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>
62 radlog_dest_t radlog_dest = RADLOG_STDERR;
63 const char *radlog_dir = NULL;
67 struct eapsim_keys eapsim_mk;
69 static void map_eap_types(RADIUS_PACKET *req);
70 static void unmap_eap_types(RADIUS_PACKET *rep);
71 static int map_eapsim_types(RADIUS_PACKET *r);
72 static int unmap_eapsim_types(RADIUS_PACKET *r);
74 void debug_pair_list(UNUSED VALUE_PAIR *vp)
79 static void NEVER_RETURNS usage(void)
81 fprintf(stderr, "Usage: radeapclient [options] server[:port] <command> [<secret>]\n");
83 fprintf(stderr, " <command> One of auth, acct, status, or disconnect.\n");
84 fprintf(stderr, " -c count Send each packet 'count' times.\n");
85 fprintf(stderr, " -d raddb Set dictionary directory.\n");
86 fprintf(stderr, " -f file Read packets from file, not stdin.\n");
87 fprintf(stderr, " -r retries If timeout, retry sending the packet 'retries' times.\n");
88 fprintf(stderr, " -t timeout Wait 'timeout' seconds before retrying (may be a floating point number).\n");
89 fprintf(stderr, " -h Print usage help information.\n");
90 fprintf(stderr, " -i id Set request id to 'id'. Values may be 0..255\n");
91 fprintf(stderr, " -S file read secret from file, not command line.\n");
92 fprintf(stderr, " -q Do not print anything out.\n");
93 fprintf(stderr, " -s Print out summary information of auth results.\n");
94 fprintf(stderr, " -v Show program version information.\n");
95 fprintf(stderr, " -x Debugging mode.\n");
100 int radlog(int lvl, const char *msg, ...)
105 r = lvl; /* shut up compiler */
108 r = vfprintf(stderr, msg, ap);
115 int log_debug(const char *msg, ...)
121 r = vfprintf(stderr, msg, ap);
128 void radlog_request(UNUSED int lvl, UNUSED int priority,
129 UNUSED REQUEST *request, const char *msg, ...)
134 vfprintf(stderr, msg, ap);
139 static int getport(const char *name)
143 svp = getservbyname (name, "udp");
148 return ntohs(svp->s_port);
153 static void debug_packet(RADIUS_PACKET *packet, int direction)
157 const char *received, *from;
158 const fr_ipaddr_t *ip;
163 if (direction == 0) {
164 received = "Received";
165 from = "from"; /* what else? */
166 ip = &packet->src_ipaddr;
167 port = packet->src_port;
170 received = "Sending";
171 from = "to"; /* hah! */
172 ip = &packet->dst_ipaddr;
173 port = packet->dst_port;
177 * Client-specific debugging re-prints the input
178 * packet into the client log.
180 * This really belongs in a utility library
182 if ((packet->code > 0) && (packet->code < FR_MAX_PACKET_CODE)) {
183 printf("%s %s packet %s host %s port %d, id=%d, length=%d\n",
184 received, fr_packet_codes[packet->code], from,
185 inet_ntop(ip->af, &ip->ipaddr, buffer, sizeof(buffer)),
186 port, packet->id, (int) packet->data_len);
188 printf("%s packet %s host %s port %d code=%d, id=%d, length=%d\n",
190 inet_ntop(ip->af, &ip->ipaddr, buffer, sizeof(buffer)),
192 packet->code, packet->id, (int) packet->data_len);
195 for (vp = packet->vps; vp != NULL; vp = vp->next) {
196 vp_prints(buffer, sizeof(buffer), vp);
197 printf("\t%s\n", buffer);
203 static int send_packet(RADIUS_PACKET *req, RADIUS_PACKET **rep)
208 for (i = 0; i < retries; i++) {
211 debug_packet(req, R_SENT);
213 rad_send(req, NULL, secret);
215 /* And wait for reply, timing out as necessary */
217 FD_SET(req->sockfd, &rdfdesc);
219 tv.tv_sec = (int)timeout;
220 tv.tv_usec = 1000000 * (timeout - (int) timeout);
222 /* Something's wrong if we don't get exactly one fd. */
223 if (select(req->sockfd + 1, &rdfdesc, NULL, NULL, &tv) != 1) {
227 *rep = rad_recv(req->sockfd, 0);
230 * If we get a response from a machine
231 * which we did NOT send a request to,
234 if (((*rep)->src_ipaddr.af != req->dst_ipaddr.af) ||
235 (memcmp(&(*rep)->src_ipaddr.ipaddr,
236 &req->dst_ipaddr.ipaddr,
237 ((req->dst_ipaddr.af == AF_INET ? /* AF_INET6? */
238 sizeof(req->dst_ipaddr.ipaddr.ip4addr) : /* FIXME: AF_INET6 */
239 sizeof(req->dst_ipaddr.ipaddr.ip6addr)))) != 0) ||
240 ((*rep)->src_port != req->dst_port)) {
241 char src[128], dst[128];
243 ip_ntoh(&(*rep)->src_ipaddr, src, sizeof(src));
244 ip_ntoh(&req->dst_ipaddr, dst, sizeof(dst));
245 fprintf(stderr, "radclient: ERROR: Sent request to host %s port %d, got response from host %s port %d\n!",
247 src, (*rep)->src_port);
251 } else { /* NULL: couldn't receive the packet */
252 fr_perror("radclient:");
257 /* No response or no data read (?) */
259 fprintf(stderr, "radclient: no response from server\n");
264 * FIXME: Discard the packet & listen for another.
