Added a "Check for updates" option to the Help menu.

src/Util.cpp

@@ -1,6 +1,15 @@
 #include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
+#include <string>
+
+#ifndef _WIN32
+#include <unistd.h>
+#include <sys/stat.h>
+#else // _WIN32
+#include <io.h>
+#include <direct.h>
+#endif // _WIN32
+
 #include <zlib.h>
 
 #ifndef NO_PNG
@@ -44,6 +53,16 @@ static int (ZEXPORT *utilGzReadFunc)(gzFile, voidp, unsigned int) = NULL;
 static int (ZEXPORT *utilGzCloseFunc)(gzFile) = NULL;
 static z_off_t (ZEXPORT *utilGzSeekFunc)(gzFile, z_off_t, int) = NULL;
 
+bool FileExists(const char *filename)
+{
+#ifdef _WIN32
+	return (_access(filename, 0) != -1);
+#else
+	struct stat buffer;
+	return (stat(filename, &buffer) == 0);
+#endif
+}
+
 void utilReadScreenPixels(u8* dest, int w, int h)
 {
 	u8* b = dest;
@@ -615,6 +634,67 @@ u8 *utilLoad(const char *file,
 	return image;
 }
 
+void replaceAll(std::string& str, const std::string& from, const std::string& to) {
+	if (from.empty())
+		return;
+	size_t start_pos = 0;
+	while ((start_pos = str.find(from, start_pos)) != std::string::npos) {
+		str.replace(start_pos, from.length(), to);
+		start_pos += to.length(); // In case 'to' contains 'from', like replacing 'x' with 'yx'
+	}
+}
+
+void utilExtract(const char* filepath, const char* filename)
+{
+	fex_t* fex;
+	std::string archive_name(filepath);
+	archive_name.append(filename);
+
+	fex_open(&fex, archive_name.c_str());
+	while (!fex_done(fex))
+	{
+		std::string extracted_filename(filepath);
+		extracted_filename.append(fex_name(fex));
+#ifdef WIN32
+		replaceAll(extracted_filename, "/", "\\");
+#endif
+
+		std::string new_dir(filepath);
+		new_dir.append(fex_name(fex));
+#ifdef WIN32
+		replaceAll(new_dir, "/", "\\");
+#endif
+		new_dir = new_dir.substr(0, new_dir.find_last_of("\\"));
+		if (!FileExists(new_dir.c_str()))
+			mkdir(new_dir.c_str()
+#ifndef WIN32
+			,0777
+#endif
+			);
+
+		if (FileExists(extracted_filename.c_str()))
+		{
+			std::string new_name(filepath);
+			new_name.append("old-");
+			new_name.append(fex_name(fex));
+#ifdef WIN32
+			replaceAll(new_name, "/", "\\");
+#endif
+			remove(new_name.c_str());
+			rename(extracted_filename.c_str(), new_name.c_str());
+		}
+
+		FILE *extracted_file = fopen(extracted_filename.c_str(), "wb");
+		const void* p;
+		fex_data(fex, &p);
+		fwrite(p, fex_size(fex), 1, extracted_file);
+		fclose(extracted_file);
+		fex_next(fex);
+	}
+	fex_close(fex);
+
+}
+
 void utilWriteInt(gzFile gzFile, int i)
 {
   utilGzWrite(gzFile, &i, sizeof(int));

src/Util.h

@@ -14,6 +14,9 @@ typedef struct {
 	void *address;
 	int size;
 } variable_desc;
+
+bool FileExists(const char *filename);
+
 void utilReadScreenPixels(u8* dest, int w, int h);
 bool utilWritePNGFile(const char *, int, int, u8 *);
 bool utilWriteBMPFile(const char *, int, int, u8 *);
@@ -25,6 +28,7 @@ bool utilIsZipFile(const char *);
 void utilStripDoubleExtension(const char *, char *);
 IMAGE_TYPE utilFindType(const char *);
 uint8_t *utilLoad(const char *, bool (*)(const char*), uint8_t *, int &);
+void utilExtract(const char* filepath, const char* filename);
 
 void utilPutDword(uint8_t *, uint32_t);
 void utilPutWord(uint8_t *, uint16_t);

src/common/ConfigManager.cpp

@@ -30,10 +30,8 @@ extern "C" {
 #include "../Util.h"
 
