2 * radeapclient.c EAP specific 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 * Copyright 2000,2006 The FreeRADIUS server project
21 * Copyright 2000 Miquel van Smoorenburg <miquels@cistron.nl>
22 * Copyright 2000 Alan DeKok <aland@ox.org>
25 #include <freeradius-devel/ident.h>
28 #include <freeradius-devel/libradius.h>
36 #include <freeradius-devel/conf.h>
37 #include <freeradius-devel/radpaths.h>
38 #include <freeradius-devel/md5.h>
40 #include "eap_types.h"
43 extern int sha1_data_problems;
45 static int retries = 10;
46 static float timeout = 3;
47 static const char *secret = NULL;
48 static int do_output = 1;
49 static int do_summary = 0;
50 static int filedone = 0;
51 static int totalapp = 0;
52 static int totaldeny = 0;
53 static char filesecret[256];
54 char *radius_dir = NULL;
55 const char *progname = "radeapclient";
56 /* fr_randctx randctx; */
59 #include <freeradius-devel/tls.h>
61 int tls_success(UNUSED tls_session_t *ssn, UNUSED REQUEST *request){return 0;}
62 void tls_fail(UNUSED tls_session_t *ssn){_exit(1);}
63 fr_tls_status_t tls_ack_handler(UNUSED tls_session_t *tls_session, UNUSED REQUEST *request){return FR_TLS_INVALID;}
64 fr_tls_status_t tls_application_data(UNUSED tls_session_t *ssn, UNUSED REQUEST *request){return FR_TLS_INVALID;}
67 radlog_dest_t radlog_dest = RADLOG_STDERR;
68 const char *radlog_dir = NULL;
72 struct eapsim_keys eapsim_mk;
74 static void map_eap_types(RADIUS_PACKET *req);
75 static void unmap_eap_types(RADIUS_PACKET *rep);
76 static int map_eapsim_types(RADIUS_PACKET *r);
77 static int unmap_eapsim_types(RADIUS_PACKET *r);
79 void debug_pair_list(UNUSED VALUE_PAIR *vp)
84 static void NEVER_RETURNS usage(void)
86 fprintf(stderr, "Usage: radeapclient [options] server[:port] <command> [<secret>]\n");
88 fprintf(stderr, " <command> One of auth, acct, status, or disconnect.\n");
89 fprintf(stderr, " -c count Send each packet 'count' times.\n");
90 fprintf(stderr, " -d raddb Set dictionary directory.\n");
91 fprintf(stderr, " -f file Read packets from file, not stdin.\n");
92 fprintf(stderr, " -r retries If timeout, retry sending the packet 'retries' times.\n");
93 fprintf(stderr, " -t timeout Wait 'timeout' seconds before retrying (may be a floating point number).\n");
94 fprintf(stderr, " -h Print usage help information.\n");
95 fprintf(stderr, " -i id Set request id to 'id'. Values may be 0..255\n");
96 fprintf(stderr, " -S file read secret from file, not command line.\n");
97 fprintf(stderr, " -q Do not print anything out.\n");
98 fprintf(stderr, " -s Print out summary information of auth results.\n");
99 fprintf(stderr, " -v Show program version information.\n");
100 fprintf(stderr, " -x Debugging mode.\n");
105 int radlog(int lvl, const char *msg, ...)
110 r = lvl; /* shut up compiler */
113 r = vfprintf(stderr, msg, ap);
120 int log_debug(const char *msg, ...)
126 r = vfprintf(stderr, msg, ap);
133 void radlog_request(UNUSED int lvl, UNUSED int priority,
134 UNUSED REQUEST *request, const char *msg, ...)
139 vfprintf(stderr, msg, ap);
144 static int getport(const char *name)
148 svp = getservbyname (name, "udp");
153 return ntohs(svp->s_port);
158 static void debug_packet(RADIUS_PACKET *packet, int direction)
162 const char *received, *from;
163 const fr_ipaddr_t *ip;
168 if (direction == 0) {
169 received = "Received";
170 from = "from"; /* what else? */
171 ip = &packet->src_ipaddr;
172 port = packet->src_port;
175 received = "Sending";
176 from = "to"; /* hah! */
177 ip = &packet->dst_ipaddr;
178 port = packet->dst_port;
182 * Client-specific debugging re-prints the input
183 * packet into the client log.