266 * Hmm... we should really be using eapol_test, which does
267 * a lot more than radeapclient.
269 if (rad_verify(*rep, req, secret) != 0) {
270 fr_perror("rad_verify");
274 if (rad_decode(*rep, req, secret) != 0) {
275 fr_perror("rad_decode");
279 /* libradius debug already prints out the value pairs for us */
280 if (!fr_debug_flag && do_output) {
281 debug_packet(*rep, R_RECV);
283 if((*rep)->code == PW_AUTHENTICATION_ACK) {
285 } else if ((*rep)->code == PW_AUTHENTICATION_REJECT) {
292 static void cleanresp(RADIUS_PACKET *resp)
294 VALUE_PAIR *vpnext, *vp, **last;
298 * maybe should just copy things we care about, or keep
299 * a copy of the original input and start from there again?
301 pairdelete(&resp->vps, PW_EAP_MESSAGE, 0);
302 pairdelete(&resp->vps, ATTRIBUTE_EAP_BASE+PW_EAP_IDENTITY, 0);
305 for(vp = *last; vp != NULL; vp = vpnext)
309 if((vp->attribute > ATTRIBUTE_EAP_BASE &&
310 vp->attribute <= ATTRIBUTE_EAP_BASE+256) ||
311 (vp->attribute > ATTRIBUTE_EAP_SIM_BASE &&
312 vp->attribute <= ATTRIBUTE_EAP_SIM_BASE+256))
323 * we got an EAP-Request/Sim/Start message in a legal state.
325 * pick a supported version, put it into the reply, and insert a nonce.
327 static int process_eap_start(RADIUS_PACKET *req,
330 VALUE_PAIR *vp, *newvp;
331 VALUE_PAIR *anyidreq_vp, *fullauthidreq_vp, *permanentidreq_vp;
332 uint16_t *versions, selectedversion;
333 unsigned int i,versioncount;
335 /* form new response clear of any EAP stuff */
338 if((vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_VERSION_LIST, 0)) == NULL) {
339 fprintf(stderr, "illegal start message has no VERSION_LIST\n");
343 versions = (uint16_t *)vp->vp_strvalue;
345 /* verify that the attribute length is big enough for a length field */
348 fprintf(stderr, "start message has illegal VERSION_LIST. Too short: %u\n", (unsigned int) vp->length);
352 versioncount = ntohs(versions[0])/2;
353 /* verify that the attribute length is big enough for the given number
354 * of versions present.
356 if((unsigned)vp->length <= (versioncount*2 + 2))
358 fprintf(stderr, "start message is too short. Claimed %d versions does not fit in %u bytes\n", versioncount, (unsigned int) vp->length);
363 * record the versionlist for the MK calculation.
365 eapsim_mk.versionlistlen = versioncount*2;
366 memcpy(eapsim_mk.versionlist, (unsigned char *)(versions+1),
367 eapsim_mk.versionlistlen);
369 /* walk the version list, and pick the one we support, which
370 * at present, is 1, EAP_SIM_VERSION.
373 for(i=0; i < versioncount; i++)
375 if(ntohs(versions[i+1]) == EAP_SIM_VERSION)
377 selectedversion=EAP_SIM_VERSION;
381 if(selectedversion == 0)
383 fprintf(stderr, "eap-sim start message. No compatible version found. We need %d\n", EAP_SIM_VERSION);
384 for(i=0; i < versioncount; i++)
386 fprintf(stderr, "\tfound version %d\n",
387 ntohs(versions[i+1]));
392 * now make sure that we have only FULLAUTH_ID_REQ.
