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1.32 ! jsg 1: /* $OpenBSD: snmpc.c,v 1.31 2020/12/02 15:45:51 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 },
1.30 martijn 83: { "mibtree", 0, "O:", "[-O fnS] [oid ...]", 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: time = strtoll(strtolp, &strtolp, 10);
460: if (boots < 0 || strtolp == optarg)
461: usage();
462: zflag = 1;
463: break;
1.1 martijn 464: default:
465: usage();
466: }
467: }
468: argc -= optind;
469: argv += optind;
470:
1.9 martijn 471: if (version == SNMP_V3) {
472: /* Setup USM */
473: if (user == NULL || user[0] == '\0')
474: errx(1, "No securityName specified");
475: if ((sec = usm_init(user, strlen(user))) == NULL)
476: err(1, "usm_init");
1.10 martijn 477: if (seclevel & SNMP_MSGFLAG_AUTH) {
478: if (md == NULL)
479: md = EVP_md5();
480: if (authkey == NULL)
481: errx(1, "No authKey or authPassword specified");
482: if (usm_setauth(sec, md, authkey, authkeylen,
483: authkeylevel) == -1)
484: err(1, "Can't set authkey");
485: }
1.11 martijn 486: if (seclevel & SNMP_MSGFLAG_PRIV) {
487: if (cipher == NULL)
488: cipher = EVP_des_cbc();
489: if (privkey == NULL)
490: errx(1, "No privKey or privPassword specified");
491: if (usm_setpriv(sec, cipher, privkey, privkeylen,
492: privkeylevel) == -1)
493: err(1, "Can't set authkey");
494: }
1.9 martijn 495: if (secengineid != NULL) {
496: if (usm_setengineid(sec, secengineid,
497: secengineidlen) == -1)
498: err(1, "Can't set secengineid");
499: }
500: if (zflag)
501: if (usm_setbootstime(sec, boots, time) == -1)
502: err(1, "Can't set boots/time");
503: v3 = snmp_v3_init(seclevel, ctxname, ctxname == NULL ? 0 :
504: strlen(ctxname), sec);
505: if (v3 == NULL)
506: err(1, "snmp_v3_init");
507: if (ctxengineid != NULL) {
508: if (snmp_v3_setengineid(v3, ctxengineid,
509: ctxengineidlen) == -1)
510: err(1, "Can't set ctxengineid");
511: }
512: }
513:
514:
1.1 martijn 515: return snmp_app->exec(argc, argv);
516: }
517:
518: int
519: snmpc_get(int argc, char *argv[])
520: {
521: struct ber_oid *oid;
522: struct ber_element *pdu, *varbind;
523: struct snmp_agent *agent;
524: int errorstatus, errorindex;
525: int i;
1.9 martijn 526: int class;
527: unsigned type;
1.15 martijn 528: char *hint = NULL;
1.1 martijn 529:
530: if (argc < 2)
531: usage();
532:
1.8 martijn 533: if ((agent = snmpc_connect(argv[0], "161")) == NULL)
1.1 martijn 534: err(1, "%s", snmp_app->name);
535: agent->timeout = timeout;
536: agent->retries = retries;
537:
538: if (pledge("stdio", NULL) == -1)
539: err(1, "pledge");
540: argc--;
541: argv++;
542:
543: oid = reallocarray(NULL, argc, sizeof(*oid));
1.3 deraadt 544: if (oid == NULL)
545: err(1, "malloc");
1.1 martijn 546: for (i = 0; i < argc; i++) {
547: if (smi_string2oid(argv[i], &oid[i]) == -1)
1.12 semarie 548: errx(1, "%s: Unknown object identifier", argv[i]);
1.1 martijn 549: }
550: if (strcmp(snmp_app->name, "getnext") == 0) {
551: if ((pdu = snmp_getnext(agent, oid, argc)) == NULL)
552: err(1, "getnext");
553: } else if (strcmp(snmp_app->name, "bulkget") == 0) {
554: if (version < SNMP_V2C)
555: errx(1, "Cannot send V2 PDU on V1 session");
556: if (non_repeaters > argc)
557: errx(1, "need more objects than -Cn<num>");
558: if ((pdu = snmp_getbulk(agent, oid, argc, non_repeaters,
559: max_repetitions)) == NULL)
560: err(1, "bulkget");
561: } else {
562: if ((pdu = snmp_get(agent, oid, argc)) == NULL)
563: err(1, "get");
564: }
565:
1.16 tb 566: (void) ober_scanf_elements(pdu, "t{Sdd{e", &class, &type, &errorstatus,
1.9 martijn 567: &errorindex, &varbind);
1.15 martijn 568: if (errorstatus != 0) {
569: if (errorindex >= 1 && errorindex <= argc)
570: hint = argv[errorindex - 1];
571: snmpc_printerror((enum snmp_error) errorstatus, varbind,
572: errorindex, hint);
573: }
1.1 martijn 574:
1.9 martijn 575: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT)
576: printf("Received report:\n");
1.1 martijn 577: for (; varbind != NULL; varbind = varbind->be_next) {
578: if (!snmpc_print(varbind))
579: err(1, "Can't print response");
580: }
1.16 tb 581: ober_free_elements(pdu);
1.1 martijn 582: snmp_free_agent(agent);
583: return 0;
584: }
585:
586: int
587: snmpc_walk(int argc, char *argv[])
588: {
589: struct ber_oid oid, loid, noid;
590: struct ber_element *pdu, *varbind, *value;
591: struct timespec start, finish;
592: struct snmp_agent *agent;
593: const char *oids;
1.18 martijn 594: int n = 0, prev_cmp, skip_cmp;
1.1 martijn 595: int errorstatus, errorindex;
1.9 martijn 596: int class;
