tor-browser

regress_ssl.c (31162B)

---

/*
* Copyright (c) 2009-2012 Niels Provos and Nick Mathewson
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

// Get rid of OSX 10.7 and greater deprecation warnings.
#if defined(__APPLE__) && defined(__clang__)
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
#endif

#ifdef _WIN32
#include <winsock2.h>
#include <windows.h>
#endif

#include "util-internal.h"

#ifndef _WIN32
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#endif

#include "event2/util.h"
#include "event2/event.h"
#include "event2/bufferevent_ssl.h"
#include "event2/bufferevent_struct.h"
#include "event2/buffer.h"
#include "event2/listener.h"

#include "regress.h"
#include "tinytest.h"
#include "tinytest_macros.h"

#include <openssl/err.h>
#include <openssl/pem.h>
#include "openssl-compat.h"

#include <string.h>
#ifdef _WIN32
#include <io.h>
#define read _read
#define write _write
#else
#include <unistd.h>
#endif

/* A pre-generated key, to save the cost of doing an RSA key generation step
* during the unit tests. It is published in this file, so you would have to
* be very foolish to consider using it in your own code. */
static const char KEY[] =
   "-----BEGIN RSA PRIVATE KEY-----\n"
   "MIIEogIBAAKCAQEAtK07Ili0dkJb79m/sFmHoVJTWyLoveXex2yX/BtUzzcvZEOu\n"
   "QLon/++5YOA48kzZm5K9mIwZkZhui1ZgJ5Bjq0LGAWTZGIn+NXjLFshPYvTKpOCW\n"
   "uzL0Ir0LXMsBLYJQ5A4FomLNxs4I3H/dhDSGy/rSiJB1B4w2xNiwPK08/VL3zZqk\n"
   "V+GsSvGIIkzhTMbqPJy9K8pqyjwOU2pgORS794yXciTGxWYjTDzJPgQ35YMDATaG\n"
   "jr4HHo1zxU/Lj0pndSUK5rKLYxYQ3Uc8B3AVYDl9CP/GbOoQ4LBzS68JjcAUyp6i\n"
   "6NfXlc2D9S9XgqVqwI+JqgJs0eW/+zPY2UEDWwIDAQABAoIBAD2HzV66FOM9YDAD\n"
   "2RtGskEHV2nvLpIVadRCsFPkPvK+2X3s6rgSbbLkwh4y3lHuSCGKTNVZyQ9jeSos\n"
   "xVxT+Q2HFQW+gYyw2gj91TQyDY8mzKhv8AVaqff2p5r3a7RC8CdqexK9UVUGL9Bg\n"
   "H2F5vfpTtkVZ5PEoGDLblNFlMiMW/t1SobUeBVx+Msco/xqk9lFv1A9nnepGy0Gi\n"
   "D+i6YNGTBsX22YhoCZl/ICxCL8lgqPei4FvBr9dBVh/jQgjuUBm2jz55p2r7+7Aw\n"
   "khmXHReejoVokQ2+htgSgZNKlKuDy710ZpBqnDi8ynQi82Y2qCpyg/p/xcER54B6\n"
   "hSftaiECgYEA2RkSoxU+nWk+BClQEUZRi88QK5W/M8oo1DvUs36hvPFkw3Jk/gz0\n"
   "fgd5bnA+MXj0Fc0QHvbddPjIkyoI/evq9GPV+JYIuH5zabrlI3Jvya8q9QpAcEDO\n"
   "KkL/O09qXVEW52S6l05nh4PLejyI7aTyTIN5nbVLac/+M8MY/qOjZksCgYEA1Q1o\n"
   "L8kjSavU2xhQmSgZb9W62Do60sa3e73ljrDPoiyvbExldpSdziFYxHBD/Rep0ePf\n"
   "eVSGS3VSwevt9/jSGo2Oa83TYYns9agBm03oR/Go/DukESdI792NsEM+PRFypVNy\n"
   "AohWRLj0UU6DV+zLKp0VBavtx0ATeLFX0eN17TECgYBI2O/3Bz7uhQ0JSm+SjFz6\n"
   "o+2SInp5P2G57aWu4VQWWY3tQ2p+EQzNaWam10UXRrXoxtmc+ktPX9e2AgnoYoyB\n"
   "myqGcpnUhqHlnZAb999o9r1cYidDQ4uqhLauSTSwwXAFDzjJYsa8o03Y440y6QFh\n"
   "CVD6yYXXqLJs3g96CqDexwKBgAHxq1+0QCQt8zVElYewO/svQhMzBNJjic0RQIT6\n"
   "zAo4yij80XgxhvcYiszQEW6/xobpw2JCCS+rFGQ8mOFIXfJsFD6blDAxp/3d2JXo\n"
   "MhRl+hrDGI4ng5zcsqxHEMxR2m/zwPiQ8eiSn3gWdVBaEsiCwmxY00ScKxFQ3PJH\n"
   "Vw4hAoGAdZLd8KfjjG6lg7hfpVqavstqVi9LOgkHeCfdjn7JP+76kYrgLk/XdkrP\n"
   "N/BHhtFVFjOi/mTQfQ5YfZImkm/1ePBy7437DT8BDkOxspa50kK4HPggHnU64h1w\n"
   "lhdEOj7mAgHwGwwVZWOgs9Lq6vfztnSuhqjha1daESY6kDscPIQ=\n"
   "-----END RSA PRIVATE KEY-----\n";

