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1.29 ! martijn 1: /* $OpenBSD: snmpc.c,v 1.28 2020/08/03 14:45:54 martijn Exp $ */
1.1 martijn 2:
3: /*
4: * Copyright (c) 2019 Martijn van Duren <martijn@openbsd.org>
5: * Copyright (c) 2013 Reyk Floeter <reyk@openbsd.org>
6: *
7: * Permission to use, copy, modify, and distribute this software for any
8: * purpose with or without fee is hereby granted, provided that the above
9: * copyright notice and this permission notice appear in all copies.
10: *
11: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18: */
19:
20: #include <sys/limits.h>
21: #include <sys/types.h>
22: #include <sys/socket.h>
23: #include <sys/un.h>
24:
25: #include <arpa/inet.h>
1.10 martijn 26: #include <openssl/evp.h>
1.1 martijn 27:
28: #include <ber.h>
1.9 martijn 29: #include <ctype.h>
1.1 martijn 30: #include <err.h>
31: #include <errno.h>
1.28 martijn 32: #include <locale.h>
1.1 martijn 33: #include <netdb.h>
34: #include <poll.h>
35: #include <stdio.h>
36: #include <stdlib.h>
37: #include <stdint.h>
38: #include <string.h>
39: #include <time.h>
40: #include <unistd.h>
1.19 martijn 41: #include <util.h>
1.29 ! martijn 42: #include <wchar.h>
1.1 martijn 43:
44: #include "smi.h"
45: #include "snmp.h"
1.9 martijn 46: #include "usm.h"
1.1 martijn 47:
1.11 martijn 48: #define GETOPT_COMMON "A:a:c:E:e:K:k:l:n:O:r:t:u:v:X:x:Z:"
1.1 martijn 49:
50: int snmpc_get(int, char *[]);
51: int snmpc_walk(int, char *[]);
1.13 martijn 52: int snmpc_set(int, char *[]);
1.1 martijn 53: int snmpc_trap(int, char *[]);
1.19 martijn 54: int snmpc_df(int, char *[]);
1.1 martijn 55: int snmpc_mibtree(int, char *[]);
1.8 martijn 56: struct snmp_agent *snmpc_connect(char *, char *);
1.1 martijn 57: int snmpc_parseagent(char *, char *);
58: int snmpc_print(struct ber_element *);
1.15 martijn 59: __dead void snmpc_printerror(enum snmp_error, struct ber_element *, int,
60: const char *);
1.9 martijn 61: char *snmpc_hex2bin(char *, size_t *);
1.29 ! martijn 62: ssize_t snmpc_mbswidth(char *);
1.13 martijn 63: struct ber_element *snmpc_varbindparse(int, char *[]);
1.1 martijn 64: void usage(void);
65:
66: struct snmp_app {
67: const char *name;
68: const int usecommonopt;
69: const char *optstring;
70: const char *usage;
1.2 deraadt 71: int (*exec)(int, char *[]);
1.1 martijn 72: };
73:
74: struct snmp_app snmp_apps[] = {
1.2 deraadt 75: { "get", 1, NULL, "agent oid ...", snmpc_get },
76: { "getnext", 1, NULL, "agent oid ...", snmpc_get },
1.20 martijn 77: { "walk", 1, "C:", "[-C cIipt] [-C E endoid] [-C s skipoid] agent [oid]", snmpc_walk },
1.2 deraadt 78: { "bulkget", 1, "C:", "[-C n<nonrep>r<maxrep>] agent oid ...", snmpc_get },
1.20 martijn 79: { "bulkwalk", 1, "C:", "[-C cipn<nonrep>r<maxrep>] [-C s skipoid] agent [oid]", snmpc_walk },
1.13 martijn 80: { "set", 1, NULL, "agent oid type value [oid type value] ...", snmpc_set },
1.2 deraadt 81: { "trap", 1, NULL, "agent uptime oid [oid type value] ...", snmpc_trap },
1.20 martijn 82: { "df", 1, "C:", "[-Ch] [-Cr<maxrep>] agent", snmpc_df },
1.2 deraadt 83: { "mibtree", 0, "O:", "[-O fnS]", snmpc_mibtree }
1.1 martijn 84: };
85: struct snmp_app *snmp_app = NULL;
86:
87: char *community = "public";
1.9 martijn 88: struct snmp_v3 *v3;
1.1 martijn 89: char *mib = "mib_2";
90: int retries = 5;
91: int timeout = 1;
1.9 martijn 92: enum snmp_version version = SNMP_V2C;
1.1 martijn 93: int print_equals = 1;
94: int print_varbind_only = 0;
95: int print_summary = 0;
96: int print_time = 0;
1.19 martijn 97: int print_human = 0;
1.1 martijn 98: int walk_check_increase = 1;
99: int walk_fallback_oid = 1;
100: int walk_include_oid = 0;
101: int smi_print_hint = 1;
102: int non_repeaters = 0;
103: int max_repetitions = 10;
104: struct ber_oid walk_end = {{0}, 0};
1.18 martijn 105: struct ber_oid *walk_skip = NULL;
106: size_t walk_skip_len = 0;
1.1 martijn 107: enum smi_oid_lookup oid_lookup = smi_oidl_short;
108: enum smi_output_string output_string = smi_os_default;
1.28 martijn 109: int utf8 = 0;
1.1 martijn 110:
111: int
112: main(int argc, char *argv[])
113: {
1.10 martijn 114: const EVP_MD *md = NULL;
1.11 martijn 115: const EVP_CIPHER *cipher = NULL;
1.9 martijn 116: struct snmp_sec *sec;
117: char *user = NULL;
1.24 martijn 118: enum usm_key_level authkeylevel = USM_KEY_UNSET;
1.10 martijn 119: char *authkey = NULL;
120: size_t authkeylen = 0;
1.24 martijn 121: enum usm_key_level privkeylevel = USM_KEY_UNSET;
1.11 martijn 122: char *privkey = NULL;
123: size_t privkeylen = 0;
1.9 martijn 124: int seclevel = SNMP_MSGFLAG_REPORT;
125: char *ctxname = NULL;
126: char *ctxengineid = NULL, *secengineid = NULL;
127: size_t ctxengineidlen, secengineidlen;
128: int zflag = 0;
1.24 martijn 129: long long boots = 0, time = 0;
1.1 martijn 130: char optstr[BUFSIZ];
131: const char *errstr;
132: char *strtolp;
133: int ch;
134: size_t i;
135:
1.28 martijn 136: /*
137: * Determine if output can handle UTF-8 based on locale.
138: */
139: setlocale(LC_CTYPE, "");
140: utf8 = MB_CUR_MAX > 1;
141: /*
142: * SMIv2 allows for UTF-8 text at some locations.
143: * Set it explicitly so we can handle it on the input side.
