Following tve's guidelines to submit the changes for query-ip, I think.

cmd/cmd.h

@@ -42,11 +42,14 @@ typedef enum {
   CMD_CB_ADD,
   CMD_CB_EVENTS,
   CMD_GET_TIME,       // get current time in seconds since the unix epoch
+  CMD_GET_WIFI_INFO,	// query ip address info
+  CMD_SET_WIFI_INFO,	// set ip address info
 
   CMD_MQTT_SETUP = 10,  // set-up callbacks
   CMD_MQTT_PUBLISH,     // publish a message
   CMD_MQTT_SUBSCRIBE,   // subscribe to a topic
   CMD_MQTT_LWT,         // set the last-will-topic and messge
+  CMD_MQTT_GET_CLIENTID,
 
   CMD_REST_SETUP = 20,  // set-up callbacks
   CMD_REST_REQUEST,     // do REST request
@@ -58,6 +61,13 @@ typedef enum {
   CMD_SOCKET_SETUP = 40, // set-up callbacks
   CMD_SOCKET_SEND,       // send data over UDP socket
 
+  CMD_WIFI_GET_APCOUNT = 50,    /* */
+  CMD_WIFI_GET_APNAME,
+  CMD_WIFI_SELECT_SSID,
+  CMD_WIFI_SIGNAL_STRENGTH,	// Query RSSI
+  CMD_WIFI_GET_SSID,		// Query SSID currently connected to
+  CMD_WIFI_START_SCAN,		// Trigger a scan (takes a long time)
+
 } CmdName;
 
 typedef void (*cmdfunc_t)(CmdPacket *cmd);

cmd/handlers.c

@@ -17,6 +17,7 @@
 #ifdef SOCKET
 #include <socket.h>
 #endif
+#include <ip_addr.h>
 
 #ifdef CMD_DBG
 #define DBG(format, ...) do { os_printf(format, ## __VA_ARGS__); } while(0)
@@ -28,8 +29,17 @@ static void cmdNull(CmdPacket *cmd);
 static void cmdSync(CmdPacket *cmd);
 static void cmdWifiStatus(CmdPacket *cmd);
 static void cmdGetTime(CmdPacket *cmd);
+static void cmdGetWifiInfo(CmdPacket *cmd);
+static void cmdSetWifiInfo(CmdPacket *cmd);
 static void cmdAddCallback(CmdPacket *cmd);
 
+static void cmdWifiGetApCount(CmdPacket *cmd);
+static void cmdWifiGetApName(CmdPacket *cmd);
+static void cmdWifiSelectSSID(CmdPacket *cmd);
+static void cmdWifiSignalStrength(CmdPacket *cmd);
+
+void cmdMqttGetClientId(CmdPacket *cmd);
+
 // keep track of last status sent to uC so we can notify it when it changes
 static uint8_t lastWifiStatus = wifiIsDisconnected;
 // keep track of whether we have registered our cb handler with the wifi subsystem
@@ -44,11 +54,22 @@ const CmdList commands[] = {
   {CMD_WIFI_STATUS,     "WIFI_STATUS",    cmdWifiStatus},
   {CMD_CB_ADD,          "ADD_CB",         cmdAddCallback},
   {CMD_GET_TIME,        "GET_TIME",       cmdGetTime},
+  {CMD_GET_WIFI_INFO,   "GET_WIFI_INFO",  cmdGetWifiInfo},
+  {CMD_SET_WIFI_INFO,   "SET_WIFI_INFO",  cmdSetWifiInfo},
+
+  {CMD_WIFI_GET_APCOUNT,	"WIFI_GET_APCOUNT",	cmdWifiGetApCount},
+  {CMD_WIFI_GET_APNAME,		"WIFI_GET_APNAME",	cmdWifiGetApName},
+  {CMD_WIFI_SELECT_SSID,	"WIFI_SELECT_SSID",	cmdWifiSelectSSID},
+  {CMD_WIFI_SIGNAL_STRENGTH,	"WIFI_SIGNAL_STRENGTH",	cmdWifiSignalStrength},
+  {CMD_WIFI_GET_SSID,		"WIFI_GET_SSID",	cmdWifiQuerySSID},
+  {CMD_WIFI_START_SCAN,		"WIFI_START_SCAN",	cmdWifiStartScan},
+
 #ifdef MQTT
   {CMD_MQTT_SETUP,      "MQTT_SETUP",     MQTTCMD_Setup},
   {CMD_MQTT_PUBLISH,    "MQTT_PUB",       MQTTCMD_Publish},
   {CMD_MQTT_SUBSCRIBE , "MQTT_SUB",       MQTTCMD_Subscribe},
   {CMD_MQTT_LWT,        "MQTT_LWT",       MQTTCMD_Lwt},
+  {CMD_MQTT_GET_CLIENTID,"MQTT_CLIENTID", cmdMqttGetClientId},
 #endif
 #ifdef REST
   {CMD_REST_SETUP,      "REST_SETUP",     REST_Setup},
@@ -178,6 +199,33 @@ cmdGetTime(CmdPacket *cmd) {
   return;
 }
 
