/*- * Copyright (C) 1996 * David L. Nugent. 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. * 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. * * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. */ #ifndef lint static const char rcsid[] = "$Id: pw.c,v 1.8 1998/07/16 17:18:25 nate Exp $"; #endif /* not lint */ #include "pw.h" #include #include #include #include const char *Modes[] = {"add", "del", "mod", "show", "next", NULL}; const char *Which[] = {"user", "group", NULL}; static const char *Combo1[] = { "useradd", "userdel", "usermod", "usershow", "usernext", "groupadd", "groupdel", "groupmod", "groupshow", "groupnext", NULL}; static const char *Combo2[] = { "adduser", "deluser", "moduser", "showuser", "nextuser", "addgroup", "delgroup", "modgroup", "showgroup", "nextgroup", NULL}; static struct cargs arglist; static int getindex(const char *words[], const char *word); static void cmdhelp(int mode, int which); static void filelock(const char *filename); 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:NPy:Y", "C:qn:u:rY", "C:qn:u:c:d:e:p:g:G:ml:k:s:w:L:h:FNPY", "C:qn:u:FPa", "C:q" }, { /* grp */ "C:qn:g:h:M:pNPY", "C:qn:g:Y", "C:qn:g:l:h:FM:m:NPY", "C:qn:g:FPa", "C:q" } }; 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 */ 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 errx(EX_USAGE, "unknown keyword `%s'", argv[1]); ++argv; --argc; } /* * Bail out unless the user is specific! */ if (mode == -1 || which == -1) cmdhelp(mode, which); /* * 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. */ optarg = NULL; while ((ch = getopt(argc, argv, opts[which][mode])) != -1) { if (ch == '?') errx(EX_USAGE, NULL); else addarg(&arglist, ch, optarg); optarg = NULL; } /* * Must be root to attempt an update */ if (geteuid() != 0 && mode != M_PRINT && mode != M_NEXT && getarg(&arglist, 'N')==NULL) errx(EX_NOPERM, "you must be root to run this program"); /* * 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); /* * Now, let's do the common initialisation */ cnf = read_userconfig(getarg(&arglist, 'C') ? getarg(&arglist, 'C')->val : NULL); /* * Try to lock the master passowrd and group files right away (we * don't care if it works, since this is just advisory locking. */ filelock(_PATH_GROUP); filelock(_PATH_MASTERPASSWD); ch = funcs[which] (cnf, mode, &arglist); /* * If everything went ok, and we've been asked to update * the NIS maps, then do it now */ if (ch == EXIT_SUCCESS && getarg(&arglist, 'Y') != NULL) { pid_t pid; fflush(NULL); if (chdir(_PATH_YP) == -1) warn("chdir(" _PATH_YP ")"); else if ((pid = fork()) == -1) warn("fork()"); else if (pid == 0) { /* Is make anywhere else? */ execlp("/usr/bin/make", "make", NULL); _exit(1); } else { int i; waitpid(pid, &i, 0); if ((i = WEXITSTATUS(i)) != 0) errx(ch, "make exited with status %d", i); else pw_log(cnf, mode, which, "NIS maps updated"); } } return ch; } static void filelock(const char *filename) { open(filename, O_RDONLY | O_EXLOCK, 0); } 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 cmdhelp(int mode, int which) { if (which == -1) fprintf(stderr, "usage: pw [user|group] [add|del|mod|show|next] [ help | switches/values ]\n"); else if (mode == -1) fprintf(stderr, "usage: pw %s [add|del|mod|show|next] [ help | switches/values ]\n", Which[which]); else { /* * We need to give mode specific help */ static const char *help[W_NUM][M_NUM] = { { "usage: pw 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" "\t-Y update NIS maps\n" "\t-N no update\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" "\t-y path set NIS passwd file path\n", "usage: pw userdel [uid|name] [switches]\n" "\t-n name login name\n" "\t-u uid user id\n" "\t-Y update NIS maps\n" "\t-r remove home & contents\n", "usage: pw 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-w method set new password using method\n" "\t-h fd read password on fd\n" "\t-Y update NIS maps\n" "\t-N no update\n", "usage: pw 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: pw usernext [switches]\n" "\t-C config configuration file\n" }, { "usage: pw 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-M usr1,usr2 add users as group members\n" "\t-o duplicate gid ok\n" "\t-Y update NIS maps\n" "\t-N no update\n", "usage: pw groupdel [group|gid] [switches]\n" "\t-n name group name\n" "\t-g gid group id\n" "\t-Y update NIS maps\n", "usage: pw 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-M usr1,usr2 replaces users as group members\n" "\t-m usr1,usr2 add users as group members\n" "\t-l name new group name\n" "\t-Y update NIS maps\n" "\t-N no update\n", "usage: pw 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", "usage: pw groupnext [switches]\n" "\t-C config configuration file\n" } }; fprintf(stderr, help[which][mode]); } exit(EXIT_FAILURE); } 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) errx(EX_OSERR, "out of memory"); ca->ch = ch; ca->val = argstr; LIST_INSERT_HEAD(_args, ca, list); return ca; }