Files
wlan-cloud-ucentralsec/src/RESTAPI_handler.cpp
2021-07-04 09:09:34 -07:00

348 lines
11 KiB
C++

//
// License type: BSD 3-Clause License
// License copy: https://github.com/Telecominfraproject/wlan-cloud-ucentralgw/blob/master/LICENSE
//
// Created by Stephane Bourque on 2021-03-04.
// Arilia Wireless Inc.
//
#include <cctype>
#include <algorithm>
#include <iostream>
#include <iterator>
#include <future>
#include <chrono>
#include "Poco/URI.h"
#include "Poco/Net/OAuth20Credentials.h"
#ifdef TIP_SECURITY_SERVICE
#include "AuthService.h"
#else
#include "AuthClient.h"
#endif
#include "RESTAPI_handler.h"
#include "RESTAPI_protocol.h"
#include "Utils.h"
namespace uCentral {
bool RESTAPIHandler::ParseBindings(const std::string & Request, const std::list<const char *> & EndPoints, BindingMap &bindings) {
std::string Param, Value;
bindings.clear();
std::vector<std::string> PathItems = uCentral::Utils::Split(Request, '/');
for(const auto &EndPoint:EndPoints) {
std::vector<std::string> ParamItems = uCentral::Utils::Split(EndPoint, '/');
if (PathItems.size() != ParamItems.size())
continue;
bool Matched = true;
for (auto i = 0; i != PathItems.size() && Matched; i++) {
// std::cout << "PATH:" << PathItems[i] << " ENDPOINT:" << ParamItems[i] << std::endl;
if (PathItems[i] != ParamItems[i]) {
if (ParamItems[i][0] == '{') {
auto ParamName = ParamItems[i].substr(1, ParamItems[i].size() - 2);
bindings[ParamName] = PathItems[i];
} else {
Matched = false;
}
}
}
if(Matched)
return true;
}
return false;
}
void RESTAPIHandler::PrintBindings() {
for (auto &[key, value] : Bindings_)
std::cout << "Key = " << key << " Value= " << value << std::endl;
}
void RESTAPIHandler::ParseParameters(Poco::Net::HTTPServerRequest &request) {
Poco::URI uri(request.getURI());
Parameters_ = uri.getQueryParameters();
}
static bool is_number(const std::string &s) {
return !s.empty() && std::all_of(s.begin(), s.end(), ::isdigit);
}
static bool is_bool(const std::string &s) {
if (s == "true" || s == "false")
return true;
return false;
}
uint64_t RESTAPIHandler::GetParameter(const std::string &Name, const uint64_t Default) {
for (const auto &i : Parameters_) {
if (i.first == Name) {
if (!is_number(i.second))
return Default;
return std::stoi(i.second);
}
}
return Default;
}
bool RESTAPIHandler::GetBoolParameter(const std::string &Name, bool Default) {
for (const auto &i : Parameters_) {
if (i.first == Name) {
if (!is_bool(i.second))
return Default;
return i.second == "true";
}
}
return Default;
}
std::string RESTAPIHandler::GetParameter(const std::string &Name, const std::string &Default) {
for (const auto &i : Parameters_) {
if (i.first == Name)
return i.second;
}
return Default;
}
const std::string &RESTAPIHandler::GetBinding(const std::string &Name, const std::string &Default) {
auto E = Bindings_.find(Name);
if (E == Bindings_.end())
return Default;
return E->second;
}
static std::string MakeList(const std::vector<std::string> &L) {
std::string Return;
for (const auto &i : L)
if (Return.empty())
Return = i;
else
Return += ", " + i;
return Return;
}
void RESTAPIHandler::AddCORS(Poco::Net::HTTPServerRequest &Request,
Poco::Net::HTTPServerResponse &Response) {
auto Origin = Request.find("Origin");
if (Origin != Request.end()) {
Response.set("Access-Control-Allow-Origin", Origin->second);
Response.set("Vary", "Origin");
} else {
Response.set("Access-Control-Allow-Origin", "*");
}
Response.set("Access-Control-Allow-Headers", "*");
