/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ /* ==================================================================== * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. All advertising materials mentioning features or use of this * software must display the following acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" * * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to * endorse or promote products derived from this software without * prior written permission. For written permission, please contact * openssl-core@openssl.org. * * 5. Products derived from this software may not be called "OpenSSL" * nor may "OpenSSL" appear in their names without prior written * permission of the OpenSSL Project. * * 6. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit (http://www.openssl.org/)" * * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * This product includes cryptographic software written by Eric Young * (eay@cryptsoft.com). This product includes software written by Tim * Hudson (tjh@cryptsoft.com). * */ /* ==================================================================== * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. * ECC cipher suite support in OpenSSL originally developed by * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. */ /* ==================================================================== * Copyright 2005 Nokia. All rights reserved. * * The portions of the attached software ("Contribution") is developed by * Nokia Corporation and is licensed pursuant to the OpenSSL open source * license. * * The Contribution, originally written by Mika Kousa and Pasi Eronen of * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites * support (see RFC 4279) to OpenSSL. * * No patent licenses or other rights except those expressly stated in * the OpenSSL open source license shall be deemed granted or received * expressly, by implication, estoppel, or otherwise. * * No assurances are provided by Nokia that the Contribution does not * infringe the patent or other intellectual property rights of any third * party or that the license provides you with all the necessary rights * to make use of the Contribution. * * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR * OTHERWISE. */ #include #include #include #include #include /* conflicts with winsock2 stuff on netware */ #if !defined(OPENSSL_SYS_NETWARE) # include #endif /* * With IPv6, it looks like Digital has mixed up the proper order of * recursive header file inclusion, resulting in the compiler complaining * that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which is * needed to have fileno() declared correctly... So let's define u_int */ #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT) # define __U_INT typedef unsigned int u_int; #endif #include #include #define USE_SOCKETS #include "apps.h" #include #include #include #include #include #include #ifndef OPENSSL_NO_DH # include #endif #ifndef OPENSSL_NO_RSA # include #endif #ifndef OPENSSL_NO_SRP # include #endif #include "s_apps.h" #include "timeouts.h" #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000) /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */ # undef FIONBIO #endif #ifndef OPENSSL_NO_RSA static RSA *tmp_rsa_cb(SSL *s, int is_export, int keylength); #endif static int not_resumable_sess_cb(SSL *s, int is_forward_secure); static int sv_body(char *hostname, int s, int stype, unsigned char *context); static int www_body(char *hostname, int s, int stype, unsigned char *context); static int rev_body(char *hostname, int s, int stype, unsigned char *context); static void close_accept_socket(void); static int init_ssl_connection(SSL *s); static void print_stats(BIO *bp, SSL_CTX *ctx); static int generate_session_id(const SSL *ssl, unsigned char *id, unsigned int *id_len); static void init_session_cache_ctx(SSL_CTX *sctx); static void free_sessions(void); #ifndef OPENSSL_NO_DH static DH *load_dh_param(const char *dhfile); #endif static void s_server_init(void); /* static int load_CA(SSL_CTX *ctx, char *file);*/ #undef BUFSIZZ #define BUFSIZZ 16*1024 static int bufsize = BUFSIZZ; static int accept_socket = -1; #define TEST_CERT "server.pem" #define TEST_CERT2 "server2.pem" extern int verify_depth, verify_return_error, verify_quiet; static int s_server_verify = SSL_VERIFY_NONE; static int s_server_session_id_context = 1; /* anything will do */ static const char *s_cert_file = TEST_CERT, *s_key_file = NULL, *s_chain_file = NULL; static const char *s_cert_file2 = TEST_CERT2, *s_key_file2 = NULL; static char *s_dcert_file = NULL, *s_dkey_file = NULL, *s_dchain_file = NULL; #ifdef FIONBIO static int s_nbio = 0; #endif static int s_nbio_test = 0; static int s_crlf = 0; static SSL_CTX *ctx = NULL; static SSL_CTX *ctx2 = NULL; static int www = 0; static BIO *bio_s_out = NULL; static BIO *bio_s_msg = NULL; static int s_debug = 0; static int