/*
* rad_accounting: call modules.
*
* The return value of this function isn't actually used right now, so
* it's not entirely clear if it is returning the right things. --Pac.
*/
int rad_accounting(REQUEST *request)
{
int result = RLM_MODULE_OK;
#ifdef WITH_PROXY
#define WAS_PROXIED (request->proxy)
#else
#define WAS_PROXIED (0)
#endif
/*
* Run the modules only once, before proxying.
*/
if (!WAS_PROXIED) {
VALUE_PAIR *vp;
int acct_type = 0;
result = module_preacct(request);
switch (result) {
/*
* The module has a number of OK return codes.
*/
case RLM_MODULE_NOOP:
case RLM_MODULE_OK:
case RLM_MODULE_UPDATED:
break;
/*
* The module handled the request, stop here.
*/
case RLM_MODULE_HANDLED:
return result;
/*
* The module failed, or said the request is
* invalid, therefore we stop here.
*/
case RLM_MODULE_FAIL:
case RLM_MODULE_INVALID:
case RLM_MODULE_NOTFOUND:
case RLM_MODULE_REJECT:
case RLM_MODULE_USERLOCK:
default:
return result;
}
/*
* Do the data storage before proxying. This is to ensure
* that we log the packet, even if the proxy never does.
*/
vp = fr_pair_find_by_num(request->config, PW_ACCT_TYPE, 0, TAG_ANY);
if (vp) {
acct_type = vp->vp_integer;
DEBUG2(" Found Acct-Type %s",
dict_valnamebyattr(PW_ACCT_TYPE, 0, acct_type));
}
result = process_accounting(acct_type, request);
switch (result) {
/*
* In case the accounting module returns FAIL,
* it's still useful to send the data to the
* proxy.
*/
case RLM_MODULE_FAIL:
case RLM_MODULE_NOOP:
case RLM_MODULE_OK:
case RLM_MODULE_UPDATED:
break;
/*
* The module handled the request, don't reply.
*/
case RLM_MODULE_HANDLED:
return result;
/*
* Neither proxy, nor reply to invalid requests.
*/
case RLM_MODULE_INVALID:
case RLM_MODULE_NOTFOUND:
case RLM_MODULE_REJECT:
case RLM_MODULE_USERLOCK:
default:
return result;
}
/*
* Maybe one of the preacct modules has decided
* that a proxy should be used.
*/
if ((vp = fr_pair_find_by_num(request->config, PW_PROXY_TO_REALM, 0, TAG_ANY))) {
REALM *realm;
/*
* Check whether Proxy-To-Realm is
* a LOCAL realm.
*/
realm = realm_find2(vp->vp_strvalue);
if (realm && !realm->acct_pool) {
DEBUG("rad_accounting: Cancelling proxy to realm %s, as it is a LOCAL realm.", realm->name);
fr_pair_delete_by_num(&request->config, PW_PROXY_TO_REALM, 0, TAG_ANY);
} else {
/*
* Don't reply to the NAS now because
* we have to send the proxied packet
* before that.
*/
return result;
}
}
}
#ifdef WITH_PROXY
/*
* We didn't see a reply to the proxied request. Fail.
*/
if (request->proxy && !request->proxy_reply) return RLM_MODULE_FAIL;
#endif
/*
* We get here IF we're not proxying, OR if we've
* received the accounting reply from the end server,
* THEN we can reply to the NAS.
* If the accounting module returns NOOP, the data
* storage did not succeed, so radiusd should not send
* Accounting-Response.
*/
switch (result) {
/*
* Send back an ACK to the NAS.
*/
case RLM_MODULE_OK:
case RLM_MODULE_UPDATED:
request->reply->code = PW_CODE_ACCOUNTING_RESPONSE;
break;
/*
* Failed to log or to proxy the accounting data,
* therefore don't reply to the NAS.
*/
case RLM_MODULE_FAIL:
case RLM_MODULE_INVALID:
case RLM_MODULE_NOOP:
case RLM_MODULE_NOTFOUND:
case RLM_MODULE_REJECT:
case RLM_MODULE_USERLOCK:
default:
break;
}
return result;
}
/*
* Process and reply to an authentication request
*
* The return value of this function isn't actually used right now, so
* it's not entirely clear if it is returning the right things. --Pac.
*/
int rad_authenticate(REQUEST *request)
{
VALUE_PAIR *namepair;
#ifdef WITH_SESSION_MGMT
VALUE_PAIR *check_item;
#endif
VALUE_PAIR *auth_item = NULL;
VALUE_PAIR *module_msg;
VALUE_PAIR *tmp = NULL;
int result;
const char *password;
char autz_retry = 0;
int autz_type = 0;
password = "";
#ifdef WITH_PROXY
/*
* If this request got proxied to another server, we need
* to check whether it authenticated the request or not.
