diff options
| -rw-r--r-- | regcomp.c | 21 | ||||
| -rw-r--r-- | test/ruby/test_regexp.rb | 6 | ||||
| -rw-r--r-- | version.h | 2 |
3 files changed, 19 insertions, 10 deletions
@@ -1933,7 +1933,7 @@ noname_disable_map(Node** plink, GroupNumRemap* map, int* counter) } static int -renumber_node_backref(Node* node, GroupNumRemap* map) +renumber_node_backref(Node* node, GroupNumRemap* map, const int num_mem) { int i, pos, n, old_num; int *backs; @@ -1949,6 +1949,7 @@ renumber_node_backref(Node* node, GroupNumRemap* map) backs = bn->back_dynamic; for (i = 0, pos = 0; i < old_num; i++) { + if (backs[i] > num_mem) return ONIGERR_INVALID_BACKREF; n = map[backs[i]].new_val; if (n > 0) { backs[pos] = n; @@ -1961,7 +1962,7 @@ renumber_node_backref(Node* node, GroupNumRemap* map) } static int -renumber_by_map(Node* node, GroupNumRemap* map) +renumber_by_map(Node* node, GroupNumRemap* map, const int num_mem) { int r = 0; @@ -1969,28 +1970,30 @@ renumber_by_map(Node* node, GroupNumRemap* map) case NT_LIST: case NT_ALT: do { - r = renumber_by_map(NCAR(node), map); + r = renumber_by_map(NCAR(node), map, num_mem); } while (r == 0 && IS_NOT_NULL(node = NCDR(node))); break; case NT_QTFR: - r = renumber_by_map(NQTFR(node)->target, map); + r = renumber_by_map(NQTFR(node)->target, map, num_mem); break; case NT_ENCLOSE: { EncloseNode* en = NENCLOSE(node); - if (en->type == ENCLOSE_CONDITION) + if (en->type == ENCLOSE_CONDITION) { + if (en->regnum > num_mem) return ONIGERR_INVALID_BACKREF; en->regnum = map[en->regnum].new_val; - r = renumber_by_map(en->target, map); + } + r = renumber_by_map(en->target, map, num_mem); } break; case NT_BREF: - r = renumber_node_backref(node, map); + r = renumber_node_backref(node, map, num_mem); break; case NT_ANCHOR: if (NANCHOR(node)->target) - r = renumber_by_map(NANCHOR(node)->target, map); + r = renumber_by_map(NANCHOR(node)->target, map, num_mem); break; default: @@ -2052,7 +2055,7 @@ disable_noname_group_capture(Node** root, regex_t* reg, ScanEnv* env) r = noname_disable_map(root, map, &counter); if (r != 0) return r; - r = renumber_by_map(*root, map); + r = renumber_by_map(*root, map, env->num_mem); if (r != 0) return r; for (i = 1, pos = 1; i <= env->num_mem; i++) { diff --git a/test/ruby/test_regexp.rb b/test/ruby/test_regexp.rb index 495c9de919..a9e0cdff0e 100644 --- a/test/ruby/test_regexp.rb +++ b/test/ruby/test_regexp.rb @@ -1312,6 +1312,12 @@ class TestRegexp < Test::Unit::TestCase assert_nil($1) end + def test_backref_overrun + assert_raise_with_message(SyntaxError, /invalid backref number/) do + eval(%["".match(/(())(?<X>)((?(90000)))/)]) + end + end + # This assertion is for porting x2() tests in testpy.py of Onigmo. def assert_match_at(re, str, positions, msg = nil) re = Regexp.new(re) unless re.is_a?(Regexp) @@ -12,7 +12,7 @@ # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR #define RUBY_VERSION_TEENY 2 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR -#define RUBY_PATCHLEVEL 104 +#define RUBY_PATCHLEVEL 105 #define RUBY_RELEASE_YEAR 2021 #define RUBY_RELEASE_MONTH 7 |