/* 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). * */ /* callback functions used by s_client, s_server, and s_time */ #include #include #include /* for memcpy() and strcmp() */ #define USE_SOCKETS #include "apps.h" #undef USE_SOCKETS #include #include #include #include #include #ifndef OPENSSL_NO_DH # include #endif #include "s_apps.h" #define COOKIE_SECRET_LENGTH 16 int verify_depth = 0; int verify_quiet = 0; int verify_error = X509_V_OK; int verify_return_error = 0; unsigned char cookie_secret[COOKIE_SECRET_LENGTH]; int cookie_initialized = 0; static const char *lookup(int val, const STRINT_PAIR* list, const char* def) { for ( ; list->name; ++list) if (list->retval == val) return list->name; return def; } int verify_callback(int ok, X509_STORE_CTX *ctx) { X509 *err_cert; int err, depth; err_cert = X509_STORE_CTX_get_current_cert(ctx); err = X509_STORE_CTX_get_error(ctx); depth = X509_STORE_CTX_get_error_depth(ctx); if (!verify_quiet || !ok) { BIO_printf(bio_err, "depth=%d ", depth); if (err_cert) { X509_NAME_print_ex(bio_err, X509_get_subject_name(err_cert), 0, XN_FLAG_ONELINE); BIO_puts(bio_err, "\n"); } else BIO_puts(bio_err, "\n"); } if (!ok) { BIO_printf(bio_err, "verify error:num=%d:%s\n", err, X509_verify_cert_error_string(err)); if (verify_depth >= depth) { if (!verify_return_error) ok = 1; verify_error = X509_V_OK; } else { ok = 0; verify_error = X509_V_ERR_CERT_CHAIN_TOO_LONG; } } switch (err) { case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: BIO_puts(bio_err, "issuer= "); X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert), 0, XN_FLAG_ONELINE); BIO_puts(bio_err, "\n"); break; case X509_V_ERR_CERT_NOT_YET_VALID: case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: BIO_printf(bio_err, "notBefore="); ASN1_TIME_print(bio_err, X509_get_notBefore(err_cert)); BIO_printf(bio_err, "\n"); break; case X509_V_ERR_CERT_HAS_EXPIRED: case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: BIO_printf(bio_err, "notAfter="); ASN1_TIME_print(bio_err, X509_get_notAfter(err_cert)); BIO_printf(bio_err, "\n"); break; case X509_V_ERR_NO_EXPLICIT_POLICY: if (!verify_quiet) policies_print(ctx); break; } if (err == X509_V_OK && ok == 2 && !verify_quiet) policies_print(ctx); if (ok && !verify_quiet) BIO_printf(bio_err, "verify return:%d\n", ok); return (ok); } int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file) { if (cert_file != NULL) { if (SSL_CTX_use_certificate_file(ctx, cert_file, SSL_FILETYPE_PEM) <= 0) { BIO_printf(bio_err, "unable to get certificate from '%s'\n", cert_file); ERR_print_errors(bio_err); return (0); } if (key_file == NULL) key_file = cert_file; if (SSL_CTX_use_PrivateKey_file(ctx, key_file, SSL_FILETYPE_PEM) <= 0) { BIO_printf(bio_err, "unable to get private key from '%s'\n", key_file); ERR_print_errors(bio_err); return (0); } /* * If we are using DSA, we can copy the parameters from the private * key */ /* * Now we know that a key and cert have been set against the SSL * context */ if (!SSL_CTX_check_private_key(ctx)) { BIO_printf(bio_err, "Private key does not match the certificate public key\n"); return (0); } } return (1); } int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key, STACK_OF(X509) *chain, int build_chain) { int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0; if (cert == NULL) return 1; if (SSL_CTX_use_certificate(ctx, cert) <= 0) { BIO_printf(bio_err, "error setting certificate\n"); ERR_print_errors(bio_err); return 0; } if (SSL_CTX_use_PrivateKey(ctx, key) <= 0) { BIO_printf(bio_err, "error setting private key\n"); ERR_print_errors(bio_err); return 0; } /* * Now we know that a key and cert have been set against the SSL context */ if (!SSL_CTX_check_private_key(ctx)) { BIO_printf(bio_err, "Private key does not match the certificate public key\n"); return 0; } if (chain && !SSL_CTX_set1_chain(ctx, chain)) { BIO_printf(bio_err, "error setting certificate