1.18 martijn 597: size_t i;
1.9 martijn 598: unsigned type;
1.1 martijn 599:
600: if (strcmp(snmp_app->name, "bulkwalk") == 0 && version < SNMP_V2C)
601: errx(1, "Cannot send V2 PDU on V1 session");
602: if (argc < 1 || argc > 2)
603: usage();
604: oids = argc == 1 ? mib : argv[1];
605:
1.8 martijn 606: if ((agent = snmpc_connect(argv[0], "161"))== NULL)
1.1 martijn 607: err(1, "%s", snmp_app->name);
608: agent->timeout = timeout;
609: agent->retries = retries;
610: if (pledge("stdio", NULL) == -1)
611: err(1, "pledge");
612:
613: if (smi_string2oid(oids, &oid) == -1)
614: errx(1, "%s: Unknown object identifier", oids);
615: bcopy(&oid, &noid, sizeof(noid));
616: if (print_time)
617: clock_gettime(CLOCK_MONOTONIC, &start);
618:
619: if (walk_include_oid) {
620: if ((pdu = snmp_get(agent, &oid, 1)) == NULL)
621: err(1, "%s", snmp_app->name);
622:
1.16 tb 623: (void) ober_scanf_elements(pdu, "t{Sdd{e", &class, &type,
1.9 martijn 624: &errorstatus, &errorindex, &varbind);
1.1 martijn 625: if (errorstatus != 0)
1.15 martijn 626: snmpc_printerror((enum snmp_error) errorstatus, varbind,
627: errorindex, oids);
1.1 martijn 628:
1.9 martijn 629: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT)
630: printf("Received report:\n");
1.1 martijn 631: if (!snmpc_print(varbind))
632: err(1, "Can't print response");
1.16 tb 633: ober_free_element(pdu);
1.9 martijn 634: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT)
635: return 1;
1.1 martijn 636: n++;
637: }
638: while (1) {
1.18 martijn 639: for (i = 0; i < walk_skip_len; i++) {
640: skip_cmp = ober_oid_cmp(&(walk_skip[i]), &noid);
641: if (skip_cmp == 0 || skip_cmp == 2) {
642: bcopy(&(walk_skip[i]), &noid, sizeof(noid));
643: noid.bo_id[noid.bo_n -1]++;
644: break;
645: }
646: }
1.1 martijn 647: bcopy(&noid, &loid, sizeof(loid));
648: if (strcmp(snmp_app->name, "bulkwalk") == 0) {
649: if ((pdu = snmp_getbulk(agent, &noid, 1,
650: non_repeaters, max_repetitions)) == NULL)
651: err(1, "bulkwalk");
652: } else {
653: if ((pdu = snmp_getnext(agent, &noid, 1)) == NULL)
654: err(1, "walk");
655: }
656:
1.16 tb 657: (void) ober_scanf_elements(pdu, "t{Sdd{e", &class, &type,
1.9 martijn 658: &errorstatus, &errorindex, &varbind);
1.1 martijn 659: if (errorstatus != 0) {
1.15 martijn 660: snmpc_printerror((enum snmp_error) errorstatus, varbind,
661: errorindex, NULL);
1.1 martijn 662: }
663:
1.9 martijn 664: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT)
665: printf("Received report:\n");
1.2 deraadt 666: for (; varbind != NULL; varbind = varbind->be_next) {
1.16 tb 667: (void) ober_scanf_elements(varbind, "{oe}", &noid,
1.1 martijn 668: &value);
669: if (value->be_class == BER_CLASS_CONTEXT &&
670: value->be_type == BER_TYPE_EOC)
671: break;
1.18 martijn 672: for (i = 0; i < walk_skip_len; i++) {
673: skip_cmp = ober_oid_cmp(&(walk_skip[i]), &noid);
674: if (skip_cmp == 0 || skip_cmp == 2)
675: break;
676: }
677: if (i < walk_skip_len)
678: continue;
1.16 tb 679: prev_cmp = ober_oid_cmp(&loid, &noid);
1.1 martijn 680: if (walk_check_increase && prev_cmp == -1)
681: errx(1, "OID not increasing");
1.16 tb 682: if (prev_cmp == 0 || ober_oid_cmp(&oid, &noid) != 2)
1.1 martijn 683: break;
684: if (walk_end.bo_n != 0 &&
1.16 tb 685: ober_oid_cmp(&walk_end, &noid) != -1)
1.1 martijn 686: break;
687:
688: if (!snmpc_print(varbind))
689: err(1, "Can't print response");
690: n++;
691: }
1.16 tb 692: ober_free_elements(pdu);
1.9 martijn 693: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT)
694: return 1;
1.1 martijn 695: if (varbind != NULL)
696: break;
697: }
698: if (walk_fallback_oid && n == 0) {
699: if ((pdu = snmp_get(agent, &oid, 1)) == NULL)
700: err(1, "%s", snmp_app->name);
701:
1.16 tb 702: (void) ober_scanf_elements(pdu, "t{Sdd{e", &class, &type,
1.9 martijn 703: &errorstatus, &errorindex, &varbind);
1.1 martijn 704: if (errorstatus != 0)
1.15 martijn 705: snmpc_printerror((enum snmp_error) errorstatus, varbind,
706: errorindex, oids);
1.1 martijn 707:
1.9 martijn 708: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT)
709: printf("Received report:\n");
1.1 martijn 710: if (!snmpc_print(varbind))
711: err(1, "Can't print response");
1.16 tb 712: ober_free_element(pdu);
1.9 martijn 713: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT)
714: return 1;
1.1 martijn 715: n++;
716: }
717: if (print_time)
718: clock_gettime(CLOCK_MONOTONIC, &finish);
719: if (print_summary)
720: printf("Variables found: %d\n", n);
721: if (print_time) {
722: if ((finish.tv_nsec -= start.tv_nsec) < 0) {
