def test_obfuscate_no_global_recursive(self):
node = es5(
dedent("""
(function named(param1, param2) {
param1 = param1 * param2 - param2;
param2--;
if (param2 < 0) {
return named(param1, param2);
}
return param1;
})();
""").strip())
self.assertEqual(
dedent("""
(function named(b, a) {
b = b * a - a;
a--;
if (a < 0) {
return named(b, a);
}
return b;
})();
""").lstrip(), ''.join(c.text for c in Unparser(rules=(
default_rules,
indent(indent_str=' '),
obfuscate(obfuscate_globals=False),
))(node)))
def test_obfuscate_try_catch_shadowed(self):
node = es5(
dedent("""
var value = 1;
try {
console.log(value);
throw Error("welp");
}
catch (value) {
console.log(value);
}
""").strip())
self.assertEqual(
dedent("""
var a = 1;
try {
console.log(a);
throw Error("welp");
}
catch (a) {
console.log(a);
}
""").lstrip(), ''.join(c.text for c in Unparser(rules=(
default_rules,
indent(indent_str=' '),
obfuscate(obfuscate_globals=True),
))(node)))
def test_functions_in_lists(self):
node = es5(
dedent("""
(function main(root) {
root.exports = [
(function(module, exports) {
module.exports = {};
}),
(function(module, exports) {
exports.fun = 1;
}),
];
})(this);
""").strip())
self.assertEqual(
dedent("""
(function main(a) {
a.exports = [(function(a, b) {
a.exports = {};
}), (function(b, a) {
a.fun = 1;
})];
})(this);
""").lstrip(), ''.join(c.text for c in Unparser(rules=(
default_rules,
indent(indent_str=' '),
obfuscate(),
))(node)))
def test_obfuscate_try_catch_scope_inside_catch(self):
node = es5(
dedent("""
var value = 100;
(function() {
var dummy = 0;
console.log(value);
value = 1;
try {
console.log(value);
throw Error("welp");
}
catch (exc) {
var value = 2;
var welped = value;
welped = 'welped';
(function() {
console.log(exc);
console.log(value);
console.log(welped);
})();
}
value = 3;
})();
console.log(value);
""").strip())
# note that dummy -> c because exc is a local, not counted in
# the priority at the parent scope.
self.assertEqual(
dedent("""
var value = 100;
(function() {
var c = 0;
console.log(a);
a = 1;
try {
console.log(a);
throw Error("welp");
}
catch (d) {
var a = 2;
var b = a;
b = 'welped';
(function() {
console.log(d);
console.log(a);
console.log(b);
})();
}
a = 3;
})();
console.log(value);
""").lstrip(), ''.join(c.text for c in Unparser(rules=(
default_rules,
indent(indent_str=' '),
obfuscate(),
))(node)))
def test_obfuscate_globals(self):
node = es5(
dedent("""
var a_global = 1;
(function(a_param) {
var a_local = 1;
a_local = a_param;
a_local = a_global;
})();
""").strip())
self.assertEqual(
dedent("""
var a_global = 1;
(function(b) {
var a = 1;
a = b;
a = a_global;
})();
""").lstrip(), ''.join(c.text for c in Unparser(rules=(
default_rules,
indent(indent_str=' '),
obfuscate(obfuscate_globals=False),
))(node)))
self.assertEqual(
dedent("""
var a = 1;
(function(c) {
var b = 1;
b = c;
b = a;
})();
""").lstrip(), ''.join(c.text for c in Unparser(rules=(
default_rules,
indent(indent_str=' '),
obfuscate(obfuscate_globals=True),
))(node)))
def test_obfuscate_no_shadow_funcname_not_mapped(self):
node = es5(
dedent("""
function a(arg) {
}
""").strip())
self.assertEqual(
dedent("""
function a(b) {
}
""").lstrip(), ''.join(c.text for c in Unparser(rules=(
default_rules,
indent(indent_str=' '),
obfuscate(obfuscate_globals=False, shadow_funcname=False),
))(node)))
def test_multiple_reuse(self):
tree = es5(
dedent("""
(function() {
var foo = 1;
var bar = 2;
bar = 3;
})(this);
""").strip())
obfuscator_unparser = Unparser(rules=(
minimum_rules,
obfuscate(),
))
self.assertEqual(
''.join(c.text for c in obfuscator_unparser(tree)),
''.join(c.text for c in obfuscator_unparser(tree)),
)
def test_obfuscate_try_catch_vardeclare_inside_catch(self):
node = es5(
dedent("""
var value = 100;
(function() {
console.log(value);
value = 1;
try {
console.log(value);
throw Error("welp");
}
catch (exc) {
var value = 2;
console.log(value);
}
value = 3;
})();
console.log(value);
""").strip())
self.assertEqual(
dedent("""
var value = 100;
