diff options
Diffstat (limited to 'usr.sbin/ppp/radius.c')
| -rw-r--r-- | usr.sbin/ppp/radius.c | 1361 |
1 files changed, 0 insertions, 1361 deletions
diff --git a/usr.sbin/ppp/radius.c b/usr.sbin/ppp/radius.c deleted file mode 100644 index 6b1d685..0000000 --- a/usr.sbin/ppp/radius.c +++ /dev/null @@ -1,1361 +0,0 @@ -/* - * Copyright 1999 Internet Business Solutions Ltd., Switzerland - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - * - */ - -#include <stdint.h> -#include <sys/param.h> - -#include <sys/select.h> -#include <sys/socket.h> -#include <netinet/in_systm.h> -#include <netinet/in.h> -#include <netinet/ip.h> -#include <arpa/inet.h> -#include <sys/un.h> -#include <net/route.h> - -#ifdef LOCALRAD -#include "radlib.h" -#include "radlib_vs.h" -#else -#include <radlib.h> -#include <radlib_vs.h> -#endif - -#include <errno.h> -#ifndef NODES -#include <md5.h> -#endif -#include <stdarg.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/time.h> -#include <termios.h> -#include <unistd.h> -#include <netdb.h> - -#include "layer.h" -#include "defs.h" -#include "log.h" -#include "descriptor.h" -#include "prompt.h" -#include "timer.h" -#include "fsm.h" -#include "iplist.h" -#include "slcompress.h" -#include "throughput.h" -#include "lqr.h" -#include "hdlc.h" -#include "mbuf.h" -#include "ncpaddr.h" -#include "ip.h" -#include "ipcp.h" -#include "ipv6cp.h" -#include "route.h" -#include "command.h" -#include "filter.h" -#include "lcp.h" -#include "ccp.h" -#include "link.h" -#include "mp.h" -#include "radius.h" -#include "auth.h" -#include "async.h" -#include "physical.h" -#include "chat.h" -#include "cbcp.h" -#include "chap.h" -#include "datalink.h" -#include "ncp.h" -#include "bundle.h" -#include "proto.h" -#include "iface.h" - -#ifndef NODES -struct mschap_response { - u_char ident; - u_char flags; - u_char lm_response[24]; - u_char nt_response[24]; -}; - -struct mschap2_response { - u_char ident; - u_char flags; - u_char pchallenge[16]; - u_char reserved[8]; - u_char response[24]; -}; - -#define AUTH_LEN 16 -#define SALT_LEN 2 -#endif - -static const char * -radius_policyname(int policy) -{ - switch(policy) { - case MPPE_POLICY_ALLOWED: - return "Allowed"; - case MPPE_POLICY_REQUIRED: - return "Required"; - } - return NumStr(policy, NULL, 0); -} - -static const char * -radius_typesname(int types) -{ - switch(types) { - case MPPE_TYPE_40BIT: - return "40 bit"; - case MPPE_TYPE_128BIT: - return "128 bit"; - case MPPE_TYPE_40BIT|MPPE_TYPE_128BIT: - return "40 or 128 bit"; - } - return NumStr(types, NULL, 0); -} - -#ifndef NODES -static void -demangle(struct radius *r, const void *mangled, size_t mlen, - char **buf, size_t *len) -{ - char R[AUTH_LEN]; /* variable names as per rfc2548 */ - const char *S; - u_char b[16]; - const u_char *A, *C; - MD5_CTX Context; - int Slen, i, Clen, Ppos; - u_char *P; - - if (mlen % 16 != SALT_LEN) { - log_Printf(LogWARN, "Cannot interpret mangled data of length %ld\n", - (u_long)mlen); - *buf = NULL; - *len = 0; - return; - } - - /* We need the RADIUS Request-Authenticator */ - if (rad_request_authenticator(r->cx.rad, R, sizeof R) != AUTH_LEN) { - log_Printf(LogWARN, "Cannot obtain the RADIUS request authenticator\n"); - *buf = NULL; - *len = 0; - return; - } - - A = (const u_char *)mangled; /* Salt comes first */ - C = (const u_char *)mangled + SALT_LEN; /* Then the ciphertext */ - Clen = mlen - SALT_LEN; - S = rad_server_secret(r->cx.rad); /* We need the RADIUS secret */ - Slen = strlen(S); - P = alloca(Clen); /* We derive our plaintext */ - - MD5Init(&Context); - MD5Update(&Context, S, Slen); - MD5Update(&Context, R, AUTH_LEN); - MD5Update(&Context, A, SALT_LEN); - MD5Final(b, &Context); - Ppos = 0; - - while (Clen) { - Clen -= 16; - - for (i = 0; i < 16; i++) - P[Ppos++] = C[i] ^ b[i]; - - if (Clen) { - MD5Init(&Context); - MD5Update(&Context, S, Slen); - MD5Update(&Context, C, 16); - MD5Final(b, &Context); - } - - C += 16; - } - - /* - * The resulting plain text consists of a one-byte length, the text and - * maybe some padding. - */ - *len = *P; - if (*len > mlen - 1) { - log_Printf(LogWARN, "Mangled data seems to be garbage\n"); - *buf = NULL; - *len = 0; - return; - } - - if ((*buf = malloc(*len)) == NULL) { - log_Printf(LogWARN, "demangle: Out of memory (%lu bytes)\n", (u_long)*len); - *len = 0; - } else - memcpy(*buf, P + 1, *len); -} -#endif - -/* XXX: This should go into