From db56eb073e595a862f620e244e23471665f63527 Mon Sep 17 00:00:00 2001 From: Tao Bao Date: Thu, 23 Mar 2017 06:34:20 -0700 Subject: updater: Fix the broken case for apply_patch_check(). It's valid to provide only 1 argument to apply_patch_check(). We shouldn't fail the argument parsing. Bug: 36541737 Test: recovery_component_test passes. Test: recovery_component_test captures the failure without the fix. Test: The previously failed update applies successfully. Change-Id: Iee4c54ed33b877fc4885945b085341ec5c64f663 --- tests/component/updater_test.cpp | 49 ++++++++++++++++++++++++++++++++++++++++ updater/install.cpp | 2 +- 2 files changed, 50 insertions(+), 1 deletion(-) diff --git a/tests/component/updater_test.cpp b/tests/component/updater_test.cpp index ef121a973..5652ddf46 100644 --- a/tests/component/updater_test.cpp +++ b/tests/component/updater_test.cpp @@ -127,6 +127,55 @@ TEST_F(UpdaterTest, sha1_check) { expect(nullptr, "sha1_check()", kArgsParsingFailure); } +TEST_F(UpdaterTest, apply_patch_check) { + // Zero-argument is not valid. + expect(nullptr, "apply_patch_check()", kArgsParsingFailure); + + // File not found. + expect("", "apply_patch_check(\"/doesntexist\")", kNoCause); + + std::string src_file = from_testdata_base("old.file"); + std::string src_content; + ASSERT_TRUE(android::base::ReadFileToString(src_file, &src_content)); + size_t src_size = src_content.size(); + std::string src_hash = get_sha1(src_content); + + // One-argument with EMMC:file:size:sha1 should pass the check. + std::string filename = android::base::Join( + std::vector{ "EMMC", src_file, std::to_string(src_size), src_hash }, ":"); + std::string cmd = "apply_patch_check(\"" + filename + "\")"; + expect("t", cmd.c_str(), kNoCause); + + // EMMC:file:(size-1):sha1:(size+1):sha1 should fail the check. + std::string filename_bad = android::base::Join( + std::vector{ "EMMC", src_file, std::to_string(src_size - 1), src_hash, + std::to_string(src_size + 1), src_hash }, + ":"); + cmd = "apply_patch_check(\"" + filename_bad + "\")"; + expect("", cmd.c_str(), kNoCause); + + // EMMC:file:(size-1):sha1:size:sha1:(size+1):sha1 should pass the check. + filename_bad = + android::base::Join(std::vector{ "EMMC", src_file, std::to_string(src_size - 1), + src_hash, std::to_string(src_size), src_hash, + std::to_string(src_size + 1), src_hash }, + ":"); + cmd = "apply_patch_check(\"" + filename_bad + "\")"; + expect("t", cmd.c_str(), kNoCause); + + // Multiple arguments. + cmd = "apply_patch_check(\"" + filename + "\", \"wrong_sha1\", \"wrong_sha2\")"; + expect("", cmd.c_str(), kNoCause); + + cmd = "apply_patch_check(\"" + filename + "\", \"wrong_sha1\", \"" + src_hash + + "\", \"wrong_sha2\")"; + expect("t", cmd.c_str(), kNoCause); + + cmd = "apply_patch_check(\"" + filename_bad + "\", \"wrong_sha1\", \"" + src_hash + + "\", \"wrong_sha2\")"; + expect("t", cmd.c_str(), kNoCause); +} + TEST_F(UpdaterTest, file_getprop) { // file_getprop() expects two arguments. expect(nullptr, "file_getprop()", kArgsParsingFailure); diff --git a/updater/install.cpp b/updater/install.cpp index c9a0270ec..f91f3fc9f 100644 --- a/updater/install.cpp +++ b/updater/install.cpp @@ -691,7 +691,7 @@ Value* ApplyPatchCheckFn(const char* name, State* state, const std::vector sha1s; - if (!ReadArgs(state, argv, &sha1s, 1, argv.size() - 1)) { + if (argv.size() > 1 && !ReadArgs(state, argv, &sha1s, 1, argv.size() - 1)) { return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name); } int result = applypatch_check(filename.c_str(), sha1s); -- cgit v1.2.3