/*
* Should be called AFTER yanking it from the list, so that
* any newly inserted entries don't collide with this one.
*/
bool fr_packet_list_id_free(fr_packet_list_t *pl,
RADIUS_PACKET *request, bool yank)
{
fr_packet_socket_t *ps;
if (!pl || !request) return false;
if (yank && !fr_packet_list_yank(pl, request)) return false;
ps = fr_socket_find(pl, request->sockfd);
if (!ps) return false;
/*
* Don't mark the ID as free. We just won't use it until
* we've cycled through all 256 IDs.
*/
ps->num_outgoing--;
pl->num_outgoing--;
request->id = -1;
return true;
}
/*
* Send one packet.
*/
static int send_one_packet(rc_request_t *request)
{
assert(request->done == false);
/*
* Remember when we have to wake up, to re-send the
* request, of we didn't receive a reply.
*/
if ((sleep_time == -1) || (sleep_time > (int) timeout)) sleep_time = (int) timeout;
/*
* Haven't sent the packet yet. Initialize it.
*/
if (request->packet->id == -1) {
int i;
bool rcode;
assert(request->reply == NULL);
/*
* Didn't find a free packet ID, we're not done,
* we don't sleep, and we stop trying to process
* this packet.
*/
retry:
request->packet->src_ipaddr.af = server_ipaddr.af;
rcode = fr_packet_list_id_alloc(pl, ipproto, &request->packet, NULL);
if (!rcode) {
int mysockfd;
#ifdef WITH_TCP
if (proto) {
mysockfd = fr_socket_client_tcp(NULL,
&request->packet->dst_ipaddr,
request->packet->dst_port, false);
} else
#endif
mysockfd = fr_socket(&client_ipaddr, 0);
if (mysockfd < 0) {
ERROR("Failed opening socket");
exit(1);
}
if (!fr_packet_list_socket_add(pl, mysockfd, ipproto,
&request->packet->dst_ipaddr,
request->packet->dst_port, NULL)) {
ERROR("Can't add new socket");
exit(1);
}
goto retry;
}
assert(request->packet->id != -1);
assert(request->packet->data == NULL);
for (i = 0; i < 4; i++) {
((uint32_t *) request->packet->vector)[i] = fr_rand();
}
/*
* Update the password, so it can be encrypted with the
* new authentication vector.
*/
if (request->password) {
VALUE_PAIR *vp;
if ((vp = fr_pair_find_by_num(request->packet->vps, PW_USER_PASSWORD, 0, TAG_ANY)) != NULL) {
fr_pair_value_strcpy(vp, request->password->vp_strvalue);
} else if ((vp = fr_pair_find_by_num(request->packet->vps, PW_CHAP_PASSWORD, 0, TAG_ANY)) != NULL) {
uint8_t buffer[17];
rad_chap_encode(request->packet, buffer, fr_rand() & 0xff, request->password);
fr_pair_value_memcpy(vp, buffer, 17);
} else if (fr_pair_find_by_num(request->packet->vps, PW_MS_CHAP_PASSWORD, 0, TAG_ANY) != NULL) {
mschapv1_encode(request->packet, &request->packet->vps, request->password->vp_strvalue);
} else {
DEBUG("WARNING: No password in the request");
}
}
request->timestamp = time(NULL);
request->tries = 1;
request->resend++;
} else { /* request->packet->id >= 0 */
time_t now = time(NULL);
/*
* FIXME: Accounting packets are never retried!
* The Acct-Delay-Time attribute is updated to
* reflect the delay, and the packet is re-sent
* from scratch!
*/
/*
* Not time for a retry, do so.
*/
if ((now - request->timestamp) < timeout) {
/*
* When we walk over the tree sending
* packets, we update the minimum time
* required to sleep.
*/
if ((sleep_time == -1) ||
(sleep_time > (now - request->timestamp))) {
sleep_time = now - request->timestamp;
}
return 0;
}
/*
* We're not trying later, maybe the packet is done.
*/
if (request->tries == retries) {
assert(request->packet->id >= 0);
/*
* Delete the request from the tree of
* outstanding requests.
*/
fr_packet_list_yank(pl, request->packet);
REDEBUG("No reply from server for ID %d socket %d",
request->packet->id, request->packet->sockfd);
deallocate_id(request);
/*
* Normally we mark it "done" when we've received
* the reply, but this is a special case.
*/
if (request->resend == resend_count) {
request->done = true;
}
stats.lost++;
return -1;
}
/*
* We are trying later.
*/
request->timestamp = now;
request->tries++;
}
/*
* Send the packet.
