初始化项目版本

This commit is contained in:
Axhub Make
2026-07-29 16:04:39 +08:00
commit 4305a1082b
2629 changed files with 760590 additions and 0 deletions

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"""
Validation modules for Word document processing.
"""
from .base import BaseSchemaValidator
from .docx import DOCXSchemaValidator
from .pptx import PPTXSchemaValidator
from .redlining import RedliningValidator
__all__ = [
"BaseSchemaValidator",
"DOCXSchemaValidator",
"PPTXSchemaValidator",
"RedliningValidator",
]

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"""
Base validator with common validation logic for document files.
"""
import re
from pathlib import Path
import defusedxml.minidom
from functools import lru_cache
import lxml.etree
from helpers import safe_extract
@lru_cache(maxsize=None)
def _load_schema(schema_path: str):
with open(schema_path, "rb") as xsd_file:
xsd_doc = lxml.etree.parse(
xsd_file, parser=lxml.etree.XMLParser(), base_url=schema_path
)
return lxml.etree.XMLSchema(xsd_doc)
class BaseSchemaValidator:
IGNORED_VALIDATION_ERRORS = [
"hyphenationZone",
"purl.org/dc/terms",
]
UNIQUE_ID_REQUIREMENTS = {
"comment": ("id", "file"),
"commentrangestart": ("id", "file"),
"commentrangeend": ("id", "file"),
"bookmarkstart": ("id", "file"),
"bookmarkend": ("id", "file"),
"sldid": ("id", "file"),
"sldmasterid": ("id", "global"),
"sldlayoutid": ("id", "global"),
"cm": ("authorid", "file"),
"sheet": ("sheetid", "file"),
"definedname": ("id", "file"),
"cxnsp": ("id", "file"),
"sp": ("id", "file"),
"pic": ("id", "file"),
"grpsp": ("id", "file"),
}
EXCLUDED_ID_CONTAINERS = {
"sectionlst",
}
ELEMENT_RELATIONSHIP_TYPES = {}
SCHEMA_MAPPINGS = {
"word": "ISO-IEC29500-4_2016/wml.xsd",
"ppt": "ISO-IEC29500-4_2016/pml.xsd",
"xl": "ISO-IEC29500-4_2016/sml.xsd",
"[Content_Types].xml": "ecma/fouth-edition/opc-contentTypes.xsd",
"app.xml": "ISO-IEC29500-4_2016/shared-documentPropertiesExtended.xsd",
"core.xml": "ecma/fouth-edition/opc-coreProperties.xsd",
"custom.xml": "ISO-IEC29500-4_2016/shared-documentPropertiesCustom.xsd",
".rels": "ecma/fouth-edition/opc-relationships.xsd",
"people.xml": "microsoft/wml-2012.xsd",
"commentsIds.xml": "microsoft/wml-cid-2016.xsd",
"commentsExtensible.xml": "microsoft/wml-cex-2018.xsd",
"commentsExtended.xml": "microsoft/wml-2012.xsd",
"chart": "ISO-IEC29500-4_2016/dml-chart.xsd",
"theme": "ISO-IEC29500-4_2016/dml-main.xsd",
"drawing": "ISO-IEC29500-4_2016/dml-main.xsd",
}
MC_NAMESPACE = "http://schemas.openxmlformats.org/markup-compatibility/2006"
XML_NAMESPACE = "http://www.w3.org/XML/1998/namespace"
PACKAGE_RELATIONSHIPS_NAMESPACE = (
"http://schemas.openxmlformats.org/package/2006/relationships"
)
OFFICE_RELATIONSHIPS_NAMESPACE = (
"http://schemas.openxmlformats.org/officeDocument/2006/relationships"
)
CONTENT_TYPES_NAMESPACE = (
"http://schemas.openxmlformats.org/package/2006/content-types"
)
MAIN_CONTENT_FOLDERS = {"word", "ppt", "xl"}
OOXML_NAMESPACES = {
"http://schemas.openxmlformats.org/officeDocument/2006/math",
"http://schemas.openxmlformats.org/officeDocument/2006/relationships",
"http://schemas.openxmlformats.org/schemaLibrary/2006/main",
"http://schemas.openxmlformats.org/drawingml/2006/main",
"http://schemas.openxmlformats.org/drawingml/2006/chart",
"http://schemas.openxmlformats.org/drawingml/2006/chartDrawing",
"http://schemas.openxmlformats.org/drawingml/2006/diagram",
"http://schemas.openxmlformats.org/drawingml/2006/picture",
"http://schemas.openxmlformats.org/drawingml/2006/spreadsheetDrawing",
"http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing",
"http://schemas.openxmlformats.org/wordprocessingml/2006/main",
"http://schemas.openxmlformats.org/presentationml/2006/main",
"http://schemas.openxmlformats.org/spreadsheetml/2006/main",
"http://schemas.openxmlformats.org/officeDocument/2006/sharedTypes",
"http://www.w3.org/XML/1998/namespace",
}
def __init__(self, unpacked_dir, original_file=None, verbose=False):
self.unpacked_dir = Path(unpacked_dir).resolve()
self.original_file = Path(original_file) if original_file else None
self.verbose = verbose
self.schemas_dir = Path(__file__).parent.parent / "schemas"
patterns = ["*.xml", "*.rels"]
self.xml_files = [
f for pattern in patterns for f in self.unpacked_dir.rglob(pattern)
]
if not self.xml_files:
print(f"Warning: No XML files found in {self.unpacked_dir}")
def validate(self):
raise NotImplementedError("Subclasses must implement the validate method")
def repair(self) -> int:
return self.repair_whitespace_preservation()
