*
* radius.c
*
-* RADIUS plugin for pppd. Performs PAP and CHAP authentication using
-* RADIUS.
+* RADIUS plugin for pppd. Performs PAP, CHAP, MS-CHAP, MS-CHAPv2
+* authentication using RADIUS.
*
* Copyright (C) 2002 Roaring Penguin Software Inc.
*
* Copyright (C) 1995,1996,1997,1998 Lars Fenneberg <lf@elemental.net>
* Copyright (C) 2002 Roaring Penguin Software Inc.
*
+* MPPE support is by Ralf Hofmann, <ralf.hofmann@elvido.net>, with
+* modification from Frank Cusack, <frank@google.com>.
+*
* This plugin may be distributed according to the terms of the GNU
* General Public License, version 2 or (at your option) any later version.
*
***********************************************************************/
static char const RCSID[] =
-"$Id: radius.c,v 1.2 2002/02/08 17:28:31 dfs Exp $";
+"$Id: radius.c,v 1.32 2008/05/26 09:18:08 paulus Exp $";
-#include "pppd.h"
-#include "chap.h"
-#include "radiusclient.h"
-#include "fsm.h"
-#include "ipcp.h"
#include <syslog.h>
#include <sys/types.h>
#include <sys/time.h>
+#include <string.h>
+#include <netinet/in.h>
+#include <stdlib.h>
+
+#include <pppd/pppd.h>
+#include <pppd/chap-new.h>
+#ifdef PPP_WITH_CHAPMS
+#include <pppd/chap_ms.h>
+#ifdef PPP_WITH_MPPE
+#include <pppd/mppe.h>
+#include <pppd/md5.h>
+#endif
+#endif
+#include <pppd/fsm.h>
+#include <pppd/ipcp.h>
+
+#include "radiusclient.h"
#define BUF_LEN 1024
+#define MD5_HASH_SIZE 16
+
+#define MSDNS 1
+
static char *config_file = NULL;
+static int add_avp(char **);
+static struct avpopt {
+ char *vpstr;
+ struct avpopt *next;
+} *avpopt = NULL;
+static bool portnummap = 0;
static option_t Options[] = {
{ "radius-config-file", o_string, &config_file },
+ { "avpair", o_special, add_avp },
+ { "map-to-ttyname", o_bool, &portnummap,
+ "Set Radius NAS-Port attribute value via libradiusclient library", OPT_PRIO | 1 },
+ { "map-to-ifname", o_bool, &portnummap,
+ "Set Radius NAS-Port attribute to number as in interface name (Default)", OPT_PRIOSUB | 0 },
{ NULL }
};
char **msgp,
struct wordlist **paddrs,
struct wordlist **popts);
-static int radius_chap_auth(char *user,
- u_char *remmd,
- int remmd_len,
- chap_state *cstate);
+static int radius_chap_verify(char *user, char *ourname, int id,
+ struct chap_digest_type *digest,
+ unsigned char *challenge,
+ unsigned char *response,
+ char *message, int message_space);
static void radius_ip_up(void *opaque, int arg);
static void radius_ip_down(void *opaque, int arg);
static void make_username_realm(char *user);
-static int radius_setparams(VALUE_PAIR *vp, char *msg);
+static int radius_setparams(VALUE_PAIR *vp, char *msg, REQUEST_INFO *req_info,
+ struct chap_digest_type *digest,
+ unsigned char *challenge,
+ char *message, int message_space);
static void radius_choose_ip(u_int32_t *addrp);
static int radius_init(char *msg);
static int get_client_port(char *ifname);
static int radius_allowed_address(u_int32_t addr);
-
-void (*radius_attributes_hook)(VALUE_PAIR *) = NULL;
-void (*radius_pre_auth_hook)(char const *user) = NULL;
+static void radius_acct_interim(void *);
+#ifdef PPP_WITH_MPPE
+static int radius_setmppekeys(VALUE_PAIR *vp, REQUEST_INFO *req_info,
+ unsigned char *);
+static int radius_setmppekeys2(VALUE_PAIR *vp, REQUEST_INFO *req_info);
+#endif
#ifndef MAXSESSIONID
#define MAXSESSIONID 32
#endif
+#ifndef MAXCLASSLEN
+#define MAXCLASSLEN 500
+#endif
+
struct radius_state {
- int accounting_started;
int initialized;
int client_port;
int choose_ip;
char config_file[MAXPATHLEN];
char session_id[MAXSESSIONID + 1];
time_t start_time;
+ int acct_interim_interval;
+ SERVER *authserver; /* Authentication server to use */
+ SERVER *acctserver; /* Accounting server to use */
+ int class_len;
+ char class[MAXCLASSLEN];
+ VALUE_PAIR *avp; /* Additional (user supplied) vp's to send to server */
};
+void (*radius_attributes_hook)(VALUE_PAIR *) = NULL;
+
+/* The pre_auth_hook MAY set authserver and acctserver if it wants.
+ In that case, they override the values in the radiusclient.conf file */
+void (*radius_pre_auth_hook)(char const *user,
+ SERVER **authserver,
+ SERVER **acctserver) = NULL;
+
static struct radius_state rstate;
-char pppd_version[] = VERSION;
+char pppd_version[] = PPPD_VERSION;
/**********************************************************************
* %FUNCTION: plugin_init
pap_auth_hook = radius_pap_auth;
chap_check_hook = radius_secret_check;
- chap_auth_hook = radius_chap_auth;
+ chap_verify_hook = radius_chap_verify;
ip_choose_hook = radius_choose_ip;
allowed_address_hook = radius_allowed_address;
info("RADIUS plugin initialized.");
}
+/**********************************************************************
+* %FUNCTION: add_avp
+* %ARGUMENTS:
+* argv -- the <attribute=value> pair to add
+* %RETURNS:
+* 1
+* %DESCRIPTION:
+* Adds an av pair to be passed on to the RADIUS server on each request.
