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openssl/apps/s_server.c
Dmitry Belyavskiy 09b90e0ed7 Introducing option SSL_OP_IGNORE_UNEXPECTED_EOF 
Partially fixes #11209.

Before OpenSSL 3.0 in case when peer does not send close_notify,
the behaviour was to set SSL_ERROR_SYSCALL error with errno 0.
This behaviour has changed. The SSL_OP_IGNORE_UNEXPECTED_EOF restores
the old behaviour for compatibility's sake.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11735)
2020-05-19 19:04:11 +03:00

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/*
* Copyright 1995-2020 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>
#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/ssl.h>
#include <openssl/rand.h>
#include <openssl/ocsp.h>
#ifndef OPENSSL_NO_DH
# include <openssl/dh.h>
#endif
#ifndef OPENSSL_NO_RSA
# include <openssl/rsa.h>
#endif
#ifndef OPENSSL_NO_SRP
# include <openssl/srp.h>
#endif
#include "s_apps.h"
#include "timeouts.h"
#ifdef CHARSET_EBCDIC
#include <openssl/ebcdic.h>
#endif
#include "internal/sockets.h"
DEFINE_STACK_OF(X509_EXTENSION)
DEFINE_STACK_OF(X509_CRL)
DEFINE_STACK_OF(X509)
DEFINE_STACK_OF(SSL_CIPHER)
DEFINE_STACK_OF_STRING()
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);
#ifndef OPENSSL_NO_DH
static DH *load_dh_param(const char *dhfile);
#endif
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 const char *session_id_prefix = NULL;
#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 (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);
return 0;
}
OPENSSL_free(key);
*sess = tmpsess;
return 1;
}
#ifndef OPENSSL_NO_SRP
/* This is a context that we pass to callbacks */
typedef struct srpsrvparm_st {
char *login;
SRP_VBASE *vb;
SRP_user_pwd *user;
} srpsrvparm;
static srpsrvparm srp_callback_parm;
/*
* This callback pretends to require some asynchronous logic in order to
* obtain a verifier. When the callback is called for a new connection we
* return with a negative value. This will provoke the accept etc to return
* with an LOOKUP_X509. The main logic of the reinvokes the suspended call
* (which would normally occur after a worker has finished) and we set the
* user parameters.
*/
static int ssl_srp_server_param_cb(SSL *s, int *ad, void *arg)
{
srpsrvparm *p = (srpsrvparm *) arg;
int ret = SSL3_AL_FATAL;
if (p->login == NULL && p->user == NULL) {
p->login = SSL_get_srp_username(s);
BIO_printf(bio_err, "SRP username = \"%s\"\n", p->login);
return -1;
}
if (p->user == NULL) {
BIO_printf(bio_err, "User %s doesn't exist\n", p->login);
goto err;
}
if (SSL_set_srp_server_param
(s, p->user->N, p->user->g, p->user->s, p->user->v,
p->user->info) < 0) {
*ad = SSL_AD_INTERNAL_ERROR;
goto err;
}
BIO_printf(bio_err,
"SRP parameters set: username = \"%s\" info=\"%s\" \n",
p->login, p->user->info);
ret = SSL_ERROR_NONE;
err:
SRP_user_pwd_free(p->user);
p->user = NULL;
p->login = NULL;
return ret;
}
#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 (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;
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;
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),
&host, &port, &path, &use_ssl)) {
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;
}
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, path, port, use_ssl, NULL,
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_ERR = -1, OPT_EOF = 0, OPT_HELP, 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_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_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 configuration 'val'"},
#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"},
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 is " TEST_CERT},
{"cert2", OPT_CERT2, '<',
"Certificate file to use for servername; default is" 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 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 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, '-',
"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, setup 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_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"},
{"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 a simple test server which just sends back with the 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, '<', "The verifier file for SRP"},
{"srpuserseed", OPT_SRPUSERSEED, 's',
"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
#ifndef OPENSSL_NO_DH
{"no_dhe", OPT_NO_DHE, '-', "Disable ephemeral DH"},
#endif
#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
{"sendfile", OPT_SENDFILE, '-', "Use sendfile to response file with -WWW"},
#endif
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;
STACK_OF(X509) *s_chain = NULL, *s_dchain = NULL;
STACK_OF(X509_CRL) *crls = NULL;
X509 *s_cert = NULL, *s_dcert = NULL;
X509_VERIFY_PARAM *vpm = NULL;
const char *CApath = NULL, *CAfile = NULL, *CAstore = NULL;
const char *chCApath = NULL, *chCAfile = NULL, *chCAstore = NULL;
char *dpassarg = NULL, *dpass = NULL;
char *passarg = NULL, *pass = NULL;
char *vfyCApath = NULL, *vfyCAfile = NULL, *vfyCAstore = NULL;
char *crl_file = NULL, *prog;
#ifdef AF_UNIX
int unlink_unix_path = 0;
#endif
do_server_cb server_cb;
int vpmtouched = 0, build_chain = 0, no_cache = 0, ext_cache = 0;
#ifndef OPENSSL_NO_DH
char *dhfile = NULL;
int no_dhe = 0;
#endif
int nocert = 0, ret = 1;
int noCApath = 0, noCAfile = 0, noCAstore = 0;
int s_cert_format = FORMAT_PEM, s_key_format = FORMAT_PEM;
int s_dcert_format = FORMAT_PEM, s_dkey_format = FORMAT_PEM;
int rev = 0, naccept = -1, sdebug = 0;
int socket_family = AF_UNSPEC, socket_type = SOCK_STREAM, protocol = 0;
int state = 0, crl_format = FORMAT_PEM, crl_download = 0;
char *host = NULL;
char *port = OPENSSL_strdup(PORT);
unsigned char *context = NULL;
OPTION_CHOICE o;
EVP_PKEY *s_key2 = NULL;
X509 *s_cert2 = NULL;
tlsextctx tlsextcbp = { NULL, NULL, SSL_TLSEXT_ERR_ALERT_WARNING };
const char *ssl_config = NULL;
int read_buf_len = 0;
#ifndef OPENSSL_NO_NEXTPROTONEG
const char *next_proto_neg_in = NULL;
tlsextnextprotoctx next_proto = { NULL, 0 };
#endif
const char *alpn_in = NULL;
tlsextalpnctx alpn_ctx = { NULL, 0 };
#ifndef OPENSSL_NO_PSK
/* by default do not send a PSK identity hint */
char *psk_identity_hint = NULL;
#endif
char *p;
#ifndef OPENSSL_NO_SRP
char *srpuserseed = NULL;
char *srp_verifier_file = NULL;
#endif
#ifndef OPENSSL_NO_SRTP
char *srtp_profiles = NULL;
#endif
int min_version = 0, max_version = 0, prot_opt = 0, no_prot_opt = 0;
int s_server_verify = SSL_VERIFY_NONE;
int s_server_session_id_context = 1; /* anything will do */
const char *s_cert_file = TEST_CERT, *s_key_file = NULL, *s_chain_file = NULL;
const char *s_cert_file2 = TEST_CERT2, *s_key_file2 = NULL;
char *s_dcert_file = NULL, *s_dkey_file = NULL, *s_dchain_file = NULL;
#ifndef OPENSSL_NO_OCSP
int s_tlsextstatus = 0;
#endif
int no_resume_ephemeral = 0;
unsigned int max_send_fragment = 0;
unsigned int split_send_fragment = 0, max_pipelines = 0;
const char *s_serverinfo_file = NULL;
const char *keylog_file = NULL;
int max_early_data = -1, recv_max_early_data = -1;
char *psksessf = NULL;
int no_ca_names = 0;
#ifndef OPENSSL_NO_SCTP
int sctp_label_bug = 0;
#endif
int ignore_unexpected_eof = 0;
/* Init of few remaining global variables */
local_argc = argc;
local_argv = argv;
ctx = ctx2 = NULL;
s_nbio = s_nbio_test = 0;
www = 0;
bio_s_out = NULL;
s_debug = 0;
s_msg = 0;
s_quiet = 0;
s_brief = 0;
async = 0;
use_sendfile = 0;
cctx = SSL_CONF_CTX_new();
vpm = X509_VERIFY_PARAM_new();
if (cctx == NULL || vpm == NULL)
goto end;
SSL_CONF_CTX_set_flags(cctx,
SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CMDLINE);
prog = opt_init(argc, argv, s_server_options);
while ((o = opt_next()) != OPT_EOF) {
if (IS_PROT_FLAG(o) && ++prot_opt > 1) {
BIO_printf(bio_err, "Cannot supply multiple protocol flags\n");
goto end;
}
if (IS_NO_PROT_FLAG(o))
no_prot_opt++;
if (prot_opt == 1 && no_prot_opt) {
BIO_printf(bio_err,