 #ifndef _WIN32
-#include <unistd.h>
 #define GETCWD getcwd
 #else // _WIN32
-#include <io.h>
 #include <direct.h>
 #define GETCWD _getcwd
 #define snprintf sprintf
@@ -615,16 +613,6 @@ void CloseConfig()
 		iniparser_freedict(preferences);
 }
 
-bool FileExists(const char *filename)
-{
-#ifdef _WIN32
-	return (_access(filename, 0) != -1);
-#else
-	struct stat buffer;
-	return (stat(filename, &buffer) == 0);
-#endif
-}
-
 char* FindConfigFile(char *name)
 {
 	char buffer[4096];

src/wx/cmdevents.cpp

@@ -12,6 +12,7 @@
 #include <wx/regex.h>
 #include <wx/numdlg.h>
 #include <wx/progdlg.h>
+#include <wx/url.h>
 
 #ifndef NO_FFMPEG
 extern "C" {
@@ -2498,6 +2499,30 @@ EVT_HANDLER(UpdateRDB, "Update ROM database")
 	}
 }
 
+EVT_HANDLER(UpdateEmu, "Check for updates")
+{
+#ifndef __WXMSW__
+	int ret = wxMessageBox(_("Online updates are available on Windows only. Please browse this site for updates.\n\nhttps://sourceforge.net/projects/vbam/files/latest/download"),
+	                       _("Online Update"), wxOK | wxICON_INFORMATION);
+	return;
+#endif
+	wxString update_url = CheckForUpdates(_T("sourceforge.net"), _T("/projects/vbam/files/latest/download"));
+
+	if (!update_url.IsEmpty())
+	{
+		int ret = wxMessageBox(_("A new update is available. To update, VisualBoyAdvance-M must be Run as administrator. Would you like to download and update VisualBoyAdvance-M?\n\nhttps://sourceforge.net/projects/vbam/files/latest/download"),
+		                       _("New Update Available"), wxYES_NO | wxICON_QUESTION);
+
+		if (ret == wxYES)
+		{
+			wxURL url(update_url);
+			UpdateFile(url.GetServer(), url.GetPath());
+			ret = wxMessageBox(_("The update has been downloaded and installed.  Please restart VisualBoyAdvance-M."),
+			                   _("Update Downloaded"), wxOK | wxICON_INFORMATION);
+		}
+	}
+}
+
 // was About
 EVT_HANDLER(wxID_ABOUT, "About...")
 {
@@ -2505,6 +2530,7 @@ EVT_HANDLER(wxID_ABOUT, "About...")
 	ai.SetName(wxT("VisualBoyAdvance-M"));
 	wxString version = wxT("");
 #ifndef FINAL_BUILD
+
 	if (!version.IsEmpty())
 		version = version + wxT("-");
 

src/wx/wxvbam.cpp

@@ -17,6 +17,8 @@
 #include <wx/regex.h>
 #include <wx/protocol/http.h>
 #include <wx/zipstrm.h>
+#include <wx/progdlg.h>
+#include <wx/url.h>
 
 // The built-in xrc file
 #include "builtin-xrc.h"
@@ -36,7 +38,7 @@ static void get_config_path(wxPathList &path, bool exists = true)
 	wxStandardPathsBase &stdp = wxStandardPaths::Get();
 #define add_path(p) do { \
     const wxString& s = stdp.p; \
-    if(!exists || wxDirExists(s)) \
+    if((!exists || wxDirExists(s)) && wxIsWritable(s)) \
     path.Add(s); \
 } while(0)
 	// NOTE: this does not support XDG (freedesktop.org) paths
@@ -661,6 +663,110 @@ void MainFrame::DownloadFile(wxString host, wxString url)
 	get.Close();
 }
 