def repair_whitespace_preservation(self) -> int:
repairs = 0
for xml_file in self.xml_files:
try:
content = xml_file.read_text(encoding="utf-8")
dom = defusedxml.minidom.parseString(content)
pending = []
for elem in dom.getElementsByTagName("*"):
local_name = elem.tagName.rsplit(":", 1)[-1]
if local_name in ("t", "delText", "instrText", "delInstrText"):
text = "".join(
child.data
for child in elem.childNodes
if child.nodeType in (child.TEXT_NODE, child.CDATA_SECTION_NODE)
)
ws = (" ", "\t", "\n", "\r")
if text and (text.startswith(ws) or text.endswith(ws)):
if elem.getAttribute("xml:space") != "preserve":
elem.setAttribute("xml:space", "preserve")
text_preview = repr(text[:30]) + "..." if len(text) > 30 else repr(text)
pending.append(f" Repaired: {xml_file.name}: Added xml:space='preserve' to {elem.tagName}: {text_preview}")
if pending:
xml_file.write_bytes(dom.toxml(encoding="UTF-8"))
for message in pending:
print(message)
repairs += len(pending)
except Exception:
pass
return repairs
def validate_xml(self):
errors = []
for xml_file in self.xml_files:
try:
lxml.etree.parse(str(xml_file))
except lxml.etree.XMLSyntaxError as e:
errors.append(
f" {xml_file.relative_to(self.unpacked_dir)}: "
f"Line {e.lineno}: {e.msg}"
)
except Exception as e:
errors.append(
f" {xml_file.relative_to(self.unpacked_dir)}: "
f"Unexpected error: {str(e)}"
)
if errors:
print(f"FAILED - Found {len(errors)} XML violations:")
for error in errors:
print(error)
return False
else:
if self.verbose:
print("PASSED - All XML files are well-formed")
return True
def validate_namespaces(self):
errors = []
for xml_file in self.xml_files:
try:
root = lxml.etree.parse(str(xml_file)).getroot()
declared = set(root.nsmap.keys()) - {None}
for attr_val in [
v for k, v in root.attrib.items() if k.endswith("Ignorable")
]:
undeclared = set(attr_val.split()) - declared
errors.extend(
f" {xml_file.relative_to(self.unpacked_dir)}: "
f"Namespace '{ns}' in Ignorable but not declared"
for ns in undeclared
)
except lxml.etree.XMLSyntaxError:
continue
if errors:
print(f"FAILED - {len(errors)} namespace issues:")
for error in errors:
print(error)
return False
if self.verbose:
print("PASSED - All namespace prefixes properly declared")
return True
def validate_unique_ids(self):
errors = []
global_ids = {}
for xml_file in self.xml_files:
try:
root = lxml.etree.parse(str(xml_file)).getroot()
file_ids = {}
mc_elements = root.xpath(
".//mc:AlternateContent", namespaces={"mc": self.MC_NAMESPACE}
)
for elem in mc_elements:
elem.getparent().remove(elem)
for elem in root.iter():
if not hasattr(elem, "tag") or callable(elem.tag):
continue
tag = (
elem.tag.split("}")[-1].lower()
if "}" in elem.tag
else elem.tag.lower()
)
if tag in self.UNIQUE_ID_REQUIREMENTS:
in_excluded_container = any(
ancestor.tag.split("}")[-1].lower() in self.EXCLUDED_ID_CONTAINERS
for ancestor in elem.iterancestors()
)
if in_excluded_container:
continue
attr_name, scope = self.UNIQUE_ID_REQUIREMENTS[tag]
id_value = None
for attr, value in elem.attrib.items():
attr_local = (
attr.split("}")[-1].lower()
if "}" in attr
else attr.lower()
)
if attr_local == attr_name:
id_value = value
break
if id_value is not None:
if scope == "global":
if id_value in global_ids:
prev_file, prev_line, prev_tag = global_ids[
id_value
]
errors.append(
f" {xml_file.relative_to(self.unpacked_dir)}: "
f"Line {elem.sourceline}: Global ID '{id_value}' in <{tag}> "
f"already used in {prev_file} at line {prev_line} in <{prev_tag}>"
)
else:
global_ids[id_value] = (
xml_file.relative_to(self.unpacked_dir),
elem.sourceline,
tag,
)
elif scope == "file":
key = (tag, attr_name)
if key not in file_ids:
file_ids[key] = {}
if id_value in file_ids[key]:
prev_line = file_ids[key][id_value]
errors.append(
f" {xml_file.relative_to(self.unpacked_dir)}: "
f"Line {elem.sourceline}: Duplicate {attr_name}='{id_value}' in <{tag}> "
f"(first occurrence at line {prev_line})"
)
else:
file_ids[key][id_value] = elem.sourceline
except (lxml.etree.XMLSyntaxError, Exception) as e:
errors.append(
f" {xml_file.relative_to(self.unpacked_dir)}: Error: {e}"
)
if errors:
print(f"FAILED - Found {len(errors)} ID uniqueness violations:")
for error in errors:
print(error)
return False
else:
if self.verbose:
print("PASSED - All required IDs are unique")
return True
def validate_file_references(self):
errors = []
rels_files = list(self.unpacked_dir.rglob("*.rels"))
if not rels_files:
if self.verbose:
print("PASSED - No .rels files found")
return True
all_files = []
for file_path in self.unpacked_dir.rglob("*"):
if (
file_path.is_file()
and file_path.name != "[Content_Types].xml"
and not file_path.name.endswith(".rels")
):
all_files.append(file_path.resolve())
all_referenced_files = set()
if self.verbose:
print(
f"Found {len(rels_files)} .rels files and {len(all_files)} target files"
)
for rels_file in rels_files:
try:
rels_root = lxml.etree.parse(str(rels_file)).getroot()
rels_dir = rels_file.parent
referenced_files = set()
broken_refs = []
for rel in rels_root.findall(
".//ns:Relationship",
namespaces={"ns": self.PACKAGE_RELATIONSHIPS_NAMESPACE},
):
target = rel.get("Target")
if rel.get("TargetMode") == "External":
continue
if target and not target.startswith(
("http", "mailto:")
):
if target.startswith("/"):
target_path = self.unpacked_dir / target.lstrip("/")
elif rels_file.name == ".rels":
target_path = self.unpacked_dir / target
else:
base_dir = rels_dir.parent
target_path = base_dir / target
try:
target_path = target_path.resolve()
if target_path.exists() and target_path.is_file():
referenced_files.add(target_path)
all_referenced_files.add(target_path)
else:
broken_refs.append((target, rel.sourceline))
except (OSError, ValueError):
broken_refs.append((target, rel.sourceline))
if broken_refs:
rel_path = rels_file.relative_to(self.unpacked_dir)
for broken_ref, line_num in broken_refs:
errors.append(
f" {rel_path}: Line {line_num}: Broken reference to {broken_ref}"
)
except Exception as e:
rel_path = rels_file.relative_to(self.unpacked_dir)
errors.append(f" Error parsing {rel_path}: {e}")
unreferenced_files = set(all_files) - all_referenced_files
if unreferenced_files:
for unref_file in sorted(unreferenced_files):
unref_rel_path = unref_file.relative_to(self.unpacked_dir)
errors.append(f" Unreferenced file: {unref_rel_path}")
if errors:
print(f"FAILED - Found {len(errors)} relationship validation errors:")
for error in errors:
print(error)
print(
"CRITICAL: These errors will cause the document to appear corrupt. "
+ "Broken references MUST be fixed, "
+ "and unreferenced files MUST be referenced or removed."
)
return False
else:
if self.verbose:
print(
"PASSED - All references are valid and all files are properly referenced"
)
return True
def validate_all_relationship_ids(self):
import lxml.etree
errors = []
for xml_file in self.xml_files:
if xml_file.suffix == ".rels":
continue
rels_dir = xml_file.parent / "_rels"
rels_file = rels_dir / f"{xml_file.name}.rels"
if not rels_file.exists():
continue
try:
rels_root = lxml.etree.parse(str(rels_file)).getroot()
rid_to_type = {}
for rel in rels_root.findall(
f".//{{{self.PACKAGE_RELATIONSHIPS_NAMESPACE}}}Relationship"
):
rid = rel.get("Id")
rel_type = rel.get("Type", "")
if rid:
if rid in rid_to_type:
rels_rel_path = rels_file.relative_to(self.unpacked_dir)
errors.append(
f" {rels_rel_path}: Line {rel.sourceline}: "
f"Duplicate relationship ID '{rid}' (IDs must be unique)"
)
type_name = (
rel_type.split("/")[-1] if "/" in rel_type else rel_type
)
rid_to_type[rid] = type_name
xml_root = lxml.etree.parse(str(xml_file)).getroot()
r_ns = self.OFFICE_RELATIONSHIPS_NAMESPACE
rid_attrs_to_check = ["id", "embed", "link"]
for elem in xml_root.iter():
if not hasattr(elem, "tag") or callable(elem.tag):
continue
for attr_name in rid_attrs_to_check:
rid_attr = elem.get(f"{{{r_ns}}}{attr_name}")
if not rid_attr:
continue
xml_rel_path = xml_file.relative_to(self.unpacked_dir)
elem_name = (
elem.tag.split("}")[-1] if "}" in elem.tag else elem.tag
)
if rid_attr not in rid_to_type:
errors.append(
f" {xml_rel_path}: Line {elem.sourceline}: "
f"<{elem_name}> r:{attr_name} references non-existent relationship '{rid_attr}' "
f"(valid IDs: {', '.join(sorted(rid_to_type.keys())[:5])}{'...' if len(rid_to_type) > 5 else ''})"
)
elif attr_name == "id" and self.ELEMENT_RELATIONSHIP_TYPES:
expected_type = self._get_expected_relationship_type(
elem_name
)
if expected_type:
actual_type = rid_to_type[rid_attr]
if expected_type not in actual_type.lower():
errors.append(
f" {xml_rel_path}: Line {elem.sourceline}: "
f"<{elem_name}> references '{rid_attr}' which points to '{actual_type}' "
f"but should point to a '{expected_type}' relationship"
)
except Exception as e:
xml_rel_path = xml_file.relative_to(self.unpacked_dir)
errors.append(f" Error processing {xml_rel_path}: {e}")
if errors:
print(f"FAILED - Found {len(errors)} relationship ID reference errors:")
for error in errors:
print(error)
print("\nThese ID mismatches will cause the document to appear corrupt!")