+// Command handler for IP information
+static void ICACHE_FLASH_ATTR
+cmdGetWifiInfo(CmdPacket *cmd) {
+  CmdRequest req;
+
+  cmdRequest(&req, cmd);
+  if(cmd->argc != 0 || cmd->value == 0) {
+    cmdResponseStart(CMD_RESP_V, 0, 0);
+    cmdResponseEnd();
+    return;
+  }
+
+  uint32_t callback = req.cmd->value;
+
+  struct ip_info info;
+  wifi_get_ip_info(0, &info);
+  uint8_t mac[6];
+  wifi_get_macaddr(0, mac);
+
+  cmdResponseStart(CMD_RESP_CB, callback, 4);
+  cmdResponseBody(&info.ip.addr, sizeof(info.ip.addr));
+  cmdResponseBody(&info.netmask.addr, sizeof(info.netmask.addr));
+  cmdResponseBody(&info.gw.addr, sizeof(info.gw.addr));
+  cmdResponseBody(mac, sizeof(mac));
+  cmdResponseEnd();
+}
+
 // Command handler to add a callback to the named-callbacks list, this is for a callback to the uC
 static void ICACHE_FLASH_ATTR
 cmdAddCallback(CmdPacket *cmd) {
@@ -197,3 +245,114 @@ cmdAddCallback(CmdPacket *cmd) {
 
   cmdAddCb(name, cmd->value); // save the sensor callback
 }
+
+// Query the number of wifi access points
+static void ICACHE_FLASH_ATTR cmdWifiGetApCount(CmdPacket *cmd) {
+  int n = wifiGetApCount();
+  os_printf("WifiGetApCount : %d\n", n);
+  cmdResponseStart(CMD_RESP_V, n, 0);
+  cmdResponseEnd();
+}
+
+// Query the name of a wifi access point
+static void ICACHE_FLASH_ATTR cmdWifiGetApName(CmdPacket *cmd) {
+  CmdRequest req;
+
+  cmdRequest(&req, cmd);
+
+  int argc = cmdGetArgc(&req);
+  os_printf("cmdWifiGetApName: argc %d\n", argc);
+  if (argc != 1)
+    return;
+
+  uint16_t i;
+  cmdPopArg(&req, (uint8_t*)&i, 2);
+
+  uint32_t callback = req.cmd->value;
+
+  char myssid[33];
+  wifiGetApName(i, myssid);
+  myssid[32] = '\0';
+  os_printf("wifiGetApName(%d) -> {%s}\n", i, myssid);
+
+  cmdResponseStart(CMD_RESP_CB, callback, 1);
+  cmdResponseBody(myssid, strlen(myssid)+1);
+  cmdResponseEnd();
+}
+
+/*
+ * Select a wireless network.
+ * This can be called in two ways :
+ * - with a pair of strings (SSID, password)
+ * - with a number and a string (index into network array, password)
+ */
+static void ICACHE_FLASH_ATTR cmdWifiSelectSSID(CmdPacket *cmd) {
+  CmdRequest req;
+  cmdRequest(&req, cmd);
+  int argc = cmdGetArgc(&req);
+  char *ssid, *pass;
+
+  if (argc != 2)
+    return;
+
+  int len = cmdArgLen(&req);
+  if (len == 1) {
+    // Assume this is the index
+    uint8_t ix;
+    cmdPopArg(&req, &ix, 1);
+    len = cmdArgLen(&req);
+    pass = (char *)os_malloc(len+2);
+    cmdPopArg(&req, pass, len);
+    pass[len] = 0;
+
+    os_printf("SelectSSID(%d,%s)", ix, pass);
+
+    char myssid[33];
+    wifiGetApName(ix, myssid);
+    myssid[32] = '\0';
+    connectToNetwork(myssid, pass);
+  } else {
+    ssid = os_malloc(len+2);
+    cmdPopArg(&req, ssid, len);
+    ssid[len] = 0;
+
+    len = cmdArgLen(&req);
+    pass = (char *)os_malloc(len+2);
+    cmdPopArg(&req, pass, len);
+    pass[len] = 0;
+
+    os_printf("SelectSSID(%s,%s)", ssid, pass);
+    connectToNetwork(ssid, pass);
+  }
+}
+
+/*
+ * Once we're attached to some wireless network, choose not to pick up address from
+ * DHCP or so but set our own.
+ */
+static void ICACHE_FLASH_ATTR cmdSetWifiInfo(CmdPacket *cmd) {
+  os_printf("SetWifiInfo()\n");
+}
+
+static void ICACHE_FLASH_ATTR cmdWifiSignalStrength(CmdPacket *cmd) {
+  CmdRequest req;
+
+  cmdRequest(&req, cmd);
+
+  int argc = cmdGetArgc(&req);
+  if (argc != 1) {
+    os_printf("cmdWifiSignalStrength: argc %d\n", argc);
+    return;
+  }
+
+  char x;
+  cmdPopArg(&req, (uint8_t*)&x, 1);
+  int i = x;
+  os_printf("cmdWifiSignalStrength: argc %d, ", argc);
+  os_printf("i %d\n", i);
+
+  int rssi = wifiSignalStrength(i);
+
+  cmdResponseStart(CMD_RESP_V, rssi, 0);
+  cmdResponseEnd();
+}

