1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org>
5 * Copyright (c) 2008 Bjoern A. Zeeb <bz@FreeBSD.org>
6 * Copyright (c) 2009 James Gritton <jamie@FreeBSD.org>
7 * Copyright (c) 2015 Emmanuel Vadot <manu@bocal.org>
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/param.h>
33 #include <sys/jail.h>
34 #include <sys/socket.h>
35 #include <sys/sysctl.h>
36
37 #include <arpa/inet.h>
38 #include <netinet/in.h>
39
40 #include <assert.h>
41 #include <ctype.h>
42 #include <errno.h>
43 #include <jail.h>
44 #include <limits.h>
45 #include <stdio.h>
46 #include <stdlib.h>
47 #include <string.h>
48 #include <unistd.h>
49 #include <libxo/xo.h>
50
51 #define JP_USER 0x01000000
52 #define JP_OPT 0x02000000
53
54 #define JLS_XO_VERSION "2"
55
56 #define PRINT_DEFAULT 0x01
57 #define PRINT_HEADER 0x02
58 #define PRINT_NAMEVAL 0x04
59 #define PRINT_QUOTED 0x08
60 #define PRINT_SKIP 0x10
61 #define PRINT_VERBOSE 0x20
62 #define PRINT_JAIL_NAME 0x40
63 #define PRINT_EXISTS 0x80
64
65 static struct jailparam *params;
66 static int *param_parent;
67 static int nparams;
68 #ifdef INET6
69 static int ip6_ok;
70 #endif
71 #ifdef INET
72 static int ip4_ok;
73 #endif
74
75 static int add_param(const char *name, void *value, size_t valuelen,
76 struct jailparam *source, unsigned flags);
77 static int sort_param(const void *a, const void *b);
78 static char *noname(const char *name);
79 static char *nononame(const char *name);
80 static int print_jail(int pflags, int jflags);
81 static int special_print(int pflags, struct jailparam *param);
82 static void quoted_print(int pflags, char *name, char *value);
83 static void emit_ip_addr_list(int af_family, const char *list_name,
84 struct jailparam *param);
85
86 static void
usage(void)87 usage(void)
88 {
89 xo_errx(1,
90 "usage: jls [-dhNnqv] [-j jail] [param ...]\n"
91 " jls -c [-d] -j jail");
92 }
93
94 int
main(int argc,char ** argv)95 main(int argc, char **argv)
96 {
97 char *dot, *ep, *jname, *pname;
98 int c, i, jflags, jid, lastjid, pflags, spc;
99
100 argc = xo_parse_args(argc, argv);
101 if (argc < 0)
102 exit(1);
103
104 xo_set_version(JLS_XO_VERSION);
105 jname = NULL;
106 pflags = jflags = jid = 0;
107 while ((c = getopt(argc, argv, "acdj:hNnqsv")) >= 0)
108 switch (c) {
109 case 'a':
110 case 'd':
111 jflags |= JAIL_DYING;
112 break;
113 case 'c':
114 pflags |= PRINT_EXISTS;
115 break;
116 case 'j':
117 jid = strtoul(optarg, &ep, 10);
118 if (!jid || *ep) {
119 jid = 0;
120 jname = optarg;
121 }
122 break;
123 case 'h':
124 pflags = (pflags & ~(PRINT_SKIP | PRINT_VERBOSE)) |
125 PRINT_HEADER;
126 break;
127 case 'N':
128 pflags |= PRINT_JAIL_NAME;
129 break;
130 case 'n':
131 pflags = (pflags & ~PRINT_VERBOSE) | PRINT_NAMEVAL;
132 break;
133 case 'q':
134 pflags |= PRINT_QUOTED;
135 break;
136 case 's':
137 pflags = (pflags & ~(PRINT_HEADER | PRINT_VERBOSE)) |
138 PRINT_NAMEVAL | PRINT_QUOTED | PRINT_SKIP;
139 break;
140 case 'v':
141 pflags = (pflags &
142 ~(PRINT_HEADER | PRINT_NAMEVAL | PRINT_SKIP)) |
143 PRINT_VERBOSE;
144 break;
145 default:
146 usage();
147 }
148
149 #ifdef INET6
150 ip6_ok = feature_present("inet6");
151 #endif
152 #ifdef INET
153 ip4_ok = feature_present("inet");
154 #endif
155
156 argc -= optind;
157 argv += optind;
158
159 /* Add the parameters to print. */
160 if ((pflags & PRINT_EXISTS) != 0) {
161 if ((pflags & ~PRINT_EXISTS) != 0) {
162 xo_warnx("-c is incompatible with other print options");
163 usage();
164 } else if (argc != 0) {
165 xo_warnx("-c does not accept non-option arguments");
166 usage();
167 } else if (jid == 0 && jname == NULL) {
168 xo_warnx("-j jail to check must be provided for -c");
169 usage();
170 }
171
172 /*
173 * Force libxo to be silent, as well -- we're only wanting our
174 * exit status.
