/* ssl/ssl3.h */ /* 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. */ #ifndef HEADER_SSL3_H #define HEADER_SSL3_H #include #include #include #ifdef __cplusplus extern "C" { #endif /* Signalling cipher suite value: from draft-ietf-tls-renegotiation-03.txt */ #define SSL3_CK_SCSV 0x030000FF /* Fallback signalling cipher suite value: not IANA assigned. * See https://tools.ietf.org/html/draft-bmoeller-tls-downgrade-scsv-01 */ #define SSL3_CK_FALLBACK_SCSV 0x03005600 #define SSL3_CK_RSA_NULL_MD5 0x03000001 #define SSL3_CK_RSA_NULL_SHA 0x03000002 #define SSL3_CK_RSA_RC4_40_MD5 0x03000003 #define SSL3_CK_RSA_RC4_128_MD5 0x03000004 #define SSL3_CK_RSA_RC4_128_SHA 0x03000005 #define SSL3_CK_RSA_RC2_40_MD5 0x03000006 #define SSL3_CK_RSA_IDEA_128_SHA 0x03000007 #define SSL3_CK_RSA_DES_40_CBC_SHA 0x03000008 #define SSL3_CK_RSA_DES_64_CBC_SHA 0x03000009 #define SSL3_CK_RSA_DES_192_CBC3_SHA 0x0300000A #define SSL3_CK_DH_DSS_DES_40_CBC_SHA 0x0300000B #define SSL3_CK_DH_DSS_DES_64_CBC_SHA 0x0300000C #define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 0x0300000D #define SSL3_CK_DH_RSA_DES_40_CBC_SHA 0x0300000E #define SSL3_CK_DH_RSA_DES_64_CBC_SHA 0x0300000F #define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 0x03000010 #define SSL3_CK_EDH_DSS_DES_40_CBC_SHA 0x03000011 #define SSL3_CK_EDH_DSS_DES_64_CBC_SHA 0x03000012 #define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA 0x03000013 #define SSL3_CK_EDH_RSA_DES_40_CBC_SHA 0x03000014 #define SSL3_CK_EDH_RSA_DES_64_CBC_SHA 0x03000015 #define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA 0x03000016 #define SSL3_CK_ADH_RC4_40_MD5 0x03000017 #define SSL3_CK_ADH_RC4_128_MD5 0x03000018 #define SSL3_CK_ADH_DES_40_CBC_SHA 0x03000019 #define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A #define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B #if 0 #define SSL3_CK_FZA_DMS_NULL_SHA 0x0300001C #define SSL3_CK_FZA_DMS_FZA_SHA 0x0300001D #if 0 /* Because it clashes with KRB5, is never used any more, and is safe to remove according to David Hopwood of the ietf-tls list */ #define SSL3_CK_FZA_DMS_RC4_SHA 0x0300001E #endif #endif /* VRS Additional Kerberos5 entries */ #define SSL3_CK_KRB5_DES_64_CBC_SHA 0x0300001E #define SSL3_CK_KRB5_DES_192_CBC3_SHA 0x0300001F #define SSL3_CK_KRB5_RC4_128_SHA 0x03000020 #define SSL3_CK_KRB5_IDEA_128_CBC_SHA 0x03000021 #define SSL3_CK_KRB5_DES_64_CBC_MD5 0x03000022 #define SSL3_CK_KRB5_DES_192_CBC3_MD5 0x03000023 #define SSL3_CK_KRB5_RC4_128_MD5 0x03000024 #define SSL3_CK_KRB5_IDEA_128_CBC_MD5 0x03000025 #define SSL3_CK_KRB5_DES_40_CBC_SHA 0x03000026 #define SSL3_CK_KRB5_RC2_40_CBC_SHA 0x03000027 #define SSL3_CK_KRB5_RC4_40_SHA 0x03000028 #define SSL3_CK_KRB5_DES_40_CBC_MD5 0x03000029 #define SSL3_CK_KRB5_RC2_40_CBC_MD5 0x0300002A #define SSL3_CK_KRB5_RC4_40_MD5 