+***********************************************************************/
+static int
+add_avp(char **argv)
+{
+ struct avpopt *p = malloc(sizeof(struct avpopt));
+
+ /* Append to a list of vp's for later parsing */
+ p->vpstr = strdup(*argv);
+ p->next = avpopt;
+ avpopt = p;
+
+ return 1;
+}
+
/**********************************************************************
* %FUNCTION: radius_secret_check
* %ARGUMENTS:
* 1 -- we are ALWAYS willing to supply a secret. :-)
* %DESCRIPTION:
* Tells pppd that we will try to authenticate the peer, and not to
-* worry about looking in /etc/ppp/*-secrets
+* worry about looking in *-secrets file(s)
***********************************************************************/
static int
radius_secret_check(void)
make_username_realm(user);
if (radius_pre_auth_hook) {
- radius_pre_auth_hook(rstate.user);
+ radius_pre_auth_hook(rstate.user,
+ &rstate.authserver,
+ &rstate.acctserver);
}
send = NULL;
/* Hack... the "port" is the ppp interface number. Should really be
the tty */
- rstate.client_port = get_client_port(ifname);
+ rstate.client_port = get_client_port(portnummap ? devnam : ifname);
av_type = PW_FRAMED;
rc_avpair_add(&send, PW_SERVICE_TYPE, &av_type, 0, VENDOR_NONE);
if (*remote_number) {
rc_avpair_add(&send, PW_CALLING_STATION_ID, remote_number, 0,
VENDOR_NONE);
- }
+ } else if (ipparam)
+ rc_avpair_add(&send, PW_CALLING_STATION_ID, ipparam, 0, VENDOR_NONE);
+
+ /* Add user specified vp's */
+ if (rstate.avp)
+ rc_avpair_insert(&send, NULL, rc_avpair_copy(rstate.avp));
- result = rc_auth(rstate.client_port, send, &received, radius_msg);
+ if (rstate.authserver) {
+ result = rc_auth_using_server(rstate.authserver,
+ rstate.client_port, send,
+ &received, radius_msg, NULL);
+ } else {
+ result = rc_auth(rstate.client_port, send, &received, radius_msg, NULL);
+ }
if (result == OK_RC) {
- if (radius_setparams(received, radius_msg) < 0) {
+ if (radius_setparams(received, radius_msg, NULL, NULL, NULL, NULL, 0) < 0) {
result = ERROR_RC;
}
}
}
/**********************************************************************
-* %FUNCTION: radius_chap_auth
+* %FUNCTION: radius_chap_verify
* %ARGUMENTS:
-* user -- user-name of peer
-* remmd -- hash received from peer
-* remmd_len -- length of remmd
-* cstate -- pppd's chap_state structure
+* user -- name of the peer
+* ourname -- name for this machine
+* id -- the ID byte in the challenge
+* digest -- points to the structure representing the digest type
+* challenge -- the challenge string we sent (length in first byte)
+* response -- the response (hash) the peer sent back (length in 1st byte)
+* message -- space for a message to be returned to the peer
+* message_space -- number of bytes available at *message.
* %RETURNS:
-* CHAP_SUCCESS if we can authenticate, CHAP_FAILURE if we cannot.
+* 1 if the response is good, 0 if it is bad
* %DESCRIPTION:
-* Performs CHAP authentication using RADIUS
+* Performs CHAP, MS-CHAP and MS-CHAPv2 authentication using RADIUS.
***********************************************************************/
static int
-radius_chap_auth(char *user,
- u_char *remmd,
- int remmd_len,
- chap_state *cstate)
+radius_chap_verify(char *user, char *ourname, int id,
+ struct chap_digest_type *digest,
+ unsigned char *challenge, unsigned char *response,
+ char *message, int message_space)
{
VALUE_PAIR *send, *received;
UINT4 av_type;
static char radius_msg[BUF_LEN];
int result;
- u_char cpassword[MD5_SIGNATURE_SIZE+1];
+ int challenge_len, response_len;
+ u_char cpassword[MAX_RESPONSE_LEN + 1];
+#ifdef PPP_WITH_MPPE
+ /* Need the RADIUS secret and Request Authenticator to decode MPPE */
+ REQUEST_INFO request_info, *req_info = &request_info;
+#else
+ REQUEST_INFO *req_info = NULL;
+#endif
+
+ challenge_len = *challenge++;
+ response_len = *response++;
+
radius_msg[0] = 0;
if (radius_init(radius_msg) < 0) {
error("%s", radius_msg);
- return CHAP_FAILURE;
+ return 0;
}
- /* we handle md5 digest at the moment */
- if (cstate->chal_type != CHAP_DIGEST_MD5) {
- error("RADIUS: Challenge type not MD5");
- return CHAP_FAILURE;
