pw_user.c revision 252688
1227569Sphilip/*- 2283514Sarybchik * Copyright (C) 1996 3283514Sarybchik * David L. Nugent. All rights reserved. 4227569Sphilip * 5227569Sphilip * Redistribution and use in source and binary forms, with or without 6283514Sarybchik * modification, are permitted provided that the following conditions 7227569Sphilip * are met: 8283514Sarybchik * 1. Redistributions of source code must retain the above copyright 9283514Sarybchik * notice, this list of conditions and the following disclaimer. 10283514Sarybchik * 2. Redistributions in binary form must reproduce the above copyright 11283514Sarybchik * notice, this list of conditions and the following disclaimer in the 12283514Sarybchik * documentation and/or other materials provided with the distribution. 13283514Sarybchik * 14283514Sarybchik * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND 15283514Sarybchik * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16283514Sarybchik * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17283514Sarybchik * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE 18283514Sarybchik * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19283514Sarybchik * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20283514Sarybchik * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21283514Sarybchik * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22283514Sarybchik * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23283514Sarybchik * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24283514Sarybchik * SUCH DAMAGE. 25283514Sarybchik * 26283514Sarybchik */ 27283514Sarybchik 28283514Sarybchik#ifndef lint 29227569Sphilipstatic const char rcsid[] = 30227569Sphilip "$FreeBSD: head/usr.sbin/pw/pw_user.c 252688 2013-07-04 07:59:11Z des $"; 31228078Sphilip#endif /* not lint */ 32228078Sphilip 33228078Sphilip#include <ctype.h> 34227569Sphilip#include <err.h> 35227569Sphilip#include <fcntl.h> 36293814Sarybchik#include <sys/param.h> 37283514Sarybchik#include <dirent.h> 38293814Sarybchik#include <paths.h> 39227569Sphilip#include <termios.h> 40227569Sphilip#include <sys/types.h> 41227569Sphilip#include <sys/time.h> 42227569Sphilip#include <sys/resource.h> 43227569Sphilip#include <unistd.h> 44227569Sphilip#include <login_cap.h> 45227569Sphilip#include <pwd.h> 46227569Sphilip#include <grp.h> 47227569Sphilip#include <libutil.h> 48227569Sphilip#include "pw.h" 49227569Sphilip#include "bitmap.h" 50283514Sarybchik 51283514Sarybchik#define LOGNAMESIZE (MAXLOGNAME-1) 52283514Sarybchik 53283514Sarybchikstatic char locked_str[] = "*LOCKED*"; 54283514Sarybchik 55283514Sarybchikstatic int print_user(struct passwd * pwd, int pretty, int v7); 56283514Sarybchikstatic uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args); 57283514Sarybchikstatic uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer); 58291436Sarybchikstatic time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args); 59283514Sarybchikstatic time_t pw_exppolicy(struct userconf * cnf, struct cargs * args); 60283514Sarybchikstatic char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user); 61283514Sarybchikstatic char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell); 62283514Sarybchikstatic char *pw_password(struct userconf * cnf, struct cargs * args, char const * user); 63283514Sarybchikstatic char *shell_path(char const * path, char *shells[], char *sh); 64283514Sarybchikstatic void rmat(uid_t uid); 65283514Sarybchikstatic void rmopie(char const * name); 66291436Sarybchik 67283514Sarybchik/*- 68283514Sarybchik * -C config configuration file 69283514Sarybchik * -q quiet operation 70283514Sarybchik * -n name login name 71283514Sarybchik * -u uid user id 72283514Sarybchik * -c comment user name/comment 73283514Sarybchik * -d directory home directory 74283514Sarybchik * -e date account expiry date 75283514Sarybchik * -p date password expiry date 76283514Sarybchik * -g grp primary group 77283514Sarybchik * -G grp1,grp2 additional groups 78283514Sarybchik * -m [ -k dir ] create and set up home 79291436Sarybchik * -s shell name of login shell 80283514Sarybchik * -o duplicate uid ok 81283514Sarybchik * -L class user class 82283514Sarybchik * -l name new login name 83283514Sarybchik * -h fd password filehandle 84283514Sarybchik * -H fd encrypted password filehandle 85283514Sarybchik * -F force print or add 86283514Sarybchik * Setting defaults: 87283514Sarybchik * -D set user defaults 88283514Sarybchik * -b dir default home root dir 89283514Sarybchik * -e period default expiry period 90283514Sarybchik * -p period default password change period 91283514Sarybchik * -g group default group 92283514Sarybchik * -G grp1,grp2.. default additional groups 93283514Sarybchik * -L class default login class 94283514Sarybchik * -k dir default home skeleton 95283514Sarybchik * -s shell default shell 96291436Sarybchik * -w method default password method 97283514Sarybchik */ 98283514Sarybchik 99283514Sarybchikint 100283514Sarybchikpw_user(struct userconf * cnf, int mode, struct cargs * args) 101283514Sarybchik{ 102283514Sarybchik int rc, edited = 0; 103283514Sarybchik char *p = NULL; 104283514Sarybchik char *passtmp; 105283514Sarybchik struct carg *a_name; 106283514Sarybchik struct carg *a_uid; 107283514Sarybchik struct carg *arg; 108283514Sarybchik struct passwd *pwd = NULL; 109283514Sarybchik struct group *grp; 110283514Sarybchik struct stat st; 111283514Sarybchik char line[_PASSWORD_LEN+1]; 112283514Sarybchik FILE *fp; 113283514Sarybchik char *dmode_c; 114283514Sarybchik void *set = NULL; 115283514Sarybchik 116283514Sarybchik static struct passwd fakeuser = 117283514Sarybchik { 118283514Sarybchik NULL, 119283514Sarybchik "*", 120283514Sarybchik -1, 121283514Sarybchik -1, 122283514Sarybchik 0, 123283514Sarybchik "", 124283514Sarybchik "User &", 125283514Sarybchik "/nonexistent", 126283514Sarybchik "/bin/sh", 127283514Sarybchik 0 128283514Sarybchik#if defined(__FreeBSD__) 129283514Sarybchik ,0 130283514Sarybchik#endif 131283514Sarybchik }; 132283514Sarybchik 133283514Sarybchik 134283514Sarybchik /* 135283514Sarybchik * With M_NEXT, we only need to return the 136283514Sarybchik * next uid to stdout 137283514Sarybchik */ 138283514Sarybchik if (mode == M_NEXT) 139283514Sarybchik { 140283514Sarybchik uid_t next = pw_uidpolicy(cnf, args); 141293752Sarybchik if (getarg(args, 'q')) 142293752Sarybchik return next; 143293752Sarybchik printf("%ld:", (long)next); 144293752Sarybchik pw_group(cnf, mode, args); 145293752Sarybchik return EXIT_SUCCESS; 146293752Sarybchik } 147293752Sarybchik 148293752Sarybchik /* 149293752Sarybchik * We can do all of the common legwork here 150283514Sarybchik */ 151293752Sarybchik 152283514Sarybchik if ((arg = getarg(args, 'b')) != NULL) { 153283514Sarybchik cnf->home = arg->val; 154293752Sarybchik } 155283514Sarybchik 156283514Sarybchik if ((arg = getarg(args, 'M')) != NULL) { 157291436Sarybchik dmode_c = arg->val; 158227569Sphilip if ((set = setmode(dmode_c)) == NULL) 159227569Sphilip errx(EX_DATAERR, "invalid directory creation mode '%s'", 160227569Sphilip dmode_c); 161283514Sarybchik cnf->homemode = getmode(set, _DEF_DIRMODE); 162291436Sarybchik free(set); 163227569Sphilip } 164227569Sphilip 165227569Sphilip /* 166227569Sphilip * If we'll need to use it or we're updating it, 167227569Sphilip * then create the base home directory if necessary 168227569Sphilip */ 169227569Sphilip if (arg != NULL || getarg(args, 'm') != NULL) { 170227569Sphilip int l = strlen(cnf->home); 171227569Sphilip 172283514Sarybchik if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 173283514Sarybchik cnf->home[--l] = '\0'; 174283514Sarybchik 175283514Sarybchik if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 176283514Sarybchik errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 177283514Sarybchik 178283514Sarybchik if (stat(cnf->home, &st) == -1) { 179283514Sarybchik char dbuf[MAXPATHLEN]; 180283514Sarybchik 181283514Sarybchik /* 182283514Sarybchik * This is a kludge especially for Joerg :) 183283514Sarybchik * If the home directory would be created in the root partition, then 184283514Sarybchik * we really create it under /usr which is likely to have more space. 185283514Sarybchik * But we create a symlink from cnf->home -> "/usr" -> cnf->home 186283514Sarybchik */ 187293752Sarybchik if (strchr(cnf->home+1, '/') == NULL) { 188283514Sarybchik strcpy(dbuf, "/usr"); 189283514Sarybchik strncat(dbuf, cnf->home, MAXPATHLEN-5); 190283514Sarybchik if (mkdir(dbuf, _DEF_DIRMODE) != -1 || errno == EEXIST) { 191293752Sarybchik chown(dbuf, 0, 0); 192293752Sarybchik /* 193293752Sarybchik * Skip first "/" and create symlink: 194293752Sarybchik * /home -> usr/home 195293752Sarybchik */ 196293752Sarybchik symlink(dbuf+1, cnf->home); 197283514Sarybchik } 198283514Sarybchik /* If this falls, fall back to old method */ 199283514Sarybchik } 200283514Sarybchik strlcpy(dbuf, cnf->home, sizeof(dbuf)); 201283514Sarybchik p = dbuf; 202283514Sarybchik if (stat(dbuf, &st) == -1) { 203227569Sphilip while ((p = strchr(p + 1, '/')) != NULL) { 204227569Sphilip *p = '\0'; 205283514Sarybchik if (stat(dbuf, &st) == -1) { 206283514Sarybchik if (mkdir(dbuf, _DEF_DIRMODE) == -1) 207283514Sarybchik goto direrr; 208283514Sarybchik chown(dbuf, 0, 0); 209283514Sarybchik } else if (!S_ISDIR(st.st_mode)) 210283514Sarybchik errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 211283514Sarybchik *p = '/'; 212283514Sarybchik } 213283514Sarybchik } 214283514Sarybchik if (stat(dbuf, &st) == -1) { 215283514Sarybchik if (mkdir(dbuf, _DEF_DIRMODE) == -1) { 216291436Sarybchik direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); 217283514Sarybchik } 218283514Sarybchik chown(dbuf, 0, 0); 219283514Sarybchik } 220283514Sarybchik } else if (!S_ISDIR(st.st_mode)) 221283514Sarybchik errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 222283514Sarybchik } 223283514Sarybchik 224283514Sarybchik if ((arg = getarg(args, 'e')) != NULL) 225283514Sarybchik cnf->expire_days = atoi(arg->val); 226283514Sarybchik 227283514Sarybchik if ((arg = getarg(args, 'y')) != NULL) 228283514Sarybchik cnf->nispasswd = arg->val; 229283514Sarybchik 230283514Sarybchik if ((arg = getarg(args, 'p')) != NULL && arg->val) 231283514Sarybchik cnf->password_days = atoi(arg->val); 232283514Sarybchik 233283514Sarybchik if ((arg = getarg(args, 'g')) != NULL) { 234283514Sarybchik if (!*(p = arg->val)) /* Handle empty group list specially */ 235283514Sarybchik cnf->default_group = ""; 236283514Sarybchik else { 237283514Sarybchik if ((grp = GETGRNAM(p)) == NULL) { 238283514Sarybchik if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 239283514Sarybchik errx(EX_NOUSER, "group `%s' does not exist", p); 240283514Sarybchik } 241283514Sarybchik cnf->default_group = newstr(grp->gr_name); 242283514Sarybchik } 243291436Sarybchik } 244283514Sarybchik if ((arg = getarg(args, 'L')) != NULL) 245283514Sarybchik cnf->default_class = pw_checkname((u_char *)arg->val, 0); 246283514Sarybchik 247283514Sarybchik if ((arg = getarg(args, 'G')) != NULL && arg->val) { 248283514Sarybchik int i = 0; 249283514Sarybchik 250283514Sarybchik for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 251283514Sarybchik if ((grp = GETGRNAM(p)) == NULL) { 252283514Sarybchik if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 253283514Sarybchik errx(EX_NOUSER, "group `%s' does not exist", p); 254283514Sarybchik } 255291436Sarybchik if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 256283514Sarybchik cnf->groups[i++] = newstr(grp->gr_name); 257283514Sarybchik } 258283514Sarybchik while (i < cnf->numgroups) 259283514Sarybchik cnf->groups[i++] = NULL; 260283514Sarybchik } 261283514Sarybchik 262283514Sarybchik if ((arg = getarg(args, 'k')) != NULL) { 263283514Sarybchik if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) 264283514Sarybchik errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); 265283514Sarybchik } 266283514Sarybchik 267283514Sarybchik if ((arg = getarg(args, 's')) != NULL) 268283514Sarybchik cnf->shell_default = arg->val; 269283514Sarybchik 270283514Sarybchik if ((arg = getarg(args, 'w')) != NULL) 271283514Sarybchik cnf->default_password = boolean_val(arg->val, cnf->default_password); 272283514Sarybchik if (mode == M_ADD && getarg(args, 'D')) { 273283514Sarybchik if (getarg(args, 'n') != NULL) 274283514Sarybchik errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 275283514Sarybchik if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 276283514Sarybchik if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 277283514Sarybchik cnf->min_uid = 1000; 278283514Sarybchik if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 279283514Sarybchik cnf->max_uid = 32000; 280283514Sarybchik } 281283514Sarybchik if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 282283514Sarybchik if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 283283514Sarybchik cnf->min_gid = 1000; 284283514Sarybchik if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 285283514Sarybchik cnf->max_gid = 32000; 286283514Sarybchik } 287291436Sarybchik 288283514Sarybchik arg = getarg(args, 'C'); 289283514Sarybchik if (write_userconfig(arg ? arg->val : NULL)) 290283514Sarybchik return EXIT_SUCCESS; 291283514Sarybchik warn("config update"); 292283514Sarybchik return EX_IOERR; 293283514Sarybchik } 294283514Sarybchik 295283514Sarybchik if (mode == M_PRINT && getarg(args, 'a')) { 296283514Sarybchik int pretty = getarg(args, 'P') != NULL; 297283514Sarybchik int v7 = getarg(args, '7') != NULL; 298283514Sarybchik SETPWENT(); 299283514Sarybchik while ((pwd = GETPWENT()) != NULL) 300283514Sarybchik print_user(pwd, pretty, v7); 301283514Sarybchik ENDPWENT(); 302283514Sarybchik return EXIT_SUCCESS; 