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s_server.c
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/*
* Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
* Copyright 2005 Nokia. All rights reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined(_WIN32)
/* Included before async.h to avoid some warnings */
# include <windows.h>
#endif
#include <openssl/e_os2.h>
#include <openssl/async.h>
#include <openssl/ssl.h>
#include <openssl/decoder.h>
#ifndef OPENSSL_NO_SOCK
/*
* With IPv6, it looks like Digital has mixed up the proper order of
* recursive header file inclusion, resulting in the compiler complaining
* that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which is
* needed to have fileno() declared correctly... So let's define u_int
*/
#if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
# define __U_INT
typedef unsigned int u_int;
#endif
#include <openssl/bn.h>
#include "apps.h"
#include "progs.h"
#include <openssl/err.h>
#include <openssl/pem.h>
#include <openssl/x509.h>
#include <openssl/rand.h>
#include <openssl/ocsp.h>
#ifndef OPENSSL_NO_DH
# include <openssl/dh.h>
#endif
#include <openssl/rsa.h>
#include "s_apps.h"
#include "timeouts.h"
#ifdef CHARSET_EBCDIC
#include <openssl/ebcdic.h>
#endif
#include "internal/sockets.h"
static int not_resumable_sess_cb(SSL *s, int is_forward_secure);
static int sv_body(int s, int stype, int prot, unsigned char *context);
static int www_body(int s, int stype, int prot, unsigned char *context);
static int rev_body(int s, int stype, int prot, unsigned char *context);
static void close_accept_socket(void);
static int init_ssl_connection(SSL *s);
static void print_stats(BIO *bp, SSL_CTX *ctx);
static int generate_session_id(SSL *ssl, unsigned char *id,
unsigned int *id_len);
static void init_session_cache_ctx(SSL_CTX *sctx);
static void free_sessions(void);
static void print_connection_info(SSL *con);
static const int bufsize = 16 * 1024;
static int accept_socket = -1;
#define TEST_CERT "server.pem"
#define TEST_CERT2 "server2.pem"
static int s_nbio = 0;
static int s_nbio_test = 0;
static int s_crlf = 0;
static SSL_CTX *ctx = NULL;
static SSL_CTX *ctx2 = NULL;
static int www = 0;
static BIO *bio_s_out = NULL;
static BIO *bio_s_msg = NULL;
static int s_debug = 0;
static int s_tlsextdebug = 0;
static int s_msg = 0;
static int s_quiet = 0;
static int s_ign_eof = 0;
static int s_brief = 0;
static char *keymatexportlabel = NULL;
static int keymatexportlen = 20;
static int async = 0;
static int use_sendfile = 0;
static int use_zc_sendfile = 0;
static const char *session_id_prefix = NULL;
static const unsigned char cert_type_rpk[] = { TLSEXT_cert_type_rpk, TLSEXT_cert_type_x509 };
static int enable_client_rpk = 0;
#ifndef OPENSSL_NO_DTLS
static int enable_timeouts = 0;
static long socket_mtu;
#endif
/*
* We define this but make it always be 0 in no-dtls builds to simplify the
* code.
*/
static int dtlslisten = 0;
static int stateless = 0;
static int early_data = 0;
static SSL_SESSION *psksess = NULL;
static char *psk_identity = "Client_identity";
char *psk_key = NULL; /* by default PSK is not used */
static char http_server_binmode = 0; /* for now: 0/1 = default/binary */
#ifndef OPENSSL_NO_PSK
static unsigned int psk_server_cb(SSL *ssl, const char *identity,
unsigned char *psk,
unsigned int max_psk_len)
{
long key_len = 0;
unsigned char *key;
if (s_debug)
BIO_printf(bio_s_out, "psk_server_cb\n");
if (!SSL_is_dtls(ssl) && SSL_version(ssl) >= TLS1_3_VERSION) {
/*
* This callback is designed for use in (D)TLSv1.2 (or below). It is
* possible to use a single callback for all protocol versions - but it
* is preferred to use a dedicated callback for TLSv1.3. For TLSv1.3 we
* have psk_find_session_cb.