393 * I think that it actually might not matter - we can answer in
394 * anyway we like, but it is illegal to have more than one
397 anyidreq_vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_ANY_ID_REQ, 0);
398 fullauthidreq_vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_FULLAUTH_ID_REQ, 0);
399 permanentidreq_vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_PERMANENT_ID_REQ, 0);
401 if(fullauthidreq_vp == NULL ||
402 anyidreq_vp != NULL ||
403 permanentidreq_vp != NULL) {
404 fprintf(stderr, "start message has %sanyidreq, %sfullauthid and %spermanentid. Illegal combination.\n",
405 (anyidreq_vp != NULL ? "a " : "no "),
406 (fullauthidreq_vp != NULL ? "a " : "no "),
407 (permanentidreq_vp != NULL ? "a " : "no "));
411 /* okay, we have just any_id_req there, so fill in response */
413 /* mark the subtype as being EAP-SIM/Response/Start */
414 newvp = paircreate(ATTRIBUTE_EAP_SIM_SUBTYPE, 0, PW_TYPE_INTEGER);
415 newvp->vp_integer = eapsim_start;
416 pairreplace(&(rep->vps), newvp);
418 /* insert selected version into response. */
419 newvp = paircreate(ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_SELECTED_VERSION,
421 versions = (uint16_t *)newvp->vp_strvalue;
422 versions[0] = htons(selectedversion);
424 pairreplace(&(rep->vps), newvp);
426 /* record the selected version */
427 memcpy(eapsim_mk.versionselect, (unsigned char *)versions, 2);
434 * insert a nonce_mt that we make up.
436 newvp = paircreate(ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_NONCE_MT,
438 newvp->vp_octets[0]=0;
439 newvp->vp_octets[1]=0;
440 newvp->length = 18; /* 16 bytes of nonce + padding */
446 memcpy(&newvp->vp_octets[2], nonce, 16);
447 pairreplace(&(rep->vps), newvp);
449 /* also keep a copy of the nonce! */
450 memcpy(eapsim_mk.nonce_mt, nonce, 16);
454 uint16_t *pidlen, idlen;
457 * insert the identity here.
459 vp = pairfind(rep->vps, PW_USER_NAME, 0);
462 fprintf(stderr, "eap-sim: We need to have a User-Name attribute!\n");
465 newvp = paircreate(ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_IDENTITY,
467 idlen = strlen(vp->vp_strvalue);
468 pidlen = (uint16_t *)newvp->vp_strvalue;
469 *pidlen = htons(idlen);
470 newvp->length = idlen + 2;
472 memcpy(&newvp->vp_strvalue[2], vp->vp_strvalue, idlen);
473 pairreplace(&(rep->vps), newvp);
476 memcpy(eapsim_mk.identity, vp->vp_strvalue, idlen);
477 eapsim_mk.identitylen = idlen;
484 * we got an EAP-Request/Sim/Challenge message in a legal state.
486 * use the RAND challenge to produce the SRES result, and then
487 * use that to generate a new MAC.
489 * for the moment, we ignore the RANDs, then just plug in the SRES
493 static int process_eap_challenge(RADIUS_PACKET *req,
497 VALUE_PAIR *mac, *randvp;
498 VALUE_PAIR *sres1,*sres2,*sres3;
499 VALUE_PAIR *Kc1, *Kc2, *Kc3;
502 /* look for the AT_MAC and the challenge data */
503 mac = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_MAC, 0);
504 randvp= pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_RAND, 0);
505 if(mac == NULL || randvp == NULL) {
506 fprintf(stderr, "radeapclient: challenge message needs to contain RAND and MAC\n");
511 * compare RAND with randX, to verify this is the right response
515 VALUE_PAIR *randcfgvp[3];
518 randcfg[0] = &randvp->vp_octets[2];
519 randcfg[1] = &randvp->vp_octets[2+EAPSIM_RAND_SIZE];
520 randcfg[2] = &randvp->vp_octets[2+EAPSIM_RAND_SIZE*2];
522 randcfgvp[0] = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_RAND1, 0);
523 randcfgvp[1] = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_RAND2, 0);
524 randcfgvp[2] = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_RAND3, 0);
526 if(randcfgvp[0] == NULL ||
527 randcfgvp[1] == NULL ||
528 randcfgvp[2] == NULL) {
529 fprintf(stderr, "radeapclient: needs to have rand1, 2 and 3 set.\n");
533 if(memcmp(randcfg[0], randcfgvp[0]->vp_octets, EAPSIM_RAND_SIZE)!=0 ||
534 memcmp(randcfg[1], randcfgvp[1]->vp_octets, EAPSIM_RAND_SIZE)!=0 ||
535 memcmp(randcfg[2], randcfgvp[2]->vp_octets, EAPSIM_RAND_SIZE)!=0) {
538 fprintf(stderr, "radeapclient: one of rand 1,2,3 didn't match\n");
539 for(rnum = 0; rnum < 3; rnum++) {
540 fprintf(stderr, "received rand %d: ", rnum);
542 for (i = 0; i < EAPSIM_RAND_SIZE; i++) {
549 fprintf(stderr, "%02x", randcfg[rnum][i]);
551 fprintf(stderr, "\nconfigured rand %d: ", rnum);
553 for (i = 0; i < EAPSIM_RAND_SIZE; i++) {
560 fprintf(stderr, "%02x", randcfgvp[rnum]->vp_octets[i]);
562 fprintf(stderr, "\n");
569 * now dig up the sres values from the response packet,
570 * which were put there when we read things in.
