linux 编程 搜索wifi

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <nmcli/nmcli.h>

void list_wifi_networks() {
    NmClient *client = nm_client_new(NULL, NULL);
    if (!client) {
        fprintf(stderr, "Failed to create NMClient\n");
        return;
    }

    GError *error = NULL;
    NmDevice *device = nm_client_get_device_by_type(client, NM_DEVICE_TYPE_WIFI, &error);
    if (error) {
        fprintf(stderr, "Failed to get WiFi device: %s\n", error->message);
        g_error_free(error);
        g_object_unref(client);
        return;
    }

    GPtrArray *networks = nm_device_get_available_connections(device, &error);
    if (error) {
        fprintf(stderr, "Failed to scan networks: %s\n", error->message);
        g_error_free(error);
        g_object_unref(device);
        g_object_unref(client);
        return;
    }

    for (int i = 0; i < networks->len; ++i) {
        NmConnection *conn = g_ptr_array_index(networks, i);
        const char *ssid = nm_connection_get_setting_connection_ssid(conn);
        printf("SSID: %s\n", ssid ? ssid : "Unknown");
    }

    g_ptr_array_free(networks, TRUE);
    g_object_unref(device);
    g_object_unref(client);
}

int main() {
    list_wifi_networks();
    return 0;
}