185 * This really belongs in a utility library
187 if ((packet->code > 0) && (packet->code < FR_MAX_PACKET_CODE)) {
188 printf("%s %s packet %s host %s port %d, id=%d, length=%d\n",
189 received, fr_packet_codes[packet->code], from,
190 inet_ntop(ip->af, &ip->ipaddr, buffer, sizeof(buffer)),
191 port, packet->id, (int) packet->data_len);
193 printf("%s packet %s host %s port %d code=%d, id=%d, length=%d\n",
195 inet_ntop(ip->af, &ip->ipaddr, buffer, sizeof(buffer)),
197 packet->code, packet->id, (int) packet->data_len);
200 for (vp = packet->vps; vp != NULL; vp = vp->next) {
201 vp_prints(buffer, sizeof(buffer), vp);
202 printf("\t%s\n", buffer);
208 static int send_packet(RADIUS_PACKET *req, RADIUS_PACKET **rep)
213 for (i = 0; i < retries; i++) {
216 debug_packet(req, R_SENT);
218 rad_send(req, NULL, secret);
220 /* And wait for reply, timing out as necessary */
222 FD_SET(req->sockfd, &rdfdesc);
224 tv.tv_sec = (int)timeout;
225 tv.tv_usec = 1000000 * (timeout - (int) timeout);
227 /* Something's wrong if we don't get exactly one fd. */
228 if (select(req->sockfd + 1, &rdfdesc, NULL, NULL, &tv) != 1) {
232 *rep = rad_recv(req->sockfd, 0);
235 * If we get a response from a machine
236 * which we did NOT send a request to,
239 if (((*rep)->src_ipaddr.af != req->dst_ipaddr.af) ||
240 (memcmp(&(*rep)->src_ipaddr.ipaddr,
241 &req->dst_ipaddr.ipaddr,
242 ((req->dst_ipaddr.af == AF_INET ? /* AF_INET6? */
243 sizeof(req->dst_ipaddr.ipaddr.ip4addr) : /* FIXME: AF_INET6 */
244 sizeof(req->dst_ipaddr.ipaddr.ip6addr)))) != 0) ||
245 ((*rep)->src_port != req->dst_port)) {
246 char src[128], dst[128];
248 ip_ntoh(&(*rep)->src_ipaddr, src, sizeof(src));
249 ip_ntoh(&req->dst_ipaddr, dst, sizeof(dst));
250 fprintf(stderr, "radclient: ERROR: Sent request to host %s port %d, got response from host %s port %d\n!",
252 src, (*rep)->src_port);
256 } else { /* NULL: couldn't receive the packet */
257 fr_perror("radclient:");
262 /* No response or no data read (?) */
264 fprintf(stderr, "radclient: no response from server\n");
269 * FIXME: Discard the packet & listen for another.
271 * Hmm... we should really be using eapol_test, which does
272 * a lot more than radeapclient.
274 if (rad_verify(*rep, req, secret) != 0) {
275 fr_perror("rad_verify");
279 if (rad_decode(*rep, req, secret) != 0) {
280 fr_perror("rad_decode");
284 /* libradius debug already prints out the value pairs for us */
285 if (!fr_debug_flag && do_output) {
286 debug_packet(*rep, R_RECV);
288 if((*rep)->code == PW_AUTHENTICATION_ACK) {
290 } else if ((*rep)->code == PW_AUTHENTICATION_REJECT) {
297 static void cleanresp(RADIUS_PACKET *resp)
299 VALUE_PAIR *vpnext, *vp, **last;
303 * maybe should just copy things we care about, or keep
304 * a copy of the original input and start from there again?
306 pairdelete(&resp->vps, PW_EAP_MESSAGE, 0);
307 pairdelete(&resp->vps, ATTRIBUTE_EAP_BASE+PW_EAP_IDENTITY, 0);
310 for(vp = *last; vp != NULL; vp = vpnext)
314 if((vp->attribute > ATTRIBUTE_EAP_BASE &&
315 vp->attribute <= ATTRIBUTE_EAP_BASE+256) ||
316 (vp->attribute > ATTRIBUTE_EAP_SIM_BASE &&
317 vp->attribute <= ATTRIBUTE_EAP_SIM_BASE+256))
328 * we got an EAP-Request/Sim/Start message in a legal state.
330 * pick a supported version, put it into the reply, and insert a nonce.
332 static int process_eap_start(RADIUS_PACKET *req,
335 VALUE_PAIR *vp, *newvp;
336 VALUE_PAIR *anyidreq_vp, *fullauthidreq_vp, *permanentidreq_vp;
337 uint16_t *versions, selectedversion;
338 unsigned int i,versioncount;
340 /* form new response clear of any EAP stuff */
343 if((vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_VERSION_LIST, 0)) == NULL) {
344 fprintf(stderr, "illegal start message has no VERSION_LIST\n");
348 versions = (uint16_t *)vp->vp_strvalue;
350 /* verify that the attribute length is big enough for a length field */
353 fprintf(stderr, "start message has illegal VERSION_LIST. Too short: %u\n", (unsigned int) vp->length);
357 versioncount = ntohs(versions[0])/2;
358 /* verify that the attribute length is big enough for the given number
359 * of versions present.
361 if((unsigned)vp->length <= (versioncount*2 + 2))
363 fprintf(stderr, "start message is too short. Claimed %d versions does not fit in %u bytes\n", versioncount, (unsigned int) vp->length);
368 * record the versionlist for the MK calculation.