+ /* return error for types we can't handle */
+ if ((digest->code != CHAP_MD5)
+#ifdef PPP_WITH_CHAPMS
+ && (digest->code != CHAP_MICROSOFT)
+ && (digest->code != CHAP_MICROSOFT_V2)
+#endif
+ ) {
+ error("RADIUS: Challenge type %u unsupported", digest->code);
+ return 0;
}
/* Put user with potentially realm added in rstate.user */
if (!rstate.done_chap_once) {
make_username_realm(user);
- rstate.client_port = get_client_port (ifname);
+ rstate.client_port = get_client_port (portnummap ? devnam : ifname);
if (radius_pre_auth_hook) {
- radius_pre_auth_hook(rstate.user);
+ radius_pre_auth_hook(rstate.user,
+ &rstate.authserver,
+ &rstate.acctserver);
}
}
rc_avpair_add (&send, PW_USER_NAME, rstate.user , 0, VENDOR_NONE);
/*
- * add the CHAP-Password and CHAP-Challenge fields
+ * add the challenge and response fields
*/
+ switch (digest->code) {
+ case CHAP_MD5:
+ /* CHAP-Challenge and CHAP-Password */
+ if (response_len != MD5_HASH_SIZE)
+ return 0;
+ cpassword[0] = id;
+ memcpy(&cpassword[1], response, MD5_HASH_SIZE);
+
+ rc_avpair_add(&send, PW_CHAP_CHALLENGE,
+ challenge, challenge_len, VENDOR_NONE);
+ rc_avpair_add(&send, PW_CHAP_PASSWORD,
+ cpassword, MD5_HASH_SIZE + 1, VENDOR_NONE);
+ break;
+
+#ifdef PPP_WITH_CHAPMS
+ case CHAP_MICROSOFT:
+ {
+ /* MS-CHAP-Challenge and MS-CHAP-Response */
+ u_char *p = cpassword;
+
+ if (response_len != MS_CHAP_RESPONSE_LEN)
+ return 0;
+ *p++ = id;
+ /* The idiots use a different field order in RADIUS than PPP */
+ *p++ = response[MS_CHAP_USENT];
+ memcpy(p, response, MS_CHAP_LANMANRESP_LEN + MS_CHAP_NTRESP_LEN);
+
+ rc_avpair_add(&send, PW_MS_CHAP_CHALLENGE,
+ challenge, challenge_len, VENDOR_MICROSOFT);
+ rc_avpair_add(&send, PW_MS_CHAP_RESPONSE,
+ cpassword, MS_CHAP_RESPONSE_LEN + 1, VENDOR_MICROSOFT);
+ break;
+ }
- cpassword[0] = cstate->chal_id;
-
- memcpy(&cpassword[1], remmd, MD5_SIGNATURE_SIZE);
+ case CHAP_MICROSOFT_V2:
+ {
+ /* MS-CHAP-Challenge and MS-CHAP2-Response */
+ u_char *p = cpassword;
+
+ if (response_len != MS_CHAP2_RESPONSE_LEN)
+ return 0;
+ *p++ = id;
+ /* The idiots use a different field order in RADIUS than PPP */
+ *p++ = response[MS_CHAP2_FLAGS];
+ memcpy(p, response, (MS_CHAP2_PEER_CHAL_LEN + MS_CHAP2_RESERVED_LEN
+ + MS_CHAP2_NTRESP_LEN));
+
+ rc_avpair_add(&send, PW_MS_CHAP_CHALLENGE,
+ challenge, challenge_len, VENDOR_MICROSOFT);
+ rc_avpair_add(&send, PW_MS_CHAP2_RESPONSE,
+ cpassword, MS_CHAP2_RESPONSE_LEN + 1, VENDOR_MICROSOFT);
+ break;
+ }
+#endif
+ }
- rc_avpair_add(&send, PW_CHAP_PASSWORD, cpassword, MD5_SIGNATURE_SIZE + 1, VENDOR_NONE);
+ if (*remote_number) {
+ rc_avpair_add(&send, PW_CALLING_STATION_ID, remote_number, 0,
+ VENDOR_NONE);
+ } else if (ipparam)
+ rc_avpair_add(&send, PW_CALLING_STATION_ID, ipparam, 0, VENDOR_NONE);
- rc_avpair_add(&send, PW_CHAP_CHALLENGE, cstate->challenge, cstate->chal_len, VENDOR_NONE);
+ /* Add user specified vp's */
+ if (rstate.avp)
+ rc_avpair_insert(&send, NULL, rc_avpair_copy(rstate.avp));
/*
* make authentication with RADIUS server
*/
- result = rc_auth (rstate.client_port, send, &received, radius_msg);
+ if (rstate.authserver) {
+ result = rc_auth_using_server(rstate.authserver,
+ rstate.client_port, send,
+ &received, radius_msg, req_info);
+ } else {
+ result = rc_auth(rstate.client_port, send, &received, radius_msg,
+ req_info);
+ }
+
+ strlcpy(message, radius_msg, message_space);
if (result == OK_RC) {
if (!rstate.done_chap_once) {
- if (radius_setparams(received, radius_msg) < 0) {
+ if (radius_setparams(received, radius_msg, req_info, digest,
+ challenge, message, message_space) < 0) {
error("%s", radius_msg);
result = ERROR_RC;
} else {
rc_avpair_free(received);
rc_avpair_free (send);
- return (result == OK_RC) ? CHAP_SUCCESS : CHAP_FAILURE;
+ return (result == OK_RC);
}
/**********************************************************************
* %RETURNS:
* >= 0 on success; -1 on failure
* %DESCRIPTION:
-* Parses attributes sent by RADIUS server and sets them in pppd. Currently,
-* used only to set IP address.
+* Parses attributes sent by RADIUS server and sets them in pppd.
