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rtquery.c (18316) rtquery.c (19880)
1/*-
2 * Copyright (c) 1982, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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60#include <strings.h>
61#include <bstring.h>
62#endif
63
64#ifndef sgi
65#define _HAVE_SIN_LEN
66#endif
67
1/*-
2 * Copyright (c) 1982, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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60#include <strings.h>
61#include <bstring.h>
62#endif
63
64#ifndef sgi
65#define _HAVE_SIN_LEN
66#endif
67
68#define MD5_DIGEST_LEN 16
69typedef struct {
70 u_int32_t state[4]; /* state (ABCD) */
71 u_int32_t count[2]; /* # of bits, modulo 2^64 (LSB 1st) */
72 unsigned char buffer[64]; /* input buffer */
73} MD5_CTX;
74extern void MD5Init(MD5_CTX*);
75extern void MD5Update(MD5_CTX*, u_char*, u_int);
76extern void MD5Final(u_char[MD5_DIGEST_LEN], MD5_CTX*);
77
78
68#define WTIME 15 /* Time to wait for all responses */
69#define STIME (250*1000) /* usec to wait for another response */
70
71int s;
72
73char *pgmname;
74
75union {

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85 } imsg_buf;
86#define IMSG imsg_buf.rip
87
88int nflag; /* numbers, no names */
89int pflag; /* play the `gated` game */
90int ripv2 = 1; /* use RIP version 2 */
91int wtime = WTIME;
92int rflag; /* 1=ask about a particular route */
79#define WTIME 15 /* Time to wait for all responses */
80#define STIME (250*1000) /* usec to wait for another response */
81
82int s;
83
84char *pgmname;
85
86union {

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96 } imsg_buf;
97#define IMSG imsg_buf.rip
98
99int nflag; /* numbers, no names */
100int pflag; /* play the `gated` game */
101int ripv2 = 1; /* use RIP version 2 */
102int wtime = WTIME;
103int rflag; /* 1=ask about a particular route */
93int trace;
94int not_trace;
104int trace, not_trace; /* send trace command or not */
105int auth_type = RIP_AUTH_NONE;
106char passwd[RIP_AUTH_PW_LEN];
107u_long keyid;
95
96struct timeval sent; /* when query sent */
97
98static void rip_input(struct sockaddr_in*, int);
99static int out(char *);
100static void trace_loop(char *argv[]);
101static void query_loop(char *argv[], int);
102static int getnet(char *, struct netinfo *);
103static u_int std_mask(u_int);
108
109struct timeval sent; /* when query sent */
110
111static void rip_input(struct sockaddr_in*, int);
112static int out(char *);
113static void trace_loop(char *argv[]);
114static void query_loop(char *argv[], int);
115static int getnet(char *, struct netinfo *);
116static u_int std_mask(u_int);
117static int parse_quote(char **, char *, char *, char *, int);
104
105
106int
107main(int argc,
108 char *argv[])
109{
110 int ch, bsize;
118
119
120int
121main(int argc,
122 char *argv[])
123{
124 int ch, bsize;
111 char *p, *options, *value;
125 char *p, *options, *value, delim;
112
113 OMSG.rip_nets[0].n_dst = RIP_DEFAULT;
114 OMSG.rip_nets[0].n_family = RIP_AF_UNSPEC;
115 OMSG.rip_nets[0].n_metric = htonl(HOPCNT_INFINITY);
116
117 pgmname = argv[0];
126
127 OMSG.rip_nets[0].n_dst = RIP_DEFAULT;
128 OMSG.rip_nets[0].n_family = RIP_AF_UNSPEC;
129 OMSG.rip_nets[0].n_metric = htonl(HOPCNT_INFINITY);
130
131 pgmname = argv[0];
118 while ((ch = getopt(argc, argv, "np1w:r:t:")) != EOF)
132 while ((ch = getopt(argc, argv, "np1w:r:t:a:")) != EOF)
119 switch (ch) {
120 case 'n':
121 not_trace = 1;
122 nflag = 1;
123 break;
124
125 case 'p':
126 not_trace = 1;

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203 default:
204 goto usage;
205 }
206 strcpy((char*)OMSG.rip_tracefile, value);
207 omsg_len += strlen(value) - sizeof(OMSG.ripun);
208 }
209 break;
210
133 switch (ch) {
134 case 'n':
135 not_trace = 1;
136 nflag = 1;
137 break;
138
139 case 'p':
140 not_trace = 1;

