Check if we have secrets before decrypting or running smoke tests

And enable running CircleCI on forked pull requests

bin/circle-dependencies-post

@@ -28,9 +28,9 @@ source "$STATE"
 mkdir -p $(dirname $SRCDIR) && cp -r $(pwd)/ $SRCDIR
 
 if [ -n "$TEST_AND_PUBLISH" ] ; then
-    bin/setup-circleci-secrets "$SECRET_PASSWORD"
+    [ -z "$SECRET_PASSWORD" ] || bin/setup-circleci-secrets "$SECRET_PASSWORD"
     cd $SRCDIR; git submodule update --init
-    if [ "$CIRCLE_NODE_INDEX" = "0" ] ; then
+    if [ "$CIRCLE_NODE_INDEX" = "0" -a -n "$SECRET_PASSWORD" ] ; then
         cd $SRCDIR/test; ./gce.sh make_template
     fi
     cd $SRCDIR/build

bin/circle-test-pre

@@ -10,5 +10,5 @@ if [ -n "$TEST_AND_PUBLISH" ] ; then
     make COVERAGE=true RM= all
 
     cd $SRCDIR/test
-    ./gce.sh setup && eval $(./gce.sh hosts) && ./setup.sh
+    [ -z "$SECRET_PASSWORD" ] || (./gce.sh setup && eval $(./gce.sh hosts) && ./setup.sh)
 fi

bin/circle-test-smoke

@@ -5,6 +5,7 @@ set -e
 source "$STATE"
 
 if [ -n "$TEST_AND_PUBLISH" ] ; then
+    [ -n "$SECRET_PASSWORD" ] || echo "Cannot run smoke tests: no secret key" && exit 1
     cd $SRCDIR/test
     eval $(./gce.sh hosts)
     export COVERAGE=true

bin/circle-test-teardown

@@ -6,6 +6,6 @@ source "$STATE"
 
 if [ -n "$TEST_AND_PUBLISH" ] ; then
     cd $SRCDIR/test
-    ./gce.sh destroy
+    [ -z "$SECRET_PASSWORD" ] || ./gce.sh destroy
     test "$CIRCLE_NODE_INDEX" != "0" || (cd $SRCDIR/test; ./gen_coverage_reports.sh)
 fi

circle.yml

@@ -2,7 +2,6 @@ general:
   branches:
     ignore:
       - gh\-pages
-      - /pull\/.*/
 
 machine:
   services: