1 /***********************************************************************
5 * RADIUS plugin for pppd. Performs PAP, CHAP, MS-CHAP, MS-CHAPv2
6 * authentication using RADIUS.
8 * Copyright (C) 2002 Roaring Penguin Software Inc.
10 * Based on a patch for ipppd, which is:
11 * Copyright (C) 1996, Matjaz Godec <gody@elgo.si>
12 * Copyright (C) 1996, Lars Fenneberg <in5y050@public.uni-hamburg.de>
13 * Copyright (C) 1997, Miguel A.L. Paraz <map@iphil.net>
15 * Uses radiusclient library, which is:
16 * Copyright (C) 1995,1996,1997,1998 Lars Fenneberg <lf@elemental.net>
17 * Copyright (C) 2002 Roaring Penguin Software Inc.
19 * MPPE support is by Ralf Hofmann, <ralf.hofmann@elvido.net>, with
20 * modification from Frank Cusack, <frank@google.com>.
22 * This plugin may be distributed according to the terms of the GNU
23 * General Public License, version 2 or (at your option) any later version.
25 ***********************************************************************/
26 static char const RCSID[] =
27 "$Id: radius.c,v 1.28 2004/11/14 10:27:57 paulus Exp $";
37 #include "radiusclient.h"
41 #include <sys/types.h>
44 #include <netinet/in.h>
49 #define MD5_HASH_SIZE 16
51 static char *config_file = NULL;
52 static int add_avp(char **);
53 static struct avpopt {
57 static bool portnummap = 0;
59 static option_t Options[] = {
60 { "radius-config-file", o_string, &config_file },
61 { "avpair", o_special, add_avp },
62 { "map-to-ttyname", o_bool, &portnummap,
63 "Set Radius NAS-Port attribute value via libradiusclient library", OPT_PRIO | 1 },
64 { "map-to-ifname", o_bool, &portnummap,
65 "Set Radius NAS-Port attribute to number as in interface name (Default)", OPT_PRIOSUB | 0 },
69 static int radius_secret_check(void);
70 static int radius_pap_auth(char *user,
73 struct wordlist **paddrs,
74 struct wordlist **popts);
75 static int radius_chap_verify(char *user, char *ourname, int id,
76 struct chap_digest_type *digest,
77 unsigned char *challenge,
78 unsigned char *response,
79 char *message, int message_space);
81 static void radius_ip_up(void *opaque, int arg);
82 static void radius_ip_down(void *opaque, int arg);
83 static void make_username_realm(char *user);
84 static int radius_setparams(VALUE_PAIR *vp, char *msg, REQUEST_INFO *req_info,
85 struct chap_digest_type *digest,
86 unsigned char *challenge,
87 char *message, int message_space);
88 static void radius_choose_ip(u_int32_t *addrp);
89 static int radius_init(char *msg);
90 static int get_client_port(char *ifname);
91 static int radius_allowed_address(u_int32_t addr);
92 static void radius_acct_interim(void *);
94 static int radius_setmppekeys(VALUE_PAIR *vp, REQUEST_INFO *req_info,
96 static int radius_setmppekeys2(VALUE_PAIR *vp, REQUEST_INFO *req_info);
100 #define MAXSESSIONID 32
104 #define MAXCLASSLEN 500
107 struct radius_state {
108 int accounting_started;
115 char user[MAXNAMELEN];
116 char config_file[MAXPATHLEN];
117 char session_id[MAXSESSIONID + 1];
119 int acct_interim_interval;
120 SERVER *authserver; /* Authentication server to use */
121 SERVER *acctserver; /* Accounting server to use */
123 char class[MAXCLASSLEN];
124 VALUE_PAIR *avp; /* Additional (user supplied) vp's to send to server */
127 void (*radius_attributes_hook)(VALUE_PAIR *) = NULL;
129 /* The pre_auth_hook MAY set authserver and acctserver if it wants.
130 In that case, they override the values in the radiusclient.conf file */
131 void (*radius_pre_auth_hook)(char const *user,
133 SERVER **acctserver) = NULL;
135 static struct radius_state rstate;
137 char pppd_version[] = VERSION;
139 /**********************************************************************
140 * %FUNCTION: plugin_init
146 * Initializes RADIUS plugin.
147 ***********************************************************************/
151 pap_check_hook = radius_secret_check;
152 pap_auth_hook = radius_pap_auth;
154 chap_check_hook = radius_secret_check;
155 chap_verify_hook = radius_chap_verify;
157 ip_choose_hook = radius_choose_ip;
158 allowed_address_hook = radius_allowed_address;
160 add_notifier(&ip_up_notifier, radius_ip_up, NULL);
161 add_notifier(&ip_down_notifier, radius_ip_down, NULL);
163 memset(&rstate, 0, sizeof(rstate));
165 strlcpy(rstate.config_file, "/etc/radiusclient/radiusclient.conf",
166 sizeof(rstate.config_file));
168 add_options(Options);
170 info("RADIUS plugin initialized.");
173 /**********************************************************************
176 * argv -- the <attribute=value> pair to add
180 * Adds an av pair to be passed on to the RADIUS server on each request.
