+#ifndef TINC_CONNECTION_H
+#define TINC_CONNECTION_H
+
/*
connection.h -- header for connection.c
- Copyright (C) 2000-2010 Guus Sliepen <guus@tinc-vpn.org>,
+ Copyright (C) 2000-2013 Guus Sliepen <guus@tinc-vpn.org>,
2000-2005 Ivo Timmermans
This program is free software; you can redistribute it and/or modify
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#ifndef __TINC_CONNECTION_H__
-#define __TINC_CONNECTION_H__
-
-#include <openssl/rsa.h>
-#include <openssl/evp.h>
-
-#include "avl_tree.h"
-
-#define OPTION_INDIRECT 0x0001
-#define OPTION_TCPONLY 0x0002
-#define OPTION_PMTU_DISCOVERY 0x0004
-#define OPTION_CLAMP_MSS 0x0008
-
-typedef struct connection_status_t {
- unsigned int pinged:1; /* sent ping */
- unsigned int active:1; /* 1 if active.. */
- unsigned int connecting:1; /* 1 if we are waiting for a non-blocking connect() to finish */
- unsigned int termreq:1; /* the termination of this connection was requested */
- unsigned int remove:1; /* Set to 1 if you want this connection removed */
- unsigned int timeout:1; /* 1 if gotten timeout */
- unsigned int encryptout:1; /* 1 if we can encrypt outgoing traffic */
- unsigned int decryptin:1; /* 1 if we have to decrypt incoming traffic */
- unsigned int mst:1; /* 1 if this connection is part of a minimum spanning tree */
- unsigned int unused:23;
+#include "buffer.h"
+#include "cipher.h"
+#include "digest.h"
+#include "rsa.h"
+#include "list.h"
+#include "sptps.h"
+#include "logger.h"
+
+#define OPTION_INDIRECT 0x0001
+#define OPTION_TCPONLY 0x0002
+#define OPTION_PMTU_DISCOVERY 0x0004
+#define OPTION_CLAMP_MSS 0x0008
+#define OPTION_VERSION(x) ((x) >> 24) /* Top 8 bits are for protocol minor version */
+
+typedef union connection_status_t {
+ struct {
+ bool pinged: 1; /* sent ping */
+ bool unused_active: 1;
+ bool connecting: 1; /* 1 if we are waiting for a non-blocking connect() to finish */
+ bool unused_termreq: 1; /* the termination of this connection was requested */
+ bool remove_unused: 1; /* Set to 1 if you want this connection removed */
+ bool timeout_unused: 1; /* 1 if gotten timeout */
+ bool encryptout: 1; /* 1 if we can encrypt outgoing traffic */
+ bool decryptin: 1; /* 1 if we have to decrypt incoming traffic */
+ bool mst: 1; /* 1 if this connection is part of a minimum spanning tree */
+ bool control: 1; /* 1 if this is a control connection */
+ bool pcap: 1; /* 1 if this is a control connection requesting packet capture */
+ bool log: 1; /* 1 if this is a control connection requesting log dump */
+ bool log_color: 1; /* 1 if this connection supports ANSI escape codes */
+ bool invitation: 1; /* 1 if this is an invitation */
+ bool invitation_used: 1; /* 1 if the invitation has been consumed */
+ bool tarpit: 1; /* 1 if the connection should be added to the tarpit */
+ };
+ uint32_t value;
} connection_status_t;
+#include "ecdsa.h"
#include "edge.h"
#include "net.h"
#include "node.h"
+#ifndef DISABLE_LEGACY
+typedef struct legacy_crypto_t {
+ cipher_t cipher;
+ digest_t digest;
+ uint64_t budget;
+} legacy_crypto_t;
+
+bool init_crypto_by_nid(legacy_crypto_t *c, nid_t cipher, nid_t digest) ATTR_WARN_UNUSED;
+bool init_crypto_by_name(legacy_crypto_t *c, const char *cipher, const char *digest) ATTR_WARN_UNUSED;
+bool decrease_budget(legacy_crypto_t *c, size_t bytes) ATTR_WARN_UNUSED;
+
+typedef struct legacy_ctx_t {
+ rsa_t *rsa; /* his public RSA key or my private RSA key */
+ legacy_crypto_t in; /* cipher/digest he will use to send data to us */
+ legacy_crypto_t out; /* cipher/digest we will use to send data to him */
+} legacy_ctx_t;
+
+legacy_ctx_t *new_legacy_ctx(rsa_t *rsa);
+void free_legacy_ctx(legacy_ctx_t *ctx);
+#endif
+
typedef struct connection_t {
- char *name; /* name he claims to have */
-
- union sockaddr_t address; /* his real (internet) ip */
- char *hostname; /* the hostname of its real ip */
- int protocol_version; /* used protocol */
-
- int socket; /* socket used for this connection */
- uint32_t options; /* options for this connection */
- connection_status_t status; /* status info */
- int estimated_weight; /* estimation for the weight of the edge for this connection */
- struct timeval start; /* time this connection was started, used for above estimation */