librarius. */ -#ifndef NOINET6 -static uint8_t * -rad_cvt_ipv6prefix(const void *data, size_t len) -{ - const size_t ipv6len = sizeof(struct in6_addr) + 2; - uint8_t *s; - - if (len > ipv6len) - return NULL; - s = malloc(ipv6len); - if (s != NULL) { - memset(s, 0, ipv6len); - memcpy(s, data, len); - } - return s; -} -#endif - -/* - * rad_continue_send_request() has given us `got' (non-zero). Deal with it. - */ -static void -radius_Process(struct radius *r, int got) -{ - char *argv[MAXARGS], *nuke; - struct bundle *bundle; - int argc, addrs, res, width; - size_t len; - struct ncprange dest; - struct ncpaddr gw; - const void *data; - const char *stype; - u_int32_t ipaddr, vendor; - struct in_addr ip; -#ifndef NOINET6 - uint8_t ipv6addr[INET6_ADDRSTRLEN]; - struct in6_addr ip6; -#endif - - r->cx.fd = -1; /* Stop select()ing */ - stype = r->cx.auth ? "auth" : "acct"; - - switch (got) { - case RAD_ACCESS_ACCEPT: - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - "Radius(%s): ACCEPT received\n", stype); - if (!r->cx.auth) { - rad_close(r->cx.rad); - return; - } - break; - - case RAD_ACCESS_REJECT: - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - "Radius(%s): REJECT received\n", stype); - if (!r->cx.auth) { - rad_close(r->cx.rad); - return; - } - break; - - case RAD_ACCESS_CHALLENGE: - /* we can't deal with this (for now) ! */ - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - "Radius: CHALLENGE received (can't handle yet)\n"); - if (r->cx.auth) - auth_Failure(r->cx.auth); - rad_close(r->cx.rad); - return; - - case RAD_ACCOUNTING_RESPONSE: - /* - * It's probably not ideal to log this at PHASE level as we'll see - * too much stuff going to the log when ``set rad_alive'' is used. - * So we differ from older behaviour (ppp version 3.1 and before) - * and just log accounting responses to LogRADIUS. - */ - log_Printf(LogRADIUS, "Radius(%s): Accounting response received\n", - stype); - if (r->cx.auth) - auth_Failure(r->cx.auth); /* unexpected !!! */ - - /* No further processing for accounting requests, please */ - rad_close(r->cx.rad); - return; - - case -1: - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - "radius(%s): %s\n", stype, rad_strerror(r->cx.rad)); - if (r->cx.auth) - auth_Failure(r->cx.auth); - rad_close(r->cx.rad); - return; - - default: - log_Printf(LogERROR, "rad_send_request(%s): Failed %d: %s\n", stype, - got, rad_strerror(r->cx.rad)); - if (r->cx.auth) - auth_Failure(r->cx.auth); - rad_close(r->cx.rad); - return; - } - - /* Let's see what we've got in our reply */ - r->ip.s_addr = r->mask.s_addr = INADDR_NONE; - r->mtu = 0; - r->vj = 0; - while ((res = rad_get_attr(r->cx.rad, &data, &len)) > 0) { - switch (res) { - case RAD_FRAMED_IP_ADDRESS: - r->ip = rad_cvt_addr(data); - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - " IP %s\n", inet_ntoa(r->ip)); - break; - - case RAD_FILTER_ID: - free(r->filterid); - if ((r->filterid = rad_cvt_string(data, len)) == NULL) { - log_Printf(LogERROR, "rad_cvt_string: %s\n", rad_strerror(r->cx.rad)); - auth_Failure(r->cx.auth); - rad_close(r->cx.rad); - return; - } - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - " Filter \"%s\"\n", r->filterid); - break; - - case RAD_SESSION_TIMEOUT: - r->sessiontime = rad_cvt_int(data); - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - " Session-Timeout %lu\n", r->sessiontime); - break; - - case RAD_FRAMED_IP_NETMASK: - r->mask = rad_cvt_addr(data); - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - " Netmask %s\n", inet_ntoa(r->mask)); - break; - - case RAD_FRAMED_MTU: - r->mtu = rad_cvt_int(data); - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - " MTU %lu\n", r->mtu); - break; - - case RAD_FRAMED_ROUTING: - /* Disabled for now - should we automatically set up some filters ? */ - /* rad_cvt_int(data); */ - /* bit 1 = Send routing packets */ - /* bit 2 = Receive routing packets */ - break; - - case RAD_FRAMED_COMPRESSION: - r->vj = rad_cvt_int(data) == 1 ? 