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217 default:
218 goto usage;
219 }
220 strcpy((char*)OMSG.rip_tracefile, value);
221 omsg_len += strlen(value) - sizeof(OMSG.ripun);
222 }
223 break;
224
225 case 'a':
226 not_trace = 1;
227 p = strchr(optarg,'=');
228 if (!p)
229 goto usage;
230 *p++ = '\0';
231 if (!strcasecmp("passwd",optarg))
232 auth_type = RIP_AUTH_PW;
233 else if (!strcasecmp("md5_passwd",optarg))
234 auth_type = RIP_AUTH_MD5;
235 else
236 goto usage;
237 if (0 > parse_quote(&p,"|",&delim,
238 passwd,sizeof(passwd)))
239 goto usage;
240 if (auth_type == RIP_AUTH_MD5
241 && delim == '|') {
242 keyid = strtoul(p+1,&p,0);
243 if (keyid > 255 || *p != '\0')
244 goto usage;
245 } else if (delim != '\0') {
246 goto usage;
247 }
248 break;
249
211 default:
212 goto usage;
213 }
214 argv += optind;
215 argc -= optind;
216 if ((not_trace && trace) || argc == 0) {
217usage: fprintf(stderr, "%s: [-np1v] [-r tgt_rt] [-w wtime]"
250 default:
251 goto usage;
252 }
253 argv += optind;
254 argc -= optind;
255 if ((not_trace && trace) || argc == 0) {
256usage: fprintf(stderr, "%s: [-np1v] [-r tgt_rt] [-w wtime]"
218 " host1 [host2 ...]\n"
219 "or\t-t {on=filename|more|off} host1 host2 ...\n",
257 " [-a type=passwd] host1 [host2 ...]\n"
258 "or\t-t {on=filename|more|off|on=dump/../table}"
259 " host1 [host2 ...]\n",
220 pgmname);
221 exit(1);
222 }
223
224 s = socket(AF_INET, SOCK_DGRAM, 0);
225 if (s < 0) {
226 perror("socket");
227 exit(2);

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289}
290
291
292/* query all of the listed hosts
293 */
294static void
295query_loop(char *argv[], int argc)
296{
260 pgmname);
261 exit(1);
262 }
263
264 s = socket(AF_INET, SOCK_DGRAM, 0);
265 if (s < 0) {
266 perror("socket");
267 exit(2);

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329}
330
331
332/* query all of the listed hosts
333 */
334static void
335query_loop(char *argv[], int argc)
336{
337# define NA0 (OMSG.rip_auths[0])
338# define NA2 (OMSG.rip_auths[2])
297 struct seen {
298 struct seen *next;
299 struct in_addr addr;
300 } *seen, *sp;
301 int answered = 0;
302 int cc;
303 fd_set bits;
304 struct timeval now, delay;
305 struct sockaddr_in from;
306 int fromlen;
339 struct seen {
340 struct seen *next;
341 struct in_addr addr;
342 } *seen, *sp;
343 int answered = 0;
344 int cc;
345 fd_set bits;
346 struct timeval now, delay;
347 struct sockaddr_in from;
348 int fromlen;
349 MD5_CTX md5_ctx;
307
308
309 OMSG.rip_cmd = (pflag) ? RIPCMD_POLL : RIPCMD_REQUEST;
310 if (ripv2) {
311 OMSG.rip_vers = RIPv2;
350
351
352 OMSG.rip_cmd = (pflag) ? RIPCMD_POLL : RIPCMD_REQUEST;
353 if (ripv2) {
354 OMSG.rip_vers = RIPv2;
355 if (auth_type == RIP_AUTH_PW) {
356 OMSG.rip_nets[1] = OMSG.rip_nets[0];
357 NA0.a_family = RIP_AF_AUTH;
358 NA0.a_type = RIP_AUTH_PW;
359 bcopy(passwd, NA0.au.au_pw,
360 RIP_AUTH_PW_LEN);
361 omsg_len += sizeof(OMSG.rip_nets[0]);
362
363 } else if (auth_type == RIP_AUTH_MD5) {
364 OMSG.rip_nets[1] = OMSG.rip_nets[0];
365 NA0.a_family = RIP_AF_AUTH;
366 NA0.a_type = RIP_AUTH_MD5;
367 NA0.au.a_md5.md5_keyid = (int8_t)keyid;
368 NA0.au.a_md5.md5_auth_len = RIP_AUTH_PW_LEN;
369 NA0.au.a_md5.md5_seqno = 0;
370 NA0.au.a_md5.md5_pkt_len = sizeof(OMSG.rip_nets[1]);
371 NA2.a_family = RIP_AF_AUTH;
372 NA2.a_type = 1;
373 bcopy(passwd, NA2.au.au_pw, sizeof(NA2.au.au_pw));
374 MD5Init(&md5_ctx);
375 MD5Update(&md5_ctx, (u_char *)&NA0,
376 (char *)(&NA2+1) - (char *)&NA0);
377 MD5Final(NA2.au.au_pw, &md5_ctx);
378 omsg_len += 2*sizeof(OMSG.rip_nets[0]);
379 }
380
312 } else {
313 OMSG.rip_vers = RIPv1;
314 OMSG.rip_nets[0].n_mask = 0;
315 }
316
317 /* ask the first (valid) host */
318 seen = 0;
319 while (0 > out(*argv++)) {

