Add commit collection support to Apache Tomcat V2 importer

- Extract GitHub and GitBox commit URLs from security advisories
- Create PackageCommitPatchData for each commit hash
- Populate fixed_by_commit_patches on AffectedPackageV2
- Add ReferenceV2 for all fix-related URLs
- Add tests for commit URL extraction, GitBox support, and pipeline integration

Signed-off-by: Dhirenderchoudhary <dhirenderchoudhary0001@gmail.com>

Author: Dhirenderchoudhary

vulnerabilities/pipelines/v2_importers/apache_tomcat_importer.py

@@ -13,6 +13,7 @@
 from collections import defaultdict
 from collections import namedtuple
 from typing import Iterable
+from typing import List
 
 import requests
 from bs4 import BeautifulSoup
@@ -25,8 +26,18 @@
 
 from vulnerabilities.importer import AdvisoryDataV2
 from vulnerabilities.importer import AffectedPackageV2
+from vulnerabilities.importer import PackageCommitPatchData
+from vulnerabilities.importer import ReferenceV2
 from vulnerabilities.pipelines import VulnerableCodeBaseImporterPipelineV2
 
+GITHUB_COMMIT_URL_RE = re.compile(
+    r"https?://github\.com/apache/tomcat/commit/(?P<commit_hash>[0-9a-f]{5,40})"
+)
+GITBOX_COMMIT_URL_RE = re.compile(
+    r"https?://gitbox\.apache\.org/repos/asf\?p=tomcat\.git;a=commit;h=(?P<commit_hash>[0-9a-f]{5,40})"
+)
+TOMCAT_VCS_URL = "https://github.com/apache/tomcat"
+
 
 class ApacheTomcatImporterPipeline(VulnerableCodeBaseImporterPipelineV2):
     """
@@ -75,6 +86,9 @@ def collect_advisories(self) -> Iterable[AdvisoryDataV2]:
                     grouped[advisory.cve].append(advisory)
                 for cve, advisory_list in grouped.items():
                     affected_packages = []
+                    references = []
+                    all_commit_patches = []
+
                     for advisory in advisory_list:
                         self.log(f"Processing advisory {advisory.cve}")
                         apache_range = to_version_ranges_apache(
@@ -88,10 +102,19 @@ def collect_advisories(self) -> Iterable[AdvisoryDataV2]:
                             advisory.fixed_in,
                         )
 
+                        commit_patches = get_commit_patches(
+                            advisory.commit_urls,
+                        )
+                        all_commit_patches.extend(commit_patches)
+
+                        for ref_url in advisory.reference_urls:
+                            references.append(ReferenceV2(url=ref_url))
+
                         affected_packages.append(
                             AffectedPackageV2(
                                 package=PackageURL(type="apache", name="tomcat"),
                                 affected_version_range=apache_range,
+                                fixed_by_commit_patches=commit_patches,
                             )
                         )
 
@@ -103,13 +126,15 @@ def collect_advisories(self) -> Iterable[AdvisoryDataV2]:
                                     name="tomcat",
                                 ),
                                 affected_version_range=maven_range,
+                                fixed_by_commit_patches=commit_patches,
                             )
                         )
                     page_id = page_url.split("/")[-1].replace(".html", "")
                     yield AdvisoryDataV2(
                         advisory_id=f"{page_id}/{cve}",
                         summary=advisory_list[0].summary,
                         affected_packages=affected_packages,
+                        references=references,
                         url=page_url,
                     )
 
@@ -260,6 +285,8 @@ class TomcatAdvisoryData:
     summary: str
     fixed_in: str
     affected_versions: str
+    commit_urls: List[str] = dataclasses.field(default_factory=list)
+    reference_urls: List[str] = dataclasses.field(default_factory=list)
 
 
 def parse_tomcat_security(html_content):
@@ -285,36 +312,60 @@ def parse_tomcat_security(html_content):
 
             if strong and cve_link:
                 if current:
-                    results.append(current)
+                    results.append(_finalize_advisory(current))
 
