun
.sun_path
, strerror(e
));
2122 die(EXIT_FAILURE
, "too many retries; giving up");
2124 if (!connect(fd
, (struct sockaddr
*)&sun
, sz
)) {
2125 die(EXIT_FAILURE
, "server already listening on admin socket `%s'",
2128 if (errno
!= ECONNREFUSED
)
2129 die(EXIT_FAILURE
, "couldn't bind to address: %s", strerror(e
));
2130 if (stat(sun
.sun_path
, &st
)) {
2131 die(EXIT_FAILURE
, "couldn't stat `%s': %s",
2132 sun
.sun_path
, strerror(errno
));
2134 if (!S_ISSOCK(st
.st_mode
))
2135 die(EXIT_FAILURE
, "object `%s' isn't a socket", sun
.sun_path
);
2136 T( trace(T_ADMIN
, "admin: stale socket found; removing it"); )
2137 unlink(sun
.sun_path
);
2141 chmod(sun
.sun_path
, 0600);
2142 fdflags(fd
, O_NONBLOCK
, O_NONBLOCK
, FD_CLOEXEC
, FD_CLOEXEC
);
2144 die(EXIT_FAILURE
, "couldn't listen on socket: %s", strerror(errno
));
2146 /* --- Listen to the socket --- */
2148 sel_initfile(&sel
, &sock
, fd
, SEL_READ
, a_accept
, 0);
2152 T( trace_custom(a_trace
, 0);
2153 trace(T_ADMIN
, "admin: enabled custom tracing"); )
2156 /* --- Set up signal handlers --- */
2158 sig_add(&s_term
, SIGTERM
, a_sigdie
, 0);
2159 sig_add(&s_hup
, SIGHUP
, a_sighup
, 0);
2160 signal(SIGPIPE
, SIG_IGN
);
2161 sigaction(SIGINT
, 0, &sa
);
2162 if (sa
.sa_handler
!= SIG_IGN
)
2163 sig_add(&s_int
, SIGINT
, a_sigdie
, 0);
2166 /*----- That's all, folks -------------------------------------------------*/