EVP_PKEY *
ssl_getkey(void)
{
EVP_PKEY *key;
BIO *bio;

/* new read-only BIO backed by KEY. */
bio = BIO_new_mem_buf((char*)KEY, -1);
tt_assert(bio);

key = PEM_read_bio_PrivateKey(bio,NULL,NULL,NULL);
BIO_free(bio);
tt_assert(key);

return key;
end:
return NULL;
}

X509 *
ssl_getcert(EVP_PKEY *key)
{
/* Dummy code to make a quick-and-dirty valid certificate with
   OpenSSL.  Don't copy this code into your own program! It does a
   number of things in a stupid and insecure way. */
X509 *x509 = NULL;
X509_NAME *name = NULL;
int nid;
time_t now = time(NULL);

tt_assert(key);

x509 = X509_new();
tt_assert(x509);
tt_assert(0 != X509_set_version(x509, 2));
tt_assert(0 != ASN1_INTEGER_set(X509_get_serialNumber(x509),
	(long)now));

name = X509_NAME_new();
tt_assert(name);
nid = OBJ_txt2nid("commonName");
tt_assert(NID_undef != nid);
tt_assert(0 != X509_NAME_add_entry_by_NID(
	    name, nid, MBSTRING_ASC, (unsigned char*)"example.com",
	    -1, -1, 0));

X509_set_subject_name(x509, name);
X509_set_issuer_name(x509, name);
X509_NAME_free(name);

X509_time_adj(X509_getm_notBefore(x509), 0, &now);
now += 3600;
X509_time_adj(X509_getm_notAfter(x509), 0, &now);
X509_set_pubkey(x509, key);
tt_assert(0 != X509_sign(x509, key, EVP_sha1()));

return x509;
end:
X509_free(x509);
X509_NAME_free(name);
return NULL;
}

static int disable_tls_11_and_12 = 0;
static SSL_CTX *the_ssl_ctx = NULL;

SSL_CTX *
get_ssl_ctx(void)
{
if (the_ssl_ctx)
	return the_ssl_ctx;
the_ssl_ctx = SSL_CTX_new(SSLv23_method());
if (!the_ssl_ctx)
	return NULL;
if (disable_tls_11_and_12) {
#ifdef SSL_OP_NO_TLSv1_2
	SSL_CTX_set_options(the_ssl_ctx, SSL_OP_NO_TLSv1_2);
#endif
#ifdef SSL_OP_NO_TLSv1_1
	SSL_CTX_set_options(the_ssl_ctx, SSL_OP_NO_TLSv1_1);
#endif
}
return the_ssl_ctx;
}

static int test_is_done;
static int n_connected;
static int got_close;
static int got_error;
static int got_timeout;
static int renegotiate_at = -1;
static int stop_when_connected;
static int pending_connect_events;
static struct event_base *exit_base;
static X509 *the_cert;
EVP_PKEY *the_key;

void
init_ssl(void)
{
#if (OPENSSL_VERSION_NUMBER < 0x10100000L) || \
(defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x20700000L)
SSL_library_init();
ERR_load_crypto_strings();
SSL_load_error_strings();
OpenSSL_add_all_algorithms();
if (SSLeay() != OPENSSL_VERSION_NUMBER) {
	TT_DECLARE("WARN",
		("Version mismatch for openssl: compiled with %lx but running with %lx",
		(unsigned long)OPENSSL_VERSION_NUMBER, (unsigned long)SSLeay()));
}
#endif
}

static void *
ssl_test_setup(const struct testcase_t *testcase)
{
init_ssl();

the_key = ssl_getkey();
EVUTIL_ASSERT(the_key);

the_cert = ssl_getcert(the_key);
EVUTIL_ASSERT(the_cert);

disable_tls_11_and_12 = 0;

return basic_test_setup(testcase);
}
static int
ssl_test_cleanup(const struct testcase_t *testcase, void *ptr)
{
int ret = basic_test_cleanup(testcase, ptr);
if (!ret) {
	return ret;
}

test_is_done = 0;
n_connected = 0;
got_close = 0;
got_error = 0;
got_timeout = 0;
renegotiate_at = -1;
stop_when_connected = 0;
pending_connect_events = 0;
exit_base = NULL;

X509_free(the_cert);
EVP_PKEY_free(the_key);

SSL_CTX_free(the_ssl_ctx);
the_ssl_ctx = NULL;

return 1;
}
const struct testcase_setup_t ssl_setup = {
ssl_test_setup, ssl_test_cleanup
};


/* ====================
  Here's a simple test: we read a number from the input, increment it, and
  reply, until we get to 1001.
*/

enum regress_openssl_type
{
REGRESS_OPENSSL_SOCKETPAIR = 1,
REGRESS_OPENSSL_FILTER = 2,
REGRESS_OPENSSL_RENEGOTIATE = 4,
REGRESS_OPENSSL_OPEN = 8,
REGRESS_OPENSSL_DIRTY_SHUTDOWN = 16,
REGRESS_OPENSSL_FD = 32,