1 : 0; - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - " VJ %sabled\n", r->vj ? "en" : "dis"); - break; - - case RAD_FRAMED_ROUTE: - /* - * We expect a string of the format ``dest[/bits] gw [metrics]'' - * Any specified metrics are ignored. MYADDR and HISADDR are - * understood for ``dest'' and ``gw'' and ``0.0.0.0'' is the same - * as ``HISADDR''. - */ - - if ((nuke = rad_cvt_string(data, len)) == NULL) { - log_Printf(LogERROR, "rad_cvt_string: %s\n", rad_strerror(r->cx.rad)); - auth_Failure(r->cx.auth); - rad_close(r->cx.rad); - return; - } - - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - " Route: %s\n", nuke); - bundle = r->cx.auth->physical->dl->bundle; - ip.s_addr = INADDR_ANY; - ncpaddr_setip4(&gw, ip); - ncprange_setip4host(&dest, ip); - argc = command_Interpret(nuke, strlen(nuke), argv); - if (argc < 0) - log_Printf(LogWARN, "radius: %s: Syntax error\n", - argc == 1 ? argv[0] : "\"\""); - else if (argc < 2) - log_Printf(LogWARN, "radius: %s: Invalid route\n", - argc == 1 ? argv[0] : "\"\""); - else if ((strcasecmp(argv[0], "default") != 0 && - !ncprange_aton(&dest, &bundle->ncp, argv[0])) || - !ncpaddr_aton(&gw, &bundle->ncp, argv[1])) - log_Printf(LogWARN, "radius: %s %s: Invalid route\n", - argv[0], argv[1]); - else { - ncprange_getwidth(&dest, &width); - if (width == 32 && strchr(argv[0], '/') == NULL) { - /* No mask specified - use the natural mask */ - ncprange_getip4addr(&dest, &ip); - ncprange_setip4mask(&dest, addr2mask(ip)); - } - addrs = 0; - - if (!strncasecmp(argv[0], "HISADDR", 7)) - addrs = ROUTE_DSTHISADDR; - else if (!strncasecmp(argv[0], "MYADDR", 6)) - addrs = ROUTE_DSTMYADDR; - - if (ncpaddr_getip4addr(&gw, &ipaddr) && ipaddr == INADDR_ANY) { - addrs |= ROUTE_GWHISADDR; - ncpaddr_setip4(&gw, bundle->ncp.ipcp.peer_ip); - } else if (strcasecmp(argv[1], "HISADDR") == 0) - addrs |= ROUTE_GWHISADDR; - - route_Add(&r->routes, addrs, &dest, &gw); - } - free(nuke); - break; - - case RAD_REPLY_MESSAGE: - free(r->repstr); - if ((r->repstr = rad_cvt_string(data, len)) == NULL) { - log_Printf(LogERROR, "rad_cvt_string: %s\n", rad_strerror(r->cx.rad)); - auth_Failure(r->cx.auth); - rad_close(r->cx.rad); - return; - } - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - " Reply-Message \"%s\"\n", r->repstr); - break; - -#ifndef NOINET6 - case RAD_FRAMED_IPV6_PREFIX: - free(r->ipv6prefix); - if ((r->ipv6prefix = rad_cvt_ipv6prefix(data, len)) == NULL) { - log_Printf(LogERROR, "rad_cvt_ipv6prefix: %s\n", - "Malformed attribute in response"); - auth_Failure(r->cx.auth); - rad_close(r->cx.rad); - return; - } - inet_ntop(AF_INET6, &r->ipv6prefix[2], ipv6addr, sizeof(ipv6addr)); - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - " IPv6 %s/%d\n", ipv6addr, r->ipv6prefix[1]); - break; - - case RAD_FRAMED_IPV6_ROUTE: - /* - * We expect a string of the format ``dest[/bits] gw [metrics]'' - * Any specified metrics are ignored. MYADDR6 and HISADDR6 are - * understood for ``dest'' and ``gw'' and ``::'' is the same - * as ``HISADDR6''. - */ - - if ((nuke = rad_cvt_string(data, len)) == NULL) { - log_Printf(LogERROR, "rad_cvt_string: %s\n", rad_strerror(r->cx.rad)); - auth_Failure(r->cx.auth); - rad_close(r->cx.rad); - return; - } - - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - " IPv6 Route: %s\n", nuke); - bundle = r->cx.auth->physical->dl->bundle; - ncpaddr_setip6(&gw, &in6addr_any); - ncprange_set(&dest, &gw, 0); - argc = command_Interpret(nuke, strlen(nuke), argv); - if (argc < 0) - log_Printf(LogWARN, "radius: %s: Syntax error\n", - argc == 1 ? argv[0] : "\"\""); - else if (argc < 2) - log_Printf(LogWARN, "radius: %s: Invalid route\n", - argc == 1 ? argv[0] : "\"\""); - else if ((strcasecmp(argv[0], "default") != 0 && - !ncprange_aton(&dest, &bundle->ncp, argv[0])) || - !ncpaddr_aton(&gw, &bundle->ncp, argv[1])) - log_Printf(LogWARN, "radius: %s %s: Invalid route\n", - argv[0], argv[1]); - else { - addrs = 0; - - if (!strncasecmp(argv[0], "HISADDR6", 8)) - addrs = ROUTE_DSTHISADDR6; - else if (!strncasecmp(argv[0], "MYADDR6", 7)) - addrs = ROUTE_DSTMYADDR6; - - if (ncpaddr_getip6(&gw, &ip6) && IN6_IS_ADDR_UNSPECIFIED(&ip6)) { - addrs |= ROUTE_GWHISADDR6; - ncpaddr_copy(&gw, &bundle->ncp.ipv6cp.hisaddr); - } else if (strcasecmp(argv[1], "HISADDR6") == 0) - addrs |= ROUTE_GWHISADDR6; - - route_Add(&r->ipv6routes, addrs, &dest, &gw); - } - free(nuke); - break; -#endif - - case RAD_VENDOR_SPECIFIC: - if ((res = rad_get_vendor_attr(&vendor, &data, &len)) <= 0) { - log_Printf(LogERROR, "rad_get_vendor_attr: %s (failing!)