1 files changed, 167 insertions, 0 deletions
diff --git a/src/port_list_struct.c b/src/port_list_struct.c
new file mode 100644
index 0000000..f464044
--- /dev/null
+++ b/src/port_list_struct.c
@@ -0,0 +1,167 @@
+/*
+ * active port forwarder - software for secure forwarding
+ * Copyright (C) 2003-2007 jeremian <jeremian [at] poczta.fm>
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <assert.h>
+
+#include "port_list_struct.h"
+
+/*
+ * Function name: PortList_new
+ * Description: Creates and initialies new PortList structure.
+ * Returns: Newly created PortList structure.
+ */
+
+PortList*
+PortList_new()
+{
+  PortList* tmp = calloc(1, sizeof(PortList));
+  assert(tmp != NULL);
+  if (tmp == NULL) {
+    return NULL;
+  }
+  return tmp;
+}
+
+/*
+ * Function name: PortList_free
+ * Description: Frees the memory allocated for PortList structure.
+ * Arguments: pl - pointer to pointer to PortList structure
+ */
+
+void
+PortList_free(PortList** pl)
+{
+  assert(pl != NULL);
+  if (pl == NULL) {
+    return;
+  }
+  assert((*pl) != NULL);
+  if ((*pl) == NULL) {
+    return;
+  }
+  PortList_clear((*pl));
+  free((*pl));
+  (*pl) = NULL;
+}
+
+/*
+ * Function name: PortList_insert_back
+ * Description: Inserts new node at the end of the list.
+ * Arguments: pl - pointer to PortList structure
+ *            pln - pointer to PortListNode structure
+ */
+
+void
+PortList_insert_back(PortList* pl, PortListNode* pln)
+{
+  assert(pl != NULL);
+  if (pl == NULL) {
+    return;
+  }
+  assert(pln != NULL);
+  if (pln == NULL) {
+    return;
+  }
+  if (pl->tail) {
+    pl->tail->nextNode = pln;
+  }
+  else {
+    pl->head = pln;
+  }
+  pl->tail = pln;
+  pln->nextNode = NULL;
+  pl->size += 1;
+}
+
+/*
+ * Function name: PortList_get_nth
+ * Description: Get the nth node from the beginning of the list.
+ * Arguments: pl - pointer to PortList structure
+ *            n - the number of the node
+ * Returns: Nth node from the beginning of the list.
+ */
+
+PortListNode*
+PortList_get_nth(PortList* pl, int n)
+{
+  PortListNode* tmp;
+  assert(pl != NULL);
+  if (pl == NULL) {
+    return NULL;
+  }
+  assert(n >= 0);
+  assert(n < PortList_get_size(pl));
+  tmp = pl->head;
+  while (tmp) {
+    if (n <= 0) {
+      return tmp;
+    }
+    n -= 1;
+    tmp = PortListNode_get_nextNode(tmp);
+  }
+  return NULL;
+}
+
+/*
+ * Function name: PortList_get_size
+ * Description: Returns the size of the list.
+ * Arguments: pl - pointer to PortList structure
+ * Returns: The size of the list.
+ */
+
+int
+PortList_get_size(PortList* pl)
+{
+  assert(pl != NULL);
+  if (pl == NULL) {
+    return -1;
+  }
+  return pl->size;
+}
+
+/*
+ * Function name: PortList_clear
+ * Description: Deletes all nodes from the list.
+ * Arguments: pl - pointer to PortList structure
+ */
+
+void
+PortList_clear(PortList* pl)
+{
+  PortListNode* tmp;
+  assert(pl != NULL);
+  if (pl == NULL) {
+    return;
+  }
+  while (pl->head) {
+    tmp = pl->head;
+    if (tmp == pl->tail) {
+      pl->head = pl->tail = NULL;
+    }
+    else {
+      pl->head = PortListNode_get_nextNode(pl->head);
+    }
+    PortListNode_free(&tmp);
+  }
+  pl->size = 0;
+}