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-rw-r--r--dtls.c122
-rw-r--r--dtls.h1
-rw-r--r--hash.c22
-rw-r--r--hash.h3
-rw-r--r--radsecproxy.c9
-rw-r--r--radsecproxy.h2
6 files changed, 109 insertions, 50 deletions
diff --git a/dtls.c b/dtls.c
index 9f68133..e872dd3 100644
--- a/dtls.c
+++ b/dtls.c
@@ -28,6 +28,7 @@
#include <openssl/err.h>
#include "debug.h"
#include "list.h"
+#include "hash.h"
#include "util.h"
#include "radsecproxy.h"
#include "dtls.h"
@@ -96,12 +97,16 @@ void *udpdtlsserverrd(void *arg) {
unsigned char buf[4];
struct sockaddr_storage from;
socklen_t fromlen = sizeof(from);
- struct clsrvconf *conf;
- struct list_node *node;
struct client *client;
fd_set readfds;
pthread_t dtlsserverth;
-
+ struct hash *rbiosh;
+ struct queue *rbiosq;
+
+ rbiosh = hash_create();
+ if (!rbiosh)
+ debugx(1, DBG_ERR, "udpdtlsserverrd: malloc failed");
+
for (;;) {
FD_ZERO(&readfds);
FD_SET(s, &readfds);
@@ -112,34 +117,36 @@ void *udpdtlsserverrd(void *arg) {
debug(DBG_WARN, "udpdtlsserverrd: recv failed");
continue;
}
- conf = find_clconf(RAD_DTLS, (struct sockaddr *)&from, NULL);
- if (!conf) {
- debug(DBG_WARN, "udpdtlsserverrd: got packet from wrong or unknown DTLS peer %s, ignoring", addr2string((struct sockaddr *)&from, fromlen));
- recv(s, buf, 4, 0);
+ rbiosq = hash_read(rbiosh, &from, fromlen);
+ if (rbiosq) {
+ if (udp2bio(s, rbiosq, cnt))
+ debug(DBG_DBG, "udpdtlsserverrd: got DTLS in UDP from %s", addr2string((struct sockaddr *)&from, fromlen));
continue;
}
-
- node = list_first(conf->clients);
- if (node)
- client = (struct client *)node->data;
- else {
- client = addclient(conf);
- if (!client) {
- recv(s, buf, 4, 0);
- continue;
- }
- client->sock = s;
- memcpy(&client->addr, &from, fromlen);
- if (pthread_create(&dtlsserverth, NULL, dtlsservernew, (void *)client)) {
- debug(DBG_ERR, "udpdtlsserverrd: pthread_create failed");
- removeclient(client);
- recv(s, buf, 4, 0);
+
+ /* from new source, new client? */
+ client = malloc(sizeof(struct client));
+ if (!client)
+ continue;
+ client->rbios = rbiosq = newqueue();
+ if (!hash_insert(rbiosh, &from, fromlen, rbiosq)) {
+ free(client);
+ removequeue(rbiosq);
+ continue;
+ }
+ client->sock = s;
+ memcpy(&client->addr, &from, fromlen);
+
+ if (udp2bio(s, rbiosq, cnt)) {
+ debug(DBG_DBG, "udpdtlsserverrd: got DTLS in UDP from %s", addr2string((struct sockaddr *)&from, fromlen));
+ if (!pthread_create(&dtlsserverth, NULL, dtlsservernew, (void *)client)) {
+ pthread_detach(dtlsserverth);
continue;
}
- pthread_detach(dtlsserverth);
+ debug(DBG_ERR, "udpdtlsserverrd: pthread_create failed");
}
- if (udp2bio(s, client->rbios, cnt))
- debug(DBG_DBG, "udpdtlsserverrd: got DTLS in UDP from %s", addr2string((struct sockaddr *)&from, fromlen));
+ free(client);
+ freebios(hash_extract(rbiosh, &from, fromlen));
}
}
@@ -323,26 +330,56 @@ SSL *dtlsacccon(uint8_t acc, SSL_CTX *ctx, int s, struct sockaddr *addr, struct
}
void *dtlsservernew(void *arg) {
- struct client *client = (struct client *)arg;
+ struct client *client, *clpar = (struct client *)arg;
+ struct clsrvconf *conf;
+ struct list_node *cur = NULL;
+ int s;
+ SSL *ssl = NULL;
X509 *cert = NULL;
+ struct queue *rbios;
+ struct sockaddr_storage addr;
+
+ s = clpar->sock;
+ rbios = clpar->rbios;
+ addr = clpar->addr;
+ free(clpar);
+
+ conf = find_clconf(RAD_DTLS, (struct sockaddr *)&addr, NULL);
+ if (conf) {
+ ssl = dtlsacccon(1, conf->ssl_ctx, s, (struct sockaddr *)&addr, rbios);
+ if (!ssl)
+ goto exit;
+ cert = verifytlscert(ssl);
+ if (!cert)
+ goto exit;
+ }
+
+ while (conf) {
+ if (verifyconfcert(cert, conf)) {
+ X509_free(cert);
+ client = addclient(conf);
+ if (client) {
+ client->sock = s;
+ client->rbios = rbios;
+ client->addr = addr;
+ client->ssl = ssl;
+ dtlsserverrd(client);
+ removeclient(client);
+ } else {
+ debug(DBG_WARN, "dtlsservernew: failed to create new client instance");
+ }
+ goto exit;
+ }
+ conf = find_clconf(RAD_DTLS, (struct sockaddr *)&client->addr, &cur);
+ }
+ debug(DBG_WARN, "dtlsservernew: ignoring request, no matching TLS client");
