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nm-supplicant-config.c
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nm-supplicant-config.c
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2006 - 2012 Red Hat, Inc.
* Copyright (C) 2007 - 2008 Novell, Inc.
*/
#include "src/core/nm-default-daemon.h"
#include "nm-supplicant-config.h"
#include <stdlib.h>
#include "libnm-glib-aux/nm-str-buf.h"
#include "libnm-core-intern/nm-core-internal.h"
#include "nm-supplicant-settings-verify.h"
#include "nm-setting.h"
#include "libnm-core-aux-intern/nm-auth-subject.h"
#include "NetworkManagerUtils.h"
#include "nm-utils.h"
#include "nm-setting-ip4-config.h"
typedef struct {
char *value;
guint32 len;
NMSupplOptType type;
} ConfigOption;
/*****************************************************************************/
typedef struct {
GHashTable *config;
GHashTable *blobs;
NMSupplCapMask capabilities;
guint32 ap_scan;
bool fast_required : 1;
bool dispose_has_run : 1;
bool ap_isolation : 1;
} NMSupplicantConfigPrivate;
struct _NMSupplicantConfig {
GObject parent;
NMSupplicantConfigPrivate _priv;
};
struct _NMSupplicantConfigClass {
GObjectClass parent;
};
G_DEFINE_TYPE(NMSupplicantConfig, nm_supplicant_config, G_TYPE_OBJECT)
#define NM_SUPPLICANT_CONFIG_GET_PRIVATE(self) \
_NM_GET_PRIVATE(self, NMSupplicantConfig, NM_IS_SUPPLICANT_CONFIG)
/*****************************************************************************/
static gboolean
_get_capability(NMSupplicantConfigPrivate *priv, NMSupplCapType type)
{
return NM_SUPPL_CAP_MASK_GET(priv->capabilities, type) == NM_TERNARY_TRUE;
}
NMSupplicantConfig *
nm_supplicant_config_new(NMSupplCapMask capabilities)
{
NMSupplicantConfigPrivate *priv;
NMSupplicantConfig *self;
self = g_object_new(NM_TYPE_SUPPLICANT_CONFIG, NULL);
priv = NM_SUPPLICANT_CONFIG_GET_PRIVATE(self);
priv->capabilities = capabilities;
return self;
}
static void
config_option_free(ConfigOption *opt)
{
g_free(opt->value);
g_slice_free(ConfigOption, opt);
}
static void
nm_supplicant_config_init(NMSupplicantConfig *self)
{
NMSupplicantConfigPrivate *priv = NM_SUPPLICANT_CONFIG_GET_PRIVATE(self);
priv->config = g_hash_table_new_full(nm_str_hash,
g_str_equal,
g_free,
(GDestroyNotify) config_option_free);
priv->ap_scan = 1;
priv->dispose_has_run = FALSE;
}
static gboolean
nm_supplicant_config_add_option_with_type(NMSupplicantConfig *self,
const char *key,
const char *value,
gint32 len,
NMSupplOptType opt_type,
const char *display_value,
GError **error)
{
NMSupplicantConfigPrivate *priv;
ConfigOption *old_opt;
ConfigOption *opt;
NMSupplOptType type;
g_return_val_if_fail(NM_IS_SUPPLICANT_CONFIG(self), FALSE);
g_return_val_if_fail(key != NULL, FALSE);
g_return_val_if_fail(value != NULL, FALSE);
nm_assert(!error || !*error);
priv = NM_SUPPLICANT_CONFIG_GET_PRIVATE(self);
