198 lines
7.9 KiB
C++
198 lines
7.9 KiB
C++
// Copyright 2017 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#ifdef _WIN32
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#include <winsock.h>
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#endif
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#include <cstdlib>
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#include <thread>
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#include <cpr/cpr.h>
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#include "common/announce_multiplayer_room.h"
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#include "common/logging/log.h"
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#include "web_service/web_backend.h"
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namespace WebService {
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static constexpr char API_VERSION[]{"1"};
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static std::unique_ptr<cpr::Session> g_session;
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void Win32WSAStartup() {
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#ifdef _WIN32
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// On Windows, CPR/libcurl does not properly initialize Winsock. The below code is used to
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// initialize Winsock globally, which fixes this problem. Without this, only the first CPR
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// session will properly be created, and subsequent ones will fail.
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WSADATA wsa_data;
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const int wsa_result{WSAStartup(MAKEWORD(2, 2), &wsa_data)};
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if (wsa_result) {
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LOG_CRITICAL(WebService, "WSAStartup failed: %d", wsa_result);
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}
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#endif
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}
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std::future<Common::WebResult> PostJson(const std::string& url, const std::string& data,
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bool allow_anonymous, const std::string& username,
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const std::string& token) {
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if (url.empty()) {
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LOG_ERROR(WebService, "URL is invalid");
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return std::async(std::launch::deferred, []() {
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return Common::WebResult{Common::WebResult::Code::InvalidURL, "URL is invalid"};
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});
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}
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const bool are_credentials_provided{!token.empty() && !username.empty()};
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if (!allow_anonymous && !are_credentials_provided) {
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LOG_ERROR(WebService, "Credentials must be provided for authenticated requests");
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return std::async(std::launch::deferred, []() {
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return Common::WebResult{Common::WebResult::Code::CredentialsMissing,
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"Credentials needed"};
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});
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}
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Win32WSAStartup();
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// Built request header
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cpr::Header header;
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if (are_credentials_provided) {
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// Authenticated request if credentials are provided
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header = {{"Content-Type", "application/json"},
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{"x-username", username.c_str()},
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{"x-token", token.c_str()},
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{"api-version", API_VERSION}};
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} else {
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// Otherwise, anonymous request
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header = cpr::Header{{"Content-Type", "application/json"}, {"api-version", API_VERSION}};
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}
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// Post JSON asynchronously
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return cpr::PostCallback(
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[](cpr::Response r) {
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if (r.error) {
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LOG_ERROR(WebService, "POST to %s returned cpr error: %u:%s", r.url.c_str(),
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static_cast<u32>(r.error.code), r.error.message.c_str());
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return Common::WebResult{Common::WebResult::Code::CprError, r.error.message};
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}
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if (r.status_code >= 400) {
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LOG_ERROR(WebService, "POST to %s returned error status code: %u", r.url.c_str(),
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r.status_code);
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return Common::WebResult{Common::WebResult::Code::HttpError,
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std::to_string(r.status_code)};
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}
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if (r.header["content-type"].find("application/json") == std::string::npos) {
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LOG_ERROR(WebService, "POST to %s returned wrong content: %s", r.url.c_str(),
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r.header["content-type"].c_str());
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return Common::WebResult{Common::WebResult::Code::WrongContent,
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r.header["content-type"]};
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}
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return Common::WebResult{Common::WebResult::Code::Success, ""};
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},
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cpr::Url{url}, cpr::Body{data}, header);
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}
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template <typename T>
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std::future<T> GetJson(std::function<T(const std::string&)> func, const std::string& url,
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bool allow_anonymous, const std::string& username,
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const std::string& token) {
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if (url.empty()) {
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LOG_ERROR(WebService, "URL is invalid");
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return std::async(std::launch::deferred, [func{std::move(func)}]() { return func(""); });
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}
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const bool are_credentials_provided{!token.empty() && !username.empty()};
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if (!allow_anonymous && !are_credentials_provided) {
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LOG_ERROR(WebService, "Credentials must be provided for authenticated requests");
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return std::async(std::launch::deferred, [func{std::move(func)}]() { return func(""); });
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}
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Win32WSAStartup();
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// Built request header
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cpr::Header header;
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if (are_credentials_provided) {
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// Authenticated request if credentials are provided
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header = {{"Content-Type", "application/json"},
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{"x-username", username.c_str()},
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{"x-token", token.c_str()},
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{"api-version", API_VERSION}};
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} else {
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// Otherwise, anonymous request
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header = cpr::Header{{"Content-Type", "application/json"}, {"api-version", API_VERSION}};
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}
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// Get JSON asynchronously
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return cpr::GetCallback(
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[func{std::move(func)}](cpr::Response r) {
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if (r.error) {
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LOG_ERROR(WebService, "GET to %s returned cpr error: %u:%s", r.url.c_str(),
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static_cast<u32>(r.error.code), r.error.message.c_str());
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return func("");
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}
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if (r.status_code >= 400) {
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LOG_ERROR(WebService, "GET to %s returned error code: %u", r.url.c_str(),
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r.status_code);
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return func("");
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}
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if (r.header["content-type"].find("application/json") == std::string::npos) {
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LOG_ERROR(WebService, "GET to %s returned wrong content: %s", r.url.c_str(),
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r.header["content-type"].c_str());
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return func("");
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}
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return func(r.text);
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},
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cpr::Url{url}, header);
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}
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template std::future<bool> GetJson(std::function<bool(const std::string&)> func,
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const std::string& url, bool allow_anonymous,
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const std::string& username, const std::string& token);
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template std::future<AnnounceMultiplayerRoom::RoomList> GetJson(
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std::function<AnnounceMultiplayerRoom::RoomList(const std::string&)> func,
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const std::string& url, bool allow_anonymous, const std::string& username,
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const std::string& token);
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void DeleteJson(const std::string& url, const std::string& data, const std::string& username,
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const std::string& token) {
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if (url.empty()) {
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LOG_ERROR(WebService, "URL is invalid");
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return;
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}
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if (token.empty() || username.empty()) {
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LOG_ERROR(WebService, "Credentials must be provided for authenticated requests");
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return;
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}
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Win32WSAStartup();
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// Built request header
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cpr::Header header = {{"Content-Type", "application/json"},
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{"x-username", username.c_str()},
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{"x-token", token.c_str()},
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{"api-version", API_VERSION}};
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// Delete JSON asynchronously
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static std::future<void> future;
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future = cpr::DeleteCallback(
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[](cpr::Response r) {
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if (r.error) {
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LOG_ERROR(WebService, "Delete to %s returned cpr error: %u:%s", r.url.c_str(),
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static_cast<u32>(r.error.code), r.error.message.c_str());
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return;
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}
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if (r.status_code >= 400) {
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LOG_ERROR(WebService, "Delete to %s returned error status code: %u", r.url.c_str(),
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r.status_code);
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return;
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}
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if (r.header["content-type"].find("application/json") == std::string::npos) {
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LOG_ERROR(WebService, "Delete to %s returned wrong content: %s", r.url.c_str(),
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r.header["content-type"].c_str());
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return;
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}
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},
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cpr::Url{url}, cpr::Body{data}, header);
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}
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} // namespace WebService
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