Response.set("Access-Control-Allow-Methods", MakeList(Methods_));
Response.set("Access-Control-Max-Age", "86400");
}
void RESTAPIHandler::SetCommonHeaders(Poco::Net::HTTPServerResponse &Response, bool CloseConnection) {
Response.setVersion(Poco::Net::HTTPMessage::HTTP_1_1);
Response.setChunkedTransferEncoding(true);
Response.setContentType("application/json");
if(CloseConnection) {
Response.set("Connection", "close");
Response.setKeepAlive(false);
} else {
Response.setKeepAlive(true);
Response.set("Connection", "Keep-Alive");
Response.set("Keep-Alive", "timeout=5, max=1000");
}
}
void RESTAPIHandler::ProcessOptions(Poco::Net::HTTPServerRequest &Request,
Poco::Net::HTTPServerResponse &Response) {
AddCORS(Request, Response);
SetCommonHeaders(Response);
Response.setContentLength(0);
Response.set("Access-Control-Allow-Credentials", "true");
Response.setStatus(Poco::Net::HTTPResponse::HTTP_OK);
Response.set("Vary", "Origin, Access-Control-Request-Headers, Access-Control-Request-Method");
/* std::cout << "RESPONSE:" << std::endl;
for(const auto &[f,s]:Response)
std::cout << "First: " << f << " second:" << s << std::endl;
*/
Response.send();
}
void RESTAPIHandler::PrepareResponse(Poco::Net::HTTPServerRequest &Request,
Poco::Net::HTTPServerResponse &Response,
Poco::Net::HTTPResponse::HTTPStatus Status,
bool CloseConnection) {
Response.setStatus(Status);
AddCORS(Request, Response);
SetCommonHeaders(Response, CloseConnection);
}
void RESTAPIHandler::BadRequest(Poco::Net::HTTPServerRequest &Request,
Poco::Net::HTTPServerResponse &Response) {
PrepareResponse(Request, Response, Poco::Net::HTTPResponse::HTTP_BAD_REQUEST);
Response.send();
}
void RESTAPIHandler::UnAuthorized(Poco::Net::HTTPServerRequest &Request,
Poco::Net::HTTPServerResponse &Response) {
PrepareResponse(Request, Response, Poco::Net::HTTPResponse::HTTP_FORBIDDEN);
Response.send();
}
void RESTAPIHandler::NotFound(Poco::Net::HTTPServerRequest &Request,
Poco::Net::HTTPServerResponse &Response) {
PrepareResponse(Request, Response, Poco::Net::HTTPResponse::HTTP_NOT_FOUND);
Response.send();
}
void RESTAPIHandler::OK(Poco::Net::HTTPServerRequest &Request,
Poco::Net::HTTPServerResponse &Response) {
PrepareResponse(Request, Response);
Response.send();
}
void RESTAPIHandler::SendFile(Poco::File & File, const std::string & UUID, Poco::Net::HTTPServerRequest &Request, Poco::Net::HTTPServerResponse &Response) {
Response.set("Content-Type","application/octet-stream");
Response.set("Content-Disposition", "attachment; filename=" + UUID );
Response.set("Content-Transfer-Encoding","binary");
Response.set("Accept-Ranges", "bytes");
Response.set("Cache-Control", "private");
Response.set("Pragma", "private");
Response.set("Expires", "Mon, 26 Jul 2027 05:00:00 GMT");
Response.set("Content-Length", std::to_string(File.getSize()));
AddCORS(Request, Response);
Response.sendFile(File.path(),"application/octet-stream");
}
void RESTAPIHandler::ReturnStatus(Poco::Net::HTTPServerRequest &Request,
Poco::Net::HTTPServerResponse &Response,
Poco::Net::HTTPResponse::HTTPStatus Status,
bool CloseConnection) {
PrepareResponse(Request, Response, Status, CloseConnection);
if(Status == Poco::Net::HTTPResponse::HTTP_NO_CONTENT) {
Response.setContentLength(0);
Response.erase("Content-Type");
Response.setChunkedTransferEncoding(false);
}
Response.send();
}
bool RESTAPIHandler::ContinueProcessing(Poco::Net::HTTPServerRequest &Request,
Poco::Net::HTTPServerResponse &Response) {