723: finish.tv_sec -= 1;
724: finish.tv_nsec += 1000000000;
725: }
726: finish.tv_sec -= start.tv_sec;
727: fprintf(stderr, "Total traversal time: %lld.%09ld seconds\n",
728: finish.tv_sec, finish.tv_nsec);
729: }
730: snmp_free_agent(agent);
731: return 0;
732: }
733:
734: int
1.13 martijn 735: snmpc_set(int argc, char *argv[])
736: {
737: struct snmp_agent *agent;
738: struct ber_element *pdu, *varbind;
739: int errorstatus, errorindex;
740: int class;
741: unsigned type;
1.15 martijn 742: char *hint = NULL;
1.13 martijn 743:
744: if (argc < 4)
745: usage();
746: if ((agent = snmpc_connect(argv[0], "161")) == NULL)
747: err(1, "%s", snmp_app->name);
748: argc--;
749: argv++;
750:
751: if (pledge("stdio", NULL) == -1)
752: err(1, "pledge");
753:
1.15 martijn 754: if ((pdu = snmp_set(agent, snmpc_varbindparse(argc, argv))) == NULL)
755: err(1, "set");
1.13 martijn 756:
1.16 tb 757: (void) ober_scanf_elements(pdu, "t{Sdd{e", &class, &type, &errorstatus,
1.13 martijn 758: &errorindex, &varbind);
1.15 martijn 759: if (errorstatus != 0) {
760: if (errorindex >= 1 && errorindex <= argc / 3)
761: hint = argv[(errorindex - 1) * 3];
762: snmpc_printerror((enum snmp_error) errorstatus, varbind,
763: errorindex, hint);
764: }
1.13 martijn 765:
766: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT)
767: printf("Received report:\n");
768: for (; varbind != NULL; varbind = varbind->be_next) {
769: if (!snmpc_print(varbind))
770: err(1, "Can't print response");
771: }
1.16 tb 772: ober_free_elements(pdu);
1.13 martijn 773: snmp_free_agent(agent);
774: return 0;
775: }
776:
777: int
1.1 martijn 778: snmpc_trap(int argc, char *argv[])
779: {
780: struct snmp_agent *agent;
781: struct timespec ts;
1.13 martijn 782: struct ber_oid trapoid;
1.1 martijn 783: const char *errstr = NULL;
784: long long lval;
785:
786: if (version == SNMP_V1)
787: errx(1, "trap is not supported for snmp v1");
1.31 martijn 788:
789: if (argc < 3)
790: usage();
1.1 martijn 791:
1.8 martijn 792: if ((agent = snmpc_connect(argv[0], "162")) == NULL)
1.1 martijn 793: err(1, "%s", snmp_app->name);
794:
795: if (pledge("stdio", NULL) == -1)
796: err(1, "pledge");
797:
798: if (argv[1][0] == '\0') {
799: if (clock_gettime(CLOCK_UPTIME, &ts) == -1)
800: err(1, "clock_gettime");
801: } else {
802: lval = strtonum(argv[1], 0, LLONG_MAX, &errstr);
803: if (errstr != NULL)
804: errx(1, "Bad value notation (%s)", argv[1]);
805: ts.tv_sec = lval / 100;
806: ts.tv_nsec = (lval % 100) * 10000000;
807: }
808: if (smi_string2oid(argv[2], &trapoid) == -1)
809: errx(1, "Invalid oid: %s\n", argv[2]);
810:
811: argc -= 3;
812: argv += 3;
813:
1.13 martijn 814: snmp_trap(agent, &ts, &trapoid, snmpc_varbindparse(argc, argv));
1.19 martijn 815:
816: return 0;
817: }
818:
819: #define INCR_NEXTTAB(x) ((x + 8) & ~7)
820: #define NEXTTAB(x) (8 - (x & 7))
821: int
822: snmpc_df(int argc, char *argv[])
823: {
824: struct snmpc_df {
825: uint32_t index;
1.29 martijn 826: char *descr;
827: int descrwidth;
1.19 martijn 828: /* Theoretical maximum for 2 32 bit values multiplied */
829: char size[21];
830: char used[21];
831: char avail[21];
832: char proc[5];
833: } *df = NULL;
834: struct ber_oid descroid = {{ 1, 3, 6, 1, 2, 1, 25, 2, 3, 1, 3 }, 11};
835: struct ber_oid unitsoid = {{ 1, 3, 6, 1, 2, 1, 25, 2, 3, 1, 4 }, 11};
836: struct ber_oid sizeoid = {{ 1, 3, 6, 1, 2, 1, 25, 2, 3, 1, 5 }, 11};
837: struct ber_oid usedoid = {{ 1, 3, 6, 1, 2, 1, 25, 2, 3, 1, 6 }, 11};
838: struct ber_oid oid, *reqoid;
1.29 martijn 839: char oids[SNMP_MAX_OID_STRLEN];
840: struct ber_element *pdu, *varbind, *elm;
1.19 martijn 841: struct snmp_agent *agent;
842: int errorstatus, errorindex;
843: int class;
844: size_t i, j, rows = 0;
845: unsigned type;
846: char *string;
847: int descrlen = 0, sizelen = 0, usedlen = 0, availlen = 0, proclen = 0;
848: int len;
849: long long units, size, used;
850: int fmtret;
851:
852: if (argc != 1)
853: usage();
854:
855: if ((agent = snmpc_connect(argv[0], "161")) == NULL)
856: err(1, "%s", snmp_app->name);
857: agent->timeout = timeout;
858: agent->retries = retries;
859:
860: if (pledge("stdio", NULL) == -1)
861: err(1, "pledge");
862:
863: descrlen = sizeof("Description") - 1;
864: sizelen = sizeof("Size") - 1;
865: usedlen = sizeof("Used") - 1;
866: availlen = sizeof("Available") - 1;
867: proclen = sizeof("Used%") - 1;
868:
869: bcopy(&descroid, &oid, sizeof(descroid));
870:
871: i = 0;
872: while(1) {
873: if (version < SNMP_V2C) {
874: if ((pdu = snmp_getnext(agent, &oid, 1)) == NULL)
