/*- * Copyright (C) 1996 * David L. Nugent. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $Id: pw_user.c,v 1.1.1.2 1996/12/09 23:55:10 joerg Exp $ */ #include #include #include #include #include #include #include #include "pw.h" #include "bitmap.h" #include "pwupd.h" static int print_user(struct passwd * pwd, int pretty); static uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args); static uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer); static time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args); static time_t pw_exppolicy(struct userconf * cnf, struct cargs * args); static char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user); static char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell); static char *pw_password(struct userconf * cnf, struct cargs * args, char const * user); static char *pw_checkname(char *name, int gecos); static char *shell_path(char const * path, char *shells[], char *sh); static void rmat(uid_t uid); /*- * -C config configuration file * -q quiet operation * -n name login name * -u uid user id * -c comment user name/comment * -d directory home directory * -e date account expiry date * -p date password expiry date * -g grp primary group * -G grp1,grp2 additional groups * -m [ -k dir ] create and set up home * -s shell name of login shell * -o duplicate uid ok * -L class user class * -l name new login name * -h fd password filehandle * -F force print or add * Setting defaults: * -D set user defaults * -b dir default home root dir * -e period default expiry period * -p period default password change period * -g group default group * -G grp1,grp2.. default additional groups * -L class default login class * -k dir default home skeleton * -s shell default shell * -w method default password method */ int pw_user(struct userconf * cnf, int mode, struct cargs * args) { char *p = NULL; struct carg *a_name; struct carg *a_uid; struct carg *arg; struct passwd *pwd = NULL; struct group *grp; struct stat st; char line[MAXPWLINE]; static struct passwd fakeuser = { NULL, "*", -1, -1, 0, "", "User &", "/bin/sh", 0, 0 }; /* * With M_NEXT, we only need to return the * next uid to stdout */ if (mode == M_NEXT) { uid_t next = pw_uidpolicy(cnf, args); if (getarg(args, 'q')) return next; printf("%ld:", (long)next); pw_group(cnf, mode, args); return EXIT_SUCCESS; } /* * We can do all of the common legwork here */ if ((arg = getarg(args, 'b')) != NULL) { cnf->home = arg->val; if (stat(cnf->home, &st) == -1 || !S_ISDIR(st.st_mode)) cmderr(EX_OSFILE, "root home `%s' is not a directory or does not exist\n", cnf->home); } if ((arg = getarg(args, 'e')) != NULL) cnf->expire_days = atoi(arg->val); if ((arg = getarg(args, 'p')) != NULL && arg->val) cnf->password_days = atoi(arg->val); if ((arg = getarg(args, 'g')) != NULL) { p = arg->val; if ((grp = getgrnam(p)) == NULL) { if (!isdigit(*p) || (grp = getgrgid((gid_t) atoi(p))) == NULL) cmderr(EX_NOUSER, "group `%s' does not exist\n", p); } cnf->default_group = newstr(grp->gr_name); } if ((arg = getarg(args, 'L')) != NULL) cnf->default_class = pw_checkname(arg->val, 0); if ((arg = getarg(args, 'G')) != NULL && arg->val) { int i = 0; for (p = strtok(arg->val, ", \t"); i < _UC_MAXGROUPS && p != NULL; p = strtok(NULL, ", \t")) { if ((grp = getgrnam(p)) == NULL) { if (!isdigit(*p) || (grp = getgrgid((gid_t) atoi(p))) == NULL) cmderr(EX_NOUSER, "group `%s' does not exist\n", p); } cnf->groups[i++] = newstr(grp->gr_name); } while (i < _UC_MAXGROUPS) cnf->groups[i++] = NULL; } if ((arg = getarg(args, 