"Cannot supply both a protocol flag and '-no_<prot>'\n");
goto end;
}
switch (o) {
case OPT_EOF:
case OPT_ERR:
opthelp:
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
goto end;
case OPT_HELP:
opt_help(s_server_options);
ret = 0;
goto end;
case OPT_4:
#ifdef AF_UNIX
if (socket_family == AF_UNIX) {
OPENSSL_free(host); host = NULL;
OPENSSL_free(port); port = NULL;
}
#endif
socket_family = AF_INET;
break;
case OPT_6:
if (1) {
#ifdef AF_INET6
#ifdef AF_UNIX
if (socket_family == AF_UNIX) {
OPENSSL_free(host); host = NULL;
OPENSSL_free(port); port = NULL;
}
#endif
socket_family = AF_INET6;
} else {
#endif
BIO_printf(bio_err, "%s: IPv6 domain sockets unsupported\n", prog);
goto end;
}
break;
case OPT_PORT:
#ifdef AF_UNIX
if (socket_family == AF_UNIX) {
socket_family = AF_UNSPEC;
}
#endif
OPENSSL_free(port); port = NULL;
OPENSSL_free(host); host = NULL;
if (BIO_parse_hostserv(opt_arg(), NULL, &port, BIO_PARSE_PRIO_SERV) < 1) {
BIO_printf(bio_err,
"%s: -port argument malformed or ambiguous\n",
port);
goto end;
}
break;
case OPT_ACCEPT:
#ifdef AF_UNIX
if (socket_family == AF_UNIX) {
socket_family = AF_UNSPEC;
}
#endif
OPENSSL_free(port); port = NULL;
OPENSSL_free(host); host = NULL;
if (BIO_parse_hostserv(opt_arg(), &host, &port, BIO_PARSE_PRIO_SERV) < 1) {
BIO_printf(bio_err,
"%s: -accept argument malformed or ambiguous\n",
port);
goto end;
}
break;
#ifdef AF_UNIX
case OPT_UNIX:
socket_family = AF_UNIX;
OPENSSL_free(host); host = OPENSSL_strdup(opt_arg());
OPENSSL_free(port); port = NULL;
break;
case OPT_UNLINK:
unlink_unix_path = 1;
break;
#endif
case OPT_NACCEPT:
naccept = atol(opt_arg());
break;
case OPT_VERIFY:
s_server_verify = SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE;
verify_args.depth = atoi(opt_arg());
if (!s_quiet)
BIO_printf(bio_err, "verify depth is %d\n", verify_args.depth);
break;
case OPT_UPPER_V_VERIFY:
s_server_verify =
SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT |
SSL_VERIFY_CLIENT_ONCE;
verify_args.depth = atoi(opt_arg());
if (!s_quiet)
BIO_printf(bio_err,
"verify depth is %d, must return a certificate\n",
verify_args.depth);
break;
case OPT_CONTEXT:
context = (unsigned char *)opt_arg();
break;
case OPT_CERT:
s_cert_file = opt_arg();
break;
case OPT_NAMEOPT:
if (!set_nameopt(opt_arg()))
goto end;
break;
case OPT_CRL:
crl_file = opt_arg();
break;
case OPT_CRL_DOWNLOAD:
crl_download = 1;
break;
case OPT_SERVERINFO:
s_serverinfo_file = opt_arg();
break;
case OPT_CERTFORM:
if (!opt_format(opt_arg(), OPT_FMT_ANY, &s_cert_format))
goto opthelp;
break;
case OPT_KEY:
s_key_file = opt_arg();
break;
case OPT_KEYFORM:
if (!opt_format(opt_arg(), OPT_FMT_ANY, &s_key_format))
goto opthelp;
break;
case OPT_PASS:
passarg = opt_arg();
break;
case OPT_CERT_CHAIN:
s_chain_file = opt_arg();
break;
case OPT_DHPARAM:
#ifndef OPENSSL_NO_DH
dhfile = opt_arg();
#endif
break;
case OPT_DCERTFORM:
if (!opt_format(opt_arg(), OPT_FMT_ANY, &s_dcert_format))
goto opthelp;
break;
case OPT_DCERT:
s_dcert_file = opt_arg();
break;
case OPT_DKEYFORM:
if (!opt_format(opt_arg(), OPT_FMT_ANY, &s_dkey_format))
goto opthelp;
break;
case OPT_DPASS:
dpassarg = opt_arg();
break;
case OPT_DKEY:
s_dkey_file = opt_arg();
break;
case OPT_DCERT_CHAIN:
s_dchain_file = opt_arg();
break;
case OPT_NOCERT:
nocert = 1;
break;
case OPT_CAPATH:
CApath = opt_arg();
break;
case OPT_NOCAPATH:
noCApath = 1;
break;
case OPT_CHAINCAPATH:
chCApath = opt_arg();
break;
case OPT_VERIFYCAPATH:
vfyCApath = opt_arg();
break;
case OPT_CASTORE:
CAstore = opt_arg();
break;
case OPT_NOCASTORE:
noCAstore = 1;
break;
case OPT_CHAINCASTORE:
chCAstore = opt_arg();
break;
case OPT_VERIFYCASTORE:
vfyCAstore = opt_arg();
break;
case OPT_NO_CACHE:
no_cache = 1;
break;
case OPT_EXT_CACHE:
ext_cache = 1;
break;
case OPT_CRLFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &crl_format))
goto opthelp;
break;
case OPT_S_CASES:
case OPT_S_NUM_TICKETS:
case OPT_ANTI_REPLAY:
case OPT_NO_ANTI_REPLAY:
if (ssl_args == NULL)
ssl_args = sk_OPENSSL_STRING_new_null();
if (ssl_args == NULL
|| !sk_OPENSSL_STRING_push(ssl_args, opt_flag())
|| !sk_OPENSSL_STRING_push(ssl_args, opt_arg())) {
BIO_printf(bio_err, "%s: Memory allocation failure\n", prog);
goto end;
}
break;
case OPT_V_CASES:
if (!opt_verify(o, vpm))
goto end;
vpmtouched++;
break;
case OPT_X_CASES:
if (!args_excert(o, &exc))
goto end;
break;
case OPT_VERIFY_RET_ERROR:
verify_args.return_error = 1;
break;
case OPT_VERIFY_QUIET:
verify_args.quiet = 1;
break;
case OPT_BUILD_CHAIN:
build_chain = 1;
break;
case OPT_CAFILE:
CAfile = opt_arg();
break;
case OPT_NOCAFILE:
noCAfile = 1;
break;
case OPT_CHAINCAFILE:
chCAfile = opt_arg();
break;
case OPT_VERIFYCAFILE:
vfyCAfile = opt_arg();
break;
case OPT_NBIO:
s_nbio = 1;
break;
case OPT_NBIO_TEST:
s_nbio = s_nbio_test = 1;
break;
case OPT_IGN_EOF:
s_ign_eof = 1;
break;
case OPT_NO_IGN_EOF:
s_ign_eof = 0;
break;
case OPT_DEBUG:
s_debug = 1;
break;
case OPT_TLSEXTDEBUG:
s_tlsextdebug = 1;
break;
case OPT_STATUS:
#ifndef OPENSSL_NO_OCSP
s_tlsextstatus = 1;
#endif
break;
case OPT_STATUS_VERBOSE:
#ifndef OPENSSL_NO_OCSP
s_tlsextstatus = tlscstatp.verbose = 1;
#endif
break;
case OPT_STATUS_TIMEOUT:
#ifndef OPENSSL_NO_OCSP
s_tlsextstatus = 1;
tlscstatp.timeout = atoi(opt_arg());
#endif
break;
case OPT_STATUS_URL:
#ifndef OPENSSL_NO_OCSP
s_tlsextstatus = 1;
if (!OSSL_HTTP_parse_url(opt_arg(),
&tlscstatp.host, &tlscstatp.port,
&tlscstatp.path, &tlscstatp.use_ssl)) {
BIO_printf(bio_err, "Error parsing URL\n");
goto end;
}
#endif
break;
case OPT_STATUS_FILE:
#ifndef OPENSSL_NO_OCSP
s_tlsextstatus = 1;
tlscstatp.respin = opt_arg();
#endif
break;
case OPT_MSG:
s_msg = 1;
break;
case OPT_MSGFILE:
bio_s_msg = BIO_new_file(opt_arg(), "w");
break;
case OPT_TRACE:
#ifndef OPENSSL_NO_SSL_TRACE
s_msg = 2;
#endif
break;
case OPT_SECURITY_DEBUG:
sdebug = 1;
break;
case OPT_SECURITY_DEBUG_VERBOSE:
sdebug = 2;
break;
case OPT_STATE:
state = 1;
break;
case OPT_CRLF:
s_crlf = 1;
break;
case OPT_QUIET:
s_quiet = 1;
break;
case OPT_BRIEF:
s_quiet = s_brief = verify_args.quiet = 1;
break;
case OPT_NO_DHE:
#ifndef OPENSSL_NO_DH
no_dhe = 1;
#endif
break;
case OPT_NO_RESUME_EPHEMERAL:
no_resume_ephemeral = 1;
break;
case OPT_PSK_IDENTITY:
psk_identity = opt_arg();
break;
case OPT_PSK_HINT:
#ifndef OPENSSL_NO_PSK
psk_identity_hint = opt_arg();
#endif
break;
case OPT_PSK:
for (p = psk_key = opt_arg(); *p; p++) {
if (isxdigit(_UC(*p)))
continue;
BIO_printf(bio_err, "Not a hex number '%s'\n", psk_key);
goto end;
}
break;
case OPT_PSK_SESS:
psksessf = opt_arg();
break;
case OPT_SRPVFILE:
#ifndef OPENSSL_NO_SRP
srp_verifier_file = opt_arg();
if (min_version < TLS1_VERSION)
min_version = TLS1_VERSION;
#endif
break;
case OPT_SRPUSERSEED:
#ifndef OPENSSL_NO_SRP
srpuserseed = opt_arg();
if (min_version < TLS1_VERSION)
min_version = TLS1_VERSION;
#endif
break;
case OPT_REV:
rev = 1;
break;
case OPT_WWW:
www = 1;
break;
case OPT_UPPER_WWW:
www = 2;
break;
case OPT_HTTP:
www = 3;
break;
case OPT_SSL_CONFIG:
ssl_config = opt_arg();
break;
case OPT_SSL3:
min_version = SSL3_VERSION;
max_version = SSL3_VERSION;
break;
case OPT_TLS1_3:
min_version = TLS1_3_VERSION;
max_version = TLS1_3_VERSION;
break;
case OPT_TLS1_2:
min_version = TLS1_2_VERSION;
max_version = TLS1_2_VERSION;
break;
case OPT_TLS1_1:
min_version = TLS1_1_VERSION;
max_version = TLS1_1_VERSION;
break;
case OPT_TLS1:
min_version = TLS1_VERSION;
max_version = TLS1_VERSION;
break;
case OPT_DTLS:
#ifndef OPENSSL_NO_DTLS
meth = DTLS_server_method();
socket_type = SOCK_DGRAM;
#endif
break;
case OPT_DTLS1:
#ifndef OPENSSL_NO_DTLS
meth = DTLS_server_method();
min_version = DTLS1_VERSION;
max_version = DTLS1_VERSION;
socket_type = SOCK_DGRAM;
#endif
break;
case OPT_DTLS1_2:
#ifndef OPENSSL_NO_DTLS
meth = DTLS_server_method();
min_version = DTLS1_2_VERSION;
max_version = DTLS1_2_VERSION;
socket_type = SOCK_DGRAM;
#endif
break;
case OPT_SCTP:
#ifndef OPENSSL_NO_SCTP
protocol = IPPROTO_SCTP;
#endif
break;
case OPT_SCTP_LABEL_BUG:
#ifndef OPENSSL_NO_SCTP
sctp_label_bug = 1;