***********************************************************************/
static int
-radius_setparams(VALUE_PAIR *vp, char *msg)
+radius_setparams(VALUE_PAIR *vp, char *msg, REQUEST_INFO *req_info,
+ struct chap_digest_type *digest, unsigned char *challenge,
+ char *message, int message_space)
{
u_int32_t remote;
+ int ms_chap2_success = 0;
+#ifdef PPP_WITH_MPPE
+ int mppe_enc_keys = 0; /* whether or not these were received */
+ int mppe_enc_policy = 0;
+ int mppe_enc_types = 0;
+#endif
+#ifdef MSDNS
+ ipcp_options *wo = &ipcp_wantoptions[0];
+ ipcp_options *ao = &ipcp_allowoptions[0];
+ int got_msdns_1 = 0;
+ int got_msdns_2 = 0;
+ int got_wins_1 = 0;
+ int got_wins_2 = 0;
+#endif
/* Send RADIUS attributes to anyone else who might be interested */
if (radius_attributes_hook) {
*/
while (vp) {
- switch (vp->attribute) {
- case PW_SERVICE_TYPE:
- /* check for service type */
- /* if not FRAMED then exit */
- if (vp->lvalue != PW_FRAMED) {
- slprintf(msg, BUF_LEN, "RADIUS: wrong service type %ld for %s",
- vp->lvalue, rstate.user);
- return -1;
- }
- break;
- case PW_FRAMED_PROTOCOL:
- /* check for framed protocol type */
- /* if not PPP then also exit */
- if (vp->lvalue != PW_PPP) {
- slprintf(msg, BUF_LEN, "RADIUS: wrong framed protocol %ld for %s",
- vp->lvalue, rstate.user);
- return -1;
+ if (vp->vendorcode == VENDOR_NONE) {
+ switch (vp->attribute) {
+ case PW_SERVICE_TYPE:
+ /* check for service type */
+ /* if not FRAMED then exit */
+ if (vp->lvalue != PW_FRAMED) {
+ slprintf(msg, BUF_LEN, "RADIUS: wrong service type %ld for %s",
+ vp->lvalue, rstate.user);
+ return -1;
+ }
+ break;
+
+ case PW_FRAMED_PROTOCOL:
+ /* check for framed protocol type */
+ /* if not PPP then also exit */
+ if (vp->lvalue != PW_PPP) {
+ slprintf(msg, BUF_LEN, "RADIUS: wrong framed protocol %ld for %s",
+ vp->lvalue, rstate.user);
+ return -1;
+ }
+ break;
+
+ case PW_SESSION_TIMEOUT:
+ /* Session timeout */
+ maxconnect = vp->lvalue;
+ break;
+ case PW_FILTER_ID:
+ /* packet filter, will be handled via ip-(up|down) script */
+ script_setenv("RADIUS_FILTER_ID", (char*) vp->strvalue, 1);
+ break;
+ case PW_FRAMED_ROUTE:
+ /* route, will be handled via ip-(up|down) script */
+ script_setenv("RADIUS_FRAMED_ROUTE", (char*) vp->strvalue, 1);
+ break;
+ case PW_IDLE_TIMEOUT:
+ /* idle parameter */
+ idle_time_limit = vp->lvalue;
+ break;
+#ifdef PPP_WITH_MAXOCTETS
+ case PW_SESSION_OCTETS_LIMIT:
+ /* Session traffic limit */
+ maxoctets = vp->lvalue;
+ break;
+ case PW_OCTETS_DIRECTION:
+ /* Session traffic limit direction check */
+ maxoctets_dir = ( vp->lvalue > 4 ) ? 0 : vp->lvalue ;
+ break;
+#endif
+ case PW_ACCT_INTERIM_INTERVAL:
+ /* Send accounting updates every few seconds */
+ rstate.acct_interim_interval = vp->lvalue;
+ /* RFC says it MUST NOT be less than 60 seconds */
+ /* We use "0" to signify not sending updates */
+ if (rstate.acct_interim_interval &&
+ rstate.acct_interim_interval < 60) {
+ rstate.acct_interim_interval = 60;
+ }
+ break;
+ case PW_FRAMED_IP_ADDRESS:
+ /* seting up remote IP addresses */
+ remote = vp->lvalue;
+ if (remote == 0xffffffff) {
+ /* 0xffffffff means user should be allowed to select one */
+ rstate.any_ip_addr_ok = 1;
+ } else if (remote != 0xfffffffe) {
+ /* 0xfffffffe means NAS should select an ip address */
+ remote = htonl(vp->lvalue);
+ if (bad_ip_adrs (remote)) {
+ slprintf(msg, BUF_LEN, "RADIUS: bad remote IP address %I for %s",
+ remote, rstate.user);
+ return -1;
+ }
+ rstate.choose_ip = 1;
+ rstate.ip_addr = remote;
+ }
+ break;
+ case PW_NAS_IP_ADDRESS:
+ wo->ouraddr = htonl(vp->lvalue);
+ break;
+ case PW_CLASS:
+ /* Save Class attribute to pass it in accounting request */
+ if (vp->lvalue <= MAXCLASSLEN) {
+ rstate.class_len=vp->lvalue;
+ memcpy(rstate.class, vp->strvalue, rstate.class_len);
+ } /* else too big for our buffer - ignore it */
+ break;
+ case PW_FRAMED_MTU:
+ netif_set_mtu(rstate.client_port,MIN(netif_get_mtu(rstate.client_port),vp->lvalue));
+ break;
}
- break;
- case PW_FRAMED_IP_ADDRESS:
- /* seting up remote IP addresses */
- remote = vp->lvalue;
- if (remote == 0xffffffff) {
- /* 0xffffffff means user should be allowed to select one */
- rstate.any_ip_addr_ok = 1;
