1 files changed, 289 insertions, 0 deletions
diff --git a/src/buf_list_node_struct.c b/src/buf_list_node_struct.c
new file mode 100644
index 0000000..5416ce3
--- /dev/null
+++ b/src/buf_list_node_struct.c
@@ -0,0 +1,289 @@
+/*
+ * 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_node_struct.h"
+
+/*
+ * Function name: BufListNode_new
+ * Description: Creates and initializes new BufListNode structure.
+ * Returns: Newly created BufListNode structure.
+ */
+
+BufListNode*
+BufListNode_new()
+{
+  BufListNode* tmp = calloc(1, sizeof(BufListNode));
+  assert(tmp != NULL);
+  if (tmp == NULL) {
+    return NULL;
+  }
+  return tmp;
+}
+
+/*
+ * Function name: BufListNode_new_message
+ * Description: Create and initialize new BufListNode structure from given message
+ *              with actual buffer pointer and message length.
+ * Arguments: actPtr - actual buffer pointer
+ *            msgLen - length of the message
+ *            message - message to be stored
+ * Returns: Newly created and initialized BufListNode structure.
+ */
+
+BufListNode*
+BufListNode_new_message(int actPtr, int msgLen, unsigned char* message)
+{
+  BufListNode* tmp = calloc(1, sizeof(BufListNode));
+  assert(tmp != NULL);
+  if (tmp == NULL) {
+    return NULL;
+  }
+  BufListNode_set_message(tmp, message, msgLen);
+  BufListNode_set_actPtr(tmp, actPtr);
+  return tmp;
+}
+
+/*
+ * Function name: BufListNode_free
+ * Description: Frees the memory allocated for BufListNode structure.
+ * Arguments: bln - pointer to pointer to BufListNode structure
+ */
+
+void
+BufListNode_free(BufListNode** bln)
+{
+  assert(bln != NULL);
+  if (bln == NULL) {
+    return;
+  }
+  assert((*bln) != NULL);
+  if ((*bln) == NULL) {
+    return;
+  }
+  if ((*bln)->message) {
+    free((*bln)->message);
+    (*bln)->message = NULL;
+  }
+  free((*bln));
+  (*bln) = NULL;
+}
+
+/*
+ * Function name: BufListNode_set_actPtr
+ * Description: Sets actual buffer pointer.
+ * Arguments: bln - pointer to BufListNode structure
+ *            actPtr - actual buffer pointer
+ */
+
+void
+BufListNode_set_actPtr(BufListNode* bln, int actPtr)
+{
+  assert(bln != NULL);
+  if (bln == NULL) {
+    return;
+  }
+  bln->actPtr = actPtr;
+}
+
+/*
+ * Function name: BufListNode_set_msgLen
+ * Description: Sets length of the message.
+ * Arguments: bln - pointer to BufListNode structure
+ *            msgLen - length of the message
+ */
+
+void
+BufListNode_set_msgLen(BufListNode* bln, int msgLen)
+{
+  assert(bln != NULL);
+  if (bln == NULL) {
+    return;
+  }
+  bln->msgLen = msgLen;
+}
+
+/*
+ * Function name: BufListNode_set_message
+ * Description: Sets message to be stored.
+ * Arguments: bln - pointer to BufListNode structure
+ *            message - message to be stored
+ *            msgLen - length of the message
+ */
+
+void
+BufListNode_set_message(BufListNode* bln, unsigned char* message, int msgLen)
+{
+  assert(bln != NULL);
+  if (bln == NULL) {
+    return;
+  }
+  if (bln->message) {
+    free(bln->message);
+    bln->message = NULL;
+  }
+  BufListNode_set_actPtr(bln, 0);
+  BufListNode_set_msgLen(bln, 0);
+  assert(message != NULL);
+  if (message == NULL) {
+    return;
+  }
+  bln->message = calloc(1, msgLen);
+  assert(bln->message != NULL);
+  if (bln->message == NULL) {
+    return;
+  }
+  memcpy(bln->message, message, msgLen);
+  BufListNode_set_msgLen(bln, msgLen);
+}
+
+/*
+ * Function name: BufListNode_set_nextNode
+ * Description: Sets next node pointer.
+ * Arguments: bln - pointer to BufListNode structure
+ *            nextNode - next node pointer
+ */
+
+void
+BufListNode_set_nextNode(BufListNode* bln, BufListNode* nextNode)
+{
+  assert(bln != NULL);
+  if (bln == NULL) {
+    return;
+  }
+  bln->nextNode = nextNode;
+}
+
+/*
+ * Function name: BufListNode_get_actPtr
+ * Description: Gets actual buffer pointer.
+ * Aguments: bln - pointer to BufListNode structure
+ * Returns: Actual buffer pointer.
+ */
+
+int
+BufListNode_get_actPtr(BufListNode* bln)
+{
+  assert(bln != NULL);
+  if (bln == NULL) {
+    return -1;
+  }
+  return bln->actPtr;
+}
+
+/*
+ * Function name: BufListNode_get_msgLen
+ * Description: Gets length of the message.
+ * Arguments: bln - pointer to BufListNode structure
+ * Returns: Length of the message.
+ */
+
+int
+BufListNode_get_msgLen(BufListNode* bln)
+{
+  assert(bln != NULL);
+  if (bln == NULL) {
+    return -1;
+  }
+  return bln->msgLen;
+}
+
+/*
+ * Function name: BufListNode_get_message
+ * Description: Gets stored message.
+ * Arguments: bln - pointer to BufListNode structure
+ * Returns: Stored message.
+ */
+
+unsigned char*
+BufListNode_get_message(BufListNode* bln)
+{
+  assert(bln != NULL);
+  if (bln == NULL) {
+    return NULL;
+  }
+  return bln->message;
+}
+
+/*
+ * Function name: BufListNode_get_nextNode
+ * Description: Gets next node pointer.
+ * Arguments: bln - pointer to BufListNode structure
+ * Returns: Next BufListNode structure pointer or NULL, if there is no next one.
+ */
+
+BufListNode*
+BufListNode_get_nextNode(BufListNode* bln)
+{
+  assert(bln != NULL);
+  if (bln == NULL) {
+    return NULL;
+  }
+  return bln->nextNode;
+}
+
+/*
+ * Function name: BufListNode_readMessage
+ * Description: Reads the message from actual buffer pointer.
+ * Arguments: bln - pointer to BufListNode structure
+ * Returns: Tail of the message from actual buffer pointer.
+ */
+
+unsigned char*
+BufListNode_readMessage(BufListNode* bln)
+{
+  assert(bln != NULL);
+  if (bln == NULL) {
+    return NULL;
+  }
+  return (&bln->message[BufListNode_get_actPtr(bln)]);
+}
+
+/*
+ * Function name: BufListNode_readMessageLength
+ * Description: Gets the amount of unread bytes in the message.
+ * Arguments: bln - pointer to BufListNode structure
+ * Returns: The amount of unread bytes in the message.
+ */
+
+int
+BufListNode_readMessageLength(BufListNode* bln)
+{
+  int tmp = 0;
+  assert(bln != NULL);
+  if (bln == NULL) {
+    return -1;
+  }
+  assert(BufListNode_get_message(bln) != NULL);
+  if (BufListNode_get_message(bln) == NULL) {
+    return -1;
+  }
+  tmp = BufListNode_get_msgLen(bln) - BufListNode_get_actPtr(bln);
+  assert(tmp >= 0);
+  if (tmp < 0) {
+    return 0;
+  }
+  return tmp;
+}