From d6f9a4f11acdfc8efea19a1644f355cdb90bfbb5 Mon Sep 17 00:00:00 2001
From: Sebastian Hahn <sebastian@torproject.org>
Date: Tue, 2 May 2017 05:06:45 +0200
Subject: [PATCH] cargo-online-mode configure argument

Passing --enable-cargo-online-mode during configure allows cargo to make
network requests while building Tor or running tests. If this flag is
not supplied, the dependencies need to be available in the form of a
local mirror.
---
 configure.ac                 | 8 ++++++++
 src/rust/tor_util/include.am | 2 +-
 src/test/include.am          | 3 ++-
 src/test/test_rust.sh        | 2 +-
 4 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index d281903fcc..1a780d3c3b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -57,6 +57,8 @@ AC_ARG_ENABLE(memory-sentinels,
    AS_HELP_STRING(--disable-memory-sentinels, [disable code that tries to prevent some kinds of memory access bugs. For fuzzing only.]))
 AC_ARG_ENABLE(rust,
    AS_HELP_STRING(--enable-rust, [enable rust integration]))
+AC_ARG_ENABLE(cargo-online-mode,
+   AS_HELP_STRING(--enable-cargo-online-mode, [Allow cargo to make network requests to fetch crates. For builds with rust only.]))
 
 if test "x$enable_coverage" != "xyes" -a "x$enable_asserts_in_tests" = "xno" ; then
     AC_MSG_ERROR([Can't disable assertions outside of coverage build])
@@ -267,6 +269,12 @@ if test "x$enable_rust" = "xyes"; then
   fi
 
   AC_DEFINE([HAVE_RUST], 1, [have Rust])
+  if test "x$enable_cargo_online_mode" = "xyes"; then
+    CARGO_ONLINE=
+  else
+    CARGO_ONLINE=--frozen
+  fi
+  AC_SUBST(CARGO_ONLINE)
 fi
 
 ifdef([AC_C_FLEXIBLE_ARRAY_MEMBER], [
diff --git a/src/rust/tor_util/include.am b/src/rust/tor_util/include.am
index 3b877649a3..863046b929 100644
--- a/src/rust/tor_util/include.am
+++ b/src/rust/tor_util/include.am
@@ -7,6 +7,6 @@ EXTRA_DIST +=\
 src/rust/target/release/libtor_util.a: FORCE
 	( cd "$(abs_top_srcdir)/src/rust/tor_util" ; \
 		CARGO_TARGET_DIR="$(abs_top_builddir)/src/rust/target" \
-		$(CARGO) build --release --quiet --frozen )
+		$(CARGO) build --release --quiet $(CARGO_ONLINE) )
 
 FORCE:
diff --git a/src/test/include.am b/src/test/include.am
index 5fd61dd3e6..c0aca8afe2 100644
--- a/src/test/include.am
+++ b/src/test/include.am
@@ -7,7 +7,8 @@ TESTS_ENVIRONMENT = \
 	export abs_top_srcdir="$(abs_top_srcdir)"; \
 	export builddir="$(builddir)"; \
 	export TESTING_TOR_BINARY="$(TESTING_TOR_BINARY)"; \
-	export CARGO="$(CARGO)";
+	export CARGO="$(CARGO)"; \
+	export CARGO_ONLINE="$(CARGO_ONLINE)";
 
 TESTSCRIPTS = \
 	src/test/fuzz_static_testcases.sh \
diff --git a/src/test/test_rust.sh b/src/test/test_rust.sh
index b41be978b9..7c71008e02 100755
--- a/src/test/test_rust.sh
+++ b/src/test/test_rust.sh
@@ -7,7 +7,7 @@ exitcode=0
 
 for crate in $crates; do
     cd "${abs_top_srcdir:-.}/src/rust/${crate}"
-    "${CARGO:-cargo}" test --frozen || exitcode=1
+    "${CARGO:-cargo}" test ${CARGO_ONLINE-"--frozen"} || exitcode=1
 done
 
 exit $exitcode