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https://github.com/vanhoefm/fragattacks.git
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2901bc2725
The name argument to bgscan_init() cannot be NULL since the only caller already checks this before the call. Signed-off-by: Jouni Malinen <j@w1.fi>
110 lines
2.4 KiB
C
110 lines
2.4 KiB
C
/*
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* WPA Supplicant - background scan and roaming interface
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* Copyright (c) 2009-2010, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "includes.h"
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#include "common.h"
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#include "wpa_supplicant_i.h"
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#include "config_ssid.h"
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#include "bgscan.h"
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static const struct bgscan_ops * bgscan_modules[] = {
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#ifdef CONFIG_BGSCAN_SIMPLE
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&bgscan_simple_ops,
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#endif /* CONFIG_BGSCAN_SIMPLE */
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#ifdef CONFIG_BGSCAN_LEARN
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&bgscan_learn_ops,
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#endif /* CONFIG_BGSCAN_LEARN */
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NULL
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};
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int bgscan_init(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
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const char *name)
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{
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const char *params;
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size_t nlen;
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int i;
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const struct bgscan_ops *ops = NULL;
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bgscan_deinit(wpa_s);
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params = os_strchr(name, ':');
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if (params == NULL) {
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params = "";
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nlen = os_strlen(name);
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} else {
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nlen = params - name;
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params++;
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}
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for (i = 0; bgscan_modules[i]; i++) {
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if (os_strncmp(name, bgscan_modules[i]->name, nlen) == 0) {
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ops = bgscan_modules[i];
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break;
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}
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}
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if (ops == NULL) {
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wpa_printf(MSG_ERROR, "bgscan: Could not find module "
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"matching the parameter '%s'", name);
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return -1;
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}
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wpa_s->bgscan_priv = ops->init(wpa_s, params, ssid);
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if (wpa_s->bgscan_priv == NULL)
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return -1;
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wpa_s->bgscan = ops;
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wpa_printf(MSG_DEBUG, "bgscan: Initialized module '%s' with "
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"parameters '%s'", ops->name, params);
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return 0;
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}
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void bgscan_deinit(struct wpa_supplicant *wpa_s)
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{
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if (wpa_s->bgscan && wpa_s->bgscan_priv) {
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wpa_printf(MSG_DEBUG, "bgscan: Deinitializing module '%s'",
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wpa_s->bgscan->name);
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wpa_s->bgscan->deinit(wpa_s->bgscan_priv);
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wpa_s->bgscan = NULL;
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wpa_s->bgscan_priv = NULL;
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}
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}
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int bgscan_notify_scan(struct wpa_supplicant *wpa_s,
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struct wpa_scan_results *scan_res)
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{
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if (wpa_s->bgscan && wpa_s->bgscan_priv)
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return wpa_s->bgscan->notify_scan(wpa_s->bgscan_priv,
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scan_res);
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return 0;
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}
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void bgscan_notify_beacon_loss(struct wpa_supplicant *wpa_s)
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{
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if (wpa_s->bgscan && wpa_s->bgscan_priv)
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wpa_s->bgscan->notify_beacon_loss(wpa_s->bgscan_priv);
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}
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void bgscan_notify_signal_change(struct wpa_supplicant *wpa_s, int above,
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int current_signal, int current_noise,
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int current_txrate)
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{
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if (wpa_s->bgscan && wpa_s->bgscan_priv)
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wpa_s->bgscan->notify_signal_change(wpa_s->bgscan_priv, above,
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current_signal,
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current_noise,
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current_txrate);
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}
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