#endif
break;
case OPT_TIMEOUT:
#ifndef OPENSSL_NO_DTLS
enable_timeouts = 1;
#endif
break;
case OPT_MTU:
#ifndef OPENSSL_NO_DTLS
socket_mtu = atol(opt_arg());
#endif
break;
case OPT_LISTEN:
#ifndef OPENSSL_NO_DTLS
dtlslisten = 1;
#endif
break;
case OPT_STATELESS:
stateless = 1;
break;
case OPT_ID_PREFIX:
session_id_prefix = opt_arg();
break;
case OPT_ENGINE:
#ifndef OPENSSL_NO_ENGINE
engine = setup_engine(opt_arg(), s_debug);
#endif
break;
case OPT_R_CASES:
if (!opt_rand(o))
goto end;
break;
case OPT_PROV_CASES:
if (!opt_provider(o))
goto end;
break;
case OPT_SERVERNAME:
tlsextcbp.servername = opt_arg();
break;
case OPT_SERVERNAME_FATAL:
tlsextcbp.extension_error = SSL_TLSEXT_ERR_ALERT_FATAL;
break;
case OPT_CERT2:
s_cert_file2 = opt_arg();
break;
case OPT_KEY2:
s_key_file2 = opt_arg();
break;
case OPT_NEXTPROTONEG:
# ifndef OPENSSL_NO_NEXTPROTONEG
next_proto_neg_in = opt_arg();
#endif
break;
case OPT_ALPN:
alpn_in = opt_arg();
break;
case OPT_SRTP_PROFILES:
#ifndef OPENSSL_NO_SRTP
srtp_profiles = opt_arg();
#endif
break;
case OPT_KEYMATEXPORT:
keymatexportlabel = opt_arg();
break;
case OPT_KEYMATEXPORTLEN:
keymatexportlen = atoi(opt_arg());
break;
case OPT_ASYNC:
async = 1;
break;
case OPT_MAX_SEND_FRAG:
max_send_fragment = atoi(opt_arg());
break;
case OPT_SPLIT_SEND_FRAG:
split_send_fragment = atoi(opt_arg());
break;
case OPT_MAX_PIPELINES:
max_pipelines = atoi(opt_arg());
break;
case OPT_READ_BUF:
read_buf_len = atoi(opt_arg());
break;
case OPT_KEYLOG_FILE:
keylog_file = opt_arg();
break;
case OPT_MAX_EARLY:
max_early_data = atoi(opt_arg());
if (max_early_data < 0) {
BIO_printf(bio_err, "Invalid value for max_early_data\n");
goto end;
}
break;
case OPT_RECV_MAX_EARLY:
recv_max_early_data = atoi(opt_arg());
if (recv_max_early_data < 0) {
BIO_printf(bio_err, "Invalid value for recv_max_early_data\n");
goto end;
}
break;
case OPT_EARLY_DATA:
early_data = 1;
if (max_early_data == -1)
max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
break;
case OPT_HTTP_SERVER_BINMODE:
http_server_binmode = 1;
break;
case OPT_NOCANAMES:
no_ca_names = 1;
break;
case OPT_SENDFILE:
#ifndef OPENSSL_NO_KTLS
use_sendfile = 1;
#endif
break;
case OPT_IGNORE_UNEXPECTED_EOF:
ignore_unexpected_eof = 1;
break;
}
}
argc = opt_num_rest();
argv = opt_rest();
#ifndef OPENSSL_NO_NEXTPROTONEG
if (min_version == TLS1_3_VERSION && next_proto_neg_in != NULL) {
BIO_printf(bio_err, "Cannot supply -nextprotoneg with TLSv1.3\n");
goto opthelp;
}
#endif
#ifndef OPENSSL_NO_DTLS
if (www && socket_type == SOCK_DGRAM) {
BIO_printf(bio_err, "Can't use -HTTP, -www or -WWW with DTLS\n");
goto end;
}
if (dtlslisten && socket_type != SOCK_DGRAM) {
BIO_printf(bio_err, "Can only use -listen with DTLS\n");
goto end;
}
#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,
"Can't use unix sockets and datagrams together\n");
goto end;
}
#endif
if (early_data && (www > 0 || rev)) {
BIO_printf(bio_err,
"Can't use -early_data in combination with -www, -WWW, -HTTP, or -rev\n");
goto end;
}
#ifndef OPENSSL_NO_SCTP
if (protocol == IPPROTO_SCTP) {
if (socket_type != SOCK_DGRAM) {
BIO_printf(bio_err, "Can't use -sctp without DTLS\n");
goto end;
}
/* SCTP is unusual. It uses DTLS over a SOCK_STREAM protocol */
socket_type = SOCK_STREAM;
}
#endif
#ifndef OPENSSL_NO_KTLS
if (use_sendfile && www <= 1) {
BIO_printf(bio_err, "Can't use -sendfile without -WWW or -HTTP\n");
goto end;
}
#endif
if (!app_passwd(passarg, dpassarg, &pass, &dpass)) {
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
if (s_key_file == NULL)
s_key_file = s_cert_file;
if (s_key_file2 == NULL)
s_key_file2 = s_cert_file2;
if (!load_excert(&exc))
goto end;
if (nocert == 0) {
s_key = load_key(s_key_file, s_key_format, 0, pass, engine,
"server certificate private key file");
if (s_key == NULL)
goto end;
s_cert = load_cert(s_cert_file, s_cert_format,
"server certificate file");
if (s_cert == NULL)
goto end;
if (s_chain_file != NULL) {
if (!load_certs(s_chain_file, &s_chain, FORMAT_PEM, NULL,
"server certificate chain"))
goto end;
}
if (tlsextcbp.servername != NULL) {
s_key2 = load_key(s_key_file2, s_key_format, 0, pass, engine,
"second server certificate private key file");
if (s_key2 == NULL)
goto end;
s_cert2 = load_cert(s_cert_file2, s_cert_format,
"second server certificate file");
if (s_cert2 == NULL)
goto end;
}
}
#if !defined(OPENSSL_NO_NEXTPROTONEG)
if (next_proto_neg_in) {
next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in);
if (next_proto.data == NULL)
goto end;
}
#endif
alpn_ctx.data = NULL;
if (alpn_in) {
alpn_ctx.data = next_protos_parse(&alpn_ctx.len, alpn_in);
if (alpn_ctx.data == NULL)
goto end;
}
if (crl_file != NULL) {
X509_CRL *crl;
crl = load_crl(crl_file, crl_format, "CRL");
if (crl == NULL)
goto end;
crls = sk_X509_CRL_new_null();
if (crls == NULL || !sk_X509_CRL_push(crls, crl)) {
BIO_puts(bio_err, "Error adding CRL\n");
ERR_print_errors(bio_err);
X509_CRL_free(crl);
goto end;
}
}
if (s_dcert_file != NULL) {
if (s_dkey_file == NULL)
s_dkey_file = s_dcert_file;
s_dkey = load_key(s_dkey_file, s_dkey_format,
0, dpass, engine, "second certificate private key file");
if (s_dkey == NULL)
goto end;
s_dcert = load_cert(s_dcert_file, s_dcert_format,
"second server certificate file");
if (s_dcert == NULL) {
ERR_print_errors(bio_err);
goto end;
}
if (s_dchain_file != NULL) {
if (!load_certs(s_dchain_file, &s_dchain, FORMAT_PEM, NULL,
"second server certificate chain"))
goto end;
}
}
if (bio_s_out == NULL) {
if (s_quiet && !s_debug) {
bio_s_out = BIO_new(BIO_s_null());
if (s_msg && bio_s_msg == NULL)
bio_s_msg = dup_bio_out(FORMAT_TEXT);
} else {
if (bio_s_out == NULL)
bio_s_out = dup_bio_out(FORMAT_TEXT);
}
}
#if !defined(OPENSSL_NO_RSA) || !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_EC)
if (nocert)
#endif
{
s_cert_file = NULL;
s_key_file = NULL;
s_dcert_file = NULL;
s_dkey_file = NULL;
s_cert_file2 = NULL;
s_key_file2 = NULL;
}
ctx = SSL_CTX_new(meth);
if (ctx == NULL) {
ERR_print_errors(bio_err);
goto end;
}
SSL_CTX_clear_mode(ctx, SSL_MODE_AUTO_RETRY);
if (sdebug)
ssl_ctx_security_debug(ctx, sdebug);
if (!config_ctx(cctx, ssl_args, ctx))
goto end;
if (ssl_config) {
if (SSL_CTX_config(ctx, ssl_config) == 0) {
BIO_printf(bio_err, "Error using configuration \"%s\"\n",
ssl_config);
ERR_print_errors(bio_err);
goto end;
}
}
#ifndef OPENSSL_NO_SCTP
if (protocol == IPPROTO_SCTP && sctp_label_bug == 1)
SSL_CTX_set_mode(ctx, SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG);
#endif
if (min_version != 0
&& SSL_CTX_set_min_proto_version(ctx, min_version) == 0)
goto end;
if (max_version != 0
&& SSL_CTX_set_max_proto_version(ctx, max_version) == 0)
goto end;
if (session_id_prefix) {
if (strlen(session_id_prefix) >= 32)
BIO_printf(bio_err,
"warning: id_prefix is too long, only one new session will be possible\n");
if (!SSL_CTX_set_generate_session_id(ctx, generate_session_id)) {
BIO_printf(bio_err, "error setting 'id_prefix'\n");
ERR_print_errors(bio_err);
goto end;
}
BIO_printf(bio_err, "id_prefix '%s' set.\n", session_id_prefix);
}
if (exc != NULL)
ssl_ctx_set_excert(ctx, exc);
if (state)
SSL_CTX_set_info_callback(ctx, apps_ssl_info_callback);
if (no_cache)
SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF);
else if (ext_cache)
init_session_cache_ctx(ctx);
else
SSL_CTX_sess_set_cache_size(ctx, 128);
if (async) {
SSL_CTX_set_mode(ctx, SSL_MODE_ASYNC);
}
if (no_ca_names) {
SSL_CTX_set_options(ctx, SSL_OP_DISABLE_TLSEXT_CA_NAMES);
}
if (ignore_unexpected_eof)
SSL_CTX_set_options(ctx, SSL_OP_IGNORE_UNEXPECTED_EOF);
if (max_send_fragment > 0
&& !SSL_CTX_set_max_send_fragment(ctx, max_send_fragment)) {
BIO_printf(bio_err, "%s: Max send fragment size %u is out of permitted range\n",
prog, max_send_fragment);
goto end;
}
if (split_send_fragment > 0
&& !SSL_CTX_set_split_send_fragment(ctx, split_send_fragment)) {
BIO_printf(bio_err, "%s: Split send fragment size %u is out of permitted range\n",
prog, split_send_fragment);
goto end;
}
if (max_pipelines > 0