s_tlsextdebug = 0; static int s_tlsextstatus = 0; static int cert_status_cb(SSL *s, void *arg); static int no_resume_ephemeral = 0; static int s_msg = 0; static int s_quiet = 0; static int s_ign_eof = 0; static int s_brief = 0; static char *keymatexportlabel = NULL; static int keymatexportlen = 20; #ifndef OPENSSL_NO_ENGINE static char *engine_id = NULL; #endif static const char *session_id_prefix = NULL; static int enable_timeouts = 0; static long socket_mtu; #ifndef OPENSSL_NO_DTLS1 static int cert_chain = 0; #endif static BIO *serverinfo_in = NULL; static const char *s_serverinfo_file = NULL; #ifndef OPENSSL_NO_PSK static char *psk_identity = "Client_identity"; char *psk_key = NULL; /* by default PSK is not used */ 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; } #endif #ifndef OPENSSL_NO_SRP /* This is a context that we pass to callbacks */ typedef struct srpsrvparm_st { char *login; SRP_VBASE *vb; SRP_user_pwd *user; } srpsrvparm; /* * This callback pretends to require some asynchronous logic in order to * obtain a verifier. When the callback is called for a new connection we * return with a negative value. This will provoke the accept etc to return * with an LOOKUP_X509. The main logic of the reinvokes the suspended call * (which would normally occur after a worker has finished) and we set the * user parameters. */ static int ssl_srp_server_param_cb(SSL *s, int *ad, void *arg) { srpsrvparm *p = (srpsrvparm *) arg; 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); return SSL3_AL_FATAL; } 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; return SSL3_AL_FATAL; } BIO_printf(bio_err, "SRP parameters set: username = \"%s\" info=\"%s\" \n", p->login, p->user->info); /* need to check whether there are memory leaks */ p->user = NULL; p->login = NULL; return SSL_ERROR_NONE; } #endif 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; #ifndef OPENSSL_NO_ENGINE engine_id = NULL; #endif } static int local_argc = 0; static char **local_argv; #ifdef CHARSET_EBCDIC static int ebcdic_new(BIO *bi); static int ebcdic_free(BIO *a); static int ebcdic_read(BIO *b, char *out, int outl); static int ebcdic_write(BIO *b, const char *in, int inl); static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr); static int ebcdic_gets(BIO *bp, char *buf, int size); static int ebcdic_puts(BIO *bp, const char *str); # define BIO_TYPE_EBCDIC_FILTER (18|0x0200) static BIO_METHOD methods_ebcdic = { BIO_TYPE_EBCDIC_FILTER, "EBCDIC/ASCII filter", ebcdic_write, ebcdic_read, ebcdic_puts, ebcdic_gets, ebcdic_ctrl, ebcdic_new, ebcdic_free, }; /* This struct is "unwarranted chumminess with the compiler." */ typedef struct { size_t alloced; char buff[1]; } EBCDIC_OUTBUFF; BIO_METHOD *BIO_f_ebcdic_filter() { return (&methods_ebcdic); } static int ebcdic_new(BIO *bi) { EBCDIC_OUTBUFF *wbuf; wbuf = app_malloc(sizeof(*wbuf) + 1024, "ebcdic wbuf"); wbuf->alloced = 1024; wbuf->buff[0] = '\0'; bi->ptr = (char *)wbuf; bi->init = 1; bi->flags = 0; return (1); } 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); } static int ebcdic_read(BIO *b, char *out, int outl) { int ret = 0; if (out == NULL || outl == 0) return (0); if (b->next_bio == NULL) return (0); ret = BIO_read(b->next_bio, out, outl); if (ret > 0) ascii2ebcdic(out, out, ret); return (ret); } static int ebcdic_write(BIO *b, const char *in, int inl) { EBCDIC_OUTBUFF *wbuf; 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); } static long ebcdic_ctrl(BIO *b, int cmd, long num, void *ptr) { long ret; if (b->next_bio == NULL) return (0); switch (cmd) { case BIO_CTRL_DUP: ret = 0L; break; default: ret = BIO_ctrl(b->next_bio, cmd, num, ptr); break; } return (ret); } static int ebcdic_gets(BIO *bp, char *buf, int size) { int i, ret = 0; if (bp->next_bio == NULL) return (0); /* return(BIO_gets(bp->next_bio,buf,size));*/ for (i = 0; i < size - 1; ++i) { ret = ebcdic_read(bp, &buf[i], 1); if (ret <= 0) break; else if (buf[i] == '\n') { ++i; break; } } if (i < size) buf[i] = '\0'; return (ret < 0 && i == 0) ? ret : i; } static int ebcdic_puts(BIO *bp, const char *str) { if (bp->next_bio == NULL) return (0); return ebcdic_write(bp, str, strlen(str)); } #endif /* This is a context that we pass to callbacks */ typedef struct tlsextctx_st { char *servername; BIO *biodebug; int extension_error; } tlsextctx; static int ssl_servername_cb(SSL *s, int *ad, void *arg) { tlsextctx *p = (tlsextctx *) arg; const char *servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name); if (servername && 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; } /* Structure passed to cert status callback */ typedef struct tlsextstatusctx_st { /* Default responder to use */ char *host, *path, *port; int use_ssl; int timeout; int verbose; } tlsextstatusctx; static tlsextstatusctx tlscstatp = { NULL, NULL, NULL, 0, -1, 0 }; /* * Certificate Status callback. This is called when a client includes a * certificate status request extension. This is a simplified version. It * examines certificates each time and makes one OCSP responder query for * each request. A full version would store details such as the OCSP * certificate IDs and minimise the number of OCSP responses by caching them * until they were considered "expired". */ static int 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) 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; } #ifndef OPENSSL_NO_NEXTPROTONEG /* This is the context that we pass to next_proto_cb */ typedef struct tlsextnextprotoctx_st { unsigned char *data; unsigned int len; } tlsextnextprotoctx; static int next_proto_cb(SSL *s, const unsigned char **data, unsigned int *len, void *arg) { tlsextnextprotoctx *next_proto = arg; *data = next_proto->data; *len = next_proto->len; return SSL_TLSEXT_ERR_OK; } #endif /* ndef OPENSSL_NO_NEXTPROTONEG */ /* This the context that we pass to alpn_cb */ typedef struct tlsextalpnctx_st { unsigned char *data; unsigned short len; } tlsextalpnctx; static int alpn_cb(SSL *s, const unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg) { tlsextalpnctx *alpn_ctx = arg; if (!s_quiet) { /* We can assume that |in| is syntactically valid. */ unsigned i; BIO_printf(bio_s_out, "ALPN protocols advertised by the client: "); for (i = 0; i < inlen;) { if (i) BIO_write(bio_s_out, ", ", 2); BIO_write(bio_s_out, &in[i + 1], in[i]); i += in[i] + 1; } BIO_write(bio_s_out, "\n", 1); } if (SSL_select_next_proto ((unsigned char **)out, outlen, alpn_ctx->data, alpn_ctx->len, in, inlen) != OPENSSL_NPN_NEGOTIATED) { return SSL_TLSEXT_ERR_NOACK; } if (!s_quiet) { BIO_printf(bio_s_out, "ALPN protocols selected: "); BIO_write(bio_s_out, *out, *outlen); BIO_write(bio_s_out, "\n", 1); } return SSL_TLSEXT_ERR_OK; } static int not_resumable_sess_cb(SSL *s, int is_forward_secure) { /* disable resumption for sessions with forward secure ciphers */ return is_forward_secure; } static char *jpake_secret = NULL; #ifndef OPENSSL_NO_SRP static srpsrvparm srp_callback_parm; #endif #ifndef OPENSSL_NO_SRTP static char *srtp_profiles = NULL; #endif typedef enum OPTION_choice { OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, OPT_ENGINE, OPT_PORT, OPT_UNIX, OPT_UNLINK, OPT_NACCEPT, OPT_VERIFY, OPT_UPPER_V_VERIFY, OPT_CONTEXT, OPT_CERT, OPT_CRL, OPT_CRL_DOWNLOAD, OPT_SERVERINFO, OPT_CERTFORM, OPT_KEY, OPT_KEYFORM, OPT_PASS, OPT_CERT_CHAIN, OPT_DHPARAM, OPT_DCERTFORM, OPT_DCERT, OPT_DKEYFORM, OPT_DPASS, OPT_DKEY, OPT_DCERT_CHAIN, OPT_NOCERT, OPT_CAPATH, OPT_CHAINCAPATH, OPT_VERIFYCAPATH, OPT_NO_CACHE, OPT_EXT_CACHE, OPT_CRLFORM, OPT_VERIFY_RET_ERROR, OPT_VERIFY_QUIET, OPT_BUILD_CHAIN, OPT_CAFILE, OPT_CHAINCAFILE, OPT_VERIFYCAFILE, OPT_NBIO, OPT_NBIO_TEST, OPT_IGN_EOF, OPT_NO_IGN_EOF, OPT_DEBUG, OPT_TLSEXTDEBUG, OPT_STATUS, OPT_STATUS_VERBOSE, OPT_STATUS_TIMEOUT, OPT_STATUS_URL, OPT_MSG, OPT_MSGFILE, OPT_TRACE, OPT_SECURITY_DEBUG, OPT_SECURITY_DEBUG_VERBOSE, OPT_STATE, OPT_CRLF, OPT_QUIET, OPT_BRIEF, OPT_NO_TMP_RSA, OPT_NO_DHE, OPT_NO_ECDHE, OPT_NO_RESUME_EPHEMERAL, OPT_PSK_HINT, OPT_PSK, OPT_SRPVFILE, OPT_SRPUSERSEED, OPT_REV, OPT_WWW, OPT_UPPER_WWW, OPT_HTTP, OPT_SSL3, OPT_TLS1_2, OPT_TLS1_1, OPT_TLS1, OPT_DTLS, OPT_DTLS1, OPT_DTLS1_2, OPT_TIMEOUT, OPT_MTU, OPT_CHAIN, OPT_ID_PREFIX, OPT_RAND, OPT_SERVERNAME, OPT_SERVERNAME_FATAL, OPT_CERT2, OPT_KEY2, OPT_NEXTPROTONEG, OPT_ALPN, OPT_JPAKE, OPT_SRTP_PROFILES, OPT_KEYMATEXPORT, OPT_KEYMATEXPORTLEN, OPT_S_ENUM, OPT_V_ENUM, OPT_X_ENUM } OPTION_CHOICE; OPTIONS s_server_options[] = { {"help", OPT_HELP, '-', "Display this summary"}, {"port", OPT_PORT, 'p'}, {"accept", OPT_PORT, 'p', "TCP/IP port to accept on (default is " PORT_STR ")"}, {"unix", OPT_UNIX, 's', "Unix domain socket to accept on"}, {"unlink", OPT_UNLINK, '-', "For -unix, unlink existing socket first"}, {"context", OPT_CONTEXT, 's', "Set session ID context"}, {"verify", OPT_VERIFY, 'n', "Turn on peer certificate verification"}, {"Verify", OPT_UPPER_V_VERIFY, 'n', "Turn on peer certificate verification, must have a cert"}, {"cert", OPT_CERT, '<', "Certificate file to use; default is " TEST_CERT}, {"naccept", OPT_NACCEPT, 'p', "Terminate after pnum connections"}, {"serverinfo", OPT_SERVERINFO, 's', "PEM serverinfo file for certificate"}, {"certform", OPT_CERTFORM, 'F', "Certificate format (PEM or DER) PEM default"}, {"key", OPT_KEY, '<', "Private Key if not in -cert; default is " TEST_CERT}, {"keyform", OPT_KEYFORM, 'f', "Key format (PEM, DER or ENGINE) PEM default"}, {"pass", OPT_PASS, 's', "Private key file pass phrase source"}, {"dcert", OPT_DCERT, '<', "Second certificate file to use (usually for DSA)"}, {"dcertform", OPT_DCERTFORM, 'F', "Second certificate format (PEM or DER) PEM default"}, {"dkey", OPT_DKEY, '<', "Second private key file to use (usually for DSA)"}, {"dkeyform", OPT_DKEYFORM, 'F', "Second key format (PEM, DER or ENGINE) PEM default"}, {"dpass", OPT_DPASS, 