| /* apps/s_cb.c - callback functions used by s_client, s_server, and s_time */ |
| /* 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). |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> /* for memcpy() */ |
| #define USE_SOCKETS |
| #define NON_MAIN |
| #include "apps.h" |
| #undef NON_MAIN |
| #undef USE_SOCKETS |
| #include <openssl/err.h> |
| #include <openssl/rand.h> |
| #include <openssl/x509.h> |
| #include <openssl/ssl.h> |
| #include "s_apps.h" |
| |
| #define COOKIE_SECRET_LENGTH 16 |
| |
| int verify_depth = 0; |
| int verify_error = X509_V_OK; |
| int verify_return_error = 0; |
| unsigned char cookie_secret[COOKIE_SECRET_LENGTH]; |
| int cookie_initialized = 0; |
| |
| int MS_CALLBACK 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); |
| |
| 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, "<no cert>\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: |
| policies_print(bio_err, ctx); |
| break; |
| } |
| if (err == X509_V_OK && ok == 2) |
| policies_print(bio_err, ctx); |
| |
| 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) { |
| /*- |
| SSL *ssl; |
| X509 *x509; |
| */ |
| |
| 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); |
| } |
| |
| /*- |
| In theory this is no longer needed |
| ssl=SSL_new(ctx); |
| x509=SSL_get_certificate(ssl); |
| |
| if (x509 != NULL) { |
| EVP_PKEY *pktmp; |
| pktmp = X509_get_pubkey(x509); |
| EVP_PKEY_copy_parameters(pktmp, |
| SSL_get_privatekey(ssl)); |
| EVP_PKEY_free(pktmp); |
| } |
| SSL_free(ssl); |
| */ |
| |
| /* |
| * 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) |
| { |
| 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; |
| } |
| return 1; |
| } |
| |
| long MS_CALLBACK 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 MS_CALLBACK 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)); |
| } |
| } |
| } |
| |
| 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 ? ">>>" : "<<<"; |
| |
| switch (version) { |
| case SSL2_VERSION: |
| str_version = "SSL 2.0"; |
| break; |
| case SSL3_VERSION: |
| str_version = "SSL 3.0 "; |
| break; |
| case TLS1_VERSION: |
| str_version = "TLS 1.0 "; |
| break; |
| case TLS1_1_VERSION: |
| str_version = "TLS 1.1 "; |
| break; |
| case TLS1_2_VERSION: |
| str_version = "TLS 1.2 "; |
| break; |
| case DTLS1_VERSION: |
| str_version = "DTLS 1.0 "; |
| break; |
| case DTLS1_BAD_VER: |
| str_version = "DTLS 1.0 (bad) "; |
| break; |
| default: |
| 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; |
| } |
| } |
| } |
| #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 |
| |
| case TLSEXT_TYPE_padding: |
| extname = "TLS padding"; |
| break; |
| |
| 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) <= 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 = 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; |
| } |