*/
if (request->proxy_reply) {
switch (request->proxy_reply->code) {
/*
* Reply of ACCEPT means accept, thus set Auth-Type
* accordingly.
*/
case PW_AUTHENTICATION_ACK:
tmp = radius_paircreate(request,
&request->config_items,
PW_AUTH_TYPE, PW_TYPE_INTEGER);
if (tmp) tmp->vp_integer = PW_AUTHTYPE_ACCEPT;
#ifdef WITH_POST_PROXY_AUTHORIZE
if (mainconfig.post_proxy_authorize) break;
#endif
goto authenticate;
/*
* Challenges are punted back to the NAS without any
* further processing.
*/
case PW_ACCESS_CHALLENGE:
request->reply->code = PW_ACCESS_CHALLENGE;
return RLM_MODULE_OK;
/*
* ALL other replies mean reject. (this is fail-safe)
*
* Do NOT do any authorization or authentication. They
* are being rejected, so we minimize the amount of work
* done by the server, by rejecting them here.
*/
case PW_AUTHENTICATION_REJECT:
rad_authlog("Login incorrect (Home Server says so)",
request, 0);
request->reply->code = PW_AUTHENTICATION_REJECT;
return RLM_MODULE_REJECT;
default:
rad_authlog("Login incorrect (Home Server failed to respond)",
request, 0);
return RLM_MODULE_REJECT;
}
}
#endif
/*
* Get the username from the request.
*
* Note that namepair MAY be NULL, in which case there
* is no User-Name attribute in the request.
*/
namepair = request->username;
/*
* Look for, and cache, passwords.
*/
if (!request->password) {
request->password = pairfind(request->packet->vps,
PW_USER_PASSWORD);
}
/*
* Discover which password we want to use.
*/
auth_item = request->password;
if (auth_item) {
password = (const char *)auth_item->vp_strvalue;
} else {
/*
* Maybe there's a CHAP-Password?
*/
if ((auth_item = pairfind(request->packet->vps,
PW_CHAP_PASSWORD)) != NULL) {
password = "******";
} else {
/*
* No password we recognize.
*/
password = "******";
}
}
request->password = auth_item;
/*
* Get the user's authorization information from the database
*/
autz_redo:
result = module_authorize(autz_type, request);
switch (result) {
case RLM_MODULE_NOOP:
case RLM_MODULE_NOTFOUND:
case RLM_MODULE_OK:
case RLM_MODULE_UPDATED:
break;
case RLM_MODULE_HANDLED:
return result;
case RLM_MODULE_FAIL:
case RLM_MODULE_INVALID:
case RLM_MODULE_REJECT:
case RLM_MODULE_USERLOCK:
default:
if ((module_msg = pairfind(request->packet->vps,
PW_MODULE_FAILURE_MESSAGE)) != NULL) {
char msg[MAX_STRING_LEN + 16];
snprintf(msg, sizeof(msg), "Invalid user (%s)",
module_msg->vp_strvalue);
rad_authlog(msg,request,0);
} else {
rad_authlog("Invalid user", request, 0);
}
request->reply->code = PW_AUTHENTICATION_REJECT;
return result;
}
if (!autz_retry) {
tmp = pairfind(request->config_items, PW_AUTZ_TYPE);
if (tmp) {
autz_type = tmp->vp_integer;
RDEBUG2("Using Autz-Type %s",
dict_valnamebyattr(PW_AUTZ_TYPE, autz_type));
autz_retry = 1;
goto autz_redo;
}
}
/*
* If we haven't already proxied the packet, then check
* to see if we should. Maybe one of the authorize
* modules has decided that a proxy should be used. If
* so, get out of here and send the packet.
*/
if (
#ifdef WITH_PROXY
(request->proxy == NULL) &&
#endif
((tmp = pairfind(request->config_items, PW_PROXY_TO_REALM)) != NULL)) {
REALM *realm;
realm = realm_find2(tmp->vp_strvalue);
/*
* Don't authenticate, as the request is going to
* be proxied.
*/
if (realm && realm->auth_pool) {
return RLM_MODULE_OK;
}
/*
* Catch users who set Proxy-To-Realm to a LOCAL
* realm (sigh). But don't complain if it is
* *the* LOCAL realm.
*/
if (realm &&(strcmp(realm->name, "LOCAL") != 0)) {
RDEBUG2("WARNING: You set Proxy-To-Realm = %s, but it is a LOCAL realm! Cancelling proxy request.", realm->name);
}
if (!realm) {
RDEBUG2("WARNING: You set Proxy-To-Realm = %s, but the realm does not exist! Cancelling invalid proxy request.", tmp->vp_strvalue);
}
}
#ifdef WITH_PROXY
authenticate:
#endif
/*
* Perhaps there is a Stripped-User-Name now.