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388 break;
389 }
390
391 /* fail if there was no answer */
392 exit (answered >= argc ? 0 : 1);
393}
394
395
381 } else {
382 OMSG.rip_vers = RIPv1;
383 OMSG.rip_nets[0].n_mask = 0;
384 }
385
386 /* ask the first (valid) host */
387 seen = 0;
388 while (0 > out(*argv++)) {

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457 break;
458 }
459
460 /* fail if there was no answer */
461 exit (answered >= argc ? 0 : 1);
462}
463
464
396/* sent do one host
465/* send to one host
397 */
398static int
399out(char *host)
400{
401 struct sockaddr_in router;
402 struct hostent *hp;
403
404 if (gettimeofday(&sent, 0) < 0) {

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427 return -1;
428 }
429
430 return 0;
431}
432
433
434/*
466 */
467static int
468out(char *host)
469{
470 struct sockaddr_in router;
471 struct hostent *hp;
472
473 if (gettimeofday(&sent, 0) < 0) {

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496 return -1;
497 }
498
499 return 0;
500}
501
502
503/*
504 * Convert string to printable characters
505 */
506static char *
507qstring(u_char *s, int len)
508{
509 static char buf[8*20+1];
510 char *p;
511 u_char *s2, c;
512
513
514 for (p = buf; len != 0 && p < &buf[sizeof(buf)-1]; len--) {
515 c = *s++;
516 if (c == '\0') {
517 for (s2 = s+1; s2 < &s[len]; s2++) {
518 if (*s2 != '\0')
519 break;
520 }
521 if (s2 >= &s[len])
522 goto exit;
523 }
524
525 if (c >= ' ' && c < 0x7f && c != '\\') {
526 *p++ = c;
527 continue;
528 }
529 *p++ = '\\';
530 switch (c) {
531 case '\\':
532 *p++ = '\\';
533 break;
534 case '\n':
535 *p++= 'n';
536 break;
537 case '\r':
538 *p++= 'r';
539 break;
540 case '\t':
541 *p++ = 't';
542 break;
543 case '\b':
544 *p++ = 'b';
545 break;
546 default:
547 p += sprintf(p,"%o",c);
548 break;
549 }
550 }
551exit:
552 *p = '\0';
553 return buf;
554}
555
556
557/*
435 * Handle an incoming RIP packet.
436 */
437static void
438rip_input(struct sockaddr_in *from,
439 int size)
440{
441 struct netinfo *n, *lim;
442 struct in_addr in;
443 char *name;
444 char net_buf[80];
445 u_int mask, dmask;
446 char *sp;
447 int i;
448 struct hostent *hp;
449 struct netent *np;
558 * Handle an incoming RIP packet.
559 */
560static void
561rip_input(struct sockaddr_in *from,
562 int size)
563{
564 struct netinfo *n, *lim;
565 struct in_addr in;
566 char *name;
567 char net_buf[80];
568 u_int mask, dmask;
569 char *sp;
570 int i;
571 struct hostent *hp;
572 struct netent *np;
450 struct netauth *a;
573 struct netauth *na;
451
452
453 if (nflag) {
454 printf("%s:", inet_ntoa(from->sin_addr));
455 } else {
456 hp = gethostbyaddr((char*)&from->sin_addr,
457 sizeof(struct in_addr), AF_INET);
458 if (hp == 0) {

