Commit message: CVE-2016-0798: avoid memory leak in SRP

The SRP user database lookup method SRP_VBASE_get_by_user had confusing
memory management semantics; the returned pointer was sometimes newly
allocated, and sometimes owned by the callee. The calling code has no
way of distinguishing these two cases.

Specifically, SRP servers that configure a secret seed to hide valid
login information are vulnerable to a memory leak: an attacker
connecting with an invalid username can cause a memory leak of around
300 bytes per connection.

Servers that do not configure SRP, or configure SRP but do not configure
a seed are not vulnerable.

In Apache, the seed directive is known as SSLSRPUnknownUserSeed.

To mitigate the memory leak, the seed handling in SRP_VBASE_get_by_user
is now disabled even if the user has configured a seed.

Applications are advised to migrate to SRP_VBASE_get1_by_user. However,
note that OpenSSL makes no strong guarantees about the
indistinguishability of valid and invalid logins. In particular,
computations are currently not carried out in constant time.

Reviewed-by: Rich Salz <rsalz@openssl.org>
CVE: CVE-2016-0798
CWE: CWE-399
Vulnerability description: Memory leak in the SRP_VBASE_get_by_user implementation in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g allows remote attackers to cause a denial of service (memory consumption) by providing an invalid username in a connection attempt, related to apps/s_server.c and crypto/srp/srp_vfy.c.

Project: openssl

static int ebcdic_new(BIO *bi)
{
    EBCDIC_OUTBUFF *wbuf;

    wbuf = app_malloc(sizeof(*wbuf) + 1024, "ebcdic wbuf");
    wbuf->alloced = 1024;
    wbuf->buff[0] = '\0';

    bi->ptr = (char *)wbuf;
    bi->init = 1;
    bi->flags = 0;
    return (1);
}

Project: openssl

static SRP_user_pwd *SRP_user_pwd_new(void)
{
    SRP_user_pwd *ret = OPENSSL_malloc(sizeof(*ret));
    if (ret == NULL)
        return NULL;
    ret->N = NULL;
    ret->g = NULL;
    ret->s = NULL;
    ret->v = NULL;
    ret->id = NULL;
    ret->info = NULL;
    return ret;
}

Project: openssl

static int rev_body(int s, int stype, 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 && !SSL_set_session_id_context(con, context,
                        strlen((char *)context))) {
        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);

    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_NETWARE)
                delay(1000);
#elif !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 */
    SSL_set_shutdown(con, SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN);

 err:

    OPENSSL_free(buf);
    BIO_free_all(io);
    return (ret);
}

Project: openssl

int s_server_main(int argc, char *argv[])
{
    ENGINE *e = 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;
    char *CApath = NULL, *CAfile = NULL, *chCApath = NULL, *chCAfile = NULL;
#ifndef OPENSSL_NO_DH
    char *dhfile = NULL;
#endif
    char *dpassarg = NULL, *dpass = NULL, *inrand = NULL;
    char *passarg = NULL, *pass = NULL, *vfyCApath = NULL, *vfyCAfile = NULL;
    char *crl_file = NULL, *prog;
#ifndef OPENSSL_NO_PSK
    char *p;
#endif
#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
    int no_dhe = 0;
#endif
    int nocert = 0, ret = 1;
    int noCApath = 0, noCAfile = 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;
    int state = 0, crl_format = FORMAT_PEM, crl_download = 0;
    char *host = NULL;
    char *port = BUF_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;
#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 */
    static char *psk_identity_hint = NULL;
#endif
#ifndef OPENSSL_NO_SRP
    char *srpuserseed = NULL;
    char *srp_verifier_file = NULL;
#endif

    local_argc = argc;
    local_argv = argv;

