refactor: modified language parsers for purl2cpe support (#4188)

changed all the language parsers according to the purl2cpe database
and made the database query universal for all parsers

removed 'slf4j-simple' and 'slf4j-api' products from fail_pom.xml
file as they can be found now with purl2cpe

Signed-off-by: Meet Soni <meetsoni3017@gmail.com>

cve_bin_tool/parsers/__init__.py

@@ -85,7 +85,7 @@ def find_vendor(self, product, version):
             )
         return vendorlist
 
-    def generate_purl(self, product, vendor, qualifier={}, subpath=None):
+    def generate_purl(self, product, vendor="", qualifier={}, subpath=None):
         """Generate purl string based on various components."""
         purl = PackageURL(
             type=self.purl_pkg_type,
@@ -104,36 +104,48 @@ def find_vendor_from_purl(self, purl, ver) -> Tuple[List[ScanInfo], bool]:
         It then decodes the CPE data to extract vendor, product, and version information. If the version matches the provided
         version, it constructs a ScanInfo object for each matching entry and returns a list of these objects.
         """
-
-        query = "SELECT cpe from purl2cpe WHERE purl=?"
-        cursor = self.db_open_and_get_cursor()
-        cursor.execute(query, [str(purl)])
-        cpeList = cursor.fetchall()
-        vendorlist: list[ScanInfo] = []
-        vendors = set()
-
-        if cpeList != []:
-            for item in cpeList:
-                vendor, product, version = self.decode_cpe23(str(item))
-                vendors.add((vendor, product))
-        else:
-            return vendorlist, False
-        purl_with_ver = f"{str(purl)}@{ver}"
-        for vendor, product in vendors:
-            vendorlist.append(
-                ScanInfo(
-                    ProductInfo(
-                        vendor,
-                        product,
-                        ver,
-                        "/usr/local/bin/product",
-                        purl=purl_with_ver,
-                    ),
-                    self.filename,
+        try:
+            purl = purl.to_dict()
+            param1 = f"pkg:{purl['type']}/{purl['name']}"
+            param2 = f"pkg:{purl['type']}/%/{purl['name']}"
+
+            query = """
+                SELECT cpe from purl2cpe WHERE purl LIKE ?
+                UNION
+                SELECT cpe from purl2cpe WHERE purl LIKE ?
+            """
+            cursor = self.db_open_and_get_cursor()
+            cursor.execute(query, (param1, param2))
+            cpeList = cursor.fetchall()
+            vendorlist: list[ScanInfo] = []
+            vendors = set()
+
+            if cpeList != []:
+                for item in cpeList:
+                    vendor, _, _ = self.decode_cpe23(str(item))
+                    vendors.add((vendor, purl["name"]))
+            else:
+                return vendorlist, False
+
+            purl_with_ver = f"{str(purl)}@{ver}"
+            for vendor, product in vendors:
+                vendorlist.append(
+                    ScanInfo(
+                        ProductInfo(
+                            vendor,
+                            product,
+                            ver,
+                            "/usr/local/bin/product",
+                            purl_with_ver,
+                        ),
+                        self.filename,
+                    )
                 )
-            )
 
-        return vendorlist, True
+            return vendorlist, True
+        except Exception as e:
+            self.logger.error(f"Error occurred: {e}")
+            return [], False
 
     def db_open_and_get_cursor(self) -> sqlite3.Cursor:
         """Opens connection to sqlite database, returns cursor object."""

cve_bin_tool/parsers/dart.py

@@ -19,15 +19,14 @@ def __init__(self, cve_db, logger):
         super().__init__(cve_db, logger)
         self.purl_pkg_type = "pub"
 
-    def generate_purl(self, product, vendor, qualifier={}, subpath=None):
+    def generate_purl(self, product, vendor="", qualifier={}, subpath=None):
         """
         Generates PURL after normalizing all components.
         pubspec: https://dart.dev/tools/pub/pubspec#name
         purl-spec for pub: https://github.com/package-url/purl-spec/blob/master/PURL-TYPES.rst#pub
         """
-        # Normalize product and vendor for Dart packages
+        # Normalize product for Dart packages
         product = re.sub(r"[^a-zA-Z0-9_]", "", product).lower()
-        vendor = "UNKNOWN"  # The vendor is not explicitly defined for pub packages
         if not product:
             return None
 
