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Keep old method in case of an unsupported protocol
[openssl.git] / ssl / ssl_ciph.c
diff --git a/ssl/ssl_ciph.c b/ssl/ssl_ciph.c
index 87a9f68ce9d7b68906588ab5f61cb2ef892b91c8..8188ff5d95c1a949efa1cf1c89e91ba3465049b0 100644 (file)
--- a/ssl/ssl_ciph.c
+++ b/ssl/ssl_ciph.c
@@ -162,11 +162,13 @@
 #define SSL_ENC_CAMELLIA256_IDX        9
 #define SSL_ENC_GOST89_IDX     10
 #define SSL_ENC_SEED_IDX       11
-#define SSL_ENC_NUM_IDX                12
+#define SSL_ENC_AES128GCM_IDX  12
+#define SSL_ENC_AES256GCM_IDX  13
+#define SSL_ENC_NUM_IDX                14
 
 
 static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={
-       NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
+       NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL
        };
 
 #define SSL_COMP_NULL_IDX      0
@@ -180,28 +182,31 @@ static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL;
 #define SSL_MD_GOST94_IDX 2
 #define SSL_MD_GOST89MAC_IDX 3
 #define SSL_MD_SHA256_IDX 4
+#define SSL_MD_SHA384_IDX 5
 /*Constant SSL_MAX_DIGEST equal to size of digests array should be 
  * defined in the
  * ssl_locl.h */
 #define SSL_MD_NUM_IDX SSL_MAX_DIGEST 
 static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={
-       NULL,NULL,NULL,NULL,NULL
+       NULL,NULL,NULL,NULL,NULL,NULL
        };
 /* PKEY_TYPE for GOST89MAC is known in advance, but, because
  * implementation is engine-provided, we'll fill it only if
  * corresponding EVP_PKEY_METHOD is found 
  */
 static int  ssl_mac_pkey_id[SSL_MD_NUM_IDX]={
-       EVP_PKEY_HMAC,EVP_PKEY_HMAC,EVP_PKEY_HMAC,NID_undef,EVP_PKEY_HMAC
+       EVP_PKEY_HMAC,EVP_PKEY_HMAC,EVP_PKEY_HMAC,NID_undef,
+       EVP_PKEY_HMAC,EVP_PKEY_HMAC
        };
 
 static int ssl_mac_secret_size[SSL_MD_NUM_IDX]={
-       0,0,0,0,0
+       0,0,0,0,0,0
        };
 
 static int ssl_handshake_digest_flag[SSL_MD_NUM_IDX]={
        SSL_HANDSHAKE_MAC_MD5,SSL_HANDSHAKE_MAC_SHA,
-       SSL_HANDSHAKE_MAC_GOST94, 0, SSL_HANDSHAKE_MAC_SHA256
+       SSL_HANDSHAKE_MAC_GOST94, 0, SSL_HANDSHAKE_MAC_SHA256,
+       SSL_HANDSHAKE_MAC_SHA384
        };
 
 #define CIPHER_ADD     1
@@ -265,6 +270,7 @@ static const SSL_CIPHER cipher_aliases[]={
        {0,SSL_TXT_aGOST94,0,0,SSL_aGOST94,0,0,0,0,0,0,0},
        {0,SSL_TXT_aGOST01,0,0,SSL_aGOST01,0,0,0,0,0,0,0},
        {0,SSL_TXT_aGOST,0,0,SSL_aGOST94|SSL_aGOST01,0,0,0,0,0,0,0},
+       {0,SSL_TXT_aSRP,0,    0,SSL_aSRP,  0,0,0,0,0,0,0},
 
