pw_user.c revision 23318
1169689Skan/*- 2132718Skan * Copyright (C) 1996 3132718Skan * David L. Nugent. All rights reserved. 4132718Skan * 5132718Skan * Redistribution and use in source and binary forms, with or without 6132718Skan * modification, are permitted provided that the following conditions 7132718Skan * are met: 8132718Skan * 1. Redistributions of source code must retain the above copyright 9132718Skan * notice, this list of conditions and the following disclaimer. 10132718Skan * 2. Redistributions in binary form must reproduce the above copyright 11132718Skan * notice, this list of conditions and the following disclaimer in the 12132718Skan * documentation and/or other materials provided with the distribution. 13132718Skan * 14132718Skan * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND 15132718Skan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16132718Skan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17132718Skan * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE 18132718Skan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19132718Skan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20169689Skan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21132718Skan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22132718Skan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23132718Skan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24132718Skan * SUCH DAMAGE. 25132718Skan * 26132718Skan * $Id: pw_user.c,v 1.15 1997/02/22 16:12:30 peter Exp $ 27132718Skan */ 28132718Skan 29132718Skan#include <unistd.h> 30132718Skan#include <fcntl.h> 31132718Skan#include <ctype.h> 32132718Skan#include <paths.h> 33132718Skan#include <sys/param.h> 34132718Skan#include <dirent.h> 35132718Skan#include <termios.h> 36132718Skan#include <sys/types.h> 37132718Skan#include <sys/time.h> 38132718Skan#include <sys/resource.h> 39132718Skan#include <utmp.h> 40132718Skan#if defined(USE_MD5RAND) 41132718Skan#include <md5.h> 42169689Skan#endif 43132718Skan#include "pw.h" 44132718Skan#include "bitmap.h" 45132718Skan#include "pwupd.h" 46132718Skan 47132718Skan#if (MAXLOGNAME-1) > UT_NAMESIZE 48132718Skan#define LOGNAMESIZE UT_NAMESIZE 49132718Skan#else 50132718Skan#define LOGNAMESIZE (MAXLOGNAME-1) 51132718Skan#endif 52132718Skan 53132718Skanstatic int print_user(struct passwd * pwd, int pretty); 54132718Skanstatic uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args); 55132718Skanstatic uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer); 56132718Skanstatic time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args); 57132718Skanstatic time_t pw_exppolicy(struct userconf * cnf, struct cargs * args); 58132718Skanstatic char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user); 59132718Skanstatic char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell); 60132718Skanstatic char *pw_password(struct userconf * cnf, struct cargs * args, char const * user); 61132718Skanstatic char *shell_path(char const * path, char *shells[], char *sh); 62132718Skanstatic void rmat(uid_t uid); 63132718Skanstatic void rmskey(char const * name); 64132718Skan 65132718Skan/*- 66132718Skan * -C config configuration file 67132718Skan * -q quiet operation 68132718Skan * -n name login name 69132718Skan * -u uid user id 70132718Skan * -c comment user name/comment 71132718Skan * -d directory home directory 72132718Skan * -e date account expiry date 73132718Skan * -p date password expiry date 74132718Skan * -g grp primary group 75132718Skan * -G grp1,grp2 additional groups 76132718Skan * -m [ -k dir ] create and set up home 77132718Skan * -s shell name of login shell 78132718Skan * -o duplicate uid ok 79132718Skan * -L class user class 80132718Skan * -l name new login name 81132718Skan * -h fd password filehandle 82132718Skan * -F force print or add 83132718Skan * Setting defaults: 84132718Skan * -D set user defaults 85132718Skan * -b dir default home root dir 86132718Skan * -e period default expiry period 87132718Skan * -p period default password change period 88132718Skan * -g group default group 89132718Skan * -G grp1,grp2.. default additional groups 90132718Skan * -L class default login class 91132718Skan * -k dir default home skeleton 92132718Skan * -s shell default shell 93132718Skan * -w method default password method 94132718Skan */ 95132718Skan 96132718Skanint 97132718Skanpw_user(struct userconf * cnf, int mode, struct cargs * args) 98132718Skan{ 99132718Skan int r, r1; 100132718Skan char *p = NULL; 101132718Skan struct carg *a_name; 102132718Skan struct carg *a_uid; 103132718Skan struct carg *arg; 104132718Skan struct passwd *pwd = NULL; 105132718Skan struct group *grp; 106132718Skan struct stat st; 107132718Skan char line[_PASSWORD_LEN+1]; 108132718Skan 109132718Skan static struct passwd fakeuser = 110132718Skan { 111132718Skan NULL, 112132718Skan "*", 113132718Skan -1, 114132718Skan -1, 115132718Skan 0, 116132718Skan "", 117132718Skan "User &", 118132718Skan "/bin/sh", 119132718Skan 0, 120132718Skan 0 121132718Skan }; 122132718Skan 123132718Skan /* 124132718Skan * With M_NEXT, we only need to return the 125132718Skan * next uid to stdout 126132718Skan */ 127132718Skan if (mode == M_NEXT) 128132718Skan { 129132718Skan uid_t next = pw_uidpolicy(cnf, args); 130132718Skan if (getarg(args, 'q')) 131132718Skan return next; 132132718Skan printf("%ld:", (long)next); 133132718Skan pw_group(cnf, mode, args); 134132718Skan return EXIT_SUCCESS; 135132718Skan } 136132718Skan 137132718Skan /* 138132718Skan * We can do all of the common legwork here 139132718Skan */ 140132718Skan 141132718Skan if ((arg = getarg(args, 'b')) != NULL) { 142132718Skan cnf->home = arg->val; 143132718Skan } 144132718Skan 145132718Skan /* 146132718Skan * If we'll need to use it or we're updating it, 147132718Skan * then create the base home directory if necessary 148132718Skan */ 149132718Skan if (arg != NULL || getarg(args, 'm') != NULL) { 150132718Skan int l = strlen(cnf->home); 151132718Skan 152132718Skan if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 153132718Skan cnf->home[--l] = '\0'; 154132718Skan 155132718Skan if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 156132718Skan cmderr(EX_DATAERR, "invalid base directory for home '%s'\n", cnf->home); 157132718Skan 158132718Skan if (stat(cnf->home, &st) == -1) { 159132718Skan char dbuf[MAXPATHLEN]; 160132718Skan 161132718Skan /* 162132718Skan * This is a kludge especially for Joerg :) 163132718Skan * If the home directory would be created in the root partition, then 164132718Skan * we really create it under /usr which is likely to have more space. 165132718Skan * But we create a symlink from cnf->home -> "/usr" -> cnf->home 166132718Skan */ 167132718Skan if (strchr(cnf->home+1, '/') == NULL) { 168132718Skan strcpy(dbuf, "/usr"); 169132718Skan strncat(dbuf, cnf->home, MAXPATHLEN-5); 170132718Skan if (mkdir(dbuf, 0755) != -1 || errno == EEXIST) { 171132718Skan chown(dbuf, 0, 0); 172132718Skan symlink(dbuf, cnf->home); 173132718Skan } 174132718Skan /* If this falls, fall back to old method */ 175132718Skan } 176132718Skan p = strncpy(dbuf, cnf->home, sizeof dbuf); 177132718Skan dbuf[MAXPATHLEN-1] = '\0'; 178132718Skan if (stat(dbuf, &st) == -1) { 179132718Skan while ((p = strchr(++p, '/')) != NULL) { 180132718Skan *p = '\0'; 181132718Skan if (stat(dbuf, &st) == -1) { 182132718Skan if (mkdir(dbuf, 0755) == -1) 183132718Skan goto direrr; 184132718Skan chown(dbuf, 0, 0); 185132718Skan } else if (!S_ISDIR(st.st_mode)) 186132718Skan cmderr(EX_OSFILE, "'%s' (root home parent) is not a directory\n", dbuf); 187132718Skan *p = '/'; 188132718Skan } 189132718Skan } 190132718Skan if (stat(dbuf, &st) == -1) { 191132718Skan if (mkdir(dbuf, 0755) == -1) { 192132718Skan direrr: cmderr(EX_OSFILE, "mkdir '%s': %s\n", dbuf, strerror(errno)); 193132718Skan } 194132718Skan chown(dbuf, 0, 0); 195132718Skan } 196132718Skan } else if (!S_ISDIR(st.st_mode)) 197132718Skan cmderr(EX_OSFILE, "root home `%s' is not a directory\n", cnf->home); 198132718Skan } 199132718Skan 200132718Skan 201132718Skan if ((arg = getarg(args, 'e')) != NULL) 202132718Skan cnf->expire_days = atoi(arg->val); 203132718Skan 204132718Skan if ((arg = getarg(args, 'y')) != NULL) 205132718Skan cnf->nispasswd = arg->val; 206132718Skan 207132718Skan if ((arg = getarg(args, 'p')) != NULL && arg->val) 208132718Skan cnf->password_days = atoi(arg->val); 209132718Skan 210132718Skan if ((arg = getarg(args, 'g')) != NULL) { 211132718Skan p = arg->val; 212132718Skan if ((grp = getgrnam(p)) == NULL) { 213132718Skan if (!isdigit(*p) || (grp = getgrgid((gid_t) atoi(p))) == NULL) 214132718Skan cmderr(EX_NOUSER, "group `%s' does not exist\n", p); 215259563Spfg } 216259563Spfg cnf->default_group = newstr(grp->gr_name); 217259563Spfg } 218259563Spfg if ((arg = getarg(args, 'L')) != NULL) 219259563Spfg cnf->default_class = pw_checkname((u_char *)arg->val, 0); 220132718Skan 221132718Skan if ((arg = getarg(args, 'G')) != NULL && arg->val) { 222132718Skan int i = 0; 223132718Skan 224132718Skan for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 225132718Skan if ((grp = getgrnam(p)) == NULL) { 226132718Skan if (!isdigit(*p) || (grp = getgrgid((gid_t) atoi(p))) == NULL) 227132718Skan cmderr(EX_NOUSER, "group `%s' does not exist\n", p); 228132718Skan } 229132718Skan if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 230132718Skan cnf->groups[i++] = newstr(grp->gr_name); 231132718Skan } 232132718Skan while (i < cnf->numgroups) 233132718Skan cnf->groups[i++] = NULL; 234132718Skan } 235132718Skan if ((arg = getarg(args, 'k')) != NULL) { 236132718Skan if (stat(cnf->dotdir = arg->val, &st) == -1 || S_ISDIR(st.st_mode)) 237132718Skan cmderr(EX_OSFILE, "skeleton `%s' is not a directory or does not exist\n", cnf->dotdir); 238132718Skan } 239132718Skan if ((arg = getarg(args, 's')) != NULL) 