crypto/openssl-0.9.7d/ssl/ssl_locl.h

   1 /* ssl/ssl_locl.h */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58 /* ====================================================================
  59  * Copyright (c) 1998-2001 The OpenSSL Project.  All rights reserved.
  60  *
  61  * Redistribution and use in source and binary forms, with or without
  62  * modification, are permitted provided that the following conditions
  63  * are met:
  64  *
  65  * 1. Redistributions of source code must retain the above copyright
  66  *    notice, this list of conditions and the following disclaimer.
  67  *
  68  * 2. Redistributions in binary form must reproduce the above copyright
  69  *    notice, this list of conditions and the following disclaimer in
  70  *    the documentation and/or other materials provided with the
  71  *    distribution.
  72  *
  73  * 3. All advertising materials mentioning features or use of this
  74  *    software must display the following acknowledgment:
  75  *    "This product includes software developed by the OpenSSL Project
  76  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  77  *
  78  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  79  *    endorse or promote products derived from this software without
  80  *    prior written permission. For written permission, please contact
  81  *    openssl-core@openssl.org.
  82  *
  83  * 5. Products derived from this software may not be called "OpenSSL"
  84  *    nor may "OpenSSL" appear in their names without prior written
  85  *    permission of the OpenSSL Project.
  86  *
  87  * 6. Redistributions of any form whatsoever must retain the following
  88  *    acknowledgment:
  89  *    "This product includes software developed by the OpenSSL Project
  90  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  91  *
  92  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  93  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  94  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  95  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  96  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  97  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  98  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  99  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 100  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 101  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 102  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 103  * OF THE POSSIBILITY OF SUCH DAMAGE.
 104  * ====================================================================
 105  *
 106  * This product includes cryptographic software written by Eric Young
 107  * (eay@cryptsoft.com).  This product includes software written by Tim
 108  * Hudson (tjh@cryptsoft.com).
 109  *
 110  */
 111
 112 #ifndef HEADER_SSL_LOCL_H
 113 #define HEADER_SSL_LOCL_H
 114 #include <stdlib.h>
 115 #include <time.h>
 116 #include <string.h>
 117 #include <errno.h>
 118
 119 #include "e_os.h"
 120
 121 #include <openssl/buffer.h>
 122 #include <openssl/comp.h>
 123 #include <openssl/bio.h>
 124 #include <openssl/crypto.h>
 125 #include <openssl/evp.h>
 126 #include <openssl/stack.h>
 127 #include <openssl/x509.h>
 128 #include <openssl/err.h>
 129 #include <openssl/ssl.h>
 130 #include <openssl/symhacks.h>
 131
 132 #ifdef OPENSSL_BUILD_SHLIBSSL
 133 # undef OPENSSL_EXTERN
 134 # define OPENSSL_EXTERN OPENSSL_EXPORT
 135 #endif
 136
 137 #define PKCS1_CHECK
 138
 139 #define c2l(c,l)        (l = ((unsigned long)(*((c)++)))     , \
 140                          l|=(((unsigned long)(*((c)++)))<< 8), \
 141                          l|=(((unsigned long)(*((c)++)))<<16), \
 142                          l|=(((unsigned long)(*((c)++)))<<24))
 143
 144 /* NOTE - c is not incremented as per c2l */
 145 #define c2ln(c,l1,l2,n) { \
 146                         c+=n; \
 147                         l1=l2=0; \
 148                         switch (n) { \
 149                         case 8: l2 =((unsigned long)(*(--(c))))<<24; \
