Initial Commit

.gitignore

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+ast_parser/test/.tmp

README.md

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+# Gazprea Fuzzer
+
+This is a hecking fuzzer. It does the thing.
+
+## Requirements
+- Python 3.11
+- NumPy
+
+## Usage
+
+```
+usage: python -m gazprea_fuzzer.py [-h] [-b SIZE] [--seed SEED] <config_file>
+
+Procedurally generate a test case for Gazprea
+
+positional arguments:
+    config            path to your configuration file
+    name              name of the test case to generate (name.in, name.ins, name.out)
+    
+optional arguments:
+    -h, --help        show the help message and exit
+    -b, --batch SIZE  generate SIZE cases (fuzzer/input/nameX.in, /instream/..., /outputs/...)
+    --seed SEED       rng seed
+```
+
+## Configuration
+
+See the [default config file](config.yaml) for all possible options and their default values
+

ast_generator/ast_generator.py

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+import json
+import random
+
+from fuzzingbook.Grammars import is_valid_grammar, convert_ebnf_grammar, Grammar
+from isla.solver import ISLaSolver
+
+# from gazprea_ast_grammar import GAZPREA_TOP_LEVEL
+# import gazprea_ast_grammar
+from ast_parser.ast_parser import AstParser
+
+import xml.etree.ElementTree as ET
+
+GAZ_VOID_TYPE = 'void'
+
+VOID_TYPE = 'void'
+GAZ_BLOCK_TAG = 'block'
+GAZ_RHS_TAG = 'lhs'
+GAZ_RHS_TAG = 'rhs'
+GAZ_RETURN_KEY = "return_type"
+VAR_NAMES = ['alsdjf', 'asldfjlks', 'qowiuut', 'qoiur', 'qwioue', 'qoyiyut', 'llkjfg', 'kdjkdjf', 'asdjkfeey',
+             'jdhjfjheee']
+ROUTINE_NAMES = ['bees', 'beans', 'hell']
+GAZ_INT_OPS = ['*', '+', '-', '/', '%']
+GAZ_TYPES = ['int']
+GAZ_FLOAT_KEY = 'float'
+GAZ_INT_KEY = 'int'
+GAZ_FUNCTION_TAG = 'function'
+GAZ_PROCEDURE_TAG = 'procedure'
+GAZ_OPERATOR_TAG = "operator"
+GAZ_LIT_TAG = "literal"
+GAZ_VAR_TAG = "variable"
+GAZ_OP_KEY = "op"
+GAZ_NAME_KEY = "name"
+GAZ_QUALIFIER_KEY = "mut"
+GAZ_VAL_KEY = "value"
+GAZ_TY_KEY = "type"
+ANY_TYPE = "any"
+
+
+def find_variables(AST):
+    pass
+
+
+def set_variables(variable_names, variables):
+    pass
+
+
+def set_routines(routine_names, routines):
+    pass
+
+
+def type_check(AST, routines, variables):
+    pass
+
+
+class AstGenerator:
+
+    def __init__(self, grammar: Grammar, params: json):
+        self.void_probability = 20
+        self.int_low = -2 ** 30
+        self.int_high = 2 ** 32 - 1
+        self.valid_var_names = VAR_NAMES
+        self.max_number_of_vars = 10
+        self.valid_routine_names = ROUTINE_NAMES
+        self.max_number_of_routines = 3
+        self.qualifier_probability = False
+        self.var_qualifier_probability = None
+        self.const_qualifier_probability = None
+        for key, value in params.items():
+            setattr(self, key, value)
+
+        if self.var_qualifier_probability is not None and self.const_qualifier_probability is not None:
+            self.qualifier_probability = True
+        self.ast_list = []
+        self.functions = []
+        assert (is_valid_grammar(grammar))
+        self.grammar = grammar
+
+    def fix_missing_locations(self, AST: str) -> str:
+        variable_names = self.get_variable_list()
+        routine_names = self.get_routine_list()
+
+        routines = find_routines(AST)
+        variables = find_variables(AST)
+
+        set_variables(variable_names, variables)  # insert types and values
+        set_routines(routine_names, routines)  # insert types
+        type_check(AST, routines, variables)
+
+
+    def test_samples(self, grammar: Grammar, iterations: int = 10, start_symbol=None, log: bool = True):
+        g = convert_ebnf_grammar(grammar)
+        solver = ISLaSolver(g, start_symbol=start_symbol, max_number_free_instantiations=iterations)
+        for i in range(iterations):
+            tree_str = str(solver.solve())
+            print(tree_str)
+            # tree = eval(tree_str)
+            # print(tree)
+            # tree = self.fix_missing_locations(tree)
+            # ast = AstParser(tree, from_xml=True)
+            # if log:
+            #     ast.unparse()
+            #     code = ast.input
+            #     print(f'{code:40} # {tree_str}')
+
+    def get_variable_list(self):
+        pass
+
+    def populate_operator(self, operator: ET.Element, op, type):
+        operator.set(GAZ_OP_KEY, op)
+        operator.set(GAZ_TY_KEY, type)
+        for node in operator:
+            node = self.populate(node, type)
+
+        return operator
+
+    def populate_stream(self, stream: ET.Element, type):
+        stream.set(GAZ_TY_KEY, type)
+        for node in stream:
+            node = self.populate(node, ANY_TYPE)
+
+        return stream
+
+    def populate_literal(self, literal: ET.Element, type, value):
+        literal.set(GAZ_TY_KEY, type)
+        literal.set(GAZ_VAL_KEY, value)
+        return literal
+
+    def populate_variable(self, variable: ET.Element, qualifier, type, name):
+        variable.set(GAZ_QUALIFIER_KEY, qualifier)
+        variable.set(GAZ_TY_KEY, type)
+        variable.set(GAZ_NAME_KEY, name)
+        return variable
+
+    def populate_routine(self, routine: ET.Element, type, name):
+        routine.set(GAZ_RETURN_KEY, type)
+        if routine.get("name") != "main":
+            routine.set(GAZ_NAME_KEY, name)
+
+        if routine.tag == GAZ_PROCEDURE_TAG and type != VOID_TYPE:
+            routine.find("block").append(self.generate_return(type))
+
+        for block in routine:
+            for node in block:
+                if node.tag != "return":
+                    node =self.populate(node, ANY_TYPE)
+                else:
+                    node.set("type", type)
+
+        return routine
+
+    def populate_block(self, element):
+        for node in element:
+            return self.populate(node, ANY_TYPE)
+
+    def populate_xhs(self, side: ET.Element, type):
+        for node in side:
+            return self.populate(node, type)
+