&& !SSL_CTX_set_max_pipelines(ctx, max_pipelines)) {
BIO_printf(bio_err, "%s: Max pipelines %u is out of permitted range\n",
prog, max_pipelines);
goto end;
}
if (read_buf_len > 0) {
SSL_CTX_set_default_read_buffer_len(ctx, read_buf_len);
}
#ifndef OPENSSL_NO_SRTP
if (srtp_profiles != NULL) {
/* Returns 0 on success! */
if (SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles) != 0) {
BIO_printf(bio_err, "Error setting SRTP profile\n");
ERR_print_errors(bio_err);
goto end;
}
}
#endif
if (!ctx_set_verify_locations(ctx, CAfile, noCAfile, CApath, noCApath,
CAstore, noCAstore)) {
ERR_print_errors(bio_err);
goto end;
}
if (vpmtouched && !SSL_CTX_set1_param(ctx, vpm)) {
BIO_printf(bio_err, "Error setting verify params\n");
ERR_print_errors(bio_err);
goto end;
}
ssl_ctx_add_crls(ctx, crls, 0);
if (!ssl_load_stores(ctx,
vfyCApath, vfyCAfile, vfyCAstore,
chCApath, chCAfile, chCAstore,
crls, crl_download)) {
BIO_printf(bio_err, "Error loading store locations\n");
ERR_print_errors(bio_err);
goto end;
}
if (s_cert2) {
ctx2 = SSL_CTX_new(meth);
if (ctx2 == NULL) {
ERR_print_errors(bio_err);
goto end;
}
}
if (ctx2 != NULL) {
BIO_printf(bio_s_out, "Setting secondary ctx parameters\n");
if (sdebug)
ssl_ctx_security_debug(ctx2, sdebug);
if (session_id_prefix) {
if (strlen(session_id_prefix) >= 32)
BIO_printf(bio_err,
"warning: id_prefix is too long, only one new session will be possible\n");
if (!SSL_CTX_set_generate_session_id(ctx2, generate_session_id)) {
BIO_printf(bio_err, "error setting 'id_prefix'\n");
ERR_print_errors(bio_err);
goto end;
}
BIO_printf(bio_err, "id_prefix '%s' set.\n", session_id_prefix);
}
if (exc != NULL)
ssl_ctx_set_excert(ctx2, exc);
if (state)
SSL_CTX_set_info_callback(ctx2, apps_ssl_info_callback);
if (no_cache)
SSL_CTX_set_session_cache_mode(ctx2, SSL_SESS_CACHE_OFF);
else if (ext_cache)
init_session_cache_ctx(ctx2);
else
SSL_CTX_sess_set_cache_size(ctx2, 128);
if (async)
SSL_CTX_set_mode(ctx2, SSL_MODE_ASYNC);
if (!ctx_set_verify_locations(ctx2, CAfile, noCAfile, CApath,
noCApath, CAstore, noCAstore)) {
ERR_print_errors(bio_err);
goto end;
}
if (vpmtouched && !SSL_CTX_set1_param(ctx2, vpm)) {
BIO_printf(bio_err, "Error setting verify params\n");
ERR_print_errors(bio_err);
goto end;
}
ssl_ctx_add_crls(ctx2, crls, 0);
if (!config_ctx(cctx, ssl_args, ctx2))
goto end;
}
#ifndef OPENSSL_NO_NEXTPROTONEG
if (next_proto.data)
SSL_CTX_set_next_protos_advertised_cb(ctx, next_proto_cb,
&next_proto);
#endif
if (alpn_ctx.data)
SSL_CTX_set_alpn_select_cb(ctx, alpn_cb, &alpn_ctx);
#ifndef OPENSSL_NO_DH
if (!no_dhe) {
DH *dh = NULL;
if (dhfile != NULL)
dh = load_dh_param(dhfile);
else if (s_cert_file != NULL)
dh = load_dh_param(s_cert_file);
if (dh != NULL) {
BIO_printf(bio_s_out, "Setting temp DH parameters\n");
} else {
BIO_printf(bio_s_out, "Using default temp DH parameters\n");
}
(void)BIO_flush(bio_s_out);
if (dh == NULL) {
SSL_CTX_set_dh_auto(ctx, 1);
} else if (!SSL_CTX_set_tmp_dh(ctx, dh)) {
BIO_puts(bio_err, "Error setting temp DH parameters\n");
ERR_print_errors(bio_err);
DH_free(dh);
goto end;
}
if (ctx2 != NULL) {
if (!dhfile) {
DH *dh2 = load_dh_param(s_cert_file2);
if (dh2 != NULL) {
BIO_printf(bio_s_out, "Setting temp DH parameters\n");
(void)BIO_flush(bio_s_out);
DH_free(dh);
dh = dh2;
}
}
if (dh == NULL) {
SSL_CTX_set_dh_auto(ctx2, 1);
} else if (!SSL_CTX_set_tmp_dh(ctx2, dh)) {
BIO_puts(bio_err, "Error setting temp DH parameters\n");
ERR_print_errors(bio_err);
DH_free(dh);
goto end;
}
}
DH_free(dh);
}
#endif
if (!set_cert_key_stuff(ctx, s_cert, s_key, s_chain, build_chain))
goto end;
if (s_serverinfo_file != NULL
&& !SSL_CTX_use_serverinfo_file(ctx, s_serverinfo_file)) {
ERR_print_errors(bio_err);
goto end;
}
if (ctx2 != NULL
&& !set_cert_key_stuff(ctx2, s_cert2, s_key2, NULL, build_chain))
goto end;
if (s_dcert != NULL) {
if (!set_cert_key_stuff(ctx, s_dcert, s_dkey, s_dchain, build_chain))
goto end;
}
if (no_resume_ephemeral) {
SSL_CTX_set_not_resumable_session_callback(ctx,
not_resumable_sess_cb);
if (ctx2 != NULL)
SSL_CTX_set_not_resumable_session_callback(ctx2,
not_resumable_sess_cb);
}
#ifndef OPENSSL_NO_PSK
if (psk_key != NULL) {
if (s_debug)
BIO_printf(bio_s_out, "PSK key given, setting server callback\n");
SSL_CTX_set_psk_server_callback(ctx, psk_server_cb);
}
if (psk_identity_hint != NULL) {
if (min_version == TLS1_3_VERSION) {
BIO_printf(bio_s_out, "PSK warning: there is NO identity hint in TLSv1.3\n");
} else {
if (!SSL_CTX_use_psk_identity_hint(ctx, psk_identity_hint)) {
BIO_printf(bio_err, "error setting PSK identity hint to context\n");
ERR_print_errors(bio_err);
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;
}
}
if (psk_key != NULL || psksess != NULL)
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,
(void *)&s_server_session_id_context,
sizeof(s_server_session_id_context))) {
BIO_printf(bio_err, "error setting session id context\n");
ERR_print_errors(bio_err);
goto end;
}
/* Set DTLS cookie generation and verification callbacks */
SSL_CTX_set_cookie_generate_cb(ctx, generate_cookie_callback);
SSL_CTX_set_cookie_verify_cb(ctx, verify_cookie_callback);
/* Set TLS1.3 cookie generation and verification callbacks */
SSL_CTX_set_stateless_cookie_generate_cb(ctx, generate_stateless_cookie_callback);
SSL_CTX_set_stateless_cookie_verify_cb(ctx, verify_stateless_cookie_callback);
if (ctx2 != NULL) {
SSL_CTX_set_verify(ctx2, s_server_verify, verify_callback);
if (!SSL_CTX_set_session_id_context(ctx2,
(void *)&s_server_session_id_context,
sizeof(s_server_session_id_context))) {
BIO_printf(bio_err, "error setting session id context\n");
ERR_print_errors(bio_err);
goto end;
}
tlsextcbp.biodebug = bio_s_out;
SSL_CTX_set_tlsext_servername_callback(ctx2, ssl_servername_cb);
SSL_CTX_set_tlsext_servername_arg(ctx2, &tlsextcbp);
SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
}
#ifndef OPENSSL_NO_SRP
if (srp_verifier_file != NULL) {
srp_callback_parm.vb = SRP_VBASE_new(srpuserseed);
srp_callback_parm.user = NULL;
srp_callback_parm.login = NULL;
if ((ret =
SRP_VBASE_init(srp_callback_parm.vb,
srp_verifier_file)) != SRP_NO_ERROR) {
BIO_printf(bio_err,
"Cannot initialize SRP verifier file \"%s\":ret=%d\n",
srp_verifier_file, ret);
goto end;
}
SSL_CTX_set_verify(ctx, SSL_VERIFY_NONE, verify_callback);
SSL_CTX_set_srp_cb_arg(ctx, &srp_callback_parm);
SSL_CTX_set_srp_username_callback(ctx, ssl_srp_server_param_cb);
} else
#endif
if (CAfile != NULL) {
SSL_CTX_set_client_CA_list(ctx, SSL_load_client_CA_file(CAfile));
if (ctx2)
SSL_CTX_set_client_CA_list(ctx2, SSL_load_client_CA_file(CAfile));
}
#ifndef OPENSSL_NO_OCSP
if (s_tlsextstatus) {
SSL_CTX_set_tlsext_status_cb(ctx, cert_status_cb);
SSL_CTX_set_tlsext_status_arg(ctx, &tlscstatp);
if (ctx2) {
SSL_CTX_set_tlsext_status_cb(ctx2, cert_status_cb);
SSL_CTX_set_tlsext_status_arg(ctx2, &tlscstatp);
}
}
#endif
if (set_keylog_file(ctx, keylog_file))
goto end;
if (max_early_data >= 0)
SSL_CTX_set_max_early_data(ctx, max_early_data);
if (recv_max_early_data >= 0)
SSL_CTX_set_recv_max_early_data(ctx, recv_max_early_data);
if (rev)
server_cb = rev_body;
else if (www)
server_cb = www_body;
else
server_cb = sv_body;
#ifdef AF_UNIX
if (socket_family == AF_UNIX
&& unlink_unix_path)
unlink(host);
#endif
do_server(&accept_socket, host, port, socket_family, socket_type, protocol,
server_cb, context, naccept, bio_s_out);
print_stats(bio_s_out, ctx);
ret = 0;
end:
SSL_CTX_free(ctx);
SSL_SESSION_free(psksess);
set_keylog_file(NULL, NULL);
X509_free(s_cert);
sk_X509_CRL_pop_free(crls, X509_CRL_free);
X509_free(s_dcert);
EVP_PKEY_free(s_key);
EVP_PKEY_free(s_dkey);
sk_X509_pop_free(s_chain, X509_free);
sk_X509_pop_free(s_dchain, X509_free);
OPENSSL_free(pass);
OPENSSL_free(dpass);
OPENSSL_free(host);
OPENSSL_free(port);
X509_VERIFY_PARAM_free(vpm);
free_sessions();
OPENSSL_free(tlscstatp.host);
OPENSSL_free(tlscstatp.port);
OPENSSL_free(tlscstatp.path);
SSL_CTX_free(ctx2);
X509_free(s_cert2);
EVP_PKEY_free(s_key2);
#ifndef OPENSSL_NO_NEXTPROTONEG
