Merge "applypatch: Fix a potential nullptr dereferencing."
diff --git a/tests/component/updater_test.cpp b/tests/component/updater_test.cpp
index e8abb53..0b6b96f 100644
--- a/tests/component/updater_test.cpp
+++ b/tests/component/updater_test.cpp
@@ -72,7 +72,7 @@
if (expected == nullptr) {
ASSERT_FALSE(status);
} else {
- ASSERT_TRUE(status);
+ ASSERT_TRUE(status) << "Evaluate() finished with error message: " << state.errmsg;
ASSERT_STREQ(expected, result.c_str());
}
@@ -138,6 +138,25 @@
return print_sha1(digest);
}
+static Value* BlobToString(const char* name, State* state,
+ const std::vector<std::unique_ptr<Expr>>& argv) {
+ if (argv.size() != 1) {
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %zu", name, argv.size());
+ }
+
+ std::vector<std::unique_ptr<Value>> args;
+ if (!ReadValueArgs(state, argv, &args)) {
+ return nullptr;
+ }
+
+ if (args[0]->type != VAL_BLOB) {
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects a BLOB argument", name);
+ }
+
+ args[0]->type = VAL_STRING;
+ return args[0].release();
+}
+
class UpdaterTest : public ::testing::Test {
protected:
void SetUp() override {
@@ -145,6 +164,8 @@
RegisterInstallFunctions();
RegisterBlockImageFunctions();
+ RegisterFunction("blob_to_string", BlobToString);
+
// Each test is run in a separate process (isolated mode). Shared temporary files won't cause
// conflicts.
Paths::Get().set_cache_temp_source(temp_saved_source_.path);
@@ -192,33 +213,6 @@
expect(nullptr, "getprop(\"arg1\", \"arg2\")", kArgsParsingFailure);
}
-TEST_F(UpdaterTest, sha1_check) {
- // sha1_check(data) returns the SHA-1 of the data.
- expect("81fe8bfe87576c3ecb22426f8e57847382917acf", "sha1_check(\"abcd\")", kNoCause);
- expect("da39a3ee5e6b4b0d3255bfef95601890afd80709", "sha1_check(\"\")", kNoCause);
-
- // sha1_check(data, sha1_hex, [sha1_hex, ...]) returns the matched SHA-1.
- expect("81fe8bfe87576c3ecb22426f8e57847382917acf",
- "sha1_check(\"abcd\", \"81fe8bfe87576c3ecb22426f8e57847382917acf\")",
- kNoCause);
-
- expect("81fe8bfe87576c3ecb22426f8e57847382917acf",
- "sha1_check(\"abcd\", \"wrong_sha1\", \"81fe8bfe87576c3ecb22426f8e57847382917acf\")",
- kNoCause);
-
- // Or "" if there's no match.
- expect("",
- "sha1_check(\"abcd\", \"wrong_sha1\")",
- kNoCause);
-
- expect("",
- "sha1_check(\"abcd\", \"wrong_sha1\", \"wrong_sha2\")",
- kNoCause);
-
- // sha1_check() expects at least one argument.
- expect(nullptr, "sha1_check()", kArgsParsingFailure);
-}
-
TEST_F(UpdaterTest, apply_patch_check) {
// Zero-argument is not valid.
expect(nullptr, "apply_patch_check()", kArgsParsingFailure);
@@ -355,12 +349,13 @@
script = "package_extract_file(\"a.txt\", \"/dev/full\")";
expect("", script.c_str(), kNoCause, &updater_info);
- // One-argument version.
- script = "sha1_check(package_extract_file(\"a.txt\"))";
- expect(kATxtSha1Sum.c_str(), script.c_str(), kNoCause, &updater_info);
+ // One-argument version. package_extract_file() gives a VAL_BLOB, which needs to be converted to
+ // VAL_STRING for equality test.
+ script = "blob_to_string(package_extract_file(\"a.txt\")) == \"" + kATxtContents + "\"";
+ expect("t", script.c_str(), kNoCause, &updater_info);
- script = "sha1_check(package_extract_file(\"b.txt\"))";
- expect(kBTxtSha1Sum.c_str(), script.c_str(), kNoCause, &updater_info);
+ script = "blob_to_string(package_extract_file(\"b.txt\")) == \"" + kBTxtContents + "\"";
+ expect("t", script.c_str(), kNoCause, &updater_info);
// Missing entry. The one-argument version aborts the evaluation.
script = "package_extract_file(\"doesntexist\")";
diff --git a/updater/install.cpp b/updater/install.cpp
index 1ac19ce..9d108e0 100644
--- a/updater/install.cpp
+++ b/updater/install.cpp
@@ -262,9 +262,7 @@
// apply_patch_check(filename, [sha1, ...])
// Returns true if the contents of filename or the temporary copy in the cache partition (if
// present) have a SHA-1 checksum equal to one of the given sha1 values. sha1 values are
-// specified as 40 hex digits. This function differs from sha1_check(read_file(filename),
-// sha1 [, ...]) in that it knows to check the cache partition copy, so apply_patch_check() will
-// succeed even if the file was corrupted by an interrupted apply_patch() update.
+// specified as 40 hex digits.
Value* ApplyPatchCheckFn(const char* name, State* state,
const std::vector<std::unique_ptr<Expr>>& argv) {
if (argv.size() < 1) {
@@ -287,51 +285,6 @@
return StringValue(result == 0 ? "t" : "");
}
-// sha1_check(data)
-// to return the sha1 of the data (given in the format returned by
-// read_file).
-//
-// sha1_check(data, sha1_hex, [sha1_hex, ...])
-// returns the sha1 of the file if it matches any of the hex
-// strings passed, or "" if it does not equal any of them.
-//
-Value* Sha1CheckFn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) {
- if (argv.size() < 1) {
- return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name);
- }
-
- std::vector<std::unique_ptr<Value>> args;
- if (!ReadValueArgs(state, argv, &args)) {
- return nullptr;
- }
-
- if (args[0]->type == VAL_INVALID) {
- return StringValue("");
- }
- uint8_t digest[SHA_DIGEST_LENGTH];
- SHA1(reinterpret_cast<const uint8_t*>(args[0]->data.c_str()), args[0]->data.size(), digest);
-
- if (argv.size() == 1) {
- return StringValue(print_sha1(digest));
- }
-
- for (size_t i = 1; i < argv.size(); ++i) {
- uint8_t arg_digest[SHA_DIGEST_LENGTH];
- if (args[i]->type != VAL_STRING) {
- LOG(ERROR) << name << "(): arg " << i << " is not a string; skipping";
- } else if (ParseSha1(args[i]->data, arg_digest) != 0) {
- // Warn about bad args and skip them.
- LOG(ERROR) << name << "(): error parsing \"" << args[i]->data << "\" as sha-1; skipping";
- } else if (memcmp(digest, arg_digest, SHA_DIGEST_LENGTH) == 0) {
- // Found a match.
- return args[i].release();
- }
- }
-
- // Didn't match any of the hex strings; return false.
- return StringValue("");
-}
-
// mount(fs_type, partition_type, location, mount_point)
// mount(fs_type, partition_type, location, mount_point, mount_options)
@@ -1027,7 +980,6 @@
RegisterFunction("wipe_block_device", WipeBlockDeviceFn);
RegisterFunction("read_file", ReadFileFn);
- RegisterFunction("sha1_check", Sha1CheckFn);
RegisterFunction("write_value", WriteValueFn);
RegisterFunction("wipe_cache", WipeCacheFn);