-/*
- * Sets the socket used for communication. Disables encryption until
- * packet_set_encryption_key is called. It is permissible that fd_in and
- * fd_out are the same descriptor; in that case it is assumed to be a socket.
- */
-void packet_set_connection(int fd_in, int fd_out);
-
-/* Puts the connection file descriptors into non-blocking mode. */
-void packet_set_nonblocking(void);
-
-/* Returns the file descriptor used for input. */
-int packet_get_connection_in(void);
-
-/* Returns the file descriptor used for output. */
-int packet_get_connection_out(void);
-
-/*
- * Closes the connection (both descriptors) and clears and frees internal
- * data structures.
- */
-void packet_close(void);
-
-/*
- * Causes any further packets to be encrypted using the given key. The same
- * key is used for both sending and reception. However, both directions are
- * encrypted independently of each other. Cipher types are defined in ssh.h.
- */
-void
-packet_set_encryption_key(const u_char *key, u_int keylen,
- int cipher_type);
-
-/*
- * Sets remote side protocol flags for the current connection. This can be
- * called at any time.
- */
-void packet_set_protocol_flags(u_int flags);
-
-/* Returns the remote protocol flags set earlier by the above function. */
-u_int packet_get_protocol_flags(void);
-
-/* Enables compression in both directions starting from the next packet. */
-void packet_start_compression(int level);
-
-/*
- * Informs that the current session is interactive. Sets IP flags for
- * optimal performance in interactive use.
- */
-void packet_set_interactive(int interactive);
-
-/* Returns true if the current connection is interactive. */
-int packet_is_interactive(void);
-
-/* Starts constructing a packet to send. */
-void packet_start(int type);
-
-/* Appends a character to the packet data. */
-void packet_put_char(int ch);
-
-/* Appends an integer to the packet data. */
-void packet_put_int(u_int value);
-
-/* Appends an arbitrary precision integer to packet data. */
-void packet_put_bignum(BIGNUM * value);
-void packet_put_bignum2(BIGNUM * value);
-
-/* Appends a string to packet data. */
-void packet_put_string(const char *buf, u_int len);
-void packet_put_cstring(const char *str);
-void packet_put_raw(const char *buf, u_int len);
-
-/*
- * Finalizes and sends the packet. If the encryption key has been set,
- * encrypts the packet before sending.
- */
-void packet_send(void);
-
-/* Waits until a packet has been received, and returns its type. */
-int packet_read(int *payload_len_ptr);
-
-/*
- * Waits until a packet has been received, verifies that its type matches
- * that given, and gives a fatal error and exits if there is a mismatch.
- */
-void packet_read_expect(int *payload_len_ptr, int type);
-
-/*
- * Checks if a full packet is available in the data received so far via
- * packet_process_incoming. If so, reads the packet; otherwise returns
- * SSH_MSG_NONE. This does not wait for data from the connection.
- * SSH_MSG_DISCONNECT is handled specially here. Also, SSH_MSG_IGNORE
- * messages are skipped by this function and are never returned to higher
- * levels.
- */
-int packet_read_poll(int *packet_len_ptr);
-
-/*
- * Buffers the given amount of input characters. This is intended to be used
- * together with packet_read_poll.
- */
-void packet_process_incoming(const char *buf, u_int len);
-
-/* Returns a character (0-255) from the packet data. */
-u_int packet_get_char(void);
-
-/* Returns an integer from the packet data. */
-u_int packet_get_int(void);
+void packet_set_connection(int, int);
+void packet_set_nonblocking(void);
+int packet_get_connection_in(void);
+int packet_get_connection_out(void);
+void packet_close(void);
+void packet_set_encryption_key(const u_char *, u_int, int);
+u_int packet_get_encryption_key(u_char *);
+void packet_set_protocol_flags(u_int);
+u_int packet_get_protocol_flags(void);
+void packet_start_compression(int);
+void packet_set_interactive(int);
+int packet_is_interactive(void);
+
+void packet_start(u_char);
+void packet_put_char(int ch);
+void packet_put_int(u_int value);
+void packet_put_bignum(BIGNUM * value);
+void packet_put_bignum2(BIGNUM * value);
+void packet_put_string(const void *buf, u_int len);
+void packet_put_cstring(const char *str);
+void packet_put_raw(const void *buf, u_int len);
+void packet_send(void);
+
+int packet_read(void);
+void packet_read_expect(int type);
+int packet_read_poll(void);
+void packet_process_incoming(const char *buf, u_int len);
+int packet_read_seqnr(u_int32_t *seqnr_p);
+int packet_read_poll_seqnr(u_int32_t *seqnr_p);
+
+u_int packet_get_char(void);
+u_int packet_get_int(void);
+void packet_get_bignum(BIGNUM * value);
+void packet_get_bignum2(BIGNUM * value);
+void *packet_get_raw(int *length_ptr);
+void *packet_get_string(u_int *length_ptr);
+void packet_disconnect(const char *fmt,...) __attribute__((format(printf, 1, 2)));
+void packet_send_debug(const char *fmt,...) __attribute__((format(printf, 1, 2)));
+
+void set_newkeys(int mode);
+int packet_get_keyiv_len(int);
+void packet_get_keyiv(int, u_char *, u_int);
+int packet_get_keycontext(int, u_char *);
+void packet_set_keycontext(int, u_char *);
+void packet_get_state(int, u_int32_t *, u_int64_t *, u_int32_t *);
+void packet_set_state(int, u_int32_t, u_int64_t, u_int32_t);
+int packet_get_ssh1_cipher(void);
+void packet_set_iv(int, u_char *);
+
+void packet_write_poll(void);
+void packet_write_wait(void);
+int packet_have_data_to_write(void);
+int packet_not_very_much_data_to_write(void);
+
+int packet_connection_is_on_socket(void);
+int packet_connection_is_ipv4(void);
+int packet_remaining(void);
+void packet_send_ignore(int);
+void packet_add_padding(u_char);
+
+void tty_make_modes(int, struct termios *);
+void tty_parse_modes(int, int *);