From 49d6d1ccee5263e854224eddb5a010bb7c8c14f5 Mon Sep 17 00:00:00 2001
From: Julian Blake Kongslie <jblake@omgwallhack.org>
Date: Wed, 4 May 2011 21:31:36 -0700
Subject: Fix some encoding bugs.

---
 pinyweb/cgi-bin/newuser.cgi | 36 ++++++++++++++++++++----------------
 1 file changed, 20 insertions(+), 16 deletions(-)

diff --git a/pinyweb/cgi-bin/newuser.cgi b/pinyweb/cgi-bin/newuser.cgi
index 0fad219..98db83e 100755
--- a/pinyweb/cgi-bin/newuser.cgi
+++ b/pinyweb/cgi-bin/newuser.cgi
@@ -34,18 +34,22 @@ if( $q->param("n") && $q->param("a") && $q->param("p") ) {
     $pass = encode_base32( $cipher->encrypt( $pass ) );
   };
 
-  if ( $q->param("h") && $q->param("h") eq $code ) {
-    unless( open2( OUT, IN, "/usr/bin/sudo", "/usr/sbin/newuser", "--batch", $q->param("a"), $q->param("n") ) ) {
-      print "could not execute newrepo";
-      die;
-    };
-    # make things flushier
-    select((select(IN), $| = 1)[0]);
-    select((select(OUT), $| = 1)[0]);
-    print( IN $pass . "\n" );
-    close( IN );
-    while( <OUT> ) {
-      print;
+  if ( $q->param("h") ) {
+    if ( $q->param("h") eq $code ) {
+      unless( open2( OUT, IN, "/usr/bin/sudo", "/usr/sbin/newuser", "--batch", $q->param("a"), $q->param("n") ) ) {
+        print "could not execute newrepo";
+        die;
+      };
+      # make things flushier
+      select((select(IN), $| = 1)[0]);
+      select((select(OUT), $| = 1)[0]);
+      print( IN $pass . "\n" );
+      close( IN );
+      while( <OUT> ) {
+        print;
+      };
+    } else { # Invalid hash
+      print( "I'm sorry, the link you followed is invalid.\n" );
     };
   } else { # No hash, they need one sent to their address
     print( "Dispatching email to " . $q->param("a") . "...\n" );
@@ -61,10 +65,10 @@ if( $q->param("n") && $q->param("a") && $q->param("p") ) {
       print( MAIL "s" );
     };
     print( MAIL "://" . $ENV{"SERVER_NAME"} . $ENV{"SCRIPT_NAME"} . "?" );
-    print( MAIL "h=" . $code );
-    print( MAIL "&n=" . $q->param("n") );
-    print( MAIL "&a=" . $q->param("a") );
-    print( MAIL "&p=" . $pass );
+    print( MAIL "h=" . CGI::escape( $code ) );
+    print( MAIL "&n=" . CGI::escape( $q->param("n") ) );
+    print( MAIL "&a=" . CGI::escape( $q->param("a") ) );
+    print( MAIL "&p=" . CGI::escape( $pass ) );
     print( MAIL "\n");
     close( MAIL ); 
     print( "Done!" );
-- 
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