louloulibs is directly included, instead of being a submodule

Because this is a nightmare to manage

55 files changed, 5594 insertions, 0 deletions

diff --git a/louloulibs b/louloulibs
deleted file mode 160000
-Subproject 0f3c1183e2bf0941ae2bffd3f31577bce4f3001
diff --git a/louloulibs/CMakeLists.txt b/louloulibs/CMakeLists.txt
new file mode 100644
index 0000000..bf53504
--- /dev/null
+++ b/louloulibs/CMakeLists.txt
@@ -0,0 +1,146 @@
+cmake_minimum_required(VERSION 2.6)
+
+set(${PROJECT_NAME}_VERSION_MAJOR 1)
+set(${PROJECT_NAME}_VERSION_MINOR 0)
+set(${PROJECT_NAME}_VERSION_SUFFIX "~dev")
+
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++1y -pedantic -Wall -Wextra")
+
+# Define a __FILENAME__ macro to get the filename of each file, instead of
+# the full path as in __FILE__
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D__FILENAME__='\"$(subst ${CMAKE_SOURCE_DIR}/,,$(abspath $<))\"'")
+
+#
+## Look for external libraries
+#
+set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules/")
+include(FindEXPAT)
+find_package(EXPAT REQUIRED)
+find_package(ICONV REQUIRED)
+find_package(LIBUUID REQUIRED)
+
+if(WITH_LIBIDN)
+  find_package(LIBIDN REQUIRED)
+elseif(NOT WITHOUT_LIBIDN)
+  find_package(LIBIDN)
+endif()
+
+if(WITH_SYSTEMD)
+  find_package(SYSTEMD REQUIRED)
+elseif(NOT WITHOUT_SYSTEMD)
+  find_package(SYSTEMD)
+endif()
+
+if(WITH_BOTAN)
+  find_package(BOTAN REQUIRED)
+elseif(NOT WITHOUT_BOTAN)
+  find_package(BOTAN)
+endif()
+
+if(WITH_CARES)
+  find_package(CARES REQUIRED)
+elseif(NOT WITHOUT_CARES)
+  find_package(CARES)
+endif()
+
+# To be able to include the config.h file generated by cmake
+include_directories("${CMAKE_CURRENT_BINARY_DIR}")
+include_directories("${CMAKE_CURRENT_SOURCE_DIR}")
+include_directories(${EXPAT_INCLUDE_DIRS})
+include_directories(${ICONV_INCLUDE_DIRS})
+include_directories(${LIBUUID_INCLUDE_DIRS})
+
+set(EXPAT_INCLUDE_DIRS ${EXPAT_INCLUDE_DIRS} PARENT_SCOPE)
+set(ICONV_INCLUDE_DIRS ${ICONV_INCLUDE_DIRS} PARENT_SCOPE)
+set(LIBUUID_INCLUDE_DIRS ${LIBUUID_INCLUDE_DIRS} PARENT_SCOPE)
+
+if(LIBIDN_FOUND)
+  include_directories(${LIBIDN_INCLUDE_DIRS})
+  set(LIBDIN_FOUND ${LIBDIN_FOUND} PARENT_SCOPE)
+  set(LIBDIN_INCLUDE_DIRS ${LIBDIN_INCLUDE_DIRS} PARENT_SCOPE)
+endif()
+
+if(SYSTEMD_FOUND)
+  include_directories(${SYSTEMD_INCLUDE_DIRS})
+  set(SYSTEMD_FOUND ${SYSTEMD_FOUND} PARENT_SCOPE)
+  set(SYSTEMD_INCLUDE_DIRS ${SYSTEMD_INCLUDE_DIRS} PARENT_SCOPE)
+endif()
+
+if(BOTAN_FOUND)
+  include_directories(SYSTEM ${BOTAN_INCLUDE_DIRS})
+  set(BOTAN_FOUND ${BOTAN_FOUND} PARENT_SCOPE)
+  set(BOTAN_INCLUDE_DIRS ${BOTAN_INCLUDE_DIRS} PARENT_SCOPE)
+endif()
+
+if(CARES_FOUND)
+  include_directories(${CARES_INCLUDE_DIRS})
+  set(CARES_FOUND ${CARES_FOUND} PARENT_SCOPE)
+  set(CARES_INCLUDE_DIRS ${CARES_INCLUDE_DIRS} PARENT_SCOPE)
+endif()
+
+set(POLLER_DOCSTRING "Choose the poller between POLL and EPOLL (Linux-only)")
+if(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
+ set(POLLER "EPOLL" CACHE STRING ${POLLER_DOCSTRING})
+else()
+ set(POLLER "POLL" CACHE STRING ${POLLER_DOCSTRING})
+endif()
+if((NOT ${POLLER} MATCHES "POLL") AND
+    (NOT ${POLLER} MATCHES "EPOLL"))
+  message(FATAL_ERROR "POLLER must be either POLL or EPOLL")
+endif()
+
+#
+## utils
+#
+file(GLOB source_utils
+  utils/*.[hc]pp)
+add_library(utils STATIC ${source_utils})
+target_link_libraries(utils ${ICONV_LIBRARIES})
+
+#
+## config
+#
+file(GLOB source_config
+  config/*.[hc]pp)
+add_library(config STATIC ${source_config})
+target_link_libraries(config utils)
+
+#
+## logger
+#
+file(GLOB source_logger
+  logger/*.[hc]pp)
+add_library(logger STATIC ${source_logger})
+target_link_libraries(logger config)
+
+#
+## network
+#
+file(GLOB source_network
+  network/*.[hc]pp)
+add_library(network STATIC ${source_network})
+target_link_libraries(network logger)
+if(BOTAN_FOUND)
+  target_link_libraries(network ${BOTAN_LIBRARIES})
+endif()
+if(CARES_FOUND)
+  target_link_libraries(network ${CARES_LIBRARIES})
+endif()
+
+#
+## xmpplib
+#
+file(GLOB source_xmpplib
+  xmpp/*.[hc]pp)
+add_library(xmpplib STATIC ${source_xmpplib})
+target_link_libraries(xmpplib network utils logger
+  ${EXPAT_LIBRARIES}
+  ${LIBUUID_LIBRARIES})
+if(LIBIDN_FOUND)
+  target_link_libraries(xmpplib ${LIBIDN_LIBRARIES})
+endif()
+if(SYSTEMD_FOUND)
+  target_link_libraries(xmpplib ${SYSTEMD_LIBRARIES})
+endif()
+
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/louloulibs.h.cmake ${CMAKE_BINARY_DIR}/src/louloulibs.h)
diff --git a/louloulibs/cmake/Modules/FindBOTAN.cmake b/louloulibs/cmake/Modules/FindBOTAN.cmake
new file mode 100644
index 0000000..a12bd35
--- /dev/null
+++ b/louloulibs/cmake/Modules/FindBOTAN.cmake
@@ -0,0 +1,35 @@
+# - Find botan
+# Find the botan cryptographic library
+#
+# This module defines the following variables:
+#   BOTAN_FOUND  -  True if library and include directory are found
+# If set to TRUE, the following are also defined:
+#   BOTAN_INCLUDE_DIRS  -  The directory where to find the header file
+#   BOTAN_LIBRARIES  -  Where to find the library file
+#
+# For conveniance, these variables are also set. They have the same values
+# than the variables above.  The user can thus choose his/her prefered way
+# to write them.
+#   BOTAN_LIBRARY
+#   BOTAN_INCLUDE_DIR
+#
+# This file is in the public domain
+
+find_path(BOTAN_INCLUDE_DIRS NAMES botan/botan.h
+  PATH_SUFFIXES botan-1.11
+  DOC "The botan include directory")
+
+find_library(BOTAN_LIBRARIES NAMES botan botan-1.11
+  DOC "The botan library")
+
+# Use some standard module to handle the QUIETLY and REQUIRED arguments, and
+# set BOTAN_FOUND to TRUE if these two variables are set.
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(BOTAN REQUIRED_VARS BOTAN_LIBRARIES BOTAN_INCLUDE_DIRS)
+
+if(BOTAN_FOUND)
+  set(BOTAN_LIBRARY ${BOTAN_LIBRARIES})
+  set(BOTAN_INCLUDE_DIR ${BOTAN_INCLUDE_DIRS})
+endif()
+
+mark_as_advanced(BOTAN_INCLUDE_DIRS BOTAN_LIBRARIES)
diff --git a/louloulibs/cmake/Modules/FindCARES.cmake b/louloulibs/cmake/Modules/FindCARES.cmake
new file mode 100644
index 0000000..c4c757a
--- /dev/null
+++ b/louloulibs/cmake/Modules/FindCARES.cmake
@@ -0,0 +1,37 @@
+# - Find c-ares
+# Find the c-ares library, and more particularly the stringprep header.
+#
+# This module defines the following variables:
+#   CARES_FOUND  -  True if library and include directory are found
+# If set to TRUE, the following are also defined:
+#   CARES_INCLUDE_DIRS  -  The directory where to find the header file
+#   CARES_LIBRARIES  -  Where to find the library file
+#
+# For conveniance, these variables are also set. They have the same values
+# than the variables above.  The user can thus choose his/her prefered way
+# to write them.
+#   CARES_INCLUDE_DIR
+#   CARES_LIBRARY
+#
+# This file is in the public domain
+
+if(NOT CARES_FOUND)
+  find_path(CARES_INCLUDE_DIRS NAMES ares.h
+    DOC "The c-ares include directory")
+
+  find_library(CARES_LIBRARIES NAMES cares
+    DOC "The c-ares library")
+
+  # Use some standard module to handle the QUIETLY and REQUIRED arguments, and
+  # set CARES_FOUND to TRUE if these two variables are set.
+  include(FindPackageHandleStandardArgs)
+  find_package_handle_standard_args(CARES REQUIRED_VARS CARES_LIBRARIES CARES_INCLUDE_DIRS)
+
+  # Compatibility for all the ways of writing these variables
+  if(CARES_FOUND)
+    set(CARES_INCLUDE_DIR ${CARES_INCLUDE_DIRS})
+    set(CARES_LIBRARY ${CARES_LIBRARIES})
+  endif()
+endif()
+
+mark_as_advanced(CARES_INCLUDE_DIRS CARES_LIBRARIES)
diff --git a/louloulibs/cmake/Modules/FindICONV.cmake b/louloulibs/cmake/Modules/FindICONV.cmake
new file mode 100644
index 0000000..7ca173f
--- /dev/null
+++ b/louloulibs/cmake/Modules/FindICONV.cmake
@@ -0,0 +1,60 @@
+# - Find iconv
+# Find the iconv (character set conversion) library
+#
+# This module defines the following variables:
+#   ICONV_FOUND  -  True if library and include directory are found
+# If set to TRUE, the following are also defined:
+#   ICONV_INCLUDE_DIRS  -  The directory where to find the header file
+#   ICONV_LIBRARIES  -  Where to find the library file
+#   ICONV_SECOND_ARGUMENT_IS_CONST  -  The second argument for iconv() is const
+#
+# For conveniance, these variables are also set. They have the same values
+# than the variables above.  The user can thus choose his/her prefered way
+# to write them.
+#   ICONV_LIBRARY
+#   ICONV_INCLUDE_DIR
+#
+# This file is in the public domain
+
+find_path(ICONV_INCLUDE_DIRS NAMES iconv.h
+  DOC "The iconv include directory")
+
+find_library(ICONV_LIBRARIES NAMES iconv libiconv libiconv-2 c
+  DOC "The iconv library")
+
+# Use some standard module to handle the QUIETLY and REQUIRED arguments, and
+# set ICONV_FOUND to TRUE if these two variables are set.
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(Iconv REQUIRED_VARS ICONV_LIBRARIES ICONV_INCLUDE_DIRS)
+
+# Check if the prototype is
+# size_t iconv(iconv_t cd, char** inbuf, size_t* inbytesleft,
+#              char** outbuf, size_t* outbytesleft);
+# or
+# size_t iconv (iconv_t cd, const char** inbuf, size_t* inbytesleft,
+#              char** outbuf, size_t* outbytesleft);
+if(ICONV_FOUND)
+  include(CheckCXXSourceCompiles)
+
+  # Set the parameters needed to compile the following code.
+  set(CMAKE_REQUIRED_INCLUDES ${ICONV_INCLUDE_DIRS})
+  set(CMAKE_REQUIRED_LIBRARIES ${ICONV_LIBRARIES})
+
+ check_cxx_source_compiles("
+   #include <iconv.h>
+   int main(){
+   iconv_t conv = 0;
+   const char* in = 0;
+   size_t ilen = 0;
+   char* out = 0;
+   size_t olen = 0;
+   iconv(conv, &in, &ilen, &out, &olen);
+   return 0;}"
+   ICONV_SECOND_ARGUMENT_IS_CONST)
+
+# Compatibility for all the ways of writing these variables
+  set(ICONV_LIBRARY ${ICONV_LIBRARIES})
+  set(ICONV_INCLUDE_DIR ${ICONV_INCLUDE_DIRS})
+endif()
+
+mark_as_advanced(ICONV_INCLUDE_DIRS ICONV_LIBRARIES ICONV_SECOND_ARGUMENT_IS_CONST)
\ No newline at end of file
diff --git a/louloulibs/cmake/Modules/FindLIBIDN.cmake b/louloulibs/cmake/Modules/FindLIBIDN.cmake
new file mode 100644
index 0000000..611a6a8
--- /dev/null
+++ b/louloulibs/cmake/Modules/FindLIBIDN.cmake
@@ -0,0 +1,41 @@
+# - Find libidn
+# Find the libidn library, and more particularly the stringprep header.
+#
+# This module defines the following variables:
+#   LIBIDN_FOUND  -  True if library and include directory are found
+# If set to TRUE, the following are also defined:
+#   LIBIDN_INCLUDE_DIRS  -  The directory where to find the header file
+#   LIBIDN_LIBRARIES  -  Where to find the library file
+#
+# For conveniance, these variables are also set. They have the same values
+# than the variables above.  The user can thus choose his/her prefered way
+# to write them.
+#   LIBIDN_INCLUDE_DIR
+#   LIBIDN_LIBRARY
+#
+# This file is in the public domain
+
+include(FindPkgConfig)
+pkg_check_modules(LIBIDN libidn)
+
+if(NOT LIBIDN_FOUND)
+  find_path(LIBIDN_INCLUDE_DIRS NAMES stringprep.h
+    DOC "The libidn include directory")
+
+  # The library containing the stringprep module is libidn
+  find_library(LIBIDN_LIBRARIES NAMES idn
+    DOC "The libidn library")
+
+  # Use some standard module to handle the QUIETLY and REQUIRED arguments, and
+  # set LIBIDN_FOUND to TRUE if these two variables are set.
+  include(FindPackageHandleStandardArgs)
+  find_package_handle_standard_args(LIBIDN REQUIRED_VARS LIBIDN_LIBRARIES LIBIDN_INCLUDE_DIRS)
+
+  # Compatibility for all the ways of writing these variables
+  if(LIBIDN_FOUND)
+    set(LIBIDN_INCLUDE_DIR ${LIBIDN_INCLUDE_DIRS})
+    set(LIBIDN_LIBRARY ${LIBIDN_LIBRARIES})
+  endif()
+endif()
+
+mark_as_advanced(LIBIDN_INCLUDE_DIRS LIBIDN_LIBRARIES)
\ No newline at end of file
diff --git a/louloulibs/cmake/Modules/FindLIBUUID.cmake b/louloulibs/cmake/Modules/FindLIBUUID.cmake
new file mode 100644
index 0000000..17d3c42
--- /dev/null
+++ b/louloulibs/cmake/Modules/FindLIBUUID.cmake
@@ -0,0 +1,41 @@
+# - Find libuuid
+# Find the libuuid library
+#
+# This module defines the following variables:
+#   LIBUUID_FOUND  -  True if library and include directory are found
+# If set to TRUE, the following are also defined:
+#   LIBUUID_INCLUDE_DIRS  -  The directory where to find the header file
+#   LIBUUID_LIBRARIES  -  Where to find the library file
+#
+# For conveniance, these variables are also set. They have the same values
+# than the variables above.  The user can thus choose his/her prefered way
+# to write them.
+#   LIBUUID_INCLUDE_DIR
+#   LIBUUID_LIBRARY
+#
+# This file is in the public domain
+
+include(FindPkgConfig)
+pkg_check_modules(LIBUUID uuid)
+
+if(NOT LIBUUID_FOUND)
+  find_path(LIBUUID_INCLUDE_DIRS NAMES uuid.h
+    PATH_SUFFIXES uuid
+    DOC "The libuuid include directory")
+
+  find_library(LIBUUID_LIBRARIES NAMES uuid
+    DOC "The libuuid library")
+
+  # Use some standard module to handle the QUIETLY and REQUIRED arguments, and
+  # set LIBUUID_FOUND to TRUE if these two variables are set.
+  include(FindPackageHandleStandardArgs)
+  find_package_handle_standard_args(LIBUUID REQUIRED_VARS LIBUUID_LIBRARIES LIBUUID_INCLUDE_DIRS)
+
+  # Compatibility for all the ways of writing these variables
+  if(LIBUUID_FOUND)
+    set(LIBUUID_INCLUDE_DIR ${LIBUUID_INCLUDE_DIRS})
+    set(LIBUUID_LIBRARY ${LIBUUID_LIBRARIES})
+  endif()
+endif()
+
+mark_as_advanced(LIBUUID_INCLUDE_DIRS LIBUUID_LIBRARIES)
diff --git a/louloulibs/cmake/Modules/FindSYSTEMD.cmake b/louloulibs/cmake/Modules/FindSYSTEMD.cmake
new file mode 100644
index 0000000..c7decde
--- /dev/null
+++ b/louloulibs/cmake/Modules/FindSYSTEMD.cmake
@@ -0,0 +1,39 @@
+# - Find SystemdDaemon
+# Find the systemd daemon library
+#
+# This module defines the following variables:
+#   SYSTEMD_FOUND  -  True if library and include directory are found
+# If set to TRUE, the following are also defined:
+#   SYSTEMD_INCLUDE_DIRS  -  The directory where to find the header file
+#   SYSTEMD_LIBRARIES  -  Where to find the library file
+#
+# For conveniance, these variables are also set. They have the same values
+# than the variables above.  The user can thus choose his/her prefered way
+# to write them.
+#   SYSTEMD_LIBRARY
+#   SYSTEMD_INCLUDE_DIR
+#
+# This file is in the public domain
+
+include(FindPkgConfig)
+pkg_check_modules(SYSTEMD libsystemd)
+
+if(NOT SYSTEMD_FOUND)
+  find_path(SYSTEMD_INCLUDE_DIRS NAMES systemd/sd-daemon.h
+    DOC "The Systemd include directory")
+
+  find_library(SYSTEMD_LIBRARIES NAMES systemd
+    DOC "The Systemd library")
+
+  # Use some standard module to handle the QUIETLY and REQUIRED arguments, and
+  # set SYSTEMD_FOUND to TRUE if these two variables are set.
+  include(FindPackageHandleStandardArgs)
+  find_package_handle_standard_args(SYSTEMD REQUIRED_VARS SYSTEMD_LIBRARIES SYSTEMD_INCLUDE_DIRS)
+
+  if(SYSTEMD_FOUND)
+    set(SYSTEMD_LIBRARY ${SYSTEMD_LIBRARIES})
+    set(SYSTEMD_INCLUDE_DIR ${SYSTEMD_INCLUDE_DIRS})
+  endif()
+endif()
+
+mark_as_advanced(SYSTEMD_INCLUDE_DIRS SYSTEMD_LIBRARIES)
\ No newline at end of file
diff --git a/louloulibs/config/config.cpp b/louloulibs/config/config.cpp
new file mode 100644
index 0000000..3e016f4
--- /dev/null
+++ b/louloulibs/config/config.cpp
@@ -0,0 +1,122 @@
+#include <config/config.hpp>
+
+#include <iostream>
+#include <sstream>
+
+#include <stdlib.h>
+
+std::string Config::filename{};
+bool Config::file_must_exist = false;
+
+std::string Config::get(const std::string& option, const std::string& def)
+{
+  Config* self = Config::instance().get();
+  auto it = self->values.find(option);
+
+  if (it == self->values.end())
+    return def;
+  return it->second;
+}
+
+int Config::get_int(const std::string& option, const int& def)
+{
+  Config* self = Config::instance().get();
+  std::string res = self->get(option, "");
+  if (!res.empty())
+    return atoi(res.c_str());
+  else
+    return def;
+}
+
+void Config::set(const std::string& option, const std::string& value, bool save)
+{
+  Config* self = Config::instance().get();
+  self->values[option] = value;
+  if (save)
+    {
+      self->save_to_file();
+      self->trigger_configuration_change();
+    }
+}
+
+void Config::connect(t_config_changed_callback callback)
+{
+  Config* self = Config::instance().get();
+  self->callbacks.push_back(callback);
+}
+
+void Config::close()
+{
+  Config* self = Config::instance().get();
+  self->values.clear();
+  Config::instance().reset();
+}
+
+/**
+ * Private methods
+ */
+
+void Config::trigger_configuration_change()
+{
+  std::vector<t_config_changed_callback>::iterator it;
+  for (it = this->callbacks.begin(); it < this->callbacks.end(); ++it)
+      (*it)();
+}
+
+std::unique_ptr<Config>& Config::instance()
+{
+  static std::unique_ptr<Config> instance;
+
+  if (!instance)
+    {
+      instance = std::make_unique<Config>();
+      instance->read_conf();
+    }
+  return instance;
+}
+
+bool Config::read_conf()
+{
+  std::ifstream file;
+  file.open(filename.data());
+  if (!file.is_open())
+    {
+      if (Config::file_must_exist)
+        {
+          perror(("Error while opening file " + filename + " for reading.").c_str());
+          file.exceptions(std::ifstream::failbit);
+        }
+      return false;
+    }
+
+  std::string line;
+  size_t pos;
+  std::string option;
+  std::string value;
+  while (file.good())
+    {
+      std::getline(file, line);
+      if (line == "" || line[0] == '#')
+        continue ;
+      pos = line.find('=');
+      if (pos == std::string::npos)
+        continue ;
+      option = line.substr(0, pos);
+      value = line.substr(pos+1);
+      this->values[option] = value;
+    }
+  return true;
+}
+
+void Config::save_to_file() const
+{
+  std::ofstream file(this->filename.data());
+  if (file.fail())
+    {
+      std::cerr << "Could not save config file." << std::endl;
+      return ;
+    }
+  for (auto& it: this->values)
+    file << it.first << "=" << it.second << std::endl;
+  file.close();
+}
diff --git a/louloulibs/config/config.hpp b/louloulibs/config/config.hpp
new file mode 100644
index 0000000..e070816
--- /dev/null
+++ b/louloulibs/config/config.hpp
@@ -0,0 +1,103 @@
+/**
+ * Read the config file and save all the values in a map.
+ * Also, a singleton.
+ *
+ * Use Config::filename = "bla" to set the filename you want to use.
+ *
+ * If you want to exit if the file does not exist when it is open for
+ * reading, set Config::file_must_exist = true.
+ *
+ * Config::get() can the be used to access the values in the conf.
+ *
+ * Use Config::close() when you're done getting/setting value. This will
+ * save the config into the file.
+ */
+
+#ifndef CONFIG_INCLUDED
+# define CONFIG_INCLUDED
+
+#include <functional>
+#include <fstream>
+#include <memory>
+#include <vector>
+#include <string>
+#include <map>
+
+typedef std::function<void()> t_config_changed_callback;
+
+class Config
+{
+public:
+  Config(){};
+  ~Config(){};
+  /**
+   * returns a value from the config. If it doesn’t exist, use
+   * the second argument as the default.
+   * @param option The option we want
+   * @param def The default value in case the option does not exist
+   */
+  static std::string get(const std::string&, const std::string&);
+  /**
+   * returns a value from the config. If it doesn’t exist, use
+   * the second argument as the default.
+   * @param option The option we want
+   * @param def The default value in case the option does not exist
+   */
+  static int get_int(const std::string&, const int&);
+  /**
+   * Set a value for the given option. And write all the config
+   * in the file from which it was read if boolean is set.
+   * @param option The option to set
+   * @param value The value to use
+   * @param save if true, save the config file
+   */
+  static void set(const std::string&, const std::string&, bool save = false);
+  /**
+   * Adds a function to a list. This function will be called whenever a
+   * configuration change occurs.