*/
if (rad_send(request->packet, NULL, secret) < 0) {
REDEBUG("Failed to send packet for ID %d", request->packet->id);
deallocate_id(request);
request->done = true;
return -1;
}
fr_packet_header_print(fr_log_fp, request->packet, false);
if (fr_debug_lvl > 0) vp_printlist(fr_log_fp, request->packet->vps);
return 0;
}
/*
* Receive one packet, maybe.
*/
static int recv_one_packet(int wait_time)
{
fd_set set;
struct timeval tv;
radclient_t *radclient;
RADIUS_PACKET *reply, **request_p;
volatile int max_fd;
/* And wait for reply, timing out as necessary */
FD_ZERO(&set);
max_fd = fr_packet_list_fd_set(pl, &set);
if (max_fd < 0) exit(1); /* no sockets to listen on! */
if (wait_time <= 0) {
tv.tv_sec = 0;
} else {
tv.tv_sec = wait_time;
}
tv.tv_usec = 0;
/*
* No packet was received.
*/
if (select(max_fd, &set, NULL, NULL, &tv) <= 0) {
return 0;
}
/*
* Look for the packet.
*/
reply = fr_packet_list_recv(pl, &set);
if (!reply) {
fprintf(stderr, "radclient: received bad packet: %s\n",
fr_strerror());
#ifdef WITH_TCP
/*
* If the packet is bad, we close the socket.
* I'm not sure how to do that now, so we just
* die...
*/
if (proto) exit(1);
#endif
return -1; /* bad packet */
}
/*
* udpfromto issues. We may have bound to "*",
* and we want to find the replies that are sent to
* (say) 127.0.0.1.
*/
reply->dst_ipaddr = client_ipaddr;
reply->dst_port = client_port;
#ifdef WITH_TCP
reply->src_ipaddr = server_ipaddr;
reply->src_port = server_port;
#endif
if (fr_debug_flag > 2) print_hex(reply);
request_p = fr_packet_list_find_byreply(pl, reply);
if (!request_p) {
fprintf(stderr, "radclient: received response to request we did not send. (id=%d socket %d)\n", reply->id, reply->sockfd);
rad_free(&reply);
return -1; /* got reply to packet we didn't send */
}
radclient = fr_packet2myptr(radclient_t, request, request_p);
/*
* Fails the signature validation: not a real reply.
* FIXME: Silently drop it and listen for another packet.
*/
if (rad_verify(reply, radclient->request, secret) < 0) {
fr_perror("rad_verify");
totallost++;
goto packet_done; /* shared secret is incorrect */
}
fr_packet_list_yank(pl, radclient->request);
if (print_filename) printf("%s:%d %d\n",
radclient->filename,
radclient->packet_number,
reply->code);
deallocate_id(radclient);
radclient->reply = reply;
reply = NULL;
/*
* If this fails, we're out of memory.
*/
if (rad_decode(radclient->reply, radclient->request, secret) != 0) {
fr_perror("rad_decode");
totallost++;
goto packet_done;
}
/* libradius debug already prints out the value pairs for us */
if (!fr_debug_flag && do_output) {
printf("Received response ID %d, code %d, length = %zd\n",
radclient->reply->id, radclient->reply->code,
radclient->reply->data_len);
vp_printlist(stdout, radclient->reply->vps);
}
if ((radclient->reply->code == PW_AUTHENTICATION_ACK) ||
(radclient->reply->code == PW_ACCOUNTING_RESPONSE) ||
(radclient->reply->code == PW_COA_ACK) ||
(radclient->reply->code == PW_DISCONNECT_ACK)) {
success = 1; /* have a good response */
totalapp++;
} else {
totaldeny++;
}
if (radclient->resend == resend_count) {
radclient->done = 1;
}
packet_done:
rad_free(&radclient->reply);
rad_free(&reply); /* may be NULL */
return 0;
}
/*
* Send one packet.
*/
static int send_one_packet(radclient_t *radclient)
{
assert(radclient->done == 0);
/*
* Remember when we have to wake up, to re-send the
* request, of we didn't receive a response.
*/
if ((sleep_time == -1) ||
(sleep_time > (int) timeout)) {
sleep_time = (int) timeout;
}
/*
* Haven't sent the packet yet. Initialize it.
*/
if (radclient->request->id == -1) {
int i, rcode;
assert(radclient->reply == NULL);
/*
* Didn't find a free packet ID, we're not done,
* we don't sleep, and we stop trying to process
* this packet.
