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 const char *radius_dir = RADDBDIR;
55 const char *progname = "radeapclient";
56 /* fr_randctx randctx; */
59 radlog_dest_t radlog_dest = RADLOG_STDERR;
60 const char *radlog_dir = NULL;
64 struct eapsim_keys eapsim_mk;
66 static void map_eap_types(RADIUS_PACKET *req);
67 static void unmap_eap_types(RADIUS_PACKET *rep);
68 static int map_eapsim_types(RADIUS_PACKET *r);
69 static int unmap_eapsim_types(RADIUS_PACKET *r);
71 void debug_pair_list(UNUSED VALUE_PAIR *vp)
76 static void NEVER_RETURNS usage(void)
78 fprintf(stderr, "Usage: radeapclient [options] server[:port] <command> [<secret>]\n");
80 fprintf(stderr, " <command> One of auth, acct, status, or disconnect.\n");
81 fprintf(stderr, " -c count Send each packet 'count' times.\n");
82 fprintf(stderr, " -d raddb Set dictionary directory.\n");
83 fprintf(stderr, " -f file Read packets from file, not stdin.\n");
84 fprintf(stderr, " -r retries If timeout, retry sending the packet 'retries' times.\n");
85 fprintf(stderr, " -t timeout Wait 'timeout' seconds before retrying (may be a floating point number).\n");
86 fprintf(stderr, " -i id Set request id to 'id'. Values may be 0..255\n");
87 fprintf(stderr, " -S file read secret from file, not command line.\n");
88 fprintf(stderr, " -q Do not print anything out.\n");
89 fprintf(stderr, " -s Print out summary information of auth results.\n");
90 fprintf(stderr, " -v Show program version information.\n");
91 fprintf(stderr, " -x Debugging mode.\n");
96 int radlog(int lvl, const char *msg, ...)
101 r = lvl; /* shut up compiler */
104 r = vfprintf(stderr, msg, ap);
111 int log_debug(const char *msg, ...)
117 r = vfprintf(stderr, msg, ap);
124 void radlog_request(UNUSED int lvl, UNUSED int priority,
125 UNUSED REQUEST *request, const char *msg, ...)
130 vfprintf(stderr, msg, ap);
135 static int getport(const char *name)
139 svp = getservbyname (name, "udp");
144 return ntohs(svp->s_port);
149 static void debug_packet(RADIUS_PACKET *packet, int direction)
153 const char *received, *from;
154 const fr_ipaddr_t *ip;
159 if (direction == 0) {
160 received = "Received";
161 from = "from"; /* what else? */
162 ip = &packet->src_ipaddr;
163 port = packet->src_port;
166 received = "Sending";
167 from = "to"; /* hah! */
168 ip = &packet->dst_ipaddr;
169 port = packet->dst_port;
173 * Client-specific debugging re-prints the input
174 * packet into the client log.
176 * This really belongs in a utility library
178 if ((packet->code > 0) && (packet->code < FR_MAX_PACKET_CODE)) {
179 printf("%s %s packet %s host %s port %d, id=%d, length=%d\n",
180 received, fr_packet_codes[packet->code], from,
181 inet_ntop(ip->af, &ip->ipaddr, buffer, sizeof(buffer)),
182 port, packet->id, packet->data_len);
184 printf("%s packet %s host %s port %d code=%d, id=%d, length=%d\n",
186 inet_ntop(ip->af, &ip->ipaddr, buffer, sizeof(buffer)),
188 packet->code, packet->id, packet->data_len);
191 for (vp = packet->vps; vp != NULL; vp = vp->next) {
192 vp_prints(buffer, sizeof(buffer), vp);
193 printf("\t%s\n", buffer);
199 static int send_packet(RADIUS_PACKET *req, RADIUS_PACKET **rep)
204 for (i = 0; i < retries; i++) {
207 rad_send(req, NULL, secret);
209 /* And wait for reply, timing out as necessary */
211 FD_SET(req->sockfd, &rdfdesc);
213 tv.tv_sec = (int)timeout;
214 tv.tv_usec = 1000000 * (timeout - (int) timeout);
216 /* Something's wrong if we don't get exactly one fd. */
217 if (select(req->sockfd + 1, &rdfdesc, NULL, NULL, &tv) != 1) {
221 *rep = rad_recv(req->sockfd, 0);
224 * If we get a response from a machine
225 * which we did NOT send a request to,
228 if (((*rep)->src_ipaddr.af != req->dst_ipaddr.af) ||
229 (memcmp(&(*rep)->src_ipaddr.ipaddr,
230 &req->dst_ipaddr.ipaddr,
231 ((req->dst_ipaddr.af == AF_INET ? /* AF_INET6? */
232 sizeof(req->dst_ipaddr.ipaddr.ip4addr) : /* FIXME: AF_INET6 */
233 sizeof(req->dst_ipaddr.ipaddr.ip6addr)))) != 0) ||
234 ((*rep)->src_port != req->dst_port)) {
235 char src[128], dst[128];
237 ip_ntoh(&(*rep)->src_ipaddr, src, sizeof(src));
238 ip_ntoh(&req->dst_ipaddr, dst, sizeof(dst));
239 fprintf(stderr, "radclient: ERROR: Sent request to host %s port %d, got response from host %s port %d\n!",
241 src, (*rep)->src_port);
245 } else { /* NULL: couldn't receive the packet */
246 fr_perror("radclient:");
251 /* No response or no data read (?) */
253 fprintf(stderr, "radclient: no response from server\n");
258 * FIXME: Discard the packet & listen for another.