    s_server_init();
    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) {
        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 = BUF_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_depth = atoi(opt_arg());
            if (!s_quiet)
                BIO_printf(bio_err, "verify depth is %d\n", verify_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_depth = atoi(opt_arg());
            if (!s_quiet)
                BIO_printf(bio_err,
                           "verify depth is %d, must return a certificate\n",
                           verify_depth);
            break;
        case OPT_CONTEXT:
            context = (unsigned char *)opt_arg();
            break;
        case OPT_CERT:
            s_cert_file = opt_arg();
            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_PEMDER, &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_PEMDER, &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_PEMDER, &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_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:
            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_return_error = 1;
            break;
        case OPT_VERIFY_QUIET:
            verify_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:
            s_tlsextstatus = 1;
            break;
        case OPT_STATUS_VERBOSE:
            s_tlsextstatus = tlscstatp.verbose = 1;
            break;
        case OPT_STATUS_TIMEOUT:
            s_tlsextstatus = 1;
            tlscstatp.timeout = atoi(opt_arg());
            break;
        case OPT_STATUS_URL:
            s_tlsextstatus = 1;
            if (!OCSP_parse_url(opt_arg(),
                                &tlscstatp.host,
                                &tlscstatp.port,
                                &tlscstatp.path, &tlscstatp.use_ssl)) {
                BIO_printf(bio_err, "Error parsing URL\n");
                goto end;
            }
            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;
#else
            break;
#endif
        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_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_HINT:
#ifndef OPENSSL_NO_PSK
            psk_identity_hint = opt_arg();
#endif
            break;
        case OPT_PSK:
#ifndef OPENSSL_NO_PSK
            for (p = psk_key = opt_arg(); *p; p++) {
                if (isxdigit(_UC(*p)))
                    continue;
                BIO_printf(bio_err, "Not a hex number '%s'\n", *argv);
                goto end;
            }
#endif
            break;
        case OPT_SRPVFILE:
#ifndef OPENSSL_NO_SRP
            srp_verifier_file = opt_arg();
            meth = TLSv1_server_method();
#endif
            break;
        case OPT_SRPUSERSEED:
#ifndef OPENSSL_NO_SRP
            srpuserseed = opt_arg();
            meth = TLSv1_server_method();
#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:
#ifndef OPENSSL_NO_SSL3
            meth = SSLv3_server_method();
#endif
            break;
        case OPT_TLS1_2:
#ifndef OPENSSL_NO_TLS1_2
            meth = TLSv1_2_server_method();
#endif
            break;
        case OPT_TLS1_1:
#ifndef OPENSSL_NO_TLS1_1
            meth = TLSv1_1_server_method();
#endif
            break;
        case OPT_TLS1:
#ifndef OPENSSL_NO_TLS1
            meth = TLSv1_server_method();
#endif
            break;
        case OPT_DTLS:
#ifndef OPENSSL_NO_DTLS
            meth = DTLS_server_method();
            socket_type = SOCK_DGRAM;
#endif
            break;
        case OPT_DTLS1:
#ifndef OPENSSL_NO_DTLS1
            meth = DTLSv1_server_method();
            socket_type = SOCK_DGRAM;
#endif
            break;
        case OPT_DTLS1_2:
#ifndef OPENSSL_NO_DTLS1_2
            meth = DTLSv1_2_server_method();
            socket_type = SOCK_DGRAM;
#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_CHAIN:
#ifndef OPENSSL_NO_DTLS
            cert_chain = 1;
#endif
            break;
        case OPT_LISTEN:
#ifndef OPENSSL_NO_DTLS
            dtlslisten = 1;
#endif
            break;
        case OPT_ID_PREFIX:
            session_id_prefix = opt_arg();
            break;
        case OPT_ENGINE:
            e = setup_engine(opt_arg(), 1);
            break;
        case OPT_RAND:
            inrand = opt_arg();
            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:
            srtp_profiles = opt_arg();
            break;
        case OPT_KEYMATEXPORT:
            keymatexportlabel = opt_arg();
            break;
        case OPT_KEYMATEXPORTLEN:
            keymatexportlen = atoi(opt_arg());
            break;
        case OPT_ASYNC:
            async = 1;
            break;
        }
    }
    argc = opt_num_rest();
    argv = opt_rest();

#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

#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 (!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, e,
                         "server certificate private key file");
        if (!s_key) {
            ERR_print_errors(bio_err);
            goto end;
        }

        s_cert = load_cert(s_cert_file, s_cert_format,
                           "server certificate file");

        if (!s_cert) {
            ERR_print_errors(bio_err);
            goto end;
        }
        if (s_chain_file) {
            if (!load_certs(s_chain_file, &s_chain, FORMAT_PEM, NULL,
                            "server certificate chain"))
                goto end;
        }

        if (tlsextcbp.servername) {
            s_key2 = load_key(s_key_file2, s_key_format, 0, pass, e,
                              "second server certificate private key file");
            if (!s_key2) {
                ERR_print_errors(bio_err);
                goto end;
            }

            s_cert2 = load_cert(s_cert_file2, s_cert_format,
                                "second server certificate file");

            if (!s_cert2) {
                ERR_print_errors(bio_err);
                goto end;
            }
        }
    }
#if !defined(OPENSSL_NO_NEXTPROTONEG)
    if (next_proto_neg_in) {
        unsigned short len;
        next_proto.data = next_protos_parse(&len, next_proto_neg_in);
        if (next_proto.data == NULL)
            goto end;
        next_proto.len = len;
    } else {
        next_proto.data = NULL;
    }
#endif
    alpn_ctx.data = NULL;
    if (alpn_in) {
        unsigned short len;
        alpn_ctx.data = next_protos_parse(&len, alpn_in);
        if (alpn_ctx.data == NULL)
            goto end;
        alpn_ctx.len = len;
    }

    if (crl_file) {
        X509_CRL *crl;
        crl = load_crl(crl_file, crl_format);
        if (!crl) {
            BIO_puts(bio_err, "Error loading CRL\n");
            ERR_print_errors(bio_err);
            goto end;
        }
        crls = sk_X509_CRL_new_null();
        if (!crls || !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) {

        if (s_dkey_file == NULL)
            s_dkey_file = s_dcert_file;

        s_dkey = load_key(s_dkey_file, s_dkey_format,
                          0, dpass, e, "second certificate private key file");
        if (!s_dkey) {
            ERR_print_errors(bio_err);
            goto end;
        }

        s_dcert = load_cert(s_dcert_file, s_dcert_format,
                            "second server certificate file");

        if (!s_dcert) {
            ERR_print_errors(bio_err);
            goto end;
        }
        if (s_dchain_file) {
            if (!load_certs(s_dchain_file, &s_dchain, FORMAT_PEM, NULL,
                            "second server certificate chain"))
                goto end;
        }

