1 files changed, 45 insertions, 0 deletions
diff --git a/tools/distrib/generate_grpc_shadow_boringssl_symbol_list.sh b/tools/distrib/generate_grpc_shadow_boringssl_symbol_list.sh
new file mode 100755
index 0000000000..2e5bb44548
--- /dev/null
+++ b/tools/distrib/generate_grpc_shadow_boringssl_symbol_list.sh
@@ -0,0 +1,45 @@
+#!/bin/bash
+# Copyright 2018 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Generate the list of boringssl symbols that need to be shadowed based on the
+# current boringssl submodule. Requires local toolchain to build boringssl.
+set -e
+
+cd $(dirname $0)
+
+symbol_list="../../src/objective-c/grpc_shadow_boringssl_symbol_list"
+
+ssl_lib='../../third_party/boringssl/build/ssl/libssl.a'
+crypto_lib='../../third_party/boringssl/build/crypto/libcrypto.a'
+
+# Generate boringssl archives
+( cd ../../third_party/boringssl ; mkdir -p build ; cd build ; cmake .. ; make )
+
+# Generate shadow_boringssl.h
+outputs="$(nm -C $ssl_lib)"$'\n'"$(nm -C $crypto_lib)"
+symbols=$(echo "$outputs" | 
+          grep '^[0-9a-f]* [A-Z] ' |               # Only public symbols
+          grep -v ' bssl::' |                      # Filter BoringSSL symbols since they are already namespaced
+          sed 's/(.*//g' |                         # Remove parenthesis from C++ symbols
+          grep '^[0-9a-f]* [A-Z] _' |              # Filter symbols that is not prefixed with '_'
+          sed 's/[0-9a-f]* [A-Z] _\(.*\)/\1/g')    # Extract the symbol names
+
+commit=$(git submodule | grep "boringssl " | awk '{print $1}' | head -n 1)
+
+echo "# Automatically generated by tools/distrib/generate_grpc_shadow_boringssl_symbol_list.sh" > $symbol_list
+echo $commit >> $symbol_list
+echo "$symbols" >> $symbol_list
+
+exit 0