--- /dev/null
+/*
+ * radeapclient.c EAP specific radius packet debug tool.
+ *
+ * Version: $Id$
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Copyright 2000 The FreeRADIUS server project
+ * Copyright 2000 Miquel van Smoorenburg <miquels@cistron.nl>
+ * Copyright 2000 Alan DeKok <aland@ox.org>
+ */
+static const char rcsid[] = "$Id$";
+
+#include "autoconf.h"
+#include "libradius.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#include <string.h>
+#include <ctype.h>
+#include <netdb.h>
+#include <sys/socket.h>
+
+#if HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+
+#if HAVE_SYS_SELECT_H
+# include <sys/select.h>
+#endif
+
+#if HAVE_GETOPT_H
+# include <getopt.h>
+#endif
+
+#include "conf.h"
+#include "radpaths.h"
+#include "missing.h"
+#include "../include/md5.h"
+
+#include "eap_types.h"
+#include "eap_sim.h"
+
+static int retries = 10;
+static float timeout = 3;
+static const char *secret = NULL;
+static int do_output = 1;
+static int do_summary = 0;
+static int filedone = 0;
+static int totalapp = 0;
+static int totaldeny = 0;
+static char filesecret[256];
+const char *radius_dir = RADDBDIR;
+const char *progname = "radeapclient";
+/* lrad_randctx randctx; */
+
+
+radlog_dest_t radlog_dest = RADLOG_STDERR;
+const char *radlog_dir = NULL;
+int debug_flag = 0;
+struct main_config_t mainconfig;
+char password[256];
+
+struct eapsim_keys eapsim_mk;
+
+static void usage(void)
+{
+ fprintf(stderr, "Usage: radeapclient [options] server[:port] <command> [<secret>]\n");
+
+ fprintf(stderr, " <command> One of auth, acct, status, or disconnect.\n");
+ fprintf(stderr, " -c count Send each packet 'count' times.\n");
+ fprintf(stderr, " -d raddb Set dictionary directory.\n");
+ fprintf(stderr, " -f file Read packets from file, not stdin.\n");
+ fprintf(stderr, " -r retries If timeout, retry sending the packet 'retries' times.\n");
+ fprintf(stderr, " -t timeout Wait 'timeout' seconds before retrying (may be a floating point number).\n");
+ fprintf(stderr, " -i id Set request id to 'id'. Values may be 0..255\n");
+ fprintf(stderr, " -S file read secret from file, not command line.\n");
+ fprintf(stderr, " -q Do not print anything out.\n");
+ fprintf(stderr, " -s Print out summary information of auth results.\n");
+ fprintf(stderr, " -v Show program version information.\n");
+ fprintf(stderr, " -x Debugging mode.\n");
+
+ exit(1);
+}
+
+int radlog(int lvl, const char *msg, ...)
+{
+ va_list ap;
+ int r;
+
+ r = lvl; /* shut up compiler */
+
+ va_start(ap, msg);
+ r = vfprintf(stderr, msg, ap);
+ va_end(ap);
+ fputc('\n', stderr);
+
+ return r;
+}
+
+static int getport(const char *name)
+{
+ struct servent *svp;
+
+ svp = getservbyname (name, "udp");
+ if (!svp) {
+ return 0;
+ }
+
+ return ntohs(svp->s_port);
+}
+
+static int send_packet(RADIUS_PACKET *req, RADIUS_PACKET **rep)
+{
+ int i;
+ struct timeval tv;
+
+ for (i = 0; i < retries; i++) {
+ fd_set rdfdesc;
+
+ rad_send(req, NULL, secret);
+
+ /* And wait for reply, timing out as necessary */
+ FD_ZERO(&rdfdesc);
+ FD_SET(req->sockfd, &rdfdesc);
+
+ tv.tv_sec = (int)timeout;
+ tv.tv_usec = 1000000 * (timeout - (int) timeout);
+
+ /* Something's wrong if we don't get exactly one fd. */
+ if (select(req->sockfd + 1, &rdfdesc, NULL, NULL, &tv) != 1) {
+ continue;
+ }
+
+ *rep = rad_recv(req->sockfd);
+ if (*rep != NULL) {
+ /*
+ * If we get a response from a machine
+ * which we did NOT send a request to,
+ * then complain.
