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 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. 13 * 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 24 * SUCH DAMAGE. 25 * 26 * $Id: pw.c,v 1.1.1.2 1996/12/09 23:55:20 joerg Exp $ 27 */ 28 29 #include "pw.h" 30 31 static char *progname = "pw"; 32 33 const char *Modes[] = {"add", "del", "mod", "show", "next", NULL}; 34 const char *Which[] = {"user", "group", NULL}; 35 static const char *Combo1[] = { 36 "useradd", "userdel", "usermod", "usershow", "usernext", 37 "groupadd", "groupdel", "groupmod", "groupshow", "groupnext", 38 NULL}; 39 static const char *Combo2[] = { 40 "adduser", "deluser", "moduser", "showuser", "nextuser", 41 "addgroup", "delgroup", "modgroup", "showgroup", "nextgroup", 42 NULL}; 43 44 static struct cargs arglist; 45 46 static int getindex(const char *words[], const char *word); 47 static void cmdhelp(int mode, int which); 48 49 50 int 51 main(int argc, char *argv[]) 52 { 53 int ch; 54 int mode = -1; 55 int which = -1; 56 struct userconf *cnf; 57 58 static const char *opts[W_NUM][M_NUM] = 59 { 60 { /* user */ 61 "C:qn:u:c:d:e:p:g:G:mk:s:oL:i:w:h:Db:NP", 62 "C:qn:u:r", 63 "C:qn:u:c:d:e:p:g:G:mk:s:w:L:h:FNP", 64 "C:qn:u:FPa", 65 "C:q" 66 }, 67 { /* grp */ 68 "C:qn:g:h:M:pNP", 69 "C:qn:g:", 70 "C:qn:g:l:h:FM:m:NP", 71 "C:qn:g:FPa", 72 "C:q" 73 } 74 }; 75 76 static int (*funcs[W_NUM]) (struct userconf * _cnf, int _mode, struct cargs * _args) = 77 { /* Request handlers */ 78 pw_user, 79 pw_group 80 }; 81 82 umask(0); /* We wish to handle this manually */ 83 progname = strrchr(argv[0], '/'); 84 if (progname != NULL) 85 ++progname; 86 else 87 progname = argv[0]; 88 89 LIST_INIT(&arglist); 90 91 /* 92 * Break off the first couple of words to determine what exactly 93 * we're being asked to do 94 */ 95 while (argc > 1 && *argv[1] != '-') { 96 int tmp; 97 98 if ((tmp = getindex(Modes, argv[1])) != -1) 99 mode = tmp; 100 else if ((tmp = getindex(Which, argv[1])) != -1) 101 which = tmp; 102 else if ((tmp = getindex(Combo1, argv[1])) != -1 || (tmp = getindex(Combo2, argv[1])) != -1) { 103 which = tmp / M_NUM; 104 mode = tmp % M_NUM; 105 } else if (strcmp(argv[1], "help") == 0) 106 cmdhelp(mode, which); 107 else if (which != -1 && mode != -1 && arglist.lh_first == NULL) 108 addarg(&arglist, 'n', argv[1]); 109 else 110 cmderr(EX_USAGE, "Unknown keyword `%s'\n", argv[1]); 111 ++argv; 112 --argc; 113 } 114 115 /* 116 * Bail out unless the user is specific! 117 */ 118 if (mode == -1 || which == -1) 119 cmdhelp(mode, which); 120 121 /* 122 * We know which mode we're in and what we're about to do, so now 123 * let's dispatch the remaining command line args in a genric way. 124 */ 125 argv[0] = progname; /* Preserve this */ 126 optarg = NULL; 127 128 while ((ch = getopt(argc, argv, opts[which][mode])) != -1) { 129 if (ch == '?') 130 cmderr(EX_USAGE, NULL); 131 else 132 addarg(&arglist, ch, optarg); 133 optarg = NULL; 134 } 135 136 /* 137 * Must be root to attempt an update 138 */ 139 if (getuid() != 0 && mode != M_PRINT && mode != M_NEXT && getarg(&arglist, 'N')==NULL) 140 cmderr(EX_NOPERM, "you must be root to run this program\n"); 141 142 /* 143 * We should immediately look for the -q 'quiet' switch so that we 144 * don't bother with extraneous errors 145 */ 146 if (getarg(&arglist, 'q') != NULL) 147 freopen("/dev/null", "w", stderr); 148 149 /* 150 * Now, let's do the common initialisation 151 */ 152 cnf = read_userconfig(getarg(&arglist, 'C') ? getarg(&arglist, 'C')->val : NULL); 153 return funcs[which] (cnf, mode, &arglist); 154 } 155 156 static int 157 getindex(const char *words[], const char *word) 158 { 159 int i = 0; 160 161 while (words[i]) { 162 if (strcmp(words[i], word) == 0) 163 return i; 164 i++; 165 } 166 return -1; 167 } 168 169 170 /* 171 * This is probably an overkill for a cmdline help system, but it reflects 172 * the complexity of the command line. 173 */ 174 175 static void 176 banner(void) 177 { 178 fprintf(stderr, "%s: ", progname); 179 } 180 181 void 182 cmderr(int ec, char const * fmt,...) 