+static const char *ssl_version_str(int version)
+ {
+ switch (version)
+ {
+ case SSL2_VERSION:
+ return "SSL 2.0";
+ case SSL3_VERSION:
+ return "SSL 3.0";
+ case TLS1_VERSION:
+ return "TLS 1.0";
+ case TLS1_1_VERSION:
+ return "TLS 1.1";
+ case TLS1_2_VERSION:
+ return "TLS 1.2";
+ case DTLS1_VERSION:
+ return "DTLS 1.0";
+ case DTLS1_BAD_VER:
+ return "DTLS 1.0 (bad)";
+ default:
+ return "???";
+ }
+ }
+
+void MS_CALLBACK 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, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
+
+ str_write_p = write_p ? ">>>" : "<<<";
+
+ str_version = ssl_version_str(version);
+
+ if (version == SSL2_VERSION)
+ {
+ str_details1 = "???";
+
+ if (len > 0)
+ {
+ switch (((const unsigned char*)buf)[0])
+ {
+ case 0:
+ str_details1 = ", ERROR:";
+ str_details2 = " ???";
+ if (len >= 3)
+ {
+ unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
+
+ switch (err)
+ {
+ case 0x0001:
+ str_details2 = " NO-CIPHER-ERROR";
+ break;
+ case 0x0002:
+ str_details2 = " NO-CERTIFICATE-ERROR";
+ break;
+ case 0x0004:
+ str_details2 = " BAD-CERTIFICATE-ERROR";
+ break;
+ case 0x0006:
+ str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
+ break;
+ }
+ }
+
+ break;
+ case 1:
+ str_details1 = ", CLIENT-HELLO";
+ break;
+ case 2:
+ str_details1 = ", CLIENT-MASTER-KEY";
+ break;
+ case 3:
+ str_details1 = ", CLIENT-FINISHED";
+ break;
+ case 4:
+ str_details1 = ", SERVER-HELLO";
+ break;
+ case 5:
+ str_details1 = ", SERVER-VERIFY";
+ break;
+ case 6:
+ str_details1 = ", SERVER-FINISHED";
+ break;
+ case 7:
+ str_details1 = ", REQUEST-CERTIFICATE";
+ break;
+ case 8:
+ str_details1 = ", CLIENT-CERTIFICATE";
+ break;
+ }
+ }
+ }
+
+ 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";
+ break;
+ case 22:
+ str_content_type = "Handshake";
+ break;
+ }
+
+ if (content_type == 21) /* Alert */
+ {
+ str_details1 = ", ???";
+
+ if (len == 2)
+ {
+ switch (((const unsigned char*)buf)[0])
+ {
+ case 1:
+ str_details1 = ", warning";
+ break;
+ case 2:
+ str_details1 = ", fatal";
+ break;
+ }
+
+ str_details2 = " ???";
+ switch (((const unsigned char*)buf)[1])
+ {
+ case 0:
+ str_details2 = " close_notify";
+ break;
+ case 10:
+ str_details2 = " unexpected_message";
+ break;
+ case 20:
+ str_details2 = " bad_record_mac";
+ break;
+ case 21:
+ str_details2 = " decryption_failed";
+ break;
+ case 22:
+ str_details2 = " record_overflow";
+ break;
+ case 30:
+ str_details2 = " decompression_failure";
+ break;
+ case 40:
+ str_details2 = " handshake_failure";
+ break;
+ case 42:
+ str_details2 = " bad_certificate";
+ break;
+ case 43:
+ str_details2 = " unsupported_certificate";
+ break;
+ case 44:
+ str_details2 = " certificate_revoked";
+ break;
+ case 45:
+ str_details2 = " certificate_expired";
+ break;
+ case 46:
+ str_details2 = " certificate_unknown";
+ break;
+ case 47:
