#include <apt-pkg/strutl.h>
#include <apt-pkg/error.h>
#include <apt-pkg/sptr.h>
+#include <apt-pkg/aptconfiguration.h>
#include <apt-pkg/configuration.h>
#include <cstdlib>
#include <set>
#include <algorithm>
+#ifdef HAVE_ZLIB
+ #include <zlib.h>
+#endif
+#ifdef HAVE_BZ2
+ #include <bzlib.h>
+#endif
+
#ifdef WORDS_BIGENDIAN
#include <inttypes.h>
#endif
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 /*{{{*/
// ---------------------------------------------------------------------
/* */
/* The caller is expected to set things so that failure causes erasure */
bool CopyFile(FileFd &From,FileFd &To)
{
- if (From.IsOpen() == false || To.IsOpen() == false)
+ if (From.IsOpen() == false || To.IsOpen() == false ||
+ From.Failed() == true || To.Failed() == true)
return false;
// Buffered copy between fds
std::vector<string> List;
- if (DirectoryExists(Dir.c_str()) == false)
+ if (DirectoryExists(Dir) == false)
{
_error->Error(_("List of files can't be created as '%s' is not a directory"), Dir.c_str());
return List;
if (Ent->d_type != DT_REG)
#endif
{
- if (RealFileExists(File.c_str()) == false)
+ if (RealFileExists(File) == false)
{
+ // do not show ignoration warnings for directories
+ if (
+#ifdef _DIRENT_HAVE_D_TYPE
+ Ent->d_type == DT_DIR ||
+#endif
+ DirectoryExists(File) == 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;
}
closedir(D);
+ if (SortList == true)
+ std::sort(List.begin(),List.end());
+ return List;
+}
+std::vector<string> 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<string> List;
+
+ if (DirectoryExists(Dir) == 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) == 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;
// FileFd::Open - Open a file /*{{{*/
// ---------------------------------------------------------------------
/* The most commonly used open mode combinations are given with Mode */
-bool FileFd::Open(string FileName,OpenMode Mode, unsigned long Perms)
+bool FileFd::Open(string FileName,unsigned int const Mode,CompressMode Compress, unsigned long const Perms)
{
- Close();
- Flags = AutoClose;
- switch (Mode)
+ if (Mode == ReadOnlyGzip)
+ return Open(FileName, ReadOnly, Gzip, Perms);
+
+ if (Compress == Auto && (Mode & WriteOnly) == WriteOnly)
+ return FileFdError("Autodetection on %s only works in ReadOnly openmode!", FileName.c_str());
+
+ std::vector<APT::Configuration::Compressor> const compressors = APT::Configuration::getCompressors();
+ std::vector<APT::Configuration::Compressor>::const_iterator compressor = compressors.begin();
+ if (Compress == Auto)
{
- case ReadOnly:
- iFd = open(FileName.c_str(),O_RDONLY);
- break;
-
- case ReadOnlyGzip:
- iFd = open(FileName.c_str(),O_RDONLY);
- if (iFd > 0) {
- gz = gzdopen (iFd, "r");
- if (gz == NULL) {
- close (iFd);
- iFd = -1;
- }
- }
- break;
-
- case WriteAtomic:
+ for (; compressor != compressors.end(); ++compressor)
{
- 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);
+ std::string file = std::string(FileName).append(compressor->Extension);
+ if (FileExists(file) == false)
+ continue;
+ FileName = file;
break;
}
-
- case WriteEmpty:
+ }
+ else if (Compress == Extension)
+ {
+ std::string::size_type const found = FileName.find_last_of('.');
+ std::string ext;
+ if (found != std::string::npos)
{
- 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);
- 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();
+ }
}
-
- case WriteExists:
- iFd = open(FileName.c_str(),O_RDWR);
- break;
+ 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
+ {
+ 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;
+ case Auto:
+ case Extension:
+ // Unreachable
+ return FileFdError("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())
+ return FileFdError("Can't find a configured compressor %s for file %s", name.c_str(), FileName.c_str());
+ }
- case WriteAny:
- iFd = open(FileName.c_str(),O_RDWR | O_CREAT,Perms);
- break;
+ if (compressor == compressors.end())
+ return FileFdError("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;
- case WriteTemp:
+ if ((Mode & WriteOnly) != WriteOnly && (Mode & (Atomic | Create | Empty | Exclusive)) != 0)
+ return FileFdError("ReadOnly mode for %s doesn't accept additional flags!", FileName.c_str());
+ if ((Mode & ReadWrite) == 0)
+ return FileFdError("No openmode provided in FileFd::Open for %s", FileName.c_str());
+
+ if ((Mode & Atomic) == Atomic)
+ {
+ Flags |= Replace;
+ char *name = strdup((FileName + ".XXXXXX").c_str());
+ TemporaryFileName = string(mktemp(name));
+ free(name);
+ }
