fix: Make lief optional again

fix #538

pymisp/tools/__init__.py

@@ -1,9 +1,6 @@
 from .vtreportobject import VTReportObject  # noqa
 from .neo4j import Neo4j  # noqa
 from .fileobject import FileObject  # noqa
-from .peobject import PEObject, PESectionObject  # noqa
-from .elfobject import ELFObject, ELFSectionObject  # noqa
-from .machoobject import MachOObject, MachOSectionObject  # noqa
 from .create_misp_object import make_binary_objects  # noqa
 from .abstractgenerator import AbstractMISPObjectGenerator  # noqa
 from .genericgenerator import GenericObjectGenerator  # noqa
@@ -24,3 +21,11 @@ try:
 except ImportError:
     # Requires faup, which is a bit difficult to install
     pass
+
+try:
+    from .peobject import PEObject, PESectionObject  # noqa
+    from .elfobject import ELFObject, ELFSectionObject  # noqa
+    from .machoobject import MachOObject, MachOSectionObject  # noqa
+except ImportError:
+    # Requires lief, which is a bit difficult to install
+    pass

pymisp/tools/create_misp_object.py

@@ -4,7 +4,7 @@
 import sys
 from io import BytesIO
 
-from . import FileObject, PEObject, ELFObject, MachOObject
+from . import FileObject
 from ..exceptions import MISPObjectException
 import logging
 from typing import Optional
@@ -16,6 +16,11 @@ try:
     from lief import Logger  # type: ignore
     Logger.disable()
     HAS_LIEF = True
+
+    from .peobject import make_pe_objects
+    from .elfobject import make_elf_objects
+    from .machoobject import make_macho_objects
+
 except ImportError:
     HAS_LIEF = False
 
@@ -24,33 +29,6 @@ class FileTypeNotImplemented(MISPObjectException):
     pass
 
 
-def make_pe_objects(lief_parsed: lief.Binary, misp_file: FileObject, standalone: bool=True, default_attributes_parameters: dict={}):
-    pe_object = PEObject(parsed=lief_parsed, standalone=standalone, default_attributes_parameters=default_attributes_parameters)
-    misp_file.add_reference(pe_object.uuid, 'includes', 'PE indicators')
-    pe_sections = []
-    for s in pe_object.sections:
-        pe_sections.append(s)
-    return misp_file, pe_object, pe_sections
-
-
-def make_elf_objects(lief_parsed: lief.Binary, misp_file: FileObject, standalone: bool=True, default_attributes_parameters: dict={}):
-    elf_object = ELFObject(parsed=lief_parsed, standalone=standalone, default_attributes_parameters=default_attributes_parameters)
-    misp_file.add_reference(elf_object.uuid, 'includes', 'ELF indicators')
-    elf_sections = []
-    for s in elf_object.sections:
-        elf_sections.append(s)
-    return misp_file, elf_object, elf_sections
-
-
-def make_macho_objects(lief_parsed: lief.Binary, misp_file: FileObject, standalone: bool=True, default_attributes_parameters: dict={}):
-    macho_object = MachOObject(parsed=lief_parsed, standalone=standalone, default_attributes_parameters=default_attributes_parameters)
-    misp_file.add_reference(macho_object.uuid, 'includes', 'MachO indicators')
-    macho_sections = []
-    for s in macho_object.sections:
-        macho_sections.append(s)
-    return misp_file, macho_object, macho_sections
-
-
 def make_binary_objects(filepath: Optional[str]=None, pseudofile: Optional[BytesIO]=None, filename: Optional[str]=None, standalone: bool=True, default_attributes_parameters: dict={}):
     misp_file = FileObject(filepath=filepath, pseudofile=pseudofile, filename=filename,
                            standalone=standalone, default_attributes_parameters=default_attributes_parameters)

pymisp/tools/elfobject.py

@@ -8,14 +8,9 @@ from hashlib import md5, sha1, sha256, sha512
 import logging
 from typing import Union
 from pathlib import Path
+from . import FileObject
 
-logger = logging.getLogger('pymisp')
-
-try:
 import lief  # type: ignore
-    HAS_LIEF = True
-except ImportError:
-    HAS_LIEF = False
 
 try:
     import pydeep  # type: ignore
@@ -23,6 +18,17 @@ try:
 except ImportError:
     HAS_PYDEEP = False
 
+logger = logging.getLogger('pymisp')
+
+
+def make_elf_objects(lief_parsed: lief.Binary, misp_file: FileObject, standalone: bool=True, default_attributes_parameters: dict={}):
+    elf_object = ELFObject(parsed=lief_parsed, standalone=standalone, default_attributes_parameters=default_attributes_parameters)
+    misp_file.add_reference(elf_object.uuid, 'includes', 'ELF indicators')
+    elf_sections = []
+    for s in elf_object.sections:
+        elf_sections.append(s)
+    return misp_file, elf_object, elf_sections
+
 
 class ELFObject(AbstractMISPObjectGenerator):
 