    }

    if (!app_RAND_load_file(NULL, 1) && inrand == NULL
        && !RAND_status()) {
        BIO_printf(bio_err,
                   "warning, not much extra random data, consider using the -rand option\n");
    }
    if (inrand != NULL)
        BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
                   app_RAND_load_files(inrand));

    if (bio_s_out == NULL) {
        if (s_quiet && !s_debug) {
            bio_s_out = BIO_new(BIO_s_null());
            if (s_msg && !bio_s_msg)
                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;
    }
    if (sdebug)
        ssl_ctx_security_debug(ctx, sdebug);
    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;
        }
    }

    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);
    }
    SSL_CTX_set_quiet_shutdown(ctx, 1);
    if (exc)
        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);
    }

#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, CApath, noCAfile, noCApath)) {
        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 (!config_ctx(cctx, ssl_args, ctx))
        goto end;

    if (!ssl_load_stores(ctx, vfyCApath, vfyCAfile, chCApath, chCAfile,
                         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) {
        BIO_printf(bio_s_out, "Setting secondary ctx parameters\n");

        if (sdebug)
            ssl_ctx_security_debug(ctx, 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);
        }
        SSL_CTX_set_quiet_shutdown(ctx2, 1);
        if (exc)
            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 ((!SSL_CTX_load_verify_locations(ctx2, CAfile, CApath)) ||
            (!SSL_CTX_set_default_verify_paths(ctx2))) {
            ERR_print_errors(bio_err);
        }
        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)
            dh = load_dh_param(dhfile);
        else if (s_cert_file)
            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) {
            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 && !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)
            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 (!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

    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);

    if (ctx2) {
        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));
    }
    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);
        }
    }

    BIO_printf(bio_s_out, "ACCEPT\n");
    (void)BIO_flush(bio_s_out);
    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,
              server_cb, context, naccept);
    print_stats(bio_s_out, ctx);
    ret = 0;
 end:
    SSL_CTX_free(ctx);
    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);
    BIO_free(serverinfo_in);
#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);
    BIO_free(bio_s_out);
    bio_s_out = NULL;
    BIO_free(bio_s_msg);
    bio_s_msg = NULL;
    return (ret);
}

Project: openssl

char *SRP_create_verifier(const char *user, const char *pass, char **salt,
                          char **verifier, const char *N, const char *g)
{
    int len;
    char *result = NULL, *vf = NULL;
    BIGNUM *N_bn = NULL, *g_bn = NULL, *s = NULL, *v = NULL;
    unsigned char tmp[MAX_LEN];
    unsigned char tmp2[MAX_LEN];
    char *defgNid = NULL;
    int vfsize = 0;

    if ((user == NULL) ||
        (pass == NULL) || (salt == NULL) || (verifier == NULL))
        goto err;

    if (N) {
        if ((len = t_fromb64(tmp, N)) == 0)
            goto err;
        N_bn = BN_bin2bn(tmp, len, NULL);
        if ((len = t_fromb64(tmp, g)) == 0)
            goto err;
        g_bn = BN_bin2bn(tmp, len, NULL);
        defgNid = "*";
    } else {
        SRP_gN *gN = SRP_get_gN_by_id(g, NULL);
        if (gN == NULL)
            goto err;
        N_bn = gN->N;
        g_bn = gN->g;
        defgNid = gN->id;
    }

    if (*salt == NULL) {
        if (RAND_bytes(tmp2, SRP_RANDOM_SALT_LEN) <= 0)
            goto err;

        s = BN_bin2bn(tmp2, SRP_RANDOM_SALT_LEN, NULL);
    } else {
        if ((len = t_fromb64(tmp2, *salt)) == 0)
            goto err;
        s = BN_bin2bn(tmp2, len, NULL);
    }

    if (!SRP_create_verifier_BN(user, pass, &s, &v, N_bn, g_bn))
        goto err;

    BN_bn2bin(v, tmp);
    vfsize = BN_num_bytes(v) * 2;
    if (((vf = OPENSSL_malloc(vfsize)) == NULL))
        goto err;
    t_tob64(vf, tmp, BN_num_bytes(v));

    if (*salt == NULL) {
        char *tmp_salt;

        if ((tmp_salt = OPENSSL_malloc(SRP_RANDOM_SALT_LEN * 2)) == NULL) {
            goto err;
        }
        t_tob64(tmp_salt, tmp2, SRP_RANDOM_SALT_LEN);
        *salt = tmp_salt;
    }

    *verifier = vf;
    vf = NULL;
    result = defgNid;

 err:
    if (N) {
        BN_free(N_bn);
        BN_free(g_bn);
    }
    OPENSSL_clear_free(vf, vfsize);
    BN_clear_free(s);
    BN_clear_free(v);
    return result;
}

Project: openssl

SRP_user_pwd *SRP_VBASE_get1_by_user(SRP_VBASE *vb, char *username)
{
    SRP_user_pwd *user;
    unsigned char digv[SHA_DIGEST_LENGTH];
    unsigned char digs[SHA_DIGEST_LENGTH];
    EVP_MD_CTX *ctxt = NULL;

    if (vb == NULL)
        return NULL;

    if ((user = find_user(vb, username)) != NULL)
        return srp_user_pwd_dup(user);

    if ((vb->seed_key == NULL) ||
        (vb->default_g == NULL) || (vb->default_N == NULL))
        return NULL;

