Annotation of src/usr.bin/ssh/misc.h, Revision 1.94
1.94 ! djm 1: /* $OpenBSD: misc.h,v 1.93 2021/02/15 20:36:35 markus Exp $ */
1.2 niklas 2:
1.1 markus 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: */
1.10 markus 14:
1.31 djm 15: #ifndef _MISC_H
16: #define _MISC_H
1.58 guenther 17:
18: #include <sys/time.h>
1.62 djm 19: #include <sys/types.h>
1.78 djm 20: #include <sys/socket.h>
1.94 ! djm 21: #include <stdio.h>
1.31 djm 22:
1.54 millert 23: /* Data structure for representing a forwarding request. */
24: struct Forward {
25: char *listen_host; /* Host (address) to listen on. */
26: int listen_port; /* Port to forward. */
27: char *listen_path; /* Path to bind domain socket. */
28: char *connect_host; /* Host to connect. */
29: int connect_port; /* Port to connect on connect_host. */
30: char *connect_path; /* Path to connect domain socket. */
31: int allocated_port; /* Dynamically allocated listen port */
32: int handle; /* Handle for dynamic listen ports */
33: };
1.56 djm 34:
35: int forward_equals(const struct Forward *, const struct Forward *);
1.61 dtucker 36: int daemonized(void);
1.54 millert 37:
38: /* Common server and client forwarding options. */
39: struct ForwardOptions {
40: int gateway_ports; /* Allow remote connects to forwarded ports. */
41: mode_t streamlocal_bind_mask; /* umask for streamlocal binds */
42: int streamlocal_bind_unlink; /* unlink socket before bind */
43: };
44:
1.14 djm 45: /* misc.c */
46:
1.9 itojun 47: char *chop(char *);
1.80 djm 48: void skip_space(char **);
1.9 itojun 49: char *strdelim(char **);
1.73 djm 50: char *strdelimw(char **);
1.15 djm 51: int set_nonblock(int);
52: int unset_nonblock(int);
1.11 stevesk 53: void set_nodelay(int);
1.66 djm 54: int set_reuseaddr(int);
1.67 djm 55: char *get_rdomain(int);
1.66 djm 56: int set_rdomain(int, const char *);
1.90 djm 57: int get_sock_af(int);
58: void set_sock_tos(int, int);
1.78 djm 59: int waitrfd(int, int *);
60: int timeout_connect(int, const struct sockaddr *, socklen_t, int *);
1.10 markus 61: int a2port(const char *);
1.27 reyk 62: int a2tun(const char *, int *);
1.33 dtucker 63: char *put_host_port(const char *, u_short);
1.79 dtucker 64: char *hpdelim2(char **, char *);
1.21 djm 65: char *hpdelim(char **);
1.10 markus 66: char *cleanhostname(char *);
67: char *colon(char *);
1.64 millert 68: int parse_user_host_path(const char *, char **, char **, char **);
1.57 djm 69: int parse_user_host_port(const char *, char **, char **, int *);
1.64 millert 70: int parse_uri(const char *, const char *, char **, char **, int *, char **);
1.92 dtucker 71: int convtime(const char *);
1.85 djm 72: const char *fmt_timeframe(time_t t);
1.22 djm 73: char *tilde_expand_filename(const char *, uid_t);
1.86 dtucker 74:
1.87 dtucker 75: char *dollar_expand(int *, const char *string, ...);
1.25 dtucker 76: char *percent_expand(const char *, ...) __attribute__((__sentinel__));
1.86 dtucker 77: char *percent_dollar_expand(const char *, ...) __attribute__((__sentinel__));
1.31 djm 78: char *tohex(const void *, size_t);
1.84 djm 79: void xextendf(char **s, const char *sep, const char *fmt, ...)
