3 * David L. Nugent. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
14 * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/usr.sbin/pw/pw_conf.c,v 1.16 2011/03/08 20:13:29 jkim Exp $
63 static char bourne_shell[] = "sh";
65 static char *system_shells[_UC_MAXSHELLS] =
72 static char const *booltrue[] =
74 "yes", "true", "1", "on", NULL
76 static char const *boolfalse[] =
78 "no", "false", "0", "off", NULL
81 static struct userconf config =
83 0, /* Default password for new users? (nologin) */
86 NULL, /* NIS version of the passwd file */
87 "/usr/share/skel", /* Where to obtain skeleton files */
88 NULL, /* Mail to send to new accounts */
89 "/var/log/userlog", /* Where to log changes */
90 "/home", /* Where to create home directory */
91 _DEF_DIRMODE, /* Home directory perms, modified by umask */
92 "/bin", /* Where shells are located */
93 system_shells, /* List of shells (first is default) */
94 bourne_shell, /* Default shell */
95 NULL, /* Default group name */
96 NULL, /* Default (additional) groups */
97 NULL, /* Default login class */
98 1000, 32000, /* Allowed range of uids */
99 1000, 32000, /* Allowed range of gids */
100 0, /* Days until account expires */
101 0, /* Days until password expires */
102 0 /* size of default_group array */
105 static char const *comments[_UC_FIELDS] =
107 "#\n# pw.conf - user/group configuration defaults\n#\n",
108 "\n# Password for new users? no=nologin yes=loginid none=blank random=random\n",
109 "\n# Reuse gaps in uid sequence? (yes or no)\n",
110 "\n# Reuse gaps in gid sequence? (yes or no)\n",
111 "\n# Path to the NIS passwd file (blank or 'no' for none)\n",
112 "\n# Obtain default dotfiles from this directory\n",
113 "\n# Mail this file to new user (/etc/newuser.msg or no)\n",
114 "\n# Log add/change/remove information in this file\n",
115 "\n# Root directory in which $HOME directory is created\n",
116 "\n# Mode for the new $HOME directory, will be modified by umask\n",
117 "\n# Colon separated list of directories containing valid shells\n",
118 "\n# Comma separated list of available shells (without paths)\n",
119 "\n# Default shell (without path)\n",
120 "\n# Default group (leave blank for new group per user)\n",
121 "\n# Extra groups for new users\n",
122 "\n# Default login class for new users\n",
123 "\n# Range of valid default user ids\n",
125 "\n# Range of valid default group ids\n",
127 "\n# Days after which account expires (0=disabled)\n",
128 "\n# Days after which password expires (0=disabled)\n"
131 static char const *kwds[] =
159 unquote(char const * str)
161 if (str && (*str == '"' || *str == '\'')) {
162 char *p = strchr(str + 1, *str);
166 return (char *) (*++str ? str : NULL);
172 boolean_val(char const * str, int dflt)
174 if ((str = unquote(str)) != NULL) {
177 for (i = 0; booltrue[i]; i++)
178 if (strcmp(str, booltrue[i]) == 0)
180 for (i = 0; boolfalse[i]; i++)
181 if (strcmp(str, boolfalse[i]) == 0)
185 * Special cases for defaultpassword
187 if (strcmp(str, "random") == 0)
189 if (strcmp(str, "none") == 0)
203 return val ? booltrue[0] : boolfalse[0];
207 newstr(char const * p)
211 if ((p = unquote(p)) != NULL) {
212 int l = strlen(p) + 1;
214 if ((q = malloc(l)) != NULL)
224 read_userconfig(char const * file)
228 extendarray(&config.groups, &config.numgroups, 200);
229 memset(config.groups, 0, config.numgroups * sizeof(char *));
231 file = _PATH_PW_CONF;
232 if ((fp = fopen(file, "r")) != NULL) {
233 int buflen = LNBUFSZ;
234 char *buf = malloc(buflen);
237 while (fgets(buf, buflen, fp) != NULL) {
240 while ((p = strchr(buf, '\n')) == NULL) {
242 if (extendline(&buf, &buflen, buflen + LNBUFSZ) == -1) {
244 while ((ch = fgetc(fp)) != '\n' && ch != EOF);
245 goto nextline; /* Ignore it */
248 if (fgets(buf + l, buflen - l, fp) == NULL)
249 break; /* Unterminated last line */
255 if (*buf && (p = strtok(buf, " \t\r\n=")) != NULL && *p != '#') {
256 static char const toks[] = " \t\r\n,=";
257 char *q = strtok(NULL, toks);
261 while (i < _UC_FIELDS && strcmp(p, kwds[i]) != 0)
265 printf("Got unknown kwd `%s' val=`%s'\n", p, q ? q : "");