 150                         case 7: l2|=((unsigned long)(*(--(c))))<<16; \
 151                         case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
 152                         case 5: l2|=((unsigned long)(*(--(c))));     \
 153                         case 4: l1 =((unsigned long)(*(--(c))))<<24; \
 154                         case 3: l1|=((unsigned long)(*(--(c))))<<16; \
 155                         case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
 156                         case 1: l1|=((unsigned long)(*(--(c))));     \
 157                                 } \
 158                         }
 159
 160 #define l2c(l,c)        (*((c)++)=(unsigned char)(((l)    )&0xff), \
 161                          *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
 162                          *((c)++)=(unsigned char)(((l)>>16)&0xff), \
 163                          *((c)++)=(unsigned char)(((l)>>24)&0xff))
 164
 165 #define n2l(c,l)        (l =((unsigned long)(*((c)++)))<<24, \
 166                          l|=((unsigned long)(*((c)++)))<<16, \
 167                          l|=((unsigned long)(*((c)++)))<< 8, \
 168                          l|=((unsigned long)(*((c)++))))
 169
 170 #define l2n(l,c)        (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
 171                          *((c)++)=(unsigned char)(((l)>>16)&0xff), \
 172                          *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
 173                          *((c)++)=(unsigned char)(((l)    )&0xff))
 174
 175 /* NOTE - c is not incremented as per l2c */
 176 #define l2cn(l1,l2,c,n) { \
 177                         c+=n; \
 178                         switch (n) { \
 179                         case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
 180                         case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
 181                         case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
 182                         case 5: *(--(c))=(unsigned char)(((l2)    )&0xff); \
 183                         case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
 184                         case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
 185                         case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
 186                         case 1: *(--(c))=(unsigned char)(((l1)    )&0xff); \
 187                                 } \
 188                         }
 189
 190 #define n2s(c,s)        ((s=(((unsigned int)(c[0]))<< 8)| \
 191                             (((unsigned int)(c[1]))    )),c+=2)
 192 #define s2n(s,c)        ((c[0]=(unsigned char)(((s)>> 8)&0xff), \
 193                           c[1]=(unsigned char)(((s)    )&0xff)),c+=2)
 194
 195 #define n2l3(c,l)       ((l =(((unsigned long)(c[0]))<<16)| \
 196                              (((unsigned long)(c[1]))<< 8)| \
 197                              (((unsigned long)(c[2]))    )),c+=3)
 198
 199 #define l2n3(l,c)       ((c[0]=(unsigned char)(((l)>>16)&0xff), \
 200                           c[1]=(unsigned char)(((l)>> 8)&0xff), \
 201                           c[2]=(unsigned char)(((l)    )&0xff)),c+=3)
 202
 203 /* LOCAL STUFF */
 204
 205 #define SSL_DECRYPT     0
 206 #define SSL_ENCRYPT     1
 207
 208 #define TWO_BYTE_BIT    0x80
 209 #define SEC_ESC_BIT     0x40
 210 #define TWO_BYTE_MASK   0x7fff
 211 #define THREE_BYTE_MASK 0x3fff
 212
 213 #define INC32(a)        ((a)=((a)+1)&0xffffffffL)
 214 #define DEC32(a)        ((a)=((a)-1)&0xffffffffL)
 215 #define MAX_MAC_SIZE    20 /* up from 16 for SSLv3 */
 216
 217 /*
 218  * Define the Bitmasks for SSL_CIPHER.algorithms.
 219  * This bits are used packed as dense as possible. If new methods/ciphers
 220  * etc will be added, the bits a likely to change, so this information
 221  * is for internal library use only, even though SSL_CIPHER.algorithms
 222  * can be publicly accessed.
 223  * Use the according functions for cipher management instead.
