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Add the ability to use a server side TLSv1.3 external PSK in s_server 

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3670)
This commit is contained in:
Matt Caswell 2017-06-12 18:26:09 +01:00
parent e261bdd185
commit df894947c4
1 changed files with 39 additions and 3 deletions
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42
apps/s_server.c
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@ -117,6 +117,7 @@ static long socket_mtu;
static int dtlslisten = 0;
static int early_data = 0;
static SSL_SESSION *psksess = NULL;
#ifndef OPENSSL_NO_PSK
static char *psk_identity = "Client_identity";
@ -178,6 +179,19 @@ static unsigned int psk_server_cb(SSL *ssl, const char *identity,
}
#endif
static int psk_find_session_cb(SSL *ssl, const unsigned char *identity,
size_t identity_len, SSL_SESSION **sess)
{
if (strlen(psk_identity) != identity_len
|| memcmp(psk_identity, identity, identity_len) != 0)
return 0;
SSL_SESSION_up_ref(psksess);
*sess = psksess;
return 1;
}
#ifndef OPENSSL_NO_SRP
/* This is a context that we pass to callbacks */
typedef struct srpsrvparm_st {
@ -685,9 +699,9 @@ typedef enum OPTION_choice {
OPT_STATUS_TIMEOUT, OPT_STATUS_URL, OPT_STATUS_FILE, OPT_MSG, OPT_MSGFILE,
OPT_TRACE, OPT_SECURITY_DEBUG, OPT_SECURITY_DEBUG_VERBOSE, OPT_STATE,
OPT_CRLF, OPT_QUIET, OPT_BRIEF, OPT_NO_DHE,
OPT_NO_RESUME_EPHEMERAL, OPT_PSK_IDENTITY, OPT_PSK_HINT, OPT_PSK, OPT_SRPVFILE,
OPT_SRPUSERSEED, OPT_REV, OPT_WWW, OPT_UPPER_WWW, OPT_HTTP, OPT_ASYNC,
OPT_SSL_CONFIG,
OPT_NO_RESUME_EPHEMERAL, OPT_PSK_IDENTITY, OPT_PSK_HINT, OPT_PSK,
OPT_PSK_SESS, OPT_SRPVFILE, OPT_SRPUSERSEED, OPT_REV, OPT_WWW,
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,
@ -843,6 +857,7 @@ const OPTIONS s_server_options[] = {
{"psk_hint", OPT_PSK_HINT, 's', "PSK identity hint to use"},
{"psk", OPT_PSK, 's', "PSK in hex (without 0x)"},
#endif
{"psk_session", OPT_PSK_SESS, '<', "File to read PSK SSL session from"},
#ifndef OPENSSL_NO_SRP
{"srpvfile", OPT_SRPVFILE, '<', "The verifier file for SRP"},
{"srpuserseed", OPT_SRPUSERSEED, 's',
@ -977,6 +992,7 @@ int s_server_main(int argc, char *argv[])
const char *s_serverinfo_file = NULL;
const char *keylog_file = NULL;
int max_early_data = -1;
char *psksessf = NULL;
/* Init of few remaining global variables */
local_argc = argc;
@ -1342,6 +1358,9 @@ int s_server_main(int argc, char *argv[])
}
#endif
break;
case OPT_PSK_SESS:
psksessf = opt_arg();
break;
case OPT_SRPVFILE:
#ifndef OPENSSL_NO_SRP
srp_verifier_file = opt_arg();
@ -1940,6 +1959,23 @@ int s_server_main(int argc, char *argv[])
goto end;
}
#endif
if (psksessf != NULL) {
BIO *stmp = BIO_new_file(psksessf, "r");
if (stmp == NULL) {
BIO_printf(bio_err, "Can't open PSK session file %s\n", psksessf);
ERR_print_errors(bio_err);
goto end;
}
psksess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
BIO_free(stmp);
if (psksess == NULL) {
BIO_printf(bio_err, "Can't read PSK session file %s\n", psksessf);
ERR_print_errors(bio_err);
goto end;
}
SSL_CTX_set_psk_find_session_callback(ctx, psk_find_session_cb);
}
SSL_CTX_set_verify(ctx, s_server_verify, verify_callback);
if (!SSL_CTX_set_session_id_context(ctx,