303283514Sarybchik } 304283514Sarybchik 305283514Sarybchik if ((a_name = getarg(args, 'n')) != NULL) 306283514Sarybchik pwd = GETPWNAM(pw_checkname((u_char *)a_name->val, 0)); 307283514Sarybchik a_uid = getarg(args, 'u'); 308283514Sarybchik 309291436Sarybchik if (a_uid == NULL) { 310283514Sarybchik if (a_name == NULL) 311283514Sarybchik errx(EX_DATAERR, "user name or id required"); 312283514Sarybchik 313283514Sarybchik /* 314283514Sarybchik * Determine whether 'n' switch is name or uid - we don't 315283514Sarybchik * really don't really care which we have, but we need to 316291436Sarybchik * know. 317283514Sarybchik */ 318283514Sarybchik if (mode != M_ADD && pwd == NULL 319283514Sarybchik && strspn(a_name->val, "0123456789") == strlen(a_name->val) 320283514Sarybchik && *a_name->val) { 321283514Sarybchik (a_uid = a_name)->ch = 'u'; 322283514Sarybchik a_name = NULL; 323283514Sarybchik } 324283514Sarybchik } 325283514Sarybchik 326283514Sarybchik /* 327283514Sarybchik * Update, delete & print require that the user exists 328283514Sarybchik */ 329283514Sarybchik if (mode == M_UPDATE || mode == M_DELETE || 330283514Sarybchik mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) { 331283514Sarybchik 332283514Sarybchik if (a_name == NULL && pwd == NULL) /* Try harder */ 333291436Sarybchik pwd = GETPWUID(atoi(a_uid->val)); 334283514Sarybchik 335283514Sarybchik if (pwd == NULL) { 336283514Sarybchik if (mode == M_PRINT && getarg(args, 'F')) { 337283514Sarybchik fakeuser.pw_name = a_name ? a_name->val : "nouser"; 338283514Sarybchik fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1; 339283514Sarybchik return print_user(&fakeuser, 340283514Sarybchik getarg(args, 'P') != NULL, 341283514Sarybchik getarg(args, '7') != NULL); 342283514Sarybchik } 343283514Sarybchik if (a_name == NULL) 344283514Sarybchik errx(EX_NOUSER, "no such uid `%s'", a_uid->val); 345283514Sarybchik errx(EX_NOUSER, "no such user `%s'", a_name->val); 346283514Sarybchik } 347283514Sarybchik 348283514Sarybchik if (a_name == NULL) /* May be needed later */ 349283514Sarybchik a_name = addarg(args, 'n', newstr(pwd->pw_name)); 350283514Sarybchik 351283514Sarybchik /* 352283514Sarybchik * The M_LOCK and M_UNLOCK functions simply add or remove 353283514Sarybchik * a "*LOCKED*" prefix from in front of the password to 354283514Sarybchik * prevent it decoding correctly, and therefore prevents 355283514Sarybchik * access. Of course, this only prevents access via 356283514Sarybchik * password authentication (not ssh, kerberos or any 357283514Sarybchik * other method that does not use the UNIX password) but 358283514Sarybchik * that is a known limitation. 359283514Sarybchik */ 360283514Sarybchik 361283514Sarybchik if (mode == M_LOCK) { 362283514Sarybchik if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) 363283514Sarybchik errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 364283514Sarybchik passtmp = malloc(strlen(pwd->pw_passwd) + sizeof(locked_str)); 365283514Sarybchik if (passtmp == NULL) /* disaster */ 366283514Sarybchik errx(EX_UNAVAILABLE, "out of memory"); 367283514Sarybchik strcpy(passtmp, locked_str); 368283514Sarybchik strcat(passtmp, pwd->pw_passwd); 369283514Sarybchik pwd->pw_passwd = passtmp; 370283514Sarybchik edited = 1; 371283514Sarybchik } else if (mode == M_UNLOCK) { 372283514Sarybchik if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) 373283514Sarybchik errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 374283514Sarybchik pwd->pw_passwd += sizeof(locked_str)-1; 375283514Sarybchik edited = 1; 376283514Sarybchik } else if (mode == M_DELETE) { 377283514Sarybchik /* 378283514Sarybchik * Handle deletions now 379283514Sarybchik */ 380227569Sphilip char file[MAXPATHLEN]; 381283514Sarybchik char home[MAXPATHLEN]; 382283514Sarybchik uid_t uid = pwd->pw_uid; 383283514Sarybchik 384283514Sarybchik if (strcmp(pwd->pw_name, "root") == 0) 385283514Sarybchik errx(EX_DATAERR, "cannot remove user 'root'"); 386283514Sarybchik 387283514Sarybchik if (!PWALTDIR()) { 388283514Sarybchik /* 389283514Sarybchik * Remove opie record from /etc/opiekeys 390283514Sarybchik */ 391283514Sarybchik 392283514Sarybchik rmopie(pwd->pw_name); 393283514Sarybchik 394283514Sarybchik /* 395283514Sarybchik * Remove crontabs 396283514Sarybchik */ 397283514Sarybchik snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 398283514Sarybchik if (access(file, F_OK) == 0) { 399283514Sarybchik sprintf(file, "crontab -u %s -r", pwd->pw_name); 400283514Sarybchik system(file); 401283514Sarybchik } 402283514Sarybchik } 403283514Sarybchik /* 404283514Sarybchik * Save these for later, since contents of pwd may be 405283514Sarybchik * invalidated by deletion 406283514Sarybchik */ 407283514Sarybchik sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 408283514Sarybchik strlcpy(home, pwd->pw_dir, sizeof(home)); 409283514Sarybchik 410283514Sarybchik rc = delpwent(pwd); 411283514Sarybchik if (rc == -1) 412283514Sarybchik err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 413283514Sarybchik else if (rc != 0) { 414283514Sarybchik warn("passwd update"); 415283514Sarybchik return EX_IOERR; 416283514Sarybchik } 417291436Sarybchik 418283514Sarybchik if (cnf->nispasswd && *cnf->nispasswd=='/') { 419283514Sarybchik rc = delnispwent(cnf->nispasswd, a_name->val); 420283514Sarybchik if (rc == -1) 421283514Sarybchik warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); 422283514Sarybchik else if (rc != 0) 423283514Sarybchik warn("WARNING: NIS passwd update"); 424291436Sarybchik /* non-fatal */ 425283514Sarybchik } 426283514Sarybchik 427283514Sarybchik grp = GETGRNAM(a_name->val); 428283514Sarybchik if (grp != NULL && *grp->gr_mem == NULL) 429283514Sarybchik delgrent(GETGRNAM(a_name->val)); 430283514Sarybchik SETGRENT(); 431283514Sarybchik while ((grp = GETGRENT()) != NULL) { 432283514Sarybchik int i; 433283514Sarybchik char group[MAXLOGNAME]; 434291436Sarybchik for (i = 0; grp->gr_mem[i] != NULL; i++) { 435283514Sarybchik if (!strcmp(grp->gr_mem[i], a_name->val)) { 436283514Sarybchik while (grp->gr_mem[i] != NULL) { 437283514Sarybchik grp->gr_mem[i] = grp->gr_mem[i+1]; 438283514Sarybchik } 439283514Sarybchik strlcpy(group, grp->gr_name, MAXLOGNAME); 440283514Sarybchik chggrent(group, grp); 441283514Sarybchik } 442283514Sarybchik } 443283514Sarybchik } 444283514Sarybchik ENDGRENT(); 445283514Sarybchik 446283514Sarybchik pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid); 447283514Sarybchik 448283514Sarybchik if (!PWALTDIR()) { 449283514Sarybchik /* 450283514Sarybchik * Remove mail file 451283514Sarybchik */ 452283514Sarybchik remove(file); 453283514Sarybchik 454283514Sarybchik /* 455283514Sarybchik * Remove at jobs 456291436Sarybchik */ 457283514Sarybchik if (getpwuid(uid) == NULL) 458283514Sarybchik rmat(uid); 459283514Sarybchik 460283514Sarybchik /* 461283514Sarybchik * Remove home