        /* aliases combining key exchange and server authentication */
        {0,SSL_TXT_EDH,0,     SSL_kEDH,~SSL_aNULL,0,0,0,0,0,0,0},
@@ -286,9 +292,10 @@ static const SSL_CIPHER cipher_aliases[]={
        {0,SSL_TXT_IDEA,0,    0,0,SSL_IDEA,  0,0,0,0,0,0},
        {0,SSL_TXT_SEED,0,    0,0,SSL_SEED,  0,0,0,0,0,0},
        {0,SSL_TXT_eNULL,0,   0,0,SSL_eNULL, 0,0,0,0,0,0},
-       {0,SSL_TXT_AES128,0,  0,0,SSL_AES128,0,0,0,0,0,0},
-       {0,SSL_TXT_AES256,0,  0,0,SSL_AES256,0,0,0,0,0,0},
-       {0,SSL_TXT_AES,0,     0,0,SSL_AES128|SSL_AES256,0,0,0,0,0,0},
+       {0,SSL_TXT_AES128,0,  0,0,SSL_AES128|SSL_AES128GCM,0,0,0,0,0,0},
+       {0,SSL_TXT_AES256,0,  0,0,SSL_AES256|SSL_AES256GCM,0,0,0,0,0,0},
+       {0,SSL_TXT_AES,0,     0,0,SSL_AES,0,0,0,0,0,0},
+       {0,SSL_TXT_AES_GCM,0, 0,0,SSL_AES128GCM|SSL_AES256GCM,0,0,0,0,0,0},
        {0,SSL_TXT_CAMELLIA128,0,0,0,SSL_CAMELLIA128,0,0,0,0,0,0},
        {0,SSL_TXT_CAMELLIA256,0,0,0,SSL_CAMELLIA256,0,0,0,0,0,0},
        {0,SSL_TXT_CAMELLIA   ,0,0,0,SSL_CAMELLIA128|SSL_CAMELLIA256,0,0,0,0,0,0},
@@ -300,11 +307,13 @@ static const SSL_CIPHER cipher_aliases[]={
        {0,SSL_TXT_GOST94,0,     0,0,0,SSL_GOST94,  0,0,0,0,0},
        {0,SSL_TXT_GOST89MAC,0,     0,0,0,SSL_GOST89MAC,  0,0,0,0,0},
        {0,SSL_TXT_SHA256,0,    0,0,0,SSL_SHA256,  0,0,0,0,0},
+       {0,SSL_TXT_SHA384,0,    0,0,0,SSL_SHA384,  0,0,0,0,0},
 
        /* protocol version aliases */
        {0,SSL_TXT_SSLV2,0,   0,0,0,0,SSL_SSLV2, 0,0,0,0},
        {0,SSL_TXT_SSLV3,0,   0,0,0,0,SSL_SSLV3, 0,0,0,0},
        {0,SSL_TXT_TLSV1,0,   0,0,0,0,SSL_TLSV1, 0,0,0,0},
+       {0,SSL_TXT_TLSV1_2,0, 0,0,0,0,SSL_TLSV1_2, 0,0,0,0},
 
        /* export flag */
        {0,SSL_TXT_EXP,0,     0,0,0,0,0,SSL_EXPORT,0,0,0},
@@ -383,6 +392,11 @@ void ssl_load_ciphers(void)
        ssl_cipher_methods[SSL_ENC_SEED_IDX]=
          EVP_get_cipherbyname(SN_seed_cbc);
 
+       ssl_cipher_methods[SSL_ENC_AES128GCM_IDX]=
+         EVP_get_cipherbyname(SN_aes_128_gcm);
+       ssl_cipher_methods[SSL_ENC_AES256GCM_IDX]=
+         EVP_get_cipherbyname(SN_aes_256_gcm);
+
        ssl_digest_methods[SSL_MD_MD5_IDX]=
                EVP_get_digestbyname(SN_md5);
        ssl_mac_secret_size[SSL_MD_MD5_IDX]=
@@ -412,6 +426,10 @@ void ssl_load_ciphers(void)
                EVP_get_digestbyname(SN_sha256);
        ssl_mac_secret_size[SSL_MD_SHA256_IDX]=
                EVP_MD_size(ssl_digest_methods[SSL_MD_SHA256_IDX]);
+       ssl_digest_methods[SSL_MD_SHA384_IDX]=
+               EVP_get_digestbyname(SN_sha384);
+       ssl_mac_secret_size[SSL_MD_SHA384_IDX]=
+               EVP_MD_size(ssl_digest_methods[SSL_MD_SHA384_IDX]);
        }
 #ifndef OPENSSL_NO_COMP
 