+   */
+  static void connect(t_config_changed_callback);
+  /**
+   * Close the config file, saving it to the file is save == true.
+   */
+  static void close();
+
+  /**
+   * Set the value of the filename to use, before calling any method.
+   */
+  static std::string filename;
+  /**
+   * Set to true if you want an exception to be raised if the file does not
+   * exist when reading it.
+   */
+  static bool file_must_exist;
+
+private:
+  /**
+   * Get the singleton instance
+   */
+  static std::unique_ptr<Config>& instance();
+  /**
+   * Read the configuration file at the given path.
+   */
+  bool read_conf();
+  /**
+   * Write all the config values into the configuration file
+   */
+  void save_to_file() const;
+  /**
+   * Call all the callbacks previously registered using connect().
+   * This is used to notify any class that a configuration change occured.
+   */
+  void trigger_configuration_change();
+
+  std::map<std::string, std::string> values;
+  std::vector<t_config_changed_callback> callbacks;
+
+  Config(const Config&) = delete;
+  Config& operator=(const Config&) = delete;
+  Config(Config&&) = delete;
+  Config& operator=(Config&&) = delete;
+};
+
+#endif // CONFIG_INCLUDED
diff --git a/louloulibs/logger/logger.cpp b/louloulibs/logger/logger.cpp
new file mode 100644
index 0000000..7336579
--- /dev/null
+++ b/louloulibs/logger/logger.cpp
@@ -0,0 +1,38 @@
+#include <logger/logger.hpp>
+#include <config/config.hpp>
+
+Logger::Logger(const int log_level):
+  log_level(log_level),
+  stream(std::cout.rdbuf())
+{
+}
+
+Logger::Logger(const int log_level, const std::string& log_file):
+  log_level(log_level),
+  ofstream(log_file.data(), std::ios_base::app),
+  stream(ofstream.rdbuf())
+{
+}
+
+std::unique_ptr<Logger>& Logger::instance()
+{
+  static std::unique_ptr<Logger> instance;
+
+  if (!instance)
+    {
+      const std::string log_file = Config::get("log_file", "");
+      const int log_level = Config::get_int("log_level", 0);
+      if (log_file.empty())
+        instance = std::make_unique<Logger>(log_level);
+      else
+        instance = std::make_unique<Logger>(log_level, log_file);
+    }
+  return instance;
+}
+
+std::ostream& Logger::get_stream(const int lvl)
+{
+  if (lvl >= this->log_level)
+    return this->stream;
+  return this->null_stream;
+}
diff --git a/louloulibs/logger/logger.hpp b/louloulibs/logger/logger.hpp
new file mode 100644
index 0000000..78b1278
--- /dev/null
+++ b/louloulibs/logger/logger.hpp
@@ -0,0 +1,80 @@
+#ifndef LOGGER_INCLUDED
+# define LOGGER_INCLUDED
+
+/**
+ * Singleton used in logger macros to write into files or stdout, with
+ * various levels of severity.
+ * Only the macros should be used.
+ * @class Logger
+ */
+
+#include <memory>
+#include <iostream>
+#include <fstream>
+
+#define debug_lvl 0
+#define info_lvl 1
+#define warning_lvl 2
+#define error_lvl 3
+
+#include "louloulibs.h"
+#ifdef SYSTEMD_FOUND
+# include <systemd/sd-daemon.h>
+#else
+# define SD_DEBUG    "[DEBUG]: "
+# define SD_INFO     "[INFO]: "
+# define SD_WARNING  "[WARNING]: "
+# define SD_ERR      "[ERROR]: "
+#endif
+
+// Macro defined to get the filename instead of the full path. But if it is
+// not properly defined by the build system, we fallback to __FILE__
+#ifndef __FILENAME__
+# define __FILENAME__ __FILE__
+#endif
+
+#define WHERE\
+  __FILENAME__ << ":" << __LINE__
+
+#define log_debug(text)\
+  Logger::instance()->get_stream(debug_lvl) << SD_DEBUG << WHERE << ":\t" << text << std::endl;
+
+#define log_info(text)\
+  Logger::instance()->get_stream(info_lvl) << SD_INFO << WHERE << ":\t" << text << std::endl;
+
+#define log_warning(text)\
+  Logger::instance()->get_stream(warning_lvl) << SD_WARNING << WHERE << ":\t" << text << std::endl;
+
+#define log_error(text)\
+  Logger::instance()->get_stream(error_lvl) << SD_ERR << WHERE << ":\t" << text << std::endl;
+
+/**
+ * Juste a structure representing a stream doing nothing with its input.
+ */
+class nullstream: public std::ostream
+{
+public:
+  nullstream():
+    std::ostream(0)
+  { }
+};
+
+class Logger
+{
+public:
+  static std::unique_ptr<Logger>& instance();
+  std::ostream& get_stream(const int);
+  Logger(const int log_level, const std::string& log_file);
+  Logger(const int log_level);
+
+private:
+  Logger(const Logger&);
+  Logger& operator=(const Logger&);
+
+  const int log_level;
+  std::ofstream ofstream;
+  nullstream null_stream;
+  std::ostream stream;
+};
+
+#endif // LOGGER_INCLUDED
diff --git a/louloulibs/louloulibs.h.cmake b/louloulibs/louloulibs.h.cmake
new file mode 100644
index 0000000..707d3fe
--- /dev/null
+++ b/louloulibs/louloulibs.h.cmake
@@ -0,0 +1,8 @@
+#define SYSTEM_NAME "${CMAKE_SYSTEM}"
+#cmakedefine ICONV_SECOND_ARGUMENT_IS_CONST
+#cmakedefine LIBIDN_FOUND
+#cmakedefine SYSTEMD_FOUND
+#cmakedefine POLLER ${POLLER}
+#cmakedefine BOTAN_FOUND
+#cmakedefine CARES_FOUND
+#cmakedefine SOFTWARE_VERSION "${SOFTWARE_VERSION}"
\ No newline at end of file
diff --git a/louloulibs/network/dns_handler.cpp b/louloulibs/network/dns_handler.cpp
new file mode 100644
index 0000000..ec53683
--- /dev/null
+++ b/louloulibs/network/dns_handler.cpp
@@ -0,0 +1,112 @@
+#include <louloulibs.h>
+#ifdef CARES_FOUND
+
+#include <network/dns_socket_handler.hpp>
+#include <network/tcp_socket_handler.hpp>
+#include <network/dns_handler.hpp>
+#include <network/poller.hpp>
+
+#include <algorithm>
+#include <stdexcept>
+
+DNSHandler DNSHandler::instance;
+
+using namespace std::string_literals;
+
+void on_hostname4_resolved(void* arg, int status, int, struct hostent* hostent)
+{
+  TCPSocketHandler* socket_handler = static_cast<TCPSocketHandler*>(arg);
+  socket_handler->on_hostname4_resolved(status, hostent);
+}
+
+void on_hostname6_resolved(void* arg, int status, int, struct hostent* hostent)
+{
+  TCPSocketHandler* socket_handler = static_cast<TCPSocketHandler*>(arg);
+  socket_handler->on_hostname6_resolved(status, hostent);
+}
+
+DNSHandler::DNSHandler()
+{
+  int ares_error;
+  if ((ares_error = ::ares_library_init(ARES_LIB_INIT_ALL)) != 0)
+    throw std::runtime_error("Failed to initialize c-ares lib: "s + ares_strerror(ares_error));
+  if ((ares_error = ::ares_init(&this->channel)) != ARES_SUCCESS)
+    throw std::runtime_error("Failed to initialize c-ares channel: "s + ares_strerror(ares_error));
+}
+
+ares_channel& DNSHandler::get_channel()
+{
+  return this->channel;
+}
+
+void DNSHandler::destroy()
+{
+  this->socket_handlers.clear();
+  ::ares_destroy(this->channel);
+  ::ares_library_cleanup();
+}
+
+void DNSHandler::gethostbyname(const std::string& name,
+                               TCPSocketHandler* socket_handler, int family)
+{
+  socket_handler->free_cares_addrinfo();
+  if (family == AF_INET)
+    ::ares_gethostbyname(this->channel, name.data(), family,
+                         &::on_hostname4_resolved, socket_handler);
+  else
+    ::ares_gethostbyname(this->channel, name.data(), family,
+                         &::on_hostname6_resolved, socket_handler);
+}
+
+void DNSHandler::watch_dns_sockets(std::shared_ptr<Poller>& poller)
+{
+  fd_set readers;
+  fd_set writers;
+
+  FD_ZERO(&readers);
+  FD_ZERO(&writers);
+
+  int ndfs = ::ares_fds(this->channel, &readers, &writers);
+  // For each existing DNS socket, see if we are still supposed to watch it,
+  // if not then erase it
+  this->socket_handlers.erase(
+      std::remove_if(this->socket_handlers.begin(), this->socket_handlers.end(),
+                     [&readers](const auto& dns_socket)
+                     {
+                       return !FD_ISSET(dns_socket->get_socket(), &readers);
+                     }),
+      this->socket_handlers.end());
+
+  for (auto i = 0; i < ndfs; ++i)
+    {
+      bool read = FD_ISSET(i, &readers);
+      bool write = FD_ISSET(i, &writers);
+      // Look for the DNSSocketHandler with this fd
+      auto it = std::find_if(this->socket_handlers.begin(),
+                             this->socket_handlers.end(),
+                             [i](const auto& socket_handler)
+                             {
+        return i == socket_handler->get_socket();
+      });
+      if (!read && !write)      // No need to read or write to it
+        { // If found, erase it and stop watching it because it is not
+          // needed anymore
+          if (it != this->socket_handlers.end())
+            // The socket destructor removes it from the poller
+            this->socket_handlers.erase(it);
+        }
+      else            // We need to write and/or read to it
+        { // If not found, create it because we need to watch it
+          if (it == this->socket_handlers.end())
+            {
+              this->socket_handlers.emplace_front(std::make_unique<DNSSocketHandler>(poller, i));
+              it = this->socket_handlers.begin();
+            }
+          poller->add_socket_handler(it->get());
+          if (write)
+            poller->watch_send_events(it->get());
+        }
+    }
+}
+
+#endif /* CARES_FOUND */
diff --git a/louloulibs/network/dns_handler.hpp b/louloulibs/network/dns_handler.hpp
new file mode 100644
index 0000000..a515f52
--- /dev/null
+++ b/louloulibs/network/dns_handler.hpp
@@ -0,0 +1,62 @@
+#ifndef DNS_HANDLER_HPP_INCLUDED
+#define DNS_HANDLER_HPP_INCLUDED
+
+#include <louloulibs.h>
+#ifdef CARES_FOUND
+
+class TCPSocketHandler;
+class Poller;
+class DNSSocketHandler;
+
+# include <ares.h>
+# include <memory>
+# include <string>
+# include <list>
+
+void on_hostname4_resolved(void* arg, int status, int, struct hostent* hostent);
+void on_hostname6_resolved(void* arg, int status, int, struct hostent* hostent);
+
+/**
+ * Class managing DNS resolution.  It should only be statically instanciated
+ * once in SocketHandler.  It manages ares channel and calls various
+ * functions of that library.
+ */
+
+class DNSHandler
+{
+public:
+  DNSHandler();
+  ~DNSHandler() = default;
+  void gethostbyname(const std::string& name, TCPSocketHandler* socket_handler,
+                     int family);
+  /**
+   * Call ares_fds to know what fd needs to be watched by the poller, create
+   * or destroy DNSSocketHandlers depending on the result.
+   */
+  void watch_dns_sockets(std::shared_ptr<Poller>& poller);
+  /**
+   * Destroy and stop watching all the DNS sockets. Then de-init the channel
+   * and library.
+   */
+  void destroy();
+  ares_channel& get_channel();
+
+  static DNSHandler instance;
+
+private:
+  /**
+   * The list of sockets that needs to be watched, according to the last
+   * call to ares_fds.  DNSSocketHandlers are added to it or removed from it
+   * in the watch_dns_sockets() method
+   */
+  std::list<std::unique_ptr<DNSSocketHandler>> socket_handlers;
+  ares_channel channel;
+
+  DNSHandler(const DNSHandler&) = delete;
+  DNSHandler(DNSHandler&&) = delete;
+  DNSHandler& operator=(const DNSHandler&) = delete;
+  DNSHandler& operator=(DNSHandler&&) = delete;
+};
+
+#endif /* CARES_FOUND */
+#endif /* DNS_HANDLER_HPP_INCLUDED */
diff --git a/louloulibs/network/dns_socket_handler.cpp b/louloulibs/network/dns_socket_handler.cpp
new file mode 100644
index 0000000..124c9b2
--- /dev/null
+++ b/louloulibs/network/dns_socket_handler.cpp
@@ -0,0 +1,45 @@
+#include <louloulibs.h>
+#ifdef CARES_FOUND
+
+#include <network/dns_socket_handler.hpp>
+#include <network/dns_handler.hpp>
+#include <network/poller.hpp>
+
+#include <ares.h>
+
+DNSSocketHandler::DNSSocketHandler(std::shared_ptr<Poller> poller,
+                                   const socket_t socket):
+  SocketHandler(poller, socket)
+{
+}
+
+DNSSocketHandler::~DNSSocketHandler()
+{
+}
+
+void DNSSocketHandler::connect()
+{
+}
+
+void DNSSocketHandler::on_recv()
+{
+  // always stop watching send and read events. We will re-watch them if the
+  // next call to ares_fds tell us to
+  this->poller->remove_socket_handler(this->socket);
+  ::ares_process_fd(DNSHandler::instance.get_channel(), this->socket, ARES_SOCKET_BAD);
+}
+
+void DNSSocketHandler::on_send()
+{
+  // always stop watching send and read events. We will re-watch them if the
+  // next call to ares_fds tell us to
+  this->poller->remove_socket_handler(this->socket);
+  ::ares_process_fd(DNSHandler::instance.get_channel(), ARES_SOCKET_BAD, this->socket);
+}
+
+bool DNSSocketHandler::is_connected() const
+{
+  return true;
+}
+
+#endif /* CARES_FOUND */
diff --git a/louloulibs/network/dns_socket_handler.hpp b/louloulibs/network/dns_socket_handler.hpp
new file mode 100644
index 0000000..ad119e1
--- /dev/null
+++ b/louloulibs/network/dns_socket_handler.hpp
@@ -0,0 +1,46 @@
+#ifndef DNS_SOCKET_HANDLER_HPP
+# define DNS_SOCKET_HANDLER_HPP
+
+#include <louloulibs.h>
+#ifdef CARES_FOUND
+
+#include <network/socket_handler.hpp>
+#include <ares.h>
+
+/**
+ * Manage a socket returned by ares_fds. We do not create, open or close the
+ * socket ourself: this is done by c-ares.  We just call ares_process_fd()
+ * with the correct parameters, depending on what can be done on that socket
+ * (Poller reported it to be writable or readeable)
+ */
+
+class DNSSocketHandler: public SocketHandler
+{
+public:
+  explicit DNSSocketHandler(std::shared_ptr<Poller> poller, const socket_t socket);
+  ~DNSSocketHandler();
+  /**
+   * Just call dns_process_fd, c-ares will do its work of send()ing or
+   * recv()ing the data it wants on that socket.
+   */
+  void on_recv() override final;
+  void on_send() override final;
+  /**
+   * Do nothing, because we are always considered to be connected, since the
+   * connection is done by c-ares and not by us.
+   */
+  void connect() override final;
+  /**
+   * Always true, see the comment for connect()
+   */
+  bool is_connected() const override final;
+
+private:
+  DNSSocketHandler(const DNSSocketHandler&) = delete;
+  DNSSocketHandler(DNSSocketHandler&&) = delete;
+  DNSSocketHandler& operator=(const DNSSocketHandler&) = delete;
+  DNSSocketHandler& operator=(DNSSocketHandler&&) = delete;
+};
+
+#endif // CARES_FOUND
+#endif // DNS_SOCKET_HANDLER_HPP
diff --git a/louloulibs/network/poller.cpp b/louloulibs/network/poller.cpp
new file mode 100644
index 0000000..329e1c8
--- /dev/null
+++ b/louloulibs/network/poller.cpp
@@ -0,0 +1,225 @@
+#include <network/poller.hpp>
+#include <logger/logger.hpp>
+#include <utils/timed_events.hpp>
+
+#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
+#include <signal.h>
+
+#include <cstring>
+#include <iostream>
+#include <stdexcept>
+
+Poller::Poller()
+{
+#if POLLER == POLL
+  this->nfds = 0;
+#elif POLLER == EPOLL
+  this->epfd = ::epoll_create1(0);
+  if (this->epfd == -1)
+    {
+      log_error("epoll failed: " << strerror(errno));
+      throw std::runtime_error("Could not create epoll instance");
+    }
+#endif
+}
+
+Poller::~Poller()
+{
+}
+
+void Poller::add_socket_handler(SocketHandler* socket_handler)
+{
+  // Don't do anything if the socket is already managed
+  const auto it = this->socket_handlers.find(socket_handler->get_socket());
+  if (it != this->socket_handlers.end())
+    return ;
+
+  this->socket_handlers.emplace(socket_handler->get_socket(), socket_handler);
+
+  // We always watch all sockets for receive events
+#if POLLER == POLL
+  this->fds[this->nfds].fd = socket_handler->get_socket();
+  this->fds[this->nfds].events = POLLIN;
+  this->nfds++;
+#endif
+#if POLLER == EPOLL
+  struct epoll_event event = {EPOLLIN, {socket_handler}};
+  const int res = ::epoll_ctl(this->epfd, EPOLL_CTL_ADD, socket_handler->get_socket(), &event);
+  if (res == -1)
+    {
+      log_error("epoll_ctl failed: " << strerror(errno));
+      throw std::runtime_error("Could not add socket to epoll");
+    }
+#endif
+}
+
+void Poller::remove_socket_handler(const socket_t socket)
+{
+  const auto it = this->socket_handlers.find(socket);
+  if (it == this->socket_handlers.end())
+    throw std::runtime_error("Trying to remove a SocketHandler that is not managed");
+  this->socket_handlers.erase(it);
+
+#if POLLER == POLL
+  for (size_t i = 0; i < this->nfds; i++)
+    {
+      if (this->fds[i].fd == socket)
+        {
+          // Move all subsequent pollfd by one on the left, erasing the
+          // value of the one we remove
+          for (size_t j = i; j < this->nfds - 1; ++j)
+            {
+              this->fds[j].fd = this->fds[j+1].fd;
+              this->fds[j].events= this->fds[j+1].events;
+            }
+          this->nfds--;
+        }
+    }
+#elif POLLER == EPOLL
+  const int res = ::epoll_ctl(this->epfd, EPOLL_CTL_DEL, socket, nullptr);
+  if (res == -1)
+    {
+      log_error("epoll_ctl failed: " << strerror(errno));
+      throw std::runtime_error("Could not remove socket from epoll");
+    }
+#endif
+}
+
+void Poller::watch_send_events(SocketHandler* socket_handler)
+{
+#if POLLER == POLL
+  for (size_t i = 0; i <= this->nfds; ++i)
+    {
+      if (this->fds[i].fd == socket_handler->get_socket())
+        {
+          this->fds[i].events = POLLIN|POLLOUT;
+          return;
+        }
+    }
+  throw std::runtime_error("Cannot watch a non-registered socket for send events");
+#elif POLLER == EPOLL
+  struct epoll_event event = {EPOLLIN|EPOLLOUT, {socket_handler}};
+  const int res = ::epoll_ctl(this->epfd, EPOLL_CTL_MOD, socket_handler->get_socket(), &event);
+  if (res == -1)
+    {
+      log_error("epoll_ctl failed: " << strerror(errno));
+      throw std::runtime_error("Could not modify socket flags in epoll");
+    }
+#endif
+}
+
+void Poller::stop_watching_send_events(SocketHandler* socket_handler)
+{
+#if POLLER == POLL
+  for (size_t i = 0; i <= this->nfds; ++i)
+    {
+      if (this->fds[i].fd == socket_handler->get_socket())
+        {
+          this->fds[i].events = POLLIN;
+          return;
+        }
+    }
+  throw std::runtime_error("Cannot watch a non-registered socket for send events");
+#elif POLLER == EPOLL
+  struct epoll_event event = {EPOLLIN, {socket_handler}};
+  const int res = ::epoll_ctl(this->epfd, EPOLL_CTL_MOD, socket_handler->get_socket(), &event);
+  if (res == -1)
+    {
+      log_error("epoll_ctl failed: " << strerror(errno));
+      throw std::runtime_error("Could not modify socket flags in epoll");
+    }
+#endif
+}
+
+int Poller::poll(const std::chrono::milliseconds& timeout)
+{
+  if (this->socket_handlers.empty() && timeout == utils::no_timeout)
+    return -1;
+#if POLLER == POLL
+  // Convert our nice timeout into this ugly struct
+  struct timespec timeout_ts;
+  struct timespec* timeout_tsp;
+  if (timeout > 0s)
+    {
+      auto seconds = std::chrono::duration_cast<std::chrono::seconds>(timeout);
+      timeout_ts.tv_sec = seconds.count();
+      timeout_ts.tv_nsec = std::chrono::duration_cast<std::chrono::nanoseconds>(timeout - seconds).count();
+      timeout_tsp = &timeout_ts;
+    }
+  else
+    timeout_tsp = nullptr;
+
+  // Unblock all signals, only during the ppoll call
+  sigset_t empty_signal_set;
+  sigemptyset(&empty_signal_set);
+  int nb_events = ::ppoll(this->fds, this->nfds, timeout_tsp,
+                          &empty_signal_set);
+  if (nb_events < 0)
+    {
+      if (errno == EINTR)
+        return true;
+      log_error("poll failed: " << strerror(errno));
+      throw std::runtime_error("Poll failed");
+    }
+  // We cannot possibly have more ready events than the number of fds we are
+  // watching
+  assert(static_cast<unsigned int>(nb_events) <= this->nfds);
+  for (size_t i = 0; i <= this->nfds && nb_events != 0; ++i)
+    {
+      if (this->fds[i].revents == 0)
+        continue;
+      else if (this->fds[i].revents & POLLIN)
+        {
+          auto socket_handler = this->socket_handlers.at(this->fds[i].fd);
+          socket_handler->on_recv();
+          nb_events--;
+        }
+      else if (this->fds[i].revents & POLLOUT)
+        {
+          auto socket_handler = this->socket_handlers.at(this->fds[i].fd);
+          if (socket_handler->is_connected())
+            socket_handler->on_send();
+          else
+            socket_handler->connect();
+          nb_events--;
+        }
+    }
+  return 1;
+#elif POLLER == EPOLL
+  static const size_t max_events = 12;
+  struct epoll_event revents[max_events];
+  // Unblock all signals, only during the epoll_pwait call
+  sigset_t empty_signal_set;
+  sigemptyset(&empty_signal_set);
+  const int nb_events = ::epoll_pwait(this->epfd, revents, max_events, timeout.count(),
+                                      &empty_signal_set);
+  if (nb_events == -1)
+    {
+      if (errno == EINTR)
+        return 0;
+      log_error("epoll wait: " << strerror(errno));
+      throw std::runtime_error("Epoll_wait failed");
+    }
+  for (int i = 0; i < nb_events; ++i)
+    {
+      auto socket_handler = static_cast<SocketHandler*>(revents[i].data.ptr);
+      if (revents[i].events & EPOLLIN)
+        socket_handler->on_recv();
+      else if (revents[i].events & EPOLLOUT)
+        {
+          if (socket_handler->is_connected())
+            socket_handler->on_send();
+          else
+            socket_handler->connect();
+        }
+    }
+  return nb_events;
+#endif
+}
+
+size_t Poller::size() const
+{
+  return this->socket_handlers.size();
+}
diff --git a/louloulibs/network/poller.hpp b/louloulibs/network/poller.hpp
new file mode 100644
index 0000000..de0cb48
--- /dev/null
+++ b/louloulibs/network/poller.hpp
@@ -0,0 +1,95 @@
+#ifndef POLLER_INCLUDED
+# define POLLER_INCLUDED
+
+#include <network/socket_handler.hpp>
+
+#include <unordered_map>
+#include <memory>
+#include <chrono>
+
+#define POLL 1
+#define EPOLL 2
+#define KQUEUE 3
+#include <louloulibs.h>
+#ifndef POLLER
+ #define POLLER POLL
+#endif
+
+#if POLLER == POLL
+ #include <poll.h>
+ #define MAX_POLL_FD_NUMBER 4096
+#elif POLLER == EPOLL
+  #include <sys/epoll.h>
+#else
+  #error Invalid POLLER value
+#endif
+
+/**
+ * We pass some SocketHandlers to this Poller, which uses
+ * poll/epoll/kqueue/select etc to wait for events on these SocketHandlers,
+ * and call the callbacks when event occurs.
