/*
* auth.c
*
* Written by Archie Cobbs <archie@freebsd.org>
* Copyright (c) 1995-1999 Whistle Communications, Inc. All rights reserved.
* See ``COPYRIGHT.whistle''
*/
#include "ppp.h"
#include "auth.h"
#include "pap.h"
#include "chap.h"
#include "lcp.h"
#include "log.h"
#include "ngfunc.h"
#include "msoft.h"
#include "util.h"
#ifdef USE_PAM
#include <security/pam_appl.h>
#endif
#ifdef USE_SYSTEM
#if __FreeBSD_version >= 900007
#include <utmpx.h>
#else
#include <utmp.h>
#include <libutil.h>
#endif
#endif
/*
* DEFINITIONS
*/
#ifdef USE_OPIE
#define OPIE_ALG_MD5 5
#endif
/*
* INTERNAL FUNCTIONS
*/
static void AuthTimeout(void *arg);
static int
AuthGetExternalPassword(const char *extcmd, char *authname,
char *password, size_t passlen);
static void AuthAsync(void *arg);
static void AuthAsyncFinish(void *arg, int was_canceled);
static int AuthPreChecks(AuthData auth);
static void AuthAccount(void *arg);
static void AuthAccountFinish(void *arg, int was_canceled);
static void AuthInternal(AuthData auth);
static int AuthExternal(AuthData auth);
static int AuthExternalAcct(AuthData auth);
#ifdef USE_SYSTEM
static void AuthSystem(AuthData auth);
static int AuthSystemAcct(AuthData auth);
#endif
#ifdef USE_PAM
static void AuthPAM(AuthData auth);
static int AuthPAMAcct(AuthData auth);
static int
pam_conv(int n, const struct pam_message **msg,
struct pam_response **resp, void *data);
#endif
#ifdef USE_OPIE
static void AuthOpie(AuthData auth);
#endif
static const char *AuthCode(int proto, u_char code, char *buf, size_t len);
static int AuthSetCommand(Context ctx, int ac, const char *const av[], const void *arg);
/* Set menu options */
enum {
SET_ACCEPT,
SET_DENY,
SET_ENABLE,
SET_DISABLE,
SET_YES,
SET_NO,
SET_AUTHNAME,
SET_PASSWORD,
SET_EXTAUTH_SCRIPT,
SET_EXTACCT_SCRIPT,
SET_MAX_LOGINS,
SET_ACCT_UPDATE,
SET_ACCT_UPDATE_LIMIT_IN,
SET_ACCT_UPDATE_LIMIT_OUT,
SET_TIMEOUT
};
/*
* GLOBAL VARIABLES
*/
const struct cmdtab AuthSetCmds[] = {
{"max-logins {num} [CI]", "Max concurrent logins",
AuthSetCommand, NULL, 2, (void *)SET_MAX_LOGINS},
{"authname {name}", "Authentication name",
AuthSetCommand, NULL, 2, (void *)SET_AUTHNAME},
{"password {pass}", "Authentication password",
AuthSetCommand, NULL, 2, (void *)SET_PASSWORD},
{"extauth-script {script}", "Authentication script",
AuthSetCommand, NULL, 2, (void *)SET_EXTAUTH_SCRIPT},
{"extacct-script {script}", "Accounting script",
AuthSetCommand, NULL, 2, (void *)SET_EXTACCT_SCRIPT},
{"acct-update {seconds}", "set update interval",
AuthSetCommand, NULL, 2, (void *)SET_ACCT_UPDATE},
{"update-limit-in {bytes}", "set update suppresion limit",
AuthSetCommand, NULL, 2, (void *)SET_ACCT_UPDATE_LIMIT_IN},
{"update-limit-out {bytes}", "set update suppresion limit",
AuthSetCommand, NULL, 2, (void *)SET_ACCT_UPDATE_LIMIT_OUT},
{"timeout {seconds}", "set auth timeout",
AuthSetCommand, NULL, 2, (void *)SET_TIMEOUT},
{"accept [opt ...]", "Accept option",
AuthSetCommand, NULL, 2, (void *)SET_ACCEPT},
{"deny [opt ...]", "Deny option",
AuthSetCommand, NULL, 2, (void *)SET_DENY},
{"enable [opt ...]", "Enable option",
AuthSetCommand, NULL, 2, (void *)SET_ENABLE},
{"disable [opt ...]", "Disable option",
AuthSetCommand, NULL, 2, (void *)SET_DISABLE},
{"yes [opt ...]", "Enable and accept option",
AuthSetCommand, NULL, 2, (void *)SET_YES},
{"no [opt ...]", "Disable and deny option",
AuthSetCommand, NULL, 2, (void *)SET_NO},
{NULL, NULL, NULL, NULL, 0, NULL},
};
const u_char gMsoftZeros[32];
static unsigned gMaxLogins = 0; /* max number of concurrent logins per
* user */
static unsigned gMaxLoginsCI = 0;
/*
* INTERNAL VARIABLES
*/
static const struct confinfo gConfList[] = {
{0, AUTH_CONF_RADIUS_AUTH, "radius-auth"},
{0, AUTH_CONF_RADIUS_ACCT, "radius-acct"},
{0, AUTH_CONF_INTERNAL, "internal"},
{0, AUTH_CONF_EXT_AUTH, "ext-auth"},
{0, AUTH_CONF_EXT_ACCT, "ext-acct"},
#ifdef USE_SYSTEM
{0, AUTH_CONF_SYSTEM_AUTH, "system-auth"},
{0, AUTH_CONF_SYSTEM_ACCT, "system-acct"},
#endif
#ifdef USE_PAM
{0, AUTH_CONF_PAM_AUTH, "pam-auth"},
{0, AUTH_CONF_PAM_ACCT, "pam-acct"},
#endif
#ifdef USE_OPIE
{0, AUTH_CONF_OPIE, "opie"},
#endif
{0, AUTH_CONF_ACCT_MANDATORY, "acct-mandatory"},
{0, 0, NULL},
};
void
ACLCopy(struct acl *src, struct acl **dst)
{
while (src != NULL) {
*dst = Mdup(MB_AUTH, src, sizeof(struct acl) + strlen(src->rule));
src = src->next;
dst = &((*dst)->next);
};
*dst = NULL;
}
void
ACLDestroy(struct acl *acl)
{
struct acl *acl1;
while (acl != NULL) {
acl1 = acl->next;
Freee(acl);
acl = acl1;
};
}
void
authparamsInit(struct authparams *ap)
{
memset(ap, 0, sizeof(struct authparams));
#ifdef USE_RADIUS
ap->eapmsg = NULL;
ap->state = NULL;
ap->class = NULL;
ap->filter_id = NULL;
#endif
ap->msdomain = NULL;
#ifdef SIOCSIFDESCR
ap->ifdescr = NULL;
#endif
SLIST_INIT(&ap->routes);
}
void
authparamsDestroy(struct authparams *ap)
{
IfaceRoute r;
#ifdef USE_NG_BPF
int i;
#endif
#ifdef USE_RADIUS
Freee(ap->eapmsg);
Freee(ap->state);
Freee(ap->class);
Freee(ap->filter_id);
#endif
#ifdef USE_IPFW
ACLDestroy(ap->acl_rule);
ACLDestroy(ap->acl_pipe);
ACLDestroy(ap->acl_queue);
ACLDestroy(ap->acl_table);
#endif /* USE_IPFW */
#ifdef USE_NG_BPF
for (i = 0; i < ACL_FILTERS; i++)
ACLDestroy(ap->acl_filters[i]);
for (i = 0; i < ACL_DIRS; i++)
ACLDestroy(ap->acl_limits[i]);
#endif /* USE_NG_BPF */
while ((r = SLIST_FIRST(&ap->routes)) != NULL) {
SLIST_REMOVE_HEAD(&ap->routes, next);
Freee(r);
}
Freee(ap->msdomain);
#ifdef SIOCSIFDESCR
Freee(ap->ifdescr);
#endif
memset(ap, 0, sizeof(struct authparams));
}
void
authparamsCopy(struct authparams *src, struct authparams *dst)
{
IfaceRoute r, r1;
#ifdef USE_NG_BPF
int i;
#endif
memcpy(dst, src, sizeof(struct authparams));
#ifdef USE_RADIUS
if (src->eapmsg)
dst->eapmsg = Mdup(MB_AUTH, src->eapmsg, src->eapmsg_len);
if (src->state)
dst->state = Mdup(MB_AUTH, src->state, src->state_len);
if (src->class)
dst->class = Mdup(MB_AUTH, src->class, src->class_len);
if (src->filter_id)
dst->filter_id = Mstrdup(MB_AUTH, src->filter_id);
#endif
#ifdef USE_IPFW
ACLCopy(src->acl_rule, &dst->acl_rule);
ACLCopy(src->acl_pipe, &dst->acl_pipe);
ACLCopy(src->acl_queue, &dst->acl_queue);
ACLCopy(src->acl_table, &dst->acl_table);
#endif /* USE_IPFW */
#ifdef USE_NG_BPF
for (i = 0; i < ACL_FILTERS; i++)
ACLCopy(src->acl_filters[i], &dst->acl_filters[i]);
for (i = 0; i < ACL_DIRS; i++)
ACLCopy(src->acl_limits[i], &dst->acl_limits[i]);
#endif
SLIST_INIT(&dst->routes);
SLIST_FOREACH(r, &src->routes, next) {
r1 = Mdup(MB_AUTH, r, sizeof(*r1));
SLIST_INSERT_HEAD(&dst->routes, r1, next);
}
if (src->msdomain)
dst->msdomain = Mstrdup(MB_AUTH, src->msdomain);
#ifdef SIOCSIFDESCR
if (src->ifdescr)
dst->ifdescr = Mstrdup(MB_AUTH, src->ifdescr);
#endif
}
void
authparamsMove(struct authparams *src, struct authparams *dst)
{
memcpy(dst, src, sizeof(struct authparams));
memset(src, 0, sizeof(struct authparams));
}
/*
* AuthInit()
*/
void
AuthInit(Link l)
{
AuthConf const ac = &l->lcp.auth.conf;
ac->timeout = 40;
Enable(&ac->options, AUTH_CONF_INTERNAL);
Enable(&ac->options, AUTH_CONF_ACCT_MANDATORY);
#ifdef USE_RADIUS
EapInit(l);
RadiusInit(l);
#endif
}
/*
* AuthInst()
*
* Instantiate auth structure from template
*/
void
AuthInst(Auth auth, Auth autht)
{
memcpy(auth, autht, sizeof(*auth));
if (auth->conf.extauth_script)
autht->conf.extauth_script = Mstrdup(MB_AUTH, auth->conf.extauth_script);
if (auth->conf.extacct_script)
autht->conf.extacct_script = Mstrdup(MB_AUTH, auth->conf.extacct_script);
}
/*
* AuthShutdown()
*/
void
AuthShutdown(Link l)
{
Auth a = &l->lcp.auth;
if (a->thread)
paction_cancel(&a->thread);
if (a->acct_thread)
paction_cancel(&a->acct_thread);
Freee(a->conf.extauth_script);
Freee(a->conf.extacct_script);
}
/*
* AuthStart()
*
* Initialize authorization info for a link
*/
void
AuthStart(Link l)
{
Auth a = &l->lcp.auth;
/* generate a uniq session id */
snprintf(l->session_id, AUTH_MAX_SESSIONID, "%d-%s",
(int)(time(NULL) % 10000000), l->name);
authparamsInit(&a->params);
/* What auth protocols were negotiated by LCP? */
a->self_to_peer = l->lcp.peer_auth;
a->peer_to_self = l->lcp.want_auth;
a->self_to_peer_alg = l->lcp.peer_alg;
a->peer_to_self_alg = l->lcp.want_alg;
/* remember self's name */
PhysGetSelfName(l, a->params.selfname, sizeof(a->params.selfname));
/* remember peer's name */
PhysGetPeerName(l, a->params.peername, sizeof(a->params.peername));
/* remember self's IP address */
PhysGetSelfAddr(l, a->params.selfaddr, sizeof(a->params.selfaddr));
/* remember peer's IP address */
PhysGetPeerAddr(l, a->params.peeraddr, sizeof(a->params.peeraddr));
/* remember peer's TCP or UDP port */
PhysGetPeerPort(l, a->params.peerport, sizeof(a->params.peerport));
/* remember peer's MAC address */
