# $SAFE=2 and tempfile, tmpdir

**URL:** <https://www.ruby-forum.com/t/safe-2-and-tempfile-tmpdir/141665>\
**Category:** Development\
**Created:** [June 28, 2008, 9:00pm UTC](https://www.ruby-forum.com/t/safe-2-and-tempfile-tmpdir/141665 "2008-06-28T21:00:28Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![arton](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/90db22/32.png) [@arton](https://www.ruby-forum.com/u/arton)\
**Post date:** [June 28, 2008, 9:00pm UTC](https://www.ruby-forum.com/t/safe-2-and-tempfile-tmpdir/141665/1 "2008-06-28T21:00:28Z")

</div>

artone$B$G$9!#e(B

Ruby 1.8.7-p22e$B$G!“e(B2e$BE@$”$j$^$9!#e(B  
1e$B$D$O!"e(Btempfile.rbe$B$G!"e(B$SAFE \>=  
2e$B$N\>l9g$Ke(BTempfile.newe$B$,e(BRuntimeErrore$B$G\<:GTe(B  
e$B$9$k$N$,0U?^E\*$+$I$&$+$N3NG’$G$9!#e(B

C:\home\arton\>ruby -rtempfile -e ‘$SAFE=2;Tempfile.new(“test”)’  
c:/home/ruby/lib/ruby/1.8/tempfile.rb:52:in `initialize': cannot generate tempfi le `’ (RuntimeError)  
from -e:1:in `new’  
from -e:1

e$B$b$70U?^E\*$G$J$1$l$P!"e(B$SAFEe$B$,e(B2e$B$N\>l9g$K$Oe(BTempfile.newe$B$O@.8y$7$FM\_$7$$$G$9!#e(B  
Filee$B%/%i%9$OM?$($i$l$?%U%!%$%kL\>$,e(Btainte$B$G$J$1$l$P!"e(B$SAFEe$B$,e(B4e$B$h$j\>.$5$1$le(B  
e$B$P%U%!%$%k$N:n@.$r5v$7$F$$$^$9$,!"e(BTempfilee$B$N%U%!%$%kL\>$O0BA4$J$O$:$J$N$G!“e(B  
e$BF1MM$G$”$C$F$[$7$$$H;W$$$^$9!#6qBNE\*$K$d$j$?$$$3$H$O!"e(Bopen-urie$B$r;H$C$?e(B  
Webe$B%5%$%H$+$i$N%3%s%F%s%DFI$_9~$_$G$9!#e(B  
e$B$J$\*!“e(BRuntimeErrore$B$H$J$k860x$O!”%U%!%$%kL\>@8@.$N$H$-$K8F$S=P$9e(Bmake\_tmpname  
e$B$G!"e(B$$e$B$rMxMQ$7$Fe(Bpide$B!Je(B$SAFE=2e$B$Ge(BSecurityErrore$B!K$r\<hF@$7$h$&$H$7$F$$$k$?$a!"e(B  
get\_pide$B$,!"e(B$SAFE\>=2e$B$Ge(BSecurityErrore$B$H$7$F$$$k$+$i$G$9!#$3$N$?$a%U%!%$%kL\>e(B  
e$B$,@8@.$5$l$F$$$J$$\>uBV$G%U%!%$%k$r:n@.$7$h$&$H$7$F!"e(BRuntimeErrore$B$H$J$j$^e(B  
e$B$9!#e(B

2e$BE@L$O!“e(BWindows  
Vistae$B0J9\_$Ne(BWindowse$B8GM-$N8=\>]$G$9$,!“e(B$SAFE\>0e$B$N\>l9g$Ne(B  
tmpdir.rbe$B$Ne(BDir::tmpdire$B$N5sF0$H$$$&$+@\_Dj$,$”$^$j$&$^$/$”$j$^$;$s!#e(B  
e$B6qBNE\*$K$O!"e(B$SAFE\>0e$B$N$?$a!"4D6-JQ?t$r;2\>H$;$:$K0BA4$J%F%s%]%i%j%G%#%l%/e(B  
e$B%H%j$rF@$h$&$H$$$&0U?^$@$H$O;W$$$^$9$,!"e(B@@systmpdire$B$rMxMQ$7$F$$$^$9!#e(B  
e$B$G!"e(B@@systemdire$B$H$7$F!“e(BWin32  
APIe$B$G\<hF@$7$?e(BWindowse$B%G%#%l%/%H%jFb$Ne(BTempe$B%G%#e(B  
e$B%l%/%H%j$r@\_Dj$7$F$$$^$9$,!”$3$N%G%#%l%/%H%j$O!"e(BWindows  
Vistae$B$G$O4IM}\<T8"8B$N$_e(B  
e$B%"%/%;%92DG=$G!"0lHL$N%f!\<%6!\<$OFI$_=q$-$G$-$^$;$s!#e(B