+ */
+ if (((*rep)->src_ipaddr != req->dst_ipaddr) ||
+ ((*rep)->src_port != req->dst_port)) {
+ char src[64], dst[64];
+
+ ip_ntoa(src, (*rep)->src_ipaddr);
+ ip_ntoa(dst, req->dst_ipaddr);
+ fprintf(stderr, "radclient: ERROR: Sent request to host %s:%d, got response from host %s:%d\n!",
+ dst, req->dst_port,
+ src, (*rep)->src_port);
+ exit(1);
+ }
+ break;
+ } else { /* NULL: couldn't receive the packet */
+ librad_perror("radclient:");
+ exit(1);
+ }
+ }
+
+ /* No response or no data read (?) */
+ if (i == retries) {
+ fprintf(stderr, "radclient: no response from server\n");
+ exit(1);
+ }
+
+ if (rad_decode(*rep, req, secret) != 0) {
+ librad_perror("rad_decode");
+ exit(1);
+ }
+
+ /* libradius debug already prints out the value pairs for us */
+ if (!librad_debug && do_output) {
+ printf("Received response ID %d, code %d, length = %d\n",
+ (*rep)->id, (*rep)->code, (*rep)->data_len);
+ vp_printlist(stdout, (*rep)->vps);
+ }
+ if((*rep)->code == PW_AUTHENTICATION_ACK) {
+ totalapp++;
+ } else {
+ totaldeny++;
+ }
+
+ return 0;
+}
+
+static void cleanresp(RADIUS_PACKET *resp)
+{
+ VALUE_PAIR *vpnext, *vp, **last;
+
+
+ /*
+ * maybe should just copy things we care about, or keep
+ * a copy of the original input and start from there again?
+ */
+ pairdelete(&resp->vps, PW_EAP_MESSAGE);
+ pairdelete(&resp->vps, ATTRIBUTE_EAP_BASE+PW_EAP_IDENTITY);
+
+ last = &resp->vps;
+ for(vp = *last; vp != NULL; vp = vpnext)
+ {
+ vpnext = vp->next;
+
+ if((vp->attribute > ATTRIBUTE_EAP_BASE &&
+ vp->attribute <= ATTRIBUTE_EAP_BASE+256) ||
+ (vp->attribute > ATTRIBUTE_EAP_SIM_BASE &&
+ vp->attribute <= ATTRIBUTE_EAP_SIM_BASE+256))
+ {
+ *last = vpnext;
+ pairbasicfree(vp);
+ } else {
+ last = &vp->next;
+ }
+ }
+}
+
+/*
+ * we got an EAP-Request/Sim/Start message in a legal state.
+ *
+ * pick a supported version, put it into the reply, and insert a nonce.
+ */
+static int process_eap_start(RADIUS_PACKET *req,
+ RADIUS_PACKET *rep)
+{
+ VALUE_PAIR *vp, *newvp;
+ VALUE_PAIR *anyidreq_vp, *fullauthidreq_vp, *permanentidreq_vp;
+ u_int16_t *versions, selectedversion;
+ unsigned int i,versioncount;
+
+ /* form new response clear of any EAP stuff */
+ cleanresp(rep);
+
+ if((vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_VERSION_LIST)) == NULL) {
+ fprintf(stderr, "illegal start message has no VERSION_LIST\n");
+ return 0;
+ }
+
+ versions = (u_int16_t *)vp->strvalue;
+
+ /* verify that the attribute length is big enough for a length field */
+ if(vp->length < 4)
+ {
+ fprintf(stderr, "start message has illegal VERSION_LIST. Too short: %d\n", vp->length);
+ return 0;
+ }
+
+ versioncount = ntohs(versions[0]);
+ /* verify that the attribute length is big enough for the given number
+ * of versions present.
+ */
+ if((unsigned)vp->length <= (versioncount * sizeof(u_int16_t) + 2))
+ {
+ fprintf(stderr, "start message is too short. Claimed %d versions does not fit in %d bytes\n", versioncount, vp->length);
+ return 0;
+ }
+
+ /*
+ * record the versionlist for the MK calculation.
+ */
+ eapsim_mk.versionlistlen = (versioncount+1)*2;
+ memcpy(eapsim_mk.versionlist, (unsigned char *)versions,
+ eapsim_mk.versionlistlen);
+
+ /* walk the version list, and pick the one we support, which
+ * at present, is 1, EAP_SIM_VERSION.