+ *
+ * TODO: support these pollers:
+ * - kqueue(2)
+ */
+
+class Poller
+{
+public:
+  explicit Poller();
+  ~Poller();
+  /**
+   * Add a SocketHandler to be monitored by this Poller. All receive events
+   * are always automatically watched.
+   */
+  void add_socket_handler(SocketHandler* socket_handler);
+  /**
+   * Remove (and stop managing) a SocketHandler, designated by the given socket_t.
+   */
+  void remove_socket_handler(const socket_t socket);
+  /**
+   * Signal the poller that he needs to watch for send events for the given
+   * SocketHandler.
+   */
+  void watch_send_events(SocketHandler* socket_handler);
+  /**
+   * Signal the poller that he needs to stop watching for send events for
+   * this SocketHandler.
+   */
+  void stop_watching_send_events(SocketHandler* socket_handler);
+  /**
+   * Wait for all watched events, and call the SocketHandlers' callbacks
+   * when one is ready.  Returns if nothing happened before the provided
+   * timeout.  If the timeout is 0, it waits forever.  If there is no
+   * watched event, returns -1 immediately, ignoring the timeout value.
+   * Otherwise, returns the number of event handled. If 0 is returned this
+   * means that we were interrupted by a signal, or the timeout occured.
+   */
+  int poll(const std::chrono::milliseconds& timeout);
+  /**
+   * Returns the number of SocketHandlers managed by the poller.
+   */
+  size_t size() const;
+
+private:
+  /**
+   * A "list" of all the SocketHandlers that we manage, indexed by socket,
+   * because that's what is returned by select/poll/etc when an event
+   * occures.
+   */
+  std::unordered_map<socket_t, SocketHandler*> socket_handlers;
+
+#if POLLER == POLL
+  struct pollfd fds[MAX_POLL_FD_NUMBER];
+  nfds_t nfds;
+#elif POLLER == EPOLL
+  int epfd;
+#endif
+
+  Poller(const Poller&) = delete;
+  Poller(Poller&&) = delete;
+  Poller& operator=(const Poller&) = delete;
+  Poller& operator=(Poller&&) = delete;
+};
+
+#endif // POLLER_INCLUDED
diff --git a/louloulibs/network/socket_handler.hpp b/louloulibs/network/socket_handler.hpp
new file mode 100644
index 0000000..d01ac5d
--- /dev/null
+++ b/louloulibs/network/socket_handler.hpp
@@ -0,0 +1,45 @@
+#ifndef SOCKET_HANDLER_HPP
+# define SOCKET_HANDLER_HPP
+
+#include <louloulibs.h>
+#include <memory>
+
+class Poller;
+
+typedef int socket_t;
+
+class SocketHandler
+{
+public:
+  explicit SocketHandler(std::shared_ptr<Poller> poller, const socket_t socket):
+    poller(poller),
+    socket(socket)
+  {}
+  virtual ~SocketHandler() {}
+  virtual void on_recv() = 0;
+  virtual void on_send() = 0;
+  virtual void connect() = 0;
+  virtual bool is_connected() const = 0;
+
+  socket_t get_socket() const
+  { return this->socket; }
+
+protected:
+  /**
+   * A pointer to the poller that manages us, because we need to communicate
+   * with it.
+   */
+  std::shared_ptr<Poller> poller;
+  /**
+   * The handled socket.
+   */
+  socket_t socket;
+
+private:
+  SocketHandler(const SocketHandler&) = delete;
+  SocketHandler(SocketHandler&&) = delete;
+  SocketHandler& operator=(const SocketHandler&) = delete;
+  SocketHandler& operator=(SocketHandler&&) = delete;
+};
+
+#endif // SOCKET_HANDLER_HPP
diff --git a/louloulibs/network/tcp_socket_handler.cpp b/louloulibs/network/tcp_socket_handler.cpp
new file mode 100644
index 0000000..f647b86
--- /dev/null
+++ b/louloulibs/network/tcp_socket_handler.cpp
@@ -0,0 +1,590 @@
+#include <network/tcp_socket_handler.hpp>
+#include <network/dns_handler.hpp>
+
+#include <utils/timed_events.hpp>
+#include <utils/scopeguard.hpp>
+#include <network/poller.hpp>
+
+#include <logger/logger.hpp>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <stdexcept>
+#include <unistd.h>
+#include <errno.h>
+#include <netdb.h>
+#include <cstring>
+#include <fcntl.h>
+
+#include <iostream>
+
+#ifdef BOTAN_FOUND
+# include <botan/hex.h>
+
+Botan::AutoSeeded_RNG TCPSocketHandler::rng;
+Permissive_Credentials_Manager TCPSocketHandler::credential_manager;
+Botan::TLS::Policy TCPSocketHandler::policy;
+Botan::TLS::Session_Manager_In_Memory TCPSocketHandler::session_manager(TCPSocketHandler::rng);
+
+#endif
+
+#ifndef UIO_FASTIOV
+# define UIO_FASTIOV 8
+#endif
+
+using namespace std::string_literals;
+using namespace std::chrono_literals;
+
+namespace ph = std::placeholders;
+
+TCPSocketHandler::TCPSocketHandler(std::shared_ptr<Poller> poller):
+  SocketHandler(poller, -1),
+  use_tls(false),
+  connected(false),
+  connecting(false)
+#ifdef CARES_FOUND
+  ,resolving(false),
+  resolved(false),
+  resolved4(false),
+  resolved6(false),
+  cares_addrinfo(nullptr),
+  cares_error()
+#endif
+{}
+
+TCPSocketHandler::~TCPSocketHandler()
+{
+#ifdef CARES_FOUND
+  this->free_cares_addrinfo();
+#endif
+}
+
+void TCPSocketHandler::init_socket(const struct addrinfo* rp)
+{
+  if ((this->socket = ::socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol)) == -1)
+    throw std::runtime_error("Could not create socket: "s + strerror(errno));
+  int optval = 1;
+  if (::setsockopt(this->socket, SOL_SOCKET, SO_KEEPALIVE, &optval, sizeof(optval)) == -1)
+    log_warning("Failed to enable TCP keepalive on socket: " << strerror(errno));
+  // Set the socket on non-blocking mode.  This is useful to receive a EAGAIN
+  // error when connect() would block, to not block the whole process if a
+  // remote is not responsive.
+  const int existing_flags = ::fcntl(this->socket, F_GETFL, 0);
+  if ((existing_flags == -1) ||
+      (::fcntl(this->socket, F_SETFL, existing_flags | O_NONBLOCK) == -1))
+    throw std::runtime_error("Could not initialize socket: "s + strerror(errno));
+}
+
+void TCPSocketHandler::connect(const std::string& address, const std::string& port, const bool tls)
+{
+  this->address = address;
+  this->port = port;
+  this->use_tls = tls;
+
+  utils::ScopeGuard sg;
+
+  struct addrinfo* addr_res;
+
+  if (!this->connecting)
+    {
+      // Get the addrinfo from getaddrinfo (or ares_gethostbyname), only if
+      // this is the first call of this function.
+#ifdef CARES_FOUND
+      if (!this->resolved)
+        {
+          log_info("Trying to connect to " << address << ":" << port);
+          // Start the asynchronous process of resolving the hostname. Once
+          // the addresses have been found and `resolved` has been set to true
+          // (but connecting will still be false), TCPSocketHandler::connect()
+          // needs to be called, again.
+          this->resolving = true;
+          DNSHandler::instance.gethostbyname(address, this, AF_INET6);
+          DNSHandler::instance.gethostbyname(address, this, AF_INET);
+          return;
+        }
+      else
+        {
+          // The c-ares resolved the hostname and the available addresses
+          // where saved in the cares_addrinfo linked list. Now, just use
+          // this list to try to connect.
+          addr_res = this->cares_addrinfo;
+          if (!addr_res)
+            {
+              this->close();
+              this->on_connection_failed(this->cares_error);
+              return ;
+            }
+        }
+#else
+      log_info("Trying to connect to " << address << ":" << port);
+      struct addrinfo hints;
+      memset(&hints, 0, sizeof(struct addrinfo));
+      hints.ai_flags = 0;
+      hints.ai_family = AF_UNSPEC;
+      hints.ai_socktype = SOCK_STREAM;
+      hints.ai_protocol = 0;
+
+      const int res = ::getaddrinfo(address.c_str(), port.c_str(), &hints, &addr_res);
+
+      if (res != 0)
+        {
+          log_warning("getaddrinfo failed: "s + gai_strerror(res));
+          this->close();
+          this->on_connection_failed(gai_strerror(res));
+          return ;
+        }
+      // Make sure the alloced structure is always freed at the end of the
+      // function
+      sg.add_callback([&addr_res](){ freeaddrinfo(addr_res); });
+#endif
+    }
+  else
+    { // This function is called again, use the saved addrinfo structure,
+      // instead of re-doing the whole getaddrinfo process.
+      addr_res = &this->addrinfo;
+    }
+
+  for (struct addrinfo* rp = addr_res; rp; rp = rp->ai_next)
+    {
+      if (!this->connecting)
+        {
+          try {
+            this->init_socket(rp);
+          }
+          catch (const std::runtime_error& error) {
+            log_error("Failed to init socket: " << error.what());
+            break;
+          }
+        }
+      if (::connect(this->socket, rp->ai_addr, rp->ai_addrlen) == 0
+          || errno == EISCONN)
+        {
+          log_info("Connection success.");
+          TimedEventsManager::instance().cancel("connection_timeout"s +
+                                                std::to_string(this->socket));
+          this->poller->add_socket_handler(this);
+          this->connected = true;
+          this->connecting = false;
+#ifdef BOTAN_FOUND
+          if (this->use_tls)
+            this->start_tls();
+#endif
+          this->on_connected();
+          return ;
+        }
+      else if (errno == EINPROGRESS || errno == EALREADY)
+        {   // retry this process later, when the socket
+            // is ready to be written on.
+          this->connecting = true;
+          this->poller->add_socket_handler(this);
+          this->poller->watch_send_events(this);
+          // Save the addrinfo structure, to use it on the next call
+          this->ai_addrlen = rp->ai_addrlen;
+          memcpy(&this->ai_addr, rp->ai_addr, this->ai_addrlen);
+          memcpy(&this->addrinfo, rp, sizeof(struct addrinfo));
+          this->addrinfo.ai_addr = reinterpret_cast<struct sockaddr*>(&this->ai_addr);
+          this->addrinfo.ai_next = nullptr;
+          // If the connection has not succeeded or failed in 5s, we consider
+          // it to have failed
+          TimedEventsManager::instance().add_event(
+                                                   TimedEvent(std::chrono::steady_clock::now() + 5s,
+                                                              std::bind(&TCPSocketHandler::on_connection_timeout, this),
+                                                              "connection_timeout"s + std::to_string(this->socket)));
+          return ;
+        }
+      log_info("Connection failed:" << strerror(errno));
+    }
+  log_error("All connection attempts failed.");
+  this->close();
+  this->on_connection_failed(strerror(errno));
+  return ;
+}
+
+void TCPSocketHandler::on_connection_timeout()
+{
+  this->close();
+  this->on_connection_failed("connection timed out");
+}
+
+void TCPSocketHandler::connect()
+{
+  this->connect(this->address, this->port, this->use_tls);
+}
+
+void TCPSocketHandler::on_recv()
+{
+#ifdef BOTAN_FOUND
+  if (this->use_tls)
+    this->tls_recv();
+  else
+#endif
+    this->plain_recv();
+}
+
+void TCPSocketHandler::plain_recv()
+{
+  static constexpr size_t buf_size = 4096;
+  char buf[buf_size];
+  void* recv_buf = this->get_receive_buffer(buf_size);
+
+  if (recv_buf == nullptr)
+    recv_buf = buf;
+
+  const ssize_t size = this->do_recv(recv_buf, buf_size);
+
+  if (size > 0)
+    {
+      if (buf == recv_buf)
+        {
+          // data needs to be placed in the in_buf string, because no buffer
+          // was provided to receive that data directly. The in_buf buffer
+          // will be handled in parse_in_buffer()
+          this->in_buf += std::string(buf, size);
+        }
+      this->parse_in_buffer(size);
+    }
+}
+
+ssize_t TCPSocketHandler::do_recv(void* recv_buf, const size_t buf_size)
+{
+  ssize_t size = ::recv(this->socket, recv_buf, buf_size, 0);
+  if (0 == size)
+    {
+      this->on_connection_close("");
+      this->close();
+    }
+  else if (-1 == size)
+    {
+      log_warning("Error while reading from socket: " << strerror(errno));
+      // Remember if we were connecting, or already connected when this
+      // happened, because close() sets this->connecting to false
+      const auto were_connecting = this->connecting;
+      this->close();
+      if (were_connecting)
+        this->on_connection_failed(strerror(errno));
+      else
+        this->on_connection_close(strerror(errno));
+    }
+  return size;
+}
+
+void TCPSocketHandler::on_send()
+{
+  struct iovec msg_iov[UIO_FASTIOV] = {};
+  struct msghdr msg{nullptr, 0,
+      msg_iov,
+      0, nullptr, 0, 0};
+  for (std::string& s: this->out_buf)
+    {
+      // unconsting the content of s is ok, sendmsg will never modify it
+      msg_iov[msg.msg_iovlen].iov_base = const_cast<char*>(s.data());
+      msg_iov[msg.msg_iovlen].iov_len = s.size();
+      if (++msg.msg_iovlen == UIO_FASTIOV)
+        break;
+    }
+  ssize_t res = ::sendmsg(this->socket, &msg, MSG_NOSIGNAL);
+  if (res < 0)
+    {
+      log_error("sendmsg failed: " << strerror(errno));
+      this->on_connection_close(strerror(errno));
+      this->close();
+    }
+  else
+    {
+      // remove all the strings that were successfully sent.
+      for (auto it = this->out_buf.begin();
+           it != this->out_buf.end();)
+        {
+          if (static_cast<size_t>(res) >= (*it).size())
+            {
+              res -= (*it).size();
+              it = this->out_buf.erase(it);
+            }
+          else
+            {
+              // If one string has partially been sent, we use substr to
+              // crop it
+              if (res > 0)
+                (*it) = (*it).substr(res, std::string::npos);
+              break;
+            }
+        }
+      if (this->out_buf.empty())
+        this->poller->stop_watching_send_events(this);
+    }
+}
+
+void TCPSocketHandler::close()
+{
+  TimedEventsManager::instance().cancel("connection_timeout"s +
+                                        std::to_string(this->socket));
+  if (this->connected || this->connecting)
+    this->poller->remove_socket_handler(this->get_socket());
+  if (this->socket != -1)
+    {
+      ::close(this->socket);
+      this->socket = -1;
+    }
+  this->connected = false;
+  this->connecting = false;
+#ifdef CARES_FOUND
+  this->resolving = false;
+  this->resolved = false;
+  this->resolved4 = false;
+  this->resolved6 = false;
+  this->free_cares_addrinfo();
+  this->cares_error.clear();
+#endif
+  this->in_buf.clear();
+  this->out_buf.clear();
+  this->port.clear();
+}
+
+void TCPSocketHandler::send_data(std::string&& data)
+{
+#ifdef BOTAN_FOUND
+  if (this->use_tls)
+    this->tls_send(std::move(data));
+  else
+#endif
+    this->raw_send(std::move(data));
+}
+
+void TCPSocketHandler::raw_send(std::string&& data)
+{
+  if (data.empty())
+    return ;
+  this->out_buf.emplace_back(std::move(data));
+  if (this->connected)
+    this->poller->watch_send_events(this);
+}
+
+void TCPSocketHandler::send_pending_data()
+{
+  if (this->connected && !this->out_buf.empty())
+    this->poller->watch_send_events(this);
+}
+
+bool TCPSocketHandler::is_connected() const
+{
+  return this->connected;
+}
+
+bool TCPSocketHandler::is_connecting() const
+{
+#ifdef CARES_FOUND
+  return this->connecting || this->resolving;
+#else
+  return this->connecting;
+#endif
+}
+
+void* TCPSocketHandler::get_receive_buffer(const size_t) const
+{
+  return nullptr;
+}
+
+#ifdef BOTAN_FOUND
+void TCPSocketHandler::start_tls()
+{
+  Botan::TLS::Server_Information server_info(this->address, "irc", std::stoul(this->port));
+  this->tls = std::make_unique<Botan::TLS::Client>(
+      std::bind(&TCPSocketHandler::tls_output_fn, this, ph::_1, ph::_2),
+      std::bind(&TCPSocketHandler::tls_data_cb, this, ph::_1, ph::_2),
+      std::bind(&TCPSocketHandler::tls_alert_cb, this, ph::_1, ph::_2, ph::_3),
+      std::bind(&TCPSocketHandler::tls_handshake_cb, this, ph::_1),
+      session_manager, credential_manager, policy,
+      rng, server_info, Botan::TLS::Protocol_Version::latest_tls_version());
+}
+
+void TCPSocketHandler::tls_recv()
+{
+  static constexpr size_t buf_size = 4096;
+  char recv_buf[buf_size];
+
+  const ssize_t size = this->do_recv(recv_buf, buf_size);
+  if (size > 0)
+    {
+      const bool was_active = this->tls->is_active();
+      this->tls->received_data(reinterpret_cast<const Botan::byte*>(recv_buf),
+                              static_cast<size_t>(size));
+      if (!was_active && this->tls->is_active())
+        this->on_tls_activated();
+    }
+}
+
+void TCPSocketHandler::tls_send(std::string&& data)
+{
+  if (this->tls->is_active())
+    {
+      const bool was_active = this->tls->is_active();
+      if (!this->pre_buf.empty())
+        {
+          this->tls->send(reinterpret_cast<const Botan::byte*>(this->pre_buf.data()),
+                         this->pre_buf.size());
+          this->pre_buf = "";
+        }
+      if (!data.empty())
+        this->tls->send(reinterpret_cast<const Botan::byte*>(data.data()),
+                       data.size());
+      if (!was_active && this->tls->is_active())
+        this->on_tls_activated();
+    }
+  else
+    this->pre_buf += data;
+}
+
+void TCPSocketHandler::tls_data_cb(const Botan::byte* data, size_t size)
+{
+  this->in_buf += std::string(reinterpret_cast<const char*>(data),
+                              size);
+  if (!this->in_buf.empty())
+    this->parse_in_buffer(size);
+}
+
+void TCPSocketHandler::tls_output_fn(const Botan::byte* data, size_t size)
+{
+  this->raw_send(std::string(reinterpret_cast<const char*>(data), size));
+}
+
+void TCPSocketHandler::tls_alert_cb(Botan::TLS::Alert alert, const Botan::byte*, size_t)
+{
+  log_debug("tls_alert: " << alert.type_string());
+}
+
+bool TCPSocketHandler::tls_handshake_cb(const Botan::TLS::Session& session)
+{
+  log_debug("Handshake with " << session.server_info().hostname() << " complete."
+            << " Version: " << session.version().to_string()
+            << " using " << session.ciphersuite().to_string());
+  if (!session.session_id().empty())
+    log_debug("Session ID " << Botan::hex_encode(session.session_id()));
+  if (!session.session_ticket().empty())
+    log_debug("Session ticket " << Botan::hex_encode(session.session_ticket()));
+  return true;
+}
+
+void TCPSocketHandler::on_tls_activated()
+{
+  this->send_data("");
+}
+
+void Permissive_Credentials_Manager::verify_certificate_chain(const std::string& type,
+                                                const std::string& purported_hostname,
+                                                const std::vector<Botan::X509_Certificate>&)
+{ // TODO: Offer the admin to disallow connection on untrusted
+  // certificates
+  log_debug("Checking remote certificate (" << type << ") for hostname " << purported_hostname);
+}
+
+#endif // BOTAN_FOUND
+
+#ifdef CARES_FOUND
+
+void TCPSocketHandler::on_hostname4_resolved(int status, struct hostent* hostent)
+{
+  this->resolved4 = true;
+  if (status == ARES_SUCCESS)
+    this->fill_ares_addrinfo4(hostent);
+  else
+    this->cares_error = ::ares_strerror(status);
+
+  if (this->resolved4 && this->resolved6)
+    {
+      this->resolved = true;
+      this->resolving = false;
+      this->connect();
+    }
+}
+
+void TCPSocketHandler::on_hostname6_resolved(int status, struct hostent* hostent)
+{
+  this->resolved6 = true;
+  if (status == ARES_SUCCESS)
+    this->fill_ares_addrinfo6(hostent);
+  else
+    this->cares_error = ::ares_strerror(status);
+
+  if (this->resolved4 && this->resolved6)
+    {
+      this->resolved = true;
+      this->resolving = false;
+      this->connect();
+    }
+}
+
+void TCPSocketHandler::fill_ares_addrinfo4(const struct hostent* hostent)
+{
+  struct addrinfo* prev = this->cares_addrinfo;
+  struct in_addr** address = reinterpret_cast<struct in_addr**>(hostent->h_addr_list);
+
+  while (*address)
+    {
+       // Create a new addrinfo list element, and fill it
+      struct addrinfo* current = new struct addrinfo;
+      current->ai_flags = 0;
+      current->ai_family = hostent->h_addrtype;
+      current->ai_socktype = SOCK_STREAM;
+      current->ai_protocol = 0;
+      current->ai_addrlen = sizeof(struct sockaddr_in);
+
+      struct sockaddr_in* addr = new struct sockaddr_in;
+      addr->sin_family = hostent->h_addrtype;
+      addr->sin_port = htons(strtoul(this->port.data(), nullptr, 10));
+      addr->sin_addr.s_addr = (*address)->s_addr;
+
+      current->ai_addr = reinterpret_cast<struct sockaddr*>(addr);
+      current->ai_next = nullptr;
+      current->ai_canonname = nullptr;
+
+      current->ai_next = prev;
+      this->cares_addrinfo = current;
+      prev = current;
+      ++address;
+    }
+}
+
+void TCPSocketHandler::fill_ares_addrinfo6(const struct hostent* hostent)
+{
+  struct addrinfo* prev = this->cares_addrinfo;
+  struct in6_addr** address = reinterpret_cast<struct in6_addr**>(hostent->h_addr_list);
+
+  while (*address)
+    {
+       // Create a new addrinfo list element, and fill it
+      struct addrinfo* current = new struct addrinfo;
+      current->ai_flags = 0;
+      current->ai_family = hostent->h_addrtype;
+      current->ai_socktype = SOCK_STREAM;
+      current->ai_protocol = 0;
+      current->ai_addrlen = sizeof(struct sockaddr_in6);
+
+      struct sockaddr_in6* addr = new struct sockaddr_in6;
+      addr->sin6_family = hostent->h_addrtype;
+      addr->sin6_port = htons(strtoul(this->port.data(), nullptr, 10));
+      ::memcpy(addr->sin6_addr.s6_addr, (*address)->s6_addr, 16);
+      addr->sin6_flowinfo = 0;
+      addr->sin6_scope_id = 0;
+
+      current->ai_addr = reinterpret_cast<struct sockaddr*>(addr);
+      current->ai_next = nullptr;
+      current->ai_canonname = nullptr;
+
+      current->ai_next = prev;
+      this->cares_addrinfo = current;
+      prev = current;
+      ++address;
+    }
+}
+
+void TCPSocketHandler::free_cares_addrinfo()
+{
+  while (this->cares_addrinfo)
+    {
+      delete this->cares_addrinfo->ai_addr;
+      auto next = this->cares_addrinfo->ai_next;
+      delete this->cares_addrinfo;
+      this->cares_addrinfo = next;
+    }
+}
+
+#endif  // CARES_FOUND
diff --git a/louloulibs/network/tcp_socket_handler.hpp b/louloulibs/network/tcp_socket_handler.hpp
new file mode 100644
index 0000000..2b5cd49
--- /dev/null
+++ b/louloulibs/network/tcp_socket_handler.hpp
@@ -0,0 +1,293 @@
+#ifndef SOCKET_HANDLER_INCLUDED
+# define SOCKET_HANDLER_INCLUDED
+
+#include <network/socket_handler.hpp>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+
+#include <memory>
+#include <string>
+#include <list>
+
+#include "louloulibs.h"
+
+#ifdef CARES_FOUND
+# include <ares.h>
+#endif
+
+#ifdef BOTAN_FOUND
+# include <botan/botan.h>
+# include <botan/tls_client.h>
+
+/**
+ * A very simple credential manager that accepts any certificate.