\n", - rad_strerror(r->cx.rad)); - auth_Failure(r->cx.auth); - rad_close(r->cx.rad); - return; - } - - switch (vendor) { - case RAD_VENDOR_MICROSOFT: - switch (res) { -#ifndef NODES - case RAD_MICROSOFT_MS_CHAP_ERROR: - free(r->errstr); - if (len == 0) - r->errstr = NULL; - else { - if (len < 3 || ((const char *)data)[1] != '=') { - /* - * Only point at the String field if we don't think the - * peer has misformatted the response. - */ - data = (const char *)data + 1; - len--; - } else - log_Printf(LogWARN, "Warning: The MS-CHAP-Error " - "attribute is mis-formatted. Compensating\n"); - if ((r->errstr = rad_cvt_string((const char *)data, - len)) == NULL) { - log_Printf(LogERROR, "rad_cvt_string: %s\n", - rad_strerror(r->cx.rad)); - auth_Failure(r->cx.auth); - rad_close(r->cx.rad); - return; - } - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - " MS-CHAP-Error \"%s\"\n", r->errstr); - } - break; - - case RAD_MICROSOFT_MS_CHAP2_SUCCESS: - free(r->msrepstr); - if (len == 0) - r->msrepstr = NULL; - else { - if (len < 3 || ((const char *)data)[1] != '=') { - /* - * Only point at the String field if we don't think the - * peer has misformatted the response. - */ - data = (const char *)data + 1; - len--; - } else - log_Printf(LogWARN, "Warning: The MS-CHAP2-Success " - "attribute is mis-formatted. Compensating\n"); - if ((r->msrepstr = rad_cvt_string((const char *)data, - len)) == NULL) { - log_Printf(LogERROR, "rad_cvt_string: %s\n", - rad_strerror(r->cx.rad)); - auth_Failure(r->cx.auth); - rad_close(r->cx.rad); - return; - } - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - " MS-CHAP2-Success \"%s\"\n", r->msrepstr); - } - break; - - case RAD_MICROSOFT_MS_MPPE_ENCRYPTION_POLICY: - r->mppe.policy = rad_cvt_int(data); - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - " MS-MPPE-Encryption-Policy %s\n", - radius_policyname(r->mppe.policy)); - break; - - case RAD_MICROSOFT_MS_MPPE_ENCRYPTION_TYPES: - r->mppe.types = rad_cvt_int(data); - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - " MS-MPPE-Encryption-Types %s\n", - radius_typesname(r->mppe.types)); - break; - - case RAD_MICROSOFT_MS_MPPE_RECV_KEY: - free(r->mppe.recvkey); - demangle(r, data, len, &r->mppe.recvkey, &r->mppe.recvkeylen); - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - " MS-MPPE-Recv-Key ********\n"); - break; - - case RAD_MICROSOFT_MS_MPPE_SEND_KEY: - demangle(r, data, len, &r->mppe.sendkey, &r->mppe.sendkeylen); - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - " MS-MPPE-Send-Key ********\n"); - break; -#endif - - default: - log_Printf(LogDEBUG, "Dropping MICROSOFT vendor specific " - "RADIUS attribute %d\n", res); - break; - } - break; - - default: - log_Printf(LogDEBUG, "Dropping vendor %lu RADIUS attribute %d\n", - (unsigned long)vendor, res); - break; - } - break; - - default: - log_Printf(LogDEBUG, "Dropping RADIUS attribute %d\n", res); - break; - } - } - - if (res == -1) { - log_Printf(LogERROR, "rad_get_attr: %s (failing!)\n", - rad_strerror(r->cx.rad)); - auth_Failure(r->cx.auth); - } else if (got == RAD_ACCESS_REJECT) - auth_Failure(r->cx.auth); - else { - r->valid = 1; - auth_Success(r->cx.auth); - } - rad_close(r->cx.rad); -} - -/* - * We've either timed out or select()ed on the read descriptor - */ -static void -radius_Continue(struct radius *r, int sel) -{ - struct timeval tv; - int got; - - timer_Stop(&r->cx.timer); - if ((got = rad_continue_send_request(r->cx.rad, sel, &r->cx.fd, &tv)) == 0) { - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - "Radius: Request re-sent\n"); - r->cx.timer.load = tv.tv_usec / TICKUNIT + tv.tv_sec * SECTICKS; - timer_Start(&r->cx.timer); - return; - } - - radius_Process(r, got); -} - -/* - * Time to call rad_continue_send_request() - timed out. - */ -static void -radius_Timeout(void *v) -{ - radius_Continue((struct radius *)v, 0); -} - -/* - * Time to call rad_continue_send_request() - something to read. - */ -static void -radius_Read(struct fdescriptor *d, struct bundle *bundle __unused, - const fd_set *fdset __unused) -{ - radius_Continue(descriptor2radius(d), 1); -} - -/* - * Flush any pending transactions - */ -void -radius_Flush(struct radius *r) -{ - struct timeval tv; - fd_set s; - - while (r->cx.fd != -1) { - FD_ZERO(&s); - FD_SET(r->cx.fd, &s); - tv.tv_sec = 0; - tv.tv_usec = TICKUNIT; - select(r->cx.fd + 1, &s, NULL, NULL, &tv); - radius_Continue(r, 1); - } -} - -/* - * Behave as a struct fdescriptor (descriptor.h) - */ -static int -radius_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w __unused, - fd_set *e __unused, int *n) -{ - struct radius *rad = descriptor2radius(d); - - if (r && rad->cx.fd != -1) { - FD_SET(rad->cx.fd, r); - if (*n < rad->cx.fd + 1) - *n = rad->cx.fd + 1; - log_Printf(LogTIMER, "Radius: fdset(r) %d\n", rad->cx.fd); - return 1; - } - - return 0; -} - -/* - * Behave as a struct fdescriptor (descriptor.h) - */ -static int -radius_IsSet(struct fdescriptor *d, const fd_set *fdset) -{ - struct radius *r = descriptor2radius(d); - - return r && r->cx.fd != -1 && FD_ISSET(r->cx.fd, fdset); -} - -/* - * Behave as a struct fdescriptor (descriptor.h) - */ -static int -radius_Write(struct fdescriptor *d __unused, struct bundle *bundle __unused, - const fd_set *fdset __unused) -{ - /* We never want to write here ! */ - log_Printf(LogALERT, "radius_Write: Internal error: Bad call !