+    def populate_ast(self, ast: ET.Element):
+        populated = self.generate_block()
+        for node in ast:
+            populated.append(self.populate(node, ANY_TYPE))
+
+        return populated
+
+    # def populate_assignment(self, name, type):
+
+    def populate(self, element: ET.Element, type: str):
+        if type == ANY_TYPE:
+            type = GAZ_TYPES[random.randint(0, len(GAZ_TYPES) - 1)]
+
+        if element.tag == GAZ_VAR_TAG:
+            return self.populate_variable(element, self.get_qualifier(), type, self.get_name(GAZ_VAR_TAG))
+        elif element.tag == GAZ_LIT_TAG:
+            return self.populate_literal(element, type, self.get_value(type))
+        elif element.tag == GAZ_OPERATOR_TAG:
+            return self.populate_operator(element, self.get_op(type), type)
+        elif element.tag == GAZ_FUNCTION_TAG:
+            return self.populate_routine(element, type, self.get_name(element.tag))
+        elif element.tag == GAZ_PROCEDURE_TAG:
+            type = self.void(type)
+            return self.populate_routine(element, type, self.get_name(element.tag))
+        elif element.tag in [GAZ_RHS_TAG, GAZ_RHS_TAG]:
+            return self.populate_xhs(element, type)
+        elif element.tag == GAZ_BLOCK_TAG:
+            return self.populate_block(element)
+
+    def get_qualifier(self):
+        var_weight: int = 80
+        const_weight: int = 20
+        if self.qualifier_probability:
+            var_weight = self.var_qualifier_probability
+            const_weight = self.const_qualifier_probability
+
+            a = random.randint(0, var_weight + const_weight)
+            if a in range(0, var_weight):
+                return 'var'
+            elif a in range(var_weight, var_weight + const_weight):
+                return 'const'
+            else:
+                raise ValueError("Internal Error, please report the stack trace to me")
+
+    def get_value(self, type):
+        if type == GAZ_INT_KEY:
+            return random.randint(self.int_low, self.int_high)
+        else:
+            raise TypeError("Unimplemented generator for type: " + type)
+
+    def get_name(self, name_type):
+        if name_type == GAZ_VAR_TAG:
+            return VAR_NAMES[random.randint(0, self.max_number_of_vars - 1)]
+        elif name_type in [GAZ_PROCEDURE_TAG, GAZ_FUNCTION_TAG]:
+            r_name = ROUTINE_NAMES[random.randint(0, len(ROUTINE_NAMES) - 1)]
+            self.functions.append(r_name)
+            return r_name
+
+    def get_op(self, type):
+        if type == GAZ_INT_KEY:
+            # TODO make this a parameter for peiple to change
+            return GAZ_INT_OPS[random.randint(0, len(GAZ_INT_OPS) - 1)]
+        else:
+            raise TypeError("Unimplemented type: " + type)
+
+    def _generate(self, element: str or None) -> ET.Element:
+        initial_grammar = convert_ebnf_grammar(self.grammar)
+        solver = ISLaSolver(initial_grammar, start_symbol=element)
+        ast_str = str(solver.solve())
+
+        print(ast_str)
+        elem = ET.fromstring(ast_str)
+        return elem
+
+    def generate_ast(self) -> ET.Element:
+        return self._generate(None)
+
+
+    def generate_return(self, type) -> ET.Element:
+        elem = self._generate('<return>')
+        elem.set(GAZ_TY_KEY, type)
+
+        return elem
+
+    def generate_literal(self) -> ET.Element:
+        return self._generate('<literal>')
+
+    def generate_variable(self) -> ET.Element:
+        return self._generate('<variable>')
+
+    def generate_operator(self) -> ET.Element:
+        return self._generate('<operator>')
+
+    def generate_block(self) -> ET.Element:
+        return self._generate('<block>')
+
+    def generate_routine(self) -> ET.Element:
+        return self._generate('<routine>')
+
+    def generate_main_routine(self) -> ET.Element:
+        return self._generate('<main_routine>')
+
+    def generate_declaration(self) -> ET.Element:
+        return self._generate('<declaration>')
+
+    def generate_stream(self) -> ET.Element:
+        return self._generate('<stream>')
+
+    def void(self, type):
+        b = random.randint(0, 100)
+        if b < self.void_probability:
+            return GAZ_VOID_TYPE
+        else:
+            return type
+
+
+
+class AstElement:
+
+    def __init__(self, xml: ET.Element):
+        pass
+
+
+class RoutineCall(AstElement):
+
+    def __init__(self, xml: ET.Element, dependents=None, type=None):
+        """
+        @brief initialise a routine call object
+        :param xml:
+        :param dependents:
+        """
+        super().__init__(xml)
+        if dependents is None:
+            dependents = []
+        else:
+            self.dependents = dependents
+        self.xml = xml
+        self.type = type
+
+
+class Operator(AstElement):
+
+    def __init__(self, xml: ET.Element, params: json):
+        super().__init__(xml)
+        for key, value in params.items():
+            setattr(self, key, value)
+
+
+def find_routines(AST: str):
+    """
+    @brief find all of the routine and call elements in the ast
+
+    @param AST: the AST to analyse
+    @return the list of routine elements
+    """
+    xml = ET.fromstring(AST)
+    result = list[RoutineCall]
+    for node in xml:
+        if node.tag in [GAZ_PROCEDURE_TAG, GAZ_FUNCTION_TAG]:
+            routine = RoutineCall(node)
+            result.append(routine)
+
+
+if __name__ == '__main__':
+    pass
+    # ast_gen = AstGenerator(GAZPREA_TOP_LEVEL, json.loads("{}"))
+    # out: ET.Element = ast_gen.generate_return("int")
+    # print(out)
+
+
+#     gen = AstGenerator("{}")
+#     assert is_valid_grammar(gazprea_ast_grammar.GAZPREA_TOP_LEVEL)
+#
+#     gen.test_samples(gazprea_ast_grammar.GAZPREA_TOP_LEVEL, iterations=100)
+#
+#     initial_grammar = convert_ebnf_grammar(gazprea_ast_grammar.GAZPREA_TOP_LEVEL)
+#     solver = ISLaSolver(initial_grammar)
+#     constants_tree_str = str(solver.solve())
+#     print(constants_tree_str)