+ */
+class Permissive_Credentials_Manager: public Botan::Credentials_Manager
+{
+public:
+  void verify_certificate_chain(const std::string& type,
+                                const std::string& purported_hostname,
+                                const std::vector<Botan::X509_Certificate>&);
+};
+#endif // BOTAN_FOUND
+
+/**
+ * An interface, with a series of callbacks that should be implemented in
+ * subclasses that deal with a socket. These callbacks are called on various events
+ * (read/write/timeout, etc) when they are notified to a poller
+ * (select/poll/epoll etc)
+ */
+class TCPSocketHandler: public SocketHandler
+{
+protected:
+  ~TCPSocketHandler();
+
+public:
+  explicit TCPSocketHandler(std::shared_ptr<Poller> poller);
+  /**
+   * Connect to the remote server, and call on_connected() if this
+   * succeeds. If tls is true, we set use_tls to true and will also call
+   * start_tls() when the connection succeeds.
+   */
+  void connect(const std::string& address, const std::string& port, const bool tls);
+  void connect() override final;
+  /**
+   * Reads raw data from the socket. And pass it to parse_in_buffer()
+   * If we are using TLS on this connection, we call tls_recv()
+   */
+  void on_recv() override final;
+  /**
+   * Write as much data from out_buf as possible, in the socket.
+   */
+  void on_send() override final;
+  /**
+   * Add the given data to out_buf and tell our poller that we want to be
+   * notified when a send event is ready.
+   *
+   * This can be overriden if we want to modify the data before sending
+   * it. For example if we want to encrypt it.
+   */
+  void send_data(std::string&& data);
+  /**
+   * Watch the socket for send events, if our out buffer is not empty.
+   */
+  void send_pending_data();
+  /**
+   * Close the connection, remove us from the poller
+   */
+  void close();
+  /**
+   * Called by a TimedEvent, when the connection did not succeed or fail
+   * after a given time.
+   */
+  void on_connection_timeout();
+  /**
+   * Called when the connection is successful.
+   */
+  virtual void on_connected() = 0;
+  /**
+   * Called when the connection fails. Not when it is closed later, just at
+   * the connect() call.
+   */
+  virtual void on_connection_failed(const std::string& reason) = 0;
+  /**
+   * Called when we detect a disconnection from the remote host.
+   */
+  virtual void on_connection_close(const std::string& error) = 0;
+  /**
+   * Handle/consume (some of) the data received so far.  The data to handle
+   * may be in the in_buf buffer, or somewhere else, depending on what
+   * get_receive_buffer() returned.  If some data is used from in_buf, it
+   * should be truncated, only the unused data should be left untouched.
+   *
+   * The size argument is the size of the last chunk of data that was added to the buffer.
+   */
+  virtual void parse_in_buffer(const size_t size) = 0;
+  bool is_connected() const override final;
+  bool is_connecting() const;
+
+#ifdef CARES_FOUND
+  void on_hostname4_resolved(int status, struct hostent* hostent);
+  void on_hostname6_resolved(int status, struct hostent* hostent);
+
+  void free_cares_addrinfo();
+
+  void fill_ares_addrinfo4(const struct hostent* hostent);
+  void fill_ares_addrinfo6(const struct hostent* hostent);
+#endif
+
+private:
+  /**
+   * Initialize the socket with the parameters contained in the given
+   * addrinfo structure.
+   */
+  void init_socket(const struct addrinfo* rp);
+  /**
+   * Reads from the socket into the provided buffer.  If an error occurs
+   * (read returns <= 0), the handling of the error is done here (close the
+   * connection, log a message, etc).
+   *
+   * Returns the value returned by ::recv(), so the buffer should not be
+   * used if it’s not positive.
+   */
+  ssize_t do_recv(void* recv_buf, const size_t buf_size);
+  /**
+   * Reads data from the socket and calls parse_in_buffer with it.
+   */
+  void plain_recv();
+  /**
+   * Mark the given data as ready to be sent, as-is, on the socket, as soon
+   * as we can.
+   */
+  void raw_send(std::string&& data);
+
+#ifdef BOTAN_FOUND
+  /**
+   * Create the TLS::Client object, with all the callbacks etc. This must be
+   * called only when we know we are able to send TLS-encrypted data over
+   * the socket.
+   */
+  void start_tls();
+  /**
+   * An additional step to pass the data into our tls object to decrypt it
+   * before passing it to parse_in_buffer.
+   */
+  void tls_recv();
+  /**
+   * Pass the data to the tls object in order to encrypt it. The tls object
+   * will then call raw_send as a callback whenever data as been encrypted
+   * and can be sent on the socket.
+   */
+  void tls_send(std::string&& data);
+  /**
+   * Called by the tls object that some data has been decrypt. We call
+   * parse_in_buffer() to handle that unencrypted data.
+   */
+  void tls_data_cb(const Botan::byte* data, size_t size);
+  /**
+   * Called by the tls object to indicate that some data has been encrypted
+   * and is now ready to be sent on the socket as is.
+   */
+  void tls_output_fn(const Botan::byte* data, size_t size);
+  /**
+   * Called by the tls object to indicate that a TLS alert has been
+   * received. We don’t use it, we just log some message, at the moment.
+   */
+  void tls_alert_cb(Botan::TLS::Alert alert, const Botan::byte*, size_t);
+  /**
+   * Called by the tls object at the end of the TLS handshake. We don't do
+   * anything here appart from logging the TLS session information.
+   */
+  bool tls_handshake_cb(const Botan::TLS::Session& session);
+  /**
+   * Called whenever the tls session goes from inactive to active. This
+   * means that the handshake has just been successfully done, and we can
+   * now proceed to send any available data into our tls object.
+   */
+  void on_tls_activated();
+#endif // BOTAN_FOUND
+  /**
+   * Where data is added, when we want to send something to the client.
+   */
+  std::list<std::string> out_buf;
+  /**
+   * Keep the details of the addrinfo that triggered a EINPROGRESS error when
+   * connect()ing to it, to reuse it directly when connect() is called
+   * again.
+   */
+  struct addrinfo addrinfo;
+  struct sockaddr_in6 ai_addr;
+  socklen_t ai_addrlen;
+
+protected:
+  /**
+   * Where data read from the socket is added until we can extract a full
+   * and meaningful “message” from it.
+   *
+   * TODO: something more efficient than a string.
+   */
+  std::string in_buf;
+  /**
+   * Whether we are using TLS on this connection or not.
+   */
+  bool use_tls;
+  /**
+   * Provide a buffer in which data can be directly received. This can be
+   * used to avoid copying data into in_buf before using it. If no buffer
+   * needs to be provided, nullptr is returned (the default implementation
+   * does that), in that case our internal in_buf will be used to save the
+   * data until it can be used by parse_in_buffer().
+   */
+  virtual void* get_receive_buffer(const size_t size) const;
+  /**
+   * Hostname we are connected/connecting to
+   */
+  std::string address;
+  /**
+   * Port we are connected/connecting to
+   */
+  std::string port;
+
+  bool connected;
+  bool connecting;
+
+#ifdef CARES_FOUND
+  bool resolving;
+  /**
+   * Whether or not the DNS resolution was successfully done
+   */
+  bool resolved;
+  bool resolved4;
+  bool resolved6;
+  /**
+   * When using c-ares to resolve the host asynchronously, we need the
+   * c-ares callback to fill a structure (a struct addrinfo, for
+   * compatibility with getaddrinfo and the rest of the code that works when
+   * c-ares is not used) with all returned values (for example an IPv6 and
+   * an IPv4). The next call of connect() will then try all these values
+   * (exactly like we do with the result of getaddrinfo) and save the one
+   * that worked (or returned EINPROGRESS) in the other struct addrinfo (see
+   * the members addrinfo, ai_addrlen, and ai_addr).
+   */
+  struct addrinfo* cares_addrinfo;
+  std::string cares_error;
+#endif  // CARES_FOUND
+
+private:
+  TCPSocketHandler(const TCPSocketHandler&) = delete;
+  TCPSocketHandler(TCPSocketHandler&&) = delete;
+  TCPSocketHandler& operator=(const TCPSocketHandler&) = delete;
+  TCPSocketHandler& operator=(TCPSocketHandler&&) = delete;
+
+#ifdef BOTAN_FOUND
+  /**
+   * Botan stuff to manipulate a TLS session.
+   */
+  static Botan::AutoSeeded_RNG rng;
+  static Permissive_Credentials_Manager credential_manager;
+  static Botan::TLS::Policy policy;
+  static Botan::TLS::Session_Manager_In_Memory session_manager;
+  /**
+   * We use a unique_ptr because we may not want to create the object at
+   * all. The Botan::TLS::Client object generates a handshake message as
+   * soon and calls the output_fn callback with it as soon as it is
+   * created. Therefore, we do not want to create it if do not intend to do
+   * send any TLS-encrypted message. We create the object only when needed
+   * (for example after we have negociated a TLS session using a STARTTLS
+   * message, or stuf like that).
+   *
+   * See start_tls for the method where this object is created.
+   */
+  std::unique_ptr<Botan::TLS::Client> tls;
+  /**
+   * An additional buffer to keep data that the user wants to send, but
+   * cannot because the handshake is not done.
+   */
+  std::string pre_buf;
+#endif // BOTAN_FOUND
+};
+
+#endif // SOCKET_HANDLER_INCLUDED
diff --git a/louloulibs/utils/encoding.cpp b/louloulibs/utils/encoding.cpp
new file mode 100644
index 0000000..f738ce2
--- /dev/null
+++ b/louloulibs/utils/encoding.cpp
@@ -0,0 +1,254 @@
+#include <utils/encoding.hpp>
+
+#include <utils/scopeguard.hpp>
+
+#include <stdexcept>
+
+#include <assert.h>
+#include <string.h>
+#include <iconv.h>
+
+#include <map>
+#include <bitset>
+
+/**
+ * The UTF-8-encoded character used as a place holder when a character conversion fails.
+ * This is U+FFFD � "replacement character"
+ */
+static const char* invalid_char = "\xef\xbf\xbd";
+static const size_t invalid_char_len = 3;
+
+namespace utils
+{
+  /**
+   * Based on http://en.wikipedia.org/wiki/UTF-8#Description
+   */
+  bool is_valid_utf8(const char* s)
+  {
+    if (!s)
+      return false;
+
+    const unsigned char* str = reinterpret_cast<const unsigned char*>(s);
+
+    while (*str)
+      {
+        // 4 bytes:  11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+        if ((str[0] & 0b11111000) == 0b11110000)
+          {
+            if (!str[1] || !str[2] || !str[3]
+                || ((str[1] & 0b11000000) != 0b10000000)
+                || ((str[2] & 0b11000000) != 0b10000000)
+                || ((str[3] & 0b11000000) != 0b10000000))
+              return false;
+            str += 4;
+          }
+        // 3 bytes:  1110xxx 10xxxxxx 10xxxxxx
+        else if ((str[0] & 0b11110000) == 0b11100000)
+          {
+            if (!str[1] || !str[2]
+                || ((str[1] & 0b11000000) != 0b10000000)
+                || ((str[2] & 0b11000000) != 0b10000000))
+              return false;
+            str += 3;
+          }
+        // 2 bytes:  110xxxxx 10xxxxxx
+        else if (((str[0]) & 0b11100000) == 0b11000000)
+          {
+            if (!str[1] ||
+                ((str[1] & 0b11000000) != 0b10000000))
+              return false;
+            str += 2;
+          }
+        // 1 byte:  0xxxxxxx
+        else if ((str[0] & 0b10000000) != 0)
+          return false;
+        else
+          str++;
+      }
+    return true;
+  }
+
+  std::string remove_invalid_xml_chars(const std::string& original)
+  {
+    // The given string MUST be a valid utf-8 string
+    unsigned char* res = new unsigned char[original.size()];
+    ScopeGuard sg([&res]() { delete[] res;});
+
+    // pointer where we write valid chars
+    unsigned char* r = res;
+
+    const unsigned char* str = reinterpret_cast<const unsigned char*>(original.c_str());
+    std::bitset<20> codepoint;
+
+    while (*str)
+      {
+        // 4 bytes:  11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+        if ((str[0] & 0b11111000) == 0b11110000)
+          {
+            codepoint  = ((str[0] & 0b00000111) << 18);
+            codepoint |= ((str[1] & 0b00111111) << 12);
+            codepoint |= ((str[2] & 0b00111111) << 6 );
+            codepoint |= ((str[3] & 0b00111111) << 0 );
+            if (codepoint.to_ulong() <= 0x10FFFF)
+              {
+                ::memcpy(r, str, 4);
+                r += 4;
+              }
+            str += 4;
+          }
+        // 3 bytes:  1110xxx 10xxxxxx 10xxxxxx
+        else if ((str[0] & 0b11110000) == 0b11100000)
+          {
+            codepoint  = ((str[0] & 0b00001111) << 12);
+            codepoint |= ((str[1] & 0b00111111) << 6);
+            codepoint |= ((str[2] & 0b00111111) << 0 );
+            if (codepoint.to_ulong() <= 0xD7FF ||
+                (codepoint.to_ulong() >= 0xE000 && codepoint.to_ulong() <= 0xFFFD))
+              {
+                ::memcpy(r, str, 3);
+                r += 3;
+              }
+            str += 3;
+          }
+        // 2 bytes:  110xxxxx 10xxxxxx
+        else if (((str[0]) & 0b11100000) == 0b11000000)
+          {
+            // All 2 bytes char are valid, don't even bother calculating
+            // the codepoint
+            ::memcpy(r, str, 2);
+            r += 2;
+            str += 2;
+          }
+        // 1 byte:  0xxxxxxx
+        else if ((str[0] & 0b10000000) == 0)
+          {
+            codepoint = ((str[0] & 0b01111111));
+            if (codepoint.to_ulong() == 0x09 ||
+                codepoint.to_ulong() == 0x0A ||
+                codepoint.to_ulong() == 0x0D ||
+                codepoint.to_ulong() >= 0x20)
+              {
+                ::memcpy(r, str, 1);
+                r += 1;
+              }
+            str += 1;
+          }
+        else
+          throw std::runtime_error("Invalid UTF-8 passed to remove_invalid_xml_chars");
+      }
+    return std::string(reinterpret_cast<char*>(res), r-res);
+  }
+
+  std::string convert_to_utf8(const std::string& str, const char* charset)
+  {
+    std::string res;
+
+    const iconv_t cd = iconv_open("UTF-8", charset);
+    if (cd == (iconv_t)-1)
+      throw std::runtime_error("Cannot convert into UTF-8");
+
+    // Make sure cd is always closed when we leave this function
+    ScopeGuard sg([&]{ iconv_close(cd); });
+
+    size_t inbytesleft = str.size();
+
+    // iconv will not attempt to modify this buffer, but some plateform
+    // require a char** anyway
+#ifdef ICONV_SECOND_ARGUMENT_IS_CONST
+    const char* inbuf_ptr = str.c_str();
+#else
+    char* inbuf_ptr = const_cast<char*>(str.c_str());
+#endif
+
+    size_t outbytesleft = str.size() * 4;
+    char* outbuf = new char[outbytesleft];
+    char* outbuf_ptr = outbuf;
+
+    // Make sure outbuf is always deleted when we leave this function
+    sg.add_callback([&]{ delete[] outbuf; });
+
+    bool done = false;
+    while (done == false)
+      {
+        size_t error = iconv(cd, &inbuf_ptr, &inbytesleft, &outbuf_ptr, &outbytesleft);
+        if ((size_t)-1 == error)
+          {
+            switch (errno)
+              {
+              case EILSEQ:
+                // Invalid byte found. Insert a placeholder instead of the
+                // converted character, jump one byte and continue
+                memcpy(outbuf_ptr, invalid_char, invalid_char_len);
+                outbuf_ptr += invalid_char_len;
+                inbytesleft--;
+                inbuf_ptr++;
+                break;
+              case EINVAL:
+                // A multibyte sequence is not terminated, but we can't
+                // provide any more data, so we just add a placeholder to
+                // indicate that the character is not properly converted,
+                // and we stop the conversion
+                memcpy(outbuf_ptr, invalid_char, invalid_char_len);
+                outbuf_ptr += invalid_char_len;
+                outbuf_ptr++;
+                done = true;
+                break;
+              case E2BIG:
+                // This should never happen
+                done = true;
+                break;
+              default:
+                // This should happen even neverer
+                done = true;
+                break;
+              }
+          }
+        else
+          {
+            // The conversion finished without any error, stop converting
+            done = true;
+          }
+      }
+    // Terminate the converted buffer, and copy that buffer it into the
+    // string we return
+    *outbuf_ptr = '\0';
+    res = outbuf;
+    return res;
+  }
+
+}
+
+namespace xep0106
+{
+  static const std::map<const char, const std::string> encode_map = {
+    {' ', "\\20"},
+    {'"', "\\22"},
+    {'&', "\\26"},
+    {'\'',"\\27"},
+    {'/', "\\2f"},
+    {':', "\\3a"},
+    {'<', "\\3c"},
+    {'>', "\\3e"},
+    {'@', "\\40"},
+  };
+
+  void decode(std::string& s)
+  {
+    std::string::size_type pos;
+    for (const auto& pair: encode_map)
+      while ((pos = s.find(pair.second)) != std::string::npos)
+        s.replace(pos, pair.second.size(),
+                  1, pair.first);
+  }
+
+  void encode(std::string& s)
+  {
+    std::string::size_type pos;
+    while ((pos = s.find_first_of(" \"&'/:<>@")) != std::string::npos)
+      {
+        auto it = encode_map.find(s[pos]);
+        assert(it != encode_map.end());
+        s.replace(pos, 1, it->second);
+      }
+  }
+}
diff --git a/louloulibs/utils/encoding.hpp b/louloulibs/utils/encoding.hpp
new file mode 100644
index 0000000..6b7ccd2
--- /dev/null
+++ b/louloulibs/utils/encoding.hpp
@@ -0,0 +1,38 @@
+#ifndef ENCODING_INCLUDED
+# define ENCODING_INCLUDED
+
+#include <string>
+
+namespace utils
+{
+  /**
+   * Returns true if the given null-terminated string is valid utf-8.
+   *
+   * Based on http://en.wikipedia.org/wiki/UTF-8#Description
+   */
+  bool is_valid_utf8(const char* s);
+  /**
+   * Remove all invalid codepoints from the given utf-8-encoded string.
+   * The value returned is a copy of the string, without the removed chars.
+   *
+   * See http://www.w3.org/TR/xml/#charsets for the list of valid characters
+   * in XML.
+   */
+  std::string remove_invalid_xml_chars(const std::string& original);
+  /**
+   * Convert the given string (encoded is "encoding") into valid utf-8.
+   * If some decoding fails, insert an utf-8 placeholder character instead.
+   */
+  std::string convert_to_utf8(const std::string& str, const char* encoding);
+}
+
+namespace xep0106
+{
+  /**
+   * Decode and encode inplace.
+   */
+  void decode(std::string&);
+  void encode(std::string&);
+}
+
+#endif // ENCODING_INCLUDED
diff --git a/louloulibs/utils/reload.cpp b/louloulibs/utils/reload.cpp
new file mode 100644
index 0000000..6600c75
--- /dev/null
+++ b/louloulibs/utils/reload.cpp
@@ -0,0 +1,13 @@
+#include <config/config.hpp>
+#include <logger/logger.hpp>
+
+void reload_process()
+{
+  // Closing the config will just force it to be reopened the next time
+  // a configuration option is needed
+  Config::close();
+  // Destroy the logger instance, to be recreated the next time a log
+  // line needs to be written
+  Logger::instance().reset();
+  log_debug("Configuration and logger reloaded.");
+}
diff --git a/louloulibs/utils/reload.hpp b/louloulibs/utils/reload.hpp
new file mode 100644
index 0000000..16d64f7
--- /dev/null
+++ b/louloulibs/utils/reload.hpp
@@ -0,0 +1,10 @@
+#ifndef RELOAD_HPP_INCLUDED
+#define RELOAD_HPP_INCLUDED
+
+/**
+ * Reload the server's configuration, and close the logger (so that it
+ * closes its files etc, to take into account the new configuration)
+ */
+void reload_process();
+
+#endif /* RELOAD_HPP_INCLUDED */
diff --git a/louloulibs/utils/revstr.cpp b/louloulibs/utils/revstr.cpp
new file mode 100644
index 0000000..87fd801
--- /dev/null
+++ b/louloulibs/utils/revstr.cpp
@@ -0,0 +1,9 @@
+#include <utils/revstr.hpp>
+
+namespace utils
+{
+  std::string revstr(const std::string& original)
+  {
+    return {original.rbegin(), original.rend()};
+  }
+}
diff --git a/louloulibs/utils/revstr.hpp b/louloulibs/utils/revstr.hpp
new file mode 100644
index 0000000..27c9e3e
--- /dev/null
+++ b/louloulibs/utils/revstr.hpp
@@ -0,0 +1,11 @@
+#ifndef REVSTR_HPP_INCLUDED
+# define REVSTR_HPP_INCLUDED
+
+#include <string>
+
+namespace utils
+{
+  std::string revstr(const std::string& original);
+}
+
+#endif // REVSTR_HPP_INCLUDED
diff --git a/louloulibs/utils/scopeguard.hpp b/louloulibs/utils/scopeguard.hpp
new file mode 100644
index 0000000..df78831
--- /dev/null
+++ b/louloulibs/utils/scopeguard.hpp
@@ -0,0 +1,89 @@
+#ifndef SCOPEGUARD_HPP
+#define SCOPEGUARD_HPP
+
+#include <functional>
+#include <vector>
+
+/**
+ * A class to be used to make sure some functions are called when the scope
+ * is left, because they will be called in the ScopeGuard's destructor.  It
+ * can for example be used to delete some pointer whenever any exception is
+ * called.  Example:
+
+ * {
+ *  ScopeGuard scope;
+ *  int* number = new int(2);
+ *  scope.add_callback([number]() { delete number; });
+ *  // Do some other stuff with the number. But these stuff might throw an exception:
+ *  throw std::runtime_error("Some error not caught here, but in our caller");
+ *  return true;
+ * }
+
+ * In this example, our pointer will always be deleted, even when the
+ * exception is thrown.  If we want the functions to be called only when the
+ * scope is left because of an unexpected exception, we can use
+ * ScopeGuard::disable();
+ */
+
+namespace utils
+{
+
+class ScopeGuard
+{
+public:
+  /**
+   * The constructor can take a callback. But additional callbacks can be
+   * added later with add_callback()
+   */
+  explicit ScopeGuard(std::function<void()>&& func):
+    enabled(true)
+  {
+    this->add_callback(std::move(func));
+  }
+  /**
+   * default constructor, the scope guard is enabled but empty, use
+   * add_callback()
+   */
+  explicit ScopeGuard():
+    enabled(true)
+  {
+  }
+  /**
+   * Call all callbacks in the desctructor, unless it has been disabled.
+   */
+  ~ScopeGuard()
+  {
+    if (this->enabled)
+      for (auto& func: this->callbacks)
+        func();
+  }
+  /**
+   * Add a callback to be called in our destructor, one scope guard can be
+   * used for more than one task, if needed.
+   */
+  void add_callback(std::function<void()>&& func)
+  {
+    this->callbacks.emplace_back(std::move(func));
+  }
+  /**
+   * Disable that scope guard, nothing will be done when the scope is
+   * exited.