chain\n"); ERR_print_errors(bio_err); return 0; } if (build_chain && !SSL_CTX_build_cert_chain(ctx, chflags)) { BIO_printf(bio_err, "error building certificate chain\n"); ERR_print_errors(bio_err); return 0; } return 1; } static STRINT_PAIR cert_type_list[] = { {"RSA sign", TLS_CT_RSA_SIGN}, {"DSA sign", TLS_CT_DSS_SIGN}, {"RSA fixed DH", TLS_CT_RSA_FIXED_DH}, {"DSS fixed DH", TLS_CT_DSS_FIXED_DH}, {"ECDSA sign", TLS_CT_ECDSA_SIGN}, {"RSA fixed ECDH", TLS_CT_RSA_FIXED_ECDH}, {"ECDSA fixed ECDH", TLS_CT_ECDSA_FIXED_ECDH}, {"GOST01 Sign", TLS_CT_GOST01_SIGN}, {NULL} }; static void ssl_print_client_cert_types(BIO *bio, SSL *s) { const unsigned char *p; int i; int cert_type_num = SSL_get0_certificate_types(s, &p); if (!cert_type_num) return; BIO_puts(bio, "Client Certificate Types: "); for (i = 0; i < cert_type_num; i++) { unsigned char cert_type = p[i]; const char *cname = lookup((int)cert_type, cert_type_list, NULL); if (i) BIO_puts(bio, ", "); if (cname) BIO_puts(bio, cname); else BIO_printf(bio, "UNKNOWN (%d),", cert_type); } BIO_puts(bio, "\n"); } static int do_print_sigalgs(BIO *out, SSL *s, int shared) { int i, nsig, client; client = SSL_is_server(s) ? 0 : 1; if (shared) nsig = SSL_get_shared_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL); else nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL); if (nsig == 0) return 1; if (shared) BIO_puts(out, "Shared "); if (client) BIO_puts(out, "Requested "); BIO_puts(out, "Signature Algorithms: "); for (i = 0; i < nsig; i++) { int hash_nid, sign_nid; unsigned char rhash, rsign; const char *sstr = NULL; if (shared) SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL, &rsign, &rhash); else SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL, &rsign, &rhash); if (i) BIO_puts(out, ":"); if (sign_nid == EVP_PKEY_RSA) sstr = "RSA"; else if (sign_nid == EVP_PKEY_DSA) sstr = "DSA"; else if (sign_nid == EVP_PKEY_EC) sstr = "ECDSA"; if (sstr) BIO_printf(out, "%s+", sstr); else BIO_printf(out, "0x%02X+", (int)rsign); if (hash_nid != NID_undef) BIO_printf(out, "%s", OBJ_nid2sn(hash_nid)); else BIO_printf(out, "0x%02X", (int)rhash); } BIO_puts(out, "\n"); return 1; } int ssl_print_sigalgs(BIO *out, SSL *s) { int mdnid; if (!SSL_is_server(s)) ssl_print_client_cert_types(out, s); do_print_sigalgs(out, s, 0); do_print_sigalgs(out, s, 1); if (SSL_get_peer_signature_nid(s, &mdnid)) BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(mdnid)); return 1; } #ifndef OPENSSL_NO_EC int ssl_print_point_formats(BIO *out, SSL *s) { int i, nformats; const char *pformats; nformats = SSL_get0_ec_point_formats(s, &pformats); if (nformats <= 0) return 1; BIO_puts(out, "Supported Elliptic Curve Point Formats: "); for (i = 0; i < nformats; i++, pformats++) { if (i) BIO_puts(out, ":"); switch (*pformats) { case TLSEXT_ECPOINTFORMAT_uncompressed: BIO_puts(out, "uncompressed"); break; case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime: BIO_puts(out, "ansiX962_compressed_prime"); break; case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2: BIO_puts(out, "ansiX962_compressed_char2"); break; default: BIO_printf(out, "unknown(%d)", (int)*pformats); break; } } if (nformats <= 0) BIO_puts(out, "NONE"); BIO_puts(out, "\n"); return 1; } int ssl_print_curves(BIO *out, SSL *s, int noshared) { int i, ncurves, *curves, nid; const char *cname; ncurves = SSL_get1_curves(s, NULL); if (ncurves <= 0) return 1; curves = app_malloc(ncurves * sizeof(int), "curves to print"); SSL_get1_curves(s, curves); BIO_puts(out, "Supported Elliptic Curves: "); for (i = 0; i < ncurves; i++) { if (i) BIO_puts(out, ":"); nid = curves[i]; /* If unrecognised print out hex version */ if (nid & TLSEXT_nid_unknown) BIO_printf(out, "0x%04X", nid & 0xFFFF); else { /* Use NIST name for curve if it exists */ cname = EC_curve_nid2nist(nid); if (!cname) cname = OBJ_nid2sn(nid); BIO_printf(out, "%s", cname); } } if (ncurves == 0) BIO_puts(out, "NONE"); OPENSSL_free(curves); if (noshared) { BIO_puts(out, "\n"); return 1; } BIO_puts(out, "\nShared Elliptic curves: "); ncurves = SSL_get_shared_curve(s, -1); for (i = 0; i < ncurves; i++) { if (i) BIO_puts(out, ":"); nid = SSL_get_shared_curve(s, i); cname = EC_curve_nid2nist(nid); if (!cname) cname = OBJ_nid2sn(nid); BIO_printf(out, "%s", cname); } if (ncurves == 0) BIO_puts(out, "NONE"); BIO_puts(out, "\n"); return 1; } #endif int ssl_print_tmp_key(BIO *out, SSL *s) { EVP_PKEY *key; if (!SSL_get_server_tmp_key(s, &key)) return 1; BIO_puts(out, "Server Temp Key: "); switch (EVP_PKEY_id(key)) { case EVP_PKEY_RSA: BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_bits(key)); break; case EVP_PKEY_DH: BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(key)); break; #ifndef OPENSSL_NO_EC case EVP_PKEY_EC: { EC_KEY *ec = EVP_PKEY_get1_EC_KEY(key); int nid; const char *cname; nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec)); EC_KEY_free(ec); cname = EC_curve_nid2nist(nid); if (!cname) cname = OBJ_nid2sn(nid); BIO_printf(out, "ECDH, %s, %d bits\n", cname, EVP_PKEY_bits(key)); } #endif } EVP_PKEY_free(key); return 1; } long bio_dump_callback(BIO *bio, int cmd, const char *argp, int argi, long argl, long ret) { BIO *out; out = (BIO *)BIO_get_callback_arg(bio); if (out == NULL) return (ret); if (cmd == (BIO_CB_READ | BIO_CB_RETURN)) { BIO_printf(out, "read from %p [%p] (%lu bytes => %ld (0x%lX))\n", (void *)bio, argp, (unsigned long)argi, ret, ret); BIO_dump(out, argp, (int)ret); return (ret); } else if (cmd == (BIO_CB_WRITE | BIO_CB_RETURN)) { BIO_printf(out, "write to %p [%p] (%lu bytes => %ld (0x%lX))\n", (void *)bio, argp, (unsigned long)argi, ret, ret); BIO_dump(out, argp, (int)ret); } return (ret); } void apps_ssl_info_callback(const SSL *s, int where, int ret) { const char *str; int w; w = where & ~SSL_ST_MASK; if (w & SSL_ST_CONNECT) str = "SSL_connect"; else if (w & SSL_ST_ACCEPT) str = "SSL_accept"; else str = "undefined"; if (where & SSL_CB_LOOP) { BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s)); } else if (where & SSL_CB_ALERT) { str = (where & SSL_CB_READ) ? "read" : "write"; BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n", str, SSL_alert_type_string_long(ret), SSL_alert_desc_string_long(ret)); } else if (where & SSL_CB_EXIT) { if (ret == 0) BIO_printf(bio_err, "%s:failed in %s\n", str, SSL_state_string_long(s)); else if (ret < 0) { BIO_printf(bio_err, "%s:error in %s\n", str, SSL_state_string_long(s)); } } } static STRINT_PAIR ssl_versions[] = { {"SSL 3.0", SSL3_VERSION}, {"TLS 1.0", TLS1_VERSION}, {"TLS 1.1", TLS1_1_VERSION}, {"TLS 1.2", TLS1_2_VERSION}, {"DTLS 1.0", DTLS1_VERSION}, {"DTLS 1.0 (bad)", DTLS1_BAD_VER}, {NULL} }; static STRINT_PAIR alert_types[] = { {" close_notify", 0}, {" unexpected_message", 10}, {" bad_record_mac", 20}, {" decryption_failed", 21}, {" record_overflow", 22}, {" decompression_failure", 30}, {" handshake_failure", 40}, {" bad_certificate", 42}, {" unsupported_certificate", 43}, {" certificate_revoked", 44}, {" certificate_expired", 45}, {" certificate_unknown", 46}, {" illegal_parameter", 47}, {" unknown_ca", 48}, {" access_denied", 49}, {" decode_error", 50}, {" decrypt_error", 51}, {" export_restriction", 60}, {" protocol_version", 70}, {" insufficient_security", 71}, {" internal_error", 80}, {" user_canceled", 90}, {" no_renegotiation", 100}, {" unsupported_extension", 110}, {" certificate_unobtainable", 111}, {" unrecognized_name", 112}, {" bad_certificate_status_response", 113}, {" bad_certificate_hash_value", 114}, {" unknown_psk_identity", 115}, {NULL} }; static STRINT_PAIR handshakes[] = { {", HelloRequest", 0}, {", ClientHello", 1}, {", ServerHello", 2}, {", HelloVerifyRequest", 3}, {", Certificate", 11}, {", ServerKeyExchange", 12}, {", CertificateRequest", 13}, {", ServerHelloDone", 14}, {", CertificateVerify", 15}, {", ClientKeyExchange", 16}, {", Finished", 20}, {NULL} }; void msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg) { BIO *bio = arg; const char *str_write_p = write_p ? ">>>" : "<<<"; const char *str_version = lookup(version, ssl_versions, "???"); const char *str_content_type = "", *str_details1 = "", *str_details2 = ""; const unsigned char* bp = buf; if (version == SSL3_VERSION || version == TLS1_VERSION || version == TLS1_1_VERSION || version == TLS1_2_VERSION || version == DTLS1_VERSION || version == DTLS1_BAD_VER) { switch (content_type) { case 20: str_content_type = "ChangeCipherSpec"; break; case 21: str_content_type = "Alert"; str_details1 = ", ???"; if (len == 2) { switch (bp[0]) { case 1: str_details1 = ", warning"; break; case 2: str_details1 = ", fatal"; break; } str_details2 = lookup((int)bp[1], alert_types, " ???"); } break; case 22: str_content_type = "Handshake"; str_details1 = "???"; if (len > 0) str_details1 = lookup((int)bp[0], handshakes, "???"); break; #ifndef OPENSSL_NO_HEARTBEATS case 24: str_details1 = ", Heartbeat"; if (len > 0) { switch (bp[0]) { case 1: str_details1 = ", HeartbeatRequest"; break; case 2: str_details1 = ", HeartbeatResponse"; break; } } break; #endif } } BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version, str_content_type, (unsigned long)len, str_details1, str_details2); if (len > 0) { size_t num, i; BIO_printf(bio, " "); num = len; for (i = 0; i < num; i++) { if (i % 16 == 0 && i > 0) BIO_printf(bio, "\n "); BIO_printf(bio, " %02x", ((const unsigned char *)buf)[i]); } if (i < len) BIO_printf(bio, " ..."); BIO_printf(bio, "\n"); } (void)BIO_flush(bio); } static STRINT_PAIR tlsext_types[] = { {"server name", TLSEXT_TYPE_server_name}, {"max fragment length", TLSEXT_TYPE_max_fragment_length}, {"client certificate URL", TLSEXT_TYPE_client_certificate_url}, {"trusted CA keys", TLSEXT_TYPE_trusted_ca_keys}, {"truncated HMAC", TLSEXT_TYPE_truncated_hmac}, {"status request", TLSEXT_TYPE_status_request}, {"user mapping", TLSEXT_TYPE_user_mapping}, {"client authz", TLSEXT_TYPE_client_authz}, {"server authz", TLSEXT_TYPE_server_authz}, {"cert type", TLSEXT_TYPE_cert_type}, {"elliptic curves", TLSEXT_TYPE_elliptic_curves}, {"EC point formats", TLSEXT_TYPE_ec_point_formats}, {"SRP", TLSEXT_TYPE_srp}, {"signature algorithms", TLSEXT_TYPE_signature_algorithms}, {"use SRTP", TLSEXT_TYPE_use_srtp}, {"heartbeat", TLSEXT_TYPE_heartbeat}, {"session ticket", TLSEXT_TYPE_session_ticket}, {"renegotiation info", TLSEXT_TYPE_renegotiate}, {"TLS padding", TLSEXT_TYPE_padding}, #ifdef TLSEXT_TYPE_next_proto_neg {"next protocol", TLSEXT_TYPE_next_proto_neg}, #endif #ifdef TLSEXT_TYPE_encrypt_then_mac {"encrypt-then-mac", TLSEXT_TYPE_encrypt_then_mac}, #endif #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation {"application layer protocol negotiation", TLSEXT_TYPE_application_layer_protocol_negotiation}, #endif {NULL} }; void tlsext_cb(SSL *s, int client_server, int type, unsigned char *data, int len, void *arg) { BIO *bio = arg; const char *extname = lookup(type, tlsext_types, "unknown"); BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n", client_server ? "server" : "client", extname, type, len); BIO_dump(bio, (char *)data, len); (void)BIO_flush(bio); } int generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len) { unsigned char *buffer, result[EVP_MAX_MD_SIZE]; unsigned int length, resultlength; union { struct sockaddr sa; struct sockaddr_in s4; #if OPENSSL_USE_IPV6 struct sockaddr_in6 s6; #endif } peer; /* Initialize a random secret */ if (!cookie_initialized) { if (RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH) <= 0) { BIO_printf(bio_err, "error setting random cookie secret\n"); return 0; } cookie_initialized = 1; } /* Read peer information */ (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer); /* Create buffer with peer's address and port */ length = 0; switch (peer.sa.sa_family) { case AF_INET: length += sizeof(struct in_addr); length += sizeof(peer.s4.sin_port); break; #if OPENSSL_USE_IPV6 case AF_INET6: length += sizeof(struct in6_addr); length += sizeof(peer.s6.sin6_port); break; #endif default: OPENSSL_assert(0); break; } buffer = app_malloc(length, "cookie generate buffer"); switch (peer.sa.sa_family) { case AF_INET: memcpy(buffer, &peer.s4.sin_port, sizeof(peer.s4.sin_port)); memcpy(buffer + sizeof(peer.s4.sin_port), &peer.s4.sin_addr, sizeof(struct in_addr)); break; #if OPENSSL_USE_IPV6 case AF_INET6: memcpy(buffer, &peer.s6.sin6_port, sizeof(peer.s6.sin6_port)); memcpy(buffer + sizeof(peer.s6.sin6_port), &peer.s6.sin6_addr, sizeof(struct in6_addr)); break; #endif default: OPENSSL_assert(0); break; } /* Calculate HMAC of buffer using the secret */ HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH, buffer, length, result, &resultlength); OPENSSL_free(buffer); memcpy(cookie, result, resultlength); *cookie_len = resultlength; return 1; } int verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len) { unsigned char *buffer, result[EVP_MAX_MD_SIZE]; unsigned int length, resultlength; union { struct sockaddr sa; struct sockaddr_in s4; #if OPENSSL_USE_IPV6 struct sockaddr_in6 s6; #endif } peer; /* If secret isn't initialized yet, the cookie can't be valid */ if (!cookie_initialized) return 0; /* Read peer information */ (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer); /* Create buffer with peer's address and port */ length = 0; switch (peer.sa.sa_family) { case AF_INET: length += sizeof(struct in_addr); length += sizeof(peer.s4.sin_port); break; #if OPENSSL_USE_IPV6 case AF_INET6: length += sizeof(struct in6_addr); length += sizeof(peer.s6.sin6_port); break; #endif default: OPENSSL_assert(0); break; } buffer = app_malloc(length, "cookie verify buffer"); switch (peer.sa.sa_family) { case AF_INET: memcpy(buffer, &peer.s4.sin_port, sizeof(peer.s4.sin_port)); memcpy(buffer + sizeof(peer.s4.sin_port), &peer.s4.sin_addr, sizeof(struct in_addr)); break; #if OPENSSL_USE_IPV6 case AF_INET6: memcpy(buffer, &peer.s6.sin6_port, sizeof(peer.s6.sin6_port)); memcpy(buffer + sizeof(peer.s6.sin6_port), &peer.s6.sin6_addr, sizeof(struct in6_addr)); break; #endif default: OPENSSL_assert(0); break; } /* Calculate HMAC of buffer using the secret */ HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH, buffer, length, result, &resultlength); OPENSSL_free(buffer); if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0) return 1; return 0; } /* * Example of extended certificate handling. Where the standard support of * one certificate per algorithm is not sufficient an application can decide * which certificate(s) to use at runtime based on whatever criteria it deems * appropriate. */ /* Linked list of certificates, keys and chains */ struct ssl_excert_st { int certform; const char *certfile; int keyform; const char *keyfile; const char *chainfile; X509 *cert; EVP_PKEY *key; STACK_OF(X509) *chain; int build_chain; struct ssl_excert_st *next, *prev; }; static STRINT_PAIR chain_flags[] = { {"Overall Validity", CERT_PKEY_VALID}, {"Sign with EE key", CERT_PKEY_SIGN}, {"EE signature", CERT_PKEY_EE_SIGNATURE}, {"CA signature", CERT_PKEY_CA_SIGNATURE}, {"EE key parameters", CERT_PKEY_EE_PARAM}, {"CA key parameters", CERT_PKEY_CA_PARAM}, {"Explicity sign with EE key", CERT_PKEY_EXPLICIT_SIGN}, {"Issuer Name", CERT_PKEY_ISSUER_NAME}, {"Certificate Type", CERT_PKEY_CERT_TYPE}, {NULL} }; static void print_chain_flags(SSL *s, int flags) { STRINT_PAIR *pp; for (pp = chain_flags; pp->name; ++pp) BIO_printf(bio_err, "\t%s: %s\n", pp->name, (flags & pp->retval) ? "OK" : "NOT OK"); BIO_printf(bio_err, "\tSuite B: "); if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS) BIO_puts(bio_err, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n"); else BIO_printf(bio_err, "not tested\n"); } /* * Very basic selection callback: just use any certificate chain reported as * valid. More sophisticated could prioritise