370 eapsim_mk.versionlistlen = versioncount*2;
371 memcpy(eapsim_mk.versionlist, (unsigned char *)(versions+1),
372 eapsim_mk.versionlistlen);
374 /* walk the version list, and pick the one we support, which
375 * at present, is 1, EAP_SIM_VERSION.
378 for(i=0; i < versioncount; i++)
380 if(ntohs(versions[i+1]) == EAP_SIM_VERSION)
382 selectedversion=EAP_SIM_VERSION;
386 if(selectedversion == 0)
388 fprintf(stderr, "eap-sim start message. No compatible version found. We need %d\n", EAP_SIM_VERSION);
389 for(i=0; i < versioncount; i++)
391 fprintf(stderr, "\tfound version %d\n",
392 ntohs(versions[i+1]));
397 * now make sure that we have only FULLAUTH_ID_REQ.
398 * I think that it actually might not matter - we can answer in
399 * anyway we like, but it is illegal to have more than one
402 anyidreq_vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_ANY_ID_REQ, 0);
403 fullauthidreq_vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_FULLAUTH_ID_REQ, 0);
404 permanentidreq_vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_PERMANENT_ID_REQ, 0);
406 if(fullauthidreq_vp == NULL ||
407 anyidreq_vp != NULL ||
408 permanentidreq_vp != NULL) {
409 fprintf(stderr, "start message has %sanyidreq, %sfullauthid and %spermanentid. Illegal combination.\n",
410 (anyidreq_vp != NULL ? "a " : "no "),
411 (fullauthidreq_vp != NULL ? "a " : "no "),
412 (permanentidreq_vp != NULL ? "a " : "no "));
416 /* okay, we have just any_id_req there, so fill in response */
418 /* mark the subtype as being EAP-SIM/Response/Start */
419 newvp = paircreate(ATTRIBUTE_EAP_SIM_SUBTYPE, 0, PW_TYPE_INTEGER);
420 newvp->vp_integer = eapsim_start;
421 pairreplace(&(rep->vps), newvp);
423 /* insert selected version into response. */
424 newvp = paircreate(ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_SELECTED_VERSION,
426 versions = (uint16_t *)newvp->vp_strvalue;
427 versions[0] = htons(selectedversion);
429 pairreplace(&(rep->vps), newvp);
431 /* record the selected version */
432 memcpy(eapsim_mk.versionselect, (unsigned char *)versions, 2);
439 * insert a nonce_mt that we make up.
441 newvp = paircreate(ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_NONCE_MT,
443 newvp->vp_octets[0]=0;
444 newvp->vp_octets[1]=0;
445 newvp->length = 18; /* 16 bytes of nonce + padding */
451 memcpy(&newvp->vp_octets[2], nonce, 16);
452 pairreplace(&(rep->vps), newvp);
454 /* also keep a copy of the nonce! */
455 memcpy(eapsim_mk.nonce_mt, nonce, 16);
459 uint16_t *pidlen, idlen;
462 * insert the identity here.
464 vp = pairfind(rep->vps, PW_USER_NAME, 0);
467 fprintf(stderr, "eap-sim: We need to have a User-Name attribute!\n");
470 newvp = paircreate(ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_IDENTITY,
472 idlen = strlen(vp->vp_strvalue);
473 pidlen = (uint16_t *)newvp->vp_strvalue;
474 *pidlen = htons(idlen);
475 newvp->length = idlen + 2;
477 memcpy(&newvp->vp_strvalue[2], vp->vp_strvalue, idlen);
478 pairreplace(&(rep->vps), newvp);
481 memcpy(eapsim_mk.identity, vp->vp_strvalue, idlen);
482 eapsim_mk.identitylen = idlen;
489 * we got an EAP-Request/Sim/Challenge message in a legal state.
491 * use the RAND challenge to produce the SRES result, and then
492 * use that to generate a new MAC.