'k')) != NULL) { if (stat(cnf->dotdir = arg->val, &st) == -1 || S_ISDIR(st.st_mode)) cmderr(EX_OSFILE, "skeleton `%s' is not a directory or does not exist\n", cnf->dotdir); } if ((arg = getarg(args, 's')) != NULL) cnf->shell_default = arg->val; if (mode == M_ADD && getarg(args, 'D')) { if (getarg(args, 'n') != NULL) cmderr(EX_DATAERR, "can't combine `-D' with `-n name'\n"); if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { if ((cnf->min_uid = (uid_t) atoi(p)) == 0) cnf->min_uid = 1000; if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) cnf->max_uid = 32000; } if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { if ((cnf->min_gid = (gid_t) atoi(p)) == 0) cnf->min_gid = 1000; if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) cnf->max_gid = 32000; } if ((arg = getarg(args, 'w')) != NULL) cnf->default_password = boolean_val(arg->val, cnf->default_password); arg = getarg(args, 'C'); if (write_userconfig(arg ? arg->val : NULL)) return EXIT_SUCCESS; perror("config update"); return EX_IOERR; } if (mode == M_PRINT && getarg(args, 'a')) { int pretty = getarg(args, 'P') != NULL; setpwent(); while ((pwd = getpwent()) != NULL) print_user(pwd, pretty); endpwent(); return EXIT_SUCCESS; } if ((a_name = getarg(args, 'n')) != NULL) pwd = getpwnam(pw_checkname(a_name->val, 0)); a_uid = getarg(args, 'u'); if (a_uid == NULL) { if (a_name == NULL) cmderr(EX_DATAERR, "user name or id required\n"); /* * Determine whether 'n' switch is name or uid - we don't * really don't really care which we have, but we need to * know. */ if (mode != M_ADD && pwd == NULL && isdigit(*a_name->val) && atoi(a_name->val) > 0) { /* Assume uid */ (a_uid = a_name)->ch = 'u'; a_name = NULL; } } /* * Update, delete & print require that the user exists */ if (mode == M_UPDATE || mode == M_DELETE || mode == M_PRINT) { if (a_name == NULL && pwd == NULL) /* Try harder */ pwd = getpwuid(atoi(a_uid->val)); if (pwd == NULL) { if (mode == M_PRINT && getarg(args, 'F')) { fakeuser.pw_name = a_name ? a_name->val : "nouser"; fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1; return print_user(&fakeuser, getarg(args, 'P') != NULL); } if (a_name == NULL) cmderr(EX_NOUSER, "no such uid `%s'\n", a_uid->val); cmderr(EX_NOUSER, "no such user `%s'\n", a_name->val); } if (a_name == NULL) /* May be needed later */ a_name = addarg(args, 'n', newstr(pwd->pw_name)); /* * Handle deletions now */ if (mode == M_DELETE) { char file[MAXPATHLEN]; char home[MAXPATHLEN]; uid_t uid = pwd->pw_uid; if (strcmp(pwd->pw_name, "root") == 0) cmderr(EX_DATAERR, "cannot remove user 'root'\n"); /* * Remove crontabs */ sprintf(file, "/var/cron/tabs/%s", pwd->pw_name); if (access(file, F_OK) == 0) { sprintf(file, "crontab -u %s -r", pwd->pw_name); system(file); } /* * Save these for later, since contents of pwd may be * invalidated by deletion */ sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name); strncpy(home, pwd->pw_dir, sizeof home); home[sizeof home - 1] = '\0'; if (!delpwent(pwd)) cmderr(EX_IOERR, "Error updating passwd file: %s\n", strerror(errno)); editgroups(a_name->val, NULL); pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid); /* * Remove mail file */ remove(file); /* * Remove at jobs */ if (getpwuid(uid) == NULL) rmat(uid); /* * Remove home directory and contents */ if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) { if (stat(home, &st) != -1) { rm_r(home, uid); pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved", a_name->val, (long) uid, home, stat(home, &st) == -1 ? "" : "not completely "); } } return