esp8266混雜模式下的接收資料回撥函式 promisc_cb 解析資料 串列埠輸出。

#include <ESP8266WiFi.h> 
#include "./sniffer.h"
#define disable 0 
#define CHANNEL 1
#define BAUD_RATE 115200
#define CHANNEL_HOPPING true //if true it will scan on all channels
#define MAX_CHANNEL 11 //(only necessary if channelHopping is true)
#define HOP_INTERVAL 214 //in ms (only necessary if channelHopping is true)
// Channel to perform deauth


int ch = CHANNEL;
unsigned long lastChannelChange = 0;

uint8_t channel = 1;

// Access point MAC to deauth
uint8_t ap[6] = {0x00,0x01,0x02,0x03,0x04,0x05};

// Client MAC to deauth
uint8_t client[6] = {0xc4, 0x6a, 0xb7, 0x9f, 0xcc, 0x34};

// Sequence number of a packet from AP to client
uint16_t seq_n = 0;

// Packet buffer
uint8_t packet_buffer[64];

uint8_t temp_mac[6] = {0xc4, 0x6a, 0xb7, 0x9f, 0xcc, 0x34};


extern "C" {
  #include "user_interface.h"
}



void promisc_cb(uint8_t *buf, uint16_t len)
{
    if (len == 12){
        struct RxControl *sniffer = (struct RxControl*) buf;
    } else if (len == 128) {
        struct sniffer_buf2 *sniffer = (struct sniffer_buf2*) buf;
    } else {
        struct sniffer_buf *sniffer = (struct sniffer_buf*) buf;
        int i=0;
        // Check MACs

        // 如果MAC地址和上一次一樣就返回
    if(0==memcmp(temp_mac, &sniffer->buf[4], 6)){
      return;
    }

    // 快取上次的MAC，避免重複列印
    for (i=0; i<6; i++){
      temp_mac[i] = sniffer->buf[i+4];
    }

    #if SNIFFER_TEST
      Serial.printf("-> %3d: %d", wifi_get_channel(), len);
      printmac(sniffer->buf, 4);
      printmac(sniffer->buf, 10);
      Serial.printf("\n");
    #endif

    // 判斷client
        for (i=0; i<6; i++) if (sniffer->buf[i+4] != client[i]) return;
        printmac(sniffer->buf, 4);

        Serial.printf("\r\n");
        Serial.printf("\trssi:%d\r\n", sniffer->rx_ctrl.rssi);
        Serial.printf("\tchannel:%d\r\n", sniffer->rx_ctrl.channel);
        Serial.printf("\trate:%d\r\n", sniffer->rx_ctrl.rate);
        Serial.printf("\tsig_mode:%d\r\n",sniffer->rx_ctrl.sig_mode);
        

        // 判斷AP
       for (i=0; i<6; i++) if (sniffer->buf[i+10] != ap[i]) return;
        printmac(sniffer->buf, 10);

        //os_timer_disarm(&channelHop_timer);
        // Update sequence number
#if DEAUTH_ENABLE
        seq_n = sniffer->buf[23] * 0xFF + sniffer->buf[22];
#endif
    }
}




void setup() { 
  Serial.begin(BAUD_RATE);
  delay(2000);
  Serial.println();
  Serial.println("<<START>>");


 wifi_set_opmode(STATION_MODE);

 wifi_promiscuous_enable(0); 
 WiFi.disconnect();
 wifi_set_promiscuous_rx_cb(promisc_cb);   // Set up promiscuous callback 
  wifi_set_channel(channel); 
 wifi_promiscuous_enable(1); 
} 



void loop() { 

/* Channel Hopping */
  if(CHANNEL_HOPPING){
    unsigned long currentTime = millis();
    if(currentTime - lastChannelChange >= HOP_INTERVAL){
      lastChannelChange = currentTime;
      ch++; //increase channel
      if(ch > MAX_CHANNEL) ch = 1;
      wifi_set_channel(ch); //switch to new channel
    }
  }
  
  // channel = random(1,12); 
   // wifi_set_channel(channel);

}