PhysGetPeerMacAddr(l, a->params.peermacaddr, sizeof(a->params.peermacaddr));
/* remember peer's iface */
PhysGetPeerIface(l, a->params.peeriface, sizeof(a->params.peeriface));
/* remember calling number */
PhysGetCallingNum(l, a->params.callingnum, sizeof(a->params.callingnum));
/* remember called number */
PhysGetCalledNum(l, a->params.callednum, sizeof(a->params.callednum));
Log(LG_AUTH, ("[%s] %s: auth: peer wants %s, I want %s",
Pref(&l->lcp.fsm), Fsm(&l->lcp.fsm),
a->self_to_peer ? ProtoName(a->self_to_peer) : "nothing",
a->peer_to_self ? ProtoName(a->peer_to_self) : "nothing"));
/* Is there anything to do? */
if (!a->self_to_peer && !a->peer_to_self) {
LcpAuthResult(l, TRUE);
return;
}
/* Start global auth timer */
TimerInit(&a->timer, "AuthTimer",
l->lcp.auth.conf.timeout * SECONDS, AuthTimeout, l);
TimerStart(&a->timer);
/* Start my auth to him */
switch (a->self_to_peer) {
case 0:
break;
case PROTO_PAP:
PapStart(l, AUTH_SELF_TO_PEER);
break;
case PROTO_CHAP:
ChapStart(l, AUTH_SELF_TO_PEER);
break;
#ifdef USE_RADIUS
case PROTO_EAP:
EapStart(l, AUTH_SELF_TO_PEER);
break;
#endif
default:
assert(0);
}
/* Start his auth to me */
switch (a->peer_to_self) {
case 0:
break;
case PROTO_PAP:
PapStart(l, AUTH_PEER_TO_SELF);
break;
case PROTO_CHAP:
ChapStart(l, AUTH_PEER_TO_SELF);
break;
#ifdef USE_RADIUS
case PROTO_EAP:
EapStart(l, AUTH_PEER_TO_SELF);
break;
#endif
default:
assert(0);
}
}
/*
* AuthInput()
*
* Deal with PAP/CHAP/EAP packet
* But cannot be called for EAP packet if RADIUS support is not compiled in.
*/
void
AuthInput(Link l, int proto, Mbuf bp)
{
AuthData auth;
struct fsmheader fsmh;
u_char *pkt;
char buf[16];
u_short len;
uint16_t fsmh_len;
/* Sanity check */
if (l->lcp.phase != PHASE_AUTHENTICATE && l->lcp.phase != PHASE_NETWORK) {
Log(LG_ERR | LG_AUTH, ("[%s] AUTH: rec'd stray packet", l->name));
mbfree(bp);
return;
}
len = MBLEN(bp);
/* Sanity check length */
if (len < sizeof(fsmh)) {
Log(LG_ERR | LG_AUTH, ("[%s] AUTH: rec'd runt packet: %hu bytes",
l->name, len));
mbfree(bp);
return;
}
bp = mbread(bp, &fsmh, sizeof(fsmh));
fsmh_len = ntohs(fsmh.length);
if (len > fsmh_len) {
/* Sanity check length */
if (fsmh_len < sizeof(fsmh)) {
Log(LG_ERR | LG_AUTH, ("[%s] AUTH: bad length: says %hu, rec'd %hu",
l->name, fsmh_len, len));
mbfree(bp);
return;
}
len = fsmh_len;
}
len -= sizeof(fsmh);
pkt = MBDATA(bp);
#ifdef USE_RADIUS
if (proto == PROTO_EAP && bp) {
Log(LG_AUTH, ("[%s] %s: rec'd %s #%d len: %hu, type: %s", l->name,
ProtoName(proto), AuthCode(proto, fsmh.code, buf, sizeof(buf)), fsmh.id,
fsmh_len, EapType(pkt[0])));
} else
#endif
Log(LG_AUTH, ("[%s] %s: rec'd %s #%d len: %hu", l->name,
ProtoName(proto), AuthCode(proto, fsmh.code, buf, sizeof(buf)), fsmh.id,
fsmh_len));
auth = AuthDataNew(l);
auth->proto = proto;
auth->id = fsmh.id;
auth->code = fsmh.code;
/* Status defaults to undefined */
auth->status = AUTH_STATUS_UNDEF;
switch (proto) {
case PROTO_PAP:
PapInput(l, auth, pkt, len);
break;
case PROTO_CHAP:
ChapInput(l, auth, pkt, len);
break;
#ifdef USE_RADIUS
case PROTO_EAP:
EapInput(l, auth, pkt, len);
break;
#endif
default:
assert(0);
}
mbfree(bp);
}
/*
* AuthOutput()
*
*/
void
AuthOutput(Link l, int proto, u_int code, u_int id, const u_char *ptr,
int len, int add_len, u_char eap_type)
{
struct fsmheader lh;
Mbuf bp;
int plen;
char buf[32];
add_len = !!add_len;
/* Setup header */
if (proto == PROTO_EAP)
plen = sizeof(lh) + len + add_len + 1;
else
plen = sizeof(lh) + len + add_len;
lh.code = code;
lh.id = id;
lh.length = htons(plen);
/* Build packet */
bp = mbcopyback(NULL, 0, &lh, sizeof(lh));
if (proto == PROTO_EAP)
bp = mbcopyback(bp, MBLEN(bp), &eap_type, 1);
if (add_len) {
u_char tl = len;
bp = mbcopyback(bp, MBLEN(bp), &tl, 1);
}
bp = mbcopyback(bp, MBLEN(bp), ptr, len);
#ifdef USE_RADIUS
if (proto == PROTO_EAP) {
Log(LG_AUTH, ("[%s] %s: sending %s #%d len: %d, type: %s", l->name,
ProtoName(proto), AuthCode(proto, code, buf, sizeof(buf)), id, plen, EapType(eap_type)));
} else
#endif
Log(LG_AUTH, ("[%s] %s: sending %s #%d len: %d", l->name,
ProtoName(proto), AuthCode(proto, code, buf, sizeof(buf)), id, plen));
/* Send it out */
NgFuncWritePppFrameLink(l, proto, bp);
}
/*
* AuthFinish()
*
* Authorization is finished, so continue one way or the other
*/
void
AuthFinish(Link l, int which, int ok)
{
Auth const a = &l->lcp.auth;
if (which == AUTH_SELF_TO_PEER)
a->self_to_peer = 0;
else
a->peer_to_self = 0;
/* Did auth fail (in either direction)? */
if (!ok) {
AuthStop(l);
LcpAuthResult(l, FALSE);
return;
}
/* Did auth succeed (in both directions)? */
if (!a->peer_to_self && !a->self_to_peer) {
AuthStop(l);
LcpAuthResult(l, TRUE);
return;
}
}
/*
* AuthCleanup()
*
* Cleanup auth structure, invoked on link-down
*/
void
AuthCleanup(Link l)
{
Auth a = &l->lcp.auth;
Log(LG_AUTH2, ("[%s] AUTH: Cleanup", l->name));
authparamsDestroy(&a->params);
l->session_id[0] = 0;
}
/*
* AuthDataNew()
*
* Create a new auth-data object
*/
AuthData
AuthDataNew(Link l)
{
AuthData auth;
Auth a = &l->lcp.auth;
auth = Malloc(MB_AUTH, sizeof(*auth));
auth->reply_message = NULL;
auth->mschap_error = NULL;
auth->mschapv2resp = NULL;
auth->conf = l->lcp.auth.conf;
if (l->lcp.auth.conf.extauth_script)
auth->conf.extauth_script = Mstrdup(MB_AUTH, l->lcp.auth.conf.extauth_script);
if (l->lcp.auth.conf.extacct_script)
auth->conf.extacct_script = Mstrdup(MB_AUTH, l->lcp.auth.conf.extacct_script);
strlcpy(auth->info.lnkname, l->name, sizeof(auth->info.lnkname));
strlcpy(auth->info.msession_id, l->msession_id, sizeof(auth->info.msession_id));
strlcpy(auth->info.session_id, l->session_id, sizeof(auth->info.session_id));
strlcpy(auth->info.peer_ident, l->lcp.peer_ident, sizeof(l->lcp.peer_ident));
auth->info.originate = l->originate;
auth->info.downReason = NULL;
if (l->bund) {
strlcpy(auth->info.ifname, l->bund->iface.ifname, sizeof(auth->info.ifname));
auth->info.ifindex = l->bund->iface.ifindex;
strlcpy(auth->info.bundname, l->bund->name, sizeof(auth->info.bundname));
auth->info.n_links = l->bund->n_links;
auth->info.peer_addr = l->bund->ipcp.peer_addr;
bcopy(&auth->info.peer_addr6, &l->bund->ipv6cp.peer_addr, sizeof(struct in6_addr));
}
/* Copy current link statistics */
memcpy(&auth->info.stats, &l->stats, sizeof(auth->info.stats));
#ifdef USE_NG_BPF
/* If it is present copy services statistics */
if (l->bund) {
IfaceGetStats(l->bund, &auth->info.ss);
IfaceAddStats(&auth->info.ss, &l->bund->iface.prevstats);
}
#endif
if (l->downReasonValid)
auth->info.downReason = Mstrdup(MB_AUTH, l->downReason);
auth->info.last_up = l->last_up;
auth->info.phys_type = l->type;
auth->info.linkID = l->id;
authparamsCopy(&a->params, &auth->params);
return auth;
}
/*
* AuthDataDestroy()
*
* Destroy authdata
*/
void
AuthDataDestroy(AuthData auth)
{
authparamsDestroy(&auth->params);
Freee(auth->info.downReason);
Freee(auth->reply_message);
Freee(auth->mschap_error);
Freee(auth->mschapv2resp);
#ifdef USE_NG_BPF
IfaceFreeStats(&auth->info.ss);
#endif
Freee(auth->conf.extauth_script);
Freee(auth->conf.extacct_script);
Freee(auth);
}
/*
* AuthStop()
*
* Stop the authorization process
*/
void
AuthStop(Link l)
{
Auth a = &l->lcp.auth;
TimerStop(&a->timer);
PapStop(&a->pap);
ChapStop(&a->chap);
#ifdef USE_RADIUS
EapStop(&a->eap);
#endif
paction_cancel(&a->thread);
}
/*
* AuthStat()
*
* Show auth stats
*/
int
AuthStat(Context ctx, int ac, const char *const av[], const void *arg)
{
Auth const au = &ctx->lnk->lcp.auth;
AuthConf const conf = &au->conf;
char buf[48], buf2[16];
#if defined(USE_IPFW) || defined(USE_NG_BPF)
struct acl *a;
#endif
IfaceRoute r;
#ifdef USE_NG_BPF
int k;
#endif
(void)ac;
(void)av;
(void)arg;
Printf("Configuration:\r\n");
Printf("\tMy authname : %s\r\n", conf->authname);
Printf("\tMax-Logins : %u%s\r\n", gMaxLogins, (gMaxLoginsCI ? " CI" : ""));
Printf("\tAcct Update : %d\r\n", conf->acct_update);
Printf("\t Limit In : %d\r\n", conf->acct_update_lim_recv);
Printf("\t Limit Out : %d\r\n", conf->acct_update_lim_xmit);
Printf("\tAuth timeout : %d\r\n", conf->timeout);
Printf("\tExtAuth script : %s\r\n", conf->extauth_script ? conf->extauth_script : "");
Printf("\tExtAcct script : %s\r\n", conf->extacct_script ? conf->extacct_script : "");
Printf("Auth options\r\n");
OptStat(ctx, &conf->options, gConfList);
Printf("Auth Data\r\n");
Printf("\tPeer authname : %s\r\n", au->params.authname);
Printf("\tInterface name : %s\r\n", au->params.ifname);
#ifdef SIOCSIFDESCR
Printf("\tInterface descr.: \"%s\"\r\n",
au->params.ifdescr != NULL ? au->params.ifdescr : "<none>");
#endif
#ifdef SIOCAIFGROUP
Printf("\tInterface group : %s\r\n", au->params.ifgroup);
#endif
Printf("\tIP range : %s\r\n", (au->params.range_valid) ?
