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wsc: Properly write provisioning files with a passphrase

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Credentials obtained can now be either in passphrase or PSK form.  Prior
to commit 7a9891dbef, passphrase credentials were always converted to
PSK form by invoking crypto_psk_from_passphrase.  This was changed in
order to support WPA3 networks.  Unfortunately the provisioning logic
was never properly updated.  Fix that, and also try to not overwrite any
existing settings in case WSC is providing credentials for networks that
are already known.

Fixes: 7a9891dbef ("wsc: store plain text passphrase if available")
This commit is contained in:
Denis Kenzior 2021-07-06 13:38:56 -05:00
parent 3f1e4cce65
commit 10e5bee5ef
1 changed files with 28 additions and 9 deletions
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31
src/wsc.c
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@ -28,6 +28,7 @@
#include <stdio.h>
#include <ell/ell.h>
#include "ell/useful.h"
#include "src/missing.h"
#include "src/module.h"
#include "src/dbus.h"
@ -40,7 +41,6 @@
#include "src/util.h"
#include "src/handshake.h"
#include "src/eap-wsc.h"
#include "src/crypto.h"
#include "src/common.h"
#include "src/storage.h"
#include "src/iwd.h"
@ -525,21 +525,40 @@ static void wsc_store_credentials(struct wsc_credentials_info *creds,
{
unsigned int i;
/* We don't store any non-open/psk credentials */
for (i = 0; i < n_creds; i++) {
enum security security = creds[i].security;
const char *ssid = creds[i].ssid;
struct l_settings *settings = l_settings_new();
_auto_(l_settings_free) struct l_settings *settings =
l_settings_new();
_auto_(l_free) char *path =
storage_get_network_file_path(security, ssid);
l_debug("Storing credential for '%s(%s)'", ssid,
security_to_str(security));
if (l_settings_load_from_file(settings, path)) {
/*
* Nothing to do,
* so don't overwrite any existing settings
*/
if (security == SECURITY_NONE)
continue;
if (security == SECURITY_PSK)
/* Remove any existing Security keys */
l_settings_remove_group(settings, "Security");
}
if (security == SECURITY_PSK) {
if (creds[i].has_passphrase)
l_settings_set_string(settings, "Security",
"Passphrase", creds[i].passphrase);
else
l_settings_set_bytes(settings, "Security",
"PreSharedKey", creds[i].psk,
sizeof(creds[i].psk));
}
l_debug("Storing credential for '%s(%s)'", ssid,
security_to_str(security));
storage_network_sync(security, ssid, settings);
l_settings_free(settings);
}
}