181 ***********************************************************************/
185 struct avpopt *p = malloc(sizeof(struct avpopt));
187 /* Append to a list of vp's for later parsing */
188 p->vpstr = strdup(*argv);
195 /**********************************************************************
196 * %FUNCTION: radius_secret_check
200 * 1 -- we are ALWAYS willing to supply a secret. :-)
202 * Tells pppd that we will try to authenticate the peer, and not to
203 * worry about looking in /etc/ppp/*-secrets
204 ***********************************************************************/
206 radius_secret_check(void)
211 /**********************************************************************
212 * %FUNCTION: radius_choose_ip
214 * addrp -- where to store the IP address
218 * If RADIUS server has specified an IP address, it is stored in *addrp.
219 ***********************************************************************/
221 radius_choose_ip(u_int32_t *addrp)
223 if (rstate.choose_ip) {
224 *addrp = rstate.ip_addr;
228 /**********************************************************************
229 * %FUNCTION: radius_pap_auth
231 * user -- user-name of peer
232 * passwd -- password supplied by peer
233 * msgp -- Message which will be sent in PAP response
234 * paddrs -- set to a list of possible peer IP addresses
235 * popts -- set to a list of additional pppd options
237 * 1 if we can authenticate, -1 if we cannot.
239 * Performs PAP authentication using RADIUS
240 ***********************************************************************/
242 radius_pap_auth(char *user,
245 struct wordlist **paddrs,
246 struct wordlist **popts)
248 VALUE_PAIR *send, *received;
251 static char radius_msg[BUF_LEN];
256 if (radius_init(radius_msg) < 0) {
260 /* Put user with potentially realm added in rstate.user */
261 make_username_realm(user);
263 if (radius_pre_auth_hook) {
264 radius_pre_auth_hook(rstate.user,
272 /* Hack... the "port" is the ppp interface number. Should really be
274 rstate.client_port = get_client_port(portnummap ? devnam : ifname);
277 rc_avpair_add(&send, PW_SERVICE_TYPE, &av_type, 0, VENDOR_NONE);
280 rc_avpair_add(&send, PW_FRAMED_PROTOCOL, &av_type, 0, VENDOR_NONE);
282 rc_avpair_add(&send, PW_USER_NAME, rstate.user , 0, VENDOR_NONE);
283 rc_avpair_add(&send, PW_USER_PASSWORD, passwd, 0, VENDOR_NONE);
284 if (*remote_number) {
285 rc_avpair_add(&send, PW_CALLING_STATION_ID, remote_number, 0,
288 rc_avpair_add(&send, PW_CALLING_STATION_ID, ipparam, 0, VENDOR_NONE);
290 /* Add user specified vp's */
292 rc_avpair_insert(&send, NULL, rc_avpair_copy(rstate.avp));
294 if (rstate.authserver) {
295 result = rc_auth_using_server(rstate.authserver,
296 rstate.client_port, send,
297 &received, radius_msg, NULL);
299 result = rc_auth(rstate.client_port, send, &received, radius_msg, NULL);
302 if (result == OK_RC) {
303 if (radius_setparams(received, radius_msg, NULL, NULL, NULL, NULL, 0) < 0) {
308 /* free value pairs */
309 rc_avpair_free(received);
310 rc_avpair_free(send);
312 return (result == OK_RC) ? 1 : 0;
315 /**********************************************************************
316 * %FUNCTION: radius_chap_verify
318 * user -- name of the peer
319 * ourname -- name for this machine
320 * id -- the ID byte in the challenge
321 * digest -- points to the structure representing the digest type
322 * challenge -- the challenge string we sent (length in first byte)
323 * response -- the response (hash) the peer sent back (length in 1st byte)
324 * message -- space for a message to be returned to the peer
325 * message_space -- number of bytes available at *message.
327 * 1 if the response is good, 0 if it is bad
329 * Performs CHAP, MS-CHAP and MS-CHAPv2 authentication using RADIUS.
