From 6081819802972c716745a44e3521ccb3b3cf7b1a Mon Sep 17 00:00:00 2001
From: Roland Reichwein <mail@reichwein.it>
Date: Sat, 11 Apr 2020 13:17:32 +0200
Subject: Support IPv6

---
 config.cpp | 50 ++++++++++++++++++++++++++++++++------------------
 1 file changed, 32 insertions(+), 18 deletions(-)

(limited to 'config.cpp')

diff --git a/config.cpp b/config.cpp
index 78f33e9..8d6704c 100644
--- a/config.cpp
+++ b/config.cpp
@@ -4,11 +4,27 @@
 #include <boost/property_tree/ptree.hpp>
 #include <boost/property_tree/xml_parser.hpp>
 
+#include <algorithm>
+#include <exception>
 #include <iostream>
 
 namespace pt = boost::property_tree;
 using namespace std::string_literals;
 
+namespace {
+
+ void RemovePortFromHostname(std::string& hostname)
+ {
+  // besides hostnames and IPv4 addresses, consider IPv6 addresses: [xx::yy]:8080
+  // so only remove ":N" if after "]"
+  size_t pos = hostname.find_last_of(":]");
+  if (pos != hostname.npos && hostname[pos] == ':') {
+   hostname = hostname.substr(0, pos);
+  }
+ }
+
+} // anonymous namespace
+
 void Config::readConfigfile(std::string filename)
 {
  if (filename == "") {
@@ -185,10 +201,7 @@ std::string Config::DocRoot(const Socket& socket, const std::string& requested_h
  std::string result;
  size_t path_len{0}; // find longest matching prefix
 
- auto pos {host.find(':')};
- if (pos != host.npos) {
-  host = host.substr(0, pos);
- }
+ RemovePortFromHostname(host);
 
  for (const auto& site: m_sites) {
   if (std::find(socket.serve_sites.begin(), socket.serve_sites.end(), site.name) != socket.serve_sites.end()) {
@@ -197,7 +210,12 @@ std::string Config::DocRoot(const Socket& socket, const std::string& requested_h
      for (const auto& path: site.paths) {
       if (boost::starts_with(requested_path, path.requested) && path.requested.size() > path_len) {
        path_len = path.requested.size();
-       result = path.params.at("target");
+       try {
+        result = path.params.at("target");
+       } catch (const std::out_of_range& ex) {
+        std::cout << "Out of range at Config::DocRoot(): target" << std::endl;
+        std::rethrow_exception(std::current_exception());
+       }
       }
      }
     }
@@ -215,10 +233,7 @@ std::string Config::GetPlugin(const Socket& socket, const std::string& requested
  std::string result;
  size_t path_len{0};
 
- auto pos {host.find(':')};
- if (pos != host.npos) {
-  host = host.substr(0, pos);
- }
+ RemovePortFromHostname(host);
 
  for (const auto& site: m_sites) {
   if (std::find(socket.serve_sites.begin(), socket.serve_sites.end(), site.name) != socket.serve_sites.end()) {
@@ -227,7 +242,12 @@ std::string Config::GetPlugin(const Socket& socket, const std::string& requested
      for (const auto& path: site.paths) {
       if (boost::starts_with(requested_path, path.requested) && path.requested.size() > path_len) {
        path_len = path.requested.size();
-       result = path.params.at("plugin");
+       try {
+        result = path.params.at("plugin");
+       } catch (const std::out_of_range& ex) {
+        std::cout << "Out of range at Config::DocRoot(): target" << std::endl;
+        std::rethrow_exception(std::current_exception());
+       }
       }
      }
     }
@@ -245,10 +265,7 @@ std::string Config::GetPluginPath(const Socket& socket, const std::string& reque
  std::string result;
  size_t path_len{0};
 
- auto pos {host.find(':')};
- if (pos != host.npos) {
-  host = host.substr(0, pos);
- }
+ RemovePortFromHostname(host);
 
  for (const auto& site: m_sites) {
   if (std::find(socket.serve_sites.begin(), socket.serve_sites.end(), site.name) != socket.serve_sites.end()) {
@@ -275,10 +292,7 @@ std::string Config::GetRelativePath(const Socket& socket, const std::string& req
  std::string result;
  size_t path_len{0};
 
- auto pos {host.find(':')};
- if (pos != host.npos) {
-  host = host.substr(0, pos);
- }
+ RemovePortFromHostname(host);
 
  for (const auto& site: m_sites) {
   if (std::find(socket.serve_sites.begin(), socket.serve_sites.end(), site.name) != socket.serve_sites.end()) {
-- 
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