0x0300002B #define SSL3_TXT_RSA_NULL_MD5 "NULL-MD5" #define SSL3_TXT_RSA_NULL_SHA "NULL-SHA" #define SSL3_TXT_RSA_RC4_40_MD5 "EXP-RC4-MD5" #define SSL3_TXT_RSA_RC4_128_MD5 "RC4-MD5" #define SSL3_TXT_RSA_RC4_128_SHA "RC4-SHA" #define SSL3_TXT_RSA_RC2_40_MD5 "EXP-RC2-CBC-MD5" #define SSL3_TXT_RSA_IDEA_128_SHA "IDEA-CBC-SHA" #define SSL3_TXT_RSA_DES_40_CBC_SHA "EXP-DES-CBC-SHA" #define SSL3_TXT_RSA_DES_64_CBC_SHA "DES-CBC-SHA" #define SSL3_TXT_RSA_DES_192_CBC3_SHA "DES-CBC3-SHA" #define SSL3_TXT_DH_DSS_DES_40_CBC_SHA "EXP-DH-DSS-DES-CBC-SHA" #define SSL3_TXT_DH_DSS_DES_64_CBC_SHA "DH-DSS-DES-CBC-SHA" #define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA "DH-DSS-DES-CBC3-SHA" #define SSL3_TXT_DH_RSA_DES_40_CBC_SHA "EXP-DH-RSA-DES-CBC-SHA" #define SSL3_TXT_DH_RSA_DES_64_CBC_SHA "DH-RSA-DES-CBC-SHA" #define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA "DH-RSA-DES-CBC3-SHA" #define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA "EXP-EDH-DSS-DES-CBC-SHA" #define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA "EDH-DSS-DES-CBC-SHA" #define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA "EDH-DSS-DES-CBC3-SHA" #define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA "EXP-EDH-RSA-DES-CBC-SHA" #define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA "EDH-RSA-DES-CBC-SHA" #define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA "EDH-RSA-DES-CBC3-SHA" #define SSL3_TXT_ADH_RC4_40_MD5 "EXP-ADH-RC4-MD5" #define SSL3_TXT_ADH_RC4_128_MD5 "ADH-RC4-MD5" #define SSL3_TXT_ADH_DES_40_CBC_SHA "EXP-ADH-DES-CBC-SHA" #define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA" #define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA" #if 0 #define SSL3_TXT_FZA_DMS_NULL_SHA "FZA-NULL-SHA" #define SSL3_TXT_FZA_DMS_FZA_SHA "FZA-FZA-CBC-SHA" #define SSL3_TXT_FZA_DMS_RC4_SHA "FZA-RC4-SHA" #endif #define SSL3_TXT_KRB5_DES_64_CBC_SHA "KRB5-DES-CBC-SHA" #define SSL3_TXT_KRB5_DES_192_CBC3_SHA "KRB5-DES-CBC3-SHA" #define SSL3_TXT_KRB5_RC4_128_SHA "KRB5-RC4-SHA" #define SSL3_TXT_KRB5_IDEA_128_CBC_SHA "KRB5-IDEA-CBC-SHA" #define SSL3_TXT_KRB5_DES_64_CBC_MD5 "KRB5-DES-CBC-MD5" #define SSL3_TXT_KRB5_DES_192_CBC3_MD5 "KRB5-DES-CBC3-MD5" #define SSL3_TXT_KRB5_RC4_128_MD5 "KRB5-RC4-MD5" #define SSL3_TXT_KRB5_IDEA_128_CBC_MD5 "KRB5-IDEA-CBC-MD5" #define SSL3_TXT_KRB5_DES_40_CBC_SHA "EXP-KRB5-DES-CBC-SHA" #define SSL3_TXT_KRB5_RC2_40_CBC_SHA "EXP-KRB5-RC2-CBC-SHA" #define SSL3_TXT_KRB5_RC4_40_SHA "EXP-KRB5-RC4-SHA" #define SSL3_TXT_KRB5_DES_40_CBC_MD5 "EXP-KRB5-DES-CBC-MD5" #define SSL3_TXT_KRB5_RC2_40_CBC_MD5 "EXP-KRB5-RC2-CBC-MD5" #define SSL3_TXT_KRB5_RC4_40_MD5 "EXP-KRB5-RC4-MD5" #define SSL3_SSL_SESSION_ID_LENGTH 32 #define SSL3_MAX_SSL_SESSION_ID_LENGTH 32 #define SSL3_MASTER_SECRET_SIZE 48 #define SSL3_RANDOM_SIZE 32 #define