*/
return 0;
}
if (identity == NULL) {
BIO_printf(bio_err, "Error: client did not send PSK identity\n");
goto out_err;
}
if (s_debug)
BIO_printf(bio_s_out, "identity_len=%d identity=%s\n",
(int)strlen(identity), identity);
/* here we could lookup the given identity e.g. from a database */
if (strcmp(identity, psk_identity) != 0) {
BIO_printf(bio_s_out, "PSK warning: client identity not what we expected"
" (got '%s' expected '%s')\n", identity, psk_identity);
} else {
if (s_debug)
BIO_printf(bio_s_out, "PSK client identity found\n");
}
/* convert the PSK key to binary */
key = OPENSSL_hexstr2buf(psk_key, &key_len);
if (key == NULL) {
BIO_printf(bio_err, "Could not convert PSK key '%s' to buffer\n",
psk_key);
return 0;
}
if (key_len > (int)max_psk_len) {
BIO_printf(bio_err,
"psk buffer of callback is too small (%d) for key (%ld)\n",
max_psk_len, key_len);
OPENSSL_free(key);
return 0;
}
memcpy(psk, key, key_len);
OPENSSL_free(key);
if (s_debug)
BIO_printf(bio_s_out, "fetched PSK len=%ld\n", key_len);
return key_len;
out_err:
if (s_debug)
BIO_printf(bio_err, "Error in PSK server callback\n");
(void)BIO_flush(bio_err);
(void)BIO_flush(bio_s_out);
return 0;
}
#endif
static int psk_find_session_cb(SSL *ssl, const unsigned char *identity,
size_t identity_len, SSL_SESSION **sess)
{
SSL_SESSION *tmpsess = NULL;
unsigned char *key;
long key_len;
const SSL_CIPHER *cipher = NULL;
if (strlen(psk_identity) != identity_len
|| memcmp(psk_identity, identity, identity_len) != 0) {
*sess = NULL;
return 1;
}
if (psksess != NULL) {
SSL_SESSION_up_ref(psksess);
*sess = psksess;
return 1;
}
key = OPENSSL_hexstr2buf(psk_key, &key_len);
if (key == NULL) {
BIO_printf(bio_err, "Could not convert PSK key '%s' to buffer\n",
psk_key);
return 0;
}
/* We default to SHA256 */
cipher = SSL_CIPHER_find(ssl, tls13_aes128gcmsha256_id);
if (cipher == NULL) {
BIO_printf(bio_err, "Error finding suitable ciphersuite\n");
OPENSSL_free(key);
return 0;
}
tmpsess = SSL_SESSION_new();
if (tmpsess == NULL
|| !SSL_SESSION_set1_master_key(tmpsess, key, key_len)
|| !SSL_SESSION_set_cipher(tmpsess, cipher)
|| !SSL_SESSION_set_protocol_version(tmpsess, SSL_version(ssl))) {
OPENSSL_free(key);
SSL_SESSION_free(tmpsess);
return 0;
}
OPENSSL_free(key);
*sess = tmpsess;
return 1;
}
#ifndef OPENSSL_NO_SRP
static srpsrvparm srp_callback_parm;
#endif
static int local_argc = 0;
static char **local_argv;
#ifdef CHARSET_EBCDIC
static int ebcdic_new(BIO *bi);
static int ebcdic_free(BIO *a);
static int ebcdic_read(BIO *b, char *out, int outl);
static int ebcdic_write(BIO *b, const char *in, int inl);
static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr);
static int ebcdic_gets(BIO *bp, char *buf, int size);
static int ebcdic_puts(BIO *bp, const char *str);
# define BIO_TYPE_EBCDIC_FILTER (18|0x0200)
static BIO_METHOD *methods_ebcdic = NULL;
/* This struct is "unwarranted chumminess with the compiler." */
typedef struct {
size_t alloced;
char buff[1];
} EBCDIC_OUTBUFF;
static const BIO_METHOD *BIO_f_ebcdic_filter()
{
if (methods_ebcdic == NULL) {
methods_ebcdic = BIO_meth_new(BIO_TYPE_EBCDIC_FILTER,
"EBCDIC/ASCII filter");
if (methods_ebcdic == NULL
|| !BIO_meth_set_write(methods_ebcdic, ebcdic_write)
|| !BIO_meth_set_read(methods_ebcdic, ebcdic_read)
|| !BIO_meth_set_puts(methods_ebcdic, ebcdic_puts)
|| !BIO_meth_set_gets(methods_ebcdic, ebcdic_gets)
|| !BIO_meth_set_ctrl(methods_ebcdic, ebcdic_ctrl)
|| !BIO_meth_set_create(methods_ebcdic, ebcdic_new)
|| !BIO_meth_set_destroy(methods_ebcdic, ebcdic_free))
return NULL;
}
return methods_ebcdic;
}
static int ebcdic_new(BIO *bi)