if (len < 0)
len = strlen(value);
if (opt_type != NM_SUPPL_OPT_TYPE_INVALID)
type = opt_type;
else {
type = nm_supplicant_settings_verify_setting(key, value, len);
if (type == NM_SUPPL_OPT_TYPE_INVALID) {
gs_free char *str_free = NULL;
const char *str;
str = nm_utils_buf_utf8safe_escape(value,
len,
NM_UTILS_STR_UTF8_SAFE_FLAG_ESCAPE_CTRL,
&str_free);
str = nm_strquote_a(255, str);
g_set_error(error,
NM_SUPPLICANT_ERROR,
NM_SUPPLICANT_ERROR_CONFIG,
"key '%s' and/or value %s invalid",
key,
display_value ?: str);
return FALSE;
}
}
old_opt = (ConfigOption *) g_hash_table_lookup(priv->config, key);
if (old_opt) {
g_set_error(error,
NM_SUPPLICANT_ERROR,
NM_SUPPLICANT_ERROR_CONFIG,
"key '%s' already configured",
key);
return FALSE;
}
opt = g_slice_new(ConfigOption);
*opt = (ConfigOption){
.value = nm_memdup_nul(value, len),
.len = len,
.type = type,
};
{
char buf[255];
memset(&buf[0], 0, sizeof(buf));
memcpy(&buf[0], opt->value, opt->len > 254 ? 254 : opt->len);
nm_log_info(LOGD_SUPPLICANT,
"Config: added '%s' value '%s'",
key,
display_value ?: &buf[0]);
}
g_hash_table_insert(priv->config, g_strdup(key), opt);
return TRUE;
}
static gboolean
nm_supplicant_config_add_option(NMSupplicantConfig *self,
const char *key,
const char *value,
gint32 len,
const char *display_value,
GError **error)
{
return nm_supplicant_config_add_option_with_type(self,
key,
value,
len,
NM_SUPPL_OPT_TYPE_INVALID,
display_value,
error);
}
static gboolean
nm_supplicant_config_add_blob(NMSupplicantConfig *self,
const char *key,
GBytes *value,
const char *blobid,
GError **error)
{
NMSupplicantConfigPrivate *priv;
ConfigOption *old_opt;
ConfigOption *opt;
NMSupplOptType type;
const guint8 *data;
gsize data_len;
g_return_val_if_fail(NM_IS_SUPPLICANT_CONFIG(self), FALSE);
g_return_val_if_fail(key != NULL, FALSE);
g_return_val_if_fail(value != NULL, FALSE);
g_return_val_if_fail(blobid != NULL, FALSE);
data = g_bytes_get_data(value, &data_len);
g_return_val_if_fail(data_len > 0, FALSE);
priv = NM_SUPPLICANT_CONFIG_GET_PRIVATE(self);
type = nm_supplicant_settings_verify_setting(key, (const char *) data, data_len);
if (type == NM_SUPPL_OPT_TYPE_INVALID) {
g_set_error(error,
NM_SUPPLICANT_ERROR,
NM_SUPPLICANT_ERROR_CONFIG,
"key '%s' and/or its contained value is invalid",
key);
return FALSE;
}
old_opt = (ConfigOption *) g_hash_table_lookup(priv->config, key);
if (old_opt) {
g_set_error(error,
NM_SUPPLICANT_ERROR,
NM_SUPPLICANT_ERROR_CONFIG,
"key '%s' already configured",
key);
return FALSE;
}
opt = g_slice_new0(ConfigOption);
opt->value = g_strdup_printf("blob://%s", blobid);
opt->len = strlen(opt->value);
opt->type = type;
nm_log_info(LOGD_SUPPLICANT, "Config: added '%s' value '%s'", key, opt->value);
g_hash_table_insert(priv->config, g_strdup(key), opt);
if (!priv->blobs) {
