aboutsummaryrefslogtreecommitdiff
path: root/passwd.c
blob: 5e3c1d2a61474c0709b7d9fee3026f3bfcac293d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
/* --------------------------------------------------------------------------*/
/*                                                                           */
/* 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 2            */
/* 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 */