pw.c (7493058fb6d966132992e03c64a5b5f6fcbb38eb) pw.c (d2d022b9fdebd6bfe2983bb688818ed8bfc422a6)
1/*-
2 * Copyright (C) 1996
3 * David L. Nugent. 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

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32#include <err.h>
33#include <fcntl.h>
34#include <locale.h>
35#include <paths.h>
36#include <stdbool.h>
37#include <sys/wait.h>
38#include "pw.h"
39
1/*-
2 * Copyright (C) 1996
3 * David L. Nugent. 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

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32#include <err.h>
33#include <fcntl.h>
34#include <locale.h>
35#include <paths.h>
36#include <stdbool.h>
37#include <sys/wait.h>
38#include "pw.h"
39
40#if !defined(_PATH_YP)
41#define _PATH_YP "/var/yp/"
42#endif
43const char *Modes[] = {
44 "add", "del", "mod", "show", "next",
45 NULL};
46const char *Which[] = {"user", "group", NULL};
47static const char *Combo1[] = {
48 "useradd", "userdel", "usermod", "usershow", "usernext",
49 "lock", "unlock",
50 "groupadd", "groupdel", "groupmod", "groupshow", "groupnext",

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80 vgetpwnam,
81 vsetgrent,
82 vendgrent,
83 vgetgrent,
84 vgetgrgid,
85 vgetgrnam,
86};
87
40const char *Modes[] = {
41 "add", "del", "mod", "show", "next",
42 NULL};
43const char *Which[] = {"user", "group", NULL};
44static const char *Combo1[] = {
45 "useradd", "userdel", "usermod", "usershow", "usernext",
46 "lock", "unlock",
47 "groupadd", "groupdel", "groupmod", "groupshow", "groupnext",

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77 vgetpwnam,
78 vsetgrent,
79 vendgrent,
80 vgetgrent,
81 vgetgrgid,
82 vgetgrnam,
83};
84
85static int (*cmdfunc[W_NUM][M_NUM])(int argc, char **argv, char *_name) = {
86 { /* user */
87 pw_user_add,
88 pw_user_del,
89 pw_user_mod,
90 pw_user_show,
91 pw_user_next,
92 pw_user_lock,
93 pw_user_unlock,
94 },
95 { /* group */
96 pw_group_add,
97 pw_group_del,
98 pw_group_mod,
99 pw_group_show,
100 pw_group_next,
101 }
102};
103
88struct pwconf conf;
89
104struct pwconf conf;
105
90static struct cargs arglist;
106static int getindex(const char *words[], const char *word);
107static void cmdhelp(int mode, int which);
91
108
92static int getindex(const char *words[], const char *word);
93static void cmdhelp(int mode, int which);
94
95
96int
97main(int argc, char *argv[])
98{
109int
110main(int argc, char *argv[])
111{
99 int ch;
100 int mode = -1;
101 int which = -1;
102 long id = -1;
103 char *config = NULL;
112 int mode = -1, which = -1, tmp;
104 struct stat st;
113 struct stat st;
105 const char *errstr;
106 char arg, *name;
114 char arg, *arg1;
107 bool relocated, nis;
108
115 bool relocated, nis;
116
109 static const char *opts[W_NUM][M_NUM] =
110 {
111 { /* user */
112 "R:V:C:qn:u:c:d:e:p:g:G:mM:k:s:oL:i:w:h:H:Db:NPy:Y",
113 "R:V:C:qn:u:rY",
114 "R:V:C:qn:u:c:d:e:p:g:G:mM:l:k:s:w:L:h:H:FNPY",
115 "R:V:C:qn:u:FPa7",
116 "R:V:C:q",
117 "R:V:C:q",
118 "R:V:C:q"
119 },
120 { /* grp */
121 "R:V:C:qn:g:h:H:M:opNPY",
122 "R:V:C:qn:g:Y",
123 "R:V:C:qn:d:g:l:h:H:FM:m:NPY",
124 "R:V:C:qn:g:FPa",
125 "R:V:C:q"
126 }
127 };
128
129 static int (*funcs[W_NUM]) (int _mode, char *_name, long _id,
130 struct cargs * _args) =
131 { /* Request handlers */
132 pw_user,
133 pw_group
134 };
135
136 name = NULL;
117 arg1 = NULL;
137 relocated = nis = false;
138 memset(&conf, 0, sizeof(conf));
139 strlcpy(conf.rootdir, "/", sizeof(conf.rootdir));
140 strlcpy(conf.etcpath, _PATH_PWD, sizeof(conf.etcpath));
141 conf.fd = -1;
142 conf.checkduplicate = true;
143
118 relocated = nis = false;
119 memset(&conf, 0, sizeof(conf));
120 strlcpy(conf.rootdir, "/", sizeof(conf.rootdir));
121 strlcpy(conf.etcpath, _PATH_PWD, sizeof(conf.etcpath));
122 conf.fd = -1;
123 conf.checkduplicate = true;
124
144 LIST_INIT(&arglist);
125 setlocale(LC_ALL, "");
145
126
146 (void)setlocale(LC_ALL, "");
147
148 /*
149 * Break off the first couple of words to determine what exactly
150 * we're being asked to do
151 */
152 while (argc > 1) {
127 /*
128 * Break off the first couple of words to determine what exactly
129 * we're being asked to do
130 */
131 while (argc > 1) {
153 int tmp;
154
155 if (*argv[1] == '-') {
156 /*
157 * Special case, allow pw -V<dir> <operation> [args] for scripts etc.
158 */
159 arg = argv[1][1];
160 if (arg == 'V' || arg == 'R') {
161 if (relocated)
162 errx(EXIT_FAILURE, "Both '-R' and '-V' "

