class FileFdPrivate;
class FileFd
{
+ friend class FileFdPrivate;
+ friend class GzipFileFdPrivate;
+ friend class Bz2FileFdPrivate;
+ friend class LzmaFileFdPrivate;
+ friend class Lz4FileFdPrivate;
+ friend class DirectFileFdPrivate;
+ friend class PipedFileFdPrivate;
protected:
int iFd;
Exclusive = (1 << 3),
Atomic = Exclusive | (1 << 4),
Empty = (1 << 5),
+ BufferedWrite = (1 << 6),
WriteEmpty = ReadWrite | Create | Empty,
WriteExists = ReadWrite,
ReadOnlyGzip,
WriteAtomic = ReadWrite | Create | Atomic
};
- enum CompressMode { Auto = 'A', None = 'N', Extension = 'E', Gzip = 'G', Bzip2 = 'B', Lzma = 'L', Xz = 'X' };
+ enum CompressMode { Auto = 'A', None = 'N', Extension = 'E', Gzip = 'G', Bzip2 = 'B', Lzma = 'L', Xz = 'X', Lz4='4' };
inline bool Read(void *To,unsigned long long Size,bool AllowEof)
{
return Read(To,Size);
}
bool Read(void *To,unsigned long long Size,unsigned long long *Actual = 0);
+ bool static Read(int const Fd, void *To, unsigned long long Size, unsigned long long * const Actual = 0);
char* ReadLine(char *To, unsigned long long const Size);
+ bool Flush();
bool Write(const void *From,unsigned long long Size);
bool static Write(int Fd, const void *From, unsigned long long Size);
bool Seek(unsigned long long To);
bool Skip(unsigned long long To);
bool Truncate(unsigned long long To);
unsigned long long Tell();
+ // the size of the file content (compressed files will be uncompressed first)
unsigned long long Size();
+ // the size of the file itself
unsigned long long FileSize();
time_t ModificationTime();
to be able to support large files (>2 or >4 GB) properly.
This shouldn't happen all to often for the indexes, but deb's might be…
And as the auto-conversation converts a 'unsigned long *' to a 'bool'
- instead of 'unsigned long long *' we need to provide this explicitely -
+ instead of 'unsigned long long *' we need to provide this explicitly -
otherwise applications magically start to fail… */
- bool Read(void *To,unsigned long long Size,unsigned long *Actual) APT_DEPRECATED
+ bool Read(void *To,unsigned long long Size,unsigned long *Actual) APT_DEPRECATED_MSG("The Actual variable you pass in should be an unsigned long long")
{
unsigned long long R;
bool const T = Read(To, Size, &R);
// Simple manipulators
inline int Fd() {return iFd;};
inline void Fd(int fd) { OpenDescriptor(fd, ReadWrite);};
- gzFile gzFd() APT_DEPRECATED APT_PURE;
+ gzFile gzFd() APT_DEPRECATED_MSG("Implementation detail, do not use to be able to support bzip2, xz and co") APT_PURE;
inline bool IsOpen() {return iFd >= 0;};
inline bool Failed() {return (Flags & Fail) == Fail;};
inline bool Eof() {return (Flags & HitEof) == HitEof;};
inline bool IsCompressed() {return (Flags & Compressed) == Compressed;};
inline std::string &Name() {return FileName;};
-
- FileFd(std::string FileName,unsigned int const Mode,unsigned long AccessMode = 0666) : iFd(-1), Flags(0), d(NULL)
- {
- Open(FileName,Mode, None, AccessMode);
- };
- FileFd(std::string FileName,unsigned int const Mode, CompressMode Compress, unsigned long AccessMode = 0666) : iFd(-1), Flags(0), d(NULL)
- {
- Open(FileName,Mode, Compress, AccessMode);
- };
- FileFd() : iFd(-1), Flags(AutoClose), d(NULL) {};
- FileFd(int const Fd, unsigned int const Mode = ReadWrite, CompressMode Compress = None) : iFd(-1), Flags(0), d(NULL)
- {
- OpenDescriptor(Fd, Mode, Compress);
- };
- FileFd(int const Fd, bool const AutoClose) : iFd(-1), Flags(0), d(NULL)
- {
- OpenDescriptor(Fd, ReadWrite, None, AutoClose);
- };
+
+ FileFd(std::string FileName,unsigned int const Mode,unsigned long AccessMode = 0666);
+ FileFd(std::string FileName,unsigned int const Mode, CompressMode Compress, unsigned long AccessMode = 0666);
+ FileFd();