175 */
176 xo_set_style(NULL, XO_STYLE_TEXT);
177 } else if (argc == 0) {
178 if (pflags & (PRINT_HEADER | PRINT_NAMEVAL))
179 add_param("all", NULL, (size_t)0, NULL, JP_USER);
180 else if (pflags & PRINT_VERBOSE) {
181 add_param(JAIL_PARAM_JID, NULL, (size_t)0, NULL,
182 JP_USER);
183 add_param(JAIL_PARAM_HOST_HOSTNAME, NULL, (size_t)0,
184 NULL, JP_USER);
185 add_param(JAIL_PARAM_PATH, NULL, (size_t)0, NULL,
186 JP_USER);
187 add_param(JAIL_PARAM_NAME, NULL, (size_t)0, NULL,
188 JP_USER);
189 add_param(JAIL_PARAM_DYING, NULL, (size_t)0, NULL,
190 JP_USER);
191 add_param(JAIL_PARAM_CPUSET_ID, NULL, (size_t)0, NULL,
192 JP_USER);
193 #ifdef INET
194 if (ip4_ok)
195 add_param(JAIL_PARAM_IP4_ADDR, NULL,
196 (size_t)0, NULL, JP_USER);
197 #endif
198 #ifdef INET6
199 if (ip6_ok)
200 add_param(JAIL_PARAM_IP6_ADDR, NULL,
201 (size_t)0, NULL, JP_USER | JP_OPT);
202 #endif
203 } else {
204 pflags |= PRINT_DEFAULT;
205 if (pflags & PRINT_JAIL_NAME)
206 add_param(JAIL_PARAM_NAME, NULL, (size_t)0,
207 NULL, JP_USER);
208 else
209 add_param(JAIL_PARAM_JID, NULL, (size_t)0,
210 NULL, JP_USER);
211 #ifdef INET
212 if (ip4_ok)
213 add_param(JAIL_PARAM_IP4_ADDR, NULL,
214 (size_t)0, NULL, JP_USER);
215 #endif
216 add_param(JAIL_PARAM_HOST_HOSTNAME, NULL, (size_t)0,
217 NULL, JP_USER);
218 add_param(JAIL_PARAM_PATH, NULL, (size_t)0, NULL,
219 JP_USER);
220 }
221 } else {
222 pflags &= ~PRINT_VERBOSE;
223 for (i = 0; i < argc; i++)
224 add_param(argv[i], NULL, (size_t)0, NULL, JP_USER);
225 }
226
227 if (pflags & PRINT_SKIP) {
228 /* Check for parameters with jailsys parents. */
229 for (i = 0; i < nparams; i++) {
230 if ((params[i].jp_flags & JP_USER) &&
231 (dot = strchr(params[i].jp_name, '.'))) {
232 pname = alloca((dot - params[i].jp_name) + 1);
233 strlcpy(pname, params[i].jp_name,
234 (dot - params[i].jp_name) + 1);
235 param_parent[i] = add_param(pname,
236 NULL, (size_t)0, NULL, JP_OPT);
237 }
238 }
239 }
240
241 /* Add the index key parameters. */
242 if (jid != 0)
243 add_param(JAIL_PARAM_JID, &jid, sizeof(jid), NULL, 0);
244 else if (jname != NULL)
245 add_param(JAIL_PARAM_NAME, jname, strlen(jname), NULL, 0);
246 else
247 add_param(JAIL_PARAM_LASTJID, &lastjid, sizeof(lastjid),
248 NULL, 0);
249
250 /* Print a header line if requested. */
251 if (pflags & PRINT_VERBOSE) {
252 xo_emit("{T:/%3s}{T:JID}{P: }{T:Hostname}{Pd:/%22s}{T:Path}\n",
253 "", "");
254 xo_emit("{P:/%8s}{T:Name}{Pd:/%26s}{T:State}\n", "", "");
255 xo_emit("{P:/%8s}{T:CPUSetID}\n", "");
256 xo_emit("{P:/%8s}{T:IP Address(es)}\n", "");
257 }
258 else if (pflags & PRINT_DEFAULT)
259 if (pflags & PRINT_JAIL_NAME)
