From 7d3432e055dc63935ce6df2b56d655aadf88938c Mon Sep 17 00:00:00 2001
From: Max Resnick <max@ofmax.li>
Date: Tue, 2 Dec 2025 21:21:50 -0800
Subject: feat: init commit of tool

---
 dmarc_analyzer/extractor.py | 65 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 dmarc_analyzer/extractor.py

(limited to 'dmarc_analyzer/extractor.py')

diff --git a/dmarc_analyzer/extractor.py b/dmarc_analyzer/extractor.py
new file mode 100644
index 0000000..d12d67b
--- /dev/null
+++ b/dmarc_analyzer/extractor.py
@@ -0,0 +1,65 @@
+"""File extraction utilities for DMARC reports"""
+
+import gzip
+import zipfile
+import tempfile
+import os
+from pathlib import Path
+
+
+def extract_files(file_path):
+    """Extract XML content from gzip or zip files
+
+    Args:
+        file_path: Path to the compressed file
+
+    Returns:
+        str: XML content if successful, None otherwise
+    """
+    file_path = Path(file_path)
+
+    try:
+        if file_path.suffix == '.gz':
+            return _extract_gzip(file_path)
+        elif file_path.suffix == '.zip':
+            return _extract_zip(file_path)
+        else:
+            # Assume it's already XML
+            return file_path.read_text()
+    except Exception as e:
+        print(f"Error extracting {file_path}: {e}")
+        return None
+
+
+def _extract_gzip(file_path):
+    """Extract content from gzip file"""
+    with gzip.open(file_path, 'rt') as f:
+        return f.read()
+
+
+def _extract_zip(file_path):
+    """Extract content from zip file
+
+    For zip files, we look for XML files inside and return the first one
+    """
+    with zipfile.ZipFile(file_path, 'r') as zip_ref:
+        # List all files in the zip
+        file_list = zip_ref.namelist()
+
+        # Find the first XML file
+        xml_file = None
+        for filename in file_list:
+            if filename.lower().endswith('.xml'):
+                xml_file = filename
+                break
+
+        if xml_file:
+            with zip_ref.open(xml_file) as f:
+                return f.read().decode('utf-8')
+        else:
+            # If no XML file found, try the first file
+            if file_list:
+                with zip_ref.open(file_list[0]) as f:
+                    return f.read().decode('utf-8')
+
+    return None
\ No newline at end of file
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