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192 which = tmp;
193 else if ((mode == -1 && which == -1) &&
194 ((tmp = getindex(Combo1, argv[1])) != -1 ||
195 (tmp = getindex(Combo2, argv[1])) != -1)) {
196 which = tmp / M_NUM;
197 mode = tmp % M_NUM;
198 } else if (strcmp(argv[1], "help") == 0 && argv[2] == NULL)
199 cmdhelp(mode, which);
132 if (*argv[1] == '-') {
133 /*
134 * Special case, allow pw -V<dir> <operation> [args] for scripts etc.
135 */
136 arg = argv[1][1];
137 if (arg == 'V' || arg == 'R') {
138 if (relocated)
139 errx(EXIT_FAILURE, "Both '-R' and '-V' "

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169 which = tmp;
170 else if ((mode == -1 && which == -1) &&
171 ((tmp = getindex(Combo1, argv[1])) != -1 ||
172 (tmp = getindex(Combo2, argv[1])) != -1)) {
173 which = tmp / M_NUM;
174 mode = tmp % M_NUM;
175 } else if (strcmp(argv[1], "help") == 0 && argv[2] == NULL)
176 cmdhelp(mode, which);
200 else if (which != -1 && mode != -1) {
201 if (strspn(argv[1], "0123456789") == strlen(argv[1])) {
202 id = strtounum(argv[1], 0, UID_MAX, &errstr);
203 if (errstr != NULL)
204 errx(EX_USAGE, "Bad id '%s': %s",
205 argv[1], errstr);
206 } else
207 name = argv[1];
208 } else
177 else if (which != -1 && mode != -1)
178 arg1 = argv[1];
179 else
209 errx(EX_USAGE, "unknown keyword `%s'", argv[1]);
210 ++argv;
211 --argc;
212 }
213
214 /*
215 * Bail out unless the user is specific!
216 */
217 if (mode == -1 || which == -1)
218 cmdhelp(mode, which);
219
220 conf.rootfd = open(conf.rootdir, O_DIRECTORY|O_CLOEXEC);
221 if (conf.rootfd == -1)
222 errx(EXIT_FAILURE, "Unable to open '%s'", conf.rootdir);
180 errx(EX_USAGE, "unknown keyword `%s'", argv[1]);
181 ++argv;
182 --argc;
183 }
184
185 /*
186 * Bail out unless the user is specific!
187 */
188 if (mode == -1 || which == -1)
189 cmdhelp(mode, which);
190
191 conf.rootfd = open(conf.rootdir, O_DIRECTORY|O_CLOEXEC);
192 if (conf.rootfd == -1)
193 errx(EXIT_FAILURE, "Unable to open '%s'", conf.rootdir);
223 conf.which = which;
224 /*
225 * We know which mode we're in and what we're about to do, so now
226 * let's dispatch the remaining command line args in a genric way.
227 */
228 optarg = NULL;
229
194
230 while ((ch = getopt(argc, argv, opts[which][mode])) != -1) {
231 switch (ch) {
232 case '?':
233 errx(EX_USAGE, "unknown switch");
234 break;
235 case '7':
236 conf.v7 = true;
237 break;
238 case 'C':
239 conf.config = optarg;
240 config = conf.config;
241 break;
242 case 'F':
243 conf.force = true;
244 break;
245 case 'N':
246 conf.dryrun = true;
247 break;
248 case 'l':
249 if (strlen(optarg) >= MAXLOGNAME)
250 errx(EX_USAGE, "new name too long: %s", optarg);
251 conf.newname = optarg;
252 break;
253 case 'P':
254 conf.pretty = true;
255 break;
256 case 'Y':
257 nis = true;
258 break;
259 case 'a':
260 conf.all = true;
261 break;
262 case 'c':
263 conf.gecos = pw_checkname(optarg, 1);
264 break;
265 case 'g':
266 if (which == 0) { /* for user* */
267 addarg(&arglist, 'g', optarg);
268 break;
269 }
270 if (strspn(optarg, "0123456789") != strlen(optarg))
271 errx(EX_USAGE, "-g expects a number");
272 id = strtounum(optarg, 0, GID_MAX, &errstr);
273 if (errstr != NULL)
274 errx(EX_USAGE, "Bad id '%s': %s", optarg,
275 errstr);
276 break;
277 case 'u':
278 if (strspn(optarg, "0123456789,") != strlen(optarg))
279 errx(EX_USAGE, "-u expects a number");
280 if (strchr(optarg, ',') != NULL) {
281 addarg(&arglist, 'u', optarg);
282 break;
283 }
284 id = strtounum(optarg, 0, UID_MAX, &errstr);
