From 19008b7bb87c7fdbc2c6fd9b44f6ab24ca4d6c47 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?V=C3=A1clav=20Slav=C3=ADk?= Date: Tue, 18 Sep 2001 22:34:10 +0000 Subject: [PATCH] made wxLocalFSHandler public and added Chroot to it git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@11642 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775 --- include/wx/filesys.h | 253 ++++++++++++++++++++++------------------- src/common/filesys.cpp | 21 ++-- 2 files changed, 142 insertions(+), 132 deletions(-) diff --git a/include/wx/filesys.h b/include/wx/filesys.h index da754cfe8a..071b33ebe9 100644 --- a/include/wx/filesys.h +++ b/include/wx/filesys.h @@ -43,42 +43,39 @@ class wxFileSystem; class WXDLLEXPORT wxFSFile : public wxObject { - private: - wxInputStream *m_Stream; - wxString m_Location; - wxString m_MimeType; - wxString m_Anchor; - wxDateTime m_Modif; +public: + wxFSFile(wxInputStream *stream, const wxString& loc, + const wxString& mimetype, const wxString& anchor, + wxDateTime modif) + { + m_Stream = stream; + m_Location = loc; + m_MimeType = mimetype; m_MimeType.MakeLower(); + m_Anchor = anchor; + m_Modif = modif; + } + virtual ~wxFSFile() { if (m_Stream) delete m_Stream; } - public: - wxFSFile(wxInputStream *stream, const wxString& loc, - const wxString& mimetype, const wxString& anchor, - wxDateTime modif) - { - m_Stream = stream; - m_Location = loc; - m_MimeType = mimetype; m_MimeType.MakeLower(); - m_Anchor = anchor; - m_Modif = modif; - } - virtual ~wxFSFile() - { - if (m_Stream) delete m_Stream; - } + // returns stream. This doesn't _create_ stream, it only returns + // pointer to it!! + wxInputStream *GetStream() const {return m_Stream;} - wxInputStream *GetStream() const {return m_Stream;} - // returns stream. This doesn't _create_ stream, it only returns - // pointer to it!! + // returns file's mime type + const wxString& GetMimeType() const {return m_MimeType;} - const wxString& GetMimeType() const {return m_MimeType;} - // returns file's mime type + // returns the original location (aka filename) of the file + const wxString& GetLocation() const {return m_Location;} - const wxString& GetLocation() const {return m_Location;} - // returns the original location (aka filename) of the file + const wxString& GetAnchor() const {return m_Anchor;} - const wxString& GetAnchor() const {return m_Anchor;} - - wxDateTime GetModificationTime() const {return m_Modif;} + wxDateTime GetModificationTime() const {return m_Modif;} + +private: + wxInputStream *m_Stream; + wxString m_Location; + wxString m_MimeType; + wxString m_Anchor; + wxDateTime m_Modif; }; @@ -94,47 +91,47 @@ class WXDLLEXPORT wxFSFile : public wxObject class WXDLLEXPORT wxFileSystemHandler : public wxObject { +public: + wxFileSystemHandler() : wxObject() {} + + // returns TRUE if this handler is able to open given location + virtual bool CanOpen(const wxString& location) = 0; + + // opens given file and returns pointer to input stream. + // Returns NULL if opening failed. + // The location is always absolute path. + virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location) = 0; + + // Finds first/next file that matches spec wildcard. flags can be wxDIR for restricting + // the query to directories or wxFILE for files only or 0 for either. + // Returns filename or empty string if no more matching file exists + virtual wxString FindFirst(const wxString& spec, int flags = 0); + virtual wxString FindNext(); + +protected: + // returns protocol ("file", "http", "tar" etc.) The last (most right) + // protocol is used: + // {it returns "tar" for "file:subdir/archive.tar.gz#tar:/README.txt"} + wxString GetProtocol(const wxString& location) const; + + // returns left part of address: + // {it returns "file:subdir/archive.tar.gz" for "file:subdir/archive.tar.gz#tar:/README.txt"} + wxString GetLeftLocation(const wxString& location) const; + + // returns anchor part of address: + // {it returns "anchor" for "file:subdir/archive.tar.gz#tar:/README.txt#anchor"} + // NOTE: anchor is NOT a part of GetLeftLocation()'s return value + wxString GetAnchor(const wxString& location) const; + + // returns