#include <dirent.h>
#include <signal.h>
#include <errno.h>
+#include <glob.h>
+
#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
fl.l_len = 0;
if (fcntl(FD,F_SETLK,&fl) == -1)
{
+ // always close to not leak resources
+ int Tmp = errno;
+ close(FD);
+ errno = Tmp;
+
if (errno == ENOLCK)
{
_error->Warning(_("Not using locking for nfs mounted lock file %s"),File.c_str());
return dup(0); // Need something for the caller to close
- }
+ }
+
if (Errors == true)
_error->Errno("open",_("Could not get lock %s"),File.c_str());
- int Tmp = errno;
- close(FD);
- errno = Tmp;
return -1;
}
return false;
// we are not going to create directories "into the blue"
- if (Path.find(Parent, 0) != 0)
+ if (Path.compare(0, Parent.length(), Parent) != 0)
return false;
vector<string> const dirs = VectorizeString(Path.substr(Parent.size()), '/');
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;
const char *C = Ent->d_name;
for (; *C != 0; ++C)
if (isalpha(*C) == 0 && isdigit(*C) == 0
- && *C != '_' && *C != '-') {
+ && *C != '_' && *C != '-' && *C != ':') {
// no required extension -> dot is a bad character
if (*C == '.' && Ext.empty() == false)
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;
while (1)
{
// Read the link
- int Res;
+ ssize_t Res;
if ((Res = readlink(NFile.c_str(),Buffer,sizeof(Buffer))) <= 0 ||
- (unsigned)Res >= sizeof(Buffer))
+ (size_t)Res >= sizeof(Buffer))
return File;
// Append or replace the previous path
return true;
}
/*}}}*/
+// MergeKeepFdsFromConfiguration - Merge APT::Keep-Fds configuration /*{{{*/
+// ---------------------------------------------------------------------
+/* This is used to merge the APT::Keep-Fds with the provided KeepFDs
+ * set.
+ */
+void MergeKeepFdsFromConfiguration(std::set<int> &KeepFDs)
+{
+ Configuration::Item const *Opts = _config->Tree("APT::Keep-Fds");
+ if (Opts != 0 && Opts->Child != 0)
+ {
+ Opts = Opts->Child;
+ for (; Opts != 0; Opts = Opts->Next)
+ {
+ if (Opts->Value.empty() == true)
+ continue;
+ int fd = atoi(Opts->Value.c_str());
+ KeepFDs.insert(fd);
+ }
+ }
+}
+ /*}}}*/
// ExecFork - Magical fork that sanitizes the context before execing /*{{{*/
// ---------------------------------------------------------------------
/* This is used if you want to cleanse the environment for the forked
child, it fixes up the important signals and nukes all of the fds,
otherwise acts like normal fork. */
pid_t ExecFork()
+{
+ set<int> KeepFDs;
+ // we need to merge the Keep-Fds as external tools like
+ // debconf-apt-progress use it
+ MergeKeepFdsFromConfiguration(KeepFDs);
+ return ExecFork(KeepFDs);
+}
+
+pid_t ExecFork(std::set<int> KeepFDs)
{
// Fork off the process
pid_t Process = fork();
signal(SIGCONT,SIG_DFL);
signal(SIGTSTP,SIG_DFL);
- set<int> KeepFDs;
- Configuration::Item const *Opts = _config->Tree("APT::Keep-Fds");
- if (Opts != 0 && Opts->Child != 0)
- {
- Opts = Opts->Child;
- for (; Opts != 0; Opts = Opts->Next)
- {
- if (Opts->Value.empty() == true)
- continue;
- int fd = atoi(Opts->Value.c_str());
- KeepFDs.insert(fd);
- }
- }
-
// Close all of our FDs - just in case
- for (int K = 3; K != 40; K++)
+ for (int K = 3; K != sysconf(_SC_OPEN_MAX); K++)
{
if(KeepFDs.find(K) == KeepFDs.end())
fcntl(K,F_SETFD,FD_CLOEXEC);
// 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());
+ return FileFdError("Autodetection on %s only works in ReadOnly openmode!", 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<APT::Configuration::Compressor> const compressors = APT::Configuration::getCompressors();
std::vector<APT::Configuration::Compressor>::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 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() && name != "gzip")
- return _error->Error("Can't find a configured compressor %s for file %s", name.c_str(), FileName.c_str());
+ if (compressor == compressors.end())
+ return FileFdError("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 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;
+
+ 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))
{
unlink(FileName.c_str());
}
- if (compressor != compressors.end())
+ 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);
+ #undef if_FLAGGED_SET
+
+ if ((Mode & Atomic) == Atomic)
{
- 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());
+ char *name = strdup((FileName + ".XXXXXX").c_str());
+
+ if((iFd = mkstemp(name)) == -1)
+ {
+ free(name);
+ return FileFdErrno("mkstemp", "Could not create temporary file for %s", FileName.c_str());
+ }
+
+ TemporaryFileName = string(name);
+ free(name);
- _error->Error("Forking external compressor %s is not implemented for %s", compressor->Name.c_str(), FileName.c_str());
+ if(Perms != 600 && fchmod(iFd, Perms) == -1)
+ return FileFdErrno("fchmod", "Could not change permissions for temporary file %s", TemporaryFileName.c_str());
}
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 FileFdErrno("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;
}
// 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<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;
+
+ 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 (OpenInternDescriptor(Mode, Compress) == false)
+ if (AutoClose == false && (
+#ifdef HAVE_ZLIB
+ compressor.Name == "gzip" ||