144: */
145: if (setlocale(LC_CTYPE, "en_US.UTF-8") == NULL)
146: errx(1, "setlocale(LC_CTYPE, \"en_US.UTF-8\") failed");
147:
1.22 martijn 148: if (pledge("stdio inet dns unix", NULL) == -1)
1.1 martijn 149: err(1, "pledge");
1.2 deraadt 150:
1.1 martijn 151: if (argc <= 1)
152: usage();
153:
1.14 bluhm 154: optstr[0] = '\0';
1.1 martijn 155: for (i = 0; i < sizeof(snmp_apps)/sizeof(*snmp_apps); i++) {
156: if (strcmp(snmp_apps[i].name, argv[1]) == 0) {
157: snmp_app = &snmp_apps[i];
158: if (snmp_app->optstring != NULL) {
159: if (strlcpy(optstr, snmp_app->optstring,
160: sizeof(optstr)) > sizeof(optstr))
161: errx(1, "strlcat");
162: }
163: break;
164: }
165: }
166: if (snmp_app == NULL)
167: usage();
168:
169: if (snmp_app->usecommonopt) {
170: if (strlcat(optstr, GETOPT_COMMON, sizeof(optstr)) >
171: sizeof(optstr))
172: errx(1, "strlcpy");
173: }
174:
175: argc--;
176: argv++;
177:
178: smi_init();
179:
180: while ((ch = getopt(argc, argv, optstr)) != -1) {
181: switch (ch) {
1.10 martijn 182: case 'A':
183: authkey = optarg;
184: authkeylen = strlen(authkey);
185: authkeylevel = USM_KEY_PASSWORD;
186: break;
187: case 'a':
188: if (strcasecmp(optarg, "MD5") == 0)
189: md = EVP_md5();
190: else if (strcasecmp(optarg, "SHA") == 0)
191: md = EVP_sha1();
192: else if (strcasecmp(optarg, "SHA-224") == 0)
193: md = EVP_sha224();
194: else if (strcasecmp(optarg, "SHA-256") == 0)
195: md = EVP_sha256();
196: else if (strcasecmp(optarg, "SHA-384") == 0)
197: md = EVP_sha384();
198: else if (strcasecmp(optarg, "SHA-512") == 0)
199: md = EVP_sha512();
200: else
201: errx(1, "Invalid authentication protocol "
202: "specified after -a flag: %s", optarg);
203: break;
1.1 martijn 204: case 'c':
205: community = optarg;
206: break;
1.9 martijn 207: case 'E':
208: ctxengineid = snmpc_hex2bin(optarg,
209: &ctxengineidlen);
210: if (ctxengineid == NULL) {
211: if (errno == EINVAL)
212: errx(1, "Bad engine ID value "
213: "after -3E flag.");
214: err(1, "-3E");
215: }
216: break;
217: case 'e':
218: secengineid = snmpc_hex2bin(optarg,
219: &secengineidlen);
220: if (secengineid == NULL) {
221: if (errno == EINVAL)
222: errx(1, "Bad engine ID value "
223: "after -3e flag.");
224: err(1, "-3e");
225: }
226: break;
1.11 martijn 227: case 'K':
228: privkey = snmpc_hex2bin(optarg, &privkeylen);
229: if (privkey == NULL) {
230: if (errno == EINVAL)
231: errx(1, "Bad key value after "
232: "-3K flag.");
233: errx(1, "-3K");
234: }
235: privkeylevel = USM_KEY_LOCALIZED;
236: break;
1.10 martijn 237: case 'k':
238: authkey = snmpc_hex2bin(optarg, &authkeylen);
239: if (authkey == NULL) {
240: if (errno == EINVAL)
241: errx(1, "Bad key value after -k flag.");
242: err(1, "-k");
243: }
244: authkeylevel = USM_KEY_LOCALIZED;
245: break;
246: case 'l':
247: if (strcasecmp(optarg, "noAuthNoPriv") == 0)
248: seclevel = SNMP_MSGFLAG_REPORT;
249: else if (strcasecmp(optarg, "authNoPriv") == 0)
250: seclevel = SNMP_MSGFLAG_AUTH |
251: SNMP_MSGFLAG_REPORT;
1.11 martijn 252: else if (strcasecmp(optarg, "authPriv") == 0)
253: seclevel = SNMP_MSGFLAG_AUTH |
254: SNMP_MSGFLAG_PRIV | SNMP_MSGFLAG_REPORT;
1.10 martijn 255: else
256: errx(1, "Invalid security level specified "
257: "after -l flag: %s", optarg);
258: break;
1.9 martijn 259: case 'n':
260: ctxname = optarg;
261: break;
1.1 martijn 262: case 'r':
263: if ((retries = strtonum(optarg, 0, INT_MAX,
264: &errstr)) == 0) {
265: if (errstr != NULL)
266: errx(1, "-r: %s argument", errstr);
267: }
268: break;
269: case 't':
270: if ((timeout = strtonum(optarg, 1, INT_MAX,
271: &errstr)) == 0) {
272: if (errstr != NULL)
273: errx(1, "-t: %s argument", errstr);
274: }
275: break;
1.9 martijn 276: case 'u':
277: user = optarg;
278: break;
1.1 martijn 279: case 'v':
280: if (strcmp(optarg, "1") == 0)
281: version = SNMP_V1;
282: else if (strcmp(optarg, "2c") == 0)
283: version = SNMP_V2C;
1.9 martijn 284: else if (strcmp(optarg, "3") == 0)
285: version = SNMP_V3;
1.1 martijn 286: else
287: errc(1, EINVAL, "-v");
288: break;
289: case 'C':
290: for (i = 0; i < strlen(optarg); i++) {
291: switch (optarg[i]) {
292: case 'c':
293: if (strcmp(snmp_app->name, "walk") &&
294: strcmp(snmp_app->name, "bulkwalk"))
295: usage();
296: walk_check_increase = 0;
297: break;
1.19 martijn 298: case 'h':
299: if (strcmp(snmp_app->name, "df"))
300: usage();
301: print_human = 1;
302: break;
1.1 martijn 303: case 'i':
304: if (strcmp(snmp_app->name, "walk") &&
305: strcmp(snmp_app->name, "bulkwalk"))
306: usage();
307: walk_include_oid = 1;
308: break;
309: case 'n':
310: if (strcmp(snmp_app->name, "bulkget") &&
311: strcmp(snmp_app->name, "bulkwalk"))
312: usage();
313: errno = 0;
314: non_repeaters = strtol(&optarg[i + 1],
315: &strtolp, 10);
316: if (non_repeaters < 0 ||
317: errno == ERANGE) {
318: if (non_repeaters < 0)
319: errx(1, "%s%s",
320: "-Cn: too small ",
321: "argument");
322: else
323: errx(1, "%s%s",
324: "-Cn: too large",
325: "argument");
326: } else if (&optarg[i + 1] == strtolp)
327: errx(1, "-Cn invalid argument");
328: i = strtolp - optarg - 1;
329: break;
330: case 'p':
331: if (strcmp(snmp_app->name, "walk") &&
332: strcmp(snmp_app->name, "bulkwalk"))
333: usage();
334: print_summary = 1;
335: break;
336: case 'r':
337: if (strcmp(snmp_app->name, "bulkget") &&
1.19 martijn 338: strcmp(snmp_app->name, "bulkwalk") &&
339: strcmp(snmp_app->name, "df"))
1.1 martijn 340: usage();
341: errno = 0;
342: max_repetitions = strtol(&optarg[i + 1],
343: &strtolp, 10);
344: if (max_repetitions < 0 ||
345: errno == ERANGE) {
346: if (max_repetitions < 0)
347: errx(1, "%s%s",
348: "-Cr: too small ",
349: "argument");
350: else
351: errx(1, "%s%s",
352: "-Cr: too large",
353: "argument");
354: } else if (&optarg[i + 1] == strtolp)
355: errx(1, "-Cr invalid argument");
356: i = strtolp - optarg - 1;
357: break;
1.18 martijn 358: case 's':
359: if (strcmp(snmp_app->name, "walk") &&
360: strcmp(snmp_app->name, "bulkwalk"))
361: usage();
362: if ((walk_skip = recallocarray(
363: walk_skip, walk_skip_len,
364: walk_skip_len + 1,
365: sizeof(*walk_skip))) == NULL)
366: errx(1, "malloc");
367: if (smi_string2oid(argv[optind],
368: &(walk_skip[walk_skip_len])) != 0)
369: errx(1, "%s: %s",
370: "Unknown Object Identifier",
371: argv[optind]);