\n"); - return 0; -} - -/* - * Initialise ourselves - */ -void -radius_Init(struct radius *r) -{ - r->desc.type = RADIUS_DESCRIPTOR; - r->desc.UpdateSet = radius_UpdateSet; - r->desc.IsSet = radius_IsSet; - r->desc.Read = radius_Read; - r->desc.Write = radius_Write; - r->cx.fd = -1; - r->cx.rad = NULL; - memset(&r->cx.timer, '\0', sizeof r->cx.timer); - r->cx.auth = NULL; - r->valid = 0; - r->vj = 0; - r->ip.s_addr = INADDR_ANY; - r->mask.s_addr = INADDR_NONE; - r->routes = NULL; - r->mtu = DEF_MTU; - r->msrepstr = NULL; - r->repstr = NULL; -#ifndef NOINET6 - r->ipv6prefix = NULL; - r->ipv6routes = NULL; -#endif - r->errstr = NULL; - r->mppe.policy = 0; - r->mppe.types = 0; - r->mppe.recvkey = NULL; - r->mppe.recvkeylen = 0; - r->mppe.sendkey = NULL; - r->mppe.sendkeylen = 0; - *r->cfg.file = '\0';; - log_Printf(LogDEBUG, "Radius: radius_Init\n"); -} - -/* - * Forget everything and go back to initialised state. - */ -void -radius_Destroy(struct radius *r) -{ - r->valid = 0; - log_Printf(LogDEBUG, "Radius: radius_Destroy\n"); - timer_Stop(&r->cx.timer); - route_DeleteAll(&r->routes); -#ifndef NOINET6 - route_DeleteAll(&r->ipv6routes); -#endif - free(r->filterid); - r->filterid = NULL; - free(r->msrepstr); - r->msrepstr = NULL; - free(r->repstr); - r->repstr = NULL; -#ifndef NOINET6 - free(r->ipv6prefix); - r->ipv6prefix = NULL; -#endif - free(r->errstr); - r->errstr = NULL; - free(r->mppe.recvkey); - r->mppe.recvkey = NULL; - r->mppe.recvkeylen = 0; - free(r->mppe.sendkey); - r->mppe.sendkey = NULL; - r->mppe.sendkeylen = 0; - if (r->cx.fd != -1) { - r->cx.fd = -1; - rad_close(r->cx.rad); - } -} - -static int -radius_put_physical_details(struct radius *rad, struct physical *p) -{ - int slot, type; - - type = RAD_VIRTUAL; - if (p->handler) - switch (p->handler->type) { - case I4B_DEVICE: - type = RAD_ISDN_SYNC; - break; - - case TTY_DEVICE: - type = RAD_ASYNC; - break; - - case ETHER_DEVICE: - type = RAD_ETHERNET; - break; - - case TCP_DEVICE: - case UDP_DEVICE: - case EXEC_DEVICE: - case ATM_DEVICE: - case NG_DEVICE: - type = RAD_VIRTUAL; - break; - } - - if (rad_put_int(rad->cx.rad, RAD_NAS_PORT_TYPE, type) != 0) { - log_Printf(LogERROR, "rad_put: rad_put_int: %s\n", rad_strerror(rad->cx.rad)); - rad_close(rad->cx.rad); - return 0; - } - - switch (rad->port_id_type) { - case RPI_PID: - slot = (int)getpid(); - break; - case RPI_IFNUM: - slot = p->dl->bundle->iface->index; - break; - case RPI_TUNNUM: - slot = p->dl->bundle->unit; - break; - case RPI_DEFAULT: - default: - slot = physical_Slot(p); - break; - } - - if (slot >= 0) - if (rad_put_int(rad->cx.rad, RAD_NAS_PORT, slot) != 0) { - log_Printf(LogERROR, "rad_put: rad_put_int: %s\n", rad_strerror(rad->cx.rad)); - rad_close(rad->cx.rad); - return 0; - } - - return 1; -} - -/* - * Start an authentication request to the RADIUS server. - */ -int -radius_Authenticate(struct radius *r, struct authinfo *authp, const char *name, - const char *key, int klen, const char *nchallenge, - int nclen) -{ - char hostname[MAXHOSTNAMELEN]; - struct timeval tv; - const char *what = "questionable"; /* silence warnings! */ - char *mac_addr; - int got; - struct hostent *hp; - struct in_addr hostaddr; -#ifndef NODES - struct mschap_response msresp; - struct mschap2_response msresp2; - const struct MSCHAPv2_resp *keyv2; -#endif - - if (!