*/
namepair = request->username;
/*
* Validate the user
*/
do {
result = rad_check_password(request);
if (result > 0) {
/* don't reply! */
return RLM_MODULE_HANDLED;
}
} while(0);
/*
* Failed to validate the user.
*
* We PRESUME that the code which failed will clean up
* request->reply->vps, to be ONLY the reply items it
* wants to send back.
*/
if (result < 0) {
RDEBUG2("Failed to authenticate the user.");
request->reply->code = PW_AUTHENTICATION_REJECT;
if ((module_msg = pairfind(request->packet->vps,PW_MODULE_FAILURE_MESSAGE)) != NULL){
char msg[MAX_STRING_LEN+19];
snprintf(msg, sizeof(msg), "Login incorrect (%s)",
module_msg->vp_strvalue);
rad_authlog(msg, request, 0);
} else {
rad_authlog("Login incorrect", request, 0);
}
/* double check: maybe the secret is wrong? */
if ((debug_flag > 1) && (auth_item != NULL) &&
(auth_item->attribute == PW_USER_PASSWORD)) {
uint8_t *p;
p = (uint8_t *) auth_item->vp_strvalue;
while (*p) {
int size;
size = fr_utf8_char(p);
if (!size) {
log_debug(" WARNING: Unprintable characters in the password. Double-check the shared secret on the server and the NAS!");
break;
}
p += size;
}
}
}
#ifdef WITH_SESSION_MGMT
if (result >= 0 &&
(check_item = pairfind(request->config_items, PW_SIMULTANEOUS_USE)) != NULL) {
int r, session_type = 0;
char logstr[1024];
char umsg[MAX_STRING_LEN + 1];
const char *user_msg = NULL;
tmp = pairfind(request->config_items, PW_SESSION_TYPE);
if (tmp) {
session_type = tmp->vp_integer;
RDEBUG2("Using Session-Type %s",
dict_valnamebyattr(PW_SESSION_TYPE, session_type));
}
/*
* User authenticated O.K. Now we have to check
* for the Simultaneous-Use parameter.
*/
if (namepair &&
(r = module_checksimul(session_type, request, check_item->vp_integer)) != 0) {
char mpp_ok = 0;
if (r == 2){
/* Multilink attempt. Check if port-limit > simultaneous-use */
VALUE_PAIR *port_limit;
if ((port_limit = pairfind(request->reply->vps, PW_PORT_LIMIT)) != NULL &&
port_limit->vp_integer > check_item->vp_integer){
RDEBUG2("MPP is OK");
mpp_ok = 1;
}
}
if (!mpp_ok){
if (check_item->vp_integer > 1) {
snprintf(umsg, sizeof(umsg),
"\r\nYou are already logged in %d times - access denied\r\n\n",
(int)check_item->vp_integer);
user_msg = umsg;
} else {
user_msg = "\r\nYou are already logged in - access denied\r\n\n";
}
request->reply->code = PW_AUTHENTICATION_REJECT;
/*
* They're trying to log in too many times.
* Remove ALL reply attributes.
*/
pairfree(&request->reply->vps);
radius_pairmake(request, &request->reply->vps,
"Reply-Message",
user_msg, T_OP_SET);
snprintf(logstr, sizeof(logstr), "Multiple logins (max %d) %s",
check_item->vp_integer,
r == 2 ? "[MPP attempt]" : "");
rad_authlog(logstr, request, 1);
result = -1;
}
}
}
#endif
/*
* Result should be >= 0 here - if not, it means the user
* is rejected, so we just process post-auth and return.
*/
if (result < 0) {
return RLM_MODULE_REJECT;
}
/*
* Add the port number to the Framed-IP-Address if
* vp->addport is set.
*/
if (((tmp = pairfind(request->reply->vps,
PW_FRAMED_IP_ADDRESS)) != NULL) &&
(tmp->flags.addport != 0)) {
VALUE_PAIR *vpPortId;
/*
* Find the NAS port ID.
