Merge tag 'upstream/2.3_rc1'

Upstream version 2.3_rc1

1 files changed, 0 insertions, 849 deletions

diff --git a/ssl.h b/ssl.h
deleted file mode 100644
index 8464492..0000000
--- a/ssl.h
+++ /dev/null
@@ -1,849 +0,0 @@
-/*
- *  OpenVPN -- An application to securely tunnel IP networks
- *             over a single TCP/UDP port, with support for SSL/TLS-based
- *             session authentication and key exchange,
- *             packet encryption, packet authentication, and
- *             packet compression.
- *
- *  Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License version 2
- *  as published by the Free Software Foundation.
- *
- *  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 (see the file COPYING included with this
- *  distribution); if not, write to the Free Software Foundation, Inc.,
- *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-#ifndef OPENVPN_SSL_H
-#define OPENVPN_SSL_H
-
-#if defined(USE_CRYPTO) && defined(USE_SSL)
-
-#include <openssl/ssl.h>
-#include <openssl/bio.h>
-#include <openssl/rand.h>
-#include <openssl/err.h>
-#include <openssl/pkcs12.h>
-#include <openssl/x509v3.h>
-
-#include "basic.h"
-#include "common.h"
-#include "crypto.h"
-#include "packet_id.h"
-#include "session_id.h"
-#include "reliable.h"
-#include "socket.h"
-#include "mtu.h"
-#include "options.h"
-#include "plugin.h"
-
-/*
- * OpenVPN Protocol, taken from ssl.h in OpenVPN source code.
- *
- * TCP/UDP Packet:  This represents the top-level encapsulation.
- *
- * TCP/UDP packet format:
- *
- *   Packet length (16 bits, unsigned) -- TCP only, always sent as
- *       plaintext.  Since TCP is a stream protocol, the packet
- *       length words define the packetization of the stream.
- *
- *   Packet opcode/key_id (8 bits) -- TLS only, not used in
- *       pre-shared secret mode.
- *            packet message type, a P_* constant (high 5 bits)
- *            key_id (low 3 bits, see key_id in struct tls_session
- *              below for comment).  The key_id refers to an
- *              already negotiated TLS session.  OpenVPN seamlessly
- *              renegotiates the TLS session by using a new key_id
- *              for the new session.  Overlap (controlled by
- *              user definable parameters) between old and new TLS
- *              sessions is allowed, providing a seamless transition
- *              during tunnel operation.
- *
- *   Payload (n bytes), which may be a P_CONTROL, P_ACK, or P_DATA
- *       message.
- *
- * Message types:
- *
- *  P_CONTROL_HARD_RESET_CLIENT_V1 -- Key method 1, initial key from
- *    client, forget previous state.
- *
- *  P_CONTROL_HARD_RESET_SERVER_V1 -- Key method 2, initial key
- *    from server, forget previous state.
- *
- *  P_CONTROL_SOFT_RESET_V1 -- New key, with a graceful transition
- *    from old to new key in the sense that a transition window
- *    exists where both the old or new key_id can be used.  OpenVPN
- *    uses two different forms of key_id.  The first form is 64 bits
- *    and is used for all P_CONTROL messages.  P_DATA messages on the
- *    other hand use a shortened key_id of 3 bits for efficiency
- *    reasons since the vast majority of OpenVPN packets in an
- *    active tunnel will be P_DATA messages.  The 64 bit form
- *    is referred to as a session_id, while the 3 bit form is
- *    referred to as a key_id.
- *
- *  P_CONTROL_V1 -- Control channel packet (usually TLS ciphertext).
- *
- *  P_ACK_V1 -- Acknowledgement for P_CONTROL packets received.
- *
- *  P_DATA_V1 -- Data channel packet containing actual tunnel data
- *    ciphertext.
- *
- *  P_CONTROL_HARD_RESET_CLIENT_V2 -- Key method 2, initial key from
- *   client, forget previous state.