260 xo_emit("{P: }{T:JID/%-15s}{P: }{T:IP Address/%-15s}"
261 "{P: }{T:Hostname/%-29s}{P: }{T:Path}\n");
262 else
263 xo_emit("{T:JID/%6s}{P: }{T:IP Address}{P:/%6s}"
264 "{T:Hostname}{P:/%22s}{T:Path}\n", "", "");
265 else if (pflags & PRINT_HEADER) {
266 for (i = spc = 0; i < nparams; i++)
267 if (params[i].jp_flags & JP_USER) {
268 if (spc)
269 xo_emit("{P: }");
270 else
271 spc = 1;
272 xo_emit(params[i].jp_name);
273 }
274 xo_emit("{P:\n}");
275 }
276
277 xo_open_container("jail-information");
278 xo_open_list("jail");
279 /* Fetch the jail(s) and print the parameters. */
280 if (jid != 0 || jname != NULL) {
281 if (print_jail(pflags, jflags) < 0) {
282 /*
283 * We omit errors from existential issues if we're just
284 * doing a -c check that the jail exists.
285 */
286 if (pflags & PRINT_EXISTS)
287 exit(1);
288 xo_errx(1, "%s", jail_errmsg);
289 }
290 } else {
291 assert((pflags & PRINT_EXISTS) == 0);
292 for (lastjid = 0;
293 (lastjid = print_jail(pflags, jflags)) >= 0; )
294 ;
295 if (errno != 0 && errno != ENOENT)
296 xo_errx(1, "%s", jail_errmsg);
297 }
298 xo_close_list("jail");
299 xo_close_container("jail-information");
300 if (xo_finish() < 0)
301 xo_err(1, "stdout");
302 exit(0);
303 }
304
305 static int
add_param(const char * name,void * value,size_t valuelen,struct jailparam * source,unsigned flags)306 add_param(const char *name, void *value, size_t valuelen,
307 struct jailparam *source, unsigned flags)
308 {
309 struct jailparam *param, *tparams;
310 int i, tnparams;
311
312 static int paramlistsize;
313
314 /* The pseudo-parameter "all" scans the list of available parameters. */
315 if (!strcmp(name, "all")) {
316 tnparams = jailparam_all(&tparams);
317 if (tnparams < 0)
318 xo_errx(1, "%s", jail_errmsg);
319 qsort(tparams, (size_t)tnparams, sizeof(struct jailparam),
320 sort_param);
321 for (i = 0; i < tnparams; i++)
322 add_param(tparams[i].jp_name, NULL, (size_t)0,
323 tparams + i, flags);
324 free(tparams);
325 return -1;
326 }
327
328 /* Check for repeat parameters. */
329 for (i = 0; i < nparams; i++)
330 if (!strcmp(name, params[i].jp_name)) {
331 if (value != NULL && jailparam_import_raw(params + i,
332 value, valuelen) < 0)
333 xo_errx(1, "%s", jail_errmsg);
334 params[i].jp_flags |= flags;
335 if (source != NULL)
336 jailparam_free(source, 1);
337 return i;
338 }
339
340 /* Make sure there is room for the new param record. */
341 if (!nparams) {
342 paramlistsize = 32;
343 params = malloc(paramlistsize * sizeof(*params));
344 param_parent = malloc(paramlistsize * sizeof(*param_parent));
345 if (params == NULL || param_parent == NULL)
