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775dc8a9c0
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4 8ced0084-cf51-0410-be5f-012b33b47a6e
608 lines
21 KiB
C++
608 lines
21 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: src/msw/volume.cpp
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// Purpose: wxFSVolume - encapsulates system volume information
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// Author: George Policello
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// Modified by:
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// Created: 28 Jan 02
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// RCS-ID: $Id: volume.cpp 41903 2006-10-10 17:37:02Z PC $
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// Copyright: (c) 2002 George Policello
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#if wxUSE_FSVOLUME
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#include "wx/volume.h"
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#ifndef WX_PRECOMP
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#if wxUSE_GUI
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#include "wx/icon.h"
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#endif
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#include "wx/intl.h"
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#include "wx/hashmap.h"
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#endif // WX_PRECOMP
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#include "wx/dir.h"
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#include "wx/dynlib.h"
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#include "wx/arrimpl.cpp"
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#include <shellapi.h>
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#include <shlobj.h>
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#include "wx/msw/missing.h"
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#if wxUSE_BASE
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// Dynamic library function defs.
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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#if wxUSE_DYNLIB_CLASS
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static wxDynamicLibrary s_mprLib;
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#endif
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typedef DWORD (WINAPI* WNetOpenEnumPtr)(DWORD, DWORD, DWORD, LPNETRESOURCE, LPHANDLE);
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typedef DWORD (WINAPI* WNetEnumResourcePtr)(HANDLE, LPDWORD, LPVOID, LPDWORD);
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typedef DWORD (WINAPI* WNetCloseEnumPtr)(HANDLE);
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static WNetOpenEnumPtr s_pWNetOpenEnum;
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static WNetEnumResourcePtr s_pWNetEnumResource;
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static WNetCloseEnumPtr s_pWNetCloseEnum;
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// Globals/Statics
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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static long s_cancelSearch = FALSE;
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struct FileInfo
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{
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FileInfo(unsigned flag=0, wxFSVolumeKind type=wxFS_VOL_OTHER) :
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m_flags(flag), m_type(type) {}
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FileInfo(const FileInfo& other) { *this = other; }
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FileInfo& operator=(const FileInfo& other)
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{
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m_flags = other.m_flags;
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m_type = other.m_type;
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return *this;
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}
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unsigned m_flags;
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wxFSVolumeKind m_type;
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};
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WX_DECLARE_STRING_HASH_MAP(FileInfo, FileInfoMap);
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// Cygwin bug (?) destructor for global s_fileInfo is called twice...
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static FileInfoMap& GetFileInfoMap()
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{
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static FileInfoMap s_fileInfo(25);
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return s_fileInfo;
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}
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#define s_fileInfo (GetFileInfoMap())
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// Local helper functions.
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//=============================================================================
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// Function: GetBasicFlags
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// Purpose: Set basic flags, primarily wxFS_VOL_REMOTE and wxFS_VOL_REMOVABLE.
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// Notes: - Local and mapped drives are mounted by definition. We have no
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// way to determine mounted status of network drives, so assume that
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// all drives are mounted, and let the caller decide otherwise.
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// - Other flags are 'best guess' from type of drive. The system will
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// not report the file attributes with any degree of accuracy.
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//=============================================================================
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static unsigned GetBasicFlags(const wxChar* filename)
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{
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unsigned flags = wxFS_VOL_MOUNTED;
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//----------------------------------
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// 'Best Guess' based on drive type.
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//----------------------------------
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wxFSVolumeKind type;
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switch(GetDriveType(filename))
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{
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case DRIVE_FIXED:
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type = wxFS_VOL_DISK;
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break;
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case DRIVE_REMOVABLE:
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flags |= wxFS_VOL_REMOVABLE;
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type = wxFS_VOL_FLOPPY;
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break;
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case DRIVE_CDROM:
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flags |= wxFS_VOL_REMOVABLE | wxFS_VOL_READONLY;
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type = wxFS_VOL_CDROM;
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break;
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case DRIVE_REMOTE:
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flags |= wxFS_VOL_REMOTE;
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type = wxFS_VOL_NETWORK;
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break;
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case DRIVE_NO_ROOT_DIR:
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flags &= ~wxFS_VOL_MOUNTED;
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type = wxFS_VOL_OTHER;
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break;
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default:
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type = wxFS_VOL_OTHER;
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break;
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}
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//-----------------------------------------------------------------------
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// The following most likely will not modify anything not set above,
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// and will not work at all for network shares or empty CD ROM drives.