80: __attribute__((__format__ (printf, 3, 4))) __attribute__((__nonnull__ (3)));
1.26 djm 81: void sanitise_stdfd(void);
1.38 dtucker 82: void ms_subtract_diff(struct timeval *, int *);
83: void ms_to_timeval(struct timeval *, int);
1.68 dtucker 84: void monotime_ts(struct timespec *);
85: void monotime_tv(struct timeval *);
1.49 dtucker 86: time_t monotime(void);
1.55 dtucker 87: double monotime_double(void);
1.50 djm 88: void lowercase(char *s);
1.54 millert 89: int unix_listener(const char *, int, int);
1.64 millert 90: int valid_domain(char *, int, const char **);
1.75 djm 91: int valid_env_name(const char *);
1.69 dtucker 92: const char *atoi_err(const char *, int *);
1.71 djm 93: int parse_absolute_time(const char *, uint64_t *);
94: void format_absolute_time(uint64_t, char *, size_t);
1.76 djm 95: int path_absolute(const char *);
1.88 djm 96: int stdfd_devnull(int, int, int);
1.1 markus 97:
1.10 markus 98: struct passwd *pwcopy(struct passwd *);
1.37 dtucker 99: const char *ssh_gai_strerror(int);
1.91 djm 100:
101: typedef void privdrop_fn(struct passwd *);
102: typedef void privrestore_fn(void);
103: #define SSH_SUBPROCESS_STDOUT_DISCARD (1) /* Discard stdout */
104: #define SSH_SUBPROCESS_STDOUT_CAPTURE (1<<1) /* Redirect stdout */
105: #define SSH_SUBPROCESS_STDERR_DISCARD (1<<2) /* Discard stderr */
106: #define SSH_SUBPROCESS_UNSAFE_PATH (1<<3) /* Don't check for safe cmd */
107: #define SSH_SUBPROCESS_PRESERVE_ENV (1<<4) /* Keep parent environment */
108: pid_t subprocess(const char *, const char *, int, char **, FILE **, u_int,
109: struct passwd *, privdrop_fn *, privrestore_fn *);
1.5 mouring 110:
1.6 mouring 111: typedef struct arglist arglist;
112: struct arglist {
1.12 markus 113: char **list;
1.17 avsm 114: u_int num;
115: u_int nalloc;
1.6 mouring 116: };
1.29 djm 117: void addargs(arglist *, char *, ...)
118: __attribute__((format(printf, 2, 3)));
119: void replacearg(arglist *, u_int, char *, ...)
120: __attribute__((format(printf, 3, 4)));
121: void freeargs(arglist *);
1.14 djm 122:
1.65 djm 123: int tun_open(int, int, char **);
1.28 reyk 124:
125: /* Common definitions for ssh tunnel device forwarding */
126: #define SSH_TUNMODE_NO 0x00
127: #define SSH_TUNMODE_POINTOPOINT 0x01
128: #define SSH_TUNMODE_ETHERNET 0x02
129: #define SSH_TUNMODE_DEFAULT SSH_TUNMODE_POINTOPOINT
130: #define SSH_TUNMODE_YES (SSH_TUNMODE_POINTOPOINT|SSH_TUNMODE_ETHERNET)
131:
132: #define SSH_TUNID_ANY 0x7fffffff
133: #define SSH_TUNID_ERR (SSH_TUNID_ANY - 1)
134: #define SSH_TUNID_MAX (SSH_TUNID_ANY - 2)
1.54 millert 135:
136: /* Fake port to indicate that host field is really a path. */
137: #define PORT_STREAMLOCAL -2
1.31 djm 138:
139: /* Functions to extract or store big-endian words of various sizes */
140: u_int64_t get_u64(const void *)
1.53 djm 141: __attribute__((__bounded__( __minbytes__, 1, 8)));
1.31 djm 142: u_int32_t get_u32(const void *)
1.53 djm 143: __attribute__((__bounded__( __minbytes__, 1, 4)));
1.31 djm 144: u_int16_t get_u16(const void *)
1.53 djm 145: __attribute__((__bounded__( __minbytes__, 1, 2)));
1.31 djm 146: void put_u64(void *, u_int64_t)
1.53 djm 147: __attribute__((__bounded__( __minbytes__, 1, 8)));