*/
if ((vpPortId = pairfind(request->packet->vps,
PW_NAS_PORT)) != NULL) {
unsigned long tvalue = ntohl(tmp->vp_integer);
tmp->vp_integer = htonl(tvalue + vpPortId->vp_integer);
tmp->flags.addport = 0;
ip_ntoa(tmp->vp_strvalue, tmp->vp_integer);
} else {
RDEBUG2("WARNING: No NAS-Port attribute in request. CANNOT return a Framed-IP-Address + NAS-Port.\n");
pairdelete(&request->reply->vps, PW_FRAMED_IP_ADDRESS);
}
}
/*
* Set the reply to Access-Accept, if it hasn't already
* been set to something. (i.e. Access-Challenge)
*/
if (request->reply->code == 0)
request->reply->code = PW_AUTHENTICATION_ACK;
if ((module_msg = pairfind(request->packet->vps,PW_MODULE_SUCCESS_MESSAGE)) != NULL){
char msg[MAX_STRING_LEN+12];
snprintf(msg, sizeof(msg), "Login OK (%s)",
module_msg->vp_strvalue);
rad_authlog(msg, request, 1);
} else {
rad_authlog("Login OK", request, 1);
}
/*
* Run the modules in the 'post-auth' section.
*/
result = rad_postauth(request);
return result;
}
/*
* Write accounting information to this modules database.
*/
static int replicate_packet(void *instance, REQUEST *request)
{
int rcode = RLM_MODULE_NOOP;
VALUE_PAIR *vp, *last;
home_server *home;
REALM *realm;
home_pool_t *pool;
RADIUS_PACKET *packet = NULL;
instance = instance; /* -Wunused */
last = request->config_items;
/*
* Send as many packets as necessary to different
* destinations.
*/
while (1) {
vp = pairfind(last, PW_REPLICATE_TO_REALM, 0);
if (!vp) break;
last = vp->next;
realm = realm_find2(vp->vp_strvalue);
if (!realm) {
RDEBUG2("ERROR: Cannot Replicate to unknown realm %s", realm);
continue;
}
/*
* We shouldn't really do this on every loop.
*/
switch (request->packet->code) {
default:
RDEBUG2("ERROR: Cannot replicate unknown packet code %d",
request->packet->code);
cleanup(packet);
return RLM_MODULE_FAIL;
case PW_AUTHENTICATION_REQUEST:
pool = realm->auth_pool;
break;
#ifdef WITH_ACCOUNTING
case PW_ACCOUNTING_REQUEST:
pool = realm->acct_pool;
break;
#endif
#ifdef WITH_COA
case PW_COA_REQUEST:
case PW_DISCONNECT_REQUEST:
pool = realm->acct_pool;
break;
#endif
}
if (!pool) {
RDEBUG2(" WARNING: Cancelling replication to Realm %s, as the realm is local.", realm->name);
continue;
}
home = home_server_ldb(realm->name, pool, request);
if (!home) {
RDEBUG2("ERROR: Failed to find live home server for realm %s",
realm->name);
continue;
}
if (!packet) {
packet = rad_alloc(1);
if (!packet) return RLM_MODULE_FAIL;
packet->sockfd = -1;
packet->code = request->packet->code;
packet->id = fr_rand() & 0xff;
packet->sockfd = fr_socket(&home->src_ipaddr, 0);
if (packet->sockfd < 0) {
RDEBUG("ERROR: Failed opening socket: %s", fr_strerror());
cleanup(packet);
return RLM_MODULE_FAIL;
}
packet->vps = paircopy(request->packet->vps);
if (!packet->vps) {
RDEBUG("ERROR: Out of memory!");
cleanup(packet);
return RLM_MODULE_FAIL;
}
/*
* For CHAP, create the CHAP-Challenge if
* it doesn't exist.
*/
if ((request->packet->code == PW_AUTHENTICATION_REQUEST) &&
(pairfind(request->packet->vps, PW_CHAP_PASSWORD, 0) != NULL) &&
(pairfind(request->packet->vps, PW_CHAP_CHALLENGE, 0) == NULL)) {
vp = radius_paircreate(request, &packet->vps,
PW_CHAP_CHALLENGE, 0,
PW_TYPE_OCTETS);
vp->length = AUTH_VECTOR_LEN;
memcpy(vp->vp_strvalue, request->packet->vector,
AUTH_VECTOR_LEN);
}
} else {
size_t i;
for (i = 0; i < sizeof(packet->vector); i++) {
packet->vector[i] = fr_rand() & 0xff;
}
packet->id++;
free(packet->data);
packet->data = NULL;
packet->data_len = 0;
}
/*
* (Re)-Write these.
*/
packet->dst_ipaddr = home->ipaddr;
packet->dst_port = home->port;
memset(&packet->src_ipaddr, 0, sizeof(packet->src_ipaddr));
packet->src_port = 0;
/*
* Encode, sign and then send the packet.
*/
RDEBUG("Replicating packet to Realm %s", realm->name);
if (rad_send(packet, NULL, home->secret) < 0) {
RDEBUG("ERROR: Failed replicating packet: %s",
fr_strerror());
cleanup(packet);
return RLM_MODULE_FAIL;
}
/*
* We've sent it to at least one destination.