330 ***********************************************************************/
332 radius_chap_verify(char *user, char *ourname, int id,
333 struct chap_digest_type *digest,
334 unsigned char *challenge, unsigned char *response,
335 char *message, int message_space)
337 VALUE_PAIR *send, *received;
339 static char radius_msg[BUF_LEN];
341 int challenge_len, response_len;
342 u_char cpassword[MAX_RESPONSE_LEN + 1];
344 /* Need the RADIUS secret and Request Authenticator to decode MPPE */
345 REQUEST_INFO request_info, *req_info = &request_info;
347 REQUEST_INFO *req_info = NULL;
350 challenge_len = *challenge++;
351 response_len = *response++;
355 if (radius_init(radius_msg) < 0) {
356 error("%s", radius_msg);
360 /* return error for types we can't handle */
361 if ((digest->code != CHAP_MD5)
363 && (digest->code != CHAP_MICROSOFT)
364 && (digest->code != CHAP_MICROSOFT_V2)
367 error("RADIUS: Challenge type %u unsupported", digest->code);
371 /* Put user with potentially realm added in rstate.user */
372 if (!rstate.done_chap_once) {
373 make_username_realm(user);
374 rstate.client_port = get_client_port (portnummap ? devnam : ifname);
375 if (radius_pre_auth_hook) {
376 radius_pre_auth_hook(rstate.user,
382 send = received = NULL;
385 rc_avpair_add (&send, PW_SERVICE_TYPE, &av_type, 0, VENDOR_NONE);
388 rc_avpair_add (&send, PW_FRAMED_PROTOCOL, &av_type, 0, VENDOR_NONE);
390 rc_avpair_add (&send, PW_USER_NAME, rstate.user , 0, VENDOR_NONE);
393 * add the challenge and response fields
395 switch (digest->code) {
397 /* CHAP-Challenge and CHAP-Password */
398 if (response_len != MD5_HASH_SIZE)
401 memcpy(&cpassword[1], response, MD5_HASH_SIZE);
403 rc_avpair_add(&send, PW_CHAP_CHALLENGE,
404 challenge, challenge_len, VENDOR_NONE);
405 rc_avpair_add(&send, PW_CHAP_PASSWORD,
406 cpassword, MD5_HASH_SIZE + 1, VENDOR_NONE);
412 /* MS-CHAP-Challenge and MS-CHAP-Response */
413 MS_ChapResponse *rmd = (MS_ChapResponse *) response;
414 u_char *p = cpassword;
416 if (response_len != MS_CHAP_RESPONSE_LEN)
419 /* The idiots use a different field order in RADIUS than PPP */
420 memcpy(p, rmd->UseNT, sizeof(rmd->UseNT));
421 p += sizeof(rmd->UseNT);
422 memcpy(p, rmd->LANManResp, sizeof(rmd->LANManResp));
423 p += sizeof(rmd->LANManResp);
424 memcpy(p, rmd->NTResp, sizeof(rmd->NTResp));
426 rc_avpair_add(&send, PW_MS_CHAP_CHALLENGE,
427 challenge, challenge_len, VENDOR_MICROSOFT);
428 rc_avpair_add(&send, PW_MS_CHAP_RESPONSE,
429 cpassword, MS_CHAP_RESPONSE_LEN + 1, VENDOR_MICROSOFT);
433 case CHAP_MICROSOFT_V2:
435 /* MS-CHAP-Challenge and MS-CHAP2-Response */
436 MS_Chap2Response *rmd = (MS_Chap2Response *) response;
437 u_char *p = cpassword;
439 if (response_len != MS_CHAP2_RESPONSE_LEN)
442 /* The idiots use a different field order in RADIUS than PPP */
443 memcpy(p, rmd->Flags, sizeof(rmd->Flags));
444 p += sizeof(rmd->Flags);
445 memcpy(p, rmd->PeerChallenge, sizeof(rmd->PeerChallenge));
446 p += sizeof(rmd->PeerChallenge);
447 memcpy(p, rmd->Reserved, sizeof(rmd->Reserved));
448 p += sizeof(rmd->Reserved);
449 memcpy(p, rmd->NTResp, sizeof(rmd->NTResp));
451 rc_avpair_add(&send, PW_MS_CHAP_CHALLENGE,
452 challenge, challenge_len, VENDOR_MICROSOFT);
453 rc_avpair_add(&send, PW_MS_CHAP2_RESPONSE,
454 cpassword, MS_CHAP2_RESPONSE_LEN + 1, VENDOR_MICROSOFT);
460 if (*remote_number) {
461 rc_avpair_add(&send, PW_CALLING_STATION_ID, remote_number, 0,
464 rc_avpair_add(&send, PW_CALLING_STATION_ID, ipparam, 0, VENDOR_NONE);
466 /* Add user specified vp's */
468 rc_avpair_insert(&send, NULL, rc_avpair_copy(rstate.avp));
471 * make authentication with RADIUS server
474 if (rstate.authserver) {
475 result = rc_auth_using_server(rstate.authserver,
476 rstate.client_port, send,
477 &received, radius_msg, req_info);
479 result = rc_auth(rstate.client_port, send, &received, radius_msg,
483 if (result == OK_RC) {
484 if (!rstate.done_chap_once) {
485 if (radius_setparams(received, radius_msg, req_info, digest,
486 challenge, message, message_space) < 0) {
487 error("%s", radius_msg);
490 rstate.done_chap_once = 1;
495 rc_avpair_free(received);
496 rc_avpair_free (send);
497 return (result == OK_RC);
500 /**********************************************************************
501 * %FUNCTION: make_username_realm
503 * user -- the user given to pppd
507 * Copies user into rstate.user. If it lacks a realm (no "@domain" part),
508 * then the default realm from the radiusclient config file is added.
