1 /* $OpenBSD: packet.h,v 1.35 2002/06/19 18:01:00 markus Exp $ */ 2 3 #ifndef _PACKET_H 4 #define _PACKET_H 5 6 #pragma ident "%Z%%M% %I% %E% SMI" 7 8 #ifdef __cplusplus 9 extern "C" { 10 #endif 11 12 13 /* 14 * Author: Tatu Ylonen <ylo@cs.hut.fi> 15 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 16 * All rights reserved 17 * Interface for the packet protocol functions. 18 * 19 * As far as I am concerned, the code I have written for this software 20 * can be used freely for any purpose. Any derived versions of this 21 * software must be clearly marked as such, and if the derived work is 22 * incompatible with the protocol description in the RFC file, it must be 23 * called by a name other than "ssh" or "Secure Shell". 24 */ 25 /* 26 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 27 * Use is subject to license terms. 28 */ 29 30 #include <openssl/bn.h> 31 32 #ifdef ALTPRIVSEP 33 /* Monitor-side functions */ 34 void packet_set_server(void); 35 void packet_set_no_monitor(void); 36 void packet_set_monitor(int pip_fd); 37 int packet_is_server(void); 38 int packet_is_monitor(void); 39 void packet_set_packet(const void *buf, u_int len); 40 #endif /* ALTPRIVSEP */ 41 42 void packet_set_connection(int, int); 43 void packet_set_nonblocking(void); 44 int packet_get_connection_in(void); 45 int packet_get_connection_out(void); 46 void packet_close(void); 47 void packet_set_encryption_key(const u_char *, u_int, int); 48 u_int packet_get_encryption_key(u_char *); 49 void packet_set_protocol_flags(u_int); 50 u_int packet_get_protocol_flags(void); 51 void packet_start_compression(int); 52 void packet_set_interactive(int); 53 int packet_is_interactive(void); 54 55 void packet_start(u_char); 56 void packet_put_char(int ch); 57 void packet_put_int(u_int value); 58 void packet_put_bignum(BIGNUM * value); 59 void packet_put_bignum2(BIGNUM * value); 60 void packet_put_string(const void *buf, u_int len); 61 void packet_put_cstring(const char *str); 62 void packet_put_ascii_cstring(const char *str); 63 void packet_put_utf8_cstring(const u_char *str); 64 void packet_put_raw(const void *buf, u_int len); 65 void packet_send(void); 66 67 #if 0 68 /* If these are needed, then get rid of the #if 0 and this comment */ 69 void packet_put_utf8_string(const u_char *buf, u_int len); 70 void packet_put_ascii_string(const char *str, u_int len); 71 #endif 72 73 int packet_read(void); 74 void packet_read_expect(int type); 75 int packet_read_poll(void); 76 void packet_process_incoming(const char *buf, u_int len); 77 int packet_read_seqnr(u_int32_t *seqnr_p); 78 int packet_read_poll_seqnr(u_int32_t *seqnr_p); 79 80 u_int packet_get_char(void); 81 u_int packet_get_int(void); 82 void packet_get_bignum(BIGNUM * value); 83 void packet_get_bignum2(BIGNUM * value); 84 void *packet_get_raw(u_int *length_ptr); 85 void *packet_get_string(u_int *length_ptr); 86 char *packet_get_ascii_cstring(); 87 u_char *packet_get_utf8_cstring(); 88 void packet_disconnect(const char *fmt,...) __attribute__((format(printf, 1, 2))); 89 void packet_send_debug(const char *fmt,...) __attribute__((format(printf, 1, 2))); 90 91 void set_newkeys(int mode); 92 int packet_get_keyiv_len(int); 93 void packet_get_keyiv(int, u_char *, u_int); 94 int packet_get_keycontext(int, u_char *); 95 void packet_set_keycontext(int, u_char *); 96 u_int32_t packet_get_seqnr(int); 97 void packet_set_seqnr(int, u_int32_t); 98 int packet_get_ssh1_cipher(void); 99 void packet_set_iv(int, u_char *); 100 101 void packet_write_poll(void); 102 void packet_write_wait(void); 103 int packet_have_data_to_write(void); 104 int packet_not_very_much_data_to_write(void); 105 106 int packet_connection_is_on_socket(void); 107 int packet_connection_is_ipv4(void); 108 int packet_remaining(void); 109 void packet_send_ignore(int); 110 void packet_add_padding(u_char); 111 112 void tty_make_modes(int, struct termios *); 113 void tty_parse_modes(int, int *); 114 115 extern int max_packet_size; 116 int packet_set_maxsize(int); 117 #define packet_get_maxsize() max_packet_size 118 119 /* don't allow remaining bytes after the end of the message */ 120 #define packet_check_eom() \ 121 do { \ 122 int _len = packet_remaining(); \ 123 if (_len > 0) { \ 124 log("Packet integrity error (%d bytes remaining) at %s:%d", \ 125 _len ,__FILE__, __LINE__); \ 126 packet_disconnect("Packet integrity error."); \ 127 } \ 128 } while (0) 129 130 #ifdef __cplusplus 131 } 132 #endif 133 134 #endif /* _PACKET_H */ 135