{
EBCDIC_OUTBUFF *wbuf;
wbuf = app_malloc(sizeof(*wbuf) + 1024, "ebcdic wbuf");
wbuf->alloced = 1024;
wbuf->buff[0] = '\0';
BIO_set_data(bi, wbuf);
BIO_set_init(bi, 1);
return 1;
}
static int ebcdic_free(BIO *a)
{
EBCDIC_OUTBUFF *wbuf;
if (a == NULL)
return 0;
wbuf = BIO_get_data(a);
OPENSSL_free(wbuf);
BIO_set_data(a, NULL);
BIO_set_init(a, 0);
return 1;
}
static int ebcdic_read(BIO *b, char *out, int outl)
{
int ret = 0;
BIO *next = BIO_next(b);
if (out == NULL || outl == 0)
return 0;
if (next == NULL)
return 0;
ret = BIO_read(next, out, outl);
if (ret > 0)
ascii2ebcdic(out, out, ret);
return ret;
}
static int ebcdic_write(BIO *b, const char *in, int inl)
{
EBCDIC_OUTBUFF *wbuf;
BIO *next = BIO_next(b);
int ret = 0;
int num;
if ((in == NULL) || (inl <= 0))
return 0;
if (next == NULL)
return 0;
wbuf = (EBCDIC_OUTBUFF *) BIO_get_data(b);
if (inl > (num = wbuf->alloced)) {
num = num + num; /* double the size */
if (num < inl)
num = inl;
OPENSSL_free(wbuf);
wbuf = app_malloc(sizeof(*wbuf) + num, "grow ebcdic wbuf");
wbuf->alloced = num;
wbuf->buff[0] = '\0';
BIO_set_data(b, wbuf);
}
ebcdic2ascii(wbuf->buff, in, inl);
ret = BIO_write(next, wbuf->buff, inl);
return ret;
}
static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr)
{
long ret;
BIO *next = BIO_next(b);
if (next == NULL)
return 0;
switch (cmd) {
case BIO_CTRL_DUP:
ret = 0L;
break;
default:
ret = BIO_ctrl(next, cmd, num, ptr);
break;
}
return ret;
}
static int ebcdic_gets(BIO *bp, char *buf, int size)
{
int i, ret = 0;
BIO *next = BIO_next(bp);
if (next == NULL)
return 0;
/* return(BIO_gets(bp->next_bio,buf,size));*/
for (i = 0; i < size - 1; ++i) {
ret = ebcdic_read(bp, &buf[i], 1);
if (ret <= 0)
break;
else if (buf[i] == '\n') {
++i;
break;
}
}
if (i < size)
buf[i] = '\0';
return (ret < 0 && i == 0) ? ret : i;
}
static int ebcdic_puts(BIO *bp, const char *str)
{
if (BIO_next(bp) == NULL)
return 0;
return ebcdic_write(bp, str, strlen(str));
}
#endif
/* This is a context that we pass to callbacks */
typedef struct tlsextctx_st {
char *servername;
BIO *biodebug;
int extension_error;
} tlsextctx;
static int ssl_servername_cb(SSL *s, int *ad, void *arg)
{
tlsextctx *p = (tlsextctx *) arg;
const char *servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
if (servername != NULL && p->biodebug != NULL) {
const char *cp = servername;
unsigned char uc;
BIO_printf(p->biodebug, "Hostname in TLS extension: \"");
while ((uc = *cp++) != 0)
BIO_printf(p->biodebug,
(((uc) & ~127) == 0) && isprint(uc) ? "%c" : "\\x%02x", uc);
BIO_printf(p->biodebug, "\"\n");
}
if (p->servername == NULL)
return SSL_TLSEXT_ERR_NOACK;
if (servername != NULL) {
if (OPENSSL_strcasecmp(servername, p->servername))
return p->extension_error;
if (ctx2 != NULL) {
BIO_printf(p->biodebug, "Switching server context.\n");
SSL_set_SSL_CTX(s, ctx2);
}
}
return SSL_TLSEXT_ERR_OK;
}
/* Structure passed to cert status callback */
typedef struct tlsextstatusctx_st {
int timeout;
/* File to load OCSP Response from (or NULL if no file) */
char *respin;
/* Default responder to use */
char *host, *path, *port;
char *proxy, *no_proxy;
int use_ssl;
int verbose;
} tlsextstatusctx;
static tlsextstatusctx tlscstatp = { -1 };
#ifndef OPENSSL_NO_OCSP
/*
* Helper function to get an OCSP_RESPONSE from a responder. This is a
* simplified version. It examines certificates each time and makes one OCSP
* responder query for each request. A full version would store details such as
* the OCSP certificate IDs and minimise the number of OCSP responses by caching
* them until they were considered "expired".
