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625 lines
16 KiB
625 lines
16 KiB
/*
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Cgi/template routines for the /wifi url.
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*/
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/*
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* Jeroen Domburg <jeroen@spritesmods.com> wrote this file. As long as you retain
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* this notice you can do whatever you want with this stuff. If we meet some day,
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* and you think this stuff is worth it, you can buy me a beer in return.
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* ----------------------------------------------------------------------------
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*
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* File adapted and improved by Ondřej Hruška <ondra@ondrovo.com>
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*/
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#include <esp8266.h>
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#include <httpdespfs.h>
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#include "cgi_wifi.h"
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#include "wifimgr.h"
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#include "persist.h"
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#include "helpers.h"
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#define SET_REDIR_SUC "/cfg/wifi"
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#define SET_REDIR_ERR SET_REDIR_SUC"?err="
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/** WiFi access point data */
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typedef struct {
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char ssid[32];
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char bssid[8];
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int channel;
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char rssi;
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char enc;
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} ApData;
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/** Scan result type */
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typedef struct {
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char scanInProgress; //if 1, don't access the underlying stuff from the webpage.
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ApData **apData;
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int noAps;
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} ScanResultData;
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/** Static scan status storage. */
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static ScanResultData cgiWifiAps;
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/** Connection to AP periodic check timer */
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static os_timer_t staCheckTimer;
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/**
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* Calculate approximate signal strength % from RSSI
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*/
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int ICACHE_FLASH_ATTR rssi2perc(int rssi)
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{
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int r;
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if (rssi > 200)
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r = 100;
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else if (rssi < 100)
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r = 0;
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else
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r = 100 - 2 * (200 - rssi); // approx.
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if (r > 100) r = 100;
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if (r < 0) r = 0;
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return r;
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}
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/**
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* Convert Auth type to string
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*/
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const ICACHE_FLASH_ATTR char *auth2str(AUTH_MODE auth)
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{
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switch (auth) {
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case AUTH_OPEN:
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return "Open";
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case AUTH_WEP:
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return "WEP";
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case AUTH_WPA_PSK:
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return "WPA";
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case AUTH_WPA2_PSK:
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return "WPA2";
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case AUTH_WPA_WPA2_PSK:
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return "WPA/WPA2";
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default:
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return "Unknown";
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}
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}
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/**
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* Convert WiFi opmode to string
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*/
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const ICACHE_FLASH_ATTR char *opmode2str(WIFI_MODE opmode)
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{
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switch (opmode) {
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case NULL_MODE:
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return "Disabled";
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case STATION_MODE:
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return "Client";
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case SOFTAP_MODE:
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return "AP only";
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case STATIONAP_MODE:
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return "Client+AP";
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default:
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return "Unknown";
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}
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}
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/**
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* Callback the code calls when a wlan ap scan is done. Basically stores the result in
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* the static cgiWifiAps struct.
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*
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* @param arg - a pointer to {struct bss_info}, which is a linked list of the found APs
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* @param status - OK if the scan succeeded
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*/
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void ICACHE_FLASH_ATTR wifiScanDoneCb(void *arg, STATUS status)
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{
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int n;
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struct bss_info *bss_link = (struct bss_info *) arg;
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dbg("wifiScanDoneCb %d", status);
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if (status != OK) {
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cgiWifiAps.scanInProgress = 0;
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return;
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}
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// Clear prev ap data if needed.
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if (cgiWifiAps.apData != NULL) {
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for (n = 0; n < cgiWifiAps.noAps; n++) free(cgiWifiAps.apData[n]);
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free(cgiWifiAps.apData);
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}
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// Count amount of access points found.
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n = 0;
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while (bss_link != NULL) {
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bss_link = bss_link->next.stqe_next;
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n++;
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}
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// Allocate memory for access point data
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cgiWifiAps.apData = (ApData **) malloc(sizeof(ApData *) * n);
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if (cgiWifiAps.apData == NULL) {
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error("Out of memory allocating apData");
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return;
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}
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cgiWifiAps.noAps = n;
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info("Scan done: found %d APs", n);
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// Copy access point data to the static struct
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n = 0;
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bss_link = (struct bss_info *) arg;
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while (bss_link != NULL) {
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if (n >= cgiWifiAps.noAps) {
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// This means the bss_link changed under our nose. Shouldn't happen!
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// Break because otherwise we will write in unallocated memory.
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error("Huh? I have more than the allocated %d aps!", cgiWifiAps.noAps);
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break;
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}
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// Save the ap data.
