diff options
| -rw-r--r-- | apt-inst/contrib/extracttar.cc | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/apt-inst/contrib/extracttar.cc b/apt-inst/contrib/extracttar.cc index 49ed5db56..fb4db42f8 100644 --- a/apt-inst/contrib/extracttar.cc +++ b/apt-inst/contrib/extracttar.cc @@ -161,8 +161,8 @@ bool ExtractTar::Go(pkgDirStream &Stream) return false; // Loop over all blocks - string LastLongLink; - string LastLongName; + string LastLongLink, ItemLink; + string LastLongName, ItemName; while (1) { bool BadRecord = false; @@ -208,25 +208,23 @@ bool ExtractTar::Go(pkgDirStream &Stream) StrToNum(Tar->Major,Itm.Major,sizeof(Tar->Major),8) == false || StrToNum(Tar->Minor,Itm.Minor,sizeof(Tar->Minor),8) == false) return _error->Error(_("Corrupted archive")); - - // Grab the filename + + // Grab the filename and link target: use last long name if one was + // set, otherwise use the header value as-is, but remember that it may + // fill the entire 100-byte block and needs to be zero-terminated. + // See Debian Bug #689582. if (LastLongName.empty() == false) Itm.Name = (char *)LastLongName.c_str(); else - { - Tar->Name[sizeof(Tar->Name)-1] = 0; - Itm.Name = Tar->Name; - } + Itm.Name = (char *)ItemName.assign(Tar->Name, sizeof(Tar->Name)).c_str(); if (Itm.Name[0] == '.' && Itm.Name[1] == '/' && Itm.Name[2] != 0) Itm.Name += 2; - - // Grab the link target - Tar->Name[sizeof(Tar->LinkName)-1] = 0; - Itm.LinkTarget = Tar->LinkName; if (LastLongLink.empty() == false) Itm.LinkTarget = (char *)LastLongLink.c_str(); - + else + Itm.LinkTarget = (char *)ItemLink.assign(Tar->LinkName, sizeof(Tar->LinkName)).c_str(); + // Convert the type over switch (Tar->LinkFlag) { |