X-Git-Url: https://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=pppd%2Fplugins%2Fradius%2Fradius.c;h=254ed904184f150330a0696a532f83a23a8d8f08;hp=48882a9e1c84be070d6a56e21e9c01b7704280e4;hb=HEAD;hpb=e50870a901749c7390109404e90c095ea3ef7072 diff --git a/pppd/plugins/radius/radius.c b/pppd/plugins/radius/radius.c index 48882a9..e99bc75 100644 --- a/pppd/plugins/radius/radius.c +++ b/pppd/plugins/radius/radius.c @@ -24,63 +24,75 @@ * ***********************************************************************/ static char const RCSID[] = -"$Id: radius.c,v 1.19 2002/12/23 23:24:37 fcusack Exp $"; - -#include "pppd.h" -#include "chap.h" -#ifdef CHAPMS -#include "chap_ms.h" -#ifdef MPPE -#include "md5.h" -#endif -#endif -#include "radiusclient.h" -#include "fsm.h" -#include "ipcp.h" +"$Id: radius.c,v 1.32 2008/05/26 09:18:08 paulus Exp $"; + #include #include #include +#include #include +#include +#include +#include +#include + +#include +#include +#include +#include +#ifdef PPP_WITH_CHAPMS +#include +#ifdef PPP_WITH_MPPE +#include +#endif +#endif +#include +#include +#include + +#include "radiusclient.h" #define BUF_LEN 1024 +#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 } }; -static int radius_secret_check(void); -static int radius_pap_auth(char *user, - char *passwd, - 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 pap_check_hook_fn radius_secret_check; +static pap_auth_hook_fn radius_pap_auth; +static chap_verify_hook_fn radius_chap_verify; 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(chap_state *cstate, VALUE_PAIR *vp, char *msg, - REQUEST_INFO *req_info); +static void make_username_realm(const char *user); +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 get_client_port(const char *ifname); static int radius_allowed_address(u_int32_t addr); static void radius_acct_interim(void *); -#ifdef MPPE +#ifdef PPP_WITH_MPPE static int radius_setmppekeys(VALUE_PAIR *vp, REQUEST_INFO *req_info, - chap_state *); + unsigned char *); static int radius_setmppekeys2(VALUE_PAIR *vp, REQUEST_INFO *req_info); #endif @@ -93,7 +105,6 @@ static int radius_setmppekeys2(VALUE_PAIR *vp, REQUEST_INFO *req_info); #endif struct radius_state { - int accounting_started; int initialized; int client_port; int choose_ip; @@ -122,7 +133,7 @@ void (*radius_pre_auth_hook)(char const *user, static struct radius_state rstate; -char pppd_version[] = VERSION; +char pppd_version[] = PPPD_VERSION; /********************************************************************** * %FUNCTION: plugin_init @@ -140,20 +151,20 @@ plugin_init(void) 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; - add_notifier(&ip_up_notifier, radius_ip_up, NULL); - add_notifier(&ip_down_notifier, radius_ip_down, NULL); + ppp_add_notify(NF_IP_UP, radius_ip_up, NULL); + ppp_add_notify(NF_IP_DOWN, radius_ip_down, NULL); memset(&rstate, 0, sizeof(rstate)); strlcpy(rstate.config_file, "/etc/radiusclient/radiusclient.conf", sizeof(rstate.config_file)); - add_options(Options); + ppp_add_options(Options); info("RADIUS plugin initialized."); } @@ -188,7 +199,7 @@ add_avp(char **argv) * 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) @@ -237,6 +248,8 @@ radius_pap_auth(char *user, UINT4 av_type; int result; static char radius_msg[BUF_LEN]; + const char *remote_number; + const char *ipparam; radius_msg[0] = 0; *msgp = radius_msg; @@ -259,7 +272,7 @@ radius_pap_auth(char *user, /* 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 ? ppp_devnam() : ppp_ifname()); av_type = PW_FRAMED; rc_avpair_add(&send, PW_SERVICE_TYPE, &av_type, 0, VENDOR_NONE); @@ -269,10 +282,13 @@ radius_pap_auth(char *user, rc_avpair_add(&send, PW_USER_NAME, rstate.user , 0, VENDOR_NONE); rc_avpair_add(&send, PW_USER_PASSWORD, passwd, 0, VENDOR_NONE); - if (*remote_number) { + remote_number = ppp_get_remote_number(); + ipparam = ppp_ipparam(); + 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) @@ -287,7 +303,7 @@ radius_pap_auth(char *user, } if (result == OK_RC) { - if (radius_setparams(NULL, received, radius_msg, NULL) < 0) { + if (radius_setparams(received, radius_msg, NULL, NULL, NULL, NULL, 0) < 0) { result = ERROR_RC; } } @@ -300,57 +316,67 @@ radius_pap_auth(char *user, } /********************************************************************** -* %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, 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[MAX_RESPONSE_LENGTH + 1]; -#ifdef MPPE + 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 + const char *remote_number; + const char *ipparam; + + 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; } /* return error for types we can't handle */ - if ((cstate->chal_type != CHAP_DIGEST_MD5) -#ifdef CHAPMS - && (cstate->chal_type != CHAP_MICROSOFT) - && (cstate->chal_type != CHAP_MICROSOFT_V2) + 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", cstate->chal_type); - return CHAP_FAILURE; + 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 ? ppp_devnam() : ppp_ifname()); if (radius_pre_auth_hook) { radius_pre_auth_hook(rstate.user, &rstate.authserver, @@ -371,35 +397,35 @@ radius_chap_auth(char *user, /* * add the challenge and response fields */ - switch (cstate->chal_type) { - case CHAP_DIGEST_MD5: + switch (digest->code) { + case CHAP_MD5: /* CHAP-Challenge and CHAP-Password */ - cpassword[0] = cstate->chal_id; - memcpy(&cpassword[1], remmd, MD5_SIGNATURE_SIZE); + if (response_len != MD5_DIGEST_LENGTH) + return 0; + cpassword[0] = id; + memcpy(&cpassword[1], response, MD5_DIGEST_LENGTH); rc_avpair_add(&send, PW_CHAP_CHALLENGE, - cstate->challenge, cstate->chal_len, VENDOR_NONE); + challenge, challenge_len, VENDOR_NONE); rc_avpair_add(&send, PW_CHAP_PASSWORD, - cpassword, MD5_SIGNATURE_SIZE + 1, VENDOR_NONE); + cpassword, MD5_DIGEST_LENGTH + 1, VENDOR_NONE); break; -#ifdef CHAPMS +#ifdef PPP_WITH_CHAPMS case CHAP_MICROSOFT: { /* MS-CHAP-Challenge and MS-CHAP-Response */ - MS_ChapResponse *rmd = (MS_ChapResponse *) remmd; u_char *p = cpassword; - *p++ = cstate->chal_id; + if (response_len != MS_CHAP_RESPONSE_LEN) + return 0; + *p++ = id; /* The idiots use a different field order in RADIUS than PPP */ - memcpy(p, rmd->UseNT, sizeof(rmd->UseNT)); - p += sizeof(rmd->UseNT); - memcpy(p, rmd->LANManResp, sizeof(rmd->LANManResp)); - p += sizeof(rmd->LANManResp); - memcpy(p, rmd->NTResp, sizeof(rmd->NTResp)); + *p++ = response[MS_CHAP_USENT]; + memcpy(p, response, MS_CHAP_LANMANRESP_LEN + MS_CHAP_NTRESP_LEN); rc_avpair_add(&send, PW_MS_CHAP_CHALLENGE, - cstate->challenge, cstate->chal_len, VENDOR_MICROSOFT); + challenge, challenge_len, VENDOR_MICROSOFT); rc_avpair_add(&send, PW_MS_CHAP_RESPONSE, cpassword, MS_CHAP_RESPONSE_LEN + 1, VENDOR_MICROSOFT); break; @@ -408,21 +434,18 @@ radius_chap_auth(char *user, case CHAP_MICROSOFT_V2: { /* MS-CHAP-Challenge and MS-CHAP2-Response */ - MS_Chap2Response *rmd = (MS_Chap2Response *) remmd; u_char *p = cpassword; - *p++ = cstate->chal_id; + if (response_len != MS_CHAP2_RESPONSE_LEN) + return 