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// But it is a good check if the Win API ever gets better about reporting
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// this information.
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//-----------------------------------------------------------------------
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SHFILEINFO fi;
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long rc;
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rc = SHGetFileInfo(filename, 0, &fi, sizeof(fi), SHGFI_ATTRIBUTES );
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if (!rc)
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{
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wxLogError(_("Cannot read typename from '%s'!"), filename);
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}
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else
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{
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if (fi.dwAttributes & SFGAO_READONLY)
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flags |= wxFS_VOL_READONLY;
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if (fi.dwAttributes & SFGAO_REMOVABLE)
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flags |= wxFS_VOL_REMOVABLE;
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}
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//------------------
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// Flags are cached.
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//------------------
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s_fileInfo[filename] = FileInfo(flags, type);
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return flags;
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} // GetBasicFlags
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//=============================================================================
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// Function: FilteredAdd
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// Purpose: Add a file to the list if it meets the filter requirement.
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// Notes: - See GetBasicFlags for remarks about the Mounted flag.
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//=============================================================================
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static bool FilteredAdd(wxArrayString& list, const wxChar* filename,
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unsigned flagsSet, unsigned flagsUnset)
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{
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bool accept = true;
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unsigned flags = GetBasicFlags(filename);
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if (flagsSet & wxFS_VOL_MOUNTED && !(flags & wxFS_VOL_MOUNTED))
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accept = false;
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else if (flagsUnset & wxFS_VOL_MOUNTED && (flags & wxFS_VOL_MOUNTED))
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accept = false;
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else if (flagsSet & wxFS_VOL_REMOVABLE && !(flags & wxFS_VOL_REMOVABLE))
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accept = false;
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else if (flagsUnset & wxFS_VOL_REMOVABLE && (flags & wxFS_VOL_REMOVABLE))
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accept = false;
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else if (flagsSet & wxFS_VOL_READONLY && !(flags & wxFS_VOL_READONLY))
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accept = false;
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else if (flagsUnset & wxFS_VOL_READONLY && (flags & wxFS_VOL_READONLY))
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accept = false;
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else if (flagsSet & wxFS_VOL_REMOTE && !(flags & wxFS_VOL_REMOTE))
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accept = false;
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else if (flagsUnset & wxFS_VOL_REMOTE && (flags & wxFS_VOL_REMOTE))
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accept = false;
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// Add to the list if passed the filter.
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if (accept)
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list.Add(filename);
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return accept;
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} // FilteredAdd
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//=============================================================================
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// Function: BuildListFromNN
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// Purpose: Append or remove items from the list
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// Notes: - There is no way to find all disconnected NN items, or even to find
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// all items while determining which are connected and not. So this
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// function will find either all items or connected items.
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//=============================================================================
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static void BuildListFromNN(wxArrayString& list, NETRESOURCE* pResSrc,
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unsigned flagsSet, unsigned flagsUnset)
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{
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HANDLE hEnum;
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int rc;
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//-----------------------------------------------
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// Scope may be all drives or all mounted drives.
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//-----------------------------------------------
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unsigned scope = RESOURCE_GLOBALNET;
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if (flagsSet & wxFS_VOL_MOUNTED)
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scope = RESOURCE_CONNECTED;
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//----------------------------------------------------------------------
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// Enumerate all items, adding only non-containers (ie. network shares).
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// Containers cause a recursive call to this function for their own
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// enumeration.
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//----------------------------------------------------------------------
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if (rc = s_pWNetOpenEnum(scope, RESOURCETYPE_DISK, 0, pResSrc, &hEnum), rc == NO_ERROR)
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{
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DWORD count = 1;
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DWORD size = 256;
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NETRESOURCE* pRes = (NETRESOURCE*)malloc(size);
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memset(pRes, 0, sizeof(NETRESOURCE));
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while (rc = s_pWNetEnumResource(hEnum, &count, pRes, &size), rc == NO_ERROR || rc == ERROR_MORE_DATA)
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{
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if (s_cancelSearch)
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break;
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if (rc == ERROR_MORE_DATA)
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{
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pRes = (NETRESOURCE*)realloc(pRes, size);
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count = 1;
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}
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else if (count == 1)
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{
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// Enumerate the container.
