chdir() to config directory before including

Make mr try to chdir() to the dirname() of any .mrconfig files it's
supposed to load. If the chdir() is successful, then the filename is
truncated to basename(). If the chdir() is unsuccessful, then processing
happens as before.

Signed-off-by: martin f. krafft <madduck@madduck.net>

diff --git a/mr b/mr
index 18e87616423e7d94ab3686733c137e094f84420b..b7cd3cb61c16b7a46bd116c868121597d2743cd0 100755 (executable)
--- a/mr
+++ b/mr
@@ -563,6 +563,7 @@ use warnings;
 use strict;
 use Getopt::Long;
 use Cwd qw(getcwd abs_path);
+use File::Basename;
 
 # things that can happen when mr runs a command
 use constant {
@@ -1278,6 +1279,7 @@ sub loadconfig {
        my @toload;
 
        my $in;
+       my $absf=abs_path($f);
        my $trusted;
        if (ref $f eq 'GLOB') {
                $dir="";
@@ -1285,7 +1287,6 @@ sub loadconfig {
                $trusted=1;
        }
        else {
-               my $absf=abs_path($f);
                if ($loaded{$absf}) {
                        return;
                }
@@ -1301,7 +1302,11 @@ sub loadconfig {
                }
 
                $dir=abs_path($dir)."/";
-               
+
+               if (chdir($dir)) {
+                       $f=basename($f);
+               }
+
                if (! exists $configfiles{$dir}) {
                        $configfiles{$dir}=$f;
                }
@@ -1323,7 +1328,12 @@ sub loadconfig {
                        return;
                }
 
-               print "mr: loading config $f\n" if $verbose;
+               if ($f =~ /\//) {
+                       print "mr: loading config $f\n" if $verbose;
+               } else {
+                       print "mr: loading config $f (from ".getcwd().")\n" if $verbose;
+               }
+
                open($in, "<", $f) || die "mr: open $f: $!\n";
        }
        my @lines=<$in>;
@@ -1367,7 +1377,7 @@ sub loadconfig {
                                "this can allow arbitrary code execution!)\n";
                }
                else {
-                       die "mr: $msg in untrusted $f line $lineno\n".
+                       die "mr: $msg in untrusted $absf line $lineno\n".
                                "(To trust this file, list it in ~/.mrtrust.)\n";
                }
        };