0; + *p++ = id; /* The idiots use a different field order in RADIUS than PPP */ - memcpy(p, rmd->Flags, sizeof(rmd->Flags)); - p += sizeof(rmd->Flags); - memcpy(p, rmd->PeerChallenge, sizeof(rmd->PeerChallenge)); - p += sizeof(rmd->PeerChallenge); - memcpy(p, rmd->Reserved, sizeof(rmd->Reserved)); - p += sizeof(rmd->Reserved); - memcpy(p, rmd->NTResp, sizeof(rmd->NTResp)); + *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, - cstate->challenge, cstate->chal_len, VENDOR_MICROSOFT); + challenge, challenge_len, VENDOR_MICROSOFT); rc_avpair_add(&send, PW_MS_CHAP2_RESPONSE, cpassword, MS_CHAP2_RESPONSE_LEN + 1, VENDOR_MICROSOFT); break; @@ -430,10 +453,13 @@ radius_chap_auth(char *user, #endif } - if (*remote_number) { + remote_number = ppp_get_remote_number(); + ipparam = ppp_ipparam(); + 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) @@ -452,9 +478,12 @@ radius_chap_auth(char *user, req_info); } + strlcpy(message, radius_msg, message_space); + if (result == OK_RC) { if (!rstate.done_chap_once) { - if (radius_setparams(cstate, received, radius_msg, req_info) < 0) { + if (radius_setparams(received, radius_msg, req_info, digest, + challenge, message, message_space) < 0) { error("%s", radius_msg); result = ERROR_RC; } else { @@ -465,7 +494,7 @@ radius_chap_auth(char *user, rc_avpair_free(received); rc_avpair_free (send); - return (result == OK_RC) ? CHAP_SUCCESS : CHAP_FAILURE; + return (result == OK_RC); } /********************************************************************** @@ -479,7 +508,7 @@ radius_chap_auth(char *user, * then the default realm from the radiusclient config file is added. ***********************************************************************/ static void -make_username_realm(char *user) +make_username_realm(const char *user) { char *default_realm; @@ -502,7 +531,6 @@ make_username_realm(char *user) /********************************************************************** * %FUNCTION: radius_setparams * %ARGUMENTS: -* cstate -- pppd's chap_state structure * vp -- received value-pairs * msg -- buffer in which to place error message. Holds up to BUF_LEN chars * %RETURNS: @@ -511,11 +539,25 @@ make_username_realm(char *user) * Parses attributes sent by RADIUS server and sets them in pppd. ***********************************************************************/ static int -radius_setparams(chap_state *cstate, VALUE_PAIR *vp, char *msg, - REQUEST_INFO *req_info) +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) { @@ -552,18 +594,28 @@ radius_setparams(chap_state *cstate, VALUE_PAIR *vp, char *msg, case PW_SESSION_TIMEOUT: /* Session timeout */ - maxconnect = vp->lvalue; + ppp_set_max_connect_time(vp->lvalue); break; -#ifdef MAXOCTETS + case PW_FILTER_ID: + /* packet filter, will be handled via ip-(up|down) script */ + ppp_script_setenv("RADIUS_FILTER_ID", (char*) vp->strvalue, 1); + break; + case PW_FRAMED_ROUTE: + /* route, will be handled via ip-(up|down) script */ + ppp_script_setenv("RADIUS_FRAMED_ROUTE", (char*) vp->strvalue, 1); + break; + case PW_IDLE_TIMEOUT: + /* idle parameter */ + ppp_set_max_idle_time(vp->lvalue); + break; case PW_SESSION_OCTETS_LIMIT: /* Session traffic limit */ - maxoctets = vp->lvalue; + ppp_set_session_limit(vp->lvalue); break; case PW_OCTETS_DIRECTION: /* Session traffic limit direction check */ - maxoctets_dir = ( vp->lvalue > 4 ) ? 