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539 sizeof(in),
540 AF_INET);
541 if (hp != 0)
542 name = hp->h_name;
543 }
544 }
545
546 } else if (n->n_family == RIP_AF_AUTH) {
574
575
576 if (nflag) {
577 printf("%s:", inet_ntoa(from->sin_addr));
578 } else {
579 hp = gethostbyaddr((char*)&from->sin_addr,
580 sizeof(struct in_addr), AF_INET);
581 if (hp == 0) {

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662 sizeof(in),
663 AF_INET);
664 if (hp != 0)
665 name = hp->h_name;
666 }
667 }
668
669 } else if (n->n_family == RIP_AF_AUTH) {
547 a = (struct netauth*)n;
548 (void)printf(" authentication type %d: ",
549 a->a_type);
550 for (i = 0; i < sizeof(a->au.au_pw); i++)
551 (void)printf("%02x ", a->au.au_pw[i]);
670 na = (struct netauth*)n;
671 if (na->a_type == RIP_AUTH_PW
672 && n == IMSG.rip_nets) {
673 (void)printf(" Password Authentication:"
674 " \"%s\"\n",
675 qstring(na->au.au_pw,
676 RIP_AUTH_PW_LEN));
677 continue;
678 }
679
680 if (na->a_type == RIP_AUTH_MD5
681 && n == IMSG.rip_nets) {
682 (void)printf(" MD5 Authentication"
683 " len=%d KeyID=%d"
684 " seqno=%d"
685 " rsvd=%#x,%#x\n",
686 na->au.a_md5.md5_pkt_len,
687 na->au.a_md5.md5_keyid,
688 na->au.a_md5.md5_seqno,
689 na->au.a_md5.rsvd[0],
690 na->au.a_md5.rsvd[1]);
691 continue;
692 }
693 (void)printf(" Authentication type %d: ",
694 ntohs(na->a_type));
695 for (i = 0; i < sizeof(na->au.au_pw); i++)
696 (void)printf("%02x ", na->au.au_pw[i]);
552 putc('\n', stdout);
553 continue;
554
555 } else {
556 (void)sprintf(net_buf, "(af %#x) %d.%d.%d.%d",
557 ntohs(n->n_family),
558 (char)(n->n_dst >> 24),
559 (char)(n->n_dst >> 16),

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647 mask = 0xffffffff << (32-mask);
648 }
649
650 rt->n_dst = htonl(in.s_addr);
651 rt->n_family = RIP_AF_INET;
652 rt->n_mask = htonl(mask);
653 return 1;
654}
697 putc('\n', stdout);
698 continue;
699
700 } else {
701 (void)sprintf(net_buf, "(af %#x) %d.%d.%d.%d",
702 ntohs(n->n_family),
703 (char)(n->n_dst >> 24),
704 (char)(n->n_dst >> 16),

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792 mask = 0xffffffff << (32-mask);
793 }
794
795 rt->n_dst = htonl(in.s_addr);
796 rt->n_family = RIP_AF_INET;
797 rt->n_mask = htonl(mask);
798 return 1;
799}
800
801
802/* strtok(), but honoring backslash
803 */
804static int /* -1=bad */
805parse_quote(char **linep,
806 char *delims,
807 char *delimp,
808 char *buf,
809 int lim)
810{
811 char c, *pc, *p;
812
813
814 pc = *linep;
815 if (*pc == '\0')
816 return -1;
817
818 for (;;) {
819 if (lim == 0)
820 return -1;
821 c = *pc++;
822 if (c == '\0')
823 break;
824
825 if (c == '\\' && pc != '\0') {
826 if ((c = *pc++) == 'n') {
827 c = '\n';
828 } else if (c == 'r') {
829 c = '\r';
830 } else if (c == 't') {
831 c = '\t';
832 } else if (c == 'b') {
833 c = '\b';
834 } else if (c >= '0' && c <= '7') {
835 c -= '0';
836 if (*pc >= '0' && *pc <= '7') {
837 c = (c<<3)+(*pc++ - '0');
838 if (*pc >= '0' && *pc <= '7')
839 c = (c<<3)+(*pc++ - '0');
840 }
841 }
842
843 } else {
844 for (p = delims; *p != '\0'; ++p) {
845 if (*p == c)
846 goto exit;
847 }
848 }
849
850 *buf++ = c;
851 --lim;
852 }
853exit:
854 if (delimp != 0)
855 *delimp = c;
856 *linep = pc-1;
857 if (lim != 0)
858 *buf = '\0';
859 return 0;
860}