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#include "statistics.h"
#include <boost/algorithm/string/predicate.hpp>
#include <boost/coroutine2/coroutine.hpp>
#include <boost/process.hpp>
#include <algorithm>
#include <filesystem>
#include <fstream>
#include <iostream>
#include <string>
#include <unordered_map>
using namespace std::string_literals;
namespace bp = boost::process;
namespace fs = std::filesystem;
namespace {
// Used to return errors by generating response page and HTTP status code
std::string HttpStatus(std::string status, std::string message, std::function<plugin_interface_setter_type>& SetResponseHeader)
{
SetResponseHeader("status", status);
SetResponseHeader("content_type", "text/html");
return status + " " + message;
}
} // anonymous namespace
std::string statistics_plugin::name()
{
return "statistics";
}
statistics_plugin::statistics_plugin()
{
//std::cout << "Plugin constructor" << std::endl;
}
statistics_plugin::~statistics_plugin()
{
//std::cout << "Plugin destructor" << std::endl;
}
std::string statistics_plugin::generate_page(
std::function<std::string(const std::string& key)>& GetServerParam,
std::function<std::string(const std::string& key)>& GetRequestParam, // request including body (POST...)
std::function<void(const std::string& key, const std::string& value)>& SetResponseHeader // to be added to result string
)
{
try {
// Request path must not contain "..".
std::string rel_target{GetRequestParam("rel_target")};
size_t query_pos{rel_target.find("?")};
if (query_pos != rel_target.npos)
rel_target = rel_target.substr(0, query_pos);
std::string target{GetRequestParam("target")};
if (rel_target.find("..") != std::string::npos) {
return HttpStatus("400", "Illegal request: "s + target, SetResponseHeader);
}
// Build the path to the requested file
std::string doc_root{GetRequestParam("doc_root")};
fs::path path {fs::path{doc_root} / rel_target};
if (target.size() && target.back() != '/' && fs::is_directory(path)) {
std::string location{GetRequestParam("location") + "/"s};
SetResponseHeader("location", location);
return HttpStatus("301", "Correcting directory path", SetResponseHeader);
}
try {
SetResponseHeader("content_type", "text/html");
std::string header {"<!DOCTYPE html><html><head>"
"<meta charset=\"utf-8\"/>"
"<title>Webserver Statistics</title>"
"</head><body>"};
std::string footer{"<br/><br/><br/></body></html>"};
std::string result{header};
result += "<h1>Webserver Statistics</h1>";
result += "<p>Host uptime: "s + GetServerParam("uptime_host") + "</p>";
result += "<p>Host webserver: "s + GetServerParam("uptime_webserver") + "</p>";
result += "<pre>"s + GetServerParam("statistics") + "</pre>"s;
result += footer;
return result;
} catch (const std::exception& ex) {
return HttpStatus("500", "Statistics error: "s + ex.what(), SetResponseHeader);
}
} catch (const std::exception& ex) {
return HttpStatus("500", "Unknown Error: "s + ex.what(), SetResponseHeader);
}
}
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