@@ -50,7 +49,10 @@ def run_checker(self, filename):
             for package_name, package_detail in data.get("packages", {}).items():
                 product = package_name
                 version = package_detail.get("version").replace('"', "")
-                vendor = self.find_vendor(product, version)
+                purl = self.generate_purl(product)
+                vendor, result = self.find_vendor_from_purl(purl, version)
+                if not result:
+                    vendor = self.find_vendor(product, version)
                 if vendor:
                     yield from vendor
         self.logger.debug(f"Done scanning file: {self.filename}")

cve_bin_tool/parsers/go.py

@@ -29,16 +29,13 @@ def __init__(self, cve_db, logger):
         super().__init__(cve_db, logger)
         self.purl_pkg_type = "golang"
 
-    def generate_purl(self, product, vendor, qualifier={}, subpath=None):
+    def generate_purl(self, product, vendor="", qualifier={}, subpath=None):
         """Generates PURL after normalizing all components."""
 
         product = re.sub(r"[^a-zA-Z0-9_-]", "", product)
-        vendor = re.sub(r"^[^a-zA-Z_]|[^a-zA-Z0-9_-]", "", vendor)
 
         if not re.match(r"^[a-zA-Z0-9_-]", product):
             return
-        if vendor == "":
-            vendor = "UNKNOWN"
 
         purl = super().generate_purl(
             product,
@@ -73,7 +70,11 @@ def run_checker(self, filename):
                     if len(parts) >= 2:
                         product = line.split(" ")[0].split("/")[-1]
                         version = line.split(" ")[1][1:].split("-")[0].split("+")[0]
-                        vendors = self.find_vendor(product, version)
+                        purl = self.generate_purl(product)
+                        vendors, result = self.find_vendor_from_purl(purl, version)
+
+                        if not result:
+                            vendors = self.find_vendor(product, version)
                         if vendors is not None:
                             yield from vendors
             self.logger.debug(f"Done scanning file: {self.filename}")

cve_bin_tool/parsers/java.py

@@ -1,3 +1,4 @@
+# NOTE: DONE
 # Copyright (C) 2022 Intel Corporation
 # SPDX-License-Identifier: GPL-3.0-or-later
 """Script containing all functionalities relating to parsing of Java-based files."""
@@ -18,11 +19,10 @@ def __init__(self, cve_db, logger, validate=True):
         self.validate = validate
         self.purl_pkg_type = "maven"
 
-    def generate_purl(self, product, vendor, qualifier={}, subpath=None):
+    def generate_purl(self, product, vendor="", qualifier={}, subpath=None):
         """Generates PURL after normalizing all components of a Maven package."""
-        # Normalize product and vendor
+        # Normalize product
         product = re.sub(r"[^a-zA-Z0-9._-]", "", product).lower()
-        vendor = re.sub(r"[^a-zA-Z0-9._-]", "", vendor).lower() if vendor else "UNKNOWN"
 
         if not product:
             return None
@@ -97,7 +97,10 @@ def run_checker(self, filename):
             if product is None and parent is not None:
                 product = parent.find(schema + "artifactId").text
             if product is not None and version is not None:
-                product_info = self.find_vendor(product, version)
+                purl = self.generate_purl(product)
+                product_info, result = self.find_vendor_from_purl(purl, version)
+                if not result:
+                    product_info = self.find_vendor(product, version)
                 if product_info is not None:
                     yield from product_info
 
@@ -130,7 +133,14 @@ def run_checker(self, filename):
                             self.logger.debug(f"{file_path} {product.text} {version}")
                             if version[0].isdigit():
                                 # Valid version identifier
-                                product_info = self.find_vendor(product.text, version)
+                                purl = self.generate_purl(product.text)
+                                product_info, result = self.find_vendor_from_purl(
+                                    purl, version
+                                )
+                                if not result:
+                                    product_info = self.find_vendor(
+                                        product.text, version
+                                    )
                                 if product_info is not None:
                                     yield from product_info
         self.logger.debug(f"Done scanning file: {filename}")

cve_bin_tool/parsers/javascript.py

@@ -15,10 +15,9 @@ def __init__(self, cve_db, logger):
         super().__init__(cve_db, logger)
         self.purl_pkg_type = "npm"
 