875: err(1, "df");
876: } else {
877: if ((pdu = snmp_getbulk(agent, &oid, 1, 0,
878: max_repetitions)) == NULL)
879: err(1, "df");
880: }
881:
882: (void) ober_scanf_elements(pdu, "t{Sdd{e", &class, &type,
883: &errorstatus, &errorindex, &varbind);
884: if (errorstatus != 0)
885: snmpc_printerror((enum snmp_error) errorstatus, varbind,
886: errorindex, NULL);
887:
888: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT) {
889: printf("Received report:\n");
890: for (; varbind != NULL; varbind = varbind->be_next) {
891: if (!snmpc_print(varbind))
892: err(1, "Can't print response");
893: }
894: return 1;
895: }
896: for (; varbind != NULL; varbind = varbind->be_next) {
1.29 martijn 897: if (ober_scanf_elements(varbind, "{os", &oid,
898: &string) == -1 ||
899: ober_oid_cmp(&descroid, &oid) != 2)
1.19 martijn 900: break;
901: rows++;
902: }
903: if ((df = reallocarray(df, rows, sizeof(*df))) == NULL)
904: err(1, "malloc");
905: (void) ober_scanf_elements(pdu, "{SSS{e", &varbind);
906: for (; i < rows; varbind = varbind->be_next, i++) {
1.29 martijn 907: if (ober_scanf_elements(varbind, "{oe", &oid,
908: &elm) == -1) {
1.19 martijn 909: i--;
910: rows--;
911: continue;
912: }
1.29 martijn 913: if (ober_oid_cmp(&descroid, &oid) != 2)
914: break;
1.19 martijn 915: df[i].index = oid.bo_id[oid.bo_n - 1];
1.29 martijn 916: if ((df[i].descr = smi_print_element(&oid, elm, 0,
917: smi_os_ascii, 0, utf8)) == NULL) {
918: smi_oid2string(&oid, oids, sizeof(oids),
919: oid_lookup);
920: warn("df: can't print oid %s", oids);
921: i--;
922: rows--;
923: continue;
924: }
925: if ((df[i].descrwidth =
926: (int) snmpc_mbswidth(df[i].descr)) == -1)
927: err(1, "df: invalid hrStorageDescr");
928: if (df[i].descrwidth > descrlen)
929: descrlen = df[i].descrwidth;
1.19 martijn 930: }
931: ober_free_elements(pdu);
932: if (varbind != NULL)
933: break;
934: }
935:
936: if (max_repetitions < 3)
937: max_repetitions = 3;
938: if ((reqoid = reallocarray(NULL, max_repetitions, sizeof(*reqoid))) == NULL)
939: err(1, "malloc");
940: for (i = 0; i < rows;) {
941: for (j = 0; i + j < rows && j < (size_t)max_repetitions / 3;
942: j++) {
943: bcopy(&unitsoid, &(reqoid[(j * 3) + 0]),
944: sizeof(unitsoid));
945: reqoid[(j * 3) + 0].bo_id[
946: reqoid[(j * 3) + 0].bo_n++] = df[i + j].index;
947: bcopy(&sizeoid, &(reqoid[(j * 3) + 1]),
948: sizeof(sizeoid));
949: reqoid[(j * 3) + 1].bo_id[
950: reqoid[(j * 3) + 1].bo_n++] = df[i + j].index;
951: bcopy(&usedoid, &(reqoid[(j * 3) + 2]),
952: sizeof(usedoid));
953: reqoid[(j * 3) + 2].bo_id[
954: reqoid[(j * 3) + 2].bo_n++] = df[i + j].index;
955: }
956: if ((pdu = snmp_get(agent, reqoid, j * 3)) == NULL)
957: err(1, "df");
958: (void) ober_scanf_elements(pdu, "t{Sdd{e", &class, &type,
959: &errorstatus, &errorindex, &varbind);
960: if (errorstatus != 0)
961: snmpc_printerror((enum snmp_error) errorstatus, varbind,
962: errorindex, NULL);
963: if (class == BER_CLASS_CONTEXT && type == SNMP_C_REPORT) {
964: printf("Received report:\n");
965: for (; varbind != NULL; varbind = varbind->be_next) {
966: if (!snmpc_print(varbind))
967: err(1, "Can't print response");
968: }
969: }
970: for (j = 0; varbind != NULL; i++) {
971: if (ober_scanf_elements(varbind, "{oi}{oi}{oi}",
972: &(reqoid[0]), &units, &(reqoid[1]), &size,
973: &(reqoid[2]), &used, &varbind) == -1) {
974: break;
975: }
976: varbind = varbind->be_next->be_next->be_next;
977:
978: unitsoid.bo_id[unitsoid.bo_n++] = df[i].index;
979: if (ober_oid_cmp(&unitsoid, &(reqoid[0])) != 0) {
980: warnx("df: received invalid object");
981: break;
982: }
983: unitsoid.bo_n--;
984: sizeoid.bo_id[sizeoid.bo_n++] = df[i].index;
985: if (ober_oid_cmp(&sizeoid, &(reqoid[1])) != 0) {
986: warnx("df: received invalid object");
987: break;
988: }
989: sizeoid.bo_n--;
990: usedoid.bo_id[usedoid.bo_n++] = df[i].index;
991: if (ober_oid_cmp(&usedoid, &(reqoid[2])) != 0) {
992: warnx("df: received invalid object");
993: break;
994: }
995: usedoid.bo_n--;
996: if (print_human)
997: fmtret = fmt_scaled((units * size), df[i].size);
998: if (!print_human || fmtret == -1)
999: snprintf(df[i].size, sizeof(df[i].size), "%lld",
1000: (units * size) / 1024);
1001: len = (int) strlen(df[i].size);
1002: if (len > sizelen)
1003: sizelen = len;
1004: if (print_human)
1005: fmtret = fmt_scaled(units * used, df[i].used);
1006: if (!print_human || fmtret == -1)
1007: snprintf(df[i].used, sizeof(df[i].used), "%lld",
1008: (units * used) / 1024);
1009: len = (int) strlen(df[i].used);
1010: if (len > usedlen)