509 ***********************************************************************/
511 make_username_realm(char *user)
515 if ( user != NULL ) {
516 strlcpy(rstate.user, user, sizeof(rstate.user));
521 default_realm = rc_conf_str("default_realm");
523 if (!strchr(rstate.user, '@') &&
525 (*default_realm != '\0')) {
526 strlcat(rstate.user, "@", sizeof(rstate.user));
527 strlcat(rstate.user, default_realm, sizeof(rstate.user));
531 /**********************************************************************
532 * %FUNCTION: radius_setparams
534 * vp -- received value-pairs
535 * msg -- buffer in which to place error message. Holds up to BUF_LEN chars
537 * >= 0 on success; -1 on failure
539 * Parses attributes sent by RADIUS server and sets them in pppd.
540 ***********************************************************************/
542 radius_setparams(VALUE_PAIR *vp, char *msg, REQUEST_INFO *req_info,
543 struct chap_digest_type *digest, unsigned char *challenge,
544 char *message, int message_space)
547 int ms_chap2_success = 0;
549 int mppe_enc_keys = 0; /* whether or not these were received */
550 int mppe_enc_policy = 0;
551 int mppe_enc_types = 0;
554 /* Send RADIUS attributes to anyone else who might be interested */
555 if (radius_attributes_hook) {
556 (*radius_attributes_hook)(vp);
560 * service type (if not framed then quit),
561 * new IP address (RADIUS can define static IP for some users),
565 if (vp->vendorcode == VENDOR_NONE) {
566 switch (vp->attribute) {
567 case PW_SERVICE_TYPE:
568 /* check for service type */
569 /* if not FRAMED then exit */
570 if (vp->lvalue != PW_FRAMED) {
571 slprintf(msg, BUF_LEN, "RADIUS: wrong service type %ld for %s",
572 vp->lvalue, rstate.user);
577 case PW_FRAMED_PROTOCOL:
578 /* check for framed protocol type */
579 /* if not PPP then also exit */
580 if (vp->lvalue != PW_PPP) {
581 slprintf(msg, BUF_LEN, "RADIUS: wrong framed protocol %ld for %s",
582 vp->lvalue, rstate.user);
587 case PW_SESSION_TIMEOUT:
588 /* Session timeout */
589 maxconnect = vp->lvalue;
592 case PW_SESSION_OCTETS_LIMIT:
593 /* Session traffic limit */
594 maxoctets = vp->lvalue;
596 case PW_OCTETS_DIRECTION:
597 /* Session traffic limit direction check */
598 maxoctets_dir = ( vp->lvalue > 4 ) ? 0 : vp->lvalue ;
601 case PW_ACCT_INTERIM_INTERVAL:
602 /* Send accounting updates every few seconds */
603 rstate.acct_interim_interval = vp->lvalue;
604 /* RFC says it MUST NOT be less than 60 seconds */
605 /* We use "0" to signify not sending updates */
606 if (rstate.acct_interim_interval &&
607 rstate.acct_interim_interval < 60) {
608 rstate.acct_interim_interval = 60;
611 case PW_FRAMED_IP_ADDRESS:
612 /* seting up remote IP addresses */
614 if (remote == 0xffffffff) {
615 /* 0xffffffff means user should be allowed to select one */
616 rstate.any_ip_addr_ok = 1;
617 } else if (remote != 0xfffffffe) {
618 /* 0xfffffffe means NAS should select an ip address */
619 remote = htonl(vp->lvalue);
620 if (bad_ip_adrs (remote)) {
621 slprintf(msg, BUF_LEN, "RADIUS: bad remote IP address %I for %s",
622 remote, rstate.user);
625 rstate.choose_ip = 1;
626 rstate.ip_addr = remote;
630 /* Save Class attribute to pass it in accounting request */
631 if (vp->lvalue <= MAXCLASSLEN) {
632 rstate.class_len=vp->lvalue;
633 memcpy(rstate.class, vp->strvalue, rstate.class_len);
634 } /* else too big for our buffer - ignore it */
640 } else if (vp->vendorcode == VENDOR_MICROSOFT) {
641 switch (vp->attribute) {
642 case PW_MS_CHAP2_SUCCESS:
643 if ((vp->lvalue != 43) || strncmp(vp->strvalue + 1, "S=", 2)) {
644 slprintf(msg,BUF_LEN,"RADIUS: bad MS-CHAP2-Success packet");
648 strlcpy(message, vp->strvalue + 1, message_space);
649 ms_chap2_success = 1;
653 case PW_MS_CHAP_MPPE_KEYS:
654 if (radius_setmppekeys(vp, req_info, challenge) < 0) {
655 slprintf(msg, BUF_LEN,
656 "RADIUS: bad MS-CHAP-MPPE-Keys attribute");
662 case PW_MS_MPPE_SEND_KEY:
663 case PW_MS_MPPE_RECV_KEY:
664 if (radius_setmppekeys2(vp, req_info) < 0) {
665 slprintf(msg, BUF_LEN,
666 "RADIUS: bad MS-MPPE-%s-Key attribute",
667 (vp->attribute == PW_MS_MPPE_SEND_KEY)?