according to local policy. */ static int set_cert_cb(SSL *ssl, void *arg) { int i, rv; SSL_EXCERT *exc = arg; #ifdef CERT_CB_TEST_RETRY static int retry_cnt; if (retry_cnt < 5) { retry_cnt++; BIO_printf(bio_err, "Certificate callback retry test: count %d\n", retry_cnt); return -1; } #endif SSL_certs_clear(ssl); if (!exc) return 1; /* * Go to end of list and traverse backwards since we prepend newer * entries this retains the original order. */ while (exc->next) exc = exc->next; i = 0; while (exc) { i++; rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain); BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i); X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0, XN_FLAG_ONELINE); BIO_puts(bio_err, "\n"); print_chain_flags(ssl, rv); if (rv & CERT_PKEY_VALID) { if (!SSL_use_certificate(ssl, exc->cert) || !SSL_use_PrivateKey(ssl, exc->key)) { return 0; } /* * NB: we wouldn't normally do this as it is not efficient * building chains on each connection better to cache the chain * in advance. */ if (exc->build_chain) { if (!SSL_build_cert_chain(ssl, 0)) return 0; } else if (exc->chain) SSL_set1_chain(ssl, exc->chain); } exc = exc->prev; } return 1; } void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc) { SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc); } static int ssl_excert_prepend(SSL_EXCERT **pexc) { SSL_EXCERT *exc = app_malloc(sizeof(*exc), "prepend cert"); memset(exc, 0, sizeof(*exc)); exc->next = *pexc; *pexc = exc; if (exc->next) { exc->certform = exc->next->certform; exc->keyform = exc->next->keyform; exc->next->prev = exc; } else { exc->certform = FORMAT_PEM; exc->keyform = FORMAT_PEM; } return 1; } void ssl_excert_free(SSL_EXCERT *exc) { SSL_EXCERT *curr; if (!exc) return; while (exc) { X509_free(exc->cert); EVP_PKEY_free(exc->key); sk_X509_pop_free(exc->chain, X509_free); curr = exc; exc = exc->next; OPENSSL_free(curr); } } int load_excert(SSL_EXCERT **pexc) { SSL_EXCERT *exc = *pexc; if (!exc) return 1; /* If nothing in list, free and set to NULL */ if (!exc->certfile && !exc->next) { ssl_excert_free(exc); *pexc = NULL; return 1; } for (; exc; exc = exc->next) { if (!exc->certfile) { BIO_printf(bio_err, "Missing filename\n"); return 0; } exc->cert = load_cert(exc->certfile, exc->certform, NULL, NULL, "Server Certificate"); if (!exc->cert) return 0; if (exc->keyfile) { exc->key = load_key(exc->keyfile, exc->keyform, 0, NULL, NULL, "Server Key"); } else { exc->key = load_key(exc->certfile, exc->certform, 0, NULL, NULL, "Server Key"); } if (!exc->key) return 0; if (exc->chainfile) { exc->chain = load_certs(exc->chainfile, FORMAT_PEM, NULL, NULL, "Server Chain"); if (!exc->chain) return 0; } } return 1; } enum range { OPT_X_ENUM }; int args_excert(int opt, SSL_EXCERT **pexc) { SSL_EXCERT *exc = *pexc; assert(opt > OPT_X__FIRST); assert(opt < OPT_X__LAST); if (exc == NULL) { if (!ssl_excert_prepend(&exc)) { BIO_printf(bio_err, " %s: Error initialising xcert\n", opt_getprog()); goto err; } *pexc = exc; } switch ((enum range)opt) { case OPT_X__FIRST: case OPT_X__LAST: return 0; case OPT_X_CERT: if (exc->certfile && !ssl_excert_prepend(&exc)) { BIO_printf(bio_err, "%s: Error adding xcert\n", opt_getprog()); goto err; } exc->certfile = opt_arg(); break; case OPT_X_KEY: if (exc->keyfile) { BIO_printf(bio_err, "%s: Key already specified\n", opt_getprog()); goto err; } exc->keyfile = opt_arg(); break; case OPT_X_CHAIN: if (exc->chainfile) { BIO_printf(bio_err, "%s: Chain already specified\n", opt_getprog()); goto err; } exc->chainfile = opt_arg(); break; case OPT_X_CHAIN_BUILD: exc->build_chain = 1; break; case OPT_X_CERTFORM: if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &exc->certform)) return 0; break; case OPT_X_KEYFORM: if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &exc->keyform)) return 0; break; } return 1; err: ERR_print_errors(bio_err); ssl_excert_free(exc); *pexc = NULL; return 0; } static void