/* if the user is unknown we set parameters as well if we have a seed_key */

    if ((user = SRP_user_pwd_new()) == NULL)
        return NULL;

    SRP_user_pwd_set_gN(user, vb->default_g, vb->default_N);

    if (!SRP_user_pwd_set_ids(user, username, NULL))
        goto err;

    if (RAND_bytes(digv, SHA_DIGEST_LENGTH) <= 0)
        goto err;
    ctxt = EVP_MD_CTX_new();
    EVP_DigestInit_ex(ctxt, EVP_sha1(), NULL);
    EVP_DigestUpdate(ctxt, vb->seed_key, strlen(vb->seed_key));
    EVP_DigestUpdate(ctxt, username, strlen(username));
    EVP_DigestFinal_ex(ctxt, digs, NULL);
    EVP_MD_CTX_free(ctxt);
    ctxt = NULL;
    if (SRP_user_pwd_set_sv_BN(user,
                               BN_bin2bn(digs, SHA_DIGEST_LENGTH, NULL),
                               BN_bin2bn(digv, SHA_DIGEST_LENGTH, NULL)))
        return user;

 err:
    EVP_MD_CTX_free(ctxt);
    SRP_user_pwd_free(user);
    return NULL;
}

Project: openssl

SRP_VBASE *SRP_VBASE_new(char *seed_key)
{
    SRP_VBASE *vb = OPENSSL_malloc(sizeof(*vb));

    if (vb == NULL)
        return NULL;
    if ((vb->users_pwd = sk_SRP_user_pwd_new_null()) == NULL
        || (vb->gN_cache = sk_SRP_gN_cache_new_null()) == NULL) {
        OPENSSL_free(vb);
        return NULL;
    }
    vb->default_g = NULL;
    vb->default_N = NULL;
    vb->seed_key = NULL;
    if ((seed_key != NULL) && (vb->seed_key = OPENSSL_strdup(seed_key)) == NULL) {
        sk_SRP_user_pwd_free(vb->users_pwd);
        sk_SRP_gN_cache_free(vb->gN_cache);
        OPENSSL_free(vb);
        return NULL;
    }
    return vb;
}

Project: openssl

static SRP_user_pwd *srp_user_pwd_dup(SRP_user_pwd *src)
{
    SRP_user_pwd *ret;

    if (src == NULL)
        return NULL;
    if ((ret = SRP_user_pwd_new()) == NULL)
        return NULL;

    SRP_user_pwd_set_gN(ret, src->g, src->N);
    if (!SRP_user_pwd_set_ids(ret, src->id, src->info)
        || !SRP_user_pwd_set_sv_BN(ret, BN_dup(src->s), BN_dup(src->v))) {
            SRP_user_pwd_free(ret);
            return NULL;
    }
    return ret;
}

Project: openssl

static int sv_body(int s, int stype, 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) || defined(OPENSSL_SYS_NETWARE)
    struct timeval tv;
#else
    struct timeval *timeoutp;
#endif

    buf = app_malloc(bufsize, "server buffer");
#ifdef FIONBIO
    if (s_nbio) {
        unsigned long sl = 1;

        if (!s_quiet)
            BIO_printf(bio_err, "turning on non blocking io\n");
        if (BIO_socket_ioctl(s, FIONBIO, &sl) < 0)
            ERR_print_errors(bio_err);
    }
#endif

    if (con == NULL) {
        con = SSL_new(ctx);

        if (s_tlsextdebug) {
            SSL_set_tlsext_debug_callback(con, tlsext_cb);
            SSL_set_tlsext_debug_arg(con, bio_s_out);
        }

        if (context
                && !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 (stype == SOCK_DGRAM) {

        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);

        /* turn on cookie exchange */
        SSL_set_options(con, SSL_OP_COOKIE_EXCHANGE);
    } else
#endif
        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);
    /* 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);
    }

    width = s + 1;
    for (;;) {
        int read_from_terminal;
        int read_from_sslcon;

        read_from_terminal = 0;
        read_from_sslcon = SSL_pending(con)
                           || (async && SSL_waiting_for_async(con));

        if (!read_from_sslcon) {
            FD_ZERO(&readfds);
#if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE)
            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) || defined(OPENSSL_SYS_NETWARE)
            /*
             * 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.
             */
            tv.tv_sec = 1;
            tv.tv_usec = 0;
            i = select(width, (void *)&readfds, NULL, NULL, &tv);
            if ((i < 0) || (!i && !_kbhit()))
                continue;
            if (_kbhit())
                read_from_terminal = 1;
#else
            if ((SSL_version(con) == DTLS1_VERSION) &&
                DTLSv1_get_timeout(con, &timeout))
                timeoutp = &timeout;
            else
                timeoutp = NULL;

            i = select(width, (void *)&readfds, NULL, NULL, timeoutp);