*/
static int get_ocsp_resp_from_responder(SSL *s, tlsextstatusctx *srctx,
OCSP_RESPONSE **resp)
{
char *host = NULL, *port = NULL, *path = NULL;
char *proxy = NULL, *no_proxy = NULL;
int use_ssl;
STACK_OF(OPENSSL_STRING) *aia = NULL;
X509 *x = NULL;
X509_STORE_CTX *inctx = NULL;
X509_OBJECT *obj;
OCSP_REQUEST *req = NULL;
OCSP_CERTID *id = NULL;
STACK_OF(X509_EXTENSION) *exts;
int ret = SSL_TLSEXT_ERR_NOACK;
int i;
/* Build up OCSP query from server certificate */
x = SSL_get_certificate(s);
aia = X509_get1_ocsp(x);
if (aia != NULL) {
if (!OSSL_HTTP_parse_url(sk_OPENSSL_STRING_value(aia, 0), &use_ssl,
NULL, &host, &port, NULL, &path, NULL, NULL)) {
BIO_puts(bio_err, "cert_status: can't parse AIA URL\n");
goto err;
}
if (srctx->verbose)
BIO_printf(bio_err, "cert_status: AIA URL: %s\n",
sk_OPENSSL_STRING_value(aia, 0));
} else {
if (srctx->host == NULL) {
BIO_puts(bio_err,
"cert_status: no AIA and no default responder URL\n");
goto done;
}
host = srctx->host;
path = srctx->path;
port = srctx->port;
use_ssl = srctx->use_ssl;
}
proxy = srctx->proxy;
no_proxy = srctx->no_proxy;
inctx = X509_STORE_CTX_new();
if (inctx == NULL)
goto err;
if (!X509_STORE_CTX_init(inctx,
SSL_CTX_get_cert_store(SSL_get_SSL_CTX(s)),
NULL, NULL))
goto err;
obj = X509_STORE_CTX_get_obj_by_subject(inctx, X509_LU_X509,
X509_get_issuer_name(x));
if (obj == NULL) {
BIO_puts(bio_err, "cert_status: Can't retrieve issuer certificate.\n");
goto done;
}
id = OCSP_cert_to_id(NULL, x, X509_OBJECT_get0_X509(obj));
X509_OBJECT_free(obj);
if (id == NULL)
goto err;
req = OCSP_REQUEST_new();
if (req == NULL)
goto err;
if (!OCSP_request_add0_id(req, id))
goto err;
id = NULL;
/* Add any extensions to the request */
SSL_get_tlsext_status_exts(s, &exts);
for (i = 0; i < sk_X509_EXTENSION_num(exts); i++) {
X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i);
if (!OCSP_REQUEST_add_ext(req, ext, -1))
goto err;
}
*resp = process_responder(req, host, port, path, proxy, no_proxy,
use_ssl, NULL /* headers */, srctx->timeout);
if (*resp == NULL) {
BIO_puts(bio_err, "cert_status: error querying responder\n");
goto done;
}
ret = SSL_TLSEXT_ERR_OK;
goto done;
err:
ret = SSL_TLSEXT_ERR_ALERT_FATAL;
done:
/*
* If we parsed aia we need to free; otherwise they were copied and we
* don't
*/
if (aia != NULL) {
OPENSSL_free(host);
OPENSSL_free(path);
OPENSSL_free(port);
X509_email_free(aia);
}
OCSP_CERTID_free(id);
OCSP_REQUEST_free(req);
X509_STORE_CTX_free(inctx);
return ret;
}
/*
* Certificate Status callback. This is called when a client includes a
* certificate status request extension. The response is either obtained from a
* file, or from an OCSP responder.
*/
static int cert_status_cb(SSL *s, void *arg)
{
tlsextstatusctx *srctx = arg;
OCSP_RESPONSE *resp = NULL;
unsigned char *rspder = NULL;
int rspderlen;
int ret = SSL_TLSEXT_ERR_ALERT_FATAL;
if (srctx->verbose)
BIO_puts(bio_err, "cert_status: callback called\n");
if (srctx->respin != NULL) {
BIO *derbio = bio_open_default(srctx->respin, 'r', FORMAT_ASN1);
if (derbio == NULL) {
BIO_puts(bio_err, "cert_status: Cannot open OCSP response file\n");
goto err;
}
resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
BIO_free(derbio);
if (resp == NULL) {
BIO_puts(bio_err, "cert_status: Error reading OCSP response\n");
goto err;
}
} else {
ret = get_ocsp_resp_from_responder(s, srctx, &resp);
if (ret != SSL_TLSEXT_ERR_OK)
goto err;
}
rspderlen = i2d_OCSP_RESPONSE(resp, &rspder);
if (rspderlen <= 0)
goto err;
SSL_set_tlsext_status_ocsp_resp(s, rspder, rspderlen);
if (srctx->verbose) {
BIO_puts(bio_err, "cert_status: ocsp response sent:\n");
OCSP_RESPONSE_print(bio_err, resp, 2);
}
ret = SSL_TLSEXT_ERR_OK;
err:
if (ret != SSL_TLSEXT_ERR_OK)
