4fa0a39865
(opts): Add -d option. (GetPW): Add server parameter which is given to Net functions. (ChangePW): Ditto. (PrintPW): Ditto. (SetModals): Ditto. (usage): Add description for -d/--logonserver option. (main): Add option handling for -d/--logonserver. Use LOGONSERVER environment variable content for server to contact, unless -d/--logonserver option is given. If both is missing, use NULL.
562 lines
15 KiB
C
562 lines
15 KiB
C
/* passwd.c: Changing passwords and managing account information
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Copyright 1999, 2000, 2001, 2002, 2003 Red Hat, Inc.
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Written by Corinna Vinschen <corinna.vinschen@cityweb.de>
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include <windows.h>
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#include <wininet.h>
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#include <lmaccess.h>
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#include <lmerr.h>
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#include <lmcons.h>
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#include <lmapibuf.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <getopt.h>
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#include <pwd.h>
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#include <sys/cygwin.h>
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#include <sys/types.h>
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#include <time.h>
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#define USER_PRIV_ADMIN 2
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static const char version[] = "$Revision$";
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static char *prog_name;
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static struct option longopts[] =
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{
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{"cannot-change", no_argument, NULL, 'c'},
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{"can-change", no_argument, NULL, 'C'},
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{"logonserver", required_argument, NULL, 'd'},
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{"never-expires", no_argument, NULL, 'e'},
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{"expires", no_argument, NULL, 'E'},
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{"help", no_argument, NULL, 'h' },
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{"inactive", required_argument, NULL, 'i'},
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{"lock", no_argument, NULL, 'l'},
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{"minage", required_argument, NULL, 'n'},
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{"pwd-not-required", no_argument, NULL, 'p'},
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{"pwd-required", no_argument, NULL, 'P'},
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{"unlock", no_argument, NULL, 'u'},
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{"version", no_argument, NULL, 'v'},
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{"maxage", required_argument, NULL, 'x'},
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{"length", required_argument, NULL, 'L'},
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{"status", no_argument, NULL, 'S'},
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{NULL, 0, NULL, 0}
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};
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static char opts[] = "cCd:eEhi:ln:pPuvx:L:S";
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int
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eprint (int with_name, const char *fmt, ...)
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{
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va_list ap;
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if (with_name)
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fprintf(stderr, "%s: ", prog_name);
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va_start (ap, fmt);
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vfprintf (stderr, fmt, ap);
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va_end (ap);
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fprintf(stderr, "\n");
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return 1;
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}
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int
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EvalRet (int ret, const char *user)
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{
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switch (ret)
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{
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case NERR_Success:
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return 0;
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case ERROR_ACCESS_DENIED:
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if (! user)
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eprint (0, "You may not change password expiry information.");
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else
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eprint (0, "You may not change the password for %s.", user);
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break;
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eprint (0, "Bad password: Invalid.");
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break;
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case NERR_PasswordTooShort:
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eprint (0, "Bad password: Too short.");
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break;
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case NERR_UserNotFound:
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eprint (1, "unknown user %s", user);
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break;
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case ERROR_INVALID_PASSWORD:
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case NERR_BadPassword:
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eprint (0, "Incorrect password for %s.", user);
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eprint (0, "The password for %s is unchanged.", user);
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break;
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default:
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eprint (1, "unrecoverable error %d", ret);
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break;
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}
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return 1;
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}
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PUSER_INFO_3
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GetPW (char *user, int print_win_name, LPCWSTR server)
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{
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char usr_buf[UNLEN + 1];
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WCHAR name[2 * (UNLEN + 1)];
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DWORD ret;
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PUSER_INFO_3 ui;