- *
- *  P_CONTROL_HARD_RESET_SERVER_V2 -- Key method 2, initial key from
- *   server, forget previous state.
- *
- * P_CONTROL* and P_ACK Payload:  The P_CONTROL message type
- * indicates a TLS ciphertext packet which has been encapsulated
- * inside of a reliability layer.  The reliability layer is
- * implemented as a straightforward ACK and retransmit model.
- *
- * P_CONTROL message format:
- *
- *   local session_id (random 64 bit value to identify TLS session).
- *   HMAC signature of entire encapsulation header for integrity
- *       check if --tls-auth is specified (usually 16 or 20 bytes).
- *   packet-id for replay protection (4 or 8 bytes, includes
- *       sequence number and optional time_t timestamp).
- *   P_ACK packet_id array length (1 byte).
- *   P_ACK packet-id array (if length > 0).
- *   P_ACK remote session_id (if length > 0).
- *   message packet-id (4 bytes).
- *   TLS payload ciphertext (n bytes) (only for P_CONTROL).
- *
- * Once the TLS session has been initialized and authenticated,
- * the TLS channel is used to exchange random key material for
- * bidirectional cipher and HMAC keys which will be
- * used to secure actual tunnel packets.  OpenVPN currently
- * implements two key methods.  Key method 1 directly
- * derives keys using random bits obtained from the RAND_bytes
- * OpenSSL function.  Key method 2 mixes random key material
- * from both sides of the connection using the TLS PRF mixing
- * function.  Key method 2 is the preferred method and is the default
- * for OpenVPN 2.0.
- * 
- * TLS plaintext content:
- *
- * TLS plaintext packet (if key_method == 1):
- *
- *   Cipher key length in bytes (1 byte).
- *   Cipher key (n bytes).
- *   HMAC key length in bytes (1 byte).
- *   HMAC key (n bytes).
- *   Options string (n bytes, null terminated, client/server options
- *       string should match).
- *
- * TLS plaintext packet (if key_method == 2):
- *
- *   Literal 0 (4 bytes).
- *   key_method type (1 byte).
- *   key_source structure (pre_master only defined for client ->
- *       server).
- *   options_string_length, including null (2 bytes).
- *   Options string (n bytes, null terminated, client/server options
- *       string must match).
- *   [The username/password data below is optional, record can end
- *       at this point.]
- *   username_string_length, including null (2 bytes).
- *   Username string (n bytes, null terminated).
- *   password_string_length, including null (2 bytes).
- *   Password string (n bytes, null terminated).
- *
- * The P_DATA payload represents encrypted, encapsulated tunnel
- * packets which tend to be either IP packets or Ethernet frames.
- * This is essentially the "payload" of the VPN.
- *
- * P_DATA message content:
- *   HMAC of ciphertext IV + ciphertext (if not disabled by
- *       --auth none).
- *   Ciphertext IV (size is cipher-dependent, if not disabled by
- *       --no-iv).
- *   Tunnel packet ciphertext.
- *
- * P_DATA plaintext
- *   packet_id (4 or 8 bytes, if not disabled by --no-replay).
- *       In SSL/TLS mode, 4 bytes are used because the implementation
- *       can force a TLS renegotation before 2^32 packets are sent.
- *       In pre-shared key mode, 8 bytes are used (sequence number
- *       and time_t value) to allow long-term key usage without
- *       packet_id collisions.
- *   User plaintext (n bytes).
- *
- * Notes:
- *   (1) ACK messages can be encoded in either the dedicated
- *       P_ACK record or they can be prepended to a P_CONTROL message.
- *   (2) P_DATA and P_CONTROL/P_ACK use independent packet-id
- *       sequences because P_DATA is an unreliable channel while
- *       P_CONTROL/P_ACK is a reliable channel.  Each use their
- *       own independent HMAC keys.