's', "Second private key file pass phrase source"}, {"nbio_test", OPT_NBIO_TEST, '-', "Test with the non-blocking test bio"}, {"crlf", OPT_CRLF, '-', "Convert LF from terminal into CRLF"}, {"debug", OPT_DEBUG, '-', "Print more output"}, {"msg", OPT_MSG, '-', "Show protocol messages"}, {"msgfile", OPT_MSGFILE, '>'}, {"state", OPT_STATE, '-', "Print the SSL states"}, {"CApath", OPT_CAPATH, '/', "PEM format directory of CA's"}, {"CAfile", OPT_CAFILE, '<', "PEM format file of CA's"}, {"nocert", OPT_NOCERT, '-', "Don't use any certificates (Anon-DH)"}, {"quiet", OPT_QUIET, '-', "No server output"}, {"no_tmp_rsa", OPT_NO_TMP_RSA, '-', "Do not generate a tmp RSA key"}, {"tls1_2", OPT_TLS1_2, '-', "just talk TLSv1.2"}, {"tls1_1", OPT_TLS1_1, '-', "Just talk TLSv1.1"}, {"tls1", OPT_TLS1, '-', "Just talk TLSv1"}, {"no_resume_ephemeral", OPT_NO_RESUME_EPHEMERAL, '-', "Disable caching and tickets if ephemeral (EC)DH is used"}, {"www", OPT_WWW, '-', "Respond to a 'GET /' with a status page"}, {"WWW", OPT_UPPER_WWW, '-', "Respond to a 'GET with the file ./path"}, {"servername", OPT_SERVERNAME, 's', "Servername for HostName TLS extension"}, {"servername_fatal", OPT_SERVERNAME_FATAL, '-', "mismatch send fatal alert (default warning alert)"}, {"cert2", OPT_CERT2, '<', "Certificate file to use for servername; default is" TEST_CERT2}, {"key2", OPT_KEY2, '<', "-Private Key file to use for servername if not in -cert2"}, {"tlsextdebug", OPT_TLSEXTDEBUG, '-', "Hex dump of all TLS extensions received"}, {"HTTP", OPT_HTTP, '-', "Like -WWW but ./path incluedes HTTP headers"}, {"id_prefix", OPT_ID_PREFIX, 's', "Generate SSL/TLS session IDs prefixed by arg"}, {"rand", OPT_RAND, 's', "Load the file(s) into the random number generator"}, {"keymatexport", OPT_KEYMATEXPORT, 's', "Export keying material using label"}, {"keymatexportlen", OPT_KEYMATEXPORTLEN, 'p', "Export len bytes of keying material (default 20)"}, {"CRL", OPT_CRL, '<'}, {"crl_download", OPT_CRL_DOWNLOAD, '-'}, {"cert_chain", OPT_CERT_CHAIN, '<'}, {"dcert_chain", OPT_DCERT_CHAIN, '<'}, {"chainCApath", OPT_CHAINCAPATH, '/'}, {"verifyCApath", OPT_VERIFYCAPATH, '/'}, {"no_cache", OPT_NO_CACHE, '-'}, {"ext_cache", OPT_EXT_CACHE, '-'}, {"CRLform", OPT_CRLFORM, 'F'}, {"verify_return_error", OPT_VERIFY_RET_ERROR, '-'}, {"verify_quiet", OPT_VERIFY_QUIET, '-'}, {"build_chain", OPT_BUILD_CHAIN, '-'}, {"chainCAfile", OPT_CHAINCAFILE, '<'}, {"verifyCAfile", OPT_VERIFYCAFILE, '<'}, {"ign_eof", OPT_IGN_EOF, '-'}, {"no_ign_eof", OPT_NO_IGN_EOF, '-'}, {"status", OPT_STATUS, '-'}, {"status_verbose", OPT_STATUS_VERBOSE, '-'}, {"status_timeout", OPT_STATUS_TIMEOUT, 'n'}, {"status_url", OPT_STATUS_URL, 's'}, {"trace", OPT_TRACE, '-'}, {"security_debug", OPT_SECURITY_DEBUG, '-'}, {"security_debug_verbose", OPT_SECURITY_DEBUG_VERBOSE, '-'}, {"brief", OPT_BRIEF, '-'}, {"rev", OPT_REV, '-'}, OPT_S_OPTIONS, OPT_V_OPTIONS, OPT_X_OPTIONS, #ifdef FIONBIO {"nbio", OPT_NBIO, '-', "Use non-blocking IO"}, #endif #ifndef OPENSSL_NO_PSK {"psk_hint", OPT_PSK_HINT, 's', "PSK identity hint to use"}, {"psk", OPT_PSK, 's', "PSK in hex (without 0x)"}, # ifndef OPENSSL_NO_JPAKE {"jpake", OPT_JPAKE, 's', "JPAKE secret to use"}, # endif #endif #ifndef OPENSSL_NO_SRP {"srpvfile", OPT_SRPVFILE, '<', "The verifier file for SRP"}, {"srpuserseed", OPT_SRPUSERSEED, 's', "A seed string for a default user salt"}, #endif #ifndef OPENSSL_NO_SSL3 {"ssl3", OPT_SSL3, '-', "Just talk SSLv3"}, #endif #ifndef OPENSSL_NO_DTLS1 {"dtls", OPT_DTLS, '-'}, {"dtls1", OPT_DTLS1, '-', "Just talk DTLSv1"}, {"dtls1_2", OPT_DTLS1_2, '-', "Just talk DTLSv1.2"}, {"timeout", OPT_TIMEOUT, '-', "Enable timeouts"}, {"mtu", OPT_MTU, 'p', "Set link layer MTU"}, {"chain", OPT_CHAIN, '-', "Read a certificate chain"}, #endif #ifndef OPENSSL_NO_DH {"no_dhe", OPT_NO_DHE, '-', "Disable ephemeral DH"}, #endif #ifndef OPENSSL_NO_EC {"no_ecdhe", OPT_NO_ECDHE, '-', "Disable ephemeral ECDH"}, #endif #ifndef OPENSSL_NO_NEXTPROTONEG {"nextprotoneg", OPT_NEXTPROTONEG, 's', "Set the advertised protocols for the NPN extension (comma-separated list)"}, #endif #ifndef OPENSSL_NO_SRTP {"use_srtp", OPT_SRTP_PROFILES, 's', "Offer SRTP key management with a colon-separated profile list"}, {"alpn", OPT_ALPN, 's', "Set the advertised protocols for the ALPN extension (comma-separated list)"}, #endif #ifndef OPENSSL_NO_ENGINE {"engine", OPT_ENGINE, 's'}, #endif {NULL} }; 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; char *dhfile = NULL, *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 const char *unix_path = NULL; #ifndef NO_SYS_UN_H int unlink_unix_path = 0; #endif int (*server_cb) (char *hostname, int s, int stype, unsigned char *context); int vpmtouched = 0, build_chain = 0, no_cache = 0, ext_cache = 0; int no_tmp_rsa = 0, no_dhe = 0, no_ecdhe = 0, nocert = 0, ret = 1; 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, socket_type = SOCK_STREAM; int