*/
rcode = RLM_MODULE_OK;
}
cleanup(packet);
return rcode;
}
/** Copy packet to multiple servers
*
* Create a duplicate of the packet and send it to a list of realms
* defined by the presence of the Replicate-To-Realm VP in the control
* list of the current request.
*
* This is pretty hacky and is 100% fire and forget. If you're looking
* to forward authentication requests to multiple realms and process
* the responses, this function will not allow you to do that.
*
* @param[in] instance of this module.
* @param[in] request The current request.
* @param[in] list of attributes to copy to the duplicate packet.
* @param[in] code to write into the code field of the duplicate packet.
* @return RCODE fail on error, invalid if list does not exist, noop if no
* replications succeeded, else ok.
*/
static int replicate_packet(UNUSED void *instance, REQUEST *request,
pair_lists_t list, unsigned int code)
{
int rcode = RLM_MODULE_NOOP;
VALUE_PAIR *vp, **vps, *last;
home_server *home;
REALM *realm;
home_pool_t *pool;
RADIUS_PACKET *packet = NULL;
last = request->config_items;
/*
* Send as many packets as necessary to different
* destinations.
*/
while (1) {
vp = pairfind(last, PW_REPLICATE_TO_REALM, 0, TAG_ANY);
if (!vp) break;
last = vp->next;
realm = realm_find2(vp->vp_strvalue);
if (!realm) {
RDEBUG2E("Cannot Replicate to unknown realm %s", realm);
continue;
}
/*
* We shouldn't really do this on every loop.
*/
switch (request->packet->code) {
default:
RDEBUG2E("Cannot replicate unknown packet code %d",
request->packet->code);
cleanup(packet);
return RLM_MODULE_FAIL;
case PW_AUTHENTICATION_REQUEST:
pool = realm->auth_pool;
break;
#ifdef WITH_ACCOUNTING
case PW_ACCOUNTING_REQUEST:
pool = realm->acct_pool;
break;
#endif
#ifdef WITH_COA
case PW_COA_REQUEST:
case PW_DISCONNECT_REQUEST:
pool = realm->acct_pool;
break;
#endif
}
if (!pool) {
RDEBUG2W("Cancelling replication to Realm %s, as the realm is local.", realm->name);
continue;
}
home = home_server_ldb(realm->name, pool, request);
if (!home) {
RDEBUG2E("Failed to find live home server for realm %s",
realm->name);
continue;
}
/*
* For replication to multiple servers we re-use the packet
* we built here.
*/
if (!packet) {
packet = rad_alloc(NULL, 1);
if (!packet) return RLM_MODULE_FAIL;
packet->sockfd = -1;
packet->code = code;
packet->id = fr_rand() & 0xff;
packet->sockfd = fr_socket(&home->src_ipaddr, 0);
if (packet->sockfd < 0) {
RDEBUGE("Failed opening socket: %s", fr_strerror());
rcode = RLM_MODULE_FAIL;
goto done;
}
vps = radius_list(request, list);
if (!vps) {
RDEBUGW("List '%s' doesn't exist for "
"this packet", fr_int2str(pair_lists,
list, "?unknown?"));
rcode = RLM_MODULE_INVALID;
goto done;
}
/*
* Don't assume the list actually contains any
* attributes.
*/
if (*vps) {
packet->vps = paircopy(packet, *vps);
if (!packet->vps) {
rcode = RLM_MODULE_FAIL;
goto done;
}
}
/*
* For CHAP, create the CHAP-Challenge if
* it doesn't exist.
*/
if ((code == PW_AUTHENTICATION_REQUEST) &&
(pairfind(request->packet->vps, PW_CHAP_PASSWORD, 0, TAG_ANY) != NULL) &&
(pairfind(request->packet->vps, PW_CHAP_CHALLENGE, 0, TAG_ANY) == NULL)) {
vp = radius_paircreate(request, &packet->vps,
PW_CHAP_CHALLENGE, 0);
vp->length = AUTH_VECTOR_LEN;
memcpy(vp->vp_strvalue, request->packet->vector,
AUTH_VECTOR_LEN);
}
} else {
size_t i;
for (i = 0; i < sizeof(packet->vector); i++) {
packet->vector[i] = fr_rand() & 0xff;
}
packet->id++;
free(packet->data);
packet->data = NULL;
packet->data_len = 0;
}
/*
* (Re)-Write these.
*/
packet->dst_ipaddr = home->ipaddr;
packet->dst_port = home->port;
memset(&packet->src_ipaddr, 0, sizeof(packet->src_ipaddr));
packet->src_port = 0;
/*
* Encode, sign and then send the packet.