372: walk_skip_len++;
373: optind++;
374: break;
1.1 martijn 375: case 't':
376: if (strcmp(snmp_app->name, "walk"))
377: usage();
378: print_time = 1;
379: break;
380: case 'E':
381: if (strcmp(snmp_app->name, "walk"))
382: usage();
383: if (smi_string2oid(argv[optind],
384: &walk_end) != 0)
385: errx(1, "%s: %s",
386: "Unknown Object Identifier",
387: argv[optind]);
388: optind++;
389: continue;
390: case 'I':
391: if (strcmp(snmp_app->name, "walk"))
392: usage();
393: walk_fallback_oid = 0;
394: break;
395: default:
396: usage();
397: }
398: if (optarg[i] == 'E')
399: break;
400: }
401: break;
402: case 'O':
403: for (i = 0; i < strlen(optarg); i++) {
404: if (strcmp(snmp_app->name, "mibtree") == 0 &&
405: optarg[i] != 'f' && optarg[i] != 'n' &&
406: optarg[i] != 'S')
407: usage();
408: switch (optarg[i]) {
409: case 'a':
410: output_string = smi_os_ascii;
411: break;
412: case 'f':
413: oid_lookup = smi_oidl_full;
414: break;
415: case 'n':
416: oid_lookup = smi_oidl_numeric;
417: break;
418: case 'q':
419: print_equals = 0;
420: smi_print_hint = 0;
421: break;
422: case 'v':
1.2 deraadt 423: print_varbind_only = 1;
1.1 martijn 424: break;
425: case 'x':
426: output_string = smi_os_hex;
427: break;
428: case 'S':
429: oid_lookup = smi_oidl_short;
430: break;
431: case 'Q':
432: smi_print_hint = 0;
433: break;
434: default:
435: usage();
436: }
437: }
438: break;
1.11 martijn 439: case 'X':
440: privkey = optarg;
441: privkeylen = strlen(privkey);
442: privkeylevel = USM_KEY_PASSWORD;
443: break;
444: case 'x':
445: if (strcasecmp(optarg, "DES") == 0)
446: cipher = EVP_des_cbc();
447: else if (strcasecmp(optarg, "AES") == 0)
448: cipher = EVP_aes_128_cfb128();
449: else
450: errx(1, "Invalid privacy protocol "
451: "specified after -3x flag: %s",
452: optarg);
453: break;
1.9 martijn 454: case 'Z':
455: boots = strtoll(optarg, &strtolp, 10);
456: if (boots < 0 || strtolp == optarg || strtolp[0] != ',')
457: usage();
458: strtolp++;
459: while (strtolp[0] == ' ' && strtolp[0] == '\t')
460: strtolp++;
461: time = strtoll(strtolp, &strtolp, 10);
462: if (boots < 0 || strtolp == optarg)
463: usage();
464: zflag = 1;
465: break;
1.1 martijn 466: default:
467: usage();
468: }
469: }
470: argc -= optind;
471: argv += optind;
472:
1.9 martijn 473: if (version == SNMP_V3) {
474: /* Setup USM */
475: if (user == NULL || user[0] == '\0')
476: errx(1, "No securityName specified");
477: if ((sec = usm_init(user, strlen(user))) == NULL)
478: err(1, "usm_init");
1.10 martijn 479: if (seclevel & SNMP_MSGFLAG_AUTH) {
480: if (md == NULL)
481: md = EVP_md5();
482: if (authkey == NULL)
483: errx(1, "No authKey or authPassword specified");
484: if (usm_setauth(sec, md, authkey, authkeylen,
485: authkeylevel) == -1)
486: err(1, "Can't set authkey");
487: }
1.11 martijn 488: if (seclevel & SNMP_MSGFLAG_PRIV) {
489: if (cipher == NULL)
490: cipher = EVP_des_cbc();
491: if (privkey == NULL)
492: errx(1, "No privKey or privPassword specified");
493: if (usm_setpriv(sec, cipher, privkey, privkeylen,
494: privkeylevel) == -1)
495: err(1, "Can't set authkey");
496: }
1.9 martijn 497: if (secengineid != NULL) {
498: if (usm_setengineid(sec, secengineid,
499: secengineidlen) == -1)
500: err(1, "Can't set secengineid");
501: }
502: if (zflag)
503: if (usm_setbootstime(sec, boots, time) == -1)
504: err(1, "Can't set boots/time");
505: v3 = snmp_v3_init(seclevel, ctxname, ctxname == NULL ? 0 :
506: strlen(ctxname), sec);
507: if (v3 == NULL)
508: err(1, "snmp_v3_init");
509: if (ctxengineid != NULL) {
510: if (snmp_v3_setengineid(v3, ctxengineid,
511: ctxengineidlen) == -1)
512: err(1, "Can't set ctxengineid");
513: }
514: }
515:
516:
1.1 martijn 517: return snmp_app->exec(argc, argv);
518: }
519:
520: int
521: snmpc_get(int argc, char *argv[])
522: {
523: struct ber_oid *oid;
524: struct ber_element *pdu, *varbind;
525: struct snmp_agent *agent;
526: int errorstatus, errorindex;
527: int i;
1.9 martijn 528: int class;
529: unsigned type;
1.15 martijn 530: char *hint = NULL;
1.1 martijn 531:
532: if (argc < 2)
533: usage();
534:
1.8 martijn 535: if ((agent = snmpc_connect(argv[0], "161")) == NULL)
1.1 martijn 536: err(1, "%s", snmp_app->name);
537: agent->timeout = timeout;
538: agent->retries = retries;
539:
540: if (pledge("stdio", NULL) == -1)
541: err(1, "pledge");
542: argc--;
543: argv++;
544:
545: oid = reallocarray(NULL, argc, sizeof(*oid));
1.3 deraadt 546: if (oid == NULL)
547: err(1, "malloc");
1.1 martijn 548: for (i = 0; i < argc; i++) {
549: if (smi_string2oid(argv[i], &oid[i]) == -1)
1.12 semarie 550: errx(1, "%s: Unknown object identifier", argv[i]);
1.1 martijn 551: }
552: if (strcmp(snmp_app->name, "getnext") == 0) {
553: if ((pdu = snmp_getnext(agent, oid, argc)) == NULL)
554: err(1, "getnext");
555: } else if (strcmp(snmp_app->name, "bulkget") == 0) {
556: if (version < SNMP_V2C)
557: errx(1, "Cannot send V2 PDU on V1 session");
558: if (non_repeaters > argc)
559: errx(1, "need more objects than -Cn<num>");
560: if ((pdu = snmp_getbulk(agent, oid, argc, non_repeaters,
561: max_repetitions)) == NULL)
562: err(1, "bulkget");
563: } else {
564: if ((pdu = snmp_get(agent, oid, argc)) == NULL)
565: err(1, "get");
566: }
567:
1.16 tb 568: (void) ober_scanf_elements(pdu, "t{Sdd{e", &class, &type, &errorstatus,
1.9 martijn 569: &errorindex, &varbind);
1.15 martijn 570: if (errorstatus != 0) {
571: if (errorindex >= 1 && errorindex <= argc)
572: hint = argv[errorindex - 1];
573: snmpc_printerror((enum snmp_error) errorstatus, varbind,
574: errorindex, hint);
575: }
1.1 martijn 576:
1.9 martijn 577: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT)
578: printf("Received report:\n");
1.1 martijn 579: for (; varbind != NULL; varbind = varbind->be_next) {
580: if (!snmpc_print(varbind))
581: err(1, "Can't print response");
582: }
1.16 tb 583: ober_free_elements(pdu);
1.1 martijn 584: snmp_free_agent(agent);
585: return 0;
586: }
587:
588: int
589: snmpc_walk(int argc, char *argv[])
590: {
591: struct ber_oid oid, loid, noid;
592: struct ber_element *pdu, *varbind, *value;
593: struct timespec start, finish;
594: struct snmp_agent *agent;
595: const char *oids;
1.18 martijn 596: int n = 0, prev_cmp, skip_cmp;
1.1 martijn 597: int errorstatus, errorindex;
1.9 martijn 598: int class;