directory and contents 462283514Sarybchik */ 463227569Sphilip if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) { 464227569Sphilip if (stat(home, &st) != -1) { 465227569Sphilip rm_r(home, uid); 466227569Sphilip pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved", 467227569Sphilip a_name->val, (long) uid, home, 468227569Sphilip stat(home, &st) == -1 ? "" : "not completely "); 469227569Sphilip } 470227569Sphilip } 471227569Sphilip } 472227569Sphilip return EXIT_SUCCESS; 473227569Sphilip } else if (mode == M_PRINT) 474227569Sphilip return print_user(pwd, 475283514Sarybchik getarg(args, 'P') != NULL, 476227569Sphilip getarg(args, '7') != NULL); 477227569Sphilip 478227569Sphilip /* 479227569Sphilip * The rest is edit code 480227569Sphilip */ 481227569Sphilip if ((arg = getarg(args, 'l')) != NULL) { 482227569Sphilip if (strcmp(pwd->pw_name, "root") == 0) 483227569Sphilip errx(EX_DATAERR, "can't rename `root' account"); 484227569Sphilip pwd->pw_name = pw_checkname((u_char *)arg->val, 0); 485227569Sphilip edited = 1; 486227569Sphilip } 487278839Sarybchik 488278839Sarybchik if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) { 489227569Sphilip pwd->pw_uid = (uid_t) atol(arg->val); 490227569Sphilip edited = 1; 491227569Sphilip if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 492227569Sphilip errx(EX_DATAERR, "can't change uid of `root' account"); 493227569Sphilip if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 494227569Sphilip warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 495227569Sphilip } 496227569Sphilip 497227569Sphilip if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 498227569Sphilip gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 499227569Sphilip if (newgid != pwd->pw_gid) { 500293806Sarybchik edited = 1; 501278839Sarybchik pwd->pw_gid = newgid; 502278839Sarybchik } 503227569Sphilip } 504227569Sphilip 505227569Sphilip if ((arg = getarg(args, 'p')) != NULL) { 506227569Sphilip if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 507227569Sphilip if (pwd->pw_change != 0) { 508227569Sphilip pwd->pw_change = 0; 509227569Sphilip edited = 1; 510227569Sphilip } 511227569Sphilip } 512227569Sphilip else { 513227569Sphilip time_t now = time(NULL); 514227569Sphilip time_t expire = parse_date(now, arg->val); 515293806Sarybchik 516227569Sphilip if (pwd->pw_change != expire) { 517227569Sphilip pwd->pw_change = expire; 518227569Sphilip edited = 1; 519227569Sphilip } 520227569Sphilip } 521227569Sphilip } 522227569Sphilip 523227569Sphilip if ((arg = getarg(args, 'e')) != NULL) { 524227569Sphilip if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 525227569Sphilip if (pwd->pw_expire != 0) { 526227569Sphilip pwd->pw_expire = 0; 527227569Sphilip edited = 1; 528227569Sphilip } 529227569Sphilip } 530227569Sphilip else { 531227569Sphilip time_t now = time(NULL); 532227569Sphilip time_t expire = parse_date(now, arg->val); 533227569Sphilip 534227569Sphilip if (pwd->pw_expire != expire) { 535227569Sphilip pwd->pw_expire = expire; 536227569Sphilip edited = 1; 537227569Sphilip } 538227569Sphilip } 539227569Sphilip } 540227569Sphilip 541227569Sphilip if ((arg = getarg(args, 's')) != NULL) { 542227569Sphilip char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 543227569Sphilip if (shell == NULL) 544227569Sphilip shell = ""; 545227569Sphilip if (strcmp(shell, pwd->pw_shell) != 0) { 546227569Sphilip pwd->pw_shell = shell; 547227569Sphilip edited = 1; 548227569Sphilip } 549227569Sphilip } 550227569Sphilip 551227569Sphilip if (getarg(args, 'L')) { 552227569Sphilip if (cnf->default_class == NULL) 553227569Sphilip cnf->default_class = ""; 554227569Sphilip if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 555227569Sphilip pwd->pw_class = cnf->default_class; 556227569Sphilip edited = 1; 557227569Sphilip } 558227569Sphilip } 559227569Sphilip 560227569Sphilip if ((arg = getarg(args, 'd')) != NULL) { 561227569Sphilip if (strcmp(pwd->pw_dir, arg->val)) 562227569Sphilip edited = 1; 563227569Sphilip if (stat(pwd->pw_dir = arg->val, &st) == -1) { 564227569Sphilip if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 565283514Sarybchik warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 566227569Sphilip } else if (!S_ISDIR(st.st_mode)) 567227569Sphilip warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 568227569Sphilip } 569227569Sphilip 570227569Sphilip if ((arg = getarg(args, 'w')) != NULL && 571227569Sphilip getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) { 572227569Sphilip login_cap_t *lc; 573227569Sphilip 574227569Sphilip lc = login_getpwclass(pwd); 575227569Sphilip if (lc == NULL || 576293806Sarybchik login_setcryptfmt(lc, "sha512", NULL) == NULL) 577227569Sphilip warn("setting crypt(3) format"); 578227569Sphilip login_close(lc); 579293806Sarybchik pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 580227569Sphilip edited = 1; 581227569Sphilip } 582227569Sphilip 583227569Sphilip } else { 584227569Sphilip login_cap_t *lc; 585227569Sphilip 586227569Sphilip /* 587227569Sphilip * Add code 588227569Sphilip */ 589227569Sphilip 590227569Sphilip if (a_name == NULL) /* Required */ 591227569Sphilip errx(EX_DATAERR, "login name required"); 592227569Sphilip else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ 593227569Sphilip errx(EX_DATAERR, "login name `%s' already exists", a_name->val); 594293806Sarybchik 595227569Sphilip /* 596227569Sphilip * Now, set up defaults for a new user 597293806Sarybchik */ 598227569Sphilip pwd = &fakeuser; 599227569Sphilip pwd->pw_name = a_name->val; 600227569Sphilip pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 601227569Sphilip pwd->pw_uid = pw_uidpolicy(cnf, args); 602227569Sphilip pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid); 603227569Sphilip pwd->pw_change = pw_pwdpolicy(cnf, args); 604227569Sphilip pwd->pw_expire = pw_exppolicy(cnf, args); 605227569Sphilip pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 606227569Sphilip pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 607227569Sphilip lc = login_getpwclass(pwd); 608227569Sphilip if (lc == NULL || login_setcryptfmt(lc, "md5", NULL) == NULL) 609227569Sphilip warn("setting crypt(3) format"); 610227569Sphilip login_close(lc); 611227569Sphilip pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 612227569Sphilip edited = 1; 613227569Sphilip 614227569Sphilip if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 615227569Sphilip warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 616227569Sphilip } 617227569Sphilip 618227569Sphilip /* 619227569Sphilip * Shared add/edit code 620227569Sphilip */ 621227569Sphilip if ((arg = getarg(args, 'c')) != NULL) { 622227569Sphilip char *gecos = pw_checkname((u_char *)arg->val, 1); 623227569Sphilip if (strcmp(pwd->pw_gecos, gecos) != 0) { 624227569Sphilip pwd->pw_gecos = gecos; 625227569Sphilip edited = 1; 626227569Sphilip } 627227569Sphilip } 628227569Sphilip 629227569Sphilip if ((arg = getarg(args, 'h')) != NULL || 630227569Sphilip (arg = getarg(args, 'H')) != NULL) { 631227569Sphilip if (strcmp(arg->val, "-") == 0) { 632227569Sphilip if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 633227569Sphilip pwd->pw_passwd = "*"; /* No access */ 634227569Sphilip edited = 1; 635227569Sphilip } 636227569Sphilip } else { 637227569Sphilip int fd = atoi(arg->val); 638227569Sphilip int precrypt = (arg->ch == 'H'); 639227569Sphilip int b; 640227569Sphilip int istty = isatty(fd); 641227569Sphilip struct termios t; 642227569Sphilip login_cap_t *lc; 643227569Sphilip 644227569Sphilip if (istty) { 645227569Sphilip if (tcgetattr(fd, &t) == -1) 646227569Sphilip istty = 0; 647227569Sphilip else { 648227569Sphilip struct termios n = t; 649227569Sphilip 650227569Sphilip /* Disable echo */ 651227569Sphilip n.c_lflag &= ~(ECHO); 652293806Sarybchik tcsetattr(fd, TCSANOW, &n); 653227569Sphilip printf("%s%spassword for user %s:", 654227569Sphilip (mode == M_UPDATE) ? "new " : "", 655227569Sphilip precrypt ? "encrypted " : "", 656227569Sphilip pwd->pw_name); 657227569Sphilip fflush(stdout); 658293806Sarybchik } 659227569Sphilip } 660227569Sphilip b = read(fd, line, sizeof(line) - 1); 661227569Sphilip if (istty) { /* Restore state */ 662283514Sarybchik tcsetattr(fd, TCSANOW, &t); 663227569Sphilip fputc('\n', stdout); 664227569Sphilip fflush(stdout); 665227569Sphilip } 666227569Sphilip if (b < 0) { 667227569Sphilip warn("-%c file descriptor", precrypt ? 'H' : 668227569Sphilip 'h'); 669227569Sphilip return EX_IOERR; 670227569Sphilip } 671227569Sphilip line[b] = '\0'; 672227569Sphilip if ((p = strpbrk(line, "\r\n")) != NULL) 673227569Sphilip *p = '\0'; 674227569Sphilip if (!*line) 675227569Sphilip errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 676227569Sphilip if (precrypt) { 677227569Sphilip if (strchr(line, ':') != NULL) 678227569Sphilip return EX_DATAERR; 679227569Sphilip pwd->pw_passwd = line; 680227569Sphilip } else { 681227569Sphilip lc = login_getpwclass(pwd); 682227569Sphilip if (lc == NULL || 683227569Sphilip login_setcryptfmt(lc, "md5", NULL) == NULL) 684227569Sphilip warn("setting crypt(3) format"); 685227569Sphilip login_close(lc); 686227569Sphilip pwd->pw_passwd = pw_pwcrypt(line); 687227569Sphilip } 688227569Sphilip edited = 1; 689227569Sphilip } 690227569Sphilip } 691227569Sphilip 692227569Sphilip /* 693227569Sphilip * Special case: -N only displays & exits 694227569Sphilip */ 695227569Sphilip if (getarg(args, 'N') != NULL) 696227569Sphilip return print_user(pwd, 697227569Sphilip getarg(args, 'P') != NULL, 698227569Sphilip getarg(args, '7') != NULL); 699227569Sphilip 700227569Sphilip if (mode == M_ADD) { 701227569Sphilip edited = 1; /* Always */ 702227569Sphilip rc = addpwent(pwd); 703227569Sphilip if (rc == -1) { 704227569Sphilip warnx("user '%s' already exists", pwd->pw_name); 705227569Sphilip return EX_IOERR; 706227569Sphilip } else if (rc != 0) { 707227569Sphilip warn("passwd file update"); 708227569Sphilip return EX_IOERR; 709227569Sphilip } 710227569Sphilip if (cnf->nispasswd && *cnf->nispasswd=='/') { 711227569Sphilip rc = addnispwent(cnf->nispasswd, pwd); 712227569Sphilip if (rc == -1) 713227569Sphilip warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 714227569Sphilip else 715227569Sphilip warn("NIS passwd update"); 716227569Sphilip /* NOTE: we treat NIS-only update errors as non-fatal */ 717227569Sphilip } 718227569Sphilip } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 719227569Sphilip if (edited) { /* Only updated this if required */ 720227569Sphilip rc = chgpwent(a_name->val, pwd); 721283514Sarybchik if (rc == -1) { 722227569Sphilip warnx("user '%s' does not exist (NIS?)", pwd->pw_name); 723227569Sphilip return EX_IOERR; 724227569Sphilip } else if (rc != 0) { 725227569Sphilip warn("passwd file update"); 726227569Sphilip return EX_IOERR; 727227569Sphilip } 728227569Sphilip if ( cnf->nispasswd && *cnf->nispasswd=='/') { 729227569Sphilip rc = chgnispwent(cnf->nispasswd, a_name->val, pwd); 730227569Sphilip if (rc == -1) 731227569Sphilip warn("User '%s' not found in NIS passwd", pwd->pw_name); 732227569Sphilip else 733227569Sphilip warn("NIS passwd update"); 734227569Sphilip /* NOTE: NIS-only update errors are not fatal */ 735227569Sphilip } 736227569Sphilip } 737227569Sphilip } 738227569Sphilip 739227569Sphilip /* 740227569Sphilip * Ok, user is created or changed - now edit group file 741227569Sphilip */ 742227569Sphilip 743227569Sphilip if (mode == M_ADD || getarg(args, 'G') != NULL) { 744227569Sphilip int i; 745227569Sphilip for (i = 0; cnf->groups[i] != NULL; i++) { 746227569Sphilip grp = GETGRNAM(cnf->groups[i]); 747227569Sphilip grp = gr_add(grp, pwd->pw_name); 748227569Sphilip /* 749227569Sphilip * grp can only be NULL in 2 cases: 750227569Sphilip * - the new member is already a member 751227569Sphilip * - a problem with memory occurs 752227569Sphilip * in both cases we want to skip now. 753227569Sphilip */ 754227569Sphilip if (grp == NULL) 755227569Sphilip continue; 756227569Sphilip chggrent(cnf->groups[i], grp); 757227569Sphilip free(grp); 758227569Sphilip } 759227569Sphilip } 760227569Sphilip 761227569Sphilip 762227569Sphilip /* go get a current version of pwd */ 763227569Sphilip pwd = GETPWNAM(a_name->val); 764227569Sphilip if (pwd == NULL) { 765227569Sphilip /* This will fail when we rename, so special case that */ 766227569Sphilip if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) { 767227569Sphilip a_name->val = arg->val; /* update new name */ 768283514Sarybchik pwd = GETPWNAM(a_name->val); /* refetch renamed rec */ 769227569Sphilip } 770227569Sphilip } 771227569Sphilip if (pwd == NULL) /* can't go on without this */ 772227569Sphilip errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); 773227569Sphilip 774227569Sphilip grp = GETGRGID(pwd->pw_gid); 775227569Sphilip pw_log(cnf, mode, W_USER, "%s(%ld):%s(%ld):%s:%s:%s", 776227569Sphilip pwd->pw_name, (long) pwd->pw_uid, 777227569Sphilip grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1), 778227569Sphilip pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 779227569Sphilip 780227569Sphilip /* 781227569Sphilip * If adding, let's touch and chown the user's mail file. This is not 782227569Sphilip * strictly necessary under BSD with a 0755 maildir but it also 783227569Sphilip * doesn't hurt anything to create the empty mailfile 784227569Sphilip */ 785227569Sphilip if (mode == M_ADD) { 786227569Sphilip if (!PWALTDIR()) { 787227569Sphilip sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 788227569Sphilip close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 789227569Sphilip * mtime */ 790227569Sphilip chown(line, pwd->pw_uid, pwd->pw_gid); 791227569Sphilip } 792227569Sphilip } 793227569Sphilip 794283514Sarybchik /* 795227569Sphilip * Let's create and populate the user's home directory. Note 796227569Sphilip * that this also `works' for editing users if -m is used, but 797227569Sphilip * existing files will *not* be overwritten. 