267 printf("Got kwd[%s]=%s\n", p, q);
271 config.default_password = boolean_val(q, 1);
274 config.reuse_uids = boolean_val(q, 0);
277 config.reuse_gids = boolean_val(q, 0);
280 config.nispasswd = (q == NULL || !boolean_val(q, 1))
284 config.dotdir = (q == NULL || !boolean_val(q, 1))
288 config.newmail = (q == NULL || !boolean_val(q, 1))
292 config.logfile = (q == NULL || !boolean_val(q, 1))
296 config.home = (q == NULL || !boolean_val(q, 1))
297 ? "/home" : newstr(q);
300 modeset = setmode(q);
301 config.homemode = (q == NULL || !boolean_val(q, 1))
302 ? _DEF_DIRMODE : getmode(modeset, _DEF_DIRMODE);
306 config.shelldir = (q == NULL || !boolean_val(q, 1))
307 ? "/bin" : newstr(q);
310 for (i = 0; i < _UC_MAXSHELLS && q != NULL; i++, q = strtok(NULL, toks))
311 system_shells[i] = newstr(q);
313 while (i < _UC_MAXSHELLS)
314 system_shells[i++] = NULL;
316 case _UC_DEFAULTSHELL:
317 config.shell_default = (q == NULL || !boolean_val(q, 1))
318 ? (char *) bourne_shell : newstr(q);
320 case _UC_DEFAULTGROUP:
322 config.default_group = (q == NULL || !boolean_val(q, 1) || GETGRNAM(q) == NULL)
325 case _UC_EXTRAGROUPS:
326 for (i = 0; q != NULL; q = strtok(NULL, toks)) {
327 if (extendarray(&config.groups, &config.numgroups, i + 2) != -1)
328 config.groups[i++] = newstr(q);
331 while (i < config.numgroups)
332 config.groups[i++] = NULL;
334 case _UC_DEFAULTCLASS:
335 config.default_class = (q == NULL || !boolean_val(q, 1))
339 if ((q = unquote(q)) != NULL && isdigit(*q))
340 config.min_uid = (uid_t) atol(q);
343 if ((q = unquote(q)) != NULL && isdigit(*q))
344 config.max_uid = (uid_t) atol(q);
347 if ((q = unquote(q)) != NULL && isdigit(*q))
348 config.min_gid = (gid_t) atol(q);
351 if ((q = unquote(q)) != NULL && isdigit(*q))
352 config.max_gid = (gid_t) atol(q);
355 if ((q = unquote(q)) != NULL && isdigit(*q))
356 config.expire_days = atoi(q);
359 if ((q = unquote(q)) != NULL && isdigit(*q))
360 config.password_days = atoi(q);
376 write_userconfig(char const * file)
381 file = _PATH_PW_CONF;
383 if ((fd = open(file, O_CREAT | O_RDWR | O_TRUNC | O_EXLOCK, 0644)) != -1) {
386 if ((fp = fdopen(fd, "w")) == NULL)
391 char *buf = malloc(len);
393 for (i = _UC_NONE; i < _UC_FIELDS; i++) {
395 char const *val = buf;
400 val = boolean_str(config.default_password);
403 val = boolean_str(config.reuse_uids);
406 val = boolean_str(config.reuse_gids);
409 val = config.nispasswd ? config.nispasswd : "";
413 val = config.dotdir ? config.dotdir : boolean_str(0);
416 val = config.newmail ? config.newmail : boolean_str(0);
419 val = config.logfile ? config.logfile : boolean_str(0);
425 sprintf(buf, "%04o", config.homemode);
429 val = config.shelldir;
432 for (j = k = 0; j < _UC_MAXSHELLS && system_shells[j] != NULL; j++) {
434 int l = snprintf(lbuf, sizeof lbuf, "%s\"%s\"", k ? "," : "", system_shells[j]);
437 if (l + k + 1 < len || extendline(&buf, &len, len + LNBUFSZ) != -1) {
438 strcpy(buf + k, lbuf);
444 case _UC_DEFAULTSHELL:
445 val = config.shell_default ? config.shell_default : bourne_shell;
447 case _UC_DEFAULTGROUP:
448 val = config.default_group ? config.default_group : "";
450 case _UC_EXTRAGROUPS:
451 extendarray(&config.groups, &config.numgroups, 200);
452 for (j = k = 0; j < config.numgroups && config.groups[j] != NULL; j++) {
454 int l = snprintf(lbuf, sizeof lbuf, "%s\"%s\"", k ? "," : "", config.groups[j]);
457 if (l + k + 1 < len || extendline(&buf, &len, len + 1024) != -1) {
458 strcpy(buf + k, lbuf);
464 case _UC_DEFAULTCLASS:
465 val = config.default_class ? config.default_class : "";
468 sprintf(buf, "%lu", (unsigned long) config.min_uid);
472 sprintf(buf, "%lu", (unsigned long) config.max_uid);
476 sprintf(buf, "%lu", (unsigned long) config.min_gid);
480 sprintf(buf, "%lu", (unsigned long) config.max_gid);
484 sprintf(buf, "%d", config.expire_days);
488 sprintf(buf, "%d", config.password_days);
496 fputs(comments[i], fp);
500 fprintf(fp, "%s = \"%s\"\n", kwds[i], val);
502 fprintf(fp, "%s = %s\n", kwds[i], val);
504 printf("WROTE: %s = %s\n", kwds[i], val);
509 return fclose(fp) != EOF;