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3c0ef626 | 1 | /* |
0fff78ff | 2 | * Copyright (c) 1999-2003 Damien Miller. All rights reserved. |
3c0ef626 | 3 | * |
4 | * Redistribution and use in source and binary forms, with or without | |
5 | * modification, are permitted provided that the following conditions | |
6 | * are met: | |
7 | * 1. Redistributions of source code must retain the above copyright | |
8 | * notice, this list of conditions and the following disclaimer. | |
9 | * 2. Redistributions in binary form must reproduce the above copyright | |
10 | * notice, this list of conditions and the following disclaimer in the | |
11 | * documentation and/or other materials provided with the distribution. | |
12 | * | |
13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
15 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
16 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
19 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
20 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
23 | */ | |
24 | ||
25 | #include "includes.h" | |
6a9b3198 | 26 | #include "xmalloc.h" |
3c0ef626 | 27 | |
28 | RCSID("$Id$"); | |
29 | ||
6a9b3198 | 30 | /* |
31 | * NB. duplicate __progname in case it is an alias for argv[0] | |
32 | * Otherwise it may get clobbered by setproctitle() | |
33 | */ | |
0fff78ff | 34 | char *ssh_get_progname(char *argv0) |
3c0ef626 | 35 | { |
36 | #ifdef HAVE___PROGNAME | |
37 | extern char *__progname; | |
38 | ||
6a9b3198 | 39 | return xstrdup(__progname); |
3c0ef626 | 40 | #else |
41 | char *p; | |
42 | ||
43 | if (argv0 == NULL) | |
0fff78ff | 44 | return ("unknown"); /* XXX */ |
3c0ef626 | 45 | p = strrchr(argv0, '/'); |
46 | if (p == NULL) | |
47 | p = argv0; | |
48 | else | |
49 | p++; | |
6a9b3198 | 50 | |
0fff78ff | 51 | return (xstrdup(p)); |
3c0ef626 | 52 | #endif |
53 | } | |
54 | ||
55 | #ifndef HAVE_SETLOGIN | |
56 | int setlogin(const char *name) | |
57 | { | |
0fff78ff | 58 | return (0); |
3c0ef626 | 59 | } |
60 | #endif /* !HAVE_SETLOGIN */ | |
61 | ||
62 | #ifndef HAVE_INNETGR | |
63 | int innetgr(const char *netgroup, const char *host, | |
64 | const char *user, const char *domain) | |
65 | { | |
0fff78ff | 66 | return (0); |
3c0ef626 | 67 | } |
68 | #endif /* HAVE_INNETGR */ | |
69 | ||
70 | #if !defined(HAVE_SETEUID) && defined(HAVE_SETREUID) | |
71 | int seteuid(uid_t euid) | |
72 | { | |
0fff78ff | 73 | return (setreuid(-1, euid)); |
3c0ef626 | 74 | } |
75 | #endif /* !defined(HAVE_SETEUID) && defined(HAVE_SETREUID) */ | |
76 | ||
77 | #if !defined(HAVE_SETEGID) && defined(HAVE_SETRESGID) | |
78 | int setegid(uid_t egid) | |
79 | { | |
0fff78ff | 80 | return(setresgid(-1, egid, -1)); |
3c0ef626 | 81 | } |
82 | #endif /* !defined(HAVE_SETEGID) && defined(HAVE_SETRESGID) */ | |
83 | ||
84 | #if !defined(HAVE_STRERROR) && defined(HAVE_SYS_ERRLIST) && defined(HAVE_SYS_NERR) | |
85 | const char *strerror(int e) | |
86 | { | |
87 | extern int sys_nerr; | |
88 | extern char *sys_errlist[]; | |
89 | ||
90 | if ((e >= 0) && (e < sys_nerr)) | |
0fff78ff | 91 | return (sys_errlist[e]); |
92 | ||
93 | return ("unlisted error"); | |
3c0ef626 | 94 | } |
95 | #endif | |
96 | ||
97 | #ifndef HAVE_UTIMES | |
98 | int utimes(char *filename, struct timeval *tvp) | |
99 | { | |
100 | struct utimbuf ub; | |
101 | ||
41b2f314 | 102 | ub.actime = tvp[0].tv_sec; |
103 | ub.modtime = tvp[1].tv_sec; | |
3c0ef626 | 104 | |
0fff78ff | 105 | return (utime(filename, &ub)); |
3c0ef626 | 106 | } |
107 | #endif | |
700318f3 | 108 | |
