Bump minimum OpenSSL version to 0.9.8

index 1501bc8..6199e61 100644
@@ -57,33 +57,6 @@
 #warning Some OpenSSL HMAC message digests now support key lengths greater than MAX_HMAC_KEY_LENGTH -- consider increasing MAX_HMAC_KEY_LENGTH
 #endif
 
-/*
- *
- * Workarounds for incompatibilites between OpenSSL libraries.
- * Right now we accept OpenSSL libraries from 0.9.5 to 0.9.7.
- *
- */
-
-#if SSLEAY_VERSION_NUMBER < 0x00907000L
-
-/* Workaround: EVP_CIPHER_mode is defined wrong in OpenSSL 0.9.6 but is fixed in 0.9.7 */
-#undef EVP_CIPHER_mode
-#define EVP_CIPHER_mode(e)                (((e)->flags) & EVP_CIPH_MODE)
-
-#define DES_cblock                        des_cblock
-#define DES_is_weak_key                   des_is_weak_key
-#define DES_check_key_parity              des_check_key_parity
-#define DES_set_odd_parity                des_set_odd_parity
-
-#define HMAC_CTX_init(ctx)                CLEAR (*ctx)
-#define HMAC_Init_ex(ctx,sec,len,md,impl) HMAC_Init(ctx, sec, len, md)
-#define HMAC_CTX_cleanup(ctx)             HMAC_cleanup(ctx)
-#define EVP_MD_CTX_cleanup(md)            CLEAR (*md)
-
-#define INFO_CALLBACK_SSL_CONST
-
-#endif
-
 static inline int
 EVP_CipherInit_ov (EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type, uint8_t *key, uint8_t *iv, int enc)
 {

index e7259f7..aea6076 100644
@@ -567,12 +567,7 @@ static const char usage_message[] =
   "                  root certificate.\n"
 #ifndef ENABLE_CRYPTO_POLARSSL
   "--capath dir    : A directory of trusted certificates (CAs"
-#if OPENSSL_VERSION_NUMBER >= 0x00907000L
   " and CRLs).\n"
-#else /* OPENSSL_VERSION_NUMBER >= 0x00907000L */
-  ").\n"
-  "                  WARNING: no support of CRL available with this version.\n"
-#endif /* OPENSSL_VERSION_NUMBER >= 0x00907000L */
 #endif /* ENABLE_CRYPTO_POLARSSL */
   "--dh file       : File containing Diffie Hellman parameters\n"
   "                  in .pem format (for --tls-server only).\n"

@@ -635,7 +630,6 @@ static const char usage_message[] =
   "--x509-track x  : Save peer X509 attribute x in environment for use by\n"
   "                  plugins and management interface.\n"
 #endif
-#if OPENSSL_VERSION_NUMBER >= 0x00907000L || ENABLE_CRYPTO_POLARSSL
   "--remote-cert-ku v ... : Require that the peer certificate was signed with\n"
   "                  explicit key usage, you can specify more than one value.\n"
   "                  value should be given in hex format.\n"

@@ -645,7 +639,6 @@ static const char usage_message[] =
   "--remote-cert-tls t: Require that peer certificate was signed with explicit\n"
   "                  key usage and extended key usage based on RFC3280 TLS rules.\n"
   "                  t = 'client' | 'server'.\n"
-#endif				/* OPENSSL_VERSION_NUMBER || ENABLE_CRYPTO_POLARSSL */
 #endif				/* ENABLE_SSL */
 #ifdef ENABLE_PKCS11
   "\n"

@@ -6765,7 +6758,6 @@ add_option (struct options *options,
 	  goto err;
 	}
     }
-#if OPENSSL_VERSION_NUMBER >= 0x00907000L || ENABLE_CRYPTO_POLARSSL
   else if (streq (p[0], "remote-cert-ku"))
     {
       int j;

@@ -6803,7 +6795,6 @@ add_option (struct options *options,
 	  goto err;
 	}
     }
-#endif	/* OPENSSL_VERSION_NUMBER */
   else if (streq (p[0], "tls-timeout") && p[1])
     {
       VERIFY_PERMISSION (OPT_P_TLS_PARMS);

index 68a1d59..2da7eba 100644
@@ -848,11 +848,7 @@ tls_ctx_load_ca (struct tls_root_ctx *ctx, const char *ca_file,
         msg(M_WARN, "WARNING: experimental option --capath %s", ca_path);
       else
         msg(M_SSLERR, "Cannot add lookup at --capath %s", ca_path);
-#if OPENSSL_VERSION_NUMBER >= 0x00907000L
       X509_STORE_set_flags (store, X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL);
-#else
-      msg(M_WARN, "WARNING: this version of OpenSSL cannot handle CRL files in capath");
-#endif
     }
 }
 

index 4dd3aa2..765b886 100644
@@ -337,8 +337,6 @@ verify_peer_cert(const struct tls_options *opt, openvpn_x509_cert_t *peer_cert,
 	}
     }
 
-#if OPENSSL_VERSION_NUMBER >= 0x00907000L || ENABLE_CRYPTO_POLARSSL
-
   /* verify certificate ku */
   if (opt->remote_cert_ku[0] != 0)
     {

@@ -367,8 +365,6 @@ verify_peer_cert(const struct tls_options *opt, openvpn_x509_cert_t *peer_cert,
 	}
     }
 
-#endif /* OPENSSL_VERSION_NUMBER */
-
   /* verify X509 name or username against --verify-x509-[user]name */
   if (opt->verify_x509_type != VERIFY_X509_NONE)
     {

index 1658cc0..7d2aae6 100644
@@ -189,8 +189,6 @@ void x509_setenv_track (const struct x509_track *xt, struct env_set *es,
  */
 result_t x509_verify_ns_cert_type(const openvpn_x509_cert_t *cert, const int usage);
 
-#if OPENSSL_VERSION_NUMBER >= 0x00907000L || ENABLE_CRYPTO_POLARSSL
-
 /*
  * Verify X.509 key usage extension field.
  *

@@ -219,8 +217,6 @@ result_t x509_verify_cert_ku (openvpn_x509_cert_t *x509, const unsigned * const
  */
 result_t x509_verify_cert_eku (openvpn_x509_cert_t *x509, const char * const expected_oid);
 
-#endif
-
 /*
  * Store the given certificate in pem format in a temporary file in tmp_dir
  *

index 658f5f3..cd2006f 100644
@@ -459,8 +459,6 @@ x509_verify_ns_cert_type(const openvpn_x509_cert_t *peer_cert, const int usage)
   return FAILURE;
 }
 
-#if OPENSSL_VERSION_NUMBER >= 0x00907000L
-
 result_t
 x509_verify_cert_ku (X509 *x509, const unsigned * const expected_ku,
     int expected_len)

@@ -566,8 +564,6 @@ x509_write_pem(FILE *peercert_file, X509 *peercert)
   return SUCCESS;
 }
 
-#endif /* OPENSSL_VERSION_NUMBER */
-
 /*
  * check peer cert against CRL
  */