ast_generator/gazprea_ast_grammar.py

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+from fuzzingbook.Grammars import Grammar, is_valid_grammar, convert_ebnf_grammar
+from isla.solver import ISLaSolver
+
+GAZPREA_TOP_LEVEL: Grammar = {
+    # Top level elements
+    '<start>': ['<topBlock>'],
+    '<topBlock>': ['<XML_OPEN_TAG>block<XML_CLOSE_TAG><routine_list><main_routine><routine_list><XML_OPEN_SLASH>block<XML_CLOSE_TAG>'],
+    # TODO constants
+
+    # Routines
+    '<routine>': ['<function>', '<procedure>'],  # TODO forward_declaration
+    '<function>': [
+        '<XML_OPEN_TAG>function name="_NAME_" return_type="_TYPE_"  args="_ARGS_"<XML_CLOSE_TAG><return_block><XML_OPEN_SLASH>function<XML_CLOSE_TAG>'],
+    '<procedure>': [
+        '<XML_OPEN_TAG>procedure name="_NAME_" return_type="_TYPE_"  args="_ARGS_"<XML_CLOSE_TAG><block><XML_OPEN_SLASH>procedure<XML_CLOSE_TAG>'],
+    '<main_routine>': [
+        '<XML_OPEN_TAG>procedure name="main" return_type="int"  args="()"<XML_CLOSE_TAG><return_block><XML_OPEN_SLASH>procedure<XML_CLOSE_TAG>'],
+    '<routine_list>': ['<routine><routine_list><routine>', '<routine>'],
+
+    # Blocks
+    '<block>': ['<XML_OPEN_TAG>block<XML_CLOSE_TAG><statement_list><XML_OPEN_SLASH>block<XML_CLOSE_TAG>'],
+    '<return_block>': ['<XML_OPEN_TAG>block<XML_CLOSE_TAG><statement_list><return><XML_OPEN_SLASH>block<XML_CLOSE_TAG>'],
+    '<statement>': [
+        '<declaration>',
+        '<stream>',
+        # '<call>',
+        # '<return>',  # TODO if/else, loop
+    ],
+    '<statement_list>': ['<statement><statement_list><statement>', '<statement>'],
+
+    # Things that belong on their own lines
+    '<declaration>': ['<XML_OPEN_TAG>declaration<XML_CLOSE_TAG><variable><rhs><XML_OPEN_SLASH>declaration<XML_CLOSE_TAG>'],
+    '<stream>': ['<out_stream>'], #, '<in_stream>'],
+    '<return>': ['<XML_OPEN_TAG>return<XML_CLOSE_TAG><has_value><XML_OPEN_SLASH>return<XML_CLOSE_TAG>'],
+
+    '<out_stream>': ['<XML_OPEN_TAG>stream type="std_output"<XML_CLOSE_TAG><has_value><XML_OPEN_SLASH>stream<XML_CLOSE_TAG>'],
+    # '<in_stream>': ['<XML_OPEN_TAG>stream type="std_input"<XML_CLOSE_TAG><has_value><XML_OPEN_SLASH>stream<XML_CLOSE_TAG>'],
+
+    # Things that are part of lines
+    '<has_value>': ['<variable>', '<literal>', '<operator>'],
+    '<lhs>': ['<XML_OPEN_TAG>lhs<XML_CLOSE_TAG><has_value><XML_OPEN_SLASH>lhs<XML_CLOSE_TAG>'],
+    '<rhs>': ['<XML_OPEN_TAG>rhs<XML_CLOSE_TAG><has_value><XML_OPEN_SLASH>rhs<XML_CLOSE_TAG>'],
+
+    # Things that have values
+    '<operator>': ['<XML_OPEN_TAG>operator<XML_CLOSE_TAG><lhs><rhs><XML_OPEN_SLASH>operator<XML_CLOSE_TAG>'],
+    '<variable>': ['<XML_OPEN_TAG>variable mut="_MODIFIER_" type="_TYPE_" name="_NAME_"<XML_SLASH_TAG>'],
+    '<literal>': ['<XML_OPEN_TAG>literal type="_TYPE_" value="_VALUE_"<XML_SLASH_TAG>'],
+
+    # Helper rules
+    '<XML_OPEN_TAG>': ['<'],
+    '<XML_CLOSE_TAG>': ['>'],
+    '<XML_SLASH_TAG>': ['/>'],
+    '<XML_OPEN_SLASH>': ['</'],
+}
+
+if __name__ == "__main__":
+    assert is_valid_grammar(GAZPREA_TOP_LEVEL)
+
+    initial_grammar = convert_ebnf_grammar(GAZPREA_TOP_LEVEL)
+    solver = ISLaSolver(initial_grammar)
+    constants_tree_str = str(solver.solve())
+    print(constants_tree_str)

