initial commit

client.h

@@ -0,0 +1,85 @@
+/*
+    This file is part of udpxd.
+
+    Copyright (C) 2015 T.v.Dein.
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+    You can contact me by mail: <tom AT vondein DOT org>.
+*/
+
+#ifndef _HAVE_CLIENT_H
+#define _HAVE_CLIENT_H
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+
+#ifndef byte
+typedef uint8_t byte;
+#endif
+
+#include "uthash.h"
+
+#define MAXAGE         3600 /* seconds after which to close outgoing sockets and forget client src */
+
+struct _client_t {
+  int socket;               /* bind socket for outgoing traffic */
+  struct sockaddr_in *src;  /* client src (ip+port) from incoming socket */
+  struct sockaddr_in *dst;  /* client dst (ip+port) to outgoing socket */
+  uint64_t lastseen;        /* when did we recv last time from it */
+  UT_hash_handle hh;
+};
+typedef struct _client_t client_t;
+
+extern client_t *clients;
+extern int VERBOSE;
+
+/*  wrapper for HASH_ITER */
+/** Iterate over the list of clients.
+
+    Sample use:
+
+    @code
+    client_t *current = NULL;
+    client_iter(clientlist, current) {
+      dosomething(current)
+    }
+    @endcode
+*/
+#define client_iter(clients, client)               \
+  client_t *__c = NULL;				 \
+  HASH_ITER(hh, clients, client, __c)
+
+
+void client_del(client_t *client);
+void client_add(client_t *client);
+void client_seen(client_t *client);
+void client_close(client_t *client);
+void client_clean();
+
+client_t *client_find_fd(int fd);
+client_t *client_find_src(struct sockaddr_in *src);
+client_t *client_new(int fd, struct sockaddr_in *src, struct sockaddr_in *dst);
+
+
+#endif