REGRESS_OPENSSL_CLIENT = 64,
REGRESS_OPENSSL_SERVER = 128,

REGRESS_OPENSSL_FREED = 256,
REGRESS_OPENSSL_TIMEOUT = 512,
REGRESS_OPENSSL_SLEEP = 1024,

REGRESS_OPENSSL_CLIENT_WRITE = 2048,

REGRESS_DEFERRED_CALLBACKS = 4096,
};

static void
bufferevent_openssl_check_fd(struct bufferevent *bev, int filter)
{
tt_fd_op(bufferevent_getfd(bev), !=, EVUTIL_INVALID_SOCKET);
tt_fd_op(bufferevent_setfd(bev, EVUTIL_INVALID_SOCKET), ==, 0);
if (filter) {
	tt_fd_op(bufferevent_getfd(bev), !=, EVUTIL_INVALID_SOCKET);
} else {
	tt_fd_op(bufferevent_getfd(bev), ==, EVUTIL_INVALID_SOCKET);
}

end:
;
}
static void
bufferevent_openssl_check_freed(struct bufferevent *bev)
{
tt_int_op(event_pending(&bev->ev_read, EVLIST_ALL, NULL), ==, 0);
tt_int_op(event_pending(&bev->ev_write, EVLIST_ALL, NULL), ==, 0);

end:
;
}

static void
free_on_cb(struct bufferevent *bev, void *ctx)
{
TT_BLATHER(("free_on_cb: %p", bev));
bufferevent_free(bev);
}

static void
respond_to_number(struct bufferevent *bev, void *ctx)
{
struct evbuffer *b = bufferevent_get_input(bev);
char *line;
int n;

enum regress_openssl_type type;
type = (enum regress_openssl_type)ctx;

line = evbuffer_readln(b, NULL, EVBUFFER_EOL_LF);
if (! line)
	return;
n = atoi(line);
if (n <= 0)
	TT_FAIL(("Bad number: %s", line));
free(line);
TT_BLATHER(("The number was %d", n));
if (n == 1001) {
	++test_is_done;
	bufferevent_free(bev); /* Should trigger close on other side. */
	return;
}
if ((type & REGRESS_OPENSSL_CLIENT) && n == renegotiate_at) {
	SSL_renegotiate(bufferevent_openssl_get_ssl(bev));
}
++n;
evbuffer_add_printf(bufferevent_get_output(bev),
    "%d\n", n);
TT_BLATHER(("Done reading; now writing."));
bufferevent_enable(bev, EV_WRITE);
bufferevent_disable(bev, EV_READ);
}

static void
done_writing_cb(struct bufferevent *bev, void *ctx)
{
struct evbuffer *b = bufferevent_get_output(bev);
if (evbuffer_get_length(b))
	return;
TT_BLATHER(("Done writing."));
bufferevent_disable(bev, EV_WRITE);
bufferevent_enable(bev, EV_READ);
}

static void
eventcb(struct bufferevent *bev, short what, void *ctx)
{
X509 *peer_cert = NULL;
enum regress_openssl_type type;

type = (enum regress_openssl_type)ctx;

TT_BLATHER(("Got event %d", (int)what));
if (what & BEV_EVENT_CONNECTED) {
	SSL *ssl;
	++n_connected;
	ssl = bufferevent_openssl_get_ssl(bev);
	tt_assert(ssl);
	peer_cert = SSL_get_peer_certificate(ssl);
	if (type & REGRESS_OPENSSL_SERVER) {
		tt_assert(peer_cert == NULL);
	} else {
		tt_assert(peer_cert != NULL);
	}
	if (stop_when_connected) {
		if (--pending_connect_events == 0)
			event_base_loopexit(exit_base, NULL);
	}

	if ((type & REGRESS_OPENSSL_CLIENT_WRITE) && (type & REGRESS_OPENSSL_CLIENT))
		evbuffer_add_printf(bufferevent_get_output(bev), "1\n");
} else if (what & BEV_EVENT_EOF) {
	TT_BLATHER(("Got a good EOF"));
	++got_close;
	if (type & REGRESS_OPENSSL_FD) {
		bufferevent_openssl_check_fd(bev, type & REGRESS_OPENSSL_FILTER);
	}
	if (type & REGRESS_OPENSSL_FREED) {
		bufferevent_openssl_check_freed(bev);
	}
	bufferevent_free(bev);
} else if (what & BEV_EVENT_ERROR) {
	TT_BLATHER(("Got an error."));
	++got_error;
	if (type & REGRESS_OPENSSL_FD) {
		bufferevent_openssl_check_fd(bev, type & REGRESS_OPENSSL_FILTER);
	}
	if (type & REGRESS_OPENSSL_FREED) {
		bufferevent_openssl_check_freed(bev);
	}
	bufferevent_free(bev);
} else if (what & BEV_EVENT_TIMEOUT) {
	TT_BLATHER(("Got timeout."));
	++got_timeout;
	if (type & REGRESS_OPENSSL_FD) {
		bufferevent_openssl_check_fd(bev, type & REGRESS_OPENSSL_FILTER);
	}
	if (type & REGRESS_OPENSSL_FREED) {
		bufferevent_openssl_check_freed(bev);
	}
	bufferevent_free(bev);
}