u_rangetoa(&au->params.range, buf, sizeof(buf)) : "");
Printf("\tIP pool : %s\r\n", au->params.ippool);
Printf("\tDNS : %s %s\r\n",
inet_ntop(AF_INET, &au->params.peer_dns[0], buf, sizeof(buf)),
inet_ntop(AF_INET, &au->params.peer_dns[1], buf2, sizeof(buf2)));
Printf("\tNBNS : %s %s\r\n",
inet_ntop(AF_INET, &au->params.peer_nbns[0], buf, sizeof(buf)),
inet_ntop(AF_INET, &au->params.peer_nbns[1], buf2, sizeof(buf2)));
Printf("\tVJ Compression : %s\r\n", au->params.vjc_enable ? "yes" : "no");
Printf("\tMTU : %u\r\n", au->params.mtu);
Printf("\tSession-Timeout : %u\r\n", au->params.session_timeout);
Printf("\tIdle-Timeout : %u\r\n", au->params.idle_timeout);
Printf("\tAcct-Update : %u\r\n", au->params.acct_update);
Printf("\tRoutes :\r\n");
SLIST_FOREACH(r, &au->params.routes, next) {
Printf("\t\t%s\r\n", u_rangetoa(&r->dest, buf, sizeof(buf)));
}
#ifdef USE_IPFW
Printf("\tIPFW rules :\r\n");
a = au->params.acl_rule;
while (a) {
Printf("\t\t%d\t: '%s'\r\n", a->number, a->rule);
a = a->next;
}
Printf("\tIPFW pipes :\r\n");
a = au->params.acl_pipe;
while (a) {
Printf("\t\t%d\t: '%s'\r\n", a->number, a->rule);
a = a->next;
}
Printf("\tIPFW queues :\r\n");
a = au->params.acl_queue;
while (a) {
Printf("\t\t%d\t: '%s'\r\n", a->number, a->rule);
a = a->next;
}
Printf("\tIPFW tables :\r\n");
a = au->params.acl_table;
while (a) {
if (a->number != 0)
Printf("\t\t%d\t: '%s'\r\n", a->number, a->rule);
else
Printf("\t\t#%d\t: '%s'\r\n", a->real_number, a->rule);
a = a->next;
}
#endif /* USE_IPFW */
#ifdef USE_NG_BPF
Printf("\tTraffic filters :\r\n");
for (k = 0; k < ACL_FILTERS; k++) {
a = au->params.acl_filters[k];
while (a) {
Printf("\t%d#%d\t: '%s'\r\n", (k + 1), a->number, a->rule);
a = a->next;
}
}
Printf("\tTraffic limits :\r\n");
for (k = 0; k < 2; k++) {
a = au->params.acl_limits[k];
while (a) {
Printf("\t\t%s#%d%s%s\t: '%s'\r\n", (k ? "out" : "in"), a->number,
((a->name[0]) ? "#" : ""), a->name, a->rule);
a = a->next;
}
}
#endif /* USE_NG_BPF */
Printf("\tMS-Domain : %s\r\n", au->params.msdomain);
Printf("\tMPPE Types : %s\r\n", AuthMPPEPolicyname(au->params.msoft.policy));
Printf("\tMPPE Policy : %s\r\n", AuthMPPETypesname(au->params.msoft.types, buf, sizeof(buf)));
Printf("\tMPPE Keys : %s\r\n", au->params.msoft.has_keys ? "yes" : "no");
return (0);
}
/*
* AuthAccount()
*
* Accounting stuff,
*/
void
AuthAccountStart(Link l, int type)
{
Auth const a = &l->lcp.auth;
AuthData auth;
/* maybe an outstanding thread is running */
if (a->acct_thread) {
if (type == AUTH_ACCT_START || type == AUTH_ACCT_STOP) {
paction_cancel(&a->acct_thread);
} else {
Log(LG_AUTH2, ("[%s] ACCT: Accounting thread is already running",
l->name));
return;
}
}
LinkUpdateStats(l);
if (type == AUTH_ACCT_STOP) {
Log(LG_AUTH2, ("[%s] ACCT: Accounting data for user '%s': %lu seconds, %llu octets in, %llu octets out",
l->name, a->params.authname,
(unsigned long)(time(NULL) - l->last_up),
(unsigned long long)l->stats.recvOctets,
(unsigned long long)l->stats.xmitOctets));
}
if (type == AUTH_ACCT_START) {
u_int updateInterval;
if (a->params.acct_update > 0)
updateInterval = a->params.acct_update;
else
updateInterval = a->conf.acct_update;
if (updateInterval > 0) {
/* Save initial statistics. */
memcpy(&a->prev_stats, &l->stats,
sizeof(a->prev_stats));
/* Start accounting update timer. */
TimerInit(&a->acct_timer, "AuthAccountTimer",
updateInterval * SECONDS, AuthAccountTimeout, l);
TimerStartRecurring(&a->acct_timer);
}
}
if (type == AUTH_ACCT_UPDATE) {
/*
* Suppress sending of accounting update, if byte threshold
* is configured, and delta since last update doesn't exceed it.
*/
u_int lim_recv, lim_xmit;
if (a->params.acct_update_lim_recv > 0)
lim_recv = a->params.acct_update_lim_recv;
else
lim_recv = a->conf.acct_update_lim_recv;
if (a->params.acct_update_lim_xmit > 0)
lim_xmit = a->params.acct_update_lim_xmit;
else
lim_xmit = a->conf.acct_update_lim_xmit;
if (lim_recv > 0 || lim_xmit > 0) {
if ((l->stats.recvOctets - a->prev_stats.recvOctets < lim_recv) &&
(l->stats.xmitOctets - a->prev_stats.xmitOctets < lim_xmit)) {
Log(LG_AUTH2, ("[%s] ACCT: Shouldn't send Interim-Update", l->name));
return;
} else {
/* Save current statistics. */
memcpy(&a->prev_stats, &l->stats, sizeof(a->prev_stats));
}
}
}
if (type == AUTH_ACCT_STOP) {
/* Stop accounting update timer if running. */
TimerStop(&a->acct_timer);
}
if (Enabled(&a->conf.options, AUTH_CONF_RADIUS_ACCT) ||
#ifdef USE_PAM
Enabled(&a->conf.options, AUTH_CONF_PAM_ACCT) ||
#endif
#ifdef USE_SYSTEM
Enabled(&a->conf.options, AUTH_CONF_SYSTEM_ACCT) ||
#endif
Enabled(&a->conf.options, AUTH_CONF_EXT_ACCT)) {
auth = AuthDataNew(l);
auth->acct_type = type;
if (paction_start(&a->acct_thread, &gGiantMutex, AuthAccount,
AuthAccountFinish, auth) == -1) {
Perror("[%s] ACCT: Couldn't start thread", l->name);
AuthDataDestroy(auth);
}
}
}
/*
* AuthAccountTimeout()
*
* Timer function for accounting updates
*/
void
AuthAccountTimeout(void *arg)
{
Link l = (Link) arg;
Log(LG_AUTH2, ("[%s] ACCT: Time for Accounting Update",
l->name));
AuthAccountStart(l, AUTH_ACCT_UPDATE);
}
/*
* AuthAccount()
*
* Asynchr. accounting handler, called from a paction.