494 * for the moment, we ignore the RANDs, then just plug in the SRES
498 static int process_eap_challenge(RADIUS_PACKET *req,
502 VALUE_PAIR *mac, *randvp;
503 VALUE_PAIR *sres1,*sres2,*sres3;
504 VALUE_PAIR *Kc1, *Kc2, *Kc3;
507 /* look for the AT_MAC and the challenge data */
508 mac = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_MAC, 0);
509 randvp= pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_RAND, 0);
510 if(mac == NULL || randvp == NULL) {
511 fprintf(stderr, "radeapclient: challenge message needs to contain RAND and MAC\n");
516 * compare RAND with randX, to verify this is the right response
520 VALUE_PAIR *randcfgvp[3];
523 randcfg[0] = &randvp->vp_octets[2];
524 randcfg[1] = &randvp->vp_octets[2+EAPSIM_RAND_SIZE];
525 randcfg[2] = &randvp->vp_octets[2+EAPSIM_RAND_SIZE*2];
527 randcfgvp[0] = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_RAND1, 0);
528 randcfgvp[1] = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_RAND2, 0);
529 randcfgvp[2] = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_RAND3, 0);
531 if(randcfgvp[0] == NULL ||
532 randcfgvp[1] == NULL ||
533 randcfgvp[2] == NULL) {
534 fprintf(stderr, "radeapclient: needs to have rand1, 2 and 3 set.\n");
538 if(memcmp(randcfg[0], randcfgvp[0]->vp_octets, EAPSIM_RAND_SIZE)!=0 ||
539 memcmp(randcfg[1], randcfgvp[1]->vp_octets, EAPSIM_RAND_SIZE)!=0 ||
540 memcmp(randcfg[2], randcfgvp[2]->vp_octets, EAPSIM_RAND_SIZE)!=0) {
543 fprintf(stderr, "radeapclient: one of rand 1,2,3 didn't match\n");
544 for(rnum = 0; rnum < 3; rnum++) {
545 fprintf(stderr, "received rand %d: ", rnum);
547 for (i = 0; i < EAPSIM_RAND_SIZE; i++) {
554 fprintf(stderr, "%02x", randcfg[rnum][i]);
556 fprintf(stderr, "\nconfigured rand %d: ", rnum);
558 for (i = 0; i < EAPSIM_RAND_SIZE; i++) {
565 fprintf(stderr, "%02x", randcfgvp[rnum]->vp_octets[i]);
567 fprintf(stderr, "\n");
574 * now dig up the sres values from the response packet,
575 * which were put there when we read things in.
577 * Really, they should be calculated from the RAND!
580 sres1 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_SRES1, 0);
581 sres2 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_SRES2, 0);
582 sres3 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_SRES3, 0);
587 fprintf(stderr, "radeapclient: needs to have sres1, 2 and 3 set.\n");
590 memcpy(eapsim_mk.sres[0], sres1->vp_strvalue, sizeof(eapsim_mk.sres[0]));
591 memcpy(eapsim_mk.sres[1], sres2->vp_strvalue, sizeof(eapsim_mk.sres[1]));
592 memcpy(eapsim_mk.sres[2], sres3->vp_strvalue, sizeof(eapsim_mk.sres[2]));
594 Kc1 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_KC1, 0);
595 Kc2 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_KC2, 0);
596 Kc3 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_KC3, 0);
601 fprintf(stderr, "radeapclient: needs to have Kc1, 2 and 3 set.\n");
604 memcpy(eapsim_mk.Kc[0], Kc1->vp_strvalue, sizeof(eapsim_mk.Kc[0]));
605 memcpy(eapsim_mk.Kc[1], Kc2->vp_strvalue, sizeof(eapsim_mk.Kc[1]));
606 memcpy(eapsim_mk.Kc[2], Kc3->vp_strvalue, sizeof(eapsim_mk.Kc[2]));
608 /* all set, calculate keys */
609 eapsim_calculate_keys(&eapsim_mk);
612 eapsim_dump_mk(&eapsim_mk);
615 /* verify the MAC, now that we have all the keys. */
616 if(eapsim_checkmac(req->vps, eapsim_mk.K_aut,
617 eapsim_mk.nonce_mt, sizeof(eapsim_mk.nonce_mt),
619 printf("MAC check succeed\n");
623 printf("calculated MAC (");
624 for (i = 0; i < 20; i++) {
631 printf("%02x", calcmac[i]);
633 printf(" did not match\n");
637 /* form new response clear of any EAP stuff */
640 /* mark the subtype as being EAP-SIM/Response/Start */
641 newvp = paircreate(ATTRIBUTE_EAP_SIM_SUBTYPE, 0, PW_TYPE_INTEGER);
642 newvp->vp_integer = eapsim_challenge;
643 pairreplace(&(rep->vps), newvp);
646 * fill the SIM_MAC with a field that will in fact get appended
647 * to the packet before the MAC is calculated
649 newvp = paircreate(ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_MAC, 0,
651 memcpy(newvp->vp_strvalue+EAPSIM_SRES_SIZE*0, sres1->vp_strvalue, EAPSIM_SRES_SIZE);
652 memcpy(newvp->vp_strvalue+EAPSIM_SRES_SIZE*1, sres2->vp_strvalue, EAPSIM_SRES_SIZE);
653 memcpy(newvp->vp_strvalue+EAPSIM_SRES_SIZE*2, sres3->vp_strvalue, EAPSIM_SRES_SIZE);
654 newvp->length = EAPSIM_SRES_SIZE*3;
655 pairreplace(&(rep->vps), newvp);
657 newvp = paircreate(ATTRIBUTE_EAP_SIM_KEY, 0, PW_TYPE_OCTETS);
658 memcpy(newvp->vp_strvalue, eapsim_mk.K_aut, EAPSIM_AUTH_SIZE);
659 newvp->length = EAPSIM_AUTH_SIZE;
660 pairreplace(&(rep->vps), newvp);
666 * this code runs the EAP-SIM client state machine.
667 * the *request* is from the server.
668 * the *reponse* is to the server.
