diff options
Diffstat (limited to 'pw/pw_user.c')
| -rw-r--r-- | pw/pw_user.c | 1274 |
1 files changed, 0 insertions, 1274 deletions
diff --git a/pw/pw_user.c b/pw/pw_user.c deleted file mode 100644 index c8364ca..0000000 --- a/pw/pw_user.c +++ /dev/null @@ -1,1274 +0,0 @@ -/*- - * Copyright (C) 1996 - * David L. Nugent. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - */ - -#ifndef lint -static const char rcsid[] = - "$FreeBSD$"; -#endif /* not lint */ - -#include <ctype.h> -#include <err.h> -#include <fcntl.h> -#include <sys/param.h> -#include <dirent.h> -#include <paths.h> -#include <termios.h> -#include <sys/types.h> -#include <sys/time.h> -#include <sys/resource.h> -#include <unistd.h> -#include <login_cap.h> -#include "pw.h" -#include "bitmap.h" - -#define LOGNAMESIZE (MAXLOGNAME-1) - -static char locked_str[] = "*LOCKED*"; - -static int print_user(struct passwd * pwd, int pretty, int v7); -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 *shell_path(char const * path, char *shells[], char *sh); -static void rmat(uid_t uid); -static void rmopie(char const * name); - -/*- - * -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 - * -H fd encrypted 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) -{ - int rc, edited = 0; - char *p = NULL; - char *passtmp; - struct carg *a_name; - struct carg *a_uid; - struct carg *arg; - struct passwd *pwd = NULL; - struct group *grp; - struct stat st; - char line[_PASSWORD_LEN+1]; - FILE *fp; - mode_t dmode; - char *dmode_c; - void *set = NULL; - - static struct passwd fakeuser = - { - NULL, - "*", - -1, - -1, - 0, - "", - "User &", - "/nonexistent", - "/bin/sh", - 0 -#if defined(__FreeBSD__) - ,0 -#endif - }; - - - /* - * 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 ((arg = getarg(args, 'M')) != NULL) { - dmode_c = arg->val; - if ((set = setmode(dmode_c)) == NULL) - errx(EX_DATAERR, "invalid directory creation mode '%s'", - dmode_c); - dmode = getmode(set, S_IRWXU | S_IRWXG | S_IRWXO); - free(set); - cnf->homemode = dmode; - } - - /* - * If we'll need to use it or we're updating it, - * then create the base home directory if necessary - */ - if (arg != NULL || getarg(args, 'm') != NULL) { - int l = strlen(cnf->home); - - if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ - cnf->home[--l] = '\0'; - - if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ - errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); - - if (stat(cnf->home, &st) == -1) { - char dbuf[MAXPATHLEN]; - - /* - * This is a kludge especially for Joerg :) - * If the home directory would be created in the root partition, then - * we really create it under /usr which is likely to have more space. - * But we create a symlink from cnf->home -> "/usr" -> cnf->home - */ - if (strchr(cnf->home+1, '/') == NULL) { - strcpy(dbuf, "/usr"); - strncat(dbuf, cnf->home, MAXPATHLEN-5); - if (mkdir(dbuf, cnf->homemode) != -1 || errno == EEXIST) { - chown(dbuf, 0, 0); - /* - * Skip first "/" and create symlink: - * /home -> usr/home - */ - symlink(dbuf+1, cnf->home); - } - /* If this falls, fall back to old method */ - } - strlcpy(dbuf, cnf->home, sizeof(dbuf)); - p = dbuf; - if (stat(dbuf, &st) == -1) { - while ((p = strchr(++p, '/')) != NULL) { - *p = '\0'; - if (stat(dbuf, &st) == -1) { - if (mkdir(dbuf, cnf->homemode) == -1) - goto direrr; - chown(dbuf, 0, 0); - } else if (!S_ISDIR(st.st_mode)) - errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); - *p = '/'; - } - } - if (stat(dbuf, &st) == -1) { - if (mkdir(dbuf, cnf->homemode) == -1) { - direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); - } - chown(dbuf, 0, 0); - } - } else if (!S_ISDIR(st.st_mode)) - errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); - } - - if ((arg = getarg(args, 'e')) != NULL) - cnf->expire_days = atoi(arg->val); - - if ((arg = getarg(args, 'y')) != NULL) - cnf->nispasswd = arg->val; - - if ((arg = getarg(args, 'p')) != NULL && arg->val) - cnf->password_days = atoi(arg->val); - - if ((arg = getarg(args, 'g')) != NULL) { - if (!