1011: usedlen = len;
1012: if (print_human)
1013: fmtret = fmt_scaled(units * (size - used),
1014: df[i].avail);
1015: if (!print_human || fmtret == -1)
1016: snprintf(df[i].avail, sizeof(df[i].avail),
1017: "%lld", (units * (size - used)) / 1024);
1018: len = (int) strlen(df[i].avail);
1.23 martijn 1019: if (len > availlen)
1.19 martijn 1020: availlen = len;
1021: if (size == 0)
1022: strlcpy(df[i].proc, "0%", sizeof(df[i].proc));
1023: else {
1024: snprintf(df[i].proc, sizeof(df[i].proc),
1025: "%lld%%", (used * 100) / size);
1026: }
1027: len = (int) strlen(df[i].proc);
1028: if (len > proclen)
1029: proclen = len;
1030: j++;
1031: }
1032: if (j == 0) {
1033: warnx("Failed to retrieve information for %s",
1034: df[i].descr);
1035: memmove(df + i, df + i + 1,
1036: (rows - i - 1) * sizeof(*df));
1037: rows--;
1038: i--;
1039: }
1040: }
1041:
1042: printf("%-*s%*s%*s%*s%*s\n",
1043: descrlen, "Description",
1044: NEXTTAB(descrlen) + sizelen, "Size",
1045: NEXTTAB(sizelen) + usedlen, "Used",
1046: NEXTTAB(usedlen) + availlen, "Available",
1047: NEXTTAB(availlen) + proclen, "Used%");
1048: for (i = 0; i < rows; i++) {
1.29 martijn 1049: printf("%s%*s%*s%*s%*s%*s\n",
1050: df[i].descr, descrlen - df[i].descrwidth, "",
1.19 martijn 1051: NEXTTAB(descrlen) + sizelen, df[i].size,
1052: NEXTTAB(sizelen) + usedlen, df[i].used,
1053: NEXTTAB(usedlen) + availlen, df[i].avail,
1054: NEXTTAB(availlen) + proclen, df[i].proc);
1055: }
1.1 martijn 1056:
1057: return 0;
1058: }
1059:
1060: int
1061: snmpc_mibtree(int argc, char *argv[])
1062: {
1063: struct oid *oid;
1.30 martijn 1064: struct ber_oid soid;
1.1 martijn 1065: char buf[BUFSIZ];
1.30 martijn 1066: int i;
1.1 martijn 1067:
1.30 martijn 1068: if (argc == 0) {
1069: for (oid = NULL; (oid = smi_foreach(oid)) != NULL;) {
1070: smi_oid2string(&oid->o_id, buf, sizeof(buf),
1071: oid_lookup);
1072: printf("%s\n", buf);
1073: }
1074: } else {
1075: for (i = 0; i < argc; i++) {
1076: if (smi_string2oid(argv[i], &soid) == -1) {
1077: warnx("%s: Unknown object identifier", argv[i]);
1078: continue;
1079: }
1080: smi_oid2string(&soid, buf, sizeof(buf), oid_lookup);
1081: printf("%s\n", buf);
1082: }
1.1 martijn 1083: }
1084: return 0;
1.8 martijn 1085: }
1086:
1087: struct snmp_agent *
1088: snmpc_connect(char *host, char *port)
1089: {
1090: switch (version) {
1091: case SNMP_V1:
1092: case SNMP_V2C:
1093: return snmp_connect_v12(snmpc_parseagent(host, port), version,
1094: community);
1.9 martijn 1095: case SNMP_V3:
1096: return snmp_connect_v3(snmpc_parseagent(host, port), v3);
1.8 martijn 1097: }
1098: return NULL;
1.1 martijn 1099: }
1100:
1101: int
1102: snmpc_print(struct ber_element *elm)
1103: {
1104: struct ber_oid oid;
1105: char oids[SNMP_MAX_OID_STRLEN];
1106: char *value;
1107:
1108: elm = elm->be_sub;
1.16 tb 1109: if (ober_get_oid(elm, &oid) != 0) {
1.1 martijn 1110: errno = EINVAL;
1111: return 0;
1112: }
1113:
1114: elm = elm->be_next;
1.28 martijn 1115: value = smi_print_element(&oid, elm, smi_print_hint, output_string,
1116: oid_lookup, utf8);
1.1 martijn 1117: if (value == NULL)
1118: return 0;
1119:
1120: if (print_varbind_only)
1121: printf("%s\n", value);
1122: else if (print_equals) {
1123: smi_oid2string(&oid, oids, sizeof(oids), oid_lookup);
1124: printf("%s = %s\n", oids, value);
1125: } else {
1126: smi_oid2string(&oid, oids, sizeof(oids), oid_lookup);
1127: printf("%s %s\n", oids, value);
1128: }
1129: free(value);
1.2 deraadt 1130:
1.1 martijn 1131: return 1;
1132: }
1133:
1134: __dead void
1.15 martijn 1135: snmpc_printerror(enum snmp_error error, struct ber_element *varbind,
1136: int index, const char *hint)
1.1 martijn 1137: {
1.15 martijn 1138: struct ber_oid hoid, vboid;
1139: char oids[SNMP_MAX_OID_STRLEN];
1140: const char *oid = NULL;
1141: int i;
1142:
1143: if (index >= 1) {
1144: /* Only print if the index is in the reply */
1.26 martijn 1145: for (i = 1; varbind != NULL && i < index;
1.15 martijn 1146: varbind = varbind->be_next)
1147: i++;
1148: if (varbind != NULL &&
1.16 tb 1149: ober_get_oid(varbind->be_sub, &vboid) == 0) {
1.15 martijn 1150: /* If user and reply conform print user input */
1151: if (hint != NULL &&
1152: smi_string2oid(hint, &hoid) == 0 &&
1.16 tb 1153: ober_oid_cmp(&hoid, &vboid) == 0)
1.15 martijn 1154: oid = hint;
1155: else
1156: oid = smi_oid2string(&vboid, oids,
1157: sizeof(oids), oid_lookup);
1158: }
1159: }
1160: if (oid == NULL)
1161: oid = "?";
1162:
1.2 deraadt 1163: switch (error) {
1.1 martijn 1164: case SNMP_ERROR_NONE:
1165: errx(1, "No error, how did I get here?");
1166: case SNMP_ERROR_TOOBIG:
1167: errx(1, "Can't parse oid %s: Response too big", oid);
1168: case SNMP_ERROR_NOSUCHNAME:
1169: errx(1, "Can't parse oid %s: No such object", oid);
1170: case SNMP_ERROR_BADVALUE:
1171: errx(1, "Can't parse oid %s: Bad value", oid);
1172: case SNMP_ERROR_READONLY:
1173: errx(1, "Can't parse oid %s: Read only", oid);
1174: case SNMP_ERROR_GENERR:
1175: errx(1, "Can't parse oid %s: Generic error", oid);
1176: case SNMP_ERROR_NOACCESS:
1177: errx(1, "Can't parse oid %s: Access denied", oid);
1178: case SNMP_ERROR_WRONGTYPE:
1179: errx(1, "Can't parse oid %s: Wrong type", oid);
1180: case SNMP_ERROR_WRONGLENGTH:
1181: errx(1, "Can't parse oid %s: Wrong length", oid);
1182: case SNMP_ERROR_WRONGENC:
1183: errx(1, "Can't parse oid %s: Wrong encoding", oid);
1184: case SNMP_ERROR_WRONGVALUE:
1185: errx(1, "Can't parse oid %s: Wrong value", oid);
1186: case SNMP_ERROR_NOCREATION:
1187: errx(1, "Can't parse oid %s: Can't be created", oid);
1188: case SNMP_ERROR_INCONVALUE:
1189: errx(1, "Can't parse oid %s: Inconsistent value", oid);
1190: case SNMP_ERROR_RESUNAVAIL:
1191: errx(1, "Can't parse oid %s: Resource unavailable", oid);
1192: case SNMP_ERROR_COMMITFAILED:
1193: errx(1, "Can't parse oid %s: Commit failed", oid);
1194: case SNMP_ERROR_UNDOFAILED:
1195: errx(1, "Can't parse oid %s: Undo faild", oid);
1196: case SNMP_ERROR_AUTHERROR:
1197: errx(1, "Can't parse oid %s: Authorization error", oid);
1198: case SNMP_ERROR_NOTWRITABLE:
1199: errx(1, "Can't parse oid %s: Not writable", oid);
1200: case SNMP_ERROR_INCONNAME:
1201: errx(1, "Can't parse oid %s: Inconsistent name", oid);
1202: }
1203: errx(1, "Can't parse oid %s: Unknown error (%d)", oid, error);
1204: }
1205:
1206: int
1207: snmpc_parseagent(char *agent, char *defaultport)
1208: {
1209: struct addrinfo hints, *ai, *ai0 = NULL;
1210: struct sockaddr_un saddr;
1211: char *agentdup, *specifier, *hostname, *port = NULL;
1212: int error;
1213: int s;
1214:
1215: if ((agentdup = specifier = strdup(agent)) == NULL)
1216: err(1, NULL);
1217:
1218: bzero(&hints, sizeof(hints));
1219: if ((hostname = strchr(specifier, ':')) != NULL) {
1220: *hostname++ = '\0';
1221: if (strcasecmp(specifier, "udp") == 0) {
1222: hints.ai_family = AF_INET;
1223: hints.ai_socktype = SOCK_DGRAM;
1224: } else if (strcasecmp(specifier, "tcp") == 0) {
1225: hints.ai_family = AF_INET;
1226: hints.ai_socktype = SOCK_STREAM;
1227: } else if (strcasecmp(specifier, "udp6") == 0 ||
1228: strcasecmp(specifier, "udpv6") == 0 ||
1229: strcasecmp(specifier, "udpipv6") == 0) {
1230: hints.ai_family = AF_INET6;
1231: hints.ai_socktype = SOCK_DGRAM;
1232: } else if (strcasecmp(specifier, "tcp6") == 0 ||
1233: strcasecmp(specifier, "tcpv6") == 0 ||
1234: strcasecmp(specifier, "tcpipv6") == 0) {
1235: hints.ai_family = AF_INET6;
1236: hints.ai_socktype = SOCK_STREAM;
1237: } else if (strcasecmp(specifier, "unix") == 0) {
1238: hints.ai_family = AF_UNIX;
1239: hints.ai_addr = (struct sockaddr *)&saddr;
1240: hints.ai_addrlen = sizeof(saddr);
1241: saddr.sun_len = sizeof(saddr);
1242: saddr.sun_family = AF_UNIX;
1243: if (strlcpy(saddr.sun_path, hostname,
1244: sizeof(saddr.sun_path)) > sizeof(saddr.sun_path))
1245: errx(1, "Hostname path too long");
1246: ai = &hints;
1247: } else {
1.22 martijn 1248: *--hostname = ':';
1.1 martijn 1249: hostname = specifier;
1250: }
1251: } else {
1252: hostname = specifier;
1.22 martijn 1253: }
1254:
1255: if (hints.ai_family == AF_INET) {
1256: if ((port = strchr(hostname, ':')) != NULL)
1257: *port++ = '\0';
1258: } else if (hints.ai_family == AF_INET6 || hints.ai_family == 0) {
1259: if (hostname[0] == '[') {
1260: hints.ai_family = AF_INET6;
1261: hostname++;
1262: if ((port = strchr(hostname, ']')) == NULL)
1263: errx(1, "invalid agent");
1264: *port++ = '\0';
1265: if (port[0] == ':')
1266: *port++ = '\0';
1267: else if (port[0] == '\0')
1268: port = NULL;
1269: else
1270: errx(1, "invalid agent");
1271: } else {
1272: if ((port = strrchr(hostname, ':')) != NULL)
1273: *port++ = '\0';
1274: }
1.1 martijn 1275: }
1276:
1277: if (hints.ai_family != AF_UNIX) {
1.22 martijn 1278: if (hints.ai_socktype == 0)
1279: hints.ai_socktype = SOCK_DGRAM;
1.1 martijn 1280: if (port == NULL)
1281: port = defaultport;
1282: error = getaddrinfo(hostname, port, &hints, &ai0);
1.22 martijn 1283: if (error) {
1.27 martijn 1284: if (error != EAI_NODATA || port == defaultport)
1.22 martijn 1285: errx(1, "%s", gai_strerror(error));
1286: *--port = ':';