* NOTE: Thread safety is needed here
*/
static void
AuthAccount(void *arg)
{
AuthData const auth = (AuthData) arg;
int err = 0;
Log(LG_AUTH2, ("[%s] ACCT: Thread started", auth->info.lnkname));
#ifdef USE_RADIUS
if (Enabled(&auth->conf.options, AUTH_CONF_RADIUS_ACCT))
err |= RadiusAccount(auth);
#endif
#ifdef USE_PAM
if (Enabled(&auth->conf.options, AUTH_CONF_PAM_ACCT))
err |= AuthPAMAcct(auth);
#endif
#ifdef USE_SYSTEM
if (Enabled(&auth->conf.options, AUTH_CONF_SYSTEM_ACCT))
err |= AuthSystemAcct(auth);
#endif
if (Enabled(&auth->conf.options, AUTH_CONF_EXT_ACCT))
err |= AuthExternalAcct(auth);
if (err != 0 && auth->acct_type == AUTH_ACCT_START &&
Enabled(&auth->conf.options, AUTH_CONF_ACCT_MANDATORY)) {
Log(LG_AUTH, ("[%s] ACCT: Close link due to accounting start error",
auth->info.lnkname));
auth->drop_user = 1;
}
}
/*
* AuthAccountFinish
*
* Return point for the accounting thread()
*/
static void
AuthAccountFinish(void *arg, int was_canceled)
{
AuthData auth = (AuthData) arg;
Link l;
if (was_canceled) {
Log(LG_AUTH2, ("[%s] ACCT: Thread was canceled",
auth->info.lnkname));
} else {
Log(LG_AUTH2, ("[%s] ACCT: Thread finished normally",
auth->info.lnkname));
}
#ifdef USE_RADIUS
/* Cleanup */
RadiusClose(auth);
#endif
if (was_canceled) {
AuthDataDestroy(auth);
return;
}
l = gLinks[auth->info.linkID];
if (l == NULL) {
AuthDataDestroy(auth);
return;
}
if (auth->drop_user && auth->acct_type != AUTH_ACCT_STOP) {
Log(LG_AUTH, ("[%s] ACCT: Link close requested by the accounting",
l->name));
RecordLinkUpDownReason(NULL, l, 0, STR_MANUALLY, NULL);
LinkClose(l);
}
AuthDataDestroy(auth);
LinkShutdownCheck(l, l->lcp.fsm.state);
}
/*
* AuthGetData()
*
* NOTE: Thread safety is needed here
*/
int
AuthGetData(char *authname, char *password, size_t passlen,
struct u_range *range, u_char *range_valid)
{
FILE *fp;
int ac;
char *av[20];
char *line;
/* Check authname, must be non-empty */
if (authname == NULL || authname[0] == 0) {
return (-1);
}
/* Search secrets file */
if ((fp = OpenConfFile(SECRET_FILE, NULL)) == NULL)
return (-1);
while ((line = ReadFullLine(fp, NULL, NULL, 0)) != NULL) {
memset(av, 0, sizeof(av));
ac = ParseLine(line, av, sizeof(av) / sizeof(*av), 1);
Freee(line);
if (ac >= 2
&& (strcmp(av[0], authname) == 0
|| (av[1][0] == '!' && strcmp(av[0], "*") == 0))) {
if (av[1][0] == '!') { /* external auth program */
if (AuthGetExternalPassword((av[1] + 1),
authname, password, passlen) == -1) {
FreeArgs(ac, av);
fclose(fp);
return (-1);
}
} else {
strlcpy(password, av[1], passlen);
}
if (range != NULL && range_valid != NULL) {
u_rangeclear(range);
if (ac >= 3)
*range_valid = ParseRange(av[2], range, ALLOW_IPV4);
else
*range_valid = FALSE;
}
FreeArgs(ac, av);
fclose(fp);
return (0);
}
FreeArgs(ac, av);
}
fclose(fp);
return (-1); /* Invalid */
}
/*
* AuthAsyncStart()
*
* Starts the Auth-Thread
*/
void
AuthAsyncStart(Link l, AuthData auth)
{
Auth const a = &l->lcp.auth;
const char *rept;
/* Check link action */
rept = LinkMatchAction(l, 2, auth->params.authname);
if (rept) {
if (strcmp(rept, "##DROP##") == 0) {
/* Action told we must drop this connection */
Log(LG_AUTH, ("[%s] Drop connection", l->name));
PhysClose(l);
AuthDataDestroy(auth);
return;
}
/* Action told we must forward this connection */
if (RepCreate(l, rept)) {
Log(LG_ERR, ("[%s] Repeater to \"%s\" creation error", l->name, rept));
PhysClose(l);
AuthDataDestroy(auth);
return;
}
/* Create repeater */
RepIncoming(l);
/* Reconnect link netgraph hook to repeater */
LinkNgToRep(l);
/* Kill the LCP */
LcpDown(l);
LcpClose(l);
AuthDataDestroy(auth);
return;
}
/* Check if we are ready to process request. */
if (a->thread) {
auth->status = AUTH_STATUS_BUSY;
auth->finish(l, auth);
return;
}
/* perform pre authentication checks (single-login, etc.) */
if (AuthPreChecks(auth) < 0) {
Log(LG_AUTH, ("[%s] AUTH: AuthPreCheck failed for \"%s\"",
l->name, auth->params.authname));
auth->finish(l, auth);
return;
}
if (paction_start(&a->thread, &gGiantMutex, AuthAsync,
AuthAsyncFinish, auth) == -1) {
Perror("[%s] AUTH: Couldn't start thread", l->name);
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_NOT_EXPECTED;
auth->finish(l, auth);
}
}
/*
* AuthAsync()
*
* Asynchr. auth handler, called from a paction.
* NOTE: Thread safety is needed here
*/
static void
AuthAsync(void *arg)
{
AuthData const auth = (AuthData) arg;
Log(LG_AUTH2, ("[%s] AUTH: Thread started", auth->info.lnkname));
if (Enabled(&auth->conf.options, AUTH_CONF_EXT_AUTH)) {
auth->params.authentic = AUTH_CONF_EXT_AUTH;
Log(LG_AUTH, ("[%s] AUTH: Trying EXTERNAL", auth->info.lnkname));
if (AuthExternal(auth)) {
Log(LG_ERR | LG_AUTH, ("[%s] AUTH: EXTERNAL returned error",
auth->info.lnkname));
} else {
Log(LG_AUTH, ("[%s] AUTH: EXTERNAL returned: %s",
auth->info.lnkname, AuthStatusText(auth->status)));
if (auth->status == AUTH_STATUS_SUCCESS
|| auth->status == AUTH_STATUS_UNDEF)
return;
}
}
#ifdef USE_RADIUS
if (auth->proto == PROTO_EAP && auth->eap_radius) {
auth->params.authentic = AUTH_CONF_RADIUS_AUTH;
RadiusEapProxy(auth);
return;
} else if (Enabled(&auth->conf.options, AUTH_CONF_RADIUS_AUTH)) {
auth->params.authentic = AUTH_CONF_RADIUS_AUTH;
Log(LG_AUTH, ("[%s] AUTH: Trying RADIUS", auth->info.lnkname));
if (RadiusAuthenticate(auth)) {
Log(LG_ERR | LG_AUTH, ("[%s] AUTH: RADIUS returned error",
auth->info.lnkname));
} else {
Log(LG_AUTH, ("[%s] AUTH: RADIUS returned: %s",
auth->info.lnkname, AuthStatusText(auth->status)));
if (auth->status == AUTH_STATUS_SUCCESS)
return;
}
}
#endif
#ifdef USE_PAM
if (Enabled(&auth->conf.options, AUTH_CONF_PAM_AUTH)) {
auth->params.authentic = AUTH_CONF_PAM_AUTH;
Log(LG_AUTH, ("[%s] AUTH: Trying PAM", auth->info.lnkname));
AuthPAM(auth);
Log(LG_AUTH, ("[%s] AUTH: PAM returned: %s",
auth->info.lnkname, AuthStatusText(auth->status)));
if (auth->status == AUTH_STATUS_SUCCESS
|| auth->status == AUTH_STATUS_UNDEF)
return;
}
#endif
#ifdef USE_SYSTEM
if (Enabled(&auth->conf.options, AUTH_CONF_SYSTEM_AUTH)) {
auth->params.authentic = AUTH_CONF_SYSTEM_AUTH;
Log(LG_AUTH, ("[%s] AUTH: Trying SYSTEM", auth->info.lnkname));
AuthSystem(auth);
Log(LG_AUTH, ("[%s] AUTH: SYSTEM returned: %s",
auth->info.lnkname, AuthStatusText(auth->status)));
if (auth->status == AUTH_STATUS_SUCCESS
|| auth->status == AUTH_STATUS_UNDEF)
return;
}
#endif
#ifdef USE_OPIE
if (Enabled(&auth->conf.options, AUTH_CONF_OPIE)) {
auth->params.authentic = AUTH_CONF_OPIE;
Log(LG_AUTH, ("[%s] AUTH: Trying OPIE", auth->info.lnkname));
AuthOpie(auth);
Log(LG_AUTH, ("[%s] AUTH: OPIE returned: %s",
auth->info.lnkname, AuthStatusText(auth->status)));
if (auth->status == AUTH_STATUS_SUCCESS
|| auth->status == AUTH_STATUS_UNDEF)
return;
}
#endif /* USE_OPIE */
if (Enabled(&auth->conf.options, AUTH_CONF_INTERNAL)) {
auth->params.authentic = AUTH_CONF_INTERNAL;
Log(LG_AUTH, ("[%s] AUTH: Trying INTERNAL", auth->info.lnkname));
AuthInternal(auth);
Log(LG_AUTH, ("[%s] AUTH: INTERNAL returned: %s",
auth->info.lnkname, AuthStatusText(auth->status)));
if (auth->status == AUTH_STATUS_SUCCESS
|| auth->status == AUTH_STATUS_UNDEF)
return;
}
Log(LG_AUTH, ("[%s] AUTH: ran out of backends", auth->info.lnkname));
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_INVALID_LOGIN;
}
/*
* AuthAsyncFinish()
*
* Return point for the auth thread
*/
static void
AuthAsyncFinish(void *arg, int was_canceled)
{
AuthData auth = (AuthData) arg;
Link l;
if (was_canceled)
Log(LG_AUTH2, ("[%s] AUTH: Thread was canceled", auth->info.lnkname));
#ifdef USE_RADIUS
/* cleanup */
RadiusClose(auth);
#endif
if (was_canceled) {
AuthDataDestroy(auth);
return;
}
l = gLinks[auth->info.linkID];
if (l == NULL) {
AuthDataDestroy(auth);
return;
}