priv->blobs =
g_hash_table_new_full(nm_str_hash, g_str_equal, g_free, (GDestroyNotify) g_bytes_unref);
}
g_hash_table_insert(priv->blobs, g_strdup(blobid), g_bytes_ref(value));
return TRUE;
}
static gboolean
nm_supplicant_config_add_blob_for_connection(NMSupplicantConfig *self,
GBytes *field,
const char *name,
const char *con_uid,
GError **error)
{
if (field && g_bytes_get_size(field)) {
gs_free char *uid = NULL;
char *p;
uid = g_strdup_printf("%s-%s", con_uid, name);
for (p = uid; *p; p++) {
if (*p == '/')
*p = '-';
}
if (!nm_supplicant_config_add_blob(self, name, field, uid, error))
return FALSE;
}
return TRUE;
}
static void
nm_supplicant_config_finalize(GObject *object)
{
NMSupplicantConfigPrivate *priv = NM_SUPPLICANT_CONFIG_GET_PRIVATE(object);
g_hash_table_destroy(priv->config);
nm_clear_pointer(&priv->blobs, g_hash_table_destroy);
G_OBJECT_CLASS(nm_supplicant_config_parent_class)->finalize(object);
}
static void
nm_supplicant_config_class_init(NMSupplicantConfigClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS(klass);
object_class->finalize = nm_supplicant_config_finalize;
}
guint32
nm_supplicant_config_get_ap_scan(NMSupplicantConfig *self)
{
g_return_val_if_fail(NM_IS_SUPPLICANT_CONFIG(self), 1);
return NM_SUPPLICANT_CONFIG_GET_PRIVATE(self)->ap_scan;
}
gboolean
nm_supplicant_config_fast_required(NMSupplicantConfig *self)
{
g_return_val_if_fail(NM_IS_SUPPLICANT_CONFIG(self), FALSE);
return NM_SUPPLICANT_CONFIG_GET_PRIVATE(self)->fast_required;
}
GVariant *
nm_supplicant_config_to_variant(NMSupplicantConfig *self)
{
NMSupplicantConfigPrivate *priv;
GVariantBuilder builder;
GHashTableIter iter;
ConfigOption *option;
const char *key;
g_return_val_if_fail(NM_IS_SUPPLICANT_CONFIG(self), NULL);
priv = NM_SUPPLICANT_CONFIG_GET_PRIVATE(self);
g_variant_builder_init(&builder, G_VARIANT_TYPE_VARDICT);
g_hash_table_iter_init(&iter, priv->config);
while (g_hash_table_iter_next(&iter, (gpointer) &key, (gpointer) &option)) {
switch (option->type) {
case NM_SUPPL_OPT_TYPE_INT:
g_variant_builder_add(&builder, "{sv}", key, g_variant_new_int32(atoi(option->value)));
break;
case NM_SUPPL_OPT_TYPE_BYTES:
case NM_SUPPL_OPT_TYPE_UTF8:
g_variant_builder_add(&builder,
"{sv}",
key,
nm_g_variant_new_ay((const guint8 *) option->value, option->len));
break;
case NM_SUPPL_OPT_TYPE_KEYWORD:
case NM_SUPPL_OPT_TYPE_STRING:
g_variant_builder_add(&builder, "{sv}", key, g_variant_new_string(option->value));
break;
default:
break;
}
}
return g_variant_builder_end(&builder);
}
GHashTable *
nm_supplicant_config_get_blobs(NMSupplicantConfig *self)
{
g_return_val_if_fail(NM_IS_SUPPLICANT_CONFIG(self), NULL);
return NM_SUPPLICANT_CONFIG_GET_PRIVATE(self)->blobs;
}
static const char *
wifi_freqs_to_string(gboolean bg_band)
{
static const char *str_2ghz = NULL;
static const char *str_5ghz = NULL;
