1 /* 2 * Author: Tatu Ylonen <ylo@cs.hut.fi> 3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 4 * All rights reserved 5 * Interface for the packet protocol functions. 6 * 7 * As far as I am concerned, the code I have written for this software 8 * can be used freely for any purpose. Any derived versions of this 9 * software must be clearly marked as such, and if the derived work is 10 * incompatible with the protocol description in the RFC file, it must be 11 * called by a name other than "ssh" or "Secure Shell". 12 */ 13 14 /* RCSID("$OpenBSD: packet.h,v 1.32 2001/12/28 14:50:54 markus Exp $"); */ 15 16 #ifndef PACKET_H 17 #define PACKET_H 18 19 #include <openssl/bn.h> 20 21 void packet_set_connection(int, int); 22 void packet_set_nonblocking(void); 23 int packet_get_connection_in(void); 24 int packet_get_connection_out(void); 25 void packet_close(void); 26 void packet_set_encryption_key(const u_char *, u_int, int); 27 void packet_set_protocol_flags(u_int); 28 u_int packet_get_protocol_flags(void); 29 void packet_start_compression(int); 30 void packet_set_interactive(int); 31 int packet_is_interactive(void); 32 33 void packet_start(u_char); 34 void packet_put_char(int ch); 35 void packet_put_int(u_int value); 36 void packet_put_bignum(BIGNUM * value); 37 void packet_put_bignum2(BIGNUM * value); 38 void packet_put_string(const void *buf, u_int len); 39 void packet_put_cstring(const char *str); 40 void packet_put_raw(const void *buf, u_int len); 41 void packet_send(void); 42 43 int packet_read(void); 44 void packet_read_expect(int type); 45 int packet_read_poll(void); 46 void packet_process_incoming(const char *buf, u_int len); 47 int packet_read_seqnr(u_int32_t *seqnr_p); 48 int packet_read_poll_seqnr(u_int32_t *seqnr_p); 49 50 u_int packet_get_char(void); 51 u_int packet_get_int(void); 52 void packet_get_bignum(BIGNUM * value); 53 void packet_get_bignum2(BIGNUM * value); 54 void *packet_get_raw(int *length_ptr); 55 void *packet_get_string(u_int *length_ptr); 56 void packet_disconnect(const char *fmt,...) __attribute__((format(printf, 1, 2))); 57 void packet_send_debug(const char *fmt,...) __attribute__((format(printf, 1, 2))); 58 59 void packet_write_poll(void); 60 void packet_write_wait(void); 61 int packet_have_data_to_write(void); 62 int packet_not_very_much_data_to_write(void); 63 64 int packet_connection_is_on_socket(void); 65 int packet_connection_is_ipv4(void); 66 int packet_remaining(void); 67 void packet_send_ignore(int); 68 void packet_add_padding(u_char); 69 70 void tty_make_modes(int, struct termios *); 71 void tty_parse_modes(int, int *); 72 73 extern int max_packet_size; 74 int packet_set_maxsize(int); 75 #define packet_get_maxsize() max_packet_size 76 77 /* don't allow remaining bytes after the end of the message */ 78 #define packet_check_eom() \ 79 do { \ 80 int _len = packet_remaining(); \ 81 if (_len > 0) { \ 82 log("Packet integrity error (%d bytes remaining) at %s:%d", \ 83 _len ,__FILE__, __LINE__); \ 84 packet_disconnect("Packet integrity error."); \ 85 } \ 86 } while (0) 87 88 #endif /* PACKET_H */ 89