*/
RDEBUG("Replicating list '%s' to Realm '%s'",
fr_int2str(pair_lists, list, "¿unknown?"),realm->name);
if (rad_send(packet, NULL, home->secret) < 0) {
RDEBUGE("Failed replicating packet: %s",
fr_strerror());
rcode = RLM_MODULE_FAIL;
goto done;
}
/*
* We've sent it to at least one destination.
*/
rcode = RLM_MODULE_OK;
}
done:
cleanup(packet);
return rcode;
}
/*
* Process and reply to an authentication request
*
* The return value of this function isn't actually used right now, so
* it's not entirely clear if it is returning the right things. --Pac.
*/
int rad_authenticate(REQUEST *request)
{
#ifdef WITH_SESSION_MGMT
VALUE_PAIR *check_item;
#endif
VALUE_PAIR *module_msg;
VALUE_PAIR *tmp = NULL;
int result;
char autz_retry = 0;
int autz_type = 0;
#ifdef WITH_PROXY
/*
* If this request got proxied to another server, we need
* to check whether it authenticated the request or not.
*
* request->proxy gets set only AFTER authorization, so
* it's safe to check it here. If it exists, it means
* we're doing a second pass through rad_authenticate().
*/
if (request->proxy) {
int code = 0;
if (request->proxy_reply) code = request->proxy_reply->code;
switch (code) {
/*
* Reply of ACCEPT means accept, thus set Auth-Type
* accordingly.
*/
case PW_CODE_ACCESS_ACCEPT:
tmp = radius_paircreate(request,
&request->config,
PW_AUTH_TYPE, 0);
if (tmp) tmp->vp_integer = PW_AUTHTYPE_ACCEPT;
goto authenticate;
/*
* Challenges are punted back to the NAS without any
* further processing.
*/
case PW_CODE_ACCESS_CHALLENGE:
request->reply->code = PW_CODE_ACCESS_CHALLENGE;
fr_state_put_vps(request, request->packet, request->reply);
return RLM_MODULE_OK;
/*
* ALL other replies mean reject. (this is fail-safe)
*
* Do NOT do any authorization or authentication. They
* are being rejected, so we minimize the amount of work
* done by the server, by rejecting them here.
*/
case PW_CODE_ACCESS_REJECT:
rad_authlog("Login incorrect (Home Server says so)",
request, 0);
request->reply->code = PW_CODE_ACCESS_REJECT;
fr_state_discard(request, request->packet);
return RLM_MODULE_REJECT;
default:
rad_authlog("Login incorrect (Home Server failed to respond)",
request, 0);
fr_state_discard(request, request->packet);
return RLM_MODULE_REJECT;
}
}
#endif
/*
* Look for, and cache, passwords.
*/
if (!request->password) {
request->password = pairfind(request->packet->vps, PW_USER_PASSWORD, 0, TAG_ANY);
}
if (!request->password) {
request->password = pairfind(request->packet->vps, PW_CHAP_PASSWORD, 0, TAG_ANY);
}
/*
* Grab the VPS associated with the State attribute.
*/
fr_state_get_vps(request, request->packet);
/*
* Get the user's authorization information from the database
*/
autz_redo:
result = process_authorize(autz_type, request);
switch (result) {
case RLM_MODULE_NOOP:
case RLM_MODULE_NOTFOUND:
case RLM_MODULE_OK:
case RLM_MODULE_UPDATED:
break;
case RLM_MODULE_HANDLED:
return result;
case RLM_MODULE_FAIL:
case RLM_MODULE_INVALID:
case RLM_MODULE_REJECT:
case RLM_MODULE_USERLOCK:
default:
if ((module_msg = pairfind(request->packet->vps, PW_MODULE_FAILURE_MESSAGE, 0, TAG_ANY)) != NULL) {
char msg[MAX_STRING_LEN + 16];
snprintf(msg, sizeof(msg), "Invalid user (%s)",
module_msg->vp_strvalue);
rad_authlog(msg,request,0);
} else {
rad_authlog("Invalid user", request, 0);
}
request->reply->code = PW_CODE_ACCESS_REJECT;
return result;
}
if (!autz_retry) {
tmp = pairfind(request->config, PW_AUTZ_TYPE, 0, TAG_ANY);
if (tmp) {
autz_type = tmp->vp_integer;
RDEBUG2("Using Autz-Type %s",
dict_valnamebyattr(PW_AUTZ_TYPE, 0, autz_type));
autz_retry = 1;
goto autz_redo;
}
}
/*
* If we haven't already proxied the packet, then check
* to see if we should. Maybe one of the authorize
* modules has decided that a proxy should be used. If
* so, get out of here and send the packet.