const char **f_p;
const char *f;
f_p = bg_band ? &str_2ghz : &str_5ghz;
again:
f = g_atomic_pointer_get(f_p);
if (G_UNLIKELY(!f)) {
nm_auto_str_buf NMStrBuf strbuf = NM_STR_BUF_INIT(400, FALSE);
const guint *freqs;
int i;
freqs = bg_band ? nm_utils_wifi_2ghz_freqs() : nm_utils_wifi_5ghz_freqs();
for (i = 0; freqs[i]; i++) {
if (i > 0)
nm_str_buf_append_c(&strbuf, ' ');
nm_str_buf_append_printf(&strbuf, "%u", freqs[i]);
}
f = g_strdup(nm_str_buf_get_str(&strbuf));
if (!g_atomic_pointer_compare_and_exchange(f_p, NULL, f)) {
g_free((char *) f);
goto again;
}
}
return f;
}
gboolean
nm_supplicant_config_add_setting_macsec(NMSupplicantConfig *self,
NMSettingMacsec *setting,
NMSettingMacsecOffload offload,
GError **error)
{
const char *value;
char buf[32];
int port;
gsize key_len;
const char *offload_str = NULL;
g_return_val_if_fail(NM_IS_SUPPLICANT_CONFIG(self), FALSE);
g_return_val_if_fail(setting != NULL, FALSE);
g_return_val_if_fail(!error || !*error, FALSE);
if (!nm_supplicant_config_add_option(self, "macsec_policy", "1", -1, NULL, error))
return FALSE;
value = nm_setting_macsec_get_encrypt(setting) ? "0" : "1";
if (!nm_supplicant_config_add_option(self, "macsec_integ_only", value, -1, NULL, error))
return FALSE;
port = nm_setting_macsec_get_port(setting);
if (port > 0 && port < 65534) {
g_snprintf(buf, sizeof(buf), "%d", port);
if (!nm_supplicant_config_add_option(self, "macsec_port", buf, -1, NULL, error))
return FALSE;
}
if (nm_setting_macsec_get_mode(setting) == NM_SETTING_MACSEC_MODE_PSK) {
guint8 buffer_cak[NM_SETTING_MACSEC_MKA_CAK_LENGTH / 2];
guint8 buffer_ckn[NM_SETTING_MACSEC_MKA_CKN_LENGTH / 2];
if (!nm_supplicant_config_add_option(self, "key_mgmt", "NONE", -1, NULL, error))
return FALSE;
value = nm_setting_macsec_get_mka_cak(setting);
if (!value || !nm_utils_hexstr2bin_buf(value, FALSE, FALSE, NULL, buffer_cak)) {
g_set_error_literal(error,
NM_SUPPLICANT_ERROR,
NM_SUPPLICANT_ERROR_CONFIG,
value ? "invalid MKA CAK" : "missing MKA CAK");
return FALSE;
}
if (!nm_supplicant_config_add_option(self,
"mka_cak",
(char *) buffer_cak,
sizeof(buffer_cak),
"<hidden>",
error))
return FALSE;
value = nm_setting_macsec_get_mka_ckn(setting);
if (!value
|| !nm_utils_hexstr2bin_full(value,
FALSE,
FALSE,
FALSE,
NULL,
0,
buffer_ckn,
G_N_ELEMENTS(buffer_ckn),
&key_len)) {
g_set_error_literal(error,
NM_SUPPLICANT_ERROR,
NM_SUPPLICANT_ERROR_CONFIG,
value ? "invalid MKA CKN" : "missing MKA CKN");
return FALSE;
}
if (!nm_supplicant_config_add_option(self,
"mka_ckn",
(char *) buffer_ckn,
key_len,
value,
error))
return FALSE;
}
switch (offload) {
case NM_SETTING_MACSEC_OFFLOAD_OFF:
/* This is the default in wpa_supplicant. Don't set the option,
* so that if user doesn't enable offload, the connection still
* works with previous versions of the supplicant.