C:\home\arton\>ruby -rtmpdir -e ‘p Dir::tmpdir’  
“C:/Users/arton/AppData/Local/Temp”

C:\home\arton\>ruby -rtmpdir -e ‘$SAFE=1; p Dir::tmpdir’  
“C:/Windows/Temp”

Windowse$BB&$N0U?^$H!"85$Ne(Btmpdire$B$N0U?^$r!“B:=E$9$k$J$i$P!”%f!\<%6!\<8GM-$N%Fe(B  
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e$B$&$+!#e(B  
e$B$H$$$&$o$1$G!“0J2\<$Ke(Btmpdir.rbe$B$N%Q%C%A$rE:IU$7$^$9!#e(B  
SHGetFolderPath  
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e$B$^$9!#e(BSHGetFolderPath  
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e$B:n$H$J$k$h$&$K$7$F$$$^$9!#e(B

diff -u [tmpdir.rb.org](http://tmpdir.rb.org) tmpdir.rb  
— [tmpdir.rb.org](http://tmpdir.rb.org) Sun Jun 29 02:20:44 2008  
+++ tmpdir.rb Sun Jun 29 02:47:54 2008  
@@ -9,18 +9,25 @@  
class Dir

## @@systmpdir = ‘/tmp’

- CSIDL\_LOCAL\_APPDATA = 0x001c
- begin  
require ‘Win32API’  
max\_pathlen = 260  
windir = ’ '\*(max\_pathlen+1)  
begin

- 

```
 getdir = Win32API.new('kernel32', 'GetSystemWindowsDirectory', 

```

‘PL’, ‘L’)

- 

```
 getdir = Win32API.new('shell32', 'SHGetFolderPath', 'LLLLP', 'L')

```

- 

```
 raise RuntimeError if getdir.call(0, CSIDL_LOCAL_APPDATA, 0, 0, 

```

windir) != 0

- 

```
 windir = File.expand_path(windir.rstrip)

```

rescue RuntimeError

- 

```
 getdir = Win32API.new('kernel32', 'GetWindowsDirectory', 'PL', 

```

‘L’)

- 

```
 begin

```

- 

```
   getdir = Win32API.new('kernel32', 'GetSystemWindowsDirectory', 

```

‘PL’, ‘L’)

- 

```
 rescue RuntimeError

```

- 

```
   getdir = Win32API.new('kernel32', 'GetWindowsDirectory', 'PL', 

```

‘L’)

- 

```
 end

```

- 

```
 len = getdir.call(windir, windir.size)

```

- 

```
 windir = File.expand_path(windir[0, len])

```

end

- len = getdir.call(windir, windir.size)
- windir = File.expand\_path(windir[0, len])  
temp = File.join(windir, ‘temp’)  
@@systmpdir = temp if File.directory?(temp) and  
File.writable?(temp)  
rescue LoadError

e$B%Q%C%A8e$O!"e(B$SAFE=0e$B$N=\>Mh$NCM$HF1$8$b$N$K$J$j$^$9$,!"e(BTMPe$B4D6-JQ?t$N@\_Dj$Ke(B  
e$B$O1F6A$5$l$J$$$3$H$G3NG’$G$-$^$9!#e(B  
C:\home\arton\test\>set TMP=c:\home\arton\test  
C:\home\arton\test\>ruby -rtmpdir -e ‘$SAFE=1;p Dir::tmpdir’  
“C:/Users/arton/AppData/Local/Temp”

e$B$b$C$H$b!"e(BRuby-1.9.0-01e$B$@$H!"e(BTempfile.newe$B$be(BDir::tmpdire$B$b!"e(B$SAFE\>0e$B$G$O!“e(B  
e$B$$$:$l$be(BFile.expand\_pathe$B$K0z$C$+$+$C$Fe(BSecurityErrore$B$K$J$j$^$9!#e(B  
e$B$G$-$l$P!”$3$A$i$bF0$$$FM\_$7$$$G$9!#e(B

–  
arton [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)