346 xo_err(1, "malloc");
347 } else if (nparams >= paramlistsize) {
348 paramlistsize *= 2;
349 params = realloc(params, paramlistsize * sizeof(*params));
350 param_parent = realloc(param_parent,
351 paramlistsize * sizeof(*param_parent));
352 if (params == NULL || param_parent == NULL)
353 xo_err(1, "realloc");
354 }
355
356 /* Look up the parameter. */
357 param_parent[nparams] = -1;
358 param = params + nparams++;
359 if (source != NULL) {
360 *param = *source;
361 param->jp_flags |= flags;
362 return param - params;
363 }
364 if (jailparam_init(param, name) < 0 ||
365 (value != NULL ? jailparam_import_raw(param, value, valuelen)
366 : jailparam_import(param, value)) < 0) {
367 if (flags & JP_OPT) {
368 nparams--;
369 return (-1);
370 }
371 xo_errx(1, "%s", jail_errmsg);
372 }
373 param->jp_flags |= flags;
374 return param - params;
375 }
376
377 static int
sort_param(const void * a,const void * b)378 sort_param(const void *a, const void *b)
379 {
380 const struct jailparam *parama, *paramb;
381 char *ap, *bp;
382
383 /* Put top-level parameters first. */
384 parama = a;
385 paramb = b;
386 ap = strchr(parama->jp_name, '.');
387 bp = strchr(paramb->jp_name, '.');
388 if (ap && !bp)
389 return (1);
390 if (bp && !ap)
391 return (-1);
392 return (strcmp(parama->jp_name, paramb->jp_name));
393 }
394
395 static char *
noname(const char * name)396 noname(const char *name)
397 {
398 char *nname, *p;
399
400 nname = malloc(strlen(name) + 3);
401 if (nname == NULL)
402 xo_err(1, "malloc");
403 p = strrchr(name, '.');
404 if (p != NULL)
405 sprintf(nname, "%.*s.no%s", (int)(p - name), name, p + 1);
406 else
407 sprintf(nname, "no%s", name);
408 return nname;
409 }
410
411 static char *
nononame(const char * name)412 nononame(const char *name)
413 {
414 char *nname, *p;
415
416 p = strrchr(name, '.');
417 if (strncmp(p ? p + 1 : name, "no", 2))
418 return NULL;
419 nname = malloc(strlen(name) - 1);
420 if (nname == NULL)
421 xo_err(1, "malloc");
422 if (p != NULL)
423 sprintf(nname, "%.*s.%s", (int)(p - name), name, p + 3);
424 else
425 strcpy(nname, name + 2);
426 return nname;
427 }
428
429 static int
print_jail(int pflags,int jflags)430 print_jail(int pflags, int jflags)
431 {
432 char *nname, *xo_nname;
433 char **param_values;
434 int i, jid, spc;
435 #if (defined INET || defined INET6)
436 int n;
437 #endif
438
439 jid = jailparam_get(params, nparams, jflags);
440 if (jid < 0)
441 return jid;
442 else if (pflags & PRINT_EXISTS)
443 return 0;
444
445 xo_open_instance("jail");
446
447 if (pflags & PRINT_VERBOSE) {
448 xo_emit("{:jid/%6d}{P: }{:hostname/%-29.29s/%s}{P: }"