state = 0, crl_format = FORMAT_PEM, crl_download = 0; unsigned short port = 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 }; #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) { #ifdef OPENSSL_NO_PSK case OPT_PSK_HINT: case OPT_PSK: #endif #ifdef OPENSSL_NO_DTLS1 case OPT_DTLS: case OPT_DTLS1: case OPT_DTLS1_2: case OPT_TIMEOUT: case OPT_MTU: case OPT_CHAIN: #endif 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_PORT: if (!extract_port(opt_arg(), &port)) goto end; break; case OPT_UNIX: #ifdef NO_SYS_UN_H BIO_printf(bio_err, "unix domain sockets unsupported\n"); goto end; #else unix_path = opt_arg(); #endif break; case OPT_UNLINK: #ifdef NO_SYS_UN_H BIO_printf(bio_err, "unix domain sockets unsupported\n"); goto end; #else unlink_unix_path = 1; #endif break; 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: dhfile = opt_arg(); 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_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_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_TMP_RSA: no_tmp_rsa = 1; break; case OPT_NO_DHE: no_dhe = 1; break; case OPT_NO_ECDHE: no_ecdhe = 1; break; case OPT_NO_RESUME_EPHEMERAL: no_resume_ephemeral = 1; break; #ifndef OPENSSL_NO_PSK case OPT_PSK_HINT: psk_identity_hint = opt_arg(); break; case OPT_PSK: for (p = psk_key = opt_arg(); *p; p++) { if (isxdigit(*p)) continue; BIO_printf(bio_err, "Not a hex number '%s'\n", *argv); goto end; } break; #else case OPT_PSK_HINT: case OPT_PSK: break; #endif #ifndef OPENSSL_NO_SRP case OPT_SRPVFILE: srp_verifier_file = opt_arg(); meth = TLSv1_server_method(); break; case OPT_SRPUSERSEED: srpuserseed = opt_arg(); meth = TLSv1_server_method(); break; #else case OPT_SRPVFILE: case OPT_SRPUSERSEED: break; #endif 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_SSL3: #ifndef OPENSSL_NO_SSL3 meth = SSLv3_server_method(); #endif break; case OPT_TLS1_2: meth = TLSv1_2_server_method(); break; case OPT_TLS1_1: meth = TLSv1_1_server_method(); break; case OPT_TLS1: meth = TLSv1_server_method(); break; #ifndef OPENSSL_NO_DTLS1 case OPT_DTLS: meth = DTLS_server_method(); socket_type = SOCK_DGRAM; break; case OPT_DTLS1: meth = DTLSv1_server_method(); socket_type = SOCK_DGRAM; break; case OPT_DTLS1_2: meth = DTLSv1_2_server_method(); socket_type = SOCK_DGRAM; break; case OPT_TIMEOUT: enable_timeouts = 1; break; case OPT_MTU: socket_mtu = atol(opt_arg()); break; case OPT_CHAIN: cert_chain = 1; break; #else case OPT_DTLS: case OPT_DTLS1: case OPT_DTLS1_2: case OPT_TIMEOUT: case OPT_MTU: case OPT_CHAIN: break; #endif 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; #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK) case OPT_JPAKE: jpake_secret = opt_arg(); break; #else case OPT_JPAKE: goto opthelp; #endif case OPT_SRTP_PROFILES: srtp_profiles = opt_arg(); break; case OPT_KEYMATEXPORT: keymatexportlabel = opt_arg(); break; case OPT_KEYMATEXPORTLEN: keymatexportlen = atoi(opt_arg()); break; } } argc = opt_num_rest(); argv = opt_rest(); #ifndef OPENSSL_NO_DTLS1 if (www && socket_type == SOCK_DGRAM) { BIO_printf(bio_err, "Can't use -HTTP, -www or -WWW with DTLS\n"); goto end; } #endif if (unix_path && (socket_type != SOCK_STREAM)) { BIO_printf(bio_err, "Can't use unix sockets and datagrams together\n"); goto end; } #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK) if (jpake_secret) { if (psk_key) { BIO_printf(bio_err, "Can't use JPAKE and PSK together\n"); goto end; } psk_identity = "JPAKE"; } #endif if (!app_passwd(passarg, dpassarg, &pass, &dpass)) { BIO_printf(bio_err, "Error getting password\n"); goto end; } if (!app_load_modules(NULL)) 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, NULL, e, "server certificate file"); if (!s_cert) { ERR_print_errors(bio_err); goto end; } if (s_chain_file) { s_chain = load_certs(s_chain_file, FORMAT_PEM, NULL, e, "server certificate chain"); if (!s_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, NULL, e, "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, NULL, e, "second server certificate file"); if (!s_dcert) { ERR_print_errors(bio_err); goto end; } if (s_dchain_file) { s_dchain = load_certs(s_dchain_file, FORMAT_PEM, NULL, e, "second server certificate chain"); if (!s_dchain) 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 (sdebug) ssl_ctx_security_debug(ctx, sdebug); if (ctx == NULL) { 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); #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)) { 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, no_ecdhe, jpake_secret == NULL)) 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 ((!