1 files changed, 95 insertions, 0 deletions
diff --git a/security/sandbox/linux/gtest/TestBrokerPolicy.cpp b/security/sandbox/linux/gtest/TestBrokerPolicy.cpp
new file mode 100644
index 0000000000..d881e6d290
--- /dev/null
+++ b/security/sandbox/linux/gtest/TestBrokerPolicy.cpp
@@ -0,0 +1,95 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gtest/gtest.h"
+
+#include "broker/SandboxBroker.h"
+
+namespace mozilla {
+
+static const int MAY_ACCESS = SandboxBroker::MAY_ACCESS;
+static const int MAY_READ = SandboxBroker::MAY_READ;
+static const int MAY_WRITE = SandboxBroker::MAY_WRITE;
+// static const int MAY_CREATE = SandboxBroker::MAY_CREATE;
+// static const int RECURSIVE = SandboxBroker::RECURSIVE;
+static const auto AddAlways = SandboxBroker::Policy::AddAlways;
+
+TEST(SandboxBrokerPolicyLookup, Simple)
+{
+  SandboxBroker::Policy p;
+  p.AddPath(MAY_READ, "/dev/urandom", AddAlways);
+
+  EXPECT_NE(0, p.Lookup("/dev/urandom")) << "Added path not found.";
+  EXPECT_EQ(MAY_ACCESS | MAY_READ, p.Lookup("/dev/urandom"))
+      << "Added path found with wrong perms.";
+  EXPECT_EQ(0, p.Lookup("/etc/passwd")) << "Non-added path was found.";
+}
+
+TEST(SandboxBrokerPolicyLookup, CopyCtor)
+{
+  SandboxBroker::Policy psrc;
+  psrc.AddPath(MAY_READ | MAY_WRITE, "/dev/null", AddAlways);
+  SandboxBroker::Policy pdst(psrc);
+  psrc.AddPath(MAY_READ, "/dev/zero", AddAlways);
+  pdst.AddPath(MAY_READ, "/dev/urandom", AddAlways);
+
+  EXPECT_EQ(MAY_ACCESS | MAY_READ | MAY_WRITE, psrc.Lookup("/dev/null"))
+      << "Common path absent in copy source.";
+  EXPECT_EQ(MAY_ACCESS | MAY_READ | MAY_WRITE, pdst.Lookup("/dev/null"))
+      << "Common path absent in copy destination.";
+
+  EXPECT_EQ(MAY_ACCESS | MAY_READ, psrc.Lookup("/dev/zero"))
+      << "Source-only path is absent.";
+  EXPECT_EQ(0, pdst.Lookup("/dev/zero"))
+      << "Source-only path is present in copy destination.";
+
+  EXPECT_EQ(0, psrc.Lookup("/dev/urandom"))
+      << "Destination-only path is present in copy source.";
+  EXPECT_EQ(MAY_ACCESS | MAY_READ, pdst.Lookup("/dev/urandom"))
+      << "Destination-only path is absent.";
+
+  EXPECT_EQ(0, psrc.Lookup("/etc/passwd"))
+      << "Non-added path is present in copy source.";
+  EXPECT_EQ(0, pdst.Lookup("/etc/passwd"))
+      << "Non-added path is present in copy source.";
+}
+
+TEST(SandboxBrokerPolicyLookup, Recursive)
+{
+  SandboxBroker::Policy psrc;
+  psrc.AddPath(MAY_READ | MAY_WRITE, "/dev/null", AddAlways);
+  psrc.AddPath(MAY_READ, "/dev/zero", AddAlways);
+  psrc.AddPath(MAY_READ, "/dev/urandom", AddAlways);
+
+  EXPECT_EQ(MAY_ACCESS | MAY_READ | MAY_WRITE, psrc.Lookup("/dev/null"))
+      << "Basic path is present.";
+  EXPECT_EQ(MAY_ACCESS | MAY_READ, psrc.Lookup("/dev/zero"))
+      << "Basic path has no extra flags";
+
+  psrc.AddDir(MAY_READ | MAY_WRITE, "/dev/");
+
+  EXPECT_EQ(MAY_ACCESS | MAY_READ | MAY_WRITE, psrc.Lookup("/dev/random"))
+      << "Permission via recursive dir.";
+  EXPECT_EQ(MAY_ACCESS | MAY_READ | MAY_WRITE, psrc.Lookup("/dev/sd/0"))
+      << "Permission via recursive dir, nested deeper";
+  EXPECT_EQ(0, psrc.Lookup("/dev/sd/0/")) << "Invalid path format.";
+  EXPECT_EQ(0, psrc.Lookup("/usr/dev/sd")) << "Match must be a prefix.";
+
+  psrc.AddDir(MAY_READ, "/dev/sd/");
+  EXPECT_EQ(MAY_ACCESS | MAY_READ | MAY_WRITE, psrc.Lookup("/dev/sd/0"))
+      << "Extra permissions from parent path granted.";
+  EXPECT_EQ(0, psrc.Lookup("/dev/..")) << "Refuse attempted subdir escape.";
+
+  psrc.AddDir(MAY_READ, "/tmp");
+  EXPECT_EQ(MAY_ACCESS | MAY_READ, psrc.Lookup("/tmp/good/a"))
+      << "Check whether dir add with no trailing / was sucessful.";
+  EXPECT_EQ(0, psrc.Lookup("/tmp_good_but_bad"))
+      << "Enforce terminator on directories.";
+  EXPECT_EQ(0, psrc.Lookup("/tmp/."))
+      << "Do not allow opening a directory handle.";
+}
+
+}  // namespace mozilla