-/* 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, unsigned int len);
-void packet_put_cstring(const char *str);
-void packet_put_raw(const char *buf, unsigned 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, unsigned int len);
-
-/* Returns a character (0-255) from the packet data. */
-unsigned int packet_get_char(void);
-
-/* Returns an integer from the packet data. */
-unsigned int packet_get_int(void);
-
-/*
- * Returns an arbitrary precision integer from the packet data. The integer
- * must have been initialized before this call.
- */
-void packet_get_bignum(BIGNUM * value, int *length_ptr);
-void packet_get_bignum2(BIGNUM * value, int *length_ptr);
-char *packet_get_raw(int *length_ptr);
-
-/*
- * Returns a string from the packet data. The string is allocated using
- * xmalloc; it is the responsibility of the calling program to free it when
- * no longer needed. The length_ptr argument may be NULL, or point to an
- * integer into which the length of the string is stored.
- */
-char *packet_get_string(unsigned int *length_ptr);
-
-/*
- * Logs the error in syslog using LOG_INFO, constructs and sends a disconnect
- * packet, closes the connection, and exits. This function never returns.
- * The error message should not contain a newline. The total length of the
- * message must not exceed 1024 bytes.
- */
-void packet_disconnect(const char *fmt,...) __attribute__((format(printf, 1, 2)));
-
-/*
- * Sends a diagnostic message to the other side. This message can be sent at
- * any time (but not while constructing another message). The message is
- * printed immediately, but only if the client is being executed in verbose
- * mode. These messages are primarily intended to ease debugging
- * authentication problems. The total length of the message must not exceed
- * 1024 bytes. This will automatically call packet_write_wait. If the
- * remote side protocol flags do not indicate that it supports SSH_MSG_DEBUG,
- * this will do nothing.
- */
-void packet_send_debug(const char *fmt,...) __attribute__((format(printf, 1, 2)));
-
-/* Checks if there is any buffered output, and tries to write some of the output. */
-void packet_write_poll(void);
-
-/* Waits until all pending output data has been written. */
-void packet_write_wait(void);
-
-/* Returns true if there is buffered data to write to the connection. */
-int packet_have_data_to_write(void);
-
-/* Returns true if there is not too much data to write to the connection. */
-int packet_not_very_much_data_to_write(void);
-
-/* maximum packet size, requested by client with SSH_CMSG_MAX_PACKET_SIZE */
-extern int max_packet_size;
-int packet_set_maxsize(int s);
-#define packet_get_maxsize() max_packet_size
-
-/* Stores tty modes from the fd into current packet. */
-void tty_make_modes(int fd);
-
-/* Parses tty modes for the fd from the current packet. */
-void tty_parse_modes(int fd, int *n_bytes_ptr);
-
-#define packet_integrity_check(payload_len, expected_len, type) \
-do { \
- int _p = (payload_len), _e = (expected_len); \
- if (_p != _e) { \
- log("Packet integrity error (%d != %d) at %s:%d", \
- _p, _e, __FILE__, __LINE__); \
- packet_disconnect("Packet integrity error. (%d)", (type)); \
- } \
-} while (0)