ast_generator/test/test_ast_generator.py

@@ -0,0 +1,193 @@
+import unittest
+import xml.etree.ElementTree as ET
+
+from ast_generator.ast_generator import *
+from ast_generator.gazprea_ast_grammar import *
+
+
+class TestGeneration(unittest.TestCase):
+
+    def setUp(self):
+        self.ast_gen = AstGenerator(GAZPREA_TOP_LEVEL, json.loads("{}"))
+
+    def test_generate_literal(self):
+        out: ET.Element = self.ast_gen.generate_literal()
+
+        self.assertIsNotNone(out.get("type"))
+
+    def test_generate_variable(self):
+        out: ET.Element = self.ast_gen.generate_variable()
+
+        self.assertIsNotNone(out.get("type"))
+        self.assertIsNotNone(out.get("name"))
+
+    def test_generate_declaration(self):
+        out: ET.Element = self.ast_gen.generate_declaration()
+
+        self.assertIsNotNone(out.find("variable"))
+        self.assertIsNotNone(out.find("rhs"))
+
+    def test_generate_operation(self):
+        out: ET.Element = self.ast_gen.generate_operator()
+
+        self.assertIsNotNone(out.find("lhs"))
+        self.assertIsNotNone(out.find("rhs"))
+
+    def test_generate_stream(self):
+        out: ET.Element = self.ast_gen.generate_stream()
+
+        self.assertIsNotNone(out.get("type"))
+
+    def test_generate_routine(self):
+        out: ET.Element = self.ast_gen.generate_routine()
+
+        self.assertIsNotNone(out.find("block"))
+
+    def test_generate_block(self):
+        out: ET.Element = self.ast_gen.generate_block()
+
+        self.assertIsNotNone(out)
+
+    def test_generate_main(self):
+        out: ET.Element = self.ast_gen.generate_main_routine()
+
+        self.assertIsNotNone(out)
+        self.assertEqual("main", out.get("name"))
+        self.assertEqual("int", out.get("return_type"))
+
+    def test_generate_ast(self):
+        out: ET.Element = self.ast_gen.generate_ast()
+
+        self.assertIsNotNone(out)
+
+        has_main = False
+        for child in out:
+            if child.get("name") == "main":
+                has_main = True
+                break
+
+        self.assertTrue(has_main)
+
+
+
+
+
+class TestRoutines(unittest.TestCase):
+
+    def setUp(self):
+        self.ast_gen = AstGenerator(GAZPREA_TOP_LEVEL, json.loads("{}"))
+
+    def test_populate_function(self):
+        with open("xml/routine_1.xml", 'r') as i:
+            input_elemnet = ET.fromstring(i.read())
+            out: ET.Element = self.ast_gen.populate_routine(input_elemnet, 'int', 'blahaj')
+
+            self.assertEqual('int', out.get("return_type"))
+            self.assertEqual('int', out.find("block").find("return").get("type"))
+
+    def test_generate_return(self):
+        out: ET.Element = self.ast_gen.generate_return("int")
+
+        self.assertEqual('int', out.get("type"))
+
+    def test_populate_typed_procedure(self):
+        with open("xml/routine_2.xml", 'r') as i:
+            input_elemnet = ET.fromstring(i.read())
+            out: ET.Element = self.ast_gen.populate_routine(input_elemnet, 'int', 'blahaj')
+
+            self.assertEqual('int', out.get("return_type"))
+            self.assertEqual('int', out.find("block").find("return").get("type"))
+
+    def test_populate_void_procedure(self):
+        with open("xml/routine_3.xml", 'r') as i:
+            input_elemnet = ET.fromstring(i.read())
+            out: ET.Element = self.ast_gen.populate_routine(input_elemnet, 'void', 'blahaj')
+
+            self.assertEqual('void', out.get("return_type"))
+            self.assertIsNone(out.find("block").find("return"))
+
+    def test_populate_void_procedure_with_return(self):
+        with open("xml/routine_2.xml", 'r') as i:
+            input_elemnet = ET.fromstring(i.read())
+            out: ET.Element = self.ast_gen.populate_routine(input_elemnet, 'void', 'blahaj')
+
+            self.assertEqual('void', out.get("return_type"))
+            self.assertIsNotNone(out.find("block").find("return").get("type"))
+            self.assertEqual('void', out.find("block").find("return").get("type"))
+
+
+    def test_populate_nonvoid_procedure_without_return(self):
+        with open("xml/routine_3.xml", 'r') as i:
+            input_elemnet = ET.fromstring(i.read())
+            out: ET.Element = self.ast_gen.populate_routine(input_elemnet, 'int', 'blahaj')
+
+            self.assertEqual('int', out.get("return_type"))
+            self.assertIsNotNone(out.find("block").find("return"))
+            self.assertEqual('int', out.find("block").find("return").get("type"))
+
+
+
+
+    # def test_populate_assignment(self):
+    #     pass
+    #
+    # def test_populate_top_block(self):
+    #     pass
+
+
+    # def test_populate_call(self):
+    #     pass
+
+
+
+
+class TestValues(unittest.TestCase):
+
+    def setUp(self):
+        self.ast_gen = AstGenerator(GAZPREA_TOP_LEVEL ,json.loads("{}"))
+
+    def test_populate_int(self):
+        with open("xml/literal_1.xml", 'r') as i:
+            input = i.read()
+            input_element = ET.fromstring(input)
+            out: ET.Element = self.ast_gen.populate_literal(input_element, "int", 42)
+
+            self.assertEqual("int", out.get("type"))
+            self.assertEqual("42", str(out.get("value")))
+
+    def test_populate_var(self):
+        with open("xml/variable_1.xml", 'r') as i:
+            input = i.read()
+            input_element = ET.fromstring(input)
+            out: ET.Element = self.ast_gen.populate_variable(input_element, "var", "float", "bean")
+
+            self.assertEqual("var", out.get("mut"))
+            self.assertEqual("float", out.get("type"))
+            self.assertEqual("bean", out.get("name"))
+
+    def test_populate_operator(self):
+        with open("xml/operator_1.xml", 'r') as i:
+            input = i.read()
+            input_element = ET.fromstring(input)
+            out: ET.Element = self.ast_gen.populate_operator(input_element, '*', 'int')
+            inner_var = out.find("type")
+
+            self.assertEqual("int", out.get("type"))
+            self.assertEqual("*", out.get("op"))
+            self.assertEqual("int", out.find("lhs").find("variable").get("type"))
+            self.assertEqual("int", out.find("rhs").find("literal").get("type"))
+
+    def test_populate_stream(self):
+        with open("xml/stream_1.xml", 'r') as i:
+            input_element = ET.fromstring(i.read())
+            out: ET.Element = self.ast_gen.populate_stream(input_element, "std_output")
+
+            self.assertEqual("std_output", out.get("type"))
+
+
+
+
+
+
+if __name__ == '__main__':
+    unittest.main()

