X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/468720c59fcf48b20332cdb7b601b2b0d7cbbfbb..fe5804fc5010dd8f2e9406187bfc1f6afeb29c5a:/apt-pkg/contrib/fileutl.cc diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc index 1cb3fab1e..960616f33 100644 --- a/apt-pkg/contrib/fileutl.cc +++ b/apt-pkg/contrib/fileutl.cc @@ -44,6 +44,13 @@ #include #include +#ifdef HAVE_ZLIB + #include +#endif +#ifdef HAVE_BZ2 + #include +#endif + #ifdef WORDS_BIGENDIAN #include #endif @@ -53,6 +60,54 @@ using namespace std; +class FileFdPrivate { + public: +#ifdef HAVE_ZLIB + gzFile gz; +#else + void* gz; +#endif +#ifdef HAVE_BZ2 + BZFILE* bz2; +#else + void* bz2; +#endif + int compressed_fd; + pid_t compressor_pid; + bool pipe; + APT::Configuration::Compressor compressor; + unsigned int openmode; + unsigned long long seekpos; + FileFdPrivate() : gz(NULL), bz2(NULL), + compressed_fd(-1), compressor_pid(-1), pipe(false), + openmode(0), seekpos(0) {}; + bool CloseDown(std::string const &FileName) + { + bool Res = true; +#ifdef HAVE_ZLIB + if (gz != NULL) { + int const e = gzclose(gz); + gz = NULL; + // gzdclose() 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 %s"), FileName.c_str()); + } +#endif +#ifdef HAVE_BZ2 + if (bz2 != NULL) { + BZ2_bzclose(bz2); + bz2 = NULL; + } +#endif + if (compressor_pid > 0) + ExecWait(compressor_pid, "FileFdCompressor", true); + compressor_pid = -1; + + return Res; + } + ~FileFdPrivate() { CloseDown(""); } +}; + // RunScripts - Run a set of scripts from a configuration subtree /*{{{*/ // --------------------------------------------------------------------- /* */ @@ -360,6 +415,13 @@ std::vector GetListOfFilesInDir(string const &Dir, std::vector c { if (RealFileExists(File.c_str()) == false) { + // do not show ignoration warnings for directories + if ( +#ifdef _DIRENT_HAVE_D_TYPE + Ent->d_type == DT_DIR || +#endif + DirectoryExists(File.c_str()) == true) + continue; 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; @@ -427,6 +489,80 @@ std::vector GetListOfFilesInDir(string const &Dir, std::vector c } closedir(D); + if (SortList == true) + std::sort(List.begin(),List.end()); + return List; +} +std::vector GetListOfFilesInDir(string const &Dir, bool SortList) +{ + bool const Debug = _config->FindB("Debug::GetListOfFilesInDir", false); + if (Debug == true) + std::clog << "Accept in " << Dir << " all regular files" << std::endl; + + 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; + } + + DIR *D = opendir(Dir.c_str()); + if (D == 0) + { + _error->Errno("opendir",_("Unable to read %s"),Dir.c_str()); + return List; + } + + for (struct dirent *Ent = readdir(D); Ent != 0; Ent = readdir(D)) + { + // skip "hidden" files + 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 (Debug == true) + std::clog << "Bad file: " << Ent->d_name << " → it is not a real file" << std::endl; + continue; + } + } + + // Skip bad filenames ala run-parts + const char *C = Ent->d_name; + for (; *C != 0; ++C) + if (isalpha(*C) == 0 && isdigit(*C) == 0 + && *C != '_' && *C != '-' && *C != '.') + break; + + // we don't reach the end of the name -> bad character included + if (*C != 0) + { + if (Debug == true) + std::clog << "Bad file: " << Ent->d_name << " → bad character »" << *C << "« in filename" << std::endl; + continue; + } + + // skip filenames which end with a period. These are never valid + if (*(C - 1) == '.') + { + if (Debug == true) + std::clog << "Bad file: " << Ent->d_name << " → Period as last character" << std::endl; + continue; + } + + if (Debug == true) + std::clog << "Accept file: " << Ent->d_name << " in " << Dir << std::endl; + List.push_back(File); + } + closedir(D); + if (SortList == true) std::sort(List.begin(),List.end()); return List; @@ -716,97 +852,110 @@ bool ExecWait(pid_t Pid,const char *Name,bool Reap) } /*}}}*/ +// StartsWithGPGClearTextSignature - Check if a file is Pgp/GPG clearsigned /*{{{*/ +// --------------------------------------------------------------------- +/* */ +bool StartsWithGPGClearTextSignature(string const &FileName) +{ + static const char* SIGMSG = "-----BEGIN PGP SIGNED MESSAGE-----\n"; + char buffer[strlen(SIGMSG)+1]; + FILE* gpg = fopen(FileName.c_str(), "r"); + if (gpg == NULL) + return false; + + char const * const test = fgets(buffer, sizeof(buffer), gpg); + fclose(gpg); + if (test == NULL || strcmp(buffer, SIGMSG) != 0) + return false; + + return true; +} + + // FileFd::Open - Open a file /*{{{*/ // --------------------------------------------------------------------- /* The most commonly used open mode combinations are given with Mode */ -bool FileFd::Open(string FileName,OpenMode Mode,CompressMode Compress, unsigned long Perms) +bool FileFd::Open(string FileName,unsigned int const Mode,CompressMode Compress, unsigned long const Perms) { if (Mode == ReadOnlyGzip) return Open(FileName, ReadOnly, Gzip, Perms); - Close(); - Flags = AutoClose; if (Compress == Auto && (Mode & WriteOnly) == WriteOnly) return _error->Error("Autodetection on %s only works in ReadOnly openmode!", FileName.c_str()); - if ((Mode & WriteOnly) != WriteOnly && (Mode & (Atomic | Create | Empty | Exclusive)) != 0) - return _error->Error("ReadOnly mode for %s doesn't accept additional flags!", FileName.c_str()); - - int fileflags = 0; -#define if_FLAGGED_SET(FLAG, MODE) if ((Mode & FLAG) == FLAG) fileflags |= MODE - if_FLAGGED_SET(ReadWrite, O_RDWR); - else if_FLAGGED_SET(ReadOnly, O_RDONLY); - else if_FLAGGED_SET(WriteOnly, O_WRONLY); - else return _error->Error("No openmode provided in FileFd::Open for %s", FileName.c_str()); - if_FLAGGED_SET(Create, O_CREAT); - if_FLAGGED_SET(Exclusive, O_EXCL); - else if_FLAGGED_SET(Atomic, O_EXCL); - if_FLAGGED_SET(Empty, O_TRUNC); -#undef if_FLAGGED_SET - - // FIXME: Denote inbuilt compressors somehow - as we don't need to have the binaries for them std::vector const compressors = APT::Configuration::getCompressors(); std::vector::const_iterator compressor = compressors.begin(); if (Compress == Auto) { - Compress = None; for (; compressor != compressors.end(); ++compressor) { std::string file = std::string(FileName).append(compressor->Extension); if (FileExists(file) == false) continue; FileName = file; - if (compressor->Binary == ".") - Compress = None; - else - Compress = Extension; break; } } else if (Compress == Extension) { - Compress = None; - std::string ext = flExtension(FileName); - if (ext != FileName) + std::string::size_type const found = FileName.find_last_of('.'); + std::string ext; + if (found != std::string::npos) { - ext = "." + ext; - for (; compressor != compressors.end(); ++compressor) - if (ext == compressor->Extension) - break; + ext = FileName.substr(found); + if (ext == ".new" || ext == ".bak") + { + std::string::size_type const found2 = FileName.find_last_of('.', found - 1); + if (found2 != std::string::npos) + ext = FileName.substr(found2, found - found2); + else + ext.clear(); + } } + for (; compressor != compressors.end(); ++compressor) + if (ext == compressor->Extension) + break; + // no matching extension - assume uncompressed (imagine files like 'example.org_Packages') + if (compressor == compressors.end()) + for (compressor = compressors.begin(); compressor != compressors.end(); ++compressor) + if (compressor->Name == ".") + break; } - else if (Compress != None) + else { std::string name; switch (Compress) { + case None: name = "."; break; case Gzip: name = "gzip"; break; case Bzip2: name = "bzip2"; break; case Lzma: name = "lzma"; break; case Xz: name = "xz"; break; - default: return _error->Error("Can't find a match for specified compressor mode for file %s", FileName.c_str()); + case Auto: + case Extension: + // Unreachable + return _error->Error("Opening File %s in None, Auto or Extension should be already handled?!?", FileName.c_str()); } for (; compressor != compressors.end(); ++compressor) if (compressor->Name == name) break; - if (compressor == compressors.end() && name != "gzip") + if (compressor == compressors.end()) return _error->Error("Can't find a configured compressor %s for file %s", name.c_str(), FileName.c_str()); } - // if we have them, use inbuilt compressors instead of forking - if (compressor != compressors.end()) - { - if (compressor->Name == "gzip") - { - Compress = Gzip; - compressor = compressors.end(); - } - else if (compressor->Name == "." || Compress == None) - { - Compress = None; - compressor = compressors.end(); - } - } + if (compressor == compressors.end()) + return _error->Error("Can't find a match for specified compressor mode for file %s", FileName.c_str()); + return Open(FileName, Mode, *compressor, Perms); +} +bool FileFd::Open(string FileName,unsigned int const Mode,APT::Configuration::Compressor const &compressor, unsigned long const Perms) +{ + Close(); + Flags = AutoClose; + + if ((Mode & WriteOnly) != WriteOnly && (Mode & (Atomic | Create | Empty | Exclusive)) != 0) + return _error->Error("ReadOnly mode for %s doesn't accept additional flags!", FileName.c_str()); + if ((Mode & ReadWrite) == 0) + return _error->Error("No openmode provided in FileFd::Open for %s", FileName.c_str()); if ((Mode & Atomic) == Atomic) { @@ -827,34 +976,34 @@ bool FileFd::Open(string FileName,OpenMode Mode,CompressMode Compress, unsigned unlink(FileName.c_str()); } - if (compressor != compressors.end()) - { - if ((Mode & ReadWrite) == ReadWrite) - _error->Error("External compressors like %s do not support readwrite mode for file %s", compressor->Name.c_str(), FileName.c_str()); + int fileflags = 0; + #define if_FLAGGED_SET(FLAG, MODE) if ((Mode & FLAG) == FLAG) fileflags |= MODE + if_FLAGGED_SET(ReadWrite, O_RDWR); + else if_FLAGGED_SET(ReadOnly, O_RDONLY); + else if_FLAGGED_SET(WriteOnly, O_WRONLY); - _error->Error("Forking external compressor %s is not implemented for %s", compressor->Name.c_str(), FileName.c_str()); - } + if_FLAGGED_SET(Create, O_CREAT); + if_FLAGGED_SET(Empty, O_TRUNC); + if_FLAGGED_SET(Exclusive, O_EXCL); + else if_FLAGGED_SET(Atomic, O_EXCL); + #undef if_FLAGGED_SET + + if (TemporaryFileName.empty() == false) + iFd = open(TemporaryFileName.c_str(), fileflags, Perms); else - { - if (TemporaryFileName.empty() == false) - iFd = open(TemporaryFileName.c_str(), fileflags, Perms); - else - iFd = open(FileName.c_str(), fileflags, Perms); + iFd = open(FileName.c_str(), fileflags, Perms); + this->FileName = FileName; + if (iFd == -1 || OpenInternDescriptor(Mode, compressor) == false) + { if (iFd != -1) { - if (OpenInternDescriptor(Mode, Compress) == false) - { - close (iFd); - iFd = -1; - } + close (iFd); + iFd = -1; } + return _error->Errno("open",_("Could not open file %s"), FileName.c_str()); } - if (iFd == -1) - return _error->Errno("open",_("Could not open file %s"),FileName.c_str()); - - this->FileName = FileName; SetCloseExec(iFd,true); return true; } @@ -862,37 +1011,212 @@ bool FileFd::Open(string FileName,OpenMode Mode,CompressMode Compress, unsigned // FileFd::OpenDescriptor - Open a filedescriptor /*{{{*/ // --------------------------------------------------------------------- /* */ -bool FileFd::OpenDescriptor(int Fd, OpenMode Mode, CompressMode Compress, bool AutoClose) +bool FileFd::OpenDescriptor(int Fd, unsigned int const Mode, CompressMode Compress, bool AutoClose) +{ + std::vector const compressors = APT::Configuration::getCompressors(); + std::vector::const_iterator compressor = compressors.begin(); + std::string name; + + // compat with the old API + if (Mode == ReadOnlyGzip && Compress == None) + Compress = Gzip; + + switch (Compress) + { + case None: name = "."; break; + case Gzip: name = "gzip"; break; + case Bzip2: name = "bzip2"; break; + case Lzma: name = "lzma"; break; + case Xz: name = "xz"; break; + case Auto: + case Extension: + return _error->Error("Opening Fd %d in Auto or Extension compression mode is not supported", Fd); + } + for (; compressor != compressors.end(); ++compressor) + if (compressor->Name == name) + break; + if (compressor == compressors.end()) + return _error->Error("Can't find a configured compressor %s for file %s", name.c_str(), FileName.c_str()); + + return OpenDescriptor(Fd, Mode, *compressor, AutoClose); +} +bool FileFd::OpenDescriptor(int Fd, unsigned int const Mode, APT::Configuration::Compressor const &compressor, bool AutoClose) { Close(); Flags = (AutoClose) ? FileFd::AutoClose : 0; - iFd = Fd; - if (OpenInternDescriptor(Mode, Compress) == false) + if (AutoClose == false && ( +#ifdef HAVE_ZLIB + compressor.Name == "gzip" || +#endif +#ifdef HAVE_BZ2 + compressor.Name == "bzip2" || +#endif + false)) + { + // Need to duplicate fd here or gzclose for cleanup will close the fd as well + iFd = dup(Fd); + } + else + iFd = Fd; + this->FileName = ""; + if (OpenInternDescriptor(Mode, compressor) == false) { if (AutoClose) close (iFd); return _error->Errno("gzdopen",_("Could not open file descriptor %d"), Fd); } - this->FileName = ""; return true; } -bool FileFd::OpenInternDescriptor(OpenMode Mode, CompressMode Compress) +bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::Compressor const &compressor) { - if (Compress == None) + if (compressor.Name == "." || compressor.Binary.empty() == true) + return true; + + if (d == NULL) + { + d = new FileFdPrivate(); + d->openmode = Mode; + d->compressor = compressor; + } + +#ifdef HAVE_ZLIB + if (compressor.Name == "gzip") + { + if (d->gz != NULL) + { + gzclose(d->gz); + d->gz = NULL; + } + if ((Mode & ReadWrite) == ReadWrite) + d->gz = gzdopen(iFd, "r+"); + else if ((Mode & WriteOnly) == WriteOnly) + d->gz = gzdopen(iFd, "w"); + else + d->gz = gzdopen(iFd, "r"); + if (d->gz == NULL) + return false; + Flags |= Compressed; return true; - else if (Compress == Gzip) + } +#endif +#ifdef HAVE_BZ2 + if (compressor.Name == "bzip2") { + if (d->bz2 != NULL) + { + BZ2_bzclose(d->bz2); + d->bz2 = NULL; + } if ((Mode & ReadWrite) == ReadWrite) - gz = gzdopen(iFd, "r+"); + d->bz2 = BZ2_bzdopen(iFd, "r+"); else if ((Mode & WriteOnly) == WriteOnly) - gz = gzdopen(iFd, "w"); + d->bz2 = BZ2_bzdopen(iFd, "w"); else - gz = gzdopen (iFd, "r"); - if (gz == NULL) + d->bz2 = BZ2_bzdopen(iFd, "r"); + if (d->bz2 == NULL) return false; + Flags |= Compressed; + return true; } +#endif + + // collect zombies here in case we reopen + if (d->compressor_pid > 0) + ExecWait(d->compressor_pid, "FileFdCompressor", true); + + if ((Mode & ReadWrite) == ReadWrite) + { + Flags |= Fail; + return _error->Error("ReadWrite mode is not supported for file %s", FileName.c_str()); + } + + bool const Comp = (Mode & WriteOnly) == WriteOnly; + if (Comp == false) + { + // Handle 'decompression' of empty files + struct stat Buf; + fstat(iFd, &Buf); + if (Buf.st_size == 0 && S_ISFIFO(Buf.st_mode) == false) + return true; + + // We don't need the file open - instead let the compressor open it + // as he properly knows better how to efficiently read from 'his' file + if (FileName.empty() == false) + { + close(iFd); + iFd = -1; + } + } + + // Create a data pipe + int Pipe[2] = {-1,-1}; + if (pipe(Pipe) != 0) + { + Flags |= Fail; + return _error->Errno("pipe",_("Failed to create subprocess IPC")); + } + for (int J = 0; J != 2; J++) + SetCloseExec(Pipe[J],true); + + d->compressed_fd = iFd; + d->pipe = true; + + if (Comp == true) + iFd = Pipe[1]; else - return false; + iFd = Pipe[0]; + + // The child.. + d->compressor_pid = ExecFork(); + if (d->compressor_pid == 0) + { + if (Comp == true) + { + dup2(d->compressed_fd,STDOUT_FILENO); + dup2(Pipe[0],STDIN_FILENO); + } + else + { + if (FileName.empty() == true) + dup2(d->compressed_fd,STDIN_FILENO); + dup2(Pipe[1],STDOUT_FILENO); + } + int const nullfd = open("/dev/null", O_WRONLY); + if (nullfd != -1) + { + dup2(nullfd,STDERR_FILENO); + close(nullfd); + } + + SetCloseExec(STDOUT_FILENO,false); + SetCloseExec(STDIN_FILENO,false); + + std::vector Args; + Args.push_back(compressor.Binary.c_str()); + std::vector const * const addArgs = + (Comp == true) ? &(compressor.CompressArgs) : &(compressor.UncompressArgs); + for (std::vector::const_iterator a = addArgs->begin(); + a != addArgs->end(); ++a) + Args.push_back(a->c_str()); + if (Comp == false && FileName.empty() == false) + { + Args.push_back("--stdout"); + if (TemporaryFileName.empty() == false) + Args.push_back(TemporaryFileName.c_str()); + else + Args.push_back(FileName.c_str()); + } + Args.push_back(NULL); + + execvp(Args[0],(char **)&Args[0]); + cerr << _("Failed to exec compressor ") << Args[0] << endl; + _exit(100); + } + if (Comp == true) + close(Pipe[0]); + else + close(Pipe[1]); + return true; } /*}}}*/ @@ -903,6 +1227,12 @@ bool FileFd::OpenInternDescriptor(OpenMode Mode, CompressMode Compress) FileFd::~FileFd() { Close(); + if (d != NULL) + { + d->CloseDown(FileName); + delete d; + d = NULL; + } } /*}}}*/ // FileFd::Read - Read a bit of the file /*{{{*/ @@ -915,23 +1245,51 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual) errno = 0; if (Actual != 0) *Actual = 0; - + *((char *)To) = '\0'; do { - if (gz != NULL) - Res = gzread(gz,To,Size); +#ifdef HAVE_ZLIB + if (d != NULL && d->gz != NULL) + Res = gzread(d->gz,To,Size); else +#endif +#ifdef HAVE_BZ2 + if (d != NULL && d->bz2 != NULL) + Res = BZ2_bzread(d->bz2,To,Size); + else +#endif Res = read(iFd,To,Size); - if (Res < 0 && errno == EINTR) - continue; + if (Res < 0) { + if (errno == EINTR) + continue; Flags |= Fail; +#ifdef HAVE_ZLIB + if (d != NULL && d->gz != NULL) + { + int err; + char const * const errmsg = gzerror(d->gz, &err); + if (err != Z_ERRNO) + return _error->Error("gzread: %s (%d: %s)", _("Read error"), err, errmsg); + } +#endif +#ifdef HAVE_BZ2 + if (d != NULL && d->bz2 != NULL) + { + int err; + char const * const errmsg = BZ2_bzerror(d->bz2, &err); + if (err != BZ_IO_ERROR) + return _error->Error("BZ2_bzread: %s (%d: %s)", _("Read error"), err, errmsg); + } +#endif return _error->Errno("read",_("Read error")); } To = (char *)To + Res; Size -= Res; + if (d != NULL) + d->seekpos += Res; if (Actual != 0) *Actual += Res; } @@ -951,6 +1309,35 @@ bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual) return _error->Error(_("read, still have %llu to read but none left"), Size); } /*}}}*/ +// FileFd::ReadLine - Read a complete line from the file /*{{{*/ +// --------------------------------------------------------------------- +/* Beware: This method can