(function() {
console.log(a);
a = 1;
try {
console.log(a);
throw Error("welp");
}
catch (b) {
var a = 2;
console.log(a);
}
a = 3;
})();
console.log(value);
""").lstrip(), ''.join(c.text for c in Unparser(rules=(
default_rules,
indent(indent_str=' '),
obfuscate(),
))(node)))
def test_no_shadow_children(self):
node = es5(
dedent("""
var some_value = 1;
(function(param) {
a.is_not_declared_in_this_file(param);
})();
""").strip())
self.assertEqual(
dedent("""
var b = 1;
(function(b) {
a.is_not_declared_in_this_file(b);
})();
""").lstrip(), ''.join(c.text for c in Unparser(rules=(
default_rules,
indent(indent_str=' '),
obfuscate(obfuscate_globals=True),
))(node)))
def test_obfuscate_skip(self):
node = es5(
dedent("""
(function(a_param) {
var a_local = a_param;
})();
""").strip())
self.assertEqual(
dedent("""
(function(c) {
var d = c;
})();
""").lstrip(), ''.join(c.text for c in Unparser(rules=(
default_rules,
indent(indent_str=' '),
obfuscate(reserved_keywords=(
'a',
'b',
)),
))(node)))
def test_obfuscate_try_catch_no_declare(self):
node = es5(
dedent("""
var value = 100;
(function() {
value = 1;
try {
console.log(value);
throw Error("welp");
}
catch (value) {
value = 0;
console.log(value);
}
console.log(value);
})();
console.log(value);
""").strip())
self.assertEqual(
dedent("""
var value = 100;
(function() {
value = 1;
try {
console.log(value);
throw Error("welp");
}
catch (a) {
a = 0;
console.log(a);
}
console.log(value);
})();
console.log(value);
""").lstrip(), ''.join(c.text for c in Unparser(rules=(
default_rules,
indent(indent_str=' '),
obfuscate(),
))(node)))
def test_no_shadow_parent_remapped(self):
node = es5(
dedent("""
var a = c;
(function(param) {
b.is_not_declared_in_this_file(a, param);
})(c);
""").strip())
# param can remap to c because the global 'c' not used in that
# scope.
self.assertEqual(
dedent("""
var a = c;
(function(c) {
b.is_not_declared_in_this_file(a, c);
})(c);
""").lstrip(), ''.join(c.text for c in Unparser(rules=(
default_rules,
indent(indent_str=' '),
obfuscate(obfuscate_globals=True),
))(node)))
def test_obfuscate_no_global_recursive_redeclared_no_shadow_funcname(self):
node = es5(
dedent("""
(function $() {
$();
(function $() {
var foo = 1;
})();
})();
""").strip())
self.assertEqual(
dedent("""
(function $() {
a();
(function a() {
var b = 1;
})();
})();
""").lstrip(), ''.join(c.text for c in Unparser(rules=(
default_rules,
indent(indent_str=' '),
obfuscate(obfuscate_globals=False, shadow_funcname=False),
))(node)))
def test_multi_scope(self):
node = es5(
dedent("""
(function(value) {
var parent = 1;
(function(value) {
var child = 2;
(function(value) {
var grandchild = 3;
(function(value) {
var greatgrandchild = 4;
(function(value) {
var result = 1;
// using greatgrandchild a lot to ensure priority
// mucking
console.log(parent);
console.log(greatgrandchild);
console.log(greatgrandchild * value);
console.log(greatgrandchild * parent);
console.log(greatgrandchild * greatgrandchild);
})(value);
})(value);
})(value);
})(value);
})(0);
""").strip())
# Note that grandchild and greatgrandchild never had any of
# their local variables referenced by any of their nested
# scopes, their values got shadowed in the greatgrandchild scope
# before both that and parent is used in the innermost scope.
# Also, note that since greatgrandchild stopped propagating the
# reference usage upwards, even though it has a lot more usage,
# it never will claim priority over the parent at the parent
# scope since parent got mapped to 'a' thus forcing
# greatgrandchild to map to 'b', the next lowest value symbol.
self.assertEqual(
dedent("""
(function(b) {
var a = 1;
(function(b) {
var c = 2;
(function(b) {
var c = 3;
(function(c) {
var b = 4;
(function(c) {
var d = 1;
console.log(a);
console.log(b);
console.log(b * c);
console.log(b * a);
console.log(b * b);
})(c);
})(b);
})(b);
})(b);
})(0);
""").lstrip(), ''.join(c.text for c in Unparser(rules=(
default_rules,
indent(indent_str=' '),
obfuscate(),
))(node)))
