#include <dirent.h>
#include <signal.h>
#include <errno.h>
+#include <glob.h>
+
#include <set>
#include <algorithm>
/* 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;
}
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);
return Open(FileName, ReadOnly, Gzip, Perms);
if (Compress == Auto && (Mode & WriteOnly) == WriteOnly)
- return _error->Error("Autodetection on %s only works in ReadOnly openmode!", FileName.c_str());
+ 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();
case Auto:
case Extension:
// Unreachable
- return _error->Error("Opening File %s in None, Auto or Extension should be already handled?!?", FileName.c_str());
+ 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 _error->Error("Can't find a configured compressor %s for file %s", name.c_str(), FileName.c_str());
+ return FileFdError("Can't find a configured compressor %s for file %s", name.c_str(), FileName.c_str());
}
if (compressor == compressors.end())
- return _error->Error("Can't find a match for specified compressor mode for file %s", FileName.c_str());
+ 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)
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());
+ return FileFdError("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());
+ 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))
{
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);
+ if ((Mode & Atomic) == Atomic)
+ {
+ 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);
+
+ if(Perms != 600 && fchmod(iFd, Perms) == -1)
+ return FileFdErrno("fchmod", "Could not change permissions for temporary file %s", TemporaryFileName.c_str());
+ }
else
iFd = open(FileName.c_str(), fileflags, Perms);
close (iFd);
iFd = -1;
}
- return _error->Errno("open",_("Could not open file %s"), FileName.c_str());
+ return FileFdErrno("open",_("Could not open file %s"), FileName.c_str());
}
SetCloseExec(iFd,true);
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);
+ 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())
- return _error->Error("Can't find a configured compressor %s for file %s", name.c_str(), FileName.c_str());
-
+ {
+ 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)
else
iFd = Fd;
this->FileName = "";
- if (OpenInternDescriptor(Mode, compressor) == false)
+ if (Fd == -1 || OpenInternDescriptor(Mode, compressor) == false)
{
- if (AutoClose)
+ if (iFd != -1 && (
+#ifdef HAVE_ZLIB
+ compressor.Name == "gzip" ||
+#endif
+#ifdef HAVE_BZ2
+ compressor.Name == "bzip2" ||
+#endif
+ AutoClose == true))
+ {
close (iFd);
- return _error->Errno("gzdopen",_("Could not open file descriptor %d"), Fd);
+ iFd = -1;
+ }
+ return FileFdError(_("Could not open file descriptor %d"), Fd);
}
return true;
}
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());
- }
+ return FileFdError("ReadWrite mode is not supported for file %s", FileName.c_str());
bool const Comp = (Mode & WriteOnly) == WriteOnly;
if (Comp == false)
// Create a data pipe
int Pipe[2] = {-1,-1};
if (pipe(Pipe) != 0)
- {
- Flags |= Fail;
- return _error->Errno("pipe",_("Failed to create subprocess IPC"));
- }
+ return FileFdErrno("pipe",_("Failed to create subprocess IPC"));
for (int J = 0; J != 2; J++)
SetCloseExec(Pipe[J],true);
{
Close();
if (d != NULL)
- {
d->CloseDown(FileName);
- delete d;
- d = NULL;
- }
+ 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;
{
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);
+ return FileFdError("gzread: %s (%d: %s)", _("Read error"), err, errmsg);
}
#endif
#ifdef HAVE_BZ2
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);
+ return FileFdError("BZ2_bzread: %s (%d: %s)", _("Read error"), err, errmsg);
}
#endif
- return _error->Errno("read",_("Read error"));
+ return FileFdErrno("read",_("Read error"));
}
To = (char *)To + 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 /*{{{*/
/* */
bool FileFd::Write(const void *From,unsigned long long Size)
{
- int Res;
+ ssize_t Res;
errno = 0;
do
{
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);
+ return FileFdError("gzwrite: %s (%d: %s)", _("Write error"), err, errmsg);
}
#endif
