net/StaticSocketAdress: new class wrapping struct sockaddr_storage

1 files changed, 78 insertions, 0 deletions

diff --git a/src/net/StaticSocketAddress.cxx b/src/net/StaticSocketAddress.cxx
new file mode 100644
index 000000000..15e8a9e44
--- /dev/null
+++ b/src/net/StaticSocketAddress.cxx
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2012-2015 Max Kellermann <max@duempel.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "StaticSocketAddress.hxx"
+
+#include <algorithm>
+
+#include <assert.h>
+#include <string.h>
+
+#ifdef WIN32
+#include <ws2tcpip.h>
+#else
+#include <sys/un.h>
+#include <sys/socket.h>
+#endif
+
+StaticSocketAddress &
+StaticSocketAddress::operator=(SocketAddress other)
+{
+	size = std::min(size_t(other.GetSize()), GetCapacity());
+	memcpy(&address, other.GetAddress(), size);
+	return *this;
+}
+
+bool
+StaticSocketAddress::operator==(const StaticSocketAddress &other) const
+{
+	return size == other.size &&
+		memcmp(&address, &other.address, size) == 0;
+}
+
+#ifdef HAVE_UN
+
+void
+StaticSocketAddress::SetLocal(const char *path)
+{
+	auto &sun = reinterpret_cast<struct sockaddr_un &>(address);
+
+	const size_t path_length = strlen(path);
+
+	// TODO: make this a runtime check
+	assert(path_length < sizeof(sun.sun_path));
+
+	sun.sun_family = AF_LOCAL;
+	memcpy(sun.sun_path, path, path_length + 1);
+
+	/* note: Bionic doesn't provide SUN_LEN() */
+	size = SUN_LEN(&sun);
+}
+
+#endif