Log(LG_AUTH2, ("[%s] AUTH: Thread finished normally", l->name));
/* Replace modified data */
authparamsDestroy(&l->lcp.auth.params);
authparamsMove(&auth->params, &l->lcp.auth.params);
if (strcmp(l->lcp.auth.params.action, "drop") == 0) {
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_INVALID_LOGIN;
} else if (strncmp(l->lcp.auth.params.action, "forward ", 8) == 0) {
const char *rept = l->lcp.auth.params.action + 8;
/* Action told we must forward this connection */
if (RepCreate(l, rept)) {
Log(LG_ERR, ("[%s] Repeater to \"%s\" creation error", l->name, rept));
PhysClose(l);
AuthDataDestroy(auth);
return;
}
/* Create repeater */
RepIncoming(l);
/* Reconnect link netgraph hook to repeater */
LinkNgToRep(l);
/* Kill the LCP */
LcpDown(l);
LcpClose(l);
AuthDataDestroy(auth);
return;
}
auth->finish(l, auth);
}
/*
* AuthInternal()
*
* Authenticate against mpd.secret
*/
static void
AuthInternal(AuthData auth)
{
if (AuthGetData(auth->params.authname, auth->params.password,
sizeof(auth->params.password), &auth->params.range,
&auth->params.range_valid) < 0) {
Log(LG_AUTH, ("[%s] AUTH: User \"%s\" not found in secret file",
auth->info.lnkname, auth->params.authname));
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_INVALID_LOGIN;
return;
}
auth->status = AUTH_STATUS_UNDEF;
}
#ifdef USE_SYSTEM
/*
* AuthSystem()
*
* Authenticate against Systems password database
*/
static void
AuthSystem(AuthData auth)
{
PapParams pp = &auth->params.pap;
struct passwd *pw;
struct passwd pwc;
u_char *bin;
int err;
/*
* protect getpwnam and errno NOTE: getpwnam_r doesen't exists on
* FreeBSD < 5.1
*/
GIANT_MUTEX_LOCK();
errno = 0;
pw = getpwnam(auth->params.authname);
if (!pw) {
err = errno;
GIANT_MUTEX_UNLOCK(); /* We must release lock before Log() */
if (err)
Perror("[%s] AUTH: Error retrieving passwd", auth->info.lnkname);
else
Log(LG_AUTH, ("[%s] AUTH: User \"%s\" not found in the systems database",
auth->info.lnkname, auth->params.authname));
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_INVALID_LOGIN;
return;
}
memcpy(&pwc, pw, sizeof(struct passwd)); /* we must make copy
* before release lock */
GIANT_MUTEX_UNLOCK();
Log(LG_AUTH, ("[%s] AUTH: Found user %s Uid:%d Gid:%d Fmt:%*.*s",
auth->info.lnkname, pwc.pw_name, pwc.pw_uid, pwc.pw_gid, 3, 3, pwc.pw_passwd));
if (auth->proto == PROTO_PAP) {
/* protect non-ts crypt() */
GIANT_MUTEX_LOCK();
if (strcmp(crypt(pp->peer_pass, pwc.pw_passwd), pwc.pw_passwd) == 0) {
auth->status = AUTH_STATUS_SUCCESS;
} else {
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_INVALID_LOGIN;
}
GIANT_MUTEX_UNLOCK();
return;
} else if (auth->proto == PROTO_CHAP
&& (auth->alg == CHAP_ALG_MSOFT
|| auth->alg == CHAP_ALG_MSOFTv2)) {
if (!strstr(pwc.pw_passwd, "$3$$")) {
Log(LG_AUTH, ("[%s] AUTH: Password has the wrong format, nth ($3$) is needed",
auth->info.lnkname));
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_INVALID_LOGIN;
return;
}
bin = Hex2Bin(&pwc.pw_passwd[4]);
memcpy(auth->params.msoft.nt_hash, bin, sizeof(auth->params.msoft.nt_hash));
Freee(bin);
NTPasswordHashHash(auth->params.msoft.nt_hash, auth->params.msoft.nt_hash_hash);
auth->params.msoft.has_nt_hash = TRUE;
auth->status = AUTH_STATUS_UNDEF;
return;
} else {
Log(LG_ERR, ("[%s] AUTH: Using systems password database only possible for PAP and MS-CHAP",
auth->info.lnkname));
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_NOT_EXPECTED;
return;
}
}
/*
* AuthSystemAcct()
*
* Account with system
*/
#if __FreeBSD_version >= 900007
static int
AuthSystemAcct(AuthData auth)
{
struct utmpx ut;
memset(&ut, 0, sizeof(ut));
snprintf(ut.ut_id, sizeof(ut.ut_id), "mpd%x", auth->info.linkID);
strlcpy(ut.ut_line, auth->info.lnkname, sizeof(ut.ut_line));
if (auth->acct_type == AUTH_ACCT_START) {
ut.ut_type = USER_PROCESS;
strlcpy(ut.ut_host, auth->params.peeraddr, sizeof(ut.ut_host));
strlcpy(ut.ut_user, auth->params.authname, sizeof(ut.ut_user));
gettimeofday(&ut.ut_tv, NULL);
Log(LG_AUTH, ("[%s] ACCT: wtmp %s %s %s login", auth->info.lnkname, ut.ut_line,
ut.ut_user, ut.ut_host));
pututxline(&ut);
} else if (auth->acct_type == AUTH_ACCT_STOP) {
ut.ut_type = DEAD_PROCESS;
Log(LG_AUTH, ("[%s] ACCT: wtmp %s logout", auth->info.lnkname, ut.ut_line));
pututxline(&ut);
}
return (0);
}
#else
static int
AuthSystemAcct(AuthData auth)
{
struct utmp ut;
memset(&ut, 0, sizeof(ut));
strlcpy(ut.ut_line, auth->info.lnkname, sizeof(ut.ut_line));
if (auth->acct_type == AUTH_ACCT_START) {
time_t t;
strlcpy(ut.ut_host, auth->params.peeraddr, sizeof(ut.ut_host));
strlcpy(ut.ut_name, auth->params.authname, sizeof(ut.ut_name));
time(&t);
ut.ut_time = t;
login(&ut);
Log(LG_AUTH, ("[%s] ACCT: wtmp %s %s %s login", auth->info.lnkname, ut.ut_line,
ut.ut_name, ut.ut_host));
} else if (auth->acct_type == AUTH_ACCT_STOP) {
Log(LG_AUTH, ("[%s] ACCT: wtmp %s logout", auth->info.lnkname, ut.ut_line));
logout(ut.ut_line);
logwtmp(ut.ut_line, "", "");
}
return (0);
}
#endif /* __FreeBSD_version >= 900007 */
#endif /* USE_SYSTEM */
#ifdef USE_PAM
/*
* AuthPAM()
*
* Authenticate with PAM system
*/
static int
pam_conv(int n, const struct pam_message **msg, struct pam_response **resp,
void *data)
{
AuthData auth = (AuthData) data;
int i;
for (i = 0; i < n; i++) {
Log(LG_AUTH2, ("[%s] AUTH: PAM: %s",
auth->info.lnkname, msg[i]->msg));
}
/* We support only requests for password */
if (n != 1 || msg[0]->msg_style != PAM_PROMPT_ECHO_OFF)
return (PAM_CONV_ERR);
if ((*resp = malloc(sizeof(struct pam_response))) == NULL)
return (PAM_CONV_ERR);
(*resp)[0].resp = strdup(auth->params.pap.peer_pass);
(*resp)[0].resp_retcode = 0;
return ((*resp)[0].resp != NULL ? PAM_SUCCESS : PAM_CONV_ERR);
}
static void
AuthPAM(AuthData auth)
{
struct pam_conv pamc = {
&pam_conv,
auth
};
pam_handle_t *pamh;
int status;
if (auth->proto != PROTO_PAP) {
Log(LG_ERR, ("[%s] AUTH: Using PAM only possible for PAP", auth->info.lnkname));
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_NOT_EXPECTED;
return;
}
if (pam_start(gPamService, auth->params.authname, &pamc, &pamh) != PAM_SUCCESS) {
Log(LG_ERR, ("[%s] AUTH: PAM error", auth->info.lnkname));
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_NOT_EXPECTED;
return;
}
if (auth->params.peeraddr[0] &&
pam_set_item(pamh, PAM_RHOST, auth->params.peeraddr) != PAM_SUCCESS) {
Log(LG_ERR, ("[%s] AUTH: PAM set PAM_RHOST error", auth->info.lnkname));
}
if (pam_set_item(pamh, PAM_TTY, auth->info.lnkname) != PAM_SUCCESS) {
Log(LG_ERR, ("[%s] AUTH: PAM set PAM_TTY error", auth->info.lnkname));
}
status = pam_authenticate(pamh, 0);
if (status == PAM_SUCCESS) {
status = pam_acct_mgmt(pamh, 0);
}
if (status == PAM_SUCCESS) {
auth->status = AUTH_STATUS_SUCCESS;
} else {
Log(LG_AUTH, ("[%s] AUTH: PAM error: %s",
auth->info.lnkname, pam_strerror(pamh, status)));
switch (status) {
case PAM_AUTH_ERR:
case PAM_USER_UNKNOWN:
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_INVALID_LOGIN;
break;
case PAM_ACCT_EXPIRED:
case PAM_AUTHTOK_EXPIRED:
case PAM_CRED_EXPIRED:
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_ACCT_DISABLED;
break;
default:
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_NOT_EXPECTED;
}
}
pam_end(pamh, status);
}
/*
* AuthPAMAcct()
*
* Account with system
*/
static int
AuthPAMAcct(AuthData auth)
{
pam_handle_t *pamh;
int status;
struct pam_conv pamc = {
&pam_conv,
auth
};
if (auth->acct_type != AUTH_ACCT_START &&
auth->acct_type != AUTH_ACCT_STOP) {
return (0);
}
if (pam_start(gPamService, auth->params.authname, &pamc, &pamh) != PAM_SUCCESS) {
Log(LG_ERR, ("[%s] ACCT: PAM error", auth->info.lnkname));
return (-1);
}
if (auth->params.peeraddr[0] &&
pam_set_item(pamh, PAM_RHOST, auth->params.peeraddr) != PAM_SUCCESS) {