#ifdef HAVE_BZ2
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);
+ return FileFdError("BZ2_bzwrite: %s (%d: %s)", _("Write error"), err, errmsg);
}
#endif
- return _error->Errno("write",_("Write error"));
+ return FileFdErrno("write",_("Write error"));
}
From = (char *)From + Res;
if (Size == 0)
return true;
-
- Flags |= Fail;
- return _error->Error(_("write, still have %llu to write but couldn't"), Size);
+
+ 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;
+ ssize_t Res;
errno = 0;
do
{
return Skip(To - seekpos);
if ((d->openmode & ReadOnly) != ReadOnly)
- {
- Flags |= Fail;
- return _error->Error("Reopen is only implemented for read-only files!");
- }
+ return FileFdError("Reopen is only implemented for read-only files!");
#ifdef HAVE_BZ2
- if (d->bz2 != NULL)
- BZ2_bzclose(d->bz2);
+ if (d->bz2 != NULL)
+ {
+ BZ2_bzclose(d->bz2);
+ d->bz2 = NULL;
+ }
#endif
if (iFd != -1)
close(iFd);
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()!");
- }
+ return FileFdError("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());
- }
+ 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;
+ 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 != (signed)To)
- {
- Flags |= Fail;
- return _error->Error("Unable to seek to %llu", To);
- }
+ if (res != (off_t)To)
+ return FileFdError("Unable to seek to %llu", To);
if (d != NULL)
d->seekpos = To;
{
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);
- }
+ return FileFdError("Unable to seek ahead %llu",Over);
Over -= toread;
}
return true;
}
- int res;
+ off_t res;
#ifdef HAVE_ZLIB
if (d != NULL && d->gz != NULL)
res = gzseek(d->gz,Over,SEEK_CUR);
#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;
/* */
bool FileFd::Truncate(unsigned long long To)
{
+ // 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))
- {
- Flags |= Fail;
- return _error->Error("Truncating compressed files is not implemented (%s)", FileName.c_str());
- }
+ 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;
}
/*}}}*/
#endif
Res = lseek(iFd,0,SEEK_CUR);
if (Res == (off_t)-1)
- {
- Flags |= Fail;
- _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;
{
struct stat Buf;
if ((d == NULL || d->pipe == false) && fstat(iFd,&Buf) != 0)
- {
- Flags |= Fail;
- return _error->Errno("fstat","Unable to determine the file size");
- }
+ 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))
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 FileFdErrno("stat","Unable to determine the file size");
}
return Buf.st_size;
char ignore[1000];
unsigned long long read = 0;
do {
- Read(ignore, sizeof(ignore), &read);
+ if (Read(ignore, sizeof(ignore), &read) == false)
+ {
+ Seek(oldSeek);
+ return 0;
+ }
} while(read != 0);
size = Tell();
Seek(oldSeek);
// FIXME: Size for gz-files is limited by 32bit… no largefile support
if (lseek(iFd, -4, SEEK_END) < 0)
{
- Flags |= Fail;
- return _error->Errno("lseek","Unable to seek to end of gzipped file");
+ FileFdErrno("lseek","Unable to seek to end of gzipped file");
+ return 0;
}
- size = 0L;
+ size = 0;
if (read(iFd, &size, 4) != 4)
{
- Flags |= Fail;
- 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
if (lseek(iFd, oldPos, SEEK_SET) < 0)
{
- Flags |= Fail;
- return _error->Errno("lseek","Unable to seek in gzipped file");
+ FileFdErrno("lseek","Unable to seek in gzipped file");
+ return 0;
}
return size;
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());
+ FileFdErrno("fstat","Unable to determine the modification time of file %s", FileName.c_str());
return 0;
}
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());
+ FileFdErrno("fstat","Unable to determine the modification time of file %s", FileName.c_str());
return 0;
}
}
bool FileFd::Sync()
{
if (fsync(iFd) != 0)
+ 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)
{
- Flags |= Fail;
- return _error->Errno("sync",_("Problem syncing the file"));
+ va_start(args,Description);
+ if (_error->InsertErrno(GlobalError::ERROR, Function, Description, args, errsv, msgSize) == false)
+ break;
+ va_end(args);
}
- return true;
+ 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