ast_generator/test/test_generator_integration.py

@@ -0,0 +1,54 @@
+import unittest
+
+
+class TestGenConcatenation(unittest.TestCase):
+
+    def test_operator_nesting(self):
+        pass
+
+    def test_recursive_population_of_vars(self):
+        pass
+
+    def test_recursive_population_of_literals(self):
+        pass
+
+    def test_recursive_block_population(self):
+        pass
+
+    def test_routine_population(self):
+        pass
+
+    def test_full_population(self):
+        pass
+
+
+class TestAutoGeneration(unittest.TestCase):
+
+    def routines_call_routines(self):
+        pass
+
+    def test_routines_use_globals(self):
+        pass
+
+    def test_variable_reuse(self):
+        pass
+
+    def test_max_nesting_depth(self):
+        pass
+
+    def test_max_conditionals_loops(self):
+        pass # test the parameter limiting the maximum number of loops and conditionals per routine
+
+
+    def test_recursive_calls(self):
+        pass
+
+    def test_max_range_length(self):
+        pass
+
+
+
+
+
+if __name__ == '__main__':
+    unittest.main()

ast_generator/test/xml/literal_1.xml

@@ -0,0 +1 @@
+<literal type="%_TYPE_%" value="%_VALUE_%" />

ast_generator/test/xml/operator_1.xml

@@ -0,0 +1,8 @@
+<operator op="*" type="int">
+    <lhs>
+        <variable mut="var" type="int" name="a"/>
+    </lhs>
+    <rhs>
+        <literal type="int" value="42" />
+    </rhs>
+</operator>

ast_generator/test/xml/routine_1.xml

@@ -0,0 +1,33 @@
+    <function name="%_NAME_%" ref_name="_vvtmcyclqx" return_type="%_TYPE_%" args="()" >
+        <block>
+            <declaration>
+                <variable mut="var" type="int" name="b" ref_name="_tsfjvbryrsxdtso"/>
+                <rhs>
+                    <function name="art" ref_name="_hssvswwxpt" >
+                    </function>
+                </rhs>
+            </declaration>
+
+            <declaration>
+                <variable mut="var" type="int" name="a" ref_name="_pseeixbzvvhuygw"/>
+                <rhs>
+                    <literal type="int" value="1" />
+                </rhs>
+            </declaration>
+
+            <stream type="std_output">
+                <operator op="*" type="unset">
+                    <lhs>
+                        <variable mut="var" type="int" name="a" ref_name="_pseeixbzvvhuygw"/>
+                    </lhs>
+                    <rhs>
+                        <literal type="int" value="42" />
+                    </rhs>
+                </operator>
+            </stream>
+
+            <return>
+                <literal type="%_TYPE_%" value="%_VALUE_%" />
+            </return>
+        </block>
+    </function>

ast_generator/test/xml/routine_2.xml

@@ -0,0 +1,33 @@
+    <procedure name="%_NAME_%" ref_name="_vvtmcyclqx" return_type="%_TYPE_%" args="()" >
+        <block>
+            <declaration>
+                <variable mut="var" type="int" name="b" ref_name="_tsfjvbryrsxdtso"/>
+                <rhs>
+                    <function name="art" ref_name="_hssvswwxpt" >
+                    </function>
+                </rhs>
+            </declaration>
+
+            <declaration>
+                <variable mut="var" type="int" name="a" ref_name="_pseeixbzvvhuygw"/>
+                <rhs>
+                    <literal type="int" value="1" />
+                </rhs>
+            </declaration>
+
+            <stream type="std_output">
+                <operator op="*" type="unset">
+                    <lhs>
+                        <variable mut="var" type="int" name="a" ref_name="_pseeixbzvvhuygw"/>
+                    </lhs>
+                    <rhs>
+                        <literal type="int" value="42" />
+                    </rhs>
+                </operator>
+            </stream>
+
+            <return>
+                <literal type="%_TYPE_%" value="%_VALUE_%" />
+            </return>
+        </block>
+    </procedure>

ast_generator/test/xml/routine_3.xml

@@ -0,0 +1,29 @@
+    <procedure name="%_NAME_%" ref_name="_vvtmcyclqx" return_type="%_TYPE_%" args="()" >
+        <block>
+            <declaration>
+                <variable mut="var" type="int" name="b" ref_name="_tsfjvbryrsxdtso"/>
+                <rhs>
+                    <function name="art" ref_name="_hssvswwxpt" >
+                    </function>
+                </rhs>
+            </declaration>
+
+            <declaration>
+                <variable mut="var" type="int" name="a" ref_name="_pseeixbzvvhuygw"/>
+                <rhs>
+                    <literal type="int" value="1" />
+                </rhs>
+            </declaration>
+
+            <stream type="std_output">
+                <operator op="*" type="unset">
+                    <lhs>
+                        <variable mut="var" type="int" name="a" ref_name="_pseeixbzvvhuygw"/>
+                    </lhs>
+                    <rhs>
+                        <literal type="int" value="42" />
+                    </rhs>
+                </operator>
+            </stream>
+        </block>
+    </procedure>

ast_generator/test/xml/stream_1.xml

@@ -0,0 +1,10 @@
+<stream type="std_output">
+    <operator op="*" type="unset">
+        <lhs>
+            <variable mut="var" type="int" name="a" ref_name="_pseeixbzvvhuygw"/>
+        </lhs>
+        <rhs>
+            <literal type="int" value="42" />
+        </rhs>
+    </operator>
+</stream>

