Fixes #142, #143 (#144)

Signed-off-by: Prabhu Subramanian <[email protected]>

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "appthreat-vulnerability-db"
-version = "6.0.5"
+version = "6.0.6"
 description = "AppThreat's vulnerability database and package search library with a built-in sqlite based storage. OSV, CVE, GitHub, npm are the primary sources of vulnerabilities."
 authors = [
     {name = "Team AppThreat", email = "[email protected]"},

test/test_utils.py

@@ -1,4 +1,4 @@
-from vdb.lib import utils as utils
+from vdb.lib import utils
 
 
 def test_normalise():
@@ -225,7 +225,7 @@ def test_version_build_compare():
 
 
 def test_version_build_compare1():
-    sver, srest = utils.convert_to_semver("2.1.5.1-r3")
+    sver, _ = utils.convert_to_semver("2.1.5.1-r3")
     assert sver
     res = utils.version_compare("2.1.5.1-r3", "1.2.1-r0", "2.1.5.1-r1")
     assert not res
@@ -631,7 +631,7 @@ def test_redhat_build_compare():
 
 
 def test_parse_uri():
-    vendor, package, version, cve_type = utils.parse_cpe(
+    vendor, package, version, _ = utils.parse_cpe(
         "cpe:2.3:o:google:android:9.0:*:*:*:*:*:*:*"
     )
     assert vendor == "google"
@@ -888,6 +888,18 @@ def test_purl_vers_convert():
             ],
             "vers:deb/53.5",
         ),
+        (
+            "generic",
+            [
+                {
+                    "version": "0.0.0",
+                    "status": "affected",
+                    "versionType": "generic",
+                    "lessThan": "001a3278b5572e52c0ecac0bd1157bf2599502b7",
+                }
+            ],
+            "vers:generic/<001a3278b5572e52c0ecac0bd1157bf2599502b7",
+        ),
     ]
     for tt in test_tuples:
         assert utils.to_purl_vers(tt[0], tt[1]) == tt[2]
@@ -992,6 +1004,16 @@ def test_url_to_purl():
         "qualifiers": None,
         "subpath": None,
     }
+    assert utils.url_to_purl(
+        "https://www.github.com/kiwitcms/kiwi/commit/ffb00450be52fe11a82a2507632c2328cae4ec9d"
+    ) == {
+        "type": "github",
+        "namespace": "kiwitcms",
+        "name": "kiwi",
+        "version": "ffb00450be52fe11a82a2507632c2328cae4ec9d",
+        "qualifiers": None,
+        "subpath": None,
+    }
 
 
 def test_vers_compare():

vdb/lib/utils.py

@@ -59,8 +59,11 @@ def __init__(self, msg):
 
 
 def load(d):
-    """Parses a python object from a JSON string. Every Object which should be loaded needs a constuctor that doesn't need any Arguments.
-    Arguments: Dict object; the module which contains the class, the parsed object is instance of.
+    """
+    Parses a python object from a JSON string.
+    Every Object which should be loaded needs a constuctor that doesn't need any Arguments.
+    Arguments: Dict object; the module which contains the class,
+        the parsed object is instance of.
     """
 
     def _load(d1):
@@ -610,9 +613,11 @@ def version_compare(
                 return False
             if mae:
                 if VersionInfo.is_valid(compare_ver) and VersionInfo.is_valid(mae):
-                    cmp_value = VersionInfo.parse(compare_ver, optional_minor_and_patch=True).compare(mae)
+                    cmp_value = VersionInfo.parse(
+                        compare_ver, optional_minor_and_patch=True
+                    ).compare(mae)
                     return cmp_value < 0
-                elif "." not in compare_ver and "." not in mae:
+                if "." not in compare_ver and "." not in mae:
                     compare_ver = re.split(r"[+~]", compare_ver)[0]
                     mae = re.split(r"[+~]", mae)[0]
                     exnum = list(filter(str.isdigit, compare_ver))
@@ -651,8 +656,12 @@ def version_compare(
     # Perform semver match once we have all the required versions
     if compare_ver and min_version and max_version:
         if semver_compatible(compare_ver, min_version, max_version):
-            min_value = VersionInfo.parse(compare_ver, optional_minor_and_patch=True).compare(min_version)
-            max_value = VersionInfo.parse(compare_ver, optional_minor_and_patch=True).compare(max_version)
+            min_value = VersionInfo.parse(
+                compare_ver, optional_minor_and_patch=True
+            ).compare(min_version)
+            max_value = VersionInfo.parse(
+                compare_ver, optional_minor_and_patch=True
+            ).compare(max_version)
             min_check = min_value > 0 if is_min_exclude else min_value >= 0
             max_check = max_value < 0 if is_max_exclude else max_value <= 0
             return min_check and max_check
@@ -1099,7 +1108,11 @@ def to_purl_vers(vendor: str, versions: list) -> str:
                 else:
                     vers_list.append(f">={version}")
             if less_than and less_than != "*" and not less_than_or_equal:
-                vers_list.append(f"<{less_than}")
+                # Fix for #142
+                if version == "0.0.0" and check_hex(less_than):
+                    vers_list = [f"<{less_than}"]
+                else:
+                    vers_list.append(f"<{less_than}")
             if not less_than and less_than_or_equal:
                 if less_than_or_equal == "*":
                     vers_list.append("*")
@@ -1152,9 +1165,10 @@ def url_to_purl(url: str) -> dict | None:
     url_obj = urlparse(f"https://{git_repo_name}")
     # Fix for #112
     pkg_type = "generic"
-    hostname = url_obj.hostname
-    if url_obj.hostname in ("github.com", "gitlab.com"):
-        pkg_type = url_obj.hostname.removesuffix(".com")
+    # Fix for #143
+    hostname = url_obj.hostname.removeprefix("www.")
+    if hostname in ("github.com", "gitlab.com"):
+        pkg_type = hostname.removesuffix(".com")
         git_repo_name = url_obj.path
         hostname = None
     # Filter repo names without a path