+   */
+  void disable()
+  {
+    this->enabled = false;
+  }
+
+private:
+  bool enabled;
+  std::vector<std::function<void()>> callbacks;
+
+  ScopeGuard(const ScopeGuard&) = delete;
+  ScopeGuard& operator=(ScopeGuard&&) = delete;
+  ScopeGuard(ScopeGuard&&) = delete;
+  ScopeGuard& operator=(const ScopeGuard&) = delete;
+};
+
+}
+
+#endif
diff --git a/louloulibs/utils/sha1.cpp b/louloulibs/utils/sha1.cpp
new file mode 100644
index 0000000..76476df
--- /dev/null
+++ b/louloulibs/utils/sha1.cpp
@@ -0,0 +1,154 @@
+/* This code is public-domain - it is based on libcrypt
+ * placed in the public domain by Wei Dai and other contributors.
+ */
+
+#include "sha1.hpp"
+
+#define SHA1_K0 0x5a827999
+#define SHA1_K20 0x6ed9eba1
+#define SHA1_K40 0x8f1bbcdc
+#define SHA1_K60 0xca62c1d6
+
+const uint8_t sha1InitState[] = {
+  0x01,0x23,0x45,0x67, // H0
+  0x89,0xab,0xcd,0xef, // H1
+  0xfe,0xdc,0xba,0x98, // H2
+  0x76,0x54,0x32,0x10, // H3
+  0xf0,0xe1,0xd2,0xc3  // H4
+};
+
+void sha1_init(sha1nfo *s) {
+  memcpy(s->state.b,sha1InitState,HASH_LENGTH);
+  s->byteCount = 0;
+  s->bufferOffset = 0;
+}
+
+uint32_t sha1_rol32(uint32_t number, uint8_t bits) {
+  return ((number << bits) | (number >> (32-bits)));
+}
+
+void sha1_hashBlock(sha1nfo *s) {
+  uint8_t i;
+  uint32_t a,b,c,d,e,t;
+
+  a=s->state.w[0];
+  b=s->state.w[1];
+  c=s->state.w[2];
+  d=s->state.w[3];
+  e=s->state.w[4];
+  for (i=0; i<80; i++) {
+    if (i>=16) {
+      t = s->buffer.w[(i+13)&15] ^ s->buffer.w[(i+8)&15] ^ s->buffer.w[(i+2)&15] ^ s->buffer.w[i&15];
+      s->buffer.w[i&15] = sha1_rol32(t,1);
+    }
+    if (i<20) {
+      t = (d ^ (b & (c ^ d))) + SHA1_K0;
+    } else if (i<40) {
+      t = (b ^ c ^ d) + SHA1_K20;
+    } else if (i<60) {
+      t = ((b & c) | (d & (b | c))) + SHA1_K40;
+    } else {
+      t = (b ^ c ^ d) + SHA1_K60;
+    }
+    t+=sha1_rol32(a,5) + e + s->buffer.w[i&15];
+    e=d;
+    d=c;
+    c=sha1_rol32(b,30);
+    b=a;
+    a=t;
+  }
+  s->state.w[0] += a;
+  s->state.w[1] += b;
+  s->state.w[2] += c;
+  s->state.w[3] += d;
+  s->state.w[4] += e;
+}
+
+void sha1_addUncounted(sha1nfo *s, uint8_t data) {
+  s->buffer.b[s->bufferOffset ^ 3] = data;
+  s->bufferOffset++;
+  if (s->bufferOffset == BLOCK_LENGTH) {
+    sha1_hashBlock(s);
+    s->bufferOffset = 0;
+  }
+}
+
+void sha1_writebyte(sha1nfo *s, uint8_t data) {
+  ++s->byteCount;
+  sha1_addUncounted(s, data);
+}
+
+void sha1_write(sha1nfo *s, const char *data, size_t len) {
+	for (;len--;) sha1_writebyte(s, (uint8_t) *data++);
+}
+
+void sha1_pad(sha1nfo *s) {
+  // Implement SHA-1 padding (fips180-2 §5.1.1)
+
+  // Pad with 0x80 followed by 0x00 until the end of the block
+  sha1_addUncounted(s, 0x80);
+  while (s->bufferOffset != 56) sha1_addUncounted(s, 0x00);
+
+  // Append length in the last 8 bytes
+  sha1_addUncounted(s, 0); // We're only using 32 bit lengths
+  sha1_addUncounted(s, 0); // But SHA-1 supports 64 bit lengths
+  sha1_addUncounted(s, 0); // So zero pad the top bits
+  sha1_addUncounted(s, s->byteCount >> 29); // Shifting to multiply by 8
+  sha1_addUncounted(s, s->byteCount >> 21); // as SHA-1 supports bitstreams as well as
+  sha1_addUncounted(s, s->byteCount >> 13); // byte.
+  sha1_addUncounted(s, s->byteCount >> 5);
+  sha1_addUncounted(s, s->byteCount << 3);
+}
+
+uint8_t* sha1_result(sha1nfo *s) {
+  int i;
+  // Pad to complete the last block
+  sha1_pad(s);
+
+  // Swap byte order back
+  for (i=0; i<5; i++) {
+    uint32_t a,b;
+    a=s->state.w[i];
+    b=a<<24;
+    b|=(a<<8) & 0x00ff0000;
+    b|=(a>>8) & 0x0000ff00;
+    b|=a>>24;
+    s->state.w[i]=b;
+  }
+
+  // Return pointer to hash (20 characters)
+  return s->state.b;
+}
+
+#define HMAC_IPAD 0x36
+#define HMAC_OPAD 0x5c
+
+void sha1_initHmac(sha1nfo *s, const uint8_t* key, int keyLength) {
+  uint8_t i;
+  memset(s->keyBuffer, 0, BLOCK_LENGTH);
+  if (keyLength > BLOCK_LENGTH) {
+    // Hash long keys
+    sha1_init(s);
+    for (;keyLength--;) sha1_writebyte(s, *key++);
+    memcpy(s->keyBuffer, sha1_result(s), HASH_LENGTH);
+  } else {
+    // Block length keys are used as is
+    memcpy(s->keyBuffer, key, keyLength);
+  }
+  // Start inner hash
+  sha1_init(s);
+  for (i=0; i<BLOCK_LENGTH; i++) {
+    sha1_writebyte(s, s->keyBuffer[i] ^ HMAC_IPAD);
+  }
+}
+
+uint8_t* sha1_resultHmac(sha1nfo *s) {
+  uint8_t i;
+  // Complete inner hash
+  memcpy(s->innerHash,sha1_result(s),HASH_LENGTH);
+  // Calculate outer hash
+  sha1_init(s);
+  for (i=0; i<BLOCK_LENGTH; i++) sha1_writebyte(s, s->keyBuffer[i] ^ HMAC_OPAD);
+  for (i=0; i<HASH_LENGTH; i++) sha1_writebyte(s, s->innerHash[i]);
+  return sha1_result(s);
+}
diff --git a/louloulibs/utils/sha1.hpp b/louloulibs/utils/sha1.hpp
new file mode 100644
index 0000000..d02de75
--- /dev/null
+++ b/louloulibs/utils/sha1.hpp
@@ -0,0 +1,35 @@
+/* This code is public-domain - it is based on libcrypt
+ * placed in the public domain by Wei Dai and other contributors.
+ */
+
+#include <stdint.h>
+#include <string.h>
+
+#define HASH_LENGTH 20
+#define BLOCK_LENGTH 64
+
+union _buffer {
+	uint8_t b[BLOCK_LENGTH];
+	uint32_t w[BLOCK_LENGTH/4];
+};
+
+union _state {
+	uint8_t b[HASH_LENGTH];
+	uint32_t w[HASH_LENGTH/4];
+};
+
+typedef struct sha1nfo {
+	union _buffer buffer;
+	uint8_t bufferOffset;
+	union _state state;
+	uint32_t byteCount;
+	uint8_t keyBuffer[BLOCK_LENGTH];
+	uint8_t innerHash[HASH_LENGTH];
+} sha1nfo;
+
+void sha1_init(sha1nfo *s);
+void sha1_writebyte(sha1nfo *s, uint8_t data);
+void sha1_write(sha1nfo *s, const char *data, size_t len);
+uint8_t* sha1_result(sha1nfo *s);
+void sha1_initHmac(sha1nfo *s, const uint8_t* key, int keyLength);
+uint8_t* sha1_resultHmac(sha1nfo *s);
diff --git a/louloulibs/utils/split.cpp b/louloulibs/utils/split.cpp
new file mode 100644
index 0000000..80f8dae
--- /dev/null
+++ b/louloulibs/utils/split.cpp
@@ -0,0 +1,19 @@
+#include <utils/split.hpp>
+#include <sstream>
+
+namespace utils
+{
+  std::vector<std::string> split(const std::string& s, const char delim, const bool allow_empty)
+  {
+    std::vector<std::string> ret;
+    std::stringstream ss(s);
+    std::string item;
+    while (std::getline(ss, item, delim))
+      {
+        if (item.empty() && !allow_empty)
+          continue ;
+        ret.emplace_back(std::move(item));
+      }
+    return ret;
+  }
+}
diff --git a/louloulibs/utils/split.hpp b/louloulibs/utils/split.hpp
new file mode 100644
index 0000000..6b487a9
--- /dev/null
+++ b/louloulibs/utils/split.hpp
@@ -0,0 +1,12 @@
+#ifndef SPLIT_INCLUDED
+# define SPLIT_INCLUDED
+
+#include <string>
+#include <vector>
+
+namespace utils
+{
+  std::vector<std::string> split(const std::string &s, const char delim, const bool allow_empty=true);
+}
+
+#endif // SPLIT_INCLUDED
diff --git a/louloulibs/utils/timed_events.cpp b/louloulibs/utils/timed_events.cpp
new file mode 100644
index 0000000..5010a3f
--- /dev/null
+++ b/louloulibs/utils/timed_events.cpp
@@ -0,0 +1,62 @@
+#include <utils/timed_events.hpp>
+
+TimedEvent::TimedEvent(std::chrono::steady_clock::time_point&& time_point,
+                       std::function<void()> callback, const std::string& name):
+  time_point(std::move(time_point)),
+  callback(callback),
+  repeat(false),
+  repeat_delay(0),
+  name(name)
+{
+}
+
+TimedEvent::TimedEvent(std::chrono::milliseconds&& duration,
+                       std::function<void()> callback, const std::string& name):
+  time_point(std::chrono::steady_clock::now() + duration),
+  callback(callback),
+  repeat(true),
+  repeat_delay(std::move(duration)),
+  name(name)
+{
+}
+
+TimedEvent::TimedEvent(TimedEvent&& other):
+  time_point(std::move(other.time_point)),
+  callback(std::move(other.callback)),
+  repeat(other.repeat),
+  repeat_delay(std::move(other.repeat_delay)),
+  name(std::move(other.name))
+{
+}
+
+TimedEvent::~TimedEvent()
+{
+}
+
+bool TimedEvent::is_after(const TimedEvent& other) const
+{
+  return this->is_after(other.time_point);
+}
+
+bool TimedEvent::is_after(const std::chrono::steady_clock::time_point& time_point) const
+{
+  return this->time_point >= time_point;
+}
+
+std::chrono::milliseconds TimedEvent::get_timeout() const
+{
+  auto now = std::chrono::steady_clock::now();
+  if (now > this->time_point)
+    return std::chrono::milliseconds(0);
+  return std::chrono::duration_cast<std::chrono::milliseconds>(this->time_point - now);
+}
+
+void TimedEvent::execute()
+{
+  this->callback();
+}
+
+const std::string& TimedEvent::get_name() const
+{
+  return this->name;
+}
diff --git a/louloulibs/utils/timed_events.hpp b/louloulibs/utils/timed_events.hpp
new file mode 100644
index 0000000..4e2800c
--- /dev/null
+++ b/louloulibs/utils/timed_events.hpp
@@ -0,0 +1,132 @@
+#ifndef TIMED_EVENTS_HPP
+# define TIMED_EVENTS_HPP
+
+#include <functional>
+#include <string>
+#include <chrono>
+#include <list>
+
+using namespace std::literals::chrono_literals;
+
+namespace utils {
+static constexpr std::chrono::milliseconds no_timeout = std::chrono::milliseconds(-1);
+}
+
+class TimedEventsManager;
+
+/**
+ * A callback with an associated date.
+ */
+
+class TimedEvent
+{
+  friend class TimedEventsManager;
+public:
+  /**
+   * An event the occurs only once, at the given time_point
+   */
+  explicit TimedEvent(std::chrono::steady_clock::time_point&& time_point,
+                      std::function<void()> callback, const std::string& name="");
+  explicit TimedEvent(std::chrono::milliseconds&& duration,
+                      std::function<void()> callback, const std::string& name="");
+
+  explicit TimedEvent(TimedEvent&&);
+  ~TimedEvent();
+  /**
+   * Whether or not this event happens after the other one.
+   */
+  bool is_after(const TimedEvent& other) const;
+  bool is_after(const std::chrono::steady_clock::time_point& time_point) const;
+  /**
+   * Return the duration difference between now and the event time point.
+   * If the difference would be negative (i.e. the event is expired), the
+   * returned value is 0 instead. The value cannot then be negative.
+   */
+  std::chrono::milliseconds get_timeout() const;
+  void execute();
+  const std::string& get_name() const;
+
+private:
+  /**
+   * The next time point at which the event is executed.
+   */
+  std::chrono::steady_clock::time_point time_point;
+  /**
+   * The function to execute.
+   */
+  const std::function<void()> callback;
+  /**
+   * Whether or not this events repeats itself until it is destroyed.
+   */
+  const bool repeat;
+  /**
+   * This value is added to the time_point each time the event is executed,
+   * if repeat is true. Otherwise it is ignored.
+   */
+  const std::chrono::milliseconds repeat_delay;
+  /**
+   * A name that is used to identify that event. If you want to find your
+   * event (for example if you want to cancel it), the name should be
+   * unique.
+   */
+  const std::string name;
+
+  TimedEvent(const TimedEvent&) = delete;
+  TimedEvent& operator=(const TimedEvent&) = delete;
+  TimedEvent& operator=(TimedEvent&&) = delete;
+};
+
+/**
+ * A class managing a list of TimedEvents.
+ * They are sorted, new events can be added, removed, fetch, etc.
+ */
+
+class TimedEventsManager
+{
+public:
+  ~TimedEventsManager();
+  /**
+   * Return the unique instance of this class
+   */
+  static TimedEventsManager& instance();
+  /**
+   * Add an event to the list of managed events. The list is sorted after
+   * this call.
+   */
+  void add_event(TimedEvent&& event);
+  /**
+   * Returns the duration, in milliseconds, between now and the next
+   * available event. If the event is already expired (the duration is
+   * negative), 0 is returned instead (as in “it's not too late, execute it
+   * now”)
+   * Returns a negative value if no event is available.
+   */
+  std::chrono::milliseconds get_timeout() const;
+  /**
+   * Execute all the expired events (if their expiration time is exactly
+   * now, or before now). The event is then removed from the list. If the
+   * event does repeat, its expiration time is updated and it is reinserted
+   * in the list at the correct position.
+   * Returns the number of executed events.
+   */
+  std::size_t execute_expired_events();
+  /**
+   * Remove (and thus cancel) all the timed events with the given name.
+   * Returns the number of canceled events.
+   */
+  std::size_t cancel(const std::string& name);
+  /**
+   * Return the number of managed events.
+   */
+  std::size_t size() const;
+
+private:
+  explicit TimedEventsManager();
+  std::list<TimedEvent> events;
+  TimedEventsManager(const TimedEventsManager&) = delete;
+  TimedEventsManager(TimedEventsManager&&) = delete;
+  TimedEventsManager& operator=(const TimedEventsManager&) = delete;
+  TimedEventsManager& operator=(TimedEventsManager&&) = delete;
+};
+
+#endif // TIMED_EVENTS_HPP
diff --git a/louloulibs/utils/timed_events_manager.cpp b/louloulibs/utils/timed_events_manager.cpp
new file mode 100644
index 0000000..2c75e48
--- /dev/null
+++ b/louloulibs/utils/timed_events_manager.cpp
@@ -0,0 +1,81 @@
+#include <utils/timed_events.hpp>
+
+TimedEventsManager& TimedEventsManager::instance()
+{
+  static TimedEventsManager inst;
+  return inst;
+}
+
+TimedEventsManager::TimedEventsManager()
+{
+}
+
+TimedEventsManager::~TimedEventsManager()
+{
+}
+
+void TimedEventsManager::add_event(TimedEvent&& event)
+{
+  for (auto it = this->events.begin(); it != this->events.end(); ++it)
+    {
+      if (it->is_after(event))
+        {
+          this->events.emplace(it, std::move(event));
+          return;
+        }
+    }
+  this->events.emplace_back(std::move(event));
+}
+
+std::chrono::milliseconds TimedEventsManager::get_timeout() const
+{
+  if (this->events.empty())
+    return utils::no_timeout;
+  return this->events.front().get_timeout() + std::chrono::milliseconds(1);
+}
+
+std::size_t TimedEventsManager::execute_expired_events()
+{
+  std::size_t count = 0;
+  const auto now = std::chrono::steady_clock::now();
+  for (auto it = this->events.begin(); it != this->events.end();)
+    {
+      if (!it->is_after(now))
+        {
+          TimedEvent copy(std::move(*it));
+          it = this->events.erase(it);
+          ++count;
+          copy.execute();
+          if (copy.repeat)
+            {
+              copy.time_point += copy.repeat_delay;
+              this->add_event(std::move(copy));
+            }
+          continue;
+        }
+      else
+        break;
+    }
+  return count;
+}
+
+std::size_t TimedEventsManager::cancel(const std::string& name)
+{
+  std::size_t res = 0;
+  for (auto it = this->events.begin(); it != this->events.end();)
+    {
+      if (it->get_name() == name)
+        {
+          it = this->events.erase(it);
+          res++;
+        }
+      else
+        ++it;
+    }
+  return res;
+}
+
+std::size_t TimedEventsManager::size() const
+{
+  return this->events.size();
+}
diff --git a/louloulibs/utils/tolower.cpp b/louloulibs/utils/tolower.cpp
new file mode 100644
index 0000000..3e518bd
--- /dev/null
+++ b/louloulibs/utils/tolower.cpp
@@ -0,0 +1,13 @@
+#include <utils/tolower.hpp>
+
+namespace utils
+{
+  std::string tolower(const std::string& original)
+  {
+    std::string res;
+    res.reserve(original.size());
+    for (const char c: original)
+      res += static_cast<char>(std::tolower(c));
+    return res;
+  }
+}
diff --git a/louloulibs/utils/tolower.hpp b/louloulibs/utils/tolower.hpp
new file mode 100644
index 0000000..0019182
--- /dev/null
+++ b/louloulibs/utils/tolower.hpp
@@ -0,0 +1,11 @@
+#ifndef TOLOWER_INCLUDED
+# define TOLOWER_INCLUDED
+
+#include <string>
+
+namespace utils
+{
+  std::string tolower(const std::string& original);
+}
+
+#endif // SPLIT_INCLUDED
diff --git a/louloulibs/xmpp/adhoc_command.cpp b/louloulibs/xmpp/adhoc_command.cpp
new file mode 100644
index 0000000..24145f5
--- /dev/null
+++ b/louloulibs/xmpp/adhoc_command.cpp
@@ -0,0 +1,105 @@
+#include <xmpp/adhoc_command.hpp>
+#include <xmpp/xmpp_component.hpp>
+#include <utils/reload.hpp>
+
+using namespace std::string_literals;
+
+AdhocCommand::AdhocCommand(std::vector<AdhocStep>&& callbacks, const std::string& name, const bool admin_only):
+  name(name),
+  callbacks(std::move(callbacks)),
+  admin_only(admin_only)
+{
+}
+
+AdhocCommand::~AdhocCommand()
+{
+}
+
+bool AdhocCommand::is_admin_only() const
+{
+  return this->admin_only;
+}
+
+void PingStep1(XmppComponent*, AdhocSession&, XmlNode& command_node)
+{
+  XmlNode note("note");
+  note["type"] = "info";
+  note.set_inner("Pong");
+  note.close();
+  command_node.add_child(std::move(note));
+}
+
+void HelloStep1(XmppComponent*, AdhocSession&, XmlNode& command_node)
+{
+  XmlNode x("jabber:x:data:x");
+  x["type"] = "form";
+  XmlNode title("title");
+  title.set_inner("Configure your name.");
+  title.close();
+  x.add_child(std::move(title));
+  XmlNode instructions("instructions");
+  instructions.set_inner("Please provide your name.");
+  instructions.close();
+  x.add_child(std::move(instructions));
+  XmlNode name_field("field");
+  name_field["var"] = "name";
+  name_field["type"] = "text-single";
+  name_field["label"] = "Your name";
+  XmlNode required("required");
+  required.close();
+  name_field.add_child(std::move(required));
+  name_field.close();
+  x.add_child(std::move(name_field));
+  x.close();
+  command_node.add_child(std::move(x));
+}
+
+void HelloStep2(XmppComponent*, AdhocSession& session, XmlNode& command_node)
+{
+  // Find out if the name was provided in the form.
+  XmlNode* x = command_node.get_child("x", "jabber:x:data");
+  if (x)
+    {
+      XmlNode* name_field = nullptr;
+      for (XmlNode* field: x->get_children("field", "jabber:x:data"))
+        if (field->get_tag("var") == "name")
+          {
+            name_field = field;
+            break;
+          }
+      if (name_field)
+        {
+          XmlNode* value = name_field->get_child("value", "jabber:x:data");
+          if (value)
+            {
+              XmlNode note("note");
+              note["type"] = "info";
+              note.set_inner("Hello "s + value->get_inner() + "!"s);
+              note.close();
+              command_node.delete_all_children();
+              command_node.add_child(std::move(note));
+              return;
+            }
+        }
+    }
+  command_node.delete_all_children();
+  XmlNode error(ADHOC_NS":error");
+  error["type"] = "modify";
+  XmlNode condition(STANZA_NS":bad-request");
+  condition.close();
+  error.add_child(std::move(condition));
+  error.close();
+  command_node.add_child(std::move(error));
+  session.terminate();
+}
+
+void Reload(XmppComponent*, AdhocSession&, XmlNode& command_node)
+{
+  ::reload_process();
+  command_node.delete_all_children();
+  XmlNode note("note");
+  note["type"] = "info";
+  note.set_inner("Configuration reloaded.");
+  note.close();
+  command_node.add_child(std::move(note));
+}
diff --git a/louloulibs/xmpp/adhoc_command.hpp b/louloulibs/xmpp/adhoc_command.hpp
new file mode 100644
index 0000000..1ff2bcf
--- /dev/null
+++ b/louloulibs/xmpp/adhoc_command.hpp
@@ -0,0 +1,43 @@
+#ifndef ADHOC_COMMAND_HPP
+# define ADHOC_COMMAND_HPP
+
+/**
+ * Describe an ad-hoc command.
+ *
+ * Can only have zero or one step for now. When execution is requested, it
+ * can return a result immediately, or provide a form to be filled, and
+ * provide a result once the filled form is received.
+ */
+
+#include <xmpp/adhoc_session.hpp>
+
+#include <functional>
+#include <string>
+
+class AdhocCommand
+{
+  friend class AdhocSession;
+public:
+  AdhocCommand(std::vector<AdhocStep>&& callback, const std::string& name, const bool admin_only);
+  ~AdhocCommand();
+
+  const std::string name;
+
+  bool is_admin_only() const;
+
+private:
+  /**
+   * A command may have one or more steps. Each step is a different
+   * callback, inserting things into a <command/> XmlNode and calling
+   * methods of an AdhocSession.
