diff --git a/owlps-positioning/Makefile b/owlps-positioning/Makefile
index d8fa05c..247ea3c 100644
--- a/owlps-positioning/Makefile
+++ b/owlps-positioning/Makefile
@@ -1,4 +1,4 @@
-.PHONY : all obj doc clean purge install uninstall style
+.PHONY : all obj doc clean purge install uninstall style check
 
 DOXYGEN_DIR = doc
 DOXYFILE = Doxyfile
@@ -14,6 +14,7 @@ CP = cp -v
 
 # Autres outils
 STYLE = astyle --style=gnu
+CPPCHECK = cppcheck --enable=all
 DOXYGEN = doxygen
 
 GXX = g++-4.4
@@ -81,3 +82,6 @@ uninstall:
 
 style:
 	@$(STYLE) $(OBJ:.o=.hh) $(OBJ:.o=.cc) inputmedium.hh
+
+check:
+	@$(CPPCHECK) $(OBJ:.o=.hh) $(OBJ:.o=.cc) inputmedium.hh
diff --git a/owlps-positioning/TODO b/owlps-positioning/TODO
index f9d1ab2..e47bf7e 100644
--- a/owlps-positioning/TODO
+++ b/owlps-positioning/TODO
@@ -1,7 +1,5 @@
 
 - InputCSV
-   ° Lancer une exception si l'ouverture du fichier d'entrée échoue.
-   ° Expliquer ce que fait get_next_request().
    ° Différencier une requête normale d'une requête de calibration, en
    utilisant les champs de direction.
    ° Lire la direction en tant qu'entier plutôt que float ?
@@ -32,16 +30,9 @@
    les Waypoint. Si oui, faut-il aussi les enlever des listes dans
    Stock ? (Pour l'instant ils ne sont pas dans Stock.)
 
-- CalibrationMeasurement
-   Vérifier que l'operator<<() est utile (puisqu'il y a celui de
-   Measurement).
-
 - Request
    Constructeur par recopie, operator==(), etc.
 
-- Area
-   operator=()
-
 - AccessPoint
    Attribut float friis_index ?
 
diff --git a/owlps-positioning/area.cc b/owlps-positioning/area.cc
index 72f1a5e..671cca0 100644
--- a/owlps-positioning/area.cc
+++ b/owlps-positioning/area.cc
@@ -12,7 +12,7 @@ Area::Area(const Building *_building, const string &_name,
            const float &_x1, const float &_y1, const float &_z1,
            const float &_x2, const float &_y2, const float &_z2)
 {
-  building = (Building *) _building ;
+  building = const_cast<Building*>(_building) ;
   name = _name ;
 
   float x_min, x_max, y_min, y_max, z_min, z_max ;
@@ -106,6 +106,20 @@ bool Area::contains_point(const Point3D &p) const
 /* *** Operators *** */
 
 
+const Area& Area::operator=(const Area &a)
+{
+  if (this == &a)
+    return *this ;
+
+  building = a.building ;
+  name = a.name ;
+  p_min = a.p_min ;
+  p_max = a.p_max ;
+
+  return *this ;
+}
+
+
 bool Area::operator==(const Area &a) const
 {
   if (this == &a)
diff --git a/owlps-positioning/area.hh b/owlps-positioning/area.hh
index 0b3f281..c3e7bba 100644
--- a/owlps-positioning/area.hh
+++ b/owlps-positioning/area.hh
@@ -69,6 +69,7 @@ public:
 
   /** @name Operators */
   //@{
+  const Area& operator=(const Area &a) ;
   bool operator==(const Area &a) const ;
   bool operator!=(const Area &a) const ;
   //@}
@@ -112,7 +113,7 @@ inline const Point3D& Area::get_p_max() const
 
 inline void Area::set_building(const Building *_building)
 {
-  building = (Building *) _building ;
+  building = const_cast<Building*>(_building) ;
 }
 
 
diff --git a/owlps-positioning/building.hh b/owlps-positioning/building.hh
index b020989..ec782c7 100644
--- a/owlps-positioning/building.hh
+++ b/owlps-positioning/building.hh
@@ -95,7 +95,7 @@ inline void Building::set_name(const std::string &_name)
 inline void Building::add_area(const Area *a)
 {
   if (a != NULL)
-    areas.push_back((Area *) a) ;
+    areas.push_back(const_cast<Area*>(a)) ;
 }
 
