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419e26e7 | 1 | |
8efc0c15 | 2 | /* |
9cd11896 | 3 | * Copyright (c) 1999-2004 Damien Miller <djm@mindrot.org> |
bfc9a610 | 4 | * |
9cd11896 | 5 | * Permission to use, copy, modify, and distribute this software for any |
6 | * purpose with or without fee is hereby granted, provided that the above | |
7 | * copyright notice and this permission notice appear in all copies. | |
bfc9a610 | 8 | * |
9cd11896 | 9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
bfc9a610 | 16 | */ |
8efc0c15 | 17 | |
416ed5a7 | 18 | #include "includes.h" |
b5b88c19 | 19 | |
65737b47 | 20 | #include <sys/types.h> |
ab26f490 | 21 | #ifdef HAVE_SYS_SELECT_H |
22 | # include <sys/select.h> | |
23 | #endif | |
8151aaa5 | 24 | #ifdef HAVE_SYS_TIME_H |
25 | # include <sys/time.h> | |
26 | #endif | |
27 | ||
28cb0a43 | 28 | #include <string.h> |
b5b88c19 | 29 | #include <signal.h> |
8151aaa5 | 30 | #include <stdlib.h> |
65737b47 | 31 | #include <unistd.h> |
b5b88c19 | 32 | |
d0104542 | 33 | #include "xmalloc.h" |
8efc0c15 | 34 | |
3cc5d223 | 35 | #ifndef HAVE___PROGNAME |
35cf0057 | 36 | char *__progname; |
37 | #endif | |
38 | ||
d0104542 | 39 | /* |
40 | * NB. duplicate __progname in case it is an alias for argv[0] | |
41 | * Otherwise it may get clobbered by setproctitle() | |
42 | */ | |
fda04d7d | 43 | char *ssh_get_progname(char *argv0) |
260d427b | 44 | { |
45 | #ifdef HAVE___PROGNAME | |
46 | extern char *__progname; | |
47 | ||
d0104542 | 48 | return xstrdup(__progname); |
260d427b | 49 | #else |
50 | char *p; | |
51 | ||
52 | if (argv0 == NULL) | |
9901cb37 | 53 | return ("unknown"); /* XXX */ |
260d427b | 54 | p = strrchr(argv0, '/'); |
55 | if (p == NULL) | |
56 | p = argv0; | |
57 | else | |
58 | p++; | |
d0104542 | 59 | |
9901cb37 | 60 | return (xstrdup(p)); |
260d427b | 61 | #endif |
62 | } | |
63 | ||
a5c9cd31 | 64 | #ifndef HAVE_SETLOGIN |
65 | int setlogin(const char *name) | |
66 | { | |
9901cb37 | 67 | return (0); |
a5c9cd31 | 68 | } |
69 | #endif /* !HAVE_SETLOGIN */ | |
70 | ||
71 | #ifndef HAVE_INNETGR | |
72 | int innetgr(const char *netgroup, const char *host, | |
73 | const char *user, const char *domain) | |
74 | { | |
9901cb37 | 75 | return (0); |
a5c9cd31 | 76 | } |
77 | #endif /* HAVE_INNETGR */ | |
78 | ||
79 | #if !defined(HAVE_SETEUID) && defined(HAVE_SETREUID) | |
80 | int seteuid(uid_t euid) | |
81 | { | |
9901cb37 | 82 | return (setreuid(-1, euid)); |
a5c9cd31 | 83 | } |
84 | #endif /* !defined(HAVE_SETEUID) && defined(HAVE_SETREUID) */ | |
819b676f | 85 | |
febd3f8e | 86 | #if !defined(HAVE_SETEGID) && defined(HAVE_SETRESGID) |
87 | int setegid(uid_t egid) | |
88 | { | |
9901cb37 | 89 | return(setresgid(-1, egid, -1)); |
febd3f8e | 90 | } |
91 | #endif /* !defined(HAVE_SETEGID) && defined(HAVE_SETRESGID) */ | |
92 | ||
416ed5a7 | 93 | #if !defined(HAVE_STRERROR) && defined(HAVE_SYS_ERRLIST) && defined(HAVE_SYS_NERR) |
94 | const char *strerror(int e) | |
819b676f | 95 | { |
416ed5a7 | 96 | extern int sys_nerr; |
97 | extern char *sys_errlist[]; | |
98 | ||
e2bccbcd | 99 | if ((e >= 0) && (e < sys_nerr)) |
9901cb37 | 100 | return (sys_errlist[e]); |
101 | ||
102 | return ("unlisted error"); | |
819b676f | 103 | } |
416ed5a7 | 104 | #endif |
89c7e31c | 105 | |
106 | #ifndef HAVE_UTIMES | |
107 | int utimes(char *filename, struct timeval *tvp) | |
108 | { | |
109 | struct utimbuf ub; | |
110 | ||
6c266dc3 | 111 | ub.actime = tvp[0].tv_sec; |
112 | ub.modtime = tvp[1].tv_sec; | |
89c7e31c | 113 | |
9901cb37 | 114 | return (utime(filename, &ub)); |
89c7e31c | 115 | } |
116 | #endif | |
f25cd32c | 117 | |
118 | #ifndef HAVE_TRUNCATE | |