798227569Sphilip */ 799227569Sphilip if (!PWALTDIR() && getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) { 800227569Sphilip copymkdir(pwd->pw_dir, cnf->dotdir, cnf->homemode, pwd->pw_uid, pwd->pw_gid); 801227569Sphilip pw_log(cnf, mode, W_USER, "%s(%ld) home %s made", 802227569Sphilip pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir); 803227569Sphilip } 804227569Sphilip 805227569Sphilip 806227569Sphilip /* 807264461Sgnn * Finally, send mail to the new user as well, if we are asked to 808227569Sphilip */ 809227569Sphilip if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 810227569Sphilip FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 811264461Sgnn 812227569Sphilip if (pfp == NULL) 813264461Sgnn warn("sendmail"); 814227569Sphilip else { 815227569Sphilip fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 816264461Sgnn while (fgets(line, sizeof(line), fp) != NULL) { 817227569Sphilip /* Do substitutions? */ 818227569Sphilip fputs(line, pfp); 819227569Sphilip } 820227569Sphilip pclose(pfp); 821264461Sgnn pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent", 822227569Sphilip pwd->pw_name, (long) pwd->pw_uid); 823227569Sphilip } 824264461Sgnn fclose(fp); 825227569Sphilip } 826227569Sphilip 827227569Sphilip return EXIT_SUCCESS; 828227569Sphilip} 829227569Sphilip 830227569Sphilip 831227569Sphilipstatic uid_t 832227569Sphilippw_uidpolicy(struct userconf * cnf, struct cargs * args) 833264461Sgnn{ 834227569Sphilip struct passwd *pwd; 835283514Sarybchik uid_t uid = (uid_t) - 1; 836283514Sarybchik struct carg *a_uid = getarg(args, 'u'); 837227569Sphilip 838227569Sphilip /* 839227569Sphilip * Check the given uid, if any 840264461Sgnn */ 841227569Sphilip if (a_uid != NULL) { 842264461Sgnn uid = (uid_t) atol(a_uid->val); 843227569Sphilip 844227569Sphilip if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) 845227569Sphilip errx(EX_DATAERR, "uid `%ld' has already been allocated", (long) pwd->pw_uid); 846227569Sphilip } else { 847227569Sphilip struct bitmap bm; 848227569Sphilip 849227569Sphilip /* 850227569Sphilip * We need to allocate the next available uid under one of 851227569Sphilip * two policies a) Grab the first unused uid b) Grab the 852227569Sphilip * highest possible unused uid 853227569Sphilip */ 854227569Sphilip if (cnf->min_uid >= cnf->max_uid) { /* Sanity 855227569Sphilip * claus^H^H^H^Hheck */ 856227569Sphilip cnf->min_uid = 1000; 857227569Sphilip cnf->max_uid = 32000; 858227569Sphilip } 859227569Sphilip bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 860227569Sphilip 861227569Sphilip /* 862227569Sphilip * Now, let's fill the bitmap from the password file 863227569Sphilip */ 864227569Sphilip SETPWENT(); 865227569Sphilip while ((pwd = GETPWENT()) != NULL) 866227569Sphilip if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 867227569Sphilip bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 868227569Sphilip ENDPWENT(); 869227569Sphilip 870227569Sphilip /* 871227569Sphilip * Then apply the policy, with fallback to reuse if necessary 872227569Sphilip */ 873227569Sphilip if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 874227569Sphilip uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 875227569Sphilip 876227569Sphilip /* 877227569Sphilip * Another sanity check 878227569Sphilip */ 879227569Sphilip if (uid < cnf->min_uid || uid > cnf->max_uid) 880227569Sphilip errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 881227569Sphilip bm_dealloc(&bm); 882227569Sphilip } 883227569Sphilip return uid; 884227569Sphilip} 885227569Sphilip 886227569Sphilip 887227569Sphilipstatic uid_t 888227569Sphilippw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer) 889227569Sphilip{ 890227569Sphilip struct group *grp; 891227569Sphilip gid_t gid = (uid_t) - 1; 892227569Sphilip struct carg *a_gid = getarg(args, 'g'); 893227569Sphilip 894227569Sphilip /* 895227569Sphilip * If no arg given, see if default can help out 896227569Sphilip */ 897227569Sphilip if (a_gid == NULL && cnf->default_group && *cnf->default_group) 898227569Sphilip a_gid = addarg(args, 'g', cnf->default_group); 899227569Sphilip 900227569Sphilip /* 901227569Sphilip * Check the given gid, if any 902227569Sphilip */ 903227569Sphilip SETGRENT(); 904227569Sphilip if (a_gid != NULL) { 905227569Sphilip if ((grp = GETGRNAM(a_gid->val)) == NULL) { 906227569Sphilip gid = (gid_t) atol(a_gid->val); 907227569Sphilip if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 908227569Sphilip errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 909227569Sphilip } 910227569Sphilip gid = grp->gr_gid; 911227569Sphilip } else if ((grp = GETGRNAM(nam)) != NULL && grp->gr_mem[0] == NULL) { 912227569Sphilip gid = grp->gr_gid; /* Already created? Use it anyway... */ 913227569Sphilip } else { 914227569Sphilip struct cargs grpargs; 915227569Sphilip char tmp[32]; 916227569Sphilip 917227569Sphilip LIST_INIT(&grpargs); 918227569Sphilip addarg(&grpargs, 'n', nam); 919227569Sphilip 920227569Sphilip /* 921227569Sphilip * We need to auto-create a group with the user's name. We 922227569Sphilip * can send all the appropriate output to our sister routine 923283514Sarybchik * bit first see if we can create a group with gid==uid so we 924227569Sphilip * can keep the user and group ids in sync. We purposely do 925227569Sphilip * NOT check the gid range if we can force the sync. If the 926227569Sphilip * user's name dups an existing group, then the group add 927227569Sphilip * function will happily handle that case for us and exit. 928227569Sphilip */ 929227569Sphilip if (GETGRGID(prefer) == NULL) { 930227569Sphilip sprintf(tmp, "%lu", (unsigned long) prefer); 931227569Sphilip addarg(&grpargs, 'g', tmp); 932227569Sphilip } 933227569Sphilip if (getarg(args, 'N')) 934227569Sphilip { 935227569Sphilip addarg(&grpargs, 'N', NULL); 936227569Sphilip addarg(&grpargs, 'q', NULL); 937227569Sphilip gid = pw_group(cnf, M_NEXT, &grpargs); 938227569Sphilip } 939227569Sphilip else 940227569Sphilip { 941227569Sphilip pw_group(cnf, M_ADD, &grpargs); 942227569Sphilip if ((grp = GETGRNAM(nam)) != NULL) 943227569Sphilip gid = grp->gr_gid; 944227569Sphilip } 945227569Sphilip a_gid = LIST_FIRST(&grpargs); 946227569Sphilip while (a_gid != NULL) { 947227569Sphilip struct carg *t = LIST_NEXT(a_gid, list); 948227569Sphilip LIST_REMOVE(a_gid, list); 949227569Sphilip a_gid = t; 950227569Sphilip } 951283514Sarybchik } 952227569Sphilip ENDGRENT(); 953227569Sphilip return gid; 954227569Sphilip} 955227569Sphilip 956227569Sphilip 957227569Sphilipstatic time_t 958227569Sphilippw_pwdpolicy(struct userconf * cnf, struct cargs * args) 959227569Sphilip{ 960227569Sphilip time_t result = 0; 