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cgiWifiAps.apData[n] = (ApData *) malloc(sizeof(ApData));
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if (cgiWifiAps.apData[n] == NULL) {
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error("Can't allocate mem for ap buff.");
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cgiWifiAps.scanInProgress = 0;
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return;
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}
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cgiWifiAps.apData[n]->rssi = bss_link->rssi;
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cgiWifiAps.apData[n]->channel = bss_link->channel;
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cgiWifiAps.apData[n]->enc = bss_link->authmode;
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strncpy(cgiWifiAps.apData[n]->ssid, (char *) bss_link->ssid, 32);
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strncpy(cgiWifiAps.apData[n]->bssid, (char *) bss_link->bssid, 6);
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bss_link = bss_link->next.stqe_next;
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n++;
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}
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// We're done.
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cgiWifiAps.scanInProgress = 0;
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}
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/**
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* Routine to start a WiFi access point scan.
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*/
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static void ICACHE_FLASH_ATTR wifiStartScan(void)
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{
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if (cgiWifiAps.scanInProgress) return;
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cgiWifiAps.scanInProgress = 1;
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wifi_station_scan(NULL, wifiScanDoneCb);
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}
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/**
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* Start a scan and return a result of an earlier scan, if available.
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* The STA is switched ON if disabled.
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*/
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httpd_cgi_state ICACHE_FLASH_ATTR cgiWiFiScan(HttpdConnData *connData)
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{
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int pos = (int) connData->cgiData;
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int len;
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char buff[256];
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if (connData->conn == NULL) {
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//Connection aborted. Clean up.
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return HTTPD_CGI_DONE;
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}
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// auto-turn on STA
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if ((wificonf->opmode & STATION_MODE) == 0) {
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wificonf->opmode |= STATION_MODE;
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wifimgr_apply_settings();
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}
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// 2nd and following runs of the function via MORE:
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if (!cgiWifiAps.scanInProgress && pos != 0) {
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// Fill in json code for an access point
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if (pos - 1 < cgiWifiAps.noAps) {
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int rssi = cgiWifiAps.apData[pos - 1]->rssi;
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len = sprintf(buff, "{\"essid\": \"%s\", \"bssid\": \""
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MACSTR
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"\", \"rssi\": %d, \"rssi_perc\": %d, \"enc\": %d, \"channel\": %d}%s",
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cgiWifiAps.apData[pos - 1]->ssid,
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MAC2STR(cgiWifiAps.apData[pos - 1]->bssid),
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rssi,
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rssi2perc(rssi),
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cgiWifiAps.apData[pos - 1]->enc,
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cgiWifiAps.apData[pos - 1]->channel,
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(pos - 1 == cgiWifiAps.noAps - 1) ? "\n " : ",\n "); //<-terminator
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httpdSend(connData, buff, len);
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}
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pos++;
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if ((pos - 1) >= cgiWifiAps.noAps) {
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len = sprintf(buff, " ]\n }\n}"); // terminate the whole object
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httpdSend(connData, buff, len);
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// Also start a new scan.
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wifiStartScan();
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return HTTPD_CGI_DONE;
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}
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else {
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connData->cgiData = (void *) pos;
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return HTTPD_CGI_MORE;
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}
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}
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// First run of the function
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httpdStartResponse(connData, 200);
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httpdHeader(connData, "Content-Type", "application/json");
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httpdEndHeaders(connData);
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if (cgiWifiAps.scanInProgress == 1) {
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// We're still scanning. Tell Javascript code that.
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len = sprintf(buff, "{\n \"result\": {\n \"inProgress\": 1\n }\n}");
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httpdSend(connData, buff, len);
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return HTTPD_CGI_DONE;
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}
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else {
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// We have a scan result. Pass it on.
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len = sprintf(buff, "{\n \"result\": {\n \"inProgress\": 0,\n \"APs\": [\n ");
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httpdSend(connData, buff, len);
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if (cgiWifiAps.apData == NULL) cgiWifiAps.noAps = 0;
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connData->cgiData = (void *) 1;
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return HTTPD_CGI_MORE;
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}
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}
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/**
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* Cgi to get connection status.
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*
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* This endpoint returns JSON with keys:
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* - status = 'idle', 'working' or 'fail',
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* - ip = IP address, after connection succeeds
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*/
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httpd_cgi_state ICACHE_FLASH_ATTR cgiWiFiConnStatus(HttpdConnData *connData)
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{
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char buff[100];
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struct ip_info info;
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buff[0] = 0; // avoid unitialized read
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if (connData->conn == NULL) {
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//Connection aborted. Clean up.
