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/* --------------------------------------------------------------------------*/
/* */
/* converts a UID number to a user name symbol */
/* Written by Hans-Christoph Steiner <hans@at.or.at> */
/* */
/* Copyright (c) 2006 Hans-Christoph Steiner */
/* */
/* This program is free software; you can redistribute it and/or */
/* modify it under the terms of the GNU General Public License */
/* as published by the Free Software Foundation; either version 3 */
/* of the License, or (at your option) any later version. */
/* */
/* See file LICENSE for further informations on licensing terms. */
/* */
/* This program is distributed in the hope that it will be useful, */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
/* GNU General Public License for more details. */
/* */
/* You should have received a copy of the GNU General Public License */
/* along with this program; if not, write to the Free Software Foundation, */
/* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* */
/* --------------------------------------------------------------------------*/
#ifndef _WIN32 // this doesn't work on Windows (yet?)
#include <m_pd.h>
#ifdef _WIN32
#define _WIN32_WINNT 0x0400
#include <windows.h>
#include <stdio.h>
#include <lm.h>
#else
#include <stdlib.h>
#include <pwd.h>
#endif
#include <string.h>
static char *version = "$Revision: 1.3 $";
t_int passwd_instance_count;
#define DEBUG(x)
//#define DEBUG(x) x
/*------------------------------------------------------------------------------
* CLASS DEF
*/
static t_class *passwd_class;
typedef struct _passwd {
t_object x_obj;
t_float x_uid;
t_outlet *x_data_outlet;
t_outlet *x_status_outlet;
} t_passwd;
/*------------------------------------------------------------------------------
* IMPLEMENTATION
*/
static void passwd_output(t_passwd *x)
{
DEBUG(post("passwd_output"););
struct passwd *passwd_pointer;
t_atom output_data[6];
#ifdef _WIN32
/* TODO: implement for Windows! */
#else
if( x->x_uid < 0 )
{
post("[passwd]: ignoring bad username or UID less than zero");
outlet_bang(x->x_status_outlet);
}
else
{
passwd_pointer = getpwuid((uid_t)x->x_uid);
if( passwd_pointer != NULL )
{
SETSYMBOL(output_data, gensym(passwd_pointer->pw_passwd));
SETFLOAT(output_data + 1, passwd_pointer->pw_uid);
SETFLOAT(output_data + 2, passwd_pointer->pw_gid);
SETSYMBOL(output_data + 3, gensym(passwd_pointer->pw_gecos));
SETSYMBOL(output_data + 4, gensym(passwd_pointer->pw_dir));
SETSYMBOL(output_data + 5, gensym(passwd_pointer->pw_shell));
outlet_anything(x->x_data_outlet, gensym(passwd_pointer->pw_name),
6, output_data);
}
else
{
outlet_bang(x->x_status_outlet);
}
}
#endif /* _WIN32 */
}
static t_float get_uid_from_arguments(int argc, t_atom *argv)
{
t_symbol *first_argument;
t_float uid = -1;
struct passwd *passwd_pointer;
if(argc == 0) return(0);
if(argc != 1)
post("[passwd]: too many arguments (%d), ignoring all but the first",
argc);
first_argument = atom_getsymbolarg(0,argc,argv);
if(first_argument == &s_)
{ // single float arg means UID #
uid = atom_getfloatarg(0,argc,argv);
if( uid < 0 )
{
error("[passwd]: UID less than zero not allowed (%d)", uid);
return(-1);
}
}
else
{ // single symbol arg means username
passwd_pointer = getpwnam(first_argument->s_name);
if( passwd_pointer != NULL )
return((t_float) passwd_pointer->pw_uid);
else
return(-1);
}
return(-1);
}
static void passwd_set(t_passwd *x, t_symbol *s, int argc, t_atom *argv)
{
/* get rid of the unused variable warning with the if() statement */
if( strcmp(s->s_name, "set") == 0 )
x->x_uid = get_uid_from_arguments(argc, argv);
}
static void passwd_float(t_passwd *x, t_float f)
{
x->x_uid = f;
passwd_output(x);
}
static void passwd_symbol(t_passwd *x, t_symbol *s)
{
t_atom argv[1];
SETSYMBOL(argv, s);
passwd_set(x, gensym("set"), 1, argv);
passwd_output(x);
}
static void *passwd_new(t_symbol *s, int argc, t_atom *argv)
{
DEBUG(post("passwd_new"););
t_passwd *x = (t_passwd *)pd_new(passwd_class);
if(!passwd_instance_count)
{
post("[passwd] %s",version);
post("\twritten by Hans-Christoph Steiner <hans@at.or.at>");
post("\tcompiled on "__DATE__" at "__TIME__ " ");
}
passwd_instance_count++;
floatinlet_new(&x->x_obj, &x->x_uid);
x->x_data_outlet = outlet_new(&x->x_obj, 0);
x->x_status_outlet = outlet_new(&x->x_obj, 0);
passwd_set(x, gensym("set"), argc, argv);
return (x);
}
void passwd_free(void)
{
#ifdef _WIN32
#else
endpwent();
#endif /* _WIN32 */
}
void passwd_setup(void)
{
DEBUG(post("passwd_setup"););
passwd_class = class_new(gensym("passwd"),
(t_newmethod)passwd_new,
0,
sizeof(t_passwd),
0,
A_GIMME,
0);
/* add inlet datatype methods */
class_addbang(passwd_class, (t_method) passwd_output);
class_addfloat(passwd_class, (t_method) passwd_float);
class_addsymbol(passwd_class, (t_method) passwd_symbol);
/* add inlet message methods */
class_addmethod(passwd_class,
(t_method) passwd_set,
gensym("set"),
A_GIMME,
0);
}
#endif /* NOT _WIN32 */
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