240132718Skan cnf->shell_default = arg->val; 241132718Skan 242132718Skan if (mode == M_ADD && getarg(args, 'D')) { 243132718Skan if (getarg(args, 'n') != NULL) 244132718Skan cmderr(EX_DATAERR, "can't combine `-D' with `-n name'\n"); 245132718Skan if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 246132718Skan if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 247132718Skan cnf->min_uid = 1000; 248132718Skan if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 249132718Skan cnf->max_uid = 32000; 250132718Skan } 251132718Skan if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 252132718Skan if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 253132718Skan cnf->min_gid = 1000; 254132718Skan if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 255132718Skan cnf->max_gid = 32000; 256132718Skan } 257132718Skan if ((arg = getarg(args, 'w')) != NULL) 258132718Skan cnf->default_password = boolean_val(arg->val, cnf->default_password); 259132718Skan 260132718Skan arg = getarg(args, 'C'); 261132718Skan if (write_userconfig(arg ? arg->val : NULL)) 262132718Skan return EXIT_SUCCESS; 263132718Skan perror("config update"); 264132718Skan return EX_IOERR; 265132718Skan } 266132718Skan if (mode == M_PRINT && getarg(args, 'a')) { 267132718Skan int pretty = getarg(args, 'P') != NULL; 268132718Skan 269132718Skan setpwent(); 270132718Skan while ((pwd = getpwent()) != NULL) 271132718Skan print_user(pwd, pretty); 272132718Skan endpwent(); 273132718Skan return EXIT_SUCCESS; 274132718Skan } 275132718Skan if ((a_name = getarg(args, 'n')) != NULL) 276169689Skan pwd = getpwnam(pw_checkname((u_char *)a_name->val, 0)); 277132718Skan a_uid = getarg(args, 'u'); 278132718Skan 279132718Skan if (a_uid == NULL) { 280132718Skan if (a_name == NULL) 281132718Skan cmderr(EX_DATAERR, "user name or id required\n"); 282132718Skan 283132718Skan /* 284132718Skan * Determine whether 'n' switch is name or uid - we don't 285132718Skan * really don't really care which we have, but we need to 286132718Skan * know. 287132718Skan */ 288132718Skan if (mode != M_ADD && pwd == NULL && isdigit(*a_name->val) && atoi(a_name->val) > 0) { /* Assume uid */ 289132718Skan (a_uid = a_name)->ch = 'u'; 290132718Skan a_name = NULL; 291132718Skan } 292132718Skan } 293132718Skan /* 294132718Skan * Update, delete & print require that the user exists 295132718Skan */ 296132718Skan if (mode == M_UPDATE || mode == M_DELETE || mode == M_PRINT) { 297132718Skan if (a_name == NULL && pwd == NULL) /* Try harder */ 298132718Skan pwd = getpwuid(atoi(a_uid->val)); 299132718Skan 300132718Skan if (pwd == NULL) { 301132718Skan if (mode == M_PRINT && getarg(args, 'F')) { 302132718Skan fakeuser.pw_name = a_name ? a_name->val : "nouser"; 303132718Skan fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1; 304132718Skan return print_user(&fakeuser, getarg(args, 'P') != NULL); 305132718Skan } 306132718Skan if (a_name == NULL) 307132718Skan cmderr(EX_NOUSER, "no such uid `%s'\n", a_uid->val); 308132718Skan cmderr(EX_NOUSER, "no such user `%s'\n", a_name->val); 309132718Skan } 310132718Skan if (a_name == NULL) /* May be needed later */ 311132718Skan a_name = addarg(args, 'n', newstr(pwd->pw_name)); 312132718Skan 313132718Skan /* 314132718Skan * Handle deletions now 315132718Skan */ 316132718Skan if (mode == M_DELETE) { 317132718Skan char file[MAXPATHLEN]; 318132718Skan char home[MAXPATHLEN]; 319132718Skan uid_t uid = pwd->pw_uid; 320132718Skan 321132718Skan if (strcmp(pwd->pw_name, "root") == 0) 322132718Skan cmderr(EX_DATAERR, "cannot remove user 'root'\n"); 323132718Skan 324132718Skan /* 325132718Skan * Remove skey record from /etc/skeykeys 326132718Skan */ 327132718Skan 328132718Skan rmskey(pwd->pw_name); 329132718Skan 330132718Skan /* 331132718Skan * Remove crontabs 332132718Skan */ 333132718Skan sprintf(file, "/var/cron/tabs/%s", pwd->pw_name); 334132718Skan if (access(file, F_OK) == 0) { 335132718Skan sprintf(file, "crontab -u %s -r", pwd->pw_name); 336132718Skan system(file); 337132718Skan } 338132718Skan /* 339132718Skan * Save these for later, since contents of pwd may be 340132718Skan * invalidated by deletion 341132718Skan */ 342132718Skan sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 343132718Skan strncpy(home, pwd->pw_dir, sizeof home); 344132718Skan home[sizeof home - 1] = '\0'; 345132718Skan 346132718Skan if (!delpwent(pwd)) 347132718Skan cmderr(EX_IOERR, "Error updating passwd file: %s\n", strerror(errno)); 348132718Skan 349132718Skan if (cnf->nispasswd && *cnf->nispasswd=='/' && !delnispwent(cnf->nispasswd, a_name->val)) 350132718Skan perror("WARNING: NIS passwd update"); 351132718Skan 352132718Skan editgroups(a_name->val, NULL); 353132718Skan 354132718Skan pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid); 355132718Skan 356132718Skan /* 357132718Skan * Remove mail file 358132718Skan */ 359132718Skan remove(file); 360132718Skan 361132718Skan /* 362132718Skan * Remove at jobs 363132718Skan */ 364132718Skan if (getpwuid(uid) == NULL) 365169689Skan rmat(uid); 366169689Skan 367169689Skan /* 368169689Skan * Remove home directory and contents 369169689Skan */ 370169689Skan if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) { 371169689Skan if (stat(home, &st) != -1) { 372169689Skan rm_r(home, uid); 373169689Skan pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved", 374169689Skan a_name->val, (long) uid, home, 375169689Skan stat(home, &st) == -1 ? "" : "not completely "); 376169689Skan } 377169689Skan } 378169689Skan return EXIT_SUCCESS; 379169689Skan } else if (mode == M_PRINT) 380169689Skan return print_user(pwd, getarg(args, 'P') != NULL); 381169689Skan 382169689Skan /* 383169689Skan * The rest is edit code 384169689Skan */ 385169689Skan if ((arg = getarg(args, 'l')) != NULL) { 386132718Skan if (strcmp(pwd->pw_name, "root") == 0) 387132718Skan cmderr(EX_DATAERR, "can't rename `root' account\n"); 388132718Skan pwd->pw_name = pw_checkname((u_char *)arg->val, 0); 389132718Skan } 390132718Skan if ((arg = getarg(args, 'u')) != NULL && isdigit(*arg->val)) { 391132718Skan pwd->pw_uid = (uid_t) atol(arg->val); 392132718Skan if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 393132718Skan cmderr(EX_DATAERR, "can't change uid of `root' account\n"); 394169689Skan if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 395132718Skan fprintf(stderr, "WARNING: account `%s' will have a uid of 0 (superuser access!)\n", pwd->pw_name); 396132718Skan } 397132718Skan if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) /* Already checked this */ 398132718Skan pwd->pw_gid = (gid_t) getgrnam(cnf->default_group)->gr_gid; 399132718Skan 400132718Skan if ((arg = getarg(args, 'p')) != NULL) { 401132718Skan if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) 402132718Skan pwd->pw_change = 0; 403132718Skan else { 404132718Skan time_t now = time(NULL); 405132718Skan time_t expire = parse_date(now, arg->val); 406132718Skan 407132718Skan if (now == expire) 408132718Skan cmderr(EX_DATAERR, "Invalid password change date `%s'\n", arg->val); 409132718Skan pwd->pw_change = expire; 410132718Skan } 411132718Skan } 412132718Skan if ((arg = getarg(args, 'e')) != NULL) { 413132718Skan if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) 414132718Skan pwd->pw_expire = 0; 415132718Skan else { 416132718Skan time_t now = time(NULL); 417132718Skan time_t expire = parse_date(now, arg->val); 418132718Skan 419132718Skan if (now == expire) 420132718Skan cmderr(EX_DATAERR, "Invalid account expiry date `%s'\n", arg->val); 421169689Skan pwd->pw_expire = expire; 422132718Skan } 423132718Skan } 424132718Skan if ((arg = getarg(args, 's')) != NULL) 425132718Skan pwd->pw_shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 426132718Skan 427132718Skan if (getarg(args, 'L')) 428132718Skan pwd->pw_class = cnf->default_class; 429132718Skan 430132718Skan if ((arg = getarg(args, 'd')) != NULL) { 431132718Skan if (stat(pwd->pw_dir = arg->val, &st) == -1) { 432132718Skan if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 433132718Skan fprintf(stderr, "WARNING: home `%s' does not exist\n", pwd->pw_dir); 434132718Skan } else if (!S_ISDIR(st.st_mode)) 435132718Skan fprintf(stderr, "WARNING: home `%s' is not a directory\n", pwd->pw_dir); 436132718Skan } 437132718Skan 438132718Skan if ((arg = getarg(args, 'w')) != NULL && getarg(args, 'h') == NULL) 439132718Skan pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 440132718Skan 441132718Skan } else { 442132718Skan if (a_name == NULL) /* Required */ 443132718Skan cmderr(EX_DATAERR, "login name required\n"); 444132718Skan else if ((pwd = getpwnam(a_name->val)) != NULL) /* Exists */ 445132718Skan cmderr(EX_DATAERR, "login name `%s' already exists\n", a_name->val); 446132718Skan 447132718Skan /* 448132718Skan * Now, set up defaults for a new user 449132718Skan */ 450132718Skan pwd = &fakeuser; 451132718Skan pwd->pw_name = a_name->val; 452132718Skan pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 453132718Skan pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 454132718Skan pwd->pw_uid = pw_uidpolicy(cnf, args); 455132718Skan pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid); 456132718Skan pwd->pw_change = pw_pwdpolicy(cnf, args); 457132718Skan pwd->pw_expire = pw_exppolicy(cnf, args); 458132718Skan pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 459132718Skan pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 460132718Skan 461132718Skan if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 462132718Skan fprintf(stderr, "WARNING: new account `%s' has a uid of 0 (superuser access!)