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PushNotifier.cpp
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PushNotifier.cpp
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#include "PushNotifier.h"
#include "cppcodec/cppcodec/base64_default_rfc4648.hpp"
#include <iostream>
using namespace std;
using json = nlohmann::json;
PushNotifier::PushNotifier() {
this->authorization = base64::encode((string) APP_PACKAGE + ":" + API_TOKEN);
curl_global_init(CURL_GLOBAL_DEFAULT);
}
PushNotifier::~PushNotifier() {
curl_global_cleanup();
}
PushNotifier::PushNotifier(string username, string appToken, time_t expires_at) {
this->username = username;
AppToken tok;
tok.token = appToken;
tok.expires_at = expires_at;
this->appToken = tok;
this->authorization = base64::encode((string) APP_PACKAGE + ":" + API_TOKEN);
curl_global_init(CURL_GLOBAL_DEFAULT);
}
PushNotifier::AppToken PushNotifier::login(string username, string password, bool apply) {
json j;
j["username"] = username;
j["password"] = password;
json buf = call(POST, URL_PN_LOGIN, NULL, j);
if(buf["status"] == "error") {
throw runtime_error(buf["message"].dump());
}
AppToken tok;
tok.token = buf["app_token"];
tok.expires_at = buf["expires_at"].get<time_t>();
if(apply) {
this->appToken = tok;
}
return tok;
}
vector<PushNotifier::Device>PushNotifier::getDevices() {
vector<Device> devices;
json j = call(GET, URL_PN_DEVICES, this->appToken.token.c_str(), "{}"_json);
if(!j.is_array() && j["status"] == "error") {
throw runtime_error(j["message"].dump());
}
for(auto d : j) {
Device buf;
buf.id = d["id"];
buf.image = d["image"];
buf.model = d["model"];
buf.title = d["title"];
devices.push_back(buf);
}
return devices;
}
PushNotifier::AppToken PushNotifier::refreshToken(bool apply) {
json j = call(GET, URL_PN_REFRESH, this->appToken.token.c_str(), "{}"_json);
if(j["status"] == "error") {
throw runtime_error(j["message"].dump());
}
AppToken tk;
tk.token = j["app_token"];
tk.expires_at = j["expires_at"].get<time_t>();
if(apply) {
this->appToken = tk;
}
return tk;
}
void PushNotifier::setApptoken(string appToken, time_t expires_at) {
this->appToken.token = appToken;
this->appToken.expires_at = expires_at;
}
string PushNotifier::getAppToken() {
if(this->appToken.isAboutToExpire()) {
refreshToken();
}
return this->appToken.token;
}
bool PushNotifier::sendMessage(vector<string> deviceIDs, string content, bool silent) {
if(content.empty()) {
throw new runtime_error("Content shall not be empty");
}
json request;
request["devices"] = deviceIDs;
request["content"] = content;
request["silent"] = silent;
json j = call(PUT, URL_PN_TXT, this->appToken.token.c_str(), request);
return j["error"].empty();
}
bool PushNotifier::sendMessage(string deviceID, string content, bool silent) {
vector<string> buf;
buf.push_back(deviceID);
return sendMessage(buf, content, silent);
}
bool PushNotifier::sendURL(vector<string> deviceIDs, string url, bool silent) {
if(url.empty()) {
throw new runtime_error("URL shall not be empty");
}
json request;
request["devices"] = deviceIDs;
request["url"] = url;
request["silent"] = silent;
json j = call(PUT, URL_PN_URL, this->appToken.token.c_str(), request);
return j["error"].empty();
}
bool PushNotifier::sendURL(string deviceID, string url, bool silent) {
vector<string> buf;
buf.push_back(deviceID);
return sendURL(buf, url, silent);
}
bool PushNotifier::sendNotification(vector<string> deviceIDs, string content, string url, bool silent) {
if(url.empty() || content.empty()) {
throw new runtime_error("Content and URL shall not be empty");
}
json request;
request["devices"] = deviceIDs;
request["url"] = url;
request["content"] = content;
request["silent"] = silent;
json j = call(PUT, URL_PN_NOTIFICATION, this->appToken.token.c_str(), request);
return j["error"].empty();
}
bool PushNotifier::sendNotification(string deviceID, string content, string url, bool silent) {
vector<string> buf;
buf.push_back(deviceID);
return sendNotification(buf, content, url, silent);
}
// needed for handling curl output¬
static size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *userp) {
((string*) userp)->append((char*) contents, size * nmemb);
return size * nmemb;
}
json PushNotifier::call(http_method method, string url, const char* xapptoken, json body) {
CURL *curl;
CURLcode res;
struct curl_slist *chunk = NULL;
string readBuffer;
// We need to add an authentication header
string auth = "Authorization: Basic " + this->authorization;
chunk = curl_slist_append(chunk, auth.c_str());
chunk = curl_slist_append(chunk, "Accept: application/json");
chunk = curl_slist_append(chunk, "Content-Type: application/json");
// X-AppToken is set
if(xapptoken != NULL) {
string buf = (string) "X-AppToken: " + xapptoken;
chunk = curl_slist_append(chunk, buf.c_str());
}
curl = curl_easy_init();
if(curl) {
string data = body.dump();
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, chunk);
curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
if(method == POST) {
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data.c_str());
} else if(method == PUT) {
curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "PUT");
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data.c_str());
}
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer);
// Perform the request, res will get the return code
res = curl_easy_perform(curl);
// Check for errors
if(res != CURLE_OK) {
throw runtime_error(curl_easy_strerror(res));
}
if(res == 500) {
throw runtime_error("");
}
if(res == 401) {
throw runtime_error("");
}
// always cleanup
curl_easy_cleanup(curl);
}
return json::parse(readBuffer);
}