end:
if (peer_cert)
	X509_free(peer_cert);
}

static void
open_ssl_bufevs(struct bufferevent **bev1_out, struct bufferevent **bev2_out,
   struct event_base *base, int is_open, int flags, SSL *ssl1, SSL *ssl2,
   evutil_socket_t *fd_pair, struct bufferevent **underlying_pair,
   enum regress_openssl_type type)
{
int state1 = is_open ? BUFFEREVENT_SSL_OPEN :BUFFEREVENT_SSL_CONNECTING;
int state2 = is_open ? BUFFEREVENT_SSL_OPEN :BUFFEREVENT_SSL_ACCEPTING;
int dirty_shutdown = type & REGRESS_OPENSSL_DIRTY_SHUTDOWN;
if (fd_pair) {
	*bev1_out = bufferevent_openssl_socket_new(
		base, fd_pair[0], ssl1, state1, flags);
	*bev2_out = bufferevent_openssl_socket_new(
		base, fd_pair[1], ssl2, state2, flags);
} else {
	*bev1_out = bufferevent_openssl_filter_new(
		base, underlying_pair[0], ssl1, state1, flags);
	*bev2_out = bufferevent_openssl_filter_new(
		base, underlying_pair[1], ssl2, state2, flags);

}
bufferevent_setcb(*bev1_out, respond_to_number, done_writing_cb,
    eventcb, (void*)(REGRESS_OPENSSL_CLIENT | (long)type));
bufferevent_setcb(*bev2_out, respond_to_number, done_writing_cb,
    eventcb, (void*)(REGRESS_OPENSSL_SERVER | (long)type));

bufferevent_openssl_set_allow_dirty_shutdown(*bev1_out, dirty_shutdown);
bufferevent_openssl_set_allow_dirty_shutdown(*bev2_out, dirty_shutdown);
}

static void
regress_bufferevent_openssl(void *arg)
{
struct basic_test_data *data = arg;

struct bufferevent *bev1, *bev2;
SSL *ssl1, *ssl2;
int flags = BEV_OPT_DEFER_CALLBACKS;
struct bufferevent *bev_ll[2] = { NULL, NULL };
evutil_socket_t *fd_pair = NULL;

enum regress_openssl_type type;
type = (enum regress_openssl_type)data->setup_data;

if (type & REGRESS_OPENSSL_RENEGOTIATE) {
	if (OPENSSL_VERSION_NUMBER >= 0x10001000 &&
	    OPENSSL_VERSION_NUMBER <  0x1000104f) {
		/* 1.0.1 up to 1.0.1c has a bug where TLS1.1 and 1.2
		 * can't renegotiate with themselves. Disable. */
		disable_tls_11_and_12 = 1;
	}
	renegotiate_at = 600;
}

ssl1 = SSL_new(get_ssl_ctx());
ssl2 = SSL_new(get_ssl_ctx());

SSL_use_certificate(ssl2, the_cert);
SSL_use_PrivateKey(ssl2, the_key);

if (!(type & REGRESS_OPENSSL_OPEN))
	flags |= BEV_OPT_CLOSE_ON_FREE;

if (!(type & REGRESS_OPENSSL_FILTER)) {
	tt_assert(type & REGRESS_OPENSSL_SOCKETPAIR);
	fd_pair = data->pair;
} else {
	bev_ll[0] = bufferevent_socket_new(data->base, data->pair[0],
	    BEV_OPT_CLOSE_ON_FREE);
	bev_ll[1] = bufferevent_socket_new(data->base, data->pair[1],
	    BEV_OPT_CLOSE_ON_FREE);
}

open_ssl_bufevs(&bev1, &bev2, data->base, 0, flags, ssl1, ssl2,
    fd_pair, bev_ll, type);

if (!(type & REGRESS_OPENSSL_FILTER)) {
	tt_fd_op(bufferevent_getfd(bev1), ==, data->pair[0]);
} else {
	tt_ptr_op(bufferevent_get_underlying(bev1), ==, bev_ll[0]);
}

if (type & REGRESS_OPENSSL_OPEN) {
	pending_connect_events = 2;
	stop_when_connected = 1;
	exit_base = data->base;
	event_base_dispatch(data->base);
	/* Okay, now the renegotiation is done.  Make new
	 * bufferevents to test opening in BUFFEREVENT_SSL_OPEN */
	flags |= BEV_OPT_CLOSE_ON_FREE;
	bufferevent_free(bev1);
	bufferevent_free(bev2);
	bev1 = bev2 = NULL;
	open_ssl_bufevs(&bev1, &bev2, data->base, 1, flags, ssl1, ssl2,
	    fd_pair, bev_ll, type);
}

if (!(type & REGRESS_OPENSSL_TIMEOUT)) {
	bufferevent_enable(bev1, EV_READ|EV_WRITE);
	bufferevent_enable(bev2, EV_READ|EV_WRITE);

	if (!(type & REGRESS_OPENSSL_CLIENT_WRITE))
		evbuffer_add_printf(bufferevent_get_output(bev1), "1\n");

	event_base_dispatch(data->base);

	tt_assert(test_is_done == 1);
	tt_assert(n_connected == 2);