260 * Hmm... we should really be using eapol_test, which does
261 * a lot more than radeapclient.
263 if (rad_verify(*rep, req, secret) != 0) {
264 fr_perror("rad_verify");
268 if (rad_decode(*rep, req, secret) != 0) {
269 fr_perror("rad_decode");
273 /* libradius debug already prints out the value pairs for us */
274 if (!fr_debug_flag && do_output) {
275 debug_packet(*rep, R_RECV);
277 if((*rep)->code == PW_AUTHENTICATION_ACK) {
279 } else if ((*rep)->code == PW_AUTHENTICATION_REJECT) {
286 static void cleanresp(RADIUS_PACKET *resp)
288 VALUE_PAIR *vpnext, *vp, **last;
292 * maybe should just copy things we care about, or keep
293 * a copy of the original input and start from there again?
295 pairdelete(&resp->vps, PW_EAP_MESSAGE, 0);
296 pairdelete(&resp->vps, ATTRIBUTE_EAP_BASE+PW_EAP_IDENTITY, 0);
299 for(vp = *last; vp != NULL; vp = vpnext)
303 if((vp->attribute > ATTRIBUTE_EAP_BASE &&
304 vp->attribute <= ATTRIBUTE_EAP_BASE+256) ||
305 (vp->attribute > ATTRIBUTE_EAP_SIM_BASE &&
306 vp->attribute <= ATTRIBUTE_EAP_SIM_BASE+256))
317 * we got an EAP-Request/Sim/Start message in a legal state.
319 * pick a supported version, put it into the reply, and insert a nonce.
321 static int process_eap_start(RADIUS_PACKET *req,
324 VALUE_PAIR *vp, *newvp;
325 VALUE_PAIR *anyidreq_vp, *fullauthidreq_vp, *permanentidreq_vp;
326 uint16_t *versions, selectedversion;
327 unsigned int i,versioncount;
329 /* form new response clear of any EAP stuff */
332 if((vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_VERSION_LIST, 0)) == NULL) {
333 fprintf(stderr, "illegal start message has no VERSION_LIST\n");
337 versions = (uint16_t *)vp->vp_strvalue;
339 /* verify that the attribute length is big enough for a length field */
342 fprintf(stderr, "start message has illegal VERSION_LIST. Too short: %u\n", (unsigned int) vp->length);
346 versioncount = ntohs(versions[0])/2;
347 /* verify that the attribute length is big enough for the given number
348 * of versions present.
350 if((unsigned)vp->length <= (versioncount*2 + 2))
352 fprintf(stderr, "start message is too short. Claimed %d versions does not fit in %u bytes\n", versioncount, (unsigned int) vp->length);
357 * record the versionlist for the MK calculation.
359 eapsim_mk.versionlistlen = versioncount*2;
360 memcpy(eapsim_mk.versionlist, (unsigned char *)(versions+1),
361 eapsim_mk.versionlistlen);
363 /* walk the version list, and pick the one we support, which
364 * at present, is 1, EAP_SIM_VERSION.
367 for(i=0; i < versioncount; i++)
369 if(ntohs(versions[i+1]) == EAP_SIM_VERSION)
371 selectedversion=EAP_SIM_VERSION;
375 if(selectedversion == 0)
377 fprintf(stderr, "eap-sim start message. No compatible version found. We need %d\n", EAP_SIM_VERSION);
378 for(i=0; i < versioncount; i++)
380 fprintf(stderr, "\tfound version %d\n",
381 ntohs(versions[i+1]));
386 * now make sure that we have only FULLAUTH_ID_REQ.