\n", pwd->pw_name); 463132718Skan } 464132718Skan 465132718Skan /* 466132718Skan * Shared add/edit code 467132718Skan */ 468169689Skan if ((arg = getarg(args, 'c')) != NULL) 469169689Skan pwd->pw_gecos = pw_checkname((u_char *)arg->val, 1); 470169689Skan 471169689Skan if ((arg = getarg(args, 'h')) != NULL) { 472169689Skan if (strcmp(arg->val, "-") == 0) 473169689Skan pwd->pw_passwd = "*"; /* No access */ 474169689Skan else { 475169689Skan int fd = atoi(arg->val); 476169689Skan int b; 477169689Skan int istty = isatty(fd); 478169689Skan struct termios t; 479169689Skan 480169689Skan if (istty) { 481169689Skan if (tcgetattr(fd, &t) == -1) 482169689Skan istty = 0; 483169689Skan else { 484169689Skan struct termios n = t; 485169689Skan 486169689Skan /* Disable echo */ 487169689Skan n.c_lflag &= ~(ECHO); 488169689Skan tcsetattr(fd, TCSANOW, &n); 489169689Skan printf("%sassword for user %s:", (mode == M_UPDATE) ? "New p" : "P", pwd->pw_name); 490169689Skan fflush(stdout); 491169689Skan } 492169689Skan } 493169689Skan b = read(fd, line, sizeof(line) - 1); 494169689Skan if (istty) { /* Restore state */ 495169689Skan tcsetattr(fd, TCSANOW, &t); 496169689Skan fputc('\n', stdout); 497169689Skan fflush(stdout); 498169689Skan } 499169689Skan if (b < 0) { 500169689Skan perror("-h file descriptor"); 501169689Skan return EX_IOERR; 502169689Skan } 503169689Skan line[b] = '\0'; 504169689Skan if ((p = strpbrk(line, " \t\r\n")) != NULL) 505169689Skan *p = '\0'; 506169689Skan if (!*line) 507169689Skan cmderr(EX_DATAERR, "empty password read on file descriptor %d\n", fd); 508169689Skan pwd->pw_passwd = pw_pwcrypt(line); 509169689Skan } 510169689Skan } 511169689Skan 512169689Skan /* 513169689Skan * Special case: -N only displays & exits 514169689Skan */ 515169689Skan if (getarg(args, 'N') != NULL) 516169689Skan return print_user(pwd, getarg(args, 'P') != NULL); 517169689Skan 518169689Skan r = r1 = 1; 519169689Skan if (mode == M_ADD) { 520169689Skan r = addpwent(pwd); 521169689Skan if (r && cnf->nispasswd && *cnf->nispasswd=='/') 522169689Skan r1 = addnispwent(cnf->nispasswd, pwd); 523169689Skan } else if (mode == M_UPDATE) { 524169689Skan r = chgpwent(a_name->val, pwd); 525169689Skan if (r && cnf->nispasswd && *cnf->nispasswd=='/') 526169689Skan r1 = chgnispwent(cnf->nispasswd, a_name->val, pwd); 527169689Skan } 528169689Skan 529169689Skan if (!r) { 530169689Skan perror("password update"); 531169689Skan return EX_IOERR; 532169689Skan } else if (!r1) { 533169689Skan perror("WARNING: NIS password update"); 534169689Skan /* Keep on trucking */ 535169689Skan } 536169689Skan 537169689Skan /* 538169689Skan * Ok, user is created or changed - now edit group file 539169689Skan */ 540169689Skan 541169689Skan if (mode == M_ADD || getarg(args, 'G') != NULL) 542169689Skan editgroups(pwd->pw_name, cnf->groups); 543169689Skan 544169689Skan /* pwd may have been invalidated */ 545169689Skan if ((pwd = getpwnam(a_name->val)) == NULL) 546169689Skan cmderr(EX_NOUSER, "user '%s' disappeared during update\n", a_name->val); 547169689Skan 548169689Skan grp = getgrgid(pwd->pw_gid); 549169689Skan pw_log(cnf, mode, W_USER, "%s(%ld):%s(%d):%s:%s:%s", 550169689Skan pwd->pw_name, (long) pwd->pw_uid, 551169689Skan grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1), 552169689Skan pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 553169689Skan 554169689Skan /* 555169689Skan * If adding, let's touch and chown the user's mail file. This is not 556169689Skan * strictly necessary under BSD with a 0755 maildir but it also 557169689Skan * doesn't hurt anything to create the empty mailfile 558169689Skan */ 559169689Skan if (mode == M_ADD) { 560169689Skan FILE *fp; 561169689Skan 562169689Skan sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 563169689Skan close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 564169689Skan * mtime */ 565169689Skan chown(line, pwd->pw_uid, pwd->pw_gid); 566169689Skan 567169689Skan /* 568169689Skan * Send mail to the new user as well, if we are asked to 569169689Skan */ 570169689Skan if (cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 571169689Skan FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 572169689Skan 573169689Skan if (pfp == NULL) 574169689Skan perror("sendmail"); 575169689Skan else { 576169689Skan fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 577169689Skan while (fgets(line, sizeof(line), fp) != NULL) { 578169689Skan /* Do substitutions? */ 579169689Skan fputs(line, pfp); 580169689Skan } 581169689Skan pclose(pfp); 582169689Skan pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent", 583169689Skan pwd->pw_name, (long) pwd->pw_uid); 584169689Skan } 585169689Skan fclose(fp); 586169689Skan } 587169689Skan } 588169689Skan /* 589169689Skan * Finally, let's create and populate the user's home directory. Note 590169689Skan * that this also `works' for editing users if -m is used, but 591169689Skan * existing files will *not* be overwritten. 