| /* ssl/s2_lib.c */ |
| /* 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) 1998-2007 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 "ssl_locl.h" |
| #ifndef OPENSSL_NO_SSL2 |
| #include <openssl/opensslconf.h> |
| #if !defined(OPENSSL_SYS_STARBOARD) |
| # include <stdio.h> |
| #endif // !defined(OPENSSL_SYS_STARBOARD) |
| # include <openssl/objects.h> |
| # include <openssl/evp.h> |
| # include <openssl/md5.h> |
| |
| const char ssl2_version_str[] = "SSLv2" OPENSSL_VERSION_PTEXT; |
| |
| # define SSL2_NUM_CIPHERS (sizeof(ssl2_ciphers)/sizeof(SSL_CIPHER)) |
| |
| /* list of available SSLv2 ciphers (sorted by id) */ |
| OPENSSL_GLOBAL const SSL_CIPHER ssl2_ciphers[] = { |
| # if 0 |
| /* NULL_WITH_MD5 v3 */ |
| { |
| 1, |
| SSL2_TXT_NULL_WITH_MD5, |
| SSL2_CK_NULL_WITH_MD5, |
| SSL_kRSA, |
| SSL_aRSA, |
| SSL_eNULL, |
| SSL_MD5, |
| SSL_SSLV2, |
| SSL_EXPORT | SSL_EXP40 | SSL_STRONG_NONE, |
| 0, |
| 0, |
| 0, |
| }, |
| # endif |
| |
| /* RC4_128_WITH_MD5 */ |
| { |
| 1, |
| SSL2_TXT_RC4_128_WITH_MD5, |
| SSL2_CK_RC4_128_WITH_MD5, |
| SSL_kRSA, |
| SSL_aRSA, |
| SSL_RC4, |
| SSL_MD5, |
| SSL_SSLV2, |
| SSL_NOT_EXP | SSL_MEDIUM, |
| 0, |
| 128, |
| 128, |
| }, |
| |
| /* RC4_128_EXPORT40_WITH_MD5 */ |
| { |
| 1, |
| SSL2_TXT_RC4_128_EXPORT40_WITH_MD5, |
| SSL2_CK_RC4_128_EXPORT40_WITH_MD5, |
| SSL_kRSA, |
| SSL_aRSA, |
| SSL_RC4, |
| SSL_MD5, |
| SSL_SSLV2, |
| SSL_EXPORT | SSL_EXP40, |
| SSL2_CF_5_BYTE_ENC, |
| 40, |
| 128, |
| }, |
| |
| /* RC2_128_CBC_WITH_MD5 */ |
| { |
| 1, |
| SSL2_TXT_RC2_128_CBC_WITH_MD5, |
| SSL2_CK_RC2_128_CBC_WITH_MD5, |
| SSL_kRSA, |
| SSL_aRSA, |
| SSL_RC2, |
| SSL_MD5, |
| SSL_SSLV2, |
| SSL_NOT_EXP | SSL_MEDIUM, |
| 0, |
| 128, |
| 128, |
| }, |
| |
| /* RC2_128_CBC_EXPORT40_WITH_MD5 */ |
| { |
| 1, |
| SSL2_TXT_RC2_128_CBC_EXPORT40_WITH_MD5, |
| SSL2_CK_RC2_128_CBC_EXPORT40_WITH_MD5, |
| SSL_kRSA, |
| SSL_aRSA, |
| SSL_RC2, |
| SSL_MD5, |
| SSL_SSLV2, |
| SSL_EXPORT | SSL_EXP40, |
| SSL2_CF_5_BYTE_ENC, |
| 40, |
| 128, |
| }, |
| |
| # ifndef OPENSSL_NO_IDEA |
| /* IDEA_128_CBC_WITH_MD5 */ |
| { |
| 1, |
| SSL2_TXT_IDEA_128_CBC_WITH_MD5, |
| SSL2_CK_IDEA_128_CBC_WITH_MD5, |
| SSL_kRSA, |
| SSL_aRSA, |
| SSL_IDEA, |
| SSL_MD5, |
| SSL_SSLV2, |
| SSL_NOT_EXP | SSL_MEDIUM, |
| 0, |
| 128, |
| 128, |
| }, |
| # endif |
| |
| /* DES_64_CBC_WITH_MD5 */ |
| { |
| 1, |
| SSL2_TXT_DES_64_CBC_WITH_MD5, |
| SSL2_CK_DES_64_CBC_WITH_MD5, |
| SSL_kRSA, |
| SSL_aRSA, |
| SSL_DES, |
| SSL_MD5, |
| SSL_SSLV2, |
| SSL_NOT_EXP | SSL_LOW, |
| 0, |
| 56, |
| 56, |
| }, |
| |
| /* DES_192_EDE3_CBC_WITH_MD5 */ |
| { |
| 1, |
| SSL2_TXT_DES_192_EDE3_CBC_WITH_MD5, |
| SSL2_CK_DES_192_EDE3_CBC_WITH_MD5, |
| SSL_kRSA, |
| SSL_aRSA, |
| SSL_3DES, |
| SSL_MD5, |
| SSL_SSLV2, |
| SSL_NOT_EXP | SSL_HIGH, |
| 0, |
| 112, |
| 168, |
| }, |
| |
| # if 0 |
| /* RC4_64_WITH_MD5 */ |
| { |
| 1, |
| SSL2_TXT_RC4_64_WITH_MD5, |
| SSL2_CK_RC4_64_WITH_MD5, |
| SSL_kRSA, |
| SSL_aRSA, |
| SSL_RC4, |
| SSL_MD5, |
| SSL_SSLV2, |
| SSL_NOT_EXP | SSL_LOW, |
| SSL2_CF_8_BYTE_ENC, |
| 64, |
| 64, |
| }, |
| # endif |
| |
| # if 0 |
| /* NULL SSLeay (testing) */ |
| { |
| 0, |
| SSL2_TXT_NULL, |
| SSL2_CK_NULL, |
| 0, |
| 0, |
| 0, |
| 0, |
| SSL_SSLV2, |