*(p = arg->val)) /* Handle empty group list specially */ - cnf->default_group = ""; - else { - if ((grp = GETGRNAM(p)) == NULL) { - if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) - errx(EX_NOUSER, "group `%s' does not exist", p); - } - cnf->default_group = newstr(grp->gr_name); - } - } - if ((arg = getarg(args, 'L')) != NULL) - cnf->default_class = pw_checkname((u_char *)arg->val, 0); - - if ((arg = getarg(args, 'G')) != NULL && arg->val) { - int i = 0; - - for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { - if ((grp = GETGRNAM(p)) == NULL) { - if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) - errx(EX_NOUSER, "group `%s' does not exist", p); - } - if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) - cnf->groups[i++] = newstr(grp->gr_name); - } - while (i < cnf->numgroups) - cnf->groups[i++] = NULL; - } - - if ((arg = getarg(args, 'k')) != NULL) { - if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) - errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); - } - - if ((arg = getarg(args, 's')) != NULL) - cnf->shell_default = arg->val; - - if ((arg = getarg(args, 'w')) != NULL) - cnf->default_password = boolean_val(arg->val, cnf->default_password); - if (mode == M_ADD && getarg(args, 'D')) { - if (getarg(args, 'n') != NULL) - errx(EX_DATAERR, "can't combine `-D' with `-n name'"); - 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; - } - - arg = getarg(args, 'C'); - if (write_userconfig(arg ? arg->val : NULL)) - return EXIT_SUCCESS; - warn("config update"); - return EX_IOERR; - } - - if (mode == M_PRINT && getarg(args, 'a')) { - int pretty = getarg(args, 'P') != NULL; - int v7 = getarg(args, '7') != NULL; - - SETPWENT(); - while ((pwd = GETPWENT()) != NULL) - print_user(pwd, pretty, v7); - ENDPWENT(); - return EXIT_SUCCESS; - } - - if ((a_name = getarg(args, 'n')) != NULL) - pwd = GETPWNAM(pw_checkname((u_char *)a_name->val, 0)); - a_uid = getarg(args, 'u'); - - if (a_uid == NULL) { - if (a_name == NULL) - errx(EX_DATAERR, "user name or id required"); - - /* - * 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 - && strspn(a_name->val, "0123456789") == strlen(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 || mode == M_LOCK || mode == M_UNLOCK) { - - 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, - getarg(args, '7') != NULL); - } - if (a_name == NULL) - errx(EX_NOUSER, "no such uid `%s'", a_uid->val); - errx(EX_NOUSER, "no such user `%s'", a_name->val); - } - - if (a_name == NULL) /* May be needed later */ - a_name = addarg(args, 'n', newstr(pwd->pw_name)); - - /* - * The M_LOCK and M_UNLOCK functions simply add or remove - * a "*LOCKED*" prefix from in front of the password to - * prevent it decoding correctly, and therefore prevents - * access. Of course, this only prevents access via - * password authentication (not ssh, kerberos or any - * other method that does not use the UNIX password) but - * that is a known limitation. - */ - - if (mode == M_LOCK) { - if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) - errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); - passtmp = malloc(strlen(pwd->pw_passwd) + sizeof(locked_str)); - if (passtmp == NULL) /* disaster */ - errx(EX_UNAVAILABLE, "out of memory"); - strcpy(passtmp, locked_str); - strcat(passtmp, pwd->pw_passwd); - pwd->pw_passwd = passtmp; - edited = 1; - } else if (mode == M_UNLOCK) { - if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) - errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); - pwd->pw_passwd += sizeof(locked_str)-1; - edited = 1; - } else if (mode == M_DELETE) { - /* - * Handle deletions now - */ - char file[MAXPATHLEN]; - char home[MAXPATHLEN]; - uid_t uid = pwd->pw_uid; - - if (strcmp(pwd->pw_name, "root") == 0) - errx(EX_DATAERR, "cannot remove user 'root'"); - - if (!PWALTDIR()) { - /* - * Remove opie record from /etc/opiekeys - */ - - rmopie(pwd->pw_name); - - /* - * 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); - strlcpy(home, pwd->pw_dir, sizeof(home)); - - rc = delpwent(pwd); - if (rc == -1) - err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); - else if (rc != 0) { - warn("passwd update"); - return EX_IOERR; - } - - if (cnf->nispasswd && *cnf->nispasswd=='/') { - rc = delnispwent(cnf->nispasswd, a_name->val); - if (rc == -1) - warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); - else if (rc != 0) - warn("WARNING: NIS passwd update"); - /* non-fatal */ - } - - editgroups(a_name->val, NULL); - - pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid); - - if (!PWALTDIR()) { - /* - * 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, - getarg(args, '7') != NULL); - - /* - * The rest is edit code - */ - if ((arg = getarg(args, 'l')) != NULL) { - if (strcmp(pwd->pw_name, "root") == 0) - errx(EX_DATAERR, "can't rename `root' account"); - pwd->pw_name = pw_checkname((u_char *)arg->val, 0); - edited = 1; - } - - if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) { - pwd->pw_uid = (uid_t) atol(arg->val); - edited = 1; - if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) - errx(EX_DATAERR, "can't change uid of `root' account"); - if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) - warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); - } - - if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ - gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; - if (newgid != pwd->pw_gid) { - edited = 1; - pwd->pw_gid = newgid; - } - } - - if ((arg = getarg(args, 'p')) != NULL) { - if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { - if (pwd->pw_change != 0) { - pwd->pw_change = 0; - edited = 1; - } - } - else { - time_t now = time(NULL); - time_t expire = parse_date(now, arg->val); - - if (now == expire) - errx(EX_DATAERR, "invalid password change date `%s'", arg->val); - if (pwd->pw_change != expire) { - pwd->pw_change = expire; - edited = 1; - } - } - } - - if ((arg = getarg(args, 'e')) != NULL) { - if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { - if (pwd->pw_expire != 0) { - pwd->pw_expire = 0; - edited = 1; - } - } - else { - time_t now = time(NULL); - time_t expire = parse_date(now, arg->val); - - if (now == expire) - errx(EX_DATAERR, "invalid account expiry date `%s'", arg->val); - if (pwd->pw_expire != expire) { - pwd->pw_expire = expire; - edited = 1; - } - } - } - - if ((arg = getarg(args, 's')) != NULL) { - char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); - if (shell == NULL) - shell = ""; - if (strcmp(shell, pwd->pw_shell) != 0) { - pwd->pw_shell = shell; - edited = 1; - } - } - - if (getarg(args, 'L')) { - if (cnf->default_class == NULL) - cnf->default_class = ""; - if (strcmp(pwd->pw_class, cnf->default_class) != 0) { - pwd->pw_class = cnf->default_class; - edited = 1; - } - } - - if ((arg = getarg(args, 'd')) != NULL) { - if (strcmp(pwd->pw_dir, arg->val)) - edited = 1; - if (stat(pwd->pw_dir = arg->val, &st) == -1) { - if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) - warnx("WARNING: home `%s' does not exist", pwd->pw_dir); - } else if (!S_ISDIR(st.st_mode)) - warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); - } - - if ((arg = getarg(args, 'w')) != NULL && - getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) { - login_cap_t *lc; - - lc = login_getpwclass(pwd); - if (lc == NULL || - login_setcryptfmt(lc, "md5", NULL) == NULL) - warn("setting crypt(3) format"); - login_close(lc); - pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); - edited = 1; - } - - } else { - login_cap_t *lc; - - /* - * Add code - */ - - if (a_name == NULL) /* Required */ - errx(EX_DATAERR, "login name required"); - else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ - errx(EX_DATAERR, "login name `%s' already exists", 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_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); - lc = login_getpwclass(pwd); - if (lc == NULL || login_setcryptfmt(lc, "md5", NULL) == NULL) - warn("setting crypt(3) format"); - login_close(lc); - pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); - edited = 1; - - if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) - warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); - } - - /* - * Shared add/edit code - */ - if ((arg = getarg(args, 'c')) != NULL) { - char *gecos = pw_checkname((u_char *)arg->val, 1); - if (strcmp(pwd->pw_gecos, gecos) != 0) { - pwd->pw_gecos = gecos; - edited = 1; - } - } - - if ((arg = getarg(args, 'h')) != NULL || - (arg = getarg(args, 'H')) != NULL) { - if (strcmp(arg->val, "-") == 0) { - if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { - pwd->pw_passwd = "*"; /* No access */ - edited = 1; - } - } else { - int fd = atoi(arg->val); - int precrypt = (arg->ch == 'H'); - int b; - int istty = isatty(fd); - struct termios t; - login_cap_t *lc; - - 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("%s%spassword for user %s:", - (mode == M_UPDATE) ? "new " : "", - precrypt ? "encrypted " : "", - 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) { - warn("-%c file descriptor", precrypt ? 'H' : - 'h'); - return EX_IOERR; - } - line[b] = '\0'; - if ((p = strpbrk(line, "\r\n")) != NULL) - *p = '\0'; - if (!