+ FileFd(int const Fd, unsigned int const Mode = ReadWrite, CompressMode Compress = None);
+ FileFd(int const Fd, bool const AutoClose);
virtual ~FileFd();
private:
- FileFdPrivate* d;
+ FileFdPrivate * d;
+ APT_HIDDEN FileFd & operator=(const FileFd &);
APT_HIDDEN bool OpenInternDescriptor(unsigned int const Mode, APT::Configuration::Compressor const &compressor);
// private helpers to set Fail flag and call _error->Error
bool RunScripts(const char *Cnf);
bool CopyFile(FileFd &From,FileFd &To);
+bool RemoveFile(char const * const Function, std::string const &FileName);
int GetLock(std::string File,bool Errors = true);
bool FileExists(std::string File);
bool RealFileExists(std::string File);
-bool DirectoryExists(std::string const &Path) APT_CONST;
+bool DirectoryExists(std::string const &Path);
bool CreateDirectory(std::string const &Parent, std::string const &Path);
time_t GetModificationTime(std::string const &Path);
bool Rename(std::string From, std::string To);
std::string GetTempDir();
+std::string GetTempDir(std::string const &User);
+FileFd* GetTempFile(std::string const &Prefix = "",
+ bool ImmediateUnlink = true,
+ FileFd * const TmpFd = NULL);
/** \brief Ensure the existence of the given Path
*
void MergeKeepFdsFromConfiguration(std::set<int> &keep_fds);
bool ExecWait(pid_t Pid,const char *Name,bool Reap = false);
+// check if the given file starts with a PGP cleartext signature
+bool StartsWithGPGClearTextSignature(std::string const &FileName);
+
+/** change file attributes to requested known good values
+ *
+ * The method skips the user:group setting if not root.
+ *
+ * @param requester is printed as functionname in error cases
+ * @param file is the file to be modified
+ * @param user is the (new) owner of the file, e.g. _apt
+ * @param group is the (new) group owning the file, e.g. root
+ * @param mode is the access mode of the file, e.g. 0644
+ */
+bool ChangeOwnerAndPermissionOfFile(char const * const requester, char const * const file, char const * const user, char const * const group, mode_t const mode);
+
+/**
+ * \brief Drop privileges
+ *
+ * Drop the privileges to the user _apt (or the one specified in
+ * APT::Sandbox::User). This does not set the supplementary group
+ * ids up correctly, it only uses the default group. Also prevent
+ * the process from gaining any new privileges afterwards, at least
+ * on Linux.
+ *
+ * \return true on success, false on failure with _error set
+ */
+bool DropPrivileges();
+
// File string manipulators
std::string flNotDir(std::string File);
std::string flNotFile(std::string File);
std::string flExtension(std::string File);
std::string flCombine(std::string Dir,std::string File);
+/** \brief Takes a file path and returns the absolute path
+ */
+std::string flAbsPath(std::string File);
+/** \brief removes superfluous /./ and // from path */
+APT_HIDDEN std::string flNormalize(std::string file);
+
// simple c++ glob
std::vector<std::string> Glob(std::string const &pattern, int flags=0);
+/** \brief Popen() implementation that execv() instead of using a shell
+ *
+ * \param Args the execv style command to run
+ * \param FileFd is a referenz to the FileFd to use for input or output
+ * \param Child a reference to the integer that stores the child pid
+ * Note that you must call ExecWait() or similar to cleanup
+ * \param Mode is either FileFd::ReadOnly or FileFd::WriteOnly
+ * \param CaptureStderr True if we should capture stderr in addition to stdout.
+ * (default: True).
+ * \return true on success, false on failure with _error set
+ */
+bool Popen(const char* Args[], FileFd &Fd, pid_t &Child, FileFd::OpenMode Mode, bool CaptureStderr);
+bool Popen(const char* Args[], FileFd &Fd, pid_t &Child, FileFd::OpenMode Mode);
+
+
#endif
projects / apt.git / blobdiff