X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/ed90ea49e025e0c8083f9d98768d870e6a880f13..27329d23aaad449c60072a3f00ec961195abdbc9:/radius.c diff --git a/radius.c b/radius.c index 2a2db48..6746d81 100644 --- a/radius.c +++ b/radius.c @@ -1,5 +1,6 @@ // L2TPNS Radius Stuff -// $Id: radius.c,v 1.4 2004/06/23 03:52:24 fred_nerk Exp $ + +char const *cvs_id_radius = "$Id: radius.c,v 1.12 2004/11/16 07:54:32 bodea Exp $"; #include #include @@ -24,7 +25,7 @@ extern u32 sessionid; extern struct configt *config; extern int *radfds; -const char *radius_state(int state) +static const char *radius_state(int state) { static char *tmp = NULL; int i; @@ -40,12 +41,12 @@ const char *radius_state(int state) void initrad(void) { int i; - log(3, 0, 0, 0, "Creating %d sockets for RADIUS queries\n", config->num_radfds); + LOG(3, 0, 0, 0, "Creating %d sockets for RADIUS queries\n", config->num_radfds); radfds = calloc(sizeof(int), config->num_radfds); for (i = 0; i < config->num_radfds; i++) { int flags; - if (!radfds[i]) radfds[i] = socket(AF_INET, SOCK_DGRAM, UDP); + radfds[i] = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); flags = fcntl(radfds[i], F_GETFL, 0); fcntl(radfds[i], F_SETFL, flags | O_NONBLOCK); } @@ -57,46 +58,53 @@ void radiusclear(u16 r, sessionidt s) memset(&radius[r], 0, sizeof(radius[r])); // radius[r].state = RADIUSNULL; } -int next_radius_id = 1; -static u16 new_radius() +static u16 get_free_radius() { - u16 i; - int loops = 0; - for (i = next_radius_id; ; i = (i + 1) % MAXRADIUS) + int count; + static u32 next_radius_id = 0; + + for (count = MAXRADIUS; count > 0 ; --count) { - if (radius[i].state == RADIUSNULL) - { - next_radius_id = (next_radius_id + 1) % MAXRADIUS; - return i; - } - if (next_radius_id == i) + ++next_radius_id; // Find the next ID to check. + if (next_radius_id >= MAXRADIUS) + next_radius_id = 1; + + if (radius[next_radius_id].state == RADIUSNULL) { - if (++loops == 2) - { - log(0, 0, 0, 0, "Can't find a free radius session! This is very bad!\n"); - return 0; - } + return next_radius_id; } } + + LOG(0, 0, 0, 0, "Can't find a free radius session! This is very bad!\n"); + return 0; } u16 radiusnew(sessionidt s) { - u16 r; - if (!(r = new_radius())) + u16 r = session[s].radius; + + /* re-use */ + if (r) + { + LOG(3, 0, s, session[s].tunnel, "Re-used radius %d\n", r); + return r; + } + + if (!(r = get_free_radius())) { - log(1, 0, s, session[s].tunnel, "No free RADIUS sessions\n"); + LOG(1, 0, s, session[s].tunnel, "No free RADIUS sessions\n"); STAT(radius_overflow); return 0; }; + memset(&radius[r], 0, sizeof(radius[r])); session[s].radius = r; radius[r].session = s; radius[r].state = RADIUSWAIT; - radius[r].retry = config->current_time + 1200; // Wait at least 120 seconds to re-claim this. + radius[r].retry = TIME + 1200; // Wait at least 120 seconds to re-claim this. - log(3,0,s, session[s].tunnel, "Allocated radius %d\n", r); + LOG(3,0,s, session[s].tunnel, "Allocated radius %d\n", r); return r; } @@ -109,18 +117,18 @@ void radiussend(u16 r, u8 state) int pl; u8 *p; sessionidt s; -#ifdef STAT_CALLS - STAT(call_radiussend); -#endif + + CSTAT(call_radiussend); + s = radius[r].session; if (!config->numradiusservers) { - log(0, 0, s, session[s].tunnel, "No RADIUS servers\n"); + LOG(0, 0, s, session[s].tunnel, "No RADIUS servers\n"); return; } if (!