1.18 martijn 599: size_t i;
1.9 martijn 600: unsigned type;
1.1 martijn 601:
602: if (strcmp(snmp_app->name, "bulkwalk") == 0 && version < SNMP_V2C)
603: errx(1, "Cannot send V2 PDU on V1 session");
604: if (argc < 1 || argc > 2)
605: usage();
606: oids = argc == 1 ? mib : argv[1];
607:
1.8 martijn 608: if ((agent = snmpc_connect(argv[0], "161"))== NULL)
1.1 martijn 609: err(1, "%s", snmp_app->name);
610: agent->timeout = timeout;
611: agent->retries = retries;
612: if (pledge("stdio", NULL) == -1)
613: err(1, "pledge");
614:
615: if (smi_string2oid(oids, &oid) == -1)
616: errx(1, "%s: Unknown object identifier", oids);
617: bcopy(&oid, &noid, sizeof(noid));
618: if (print_time)
619: clock_gettime(CLOCK_MONOTONIC, &start);
620:
621: if (walk_include_oid) {
622: if ((pdu = snmp_get(agent, &oid, 1)) == NULL)
623: err(1, "%s", snmp_app->name);
624:
1.16 tb 625: (void) ober_scanf_elements(pdu, "t{Sdd{e", &class, &type,
1.9 martijn 626: &errorstatus, &errorindex, &varbind);
1.1 martijn 627: if (errorstatus != 0)
1.15 martijn 628: snmpc_printerror((enum snmp_error) errorstatus, varbind,
629: errorindex, oids);
1.1 martijn 630:
1.9 martijn 631: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT)
632: printf("Received report:\n");
1.1 martijn 633: if (!snmpc_print(varbind))
634: err(1, "Can't print response");
1.16 tb 635: ober_free_element(pdu);
1.9 martijn 636: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT)
637: return 1;
1.1 martijn 638: n++;
639: }
640: while (1) {
1.18 martijn 641: for (i = 0; i < walk_skip_len; i++) {
642: skip_cmp = ober_oid_cmp(&(walk_skip[i]), &noid);
643: if (skip_cmp == 0 || skip_cmp == 2) {
644: bcopy(&(walk_skip[i]), &noid, sizeof(noid));
645: noid.bo_id[noid.bo_n -1]++;
646: break;
647: }
648: }
1.1 martijn 649: bcopy(&noid, &loid, sizeof(loid));
650: if (strcmp(snmp_app->name, "bulkwalk") == 0) {
651: if ((pdu = snmp_getbulk(agent, &noid, 1,
652: non_repeaters, max_repetitions)) == NULL)
653: err(1, "bulkwalk");
654: } else {
655: if ((pdu = snmp_getnext(agent, &noid, 1)) == NULL)
656: err(1, "walk");
657: }
658:
1.16 tb 659: (void) ober_scanf_elements(pdu, "t{Sdd{e", &class, &type,
1.9 martijn 660: &errorstatus, &errorindex, &varbind);
1.1 martijn 661: if (errorstatus != 0) {
1.15 martijn 662: snmpc_printerror((enum snmp_error) errorstatus, varbind,
663: errorindex, NULL);
1.1 martijn 664: }
665:
1.9 martijn 666: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT)
667: printf("Received report:\n");
1.2 deraadt 668: for (; varbind != NULL; varbind = varbind->be_next) {
1.16 tb 669: (void) ober_scanf_elements(varbind, "{oe}", &noid,
1.1 martijn 670: &value);
671: if (value->be_class == BER_CLASS_CONTEXT &&
672: value->be_type == BER_TYPE_EOC)
673: break;
1.18 martijn 674: for (i = 0; i < walk_skip_len; i++) {
675: skip_cmp = ober_oid_cmp(&(walk_skip[i]), &noid);
676: if (skip_cmp == 0 || skip_cmp == 2)
677: break;
678: }
679: if (i < walk_skip_len)
680: continue;
1.16 tb 681: prev_cmp = ober_oid_cmp(&loid, &noid);
1.1 martijn 682: if (walk_check_increase && prev_cmp == -1)
683: errx(1, "OID not increasing");
1.16 tb 684: if (prev_cmp == 0 || ober_oid_cmp(&oid, &noid) != 2)
1.1 martijn 685: break;
686: if (walk_end.bo_n != 0 &&
1.16 tb 687: ober_oid_cmp(&walk_end, &noid) != -1)
1.1 martijn 688: break;
689:
690: if (!snmpc_print(varbind))
691: err(1, "Can't print response");
692: n++;
693: }
1.16 tb 694: ober_free_elements(pdu);
1.9 martijn 695: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT)
696: return 1;
1.1 martijn 697: if (varbind != NULL)
698: break;
699: }
700: if (walk_fallback_oid && n == 0) {
701: if ((pdu = snmp_get(agent, &oid, 1)) == NULL)
702: err(1, "%s", snmp_app->name);
703:
1.16 tb 704: (void) ober_scanf_elements(pdu, "t{Sdd{e", &class, &type,
1.9 martijn 705: &errorstatus, &errorindex, &varbind);
1.1 martijn 706: if (errorstatus != 0)
1.15 martijn 707: snmpc_printerror((enum snmp_error) errorstatus, varbind,
708: errorindex, oids);
1.1 martijn 709:
1.9 martijn 710: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT)
711: printf("Received report:\n");
1.1 martijn 712: if (!snmpc_print(varbind))
713: err(1, "Can't print response");
1.16 tb 714: ober_free_element(pdu);
1.9 martijn 715: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT)
716: return 1;
1.1 martijn 717: n++;
718: }
719: if (print_time)
720: clock_gettime(CLOCK_MONOTONIC, &finish);
721: if (print_summary)
722: printf("Variables found: %d\n", n);
723: if (print_time) {
724: if ((finish.tv_nsec -= start.tv_nsec) < 0) {
725: finish.tv_sec -= 1;
726: finish.tv_nsec += 1000000000;
727: }
728: finish.tv_sec -= start.tv_sec;
729: fprintf(stderr, "Total traversal time: %lld.%09ld seconds\n",
730: finish.tv_sec, finish.tv_nsec);
731: }
732: snmp_free_agent(agent);
733: return 0;
734: }
735:
736: int
1.13 martijn 737: snmpc_set(int argc, char *argv[])
738: {
739: struct snmp_agent *agent;
740: struct ber_element *pdu, *varbind;
741: int errorstatus, errorindex;
742: int class;
743: unsigned type;
1.15 martijn 744: char *hint = NULL;
1.13 martijn 745:
746: if (argc < 4)
747: usage();
748: if ((agent = snmpc_connect(argv[0], "161")) == NULL)
749: err(1, "%s", snmp_app->name);
750: argc--;
751: argv++;
752:
753: if (pledge("stdio", NULL) == -1)
754: err(1, "pledge");
755:
1.15 martijn 756: if ((pdu = snmp_set(agent, snmpc_varbindparse(argc, argv))) == NULL)
757: err(1, "set");
1.13 martijn 758:
1.16 tb 759: (void) ober_scanf_elements(pdu, "t{Sdd{e", &class, &type, &errorstatus,
1.13 martijn 760: &errorindex, &varbind);
1.15 martijn 761: if (errorstatus != 0) {
762: if (errorindex >= 1 && errorindex <= argc / 3)
763: hint = argv[(errorindex - 1) * 3];
764: snmpc_printerror((enum snmp_error) errorstatus, varbind,
765: errorindex, hint);
766: }
1.13 martijn 767:
768: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT)
769: printf("Received report:\n");
770: for (; varbind != NULL; varbind = varbind->be_next) {
771: if (!snmpc_print(varbind))
772: err(1, "Can't print response");
773: }
1.16 tb 774: ober_free_elements(pdu);
1.13 martijn 775: snmp_free_agent(agent);
776: return 0;
777: }
778:
779: int
1.1 martijn 780: snmpc_trap(int argc, char *argv[])
781: {
782: struct snmp_agent *agent;
783: struct timespec ts;