OPENSSL_free(next_proto.data);
#endif
OPENSSL_free(alpn_ctx.data);
ssl_excert_free(exc);
sk_OPENSSL_STRING_free(ssl_args);
SSL_CONF_CTX_free(cctx);
release_engine(engine);
BIO_free(bio_s_out);
bio_s_out = NULL;
BIO_free(bio_s_msg);
bio_s_msg = NULL;
#ifdef CHARSET_EBCDIC
BIO_meth_free(methods_ebcdic);
#endif
return ret;
}
static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
{
BIO_printf(bio, "%4ld items in the session cache\n",
SSL_CTX_sess_number(ssl_ctx));
BIO_printf(bio, "%4ld client connects (SSL_connect())\n",
SSL_CTX_sess_connect(ssl_ctx));
BIO_printf(bio, "%4ld client renegotiates (SSL_connect())\n",
SSL_CTX_sess_connect_renegotiate(ssl_ctx));
BIO_printf(bio, "%4ld client connects that finished\n",
SSL_CTX_sess_connect_good(ssl_ctx));
BIO_printf(bio, "%4ld server accepts (SSL_accept())\n",
SSL_CTX_sess_accept(ssl_ctx));
BIO_printf(bio, "%4ld server renegotiates (SSL_accept())\n",
SSL_CTX_sess_accept_renegotiate(ssl_ctx));
BIO_printf(bio, "%4ld server accepts that finished\n",
SSL_CTX_sess_accept_good(ssl_ctx));
BIO_printf(bio, "%4ld session cache hits\n", SSL_CTX_sess_hits(ssl_ctx));
BIO_printf(bio, "%4ld session cache misses\n",
SSL_CTX_sess_misses(ssl_ctx));
BIO_printf(bio, "%4ld session cache timeouts\n",
SSL_CTX_sess_timeouts(ssl_ctx));
BIO_printf(bio, "%4ld callback cache hits\n",
SSL_CTX_sess_cb_hits(ssl_ctx));
BIO_printf(bio, "%4ld cache full overflows (%ld allowed)\n",
SSL_CTX_sess_cache_full(ssl_ctx),
SSL_CTX_sess_get_cache_size(ssl_ctx));
}
static int sv_body(int s, int stype, int prot, unsigned char *context)
{
char *buf = NULL;
fd_set readfds;
int ret = 1, width;
int k, i;
unsigned long l;
SSL *con = NULL;
BIO *sbio;
struct timeval timeout;
#if !(defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS))
struct timeval *timeoutp;
#endif
#ifndef OPENSSL_NO_DTLS
# ifndef OPENSSL_NO_SCTP
int isdtls = (stype == SOCK_DGRAM || prot == IPPROTO_SCTP);
# else
int isdtls = (stype == SOCK_DGRAM);
# endif
#endif
buf = app_malloc(bufsize, "server buffer");
if (s_nbio) {
if (!BIO_socket_nbio(s, 1))
ERR_print_errors(bio_err);
else if (!s_quiet)
BIO_printf(bio_err, "Turned on non blocking io\n");
}
con = SSL_new(ctx);
if (con == NULL) {
ret = -1;
goto err;
}
if (s_tlsextdebug) {
SSL_set_tlsext_debug_callback(con, tlsext_cb);
SSL_set_tlsext_debug_arg(con, bio_s_out);
}
if (context != NULL
&& !SSL_set_session_id_context(con, context,
strlen((char *)context))) {
BIO_printf(bio_err, "Error setting session id context\n");
ret = -1;
goto err;
}
if (!SSL_clear(con)) {
BIO_printf(bio_err, "Error clearing SSL connection\n");
ret = -1;
goto err;
}
#ifndef OPENSSL_NO_DTLS
if (isdtls) {
# ifndef OPENSSL_NO_SCTP
if (prot == IPPROTO_SCTP)
sbio = BIO_new_dgram_sctp(s, BIO_NOCLOSE);
else
# endif
sbio = BIO_new_dgram(s, BIO_NOCLOSE);
if (enable_timeouts) {
timeout.tv_sec = 0;
timeout.tv_usec = DGRAM_RCV_TIMEOUT;
BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
timeout.tv_sec = 0;
timeout.tv_usec = DGRAM_SND_TIMEOUT;
BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
}
if (socket_mtu) {
if (socket_mtu < DTLS_get_link_min_mtu(con)) {
BIO_printf(bio_err, "MTU too small. Must be at least %ld\n",
DTLS_get_link_min_mtu(con));
ret = -1;
BIO_free(sbio);
goto err;
}
SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
if (!DTLS_set_link_mtu(con, socket_mtu)) {
BIO_printf(bio_err, "Failed to set MTU\n");
ret = -1;
BIO_free(sbio);
goto err;
}
} else
/* want to do MTU discovery */
BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
# ifndef OPENSSL_NO_SCTP
if (prot != IPPROTO_SCTP)
# endif
/* Turn on cookie exchange. Not necessary for SCTP */
SSL_set_options(con, SSL_OP_COOKIE_EXCHANGE);
} else
#endif
sbio = BIO_new_socket(s, BIO_NOCLOSE);
if (sbio == NULL) {
BIO_printf(bio_err, "Unable to create BIO\n");
ERR_print_errors(bio_err);
goto err;
}
if (s_nbio_test) {
BIO *test;
test = BIO_new(BIO_f_nbio_test());
sbio = BIO_push(test, sbio);
}
SSL_set_bio(con, sbio, sbio);
SSL_set_accept_state(con);
/* SSL_set_fd(con,s); */
if (s_debug) {
BIO_set_callback(SSL_get_rbio(con), bio_dump_callback);
BIO_set_callback_arg(SSL_get_rbio(con), (char *)bio_s_out);
}
if (s_msg) {
#ifndef OPENSSL_NO_SSL_TRACE
if (s_msg == 2)
SSL_set_msg_callback(con, SSL_trace);
else
#endif
SSL_set_msg_callback(con, msg_cb);
SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
}
if (s_tlsextdebug) {
SSL_set_tlsext_debug_callback(con, tlsext_cb);
SSL_set_tlsext_debug_arg(con, bio_s_out);
}
if (early_data) {
int write_header = 1, edret = SSL_READ_EARLY_DATA_ERROR;
size_t readbytes;
while (edret != SSL_READ_EARLY_DATA_FINISH) {
for (;;) {
edret = SSL_read_early_data(con, buf, bufsize, &readbytes);
if (edret != SSL_READ_EARLY_DATA_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) {
if (SSL_get_early_data_status(con) == SSL_EARLY_DATA_NOT_SENT)
BIO_printf(bio_s_out, "No early data received\n");
else
BIO_printf(bio_s_out, "Early data was rejected\n");
} else {
BIO_printf(bio_s_out, "\nEnd of early data\n");
}
if (SSL_is_init_finished(con))
print_connection_info(con);
}
if (fileno_stdin() > s)
width = fileno_stdin() + 1;
else
width = s + 1;
for (;;) {
int read_from_terminal;
int read_from_sslcon;
read_from_terminal = 0;
read_from_sslcon = SSL_has_pending(con)
|| (async && SSL_waiting_for_async(con));
if (!read_from_sslcon) {
FD_ZERO(&readfds);
#if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS)
openssl_fdset(fileno_stdin(), &readfds);
#endif
openssl_fdset(s, &readfds);
/*
* Note: under VMS with SOCKETSHR the second parameter is
* currently of type (int *) whereas under other systems it is
* (void *) if you don't have a cast it will choke the compiler:
* if you do have a cast then you can either go for (int *) or
* (void *).
*/
#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
/*
* Under DOS (non-djgpp) and Windows we can't select on stdin:
* only on sockets. As a workaround we timeout the select every
* second and check for any keypress. In a proper Windows
* application we wouldn't do this because it is inefficient.
*/
timeout.tv_sec = 1;
timeout.tv_usec = 0;
i = select(width, (void *)&readfds, NULL, NULL, &timeout);
if (has_stdin_waiting())
read_from_terminal = 1;
if ((i < 0) || (!i && !read_from_terminal))
continue;
#else
if (SSL_is_dtls(con) && DTLSv1_get_timeout(con, &timeout))
timeoutp = &timeout;
else
timeoutp = NULL;
i = select(width, (void *)&readfds, NULL, NULL, timeoutp);
if ((SSL_is_dtls(con)) && DTLSv1_handle_timeout(con) > 0)
BIO_printf(bio_err, "TIMEOUT occurred\n");
if (i <= 0)
continue;
if (FD_ISSET(fileno_stdin(), &readfds))
read_from_terminal = 1;
#endif
if (FD_ISSET(s, &readfds))
read_from_sslcon = 1;
}
if (read_from_terminal) {
if (s_crlf) {
int j, lf_num;
i = raw_read_stdin(buf, bufsize / 2);
lf_num = 0;
/* both loops are skipped when i <= 0 */
for (j = 0; j < i; j++)
if (buf[j] == '\n')
lf_num++;
for (j = i - 1; j >= 0; j--) {
buf[j + lf_num] = buf[j];
if (buf[j] == '\n') {
lf_num--;
i++;
buf[j + lf_num] = '\r';
}
}
assert(lf_num == 0);
} else {
i = raw_read_stdin(buf, bufsize);
}
if (!s_quiet && !s_brief) {
if ((i <= 0) || (buf[0] == 'Q')) {
BIO_printf(bio_s_out, "DONE\n");
(void)BIO_flush(bio_s_out);
BIO_closesocket(s);
close_accept_socket();
ret = -11;
goto err;
}
if ((i <= 0) || (buf[0] == 'q')) {
BIO_printf(bio_s_out, "DONE\n");
(void)BIO_flush(bio_s_out);
if (SSL_version(con) != DTLS1_VERSION)
BIO_closesocket(s);
/*
* close_accept_socket(); ret= -11;
*/
goto err;
}
if ((buf[0] == 'r') && ((buf[1] == '\n') || (buf[1] == '\r'))) {
SSL_renegotiate(con);
i = SSL_do_handshake(con);
printf("SSL_do_handshake -> %d\n", i);
i = 0; /* 13; */
continue;
}
if ((buf[0] == 'R') && ((buf[1] == '\n') || (buf[1] == '\r'))) {
SSL_set_verify(con,
SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE,
NULL);
SSL_renegotiate(con);
i = SSL_do_handshake(con);
printf("SSL_do_handshake -> %d\n", i);
i = 0; /* 13; */
continue;
}
if ((buf[0] == 'K' || buf[0] == 'k')
&& ((buf[1] == '\n') || (buf[1] == '\r'))) {
SSL_key_update(con, buf[0] == 'K' ?