	/* We don't handle shutdown properly yet */
	if (type & REGRESS_OPENSSL_DIRTY_SHUTDOWN) {
		tt_int_op(got_close, ==, 1);
		tt_int_op(got_error, ==, 0);
	} else {
		tt_int_op(got_error, ==, 1);
	}
	tt_int_op(got_timeout, ==, 0);
} else {
	struct timeval t = { 2, 0 };

	bufferevent_enable(bev1, EV_READ|EV_WRITE);
	bufferevent_disable(bev2, EV_READ|EV_WRITE);

	bufferevent_set_timeouts(bev1, &t, &t);

	if (!(type & REGRESS_OPENSSL_CLIENT_WRITE))
		evbuffer_add_printf(bufferevent_get_output(bev1), "1\n");

	event_base_dispatch(data->base);

	tt_assert(test_is_done == 0);
	tt_assert(n_connected == 0);

	tt_int_op(got_close, ==, 0);
	tt_int_op(got_error, ==, 0);
	tt_int_op(got_timeout, ==, 1);

	bufferevent_free(bev2);
}

end:
return;
}

static void
acceptcb_deferred(evutil_socket_t fd, short events, void *arg)
{
struct bufferevent *bev = arg;
bufferevent_enable(bev, EV_READ|EV_WRITE);
}
static void
acceptcb(struct evconnlistener *listener, evutil_socket_t fd,
   struct sockaddr *addr, int socklen, void *arg)
{
struct basic_test_data *data = arg;
struct bufferevent *bev;
enum regress_openssl_type type;
SSL *ssl = SSL_new(get_ssl_ctx());

type = (enum regress_openssl_type)data->setup_data;

SSL_use_certificate(ssl, the_cert);
SSL_use_PrivateKey(ssl, the_key);

bev = bufferevent_openssl_socket_new(
	data->base, fd, ssl, BUFFEREVENT_SSL_ACCEPTING,
	BEV_OPT_CLOSE_ON_FREE|BEV_OPT_DEFER_CALLBACKS);
tt_assert(bev);

bufferevent_setcb(bev, respond_to_number, NULL, eventcb,
    (void*)(REGRESS_OPENSSL_SERVER));

if (type & REGRESS_OPENSSL_SLEEP) {
	struct timeval when = { 1, 0 };
	event_base_once(data->base, -1, EV_TIMEOUT,
	    acceptcb_deferred, bev, &when);
	bufferevent_disable(bev, EV_READ|EV_WRITE);
} else {
	bufferevent_enable(bev, EV_READ|EV_WRITE);
}

/* Only accept once, then disable ourself. */
evconnlistener_disable(listener);

end:
;
}

struct rwcount
{
evutil_socket_t fd;
size_t read;
size_t write;
};
static int
bio_rwcount_new(BIO *b)
{
BIO_set_init(b, 0);
BIO_set_data(b, NULL);
return 1;
}
static int
bio_rwcount_free(BIO *b)
{
TT_BLATHER(("bio_rwcount_free: %p", b));
if (!b)
	return 0;
if (BIO_get_shutdown(b)) {
	BIO_set_init(b, 0);
	BIO_set_data(b, NULL);
}
return 1;
}
static int
bio_rwcount_read(BIO *b, char *out, int outlen)
{
struct rwcount *rw = BIO_get_data(b);
ev_ssize_t ret = recv(rw->fd, out, outlen, 0);
++rw->read;
if (ret == -1 && EVUTIL_ERR_RW_RETRIABLE(EVUTIL_SOCKET_ERROR())) {
	BIO_set_retry_read(b);
}
return ret;
}
static int
bio_rwcount_write(BIO *b, const char *in, int inlen)
{
struct rwcount *rw = BIO_get_data(b);
ev_ssize_t ret = send(rw->fd, in, inlen, 0);
++rw->write;
if (ret == -1 && EVUTIL_ERR_RW_RETRIABLE(EVUTIL_SOCKET_ERROR())) {
	BIO_set_retry_write(b);
}
return ret;
}
static long
bio_rwcount_ctrl(BIO *b, int cmd, long num, void *ptr)
{
struct rwcount *rw = BIO_get_data(b);
long ret = 0;
switch (cmd) {
case BIO_C_GET_FD:
	ret = rw->fd;
	break;
case BIO_CTRL_GET_CLOSE:
	ret = BIO_get_shutdown(b);
	break;
case BIO_CTRL_SET_CLOSE:
	BIO_set_shutdown(b, (int)num);
	break;
case BIO_CTRL_PENDING:
	ret = 0;
	break;
case BIO_CTRL_WPENDING:
	ret = 0;
	break;
case BIO_CTRL_DUP:
case BIO_CTRL_FLUSH:
	ret = 1;
	break;
}
return ret;
}
static int
bio_rwcount_puts(BIO *b, const char *s)
{
return bio_rwcount_write(b, s, strlen(s));
}
#define BIO_TYPE_LIBEVENT_RWCOUNT 0xff1
static BIO_METHOD *methods_rwcount;

