Author: rjung
Date: Thu Jan 24 15:20:49 2019
New Revision: 1852036
URL: http://svn.apache.org/viewvc?rev=1852036&view=rev
Log:
Fix crashes due to dublicate pool destruction,
once via the parent pool and once later via
the Finalizer.
Crash is new in 1.2.20 due to the use of a new
child pool to fix a memleak issue.
Hopefully this fix here does not introduce a
new memleak.
Modified:
tomcat/native/trunk/native/include/ssl_private.h
tomcat/native/trunk/native/src/ssl.c
tomcat/native/trunk/native/src/sslutils.c
Modified: tomcat/native/trunk/native/include/ssl_private.h
URL:
http://svn.apache.org/viewvc/tomcat/native/trunk/native/include/ssl_private.h?rev=1852036&r1=1852035&r2=1852036&view=diff
==============================================================================
--- tomcat/native/trunk/native/include/ssl_private.h (original)
+++ tomcat/native/trunk/native/include/ssl_private.h Thu Jan 24 15:20:49 2019
@@ -360,13 +360,16 @@ typedef struct {
/*
* Additional Functions
*/
-void SSL_init_app_data2_3_idx(void);
+void SSL_init_app_data_idx(void);
/* The app_data2 is used to store the tcn_ssl_ctxt_t pointer for the SSL
instance. */
void *SSL_get_app_data2(SSL *);
void SSL_set_app_data2(SSL *, void *);
/* The app_data3 is used to store the handshakeCount pointer for the SSL
instance. */
void *SSL_get_app_data3(const SSL *);
void SSL_set_app_data3(SSL *, void *);
+/* The app_data4 is used to store the destroyCount pointer for the SSL
instance. */
+void *SSL_get_app_data4(const SSL *);
+void SSL_set_app_data4(SSL *, void *);
int SSL_password_prompt(tcn_pass_cb_t *);
int SSL_password_callback(char *, int, int, void *);
void SSL_BIO_close(BIO *);
Modified: tomcat/native/trunk/native/src/ssl.c
URL:
http://svn.apache.org/viewvc/tomcat/native/trunk/native/src/ssl.c?rev=1852036&r1=1852035&r2=1852036&view=diff
==============================================================================
--- tomcat/native/trunk/native/src/ssl.c (original)
+++ tomcat/native/trunk/native/src/ssl.c Thu Jan 24 15:20:49 2019
@@ -822,8 +822,8 @@ TCN_IMPLEMENT_CALL(jint, SSL, initialize
* low entropy seed.
*/
SSL_rand_seed(NULL);
- /* For SSL_get_app_data2() and SSL_get_app_data3() at request time */
- SSL_init_app_data2_3_idx();
+ /* For SSL_get_app_data2(), SSL_get_app_data3() and SSL_get_app_data4() at
request time */
+ SSL_init_app_data_idx();
init_dh_params();
#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
@@ -1273,11 +1273,27 @@ static void ssl_info_callback(const SSL
}
}
+static apr_status_t ssl_con_pool_cleanup(void *data)
+{
+ SSL *ssl = (SSL*) data;
+ int *destroyCount;
+
+ TCN_ASSERT(ssl != 0);
+
+ destroyCount = SSL_get_app_data4(ssl);
+ if (destroyCount != NULL) {
+ ++(*destroyCount);
+ }
+
+ return APR_SUCCESS;
+}
+
TCN_IMPLEMENT_CALL(jlong /* SSL * */, SSL, newSSL)(TCN_STDARGS,
jlong ctx /* tcn_ssl_ctxt_t
* */,
jboolean server) {
tcn_ssl_ctxt_t *c = J2P(ctx, tcn_ssl_ctxt_t *);
int *handshakeCount = malloc(sizeof(int));
+ int *destroyCount = malloc(sizeof(int));
SSL *ssl;
apr_pool_t *p = NULL;
tcn_ssl_conn_t *con;
@@ -1289,6 +1305,7 @@ TCN_IMPLEMENT_CALL(jlong /* SSL * */, SS
ssl = SSL_new(c->ctx);
if (ssl == NULL) {
free(handshakeCount);
+ free(destroyCount);