@@ -30,8 +36,6 @@ class ELFObject(AbstractMISPObjectGenerator):
         super(ELFObject, self).__init__('elf', standalone=standalone, **kwargs)
         if not HAS_PYDEEP:
             logger.warning("Please install pydeep: pip install git+https://github.com/kbandla/pydeep.git")
-        if not HAS_LIEF:
-            raise ImportError('Please install lief, documentation here: https://github.com/lief-project/LIEF')
         if pseudofile:
             if isinstance(pseudofile, BytesIO):
                 self.__elf = lief.ELF.parse(raw=pseudofile.getvalue())

pymisp/tools/machoobject.py

@@ -8,15 +8,9 @@ from hashlib import md5, sha1, sha256, sha512
 import logging
 from typing import Optional, Union
 from pathlib import Path
+from . import FileObject
 
-logger = logging.getLogger('pymisp')
-
-
-try:
 import lief  # type: ignore
-    HAS_LIEF = True
-except ImportError:
-    HAS_LIEF = False
 
 try:
     import pydeep  # type: ignore
@@ -24,6 +18,17 @@ try:
 except ImportError:
     HAS_PYDEEP = False
 
+logger = logging.getLogger('pymisp')
+
+
+def make_macho_objects(lief_parsed: lief.Binary, misp_file: FileObject, standalone: bool=True, default_attributes_parameters: dict={}):
+    macho_object = MachOObject(parsed=lief_parsed, standalone=standalone, default_attributes_parameters=default_attributes_parameters)
+    misp_file.add_reference(macho_object.uuid, 'includes', 'MachO indicators')
+    macho_sections = []
+    for s in macho_object.sections:
+        macho_sections.append(s)
+    return misp_file, macho_object, macho_sections
+
 
 class MachOObject(AbstractMISPObjectGenerator):
 
@@ -33,8 +38,6 @@ class MachOObject(AbstractMISPObjectGenerator):
         super(MachOObject, self).__init__('macho', standalone=standalone, **kwargs)
         if not HAS_PYDEEP:
             logger.warning("Please install pydeep: pip install git+https://github.com/kbandla/pydeep.git")
-        if not HAS_LIEF:
-            raise ImportError('Please install lief, documentation here: https://github.com/lief-project/LIEF')
         if pseudofile:
             if isinstance(pseudofile, BytesIO):
                 self.__macho = lief.MachO.parse(raw=pseudofile.getvalue())

pymisp/tools/peobject.py

@@ -10,13 +10,9 @@ import logging
 from typing import Optional, Union
 from pathlib import Path
 
-logger = logging.getLogger('pymisp')
+from . import FileObject
 
-try:
 import lief  # type: ignore
-    HAS_LIEF = True
-except ImportError:
-    HAS_LIEF = False
 
 try:
     import pydeep  # type: ignore
@@ -24,6 +20,17 @@ try:
 except ImportError:
     HAS_PYDEEP = False
 
+logger = logging.getLogger('pymisp')
+
+
+def make_pe_objects(lief_parsed: lief.Binary, misp_file: FileObject, standalone: bool=True, default_attributes_parameters: dict={}):
+    pe_object = PEObject(parsed=lief_parsed, standalone=standalone, default_attributes_parameters=default_attributes_parameters)
+    misp_file.add_reference(pe_object.uuid, 'includes', 'PE indicators')
+    pe_sections = []
+    for s in pe_object.sections:
+        pe_sections.append(s)
+    return misp_file, pe_object, pe_sections
+
 
 class PEObject(AbstractMISPObjectGenerator):
 
@@ -33,8 +40,6 @@ class PEObject(AbstractMISPObjectGenerator):
         super(PEObject, self).__init__('pe', standalone=standalone, **kwargs)
         if not HAS_PYDEEP:
             logger.warning("Please install pydeep: pip install git+https://github.com/kbandla/pydeep.git")
-        if not HAS_LIEF:
-            raise ImportError('Please install lief, documentation here: https://github.com/lief-project/LIEF')
         if pseudofile:
             if isinstance(pseudofile, BytesIO):
                 self.__pe = lief.PE.parse(raw=pseudofile.getvalue())

setup.py

@@ -38,8 +38,8 @@ setup(
         'Topic :: Security',
         'Topic :: Internet',
     ],
-    install_requires=['six', 'requests', 'python-dateutil', 'jsonschema', 'deprecated', 'lief>=0.10.1'],
-    extras_require={'fileobjects': ['python-magic', 'pydeep'],
+    install_requires=['six', 'requests', 'python-dateutil', 'jsonschema', 'deprecated'],
+    extras_require={'fileobjects': ['python-magic', 'pydeep', 'lief>=0.10.1'],
                     'neo': ['py2neo'],
                     'openioc': ['beautifulsoup4'],
                     'virustotal': ['validators'],