ERR_print_errors(bio_err);
OCSP_RESPONSE_free(resp);
return ret;
}
#endif
#ifndef OPENSSL_NO_NEXTPROTONEG
/* This is the context that we pass to next_proto_cb */
typedef struct tlsextnextprotoctx_st {
unsigned char *data;
size_t len;
} tlsextnextprotoctx;
static int next_proto_cb(SSL *s, const unsigned char **data,
unsigned int *len, void *arg)
{
tlsextnextprotoctx *next_proto = arg;
*data = next_proto->data;
*len = next_proto->len;
return SSL_TLSEXT_ERR_OK;
}
#endif /* ndef OPENSSL_NO_NEXTPROTONEG */
/* This the context that we pass to alpn_cb */
typedef struct tlsextalpnctx_st {
unsigned char *data;
size_t len;
} tlsextalpnctx;
static int alpn_cb(SSL *s, const unsigned char **out, unsigned char *outlen,
const unsigned char *in, unsigned int inlen, void *arg)
{
tlsextalpnctx *alpn_ctx = arg;
if (!s_quiet) {
/* We can assume that |in| is syntactically valid. */
unsigned int i;
BIO_printf(bio_s_out, "ALPN protocols advertised by the client: ");
for (i = 0; i < inlen;) {
if (i)
BIO_write(bio_s_out, ", ", 2);
BIO_write(bio_s_out, &in[i + 1], in[i]);
i += in[i] + 1;
}
BIO_write(bio_s_out, "\n", 1);
}
if (SSL_select_next_proto
((unsigned char **)out, outlen, alpn_ctx->data, alpn_ctx->len, in,
inlen) != OPENSSL_NPN_NEGOTIATED) {
return SSL_TLSEXT_ERR_ALERT_FATAL;
}
if (!s_quiet) {
BIO_printf(bio_s_out, "ALPN protocols selected: ");
BIO_write(bio_s_out, *out, *outlen);
BIO_write(bio_s_out, "\n", 1);
}
return SSL_TLSEXT_ERR_OK;
}
static int not_resumable_sess_cb(SSL *s, int is_forward_secure)
{
/* disable resumption for sessions with forward secure ciphers */
return is_forward_secure;
}
typedef enum OPTION_choice {
OPT_COMMON,
OPT_ENGINE,
OPT_4, OPT_6, OPT_ACCEPT, OPT_PORT, OPT_UNIX, OPT_UNLINK, OPT_NACCEPT,
OPT_VERIFY, OPT_NAMEOPT, OPT_UPPER_V_VERIFY, OPT_CONTEXT, OPT_CERT, OPT_CRL,
OPT_CRL_DOWNLOAD, OPT_SERVERINFO, OPT_CERTFORM, OPT_KEY, OPT_KEYFORM,
OPT_PASS, OPT_CERT_CHAIN, OPT_DHPARAM, OPT_DCERTFORM, OPT_DCERT,
OPT_DKEYFORM, OPT_DPASS, OPT_DKEY, OPT_DCERT_CHAIN, OPT_NOCERT,
OPT_CAPATH, OPT_NOCAPATH, OPT_CHAINCAPATH, OPT_VERIFYCAPATH, OPT_NO_CACHE,
OPT_EXT_CACHE, OPT_CRLFORM, OPT_VERIFY_RET_ERROR, OPT_VERIFY_QUIET,
OPT_BUILD_CHAIN, OPT_CAFILE, OPT_NOCAFILE, OPT_CHAINCAFILE,
OPT_VERIFYCAFILE,
OPT_CASTORE, OPT_NOCASTORE, OPT_CHAINCASTORE, OPT_VERIFYCASTORE,
OPT_NBIO, OPT_NBIO_TEST, OPT_IGN_EOF, OPT_NO_IGN_EOF,
OPT_DEBUG, OPT_TLSEXTDEBUG, OPT_STATUS, OPT_STATUS_VERBOSE,
OPT_STATUS_TIMEOUT, OPT_PROXY, OPT_NO_PROXY, 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_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, OPT_STATELESS,
OPT_ID_PREFIX, OPT_SERVERNAME, OPT_SERVERNAME_FATAL,
OPT_CERT2, OPT_KEY2, OPT_NEXTPROTONEG, OPT_ALPN, OPT_SENDFILE,
OPT_SRTP_PROFILES, OPT_KEYMATEXPORT, OPT_KEYMATEXPORTLEN,
OPT_KEYLOG_FILE, OPT_MAX_EARLY, OPT_RECV_MAX_EARLY, OPT_EARLY_DATA,
OPT_S_NUM_TICKETS, OPT_ANTI_REPLAY, OPT_NO_ANTI_REPLAY, OPT_SCTP_LABEL_BUG,
OPT_HTTP_SERVER_BINMODE, OPT_NOCANAMES, OPT_IGNORE_UNEXPECTED_EOF, OPT_KTLS,
OPT_USE_ZC_SENDFILE,
OPT_TFO, OPT_CERT_COMP,
OPT_ENABLE_SERVER_RPK,
OPT_ENABLE_CLIENT_RPK,
OPT_R_ENUM,
OPT_S_ENUM,
OPT_V_ENUM,
OPT_X_ENUM,
OPT_PROV_ENUM
} OPTION_CHOICE;
const OPTIONS s_server_options[] = {
OPT_SECTION("General"),
{"help", OPT_HELP, '-', "Display this summary"},
{"ssl_config", OPT_SSL_CONFIG, 's',
"Configure SSL_CTX using the given configuration value"},
#ifndef OPENSSL_NO_SSL_TRACE
{"trace", OPT_TRACE, '-', "trace protocol messages"},
#endif
#ifndef OPENSSL_NO_ENGINE
{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
#endif
OPT_SECTION("Network"),
{"port", OPT_PORT, 'p',
"TCP/IP port to listen on for connections (default is " PORT ")"},
{"accept", OPT_ACCEPT, 's',