return False
else:
if self.verbose:
print("PASSED - All relationship ID references are valid")
return True
def _get_expected_relationship_type(self, element_name):
elem_lower = element_name.lower()
if elem_lower in self.ELEMENT_RELATIONSHIP_TYPES:
return self.ELEMENT_RELATIONSHIP_TYPES[elem_lower]
if elem_lower.endswith("id") and len(elem_lower) > 2:
prefix = elem_lower[:-2]
if prefix.endswith("master"):
return prefix.lower()
elif prefix.endswith("layout"):
return prefix.lower()
else:
if prefix == "sld":
return "slide"
return prefix.lower()
if elem_lower.endswith("reference") and len(elem_lower) > 9:
prefix = elem_lower[:-9]
return prefix.lower()
return None
def validate_content_types(self):
errors = []
content_types_file = self.unpacked_dir / "[Content_Types].xml"
if not content_types_file.exists():
print("FAILED - [Content_Types].xml file not found")
return False
try:
root = lxml.etree.parse(str(content_types_file)).getroot()
declared_parts = set()
declared_extensions = set()
for override in root.findall(
f".//{{{self.CONTENT_TYPES_NAMESPACE}}}Override"
):
part_name = override.get("PartName")
if part_name is not None:
declared_parts.add(part_name.lstrip("/"))
for default in root.findall(
f".//{{{self.CONTENT_TYPES_NAMESPACE}}}Default"
):
extension = default.get("Extension")
if extension is not None:
declared_extensions.add(extension.lower())
declarable_roots = {
"sld",
"sldLayout",
"sldMaster",
"presentation",
"document",
"workbook",
"worksheet",
"theme",
}
media_extensions = {
"png": "image/png",
"jpg": "image/jpeg",
"jpeg": "image/jpeg",
"gif": "image/gif",
"bmp": "image/bmp",
"tiff": "image/tiff",
"wmf": "image/x-wmf",
"emf": "image/x-emf",
}
all_files = list(self.unpacked_dir.rglob("*"))
all_files = [f for f in all_files if f.is_file()]
for xml_file in self.xml_files:
path_str = str(xml_file.relative_to(self.unpacked_dir)).replace(
"\\", "/"
)
if any(
skip in path_str
for skip in [".rels", "[Content_Types]", "docProps/", "_rels/"]
):
continue
try:
root_tag = lxml.etree.parse(str(xml_file)).getroot().tag
root_name = root_tag.split("}")[-1] if "}" in root_tag else root_tag
if root_name in declarable_roots and path_str not in declared_parts:
errors.append(
f" {path_str}: File with <{root_name}> root not declared in [Content_Types].xml"
)
except Exception:
continue
for file_path in all_files:
if file_path.suffix.lower() in {".xml", ".rels"}:
continue
if file_path.name == "[Content_Types].xml":
continue
if "_rels" in file_path.parts or "docProps" in file_path.parts:
continue
extension = file_path.suffix.lstrip(".").lower()
if extension and extension not in declared_extensions:
if extension in media_extensions:
relative_path = file_path.relative_to(self.unpacked_dir)
errors.append(
f' {relative_path}: File with extension \'{extension}\' not declared in [Content_Types].xml - should add: <Default Extension="{extension}" ContentType="{media_extensions[extension]}"/>'
)
except Exception as e:
errors.append(f" Error parsing [Content_Types].xml: {e}")
if errors:
print(f"FAILED - Found {len(errors)} content type declaration errors:")
for error in errors:
print(error)
return False
else:
if self.verbose:
print(
"PASSED - All content files are properly declared in [Content_Types].xml"
)
return True
def validate_file_against_xsd(self, xml_file, verbose=False):
xml_file = Path(xml_file).resolve()
unpacked_dir = self.unpacked_dir.resolve()
is_valid, current_errors = self._validate_single_file_xsd(
xml_file, unpacked_dir
)
if is_valid is None:
return None, set()
elif is_valid:
return True, set()
original_errors = self._get_original_file_errors(xml_file)
assert current_errors is not None
new_errors = current_errors - original_errors
new_errors = {
e for e in new_errors
if not any(pattern in e for pattern in self.IGNORED_VALIDATION_ERRORS)
}
if new_errors:
if verbose:
relative_path = xml_file.relative_to(unpacked_dir)
print(f"FAILED - {relative_path}: {len(new_errors)} new error(s)")
for error in list(new_errors)[:3]:
truncated = error[:250] + "..." if len(error) > 250 else error
print(f" - {truncated}")
return False, new_errors
else:
if verbose:
print(
f"PASSED - No new errors (original had {len(current_errors)} errors)"
)
return True, set()
def validate_against_xsd(self):
new_errors = []
original_error_count = 0
valid_count = 0
skipped_count = 0
for xml_file in self.xml_files:
relative_path = str(xml_file.relative_to(self.unpacked_dir))
is_valid, new_file_errors = self.validate_file_against_xsd(
xml_file, verbose=False
)
if is_valid is None:
skipped_count += 1
continue
elif is_valid and not new_file_errors:
valid_count += 1
continue
elif is_valid:
original_error_count += 1
valid_count += 1
continue
new_errors.append(f" {relative_path}: {len(new_file_errors)} new error(s)")
for error in list(new_file_errors)[:3]:
new_errors.append(
f" - {error[:250]}..." if len(error) > 250 else f" - {error}"