387 * I think that it actually might not matter - we can answer in
388 * anyway we like, but it is illegal to have more than one
391 anyidreq_vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_ANY_ID_REQ, 0);
392 fullauthidreq_vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_FULLAUTH_ID_REQ, 0);
393 permanentidreq_vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_PERMANENT_ID_REQ, 0);
395 if(fullauthidreq_vp == NULL ||
396 anyidreq_vp != NULL ||
397 permanentidreq_vp != NULL) {
398 fprintf(stderr, "start message has %sanyidreq, %sfullauthid and %spermanentid. Illegal combination.\n",
399 (anyidreq_vp != NULL ? "a " : "no "),
400 (fullauthidreq_vp != NULL ? "a " : "no "),
401 (permanentidreq_vp != NULL ? "a " : "no "));
405 /* okay, we have just any_id_req there, so fill in response */
407 /* mark the subtype as being EAP-SIM/Response/Start */
408 newvp = paircreate(ATTRIBUTE_EAP_SIM_SUBTYPE, 0, PW_TYPE_INTEGER);
409 newvp->vp_integer = eapsim_start;
410 pairreplace(&(rep->vps), newvp);
412 /* insert selected version into response. */
413 newvp = paircreate(ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_SELECTED_VERSION,
415 versions = (uint16_t *)newvp->vp_strvalue;
416 versions[0] = htons(selectedversion);
418 pairreplace(&(rep->vps), newvp);
420 /* record the selected version */
421 memcpy(eapsim_mk.versionselect, (unsigned char *)versions, 2);
428 * insert a nonce_mt that we make up.
430 newvp = paircreate(ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_NONCE_MT,
432 newvp->vp_octets[0]=0;
433 newvp->vp_octets[1]=0;
434 newvp->length = 18; /* 16 bytes of nonce + padding */
440 memcpy(&newvp->vp_octets[2], nonce, 16);
441 pairreplace(&(rep->vps), newvp);
443 /* also keep a copy of the nonce! */
444 memcpy(eapsim_mk.nonce_mt, nonce, 16);
448 uint16_t *pidlen, idlen;
451 * insert the identity here.
453 vp = pairfind(rep->vps, PW_USER_NAME, 0);
456 fprintf(stderr, "eap-sim: We need to have a User-Name attribute!\n");
459 newvp = paircreate(ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_IDENTITY,
461 idlen = strlen(vp->vp_strvalue);
462 pidlen = (uint16_t *)newvp->vp_strvalue;
463 *pidlen = htons(idlen);
464 newvp->length = idlen + 2;
466 memcpy(&newvp->vp_strvalue[2], vp->vp_strvalue, idlen);
467 pairreplace(&(rep->vps), newvp);
470 memcpy(eapsim_mk.identity, vp->vp_strvalue, idlen);
471 eapsim_mk.identitylen = idlen;
478 * we got an EAP-Request/Sim/Challenge message in a legal state.
480 * use the RAND challenge to produce the SRES result, and then
481 * use that to generate a new MAC.
483 * for the moment, we ignore the RANDs, then just plug in the SRES
487 static int process_eap_challenge(RADIUS_PACKET *req,
491 VALUE_PAIR *mac, *randvp;
492 VALUE_PAIR *sres1,*sres2,*sres3;
493 VALUE_PAIR *Kc1, *Kc2, *Kc3;
496 /* look for the AT_MAC and the challenge data */
497 mac = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_MAC, 0);
498 randvp= pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_RAND, 0);
499 if(mac == NULL || randvp == NULL) {
500 fprintf(stderr, "radeapclient: challenge message needs to contain RAND and MAC\n");
505 * compare RAND with randX, to verify this is the right response
509 VALUE_PAIR *randcfgvp[3];
512 randcfg[0] = &randvp->vp_octets[2];
513 randcfg[1] = &randvp->vp_octets[2+EAPSIM_RAND_SIZE];
514 randcfg[2] = &randvp->vp_octets[2+EAPSIM_RAND_SIZE*2];
516 randcfgvp[0] = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_RAND1, 0);
517 randcfgvp[1] = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_RAND2, 0);
518 randcfgvp[2] = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_RAND3, 0);
520 if(randcfgvp[0] == NULL ||
521 randcfgvp[1] == NULL ||
522 randcfgvp[2] == NULL) {
523 fprintf(stderr, "radeapclient: needs to have rand1, 2 and 3 set.\n");
527 if(memcmp(randcfg[0], randcfgvp[0]->vp_octets, EAPSIM_RAND_SIZE)!=0 ||
528 memcmp(randcfg[1], randcfgvp[1]->vp_octets, EAPSIM_RAND_SIZE)!=0 ||
529 memcmp(randcfg[2], randcfgvp[2]->vp_octets, EAPSIM_RAND_SIZE)!=0) {
532 fprintf(stderr, "radeapclient: one of rand 1,2,3 didn't match\n");
533 for(rnum = 0; rnum < 3; rnum++) {
534 fprintf(stderr, "received rand %d: ", rnum);
536 for (i = 0; i < EAPSIM_RAND_SIZE; i++) {
543 fprintf(stderr, "%02x", randcfg[rnum][i]);
545 fprintf(stderr, "\nconfigured rand %d: ", rnum);
547 for (i = 0; i < EAPSIM_RAND_SIZE; i++) {
554 fprintf(stderr, "%02x", randcfgvp[rnum]->vp_octets[i]);
556 fprintf(stderr, "\n");
563 * now dig up the sres values from the response packet,
564 * which were put there when we read things in.