285 if (errstr != NULL)
286 errx(EX_USAGE, "Bad id '%s': %s", optarg,
287 errstr);
288 break;
289 case 'n':
290 name = optarg;
291 break;
292 case 'H':
293 if (conf.fd != -1)
294 errx(EX_USAGE, "'-h' and '-H' are mutually "
295 "exclusive options");
296 conf.precrypted = true;
297 if (strspn(optarg, "0123456789") != strlen(optarg))
298 errx(EX_USAGE, "'-H' expects a file descriptor");
299
300 conf.fd = strtonum(optarg, 0, INT_MAX, &errstr);
301 if (errstr != NULL)
302 errx(EX_USAGE, "Bad file descriptor '%s': %s",
303 optarg, errstr);
304 break;
305 case 'h':
306 if (conf.fd != -1)
307 errx(EX_USAGE, "'-h' and '-H' are mutually "
308 "exclusive options");
309
310 if (strcmp(optarg, "-") == 0)
311 conf.fd = '-';
312 else if (strspn(optarg, "0123456789") == strlen(optarg)) {
313 conf.fd = strtonum(optarg, 0, INT_MAX, &errstr);
314 if (errstr != NULL)
315 errx(EX_USAGE, "'-h' expects a "
316 "file descriptor or '-'");
317 } else
318 errx(EX_USAGE, "'-h' expects a file "
319 "descriptor or '-'");
320 break;
321 case 'o':
322 conf.checkduplicate = false;
323 break;
324 case 'q':
325 conf.quiet = true;
326 break;
327 case 'r':
328 conf.deletehome = true;
329 break;
330 default:
331 addarg(&arglist, ch, optarg);
332 break;
333 }
334 optarg = NULL;
335 }
336
337 if (name != NULL && strlen(name) >= MAXLOGNAME)
338 errx(EX_USAGE, "name too long: %s", name);
339
340 /*
341 * Must be root to attempt an update
342 */
343 if (geteuid() != 0 && mode != M_PRINT && mode != M_NEXT && !conf.dryrun)
344 errx(EX_NOPERM, "you must be root to run this program");
345
346 /*
347 * We should immediately look for the -q 'quiet' switch so that we
348 * don't bother with extraneous errors
349 */
350 if (conf.quiet)
351 freopen(_PATH_DEVNULL, "w", stderr);
352
353 /*
354 * Set our base working path if not overridden
355 */
356
357 if (config == NULL) { /* Only override config location if -C not specified */
358 asprintf(&config, "%s/pw.conf", conf.etcpath);
359 if (config == NULL)
360 errx(EX_OSERR, "out of memory");
361 }
362
363 /*
364 * Now, let's do the common initialisation
365 */
366 conf.userconf = read_userconfig(config);
367
368 ch = funcs[which] (mode, name, id, &arglist);
369
370 /*
371 * If everything went ok, and we've been asked to update
372 * the NIS maps, then do it now
373 */
374 if (ch == EXIT_SUCCESS && nis) {
375 pid_t pid;
376
377 fflush(NULL);
378 if (chdir(_PATH_YP) == -1)
379 warn("chdir(" _PATH_YP ")");
380 else if ((pid = fork()) == -1)
381 warn("fork()");
382 else if (pid == 0) {
383 /* Is make anywhere else? */
384 execlp("/usr/bin/make", "make", (char *)NULL);
385 _exit(1);
386 } else {
387 int i;
388 waitpid(pid, &i, 0);
389 if ((i = WEXITSTATUS(i)) != 0)
390 errx(ch, "make exited with status %d", i);
391 else
392 pw_log(conf.userconf, mode, which, "NIS maps updated");
393 }
394 }
395 return ch;
195 return (cmdfunc[which][mode](argc, argv, arg1));
396}
397
398
399static int
400getindex(const char *words[], const char *word)
401{
196}
197
198
199static int
200getindex(const char *words[], const char *word)
201{
402 int i = 0;
202 int i = 0;
403
404 while (words[i]) {
405 if (strcmp(words[i], word) == 0)
203
204 while (words[i]) {
205 if (strcmp(words[i], word) == 0)
406 return i;
206 return (i);
407 i++;
408 }
207 i++;
208 }
409 return -1;
209 return (-1);
410}
411
412
413/*
414 * This is probably an overkill for a cmdline help system, but it reflects
415 * the complexity of the command line.
416 */
417