            if ((SSL_version(con) == DTLS1_VERSION)
                && 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);
                    SHUTDOWN(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)
                        SHUTDOWN(s);
                    /*
                     * close_accept_socket(); ret= -11;
                     */
                    goto err;
                }
#ifndef OPENSSL_NO_HEARTBEATS
                if ((buf[0] == 'B') && ((buf[1] == '\n') || (buf[1] == '\r'))) {
                    BIO_printf(bio_err, "HEARTBEATING\n");
                    SSL_heartbeat(con);
                    i = 0;
                    continue;
                }
#endif
                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;
                    /*
                     * strcpy(buf,"server side RE-NEGOTIATE\n");
                     */
                }
                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;
                    /*
                     * strcpy(buf,"server side RE-NEGOTIATE asking for client
                     * cert\n");
                     */
                }
                if (buf[0] == 'P') {
                    static const char *str = "Lets print some clear text\n";
                    BIO_write(SSL_get_wbio(con), str, strlen(str));
                }
                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");
                    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");
                    break;
                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);
                    if (SSL_pending(con))
                        goto again;
                    break;
                case SSL_ERROR_WANT_ASYNC:
                    BIO_printf(bio_s_out, "Read BLOCK (Async)\n");
                    wait_for_async(con);
                    break;
                case SSL_ERROR_WANT_WRITE:
                case SSL_ERROR_WANT_READ:
                    BIO_printf(bio_s_out, "Read BLOCK\n");
                    break;
                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");
        SSL_set_shutdown(con, SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN);
        SSL_free(con);
    }
    BIO_printf(bio_s_out, "CONNECTION CLOSED\n");
    OPENSSL_clear_free(buf, bufsize);
    if (ret >= 0)
        BIO_printf(bio_s_out, "ACCEPT\n");
    (void)BIO_flush(bio_s_out);
    return (ret);
}

Project: openssl

static int cert_status_cb(SSL *s, void *arg)
{
    tlsextstatusctx *srctx = arg;
    char *host = NULL, *port = NULL, *path = NULL;
    int use_ssl;
    unsigned char *rspder = NULL;
    int rspderlen;
    STACK_OF(OPENSSL_STRING) *aia = NULL;
    X509 *x = NULL;
    X509_STORE_CTX inctx;
    X509_OBJECT obj;
    OCSP_REQUEST *req = NULL;
    OCSP_RESPONSE *resp = NULL;
    OCSP_CERTID *id = NULL;
    STACK_OF(X509_EXTENSION) *exts;
    int ret = SSL_TLSEXT_ERR_NOACK;
    int i;

    if (srctx->verbose)
        BIO_puts(bio_err, "cert_status: callback called\n");
    /* Build up OCSP query from server certificate */
    x = SSL_get_certificate(s);
    aia = X509_get1_ocsp(x);
    if (aia) {
        if (!OCSP_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) {
            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;
    }

    if (!X509_STORE_CTX_init(&inctx,
                             SSL_CTX_get_cert_store(SSL_get_SSL_CTX(s)),
                             NULL, NULL))
        goto err;
    if (X509_STORE_get_by_subject(&inctx, X509_LU_X509,
                                  X509_get_issuer_name(x), &obj) <= 0) {
        BIO_puts(bio_err, "cert_status: Can't retrieve issuer certificate.\n");
        X509_STORE_CTX_cleanup(&inctx);
        goto done;
    }
    req = OCSP_REQUEST_new();
    if (req == NULL)
        goto err;
    id = OCSP_cert_to_id(NULL, x, obj.data.x509);
    X509_free(obj.data.x509);
    X509_STORE_CTX_cleanup(&inctx);
    if (!id)
        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) {
        BIO_puts(bio_err, "cert_status: error querying responder\n");
        goto done;
    }
    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;
 done:
    if (ret != SSL_TLSEXT_ERR_OK)
        ERR_print_errors(bio_err);
    if (aia) {
        OPENSSL_free(host);
        OPENSSL_free(path);
        OPENSSL_free(port);
        X509_email_free(aia);
    }
    OCSP_CERTID_free(id);
    OCSP_REQUEST_free(req);
    OCSP_RESPONSE_free(resp);
    return ret;
 err:
    ret = SSL_TLSEXT_ERR_ALERT_FATAL;
    goto done;
}

Project: openssl

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);
}

Project: openssl

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;
}

Project: openssl

static BIGNUM *SRP_gN_place_bn(STACK_OF(SRP_gN_cache) *gN_cache, char *ch)
{
    int i;
    if (gN_cache == NULL)
        return NULL;

    /* search if we have already one... */
    for (i = 0; i < sk_SRP_gN_cache_num(gN_cache); i++) {
        SRP_gN_cache *cache = sk_SRP_gN_cache_value(gN_cache, i);
        if (strcmp(cache->b64_bn, ch) == 0)
            return cache->bn;
    }
    {                           /* it is the first time that we find it */
        SRP_gN_cache *newgN = SRP_gN_new_init(ch);
        if (newgN) {
            if (sk_SRP_gN_cache_insert(gN_cache, newgN, 0) > 0)
                return newgN->bn;
            SRP_gN_free(newgN);
        }
    }
    return NULL;
}

