diff options
Diffstat (limited to 'src/web_service/web_backend.cpp')
| -rw-r--r-- | src/web_service/web_backend.cpp | 235 |
1 files changed, 141 insertions, 94 deletions
diff --git a/src/web_service/web_backend.cpp b/src/web_service/web_backend.cpp index 787b0fbcb..b7737b615 100644 --- a/src/web_service/web_backend.cpp +++ b/src/web_service/web_backend.cpp @@ -3,9 +3,11 @@ // Refer to the license.txt file included. #include <cstdlib> +#include <mutex> #include <string> -#include <thread> #include <LUrlParser.h> +#include <httplib.h> +#include "common/common_types.h" #include "common/logging/log.h" #include "common/web_result.h" #include "core/settings.h" @@ -20,99 +22,132 @@ constexpr u32 HTTPS_PORT = 443; constexpr u32 TIMEOUT_SECONDS = 30; -Client::JWTCache Client::jwt_cache{}; +struct Client::Impl { + Impl(std::string host, std::string username, std::string token) + : host{std::move(host)}, username{std::move(username)}, token{std::move(token)} { + std::lock_guard<std::mutex> lock(jwt_cache.mutex); + if (this->username == jwt_cache.username && this->token == jwt_cache.token) { + jwt = jwt_cache.jwt; + } + } + + /// A generic function handles POST, GET and DELETE request together + Common::WebResult GenericJson(const std::string& method, const std::string& path, + const std::string& data, bool allow_anonymous) { + if (jwt.empty()) { + UpdateJWT(); + } + + if (jwt.empty() && !allow_anonymous) { + LOG_ERROR(WebService, "Credentials must be provided for authenticated requests"); + return Common::WebResult{Common::WebResult::Code::CredentialsMissing, + "Credentials needed"}; + } + + auto result = GenericJson(method, path, data, jwt); + if (result.result_string == "401") { + // Try again with new JWT + UpdateJWT(); + result = GenericJson(method, path, data, jwt); + } -Client::Client(const std::string& host, const std::string& username, const std::string& token) - : host(host), username(username), token(token) { - std::lock_guard<std::mutex> lock(jwt_cache.mutex); - if (username == jwt_cache.username && token == jwt_cache.token) { - jwt = jwt_cache.jwt; + return result; } -} -Common::WebResult Client::GenericJson(const std::string& method, const std::string& path, - const std::string& data, const std::string& jwt, - const std::string& username, const std::string& token) { - if (cli == nullptr) { - auto parsedUrl = LUrlParser::clParseURL::ParseURL(host); - int port; - if (parsedUrl.m_Scheme == "http") { - if (!parsedUrl.GetPort(&port)) { - port = HTTP_PORT; - } - cli = - std::make_unique<httplib::Client>(parsedUrl.m_Host.c_str(), port, TIMEOUT_SECONDS); - } else if (parsedUrl.m_Scheme == "https") { - if (!parsedUrl.GetPort(&port)) { - port = HTTPS_PORT; + /** + * A generic function with explicit authentication method specified + * JWT is used if the jwt parameter is not empty + * username + token is used if jwt is empty but username and token are not empty + * anonymous if all of jwt, username and token are empty + */ + Common::WebResult GenericJson(const std::string& method, const std::string& path, + const std::string& data, const std::string& jwt = "", + const std::string& username = "", const std::string& token = "") { + if (cli == nullptr) { + auto parsedUrl = LUrlParser::clParseURL::ParseURL(host); + int port; + if (parsedUrl.m_Scheme == "http") { + if (!parsedUrl.GetPort(&port)) { + port = HTTP_PORT; + } + cli = std::make_unique<httplib::Client>(parsedUrl.m_Host.c_str(), port, + TIMEOUT_SECONDS); + } else if (parsedUrl.m_Scheme == "https") { + if (!parsedUrl.GetPort(&port)) { + port = HTTPS_PORT; + } + cli = std::make_unique<httplib::SSLClient>(parsedUrl.m_Host.c_str(), port, + TIMEOUT_SECONDS); + } else { + LOG_ERROR(WebService, "Bad URL scheme {}", parsedUrl.m_Scheme); + return Common::WebResult{Common::WebResult::Code::InvalidURL, "Bad URL scheme"}; } - cli = std::make_unique<httplib::SSLClient>(parsedUrl.m_Host.c_str(), port, - TIMEOUT_SECONDS); - } else { - LOG_ERROR(WebService, "Bad URL scheme {}", parsedUrl.m_Scheme); - return Common::WebResult{Common::WebResult::Code::InvalidURL, "Bad URL scheme"}; } - } - if (cli == nullptr) { - LOG_ERROR(WebService, "Invalid URL {}", host + path); - return Common::WebResult{Common::WebResult::Code::InvalidURL, "Invalid URL"}; - } + if (cli == nullptr) { + LOG_ERROR(WebService, "Invalid URL {}", host + path); + return Common::WebResult{Common::WebResult::Code::InvalidURL, "Invalid URL"}; + } - httplib::Headers params; - if (!jwt.empty()) { - params = { - {std::string("Authorization"), fmt::format("Bearer {}", jwt)}, - }; - } else if (!username.empty()) { - params = { - {std::string("x-username"), username}, - {std::string("x-token"), token}, + httplib::Headers params; + if (!jwt.empty()) { + params = { + {std::string("Authorization"), fmt::format("Bearer {}", jwt)}, + }; + } else if (!username.empty()) { + params = { + {std::string("x-username"), username}, + {std::string("x-token"), token}, + }; + } + + params.emplace(std::string("api-version"), + std::string(API_VERSION.begin(), API_VERSION.end())); + if (method != "GET") { + params.emplace(std::string("Content-Type"), std::string("application/json")); }; - } - params.emplace(std::string("api-version"), std::string(API_VERSION.begin(), API_VERSION.end())); - if (method != "GET") { - params.emplace(std::string("Content-Type"), std::string("application/json")); - }; + httplib::Request request; + request.method = method; + request.path = path; + request.headers = params; + request.body = data; - httplib::Request request; - request.method = method; - request.path = path; - request.headers = params; - request.body = data; + httplib::Response response; - httplib::Response response; + if (!cli->send(request, response)) { + LOG_ERROR(WebService, "{} to {} returned null", method, host + path); + return Common::WebResult{Common::WebResult::Code::LibError, "Null response"}; + } - if (!cli->send(request, response)) { - LOG_ERROR(WebService, "{} to {} returned null", method, host + path); - return Common::WebResult{Common::WebResult::Code::LibError, "Null response"}; - } + if (response.status >= 400) { + LOG_ERROR(WebService, "{} to {} returned error status code: {}", method, host + path, + response.status); + return Common::WebResult{Common::WebResult::Code::HttpError, + std::to_string(response.status)}; + } - if (response.status >= 400) { - LOG_ERROR(WebService, "{} to {} returned error status code: {}", method, host + path, - response.status); - return Common::WebResult{Common::WebResult::Code::HttpError, - std::to_string(response.status)}; - } + auto content_type = response.headers.find("content-type"); - auto content_type = response.headers.find("content-type"); + if (content_type == response.headers.end()) { + LOG_ERROR(WebService, "{} to {} returned no content", method, host + path); + return Common::WebResult{Common::WebResult::Code::WrongContent, ""}; + } - if (content_type == response.headers.end()) { - LOG_ERROR(WebService, "{} to {} returned no content", method, host + path); - return Common::WebResult{Common::WebResult::Code::WrongContent, ""}; + if (content_type->second.find("application/json") == std::string::npos && + content_type->second.find("text/html; charset=utf-8") == std::string::npos) { + LOG_ERROR(WebService, "{} to {} returned wrong content: {}", method, host + path, + content_type->second); + return Common::WebResult{Common::WebResult::Code::WrongContent, "Wrong content"}; + } + return Common::WebResult{Common::WebResult::Code::Success, "", response.body}; } - if (content_type->second.find("application/json") == std::string::npos && - content_type->second.find("text/html; charset=utf-8") == std::string::npos) { - LOG_ERROR(WebService, "{} to {} returned wrong content: {}", method, host + path, - content_type->second); - return Common::WebResult{Common::WebResult::Code::WrongContent, "Wrong content"}; - } - return Common::WebResult{Common::WebResult::Code::Success, "", response.body}; -} + // Retrieve a new JWT from given username and token + void UpdateJWT() { + if (username.empty() || token.empty()) { + return; + } -void Client::UpdateJWT() { - if (!username.empty() && !token.empty()) { auto result = GenericJson("POST", "/jwt/internal", "", "", username, token); if (result.result_code != Common::WebResult::Code::Success) { LOG_ERROR(WebService, "UpdateJWT failed"); @@ -123,27 +158,39 @@ void Client::UpdateJWT() { jwt_cache.jwt = jwt = result.returned_data; } } -} -Common::WebResult Client::GenericJson(const std::string& method, const std::string& path, - const std::string& data, bool allow_anonymous) { - if (jwt.empty()) { - UpdateJWT(); - } + std::string host; + std::string username; + std::string token; + std::string jwt; + std::unique_ptr<httplib::Client> cli; + + struct JWTCache { + std::mutex mutex; + std::string username; + std::string token; + std::string jwt; + }; + static inline JWTCache jwt_cache; +}; - if (jwt.empty() && !allow_anonymous) { - LOG_ERROR(WebService, "Credentials must be provided for authenticated requests"); - return Common::WebResult{Common::WebResult::Code::CredentialsMissing, "Credentials needed"}; - } +Client::Client(std::string host, std::string username, std::string token) + : impl{std::make_unique<Impl>(std::move(host), std::move(username), std::move(token))} {} - auto result = GenericJson(method, path, data, jwt); - if (result.result_string == "401") { - // Try again with new JWT - UpdateJWT(); - result = GenericJson(method, path, data, jwt); - } +Client::~Client() = default; + +Common::WebResult Client::PostJson(const std::string& path, const std::string& data, + bool allow_anonymous) { + return impl->GenericJson("POST", path, data, allow_anonymous); +} + +Common::WebResult Client::GetJson(const std::string& path, bool allow_anonymous) { + return impl->GenericJson("GET", path, "", allow_anonymous); +} - return result; +Common::WebResult Client::DeleteJson(const std::string& path, const std::string& data, + bool allow_anonymous) { + return impl->GenericJson("DELETE", path, data, allow_anonymous); } } // namespace WebService |