| SSL_STRONG_NONE, |
| 0, |
| 0, |
| 0, |
| }, |
| # endif |
| |
| /* end of list :-) */ |
| }; |
| |
| long ssl2_default_timeout(void) |
| { |
| return (300); |
| } |
| |
| int ssl2_num_ciphers(void) |
| { |
| return (SSL2_NUM_CIPHERS); |
| } |
| |
| const SSL_CIPHER *ssl2_get_cipher(unsigned int u) |
| { |
| if (u < SSL2_NUM_CIPHERS) |
| return (&(ssl2_ciphers[SSL2_NUM_CIPHERS - 1 - u])); |
| else |
| return (NULL); |
| } |
| |
| int ssl2_pending(const SSL *s) |
| { |
| return SSL_in_init(s) ? 0 : s->s2->ract_data_length; |
| } |
| |
| int ssl2_new(SSL *s) |
| { |
| SSL2_STATE *s2; |
| |
| if ((s2 = OPENSSL_malloc(sizeof *s2)) == NULL) |
| goto err; |
| OPENSSL_port_memset(s2, 0, sizeof *s2); |
| |
| # if SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER + 3 > SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 2 |
| # error "assertion failed" |
| # endif |
| |
| if ((s2->rbuf = |
| OPENSSL_malloc(SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 2)) == NULL) |
| goto err; |
| /* |
| * wbuf needs one byte more because when using two-byte headers, we leave |
| * the first byte unused in do_ssl_write (s2_pkt.c) |
| */ |
| if ((s2->wbuf = |
| OPENSSL_malloc(SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER + 3)) == NULL) |
| goto err; |
| s->s2 = s2; |
| |
| ssl2_clear(s); |
| return (1); |
| err: |
| if (s2 != NULL) { |
| if (s2->wbuf != NULL) |
| OPENSSL_free(s2->wbuf); |
| if (s2->rbuf != NULL) |
| OPENSSL_free(s2->rbuf); |
| OPENSSL_free(s2); |
| } |
| return (0); |
| } |
| |
| void ssl2_free(SSL *s) |
| { |
| SSL2_STATE *s2; |
| |
| if (s == NULL) |
| return; |
| |
| s2 = s->s2; |
| if (s2->rbuf != NULL) |
| OPENSSL_free(s2->rbuf); |
| if (s2->wbuf != NULL) |
| OPENSSL_free(s2->wbuf); |
| OPENSSL_cleanse(s2, sizeof *s2); |
| OPENSSL_free(s2); |
| s->s2 = NULL; |
| } |
| |
| void ssl2_clear(SSL *s) |
| { |
| SSL2_STATE *s2; |
| unsigned char *rbuf, *wbuf; |
| |
| s2 = s->s2; |
| |
| rbuf = s2->rbuf; |
| wbuf = s2->wbuf; |
| |
| OPENSSL_port_memset(s2, 0, sizeof *s2); |
| |
| s2->rbuf = rbuf; |
| s2->wbuf = wbuf; |
| s2->clear_text = 1; |
| s->packet = s2->rbuf; |
| s->version = SSL2_VERSION; |
| s->packet_length = 0; |
| } |
| |
| long ssl2_ctrl(SSL *s, int cmd, long larg, void *parg) |
| { |
| int ret = 0; |
| |
| switch (cmd) { |
| case SSL_CTRL_GET_SESSION_REUSED: |
| ret = s->hit; |
| break; |
| case SSL_CTRL_CHECK_PROTO_VERSION: |
| return ssl3_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, larg, parg); |
| default: |
| break; |
| } |
| return (ret); |
| } |
| |
| long ssl2_callback_ctrl(SSL *s, int cmd, void (*fp) (void)) |
| { |
| return (0); |
| } |
| |
| long ssl2_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg) |
| { |
| return (0); |
| } |
| |
| long ssl2_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void)) |
| { |
| return (0); |
| } |
| |
| /* |
| * This function needs to check if the ciphers required are actually |
| * available |
| */ |
| const SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p) |
| { |
| SSL_CIPHER c; |
| const SSL_CIPHER *cp; |
| unsigned long id; |
| |
| id = 0x02000000L | ((unsigned long)p[0] << 16L) | |
| ((unsigned long)p[1] << 8L) | (unsigned long)p[2]; |
| c.id = id; |
