* apt-pkg/contrib/fileutl.{cc,h}:

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

diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc
index f4ab066d744424dcb4bc34d8b465b1947b16670f..85dc6f6006a7ed963dd017459b8c19e65bf442ac 100644 (file)
--- a/apt-pkg/contrib/fileutl.cc
+++ b/apt-pkg/contrib/fileutl.cc
@@ -42,6 +42,11 @@
 #include <errno.h>
 #include <set>
 #include <algorithm>
+
+#include <config.h>
+#ifdef WORDS_BIGENDIAN
+#include <inttypes.h>
+#endif
                                                                        /*}}}*/
 
 using namespace std;
@@ -62,6 +67,15 @@ bool RunScripts(const char *Cnf)
    // This is the child
    if (Child == 0)
    {
+      if (_config->FindDir("DPkg::Chroot-Directory","/") != "/") 
+      {
+         std::cerr << "Chrooting into " 
+                   << _config->FindDir("DPkg::Chroot-Directory") 
+                   << std::endl;
+         if (chroot(_config->FindDir("DPkg::Chroot-Directory","/").c_str()) != 0)
+            _exit(100);
+      }
+
       if (chdir("/tmp/") != 0)
         _exit(100);
         
@@ -191,7 +205,7 @@ int GetLock(string File,bool Errors)
                                                                        /*}}}*/
 // FileExists - Check if a file exists                                 /*{{{*/
 // ---------------------------------------------------------------------
-/* */
+/* Beware: Directories are also files! */
 bool FileExists(string File)
 {
    struct stat Buf;
@@ -200,6 +214,17 @@ bool FileExists(string File)
    return true;
 }
                                                                        /*}}}*/
+// RealFileExists - Check if a file exists and if it is really a file  /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool RealFileExists(string File)
+{
+   struct stat Buf;
+   if (stat(File.c_str(),&Buf) != 0)
+      return false;
+   return ((Buf.st_mode & S_IFREG) != 0);
+}
+                                                                       /*}}}*/
 // DirectoryExists - Check if a directory exists and is really one     /*{{{*/
 // ---------------------------------------------------------------------
 /* */
@@ -304,6 +329,13 @@ std::vector<string> GetListOfFilesInDir(string const &Dir, std::vector<string> c
    }
 
    std::vector<string> List;
+
+   if (DirectoryExists(Dir.c_str()) == false)
+   {
+      _error->Error(_("List of files can't be created as '%s' is not a directory"), Dir.c_str());
+      return List;
+   }
+
    Configuration::MatchAgainstConfig SilentIgnore("Dir::Ignore-Files-Silently");
    DIR *D = opendir(Dir.c_str());
    if (D == 0) 
@@ -318,6 +350,20 @@ std::vector<string> GetListOfFilesInDir(string const &Dir, std::vector<string> c
       if (Ent->d_name[0] == '.')
         continue;
 
+      // Make sure it is a file and not something else
+      string const File = flCombine(Dir,Ent->d_name);
+#ifdef _DIRENT_HAVE_D_TYPE
+      if (Ent->d_type != DT_REG)
+#endif
+      {
+        if (RealFileExists(File.c_str()) == false)
+        {
+           if (SilentIgnore.Match(Ent->d_name) == false)
+              _error->Notice(_("Ignoring '%s' in directory '%s' as it is not a regular file"), Ent->d_name, Dir.c_str());
+           continue;
+        }
+      }
+
       // check for accepted extension:
       // no extension given -> periods are bad as hell!
       // extensions given -> "" extension allows no extension
@@ -331,7 +377,7 @@ std::vector<string> GetListOfFilesInDir(string const &Dir, std::vector<string> c
               if (Debug == true)
                  std::clog << "Bad file: " << Ent->d_name << " → no extension" << std::endl;
               if (SilentIgnore.Match(Ent->d_name) == false)
-                 _error->Notice("Ignoring file '%s' in directory '%s' as it has no filename extension", Ent->d_name, Dir.c_str());
+                 _error->Notice(_("Ignoring file '%s' in directory '%s' as it has no filename extension"), Ent->d_name, Dir.c_str());
               continue;
            }
         }
@@ -340,7 +386,7 @@ std::vector<string> GetListOfFilesInDir(string const &Dir, std::vector<string> c
            if (Debug == true)
               std::clog << "Bad file: " << Ent->d_name << " → bad extension »" << flExtension(Ent->d_name) << "«" << std::endl;
            if (SilentIgnore.Match(Ent->d_name) == false)
-              _error->Notice("Ignoring file '%s' in directory '%s' as it has an invalid filename extension", Ent->d_name, Dir.c_str());
+              _error->Notice(_("Ignoring file '%s' in directory '%s' as it has an invalid filename extension"), Ent->d_name, Dir.c_str());
            continue;
         }
       }
@@ -373,16 +419,6 @@ std::vector<string> GetListOfFilesInDir(string const &Dir, std::vector<string> c
         continue;
       }
 
-      // Make sure it is a file and not something else
-      string const File = flCombine(Dir,Ent->d_name);
-      struct stat St;
-      if (stat(File.c_str(),&St) != 0 || S_ISREG(St.st_mode) == 0)
-      {
-        if (Debug == true)
-           std::clog << "Bad file: " << Ent->d_name << " → stat says not a good file" << std::endl;
-        continue;
-      }
-
       if (Debug == true)
         std::clog << "Accept file: " << Ent->d_name << " in " << Dir << std::endl;
       List.push_back(File);
@@ -410,6 +446,17 @@ string SafeGetCWD()
    return S;
 }
                                                                        /*}}}*/
+// GetModificationTime - Get the mtime of the given file or -1 on error /*{{{*/
+// ---------------------------------------------------------------------
+/* We return / on failure. */
+time_t GetModificationTime(string const &Path)
+{
+   struct stat St;
+   if (stat(Path.c_str(), &St) < 0)
+      return -1;
+   return  St.st_mtime;
+}
+                                                                       /*}}}*/
 // flNotDir - Strip the directory from the filename                    /*{{{*/
 // ---------------------------------------------------------------------
 /* */
@@ -940,9 +987,16 @@ unsigned long FileFd::Size()
        off_t orig_pos = lseek(iFd, 0, SEEK_CUR);
        if (lseek(iFd, -4, SEEK_END) < 0)
           return _error->Errno("lseek","Unable to seek to end of gzipped file");
+       size = 0L;
        if (read(iFd, &size, 4) != 4)
           return _error->Errno("read","Unable to read original size of gzipped file");
-       size &= 0xFFFFFFFF;
+
+#ifdef WORDS_BIGENDIAN
+       uint32_t tmp_size = size;
+       uint8_t const * const p = (uint8_t const * const) &tmp_size;
+       tmp_size = (p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0];
+       size = tmp_size;
+#endif
 
        if (lseek(iFd, orig_pos, SEEK_SET) < 0)
           return _error->Errno("lseek","Unable to seek in gzipped file");