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50a776da WJ |
1 | /* |
2 | * Copyright (c) 1987 Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | char copyright[] = | |
36 | "@(#) Copyright (c) 1987 Regents of the University of California.\n\ | |
37 | All rights reserved.\n"; | |
38 | #endif /* not lint */ | |
39 | ||
40 | #ifndef lint | |
41 | static char sccsid[] = "@(#)xinstall.c 5.24 (Berkeley) 7/1/90"; | |
42 | #endif /* not lint */ | |
43 | ||
44 | #include <sys/param.h> | |
45 | #include <sys/stat.h> | |
46 | #include <sys/file.h> | |
47 | #include <grp.h> | |
48 | #include <pwd.h> | |
49 | #include <stdio.h> | |
50 | #include <ctype.h> | |
51 | #include <paths.h> | |
52 | #include "pathnames.h" | |
53 | ||
54 | static struct passwd *pp; | |
55 | static struct group *gp; | |
56 | static int docopy, dostrip, mode = 0755; | |
57 | static char *group, *owner, pathbuf[MAXPATHLEN]; | |
58 | ||
59 | main(argc, argv) | |
60 | int argc; | |
61 | char **argv; | |
62 | { | |
63 | extern char *optarg; | |
64 | extern int optind; | |
65 | struct stat from_sb, to_sb; | |
66 | mode_t *set, *setmode(); | |
67 | int ch, no_target; | |
68 | char *to_name; | |
69 | ||
70 | while ((ch = getopt(argc, argv, "cg:m:o:s")) != EOF) | |
71 | switch((char)ch) { | |
72 | case 'c': | |
73 | docopy = 1; | |
74 | break; | |
75 | case 'g': | |
76 | group = optarg; | |
77 | break; | |
78 | case 'm': | |
79 | if (!(set = setmode(optarg))) { | |
80 | (void)fprintf(stderr, | |
81 | "install: invalid file mode.\n"); | |
82 | exit(1); | |
83 | } | |
84 | mode = getmode(set, 0); | |
85 | break; | |
86 | case 'o': | |
87 | owner = optarg; | |
88 | break; | |
89 | case 's': | |
90 | dostrip = 1; | |
91 | break; | |
92 | case '?': | |
93 | default: | |
94 | usage(); | |
95 | } | |
96 | argc -= optind; | |
97 | argv += optind; | |
98 | if (argc < 2) | |
99 | usage(); | |
100 | ||
101 | /* get group and owner id's */ | |
102 | if (group && !(gp = getgrnam(group))) { | |
103 | fprintf(stderr, "install: unknown group %s.\n", group); | |
104 | exit(1); | |
105 | } | |
106 | if (owner && !(pp = getpwnam(owner))) { | |
107 | fprintf(stderr, "install: unknown user %s.\n", owner); | |
108 | exit(1); | |
109 | } | |
110 | ||
111 | no_target = stat(to_name = argv[argc - 1], &to_sb); | |
112 | if (!no_target && (to_sb.st_mode & S_IFMT) == S_IFDIR) { | |
113 | for (; *argv != to_name; ++argv) | |
114 | install(*argv, to_name, 1); | |
115 | exit(0); | |
116 | } | |
117 | ||
118 | /* can't do file1 file2 directory/file */ | |
119 | if (argc != 2) | |
120 | usage(); | |
121 | ||
122 | if (!no_target) { | |
123 | if (stat(*argv, &from_sb)) { | |
124 | fprintf(stderr, "install: can't find %s.\n", *argv); | |
125 | exit(1); | |
126 | } | |
127 | if ((to_sb.st_mode & S_IFMT) != S_IFREG) { | |
128 | fprintf(stderr, "install: %s isn't a regular file.\n", to_name); | |
129 | exit(1); | |
130 | } | |
131 | if (to_sb.st_dev == from_sb.st_dev && to_sb.st_ino == from_sb.st_ino) { | |
132 | fprintf(stderr, "install: %s and %s are the same file.\n", *argv, to_name); | |
133 | exit(1); | |
134 | } | |
135 | /* unlink now... avoid ETXTBSY errors later */ | |
136 | (void)unlink(to_name); | |
137 | } | |
138 | install(*argv, to_name, 0); | |
139 | exit(0); | |
140 | } | |
141 | ||
142 | /* | |
143 | * install -- | |
144 | * build a path name and install the file | |
145 | */ | |
146 | install(from_name, to_name, isdir) | |
147 | char *from_name, *to_name; | |
148 | int isdir; | |
149 | { | |
150 | struct stat from_sb; | |
151 | int devnull, from_fd, to_fd; | |
152 | char *C, *rindex(); | |
153 | ||
154 | /* if try to install NULL file to a directory, fails */ | |
