From 54491d275184428be6e28e3f22f04859b7288105 Mon Sep 17 00:00:00 2001
From: Eric Blake <ebb9@byu.net>
Date: Wed, 28 Oct 2009 06:21:24 -0600
Subject: printenv: ignore bogus variable names

Exposed by env a=b=c printenv a=b.

* src/printenv.c (main): Silently reject = in names.
* tests/misc/printenv: Test for it.
* NEWS: Document this.
---
 src/printenv.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src')

diff --git a/src/printenv.c b/src/printenv.c
index b0f0154b2..acf09bdc7 100644
--- a/src/printenv.c
+++ b/src/printenv.c
@@ -125,6 +125,10 @@ main (int argc, char **argv)
         {
           bool matched = false;
 
+          /* 'printenv a=b' is silent, even if 'a=b=c' is in environ.  */
+          if (strchr (argv[i], '='))
+            continue;
+
           for (env = environ; *env; ++env)
             {
               ep = *env;
-- 
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