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esp8266-find-passive.ino
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esp8266-find-passive.ino
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#include "options.h"
#ifdef WIFIMANAGER
#include <FS.h> //this needs to be first, or it all crashes and burns...
#endif
#include <ESP8266WiFi.h> //https://github.com/esp8266/Arduino
#ifdef WIFIMANAGER
#include <DNSServer.h> //Local DNS Server used for redirecting all requests to the configuration portal
#include <ESP8266WebServer.h> //Local WebServer used to serve the configuration portal
#include <WiFiManager.h>
#define ARDUINOJSON_USE_LONG_LONG 1
#include <ArduinoJson.h>
#endif
#ifdef DEBUG
#define DPRINT(x) Serial.print(x)
#define DPRINTLN(x) Serial.println(x)
#else
#define DPRINT(x)
#define DPRINTLN(x)
#endif
#include "FindPassive.h"
#include "functions.h"
String find_server = FIND_SERVER;
String find_group = FIND_GROUP;
#define disable 0
#define enable 1
const long interval = SNIFF_INTERVAL;
int nothing_new = 0;
beaconinfo aps_known[MAX_APS_TRACKED]; // Array to save MACs of known APs
int aps_known_count = 0; // Number of known APs
probeinfo probes_known[MAX_CLIENTS_TRACKED]; // Array to save MACs of known CLIENTs
int probes_known_count = 0;
clientinfo clients_known[MAX_CLIENTS_TRACKED]; // Array to save MACs of known CLIENTs
int clients_known_count = 0; // Number of known CLIENTs
unsigned int channel = 1;
unsigned long previousMillis = 0;
unsigned long intmult = interval / 14;
unsigned long currentMillis;
#ifdef WIFI_QUICK
// Quick reconnect code
struct {
uint8_t channel;
uint8_t ap_mac[6];
String ssid;
String psk;
} wifiData;
#endif
#ifdef WIFIMANAGER
//flag for saving data
bool shouldSaveConfig = false;
#endif
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
#ifdef WIFIMANAGER
//read configuration from FS json
DPRINTLN("mounting FS...");
if (SPIFFS.begin()) {
DPRINTLN("mounted file system");
if (SPIFFS.exists("/config.json")) {
//file exists, reading and loading
DPRINTLN("reading config file");
File configFile = SPIFFS.open("/config.json", "r");
if (configFile) {
DPRINTLN("opened config file");
size_t size = configFile.size();
// Allocate a buffer to store contents of the file.
std::unique_ptr<char[]> buf(new char[size]);
configFile.readBytes(buf.get(), size);
DynamicJsonBuffer jsonBuffer;
JsonObject& json = jsonBuffer.parseObject(buf.get());
json.printTo(Serial);
if (json.success()) {
DPRINTLN("\nparsed json");
find_server = json["find_server"].asString();
find_group = json["find_group"].asString();
} else {
DPRINTLN("failed to load json config");
}
configFile.close();
}
}
} else {
DPRINTLN("failed to mount FS");
}
WiFiManagerParameter custom_find_server("server", "find server", find_server.c_str(), 40);
WiFiManagerParameter custom_find_group("group", "find group", find_group.c_str(), 40);
WiFiManager wifiManager;
wifiManager.setSaveConfigCallback(saveConfigCallback);
wifiManager.addParameter(&custom_find_server);
wifiManager.addParameter(&custom_find_group);
wifiManager.autoConnect();
find_server = custom_find_server.getValue();
find_group = custom_find_group.getValue();
//save the custom parameters to FS
if (shouldSaveConfig) {
DPRINTLN("saving config");
DynamicJsonBuffer jsonBuffer;
JsonObject& json = jsonBuffer.createObject();
json["find_server"] = find_server;
json["find_group"] = find_group;
File configFile = SPIFFS.open("/config.json", "w");
if (!configFile) {