1.13 martijn 784: struct ber_oid trapoid;
1.1 martijn 785: const char *errstr = NULL;
786: long long lval;
787:
788: if (version == SNMP_V1)
789: errx(1, "trap is not supported for snmp v1");
790:
1.8 martijn 791: if ((agent = snmpc_connect(argv[0], "162")) == NULL)
1.1 martijn 792: err(1, "%s", snmp_app->name);
793:
794: if (pledge("stdio", NULL) == -1)
795: err(1, "pledge");
796:
797: if (argv[1][0] == '\0') {
798: if (clock_gettime(CLOCK_UPTIME, &ts) == -1)
799: err(1, "clock_gettime");
800: } else {
801: lval = strtonum(argv[1], 0, LLONG_MAX, &errstr);
802: if (errstr != NULL)
803: errx(1, "Bad value notation (%s)", argv[1]);
804: ts.tv_sec = lval / 100;
805: ts.tv_nsec = (lval % 100) * 10000000;
806: }
807: if (smi_string2oid(argv[2], &trapoid) == -1)
808: errx(1, "Invalid oid: %s\n", argv[2]);
809:
810: argc -= 3;
811: argv += 3;
812:
1.13 martijn 813: snmp_trap(agent, &ts, &trapoid, snmpc_varbindparse(argc, argv));
1.19 martijn 814:
815: return 0;
816: }
817:
818: #define INCR_NEXTTAB(x) ((x + 8) & ~7)
819: #define NEXTTAB(x) (8 - (x & 7))
820: int
821: snmpc_df(int argc, char *argv[])
822: {
823: struct snmpc_df {
824: uint32_t index;
1.29 ! martijn 825: char *descr;
! 826: int descrwidth;
1.19 martijn 827: /* Theoretical maximum for 2 32 bit values multiplied */
828: char size[21];
829: char used[21];
830: char avail[21];
831: char proc[5];
832: } *df = NULL;
833: struct ber_oid descroid = {{ 1, 3, 6, 1, 2, 1, 25, 2, 3, 1, 3 }, 11};
834: struct ber_oid unitsoid = {{ 1, 3, 6, 1, 2, 1, 25, 2, 3, 1, 4 }, 11};
835: struct ber_oid sizeoid = {{ 1, 3, 6, 1, 2, 1, 25, 2, 3, 1, 5 }, 11};
836: struct ber_oid usedoid = {{ 1, 3, 6, 1, 2, 1, 25, 2, 3, 1, 6 }, 11};
837: struct ber_oid oid, *reqoid;
1.29 ! martijn 838: char oids[SNMP_MAX_OID_STRLEN];
! 839: struct ber_element *pdu, *varbind, *elm;
1.19 martijn 840: struct snmp_agent *agent;
841: int errorstatus, errorindex;
842: int class;
843: size_t i, j, rows = 0;
844: unsigned type;
845: char *string;
846: int descrlen = 0, sizelen = 0, usedlen = 0, availlen = 0, proclen = 0;
847: int len;
848: long long units, size, used;
849: int fmtret;
850:
851: if (argc != 1)
852: usage();
853:
854: if ((agent = snmpc_connect(argv[0], "161")) == NULL)
855: err(1, "%s", snmp_app->name);
856: agent->timeout = timeout;
857: agent->retries = retries;
858:
859: if (pledge("stdio", NULL) == -1)
860: err(1, "pledge");
861:
862: descrlen = sizeof("Description") - 1;
863: sizelen = sizeof("Size") - 1;
864: usedlen = sizeof("Used") - 1;
865: availlen = sizeof("Available") - 1;
866: proclen = sizeof("Used%") - 1;
867:
868: bcopy(&descroid, &oid, sizeof(descroid));
869:
870: i = 0;
871: while(1) {
872: if (version < SNMP_V2C) {
873: if ((pdu = snmp_getnext(agent, &oid, 1)) == NULL)
874: err(1, "df");
875: } else {
876: if ((pdu = snmp_getbulk(agent, &oid, 1, 0,
877: max_repetitions)) == NULL)
878: err(1, "df");
879: }
880:
881: (void) ober_scanf_elements(pdu, "t{Sdd{e", &class, &type,
882: &errorstatus, &errorindex, &varbind);
883: if (errorstatus != 0)
884: snmpc_printerror((enum snmp_error) errorstatus, varbind,
885: errorindex, NULL);
886:
887: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT) {
888: printf("Received report:\n");
889: for (; varbind != NULL; varbind = varbind->be_next) {
890: if (!snmpc_print(varbind))
891: err(1, "Can't print response");
892: }
893: return 1;
894: }
895: for (; varbind != NULL; varbind = varbind->be_next) {
1.29 ! martijn 896: if (ober_scanf_elements(varbind, "{os", &oid,
! 897: &string) == -1 ||
! 898: ober_oid_cmp(&descroid, &oid) != 2)
1.19 martijn 899: break;
900: rows++;
901: }
902: if ((df = reallocarray(df, rows, sizeof(*df))) == NULL)
903: err(1, "malloc");
904: (void) ober_scanf_elements(pdu, "{SSS{e", &varbind);
905: for (; i < rows; varbind = varbind->be_next, i++) {
1.29 ! martijn 906: if (ober_scanf_elements(varbind, "{oe", &oid,
! 907: &elm) == -1) {
1.19 martijn 908: i--;
909: rows--;
910: continue;
911: }
1.29 ! martijn 912: if (ober_oid_cmp(&descroid, &oid) != 2)
! 913: break;
1.19 martijn 914: df[i].index = oid.bo_id[oid.bo_n - 1];
1.29 ! martijn 915: if ((df[i].descr = smi_print_element(&oid, elm, 0,
! 916: smi_os_ascii, 0, utf8)) == NULL) {
! 917: smi_oid2string(&oid, oids, sizeof(oids),
! 918: oid_lookup);
! 919: warn("df: can't print oid %s", oids);
! 920: i--;
! 921: rows--;
! 922: continue;
! 923: }
! 924: if ((df[i].descrwidth =
! 925: (int) snmpc_mbswidth(df[i].descr)) == -1)
! 926: err(1, "df: invalid hrStorageDescr");
! 927: if (df[i].descrwidth > descrlen)
! 928: descrlen = df[i].descrwidth;
1.19 martijn 929: }
930: ober_free_elements(pdu);
931: if (varbind != NULL)
932: break;
933: }
934:
935: if (max_repetitions < 3)
936: max_repetitions = 3;
937: if ((reqoid = reallocarray(NULL, max_repetitions, sizeof(*reqoid))) == NULL)
938: err(1, "malloc");
939: for (i = 0; i < rows;) {
940: for (j = 0; i + j < rows && j < (size_t)max_repetitions / 3;
941: j++) {
942: bcopy(&unitsoid, &(reqoid[(j * 3) + 0]),
943: sizeof(unitsoid));
944: reqoid[(j * 3) + 0].bo_id[
945: reqoid[(j * 3) + 0].bo_n++] = df[i + j].index;
946: bcopy(&sizeoid, &(reqoid[(j * 3) + 1]),
947: sizeof(sizeoid));
948: reqoid[(j * 3) + 1].bo_id[
949: reqoid[(j * 3) + 1].bo_n++] = df[i + j].index;
950: bcopy(&usedoid, &(reqoid[(j * 3) + 2]),
951: sizeof(usedoid));
952: reqoid[(j * 3) + 2].bo_id[
953: reqoid[(j * 3) + 2].bo_n++] = df[i + j].index;
954: }
955: if ((pdu = snmp_get(agent, reqoid, j * 3)) == NULL)
956: err(1, "df");
957: (void) ober_scanf_elements(pdu, "t{Sdd{e", &class, &type,
958: &errorstatus, &errorindex, &varbind);
959: if (errorstatus != 0)
960: snmpc_printerror((enum snmp_error) errorstatus, varbind,
961: errorindex, NULL);
962: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT) {
963: printf("Received report:\n");
964: for (; varbind != NULL; varbind = varbind->be_next) {
965: if (!snmpc_print(varbind))
966: err(1, "Can't print response");
967: }
968: }
969: for (j = 0; varbind != NULL; i++) {
970: if (ober_scanf_elements(varbind, "{oi}{oi}{oi}",
971: &(reqoid[0]), &units, &(reqoid[1]), &size,
972: &(reqoid[2]), &used, &varbind) == -1) {
973: break;
974: }
975: varbind = varbind->be_next->be_next->be_next;
976:
977: unitsoid.bo_id[unitsoid.bo_n++] = df[i].index;