*/
break;
case NM_SETTING_MACSEC_OFFLOAD_PHY:
offload_str = "1";
break;
case NM_SETTING_MACSEC_OFFLOAD_MAC:
offload_str = "2";
break;
case NM_SETTING_MACSEC_OFFLOAD_DEFAULT:
nm_assert_not_reached();
break;
}
if (offload_str
&& !nm_supplicant_config_add_option(self, "macsec_offload", offload_str, -1, NULL, error)) {
return FALSE;
}
return TRUE;
}
static void
get_ap_params(guint freq,
NMSettingWirelessChannelWidth width,
guint *out_ht40,
int *out_max_oper_chwidth,
guint *out_center_freq)
{
*out_ht40 = 0;
*out_max_oper_chwidth = -1;
*out_center_freq = 0;
switch (width) {
case NM_SETTING_WIRELESS_CHANNEL_WIDTH_40MHZ:
*out_ht40 = 1;
*out_max_oper_chwidth = 0;
return;
case NM_SETTING_WIRELESS_CHANNEL_WIDTH_80MHZ:
{
guint channel;
if (freq < 5000) {
/* the setting is not valid */
nm_assert_not_reached();
return;
}
/* Determine the center channel according to the table at
* https://en.wikipedia.org/wiki/List_of_WLAN_channels */
channel = (freq - 5000) / 5;
channel = ((channel / 4 - 1) / 4) * 16 + 10;
*out_ht40 = 1;
*out_max_oper_chwidth = 1;
*out_center_freq = 5000 + 5 * channel;
return;
}
case NM_SETTING_WIRELESS_CHANNEL_WIDTH_AUTO:
case NM_SETTING_WIRELESS_CHANNEL_WIDTH_20MHZ:
default:
/* in case of unknown enum value, fall back to the safest parameters */
return;
}
}
gboolean
nm_supplicant_config_add_setting_wireless(NMSupplicantConfig *self,
NMSettingWireless *setting,
guint32 fixed_freq,
GError **error)
{
NMSupplicantConfigPrivate *priv;
gboolean is_adhoc, is_ap, is_mesh;
const char *mode, *band;
guint32 channel;
GBytes *ssid;
const char *bssid;
g_return_val_if_fail(NM_IS_SUPPLICANT_CONFIG(self), FALSE);
g_return_val_if_fail(setting != NULL, FALSE);
g_return_val_if_fail(!error || !*error, FALSE);
priv = NM_SUPPLICANT_CONFIG_GET_PRIVATE(self);
mode = nm_setting_wireless_get_mode(setting);
is_adhoc = nm_streq0(mode, "adhoc");
is_ap = nm_streq0(mode, "ap");
is_mesh = nm_streq0(mode, "mesh");
if (is_adhoc || is_ap)
priv->ap_scan = 2;
else
priv->ap_scan = 1;
ssid = nm_setting_wireless_get_ssid(setting);
if (!nm_supplicant_config_add_option(self,
"ssid",
(char *) g_bytes_get_data(ssid, NULL),
g_bytes_get_size(ssid),
NULL,
error))
return FALSE;
if (is_adhoc) {
if (!nm_supplicant_config_add_option(self, "mode", "1", -1, NULL, error))
return FALSE;
}
if (is_ap) {
if (!nm_supplicant_config_add_option(self, "mode", "2", -1, NULL, error))
return FALSE;
if (nm_setting_wireless_get_hidden(setting)
&& !nm_supplicant_config_add_option(self,
"ignore_broadcast_ssid",
"1",
-1,
NULL,
error))
return FALSE;
}
if (is_mesh) {
if (!nm_supplicant_config_add_option(self, "mode", "5", -1, NULL, error))
return FALSE;
}
if ((is_adhoc || is_ap || is_mesh) && fixed_freq) {
gs_free char *str_freq = NULL;
guint ht40;
int max_oper_chwidth;
guint center_freq;
str_freq = g_strdup_printf("%u", fixed_freq);
if (!nm_supplicant_config_add_option(self, "frequency", str_freq, -1, NULL, error))
return FALSE;
if (is_ap) {
get_ap_params(fixed_freq,
nm_setting_wireless_get_channel_width(setting),
&ht40,
&max_oper_chwidth,
¢er_freq);
if (!nm_supplicant_config_add_option(self, "ht40", ht40 ? "1" : "0", -1, NULL, error))
return FALSE;
if (center_freq != 0) {
g_free(str_freq);
str_freq = g_strdup_printf("%u", center_freq);
if (!nm_supplicant_config_add_option(self,
"vht_center_freq1",
str_freq,
-1,
NULL,
error))
return FALSE;
}
if (max_oper_chwidth >= 0) {
g_free(str_freq);
str_freq = g_strdup_printf("%u", max_oper_chwidth);
if (!nm_supplicant_config_add_option(self,
"max_oper_chwidth",
str_freq,
-1,
NULL,
error))
return FALSE;
}
}
}
/* Except for Ad-Hoc, Hotspot and Mesh, request that the driver probe for the
* specific SSID we want to associate with.