*line) - errx(EX_DATAERR, "empty password read on file descriptor %d", fd); - if (precrypt) { - if (strchr(line, ':') != NULL) - return EX_DATAERR; - pwd->pw_passwd = line; - } else { - lc = login_getpwclass(pwd); - if (lc == NULL || - login_setcryptfmt(lc, "md5", NULL) == NULL) - warn("setting crypt(3) format"); - login_close(lc); - pwd->pw_passwd = pw_pwcrypt(line); - } - edited = 1; - } - } - - /* - * Special case: -N only displays & exits - */ - if (getarg(args, 'N') != NULL) - return print_user(pwd, - getarg(args, 'P') != NULL, - getarg(args, '7') != NULL); - - if (mode == M_ADD) { - edited = 1; /* Always */ - rc = addpwent(pwd); - if (rc == -1) { - warnx("user '%s' already exists", pwd->pw_name); - return EX_IOERR; - } else if (rc != 0) { - warn("passwd file update"); - return EX_IOERR; - } - if (cnf->nispasswd && *cnf->nispasswd=='/') { - rc = addnispwent(cnf->nispasswd, pwd); - if (rc == -1) - warnx("User '%s' already exists in NIS passwd", pwd->pw_name); - else - warn("NIS passwd update"); - /* NOTE: we treat NIS-only update errors as non-fatal */ - } - } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { - if (edited) { /* Only updated this if required */ - rc = chgpwent(a_name->val, pwd); - if (rc == -1) { - warnx("user '%s' does not exist (NIS?)", pwd->pw_name); - return EX_IOERR; - } else if (rc != 0) { - warn("passwd file update"); - return EX_IOERR; - } - if ( cnf->nispasswd && *cnf->nispasswd=='/') { - rc = chgnispwent(cnf->nispasswd, a_name->val, pwd); - if (rc == -1) - warn("User '%s' not found in NIS passwd", pwd->pw_name); - else - warn("NIS passwd update"); - /* NOTE: NIS-only update errors are not fatal */ - } - } - } - - /* - * Ok, user is created or changed - now edit group file - */ - - if (mode == M_ADD || getarg(args, 'G') != NULL) - editgroups(pwd->pw_name, cnf->groups); - - /* go get a current version of pwd */ - pwd = GETPWNAM(a_name->val); - if (pwd == NULL) { - /* This will fail when we rename, so special case that */ - if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) { - a_name->val = arg->val; /* update new name */ - pwd = GETPWNAM(a_name->val); /* refetch renamed rec */ - } - } - if (pwd == NULL) /* can't go on without this */ - errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); - - grp = GETGRGID(pwd->pw_gid); - pw_log(cnf, mode, W_USER, "%s(%ld):%s(%ld):%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) { - if (!PWALTDIR()) { - 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); - } - } - - /* - * 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 (!PWALTDIR() && getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) { - copymkdir(pwd->pw_dir, cnf->dotdir, cnf->homemode, 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); - } - - - /* - * Finally, send mail to the new user as well, if we are asked to - */ - if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { - FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); - - if (pfp == NULL) - warn("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); - } - - 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) - errx(EX_DATAERR, "uid `%ld' has already been allocated", (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 >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) 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) - errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); - 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((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) - errx(EX_NOUSER, "group `%s' is not defined", 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 = LIST_FIRST(&grpargs); - while (a_gid != NULL) { - struct carg *t = LIST_NEXT(a_gid, list); - 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, 'p'); - - if (arg != NULL) { - if ((result = parse_date(now, arg->val)) == now) - errx(EX_DATAERR, "invalid date/time `%s'", 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) - errx(EX_DATAERR, "invalid date/time `%s'", 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') - errx(EX_CONFIG, "no base home directory set"); - 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 - */ - strlcpy(paths, path, sizeof(paths)); - 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) - errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); - errx(EX_CONFIG, "no default shell available or defined"); - 