Add message queue and controller source program

1 files changed, 54 insertions, 0 deletions

diff --git a/status_update.c b/status_update.c
new file mode 100644
index 0000000..e4abda8
--- /dev/null
+++ b/status_update.c
@@ -0,0 +1,54 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <err.h>
+#include <fcntl.h>
+#include <mqueue.h>
+
+#include "config.h"
+
+int main (int argc, char* argv[]) {
+  struct message_t msg = {.action = nop, .element = ELEMENT_INVALID};
+  char* queue_identifier;
+
+
+  if (argc != 3) {
+    errx(EXIT_FAILURE, "Invalid argument(s): %s ACTION ELEMENT\n", argv[0]);
+  }
+
+  if (!strcmp(argv[1], "update")) {
+    msg.action = update;
+  } else {
+    errx(EXIT_FAILURE, "Invalid action\n");
+  }
+
+#define ELEMENT(name, _arg, _minutes, _seconds) \
+  else if (!strcmp(argv[2], #name)) { \
+    msg.element = ELEMENT_##name; \
+  }
+
+  if (!strcmp(argv[2], "all")) {
+    msg.element = ELEMENT_MAX; \
+  }
+#include "config.def.h"
+#undef ELEMENT
+  else {
+    errx(EXIT_FAILURE, "Invalid element\n");
+  }
+
+  queue_identifier = "/status";
+  mqd_t msg_queue_id = mq_open(queue_identifier, O_WRONLY);
+  if (msg_queue_id == -1) {
+    errx(EXIT_FAILURE, "Failed to open mq\n");
+  }
+
+
+  if (mq_send(msg_queue_id, (char*)&msg, sizeof(struct message_t), 0) == -1) {
+    err(EXIT_FAILURE, "Failed to send message\n");
+  }
+
+  mq_close(msg_queue_id);
+
+  return 0;
+}