*r->cfg.file) - return 0; - - if (r->cx.fd != -1) - /* - * We assume that our name/key/challenge is the same as last time, - * and just continue to wait for the RADIUS server(s). - */ - return 1; - - radius_Destroy(r); - - if ((r->cx.rad = rad_auth_open()) == NULL) { - log_Printf(LogERROR, "rad_auth_open: %s\n", strerror(errno)); - return 0; - } - - if (rad_config(r->cx.rad, r->cfg.file) != 0) { - log_Printf(LogERROR, "rad_config: %s\n", rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return 0; - } - - if (rad_create_request(r->cx.rad, RAD_ACCESS_REQUEST) != 0) { - log_Printf(LogERROR, "rad_create_request: %s\n", rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return 0; - } - - if (rad_put_string(r->cx.rad, RAD_USER_NAME, name) != 0 || - rad_put_int(r->cx.rad, RAD_SERVICE_TYPE, RAD_FRAMED) != 0 || - rad_put_int(r->cx.rad, RAD_FRAMED_PROTOCOL, RAD_PPP) != 0) { - log_Printf(LogERROR, "rad_put: %s\n", rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return 0; - } - - switch (authp->physical->link.lcp.want_auth) { - case PROTO_PAP: - /* We're talking PAP */ - if (rad_put_attr(r->cx.rad, RAD_USER_PASSWORD, key, klen) != 0) { - log_Printf(LogERROR, "PAP: rad_put_string: %s\n", - rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return 0; - } - what = "PAP"; - break; - - case PROTO_CHAP: - switch (authp->physical->link.lcp.want_authtype) { - case 0x5: - if (rad_put_attr(r->cx.rad, RAD_CHAP_PASSWORD, key, klen) != 0 || - rad_put_attr(r->cx.rad, RAD_CHAP_CHALLENGE, nchallenge, nclen) != 0) { - log_Printf(LogERROR, "CHAP: rad_put_string: %s\n", - rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return 0; - } - what = "CHAP"; - break; - -#ifndef NODES - case 0x80: - if (klen != 50) { - log_Printf(LogERROR, "CHAP80: Unrecognised key length %d\n", klen); - rad_close(r->cx.rad); - return 0; - } - - rad_put_vendor_attr(r->cx.rad, RAD_VENDOR_MICROSOFT, - RAD_MICROSOFT_MS_CHAP_CHALLENGE, nchallenge, nclen); - msresp.ident = *key; - msresp.flags = 0x01; - memcpy(msresp.lm_response, key + 1, 24); - memcpy(msresp.nt_response, key + 25, 24); - rad_put_vendor_attr(r->cx.rad, RAD_VENDOR_MICROSOFT, - RAD_MICROSOFT_MS_CHAP_RESPONSE, &msresp, - sizeof msresp); - what = "MSCHAP"; - break; - - case 0x81: - if (klen != sizeof(*keyv2) + 1) { - log_Printf(LogERROR, "CHAP81: Unrecognised key length %d\n", klen); - rad_close(r->cx.rad); - return 0; - } - - keyv2 = (const struct MSCHAPv2_resp *)(key + 1); - rad_put_vendor_attr(r->cx.rad, RAD_VENDOR_MICROSOFT, - RAD_MICROSOFT_MS_CHAP_CHALLENGE, nchallenge, nclen); - msresp2.ident = *key; - msresp2.flags = keyv2->Flags; - memcpy(msresp2.response, keyv2->NTResponse, sizeof msresp2.response); - memset(msresp2.reserved, '\0', sizeof msresp2.reserved); - memcpy(msresp2.pchallenge, keyv2->PeerChallenge, - sizeof msresp2.pchallenge); - rad_put_vendor_attr(r->cx.rad, RAD_VENDOR_MICROSOFT, - RAD_MICROSOFT_MS_CHAP2_RESPONSE, &msresp2, - sizeof msresp2); - what = "MSCHAPv2"; - break; -#endif - default: - log_Printf(LogERROR, "CHAP: Unrecognised type 0x%02x\n", - authp->physical->link.lcp.want_authtype); - rad_close(r->cx.rad); - return 0; - } - } - - if (gethostname(hostname, sizeof hostname) != 0) - log_Printf(LogERROR, "rad_put: gethostname(): %s\n", strerror(errno)); - else { - if (Enabled(authp->physical->dl->bundle, OPT_NAS_IP_ADDRESS) && - (hp = gethostbyname(hostname)) != NULL) { - hostaddr.s_addr = *(u_long *)hp->h_addr; - if (rad_put_addr(r->cx.rad, RAD_NAS_IP_ADDRESS, hostaddr) != 0) { - log_Printf(LogERROR, "rad_put: rad_put_string: %s\n", - rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return 0; - } - } - if (Enabled(authp->physical->dl->bundle, OPT_NAS_IDENTIFIER) && - rad_put_string(r->cx.rad, RAD_NAS_IDENTIFIER, hostname) != 0) { - log_Printf(LogERROR, "rad_put: rad_put_string: %s\n", - rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return 0; - } - } - - if ((mac_addr = getenv("HISMACADDR")) != NULL && - rad_put_string(r->cx.rad, RAD_CALLING_STATION_ID, mac_addr) != 0) { - log_Printf(LogERROR, "rad_put: %s\n", rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return 0; - } - - radius_put_physical_details(r, authp->physical); - - log_Printf(LogRADIUS, "Radius(auth): %s data sent for %s\n", what, name); - - r->cx.auth = authp; - if ((got = rad_init_send_request(r->cx.rad, &r->cx.fd, &tv))) - radius_Process(r, got); - else { - log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, - "Radius: Request sent\n"); - log_Printf(LogDEBUG, "Using radius_Timeout [%p]\n", radius_Timeout); - r->cx.timer.load = tv.tv_usec / TICKUNIT + tv.tv_sec * SECTICKS; - r->cx.timer.func = radius_Timeout; - r->cx.timer.name = "radius auth"; - r->cx.timer.arg = r; - timer_Start(&r->cx.timer); - } - - return 1; -} - -/* Fetch IP, netmask from IPCP */ -void -radius_Account_Set_Ip(struct radacct *ac, struct