SSL3_SESSION_ID_SIZE 32 #define SSL3_RT_HEADER_LENGTH 5 #define SSL3_HM_HEADER_LENGTH 4 #ifndef SSL3_ALIGN_PAYLOAD /* Some will argue that this increases memory footprint, but it's * not actually true. Point is that malloc has to return at least * 64-bit aligned pointers, meaning that allocating 5 bytes wastes * 3 bytes in either case. Suggested pre-gaping simply moves these * wasted bytes from the end of allocated region to its front, * but makes data payload aligned, which improves performance:-) */ # define SSL3_ALIGN_PAYLOAD 8 #else # if (SSL3_ALIGN_PAYLOAD&(SSL3_ALIGN_PAYLOAD-1))!=0 # error "insane SSL3_ALIGN_PAYLOAD" # undef SSL3_ALIGN_PAYLOAD # endif #endif /* This is the maximum MAC (digest) size used by the SSL library. * Currently maximum of 20 is used by SHA1, but we reserve for * future extension for 512-bit hashes. */ #define SSL3_RT_MAX_MD_SIZE 64 /* Maximum block size used in all ciphersuites. Currently 16 for AES. */ #define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16 #define SSL3_RT_MAX_EXTRA (16384) /* Maximum plaintext length: defined by SSL/TLS standards */ #define SSL3_RT_MAX_PLAIN_LENGTH 16384 /* Maximum compression overhead: defined by SSL/TLS standards */ #define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024 /* The standards give a maximum encryption overhead of 1024 bytes. * In practice the value is lower than this. The overhead is the maximum * number of padding bytes (256) plus the mac size. */ #define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE) /* OpenSSL currently only uses a padding length of at most one block so * the send overhead is smaller. */ #define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \ (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE) /* If compression isn't used don't include the compression overhead */ #define SSL3_RT_MAX_COMPRESSED_LENGTH \ (SSL3_RT_MAX_PLAIN_LENGTH+SSL3_RT_MAX_COMPRESSED_OVERHEAD) #define SSL3_RT_MAX_ENCRYPTED_LENGTH \ (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH) #define SSL3_RT_MAX_PACKET_SIZE \ (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH) #define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54" #define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52" #define SSL3_VERSION 0x0300 #define SSL3_VERSION_MAJOR 0x03 #define SSL3_VERSION_MINOR 0x00 #define SSL3_RT_CHANGE_CIPHER_SPEC 20 #define SSL3_RT_ALERT 21 #define SSL3_RT_HANDSHAKE 22 #define SSL3_RT_APPLICATION_DATA 23 /* Pseudo content types to indicate additional parameters */ #define TLS1_RT_CRYPTO 0x1000 #define TLS1_RT_CRYPTO_PREMASTER (TLS1_RT_CRYPTO | 0x1) #define TLS1_RT_CRYPTO_CLIENT_RANDOM (TLS1_RT_CRYPTO | 0x2) #define TLS1_RT_CRYPTO_SERVER_RANDOM (TLS1_RT_CRYPTO | 0x3) #define TLS1_RT_CRYPTO_MASTER (TLS1_RT_CRYPTO | 0x4) #define TLS1_RT_CRYPTO_READ 0x0000 #define TLS1_RT_CRYPTO_WRITE 0x0100 #define TLS1_RT_CRYPTO_MAC (TLS1_RT_CRYPTO | 0x5) #define TLS1_RT_CRYPTO_KEY (TLS1_RT_CRYPTO | 0x6) #define TLS1_RT_CRYPTO_IV (TLS1_RT_CRYPTO | 0x7) #define TLS1_RT_CRYPTO_FIXED_IV (TLS1_RT_CRYPTO | 0x8) /* Pseudo content type for SSL/TLS header info */ #define SSL3_RT_HEADER 0x100 #define SSL3_AL_WARNING 1 #define SSL3_AL_FATAL 2 #define SSL3_AD_CLOSE_NOTIFY 0 #define SSL3_AD_UNEXPECTED_MESSAGE 10 /* fatal */ #define SSL3_AD_BAD_RECORD_MAC 20 /* fatal */ #define SSL3_AD_DECOMPRESSION_FAILURE 30 /* fatal */ #define SSL3_AD_HANDSHAKE_FAILURE 40 /* fatal */ #define SSL3_AD_NO_CERTIFICATE 41 #define SSL3_AD_BAD_CERTIFICATE 42 #define SSL3_AD_UNSUPPORTED_CERTIFICATE 43 #define SSL3_AD_CERTIFICATE_REVOKED 44 #define SSL3_AD_CERTIFICATE_EXPIRED 45 #define SSL3_AD_CERTIFICATE_UNKNOWN 46 #define SSL3_AD_ILLEGAL_PARAMETER 47 /* fatal */ #define SSL3_AD_INAPPROPRIATE_FALLBACK 86 /* fatal */ #ifndef OPENSSL_NO_SSL_INTERN typedef struct ssl3_record_st { /*r */ int type; /* type of record */ /*rw*/ unsigned int length; /* How many bytes available */ /*r */ unsigned int off; /* read/write offset into 'buf' */ /*rw*/ unsigned char *data; /* pointer to the record data */ /*rw*/ unsigned char *input; /* where the decode bytes are */ /*r */ unsigned long epoch; /* epoch number, needed by DTLS1 */ /*r */ unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */ } SSL3_RECORD; typedef struct ssl3_buffer_st { unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes, * see ssl3_setup_buffers() */ size_t len; /* buffer size */ int offset; /* where to 'copy from' */ int left; /* how many bytes left */ } SSL3_BUFFER; #endif #define SSL3_CT_RSA_SIGN 1 #define SSL3_CT_DSS_SIGN 2 #define SSL3_CT_RSA_FIXED_DH 3 #define SSL3_CT_DSS_FIXED_DH 4 #define SSL3_CT_RSA_EPHEMERAL_DH 5 #define SSL3_CT_DSS_EPHEMERAL_DH 6 #define SSL3_CT_FORTEZZA_DMS 20 #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS 0x0001 #define SSL3_FLAGS_DELAY_CLIENT_FINISHED 0x0002 #define SSL3_FLAGS_POP_BUFFER 0x0004 #define TLS1_FLAGS_TLS_PADDING_BUG 0x0008 #define TLS1_FLAGS_SKIP_CERT_VERIFY 0x0010 #define TLS1_FLAGS_KEEP_HANDSHAKE 0x0020 #define SSL3_FLAGS_CCS_OK 0x0080 /* SSL3_FLAGS_SGC_RESTART_DONE is set when we * restart a handshake because of MS SGC and so prevents us * from restarting the handshake in a loop. It's reset on a * renegotiation, so effectively limits the client to one restart * per negotiation. This limits the possibility of a DDoS * attack where the client handshakes in a loop using SGC to * restart. Servers which permit renegotiation can still be * effected, but we can't prevent that. */ #define SSL3_FLAGS_SGC_RESTART_DONE 0x0040 #ifndef OPENSSL_NO_SSL_INTERN typedef struct ssl3_state_st { long flags; int delay_buf_pop_ret; unsigned char read_sequence[8]; int