 224  *
 225  * The bit mask handling in the selection and sorting scheme in
 226  * ssl_create_cipher_list() has only limited capabilities, reflecting
 227  * that the different entities within are mutually exclusive:
 228  * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
 229  */
 230 #define SSL_MKEY_MASK           0x0000003FL
 231 #define SSL_kRSA                0x00000001L /* RSA key exchange */
 232 #define SSL_kDHr                0x00000002L /* DH cert RSA CA cert */
 233 #define SSL_kDHd                0x00000004L /* DH cert DSA CA cert */
 234 #define SSL_kFZA                0x00000008L
 235 #define SSL_kEDH                0x00000010L /* tmp DH key no DH cert */
 236 #define SSL_kKRB5               0x00000020L /* Kerberos5 key exchange */
 237 #define SSL_EDH                 (SSL_kEDH|(SSL_AUTH_MASK^SSL_aNULL))
 238
 239 #define SSL_AUTH_MASK           0x00000FC0L
 240 #define SSL_aRSA                0x00000040L /* Authenticate with RSA */
 241 #define SSL_aDSS                0x00000080L /* Authenticate with DSS */
 242 #define SSL_DSS                 SSL_aDSS
 243 #define SSL_aFZA                0x00000100L
 244 #define SSL_aNULL               0x00000200L /* no Authenticate, ADH */
 245 #define SSL_aDH                 0x00000400L /* no Authenticate, ADH */
 246 #define SSL_aKRB5               0x00000800L /* Authenticate with KRB5 */
 247
 248 #define SSL_NULL                (SSL_eNULL)
 249 #define SSL_ADH                 (SSL_kEDH|SSL_aNULL)
 250 #define SSL_RSA                 (SSL_kRSA|SSL_aRSA)
 251 #define SSL_DH                  (SSL_kDHr|SSL_kDHd|SSL_kEDH)
 252 #define SSL_FZA                 (SSL_aFZA|SSL_kFZA|SSL_eFZA)
 253 #define SSL_KRB5                (SSL_kKRB5|SSL_aKRB5)
 254
 255 #define SSL_ENC_MASK            0x0087F000L
 256 #define SSL_DES                 0x00001000L
 257 #define SSL_3DES                0x00002000L
 258 #define SSL_RC4                 0x00004000L
 259 #define SSL_RC2                 0x00008000L
 260 #define SSL_IDEA                0x00010000L
 261 #define SSL_eFZA                0x00020000L
 262 #define SSL_eNULL               0x00040000L
 263 #define SSL_AES                 0x00800000L
 264
 265 #define SSL_MAC_MASK            0x00180000L
 266 #define SSL_MD5                 0x00080000L
 267 #define SSL_SHA1                0x00100000L
 268 #define SSL_SHA                 (SSL_SHA1)
 269
 270 #define SSL_SSL_MASK            0x00600000L
 271 #define SSL_SSLV2               0x00200000L
 272 #define SSL_SSLV3               0x00400000L
 273 #define SSL_TLSV1               SSL_SSLV3       /* for now */
 274
 275 /* we have used 007fffff - 9 bits left to go */
 276
 277 /*
 278  * Export and cipher strength information. For each cipher we have to decide
 279  * whether it is exportable or not. This information is likely to change
 280  * over time, since the export control rules are no static technical issue.
 281  *
 282  * Independent of the export flag the cipher strength is sorted into classes.
 283  * SSL_EXP40 was denoting the 40bit US export limit of past times, which now
 284  * is at 56bit (SSL_EXP56). If the exportable cipher class is going to change
 285  * again (eg. to 64bit) the use of "SSL_EXP*" becomes blurred even more,
 286  * since SSL_EXP64 could be similar to SSL_LOW.
 287  * For this reason SSL_MICRO and SSL_MINI macros are included to widen the
 288  * namespace of SSL_LOW-SSL_HIGH to lower values. As development of speed
 289  * and ciphers goes, another extension to SSL_SUPER and/or SSL_ULTRA would
 290  * be possible.
 291  */
 292 #define SSL_EXP_MASK            0x00000003L
 293 #define SSL_NOT_EXP             0x00000001L
 294 #define SSL_EXPORT              0x00000002L
 295
 296 #define SSL_STRONG_MASK         0x000000fcL
 297 #define SSL_STRONG_NONE         0x00000004L
 298 #define SSL_EXP40               0x00000008L
 299 #define SSL_MICRO               (SSL_EXP40)
 300 #define SSL_EXP56               0x00000010L
 301 #define SSL_MINI                (SSL_EXP56)
 302 #define SSL_LOW                 0x00000020L
 303 #define SSL_MEDIUM              0x00000040L
 304 #define SSL_HIGH                0x00000080L
 305
 306 /* we have used 000000ff - 24 bits left to go */
 307
 308 /*
 309  * Macros to check the export status and cipher strength for export ciphers.
 310  * Even though the macros for EXPORT and EXPORT40/56 have similar names,
 311  * their meaning is different:
 312  * *_EXPORT macros check the 'exportable' status.
 313  * *_EXPORT40/56 macros are used to check whether a certain cipher strength
 314  *          is given.
