From 02cec4d51b57cfda2636131e89b3b80e4223a881 Mon Sep 17 00:00:00 2001
From: Chris Maynard <Christopher.Maynard@GTECH.COM>
Date: Fri, 13 Sep 2013 20:15:46 +0000
Subject: [PATCH] Allow an alternate application data location as specified by
 the new environment variable, WIRESHARK_APPDATA (chosen instead of my
 originally proposed WS_APPDATA name since  most other Wireshark-specific
 environment variables were already named with the WIRESHARK_ prefix).

See also: http://www.wireshark.org/lists/wireshark-users/201309/msg00013.html

svn path=/trunk/; revision=52022
---
 doc/wireshark.pod.template |  6 ++++++
 epan/filesystem.c          | 19 ++++++++++++++-----
 2 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/doc/wireshark.pod.template b/doc/wireshark.pod.template
index 28e1ebfc31..8c5365d6b8 100644
--- a/doc/wireshark.pod.template
+++ b/doc/wireshark.pod.template
@@ -2718,6 +2718,12 @@ See above in the description of the About:Plugins page.
 
 =over 4
 
+=item WIRESHARK_APPDATA
+
+On Windows, Wireshark normally stores all application data in %APPDATA% or
+%USERPROFILE%.  You can override the default location by exporting this
+environment variable to specify an alternate location.
+
 =item WIRESHARK_DEBUG_EP_NO_CHUNKS
 
 Normally per-packet memory is allocated in large "chunks."  This behavior
diff --git a/epan/filesystem.c b/epan/filesystem.c
index d7764b589f..dd5b308bee 100644
--- a/epan/filesystem.c
+++ b/epan/filesystem.c
@@ -307,7 +307,7 @@ static char *progfile_dir;
  */
 static char *appbundle_dir;
 #endif
- 
+
 /*
  * TRUE if we're running from the build directory and we aren't running
  * with special privileges.
@@ -1320,7 +1320,7 @@ get_persconffile_dir_no_profile(void)
 #ifdef _WIN32
     char *appdatadir;
     char *userprofiledir;
-    char *u3appdatapath;
+    char *altappdatapath;
 #else
     const char *homedir;
     struct passwd *pwd;
@@ -1331,15 +1331,24 @@ get_persconffile_dir_no_profile(void)
         return persconffile_dir;
 
 #ifdef _WIN32
+    /*
+     * See if the user has selected an alternate environment.
+     */
+    altappdatapath = getenv_utf8("WIRESHARK_APPDATA");
+    if (altappdatapath != NULL) {
+        persconffile_dir = altappdatapath;
+        return persconffile_dir;
+    }
+
     /*
      * See if we are running in a U3 environment.
      */
-    u3appdatapath = getenv_utf8("U3_APP_DATA_PATH");
-    if (u3appdatapath != NULL) {
+    altappdatapath = getenv_utf8("U3_APP_DATA_PATH");
+    if (altappdatapath != NULL) {
         /*
          * We are; use the U3 application data path.
          */
-        persconffile_dir = u3appdatapath;
+        persconffile_dir = altappdatapath;
     } else {
         /*
          * Use %APPDATA% or %USERPROFILE%, so that configuration