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struct passwd *pw;
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char *domain = (char *) alloca (INTERNET_MAX_HOST_NAME_LENGTH + 1);
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/* Try getting a Win32 username in case the user edited /etc/passwd */
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if ((pw = getpwnam (user)))
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{
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cygwin_internal (CW_EXTRACT_DOMAIN_AND_USER, pw, domain, usr_buf);
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if (strcasecmp (pw->pw_name, usr_buf))
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{
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/* Hack to avoid problem with LookupAccountSid after impersonation */
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if (strcasecmp (usr_buf, "SYSTEM"))
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{
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user = usr_buf;
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if (print_win_name)
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printf ("Windows username : %s\n", user);
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}
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}
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}
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MultiByteToWideChar (CP_ACP, 0, user, -1, name, 2 * (UNLEN + 1));
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ret = NetUserGetInfo (server, name, 3, (void *) &ui);
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return EvalRet (ret, user) ? NULL : ui;
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}
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int
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ChangePW (const char *user, const char *oldpwd, const char *pwd, int justcheck,
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LPCWSTR server)
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{
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WCHAR name[2 * (UNLEN + 1)], oldpass[512], pass[512];
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DWORD ret;
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MultiByteToWideChar (CP_ACP, 0, user, -1, name, 2 * (UNLEN + 1));
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MultiByteToWideChar (CP_ACP, 0, pwd, -1, pass, 512);
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if (! oldpwd)
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{
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USER_INFO_1003 ui;
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ui.usri1003_password = pass;
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ret = NetUserSetInfo (server, name, 1003, (LPBYTE) &ui, NULL);
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}
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else
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{
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MultiByteToWideChar (CP_ACP, 0, oldpwd, -1, oldpass, 512);
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ret = NetUserChangePassword (server, name, oldpass, pass);
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}
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if (justcheck && ret != ERROR_INVALID_PASSWORD)
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return 0;
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if (! EvalRet (ret, user) && ! justcheck)
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{
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eprint (0, "Password changed.");
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}
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return ret;
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}
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void
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PrintPW (PUSER_INFO_3 ui, LPCWSTR server)
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{
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time_t t = time (NULL) - ui->usri3_password_age;
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int ret;
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PUSER_MODALS_INFO_0 mi;
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printf ("Account disabled : %s",
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(ui->usri3_flags & UF_ACCOUNTDISABLE) ? "yes\n" : "no\n");
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printf ("Password not required : %s",
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(ui->usri3_flags & UF_PASSWD_NOTREQD) ? "yes\n" : "no\n");
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printf ("User can't change password : %s",
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(ui->usri3_flags & UF_PASSWD_CANT_CHANGE) ? "yes\n" : "no\n");
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printf ("Password never expires : %s",
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(ui->usri3_flags & UF_DONT_EXPIRE_PASSWD) ? "yes\n" : "no\n");
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printf ("Password expired : %s",
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(ui->usri3_password_expired) ? "yes\n" : "no\n");
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printf ("Latest password change : %s", ctime(&t));
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ret = NetUserModalsGet (server, 0, (void *) &mi);
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if (! ret)
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{
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if (mi->usrmod0_max_passwd_age == TIMEQ_FOREVER)
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mi->usrmod0_max_passwd_age = 0;
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if (mi->usrmod0_min_passwd_age == TIMEQ_FOREVER)
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mi->usrmod0_min_passwd_age = 0;
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if (mi->usrmod0_force_logoff == TIMEQ_FOREVER)
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mi->usrmod0_force_logoff = 0;
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if (ui->usri3_priv == USER_PRIV_ADMIN)
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mi->usrmod0_min_passwd_len = 0;
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printf ("\nSystem password settings:\n");
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printf ("Max. password age %ld days\n",
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mi->usrmod0_max_passwd_age / ONE_DAY);
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printf ("Min. password age %ld days\n",
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mi->usrmod0_min_passwd_age / ONE_DAY);
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printf ("Force logout after %ld days\n",
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mi->usrmod0_force_logoff / ONE_DAY);
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printf ("Min. password length: %ld\n",
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mi->usrmod0_min_passwd_len);
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}
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}
