tidying: char signedness

[exim.git] / src / src / tls-openssl.c

diff --git a/src/src/tls-openssl.c b/src/src/tls-openssl.c
index 83594c9731db8e7da88916a2d4232f1018ac09fb..c18cb1c8514516209e31dd81ad3d7b2ce9f07cb9 100644 (file)
--- a/src/src/tls-openssl.c
+++ b/src/src/tls-openssl.c
@@ -2,7 +2,7 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2015 */
+/* Copyright (c) University of Cambridge 1995 - 2016 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 /* Portions Copyright (c) The OpenSSL Project 1999 */
@@ -74,7 +74,10 @@ functions from the OpenSSL library. */
     && (OPENSSL_VERSION_NUMBER & 0x0000ff000L) >= 0x000002000L
 #  define EXIM_HAVE_OPENSSL_CHECKHOST
 # endif
+#endif
 
+#if !defined(LIBRESSL_VERSION_NUMBER) \
+    || LIBRESSL_VERSION_NUMBER >= 0x20010000L
 # if !defined(OPENSSL_NO_ECDH)
 #  if OPENSSL_VERSION_NUMBER >= 0x0090800fL
 #   define EXIM_HAVE_ECDH
@@ -266,6 +269,7 @@ DEBUG(D_tls) debug_printf("Generating %d bit RSA key...\n", keylength);
 
 #ifdef EXIM_HAVE_RSA_GENKEY_EX
 if (  !BN_set_word(bn, (unsigned long)RSA_F4)
+   || !(rsa_key = RSA_new())
    || !RSA_generate_key_ex(rsa_key, keylength, bn, NULL)
    )
 #else
@@ -2361,27 +2365,28 @@ while (left > 0)
   switch (error)
     {
     case SSL_ERROR_SSL:
-    ERR_error_string(ERR_get_error(), ssl_errstring);
-    log_write(0, LOG_MAIN, "TLS error (SSL_write): %s", ssl_errstring);
-    return -1;
+      ERR_error_string(ERR_get_error(), ssl_errstring);
+      log_write(0, LOG_MAIN, "TLS error (SSL_write): %s", ssl_errstring);
+      return -1;
 
     case SSL_ERROR_NONE:
-    left -= outbytes;
-    buff += outbytes;
-    break;
+      left -= outbytes;
+      buff += outbytes;
+      break;
 
     case SSL_ERROR_ZERO_RETURN:
-    log_write(0, LOG_MAIN, "SSL channel closed on write");
-    return -1;
+      log_write(0, LOG_MAIN, "SSL channel closed on write");
+      return -1;
 
     case SSL_ERROR_SYSCALL:
-    log_write(0, LOG_MAIN, "SSL_write: (from %s) syscall: %s",
-      sender_fullhost ? sender_fullhost : US"<unknown>",
-      strerror(errno));
+      log_write(0, LOG_MAIN, "SSL_write: (from %s) syscall: %s",
+       sender_fullhost ? sender_fullhost : US"<unknown>",
+       strerror(errno));
+      return -1;
 
     default:
-    log_write(0, LOG_MAIN, "SSL_write error %d", error);
-    return -1;
+      log_write(0, LOG_MAIN, "SSL_write error %d", error);
+      return -1;
     }
   }
 return len;
@@ -2818,6 +2823,7 @@ for (s=option_spec; *s != '\0'; /**/)
   keep_c = *end;
   *end = '\0';
   item_parsed = tls_openssl_one_option_parse(s, &item);
+  *end = keep_c;
   if (!item_parsed)
     {
     DEBUG(D_tls) debug_printf("openssl option setting unrecognised: \"%s\"\n", s);
@@ -2829,7 +2835,6 @@ for (s=option_spec; *s != '\0'; /**/)
     result |= item;
   else
     result &= ~item;
-  *end = keep_c;
   s = end;
   }