lib: Initial messages for the IRM

This provides the initial messages to be passed between the irmd and
libouroboros-irm.

1 files changed, 94 insertions, 0 deletions

diff --git a/src/lib/sockets.c b/src/lib/sockets.c
new file mode 100644
index 00000000..8917f55a
--- /dev/null
+++ b/src/lib/sockets.c
@@ -0,0 +1,94 @@
+/*
+ * Ouroboros - Copyright (C) 2016
+ *
+ * The sockets layer to communicate between daemons
+ *
+ *    Sander Vrijders <sander.vrijders@intec.ugent.be>
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#define OUROBOROS_PREFIX "libouroboros-sockets"
+
+#include <ouroboros/logs.h>
+#include <ouroboros/common.h>
+#include <ouroboros/sockets.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/stat.h>
+#include <string.h>
+
+int client_socket_open(char * file_name)
+{
+        int sockfd;
+        struct sockaddr_un serv_addr;
+
+        sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
+        if (sockfd < 0) {
+                LOG_ERR("Failed to open socket");
+                return -1;
+        }
+
+        serv_addr.sun_family = AF_UNIX;
+        sprintf(serv_addr.sun_path, file_name);
+
+        if (connect(sockfd,
+                    (struct sockaddr *) &serv_addr,
+                    sizeof(serv_addr))) {
+                LOG_ERR("Failed to connect to server");
+                return -1;
+        }
+
+        return sockfd;
+}
+
+int server_socket_open(char * file_name)
+{
+        int sockfd;
+        struct sockaddr_un serv_addr;
+        struct stat sb;
+
+        if (!stat(file_name, &sb)) {
+                /* File exists */
+                if (unlink(file_name)) {
+                        LOG_ERR("Failed to unlink filename: %s",
+                                strerror(errno));
+                        return -1;
+                }
+        }
+
+        sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
+        if (sockfd < 0) {
+                LOG_ERR("Failed to open socket");
+                return -1;
+        }
+
+        serv_addr.sun_family = AF_UNIX;
+        sprintf(serv_addr.sun_path, file_name);
+
+        if (bind(sockfd,
+                 (struct sockaddr *) &serv_addr,
+                 sizeof(serv_addr))) {
+                LOG_ERR("Failed to bind socket");
+                return -1;
+        }
+
+        if (listen(sockfd, 0)) {
+                LOG_ERR("Failed to listen to socket");
+                return -1;
+        }
+
+        return sockfd;
+}