183 { 184 if (fmt != NULL) { 185 va_list argp; 186 187 banner(); 188 va_start(argp, fmt); 189 vfprintf(stderr, fmt, argp); 190 va_end(argp); 191 } 192 exit(ec); 193 } 194 195 static void 196 cmdhelp(int mode, int which) 197 { 198 banner(); 199 if (which == -1) 200 fprintf(stderr, "usage: %s [user|group] [add|del|mod|show|next] [ help | switches/values ]\n", progname); 201 else if (mode == -1) 202 fprintf(stderr, "usage: %s %s [add|del|mod|show|next] [ help | switches/values ]\n", progname, Which[which]); 203 else { 204 205 /* 206 * We need to give mode specific help 207 */ 208 static const char *help[W_NUM][M_NUM] = 209 { 210 { 211 "usage: %s useradd [name] [switches]\n" 212 "\t-C config configuration file\n" 213 "\t-q quiet operation\n" 214 " Adding users:\n" 215 "\t-n name login name\n" 216 "\t-u uid user id\n" 217 "\t-c comment user name/comment\n" 218 "\t-d directory home directory\n" 219 "\t-e date account expiry date\n" 220 "\t-p date password expiry date\n" 221 "\t-g grp initial group\n" 222 "\t-G grp1,grp2 additional groups\n" 223 "\t-m [ -k dir ] create and set up home\n" 224 "\t-s shell name of login shell\n" 225 "\t-o duplicate uid ok\n" 226 "\t-L class user class\n" 227 "\t-h fd read password on fd\n" 228 "\t-N no update\n" 229 " Setting defaults:\n" 230 "\t-D set user defaults\n" 231 "\t-b dir default home root dir\n" 232 "\t-e period default expiry period\n" 233 "\t-p period default password change period\n" 234 "\t-g group default group\n" 235 "\t-G grp1,grp2 additional groups\n" 236 "\t-L class default user class\n" 237 "\t-k dir default home skeleton\n" 238 "\t-u min,max set min,max uids\n" 239 "\t-i min,max set min,max gids\n" 240 "\t-w method set default password method\n" 241 "\t-s shell default shell\n", 242 "usage: %s userdel [uid|name] [switches]\n" 243 "\t-n name login name\n" 244 "\t-u uid user id\n" 245 "\t-r remove home & contents\n", 246 "usage: %s usermod [uid|name] [switches]\n" 247 "\t-C config configuration file\n" 248 "\t-q quiet operation\n" 249 "\t-F force add if no user\n" 250 "\t-n name login name\n" 251 "\t-u uid user id\n" 252 "\t-c comment user name/comment\n" 253 "\t-d directory home directory\n" 254 "\t-e date account expiry date\n" 255 "\t-p date password expiry date\n" 256 "\t-g grp initial group\n" 257 "\t-G grp1,grp2 additional groups\n" 258 "\t-l name new login name\n" 259 "\t-L class user class\n" 260 "\t-m [ -k dir ] create and set up home\n" 261 "\t-s shell name of login shell\n" 262 "\t-w method set new password using method\n" 263 "\t-h fd read password on fd\n" 264 "\t-N no update\n", 265 "usage: %s usershow [uid|name] [switches]\n" 266 "\t-n name login name\n" 267 "\t-u uid user id\n" 268 "\t-F force print\n" 269 "\t-P prettier format\n" 270 "\t-a print all users\n", 271 "usage: %s usernext [switches]\n" 272 "\t-C config configuration file\n" 273 }, 274 { 275 "usage: %s groupadd [group|gid] [switches]\n" 276 "\t-C config configuration file\n" 277 "\t-q quiet operation\n" 278 "\t-n group group name\n" 279 "\t-g gid group id\n" 280 "\t-M usr1,usr2 add users as group members\n" 281 "\t-o duplicate gid ok\n" 282 "\t-N no update\n", 283 "usage: %s groupdel [group|gid] [switches]\n" 284 "\t-n name group name\n" 285 "\t-g gid group id\n", 286 "usage: %s groupmod [group|gid] [switches]\n" 287 "\t-C config configuration file\n" 288 "\t-q quiet operation\n" 289 "\t-F force add if not exists\n" 290 "\t-n name group name\n" 291 "\t-g gid group id\n" 292 "\t-M usr1,usr2 replaces users as group members\n" 293 "\t-m usr1,usr2 add users as group members\n" 294 "\t-l name new group name\n" 295 "\t-N no update\n", 296 "usage: %s groupshow [group|gid] [switches]\n" 297 "\t-n name group name\n" 298 "\t-g gid group id\n" 299 "\t-F force print\n" 300 "\t-P prettier format\n" 301 "\t-a print all accounting groups\n", 302 "usage: %s groupnext [switches]\n" 303 "\t-C config configuration file\n" 304 } 305 }; 306 307 fprintf(stderr, help[which][mode], progname); 308 } 309 exit(EXIT_FAILURE); 310 } 311 312 struct carg * 313 getarg(struct cargs * _args, int ch) 314 { 315 struct carg *c = _args->lh_first; 316 317 while (c != NULL && c->ch != ch) 318 c = c->list.le_next; 319 return c; 320 } 321 322 struct carg * 323 addarg(struct cargs * _args, int ch, char *argstr) 324 { 325 struct carg *ca = malloc(sizeof(struct carg)); 326 327 if (ca == NULL) 328 cmderr(EX_OSERR, "Abort - out of memory\n"); 329 ca->ch = ch; 330 ca->val = argstr; 331 LIST_INSERT_HEAD(_args, ca, list); 332 return ca; 333 } 334