- } else if (remote != 0xfffffffe) {
- /* 0xfffffffe means NAS should select an ip address */
- remote = htonl(vp->lvalue);
- if (bad_ip_adrs (remote)) {
- slprintf(msg, BUF_LEN, "RADIUS: bad remote IP address %I for %s",
- remote, rstate.user);
+
+ } else if (vp->vendorcode == VENDOR_MICROSOFT) {
+#ifdef PPP_WITH_CHAPMS
+ switch (vp->attribute) {
+ case PW_MS_CHAP2_SUCCESS:
+ if ((vp->lvalue != 43) || strncmp((char*) vp->strvalue + 1, "S=", 2)) {
+ slprintf(msg,BUF_LEN,"RADIUS: bad MS-CHAP2-Success packet");
+ return -1;
+ }
+ if (message != NULL)
+ strlcpy(message, (char*) vp->strvalue + 1, message_space);
+ ms_chap2_success = 1;
+ break;
+
+#ifdef PPP_WITH_MPPE
+ case PW_MS_CHAP_MPPE_KEYS:
+ if (radius_setmppekeys(vp, req_info, challenge) < 0) {
+ slprintf(msg, BUF_LEN,
+ "RADIUS: bad MS-CHAP-MPPE-Keys attribute");
return -1;
}
- rstate.choose_ip = 1;
- rstate.ip_addr = remote;
+ mppe_enc_keys = 1;
+ break;
+
+ case PW_MS_MPPE_SEND_KEY:
+ case PW_MS_MPPE_RECV_KEY:
+ if (radius_setmppekeys2(vp, req_info) < 0) {
+ slprintf(msg, BUF_LEN,
+ "RADIUS: bad MS-MPPE-%s-Key attribute",
+ (vp->attribute == PW_MS_MPPE_SEND_KEY)?
+ "Send": "Recv");
+ return -1;
+ }
+ mppe_enc_keys = 1;
+ break;
+
+ case PW_MS_MPPE_ENCRYPTION_POLICY:
+ mppe_enc_policy = vp->lvalue; /* save for later */
+ break;
+
+ case PW_MS_MPPE_ENCRYPTION_TYPES:
+ mppe_enc_types = vp->lvalue; /* save for later */
+ break;
+
+#endif /* PPP_WITH_MPPE */
+#ifdef MSDNS
+ case PW_MS_PRIMARY_DNS_SERVER:
+ ao->dnsaddr[0] = htonl(vp->lvalue);
+ got_msdns_1 = 1;
+ if (!got_msdns_2)
+ ao->dnsaddr[1] = ao->dnsaddr[0];
+ break;
+ case PW_MS_SECONDARY_DNS_SERVER:
+ ao->dnsaddr[1] = htonl(vp->lvalue);
+ got_msdns_2 = 1;
+ if (!got_msdns_1)
+ ao->dnsaddr[0] = ao->dnsaddr[1];
+ break;
+ case PW_MS_PRIMARY_NBNS_SERVER:
+ ao->winsaddr[0] = htonl(vp->lvalue);
+ got_wins_1 = 1;
+ if (!got_wins_2)
+ ao->winsaddr[1] = ao->winsaddr[0];
+ break;
+ case PW_MS_SECONDARY_NBNS_SERVER:
+ ao->winsaddr[1] = htonl(vp->lvalue);
+ got_wins_2 = 1;
+ if (!got_wins_1)
+ ao->winsaddr[0] = ao->winsaddr[1];
+ break;
+#endif /* MSDNS */
}
- break;
+#endif /* PPP_WITH_CHAPMS */
}
vp = vp->next;
}
+
+ /* Require a valid MS-CHAP2-SUCCESS for MS-CHAPv2 auth */
+ if (digest && (digest->code == CHAP_MICROSOFT_V2) && !ms_chap2_success)
+ return -1;
+
+#ifdef PPP_WITH_MPPE
+ /*
+ * Require both policy and key attributes to indicate a valid key.
+ * Note that if the policy value was '0' we don't set the key!
+ */
+ if (mppe_enc_policy && mppe_enc_keys) {
+ /* Set/modify allowed encryption types. */
+ if (mppe_enc_types)
+ mppe_set_enc_types(mppe_enc_policy, mppe_enc_types);
+ return 0;
+ }
+ mppe_clear_keys();
+#endif
+
+ return 0;
+}
+
+#ifdef PPP_WITH_MPPE
+/**********************************************************************
+* %FUNCTION: radius_setmppekeys
+* %ARGUMENTS:
+* vp -- value pair holding MS-CHAP-MPPE-KEYS attribute
+* req_info -- radius request information used for encryption
+* %RETURNS:
+* >= 0 on success; -1 on failure
+* %DESCRIPTION:
+* Decrypt the "key" provided by the RADIUS server for MPPE encryption.
+* See RFC 2548.
+***********************************************************************/
+static int
+radius_setmppekeys(VALUE_PAIR *vp, REQUEST_INFO *req_info,
+ unsigned char *challenge)
+{
+ int i;
+ MD5_CTX Context;
+ u_char plain[32];
+ u_char buf[16];
+
+ if (vp->lvalue != 32) {
+ error("RADIUS: Incorrect attribute length (%d) for MS-CHAP-MPPE-Keys",
+ vp->lvalue);
+ return -1;
+ }
+
+ memcpy(plain, vp->strvalue, sizeof(plain));
+
+ MD5_Init(&Context);
+ MD5_Update(&Context, req_info->secret, strlen(req_info->secret));
+ MD5_Update(&Context, req_info->request_vector, AUTH_VECTOR_LEN);
+ MD5_Final(buf, &Context);
+
+ for (i = 0; i < 16; i++)
+ plain[i] ^= buf[i];
+
+ MD5_Init(&Context);
+ MD5_Update(&Context, req_info->secret, strlen(req_info->secret));
+ MD5_Update(&Context, vp->strvalue, 16);
+ MD5_Final(buf, &Context);
+
+ for(i = 0; i < 16; i++)
+ plain[i + 16] ^= buf[i];
+
+ /*
+ * Annoying. The "key" returned is just the NTPasswordHashHash, which
+ * the NAS (us) doesn't need; we only need the start key. So we have
+ * to generate the start key, sigh. NB: We do not support the LM-Key.