566 * Really, they should be calculated from the RAND!
569 sres1 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_SRES1, 0);
570 sres2 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_SRES2, 0);
571 sres3 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_SRES3, 0);
576 fprintf(stderr, "radeapclient: needs to have sres1, 2 and 3 set.\n");
579 memcpy(eapsim_mk.sres[0], sres1->vp_strvalue, sizeof(eapsim_mk.sres[0]));
580 memcpy(eapsim_mk.sres[1], sres2->vp_strvalue, sizeof(eapsim_mk.sres[1]));
581 memcpy(eapsim_mk.sres[2], sres3->vp_strvalue, sizeof(eapsim_mk.sres[2]));
583 Kc1 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_KC1, 0);
584 Kc2 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_KC2, 0);
585 Kc3 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_KC3, 0);
590 fprintf(stderr, "radeapclient: needs to have Kc1, 2 and 3 set.\n");
593 memcpy(eapsim_mk.Kc[0], Kc1->vp_strvalue, sizeof(eapsim_mk.Kc[0]));
594 memcpy(eapsim_mk.Kc[1], Kc2->vp_strvalue, sizeof(eapsim_mk.Kc[1]));
595 memcpy(eapsim_mk.Kc[2], Kc3->vp_strvalue, sizeof(eapsim_mk.Kc[2]));
597 /* all set, calculate keys */
598 eapsim_calculate_keys(&eapsim_mk);
601 eapsim_dump_mk(&eapsim_mk);
604 /* verify the MAC, now that we have all the keys. */
605 if(eapsim_checkmac(req->vps, eapsim_mk.K_aut,
606 eapsim_mk.nonce_mt, sizeof(eapsim_mk.nonce_mt),
608 printf("MAC check succeed\n");
612 printf("calculated MAC (");
613 for (i = 0; i < 20; i++) {
620 printf("%02x", calcmac[i]);
622 printf(" did not match\n");
626 /* form new response clear of any EAP stuff */
629 /* mark the subtype as being EAP-SIM/Response/Start */
630 newvp = paircreate(ATTRIBUTE_EAP_SIM_SUBTYPE, 0, PW_TYPE_INTEGER);
631 newvp->vp_integer = eapsim_challenge;
632 pairreplace(&(rep->vps), newvp);
635 * fill the SIM_MAC with a field that will in fact get appended
636 * to the packet before the MAC is calculated
638 newvp = paircreate(ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_MAC, 0,
640 memcpy(newvp->vp_strvalue+EAPSIM_SRES_SIZE*0, sres1->vp_strvalue, EAPSIM_SRES_SIZE);
641 memcpy(newvp->vp_strvalue+EAPSIM_SRES_SIZE*1, sres2->vp_strvalue, EAPSIM_SRES_SIZE);
642 memcpy(newvp->vp_strvalue+EAPSIM_SRES_SIZE*2, sres3->vp_strvalue, EAPSIM_SRES_SIZE);
643 newvp->length = EAPSIM_SRES_SIZE*3;
644 pairreplace(&(rep->vps), newvp);
646 newvp = paircreate(ATTRIBUTE_EAP_SIM_KEY, 0, PW_TYPE_OCTETS);
647 memcpy(newvp->vp_strvalue, eapsim_mk.K_aut, EAPSIM_AUTH_SIZE);
648 newvp->length = EAPSIM_AUTH_SIZE;
649 pairreplace(&(rep->vps), newvp);
655 * this code runs the EAP-SIM client state machine.
656 * the *request* is from the server.
657 * the *reponse* is to the server.
660 static int respond_eap_sim(RADIUS_PACKET *req,
663 enum eapsim_clientstates state, newstate;
664 enum eapsim_subtype subtype;
665 VALUE_PAIR *vp, *statevp, *radstate, *eapid;
666 char statenamebuf[32], subtypenamebuf[32];
668 if ((radstate = paircopy2(req->vps, PW_STATE, 0)) == NULL)
673 if ((eapid = paircopy2(req->vps, ATTRIBUTE_EAP_ID, 0)) == NULL)
678 /* first, dig up the state from the request packet, setting
679 * outselves to be in EAP-SIM-Start state if there is none.
