[PATCH v2] fff-hoods: Fix case of missing keyxchangev2data

[Adrian Schmutzler]

This fixes a missing /tmp/keyxchangev2data due to gateway
misconfiguration.

Changes in v2:
 - First set filename, then read json
 - Move filename evaluation to function

Signed-off-by: Adrian Schmutzler <freifunk at adrianschmutzler.de>
---
 .../fff/fff-hoods/files/lib/functions/fff/keyxchange     | 16 ++++++++++++++--
 src/packages/fff/fff-web/files/www/ssl/cgi-bin/home.html |  7 ++++---
 2 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/src/packages/fff/fff-hoods/files/lib/functions/fff/keyxchange b/src/packages/fff/fff-hoods/files/lib/functions/fff/keyxchange
index be27e5a..9aedc3c 100644
--- a/src/packages/fff/fff-hoods/files/lib/functions/fff/keyxchange
+++ b/src/packages/fff/fff-hoods/files/lib/functions/fff/keyxchange
@@ -4,9 +4,21 @@
 
 . /usr/share/libubox/jshn.sh
 
+getJsonPath() {
+	jsonfile=""
+	if [ -s /www/public/keyxchangev2data ] ; then
+		jsonfile="/www/public/keyxchangev2data"
+	elif [ -s /tmp/keyxchangev2data ] ; then
+		jsonfile="/tmp/keyxchangev2data"
+	fi
+	echo "$jsonfile"
+}
+
 getUpgradePath() {
-	if [ -s /tmp/keyxchangev2data ]; then
-		json_load "$(cat /tmp/keyxchangev2data)"
+	jsonfile="$(getJsonPath)"
+
+	if [ -n "$jsonfile" ] ; then
+		json_load "$(cat $jsonfile)"
 		json_select hood
 		json_get_var upath upgrade_path
 		echo "$upath"
diff --git a/src/packages/fff/fff-web/files/www/ssl/cgi-bin/home.html b/src/packages/fff/fff-web/files/www/ssl/cgi-bin/home.html
index 1569c01..64c89f7 100755
--- a/src/packages/fff/fff-web/files/www/ssl/cgi-bin/home.html
+++ b/src/packages/fff/fff-web/files/www/ssl/cgi-bin/home.html
@@ -48,9 +48,10 @@ else
 fi
 
 # read from keyxchangev2data
-. /usr/share/libubox/jshn.sh
-if [ -s /tmp/keyxchangev2data ] ; then
-	json_load "$(cat /tmp/keyxchangev2data)"
+. /lib/functions/fff/keyxchange
+jsonfile="$(getJsonPath)"
+if [ -n "$jsonfile" ] ; then
+	json_load "$(cat $jsonfile)"
 	json_select hood
 	json_get_var mesh_type2 mesh_type2
 	json_get_var mesh_type5 mesh_type5
-- 
2.7.4