572 * Really, they should be calculated from the RAND!
575 sres1 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_SRES1, 0);
576 sres2 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_SRES2, 0);
577 sres3 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_SRES3, 0);
582 fprintf(stderr, "radeapclient: needs to have sres1, 2 and 3 set.\n");
585 memcpy(eapsim_mk.sres[0], sres1->vp_strvalue, sizeof(eapsim_mk.sres[0]));
586 memcpy(eapsim_mk.sres[1], sres2->vp_strvalue, sizeof(eapsim_mk.sres[1]));
587 memcpy(eapsim_mk.sres[2], sres3->vp_strvalue, sizeof(eapsim_mk.sres[2]));
589 Kc1 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_KC1, 0);
590 Kc2 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_KC2, 0);
591 Kc3 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_KC3, 0);
596 fprintf(stderr, "radeapclient: needs to have Kc1, 2 and 3 set.\n");
599 memcpy(eapsim_mk.Kc[0], Kc1->vp_strvalue, sizeof(eapsim_mk.Kc[0]));
600 memcpy(eapsim_mk.Kc[1], Kc2->vp_strvalue, sizeof(eapsim_mk.Kc[1]));
601 memcpy(eapsim_mk.Kc[2], Kc3->vp_strvalue, sizeof(eapsim_mk.Kc[2]));
603 /* all set, calculate keys */
604 eapsim_calculate_keys(&eapsim_mk);
607 eapsim_dump_mk(&eapsim_mk);
610 /* verify the MAC, now that we have all the keys. */
611 if(eapsim_checkmac(req->vps, eapsim_mk.K_aut,
612 eapsim_mk.nonce_mt, sizeof(eapsim_mk.nonce_mt),
614 printf("MAC check succeed\n");
618 printf("calculated MAC (");
619 for (i = 0; i < 20; i++) {
626 printf("%02x", calcmac[i]);
628 printf(" did not match\n");
632 /* form new response clear of any EAP stuff */
635 /* mark the subtype as being EAP-SIM/Response/Start */
636 newvp = paircreate(ATTRIBUTE_EAP_SIM_SUBTYPE, 0, PW_TYPE_INTEGER);
637 newvp->vp_integer = eapsim_challenge;
638 pairreplace(&(rep->vps), newvp);
641 * fill the SIM_MAC with a field that will in fact get appended
642 * to the packet before the MAC is calculated
644 newvp = paircreate(ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_MAC, 0,
646 memcpy(newvp->vp_strvalue+EAPSIM_SRES_SIZE*0, sres1->vp_strvalue, EAPSIM_SRES_SIZE);
647 memcpy(newvp->vp_strvalue+EAPSIM_SRES_SIZE*1, sres2->vp_strvalue, EAPSIM_SRES_SIZE);
648 memcpy(newvp->vp_strvalue+EAPSIM_SRES_SIZE*2, sres3->vp_strvalue, EAPSIM_SRES_SIZE);
649 newvp->length = EAPSIM_SRES_SIZE*3;
650 pairreplace(&(rep->vps), newvp);
652 newvp = paircreate(ATTRIBUTE_EAP_SIM_KEY, 0, PW_TYPE_OCTETS);
653 memcpy(newvp->vp_strvalue, eapsim_mk.K_aut, EAPSIM_AUTH_SIZE);
654 newvp->length = EAPSIM_AUTH_SIZE;
655 pairreplace(&(rep->vps), newvp);
661 * this code runs the EAP-SIM client state machine.
662 * the *request* is from the server.
663 * the *reponse* is to the server.
666 static int respond_eap_sim(RADIUS_PACKET *req,
669 enum eapsim_clientstates state, newstate;
670 enum eapsim_subtype subtype;
671 VALUE_PAIR *vp, *statevp, *radstate, *eapid;
672 char statenamebuf[32], subtypenamebuf[32];
674 if ((radstate = paircopy2(req->vps, PW_STATE, 0)) == NULL)
679 if ((eapid = paircopy2(req->vps, ATTRIBUTE_EAP_ID, 0)) == NULL)
684 /* first, dig up the state from the request packet, setting
685 * outselves to be in EAP-SIM-Start state if there is none.
