1 files changed, 152 insertions, 0 deletions
diff --git a/src/buf_list_struct.c b/src/buf_list_struct.c
new file mode 100644
index 0000000..cbdbe09
--- /dev/null
+++ b/src/buf_list_struct.c
@@ -0,0 +1,152 @@
+/*
+ * 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 <string.h>
+#include <assert.h>
+
+#include "buf_list_struct.h"
+
+/*
+ * Function name: BufList_new
+ * Description: Creates and initializes new BufList structure.
+ * Returns: Newly created BufList structure.
+ */
+
+BufList*
+BufList_new()
+{
+  BufList* tmp = calloc(1, sizeof(BufList));
+  assert(tmp != NULL);
+  if (tmp == NULL) {
+    return NULL;
+  }
+  return tmp;
+}
+
+/*
+ * Function name: BufList_free
+ * Description: Frees the memory allocated for BufList structure.
+ * Arguments: bl - pointer to pointer to BufList structure.
+ */
+
+void
+BufList_free(BufList** bl)
+{
+  assert(bl != NULL);
+  if (bl == NULL) {
+    return;
+  }
+  assert((*bl) != NULL);
+  if ((*bl) == NULL) {
+    return;
+  }
+  BufList_clear((*bl));
+  free((*bl));
+  (*bl) = NULL;
+}
+
+/*
+ * Function name: BufList_insert_back
+ * Description: Inserts new node at the end of the list.
+ * Arguments: bl - pointer to BufList structure
+ *            bln - pointer to BufListNode structure
+ */
+
+void
+BufList_insert_back(BufList* bl, BufListNode* bln)
+{
+  assert(bl != NULL);
+  if (bl == NULL) {
+    return;
+  }
+  assert(bln != NULL);
+  if (bln == NULL) {
+    return;
+  }
+  if (bl->tail) {
+    bl->tail->nextNode = bln;
+  }
+  else {
+    bl->head = bln;
+  }
+  bl->tail = bln;
+  bln->nextNode = NULL;
+}
+
+/*
+ * Function name: BufList_get_first
+ * Description: Get first node from the beginning of the list.
+ * Arguments: bl - pointer to BufList structure
+ * Returns: First node from the beginning of the list.
+ */
+
+BufListNode*
+BufList_get_first(BufList* bl)
+{
+  assert(bl != NULL);
+  if (bl == NULL) {
+    return NULL;
+  }
+  return bl->head;
+}
+
+/*
+ * Function name: BufList_delete_first
+ * Description: Deletes first node from the beginning of the list.
+ * Arguments: bl - pointer to BufList structure
+ */
+
+void
+BufList_delete_first(BufList* bl)
+{
+  BufListNode* tmp = BufList_get_first(bl);
+  assert(tmp != NULL);
+  if (tmp == NULL) {
+    return;
+  }
+  if (tmp == bl->tail) { /* this is the last node in the list */
+    bl->head = bl->tail = NULL;
+  }
+  else { /* there are other nodes*/
+    bl->head = BufListNode_get_nextNode(tmp);
+  }
+  BufListNode_free(&tmp);
+}
+
+/*
+ * Function name: BufList_clear
+ * Description: Deletes all nodes from the list.
+ * Arguments: bl - pointer to BufList structure
+ */
+
+void
+BufList_clear(BufList* bl)
+{
+  assert(bl != NULL);
+  if (bl == NULL) {
+    return;
+  }
+  while (BufList_get_first(bl)) {
+    BufList_delete_first(bl);
+  }
+}