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Add a "-early_data" option to s_server

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Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2737)
This commit is contained in:
Matt Caswell 2017-02-22 15:24:11 +00:00
parent fe5e20fd26
commit e0655186f9
1 changed files with 44 additions and 1 deletions
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45
apps/s_server.c
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@ -147,6 +147,8 @@ static int dtlslisten = 0;
static char *psk_identity = "Client_identity";
char *psk_key = NULL; /* by default PSK is not used */
int early_data = 0;
static unsigned int psk_server_cb(SSL *ssl, const char *identity,
unsigned char *psk,
unsigned int max_psk_len)
@ -719,7 +721,7 @@ typedef enum OPTION_choice {
OPT_ID_PREFIX, OPT_RAND, OPT_SERVERNAME, OPT_SERVERNAME_FATAL,
OPT_CERT2, OPT_KEY2, OPT_NEXTPROTONEG, OPT_ALPN,
OPT_SRTP_PROFILES, OPT_KEYMATEXPORT, OPT_KEYMATEXPORTLEN,
OPT_KEYLOG_FILE, OPT_MAX_EARLY,
OPT_KEYLOG_FILE, OPT_MAX_EARLY, OPT_EARLY_DATA,
OPT_S_ENUM,
OPT_V_ENUM,
OPT_X_ENUM
@ -918,6 +920,7 @@ const OPTIONS s_server_options[] = {
{"keylogfile", OPT_KEYLOG_FILE, '>', "Write TLS secrets to file"},
{"max_early_data", OPT_MAX_EARLY, 'p',
"The maximum number of bytes of early data"},
{"early_data", OPT_EARLY_DATA, '-', "Attempt to read early data"},
{NULL, OPT_EOF, 0, NULL}
};
@ -1506,6 +1509,9 @@ int s_server_main(int argc, char *argv[])
case OPT_MAX_EARLY:
max_early_data = atoi(opt_arg());
break;
case OPT_EARLY_DATA:
early_data = 1;
break;
}
}
argc = opt_num_rest();
@ -2199,6 +2205,43 @@ static int sv_body(int s, int stype, unsigned char *context)
SSL_set_tlsext_debug_arg(con, bio_s_out);
}
if (early_data) {
int write_header = 1, edret = SSL_READ_EARLY_ERROR;
size_t readbytes;
while (edret != SSL_READ_EARLY_FINISH) {
for (;;) {
edret = SSL_read_early(con, buf, bufsize, &readbytes);
if (edret != SSL_READ_EARLY_ERROR)
break;
switch (SSL_get_error(con, 0)) {
case SSL_ERROR_WANT_WRITE:
case SSL_ERROR_WANT_ASYNC:
case SSL_ERROR_WANT_READ:
/* Just keep trying - busy waiting */
continue;
default:
BIO_printf(bio_err, "Error reading early data\n");
ERR_print_errors(bio_err);
goto err;
}
}
if (readbytes > 0) {
if (write_header) {
BIO_printf(bio_s_out, "Early data received:\n");
write_header = 0;
}
raw_write_stdout(buf, (unsigned int)readbytes);
(void)BIO_flush(bio_s_out);
}
}
if (write_header)
BIO_printf(bio_s_out, "No early data received\n");
else
BIO_printf(bio_s_out, "\nEnd of early data\n");
}
if (fileno_stdin() > s)
width = fileno_stdin() + 1;
else