- *   (3) Note that when --tls-auth is used, all message types are
- *       protected with an HMAC signature, even the initial packets
- *       of the TLS handshake.  This makes it easy for OpenVPN to
- *       throw away bogus packets quickly, without wasting resources
- *       on attempting a TLS handshake which will ultimately fail.
- */
-
-/* Used in the TLS PRF function */
-#define KEY_EXPANSION_ID "OpenVPN"
-
-/* passwords */
-#define UP_TYPE_AUTH        "Auth"
-#define UP_TYPE_PRIVATE_KEY "Private Key"
-
-/* packet opcode (high 5 bits) and key-id (low 3 bits) are combined in one byte */
-#define P_KEY_ID_MASK                  0x07
-#define P_OPCODE_SHIFT                 3
-
-/* packet opcodes -- the V1 is intended to allow protocol changes in the future */
-#define P_CONTROL_HARD_RESET_CLIENT_V1 1     /* initial key from client, forget previous state */
-#define P_CONTROL_HARD_RESET_SERVER_V1 2     /* initial key from server, forget previous state */
-#define P_CONTROL_SOFT_RESET_V1        3     /* new key, graceful transition from old to new key */
-#define P_CONTROL_V1                   4     /* control channel packet (usually TLS ciphertext) */
-#define P_ACK_V1                       5     /* acknowledgement for packets received */
-#define P_DATA_V1                      6     /* data channel packet */
-
-/* indicates key_method >= 2 */
-#define P_CONTROL_HARD_RESET_CLIENT_V2 7     /* initial key from client, forget previous state */
-#define P_CONTROL_HARD_RESET_SERVER_V2 8     /* initial key from server, forget previous state */
-
-/* define the range of legal opcodes */
-#define P_FIRST_OPCODE                 1
-#define P_LAST_OPCODE                  8
-
-/* key negotiation states */
-#define S_ERROR          -1
-#define S_UNDEF           0
-#define S_INITIAL         1	/* tls_init() was called */
-#define S_PRE_START       2	/* waiting for initial reset & acknowledgement */
-#define S_START           3	/* ready to exchange keys */
-#define S_SENT_KEY        4	/* client does S_SENT_KEY -> S_GOT_KEY */
-#define S_GOT_KEY         5	/* server does S_GOT_KEY -> S_SENT_KEY */
-#define S_ACTIVE          6	/* ready to exchange data channel packets */
-#define S_NORMAL_OP       7	/* normal operations */
-
-/*
- * Are we ready to receive data channel packets?
- *
- * Also, if true, we can safely assume session has been
- * authenticated by TLS.
- *
- * NOTE: Assumes S_SENT_KEY + 1 == S_GOT_KEY.
- */
-#define DECRYPT_KEY_ENABLED(multi, ks) ((ks)->state >= (S_GOT_KEY - (multi)->opt.server))
-
-/* Should we aggregate TLS acknowledgements, and tack them onto control packets? */
-#define TLS_AGGREGATE_ACK
-
-/*
- * If TLS_AGGREGATE_ACK, set the
- * max number of acknowledgments that
- * can "hitch a ride" on an outgoing
- * non-P_ACK_V1 control packet.
- */
-#define CONTROL_SEND_ACK_MAX 4
-
-/*
- * Define number of buffers for send and receive in the reliability layer.
- */
-#define TLS_RELIABLE_N_SEND_BUFFERS  4 /* also window size for reliablity layer */
-#define TLS_RELIABLE_N_REC_BUFFERS   8
-
-/*
- * Various timeouts
- */
- 
-#define TLS_MULTI_REFRESH 15    /* call tls_multi_process once every n seconds */
-#define TLS_MULTI_HORIZON 2     /* call tls_multi_process frequently for n seconds after
-				   every packet sent/received action */
-
-/* The SSL/TLS worker thread will wait at most this many seconds for the interprocess
-   communication pipe to the main thread to be ready to accept writes. */
-#define TLS_MULTI_THREAD_SEND_TIMEOUT 5
-
-/* Interval that tls_multi_process should call tls_authentication_status */
-#define TLS_MULTI_AUTH_STATUS_INTERVAL 10
-
-/*
- * Buffer sizes (also see mtu.h).