be quiet slow for big buffers on UNcompressed + files because of the naive implementation! */ +char* FileFd::ReadLine(char *To, unsigned long long const Size) +{ + *To = '\0'; +#ifdef HAVE_ZLIB + if (d != NULL && d->gz != NULL) + return gzgets(d->gz, To, Size); +#endif + + unsigned long long read = 0; + while ((Size - 1) != read) + { + unsigned long long done = 0; + if (Read(To + read, 1, &done) == false) + return NULL; + if (done == 0) + break; + if (To[read++] == '\n') + break; + } + if (read == 0) + return NULL; + To[read] = '\0'; + return To; +} + /*}}}*/ // FileFd::Write - Write to the file /*{{{*/ // --------------------------------------------------------------------- /* */ @@ -960,20 +1347,47 @@ bool FileFd::Write(const void *From,unsigned long long Size) errno = 0; do { - if (gz != NULL) - Res = gzwrite(gz,From,Size); +#ifdef HAVE_ZLIB + if (d != NULL && d->gz != NULL) + Res = gzwrite(d->gz,From,Size); else +#endif +#ifdef HAVE_BZ2 + if (d != NULL && d->bz2 != NULL) + Res = BZ2_bzwrite(d->bz2,(void*)From,Size); + else +#endif Res = write(iFd,From,Size); if (Res < 0 && errno == EINTR) continue; if (Res < 0) { Flags |= Fail; +#ifdef HAVE_ZLIB + if (d != NULL && d->gz != NULL) + { + int err; + char const * const errmsg = gzerror(d->gz, &err); + if (err != Z_ERRNO) + return _error->Error("gzwrite: %s (%d: %s)", _("Write error"), err, errmsg); + } +#endif +#ifdef HAVE_BZ2 + if (d != NULL && d->bz2 != NULL) + { + int err; + char const * const errmsg = BZ2_bzerror(d->bz2, &err); + if (err != BZ_IO_ERROR) + return _error->Error("BZ2_bzwrite: %s (%d: %s)", _("Write error"), err, errmsg); + } +#endif return _error->Errno("write",_("Write error")); } From = (char *)From + Res; Size -= Res; + if (d != NULL) + d->seekpos += Res; } while (Res > 0 && Size > 0); @@ -982,6 +1396,28 @@ bool FileFd::Write(const void *From,unsigned long long Size) Flags |= Fail; return _error->Error(_("write, still have %llu to write but couldn't"), Size); +} +bool FileFd::Write(int Fd, const void *From, unsigned long long Size) +{ + int Res; + errno = 0; + do + { + Res = write(Fd,From,Size); + if (Res < 0 && errno == EINTR) + continue; + if (Res < 0) + return _error->Errno("write",_("Write error")); + + From = (char *)From + Res; + Size -= Res; + } + while (Res > 0 && Size > 0); + + if (Size == 0) + return true; + + return _error->Error(_("write, still have %llu to write but couldn't"), Size); } /*}}}*/ // FileFd::Seek - Seek in the file /*{{{*/ @@ -989,17 +1425,74 @@ bool FileFd::Write(const void *From,unsigned long long Size) /* */ bool FileFd::Seek(unsigned long long To) { + if (d != NULL && (d->pipe == true +#ifdef HAVE_BZ2 + || d->bz2 != NULL +#endif + )) + { + // Our poor man seeking in pipes is costly, so try to avoid it + unsigned long long seekpos = Tell(); + if (seekpos == To) + return true; + else if (seekpos < To) + return Skip(To - seekpos); + + if ((d->openmode & ReadOnly) != ReadOnly) + { + Flags |= Fail; + return _error->Error("Reopen is only implemented for read-only files!"); + } +#ifdef HAVE_BZ2 + if (d->bz2 != NULL) + BZ2_bzclose(d->bz2); +#endif + if (iFd != -1) + close(iFd); + iFd = -1; + if (TemporaryFileName.empty() == false) + iFd = open(TemporaryFileName.c_str(), O_RDONLY); + else if (FileName.empty() == false) + iFd = open(FileName.c_str(), O_RDONLY); + else + { + if (d->compressed_fd > 0) + if (lseek(d->compressed_fd, 0, SEEK_SET) != 0) + iFd = d->compressed_fd; + if (iFd < 0) + { + Flags |= Fail; + return _error->Error("Reopen is not implemented for pipes opened with FileFd::OpenDescriptor()!"); + } + } + + if (OpenInternDescriptor(d->openmode, d->compressor) == false) + { + Flags |= Fail; + return _error->Error("Seek on file %s because it couldn't be reopened", FileName.c_str()); + } + + if (To != 0) + return Skip(To); + + d->seekpos = To; + return true; + } int res; - if (gz) - res = gzseek(gz,To,SEEK_SET); +#ifdef HAVE_ZLIB + if (d != NULL && d->gz) + res = gzseek(d->gz,To,SEEK_SET); else +#endif res = lseek(iFd,To,SEEK_SET); if (res != (signed)To) { Flags |= Fail; return _error->Error("Unable to seek to %llu", To); } - + + if (d != NULL) + d->seekpos = To; return true; } /*}}}*/ @@ -1008,17 +1501,42 @@ bool FileFd::Seek(unsigned long long To) /* */ bool FileFd::Skip(unsigned long long Over) { + if (d != NULL && (d->pipe == true +#ifdef HAVE_BZ2 + || d->bz2 != NULL +#endif + )) + { + d->seekpos += Over; + char buffer[1024]; + while (Over != 0) + { + unsigned long long toread = std::min((unsigned long long) sizeof(buffer), Over); + if (Read(buffer, toread) == false) + { + Flags |= Fail; + return _error->Error("Unable to seek ahead %llu",Over); + } + Over -= toread; + } + return true; + } + int res; - if (gz) - res = gzseek(gz,Over,SEEK_CUR); +#ifdef HAVE_ZLIB + if (d != NULL && d->gz != NULL) + res = gzseek(d->gz,Over,SEEK_CUR); else +#endif res = lseek(iFd,Over,SEEK_CUR); if (res < 0) { Flags |= Fail; return _error->Error("Unable to seek ahead %llu",Over); } - + if (d != NULL) + d->seekpos = res; + return true; } /*}}}*/ @@ -1027,11 +1545,13 @@ bool FileFd::Skip(unsigned long long Over) /* */ bool FileFd::Truncate(unsigned long long To) { - if (gz) +#if defined HAVE_ZLIB || defined HAVE_BZ2 + if (d != NULL && (d->gz != NULL || d->bz2 != NULL)) { Flags |= Fail; - return _error->Error("Truncating gzipped files is not implemented (%s)", FileName.c_str()); + return _error->Error("Truncating compressed files is not implemented (%s)", FileName.c_str()); } +#endif if (ftruncate(iFd,To) != 0) { Flags |= Fail; @@ -1046,13 +1566,31 @@ bool FileFd::Truncate(unsigned long long To) /* */ unsigned long long FileFd::Tell() { + // In theory, we could just return seekpos here always instead of + // seeking around, but not all users of FileFd use always Seek() and co + // so d->seekpos isn't always true and we can just use it as a hint if + // we have nothing else, but not always as an authority… + if (d != NULL && (d->pipe == true +#ifdef HAVE_BZ2 + || d->bz2 != NULL +#endif + )) + return d->seekpos; + off_t Res; - if (gz) - Res = gztell(gz); +#ifdef HAVE_ZLIB + if (d != NULL && d->gz != NULL) + Res = gztell(d->gz); else +#endif Res = lseek(iFd,0,SEEK_CUR); if (Res == (off_t)-1) + { + Flags |= Fail; _error->Errno("lseek","Failed to determine the current file position"); + } + if (d != NULL) + d->seekpos = Res; return Res; } /*}}}*/ @@ -1062,9 +1600,26 @@ unsigned long long FileFd::Tell() unsigned long long FileFd::FileSize() { struct stat Buf; - - if (fstat(iFd,&Buf) != 0) + if ((d == NULL || d->pipe == false) && fstat(iFd,&Buf) != 0) + { + Flags |= Fail; return _error->Errno("fstat","Unable to determine the file size"); + } + + // for compressor pipes st_size is undefined and at 'best' zero + if ((d != NULL && d->pipe == true) || S_ISFIFO(Buf.st_mode)) + { + // we set it here, too, as we get the info here for free + // in theory the Open-methods should take care of it already + if (d != NULL) + d->pipe = true; + if (stat(FileName.c_str(), &Buf) != 0) + { + Flags |= Fail; + return _error->Errno("stat","Unable to determine the file size"); + } + } + return Buf.st_size; } /*}}}*/ @@ -1075,21 +1630,45 @@ unsigned long long FileFd::Size() { unsigned long long size = FileSize(); + // for compressor pipes st_size is undefined and at 'best' zero, + // so we 'read' the content