*/
if (
#ifdef WITH_PROXY
(request->proxy == NULL) &&
#endif
((tmp = pairfind(request->config, PW_PROXY_TO_REALM, 0, TAG_ANY)) != NULL)) {
REALM *realm;
realm = realm_find2(tmp->vp_strvalue);
/*
* Don't authenticate, as the request is going to
* be proxied.
*/
if (realm && realm->auth_pool) {
return RLM_MODULE_OK;
}
/*
* Catch users who set Proxy-To-Realm to a LOCAL
* realm (sigh). But don't complain if it is
* *the* LOCAL realm.
*/
if (realm &&(strcmp(realm->name, "LOCAL") != 0)) {
RWDEBUG2("You set Proxy-To-Realm = %s, but it is a LOCAL realm! Cancelling proxy request.", realm->name);
}
if (!realm) {
RWDEBUG2("You set Proxy-To-Realm = %s, but the realm does not exist! Cancelling invalid proxy request.", tmp->vp_strvalue);
}
}
#ifdef WITH_PROXY
authenticate:
#endif
/*
* Validate the user
*/
do {
result = rad_check_password(request);
if (result > 0) {
return RLM_MODULE_HANDLED;
}
} while(0);
/*
* Failed to validate the user.
*
* We PRESUME that the code which failed will clean up
* request->reply->vps, to be ONLY the reply items it
* wants to send back.
*/
if (result < 0) {
RDEBUG2("Failed to authenticate the user");
request->reply->code = PW_CODE_ACCESS_REJECT;
if ((module_msg = pairfind(request->packet->vps, PW_MODULE_FAILURE_MESSAGE, 0, TAG_ANY)) != NULL){
char msg[MAX_STRING_LEN+19];
snprintf(msg, sizeof(msg), "Login incorrect (%s)",
module_msg->vp_strvalue);
rad_authlog(msg, request, 0);
} else {
rad_authlog("Login incorrect", request, 0);
}
if (request->password) {
VERIFY_VP(request->password);
/* double check: maybe the secret is wrong? */
if ((debug_flag > 1) && (request->password->da->attr == PW_USER_PASSWORD)) {
uint8_t const *p;
p = (uint8_t const *) request->password->vp_strvalue;
while (*p) {
int size;
size = fr_utf8_char(p);
if (!size) {
RWDEBUG("Unprintable characters in the password. Double-check the "
"shared secret on the server and the NAS!");
break;
}
p += size;
}
}
}
}
#ifdef WITH_SESSION_MGMT
if (result >= 0 &&
(check_item = pairfind(request->config, PW_SIMULTANEOUS_USE, 0, TAG_ANY)) != NULL) {
int r, session_type = 0;
char logstr[1024];
char umsg[MAX_STRING_LEN + 1];
tmp = pairfind(request->config, PW_SESSION_TYPE, 0, TAG_ANY);
if (tmp) {
session_type = tmp->vp_integer;
RDEBUG2("Using Session-Type %s",
dict_valnamebyattr(PW_SESSION_TYPE, 0, session_type));
}
/*
* User authenticated O.K. Now we have to check
* for the Simultaneous-Use parameter.
*/
if (request->username &&
(r = process_checksimul(session_type, request, check_item->vp_integer)) != 0) {
char mpp_ok = 0;
if (r == 2){
/* Multilink attempt. Check if port-limit > simultaneous-use */
VALUE_PAIR *port_limit;
if ((port_limit = pairfind(request->reply->vps, PW_PORT_LIMIT, 0, TAG_ANY)) != NULL &&
port_limit->vp_integer > check_item->vp_integer){
RDEBUG2("MPP is OK");
mpp_ok = 1;
}
}
if (!mpp_ok){
if (check_item->vp_integer > 1) {
snprintf(umsg, sizeof(umsg), "%s (%u)", main_config.denied_msg,
check_item->vp_integer);
} else {
strlcpy(umsg, main_config.denied_msg, sizeof(umsg));
}
request->reply->code = PW_CODE_ACCESS_REJECT;
/*
* They're trying to log in too many times.
* Remove ALL reply attributes.
*/
pairfree(&request->reply->vps);
pairmake_reply("Reply-Message", umsg, T_OP_SET);
snprintf(logstr, sizeof(logstr), "Multiple logins (max %d) %s",
check_item->vp_integer,
r == 2 ? "[MPP attempt]" : "");
rad_authlog(logstr, request, 1);
result = -1;
}
}
}
#endif
/*
* Result should be >= 0 here - if not, it means the user
* is rejected, so we just process post-auth and return.
