system: add BConnectionGeneric.h

system/BConnectionGeneric.h

@@ -0,0 +1,111 @@
+/**
+ * @file BConnectionGeneric.h
+ * @author Ambroz Bizjak <ambrop7@gmail.com>
+ * 
+ * @section LICENSE
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. Neither the name of the author nor the
+ *    names of its contributors may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ * 
+ * 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 AUTHOR 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.
+ */
+
+#ifndef BADVPN_BCONNECTION_GENERIC_H
+#define BADVPN_BCONNECTION_GENERIC_H
+
+#include <misc/debug.h>
+#include <base/BLog.h>
+#include <system/BConnection.h>
+
+#define BCONNECTION_ADDR_TYPE_BADDR 1
+#define BCONNECTION_ADDR_TYPE_UNIX 2
+
+struct BConnection_addr {
+    int type;
+    union {
+        BAddr baddr;
+        const char *unix_socket_path;
+    } u;
+};
+
+static struct BConnection_addr BConnection_addr_baddr (BAddr baddr)
+{
+    struct BConnection_addr addr;
+    addr.type = BCONNECTION_ADDR_TYPE_BADDR;
+    addr.u.baddr = baddr;
+    return addr;
+}
+
+static struct BConnection_addr BConnection_addr_unix (const char *unix_socket_path)
+{
+    struct BConnection_addr addr;
+    addr.type = BCONNECTION_ADDR_TYPE_UNIX;
+    addr.u.unix_socket_path = unix_socket_path;
+    return addr;
+}
+
+static int BListener_InitGeneric (BListener *o, struct BConnection_addr addr, BReactor *reactor, void *user,
+                                  BListener_handler handler) WARN_UNUSED;
+static int BConnector_InitGeneric (BConnector *o, struct BConnection_addr addr, BReactor *reactor, void *user,
+                                   BConnector_handler handler) WARN_UNUSED;
+
+static int BListener_InitGeneric (BListener *o, struct BConnection_addr addr, BReactor *reactor, void *user,
+                                  BListener_handler handler)
+{
+    ASSERT(handler)
+    BNetwork_Assert();
+    
+    switch (addr.type) {
+        case BCONNECTION_ADDR_TYPE_BADDR:
+            return BListener_Init(o, addr.u.baddr, reactor, user, handler);
+        case BCONNECTION_ADDR_TYPE_UNIX:
+#ifdef BADVPN_USE_WINAPI
+            BLog_LogToChannel(BLOG_CHANNEL_BConnection, BLOG_ERROR, "unix sockets not supported");
+            return 0;
+#else
+            return BListener_InitUnix(o, addr.u.unix_socket_path, reactor, user, handler);
+#endif
+        default:
+            ASSERT(0);
+    }
+}
+
+static int BConnector_InitGeneric (BConnector *o, struct BConnection_addr addr, BReactor *reactor, void *user,
+                                   BConnector_handler handler)
+{
+    ASSERT(handler)
+    BNetwork_Assert();
+    
+    switch (addr.type) {
+        case BCONNECTION_ADDR_TYPE_BADDR:
+            return BConnector_Init(o, addr.u.baddr, reactor, user, handler);
+        case BCONNECTION_ADDR_TYPE_UNIX:
+#ifdef BADVPN_USE_WINAPI
+            BLog_LogToChannel(BLOG_CHANNEL_BConnection, BLOG_ERROR, "unix sockets not supported");
+            return 0;
+#else
+            return BConnector_InitUnix(o, addr.u.unix_socket_path, reactor, user, handler);
+#endif
+        default:
+            ASSERT(0);
+    }
+}
+
+#endif