Rewritten as a client-server application, similar to urxvt{d,c}.

1 files changed, 100 insertions, 0 deletions

diff --git a/Tc.c b/Tc.c
new file mode 100644
index 0000000..f54a2a2
--- /dev/null
+++ b/Tc.c
@@ -0,0 +1,100 @@
+/*
+ * Tc.c
+ * T client. Merely issues commands to the T daemon.
+ *
+ * T is a lean Terminal emulator.
+ *
+ * This file is part of T.
+ *
+ * T 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.
+ *
+ * T 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
+ * T. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "T.h"
+
+#define ARG_NEWWIN "-n"
+#define ARG_EXIT   "-x"
+
+static int open_conn();
+static TMessage parse_args(int argc, char *argv[]);
+static void usage();
+
+static int
+open_conn()
+{
+    struct sockaddr_un sock_addr;
+
+    int sock_fd = socket(AF_UNIX, SOCK_STREAM, 0);
+    if (sock_fd < 0)
+        err("Failed to create socket", EXIT_FAILURE);
+
+    memset(&sock_addr, 0, sizeof(sock_addr));
+    sock_addr.sun_family = AF_UNIX;
+    strncpy(sock_addr.sun_path, SOCKPATH, sizeof(sock_addr.sun_path) - 1);
+
+    if (connect(sock_fd, (struct sockaddr *) &sock_addr, sizeof(sock_addr)) < 0)
+        err("Failed to connect to daemon", EXIT_FAILURE);
+
+    return sock_fd;
+}
+
+static TMessage
+parse_args(int argc, char *argv[])
+{
+    if (argc == 1) /* No args means new window */
+        return MSG_NEWWIN;
+    if (argc > 2) /* More than 1 arg means derp */
+        return MSG_ERROR;
+    if (strcmp(argv[1], ARG_NEWWIN) == 0)
+        return MSG_NEWWIN;
+    if (strcmp(argv[1], ARG_EXIT) == 0)
+        return MSG_EXIT;
+
+    return MSG_ERROR;
+}
+
+static void
+usage()
+{
+    puts("usage:");
+    puts("\tTc [ARG]");
+    puts("\nwhere ARG is one of:");
+    puts("\t" ARG_NEWWIN "\tRequests a new window; default if ommited");
+    puts("\t" ARG_EXIT   "\tRequests daemon termination; only successful if there are no open windows");
+}
+
+int
+main(int argc, char *argv[])
+{
+    TMessage msg = parse_args(argc, argv);
+    if (msg == MSG_ERROR) {
+        usage();
+        return EXIT_FAILURE;
+    }
+
+    int sock_fd = open_conn();
+    if (write(sock_fd, &msg, sizeof(msg)) < 0)
+        err("Failed to send data", EXIT_FAILURE);
+    if (recv(sock_fd, &msg, sizeof(msg), 0) < 0)
+        err("Failed to recv data", EXIT_FAILURE);
+    close(sock_fd);
+
+    return msg == MSG_OK ? EXIT_SUCCESS : EXIT_FAILURE;
+}