+ */
+ selectedversion=0;
+ for(i=0; i < versioncount; i++)
+ {
+ if(ntohs(versions[i+1]) == EAP_SIM_VERSION)
+ {
+ selectedversion=EAP_SIM_VERSION;
+ break;
+ }
+ }
+ if(selectedversion == 0)
+ {
+ fprintf(stderr, "eap-sim start message. No compatible version found. We need %d\n", EAP_SIM_VERSION);
+ for(i=0; i < versioncount; i++)
+ {
+ fprintf(stderr, "\tfound version %d\n",
+ ntohs(versions[i+1]));
+ }
+ }
+
+ /*
+ * now make sure that we have only FULLAUTH_ID_REQ.
+ * I think that it actually might not matter - we can answer in
+ * anyway we like, but it is illegal to have more than one
+ * present.
+ */
+ anyidreq_vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_ANY_ID_REQ);
+ fullauthidreq_vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_FULLAUTH_ID_REQ);
+ permanentidreq_vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_PERMANENT_ID_REQ);
+
+ if(fullauthidreq_vp == NULL ||
+ anyidreq_vp != NULL ||
+ permanentidreq_vp != NULL) {
+ fprintf(stderr, "start message has %sanyidreq, %sfullauthid and %spermanentid. Illegal combination.\n",
+ (anyidreq_vp != NULL ? "a " : "no "),
+ (fullauthidreq_vp != NULL ? "a " : "no "),
+ (permanentidreq_vp != NULL ? "a " : "no "));
+ return 0;
+ }
+
+ /* okay, we have just any_id_req there, so fill in response */
+
+ /* mark the subtype as being EAP-SIM/Response/Start */
+ newvp = paircreate(ATTRIBUTE_EAP_SIM_SUBTYPE, PW_TYPE_INTEGER);
+ newvp->lvalue = eapsim_start;
+ pairreplace(&(rep->vps), newvp);
+
+ /* insert selected version into response. */
+ newvp = paircreate(ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_SELECTED_VERSION,
+ PW_TYPE_OCTETS);
+ versions = (u_int16_t *)newvp->strvalue;
+ versions[0] = htons(selectedversion);
+ newvp->length = 2;
+ pairreplace(&(rep->vps), newvp);
+
+ /* record the selected version */
+ memcpy(eapsim_mk.versionselect, (unsigned char *)versions, 2);
+
+ vp = newvp = NULL;
+
+ {
+ u_int32_t nonce[4];
+ /*
+ * insert a nonce_mt that we make up.
+ */
+ newvp = paircreate(ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_NONCE_MT,
+ PW_TYPE_OCTETS);
+ newvp->strvalue[0]=0;
+ newvp->strvalue[1]=0;
+ newvp->length = 18; /* 16 bytes of nonce + padding */
+
+ nonce[0]=lrad_rand();
+ nonce[1]=lrad_rand();
+ nonce[2]=lrad_rand();
+ nonce[3]=lrad_rand();
+ memcpy(&newvp->strvalue[2], nonce, 16);
+ pairreplace(&(rep->vps), newvp);
+
+ /* also keep a copy of the nonce! */
+ memcpy(eapsim_mk.nonce_mt, nonce, 16);
+ }
+
+ {
+ u_int16_t *pidlen, idlen;
+
+ /*
+ * insert the identity here.
+ */
+ vp = pairfind(rep->vps, PW_USER_NAME);
+ if(vp == NULL)
+ {
+ fprintf(stderr, "eap-sim: We need to have a User-Name attribute!\n");
+ return 0;
+ }
+ newvp = paircreate(ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_IDENTITY,
+ PW_TYPE_OCTETS);
+ idlen = strlen(vp->strvalue);
+ pidlen = (u_int16_t *)newvp->strvalue;
+ *pidlen = htons(idlen);
+ newvp->length = idlen + 2;
+
+ memcpy(&newvp->strvalue[2], vp->strvalue, idlen);
+ pairreplace(&(rep->vps), newvp);
+
+ /* record it */
+ memcpy(eapsim_mk.identity, vp->strvalue, idlen);
+ eapsim_mk.identitylen = idlen;
+ }
+
+ return 1;
+}
+
+/*
+ * we got an EAP-Request/Sim/Challenge message in a legal state.
+ *
+ * use the RAND challenge to produce the SRES result, and then
+ * use that to generate a new MAC.
+ *
+ * for the moment, we ignore the RANDs, then just plug in the SRES
+ * values.
