2 * radclient.c General radius packet debug tool.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * Copyright 2000 The FreeRADIUS server project
21 * Copyright 2000 Miquel van Smoorenburg <miquels@cistron.nl>
22 * Copyright 2000 Alan DeKok <aland@ox.org>
24 static const char rcsid[] = "$Id$";
27 #include "libradius.h"
39 #include <sys/socket.h>
42 # include <netinet/in.h>
46 # include <sys/select.h>
57 static int retries = 10;
58 static float timeout = 3;
59 static const char *secret = NULL;
60 static int do_output = 1;
61 static int do_summary = 0;
62 static int filedone = 0;
63 static int totalapp = 0;
64 static int totaldeny = 0;
65 static char filesecret[256];
68 * Read valuepairs from the fp up to End-Of-File.
70 static VALUE_PAIR *readvp(FILE *fp)
73 LRAD_TOKEN last_token;
81 while (!error && fgets(buf, sizeof(buf), fp) != NULL) {
85 /* If we get a '\n' by itself, we assume that's the end of that VP */
86 if((buf[0] == '\n') && (list)) {
87 return error ? NULL: list;
89 if((buf[0] == '\n') && (!list))
95 if ((vp = pairread(&p, &last_token)) == NULL) {
96 librad_perror("radclient:");
101 } while (last_token == T_COMMA);
105 return error ? NULL: list;
108 static void usage(void)
110 fprintf(stderr, "Usage: radclient [-c count] [-d raddb] [-f file] [-r retries] [-t timeout]\n"
111 "[-i id] [-qvxS] server[:port] auth|acct|status [<secret>]\n");
113 fprintf(stderr, " -c count Send each packet 'count' times.\n");
114 fprintf(stderr, " -d raddb Set dictionary directory.\n");
115 fprintf(stderr, " -f file Read packets from file, not stdin.\n");
116 fprintf(stderr, " -r retries If timeout, retry sending the packet 'retries' times.\n");
117 fprintf(stderr, " -t timeout Wait 'timeout' seconds before retrying.\n");
118 fprintf(stderr, " -i id Set request id to 'id'. Values may be 0..255\n");
119 fprintf(stderr, " -S file read secret from file, not command line.\n");
120 fprintf(stderr, " -q Do not print anything out.\n");
121 fprintf(stderr, " -s Print out summary information of auth results.\n");
122 fprintf(stderr, " -v Show program version information.\n");
123 fprintf(stderr, " -x Debugging mode.\n");
128 static int getport(const char *name)
132 svp = getservbyname (name, "udp");
137 return ntohs(svp->s_port);
140 static int send_packet(RADIUS_PACKET *req, RADIUS_PACKET **rep)
145 for (i = 0; i < retries; i++) {
148 rad_send(req, NULL, secret);
150 /* And wait for reply, timing out as necessary */
152 FD_SET(req->sockfd, &rdfdesc);
154 tv.tv_sec = (int)timeout;
155 tv.tv_usec = 1000000 * (timeout - (int)timeout);
157 /* Something's wrong if we don't get exactly one fd. */
158 if (select(req->sockfd + 1, &rdfdesc, NULL, NULL, &tv) != 1) {
162 *rep = rad_recv(req->sockfd);
165 * If we get a response from a machine
166 * which we did NOT send a request to,
169 if (((*rep)->src_ipaddr != req->dst_ipaddr) ||
170 ((*rep)->src_port != req->dst_port)) {
171 char src[64], dst[64];
173 ip_ntoa(src, (*rep)->src_ipaddr);
174 ip_ntoa(dst, req->src_ipaddr);
175 fprintf(stderr, "radclient: ERROR: Sent request to host %s, got response from host %s\n!", dst, src);
179 } else { /* NULL: couldn't receive the packet */
180 librad_perror("radclient:");
185 /* No response or no data read (?) */
187 fprintf(stderr, "radclient: no response from server\n");
191 if (rad_decode(*rep, req, secret) != 0) {
192 librad_perror("rad_decode");
196 /* libradius debug already prints out the value pairs for us */
197 if (!librad_debug && do_output) {
198 printf("Received response ID %d, code %d, length = %d\n",
199 (*rep)->id, (*rep)->code, (*rep)->data_len);
200 vp_printlist(stdout, (*rep)->vps);
202 if((*rep)->code == PW_AUTHENTICATION_ACK) {
211 int main(int argc, char **argv)
214 RADIUS_PACKET *rep = NULL;
218 const char *radius_dir = RADDBDIR;
219 char *filename = NULL;
227 id = ((int)getpid() & 0xff);
230 while ((c = getopt(argc, argv, "c:d:f:hi:qst:r:S:xv")) != EOF) switch(c) {
232 if (!isdigit((int) *optarg))
234 count = atoi(optarg);
249 if (!isdigit((int) *optarg))
251 retries = atoi(optarg);
254 if (!isdigit((int) *optarg))
257 if ((id < 0) || (id > 255)) {
265 if (!isdigit((int) *optarg))
267 timeout = atof(optarg);
270 printf("radclient: $Id$ built on " __DATE__ " at " __TIME__ "\n");
274 fp = fopen(optarg, "r");
276 fprintf(stderr, "radclient: Error opening %s: %s\n",
277 optarg, strerror(errno));
280 if (fgets(filesecret, sizeof(filesecret), fp) == NULL) {
281 fprintf(stderr, "radclient: Error reading %s: %s\n",
282 optarg, strerror(errno));
287 /* truncate newline */
288 p = filesecret + strlen(filesecret) - 1;
289 while ((p >= filesecret) &&
295 if (strlen(filesecret) < 2) {
296 fprintf(stderr, "radclient: Secret in %s is too short\n", optarg);
306 argc -= (optind - 1);
307 argv += (optind - 1);
310 ((secret == NULL) && (argc < 4))) {
314 if (dict_init(radius_dir, RADIUS_DICTIONARY) < 0) {
315 librad_perror("radclient");
319 if ((req = rad_alloc(1)) == NULL) {
320 librad_perror("radclient");
327 * Strip port from hostname if needed.