 
@@ -106,7 +106,7 @@ inline void Building::add_area(const Area *a)
 inline void Building::add_waypoint(const Waypoint *wp)
 {
   if (wp != NULL)
-    waypoints.push_back((Waypoint *) wp) ;
+    waypoints.push_back(const_cast<Waypoint*>(wp)) ;
 }
 
 
diff --git a/owlps-positioning/calibrationmeasurement.cc b/owlps-positioning/calibrationmeasurement.cc
index af8359c..31a0871 100644
--- a/owlps-positioning/calibrationmeasurement.cc
+++ b/owlps-positioning/calibrationmeasurement.cc
@@ -27,19 +27,3 @@ bool CalibrationMeasurement::operator==(const CalibrationMeasurement &cm)
     this->Measurement::operator==(cm) &&
     reference_point == cm.reference_point ;
 }
-
-
-
-/**
- * Because a ReferencePoint displays its list of CalibrationMeasurement,
- * the ReferencePoint associated with a CalibrationMeasurement is not
- * displayed. Therefore, this is a simple mapping to
- * operator<<(std::ostream&, const Measurement&)
- */
-std::ostream &operator<<(std::ostream &os, const CalibrationMeasurement &cm)
-{
-  os
-      << (Measurement) cm ;
-
-  return os ;
-}
diff --git a/owlps-positioning/calibrationmeasurement.hh b/owlps-positioning/calibrationmeasurement.hh
index 7cbd004..3f7b342 100644
--- a/owlps-positioning/calibrationmeasurement.hh
+++ b/owlps-positioning/calibrationmeasurement.hh
@@ -46,10 +46,6 @@ public:
   bool operator==(const CalibrationMeasurement &cm) ;
   bool operator!=(const CalibrationMeasurement &cm) ;
   //@}
-
-  /// Displays a CalibrationMeasurement
-  friend std::ostream &operator<<(std::ostream &os,
-                                  const CalibrationMeasurement &cm) ;
 } ;
 
 
@@ -70,7 +66,7 @@ inline ReferencePoint* CalibrationMeasurement::get_reference_point(void) const
 inline void CalibrationMeasurement::set_reference_point(
   const ReferencePoint *_rp)
 {
-  reference_point = (ReferencePoint *) _rp ;
+  reference_point = const_cast<ReferencePoint*>(_rp) ;
 }
 
 
diff --git a/owlps-positioning/inputcsv.cc b/owlps-positioning/inputcsv.cc
index 19b4490..b01411e 100644
--- a/owlps-positioning/inputcsv.cc
+++ b/owlps-positioning/inputcsv.cc
@@ -23,7 +23,7 @@ using namespace boost ;
 /**
  * Prepares the InputCSV to read a CSV file.
  * @param filename The name of the file to open.
- * @throw FIXME if the file cannot be opened.
+ * @throw runtime_error if the file cannot be opened.
  */
 InputCSV::InputCSV(const string &filename)
 {
@@ -31,9 +31,8 @@ InputCSV::InputCSV(const string &filename)
 
   input_file.open(input_file_name.c_str()) ;
   if (! input_file)
-    cerr
-        << "InputCSV::InputCSV(): Error opening input file « "
-        << input_file_name << " »!" << endl ;
+    throw runtime_error("Error opening input file « " +
+                        input_file_name + " »!") ;
 }
 
 
@@ -42,12 +41,25 @@ InputCSV::InputCSV(const string &filename)
 
 
 /**
- * FIXME Detailed description comming soon…
+ * This function reads the next Request in the CSV input file. Blank
+ * lines and lines containing only spaces are skipped.
+ *
+ * #input_file should be opened before proceeding requests; otherwise,
+ * #current_request is \link Request::clear() cleared\endlink and a
+ * blank Request is returned. The file must be valid,
+ * semicolon-separated (\em not comma-separated).
+ *
+ * @return The read Request, or a blank Request in case of error (file
+ * not opened, end of file, invalid field or wrong number of fields in
+ * the line).
  */
 const Request& InputCSV::get_next_request()
 {
   if (! input_file)
-    return current_request ;
+    {
+      current_request.clear() ;
+      return current_request ;
+    }
 
   string line ;
 
@@ -82,8 +94,14 @@ const Request& InputCSV::get_next_request()
     }
 
   // If the mobile did not exist, we create it
-  if (Stock::get_mobile(*ti).get_mac_addr().size() == 0)
-    Stock::getw_mobile(*ti).set_mac_addr(*ti) ;
+  try
+    {
+      Stock::get_mobile(*ti) ;
+    }
+  catch (out_of_range e)
+    {
+      Stock::getw_mobile(*ti).set_mac_addr(*ti) ;
+    }
   current_request.set_mobile(&Stock::get_mobile(*ti)) ;
 
   // Read Timestamp field
@@ -168,8 +186,14 @@ const Request& InputCSV::get_next_request()
         }
 