 315  * Since the SSL_IS_EXPORT* and SSL_EXPORT* macros depend on the correct
 316  * algorithm structure element to be passed (algorithms, algo_strength) and no
 317  * typechecking can be done as they are all of type unsigned long, their
 318  * direct usage is discouraged.
 319  * Use the SSL_C_* macros instead.
 320  */
 321 #define SSL_IS_EXPORT(a)        ((a)&SSL_EXPORT)
 322 #define SSL_IS_EXPORT56(a)      ((a)&SSL_EXP56)
 323 #define SSL_IS_EXPORT40(a)      ((a)&SSL_EXP40)
 324 #define SSL_C_IS_EXPORT(c)      SSL_IS_EXPORT((c)->algo_strength)
 325 #define SSL_C_IS_EXPORT56(c)    SSL_IS_EXPORT56((c)->algo_strength)
 326 #define SSL_C_IS_EXPORT40(c)    SSL_IS_EXPORT40((c)->algo_strength)
 327
 328 #define SSL_EXPORT_KEYLENGTH(a,s)       (SSL_IS_EXPORT40(s) ? 5 : \
 329                                  ((a)&SSL_ENC_MASK) == SSL_DES ? 8 : 7)
 330 #define SSL_EXPORT_PKEYLENGTH(a) (SSL_IS_EXPORT40(a) ? 512 : 1024)
 331 #define SSL_C_EXPORT_KEYLENGTH(c)       SSL_EXPORT_KEYLENGTH((c)->algorithms, \
 332                                 (c)->algo_strength)
 333 #define SSL_C_EXPORT_PKEYLENGTH(c)      SSL_EXPORT_PKEYLENGTH((c)->algo_strength)
 334
 335
 336 #define SSL_ALL                 0xffffffffL
 337 #define SSL_ALL_CIPHERS         (SSL_MKEY_MASK|SSL_AUTH_MASK|SSL_ENC_MASK|\
 338                                 SSL_MAC_MASK)
 339 #define SSL_ALL_STRENGTHS       (SSL_EXP_MASK|SSL_STRONG_MASK)
 340
 341 /* Mostly for SSLv3 */
 342 #define SSL_PKEY_RSA_ENC        0
 343 #define SSL_PKEY_RSA_SIGN       1
 344 #define SSL_PKEY_DSA_SIGN       2
 345 #define SSL_PKEY_DH_RSA         3
 346 #define SSL_PKEY_DH_DSA         4
 347 #define SSL_PKEY_NUM            5
 348
 349 /* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) |
 350  *          <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN)
 351  * SSL_kDH  <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
 352  * SSL_kEDH <- RSA_ENC | RSA_SIGN | DSA_SIGN
 353  * SSL_aRSA <- RSA_ENC | RSA_SIGN
 354  * SSL_aDSS <- DSA_SIGN
 355  */
 356
 357 /*
 358 #define CERT_INVALID            0
 359 #define CERT_PUBLIC_KEY         1
 360 #define CERT_PRIVATE_KEY        2
 361 */
 362
 363 typedef struct cert_pkey_st
 364         {
 365         X509 *x509;
 366         EVP_PKEY *privatekey;
 367         } CERT_PKEY;
 368
 369 typedef struct cert_st
 370         {
 371         /* Current active set */
 372         CERT_PKEY *key; /* ALWAYS points to an element of the pkeys array
 373                          * Probably it would make more sense to store
 374                          * an index, not a pointer. */
 375
 376         /* The following masks are for the key and auth
 377          * algorithms that are supported by the certs below */
 378         int valid;
 379         unsigned long mask;
 380         unsigned long export_mask;
 381 #ifndef OPENSSL_NO_RSA
 382         RSA *rsa_tmp;
 383         RSA *(*rsa_tmp_cb)(SSL *ssl,int is_export,int keysize);
 384 #endif
 385 #ifndef OPENSSL_NO_DH
 386         DH *dh_tmp;
 387         DH *(*dh_tmp_cb)(SSL *ssl,int is_export,int keysize);
 388 #endif
 389
 390         CERT_PKEY pkeys[SSL_PKEY_NUM];
 391
 392         int references; /* >1 only if SSL_copy_session_id is used */
 393         } CERT;
 394
 395
 396 typedef struct sess_cert_st
 397         {
 398         STACK_OF(X509) *cert_chain; /* as received from peer (not for SSL2) */
