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+/*-
+ * Copyright (c) 1996 by David L. Nugent <davidn@blaze.net.au>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer as
+ * the first lines of this file unmodified.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by David L. Nugent.
+ * 4. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DAVID L. NUGENT ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id$
+ */
+
+#include "pw.h"
+
+static char *progname = "pw";
+
+const char *Modes[] = {"add", "del", "mod", "show", NULL};
+const char *Which[] = {"user", "group", NULL};
+static const char *Combo1[] = {"useradd", "userdel", "usermod", "usershow",
+ "groupadd", "groupdel", "groupmod", "groupshow",
+NULL};
+static const char *Combo2[] = {"adduser", "deluser", "moduser", "showuser",
+ "addgroup", "delgroup", "modgroup", "showgroup",
+NULL};
+
+static struct cargs arglist;
+
+static int getindex(const char *words[], const char *word);
+static void cmdhelp(int mode, int which);
+
+
+int
+main(int argc, char *argv[])
+{
+ int ch;
+ int mode = -1;
+ int which = -1;
+ struct userconf *cnf;
+
+ static const char *opts[W_NUM][M_NUM] =
+ {
+ /* user */ {"C:qn:u:c:d:e:p:g:G:mk:s:oL:i:w:h:Db", "C:qn:u:r", "C:qn:u:c:d:e:p:g:G:mk:s:L:h:F", "C:qn:u:Fpa"},
+ /* grp */ {"C:qn:g:h:p", "C:qn:g:", "C:qn:g:l:h:F", "C:qn:g:Fpa"}
+ };
+
+ static int (*funcs[W_NUM]) (struct userconf * _cnf, int _mode, struct cargs * _args) =
+ { /* Request handlers */
+ pw_user,
+ pw_group
+ };
+
+ umask(0); /* We wish to handle this manually */
+ progname = strrchr(argv[0], '/');
+ if (progname != NULL)
+ ++progname;
+ else
+ progname = argv[0];
+
+ LIST_INIT(&arglist);
+
+ /*
+ * Break off the first couple of words to determine what exactly
+ * we're being asked to do
+ */
+ while (argc > 1 && *argv[1] != '-') {
+ int tmp;
+
+ if ((tmp = getindex(Modes, argv[1])) != -1)
+ mode = tmp;
+ else if ((tmp = getindex(Which, argv[1])) != -1)
+ which = tmp;
+ else if ((tmp = getindex(Combo1, argv[1])) != -1 || (tmp = getindex(Combo2, argv[1])) != -1) {
+ which = tmp / M_NUM;
+ mode = tmp % M_NUM;
+ } else if (strcmp(argv[1], "help") == 0)
+ cmdhelp(mode, which);
+ else if (which != -1 && mode != -1 && arglist.lh_first == NULL)
+ addarg(&arglist, 'n', argv[1]);
+ else
+ cmderr(X_CMDERR, "Unknown keyword `%s'\n", argv[1]);
+ ++argv;
+ --argc;
+ }
+
+ /*
+ * Bail out unless the user is specific!
+ */
+ if (mode == -1 || which == -1)
+ cmdhelp(mode, which);
+
+ /*
+ * Must be root to attempt an update
+ */
+ if (getuid() != 0 && mode != M_PRINT)
+ cmderr(X_PERMERR, "you must be root to run this program\n");
+
+ /*
+ * We know which mode we're in and what we're about to do, so now
+ * let's dispatch the remaining command line args in a genric way.
+ */
+ argv[0] = progname; /* Preserve this */
+ optarg = NULL;
+
+ while ((ch = getopt(argc, argv, opts[which][mode])) != -1) {
+ if (ch == '?')
+ cmderr(X_CMDERR, NULL);
+ else
+ addarg(&arglist, ch, optarg);
+ optarg = NULL;
+ }
+
+ /*
+ * We should immediately look for the -q 'quiet' switch so that we
+ * don't bother with extraneous errors
+ */
+ if (getarg(&arglist, 'q') != NULL)
+ freopen("/dev/null", "w", stderr);
+
+ ch = X_CMDERR;
+
+ /*
+ * Now, let's do the common initialisation
+ */
+ cnf = read_userconfig(getarg(&arglist, 'C') ? getarg(&arglist, 'C')->val : NULL);
+
+ if (funcs[which])
+ ch = funcs[which] (cnf, mode, &arglist);
+ else
+ fprintf(stderr, "%s: %s[%s] not yet implemented.\n", progname, Which[which], Modes[mode]);
+
+ return ch;
+}
+
+static int
+getindex(const char *words[], const char *word)
+{
+ int i = 0;
+
+ while (words[i]) {
+ if (strcmp(words[i], word) == 0)
+ return i;
+ i++;
+ }
+ return -1;
+}
+
+
+/*
+ * This is probably an overkill for a cmdline help system, but it reflects
+ * the complexity of the command line.
+ */
+
+static void
+banner(void)
+{
+ fprintf(stderr, "%s: ", progname);
+}
+
+void
+cmderr(int ec, char const * fmt,...)