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return HTTPD_CGI_DONE;
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}
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httpdStartResponse(connData, 200);
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httpdHeader(connData, "Content-Type", "application/json");
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httpdEndHeaders(connData);
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// if bad opmode or no SSID configured, skip any checks
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if (!(wificonf->opmode & STATION_MODE) || wificonf->sta_ssid[0] == 0) {
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httpdSend(connData, "{\"status\": \"disabled\"}", -1);
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return HTTPD_CGI_DONE;
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}
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STATION_STATUS st = wifi_station_get_connect_status();
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dbg("CONN STATE = %d", st);
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switch(st) {
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case STATION_IDLE:
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sprintf(buff, "{\"status\": \"idle\"}"); // unclear when this is used
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break;
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case STATION_CONNECTING:
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sprintf(buff, "{\"status\": \"working\"}");
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break;
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case STATION_WRONG_PASSWORD:
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sprintf(buff, "{\"status\": \"fail\", \"cause\": \"WRONG_PASSWORD\"}");
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break;
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case STATION_NO_AP_FOUND:
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sprintf(buff, "{\"status\": \"fail\", \"cause\": \"AP_NOT_FOUND\"}");
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break;
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case STATION_CONNECT_FAIL:
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sprintf(buff, "{\"status\": \"fail\", \"cause\": \"CONNECTION_FAILED\"}");
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break;
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case STATION_GOT_IP:
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wifi_get_ip_info(STATION_IF, &info);
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sprintf(buff, "{\"status\": \"success\", \"ip\": \""IPSTR"\"}", GOOD_IP2STR(info.ip.addr));
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break;
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default:
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sprintf(buff, "{\"status\": \"working\", \"wtf\": \"state = %d\"}", st);
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break;
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}
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httpdSend(connData, buff, -1);
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return HTTPD_CGI_DONE;
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}
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/**
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* Callback for async timer
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*/
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static void ICACHE_FLASH_ATTR applyWifiSettingsLaterCb(void *arg)
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{
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(void*)arg;
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wifimgr_apply_settings();
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}
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/**
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* Universal CGI endpoint to set WiFi params.
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* Note that some may cause a (delayed) restart.
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*/
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httpd_cgi_state ICACHE_FLASH_ATTR cgiWiFiSetParams(HttpdConnData *connData)
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{
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static ETSTimer timer;
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char buff[50];
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char redir_url_buf[100]; // this is just barely enough - but it's split into two forms, so we never have error in all fields
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char *redir_url = redir_url_buf;
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redir_url += sprintf(redir_url, SET_REDIR_ERR);
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// we'll test if anything was printed by looking for \0 in failed_keys_buf
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if (connData->conn == NULL) {
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//Connection aborted. Clean up.
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return HTTPD_CGI_DONE;
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}
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bool sta_turned_on = false;
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bool sta_ssid_pw_changed = false;
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// ---- WiFi opmode ----
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if (GET_ARG("opmode")) {
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dbg("Setting WiFi opmode to: %s", buff);
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int mode = atoi(buff);
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if (mode > NULL_MODE && mode < MAX_MODE) {
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wificonf->opmode = (WIFI_MODE) mode;
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} else {
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warn("Bad opmode value \"%s\"", buff);
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redir_url += sprintf(redir_url, "opmode,");
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}
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}
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if (GET_ARG("ap_enable")) {
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dbg("Enable AP: %s", buff);
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int enable = atoi(buff);
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if (enable) {
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wificonf->opmode |= SOFTAP_MODE;
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} else {
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wificonf->opmode &= ~SOFTAP_MODE;
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}
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}
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if (GET_ARG("sta_enable")) {
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dbg("Enable STA: %s", buff);
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int enable = atoi(buff);
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if (enable) {
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wificonf->opmode |= STATION_MODE;
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sta_turned_on = true;
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} else {
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wificonf->opmode &= ~STATION_MODE;
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}
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}
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// ---- AP transmit power ----
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if (GET_ARG("tpw")) {
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dbg("Setting AP power to: %s", buff);
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int tpw = atoi(buff);