+ */
+ mppe_set_chapv1(challenge, &plain[8]);
+
+ return 0;
+}
+
+/**********************************************************************
+* %FUNCTION: radius_setmppekeys2
+* %ARGUMENTS:
+* vp -- value pair holding MS-MPPE-SEND-KEY or MS-MPPE-RECV-KEY attribute
+* req_info -- radius request information used for encryption
+* %RETURNS:
+* >= 0 on success; -1 on failure
+* %DESCRIPTION:
+* Decrypt the key provided by the RADIUS server for MPPE encryption.
+* See RFC 2548.
+***********************************************************************/
+static int
+radius_setmppekeys2(VALUE_PAIR *vp, REQUEST_INFO *req_info)
+{
+ int i;
+ MD5_CTX Context;
+ u_char *salt = vp->strvalue;
+ u_char *crypt = vp->strvalue + 2;
+ u_char plain[32];
+ u_char buf[MD5_HASH_SIZE];
+ char *type = "Send";
+
+ if (vp->attribute == PW_MS_MPPE_RECV_KEY)
+ type = "Recv";
+
+ if (vp->lvalue != 34) {
+ error("RADIUS: Incorrect attribute length (%d) for MS-MPPE-%s-Key",
+ vp->lvalue, type);
+ return -1;
+ }
+
+ if ((salt[0] & 0x80) == 0) {
+ error("RADIUS: Illegal salt value for MS-MPPE-%s-Key attribute", type);
+ return -1;
+ }
+
+ memcpy(plain, crypt, 32);
+
+ MD5_Init(&Context);
+ MD5_Update(&Context, req_info->secret, strlen(req_info->secret));
+ MD5_Update(&Context, req_info->request_vector, AUTH_VECTOR_LEN);
+ MD5_Update(&Context, salt, 2);
+ MD5_Final(buf, &Context);
+
+ for (i = 0; i < 16; i++)
+ plain[i] ^= buf[i];
+
+ if (plain[0] != 16) {
+ error("RADIUS: Incorrect key length (%d) for MS-MPPE-%s-Key attribute",
+ (int) plain[0], type);
+ return -1;
+ }
+
+ MD5_Init(&Context);
+ MD5_Update(&Context, req_info->secret, strlen(req_info->secret));
+ MD5_Update(&Context, crypt, 16);
+ MD5_Final(buf, &Context);
+
+ plain[16] ^= buf[0]; /* only need the first byte */
+
+ if (vp->attribute == PW_MS_MPPE_SEND_KEY)
+ mppe_set_keys(plain + 1, NULL, 16);
+ else
+ mppe_set_keys(NULL, plain + 1, 16);
+
return 0;
}
+#endif /* PPP_WITH_MPPE */
/**********************************************************************
* %FUNCTION: radius_acct_start
rstate.start_time = time(NULL);
- strncpy(rstate.session_id, rc_mksid(), sizeof(rstate.session_id));
+ strlcpy(rstate.session_id, rc_mksid(), MAXSESSIONID);
rc_avpair_add(&send, PW_ACCT_SESSION_ID,
rstate.session_id, 0, VENDOR_NONE);
rc_avpair_add(&send, PW_USER_NAME,
rstate.user, 0, VENDOR_NONE);
+ if (rstate.class_len > 0)
+ rc_avpair_add(&send, PW_CLASS,
+ rstate.class, rstate.class_len, VENDOR_NONE);
+
av_type = PW_STATUS_START;
rc_avpair_add(&send, PW_ACCT_STATUS_TYPE, &av_type, 0, VENDOR_NONE);
if (*remote_number) {
rc_avpair_add(&send, PW_CALLING_STATION_ID,
remote_number, 0, VENDOR_NONE);
- }
+ } else if (ipparam)
+ rc_avpair_add(&send, PW_CALLING_STATION_ID, ipparam, 0, VENDOR_NONE);
av_type = PW_RADIUS;
rc_avpair_add(&send, PW_ACCT_AUTHENTIC, &av_type, 0, VENDOR_NONE);
- av_type = PW_ASYNC;
+ av_type = ( using_pty ? PW_VIRTUAL : ( sync_serial ? PW_SYNC : PW_ASYNC ) );
rc_avpair_add(&send, PW_NAS_PORT_TYPE, &av_type, 0, VENDOR_NONE);
hisaddr = ho->hisaddr;
av_type = htonl(hisaddr);
rc_avpair_add(&send, PW_FRAMED_IP_ADDRESS , &av_type , 0, VENDOR_NONE);
- result = rc_acct(rstate.client_port, send);
+ /* Add user specified vp's */
+ if (rstate.avp)
+ rc_avpair_insert(&send, NULL, rc_avpair_copy(rstate.avp));
+
+ if (rstate.acctserver) {
+ result = rc_acct_using_server(rstate.acctserver,
+ rstate.client_port, send);
+ } else {
+ result = rc_acct(rstate.client_port, send);
+ }
rc_avpair_free(send);
/* RADIUS server could be down so make this a warning */
syslog(LOG_WARNING,
"Accounting START failed for %s", rstate.user);