671 static int respond_eap_sim(RADIUS_PACKET *req,
674 enum eapsim_clientstates state, newstate;
675 enum eapsim_subtype subtype;
676 VALUE_PAIR *vp, *statevp, *radstate, *eapid;
677 char statenamebuf[32], subtypenamebuf[32];
679 if ((radstate = paircopy2(req->vps, PW_STATE, 0)) == NULL)
684 if ((eapid = paircopy2(req->vps, ATTRIBUTE_EAP_ID, 0)) == NULL)
689 /* first, dig up the state from the request packet, setting
690 * outselves to be in EAP-SIM-Start state if there is none.
693 if((statevp = pairfind(resp->vps, ATTRIBUTE_EAP_SIM_STATE, 0)) == NULL)
695 /* must be initial request */
696 statevp = paircreate(ATTRIBUTE_EAP_SIM_STATE, 0, PW_TYPE_INTEGER);
697 statevp->vp_integer = eapsim_client_init;
698 pairreplace(&(resp->vps), statevp);
700 state = statevp->vp_integer;
703 * map the attributes, and authenticate them.
705 unmap_eapsim_types(req);
707 if((vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_SUBTYPE, 0)) == NULL)
711 subtype = vp->vp_integer;
714 * look for the appropriate state, and process incoming message
717 case eapsim_client_init:
720 newstate = process_eap_start(req, resp);
723 case eapsim_challenge:
724 case eapsim_notification:
727 fprintf(stderr, "radeapclient: sim in state %s message %s is illegal. Reply dropped.\n",
728 sim_state2name(state, statenamebuf, sizeof(statenamebuf)),
729 sim_subtype2name(subtype, subtypenamebuf, sizeof(subtypenamebuf)));
730 /* invalid state, drop message */
735 case eapsim_client_start:
738 /* NOT SURE ABOUT THIS ONE, retransmit, I guess */
739 newstate = process_eap_start(req, resp);
742 case eapsim_challenge:
743 newstate = process_eap_challenge(req, resp);
747 fprintf(stderr, "radeapclient: sim in state %s message %s is illegal. Reply dropped.\n",
748 sim_state2name(state, statenamebuf, sizeof(statenamebuf)),
749 sim_subtype2name(subtype, subtypenamebuf, sizeof(subtypenamebuf)));
750 /* invalid state, drop message */
757 fprintf(stderr, "radeapclient: sim in illegal state %s\n",
758 sim_state2name(state, statenamebuf, sizeof(statenamebuf)));
762 /* copy the eap state object in */
763 pairreplace(&(resp->vps), eapid);
765 /* update stete info, and send new packet */
766 map_eapsim_types(resp);
768 /* copy the radius state object in */
769 pairreplace(&(resp->vps), radstate);
771 statevp->vp_integer = newstate;
775 static int respond_eap_md5(RADIUS_PACKET *req,
778 VALUE_PAIR *vp, *id, *state;
779 size_t valuesize, namesize;
784 uint8_t response[16];
788 if ((state = paircopy2(req->vps, PW_STATE, 0)) == NULL)
790 fprintf(stderr, "radeapclient: no state attribute found\n");
794 if ((id = paircopy2(req->vps, ATTRIBUTE_EAP_ID, 0)) == NULL)
796 fprintf(stderr, "radeapclient: no EAP-ID attribute found\n");
799 identifier = id->vp_integer;
801 if ((vp = pairfind(req->vps, ATTRIBUTE_EAP_BASE+PW_EAP_MD5, 0)) == NULL)
803 fprintf(stderr, "radeapclient: no EAP-MD5 attribute found\n");
807 /* got the details of the MD5 challenge */
808 valuesize = vp->vp_octets[0];
809 value = &vp->vp_octets[1];
810 name = &vp->vp_octets[valuesize+1];
811 namesize = vp->length - (valuesize + 1);
814 if(valuesize > vp->length)
816 fprintf(stderr, "radeapclient: md5 valuesize if too big (%u > %u)\n",
817 (unsigned int) valuesize, (unsigned int) vp->length);
821 /* now do the CHAP operation ourself, rather than build the
822 * buffer. We could also call rad_chap_encode, but it wants
823 * a CHAP-Challenge, which we don't want to bother with.
825 fr_MD5Init(&context);
826 fr_MD5Update(&context, &identifier, 1);
827 fr_MD5Update(&context, (uint8_t *) password, strlen(password));
828 fr_MD5Update(&context, value, valuesize);
829 fr_MD5Final(response, &context);
831 vp = paircreate(ATTRIBUTE_EAP_BASE+PW_EAP_MD5, 0, PW_TYPE_OCTETS);
833 memcpy(&vp->vp_strvalue[1], response, 16);
836 pairreplace(&(rep->vps), vp);
838 pairreplace(&(rep->vps), id);
840 /* copy the state object in */
841 pairreplace(&(rep->vps), state);
848 static int sendrecv_eap(RADIUS_PACKET *rep)
850 RADIUS_PACKET *req = NULL;
851 VALUE_PAIR *vp, *vpnext;
852 int tried_eap_md5 = 0;
855 * Keep a copy of the the User-Password attribute.
