X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/f3330037865c0bef6e1e63d32d87cfc8c1954eb6..876ad938870ce5066c20acaef32ae5235128b00d:/radius.c?ds=inline diff --git a/radius.c b/radius.c index 0059fcc..60b97a4 100644 --- a/radius.c +++ b/radius.c @@ -1,6 +1,6 @@ // L2TPNS Radius Stuff -char const *cvs_id_radius = "$Id: radius.c,v 1.43 2005/10/11 02:27:40 foonly Exp $"; +char const *cvs_id_radius = "$Id: radius.c,v 1.52 2006/07/01 12:40:17 bodea Exp $"; #include #include @@ -45,6 +45,25 @@ static void calc_auth(const void *buf, size_t len, const uint8_t *in, uint8_t *o void initrad(void) { int i; + uint16_t port = 0; + uint16_t min = config->radius_bind_min; + uint16_t max = config->radius_bind_max; + int inc = 1; + struct sockaddr_in addr; + + if (min) + { + port = min; + if (!max) + max = ~0 - 1; + } + else if (max) /* no minimum specified, bind from max down */ + { + port = max; + min = 1; + inc = -1; + } + LOG(3, 0, 0, "Creating %d sockets for RADIUS queries\n", RADIUS_FDS); radfds = calloc(sizeof(int), RADIUS_FDS); for (i = 0; i < RADIUS_FDS; i++) @@ -53,6 +72,27 @@ void initrad(void) radfds[i] = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); flags = fcntl(radfds[i], F_GETFL, 0); fcntl(radfds[i], F_SETFL, flags | O_NONBLOCK); + + if (port) + { + int b; + + memset(&addr, 0, sizeof(addr)); + addr.sin_family = AF_INET; + addr.sin_addr.s_addr = INADDR_ANY; + + do { + addr.sin_port = htons(port); + if ((b = bind(radfds[i], (struct sockaddr *) &addr, sizeof(addr))) < 0) + { + if ((port += inc) < min || port > max) + { + LOG(0, 0, 0, "Can't bind RADIUS socket in range %u-%u\n", min, max); + exit(1); + } + } + } while (b < 0); + } } } @@ -158,7 +198,7 @@ void radiussend(uint16_t r, uint8_t state) if (s) { if (state == RADIUSAUTH) - sessionshutdown(s, "RADIUS timeout.", 3, 0); + sessionshutdown(s, "RADIUS timeout.", CDN_ADMIN_DISC, TERM_REAUTHENTICATION_FAILURE); else { LOG(1, s, session[s].tunnel, "RADIUS timeout, but in state %s so don't timeout session\n", @@ -248,8 +288,8 @@ void radiussend(uint16_t r, uint8_t state) p += p[1]; } } - else if (state == RADIUSSTART || state == RADIUSSTOP || state == RADIUSINTERIM) - { // accounting + else // accounting + { *p = 40; // accounting type p[1] = 6; *(uint32_t *) (p + 2) = htonl(state - RADIUSSTART + 1); // start=1, stop=2, interim=3 @@ -304,49 +344,116 @@ void radiussend(uint16_t r, uint8_t state) p[1] = 6; *(uint32_t *) (p + 2) = htonl(session[s].cout_wrap); p += p[1]; + + if (state == RADIUSSTOP && radius[r].term_cause) + { + *p = 49; // acct-terminate-cause + p[1] = 6; + *(uint32_t *) (p + 2) = htonl(radius[r].term_cause); + p += p[1]; + + if (radius[r].term_msg) + { + *p = 26; // vendor-specific + *(uint32_t *) (p + 2) = htonl(9); // Cisco + p[6] = 1; // Cisco-AVPair + p[7] = 2 + sprintf((char *) p + 8, "disc-cause-ext=%s", radius[r].term_msg); + p[1] = p[7] + 6; + p += p[1]; + } + } } - if (session[s].snoop_ip && session[s].snoop_port) { - *p = 26; // vendor-specific - *(uint32_t *) (p + 2) = htonl(9); // Cisco - p[6] = 1; // Cisco-AVPair - p[7] = 2 + sprintf((char *) p + 8, "intercept=%s:%d", - fmtaddr(session[s].snoop_ip, 0), session[s].snoop_port); - - p[1] = p[7] + 6; - p += p[1]; + struct param_radius_account acct = { &tunnel[session[s].tunnel], &session[s], &p }; + run_plugins(PLUGIN_RADIUS_ACCOUNT, &acct); } } } + if (s) { - *p = 5; // NAS-Port + *p = 5; // NAS-Port p[1] = 6; *(uint32_t *) (p + 2) = htonl(s); p += p[1]; - } - if (s && session[s].ip) - { - *p = 8; // Framed-IP-Address + + *p = 6; // Service-Type p[1] = 6; - *(uint32_t *) (p + 2) = htonl(session[s].ip); + *(uint32_t *) (p + 2) = htonl(2); // Framed-User p += p[1]; - } - if (*session[s].called) - { - *p = 30; // called - p[1] = strlen(session[s].called) + 2; - strcpy((char *) p + 2, session[s].called); - p += p[1]; - } - if (*session[s].calling) - { - *p = 31; // calling - p[1] = strlen(session[s].calling) + 2; - strcpy((char *) p + 2, session[s].calling); + + *p = 7; // Framed-Protocol + p[1] = 6; + *(uint32_t *) (p + 2) = htonl(1); // PPP p += p[1]; + + if (session[s].ip) + { + *p = 8; // Framed-IP-Address + p[1] = 6; + *(uint32_t *) (p + 2) = htonl(session[s].ip); + p += p[1]; + } + + if (session[s].route[0].ip) + { + int r; + for (r = 0; s && r < MAXROUTE && session[s].route[r].ip; r++) + { + int width = 32; + if (session[s].route[r].mask) + { + int mask = session[s].route[r].mask; + while (!