)
if self.verbose:
print(f"Validated {len(self.xml_files)} files:")
print(f" - Valid: {valid_count}")
print(f" - Skipped (no schema): {skipped_count}")
if original_error_count:
print(f" - With original errors (ignored): {original_error_count}")
print(
f" - With NEW errors: {len(new_errors) > 0 and len([e for e in new_errors if not e.startswith(' ')]) or 0}"
)
if new_errors:
print("\nFAILED - Found NEW validation errors:")
for error in new_errors:
print(error)
return False
else:
if self.verbose:
print("\nPASSED - No new XSD validation errors introduced")
return True
def _get_schema_path(self, xml_file):
if xml_file.name in self.SCHEMA_MAPPINGS:
return self.schemas_dir / self.SCHEMA_MAPPINGS[xml_file.name]
if xml_file.suffix == ".rels":
return self.schemas_dir / self.SCHEMA_MAPPINGS[".rels"]
if "charts/" in str(xml_file) and xml_file.name.startswith("chart"):
return self.schemas_dir / self.SCHEMA_MAPPINGS["chart"]
if "theme/" in str(xml_file) and xml_file.name.startswith("theme"):
return self.schemas_dir / self.SCHEMA_MAPPINGS["theme"]
if xml_file.parent.name in self.MAIN_CONTENT_FOLDERS:
return self.schemas_dir / self.SCHEMA_MAPPINGS[xml_file.parent.name]
return None
def _clean_ignorable_namespaces(self, xml_doc):
xml_string = lxml.etree.tostring(xml_doc, encoding="unicode")
xml_copy = lxml.etree.fromstring(xml_string)
for elem in xml_copy.iter():
attrs_to_remove = []
for attr in elem.attrib:
if "{" in attr:
ns = attr.split("}")[0][1:]
if ns not in self.OOXML_NAMESPACES:
attrs_to_remove.append(attr)
for attr in attrs_to_remove:
del elem.attrib[attr]
self._remove_ignorable_elements(xml_copy)
return lxml.etree.ElementTree(xml_copy)
def _remove_ignorable_elements(self, root):
elements_to_remove = []
for elem in list(root):
if not hasattr(elem, "tag") or callable(elem.tag):
continue
tag_str = str(elem.tag)
if tag_str.startswith("{"):
ns = tag_str.split("}")[0][1:]
if ns not in self.OOXML_NAMESPACES:
elements_to_remove.append(elem)
continue
self._remove_ignorable_elements(elem)
for elem in elements_to_remove:
root.remove(elem)
def _preprocess_for_mc_ignorable(self, xml_doc):
root = xml_doc.getroot()
if f"{{{self.MC_NAMESPACE}}}Ignorable" in root.attrib:
del root.attrib[f"{{{self.MC_NAMESPACE}}}Ignorable"]
return xml_doc
def _preprocess_for_schema(self, xml_doc, relative_path):
return xml_doc
def _validate_single_file_xsd(self, xml_file, base_path, schema_path=None):
schema_path = schema_path or self._get_schema_path(xml_file)
if not schema_path:
return None, None
try:
schema = _load_schema(str(schema_path))
with open(xml_file, "r") as f:
xml_doc = lxml.etree.parse(f)
xml_doc, _ = self._remove_template_tags_from_text_nodes(xml_doc)
xml_doc = self._preprocess_for_mc_ignorable(xml_doc)
relative_path = xml_file.relative_to(base_path)
if (
relative_path.parts
and relative_path.parts[0] in self.MAIN_CONTENT_FOLDERS
):
xml_doc = self._clean_ignorable_namespaces(xml_doc)
xml_doc = self._preprocess_for_schema(xml_doc, relative_path)
if schema.validate(xml_doc):
return True, set()
else:
errors = set()
for error in schema.error_log:
errors.add(error.message)
return False, errors
except Exception as e:
return False, {str(e)}
def _get_original_file_errors(self, xml_file, schema_path=None):
if self.original_file is None:
return set()
import tempfile
import zipfile
xml_file = Path(xml_file).resolve()
unpacked_dir = self.unpacked_dir.resolve()
relative_path = xml_file.relative_to(unpacked_dir)
with tempfile.TemporaryDirectory() as temp_dir:
temp_path = Path(temp_dir)
try:
with zipfile.ZipFile(self.original_file, "r") as zip_ref:
safe_extract(zip_ref, temp_path)
except (zipfile.BadZipFile, ValueError, OSError):
return set()
original_xml_file = temp_path / relative_path
if not original_xml_file.exists():
return set()
is_valid, errors = self._validate_single_file_xsd(
original_xml_file, temp_path, schema_path=schema_path
)
return errors if errors else set()
def _remove_template_tags_from_text_nodes(self, xml_doc):
warnings = []
template_pattern = re.compile(r"\{\{[^}]*\}\}")
xml_string = lxml.etree.tostring(xml_doc, encoding="unicode")
xml_copy = lxml.etree.fromstring(xml_string)
def process_text_content(text, content_type):
if not text:
return text
matches = list(template_pattern.finditer(text))
if matches:
for match in matches:
warnings.append(
f"Found template tag in {content_type}: {match.group()}"
)
return template_pattern.sub("", text)
return text
for elem in xml_copy.iter():
if not hasattr(elem, "tag") or callable(elem.tag):
continue
tag_str = str(elem.tag)
if tag_str.endswith("}t") or tag_str == "t":
continue
elem.text = process_text_content(elem.text, "text content")
elem.tail = process_text_content(elem.tail, "tail content")
return lxml.etree.ElementTree(xml_copy), warnings
if __name__ == "__main__":
raise RuntimeError("This module should not be run directly.")