+#endif
+#ifdef HAVE_BZ2
+ compressor.Name == "bzip2" ||
+#endif
+ false))
{
- if (AutoClose)
- close (iFd);
- return _error->Errno("gzdopen",_("Could not open file descriptor %d"), Fd);
+ // 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(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)
+ 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
- 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<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 /*{{{*/
gracefully. */
bool FileFd::Read(void *To,unsigned long long Size,unsigned long long *Actual)
{
- int Res;
+ ssize_t Res;
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 /*{{{*/
/* */
bool FileFd::Write(const void *From,unsigned long long Size)
{
- int Res;
+ ssize_t Res;
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)
+{
+ ssize_t 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)
{
- int res;
- if (gz)
- res = gzseek(gz,To,SEEK_SET);
- else
- res = lseek(iFd,To,SEEK_SET);
- if (res != (signed)To)
+ if (d != NULL && (d->pipe == true
+#ifdef HAVE_BZ2
+ || d->bz2 != NULL
+#endif
+ ))
{
- Flags |= Fail;
- return _error->Error("Unable to seek to %llu", To);
+ // 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;
}
-
+ off_t res;
+#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 != (off_t)To)
+ return FileFdError("Unable to seek to %llu", To);
+
+ if (d != NULL)
+ d->seekpos = To;
return true;
}
/*}}}*/
/* */
bool FileFd::Skip(unsigned long long Over)
{
- int res;
- if (gz)
- res = gzseek(gz,Over,SEEK_CUR);
+ 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;
+ }
+
+ off_t res;
+#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());
- }
+ // truncating /dev/null is always successful - as we get an error otherwise
+ if (To == 0 && FileName == "/dev/null")
+ return true;
+#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;
}
/*}}}*/
+static bool StatFileFd(char const * const msg, int const iFd, std::string const &FileName, struct stat &Buf, FileFdPrivate * const d) /*{{{*/
+{
+ bool ispipe = (d != NULL && d->pipe == true);
+ if (ispipe == false)
+ {
+ if (fstat(iFd,&Buf) != 0)
+ // higher-level code will generate more meaningful messages,
+ // even translated this would be meaningless for users
+ return _error->Errno("fstat", "Unable to determine %s for fd %i", msg, iFd);
+ ispipe = S_ISFIFO(Buf.st_mode);
+ }
+
+ // for compressor pipes st_size is undefined and at 'best' zero
+ if (ispipe == true)
+ {
+ // 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 _error->Errno("fstat", "Unable to determine %s for file %s", msg, FileName.c_str());
+ }
+ return true;
+}
+ /*}}}*/
// FileFd::FileSize - Return the size of the file /*{{{*/
-// ---------------------------------------------------------------------
-/* */
unsigned long long FileFd::FileSize()
{
struct stat Buf;
-
- if (fstat(iFd,&Buf) != 0)
- return _error->Errno("fstat","Unable to determine the file size");
+ if (StatFileFd("file size", iFd, FileName, Buf, d) == false)
+ {
+ Flags |= Fail;
+ return 0;
+ }
return Buf.st_size;
}
/*}}}*/
+// FileFd::ModificationTime - Return the time of last touch /*{{{*/
+time_t FileFd::ModificationTime()
+{
+ struct stat Buf;
+ if (StatFileFd("modification time", iFd, FileName, Buf, d) == false)
+ {
+ Flags |= Fail;
+ return 0;
+ }
+ return Buf.st_mtime;
+}
+ /*}}}*/
// FileFd::Size - Return the size of the content in the file /*{{{*/
// ---------------------------------------------------------------------
/* */
{
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 {
+ if (Read(ignore, sizeof(ignore), &read) == false)
+ {
+ Seek(oldSeek);
+ return 0;
+ }
+ } 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");
- size = 0L;
+ {
+ FileFdErrno("lseek","Unable to seek to end of gzipped file");
+ return 0;
+ }
+ size = 0;
if (read(iFd, &size, 4) != 4)
- return _error->Errno("read","Unable to read original size of gzipped file");
+ {
+ FileFdErrno("read","Unable to read original size of gzipped file");
+ return 0;
+ }
#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)
+ {
+ FileFdErrno("lseek","Unable to seek in gzipped file");
+ return 0;
+ }
+
return size;
}
+#endif
return size;
}
/* */
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());
}
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; }
+
+
+// Glob - wrapper around "glob()" /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+std::vector<std::string> Glob(std::string const &pattern, int flags)
+{
+ std::vector<std::string> result;
+ glob_t globbuf;
+ int glob_res;
+ unsigned int i;
+
+ glob_res = glob(pattern.c_str(), flags, NULL, &globbuf);
+
+ if (glob_res != 0)
+ {
+ if(glob_res != GLOB_NOMATCH) {
+ _error->Errno("glob", "Problem with glob");
+ return result;
+ }
+ }
+
+ // append results
+ for(i=0;i<globbuf.gl_pathc;i++)
+ result.push_back(string(globbuf.gl_pathv[i]));
+
+ globfree(&globbuf);
+ return result;
+}
+ /*}}}*/
+
+std::string GetTempDir()
+{
+ const char *tmpdir = getenv("TMPDIR");
+
+#ifdef P_tmpdir
+ if (!tmpdir)
+ tmpdir = P_tmpdir;
+#endif
+
+ // check that tmpdir is set and exists
+ struct stat st;
+ if (!tmpdir || strlen(tmpdir) == 0 || stat(tmpdir, &st) != 0)
+ tmpdir = "/tmp";
+
+ return string(tmpdir);
+}
projects / apt.git / blobdiff