(mask & 1)) + { + width--; + mask >>= 1; + } + } + + *p = 22; // Framed-Route + p[1] = sprintf((char *) p + 2, "%s/%d %s 1", + fmtaddr(htonl(session[s].route[r].ip), 0), + width, fmtaddr(htonl(session[s].ip), 1)) + 2; + + p += p[1]; + } + } + + if (session[s].session_timeout) + { + *p = 27; // Session-Timeout + p[1] = 6; + *(uint32_t *) (p + 2) = htonl(session[s].session_timeout); + p += p[1]; + } + + if (session[s].idle_timeout) + { + *p = 28; // Idle-Timeout + p[1] = 6; + *(uint32_t *) (p + 2) = htonl(session[s].idle_timeout); + p += p[1]; + } + + if (*session[s].called) + { + *p = 30; // called + p[1] = strlen(session[s].called) + 2; + strcpy((char *) p + 2, session[s].called); + p += p[1]; + } + + if (*session[s].calling) + { + *p = 31; // calling + p[1] = strlen(session[s].calling) + 2; + strcpy((char *) p + 2, session[s].calling); + p += p[1]; + } } + // NAS-IP-Address *p = 4; p[1] = 6; @@ -492,7 +599,7 @@ void processrad(uint8_t *buf, int len, char socket_index) if (radius[r].chap) { // CHAP - uint8_t *p = makeppp(b, sizeof(b), 0, 0, s, t, PPPCHAP); + uint8_t *p = makeppp(b, sizeof(b), 0, 0, s, t, PPPCHAP, 0, 0, 0); if (!p) return; // Abort! *p = (r_code == AccessAccept) ? 3 : 4; // ack/nak @@ -506,7 +613,7 @@ void processrad(uint8_t *buf, int len, char socket_index) else { // PAP - uint8_t *p = makeppp(b, sizeof(b), 0, 0, s, t, PPPPAP); + uint8_t *p = makeppp(b, sizeof(b), 0, 0, s, t, PPPPAP, 0, 0, 0); if (!p) return; // Abort! // ack/nak @@ -548,6 +655,19 @@ void processrad(uint8_t *buf, int len, char socket_index) LOG(3, s, session[s].tunnel, " Radius reply contains primary DNS address %s\n", fmtaddr(htonl(session[s].dns1), 0)); } + else if (*p == 27) + { + // Session timeout + if (p[1] < 6) { + LOG(2, s, session[s].tunnel, "Error: Received Session timeout with length %d < 6\n", p[1]); + continue; + } + + session[s].timeout = ntohl(*(uint32_t *) (p + 2)); + LOG(3, s, session[s].tunnel, " Radius reply contains Session timeout %d\n", session[s].timeout); + if (!session[s].timeout) + sessionshutdown(s, "Session timeout is zero", CDN_ADMIN_DISC, TERM_SESSION_TIMEOUT); + } else if (*p == 136) { // DNS address @@ -641,6 +761,28 @@ void processrad(uint8_t *buf, int len, char socket_index) ip_filters[f].used++; } } + else if (*p == 27) + { + // Session-Timeout + uint32_t to = ntohl(*(uint32_t *)(p + 2)); + + LOG(3, s, session[s].tunnel, " Radius reply contains Session-Timeout = %u\n", to); + if (to > 0) + { + session[s].session_timeout = to; + } + } + else if (*p == 28) + { + // Idle-Timeout + uint32_t to = ntohl(*(uint32_t *)(p + 2)); + + LOG(3, s, session[s].tunnel, " Radius reply contains Idle-Timeout = %u\n", to); + if (to > 0) + { + session[s].idle_timeout = to; + } + } else if (*p == 26 && p[1] >= 7) { // Vendor-Specific Attribute @@ -758,7 +900,7 @@ void radiusretry(uint16_t r) extern int daefd; -void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen) +void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen, struct in_addr *local) { int i, r_code, r_id, length, attribute_length; uint8_t *packet, attribute; @@ -967,7 +1109,7 @@ void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen) LOG(3, s, t, " DAE Disconnect %d (%s)\n", s, session[s].user); r_code = DisconnectACK; - sessionshutdown(s, "Requested by PoD", 3, 0); // disconnect session + sessionshutdown(s, "Requested by PoD", CDN_ADMIN_DISC, TERM_ADMIN_RESET); // disconnect session break; case CoARequest: // Change of Authorization @@ -1036,6 +1178,6 @@ void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen) LOG(3, 0, 0, "Sending DAE %s, id=%d\n", radius_code(r_code), r_id); // send DAE response - if (sendto(daefd, buf, len, MSG_DONTWAIT | MSG_NOSIGNAL, (struct sockaddr *) addr, alen) < 0) + if (sendtofrom(daefd, buf, len, MSG_DONTWAIT | MSG_NOSIGNAL, (struct sockaddr *) addr, alen, local) < 0) LOG(0, 0, 0, "Error sending DAE response packet: %s\n", strerror(errno)); }