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Add the ability for s_server to operate statelessly

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Reviewed-by: Ben Kaduk <kaduk@mit.edu>
(Merged from https://github.com/openssl/openssl/pull/4435)
This commit is contained in:
Matt Caswell 2017-12-29 17:37:04 +00:00
parent e93597193d
commit c2f9648d5d
1 changed files with 68 additions and 52 deletions
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120
apps/s_server.c
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@ -114,6 +114,7 @@ static long socket_mtu;
* code.
*/
static int dtlslisten = 0;
static int stateless = 0;
static int early_data = 0;
static SSL_SESSION *psksess = NULL;
@ -751,7 +752,7 @@ typedef enum OPTION_choice {
OPT_UPPER_WWW, OPT_HTTP, OPT_ASYNC, OPT_SSL_CONFIG,
OPT_MAX_SEND_FRAG, OPT_SPLIT_SEND_FRAG, OPT_MAX_PIPELINES, OPT_READ_BUF,
OPT_SSL3, OPT_TLS1_3, OPT_TLS1_2, OPT_TLS1_1, OPT_TLS1, OPT_DTLS, OPT_DTLS1,
OPT_DTLS1_2, OPT_SCTP, OPT_TIMEOUT, OPT_MTU, OPT_LISTEN,
OPT_DTLS1_2, OPT_SCTP, OPT_TIMEOUT, OPT_MTU, OPT_LISTEN, OPT_STATELESS,
OPT_ID_PREFIX, OPT_SERVERNAME, OPT_SERVERNAME_FATAL,
OPT_CERT2, OPT_KEY2, OPT_NEXTPROTONEG, OPT_ALPN,
OPT_SRTP_PROFILES, OPT_KEYMATEXPORT, OPT_KEYMATEXPORTLEN,
@ -933,6 +934,7 @@ const OPTIONS s_server_options[] = {
{"listen", OPT_LISTEN, '-',
"Listen for a DTLS ClientHello with a cookie and then connect"},
#endif
{"stateless", OPT_STATELESS, '-', "Require TLSv1.3 cookies"},
#ifndef OPENSSL_NO_DTLS1
{"dtls1", OPT_DTLS1, '-', "Just talk DTLSv1"},
#endif
@ -1496,6 +1498,9 @@ int s_server_main(int argc, char *argv[])
dtlslisten = 1;
#endif
break;
case OPT_STATELESS:
stateless = 1;
break;
case OPT_ID_PREFIX:
session_id_prefix = opt_arg();
break;
@ -1588,6 +1593,11 @@ int s_server_main(int argc, char *argv[])
}
#endif
if (stateless && socket_type != SOCK_STREAM) {
BIO_printf(bio_err, "Can only use --stateless with TLS\n");
goto end;
}
#ifdef AF_UNIX
if (socket_family == AF_UNIX && socket_type != SOCK_STREAM) {
BIO_printf(bio_err,
@ -2691,81 +2701,87 @@ static int init_ssl_connection(SSL *con)
long verify_err;
int retry = 0;
#ifndef OPENSSL_NO_DTLS
if (dtlslisten) {
if (dtlslisten || stateless) {
BIO_ADDR *client = NULL;
if ((client = BIO_ADDR_new()) == NULL) {
BIO_printf(bio_err, "ERROR - memory\n");
return 0;
if (dtlslisten) {
if ((client = BIO_ADDR_new()) == NULL) {
BIO_printf(bio_err, "ERROR - memory\n");
return 0;
}
i = DTLSv1_listen(con, client);
} else {
i = SSL_stateless(con);
}
i = DTLSv1_listen(con, client);
if (i > 0) {
BIO *wbio;
int fd = -1;
wbio = SSL_get_wbio(con);
if (wbio) {
BIO_get_fd(wbio, &fd);
}
if (dtlslisten) {
wbio = SSL_get_wbio(con);
if (wbio) {
BIO_get_fd(wbio, &fd);
}
if (!wbio || BIO_connect(fd, client, 0) == 0) {
BIO_printf(bio_err, "ERROR - unable to connect\n");
if (!wbio || BIO_connect(fd, client, 0) == 0) {
BIO_printf(bio_err, "ERROR - unable to connect\n");
BIO_ADDR_free(client);
return 0;
}
BIO_ADDR_free(client);
return 0;
dtlslisten = 0;
} else {
stateless = 0;
}
BIO_ADDR_free(client);
dtlslisten = 0;
i = SSL_accept(con);
} else {
BIO_ADDR_free(client);
}
} else
} else {
do {
i = SSL_accept(con);
if (i <= 0)
retry = is_retryable(con, i);
#ifdef CERT_CB_TEST_RETRY
{
while (i <= 0
&& SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP
&& SSL_get_state(con) == TLS_ST_SR_CLNT_HELLO) {
BIO_printf(bio_err,
"LOOKUP from certificate callback during accept\n");
i = SSL_accept(con);
if (i <= 0)
retry = is_retryable(con, i);
}
}
#endif
do {
i = SSL_accept(con);
if (i <= 0)
retry = is_retryable(con, i);
#ifdef CERT_CB_TEST_RETRY
{
#ifndef OPENSSL_NO_SRP
while (i <= 0
&& SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP
&& SSL_get_state(con) == TLS_ST_SR_CLNT_HELLO) {
BIO_printf(bio_err,
"LOOKUP from certificate callback during accept\n");
&& SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP) {
BIO_printf(bio_s_out, "LOOKUP during accept %s\n",
srp_callback_parm.login);
SRP_user_pwd_free(srp_callback_parm.user);
srp_callback_parm.user =
SRP_VBASE_get1_by_user(srp_callback_parm.vb,
srp_callback_parm.login);
if (srp_callback_parm.user)
BIO_printf(bio_s_out, "LOOKUP done %s\n",
srp_callback_parm.user->info);
else
BIO_printf(bio_s_out, "LOOKUP not successful\n");
i = SSL_accept(con);
if (i <= 0)
retry = is_retryable(con, i);
}
}
#endif
#ifndef OPENSSL_NO_SRP
while (i <= 0
&& SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP) {
BIO_printf(bio_s_out, "LOOKUP during accept %s\n",
srp_callback_parm.login);
SRP_user_pwd_free(srp_callback_parm.user);
srp_callback_parm.user =
SRP_VBASE_get1_by_user(srp_callback_parm.vb,
srp_callback_parm.login);
if (srp_callback_parm.user)
BIO_printf(bio_s_out, "LOOKUP done %s\n",
srp_callback_parm.user->info);
else
BIO_printf(bio_s_out, "LOOKUP not successful\n");
i = SSL_accept(con);
if (i <= 0)
retry = is_retryable(con, i);
}
#endif
} while (i < 0 && SSL_waiting_for_async(con));
} while (i < 0 && SSL_waiting_for_async(con));
}
if (i <= 0) {
if ((dtlslisten && i == 0)
|| (!dtlslisten && retry)) {
if (((dtlslisten || stateless) && i == 0)
|| (!dtlslisten && !stateless && retry)) {
BIO_printf(bio_s_out, "DELAY\n");
return 1;
}