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if (tpw >= 0 && tpw <= 82) { // 0 actually isn't 0 but quite low. 82 is very strong
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if (wificonf->tpw != tpw) {
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wificonf->tpw = (u8) tpw;
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wifi_change_flags.ap = true;
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}
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} else {
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warn("tpw %s out of allowed range 0-82.", buff);
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redir_url += sprintf(redir_url, "tpw,");
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}
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}
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// ---- AP channel (applies in AP-only mode) ----
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if (GET_ARG("ap_channel")) {
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info("ap_channel = %s", buff);
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int channel = atoi(buff);
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if (channel > 0 && channel < 15) {
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if (wificonf->ap_channel != channel) {
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wificonf->ap_channel = (u8) channel;
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wifi_change_flags.ap = true;
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}
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} else {
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warn("Bad channel value \"%s\", allowed 1-14", buff);
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redir_url += sprintf(redir_url, "ap_channel,");
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}
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}
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// ---- SSID name in AP mode ----
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if (GET_ARG("ap_ssid")) {
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// Replace all invalid ASCII with underscores
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int i;
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for (i = 0; i < 32; i++) {
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char c = buff[i];
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if (c == 0) break;
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if (c < 32 || c >= 127) buff[i] = '_';
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}
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buff[i] = 0;
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if (strlen(buff) > 0) {
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if (!streq(wificonf->ap_ssid, buff)) {
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info("Setting SSID to \"%s\"", buff);
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strncpy_safe(wificonf->ap_ssid, buff, SSID_LEN);
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wifi_change_flags.ap = true;
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}
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} else {
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warn("Bad SSID len.");
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redir_url += sprintf(redir_url, "ap_ssid,");
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}
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}
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// ---- AP password ----
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if (GET_ARG("ap_password")) {
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// Users are free to use any stupid shit in ther password,
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// but it may lock them out.
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if (strlen(buff) == 0 || (strlen(buff) >= 8 && strlen(buff) < PASSWORD_LEN-1)) {
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if (!streq(wificonf->ap_password, buff)) {
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info("Setting AP password to \"%s\"", buff);
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strncpy_safe(wificonf->ap_password, buff, PASSWORD_LEN);
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wifi_change_flags.ap = true;
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}
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} else {
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warn("Bad password len.");
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redir_url += sprintf(redir_url, "ap_password,");
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}
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}
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// ---- Hide AP network (do not announce) ----
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if (GET_ARG("ap_hidden")) {
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dbg("AP hidden = %s", buff);
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int hidden = atoi(buff);
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if (hidden != wificonf->ap_hidden) {
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wificonf->ap_hidden = (hidden != 0);
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wifi_change_flags.ap = true;
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}
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}
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// ---- Station SSID (to connect to) ----
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if (GET_ARG("sta_ssid")) {
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if (!streq(wificonf->sta_ssid, buff)) {
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// No verification needed, at worst it fails to connect
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info("Setting station SSID to: \"%s\"", buff);
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strncpy_safe(wificonf->sta_ssid, buff, SSID_LEN);
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wifi_change_flags.sta = true;
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sta_ssid_pw_changed = true;
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}
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}
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// ---- Station password (empty for none is allowed) ----
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if (GET_ARG("sta_password")) {
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if (!streq(wificonf->sta_password, buff)) {
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// No verification needed, at worst it fails to connect
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info("Setting station password to: \"%s\"", buff);
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strncpy_safe(wificonf->sta_password, buff, PASSWORD_LEN);
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wifi_change_flags.sta = true;
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sta_ssid_pw_changed = true;
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}
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}
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if (redir_url_buf[strlen(SET_REDIR_ERR)] == 0) {
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// All was OK
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info("Set WiFi params - success, applying in 2000 ms");
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// Settings are applied only if all was OK
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//
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// This is so that options that consist of multiple keys sent together are not applied
|
|
// only partially if set wrong, which could lead to eg. user losing access and having
|
|
// to reset to defaults.
|
|
persist_store();
|
|
|
|
// Delayed settings apply, so the response page has a chance to load.
|
|
// If user connects via the Station IF, they may not even notice the connection reset.