978: if (ober_oid_cmp(&unitsoid, &(reqoid[0])) != 0) {
979: warnx("df: received invalid object");
980: break;
981: }
982: unitsoid.bo_n--;
983: sizeoid.bo_id[sizeoid.bo_n++] = df[i].index;
984: if (ober_oid_cmp(&sizeoid, &(reqoid[1])) != 0) {
985: warnx("df: received invalid object");
986: break;
987: }
988: sizeoid.bo_n--;
989: usedoid.bo_id[usedoid.bo_n++] = df[i].index;
990: if (ober_oid_cmp(&usedoid, &(reqoid[2])) != 0) {
991: warnx("df: received invalid object");
992: break;
993: }
994: usedoid.bo_n--;
995: if (print_human)
996: fmtret = fmt_scaled((units * size), df[i].size);
997: if (!print_human || fmtret == -1)
998: snprintf(df[i].size, sizeof(df[i].size), "%lld",
999: (units * size) / 1024);
1000: len = (int) strlen(df[i].size);
1001: if (len > sizelen)
1002: sizelen = len;
1003: if (print_human)
1004: fmtret = fmt_scaled(units * used, df[i].used);
1005: if (!print_human || fmtret == -1)
1006: snprintf(df[i].used, sizeof(df[i].used), "%lld",
1007: (units * used) / 1024);
1008: len = (int) strlen(df[i].used);
1009: if (len > usedlen)
1010: usedlen = len;
1011: if (print_human)
1012: fmtret = fmt_scaled(units * (size - used),
1013: df[i].avail);
1014: if (!print_human || fmtret == -1)
1015: snprintf(df[i].avail, sizeof(df[i].avail),
1016: "%lld", (units * (size - used)) / 1024);
1017: len = (int) strlen(df[i].avail);
1.23 martijn 1018: if (len > availlen)
1.19 martijn 1019: availlen = len;
1020: if (size == 0)
1021: strlcpy(df[i].proc, "0%", sizeof(df[i].proc));
1022: else {
1023: snprintf(df[i].proc, sizeof(df[i].proc),
1024: "%lld%%", (used * 100) / size);
1025: }
1026: len = (int) strlen(df[i].proc);
1027: if (len > proclen)
1028: proclen = len;
1029: j++;
1030: }
1031: if (j == 0) {
1032: warnx("Failed to retrieve information for %s",
1033: df[i].descr);
1034: memmove(df + i, df + i + 1,
1035: (rows - i - 1) * sizeof(*df));
1036: rows--;
1037: i--;
1038: }
1039: }
1040:
1041: printf("%-*s%*s%*s%*s%*s\n",
1042: descrlen, "Description",
1043: NEXTTAB(descrlen) + sizelen, "Size",
1044: NEXTTAB(sizelen) + usedlen, "Used",
1045: NEXTTAB(usedlen) + availlen, "Available",
1046: NEXTTAB(availlen) + proclen, "Used%");
1047: for (i = 0; i < rows; i++) {
1.29 ! martijn 1048: printf("%s%*s%*s%*s%*s%*s\n",
! 1049: df[i].descr, descrlen - df[i].descrwidth, "",
1.19 martijn 1050: NEXTTAB(descrlen) + sizelen, df[i].size,
1051: NEXTTAB(sizelen) + usedlen, df[i].used,
1052: NEXTTAB(usedlen) + availlen, df[i].avail,
1053: NEXTTAB(availlen) + proclen, df[i].proc);
1054: }
1.1 martijn 1055:
1056: return 0;
1057: }
1058:
1059: int
1060: snmpc_mibtree(int argc, char *argv[])
1061: {
1062: struct oid *oid;
1063: char buf[BUFSIZ];
1064:
1.25 martijn 1065: for (oid = NULL; (oid = smi_foreach(oid)) != NULL;) {
1.1 martijn 1066: smi_oid2string(&oid->o_id, buf, sizeof(buf), oid_lookup);
1067: printf("%s\n", buf);
1068: }
1069: return 0;
1.8 martijn 1070: }
1071:
1072: struct snmp_agent *
1073: snmpc_connect(char *host, char *port)
1074: {
1075: switch (version) {
1076: case SNMP_V1:
1077: case SNMP_V2C:
1078: return snmp_connect_v12(snmpc_parseagent(host, port), version,
1079: community);
1.9 martijn 1080: case SNMP_V3:
1081: return snmp_connect_v3(snmpc_parseagent(host, port), v3);
1.8 martijn 1082: }
1083: return NULL;
1.1 martijn 1084: }
1085:
1086: int
1087: snmpc_print(struct ber_element *elm)
1088: {
1089: struct ber_oid oid;
1090: char oids[SNMP_MAX_OID_STRLEN];
1091: char *value;
1092:
1093: elm = elm->be_sub;
1.16 tb 1094: if (ober_get_oid(elm, &oid) != 0) {
1.1 martijn 1095: errno = EINVAL;
1096: return 0;
1097: }
1098:
1099: elm = elm->be_next;
1.28 martijn 1100: value = smi_print_element(&oid, elm, smi_print_hint, output_string,
1101: oid_lookup, utf8);
1.1 martijn 1102: if (value == NULL)
1103: return 0;
1104:
1105: if (print_varbind_only)
1106: printf("%s\n", value);
1107: else if (print_equals) {
1108: smi_oid2string(&oid, oids, sizeof(oids), oid_lookup);
1109: printf("%s = %s\n", oids, value);
1110: } else {
1111: smi_oid2string(&oid, oids, sizeof(oids), oid_lookup);
1112: printf("%s %s\n", oids, value);
1113: }
1114: free(value);
1.2 deraadt 1115:
1.1 martijn 1116: return 1;
1117: }
1118:
1119: __dead void
1.15 martijn 1120: snmpc_printerror(enum snmp_error error, struct ber_element *varbind,
1121: int index, const char *hint)
1.1 martijn 1122: {
1.15 martijn 1123: struct ber_oid hoid, vboid;
1124: char oids[SNMP_MAX_OID_STRLEN];
1125: const char *oid = NULL;
1126: int i;
1127:
1128: if (index >= 1) {
1129: /* Only print if the index is in the reply */
1.26 martijn 1130: for (i = 1; varbind != NULL && i < index;
1.15 martijn 1131: varbind = varbind->be_next)
1132: i++;
1133: if (varbind != NULL &&
1.16 tb 1134: ober_get_oid(varbind->be_sub, &vboid) == 0) {
1.15 martijn 1135: /* If user and reply conform print user input */
1136: if (hint != NULL &&
1137: smi_string2oid(hint, &hoid) == 0 &&
1.16 tb 1138: ober_oid_cmp(&hoid, &vboid) == 0)
1.15 martijn 1139: oid = hint;
1140: else
1141: oid = smi_oid2string(&vboid, oids,
1142: sizeof(oids), oid_lookup);
1143: }
1144: }
1145: if (oid == NULL)
1146: oid = "?";
1147:
1.2 deraadt 1148: switch (error) {
1.1 martijn 1149: case SNMP_ERROR_NONE:
1150: errx(1, "No error, how did I get here?");
1151: case SNMP_ERROR_TOOBIG:
1152: errx(1, "Can't parse oid %s: Response too big", oid);
1153: case SNMP_ERROR_NOSUCHNAME:
1154: errx(1, "Can't parse oid %s: No such object", oid);
1155: case SNMP_ERROR_BADVALUE:
1156: errx(1, "Can't parse oid %s: Bad value", oid);
1157: case SNMP_ERROR_READONLY:
1158: errx(1, "Can't parse oid %s: Read only", oid);
1159: case SNMP_ERROR_GENERR:
1160: errx(1, "Can't parse oid %s: Generic error", oid);
1161: case SNMP_ERROR_NOACCESS:
1162: errx(1, "Can't parse oid %s: Access denied", oid);
1163: case SNMP_ERROR_WRONGTYPE:
1164: errx(1, "Can't parse oid %s: Wrong type", oid);
1165: case SNMP_ERROR_WRONGLENGTH:
1166: errx(1, "Can't parse oid %s: Wrong length", oid);
1167: case SNMP_ERROR_WRONGENC:
1168: errx(1, "Can't parse oid %s: Wrong encoding", oid);
1169: case SNMP_ERROR_WRONGVALUE:
1170: errx(1, "Can't parse oid %s: Wrong value", oid);
1171: case SNMP_ERROR_NOCREATION:
1172: errx(1, "Can't parse oid %s: Can't be created", oid);
1173: case SNMP_ERROR_INCONVALUE:
1174: errx(1, "Can't parse oid %s: Inconsistent value", oid);
