Moving files, first attempt at gcrypt compatibility, more interface

[tinc] / lib / node.h

diff --git a/lib/node.h b/lib/node.h
new file mode 100644 (file)
index 0000000..b43c2b4
--- /dev/null
+++ b/lib/node.h
@@ -0,0 +1,104 @@
+/*
+    node.h -- header for node.c
+    Copyright (C) 2001-2002 Guus Sliepen <guus@sliepen.warande.net>,
+                  2001-2002 Ivo Timmermans <itimmermans@bigfoot.com>
+
+    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., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+    $Id: node.h,v 1.1 2002/04/28 12:46:26 zarq Exp $
+*/
+
+#ifndef __TINC_NODE_H__
+#define __TINC_NODE_H__
+
+#include <gcrypt.h>
+
+#include <avl_tree.h>
+
+#include "subnet.h"
+#include "connection.h"
+
+typedef struct node_status_t {
+  int active:1;                    /* 1 if active.. */
+  int validkey:1;                  /* 1 if we currently have a valid key for him */
+  int waitingforkey:1;             /* 1 if we already sent out a request */
+  int visited:1;                   /* 1 if this node has been visited by one of the graph algorithms */
+  int reachable:1;                 /* 1 if this node is reachable in the graph */
+  int indirect:1;                  /* 1 if this node is not directly reachable by us */
+  int unused:26;
+} node_status_t;
+
+typedef struct node_t {
+  char *name;                      /* name of this node */
+  long int options;                /* options turned on for this node */
+
+  sockaddr_t address;              /* his real (internet) ip to send UDP packets to */
+  char *hostname;                  /* the hostname of its real ip */
+
+  struct node_status_t status;
+
+#ifdef USE_OPENSSL
+  const EVP_CIPHER *cipher;        /* Cipher type for UDP packets */
+#endif
+#ifdef USE_GCRYPT
+  GCRY_CIPHER_HD cipher;           /* Cipher type for UDP packets */
+#endif
+  
+  char *key;                       /* Cipher key and iv */
+  int keylength;                   /* Cipher key and iv length*/
+
+#ifdef USE_OPENSSL
+  const EVP_MD *digest;            /* Digest type for MAC */
+#endif
+#ifdef USE_GCRYPT
+  GCRY_MD_HD digest;               /* Digest type for MAC */
+#endif
+  
+  int maclength;                   /* Length of MAC */
+
+  int compression;                 /* Compressionlevel, 0 = no compression */
+
+  list_t *queue;                   /* Queue for packets awaiting to be encrypted */
+
+  struct node_t *nexthop;          /* nearest node from us to him */
+  struct node_t *via;              /* next hop for UDP packets */
+  
+  avl_tree_t *subnet_tree;         /* Pointer to a tree of subnets belonging to this node */
+
+  avl_tree_t *edge_tree;           /* Edges with this node as one of the endpoints */
+
+  struct connection_t *connection; /* Connection associated with this node (if a direct connection exists) */
+
+  unsigned int sent_seqno;         /* Sequence number last sent to this node */
+  unsigned int received_seqno;     /* Sequence number last received from this node */
+
+  void *data;                      /* Interface details */
+} node_t;
+
+extern struct node_t *myself;
+extern avl_tree_t *node_tree;
+extern avl_tree_t *node_udp_tree;
+
+extern void init_nodes(void);
+extern void exit_nodes(void);
+extern node_t *new_node(void);
+extern void free_node(node_t *);
+extern void node_add(node_t *);
+extern void node_del(node_t *);
+extern node_t *lookup_node(char *);
+extern node_t *lookup_node_udp(sockaddr_t *);
+extern void dump_nodes(void);
+
+#endif /* __TINC_NODE_H__ */