1287: error = getaddrinfo(hostname, defaultport, &hints,
1288: &ai0);
1289: if (error)
1290: errx(1, "%s", gai_strerror(error));
1291: }
1.1 martijn 1292: s = -1;
1293: for (ai = ai0; ai != NULL; ai = ai->ai_next) {
1294: if ((s = socket(ai->ai_family, ai->ai_socktype,
1.22 martijn 1295: ai->ai_protocol)) != -1 &&
1296: connect(s, (struct sockaddr *)ai->ai_addr,
1297: ai->ai_addrlen) != -1)
1298: break;
1.27 martijn 1299: close(s);
1300: s = -1;
1.1 martijn 1301: }
1.22 martijn 1302: } else {
1303: s = socket(AF_UNIX, SOCK_STREAM, 0);
1304: if (connect(s, (struct sockaddr *)ai->ai_addr,
1305: ai->ai_addrlen) == -1)
1306: err(1, "Can't connect to %s", agent);
1307: }
1.1 martijn 1308: if (s == -1)
1.22 martijn 1309: err(1, "Can't connect to agent %s", agent);
1.1 martijn 1310:
1311:
1312: if (ai0 != NULL)
1313: freeaddrinfo(ai0);
1314: free(agentdup);
1315: return s;
1316: }
1317:
1.9 martijn 1318: char *
1319: snmpc_hex2bin(char *hexstr, size_t *binlen)
1320: {
1321: char *decstr;
1322:
1323: if (hexstr[0] == '0' && hexstr[1] == 'x')
1324: hexstr += 2;
1325: while (hexstr[0] == ' ' || hexstr[0] == '\t')
1326: hexstr++;
1327:
1328: if ((decstr = malloc((strlen(hexstr) / 2) + 1)) == NULL)
1329: return NULL;
1330:
1331: for (*binlen = 0; hexstr[0] != '\0'; (*binlen)++) {
1332: hexstr[0] = toupper(hexstr[0]);
1333: hexstr[1] = toupper(hexstr[1]);
1334: if (hexstr[0] >= '0' && hexstr[0] <= '9')
1335: decstr[*binlen] = (hexstr[0] - '0') << 4;
1336: else if (hexstr[0] >= 'A' && hexstr[0] <= 'F')
1337: decstr[*binlen] = ((hexstr[0] - 'A') + 10) << 4;
1338: else
1339: goto fail;
1340: if (hexstr[1] >= '0' && hexstr[1] <= '9')
1341: decstr[*binlen] |= (hexstr[1] - '0');
1342: else if (hexstr[1] >= 'A' && hexstr[1] <= 'F')
1343: decstr[*binlen] |= (hexstr[1] - 'A') + 10;
1344: else
1345: goto fail;
1346:
1347: hexstr += 2;
1348: while (hexstr[0] == ' ' || hexstr[0] == '\t')
1349: hexstr++;
1350: }
1351:
1352: return decstr;
1353: fail:
1354: errno = EINVAL;
1355: free(decstr);
1356: return NULL;
1.29 martijn 1357: }
1358:
1359: ssize_t
1360: snmpc_mbswidth(char *str)
1361: {
1362: wchar_t wc;
1363: size_t width = 0;
1364: size_t i;
1365: int len;
1366:
1367: for (i = 0; (len = mbtowc(&wc, &(str[i]), MB_CUR_MAX)) != 0; i += len) {
1368: if (len == -1) {
1369: mbtowc(NULL, NULL, MB_CUR_MAX);
1370: return -1;
1371: }
1372: width += wcwidth(wc);
1373: }
1374: return width;
1.13 martijn 1375: }
1376:
1377: struct ber_element *
1378: snmpc_varbindparse(int argc, char *argv[])
1379: {
1380: struct ber_oid oid, oidval;
1381: struct in_addr addr4;
1382: char *addr = (char *)&addr4;
1383: char *str = NULL, *tmpstr, *endstr;
1384: const char *errstr = NULL;
1385: struct ber_element *varbind = NULL, *vblist = NULL;
1386: int i, ret;
1387: size_t strl, byte;
1388: long long lval;
1389:
1390: if (argc % 3 != 0)
1391: usage();
1392: for (i = 0; i < argc; i += 3) {
1393: if (smi_string2oid(argv[i], &oid) == -1)
1394: errx(1, "Invalid oid: %s\n", argv[i]);
1395: switch (argv[i + 1][0]) {
1396: case 'a':
1397: ret = inet_pton(AF_INET, argv[i + 2], &addr4);
1398: if (ret == -1)
1399: err(1, "inet_pton");
1400: if (ret == 0)
1401: errx(1, "%s: Bad value notation (%s)", argv[i],
1402: argv[i + 2]);
1.16 tb 1403: if ((varbind = ober_printf_elements(varbind, "{Oxt}",
1.13 martijn 1404: &oid, addr, sizeof(addr4), BER_CLASS_APPLICATION,
1405: SNMP_T_IPADDR)) == NULL)
1.16 tb 1406: err(1, "ober_printf_elements");
1.13 martijn 1407: break;
1408: case 'b':
1409: tmpstr = argv[i + 2];
1410: strl = 0;
1411: do {
1412: lval = strtoll(tmpstr, &endstr, 10);
1413: if (endstr[0] != ' ' && endstr[0] != '\t' &&
1414: endstr[0] != ',' && endstr[0] != '\0')
1415: errx(1, "%s: Bad value notation (%s)",
1416: argv[i], argv[i + 2]);
1417: if (tmpstr == endstr) {
1418: tmpstr++;
1419: continue;
1420: }
1421: if (lval < 0)
1422: errx(1, "%s: Bad value notation (%s)",
1423: argv[i], argv[i + 2]);
1424: byte = lval / 8;
1425: if (byte >= strl) {
1426: if ((str = recallocarray(str, strl,
1427: byte + 1, 1)) == NULL)
1428: err(1, "malloc");
1429: strl = byte + 1;
1430: }
1431: str[byte] |= 0x80 >> (lval % 8);
1432: tmpstr = endstr + 1;
1433: } while (endstr[0] != '\0');
1434: /*
1435: * RFC3416 Section 2.5
1436: * A BITS value is encoded as an OCTET STRING
1437: */
1438: goto pastestring;
1439: case 'c':
1440: lval = strtonum(argv[i + 2], INT32_MIN, INT32_MAX,
1441: &errstr);
1442: if (errstr != NULL)
1443: errx(1, "%s: Bad value notation (%s)", argv[i],
1444: argv[i + 2]);