1175: case SNMP_ERROR_RESUNAVAIL:
1176: errx(1, "Can't parse oid %s: Resource unavailable", oid);
1177: case SNMP_ERROR_COMMITFAILED:
1178: errx(1, "Can't parse oid %s: Commit failed", oid);
1179: case SNMP_ERROR_UNDOFAILED:
1180: errx(1, "Can't parse oid %s: Undo faild", oid);
1181: case SNMP_ERROR_AUTHERROR:
1182: errx(1, "Can't parse oid %s: Authorization error", oid);
1183: case SNMP_ERROR_NOTWRITABLE:
1184: errx(1, "Can't parse oid %s: Not writable", oid);
1185: case SNMP_ERROR_INCONNAME:
1186: errx(1, "Can't parse oid %s: Inconsistent name", oid);
1187: }
1188: errx(1, "Can't parse oid %s: Unknown error (%d)", oid, error);
1189: }
1190:
1191: int
1192: snmpc_parseagent(char *agent, char *defaultport)
1193: {
1194: struct addrinfo hints, *ai, *ai0 = NULL;
1195: struct sockaddr_un saddr;
1196: char *agentdup, *specifier, *hostname, *port = NULL;
1197: int error;
1198: int s;
1199:
1200: if ((agentdup = specifier = strdup(agent)) == NULL)
1201: err(1, NULL);
1202:
1203: bzero(&hints, sizeof(hints));
1204: if ((hostname = strchr(specifier, ':')) != NULL) {
1205: *hostname++ = '\0';
1206: if (strcasecmp(specifier, "udp") == 0) {
1207: hints.ai_family = AF_INET;
1208: hints.ai_socktype = SOCK_DGRAM;
1209: } else if (strcasecmp(specifier, "tcp") == 0) {
1210: hints.ai_family = AF_INET;
1211: hints.ai_socktype = SOCK_STREAM;
1212: } else if (strcasecmp(specifier, "udp6") == 0 ||
1213: strcasecmp(specifier, "udpv6") == 0 ||
1214: strcasecmp(specifier, "udpipv6") == 0) {
1215: hints.ai_family = AF_INET6;
1216: hints.ai_socktype = SOCK_DGRAM;
1217: } else if (strcasecmp(specifier, "tcp6") == 0 ||
1218: strcasecmp(specifier, "tcpv6") == 0 ||
1219: strcasecmp(specifier, "tcpipv6") == 0) {
1220: hints.ai_family = AF_INET6;
1221: hints.ai_socktype = SOCK_STREAM;
1222: } else if (strcasecmp(specifier, "unix") == 0) {
1223: hints.ai_family = AF_UNIX;
1224: hints.ai_addr = (struct sockaddr *)&saddr;
1225: hints.ai_addrlen = sizeof(saddr);
1226: saddr.sun_len = sizeof(saddr);
1227: saddr.sun_family = AF_UNIX;
1228: if (strlcpy(saddr.sun_path, hostname,
1229: sizeof(saddr.sun_path)) > sizeof(saddr.sun_path))
1230: errx(1, "Hostname path too long");
1231: ai = &hints;
1232: } else {
1.22 martijn 1233: *--hostname = ':';
1.1 martijn 1234: hostname = specifier;
1235: }
1236: } else {
1237: hostname = specifier;
1.22 martijn 1238: }
1239:
1240: if (hints.ai_family == AF_INET) {
1241: if ((port = strchr(hostname, ':')) != NULL)
1242: *port++ = '\0';
1243: } else if (hints.ai_family == AF_INET6 || hints.ai_family == 0) {
1244: if (hostname[0] == '[') {
1245: hints.ai_family = AF_INET6;
1246: hostname++;
1247: if ((port = strchr(hostname, ']')) == NULL)
1248: errx(1, "invalid agent");
1249: *port++ = '\0';
1250: if (port[0] == ':')
1251: *port++ = '\0';
1252: else if (port[0] == '\0')
1253: port = NULL;
1254: else
1255: errx(1, "invalid agent");
1256: } else {
1257: if ((port = strrchr(hostname, ':')) != NULL)
1258: *port++ = '\0';
1259: }
1.1 martijn 1260: }
1261:
1262: if (hints.ai_family != AF_UNIX) {
1.22 martijn 1263: if (hints.ai_socktype == 0)
1264: hints.ai_socktype = SOCK_DGRAM;
1.1 martijn 1265: if (port == NULL)
1266: port = defaultport;
1267: error = getaddrinfo(hostname, port, &hints, &ai0);
1.22 martijn 1268: if (error) {
1.27 martijn 1269: if (error != EAI_NODATA || port == defaultport)
1.22 martijn 1270: errx(1, "%s", gai_strerror(error));
1271: *--port = ':';
1272: error = getaddrinfo(hostname, defaultport, &hints,
1273: &ai0);
1274: if (error)
1275: errx(1, "%s", gai_strerror(error));
1276: }
1.1 martijn 1277: s = -1;
1278: for (ai = ai0; ai != NULL; ai = ai->ai_next) {
1279: if ((s = socket(ai->ai_family, ai->ai_socktype,
1.22 martijn 1280: ai->ai_protocol)) != -1 &&
1281: connect(s, (struct sockaddr *)ai->ai_addr,
1282: ai->ai_addrlen) != -1)
1283: break;
1.27 martijn 1284: close(s);
1285: s = -1;
1.1 martijn 1286: }
1.22 martijn 1287: } else {
1288: s = socket(AF_UNIX, SOCK_STREAM, 0);
1289: if (connect(s, (struct sockaddr *)ai->ai_addr,
1290: ai->ai_addrlen) == -1)
1291: err(1, "Can't connect to %s", agent);
1292: }
1.1 martijn 1293: if (s == -1)
1.22 martijn 1294: err(1, "Can't connect to agent %s", agent);
1.1 martijn 1295:
1296:
1297: if (ai0 != NULL)
1298: freeaddrinfo(ai0);
1299: free(agentdup);
1300: return s;
1301: }
1302:
1.9 martijn 1303: char *
1304: snmpc_hex2bin(char *hexstr, size_t *binlen)
1305: {
1306: char *decstr;
1307:
1308: if (hexstr[0] == '0' && hexstr[1] == 'x')
1309: hexstr += 2;
1310: while (hexstr[0] == ' ' || hexstr[0] == '\t')
1311: hexstr++;
1312:
1313: if ((decstr = malloc((strlen(hexstr) / 2) + 1)) == NULL)
1314: return NULL;
1315:
1316: for (*binlen = 0; hexstr[0] != '\0'; (*binlen)++) {
1317: hexstr[0] = toupper(hexstr[0]);
1318: hexstr[1] = toupper(hexstr[1]);
1319: if (hexstr[0] >= '0' && hexstr[0] <= '9')
1320: decstr[*binlen] = (hexstr[0] - '0') << 4;
1321: else if (hexstr[0] >= 'A' && hexstr[0] <= 'F')
1322: decstr[*binlen] = ((hexstr[0] - 'A') + 10) << 4;
1323: else
1324: goto fail;
1325: if (hexstr[1] >= '0' && hexstr[1] <= '9')
1326: decstr[*binlen] |= (hexstr[1] - '0');
1327: else if (hexstr[1] >= 'A' && hexstr[1] <= 'F')
1328: decstr[*binlen] |= (hexstr[1] - 'A') + 10;
1329: else
1330: goto fail;
1331:
1332: hexstr += 2;
1333: while (hexstr[0] == ' ' || hexstr[0] == '\t')
1334: hexstr++;
1335: }
1336:
1337: return decstr;
1338: fail:
1339: errno = EINVAL;
1340: free(decstr);
1341: return NULL;
1.29 ! martijn 1342: }
! 1343:
! 1344: ssize_t
! 1345: snmpc_mbswidth(char *str)
! 1346: {
! 1347: wchar_t wc;
! 1348: size_t width = 0;
! 1349: size_t i;
! 1350: int len;
! 1351:
! 1352: for (i = 0; (len = mbtowc(&wc, &(str[i]), MB_CUR_MAX)) != 0; i += len) {
! 1353: if (len == -1) {
! 1354: mbtowc(NULL, NULL, MB_CUR_MAX);
! 1355: return -1;
! 1356: }
! 1357: width += wcwidth(wc);
! 1358: }
! 1359: return width;
1.13 martijn 1360: }
1361:
1362: struct ber_element *
1363: snmpc_varbindparse(int argc, char *argv[])
1364: {
1365: struct ber_oid oid, oidval;
1366: struct in_addr addr4;
1367: char *addr = (char *)&addr4;
1368: char *str = NULL, *tmpstr, *endstr;
1369: const char *errstr = NULL;
1370: struct ber_element *varbind = NULL, *vblist = NULL;
1371: int i, ret;
1372: size_t strl, byte;