read_mac_secret_size; unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; unsigned char write_sequence[8]; int write_mac_secret_size; unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; unsigned char server_random[SSL3_RANDOM_SIZE]; unsigned char client_random[SSL3_RANDOM_SIZE]; /* flags for countermeasure against known-IV weakness */ int need_record_splitting; int record_split_done; /* The value of 'extra' when the buffers were initialized */ int init_extra; SSL3_BUFFER rbuf; /* read IO goes into here */ SSL3_BUFFER wbuf; /* write IO goes into here */ SSL3_RECORD rrec; /* each decoded record goes in here */ SSL3_RECORD wrec; /* goes out from here */ /* storage for Alert/Handshake protocol data received but not * yet processed by ssl3_read_bytes: */ unsigned char alert_fragment[2]; unsigned int alert_fragment_len; unsigned char handshake_fragment[4]; unsigned int handshake_fragment_len; /* partial write - check the numbers match */ unsigned int wnum; /* number of bytes sent so far */ int wpend_tot; /* number bytes written */ int wpend_type; int wpend_ret; /* number of bytes submitted */ const unsigned char *wpend_buf; /* used during startup, digest all incoming/outgoing packets */ BIO *handshake_buffer; /* When set of handshake digests is determined, buffer is hashed * and freed and MD_CTX-es for all required digests are stored in * this array */ EVP_MD_CTX **handshake_dgst; /* this is set whenerver we see a change_cipher_spec message * come in when we are not looking for one */ int change_cipher_spec; int warn_alert; int fatal_alert; /* we allow one fatal and one warning alert to be outstanding, * send close alert via the warning alert */ int alert_dispatch; unsigned char send_alert[2]; /* This flag is set when we should renegotiate ASAP, basically when * there is no more data in the read or write buffers */ int renegotiate; int total_renegotiations; int num_renegotiations; int in_read_app_data; /* State pertaining to the pending handshake. * * TODO(davidben): State is current spread all over the place. Move * pending handshake state here so it can be managed separately from * established connection state in case of renegotiations. */ struct { /* actually only needs to be 16+20 */ unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2]; /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ unsigned char finish_md[EVP_MAX_MD_SIZE*2]; int finish_md_len; unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2]; int peer_finish_md_len; unsigned long message_size; int message_type; /* used to hold the new cipher we are going to use */ const SSL_CIPHER *new_cipher; #ifndef OPENSSL_NO_DH DH *dh; #endif #ifndef OPENSSL_NO_ECDH EC_KEY *ecdh; /* holds short lived ECDH key */ #endif /* used when SSL_ST_FLUSH_DATA is entered */ int next_state; int