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if (pRes->dwUsage & RESOURCEUSAGE_CONTAINER)
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{
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BuildListFromNN(list, pRes, flagsSet, flagsUnset);
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}
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// Add the network share.
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else
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{
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wxString filename(pRes->lpRemoteName);
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if (!filename.empty())
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{
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if (filename.Last() != '\\')
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filename.Append('\\');
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// The filter function will not know mounted from unmounted, and neither do we unless
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// we are iterating using RESOURCE_CONNECTED, in which case they all are mounted.
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// Volumes on disconnected servers, however, will correctly show as unmounted.
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FilteredAdd(list, filename, flagsSet, flagsUnset&~wxFS_VOL_MOUNTED);
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if (scope == RESOURCE_GLOBALNET)
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s_fileInfo[filename].m_flags &= ~wxFS_VOL_MOUNTED;
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}
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}
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}
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else if (count == 0)
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break;
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}
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free(pRes);
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s_pWNetCloseEnum(hEnum);
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}
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} // BuildListFromNN
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//=============================================================================
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// Function: CompareFcn
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// Purpose: Used to sort the NN list alphabetically, case insensitive.
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//=============================================================================
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static int CompareFcn(const wxString& first, const wxString& second)
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{
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return wxStricmp(first.c_str(), second.c_str());
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} // CompareFcn
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//=============================================================================
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// Function: BuildRemoteList
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// Purpose: Append Network Neighborhood items to the list.
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// Notes: - Mounted gets transalated into Connected. FilteredAdd is told
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// to ignore the Mounted flag since we need to handle it in a weird
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// way manually.
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// - The resulting list is sorted alphabetically.
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//=============================================================================
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static bool BuildRemoteList(wxArrayString& list, NETRESOURCE* pResSrc,
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unsigned flagsSet, unsigned flagsUnset)
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{
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// NN query depends on dynamically loaded library.
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if (!s_pWNetOpenEnum || !s_pWNetEnumResource || !s_pWNetCloseEnum)
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{
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wxLogError(_("Failed to load mpr.dll."));
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return false;
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}
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// Don't waste time doing the work if the flags conflict.
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if (flagsSet & wxFS_VOL_MOUNTED && flagsUnset & wxFS_VOL_MOUNTED)
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return false;
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//----------------------------------------------
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// Generate the list according to the flags set.
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//----------------------------------------------
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BuildListFromNN(list, pResSrc, flagsSet, flagsUnset);
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list.Sort(CompareFcn);
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//-------------------------------------------------------------------------
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// If mounted only is requested, then we only need one simple pass.
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// Otherwise, we need to build a list of all NN volumes and then apply the
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// list of mounted drives to it.
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//-------------------------------------------------------------------------
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if (!(flagsSet & wxFS_VOL_MOUNTED))
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{
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// generate.
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wxArrayString mounted;
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BuildListFromNN(mounted, pResSrc, flagsSet | wxFS_VOL_MOUNTED, flagsUnset & ~wxFS_VOL_MOUNTED);
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mounted.Sort(CompareFcn);
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// apply list from bottom to top to preserve indexes if removing items.
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ssize_t iList = list.GetCount()-1;
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for (ssize_t iMounted = mounted.GetCount()-1; iMounted >= 0 && iList >= 0; iMounted--)
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{
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int compare;
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wxString all(list[iList]);
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wxString mount(mounted[iMounted]);
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while (compare =
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wxStricmp(list[iList].c_str(), mounted[iMounted].c_str()),
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compare > 0 && iList >= 0)
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{
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iList--;
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all = list[iList];
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}
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if (compare == 0)
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{
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// Found the element. Remove it or mark it mounted.