Log(LG_ERR, ("[%s] ACCT: PAM set PAM_RHOST error", auth->info.lnkname));
return (-1);
}
if (pam_set_item(pamh, PAM_TTY, auth->info.lnkname) != PAM_SUCCESS) {
Log(LG_ERR, ("[%s] ACCT: PAM set PAM_TTY error", auth->info.lnkname));
return (-1);
}
if (auth->acct_type == AUTH_ACCT_START) {
Log(LG_AUTH, ("[%s] ACCT: PAM open session \"%s\"",
auth->info.lnkname, auth->params.authname));
status = pam_open_session(pamh, 0);
} else {
Log(LG_AUTH, ("[%s] ACCT: PAM close session \"%s\"",
auth->info.lnkname, auth->params.authname));
status = pam_close_session(pamh, 0);
}
if (status != PAM_SUCCESS) {
Log(LG_AUTH, ("[%s] ACCT: PAM session error",
auth->info.lnkname));
return (-1);
}
pam_end(pamh, status);
return (0);
}
#endif /* USE_PAM */
#ifdef USE_OPIE
/*
* AuthOpie()
*/
static void
AuthOpie(AuthData auth)
{
PapParams const pp = &auth->params.pap;
struct opie_otpkey key;
char opieprompt[OPIE_CHALLENGE_MAX + 1];
int ret, n;
char secret[OPIE_SECRET_MAX + 1];
char english[OPIE_RESPONSE_MAX + 1];
ret = opiechallenge(&auth->opie.data, auth->params.authname, opieprompt);
auth->status = AUTH_STATUS_UNDEF;
switch (ret) {
case 0:
break;
case 1:
Log(LG_ERR, ("[%s] AUTH: User \"%s\" not found in opiekeys",
auth->info.lnkname, auth->params.authname));
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_INVALID_LOGIN;
return;
case -1:
case 2:
default:
Log(LG_ERR, ("[%s] AUTH: System error", auth->info.lnkname));
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_NOT_EXPECTED;
return;
};
Log(LG_AUTH, ("[%s] AUTH: Opieprompt:%s", auth->info.lnkname, opieprompt));
if (auth->proto == PROTO_PAP) {
if (!opieverify(&auth->opie.data, pp->peer_pass)) {
auth->status = AUTH_STATUS_SUCCESS;
} else {
auth->why_fail = AUTH_FAIL_INVALID_LOGIN;
auth->status = AUTH_STATUS_FAIL;
}
return;
}
if (AuthGetData(auth->params.authname, secret, sizeof(secret), NULL, NULL) < 0) {
Log(LG_AUTH, ("[%s] AUTH: Can't get credentials for \"%s\"",
auth->info.lnkname, auth->params.authname));
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_INVALID_LOGIN;
return;
}
opiekeycrunch(OPIE_ALG_MD5, &key, auth->opie.data.opie_seed, secret);
n = auth->opie.data.opie_n - 1;
while (n-- > 0)
opiehash(&key, OPIE_ALG_MD5);
opiebtoe(english, &key);
strlcpy(auth->params.password, english, sizeof(auth->params.password));
}
#endif /* USE_OPIE */
/*
* AuthPreChecks()
*/
static int
AuthPreChecks(AuthData auth)
{
if (!strlen(auth->params.authname)) {
Log(LG_AUTH, ("[%s] AUTH: We don't accept empty usernames", auth->info.lnkname));
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_INVALID_LOGIN;
return (-1);
}
/* check max. number of logins */
if (gMaxLogins != 0) {
int ac;
u_long num = 0;
for (ac = 0; ac < gNumBundles; ac++) {
if (gBundles[ac] && gBundles[ac]->open) {
if (gMaxLoginsCI) {
if (!strcasecmp(gBundles[ac]->params.authname, auth->params.authname))
num++;
} else {
if (!strcmp(gBundles[ac]->params.authname, auth->params.authname))
num++;
}
}
}
if (num >= gMaxLogins) {
Log(LG_ERR | LG_AUTH, ("[%s] AUTH: Name: \"%s\" max. number of logins exceeded",
auth->info.lnkname, auth->params.authname));
auth->status = AUTH_STATUS_FAIL;
auth->why_fail = AUTH_FAIL_INVALID_LOGIN;
return (-1);
}
}
return (0);
}
/*
* AuthTimeout()
*
* Timer expired for the whole authorization process
*/
static void
AuthTimeout(void *arg)
{
Link l = (Link) arg;
Log(LG_AUTH, ("[%s] %s: authorization timer expired", Pref(&l->lcp.fsm), Fsm(&l->lcp.fsm)));
AuthStop(l);
LcpAuthResult(l, FALSE);
}
/*
* AuthFailMsg()
*/
const char *
AuthFailMsg(AuthData auth, char *buf, size_t len)
{
const char *mesg;
if (auth->proto == PROTO_CHAP
&& (auth->alg == CHAP_ALG_MSOFT || auth->alg == CHAP_ALG_MSOFTv2)) {
int mscode;
if (auth->mschap_error != NULL) {
strlcpy(buf, auth->mschap_error, len);
return (buf);
}
switch (auth->why_fail) {
case AUTH_FAIL_ACCT_DISABLED:
mscode = MSCHAP_ERROR_ACCT_DISABLED;
mesg = AUTH_MSG_ACCT_DISAB;
break;
case AUTH_FAIL_NO_PERMISSION:
mscode = MSCHAP_ERROR_NO_DIALIN_PERMISSION;
mesg = AUTH_MSG_NOT_ALLOWED;
break;
case AUTH_FAIL_RESTRICTED_HOURS:
mscode = MSCHAP_ERROR_RESTRICTED_LOGON_HOURS;
mesg = AUTH_MSG_RESTR_HOURS;
break;
case AUTH_FAIL_INVALID_PACKET:
case AUTH_FAIL_INVALID_LOGIN:
case AUTH_FAIL_NOT_EXPECTED:
default:
mscode = MSCHAP_ERROR_AUTHENTICATION_FAILURE;
mesg = AUTH_MSG_INVALID;
break;
}
/* If we have reply message, send it instead of default. */
if (auth->reply_message != NULL)
mesg = auth->reply_message;
snprintf(buf, len, "E=%d R=0 M=%s", mscode, mesg);
} else {
if (auth->reply_message != NULL) {
strlcpy(buf, auth->reply_message, len);
return (buf);
}
switch (auth->why_fail) {
case AUTH_FAIL_ACCT_DISABLED:
mesg = AUTH_MSG_ACCT_DISAB;
break;
case AUTH_FAIL_NO_PERMISSION:
mesg = AUTH_MSG_NOT_ALLOWED;
break;
case AUTH_FAIL_RESTRICTED_HOURS:
mesg = AUTH_MSG_RESTR_HOURS;
break;
case AUTH_FAIL_NOT_EXPECTED:
mesg = AUTH_MSG_NOT_EXPECTED;
break;
case AUTH_FAIL_INVALID_PACKET:
mesg = AUTH_MSG_BAD_PACKET;
break;
case AUTH_FAIL_INVALID_LOGIN:
default:
mesg = AUTH_MSG_INVALID;
break;
}
strlcpy(buf, mesg, len);
}
return (buf);
}
/*
* AuthStatusText()
*/
const char *
AuthStatusText(int status)
{
switch (status) {
case AUTH_STATUS_UNDEF:
return "undefined";
case AUTH_STATUS_SUCCESS:
return "authenticated";
case AUTH_STATUS_FAIL:
return "failed";
case AUTH_STATUS_BUSY:
return "busy";
default:
return "INCORRECT STATUS";
}
}
/*
* AuthMPPEPolicyname()
*/
const char *
AuthMPPEPolicyname(int policy)
{
switch (policy) {
case MPPE_POLICY_ALLOWED:
return "Allowed";
case MPPE_POLICY_REQUIRED:
return "Required";
case MPPE_POLICY_NONE:
return "Not available";
default:
return "Unknown Policy";
}
}
/*
* AuthMPPETypesname()
*/
const char *
AuthMPPETypesname(int types, char *buf, size_t len)
{
if (types == 0) {
strlcpy(buf, "no encryption required", len);
return (buf);
}
buf[0] = 0;
if (types & MPPE_TYPE_40BIT)
strlcpy(buf, "40 ", len);
if (types & MPPE_TYPE_56BIT)
strlcat(buf, "56 ", len);
if (types & MPPE_TYPE_128BIT)
strlcat(buf, "128 ", len);
if (strlen(buf) == 0) {
strlcpy(buf, "unknown types", len);
} else {
strlcat(buf, "bit", len);
}
return (buf);
}
/*
* AuthGetExternalPassword()
*
* Run the named external program to fill in the password for the user
* mentioned in the AuthData
* -1 on error (can't fork, no data read, whatever)
*/
static int
AuthGetExternalPassword(const char *extcmd, char *authname, char *password, size_t passlen)
{
char cmd[AUTH_MAX_PASSWORD + 5 + AUTH_MAX_AUTHNAME];
int ok = 0;
FILE *fp;
int len;
snprintf(cmd, sizeof(cmd), "%s %s", extcmd, authname);
Log(LG_AUTH, ("Invoking external auth program: '%s'", cmd));
if ((fp = popen(cmd, "r")) == NULL) {
Perror("Popen");
return (-1);
}
if (fgets(password, passlen, fp) != NULL) {
len = strlen(password); /* trim trailing newline */
if (len > 0 && password[len - 1] == '\n')
password[len - 1] = '\0';
ok = (password[0] != '\0');
} else {
if (ferror(fp))
Perror("Error reading from external auth program");
}
if (!ok)
Log(LG_AUTH, ("External auth program failed for user \"%s\"",
authname));
pclose(fp);
return (ok ? 0 : -1);
}
/*
* AuthCode()
*/
static const char *
AuthCode(int proto, u_char code, char *buf, size_t len)
{
switch (proto) {
#ifdef USE_RADIUS
case PROTO_EAP:
return EapCode(code, buf, len);
#endif
case PROTO_CHAP:
return ChapCode(code, buf, len);
case PROTO_PAP:
return PapCode(code, buf, len);
default:
snprintf(buf, len, "code %d", code);
return (buf);
}
}
/*
* AuthSetCommand()
*/
static int
AuthSetCommand(Context ctx, int ac, const char *const av[], const void *arg)
{
AuthConf const autc = &ctx->lnk->lcp.auth.conf;
int val;
if (ac == 0)
return (-1);
switch ((intptr_t)arg) {
case SET_AUTHNAME:
strlcpy(autc->authname, *av, sizeof(autc->authname));