*config->radiussecret) { - log(0, 0, s, session[s].tunnel, "No RADIUS secret\n"); + LOG(0, 0, s, session[s].tunnel, "No RADIUS secret\n"); return; } @@ -135,7 +143,7 @@ void radiussend(u16 r, u8 state) radius[r].try = 0; radius[r].state = state; radius[r].retry = backoff(radius[r].try++); - log(4, 0, s, session[s].tunnel, "Send RADIUS id %d sock %d state %s try %d\n", + LOG(4, 0, s, session[s].tunnel, "Send RADIUS id %d sock %d state %s try %d\n", r >> RADIUS_SHIFT, r & RADIUS_MASK, radius_state(radius[r].state), radius[r].try); if (radius[r].try > config->numradiusservers * 2) @@ -146,7 +154,7 @@ void radiussend(u16 r, u8 state) sessionshutdown(s, "RADIUS timeout"); else { - log(1, 0, s, session[s].tunnel, "RADIUS timeout, but in state %s so don't timeout session\n", + LOG(1, 0, s, session[s].tunnel, "RADIUS timeout, but in state %s so don't timeout session\n", radius_states[state]); radiusclear(r, s); } @@ -171,7 +179,7 @@ void radiussend(u16 r, u8 state) b[0] = 4; // accounting request break; default: - log(0, 0, 0, 0, "Unknown radius state %d\n", state); + LOG(0, 0, 0, 0, "Unknown radius state %d\n", state); } b[1] = r >> RADIUS_SHIFT; // identifier memcpy(b + 4, radius[r].auth, 16); @@ -337,9 +345,16 @@ void radiussend(u16 r, u8 state) memset(&addr, 0, sizeof(addr)); addr.sin_family = AF_INET; *(u32 *) & addr.sin_addr = config->radiusserver[(radius[r].try - 1) % config->numradiusservers]; - addr.sin_port = htons((state == RADIUSAUTH) ? RADPORT : RADAPORT); + { + // get radius port + u16 port = config->radiusport[(radius[r].try - 1) % config->numradiusservers]; + // no need to define the accounting port for itself: + // the accounting port is as far as I know always one more + // than the auth port JK 20040713 + addr.sin_port = htons((state == RADIUSAUTH) ? port : port+1); + } - log_hex(5, "RADIUS Send", b, (p - b)); + LOG_HEX(5, "RADIUS Send", b, (p - b)); sendto(radfds[r & RADIUS_MASK], b, p - b, 0, (void *) &addr, sizeof(addr)); } @@ -359,28 +374,28 @@ void processrad(u8 *buf, int len, char socket_index) r_code = buf[0]; // First byte in radius packet. r_id = buf[1]; // radius reply indentifier. -#ifdef STAT_CALLS - STAT(call_processrad); -#endif - log_hex(5, "RADIUS Response", buf, len); + + CSTAT(call_processrad); + + LOG_HEX(5, "RADIUS Response", buf, len); if (len < 20 || len < ntohs(*(u16 *) (buf + 2))) { - log(1, 0, 0, 0, "Duff RADIUS response length %d\n", len); + LOG(1, 0, 0, 0, "Duff RADIUS response length %d\n", len); return ; } len = ntohs(*(u16 *) (buf + 2)); r = socket_index | (r_id << RADIUS_SHIFT); s = radius[r].session; - log(3, 0, s, session[s].tunnel, "Received %s, radius %d response for session %u (code %d, id %d)\n", + LOG(3, 0, s, session[s].tunnel, "Received %s, radius %d response for session %u (code %d, id %d)\n", radius_states[radius[r].state], r, s, r_code, r_id); if (!s && radius[r].state != RADIUSSTOP) { - log(1, 0, s, session[s].tunnel, " Unexpected RADIUS response\n"); + LOG(1, 0, s, session[s].tunnel, " Unexpected RADIUS response\n"); return; } if (radius[r].state != RADIUSAUTH && radius[r].state != RADIUSSTART && radius[r].state != RADIUSSTOP) { - log(1, 0, s, session[s].tunnel, " Unexpected RADIUS response\n"); + LOG(1, 0, s, session[s].tunnel, " Unexpected RADIUS response\n"); return; } t = session[s].tunnel; @@ -393,25 +408,19 @@ void processrad(u8 *buf, int len, char socket_index) do { if (memcmp(hash, buf + 4, 16)) { - log(0, 0, s, session[s].tunnel, " Incorrect auth on RADIUS response!! (wrong secret in radius config?)