SSL_KEY_UPDATE_REQUESTED
: SSL_KEY_UPDATE_NOT_REQUESTED);
i = SSL_do_handshake(con);
printf("SSL_do_handshake -> %d\n", i);
i = 0;
continue;
}
if (buf[0] == 'c' && ((buf[1] == '\n') || (buf[1] == '\r'))) {
SSL_set_verify(con, SSL_VERIFY_PEER, NULL);
i = SSL_verify_client_post_handshake(con);
if (i == 0) {
printf("Failed to initiate request\n");
ERR_print_errors(bio_err);
} else {
i = SSL_do_handshake(con);
printf("SSL_do_handshake -> %d\n", i);
i = 0;
}
continue;
}
if (buf[0] == 'P') {
static const char str[] = "Lets print some clear text\n";
BIO_write(SSL_get_wbio(con), str, sizeof(str) -1);
}
if (buf[0] == 'S') {
print_stats(bio_s_out, SSL_get_SSL_CTX(con));
}
}
#ifdef CHARSET_EBCDIC
ebcdic2ascii(buf, buf, i);
#endif
l = k = 0;
for (;;) {
/* should do a select for the write */
#ifdef RENEG
static count = 0;
if (++count == 100) {
count = 0;
SSL_renegotiate(con);
}
#endif
k = SSL_write(con, &(buf[l]), (unsigned int)i);
#ifndef OPENSSL_NO_SRP
while (SSL_get_error(con, k) == SSL_ERROR_WANT_X509_LOOKUP) {
BIO_printf(bio_s_out, "LOOKUP renego during write\n");
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");
k = SSL_write(con, &(buf[l]), (unsigned int)i);
}
#endif
switch (SSL_get_error(con, k)) {
case SSL_ERROR_NONE:
break;
case SSL_ERROR_WANT_ASYNC:
BIO_printf(bio_s_out, "Write BLOCK (Async)\n");
(void)BIO_flush(bio_s_out);
wait_for_async(con);
break;
case SSL_ERROR_WANT_WRITE:
case SSL_ERROR_WANT_READ:
case SSL_ERROR_WANT_X509_LOOKUP:
BIO_printf(bio_s_out, "Write BLOCK\n");
(void)BIO_flush(bio_s_out);
break;
case SSL_ERROR_WANT_ASYNC_JOB:
/*
* This shouldn't ever happen in s_server. Treat as an error
*/
case SSL_ERROR_SYSCALL:
case SSL_ERROR_SSL:
BIO_printf(bio_s_out, "ERROR\n");
(void)BIO_flush(bio_s_out);
ERR_print_errors(bio_err);
ret = 1;
goto err;
/* break; */
case SSL_ERROR_ZERO_RETURN:
BIO_printf(bio_s_out, "DONE\n");
(void)BIO_flush(bio_s_out);
ret = 1;
goto err;
}
if (k > 0) {
l += k;
i -= k;
}
if (i <= 0)
break;
}
}
if (read_from_sslcon) {
/*
* init_ssl_connection handles all async events itself so if we're
* waiting for async then we shouldn't go back into
* init_ssl_connection
*/
if ((!async || !SSL_waiting_for_async(con))
&& !SSL_is_init_finished(con)) {
i = init_ssl_connection(con);
if (i < 0) {
ret = 0;
goto err;
} else if (i == 0) {
ret = 1;
goto err;
}
} else {
again:
i = SSL_read(con, (char *)buf, bufsize);
#ifndef OPENSSL_NO_SRP
while (SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP) {
BIO_printf(bio_s_out, "LOOKUP renego during read\n");
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_read(con, (char *)buf, bufsize);
}
#endif
switch (SSL_get_error(con, i)) {
case SSL_ERROR_NONE:
#ifdef CHARSET_EBCDIC
ascii2ebcdic(buf, buf, i);
#endif
raw_write_stdout(buf, (unsigned int)i);
(void)BIO_flush(bio_s_out);
if (SSL_has_pending(con))
goto again;
break;
case SSL_ERROR_WANT_ASYNC:
BIO_printf(bio_s_out, "Read BLOCK (Async)\n");
(void)BIO_flush(bio_s_out);
wait_for_async(con);
break;
case SSL_ERROR_WANT_WRITE:
case SSL_ERROR_WANT_READ:
BIO_printf(bio_s_out, "Read BLOCK\n");
(void)BIO_flush(bio_s_out);
break;
case SSL_ERROR_WANT_ASYNC_JOB:
/*
* This shouldn't ever happen in s_server. Treat as an error
*/
case SSL_ERROR_SYSCALL:
case SSL_ERROR_SSL:
BIO_printf(bio_s_out, "ERROR\n");
(void)BIO_flush(bio_s_out);
ERR_print_errors(bio_err);
ret = 1;
goto err;
case SSL_ERROR_ZERO_RETURN:
BIO_printf(bio_s_out, "DONE\n");
(void)BIO_flush(bio_s_out);
ret = 1;
goto err;
}
}
}
}
err:
if (con != NULL) {
BIO_printf(bio_s_out, "shutting down SSL\n");
do_ssl_shutdown(con);
SSL_free(con);
}
BIO_printf(bio_s_out, "CONNECTION CLOSED\n");
OPENSSL_clear_free(buf, bufsize);
return ret;
}
static void close_accept_socket(void)
{
BIO_printf(bio_err, "shutdown accept socket\n");
if (accept_socket >= 0) {
BIO_closesocket(accept_socket);
}
}
static int is_retryable(SSL *con, int i)
{
int err = SSL_get_error(con, i);
/* If it's not a fatal error, it must be retryable */
return (err != SSL_ERROR_SSL)
&& (err != SSL_ERROR_SYSCALL)
&& (err != SSL_ERROR_ZERO_RETURN);
}
static int init_ssl_connection(SSL *con)
{
int i;
long verify_err;
int retry = 0;
if (dtlslisten || stateless) {
BIO_ADDR *client = NULL;
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);
}
if (i > 0) {
BIO *wbio;
int fd = -1;
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");
BIO_ADDR_free(client);
return 0;
}
(void)BIO_ctrl_set_connected(wbio, client);
BIO_ADDR_free(client);
dtlslisten = 0;
} else {
stateless = 0;
}
i = SSL_accept(con);
} else {
BIO_ADDR_free(client);
}
} 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
#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));
}
if (i <= 0) {
if (((dtlslisten || stateless) && i == 0)
|| (!dtlslisten && !stateless && retry)) {
BIO_printf(bio_s_out, "DELAY\n");
return 1;
}
BIO_printf(bio_err, "ERROR\n");
verify_err = SSL_get_verify_result(con);
if (verify_err != X509_V_OK) {
BIO_printf(bio_err, "verify error:%s\n",
X509_verify_cert_error_string(verify_err));
}
/* Always print any error messages */
ERR_print_errors(bio_err);
return 0;
}
print_connection_info(con);
return 1;
}
static void print_connection_info(SSL *con)
{
const char *str;
X509 *peer;
char buf[BUFSIZ];
#if !defined(OPENSSL_NO_NEXTPROTONEG)
const unsigned char *next_proto_neg;
unsigned next_proto_neg_len;
#endif
unsigned char *exportedkeymat;
int i;
if (s_brief)
print_ssl_summary(con);
PEM_write_bio_SSL_SESSION(bio_s_out, SSL_get_session(con));
peer = SSL_get_peer_certificate(con);
if (peer != NULL) {
BIO_printf(bio_s_out, "Client certificate\n");
PEM_write_bio_X509(bio_s_out, peer);
dump_cert_text(bio_s_out, peer);
X509_free(peer);
peer = NULL;
}
if (SSL_get_shared_ciphers(con, buf, sizeof(buf)) != NULL)
BIO_printf(bio_s_out, "Shared ciphers:%s\n", buf);
str = SSL_CIPHER_get_name(SSL_get_current_cipher(con));
ssl_print_sigalgs(bio_s_out, con);
#ifndef OPENSSL_NO_EC
ssl_print_point_formats(bio_s_out, con);
ssl_print_groups(bio_s_out, con, 0);
#endif
print_ca_names(bio_s_out, con);
BIO_printf(bio_s_out, "CIPHER is %s\n", (str != NULL) ? str : "(NONE)");
#if !defined(OPENSSL_NO_NEXTPROTONEG)
SSL_get0_next_proto_negotiated(con, &next_proto_neg, &next_proto_neg_len);
if (next_proto_neg) {
BIO_printf(bio_s_out, "NEXTPROTO is ");
BIO_write(bio_s_out, next_proto_neg, next_proto_neg_len);
BIO_printf(bio_s_out, "\n");
}
#endif
#ifndef OPENSSL_NO_SRTP
{
SRTP_PROTECTION_PROFILE *srtp_profile
= SSL_get_selected_srtp_profile(con);
if (srtp_profile)
BIO_printf(bio_s_out, "SRTP Extension negotiated, profile=%s\n",
srtp_profile->name);
}
#endif
if (SSL_session_reused(con))
BIO_printf(bio_s_out, "Reused session-id\n");
BIO_printf(bio_s_out, "Secure Renegotiation IS%s supported\n",
SSL_get_secure_renegotiation_support(con) ? "" : " NOT");
if ((SSL_get_options(con) & SSL_OP_NO_RENEGOTIATION))
BIO_printf(bio_s_out, "Renegotiation is DISABLED\n");
if (keymatexportlabel != NULL) {
BIO_printf(bio_s_out, "Keying material exporter:\n");
BIO_printf(bio_s_out, " Label: '%s'\n", keymatexportlabel);
BIO_printf(bio_s_out, " Length: %i bytes\n", keymatexportlen);
exportedkeymat = app_malloc(keymatexportlen, "export key");
if (!SSL_export_keying_material(con, exportedkeymat,