*/
if (!(is_adhoc || is_ap || is_mesh)) {
if (!nm_supplicant_config_add_option(self, "scan_ssid", "1", -1, NULL, error))
return FALSE;
}
bssid = nm_setting_wireless_get_bssid(setting);
if (bssid) {
if (!nm_supplicant_config_add_option(self, "bssid", bssid, strlen(bssid), NULL, error))
return FALSE;
}
band = nm_setting_wireless_get_band(setting);
channel = nm_setting_wireless_get_channel(setting);
if (band) {
if (channel) {
guint32 freq;
gs_free char *str_freq = NULL;
freq = nm_utils_wifi_channel_to_freq(channel, band);
str_freq = g_strdup_printf("%u", freq);
if (!nm_supplicant_config_add_option(self, "freq_list", str_freq, -1, NULL, error))
return FALSE;
} else {
const char *freqs = NULL;
if (nm_streq(band, "a"))
freqs = wifi_freqs_to_string(FALSE);
else if (nm_streq(band, "bg"))
freqs = wifi_freqs_to_string(TRUE);
if (freqs
&& !nm_supplicant_config_add_option(self,
"freq_list",
freqs,
strlen(freqs),
NULL,
error))
return FALSE;
}
}
return TRUE;
}
gboolean
nm_supplicant_config_add_bgscan(NMSupplicantConfig *self,
NMConnection *connection,
guint num_seen_bssids,
GError **error)
{
NMSettingWireless *s_wifi;
NMSettingWirelessSecurity *s_wsec;
const char *bgscan;
s_wifi = nm_connection_get_setting_wireless(connection);
g_assert(s_wifi);
/* Don't scan when a shared connection (either AP or Ad-Hoc) is active;
* it will disrupt connected clients.
*/
if (NM_IN_STRSET(nm_setting_wireless_get_mode(s_wifi),
NM_SETTING_WIRELESS_MODE_AP,
NM_SETTING_WIRELESS_MODE_ADHOC))
return TRUE;
/* Don't scan when the connection is locked to a specific AP, since
* intra-ESS roaming (which requires periodic scanning) isn't being
* used due to the specific AP lock. (bgo #513820)
*/
if (nm_setting_wireless_get_bssid(s_wifi))
return TRUE;
/* Default to a very long bgscan interval when signal is OK on the assumption
* that either (a) there aren't multiple APs and we don't need roaming, or
* (b) since EAP/802.1x isn't used and thus there are fewer steps to fail
* during a roam, we can wait longer before scanning for roam candidates.
*/
bgscan = "simple:30:-70:86400";
/* If using WPA Enterprise, Dynamic WEP or we have seen more than one AP use
* a shorter bgscan interval on the assumption that this is a multi-AP ESS
* in which we want more reliable roaming between APs. Thus trigger scans
* when the signal is still somewhat OK so we have an up-to-date roam
* candidate list when the signal gets bad.