 399
 400         /* The 'peer_...' members are used only by clients. */
 401         int peer_cert_type;
 402
 403         CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never NULL!) */
 404         CERT_PKEY peer_pkeys[SSL_PKEY_NUM];
 405         /* Obviously we don't have the private keys of these,
 406          * so maybe we shouldn't even use the CERT_PKEY type here. */
 407
 408 #ifndef OPENSSL_NO_RSA
 409         RSA *peer_rsa_tmp; /* not used for SSL 2 */
 410 #endif
 411 #ifndef OPENSSL_NO_DH
 412         DH *peer_dh_tmp; /* not used for SSL 2 */
 413 #endif
 414
 415         int references; /* actually always 1 at the moment */
 416         } SESS_CERT;
 417
 418
 419 /*#define MAC_DEBUG     */
 420
 421 /*#define ERR_DEBUG     */
 422 /*#define ABORT_DEBUG   */
 423 /*#define PKT_DEBUG 1   */
 424 /*#define DES_DEBUG     */
 425 /*#define DES_OFB_DEBUG */
 426 /*#define SSL_DEBUG     */
 427 /*#define RSA_DEBUG     */
 428 /*#define IDEA_DEBUG    */
 429
 430 #define FP_ICC  (int (*)(const void *,const void *))
 431 #define ssl_put_cipher_by_char(ssl,ciph,ptr) \
 432                 ((ssl)->method->put_cipher_by_char((ciph),(ptr)))
 433 #define ssl_get_cipher_by_char(ssl,ptr) \
 434                 ((ssl)->method->get_cipher_by_char(ptr))
 435
 436 /* This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff
 437  * It is a bit of a mess of functions, but hell, think of it as
 438  * an opaque structure :-) */
 439 typedef struct ssl3_enc_method
 440         {
 441         int (*enc)(SSL *, int);
 442         int (*mac)(SSL *, unsigned char *, int);
 443         int (*setup_key_block)(SSL *);
 444         int (*generate_master_secret)(SSL *, unsigned char *, unsigned char *, int);
 445         int (*change_cipher_state)(SSL *, int);
 446         int (*final_finish_mac)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char *, int, unsigned char *);
 447         int finish_mac_length;
 448         int (*cert_verify_mac)(SSL *, EVP_MD_CTX *, unsigned char *);
 449         const char *client_finished_label;
 450         int client_finished_label_len;
 451         const char *server_finished_label;
 452         int server_finished_label_len;
 453         int (*alert_value)(int);
 454         } SSL3_ENC_METHOD;
 455
 456 /* Used for holding the relevant compression methods loaded into SSL_CTX */
 457 typedef struct ssl3_comp_st
 458         {
 459         int comp_id;    /* The identifier byte for this compression type */
 460         char *name;     /* Text name used for the compression type */
 461         COMP_METHOD *method; /* The method :-) */
 462         } SSL3_COMP;
 463
 464 OPENSSL_EXTERN SSL3_ENC_METHOD ssl3_undef_enc_method;
 465 OPENSSL_EXTERN SSL_CIPHER ssl2_ciphers[];
 466 OPENSSL_EXTERN SSL_CIPHER ssl3_ciphers[];
 467
 468 #ifdef OPENSSL_SYS_VMS
 469 #undef SSL_COMP_get_compression_methods
 470 #define SSL_COMP_get_compression_methods        SSL_COMP_get_compress_methods
 471 #endif
 472
 473
 474 SSL_METHOD *ssl_bad_method(int ver);
 475 SSL_METHOD *sslv2_base_method(void);
 476 SSL_METHOD *sslv23_base_method(void);
 477 SSL_METHOD *sslv3_base_method(void);
 478
 479 void ssl_clear_cipher_ctx(SSL *s);
 480 int ssl_clear_bad_session(SSL *s);
 481 CERT *ssl_cert_new(void);
 482 CERT *ssl_cert_dup(CERT *cert);
