Some fixes:

* using ContentTypes to resolve static files too
* added some default content types, in the case of mime.types file not present
* resolve extensions with upper case letters in them

libresapi/src/api/ApiServerMHD.cpp

@@ -308,7 +308,7 @@ public:
 		unsigned int i = info.fname.rfind('.');
 		if(i != std::string::npos)
 			ext = info.fname.substr(i+1);
-		MHD_add_response_header(resp, "Content-Type", ContentTypes::ContentTypes::cTypeFromExt(ext).c_str());
+		MHD_add_response_header(resp, "Content-Type", ContentTypes::cTypeFromExt(ext).c_str());
 
         secure_queue_response(connection, MHD_HTTP_OK, resp);
         MHD_destroy_response(resp);
@@ -650,27 +650,10 @@ int ApiServerMHD::accessHandlerCallback(MHD_Connection *connection,
         {
             extension = filename[i] + extension;
             i--;
-        }
-        const char* type = 0;
-        if(extension == "html")
-            type = "text/html";
-        else if(extension == "css")
-            type = "text/css";
-        else if(extension == "js")
-            type = "text/javascript";
-        else if(extension == "jsx") // react.js jsx files
-            type = "text/jsx";
-        else if(extension == "png")
-            type = "image/png";
-        else if(extension == "jpg" || extension == "jpeg")
-            type = "image/jpeg";
-        else if(extension == "gif")
-            type = "image/gif";
-        else
-            type = "application/octet-stream";
+        };
 
         struct MHD_Response* resp = MHD_create_response_from_fd(s.st_size, fd);
-        MHD_add_response_header(resp, "Content-Type", type);
+		MHD_add_response_header(resp, "Content-Type", ContentTypes::cTypeFromExt(extension).c_str());
         secure_queue_response(connection, MHD_HTTP_OK, resp);
         MHD_destroy_response(resp);
         return MHD_YES;

libresapi/src/util/ContentTypes.cpp

@@ -1,8 +1,11 @@
 #include "ContentTypes.h"
 #include <fstream>
+#include <cctype>
+#include <algorithm>
 
 RsMutex ContentTypes::ctmtx = RsMutex("CTMTX");
 std::map<std::string, std::string> ContentTypes::cache;
+bool ContentTypes::inited = false;
 
 #ifdef WINDOWS_SYS
 	//Next to the executable
@@ -18,12 +21,18 @@ std::string ContentTypes::cTypeFromExt(const std::string &extension)
 
 	RsStackMutex mtx(ctmtx);
 
+	if(!inited)
+		addBasic();
+
+	std::string extension2(extension); //lower case
+	std::transform(extension2.begin(), extension2.end(), extension2.begin(),::tolower);
+
 	//looking into the cache
 	std::map<std::string,std::string>::iterator it;
-	it = cache.find(extension);
+	it = cache.find(extension2);
 	if (it != cache.end())
 	{
-		std::cout << "Mime " + it->second + " for extension ." + extension + " was found in cache" << std::endl;
+		std::cout << "Mime " + it->second + " for extension ." + extension2 + " was found in cache" << std::endl;
 		return it->second;
 	}
 
@@ -45,19 +54,35 @@ std::string ContentTypes::cTypeFromExt(const std::string &extension)
 			else
 				ext = line.substr(j+1, i-j-1);
 
-			if(extension == ext)
+			if(extension2 == ext)
 			{
 				std::string mime = line.substr(0, line.find_first_of("\t "));
-				cache[extension] = mime;
-				std::cout << "Mime " + mime + " for extension ." + extension + " was found in mime.types" << std::endl;
+				cache[extension2] = mime;
+				std::cout << "Mime " + mime + " for extension ." + extension2 + " was found in mime.types" << std::endl;
 				return mime;
 			}
 		}
 	}
 
 	//nothing found
-	std::cout << "Mime for " + extension + " was not found in " + filename + " falling back to " << DEFAULTCT << std::endl;
-	cache[extension] = DEFAULTCT;
+	std::cout << "Mime for " + extension2 + " was not found in " + filename + " falling back to " << DEFAULTCT << std::endl;
+	cache[extension2] = DEFAULTCT;
 	return DEFAULTCT;
 }
 
+//Add some basic content-types before first use.
+//It keeps webui usable in the case of mime.types file not exists.
+void ContentTypes::addBasic()
+{
+	inited = true;
+
+	cache["html"] = "text/html";
+	cache["css"] = "text/css";
+	cache["js"] = "text/javascript";
+	cache["jsx"] = "text/jsx";
+	cache["png"] = "image/png";
+	cache["jpg"] = "image/jpeg";
+	cache["jpeg"] = "image/jpeg";
+	cache["gif"] = "image/gif";
+}
+

libresapi/src/util/ContentTypes.h

@@ -16,6 +16,8 @@ private:
 	static std::map<std::string, std::string> cache;
 	static RsMutex ctmtx;
 	static const char* filename;
+	static bool inited;
+	static void addBasic();
 };
 
 #endif // CONTENTTYPES_H