*/
if (num_seen_bssids > 1u
|| ((s_wsec = nm_connection_get_setting_wireless_security(connection))
&& NM_IN_STRSET(nm_setting_wireless_security_get_key_mgmt(s_wsec),
"ieee8021x",
"wpa-eap",
"wpa-eap-suite-b-192")))
bgscan = "simple:30:-65:300";
return nm_supplicant_config_add_option(self, "bgscan", bgscan, -1, FALSE, error);
}
static gboolean
add_string_val(NMSupplicantConfig *self,
const char *field,
const char *name,
gboolean ucase,
const char *display_value,
GError **error)
{
if (field) {
gs_free char *value = NULL;
if (ucase) {
value = g_ascii_strup(field, -1);
field = value;
}
return nm_supplicant_config_add_option(self,
name,
field,
strlen(field),
display_value,
error);
}
return TRUE;
}
#define ADD_STRING_LIST_VAL(self, \
setting, \
setting_name, \
field, \
field_plural, \
name, \
separator, \
ucase, \
display_value, \
error) \
({ \
typeof(setting) _setting = (setting); \
gboolean _success = TRUE; \
\
if (nm_setting_##setting_name##_get_num_##field_plural(_setting)) { \
const char _separator = (separator); \
GString *_str = g_string_new(NULL); \
guint _k, _n; \
\
_n = nm_setting_##setting_name##_get_num_##field_plural(_setting); \
for (_k = 0; _k < _n; _k++) { \
const char *item = nm_setting_##setting_name##_get_##field(_setting, _k); \
\
if (!_str->len) { \
g_string_append(_str, item); \
} else { \
g_string_append_c(_str, _separator); \
g_string_append(_str, item); \
} \
} \
if ((ucase)) \
g_string_ascii_up(_str); \
if (_str->len) { \
if (!nm_supplicant_config_add_option((self), \
(name), \
_str->str, \
-1, \
(display_value), \
(error))) \
_success = FALSE; \
} \
g_string_free(_str, TRUE); \
} \
_success; \
})
static void
wep128_passphrase_hash(const char *input, gsize input_len, guint8 *digest /* 13 bytes */)
{
nm_auto_free_checksum GChecksum *sum = NULL;
guint8 md5[NM_UTILS_CHECKSUM_LENGTH_MD5];
guint8 data[64];
int i;
nm_assert(input);
nm_assert(input_len);
nm_assert(digest);
/* Get at least 64 bytes by repeating the passphrase into the buffer */
for (i = 0; i < sizeof(data); i++)
data[i] = input[i % input_len];
sum = g_checksum_new(G_CHECKSUM_MD5);
g_checksum_update(sum, data, sizeof(data));
nm_utils_checksum_get_digest(sum, md5);
/* WEP104 keys are 13 bytes in length (26 hex characters) */
memcpy(digest, md5, 13);
}
static gboolean
add_wep_key(NMSupplicantConfig *self,
const char *key,
const char *name,
NMWepKeyType wep_type,
GError **error)
{
gsize key_len;
if (!key || (key_len = strlen(key)) == 0)
return TRUE;
if (wep_type == NM_WEP_KEY_TYPE_UNKNOWN) {
if (nm_utils_wep_key_valid(key, NM_WEP_KEY_TYPE_KEY))
wep_type = NM_WEP_KEY_TYPE_KEY;
else if (nm_utils_wep_key_valid(key, NM_WEP_KEY_TYPE_PASSPHRASE))
wep_type = NM_WEP_KEY_TYPE_PASSPHRASE;
}
if ((wep_type == NM_WEP_KEY_TYPE_UNKNOWN) || (wep_type == NM_WEP_KEY_TYPE_KEY)) {
if ((key_len == 10) || (key_len == 26)) {
guint8 buffer[26 / 2];
if (!nm_utils_hexstr2bin_full(key,
FALSE,
FALSE,
FALSE,
NULL,
key_len / 2,
buffer,
sizeof(buffer),
NULL)) {
g_set_error(error,
NM_SUPPLICANT_ERROR,
NM_SUPPLICANT_ERROR_CONFIG,
"cannot add wep-key %s to supplicant config because key is not hex",
name);
return FALSE;
}
if (!nm_supplicant_config_add_option(self,
name,
(char *) buffer,
key_len / 2,
"<hidden>",
error))
return FALSE;