688 if((statevp = pairfind(resp->vps, ATTRIBUTE_EAP_SIM_STATE, 0)) == NULL)
690 /* must be initial request */
691 statevp = paircreate(ATTRIBUTE_EAP_SIM_STATE, 0, PW_TYPE_INTEGER);
692 statevp->vp_integer = eapsim_client_init;
693 pairreplace(&(resp->vps), statevp);
695 state = statevp->vp_integer;
698 * map the attributes, and authenticate them.
700 unmap_eapsim_types(req);
702 if((vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_SUBTYPE, 0)) == NULL)
706 subtype = vp->vp_integer;
709 * look for the appropriate state, and process incoming message
712 case eapsim_client_init:
715 newstate = process_eap_start(req, resp);
718 case eapsim_challenge:
719 case eapsim_notification:
722 fprintf(stderr, "radeapclient: sim in state %s message %s is illegal. Reply dropped.\n",
723 sim_state2name(state, statenamebuf, sizeof(statenamebuf)),
724 sim_subtype2name(subtype, subtypenamebuf, sizeof(subtypenamebuf)));
725 /* invalid state, drop message */
730 case eapsim_client_start:
733 /* NOT SURE ABOUT THIS ONE, retransmit, I guess */
734 newstate = process_eap_start(req, resp);
737 case eapsim_challenge:
738 newstate = process_eap_challenge(req, resp);
742 fprintf(stderr, "radeapclient: sim in state %s message %s is illegal. Reply dropped.\n",
743 sim_state2name(state, statenamebuf, sizeof(statenamebuf)),
744 sim_subtype2name(subtype, subtypenamebuf, sizeof(subtypenamebuf)));
745 /* invalid state, drop message */
752 fprintf(stderr, "radeapclient: sim in illegal state %s\n",
753 sim_state2name(state, statenamebuf, sizeof(statenamebuf)));
757 /* copy the eap state object in */
758 pairreplace(&(resp->vps), eapid);
760 /* update stete info, and send new packet */
761 map_eapsim_types(resp);
763 /* copy the radius state object in */
764 pairreplace(&(resp->vps), radstate);
766 statevp->vp_integer = newstate;
770 static int respond_eap_md5(RADIUS_PACKET *req,
773 VALUE_PAIR *vp, *id, *state;
774 size_t valuesize, namesize;
779 uint8_t response[16];
783 if ((state = paircopy2(req->vps, PW_STATE, 0)) == NULL)
785 fprintf(stderr, "radeapclient: no state attribute found\n");
789 if ((id = paircopy2(req->vps, ATTRIBUTE_EAP_ID, 0)) == NULL)
791 fprintf(stderr, "radeapclient: no EAP-ID attribute found\n");
794 identifier = id->vp_integer;
796 if ((vp = pairfind(req->vps, ATTRIBUTE_EAP_BASE+PW_EAP_MD5, 0)) == NULL)
798 fprintf(stderr, "radeapclient: no EAP-MD5 attribute found\n");
802 /* got the details of the MD5 challenge */
803 valuesize = vp->vp_octets[0];
804 value = &vp->vp_octets[1];
805 name = &vp->vp_octets[valuesize+1];
806 namesize = vp->length - (valuesize + 1);
809 if(valuesize > vp->length)
811 fprintf(stderr, "radeapclient: md5 valuesize if too big (%u > %u)\n",
812 (unsigned int) valuesize, (unsigned int) vp->length);
816 /* now do the CHAP operation ourself, rather than build the
817 * buffer. We could also call rad_chap_encode, but it wants
818 * a CHAP-Challenge, which we don't want to bother with.
820 fr_MD5Init(&context);
821 fr_MD5Update(&context, &identifier, 1);
822 fr_MD5Update(&context, (uint8_t *) password, strlen(password));
823 fr_MD5Update(&context, value, valuesize);
824 fr_MD5Final(response, &context);
826 vp = paircreate(ATTRIBUTE_EAP_BASE+PW_EAP_MD5, 0, PW_TYPE_OCTETS);
828 memcpy(&vp->vp_strvalue[1], response, 16);
831 pairreplace(&(rep->vps), vp);
833 pairreplace(&(rep->vps), id);
835 /* copy the state object in */
836 pairreplace(&(rep->vps), state);
843 static int sendrecv_eap(RADIUS_PACKET *rep)
845 RADIUS_PACKET *req = NULL;
846 VALUE_PAIR *vp, *vpnext;
847 int tried_eap_md5 = 0;
850 * Keep a copy of the the User-Password attribute.
852 if ((vp = pairfind(rep->vps, PW_CLEARTEXT_PASSWORD, 0)) != NULL) {
853 strlcpy(password, (char *)vp->vp_strvalue, sizeof(vp->vp_strvalue));
855 } else if ((vp = pairfind(rep->vps, PW_USER_PASSWORD, 0)) != NULL) {
856 strlcpy(password, (char *)vp->vp_strvalue, sizeof(vp->vp_strvalue));
858 * Otherwise keep a copy of the CHAP-Password attribute.