+ *
+ */
+static int process_eap_challenge(RADIUS_PACKET *req,
+ RADIUS_PACKET *rep)
+{
+ VALUE_PAIR *newvp;
+ VALUE_PAIR *mac, *randvp;
+ VALUE_PAIR *sres1,*sres2,*sres3;
+ VALUE_PAIR *Kc1, *Kc2, *Kc3;
+ u_int8_t calcmac[20];
+
+ /* look for the AT_MAC and the challenge data */
+ mac = pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_MAC);
+ randvp= pairfind(req->vps, ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_RAND);
+ if(mac == NULL || rand == NULL) {
+ fprintf(stderr, "radeapclient: challenge message needs to contain RAND and MAC\n");
+ return 0;
+ }
+
+ /*
+ * XXX compare RAND with randX, to verify this is the right response
+ * to this challenge.
+ */
+
+ /*
+ * now dig up the sres values from the response packet,
+ * which were put there when we read things in.
+ *
+ * Really, they should be calculated from the RAND!
+ *
+ */
+ sres1 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_SRES1);
+ sres2 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_SRES2);
+ sres3 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_SRES3);
+
+ if(sres1 == NULL ||
+ sres2 == NULL ||
+ sres3 == NULL) {
+ fprintf(stderr, "radeapclient: needs to have sres1, 2 and 3 set.\n");
+ return 0;
+ }
+ memcpy(eapsim_mk.sres[0], sres1->strvalue, sizeof(eapsim_mk.sres[0]));
+ memcpy(eapsim_mk.sres[1], sres2->strvalue, sizeof(eapsim_mk.sres[1]));
+ memcpy(eapsim_mk.sres[2], sres3->strvalue, sizeof(eapsim_mk.sres[2]));
+
+ Kc1 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_KC1);
+ Kc2 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_KC2);
+ Kc3 = pairfind(rep->vps, ATTRIBUTE_EAP_SIM_KC3);
+
+ if(Kc1 == NULL ||
+ Kc2 == NULL ||
+ Kc3 == NULL) {
+ fprintf(stderr, "radeapclient: needs to have Kc1, 2 and 3 set.\n");
+ return 0;
+ }
+ memcpy(eapsim_mk.Kc[0], Kc1->strvalue, sizeof(eapsim_mk.Kc[0]));
+ memcpy(eapsim_mk.Kc[1], Kc2->strvalue, sizeof(eapsim_mk.Kc[1]));
+ memcpy(eapsim_mk.Kc[2], Kc3->strvalue, sizeof(eapsim_mk.Kc[2]));
+
+ /* all set, calculate keys */
+ eapsim_calculate_keys(&eapsim_mk);
+
+ if(debug_flag) {
+ eapsim_dump_mk(&eapsim_mk);
+ }
+
+ /* verify the MAC, now that we have all the keys. */
+ if(eapsim_checkmac(req->vps, eapsim_mk.K_aut,
+ eapsim_mk.nonce_mt, sizeof(eapsim_mk.nonce_mt),
+ calcmac)) {
+ printf("MAC check succeed\n");
+ } else {
+ int i, j;
+ j=0;
+ printf("calculated MAC (");
+ for (i = 0; i < 20; i++) {
+ if(j==4) {
+ printf("_");
+ j=0;
+ }
+ j++;
+
+ printf("%02x", calcmac[i]);
+ }
+ printf(" did not match\n");
+ return 0;
+ }
+
+ /* form new response clear of any EAP stuff */
+ cleanresp(rep);
+
+ /* mark the subtype as being EAP-SIM/Response/Start */
+ newvp = paircreate(ATTRIBUTE_EAP_SIM_SUBTYPE, PW_TYPE_INTEGER);
+ newvp->lvalue = eapsim_challenge;
+ pairreplace(&(rep->vps), newvp);
+
+ newvp = paircreate(ATTRIBUTE_EAP_SIM_BASE+PW_EAP_SIM_MAC,
+ PW_TYPE_OCTETS);
+ memcpy(newvp->strvalue+EAPSIM_SRES_SIZE*0, sres1->strvalue, EAPSIM_SRES_SIZE);
+ memcpy(newvp->strvalue+EAPSIM_SRES_SIZE*1, sres2->strvalue, EAPSIM_SRES_SIZE);
+ memcpy(newvp->strvalue+EAPSIM_SRES_SIZE*2, sres3->strvalue, EAPSIM_SRES_SIZE);
+ newvp->length = EAPSIM_SRES_SIZE*3;
+ pairreplace(&(rep->vps), newvp);
+
+ newvp = paircreate(ATTRIBUTE_EAP_SIM_KEY, PW_TYPE_OCTETS);
+ memcpy(newvp->strvalue, eapsim_mk.K_aut, EAPSIM_AUTH_SIZE);
+ newvp->length = EAPSIM_AUTH_SIZE;
+ pairreplace(&(rep->vps), newvp);
+
+ return 1;
+}
+
+/*
+ * this code runs the EAP-SIM client state machine.