print_raw_cipherlist(SSL *s) { const unsigned char *rlist; static const unsigned char scsv_id[] = { 0, 0, 0xFF }; size_t i, rlistlen, num; if (!SSL_is_server(s)) return; num = SSL_get0_raw_cipherlist(s, NULL); rlistlen = SSL_get0_raw_cipherlist(s, &rlist); BIO_puts(bio_err, "Client cipher list: "); for (i = 0; i < rlistlen; i += num, rlist += num) { const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist); if (i) BIO_puts(bio_err, ":"); if (c) BIO_puts(bio_err, SSL_CIPHER_get_name(c)); else if (!memcmp(rlist, scsv_id - num + 3, num)) BIO_puts(bio_err, "SCSV"); else { size_t j; BIO_puts(bio_err, "0x"); for (j = 0; j < num; j++) BIO_printf(bio_err, "%02X", rlist[j]); } } BIO_puts(bio_err, "\n"); } void print_ssl_summary(SSL *s) { const SSL_CIPHER *c; X509 *peer; /* const char *pnam = SSL_is_server(s) ? "client" : "server"; */ BIO_printf(bio_err, "Protocol version: %s\n", SSL_get_version(s)); print_raw_cipherlist(s); c = SSL_get_current_cipher(s); BIO_printf(bio_err, "Ciphersuite: %s\n", SSL_CIPHER_get_name(c)); do_print_sigalgs(bio_err, s, 0); peer = SSL_get_peer_certificate(s); if (peer) { int nid; BIO_puts(bio_err, "Peer certificate: "); X509_NAME_print_ex(bio_err, X509_get_subject_name(peer), 0, XN_FLAG_ONELINE); BIO_puts(bio_err, "\n"); if (SSL_get_peer_signature_nid(s, &nid)) BIO_printf(bio_err, "Hash used: %s\n", OBJ_nid2sn(nid)); } else BIO_puts(bio_err, "No peer certificate\n"); X509_free(peer); #ifndef OPENSSL_NO_EC ssl_print_point_formats(bio_err, s); if (SSL_is_server(s)) ssl_print_curves(bio_err, s, 1); else ssl_print_tmp_key(bio_err, s); #else if (!SSL_is_server(s)) ssl_print_tmp_key(bio_err, s); #endif } int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str, SSL_CTX *ctx, int no_ecdhe, int no_jpake) { int i; SSL_CONF_CTX_set_ssl_ctx(cctx, ctx); for (i = 0; i < sk_OPENSSL_STRING_num(str); i += 2) { const char *flag = sk_OPENSSL_STRING_value(str, i); const char *arg = sk_OPENSSL_STRING_value(str, i + 1); /* If no_ecdhe or named curve already specified don't need a default. */ if (!no_ecdhe && strcmp(flag, "-named_curve") == 0) no_ecdhe = 1; #ifndef OPENSSL_NO_JPAKE if (!no_jpake && (strcmp(flag, "-cipher") == 0)) { BIO_puts(bio_err, "JPAKE sets cipher to PSK\n"); return 0; } #endif if (SSL_CONF_cmd(cctx, flag, arg) <= 0) { if (arg) BIO_printf(bio_err, "Error with command: \"%s %s\"\n", flag, arg); else BIO_printf(bio_err, "Error with command: \"%s\"\n", flag); ERR_print_errors(bio_err); return 0; } } /* * This is a special case to keep existing s_server functionality: if we * don't have any curve specified *and* we haven't disabled ECDHE then * use P-256. */ if (!no_ecdhe) { if (SSL_CONF_cmd(cctx, "-named_curve", "P-256") <= 0) { BIO_puts(bio_err, "Error setting EC curve\n"); ERR_print_errors(bio_err); return 0; } } #ifndef OPENSSL_NO_JPAKE if (!no_jpake) { if (SSL_CONF_cmd(cctx, "-cipher", "PSK") <= 0) { BIO_puts(bio_err, "Error setting cipher to PSK\n"); ERR_print_errors(bio_err); return 0; } } #endif if (!SSL_CONF_CTX_finish(cctx)) { BIO_puts(bio_err, "Error finishing context\n"); ERR_print_errors(bio_err); return 0; } return 1; } static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls) { X509_CRL *crl; int i; for (i = 0; i < sk_X509_CRL_num(crls); i++) { crl = sk_X509_CRL_value(crls, i); X509_STORE_add_crl(st, crl); } return 1; } int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download) { X509_STORE *st; st = SSL_CTX_get_cert_store(ctx); add_crls_store(st, crls); if (crl_download) store_setup_crl_download(st); return 1; } int ssl_load_stores(SSL_CTX *ctx, const char *vfyCApath, const char *vfyCAfile, const char *chCApath, const char *chCAfile, STACK_OF(X509_CRL) *crls, int crl_download) { X509_STORE *vfy = NULL, *ch = NULL; int rv = 0; if (vfyCApath || vfyCAfile) { vfy = X509_STORE_new(); if (!X509_STORE_load_locations(vfy, vfyCAfile, vfyCApath)) goto err; add_crls_store(vfy, crls); SSL_CTX_set1_verify_cert_store(ctx, vfy); if (crl_download) store_setup_crl_download(vfy); } if (chCApath || chCAfile) { ch = X509_STORE_new(); if (!X509_STORE_load_locations(ch, chCAfile, chCApath)) goto err; SSL_CTX_set1_chain_cert_store(ctx, ch); } rv = 1; err: X509_STORE_free(vfy); X509_STORE_free(ch); return rv; } /* Verbose print out of security callback */ typedef struct { BIO *out; int verbose; int (*old_cb) (SSL *s, SSL_CTX *ctx, int op, int bits, int nid, void *other, void *ex); } security_debug_ex; static STRINT_PAIR callback_types[] = { {"Supported Ciphersuite", SSL_SECOP_CIPHER_SUPPORTED}, {"Shared Ciphersuite", SSL_SECOP_CIPHER_SHARED}, {"Check Ciphersuite", SSL_SECOP_CIPHER_CHECK}, #ifndef OPENSSL_NO_DH {"Temp DH key bits", SSL_SECOP_TMP_DH}, #endif {"Supported Curve", SSL_SECOP_CURVE_SUPPORTED}, {"Shared Curve", SSL_SECOP_CURVE_SHARED}, {"Check Curve", SSL_SECOP_CURVE_CHECK}, {"Supported Signature Algorithm digest", SSL_SECOP_SIGALG_SUPPORTED}, {"Shared Signature Algorithm digest", SSL_SECOP_SIGALG_SHARED}, {"Check Signature Algorithm digest", SSL_SECOP_SIGALG_CHECK}, {"Signature Algorithm mask", SSL_SECOP_SIGALG_MASK}, {"Certificate chain EE key", SSL_SECOP_EE_KEY}, {"Certificate chain CA key", SSL_SECOP_CA_KEY}, {"Peer Chain EE key", SSL_SECOP_PEER_EE_KEY}, {"Peer Chain CA key", SSL_SECOP_PEER_CA_KEY}, {"Certificate chain CA digest", SSL_SECOP_CA_MD}, {"Peer chain CA digest", SSL_SECOP_PEER_CA_MD}, {"SSL compression", SSL_SECOP_COMPRESSION}, {"Session ticket", SSL_SECOP_TICKET}, {NULL} }; static int security_callback_debug(SSL *s, SSL_CTX *ctx, int op, int bits, int nid, void *other, void *ex) { security_debug_ex *sdb = ex; int rv, show_bits = 1, cert_md = 0; const char *nm; rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex); if (rv == 1 && sdb->verbose < 2) return 1; BIO_puts(sdb->out, "Security callback: "); nm = lookup(op, callback_types, NULL); switch (op) { case SSL_SECOP_TICKET: case SSL_SECOP_COMPRESSION: show_bits = 0; nm = NULL; break; case SSL_SECOP_VERSION: BIO_printf(sdb->out, "Version=%s", lookup(nid, ssl_versions, "???")); show_bits = 0; nm = NULL; break; case SSL_SECOP_CA_MD: case SSL_SECOP_PEER_CA_MD: cert_md = 1; break; } if (nm) BIO_printf(sdb->out, "%s=", nm); switch (op & SSL_SECOP_OTHER_TYPE) { case SSL_SECOP_OTHER_CIPHER: BIO_puts(sdb->out, SSL_CIPHER_get_name(other)); break; #ifndef OPENSSL_NO_EC case SSL_SECOP_OTHER_CURVE: { const char *cname; cname = EC_curve_nid2nist(nid); if (cname == NULL) cname = OBJ_nid2sn(nid); BIO_puts(sdb->out, cname); } break; #endif case SSL_SECOP_OTHER_DH: { DH *dh = other; BIO_printf(sdb->out, "%d", BN_num_bits(dh->p)); break; } case SSL_SECOP_OTHER_CERT: { if (cert_md) { int sig_nid = X509_get_signature_nid(other); BIO_puts(sdb->out, OBJ_nid2sn(sig_nid)); } else { EVP_PKEY *pkey = X509_get_pubkey(other); const char *algname = ""; EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL, &algname, EVP_PKEY_get0_asn1(pkey)); BIO_printf(sdb->out, "%s, bits=%d", algname, EVP_PKEY_bits(pkey)); EVP_PKEY_free(pkey); } break; } case SSL_SECOP_OTHER_SIGALG: { const unsigned char *salg = other; const char *sname = NULL; switch (salg[1]) { case TLSEXT_signature_anonymous: sname = "anonymous"; break; case TLSEXT_signature_rsa: sname = "RSA"; break; case TLSEXT_signature_dsa: sname = "DSA"; break; case TLSEXT_signature_ecdsa: sname = "ECDSA"; break; } BIO_puts(sdb->out, OBJ_nid2sn(nid)); if (sname) BIO_printf(sdb->out, ", algorithm=%s", sname); else BIO_printf(sdb->out, ", algid=%d", salg[1]); break; } } if (show_bits) BIO_printf(sdb->out, ", security bits=%d", bits); BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no"); return rv; } void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose) { static security_debug_ex sdb; sdb.out = bio_err; sdb.verbose = verbose; sdb.old_cb = SSL_CTX_get_security_callback(ctx); SSL_CTX_set_security_callback(ctx, security_callback_debug); SSL_CTX_set0_security_ex_data(ctx, &sdb); }