Created fifoinfo and sandbarinfoHEADmaster

1 files changed, 94 insertions, 0 deletions

diff --git a/src/fifoinfo.c b/src/fifoinfo.c
new file mode 100644
index 0000000..f4cc349
--- /dev/null
+++ b/src/fifoinfo.c
@@ -0,0 +1,94 @@
+#include "signal.h"
+#include "text.h"
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <assert.h>
+
+struct state {
+    int fd;
+    struct text * text;
+};
+
+static int
+open_fifo(const char * path)
+{
+    if (access(path, F_OK) != 0) {
+        printf("FIFO doesn't exist\n");
+        return -1;
+    }
+
+    if (access(path, W_OK) != 0) {
+        printf("FIFO not writable\n");
+        return -1;
+    }
+
+    return open(path, O_WRONLY);
+}
+
+
+static int
+init_state(struct state * s, const char * path)
+{
+    s->text = NULL;
+
+    s->fd = open_fifo(path);
+    if(s->fd < 1) return -1;
+
+    s->text = text_new();
+    return 0;
+}
+
+static void
+deinit_state(struct state * s)
+{
+    if(s->fd > 0) close(s->fd);
+    if(s->text) text_free(s->text);
+}
+
+static void
+update_status(struct state * s)
+{
+    const size_t
+        msg_len = TEXT_SIZE + 3;
+
+    size_t actual_len;
+
+    char msg[msg_len];
+
+    text_update(s->text);
+    snprintf(msg, msg_len, " %s\n", text_get_val(s->text));
+
+    actual_len = strlen(msg);
+    write(s->fd, msg, actual_len);
+}
+
+static void
+run_loop(struct state * s)
+{
+    while(signal_running) {
+        update_status(s);
+        usleep(1000 * 800);
+    }
+}
+
+int main(int argc, char ** argv)
+{
+    int rc;
+    struct state s;
+
+    assert(argc == 2);
+
+    signal_setup_actions();
+
+    rc = init_state(&s, argv[1]);
+
+    if(rc == 0) run_loop(&s);
+
+    deinit_state(&s);
+
+    return 0;
+}