-    def generate_purl(self, product, vendor, qualifier={}, subpath=None):
+    def generate_purl(self, product, vendor="", qualifier={}, subpath=None):
         """Generates PURL after normalizing all components."""
         product = re.sub(r"[^a-zA-Z0-9._-]", "", product).lower()
-        vendor = "UNKNOWN"  # Typically, the vendor is not explicitly defined for npm packages
 
         if not product:
             return None
@@ -44,7 +43,11 @@ def run_checker(self, filename):
             if "name" in data and "version" in data:
                 product = data["name"]
                 version = data["version"]
-                vendor = self.find_vendor(product, version)
+                purl = self.generate_purl(product)
+                vendor, result = self.find_vendor_from_purl(purl, version)
+
+                if not result:
+                    vendor = self.find_vendor(product, version)
             else:
                 vendor = None
             if vendor is not None:
@@ -93,7 +96,11 @@ def run_checker(self, filename):
                             product_version_mapping.append((product, version))
 
             for product, version in product_version_mapping:
-                vendor = self.find_vendor(product, version)
+                purl = self.generate_purl(product, "")
+                vendor, result = self.find_vendor_from_purl(purl, version)
+
+                if not result:
+                    vendor = self.find_vendor(product, version)
                 if vendor is not None:
                     yield from vendor
             self.logger.debug(f"Done scanning file: {self.filename}")

cve_bin_tool/parsers/perl.py

@@ -13,11 +13,10 @@ def __init__(self, cve_db, logger):
         super().__init__(cve_db, logger)
         self.purl_pkg_type = "cpan"
 
-    def generate_purl(self, product, vendor, qualifier={}, subpath=None):
+    def generate_purl(self, product, vendor="", qualifier={}, subpath=None):
         """Generates PURL after normalizing all components."""
         # Normalize product and vendor for Perl packages
         product = re.sub(r"[^a-zA-Z0-9._-]", "", product).lower()
-        vendor = "UNKNOWN"  # Typically, the vendor is not explicitly defined for CPAN packages
 
         if not product:
             return None
@@ -53,7 +52,13 @@ def run_checker(self, filename):
 
             # Print the extracted dependencies
             for dependency in dependencies:
-                vendor = self.find_vendor(dependency[0], dependency[1])
+                product = dependency[0]
+                version = dependency[1]
+                purl = self.generate_purl(product)
+                vendor, result = self.find_vendor_from_purl(purl, version)
+
+                if not result:
+                    vendor = self.find_vendor(product, version)
                 if vendor is not None:
                     yield from vendor
         self.logger.debug(f"Done scanning file: {self.filename}")

cve_bin_tool/parsers/php.py

@@ -1,3 +1,6 @@
+# NOTE: remains not complete
+
+
 # Copyright (C) 2024 Intel Corporation
 # SPDX-License-Identifier: GPL-3.0-or-later
 """Python script containing all functionalities related to parsing of php's composer.lock files."""
@@ -19,12 +22,11 @@ def __init__(self, cve_db, logger):
         super().__init__(cve_db, logger)
         self.purl_pkg_type = "composer"
 
-    def generate_purl(self, product, vendor, qualifier={}, subpath=None):
+    def generate_purl(self, product, vendor="", qualifier={}, subpath=None):
         """Generates PURL after normalizing all components."""
-        vendor = re.sub(r"[^a-zA-Z0-9._-]", "", vendor).lower()
         product = re.sub(r"[^a-zA-Z0-9._-]", "", product).lower()
 
-        if not vendor or not product:
+        if not product:
             return None
 
         purl = super().generate_purl(
@@ -51,7 +53,11 @@ def run_checker(self, filename):
                         version = version[1:]
                     if "dev" in version:
                         continue
-                    vendor = self.find_vendor(product, version)
+                    purl = self.generate_purl(product)
+                    vendor, result = self.find_vendor_from_purl(purl, version)
+
+                    if not result:
+                        vendor = self.find_vendor(product, version)
                     if vendor is not None:
                         yield from vendor
             self.logger.debug(f"Done scanning file: {self.filename}")

cve_bin_tool/parsers/python.py

@@ -25,7 +25,7 @@ def __init__(self, cve_db, logger):
         super().__init__(cve_db, logger)
         self.purl_pkg_type = "pypi"
 