static BIO_METHOD *
BIO_s_rwcount(void)
{
if (methods_rwcount == NULL) {
	methods_rwcount = BIO_meth_new(BIO_TYPE_LIBEVENT_RWCOUNT, "rwcount");
	if (methods_rwcount == NULL)
		return NULL;
	BIO_meth_set_write(methods_rwcount, bio_rwcount_write);
	BIO_meth_set_read(methods_rwcount, bio_rwcount_read);
	BIO_meth_set_puts(methods_rwcount, bio_rwcount_puts);
	BIO_meth_set_ctrl(methods_rwcount, bio_rwcount_ctrl);
	BIO_meth_set_create(methods_rwcount, bio_rwcount_new);
	BIO_meth_set_destroy(methods_rwcount, bio_rwcount_free);
}
return methods_rwcount;
}
static BIO *
BIO_new_rwcount(int close_flag)
{
BIO *result;
if (!(result = BIO_new(BIO_s_rwcount())))
	return NULL;
BIO_set_init(result, 1);
BIO_set_data(result,  NULL);
BIO_set_shutdown(result, !!close_flag);
return result;
}

static void
regress_bufferevent_openssl_connect(void *arg)
{
struct basic_test_data *data = arg;

struct event_base *base = data->base;

struct evconnlistener *listener;
struct bufferevent *bev;
struct sockaddr_in sin;
struct sockaddr_storage ss;
ev_socklen_t slen;
SSL *ssl;
struct rwcount rw = { -1, 0, 0 };
enum regress_openssl_type type;

type = (enum regress_openssl_type)data->setup_data;

memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = htonl(0x7f000001);

memset(&ss, 0, sizeof(ss));
slen = sizeof(ss);

listener = evconnlistener_new_bind(base, acceptcb, data,
    LEV_OPT_CLOSE_ON_FREE|LEV_OPT_REUSEABLE,
    -1, (struct sockaddr *)&sin, sizeof(sin));

tt_assert(listener);
tt_assert(evconnlistener_get_fd(listener) >= 0);

ssl = SSL_new(get_ssl_ctx());
tt_assert(ssl);

bev = bufferevent_openssl_socket_new(
	data->base, -1, ssl,
	BUFFEREVENT_SSL_CONNECTING,
	BEV_OPT_CLOSE_ON_FREE|BEV_OPT_DEFER_CALLBACKS);
tt_assert(bev);

bufferevent_setcb(bev, respond_to_number, free_on_cb, eventcb,
    (void*)(REGRESS_OPENSSL_CLIENT));

tt_assert(getsockname(evconnlistener_get_fd(listener),
	(struct sockaddr*)&ss, &slen) == 0);
tt_assert(slen == sizeof(struct sockaddr_in));
tt_int_op(((struct sockaddr*)&ss)->sa_family, ==, AF_INET);

tt_assert(0 ==
    bufferevent_socket_connect(bev, (struct sockaddr*)&ss, slen));
/* Possible only when we have fd, since be_openssl can and will overwrite
 * bio otherwise before */
if (type & REGRESS_OPENSSL_SLEEP) {
	BIO *bio;

	rw.fd = bufferevent_getfd(bev);
	bio = BIO_new_rwcount(0);
	tt_assert(bio);
	BIO_set_data(bio, &rw);
	SSL_set_bio(ssl, bio, bio);
}
evbuffer_add_printf(bufferevent_get_output(bev), "1\n");
bufferevent_enable(bev, EV_READ|EV_WRITE);

event_base_dispatch(base);

tt_int_op(rw.read, <=, 100);
tt_int_op(rw.write, <=, 100);
end:
evconnlistener_free(listener);
}

struct wm_context
{
int server;
int flags;
struct evbuffer *data;
size_t to_read;
size_t wm_high;
size_t limit;
size_t get;
struct bufferevent *bev;
struct wm_context *neighbour;
};
static void
wm_transfer(struct bufferevent *bev, void *arg)
{
struct wm_context *ctx = arg;
struct evbuffer *in  = bufferevent_get_input(bev);
struct evbuffer *out = bufferevent_get_output(bev);
size_t len = evbuffer_get_length(in);
size_t drain = len < ctx->to_read ? len : ctx->to_read;

if (ctx->get >= ctx->limit) {
	TT_BLATHER(("wm_transfer-%s(%p): break",
		ctx->server ? "server" : "client", bev));
	bufferevent_setcb(bev, NULL, NULL, NULL, NULL);
	bufferevent_disable(bev, EV_READ);
	if (ctx->neighbour->get >= ctx->neighbour->limit) {
		event_base_loopbreak(bufferevent_get_base(bev));
	}
} else {
	ctx->get += drain;
	evbuffer_drain(in, drain);
}

TT_BLATHER(("wm_transfer-%s(%p): "
	"in: " EV_SIZE_FMT ", "
	"out: " EV_SIZE_FMT ", "
	"got: " EV_SIZE_FMT "",
	ctx->server ? "server" : "client", bev,
	evbuffer_get_length(in),
	evbuffer_get_length(out),
	ctx->get));

evbuffer_add_buffer_reference(out, ctx->data);
}
static void
wm_eventcb(struct bufferevent *bev, short what, void *arg)
{
struct wm_context *ctx = arg;
TT_BLATHER(("wm_eventcb-%s(%p): %i",
	ctx->server ? "server" : "client", bev, what));
if (what & BEV_EVENT_CONNECTED) {
} else {
	ctx->get = 0;
}
}
static void
wm_acceptcb(struct evconnlistener *listener, evutil_socket_t fd,
   struct sockaddr *addr, int socklen, void *arg)
{
struct wm_context *ctx = arg;
struct bufferevent *bev;
struct event_base *base = evconnlistener_get_base(listener);
SSL *ssl = SSL_new(get_ssl_ctx());