449 "{:path/%.74s/%s}\n",
450 *(int *)params[0].jp_value,
451 (char *)params[1].jp_value,
452 (char *)params[2].jp_value);
453 xo_emit("{P: }{:name/%-29.29s/%s}{P: }{:state/%.74s}\n",
454 (char *)params[3].jp_value,
455 *(int *)params[4].jp_value ? "DYING" : "ACTIVE");
456 xo_emit("{P: }{:cpusetid/%d}\n", *(int *)params[5].jp_value);
457 #if (defined INET || defined INET6)
458 n = 6;
459 #endif
460 #ifdef INET
461 if (ip4_ok && !strcmp(params[n].jp_name, JAIL_PARAM_IP4_ADDR)) {
462 emit_ip_addr_list(AF_INET, "ipv4_addrs", params + n);
463 n++;
464 }
465 #endif
466 #ifdef INET6
467 if (ip6_ok && !strcmp(params[n].jp_name, JAIL_PARAM_IP6_ADDR)) {
468 emit_ip_addr_list(AF_INET6, "ipv6_addrs", params + n);
469 n++;
470 }
471 #endif
472 } else if (pflags & PRINT_DEFAULT) {
473 if (pflags & PRINT_JAIL_NAME)
474 xo_emit("{P: }{:name/%-15s/%s}{P: }",
475 (char *)params[0].jp_value);
476 else
477 xo_emit("{:jid/%6d}{P: }", *(int *)params[0].jp_value);
478 xo_emit("{:ipv4/%-15.15s/%s}{P: }{:hostname/%-29.29s/%s}{P: }{:path/%.74s/%s}\n",
479 #ifdef INET
480 (!ip4_ok || params[1].jp_valuelen == 0) ? ""
481 : inet_ntoa(*(struct in_addr *)params[1].jp_value),
482 (char *)params[2-!ip4_ok].jp_value,
483 (char *)params[3-!ip4_ok].jp_value);
484 #else
485 "-",
486 (char *)params[1].jp_value,
487 (char *)params[2].jp_value);
488 #endif
489 } else {
490 param_values = alloca(nparams * sizeof(*param_values));
491 for (i = 0; i < nparams; i++) {
492 if (!(params[i].jp_flags & JP_USER))
493 continue;
494 param_values[i] = jailparam_export(params + i);
495 if (param_values[i] == NULL)
496 xo_errx(1, "%s", jail_errmsg);
497 }
498 for (i = spc = 0; i < nparams; i++) {
499 if (!(params[i].jp_flags & JP_USER))
500 continue;
501 if ((pflags & PRINT_SKIP) &&
502 !(params[i].jp_flags & JP_KEYVALUE) &&
503 ((!(params[i].jp_ctltype &
504 (CTLFLAG_WR | CTLFLAG_TUN))) ||
505 (param_parent[i] >= 0 &&
506 *(int *)params[param_parent[i]].jp_value !=
507 JAIL_SYS_NEW)))
508 continue;
509 if (spc)
510 xo_emit("{P: }");
511 else
512 spc = 1;
513 if ((params[i].jp_flags & JP_KEYVALUE) &&
514 params[i].jp_valuelen == 0) {
515 /* Communicate back a missing key. */
516 if (pflags & PRINT_NAMEVAL)
517 xo_emit("{d:%s}", params[i].jp_name);
518 continue;
519 }
520 if (pflags & PRINT_NAMEVAL) {
521 /*
522 * Generally "name=value", but for booleans
523 * either "name" or "noname".
524 */
525 if (params[i].jp_flags &
526 (JP_BOOL | JP_NOBOOL)) {
527 if (*(int *)params[i].jp_value) {
528 asprintf(&xo_nname, "{en:%s/true}", params[i].jp_name);
529 xo_emit(xo_nname);
530 xo_emit("{d:/%s}", params[i].jp_name);