+ str_details2 = " illegal_parameter";
+ break;
+ case 48:
+ str_details2 = " unknown_ca";
+ break;
+ case 49:
+ str_details2 = " access_denied";
+ break;
+ case 50:
+ str_details2 = " decode_error";
+ break;
+ case 51:
+ str_details2 = " decrypt_error";
+ break;
+ case 60:
+ str_details2 = " export_restriction";
+ break;
+ case 70:
+ str_details2 = " protocol_version";
+ break;
+ case 71:
+ str_details2 = " insufficient_security";
+ break;
+ case 80:
+ str_details2 = " internal_error";
+ break;
+ case 90:
+ str_details2 = " user_canceled";
+ break;
+ case 100:
+ str_details2 = " no_renegotiation";
+ break;
+ case 110:
+ str_details2 = " unsupported_extension";
+ break;
+ case 111:
+ str_details2 = " certificate_unobtainable";
+ break;
+ case 112:
+ str_details2 = " unrecognized_name";
+ break;
+ case 113:
+ str_details2 = " bad_certificate_status_response";
+ break;
+ case 114:
+ str_details2 = " bad_certificate_hash_value";
+ break;
+ case 115:
+ str_details2 = " unknown_psk_identity";
+ break;
+ }
+ }
+ }
+
+ if (content_type == 22) /* Handshake */
+ {
+ str_details1 = "???";
+
+ if (len > 0)
+ {
+ switch (((const unsigned char*)buf)[0])
+ {
+ case 0:
+ str_details1 = ", HelloRequest";
+ break;
+ case 1:
+ str_details1 = ", ClientHello";
+ break;
+ case 2:
+ str_details1 = ", ServerHello";
+ break;
+ case 3:
+ str_details1 = ", HelloVerifyRequest";
+ break;
+ case 11:
+ str_details1 = ", Certificate";
+ break;
+ case 12:
+ str_details1 = ", ServerKeyExchange";
+ break;
+ case 13:
+ str_details1 = ", CertificateRequest";
+ break;
+ case 14:
+ str_details1 = ", ServerHelloDone";
+ break;
+ case 15:
+ str_details1 = ", CertificateVerify";
+ break;
+ case 16:
+ str_details1 = ", ClientKeyExchange";
+ break;
+ case 20:
+ str_details1 = ", Finished";
+ break;
+ case 23:
+ str_details1 = ", SupplementalData";
+ break;
+ }
+ }
+ }
+
+#ifndef OPENSSL_NO_HEARTBEATS
+ if (content_type == 24) /* Heartbeat */
+ {
+ str_details1 = ", Heartbeat";
+
+ if (len > 0)
+ {
+ switch (((const unsigned char*)buf)[0])
+ {
+ case 1:
+ str_details1 = ", HeartbeatRequest";
+ break;
+ case 2:
+ str_details1 = ", HeartbeatResponse";
+ 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;
+#if 0
+ if (num > 16)
+ num = 16;
+#endif
+ 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);
+ }
+
+void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
+ unsigned char *data, int len,
+ void *arg)
+ {
+ BIO *bio = arg;
+ char *extname;
+
+ switch(type)
+ {
+ case TLSEXT_TYPE_server_name:
+ extname = "server name";
+ break;
+
+ case TLSEXT_TYPE_max_fragment_length:
+ extname = "max fragment length";
+ break;
+
+ case TLSEXT_TYPE_client_certificate_url:
+ extname = "client certificate URL";
+ break;
+
+ case TLSEXT_TYPE_trusted_ca_keys:
+ extname = "trusted CA keys";
+ break;
+
+ case TLSEXT_TYPE_truncated_hmac:
+ extname = "truncated HMAC";
+ break;
+