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@@ -0,0 +1,466 @@
"""
Validator for Word document XML files against XSD schemas.
"""
import random
import re
import tempfile
import zipfile
from pathlib import Path
import defusedxml.minidom
import lxml.etree
from helpers import safe_extract
from .base import BaseSchemaValidator
class DOCXSchemaValidator(BaseSchemaValidator):
WORD_2006_NAMESPACE = "http://schemas.openxmlformats.org/wordprocessingml/2006/main"
W14_NAMESPACE = "http://schemas.microsoft.com/office/word/2010/wordml"
W16CID_NAMESPACE = "http://schemas.microsoft.com/office/word/2016/wordml/cid"
ELEMENT_RELATIONSHIP_TYPES = {}
def validate(self):
if not self.validate_xml():
return False
all_valid = True
if not self.validate_namespaces():
all_valid = False
if not self.validate_unique_ids():
all_valid = False
if not self.validate_file_references():
all_valid = False
if not self.validate_content_types():
all_valid = False
if not self.validate_against_xsd():
all_valid = False
if not self.validate_whitespace_preservation():
all_valid = False
if not self.validate_deletions():
all_valid = False
if not self.validate_insertions():
all_valid = False
if not self.validate_all_relationship_ids():
all_valid = False
if not self.validate_id_constraints():
all_valid = False
if not self.validate_comment_markers():
all_valid = False
self.compare_paragraph_counts()
return all_valid
def validate_whitespace_preservation(self):
errors = []
for xml_file in self.xml_files:
if xml_file.name != "document.xml":
continue
try:
root = lxml.etree.parse(str(xml_file)).getroot()
for elem in root.iter(f"{{{self.WORD_2006_NAMESPACE}}}t"):
if elem.text:
text = elem.text
if re.search(r"^[ \t\n\r]", text) or re.search(
r"[ \t\n\r]$", text
):
xml_space_attr = f"{{{self.XML_NAMESPACE}}}space"
if (
xml_space_attr not in elem.attrib
or elem.attrib[xml_space_attr] != "preserve"
):
text_preview = (
repr(text)[:50] + "..."
if len(repr(text)) > 50
else repr(text)
)
errors.append(
f" {xml_file.relative_to(self.unpacked_dir)}: "
f"Line {elem.sourceline}: w:t element with whitespace missing xml:space='preserve': {text_preview}"
)
except (lxml.etree.XMLSyntaxError, Exception) as e:
errors.append(
f" {xml_file.relative_to(self.unpacked_dir)}: Error: {e}"
)
if errors:
print(f"FAILED - Found {len(errors)} whitespace preservation violations:")
for error in errors:
print(error)
return False
else:
if self.verbose:
print("PASSED - All whitespace is properly preserved")
return True
def validate_deletions(self):
errors = []
for xml_file in self.xml_files:
if xml_file.name != "document.xml":
continue
try:
root = lxml.etree.parse(str(xml_file)).getroot()
namespaces = {"w": self.WORD_2006_NAMESPACE}
for t_elem in root.xpath(".//w:del//w:t", namespaces=namespaces):
if t_elem.text:
text_preview = (
repr(t_elem.text)[:50] + "..."
if len(repr(t_elem.text)) > 50
else repr(t_elem.text)
)
errors.append(
f" {xml_file.relative_to(self.unpacked_dir)}: "
f"Line {t_elem.sourceline}: <w:t> found within <w:del>: {text_preview}"
)
for instr_elem in root.xpath(
".//w:del//w:instrText", namespaces=namespaces
):
text_preview = (
repr(instr_elem.text or "")[:50] + "..."