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451 "\t-L class user class\n"
452 "\t-h fd read password on fd\n"
453 "\t-H fd read encrypted password on fd\n"
454 "\t-Y update NIS maps\n"
455 "\t-N no update\n"
456 " Setting defaults:\n"
457 "\t-V etcdir alternate /etc location\n"
458 "\t-R rootir alternate root directory\n"
210}
211
212
213/*
214 * This is probably an overkill for a cmdline help system, but it reflects
215 * the complexity of the command line.
216 */
217

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251 "\t-L class user class\n"
252 "\t-h fd read password on fd\n"
253 "\t-H fd read encrypted password on fd\n"
254 "\t-Y update NIS maps\n"
255 "\t-N no update\n"
256 " Setting defaults:\n"
257 "\t-V etcdir alternate /etc location\n"
258 "\t-R rootir alternate root directory\n"
459 "\t-D set user defaults\n"
259 "\t-D set user defaults\n"
460 "\t-b dir default home root dir\n"
461 "\t-e period default expiry period\n"
462 "\t-p period default password change period\n"
463 "\t-g group default group\n"
464 "\t-G grp1,grp2 additional groups\n"
465 "\t-L class default user class\n"
466 "\t-k dir default home skeleton\n"
467 "\t-M mode home directory permissions\n"
468 "\t-u min,max set min,max uids\n"
469 "\t-i min,max set min,max gids\n"
470 "\t-w method set default password method\n"
471 "\t-s shell default shell\n"
472 "\t-y path set NIS passwd file path\n",
473 "usage: pw userdel [uid|name] [switches]\n"
474 "\t-V etcdir alternate /etc location\n"
475 "\t-R rootir alternate root directory\n"
476 "\t-n name login name\n"
477 "\t-u uid user id\n"
478 "\t-Y update NIS maps\n"
260 "\t-b dir default home root dir\n"
261 "\t-e period default expiry period\n"
262 "\t-p period default password change period\n"
263 "\t-g group default group\n"
264 "\t-G grp1,grp2 additional groups\n"
265 "\t-L class default user class\n"
266 "\t-k dir default home skeleton\n"
267 "\t-M mode home directory permissions\n"
268 "\t-u min,max set min,max uids\n"
269 "\t-i min,max set min,max gids\n"
270 "\t-w method set default password method\n"
271 "\t-s shell default shell\n"
272 "\t-y path set NIS passwd file path\n",
273 "usage: pw userdel [uid|name] [switches]\n"
274 "\t-V etcdir alternate /etc location\n"
275 "\t-R rootir alternate root directory\n"
276 "\t-n name login name\n"
277 "\t-u uid user id\n"
278 "\t-Y update NIS maps\n"
279 "\t-y path set NIS passwd file path\n"
479 "\t-r remove home & contents\n",
480 "usage: pw usermod [uid|name] [switches]\n"
481 "\t-V etcdir alternate /etc location\n"
482 "\t-R rootir alternate root directory\n"
483 "\t-C config configuration file\n"
484 "\t-q quiet operation\n"
485 "\t-F force add if no user\n"
486 "\t-n name login name\n"