Project: openssl

int SRP_create_verifier_BN(const char *user, const char *pass, BIGNUM **salt,
                           BIGNUM **verifier, const BIGNUM *N,
                           const BIGNUM *g)
{
    int result = 0;
    BIGNUM *x = NULL;
    BN_CTX *bn_ctx = BN_CTX_new();
    unsigned char tmp2[MAX_LEN];
    BIGNUM *salttmp = NULL;

    if ((user == NULL) ||
        (pass == NULL) ||
        (salt == NULL) ||
        (verifier == NULL) || (N == NULL) || (g == NULL) || (bn_ctx == NULL))
        goto err;

    if (*salt == NULL) {
        if (RAND_bytes(tmp2, SRP_RANDOM_SALT_LEN) <= 0)
            goto err;

        salttmp = BN_bin2bn(tmp2, SRP_RANDOM_SALT_LEN, NULL);
    } else {
        salttmp = *salt;
    }

    x = SRP_Calc_x(salttmp, user, pass);

    *verifier = BN_new();
    if (*verifier == NULL)
        goto err;

    if (!BN_mod_exp(*verifier, g, x, N, bn_ctx)) {
        BN_clear_free(*verifier);
        goto err;
    }

    result = 1;
    *salt = salttmp;

 err:
    if (salt != NULL && *salt != salttmp)
        BN_clear_free(salttmp);
    BN_clear_free(x);
    BN_CTX_free(bn_ctx);
    return result;
}

Project: openssl

void SRP_VBASE_free(SRP_VBASE *vb)
{
    if (!vb)
        return;
    sk_SRP_user_pwd_pop_free(vb->users_pwd, SRP_user_pwd_free);
    sk_SRP_gN_cache_free(vb->gN_cache);
    OPENSSL_free(vb->seed_key);
    OPENSSL_free(vb);
}

Project: openssl

static int SRP_user_pwd_set_ids(SRP_user_pwd *vinfo, const char *id,
                                const char *info)
{
    if (id != NULL && NULL == (vinfo->id = OPENSSL_strdup(id)))
        return 0;
    return (info == NULL || NULL != (vinfo->info = OPENSSL_strdup(info)));
}

Project: openssl

static int generate_session_id(const SSL *ssl, unsigned char *id,
                               unsigned int *id_len)
{
    unsigned int count = 0;
    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,
               (strlen(session_id_prefix) < *id_len) ?
               strlen(session_id_prefix) : *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;
}

Project: openssl

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;
}

Project: openssl

static int ebcdic_write(BIO *b, const char *in, int inl)
{
    EBCDIC_OUTBUFF *wbuf;
    int ret = 0;
    int num;
    unsigned char n;

    if ((in == NULL) || (inl <= 0))
        return (0);
    if (b->next_bio == NULL)
        return (0);

    wbuf = (EBCDIC_OUTBUFF *) b->ptr;

    if (inl > (num = wbuf->alloced)) {
        num = num + num;        /* double the size */
        if (num < inl)
            num = inl;
        wbuf = app_malloc(sizeof(*wbuf) + num, "grow ebcdic wbuf");
        OPENSSL_free(b->ptr);

        wbuf->alloced = num;
        wbuf->buff[0] = '\0';

        b->ptr = (char *)wbuf;
    }

    ebcdic2ascii(wbuf->buff, in, inl);

    ret = BIO_write(b->next_bio, wbuf->buff, inl);

    return (ret);
}

Project: openssl

static SRP_user_pwd *find_user(SRP_VBASE *vb, char *username)
{
    int i;
    SRP_user_pwd *user;

    if (vb == NULL)
        return NULL;

    for (i = 0; i < sk_SRP_user_pwd_num(vb->users_pwd); i++) {
        user = sk_SRP_user_pwd_value(vb->users_pwd, i);
        if (strcmp(user->id, username) == 0)
            return user;
    }

    return NULL;
}

Project: openssl

static int www_body(int s, int stype, 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;

    /* 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;

#ifdef FIONBIO
    if (s_nbio) {
        unsigned long sl = 1;

        if (!s_quiet)
            BIO_printf(bio_err, "turning on non blocking io\n");
        if (BIO_socket_ioctl(s, FIONBIO, &sl) < 0)
            ERR_print_errors(bio_err);
    }
#endif

    /* 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 && !SSL_set_session_id_context(con, context,
                        strlen((char *)context)))
        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);

    /* SSL_set_fd(con,s); */
    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_NETWARE)
                delay(1000);
#elif !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;
            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 acutally 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_curves(io, con, 0);
#endif
            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);
            } else
                BIO_puts(io, "no client certificate available\n");
            BIO_puts(io, "</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;

                switch (dot) {
                case 1:
                    dot = (e[0] == '.') ? 2 : 0;
                    break;
                case 2:
                    dot = (e[0] == '.') ? 3 : 0;
                    break;
                case 3:
                    dot = (e[0] == '/') ? -1 : 0;
                    break;
                }
                if (dot == 0)
                    dot = (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 '..' reference\r\n", p);
                break;
            }

            if (*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;
            }

            if ((file = BIO_new_file(p, "r")) == NULL) {
                BIO_puts(io, text);
                BIO_printf(io, "Error opening '%s'\r\n", p);
                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 */
            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 */
    SSL_set_shutdown(con, SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN);

 err:
    if (ret >= 0)
        BIO_printf(bio_s_out, "ACCEPT\n");
    OPENSSL_free(buf);
    BIO_free_all(io);
    return (ret);
}