- */
-
-/* Maximum length of the username in cert */
-#define TLS_USERNAME_LEN 64
-
-/* Legal characters in an X509 or common name */
-#define X509_NAME_CHAR_CLASS   (CC_ALNUM|CC_UNDERBAR|CC_DASH|CC_DOT|CC_AT|CC_COLON|CC_SLASH|CC_EQUAL)
-#define COMMON_NAME_CHAR_CLASS (CC_ALNUM|CC_UNDERBAR|CC_DASH|CC_DOT|CC_AT|CC_SLASH)
-
-/* Maximum length of OCC options string passed as part of auth handshake */
-#define TLS_OPTIONS_LEN 512
-
-/* Default field in X509 to be username */
-#define X509_USERNAME_FIELD_DEFAULT "CN"
-
-/*
- * Range of key exchange methods
- */
-#define KEY_METHOD_MIN 1
-#define KEY_METHOD_MAX 2
-
-/* key method taken from lower 4 bits */
-#define KEY_METHOD_MASK 0x0F
-
-/*
- * Measure success rate of TLS handshakes, for debugging only
- */
-/* #define MEASURE_TLS_HANDSHAKE_STATS */
-
-/*
- * Keep track of certificate hashes at various depths
- */
-
-/* Maximum certificate depth we will allow */
-#define MAX_CERT_DEPTH 16
-
-struct cert_hash {
-  unsigned char sha1_hash[SHA_DIGEST_LENGTH];
-};
-
-struct cert_hash_set {
-  struct cert_hash *ch[MAX_CERT_DEPTH];
-};
-
-/*
- * Key material, used as source for PRF-based
- * key expansion.
- */
-
-struct key_source {
-  uint8_t pre_master[48]; /* client generated */
-  uint8_t random1[32];    /* generated by both client and server */
-  uint8_t random2[32];    /* generated by both client and server */
-};
-
-struct key_source2 {
-  struct key_source client;
-  struct key_source server;
-};
-
-/*
- * Represents a single instantiation of a TLS negotiation and
- * data channel key exchange.  4 keys are kept: encrypt hmac,
- * decrypt hmac, encrypt cipher, and decrypt cipher.  The TLS
- * control channel is used to exchange these keys.
- * Each hard or soft reset will build
- * a fresh key_state.  Normally an openvpn session will contain two
- * key_state objects, one for the current TLS connection, and other
- * for the retiring or "lame duck" key.  The lame duck key_state is
- * used to maintain transmission continuity on the data-channel while
- * a key renegotiation is taking place.
- */
-struct key_state
-{
-  int state;
-  int key_id;			/* inherited from struct tls_session below */
-
-  SSL *ssl;			/* SSL object -- new obj created for each new key */
-  BIO *ssl_bio;			/* read/write plaintext from here */
-  BIO *ct_in;			/* write ciphertext to here */
-  BIO *ct_out;			/* read ciphertext from here */
-
-  time_t established;		/* when our state went S_ACTIVE */
-  time_t must_negotiate;	/* key negotiation times out if not finished before this time */
-  time_t must_die;		/* this object is destroyed at this time */
-
-  int initial_opcode;		/* our initial P_ opcode */
-  struct session_id session_id_remote;   /* peer's random session ID */
-  struct link_socket_actual remote_addr; /* peer's IP addr */
-  struct packet_id packet_id;	       /* for data channel, to prevent replay attacks */
-
-  struct key_ctx_bi key;	       /* data channel keys for encrypt/decrypt/hmac */
-
-  struct key_source2 *key_src;         /* source entropy for key expansion */
-
-  struct buffer plaintext_read_buf;
-  struct buffer plaintext_write_buf;
-  struct buffer ack_write_buf;
-
-  struct reliable *send_reliable; /* holds a copy of outgoing packets until ACK received */
-  struct reliable *rec_reliable;  /* order incoming ciphertext packets before we pass to TLS */
-  struct reliable_ack *rec_ack;	  /* buffers all packet IDs we want to ACK back to sender */
-
-  struct buffer_list *paybuf;
-
-  counter_type n_bytes;		 /* how many bytes sent/recvd since last key exchange */
-  counter_type n_packets;	 /* how many packets sent/recvd since last key exchange */
-
-  /*
-   * If bad username/password, TLS connection will come up but 'authenticated' will be false.
