X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/d13c2d3f7b10e558301a05948e91ac4a60160793..8d3489abd90a64715b92976a7c60b42a386a4c5c:/apt-pkg/contrib/fileutl.cc diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc index 0d2d3f356..2a3b8a87d 100644 --- a/apt-pkg/contrib/fileutl.cc +++ b/apt-pkg/contrib/fileutl.cc @@ -19,6 +19,7 @@ /*}}}*/ // Include Files /*{{{*/ #include +#include #include #include #include @@ -27,6 +28,7 @@ #include #include +#include #include #include @@ -198,15 +200,61 @@ bool FileExists(string File) return true; } /*}}}*/ +// DirectoryExists - Check if a directory exists and is really one /*{{{*/ +// --------------------------------------------------------------------- +/* */ +bool DirectoryExists(string const &Path) +{ + struct stat Buf; + if (stat(Path.c_str(),&Buf) != 0) + return false; + return ((Buf.st_mode & S_IFDIR) != 0); +} + /*}}}*/ +// CreateDirectory - poor man's mkdir -p guarded by a parent directory /*{{{*/ +// --------------------------------------------------------------------- +/* This method will create all directories needed for path in good old + mkdir -p style but refuses to do this if Parent is not a prefix of + this Path. Example: /var/cache/ and /var/cache/apt/archives are given, + so it will create apt/archives if /var/cache exists - on the other + hand if the parent is /var/lib the creation will fail as this path + is not a parent of the path to be generated. */ +bool CreateDirectory(string const &Parent, string const &Path) +{ + if (Parent.empty() == true || Path.empty() == true) + return false; + + if (DirectoryExists(Path) == true) + return true; + + if (DirectoryExists(Parent) == false) + return false; + + // we are not going to create directories "into the blue" + if (Path.find(Parent, 0) != 0) + return false; + + vector const dirs = VectorizeString(Path.substr(Parent.size()), '/'); + string progress = Parent; + for (vector::const_iterator d = dirs.begin(); d != dirs.end(); ++d) + { + if (d->empty() == true) + continue; + + progress.append("/").append(*d); + if (DirectoryExists(progress) == true) + continue; + + if (mkdir(progress.c_str(), 0755) != 0) + return false; + } + return true; +} + /*}}}*/ // GetListOfFilesInDir - returns a vector of files in the given dir /*{{{*/ // --------------------------------------------------------------------- /* If an extension is given only files with this extension are included in the returned vector, otherwise every "normal" file is included. */ -std::vector GetListOfFilesInDir(string const &Dir, string const &Ext, - bool const &SortList) -{ - return GetListOfFilesInDir(Dir, Ext, SortList, false); -} std::vector GetListOfFilesInDir(string const &Dir, string const &Ext, bool const &SortList, bool const &AllowNoExt) { @@ -235,6 +283,7 @@ std::vector GetListOfFilesInDir(string const &Dir, std::vector c } std::vector List; + Configuration::MatchAgainstConfig SilentIgnore("Dir::Ignore-Files-Silently"); DIR *D = opendir(Dir.c_str()); if (D == 0) { @@ -260,6 +309,7 @@ std::vector GetListOfFilesInDir(string const &Dir, std::vector c { if (Debug == true) std::clog << "Bad file: " << Ent->d_name << " → no extension" << std::endl; + _error->Notice("Ignoring file '%s' in directory '%s' as it has no filename extension", Ent->d_name, Dir.c_str()); continue; } } @@ -267,6 +317,8 @@ std::vector GetListOfFilesInDir(string const &Dir, std::vector 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()); continue; } } @@ -619,10 +671,11 @@ bool FileFd::Open(string FileName,OpenMode Mode, unsigned long Perms) case WriteEmpty: { - struct stat Buf; - if (lstat(FileName.c_str(),&Buf) == 0 && S_ISLNK(Buf.st_mode)) - unlink(FileName.c_str()); - iFd = open(FileName.c_str(),O_RDWR | O_CREAT | O_TRUNC,Perms); + Flags |= Replace; + char *name = strdup((FileName + ".XXXXXX").c_str()); + TemporaryFileName = string(mktemp(name)); + iFd = open(TemporaryFileName.c_str(),O_RDWR | O_CREAT | O_EXCL,Perms); + free(name); break; } @@ -647,6 +700,24 @@ bool FileFd::Open(string FileName,OpenMode Mode, unsigned long Perms) SetCloseExec(iFd,true); return true; } + +bool FileFd::OpenDescriptor(int Fd, OpenMode Mode, bool AutoClose) +{ + Close(); + Flags = (AutoClose) ? FileFd::AutoClose : 0; + iFd = Fd; + if (Mode == ReadOnlyGzip) { + gz = gzdopen (iFd, "r"); + if (gz == NULL) { + if (AutoClose) + close (iFd); + return _error->Errno("gzdopen",_("Could not open file descriptor %d"), + Fd); + } + } + this->FileName = ""; + return true; +} /*}}}*/ // FileFd::~File - Closes the file /*{{{*/ // --------------------------------------------------------------------- @@ -829,21 +900,31 @@ bool FileFd::Close() if ((Flags & AutoClose) == AutoClose) { if (gz != NULL) { - int e = gzclose(gz); + int const e = gzclose(gz); // gzdopen() on empty files always fails with "buffer error" here, ignore that if (e != 0 && e != Z_BUF_ERROR) - Res &= _error->Errno("close",_("Problem closing the gzip file")); + Res &= _error->Errno("close",_("Problem closing the gzip file %s"), FileName.c_str()); } else if (iFd > 0 && close(iFd) != 0) - Res &= _error->Errno("close",_("Problem closing the file")); + Res &= _error->Errno("close",_("Problem closing the file %s"), FileName.c_str()); + } + + if ((Flags & Replace) == Replace && iFd >= 0) { + if (rename(TemporaryFileName.c_str(), FileName.c_str()) != 0) + Res &= _error->Errno("rename",_("Problem renaming the file %s to %s"), TemporaryFileName.c_str(), FileName.c_str()); + + FileName = TemporaryFileName; // for the unlink() below. } + iFd = -1; gz = NULL; - + if ((Flags & Fail) == Fail && (Flags & DelOnFail) == DelOnFail && FileName.empty() == false) if (unlink(FileName.c_str()) != 0) - Res &= _error->WarningE("unlnk",_("Problem unlinking the file")); + Res &= _error->WarningE("unlnk",_("Problem unlinking the file %s"), FileName.c_str()); + + return Res; } /*}}}*/