+ * the *request* is from the server.
+ * the *reponse* is to the server.
+ *
+ */
+static int respond_eap_sim(RADIUS_PACKET *req,
+ RADIUS_PACKET *resp)
+{
+ enum eapsim_clientstates state, newstate;
+ enum eapsim_subtype subtype;
+ VALUE_PAIR *vp, *statevp, *radstate, *eapid;
+ char statenamebuf[32], subtypenamebuf[32];
+
+ if ((radstate = paircopy2(req->vps, PW_STATE)) == NULL)
+ {
+ return 0;
+ }
+
+ if ((eapid = paircopy2(req->vps, ATTRIBUTE_EAP_ID)) == NULL)
+ {
+ return 0;
+ }
+
+ /* first, dig up the state from the request packet, setting
+ * outselves to be in EAP-SIM-Start state if there is none.
+ */
+
+ if((statevp = pairfind(resp->vps, ATTRIBUTE_EAP_SIM_STATE)) == NULL)
+ {
+ /* must be initial request */
+ statevp = paircreate(ATTRIBUTE_EAP_SIM_STATE, PW_TYPE_INTEGER);
+ statevp->lvalue = eapsim_client_init;
+ pairreplace(&(resp->vps), statevp);
+ }
+ state = statevp->lvalue;
+
+ /*
+ * map the attributes, and authenticate them.
+ */
+ unmap_eapsim_types(req);
+
+ printf("<+++ EAP-sim decoded packet:\n");
+ vp_printlist(stdout, req->vps);
+
+ if((vp = pairfind(req->vps, ATTRIBUTE_EAP_SIM_SUBTYPE)) == NULL)
+ {
+ return 0;
+ }
+ subtype = vp->lvalue;
+
+ /*
+ * look for the appropriate state, and process incoming message
+ */
+ switch(state) {
+ case eapsim_client_init:
+ switch(subtype) {
+ case eapsim_start:
+ newstate = process_eap_start(req, resp);
+ break;
+
+ case eapsim_challenge:
+ case eapsim_notification:
+ case eapsim_reauth:
+ default:
+ fprintf(stderr, "radeapclient: sim in state %s message %s is illegal. Reply dropped.\n",
+ sim_state2name(state, statenamebuf, sizeof(statenamebuf)),
+ sim_subtype2name(subtype, subtypenamebuf, sizeof(subtypenamebuf)));
+ /* invalid state, drop message */
+ return 0;
+ }
+ break;
+
+ case eapsim_client_start:
+ switch(subtype) {
+ case eapsim_start:
+ /* NOT SURE ABOUT THIS ONE, retransmit, I guess */
+ newstate = process_eap_start(req, resp);
+ break;
+
+ case eapsim_challenge:
+ newstate = process_eap_challenge(req, resp);
+ break;
+
+ default:
+ fprintf(stderr, "radeapclient: sim in state %s message %s is illegal. Reply dropped.\n",
+ sim_state2name(state, statenamebuf, sizeof(statenamebuf)),
+ sim_subtype2name(subtype, subtypenamebuf, sizeof(subtypenamebuf)));
+ /* invalid state, drop message */
+ return 0;
+ }
+ break;
+
+
+ default:
+ fprintf(stderr, "radeapclient: sim in illegal state %s\n",
+ sim_state2name(state, statenamebuf, sizeof(statenamebuf)));
+ return 0;
+ }
+
+ /* copy the eap state object in */
+ pairreplace(&(resp->vps), eapid);
+
+ /* update stete info, and send new packet */
+ map_eapsim_types(resp);
+
+ /* copy the radius state object in */
+ pairreplace(&(resp->vps), radstate);
+
+ statevp->lvalue = newstate;
+ return 1;
+}
+
+static int respond_eap_md5(RADIUS_PACKET *req,
+ RADIUS_PACKET *rep)
+{
+ VALUE_PAIR *vp, *id, *state;
+ int valuesize, namesize;
+ unsigned char identifier;
+ unsigned char *value;
+ unsigned char *name;
+ MD5_CTX context;
+ char response[16];
+
+ cleanresp(rep);
+
+ if ((state = paircopy2(req->vps, PW_STATE)) == NULL)
+ {
+ fprintf(stderr, "radeapclient: no state attribute found\n");