674 case PW_MS_MPPE_ENCRYPTION_POLICY:
675 mppe_enc_policy = vp->lvalue; /* save for later */
678 case PW_MS_MPPE_ENCRYPTION_TYPES:
679 mppe_enc_types = vp->lvalue; /* save for later */
684 case PW_MS_PRIMARY_DNS_SERVER:
685 case PW_MS_SECONDARY_DNS_SERVER:
686 case PW_MS_PRIMARY_NBNS_SERVER:
687 case PW_MS_SECONDARY_NBNS_SERVER:
696 /* Require a valid MS-CHAP2-SUCCESS for MS-CHAPv2 auth */
697 if (digest && (digest->code == CHAP_MICROSOFT_V2) && !ms_chap2_success)
702 * Require both policy and key attributes to indicate a valid key.
703 * Note that if the policy value was '0' we don't set the key!
705 if (mppe_enc_policy && mppe_enc_keys) {
707 /* Set/modify allowed encryption types. */
709 set_mppe_enc_types(mppe_enc_policy, mppe_enc_types);
717 /**********************************************************************
718 * %FUNCTION: radius_setmppekeys
720 * vp -- value pair holding MS-CHAP-MPPE-KEYS attribute
721 * req_info -- radius request information used for encryption
723 * >= 0 on success; -1 on failure
725 * Decrypt the "key" provided by the RADIUS server for MPPE encryption.
727 ***********************************************************************/
729 radius_setmppekeys(VALUE_PAIR *vp, REQUEST_INFO *req_info,
730 unsigned char *challenge)
737 if (vp->lvalue != 32) {
738 error("RADIUS: Incorrect attribute length (%d) for MS-CHAP-MPPE-Keys",
743 memcpy(plain, vp->strvalue, sizeof(plain));
746 MD5_Update(&Context, req_info->secret, strlen(req_info->secret));
747 MD5_Update(&Context, req_info->request_vector, AUTH_VECTOR_LEN);
748 MD5_Final(buf, &Context);
750 for (i = 0; i < 16; i++)
754 MD5_Update(&Context, req_info->secret, strlen(req_info->secret));
755 MD5_Update(&Context, vp->strvalue, 16);
756 MD5_Final(buf, &Context);
758 for(i = 0; i < 16; i++)
759 plain[i + 16] ^= buf[i];
762 * Annoying. The "key" returned is just the NTPasswordHashHash, which
763 * the NAS (us) doesn't need; we only need the start key. So we have
764 * to generate the start key, sigh. NB: We do not support the LM-Key.
766 mppe_set_keys(challenge, &plain[8]);
771 /**********************************************************************
772 * %FUNCTION: radius_setmppekeys2
774 * vp -- value pair holding MS-MPPE-SEND-KEY or MS-MPPE-RECV-KEY attribute
775 * req_info -- radius request information used for encryption
777 * >= 0 on success; -1 on failure
779 * Decrypt the key provided by the RADIUS server for MPPE encryption.
781 ***********************************************************************/
783 radius_setmppekeys2(VALUE_PAIR *vp, REQUEST_INFO *req_info)
787 u_char *salt = vp->strvalue;
788 u_char *crypt = vp->strvalue + 2;
790 u_char buf[MD5_HASH_SIZE];
793 if (vp->attribute == PW_MS_MPPE_RECV_KEY)
796 if (vp->lvalue != 34) {
797 error("RADIUS: Incorrect attribute length (%d) for MS-MPPE-%s-Key",
802 if ((salt[0] & 0x80) == 0) {
803 error("RADIUS: Illegal salt value for MS-MPPE-%s-Key attribute", type);
807 memcpy(plain, crypt, 32);
810 MD5_Update(&Context, req_info->secret, strlen(req_info->secret));
811 MD5_Update(&Context, req_info->request_vector, AUTH_VECTOR_LEN);
812 MD5_Update(&Context, salt, 2);
813 MD5_Final(buf, &Context);
815 for (i = 0; i < 16; i++)
818 if (plain[0] != sizeof(mppe_send_key) /* 16 */) {
819 error("RADIUS: Incorrect key length (%d) for MS-MPPE-%s-Key attribute",
820 (int) plain[0], type);
825 MD5_Update(&Context, req_info->secret, strlen(req_info->secret));
826 MD5_Update(&Context, crypt, 16);
827 MD5_Final(buf, &Context);
829 plain[16] ^= buf[0]; /* only need the first byte */
831 if (vp->attribute == PW_MS_MPPE_SEND_KEY)
832 memcpy(mppe_send_key, plain + 1, 16);
834 memcpy(mppe_recv_key, plain + 1, 16);
840 /**********************************************************************
841 * %FUNCTION: radius_acct_start
847 * Sends a "start" accounting message to the RADIUS server.