+ case TLSEXT_TYPE_status_request:
+ extname = "status request";
+ break;
+
+ case TLSEXT_TYPE_user_mapping:
+ extname = "user mapping";
+ break;
+
+ case TLSEXT_TYPE_client_authz:
+ extname = "client authz";
+ break;
+
+ case TLSEXT_TYPE_server_authz:
+ extname = "server authz";
+ break;
+
+ case TLSEXT_TYPE_cert_type:
+ extname = "cert type";
+ break;
+
+ case TLSEXT_TYPE_elliptic_curves:
+ extname = "elliptic curves";
+ break;
+
+ case TLSEXT_TYPE_ec_point_formats:
+ extname = "EC point formats";
+ break;
+
+ case TLSEXT_TYPE_srp:
+ extname = "SRP";
+ break;
+
+ case TLSEXT_TYPE_signature_algorithms:
+ extname = "signature algorithms";
+ break;
+
+ case TLSEXT_TYPE_use_srtp:
+ extname = "use SRTP";
+ break;
+
+ case TLSEXT_TYPE_heartbeat:
+ extname = "heartbeat";
+ break;
+
+ case TLSEXT_TYPE_session_ticket:
+ extname = "session ticket";
+ break;
+
+ case TLSEXT_TYPE_renegotiate:
+ extname = "renegotiation info";
+ break;
+
+#ifdef TLSEXT_TYPE_opaque_prf_input
+ case TLSEXT_TYPE_opaque_prf_input:
+ extname = "opaque PRF input";
+ break;
+#endif
+#ifdef TLSEXT_TYPE_next_proto_neg
+ case TLSEXT_TYPE_next_proto_neg:
+ extname = "next protocol";
+ break;
+#endif
+#ifdef TLSEXT_TYPE_encrypt_then_mac
+ case TLSEXT_TYPE_encrypt_then_mac:
+ extname = "encrypt-then-mac";
+ break;
+#endif
+
+ default:
+ extname = "unknown";
+ break;
+
+ }
+
+ 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 MS_CALLBACK 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))
+ {
+ 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 = OPENSSL_malloc(length);
+
+ if (buffer == NULL)
+ {
+ BIO_printf(bio_err,"out of memory\n");
+ return 0;
+ }
+
+ 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 MS_CALLBACK 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 = OPENSSL_malloc(length);
+
+ if (buffer == NULL)
+ {
+ BIO_printf(bio_err,"out of memory\n");
+ return 0;
+ }
+
+ 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;
+ };
+
+struct chain_flags
+ {
+ int flag;
+ const char *name;
+ };
+
+struct chain_flags chain_flags_list[] =
+ {
+ {CERT_PKEY_VALID, "Overall Validity"},
+ {CERT_PKEY_SIGN, "Sign with EE key"},
+ {CERT_PKEY_EE_SIGNATURE, "EE signature"},
+ {CERT_PKEY_CA_SIGNATURE, "CA signature"},
+ {CERT_PKEY_EE_PARAM, "EE key parameters"},
+ {CERT_PKEY_CA_PARAM, "CA key parameters"},
+ {CERT_PKEY_EXPLICIT_SIGN, "Explicity sign with EE key"},
+ {CERT_PKEY_ISSUER_NAME, "Issuer Name"},
+ {CERT_PKEY_CERT_TYPE, "Certificate Type"},
+ {0, NULL}
+ };
+
+
+static void print_chain_flags(BIO *out, int flags)
+ {
+ struct chain_flags *ctmp = chain_flags_list;
+ while(ctmp->name)
+ {
+ BIO_printf(out, "\t%s: %s\n", ctmp->name,
+ flags & ctmp->flag ? "OK" : "NOT OK");
+ ctmp++;
+ }
+ }
+
+/* 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++;
+ fprintf(stderr, "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(bio_err, rv);