if len(repr(instr_elem.text or "")) > 50
else repr(instr_elem.text or "")
)
errors.append(
f" {xml_file.relative_to(self.unpacked_dir)}: "
f"Line {instr_elem.sourceline}: <w:instrText> found within <w:del> (use <w:delInstrText>): {text_preview}"
)
except (lxml.etree.XMLSyntaxError, Exception) as e:
errors.append(
f" {xml_file.relative_to(self.unpacked_dir)}: Error: {e}"
)
if errors:
print(f"FAILED - Found {len(errors)} deletion validation violations:")
for error in errors:
print(error)
return False
else:
if self.verbose:
print("PASSED - No w:t elements found within w:del elements")
return True
def count_paragraphs_in_unpacked(self):
count = 0
for xml_file in self.xml_files:
if xml_file.name != "document.xml":
continue
try:
root = lxml.etree.parse(str(xml_file)).getroot()
paragraphs = root.findall(f".//{{{self.WORD_2006_NAMESPACE}}}p")
count = len(paragraphs)
except Exception as e:
print(f"Error counting paragraphs in unpacked document: {e}")
return count
def count_paragraphs_in_original(self):
original = self.original_file
if original is None:
return 0
count = 0
try:
with tempfile.TemporaryDirectory() as temp_dir:
with zipfile.ZipFile(original, "r") as zip_ref:
safe_extract(zip_ref, Path(temp_dir))
doc_xml_path = temp_dir + "/word/document.xml"
root = lxml.etree.parse(doc_xml_path).getroot()
paragraphs = root.findall(f".//{{{self.WORD_2006_NAMESPACE}}}p")
count = len(paragraphs)
except Exception as e:
print(f"Error counting paragraphs in original document: {e}")
return count
def validate_insertions(self):
errors = []
for xml_file in self.xml_files:
if xml_file.name != "document.xml":
continue
try:
root = lxml.etree.parse(str(xml_file)).getroot()
namespaces = {"w": self.WORD_2006_NAMESPACE}
invalid_elements = root.xpath(
".//w:ins//w:delText[not(ancestor::w:del)]", namespaces=namespaces
)
for elem in invalid_elements:
text_preview = (
repr(elem.text or "")[:50] + "..."
if len(repr(elem.text or "")) > 50
else repr(elem.text or "")
)
errors.append(
f" {xml_file.relative_to(self.unpacked_dir)}: "
f"Line {elem.sourceline}: <w:delText> within <w:ins>: {text_preview}"
)
except (lxml.etree.XMLSyntaxError, Exception) as e:
errors.append(
f" {xml_file.relative_to(self.unpacked_dir)}: Error: {e}"
)
if errors:
print(f"FAILED - Found {len(errors)} insertion validation violations:")
for error in errors:
print(error)
return False
else:
if self.verbose:
print("PASSED - No w:delText elements within w:ins elements")
return True
def compare_paragraph_counts(self):
new_count = self.count_paragraphs_in_unpacked()
if self.original_file is None:
print(f"\nParagraphs: {new_count}")
return
original_count = self.count_paragraphs_in_original()
diff = new_count - original_count
diff_str = f"+{diff}" if diff > 0 else str(diff)
print(f"\nParagraphs: {original_count}{new_count} ({diff_str})")
def _parse_id_value(self, val: str, base: int = 16) -> int:
return int(val, base)
def validate_id_constraints(self):
errors = []
para_id_attr = f"{{{self.W14_NAMESPACE}}}paraId"
durable_id_attr = f"{{{self.W16CID_NAMESPACE}}}durableId"
for xml_file in self.xml_files:
try:
for elem in lxml.etree.parse(str(xml_file)).iter():
if val := elem.get(para_id_attr):
try:
if self._parse_id_value(val, base=16) >= 0x80000000:
errors.append(
f" {xml_file.name}:{elem.sourceline}: paraId={val} >= 0x80000000"
)
except ValueError:
errors.append(
f" {xml_file.name}:{elem.sourceline}: "
f"paraId={val} is not valid hex"
)
if val := elem.get(durable_id_attr):
if xml_file.name == "numbering.xml":
try:
if self._parse_id_value(val, base=10) >= 0x7FFFFFFF:
errors.append(
f" {xml_file.name}:{elem.sourceline}: "
f"durableId={val} >= 0x7FFFFFFF"
)
except ValueError:
errors.append(
f" {xml_file.name}:{elem.sourceline}: "
f"durableId={val} must be decimal in numbering.xml"
)
else:
try:
if self._parse_id_value(val, base=16) >= 0x7FFFFFFF:
errors.append(
f" {xml_file.name}:{elem.sourceline}: "
f"durableId={val} >= 0x7FFFFFFF"
)
except ValueError:
errors.append(
f" {xml_file.name}:{elem.sourceline}: "
f"durableId={val} is not valid hex"
)
except lxml.etree.XMLSyntaxError:
continue
if errors:
print(f"FAILED - {len(errors)} ID constraint violations:")
for e in errors:
print(e)
elif self.verbose:
print("PASSED - All paraId/durableId values within constraints")
return not errors
def validate_comment_markers(self):
errors = []
document_xml = None
comments_xml = None
for xml_file in self.xml_files:
if xml_file.name == "document.xml" and "word" in str(xml_file):
document_xml = xml_file
elif xml_file.name == "comments.xml":
comments_xml = xml_file
if not document_xml:
if self.verbose:
print("PASSED - No document.xml found (skipping comment validation)")