if (Request.getMethod() == Poco::Net::HTTPRequest::HTTP_OPTIONS) {
/* std::cout << "REQUEST:" << std::endl;
for(const auto &[f,s]:Request)
std::cout << "First: " << f << " second:" << s << std::endl;
*/
ProcessOptions(Request, Response);
return false;
} else if (std::find(Methods_.begin(), Methods_.end(), Request.getMethod()) == Methods_.end()) {
BadRequest(Request, Response);
return false;
}
return true;
}
bool RESTAPIHandler::IsAuthorized(Poco::Net::HTTPServerRequest &Request,
Poco::Net::HTTPServerResponse &Response) {
if(SessionToken_.empty()) {
try {
Poco::Net::OAuth20Credentials Auth(Request);
if (Auth.getScheme() == "Bearer") {
SessionToken_ = Auth.getBearerToken();
}
} catch(const Poco::Exception &E) {
Logger_.log(E);
}
}
#ifdef TIP_SECURITY_SERVICE
if (AuthService()->IsAuthorized(Request, SessionToken_, UserInfo_)) {
#else
if (AuthClient()->IsAuthorized(Request, SessionToken_, UserInfo_)) {
#endif
return true;
} else {
UnAuthorized(Request, Response);
}
return false;
}
bool RESTAPIHandler::IsAuthorized(Poco::Net::HTTPServerRequest &Request,
Poco::Net::HTTPServerResponse &Response, std::string &UserName) {
#ifdef TIP_SECURITY_SERVICE
if (AuthService()->IsAuthorized(Request, SessionToken_, UserInfo_)) {
#else
if (AuthClient()->IsAuthorized(Request, SessionToken_, UserInfo_)) {
#endif
UserName = UserInfo_.webtoken.username_;
return true;
} else {
UnAuthorized(Request, Response);
}
return false;
}
bool RESTAPIHandler::ValidateAPIKey(Poco::Net::HTTPServerRequest &Request,
Poco::Net::HTTPServerResponse &Response) {
auto Key = Request.get("X-API-KEY", "");
if (Key.empty())
return false;
return true;
}
void RESTAPIHandler::ReturnObject(Poco::Net::HTTPServerRequest &Request, Poco::JSON::Object &Object,
Poco::Net::HTTPServerResponse &Response) {
PrepareResponse(Request, Response);
std::ostream &Answer = Response.send();
Poco::JSON::Stringifier::stringify(Object, Answer);
}
void RESTAPIHandler::InitQueryBlock() {
QB_.SerialNumber = GetParameter(uCentral::RESTAPI::Protocol::SERIALNUMBER, "");
QB_.StartDate = GetParameter(uCentral::RESTAPI::Protocol::STARTDATE, 0);
QB_.EndDate = GetParameter(uCentral::RESTAPI::Protocol::ENDDATE, 0);
QB_.Offset = GetParameter(uCentral::RESTAPI::Protocol::OFFSET, 0);
QB_.Limit = GetParameter(uCentral::RESTAPI::Protocol::LIMIT, 100);
QB_.Filter = GetParameter(uCentral::RESTAPI::Protocol::FILTER, "");
QB_.Select = GetParameter(uCentral::RESTAPI::Protocol::SELECT, "");
QB_.Lifetime = GetBoolParameter(uCentral::RESTAPI::Protocol::LIFETIME,false);
QB_.LogType = GetParameter(uCentral::RESTAPI::Protocol::LOGTYPE,0);
QB_.LastOnly = GetBoolParameter(uCentral::RESTAPI::Protocol::LASTONLY,false);
QB_.Newest = GetBoolParameter(uCentral::RESTAPI::Protocol::NEWEST,false);
}
[[nodiscard]] uint64_t RESTAPIHandler::Get(const char *Parameter,const Poco::JSON::Object::Ptr &Obj, uint64_t Default){
if(Obj->has(Parameter))
return Obj->get(Parameter);
return Default;
}
[[nodiscard]] std::string RESTAPIHandler::GetS(const char *Parameter,const Poco::JSON::Object::Ptr &Obj, const std::string & Default){
if(Obj->has(Parameter))
return Obj->get(Parameter).toString();
return Default;
}
[[nodiscard]] bool RESTAPIHandler::GetB(const char *Parameter,const Poco::JSON::Object::Ptr &Obj, bool Default){
if(Obj->has(Parameter))
return Obj->get(Parameter).toString()=="true";
return Default;
}
[[nodiscard]] uint64_t RESTAPIHandler::GetWhen(const Poco::JSON::Object::Ptr &Obj) {
return RESTAPIHandler::Get(uCentral::RESTAPI::Protocol::WHEN, Obj);
}
}