+   */
+  std::vector<AdhocStep> callbacks;
+  const bool admin_only;
+};
+
+void PingStep1(XmppComponent*, AdhocSession& session, XmlNode& command_node);
+void HelloStep1(XmppComponent*, AdhocSession& session, XmlNode& command_node);
+void HelloStep2(XmppComponent*, AdhocSession& session, XmlNode& command_node);
+void Reload(XmppComponent*, AdhocSession& session, XmlNode& command_node);
+
+#endif // ADHOC_COMMAND_HPP
diff --git a/louloulibs/xmpp/adhoc_commands_handler.cpp b/louloulibs/xmpp/adhoc_commands_handler.cpp
new file mode 100644
index 0000000..46c8a32
--- /dev/null
+++ b/louloulibs/xmpp/adhoc_commands_handler.cpp
@@ -0,0 +1,133 @@
+#include <xmpp/adhoc_commands_handler.hpp>
+#include <xmpp/xmpp_component.hpp>
+
+#include <utils/timed_events.hpp>
+#include <logger/logger.hpp>
+#include <config/config.hpp>
+#include <xmpp/jid.hpp>
+
+#include <iostream>
+
+using namespace std::string_literals;
+
+const std::map<const std::string, const AdhocCommand>& AdhocCommandsHandler::get_commands() const
+{
+  return this->commands;
+}
+
+std::map<const std::string, const AdhocCommand>& AdhocCommandsHandler::get_commands()
+{
+  return this->commands;
+}
+
+XmlNode AdhocCommandsHandler::handle_request(const std::string& executor_jid, XmlNode command_node)
+{
+  std::string action = command_node.get_tag("action");
+  if (action.empty())
+    action = "execute";
+  command_node.del_tag("action");
+
+  Jid jid(executor_jid);
+
+  const std::string node = command_node.get_tag("node");
+  auto command_it = this->commands.find(node);
+  if (command_it == this->commands.end())
+    {
+      XmlNode error(ADHOC_NS":error");
+      error["type"] = "cancel";
+      XmlNode condition(STANZA_NS":item-not-found");
+      condition.close();
+      error.add_child(std::move(condition));
+      error.close();
+      command_node.add_child(std::move(error));
+    }
+  else if (command_it->second.is_admin_only() &&
+           Config::get("admin", "") != jid.local + "@" + jid.domain)
+    {
+      XmlNode error(ADHOC_NS":error");
+      error["type"] = "cancel";
+      XmlNode condition(STANZA_NS":forbidden");
+      condition.close();
+      error.add_child(std::move(condition));
+      error.close();
+      command_node.add_child(std::move(error));
+    }
+  else
+    {
+      std::string sessionid = command_node.get_tag("sessionid");
+      if (sessionid.empty())
+        {                       // create a new session, with a new id
+          sessionid = XmppComponent::next_id();
+          command_node["sessionid"] = sessionid;
+          this->sessions.emplace(std::piecewise_construct,
+                                 std::forward_as_tuple(sessionid, executor_jid),
+                                 std::forward_as_tuple(command_it->second, executor_jid));
+          TimedEventsManager::instance().add_event(TimedEvent(std::chrono::steady_clock::now() + 3600s,
+                                                              std::bind(&AdhocCommandsHandler::remove_session, this, sessionid, executor_jid),
+                                                              "adhocsession"s + sessionid + executor_jid));
+        }
+      auto session_it = this->sessions.find(std::make_pair(sessionid, executor_jid));
+      if (session_it == this->sessions.end())
+        {
+          XmlNode error(ADHOC_NS":error");
+          error["type"] = "modify";
+          XmlNode condition(STANZA_NS":bad-request");
+          condition.close();
+          error.add_child(std::move(condition));
+          error.close();
+          command_node.add_child(std::move(error));
+        }
+      else if (action == "execute" || action == "next" || action == "complete")
+        {
+          // execute the step
+          AdhocSession& session = session_it->second;
+          const AdhocStep& step = session.get_next_step();
+          step(this->xmpp_component, session, command_node);
+          if (session.remaining_steps() == 0 ||
+              session.is_terminated())
+            {
+              this->sessions.erase(session_it);
+              command_node["status"] = "completed";
+              TimedEventsManager::instance().cancel("adhocsession"s + sessionid + executor_jid);
+            }
+          else
+            {
+              command_node["status"] = "executing";
+              XmlNode actions("actions");
+              XmlNode next("next");
+              next.close();
+              actions.add_child(std::move(next));
+              actions.close();
+              command_node.add_child(std::move(actions));
+            }
+        }
+      else if (action == "cancel")
+        {
+          this->sessions.erase(session_it);
+          command_node["status"] = "canceled";
+          TimedEventsManager::instance().cancel("adhocsession"s + sessionid + executor_jid);
+        }
+      else                      // unsupported action
+        {
+          XmlNode error(ADHOC_NS":error");
+          error["type"] = "modify";
+          XmlNode condition(STANZA_NS":bad-request");
+          condition.close();
+          error.add_child(std::move(condition));
+          error.close();
+          command_node.add_child(std::move(error));
+        }
+    }
+  return command_node;
+}
+
+void AdhocCommandsHandler::remove_session(const std::string& session_id, const std::string& initiator_jid)
+{
+  auto session_it = this->sessions.find(std::make_pair(session_id, initiator_jid));
+  if (session_it != this->sessions.end())
+    {
+      this->sessions.erase(session_it);
+      return ;
+    }
+  log_error("Tried to remove ad-hoc session for [" << session_id << ", " << initiator_jid << "] but none found");
+}
diff --git a/louloulibs/xmpp/adhoc_commands_handler.hpp b/louloulibs/xmpp/adhoc_commands_handler.hpp
new file mode 100644
index 0000000..1083c44
--- /dev/null
+++ b/louloulibs/xmpp/adhoc_commands_handler.hpp
@@ -0,0 +1,74 @@
+#ifndef ADHOC_COMMANDS_HANDLER_HPP
+# define ADHOC_COMMANDS_HANDLER_HPP
+
+/**
+ * Manage a list of available AdhocCommands and the list of ongoing
+ * AdhocCommandSessions.
+ */
+
+#include <xmpp/adhoc_command.hpp>
+#include <xmpp/xmpp_stanza.hpp>
+
+#include <utility>
+#include <string>
+#include <map>
+
+class AdhocCommandsHandler
+{
+public:
+  explicit AdhocCommandsHandler(XmppComponent* xmpp_component):
+    xmpp_component(xmpp_component),
+    commands{}
+  { }
+  ~AdhocCommandsHandler() = default;
+  /**
+   * Returns the list of available commands.
+   */
+  const std::map<const std::string, const AdhocCommand>& get_commands() const;
+  /**
+   * This one can be used to add new commands.
+   */
+  std::map<const std::string, const AdhocCommand>& get_commands();
+  /**
+   * Find the requested command, create a new session or use an existing
+   * one, and process the request (provide a new form, an error, or a
+   * result).
+   *
+   * Returns a (moved) XmlNode that will be inserted in the iq response. It
+   * should be a <command/> node containing one or more useful children. If
+   * it contains an <error/> node, the iq response will have an error type.
+   *
+   * Takes a copy of the <command/> node so we can actually edit it and use
+   * it as our return value.
+   */
+  XmlNode handle_request(const std::string& executor_jid, XmlNode command_node);
+  /**
+   * Remove the session from the list. This is done to avoid filling the
+   * memory with waiting session (for example due to a client that starts
+   * multi-steps command but never finishes them).
+   */
+  void remove_session(const std::string& session_id, const std::string& initiator_jid);
+private:
+  /**
+   * A pointer to the XmppComponent, to access to basically anything in the
+   * gateway.
+   */
+  XmppComponent* xmpp_component;
+  /**
+   * The list of all available commands.
+   */
+  std::map<const std::string, const AdhocCommand> commands;
+  /**
+   * The list of all currently on-going commands.
+   *
+   * Of the form: {{session_id, owner_jid}, session}.
+   */
+  std::map<std::pair<const std::string, const std::string>, AdhocSession> sessions;
+
+  AdhocCommandsHandler(const AdhocCommandsHandler&) = delete;
+  AdhocCommandsHandler(AdhocCommandsHandler&&) = delete;
+  AdhocCommandsHandler& operator=(const AdhocCommandsHandler&) = delete;
+  AdhocCommandsHandler& operator=(AdhocCommandsHandler&&) = delete;
+};
+
+#endif // ADHOC_COMMANDS_HANDLER_HPP
diff --git a/louloulibs/xmpp/adhoc_session.cpp b/louloulibs/xmpp/adhoc_session.cpp
new file mode 100644
index 0000000..fc60bb7
--- /dev/null
+++ b/louloulibs/xmpp/adhoc_session.cpp
@@ -0,0 +1,37 @@
+#include <xmpp/adhoc_session.hpp>
+#include <xmpp/adhoc_command.hpp>
+
+#include <assert.h>
+
+AdhocSession::AdhocSession(const AdhocCommand& command, const std::string& jid):
+  command(command),
+  owner_jid(jid),
+  current_step(0),
+  terminated(false)
+{
+}
+
+AdhocSession::~AdhocSession()
+{
+}
+
+const AdhocStep& AdhocSession::get_next_step()
+{
+  assert(this->current_step < this->command.callbacks.size());
+  return this->command.callbacks[this->current_step++];
+}
+
+size_t AdhocSession::remaining_steps() const
+{
+  return this->command.callbacks.size() - this->current_step;
+}
+
+bool AdhocSession::is_terminated() const
+{
+  return this->terminated;
+}
+
+void AdhocSession::terminate()
+{
+  this->terminated = true;
+}
diff --git a/louloulibs/xmpp/adhoc_session.hpp b/louloulibs/xmpp/adhoc_session.hpp
new file mode 100644
index 0000000..ddfb2fe
--- /dev/null
+++ b/louloulibs/xmpp/adhoc_session.hpp
@@ -0,0 +1,70 @@
+#ifndef ADHOC_SESSION_HPP
+# define ADHOC_SESSION_HPP
+
+#include <xmpp/xmpp_stanza.hpp>
+
+#include <functional>
+#include <string>
+
+class XmppComponent;
+
+class AdhocCommand;
+class AdhocSession;
+
+/**
+ * A function executed as an ad-hoc command step. It takes a <command/>
+ * XmlNode and modifies it accordingly (inserting for example an <error/>
+ * node, or a data form…).
+ * TODO fix this:
+ * It also must call one of step_passed(), cancel() etc on the AdhocSession object.
+ */
+typedef std::function<void(XmppComponent*, AdhocSession&, XmlNode&)> AdhocStep;
+
+class AdhocSession
+{
+public:
+  explicit AdhocSession(const AdhocCommand& command, const std::string& jid);
+  ~AdhocSession();
+  /**
+   * Return the function to be executed, found in our AdhocCommand, for the
+   * current_step. And increment the current_step.
+   */
+  const AdhocStep& get_next_step();
+  /**
+   * Return the number of remaining steps.
+   */
+  size_t remaining_steps() const;
+  /**
+   * This may be modified by an AdhocStep, to indicate that this session
+   * should no longer exist, because we encountered an error, and we can't
+   * execute any more step of it.
+   */
+  void terminate();
+  bool is_terminated() const;
+
+private:
+  /**
+   * A reference of the command concerned by this session. Used for example
+   * to get the next step of that command, things like that.
+   */
+  const AdhocCommand& command;
+  /**
+   * The full JID of the XMPP user that created this session by executing
+   * the first step of a command. Only that JID must be allowed to access
+   * this session.
+   */
+  const std::string& owner_jid;
+  /**
+   * The current step we are at. It starts at zero. It is used to index the
+   * associated AdhocCommand::callbacks vector.
+   */
+  size_t current_step;
+  bool terminated;
+
+  AdhocSession(const AdhocSession&) = delete;
+  AdhocSession(AdhocSession&&) = delete;
+  AdhocSession& operator=(const AdhocSession&) = delete;
+  AdhocSession& operator=(AdhocSession&&) = delete;
+};
+
+#endif // ADHOC_SESSION_HPP
diff --git a/louloulibs/xmpp/body.hpp b/louloulibs/xmpp/body.hpp
new file mode 100644
index 0000000..6ac678e
--- /dev/null
+++ b/louloulibs/xmpp/body.hpp
@@ -0,0 +1,12 @@
+#ifndef XMPP_BODY_HPP_INCLUDED
+#define XMPP_BODY_HPP_INCLUDED
+
+namespace Xmpp
+{
+// Contains:
+// - an XMPP-valid UTF-8 body
+// - an XML node representing the XHTML-IM body, or null
+  typedef std::tuple<const std::string, std::unique_ptr<XmlNode>> body;
+}
+
+#endif /* XMPP_BODY_HPP_INCLUDED */
diff --git a/louloulibs/xmpp/jid.cpp b/louloulibs/xmpp/jid.cpp
new file mode 100644
index 0000000..e6fee45
--- /dev/null
+++ b/louloulibs/xmpp/jid.cpp
@@ -0,0 +1,101 @@
+#include <xmpp/jid.hpp>
+#include <algorithm>
+#include <cstring>
+#include <map>
+
+#include <louloulibs.h>
+#ifdef LIBIDN_FOUND
+ #include <stringprep.h>
+#endif
+
+#include <logger/logger.hpp>
+
+Jid::Jid(const std::string& jid)
+{
+  std::string::size_type slash = jid.find('/');
+  if (slash != std::string::npos)
+    {
+      this->resource = jid.substr(slash + 1);
+    }
+
+  std::string::size_type at = jid.find('@');
+  if (at != std::string::npos && at < slash)
+    {
+      this->local = jid.substr(0, at);
+      at++;
+    }
+  else
+    at = 0;
+
+  this->domain = jid.substr(at, slash - at);
+}
+
+#include <iostream>
+
+static constexpr size_t max_jid_part_len = 1023;
+
+std::string jidprep(const std::string& original)
+{
+#ifdef LIBIDN_FOUND
+  using CacheType = std::map<std::string, std::string>;
+  static CacheType cache;
+  std::pair<CacheType::iterator, bool> cached = cache.insert({original, {}});
+  if (std::get<1>(cached) == false)
+    { // Insertion failed: the result is already in the cache, return it
+      return std::get<0>(cached)->second;
+    }
+
+  const std::string error_msg("Failed to convert " + original + " into a valid JID:");
+  Jid jid(original);
+
+  char local[max_jid_part_len] = {};
+  memcpy(local, jid.local.data(), jid.local.size());
+  Stringprep_rc rc = static_cast<Stringprep_rc>(::stringprep(local, max_jid_part_len,
+                     static_cast<Stringprep_profile_flags>(0), stringprep_xmpp_nodeprep));
+  if (rc != STRINGPREP_OK)
+  {
+    log_error(error_msg + stringprep_strerror(rc));
+    return "";
+  }
+
+  char domain[max_jid_part_len] = {};
+  memcpy(domain, jid.domain.data(), jid.domain.size());
+  rc = static_cast<Stringprep_rc>(::stringprep(domain, max_jid_part_len,
+       static_cast<Stringprep_profile_flags>(0), stringprep_nameprep));
+  if (rc != STRINGPREP_OK)
+  {
+    log_error(error_msg + stringprep_strerror(rc));
+    return "";
+  }
+  std::replace_if(std::begin(domain), domain + ::strlen(domain),
+                  [](const char c) -> bool
+                  {
+                    return !((c >= 'a' && c <= 'z') || c == '-' ||
+                      (c >= '0' && c <= '9') || c == '.');
+                  }, '-');
+
+  // If there is no resource, stop here
+  if (jid.resource.empty())
+    {
+      std::get<0>(cached)->second = std::string(local) + "@" + domain;
+      return std::get<0>(cached)->second;
+    }
+
+  // Otherwise, also process the resource part
+  char resource[max_jid_part_len] = {};
+  memcpy(resource, jid.resource.data(), jid.resource.size());
+  rc = static_cast<Stringprep_rc>(::stringprep(resource, max_jid_part_len,
+       static_cast<Stringprep_profile_flags>(0), stringprep_xmpp_resourceprep));
+  if (rc != STRINGPREP_OK)
+    {
+      log_error(error_msg + stringprep_strerror(rc));
+      return "";
+    }
+  std::get<0>(cached)->second = std::string(local) + "@" + domain + "/" + resource;
+  return std::get<0>(cached)->second;
+
+#else
+  (void)original;
+  return "";
+#endif
+}
diff --git a/louloulibs/xmpp/jid.hpp b/louloulibs/xmpp/jid.hpp
new file mode 100644
index 0000000..b6975a2
--- /dev/null
+++ b/louloulibs/xmpp/jid.hpp
@@ -0,0 +1,36 @@
+#ifndef JID_INCLUDED
+# define JID_INCLUDED
+
+#include <string>
+
+/**
+ * Parse a JID into its different subart
+ */
+class Jid
+{
+public:
+  explicit Jid(const std::string& jid);
+
+  std::string domain;
+  std::string local;
+  std::string resource;
+
+private:
+  Jid(const Jid&) = delete;
+  Jid(Jid&&) = delete;
+  Jid& operator=(const Jid&) = delete;
+  Jid& operator=(Jid&&) = delete;
+};
+
+/**
+ * Prepare the given UTF-8 string according to the XMPP node stringprep
+ * identifier profile.  This is used to send properly-formed JID to the XMPP
+ * server.
+ *
+ * If the stringprep library is not found, we return an empty string.  When
+ * this function is used, the result must always be checked for an empty
+ * value, and if this is the case it must not be used as a JID.
+ */
+std::string jidprep(const std::string& original);
+
+#endif // JID_INCLUDED
diff --git a/louloulibs/xmpp/roster.cpp b/louloulibs/xmpp/roster.cpp
new file mode 100644
index 0000000..a14a384
--- /dev/null
+++ b/louloulibs/xmpp/roster.cpp
@@ -0,0 +1,21 @@
+#include <xmpp/roster.hpp>
+
+RosterItem::RosterItem(const std::string& jid, const std::string& name,
+                       std::vector<std::string>& groups):
+  jid(jid),
+  name(name),
+  groups(groups)
+{
+}
+
+RosterItem::RosterItem(const std::string& jid, const std::string& name):
+  jid(jid),
+  name(name),
+  groups{}
+{
+}
+
+void Roster::clear()
+{
+  this->items.clear();
+}
diff --git a/louloulibs/xmpp/roster.hpp b/louloulibs/xmpp/roster.hpp
new file mode 100644
index 0000000..0aebca5
--- /dev/null
+++ b/louloulibs/xmpp/roster.hpp
@@ -0,0 +1,71 @@
+#ifndef ROSTER_HPP_INCLUDED
+#define ROSTER_HPP_INCLUDED
+
+#include <algorithm>
+#include <string>
+#include <vector>
+
+class RosterItem
+{
+public:
+  RosterItem(const std::string& jid, const std::string& name,
+             std::vector<std::string>& groups);
+  RosterItem(const std::string& jid, const std::string& name);
+  RosterItem() = default;
+  ~RosterItem() = default;
+  RosterItem(const RosterItem&) = default;
+  RosterItem(RosterItem&&) = default;
+  RosterItem& operator=(const RosterItem&) = default;
+  RosterItem& operator=(RosterItem&&) = default;
+
+  std::string jid;
+  std::string name;
+  std::vector<std::string> groups;
+
+private:
+};
+
+/**
+ * Keep track of the last known stat of a JID's roster
+ */
+class Roster
+{
+public:
+  Roster() = default;
+  ~Roster() = default;
+
+  void clear();
+
+  template <typename... ArgsType>
+  RosterItem* add_item(ArgsType&&... args)
+  {
+    this->items.emplace_back(std::forward<ArgsType>(args)...);
+    auto it = this->items.end() - 1;
+    return &*it;
+  }
+  RosterItem* get_item(const std::string& jid)
+  {
+    auto it = std::find_if(this->items.begin(), this->items.end(),
+                           [this, &jid](const auto& item)
+                           {
+                             return item.jid == jid;
+                           });
+    if (it != this->items.end())
+      return &*it;
+    return nullptr;
+  }
+  const std::vector<RosterItem>& get_items() const
+  {
+    return this->items;
+  }
+
+private:
+  std::vector<RosterItem> items;
+
+  Roster(const Roster&) = delete;
+  Roster(Roster&&) = delete;
+  Roster& operator=(const Roster&) = delete;
+  Roster& operator=(Roster&&) = delete;
+};
+
+#endif /* ROSTER_HPP_INCLUDED */
diff --git a/louloulibs/xmpp/xmpp_component.cpp b/louloulibs/xmpp/xmpp_component.cpp
new file mode 100644
index 0000000..1048f86
--- /dev/null
+++ b/louloulibs/xmpp/xmpp_component.cpp
@@ -0,0 +1,716 @@
+#include <utils/timed_events.hpp>
+#include <utils/scopeguard.hpp>
+#include <utils/tolower.hpp>
+#include <logger/logger.hpp>
+
+#include <xmpp/xmpp_component.hpp>
+#include <config/config.hpp>
+#include <xmpp/jid.hpp>
+#include <utils/sha1.hpp>
+
+#include <stdexcept>
+#include <iostream>
+#include <set>
+
+#include <stdio.h>
+
+#include <uuid.h>
+
+#include <louloulibs.h>
+#ifdef SYSTEMD_FOUND
+# include <systemd/sd-daemon.h>
+#endif
+
+using namespace std::string_literals;
+
+static std::set<std::string> kickable_errors{
+    "gone",
+    "internal-server-error",
+    "item-not-found",
+    "jid-malformed",
+    "recipient-unavailable",
+    "redirect",
+    "remote-server-not-found",
+    "remote-server-timeout",
+    "service-unavailable",
+    "malformed-error"
+    };
+
+XmppComponent::XmppComponent(std::shared_ptr<Poller> poller, const std::string& hostname, const std::string& secret):
+  TCPSocketHandler(poller),
+  ever_auth(false),
+  first_connection_try(true),
+  secret(secret),
+  authenticated(false),
+  doc_open(false),
+  served_hostname(hostname),
+  stanza_handlers{},
+  adhoc_commands_handler(this)
+{
+  this->parser.add_stream_open_callback(std::bind(&XmppComponent::on_remote_stream_open, this,
+                                                  std::placeholders::_1));
+  this->parser.add_stanza_callback(std::bind(&XmppComponent::on_stanza, this,
+                                                  std::placeholders::_1));
+  this->parser.add_stream_close_callback(std::bind(&XmppComponent::on_remote_stream_close, this,
+                                                  std::placeholders::_1));
+  this->stanza_handlers.emplace("handshake",
+                                std::bind(&XmppComponent::handle_handshake, this,std::placeholders::_1));
+  this->stanza_handlers.emplace("error",
+                                std::bind(&XmppComponent::handle_error, this,std::placeholders::_1));
+}
+
+void XmppComponent::start()
+{
+  this->connect("127.0.0.1", Config::get("port", "5347"), false);
+}
+
+bool XmppComponent::is_document_open() const
+{
+  return this->doc_open;
+}
+
+void XmppComponent::send_stanza(const Stanza& stanza)
+{
+  std::string str = stanza.to_string();
+  log_debug("XMPP SENDING: " << str);
+  this->send_data(std::move(str));
+}
+
+void XmppComponent::on_connection_failed(const std::string& reason)
+{
+  this->first_connection_try = false;
+  log_error("Failed to connect to the XMPP server: " << reason);
+#ifdef SYSTEMD_FOUND
+  sd_notifyf(0, "STATUS=Failed to connect to the XMPP server: %s", reason.data());
+#endif
+}
+
+void XmppComponent::on_connected()
+{
+  log_info("connected to XMPP server");
+  this->first_connection_try = true;
+  XmlNode node("", nullptr);
+  node.set_name("stream:stream");
+  node["xmlns"] = COMPONENT_NS;
+  node["xmlns:stream"] = STREAM_NS;
+  node["to"] = this->served_hostname;
+  this->send_stanza(node);
+  this->doc_open = true;
+  // We may have some pending data to send: this happens when we try to send
+  // some data before we are actually connected.  We send that data right now, if any
+  this->send_pending_data();
+}
+
+void XmppComponent::on_connection_close(const std::string& error)
+{
+  if (error.empty())
+    {
+      log_info("XMPP server closed connection");
+    }
+  else
+    {
+      log_info("XMPP server closed connection: " << error);
+    }
+}
+
+void XmppComponent::parse_in_buffer(const size_t size)
+{
+  if (!this->in_buf.empty())
+    { // This may happen if the parser could not allocate enough space for
+      // us. We try to feed it the data that was read into our in_buf
+      // instead. If this fails again we are in trouble.