SSL_use_certificate(ssl, the_cert);
SSL_use_PrivateKey(ssl, the_key);

bev = bufferevent_openssl_socket_new(
	base, fd, ssl, BUFFEREVENT_SSL_ACCEPTING, ctx->flags);

TT_BLATHER(("wm_transfer-%s(%p): accept",
	ctx->server ? "server" : "client", bev));

bufferevent_setwatermark(bev, EV_READ, 0, ctx->wm_high);
bufferevent_setcb(bev, wm_transfer, NULL, wm_eventcb, ctx);
bufferevent_enable(bev, EV_READ|EV_WRITE);
ctx->bev = bev;

/* Only accept once, then disable ourself. */
evconnlistener_disable(listener);
}
static void
regress_bufferevent_openssl_wm(void *arg)
{
struct basic_test_data *data = arg;
struct event_base *base = data->base;

struct evconnlistener *listener;
struct bufferevent *bev;
struct sockaddr_in sin;
struct sockaddr_storage ss;
enum regress_openssl_type type =
	(enum regress_openssl_type)data->setup_data;
int bev_flags = BEV_OPT_CLOSE_ON_FREE;
ev_socklen_t slen;
SSL *ssl;
struct wm_context client, server;
char *payload;
size_t payload_len = 1<<10;
size_t wm_high = 5<<10;

memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = htonl(0x7f000001);

memset(&ss, 0, sizeof(ss));
slen = sizeof(ss);

if (type & REGRESS_DEFERRED_CALLBACKS)
	bev_flags |= BEV_OPT_DEFER_CALLBACKS;

memset(&client, 0, sizeof(client));
memset(&server, 0, sizeof(server));
client.server = 0;
server.server = 1;
client.flags = server.flags = bev_flags;
client.data = evbuffer_new();
server.data = evbuffer_new();
payload = calloc(1, payload_len);
memset(payload, 'A', payload_len);
evbuffer_add(server.data, payload, payload_len);
evbuffer_add(client.data, payload, payload_len);
client.wm_high = server.wm_high = wm_high;
client.limit = server.limit = wm_high<<3;
client.to_read = server.to_read = payload_len>>1;

TT_BLATHER(("openssl_wm: "
	"payload_len = " EV_SIZE_FMT ", "
	"wm_high = " EV_SIZE_FMT ", "
	"limit = " EV_SIZE_FMT ", "
	"to_read: " EV_SIZE_FMT "",
	payload_len,
	wm_high,
	server.limit,
	server.to_read));

listener = evconnlistener_new_bind(base, wm_acceptcb, &server,
    LEV_OPT_CLOSE_ON_FREE|LEV_OPT_REUSEABLE,
    -1, (struct sockaddr *)&sin, sizeof(sin));

tt_assert(listener);
tt_assert(evconnlistener_get_fd(listener) >= 0);

ssl = SSL_new(get_ssl_ctx());
tt_assert(ssl);

if (type & REGRESS_OPENSSL_FILTER) {
	bev = bufferevent_socket_new(data->base, -1, client.flags);
	tt_assert(bev);
	bev = bufferevent_openssl_filter_new(
		base, bev, ssl, BUFFEREVENT_SSL_CONNECTING, client.flags);
} else {
	bev = bufferevent_openssl_socket_new(
		data->base, -1, ssl,
		BUFFEREVENT_SSL_CONNECTING,
		client.flags);
}
tt_assert(bev);
client.bev = bev;

server.neighbour = &client;
client.neighbour = &server;

bufferevent_setwatermark(bev, EV_READ, 0, client.wm_high);
bufferevent_setcb(bev, wm_transfer, NULL, wm_eventcb, &client);

tt_assert(getsockname(evconnlistener_get_fd(listener),
	(struct sockaddr*)&ss, &slen) == 0);

tt_assert(!bufferevent_socket_connect(bev, (struct sockaddr*)&ss, slen));
tt_assert(!evbuffer_add_buffer_reference(bufferevent_get_output(bev), client.data));
tt_assert(!bufferevent_enable(bev, EV_READ|EV_WRITE));

event_base_dispatch(base);

tt_int_op(client.get, ==, client.limit);
tt_int_op(server.get, ==, server.limit);

end:
free(payload);
evbuffer_free(client.data);
evbuffer_free(server.data);
evconnlistener_free(listener);
bufferevent_free(client.bev);
bufferevent_free(server.bev);