961227569Sphilip time_t now = time(NULL); 962227569Sphilip struct carg *arg = getarg(args, 'p'); 963227569Sphilip 964227569Sphilip if (arg != NULL) { 965227569Sphilip if ((result = parse_date(now, arg->val)) == now) 966279078Sarybchik errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 967279078Sarybchik } else if (cnf->password_days > 0) 968279078Sarybchik result = now + ((long) cnf->password_days * 86400L); 969279078Sarybchik return result; 970279078Sarybchik} 971279078Sarybchik 972227569Sphilip 973227569Sphilipstatic time_t 974227569Sphilippw_exppolicy(struct userconf * cnf, struct cargs * args) 975227569Sphilip{ 976227569Sphilip time_t result = 0; 977227569Sphilip time_t now = time(NULL); 978227569Sphilip struct carg *arg = getarg(args, 'e'); 979227569Sphilip 980227569Sphilip if (arg != NULL) { 981227569Sphilip if ((result = parse_date(now, arg->val)) == now) 982283514Sarybchik errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 983283514Sarybchik } else if (cnf->expire_days > 0) 984283514Sarybchik result = now + ((long) cnf->expire_days * 86400L); 985227569Sphilip return result; 986227569Sphilip} 987227569Sphilip 988227569Sphilip 989227569Sphilipstatic char * 990227569Sphilippw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 991227569Sphilip{ 992227569Sphilip struct carg *arg = getarg(args, 'd'); 993227569Sphilip 994227569Sphilip if (arg) 995227569Sphilip return arg->val; 996227569Sphilip else { 997227569Sphilip static char home[128]; 998291436Sarybchik 999227569Sphilip if (cnf->home == NULL || *cnf->home == '\0') 1000283514Sarybchik errx(EX_CONFIG, "no base home directory set"); 1001227569Sphilip sprintf(home, "%s/%s", cnf->home, user); 1002227569Sphilip return home; 1003227569Sphilip } 1004227569Sphilip} 1005227569Sphilip 1006227569Sphilipstatic char * 1007227569Sphilipshell_path(char const * path, char *shells[], char *sh) 1008227569Sphilip{ 1009227569Sphilip if (sh != NULL && (*sh == '/' || *sh == '\0')) 1010227569Sphilip return sh; /* specified full path or forced none */ 1011227569Sphilip else { 1012227569Sphilip char *p; 1013227569Sphilip char paths[_UC_MAXLINE]; 1014227569Sphilip 1015227569Sphilip /* 1016227569Sphilip * We need to search paths 1017227569Sphilip */ 1018227569Sphilip strlcpy(paths, path, sizeof(paths)); 1019227569Sphilip for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 1020227569Sphilip int i; 1021227569Sphilip static char shellpath[256]; 1022227569Sphilip 1023227569Sphilip if (sh != NULL) { 1024227569Sphilip sprintf(shellpath, "%s/%s", p, sh); 1025227569Sphilip if (access(shellpath, X_OK) == 0) 1026227569Sphilip return shellpath; 1027227569Sphilip } else 1028227569Sphilip for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 1029227569Sphilip sprintf(shellpath, "%s/%s", p, shells[i]); 1030227569Sphilip if (access(shellpath, X_OK) == 0) 1031227569Sphilip return shellpath; 1032227569Sphilip } 1033227569Sphilip } 1034227569Sphilip if (sh == NULL) 1035227569Sphilip errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 1036227569Sphilip errx(EX_CONFIG, "no default shell available or defined"); 1037227569Sphilip return NULL; 1038227569Sphilip } 1039227569Sphilip} 1040227569Sphilip 1041227569Sphilip 1042227569Sphilipstatic char * 1043227569Sphilippw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 1044227569Sphilip{ 1045227569Sphilip char *sh = newshell; 1046227569Sphilip struct carg *arg = getarg(args, 's'); 1047227569Sphilip 1048227569Sphilip if (newshell == NULL && arg != NULL) 1049227569Sphilip sh = arg->val; 1050227569Sphilip return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 1051227569Sphilip} 1052227569Sphilip 1053279141Sarybchik#define SALTSIZE 32 1054227569Sphilip 1055291436Sarybchikstatic char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 1056283514Sarybchik 1057227569Sphilipchar * 1058227569Sphilippw_pwcrypt(char *password) 1059227569Sphilip{ 1060227569Sphilip int i; 1061227569Sphilip char salt[SALTSIZE + 1]; 1062227569Sphilip char *cryptpw; 1063227569Sphilip 1064227569Sphilip static char buf[256]; 1065227569Sphilip 1066227569Sphilip /* 1067227569Sphilip * Calculate a salt value 1068227569Sphilip */ 1069227569Sphilip for (i = 0; i < SALTSIZE; i++) 1070227569Sphilip salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 1071227569Sphilip salt[SALTSIZE] = '\0'; 1072227569Sphilip 1073227569Sphilip cryptpw = crypt(password, salt); 1074227569Sphilip if (cryptpw == NULL) 1075227569Sphilip errx(EX_CONFIG, "crypt(3) failure"); 1076283514Sarybchik return strcpy(buf, cryptpw); 1077283514Sarybchik} 1078227569Sphilip 1079227569Sphilip 1080227569Sphilipstatic char * 1081227569Sphilippw_password(struct userconf * cnf, struct cargs * args, char const * user) 1082227569Sphilip{ 1083227569Sphilip int i, l; 1084227569Sphilip char pwbuf[32]; 1085227569Sphilip 1086227569Sphilip switch (cnf->default_password) { 1087227569Sphilip case -1: /* Random password */ 1088227569Sphilip l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 1089227569Sphilip for (i = 0; i < l; i++) 1090227569Sphilip pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 1091227569Sphilip pwbuf[i] = '\0'; 1092227569Sphilip 1093227569Sphilip /* 1094227569Sphilip * We give this information back to the user 1095227569Sphilip */ 1096227569Sphilip if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL && 1097227569Sphilip getarg(args, 'N') == NULL) { 1098227569Sphilip if (isatty(STDOUT_FILENO)) 1099227569Sphilip printf("Password for '%s' is: ", user); 1100227569Sphilip printf("%s\n", pwbuf); 1101227569Sphilip fflush(stdout); 1102227569Sphilip } 1103227569Sphilip break; 1104227569Sphilip 1105227569Sphilip case -2: /* No password at all! */ 1106227569Sphilip return ""; 1107227569Sphilip 1108227569Sphilip case 0: /* No login - default */ 1109227569Sphilip default: 1110227569Sphilip return "*"; 1111227569Sphilip 1112227569Sphilip case 1: /* user's name */ 1113227569Sphilip strlcpy(pwbuf, user, sizeof(pwbuf)); 1114227569Sphilip break; 1115227569Sphilip } 1116227569Sphilip return pw_pwcrypt(pwbuf); 1117227569Sphilip} 1118227569Sphilip 1119227569Sphilip 1120227569Sphilipstatic int 1121227569Sphilipprint_user(struct passwd * pwd, int pretty, int v7) 1122227569Sphilip{ 1123227569Sphilip if (!pretty) { 1124227569Sphilip char *buf; 1125227569Sphilip 1126227569Sphilip if (!v7) 1127227569Sphilip pwd->pw_passwd = (pwd->pw_passwd == NULL) ? "" : "*"; 1128227569Sphilip 1129227569Sphilip buf = v7 ? pw_make_v7(pwd) : pw_make(pwd); 1130227569Sphilip printf("%s\n", buf); 1131227569Sphilip free(buf); 1132227569Sphilip } else { 1133227569Sphilip int j; 1134227569Sphilip char *p; 1135227569Sphilip struct group *grp = GETGRGID(pwd->pw_gid); 1136227569Sphilip char uname[60] = "User &", office[60] = "[None]", 1137227569Sphilip wphone[60] = "[None]", hphone[60] = "[None]"; 1138227569Sphilip