break;
case SET_PASSWORD:
strlcpy(autc->password, *av, sizeof(autc->password));
break;
case SET_EXTAUTH_SCRIPT:
Freee(autc->extauth_script);
autc->extauth_script = Mstrdup(MB_AUTH, *av);
break;
case SET_EXTACCT_SCRIPT:
Freee(autc->extacct_script);
autc->extacct_script = Mstrdup(MB_AUTH, *av);
break;
case SET_MAX_LOGINS:
gMaxLogins = (unsigned)atoi(av[0]);
if (ac >= 2 && strcasecmp(av[1], "ci") == 0) {
gMaxLoginsCI = 1;
} else {
gMaxLoginsCI = 0;
}
break;
case SET_ACCT_UPDATE:
val = atoi(*av);
if (val < 0)
Error("Update interval must be positive.");
else
autc->acct_update = val;
break;
case SET_ACCT_UPDATE_LIMIT_IN:
case SET_ACCT_UPDATE_LIMIT_OUT:
val = atoi(*av);
if (val < 0)
Error("Update suppression limit must be positive.");
else {
if ((intptr_t)arg == SET_ACCT_UPDATE_LIMIT_IN)
autc->acct_update_lim_recv = val;
else
autc->acct_update_lim_xmit = val;
}
break;
case SET_TIMEOUT:
val = atoi(*av);
if (val <= 20)
Error("Authorization timeout must be greater then 20.");
else
autc->timeout = val;
break;
case SET_ACCEPT:
AcceptCommand(ac, av, &autc->options, gConfList);
break;
case SET_DENY:
DenyCommand(ac, av, &autc->options, gConfList);
break;
case SET_ENABLE:
EnableCommand(ac, av, &autc->options, gConfList);
break;
case SET_DISABLE:
DisableCommand(ac, av, &autc->options, gConfList);
break;
case SET_YES:
YesCommand(ac, av, &autc->options, gConfList);
break;
case SET_NO:
NoCommand(ac, av, &autc->options, gConfList);
break;
default:
assert(0);
}
return (0);
}
/*
* AuthExternal()
*
* Authenticate via call external script extauth-script
*/
static int
AuthExternal(AuthData auth)
{
char line[256];
FILE *fp;
char *attr, *val;
int len;
if (!auth->conf.extauth_script || !auth->conf.extauth_script[0]) {
Log(LG_ERR, ("[%s] Ext-auth: Script not specified!",
auth->info.lnkname));
return (-1);
}
if (strchr(auth->params.authname, '\'') ||
strchr(auth->params.authname, '\n')) {
Log(LG_ERR, ("[%s] Ext-auth: Denied character in USER_NAME!",
auth->info.lnkname));
return (-1);
}
snprintf(line, sizeof(line), "%s '%s'",
auth->conf.extauth_script, auth->params.authname);
Log(LG_AUTH, ("[%s] Ext-auth: Invoking auth program: '%s'",
auth->info.lnkname, line));
if ((fp = popen(line, "r+")) == NULL) {
Perror("Popen");
return (-1);
}
/* SENDING REQUEST */
fprintf(fp, "USER_NAME:%s\n", auth->params.authname);
fprintf(fp, "AUTH_TYPE:%s", ProtoName(auth->proto));
if (auth->proto == PROTO_CHAP) {
switch (auth->alg) {
case CHAP_ALG_MD5:
fprintf(fp, " MD5\n");
break;
case CHAP_ALG_MSOFT:
fprintf(fp, " MSOFT\n");
break;
case CHAP_ALG_MSOFTv2:
fprintf(fp, " MSOFTv2\n");
break;
default:
fprintf(fp, " 0x%02x\n", auth->alg);
break;
}
} else
fprintf(fp, "\n");
if (auth->proto == PROTO_PAP)
fprintf(fp, "USER_PASSWORD:%s\n", auth->params.pap.peer_pass);
fprintf(fp, "ACCT_SESSION_ID:%s\n", auth->info.session_id);
fprintf(fp, "LINK:%s\n", auth->info.lnkname);
fprintf(fp, "NAS_PORT:%d\n", auth->info.linkID);
fprintf(fp, "NAS_PORT_TYPE:%s\n", auth->info.phys_type->name);
fprintf(fp, "CALLING_STATION_ID:%s\n", auth->params.callingnum);
fprintf(fp, "CALLED_STATION_ID:%s\n", auth->params.callednum);
fprintf(fp, "SELF_NAME:%s\n", auth->params.selfname);
fprintf(fp, "PEER_NAME:%s\n", auth->params.peername);
fprintf(fp, "SELF_ADDR:%s\n", auth->params.selfaddr);
fprintf(fp, "PEER_ADDR:%s\n", auth->params.peeraddr);
fprintf(fp, "PEER_PORT:%s\n", auth->params.peerport);
fprintf(fp, "PEER_MAC_ADDR:%s\n", auth->params.peermacaddr);
fprintf(fp, "PEER_IFACE:%s\n", auth->params.peeriface);
fprintf(fp, "PEER_IDENT:%s\n", auth->info.peer_ident);
/* REQUEST DONE */
fprintf(fp, "\n");
/* REPLY PROCESSING */
auth->status = AUTH_STATUS_FAIL;
while (fgets(line, sizeof(line), fp)) {
/* trim trailing newline */
len = strlen(line);
if (len > 0 && line[len - 1] == '\n') {
line[len - 1] = '\0';
len--;
}
/* Empty line is the end marker */
if (len == 0)
break;
/* split line on attr:value */
val = line;
attr = strsep(&val, ":");
/* Log data w/o password */
if (strcmp(attr, "USER_PASSWORD") != 0) {
Log(LG_AUTH2, ("[%s] Ext-auth: attr:'%s', value:'%s'",
auth->info.lnkname, attr, val));
} else {
Log(LG_AUTH2, ("[%s] Ext-auth: attr:'%s', value:'XXX'",
auth->info.lnkname, attr));
}
if (strcmp(attr, "RESULT") == 0) {
if (strcmp(val, "SUCCESS") == 0) {
auth->status = AUTH_STATUS_SUCCESS;
} else if (strcmp(val, "UNDEF") == 0) {
auth->status = AUTH_STATUS_UNDEF;
} else
auth->status = AUTH_STATUS_FAIL;
} else if (strcmp(attr, "USER_NAME") == 0) {
strlcpy(auth->params.authname, val, sizeof(auth->params.authname));
} else if (strcmp(attr, "USER_PASSWORD") == 0) {
strlcpy(auth->params.password, val, sizeof(auth->params.password));
} else if (strcmp(attr, "USER_NT_HASH") == 0) {
if (strlen(val) != 32) {
Log(LG_AUTH, ("[%s] Ext-auth: Incorrect USER_NT_HASH length", auth->info.lnkname));
} else {
u_char *bin = Hex2Bin(val);
memcpy(auth->params.msoft.nt_hash, bin, sizeof(auth->params.msoft.nt_hash));
Freee(bin);
NTPasswordHashHash(auth->params.msoft.nt_hash, auth->params.msoft.nt_hash_hash);
auth->params.msoft.has_nt_hash = TRUE;
}
} else if (strcmp(attr, "USER_LM_HASH") == 0) {
if (strlen(val) != 32) {
Log(LG_AUTH, ("[%s] Ext-auth: Incorrect USER_LM_HASH length", auth->info.lnkname));
} else {
u_char *bin = Hex2Bin(val);
memcpy(auth->params.msoft.lm_hash, bin, sizeof(auth->params.msoft.lm_hash));
Freee(bin);
auth->params.msoft.has_lm_hash = TRUE;
}
} else if (strcmp(attr, "FRAMED_IP_ADDRESS") == 0) {
auth->params.range_valid =
ParseRange(val, &auth->params.range, ALLOW_IPV4);
} else if (strcmp(attr, "PRIMARY_DNS_SERVER") == 0) {
inet_pton(AF_INET, val, &auth->params.peer_dns[0]);
} else if (strcmp(attr, "SECONDARY_DNS_SERVER") == 0) {
inet_pton(AF_INET, val, &auth->params.peer_dns[1]);
} else if (strcmp(attr, "PRIMARY_NBNS_SERVER") == 0) {
inet_pton(AF_INET, val, &auth->params.peer_nbns[0]);
} else if (strcmp(attr, "SECONDARY_NBNS_SERVER") == 0) {
inet_pton(AF_INET, val, &auth->params.peer_nbns[1]);
} else if (strcmp(attr, "FRAMED_ROUTE") == 0) {
struct u_range range;
if (!ParseRange(val, &range, ALLOW_IPV4)) {
Log(LG_ERR | LG_AUTH, ("[%s] Ext-auth: FRAMED_ROUTE: Bad route \"%s\"",
auth->info.lnkname, val));
} else {
struct ifaceroute *r, *r1;
int j;
r = Malloc(MB_AUTH, sizeof(struct ifaceroute));
r->dest = range;
r->ok = 0;
j = 0;
SLIST_FOREACH(r1, &auth->params.routes, next) {
if (!u_rangecompare(&r->dest, &r1->dest)) {
Log(LG_ERR | LG_AUTH, ("[%s] Ext-auth: Duplicate route",
auth->info.lnkname));
j = 1;
}
};
if (j == 0) {
SLIST_INSERT_HEAD(&auth->params.routes, r, next);
} else {
Freee(r);
}
}
} else if (strcmp(attr, "FRAMED_IPV6_ROUTE") == 0) {
struct u_range range;
if (!ParseRange(val, &range, ALLOW_IPV6)) {
Log(LG_ERR | LG_AUTH, ("[%s] Ext-auth: FRAMED_IPV6_ROUTE: Bad route \"%s\"",
auth->info.lnkname, val));
} else {
struct ifaceroute *r, *r1;
int j;
r = Malloc(MB_AUTH, sizeof(struct ifaceroute));
r->dest = range;
r->ok = 0;
j = 0;
SLIST_FOREACH(r1, &auth->params.routes, next) {
if (!u_rangecompare(&r->dest, &r1->dest)) {
Log(LG_ERR | LG_AUTH, ("[%s] Ext-auth: Duplicate route",
auth->info.lnkname));
j = 1;
}
};
if (j == 0) {
SLIST_INSERT_HEAD(&auth->params.routes, r, next);
} else {
Freee(r);
}
}
} else if (strcmp(attr, "SESSION_TIMEOUT") == 0) {
auth->params.session_timeout = atoi(val);
} else if (strcmp(attr, "IDLE_TIMEOUT") == 0) {
auth->params.idle_timeout = atoi(val);
} else if (strcmp(attr, "ACCT_INTERIM_INTERVAL") == 0) {
auth->params.acct_update = atoi(val);
} else if (strcmp(attr, "ACCT_INTERIM_LIM_RECV") == 0) {
auth->params.acct_update_lim_recv = atoi(val);
} else if (strcmp(attr, "ACCT_INTERIM_LIM_XMIT") == 0) {
auth->params.acct_update_lim_xmit = atoi(val);
} else if (strcmp(attr, "FRAMED_MTU") == 0) {