857 if ((vp = pairfind(rep->vps, PW_CLEARTEXT_PASSWORD, 0)) != NULL) {
858 strlcpy(password, (char *)vp->vp_strvalue, sizeof(vp->vp_strvalue));
860 } else if ((vp = pairfind(rep->vps, PW_USER_PASSWORD, 0)) != NULL) {
861 strlcpy(password, (char *)vp->vp_strvalue, sizeof(vp->vp_strvalue));
863 * Otherwise keep a copy of the CHAP-Password attribute.
865 } else if ((vp = pairfind(rep->vps, PW_CHAP_PASSWORD, 0)) != NULL) {
866 strlcpy(password, (char *)vp->vp_strvalue, sizeof(vp->vp_strvalue));
875 * if there are EAP types, encode them into an EAP-Message
881 * Fix up Digest-Attributes issues
883 for (vp = rep->vps; vp != NULL; vp = vp->next) {
884 switch (vp->attribute) {
888 case PW_DIGEST_REALM:
889 case PW_DIGEST_NONCE:
890 case PW_DIGEST_METHOD:
893 case PW_DIGEST_ALGORITHM:
894 case PW_DIGEST_BODY_DIGEST:
895 case PW_DIGEST_CNONCE:
896 case PW_DIGEST_NONCE_COUNT:
897 case PW_DIGEST_USER_NAME:
899 memmove(&vp->vp_strvalue[2], &vp->vp_octets[0], vp->length);
900 vp->vp_octets[0] = vp->attribute - PW_DIGEST_REALM + 1;
902 vp->vp_octets[1] = vp->length;
903 vp->attribute = PW_DIGEST_ATTRIBUTES;
909 * If we've already sent a packet, free up the old
910 * one, and ensure that the next packet has a unique
911 * ID and authentication vector.
918 fr_md5_calc(rep->vector, rep->vector,
919 sizeof(rep->vector));
921 if (*password != '\0') {
922 if ((vp = pairfind(rep->vps, PW_CLEARTEXT_PASSWORD, 0)) != NULL) {
923 strlcpy((char *)vp->vp_strvalue, password, sizeof(vp->vp_strvalue));
924 vp->length = strlen(password);
926 } else if ((vp = pairfind(rep->vps, PW_USER_PASSWORD, 0)) != NULL) {
927 strlcpy((char *)vp->vp_strvalue, password, sizeof(vp->vp_strvalue));
928 vp->length = strlen(password);
930 } else if ((vp = pairfind(rep->vps, PW_CHAP_PASSWORD, 0)) != NULL) {
931 strlcpy((char *)vp->vp_strvalue, password, sizeof(vp->vp_strvalue));
932 vp->length = strlen(password);
934 rad_chap_encode(rep, vp->vp_octets, rep->id, vp);
937 } /* there WAS a password */
939 /* send the response, wait for the next request */
940 send_packet(rep, &req);
942 /* okay got back the packet, go and decode the EAP-Message. */
943 unmap_eap_types(req);
945 debug_packet(req, R_RECV);
947 /* now look for the code type. */
948 for (vp = req->vps; vp != NULL; vp = vpnext) {
951 switch (vp->attribute) {
955 case ATTRIBUTE_EAP_BASE+PW_EAP_MD5:
956 if(respond_eap_md5(req, rep) && tried_eap_md5 < 3)
963 case ATTRIBUTE_EAP_BASE+PW_EAP_SIM:
964 if(respond_eap_sim(req, rep))
976 int main(int argc, char **argv)
982 char *filename = NULL;
987 id = ((int)getpid() & 0xff);
990 radlog_dest = RADLOG_STDERR;
992 while ((c = getopt(argc, argv, "c:d:f:hi:qst:r:S:xXv")) != EOF)
996 if (!isdigit((int) *optarg))
998 count = atoi(optarg);
1001 radius_dir = strdup(optarg);
1016 sha1_data_problems = 1; /* for debugging only */
1023 if (!isdigit((int) *optarg))
1025 retries = atoi(optarg);
1028 if (!isdigit((int) *optarg))
1031 if ((id < 0) || (id > 255)) {
1039 if (!isdigit((int) *optarg))
1041 timeout = atof(optarg);
1044 printf("radclient: $Id$ built on " __DATE__ " at " __TIME__ "\n");
1048 fp = fopen(optarg, "r");
1050 fprintf(stderr, "radclient: Error opening %s: %s\n",
1051 optarg, strerror(errno));
1054 if (fgets(filesecret, sizeof(filesecret), fp) == NULL) {
1055 fprintf(stderr, "radclient: Error reading %s: %s\n",
1056 optarg, strerror(errno));
1061 /* truncate newline */
1062 p = filesecret + strlen(filesecret) - 1;
1063 while ((p >= filesecret) &&
1069 if (strlen(filesecret) < 2) {
1070 fprintf(stderr, "radclient: Secret in %s is too short\n", optarg);
1073 secret = filesecret;
1081 argc -= (optind - 1);
1082 argv += (optind - 1);
1085 ((secret == NULL) && (argc < 4))) {
1089 if (!radius_dir) radius_dir = strdup(RADDBDIR);
1091 if (dict_init(radius_dir, RADIUS_DICTIONARY) < 0) {
1092 fr_perror("radclient");
1096 if ((req = rad_alloc(1)) == NULL) {
1097 fr_perror("radclient");
1105 if((randinit = fopen("/dev/urandom", "r")) == NULL)
1107 perror("/dev/urandom");
1109 fread(randctx.randrsl, 256, 1, randinit);
1113 fr_randinit(&randctx, 1);
1119 * Strip port from hostname if needed.