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if (flagsUnset & wxFS_VOL_MOUNTED)
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list.RemoveAt(iList);
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else
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s_fileInfo[list[iList]].m_flags |= wxFS_VOL_MOUNTED;
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}
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iList--;
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}
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}
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return true;
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} // BuildRemoteList
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// wxFSVolume
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//=============================================================================
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// Function: GetVolumes
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// Purpose: Generate and return a list of all volumes (drives) available.
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// Notes:
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//=============================================================================
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wxArrayString wxFSVolumeBase::GetVolumes(int flagsSet, int flagsUnset)
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{
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::InterlockedExchange(&s_cancelSearch, FALSE); // reset
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#if wxUSE_DYNLIB_CLASS
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if (!s_mprLib.IsLoaded() && s_mprLib.Load(_T("mpr.dll")))
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{
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#ifdef UNICODE
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s_pWNetOpenEnum = (WNetOpenEnumPtr)s_mprLib.GetSymbol(_T("WNetOpenEnumW"));
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s_pWNetEnumResource = (WNetEnumResourcePtr)s_mprLib.GetSymbol(_T("WNetEnumResourceW"));
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#else
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s_pWNetOpenEnum = (WNetOpenEnumPtr)s_mprLib.GetSymbol(_T("WNetOpenEnumA"));
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s_pWNetEnumResource = (WNetEnumResourcePtr)s_mprLib.GetSymbol(_T("WNetEnumResourceA"));
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#endif
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s_pWNetCloseEnum = (WNetCloseEnumPtr)s_mprLib.GetSymbol(_T("WNetCloseEnum"));
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}
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#endif
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wxArrayString list;
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//-------------------------------
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// Local and mapped drives first.
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//-------------------------------
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// Allocate the required space for the API call.
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const DWORD chars = GetLogicalDriveStrings(0, NULL);
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TCHAR* buf = new TCHAR[chars+1];
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// Get the list of drives.
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GetLogicalDriveStrings(chars, buf);
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// Parse the list into an array, applying appropriate filters.
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TCHAR *pVol;
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pVol = buf;
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while (*pVol)
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{
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FilteredAdd(list, pVol, flagsSet, flagsUnset);
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pVol = pVol + wxStrlen(pVol) + 1;
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}
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// Cleanup.
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delete[] buf;
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//---------------------------
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// Network Neighborhood next.
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//---------------------------
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// not exclude remote and not removable
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if (!(flagsUnset & wxFS_VOL_REMOTE) &&
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!(flagsSet & wxFS_VOL_REMOVABLE)
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)
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{
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// The returned list will be sorted alphabetically. We don't pass
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// our in since we don't want to change to order of the local drives.
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wxArrayString nn;
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if (BuildRemoteList(nn, 0, flagsSet, flagsUnset))
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{
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for (size_t idx = 0; idx < nn.GetCount(); idx++)
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list.Add(nn[idx]);
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}
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}
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return list;
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} // GetVolumes
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//=============================================================================
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// Function: CancelSearch
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// Purpose: Instruct an active search to stop.
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// Notes: - This will only sensibly be called by a thread other than the one
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// performing the search. This is the only thread-safe function
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// provided by the class.
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//=============================================================================
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void wxFSVolumeBase::CancelSearch()
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{
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::InterlockedExchange(&s_cancelSearch, TRUE);
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} // CancelSearch
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//=============================================================================
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// Function: constructor
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// Purpose: default constructor
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//=============================================================================
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wxFSVolumeBase::wxFSVolumeBase()
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{
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m_isOk = false;
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} // wxVolume
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//=============================================================================
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// Function: constructor
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// Purpose: constructor that calls Create
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//=============================================================================
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wxFSVolumeBase::wxFSVolumeBase(const wxString& name)
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{
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Create(name);
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} // wxVolume
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//=============================================================================
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// Function: Create
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// Purpose: Finds, logs in, etc. to the request volume.
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//=============================================================================
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bool wxFSVolumeBase::Create(const wxString& name)
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{
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// assume fail.
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m_isOk = false;
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// supplied.
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m_volName = name;
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// Display name.
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SHFILEINFO fi;
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long rc = SHGetFileInfo(m_volName, 0, &fi, sizeof(fi), SHGFI_DISPLAYNAME);
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if (!rc)
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{
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wxLogError(_("Cannot read typename from '%s'!"), m_volName.c_str());
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return m_isOk;
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}
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m_dispName = fi.szDisplayName;
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// all tests passed.