                 current = {
                     "cve": cve_link.get_text(strip=True),
                     "summary": strong.get_text(" ", strip=True),
                     "affected_versions": None,
                     "fixed_in": fixed_in,
+                    "commit_urls": [],
+                    "reference_urls": [],
                 }
                 continue
 
             if current:
                 text = p.get_text(" ", strip=True)
+
+                if "was fixed" in text.lower():
+                    for link in p.find_all("a", href=True):
+                        href = link["href"]
+                        if GITHUB_COMMIT_URL_RE.match(href) or GITBOX_COMMIT_URL_RE.match(href):
+                            current["commit_urls"].append(href)
+                        current["reference_urls"].append(href)
+
                 if text.startswith("Affects:"):
                     current["affected_versions"] = text.replace("Affects:", "").strip()
-                    current = TomcatAdvisoryData(
-                        cve=current["cve"],
-                        summary=current["summary"],
-                        affected_versions=current["affected_versions"],
-                        fixed_in=current["fixed_in"],
-                    )
-                    results.append(current)
+                    results.append(_finalize_advisory(current))
                     current = None
 
         if current:
-            current = TomcatAdvisoryData(
-                cve=current["cve"],
-                summary=current["summary"],
-                affected_versions=current["affected_versions"],
-                fixed_in=current["fixed_in"],
-            )
-            results.append(current)
+            results.append(_finalize_advisory(current))
 
     return results
+
+
+def _finalize_advisory(current):
+    return TomcatAdvisoryData(
+        cve=current["cve"],
+        summary=current["summary"],
+        affected_versions=current["affected_versions"],
+        fixed_in=current["fixed_in"],
+        commit_urls=current.get("commit_urls", []),
+        reference_urls=current.get("reference_urls", []),
+    )
+
+
+def get_commit_patches(commit_urls):
+    commit_patches = []
+    for url in commit_urls:
+        match = GITHUB_COMMIT_URL_RE.match(url) or GITBOX_COMMIT_URL_RE.match(url)
+        if match:
+            commit_hash = match.group("commit_hash")
+            commit_patches.append(
+                PackageCommitPatchData(
+                    vcs_url=TOMCAT_VCS_URL,
+                    commit_hash=commit_hash,
+                )
+            )
+    return commit_patches

vulnerabilities/tests/pipelines/v2_importers/test_apache_tomcat_importer_pipeline.py

@@ -16,11 +16,14 @@
 
 from vulnerabilities.importer import AdvisoryDataV2
 from vulnerabilities.importer import AffectedPackageV2
+from vulnerabilities.importer import PackageCommitPatchData
+from vulnerabilities.importer import ReferenceV2
 from vulnerabilities.pipelines.v2_importers.apache_tomcat_importer import (
     ApacheTomcatImporterPipeline,
+    TomcatAdvisoryData,
+    get_commit_patches,
+    parse_tomcat_security,
 )
-from vulnerabilities.pipelines.v2_importers.apache_tomcat_importer import TomcatAdvisoryData
-from vulnerabilities.pipelines.v2_importers.apache_tomcat_importer import parse_tomcat_security
 
 TOMCAT_SECURITY_HTML = """
 <html>
@@ -52,6 +55,26 @@
 </html>
 """
 
+TOMCAT_SECURITY_HTML_WITH_COMMITS = """
+<html>
+<body>
+<h3 id="Fixed_in_Apache_Tomcat_10.1.40">Fixed in Apache Tomcat 10.1.40</h3>
+<div class="text">
+  <p>
+    <strong>Important: Denial of Service</strong>
+    <a href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-31650">CVE-2025-31650</a>
+  </p>
+  <p>This was fixed with commits
+    <a href="https://github.com/apache/tomcat/commit/cba1a0fe1289ee7f5dd46c61c38d1e1ac5437bff">cba1a0fe</a>,
+    <a href="https://github.com/apache/tomcat/commit/1eef1dc459c45f1e421d8bd25ef340fc1cc34edc">1eef1dc4</a> and
+    <a href="https://github.com/apache/tomcat/commit/8cc3b8fb3f2d8d4d6a757e014f19d1fafa948a60">8cc3b8fb</a>.
+  </p>
+  <p>Affects: 10.1.10 to 10.1.39</p>
+</div>
+</body>
+</html>
+"""
+
 
 def test_parse_tomcat_security_multiple_fixed_sections_same_cve():
     advisories = parse_tomcat_security(TOMCAT_SECURITY_HTML)
@@ -108,7 +131,6 @@ def test_affected_packages_structure():
         url="https://tomcat.apache.org/security-10.html",
     )
 