tcn_ThrowException(e, "cannot create new ssl");
return 0;
}
@@ -1296,6 +1313,7 @@ TCN_IMPLEMENT_CALL(jlong /* SSL * */, SS
apr_pool_create(&p, c->pool);
if (p == NULL) {
free(handshakeCount);
+ free(destroyCount);
SSL_free(ssl);
tcn_ThrowAPRException(e, apr_get_os_error());
return 0;
@@ -1303,6 +1321,7 @@ TCN_IMPLEMENT_CALL(jlong /* SSL * */, SS
if ((con = apr_pcalloc(p, sizeof(tcn_ssl_conn_t))) == NULL) {
free(handshakeCount);
+ free(destroyCount);
SSL_free(ssl);
apr_pool_destroy(p);
tcn_ThrowAPRException(e, apr_get_os_error());
@@ -1317,6 +1336,10 @@ TCN_IMPLEMENT_CALL(jlong /* SSL * */, SS
*handshakeCount = 0;
SSL_set_app_data3(ssl, handshakeCount);
+ /* Store the destroyCount in the SSL instance. */
+ *destroyCount = 0;
+ SSL_set_app_data4(ssl, destroyCount);
+
/* Add callback to keep track of handshakes. */
SSL_CTX_set_info_callback(c->ctx, ssl_info_callback);
@@ -1333,6 +1356,11 @@ TCN_IMPLEMENT_CALL(jlong /* SSL * */, SS
/* Store for later usage in SSL_callback_SSL_verify */
SSL_set_app_data2(ssl, c);
SSL_set_app_data(ssl, con);
+ /* Register cleanup that prevent double destruction */
+ apr_pool_cleanup_register(con->pool, (const void *)ssl,
+ ssl_con_pool_cleanup,
+ apr_pool_cleanup_null);
+
return P2J(ssl);
}
@@ -1430,15 +1458,21 @@ TCN_IMPLEMENT_CALL(void, SSL, freeSSL)(T
jlong ssl /* SSL * */) {
SSL *ssl_ = J2P(ssl, SSL *);
int *handshakeCount = SSL_get_app_data3(ssl_);
+ int *destroyCount = SSL_get_app_data4(ssl_);
tcn_ssl_conn_t *con = SSL_get_app_data(ssl_);
UNREFERENCED_STDARGS;
+ if (destroyCount != NULL) {
+ if (*destroyCount == 0) {
+ apr_pool_destroy(con->pool);
+ }
+ free(destroyCount);
+ }
if (handshakeCount != NULL) {
free(handshakeCount);
}
SSL_free(ssl_);
- apr_pool_destroy(con->pool);
}
/* Make a BIO pair (network and internal) for the provided SSL * and return
the network BIO */
Modified: tomcat/native/trunk/native/src/sslutils.c
URL:
http://svn.apache.org/viewvc/tomcat/native/trunk/native/src/sslutils.c?rev=1852036&r1=1852035&r2=1852036&view=diff
==============================================================================
--- tomcat/native/trunk/native/src/sslutils.c (original)
+++ tomcat/native/trunk/native/src/sslutils.c Thu Jan 24 15:20:49 2019
@@ -52,8 +52,9 @@ static int ssl_ocsp_request(X509 *cert,
*/
static int SSL_app_data2_idx = -1;
static int SSL_app_data3_idx = -1;
+static int SSL_app_data4_idx = -1;
-void SSL_init_app_data2_3_idx(void)
+void SSL_init_app_data_idx(void)
{
int i;
@@ -78,6 +79,15 @@ void SSL_init_app_data2_3_idx(void)
"Third Application Data for SSL",
NULL, NULL, NULL);
+ if (SSL_app_data4_idx > -1) {
+ return;
+ }
+
+ SSL_app_data4_idx =
+ SSL_get_ex_new_index(0,
+ "Fourth Application Data for SSL",
+ NULL, NULL, NULL);
+
}
void *SSL_get_app_data2(SSL *ssl)
@@ -102,6 +112,16 @@ void SSL_set_app_data3(SSL *ssl, void *a
SSL_set_ex_data(ssl, SSL_app_data3_idx, arg);
}
+void *SSL_get_app_data4(const SSL *ssl)
+{
+ return SSL_get_ex_data(ssl, SSL_app_data4_idx);
+}
+
+void SSL_set_app_data4(SSL *ssl, void *arg)
+{
+ SSL_set_ex_data(ssl, SSL_app_data4_idx, arg);
+}
+
/* Simple echo password prompting */
int SSL_password_prompt(tcn_pass_cb_t *data)
{
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