+void MainFrame::UpdateFile(wxString host, wxString url)
+{
+	wxProgressDialog progress(_T("Downloading..."), _T("Please wait while the VisualBoyAdvance-M update is downloading."));
+	wxHTTP get;
+	get.SetHeader(_T("Content-type"), _T("text/html; charset=utf-8"));
+	get.SetTimeout(10);
+
+	while (!get.Connect(host))
+		wxSleep(5);
+
+	wxInputStream* httpStream = get.GetInputStream(url);
+
+	if (get.GetError() == wxPROTO_NOERR)
+	{
+		if (httpStream != NULL)
+		{
+			size_t size = httpStream->GetSize();
+			char* data = new char[size];
+			wxFileName name(wxStandardPaths::Get().GetPluginsDir(), url.AfterLast('/'), wxEmptyString);
+
+			if (httpStream)
+			{
+				size_t chunks = 100;
+				size_t chunkSize = httpStream->GetSize() / chunks;
+				char* fileContent = new char[chunkSize];
+#if (wxMAJOR_VERSION >= 3)
+				progress.SetRange(chunks);
+#endif
+				wxFFile file(name.GetFullPath(), _T("wb"));
+
+				for (size_t i = 0; i <= chunks; i++)
+				{
+					progress.Update(i);
+					httpStream->Read(fileContent, chunkSize);
+					file.Write(fileContent, httpStream->LastRead());
+				}
+
+				file.Flush();
+				wxDELETE(fileContent);
+			}
+
+			if (name.FileExists() && name.GetFullName().Lower().Contains(wxT(".7z")))
+			{
+				utilExtract(name.GetPathWithSep().mb_str(wxConvUTF8), name.GetFullName().mb_str(wxConvUTF8));
+			}
+
+			delete[] data;
+			delete httpStream;
+		}
+	}
+
+	get.Close();
+}
+
+wxString MainFrame::CheckForUpdates(wxString host, wxString url)
+{
+	wxString update_url = wxT("");
+	wxHTTP get;
+	get.SetHeader(_T("Content-type"), _T("text/html; charset=utf-8"));
+#ifdef __WXMSW__
+	get.SetHeader(wxT("User-Agent"), wxT("Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0"));
+#endif
+	get.SetTimeout(10);
+
+	while (!get.Connect(host))
+		wxSleep(5);
+
+	wxInputStream* httpStream = get.GetInputStream(url);
+
+	if (get.GetError() == wxPROTO_NOERR)
+	{
+		if (httpStream != NULL)
+		{
+			size_t size = httpStream->GetSize();
+
+			if (httpStream)
+			{
+				wxTextInputStream text(*httpStream, wxT("\x09"), wxConvUTF8);
+
+				while (httpStream->IsOk() && !httpStream->Eof() && update_url.IsEmpty())
+				{
+					wxString line = text.ReadLine();
+
+					if (line.Contains(wxT("direct-download")))
+					{
+						wxURL redirect_url(line.SubString(line.Find(wxT("http://")), line.Find(wxT("\" "))).BeforeLast('\"'));
+						update_url = CheckForUpdates(redirect_url.GetServer(), redirect_url.GetPath() + wxT("?") + redirect_url.GetQuery());
+					}
+
+					if (line.Contains(wxT(" redirected ")))
+					{
+						update_url = line.SubString(line.Find(wxT("http://")), line.Find(wxT(";"))).BeforeLast(';');
+					}
+				}
+			}
+
+			delete httpStream;
+		}
+	}
+
+	get.Close();
+	return update_url;
+}
+
 wxString MainFrame::GetGamePath(wxString path)
 {
 	wxString game_path = path;

src/wx/wxvbam.h

@@ -317,6 +317,8 @@ private:
 	wxDialog* LoadXRCropertySheetDialog(const char* name);
 
 	void DownloadFile(wxString host, wxString url);
+	void UpdateFile(wxString host, wxString url);
+	wxString CheckForUpdates(wxString host, wxString url);
 
 #include "cmdhandlers.h"
 };

src/wx/xrc/MainMenu.xrc

@@ -624,6 +624,9 @@
       <object class="wxMenuItem" name="UpdateRDB">
         <label>Update ROM database</label>
       </object>
+      <object class="wxMenuItem" name="UpdateEmu">
+        <label>Check for updates</label>
+      </object>
       <object class="separator"/>
       <object class="wxMenuItem" name="wxID_ABOUT"/>
     </object>