1121 if ((p = strchr(argv[1], ':')) != NULL) {
1127 * See what kind of request we want to send.
1129 if (strcmp(argv[2], "auth") == 0) {
1130 if (port == 0) port = getport("radius");
1131 if (port == 0) port = PW_AUTH_UDP_PORT;
1132 req->code = PW_AUTHENTICATION_REQUEST;
1134 } else if (strcmp(argv[2], "acct") == 0) {
1135 if (port == 0) port = getport("radacct");
1136 if (port == 0) port = PW_ACCT_UDP_PORT;
1137 req->code = PW_ACCOUNTING_REQUEST;
1140 } else if (strcmp(argv[2], "status") == 0) {
1141 if (port == 0) port = getport("radius");
1142 if (port == 0) port = PW_AUTH_UDP_PORT;
1143 req->code = PW_STATUS_SERVER;
1145 } else if (strcmp(argv[2], "disconnect") == 0) {
1146 if (port == 0) port = PW_POD_UDP_PORT;
1147 req->code = PW_DISCONNECT_REQUEST;
1149 } else if (isdigit((int) argv[2][0])) {
1150 if (port == 0) port = getport("radius");
1151 if (port == 0) port = PW_AUTH_UDP_PORT;
1152 req->code = atoi(argv[2]);
1160 req->dst_port = port;
1161 if (ip_hton(argv[1], AF_INET, &req->dst_ipaddr) < 0) {
1162 fprintf(stderr, "radclient: Failed to find IP address for host %s\n", argv[1]);
1169 if (argv[3]) secret = argv[3];
1173 * Maybe read them, from stdin, if there's no
1174 * filename, or if the filename is '-'.
1176 if (filename && (strcmp(filename, "-") != 0)) {
1177 fp = fopen(filename, "r");
1179 fprintf(stderr, "radclient: Error opening %s: %s\n",
1180 filename, strerror(errno));
1190 if ((req->sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
1191 perror("radclient: socket: ");
1196 if(req->vps) pairfree(&req->vps);
1198 if ((req->vps = readvp2(fp, &filedone, "radeapclient:"))
1208 printf("\n\t Total approved auths: %d\n", totalapp);
1209 printf("\t Total denied auths: %d\n", totaldeny);
1215 * given a radius request with some attributes in the EAP range, build
1216 * them all into a single EAP-Message body.
1218 * Note that this function will build multiple EAP-Message bodies
1219 * if there are multiple eligible EAP-types. This is incorrect, as the
1220 * recipient will in fact concatenate them.
1222 * XXX - we could break the loop once we process one type. Maybe this
1223 * just deserves an assert?
1226 static void map_eap_types(RADIUS_PACKET *req)
1228 VALUE_PAIR *vp, *vpnext;
1233 vp = pairfind(req->vps, ATTRIBUTE_EAP_ID, 0);
1235 id = ((int)getpid() & 0xff);
1237 id = vp->vp_integer;
1240 vp = pairfind(req->vps, ATTRIBUTE_EAP_CODE, 0);
1242 eapcode = PW_EAP_REQUEST;
1244 eapcode = vp->vp_integer;
1248 for(vp = req->vps; vp != NULL; vp = vpnext) {
1249 /* save it in case it changes! */
1252 if(vp->attribute >= ATTRIBUTE_EAP_BASE &&
1253 vp->attribute < ATTRIBUTE_EAP_BASE+256) {
1262 eap_type = vp->attribute - ATTRIBUTE_EAP_BASE;
1265 case PW_EAP_IDENTITY:
1266 case PW_EAP_NOTIFICATION:
1277 * no known special handling, it is just encoded as an
1278 * EAP-message with the given type.