*/
if (result < 0) {
return RLM_MODULE_REJECT;
}
/*
* Set the reply to Access-Accept, if it hasn't already
* been set to something. (i.e. Access-Challenge)
*/
if (request->reply->code == 0)
request->reply->code = PW_CODE_ACCESS_ACCEPT;
if ((module_msg = pairfind(request->packet->vps, PW_MODULE_SUCCESS_MESSAGE, 0, TAG_ANY)) != NULL){
char msg[MAX_STRING_LEN+12];
snprintf(msg, sizeof(msg), "Login OK (%s)",
module_msg->vp_strvalue);
rad_authlog(msg, request, 1);
} else {
rad_authlog("Login OK", request, 1);
}
return result;
}
/** Copy packet to multiple servers
*
* Create a duplicate of the packet and send it to a list of realms
* defined by the presence of the Replicate-To-Realm VP in the control
* list of the current request.
*
* This is pretty hacky and is 100% fire and forget. If you're looking
* to forward authentication requests to multiple realms and process
* the responses, this function will not allow you to do that.
*
* @param[in] instance of this module.
* @param[in] request The current request.
* @param[in] list of attributes to copy to the duplicate packet.
* @param[in] code to write into the code field of the duplicate packet.
* @return RCODE fail on error, invalid if list does not exist, noop if no replications succeeded, else ok.
*/
static rlm_rcode_t replicate_packet(UNUSED void *instance, REQUEST *request, pair_lists_t list, PW_CODE code)
{
int rcode = RLM_MODULE_NOOP;
bool pass1 = true;
vp_cursor_t cursor;
VALUE_PAIR *vp;
RADIUS_PACKET *packet = NULL;
rcode = rlm_replicate_alloc(&packet, request, list, code);
if (rcode != RLM_MODULE_OK) {
return rcode;
}
/*
* Send as many packets as necessary to different destinations.
*/
fr_cursor_init(&cursor, &request->config_items);
while ((vp = fr_cursor_next_by_num(&cursor, PW_REPLICATE_TO_REALM, 0, TAG_ANY))) {
home_server_t *home;
REALM *realm;
home_pool_t *pool;
realm = realm_find2(vp->vp_strvalue);
if (!realm) {
REDEBUG2("Cannot Replicate to unknown realm \"%s\"", vp->vp_strvalue);
continue;
}
/*
* We shouldn't really do this on every loop.
*/
switch (request->packet->code) {
default:
REDEBUG2("Cannot replicate unknown packet code %d", request->packet->code);
rcode = RLM_MODULE_FAIL;
goto done;
case PW_CODE_ACCESS_REQUEST:
pool = realm->auth_pool;
break;
#ifdef WITH_ACCOUNTING
case PW_CODE_ACCOUNTING_REQUEST:
pool = realm->acct_pool;
break;
#endif
#ifdef WITH_COA
case PW_CODE_COA_REQUEST:
case PW_CODE_DISCONNECT_REQUEST:
pool = realm->acct_pool;
break;
#endif
}
if (!pool) {
RWDEBUG2("Cancelling replication to Realm %s, as the realm is local", realm->name);
continue;
}
home = home_server_ldb(realm->name, pool, request);
if (!home) {
REDEBUG2("Failed to find live home server for realm %s", realm->name);
continue;
}
/*
* For replication to multiple servers we re-use the packet
* we built here.
*/
if (pass1) {
packet->id = fr_rand() & 0xff;
packet->sockfd = fr_socket(&home->src_ipaddr, 0);
if (packet->sockfd < 0) {
REDEBUG("Failed opening socket: %s", fr_strerror());
rcode = RLM_MODULE_FAIL;
goto done;
}
pass1 = false;
} else {
size_t i;
for (i = 0; i < sizeof(packet->vector); i++) {
packet->vector[i] = fr_rand() & 0xff;
}
packet->id++;
TALLOC_FREE(packet->data);
packet->data_len = 0;
}
/*
* (Re)-Write these.
*/
packet->dst_ipaddr = home->ipaddr;
packet->dst_port = home->port;
memset(&packet->src_ipaddr, 0, sizeof(packet->src_ipaddr));
packet->src_port = 0;
/*
* Encode, sign and then send the packet.
*/
RDEBUG("Replicating list '%s' to Realm '%s'", fr_int2str(pair_lists, list, "<INVALID>"), realm->name);
if (rad_send(packet, NULL, home->secret) < 0) {
REDEBUG("Failed replicating packet: %s", fr_strerror());
rcode = RLM_MODULE_FAIL;
goto done;
}
/*
* We've sent it to at least one destination.
*/
rcode = RLM_MODULE_OK;
}
done:
talloc_free(packet);
return rcode;
}