1 files changed, 132 insertions, 0 deletions
diff --git a/modules/tcp/TCPServer.cc b/modules/tcp/TCPServer.cc
new file mode 100644
index 0000000..55f8511
--- /dev/null
+++ b/modules/tcp/TCPServer.cc
@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 2021-2022 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "TCPServer.h"
+
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <cstdlib>
+#include <stdexcept>
+
+#include "aitt_internal.h"
+
+#define BACKLOG 10  // Accept only 10 simultaneously connections by default
+
+TCP::Server::Server(const std::string &host, unsigned short &port)
+      : handle(-1), addr(nullptr), addrlen(0)
+{
+    int ret = 0;
+
+    do {
+        handle = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0);
+        if (handle < 0)
+            break;
+
+        addrlen = sizeof(sockaddr_in);
+        addr = static_cast<sockaddr *>(calloc(1, sizeof(sockaddr_in)));
+        if (!addr)
+            break;
+
+        sockaddr_in *inet_addr = reinterpret_cast<sockaddr_in *>(addr);
+        if (!inet_pton(AF_INET, host.c_str(), &inet_addr->sin_addr)) {
+            ret = EINVAL;
+            break;
+        }
+
+        inet_addr->sin_port = htons(port);
+        inet_addr->sin_family = AF_INET;
+
+        int on = 1;
+        ret = setsockopt(handle, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+        if (ret < 0)
+            break;
+
+        ret = bind(handle, addr, addrlen);
+        if (ret < 0)
+            break;
+
+        if (!port) {
+            if (getsockname(handle, addr, &addrlen) < 0)
+                break;
+            port = ntohs(inet_addr->sin_port);
+        }
+
+        ret = listen(handle, BACKLOG);
+        if (ret < 0)
+            break;
+
+        return;
+    } while (0);
+
+    if (ret <= 0)
+        ret = errno;
+
+    free(addr);
+
+    if (handle >= 0 && close(handle) < 0)
+        ERR_CODE(errno, "close");
+
+    throw std::runtime_error(strerror(ret));
+}
+
+TCP::Server::~Server(void)
+{
+    if (handle < 0)
+        return;
+
+    free(addr);
+    if (close(handle) < 0)
+        ERR_CODE(errno, "close");
+}
+
+std::unique_ptr<TCP> TCP::Server::AcceptPeer(void)
+{
+    sockaddr *peerAddr;
+    socklen_t szAddr = sizeof(sockaddr_in);
+    int peerHandle;
+
+    peerAddr = static_cast<sockaddr *>(calloc(1, szAddr));
+    if (!peerAddr)
+        throw std::runtime_error(strerror(errno));
+
+    peerHandle = accept(handle, peerAddr, &szAddr);
+    if (peerHandle < 0) {
+        free(peerAddr);
+        throw std::runtime_error(strerror(errno));
+    }
+
+    return std::unique_ptr<TCP>(new TCP(peerHandle, peerAddr, szAddr));
+}
+
+int TCP::Server::GetHandle(void)
+{
+    return handle;
+}
+
+unsigned short TCP::Server::GetPort(void)
+{
+    sockaddr_in addr;
+    socklen_t addrlen = sizeof(addr);
+
+    if (getsockname(handle, reinterpret_cast<sockaddr *>(&addr), &addrlen) < 0)
+        throw std::runtime_error(strerror(errno));
+
+    return ntohs(addr.sin_port);
+}