+ else if ((Mode & (Exclusive | Create)) == (Exclusive | Create))
+ {
+ // for atomic, this will be done by rename in Close()
unlink(FileName.c_str());
- iFd = open(FileName.c_str(),O_RDWR | O_CREAT | O_EXCL,Perms);
- break;
- }
+ }
+ if ((Mode & Empty) == Empty)
+ {
+ struct stat Buf;
+ if (lstat(FileName.c_str(),&Buf) == 0 && S_ISLNK(Buf.st_mode))
+ unlink(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);
+
+ 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
+ iFd = open(FileName.c_str(), fileflags, Perms);
- if (iFd < 0)
- return _error->Errno("open",_("Could not open file %s"),FileName.c_str());
-
this->FileName = FileName;
+ if (iFd == -1 || OpenInternDescriptor(Mode, compressor) == false)
+ {
+ if (iFd != -1)
+ {
+ close (iFd);
+ iFd = -1;
+ }
+ return FileFdErrno("open",_("Could not open file %s"), FileName.c_str());
+ }
+
SetCloseExec(iFd,true);
return true;
}
+ /*}}}*/
+// FileFd::OpenDescriptor - Open a filedescriptor /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool FileFd::OpenDescriptor(int Fd, unsigned int const Mode, CompressMode Compress, bool AutoClose)
+{
+ std::vector<APT::Configuration::Compressor> const compressors = APT::Configuration::getCompressors();
+ std::vector<APT::Configuration::Compressor>::const_iterator compressor = compressors.begin();
+ std::string name;
+
+ // compat with the old API
+ if (Mode == ReadOnlyGzip && Compress == None)
+ Compress = Gzip;
-bool FileFd::OpenDescriptor(int Fd, OpenMode Mode, bool AutoClose)
+ 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:
+ if (AutoClose == true && Fd != -1)
+ close(Fd);
+ return FileFdError("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())
+ {
+ if (AutoClose == true && Fd != -1)
+ close(Fd);
+ return FileFdError("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 (Mode == ReadOnlyGzip) {
- gz = gzdopen (iFd, "r");
- if (gz == NULL) {
- if (AutoClose)
- close (iFd);
- return _error->Errno("gzdopen",_("Could not open file descriptor %d"),
- Fd);
- }
+ 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 (Fd == -1 || OpenInternDescriptor(Mode, compressor) == false)
+ {
+ if (iFd != -1 && (
+#ifdef HAVE_ZLIB
+ compressor.Name == "gzip" ||
+#endif
+#ifdef HAVE_BZ2
+ compressor.Name == "bzip2" ||
+#endif
+ AutoClose == true))
+ {
+ close (iFd);
+ iFd = -1;
+ }
+ return FileFdError(_("Could not open file descriptor %d"), Fd);
+ }
+ return true;
+}
+bool FileFd::OpenInternDescriptor(unsigned int const Mode, APT::Configuration::Compressor const &compressor)
+{
+ 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;
+ }
+#endif
+#ifdef HAVE_BZ2
+ if (compressor.Name == "bzip2")
+ {
+ if (d->bz2 != NULL)
+ {
+ BZ2_bzclose(d->bz2);
+ d->bz2 = NULL;
+ }
+ if ((Mode & ReadWrite) == ReadWrite)
+ d->bz2 = BZ2_bzdopen(iFd, "r+");
+ else if ((Mode & WriteOnly) == WriteOnly)
+ d->bz2 = BZ2_bzdopen(iFd, "w");
+ else
+ 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)
+ return FileFdError("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)
+ return FileFdErrno("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
+ 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<char const*> Args;
+ Args.push_back(compressor.Binary.c_str());
+ std::vector<std::string> const * const addArgs =
+ (Comp == true) ? &(compressor.CompressArgs) : &(compressor.UncompressArgs);
+ for (std::vector<std::string>::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;
}
/*}}}*/
FileFd::~FileFd()
{
Close();
+ if (d != NULL)
+ {
+ d->CloseDown(FileName);
+ delete d;
+ d = NULL;
+ }
}
/*}}}*/
// FileFd::Read - Read a bit of the file /*{{{*/
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)
{
- Flags |= Fail;
- return _error->Errno("read",_("Read error"));
+ if (errno == EINTR)
+ continue;
+#ifdef HAVE_ZLIB
+ if (d != NULL && d->gz != NULL)
+ {
+ int err;
+ char const * const errmsg = gzerror(d->gz, &err);
+ if (err != Z_ERRNO)
+ return FileFdError("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 FileFdError("BZ2_bzread: %s (%d: %s)", _("Read error"), err, errmsg);
+ }
+#endif
+ return FileFdErrno("read",_("Read error"));
}
To = (char *)To + Res;
Size -= Res;
+ if (d != NULL)
+ d->seekpos += Res;
if (Actual != 0)
*Actual += Res;
}
Flags |= HitEof;
return true;
}
-
- Flags |= Fail;
- return _error->Error(_("read, still have %llu to read but none left"), Size);
+
+ return FileFdError(_("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 /*{{{*/
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;
- return _error->Errno("write",_("Write error"));
+#ifdef HAVE_ZLIB