592169689Skan */ 593169689Skan if (getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) { 594169689Skan copymkdir(pwd->pw_dir, cnf->dotdir, 0755, pwd->pw_uid, pwd->pw_gid); 595169689Skan pw_log(cnf, mode, W_USER, "%s(%ld) home %s made", 596169689Skan pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir); 597169689Skan } 598169689Skan return EXIT_SUCCESS; 599169689Skan} 600169689Skan 601169689Skan 602169689Skanstatic uid_t 603169689Skanpw_uidpolicy(struct userconf * cnf, struct cargs * args) 604169689Skan{ 605169689Skan struct passwd *pwd; 606169689Skan uid_t uid = (uid_t) - 1; 607169689Skan struct carg *a_uid = getarg(args, 'u'); 608169689Skan 609169689Skan /* 610169689Skan * Check the given uid, if any 611169689Skan */ 612169689Skan if (a_uid != NULL) { 613169689Skan uid = (uid_t) atol(a_uid->val); 614169689Skan 615169689Skan if ((pwd = getpwuid(uid)) != NULL && getarg(args, 'o') == NULL) 616169689Skan cmderr(EX_DATAERR, "uid `%ld' has already been allocated\n", (long) pwd->pw_uid); 617169689Skan } else { 618169689Skan struct bitmap bm; 619169689Skan 620169689Skan /* 621169689Skan * We need to allocate the next available uid under one of 622169689Skan * two policies a) Grab the first unused uid b) Grab the 623169689Skan * highest possible unused uid 624169689Skan */ 625169689Skan if (cnf->min_uid >= cnf->max_uid) { /* Sanity 626169689Skan * claus^H^H^H^Hheck */ 627169689Skan cnf->min_uid = 1000; 628169689Skan cnf->max_uid = 32000; 629169689Skan } 630169689Skan bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 631169689Skan 632169689Skan /* 633169689Skan * Now, let's fill the bitmap from the password file 634169689Skan */ 635169689Skan setpwent(); 636169689Skan while ((pwd = getpwent()) != NULL) 637169689Skan if (pwd->pw_uid >= (int) cnf->min_uid && pwd->pw_uid <= (int) cnf->max_uid) 638169689Skan bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 639169689Skan endpwent(); 640169689Skan 641169689Skan /* 642169689Skan * Then apply the policy, with fallback to reuse if necessary 643169689Skan */ 644169689Skan if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 645169689Skan uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 646169689Skan 647169689Skan /* 648169689Skan * Another sanity check 649169689Skan */ 650169689Skan if (uid < cnf->min_uid || uid > cnf->max_uid) 651169689Skan cmderr(EX_SOFTWARE, "unable to allocate a new uid - range fully used\n"); 652169689Skan bm_dealloc(&bm); 653169689Skan } 654169689Skan return uid; 655169689Skan} 656169689Skan 657169689Skan 658169689Skanstatic uid_t 659169689Skanpw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer) 660169689Skan{ 661169689Skan struct group *grp; 662169689Skan gid_t gid = (uid_t) - 1; 663169689Skan struct carg *a_gid = getarg(args, 'g'); 664169689Skan 665169689Skan /* 666169689Skan * If no arg given, see if default can help out 667169689Skan */ 668169689Skan if (a_gid == NULL && cnf->default_group && *cnf->default_group) 669169689Skan a_gid = addarg(args, 'g', cnf->default_group); 670169689Skan 671169689Skan /* 672169689Skan * Check the given gid, if any 673169689Skan */ 674169689Skan setgrent(); 675169689Skan if (a_gid != NULL) { 676169689Skan if ((grp = getgrnam(a_gid->val)) == NULL) { 677169689Skan gid = (gid_t) atol(a_gid->val); 678169689Skan if ((gid == 0 && !isdigit(*a_gid->val)) || (grp = getgrgid(gid)) == NULL) 679169689Skan cmderr(EX_NOUSER, "group `%s' is not defined\n", a_gid->val); 680169689Skan } 681169689Skan gid = grp->gr_gid; 682169689Skan } else if ((grp = getgrnam(nam)) != NULL && grp->gr_mem[0] == NULL) { 683169689Skan gid = grp->gr_gid; /* Already created? Use it anyway... */ 684169689Skan } else { 685169689Skan struct cargs grpargs; 686169689Skan char tmp[32]; 687169689Skan 688169689Skan LIST_INIT(&grpargs); 689169689Skan addarg(&grpargs, 'n', nam); 690169689Skan 691169689Skan /* 692169689Skan * We need to auto-create a group with the user's name. We 693132718Skan * can send all the appropriate output to our sister routine 694132718Skan * bit first see if we can create a group with gid==uid so we 695132718Skan * can keep the user and group ids in sync. We purposely do 696132718Skan * NOT check the gid range if we can force the sync. If the 697132718Skan * user's name dups an existing group, then the group add 698132718Skan * function will happily handle that case for us and exit. 699132718Skan */ 700132718Skan if (getgrgid(prefer) == NULL) { 701132718Skan sprintf(tmp, "%lu", (unsigned long) prefer); 702132718Skan addarg(&grpargs, 'g', tmp); 703132718Skan } 704132718Skan if (getarg(args, 'N')) 705132718Skan { 706132718Skan addarg(&grpargs, 'N', NULL); 707132718Skan addarg(&grpargs, 'q', NULL); 708132718Skan gid = pw_group(cnf, M_NEXT, &grpargs); 709132718Skan } 710132718Skan else 711132718Skan { 712132718Skan pw_group(cnf, M_ADD, &grpargs); 713132718Skan if ((grp = getgrnam(nam)) != NULL) 714132718Skan gid = grp->gr_gid; 715132718Skan } 716132718Skan a_gid = grpargs.lh_first; 717132718Skan while (a_gid != NULL) { 718132718Skan struct carg *t = a_gid->list.le_next; 719132718Skan LIST_REMOVE(a_gid, list); 720132718Skan a_gid = t; 721132718Skan } 722132718Skan } 723132718Skan endgrent(); 724132718Skan return gid; 725132718Skan} 726132718Skan 727132718Skan 728132718Skanstatic time_t 729132718Skanpw_pwdpolicy(struct userconf * cnf, struct cargs * args) 730132718Skan{ 731132718Skan time_t result = 0; 732132718Skan time_t now = time(NULL); 733132718Skan struct carg *arg = getarg(args, 'e'); 734132718Skan 735132718Skan if (arg != NULL) { 736 if ((result = parse_date(now, arg->val)) == now) 737 cmderr(EX_DATAERR, "invalid date/time `%s'\n", arg->val); 738 } else if (cnf->password_days > 0) 739 result = now + ((long) cnf->password_days * 86400L); 740 return result; 741} 742 743 744static time_t 745pw_exppolicy(struct userconf * cnf, struct cargs * args) 746{ 747 time_t result = 0; 748 time_t now = time(NULL); 749 struct carg *arg = getarg(args, 'e'); 750 751 if (arg != NULL) { 752 if ((result = parse_date(now, arg->val)) == now) 753 cmderr(EX_DATAERR, "invalid date/time `%s'\n", arg->val); 754 } else if (cnf->expire_days > 0) 755 result = now + ((long) cnf->expire_days * 86400L); 756 return result; 757} 758 759 760static char * 761pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 762{ 763 struct carg *arg = getarg(args, 'd'); 764 765 if (arg) 766 return arg->val; 767 else { 768 static char home[128]; 769 770 if (cnf->home == NULL || *cnf->home == '\0') 771 cmderr(EX_CONFIG, "no base home directory set\n"); 772 sprintf(home, "%s/%s", cnf->home, user); 773 return home; 774 } 775} 776 777static char * 778shell_path(char const * path, char *shells[], char *sh) 779{ 780 if (sh != NULL && (*sh == '/' || *sh == '\0')) 781 return sh; /* specified full path or forced none */ 782 else { 783 char *p; 784 char paths[_UC_MAXLINE]; 785 786 /* 787 * We need to search paths 788 */ 789 strncpy(paths, path, sizeof paths); 790 paths[sizeof paths - 1] = '\0'; 791 for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 792 int i; 793 static char shellpath[256]; 794 795 if (sh != NULL) { 796 sprintf(shellpath, "%s/%s", p, sh); 797 if (access(shellpath, X_OK) == 0) 798 return shellpath; 799 } else 800 for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 801 sprintf(shellpath, "%s/%s", p, shells[i]); 802 if (access(shellpath, X_OK) == 0) 803 return shellpath; 804 } 805 } 806 if (sh == NULL) 807 cmderr(EX_OSFILE, "can't find shell `%s' in shell paths\n", sh); 808 cmderr(EX_CONFIG, "no default shell available or defined\n"); 809 return NULL; 810 } 811} 812 813 814static char * 815pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 816{ 817 char *sh = newshell; 818 struct carg *arg = getarg(args, 's'); 819 820 if (newshell == NULL && arg != NULL) 821 sh = arg->val; 822 return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 823} 824 825static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ."; 826 827char * 828pw_pwcrypt(char *password) 829{ 830 int i; 831 char salt[12]; 832 833 static char buf[256]; 834 835 /* 836 * Calculate a salt value 837 */ 838 srandom((unsigned) (time(NULL) ^ getpid())); 839 for (i = 0; i < 8; i++) 840 salt[i] = chars[random() % 63]; 841 salt[i] = '\0'; 842 843 return strcpy(buf, crypt(password, salt)); 844} 845 846#if defined(__FreeBSD__) 847 848#if defined(USE_MD5RAND) 849u_char * 850pw_getrand(u_char *buf, int len) /* cryptographically secure rng */ 851{ 852 int i; 853 for (i=0;i<len;i+=16) { 854 u_char ubuf[16]; 855 856 MD5_CTX md5_ctx; 857 struct timeval tv, tvo; 858 struct rusage ru; 859 int n=0; 860 int t; 861 862 MD5Init (&md5_ctx); 863 t=getpid(); 864 MD5Update (&md5_ctx, (u_char*)&t, sizeof t); 865 t=getppid(); 866 MD5Update (&md5_ctx, (u_char*)&t, sizeof t); 867 gettimeofday (&tvo, NULL); 868 do { 869 getrusage (RUSAGE_SELF, &ru); 870 MD5Update (&md5_ctx, (u_char*)&ru, sizeof ru); 871 gettimeofday (&tv, NULL); 872 MD5Update (&md5_ctx, (u_char*)&tv, sizeof tv); 873 } while (n++<20 || tv.tv_usec-tvo.tv_usec<100*1000); 874 MD5Final (ubuf, &md5_ctx); 875 memcpy(buf+i, ubuf, MIN(16, len-n)); 876 } 877 return buf; 878} 879 880#else /* Use random device (preferred) */ 881 882static u_char * 883pw_getrand(u_char *buf, int len) 884{ 885 int fd; 886 fd = open("/dev/urandom", O_RDONLY); 887 if (fd==-1) 888 cmderr(EX_OSFILE, "can't open /dev/urandom: %s\n", strerror(errno)); 889 else if (read(fd, buf, len)!