       // If the AP did not exist, we create it
-      if (Stock::get_ap(mac_ap).get_mac_addr().size() == 0)
-        Stock::getw_ap(mac_ap).set_mac_addr(mac_ap) ;
+      try
+        {
+          Stock::get_ap(mac_ap) ;
+        }
+      catch (out_of_range e)
+        {
+          Stock::getw_ap(mac_ap).set_mac_addr(mac_ap) ;
+        }
       measurements[mac_ap].set_ap(&Stock::get_ap(mac_ap)) ;
 
       // Adding value
diff --git a/owlps-positioning/measurement.cc b/owlps-positioning/measurement.cc
index 8131f9d..94b17bd 100644
--- a/owlps-positioning/measurement.cc
+++ b/owlps-positioning/measurement.cc
@@ -11,7 +11,7 @@ using namespace std ;
 Measurement::Measurement(const AccessPoint *_ap,
                          const vector<int> &_ss_list)
 {
-  ap = (AccessPoint *) _ap ;
+  ap = const_cast<AccessPoint*>(_ap) ;
   ss_list = _ss_list ;
   ss_list.reserve(10) ;
   update_average_ss() ;
diff --git a/owlps-positioning/measurement.hh b/owlps-positioning/measurement.hh
index 11ce1e1..427dfa9 100644
--- a/owlps-positioning/measurement.hh
+++ b/owlps-positioning/measurement.hh
@@ -101,7 +101,7 @@ inline float Measurement::get_average_ss() const
 
 inline void Measurement::set_ap(const AccessPoint *_ap)
 {
-  ap = (AccessPoint *) _ap ;
+  ap = const_cast<AccessPoint*>(_ap) ;
 }
 
 
diff --git a/owlps-positioning/referencepoint.hh b/owlps-positioning/referencepoint.hh
index 11547b9..4453089 100644
--- a/owlps-positioning/referencepoint.hh
+++ b/owlps-positioning/referencepoint.hh
@@ -80,7 +80,7 @@ std::vector<CalibrationMeasurement*>& ReferencePoint::get_measurements() const
 inline void ReferencePoint::add_measurement(const CalibrationMeasurement *cm)
 {
   if (cm != NULL)
-    measurements.push_back((CalibrationMeasurement *) cm) ;
+    measurements.push_back(const_cast<CalibrationMeasurement*>(cm)) ;
 }
 
 
diff --git a/owlps-positioning/request.cc b/owlps-positioning/request.cc
index 02e4a85..c70da92 100644
--- a/owlps-positioning/request.cc
+++ b/owlps-positioning/request.cc
@@ -30,7 +30,7 @@ Request::Request(const struct timespec &_timestamp,
 Request::Request(const Mobile *_mobile, const struct timespec &_timestamp,
                  const unordered_map<string, Measurement> &_measurements)
 {
-  mobile = (Mobile*) _mobile ;
+  mobile = const_cast<Mobile*>(_mobile) ;
   timestamp = _timestamp ;
   measurements = _measurements ;
 }
diff --git a/owlps-positioning/request.hh b/owlps-positioning/request.hh
index 96051c1..e5641d7 100644
--- a/owlps-positioning/request.hh
+++ b/owlps-positioning/request.hh
@@ -90,7 +90,7 @@ inline const struct timespec& Request::get_timestamp() const
 
 inline void Request::set_mobile(const Mobile *_mobile)
 {
-  mobile = (Mobile *) _mobile ;
+  mobile = const_cast<Mobile*>(_mobile) ;
 }
 
 
diff --git a/owlps-positioning/waypoint.cc b/owlps-positioning/waypoint.cc
index f38b083..4d776f7 100644
--- a/owlps-positioning/waypoint.cc
+++ b/owlps-positioning/waypoint.cc
@@ -16,7 +16,7 @@ using namespace std ;
 Waypoint::Waypoint(const Building *_b, const Point3D &p): Point3D(p)
 {
   if (_b != NULL)
-    buildings.push_back((Building *) _b) ;
+    buildings.push_back(const_cast<Building*>(_b)) ;
 }
 
 
@@ -32,7 +32,7 @@ Waypoint::Waypoint(const Building *_b,
                   ): Point3D(_x, _y, _z)
 {
   if (_b != NULL)
-    buildings.push_back((Building *) _b) ;
+    buildings.push_back(const_cast<Building*>(_b)) ;
 }
 
 
diff --git a/owlps-positioning/waypoint.hh b/owlps-positioning/waypoint.hh
index 740282c..baf62ff 100644
--- a/owlps-positioning/waypoint.hh
+++ b/owlps-positioning/waypoint.hh
@@ -106,7 +106,7 @@ inline const std::vector<Building*>& Waypoint::get_buildings() const
 inline void Waypoint::add_building(const Building *_b)
 {
   if (_b != NULL)
-    buildings.push_back((Building *) _b) ;
+    buildings.push_back(const_cast<Building*>(_b)) ;
 }