+ if (rv & CERT_PKEY_VALID)
+ {
+ SSL_use_certificate(ssl, exc->cert);
+ SSL_use_PrivateKey(ssl, exc->key);
+ /* 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;
+ exc = OPENSSL_malloc(sizeof(SSL_EXCERT));
+ if (!exc)
+ return 0;
+ exc->certfile = NULL;
+ exc->keyfile = NULL;
+ exc->chainfile = NULL;
+ exc->cert = NULL;
+ exc->key = NULL;
+ exc->chain = NULL;
+ exc->prev = NULL;
+ exc->build_chain = 0;
+
+ 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;
+ while (exc)
+ {
+ if (exc->cert)
+ X509_free(exc->cert);
+ if (exc->key)
+ EVP_PKEY_free(exc->key);
+ if (exc->chain)
+ sk_X509_pop_free(exc->chain, X509_free);
+ curr = exc;
+ exc = exc->next;
+ OPENSSL_free(curr);
+ }
+ }
+
+int load_excert(SSL_EXCERT **pexc, BIO *err)
+ {
+ 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(err, "Missing filename\n");
+ return 0;
+ }
+ exc->cert = load_cert(err, exc->certfile, exc->certform,
+ NULL, NULL, "Server Certificate");
+ if (!exc->cert)
+ return 0;
+ if (exc->keyfile)
+ exc->keyfile = exc->certfile;
+ exc->key = load_key(err, exc->certfile, exc->certform, 0,
+ NULL, NULL, "Server Certificate");
+ if (!exc->key)
+ return 0;
+ if (exc->chainfile)
+ {
+ exc->chain = load_certs(err,
+ exc->chainfile, FORMAT_PEM,
+ NULL, NULL,
+ "Server Chain");
+ if (!exc->chainfile)
+ return 0;
+ }
+ }
+ return 1;
+ }
+
+
+int args_excert(char ***pargs, int *pargc,
+ int *badarg, BIO *err, SSL_EXCERT **pexc)
+ {
+ char *arg = **pargs, *argn = (*pargs)[1];
+ SSL_EXCERT *exc = *pexc;
+ int narg = 2;
+ if (!exc)
+ {
+ if (ssl_excert_prepend(&exc))
+ *pexc = exc;
+ else
+ {
+ BIO_printf(err, "Error initialising xcert\n");
+ *badarg = 1;
+ goto err;
+ }
+ }
+ if (strcmp(arg, "-xcert") == 0)
+ {
+ if (!argn)
+ {
+ *badarg = 1;
+ return 1;
+ }
+ if (exc->certfile && !ssl_excert_prepend(&exc))
+ {
+ BIO_printf(err, "Error adding xcert\n");
+ *badarg = 1;
+ goto err;
+ }
+ exc->certfile = argn;
+ }
+ else if (strcmp(arg,"-xkey") == 0)
+ {
+ if (!argn)
+ {
+ *badarg = 1;
+ return 1;
+ }
+ if (exc->keyfile)
+ {
+ BIO_printf(err, "Key already specified\n");
+ *badarg = 1;
+ return 1;
+ }
+ exc->keyfile = argn;
+ }
+ else if (strcmp(arg,"-xchain") == 0)
+ {
+ if (!argn)
+ {
+ *badarg = 1;
+ return 1;
+ }
+ if (exc->chainfile)
+ {
+ BIO_printf(err, "Chain already specified\n");
+ *badarg = 1;
+ return 1;
+ }
+ exc->chainfile = argn;
+ }
+ else if (strcmp(arg,"-xchain_build") == 0)
+ {
+ narg = 1;
+ exc->build_chain = 1;
+ }
+ else if (strcmp(arg,"-xcertform") == 0)
+ {
+ if (!argn)
+ {
+ *badarg = 1;
+ goto err;
+ }
+ exc->certform = str2fmt(argn);
+ }
+ else if (strcmp(arg,"-xkeyform") == 0)
+ {
+ if (!argn)
+ {
+ *badarg = 1;
+ goto err;
+ }
+ exc->keyform = str2fmt(argn);
+ }
+ else
+ return 0;
+
+ (*pargs) += narg;
+
+ if (pargc)
+ *pargc -= narg;
+
+ *pexc = exc;
+
+ return 1;
+
+ err:
+ ERR_print_errors(err);
+ ssl_excert_free(exc);