+ if (d != NULL && d->gz != NULL)
+ {
+ int err;
+ char const * const errmsg = gzerror(d->gz, &err);
+ if (err != Z_ERRNO)
+ return FileFdError("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 FileFdError("BZ2_bzwrite: %s (%d: %s)", _("Write error"), err, errmsg);
+ }
+#endif
+ return FileFdErrno("write",_("Write error"));
}
From = (char *)From + Res;
Size -= Res;
+ if (d != NULL)
+ d->seekpos += Res;
}
while (Res > 0 && Size > 0);
if (Size == 0)
return true;
-
- Flags |= Fail;
+
+ return FileFdError(_("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);
}
/*}}}*/
/* */
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)
+ return FileFdError("Reopen is only implemented for read-only files!");
+#ifdef HAVE_BZ2
+ if (d->bz2 != NULL)
+ {
+ BZ2_bzclose(d->bz2);
+ d->bz2 = NULL;
+ }
+#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)
+ return FileFdError("Reopen is not implemented for pipes opened with FileFd::OpenDescriptor()!");
+ }
+
+ if (OpenInternDescriptor(d->openmode, d->compressor) == false)
+ return FileFdError("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);
- }
-
+ return FileFdError("Unable to seek to %llu", To);
+
+ if (d != NULL)
+ d->seekpos = To;
return true;
}
/*}}}*/
/* */
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)
+ return FileFdError("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);
- }
-
+ return FileFdError("Unable to seek ahead %llu",Over);
+ if (d != NULL)
+ d->seekpos = res;
+
return true;
}
/*}}}*/
/* */
bool FileFd::Truncate(unsigned long long To)
{
- if (gz)
- {
- Flags |= Fail;
- return _error->Error("Truncating gzipped files is not implemented (%s)", FileName.c_str());
- }
+#if defined HAVE_ZLIB || defined HAVE_BZ2
+ if (d != NULL && (d->gz != NULL || d->bz2 != NULL))
+ return FileFdError("Truncating compressed files is not implemented (%s)", FileName.c_str());
+#endif
if (ftruncate(iFd,To) != 0)
- {
- Flags |= Fail;
- return _error->Error("Unable to truncate to %llu",To);
- }
-
+ return FileFdError("Unable to truncate to %llu",To);
+
return true;
}
/*}}}*/
/* */
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)
- _error->Errno("lseek","Failed to determine the current file position");
+ FileFdErrno("lseek","Failed to determine the current file position");
+ if (d != NULL)
+ d->seekpos = Res;
return Res;
}
/*}}}*/
unsigned long long FileFd::FileSize()
{
struct stat Buf;
+ if ((d == NULL || d->pipe == false) && fstat(iFd,&Buf) != 0)
+ return FileFdErrno("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)
+ return FileFdErrno("stat","Unable to determine the file size");
+ }
- if (fstat(iFd,&Buf) != 0)
- return _error->Errno("fstat","Unable to determine the file size");
return Buf.st_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");
+ return FileFdErrno("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");
+ return FileFdErrno("read","Unable to read original size of gzipped file");
#ifdef WORDS_BIGENDIAN
uint32_t tmp_size = 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)
+ return FileFdErrno("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)
+ {
+ FileFdErrno("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)
+ {
+ FileFdErrno("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());
FileName = TemporaryFileName; // for the unlink() below.
+ TemporaryFileName.clear();
}
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;
}
/*}}}*/
/* */
bool FileFd::Sync()
{
-#ifdef _POSIX_SYNCHRONIZED_IO
if (fsync(iFd) != 0)
- return _error->Errno("sync",_("Problem syncing the file"));
-#endif
+ return FileFdErrno("sync",_("Problem syncing the file"));
return true;
}
/*}}}*/
+// FileFd::FileFdErrno - set Fail and call _error->Errno *{{{*/
+bool FileFd::FileFdErrno(const char *Function, const char *Description,...)
+{
+ Flags |= Fail;
+ va_list args;
+ size_t msgSize = 400;
+ int const errsv = errno;
+ while (true)
+ {
+ va_start(args,Description);
+ if (_error->InsertErrno(GlobalError::ERROR, Function, Description, args, errsv, msgSize) == false)
+ break;
+ va_end(args);
+ }
+ return false;
+}
+ /*}}}*/
+// FileFd::FileFdError - set Fail and call _error->Error *{{{*/
+bool FileFd::FileFdError(const char *Description,...) {
+ Flags |= Fail;
+ va_list args;
+ size_t msgSize = 400;
+ while (true)
+ {
+ va_start(args,Description);
+ if (_error->Insert(GlobalError::ERROR, Description, args, msgSize) == false)
+ break;
+ va_end(args);
+ }
+ return false;
+}
+ /*}}}*/
+
+gzFile FileFd::gzFd() { return (gzFile) d->gz; }
projects / apt.git / blobdiff