"TCP/IP optional host and port to listen on for connections (default is *:" PORT ")"},
#ifdef AF_UNIX
{"unix", OPT_UNIX, 's', "Unix domain socket to accept on"},
{"unlink", OPT_UNLINK, '-', "For -unix, unlink existing socket first"},
#endif
{"4", OPT_4, '-', "Use IPv4 only"},
{"6", OPT_6, '-', "Use IPv6 only"},
#if defined(TCP_FASTOPEN) && !defined(OPENSSL_NO_TFO)
{"tfo", OPT_TFO, '-', "Listen for TCP Fast Open connections"},
#endif
OPT_SECTION("Identity"),
{"context", OPT_CONTEXT, 's', "Set session ID context"},
{"CAfile", OPT_CAFILE, '<', "PEM format file of CA's"},
{"CApath", OPT_CAPATH, '/', "PEM format directory of CA's"},
{"CAstore", OPT_CASTORE, ':', "URI to store of CA's"},
{"no-CAfile", OPT_NOCAFILE, '-',
"Do not load the default certificates file"},
{"no-CApath", OPT_NOCAPATH, '-',
"Do not load certificates from the default certificates directory"},
{"no-CAstore", OPT_NOCASTORE, '-',
"Do not load certificates from the default certificates store URI"},
{"nocert", OPT_NOCERT, '-', "Don't use any certificates (Anon-DH)"},
{"verify", OPT_VERIFY, 'n', "Turn on peer certificate verification"},
{"Verify", OPT_UPPER_V_VERIFY, 'n',
"Turn on peer certificate verification, must have a cert"},
{"nameopt", OPT_NAMEOPT, 's', "Certificate subject/issuer name printing options"},
{"cert", OPT_CERT, '<', "Server certificate file to use; default " TEST_CERT},
{"cert2", OPT_CERT2, '<',
"Certificate file to use for servername; default " TEST_CERT2},
{"certform", OPT_CERTFORM, 'F',
"Server certificate file format (PEM/DER/P12); has no effect"},
{"cert_chain", OPT_CERT_CHAIN, '<',
"Server certificate chain file in PEM format"},
{"build_chain", OPT_BUILD_CHAIN, '-', "Build server certificate chain"},
{"serverinfo", OPT_SERVERINFO, 's',
"PEM serverinfo file for certificate"},
{"key", OPT_KEY, 's',
"Private key file to use; default is -cert file or else" TEST_CERT},
{"key2", OPT_KEY2, '<',
"-Private Key file to use for servername if not in -cert2"},
{"keyform", OPT_KEYFORM, 'f', "Key format (ENGINE, other values ignored)"},
{"pass", OPT_PASS, 's', "Private key and cert file pass phrase source"},
{"dcert", OPT_DCERT, '<',
"Second server certificate file to use (usually for DSA)"},
{"dcertform", OPT_DCERTFORM, 'F',
"Second server certificate file format (PEM/DER/P12); has no effect"},
{"dcert_chain", OPT_DCERT_CHAIN, '<',
"second server certificate chain file in PEM format"},
{"dkey", OPT_DKEY, '<',
"Second private key file to use (usually for DSA)"},
{"dkeyform", OPT_DKEYFORM, 'F',
"Second key file format (ENGINE, other values ignored)"},
{"dpass", OPT_DPASS, 's',
"Second private key and cert file pass phrase source"},
{"dhparam", OPT_DHPARAM, '<', "DH parameters file to use"},
{"servername", OPT_SERVERNAME, 's',
"Servername for HostName TLS extension"},
{"servername_fatal", OPT_SERVERNAME_FATAL, '-',
"On servername mismatch send fatal alert (default warning alert)"},
{"nbio_test", OPT_NBIO_TEST, '-', "Test with the non-blocking test bio"},
{"crlf", OPT_CRLF, '-', "Convert LF from terminal into CRLF"},
{"quiet", OPT_QUIET, '-', "No server output"},
{"no_resume_ephemeral", OPT_NO_RESUME_EPHEMERAL, '-',
"Disable caching and tickets if ephemeral (EC)DH is used"},
{"www", OPT_WWW, '-', "Respond to a 'GET /' with a status page"},
{"WWW", OPT_UPPER_WWW, '-', "Respond to a 'GET with the file ./path"},
{"ignore_unexpected_eof", OPT_IGNORE_UNEXPECTED_EOF, '-',
"Do not treat lack of close_notify from a peer as an error"},
{"tlsextdebug", OPT_TLSEXTDEBUG, '-',
"Hex dump of all TLS extensions received"},
{"HTTP", OPT_HTTP, '-', "Like -WWW but ./path includes HTTP headers"},
{"id_prefix", OPT_ID_PREFIX, 's',
"Generate SSL/TLS session IDs prefixed by arg"},