848 ***********************************************************************/
850 radius_acct_start(void)
854 VALUE_PAIR *send = NULL;
855 ipcp_options *ho = &ipcp_hisoptions[0];
858 if (!rstate.initialized) {
862 rstate.start_time = time(NULL);
864 strncpy(rstate.session_id, rc_mksid(), sizeof(rstate.session_id));
866 rc_avpair_add(&send, PW_ACCT_SESSION_ID,
867 rstate.session_id, 0, VENDOR_NONE);
868 rc_avpair_add(&send, PW_USER_NAME,
869 rstate.user, 0, VENDOR_NONE);
871 if (rstate.class_len > 0)
872 rc_avpair_add(&send, PW_CLASS,
873 rstate.class, rstate.class_len, VENDOR_NONE);
875 av_type = PW_STATUS_START;
876 rc_avpair_add(&send, PW_ACCT_STATUS_TYPE, &av_type, 0, VENDOR_NONE);
879 rc_avpair_add(&send, PW_SERVICE_TYPE, &av_type, 0, VENDOR_NONE);
882 rc_avpair_add(&send, PW_FRAMED_PROTOCOL, &av_type, 0, VENDOR_NONE);
884 if (*remote_number) {
885 rc_avpair_add(&send, PW_CALLING_STATION_ID,
886 remote_number, 0, VENDOR_NONE);
888 rc_avpair_add(&send, PW_CALLING_STATION_ID, ipparam, 0, VENDOR_NONE);
891 rc_avpair_add(&send, PW_ACCT_AUTHENTIC, &av_type, 0, VENDOR_NONE);
894 av_type = ( using_pty ? PW_VIRTUAL : ( sync_serial ? PW_SYNC : PW_ASYNC ) );
895 rc_avpair_add(&send, PW_NAS_PORT_TYPE, &av_type, 0, VENDOR_NONE);
897 hisaddr = ho->hisaddr;
898 av_type = htonl(hisaddr);
899 rc_avpair_add(&send, PW_FRAMED_IP_ADDRESS , &av_type , 0, VENDOR_NONE);
901 /* Add user specified vp's */
903 rc_avpair_insert(&send, NULL, rc_avpair_copy(rstate.avp));
905 if (rstate.acctserver) {
906 result = rc_acct_using_server(rstate.acctserver,
907 rstate.client_port, send);
909 result = rc_acct(rstate.client_port, send);
912 rc_avpair_free(send);
914 if (result != OK_RC) {
915 /* RADIUS server could be down so make this a warning */
917 "Accounting START failed for %s", rstate.user);
919 rstate.accounting_started = 1;
920 /* Kick off periodic accounting reports */
921 if (rstate.acct_interim_interval) {
922 TIMEOUT(radius_acct_interim, NULL, rstate.acct_interim_interval);
927 /**********************************************************************
928 * %FUNCTION: radius_acct_stop
934 * Sends a "stop" accounting message to the RADIUS server.
935 ***********************************************************************/
937 radius_acct_stop(void)
940 VALUE_PAIR *send = NULL;
941 ipcp_options *ho = &ipcp_hisoptions[0];
945 if (!rstate.initialized) {
949 if (!rstate.accounting_started) {
953 rstate.accounting_started = 0;
954 rc_avpair_add(&send, PW_ACCT_SESSION_ID, rstate.session_id,
957 rc_avpair_add(&send, PW_USER_NAME, rstate.user, 0, VENDOR_NONE);
959 av_type = PW_STATUS_STOP;
960 rc_avpair_add(&send, PW_ACCT_STATUS_TYPE, &av_type, 0, VENDOR_NONE);
963 rc_avpair_add(&send, PW_SERVICE_TYPE, &av_type, 0, VENDOR_NONE);
966 rc_avpair_add(&send, PW_FRAMED_PROTOCOL, &av_type, 0, VENDOR_NONE);
969 rc_avpair_add(&send, PW_ACCT_AUTHENTIC, &av_type, 0, VENDOR_NONE);
972 if (link_stats_valid) {
973 av_type = link_connect_time;
974 rc_avpair_add(&send, PW_ACCT_SESSION_TIME, &av_type, 0, VENDOR_NONE);
976 av_type = link_stats.bytes_out;
977 rc_avpair_add(&send, PW_ACCT_OUTPUT_OCTETS, &av_type, 0, VENDOR_NONE);
979 av_type = link_stats.bytes_in;
980 rc_avpair_add(&send, PW_ACCT_INPUT_OCTETS, &av_type, 0, VENDOR_NONE);
982 av_type = link_stats.pkts_out;
983 rc_avpair_add(&send, PW_ACCT_OUTPUT_PACKETS, &av_type, 0, VENDOR_NONE);
985 av_type = link_stats.pkts_in;
986 rc_avpair_add(&send, PW_ACCT_INPUT_PACKETS, &av_type, 0, VENDOR_NONE);
989 if (*remote_number) {
990 rc_avpair_add(&send, PW_CALLING_STATION_ID,
991 remote_number, 0, VENDOR_NONE);