-   */
-  bool authenticated;
-  time_t auth_deferred_expire;
-
-#ifdef ENABLE_DEF_AUTH
-  /* If auth_deferred is true, authentication is being deferred */
-  bool auth_deferred;
-#ifdef MANAGEMENT_DEF_AUTH
-  unsigned int mda_key_id;
-  unsigned int mda_status;
-#endif
-#ifdef PLUGIN_DEF_AUTH
-  unsigned int auth_control_status;
-  time_t acf_last_mod;
-  char *auth_control_file;
-#endif
-#endif
-};
-
-/*
- * Our const options, obtained directly or derived from
- * command line options.
- */
-struct tls_options
-{
-  /* our master SSL_CTX from which all SSL objects derived */
-  SSL_CTX *ssl_ctx;
-
-  /* data channel cipher, hmac, and key lengths */
-  struct key_type key_type;
-
-  /* true if we are a TLS server, client otherwise */
-  bool server;
-
-  /* if true, don't xmit until first packet from peer is received */
-  bool xmit_hold;
-
-#ifdef ENABLE_OCC
-  /* local and remote options strings
-     that must match between client and server */
-  const char *local_options;
-  const char *remote_options;
-#endif
-
-  /* from command line */
-  int key_method;
-  bool replay;
-  bool single_session;
-#ifdef ENABLE_OCC
-  bool disable_occ;
-#endif
-#ifdef ENABLE_PUSH_PEER_INFO
-  bool push_peer_info;
-#endif
-  int transition_window;
-  int handshake_window;
-  interval_t packet_timeout;
-  int renegotiate_bytes;
-  int renegotiate_packets;
-  interval_t renegotiate_seconds;
-
-  /* cert verification parms */
-  const char *verify_command;
-  const char *verify_export_cert;
-  const char *verify_x509name;
-  const char *crl_file;
-  int ns_cert_type;
-  unsigned remote_cert_ku[MAX_PARMS];
-  const char *remote_cert_eku;
-
-  /* allow openvpn config info to be
-     passed over control channel */
-  bool pass_config_info;
-
-  /* struct crypto_option flags */
-  unsigned int crypto_flags_and;
-  unsigned int crypto_flags_or;
-
-  int replay_window;                   /* --replay-window parm */
-  int replay_time;                     /* --replay-window parm */
-
-  /* packet authentication for TLS handshake */
-  struct crypto_options tls_auth;
-  struct key_ctx_bi tls_auth_key;
-
-  /* frame parameters for TLS control channel */
-  struct frame frame;
-
-  /* used for username/password authentication */
-  const char *auth_user_pass_verify_script;
-  bool auth_user_pass_verify_script_via_file;
-  const char *tmp_dir;
-
-  /* use the client-config-dir as a positive authenticator */
-  const char *client_config_dir_exclusive;
-
-  /* instance-wide environment variable set */
-  struct env_set *es;
-  const struct plugin_list *plugins;
-
-  /* configuration file boolean options */
-# define SSLF_CLIENT_CERT_NOT_REQUIRED (1<<0)
-# define SSLF_USERNAME_AS_COMMON_NAME  (1<<1)
-# define SSLF_AUTH_USER_PASS_OPTIONAL  (1<<2)
-# define SSLF_NO_NAME_REMAPPING        (1<<3)
-# define SSLF_OPT_VERIFY               (1<<4)
-  unsigned int ssl_flags;
-
-#ifdef MANAGEMENT_DEF_AUTH
-  struct man_def_auth_context *mda_context;
-#endif
-
-  /* --gremlin bits */
-  int gremlin;
-};
-
-/* index into tls_session.key */
-#define KS_PRIMARY    0		/* the primary key */
-#define KS_LAME_DUCK  1		/* the key that's going to retire soon */
-#define KS_SIZE       2
-
-/*