+ return 0;
+ }
+
+ if ((id = paircopy2(req->vps, ATTRIBUTE_EAP_ID)) == NULL)
+ {
+ fprintf(stderr, "radeapclient: no EAP-ID attribute found\n");
+ return 0;
+ }
+ identifier = id->lvalue;
+
+ if ((vp = pairfind(req->vps, ATTRIBUTE_EAP_BASE+PW_EAP_MD5)) == NULL)
+ {
+ fprintf(stderr, "radeapclient: no EAP-MD5 attribute found\n");
+ return 0;
+ }
+
+ /* got the details of the MD5 challenge */
+ valuesize = vp->strvalue[0];
+ value = &vp->strvalue[1];
+ name = &vp->strvalue[valuesize+1];
+ namesize = vp->length - (valuesize + 1);
+
+ /* sanitize items */
+ if(valuesize > vp->length)
+ {
+ fprintf(stderr, "radeapclient: md5 valuesize if too big (%d > %d)\n",
+ valuesize, vp->length);
+ return 0;
+ }
+
+ /* now do the CHAP operation ourself, rather than build the
+ * buffer. We could also call rad_chap_encode, but it wants
+ * a CHAP-Challenge, which we don't want to bother with.
+ */
+ librad_MD5Init(&context);
+ librad_MD5Update(&context, &identifier, 1);
+ librad_MD5Update(&context, password, strlen(password));
+ librad_MD5Update(&context, value, valuesize);
+ librad_MD5Final(response, &context);
+
+ vp = paircreate(ATTRIBUTE_EAP_BASE+PW_EAP_MD5, PW_TYPE_OCTETS);
+ vp->strvalue[0]=16;
+ memcpy(&vp->strvalue[1], response, 16);
+ vp->length = 17;
+
+ pairreplace(&(rep->vps), vp);
+
+ pairreplace(&(rep->vps), id);
+
+ /* copy the state object in */
+ pairreplace(&(rep->vps), state);
+
+ return 1;
+}
+
+
+
+static int sendrecv_eap(RADIUS_PACKET *rep)
+{
+ RADIUS_PACKET *req = NULL;
+ VALUE_PAIR *vp, *vpnext;
+ int tried_eap_md5 = 0;
+
+ /*
+ * Keep a copy of the the User-Password attribute.
+ */
+ if ((vp = pairfind(rep->vps, ATTRIBUTE_EAP_MD5_PASSWORD)) != NULL) {
+ strNcpy(password, (char *)vp->strvalue, sizeof(vp->strvalue));
+
+ } else if ((vp = pairfind(rep->vps, PW_PASSWORD)) != NULL) {
+ strNcpy(password, (char *)vp->strvalue, sizeof(vp->strvalue));
+ /*
+ * Otherwise keep a copy of the CHAP-Password attribute.
+ */
+ } else if ((vp = pairfind(rep->vps, PW_CHAP_PASSWORD)) != NULL) {
+ strNcpy(password, (char *)vp->strvalue, sizeof(vp->strvalue));
+ } else {
+ *password = '\0';
+ }
+
+ again:
+ rep->id++;
+
+ printf("\n+++> About to send encoded packet:\n");
+ vp_printlist(stdout, rep->vps);
+
+ /*
+ * if there are EAP types, encode them into an EAP-Message
+ *
+ */
+ map_eap_types(rep);
+
+ /*
+ * Fix up Digest-Attributes issues
+ */
+ for (vp = rep->vps; vp != NULL; vp = vp->next) {
+ switch (vp->attribute) {
+ default:
+ break;
+
+ case PW_DIGEST_REALM:
+ case PW_DIGEST_NONCE:
+ case PW_DIGEST_METHOD:
+ case PW_DIGEST_URI:
+ case PW_DIGEST_QOP:
+ case PW_DIGEST_ALGORITHM:
+ case PW_DIGEST_BODY_DIGEST:
+ case PW_DIGEST_CNONCE:
+ case PW_DIGEST_NONCE_COUNT:
+ case PW_DIGEST_USER_NAME:
+ /* overlapping! */
+ memmove(&vp->strvalue[2], &vp->strvalue[0], vp->length);
+ vp->strvalue[0] = vp->attribute - PW_DIGEST_REALM + 1;
+ vp->length += 2;
+ vp->strvalue[1] = vp->length;
+ vp->attribute = PW_DIGEST_ATTRIBUTES;
+ break;
+ }
+ }
+
+ /*
+ * If we've already sent a packet, free up the old
+ * one, and ensure that the next packet has a unique
+ * ID and authentication vector.