1373: long long lval;
1374:
1375: if (argc % 3 != 0)
1376: usage();
1377: for (i = 0; i < argc; i += 3) {
1378: if (smi_string2oid(argv[i], &oid) == -1)
1379: errx(1, "Invalid oid: %s\n", argv[i]);
1380: switch (argv[i + 1][0]) {
1381: case 'a':
1382: ret = inet_pton(AF_INET, argv[i + 2], &addr4);
1383: if (ret == -1)
1384: err(1, "inet_pton");
1385: if (ret == 0)
1386: errx(1, "%s: Bad value notation (%s)", argv[i],
1387: argv[i + 2]);
1.16 tb 1388: if ((varbind = ober_printf_elements(varbind, "{Oxt}",
1.13 martijn 1389: &oid, addr, sizeof(addr4), BER_CLASS_APPLICATION,
1390: SNMP_T_IPADDR)) == NULL)
1.16 tb 1391: err(1, "ober_printf_elements");
1.13 martijn 1392: break;
1393: case 'b':
1394: tmpstr = argv[i + 2];
1395: strl = 0;
1396: do {
1397: lval = strtoll(tmpstr, &endstr, 10);
1398: if (endstr[0] != ' ' && endstr[0] != '\t' &&
1399: endstr[0] != ',' && endstr[0] != '\0')
1400: errx(1, "%s: Bad value notation (%s)",
1401: argv[i], argv[i + 2]);
1402: if (tmpstr == endstr) {
1403: tmpstr++;
1404: continue;
1405: }
1406: if (lval < 0)
1407: errx(1, "%s: Bad value notation (%s)",
1408: argv[i], argv[i + 2]);
1409: byte = lval / 8;
1410: if (byte >= strl) {
1411: if ((str = recallocarray(str, strl,
1412: byte + 1, 1)) == NULL)
1413: err(1, "malloc");
1414: strl = byte + 1;
1415: }
1416: str[byte] |= 0x80 >> (lval % 8);
1417: tmpstr = endstr + 1;
1418: } while (endstr[0] != '\0');
1419: /*
1420: * RFC3416 Section 2.5
1421: * A BITS value is encoded as an OCTET STRING
1422: */
1423: goto pastestring;
1424: case 'c':
1425: lval = strtonum(argv[i + 2], INT32_MIN, INT32_MAX,
1426: &errstr);
1427: if (errstr != NULL)
1428: errx(1, "%s: Bad value notation (%s)", argv[i],
1429: argv[i + 2]);
1.16 tb 1430: if ((varbind = ober_printf_elements(varbind, "{Oit}",
1.13 martijn 1431: &oid, lval, BER_CLASS_APPLICATION,
1432: SNMP_T_COUNTER32)) == NULL)
1.16 tb 1433: err(1, "ober_printf_elements");
1.13 martijn 1434: break;
1435: case 'd':
1436: /* String always shrinks */
1437: if ((str = malloc(strlen(argv[i + 2]))) == NULL)
1438: err(1, "malloc");
1439: tmpstr = argv[i + 2];
1440: strl = 0;
1441: do {
1442: lval = strtoll(tmpstr, &endstr, 10);
1443: if (endstr[0] != ' ' && endstr[0] != '\t' &&
1444: endstr[0] != '\0')
1445: errx(1, "%s: Bad value notation (%s)",
1446: argv[i], argv[i + 2]);
1447: if (tmpstr == endstr) {
1448: tmpstr++;
1449: continue;
1450: }
1451: if (lval < 0 || lval > 0xff)
1452: errx(1, "%s: Bad value notation (%s)",
1453: argv[i], argv[i + 2]);
1454: str[strl++] = (unsigned char) lval;
1455: tmpstr = endstr + 1;
1456: } while (endstr[0] != '\0');
1457: goto pastestring;
1458: case 'u':
1459: case 'i':
1460: lval = strtonum(argv[i + 2], LLONG_MIN, LLONG_MAX,
1461: &errstr);
1462: if (errstr != NULL)
1463: errx(1, "%s: Bad value notation (%s)", argv[i],
1464: argv[i + 2]);
1.16 tb 1465: if ((varbind = ober_printf_elements(varbind, "{Oi}",
1.13 martijn 1466: &oid, lval)) == NULL)
1.16 tb 1467: err(1, "ober_printf_elements");
1.13 martijn 1468: break;
1469: case 'n':
1.16 tb 1470: if ((varbind = ober_printf_elements(varbind, "{O0}",
1.13 martijn 1471: &oid)) == NULL)
1.16 tb 1472: err(1, "ober_printf_elements");
1.13 martijn 1473: break;
1474: case 'o':
1475: if (smi_string2oid(argv[i + 2], &oidval) == -1)
1476: errx(1, "%s: Unknown Object Identifier (Sub-id "
1477: "not found: (top) -> %s)", argv[i],
1478: argv[i + 2]);
1.16 tb 1479: if ((varbind = ober_printf_elements(varbind, "{OO}",
1.13 martijn 1480: &oid, &oidval)) == NULL)
1.16 tb 1481: err(1, "ober_printf_elements");
1.13 martijn 1482: break;
1483: case 's':
1484: if ((str = strdup(argv[i + 2])) == NULL)
1485: err(1, NULL);
1486: strl = strlen(argv[i + 2]);
1487: pastestring:
1.16 tb 1488: if ((varbind = ober_printf_elements(varbind, "{Ox}",
1.13 martijn 1489: &oid, str, strl)) == NULL)
1.16 tb 1490: err(1, "ober_printf_elements");
1.13 martijn 1491: free(str);
1492: break;
1493: case 't':
1494: lval = strtonum(argv[i + 2], LLONG_MIN, LLONG_MAX,
1495: &errstr);
1496: if (errstr != NULL)
1497: errx(1, "%s: Bad value notation (%s)", argv[i],
1498: argv[i + 2]);
1.16 tb 1499: if ((varbind = ober_printf_elements(varbind, "{Oit}",
1.13 martijn 1500: &oid, lval, BER_CLASS_APPLICATION,
1501: SNMP_T_TIMETICKS)) == NULL)
1.16 tb 1502: err(1, "ober_printf_elements");
1.13 martijn 1503: break;
1504: case 'x':
1505: /* String always shrinks */
1506: if ((str = malloc(strlen(argv[i + 2]))) == NULL)
1507: err(1, "malloc");
1508: tmpstr = argv[i + 2];
1509: strl = 0;
1510: do {
1511: lval = strtoll(tmpstr, &endstr, 16);
1512: if (endstr[0] != ' ' && endstr[0] != '\t' &&
1513: endstr[0] != '\0')
1514: errx(1, "%s: Bad value notation (%s)",
1515: argv[i], argv[i + 2]);
1516: if (tmpstr == endstr) {
1517: tmpstr++;
1518: continue;
1519: }
1520: if (lval < 0 || lval > 0xff)
1521: errx(1, "%s: Bad value notation (%s)",
1522: argv[i], argv[i + 2]);
1523: str[strl++] = (unsigned char) lval;
1524: tmpstr = endstr + 1;
1525: } while (endstr[0] != '\0');
1526: goto pastestring;
1527: default:
1528: usage();
1529: }
1530: if (vblist == NULL)
1531: vblist = varbind;
1532: }
1533:
1534: return vblist;
1.9 martijn 1535: }
1536:
1.1 martijn 1537: __dead void
1538: usage(void)
1539: {
1540: size_t i;
1541:
1542: if (snmp_app != NULL) {
1.9 martijn 1543: fprintf(stderr, "usage: snmp %s%s%s\n",
1.4 martijn 1544: snmp_app->name,
1.1 martijn 1545: snmp_app->usecommonopt ?
1.10 martijn 1546: " [-A authpass] [-a digest] [-c community] [-e secengineid]\n"
1.11 martijn 1547: " [-E ctxengineid] [-K localpriv] [-k localauth] [-l seclevel]\n"
1548: " [-n ctxname] [-O afnqvxSQ] [-r retries] [-t timeout] [-u user]\n"
1549: " [-v version] [-X privpass] [-x cipher] [-Z boots,time]\n"
1.9 martijn 1550: " " : "",
1.1 martijn 1551: snmp_app->usage == NULL ? "" : snmp_app->usage);
1552: exit(1);
1553: }
1554: for (i = 0; i < (sizeof(snmp_apps)/sizeof(*snmp_apps)); i++) {
1.4 martijn 1555: if (i == 0)
1556: fprintf(stderr, "usage: ");
1557: else
1558: fprintf(stderr, " ");
1559: fprintf(stderr, "snmp %s%s %s\n",
1560: snmp_apps[i].name,
1.1 martijn 1561: snmp_apps[i].usecommonopt ?
1.17 martijn 1562: " [options]" : "",
1.4 martijn 1563: snmp_apps[i].usage ? snmp_apps[i].usage : "");
1.1 martijn 1564: }
1565: exit(1);
1566: }