1 /* $MirOS: src/usr.bin/ssh/packet.h,v 1.7 2013/10/31 20:07:12 tg Exp $ */ 2 /* $OpenBSD: packet.h,v 1.52 2009/06/27 09:29:06 andreas Exp $ */ 3 4 /* 5 * Author: Tatu Ylonen <ylo@cs.hut.fi> 6 * Copyright © 2013 7 * Thorsten “mirabilos” Glaser <tg@mirbsd.org> 8 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 9 * All rights reserved 10 * Interface for the packet protocol functions. 11 * 12 * As far as I am concerned, the code I have written for this software 13 * can be used freely for any purpose. Any derived versions of this 14 * software must be clearly marked as such, and if the derived work is 15 * incompatible with the protocol description in the RFC file, it must be 16 * called by a name other than "ssh" or "Secure Shell". 17 */ 18 19 #ifndef PACKET_H 20 #define PACKET_H 21 22 #include <termios.h> 23 24 #include <openssl/bn.h> 25 26 void packet_set_connection(int, int); 27 void packet_set_timeout(int, int); 28 void packet_set_nonblocking(void); 29 int packet_get_connection_in(void); 30 int packet_get_connection_out(void); 31 void packet_close(void); 32 void packet_set_encryption_key(const u_char *, u_int, int); 33 u_int packet_get_encryption_key(u_char *); 34 void packet_set_protocol_flags(u_int); 35 u_int packet_get_protocol_flags(void); 36 void packet_start_compression(int); 37 void packet_set_interactive(int); 38 int packet_is_interactive(void); 39 void packet_set_server(void); 40 void packet_set_authenticated(void); 41 42 void packet_start(u_char); 43 void packet_put_char(int ch); 44 void packet_put_int(u_int value); 45 void packet_put_int64(u_int64_t value); 46 void packet_put_bignum(BIGNUM * value); 47 void packet_put_bignum2(BIGNUM * value); 48 void packet_put_string(const void *buf, u_int len); 49 void packet_put_cstring(const char *str); 50 void packet_put_raw(const void *buf, u_int len); 51 void packet_send(void); 52 53 int packet_read(void); 54 void packet_read_expect(int type); 55 int packet_read_poll(void); 56 void packet_process_incoming(const char *buf, u_int len); 57 int packet_read_seqnr(u_int32_t *seqnr_p); 58 int packet_read_poll_seqnr(u_int32_t *seqnr_p); 59 60 u_int packet_get_char(void); 61 u_int packet_get_int(void); 62 u_int64_t packet_get_int64(void); 63 void packet_get_bignum(BIGNUM * value); 64 void packet_get_bignum2(BIGNUM * value); 65 void *packet_get_raw(u_int *length_ptr); 66 void *packet_get_string(u_int *length_ptr); 67 void *packet_get_string_ptr(u_int *length_ptr); 68 void packet_disconnect(const char *fmt,...) __dead __attribute__((__format__(__printf__, 1, 2))); 69 void packet_send_debug(const char *fmt,...) __attribute__((__format__(__printf__, 1, 2))); 70 71 void set_newkeys(int mode); 72 int packet_get_keyiv_len(int); 73 void packet_get_keyiv(int, u_char *, u_int); 74 int packet_get_keycontext(int, u_char *); 75 void packet_set_keycontext(int, u_char *); 76 void packet_get_state(int, u_int32_t *, u_int64_t *, u_int32_t *, u_int64_t *); 77 void packet_set_state(int, u_int32_t, u_int64_t, u_int32_t, u_int64_t); 78 int packet_get_ssh1_cipher(void); 79 void packet_set_iv(int, u_char *); 80 void *packet_get_newkeys(int); 81 82 void packet_write_poll(void); 83 void packet_write_wait(void); 84 int packet_have_data_to_write(void); 85 int packet_not_very_much_data_to_write(void); 86 87 int packet_connection_is_on_socket(void); 88 int packet_connection_is_ipv4(void); 89 int packet_remaining(void); 90 void packet_send_ignore(int); 91 void packet_add_padding(u_char); 92 93 void tty_make_modes(int, struct termios *); 94 void tty_parse_modes(int, int *); 95 96 void packet_set_alive_timeouts(int); 97 int packet_inc_alive_timeouts(void); 98 int packet_set_maxsize(u_int); 99 u_int packet_get_maxsize(void); 100 101 /* don't allow remaining bytes after the end of the message */ 102 #define packet_check_eom() \ 103 do { \ 104 int _len = packet_remaining(); \ 105 if (_len > 0) { \ 106 logit("Packet integrity error (%d bytes remaining) at %s:%d", \ 107 _len ,__FILE__, __LINE__); \ 108 packet_disconnect("Packet integrity error."); \ 109 } \ 110 } while (0) 111 112 int packet_need_rekeying(void); 113 void packet_set_rekey_limit(u_int32_t); 114 115 void packet_backup_state(void); 116 void packet_restore_state(void); 117 118 void *packet_get_input(void); 119 void *packet_get_output(void); 120 121 #endif /* PACKET_H */ 122