103 lines
3 KiB
C
103 lines
3 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <sdkconfig.h>
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#include <freertos/FreeRTOS.h>
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#include <freertos/task.h>
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#include <freertos/queue.h>
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#include <esp_system.h>
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#include <esp_err.h>
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#include <esp_log.h>
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#include <nvs_flash.h>
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#include <nvs.h>
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#include "pax_gfx.h"
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#include "wifi_connection.h"
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static const char *TAG = "wifi_connect";
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bool wifi_connect_to_stored() {
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bool result = false;
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// Open NVS.
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nvs_handle_t handle;
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nvs_open("system", NVS_READWRITE, &handle);
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wifi_auth_mode_t authmode = 0;
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esp_eap_ttls_phase2_types phase2 = 0;
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char *ssid = NULL;
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char *ident = NULL;
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char *anon_ident = NULL;
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char *password = NULL;
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size_t len;
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// Read NVS.
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esp_err_t res;
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// Read SSID.
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res = nvs_get_str(handle, "wifi.ssid", NULL, &len);
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if (res) goto errcheck;
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ssid = malloc(len);
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res = nvs_get_str(handle, "wifi.ssid", ssid, &len);
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if (res) goto errcheck;
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// Check whether connection is enterprise.
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res = nvs_get_u8(handle, "wifi.authmode", &authmode);
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bool use_ent = authmode == WIFI_AUTH_WPA2_ENTERPRISE;
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if (res) goto errcheck;
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if (use_ent) {
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// Read enterprise-specific parameters.
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// Read phase2 mode.
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res = nvs_get_u8(handle, "wifi.phase2", &phase2);
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if (res) goto errcheck;
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// Read identity.
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res = nvs_get_str(handle, "wifi.username", NULL, &len);
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if (res) goto errcheck;
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ident = malloc(len);
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res = nvs_get_str(handle, "wifi.username", ident, &len);
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// Read anonymous identity.
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res = nvs_get_str(handle, "wifi.anon_ident", NULL, &len);
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if (res == ESP_ERR_NVS_NOT_FOUND) {
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// Default is use the same thing.
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anon_ident = strdup(ident);
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} else {
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if (res) goto errcheck;
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anon_ident = malloc(len);
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res = nvs_get_str(handle, "wifi.anon_ident", anon_ident, &len);
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if (res) goto errcheck;
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}
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}
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// Read password.
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res = nvs_get_str(handle, "wifi.password", NULL, &len);
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if (res) goto errcheck;
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password = malloc(len);
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res = nvs_get_str(handle, "wifi.password", password, &len);
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if (res) goto errcheck;
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// Close NVS.
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nvs_close(handle);
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// Open the appropriate connection.
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if (use_ent) {
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result = wifi_connect_ent(ssid, ident, anon_ident, password, phase2, 3);
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} else {
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result = wifi_connect(ssid, password, authmode, 3);
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}
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errcheck:
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if (res == ESP_ERR_NVS_NOT_FOUND || res == ESP_ERR_NVS_NOT_INITIALIZED) {
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// When NVS is not initialised.
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ESP_LOGI(TAG, "WiFi settings not stored in NVS.");
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} else if (res) {
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// Other errors.
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ESP_LOGE(TAG, "Error connecting to WiFi: %s", esp_err_to_name(res));
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}
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// Free memory.
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if (ssid) free(ssid);
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if (ident) free(ident);
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if (anon_ident) free(anon_ident);
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if (password) free(password);
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return result;
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}
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