anna/gpio-webhook-arduino
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Numerous fixes, first working commit.

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This commit is contained in:
Anna Rose Wiggins 2020-05-14 18:26:02 +00:00
parent 3569508c88
commit e74fe369e5
3 changed files with 125 additions and 76 deletions
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79
wifi.h
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@ -1,17 +1,39 @@
#include "config.h"
#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>
//#include <WifiClientSecureBearSSL.h>
#include <bearssl.h>
#include <FS.h>
#include <WiFiClientSecureBearSSL.h>
HTTPClient client;
BearSSL::WifiClientSecure *transport;
BearSSL::WiFiClientSecure *secure_transport;
BearSSL::Session *tls_session;
BearSSL::X509List cert_list;
void init_wifi() {
transport = new WifiClientSecure();
void syncTime() {
// sync time
Serial.print("Syncing time");
configTime(8 * 3600, 0, "pool.ntp.org", "time.nist.gov");
time_t now = time(nullptr);
while (now < 8 * 3600 * 2) {
delay(500);
Serial.print(".");
now = time(nullptr);
}
Serial.println("");
}
Serial.println("Attempting to (re)connect to wifi");
void initTLS() {
secure_transport = new BearSSL::WiFiClientSecure();
syncTime();
cert_list.append(ca_cert);
secure_transport->setTrustAnchors(&cert_list);
tls_session = new BearSSL::Session();
secure_transport->setSession(tls_session);
}
void InitWifi() {
Serial.println("Attempting to connect to wifi");
WiFi.disconnect();
WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
int elapsed = 0;
@ -25,36 +47,23 @@ void init_wifi() {
Serial.println("Wifi connected");
sync_time();
load_ca_cert();
initTLS();
}
void load_ca_cert() {
// read cert from file
if (!SPIFFS.begin()) {
Serial.println("Failed to mount file system.");
return
String FetchURL(const char *path) {
client.begin(*secure_transport, WEBHOOK_URL);
int status = client.GET();
if (status < 0) {
Serial.print("Client error communicating with server: ");
Serial.println(status);
return "";
}
if (status >= 400) {
Serial.print("Received HTTP status code ");
Serial.println(status);
return "";
}
File cert = SPIFFS.open("/ca_cert.pem", "r");
if (!cert) {
Serial.println("Couldn't open cert file.");
return;
}
cert_list.append(strdup(cert.readString().c_str()));
netClient->setTrustAnchors(&certList);
}
void sync_time() {
// sync time
Serial.print("Syncing time");
configTime(8 * 3600, 0, "pool.ntp.org", "time.nist.gov");
time_t now = time(nullptr);
while (now < 8 * 3600 * 2) {
delay(500);
Serial.print(".");
now = time(nullptr);
}
Serial.println("");
return client.getString();
}