Make i2r_sctlist static.
[openssl.git] / ssl / s2_lib.c
index 910b9fe..b37792f 100644 (file)
  * 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 <stdio.h>
-#include <openssl/rsa.h>
 #include <openssl/objects.h>
 #include <openssl/evp.h>
 #include <openssl/md5.h>
-#include "cryptlib.h"
 
-static long ssl2_default_timeout(void );
-const char *ssl2_version_str="SSLv2" OPENSSL_VERSION_PTEXT;
+const char ssl2_version_str[]="SSLv2" OPENSSL_VERSION_PTEXT;
 
 #define SSL2_NUM_CIPHERS (sizeof(ssl2_ciphers)/sizeof(SSL_CIPHER))
 
-OPENSSL_GLOBAL SSL_CIPHER ssl2_ciphers[]={
-/* NULL_WITH_MD5 v3 */
+/* 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_kRSA,
+       SSL_aRSA,
+       SSL_eNULL,
+       SSL_MD5,
+       SSL_SSLV2,
        SSL_EXPORT|SSL_EXP40|SSL_STRONG_NONE,
        0,
        0,
        0,
-       SSL_ALL_CIPHERS,
-       SSL_ALL_STRENGTHS,
        },
 #endif
-/* 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,
-       SSL_ALL_CIPHERS,
-       SSL_ALL_STRENGTHS,
-       },
+
 /* 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_kRSA,
+       SSL_aRSA,
+       SSL_RC4,
+       SSL_MD5,
+       SSL_SSLV2,
        SSL_NOT_EXP|SSL_MEDIUM,
        0,
        128,
        128,
-       SSL_ALL_CIPHERS,
-       SSL_ALL_STRENGTHS,
        },
-/* RC2_128_CBC_EXPORT40_WITH_MD5 */
+
+/* RC4_128_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,
+       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,
-       SSL_ALL_CIPHERS,
-       SSL_ALL_STRENGTHS,
        },
+
 /* 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_kRSA,
+       SSL_aRSA,
+       SSL_RC2,
+       SSL_MD5,
+       SSL_SSLV2,
        SSL_NOT_EXP|SSL_MEDIUM,
        0,
        128,
        128,
-       SSL_ALL_CIPHERS,
-       SSL_ALL_STRENGTHS,
        },
+
+/* 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_kRSA,
+       SSL_aRSA,
+       SSL_IDEA,
+       SSL_MD5,
+       SSL_SSLV2,
        SSL_NOT_EXP|SSL_MEDIUM,
        0,
        128,
        128,
-       SSL_ALL_CIPHERS,
-       SSL_ALL_STRENGTHS,
        },
+#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_kRSA,
+       SSL_aRSA,
+       SSL_DES,
+       SSL_MD5,
+       SSL_SSLV2,
        SSL_NOT_EXP|SSL_LOW,
        0,
        56,
        56,
-       SSL_ALL_CIPHERS,
-       SSL_ALL_STRENGTHS,
        },
+
 /* 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_kRSA,
+       SSL_aRSA,
+       SSL_3DES,
+       SSL_MD5,
+       SSL_SSLV2,
        SSL_NOT_EXP|SSL_HIGH,
        0,
        168,
        168,
-       SSL_ALL_CIPHERS,
-       SSL_ALL_STRENGTHS,
        },
+
+#if 0
 /* RC4_64_WITH_MD5 */
-#if 1
        {
        1,
        SSL2_TXT_RC4_64_WITH_MD5,
        SSL2_CK_RC4_64_WITH_MD5,
-       SSL_kRSA|SSL_aRSA|SSL_RC4|SSL_MD5|SSL_SSLV2,
+       SSL_kRSA,
+       SSL_aRSA,
+       SSL_RC4,
+       SSL_MD5,
+       SSL_SSLV2,
        SSL_NOT_EXP|SSL_LOW,
        SSL2_CF_8_BYTE_ENC,
        64,
        64,
-       SSL_ALL_CIPHERS,
-       SSL_ALL_STRENGTHS,
        },
 #endif
-/* NULL SSLeay (testing) */
+
 #if 0
+/* NULL SSLeay (testing) */
        {       
        0,
        SSL2_TXT_NULL,
        SSL2_CK_NULL,
        0,
+       0,
+       0,
+       0,
+       SSL_SSLV2,
        SSL_STRONG_NONE,
        0,
        0,
        0,
-       SSL_ALL_CIPHERS,
-       SSL_ALL_STRENGTHS,
        },
 #endif
 
 /* end of list :-) */
        };
 