*/
retry:
radclient->request->src_ipaddr.af = server_ipaddr.af;
rcode = fr_packet_list_id_alloc(pl, ipproto,
radclient->request, NULL);
if (rcode < 0) {
int mysockfd;
#ifdef WITH_TCP
if (proto) {
mysockfd = fr_tcp_client_socket(NULL,
&server_ipaddr,
server_port);
} else
#endif
mysockfd = fr_socket(&client_ipaddr, 0);
if (!mysockfd) {
fprintf(stderr, "radclient: Can't open new socket\n");
exit(1);
}
if (!fr_packet_list_socket_add(pl, mysockfd, ipproto,
&server_ipaddr,
server_port, NULL)) {
fprintf(stderr, "radclient: Can't add new socket\n");
exit(1);
}
goto retry;
}
if (rcode == 0) {
done = 0;
sleep_time = 0;
return 0;
}
assert(radclient->request->id != -1);
assert(radclient->request->data == NULL);
for (i = 0; i < 4; i++) {
((uint32_t *) radclient->request->vector)[i] = fr_rand();
}
/*
* Update the password, so it can be encrypted with the
* new authentication vector.
*/
if (radclient->password[0] != '\0') {
VALUE_PAIR *vp;
if ((vp = pairfind(radclient->request->vps, PW_USER_PASSWORD, 0)) != NULL) {
strlcpy(vp->vp_strvalue, radclient->password,
sizeof(vp->vp_strvalue));
vp->length = strlen(vp->vp_strvalue);
} else if ((vp = pairfind(radclient->request->vps, PW_CHAP_PASSWORD, 0)) != NULL) {
int already_hex = 0;
/*
* If it's 17 octets, it *might* be already encoded.
* Or, it might just be a 17-character password (maybe UTF-8)
* Check it for non-printable characters. The odds of ALL
* of the characters being 32..255 is (1-7/8)^17, or (1/8)^17,
* or 1/(2^51), which is pretty much zero.
*/
if (vp->length == 17) {
for (i = 0; i < 17; i++) {
if (vp->vp_octets[i] < 32) {
already_hex = 1;
break;
}
}
}
/*
* Allow the user to specify ASCII or hex CHAP-Password
*/
if (!already_hex) {
strlcpy(vp->vp_strvalue, radclient->password,
sizeof(vp->vp_strvalue));
vp->length = strlen(vp->vp_strvalue);
rad_chap_encode(radclient->request,
vp->vp_octets,
fr_rand() & 0xff, vp);
vp->length = 17;
}
} else if (pairfind(radclient->request->vps, PW_MSCHAP_PASSWORD, 0) != NULL) {
mschapv1_encode(&radclient->request->vps,
radclient->password);
} else if (fr_debug_flag) {
printf("WARNING: No password in the request\n");
}
}
radclient->timestamp = time(NULL);
radclient->tries = 1;
radclient->resend++;
/*
* Duplicate found. Serious error!
*/
if (!fr_packet_list_insert(pl, &radclient->request)) {
assert(0 == 1);
}
#ifdef WITH_TCP
/*
* WTF?
*/
if (client_port == 0) {
client_ipaddr = radclient->request->src_ipaddr;
client_port = radclient->request->src_port;
}
#endif
} else { /* radclient->request->id >= 0 */
time_t now = time(NULL);
/*
* FIXME: Accounting packets are never retried!
* The Acct-Delay-Time attribute is updated to
* reflect the delay, and the packet is re-sent
* from scratch!
*/
/*
* Not time for a retry, do so.
*/
if ((now - radclient->timestamp) < timeout) {
/*
* When we walk over the tree sending
* packets, we update the minimum time
* required to sleep.
*/
if ((sleep_time == -1) ||
(sleep_time > (now - radclient->timestamp))) {
sleep_time = now - radclient->timestamp;
}
return 0;
}
/*
* We're not trying later, maybe the packet is done.
*/
if (radclient->tries == retries) {
assert(radclient->request->id >= 0);
/*
* Delete the request from the tree of
* outstanding requests.
*/
fr_packet_list_yank(pl, radclient->request);
fprintf(stderr, "radclient: no response from server for ID %d socket %d\n", radclient->request->id, radclient->request->sockfd);
deallocate_id(radclient);
/*
* Normally we mark it "done" when we've received
* the response, but this is a special case.
*/
if (radclient->resend == resend_count) {
radclient->done = 1;
}
totallost++;
return -1;
}
/*
* We are trying later.
*/
radclient->timestamp = now;
radclient->tries++;
}
/*
* Send the packet.
*/
if (rad_send(radclient->request, NULL, secret) < 0) {
fprintf(stderr, "radclient: Failed to send packet for ID %d: %s\n",
radclient->request->id, fr_strerror());
}
if (fr_debug_flag > 2) print_hex(radclient->request);
return 0;
}
/*
* Send one packet.
*/
static int send_one_packet(rc_request_t *request)
{
assert(request->done == false);
/*
* Remember when we have to wake up, to re-send the
* request, of we didn't receive a reply.