 483 int ssl_cert_inst(CERT **o);
 484 void ssl_cert_free(CERT *c);
 485 SESS_CERT *ssl_sess_cert_new(void);
 486 void ssl_sess_cert_free(SESS_CERT *sc);
 487 int ssl_set_peer_cert_type(SESS_CERT *c, int type);
 488 int ssl_get_new_session(SSL *s, int session);
 489 int ssl_get_prev_session(SSL *s, unsigned char *session,int len);
 490 int ssl_cipher_id_cmp(const SSL_CIPHER *a,const SSL_CIPHER *b);
 491 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
 492                         const SSL_CIPHER * const *bp);
 493 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
 494                                                STACK_OF(SSL_CIPHER) **skp);
 495 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p);
 496 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
 497                                              STACK_OF(SSL_CIPHER) **pref,
 498                                              STACK_OF(SSL_CIPHER) **sorted,
 499                                              const char *rule_str);
 500 void ssl_update_cache(SSL *s, int mode);
 501 int ssl_cipher_get_evp(SSL_SESSION *s,const EVP_CIPHER **enc,const EVP_MD **md,
 502                        SSL_COMP **comp);
 503 int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk);
 504 int ssl_undefined_function(SSL *s);
 505 X509 *ssl_get_server_send_cert(SSL *);
 506 EVP_PKEY *ssl_get_sign_pkey(SSL *,SSL_CIPHER *);
 507 int ssl_cert_type(X509 *x,EVP_PKEY *pkey);
 508 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher);
 509 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
 510 int ssl_verify_alarm_type(long type);
 511
 512 int ssl2_enc_init(SSL *s, int client);
 513 int ssl2_generate_key_material(SSL *s);
 514 void ssl2_enc(SSL *s,int send_data);
 515 void ssl2_mac(SSL *s,unsigned char *mac,int send_data);
 516 SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p);
 517 int ssl2_put_cipher_by_char(const SSL_CIPHER *c,unsigned char *p);
 518 int ssl2_part_read(SSL *s, unsigned long f, int i);
 519 int ssl2_do_write(SSL *s);
 520 int ssl2_set_certificate(SSL *s, int type, int len, unsigned char *data);
 521 void ssl2_return_error(SSL *s,int reason);
 522 void ssl2_write_error(SSL *s);
 523 int ssl2_num_ciphers(void);
 524 SSL_CIPHER *ssl2_get_cipher(unsigned int u);
 525 int     ssl2_new(SSL *s);
 526 void    ssl2_free(SSL *s);
 527 int     ssl2_accept(SSL *s);
 528 int     ssl2_connect(SSL *s);
 529 int     ssl2_read(SSL *s, void *buf, int len);
 530 int     ssl2_peek(SSL *s, void *buf, int len);
 531 int     ssl2_write(SSL *s, const void *buf, int len);
 532 int     ssl2_shutdown(SSL *s);
 533 void    ssl2_clear(SSL *s);
 534 long    ssl2_ctrl(SSL *s,int cmd, long larg, void *parg);
 535 long    ssl2_ctx_ctrl(SSL_CTX *s,int cmd, long larg, void *parg);
 536 long    ssl2_callback_ctrl(SSL *s,int cmd, void (*fp)());
 537 long    ssl2_ctx_callback_ctrl(SSL_CTX *s,int cmd, void (*fp)());
 538 int     ssl2_pending(SSL *s);
 539
 540 SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
 541 int ssl3_put_cipher_by_char(const SSL_CIPHER *c,unsigned char *p);
 542 void ssl3_init_finished_mac(SSL *s);
 543 int ssl3_send_server_certificate(SSL *s);
 544 int ssl3_get_finished(SSL *s,int state_a,int state_b);
 545 int ssl3_setup_key_block(SSL *s);
 546 int ssl3_send_change_cipher_spec(SSL *s,int state_a,int state_b);