- * A tls_session lives through multiple key_state life-cycles.  Soft resets
- * will reuse a tls_session object, but hard resets or errors will require
- * that a fresh object be built.  Normally three tls_session objects are maintained
- * by an active openvpn session.  The first is the current, TLS authenticated
- * session, the second is used to process connection requests from a new
- * client that would usurp the current session if successfully authenticated,
- * and the third is used as a repository for a "lame-duck" key in the event
- * that the primary session resets due to error while the lame-duck key still
- * has time left before its expiration.  Lame duck keys are used to maintain
- * the continuity of the data channel connection while a new key is being
- * negotiated.
- */
-struct tls_session
-{
-  /* const options and config info */
-  const struct tls_options *opt;
-
-  /* during hard reset used to control burst retransmit */
-  bool burst;
-
-  /* authenticate control packets */
-  struct crypto_options tls_auth;
-  struct packet_id tls_auth_pid;
-
-  int initial_opcode;		/* our initial P_ opcode */
-  struct session_id session_id;	/* our random session ID */
-  int key_id;			/* increments with each soft reset (for key renegotiation) */
-
-  int limit_next;               /* used for traffic shaping on the control channel */
-
-  int verify_maxlevel;
-
-  char *common_name;
-
-  struct cert_hash_set *cert_hash_set;
-
-#ifdef ENABLE_PF
-  uint32_t common_name_hashval;
-#endif
-
-  bool verified;                /* true if peer certificate was verified against CA */
-
-  /* not-yet-authenticated incoming client */
-  struct link_socket_actual untrusted_addr;
-
-  struct key_state key[KS_SIZE];
-};
-
-/* index into tls_multi.session */
-#define TM_ACTIVE    0
-#define TM_UNTRUSTED 1
-#define TM_LAME_DUCK 2
-#define TM_SIZE      3
-
-/*
- * The number of keys we will scan on encrypt or decrypt.  The first
- * is the "active" key.  The second is the lame_duck or retiring key
- * associated with the active key's session ID.  The third is a detached
- * lame duck session that only occurs in situations where a key renegotiate
- * failed on the active key, but a lame duck key was still valid.  By
- * preserving the lame duck session, we can be assured of having a data
- * channel key available even when network conditions are so bad that
- * we can't negotiate a new key within the time allotted.
- */
-#define KEY_SCAN_SIZE 3
-
-/*
- * An openvpn session running with TLS enabled has one tls_multi object.
- */
-struct tls_multi
-{
-  /* const options and config info */
-  struct tls_options opt;
-
-  /*
-   * A list of key_state objects in the order they should be
-   * scanned by data channel encrypt and decrypt routines.
-   */
-  struct key_state* key_scan[KEY_SCAN_SIZE];
-
-  /*
-   * used by tls_pre_encrypt to communicate the encrypt key
-   * to tls_post_encrypt()
-   */
-  struct key_state *save_ks;	/* temporary pointer used between pre/post routines */
-
-  /*
-   * Used to return outgoing address from
-   * tls_multi_process.
-   */
-  struct link_socket_actual to_link_addr;
-
-  /*
-   * Number of sessions negotiated thus far.