- struct outgoing_t *outgoing; /* used to keep track of outgoing connections */
-
- struct node_t *node; /* node associated with the other end */
- struct edge_t *edge; /* edge associated with this connection */
-
- RSA *rsa_key; /* his public/private key */
- const EVP_CIPHER *incipher; /* Cipher he will use to send data to us */
- const EVP_CIPHER *outcipher; /* Cipher we will use to send data to him */
- EVP_CIPHER_CTX *inctx; /* Context of encrypted meta data that will come from him to us */
- EVP_CIPHER_CTX *outctx; /* Context of encrypted meta data that will be sent from us to him */
- char *inkey; /* His symmetric meta key + iv */
- char *outkey; /* Our symmetric meta key + iv */
- int inkeylength; /* Length of his key + iv */
- int outkeylength; /* Length of our key + iv */
- const EVP_MD *indigest;
- const EVP_MD *outdigest;
- int inmaclength;
+ char *name; /* name he claims to have */
+ char *hostname; /* the hostname of its real ip */
+
+ union sockaddr_t address; /* his real (internet) ip */
+ int protocol_major; /* used protocol */
+ int protocol_minor; /* used protocol */
+
+ int socket; /* socket used for this connection */
+ uint32_t options; /* options for this connection */
+ connection_status_t status; /* status info */
+ int estimated_weight; /* estimation for the weight of the edge for this connection */
+ struct timeval start; /* time this connection was started, used for above estimation */
+ struct outgoing_t *outgoing; /* used to keep track of outgoing connections */
+
+ struct node_t *node; /* node associated with the other end */
+ struct edge_t *edge; /* edge associated with this connection */
+
+#ifndef DISABLE_LEGACY
+ legacy_ctx_t *legacy;
+#endif
+
+ ecdsa_t *ecdsa; /* his public ECDSA key */
+ sptps_t sptps;
+
int outmaclength;
- int incompression;
- int outcompression;
- char *mychallenge; /* challenge we received from him */
- char *hischallenge; /* challenge we sent to him */
-
- char buffer[MAXBUFSIZE]; /* metadata input buffer */
- int buflen; /* bytes read into buffer */
- int reqlen; /* length of incoming request */
- int tcplen; /* length of incoming TCPpacket */
- int allow_request; /* defined if there's only one request possible */
-
- char *outbuf; /* metadata output buffer */
- int outbufstart; /* index of first meaningful byte in output buffer */
- int outbuflen; /* number of meaningful bytes in output buffer */
- int outbufsize; /* number of bytes allocated to output buffer */
-
- time_t last_ping_time; /* last time we saw some activity from the other end or pinged them */
- time_t last_flushed_time; /* last time buffer was empty. Only meaningful if outbuflen > 0 */
-
- avl_tree_t *config_tree; /* Pointer to configuration tree belonging to him */
+ debug_t log_level; /* used for REQ_LOG */
+
+ uint8_t *hischallenge; /* The challenge we sent to him */
+ uint8_t *mychallenge; /* The challenge we received */
+
+ struct buffer_t inbuf;
+ struct buffer_t outbuf;
+ io_t io; /* input/output event on this metadata connection */
+ uint32_t tcplen; /* length of incoming TCPpacket */
+ uint32_t sptpslen; /* length of incoming SPTPS packet */
+ int allow_request; /* defined if there's only one request possible */
+
+ time_t last_ping_time; /* last time we saw some activity from the other end or pinged them */
+
+ splay_tree_t *config_tree; /* Pointer to configuration tree belonging to him */
} connection_t;
-extern avl_tree_t *connection_tree;
-extern connection_t *broadcast;
+extern list_t connection_list;
+extern connection_t *everyone;
extern void init_connections(void);
extern void exit_connections(void);
-extern connection_t *new_connection(void) __attribute__ ((__malloc__));
-extern void free_connection(connection_t *);
-extern void connection_add(connection_t *);
-extern void connection_del(connection_t *);
-extern void dump_connections(void);
+extern void free_connection(connection_t *c);
+extern connection_t *new_connection(void) ATTR_MALLOC ATTR_DEALLOCATOR(free_connection);
+extern void connection_add(connection_t *c);
+extern void connection_del(connection_t *c);
+extern bool dump_connections(struct connection_t *c);
-#endif /* __TINC_CONNECTION_H__ */
+#endif
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