1 /* $OpenBSD: sshconnect.h,v 1.28 2013/10/16 02:31:47 djm Exp $ */ 2 3 /* 4 * Copyright (c) 2000 Markus Friedl. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 typedef struct Sensitive Sensitive; 28 struct Sensitive { 29 Key **keys; 30 int nkeys; 31 int external_keysign; 32 }; 33 34 struct addrinfo; 35 int ssh_connect(const char *, struct addrinfo *, struct sockaddr_storage *, 36 u_short, int, int, int *, int, int); 37 void ssh_kill_proxy_command(void); 38 39 void ssh_login(Sensitive *, const char *, struct sockaddr *, u_short, 40 struct passwd *, int); 41 42 void ssh_exchange_identification(int); 43 44 int verify_host_key(char *, struct sockaddr *, Key *); 45 46 void get_hostfile_hostname_ipaddr(char *, struct sockaddr *, u_short, 47 char **, char **); 48 49 void ssh_kex(char *, struct sockaddr *); 50 void ssh_kex2(char *, struct sockaddr *, u_short); 51 52 void ssh_userauth1(const char *, const char *, char *, Sensitive *); 53 void ssh_userauth2(const char *, const char *, char *, Sensitive *); 54 55 void ssh_put_password(char *); 56 int ssh_local_cmd(const char *); 57 58 /* 59 * Macros to raise/lower permissions. 60 */ 61 #define PRIV_START do { \ 62 int save_errno = errno; \ 63 if (seteuid(original_effective_uid) != 0) \ 64 fatal("PRIV_START: seteuid: %s", \ 65 strerror(errno)); \ 66 errno = save_errno; \ 67 } while (0) 68 69 #define PRIV_END do { \ 70 int save_errno = errno; \ 71 if (seteuid(original_real_uid) != 0) \ 72 fatal("PRIV_END: seteuid: %s", \ 73 strerror(errno)); \ 74 errno = save_errno; \ 75 } while (0) 76