| cp = OBJ_bsearch_ssl_cipher_id(&c, ssl2_ciphers, SSL2_NUM_CIPHERS); |
| if ((cp == NULL) || (cp->valid == 0)) |
| return NULL; |
| else |
| return cp; |
| } |
| |
| int ssl2_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p) |
| { |
| long l; |
| |
| if (p != NULL) { |
| l = c->id; |
| if ((l & 0xff000000) != 0x02000000 && l != SSL3_CK_FALLBACK_SCSV) |
| return (0); |
| p[0] = ((unsigned char)(l >> 16L)) & 0xFF; |
| p[1] = ((unsigned char)(l >> 8L)) & 0xFF; |
| p[2] = ((unsigned char)(l)) & 0xFF; |
| } |
| return (3); |
| } |
| |
| int ssl2_generate_key_material(SSL *s) |
| { |
| unsigned int i; |
| EVP_MD_CTX ctx; |
| unsigned char *km; |
| unsigned char c = '0'; |
| const EVP_MD *md5; |
| int md_size; |
| |
| md5 = EVP_md5(); |
| |
| # ifdef CHARSET_EBCDIC |
| c = os_toascii['0']; /* Must be an ASCII '0', not EBCDIC '0', see |
| * SSLv2 docu */ |
| # endif |
| EVP_MD_CTX_init(&ctx); |
| km = s->s2->key_material; |
| |
| if (s->session->master_key_length < 0 || |
| s->session->master_key_length > (int)sizeof(s->session->master_key)) { |
| SSLerr(SSL_F_SSL2_GENERATE_KEY_MATERIAL, ERR_R_INTERNAL_ERROR); |
| return 0; |
| } |
| md_size = EVP_MD_size(md5); |
| if (md_size < 0) |
| return 0; |
| for (i = 0; i < s->s2->key_material_length; i += md_size) { |
| if (((km - s->s2->key_material) + md_size) > |
| (int)sizeof(s->s2->key_material)) { |
| /* |
| * EVP_DigestFinal_ex() below would write beyond buffer |
| */ |
| SSLerr(SSL_F_SSL2_GENERATE_KEY_MATERIAL, ERR_R_INTERNAL_ERROR); |
| return 0; |
| } |
| |
| EVP_DigestInit_ex(&ctx, md5, NULL); |
| |
| OPENSSL_assert(s->session->master_key_length >= 0 |
| && s->session->master_key_length |
| <= (int)sizeof(s->session->master_key)); |
| EVP_DigestUpdate(&ctx, s->session->master_key, |
| s->session->master_key_length); |
| EVP_DigestUpdate(&ctx, &c, 1); |
| c++; |
| EVP_DigestUpdate(&ctx, s->s2->challenge, s->s2->challenge_length); |
| EVP_DigestUpdate(&ctx, s->s2->conn_id, s->s2->conn_id_length); |
| EVP_DigestFinal_ex(&ctx, km, NULL); |
| km += md_size; |
| } |
| |
| EVP_MD_CTX_cleanup(&ctx); |
| return 1; |
| } |
| |
| void ssl2_return_error(SSL *s, int err) |
| { |
| if (!s->error) { |
| s->error = 3; |
| s->error_code = err; |
| |
| ssl2_write_error(s); |
| } |
| } |
| |
| void ssl2_write_error(SSL *s) |
| { |
| unsigned char buf[3]; |
| int i, error; |
| |
| buf[0] = SSL2_MT_ERROR; |
| buf[1] = (s->error_code >> 8) & 0xff; |
| buf[2] = (s->error_code) & 0xff; |
| |
| /* state=s->rwstate;*/ |
| |
| error = s->error; /* number of bytes left to write */ |
| s->error = 0; |
| OPENSSL_assert(error >= 0 && error <= (int)sizeof(buf)); |
| i = ssl2_write(s, &(buf[3 - error]), error); |
| |
| /* if (i == error) s->rwstate=state; */ |
| |
| if (i < 0) |
| s->error = error; |
| else { |
| s->error = error - i; |
| |
| if (s->error == 0) |
| if (s->msg_callback) { |
| /* ERROR */ |
| s->msg_callback(1, s->version, 0, buf, 3, s, |
| s->msg_callback_arg); |
| } |
| } |
| } |
| |
| int ssl2_shutdown(SSL *s) |
| { |
| s->shutdown = (SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN); |
| return (1); |
| } |
| #else /* !OPENSSL_NO_SSL2 */ |
| |
| # if PEDANTIC |
| static void *dummy = &dummy; |
| # endif |
| |
| #endif |