1281 /* nuke any existing EAP-Messages */
1282 pairdelete(&req->vps, PW_EAP_MESSAGE, 0);
1284 memset(&ep, 0, sizeof(ep));
1287 ep.type.type = eap_type;
1288 ep.type.length = vp->length;
1289 ep.type.data = malloc(vp->length);
1290 memcpy(ep.type.data,vp->vp_octets, vp->length);
1291 eap_basic_compose(req, &ep);
1296 * given a radius request with an EAP-Message body, decode it specific
1299 static void unmap_eap_types(RADIUS_PACKET *rep)
1306 /* find eap message */
1307 e = eap_vp2packet(rep->vps);
1309 /* nothing to do! */
1310 if(e == NULL) return;
1312 /* create EAP-ID and EAP-CODE attributes to start */
1313 eap1 = paircreate(ATTRIBUTE_EAP_ID, 0, PW_TYPE_INTEGER);
1314 eap1->vp_integer = e->id;
1315 pairadd(&(rep->vps), eap1);
1317 eap1 = paircreate(ATTRIBUTE_EAP_CODE, 0, PW_TYPE_INTEGER);
1318 eap1->vp_integer = e->code;
1319 pairadd(&(rep->vps), eap1);
1324 case PW_EAP_SUCCESS:
1325 case PW_EAP_FAILURE:
1329 case PW_EAP_REQUEST:
1330 case PW_EAP_RESPONSE:
1331 /* there is a type field, which we use to create
1332 * a new attribute */
1334 /* the length was decode already into the attribute
1335 * length, and was checked already. Network byte
1336 * order, just pull it out using math.
1338 len = e->length[0]*256 + e->length[1];
1340 /* verify the length is big enough to hold type */
1349 type += ATTRIBUTE_EAP_BASE;
1352 if(len > MAX_STRING_LEN) {
1353 len = MAX_STRING_LEN;
1356 eap1 = paircreate(type, 0, PW_TYPE_OCTETS);
1357 memcpy(eap1->vp_strvalue, &e->data[1], len);
1359 pairadd(&(rep->vps), eap1);
1367 static int map_eapsim_types(RADIUS_PACKET *r)
1372 memset(&ep, 0, sizeof(ep));
1373 ret = map_eapsim_basictypes(r, &ep);
1377 eap_basic_compose(r, &ep);
1382 static int unmap_eapsim_types(RADIUS_PACKET *r)
1386 esvp = pairfind(r->vps, ATTRIBUTE_EAP_BASE+PW_EAP_SIM, 0);
1388 radlog(L_ERR, "eap: EAP-Sim attribute not found");
1392 return unmap_eapsim_basictypes(r, esvp->vp_octets, esvp->length);
1399 const char *radius_dir = RADDBDIR;
1401 int radlog(int lvl, const char *msg, ...)
1407 r = vfprintf(stderr, msg, ap);
1409 fputc('\n', stderr);
1414 main(int argc, char *argv[])
1417 RADIUS_PACKET *req,*req2;
1418 VALUE_PAIR *vp, *vpkey, *vpextra;
1419 extern unsigned int sha1_data_problems;
1426 sha1_data_problems = 1;
1429 if (dict_init(radius_dir, RADIUS_DICTIONARY) < 0) {
1430 fr_perror("radclient");
1434 if ((req = rad_alloc(1)) == NULL) {
1435 fr_perror("radclient");
1439 if ((req2 = rad_alloc(1)) == NULL) {
1440 fr_perror("radclient");
1445 if(req->vps) pairfree(&req->vps);
1446 if(req2->vps) pairfree(&req2->vps);
1448 if ((req->vps = readvp2(stdin, &filedone, "eapsimlib:")) == NULL) {
1452 if (fr_debug_flag > 1) {
1453 printf("\nRead:\n");
1454 vp_printlist(stdout, req->vps);
1457 map_eapsim_types(req);
1460 if (fr_debug_flag > 1) {
1461 printf("Mapped to:\n");
1462 vp_printlist(stdout, req->vps);
1465 /* find the EAP-Message, copy it to req2 */
1466 vp = paircopy2(req->vps, PW_EAP_MESSAGE);
1468 if(vp == NULL) continue;
1470 pairadd(&req2->vps, vp);
1472 /* only call unmap for sim types here */
1473 unmap_eap_types(req2);
1474 unmap_eapsim_types(req2);
1476 if (fr_debug_flag > 1) {
1477 printf("Unmapped to:\n");
1478 vp_printlist(stdout, req2->vps);
1481 vp = pairfind(req2->vps,
1482 ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_MAC, 0);
1483 vpkey = pairfind(req->vps, ATTRIBUTE_EAP_SIM_KEY, 0);
1484 vpextra = pairfind(req->vps, ATTRIBUTE_EAP_SIM_EXTRA, 0);
1486 if(vp != NULL && vpkey != NULL && vpextra!=NULL) {
1487 uint8_t calcmac[16];
1489 /* find the EAP-Message, copy it to req2 */
1491 memset(calcmac, 0, sizeof(calcmac));
1492 printf("Confirming MAC...");
1493 if(eapsim_checkmac(req2->vps, vpkey->vp_strvalue,
1494 vpextra->vp_strvalue, vpextra->length,
1496 printf("succeed\n");
1500 printf("calculated MAC (");
1501 for (i = 0; i < 20; i++) {
1508 printf("%02x", calcmac[i]);
1510 printf(" did not match\n");