+      this->parser.feed(this->in_buf.data(), this->in_buf.size(), false);
+      this->in_buf.clear();
+    }
+  else
+    { // Just tell the parser to parse the data that was placed into the
+      // buffer it provided to us with GetBuffer
+      this->parser.parse(size, false);
+    }
+}
+
+void XmppComponent::on_remote_stream_open(const XmlNode& node)
+{
+  log_debug("XMPP DOCUMENT OPEN: " << node.to_string());
+  this->stream_id = node.get_tag("id");
+  if (this->stream_id.empty())
+    {
+      log_error("Error: no attribute 'id' found");
+      this->send_stream_error("bad-format", "missing 'id' attribute");
+      this->close_document();
+      return ;
+    }
+
+  // Try to authenticate
+  char digest[HASH_LENGTH * 2 + 1];
+  sha1nfo sha1;
+  sha1_init(&sha1);
+  sha1_write(&sha1, this->stream_id.data(), this->stream_id.size());
+  sha1_write(&sha1, this->secret.data(),  this->secret.size());
+  const uint8_t* result = sha1_result(&sha1);
+  for (int i=0; i < HASH_LENGTH; i++)
+    sprintf(digest + (i*2), "%02x", result[i]);
+  digest[HASH_LENGTH * 2] = '\0';
+
+  Stanza handshake(COMPONENT_NS":handshake");
+  handshake.set_inner(digest);
+  handshake.close();
+  this->send_stanza(handshake);
+}
+
+void XmppComponent::on_remote_stream_close(const XmlNode& node)
+{
+  log_debug("XMPP DOCUMENT CLOSE " << node.to_string());
+  this->doc_open = false;
+}
+
+void XmppComponent::reset()
+{
+  this->parser.reset();
+}
+
+void XmppComponent::on_stanza(const Stanza& stanza)
+{
+  log_debug("XMPP RECEIVING: " << stanza.to_string());
+  std::function<void(const Stanza&)> handler;
+  try
+    {
+      handler = this->stanza_handlers.at(stanza.get_name());
+    }
+  catch (const std::out_of_range& exception)
+    {
+      log_warning("No handler for stanza of type " << stanza.get_name());
+      return;
+    }
+  handler(stanza);
+}
+
+void XmppComponent::send_stream_error(const std::string& name, const std::string& explanation)
+{
+  XmlNode node("stream:error", nullptr);
+  XmlNode error(name, nullptr);
+  error["xmlns"] = STREAM_NS;
+  if (!explanation.empty())
+    error.set_inner(explanation);
+  error.close();
+  node.add_child(std::move(error));
+  node.close();
+  this->send_stanza(node);
+}
+
+void XmppComponent::send_stanza_error(const std::string& kind, const std::string& to, const std::string& from,
+                                      const std::string& id, const std::string& error_type,
+                                      const std::string& defined_condition, const std::string& text,
+                                      const bool fulljid)
+{
+  Stanza node(kind);
+  if (!to.empty())
+    node["to"] = to;
+  if (!from.empty())
+    {
+      if (fulljid)
+        node["from"] = from;
+      else
+        node["from"] = from + "@" + this->served_hostname;
+    }
+  if (!id.empty())
+    node["id"] = id;
+  node["type"] = "error";
+  XmlNode error("error");
+  error["type"] = error_type;
+  XmlNode inner_error(defined_condition);
+  inner_error["xmlns"] = STANZA_NS;
+  inner_error.close();
+  error.add_child(std::move(inner_error));
+  if (!text.empty())
+    {
+      XmlNode text_node("text");
+      text_node["xmlns"] = STANZA_NS;
+      text_node.set_inner(text);
+      text_node.close();
+      error.add_child(std::move(text_node));
+    }
+  error.close();
+  node.add_child(std::move(error));
+  node.close();
+  this->send_stanza(node);
+}
+
+void XmppComponent::close_document()
+{
+  log_debug("XMPP SENDING: </stream:stream>");
+  this->send_data("</stream:stream>");
+  this->doc_open = false;
+}
+
+void XmppComponent::handle_handshake(const Stanza& stanza)
+{
+  (void)stanza;
+  this->authenticated = true;
+  this->ever_auth = true;
+  log_info("Authenticated with the XMPP server");
+#ifdef SYSTEMD_FOUND
+  sd_notify(0, "READY=1");
+  // Install an event that sends a keepalive to systemd.  If biboumi crashes
+  // or hangs for too long, systemd will restart it.
+  uint64_t usec;
+  if (sd_watchdog_enabled(0, &usec) > 0)
+    {
+      TimedEventsManager::instance().add_event(TimedEvent(
+             std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::microseconds(usec / 2)),
+             []() { sd_notify(0, "WATCHDOG=1"); }));
+    }
+#endif
+  this->after_handshake();
+}
+
+void XmppComponent::handle_error(const Stanza& stanza)
+{
+  XmlNode* text = stanza.get_child("text", STREAMS_NS);
+  std::string error_message("Unspecified error");
+  if (text)
+    error_message = text->get_inner();
+  log_error("Stream error received from the XMPP server: " << error_message);
+#ifdef SYSTEMD_FOUND
+  if (!this->ever_auth)
+    sd_notifyf(0, "STATUS=Failed to authenticate to the XMPP server: %s", error_message.data());
+#endif
+
+}
+
+void* XmppComponent::get_receive_buffer(const size_t size) const
+{
+  return this->parser.get_buffer(size);
+}
+
+void XmppComponent::send_message(const std::string& from, Xmpp::body&& body, const std::string& to, const std::string& type, const bool fulljid)
+{
+  XmlNode node("message");
+  node["to"] = to;
+  if (fulljid)
+    node["from"] = from;
+  else
+    node["from"] = from + "@" + this->served_hostname;
+  if (!type.empty())
+    node["type"] = type;
+  XmlNode body_node("body");
+  body_node.set_inner(std::get<0>(body));
+  body_node.close();
+  node.add_child(std::move(body_node));
+  if (std::get<1>(body))
+    {
+      XmlNode html("html");
+      html["xmlns"] = XHTMLIM_NS;
+      // Pass the ownership of the pointer to this xmlnode
+      html.add_child(std::get<1>(body).release());
+      html.close();
+      node.add_child(std::move(html));
+    }
+  node.close();
+  this->send_stanza(node);
+}
+
+void XmppComponent::send_user_join(const std::string& from,
+                                   const std::string& nick,
+                                   const std::string& realjid,
+                                   const std::string& affiliation,
+                                   const std::string& role,
+                                   const std::string& to,
+                                   const bool self)
+{
+  XmlNode node("presence");
+  node["to"] = to;
+  node["from"] = from + "@" + this->served_hostname + "/" + nick;
+
+  XmlNode x("x");
+  x["xmlns"] = MUC_USER_NS;
+
+  XmlNode item("item");
+  if (!affiliation.empty())
+    item["affiliation"] = affiliation;
+  if (!role.empty())
+    item["role"] = role;
+  if (!realjid.empty())
+    {
+      const std::string preped_jid = jidprep(realjid);
+      if (!preped_jid.empty())
+        item["jid"] = preped_jid;
+    }
+  item.close();
+  x.add_child(std::move(item));
+
+  if (self)
+    {
+      XmlNode status("status");
+      status["code"] = "110";
+      status.close();
+      x.add_child(std::move(status));
+    }
+  x.close();
+  node.add_child(std::move(x));
+  node.close();
+  this->send_stanza(node);
+}
+
+void XmppComponent::send_invalid_room_error(const std::string& muc_name,
+                                            const std::string& nick,
+                                            const std::string& to)
+{
+  Stanza presence("presence");
+  if (!muc_name.empty())
+    presence["from"] = muc_name + "@" + this->served_hostname + "/" + nick;
+  else
+    presence["from"] = this->served_hostname;
+  presence["to"] = to;
+  presence["type"] = "error";
+  XmlNode x("x");
+  x["xmlns"] = MUC_NS;
+  x.close();
+  presence.add_child(std::move(x));
+  XmlNode error("error");
+  error["by"] = muc_name + "@" + this->served_hostname;
+  error["type"] = "cancel";
+  XmlNode item_not_found("item-not-found");
+  item_not_found["xmlns"] = STANZA_NS;
+  item_not_found.close();
+  error.add_child(std::move(item_not_found));
+  XmlNode text("text");
+  text["xmlns"] = STANZA_NS;
+  text["xml:lang"] = "en";
+  text.set_inner(muc_name +
+                 " is not a valid IRC channel name. A correct room jid is of the form: #<chan>%<server>@" +
+                 this->served_hostname);
+  text.close();
+  error.add_child(std::move(text));
+  error.close();
+  presence.add_child(std::move(error));
+  presence.close();
+  this->send_stanza(presence);
+}
+
+void XmppComponent::send_invalid_user_error(const std::string& user_name, const std::string& to)
+{
+  Stanza message("message");
+  message["from"] = user_name + "@" + this->served_hostname;
+  message["to"] = to;
+  message["type"] = "error";
+  XmlNode x("x");
+  x["xmlns"] = MUC_NS;
+  x.close();
+  message.add_child(std::move(x));
+  XmlNode error("error");
+  error["type"] = "cancel";
+  XmlNode item_not_found("item-not-found");
+  item_not_found["xmlns"] = STANZA_NS;
+  item_not_found.close();
+  error.add_child(std::move(item_not_found));
+  XmlNode text("text");
+  text["xmlns"] = STANZA_NS;
+  text["xml:lang"] = "en";
+  text.set_inner(user_name +
+                 " is not a valid IRC user name. A correct user jid is of the form: <nick>!<server>@" +
+                 this->served_hostname);
+  text.close();
+  error.add_child(std::move(text));
+  error.close();
+  message.add_child(std::move(error));
+  message.close();
+  this->send_stanza(message);
+}
+
+void XmppComponent::send_topic(const std::string& from, Xmpp::body&& topic, const std::string& to)
+{
+  XmlNode message("message");
+  message["to"] = to;
+  message["from"] = from + "@" + this->served_hostname;
+  message["type"] = "groupchat";
+  XmlNode subject("subject");
+  subject.set_inner(std::get<0>(topic));
+  subject.close();
+  message.add_child(std::move(subject));
+  message.close();
+  this->send_stanza(message);
+}
+
+void XmppComponent::send_muc_message(const std::string& muc_name, const std::string& nick, Xmpp::body&& xmpp_body, const std::string& jid_to)
+{
+  Stanza message("message");
+  message["to"] = jid_to;
+  if (!nick.empty())
+    message["from"] = muc_name + "@" + this->served_hostname + "/" + nick;
+  else // Message from the room itself
+    message["from"] = muc_name + "@" + this->served_hostname;
+  message["type"] = "groupchat";
+  XmlNode body("body");
+  body.set_inner(std::get<0>(xmpp_body));
+  body.close();
+  message.add_child(std::move(body));
+  if (std::get<1>(xmpp_body))
+    {
+      XmlNode html("html");
+      html["xmlns"] = XHTMLIM_NS;
+      // Pass the ownership of the pointer to this xmlnode
+      html.add_child(std::get<1>(xmpp_body).release());
+      html.close();
+      message.add_child(std::move(html));
+    }
+  message.close();
+  this->send_stanza(message);
+}
+
+void XmppComponent::send_muc_leave(const std::string& muc_name, std::string&& nick, Xmpp::body&& message, const std::string& jid_to, const bool self)
+{
+  Stanza presence("presence");
+  presence["to"] = jid_to;
+  presence["from"] = muc_name + "@" + this->served_hostname + "/" + nick;
+  presence["type"] = "unavailable";
+  const std::string message_str = std::get<0>(message);
+  XmlNode x("x");
+  x["xmlns"] = MUC_USER_NS;
+  if (self)
+    {
+      XmlNode status("status");
+      status["code"] = "110";
+      status.close();
+      x.add_child(std::move(status));
+    }
+  x.close();
+  presence.add_child(std::move(x));
+  if (!message_str.empty())
+    {
+      XmlNode status("status");
+      status.set_inner(message_str);
+      status.close();
+      presence.add_child(std::move(status));
+    }
+  presence.close();
+  this->send_stanza(presence);
+}
+
+void XmppComponent::send_nick_change(const std::string& muc_name,
+                                     const std::string& old_nick,
+                                     const std::string& new_nick,
+                                     const std::string& affiliation,
+                                     const std::string& role,
+                                     const std::string& jid_to,
+                                     const bool self)
+{
+  Stanza presence("presence");
+  presence["to"] = jid_to;
+  presence["from"] = muc_name + "@" + this->served_hostname + "/" + old_nick;
+  presence["type"] = "unavailable";
+  XmlNode x("x");
+  x["xmlns"] = MUC_USER_NS;
+  XmlNode item("item");
+  item["nick"] = new_nick;
+  item.close();
+  x.add_child(std::move(item));
+  XmlNode status("status");
+  status["code"] = "303";
+  status.close();
+  x.add_child(std::move(status));
+  if (self)
+    {
+      XmlNode status2("status");
+      status2["code"] = "110";
+      status2.close();
+      x.add_child(std::move(status2));
+    }
+  x.close();
+  presence.add_child(std::move(x));
+  presence.close();
+  this->send_stanza(presence);
+
+  this->send_user_join(muc_name, new_nick, "", affiliation, role, jid_to, self);
+}
+
+void XmppComponent::kick_user(const std::string& muc_name,
+                                  const std::string& target,
+                                  const std::string& txt,
+                                  const std::string& author,
+                                  const std::string& jid_to)
+{
+  Stanza presence("presence");
+  presence["from"] = muc_name + "@" + this->served_hostname + "/" + target;
+  presence["to"] = jid_to;
+  presence["type"] = "unavailable";
+  XmlNode x("x");
+  x["xmlns"] = MUC_USER_NS;
+  XmlNode item("item");
+  item["affiliation"] = "none";
+  item["role"] = "none";
+  XmlNode actor("actor");
+  actor["nick"] = author;
+  actor["jid"] = author; // backward compatibility with old clients
+  actor.close();
+  item.add_child(std::move(actor));
+  XmlNode reason("reason");
+  reason.set_inner(txt);
+  reason.close();
+  item.add_child(std::move(reason));
+  item.close();
+  x.add_child(std::move(item));
+  XmlNode status("status");
+  status["code"] = "307";
+  status.close();
+  x.add_child(std::move(status));
+  x.close();
+  presence.add_child(std::move(x));
+  presence.close();
+  this->send_stanza(presence);
+}
+
+void XmppComponent::send_presence_error(const std::string& muc_name,
+                                        const std::string& nickname,
+                                        const std::string& jid_to,
+                                        const std::string& type,
+                                        const std::string& condition,
+                                        const std::string& error_code,
+                                        const std::string& /* text */)
+{
+  Stanza presence("presence");
+  presence["from"] = muc_name + "@" + this->served_hostname + "/" + nickname;
+  presence["to"] = jid_to;
+  presence["type"] = "error";
+  XmlNode x("x");
+  x["xmlns"] = MUC_NS;
+  x.close();
+  presence.add_child(std::move(x));
+  XmlNode error("error");
+  error["by"] = muc_name + "@" + this->served_hostname;
+  error["type"] = type;
+  if (!error_code.empty())
+    error["code"] = error_code;
+  XmlNode subnode(condition);
+  subnode["xmlns"] = STANZA_NS;
+  subnode.close();
+  error.add_child(std::move(subnode));
+  error.close();
+  presence.add_child(std::move(error));
+  presence.close();
+  this->send_stanza(presence);
+}
+
+void XmppComponent::send_affiliation_role_change(const std::string& muc_name,
+                                                 const std::string& target,
+                                                 const std::string& affiliation,
+                                                 const std::string& role,
+                                                 const std::string& jid_to)
+{
+  Stanza presence("presence");
+  presence["from"] = muc_name + "@" + this->served_hostname + "/" + target;
+  presence["to"] = jid_to;
+  XmlNode x("x");
+  x["xmlns"] = MUC_USER_NS;
+  XmlNode item("item");
+  item["affiliation"] = affiliation;
+  item["role"] = role;
+  item.close();
+  x.add_child(std::move(item));
+  x.close();
+  presence.add_child(std::move(x));
+  presence.close();
+  this->send_stanza(presence);
+}
+
+void XmppComponent::send_version(const std::string& id, const std::string& jid_to, const std::string& jid_from,
+                                 const std::string& version)
+{
+  Stanza iq("iq");
+  iq["type"] = "result";
+  iq["id"] = id;
+  iq["to"] = jid_to;
+  iq["from"] = jid_from;
+  XmlNode query("query");
+  query["xmlns"] = VERSION_NS;
+  if (version.empty())
+    {
+      XmlNode name("name");
+      name.set_inner("biboumi");
+      name.close();
+      query.add_child(std::move(name));
+      XmlNode version("version");
+      version.set_inner(SOFTWARE_VERSION);
+      version.close();
+      query.add_child(std::move(version));
+      XmlNode os("os");
+      os.set_inner(SYSTEM_NAME);
+      os.close();
+      query.add_child(std::move(os));
+    }
+  else
+    {
+      XmlNode name("name");
+      name.set_inner(version);
+      name.close();
+      query.add_child(std::move(name));
+    }
+  query.close();
+  iq.add_child(std::move(query));
+  iq.close();
+  this->send_stanza(iq);
+}
+
+void XmppComponent::send_adhoc_commands_list(const std::string& id, const std::string& requester_jid)
+{
+  Stanza iq("iq");
+  iq["type"] = "result";
+  iq["id"] = id;
+  iq["to"] = requester_jid;
+  iq["from"] = this->served_hostname;
+  XmlNode query("query");
+  query["xmlns"] = DISCO_ITEMS_NS;
+  query["node"] = ADHOC_NS;
+  for (const auto& kv: this->adhoc_commands_handler.get_commands())
+    {
+      XmlNode item("item");
+      item["jid"] = this->served_hostname;
+      item["node"] = kv.first;
+      item["name"] = kv.second.name;
+      item.close();
+      query.add_child(std::move(item));
+    }
+  query.close();
+  iq.add_child(std::move(query));
+  iq.close();
+  this->send_stanza(iq);
+}
+
+void XmppComponent::send_iq_version_request(const std::string& from,
+                                            const std::string& jid_to)
+{
+  Stanza iq("iq");
+  iq["type"] = "get";
+  iq["id"] = "version_"s + XmppComponent::next_id();
+  iq["from"] = from + "@" + this->served_hostname;
+  iq["to"] = jid_to;
+  XmlNode query("query");
+  query["xmlns"] = VERSION_NS;
+  query.close();
+  iq.add_child(std::move(query));
+  iq.close();
+  this->send_stanza(iq);
+}
+
+void XmppComponent::send_iq_result(const std::string& id, const std::string& to_jid, const std::string& from_local_part)
+{
+  Stanza iq("iq");
+  if (!from_local_part.empty())
+    iq["from"] = from_local_part + "@" + this->served_hostname;
+  else
+    iq["from"] = this->served_hostname;
+  iq["to"] = to_jid;
+  iq["id"] = id;
+  iq["type"] = "result";
+  iq.close();
+  this->send_stanza(iq);
+}
+
+std::string XmppComponent::next_id()
+{
+  char uuid_str[37];
+  uuid_t uuid;
+  uuid_generate(uuid);
+  uuid_unparse(uuid, uuid_str);
+  return uuid_str;
+}
diff --git a/louloulibs/xmpp/xmpp_component.hpp b/louloulibs/xmpp/xmpp_component.hpp
new file mode 100644
index 0000000..1bea54e
--- /dev/null
+++ b/louloulibs/xmpp/xmpp_component.hpp
@@ -0,0 +1,240 @@
+#ifndef XMPP_COMPONENT_INCLUDED
+# define XMPP_COMPONENT_INCLUDED
+
+#include <xmpp/adhoc_commands_handler.hpp>
+#include <network/tcp_socket_handler.hpp>
+#include <xmpp/xmpp_parser.hpp>
+#include <xmpp/body.hpp>
+
+#include <unordered_map>
+#include <memory>
+#include <string>
+#include <map>
+
+#define STREAM_NS        "http://etherx.jabber.org/streams"
+#define COMPONENT_NS     "jabber:component:accept"
+#define MUC_NS           "http://jabber.org/protocol/muc"
+#define MUC_USER_NS      MUC_NS"#user"
+#define MUC_ADMIN_NS     MUC_NS"#admin"
+#define DISCO_NS         "http://jabber.org/protocol/disco"
+#define DISCO_ITEMS_NS   DISCO_NS"#items"
+#define DISCO_INFO_NS    DISCO_NS"#info"
+#define XHTMLIM_NS       "http://jabber.org/protocol/xhtml-im"
+#define STANZA_NS        "urn:ietf:params:xml:ns:xmpp-stanzas"
+#define STREAMS_NS       "urn:ietf:params:xml:ns:xmpp-streams"
+#define VERSION_NS       "jabber:iq:version"
+#define ADHOC_NS         "http://jabber.org/protocol/commands"
+#define PING_NS          "urn:xmpp:ping"
+
+/**
+ * An XMPP component, communicating with an XMPP server using the protocole
+ * described in XEP-0114: Jabber Component Protocol
+ *
+ * TODO: implement XEP-0225: Component Connections
+ */
+class XmppComponent: public TCPSocketHandler
+{
+public:
+  explicit XmppComponent(std::shared_ptr<Poller> poller, const std::string& hostname, const std::string& secret);
+  virtual ~XmppComponent() = default;
+
+  void on_connection_failed(const std::string& reason) override final;
+  void on_connected() override final;
+  void on_connection_close(const std::string& error) override final;
+  void parse_in_buffer(const size_t size) override final;
+
+  /**
+   * Returns a unique id, to be used in the 'id' element of our iq stanzas.
+   */
+  static std::string next_id();
+  bool is_document_open() const;
+  /**
+   * Connect to the XMPP server.
+   */
+  void start();
+  /**
+   * Reset the component so we can use the component on a new XMPP stream
+   */
+  void reset();
+  /**
+   * Serialize the stanza and add it to the out_buf to be sent to the
+   * server.
+   */
+  void send_stanza(const Stanza& stanza);
+  /**
+   * Handle the opening of the remote stream
+   */
+  void on_remote_stream_open(const XmlNode& node);
+  /**
+   * Handle the closing of the remote stream
+   */
+  void on_remote_stream_close(const XmlNode& node);
+  /**
+   * Handle received stanzas
+   */
+  void on_stanza(const Stanza& stanza);
+  /**
+   * Send an error stanza. Message being the name of the element inside the
+   * stanza, and explanation being a short human-readable sentence
+   * describing the error.
+   */
+  void send_stream_error(const std::string& message, const std::string& explanation);
+  /**
+   * Send error stanza, described in http://xmpp.org/rfcs/rfc6120.html#stanzas-error
+   */
+  void send_stanza_error(const std::string& kind, const std::string& to, const std::string& from,
+                         const std::string& id, const std::string& error_type,
+                         const std::string& defined_condition, const std::string& text,
+                         const bool fulljid=true);
+  /**
+   * Send the closing signal for our document (not closing the connection though).
+   */
+  void close_document();
+  /**
+   * Send a message from from@served_hostname, with the given body
+   *
+   * If fulljid is false, the provided 'from' doesn't contain the
+   * server-part of the JID and must be added.
+   */
+  void send_message(const std::string& from, Xmpp::body&& body,
+                    const std::string& to, const std::string& type,
+                    const bool fulljid=false);
+  /**
+   * Send a join from a new participant
+   */
+  void send_user_join(const std::string& from,
+                      const std::string& nick,
+                      const std::string& realjid,
+                      const std::string& affiliation,
+                      const std::string& role,
+                      const std::string& to,
+                      const bool self);
+  /**
+   * Send an error to indicate that the user tried to join an invalid room
+   */
+  void send_invalid_room_error(const std::string& muc_jid,
+                               const std::string& nick,
+                               const std::string& to);
+  /**
+   * Send an error to indicate that the user tried to send a message to an
+   * invalid user.
+   */
+  void send_invalid_user_error(const std::string& user_name,
+                               const std::string& to);
+  /**
+   * Send the MUC topic to the user
+   */
+  void send_topic(const std::string& from, Xmpp::body&& xmpp_topic, const std::string& to);
+  /**
+   * Send a (non-private) message to the MUC
+   */
+  void send_muc_message(const std::string& muc_name, const std::string& nick, Xmpp::body&& body, const std::string& jid_to);
+  /**
+   * Send an unavailable presence for this nick
+   */
+  void send_muc_leave(const std::string& muc_name, std::string&& nick, Xmpp::body&& message, const std::string& jid_to, const bool self);
+  /**
+   * Indicate that a participant changed his nick
+   */
+  void send_nick_change(const std::string& muc_name,
+                        const std::string& old_nick,
+                        const std::string& new_nick,
+                        const std::string& affiliation,
+                        const std::string& role,
+                        const std::string& jid_to,
+                        const bool self);
+  /**
+   * An user is kicked from a room
+   */
+  void kick_user(const std::string& muc_name,
+                     const std::string& target,
+                     const std::string& reason,
+                     const std::string& author,
+                     const std::string& jid_to);
+  /**
+   * Send a generic presence error
+   */
+  void send_presence_error(const std::string& muc_name,
+                           const std::string& nickname,
+                           const std::string& jid_to,
+                           const std::string& type,
+                           const std::string& condition,
+                           const std::string& error_code,
+                           const std::string& text);
+  /**
+   * Send a presence from the MUC indicating a change in the role and/or
+   * affiliation of a participant
+   */
+  void send_affiliation_role_change(const std::string& muc_name,
+                                    const std::string& target,
+                                    const std::string& affiliation,
+                                    const std::string& role,
+                                    const std::string& jid_to);
+  /**
+   * Send a result IQ with the gateway disco informations.
