| 1 | /* $OpenBSD: packet.h,v 1.35 2002/06/19 18:01:00 markus Exp $ */ |
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| 2 | |
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| 3 | /* |
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| 4 | * Author: Tatu Ylonen <ylo@cs.hut.fi> |
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| 5 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland |
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| 6 | * All rights reserved |
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| 7 | * Interface for the packet protocol functions. |
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| 8 | * |
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| 9 | * As far as I am concerned, the code I have written for this software |
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| 10 | * can be used freely for any purpose. Any derived versions of this |
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| 11 | * software must be clearly marked as such, and if the derived work is |
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| 12 | * incompatible with the protocol description in the RFC file, it must be |
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| 13 | * called by a name other than "ssh" or "Secure Shell". |
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| 14 | */ |
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| 15 | |
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| 16 | #ifndef PACKET_H |
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| 17 | #define PACKET_H |
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| 18 | |
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| 19 | #include <openssl/bn.h> |
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| 20 | |
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| 21 | void packet_set_connection(int, int); |
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| 22 | void packet_set_nonblocking(void); |
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| 23 | int packet_get_connection_in(void); |
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| 24 | int packet_get_connection_out(void); |
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| 25 | void packet_close(void); |
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| 26 | void packet_set_encryption_key(const u_char *, u_int, int); |
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| 27 | u_int packet_get_encryption_key(u_char *); |
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| 28 | void packet_set_protocol_flags(u_int); |
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| 29 | u_int packet_get_protocol_flags(void); |
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| 30 | void packet_start_compression(int); |
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| 31 | void packet_set_interactive(int); |
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| 32 | int packet_is_interactive(void); |
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| 33 | |
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| 34 | void packet_start(u_char); |
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| 35 | void packet_put_char(int ch); |
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| 36 | void packet_put_int(u_int value); |
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| 37 | void packet_put_bignum(BIGNUM * value); |
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| 38 | void packet_put_bignum2(BIGNUM * value); |
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| 39 | void packet_put_string(const void *buf, u_int len); |
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| 40 | void packet_put_cstring(const char *str); |
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| 41 | void packet_put_raw(const void *buf, u_int len); |
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| 42 | void packet_send(void); |
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| 43 | |
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| 44 | int packet_read(void); |
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| 45 | void packet_read_expect(int type); |
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| 46 | int packet_read_poll(void); |
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| 47 | void packet_process_incoming(const char *buf, u_int len); |
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| 48 | int packet_read_seqnr(u_int32_t *seqnr_p); |
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| 49 | int packet_read_poll_seqnr(u_int32_t *seqnr_p); |
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| 50 | |
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| 51 | u_int packet_get_char(void); |
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| 52 | u_int packet_get_int(void); |
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| 53 | void packet_get_bignum(BIGNUM * value); |
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| 54 | void packet_get_bignum2(BIGNUM * value); |
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| 55 | void *packet_get_raw(int *length_ptr); |
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| 56 | void *packet_get_string(u_int *length_ptr); |
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| 57 | void packet_disconnect(const char *fmt,...) __attribute__((format(printf, 1, 2))); |
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| 58 | void packet_send_debug(const char *fmt,...) __attribute__((format(printf, 1, 2))); |
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| 59 | |
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| 60 | void set_newkeys(int mode); |
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| 61 | int packet_get_keyiv_len(int); |
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| 62 | void packet_get_keyiv(int, u_char *, u_int); |
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| 63 | int packet_get_keycontext(int, u_char *); |
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| 64 | void packet_set_keycontext(int, u_char *); |
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| 65 | u_int32_t packet_get_seqnr(int); |
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| 66 | void packet_set_seqnr(int, u_int32_t); |
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| 67 | int packet_get_ssh1_cipher(void); |
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| 68 | void packet_set_iv(int, u_char *); |
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| 69 | |
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| 70 | void packet_write_poll(void); |
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| 71 | void packet_write_wait(void); |
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| 72 | int packet_have_data_to_write(void); |
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| 73 | int packet_not_very_much_data_to_write(void); |
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| 74 | |
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| 75 | int packet_connection_is_on_socket(void); |
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| 76 | int packet_connection_is_ipv4(void); |
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| 77 | int packet_remaining(void); |
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| 78 | void packet_send_ignore(int); |
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| 79 | void packet_add_padding(u_char); |
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| 80 | |
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| 81 | void tty_make_modes(int, struct termios *); |
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| 82 | void tty_parse_modes(int, int *); |
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| 83 | |
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| 84 | extern int max_packet_size; |
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| 85 | int packet_set_maxsize(int); |
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| 86 | #define packet_get_maxsize() max_packet_size |
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| 87 | |
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| 88 | /* don't allow remaining bytes after the end of the message */ |
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| 89 | #define packet_check_eom() \ |
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| 90 | do { \ |
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| 91 | int _len = packet_remaining(); \ |
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| 92 | if (_len > 0) { \ |
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| 93 | log("Packet integrity error (%d bytes remaining) at %s:%d", \ |
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| 94 | _len ,__FILE__, __LINE__); \ |
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| 95 | packet_disconnect("Packet integrity error."); \ |
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| 96 | } \ |
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| 97 | } while (0) |
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| 98 | |
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| 99 | #endif /* PACKET_H */ |
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