Squashed 'Sources/OpenVPN3/' content from commit 0a6e0b6e54

git-subtree-dir: Sources/OpenVPN3
git-subtree-split: 0a6e0b6e542c2d19de1f416c4caccd899d72831a

deps/functions.sh

@@ -0,0 +1,47 @@
+function check_download()
+{
+  if [ -f $DL/$FNAME ]; then
+    CHECK=$(shasum -a 256 $DL/$FNAME |awk '{printf $1};')
+    if [ "$CHECK" == "$CSUM" ]; then
+      return 0
+    else
+      echo "Checksum mismatch for $FNAME. Was $CHECK, expected $CSUM"
+    fi
+  else
+    echo "$FNAME not found."
+  fi
+
+  return -1
+}
+
+function download()
+{
+  check_download && return 0
+
+  rm -f $DL/$FNAME
+  if [ -n "$URL" ]; then
+    wget $URL -O $DL/$FNAME
+  else
+    echo URL must be specified
+    exit 1
+  fi
+
+  check_download || return -1
+}
+
+function apply_patches()
+{
+  DEP_NAME=$1
+
+  # change directory since git apply got confused when
+  # applying patches to files which are not found in index
+  DIR=$(pwd)
+  pushd ${DIR}
+  cd /tmp
+  # apply pre-generated patches
+  for file in $O3/core/deps/${DEP_NAME}/patches/*.patch; do
+    echo Applying patch: $file
+    git apply --directory ${DIR} --unsafe-path $file
+  done
+  popd
+}