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5f12594a29
updating 2) Add -V <etcdir>, which allows maintaining user/group database in alternate locations other than /etc.
427 lines
12 KiB
C
427 lines
12 KiB
C
/*-
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* Copyright (C) 1996
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* David L. Nugent. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"$Id: pw.c,v 1.11 1999/01/08 10:52:38 davidn Exp $";
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#endif /* not lint */
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#include <err.h>
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#include <fcntl.h>
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#include <paths.h>
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#include <sys/wait.h>
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#include "pw.h"
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const char *Modes[] = {"add", "del", "mod", "show", "next", NULL};
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const char *Which[] = {"user", "group", NULL};
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static const char *Combo1[] = {
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"useradd", "userdel", "usermod", "usershow", "usernext",
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"groupadd", "groupdel", "groupmod", "groupshow", "groupnext",
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NULL};
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static const char *Combo2[] = {
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"adduser", "deluser", "moduser", "showuser", "nextuser",
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"addgroup", "delgroup", "modgroup", "showgroup", "nextgroup",
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NULL};
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struct pwf PWF =
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{
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0,
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setpwent,
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endpwent,
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getpwent,
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getpwuid,
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getpwnam,
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pwdb,
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setgrent,
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endgrent,
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getgrent,
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getgrgid,
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getgrnam,
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grdb
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};
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struct pwf VPWF =
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{
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1,
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vsetpwent,
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vendpwent,
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vgetpwent,
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vgetpwuid,
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vgetpwnam,
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vpwdb,
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vsetgrent,
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vendgrent,
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vgetgrent,
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vgetgrgid,
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vgetgrnam,
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vgrdb
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};
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static struct cargs arglist;
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static int getindex(const char *words[], const char *word);
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static void cmdhelp(int mode, int which);
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int
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main(int argc, char *argv[])
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{
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int ch;
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int mode = -1;
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int which = -1;
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char *config = NULL;
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struct userconf *cnf;
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static const char *opts[W_NUM][M_NUM] =
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{
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{ /* user */
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"VC:qn:u:c:d:e:p:g:G:mk:s:oL:i:w:h:Db:NPy:Y",
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"VC:qn:u:rY",
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"VC:qn:u:c:d:e:p:g:G:ml:k:s:w:L:h:FNPY",
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"VC:qn:u:FPa",
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"VC:q"
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},
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{ /* grp */
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"VC:qn:g:h:M:pNPY",
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"VC:qn:g:Y",
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"VC:qn:g:l:h:FM:m:NPY",
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"VC:qn:g:FPa",
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"VC:q"
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}
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};
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static int (*funcs[W_NUM]) (struct userconf * _cnf, int _mode, struct cargs * _args) =
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{ /* Request handlers */
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pw_user,
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pw_group
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};
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umask(0); /* We wish to handle this manually */
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LIST_INIT(&arglist);
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/*
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* Break off the first couple of words to determine what exactly
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* we're being asked to do
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*/
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while (argc > 1) {
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int tmp;
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if (*argv[1] == '-') {
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/*
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* Special case, allow pw -V<dir> <operation> [args] for scripts etc.
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*/
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if (argv[1][1] == 'V') {
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optarg = &argv[1][2];
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if (*optarg == '\0') {
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optarg = argv[2];
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++argv;
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--argc;
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}
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addarg(&arglist, 'V', optarg);
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}
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break;
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}
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else if ((tmp = getindex(Modes, argv[1])) != -1)
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mode = tmp;
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else if ((tmp = getindex(Which, argv[1])) != -1)
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which = tmp;
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else if ((tmp = getindex(Combo1, argv[1])) != -1 || (tmp = getindex(Combo2, argv[1])) != -1) {
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which = tmp / M_NUM;
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mode = tmp % M_NUM;
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} else if (strcmp(argv[1], "help") == 0)
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cmdhelp(mode, which);
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else if (which != -1 && mode != -1 && arglist.lh_first == NULL)
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addarg(&arglist, 'n', argv[1]);
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else
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errx(EX_USAGE, "unknown keyword `%s'", argv[1]);
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++argv;
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--argc;
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}
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/*
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* Bail out unless the user is specific!
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*/
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if (mode == -1 || which == -1)
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cmdhelp(mode, which);
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/*
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* We know which mode we're in and what we're about to do, so now
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* let's dispatch the remaining command line args in a genric way.