1.16 tb 1445: if ((varbind = ober_printf_elements(varbind, "{Oit}",
1.13 martijn 1446: &oid, lval, BER_CLASS_APPLICATION,
1447: SNMP_T_COUNTER32)) == NULL)
1.16 tb 1448: err(1, "ober_printf_elements");
1.13 martijn 1449: break;
1450: case 'd':
1451: /* String always shrinks */
1452: if ((str = malloc(strlen(argv[i + 2]))) == NULL)
1453: err(1, "malloc");
1454: tmpstr = argv[i + 2];
1455: strl = 0;
1456: do {
1457: lval = strtoll(tmpstr, &endstr, 10);
1458: if (endstr[0] != ' ' && endstr[0] != '\t' &&
1459: endstr[0] != '\0')
1460: errx(1, "%s: Bad value notation (%s)",
1461: argv[i], argv[i + 2]);
1462: if (tmpstr == endstr) {
1463: tmpstr++;
1464: continue;
1465: }
1466: if (lval < 0 || lval > 0xff)
1467: errx(1, "%s: Bad value notation (%s)",
1468: argv[i], argv[i + 2]);
1469: str[strl++] = (unsigned char) lval;
1470: tmpstr = endstr + 1;
1471: } while (endstr[0] != '\0');
1472: goto pastestring;
1473: case 'u':
1474: case 'i':
1475: lval = strtonum(argv[i + 2], LLONG_MIN, LLONG_MAX,
1476: &errstr);
1477: if (errstr != NULL)
1478: errx(1, "%s: Bad value notation (%s)", argv[i],
1479: argv[i + 2]);
1.16 tb 1480: if ((varbind = ober_printf_elements(varbind, "{Oi}",
1.13 martijn 1481: &oid, lval)) == NULL)
1.16 tb 1482: err(1, "ober_printf_elements");
1.13 martijn 1483: break;
1484: case 'n':
1.16 tb 1485: if ((varbind = ober_printf_elements(varbind, "{O0}",
1.13 martijn 1486: &oid)) == NULL)
1.16 tb 1487: err(1, "ober_printf_elements");
1.13 martijn 1488: break;
1489: case 'o':
1490: if (smi_string2oid(argv[i + 2], &oidval) == -1)
1491: errx(1, "%s: Unknown Object Identifier (Sub-id "
1492: "not found: (top) -> %s)", argv[i],
1493: argv[i + 2]);
1.16 tb 1494: if ((varbind = ober_printf_elements(varbind, "{OO}",
1.13 martijn 1495: &oid, &oidval)) == NULL)
1.16 tb 1496: err(1, "ober_printf_elements");
1.13 martijn 1497: break;
1498: case 's':
1499: if ((str = strdup(argv[i + 2])) == NULL)
1500: err(1, NULL);
1501: strl = strlen(argv[i + 2]);
1502: pastestring:
1.16 tb 1503: if ((varbind = ober_printf_elements(varbind, "{Ox}",
1.13 martijn 1504: &oid, str, strl)) == NULL)
1.16 tb 1505: err(1, "ober_printf_elements");
1.13 martijn 1506: free(str);
1507: break;
1508: case 't':
1509: lval = strtonum(argv[i + 2], LLONG_MIN, LLONG_MAX,
1510: &errstr);
1511: if (errstr != NULL)
1512: errx(1, "%s: Bad value notation (%s)", argv[i],
1513: argv[i + 2]);
1.16 tb 1514: if ((varbind = ober_printf_elements(varbind, "{Oit}",
1.13 martijn 1515: &oid, lval, BER_CLASS_APPLICATION,
1516: SNMP_T_TIMETICKS)) == NULL)
1.16 tb 1517: err(1, "ober_printf_elements");
1.13 martijn 1518: break;
1519: case 'x':
1520: /* String always shrinks */
1521: if ((str = malloc(strlen(argv[i + 2]))) == NULL)
1522: err(1, "malloc");
1523: tmpstr = argv[i + 2];
1524: strl = 0;
1525: do {
1526: lval = strtoll(tmpstr, &endstr, 16);
1527: if (endstr[0] != ' ' && endstr[0] != '\t' &&
1528: endstr[0] != '\0')
1529: errx(1, "%s: Bad value notation (%s)",
1530: argv[i], argv[i + 2]);
1531: if (tmpstr == endstr) {
1532: tmpstr++;
1533: continue;
1534: }
1535: if (lval < 0 || lval > 0xff)
1536: errx(1, "%s: Bad value notation (%s)",
1537: argv[i], argv[i + 2]);
1538: str[strl++] = (unsigned char) lval;
1539: tmpstr = endstr + 1;
1540: } while (endstr[0] != '\0');
1541: goto pastestring;
1542: default:
1543: usage();
1544: }
1545: if (vblist == NULL)
1546: vblist = varbind;
1547: }
1548:
1549: return vblist;
1.9 martijn 1550: }
1551:
1.1 martijn 1552: __dead void
1553: usage(void)
1554: {
1555: size_t i;
1556:
1557: if (snmp_app != NULL) {
1.9 martijn 1558: fprintf(stderr, "usage: snmp %s%s%s\n",
1.4 martijn 1559: snmp_app->name,
1.1 martijn 1560: snmp_app->usecommonopt ?
1.10 martijn 1561: " [-A authpass] [-a digest] [-c community] [-e secengineid]\n"
1.11 martijn 1562: " [-E ctxengineid] [-K localpriv] [-k localauth] [-l seclevel]\n"
1563: " [-n ctxname] [-O afnqvxSQ] [-r retries] [-t timeout] [-u user]\n"
1564: " [-v version] [-X privpass] [-x cipher] [-Z boots,time]\n"
1.9 martijn 1565: " " : "",
1.1 martijn 1566: snmp_app->usage == NULL ? "" : snmp_app->usage);
1567: exit(1);
1568: }
1569: for (i = 0; i < (sizeof(snmp_apps)/sizeof(*snmp_apps)); i++) {
1.4 martijn 1570: if (i == 0)
1571: fprintf(stderr, "usage: ");
1572: else
1573: fprintf(stderr, " ");
1574: fprintf(stderr, "snmp %s%s %s\n",
1575: snmp_apps[i].name,
1.1 martijn 1576: snmp_apps[i].usecommonopt ?
1.17 martijn 1577: " [options]" : "",
1.4 martijn 1578: snmp_apps[i].usage ? snmp_apps[i].usage : "");
1.1 martijn 1579: }
1580: exit(1);
1581: }