Fix downloading updates if the user directory is non-ASCII.

Use Unicode APIs everywhere related to filenames, including the
temporary directory.

Fixes #26.

src/download.cpp

@@ -102,10 +102,11 @@ bool GetHttpHeader(HINTERNET handle, DWORD whatToGet, DWORD& output)
            ) == TRUE;
 }
 
-std::string GetURLFileName(const URL_COMPONENTSA& urlc)
+std::wstring GetURLFileName(const URL_COMPONENTSA& urlc)
 {
     const char *lastSlash = strrchr(urlc.lpszUrlPath, '/');
-    return std::string(lastSlash ? lastSlash + 1 : urlc.lpszUrlPath);
+    const std::string fn(lastSlash ? lastSlash + 1 : urlc.lpszUrlPath);
+    return AnsiToWide(fn);
 }
 
 } // anonymous namespace
@@ -201,8 +202,7 @@ void DownloadFile(const std::string& url, IDownloadSink *sink, int flags)
             else
                 *ptr2 = 0;
 
-            std::string filename( c_filename );
-            sink->SetFilename(filename);
+            sink->SetFilename(AnsiToWide(c_filename));
             filename_set = true;
         }
     }

src/download.h

@@ -46,7 +46,7 @@ struct IDownloadSink
     /**
        Inform the sink of detected filename
      */
-    virtual void SetFilename(const std::string& filename) = 0;
+    virtual void SetFilename(const std::wstring& filename) = 0;
 
     /// Add chunk of downloaded data
     virtual void Add(const void *data, size_t len) = 0;
@@ -59,7 +59,7 @@ struct StringDownloadSink : public IDownloadSink
 {
     virtual void SetLength(size_t) {}
 
-    virtual void SetFilename(const std::string& filename) {}
+    virtual void SetFilename(const std::wstring&) {}
 
     virtual void Add(const void *data, size_t len)
     {

src/settings.cpp

@@ -178,7 +178,7 @@ std::string Settings::GetDefaultRegistryPath()
 namespace
 {
 
-void RegistryWrite(const char *name, const char *value)
+void RegistryWrite(const char *name, const wchar_t *value)
 {
     const std::string subkey = Settings::GetRegistryPath();
 
@@ -198,14 +198,14 @@ void RegistryWrite(const char *name, const char *value)
     if ( result != ERROR_SUCCESS )
         throw Win32Exception("Cannot write settings to registry");
 
-    result = RegSetValueExA
+    result = RegSetValueEx
              (
                  key,
-                 name,
+                 AnsiToWide(name).c_str(),
                  0,
                  REG_SZ,
                  (const BYTE*)value,
-                 strlen(value) + 1
+                 (wcslen(value) + 1) * sizeof(wchar_t)
              );
 
     RegCloseKey(key);
@@ -240,7 +240,7 @@ void RegistryDelete(const char *name)
 }
 
 
-int DoRegistryRead(HKEY root, const char *name, char *buf, size_t len)
+int DoRegistryRead(HKEY root, const char *name, wchar_t *buf, size_t len)
 {
     const std::string subkey = Settings::GetRegistryPath();
 
@@ -262,10 +262,10 @@ int DoRegistryRead(HKEY root, const char *name, char *buf, size_t len)
 
     DWORD buflen = len;
     DWORD type;
-    result = RegQueryValueExA
+    result = RegQueryValueEx
              (
                  key,
-                 name,
+                 AnsiToWide(name).c_str(),
                  0,
                  &type,
                  (BYTE*)buf,
@@ -292,7 +292,7 @@ int DoRegistryRead(HKEY root, const char *name, char *buf, size_t len)
 }
 
 
-int RegistryRead(const char *name, char *buf, size_t len)
+int RegistryRead(const char *name, wchar_t *buf, size_t len)
 {
     // Try reading from HKCU first. If that fails, look at HKLM too, in case
     // some settings have globally set values (either by the installer or the
@@ -313,7 +313,7 @@ CriticalSection g_csConfigValues;
 } // anonymous namespace
 
 
-void Settings::DoWriteConfigValue(const char *name, const char *value)
+void Settings::DoWriteConfigValue(const char *name, const wchar_t *value)
 {
     CriticalSectionLocker lock(g_csConfigValues);
 