109 | #ifndef HAVE_TRUNCATE | |
0fff78ff | 110 | int truncate(const char *path, off_t length) |
700318f3 | 111 | { |
112 | int fd, ret, saverrno; | |
113 | ||
114 | fd = open(path, O_WRONLY); | |
115 | if (fd < 0) | |
0fff78ff | 116 | return (-1); |
700318f3 | 117 | |
118 | ret = ftruncate(fd, length); | |
119 | saverrno = errno; | |
0fff78ff | 120 | close(fd); |
700318f3 | 121 | if (ret == -1) |
122 | errno = saverrno; | |
0fff78ff | 123 | |
700318f3 | 124 | return(ret); |
125 | } | |
126 | #endif /* HAVE_TRUNCATE */ | |
127 | ||
f5799ae1 | 128 | #if !defined(HAVE_SETGROUPS) && defined(SETGROUPS_NOOP) |
129 | /* | |
130 | * Cygwin setgroups should be a noop. | |
131 | */ | |
132 | int | |
133 | setgroups(size_t size, const gid_t *list) | |
134 | { | |
0fff78ff | 135 | return (0); |
f5799ae1 | 136 | } |
137 | #endif | |
138 | ||
6a9b3198 | 139 | #if !defined(HAVE_NANOSLEEP) && !defined(HAVE_NSLEEP) |
140 | int nanosleep(const struct timespec *req, struct timespec *rem) | |
141 | { | |
142 | int rc, saverrno; | |
143 | extern int errno; | |
144 | struct timeval tstart, tstop, tremain, time2wait; | |
145 | ||
146 | TIMESPEC_TO_TIMEVAL(&time2wait, req) | |
147 | (void) gettimeofday(&tstart, NULL); | |
148 | rc = select(0, NULL, NULL, NULL, &time2wait); | |
149 | if (rc == -1) { | |
150 | saverrno = errno; | |
151 | (void) gettimeofday (&tstop, NULL); | |
152 | errno = saverrno; | |
153 | tremain.tv_sec = time2wait.tv_sec - | |
154 | (tstop.tv_sec - tstart.tv_sec); | |
155 | tremain.tv_usec = time2wait.tv_usec - | |
156 | (tstop.tv_usec - tstart.tv_usec); | |
157 | tremain.tv_sec += tremain.tv_usec / 1000000L; | |
158 | tremain.tv_usec %= 1000000L; | |
159 | } else { | |
160 | tremain.tv_sec = 0; | |
161 | tremain.tv_usec = 0; | |
162 | } | |
163 | TIMEVAL_TO_TIMESPEC(&tremain, rem) | |
164 | ||
165 | return(rc); | |
166 | } | |
9cb1827b | 167 | |
6a9b3198 | 168 | #endif |
169 | ||
0fff78ff | 170 | #ifndef HAVE_TCGETPGRP |
171 | pid_t | |
172 | tcgetpgrp(int fd) | |
173 | { | |
174 | int ctty_pgrp; | |
175 | ||
176 | if (ioctl(fd, TIOCGPGRP, &ctty_pgrp) == -1) | |
177 | return(-1); | |
178 | else | |
179 | return(ctty_pgrp); | |
180 | } | |
181 | #endif /* HAVE_TCGETPGRP */ | |
182 | ||
183 | #ifndef HAVE_TCSENDBREAK | |
184 | int | |
185 | tcsendbreak(int fd, int duration) | |
186 | { | |
187 | # if defined(TIOCSBRK) && defined(TIOCCBRK) | |
188 | struct timeval sleepytime; | |
189 | ||
190 | sleepytime.tv_sec = 0; | |
191 | sleepytime.tv_usec = 400000; | |
192 | if (ioctl(fd, TIOCSBRK, 0) == -1) | |
193 | return (-1); | |
194 | (void)select(0, 0, 0, 0, &sleepytime); | |
195 | if (ioctl(fd, TIOCCBRK, 0) == -1) | |
196 | return (-1); | |
197 | return (0); | |
198 | # else | |
199 | return -1; | |
200 | # endif | |
201 | } | |
202 | #endif /* HAVE_TCSENDBREAK */ | |
203 | ||
204 | mysig_t | |
205 | mysignal(int sig, mysig_t act) | |
206 | { | |
207 | #ifdef HAVE_SIGACTION | |
208 | struct sigaction sa, osa; | |
209 | ||
210 | if (sigaction(sig, NULL, &osa) == -1) | |
211 | return (mysig_t) -1; | |
212 | if (osa.sa_handler != act) { | |
213 | memset(&sa, 0, sizeof(sa)); | |
214 | sigemptyset(&sa.sa_mask); | |
215 | sa.sa_flags = 0; | |
216 | #ifdef SA_INTERRUPT | |
217 | if (sig == SIGALRM) | |
218 | sa.sa_flags |= SA_INTERRUPT; | |
219 | #endif | |
220 | sa.sa_handler = act; | |
221 | if (sigaction(sig, &sa, NULL) == -1) | |
222 | return (mysig_t) -1; | |
223 | } | |
224 | return (osa.sa_handler); | |
225 | #else | |
226 | return (signal(sig, act)); | |
227 | #endif | |
228 | } |