keymatexportlen,
keymatexportlabel,
strlen(keymatexportlabel),
NULL, 0, 0)) {
BIO_printf(bio_s_out, " Error\n");
} else {
BIO_printf(bio_s_out, " Keying material: ");
for (i = 0; i < keymatexportlen; i++)
BIO_printf(bio_s_out, "%02X", exportedkeymat[i]);
BIO_printf(bio_s_out, "\n");
}
OPENSSL_free(exportedkeymat);
}
#ifndef OPENSSL_NO_KTLS
if (BIO_get_ktls_send(SSL_get_wbio(con)))
BIO_printf(bio_err, "Using Kernel TLS for sending\n");
if (BIO_get_ktls_recv(SSL_get_rbio(con)))
BIO_printf(bio_err, "Using Kernel TLS for receiving\n");
#endif
(void)BIO_flush(bio_s_out);
}
#ifndef OPENSSL_NO_DH
static DH *load_dh_param(const char *dhfile)
{
DH *ret = NULL;
BIO *bio;
if ((bio = BIO_new_file(dhfile, "r")) == NULL)
goto err;
ret = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
err:
BIO_free(bio);
return ret;
}
#endif
static int www_body(int s, int stype, int prot, unsigned char *context)
{
char *buf = NULL;
int ret = 1;
int i, j, k, dot;
SSL *con;
const SSL_CIPHER *c;
BIO *io, *ssl_bio, *sbio;
#ifdef RENEG
int total_bytes = 0;
#endif
int width;
fd_set readfds;
const char *opmode;
/* Set width for a select call if needed */
width = s + 1;
buf = app_malloc(bufsize, "server www buffer");
io = BIO_new(BIO_f_buffer());
ssl_bio = BIO_new(BIO_f_ssl());
if ((io == NULL) || (ssl_bio == NULL))
goto err;
if (s_nbio) {
if (!BIO_socket_nbio(s, 1))
ERR_print_errors(bio_err);
else if (!s_quiet)
BIO_printf(bio_err, "Turned on non blocking io\n");
}
/* lets make the output buffer a reasonable size */
if (!BIO_set_write_buffer_size(io, bufsize))
goto err;
if ((con = SSL_new(ctx)) == NULL)
goto err;
if (s_tlsextdebug) {
SSL_set_tlsext_debug_callback(con, tlsext_cb);
SSL_set_tlsext_debug_arg(con, bio_s_out);
}
if (context != NULL
&& !SSL_set_session_id_context(con, context,
strlen((char *)context))) {
SSL_free(con);
goto err;
}
sbio = BIO_new_socket(s, BIO_NOCLOSE);
if (s_nbio_test) {
BIO *test;
test = BIO_new(BIO_f_nbio_test());
sbio = BIO_push(test, sbio);
}
SSL_set_bio(con, sbio, sbio);
SSL_set_accept_state(con);
/* No need to free |con| after this. Done by BIO_free(ssl_bio) */
BIO_set_ssl(ssl_bio, con, BIO_CLOSE);
BIO_push(io, ssl_bio);
#ifdef CHARSET_EBCDIC
io = BIO_push(BIO_new(BIO_f_ebcdic_filter()), io);
#endif
if (s_debug) {
BIO_set_callback(SSL_get_rbio(con), bio_dump_callback);
BIO_set_callback_arg(SSL_get_rbio(con), (char *)bio_s_out);
}
if (s_msg) {
#ifndef OPENSSL_NO_SSL_TRACE
if (s_msg == 2)
SSL_set_msg_callback(con, SSL_trace);
else
#endif
SSL_set_msg_callback(con, msg_cb);
SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
}
for (;;) {
i = BIO_gets(io, buf, bufsize - 1);
if (i < 0) { /* error */
if (!BIO_should_retry(io) && !SSL_waiting_for_async(con)) {
if (!s_quiet)
ERR_print_errors(bio_err);
goto err;
} else {
BIO_printf(bio_s_out, "read R BLOCK\n");
#ifndef OPENSSL_NO_SRP
if (BIO_should_io_special(io)
&& BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
BIO_printf(bio_s_out, "LOOKUP renego during read\n");
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");
continue;
}
#endif
#if !defined(OPENSSL_SYS_MSDOS)
sleep(1);
#endif
continue;
}
} else if (i == 0) { /* end of input */
ret = 1;
goto end;
}
/* else we have data */
if (((www == 1) && (strncmp("GET ", buf, 4) == 0)) ||
((www == 2) && (strncmp("GET /stats ", buf, 11) == 0))) {
char *p;
X509 *peer = NULL;
STACK_OF(SSL_CIPHER) *sk;
static const char *space = " ";
if (www == 1 && strncmp("GET /reneg", buf, 10) == 0) {
if (strncmp("GET /renegcert", buf, 14) == 0)
SSL_set_verify(con,
SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE,
NULL);
i = SSL_renegotiate(con);
BIO_printf(bio_s_out, "SSL_renegotiate -> %d\n", i);
/* Send the HelloRequest */
i = SSL_do_handshake(con);
if (i <= 0) {
BIO_printf(bio_s_out, "SSL_do_handshake() Retval %d\n",
SSL_get_error(con, i));
ERR_print_errors(bio_err);
goto err;
}
/* Wait for a ClientHello to come back */
FD_ZERO(&readfds);
openssl_fdset(s, &readfds);
i = select(width, (void *)&readfds, NULL, NULL, NULL);
if (i <= 0 || !FD_ISSET(s, &readfds)) {
BIO_printf(bio_s_out,
"Error waiting for client response\n");
ERR_print_errors(bio_err);
goto err;
}
/*
* We're not actually expecting any data here and we ignore
* any that is sent. This is just to force the handshake that
* we're expecting to come from the client. If they haven't
* sent one there's not much we can do.
*/
BIO_gets(io, buf, bufsize - 1);
}
BIO_puts(io,
"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
BIO_puts(io, "<HTML><BODY BGCOLOR=\"#ffffff\">\n");
BIO_puts(io, "<pre>\n");
/* BIO_puts(io, OpenSSL_version(OPENSSL_VERSION)); */
BIO_puts(io, "\n");
for (i = 0; i < local_argc; i++) {
const char *myp;
for (myp = local_argv[i]; *myp; myp++)
switch (*myp) {
case '<':
BIO_puts(io, "&lt;");
break;
case '>':
BIO_puts(io, "&gt;");
break;
case '&':
BIO_puts(io, "&amp;");
break;
default:
BIO_write(io, myp, 1);
break;
}
BIO_write(io, " ", 1);
}
BIO_puts(io, "\n");
BIO_printf(io,
"Secure Renegotiation IS%s supported\n",
SSL_get_secure_renegotiation_support(con) ?
"" : " NOT");
/*
* The following is evil and should not really be done
*/
BIO_printf(io, "Ciphers supported in s_server binary\n");
sk = SSL_get_ciphers(con);
j = sk_SSL_CIPHER_num(sk);
for (i = 0; i < j; i++) {
c = sk_SSL_CIPHER_value(sk, i);
BIO_printf(io, "%-11s:%-25s ",
SSL_CIPHER_get_version(c), SSL_CIPHER_get_name(c));
if ((((i + 1) % 2) == 0) && (i + 1 != j))
BIO_puts(io, "\n");
}
BIO_puts(io, "\n");
p = SSL_get_shared_ciphers(con, buf, bufsize);
if (p != NULL) {
BIO_printf(io,
"---\nCiphers common between both SSL end points:\n");
j = i = 0;
while (*p) {
if (*p == ':') {
BIO_write(io, space, 26 - j);
i++;
j = 0;
BIO_write(io, ((i % 3) ? " " : "\n"), 1);
} else {
BIO_write(io, p, 1);
j++;
}
p++;
}
BIO_puts(io, "\n");
}
ssl_print_sigalgs(io, con);
#ifndef OPENSSL_NO_EC
ssl_print_groups(io, con, 0);
#endif
print_ca_names(io, con);
BIO_printf(io, (SSL_session_reused(con)
? "---\nReused, " : "---\nNew, "));
c = SSL_get_current_cipher(con);
BIO_printf(io, "%s, Cipher is %s\n",
SSL_CIPHER_get_version(c), SSL_CIPHER_get_name(c));
SSL_SESSION_print(io, SSL_get_session(con));
BIO_printf(io, "---\n");
print_stats(io, SSL_get_SSL_CTX(con));
BIO_printf(io, "---\n");
peer = SSL_get_peer_certificate(con);
if (peer != NULL) {
BIO_printf(io, "Client certificate\n");
X509_print(io, peer);
PEM_write_bio_X509(io, peer);
X509_free(peer);
peer = NULL;
} else {
BIO_puts(io, "no client certificate available\n");
}
BIO_puts(io, "</pre></BODY></HTML>\r\n\r\n");
break;
} else if ((www == 2 || www == 3)
&& (strncmp("GET /", buf, 5) == 0)) {
BIO *file;
char *p, *e;
static const char *text =
"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
/* skip the '/' */
p = &(buf[5]);
dot = 1;
for (e = p; *e != '\0'; e++) {
if (e[0] == ' ')
break;
if (e[0] == ':') {
/* Windows drive. We treat this the same way as ".." */
dot = -1;
break;
}
switch (dot) {
case 1:
dot = (e[0] == '.') ? 2 : 0;
break;
case 2:
dot = (e[0] == '.') ? 3 : 0;
break;
case 3:
dot = (e[0] == '/' || e[0] == '\\') ? -1 : 0;
break;
}
if (dot == 0)
dot = (e[0] == '/' || e[0] == '\\') ? 1 : 0;
}
dot = (dot == 3) || (dot == -1); /* filename contains ".."