+ */
+ if (rep->data) {
+ free(rep->data);
+ rep->data = NULL;
+ }
+
+ librad_md5_calc(rep->vector, rep->vector,
+ sizeof(rep->vector));
+
+ if (*password != '\0') {
+ if ((vp = pairfind(rep->vps, PW_PASSWORD)) != NULL) {
+ strNcpy((char *)vp->strvalue, password, strlen(password) + 1);
+ vp->length = strlen(password);
+
+ } else if ((vp = pairfind(rep->vps, PW_CHAP_PASSWORD)) != NULL) {
+ strNcpy((char *)vp->strvalue, password, strlen(password) + 1);
+ vp->length = strlen(password);
+
+ rad_chap_encode(rep, (char *) vp->strvalue, rep->id, vp);
+ vp->length = 17;
+ }
+ } /* there WAS a password */
+
+ /* send the response, wait for the next request */
+ send_packet(rep, &req);
+
+ /* okay got back the packet, go and decode the EAP-Message. */
+ unmap_eap_types(req);
+
+ printf("<+++ EAP decoded packet:\n");
+ vp_printlist(stdout, req->vps);
+
+ /* now look for the code type. */
+ for (vp = req->vps; vp != NULL; vp = vpnext) {
+ vpnext = vp->next;
+
+ switch (vp->attribute) {
+ default:
+ break;
+
+ case ATTRIBUTE_EAP_BASE+PW_EAP_MD5:
+ if(respond_eap_md5(req, rep) && tried_eap_md5 < 3)
+ {
+ tried_eap_md5++;
+ goto again;
+ }
+ break;
+
+ case ATTRIBUTE_EAP_BASE+PW_EAP_SIM:
+ if(respond_eap_sim(req, rep))
+ {
+ goto again;
+ }
+ break;
+ }
+ }
+
+ return 1;
+}
+
+
+int main(int argc, char **argv)
+{
+ RADIUS_PACKET *req;
+ char *p;
+ int c;
+ int port = 0;
+ char *filename = NULL;
+ FILE *fp;
+ int count = 1;
+ int id;
+
+ id = ((int)getpid() & 0xff);
+ librad_debug = 0;
+
+ radlog_dest = RADLOG_STDERR;
+
+ while ((c = getopt(argc, argv, "c:d:f:hi:qst:r:S:xv")) != EOF)
+ {
+ switch(c) {
+ case 'c':
+ if (!isdigit((int) *optarg))
+ usage();
+ count = atoi(optarg);
+ break;
+ case 'd':
+ radius_dir = optarg;
+ break;
+ case 'f':
+ filename = optarg;
+ break;
+ case 'q':
+ do_output = 0;
+ break;
+ case 'x':
+ debug_flag++;
+ librad_debug++;
+ break;
+
+ case 'r':
+ if (!isdigit((int) *optarg))
+ usage();
+ retries = atoi(optarg);
+ break;
+ case 'i':
+ if (!isdigit((int) *optarg))
+ usage();
+ id = atoi(optarg);
+ if ((id < 0) || (id > 255)) {
+ usage();
+ }
+ break;
+ case 's':
+ do_summary = 1;
+ break;
+ case 't':
+ if (!isdigit((int) *optarg))
+ usage();
+ timeout = atof(optarg);
+ break;
+ case 'v':
+ printf("radclient: $Id$ built on " __DATE__ " at " __TIME__ "\n");
+ exit(0);
+ break;
+ case 'S':
+ fp = fopen(optarg, "r");
+ if (!fp) {
+ fprintf(stderr, "radclient: Error opening %s: %s\n",
+ optarg, strerror(errno));
+ exit(1);
+ }
+ if (fgets(filesecret, sizeof(filesecret), fp) == NULL) {
+ fprintf(stderr, "radclient: Error reading %s: %s\n",
+ optarg, strerror(errno));
+ exit(1);
+ }
+ fclose(fp);
+
+ /* truncate newline */
+ p = filesecret + strlen(filesecret) - 1;
+ while ((p >= filesecret) &&
+ (*p < ' ')) {
+ *p = '\0';
+ --p;
+ }
+
+ if (strlen(filesecret) < 2) {
+ fprintf(stderr, "radclient: Secret in %s is too short\n", optarg);
+ exit(1);
+ }
+ secret = filesecret;
+ break;
+ case 'h':
+ default:
+ usage();
+ break;
+ }
+ }
+ argc -= (optind - 1);
+ argv += (optind - 1);
+
+ if ((argc < 3) ||
+ ((secret == NULL) && (argc < 4))) {
+ usage();
+ }
+
+ if (dict_init(radius_dir, RADIUS_DICTIONARY) < 0) {
+ librad_perror("radclient");
+ return 1;
+ }
+
+ if ((req = rad_alloc(1)) == NULL) {
+ librad_perror("radclient");
+ exit(1);
+ }
+
+#if 0
+ {
+ FILE *randinit;
+
+ if((randinit = fopen("/dev/urandom", "r")) == NULL)
+ {
+ perror("/dev/urandom");
+ } else {
+ fread(randctx.randrsl, 256, 1, randinit);
+ fclose(randinit);
+ }
+ }
+ lrad_randinit(&randctx, 1);
+#endif
+
+ req->id = id;
+
+ /*
+ * Strip port from hostname if needed.
