From 17433b0cbcacc3f41fd500551baf4d52d291e0c9 Mon Sep 17 00:00:00 2001
From: Roland Reichwein <mail@reichwein.it>
Date: Sat, 2 May 2020 18:12:46 +0200
Subject: Statistics: IPv6 and HTTP fractions

---
 plugins/statistics/statistics.cpp | 37 ++++++++++++++++++++++++++++++++++++-
 1 file changed, 36 insertions(+), 1 deletion(-)

(limited to 'plugins')

diff --git a/plugins/statistics/statistics.cpp b/plugins/statistics/statistics.cpp
index 543cc4e..5eef858 100644
--- a/plugins/statistics/statistics.cpp
+++ b/plugins/statistics/statistics.cpp
@@ -1,6 +1,7 @@
 #include "statistics.h"
 
 #include <boost/algorithm/string/predicate.hpp>
+#include <boost/algorithm/string/split.hpp>
 #include <boost/coroutine2/coroutine.hpp>
 #include <boost/process.hpp>
 
@@ -25,6 +26,30 @@ namespace {
   return status + " " + message;
  }
 
+ // returns sum over specified column
+ uint64_t getSum(const std::string& stats, size_t column)
+ {
+  uint64_t result{0};
+
+  std::istringstream is{stats};
+  std::string line;
+
+  while (std::getline(is, line) && !is.eof()) {
+
+   std::vector<std::string> elements;
+   boost::algorithm::split(elements, line, [](char c){ return c == ','; });
+
+   if (column >= elements.size()) {
+    std::cerr << "Error: No column " << column << " found." << std::endl;
+    return 0;
+   }
+
+   result += stoull(elements[column]);
+  }
+
+  return result;
+ }
+
 } // anonymous namespace
 
 std::string statistics_plugin::name()
@@ -80,10 +105,20 @@ std::string statistics_plugin::generate_page(
 
    std::string result{header};
 
+   std::string statistics{GetServerParam("statistics")};
+   double ipv6_fraction_by_requests {double(getSum(statistics, 5)) / getSum(statistics, 1)};
+   double ipv6_fraction_by_bytes {double(getSum(statistics, 7) + getSum(statistics, 8)) / (getSum(statistics, 3) + getSum(statistics, 4))};
+   double https_fraction_by_requests {double(getSum(statistics, 9)) / getSum(statistics, 1)};
+   double https_fraction_by_bytes {double(getSum(statistics, 11) + getSum(statistics, 12)) / (getSum(statistics, 3) + getSum(statistics, 4))};
+
    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 += "<p>IPv6 fraction by requests: "s + std::to_string(ipv6_fraction_by_requests * 100) + "</p>";
+   result += "<p>IPv6 fraction by bytes: "s + std::to_string(ipv6_fraction_by_bytes * 100) + "</p>";
+   result += "<p>HTTPS fraction by requests: "s + std::to_string(https_fraction_by_requests * 100) + "</p>";
+   result += "<p>HTTPS fraction by bytes: "s + std::to_string(https_fraction_by_bytes * 100) + "</p>";
+   result += "<pre>"s + statistics + "</pre>"s;
 
    result += footer;
    
-- 
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