-    def generate_purl(self, product, vendor, qualifier={}, subpath=None):
+    def generate_purl(self, product, vendor="", qualifier={}, subpath=None):
         """Generates PURL after normalizing all components."""
         product = re.sub(r"[^a-zA-Z0-9._-]", "", product).lower()
 
@@ -96,7 +96,7 @@ def run_checker(self, filename):
             for line in lines["install"]:
                 product = line["metadata"]["name"]
                 version = line["metadata"]["version"]
-                purl = self.generate_purl(product, "")
+                purl = self.generate_purl(product)
                 vendor, result = self.find_vendor_from_purl(purl, version)
 
                 if not result:
@@ -119,7 +119,7 @@ def __init__(self, cve_db, logger):
         super().__init__(cve_db, logger)
         self.purl_pkg_type = "pypi"
 
-    def generate_purl(self, product, vendor, qualifier={}, subpath=None):
+    def generate_purl(self, product, vendor="", qualifier={}, subpath=None):
         """Generates PURL after normalizing all components."""
         product = re.sub(r"[^a-zA-Z0-9._-]", "", product).lower()
 
@@ -147,7 +147,7 @@ def run_checker(self, filename):
         try:
             product = search(compile(r"^Name: (.+)$", MULTILINE), lines).group(1)
             version = search(compile(r"^Version: (.+)$", MULTILINE), lines).group(1)
-            purl = self.generate_purl(product, "")
+            purl = self.generate_purl(product)
             vendor, result = self.find_vendor_from_purl(purl, version)
 
             if vendor is not None:

cve_bin_tool/parsers/r.py

@@ -30,11 +30,10 @@ def __init__(self, cve_db, logger):
         super().__init__(cve_db, logger)
         self.purl_pkg_type = "cran"
 
-    def generate_purl(self, product, vendor, qualifier={}, subpath=None):
+    def generate_purl(self, product, vendor="", qualifier={}, subpath=None):
         """Generates PURL after normalizing all components."""
 
         product = re.sub(r"[^a-zA-Z0-9.-]", "", product)
-        vendor = "UNKNOWN"
 
         if not re.match(r"^[a-zA-Z0-9_-]", product):
             return
@@ -57,7 +56,12 @@ def run_checker(self, filename):
             for package in content["Packages"]:
                 product = content["Packages"][package]["Package"]
                 version = content["Packages"][package]["Version"]
-                vendor = self.find_vendor(product, version)
+                purl = self.generate_purl(product)
+                vendor, result = self.find_vendor_from_purl(purl, version)
+
+                if not result:
+                    vendor = self.find_vendor(product, version)
+
                 if vendor is not None:
                     yield from vendor
             self.logger.debug(f"Done scanning file: {self.filename}")

cve_bin_tool/parsers/ruby.py

@@ -1,4 +1,6 @@
-# Copyright (C) 2022 Intel Corporation
+# Copyright (C) 2024 Intel Corporation
+
+
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 import re
@@ -29,16 +31,13 @@ def __init__(self, cve_db, logger):
         super().__init__(cve_db, logger)
         self.purl_pkg_type = "gem"
 
-    def generate_purl(self, product, vendor, qualifier={}, subpath=None):
+    def generate_purl(self, product, vendor="", qualifier={}, subpath=None):
         """Generates PURL after normalizing all components."""
 
         product = re.sub(r"^[^a-z]|[^a-z0-9_-]", "", product)
-        vendor = re.sub(r"^[^a-z]|[^a-z0-9_-]", "", vendor)
 
         if not re.match(r"^[a-z]|[a-z0-9_-]", product):
             return
-        if vendor == "":
-            vendor = "UNKNOWN"
 
         purl = super().generate_purl(
             product,
@@ -69,7 +68,11 @@ def run_checker(self, filename):
                 ):
                     product = line.strip().split()[0]
                     version = line.strip().split("(")[1][:-1]
-                    vendors = self.find_vendor(product, version)
+                    purl = self.generate_purl(product)
+                    vendors, result = self.find_vendor_from_purl(purl, version)
+
+                    if not result:
+                        vendors = self.find_vendor(product, version)
                     if vendors is not None:
                         yield from vendors
             self.logger.debug(f"Done scanning file: {self.filename}")