860 } else if ((vp = pairfind(rep->vps, PW_CHAP_PASSWORD, 0)) != NULL) {
861 strlcpy(password, (char *)vp->vp_strvalue, sizeof(vp->vp_strvalue));
870 * if there are EAP types, encode them into an EAP-Message
876 * Fix up Digest-Attributes issues
878 for (vp = rep->vps; vp != NULL; vp = vp->next) {
879 switch (vp->attribute) {
883 case PW_DIGEST_REALM:
884 case PW_DIGEST_NONCE:
885 case PW_DIGEST_METHOD:
888 case PW_DIGEST_ALGORITHM:
889 case PW_DIGEST_BODY_DIGEST:
890 case PW_DIGEST_CNONCE:
891 case PW_DIGEST_NONCE_COUNT:
892 case PW_DIGEST_USER_NAME:
894 memmove(&vp->vp_strvalue[2], &vp->vp_octets[0], vp->length);
895 vp->vp_octets[0] = vp->attribute - PW_DIGEST_REALM + 1;
897 vp->vp_octets[1] = vp->length;
898 vp->attribute = PW_DIGEST_ATTRIBUTES;
904 * If we've already sent a packet, free up the old
905 * one, and ensure that the next packet has a unique
906 * ID and authentication vector.
913 fr_md5_calc(rep->vector, rep->vector,
914 sizeof(rep->vector));
916 if (*password != '\0') {
917 if ((vp = pairfind(rep->vps, PW_CLEARTEXT_PASSWORD, 0)) != NULL) {
918 strlcpy((char *)vp->vp_strvalue, password, sizeof(vp->vp_strvalue));
919 vp->length = strlen(password);
921 } else if ((vp = pairfind(rep->vps, PW_USER_PASSWORD, 0)) != NULL) {
922 strlcpy((char *)vp->vp_strvalue, password, sizeof(vp->vp_strvalue));
923 vp->length = strlen(password);
925 } else if ((vp = pairfind(rep->vps, PW_CHAP_PASSWORD, 0)) != NULL) {
926 strlcpy((char *)vp->vp_strvalue, password, sizeof(vp->vp_strvalue));
927 vp->length = strlen(password);
929 rad_chap_encode(rep, vp->vp_octets, rep->id, vp);
932 } /* there WAS a password */
934 /* send the response, wait for the next request */
935 send_packet(rep, &req);
937 /* okay got back the packet, go and decode the EAP-Message. */
938 unmap_eap_types(req);
940 debug_packet(req, R_RECV);
942 /* now look for the code type. */
943 for (vp = req->vps; vp != NULL; vp = vpnext) {
946 switch (vp->attribute) {
950 case ATTRIBUTE_EAP_BASE+PW_EAP_MD5:
951 if(respond_eap_md5(req, rep) && tried_eap_md5 < 3)
958 case ATTRIBUTE_EAP_BASE+PW_EAP_SIM:
959 if(respond_eap_sim(req, rep))
971 int main(int argc, char **argv)
977 char *filename = NULL;
982 id = ((int)getpid() & 0xff);
985 radlog_dest = RADLOG_STDERR;
987 while ((c = getopt(argc, argv, "c:d:f:hi:qst:r:S:xXv")) != EOF)
991 if (!isdigit((int) *optarg))
993 count = atoi(optarg);
996 radius_dir = strdup(optarg);
1011 sha1_data_problems = 1; /* for debugging only */
1018 if (!isdigit((int) *optarg))
1020 retries = atoi(optarg);
1023 if (!isdigit((int) *optarg))
1026 if ((id < 0) || (id > 255)) {
1034 if (!isdigit((int) *optarg))
1036 timeout = atof(optarg);
1039 printf("radclient: $Id$ built on " __DATE__ " at " __TIME__ "\n");
1043 fp = fopen(optarg, "r");
1045 fprintf(stderr, "radclient: Error opening %s: %s\n",
1046 optarg, strerror(errno));
1049 if (fgets(filesecret, sizeof(filesecret), fp) == NULL) {
1050 fprintf(stderr, "radclient: Error reading %s: %s\n",
1051 optarg, strerror(errno));
1056 /* truncate newline */
1057 p = filesecret + strlen(filesecret) - 1;
1058 while ((p >= filesecret) &&
1064 if (strlen(filesecret) < 2) {
1065 fprintf(stderr, "radclient: Secret in %s is too short\n", optarg);
1068 secret = filesecret;
1076 argc -= (optind - 1);
1077 argv += (optind - 1);
1080 ((secret == NULL) && (argc < 4))) {
1084 if (!radius_dir) radius_dir = strdup(RADDBDIR);
1086 if (dict_init(radius_dir, RADIUS_DICTIONARY) < 0) {
1087 fr_perror("radclient");
1091 if ((req = rad_alloc(1)) == NULL) {
1092 fr_perror("radclient");
1100 if((randinit = fopen("/dev/urandom", "r")) == NULL)
1102 perror("/dev/urandom");
1104 fread(randctx.randrsl, 256, 1, randinit);
1108 fr_randinit(&randctx, 1);
1114 * Strip port from hostname if needed.