-    # Validate package structure expectations
     for pkg in advisory.affected_packages:
         assert isinstance(pkg, AffectedPackageV2)
         assert isinstance(pkg.package, PackageURL)
@@ -143,3 +165,68 @@ def test_apache_and_maven_version_ranges_created(mock_get):
 
     for r in maven_ranges:
         assert isinstance(r, MavenVersionRange)
+
+
+def test_parse_tomcat_security_extracts_commit_urls():
+    advisories = parse_tomcat_security(TOMCAT_SECURITY_HTML_WITH_COMMITS)
+    assert len(advisories) == 1
+    adv = advisories[0]
+    assert adv.cve == "CVE-2025-31650"
+    assert len(adv.commit_urls) == 3
+    assert "cba1a0fe1289ee7f5dd46c61c38d1e1ac5437bff" in adv.commit_urls[0]
+    assert "1eef1dc459c45f1e421d8bd25ef340fc1cc34edc" in adv.commit_urls[1]
+    assert "8cc3b8fb3f2d8d4d6a757e014f19d1fafa948a60" in adv.commit_urls[2]
+    assert len(adv.reference_urls) == 3
+
+
+def test_parse_tomcat_security_extracts_gitbox_commits():
+    html = """
+    <html><body>
+    <h3 id="Fixed">Fixed 1.0</h3>
+    <div class="text">
+      <p><strong>Bug</strong><a href="CVE-2021-25329">CVE-2021-25329</a></p>
+      <p>Fixed with commit <a href="https://gitbox.apache.org/repos/asf?p=tomcat.git;a=commit;h=7b5269715a77">7b52697</a></p>
+      <p>Affects: 1.0</p>
+    </div>
+    </body></html>
+    """
+    advisories = parse_tomcat_security(html)
+    assert len(advisories) == 1
+    assert "7b5269715a77" in advisories[0].commit_urls[0]
+
+
+def test_get_commit_patches_creates_patch_data():
+    urls = [
+        "https://github.com/apache/tomcat/commit/b59099e4ca501a039510334ebe1024971cd6f959",
+        "https://github.com/apache/tomcat/commit/cba1a0fe1289ee7f5dd46c61c38d1e1ac5437bff",
+    ]
+    patches = get_commit_patches(urls)
+    assert len(patches) == 2
+    assert patches[0].commit_hash == "b59099e4ca501a039510334ebe1024971cd6f959"
+    assert patches[0].vcs_url == "https://github.com/apache/tomcat"
+    assert patches[1].commit_hash == "cba1a0fe1289ee7f5dd46c61c38d1e1ac5437bff"
+
+
+@patch("vulnerabilities.pipelines.v2_importers.apache_tomcat_importer.requests.get")
+def test_pipeline_populates_commit_patches_and_references(mock_get):
+    mock_get.return_value.content = TOMCAT_SECURITY_HTML_WITH_COMMITS.encode("utf-8")
+
+    pipeline = ApacheTomcatImporterPipeline()
+    pipeline.fetch_advisory_links = types.MethodType(
+        lambda self: ["https://tomcat.apache.org/security-10.html"],
+        pipeline,
+    )
+
+    advisory = list(pipeline.collect_advisories())[0]
+
+    assert len(advisory.affected_packages) == 2
+
+    for pkg in advisory.affected_packages:
+        assert len(pkg.fixed_by_commit_patches) == 3
+        for patch in pkg.fixed_by_commit_patches:
+            assert isinstance(patch, PackageCommitPatchData)
+            assert patch.vcs_url == "https://github.com/apache/tomcat"
+
+    assert len(advisory.references) == 3
+    for ref in advisory.references:
+        assert isinstance(ref, ReferenceV2)