right part of address: + // {it returns "/README.txt" for "file:subdir/archive.tar.gz#tar:/README.txt"} + wxString GetRightLocation(const wxString& location) const; + + // Returns MIME type of the file - w/o need to open it + // (default behaviour is that it returns type based on extension) + wxString GetMimeTypeFromExt(const wxString& location); + DECLARE_ABSTRACT_CLASS(wxFileSystemHandler) - - public: - wxFileSystemHandler() : wxObject() {} - - virtual bool CanOpen(const wxString& location) = 0; - // returns TRUE if this handler is able to open given location - - virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location) = 0; - // opens given file and returns pointer to input stream. - // Returns NULL if opening failed. - // The location is always absolute path. - - virtual wxString FindFirst(const wxString& spec, int flags = 0); - virtual wxString FindNext(); - // Finds first/next file that matches spec wildcard. flags can be wxDIR for restricting - // the query to directories or wxFILE for files only or 0 for either. - // Returns filename or empty string if no more matching file exists - - protected: - wxString GetProtocol(const wxString& location) const; - // returns protocol ("file", "http", "tar" etc.) The last (most right) - // protocol is used: - // {it returns "tar" for "file:subdir/archive.tar.gz#tar:/README.txt"} - - wxString GetLeftLocation(const wxString& location) const; - // returns left part of address: - // {it returns "file:subdir/archive.tar.gz" for "file:subdir/archive.tar.gz#tar:/README.txt"} - - wxString GetAnchor(const wxString& location) const; - // returns anchor part of address: - // {it returns "anchor" for "file:subdir/archive.tar.gz#tar:/README.txt#anchor"} - // NOTE: anchor is NOT a part of GetLeftLocation()'s return value - - wxString GetRightLocation(const wxString& location) const; - // returns right part of address: - // {it returns "/README.txt" for "file:subdir/archive.tar.gz#tar:/README.txt"} - - wxString GetMimeTypeFromExt(const wxString& location); - // Returns MIME type of the file - w/o need to open it - // (default behaviour is that it returns type based on extension) }; @@ -148,54 +145,53 @@ class WXDLLEXPORT wxFileSystemHandler : public wxObject class WXDLLEXPORT wxFileSystem : public wxObject { +public: + wxFileSystem() : wxObject() {m_Path = m_LastName = wxEmptyString; m_Handlers.DeleteContents(TRUE); m_FindFileHandler = NULL;} + + // sets the current location. Every call to OpenFile is + // relative to this location. + // NOTE !! + // unless is_dir = TRUE 'location' is *not* the directory but + // file contained in this directory + // (so ChangePathTo("dir/subdir/xh.htm") sets m_Path to "dir/subdir/") + void ChangePathTo(const wxString& location, bool is_dir = FALSE); + + wxString GetPath() const {return m_Path;} + + // opens given file and returns pointer to input stream. + // Returns NULL if opening failed. + // It first tries to open the file in relative scope + // (based on ChangePathTo()'s value) and then as an absolute + // path. + wxFSFile* OpenFile(const wxString& location); + + // Finds first/next file that matches spec wildcard. flags can be wxDIR for restricting + // the query to directories or wxFILE for files only or 0 for either. + // Returns filename or empty string if no more matching file exists + wxString FindFirst(const wxString& spec, int flags = 0); + wxString FindNext(); + + // Adds FS handler. + // In fact, this class is only front-end to the FS hanlers :-) + static void AddHandler(wxFileSystemHandler *handler); + + // remove all items from the m_Handlers list + static void CleanUpHandlers(); + +protected: + wxString m_Path; + // the path (location) we are currently in + // this is path, not file! + // (so if you opened test/demo.htm, it is + // "test/", not "test/demo.htm") + wxString m_LastName; + // name of last opened file (full path) + static wxList m_Handlers; + // list of FS handlers + wxFileSystemHandler *m_FindFileHandler; + // handler that succeed in FindFirst query + DECLARE_DYNAMIC_CLASS(wxFileSystem) - - public: - wxFileSystem() : wxObject() {m_Path = m_LastName = wxEmptyString; m_Handlers.DeleteContents(TRUE); m_FindFileHandler = NULL;} - - void ChangePathTo(const wxString& location, bool is_dir = FALSE); - // sets the current location. Every call to OpenFile is - // relative to this location. - // NOTE !! - // unless is_dir = TRUE 'location' is *not* the directory but - // file contained in this directory - // (so ChangePathTo("dir/subdir/xh.htm") sets m_Path to "dir/subdir/") - - wxString GetPath() const {return m_Path;} - - wxFSFile* OpenFile(const wxString& location); - // opens given file and returns pointer to input stream. - // Returns NULL if opening failed. - // It first tries to open the file in relative scope - // (based on ChangePathTo()'s value) and then as an absolute - // path. - - wxString FindFirst(const wxString& spec, int flags = 0); - wxString FindNext(); - // Finds first/next file that matches spec wildcard. flags can be wxDIR for restricting - // the query to directories or wxFILE for files only or 0 for either. - // Returns filename or empty string if no more matching file exists - - - static void AddHandler(wxFileSystemHandler *handler); - // Adds FS handler. - // In fact, this class is only front-end to the FS hanlers :-) - - static void CleanUpHandlers(); - // remove all items from the m_Handlers list - - private: - wxString m_Path; - // the path (location) we are currently in - // this is path, not file! - // (so if you opened test/demo.htm, it is - // "test/", not "test/demo.htm") - wxString m_LastName; - // name of last opened file (full path) - static wxList m_Handlers; - // list of FS handlers - wxFileSystemHandler *m_FindFileHandler; - // handler that succeed in FindFirst query }; @@ -222,6 +218,27 @@ special characters : */ + +class wxLocalFSHandler : public wxFileSystemHandler +{ +public: + virtual bool CanOpen(const wxString& location); + virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location); + virtual wxString FindFirst(const wxString& spec, int flags = 0); + virtual wxString FindNext(); + + // wxLocalFSHandler will prefix all filenames with 'root' before accessing + // files on disk. This effectively makes 'root' the top-level directory + // and prevents access to files outside this directory. + // (This is similar to Unix command 'chroot'.) + static void Chroot(const wxString& root) { ms_root = root; } + +protected: + static wxString ms_root; +}; + + + #endif // wxUSE_FILESYSTEM diff --git a/src/common/filesys.cpp b/src/common/filesys.cpp index 8509d41a02..f350965e66 100644 --- a/src/common/filesys.cpp +++ b/src/common/filesys.cpp @@ -138,15 +138,8 @@ wxString wxFileSystemHandler::FindNext() // wxLocalFSHandler //-------------------------------------------------------------------------------- -class wxLocalFSHandler : public wxFileSystemHandler -{ - public: - virtual bool CanOpen(const wxString& location); - virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location); - virtual wxString FindFirst(const wxString& spec, int flags = 0); - virtual wxString FindNext(); -}; +wxString wxLocalFSHandler::ms_root; bool wxLocalFSHandler::CanOpen(const wxString& location) { @@ -156,23 +149,23 @@ bool wxLocalFSHandler::CanOpen(const wxString& location) wxFSFile* wxLocalFSHandler::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& location) { // location has Unix path separators - wxString right = GetRightLocation(location); - wxFileName fn( right, wxPATH_UNIX ); + wxString right = ms_root + GetRightLocation(location); + wxFileName fn(right, wxPATH_UNIX); - if (!wxFileExists( fn.GetFullPath() )) + if (!wxFileExists(fn.GetFullPath())) return (wxFSFile*) NULL; - return new wxFSFile(new wxFileInputStream( fn.GetFullPath() ), + return new wxFSFile(new wxFileInputStream(fn.GetFullPath()), right, GetMimeTypeFromExt(location), GetAnchor(location), - wxDateTime(wxFileModificationTime( fn.GetFullPath() ))); + wxDateTime(wxFileModificationTime(fn.GetFullPath()))); } wxString wxLocalFSHandler::FindFirst(const wxString& spec, int flags) { - wxString right = GetRightLocation(spec); + wxString right = ms_root + GetRightLocation(spec); return wxFindFirstFile(right, flags); }