682 if((statevp = pairfind(resp->vps, ATTRIBUTE_EAP_SIM_STATE, 0)) == NULL)
684 /* must be initial request */
685 statevp = paircreate(ATTRIBUTE_EAP_SIM_STATE, 0, PW_TYPE_INTEGER);
686 statevp->vp_integer = eapsim_client_init;
687 pairreplace(&(resp->vps), statevp);
689 state = statevp->vp_integer;
692 * map the attributes, and authenticate them.
694 unmap_eapsim_types(req);
696 debug_packet(req, R_SENT);
698 if((vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_SUBTYPE, 0)) == NULL)
702 subtype = vp->vp_integer;
705 * look for the appropriate state, and process incoming message
708 case eapsim_client_init:
711 newstate = process_eap_start(req, resp);
714 case eapsim_challenge:
715 case eapsim_notification:
718 fprintf(stderr, "radeapclient: sim in state %s message %s is illegal. Reply dropped.\n",
719 sim_state2name(state, statenamebuf, sizeof(statenamebuf)),
720 sim_subtype2name(subtype, subtypenamebuf, sizeof(subtypenamebuf)));
721 /* invalid state, drop message */
726 case eapsim_client_start:
729 /* NOT SURE ABOUT THIS ONE, retransmit, I guess */
730 newstate = process_eap_start(req, resp);
733 case eapsim_challenge:
734 newstate = process_eap_challenge(req, resp);
738 fprintf(stderr, "radeapclient: sim in state %s message %s is illegal. Reply dropped.\n",
739 sim_state2name(state, statenamebuf, sizeof(statenamebuf)),
740 sim_subtype2name(subtype, subtypenamebuf, sizeof(subtypenamebuf)));
741 /* invalid state, drop message */
748 fprintf(stderr, "radeapclient: sim in illegal state %s\n",
749 sim_state2name(state, statenamebuf, sizeof(statenamebuf)));
753 /* copy the eap state object in */
754 pairreplace(&(resp->vps), eapid);
756 /* update stete info, and send new packet */
757 map_eapsim_types(resp);
759 /* copy the radius state object in */
760 pairreplace(&(resp->vps), radstate);
762 statevp->vp_integer = newstate;
766 static int respond_eap_md5(RADIUS_PACKET *req,
769 VALUE_PAIR *vp, *id, *state;
770 size_t valuesize, namesize;
775 uint8_t response[16];
779 if ((state = paircopy2(req->vps, PW_STATE, 0)) == NULL)
781 fprintf(stderr, "radeapclient: no state attribute found\n");
785 if ((id = paircopy2(req->vps, ATTRIBUTE_EAP_ID, 0)) == NULL)
787 fprintf(stderr, "radeapclient: no EAP-ID attribute found\n");
790 identifier = id->vp_integer;
792 if ((vp = pairfind(req->vps, ATTRIBUTE_EAP_BASE+PW_EAP_MD5, 0)) == NULL)
794 fprintf(stderr, "radeapclient: no EAP-MD5 attribute found\n");
798 /* got the details of the MD5 challenge */
799 valuesize = vp->vp_octets[0];
800 value = &vp->vp_octets[1];
801 name = &vp->vp_octets[valuesize+1];
802 namesize = vp->length - (valuesize + 1);
805 if(valuesize > vp->length)
807 fprintf(stderr, "radeapclient: md5 valuesize if too big (%u > %u)\n",
808 (unsigned int) valuesize, (unsigned int) vp->length);
812 /* now do the CHAP operation ourself, rather than build the
813 * buffer. We could also call rad_chap_encode, but it wants
814 * a CHAP-Challenge, which we don't want to bother with.
816 fr_MD5Init(&context);
817 fr_MD5Update(&context, &identifier, 1);
818 fr_MD5Update(&context, (uint8_t *) password, strlen(password));
819 fr_MD5Update(&context, value, valuesize);
820 fr_MD5Final(response, &context);
822 vp = paircreate(ATTRIBUTE_EAP_BASE+PW_EAP_MD5, 0, PW_TYPE_OCTETS);
824 memcpy(&vp->vp_strvalue[1], response, 16);
827 pairreplace(&(rep->vps), vp);
829 pairreplace(&(rep->vps), id);
831 /* copy the state object in */
832 pairreplace(&(rep->vps), state);
839 static int sendrecv_eap(RADIUS_PACKET *rep)
841 RADIUS_PACKET *req = NULL;
842 VALUE_PAIR *vp, *vpnext;
843 int tried_eap_md5 = 0;
846 * Keep a copy of the the User-Password attribute.
848 if ((vp = pairfind(rep->vps, PW_CLEARTEXT_PASSWORD, 0)) != NULL) {
849 strlcpy(password, (char *)vp->vp_strvalue, sizeof(vp->vp_strvalue));
851 } else if ((vp = pairfind(rep->vps, PW_USER_PASSWORD, 0)) != NULL) {
852 strlcpy(password, (char *)vp->vp_strvalue, sizeof(vp->vp_strvalue));
854 * Otherwise keep a copy of the CHAP-Password attribute.