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return m_isOk = true;
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} // Create
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//=============================================================================
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// Function: IsOk
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// Purpose: returns true if the volume is legal.
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// Notes: For fixed disks, it must exist. For removable disks, it must also
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// be present. For Network Shares, it must also be logged in, etc.
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//=============================================================================
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bool wxFSVolumeBase::IsOk() const
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{
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return m_isOk;
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} // IsOk
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//=============================================================================
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// Function: GetKind
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// Purpose: Return the type of the volume.
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//=============================================================================
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wxFSVolumeKind wxFSVolumeBase::GetKind() const
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{
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if (!m_isOk)
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return wxFS_VOL_OTHER;
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FileInfoMap::iterator itr = s_fileInfo.find(m_volName);
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if (itr == s_fileInfo.end())
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return wxFS_VOL_OTHER;
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return itr->second.m_type;
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}
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//=============================================================================
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// Function: GetFlags
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// Purpose: Return the caches flags for this volume.
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// Notes: - Returns -1 if no flags were cached.
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//=============================================================================
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int wxFSVolumeBase::GetFlags() const
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{
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if (!m_isOk)
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return -1;
|
|
|
|
FileInfoMap::iterator itr = s_fileInfo.find(m_volName);
|
|
if (itr == s_fileInfo.end())
|
|
return -1;
|
|
|
|
return itr->second.m_flags;
|
|
} // GetFlags
|
|
|
|
#endif // wxUSE_BASE
|
|
|
|
// ============================================================================
|
|
// wxFSVolume
|
|
// ============================================================================
|
|
|
|
#if wxUSE_GUI
|
|
|
|
void wxFSVolume::InitIcons()
|
|
{
|
|
m_icons.Alloc(wxFS_VOL_ICO_MAX);
|
|
wxIcon null;
|
|
for (int idx = 0; idx < wxFS_VOL_ICO_MAX; idx++)
|
|
m_icons.Add(null);
|
|
}
|
|
|
|
//=============================================================================
|
|
// Function: GetIcon
|
|
// Purpose: return the requested icon.
|
|
//=============================================================================
|
|
|
|
wxIcon wxFSVolume::GetIcon(wxFSIconType type) const
|
|
{
|
|
wxCHECK_MSG( type >= 0 && (size_t)type < m_icons.GetCount(), wxNullIcon,
|
|
_T("wxFSIconType::GetIcon(): invalid icon index") );
|
|
|
|
// Load on demand.
|
|
if (m_icons[type].IsNull())
|
|
{
|
|
UINT flags = SHGFI_ICON;
|
|
switch (type)
|
|
{
|
|
case wxFS_VOL_ICO_SMALL:
|
|
flags |= SHGFI_SMALLICON;
|
|
break;
|
|
|
|
case wxFS_VOL_ICO_LARGE:
|
|
flags |= SHGFI_SHELLICONSIZE;
|
|
break;
|
|
|
|
case wxFS_VOL_ICO_SEL_SMALL:
|
|
flags |= SHGFI_SMALLICON | SHGFI_OPENICON;
|
|
break;
|
|
|
|
case wxFS_VOL_ICO_SEL_LARGE:
|
|
flags |= SHGFI_SHELLICONSIZE | SHGFI_OPENICON;
|
|
break;
|
|
|
|
case wxFS_VOL_ICO_MAX:
|
|
wxFAIL_MSG(_T("wxFS_VOL_ICO_MAX is not valid icon type"));
|
|
break;
|
|
}
|
|
|
|
SHFILEINFO fi;
|
|
long rc = SHGetFileInfo(m_volName, 0, &fi, sizeof(fi), flags);
|
|
m_icons[type].SetHICON((WXHICON)fi.hIcon);
|
|
if (!rc || !fi.hIcon)
|
|
wxLogError(_("Cannot load icon from '%s'."), m_volName.c_str());
|
|
}
|
|
|
|
return m_icons[type];
|
|
} // GetIcon
|
|
|
|
#endif // wxUSE_GUI
|
|
|
|
#endif // wxUSE_FSVOLUME
|