and 'seek' back - see there + if (d != NULL && (d->pipe == true +#ifdef HAVE_BZ2 + || (d->bz2 && size > 0) +#endif + )) + { + unsigned long long const oldSeek = Tell(); + char ignore[1000]; + unsigned long long read = 0; + do { + Read(ignore, sizeof(ignore), &read); + } while(read != 0); + size = Tell(); + Seek(oldSeek); + } +#ifdef HAVE_ZLIB // only check gzsize if we are actually a gzip file, just checking for - // "gz" is not sufficient as uncompressed files will be opened with + // "gz" is not sufficient as uncompressed files could be opened with // gzopen in "direct" mode as well - if (gz && !gzdirect(gz) && size > 0) + else if (d != NULL && d->gz && !gzdirect(d->gz) && size > 0) { + off_t const oldPos = lseek(iFd,0,SEEK_CUR); /* 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"); + { + Flags |= Fail; + 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"); + { + Flags |= Fail; + return _error->Errno("read","Unable to read original size of gzipped file"); + } #ifdef WORDS_BIGENDIAN uint32_t tmp_size = size; @@ -1098,33 +1677,73 @@ unsigned long long FileFd::Size() size = tmp_size; #endif - if (lseek(iFd, orig_pos, SEEK_SET) < 0) - return _error->Errno("lseek","Unable to seek in gzipped file"); + if (lseek(iFd, oldPos, SEEK_SET) < 0) + { + Flags |= Fail; + return _error->Errno("lseek","Unable to seek in gzipped file"); + } + return size; } +#endif return size; } /*}}}*/ +// FileFd::ModificationTime - Return the time of last touch /*{{{*/ +// --------------------------------------------------------------------- +/* */ +time_t FileFd::ModificationTime() +{ + struct stat Buf; + if ((d == NULL || d->pipe == false) && fstat(iFd,&Buf) != 0) + { + Flags |= Fail; + _error->Errno("fstat","Unable to determine the modification time of file %s", FileName.c_str()); + return 0; + } + + // for compressor pipes st_size is undefined and at 'best' zero + if ((d != NULL && d->pipe == true) || S_ISFIFO(Buf.st_mode)) + { + // we set it here, too, as we get the info here for free + // in theory the Open-methods should take care of it already + if (d != NULL) + d->pipe = true; + if (stat(FileName.c_str(), &Buf) != 0) + { + Flags |= Fail; + _error->Errno("fstat","Unable to determine the modification time of file %s", FileName.c_str()); + return 0; + } + } + + return Buf.st_mtime; +} + /*}}}*/ // FileFd::Close - Close the file if the close flag is set /*{{{*/ // --------------------------------------------------------------------- /* */ bool FileFd::Close() { + if (iFd == -1) + return true; + bool Res = true; if ((Flags & AutoClose) == AutoClose) { - if (gz != NULL) { - 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 %s"), FileName.c_str()); - } else - if (iFd > 0 && close(iFd) != 0) - Res &= _error->Errno("close",_("Problem closing the file %s"), FileName.c_str()); + if ((Flags & Compressed) != Compressed && iFd > 0 && close(iFd) != 0) + Res &= _error->Errno("close",_("Problem closing the file %s"), FileName.c_str()); + + if (d != NULL) + { + Res &= d->CloseDown(FileName); + delete d; + d = NULL; + } } - if ((Flags & Replace) == Replace && iFd >= 0) { + if ((Flags & Replace) == Replace) { 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()); @@ -1133,14 +1752,14 @@ bool FileFd::Close() } 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 %s"), FileName.c_str()); - + if (Res == false) + Flags |= Fail; return Res; } /*}}}*/ @@ -1151,8 +1770,13 @@ bool FileFd::Sync() { #ifdef _POSIX_SYNCHRONIZED_IO if (fsync(iFd) != 0) + { + Flags |= Fail; return _error->Errno("sync",_("Problem syncing the file")); + } #endif return true; } /*}}}*/ + +gzFile FileFd::gzFd() { return (gzFile) d->gz; }