 547 int ssl3_change_cipher_state(SSL *s,int which);
 548 void ssl3_cleanup_key_block(SSL *s);
 549 int ssl3_do_write(SSL *s,int type);
 550 void ssl3_send_alert(SSL *s,int level, int desc);
 551 int ssl3_generate_master_secret(SSL *s, unsigned char *out,
 552         unsigned char *p, int len);
 553 int ssl3_get_req_cert_type(SSL *s,unsigned char *p);
 554 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
 555 int ssl3_send_finished(SSL *s, int a, int b, const char *sender,int slen);
 556 int ssl3_num_ciphers(void);
 557 SSL_CIPHER *ssl3_get_cipher(unsigned int u);
 558 int ssl3_renegotiate(SSL *ssl);
 559 int ssl3_renegotiate_check(SSL *ssl);
 560 int ssl3_dispatch_alert(SSL *s);
 561 int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
 562 int ssl3_write_bytes(SSL *s, int type, const void *buf, int len);
 563 int ssl3_final_finish_mac(SSL *s, EVP_MD_CTX *ctx1, EVP_MD_CTX *ctx2,
 564         const char *sender, int slen,unsigned char *p);
 565 int ssl3_cert_verify_mac(SSL *s, EVP_MD_CTX *in, unsigned char *p);
 566 void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
 567 int ssl3_enc(SSL *s, int send_data);
 568 int ssl3_mac(SSL *ssl, unsigned char *md, int send_data);
 569 unsigned long ssl3_output_cert_chain(SSL *s, X509 *x);
 570 SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,STACK_OF(SSL_CIPHER) *clnt,
 571                                STACK_OF(SSL_CIPHER) *srvr);
 572 int     ssl3_setup_buffers(SSL *s);
 573 int     ssl3_new(SSL *s);
 574 void    ssl3_free(SSL *s);
 575 int     ssl3_accept(SSL *s);
 576 int     ssl3_connect(SSL *s);
 577 int     ssl3_read(SSL *s, void *buf, int len);
 578 int     ssl3_peek(SSL *s, void *buf, int len);
 579 int     ssl3_write(SSL *s, const void *buf, int len);
 580 int     ssl3_shutdown(SSL *s);
 581 void    ssl3_clear(SSL *s);
 582 long    ssl3_ctrl(SSL *s,int cmd, long larg, void *parg);
 583 long    ssl3_ctx_ctrl(SSL_CTX *s,int cmd, long larg, void *parg);
 584 long    ssl3_callback_ctrl(SSL *s,int cmd, void (*fp)());
 585 long    ssl3_ctx_callback_ctrl(SSL_CTX *s,int cmd, void (*fp)());
 586 int     ssl3_pending(SSL *s);
 587
 588 int ssl23_accept(SSL *s);
 589 int ssl23_connect(SSL *s);
 590 int ssl23_read_bytes(SSL *s, int n);
 591 int ssl23_write_bytes(SSL *s);
 592
 593 int tls1_new(SSL *s);
 594 void tls1_free(SSL *s);
 595 void tls1_clear(SSL *s);
 596 long tls1_ctrl(SSL *s,int cmd, long larg, void *parg);
 597 long tls1_callback_ctrl(SSL *s,int cmd, void (*fp)());
 598 SSL_METHOD *tlsv1_base_method(void );
 599
 600 int ssl_init_wbio_buffer(SSL *s, int push);
 601 void ssl_free_wbio_buffer(SSL *s);
 602
 603 int tls1_change_cipher_state(SSL *s, int which);
 604 int tls1_setup_key_block(SSL *s);
 605 int tls1_enc(SSL *s, int snd);
 606 int tls1_final_finish_mac(SSL *s, EVP_MD_CTX *in1_ctx, EVP_MD_CTX *in2_ctx,
 607         const char *str, int slen, unsigned char *p);
 608 int tls1_cert_verify_mac(SSL *s, EVP_MD_CTX *in, unsigned char *p);
 609 int tls1_mac(SSL *ssl, unsigned char *md, int snd);
 610 int tls1_generate_master_secret(SSL *s, unsigned char *out,
 611         unsigned char *p, int len);
 612 int tls1_alert_code(int code);
 613 int ssl3_alert_code(int code);
 614 int ssl_ok(SSL *s);
 615
 616 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
 617 STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void);
 618
 619
 620 #endif