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*/
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optarg = NULL;
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while ((ch = getopt(argc, argv, opts[which][mode])) != -1) {
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if (ch == '?')
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errx(EX_USAGE, NULL);
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else
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addarg(&arglist, ch, optarg);
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optarg = NULL;
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}
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/*
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* Must be root to attempt an update
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*/
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if (geteuid() != 0 && mode != M_PRINT && mode != M_NEXT && getarg(&arglist, 'N')==NULL)
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errx(EX_NOPERM, "you must be root to run this program");
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/*
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* We should immediately look for the -q 'quiet' switch so that we
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* don't bother with extraneous errors
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*/
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if (getarg(&arglist, 'q') != NULL)
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freopen("/dev/null", "w", stderr);
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/*
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* Set our base working path if not overridden
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*/
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config = getarg(&arglist, 'C') ? getarg(&arglist, 'C')->val : NULL;
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if (getarg(&arglist, 'V') != NULL) {
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char * etcpath = getarg(&arglist, 'V')->val;
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if (*etcpath) {
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if (config == NULL) { /* Only override config location if -C not specified */
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config = malloc(MAXPATHLEN);
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snprintf(config, MAXPATHLEN, "%s/pw.conf", etcpath);
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}
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memcpy(&PWF, &VPWF, sizeof PWF);
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setpwdir(etcpath);
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setgrdir(etcpath);
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}
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}
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/*
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* Now, let's do the common initialisation
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*/
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cnf = read_userconfig(config);
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ch = funcs[which] (cnf, mode, &arglist);
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/*
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* If everything went ok, and we've been asked to update
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* the NIS maps, then do it now
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*/
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if (ch == EXIT_SUCCESS && getarg(&arglist, 'Y') != NULL) {
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pid_t pid;
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fflush(NULL);
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if (chdir(_PATH_YP) == -1)
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warn("chdir(" _PATH_YP ")");
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else if ((pid = fork()) == -1)
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warn("fork()");
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else if (pid == 0) {
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/* Is make anywhere else? */
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execlp("/usr/bin/make", "make", NULL);
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_exit(1);
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} else {
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int i;
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waitpid(pid, &i, 0);
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if ((i = WEXITSTATUS(i)) != 0)
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errx(ch, "make exited with status %d", i);
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else
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pw_log(cnf, mode, which, "NIS maps updated");
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}
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}
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return ch;
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}
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static int
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getindex(const char *words[], const char *word)
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{
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int i = 0;
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while (words[i]) {
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if (strcmp(words[i], word) == 0)
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return i;
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i++;
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}
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return -1;
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}
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/*
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* This is probably an overkill for a cmdline help system, but it reflects
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* the complexity of the command line.
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*/
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static void
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cmdhelp(int mode, int which)
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{
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if (which == -1)
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fprintf(stderr, "usage: pw [user|group] [add|del|mod|show|next] [ help | switches/values ]\n");
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else if (mode == -1)
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fprintf(stderr, "usage: pw %s [add|del|mod|show|next] [ help | switches/values ]\n", Which[which]);
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else {
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/*
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* We need to give mode specific help
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*/
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static const char *help[W_NUM][M_NUM] =
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{
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{
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"usage: pw useradd [name] [switches]\n"
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"\t-V etcdir alternate /etc location\n"
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"\t-C config configuration file\n"
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"\t-q quiet operation\n"
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" Adding users:\n"
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"\t-n name login name\n"
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"\t-u uid user id\n"
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"\t-c comment user name/comment\n"
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"\t-d directory home directory\n"
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"\t-e date account expiry date\n"
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"\t-p date password expiry date\n"
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"\t-g grp initial group\n"
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"\t-G grp1,grp2 additional groups\n"
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"\t-m [ -k dir ] create and set up home\n"
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"\t-s shell name of login shell\n"
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"\t-o duplicate uid ok\n"
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"\t-L class user class\n"
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"\t-h fd read password on fd\n"
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"\t-Y update NIS maps\n"
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"\t-N no update\n"
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" Setting defaults:\n"
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"\t-V etcdir alternate /etc location\n"
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"\t-D set user defaults\n"