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495 "\t-L class user class\n"
496 "\t-m [ -k dir ] create and set up home\n"
497 "\t-M mode home directory permissions\n"
498 "\t-s shell name of login shell\n"
499 "\t-w method set new password using method\n"
500 "\t-h fd read password on fd\n"
501 "\t-H fd read encrypted password on fd\n"
502 "\t-Y update NIS maps\n"
280 "\t-r remove home & contents\n",
281 "usage: pw usermod [uid|name] [switches]\n"
282 "\t-V etcdir alternate /etc location\n"
283 "\t-R rootir alternate root directory\n"
284 "\t-C config configuration file\n"
285 "\t-q quiet operation\n"
286 "\t-F force add if no user\n"
287 "\t-n name login name\n"

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296 "\t-L class user class\n"
297 "\t-m [ -k dir ] create and set up home\n"
298 "\t-M mode home directory permissions\n"
299 "\t-s shell name of login shell\n"
300 "\t-w method set new password using method\n"
301 "\t-h fd read password on fd\n"
302 "\t-H fd read encrypted password on fd\n"
303 "\t-Y update NIS maps\n"
304 "\t-y path set NIS passwd file path\n"
503 "\t-N no update\n",
504 "usage: pw usershow [uid|name] [switches]\n"
505 "\t-V etcdir alternate /etc location\n"
506 "\t-R rootir alternate root directory\n"
507 "\t-n name login name\n"
508 "\t-u uid user id\n"
509 "\t-F force print\n"
510 "\t-P prettier format\n"

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571 "\t-q quiet operation\n"
572 }
573 };
574
575 fprintf(stderr, "%s", help[which][mode]);
576 }
577 exit(EXIT_FAILURE);
578}
305 "\t-N no update\n",
306 "usage: pw usershow [uid|name] [switches]\n"
307 "\t-V etcdir alternate /etc location\n"
308 "\t-R rootir alternate root directory\n"
309 "\t-n name login name\n"
310 "\t-u uid user id\n"
311 "\t-F force print\n"
312 "\t-P prettier format\n"

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373 "\t-q quiet operation\n"
374 }
375 };
376
377 fprintf(stderr, "%s", help[which][mode]);
378 }
379 exit(EXIT_FAILURE);
380}
579
580struct carg *
581getarg(struct cargs * _args, int ch)
582{
583 struct carg *c;
584
585 if (_args == NULL)
586 return (NULL);
587
588 c = LIST_FIRST(_args);
589
590 while (c != NULL && c->ch != ch)
591 c = LIST_NEXT(c, list);
592 return c;
593}
594
595struct carg *
596addarg(struct cargs * _args, int ch, char *argstr)
597{
598 struct carg *ca = malloc(sizeof(struct carg));
599
600 if (ca == NULL)
601 errx(EX_OSERR, "out of memory");
602 ca->ch = ch;
603 ca->val = argstr;
604 LIST_INSERT_HEAD(_args, ca, list);
605 return ca;
606}