+{
+ if (fmt != NULL) {
+ va_list argp;
+
+ banner();
+ va_start(argp, fmt);
+ vfprintf(stderr, fmt, argp);
+ va_end(argp);
+ }
+ exit(ec);
+}
+
+static void
+cmdhelp(int mode, int which)
+{
+ banner();
+ if (which == -1)
+ fprintf(stderr, "usage: %s [user|group] [add|del|mod|show] [ help | switches/values ]\n", progname);
+ else if (mode == -1)
+ fprintf(stderr, "usage: %s %s [add|del|mod] [ help | switches/values ]\n", progname, Which[which]);
+ else {
+
+ /*
+ * We need to give mode specific help
+ */
+ static const char *help[W_NUM][M_NUM] =
+ {
+ {
+ "usage: %s useradd [name] [switches]\n"
+ "\t-C config configuration file\n"
+ "\t-q quiet operation\n"
+ " Adding users:\n"
+ "\t-n name login name\n"
+ "\t-u uid user id\n"
+ "\t-c comment user name/comment\n"
+ "\t-d directory home directory\n"
+ "\t-e date account expiry date\n"
+ "\t-p date password expiry date\n"
+ "\t-g grp initial group\n"
+ "\t-G grp1,grp2 additional groups\n"
+ "\t-m [ -k dir ] create and set up home\n"
+ "\t-s shell name of login shell\n"
+ "\t-o duplicate uid ok\n"
+ "\t-L class user class\n"
+ "\t-h fd read password on fd\n"
+ " Setting defaults:\n"
+ "\t-D set user defaults\n"
+ "\t-b dir default home root dir\n"
+ "\t-e period default expiry period\n"
+ "\t-p period default password change period\n"
+ "\t-g group default group\n"
+ "\t-G grp1,grp2 additional groups\n"
+ "\t-L class default user class\n"
+ "\t-k dir default home skeleton\n"
+ "\t-u min,max set min,max uids\n"
+ "\t-i min,max set min,max gids\n"
+ "\t-w method set default password method\n"
+ "\t-s shell default shell\n",
+ "usage: %s userdel [uid|name] [switches]\n"
+ "\t-n name login name\n"
+ "\t-u uid user id\n"
+ "\t-r remove home & contents\n",
+ "usage: %s usermod [uid|name] [switches]\n"
+ "\t-C config configuration file\n"
+ "\t-q quiet operation\n"
+ "\t-F force add if no user\n"
+ "\t-n name login name\n"
+ "\t-u uid user id\n"
+ "\t-c comment user name/comment\n"
+ "\t-d directory home directory\n"
+ "\t-e date account expiry date\n"
+ "\t-p date password expiry date\n"
+ "\t-g grp initial group\n"
+ "\t-G grp1,grp2 additional groups\n"
+ "\t-l name new login name\n"
+ "\t-L class user class\n"
+ "\t-m [ -k dir ] create and set up home\n"
+ "\t-s shell name of login shell\n"
+ "\t-h fd read password on fd\n",
+ "usage: %s usershow [uid|name] [switches]\n"
+ "\t-n name login name\n"
+ "\t-u uid user id\n"
+ "\t-F force print\n"
+ "\t-p prettier format\n"
+ "\t-a print all users\n"
+ },
+ {
+ "usage: %s groupadd [group|gid] [switches]\n"
+ "\t-C config configuration file\n"
+ "\t-q quiet operation\n"
+ "\t-n group group name\n"
+ "\t-g gid group id\n"
+ "\t-o duplicate gid ok\n",
+ "usage: %s groupdel [group|gid] [switches]\n"
+ "\t-n name group name\n"
+ "\t-g gid group id\n",
+ "usage: %s groupmod [group|gid] [switches]\n"
+ "\t-C config configuration file\n"
+ "\t-q quiet operation\n"
+ "\t-F force add if not exists\n"
+ "\t-n name group name\n"
+ "\t-g gid group id\n"
+ "\t-l name new group name\n",
+ "usage: %s groupshow [group|gid] [switches]\n"
+ "\t-n name group name\n"
+ "\t-g gid group id\n"
+ "\t-F force print\n"
+ "\t-p prettier format\n"
+ "\t-a print all accounting groups\n"
+ }
+ };
+
+ fprintf(stderr, help[which][mode], progname);
+ }
+ exit(X_CMDERR);
+}
+
+struct carg *
+getarg(struct cargs * _args, int ch)
+{
+ struct carg *c = _args->lh_first;
+
+ while (c != NULL && c->ch != ch)
+ c = c->list.le_next;
+ return c;
+}
+
+struct carg *
+addarg(struct cargs * _args, int ch, char *argstr)
+{
+ struct carg *ca = malloc(sizeof(struct carg));
+
+ if (ca == NULL)
+ cmderr(X_MEMERR, "Abort - out of memory\n");
+ ca->ch = ch;
+ ca->val = argstr;
+ LIST_INSERT_HEAD(_args, ca, list);
+ return ca;
+}
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