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); -} - -#define SALTSIZE 32 - -static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; - -char * -pw_pwcrypt(char *password) -{ - int i; - char salt[SALTSIZE + 1]; - - static char buf[256]; - - /* - * Calculate a salt value - */ - for (i = 0; i < SALTSIZE; i++) - salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; - salt[SALTSIZE] = '\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 */ - l = (arc4random() % 8 + 8); /* 8 - 16 chars */ - for (i = 0; i < l; i++) - pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; - pwbuf[i] = '\0'; - - /* - * We give this information back to the user - */ - if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL && - getarg(args, 'N') == NULL) { - if (isatty(STDOUT_FILENO)) - printf("Password for '%s' is: ", user); - 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 */ - strlcpy(pwbuf, user, sizeof(pwbuf)); - break; - } - return pw_pwcrypt(pwbuf); -} - - -static int -print_user(struct passwd * pwd, int pretty, int v7) -{ - if (!pretty) { - char buf[_UC_MAXLINE]; - - fmtpwentry(buf, pwd, v7 ? PWF_PASSWD : PWF_STANDARD); - 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]"; - char acexpire[32] = "[None]", pwexpire[32] = "[None]"; - struct tm * tptr; - - if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { - strlcpy(uname, p, sizeof(uname)); - if ((p = strtok(NULL, ",")) != NULL) { - strlcpy(office, p, sizeof(office)); - if ((p = strtok(NULL, ",")) != NULL) { - strlcpy(wphone, p, sizeof(wphone)); - if ((p = strtok(NULL, "")) != NULL) { - strlcpy(hphone, p, - sizeof(hphone)); - } - } - } - } - /* - * 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((unsigned char)*p); - } - if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) - strftime(acexpire, sizeof acexpire, "%c", tptr); - if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) - strftime(pwexpire, sizeof pwexpire, "%c", tptr); - printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n" - " Full Name: %s\n" - " Home: %-26.26s Class: %s\n" - " Shell: %-26.26s Office: %s\n" - "Work Phone: %-26.26s Home Phone: %s\n" - "Acc Expire: %-26.26s Pwd Expire: %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, - acexpire, pwexpire); - SETGRENT(); - j = 0; - while ((grp=GETGRENT()) != NULL) - { - int i = 0; - while (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", j ? "\n" : ""); - } - return EXIT_SUCCESS; -} - -char * -pw_checkname(u_char *name, int gecos) -{ - char showch[8]; - u_char const *badchars, *ch, *showtype; - int reject; - - ch = name; - reject = 0; - if (gecos) { - /* See if the name is valid as a gecos (comment) field. */ - badchars = ":!@"; - showtype = "gecos field"; - } else { - /* See if the name is valid as a userid or group. */ - badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; - showtype = "userid/group name"; - /* Userids and groups can not have a leading '-'. */ - if (*ch == '-') - reject = 1; - } - if (!reject) { - while (*ch) { - if (strchr(badchars, *ch) != NULL || *ch < ' ' || - *ch == 127) { - reject = 1; - break; - } - /* 8-bit characters are only allowed in GECOS fields */ - if (!gecos && (*ch & 0x80)) { - reject = 1; - break; - } - ch++; - } - } - /* - * A `$' is allowed as the final character for userids and groups, - * mainly for the benefit of samba. - */ - if (reject && !gecos) { - if (*ch == '$' && *(ch + 1) == '\0') { - reject = 0; - ch++; - } - } - if (reject) { - snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) - ? "`%c'" : "0x%02x", *ch); - errx(EX_DATAERR, "invalid character %s at position %d in %s", - showch, (ch - name), showtype); - } - if (!gecos && (ch - name) > LOGNAMESIZE) - errx(EX_DATAERR, "name too long `%s' (max is %d)", name, - LOGNAMESIZE); - return (char *)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); - } -} - -static void -rmopie(char const * name) -{ - static const char etcopie[] = "/etc/opiekeys"; - FILE *fp = fopen(etcopie, "r+"); - - if (fp != NULL) { - char tmp[1024]; - off_t atofs = 0; - int length = strlen(name); - - while (fgets(tmp, sizeof tmp, fp) != NULL) { - if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { - if (fseek(fp, atofs, SEEK_SET) == 0) { - fwrite("#", 1, 1, fp); /* Comment username out */ - } - break; - } - atofs = ftell(fp); - } - /* - * If we got an error of any sort, don't update! - */ - fclose(fp); - } -} - |