1116 if ((p = strchr(argv[1], ':')) != NULL) {
1122 * See what kind of request we want to send.
1124 if (strcmp(argv[2], "auth") == 0) {
1125 if (port == 0) port = getport("radius");
1126 if (port == 0) port = PW_AUTH_UDP_PORT;
1127 req->code = PW_AUTHENTICATION_REQUEST;
1129 } else if (strcmp(argv[2], "acct") == 0) {
1130 if (port == 0) port = getport("radacct");
1131 if (port == 0) port = PW_ACCT_UDP_PORT;
1132 req->code = PW_ACCOUNTING_REQUEST;
1135 } else if (strcmp(argv[2], "status") == 0) {
1136 if (port == 0) port = getport("radius");
1137 if (port == 0) port = PW_AUTH_UDP_PORT;
1138 req->code = PW_STATUS_SERVER;
1140 } else if (strcmp(argv[2], "disconnect") == 0) {
1141 if (port == 0) port = PW_POD_UDP_PORT;
1142 req->code = PW_DISCONNECT_REQUEST;
1144 } else if (isdigit((int) argv[2][0])) {
1145 if (port == 0) port = getport("radius");
1146 if (port == 0) port = PW_AUTH_UDP_PORT;
1147 req->code = atoi(argv[2]);
1155 req->dst_port = port;
1156 if (ip_hton(argv[1], AF_INET, &req->dst_ipaddr) < 0) {
1157 fprintf(stderr, "radclient: Failed to find IP address for host %s\n", argv[1]);
1164 if (argv[3]) secret = argv[3];
1168 * Maybe read them, from stdin, if there's no
1169 * filename, or if the filename is '-'.
1171 if (filename && (strcmp(filename, "-") != 0)) {
1172 fp = fopen(filename, "r");
1174 fprintf(stderr, "radclient: Error opening %s: %s\n",
1175 filename, strerror(errno));
1185 if ((req->sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
1186 perror("radclient: socket: ");
1191 if(req->vps) pairfree(&req->vps);
1193 if ((req->vps = readvp2(fp, &filedone, "radeapclient:"))
1203 printf("\n\t Total approved auths: %d\n", totalapp);
1204 printf("\t Total denied auths: %d\n", totaldeny);
1210 * given a radius request with some attributes in the EAP range, build
1211 * them all into a single EAP-Message body.
1213 * Note that this function will build multiple EAP-Message bodies
1214 * if there are multiple eligible EAP-types. This is incorrect, as the
1215 * recipient will in fact concatenate them.
1217 * XXX - we could break the loop once we process one type. Maybe this
1218 * just deserves an assert?
1221 static void map_eap_types(RADIUS_PACKET *req)
1223 VALUE_PAIR *vp, *vpnext;
1228 vp = pairfind(req->vps, ATTRIBUTE_EAP_ID, 0);
1230 id = ((int)getpid() & 0xff);
1232 id = vp->vp_integer;
1235 vp = pairfind(req->vps, ATTRIBUTE_EAP_CODE, 0);
1237 eapcode = PW_EAP_REQUEST;
1239 eapcode = vp->vp_integer;
1243 for(vp = req->vps; vp != NULL; vp = vpnext) {
1244 /* save it in case it changes! */
1247 if(vp->attribute >= ATTRIBUTE_EAP_BASE &&
1248 vp->attribute < ATTRIBUTE_EAP_BASE+256) {
1257 eap_type = vp->attribute - ATTRIBUTE_EAP_BASE;
1260 case PW_EAP_IDENTITY:
1261 case PW_EAP_NOTIFICATION:
1272 * no known special handling, it is just encoded as an
1273 * EAP-message with the given type.