in_addr *peer_ip, - struct in_addr *netmask) -{ - ac->proto = PROTO_IPCP; - memcpy(&ac->peer.ip.addr, peer_ip, sizeof(ac->peer.ip.addr)); - memcpy(&ac->peer.ip.mask, netmask, sizeof(ac->peer.ip.mask)); -} - -#ifndef NOINET6 -/* Fetch interface-id from IPV6CP */ -void -radius_Account_Set_Ipv6(struct radacct *ac, u_char *ifid) -{ - ac->proto = PROTO_IPV6CP; - memcpy(&ac->peer.ipv6.ifid, ifid, sizeof(ac->peer.ipv6.ifid)); -} -#endif - -/* - * Send an accounting request to the RADIUS server - */ -void -radius_Account(struct radius *r, struct radacct *ac, struct datalink *dl, - int acct_type, struct pppThroughput *stats) -{ - struct timeval tv; - int got; - char hostname[MAXHOSTNAMELEN]; - char *mac_addr; - struct hostent *hp; - struct in_addr hostaddr; - - if (!*r->cfg.file) - return; - - if (r->cx.fd != -1) - /* - * We assume that our name/key/challenge is the same as last time, - * and just continue to wait for the RADIUS server(s). - */ - return; - - timer_Stop(&r->cx.timer); - - if ((r->cx.rad = rad_acct_open()) == NULL) { - log_Printf(LogERROR, "rad_auth_open: %s\n", strerror(errno)); - return; - } - - if (rad_config(r->cx.rad, r->cfg.file) != 0) { - log_Printf(LogERROR, "rad_config: %s\n", rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return; - } - - if (rad_create_request(r->cx.rad, RAD_ACCOUNTING_REQUEST) != 0) { - log_Printf(LogERROR, "rad_create_request: %s\n", rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return; - } - - /* Grab some accounting data and initialize structure */ - if (acct_type == RAD_START) { - ac->rad_parent = r; - /* Fetch username from datalink */ - strncpy(ac->user_name, dl->peer.authname, sizeof ac->user_name); - ac->user_name[AUTHLEN-1] = '\0'; - - ac->authentic = 2; /* Assume RADIUS verified auth data */ - - /* Generate a session ID */ - snprintf(ac->session_id, sizeof ac->session_id, "%s%ld-%s%lu", - dl->bundle->cfg.auth.name, (long)getpid(), - dl->peer.authname, (unsigned long)stats->uptime); - - /* And grab our MP socket name */ - snprintf(ac->multi_session_id, sizeof ac->multi_session_id, "%s", - dl->bundle->ncp.mp.active ? - dl->bundle->ncp.mp.server.socket.sun_path : ""); - }; - - if (rad_put_string(r->cx.rad, RAD_USER_NAME, ac->user_name) != 0 || - rad_put_int(r->cx.rad, RAD_SERVICE_TYPE, RAD_FRAMED) != 0 || - rad_put_int(r->cx.rad, RAD_FRAMED_PROTOCOL, RAD_PPP) != 0) { - log_Printf(LogERROR, "rad_put: %s\n", rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return; - } - switch (ac->proto) { - case PROTO_IPCP: - if (rad_put_addr(r->cx.rad, RAD_FRAMED_IP_ADDRESS, - ac->peer.ip.addr) != 0 || - rad_put_addr(r->cx.rad, RAD_FRAMED_IP_NETMASK, - ac->peer.ip.mask) != 0) { - log_Printf(LogERROR, "rad_put: %s\n", rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return; - } - break; -#ifndef NOINET6 - case PROTO_IPV6CP: - if (rad_put_attr(r->cx.rad, RAD_FRAMED_INTERFACE_ID, ac->peer.ipv6.ifid, - sizeof(ac->peer.ipv6.ifid)) != 0) { - log_Printf(LogERROR, "rad_put_attr: %s\n", rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return; - } - if (r->ipv6prefix) { - /* - * Since PPP doesn't delegate an IPv6 prefix to a peer, - * Framed-IPv6-Prefix may be not used, actually. - */ - if (rad_put_attr(r->cx.rad, RAD_FRAMED_IPV6_PREFIX, r->ipv6prefix, - sizeof(struct in6_addr) + 2) != 0) { - log_Printf(LogERROR, "rad_put_attr: %s\n", rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return; - } - } - break; -#endif - default: - /* We don't log any protocol specific information */ - break; - } - - if ((mac_addr = getenv("HISMACADDR")) != NULL && - rad_put_string(r->cx.rad, RAD_CALLING_STATION_ID, mac_addr) != 0) { - log_Printf(LogERROR, "rad_put: %s\n", rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return; - } - - if (gethostname(hostname, sizeof hostname) != 0) - log_Printf(LogERROR, "rad_put: gethostname(): %s\n", strerror(errno)); - else { - if (Enabled(dl->bundle, OPT_NAS_IP_ADDRESS) && - (hp = gethostbyname(hostname)) != NULL) { - hostaddr.s_addr = *(u_long *)hp->h_addr; - if (rad_put_addr(r->cx.rad, RAD_NAS_IP_ADDRESS, hostaddr) != 0) { - log_Printf(LogERROR, "rad_put: rad_put_string: %s\n", - rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return; - } - } - if (Enabled(dl->bundle, OPT_NAS_IDENTIFIER) && - rad_put_string(r->cx.rad, RAD_NAS_IDENTIFIER, hostname) != 0) { - log_Printf(LogERROR, "rad_put: rad_put_string: %s\n", - rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return; - } - } - - radius_put_physical_details(r, dl->physical); - - if (rad_put_int(r->cx.rad, RAD_ACCT_STATUS_TYPE, acct_type) != 0 || - rad_put_string(r->cx.rad, RAD_ACCT_SESSION_ID, ac->session_id) != 0 || - rad_put_string(r->cx.rad, RAD_ACCT_MULTI_SESSION_ID, - ac->multi_session_id) != 0 || - rad_put_int(r->cx.rad, RAD_ACCT_DELAY_TIME, 0) != 0) { -/* XXX ACCT_DELAY_TIME should be increased each time a packet is waiting */ - log_Printf(LogERROR, "rad_put: %s\n", rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return; - } - - if (acct_type == RAD_STOP || acct_type == RAD_ALIVE) - /* Show some statistics */ - if (rad_put_int(r->cx.rad, RAD_ACCT_INPUT_OCTETS, stats->OctetsIn % UINT32_MAX) != 0 || - rad_put_int(r->cx.rad, RAD_ACCT_INPUT_GIGAWORDS, stats->OctetsIn / UINT32_MAX) != 0 || - rad_put_int(r->cx.rad, RAD_ACCT_INPUT_PACKETS, stats->PacketsIn) != 0 || - rad_put_int(r->cx.rad, RAD_ACCT_OUTPUT_OCTETS, stats->OctetsOut % UINT32_MAX) != 0 || - rad_put_int(r->cx.rad, RAD_ACCT_OUTPUT_GIGAWORDS, stats->OctetsOut / UINT32_MAX) != 0 || - rad_put_int(r->cx.rad, RAD_ACCT_OUTPUT_PACKETS, stats->PacketsOut) - != 0 || - rad_put_int(r->cx.rad, RAD_ACCT_SESSION_TIME, throughput_uptime(stats)) - != 0) { - log_Printf(LogERROR, "rad_put: %s\n", rad_strerror(r->cx.rad)); - rad_close(r->cx.rad); - return; - } - - if (log_IsKept(LogPHASE) || log_IsKept(LogRADIUS)) { - const char *what; - int level; - - switch (acct_type) { - case RAD_START: - what = "START"; - level = log_IsKept(LogPHASE) ? LogPHASE : LogRADIUS; - break; - case RAD_STOP: - what = "STOP"; - level = log_IsKept(LogPHASE) ? LogPHASE : LogRADIUS; - break; - case RAD_ALIVE: - what = "ALIVE"; - level = LogRADIUS; - break; - default: - what = "<unknown>"; - level = log_IsKept(LogPHASE) ? LogPHASE : LogRADIUS; - break; - } - log_Printf(level, "Radius(acct): %s data sent\n", what); - } - - r->cx.auth = NULL; /* Not valid for accounting requests */ - if ((got = rad_init_send_request(r->cx.rad, &r->cx.fd, &tv))) - radius_Process(r, got); - else { - log_Printf(LogDEBUG, "Using radius_Timeout [%p]\n", radius_Timeout); - r->cx.timer.load = tv.tv_usec / TICKUNIT + tv.tv_sec * SECTICKS; - r->cx.timer.func = radius_Timeout; - r->cx.timer.name = "radius acct"; - r->cx.timer.arg = r; - timer_Start(&r->cx.timer); - } -} - -/* - * How do things look at the moment ? - */ -void -radius_Show(struct radius *r, struct prompt *p) -{ - prompt_Printf(p, " Radius config: %s", - *r->cfg.file ? r->cfg.file : "none"); - if (r->valid) { - prompt_Printf(p, "\n IP: %s\n", inet_ntoa(r->ip)); - prompt_Printf(p, " Netmask: %s\n", inet_ntoa(r->mask)); - prompt_Printf(p, " MTU: %lu\n", r->mtu); - prompt_Printf(p, " VJ: %sabled\n", r->vj ? "en" : "dis"); - prompt_Printf(p, " Message: %s\n", r->repstr ? r->repstr : ""); - prompt_Printf(p, " MPPE Enc Policy: %s\n", - radius_policyname(r->mppe.policy)); - prompt_Printf(p, " MPPE Enc Types: %s\n", - radius_typesname(r->mppe.types)); - prompt_Printf(p, " MPPE Recv Key: %seceived\n", - r->mppe.recvkey ? "R" : "Not r"); - prompt_Printf(p, " MPPE Send Key: %seceived\n", - r->mppe.sendkey ? "R" : "Not r"); - prompt_Printf(p, " MS-CHAP2-Response: %s\n", - r->msrepstr ? r->msrepstr : ""); - prompt_Printf(p, " Error Message: %s\n", r->errstr ? r->errstr : ""); - if (r->routes) - route_ShowSticky(p, r->routes, " Routes", 16); -#ifndef NOINET6 - if (r->ipv6routes) - route_ShowSticky(p, r->ipv6routes, " IPv6 Routes", 16); -#endif - } else - prompt_Printf(p, " (not authenticated)\n"); -} - -static void -radius_alive(void *v) -{ - struct bundle *bundle = (struct bundle *)v; - - timer_Stop(&bundle->radius.alive.timer); - bundle->radius.alive.timer.load = bundle->radius.alive.interval * SECTICKS; - if (bundle->radius.alive.timer.load) { - radius_Account(&bundle->radius, &bundle->radacct, - bundle->links, RAD_ALIVE, &bundle->ncp.ipcp.throughput); - timer_Start(&bundle->radius.alive.timer); - } -} - -void -radius_StartTimer(struct bundle *bundle) -{ - if (bundle->radius.cfg.file && bundle->radius.alive.interval) { - bundle->radius.alive.timer.func = radius_alive; - bundle->radius.alive.timer.name = "radius alive"; - bundle->radius.alive.timer.load = bundle->radius.alive.interval * SECTICKS; - bundle->radius.alive.timer.arg = bundle; - radius_alive(bundle); - } -} - -void -radius_StopTimer(struct radius *r) -{ - timer_Stop(&r->alive.timer); -} |
