X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/0205540433440a9ff4ad4ea4cce44c700a4b401c..74b220028595342028e3309002e4ec359af328f9:/apt-pkg/contrib/fileutl.cc diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc index 94d994e8b..95058cbde 100644 --- a/apt-pkg/contrib/fileutl.cc +++ b/apt-pkg/contrib/fileutl.cc @@ -18,14 +18,14 @@ ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ +#include + #include #include #include #include #include -#include - #include #include #include @@ -42,6 +42,12 @@ #include #include #include + +#ifdef WORDS_BIGENDIAN +#include +#endif + +#include /*}}}*/ using namespace std; @@ -62,6 +68,15 @@ 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); @@ -118,10 +133,10 @@ bool CopyFile(FileFd &From,FileFd &To) // Buffered copy between fds SPtrArray Buf = new unsigned char[64000]; - unsigned long Size = From.Size(); + unsigned long long Size = From.Size(); while (Size != 0) { - unsigned long ToRead = Size; + unsigned long long ToRead = Size; if (Size > 64000) ToRead = 64000; @@ -191,7 +206,7 @@ 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 +215,17 @@ 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 /*{{{*/ // --------------------------------------------------------------------- /* */ @@ -251,11 +277,11 @@ bool CreateDirectory(string const &Parent, string const &Path) return true; } /*}}}*/ -// CheckDirectory - ensure that the given directory exists /*{{{*/ +// CreateAPTDirectoryIfNeeded - ensure that the given directory exists /*{{{*/ // --------------------------------------------------------------------- /* a small wrapper around CreateDirectory to check if it exists and to remove the trailing "/apt/" from the parent directory if needed */ -bool CheckDirectory(string const &Parent, string const &Path) +bool CreateAPTDirectoryIfNeeded(string const &Parent, string const &Path) { if (DirectoryExists(Path) == true) return true; @@ -304,6 +330,13 @@ std::vector GetListOfFilesInDir(string const &Dir, std::vector c } std::vector 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 +351,20 @@ std::vector GetListOfFilesInDir(string const &Dir, std::vector 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 +378,7 @@ std::vector GetListOfFilesInDir(string const &Dir, std::vector 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 +387,7 @@ 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()); + _error->Notice(_("Ignoring file '%s' in directory '%s' as it has an invalid filename extension"), Ent->d_name, Dir.c_str()); continue; } } @@ -373,16 +420,6 @@ std::vector GetListOfFilesInDir(string const &Dir, std::vector 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 +447,17 @@ 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 /*{{{*/ // --------------------------------------------------------------------- /* */ @@ -763,7 +811,7 @@ FileFd::~FileFd() // --------------------------------------------------------------------- /* We are carefull to handle interruption by a signal while reading gracefully. */ -bool FileFd::Read(void *To,unsigned long Size,unsigned long *Actual) +bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual) { int Res; errno = 0; @@ -802,13 +850,13 @@ bool FileFd::Read(void *To,unsigned long Size,unsigned long *Actual) } Flags |= Fail; - return _error->Error(_("read, still have %lu to read but none left"),Size); + return _error->Error(_("read, still have %llu to read but none left"), Size); } /*}}}*/ // FileFd::Write - Write to the file /*{{{*/ // --------------------------------------------------------------------- /* */ -bool FileFd::Write(const void *From,unsigned long Size) +bool FileFd::Write(const void *From,unsigned long long Size) { int Res; errno = 0; @@ -835,13 +883,13 @@ bool FileFd::Write(const void *From,unsigned long Size) return true; Flags |= Fail; - return _error->Error(_("write, still have %lu to write but couldn't"),Size); + return _error->Error(_("write, still have %llu to write but couldn't"), Size); } /*}}}*/ // FileFd::Seek - Seek in the file /*{{{*/ // --------------------------------------------------------------------- /* */ -bool FileFd::Seek(unsigned long To) +bool FileFd::Seek(unsigned long long To) { int res; if (gz) @@ -851,7 +899,7 @@ bool FileFd::Seek(unsigned long To) if (res != (signed)To) { Flags |= Fail; - return _error->Error("Unable to seek to %lu",To); + return _error->Error("Unable to seek to %llu", To); } return true; @@ -860,7 +908,7 @@ bool FileFd::Seek(unsigned long To) // FileFd::Skip - Seek in the file /*{{{*/ // --------------------------------------------------------------------- /* */ -bool FileFd::Skip(unsigned long Over) +bool FileFd::Skip(unsigned long long Over) { int res; if (gz) @@ -870,7 +918,7 @@ bool FileFd::Skip(unsigned long Over) if (res < 0) { Flags |= Fail; - return _error->Error("Unable to seek ahead %lu",Over); + return _error->Error("Unable to seek ahead %llu",Over); } return true; @@ -879,7 +927,7 @@ bool FileFd::Skip(unsigned long Over) // FileFd::Truncate - Truncate the file /*{{{*/ // --------------------------------------------------------------------- /* */ -bool FileFd::Truncate(unsigned long To) +bool FileFd::Truncate(unsigned long long To) { if (gz) { @@ -889,7 +937,7 @@ bool FileFd::Truncate(unsigned long To) if (ftruncate(iFd,To) != 0) { Flags |= Fail; - return _error->Error("Unable to truncate to %lu",To); + return _error->Error("Unable to truncate to %llu",To); } return true; @@ -898,7 +946,7 @@ bool FileFd::Truncate(unsigned long To) // FileFd::Tell - Current seek position /*{{{*/ // --------------------------------------------------------------------- /* */ -unsigned long FileFd::Tell() +unsigned long long FileFd::Tell() { off_t Res; if (gz) @@ -910,18 +958,56 @@ unsigned long FileFd::Tell() return Res; } /*}}}*/ -// FileFd::Size - Return the size of the file /*{{{*/ +// FileFd::FileSize - Return the size of the file /*{{{*/ // --------------------------------------------------------------------- /* */ -unsigned long FileFd::Size() +unsigned long long FileFd::FileSize() { - //TODO: For gz, do we need the actual file size here or the uncompressed length? struct stat Buf; + if (fstat(iFd,&Buf) != 0) return _error->Errno("fstat","Unable to determine the file size"); return Buf.st_size; } /*}}}*/ +// FileFd::Size - Return the size of the content in the file /*{{{*/ +// --------------------------------------------------------------------- +/* */ +unsigned long long FileFd::Size() +{ + unsigned long long size = FileSize(); + + // only check gzsize if we are actually a gzip file, just checking for + // "gz" is not sufficient as uncompressed files will be opened with + // gzopen in "direct" mode as well + if (gz && !gzdirect(gz) && size > 0) + { + /* unfortunately zlib.h doesn't provide a gzsize(), so we have to do + * this ourselves; the original (uncompressed) file size is the last 32 + * bits of the file */ + // FIXME: Size for gz-files is limited by 32bit… no largefile support + 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"); + +#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"); + return size; + } + + return size; +} + /*}}}*/ // FileFd::Close - Close the file if the close flag is set /*{{{*/ // --------------------------------------------------------------------- /* */