ast_generator/test/xml/variable_1.xml

@@ -0,0 +1 @@
+<variable mut="%_MUT_%" type="%_TYPE_%" name="%_NAME_%"/>

ast_parser/ast_parser.py

@@ -0,0 +1,165 @@
+import os
+import shutil
+import xml.etree.ElementTree as ET
+
+
+def to_gazprea_type(ty: str):
+    if ty == "int":
+        return "integer"
+    elif ty == "bool":
+        return "boolean"
+    elif ty == "string":
+        return "string"
+    elif ty == 'void':
+        return 'void'
+    else:
+        raise Exception("Unknown type: " + ty)
+
+
+class AstParser:
+    def __init__(self, input: str or ET.Element, from_xml: bool = False):
+        if from_xml:
+            self.xml = input
+            self.input = None
+        else:
+            self.input = input
+            self.xml = None
+
+        self.indentation = 0
+
+
+    def parse(self):
+        if os.path.isdir("/home/stormblessed/Code/gazprea_fuzzer_v0.2/ast_parser/test/.tmp"):
+            os.system("rm -rf /home/stormblessed/Code/gazprea_fuzzer_v0.2/ast_parser/test/.tmp")
+            os.mkdir("/home/stormblessed/Code/gazprea_fuzzer_v0.2/ast_parser/test/.tmp")
+        else:
+            os.mkdir("/home/stormblessed/Code/gazprea_fuzzer_v0.2/ast_parser/test/.tmp")
+        with open("/home/stormblessed/Code/gazprea_fuzzer_v0.2/ast_parser/test/.tmp/input.in", "x") as f:
+            f.write(self.input)
+        os.system("/home/stormblessed/.local/bin/gazc "
+                  "/home/stormblessed/Code/gazprea_fuzzer_v0.2/ast_parser/test/.tmp/input.in "
+                  "/home/stormblessed/Code/gazprea_fuzzer_v0.2/ast_parser/test/.tmp/output.out "
+                  "/home/stormblessed/Code/gazprea_fuzzer_v0.2/ast_parser/test/.tmp/xml.xml")
+        self.xml = ET.parse(".tmp/xml.xml")
+
+    def unparse(self):
+        """
+        @brief unparses the xml into valid gazprea code
+
+        :return: a string of valid gazprea code
+        """
+        self.input = ""
+        for node in self.xml:
+            self._unparse_node(node)
+
+    def _unparse_node(self, node):
+        if node.tag not in ["variable", "rhs", "lhs", "literal", "operator"]:
+            self.input += " " * self.indentation
+
+        if node.tag == "block":
+            self._block_unparse(node)
+        elif node.tag == "declaration":
+            self._declaration_unparse(node)
+        elif node.tag == "return":
+            self._return_unparse(node)
+        elif node.tag == "operator":
+            self._operator_unparse(node)
+        elif node.tag == "stream":
+            self._stream_unparse(node)
+        elif node.tag == "literal":
+            self._literal_unparse(node)
+        elif node.tag == "procedure" or node.tag == "function":
+            self._routine_unparse(node)
+        elif node.tag == "variable":
+            self._variable_unparse(node)
+        elif node.tag == "rhs" or node.tag == "lhs":
+            self._xhs_unparse(node)
+        elif node.tag == "literal":
+            self._literal_unparse(node)
+        else:
+            raise Exception("Unknown tag: " + node.tag)
+
+    def _block_unparse(self, node):
+        self.input += "{\n"
+        self.indentation += 4
+        for child in node:
+            self._unparse_node(child)
+        self.indentation -= 4
+        self.input += "}\n\n"
+
+    def _declaration_unparse(self, node):
+        variable = node.find("variable")
+        rhs = node.find("rhs")
+        self._variable_unparse(variable, True)
+        self.input += "="
+        self._unparse_node(rhs)
+        self.input += ";\n"
+
+    def _variable_unparse(self, node, is_declaration = False):
+        if is_declaration:
+            mut = node.get("mut")
+            type = to_gazprea_type(node.get("type"))
+            name = node.get("name")
+
+            self.input += "{} {} {} ".format(mut, type, name)
+        else:
+            self.input += " {} ".format(node.get("name"))
+
+    def _stream_unparse(self, node):
+        for child in node:
+            self._unparse_node(child)
+
+        self.input += "-> {};\n".format(node.get("type"))
+
+    def _literal_unparse(self, node):
+        self.input += " {} ".format(node.get("value"))
+
+    def _xhs_unparse(self, node):
+        for child in node:
+            self._unparse_node(child)
+
+    def _operator_unparse(self, node):
+        self._xhs_unparse(node.find("lhs"))
+        self.input += "{}".format(node.get("op"))
+        self._xhs_unparse(node.find("rhs"))
+
+    def _return_unparse(self, node):
+        self.input += "return"
+        for child in node:
+            self._unparse_node(child)
+        self.input += ";\n"
+
+    def _routine_unparse(self, node):
+        return_type = ""
+        if node.get("return_type") != "":
+            return_type = "returns " + to_gazprea_type(node.get("return_type"))
+
+        self.input += "{} {}{} {} ".format(
+            node.tag,
+            node.get("name"),
+            node.get("args"),
+            return_type,
+        )
+
+        for child in node:
+            self._unparse_node(child)
+
+        # self.input += "}\n\n" #blocks are already there
+
+
+if __name__ == '__main__':
+        input = """
+            function art() returns integer {
+                return 3;
+            }
+            procedure main() returns integer {
+                integer b = art();
+                integer a = 1;
+                a * 42 -> std_output;
+                return 0;
+            }
+        """
+
+        parser = AstParser(input)
+        parser.parse()
+

ast_parser/ast_solver.py

@@ -0,0 +1,13 @@
+import json
+
+
+class AstSolver:
+
+    def __init__(self, ast: str, params: str):
+        json.loads(params)
+        self.ast = ast
+        for key, value in json.loads(params).items():
+            setattr(self, key, value)
+
+    def fix_missing_locations(self, AST):
+        pass