+ */
+ if ((p = strchr(argv[1], ':')) != NULL) {
+ *p++ = 0;
+ port = atoi(p);
+ }
+
+ /*
+ * See what kind of request we want to send.
+ */
+ if (strcmp(argv[2], "auth") == 0) {
+ if (port == 0) port = getport("radius");
+ if (port == 0) port = PW_AUTH_UDP_PORT;
+ req->code = PW_AUTHENTICATION_REQUEST;
+
+ } else if (strcmp(argv[2], "acct") == 0) {
+ if (port == 0) port = getport("radacct");
+ if (port == 0) port = PW_ACCT_UDP_PORT;
+ req->code = PW_ACCOUNTING_REQUEST;
+ do_summary = 0;
+
+ } else if (strcmp(argv[2], "status") == 0) {
+ if (port == 0) port = getport("radius");
+ if (port == 0) port = PW_AUTH_UDP_PORT;
+ req->code = PW_STATUS_SERVER;
+
+ } else if (strcmp(argv[2], "disconnect") == 0) {
+ if (port == 0) port = PW_POD_UDP_PORT;
+ req->code = PW_DISCONNECT_REQUEST;
+
+ } else if (isdigit((int) argv[2][0])) {
+ if (port == 0) port = getport("radius");
+ if (port == 0) port = PW_AUTH_UDP_PORT;
+ req->code = atoi(argv[2]);
+ } else {
+ usage();
+ }
+
+ /*
+ * Ensure that the configuration is initialized.
+ */
+ memset(&mainconfig, 0, sizeof(mainconfig));
+
+ /*
+ * Resolve hostname.
+ */
+ req->dst_port = port;
+ req->dst_ipaddr = ip_getaddr(argv[1]);
+ if (req->dst_ipaddr == INADDR_NONE) {
+ fprintf(stderr, "radclient: Failed to find IP address for host %s\n", argv[1]);
+ exit(1);
+ }
+
+ /*
+ * Add the secret.
+ */
+ if (argv[3]) secret = argv[3];
+
+ /*
+ * Read valuepairs.
+ * Maybe read them, from stdin, if there's no
+ * filename, or if the filename is '-'.
+ */
+ if (filename && (strcmp(filename, "-") != 0)) {
+ fp = fopen(filename, "r");
+ if (!fp) {
+ fprintf(stderr, "radclient: Error opening %s: %s\n",
+ filename, strerror(errno));
+ exit(1);
+ }
+ } else {
+ fp = stdin;
+ }
+
+ /*
+ * Send request.
+ */
+ if ((req->sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+ perror("radclient: socket: ");
+ exit(1);
+ }
+
+ while(!filedone) {
+ if(req->vps) pairfree(&req->vps);
+
+ if ((req->vps = readvp2(fp, &filedone, "radeapclient:"))
+ == NULL) {
+ break;
+ }
+
+ sendrecv_eap(req);
+ }
+
+ if(do_summary) {
+ printf("\n\t Total approved auths: %d\n", totalapp);
+ printf("\t Total denied auths: %d\n", totaldeny);
+ }
+ return 0;
+}
projects / freeradius.git / commitdiff