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"\t-b dir default home root dir\n"
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"\t-e period default expiry period\n"
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"\t-p period default password change period\n"
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"\t-g group default group\n"
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"\t-G grp1,grp2 additional groups\n"
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"\t-L class default user class\n"
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"\t-k dir default home skeleton\n"
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"\t-u min,max set min,max uids\n"
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"\t-i min,max set min,max gids\n"
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"\t-w method set default password method\n"
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"\t-s shell default shell\n"
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"\t-y path set NIS passwd file path\n",
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"usage: pw userdel [uid|name] [switches]\n"
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"\t-V etcdir alternate /etc location\n"
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"\t-n name login name\n"
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"\t-u uid user id\n"
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"\t-Y update NIS maps\n"
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"\t-r remove home & contents\n",
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"usage: pw usermod [uid|name] [switches]\n"
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"\t-V etcdir alternate /etc location\n"
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"\t-C config configuration file\n"
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"\t-q quiet operation\n"
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"\t-F force add if no user\n"
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"\t-n name login name\n"
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"\t-u uid user id\n"
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"\t-c comment user name/comment\n"
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"\t-d directory home directory\n"
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"\t-e date account expiry date\n"
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"\t-p date password expiry date\n"
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"\t-g grp initial group\n"
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"\t-G grp1,grp2 additional groups\n"
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"\t-l name new login name\n"
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"\t-L class user class\n"
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"\t-m [ -k dir ] create and set up home\n"
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"\t-s shell name of login shell\n"
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"\t-w method set new password using method\n"
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"\t-h fd read password on fd\n"
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"\t-Y update NIS maps\n"
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"\t-N no update\n",
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"usage: pw usershow [uid|name] [switches]\n"
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"\t-V etcdir alternate /etc location\n"
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"\t-n name login name\n"
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"\t-u uid user id\n"
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"\t-F force print\n"
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"\t-P prettier format\n"
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"\t-a print all users\n",
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"usage: pw usernext [switches]\n"
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"\t-V etcdir alternate /etc location\n"
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"\t-C config configuration file\n"
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},
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{
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"usage: pw groupadd [group|gid] [switches]\n"
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"\t-V etcdir alternate /etc location\n"
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"\t-C config configuration file\n"
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"\t-q quiet operation\n"
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"\t-n group group name\n"
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"\t-g gid group id\n"
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"\t-M usr1,usr2 add users as group members\n"
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"\t-o duplicate gid ok\n"
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"\t-Y update NIS maps\n"
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"\t-N no update\n",
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"usage: pw groupdel [group|gid] [switches]\n"
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"\t-V etcdir alternate /etc location\n"
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"\t-n name group name\n"
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"\t-g gid group id\n"
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"\t-Y update NIS maps\n",
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"usage: pw groupmod [group|gid] [switches]\n"
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"\t-V etcdir alternate /etc location\n"
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"\t-C config configuration file\n"
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"\t-q quiet operation\n"
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"\t-F force add if not exists\n"
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"\t-n name group name\n"
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"\t-g gid group id\n"
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"\t-M usr1,usr2 replaces users as group members\n"
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"\t-m usr1,usr2 add users as group members\n"
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"\t-l name new group name\n"
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"\t-Y update NIS maps\n"
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"\t-N no update\n",
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"usage: pw groupshow [group|gid] [switches]\n"
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"\t-V etcdir alternate /etc location\n"
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"\t-n name group name\n"
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"\t-g gid group id\n"
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"\t-F force print\n"
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"\t-P prettier format\n"
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"\t-a print all accounting groups\n",
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"usage: pw groupnext [switches]\n"
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"\t-V etcdir alternate /etc location\n"
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"\t-C config configuration file\n"
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}
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};
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fprintf(stderr, help[which][mode]);
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}
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exit(EXIT_FAILURE);
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}
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struct carg *
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getarg(struct cargs * _args, int ch)
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{
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struct carg *c = _args->lh_first;
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while (c != NULL && c->ch != ch)
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c = c->list.le_next;
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return c;
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}
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struct carg *
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addarg(struct cargs * _args, int ch, char *argstr)
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{
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struct carg *ca = malloc(sizeof(struct carg));
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if (ca == NULL)
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errx(EX_OSERR, "out of memory");
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ca->ch = ch;
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ca->val = argstr;
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LIST_INSERT_HEAD(_args, ca, list);
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return ca;
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}
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