methods/aptmethod.h

   1 #ifndef APT_APTMETHOD_H
   2 #define APT_APTMETHOD_H
   3
   4 #include <apt-pkg/acquire-method.h>
   5 #include <apt-pkg/configuration.h>
   6 #include <apt-pkg/error.h>
   7
   8 #include <locale>
   9 #include <string>
  10
  11 #include <sys/time.h>
  12 #include <sys/types.h>
  13 #include <sys/stat.h>
  14 #include <unistd.h>
  15
  16 #include <apti18n.h>
  17
  18 class aptMethod : public pkgAcqMethod
  19 {
  20    char const * const Binary;
  21
  22 public:
  23    virtual bool Configuration(std::string Message) APT_OVERRIDE
  24    {
  25       if (pkgAcqMethod::Configuration(Message) == false)
  26          return false;
  27
  28       std::string const conf = std::string("Binary::") + Binary;
  29       _config->MoveSubTree(conf.c_str(), NULL);
  30
  31       DropPrivsOrDie();
  32
  33       return true;
  34    }
  35
  36    bool CalculateHashes(FetchItem const * const Itm, FetchResult &Res) const
  37    {
  38       Hashes Hash(Itm->ExpectedHashes);
  39       FileFd Fd;
  40       if (Fd.Open(Res.Filename, FileFd::ReadOnly) == false || Hash.AddFD(Fd) == false)
  41          return false;
  42       Res.TakeHashes(Hash);
  43       return true;
  44    }
  45
  46    void Warning(const char *Format,...)
  47    {
  48       va_list args;
  49       va_start(args,Format);
  50       PrintStatus("104 Warning", Format, args);
  51       va_end(args);
  52    }
  53
  54    bool TransferModificationTimes(char const * const From, char const * const To, time_t &LastModified)
  55    {
  56       if (strcmp(To, "/dev/null") == 0)
  57          return true;
  58
  59       struct stat Buf2;
  60       if (lstat(To, &Buf2) != 0 || S_ISLNK(Buf2.st_mode))
  61          return true;
  62
  63       struct stat Buf;
  64       if (stat(From, &Buf) != 0)
  65          return _error->Errno("stat",_("Failed to stat"));
  66
  67       // we don't use utimensat here for compatibility reasons: #738567
  68       struct timeval times[2];
  69       times[0].tv_sec = Buf.st_atime;
  70       LastModified = times[1].tv_sec = Buf.st_mtime;
  71       times[0].tv_usec = times[1].tv_usec = 0;
  72       if (utimes(To, times) != 0)
  73          return _error->Errno("utimes",_("Failed to set modification time"));
  74       return true;
  75    }
  76
  77    aptMethod(char const * const Binary, char const * const Ver, unsigned long const Flags) :
  78       pkgAcqMethod(Ver, Flags), Binary(Binary)
  79    {
  80       try {
  81          std::locale::global(std::locale(""));
  82       } catch (...) {
  83          setlocale(LC_ALL, "");
  84       }
  85    }
  86 };
  87
  88 #endif