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, no_ecdhe, jpake_secret == NULL)) 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; } #ifndef OPENSSL_NO_RSA if (!no_tmp_rsa) { SSL_CTX_set_tmp_rsa_callback(ctx, tmp_rsa_cb); if (ctx2) SSL_CTX_set_tmp_rsa_callback(ctx2, tmp_rsa_cb); } #endif 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 # ifdef OPENSSL_NO_JPAKE if (psk_key != NULL) # else if (psk_key != NULL || jpake_secret) # endif { if (s_debug) BIO_printf(bio_s_out, "PSK key given or JPAKE in use, 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; #ifndef NO_SYS_UN_H if (unix_path) { if (unlink_unix_path) unlink(unix_path); do_server_unix(unix_path, &accept_socket, server_cb, context, naccept); } else #endif do_server(port, socket_type, &accept_socket, 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); 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); } static void print_stats(BIO *bio, SSL_CTX *ssl_ctx) { BIO_printf(bio, "%4ld items in the session cache\n", SSL_CTX_sess_number(ssl_ctx)); BIO_printf(bio, "%4ld client connects (SSL_connect())\n", SSL_CTX_sess_connect(ssl_ctx)); BIO_printf(bio, "%4ld client renegotiates (SSL_connect())\n", SSL_CTX_sess_connect_renegotiate(ssl_ctx)); BIO_printf(bio, "%4ld client connects that finished\n", SSL_CTX_sess_connect_good(ssl_ctx)); BIO_printf(bio, "%4ld server accepts (SSL_accept())\n", SSL_CTX_sess_accept(ssl_ctx)); BIO_printf(bio, "%4ld server renegotiates (SSL_accept())\n", SSL_CTX_sess_accept_renegotiate(ssl_ctx)); BIO_printf(bio, "%4ld server accepts that finished\n", SSL_CTX_sess_accept_good(ssl_ctx)); BIO_printf(bio, "%4ld session cache hits\n", SSL_CTX_sess_hits(ssl_ctx)); BIO_printf(bio, "%4ld session cache misses\n", SSL_CTX_sess_misses(ssl_ctx)); BIO_printf(bio, "%4ld session cache timeouts\n", SSL_CTX_sess_timeouts(ssl_ctx)); BIO_printf(bio, "%4ld callback cache hits\n", SSL_CTX_sess_cb_hits(ssl_ctx)); BIO_printf(bio, "%4ld cache full overflows (%ld allowed)\n", SSL_CTX_sess_cache_full(ssl_ctx), SSL_CTX_sess_get_cache_size(ssl_ctx)); } static int sv_body(char *hostname, 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; } 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 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); } #ifndef OPENSSL_NO_JPAKE if (jpake_secret) jpake_server_auth(bio_s_out, sbio, jpake_secret); #endif SSL_set_bio(con, sbio, sbio); SSL_set_accept_state(con); /* SSL_set_fd(con,s); */ if (s_debug) { SSL_set_debug(con, 1); 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); 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_callback_parm.user = SRP_VBASE_get_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_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) { if (!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_callback_parm.user = SRP_VBASE_get_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_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); } static void close_accept_socket(void) { BIO_printf(bio_err, "shutdown accept socket\n"); if (accept_socket >= 0) { SHUTDOWN2(accept_socket); } } 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; i = SSL_accept(con); #ifdef CERT_CB_TEST_RETRY { while (i <= 0 && SSL_get_error(con, i) == SSL_ERROR_WANT_X509_LOOKUP && SSL_state(con) == SSL3_ST_SR_CLNT_HELLO_C) { 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_callback_parm.user = SRP_VBASE_get_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 if (i <= 0) { if (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_cache_hit(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); } #ifndef OPENSSL_NO_DH static DH *load_dh_param(const char *dhfile) { DH *ret = NULL; BIO *bio; if ((bio = BIO_new_file(dhfile, "r")) == NULL) goto err; ret = PEM_read_bio_DHparams(bio, NULL, NULL, NULL); err: BIO_free(bio); return (ret); } #endif static int www_body(char *hostname, 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 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) { SSL_set_debug(con, 1); 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)) { if (!s_quiet) ERR_print_errors(bio_err); goto err; } else { BIO_printf(bio_s_out, "read R BLOCK\n"); #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); 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; } /* EVIL HACK! */ SSL_set_state(con, SSL_ST_ACCEPT); i = SSL_do_handshake(con); BIO_printf(bio_s_out, "SSL_do_handshake -> %d\n", i); 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; } } BIO_puts(io, "HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n"); BIO_puts(io, "\n"); BIO_puts(io, "
\n");
/*                      BIO_puts(io,SSLeay_version(SSLEAY_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, "<");
                        break;
                    case '>':
                        BIO_puts(io, ">");
                        break;
                    case '&':
                        BIO_puts(io, "&");
                        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_cache_hit(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, "\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))
                            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);
}

