DMenu MenuNIS = {

    DMENU_NORMAL_TYPE | DMENU_SELECTION_RETURNS,

    "Network Information System Configuration.",

    " ",

    NULL,

    NULL,

    { { "X Exit", "Exit this menu (returning to previous)",

	NULL, dmenuExit },

      { "1 enable", "Enable NIS client services.",

	dmenuVarCheck, dmenuSetVariable, NULL, "nis_client_enable=YES" },

      { "2 disable", "Disable NIS client services.",

	dmenuVarCheck, dmenuSetVariable, NULL, "nis_client_enable=NO" },

      { "3 setdomainname",  "Set NIS domainname.",

	dmenuVarCheck, dmenuISetVariable, NULL, "nisdomainname" },

      { "4 addusers", "Add all NIS users.",

	dmenuVarCheck, NISAddUsers, NULL, "nis_client_enable" },

      { "5 adduser", "Add a NIS user.",

	NULL, userAddUser, NULL, (int *)TRUE },

      { NULL } },

};

extern DMenu            MenuNIS;                /* Network Information Service menu */

extern int      NISAddUsers(dialogMenuItem *self);

extern void     NISAddUser(WINDOW *ds_win);

extern int      NISverifyUserSettings(WINDOW *ds_win);

#include <pwd.h>

/* The NIS user configuration menu. */

static Layout NISuserLayout[] = {

#define LAYOUT_UNAME		0

    { 3, 6, UT_NAMESIZE, UT_NAMESIZE + 1,

      "Login ID:", "The login name of the new user (appended with a '+')",

      uname, STRINGOBJ, NULL },

#define LAYOUT_UID		1

    { 3, 23, 8, UID_FIELD_LEN - 1,

      "UID:", "The numerical ID for this user (leave blank to use server's setting)",

      uid, STRINGOBJ, NULL },

#define LAYOUT_UGROUP		2

    { 3, 33, 8, UGROUP_FIELD_LEN - 1,

      "Group:", "The login group name for this user (leave blank to use server's setting)",

      ugroup, STRINGOBJ, NULL },

#define LAYOUT_GECOS		4

    { 8, 6, 33, GECOS_FIELD_LEN - 1,

      "Full name:", "The user's full name (comment)",

      gecos, STRINGOBJ, NULL },

#define LAYOUT_UMEMB		5

    { 8, 43, 15, UMEMB_FIELD_LEN - 1,

      "Member groups:", "The groups this user belongs to (i.e. gets access rights for)",

      umemb, STRINGOBJ, NULL },

#define LAYOUT_HOMEDIR		6

    { 13, 6, 20, HOMEDIR_FIELD_LEN - 1,

      "Home directory:", "The user's home directory (leave blank to use server's setting)",

      homedir, STRINGOBJ, NULL },

#define LAYOUT_SHELL		7

    { 13, 29, 29, SHELL_FIELD_LEN - 1,

      "Login shell:", "The user's login shell (leave blank to use server's setting)",

      shell, STRINGOBJ, NULL },

#define LAYOUT_U_OKBUTTON	8

    { 18, 15, 0, 0,

      "OK", "Select this if you are happy with these settings",

	&okbutton, BUTTONOBJ, NULL },

#define LAYOUT_U_CANCELBUTTON	9

    { 18, 35, 0, 0,

      "CANCEL", "Select this if you wish to cancel this screen",

      &cancelbutton, BUTTONOBJ, NULL },

    { NULL },

};

    Layout              *layout;

    isNIS=(int)self->data;

    layout = isNIS ? NISuserLayout : userLayout;

/*

 * The above code uses 'pw', which complains about the special characters [+@]

 * that appear in NIS names.  Hence special NIS functions are created to write

 * directly to master.passwd instead. 

 */

static int

NISUserExist(char *login,FILE *passwdfp)

{

    char pwline[256];

    rewind(passwdfp);

    while (fgets(&pwline[0],256,passwdfp) != NULL) {

      if (!strncmp(login,pwline,strlen(login))) {

	/* An entry already exists for this user */

	return 1;

      }

    }

    return 0;

}

int

NISAddUsers(dialogMenuItem *self)

{

    FILE *fptr;

    long fpos;

    WINDOW *w = savescr();

    dialog_clear_norefresh();

    /* Check to see if global NIS entry already exists */    

    fptr = fopen(_PATH_MASTERPASSWD,"a+");

    if (! fptr) {

	msgConfirm("Could not open master password file.");

	return DITEM_FAILURE;

    }

    fpos=ftell(fptr);

    /* If there are no global NIS entries, add one. */

    if (!NISUserExist("+",fptr)) {

      msgConfirm("This option will import the entire NIS passwd map.  All users with NIS\n"

	       "accounts on your network will be able to logon to your system.  If this\n"

	       "is not desireable you should import individual NIS accounts instead.\n");

      fseek(fptr,fpos,SEEK_SET);

      fprintf(fptr,"+:::::::::\n");

      fclose(fptr);

      msgNotify("Remaking password file: %s", _PATH_MASTERPASSWD);

      vsystem("pwd_mkdb -p %s", _PATH_MASTERPASSWD);

      msgNotify("Password file rebuilt.");

    } else {

      msgConfirm("There is already a global NIS entry.  Password file untouched.");

      fclose(fptr);

    }

    restorescr(w);

    return DITEM_SUCCESS | DITEM_RESTORE;

}

void

NISAddUser(WINDOW *ds_win)

{

    FILE *fptr;

    long fpos;

    WINDOW *w = savescr();

    dialog_clear_norefresh();

    /* Check to see if global NIS entry already exists */    

    fptr = fopen(_PATH_MASTERPASSWD,"a+");

    if (! fptr) {

	msgConfirm("Could not open master password file.");

	return;

    }

    fpos=ftell(fptr);

    /* If there are no global NIS entries, add one. */

    if (!NISUserExist(uname,fptr)) {

      fseek(fptr,fpos,SEEK_SET);

      fprintf(fptr,"%s:%s:%s:%s::0:0:%s:%s:%s\n",uname,passwd,uid,ugroup,gecos,homedir,shell);

      fclose(fptr);

      msgNotify("Remaking password file: %s", _PATH_MASTERPASSWD);

      vsystem("pwd_mkdb -p %s", _PATH_MASTERPASSWD);

      msgConfirm("User successfully added!");

    } else {

      msgConfirm("User %s already exists!",uname);

      fclose(fptr);

    }

    restorescr(w);

}

int

NISverifyUserSettings(WINDOW *ds_win)

{

    char *cp;

    WINDOW *save;

    int rv;

    if (strlen(uname) == 0) {

	feepout("The user name field must not be empty!");

	return 0;

    }

    if ((uname[0] != '+') && (uname[0] != '-')) {

      feepout("Valid NIS user names must start with a '+' or '-'!");

      return 0;

    }

    if (strlen(shell) > 0) {

	while((cp = getusershell()) != NULL)

	    if (strcmp(cp, shell) == 0)

		break;

	endusershell();

	if (cp == NULL) {

	    save = savescr();

	    rv = msgYesNo("Warning:\n\n"

			  "The requested shell \"%s\" is not\n"

			  "a valid user shell.\n\n"

			  "Use it anyway?\n", shell);

	    restorescr(save);

	    wrefresh(ds_win);

	    if (rv != DITEM_SUCCESS)

		return 0;

	}

    }

    if (strlen(umemb) > 0) {

	if (strpbrk(umemb, " \t") != NULL) {

	    feepout("The member groups list must not contain any whitespace;\n"

		    "use commas to separate the names.");

	    return 0;

	}

    }

    return 1;

}