esp-link/cgiwifi.c

@@ -226,6 +226,7 @@ static void ICACHE_FLASH_ATTR scanStartCb(void *arg) {
   wifi_station_scan(NULL, wifiScanDoneCb);
 }
 
+// Start scanning, web interface
 static int ICACHE_FLASH_ATTR cgiWiFiStartScan(HttpdConnData *connData) {
   if (connData->conn==NULL) return HTTPD_CGI_DONE; // Connection aborted. Clean up.
   jsonHeader(connData, 200);
@@ -238,6 +239,16 @@ static int ICACHE_FLASH_ATTR cgiWiFiStartScan(HttpdConnData *connData) {
   return HTTPD_CGI_DONE;
 }
 
+// Start scanning, API interface
+void ICACHE_FLASH_ATTR cmdWifiStartScan(CmdPacket *cmd) {
+  if (!cgiWifiAps.scanInProgress) {
+    cgiWifiAps.scanInProgress = 1;
+    os_timer_disarm(&scanTimer);
+    os_timer_setfn(&scanTimer, scanStartCb, NULL);
+    os_timer_arm(&scanTimer, 200, 0);
+  }
+}
+
 static int ICACHE_FLASH_ATTR cgiWiFiGetScan(HttpdConnData *connData) {
   if (connData->conn==NULL) return HTTPD_CGI_DONE; // Connection aborted. Clean up.
   char buff[1460];
@@ -361,6 +372,18 @@ static void ICACHE_FLASH_ATTR reassTimerCb(void *arg) {
   os_timer_arm(&resetTimer, 4*RESET_TIMEOUT, 0);
 }
 
+// Kick off connection to some network
+void ICACHE_FLASH_ATTR connectToNetwork(char *ssid, char *pass) {
+  os_strncpy((char*)stconf.ssid, ssid, 32);
+  os_strncpy((char*)stconf.password, pass, 64);
+  DBG("Wifi try to connect to AP %s pw %s\n", ssid, pass);
+
+  // Schedule disconnect/connect
+  os_timer_disarm(&reassTimer);
+  os_timer_setfn(&reassTimer, reassTimerCb, NULL);
+  os_timer_arm(&reassTimer, 1000, 0); // 1 second for the response of this request to make it
+}
+
 // This cgi uses the routines above to connect to a specific access point with the
 // given ESSID using the given password.
 int ICACHE_FLASH_ATTR cgiWiFiConnect(HttpdConnData *connData) {
@@ -380,14 +403,8 @@ int ICACHE_FLASH_ATTR cgiWiFiConnect(HttpdConnData *connData) {
 