EXIT_SUCCESS; } else if (mode == M_PRINT) return print_user(pwd, getarg(args, 'P') != NULL); /* * The rest is edit code */ if ((arg = getarg(args, 'l')) != NULL) { if (strcmp(pwd->pw_name, "root") == 0) cmderr(EX_DATAERR, "can't rename `root' account\n"); pwd->pw_name = pw_checkname(arg->val, 0); } if ((arg = getarg(args, 'u')) != NULL && isdigit(*arg->val)) { pwd->pw_uid = (uid_t) atol(arg->val); if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) cmderr(EX_DATAERR, "can't change uid of `root' account\n"); if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) fprintf(stderr, "WARNING: account `%s' will have a uid of 0 (superuser access!)\n", pwd->pw_name); } if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) /* Already checked this */ pwd->pw_gid = (gid_t) getgrnam(cnf->default_group)->gr_gid; if ((arg = getarg(args, 'p')) != NULL) { if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) pwd->pw_change = 0; else { time_t now = time(NULL); time_t expire = parse_date(now, arg->val); if (now == expire) cmderr(EX_DATAERR, "Invalid password change date `%s'\n", arg->val); pwd->pw_change = expire; } } if ((arg = getarg(args, 'e')) != NULL) { if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) pwd->pw_expire = 0; else { time_t now = time(NULL); time_t expire = parse_date(now, arg->val); if (now == expire) cmderr(EX_DATAERR, "Invalid account expiry date `%s'\n", arg->val); pwd->pw_expire = expire; } } if ((arg = getarg(args, 's')) != NULL) pwd->pw_shell = shell_path(cnf->shelldir, cnf->shells, arg->val); if (getarg(args, 'L')) pwd->pw_class = cnf->default_class; if ((arg = getarg(args, 'w')) != NULL && getarg(args, 'h') == NULL) pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); } else { if (a_name == NULL) /* Required */ cmderr(EX_DATAERR, "login name required\n"); else if ((pwd = getpwnam(a_name->val)) != NULL) /* Exists */ cmderr(EX_DATAERR, "login name `%s' already exists\n", a_name->val); /* * Now, set up defaults for a new user */ pwd = &fakeuser; pwd->pw_name = a_name->val; pwd->pw_class = cnf->default_class ? cnf->default_class : ""; pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); pwd->pw_uid = pw_uidpolicy(cnf, args); pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid); pwd->pw_change = pw_pwdpolicy(cnf, args); pwd->pw_expire = pw_exppolicy(cnf, args); pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) fprintf(stderr, "WARNING: new account `%s' has a uid of 0 (superuser access!)\n", pwd->pw_name); } /* * Shared add/edit code */ if ((arg = getarg(args, 'c')) != NULL) pwd->pw_gecos = pw_checkname(arg->val, 1); if ((arg = getarg(args, 'h')) != NULL) { if (strcmp(arg->val, "-") == 0) pwd->pw_passwd = "*"; /* No access */ else { int fd = atoi(arg->val); int b; int istty = isatty(fd); struct termios t; if (istty) { if (tcgetattr(fd, &t) == -1) istty = 0; else { struct termios n = t; /* Disable echo */ n.c_lflag &= ~(ECHO); tcsetattr(fd, TCSANOW, &n); printf("%sassword for user %s:", (mode == M_UPDATE) ? "New p" : "P", pwd->pw_name); fflush(stdout); } } b = read(fd, line, sizeof(line) - 1); if (istty) { /* Restore state */ tcsetattr(fd, TCSANOW, &t); fputc('\n', stdout); fflush(stdout); } if (b < 0) { perror("-h file descriptor"); return EX_IOERR; } line[b] = '\0'; if ((p = strpbrk(line, " \t\r\n")) != NULL) *p = '\0'; if (!