Project: openssl

void SRP_user_pwd_free(SRP_user_pwd *user_pwd)
{
    if (user_pwd == NULL)
        return;
    BN_free(user_pwd->s);
    BN_clear_free(user_pwd->v);
    OPENSSL_free(user_pwd->id);
    OPENSSL_free(user_pwd->info);
    OPENSSL_free(user_pwd);
}

Project: openssl

static void s_server_init(void)
{
    accept_socket = -1;
    verify_depth = 0;
    s_server_verify = SSL_VERIFY_NONE;
    s_dcert_file = NULL;
    s_dkey_file = NULL;
    s_dchain_file = NULL;
    s_cert_file = TEST_CERT;
    s_key_file = NULL;
    s_chain_file = NULL;
    s_cert_file2 = TEST_CERT2;
    s_key_file2 = NULL;
    ctx2 = NULL;
    s_nbio = 0;
    s_nbio_test = 0;
    ctx = NULL;
    www = 0;
    bio_s_out = NULL;
    s_debug = 0;
    s_msg = 0;
    s_quiet = 0;
    s_brief = 0;
    async = 0;
#ifndef OPENSSL_NO_ENGINE
    engine_id = NULL;
#endif
}

Project: openssl

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;
}

Project: openssl

int SRP_VBASE_init(SRP_VBASE *vb, char *verifier_file)
{
    int error_code;
    STACK_OF(SRP_gN) *SRP_gN_tab = sk_SRP_gN_new_null();
    char *last_index = NULL;
    int i;
    char **pp;

    SRP_gN *gN = NULL;
    SRP_user_pwd *user_pwd = NULL;

    TXT_DB *tmpdb = NULL;
    BIO *in = BIO_new(BIO_s_file());

    error_code = SRP_ERR_OPEN_FILE;

    if (in == NULL || BIO_read_filename(in, verifier_file) <= 0)
        goto err;

    error_code = SRP_ERR_VBASE_INCOMPLETE_FILE;

    if ((tmpdb = TXT_DB_read(in, DB_NUMBER)) == NULL)
        goto err;

    error_code = SRP_ERR_MEMORY;

    if (vb->seed_key) {
        last_index = SRP_get_default_gN(NULL)->id;
    }
    for (i = 0; i < sk_OPENSSL_PSTRING_num(tmpdb->data); i++) {
        pp = sk_OPENSSL_PSTRING_value(tmpdb->data, i);
        if (pp[DB_srptype][0] == DB_SRP_INDEX) {
            /*
             * we add this couple in the internal Stack
             */

            if ((gN = OPENSSL_malloc(sizeof(*gN))) == NULL)
                goto err;

            if ((gN->id = OPENSSL_strdup(pp[DB_srpid])) == NULL
                || (gN->N = SRP_gN_place_bn(vb->gN_cache, pp[DB_srpverifier]))
                        == NULL
                || (gN->g = SRP_gN_place_bn(vb->gN_cache, pp[DB_srpsalt]))
                        == NULL
                || sk_SRP_gN_insert(SRP_gN_tab, gN, 0) == 0)
                goto err;

            gN = NULL;

            if (vb->seed_key != NULL) {
                last_index = pp[DB_srpid];
            }
        } else if (pp[DB_srptype][0] == DB_SRP_VALID) {
            /* it is a user .... */
            const SRP_gN *lgN;

            if ((lgN = SRP_get_gN_by_id(pp[DB_srpgN], SRP_gN_tab)) != NULL) {
                error_code = SRP_ERR_MEMORY;
                if ((user_pwd = SRP_user_pwd_new()) == NULL)
                    goto err;

                SRP_user_pwd_set_gN(user_pwd, lgN->g, lgN->N);
                if (!SRP_user_pwd_set_ids
                    (user_pwd, pp[DB_srpid], pp[DB_srpinfo]))
                    goto err;

                error_code = SRP_ERR_VBASE_BN_LIB;
                if (!SRP_user_pwd_set_sv
                    (user_pwd, pp[DB_srpsalt], pp[DB_srpverifier]))
                    goto err;

                if (sk_SRP_user_pwd_insert(vb->users_pwd, user_pwd, 0) == 0)
                    goto err;
                user_pwd = NULL; /* abandon responsability */
            }
        }
    }

    if (last_index != NULL) {
        /* this means that we want to simulate a default user */

        if (((gN = SRP_get_gN_by_id(last_index, SRP_gN_tab)) == NULL)) {
            error_code = SRP_ERR_VBASE_BN_LIB;
            goto err;
        }
        vb->default_g = gN->g;
        vb->default_N = gN->N;
        gN = NULL;
    }
    error_code = SRP_NO_ERROR;

 err:
    /*
     * there may be still some leaks to fix, if this fails, the application
     * terminates most likely
     */

    if (gN != NULL) {
        OPENSSL_free(gN->id);
        OPENSSL_free(gN);
    }

    SRP_user_pwd_free(user_pwd);

    TXT_DB_free(tmpdb);
    BIO_free_all(in);

    sk_SRP_gN_free(SRP_gN_tab);

    return error_code;

}

Project: openssl

static int not_resumable_sess_cb(SSL *s, int is_forward_secure)
{
    /* disable resumption for sessions with forward secure ciphers */
    return is_forward_secure;
}

Project: openssl

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 && p->biodebug)
        BIO_printf(p->biodebug, "Hostname in TLS extension: \"%s\"\n",
                   servername);

    if (!p->servername)
        return SSL_TLSEXT_ERR_NOACK;

    if (servername) {
        if (strcasecmp(servername, p->servername))
            return p->extension_error;
        if (ctx2) {
            BIO_printf(p->biodebug, "Switching server context.\n");
            SSL_set_SSL_CTX(s, ctx2);
        }
    }
    return SSL_TLSEXT_ERR_OK;
}

Project: openssl

static int init_ssl_connection(SSL *con)
{
    int i;
    const char *str;
    X509 *peer;
    long verify_err;
    char buf[BUFSIZ];
#if !defined(OPENSSL_NO_NEXTPROTONEG)
    const unsigned char *next_proto_neg;
    unsigned next_proto_neg_len;
#endif
    unsigned char *exportedkeymat;

#ifndef OPENSSL_NO_DTLS
    if(dtlslisten) {
        BIO_ADDR *client = NULL;

        if ((client = BIO_ADDR_new()) == NULL) {
            BIO_printf(bio_err, "ERROR - memory\n");
            return 0;
        }
        i = DTLSv1_listen(con, client);
        if (i > 0) {
            BIO *wbio;
            int fd = -1;

            wbio = SSL_get_wbio(con);
            if(wbio) {
                BIO_get_fd(wbio, &fd);
            }

            if(!wbio || BIO_connect(fd, client, 0) == 0) {
                BIO_printf(bio_err, "ERROR - unable to connect\n");
                BIO_ADDR_free(client);
                return 0;
            }
            BIO_ADDR_free(client);
            dtlslisten = 0;
            i = SSL_accept(con);
        }
    } else
#endif

    do {
        i = SSL_accept(con);

#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);
            }
        }
#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);
        }
#endif
    } while (i < 0 && SSL_waiting_for_async(con));

    if (i <= 0) {
        if ((dtlslisten && i == 0)
                || (!dtlslisten && BIO_sock_should_retry(i))) {
            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);
    }

    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);
        X509_NAME_oneline(X509_get_subject_name(peer), buf, sizeof buf);
        BIO_printf(bio_s_out, "subject=%s\n", buf);
        X509_NAME_oneline(X509_get_issuer_name(peer), buf, sizeof buf);
        BIO_printf(bio_s_out, "issuer=%s\n", buf);
        X509_free(peer);
    }

    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_curves(bio_s_out, con, 0);
#endif
    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 (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);
    }

    return (1);
}

Project: openssl

static int ebcdic_free(BIO *a)
{
    if (a == NULL)
        return (0);
    OPENSSL_free(a->ptr);
    a->ptr = NULL;
    a->init = 0;
    a->flags = 0;
    return (1);
}

Project: openssl

SRP_user_pwd *SRP_VBASE_get_by_user(SRP_VBASE *vb, char *username)
{
    return find_user(vb, username);
}

Project: openssl

static unsigned int psk_server_cb(SSL *ssl, const char *identity,
                                  unsigned char *psk,
                                  unsigned int max_psk_len)
{
    unsigned int psk_len = 0;
    int ret;
    BIGNUM *bn = NULL;

    if (s_debug)
        BIO_printf(bio_s_out, "psk_server_cb\n");
    if (!identity) {
        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 error: client identity not found"
                   " (got '%s' expected '%s')\n", identity, psk_identity);
        goto out_err;
    }
    if (s_debug)
        BIO_printf(bio_s_out, "PSK client identity found\n");

    /* convert the PSK key to binary */
    ret = BN_hex2bn(&bn, psk_key);
    if (!ret) {
        BIO_printf(bio_err, "Could not convert PSK key '%s' to BIGNUM\n",
                   psk_key);
        BN_free(bn);
        return 0;
    }
    if (BN_num_bytes(bn) > (int)max_psk_len) {
        BIO_printf(bio_err,
                   "psk buffer of callback is too small (%d) for key (%d)\n",
                   max_psk_len, BN_num_bytes(bn));
        BN_free(bn);
        return 0;
    }

    ret = BN_bn2bin(bn, psk);
    BN_free(bn);

    if (ret < 0)
        goto out_err;
    psk_len = (unsigned int)ret;

    if (s_debug)
        BIO_printf(bio_s_out, "fetched PSK len=%d\n", psk_len);
    return psk_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;
}

Project: openssl

static SRP_gN_cache *SRP_gN_new_init(const char *ch)
{
    unsigned char tmp[MAX_LEN];
    int len;
    SRP_gN_cache *newgN = OPENSSL_malloc(sizeof(*newgN));

    if (newgN == NULL)
        return NULL;

    if ((newgN->b64_bn = OPENSSL_strdup(ch)) == NULL)
        goto err;

    len = t_fromb64(tmp, ch);
    if ((newgN->bn = BN_bin2bn(tmp, len, NULL)))
        return newgN;

    OPENSSL_free(newgN->b64_bn);
 err:
    OPENSSL_free(newgN);
    return NULL;
}