|
|
os_timer_disarm(&timer);
|
|
os_timer_setfn(&timer, applyWifiSettingsLaterCb, NULL);
|
|
os_timer_arm(&timer, 2000, false);
|
|
|
|
if ((sta_ssid_pw_changed || sta_turned_on)
|
|
&& wificonf->opmode != SOFTAP_MODE
|
|
&& wificonf->sta_ssid[0] != 0) {
|
|
// User wants to connect
|
|
|
|
info("User wants to connect to SSID, redirecting to ConnStatus page.");
|
|
httpdRedirect(connData, "/cfg/wifi/connecting");
|
|
}
|
|
else {
|
|
httpdRedirect(connData, SET_REDIR_SUC);
|
|
}
|
|
} else {
|
|
warn("Some WiFi settings did not validate, asking for correction");
|
|
// Some errors, appended to the URL as ?err=
|
|
httpdRedirect(connData, redir_url_buf);
|
|
}
|
|
return HTTPD_CGI_DONE;
|
|
}
|
|
|
|
|
|
//Template code for the WLAN page.
|
|
httpd_cgi_state ICACHE_FLASH_ATTR tplWlan(HttpdConnData *connData, char *token, void **arg)
|
|
{
|
|
char buff[PASSWORD_LEN];
|
|
int x;
|
|
int connectStatus;
|
|
|
|
if (token == NULL) {
|
|
// We're done
|
|
return HTTPD_CGI_DONE;
|
|
}
|
|
|
|
strcpy(buff, ""); // fallback
|
|
|
|
if (streq(token, "opmode_name")) {
|
|
strcpy(buff, opmode2str(wificonf->opmode));
|
|
}
|
|
else if (streq(token, "opmode")) {
|
|
sprintf(buff, "%d", wificonf->opmode);
|
|
}
|
|
else if (streq(token, "sta_enable")) {
|
|
sprintf(buff, "%d", (wificonf->opmode & STATION_MODE) != 0);
|
|
}
|
|
else if (streq(token, "ap_enable")) {
|
|
sprintf(buff, "%d", (wificonf->opmode & SOFTAP_MODE) != 0);
|
|
}
|
|
else if (streq(token, "tpw")) {
|
|
sprintf(buff, "%d", wificonf->tpw);
|
|
}
|
|
else if (streq(token, "ap_channel")) {
|
|
sprintf(buff, "%d", wificonf->ap_channel);
|
|
}
|
|
else if (streq(token, "ap_ssid")) {
|
|
sprintf(buff, "%s", wificonf->ap_ssid);
|
|
}
|
|
else if (streq(token, "ap_password")) {
|
|
sprintf(buff, "%s", wificonf->ap_password);
|
|
}
|
|
else if (streq(token, "ap_hidden")) {
|
|
sprintf(buff, "%d", wificonf->ap_hidden);
|
|
}
|
|
else if (streq(token, "sta_ssid")) {
|
|
sprintf(buff, "%s", wificonf->sta_ssid);
|
|
}
|
|
else if (streq(token, "sta_password")) {
|
|
sprintf(buff, "%s", wificonf->sta_password);
|
|
}
|
|
else if (streq(token, "sta_rssi")) {
|
|
sprintf(buff, "%d", wifi_station_get_rssi());
|
|
}
|
|
else if (streq(token, "sta_active_ssid")) {
|
|
// For display of our current SSID
|
|
connectStatus = wifi_station_get_connect_status();
|
|
x = wifi_get_opmode();
|
|
if (x == SOFTAP_MODE || connectStatus != STATION_GOT_IP || wificonf->opmode == SOFTAP_MODE) {
|
|
strcpy(buff, "");
|
|
}
|
|
else {
|
|
struct station_config staconf;
|
|
wifi_station_get_config(&staconf);
|
|
strcpy(buff, (char *) staconf.ssid);
|
|
}
|
|
}
|
|
else if (streq(token, "sta_active_ip")) {
|
|
x = wifi_get_opmode();
|
|
connectStatus = wifi_station_get_connect_status();
|
|
|
|
if (x == SOFTAP_MODE || connectStatus != STATION_GOT_IP || wificonf->opmode == SOFTAP_MODE) {
|
|
strcpy(buff, "");
|
|
}
|
|
else {
|
|
struct ip_info info;
|
|
wifi_get_ip_info(STATION_IF, &info);
|
|
sprintf(buff, IPSTR, GOOD_IP2STR(info.ip.addr));
|
|
|
|
// sprintf(buff, "ip: "IPSTR", mask: "IPSTR", gw: "IPSTR,
|
|
// GOOD_IP2STR(info.ip.addr),
|
|
// GOOD_IP2STR(info.netmask.addr),
|
|
// GOOD_IP2STR(info.gw.addr));
|
|
}
|
|
}
|
|
|
|
tplSend(connData, buff, -1);
|
|
return HTTPD_CGI_DONE;
|
|
}
|
|
|