auth->params.mtu = atoi(val);
} else if (strcmp(attr, "FRAMED_COMPRESSION") == 0) {
if (atoi(val) == 1)
auth->params.vjc_enable = 1;
} else if (strcmp(attr, "FRAMED_POOL") == 0) {
strlcpy(auth->params.ippool, val, sizeof(auth->params.ippool));
} else if (strcmp(attr, "REPLY_MESSAGE") == 0) {
Freee(auth->reply_message);
auth->reply_message = Mstrdup(MB_AUTH, val);
} else if (strcmp(attr, "MS_CHAP_ERROR") == 0) {
Freee(auth->mschap_error);
/* "E=%d R=0 M=%s" */
auth->mschap_error = Mstrdup(MB_AUTH, val);
} else if (strcmp(attr, "MPD_ACTION") == 0) {
strlcpy(auth->params.action, val, sizeof(auth->params.action));
} else if (strcmp(attr, "MPD_IFACE_NAME") == 0) {
strlcpy(auth->params.ifname, val, sizeof(auth->params.ifname));
#ifdef SIOCSIFDESCR
} else if (strcmp(attr, "MPD_IFACE_DESCR") == 0) {
Freee(auth->params.ifdescr);
auth->params.ifdescr = Mstrdup(MB_AUTH, val);
#endif /* SIOCSIFDESCR */
#ifdef SIOCAIFGROUP
} else if (strcmp(attr, "MPD_IFACE_GROUP") == 0) {
strlcpy(auth->params.ifgroup, val, sizeof(auth->params.ifgroup));
#endif
#if defined(USE_IPFW) || defined(USE_NG_BPF)
} else if (strncmp(attr, "MPD_", 4) == 0) {
struct acl **acls, *acls1;
char *acl1, *acl2, *acl3;
int i;
acl1 = NULL;
acls = NULL;
#ifdef USE_IPFW
if (strcmp(attr, "MPD_RULE") == 0) {
acl1 = val;
acls = &(auth->params.acl_rule);
} else if (strcmp(attr, "MPD_PIPE") == 0) {
acl1 = val;
acls = &(auth->params.acl_pipe);
} else if (strcmp(attr, "MPD_QUEUE") == 0) {
acl1 = val;
acls = &(auth->params.acl_queue);
} else if (strcmp(attr, "MPD_TABLE") == 0) {
acl1 = val;
acls = &(auth->params.acl_table);
} else if (strcmp(attr, "MPD_TABLE_STATIC") == 0) {
acl1 = val;
acls = &(auth->params.acl_table);
} else
#endif /* USE_IPFW */
#ifdef USE_NG_BPF
if (strcmp(attr, "MPD_FILTER") == 0) {
acl1 = val;
acl2 = strsep(&acl1, "#");
i = atol(acl2);
if (i <= 0 || i > ACL_FILTERS) {
Log(LG_ERR, ("[%s] Ext-auth: wrong filter number: %i",
auth->info.lnkname, i));
continue;
}
acls = &(auth->params.acl_filters[i - 1]);
} else if (strcmp(attr, "MPD_LIMIT") == 0) {
acl1 = val;
acl2 = strsep(&acl1, "#");
if (strcasecmp(acl2, "in") == 0) {
i = 0;
} else if (strcasecmp(acl2, "out") == 0) {
i = 1;
} else {
Log(LG_ERR, ("[%s] Ext-auth: wrong limit direction: '%s'",
auth->info.lnkname, acl2));
continue;
}
acls = &(auth->params.acl_limits[i]);
} else {
Log(LG_ERR, ("[%s] Ext-auth: Dropping MPD vendor specific attribute: '%s'",
auth->info.lnkname, attr));
continue;
}
#endif /* USE_NG_BPF */
if (acl1 == NULL) {
Log(LG_ERR, ("[%s] Ext-auth: incorrect acl!",
auth->info.lnkname));
continue;
}
acl3 = acl1;
strsep(&acl3, "=");
acl2 = acl1;
strsep(&acl2, "#");
i = atol(acl1);
if (i <= 0) {
Log(LG_ERR, ("[%s] Ext-auth: wrong acl number: %i",
auth->info.lnkname, i));
continue;
}
if ((acl3 == NULL) || (acl3[0] == 0)) {
Log(LG_ERR, ("[%s] Ext-auth: wrong acl", auth->info.lnkname));
continue;
}
acls1 = Malloc(MB_AUTH, sizeof(struct acl) + strlen(acl3));
if (strcmp(attr, "MPD_TABLE_STATIC") != 0) {
acls1->number = i;
acls1->real_number = 0;
} else {
acls1->number = 0;
acls1->real_number = i;
}
if (acl2)
strlcpy(acls1->name, acl2, sizeof(acls1->name));
strcpy(acls1->rule, acl3);
while ((*acls != NULL) && ((*acls)->number < acls1->number))
acls = &((*acls)->next);
if (*acls == NULL) {
acls1->next = NULL;
} else if (((*acls)->number == acls1->number) &&
(strcmp(attr, "MPD_TABLE") != 0) &&
(strcmp(attr, "MPD_TABLE_STATIC") != 0)) {
Log(LG_ERR, ("[%s] Ext-auth: duplicate acl",
auth->info.lnkname));
continue;
} else {
acls1->next = *acls;
}
*acls = acls1;
#endif /* USE_IPFW or USE_NG_BPF */
} else {
Log(LG_ERR, ("[%s] Ext-auth: Unknown attr:'%s'",
auth->info.lnkname, attr));
}
}
pclose(fp);
return (0);
}
/*
* AuthExternalAcct()
*
* Accounting via call external script extacct-script
*/
static int
AuthExternalAcct(AuthData auth)
{
char line[256];
FILE *fp;
char *attr, *val;
int len;
if (!auth->conf.extacct_script || !auth->conf.extacct_script[0]) {
Log(LG_ERR, ("[%s] Ext-acct: Script not specified!",
auth->info.lnkname));
return (-1);
}
if (strchr(auth->params.authname, '\'') ||
strchr(auth->params.authname, '\n')) {
Log(LG_ERR, ("[%s] Ext-acct: Denied character in USER_NAME!",
auth->info.lnkname));
return (-1);
}
snprintf(line, sizeof(line), "%s '%s'",
auth->conf.extacct_script, auth->params.authname);
Log(LG_AUTH, ("[%s] Ext-acct: Invoking acct program: '%s'",
auth->info.lnkname, line));
if ((fp = popen(line, "r+")) == NULL) {
Perror("Popen");
return (-1);
}
/* SENDING REQUEST */
fprintf(fp, "ACCT_STATUS_TYPE:%s\n",
(auth->acct_type == AUTH_ACCT_START) ?
"START" : ((auth->acct_type == AUTH_ACCT_STOP) ?
"STOP" : "UPDATE"));
fprintf(fp, "ACCT_SESSION_ID:%s\n", auth->info.session_id);
fprintf(fp, "ACCT_MULTI_SESSION_ID:%s\n", auth->info.msession_id);
fprintf(fp, "USER_NAME:%s\n", auth->params.authname);
fprintf(fp, "IFACE:%s\n", auth->info.ifname);
fprintf(fp, "IFACE_INDEX:%d\n", auth->info.ifindex);
fprintf(fp, "BUNDLE:%s\n", auth->info.bundname);
fprintf(fp, "LINK:%s\n", auth->info.lnkname);
fprintf(fp, "NAS_PORT:%d\n", auth->info.linkID);
fprintf(fp, "NAS_PORT_TYPE:%s\n", auth->info.phys_type->name);
fprintf(fp, "ACCT_LINK_COUNT:%d\n", auth->info.n_links);
fprintf(fp, "CALLING_STATION_ID:%s\n", auth->params.callingnum);
fprintf(fp, "CALLED_STATION_ID:%s\n", auth->params.callednum);
fprintf(fp, "SELF_NAME:%s\n", auth->params.selfname);
fprintf(fp, "PEER_NAME:%s\n", auth->params.peername);
fprintf(fp, "SELF_ADDR:%s\n", auth->params.selfaddr);
fprintf(fp, "PEER_ADDR:%s\n", auth->params.peeraddr);
fprintf(fp, "PEER_PORT:%s\n", auth->params.peerport);
fprintf(fp, "PEER_MAC_ADDR:%s\n", auth->params.peermacaddr);
fprintf(fp, "PEER_IFACE:%s\n", auth->params.peeriface);
fprintf(fp, "PEER_IDENT:%s\n", auth->info.peer_ident);
fprintf(fp, "FRAMED_IP_ADDRESS:%s\n",
inet_ntoa(auth->info.peer_addr));
if (auth->acct_type == AUTH_ACCT_STOP)
fprintf(fp, "ACCT_TERMINATE_CAUSE:%s\n", auth->info.downReason);
if (auth->acct_type != AUTH_ACCT_START) {
#ifdef USE_NG_BPF
struct svcstatrec *ssr;
#endif
fprintf(fp, "ACCT_SESSION_TIME:%ld\n",
(long int)(time(NULL) - auth->info.last_up));
fprintf(fp, "ACCT_INPUT_OCTETS:%llu\n",
(long long unsigned)auth->info.stats.recvOctets);
fprintf(fp, "ACCT_INPUT_PACKETS:%llu\n",
(long long unsigned)auth->info.stats.recvFrames);
fprintf(fp, "ACCT_OUTPUT_OCTETS:%llu\n",
(long long unsigned)auth->info.stats.xmitOctets);
fprintf(fp, "ACCT_OUTPUT_PACKETS:%llu\n",
(long long unsigned)auth->info.stats.xmitFrames);
#ifdef USE_NG_BPF
SLIST_FOREACH(ssr, &auth->info.ss.stat[0], next) {
fprintf(fp, "MPD_INPUT_OCTETS:%s:%llu\n",
ssr->name, (long long unsigned)ssr->Octets);
fprintf(fp, "MPD_INPUT_PACKETS:%s:%llu\n",
ssr->name, (long long unsigned)ssr->Packets);
}
SLIST_FOREACH(ssr, &auth->info.ss.stat[1], next) {
fprintf(fp, "MPD_OUTPUT_OCTETS:%s:%llu\n",
ssr->name, (long long unsigned)ssr->Octets);
fprintf(fp, "MPD_OUTPUT_PACKETS:%s:%llu\n",
ssr->name, (long long unsigned)ssr->Packets);
}
#endif /* USE_NG_BPF */
}
/* REQUEST DONE */
fprintf(fp, "\n");
/* REPLY PROCESSING */
while (fgets(line, sizeof(line), fp)) {
/* trim trailing newline */
len = strlen(line);
if (len > 0 && line[len - 1] == '\n') {
line[len - 1] = '\0';
len--;
}
/* Empty line is the end marker */
if (len == 0)
break;
/* split line on attr:value */
val = line;
attr = strsep(&val, ":");
Log(LG_AUTH2, ("[%s] Ext-acct: attr:'%s', value:'%s'",
auth->info.lnkname, attr, val));
if (strcmp(attr, "MPD_DROP_USER") == 0) {
auth->drop_user = atoi(val);
} else {
Log(LG_ERR, ("[%s] Ext-acct: Unknown attr:'%s'",
auth->info.lnkname, attr));
}
}
pclose(fp);
return (0);
}
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