329 if ((p = strchr(argv[1], ':')) != NULL) {
335 * See what kind of request we want to send.
337 if (strcmp(argv[2], "auth") == 0) {
338 if (port == 0) port = getport("radius");
339 if (port == 0) port = PW_AUTH_UDP_PORT;
340 req->code = PW_AUTHENTICATION_REQUEST;
341 } else if (strcmp(argv[2], "acct") == 0) {
342 if (port == 0) port = getport("radacct");
343 if (port == 0) port = PW_ACCT_UDP_PORT;
344 req->code = PW_ACCOUNTING_REQUEST;
346 } else if (strcmp(argv[2], "status") == 0) {
347 if (port == 0) port = getport("radius");
348 if (port == 0) port = PW_AUTH_UDP_PORT;
349 req->code = PW_STATUS_SERVER;
350 } else if (isdigit((int) argv[2][0])) {
351 if (port == 0) port = getport("radius");
352 if (port == 0) port = PW_AUTH_UDP_PORT;
353 req->code = atoi(argv[2]);
361 req->dst_port = port;
362 req->dst_ipaddr = ip_getaddr(argv[1]);
363 if (req->dst_ipaddr == INADDR_NONE) {
364 librad_perror("radclient: %s: ", argv[1]);
371 if (argv[3]) secret = argv[3];
375 * Maybe read them, from stdin, if there's no
376 * filename, or if the filename is '-'.
378 if (filename && (strcmp(filename, "-") != 0)) {
379 fp = fopen(filename, "r");
381 fprintf(stderr, "radclient: Error opening %s: %s\n",
382 filename, strerror(errno));
392 if ((req->sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
393 perror("radclient: socket: ");
398 if(req->vps) pairfree(&req->vps);
400 if ((req->vps = readvp(fp)) == NULL) {
406 * Keep a copy of the the User-Password attribute.
408 if ((vp = pairfind(req->vps, PW_PASSWORD)) != NULL) {
409 strNcpy(password, (char *)vp->strvalue, sizeof(vp->strvalue));
411 * Otherwise keep a copy of the CHAP-Password attribute.
413 } else if ((vp = pairfind(req->vps, PW_CHAP_PASSWORD)) != NULL) {
414 strNcpy(password, (char *)vp->strvalue, sizeof(vp->strvalue));
420 * Fix up Digest-Attributes issues
422 for (vp = req->vps; vp != NULL; vp = vp->next) {
423 switch (vp->attribute) {
427 case PW_DIGEST_REALM:
428 case PW_DIGEST_NONCE:
429 case PW_DIGEST_METHOD:
432 case PW_DIGEST_ALGORITHM:
433 case PW_DIGEST_BODY_DIGEST:
434 case PW_DIGEST_CNONCE:
435 case PW_DIGEST_NONCE_COUNT:
436 case PW_DIGEST_USER_NAME:
438 memmove(&vp->strvalue[2], &vp->strvalue[0], vp->length);
439 vp->strvalue[0] = vp->attribute - PW_DIGEST_REALM + 1;
441 vp->strvalue[1] = vp->length;
442 vp->attribute = PW_DIGEST_ATTRIBUTES;
448 * Loop, sending the packet N times.
450 for (loop = 0; loop < count; loop++) {
454 * If we've already sent a packet, free up the old
455 * one, and ensure that the next packet has a unique
456 * ID and authentication vector.
463 librad_md5_calc(req->vector, req->vector,
464 sizeof(req->vector));
466 if (*password != '\0') {
467 if ((vp = pairfind(req->vps, PW_CHAP_PASSWORD)) != NULL) {
468 strNcpy((char *)vp->strvalue, password, strlen(password) + 1);
469 vp->length = strlen(password);
471 rad_chap_encode(req, (char *) vp->strvalue, req->id, vp);
474 } /* there WAS a password */
475 send_packet(req, &rep);
480 printf("\n\t Total approved auths: %d\n", totalapp);
481 printf("\t Total denied auths: %d\n", totaldeny);