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
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
/* Krb5 Auth Applet -- Acquire and release kerberos tickets
*
* (C) 2010 Guido Guenther <agx@sigxcpu.org>
*
* 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.
*
* 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.
*
*/
/* Create an entry buffer that uses the secmem routines for password storage */
#include "config.h"
#include <gtk/gtk.h>
#include <string.h>
#include "ka-entry-buffer.h"
#include "memory.h"
struct _KaEntryBuffer {
GtkEntryBuffer parent;
KaEntryBufferPrivate *priv;
};
struct _KaEntryBufferClass {
GtkEntryBufferClass parent_class;
};
G_DEFINE_TYPE (KaEntryBuffer, ka_entry_buffer, GTK_TYPE_ENTRY_BUFFER)
struct _KaEntryBufferPrivate {
gchar *password;
gsize password_size;
gsize password_bytes;
guint password_chars;
};
static const gchar *
ka_entry_buffer_pw_get_text (GtkEntryBuffer *buffer,
gsize * n_bytes)
{
KaEntryBuffer *self = KA_ENTRY_BUFFER(buffer);
if (n_bytes)
*n_bytes = self->priv->password_bytes;
if (!self->priv->password)
return "";
return self->priv->password;
}
static guint
ka_entry_buffer_pw_get_length (GtkEntryBuffer *buffer)
{
KaEntryBuffer *self = KA_ENTRY_BUFFER(buffer);
return self->priv->password_chars;
}
static guint
ka_entry_buffer_pw_insert_text (GtkEntryBuffer *buffer,
guint position,
const gchar *chars,
guint n_chars)
{
KaEntryBuffer *self = KA_ENTRY_BUFFER(buffer);
KaEntryBufferPrivate *pv = self->priv;
gsize prev_size;
gsize n_bytes;
gsize at;
n_bytes = g_utf8_offset_to_pointer (chars, n_chars) - chars;
/* Need more memory */
if (n_bytes + pv->password_bytes + 1 > pv->password_size) {
gchar *et_new;
prev_size = pv->password_size;
/* Calculate our new buffer size */
while (n_bytes + pv->password_bytes + 1 > pv->password_size) {
if (pv->password_size == 0)
pv->password_size = PW_MIN_SIZE;
else {
if (2 * pv->password_size < GTK_ENTRY_BUFFER_MAX_SIZE)
pv->password_size *= 2;
else {
pv->password_size = GTK_ENTRY_BUFFER_MAX_SIZE;
if (n_bytes >
pv->password_size - pv->password_bytes - 1) {
n_bytes =
pv->password_size - pv->password_bytes - 1;
n_bytes =
g_utf8_find_prev_char (chars,
chars + n_bytes + 1) -
chars;
n_chars = g_utf8_strlen (chars, n_bytes);
}
break;
}
}
}
et_new = secmem_malloc (pv->password_size);
memcpy (et_new, pv->password,
MIN (prev_size, pv->password_size));
secmem_free (pv->password);
pv->password = et_new;
}
/* Actual text insertion */
at = g_utf8_offset_to_pointer (pv->password,
position) - pv->password;
g_memmove (pv->password + at + n_bytes, pv->password + at,
pv->password_bytes - at);
memcpy (pv->password + at, chars, n_bytes);
/* Book keeping */
pv->password_bytes += n_bytes;
pv->password_chars += n_chars;
pv->password[pv->password_bytes] = '\0';
gtk_entry_buffer_emit_inserted_text (GTK_ENTRY_BUFFER(self), position, chars, n_chars);
return n_chars;
}
static guint
ka_entry_buffer_pw_delete_text (GtkEntryBuffer *buffer,
guint position, guint n_chars)
{
KaEntryBuffer *self = KA_ENTRY_BUFFER(buffer);
KaEntryBufferPrivate *pv = self->priv;
gsize start, end;
if (position > pv->password_chars)
position = pv->password_chars;
if (position + n_chars > pv->password_chars)
n_chars = pv->password_chars - position;
if (n_chars > 0) {
start =
g_utf8_offset_to_pointer (pv->password,
position) - pv->password;
end =
g_utf8_offset_to_pointer (pv->password,
position + n_chars) - pv->password;
g_memmove (pv->password + start, pv->password + end,
pv->password_bytes + 1 - end);
pv->password_chars -= n_chars;
pv->password_bytes -= (end - start);
gtk_entry_buffer_emit_deleted_text (GTK_ENTRY_BUFFER(self), position, n_chars);
}
return n_chars;
}
static void
ka_entry_buffer_dispose (GObject *object)
{
G_OBJECT_CLASS (ka_entry_buffer_parent_class)->dispose (object);
}
static void
ka_entry_buffer_finalize (GObject *object)
{
KaEntryBuffer *self = KA_ENTRY_BUFFER(object);
if (self->priv->password) {
secmem_free (self->priv->password);
self->priv->password_size = 0;
self->priv->password_bytes = 0;
self->priv->password_chars = 0;
}
G_OBJECT_CLASS (ka_entry_buffer_parent_class)->finalize (object);
}
static void
ka_entry_buffer_class_init (KaEntryBufferClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkEntryBufferClass *eb_class = GTK_ENTRY_BUFFER_CLASS (klass);
g_type_class_add_private (klass, sizeof (KaEntryBufferPrivate));
eb_class->get_text = ka_entry_buffer_pw_get_text;
eb_class->get_length = ka_entry_buffer_pw_get_length;
eb_class->insert_text = ka_entry_buffer_pw_insert_text;
eb_class->delete_text = ka_entry_buffer_pw_delete_text;
object_class->dispose = ka_entry_buffer_dispose;
object_class->finalize = ka_entry_buffer_finalize;
}
static void
ka_entry_buffer_init (KaEntryBuffer *self)
{
self->priv = G_TYPE_INSTANCE_GET_PRIVATE(self,
KA_TYPE_ENTRY_BUFFER,
KaEntryBufferPrivate);
self->priv->password = NULL;
self->priv->password_size = 0;
self->priv->password_bytes = 0;
self->priv->password_chars = 0;
}
KaEntryBuffer *
ka_entry_buffer_new (void)
{
return g_object_new (KA_TYPE_ENTRY_BUFFER, NULL);
}
/*
* vim:ts:sts=4:sw=4:et:
*/
|