+ *pexc = NULL;
+ return 1;
+ }
+
+static void print_raw_cipherlist(BIO *bio, 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, "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, ":");
+ if (c)
+ BIO_puts(bio, SSL_CIPHER_get_name(c));
+ else if (!memcmp(rlist, scsv_id - num + 3, num))
+ BIO_puts(bio, "SCSV");
+ else
+ {
+ size_t j;
+ BIO_puts(bio, "0x");
+ for (j = 0; j < num; j++)
+ BIO_printf(bio, "%02X", rlist[j]);
+ }
+ }
+ BIO_puts(bio, "\n");
+ }
+
+
+void print_ssl_summary(BIO *bio, SSL *s)
+ {
+ const SSL_CIPHER *c;
+ X509 *peer;
+ /*const char *pnam = SSL_is_server(s) ? "client" : "server";*/
+ BIO_printf(bio, "Protocol version: %s\n", SSL_get_version(s));
+ print_raw_cipherlist(bio, s);
+ c = SSL_get_current_cipher(s);
+ BIO_printf(bio,"Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
+ do_print_sigalgs(bio, s, 0);
+ peer = SSL_get_peer_certificate(s);
+ if (peer)
+ {
+ int nid;
+ BIO_puts(bio, "Peer certificate: ");
+ X509_NAME_print_ex(bio, X509_get_subject_name(peer),
+ 0, XN_FLAG_ONELINE);
+ BIO_puts(bio, "\n");
+ if (SSL_get_peer_signature_nid(s, &nid))
+ BIO_printf(bio, "Hash used: %s\n", OBJ_nid2sn(nid));
+ }
+ else
+ BIO_puts(bio, "No peer certificate\n");
+ if (peer)
+ X509_free(peer);
+#ifndef OPENSSL_NO_EC
+ ssl_print_point_formats(bio, s);
+ if (SSL_is_server(s))
+ ssl_print_curves(bio, s, 1);
+ else
+ ssl_print_tmp_key(bio, s);
+#else
+ if (!SSL_is_server(s))
+ ssl_print_tmp_key(bio, s);
+#endif
+ }
+
+int args_ssl(char ***pargs, int *pargc, SSL_CONF_CTX *cctx,
+ int *badarg, BIO *err, STACK_OF(OPENSSL_STRING) **pstr)
+ {
+ char *arg = **pargs, *argn = (*pargs)[1];
+ int rv;
+
+ /* Attempt to run SSL configuration command */
+ rv = SSL_CONF_cmd_argv(cctx, pargc, pargs);
+ /* If parameter not recognised just return */
+ if (rv == 0)
+ return 0;
+ /* see if missing argument error */
+ if (rv == -3)
+ {
+ BIO_printf(err, "%s needs an argument\n", arg);
+ *badarg = 1;
+ goto end;
+ }
+ /* Check for some other error */
+ if (rv < 0)
+ {
+ BIO_printf(err, "Error with command: \"%s %s\"\n",
+ arg, argn ? argn : "");
+ *badarg = 1;
+ goto end;
+ }
+ /* Store command and argument */
+ /* If only one argument processed store value as NULL */
+ if (rv == 1)
+ argn = NULL;
+ if (!*pstr)
+ *pstr = sk_OPENSSL_STRING_new_null();
+ if (!*pstr || !sk_OPENSSL_STRING_push(*pstr, arg) ||
+ !sk_OPENSSL_STRING_push(*pstr, argn))
+ {
+ BIO_puts(err, "Memory allocation failure\n");
+ goto end;
+ }
+
+ end:
+ if (*badarg)
+ ERR_print_errors(err);
+
+ return 1;
+ }
+
+int args_ssl_call(SSL_CTX *ctx, BIO *err, SSL_CONF_CTX *cctx,
+ STACK_OF(OPENSSL_STRING) *str, 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 *param = sk_OPENSSL_STRING_value(str, i);
+ const char *value = sk_OPENSSL_STRING_value(str, i + 1);
+ /* If no_ecdhe or named curve already specified don't need
+ * a default.