- } else {
- rstate.accounting_started = 1;
+ }
+
+ /* Kick off periodic accounting reports */
+ if (rstate.acct_interim_interval) {
+ TIMEOUT(radius_acct_interim, NULL, rstate.acct_interim_interval);
}
}
return;
}
- if (!rstate.accounting_started) {
- return;
- }
+ if (rstate.acct_interim_interval)
+ UNTIMEOUT(radius_acct_interim, NULL);
- rstate.accounting_started = 0;
rc_avpair_add(&send, PW_ACCT_SESSION_ID, rstate.session_id,
0, VENDOR_NONE);
rc_avpair_add(&send, PW_USER_NAME, rstate.user, 0, VENDOR_NONE);
+ if (rstate.class_len > 0)
+ rc_avpair_add(&send, PW_CLASS,
+ rstate.class, rstate.class_len, VENDOR_NONE);
+
av_type = PW_STATUS_STOP;
rc_avpair_add(&send, PW_ACCT_STATUS_TYPE, &av_type, 0, VENDOR_NONE);
av_type = link_connect_time;
rc_avpair_add(&send, PW_ACCT_SESSION_TIME, &av_type, 0, VENDOR_NONE);
- av_type = link_stats.bytes_out;
+ av_type = link_stats.bytes_out & 0xFFFFFFFF;
rc_avpair_add(&send, PW_ACCT_OUTPUT_OCTETS, &av_type, 0, VENDOR_NONE);
- av_type = link_stats.bytes_in;
+ if (link_stats.bytes_out > 0xFFFFFFFF) {
+ av_type = link_stats.bytes_out >> 32;
+ rc_avpair_add(&send, PW_ACCT_OUTPUT_GIGAWORDS, &av_type, 0, VENDOR_NONE);
+ }
+
+ av_type = link_stats.bytes_in & 0xFFFFFFFF;
rc_avpair_add(&send, PW_ACCT_INPUT_OCTETS, &av_type, 0, VENDOR_NONE);
+ if (link_stats.bytes_in > 0xFFFFFFFF) {
+ av_type = link_stats.bytes_in >> 32;
+ rc_avpair_add(&send, PW_ACCT_INPUT_GIGAWORDS, &av_type, 0, VENDOR_NONE);
+ }
+
av_type = link_stats.pkts_out;
rc_avpair_add(&send, PW_ACCT_OUTPUT_PACKETS, &av_type, 0, VENDOR_NONE);
if (*remote_number) {
rc_avpair_add(&send, PW_CALLING_STATION_ID,
remote_number, 0, VENDOR_NONE);
- }
+ } else if (ipparam)
+ rc_avpair_add(&send, PW_CALLING_STATION_ID, ipparam, 0, VENDOR_NONE);
- av_type = PW_ASYNC;
+ av_type = ( using_pty ? PW_VIRTUAL : ( sync_serial ? PW_SYNC : PW_ASYNC ) );
rc_avpair_add(&send, PW_NAS_PORT_TYPE, &av_type, 0, VENDOR_NONE);
+ av_type = PW_NAS_ERROR;
+ switch( status ) {
+ case EXIT_OK:
+ case EXIT_USER_REQUEST:
+ av_type = PW_USER_REQUEST;
+ break;
+
+ case EXIT_HANGUP:
+ case EXIT_PEER_DEAD:
+ case EXIT_CONNECT_FAILED:
+ av_type = PW_LOST_CARRIER;
+ break;
+
+ case EXIT_INIT_FAILED:
+ case EXIT_OPEN_FAILED:
+ case EXIT_LOCK_FAILED:
+ case EXIT_PTYCMD_FAILED:
+ av_type = PW_PORT_ERROR;
+ break;
+
+ case EXIT_PEER_AUTH_FAILED:
+ case EXIT_AUTH_TOPEER_FAILED:
+ case EXIT_NEGOTIATION_FAILED:
+ case EXIT_CNID_AUTH_FAILED:
+ av_type = PW_SERVICE_UNAVAILABLE;
+ break;
+
+ case EXIT_IDLE_TIMEOUT:
+ av_type = PW_ACCT_IDLE_TIMEOUT;
+ break;
+
+ case EXIT_CALLBACK:
+ av_type = PW_CALLBACK;
+ break;
+
+ case EXIT_CONNECT_TIME:
+ av_type = PW_ACCT_SESSION_TIMEOUT;
+ break;
+
+#ifdef PPP_WITH_MAXOCTETS
+ case EXIT_TRAFFIC_LIMIT:
+ av_type = PW_NAS_REQUEST;
+ break;
+#endif
+
+ default:
+ av_type = PW_NAS_ERROR;
+ break;
+ }
+ rc_avpair_add(&send, PW_ACCT_TERMINATE_CAUSE, &av_type, 0, VENDOR_NONE);
+
hisaddr = ho->hisaddr;
av_type = htonl(hisaddr);
rc_avpair_add(&send, PW_FRAMED_IP_ADDRESS , &av_type , 0, VENDOR_NONE);
- result = rc_acct(rstate.client_port, send);
+ /* Add user specified vp's */
+ if (rstate.avp)
+ rc_avpair_insert(&send, NULL, rc_avpair_copy(rstate.avp));
+
+ if (rstate.acctserver) {
+ result = rc_acct_using_server(rstate.acctserver,
+ rstate.client_port, send);
+ } else {
+ result = rc_acct(rstate.client_port, send);
+ }
+
if (result != OK_RC) {
/* RADIUS server could be down so make this a warning */
syslog(LOG_WARNING,
rc_avpair_free(send);
}
+/**********************************************************************