155 | if (isdir || strcmp(from_name, _PATH_DEVNULL)) { | |
156 | if (stat(from_name, &from_sb)) { | |
157 | fprintf(stderr, "install: can't find %s.\n", from_name); | |
158 | exit(1); | |
159 | } | |
160 | if ((from_sb.st_mode & S_IFMT) != S_IFREG) { | |
161 | fprintf(stderr, "install: %s isn't a regular file.\n", from_name); | |
162 | exit(1); | |
163 | } | |
164 | /* build the target path */ | |
165 | if (isdir) { | |
166 | (void)sprintf(pathbuf, "%s/%s", to_name, (C = rindex(from_name, '/')) ? ++C : from_name); | |
167 | to_name = pathbuf; | |
168 | } | |
169 | devnull = 0; | |
170 | } else | |
171 | devnull = 1; | |
172 | ||
173 | /* unlink now... avoid ETXTBSY errors later */ | |
174 | (void)unlink(to_name); | |
175 | ||
176 | /* create target */ | |
177 | if ((to_fd = open(to_name, O_CREAT|O_WRONLY|O_TRUNC, 0600)) < 0) { | |
178 | error(to_name); | |
179 | exit(1); | |
180 | } | |
181 | if (!devnull) { | |
182 | if ((from_fd = open(from_name, O_RDONLY, 0)) < 0) { | |
183 | (void)unlink(to_name); | |
184 | error(from_name); | |
185 | exit(1); | |
186 | } | |
187 | copy(from_fd, from_name, to_fd, to_name); | |
188 | (void)close(from_fd); | |
189 | } | |
190 | if (dostrip) | |
191 | strip(to_name); | |
192 | /* | |
193 | * set owner, group, mode for target; do the chown first, | |
194 | * chown may lose the setuid bits. | |
195 | */ | |
196 | if ((group || owner) && | |
197 | fchown(to_fd, owner ? pp->pw_uid : -1, group ? gp->gr_gid : -1) || | |
198 | fchmod(to_fd, mode)) { | |
199 | error(to_name); | |
200 | bad(to_name); | |
201 | } | |
202 | (void)close(to_fd); | |
203 | if (!docopy && !devnull && unlink(from_name)) { | |
204 | error(from_name); | |
205 | exit(1); | |
206 | } | |
207 | } | |
208 | ||
209 | /* | |
210 | * copy -- | |
211 | * copy from one file to another | |
212 | */ | |
213 | copy(from_fd, from_name, to_fd, to_name) | |
214 | register int from_fd, to_fd; | |
215 | char *from_name, *to_name; | |
216 | { | |
217 | register int n; | |
218 | char buf[MAXBSIZE]; | |
219 | ||
220 | while ((n = read(from_fd, buf, sizeof(buf))) > 0) | |
221 | if (write(to_fd, buf, n) != n) { | |
222 | error(to_name); | |
223 | bad(to_name); | |
224 | } | |
225 | if (n == -1) { | |
226 | error(from_name); | |
227 | bad(to_name); | |
228 | } | |
229 | } | |
230 | ||
231 | /* | |
232 | * strip -- | |
233 | * use strip(1) to strip the target file | |
234 | */ | |
235 | strip(to_name) | |
236 | char *to_name; | |
237 | { | |
238 | int status; | |
239 | ||
240 | switch (vfork()) { | |
241 | case -1: | |
242 | error("fork"); | |
243 | bad(to_name); | |
244 | case 0: | |
245 | execl(_PATH_STRIP, "strip", to_name, (char *)NULL); | |
246 | error(_PATH_STRIP); | |
247 | _exit(1); | |
248 | default: | |
249 | if (wait(&status) == -1 || status) | |
250 | bad(to_name); | |
251 | } | |
252 | } | |
253 | ||
254 | /* | |
255 | * error -- | |
256 | * print out an error message | |
257 | */ | |
258 | error(s) | |
259 | char *s; | |
260 | { | |
261 | extern int errno; | |
262 | char *strerror(); | |
263 | ||
264 | (void)fprintf(stderr, "install: %s: %s\n", s, strerror(errno)); | |
265 | } | |
266 | ||
267 | /* | |
268 | * bad -- | |
269 | * remove created target and die | |
270 | */ | |
271 | bad(fname) | |
272 | char *fname; | |
273 | { | |
274 | (void)unlink(fname); | |
275 | exit(1); | |
276 | } | |
277 | ||
278 | /* | |
279 | * usage -- | |
280 | * print a usage message and die | |
281 | */ | |
282 | usage() | |
283 | { | |
284 | (void)fprintf(stderr, | |
285 | "usage: install [-cs] [-g group] [-m mode] [-o owner] file1 file2;\n\tor file1 ... fileN directory\n"); | |
286 | exit(1); | |
287 | } |