DPRINTLN("failed to open config file for writing");
}
#ifdef DEBUG
json.printTo(Serial);
#endif
json.printTo(configFile);
configFile.close();
//end save
}
#else
WiFi.mode(WIFI_STA);
WiFi.begin(WIFI_SSID, WIFI_PSK);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
DPRINT(".");
}
DPRINTLN("");
DPRINTLN("WiFi connected");
DPRINTLN(WiFi.localIP());
#endif
#ifdef WIFI_QUICK
wifiData.ssid = WiFi.SSID();
wifiData.psk = WiFi.psk();
wifiData.channel = WiFi.channel();
memcpy(wifiData.ap_mac, WiFi.BSSID(), 6 );
#endif
wifi_set_opmode(STATION_MODE); // Promiscuous works only with station mode
wifi_set_channel(channel);
wifi_promiscuous_enable(disable);
wifi_set_promiscuous_rx_cb(promisc_cb); // Set up promiscuous callback
enableWifiMonitorMode();
}
void loop() {
currentMillis = millis();
if (currentMillis - previousMillis >= interval) {
if (clients_known_count >= MIN_CLIENTS_SEND) {
wifi_promiscuous_enable(disable);
enableWifiClient();
enableWifiMonitorMode();
DPRINT("Free heap: ");
DPRINTLN(ESP.getFreeHeap());
DPRINT("Heap framentation: ");
DPRINTLN(ESP.getHeapFragmentation());
} else {
DPRINTLN("Haven't found enough clients to send, continuing monitor mode.");
}
previousMillis = millis();
} else {
channel = 1;
while (true) {
nothing_new++; // Array is not finite, check bounds and adjust if required
if (nothing_new > 200) {
nothing_new = 0;
channel++;
if (channel == 15) break; // Only scan channels 1 to 14
wifi_set_channel(channel);
}
delay(1); // critical processing timeslice for NONOS SDK! No delay(0) yield()
}
}
}
#ifdef WIFIMANAGER
//callback notifying us of the need to save config
void saveConfigCallback () {
DPRINTLN("Should save config");
shouldSaveConfig = true;
}
#endif
void enableWifiMonitorMode()
{
// Send ESP into promiscuous mode. At this point, it stops being able to connect to the internet
DPRINTLN("Turning on wifi monitoring.");
wifi_set_opmode(STATION_MODE); // Promiscuous works only with station mode
wifi_set_channel(channel);
wifi_promiscuous_enable(enable);
}
void enableWifiClient()
{
// Send ESP into promiscuous mode. At this point, it stops being able to connect to the internet
DPRINTLN("Turning off wifi monitoring.");
wifi_promiscuous_enable(false);
WiFi.mode(WIFI_STA);
#ifdef WIFI_QUICK
WiFi.persistent(false);
WiFi.begin(wifiData.ssid.c_str(), wifiData.psk.c_str(), wifiData.channel, wifiData.ap_mac, true);
WiFi.persistent(true);
#else
WiFi.begin();
#endif
while (WiFi.status() != WL_CONNECTED) {
delay(500);
DPRINT(".");
}
DPRINTLN("");
DPRINTLN("WiFi connected");
DPRINTLN(WiFi.localIP());
#ifdef FIND_VERSION
FindPassive findPassive = FindPassive(find_server, find_group, FIND_VERSION);
#else
FindPassive findPassive = FindPassive(find_server, find_group);
#endif
for (int u = 0; u < clients_known_count; u++) {
findPassive.AddWifiSignal(mac2String(clients_known[u].station), clients_known[u].rssi);
}
HTTPRes hres = findPassive.sendData();
DPRINT("POST response code: ");
DPRINTLN(hres.rCode);
clearSniffData();
}
void clearSniffData() {
memset(aps_known, 0, MAX_APS_TRACKED);
aps_known_count = 0;
memset(clients_known, 0, MAX_CLIENTS_TRACKED);
clients_known_count = 0;
memset(probes_known, 0, MAX_CLIENTS_TRACKED);
probes_known_count = 0;
}
String mac2String(uint8_t mac[]) {
static char macAddr[18];
if (mac == NULL) return "";
snprintf(macAddr, sizeof(macAddr), "%02X:%02X:%02X:%02X:%02X:%02X",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
return String(macAddr);
}