misc.h revision 295367
1/* $OpenBSD: misc.h,v 1.54 2014/07/15 15:54:14 millert Exp $ */ 2 3/* 4 * Author: Tatu Ylonen <ylo@cs.hut.fi> 5 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland 6 * All rights reserved 7 * 8 * As far as I am concerned, the code I have written for this software 9 * can be used freely for any purpose. Any derived versions of this 10 * software must be clearly marked as such, and if the derived work is 11 * incompatible with the protocol description in the RFC file, it must be 12 * called by a name other than "ssh" or "Secure Shell". 13 */ 14 15#ifndef _MISC_H 16#define _MISC_H 17 18/* Data structure for representing a forwarding request. */ 19struct Forward { 20 char *listen_host; /* Host (address) to listen on. */ 21 int listen_port; /* Port to forward. */ 22 char *listen_path; /* Path to bind domain socket. */ 23 char *connect_host; /* Host to connect. */ 24 int connect_port; /* Port to connect on connect_host. */ 25 char *connect_path; /* Path to connect domain socket. */ 26 int allocated_port; /* Dynamically allocated listen port */ 27 int handle; /* Handle for dynamic listen ports */ 28}; 29 30/* Common server and client forwarding options. */ 31struct ForwardOptions { 32 int gateway_ports; /* Allow remote connects to forwarded ports. */ 33 mode_t streamlocal_bind_mask; /* umask for streamlocal binds */ 34 int streamlocal_bind_unlink; /* unlink socket before bind */ 35}; 36 37/* misc.c */ 38 39char *chop(char *); 40char *strdelim(char **); 41int set_nonblock(int); 42int unset_nonblock(int); 43void set_nodelay(int); 44int a2port(const char *); 45int a2tun(const char *, int *); 46char *put_host_port(const char *, u_short); 47char *hpdelim(char **); 48char *cleanhostname(char *); 49char *colon(char *); 50long convtime(const char *); 51char *tilde_expand_filename(const char *, uid_t); 52char *percent_expand(const char *, ...) __attribute__((__sentinel__)); 53char *tohex(const void *, size_t); 54void sanitise_stdfd(void); 55void ms_subtract_diff(struct timeval *, int *); 56void ms_to_timeval(struct timeval *, int); 57time_t monotime(void); 58void lowercase(char *s); 59int unix_listener(const char *, int, int); 60 61void sock_set_v6only(int); 62 63struct passwd *pwcopy(struct passwd *); 64const char *ssh_gai_strerror(int); 65 66typedef struct arglist arglist; 67struct arglist { 68 char **list; 69 u_int num; 70 u_int nalloc; 71}; 72void addargs(arglist *, char *, ...) 73 __attribute__((format(printf, 2, 3))); 74void replacearg(arglist *, u_int, char *, ...) 75 __attribute__((format(printf, 3, 4))); 76void freeargs(arglist *); 77 78int tun_open(int, int); 79 80/* Common definitions for ssh tunnel device forwarding */ 81#define SSH_TUNMODE_NO 0x00 82#define SSH_TUNMODE_POINTOPOINT 0x01 83#define SSH_TUNMODE_ETHERNET 0x02 84#define SSH_TUNMODE_DEFAULT SSH_TUNMODE_POINTOPOINT 85#define SSH_TUNMODE_YES (SSH_TUNMODE_POINTOPOINT|SSH_TUNMODE_ETHERNET) 86 87#define SSH_TUNID_ANY 0x7fffffff 88#define SSH_TUNID_ERR (SSH_TUNID_ANY - 1) 89#define SSH_TUNID_MAX (SSH_TUNID_ANY - 2) 90 91/* Fake port to indicate that host field is really a path. */ 92#define PORT_STREAMLOCAL -2 93 94/* Functions to extract or store big-endian words of various sizes */ 95u_int64_t get_u64(const void *) 96 __attribute__((__bounded__( __minbytes__, 1, 8))); 97u_int32_t get_u32(const void *) 98 __attribute__((__bounded__( __minbytes__, 1, 4))); 99u_int16_t get_u16(const void *) 100 __attribute__((__bounded__( __minbytes__, 1, 2))); 101void put_u64(void *, u_int64_t) 102 __attribute__((__bounded__( __minbytes__, 1, 8))); 103void put_u32(void *, u_int32_t) 104 __attribute__((__bounded__( __minbytes__, 1, 4))); 105void put_u16(void *, u_int16_t) 106 __attribute__((__bounded__( __minbytes__, 1, 2))); 107 108/* Little-endian store/load, used by umac.c */ 109u_int32_t get_u32_le(const void *) 110 __attribute__((__bounded__(__minbytes__, 1, 4))); 111void put_u32_le(void *, u_int32_t) 112 __attribute__((__bounded__(__minbytes__, 1, 4))); 113 114struct bwlimit { 115 size_t buflen; 116 u_int64_t rate, thresh, lamt; 117 struct timeval bwstart, bwend; 118}; 119 120void bandwidth_limit_init(struct bwlimit *, u_int64_t, size_t); 121void bandwidth_limit(struct bwlimit *, size_t); 122 123int parse_ipqos(const char *); 124const char *iptos2str(int); 125void mktemp_proto(char *, size_t); 126 127/* readpass.c */ 128 129#define RP_ECHO 0x0001 130#define RP_ALLOW_STDIN 0x0002 131#define RP_ALLOW_EOF 0x0004 132#define RP_USE_ASKPASS 0x0008 133 134char *read_passphrase(const char *, int); 135int ask_permission(const char *, ...) __attribute__((format(printf, 1, 2))); 136int read_keyfile_line(FILE *, const char *, char *, size_t, u_long *); 137 138#endif /* _MISC_H */ 139