+ */
+ if (!no_ecdhe && !strcmp(param, "-named_curve"))
+ no_ecdhe = 1;
+#ifndef OPENSSL_NO_JPAKE
+ if (!no_jpake && !strcmp(param, "-cipher"))
+ {
+ BIO_puts(err, "JPAKE sets cipher to PSK\n");
+ return 0;
+ }
+#endif
+ if (SSL_CONF_cmd(cctx, param, value) <= 0)
+ {
+ BIO_printf(err, "Error with command: \"%s %s\"\n",
+ param, value ? value : "");
+ ERR_print_errors(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(err, "Error setting EC curve\n");
+ ERR_print_errors(err);
+ return 0;
+ }
+ }
+#ifndef OPENSSL_NO_JPAKE
+ if (!no_jpake)
+ {
+ if (SSL_CONF_cmd(cctx, "-cipher", "PSK") <= 0)
+ {
+ BIO_puts(err, "Error setting cipher to PSK\n");
+ ERR_print_errors(err);
+ return 0;
+ }
+ }
+#endif
+ if (!SSL_CONF_CTX_finish(cctx))
+ {
+ BIO_puts(err, "Error finishing context\n");
+ ERR_print_errors(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:
+ if (vfy)
+ X509_STORE_free(vfy);
+ if (ch)
+ 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 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: ");
+
+ switch (op)
+ {
+ case SSL_SECOP_CIPHER_SUPPORTED:
+ nm = "Supported Ciphersuite";
+ break;
+ case SSL_SECOP_CIPHER_SHARED:
+ nm = "Shared Ciphersuite";
+ break;
+ case SSL_SECOP_CIPHER_CHECK:
+ nm = "Check Ciphersuite";
+ break;
+ case SSL_SECOP_TICKET:
+ BIO_puts(sdb->out, "Session ticket");
+ show_bits = 0;
+ nm = NULL;
+ break;
+ case SSL_SECOP_COMPRESSION:
+ BIO_puts(sdb->out, "SSL compression");
+ show_bits = 0;
+ nm = NULL;
+ break;
+#ifndef OPENSSL_NO_DH
+ case SSL_SECOP_TMP_DH:
+ nm = "Temp DH key bits";
+ break;
+#endif
+ case SSL_SECOP_CURVE_SUPPORTED:
+ nm = "Supported Curve";
+ break;
+ case SSL_SECOP_CURVE_SHARED:
+ nm = "Shared Curve";
+ break;
+ case SSL_SECOP_CURVE_CHECK:
+ nm = "Check Curve";
+ break;
+ case SSL_SECOP_SSL2_COMPAT:
+ BIO_puts(sdb->out, "SSLv2 compatible");
+ show_bits = 0;
+ nm = NULL;
+ break;
+ case SSL_SECOP_VERSION:
+ BIO_printf(sdb->out, "Version=%s", ssl_version_str(nid));
+ show_bits = 0;
+ nm = NULL;
+ break;
+ case SSL_SECOP_SIGALG_SUPPORTED:
+ nm = "Supported Signature Algorithm digest";
+ break;
+ case SSL_SECOP_SIGALG_SHARED:
+ nm = "Shared Signature Algorithm digest";
+ break;
+ case SSL_SECOP_SIGALG_CHECK:
+ nm = "Check Signature Algorithm digest";
+ break;
+ case SSL_SECOP_SIGALG_MASK:
+ nm = "Signature Algorithm mask";
+ break;
+ case SSL_SECOP_EE_KEY:
+ nm = "Certificate chain EE key";
+ break;
+ case SSL_SECOP_CA_KEY:
+ nm = "Certificate chain CA key";
+ break;
+ case SSL_SECOP_CA_MD:
+ cert_md = 1;
+ nm = "Certificate chain CA digest";
+ break;
+ case SSL_SECOP_PEER_EE_KEY:
+ nm = "Peer Chain EE key";
+ break;
+ case SSL_SECOP_PEER_CA_KEY:
+ nm = "Peer Chain CA key";
+ break;
+ case SSL_SECOP_PEER_CA_MD:
+ cert_md = 1;
+ nm = "Peer chain CA digest";
+ break;
+ default:
+ nm = NULL;
+ }
+ 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;
+
+ 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;
+
+ 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, BIO *out, int verbose)
+ {
+ static security_debug_ex sdb;
+ sdb.out = out;
+ 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);
+ }
+
+
+