531 }
532 else {
533 nname = (params[i].jp_flags &
534 JP_NOBOOL) ?
535 nononame(params[i].jp_name)
536 : noname(params[i].jp_name);
537 if (params[i].jp_flags & JP_NOBOOL) {
538 asprintf(&xo_nname, "{en:%s/true}", params[i].jp_name);
539 xo_emit(xo_nname);
540 } else {
541 asprintf(&xo_nname, "{en:%s/false}", params[i].jp_name);
542 xo_emit(xo_nname);
543 }
544 xo_emit("{d:/%s}", nname);
545 free(nname);
546 }
547 free(xo_nname);
548 continue;
549 }
550 xo_emit("{d:%s}=", params[i].jp_name);
551 }
552 if (!special_print(pflags, params + i))
553 quoted_print(pflags, params[i].jp_name, param_values[i]);
554 }
555 xo_emit("{P:\n}");
556 for (i = 0; i < nparams; i++)
557 if (params[i].jp_flags & JP_USER)
558 free(param_values[i]);
559 }
560
561 xo_close_instance("jail");
562 return (jid);
563 }
564
565 static void
quoted_print(int pflags,char * name,char * value)566 quoted_print(int pflags, char *name, char *value)
567 {
568 int qc;
569 char *p = value;
570
571 /* An empty string needs quoting. */
572 if (!*p) {
573 xo_emit("{ea:/%s}{da:/\"\"}", name, value, name);
574 return;
575 }
576
577 /*
578 * The value will be surrounded by quotes if it contains
579 * whitespace or quotes.
580 */
581 if (strchr(p, '\''))
582 qc = '"';
583 else if (strchr(p, '"'))
584 qc = '\'';
585 else {
586 qc = 0;
587 for (; *p; ++p)
588 if (isspace(*p)) {
589 qc = '"';
590 break;
591 }
592 }
593
594 if (qc && pflags & PRINT_QUOTED)
595 xo_emit("{P:/%c}", qc);
596
597 xo_emit("{a:/%s}", name, value);
598
599 if (qc && pflags & PRINT_QUOTED)
600 xo_emit("{P:/%c}", qc);
601 }
602
603 static int
special_print(int pflags,struct jailparam * param)604 special_print(int pflags, struct jailparam *param)
605 {
606 int ip_as_list;
607
608 switch (xo_get_style(NULL)) {
609 case XO_STYLE_JSON:
610 case XO_STYLE_XML:
611 ip_as_list = 1;
612 break;
613 default:
614 ip_as_list = 0;
615 }
616
617 if (!ip_as_list && param->jp_valuelen == 0) {
618 if (pflags & PRINT_QUOTED)
619 xo_emit("{P:\"\"}");
620 else if (!(pflags & PRINT_NAMEVAL))
621 xo_emit("{P:-}");
622 } else if (ip_as_list && !strcmp(param->jp_name, JAIL_PARAM_IP4_ADDR)) {
623 emit_ip_addr_list(AF_INET, param->jp_name, param);
624 } else if (ip_as_list && !strcmp(param->jp_name, JAIL_PARAM_IP6_ADDR)) {
625 emit_ip_addr_list(AF_INET6, param->jp_name, param);
626 } else {
627 return 0;
628 }
629
630 return 1;
631 }
632
633 static void
emit_ip_addr_list(int af_family,const char * list_name,struct jailparam * param)634 emit_ip_addr_list(int af_family, const char *list_name, struct jailparam *param)
635 {
636 char ipbuf[INET6_ADDRSTRLEN];
637 size_t addr_len;
638 const char *emit_str;
639 int ai, count;
640
641 switch (af_family) {
642 case AF_INET:
643 addr_len = sizeof(struct in_addr);
644 emit_str = "{P: }{ql:ipv4_addr}{P:\n}";
645 break;
646 case AF_INET6:
647 addr_len = sizeof(struct in6_addr);
648 emit_str = "{P: }{ql:ipv6_addr}{P:\n}";
649 break;
650 default:
651 xo_err(1, "unsupported af_family");
652 return;
653 }
654
655 count = param->jp_valuelen / addr_len;
656
657 xo_open_list(list_name);
658 for (ai = 0; ai < count; ai++) {
659 if (inet_ntop(af_family,
660 ((uint8_t *)param->jp_value) + addr_len * ai,
661 ipbuf, sizeof(ipbuf)) == NULL) {
662 xo_err(1, "inet_ntop");
663 } else {
664 xo_emit(emit_str, ipbuf);
665 }
666 }
667 xo_close_list(list_name);
668 }
669