@@ -321,15 +321,15 @@ void Settings::DoWriteConfigValue(const char *name, const char *value)
 }
 
 
-std::string Settings::DoReadConfigValue(const char *name)
+std::wstring Settings::DoReadConfigValue(const char *name)
 {
     CriticalSectionLocker lock(g_csConfigValues);
 
-    char buf[512];
+    wchar_t buf[512];
     if ( RegistryRead(name, buf, sizeof(buf)) )
         return buf;
     else
-        return std::string();
+        return std::wstring();
 }
 
 void Settings::DeleteConfigValue(const char *name)

src/settings.h

@@ -27,6 +27,7 @@
 #define _settings_h_
 
 #include "threads.h"
+#include "utils.h"
 
 #include <string>
 #include <sstream>
@@ -176,24 +177,49 @@ public:
     template<typename T>
     static void WriteConfigValue(const char *name, const T& value)
     {
-        std::ostringstream s;
+        std::wostringstream s;
         s << value;
         DoWriteConfigValue(name, s.str().c_str());
     }
 
+    static void WriteConfigValue(const char *name, const std::string& value)
+    {
+        DoWriteConfigValue(name, AnsiToWide(value).c_str());
+    }
+
+    static void WriteConfigValue(const char *name, const std::wstring& value)
+    {
+        DoWriteConfigValue(name, value.c_str());
+    }
+
     // Reads a value from registry. Returns true if it was present,
     // false otherwise.
     template<typename T>
     static bool ReadConfigValue(const char *name, T& value)
     {
-        const std::string v = DoReadConfigValue(name);
+        const std::wstring v = DoReadConfigValue(name);
         if ( v.empty() )
             return false;
-        std::istringstream s(v);
+        std::wistringstream s(v);
         s >> value;
         return !s.fail();
     }
 
+    static bool ReadConfigValue(const char *name, std::string& value)
+    {
+        const std::wstring v = DoReadConfigValue(name);
+        if (v.empty())
+            return false;
+        value = WideToAnsi(v);
+        return true;
+    }
+
+    static bool ReadConfigValue(const char *name, std::wstring& value)
+    {
+        value = DoReadConfigValue(name);
+        return !value.empty();
+    }
+
     // Reads a value from registry, substituting default value if not present.
     template<typename T>
     static bool ReadConfigValue(const char *name, T& value, const T& defval)
@@ -225,8 +251,8 @@ private:
 
     static std::string GetDefaultRegistryPath();
 
-    static void DoWriteConfigValue(const char *name, const char *value);
-    static std::string DoReadConfigValue(const char *name);
+    static void DoWriteConfigValue(const char *name, const wchar_t *value);
+    static std::wstring DoReadConfigValue(const char *name);
 
 private:
     // guards the variables below:

src/ui.cpp

@@ -143,9 +143,9 @@ wxIcon GetApplicationIcon()
 
 struct EventPayload
 {
-    Appcast     appcast;
-    size_t      sizeDownloaded, sizeTotal;
-    std::string updateFile;
+    Appcast      appcast;
+    size_t       sizeDownloaded, sizeTotal;
+    std::wstring updateFile;
 };
 
 
@@ -283,7 +283,7 @@ public:
     // update download progress
     void DownloadProgress(size_t downloaded, size_t total);
     // change state into "update downloaded"
-    void StateUpdateDownloaded(const std::string& updateFile);
+    void StateUpdateDownloaded(const std::wstring& updateFile);
 
 private:
     void EnablePulsing(bool enable);
@@ -713,7 +713,7 @@ void UpdateDialog::DownloadProgress(size_t downloaded, size_t total)
 }
 
 
-void UpdateDialog::StateUpdateDownloaded(const std::string& updateFile)
+void UpdateDialog::StateUpdateDownloaded(const std::wstring& updateFile)
 {
     m_downloader->Join();
     delete m_downloader;
@@ -1221,7 +1221,7 @@ void UI::NotifyDownloadProgress(size_t downloaded, size_t total)
 
 
 /*static*/
-void UI::NotifyUpdateDownloaded(const std::string& updateFile)
+void UI::NotifyUpdateDownloaded(const std::wstring& updateFile)
 {
     UIThreadAccess uit;
     EventPayload payload;

src/ui.h

@@ -86,7 +86,7 @@ public:
     /**
         Notifies the UI that an update was downloaded.
      */
-    static void NotifyUpdateDownloaded(const std::string& updateFile);
+    static void NotifyUpdateDownloaded(const std::wstring& updateFile);
 
