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
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2026 Red Hat, Inc.
*/
/**
* SECTION:nmt-wifi-qr-dialog
* @short_description: A dialog that shares a Wi-Fi connection as a QR code
*
* Shows the "WIFI:" provisioning URI of a saved Wi-Fi connection as a
* scannable QR code, along with the SSID and password. If the password is a
* passphrase that cannot be read, it shows a warning instead of a QR code.
*/
#include "libnm-client-aux-extern/nm-default-client.h"
#include "nmt-wifi-qr-dialog.h"
#include "libnm-glib-aux/nm-secret-utils.h"
#include "libnmc-base/nm-client-utils.h"
#include "nmt-utils.h"
static NMConnection *
clone_with_secrets(NMConnection *connection)
{
NMConnection *clone = nm_simple_connection_new_clone(connection);
gs_unref_variant GVariant *secrets = NULL;
if (!NM_IS_REMOTE_CONNECTION(connection))
return clone;
secrets = nmt_sync_get_secrets(NM_REMOTE_CONNECTION(connection),
NM_SETTING_WIRELESS_SECURITY_SETTING_NAME,
NULL);
if (secrets)
nm_connection_update_secrets(clone,
NM_SETTING_WIRELESS_SECURITY_SETTING_NAME,
secrets,
NULL);
return clone;
}
static gboolean
qr_fits_screen(const char *qr)
{
gs_strfreev char **lines = NULL;
int screen_w;
int screen_h;
int qr_rows;
int qr_cols;
newtGetScreenSize(&screen_w, &screen_h);
lines = g_strsplit(qr, "\n", -1);
qr_rows = g_strv_length(lines);
qr_cols = lines[0] ? (int) g_utf8_strlen(lines[0], -1) : 0;
/* Reserve room for the form border, title, the SSID/password labels and
* the button row. */
return qr_cols + 4 <= screen_w && qr_rows + 8 <= screen_h;
}
/**
* nmt_wifi_qr_dialog_run:
* @connection: a Wi-Fi #NMConnection
*
* Fetches @connection's secrets and shows a modal dialog with a QR code that
* encodes its Wi-Fi credentials, or a warning if the password cannot be read.
* Returns when the user closes the dialog.
*/
void
nmt_wifi_qr_dialog_run(NMConnection *connection)
{
gs_unref_object NMConnection *clone = NULL;
gs_unref_object NmtNewtForm *form = NULL;
NMSettingWireless *s_wireless;
NMSettingWirelessSecurity *s_wsec;
NmtNewtGrid *grid;
NmtNewtWidget *widget;
NmtNewtButtonBox *bbox;
GBytes *ssid_bytes;
gs_free char *ssid = NULL;
nm_auto_free_secret char *uri = NULL;
nm_auto_free_secret char *qr = NULL;
const char *key_mgmt = NULL;
const char *psk = NULL;
gboolean no_password;
int row = 0;
g_return_if_fail(NM_IS_CONNECTION(connection));
if (!nm_connection_get_setting_wireless(connection))
return;
clone = clone_with_secrets(connection);
s_wireless = nm_connection_get_setting_wireless(clone);
ssid_bytes = nm_setting_wireless_get_ssid(s_wireless);
if (ssid_bytes)
ssid =
nm_utils_ssid_to_utf8(g_bytes_get_data(ssid_bytes, NULL), g_bytes_get_size(ssid_bytes));
s_wsec = nm_connection_get_setting_wireless_security(clone);
if (s_wsec) {
key_mgmt = nm_setting_wireless_security_get_key_mgmt(s_wsec);
psk = nm_setting_wireless_security_get_psk(s_wsec);
}
/* A QR code for a secured network without its password connects to nothing,
* so don't render one; show a warning instead. */
no_password = nmc_wifi_key_mgmt_uses_psk(key_mgmt) && (!psk || !psk[0]);
if (!no_password) {
uri = nmc_wifi_qr_uri_new(ssid, key_mgmt, psk, nm_setting_wireless_get_hidden(s_wireless));
qr = nmc_wifi_qr_render_string(uri);
}
form = nmt_newt_form_new(_("Share Wi-Fi"));
widget = nmt_newt_grid_new();
nmt_newt_form_set_content(form, widget);
grid = NMT_NEWT_GRID(widget);
if (no_password) {
widget = nmt_newt_textbox_new(0, 50);
nmt_newt_textbox_set_text(
NMT_NEWT_TEXTBOX(widget),
_("Warning: cannot read the Wi-Fi password due to insufficient privileges."));
} else if (qr && qr_fits_screen(qr)) {
widget = nmt_newt_textbox_new(NMT_NEWT_TEXTBOX_SET_BACKGROUND, 0);
nmt_newt_textbox_set_text(NMT_NEWT_TEXTBOX(widget), qr);
} else {
widget = nmt_newt_textbox_new(0, 50);
nmt_newt_textbox_set_text(NMT_NEWT_TEXTBOX(widget),
qr ? _("The terminal is too small to display the QR code.")
: _("The Wi-Fi credentials could not be encoded."));
}
nmt_newt_grid_add(grid, widget, 0, row++);
nmt_newt_widget_set_padding(widget, 0, 0, 0, 1);
if (ssid) {
gs_free char *label = g_strdup_printf("%s: %s", _("SSID"), ssid);
widget = nmt_newt_label_new(label);
nmt_newt_grid_add(grid, widget, 0, row++);
}
if (psk) {
nm_auto_free_secret char *label = g_strdup_printf("%s: %s", _("Password"), psk);
widget = nmt_newt_label_new(label);
nmt_newt_grid_add(grid, widget, 0, row++);
}
widget = nmt_newt_button_box_new(NMT_NEWT_BUTTON_BOX_HORIZONTAL);
nmt_newt_grid_add(grid, widget, 0, row++);
nmt_newt_widget_set_padding(widget, 0, 1, 0, 0);
bbox = NMT_NEWT_BUTTON_BOX(widget);
widget = nmt_newt_button_box_add_end(bbox, _("Close"));
nmt_newt_widget_set_exit_on_activate(widget, TRUE);
nmt_newt_form_run_sync(form);
}
|