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int
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SetModals (int xarg, int narg, int iarg, int Larg, LPCWSTR server)
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{
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int ret;
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PUSER_MODALS_INFO_0 mi;
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ret = NetUserModalsGet (server, 0, (void *) &mi);
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if (! ret)
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{
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if (xarg == 0)
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mi->usrmod0_max_passwd_age = TIMEQ_FOREVER;
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else if (xarg > 0)
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mi->usrmod0_max_passwd_age = xarg * ONE_DAY;
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if (narg == 0)
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{
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mi->usrmod0_min_passwd_age = TIMEQ_FOREVER;
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mi->usrmod0_password_hist_len = 0;
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}
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else if (narg > 0)
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mi->usrmod0_min_passwd_age = narg * ONE_DAY;
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if (iarg == 0)
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mi->usrmod0_force_logoff = TIMEQ_FOREVER;
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else if (iarg > 0)
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mi->usrmod0_force_logoff = iarg * ONE_DAY;
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if (Larg >= 0)
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mi->usrmod0_min_passwd_len = Larg;
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ret = NetUserModalsSet (server, 0, (LPBYTE) mi, NULL);
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NetApiBufferFree (mi);
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}
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return EvalRet (ret, NULL);
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}
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static void usage (FILE * stream, int status) __attribute__ ((noreturn));
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static void
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usage (FILE * stream, int status)
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{
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fprintf (stream, ""
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"Usage: %s [OPTION] [USER]\n"
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"Change USER's password or password attributes.\n"
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"\n"
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"User operations:\n"
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" -l, --lock lock USER's account.\n"
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" -u, --unlock unlock USER's account.\n"
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" -c, --cannot-change USER can't change password.\n"
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" -C, --can-change USER can change password.\n"
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" -e, --never-expires USER's password never expires.\n"
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" -E, --expires USER's password expires according to system's\n"
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" password aging rule.\n"
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" -p, --pwd-not-required no password required for USER.\n"
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" -P, --pwd-required password is required for USER.\n"
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"\n"
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"System operations:\n"
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" -i, --inactive NUM set NUM of days before inactive accounts are disabled\n"
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" (inactive accounts are those with expired passwords).\n"
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" -n, --minage DAYS set system minimum password age to DAYS days.\n"
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" -x, --maxage DAYS set system maximum password age to DAYS days.\n"
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" -L, --length LEN set system minimum password length to LEN.\n"
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"\n"
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"Other options:\n"
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" -d, --logonserver SERVER connect to SERVER (e.g. domain controller).\n"
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" default server is the content of $LOGONSERVER.\n"
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" -S, --status display password status for USER (locked, expired,\n"
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" etc.) plus global system password settings.\n"
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" -h, --help output usage information and exit.\n"
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" -v, --version output version information and exit.\n"
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"\n"
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"If no option is given, change USER's password. If no user name is given,\n"
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"operate on current user. System operations must not be mixed with user\n"
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"operations. Don't specify a USER when triggering a system operation. \n"
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"\n"
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"Report bugs to <cygwin@cygwin.com>\n", prog_name);
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exit (status);
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}
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static void
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print_version ()
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{
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const char *v = strchr (version, ':');
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int len;
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if (!v)
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{
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v = "?";
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len = 1;
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}
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else
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{
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v += 2;
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len = strchr (v, ' ') - v;
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}
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printf ("\
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%s (cygwin) %.*s\n\