+* %FUNCTION: radius_acct_interim
+* %ARGUMENTS:
+* None
+* %RETURNS:
+* Nothing
+* %DESCRIPTION:
+* Sends an interim accounting message to the RADIUS server
+***********************************************************************/
+static void
+radius_acct_interim(void *ignored)
+{
+ UINT4 av_type;
+ VALUE_PAIR *send = NULL;
+ ipcp_options *ho = &ipcp_hisoptions[0];
+ u_int32_t hisaddr;
+ int result;
+
+ if (!rstate.initialized) {
+ return;
+ }
+
+ rc_avpair_add(&send, PW_ACCT_SESSION_ID, rstate.session_id,
+ 0, VENDOR_NONE);
+
+ rc_avpair_add(&send, PW_USER_NAME, rstate.user, 0, VENDOR_NONE);
+
+ if (rstate.class_len > 0)
+ rc_avpair_add(&send, PW_CLASS,
+ rstate.class, rstate.class_len, VENDOR_NONE);
+
+ av_type = PW_STATUS_ALIVE;
+ rc_avpair_add(&send, PW_ACCT_STATUS_TYPE, &av_type, 0, VENDOR_NONE);
+
+ av_type = PW_FRAMED;
+ rc_avpair_add(&send, PW_SERVICE_TYPE, &av_type, 0, VENDOR_NONE);
+
+ av_type = PW_PPP;
+ rc_avpair_add(&send, PW_FRAMED_PROTOCOL, &av_type, 0, VENDOR_NONE);
+
+ av_type = PW_RADIUS;
+ rc_avpair_add(&send, PW_ACCT_AUTHENTIC, &av_type, 0, VENDOR_NONE);
+
+ /* Update link stats */
+ update_link_stats(0);
+
+ if (link_stats_valid) {
+ link_stats_valid = 0; /* Force later code to update */
+
+ av_type = link_connect_time;
+ rc_avpair_add(&send, PW_ACCT_SESSION_TIME, &av_type, 0, VENDOR_NONE);
+
+ av_type = link_stats.bytes_out & 0xFFFFFFFF;
+ rc_avpair_add(&send, PW_ACCT_OUTPUT_OCTETS, &av_type, 0, VENDOR_NONE);
+
+ if (link_stats.bytes_out > 0xFFFFFFFF) {
+ av_type = link_stats.bytes_out >> 32;
+ rc_avpair_add(&send, PW_ACCT_OUTPUT_GIGAWORDS, &av_type, 0, VENDOR_NONE);
+ }
+
+ av_type = link_stats.bytes_in & 0xFFFFFFFF;
+ rc_avpair_add(&send, PW_ACCT_INPUT_OCTETS, &av_type, 0, VENDOR_NONE);
+
+ if (link_stats.bytes_in > 0xFFFFFFFF) {
+ av_type = link_stats.bytes_in >> 32;
+ rc_avpair_add(&send, PW_ACCT_INPUT_GIGAWORDS, &av_type, 0, VENDOR_NONE);
+ }
+
+ av_type = link_stats.pkts_out;
+ rc_avpair_add(&send, PW_ACCT_OUTPUT_PACKETS, &av_type, 0, VENDOR_NONE);
+
+ av_type = link_stats.pkts_in;
+ rc_avpair_add(&send, PW_ACCT_INPUT_PACKETS, &av_type, 0, VENDOR_NONE);
+ }
+
+ if (*remote_number) {
+ rc_avpair_add(&send, PW_CALLING_STATION_ID,
+ remote_number, 0, VENDOR_NONE);
+ } else if (ipparam)
+ rc_avpair_add(&send, PW_CALLING_STATION_ID, ipparam, 0, VENDOR_NONE);
+
+ av_type = ( using_pty ? PW_VIRTUAL : ( sync_serial ? PW_SYNC : PW_ASYNC ) );
+ rc_avpair_add(&send, PW_NAS_PORT_TYPE, &av_type, 0, VENDOR_NONE);
+
+ hisaddr = ho->hisaddr;
+ av_type = htonl(hisaddr);
+ rc_avpair_add(&send, PW_FRAMED_IP_ADDRESS , &av_type , 0, VENDOR_NONE);
+
+ /* Add user specified vp's */
+ if (rstate.avp)
+ rc_avpair_insert(&send, NULL, rc_avpair_copy(rstate.avp));
+
+ if (rstate.acctserver) {
+ result = rc_acct_using_server(rstate.acctserver,
+ rstate.client_port, send);
+ } else {
+ result = rc_acct(rstate.client_port, send);
+ }
+
+ if (result != OK_RC) {
+ /* RADIUS server could be down so make this a warning */
+ syslog(LOG_WARNING,
+ "Interim accounting failed for %s", rstate.user);
+ }
+ rc_avpair_free(send);
+
+ /* Schedule another one */
+ TIMEOUT(radius_acct_interim, NULL, rstate.acct_interim_interval);
+}
+
/**********************************************************************
* %FUNCTION: radius_ip_up
* %ARGUMENTS:
rc_conf_str("mapfile"));
return -1;
}
+
+ /* Add av pairs saved during option parsing */
+ while (avpopt) {
+ struct avpopt *n = avpopt->next;
+
+ rc_avpair_parse(avpopt->vpstr, &rstate.avp);
+ free(avpopt->vpstr);
+ free(avpopt);
+ avpopt = n;
+ }
return 0;
}
{
return rstate.user;
}
-