/* XXX: by some reason otherise there is a leak */
if (!(type & REGRESS_OPENSSL_FILTER))
	event_base_loop(base, EVLOOP_ONCE);
}

struct testcase_t ssl_testcases[] = {
#define T(a) ((void *)(a))
{ "bufferevent_socketpair", regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup, T(REGRESS_OPENSSL_SOCKETPAIR) },
{ "bufferevent_socketpair_write_after_connect", regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup,
  T(REGRESS_OPENSSL_SOCKETPAIR|REGRESS_OPENSSL_CLIENT_WRITE) },
{ "bufferevent_filter", regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup, T(REGRESS_OPENSSL_FILTER) },
{ "bufferevent_filter_write_after_connect", regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup,
  T(REGRESS_OPENSSL_FILTER|REGRESS_OPENSSL_CLIENT_WRITE) },
{ "bufferevent_renegotiate_socketpair", regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup,
  T(REGRESS_OPENSSL_SOCKETPAIR | REGRESS_OPENSSL_RENEGOTIATE) },
{ "bufferevent_renegotiate_filter", regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup,
  T(REGRESS_OPENSSL_FILTER | REGRESS_OPENSSL_RENEGOTIATE) },
{ "bufferevent_socketpair_startopen", regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup,
  T(REGRESS_OPENSSL_SOCKETPAIR | REGRESS_OPENSSL_OPEN) },
{ "bufferevent_filter_startopen", regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup,
  T(REGRESS_OPENSSL_FILTER | REGRESS_OPENSSL_OPEN) },

{ "bufferevent_socketpair_dirty_shutdown", regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup,
  T(REGRESS_OPENSSL_SOCKETPAIR | REGRESS_OPENSSL_DIRTY_SHUTDOWN) },
{ "bufferevent_filter_dirty_shutdown", regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup,
  T(REGRESS_OPENSSL_FILTER | REGRESS_OPENSSL_DIRTY_SHUTDOWN) },
{ "bufferevent_renegotiate_socketpair_dirty_shutdown",
  regress_bufferevent_openssl,
  TT_ISOLATED,
  &ssl_setup,
  T(REGRESS_OPENSSL_SOCKETPAIR | REGRESS_OPENSSL_RENEGOTIATE | REGRESS_OPENSSL_DIRTY_SHUTDOWN) },
{ "bufferevent_renegotiate_filter_dirty_shutdown",
  regress_bufferevent_openssl,
  TT_ISOLATED,
  &ssl_setup,
  T(REGRESS_OPENSSL_FILTER | REGRESS_OPENSSL_RENEGOTIATE | REGRESS_OPENSSL_DIRTY_SHUTDOWN) },
{ "bufferevent_socketpair_startopen_dirty_shutdown",
  regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup,
  T(REGRESS_OPENSSL_SOCKETPAIR | REGRESS_OPENSSL_OPEN | REGRESS_OPENSSL_DIRTY_SHUTDOWN) },
{ "bufferevent_filter_startopen_dirty_shutdown",
  regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup,
  T(REGRESS_OPENSSL_FILTER | REGRESS_OPENSSL_OPEN | REGRESS_OPENSSL_DIRTY_SHUTDOWN) },

{ "bufferevent_socketpair_fd", regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup,
  T(REGRESS_OPENSSL_SOCKETPAIR | REGRESS_OPENSSL_FD) },
{ "bufferevent_socketpair_freed", regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup,
  T(REGRESS_OPENSSL_SOCKETPAIR | REGRESS_OPENSSL_FREED) },
{ "bufferevent_socketpair_freed_fd", regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup,
  T(REGRESS_OPENSSL_SOCKETPAIR | REGRESS_OPENSSL_FREED | REGRESS_OPENSSL_FD) },
{ "bufferevent_filter_freed_fd", regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup,
  T(REGRESS_OPENSSL_FILTER | REGRESS_OPENSSL_FREED | REGRESS_OPENSSL_FD) },

{ "bufferevent_socketpair_timeout", regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup,
  T(REGRESS_OPENSSL_SOCKETPAIR | REGRESS_OPENSSL_TIMEOUT) },
{ "bufferevent_socketpair_timeout_freed_fd", regress_bufferevent_openssl,
  TT_ISOLATED, &ssl_setup,
  T(REGRESS_OPENSSL_SOCKETPAIR | REGRESS_OPENSSL_TIMEOUT | REGRESS_OPENSSL_FREED | REGRESS_OPENSSL_FD) },

{ "bufferevent_connect", regress_bufferevent_openssl_connect,
  TT_FORK|TT_NEED_BASE, &ssl_setup, NULL },
{ "bufferevent_connect_sleep", regress_bufferevent_openssl_connect,
  TT_FORK|TT_NEED_BASE, &ssl_setup, T(REGRESS_OPENSSL_SLEEP) },

{ "bufferevent_wm", regress_bufferevent_openssl_wm,
  TT_FORK|TT_NEED_BASE, &ssl_setup, NULL },
{ "bufferevent_wm_filter", regress_bufferevent_openssl_wm,
  TT_FORK|TT_NEED_BASE, &ssl_setup, T(REGRESS_OPENSSL_FILTER) },
{ "bufferevent_wm_defer", regress_bufferevent_openssl_wm,
  TT_FORK|TT_NEED_BASE, &ssl_setup, T(REGRESS_DEFERRED_CALLBACKS) },
{ "bufferevent_wm_filter_defer", regress_bufferevent_openssl_wm,
  TT_FORK|TT_NEED_BASE, &ssl_setup, T(REGRESS_OPENSSL_FILTER|REGRESS_DEFERRED_CALLBACKS) },

#undef T

END_OF_TESTCASES,
};