- client->ssl = dtlsacccon(1, client->conf->ssl_ctx, client->sock, (struct sockaddr *)&client->addr, client->rbios);
- if (!client->ssl)
- goto exit;
- cert = verifytlscert(client->ssl);
- if (!cert)
- goto exit;
- if (verifyconfcert(cert, client->conf)) {
- X509_free(cert);
- dtlsserverrd(client);
- removeclient(client);
- } else
- debug(DBG_WARN, "dtlsservernew: ignoring request, certificate validation failed");
if (cert)
X509_free(cert);
exit:
- SSL_free(client->ssl);
+ /* mark rbios for removal, to be removed by udpdtlsserverrd()*/
+ SSL_free(ssl);
ERR_remove_state(0);
pthread_exit(NULL);
}
@@ -474,11 +511,6 @@ void *dtlsclientrd(void *arg) {
}
}
-void addclientdtls(struct client *client) {
- client->replyq = newqueue();
- client->rbios = newqueue();
-}
-
void addserverextradtls(struct clsrvconf *conf) {
switch (conf->addrinfo->ai_family) {
case AF_INET:
diff --git a/dtls.h b/dtls.h
index af9054d..3005e18 100644
--- a/dtls.h
+++ b/dtls.h
@@ -12,6 +12,5 @@ void *dtlsservernew(void *arg);
void *dtlsclientrd(void *arg);
void *udpdtlsclientrd(void *arg);
int clientradputdtls(struct server *server, unsigned char *rad);
-void addclientdtls(struct client *client);
void addserverextradtls(struct clsrvconf *conf);
void initextradtls();
diff --git a/hash.c b/hash.c
index ea36860..dd27f77 100644
--- a/hash.c
+++ b/hash.c
@@ -92,3 +92,25 @@ void *hash_read(struct hash *h, void *key, uint32_t keylen) {
pthread_mutex_unlock(&h->mutex);
return NULL;
}
+
+/* extracts entry from hash */
+void *hash_extract(struct hash *h, void *key, uint32_t keylen) {
+ struct list_node *ln;
+ struct entry *e;
+
+ if (!h)
+ return 0;
+ pthread_mutex_lock(&h->mutex);
+ for (ln = list_first(h->hashlist); ln; ln = list_next(ln)) {
+ e = (struct entry *)ln->data;
+ if (e->keylen == keylen && !memcmp(e->key, key, keylen)) {
+ free(e->key);
+ list_removedata(h->hashlist, e);
+ free(e);
+ pthread_mutex_unlock(&h->mutex);
+ return e->data;
+ }
+ }
+ pthread_mutex_unlock(&h->mutex);
+ return NULL;
+}
diff --git a/hash.h b/hash.h
index f9268ea..dbf9543 100644
--- a/hash.h
+++ b/hash.h
@@ -24,3 +24,6 @@ int hash_insert(struct hash *hash, void *key, uint32_t keylen, void *data);
/* reads entry from hash */
void *hash_read(struct hash *hash, void *key, uint32_t keylen);
+
+/* extracts (read and remove) entry from hash */
+void *hash_extract(struct hash *hash, void *key, uint32_t keylen);
diff --git a/radsecproxy.c b/radsecproxy.c
index c97e7ed..50bdd20 100644
--- a/radsecproxy.c
+++ b/radsecproxy.c
@@ -155,7 +155,7 @@ static const struct protodefs protodefs[] = {
dtlsconnect, /* connecter */
dtlsclientrd, /* clientconnreader */
clientradputdtls, /* clientradput */
- addclientdtls, /* addclient */
+ NULL, /* addclient */
addserverextradtls, /* addserverextra */
initextradtls /* initextra */
},
@@ -528,7 +528,9 @@ struct queue *newqueue() {
void removequeue(struct queue *q) {
struct list_node *entry;
-
+
+ if (!q)
+ return;
pthread_mutex_lock(&q->mutex);
for (entry = list_first(q->entries); entry; entry = list_next(entry))
free(((struct reply *)entry)->buf);
@@ -536,6 +538,7 @@ void removequeue(struct queue *q) {
pthread_cond_destroy(&q->cond);
pthread_mutex_unlock(&q->mutex);
pthread_mutex_destroy(&q->mutex);
+ free(q);
}
void freebios(struct queue *q) {
@@ -577,8 +580,6 @@ void removeclient(struct client *client) {
if (!client || !client->conf->clients)
return;
removequeue(client->replyq);
- if (client->rbios)
- freebios(client->rbios);
list_removedata(client->conf->clients, client);
free(client);
}
diff --git a/radsecproxy.h b/radsecproxy.h
index 2546470..e9f3bed 100644
--- a/radsecproxy.h
+++ b/radsecproxy.h
@@ -208,6 +208,8 @@ struct client *addclient(struct clsrvconf *conf);
void removeclient(struct client *client);
void removeclientrqs(struct client *client);
struct queue *newqueue();
+void removequeue(struct queue *q);
+void freebios(struct queue *q);
int radsrv(struct request *rq);
X509 *verifytlscert(SSL *ssl);
int verifyconfcert(X509 *cert, struct clsrvconf *conf);
generated by cgit v1.1 at 2025-10-31 13:16:10 +0000