*line) cmderr(EX_DATAERR, "empty password read on file descriptor %d\n", fd); pwd->pw_passwd = pw_pwcrypt(line); } } /* * Special case: -N only displays & exits */ if (getarg(args, 'N') != NULL) return print_user(pwd, getarg(args, 'P') != NULL); if ((mode == M_ADD && !addpwent(pwd)) || (mode == M_UPDATE && !chgpwent(a_name->val, pwd))) { perror("password update"); return EX_IOERR; } /* * Ok, user is created or changed - now edit group file */ if (mode == M_ADD || getarg(args, 'G') != NULL) editgroups(pwd->pw_name, cnf->groups); /* pwd may have been invalidated */ if ((pwd = getpwnam(a_name->val)) == NULL) cmderr(EX_NOUSER, "user '%s' disappeared during update\n", a_name->val); grp = getgrgid(pwd->pw_gid); pw_log(cnf, mode, W_USER, "%s(%ld):%s(%d):%s:%s:%s", pwd->pw_name, (long) pwd->pw_uid, grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1), pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); /* * If adding, let's touch and chown the user's mail file. This is not * strictly necessary under BSD with a 0755 maildir but it also * doesn't hurt anything to create the empty mailfile */ if (mode == M_ADD) { FILE *fp; sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name); close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents & * mtime */ chown(line, pwd->pw_uid, pwd->pw_gid); /* * Send mail to the new user as well, if we are asked to */ if (cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); if (pfp == NULL) perror("sendmail"); else { fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); while (fgets(line, sizeof(line), fp) != NULL) { /* Do substitutions? */ fputs(line, pfp); } pclose(pfp); pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent", pwd->pw_name, (long) pwd->pw_uid); } fclose(fp); } } /* * Finally, let's create and populate the user's home directory. Note * that this also `works' for editing users if -m is used, but * existing files will *not* be overwritten. */ if (getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) { copymkdir(pwd->pw_dir, cnf->dotdir, 0755, pwd->pw_uid, pwd->pw_gid); pw_log(cnf, mode, W_USER, "%s(%ld) home %s made", pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir); } return EXIT_SUCCESS; } static uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args) { struct passwd *pwd; uid_t uid = (uid_t) - 1; struct carg *a_uid = getarg(args, 'u'); /* * Check the given uid, if any */ if (a_uid != NULL) { uid = (uid_t) atol(a_uid->val); if ((pwd = getpwuid(uid)) != NULL && getarg(args, 'o') == NULL) cmderr(EX_DATAERR, "uid `%ld' has already been allocated\n", (long) pwd->pw_uid); } else { struct bitmap bm; /* * We need to allocate the next available uid under one of * two policies a) Grab the first unused uid b) Grab the * highest possible unused uid */ if (cnf->min_uid >= cnf->max_uid) { /* Sanity * claus^H^H^H^Hheck */ cnf->min_uid = 1000; cnf->max_uid = 32000; } bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); /* * Now, let's fill the bitmap from the password file */ setpwent(); while ((pwd = getpwent()) != NULL) if (pwd->pw_uid >= (int) cnf->min_uid && pwd->pw_uid <= (int) cnf->max_uid) bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); endpwent(); /* * Then apply the policy, with fallback to reuse if necessary */ if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); /* * Another sanity check */ if (uid < cnf->min_uid || uid > cnf->max_uid) cmderr(EX_SOFTWARE, "unable to allocate a new uid - range fully used\n"); bm_dealloc(&bm); } return uid; } static uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer) { struct group *grp; gid_t gid = (uid_t) - 1; struct carg *a_gid = getarg(args, 'g'); /* * If no arg given, see if default can help out */ if (a_gid == NULL && cnf->default_group && *cnf->default_group) a_gid = addarg(args, 