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Password Utility\n\
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Copyright 1999, 2000, 2001, 2002, 2003 Red Hat, Inc.\n\
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Compiled on %s\n\
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", prog_name, len, v, __DATE__);
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}
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int
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main (int argc, char **argv)
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{
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char *c;
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char user[64], oldpwd[64], newpwd[64];
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int ret = 0;
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int cnt = 0;
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int opt, len;
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int Larg = -1;
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int xarg = -1;
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int narg = -1;
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int iarg = -1;
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int lopt = 0;
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int uopt = 0;
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int copt = 0;
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int Copt = 0;
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int eopt = 0;
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int Eopt = 0;
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int popt = 0;
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int Popt = 0;
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int Sopt = 0;
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PUSER_INFO_3 ui, li;
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LPWSTR server = NULL;
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prog_name = strrchr (argv[0], '/');
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if (prog_name == NULL)
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prog_name = strrchr (argv[0], '\\');
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if (prog_name == NULL)
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prog_name = argv[0];
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else
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prog_name++;
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c = strrchr (prog_name, '.');
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if (c)
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*c = '\0';
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while ((opt = getopt_long (argc, argv, opts, longopts, NULL)) != EOF)
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switch (opt)
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{
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case 'h':
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usage (stdout, 0);
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break;
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case 'i':
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if (lopt || uopt || copt || Copt || eopt || Eopt || popt || Popt || Sopt)
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usage (stderr, 1);
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if ((iarg = atoi (optarg)) < 0 || iarg > 999)
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return eprint (1, "Force logout time must be between 0 and 999.");
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break;
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case 'l':
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if (xarg >= 0 || narg >= 0 || iarg >= 0 || Larg >= 0 || uopt || Sopt)
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usage (stderr, 1);
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lopt = 1;
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break;
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case 'n':
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if (lopt || uopt || copt || Copt || eopt || Eopt || popt || Popt || Sopt)
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usage (stderr, 1);
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if ((narg = atoi (optarg)) < 0 || narg > 999)
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return eprint (1, "Minimum password age must be between 0 and 999.");
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if (xarg >= 0 && narg > xarg)
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return eprint (1, "Minimum password age must be less than "
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"maximum password age.");
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break;
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case 'u':
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if (xarg >= 0 || narg >= 0 || iarg >= 0 || Larg >= 0 || lopt || Sopt)
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usage (stderr, 1);
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uopt = 1;
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break;
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case 'c':
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if (xarg >= 0 || narg >= 0 || iarg >= 0 || Larg >= 0 || Sopt)
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usage (stderr, 1);
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copt = 1;
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break;
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case 'C':
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if (xarg >= 0 || narg >= 0 || iarg >= 0 || Larg >= 0 || Sopt)
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usage (stderr, 1);
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Copt = 1;
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break;
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case 'd':
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{
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char *tmpbuf = alloca (strlen (optarg) + 3);
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tmpbuf[0] = '\0';
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if (*optarg != '\\')
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strcpy (tmpbuf, "\\\\");
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strcat (tmpbuf, optarg);
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server = alloca ((strlen (tmpbuf) + 1) * sizeof (WCHAR));
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if (MultiByteToWideChar (CP_ACP, 0, tmpbuf, -1, server,
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strlen (tmpbuf) + 1) <= 0)
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server = NULL;
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}
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break;
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case 'e':
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if (xarg >= 0 || narg >= 0 || iarg >= 0 || Larg >= 0 || Sopt)
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usage (stderr, 1);
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eopt = 1;