856 } else if ((vp = pairfind(rep->vps, PW_CHAP_PASSWORD, 0)) != NULL) {
857 strlcpy(password, (char *)vp->vp_strvalue, sizeof(vp->vp_strvalue));
865 debug_packet(rep, R_SENT);
868 * if there are EAP types, encode them into an EAP-Message
874 * Fix up Digest-Attributes issues
876 for (vp = rep->vps; vp != NULL; vp = vp->next) {
877 switch (vp->attribute) {
881 case PW_DIGEST_REALM:
882 case PW_DIGEST_NONCE:
883 case PW_DIGEST_METHOD:
886 case PW_DIGEST_ALGORITHM:
887 case PW_DIGEST_BODY_DIGEST:
888 case PW_DIGEST_CNONCE:
889 case PW_DIGEST_NONCE_COUNT:
890 case PW_DIGEST_USER_NAME:
892 memmove(&vp->vp_strvalue[2], &vp->vp_octets[0], vp->length);
893 vp->vp_octets[0] = vp->attribute - PW_DIGEST_REALM + 1;
895 vp->vp_octets[1] = vp->length;
896 vp->attribute = PW_DIGEST_ATTRIBUTES;
902 * If we've already sent a packet, free up the old
903 * one, and ensure that the next packet has a unique
904 * ID and authentication vector.
911 fr_md5_calc(rep->vector, rep->vector,
912 sizeof(rep->vector));
914 if (*password != '\0') {
915 if ((vp = pairfind(rep->vps, PW_CLEARTEXT_PASSWORD, 0)) != NULL) {
916 strlcpy((char *)vp->vp_strvalue, password, sizeof(vp->vp_strvalue));
917 vp->length = strlen(password);
919 } else if ((vp = pairfind(rep->vps, PW_USER_PASSWORD, 0)) != NULL) {
920 strlcpy((char *)vp->vp_strvalue, password, sizeof(vp->vp_strvalue));
921 vp->length = strlen(password);
923 } else if ((vp = pairfind(rep->vps, PW_CHAP_PASSWORD, 0)) != NULL) {
924 strlcpy((char *)vp->vp_strvalue, password, sizeof(vp->vp_strvalue));
925 vp->length = strlen(password);
927 rad_chap_encode(rep, vp->vp_octets, rep->id, vp);
930 } /* there WAS a password */
932 /* send the response, wait for the next request */
933 send_packet(rep, &req);
935 /* okay got back the packet, go and decode the EAP-Message. */
936 unmap_eap_types(req);
938 debug_packet(req, R_RECV);
940 /* now look for the code type. */
941 for (vp = req->vps; vp != NULL; vp = vpnext) {
944 switch (vp->attribute) {
948 case ATTRIBUTE_EAP_BASE+PW_EAP_MD5:
949 if(respond_eap_md5(req, rep) && tried_eap_md5 < 3)
956 case ATTRIBUTE_EAP_BASE+PW_EAP_SIM:
957 if(respond_eap_sim(req, rep))
969 int main(int argc, char **argv)
975 char *filename = NULL;
980 id = ((int)getpid() & 0xff);
983 radlog_dest = RADLOG_STDERR;
985 while ((c = getopt(argc, argv, "c:d:f:hi:qst:r:S:xXv")) != EOF)
989 if (!isdigit((int) *optarg))
991 count = atoi(optarg);
1009 sha1_data_problems = 1; /* for debugging only */
1016 if (!isdigit((int) *optarg))
1018 retries = atoi(optarg);
1021 if (!isdigit((int) *optarg))
1024 if ((id < 0) || (id > 255)) {
1032 if (!isdigit((int) *optarg))
1034 timeout = atof(optarg);
1037 printf("radclient: $Id$ built on " __DATE__ " at " __TIME__ "\n");
1041 fp = fopen(optarg, "r");
1043 fprintf(stderr, "radclient: Error opening %s: %s\n",
1044 optarg, strerror(errno));
1047 if (fgets(filesecret, sizeof(filesecret), fp) == NULL) {
1048 fprintf(stderr, "radclient: Error reading %s: %s\n",
1049 optarg, strerror(errno));
1054 /* truncate newline */
1055 p = filesecret + strlen(filesecret) - 1;
1056 while ((p >= filesecret) &&
1062 if (strlen(filesecret) < 2) {
1063 fprintf(stderr, "radclient: Secret in %s is too short\n", optarg);
1066 secret = filesecret;
1074 argc -= (optind - 1);
1075 argv += (optind - 1);
1078 ((secret == NULL) && (argc < 4))) {
1082 if (dict_init(radius_dir, RADIUS_DICTIONARY) < 0) {
1083 fr_perror("radclient");
1087 if ((req = rad_alloc(1)) == NULL) {
1088 fr_perror("radclient");
1096 if((randinit = fopen("/dev/urandom", "r")) == NULL)
1098 perror("/dev/urandom");
1100 fread(randctx.randrsl, 256, 1, randinit);
1104 fr_randinit(&randctx, 1);
1110 * Strip port from hostname if needed.