=len) 890 cmderr(EX_IOERR, "read error on /dev/urandom\n"); 891 close(fd); 892 return buf; 893} 894 895#endif 896 897#else /* Portable version */ 898 899static u_char * 900pw_getrand(u_char *buf, int len) 901{ 902 int i; 903 904 for (i = 0; i < len; i++) { 905 unsigned val = random(); 906 /* Use all bits in the random value */ 907 buf[i]=(u_char)((val >> 24) ^ (val >> 16) ^ (val >> 8) ^ val); 908 } 909 return buf; 910} 911 912#endif 913 914static char * 915pw_password(struct userconf * cnf, struct cargs * args, char const * user) 916{ 917 int i, l; 918 char pwbuf[32]; 919 u_char rndbuf[sizeof pwbuf]; 920 921 switch (cnf->default_password) { 922 case -1: /* Random password */ 923 srandom((unsigned) (time(NULL) ^ getpid())); 924 l = (random() % 8 + 8); /* 8 - 16 chars */ 925 pw_getrand(rndbuf, l); 926 for (i = 0; i < l; i++) 927 pwbuf[i] = chars[rndbuf[i] % sizeof(chars)]; 928 pwbuf[i] = '\0'; 929 930 /* 931 * We give this information back to the user 932 */ 933 if (getarg(args, 'h') == NULL && getarg(args, 'N') == NULL) { 934 if (isatty(1)) 935 printf("Password for '%s' is: ", user); 936 printf("%s\n", pwbuf); 937 fflush(stdout); 938 } 939 break; 940 941 case -2: /* No password at all! */ 942 return ""; 943 944 case 0: /* No login - default */ 945 default: 946 return "*"; 947 948 case 1: /* user's name */ 949 strncpy(pwbuf, user, sizeof pwbuf); 950 pwbuf[sizeof pwbuf - 1] = '\0'; 951 break; 952 } 953 return pw_pwcrypt(pwbuf); 954} 955 956 957static int 958print_user(struct passwd * pwd, int pretty) 959{ 960 if (!pretty) { 961 char buf[_UC_MAXLINE]; 962 963 fmtpwent(buf, pwd); 964 fputs(buf, stdout); 965 } else { 966 int j; 967 char *p; 968 struct group *grp = getgrgid(pwd->pw_gid); 969 char uname[60] = "User &", office[60] = "[None]", 970 wphone[60] = "[None]", hphone[60] = "[None]"; 971 char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 972 struct tm * tptr; 973 974 if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 975 strncpy(uname, p, sizeof uname); 976 uname[sizeof uname - 1] = '\0'; 977 if ((p = strtok(NULL, ",")) != NULL) { 978 strncpy(office, p, sizeof office); 979 office[sizeof office - 1] = '\0'; 980 if ((p = strtok(NULL, ",")) != NULL) { 981 strncpy(wphone, p, sizeof wphone); 982 wphone[sizeof wphone - 1] = '\0'; 983 if ((p = strtok(NULL, "")) != NULL) { 984 strncpy(hphone, p, sizeof hphone); 985 hphone[sizeof hphone - 1] = '\0'; 986 } 987 } 988 } 989 } 990 /* 991 * Handle '&' in gecos field 992 */ 993 if ((p = strchr(uname, '&')) != NULL) { 994 int l = strlen(pwd->pw_name); 995 int m = strlen(p); 996 997 memmove(p + l, p + 1, m); 998 memmove(p, pwd->pw_name, l); 999 *p = (char) toupper(*p); 1000 } 1001 if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 1002 strftime(acexpire, sizeof acexpire, "%c", tptr); 1003 if (pwd->pw_change > (time_t)9 && (tptr = localtime(&pwd->pw_change)) != NULL) 1004 strftime(pwexpire, sizeof pwexpire, "%c", tptr); 1005 printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n" 1006 " Full Name: %s\n" 1007 " Home: %-26.26s Class: %s\n" 1008 " Shell: %-26.26s Office: %s\n" 1009 "Work Phone: %-26.26s Home Phone: %s\n" 1010 "Acc Expire: %-26.26s Pwd Expire: %s\n", 1011 pwd->pw_name, (long) pwd->pw_uid, 1012 grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid, 1013 uname, pwd->pw_dir, pwd->pw_class, 1014 pwd->pw_shell, office, wphone, hphone, 1015 acexpire, pwexpire); 1016 setgrent(); 1017 j = 0; 1018 while ((grp=getgrent()) != NULL) 1019 { 1020 int i = 0; 1021 while (grp->gr_mem[i] != NULL) 1022 { 1023 if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1024 { 1025 printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1026 break; 1027 } 1028 ++i; 1029 } 1030 } 1031 endgrent(); 1032 printf("%s\n", j ? "\n" : ""); 1033 } 1034 return EXIT_SUCCESS; 1035} 1036 1037char * 1038pw_checkname(u_char *name, int gecos) 1039{ 1040 int l = 0; 1041 char const *notch = gecos ? ":!@" : " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1042 1043 while (name[l]) { 1044 if (strchr(notch, name[l]) != NULL || name[l] < ' ' || name[l] == 127 || 1045 (!gecos && l==0 && name[l] == '-') || /* leading '-' */ 1046 (!gecos && name[l] & 0x80)) /* 8-bit */ 1047 cmderr(EX_DATAERR, (name[l] >= ' ' && name[l] < 127) 1048 ? "invalid character `%c' in field\n" 1049 : "invalid character 0x%02x in field\n", 1050 name[l]); 1051 ++l; 1052 } 1053 if (!gecos && l > LOGNAMESIZE) 1054 cmderr(EX_DATAERR, "name too long `%s'\n", name); 1055 return (char *)name; 1056} 1057 1058 1059static void 1060rmat(uid_t uid) 1061{ 1062 DIR *d = opendir("/var/at/jobs"); 1063 1064 if (d != NULL) { 1065 struct dirent *e; 1066 1067 while ((e = readdir(d)) != NULL) { 1068 struct stat st; 1069 1070 if (strncmp(e->d_name, ".lock", 5) != 0 && 1071 stat(e->d_name, &st) == 0 && 1072 !S_ISDIR(st.st_mode) && 1073 st.st_uid == uid) { 1074 char tmp[MAXPATHLEN]; 1075 1076 sprintf(tmp, "/usr/bin/atrm %s", e->d_name); 1077 system(tmp); 1078 } 1079 } 1080 closedir(d); 1081 } 1082} 1083 1084static void 1085rmskey(char const * name) 1086{ 1087 static const char etcskey[] = "/etc/skeykeys"; 1088 FILE *fp = fopen(etcskey, "r+"); 1089 1090 if (fp != NULL) { 1091 char tmp[1024]; 1092 off_t atofs = 0; 1093 int length = strlen(name); 1094 1095 while (fgets(tmp, sizeof tmp, fp) != NULL) { 1096 if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 1097 if (fseek(fp, atofs, SEEK_SET) == 0) { 1098 fwrite("#", 1, 1, fp); /* Comment username out */ 1099 } 1100 break; 1101 } 1102 atofs = ftell(fp); 1103 } 1104 /* 1105 * If we got an error of any sort, don't update! 1106 */ 1107 fclose(fp); 1108 } 1109} 1110 1111