\n"); -// radius[r].state = RADIUSWAIT; - + LOG(0, 0, s, session[s].tunnel, " Incorrect auth on RADIUS response!! (wrong secret in radius config?)\n"); return; // Do nothing. On timeout, it will try the next radius server. } if ((radius[r].state == RADIUSAUTH && *buf != 2 && *buf != 3) || ((radius[r].state == RADIUSSTART || radius[r].state == RADIUSSTOP) && *buf != 5)) { - log(1, 0, s, session[s].tunnel, " Unexpected RADIUS response %d\n", *buf); - + LOG(1, 0, s, session[s].tunnel, " Unexpected RADIUS response %d\n", *buf); return; // We got something we didn't expect. Let the timeouts take // care off finishing the radius session if that's really correct. -// old code. I think incorrect. --mo -// radius[r].state = RADIUSWAIT; -// break; // Finish the radius sesssion. } if (radius[r].state == RADIUSAUTH) { - log(4, 0, s, session[s].tunnel, " Original response is \"%s\"\n", (*buf == 2) ? "accept" : "reject"); + LOG(4, 0, s, session[s].tunnel, " Original response is \"%s\"\n", (*buf == 2) ? "accept" : "reject"); // process auth response if (radius[r].chap) { @@ -426,7 +435,7 @@ void processrad(u8 *buf, int len, char socket_index) *buf = packet.auth_allowed ? 2 : 3; } - log(3, 0, s, session[s].tunnel, " CHAP User %s authentication %s.\n", session[s].user, + LOG(3, 0, s, session[s].tunnel, " CHAP User %s authentication %s.\n", session[s].user, (*buf == 2) ? "allowed" : "denied"); *p = (*buf == 2) ? 3 : 4; // ack/nak p[1] = radius[r].id; @@ -446,7 +455,7 @@ void processrad(u8 *buf, int len, char socket_index) *buf = packet.auth_allowed ? 2 : 3; } - log(3, 0, s, session[s].tunnel, " PAP User %s authentication %s.\n", session[s].user, + LOG(3, 0, s, session[s].tunnel, " PAP User %s authentication %s.\n", session[s].user, (*buf == 2) ? "allowed" : "denied"); // ack/nak *p = *buf; @@ -467,20 +476,20 @@ void processrad(u8 *buf, int len, char socket_index) if (*p == 8) { // Statically assigned address - log(3, 0, s, session[s].tunnel, " Radius reply contains IP address %s\n", inet_toa(*(u32 *) (p + 2))); + LOG(3, 0, s, session[s].tunnel, " Radius reply contains IP address %s\n", inet_toa(*(u32 *) (p + 2))); session[s].ip = ntohl(*(u32 *) (p + 2)); session[s].ip_pool_index = -1; } else if (*p == 135) { // DNS address - log(3, 0, s, session[s].tunnel, " Radius reply contains primary DNS address %s\n", inet_toa(*(u32 *) (p + 2))); + LOG(3, 0, s, session[s].tunnel, " Radius reply contains primary DNS address %s\n", inet_toa(*(u32 *) (p + 2))); session[s].dns1 = ntohl(*(u32 *) (p + 2)); } else if (*p == 136) { // DNS address - log(3, 0, s, session[s].tunnel, " Radius reply contains secondary DNS address %s\n", inet_toa(*(u32 *) (p + 2))); + LOG(3, 0, s, session[s].tunnel, " Radius reply contains secondary DNS address %s\n", inet_toa(*(u32 *) (p + 2))); session[s].dns2 = ntohl(*(u32 *) (p + 2)); } else if (*p == 22) @@ -518,14 +527,14 @@ void processrad(u8 *buf, int len, char socket_index) mask = 0xFFFFFF00; if (routes == MAXROUTE) { - log(1, 0, s, session[s].tunnel, " Too many routes\n"); + LOG(1, 0, s, session[s].tunnel, " Too many routes\n"); } else if (ip) { char *ips, *masks; ips = strdup(inet_toa(htonl(ip))); masks = strdup(inet_toa(htonl(mask))); - log(3, 