1112 if ((p = strchr(argv[1], ':')) != NULL) {
1118 * See what kind of request we want to send.
1120 if (strcmp(argv[2], "auth") == 0) {
1121 if (port == 0) port = getport("radius");
1122 if (port == 0) port = PW_AUTH_UDP_PORT;
1123 req->code = PW_AUTHENTICATION_REQUEST;
1125 } else if (strcmp(argv[2], "acct") == 0) {
1126 if (port == 0) port = getport("radacct");
1127 if (port == 0) port = PW_ACCT_UDP_PORT;
1128 req->code = PW_ACCOUNTING_REQUEST;
1131 } else if (strcmp(argv[2], "status") == 0) {
1132 if (port == 0) port = getport("radius");
1133 if (port == 0) port = PW_AUTH_UDP_PORT;
1134 req->code = PW_STATUS_SERVER;
1136 } else if (strcmp(argv[2], "disconnect") == 0) {
1137 if (port == 0) port = PW_POD_UDP_PORT;
1138 req->code = PW_DISCONNECT_REQUEST;
1140 } else if (isdigit((int) argv[2][0])) {
1141 if (port == 0) port = getport("radius");
1142 if (port == 0) port = PW_AUTH_UDP_PORT;
1143 req->code = atoi(argv[2]);
1151 req->dst_port = port;
1152 if (ip_hton(argv[1], AF_INET, &req->dst_ipaddr) < 0) {
1153 fprintf(stderr, "radclient: Failed to find IP address for host %s\n", argv[1]);
1160 if (argv[3]) secret = argv[3];
1164 * Maybe read them, from stdin, if there's no
1165 * filename, or if the filename is '-'.
1167 if (filename && (strcmp(filename, "-") != 0)) {
1168 fp = fopen(filename, "r");
1170 fprintf(stderr, "radclient: Error opening %s: %s\n",
1171 filename, strerror(errno));
1181 if ((req->sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
1182 perror("radclient: socket: ");
1187 if(req->vps) pairfree(&req->vps);
1189 if ((req->vps = readvp2(fp, &filedone, "radeapclient:"))
1198 printf("\n\t Total approved auths: %d\n", totalapp);
1199 printf("\t Total denied auths: %d\n", totaldeny);
1205 * given a radius request with some attributes in the EAP range, build
1206 * them all into a single EAP-Message body.
1208 * Note that this function will build multiple EAP-Message bodies
1209 * if there are multiple eligible EAP-types. This is incorrect, as the
1210 * recipient will in fact concatenate them.
1212 * XXX - we could break the loop once we process one type. Maybe this
1213 * just deserves an assert?
1216 static void map_eap_types(RADIUS_PACKET *req)
1218 VALUE_PAIR *vp, *vpnext;
1223 vp = pairfind(req->vps, ATTRIBUTE_EAP_ID, 0);
1225 id = ((int)getpid() & 0xff);
1227 id = vp->vp_integer;
1230 vp = pairfind(req->vps, ATTRIBUTE_EAP_CODE, 0);
1232 eapcode = PW_EAP_REQUEST;
1234 eapcode = vp->vp_integer;
1238 for(vp = req->vps; vp != NULL; vp = vpnext) {
1239 /* save it in case it changes! */
1242 if(vp->attribute >= ATTRIBUTE_EAP_BASE &&
1243 vp->attribute < ATTRIBUTE_EAP_BASE+256) {
1252 eap_type = vp->attribute - ATTRIBUTE_EAP_BASE;
1255 case PW_EAP_IDENTITY:
1256 case PW_EAP_NOTIFICATION:
1267 * no known special handling, it is just encoded as an
1268 * EAP-message with the given type.