@@ -454,6 +472,7 @@ static void load_builtin_compressions(void)
                                                sk_SSL_COMP_push(ssl_comp_methods,comp);
                                                }
                                        }
+                                       sk_SSL_COMP_sort(ssl_comp_methods);
                                }
                        MemCheck_on();
                        }
@@ -533,12 +552,18 @@ int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
        case SSL_SEED:
                i=SSL_ENC_SEED_IDX;
                break;
+       case SSL_AES128GCM:
+               i=SSL_ENC_AES128GCM_IDX;
+               break;
+       case SSL_AES256GCM:
+               i=SSL_ENC_AES256GCM_IDX;
+               break;
        default:
                i= -1;
                break;
                }
 
-       if ((i < 0) || (i > SSL_ENC_NUM_IDX))
+       if ((i < 0) || (i >= SSL_ENC_NUM_IDX))
                *enc=NULL;
        else
                {
@@ -559,6 +584,9 @@ int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
        case SSL_SHA256:
                i=SSL_MD_SHA256_IDX;
                break;
+       case SSL_SHA384:
+               i=SSL_MD_SHA384_IDX;
+               break;
        case SSL_GOST94:
                i = SSL_MD_GOST94_IDX;
                break;
@@ -569,22 +597,50 @@ int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc,
                i= -1;
                break;
                }
-       if ((i < 0) || (i > SSL_MD_NUM_IDX))
+       if ((i < 0) || (i >= SSL_MD_NUM_IDX))
        {
                *md=NULL; 
                if (mac_pkey_type!=NULL) *mac_pkey_type = NID_undef;
                if (mac_secret_size!=NULL) *mac_secret_size = 0;
-
+               if (c->algorithm_mac == SSL_AEAD)
+                       mac_pkey_type = NULL;
        }
        else
        {
                *md=ssl_digest_methods[i];
                if (mac_pkey_type!=NULL) *mac_pkey_type = ssl_mac_pkey_id[i];
                if (mac_secret_size!=NULL) *mac_secret_size = ssl_mac_secret_size[i];
-       }       
+       }
+
+       if ((*enc != NULL) &&
+           (*md != NULL || (EVP_CIPHER_flags(*enc)&EVP_CIPH_FLAG_AEAD_CIPHER)) &&
+           (!mac_pkey_type||*mac_pkey_type != NID_undef))
+               {
+               const EVP_CIPHER *evp;
+
+               if (s->ssl_version>>8 != TLS1_VERSION_MAJOR ||
+                   s->ssl_version < TLS1_VERSION)
+                       return 1;
+
+#ifdef OPENSSL_FIPS
+               if (FIPS_mode())
+                       return 1;
+#endif
 
-       if ((*enc != NULL) && (*md != NULL) && (!mac_pkey_type||*mac_pkey_type != NID_undef))
+               if      (c->algorithm_enc == SSL_RC4 &&
+                        c->algorithm_mac == SSL_MD5 &&
+                        (evp=EVP_get_cipherbyname("RC4-HMAC-MD5")))
+                       *enc = evp, *md = NULL;
+               else if (c->algorithm_enc == SSL_AES128 &&
+                        c->algorithm_mac == SSL_SHA1 &&
+                        (evp=EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1")))
+                       *enc = evp, *md = NULL;
+               else if (c->algorithm_enc == SSL_AES256 &&
+                        c->algorithm_mac == SSL_SHA1 &&
+                        (evp=EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1")))
+                       *enc = evp, *md = NULL;
                return(1);
+               }
        else
                return(0);
        }
@@ -702,6 +758,8 @@ static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, un
        *enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0;
        *enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128:0;
        *enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256:0;
+       *enc |= (ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] == NULL) ? SSL_AES128GCM:0;
+       *enc |= (ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] == NULL) ? SSL_AES256GCM:0;
        *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA128:0;
        *enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA256:0;
        *enc |= (ssl_cipher_methods[SSL_ENC_GOST89_IDX] == NULL) ? SSL_eGOST2814789CNT:0;
@@ -710,6 +768,7 @@ static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, un
        *mac |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0;
        *mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0;
        *mac |= (ssl_digest_methods[SSL_MD_SHA256_IDX] == NULL) ? SSL_SHA256:0;
+       *mac |= (ssl_digest_methods[SSL_MD_SHA384_IDX] == NULL) ? SSL_SHA384:0;
        *mac |= (ssl_digest_methods[SSL_MD_GOST94_IDX] == NULL) ? SSL_GOST94:0;
        *mac |= (ssl_digest_methods[SSL_MD_GOST89MAC_IDX] == NULL || ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]==NID_undef)? SSL_GOST89MAC:0;
 
