* Drop real uid/gid in the suid wrapper, thus allowing commits to remote

[git.ikiwiki.info.git] / IkiWiki / Wrapper.pm

diff --git a/IkiWiki/Wrapper.pm b/IkiWiki/Wrapper.pm
index 7d27abd06a6e742b66349115ef4107136f36e11f..deba58d2893e819d51968f9889c99f2807cd26e0 100644 (file)
--- a/IkiWiki/Wrapper.pm
+++ b/IkiWiki/Wrapper.pm
@@ -47,10 +47,6 @@ EOF
 EOF
        }
        
-       # This is only set by plugins, which append to it on startup, so
-       # avoid storing it in the wrapper.
-       $config{headercontent}="";
-       
        $Data::Dumper::Indent=0; # no newlines
        my $configstring=Data::Dumper->Dump([\%config], ['*config']);
        $configstring=~s/\\/\\\\/g;
@@ -79,6 +75,11 @@ $envsave
        newenviron[i]=NULL;
        environ=newenviron;
 
+       if (setregid(getegid(), -1) != 0 || setreuid(geteuid(), -1) != 0) {
+               perror("failed to drop real uid/gid");
+               exit(1);
+       }
+
        execl("$this", "$this", NULL);
        perror("failed to run $this");
        exit(1);