1271 /* nuke any existing EAP-Messages */
1272 pairdelete(&req->vps, PW_EAP_MESSAGE, 0);
1274 memset(&ep, 0, sizeof(ep));
1277 ep.type.type = eap_type;
1278 ep.type.length = vp->length;
1279 ep.type.data = malloc(vp->length);
1280 memcpy(ep.type.data,vp->vp_octets, vp->length);
1281 eap_basic_compose(req, &ep);
1286 * given a radius request with an EAP-Message body, decode it specific
1289 static void unmap_eap_types(RADIUS_PACKET *rep)
1296 /* find eap message */
1297 e = eap_vp2packet(rep->vps);
1299 /* nothing to do! */
1300 if(e == NULL) return;
1302 /* create EAP-ID and EAP-CODE attributes to start */
1303 eap1 = paircreate(ATTRIBUTE_EAP_ID, 0, PW_TYPE_INTEGER);
1304 eap1->vp_integer = e->id;
1305 pairadd(&(rep->vps), eap1);
1307 eap1 = paircreate(ATTRIBUTE_EAP_CODE, 0, PW_TYPE_INTEGER);
1308 eap1->vp_integer = e->code;
1309 pairadd(&(rep->vps), eap1);
1314 case PW_EAP_SUCCESS:
1315 case PW_EAP_FAILURE:
1319 case PW_EAP_REQUEST:
1320 case PW_EAP_RESPONSE:
1321 /* there is a type field, which we use to create
1322 * a new attribute */
1324 /* the length was decode already into the attribute
1325 * length, and was checked already. Network byte
1326 * order, just pull it out using math.
1328 len = e->length[0]*256 + e->length[1];
1330 /* verify the length is big enough to hold type */
1339 type += ATTRIBUTE_EAP_BASE;
1342 if(len > MAX_STRING_LEN) {
1343 len = MAX_STRING_LEN;
1346 eap1 = paircreate(type, 0, PW_TYPE_OCTETS);
1347 memcpy(eap1->vp_strvalue, &e->data[1], len);
1349 pairadd(&(rep->vps), eap1);
1357 static int map_eapsim_types(RADIUS_PACKET *r)
1362 memset(&ep, 0, sizeof(ep));
1363 ret = map_eapsim_basictypes(r, &ep);
1367 eap_basic_compose(r, &ep);
1372 static int unmap_eapsim_types(RADIUS_PACKET *r)
1376 esvp = pairfind(r->vps, ATTRIBUTE_EAP_BASE+PW_EAP_SIM, 0);
1378 radlog(L_ERR, "eap: EAP-Sim attribute not found");
1382 return unmap_eapsim_basictypes(r, esvp->vp_octets, esvp->length);
1389 const char *radius_dir = RADDBDIR;
1391 int radlog(int lvl, const char *msg, ...)
1397 r = vfprintf(stderr, msg, ap);
1399 fputc('\n', stderr);
1404 main(int argc, char *argv[])
1407 RADIUS_PACKET *req,*req2;
1408 VALUE_PAIR *vp, *vpkey, *vpextra;
1409 extern unsigned int sha1_data_problems;
1416 sha1_data_problems = 1;
1419 if (dict_init(radius_dir, RADIUS_DICTIONARY) < 0) {
1420 fr_perror("radclient");
1424 if ((req = rad_alloc(1)) == NULL) {
1425 fr_perror("radclient");
1429 if ((req2 = rad_alloc(1)) == NULL) {
1430 fr_perror("radclient");
1435 if(req->vps) pairfree(&req->vps);
1436 if(req2->vps) pairfree(&req2->vps);
1438 if ((req->vps = readvp2(stdin, &filedone, "eapsimlib:")) == NULL) {
1442 if (fr_debug_flag > 1) {
1443 printf("\nRead:\n");
1444 vp_printlist(stdout, req->vps);
1447 map_eapsim_types(req);
1450 if (fr_debug_flag > 1) {
1451 printf("Mapped to:\n");
1452 vp_printlist(stdout, req->vps);
1455 /* find the EAP-Message, copy it to req2 */
1456 vp = paircopy2(req->vps, PW_EAP_MESSAGE);
1458 if(vp == NULL) continue;
1460 pairadd(&req2->vps, vp);
1462 /* only call unmap for sim types here */
1463 unmap_eap_types(req2);
1464 unmap_eapsim_types(req2);
1466 if (fr_debug_flag > 1) {
1467 printf("Unmapped to:\n");
1468 vp_printlist(stdout, req2->vps);
1471 vp = pairfind(req2->vps,
1472 ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_MAC);
1473 vpkey = pairfind(req->vps, ATTRIBUTE_EAP_SIM_KEY);
1474 vpextra = pairfind(req->vps, ATTRIBUTE_EAP_SIM_EXTRA);
1476 if(vp != NULL && vpkey != NULL && vpextra!=NULL) {
1477 uint8_t calcmac[16];
1479 /* find the EAP-Message, copy it to req2 */
1481 memset(calcmac, 0, sizeof(calcmac));
1482 printf("Confirming MAC...");
1483 if(eapsim_checkmac(req2->vps, vpkey->vp_strvalue,
1484 vpextra->vp_strvalue, vpextra->length,
1486 printf("succeed\n");
1490 printf("calculated MAC (");
1491 for (i = 0; i < 20; i++) {
1498 printf("%02x", calcmac[i]);
1500 printf(" did not match\n");