@@ -867,7 +926,7 @@ static void ssl_cipher_apply_rule(unsigned long cipher_id,
                int rule, int strength_bits,
                CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p)
        {
-       CIPHER_ORDER *head, *tail, *curr, *curr2, *last;
+       CIPHER_ORDER *head, *tail, *curr, *next, *last;
        const SSL_CIPHER *cp;
        int reverse = 0;
 
@@ -884,21 +943,25 @@ static void ssl_cipher_apply_rule(unsigned long cipher_id,
 
        if (reverse)
                {
-               curr = tail;
+               next = tail;
                last = head;
                }
        else
                {
-               curr = head;
+               next = head;
                last = tail;
                }
 
-       curr2 = curr;
+       curr = NULL;
        for (;;)
                {
-               if ((curr == NULL) || (curr == last)) break;
-               curr = curr2;
-               curr2 = reverse ? curr->prev : curr->next;
+               if (curr == last) break;
+
+               curr = next;
+
+               if (curr == NULL) break;
+
+               next = reverse ? curr->prev : curr->next;
 
                cp = curr->cipher;
 
@@ -1093,9 +1156,9 @@ static int ssl_cipher_process_rulestr(const char *rule_str,
                        while ( ((ch >= 'A') && (ch <= 'Z')) ||
                                ((ch >= '0') && (ch <= '9')) ||
                                ((ch >= 'a') && (ch <= 'z')) ||
-                                (ch == '-'))
+                                (ch == '-') || (ch == '.'))
 #else
-                       while ( isalnum(ch) || (ch == '-'))
+                       while ( isalnum(ch) || (ch == '-') || (ch == '.'))
 #endif
                                 {
                                 ch = *(++l);
@@ -1503,6 +1566,8 @@ char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
                ver="SSLv2";
        else if (alg_ssl & SSL_SSLV3)
                ver="SSLv3";
+       else if (alg_ssl & SSL_TLSV1_2)
+               ver="TLSv1.2";
        else
                ver="unknown";
 
@@ -1538,6 +1603,9 @@ char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
        case SSL_kSRP:
                kx="SRP";
                break;
+       case SSL_kGOST:
+               kx="GOST";
+               break;
        default:
                kx="unknown";
                }
@@ -1568,6 +1636,15 @@ char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
        case SSL_aPSK:
                au="PSK";
                break;
+       case SSL_aSRP:
+               au="SRP";
+               break;
+       case SSL_aGOST94:
+               au="GOST94";
+               break;
+       case SSL_aGOST01:
+               au="GOST01";
+               break;
        default:
                au="unknown";
                break;
@@ -1600,6 +1677,12 @@ char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
        case SSL_AES256:
                enc="AES(256)";
                break;
+       case SSL_AES128GCM:
+               enc="AESGCM(128)";
+               break;
+       case SSL_AES256GCM:
+               enc="AESGCM(256)";
+               break;
        case SSL_CAMELLIA128:
                enc="Camellia(128)";
                break;
@@ -1609,6 +1692,9 @@ char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
        case SSL_SEED:
                enc="SEED(128)";
                break;
+       case SSL_eGOST2814789CNT:
+               enc="GOST89(256)";
+               break;
        default:
                enc="unknown";
                break;
@@ -1625,6 +1711,18 @@ char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
        case SSL_SHA256:
                mac="SHA256";
                break;
+       case SSL_SHA384:
+               mac="SHA384";
+               break;
+       case SSL_AEAD:
+               mac="AEAD";
+               break;
+       case SSL_GOST89MAC:
+               mac="GOST89";
+               break;
+       case SSL_GOST94:
+               mac="GOST94";
+               break;
        default:
                mac="unknown";
                break;
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