0 : vp->lvalue ; + ppp_set_session_limit_dir(vp->lvalue); break; -#endif case PW_ACCT_INTERIM_INTERVAL: /* Send accounting updates every few seconds */ rstate.acct_interim_interval = vp->lvalue; @@ -583,7 +635,7 @@ radius_setparams(chap_state *cstate, VALUE_PAIR *vp, char *msg, } else if (remote != 0xfffffffe) { /* 0xfffffffe means NAS should select an ip address */ remote = htonl(vp->lvalue); - if (bad_ip_adrs (remote)) { + if (ppp_bad_ip_addr (remote)) { slprintf(msg, BUF_LEN, "RADIUS: bad remote IP address %I for %s", remote, rstate.user); return -1; @@ -592,37 +644,44 @@ radius_setparams(chap_state *cstate, VALUE_PAIR *vp, char *msg, 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) { + // if (vp->lvalue <= MAXCLASSLEN) { // <- Attribute could be this big, but vp->strvalue is limited to AUTH_STRING_LEN characters + if (vp->lvalue <= AUTH_STRING_LEN) { 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: + ppp_set_mtu(rstate.client_port,MIN(ppp_get_mtu(rstate.client_port),vp->lvalue)); + break; } -#ifdef CHAPMS } else if (vp->vendorcode == VENDOR_MICROSOFT) { +#ifdef PPP_WITH_CHAPMS switch (vp->attribute) { case PW_MS_CHAP2_SUCCESS: - if ((vp->lvalue != 43) || strncmp(vp->strvalue + 1, "S=", 2)) { + if ((vp->lvalue != 43) || strncmp((char*) vp->strvalue + 1, "S=", 2)) { slprintf(msg,BUF_LEN,"RADIUS: bad MS-CHAP2-Success packet"); return -1; } - memcpy(cstate->saresponse, vp->strvalue + 3, - MS_AUTH_RESPONSE_LENGTH); - cstate->saresponse[MS_AUTH_RESPONSE_LENGTH] = '\0'; + if (message != NULL) + strlcpy(message, (char*) vp->strvalue + 1, message_space); ms_chap2_success = 1; break; -#ifdef MPPE +#ifdef PPP_WITH_MPPE case PW_MS_CHAP_MPPE_KEYS: - if (radius_setmppekeys(vp, req_info, cstate) < 0) { + if (radius_setmppekeys(vp, req_info, challenge) < 0) { slprintf(msg, BUF_LEN, "RADIUS: bad MS-CHAP-MPPE-Keys attribute"); return -1; } + mppe_enc_keys = 1; break; case PW_MS_MPPE_SEND_KEY: @@ -634,37 +693,77 @@ radius_setparams(chap_state *cstate, VALUE_PAIR *vp, char *msg, "Send": "Recv"); return -1; } + mppe_enc_keys = 1; break; -#endif /* MPPE */ -#if 0 + 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 +#endif /* MSDNS */ } -#endif /* CHAPMS */ +#endif /* PPP_WITH_CHAPMS */ } vp = vp->next; } /* Require a valid MS-CHAP2-SUCCESS for MS-CHAPv2 auth */ - if (cstate && (cstate->chal_type == CHAP_MICROSOFT_V2) && !ms_chap2_success) + 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 MPPE +#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 -* cstate -- chap_state structure for challenge info * %RETURNS: * >= 0 on success; -1 on failure * %DESCRIPTION: @@ -672,12 +771,16 @@ radius_setparams(chap_state *cstate, VALUE_PAIR *vp, char *msg, * See RFC 2548. ***********************************************************************/ static int -radius_setmppekeys(VALUE_PAIR *vp, REQUEST_INFO *req_info, chap_state *cstate) +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]; + int status = 0; + PPP_MD_CTX *ctx; + unsigned char plain[32]; + unsigned char buf[MD5_DIGEST_LENGTH]; + unsigned int buflen; + if (vp->lvalue != 32) { error("RADIUS: Incorrect attribute length (%d) for MS-CHAP-MPPE-Keys", @@ -687,31 +790,70 @@ radius_setmppekeys(VALUE_PAIR *vp, REQUEST_INFO *req_info, chap_state *cstate) memcpy(plain, vp->strvalue, sizeof(plain)); - MD5Init(&Context); - MD5Update(&Context, req_info->secret, strlen(req_info->secret)); - MD5Update(&Context, req_info->request_vector, AUTH_VECTOR_LEN); - MD5Final(buf, &Context); + ctx = PPP_MD_CTX_new(); + if (ctx) { - for (i = 0; i < 16; i++) - plain[i] ^= buf[i]; + if (PPP_DigestInit(ctx, PPP_md5())) { - MD5Init(&Context); - MD5Update(&Context, req_info->secret, strlen(req_info->secret)); - MD5Update(&Context, vp->strvalue, 16); - MD5Final(buf, &Context); + if (PPP_DigestUpdate(ctx, req_info->secret, strlen(req_info->secret))) { - for(i = 0; i < 16; i++) - plain[i + 16] ^= buf[i]; + if (PPP_DigestUpdate(ctx, req_info->request_vector, AUTH_VECTOR_LEN)) { - /* - * 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_keys(cstate->challenge, &plain[8]); - mppe_keys_set = 1; + buflen = sizeof(buf); + if (PPP_DigestFinal(ctx, buf, &buflen)) { + + status = 1; + } + } + } + } + PPP_MD_CTX_free(ctx); + } + + if (status) { + + for (i = 0; i < MD5_DIGEST_LENGTH; i++) { + plain[i] ^= buf[i]; + } + + status = 0; + ctx = PPP_MD_CTX_new(); + if (ctx) { + + if (PPP_DigestInit(ctx, PPP_md5())) { + + if (PPP_DigestUpdate(ctx, req_info->secret, strlen(req_info->secret))) { + + if (PPP_DigestUpdate(ctx, vp->strvalue, 16)) { + + buflen = MD5_DIGEST_LENGTH; + if (PPP_DigestFinal(ctx, buf, &buflen)) { + + status = 1; + } + } + } + } + PPP_MD_CTX_free(ctx); + } + + if (status) { + + for(i = 0; i < MD5_DIGEST_LENGTH; 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; + } + } - return 0; + return -1; } /********************************************************************** @@ -729,11 +871,13 @@ 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_SIGNATURE_SIZE]; + int status = 0; + PPP_MD_CTX *ctx; + unsigned char *salt = vp->strvalue; + unsigned char *crypt = vp->strvalue + 2; + unsigned char plain[32]; + unsigned char buf[MD5_DIGEST_LENGTH]; + unsigned int buflen; char *type = "Send"; if (vp->attribute == PW_MS_MPPE_RECV_KEY) @@ -752,37 +896,78 @@ radius_setmppekeys2(VALUE_PAIR *vp, REQUEST_INFO *req_info) memcpy(plain, crypt, 32); - MD5Init(&Context); - MD5Update(&Context, req_info->secret, strlen(req_info->secret)); - MD5Update(&Context, req_info->request_vector, AUTH_VECTOR_LEN); - MD5Update(&Context, salt, 2); - MD5Final(buf, &Context); + ctx = PPP_MD_CTX_new(); + if (!ctx) { + error("RADIUS: Error creating PPP_MD_CTX for MS-MPPE-%s-Key attribute", type); + return -1; + } + + buflen = sizeof(buf); + if (!PPP_DigestInit(ctx, PPP_md5())) { + error("RADIUS: Error setting hash algorithm to MD5 for MS-MPPE-%s-Key attribute", type); + } else if (!PPP_DigestUpdate(ctx, req_info->secret, strlen(req_info->secret))) { + error("RADIUS: Error mixing in radius secret for MS-MPPE-%s-Key attribute", type); + } else if (!PPP_DigestUpdate(ctx, req_info->request_vector, AUTH_VECTOR_LEN)) { + error("RADIUS: Error mixing in request vector for MS-MPPE-%s-Key attribute", type); + } else if (!PPP_DigestUpdate(ctx, salt, 2)) { + error("RADIUS: Error mixing in salt for MS-MPPE-%s-Key attribute", type); + } else if (!PPP_DigestFinal(ctx, buf, &buflen)) { + error("RADIUS: Error finalizing key buffer for MS-MPPE-%s-Key attribute", type); + } else { + status = 1; + } + + PPP_MD_CTX_free(ctx); - for (i = 0; i < 16; i++) + if (!status) + return -1; + + for (i = 0; i < 16; i++) { plain[i] ^= buf[i]; + } - if (plain[0] != sizeof(mppe_send_key) /* 16 */) { + if (plain[0] != 16) { error("RADIUS: Incorrect key length (%d) for MS-MPPE-%s-Key attribute", - (int) plain[0], type); + (int) plain[0], type); return -1; } - MD5Init(&Context); - MD5Update(&Context, req_info->secret, strlen(req_info->secret)); - MD5Update(&Context, crypt, 16); - MD5Final(buf, &Context); + status = 0; + ctx = PPP_MD_CTX_new(); + if (!ctx) { + error("RADIUS: Error creating PPP_MD_CTX for MS-MPPE-%s-Key(2) attribute", type); + return -1; + } - plain[16] ^= buf[0]; /* only need the first byte */ + buflen = sizeof(buf); - if (vp->attribute == PW_MS_MPPE_SEND_KEY) - memcpy(mppe_send_key, plain + 1, 16); - else - memcpy(mppe_recv_key, plain + 1, 16); - mppe_keys_set = 1; + if (!PPP_DigestInit(ctx, PPP_md5())) { + error("RADIUS: Error setting hash algorithm to MD5 for MS-MPPE-%s-Key(2) attribute", type); + } else if (!PPP_DigestUpdate(ctx, req_info->secret, strlen(req_info->secret))) { + error("RADIUS: Error mixing in radius secret for MS-MPPE-%s-Key(2) attribute", type); + } else if (!PPP_DigestUpdate(ctx, crypt, 16)) { + error("RADIUS: Error mixing in crypt vector for MS-MPPE-%s-Key(2) attribute", type); + } else if (!PPP_DigestFinal(ctx, buf, &buflen)) { + error("RADIUS: Error finalizing key buffer for MS-MPPE-%s-Key(2) attribute", type); + } else { + status = 1; + } + + PPP_MD_CTX_free(ctx); + + if (!status) + return -1; + 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 /* MPPE */ +#endif /* PPP_WITH_MPPE */ /********************************************************************** * %FUNCTION: radius_acct_start @@ -801,6 +986,8 @@ radius_acct_start(void) VALUE_PAIR *send = NULL; ipcp_options *ho = &ipcp_hisoptions[0]; u_int32_t hisaddr; + const char *remote_number; + const char *ipparam; if (!rstate.initialized) { return; @@ -808,7 +995,7 @@ radius_acct_start(void) 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); @@ -828,16 +1015,19 @@ radius_acct_start(void) av_type = PW_PPP; rc_avpair_add(&send, PW_FRAMED_PROTOCOL, &av_type, 0, VENDOR_NONE); - if (*remote_number) { + remote_number = ppp_get_remote_number(); + ipparam = ppp_ipparam(); + 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 = ( ppp_using_pty() ? PW_VIRTUAL : ( ppp_sync_serial() ? PW_SYNC : PW_ASYNC ) ); rc_avpair_add(&send, PW_NAS_PORT_TYPE, &av_type, 0, VENDOR_NONE); hisaddr = ho->hisaddr; @@ -861,12 +1051,11 @@ radius_acct_start(void) /* 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); - } + } + + /* Kick off periodic accounting reports */ + if (rstate.acct_interim_interval) { + ppp_timeout(radius_acct_interim, NULL, rstate.acct_interim_interval, 0); } } @@ -887,21 +1076,26 @@ radius_acct_stop(void) ipcp_options *ho = &ipcp_hisoptions[0]; u_int32_t hisaddr; int result; + const char *remote_number; + const char *ipparam; + ppp_link_stats_st stats; if (!rstate.initialized) { return; } - if (!rstate.accounting_started) { - return; - } + if (rstate.acct_interim_interval) + ppp_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); @@ -914,32 +1108,97 @@ radius_acct_stop(void) av_type = PW_RADIUS; rc_avpair_add(&send, PW_ACCT_AUTHENTIC, &av_type, 0, VENDOR_NONE); + if (ppp_get_link_stats(&stats)) { - if (link_stats_valid) { - av_type = link_connect_time; + av_type = ppp_get_link_uptime(); rc_avpair_add(&send, PW_ACCT_SESSION_TIME, &av_type, 0, VENDOR_NONE); - av_type = link_stats.bytes_out; + av_type = stats.bytes_out & 0xFFFFFFFF; rc_avpair_add(&send, PW_ACCT_OUTPUT_OCTETS, &av_type, 0, VENDOR_NONE); - av_type = link_stats.bytes_in; + if (stats.bytes_out > 0xFFFFFFFF) { + av_type = stats.bytes_out >> 32; + rc_avpair_add(&send, PW_ACCT_OUTPUT_GIGAWORDS, &av_type, 0, VENDOR_NONE); + } + + av_type = stats.bytes_in & 0xFFFFFFFF; rc_avpair_add(&send, PW_ACCT_INPUT_OCTETS, &av_type, 0, VENDOR_NONE); - av_type = link_stats.pkts_out; + if (stats.bytes_in > 0xFFFFFFFF) { + av_type = stats.bytes_in >> 32; + rc_avpair_add(&send, PW_ACCT_INPUT_GIGAWORDS, &av_type, 0, VENDOR_NONE); + } + + av_type = stats.pkts_out; rc_avpair_add(&send, PW_ACCT_OUTPUT_PACKETS, &av_type, 0, VENDOR_NONE); - av_type = link_stats.pkts_in; + av_type = stats.pkts_in; rc_avpair_add(&send, PW_ACCT_INPUT_PACKETS, &av_type, 0, VENDOR_NONE); } - if (*remote_number) { + remote_number = ppp_get_remote_number(); + ipparam = ppp_ipparam(); + 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 = ( ppp_using_pty() ? PW_VIRTUAL : ( ppp_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( ppp_status() ) { + case EXIT_OK: + av_type = PW_USER_REQUEST; + break; + + case EXIT_USER_REQUEST: + av_type = PW_ADMIN_RESET; + 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; + + case EXIT_TRAFFIC_LIMIT: + av_type = PW_NAS_REQUEST; + break; + + 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); @@ -980,20 +1239,23 @@ radius_acct_interim(void *ignored) ipcp_options *ho = &ipcp_hisoptions[0]; u_int32_t hisaddr; int result; + const char *remote_number; + const char *ipparam; + ppp_link_stats_st stats; if (!rstate.initialized) { return; } - if (!rstate.accounting_started) { - 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); @@ -1006,34 +1268,43 @@ radius_acct_interim(void *ignored) av_type = PW_RADIUS; rc_avpair_add(&send, PW_ACCT_AUTHENTIC, &av_type, 0, VENDOR_NONE); - /* Update link stats */ - update_link_stats(0); + if (ppp_get_link_stats(&stats)) { - if (link_stats_valid) { - link_stats_valid = 0; /* Force later code to update */ - - av_type = link_connect_time; + av_type = ppp_get_link_uptime(); rc_avpair_add(&send, PW_ACCT_SESSION_TIME, &av_type, 0, VENDOR_NONE); - av_type = link_stats.bytes_out; + av_type = stats.bytes_out & 0xFFFFFFFF; rc_avpair_add(&send, PW_ACCT_OUTPUT_OCTETS, &av_type, 0, VENDOR_NONE); - av_type = link_stats.bytes_in; + if (stats.bytes_out > 0xFFFFFFFF) { + av_type = stats.bytes_out >> 32; + rc_avpair_add(&send, PW_ACCT_OUTPUT_GIGAWORDS, &av_type, 0, VENDOR_NONE); + } + + av_type = stats.bytes_in & 0xFFFFFFFF; rc_avpair_add(&send, PW_ACCT_INPUT_OCTETS, &av_type, 0, VENDOR_NONE); - av_type = link_stats.pkts_out; + if (stats.bytes_in > 0xFFFFFFFF) { + av_type = stats.bytes_in >> 32; + rc_avpair_add(&send, PW_ACCT_INPUT_GIGAWORDS, &av_type, 0, VENDOR_NONE); + } + + av_type = stats.pkts_out; rc_avpair_add(&send, PW_ACCT_OUTPUT_PACKETS, &av_type, 0, VENDOR_NONE); - av_type = link_stats.pkts_in; + av_type = stats.pkts_in; rc_avpair_add(&send, PW_ACCT_INPUT_PACKETS, &av_type, 0, VENDOR_NONE); } - if (*remote_number) { + remote_number = ppp_get_remote_number(); + ipparam = ppp_ipparam(); + 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 = ( ppp_using_pty() ? PW_VIRTUAL : ( ppp_sync_serial() ? PW_SYNC : PW_ASYNC ) ); rc_avpair_add(&send, PW_NAS_PORT_TYPE, &av_type, 0, VENDOR_NONE); hisaddr = ho->hisaddr; @@ -1059,7 +1330,7 @@ radius_acct_interim(void *ignored) rc_avpair_free(send); /* Schedule another one */ - TIMEOUT(radius_acct_interim, NULL, rstate.acct_interim_interval); + ppp_timeout(radius_acct_interim, NULL, rstate.acct_interim_interval, 0); } /********************************************************************** @@ -1156,7 +1427,7 @@ radius_init(char *msg) * Extracts the port number from the interface name ***********************************************************************/ static int -get_client_port(char *ifname) +get_client_port(const char *ifname) { int port; if (sscanf(ifname, "ppp%d", &port) == 1) {