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| author | Wladimir J. van der Laan <laanwj@gmail.com> | 2015-06-03 09:42:03 +0200 |
|---|---|---|
| committer | Wladimir J. van der Laan <laanwj@gmail.com> | 2015-06-03 15:16:37 +0200 |
| commit | 59015965485e08f53dad126e7393791e1df0825e (patch) | |
| tree | de3d77856ba037b2dcc6646bc9eba68ab9786e28 | |
| parent | 6145fdf47e7c4e222c6d5b5abad2cd320ddc2648 (diff) | |
| download | bitcoin-59015965485e08f53dad126e7393791e1df0825e.tar.xz | |
json: fail read_string if string contains trailing garbage
Change `read_string` to fail when not the entire input has been
consumed. This avoids unexpected, even dangerous behavior (fixes #6223).
The new JSON parser adapted in #6121 also solves this problem so in
master this is a temporary fix, but should be backported to older releases.
Also adds tests for the new behavior.
Github-Pull: #6226
Rebased-From: 4e157fc60dae5ca69933ea4c1585a2a078b4d957
| -rw-r--r-- | src/json/json_spirit_reader_template.h | 6 | ||||
| -rw-r--r-- | src/test/rpc_tests.cpp | 18 |
2 files changed, 21 insertions, 3 deletions
diff --git a/src/json/json_spirit_reader_template.h b/src/json/json_spirit_reader_template.h index 46f5892f62..47e3c1ca84 100644 --- a/src/json/json_spirit_reader_template.h +++ b/src/json/json_spirit_reader_template.h @@ -521,12 +521,11 @@ namespace json_spirit const spirit_namespace::parse_info< Iter_type > info = spirit_namespace::parse( begin, end, - Json_grammer< Value_type, Iter_type >( semantic_actions ), + Json_grammer< Value_type, Iter_type >( semantic_actions ) >> spirit_namespace::end_p, spirit_namespace::space_p ); if( !info.hit ) { - assert( false ); // in theory exception should already have been thrown throw_error( info.stop, "error" ); } @@ -570,7 +569,8 @@ namespace json_spirit { typename String_type::const_iterator begin = s.begin(); - return read_range( begin, s.end(), value ); + bool success = read_range( begin, s.end(), value ); + return success && begin == s.end(); } template< class Istream_type > diff --git a/src/test/rpc_tests.cpp b/src/test/rpc_tests.cpp index 45cb551d04..5899671d2f 100644 --- a/src/test/rpc_tests.cpp +++ b/src/test/rpc_tests.cpp @@ -140,6 +140,24 @@ BOOST_AUTO_TEST_CASE(rpc_parse_monetary_values) BOOST_CHECK_EQUAL(AmountFromValue(ValueFromString("20999999.99999999")), 2099999999999999LL); } +BOOST_AUTO_TEST_CASE(json_parse_errors) +{ + Value value; + // Valid + BOOST_CHECK_EQUAL(read_string(std::string("1.0"), value), true); + // Valid, with trailing whitespace + BOOST_CHECK_EQUAL(read_string(std::string("1.0 "), value), true); + // Invalid, initial garbage + BOOST_CHECK_EQUAL(read_string(std::string("[1.0"), value), false); + BOOST_CHECK_EQUAL(read_string(std::string("a1.0"), value), false); + // Invalid, trailing garbage + BOOST_CHECK_EQUAL(read_string(std::string("1.0sds"), value), false); + BOOST_CHECK_EQUAL(read_string(std::string("1.0]"), value), false); + // BTC addresses should fail parsing + BOOST_CHECK_EQUAL(read_string(std::string("175tWpb8K1S7NmH4Zx6rewF9WQrcZv245W"), value), false); + BOOST_CHECK_EQUAL(read_string(std::string("3J98t1WpEZ73CNmQviecrnyiWrnqRhWNL"), value), false); +} + BOOST_AUTO_TEST_CASE(rpc_boostasiotocnetaddr) { // Check IPv4 addresses |