     /**
         Shows the WinSparkle window in "checking for updates..." state.

src/updatedownloader.cpp

@@ -45,7 +45,7 @@ namespace winsparkle
 namespace
 {
 
-std::string CreateUniqueTempDirectory()
+std::wstring CreateUniqueTempDirectory()
 {
     // We need to put downloaded updates into a directory of their own, because
     // if we put it in $TMP, some DLLs could be there and interfere with the
@@ -53,25 +53,23 @@ std::string CreateUniqueTempDirectory()
     //
     // This code creates a new randomized directory name and tries to create it;
     // this process is repeated if the directory already exists.
-    char tmpdir[MAX_PATH+1];
-    if ( GetTempPathA(sizeof(tmpdir), tmpdir) == 0 )
+    wchar_t tmpdir[MAX_PATH+1];
+    if ( GetTempPath(MAX_PATH+1, tmpdir) == 0 )
         throw Win32Exception("Cannot create temporary directory");
 
     for ( ;; )
     {
-        std::ostringstream sdir;
-        sdir << tmpdir << "Update-";
+        std::wstring dir(tmpdir);
+        dir += L"Update-";
 
         UUID uuid;
         UuidCreate(&uuid);
-        RPC_CSTR uuidStr;
-        UuidToStringA(&uuid, &uuidStr);
-        sdir << uuidStr;
-        RpcStringFreeA(&uuidStr);
+        RPC_WSTR uuidStr;
+        RPC_STATUS status = UuidToString(&uuid, &uuidStr);
+        dir += reinterpret_cast<wchar_t*>(uuidStr);
+        RpcStringFree(&uuidStr);
 
-        const std::string dir(sdir.str());
-
-        if ( CreateDirectoryA(dir.c_str(), NULL) )
+        if ( CreateDirectory(dir.c_str(), NULL) )
             return dir;
         else if ( GetLastError() != ERROR_ALREADY_EXISTS )
             throw Win32Exception("Cannot create temporary directory");
@@ -80,9 +78,9 @@ std::string CreateUniqueTempDirectory()
 
 struct UpdateDownloadSink : public IDownloadSink
 {
-    UpdateDownloadSink(Thread& thread, const std::string& dir)
+    UpdateDownloadSink(Thread& thread, const std::wstring& dir)
         : m_thread(thread),
-          m_dir(dir), m_path(""), m_file(NULL),
+          m_dir(dir), m_file(NULL),
           m_downloaded(0), m_total(0), m_lastUpdate(-1)
     {}
 
@@ -97,17 +95,17 @@ struct UpdateDownloadSink : public IDownloadSink
         }
     }
 
-    std::string GetFilePath(void) { return m_path; }
+    std::wstring GetFilePath(void) { return m_path; }
 
     virtual void SetLength(size_t l) { m_total = l; }
 
-    virtual void SetFilename(const std::string& filename)
+    virtual void SetFilename(const std::wstring& filename)
     {
         if ( m_file )
             throw std::runtime_error("Update file already set");
 
-        m_path = m_dir + "\\" + filename;
-        m_file = fopen(m_path.c_str(), "wb");
+        m_path = m_dir + L"\\" + filename;
+        m_file = _wfopen(m_path.c_str(), L"wb");
         if ( !m_file )
             throw std::runtime_error("Cannot save update file");
     }
@@ -136,8 +134,8 @@ struct UpdateDownloadSink : public IDownloadSink
     Thread& m_thread;
     size_t m_downloaded, m_total;
     FILE *m_file;
-    std::string m_dir;
-    std::string m_path;
+    std::wstring m_dir;
+    std::wstring m_path;
     clock_t m_lastUpdate;
 };
 
@@ -166,7 +164,7 @@ void UpdateDownloader::Run()
 
     try
     {
-      const std::string tmpdir = CreateUniqueTempDirectory();
+      const std::wstring tmpdir = CreateUniqueTempDirectory();
       Settings::WriteConfigValue("UpdateTempDir", tmpdir);
 
       UpdateDownloadSink sink(*this, tmpdir);