993 rc_avpair_add(&send, PW_CALLING_STATION_ID, ipparam, 0, VENDOR_NONE);
995 av_type = ( using_pty ? PW_VIRTUAL : ( sync_serial ? PW_SYNC : PW_ASYNC ) );
996 rc_avpair_add(&send, PW_NAS_PORT_TYPE, &av_type, 0, VENDOR_NONE);
998 av_type = PW_NAS_ERROR;
1001 case EXIT_USER_REQUEST:
1002 av_type = PW_USER_REQUEST;
1006 case EXIT_PEER_DEAD:
1007 case EXIT_CONNECT_FAILED:
1008 av_type = PW_LOST_CARRIER;
1011 case EXIT_INIT_FAILED:
1012 case EXIT_OPEN_FAILED:
1013 case EXIT_LOCK_FAILED:
1014 case EXIT_PTYCMD_FAILED:
1015 av_type = PW_PORT_ERROR;
1018 case EXIT_PEER_AUTH_FAILED:
1019 case EXIT_AUTH_TOPEER_FAILED:
1020 case EXIT_NEGOTIATION_FAILED:
1021 case EXIT_CNID_AUTH_FAILED:
1022 av_type = PW_SERVICE_UNAVAILABLE;
1025 case EXIT_IDLE_TIMEOUT:
1026 av_type = PW_ACCT_IDLE_TIMEOUT;
1029 case EXIT_CONNECT_TIME:
1030 av_type = PW_ACCT_SESSION_TIMEOUT;
1034 case EXIT_TRAFFIC_LIMIT:
1035 av_type = PW_NAS_REQUEST;
1040 av_type = PW_NAS_ERROR;
1043 rc_avpair_add(&send, PW_ACCT_TERMINATE_CAUSE, &av_type, 0, VENDOR_NONE);
1045 hisaddr = ho->hisaddr;
1046 av_type = htonl(hisaddr);
1047 rc_avpair_add(&send, PW_FRAMED_IP_ADDRESS , &av_type , 0, VENDOR_NONE);
1049 /* Add user specified vp's */
1051 rc_avpair_insert(&send, NULL, rc_avpair_copy(rstate.avp));
1053 if (rstate.acctserver) {
1054 result = rc_acct_using_server(rstate.acctserver,
1055 rstate.client_port, send);
1057 result = rc_acct(rstate.client_port, send);
1060 if (result != OK_RC) {
1061 /* RADIUS server could be down so make this a warning */
1063 "Accounting STOP failed for %s", rstate.user);
1065 rc_avpair_free(send);
1068 /**********************************************************************
1069 * %FUNCTION: radius_acct_interim
1075 * Sends an interim accounting message to the RADIUS server
1076 ***********************************************************************/
1078 radius_acct_interim(void *ignored)
1081 VALUE_PAIR *send = NULL;
1082 ipcp_options *ho = &ipcp_hisoptions[0];
1086 if (!rstate.initialized) {
1090 if (!rstate.accounting_started) {
1094 rc_avpair_add(&send, PW_ACCT_SESSION_ID, rstate.session_id,
1097 rc_avpair_add(&send, PW_USER_NAME, rstate.user, 0, VENDOR_NONE);
1099 av_type = PW_STATUS_ALIVE;
1100 rc_avpair_add(&send, PW_ACCT_STATUS_TYPE, &av_type, 0, VENDOR_NONE);
1102 av_type = PW_FRAMED;
1103 rc_avpair_add(&send, PW_SERVICE_TYPE, &av_type, 0, VENDOR_NONE);
1106 rc_avpair_add(&send, PW_FRAMED_PROTOCOL, &av_type, 0, VENDOR_NONE);
1108 av_type = PW_RADIUS;
1109 rc_avpair_add(&send, PW_ACCT_AUTHENTIC, &av_type, 0, VENDOR_NONE);
1111 /* Update link stats */
1112 update_link_stats(0);
1114 if (link_stats_valid) {
1115 link_stats_valid = 0; /* Force later code to update */
1117 av_type = link_connect_time;
1118 rc_avpair_add(&send, PW_ACCT_SESSION_TIME, &av_type, 0, VENDOR_NONE);
1120 av_type = link_stats.bytes_out;
1121 rc_avpair_add(&send, PW_ACCT_OUTPUT_OCTETS, &av_type, 0, VENDOR_NONE);
1123 av_type = link_stats.bytes_in;
1124 rc_avpair_add(&send, PW_ACCT_INPUT_OCTETS, &av_type, 0, VENDOR_NONE);
1126 av_type = link_stats.pkts_out;
1127 rc_avpair_add(&send, PW_ACCT_OUTPUT_PACKETS, &av_type, 0, VENDOR_NONE);
1129 av_type = link_stats.pkts_in;
1130 rc_avpair_add(&send, PW_ACCT_INPUT_PACKETS, &av_type, 0, VENDOR_NONE);
1133 if (*remote_number) {
1134 rc_avpair_add(&send, PW_CALLING_STATION_ID,
1135 remote_number, 0, VENDOR_NONE);
1137 rc_avpair_add(&send, PW_CALLING_STATION_ID, ipparam, 0, VENDOR_NONE);
1139 av_type = ( using_pty ? PW_VIRTUAL : ( sync_serial ? PW_SYNC : PW_ASYNC ) );
1140 rc_avpair_add(&send, PW_NAS_PORT_TYPE, &av_type, 0, VENDOR_NONE);
1142 hisaddr = ho->hisaddr;
1143 av_type = htonl(hisaddr);