ast_parser/params.json

@@ -0,0 +1,14 @@
+{
+  "num_vars": 10,
+  "num_globals": 10,
+  "num_functions": 2,
+  "num_procedures": 2,
+
+  "arith_ops": 60,
+  "compare_ops": 30,
+  "outstream_ops": 50,
+  "instream_ops": 10,
+
+  "largest_number": 900000,
+  "smallest_number": -900000
+}

ast_parser/test/input.in

@@ -0,0 +1,6 @@
+procedure main() returns integer {
+    var integer a = 1 ;
+     a * 42 -> std_output;
+    return 0 ;
+}
+

ast_parser/test/test.xml

@@ -0,0 +1,28 @@
+<block>
+    <procedure name="main" ref_name="_cteplvqbvd" return_type="int" args="()" >
+        <block>
+            <declaration>
+                <variable mut="var" type="int" name="a" ref_name="_bwagkmcgpmsgosa"/>
+                <rhs>
+                    <literal type="int" value="1" />
+                </rhs>
+            </declaration>
+
+            <stream type="std_output">
+                <operator op="*" type="unset">
+                    <lhs>
+                        <variable mut="var" type="int" name="a" ref_name="_bwagkmcgpmsgosa"/>
+                    </lhs>
+                    <rhs>
+                        <literal type="int" value="42" />
+                    </rhs>
+                </operator>
+            </stream>
+
+            <return>
+                <literal type="int" value="0" />
+            </return>
+        </block>
+    </procedure>
+
+</block>

ast_parser/test/test_parse_code.py

@@ -0,0 +1,107 @@
+import unittest
+
+from ast_parser.ast_parser import AstParser
+
+
+class TestParseCode(unittest.TestCase):
+    def test_parse_code(self):
+        input = """
+            procedure main() returns integer {
+                integer a = 1;
+                a * 42 -> std_output;
+                return 0;
+            }
+        """
+
+        parser = AstParser(input)
+        parser.parse()
+        self.assertIsNotNone(parser.xml)
+        self.assertEqual(parser.xml.getroot().tag, "block")
+
+    def test_unparse_variable_regular(self):
+        input = '<variable mut="var" type="int" name="a" ref_name="_lsiyjvtbvnpmlml"/>'
+        parser = AstParser(input, True)
+        parser.input = ""
+        parser._unparse_node(parser.xml)
+        self.assertIsNotNone(parser.input)
+        self.assertEqual(" a ", parser.input)
+
+    def test_unparse_variable_declaration(self):
+        input = '<variable mut="var" type="int" name="a" ref_name="_lsiyjvtbvnpmlml"/>'
+        parser = AstParser(input, True)
+        parser.input = ""
+        parser._variable_unparse(parser.xml, True)
+        self.assertIsNotNone(parser.input)
+        self.assertEqual("var integer a ", parser.input)
+
+
+    def test_unparse_rhs_single(self):
+        input = '<rhs><literal type="int" value="1" /></rhs>'
+        parser = AstParser(input, True)
+        parser.input = ""
+        parser._unparse_node(parser.xml)
+        self.assertIsNotNone(parser.input)
+        self.assertEqual(" 1 ", parser.input)
+
+    def test_unparse_declaration(self):
+        input = '<declaration><variable mut="var" type="int" name="a" ref_name="_lsiyjvtbvnpmlml"/><rhs><literal type="int" value="1" /></rhs></declaration>'
+        parser = AstParser(input, True)
+        parser.input = ""
+        parser._unparse_node(parser.xml)
+        self.assertIsNotNone(parser.input)
+        self.assertEqual("var integer a = 1 ;\n", parser.input)
+
+    def test_unparse_stream(self):
+        input = ' <stream type="std_output">                <operator op="*" type="unset">                    <lhs>                        <variable mut="var" type="int" name="a" ref_name="_lsiyjvtbvnpmlml"/>                    </lhs>                    <rhs>                        <literal type="int" value="42" />                    </rhs>                </operator></stream>'
+        parser = AstParser(input, True)
+        parser.input = ""
+        parser._unparse_node(parser.xml)
+        self.assertIsNotNone(parser.input)
+        self.assertEqual(" a * 42 -> std_output;\n", parser.input)
+
+    def test_unparse_block(self):
+        input = '<block> <declaration> <variable mut="var" type="int" name="a" ref_name="_lsiyjvtbvnpmlml"/> <rhs> <literal type="int" value="1" /> </rhs> </declaration> <stream type="std_output"> <operator op="*" type="unset"> <lhs> <variable mut="var" type="int" name="a" ref_name="_lsiyjvtbvnpmlml"/> </lhs> <rhs> <literal type="int" value="42" /> </rhs> </operator> </stream> <return> <literal type="int" value="0" /> </return> </block>'
+        parser = AstParser(input, True)
+        parser.input = ""
+        parser._unparse_node(parser.xml)
+        self.assertIsNotNone(parser.input)
+        self.assertEqual("{\n    var integer a = 1 ;\n     a * 42 -> std_output;\n    return 0 ;\n}\n\n", parser.input)
+
+    def test_unparse_operation_single(self):
+        input = '<operator op="*" type="unset"> <lhs> <variable mut="var" type="int" name="a" ref_name="_lsiyjvtbvnpmlml"/> </lhs> <rhs> <literal type="int" value="42" /> </rhs> </operator>'
+        parser = AstParser(input, True)
+        parser.input = ""
+        parser._unparse_node(parser.xml)
+        self.assertIsNotNone(parser.input)
+        self.assertEqual(" a * 42 ", parser.input)
+
+    def test_unparse_return(self):
+        input = '<return> <literal type="int" value="0" /> </return>'
+        parser = AstParser(input, True)
+        parser.input = ""
+        parser._unparse_node(parser.xml)
+        self.assertIsNotNone(parser.input)
+        self.assertEqual("return 0 ;\n", parser.input)
+
+    def test_unparse_routine(self):
+        input = '<procedure name="main" ref_name="_jemrvvseyj" return_type="int" args="()" ><block><declaration><variable mut="var" type="int" name="a" ref_name="_lsiyjvtbvnpmlml"/><rhs><literal type="int" value="1" /></rhs></declaration><stream type="std_output"><operator op="*" type="unset"><lhs><variable mut="var" type="int" name="a" ref_name="_lsiyjvtbvnpmlml"/></lhs><rhs><literal type="int" value="42" /></rhs></operator></stream><return><literal type="int" value="0" /></return></block></procedure>'
+        parser = AstParser(input, True)
+        parser.input = ""
+        parser._unparse_node(parser.xml)
+        self.assertIsNotNone(parser.input)
+        i = ' ' * parser.indentation
+        self.assertEqual("procedure main() returns integer {\n    var integer a = 1 ;\n     a * 42 -> std_output;\n    return 0 ;\n}\n\n", parser.input)
+
+    def test_unparse_code(self):
+        with open("test.xml", "r") as input:
+            parser = AstParser(input.read(), True)
+            parser.unparse()
+            self.assertIsNotNone(parser.input)
+
+        with open("input.in", "r") as input:
+            i = input.read()
+            self.assertEqual(i, parser.input)
+
+
+if __name__ == "__main__":
+    unittest.main()