-static SSL_METHOD SSLv2_data= {
-       SSL2_VERSION,
-       ssl2_new,       /* local */
-       ssl2_clear,     /* local */
-       ssl2_free,      /* local */
-       ssl_undefined_function,
-       ssl_undefined_function,
-       ssl2_read,
-       ssl2_peek,
-       ssl2_write,
-       ssl2_shutdown,
-       ssl_ok, /* NULL - renegotiate */
-       ssl_ok, /* NULL - check renegotiate */
-       ssl2_ctrl,      /* local */
-       ssl2_ctx_ctrl,  /* local */
-       ssl2_get_cipher_by_char,
-       ssl2_put_cipher_by_char,
-       ssl2_pending,
-       ssl2_num_ciphers,
-       ssl2_get_cipher,
-       ssl_bad_method,
-       ssl2_default_timeout,
-       &ssl3_undef_enc_method,
-       ssl_undefined_function,
-       ssl2_callback_ctrl,     /* local */
-       ssl2_ctx_callback_ctrl, /* local */
-       };
-
-static long ssl2_default_timeout(void)
+long ssl2_default_timeout(void)
        {
        return(300);
        }
 
-SSL_METHOD *sslv2_base_method(void)
-       {
-       return(&SSLv2_data);
-       }
-
 int ssl2_num_ciphers(void)
        {
        return(SSL2_NUM_CIPHERS);
        }
 
-SSL_CIPHER *ssl2_get_cipher(unsigned int u)
+const SSL_CIPHER *ssl2_get_cipher(unsigned int u)
        {
        if (u < SSL2_NUM_CIPHERS)
                return(&(ssl2_ciphers[SSL2_NUM_CIPHERS-1-u]));
@@ -262,7 +311,7 @@ SSL_CIPHER *ssl2_get_cipher(unsigned int u)
                return(NULL);
        }
 
-int ssl2_pending(SSL *s)
+int ssl2_pending(const SSL *s)
        {
        return SSL_in_init(s) ? 0 : s->s2->ract_data_length;
        }
@@ -348,7 +397,7 @@ long ssl2_ctrl(SSL *s, int cmd, long larg, void *parg)
        return(ret);
        }
 
-long ssl2_callback_ctrl(SSL *s, int cmd, void (*fp)())
+long ssl2_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
        {
        return(0);
        }
@@ -358,51 +407,24 @@ 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)())
+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 */
-SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p)
+const SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p)
        {
-       static int init=1;
-       static SSL_CIPHER *sorted[SSL2_NUM_CIPHERS];
-       SSL_CIPHER c,*cp= &c,**cpp;
+       SSL_CIPHER c;
+       const SSL_CIPHER *cp;
        unsigned long id;
-       int i;
-
-       if (init)
-               {
-               CRYPTO_w_lock(CRYPTO_LOCK_SSL);
-
-               if (init)
-                       {
-                       for (i=0; i<SSL2_NUM_CIPHERS; i++)
-                               sorted[i]= &(ssl2_ciphers[i]);
-
-                       qsort((char *)sorted,
-                               SSL2_NUM_CIPHERS,sizeof(SSL_CIPHER *),
-                               FP_ICC ssl_cipher_ptr_id_cmp);
-
-                       init=0;
-                       }
-                       
-               CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
-               }
 
        id=0x02000000L|((unsigned long)p[0]<<16L)|
                ((unsigned long)p[1]<<8L)|(unsigned long)p[2];
        c.id=id;
-       cpp=(SSL_CIPHER **)OBJ_bsearch((char *)&cp,
-               (char *)sorted,
-               SSL2_NUM_CIPHERS,sizeof(SSL_CIPHER *),
-               FP_ICC ssl_cipher_ptr_id_cmp);
-       if ((cpp == NULL) || !(*cpp)->valid)
-               return(NULL);
-       else
-               return(*cpp);
+       cp = OBJ_bsearch_ssl_cipher_id(&c, ssl2_ciphers, SSL2_NUM_CIPHERS);
+       return cp;
        }
 
 int ssl2_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p)
@@ -427,6 +449,7 @@ int ssl2_generate_key_material(SSL *s)
        unsigned char *km;
        unsigned char c='0';
        const EVP_MD *md5;
+       int md_size;
 
        md5 = EVP_md5();
 
@@ -437,15 +460,19 @@ int ssl2_generate_key_material(SSL *s)
        EVP_MD_CTX_init(&ctx);
        km=s->s2->key_material;
 
-       if (s->session->master_key_length < 0 || s->session->master_key_length > sizeof s->session->master_key)
+       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;
                }
-
-       for (i=0; i<s->s2->key_material_length; i += EVP_MD_size(md5))
+       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) + EVP_MD_size(md5)) > sizeof s->s2->key_material)
+               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);
@@ -456,14 +483,14 @@ int ssl2_generate_key_material(SSL *s)
 
                OPENSSL_assert(s->session->master_key_length >= 0
                    && s->session->master_key_length
-                   < sizeof s->session->master_key);
+                   < (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 += EVP_MD_size(md5);
+               km += md_size;
                }
 
        EVP_MD_CTX_cleanup(&ctx);
@@ -495,7 +522,7 @@ void ssl2_write_error(SSL *s)
 
        error=s->error; /* number of bytes left to write */
        s->error=0;
-       OPENSSL_assert(error >= 0 && error <= sizeof buf);
+       OPENSSL_assert(error >= 0 && error <= (int)sizeof(buf));
        i=ssl2_write(s,&(buf[3-error]),error);
 
 /*     if (i == error) s->rwstate=state; */