Improve Windows compatibility

src/soter/ed25519/fe_cmov.c

@@ -1,5 +1,7 @@
 #include "fe.h"
 
+#include <limits.h>
+
 /*
 Replace (f,g) with (g,g) if b == 1;
 replace (f,g) with (f,g) if b == 0.
@@ -39,7 +41,7 @@ void fe_cmov(fe f,const fe g,unsigned int b)
   crypto_int32 x7 = f7 ^ g7;
   crypto_int32 x8 = f8 ^ g8;
   crypto_int32 x9 = f9 ^ g9;
-  b = -b;
+  b = UINT_MAX - b + 1;
   x0 &= b;
   x1 &= b;
   x2 &= b;

src/themis/secure_session.h

@@ -22,7 +22,21 @@
 #ifndef THEMIS_SECURE_SESSION_H
 #define THEMIS_SECURE_SESSION_H
 
+/*
+ * ssize_t is POSIX-specific (as is <sys/types.h>).
+ * Explicitly define ssize_t as signed counterpart of size_t on Windows.
+ */
+#if _WIN32
+#include <stddef.h>
+#include <stdint.h>
+#ifdef _WIN64
+typedef signed __int64 ssize_t;
+#else
+typedef signed int ssize_t;
+#endif
+#else
 #include <sys/types.h>
+#endif
 
 #include <soter/soter.h>
 

tests/soter/soter_rand_test.c

@@ -18,14 +18,15 @@
 
 #include <stdio.h>
 #include <string.h>
-#include <unistd.h>
 
 #ifndef NIST_STS_EXE_PATH
 #define NO_NIST_STS 1
 #endif
 
 #ifndef NO_NIST_STS
 
+#include <unistd.h>
+
 #define _TO_STRING_(_X_) (#_X_)
 #define TO_STRING(_X_) _TO_STRING_(_X_)
 

tests/themis/themis_secure_session.c

@@ -72,7 +72,13 @@ static client_info_t client = {
     client_pub,
     sizeof(client_pub),
     NULL,
-    {},
+    {
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+    },
 };
 static client_info_t server = {
     "server",
@@ -81,7 +87,13 @@ static client_info_t server = {
     server_pub,
     sizeof(server_pub),
     NULL,
-    {},
+    {
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+    },
 };
 
 /* Peers will communicate using shared memory */