httpgateway: set new max payload length config value

config.cpp

@@ -53,6 +53,17 @@ int Config::optional(const std::string &key, int defaultvalue)
 	return defaultvalue;
 }
 
+uint64_t Config::optional(const std::string &key, uint64_t defaultvalue)
+{
+	auto it = this->configmap.find(key);
+	if(it != this->configmap.end())
+	{
+		std::string str = it->second;
+		return static_cast<uint64_t>(std::stoull(str));
+	}
+	return defaultvalue;
+}
+
 Config::Config(const std::map<std::string, std::string> &map)
 {
 
@@ -93,6 +104,8 @@ Config::Config(const std::map<std::string, std::string> &map)
 	this->anon_permissions = Permissions(required("anon_permissions"));
 
 	this->templateprefix = "{qswiki:";
+
+	this->max_payload_length = optional("max_payload_length", 10 * 1024 * 1024);
 }
 
 ConfigReader::ConfigReader(const std::string &file)

config.h

@@ -14,6 +14,7 @@ class Config
 
 	std::string optional(const std::string &key, std::string defaultvalue = "");
 	int optional(const std::string &key, int defaulvalue);
+	uint64_t optional(const std::string &key, uint64_t defaultvalue);
 
   public:
 	Config(const std::map<std::string, std::string> &map);
@@ -51,6 +52,9 @@ class Config
 	int session_max_lifetime;
 	int max_pagename_length;
 	int threadscount;
+
+	uint64_t max_payload_length;
+
 	Permissions anon_permissions;
 
 	std::string getConfig(const std::string &key) const

gateway/httpgateway.cpp

@@ -33,6 +33,8 @@ HttpGateway::HttpGateway(const Config &config)
 		throw new std::runtime_error("No http.listenport in config file");
 	}
 	this->listenport = std::stoi(listenport);
+
+	this->maxPayloadLength = config.max_payload_length;
 }
 
 bool HttpGateway::keepReading()
@@ -90,7 +92,7 @@ httplib::Response HttpGateway::convertResponse(Response response)
 void HttpGateway::work(RequestWorker &worker)
 {
 	httplib::Server server;
-
+	server.set_payload_max_length(this->maxPayloadLength);
 	auto handler = [&](const httplib::Request &req, httplib::Response &res) {
 		Request wikiRequest = convertRequest(req);
 		Logger::debug() << "httpgateway: received request " << wikiRequest;

gateway/httpgateway.h

@@ -16,6 +16,7 @@ class HttpGateway : public GatewayInterface
 
 	std::string listenaddr;
 	int listenport;
+	uint64_t maxPayloadLength;
 
   public:
 	HttpGateway(const Config &config);