9901cb37 | 119 | int truncate(const char *path, off_t length) |
f25cd32c | 120 | { |
121 | int fd, ret, saverrno; | |
122 | ||
123 | fd = open(path, O_WRONLY); | |
124 | if (fd < 0) | |
9901cb37 | 125 | return (-1); |
f25cd32c | 126 | |
127 | ret = ftruncate(fd, length); | |
128 | saverrno = errno; | |
9901cb37 | 129 | close(fd); |
f25cd32c | 130 | if (ret == -1) |
131 | errno = saverrno; | |
9901cb37 | 132 | |
f25cd32c | 133 | return(ret); |
134 | } | |
135 | #endif /* HAVE_TRUNCATE */ | |
136 | ||
5271b55c | 137 | #if !defined(HAVE_NANOSLEEP) && !defined(HAVE_NSLEEP) |
138 | int nanosleep(const struct timespec *req, struct timespec *rem) | |
139 | { | |
140 | int rc, saverrno; | |
141 | extern int errno; | |
142 | struct timeval tstart, tstop, tremain, time2wait; | |
143 | ||
144 | TIMESPEC_TO_TIMEVAL(&time2wait, req) | |
145 | (void) gettimeofday(&tstart, NULL); | |
146 | rc = select(0, NULL, NULL, NULL, &time2wait); | |
147 | if (rc == -1) { | |
148 | saverrno = errno; | |
149 | (void) gettimeofday (&tstop, NULL); | |
150 | errno = saverrno; | |
151 | tremain.tv_sec = time2wait.tv_sec - | |
152 | (tstop.tv_sec - tstart.tv_sec); | |
153 | tremain.tv_usec = time2wait.tv_usec - | |
154 | (tstop.tv_usec - tstart.tv_usec); | |
155 | tremain.tv_sec += tremain.tv_usec / 1000000L; | |
156 | tremain.tv_usec %= 1000000L; | |
157 | } else { | |
158 | tremain.tv_sec = 0; | |
159 | tremain.tv_usec = 0; | |
160 | } | |
aee0a82f | 161 | if (rem != NULL) |
162 | TIMEVAL_TO_TIMESPEC(&tremain, rem) | |
5271b55c | 163 | |
164 | return(rc); | |
165 | } | |
5271b55c | 166 | #endif |
167 | ||
c5d3dd1b | 168 | #ifndef HAVE_TCGETPGRP |
169 | pid_t | |
170 | tcgetpgrp(int fd) | |
171 | { | |
0644eab4 | 172 | int ctty_pgrp; |
c5d3dd1b | 173 | |
f29c37a9 | 174 | if (ioctl(fd, TIOCGPGRP, &ctty_pgrp) == -1) |
c5d3dd1b | 175 | return(-1); |
176 | else | |
177 | return(ctty_pgrp); | |
178 | } | |
179 | #endif /* HAVE_TCGETPGRP */ | |
180 | ||
5af25b1d | 181 | #ifndef HAVE_TCSENDBREAK |
182 | int | |
183 | tcsendbreak(int fd, int duration) | |
184 | { | |
185 | # if defined(TIOCSBRK) && defined(TIOCCBRK) | |
186 | struct timeval sleepytime; | |
187 | ||
188 | sleepytime.tv_sec = 0; | |
189 | sleepytime.tv_usec = 400000; | |
190 | if (ioctl(fd, TIOCSBRK, 0) == -1) | |
191 | return (-1); | |
192 | (void)select(0, 0, 0, 0, &sleepytime); | |
193 | if (ioctl(fd, TIOCCBRK, 0) == -1) | |
194 | return (-1); | |
195 | return (0); | |
196 | # else | |
197 | return -1; | |
198 | # endif | |
199 | } | |
200 | #endif /* HAVE_TCSENDBREAK */ | |
f00d1f78 | 201 | |
202 | mysig_t | |
203 | mysignal(int sig, mysig_t act) | |
204 | { | |
205 | #ifdef HAVE_SIGACTION | |
206 | struct sigaction sa, osa; | |
207 | ||
208 | if (sigaction(sig, NULL, &osa) == -1) | |
209 | return (mysig_t) -1; | |
210 | if (osa.sa_handler != act) { | |
211 | memset(&sa, 0, sizeof(sa)); | |
212 | sigemptyset(&sa.sa_mask); | |
213 | sa.sa_flags = 0; | |
214 | #ifdef SA_INTERRUPT | |
215 | if (sig == SIGALRM) | |
216 | sa.sa_flags |= SA_INTERRUPT; | |
217 | #endif | |
218 | sa.sa_handler = act; | |
219 | if (sigaction(sig, &sa, NULL) == -1) | |
220 | return (mysig_t) -1; | |
221 | } | |
222 | return (osa.sa_handler); | |
223 | #else | |
cc1102cb | 224 | #undef signal |
f00d1f78 | 225 | return (signal(sig, act)); |
226 | #endif | |
227 | } | |
35fc74ed | 228 | |
229 | #ifndef HAVE_STRDUP | |
230 | char * | |
231 | strdup(const char *str) | |
232 | { | |
233 | size_t len; | |
234 | char *cp; | |
235 | ||
236 | len = strlen(str) + 1; | |
237 | cp = malloc(len); | |
238 | if (cp != NULL) | |
bd2a0801 | 239 | return(memcpy(cp, str, len)); |
240 | return NULL; | |
35fc74ed | 241 | } |
242 | #endif |