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break;
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case 'E':
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if (xarg >= 0 || narg >= 0 || iarg >= 0 || Larg >= 0 || Sopt)
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usage (stderr, 1);
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Eopt = 1;
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break;
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case 'p':
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if (xarg >= 0 || narg >= 0 || iarg >= 0 || Larg >= 0 || Sopt)
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usage (stderr, 1);
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popt = 1;
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break;
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case 'P':
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if (xarg >= 0 || narg >= 0 || iarg >= 0 || Larg >= 0 || Sopt)
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usage (stderr, 1);
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Popt = 1;
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break;
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case 'v':
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print_version ();
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exit (0);
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break;
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case 'x':
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if (lopt || uopt || copt || Copt || eopt || Eopt || popt || Popt || Sopt)
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usage (stderr, 1);
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if ((xarg = atoi (optarg)) < 0 || xarg > 999)
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return eprint (1, "Maximum password age must be between 0 and 999.");
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if (narg >= 0 && xarg < narg)
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return eprint (1, "Maximum password age must be greater than "
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"minimum password age.");
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break;
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case 'L':
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if (lopt || uopt || copt || Copt || eopt || Eopt || popt || Popt || Sopt)
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usage (stderr, 1);
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if ((Larg = atoi (optarg)) < 0 || Larg > LM20_PWLEN)
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return eprint (1, "Minimum password length must be between "
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"0 and %d.", LM20_PWLEN);
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break;
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case 'S':
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if (xarg >= 0 || narg >= 0 || iarg >= 0 || Larg >= 0 || lopt || uopt
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|| copt || Copt || eopt || Eopt || popt || Popt)
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usage (stderr, 1);
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Sopt = 1;
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break;
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default:
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usage (stderr, 1);
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}
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if (!server)
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{
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len = GetEnvironmentVariableW (L"LOGONSERVER", NULL, 0);
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if (len > 0)
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{
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server = alloca (len * sizeof (WCHAR));
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if (GetEnvironmentVariableW (L"LOGONSERVER", server, len) <= 0)
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server = NULL;
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}
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}
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if (Larg >= 0 || xarg >= 0 || narg >= 0 || iarg >= 0)
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{
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if (optind < argc)
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usage (stderr, 1);
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return SetModals (xarg, narg, iarg, Larg, server);
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}
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strcpy (user, optind >= argc ? getlogin () : argv[optind]);
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li = GetPW (getlogin (), 0, server);
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if (! li)
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return 1;
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ui = GetPW (user, 1, server);
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if (! ui)
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return 1;
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if (lopt || uopt || copt || Copt || eopt || Eopt || popt || Popt || Sopt)
|
|
{
|
|
USER_INFO_1008 uif;
|
|
|
|
if (li->usri3_priv != USER_PRIV_ADMIN)
|
|
return eprint (0, "You have no maintenance privileges.");
|
|
uif.usri1008_flags = ui->usri3_flags;
|
|
if (lopt)
|
|
{
|
|
if (ui->usri3_priv == USER_PRIV_ADMIN)
|
|
return eprint (0, "Locking an admin account is disallowed.");
|
|
uif.usri1008_flags |= UF_ACCOUNTDISABLE;
|
|
}
|
|
if (uopt)
|
|
uif.usri1008_flags &= ~UF_ACCOUNTDISABLE;
|
|
if (copt)
|
|
uif.usri1008_flags |= UF_PASSWD_CANT_CHANGE;
|
|
if (Copt)
|
|
uif.usri1008_flags &= ~UF_PASSWD_CANT_CHANGE;
|
|
if (eopt)
|
|
uif.usri1008_flags |= UF_DONT_EXPIRE_PASSWD;
|
|
if (Eopt)
|
|
uif.usri1008_flags &= ~UF_DONT_EXPIRE_PASSWD;
|
|
if (popt)
|
|
uif.usri1008_flags |= UF_PASSWD_NOTREQD;
|
|
if (Popt)
|
|
uif.usri1008_flags &= ~UF_PASSWD_NOTREQD;
|
|
|
|
if (lopt || uopt || copt || Copt || eopt || Eopt || popt || Popt)
|
|
{
|
|
ret = NetUserSetInfo (server, ui->usri3_name, 1008, (LPBYTE) &uif,
|
|
NULL);
|
|
return EvalRet (ret, NULL);
|
|
}
|
|
// Sopt
|
|
PrintPW (ui, server);
|
|
return 0;
|
|
}
|
|
|
|
if (li->usri3_priv != USER_PRIV_ADMIN && strcmp (getlogin (), user))
|
|
return eprint (0, "You may not change the password for %s.", user);
|
|
|
|
eprint (0, "Enter the new password (minimum of 5, maximum of 8 characters).");
|
|
eprint (0, "Please use a combination of upper and lower case letters and numbers.");
|
|
|
|
oldpwd[0] = '\0';
|
|
if (li->usri3_priv != USER_PRIV_ADMIN)
|
|
{
|
|
strcpy (oldpwd, getpass ("Old password: "));
|
|
if (ChangePW (user, oldpwd, oldpwd, 1, server))
|
|
return 1;
|
|
}
|
|
|
|
do
|
|
{
|
|
strcpy (newpwd, getpass ("New password: "));
|
|
if (strcmp (newpwd, getpass ("Re-enter new password: ")))
|
|
eprint (0, "Password is not identical.");
|
|
else if (! ChangePW (user, *oldpwd ? oldpwd : NULL, newpwd, 0, server))
|
|
ret = 1;
|
|
if (! ret && cnt < 2)
|
|
eprint (0, "Try again.");
|
|
}
|
|
while (! ret && ++cnt < 3);
|
|
return ! ret;
|
|
}
|