[chargepoint] Handle configurations keys name as case insensitive

Author: c-jimenez

src/chargepoint/ChargePoint.cpp

@@ -990,7 +990,7 @@ void ChargePoint::rcpMessageSent(const std::string& msg)
 void ChargePoint::configurationValueChanged(const std::string& key)
 {
     // Check configuration key
-    if (key == "AuthorizationKey")
+    if (key == "authorizationkey")
     {
         // Reconnect with new authorization key
         if (m_ocpp_config.securityProfile() != 3)
@@ -1001,7 +1001,7 @@ void ChargePoint::configurationValueChanged(const std::string& key)
 
         m_security_manager.logSecurityEvent(SECEVT_RECONFIG_SECURITY_PARAMETER, "AuthorizationKey");
     }
-    else if (key == "SecurityProfile")
+    else if (key == "securityprofile")
     {
         // Reconnect with new profile
         LOG_INFO << "SecurityProfile modified, reconnect with new security profile";

src/chargepoint/config/ConfigManager.cpp

@@ -49,13 +49,15 @@ ConfigManager::~ConfigManager() { }
 /** @copydoc void registerCheckFunction(const std::string&, ConfigurationValueCheckFunc) */
 void ConfigManager::registerCheckFunction(const std::string& key, ConfigurationValueCheckFunc func)
 {
-    m_specific_checks[key] = func;
+    auto lower_case_key               = ocpp::helpers::tolower(key);
+    m_specific_checks[lower_case_key] = func;
 }
 
 /** @copydoc void IConfigManager::registerConfigChangedListener(const std::string&, IConfigChangedListener&) */
 void ConfigManager::registerConfigChangedListener(const std::string& key, IConfigChangedListener& listener)
 {
-    m_listeners[key] = &listener;
+    auto lower_case_key         = ocpp::helpers::tolower(key);
+    m_listeners[lower_case_key] = &listener;
 }
 
 /** @copydoc bool GenericMessageHandler<RequestType, ResponseType>::handleMessage(const RequestType& request,
@@ -93,10 +95,11 @@ bool ConfigManager::handleMessage(const ocpp::messages::ChangeConfigurationReq&
     response.status = ConfigurationStatus::Accepted;
 
     // Specific check
-    auto it = m_specific_checks.find(request.key);
+    auto lower_case_key = ocpp::helpers::tolower(request.key);
+    auto it             = m_specific_checks.find(lower_case_key);
     if (it != m_specific_checks.end())
     {
-        response.status = it->second(request.key, request.value);
+        response.status = it->second(lower_case_key, request.value);
     }
     if (response.status == ConfigurationStatus::Accepted)
     {
@@ -105,10 +108,10 @@ bool ConfigManager::handleMessage(const ocpp::messages::ChangeConfigurationReq&
         if (response.status == ConfigurationStatus::Accepted)
         {
             // Notify change
-            auto iter = m_listeners.find(request.key);
+            auto iter = m_listeners.find(lower_case_key);
             if (iter != m_listeners.end())
             {
-                iter->second->configurationValueChanged(request.key);
+                iter->second->configurationValueChanged(lower_case_key);
             }
         }
     }

src/tools/helpers/StringHelpers.cpp

@@ -18,6 +18,7 @@ along with OpenOCPP. If not, see <http://www.gnu.org/licenses/>.
 
 #include "StringHelpers.h"
 
+#include <algorithm>
 #include <iomanip>
 #include <sstream>
 
@@ -29,6 +30,14 @@ namespace helpers
 /** @brief Space */
 const std::string SPACE_STRING = " ";
 
+/**  @brief Helper function to convert a string to lowercase */
+std::string tolower(const std::string& str)
+{
+    std::string ret = str;
+    std::transform(ret.begin(), ret.end(), ret.begin(), [](unsigned char c) { return std::tolower(c); });
+    return ret;
+}
+
 /** @brief Helper function to trim a string */
 std::string& trim(std::string& str, const std::string& chars)
 {

src/tools/helpers/StringHelpers.h

@@ -31,6 +31,14 @@ namespace helpers
 /** @brief Space */
 extern const std::string SPACE_STRING;
 
+/**
+ *  @brief Helper function to convert a string to lowercase
+ *         /!\ Works only on ASCII strings /!\
+ *  @param str String to convert
+ *  @return Reference to the converted string
+ */
+std::string tolower(const std::string& str);
+
 /**
  *  @brief Helper function to trim a string
  *  @param str String to trim