0, s, session[s].tunnel, " Radius reply contains route for %s/%s\n", ips, masks); + LOG(3, 0, s, session[s].tunnel, " Radius reply contains route for %s/%s\n", ips, masks); free(ips); free(masks); session[s].route[routes].ip = ip; @@ -539,16 +548,16 @@ void processrad(u8 *buf, int len, char socket_index) int vendor = ntohl(*(int *)(p + 2)); char attrib = *(p + 6); char attrib_length = *(p + 7) - 2; - log(3, 0, s, session[s].tunnel, " Radius reply contains Vendor-Specific. Vendor=%d Attrib=%d Length=%d\n", vendor, attrib, attrib_length); + LOG(3, 0, s, session[s].tunnel, " Radius reply contains Vendor-Specific. Vendor=%d Attrib=%d Length=%d\n", vendor, attrib, attrib_length); if (attrib_length == 0) continue; if (attrib != 1) - log(3, 0, s, session[s].tunnel, " Unknown vendor-specific\n"); + LOG(3, 0, s, session[s].tunnel, " Unknown vendor-specific\n"); else { char *avpair, *value, *key, *newp; avpair = key = calloc(attrib_length + 1, 1); memcpy(avpair, p + 8, attrib_length); - log(3, 0, s, session[s].tunnel, " Cisco-Avpair value: %s\n", avpair); + LOG(3, 0, s, session[s].tunnel, " Cisco-Avpair value: %s\n", avpair); do { value = strchr(key, '='); if (!value) break; @@ -580,7 +589,7 @@ void processrad(u8 *buf, int len, char socket_index) } else if (*buf == 3) { - log(2, 0, s, session[s].tunnel, " Authentication denied for %s\n", session[s].user); + LOG(2, 0, s, session[s].tunnel, " Authentication denied for %s\n", session[s].user); //FIXME: We should tear down the session here! break; } @@ -588,22 +597,22 @@ void processrad(u8 *buf, int len, char socket_index) if (!session[s].dns1 && config->default_dns1) { session[s].dns1 = htonl(config->default_dns1); - log(3, 0, s, t, " Sending dns1 = %s\n", inet_toa(config->default_dns1)); + LOG(3, 0, s, t, " Sending dns1 = %s\n", inet_toa(config->default_dns1)); } if (!session[s].dns2 && config->default_dns2) { session[s].dns2 = htonl(config->default_dns2); - log(3, 0, s, t, " Sending dns2 = %s\n", inet_toa(config->default_dns2)); + LOG(3, 0, s, t, " Sending dns2 = %s\n", inet_toa(config->default_dns2)); } // Valid Session, set it up - session[s].sid = 0; + session[s].unique_id = 0; sessionsetup(t, s); } else { // An ack for a stop or start record. - log(3, 0, s, t, " RADIUS accounting ack recv in state %s\n", radius_states[radius[r].state]); + LOG(3, 0, s, t, " RADIUS accounting ack recv in state %s\n", radius_states[radius[r].state]); break; } } while (0); @@ -617,9 +626,9 @@ void radiusretry(u16 r) { sessionidt s = radius[r].session; tunnelidt t = 0; -#ifdef STAT_CALLS - STAT(call_radiusretry); -#endif + + CSTAT(call_radiusretry); + if (s) t = session[s].tunnel; radius[r].retry = backoff(radius[r].try + 1); @@ -645,23 +654,7 @@ void radiusretry(u16 r) case RADIUSWAIT: // waiting timeout before available, in case delayed reply from RADIUS server // free up RADIUS task radiusclear(r, s); - log(3, 0, s, session[s].tunnel, "Freeing up radius session %d\n", r); + LOG(3, 0, s, session[s].tunnel, "Freeing up radius session %d\n", r); break; } } - -void radius_clean() -{ - int i; - - log(1, 0, 0, 0, "Cleaning radius session array\n"); - - for (i = 1; i < MAXRADIUS; i++) - { - if (radius[i].retry == 0 - || !session[radius[i].session].opened - || session[radius[i].session].die - || session[radius[i].session].tunnel == 0) - radiusclear(i, 0); - } -}