'g', cnf->default_group); /* * Check the given gid, if any */ setgrent(); if (a_gid != NULL) { if ((grp = getgrnam(a_gid->val)) == NULL) { gid = (gid_t) atol(a_gid->val); if ((gid == 0 && !isdigit(*a_gid->val)) || (grp = getgrgid(gid)) == NULL) cmderr(EX_NOUSER, "group `%s' is not defined\n", a_gid->val); } gid = grp->gr_gid; } else if ((grp = getgrnam(nam)) != NULL && grp->gr_mem[0] == NULL) { gid = grp->gr_gid; /* Already created? Use it anyway... */ } else { struct cargs grpargs; char tmp[32]; LIST_INIT(&grpargs); addarg(&grpargs, 'n', nam); /* * We need to auto-create a group with the user's name. We * can send all the appropriate output to our sister routine * bit first see if we can create a group with gid==uid so we * can keep the user and group ids in sync. We purposely do * NOT check the gid range if we can force the sync. If the * user's name dups an existing group, then the group add * function will happily handle that case for us and exit. */ if (getgrgid(prefer) == NULL) { sprintf(tmp, "%lu", (unsigned long) prefer); addarg(&grpargs, 'g', tmp); } if (getarg(args, 'N')) { addarg(&grpargs, 'N', NULL); addarg(&grpargs, 'q', NULL); gid = pw_group(cnf, M_NEXT, &grpargs); } else { pw_group(cnf, M_ADD, &grpargs); if ((grp = getgrnam(nam)) != NULL) gid = grp->gr_gid; } a_gid = grpargs.lh_first; while (a_gid != NULL) { struct carg *t = a_gid->list.le_next; LIST_REMOVE(a_gid, list); a_gid = t; } } endgrent(); return gid; } static time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args) { time_t result = 0; time_t now = time(NULL); struct carg *arg = getarg(args, 'e'); if (arg != NULL) { if ((result = parse_date(now, arg->val)) == now) cmderr(EX_DATAERR, "invalid date/time `%s'\n", arg->val); } else if (cnf->password_days > 0) result = now + ((long) cnf->password_days * 86400L); return result; } static time_t pw_exppolicy(struct userconf * cnf, struct cargs * args) { time_t result = 0; time_t now = time(NULL); struct carg *arg = getarg(args, 'e'); if (arg != NULL) { if ((result = parse_date(now, arg->val)) == now) cmderr(EX_DATAERR, "invalid date/time `%s'\n", arg->val); } else if (cnf->expire_days > 0) result = now + ((long) cnf->expire_days * 86400L); return result; } static char * pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) { struct carg *arg = getarg(args, 'd'); if (arg) return arg->val; else { static char home[128]; if (cnf->home == NULL || *cnf->home == '\0') cmderr(EX_CONFIG, "no base home directory set\n"); sprintf(home, "%s/%s", cnf->home, user); return home; } } static char * shell_path(char const * path, char *shells[], char *sh) { if (sh != NULL && (*sh == '/' || *sh == '\0')) return sh; /* specified full path or forced none */ else { char *p; char paths[_UC_MAXLINE]; /* * We need to search paths */ strncpy(paths, path, sizeof paths); paths[sizeof paths - 1] = '\0'; for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { int i; static char shellpath[256]; if (sh != NULL) { sprintf(shellpath, "%s/%s", p, sh); if (access(shellpath, X_OK) == 0) return shellpath; } else for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { sprintf(shellpath, "%s/%s", p, shells[i]); if (access(shellpath, X_OK) == 0) return shellpath; } } if (sh == NULL) cmderr(EX_OSFILE, "can't find shell `%s' in shell paths\n", sh); cmderr(EX_CONFIG, "no default shell available or defined\n"); return NULL; } } static char * pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) { char *sh = newshell; struct carg *arg = getarg(args, 's'); if (newshell == NULL && arg != NULL) sh = arg->val; return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); } static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ."; char * pw_pwcrypt(char *password) { int i; char salt[12]; static char buf[256]; /* * Calculate a salt value */ srandom((unsigned) (time(NULL) | getpid())); for (i = 0; i < 8; i++) salt[i] = chars[random() % 63]; salt[i] = '\0'; return strcpy(buf, crypt(password, salt)); } static char * pw_password(struct userconf * cnf, struct cargs * args, char const * user) { int i, l; char pwbuf[32]; switch (cnf->default_password) { case -1: /* Random password */ srandom((unsigned) (time(NULL) | getpid())); l = (random() % 8 + 8); /* 8 - 16 chars */ for (i = 0; i < l; i++) pwbuf[i] = chars[random() % sizeof(chars)]; pwbuf[i] = '\0'; /* * We give this information back to the user */ if (getarg(args, 'h') == NULL && getarg(args, 'N') == NULL) { if (isatty(0)) printf("Password is: "); printf("%s\n", pwbuf); fflush(stdout); } break; case -2: /* No password at all! */ return ""; case 0: /* No login - default */ default: return "*"; case 1: /* user's name */ strncpy(pwbuf, user, sizeof pwbuf); pwbuf[sizeof pwbuf - 1] = '\0'; break; } return pw_pwcrypt(pwbuf); } static int print_user(struct passwd * pwd, int pretty) { if (!pretty) { char buf[_UC_MAXLINE]; fmtpwent(buf, pwd); fputs(buf, stdout); } else { int j; char *p; struct group *grp = getgrgid(pwd->pw_gid); char uname[60] = "User &", office[60] = "[None]", wphone[60] = "[None]", hphone[60] = "[None]"; if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { strncpy(uname, p, sizeof uname); uname[sizeof uname - 1] = '\0'; if ((p = strtok(NULL, ",")) != NULL) { strncpy(office, p, sizeof office); office[sizeof office - 1] = '\0'; if ((p = strtok(NULL, ",")) != NULL) { strncpy(wphone, p, sizeof wphone); wphone[sizeof wphone - 1] = '\0'; if ((p = strtok(NULL, "")) != NULL) { strncpy(hphone, p, sizeof hphone); hphone[sizeof hphone - 1] = '\0'; } } } } /* * Handle '&' in gecos field */ if ((p = strchr(uname, '&')) != NULL) { int l = strlen(pwd->pw_name); int m = strlen(p); memmove(p + l, p + 1, m); memmove(p, pwd->pw_name, l); *p = (char) toupper(*p); } printf("Login Name : %-10s #%-22ld Group : %-10s #%ld\n" " Full Name : %s\n" " Home : %-32.32s Class : %s\n" " Shell : %-32.32s Office : %s\n" "Work Phone : %-32.32s Home Phone : %s\n", pwd->pw_name, (long) pwd->pw_uid, grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid, uname, pwd->pw_dir, pwd->pw_class, pwd->pw_shell, office, wphone, hphone); setgrent(); j = 0; while ((grp=getgrent()) != NULL) { int i = 0; while (i < _UC_MAXGROUPS && grp->gr_mem[i] != NULL) { if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) { printf(j++ == 0 ? " Groups : %s" : ",%s", grp->gr_name); break; } ++i; } } endgrent(); printf("%s\n", j ? "\n" : ""); } return EXIT_SUCCESS; } static char * pw_checkname(char *name, int gecos) { int l = 0; char const *notch = gecos ? ":" : " :+-&#%$^()!@~*?<>=|\\/\""; while (name[l]) { if (strchr(notch, name[l]) != NULL || name[l] < ' ') cmderr(EX_DATAERR, "invalid character `%c' in field\n", name[l]); ++l; } if (!gecos && l > 8) cmderr(EX_DATAERR, "name too long `%s'\n", name); return name; } static void rmat(uid_t uid) { DIR *d = opendir("/var/at/jobs"); if (d != NULL) { struct dirent *e; while ((e = readdir(d)) != NULL) { struct stat st; if (strncmp(e->d_name, ".lock", 5) != 0 && stat(e->d_name, &st) == 0 && !S_ISDIR(st.st_mode) && st.st_uid == uid) { char tmp[MAXPATHLEN]; sprintf(tmp, "/usr/bin/atrm %s", e->d_name); system(tmp); } } closedir(d); } }