{"keymatexport", OPT_KEYMATEXPORT, 's',
"Export keying material using label"},
{"keymatexportlen", OPT_KEYMATEXPORTLEN, 'p',
"Export len bytes of keying material; default 20"},
{"CRL", OPT_CRL, '<', "CRL file to use"},
{"CRLform", OPT_CRLFORM, 'F', "CRL file format (PEM or DER); default PEM"},
{"crl_download", OPT_CRL_DOWNLOAD, '-',
"Download CRLs from distribution points in certificate CDP entries"},
{"chainCAfile", OPT_CHAINCAFILE, '<',
"CA file for certificate chain (PEM format)"},
{"chainCApath", OPT_CHAINCAPATH, '/',
"use dir as certificate store path to build CA certificate chain"},
{"chainCAstore", OPT_CHAINCASTORE, ':',
"use URI as certificate store to build CA certificate chain"},
{"verifyCAfile", OPT_VERIFYCAFILE, '<',
"CA file for certificate verification (PEM format)"},
{"verifyCApath", OPT_VERIFYCAPATH, '/',
"use dir as certificate store path to verify CA certificate"},
{"verifyCAstore", OPT_VERIFYCASTORE, ':',
"use URI as certificate store to verify CA certificate"},
{"no_cache", OPT_NO_CACHE, '-', "Disable session cache"},
{"ext_cache", OPT_EXT_CACHE, '-',
"Disable internal cache, set up and use external cache"},
{"verify_return_error", OPT_VERIFY_RET_ERROR, '-',
"Close connection on verification error"},
{"verify_quiet", OPT_VERIFY_QUIET, '-',
"No verify output except verify errors"},
{"ign_eof", OPT_IGN_EOF, '-', "Ignore input EOF (default when -quiet)"},
{"no_ign_eof", OPT_NO_IGN_EOF, '-', "Do not ignore input EOF"},
#ifndef OPENSSL_NO_COMP_ALG
{"cert_comp", OPT_CERT_COMP, '-', "Pre-compress server certificates"},
#endif
#ifndef OPENSSL_NO_OCSP
OPT_SECTION("OCSP"),
{"status", OPT_STATUS, '-', "Request certificate status from server"},
{"status_verbose", OPT_STATUS_VERBOSE, '-',
"Print more output in certificate status callback"},
{"status_timeout", OPT_STATUS_TIMEOUT, 'n',
"Status request responder timeout"},
{"status_url", OPT_STATUS_URL, 's', "Status request fallback URL"},
{"proxy", OPT_PROXY, 's',
"[http[s]://]host[:port][/path] of HTTP(S) proxy to use; path is ignored"},
{"no_proxy", OPT_NO_PROXY, 's',
"List of addresses of servers not to use HTTP(S) proxy for"},
{OPT_MORE_STR, 0, 0,
"Default from environment variable 'no_proxy', else 'NO_PROXY', else none"},
{"status_file", OPT_STATUS_FILE, '<',
"File containing DER encoded OCSP Response"},
#endif
OPT_SECTION("Debug"),
{"security_debug", OPT_SECURITY_DEBUG, '-',
"Print output from SSL/TLS security framework"},
{"security_debug_verbose", OPT_SECURITY_DEBUG_VERBOSE, '-',
"Print more output from SSL/TLS security framework"},
{"brief", OPT_BRIEF, '-',
"Restrict output to brief summary of connection parameters"},
{"rev", OPT_REV, '-',
"act as an echo server that sends back received text reversed"},
{"debug", OPT_DEBUG, '-', "Print more output"},
{"msg", OPT_MSG, '-', "Show protocol messages"},
{"msgfile", OPT_MSGFILE, '>',
"File to send output of -msg or -trace, instead of stdout"},
{"state", OPT_STATE, '-', "Print the SSL states"},
{"async", OPT_ASYNC, '-', "Operate in asynchronous mode"},
{"max_pipelines", OPT_MAX_PIPELINES, 'p',
"Maximum number of encrypt/decrypt pipelines to be used"},
{"naccept", OPT_NACCEPT, 'p', "Terminate after #num connections"},
{"keylogfile", OPT_KEYLOG_FILE, '>', "Write TLS secrets to file"},
OPT_SECTION("Network"),
{"nbio", OPT_NBIO, '-', "Use non-blocking IO"},
{"timeout", OPT_TIMEOUT, '-', "Enable timeouts"},
{"mtu", OPT_MTU, 'p', "Set link-layer MTU"},
{"read_buf", OPT_READ_BUF, 'p',
"Default read buffer size to be used for connections"},
{"split_send_frag", OPT_SPLIT_SEND_FRAG, 'p',
"Size used to split data for encrypt pipelines"},
{"max_send_frag", OPT_MAX_SEND_FRAG, 'p', "Maximum Size of send frames "},