* component */
if (*e == '\0') {
BIO_puts(io, text);
BIO_printf(io, "'%s' is an invalid file name\r\n", p);
break;
}
*e = '\0';
if (dot) {
BIO_puts(io, text);
BIO_printf(io, "'%s' contains '..' or ':'\r\n", p);
break;
}
if (*p == '/' || *p == '\\') {
BIO_puts(io, text);
BIO_printf(io, "'%s' is an invalid path\r\n", p);
break;
}
/* if a directory, do the index thang */
if (app_isdir(p) > 0) {
BIO_puts(io, text);
BIO_printf(io, "'%s' is a directory\r\n", p);
break;
}
opmode = (http_server_binmode == 1) ? "rb" : "r";
if ((file = BIO_new_file(p, opmode)) == NULL) {
BIO_puts(io, text);
BIO_printf(io, "Error opening '%s' mode='%s'\r\n", p, opmode);
ERR_print_errors(io);
break;
}
if (!s_quiet)
BIO_printf(bio_err, "FILE:%s\n", p);
if (www == 2) {
i = strlen(p);
if (((i > 5) && (strcmp(&(p[i - 5]), ".html") == 0)) ||
((i > 4) && (strcmp(&(p[i - 4]), ".php") == 0)) ||
((i > 4) && (strcmp(&(p[i - 4]), ".htm") == 0)))
BIO_puts(io,
"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
else
BIO_puts(io,
"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
}
/* send the file */
#ifndef OPENSSL_NO_KTLS
if (use_sendfile) {
FILE *fp = NULL;
int fd;
struct stat st;
off_t offset = 0;
size_t filesize;
BIO_get_fp(file, &fp);
fd = fileno(fp);
if (fstat(fd, &st) < 0) {
BIO_printf(io, "Error fstat '%s'\r\n", p);
ERR_print_errors(io);
goto write_error;
}
filesize = st.st_size;
if (((int)BIO_flush(io)) < 0)
goto write_error;
for (;;) {
i = SSL_sendfile(con, fd, offset, filesize, 0);
if (i < 0) {
BIO_printf(io, "Error SSL_sendfile '%s'\r\n", p);
ERR_print_errors(io);
break;
} else {
offset += i;
filesize -= i;
}
if (filesize <= 0) {
if (!s_quiet)
BIO_printf(bio_err, "KTLS SENDFILE '%s' OK\n", p);
break;
}
}
} else
#endif
{
for (;;) {
i = BIO_read(file, buf, bufsize);
if (i <= 0)
break;
#ifdef RENEG
total_bytes += i;
BIO_printf(bio_err, "%d\n", i);
if (total_bytes > 3 * 1024) {
total_bytes = 0;
BIO_printf(bio_err, "RENEGOTIATE\n");
SSL_renegotiate(con);
}
#endif
for (j = 0; j < i;) {
#ifdef RENEG
static count = 0;
if (++count == 13)
SSL_renegotiate(con);
#endif
k = BIO_write(io, &(buf[j]), i - j);
if (k <= 0) {
if (!BIO_should_retry(io)
&& !SSL_waiting_for_async(con)) {
goto write_error;
} else {
BIO_printf(bio_s_out, "rwrite W BLOCK\n");
}
} else {
j += k;
}
}
}
}
write_error:
BIO_free(file);
break;
}
}
for (;;) {
i = (int)BIO_flush(io);
if (i <= 0) {
if (!BIO_should_retry(io))
break;
} else
break;
}
end:
/* make sure we re-use sessions */
do_ssl_shutdown(con);
err:
OPENSSL_free(buf);
BIO_free_all(io);
return ret;
}
static int rev_body(int s, int stype, int prot, unsigned char *context)
{
char *buf = NULL;
int i;
int ret = 1;
SSL *con;
BIO *io, *ssl_bio, *sbio;
buf = app_malloc(bufsize, "server rev buffer");
io = BIO_new(BIO_f_buffer());
ssl_bio = BIO_new(BIO_f_ssl());
if ((io == NULL) || (ssl_bio == NULL))
goto err;
/* lets make the output buffer a reasonable size */
if (!BIO_set_write_buffer_size(io, bufsize))
goto err;
if ((con = SSL_new(ctx)) == NULL)
goto err;
if (s_tlsextdebug) {
SSL_set_tlsext_debug_callback(con, tlsext_cb);
SSL_set_tlsext_debug_arg(con, bio_s_out);
}
if (context != NULL
&& !SSL_set_session_id_context(con, context,
strlen((char *)context))) {
SSL_free(con);
ERR_print_errors(bio_err);
goto err;
}
sbio = BIO_new_socket(s, BIO_NOCLOSE);
SSL_set_bio(con, sbio, sbio);
SSL_set_accept_state(con);
/* No need to free |con| after this. Done by BIO_free(ssl_bio) */
BIO_set_ssl(ssl_bio, con, BIO_CLOSE);
BIO_push(io, ssl_bio);
#ifdef CHARSET_EBCDIC
io = BIO_push(BIO_new(BIO_f_ebcdic_filter()), io);
#endif
if (s_debug) {
BIO_set_callback(SSL_get_rbio(con), bio_dump_callback);
BIO_set_callback_arg(SSL_get_rbio(con), (char *)bio_s_out);
}
if (s_msg) {
#ifndef OPENSSL_NO_SSL_TRACE
if (s_msg == 2)
SSL_set_msg_callback(con, SSL_trace);
else
#endif
SSL_set_msg_callback(con, msg_cb);
SSL_set_msg_callback_arg(con, bio_s_msg ? bio_s_msg : bio_s_out);
}
for (;;) {
i = BIO_do_handshake(io);
if (i > 0)
break;
if (!BIO_should_retry(io)) {
BIO_puts(bio_err, "CONNECTION FAILURE\n");
ERR_print_errors(bio_err);
goto end;
}
#ifndef OPENSSL_NO_SRP
if (BIO_should_io_special(io)
&& BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
BIO_printf(bio_s_out, "LOOKUP renego during accept\n");
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");
continue;
}
#endif
}
BIO_printf(bio_err, "CONNECTION ESTABLISHED\n");
print_ssl_summary(con);
for (;;) {
i = BIO_gets(io, buf, bufsize - 1);
if (i < 0) { /* error */
if (!BIO_should_retry(io)) {
if (!s_quiet)
ERR_print_errors(bio_err);
goto err;
} else {
BIO_printf(bio_s_out, "read R BLOCK\n");
#ifndef OPENSSL_NO_SRP
if (BIO_should_io_special(io)
&& BIO_get_retry_reason(io) == BIO_RR_SSL_X509_LOOKUP) {
BIO_printf(bio_s_out, "LOOKUP renego during read\n");
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");
continue;
}
#endif
#if !defined(OPENSSL_SYS_MSDOS)
sleep(1);
#endif
continue;
}
} else if (i == 0) { /* end of input */
ret = 1;
BIO_printf(bio_err, "CONNECTION CLOSED\n");
goto end;
} else {
char *p = buf + i - 1;
while (i && (*p == '\n' || *p == '\r')) {
p--;
i--;
}
if (!s_ign_eof && (i == 5) && (strncmp(buf, "CLOSE", 5) == 0)) {
ret = 1;
BIO_printf(bio_err, "CONNECTION CLOSED\n");
goto end;
}
BUF_reverse((unsigned char *)buf, NULL, i);
buf[i] = '\n';
BIO_write(io, buf, i + 1);
for (;;) {
i = BIO_flush(io);
if (i > 0)
break;
if (!BIO_should_retry(io))
goto end;
}
}
}
end:
/* make sure we re-use sessions */
do_ssl_shutdown(con);
err:
OPENSSL_free(buf);
BIO_free_all(io);
return ret;
}
#define MAX_SESSION_ID_ATTEMPTS 10
static int generate_session_id(SSL *ssl, unsigned char *id,
unsigned int *id_len)
{
unsigned int count = 0;
unsigned int session_id_prefix_len = strlen(session_id_prefix);
do {
if (RAND_bytes(id, *id_len) <= 0)
return 0;
/*
* Prefix the session_id with the required prefix. NB: If our prefix
* is too long, clip it - but there will be worse effects anyway, eg.
* the server could only possibly create 1 session ID (ie. the
* prefix!) so all future session negotiations will fail due to
* conflicts.
*/
memcpy(id, session_id_prefix,
(session_id_prefix_len < *id_len) ?
session_id_prefix_len : *id_len);
}
while (SSL_has_matching_session_id(ssl, id, *id_len) &&
(++count < MAX_SESSION_ID_ATTEMPTS));
if (count >= MAX_SESSION_ID_ATTEMPTS)
return 0;
return 1;
}
/*
* By default s_server uses an in-memory cache which caches SSL_SESSION
* structures without any serialisation. This hides some bugs which only
* become apparent in deployed servers. By implementing a basic external
* session cache some issues can be debugged using s_server.
*/
typedef struct simple_ssl_session_st {
unsigned char *id;
unsigned int idlen;
unsigned char *der;
int derlen;
struct simple_ssl_session_st *next;
} simple_ssl_session;
static simple_ssl_session *first = NULL;
static int add_session(SSL *ssl, SSL_SESSION *session)
{
simple_ssl_session *sess = app_malloc(sizeof(*sess), "get session");
unsigned char *p;
SSL_SESSION_get_id(session, &sess->idlen);
sess->derlen = i2d_SSL_SESSION(session, NULL);
if (sess->derlen < 0) {
BIO_printf(bio_err, "Error encoding session\n");
OPENSSL_free(sess);
return 0;
}
sess->id = OPENSSL_memdup(SSL_SESSION_get_id(session, NULL), sess->idlen);
sess->der = app_malloc(sess->derlen, "get session buffer");
if (!sess->id) {
BIO_printf(bio_err, "Out of memory adding to external cache\n");
OPENSSL_free(sess->id);
OPENSSL_free(sess->der);
OPENSSL_free(sess);
return 0;
}
p = sess->der;
/* Assume it still works. */
if (i2d_SSL_SESSION(session, &p) != sess->derlen) {
BIO_printf(bio_err, "Unexpected session encoding length\n");
OPENSSL_free(sess->id);
OPENSSL_free(sess->der);
OPENSSL_free(sess);
return 0;
}
sess->next = first;
first = sess;
BIO_printf(bio_err, "New session added to external cache\n");
return 0;
}
static SSL_SESSION *get_session(SSL *ssl, const unsigned char *id, int idlen,
int *do_copy)
{
simple_ssl_session *sess;
*do_copy = 0;
for (sess = first; sess; sess = sess->next) {
if (idlen == (int)sess->idlen && !memcmp(sess->id, id, idlen)) {
const unsigned char *p = sess->der;
BIO_printf(bio_err, "Lookup session: cache hit\n");
return d2i_SSL_SESSION(NULL, &p, sess->derlen);
}
}
BIO_printf(bio_err, "Lookup session: cache miss\n");
return NULL;
}
static void del_session(SSL_CTX *sctx, SSL_SESSION *session)
{
simple_ssl_session *sess, *prev = NULL;
const unsigned char *id;
unsigned int idlen;
id = SSL_SESSION_get_id(session, &idlen);
for (sess = first; sess; sess = sess->next) {
if (idlen == sess->idlen && !memcmp(sess->id, id, idlen)) {
if (prev)
prev->next = sess->next;
else
first = sess->next;
OPENSSL_free(sess->id);
OPENSSL_free(sess->der);
OPENSSL_free(sess);
return;
}
prev = sess;
}
}
static void init_session_cache_ctx(SSL_CTX *sctx)
{
SSL_CTX_set_session_cache_mode(sctx,
SSL_SESS_CACHE_NO_INTERNAL |
SSL_SESS_CACHE_SERVER);
SSL_CTX_sess_set_new_cb(sctx, add_session);
SSL_CTX_sess_set_get_cb(sctx, get_session);
SSL_CTX_sess_set_remove_cb(sctx, del_session);
}
static void free_sessions(void)
{
simple_ssl_session *sess, *tsess;
for (sess = first; sess;) {
OPENSSL_free(sess->id);
OPENSSL_free(sess->der);
tsess = sess;
sess = sess->next;
OPENSSL_free(tsess);
}
first = NULL;
}
#endif /* OPENSSL_NO_SOCK */
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