1276 /* nuke any existing EAP-Messages */
1277 pairdelete(&req->vps, PW_EAP_MESSAGE, 0);
1279 memset(&ep, 0, sizeof(ep));
1282 ep.type.type = eap_type;
1283 ep.type.length = vp->length;
1284 ep.type.data = malloc(vp->length);
1285 memcpy(ep.type.data,vp->vp_octets, vp->length);
1286 eap_basic_compose(req, &ep);
1291 * given a radius request with an EAP-Message body, decode it specific
1294 static void unmap_eap_types(RADIUS_PACKET *rep)
1301 /* find eap message */
1302 e = eap_vp2packet(rep->vps);
1304 /* nothing to do! */
1305 if(e == NULL) return;
1307 /* create EAP-ID and EAP-CODE attributes to start */
1308 eap1 = paircreate(ATTRIBUTE_EAP_ID, 0, PW_TYPE_INTEGER);
1309 eap1->vp_integer = e->id;
1310 pairadd(&(rep->vps), eap1);
1312 eap1 = paircreate(ATTRIBUTE_EAP_CODE, 0, PW_TYPE_INTEGER);
1313 eap1->vp_integer = e->code;
1314 pairadd(&(rep->vps), eap1);
1319 case PW_EAP_SUCCESS:
1320 case PW_EAP_FAILURE:
1324 case PW_EAP_REQUEST:
1325 case PW_EAP_RESPONSE:
1326 /* there is a type field, which we use to create
1327 * a new attribute */
1329 /* the length was decode already into the attribute
1330 * length, and was checked already. Network byte
1331 * order, just pull it out using math.
1333 len = e->length[0]*256 + e->length[1];
1335 /* verify the length is big enough to hold type */
1344 type += ATTRIBUTE_EAP_BASE;
1347 if(len > MAX_STRING_LEN) {
1348 len = MAX_STRING_LEN;
1351 eap1 = paircreate(type, 0, PW_TYPE_OCTETS);
1352 memcpy(eap1->vp_strvalue, &e->data[1], len);
1354 pairadd(&(rep->vps), eap1);
1362 static int map_eapsim_types(RADIUS_PACKET *r)
1367 memset(&ep, 0, sizeof(ep));
1368 ret = map_eapsim_basictypes(r, &ep);
1372 eap_basic_compose(r, &ep);
1377 static int unmap_eapsim_types(RADIUS_PACKET *r)
1381 esvp = pairfind(r->vps, ATTRIBUTE_EAP_BASE+PW_EAP_SIM, 0);
1383 radlog(L_ERR, "eap: EAP-Sim attribute not found");
1387 return unmap_eapsim_basictypes(r, esvp->vp_octets, esvp->length);
1394 const char *radius_dir = RADDBDIR;
1396 int radlog(int lvl, const char *msg, ...)
1402 r = vfprintf(stderr, msg, ap);
1404 fputc('\n', stderr);
1409 main(int argc, char *argv[])
1412 RADIUS_PACKET *req,*req2;
1413 VALUE_PAIR *vp, *vpkey, *vpextra;
1414 extern unsigned int sha1_data_problems;
1421 sha1_data_problems = 1;
1424 if (dict_init(radius_dir, RADIUS_DICTIONARY) < 0) {
1425 fr_perror("radclient");
1429 if ((req = rad_alloc(1)) == NULL) {
1430 fr_perror("radclient");
1434 if ((req2 = rad_alloc(1)) == NULL) {
1435 fr_perror("radclient");
1440 if(req->vps) pairfree(&req->vps);
1441 if(req2->vps) pairfree(&req2->vps);
1443 if ((req->vps = readvp2(stdin, &filedone, "eapsimlib:")) == NULL) {
1447 if (fr_debug_flag > 1) {
1448 printf("\nRead:\n");
1449 vp_printlist(stdout, req->vps);
1452 map_eapsim_types(req);
1455 if (fr_debug_flag > 1) {
1456 printf("Mapped to:\n");
1457 vp_printlist(stdout, req->vps);
1460 /* find the EAP-Message, copy it to req2 */
1461 vp = paircopy2(req->vps, PW_EAP_MESSAGE);
1463 if(vp == NULL) continue;
1465 pairadd(&req2->vps, vp);
1467 /* only call unmap for sim types here */
1468 unmap_eap_types(req2);
1469 unmap_eapsim_types(req2);
1471 if (fr_debug_flag > 1) {
1472 printf("Unmapped to:\n");
1473 vp_printlist(stdout, req2->vps);
1476 vp = pairfind(req2->vps,
1477 ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_MAC, 0);
1478 vpkey = pairfind(req->vps, ATTRIBUTE_EAP_SIM_KEY, 0);
1479 vpextra = pairfind(req->vps, ATTRIBUTE_EAP_SIM_EXTRA, 0);
1481 if(vp != NULL && vpkey != NULL && vpextra!=NULL) {
1482 uint8_t calcmac[16];
1484 /* find the EAP-Message, copy it to req2 */
1486 memset(calcmac, 0, sizeof(calcmac));
1487 printf("Confirming MAC...");
1488 if(eapsim_checkmac(req2->vps, vpkey->vp_strvalue,
1489 vpextra->vp_strvalue, vpextra->length,
1491 printf("succeed\n");
1495 printf("calculated MAC (");
1496 for (i = 0; i < 20; i++) {
1503 printf("%02x", calcmac[i]);
1505 printf(" did not match\n");