} else if ((key_len == 5) || (key_len == 13)) {
if (!nm_supplicant_config_add_option(self, name, key, key_len, "<hidden>", error))
return FALSE;
} else {
g_set_error(
error,
NM_SUPPLICANT_ERROR,
NM_SUPPLICANT_ERROR_CONFIG,
"Cannot add wep-key %s to supplicant config because key-length %u is invalid",
name,
(guint) key_len);
return FALSE;
}
} else if (wep_type == NM_WEP_KEY_TYPE_PASSPHRASE) {
guint8 digest[13];
wep128_passphrase_hash(key, key_len, digest);
if (!nm_supplicant_config_add_option(self,
name,
(const char *) digest,
sizeof(digest),
"<hidden>",
error))
return FALSE;
}
return TRUE;
}
gboolean
nm_supplicant_config_add_setting_wireless_security(NMSupplicantConfig *self,
NMSettingWirelessSecurity *setting,
NMSetting8021x *setting_8021x,
const char *con_uuid,
const char *mode,
guint32 mtu,
NMSettingWirelessSecurityPmf pmf,
NMSettingWirelessSecurityFils fils,
GError **error)
{
NMSupplicantConfigPrivate *priv = NM_SUPPLICANT_CONFIG_GET_PRIVATE(self);
nm_auto_free_gstring GString *key_mgmt_conf = NULL;
const char *key_mgmt, *auth_alg;
const char *psk;
gboolean set_pmf, wps_disabled;
gboolean is_ap;
g_return_val_if_fail(NM_IS_SUPPLICANT_CONFIG(self), FALSE);
g_return_val_if_fail(setting != NULL, FALSE);
g_return_val_if_fail(con_uuid != NULL, FALSE);
g_return_val_if_fail(!error || !*error, FALSE);
/* Currently wpa_supplicant doesn't support FT in AP mode. Even
* if it did, it would require additional parameters as the nas
* identifier and the mobility domain. Therefore we disable all
* FT key-mgmts in AP mode.
*/
is_ap = nm_streq0(mode, NM_SETTING_WIRELESS_MODE_AP);
/* Check if we actually support FILS */
if (!_get_capability(priv, NM_SUPPL_CAP_TYPE_FILS)) {
if (fils == NM_SETTING_WIRELESS_SECURITY_FILS_REQUIRED) {
g_set_error_literal(error,
NM_SUPPLICANT_ERROR,
NM_SUPPLICANT_ERROR_CONFIG,
"Supplicant does not support FILS");
return FALSE;
} else if (fils == NM_SETTING_WIRELESS_SECURITY_FILS_OPTIONAL)
fils = NM_SETTING_WIRELESS_SECURITY_FILS_DISABLE;
}
key_mgmt = nm_setting_wireless_security_get_key_mgmt(setting);
key_mgmt_conf = g_string_new("");
if (nm_streq(key_mgmt, "none")) {
g_string_append(key_mgmt_conf, "NONE");
} else if (nm_streq(key_mgmt, "ieee8021x")) {
g_string_append(key_mgmt_conf, "IEEE8021X");
} else if (nm_streq(key_mgmt, "owe")) {
pmf = NM_SETTING_WIRELESS_SECURITY_PMF_REQUIRED;
g_string_append(key_mgmt_conf, "OWE");
} else if (nm_streq(key_mgmt, "wpa-psk")) {
if (pmf != NM_SETTING_WIRELESS_SECURITY_PMF_REQUIRED)
g_string_append(key_mgmt_conf, "WPA-PSK");
if (_get_capability(priv, NM_SUPPL_CAP_TYPE_PMF))
g_string_append(key_mgmt_conf, " WPA-PSK-SHA256");
if (!is_ap && _get_capability(priv, NM_SUPPL_CAP_TYPE_FT))
g_string_append(key_mgmt_conf, " FT-PSK");
/* For NM "key-mgmt=wpa-psk" doesn't strictly mean WPA1/wPA2 only,
* but also allows WPA3 (SAE), so that existing connections can
* benefit from the improved security when the AP gets upgraded.
*
* According to WPA3_Specification_v3.0 section 2.3, when operating
* in WPA3-Personal transition mode a STA:
*
* - should allow AKM suite selector: 00-0F-AC:6 (WPA-PSK-SHA256) to
* be selected for an association;
* - shall negotiate PMF when associating to an AP using SAE.
*
* Those conditions are met when the interface has capabilities
* SAE, PMF, BIP.