   if (el > 0 && pl >= 0) {
     //Set to 0 if you want to disable the actual reconnecting bit
-    os_strncpy((char*)stconf.ssid, essid, 32);
-    os_strncpy((char*)stconf.password, passwd, 64);
-    DBG("Wifi try to connect to AP %s pw %s\n", essid, passwd);
-
-    //Schedule disconnect/connect
-    os_timer_disarm(&reassTimer);
-    os_timer_setfn(&reassTimer, reassTimerCb, NULL);
-    os_timer_arm(&reassTimer, 1000, 0); // 1 second for the response of this request to make it
+
+    connectToNetwork(essid, passwd);
     jsonHeader(connData, 200);
   } else {
     jsonHeader(connData, 400);
@@ -945,3 +962,58 @@ void ICACHE_FLASH_ATTR wifiInit() {
     os_timer_setfn(&resetTimer, resetTimerCb, NULL);
     os_timer_arm(&resetTimer, RESET_TIMEOUT, 0);
 }
+
+// Access functions for cgiWifiAps
+int ICACHE_FLASH_ATTR wifiGetApCount() {
+  if (cgiWifiAps.scanInProgress)
+    return 0;
+  return cgiWifiAps.noAps;
+}
+
+ICACHE_FLASH_ATTR void wifiGetApName(int i, char *ptr) {
+  if (i < 0)
+    return;
+  if (i >= cgiWifiAps.noAps)
+    return;
+
+  if (ptr != 0)
+    strncpy(ptr, cgiWifiAps.apData[i]->ssid, 32);
+
+  os_printf("AP %s\n", cgiWifiAps.apData[i]->ssid);
+}
+
+// This may not belong here : called from cmd/handlers.c
+// But it's good to have similar functionality close to each other.
+// This performs functions similar to cgiWiFiConnect()
+int ICACHE_FLASH_ATTR wifiConnect(char *ssid, char *pass) {
+// Danny
+  return 0;
+}
+
+ICACHE_FLASH_ATTR int wifiSignalStrength(int i) { 
+  sint8 rssi;
+
+  if (i < 0)
+    rssi = wifi_station_get_rssi();	// Current network's signal strength
+  else if (i >= cgiWifiAps.noAps)
+    rssi = 0;				// FIX ME
+  else
+    rssi = cgiWifiAps.apData[i]->rssi;	// Signal strength of any known network
+
+  return rssi;
+}
+
+void ICACHE_FLASH_ATTR cmdWifiQuerySSID(CmdPacket *cmd) {
+  CmdRequest req;
+  cmdRequest(&req, cmd);
+  uint32_t callback = req.cmd->value;
+
+  struct station_config conf;
+  bool res = wifi_station_get_config(&conf);
+
+  os_printf("QuerySSID : %s\n", conf.ssid);
+
+  cmdResponseStart(CMD_RESP_CB, callback, 1);
+  cmdResponseBody(conf.ssid, strlen((char *)conf.ssid)+1);
+  cmdResponseEnd();
+}

esp-link/cgiwifi.h

@@ -24,4 +24,11 @@ int checkString(char *str);
 extern uint8_t wifiState;
 extern bool mdns_started;
 
+int wifiGetApCount();
+void wifiGetApName(int, char *);
+int wifiSignalStrength(int);
+void connectToNetwork(char *, char *);
+void cmdWifiQuerySSID(CmdPacket *cmd);
+void cmdWifiStartScan(CmdPacket *cmd);
+
 #endif

esp-link/mqtt_client.c

@@ -114,4 +114,23 @@ mqtt_client_on_data(MqttDataCallback dataCb) {
   data_cb = dataCb;
 }
 
+// Command handler for MQTT information
+void ICACHE_FLASH_ATTR cmdMqttGetClientId(CmdPacket *cmd) {
+  CmdRequest req;
+
+  cmdRequest(&req, cmd);
+  if(cmd->argc != 0 || cmd->value == 0) {
+    cmdResponseStart(CMD_RESP_V, 0, 0);
+    cmdResponseEnd();
+    return;
+  }
+
+  uint32_t callback = req.cmd->value;
+
+  cmdResponseStart(CMD_RESP_CB, callback, 1);
+  cmdResponseBody(flashConfig.mqtt_clientid, strlen(flashConfig.mqtt_clientid)+1);
+  cmdResponseEnd();
+
+  os_printf("MqttGetClientId : %s\n", flashConfig.mqtt_clientid);
+}
 #endif // MQTT