char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 1139227569Sphilip struct tm * tptr; 1140283514Sarybchik 1141283514Sarybchik if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1142283514Sarybchik strlcpy(uname, p, sizeof(uname)); 1143283514Sarybchik if ((p = strtok(NULL, ",")) != NULL) { 1144283514Sarybchik strlcpy(office, p, sizeof(office)); 1145283514Sarybchik if ((p = strtok(NULL, ",")) != NULL) { 1146283514Sarybchik strlcpy(wphone, p, sizeof(wphone)); 1147283514Sarybchik if ((p = strtok(NULL, "")) != NULL) { 1148283514Sarybchik strlcpy(hphone, p, 1149283514Sarybchik sizeof(hphone)); 1150283514Sarybchik } 1151283514Sarybchik } 1152283514Sarybchik } 1153283514Sarybchik } 1154283514Sarybchik /* 1155283514Sarybchik * Handle '&' in gecos field 1156283514Sarybchik */ 1157283514Sarybchik if ((p = strchr(uname, '&')) != NULL) { 1158283514Sarybchik int l = strlen(pwd->pw_name); 1159283514Sarybchik int m = strlen(p); 1160283514Sarybchik 1161283514Sarybchik memmove(p + l, p + 1, m); 1162283514Sarybchik memmove(p, pwd->pw_name, l); 1163283514Sarybchik *p = (char) toupper((unsigned char)*p); 1164283514Sarybchik } 1165283514Sarybchik if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 1166283514Sarybchik strftime(acexpire, sizeof acexpire, "%c", tptr); 1167283514Sarybchik if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 1168283514Sarybchik strftime(pwexpire, sizeof pwexpire, "%c", tptr); 1169283514Sarybchik printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n" 1170283514Sarybchik " Full Name: %s\n" 1171283514Sarybchik " Home: %-26.26s Class: %s\n" 1172283514Sarybchik " Shell: %-26.26s Office: %s\n" 1173283514Sarybchik "Work Phone: %-26.26s Home Phone: %s\n" 1174283514Sarybchik "Acc Expire: %-26.26s Pwd Expire: %s\n", 1175283514Sarybchik pwd->pw_name, (long) pwd->pw_uid, 1176283514Sarybchik grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid, 1177283514Sarybchik uname, pwd->pw_dir, pwd->pw_class, 1178283514Sarybchik pwd->pw_shell, office, wphone, hphone, 1179283514Sarybchik acexpire, pwexpire); 1180283514Sarybchik SETGRENT(); 1181283514Sarybchik j = 0; 1182283514Sarybchik while ((grp=GETGRENT()) != NULL) 1183227569Sphilip { 1184227569Sphilip int i = 0; 1185227569Sphilip while (grp->gr_mem[i] != NULL) 1186227569Sphilip { 1187227569Sphilip if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1188227569Sphilip { 1189227569Sphilip printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1190227569Sphilip break; 1191227569Sphilip } 1192227569Sphilip ++i; 1193227569Sphilip } 1194227569Sphilip } 1195227569Sphilip ENDGRENT(); 1196227569Sphilip printf("%s", j ? "\n" : ""); 1197227569Sphilip } 1198227569Sphilip return EXIT_SUCCESS; 1199227569Sphilip} 1200227569Sphilip 1201227569Sphilipchar * 1202227569Sphilippw_checkname(u_char *name, int gecos) 1203227569Sphilip{ 1204227569Sphilip char showch[8]; 1205227569Sphilip u_char const *badchars, *ch, *showtype; 1206227569Sphilip int reject; 1207227569Sphilip 1208227569Sphilip ch = name; 1209283514Sarybchik reject = 0; 1210283514Sarybchik if (gecos) { 1211227569Sphilip /* See if the name is valid as a gecos (comment) field. */ 1212227569Sphilip badchars = ":!@"; 1213227569Sphilip showtype = "gecos field"; 1214227569Sphilip } else { 1215227569Sphilip /* See if the name is valid as a userid or group. */ 1216227569Sphilip badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1217227569Sphilip showtype = "userid/group name"; 1218227569Sphilip /* Userids and groups can not have a leading '-'. */ 1219227569Sphilip if (*ch == '-') 1220227569Sphilip reject = 1; 1221227569Sphilip } 1222227569Sphilip if (!reject) { 1223227569Sphilip while (*ch) { 1224227569Sphilip if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1225227569Sphilip *ch == 127) { 1226227569Sphilip reject = 1; 1227227569Sphilip break; 1228291436Sarybchik } 1229283514Sarybchik /* 8-bit characters are only allowed in GECOS fields */ 1230227569Sphilip if (!gecos && (*ch & 0x80)) { 1231227569Sphilip reject = 1; 1232227569Sphilip break; 1233227569Sphilip } 1234279048Sarybchik ch++; 1235227569Sphilip } 1236227569Sphilip } 1237291436Sarybchik /* 1238227569Sphilip * A `$' is allowed as the final character for userids and groups, 1239279182Sarybchik * mainly for the benefit of samba. 1240227569Sphilip */ 1241227569Sphilip if (reject && !gecos) { 1242227569Sphilip if (*ch == '$' && *(ch + 1) == '\0') { 1243227569Sphilip reject = 0; 1244227569Sphilip ch++; 1245227569Sphilip } 1246227569Sphilip } 1247227569Sphilip if (reject) { 1248227569Sphilip snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1249227569Sphilip ? "`%c'" : "0x%02x", *ch); 1250227569Sphilip errx(EX_DATAERR, "invalid character %s at position %td in %s", 1251227569Sphilip showch, (ch - name), showtype); 1252227569Sphilip } 1253227569Sphilip if (!gecos && (ch - name) > LOGNAMESIZE) 1254227569Sphilip errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1255227569Sphilip LOGNAMESIZE); 1256227569Sphilip return (char *)name; 1257227569Sphilip} 1258279182Sarybchik 1259227569Sphilip 1260279048Sarybchikstatic void 1261279048Sarybchikrmat(uid_t uid) 1262279048Sarybchik{ 1263227569Sphilip DIR *d = opendir("/var/at/jobs"); 1264227569Sphilip 1265227569Sphilip if (d != NULL) { 1266227569Sphilip struct dirent *e; 1267279048Sarybchik 1268227569Sphilip while ((e = readdir(d)) != NULL) { 1269227569Sphilip struct stat st; 1270227569Sphilip 1271279048Sarybchik if (strncmp(e->d_name, ".lock", 5) != 0 && 1272227569Sphilip stat(e->d_name, &st) == 0 && 1273227569Sphilip !S_ISDIR(st.st_mode) && 1274227569Sphilip st.st_uid == uid) { 1275227569Sphilip char tmp[MAXPATHLEN]; 1276227569Sphilip 1277227569Sphilip sprintf(tmp, "/usr/bin/atrm %s", e->d_name); 1278227569Sphilip system(tmp); 1279227569Sphilip } 1280227569Sphilip } 1281227569Sphilip closedir(d); 1282291436Sarybchik } 1283227569Sphilip} 1284227569Sphilip 1285227569Sphilipstatic void 1286227569Sphiliprmopie(char const * name) 1287291436Sarybchik{ 1288283514Sarybchik static const char etcopie[] = "/etc/opiekeys"; 1289227569Sphilip FILE *fp = fopen(etcopie, "r+"); 1290227569Sphilip 1291227569Sphilip if (fp != NULL) { 1292227569Sphilip char tmp[1024]; 1293227569Sphilip off_t atofs = 0; 1294283514Sarybchik int length = strlen(name); 1295227569Sphilip 1296227569Sphilip while (fgets(tmp, sizeof tmp, fp) != NULL) { 1297227569Sphilip if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 1298227569Sphilip if (fseek(fp, atofs, SEEK_SET) == 0) { 1299291436Sarybchik fwrite("#", 1, 1, fp); /* Comment username out */ 1300227569Sphilip } 1301283514Sarybchik break; 1302283514Sarybchik } 1303227569Sphilip atofs = ftell(fp); 1304283514Sarybchik } 1305227569Sphilip /* 1306227569Sphilip * If we got an error of any sort, don't update! 1307227569Sphilip */ 1308227569Sphilip fclose(fp); 1309227569Sphilip } 1310227569Sphilip} 1311227569Sphilip 1312227569Sphilip