reuse_message; /* Client-only: cert_req determines if a client certificate is * to be sent. This is 0 if no client Certificate message is to * be sent, 1 if there is a client certificate, and 2 to send an * empty client Certificate message. */ int cert_req; /* Client-only: ca_names contains the list of CAs received in a * CertificateRequest message. */ STACK_OF(X509_NAME) *ca_names; /* Client-only: certificate_types contains the set of * certificate types received in a CertificateRequest * message. */ unsigned char *certificate_types; size_t num_certificate_types; int use_rsa_tmp; int key_block_length; unsigned char *key_block; const EVP_CIPHER *new_sym_enc; const EVP_AEAD *new_aead; const EVP_MD *new_hash; int new_mac_pkey_type; int new_mac_secret_size; /* Server-only: cert_request is true if a client certificate was * requested. */ int cert_request; } tmp; /* Connection binding to prevent renegotiation attacks */ unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; unsigned char previous_client_finished_len; unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; unsigned char previous_server_finished_len; int send_connection_binding; /* TODOEKR */ #ifndef OPENSSL_NO_NEXTPROTONEG /* Set if we saw the Next Protocol Negotiation extension from our peer. */ int next_proto_neg_seen; #endif /* ALPN information * (we are in the process of transitioning from NPN to ALPN.) */ /* In a server these point to the selected ALPN protocol after the * ClientHello has been processed. In a client these contain the * protocol that the server selected once the ServerHello has been * processed. */ uint8_t *alpn_selected; size_t alpn_selected_len; /* In a client, this means that the server supported Channel ID and that * a Channel ID was sent. In a server it means that we echoed support * for Channel IDs and that tlsext_channel_id will be valid after the * handshake. */ char tlsext_channel_id_valid; /* tlsext_channel_id_new means that the updated Channel ID extension * was negotiated. This is a temporary hack in the code to support both * forms of Channel ID extension while we transition to the new format, * which fixed a security issue. */ char tlsext_channel_id_new; /* For a server: * If |tlsext_channel_id_valid| is true, then this contains the * verified Channel ID from the client: a P256 point, (x,y), where * each are big-endian values. */ unsigned char tlsext_channel_id[64]; } SSL3_STATE; #endif /* SSLv3 */ /*client */ /* extra state */ #define SSL3_ST_CW_FLUSH (0x100|SSL_ST_CONNECT) #define SSL3_ST_CUTTHROUGH_COMPLETE (0x101|SSL_ST_CONNECT) /* write to server */ #define SSL3_ST_CW_CLNT_HELLO_A (0x110|SSL_ST_CONNECT) #define SSL3_ST_CW_CLNT_HELLO_B (0x111|SSL_ST_CONNECT) /* read from server */ #define SSL3_ST_CR_SRVR_HELLO_A (0x120|SSL_ST_CONNECT) #define SSL3_ST_CR_SRVR_HELLO_B (0x121|SSL_ST_CONNECT) #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT) #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT) #define SSL3_ST_CR_CERT_A (0x130|SSL_ST_CONNECT) #define SSL3_ST_CR_CERT_B (0x131|SSL_ST_CONNECT) #define SSL3_ST_CR_KEY_EXCH_A (0x140|SSL_ST_CONNECT) #define SSL3_ST_CR_KEY_EXCH_B (0x141|SSL_ST_CONNECT) #define SSL3_ST_CR_CERT_REQ_A (0x150|SSL_ST_CONNECT) #define SSL3_ST_CR_CERT_REQ_B (0x151|SSL_ST_CONNECT) #define SSL3_ST_CR_SRVR_DONE_A (0x160|SSL_ST_CONNECT) #define SSL3_ST_CR_SRVR_DONE_B (0x161|SSL_ST_CONNECT) /* write to server */ #define SSL3_ST_CW_CERT_A (0x170|SSL_ST_CONNECT) #define SSL3_ST_CW_CERT_B (0x171|SSL_ST_CONNECT) #define SSL3_ST_CW_CERT_C (0x172|SSL_ST_CONNECT) #define SSL3_ST_CW_CERT_D (0x173|SSL_ST_CONNECT) #define SSL3_ST_CW_KEY_EXCH_A (0x180|SSL_ST_CONNECT) #define SSL3_ST_CW_KEY_EXCH_B (0x181|SSL_ST_CONNECT) #define SSL3_ST_CW_CERT_VRFY_A (0x190|SSL_ST_CONNECT) #define SSL3_ST_CW_CERT_VRFY_B (0x191|SSL_ST_CONNECT) #define SSL3_ST_CW_CHANGE_A (0x1A0|SSL_ST_CONNECT) #define SSL3_ST_CW_CHANGE_B (0x1A1|SSL_ST_CONNECT) #ifndef OPENSSL_NO_NEXTPROTONEG #define SSL3_ST_CW_NEXT_PROTO_A (0x200|SSL_ST_CONNECT) #define SSL3_ST_CW_NEXT_PROTO_B (0x201|SSL_ST_CONNECT) #endif #define SSL3_ST_CW_CHANNEL_ID_A (0x220|SSL_ST_CONNECT) #define SSL3_ST_CW_CHANNEL_ID_B (0x221|SSL_ST_CONNECT) #define SSL3_ST_CW_FINISHED_A (0x1B0|SSL_ST_CONNECT) #define SSL3_ST_CW_FINISHED_B (0x1B1|SSL_ST_CONNECT) /* read from server */ #define SSL3_ST_CR_CHANGE_A (0x1C0|SSL_ST_CONNECT) #define SSL3_ST_CR_CHANGE_B (0x1C1|SSL_ST_CONNECT) #define SSL3_ST_CR_FINISHED_A (0x1D0|SSL_ST_CONNECT) #define SSL3_ST_CR_FINISHED_B (0x1D1|SSL_ST_CONNECT) #define SSL3_ST_CR_SESSION_TICKET_A (0x1E0|SSL_ST_CONNECT) #define SSL3_ST_CR_SESSION_TICKET_B (0x1E1|SSL_ST_CONNECT) #define SSL3_ST_CR_CERT_STATUS_A (0x1F0|SSL_ST_CONNECT) #define SSL3_ST_CR_CERT_STATUS_B (0x1F1|SSL_ST_CONNECT) /* server */ /* extra state */ #define SSL3_ST_SW_FLUSH (0x100|SSL_ST_ACCEPT) /* read from client */ /* Do not change the number values, they do matter */ #define SSL3_ST_SR_CLNT_HELLO_A (0x110|SSL_ST_ACCEPT) #define SSL3_ST_SR_CLNT_HELLO_B (0x111|SSL_ST_ACCEPT) #define SSL3_ST_SR_CLNT_HELLO_C (0x112|SSL_ST_ACCEPT) #define SSL3_ST_SR_CLNT_HELLO_D (0x115|SSL_ST_ACCEPT) /* write to client */ #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT) #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT) #define SSL3_ST_SW_HELLO_REQ_A (0x120|SSL_ST_ACCEPT) #define SSL3_ST_SW_HELLO_REQ_B (0x121|SSL_ST_ACCEPT) #define SSL3_ST_SW_HELLO_REQ_C (0x122|SSL_ST_ACCEPT) #define SSL3_ST_SW_SRVR_HELLO_A (0x130|SSL_ST_ACCEPT) #define SSL3_ST_SW_SRVR_HELLO_B (0x131|SSL_ST_ACCEPT) #define SSL3_ST_SW_CERT_A (0x140|SSL_ST_ACCEPT) #define SSL3_ST_SW_CERT_B (0x141|SSL_ST_ACCEPT) #define