+   */
+  void send_self_disco_info(const std::string& id, const std::string& jid_to);
+  /**
+   * Send a result IQ with the given version, or the gateway version if the
+   * passed string is empty.
+   */
+  void send_version(const std::string& id, const std::string& jid_to, const std::string& jid_from,
+                    const std::string& version="");
+  /**
+   * Send the list of all available ad-hoc commands to that JID. The list is
+   * different depending on what JID made the request.
+   */
+  void send_adhoc_commands_list(const std::string& id, const std::string& requester_jid);
+  /**
+   * Send an iq version request
+   */
+  void send_iq_version_request(const std::string& from,
+                               const std::string& jid_to);
+  /**
+   * Send an empty iq of type result
+   */
+  void send_iq_result(const std::string& id, const std::string& to_jid, const std::string& from);
+
+  void handle_handshake(const Stanza& stanza);
+  void handle_error(const Stanza& stanza);
+
+  virtual void after_handshake() {}
+
+  /**
+   * Whether or not we ever succeeded our authentication to the XMPP server
+   */
+  bool ever_auth;
+  /**
+   * Whether or not this is the first consecutive try on connecting to the
+   * XMPP server.  We use this to delay the connection attempt for a few
+   * seconds, if it is not the first try.
+   */
+  bool first_connection_try;
+
+private:
+  /**
+   * Return a buffer provided by the XML parser, to read data directly into
+   * it, and avoiding some unnecessary copy.
+   */
+  void* get_receive_buffer(const size_t size) const override final;
+  XmppParser parser;
+  std::string stream_id;
+  std::string secret;
+  bool authenticated;
+  /**
+   * Whether or not OUR XMPP document is open
+   */
+  bool doc_open;
+protected:
+  std::string served_hostname;
+
+  std::unordered_map<std::string, std::function<void(const Stanza&)>> stanza_handlers;
+  AdhocCommandsHandler adhoc_commands_handler;
+
+  XmppComponent(const XmppComponent&) = delete;
+  XmppComponent(XmppComponent&&) = delete;
+  XmppComponent& operator=(const XmppComponent&) = delete;
+  XmppComponent& operator=(XmppComponent&&) = delete;
+};
+
+#endif // XMPP_COMPONENT_INCLUDED
diff --git a/louloulibs/xmpp/xmpp_parser.cpp b/louloulibs/xmpp/xmpp_parser.cpp
new file mode 100644
index 0000000..6bb0d28
--- /dev/null
+++ b/louloulibs/xmpp/xmpp_parser.cpp
@@ -0,0 +1,169 @@
+#include <xmpp/xmpp_parser.hpp>
+#include <xmpp/xmpp_stanza.hpp>
+
+#include <logger/logger.hpp>
+
+/**
+ * Expat handlers. Called by the Expat library, never by ourself.
+ * They just forward the call to the XmppParser corresponding methods.
+ */
+
+static void start_element_handler(void* user_data, const XML_Char* name, const XML_Char** atts)
+{
+  static_cast<XmppParser*>(user_data)->start_element(name, atts);
+}
+
+static void end_element_handler(void* user_data, const XML_Char* name)
+{
+  static_cast<XmppParser*>(user_data)->end_element(name);
+}
+
+static void character_data_handler(void *user_data, const XML_Char *s, int len)
+{
+  static_cast<XmppParser*>(user_data)->char_data(s, len);
+}
+
+/**
+ * XmppParser class
+ */
+
+XmppParser::XmppParser():
+  level(0),
+  current_node(nullptr)
+{
+  this->init_xml_parser();
+}
+
+void XmppParser::init_xml_parser()
+{
+  // Create the expat parser
+  this->parser = XML_ParserCreateNS("UTF-8", ':');
+  XML_SetUserData(this->parser, static_cast<void*>(this));
+
+  // Install Expat handlers
+  XML_SetElementHandler(this->parser, &start_element_handler, &end_element_handler);
+  XML_SetCharacterDataHandler(this->parser, &character_data_handler);
+}
+
+XmppParser::~XmppParser()
+{
+  if (this->current_node)
+    delete this->current_node;
+  XML_ParserFree(this->parser);
+}
+
+int XmppParser::feed(const char* data, const int len, const bool is_final)
+{
+  int res = XML_Parse(this->parser, data, len, is_final);
+  if (res == XML_STATUS_ERROR &&
+      (XML_GetErrorCode(this->parser) != XML_ERROR_FINISHED))
+    log_error("Xml_Parse encountered an error: " <<
+              XML_ErrorString(XML_GetErrorCode(this->parser)))
+  return res;
+}
+
+int XmppParser::parse(const int len, const bool is_final)
+{
+  int res = XML_ParseBuffer(this->parser, len, is_final);
+  if (res == XML_STATUS_ERROR)
+    log_error("Xml_Parsebuffer encountered an error: " <<
+              XML_ErrorString(XML_GetErrorCode(this->parser)));
+  return res;
+}
+
+void XmppParser::reset()
+{
+  XML_ParserFree(this->parser);
+  this->init_xml_parser();
+  if (this->current_node)
+    delete this->current_node;
+  this->current_node = nullptr;
+  this->level = 0;
+}
+
+void* XmppParser::get_buffer(const size_t size) const
+{
+  return XML_GetBuffer(this->parser, static_cast<int>(size));
+}
+
+void XmppParser::start_element(const XML_Char* name, const XML_Char** attribute)
+{
+  level++;
+
+  XmlNode* new_node = new XmlNode(name, this->current_node);
+  if (this->current_node)
+    this->current_node->add_child(new_node);
+  this->current_node = new_node;
+  for (size_t i = 0; attribute[i]; i += 2)
+    this->current_node->set_attribute(attribute[i], attribute[i+1]);
+  if (this->level == 1)
+    this->stream_open_event(*this->current_node);
+}
+
+void XmppParser::end_element(const XML_Char* name)
+{
+  (void)name;
+  level--;
+  this->current_node->close();
+  if (level == 1)
+    {
+      this->stanza_event(*this->current_node);
+    }
+  if (level == 0)
+    {
+      this->stream_close_event(*this->current_node);
+      delete this->current_node;
+      this->current_node = nullptr;
+    }
+  else
+    this->current_node = this->current_node->get_parent();
+  if (level == 1)
+    this->current_node->delete_all_children();
+}
+
+void XmppParser::char_data(const XML_Char* data, int len)
+{
+  if (this->current_node->has_children())
+    this->current_node->get_last_child()->add_to_tail(std::string(data, len));
+  else
+    this->current_node->add_to_inner(std::string(data, len));
+}
+
+void XmppParser::stanza_event(const Stanza& stanza) const
+{
+  for (const auto& callback: this->stanza_callbacks)
+    {
+      try {
+        callback(stanza);
+      } catch (const std::exception& e) {
+        log_debug("Unhandled exception: " << e.what());
+      }
+    }
+}
+
+void XmppParser::stream_open_event(const XmlNode& node) const
+{
+  for (const auto& callback: this->stream_open_callbacks)
+    callback(node);
+}
+
+void XmppParser::stream_close_event(const XmlNode& node) const
+{
+  for (const auto& callback: this->stream_close_callbacks)
+    callback(node);
+}
+
+void XmppParser::add_stanza_callback(std::function<void(const Stanza&)>&& callback)
+{
+  this->stanza_callbacks.emplace_back(std::move(callback));
+}
+
+void XmppParser::add_stream_open_callback(std::function<void(const XmlNode&)>&& callback)
+{
+  this->stream_open_callbacks.emplace_back(std::move(callback));
+}
+
+void XmppParser::add_stream_close_callback(std::function<void(const XmlNode&)>&& callback)
+{
+  this->stream_close_callbacks.emplace_back(std::move(callback));
+}
diff --git a/louloulibs/xmpp/xmpp_parser.hpp b/louloulibs/xmpp/xmpp_parser.hpp
new file mode 100644
index 0000000..79c9f8f
--- /dev/null
+++ b/louloulibs/xmpp/xmpp_parser.hpp
@@ -0,0 +1,126 @@
+#ifndef XMPP_PARSER_INCLUDED
+# define XMPP_PARSER_INCLUDED
+
+#include <xmpp/xmpp_stanza.hpp>
+
+#include <functional>
+
+#include <expat.h>
+
+/**
+ * A SAX XML parser that builds XML nodes and spawns events when a complete
+ * stanza is received (an element of level 2), or when the document is
+ * opened/closed (an element of level 1)
+ *
+ * After a stanza_event has been spawned, we delete the whole stanza. This
+ * means that even with a very long document (in XMPP the document is
+ * potentially infinite), the memory is never exhausted as long as each
+ * stanza is reasonnably short.
+ *
+ * The element names generated by expat contain the namespace of the
+ * element, a colon (':') and then the actual name of the element.  To get
+ * an element "x" with a namespace of "http://jabber.org/protocol/muc", you
+ * just look for an XmlNode named "http://jabber.org/protocol/muc:x"
+ *
+ * TODO: enforce the size-limit for the stanza (limit the number of childs
+ * it can contain). For example forbid the parser going further than level
+ * 20 (arbitrary number here), and each XML node to have more than 15 childs
+ * (arbitrary number again).
+ */
+class XmppParser
+{
+public:
+  explicit XmppParser();
+  ~XmppParser();
+
+public:
+  /**
+   * Init the XML parser and install the callbacks
+   */
+  void init_xml_parser();
+  /**
+   * Feed the parser with some XML data
+   */
+  int feed(const char* data, const int len, const bool is_final);
+  /**
+   * Parse the data placed in the parser buffer
+   */
+  int parse(const int size, const bool is_final);
+  /**
+   * Reset the parser, so it can be used from scratch afterward
+   */
+  void reset();
+  /**
+   * Get a buffer provided by the xml parser.
+   */
+  void* get_buffer(const size_t size) const;
+  /**
+   * Add one callback for the various events that this parser can spawn.
+   */
+  void add_stanza_callback(std::function<void(const Stanza&)>&& callback);
+  void add_stream_open_callback(std::function<void(const XmlNode&)>&& callback);
+  void add_stream_close_callback(std::function<void(const XmlNode&)>&& callback);
+
+  /**
+   * Called when a new XML element has been opened. We instanciate a new
+   * XmlNode and set it as our current node. The parent of this new node is
+   * the previous "current" node. We have all the element's attributes in
+   * this event.
+   *
+   * We spawn a stream_event with this node if this is a level-1 element.
+   */
+  void start_element(const XML_Char* name, const XML_Char** attribute);
+  /**
+   * Called when an XML element has been closed. We close the current_node,
+   * set our current_node as the parent of the current_node, and if that was
+   * a level-2 element we spawn a stanza_event with this node.
+   *
+   * And we then delete the stanza (and everything under it, its children,
+   * attribute, etc).
+   */
+  void end_element(const XML_Char* name);
+  /**
+   * Some inner or tail data has been parsed
+   */
+  void char_data(const XML_Char* data, int len);
+  /**
+   * Calls all the stanza_callbacks one by one.
+   */
+  void stanza_event(const Stanza& stanza) const;
+  /**
+   * Calls all the stream_open_callbacks one by one. Note: the passed node is not
+   * closed yet.
+   */
+  void stream_open_event(const XmlNode& node) const;
+  /**
+   * Calls all the stream_close_callbacks one by one.
+   */
+  void stream_close_event(const XmlNode& node) const;
+
+private:
+  /**
+   * Expat structure.
+   */
+  XML_Parser parser;
+  /**
+   * The current depth in the XML document
+   */
+  size_t level;
+  /**
+   * The deepest XML node opened but not yet closed (to which we are adding
+   * new children, inner or tail)
+   */
+  XmlNode* current_node;
+  /**
+   * A list of callbacks to be called on an *_event, receiving the
+   * concerned Stanza/XmlNode.
+   */
+  std::vector<std::function<void(const Stanza&)>> stanza_callbacks;
+  std::vector<std::function<void(const XmlNode&)>> stream_open_callbacks;
+  std::vector<std::function<void(const XmlNode&)>> stream_close_callbacks;
+
+  XmppParser(const XmppParser&) = delete;
+  XmppParser& operator=(const XmppParser&) = delete;
+};
+
+#endif // XMPP_PARSER_INCLUDED
diff --git a/louloulibs/xmpp/xmpp_stanza.cpp b/louloulibs/xmpp/xmpp_stanza.cpp
new file mode 100644
index 0000000..01d1d2e
--- /dev/null
+++ b/louloulibs/xmpp/xmpp_stanza.cpp
@@ -0,0 +1,274 @@
+#include <xmpp/xmpp_stanza.hpp>
+
+#include <utils/encoding.hpp>
+#include <utils/split.hpp>
+
+#include <stdexcept>
+#include <iostream>
+
+#include <string.h>
+
+std::string xml_escape(const std::string& data)
+{
+  std::string res;
+  res.reserve(data.size());
+  for (size_t pos = 0; pos != data.size(); ++pos)
+    {
+      switch(data[pos])
+        {
+        case '&':
+          res += "&amp;";
+          break;
+        case '<':
+          res += "&lt;";
+          break;
+        case '>':
+          res += "&gt;";
+          break;
+        case '\"':
+          res += "&quot;";
+          break;
+        case '\'':
+          res += "&apos;";
+          break;
+        default:
+          res += data[pos];
+          break;
+        }
+    }
+  return res;
+}
+
+std::string xml_unescape(const std::string& data)
+{
+  std::string res;
+  res.reserve(data.size());
+  const char* str = data.c_str();
+  while (str && *str && static_cast<size_t>(str - data.c_str()) < data.size())
+    {
+      if (*str == '&')
+        {
+          if (strncmp(str+1, "amp;", 4) == 0)
+            {
+              res += "&";
+              str += 4;
+            }
+          else if (strncmp(str+1, "lt;", 3) == 0)
+            {
+              res += "<";
+              str += 3;
+            }
+          else if (strncmp(str+1, "gt;", 3) == 0)
+            {
+              res += ">";
+              str += 3;
+            }
+          else if (strncmp(str+1, "quot;", 5) == 0)
+            {
+              res += "\"";
+              str += 5;
+            }
+          else if (strncmp(str+1, "apos;", 5) == 0)
+            {
+              res += "'";
+              str += 5;
+            }
+          else
+            res += "&";
+        }
+      else
+        res += *str;
+      str++;
+    }
+  return res;
+}
+
+XmlNode::XmlNode(const std::string& name, XmlNode* parent):
+  parent(parent),
+  closed(false)
+{
+  // split the namespace and the name
+  auto n = name.rfind(":");
+  if (n == std::string::npos)
+    this->name = name;
+  else
+    {
+      this->name = name.substr(n+1);
+      this->attributes["xmlns"] = name.substr(0, n);
+    }
+}
+
+XmlNode::XmlNode(const std::string& name):
+  XmlNode(name, nullptr)
+{
+}
+
+XmlNode::~XmlNode()
+{
+  this->delete_all_children();
+}
+
+void XmlNode::delete_all_children()
+{
+  for (auto& child: this->children)
+    {
+      delete child;
+    }
+  this->children.clear();
+}
+
+void XmlNode::set_attribute(const std::string& name, const std::string& value)
+{
+  this->attributes[name] = value;
+}
+
+void XmlNode::set_tail(const std::string& data)
+{
+  this->tail = data;
+}
+
+void XmlNode::add_to_tail(const std::string& data)
+{
+  this->tail += data;
+}
+
+void XmlNode::set_inner(const std::string& data)
+{
+  this->inner = data;
+}
+
+void XmlNode::add_to_inner(const std::string& data)
+{
+  this->inner += data;
+}
+
+std::string XmlNode::get_inner() const
+{
+  return this->inner;
+}
+
+std::string XmlNode::get_tail() const
+{
+  return this->tail;
+}
+
+XmlNode* XmlNode::get_child(const std::string& name, const std::string& xmlns) const
+{
+  for (auto& child: this->children)
+    {
+      if (child->name == name && child->get_tag("xmlns") == xmlns)
+        return child;
+    }
+  return nullptr;
+}
+
+std::vector<XmlNode*> XmlNode::get_children(const std::string& name, const std::string& xmlns) const
+{
+  std::vector<XmlNode*> res;
+  for (auto& child: this->children)
+    {
+      if (child->name == name && child->get_tag("xmlns") == xmlns)
+        res.push_back(child);
+    }
+  return res;
+}
+
+XmlNode* XmlNode::add_child(XmlNode* child)
+{
+  child->parent = this;
+  this->children.push_back(child);
+  return child;
+}
+
+XmlNode* XmlNode::add_child(XmlNode&& child)
+{
+  XmlNode* new_node = new XmlNode(std::move(child));
+  return this->add_child(new_node);
+}
+
+XmlNode* XmlNode::get_last_child() const
+{
+  return this->children.back();
+}
+
+void XmlNode::close()
+{
+  if (this->closed)
+    throw std::runtime_error("Closing an already closed XmlNode");
+  this->closed = true;
+}
+
+XmlNode* XmlNode::get_parent() const
+{
+  return this->parent;
+}
+
+void XmlNode::set_name(const std::string& name)
+{
+  this->name = name;
+}
+
+const std::string XmlNode::get_name() const
+{
+  return this->name;
+}
+
+std::string XmlNode::to_string() const
+{
+  std::string res("<");
+  res += this->name;
+  for (const auto& it: this->attributes)
+    res += " " + it.first + "='" + sanitize(it.second) + "'";
+  if (this->closed && !this->has_children() && this->inner.empty())
+    res += "/>";
+  else
+    {
+      res += ">" + sanitize(this->inner);
+      for (const auto& child: this->children)
+        res += child->to_string();
+      if (this->closed)
+        {
+          res += "</" + this->get_name() + ">";
+        }
+    }
+  res += sanitize(this->tail);
+  return res;
+}
+
+bool XmlNode::has_children() const
+{
+  return !this->children.empty();
+}
+
+const std::string XmlNode::get_tag(const std::string& name) const
+{
+  try
+    {
+      const auto& value = this->attributes.at(name);
+      return value;
+    }
+  catch (const std::out_of_range& e)
+    {
+      return "";
+    }
+}
+
+bool XmlNode::del_tag(const std::string& name)
+{
+  if (this->attributes.erase(name) != 0)
+    return true;
+  return false;
+}
+
+std::string& XmlNode::operator[](const std::string& name)
+{
+  return this->attributes[name];
+}
+
+std::string sanitize(const std::string& data)
+{
+  if (utils::is_valid_utf8(data.data()))
+    return xml_escape(utils::remove_invalid_xml_chars(data));
+  else
+    return xml_escape(utils::remove_invalid_xml_chars(utils::convert_to_utf8(data, "ISO-8859-1")));
+}
diff --git a/louloulibs/xmpp/xmpp_stanza.hpp b/louloulibs/xmpp/xmpp_stanza.hpp
new file mode 100644
index 0000000..f1a6a0f
--- /dev/null
+++ b/louloulibs/xmpp/xmpp_stanza.hpp
@@ -0,0 +1,160 @@
+#ifndef XMPP_STANZA_INCLUDED
+# define XMPP_STANZA_INCLUDED
+
+#include <unordered_map>
+#include <string>
+#include <vector>
+
+std::string xml_escape(const std::string& data);
+std::string xml_unescape(const std::string& data);
+std::string sanitize(const std::string& data);
+
+/**
+ * Represent an XML node. It has
+ * - A parent XML node (in the case of the first-level nodes, the parent is
+     nullptr)
+ * - zero, one or more children XML nodes
+ * - A name
+ * - A map of attributes
+ * - inner data (text inside the node)
+ * - tail data (text just after the node)
+ */
+class XmlNode
+{
+public:
+  explicit XmlNode(const std::string& name, XmlNode* parent);
+  explicit XmlNode(const std::string& name);
+  XmlNode(XmlNode&& node):
+    name(std::move(node.name)),
+    parent(node.parent),
+    closed(node.closed),
+    attributes(std::move(node.attributes)),
+    children(std::move(node.children)),
+    inner(std::move(node.inner)),
+    tail(std::move(node.tail))
+  {
+    node.parent = nullptr;
+  }
+  /**
+   * The copy constructor do not copy the parent attribute. The children
+   * nodes are all copied recursively.
+   */
+  XmlNode(const XmlNode& node):
+    name(node.name),
+    parent(nullptr),
+    closed(node.closed),
+    attributes(node.attributes),
+    children{},
+    inner(node.inner),
+    tail(node.tail)
+  {
+    for (XmlNode* child: node.children)
+      {
+        XmlNode* child_copy = new XmlNode(*child);
+        this->add_child(child_copy);
+      }
+  }
+
+  ~XmlNode();
+
+  void delete_all_children();
+  void set_attribute(const std::string& name, const std::string& value);
+  /**
+   * Set the content of the tail, that is the text just after this node
+   */
+  void set_tail(const std::string& data);
+  /**
+   * Append the given data to the content of the tail. This exists because
+   * the expat library may provide the complete text of an element in more
+   * than one call
+   */
+  void add_to_tail(const std::string& data);
+  /**
+   * Set the content of the inner, that is the text inside this node.
+   */
+  void set_inner(const std::string& data);
+  /**
+   * Append the given data to the content of the inner. For the reason
+   * described in add_to_tail comment.
+   */
+  void add_to_inner(const std::string& data);
+  /**
+   * Get the content of inner
+   */
+  std::string get_inner() const;
+  /**
+   * Get the content of the tail
+   */
+  std::string get_tail() const;
+  /**
+   * Get a pointer to the first child element with that name and that xml namespace
+   */
+  XmlNode* get_child(const std::string& name, const std::string& xmlns) const;
+  /**
+   * Get a vector of all the children that have that name and that xml namespace.
+   */
+  std::vector<XmlNode*> get_children(const std::string& name, const std::string& xmlns) const;
+  /**
+   * Add a node child to this node. Assign this node to the child’s parent.
+   * Returns a pointer to the newly added child.
+   */
+  XmlNode* add_child(XmlNode* child);
+  XmlNode* add_child(XmlNode&& child);
+  /**
+   * Returns the last of the children. If the node doesn't have any child,
+   * the behaviour is undefined. The user should make sure this is the case
+   * by calling has_children() for example.
+   */
+  XmlNode* get_last_child() const;
+  /**
+   * Mark this node as closed, nothing else
+   */
+  void close();
+  XmlNode* get_parent() const;
+  void set_name(const std::string& name);
+  const std::string get_name() const;
+  /**
+   * Serialize the stanza into a string
+   */
+  std::string to_string() const;
+  /**
+   * Whether or not this node has at least one child (if not, this is a leaf
+   * node)
+   */
+  bool has_children() const;
+  /**
+   * Gets the value for the given attribute, returns an empty string if the
+   * node as no such attribute.
+   */
+  const std::string get_tag(const std::string& name) const;
+  /**
+   * Remove the attribute of the node. Does nothing if that attribute is not
+   * present. Returns true if the tag was removed, false if it was absent.
+   */
+  bool del_tag(const std::string& name);
+  /**
+   * Use this to set an attribute's value, like node["id"] = "12";
+   */
+  std::string& operator[](const std::string& name);
+
+private:
+  std::string name;
+  XmlNode* parent;
+  bool closed;
+  std::unordered_map<std::string, std::string> attributes;
+  std::vector<XmlNode*> children;
+  std::string inner;
+  std::string tail;
+
+  XmlNode& operator=(const XmlNode&) = delete;
+  XmlNode& operator=(XmlNode&&) = delete;
+};
+
+/**
+ * An XMPP stanza is just an XML node of level 2 in the XMPP document (the
+ * level 1 ones are the <stream::stream/>, and the ones above 2 are just the
+ * content of the stanzas)
+ */
+typedef XmlNode Stanza;
+
+#endif // XMPP_STANZA_INCLUDED