1144 rc_avpair_add(&send, PW_FRAMED_IP_ADDRESS , &av_type , 0, VENDOR_NONE);
1146 /* Add user specified vp's */
1148 rc_avpair_insert(&send, NULL, rc_avpair_copy(rstate.avp));
1150 if (rstate.acctserver) {
1151 result = rc_acct_using_server(rstate.acctserver,
1152 rstate.client_port, send);
1154 result = rc_acct(rstate.client_port, send);
1157 if (result != OK_RC) {
1158 /* RADIUS server could be down so make this a warning */
1160 "Interim accounting failed for %s", rstate.user);
1162 rc_avpair_free(send);
1164 /* Schedule another one */
1165 TIMEOUT(radius_acct_interim, NULL, rstate.acct_interim_interval);
1168 /**********************************************************************
1169 * %FUNCTION: radius_ip_up
1176 * Called when IPCP is up. We'll do a start-accounting record.
1177 ***********************************************************************/
1179 radius_ip_up(void *opaque, int arg)
1181 radius_acct_start();
1184 /**********************************************************************
1185 * %FUNCTION: radius_ip_down
1192 * Called when IPCP is down. We'll do a stop-accounting record.
1193 ***********************************************************************/
1195 radius_ip_down(void *opaque, int arg)
1200 /**********************************************************************
1201 * %FUNCTION: radius_init
1203 * msg -- buffer of size BUF_LEN for error message
1205 * negative on failure; non-negative on success
1207 * Initializes radiusclient library
1208 ***********************************************************************/
1210 radius_init(char *msg)
1212 if (rstate.initialized) {
1216 if (config_file && *config_file) {
1217 strlcpy(rstate.config_file, config_file, MAXPATHLEN-1);
1220 rstate.initialized = 1;
1222 if (rc_read_config(rstate.config_file) != 0) {
1223 slprintf(msg, BUF_LEN, "RADIUS: Can't read config file %s",
1224 rstate.config_file);
1228 if (rc_read_dictionary(rc_conf_str("dictionary")) != 0) {
1229 slprintf(msg, BUF_LEN, "RADIUS: Can't read dictionary file %s",
1230 rc_conf_str("dictionary"));
1234 if (rc_read_mapfile(rc_conf_str("mapfile")) != 0) {
1235 slprintf(msg, BUF_LEN, "RADIUS: Can't read map file %s",
1236 rc_conf_str("mapfile"));
1240 /* Add av pairs saved during option parsing */
1242 struct avpopt *n = avpopt->next;
1244 rc_avpair_parse(avpopt->vpstr, &rstate.avp);
1245 free(avpopt->vpstr);
1252 /**********************************************************************
1253 * %FUNCTION: get_client_port
1255 * ifname -- PPP interface name (e.g. "ppp7")
1257 * The NAS port number (e.g. 7)
1259 * Extracts the port number from the interface name
1260 ***********************************************************************/
1262 get_client_port(char *ifname)
1265 if (sscanf(ifname, "ppp%d", &port) == 1) {
1268 return rc_map2id(ifname);
1271 /**********************************************************************
1272 * %FUNCTION: radius_allowed_address
1274 * addr -- IP address
1276 * 1 if we're allowed to use that IP address; 0 if not; -1 if we do
1278 ***********************************************************************/
1280 radius_allowed_address(u_int32_t addr)
1282 ipcp_options *wo = &ipcp_wantoptions[0];
1284 if (!rstate.choose_ip) {
1285 /* If RADIUS server said any address is OK, then fine... */
1286 if (rstate.any_ip_addr_ok) {
1290 /* Sigh... if an address was supplied for remote host in pppd
1291 options, it has to match that. */
1292 if (wo->hisaddr != 0 && wo->hisaddr == addr) {
1298 if (addr == rstate.ip_addr) return 1;
1302 /* Useful for other plugins */
1303 char *radius_logged_in_user(void)