Add new function to get the underlying file descriptor of an idevice connection

2 files changed, 26 insertions, 0 deletions

diff --git a/include/libimobiledevice/libimobiledevice.h b/include/libimobiledevice/libimobiledevice.h
index 016cadb..b125adf 100644
--- a/include/libimobiledevice/libimobiledevice.h
+++ b/include/libimobiledevice/libimobiledevice.h
@@ -239,6 +239,16 @@ idevice_error_t idevice_connection_enable_ssl(idevice_connection_t connection);
  */
 idevice_error_t idevice_connection_disable_ssl(idevice_connection_t connection);
 
+/**
+ * Get the underlying file descriptor for a connection
+ *
+ * @param connection The connection to get fd of
+ * @param fd Pointer to an int where the fd is stored
+ *
+ * @return IDEVICE_E_SUCCESS if ok, otherwise an error code.
+ */
+idevice_error_t idevice_connection_get_fd(idevice_connection_t connection, int *fd);
+
 /* misc */
 
 /**
diff --git a/src/idevice.c b/src/idevice.c
index b776e84..5912aeb 100644
--- a/src/idevice.c
+++ b/src/idevice.c
@@ -463,6 +463,22 @@ LIBIMOBILEDEVICE_API idevice_error_t idevice_connection_receive(idevice_connecti
         return internal_connection_receive(connection, data, len, recv_bytes);
 }
 
+LIBIMOBILEDEVICE_API idevice_error_t idevice_connection_get_fd(idevice_connection_t connection, int *fd)
+{
+        if (!connection || !fd) {
+                return IDEVICE_E_INVALID_ARG;
+        }
+
+        idevice_error_t result = IDEVICE_E_UNKNOWN_ERROR;
+        if (connection->type == CONNECTION_USBMUXD) {
+                *fd = (int)(long)connection->data;
+                result = IDEVICE_E_SUCCESS;
+        } else {
+                debug_info("Unknown connection type %d", connection->type);
+        }
+        return result;
+}
+
 LIBIMOBILEDEVICE_API idevice_error_t idevice_get_handle(idevice_t device, uint32_t *handle)
 {
         if (!device)