1 files changed, 82 insertions, 0 deletions
diff --git a/src/dtmffifo.c b/src/dtmffifo.c
new file mode 100644
index 0000000..54a1f62
--- /dev/null
+++ b/src/dtmffifo.c
@@ -0,0 +1,82 @@
+#include <unistd.h>
+#include <libdaemon/dlog.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <stdio.h>
+#include <sys/stat.h>
+
+#include "dtmffifo.h"
+
+struct dtmf_fifo* dtmf_fifo_new(void) {
+    struct dtmf_fifo *d = NULL;
+    char p[PATH_MAX];
+
+    d = malloc(sizeof(struct dtmf_fifo));
+    assert(d);
+    memset(d, 0, sizeof(struct dtmf_fifo));
+    d->fd = -1;
+
+    d->dir = strdup("/tmp/ivamd.XXXXXX");
+    assert(d->dir);
+
+    if (!mkdtemp(d->dir)) {
+        daemon_log(LOG_ERR, "Failed to create temporary directory '%s': %s", d->dir, strerror(errno));
+        goto fail;
+    }
+
+    snprintf(p, sizeof(p), "%s/%s", d->dir, "dtmf");
+    d->fname = strdup(p);
+    assert(d->fname);
+
+    if (mkfifo(d->fname, 0700) != 0) {
+        daemon_log(LOG_ERR, "Failed to create FIFO '%s': %s", d->fname, strerror(errno));
+        goto fail;
+    }
+    
+    if ((d->fd = open(d->fname, O_RDWR|O_NDELAY)) < 0) {
+        daemon_log(LOG_ERR, "Failed to open FIFO '%s': %s", d->fname, strerror(errno));
+        goto fail;
+    }
+        
+    daemon_log(LOG_INFO, "Sucessfully opened DTMF FIFO '%s'.", d->fname);
+    
+    return d;
+
+fail:
+    if (d)
+        dtmf_fifo_free(d);
+
+    return NULL;
+}
+
+void dtmf_fifo_free(struct dtmf_fifo *d) {
+    assert(d);
+
+    if (d->fd >= 0)
+        close(d->fd);
+
+    if (d->fname) {
+        unlink(d->fname);
+        free(d->fname);
+    }
+    
+    if (d->dir) {
+        rmdir(d->dir);
+        free(d->dir);
+    }
+    
+    free(d);
+}
+
+void dtmf_fifo_pass(struct dtmf_fifo *d, char c) {
+    assert(d && d->fd >= 0);
+    
+    daemon_log(LOG_INFO, "Recieved DTMF character '%c'", c);
+
+    if (write(d->fd, &c, 1) != 1)
+        daemon_log(LOG_ERR, "Failed to write to DTMF FIFO: %s", strerror(errno));
+}