*/
if ((sleep_time == -1) || (sleep_time > (int) timeout)) {
sleep_time = (int) timeout;
}
/*
* Haven't sent the packet yet. Initialize it.
*/
if (request->packet->id == -1) {
int i;
bool rcode;
assert(request->reply == NULL);
/*
* Didn't find a free packet ID, we're not done,
* we don't sleep, and we stop trying to process
* this packet.
*/
retry:
request->packet->src_ipaddr.af = server_ipaddr.af;
rcode = fr_packet_list_id_alloc(pl, ipproto,
&request->packet, NULL);
if (!rcode) {
int mysockfd;
#ifdef WITH_TCP
if (proto) {
mysockfd = fr_tcp_client_socket(NULL,
&server_ipaddr,
server_port);
} else
#endif
mysockfd = fr_socket(&client_ipaddr, 0);
if (mysockfd < 0) {
ERROR("Can't open new socket: %s", strerror(errno));
exit(1);
}
if (!fr_packet_list_socket_add(pl, mysockfd, ipproto,
&server_ipaddr,
server_port, NULL)) {
ERROR("Can't add new socket");
exit(1);
}
goto retry;
}
assert(request->packet->id != -1);
assert(request->packet->data == NULL);
for (i = 0; i < 4; i++) {
((uint32_t *) request->packet->vector)[i] = fr_rand();
}
/*
* Update the password, so it can be encrypted with the
* new authentication vector.
*/
if (request->password[0] != '\0') {
VALUE_PAIR *vp;
if ((vp = pairfind(request->packet->vps, PW_USER_PASSWORD, 0, TAG_ANY)) != NULL) {
pairstrcpy(vp, request->password);
} else if ((vp = pairfind(request->packet->vps, PW_CHAP_PASSWORD, 0, TAG_ANY)) != NULL) {
bool already_hex = false;
/*
* If it's 17 octets, it *might* be already encoded.
* Or, it might just be a 17-character password (maybe UTF-8)
* Check it for non-printable characters. The odds of ALL
* of the characters being 32..255 is (1-7/8)^17, or (1/8)^17,
* or 1/(2^51), which is pretty much zero.
*/
if (vp->length == 17) {
for (i = 0; i < 17; i++) {
if (vp->vp_octets[i] < 32) {
already_hex = true;
break;
}
}
}
/*
* Allow the user to specify ASCII or hex CHAP-Password
*/
if (!already_hex) {
uint8_t *p;
size_t len, len2;
len = len2 = strlen(request->password);
if (len2 < 17) len2 = 17;
p = talloc_zero_array(vp, uint8_t, len2);
memcpy(p, request->password, len);
rad_chap_encode(request->packet,
p,
fr_rand() & 0xff, vp);
vp->vp_octets = p;
vp->length = 17;
}
} else if (pairfind(request->packet->vps, PW_MSCHAP_PASSWORD, 0, TAG_ANY) != NULL) {
mschapv1_encode(request->packet,
&request->packet->vps,
request->password);
} else {
DEBUG("WARNING: No password in the request");
}
}
request->timestamp = time(NULL);
request->tries = 1;
request->resend++;
#ifdef WITH_TCP
/*
* WTF?
*/
if (client_port == 0) {
client_ipaddr = request->packet->src_ipaddr;
client_port = request->packet->src_port;
}
#endif
} else { /* request->packet->id >= 0 */
time_t now = time(NULL);
/*
* FIXME: Accounting packets are never retried!
* The Acct-Delay-Time attribute is updated to
* reflect the delay, and the packet is re-sent
* from scratch!
*/
/*
* Not time for a retry, do so.
*/
if ((now - request->timestamp) < timeout) {
/*
* When we walk over the tree sending
* packets, we update the minimum time
* required to sleep.
*/
if ((sleep_time == -1) ||
(sleep_time > (now - request->timestamp))) {
sleep_time = now - request->timestamp;
}
return 0;
}
/*
* We're not trying later, maybe the packet is done.
*/
if (request->tries == retries) {
assert(request->packet->id >= 0);
/*
* Delete the request from the tree of
* outstanding requests.
*/
fr_packet_list_yank(pl, request->packet);
REDEBUG("No reply from server for ID %d socket %d",
request->packet->id, request->packet->sockfd);
deallocate_id(request);
/*
* Normally we mark it "done" when we've received
* the reply, but this is a special case.
*/
if (request->resend == resend_count) {
request->done = true;
}
stats.lost++;
return -1;
}
/*
* We are trying later.
*/
request->timestamp = now;
request->tries++;
}
/*
* Send the packet.
*/
if (rad_send(request->packet, NULL, secret) < 0) {
REDEBUG("Failed to send packet for ID %d", request->packet->id);
}
return 0;
}