1.31 djm 148: void put_u32(void *, u_int32_t)
1.53 djm 149: __attribute__((__bounded__( __minbytes__, 1, 4)));
1.31 djm 150: void put_u16(void *, u_int16_t)
1.53 djm 151: __attribute__((__bounded__( __minbytes__, 1, 2)));
1.52 djm 152:
153: /* Little-endian store/load, used by umac.c */
154: u_int32_t get_u32_le(const void *)
1.53 djm 155: __attribute__((__bounded__(__minbytes__, 1, 4)));
1.52 djm 156: void put_u32_le(void *, u_int32_t)
1.53 djm 157: __attribute__((__bounded__(__minbytes__, 1, 4)));
1.44 djm 158:
159: struct bwlimit {
160: size_t buflen;
1.77 dtucker 161: u_int64_t rate; /* desired rate in kbit/s */
162: u_int64_t thresh; /* threshold after which we'll check timers */
163: u_int64_t lamt; /* amount written in last timer interval */
1.44 djm 164: struct timeval bwstart, bwend;
165: };
166:
167: void bandwidth_limit_init(struct bwlimit *, u_int64_t, size_t);
168: void bandwidth_limit(struct bwlimit *, size_t);
1.31 djm 169:
1.46 djm 170: int parse_ipqos(const char *);
1.48 stevesk 171: const char *iptos2str(int);
1.47 djm 172: void mktemp_proto(char *, size_t);
1.62 djm 173:
174: void child_set_env(char ***envp, u_int *envsizep, const char *name,
175: const char *value);
176:
177: int argv_split(const char *, int *, char ***);
178: char *argv_assemble(int, char **argv);
1.63 djm 179: int exited_cleanly(pid_t, const char *, const char *, int);
1.62 djm 180:
181: struct stat;
182: int safe_path(const char *, struct stat *, const char *, uid_t,
183: char *, size_t);
184: int safe_path_fd(int, const char *, struct passwd *,
185: char *err, size_t errlen);
1.81 djm 186:
187: /* authorized_key-style options parsing helpers */
188: int opt_flag(const char *opt, int allow_negate, const char **optsp);
189: char *opt_dequote(const char **sp, const char **errstrp);
190: int opt_match(const char **opts, const char *term);
1.36 djm 191:
1.93 markus 192: /* readconf/servconf option lists */
193: void opt_array_append(const char *file, const int line,
194: const char *directive, char ***array, u_int *lp, const char *s);
195: void opt_array_append2(const char *file, const int line,
196: const char *directive, char ***array, int **iarray, u_int *lp,
197: const char *s, int i);
198:
1.36 djm 199: /* readpass.c */
200:
201: #define RP_ECHO 0x0001
202: #define RP_ALLOW_STDIN 0x0002
203: #define RP_ALLOW_EOF 0x0004
204: #define RP_USE_ASKPASS 0x0008
205:
1.82 djm 206: struct notifier_ctx;
207:
1.36 djm 208: char *read_passphrase(const char *, int);
209: int ask_permission(const char *, ...) __attribute__((format(printf, 1, 2)));
1.82 djm 210: struct notifier_ctx *notify_start(int, const char *, ...)
211: __attribute__((format(printf, 2, 3)));
1.89 djm 212: void notify_complete(struct notifier_ctx *, const char *, ...)
213: __attribute__((format(printf, 2, 3)));
1.59 deraadt 214:
215: #define MINIMUM(a, b) (((a) < (b)) ? (a) : (b))
216: #define MAXIMUM(a, b) (((a) > (b)) ? (a) : (b))
217: #define ROUNDUP(x, y) ((((x)+((y)-1))/(y))*(y))
1.36 djm 218:
1.83 dtucker 219: typedef void (*sshsig_t)(int);
220: sshsig_t ssh_signal(int, sshsig_t);
1.93 markus 221:
1.31 djm 222: #endif /* _MISC_H */
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