mirror of
https://github.com/hashcat/hashcat.git
synced 2024-12-23 15:18:16 +00:00
111 lines
3.7 KiB
C++
111 lines
3.7 KiB
C++
|
|
|
|
static bool UnixSymlink(CommandData *Cmd,const char *Target,const wchar *LinkName,RarTime *ftm,RarTime *fta)
|
|
{
|
|
CreatePath(LinkName,true,Cmd->DisableNames);
|
|
|
|
// Overwrite prompt was already issued and confirmed earlier, so we can
|
|
// remove existing symlink or regular file here. PrepareToDelete was also
|
|
// called earlier inside of uiAskReplaceEx.
|
|
DelFile(LinkName);
|
|
|
|
char LinkNameA[NM];
|
|
WideToChar(LinkName,LinkNameA,ASIZE(LinkNameA));
|
|
if (symlink(Target,LinkNameA)==-1) // Error.
|
|
{
|
|
if (errno==EEXIST)
|
|
uiMsg(UIERROR_ULINKEXIST,LinkName);
|
|
else
|
|
{
|
|
uiMsg(UIERROR_SLINKCREATE,UINULL,LinkName);
|
|
ErrHandler.SetErrorCode(RARX_WARNING);
|
|
}
|
|
return false;
|
|
}
|
|
#ifdef USE_LUTIMES
|
|
#ifdef UNIX_TIME_NS
|
|
timespec times[2];
|
|
times[0].tv_sec=fta->GetUnix();
|
|
times[0].tv_nsec=fta->IsSet() ? long(fta->GetUnixNS()%1000000000) : UTIME_NOW;
|
|
times[1].tv_sec=ftm->GetUnix();
|
|
times[1].tv_nsec=ftm->IsSet() ? long(ftm->GetUnixNS()%1000000000) : UTIME_NOW;
|
|
utimensat(AT_FDCWD,LinkNameA,times,AT_SYMLINK_NOFOLLOW);
|
|
#else
|
|
struct timeval tv[2];
|
|
tv[0].tv_sec=fta->GetUnix();
|
|
tv[0].tv_usec=long(fta->GetUnixNS()%1000000000/1000);
|
|
tv[1].tv_sec=ftm->GetUnix();
|
|
tv[1].tv_usec=long(ftm->GetUnixNS()%1000000000/1000);
|
|
lutimes(LinkNameA,tv);
|
|
#endif
|
|
#endif
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
static bool IsFullPath(const char *PathA) // Unix ASCII version.
|
|
{
|
|
return *PathA==CPATHDIVIDER;
|
|
}
|
|
|
|
|
|
bool ExtractUnixLink30(CommandData *Cmd,ComprDataIO &DataIO,Archive &Arc,const wchar *LinkName)
|
|
{
|
|
char Target[NM];
|
|
if (IsLink(Arc.FileHead.FileAttr))
|
|
{
|
|
size_t DataSize=(size_t)Arc.FileHead.PackSize;
|
|
if (DataSize>ASIZE(Target)-1)
|
|
return false;
|
|
if ((size_t)DataIO.UnpRead((byte *)Target,DataSize)!=DataSize)
|
|
return false;
|
|
Target[DataSize]=0;
|
|
|
|
DataIO.UnpHash.Init(Arc.FileHead.FileHash.Type,1);
|
|
DataIO.UnpHash.Update(Target,strlen(Target));
|
|
DataIO.UnpHash.Result(&Arc.FileHead.FileHash);
|
|
|
|
// Return true in case of bad checksum, so link will be processed further
|
|
// and extraction routine will report the checksum error.
|
|
if (!DataIO.UnpHash.Cmp(&Arc.FileHead.FileHash,Arc.FileHead.UseHashKey ? Arc.FileHead.HashKey:NULL))
|
|
return true;
|
|
|
|
wchar TargetW[NM];
|
|
CharToWide(Target,TargetW,ASIZE(TargetW));
|
|
// Check for *TargetW==0 to catch CharToWide failure.
|
|
// Use Arc.FileHead.FileName instead of LinkName, since LinkName
|
|
// can include the destination path as a prefix, which can
|
|
// confuse IsRelativeSymlinkSafe algorithm.
|
|
if (!Cmd->AbsoluteLinks && (*TargetW==0 || IsFullPath(TargetW) ||
|
|
!IsRelativeSymlinkSafe(Cmd,Arc.FileHead.FileName,LinkName,TargetW)))
|
|
return false;
|
|
return UnixSymlink(Cmd,Target,LinkName,&Arc.FileHead.mtime,&Arc.FileHead.atime);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
bool ExtractUnixLink50(CommandData *Cmd,const wchar *Name,FileHeader *hd)
|
|
{
|
|
char Target[NM];
|
|
WideToChar(hd->RedirName,Target,ASIZE(Target));
|
|
if (hd->RedirType==FSREDIR_WINSYMLINK || hd->RedirType==FSREDIR_JUNCTION)
|
|
{
|
|
// Cannot create Windows absolute path symlinks in Unix. Only relative path
|
|
// Windows symlinks can be created here. RAR 5.0 used \??\ prefix
|
|
// for Windows absolute symlinks, since RAR 5.1 /??/ is used.
|
|
// We escape ? as \? to avoid "trigraph" warning
|
|
if (strncmp(Target,"\\??\\",4)==0 || strncmp(Target,"/\?\?/",4)==0)
|
|
return false;
|
|
DosSlashToUnix(Target,Target,ASIZE(Target));
|
|
}
|
|
// Use hd->FileName instead of LinkName, since LinkName can include
|
|
// the destination path as a prefix, which can confuse
|
|
// IsRelativeSymlinkSafe algorithm.
|
|
if (!Cmd->AbsoluteLinks && (IsFullPath(Target) ||
|
|
!IsRelativeSymlinkSafe(Cmd,hd->FileName,Name,hd->RedirName)))
|
|
return false;
|
|
return UnixSymlink(Cmd,Target,Name,&hd->mtime,&hd->atime);
|
|
}
|