-   */
-  int n_sessions;
-
-  /*
-   * Number of errors.
-   */
-  int n_hard_errors;   /* errors due to TLS negotiation failure */
-  int n_soft_errors;   /* errors due to unrecognized or failed-to-authenticate incoming packets */
-
-  /*
-   * Our locked common name, username, and cert hashes (cannot change during the life of this tls_multi object)
-   */
-  char *locked_cn;
-  char *locked_username;
-  struct cert_hash_set *locked_cert_hash_set;
-
-#ifdef ENABLE_DEF_AUTH
-  /*
-   * An error message to send to client on AUTH_FAILED
-   */
-  char *client_reason;
-
-  /*
-   * A multi-line string of general-purpose info received from peer
-   * over control channel.
-   */
-  char *peer_info;
-
-  /* Time of last call to tls_authentication_status */
-  time_t tas_last;
-#endif
-
-  /*
-   * Our session objects.
-   */
-  struct tls_session session[TM_SIZE];
-};
-
-/*
- * Used in --mode server mode to check tls-auth signature on initial
- * packets received from new clients.
- */
-struct tls_auth_standalone
-{
-  struct key_ctx_bi tls_auth_key;
-  struct crypto_options tls_auth_options;
-  struct frame frame;
-};
-
-void init_ssl_lib (void);
-void free_ssl_lib (void);
-
-/* Build master SSL_CTX object that serves for the whole of openvpn instantiation */
-SSL_CTX *init_ssl (const struct options *options);
-
-struct tls_multi *tls_multi_init (struct tls_options *tls_options);
-
-struct tls_auth_standalone *tls_auth_standalone_init (struct tls_options *tls_options,
-						      struct gc_arena *gc);
-
-void tls_auth_standalone_finalize (struct tls_auth_standalone *tas,
-				   const struct frame *frame);
-
-void tls_multi_init_finalize(struct tls_multi *multi,
-			     const struct frame *frame);
-
-void tls_multi_init_set_options(struct tls_multi* multi,
-				const char *local,
-				const char *remote);
-
-#define TLSMP_INACTIVE 0
-#define TLSMP_ACTIVE   1
-#define TLSMP_KILL     2
-int tls_multi_process (struct tls_multi *multi,
-		       struct buffer *to_link,
-		       struct link_socket_actual **to_link_addr,
-		       struct link_socket_info *to_link_socket_info,
-		       interval_t *wakeup);
-
-void tls_multi_free (struct tls_multi *multi, bool clear);
-
-bool tls_pre_decrypt (struct tls_multi *multi,
-		      const struct link_socket_actual *from,
-		      struct buffer *buf,
-		      struct crypto_options *opt);
-
-bool tls_pre_decrypt_lite (const struct tls_auth_standalone *tas,
-			   const struct link_socket_actual *from,
-			   const struct buffer *buf);
-
-void tls_pre_encrypt (struct tls_multi *multi,
-		      struct buffer *buf, struct crypto_options *opt);
-
-void tls_post_encrypt (struct tls_multi *multi, struct buffer *buf);
-
-void show_available_tls_ciphers (void);
-void get_highest_preference_tls_cipher (char *buf, int size);
-
-void pem_password_setup (const char *auth_file);
-int pem_password_callback (char *buf, int size, int rwflag, void *u);
-void auth_user_pass_setup (const char *auth_file);
-void ssl_set_auth_nocache (void);
-void ssl_purge_auth (void);
-
-
-#ifdef ENABLE_CLIENT_CR
-/*
- * ssl_get_auth_challenge will parse the server-pushed auth-failed
- * reason string and return a dynamically allocated
- * auth_challenge_info struct.