static int rev_body(char *hostname, 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) {
        SSL_set_debug(con, 1);
        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;
        }
    }
    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");
#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);
}

#ifndef OPENSSL_NO_RSA
static RSA *tmp_rsa_cb(SSL *s, int is_export, int keylength)
{
    BIGNUM *bn = NULL;
    static RSA *rsa_tmp = NULL;

    if (!rsa_tmp && ((bn = BN_new()) == NULL))
        BIO_printf(bio_err, "Allocation error in generating RSA key\n");
    if (!rsa_tmp && bn) {
        if (!s_quiet) {
            BIO_printf(bio_err, "Generating temp (%d bit) RSA key...",
                       keylength);
            (void)BIO_flush(bio_err);
        }
        if (!BN_set_word(bn, RSA_F4) || ((rsa_tmp = RSA_new()) == NULL) ||
            !RSA_generate_key_ex(rsa_tmp, keylength, bn, NULL)) {
            RSA_free(rsa_tmp);
            rsa_tmp = NULL;
        }
        if (!s_quiet) {
            BIO_printf(bio_err, "\n");
            (void)BIO_flush(bio_err);
        }
        BN_free(bn);
    }
    return (rsa_tmp);
}
#endif

#define MAX_SESSION_ID_ATTEMPTS 10
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;
}