SSL3_ST_SW_KEY_EXCH_A (0x150|SSL_ST_ACCEPT) #define SSL3_ST_SW_KEY_EXCH_B (0x151|SSL_ST_ACCEPT) #define SSL3_ST_SW_CERT_REQ_A (0x160|SSL_ST_ACCEPT) #define SSL3_ST_SW_CERT_REQ_B (0x161|SSL_ST_ACCEPT) #define SSL3_ST_SW_SRVR_DONE_A (0x170|SSL_ST_ACCEPT) #define SSL3_ST_SW_SRVR_DONE_B (0x171|SSL_ST_ACCEPT) /* read from client */ #define SSL3_ST_SR_CERT_A (0x180|SSL_ST_ACCEPT) #define SSL3_ST_SR_CERT_B (0x181|SSL_ST_ACCEPT) #define SSL3_ST_SR_KEY_EXCH_A (0x190|SSL_ST_ACCEPT) #define SSL3_ST_SR_KEY_EXCH_B (0x191|SSL_ST_ACCEPT) #define SSL3_ST_SR_CERT_VRFY_A (0x1A0|SSL_ST_ACCEPT) #define SSL3_ST_SR_CERT_VRFY_B (0x1A1|SSL_ST_ACCEPT) #define SSL3_ST_SR_CHANGE_A (0x1B0|SSL_ST_ACCEPT) #define SSL3_ST_SR_CHANGE_B (0x1B1|SSL_ST_ACCEPT) #ifndef OPENSSL_NO_NEXTPROTONEG #define SSL3_ST_SR_NEXT_PROTO_A (0x210|SSL_ST_ACCEPT) #define SSL3_ST_SR_NEXT_PROTO_B (0x211|SSL_ST_ACCEPT) #endif #define SSL3_ST_SR_POST_CLIENT_CERT (0x1BF|SSL_ST_ACCEPT) #define SSL3_ST_SR_CHANNEL_ID_A (0x230|SSL_ST_ACCEPT) #define SSL3_ST_SR_CHANNEL_ID_B (0x231|SSL_ST_ACCEPT) #define SSL3_ST_SR_FINISHED_A (0x1C0|SSL_ST_ACCEPT) #define SSL3_ST_SR_FINISHED_B (0x1C1|SSL_ST_ACCEPT) /* write to client */ #define SSL3_ST_SW_CHANGE_A (0x1D0|SSL_ST_ACCEPT) #define SSL3_ST_SW_CHANGE_B (0x1D1|SSL_ST_ACCEPT) #define SSL3_ST_SW_FINISHED_A (0x1E0|SSL_ST_ACCEPT) #define SSL3_ST_SW_FINISHED_B (0x1E1|SSL_ST_ACCEPT) #define SSL3_ST_SW_SESSION_TICKET_A (0x1F0|SSL_ST_ACCEPT) #define SSL3_ST_SW_SESSION_TICKET_B (0x1F1|SSL_ST_ACCEPT) #define SSL3_ST_SW_CERT_STATUS_A (0x200|SSL_ST_ACCEPT) #define SSL3_ST_SW_CERT_STATUS_B (0x201|SSL_ST_ACCEPT) #define SSL3_ST_SW_SUPPLEMENTAL_DATA_A (0x220|SSL_ST_ACCEPT) #define SSL3_ST_SW_SUPPLEMENTAL_DATA_B (0x221|SSL_ST_ACCEPT) #define SSL3_MT_HELLO_REQUEST 0 #define SSL3_MT_CLIENT_HELLO 1 #define SSL3_MT_SERVER_HELLO 2 #define SSL3_MT_NEWSESSION_TICKET 4 #define SSL3_MT_CERTIFICATE 11 #define SSL3_MT_SERVER_KEY_EXCHANGE 12 #define SSL3_MT_CERTIFICATE_REQUEST 13 #define SSL3_MT_SERVER_DONE 14 #define SSL3_MT_CERTIFICATE_VERIFY 15 #define SSL3_MT_CLIENT_KEY_EXCHANGE 16 #define SSL3_MT_FINISHED 20 #define SSL3_MT_CERTIFICATE_STATUS 22 #define SSL3_MT_SUPPLEMENTAL_DATA 23 #ifndef OPENSSL_NO_NEXTPROTONEG #define SSL3_MT_NEXT_PROTO 67 #endif #define SSL3_MT_ENCRYPTED_EXTENSIONS 203 #define DTLS1_MT_HELLO_VERIFY_REQUEST 3 #define SSL3_MT_CCS 1 /* These are used when changing over to a new cipher */ #define SSL3_CC_READ 0x01 #define SSL3_CC_WRITE 0x02 #define SSL3_CC_CLIENT 0x10 #define SSL3_CC_SERVER 0x20 #define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE) #define SSL3_CHANGE_CIPHER_SERVER_READ (SSL3_CC_SERVER|SSL3_CC_READ) #define SSL3_CHANGE_CIPHER_CLIENT_READ (SSL3_CC_CLIENT|SSL3_CC_READ) #define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE) #ifdef __cplusplus } #endif #endif