- */
-void ssl_purge_auth_challenge (void);
-void ssl_put_auth_challenge (const char *cr_str);
-#endif
-
-void tls_set_verify_command (const char *cmd);
-void tls_set_crl_verify (const char *crl);
-void tls_set_verify_x509name (const char *x509name);
-
-void tls_adjust_frame_parameters(struct frame *frame);
-
-bool tls_send_payload (struct tls_multi *multi,
-		       const uint8_t *data,
-		       int size);
-
-bool tls_rec_payload (struct tls_multi *multi,
-		      struct buffer *buf);
-
-const char *tls_common_name (const struct tls_multi* multi, const bool null);
-void tls_set_common_name (struct tls_multi *multi, const char *common_name);
-void tls_lock_common_name (struct tls_multi *multi);
-void tls_lock_cert_hash_set (struct tls_multi *multi);
-
-#define TLS_AUTHENTICATION_SUCCEEDED  0
-#define TLS_AUTHENTICATION_FAILED     1
-#define TLS_AUTHENTICATION_DEFERRED   2
-#define TLS_AUTHENTICATION_UNDEFINED  3
-int tls_authentication_status (struct tls_multi *multi, const int latency);
-void tls_deauthenticate (struct tls_multi *multi);
-
-#ifdef MANAGEMENT_DEF_AUTH
-bool tls_authenticate_key (struct tls_multi *multi, const unsigned int mda_key_id, const bool auth, const char *client_reason);
-
-static inline char *
-tls_get_peer_info(const struct tls_multi *multi)
-{
-  return multi->peer_info;
-}
-#endif
-
-/*
- * inline functions
- */
-
-static inline bool
-tls_initial_packet_received (const struct tls_multi *multi)
-{
-  return multi->n_sessions > 0;
-}
-
-static inline bool
-tls_test_auth_deferred_interval (const struct tls_multi *multi)
-{
-  if (multi)
-    {
-      const struct key_state *ks = &multi->session[TM_ACTIVE].key[KS_PRIMARY];
-      return now < ks->auth_deferred_expire;
-    }
-  return false;
-}
-
-static inline int
-tls_test_payload_len (const struct tls_multi *multi)
-{
-  if (multi)
-    {
-      const struct key_state *ks = &multi->session[TM_ACTIVE].key[KS_PRIMARY];
-      if (ks->state >= S_ACTIVE)
-	return BLEN (&ks->plaintext_read_buf);
-    }
-  return 0;
-}
-
-static inline void
-tls_set_single_session (struct tls_multi *multi)
-{
-  if (multi)
-    multi->opt.single_session = true;
-}
-
-static inline const char *
-tls_client_reason (struct tls_multi *multi)
-{
-#ifdef ENABLE_DEF_AUTH
-  return multi->client_reason;
-#else
-  return NULL;
-#endif
-}
-
-#ifdef ENABLE_PF
-
-static inline bool
-tls_common_name_hash (const struct tls_multi *multi, const char **cn, uint32_t *cn_hash)
-{
-  if (multi)
-    {
-      const struct tls_session *s = &multi->session[TM_ACTIVE];
-      if (s->common_name && s->common_name[0] != '\0')
-	{
-	  *cn = s->common_name;
-	  *cn_hash = s->common_name_hashval;
-	  return true;
-	}
-    }
-  return false;
-}
-
-#endif
-
-/*
- * protocol_dump() flags
- */
-#define PD_TLS_AUTH_HMAC_SIZE_MASK 0xFF
-#define PD_SHOW_DATA               (1<<8)
-#define PD_TLS                     (1<<9)
-#define PD_VERBOSE                 (1<<10)
-
-const char *protocol_dump (struct buffer *buffer,
-			   unsigned int flags,
-			   struct gc_arena *gc);
-
-/*
- * debugging code
- */
-
-#ifdef MEASURE_TLS_HANDSHAKE_STATS
-void show_tls_performance_stats(void);
-#endif
-
-/*#define EXTRACT_X509_FIELD_TEST*/
-void extract_x509_field_test (void);
-
-#endif /* USE_CRYPTO && USE_SSL */
-
-#endif