further refactoring, working libtls-standalone

libtls-standalone/include/string.h

@@ -17,12 +17,57 @@
 #include <strings.h>
 #endif
 
-#ifndef HAVE_EXPLICIT_BZERO
-void explicit_bzero(void *, size_t);
+#ifndef HAVE_STRLCPY
+size_t strlcpy(char *dst, const char *src, size_t siz);
+#endif
+
+#ifndef HAVE_STRLCAT
+size_t strlcat(char *dst, const char *src, size_t siz);
+#endif
+
+#ifndef HAVE_STRNDUP
+char * strndup(const char *str, size_t maxlen);
+/* the only user of strnlen is strndup, so only build it if needed */
+#ifndef HAVE_STRNLEN
+size_t strnlen(const char *str, size_t maxlen);
+#endif
 #endif
 
 #ifndef HAVE_STRSEP
 char *strsep(char **stringp, const char *delim);
 #endif
 
+#ifndef HAVE_EXPLICIT_BZERO
+void explicit_bzero(void *, size_t);
+#endif
+
+#ifndef HAVE_TIMINGSAFE_BCMP
+int timingsafe_bcmp(const void *b1, const void *b2, size_t n);
+#endif
+
+#ifndef HAVE_TIMINGSAFE_MEMCMP
+int timingsafe_memcmp(const void *b1, const void *b2, size_t len);
+#endif
+
+#ifndef HAVE_MEMMEM
+void * memmem(const void *big, size_t big_len, const void *little,
+	size_t little_len);
+#endif
+
+#ifdef _WIN32
+#include <errno.h>
+
+static inline char  *
+posix_strerror(int errnum)
+{
+	if (errnum == ECONNREFUSED) {
+		return "Connection refused";
+	}
+	return strerror(errnum);
+}
+
+#define strerror(errnum) posix_strerror(errnum)
+
+#endif
+
 #endif