DropPrivs in the solvers (just to be on the safe side)

[apt.git] / apt-pkg / contrib / fileutl.h

diff --git a/apt-pkg/contrib/fileutl.h b/apt-pkg/contrib/fileutl.h
index 147535df1b6f7f1f3ada211d0426df3c2ed3349a..683c04157b473f4347669a061e75e25cef635a09 100644 (file)
--- a/apt-pkg/contrib/fileutl.h
+++ b/apt-pkg/contrib/fileutl.h
@@ -26,6 +26,8 @@
 
 #include <string>
 #include <vector>
+#include <set>
+#include <time.h>
 
 #include <zlib.h>
 
@@ -78,6 +80,7 @@ class FileFd
    bool Read(void *To,unsigned long long Size,unsigned long long *Actual = 0);
    char* ReadLine(char *To, unsigned long long const Size);
    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);
@@ -92,7 +95,7 @@ class FileFd
       And as the auto-conversation converts a 'unsigned long *' to a 'bool'
       instead of 'unsigned long long *' we need to provide this explicitely -
       otherwise applications magically start to fail… */
-   __deprecated bool Read(void *To,unsigned long long Size,unsigned long *Actual)
+   bool Read(void *To,unsigned long long Size,unsigned long *Actual) APT_DEPRECATED
    {
        unsigned long long R;
        bool const T = Read(To, Size, &R);
@@ -100,10 +103,10 @@ class FileFd
        return T;
    }
 
-   bool Open(std::string FileName,unsigned int const Mode,CompressMode Compress,unsigned long const Perms = 0666);
-   bool Open(std::string FileName,unsigned int const Mode,APT::Configuration::Compressor const &compressor,unsigned long const Perms = 0666);
-   inline bool Open(std::string const &FileName,unsigned int const Mode, unsigned long const Perms = 0666) {
-      return Open(FileName, Mode, None, Perms);
+   bool Open(std::string FileName,unsigned int const Mode,CompressMode Compress,unsigned long const AccessMode = 0666);
+   bool Open(std::string FileName,unsigned int const Mode,APT::Configuration::Compressor const &compressor,unsigned long const AccessMode = 0666);
+   inline bool Open(std::string const &FileName,unsigned int const Mode, unsigned long const AccessMode = 0666) {
+      return Open(FileName, Mode, None, AccessMode);
    };
    bool OpenDescriptor(int Fd, unsigned int const Mode, CompressMode Compress, bool AutoClose=false);
    bool OpenDescriptor(int Fd, unsigned int const Mode, APT::Configuration::Compressor const &compressor, bool AutoClose=false);
@@ -115,8 +118,8 @@ class FileFd
    
    // Simple manipulators
    inline int Fd() {return iFd;};
-   inline void Fd(int fd) {iFd = fd;};
-   __deprecated gzFile gzFd();
+   inline void Fd(int fd) { OpenDescriptor(fd, ReadWrite);};
+   gzFile gzFd() APT_DEPRECATED APT_PURE;
 
    inline bool IsOpen() {return iFd >= 0;};
    inline bool Failed() {return (Flags & Fail) == Fail;};
@@ -126,13 +129,13 @@ class FileFd
    inline bool IsCompressed() {return (Flags & Compressed) == Compressed;};
    inline std::string &Name() {return FileName;};
    
-   FileFd(std::string FileName,unsigned int const Mode,unsigned long Perms = 0666) : iFd(-1), Flags(0), d(NULL)
+   FileFd(std::string FileName,unsigned int const Mode,unsigned long AccessMode = 0666) : iFd(-1), Flags(0), d(NULL)
    {
-      Open(FileName,Mode, None, Perms);
+      Open(FileName,Mode, None, AccessMode);
    };
-   FileFd(std::string FileName,unsigned int const Mode, CompressMode Compress, unsigned long Perms = 0666) : iFd(-1), Flags(0), d(NULL)
+   FileFd(std::string FileName,unsigned int const Mode, CompressMode Compress, unsigned long AccessMode = 0666) : iFd(-1), Flags(0), d(NULL)
    {
-      Open(FileName,Mode, Compress, Perms);
+      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)
@@ -147,7 +150,11 @@ class FileFd
 
    private:
    FileFdPrivate* d;
-   bool OpenInternDescriptor(unsigned int const Mode, APT::Configuration::Compressor const &compressor);
+   APT_HIDDEN bool OpenInternDescriptor(unsigned int const Mode, APT::Configuration::Compressor const &compressor);
+
+   // private helpers to set Fail flag and call _error->Error
+   APT_HIDDEN bool FileFdErrno(const char* Function, const char* Description,...) APT_PRINTF(3) APT_COLD;
+   APT_HIDDEN bool FileFdError(const char* Description,...) APT_PRINTF(2) APT_COLD;
 };
 
 bool RunScripts(const char *Cnf);
@@ -155,9 +162,12 @@ bool CopyFile(FileFd &From,FileFd &To);
 int GetLock(std::string File,bool Errors = true);
 bool FileExists(std::string File);
 bool RealFileExists(std::string File);
-bool DirectoryExists(std::string const &Path) __attrib_const;
+bool DirectoryExists(std::string const &Path) APT_CONST;
 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();
 
 /** \brief Ensure the existence of the given Path
  *
@@ -171,13 +181,19 @@ std::vector<std::string> GetListOfFilesInDir(std::string const &Dir, std::string
                                        bool const &SortList, bool const &AllowNoExt=false);
 std::vector<std::string> GetListOfFilesInDir(std::string const &Dir, std::vector<std::string> const &Ext,
                                        bool const &SortList);
+std::vector<std::string> GetListOfFilesInDir(std::string const &Dir, bool SortList);
 std::string SafeGetCWD();
 void SetCloseExec(int Fd,bool Close);
 void SetNonBlock(int Fd,bool Block);
 bool WaitFd(int Fd,bool write = false,unsigned long timeout = 0);
 pid_t ExecFork();
+pid_t ExecFork(std::set<int> keep_fds);
+void MergeKeepFdsFromConfiguration(std::set<int> &keep_fds);
 bool ExecWait(pid_t Pid,const char *Name,bool Reap = false);
 
+// process releated
+bool DropPrivs();
+
 // File string manipulators
 std::string flNotDir(std::string File);
 std::string flNotFile(std::string File);
@@ -185,4 +201,7 @@ std::string flNoLink(std::string File);
 std::string flExtension(std::string File);
 std::string flCombine(std::string Dir,std::string File);
 
+// simple c++ glob
+std::vector<std::string> Glob(std::string const &pattern, int flags=0);
+
 #endif