OPT_SECTION("Server identity"),
{"psk_identity", OPT_PSK_IDENTITY, 's', "PSK identity to expect"},
#ifndef OPENSSL_NO_PSK
{"psk_hint", OPT_PSK_HINT, 's', "PSK identity hint to use"},
#endif
{"psk", OPT_PSK, 's', "PSK in hex (without 0x)"},
{"psk_session", OPT_PSK_SESS, '<', "File to read PSK SSL session from"},
#ifndef OPENSSL_NO_SRP
{"srpvfile", OPT_SRPVFILE, '<', "(deprecated) The verifier file for SRP"},
{"srpuserseed", OPT_SRPUSERSEED, 's',
"(deprecated) A seed string for a default user salt"},
#endif
OPT_SECTION("Protocol and version"),
{"max_early_data", OPT_MAX_EARLY, 'n',
"The maximum number of bytes of early data as advertised in tickets"},
{"recv_max_early_data", OPT_RECV_MAX_EARLY, 'n',
"The maximum number of bytes of early data (hard limit)"},
{"early_data", OPT_EARLY_DATA, '-', "Attempt to read early data"},
{"num_tickets", OPT_S_NUM_TICKETS, 'n',
"The number of TLSv1.3 session tickets that a server will automatically issue" },
{"anti_replay", OPT_ANTI_REPLAY, '-', "Switch on anti-replay protection (default)"},
{"no_anti_replay", OPT_NO_ANTI_REPLAY, '-', "Switch off anti-replay protection"},
{"http_server_binmode", OPT_HTTP_SERVER_BINMODE, '-', "opening files in binary mode when acting as http server (-WWW and -HTTP)"},
{"no_ca_names", OPT_NOCANAMES, '-',
"Disable TLS Extension CA Names"},
{"stateless", OPT_STATELESS, '-', "Require TLSv1.3 cookies"},
#ifndef OPENSSL_NO_SSL3
{"ssl3", OPT_SSL3, '-', "Just talk SSLv3"},
#endif
#ifndef OPENSSL_NO_TLS1
{"tls1", OPT_TLS1, '-', "Just talk TLSv1"},
#endif
#ifndef OPENSSL_NO_TLS1_1
{"tls1_1", OPT_TLS1_1, '-', "Just talk TLSv1.1"},
#endif
#ifndef OPENSSL_NO_TLS1_2
{"tls1_2", OPT_TLS1_2, '-', "just talk TLSv1.2"},
#endif
#ifndef OPENSSL_NO_TLS1_3
{"tls1_3", OPT_TLS1_3, '-', "just talk TLSv1.3"},
#endif
#ifndef OPENSSL_NO_DTLS
{"dtls", OPT_DTLS, '-', "Use any DTLS version"},
{"listen", OPT_LISTEN, '-',
"Listen for a DTLS ClientHello with a cookie and then connect"},
#endif
#ifndef OPENSSL_NO_DTLS1
{"dtls1", OPT_DTLS1, '-', "Just talk DTLSv1"},
#endif
#ifndef OPENSSL_NO_DTLS1_2
{"dtls1_2", OPT_DTLS1_2, '-', "Just talk DTLSv1.2"},
#endif
#ifndef OPENSSL_NO_SCTP
{"sctp", OPT_SCTP, '-', "Use SCTP"},
{"sctp_label_bug", OPT_SCTP_LABEL_BUG, '-', "Enable SCTP label length bug"},
#endif
#ifndef OPENSSL_NO_SRTP
{"use_srtp", OPT_SRTP_PROFILES, 's',
"Offer SRTP key management with a colon-separated profile list"},
#endif
{"no_dhe", OPT_NO_DHE, '-', "Disable ephemeral DH"},
#ifndef OPENSSL_NO_NEXTPROTONEG
{"nextprotoneg", OPT_NEXTPROTONEG, 's',
"Set the advertised protocols for the NPN extension (comma-separated list)"},
#endif
{"alpn", OPT_ALPN, 's',
"Set the advertised protocols for the ALPN extension (comma-separated list)"},
#ifndef OPENSSL_NO_KTLS
{"ktls", OPT_KTLS, '-', "Enable Kernel TLS for sending and receiving"},
{"sendfile", OPT_SENDFILE, '-', "Use sendfile to response file with -WWW"},
{"zerocopy_sendfile", OPT_USE_ZC_SENDFILE, '-', "Use zerocopy mode of KTLS sendfile"},
#endif
{"enable_server_rpk", OPT_ENABLE_SERVER_RPK, '-', "Enable raw public keys (RFC7250) from the server"},
{"enable_client_rpk", OPT_ENABLE_CLIENT_RPK, '-', "Enable raw public keys (RFC7250) from the client"},
OPT_R_OPTIONS,
OPT_S_OPTIONS,
OPT_V_OPTIONS,
OPT_X_OPTIONS,
OPT_PROV_OPTIONS,
{NULL}
};
#define IS_PROT_FLAG(o) \
(o == OPT_SSL3 || o == OPT_TLS1 || o == OPT_TLS1_1 || o == OPT_TLS1_2 \
|| o == OPT_TLS1_3 || o == OPT_DTLS || o == OPT_DTLS1 || o == OPT_DTLS1_2)
int s_server_main(int argc, char *argv[])
{
ENGINE *engine = NULL;
EVP_PKEY *s_key = NULL, *s_dkey = NULL;
SSL_CONF_CTX *cctx = NULL;
const SSL_METHOD *meth = TLS_server_method();
SSL_EXCERT *exc = NULL;
STACK_OF(OPENSSL_STRING) *ssl_args = NULL;