/* $OpenBSD: ssl_both.c,v 1.44 2022/10/02 16:36:41 jsing Exp $ */ /* 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) 1998-2002 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. */ #include #include #include #include #include #include #include #include "bytestring.h" #include "dtls_locl.h" #include "ssl_locl.h" /* * Send s->init_buf in records of type 'type' (SSL3_RT_HANDSHAKE or * SSL3_RT_CHANGE_CIPHER_SPEC). */ int ssl3_do_write(SSL *s, int type) { int ret; ret = ssl3_write_bytes(s, type, &s->init_buf->data[s->init_off], s->init_num); if (ret < 0) return (-1); if (type == SSL3_RT_HANDSHAKE) /* * Should not be done for 'Hello Request's, but in that case * we'll ignore the result anyway. */ tls1_transcript_record(s, (unsigned char *)&s->init_buf->data[s->init_off], ret); if (ret == s->init_num) { ssl_msg_callback(s, 1, type, s->init_buf->data, (size_t)(s->init_off + s->init_num)); return (1); } s->init_off += ret; s->init_num -= ret; return (0); } static int ssl3_add_cert(CBB *cbb, X509 *x) { unsigned char *data; int cert_len; int ret = 0; CBB cert; if ((cert_len = i2d_X509(x, NULL)) < 0) goto err; if (!CBB_add_u24_length_prefixed(cbb, &cert)) goto err; if (!CBB_add_space(&cert, &data, cert_len)) goto err; if (i2d_X509(x, &data) < 0) goto err; if (!CBB_flush(cbb)) goto err; ret = 1; err: return (ret); } int ssl3_output_cert_chain(SSL *s, CBB *cbb, SSL_CERT_PKEY *cpk) { X509_STORE_CTX *xs_ctx = NULL; STACK_OF(X509) *chain; CBB cert_list; X509 *x; int ret = 0; int i; if (!CBB_add_u24_length_prefixed(cbb, &cert_list)) goto err; /* Send an empty certificate list when no certificate is available. */ if (cpk == NULL) goto done; if ((chain = cpk->chain) == NULL) chain = s->ctx->extra_certs; if (chain != NULL || (s->mode & SSL_MODE_NO_AUTO_CHAIN)) { if (!ssl3_add_cert(&cert_list, cpk->x509)) goto err; } else { if ((xs_ctx = X509_STORE_CTX_new()) == NULL) goto err; if (!X509_STORE_CTX_init(xs_ctx, s->ctx->cert_store, cpk->x509, NULL)) { SSLerror(s, ERR_R_X509_LIB); goto err; } X509_VERIFY_PARAM_set_flags(X509_STORE_CTX_get0_param(xs_ctx), X509_V_FLAG_LEGACY_VERIFY); X509_verify_cert(xs_ctx); ERR_clear_error(); chain = X509_STORE_CTX_get0_chain(xs_ctx); } for (i = 0; i < sk_X509_num(chain); i++) { x = sk_X509_value(chain, i); if (!ssl3_add_cert(&cert_list, x)) goto err; } done: if (!CBB_flush(cbb)) goto err; ret = 1; err: X509_STORE_CTX_free(xs_ctx); return (ret); } /* * Obtain handshake message of message type 'mt' (any if mt == -1), * maximum acceptable body length 'max'. * The first four bytes (msg_type and length) are read in state 'st1', * the body is read in state 'stn'. */ int ssl3_get_message(SSL *s, int st1, int stn, int mt, long max) { unsigned char *p; uint32_t l; long n; int i, al; CBS cbs; uint8_t u8; if (SSL_is_dtls(s)) return dtls1_get_message(s, st1, stn, mt, max); if (s->s3->hs.tls12.reuse_message) { s->s3->hs.tls12.reuse_message = 0; if ((mt >= 0) && (s->s3->hs.tls12.message_type != mt)) { al = SSL_AD_UNEXPECTED_MESSAGE; SSLerror(s, SSL_R_UNEXPECTED_MESSAGE); goto fatal_err; } s->init_msg = s->init_buf->data + SSL3_HM_HEADER_LENGTH; s->init_num = (int)s->s3->hs.tls12.message_size; return 1; } p = (unsigned char *)s->init_buf->data; if (s->s3->hs.state == st1) { int skip_message; do { while (s->init_num < SSL3_HM_HEADER_LENGTH) { i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE, &p[s->init_num], SSL3_HM_HEADER_LENGTH - s->init_num, 0); if (i <= 0) { s->rwstate = SSL_READING; return i; } s->init_num += i; } skip_message = 0; if (!s->server && p[0] == SSL3_MT_HELLO_REQUEST) { /* * The server may always send 'Hello Request' * messages -- we are doing a handshake anyway * now, so ignore them if their format is * correct. Does not count for 'Finished' MAC. */ if (p[1] == 0 && p[2] == 0 &&p[3] == 0) { s->init_num = 0; skip_message = 1; ssl_msg_callback(s, 0, SSL3_RT_HANDSHAKE, p, SSL3_HM_HEADER_LENGTH); } } } while (skip_message); if ((mt >= 0) && (*p != mt)) { al = SSL_AD_UNEXPECTED_MESSAGE; SSLerror(s, SSL_R_UNEXPECTED_MESSAGE); goto fatal_err; } CBS_init(&cbs, p, SSL3_HM_HEADER_LENGTH); if (!CBS_get_u8(&cbs, &u8) || !CBS_get_u24(&cbs, &l)) { SSLerror(s, ERR_R_BUF_LIB); goto err; } s->s3->hs.tls12.message_type = u8; if (l > (unsigned long)max) { al = SSL_AD_ILLEGAL_PARAMETER; SSLerror(s, SSL_R_EXCESSIVE_MESSAGE_SIZE); goto fatal_err; } if (l && !BUF_MEM_grow_clean(s->init_buf, l + SSL3_HM_HEADER_LENGTH)) { SSLerror(s, ERR_R_BUF_LIB); goto err; } s->s3->hs.tls12.message_size = l; s->s3->hs.state = stn; s->init_msg = s->init_buf->data + SSL3_HM_HEADER_LENGTH; s->init_num = 0; } /* next state (stn) */ p = s->init_msg; n = s->s3->hs.tls12.message_size - s->init_num; while (n > 0) { i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE, &p[s->init_num], n, 0); if (i <= 0) { s->rwstate = SSL_READING; return i; } s->init_num += i; n -= i; } /* Feed this message into MAC computation. */ if (s->mac_packet) { tls1_transcript_record(s, (unsigned char *)s->init_buf->data, s->init_num + SSL3_HM_HEADER_LENGTH); ssl_msg_callback(s, 0, SSL3_RT_HANDSHAKE, s->init_buf->data, (size_t)s->init_num + SSL3_HM_HEADER_LENGTH); } return 1; fatal_err: ssl3_send_alert(s, SSL3_AL_FATAL, al); err: return -1; } int ssl_cert_type(EVP_PKEY *pkey) { if (pkey == NULL) return -1; switch (EVP_PKEY_id(pkey)) { case EVP_PKEY_EC: return SSL_PKEY_ECC; case NID_id_GostR3410_2001: case NID_id_GostR3410_2001_cc: return SSL_PKEY_GOST01; case EVP_PKEY_RSA: return SSL_PKEY_RSA; } return -1; } int ssl_verify_alarm_type(long type) { int al; switch (type) { case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: case X509_V_ERR_UNABLE_TO_GET_CRL: case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER: al = SSL_AD_UNKNOWN_CA; break; case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE: case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY: case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD: case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: case X509_V_ERR_CERT_NOT_YET_VALID: case X509_V_ERR_CRL_NOT_YET_VALID: case X509_V_ERR_CERT_UNTRUSTED: case X509_V_ERR_CERT_REJECTED: al = SSL_AD_BAD_CERTIFICATE; break; case X509_V_ERR_CERT_SIGNATURE_FAILURE: case X509_V_ERR_CRL_SIGNATURE_FAILURE: al = SSL_AD_DECRYPT_ERROR; break; case X509_V_ERR_CERT_HAS_EXPIRED: case X509_V_ERR_CRL_HAS_EXPIRED: al = SSL_AD_CERTIFICATE_EXPIRED; break; case X509_V_ERR_CERT_REVOKED: al = SSL_AD_CERTIFICATE_REVOKED; break; case X509_V_ERR_OUT_OF_MEM: al = SSL_AD_INTERNAL_ERROR; break; case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN: case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: case X509_V_ERR_CERT_CHAIN_TOO_LONG: case X509_V_ERR_PATH_LENGTH_EXCEEDED: case X509_V_ERR_INVALID_CA: al = SSL_AD_UNKNOWN_CA; break; case X509_V_ERR_APPLICATION_VERIFICATION: al = SSL_AD_HANDSHAKE_FAILURE; break; case X509_V_ERR_INVALID_PURPOSE: al = SSL_AD_UNSUPPORTED_CERTIFICATE; break; default: al = SSL_AD_CERTIFICATE_UNKNOWN; break; } return (al); } int ssl3_setup_init_buffer(SSL *s) { BUF_MEM *buf = NULL; if (s->init_buf != NULL) return (1); if ((buf = BUF_MEM_new()) == NULL) goto err; if (!BUF_MEM_grow(buf, SSL3_RT_MAX_PLAIN_LENGTH)) goto err; s->init_buf = buf; return (1); err: BUF_MEM_free(buf); return (0); } void ssl3_release_init_buffer(SSL *s) { BUF_MEM_free(s->init_buf); s->init_buf = NULL; s->init_msg = NULL; s->init_num = 0; s->init_off = 0; } int ssl3_setup_read_buffer(SSL *s) { unsigned char *p; size_t len, align, headerlen; if (SSL_is_dtls(s)) headerlen = DTLS1_RT_HEADER_LENGTH; else headerlen = SSL3_RT_HEADER_LENGTH; align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1); if (s->s3->rbuf.buf == NULL) { len = SSL3_RT_MAX_PLAIN_LENGTH + SSL3_RT_MAX_ENCRYPTED_OVERHEAD + headerlen + align; if ((p = calloc(1, len)) == NULL) goto err; s->s3->rbuf.buf = p; s->s3->rbuf.len = len; } s->packet = s->s3->rbuf.buf; return 1; err: SSLerror(s, ERR_R_MALLOC_FAILURE); return 0; } int ssl3_setup_write_buffer(SSL *s) { unsigned char *p; size_t len, align, headerlen; if (SSL_is_dtls(s)) headerlen = DTLS1_RT_HEADER_LENGTH + 1; else headerlen = SSL3_RT_HEADER_LENGTH; align = (-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1); if (s->s3->wbuf.buf == NULL) { len = s->max_send_fragment + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD + headerlen + align; if (!(s->options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS)) len += headerlen + align + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD; if ((p = calloc(1, len)) == NULL) goto err; s->s3->wbuf.buf = p; s->s3->wbuf.len = len; } return 1; err: SSLerror(s, ERR_R_MALLOC_FAILURE); return 0; } int ssl3_setup_buffers(SSL *s) { if (!ssl3_setup_read_buffer(s)) return 0; if (!ssl3_setup_write_buffer(s)) return 0; return 1; } void ssl3_release_buffer(SSL3_BUFFER_INTERNAL *b) { freezero(b->buf, b->len); b->buf = NULL; b->len = 0; } void ssl3_release_read_buffer(SSL *s) { ssl3_release_buffer(&s->s3->rbuf); } void ssl3_release_write_buffer(SSL *s) { ssl3_release_buffer(&s->s3->wbuf); }