/*
 * By default s_server uses an in-memory cache which caches SSL_SESSION
 * structures without any serialisation. This hides some bugs which only
 * become apparent in deployed servers. By implementing a basic external
 * session cache some issues can be debugged using s_server.
 */

typedef struct simple_ssl_session_st {
    unsigned char *id;
    unsigned int idlen;
    unsigned char *der;
    int derlen;
    struct simple_ssl_session_st *next;
} simple_ssl_session;

static simple_ssl_session *first = NULL;

static int add_session(SSL *ssl, SSL_SESSION *session)
{
    simple_ssl_session *sess = app_malloc(sizeof(*sess), "get session");
    unsigned char *p;

    SSL_SESSION_get_id(session, &sess->idlen);
    sess->derlen = i2d_SSL_SESSION(session, NULL);
    if (sess->derlen < 0) {
        BIO_printf(bio_err, "Error encoding session\n");
        OPENSSL_free(sess);
        return 0;
    }

    sess->id = BUF_memdup(SSL_SESSION_get_id(session, NULL), sess->idlen);
    sess->der = app_malloc(sess->derlen, "get session buffer");
    if (!sess->id) {
        BIO_printf(bio_err, "Out of memory adding to external cache\n");
        OPENSSL_free(sess->id);
        OPENSSL_free(sess->der);
        OPENSSL_free(sess);
        return 0;
    }
    p = sess->der;

    /* Assume it still works. */
    if (i2d_SSL_SESSION(session, &p) != sess->derlen) {
        BIO_printf(bio_err, "Unexpected session encoding length\n");
        OPENSSL_free(sess->id);
        OPENSSL_free(sess->der);
        OPENSSL_free(sess);
        return 0;
    }

    sess->next = first;
    first = sess;
    BIO_printf(bio_err, "New session added to external cache\n");
    return 0;
}

static SSL_SESSION *get_session(SSL *ssl, unsigned char *id, int idlen,
                                int *do_copy)
{
    simple_ssl_session *sess;
    *do_copy = 0;
    for (sess = first; sess; sess = sess->next) {
        if (idlen == (int)sess->idlen && !memcmp(sess->id, id, idlen)) {
            const unsigned char *p = sess->der;
            BIO_printf(bio_err, "Lookup session: cache hit\n");
            return d2i_SSL_SESSION(NULL, &p, sess->derlen);
        }
    }
    BIO_printf(bio_err, "Lookup session: cache miss\n");
    return NULL;
}

static void del_session(SSL_CTX *sctx, SSL_SESSION *session)
{
    simple_ssl_session *sess, *prev = NULL;
    const unsigned char *id;
    unsigned int idlen;
    id = SSL_SESSION_get_id(session, &idlen);
    for (sess = first; sess; sess = sess->next) {
        if (idlen == sess->idlen && !memcmp(sess->id, id, idlen)) {
            if (prev)
                prev->next = sess->next;
            else
                first = sess->next;
            OPENSSL_free(sess->id);
            OPENSSL_free(sess->der);
            OPENSSL_free(sess);
            return;
        }
        prev = sess;
    }
}

static void init_session_cache_ctx(SSL_CTX *sctx)
{
    SSL_CTX_set_session_cache_mode(sctx,
                                   SSL_SESS_CACHE_NO_INTERNAL |
                                   SSL_SESS_CACHE_SERVER);
    SSL_CTX_sess_set_new_cb(sctx, add_session);
    SSL_CTX_sess_set_get_cb(sctx, get_session);
    SSL_CTX_sess_set_remove_cb(sctx, del_session);
}

static void free_sessions(void)
{
    simple_ssl_session *sess, *tsess;
    for (sess = first; sess;) {
        OPENSSL_free(sess->id);
        OPENSSL_free(sess->der);
        tsess = sess;
        sess = sess->next;
        OPENSSL_free(tsess);
    }
    first = NULL;
}