bgscan learn: Add data file for storing learned network information
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c4d71c2505
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1 changed files with 62 additions and 0 deletions
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@ -31,9 +31,57 @@ struct bgscan_learn_data {
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int short_interval; /* use if signal < threshold */
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int long_interval; /* use if signal > threshold */
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struct os_time last_bgscan;
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char *fname;
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};
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static int bgscan_learn_load(struct bgscan_learn_data *data)
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{
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FILE *f;
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char buf[128];
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if (data->fname == NULL)
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return 0;
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f = fopen(data->fname, "r");
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if (f == NULL)
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return 0;
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wpa_printf(MSG_DEBUG, "bgscan learn: Loading data from %s",
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data->fname);
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if (fgets(buf, sizeof(buf), f) == NULL ||
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os_strncmp(buf, "wpa_supplicant-bgscan-learn\n", 28) != 0) {
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wpa_printf(MSG_INFO, "bgscan learn: Invalid data file %s",
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data->fname);
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fclose(f);
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return -1;
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}
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fclose(f);
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return 0;
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}
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static void bgscan_learn_save(struct bgscan_learn_data *data)
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{
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FILE *f;
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if (data->fname == NULL)
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return;
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wpa_printf(MSG_DEBUG, "bgscan learn: Saving data to %s",
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data->fname);
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f = fopen(data->fname, "w");
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if (f == NULL)
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return;
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fprintf(f, "wpa_supplicant-bgscan-learn\n");
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fclose(f);
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}
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static void bgscan_learn_timeout(void *eloop_ctx, void *timeout_ctx)
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{
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struct bgscan_learn_data *data = eloop_ctx;
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@ -85,6 +133,11 @@ static int bgscan_learn_get_params(struct bgscan_learn_data *data,
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}
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pos++;
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data->long_interval = atoi(pos);
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pos = os_strchr(pos, ':');
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if (pos) {
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pos++;
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data->fname = os_strdup(pos);
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}
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return 0;
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}
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@ -102,6 +155,7 @@ static void * bgscan_learn_init(struct wpa_supplicant *wpa_s,
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data->wpa_s = wpa_s;
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data->ssid = ssid;
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if (bgscan_learn_get_params(data, params) < 0) {
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os_free(data->fname);
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os_free(data);
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return NULL;
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}
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@ -110,6 +164,12 @@ static void * bgscan_learn_init(struct wpa_supplicant *wpa_s,
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if (data->long_interval <= 0)
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data->long_interval = 30;
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if (bgscan_learn_load(data) < 0) {
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os_free(data->fname);
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os_free(data);
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return NULL;
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}
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wpa_printf(MSG_DEBUG, "bgscan learn: Signal strength threshold %d "
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"Short bgscan interval %d Long bgscan interval %d",
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data->signal_threshold, data->short_interval,
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@ -131,9 +191,11 @@ static void * bgscan_learn_init(struct wpa_supplicant *wpa_s,
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static void bgscan_learn_deinit(void *priv)
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{
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struct bgscan_learn_data *data = priv;
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bgscan_learn_save(data);
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eloop_cancel_timeout(bgscan_learn_timeout, data, NULL);
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if (data->signal_threshold)
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wpa_drv_signal_monitor(data->wpa_s, 0, 0);
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os_free(data->fname);
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os_free(data);
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}
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