config.yaml

@@ -0,0 +1,70 @@
+# The default configuration for the Gazprea Fuzzer
+---
+generation-options:
+    max-nesting-depth: 5                         # maximum nesting depth for statements
+    max-conditionals-loops: 5                    # maximum number of loops/conditionals per routine
+properties:
+    max-range-length: 5                          # maximum length of ranges, vectors and tuples, (axa matrices can exist)
+    id-length:                                   # length of identifiers
+        min: 1
+        max: 10
+    function-name-length:                        # length of function names
+        min: 1
+        max: 10
+expression-weights:                              # weights for expressions
+                                                 #  the higher a weight, the more likely (0, +inf)
+    brackets: 10
+
+    # arithmetic
+    addition: 80
+    subtraction: 80
+    multiplication: 30
+    division: 10
+    modulo: 10
+    power: 5
+    negation: 20
+
+    # comparison
+    equality: 50
+    inequality: 50
+    less-than: 30
+    greater-than: 30
+    less-than-or-equal: 10
+    greater-than-or-equal: 10
+
+    # logical
+    and: 50
+    or: 50
+    not: 10
+    xor: 10
+
+    # vector/string
+    generator: 20
+    range: 30
+    filter: 10
+    reverse: 10
+    concatenation: 50
+
+
+statement-weights:              # set to 0 for any statements you wish to exclude
+    variable-declaration:
+      int-declaration: 50
+      float-declaration: 50
+      char-declaration: 50
+      string-declaration: 50
+      bool-declaration: 50
+      vector-declaration: 20
+      tuple-declaration: 10
+      matrix-declaration: 10
+    function-call: 20
+    conditional: 30
+    loop: 20
+    assignment: 40
+    print: 20
+    input: 5
+
+    return: 5 # probability for a return statement to be placed arbitrarily in the middle of a generated procedure
+
+block-termination-probability: 0.2  # probability for a block to terminate
+
+

fuzzer.py

@@ -0,0 +1,3 @@
+class GazpreaFuzzer:
+    def __init__(self, config: str, ):
+        pass

gazprea_fuzzer.py

@@ -0,0 +1,83 @@
+import json
+from xml import etree
+
+from fuzzingbook import Grammars
+from fuzzingbook.Grammars import is_valid_grammar
+from isla.solver import ISLaSolver
+
+import ast_generator.ast_generator
+from ast_parser.ast_solver import AstSolver
+from ast_parser.ast_parser import AstParser
+from ast_generator import gazprea_ast_grammar
+import xml.etree.ElementTree as ET
+import xml.dom.minidom
+import ast_parser
+
+
+
+class GazpreaFuzzer(ISLaSolver):
+    """Produce Gazprea code"""
+    def __init__(self,
+                 grammar: Grammars,
+                 start_symbol: str = "<start>",
+                 constraint: str = "",
+                 **kwargs) -> None:
+        """
+        @brief initialize a Gazprea code generator
+
+        :param grammar: the grammar from which you would like to generate code
+        :param start_symbol: the start symbol of the grammar (default "<start>")
+        :param constraint: any constraints that you would like to impose on the solver
+        :param kwargs: any extra arguments passed to the ISLaSolver
+        """
+        assert start_symbol in grammar
+        assert is_valid_grammar(grammar)
+
+        super().__init__(grammar, constraint, start_symbol=start_symbol, **kwargs)
+
+    def fuzz(self) -> str:
+        """Produce the hecking code"""
+        AST = AstParser(eval(str(self.solve())), from_xml=True)
+        AstSolver.fix_missing_locations(AST)
+        AST.unparse()
+
+        return AST.input
+
+
+if __name__ == '__main__':
+    gen = ast_generator.ast_generator.AstGenerator(gazprea_ast_grammar.GAZPREA_TOP_LEVEL, json.loads('{}'))
+    with open("debug/test.xml", 'w') as t:
+        et = gen.generate_ast()
+        dom = xml.dom.minidom.parseString(ET.tostring(et).decode('utf-8'))
+        pretty: str = dom.toprettyxml()
+        repretty = ""
+        for line in pretty.split('\n'):
+            if line.startswith("<?xml"):
+                pass
+            else:
+                repretty += (line + '\n')
+
+        t.write(repretty)
+
+    gen.populate_ast(et)
+
+    with open("debug/populated.xml", 'w') as t:
+        dom = xml.dom.minidom.parseString(ET.tostring(et).decode('utf-8'))
+        pretty: str = dom.toprettyxml()
+        repretty = ""
+        for line in pretty.split('\n'):
+            if line.startswith("<?xml"):
+                pass
+            else:
+                repretty += (line + '\n')
+
+        t.write(repretty)
+
+
+    source = ast_parser.ast_parser.AstParser(et, from_xml=True)
+    source.unparse()
+
+    with open("debug/test.gz", 'w') as t:
+        t.write(source.input)
+
+