return True
try:
doc_root = lxml.etree.parse(str(document_xml)).getroot()
namespaces = {"w": self.WORD_2006_NAMESPACE}
range_starts = {
elem.get(f"{{{self.WORD_2006_NAMESPACE}}}id")
for elem in doc_root.xpath(
".//w:commentRangeStart", namespaces=namespaces
)
}
range_ends = {
elem.get(f"{{{self.WORD_2006_NAMESPACE}}}id")
for elem in doc_root.xpath(
".//w:commentRangeEnd", namespaces=namespaces
)
}
references = {
elem.get(f"{{{self.WORD_2006_NAMESPACE}}}id")
for elem in doc_root.xpath(
".//w:commentReference", namespaces=namespaces
)
}
orphaned_ends = range_ends - range_starts
for comment_id in sorted(
orphaned_ends, key=lambda x: int(x) if x and x.isdigit() else 0
):
errors.append(
f' document.xml: commentRangeEnd id="{comment_id}" has no matching commentRangeStart'
)
orphaned_starts = range_starts - range_ends
for comment_id in sorted(
orphaned_starts, key=lambda x: int(x) if x and x.isdigit() else 0
):
errors.append(
f' document.xml: commentRangeStart id="{comment_id}" has no matching commentRangeEnd'
)
comment_ids = set()
if comments_xml and comments_xml.exists():
comments_root = lxml.etree.parse(str(comments_xml)).getroot()
comment_ids = {
elem.get(f"{{{self.WORD_2006_NAMESPACE}}}id")
for elem in comments_root.xpath(
".//w:comment", namespaces=namespaces
)
}
marker_ids = range_starts | range_ends | references
invalid_refs = marker_ids - comment_ids
for comment_id in sorted(
invalid_refs, key=lambda x: int(x) if x and x.isdigit() else 0
):
if comment_id:
errors.append(
f' document.xml: marker id="{comment_id}" references non-existent comment'
)
except (lxml.etree.XMLSyntaxError, Exception) as e:
errors.append(f" Error parsing XML: {e}")
if errors:
print(f"FAILED - {len(errors)} comment marker violations:")
for error in errors:
print(error)
return False
else:
if self.verbose:
print("PASSED - All comment markers properly paired")
return True
def repair(self) -> int:
repairs = super().repair()
repairs += self.repair_durableId()
return repairs
def repair_durableId(self) -> int:
DURABLE_ID_ATTRS = ("w16cid:durableId", "w16cex:durableId")
repairs = 0
renames: dict = {}
for xml_file in self.xml_files:
try:
content = xml_file.read_text(encoding="utf-8")
dom = defusedxml.minidom.parseString(content)
is_numbering = xml_file.name == "numbering.xml"
base = 10 if is_numbering else 16
pending = []
seen_in_file = set()
modified = False
for elem in dom.getElementsByTagName("*"):
for attr_name in DURABLE_ID_ATTRS:
if not elem.hasAttribute(attr_name):
continue
durable_id = elem.getAttribute(attr_name)
try:
key = self._parse_id_value(durable_id, base=base)
needs_repair = key >= 0x7FFFFFFF
except ValueError:
key = durable_id
needs_repair = True
if needs_repair:
if key in seen_in_file:
value = random.randint(1, 0x7FFFFFFE)
else:
seen_in_file.add(key)
if key not in renames:
renames[key] = random.randint(1, 0x7FFFFFFE)
value = renames[key]
new_id = str(value) if is_numbering else f"{value:08X}"
elem.setAttribute(attr_name, new_id)
pending.append(
f" Repaired: {xml_file.name}: durableId {durable_id}{new_id}"
)
modified = True
if modified:
xml_file.write_bytes(dom.toxml(encoding="UTF-8"))
for message in pending:
print(message)
repairs += len(pending)
except Exception:
pass
return repairs
if __name__ == "__main__":
raise RuntimeError("This module should not be run directly.")

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@@ -0,0 +1,441 @@
"""
Validator for PowerPoint presentation XML files against XSD schemas.
"""
import re
from pathlib import Path
from helpers import opc_target, rels_source_part, safe_extract
from .base import BaseSchemaValidator
class PPTXSchemaValidator(BaseSchemaValidator):
PRESENTATIONML_NAMESPACE = (
"http://schemas.openxmlformats.org/presentationml/2006/main"
)
ELEMENT_RELATIONSHIP_TYPES = {
"sldid": "slide",
"sldmasterid": "slidemaster",
"notesmasterid": "notesmaster",
"sldlayoutid": "slidelayout",
"themeid": "theme",
"tablestyleid": "tablestyles",
}
def validate(self):
if not self.validate_xml():
return False
all_valid = True
if not self.validate_namespaces():
all_valid = False
if not self.validate_unique_ids():
all_valid = False
if not self.validate_uuid_ids():
all_valid = False
if not self.validate_file_references():
all_valid = False
if not self.validate_slide_layout_ids():
all_valid = False
if not self.validate_content_types():
all_valid = False
if not self.validate_against_xsd():
all_valid = False
if not self.validate_notes_slide_references():
all_valid = False
if not self.validate_all_relationship_ids():
all_valid = False
if not self.validate_no_duplicate_slide_layouts():
all_valid = False
if not self.validate_master_theme_uniqueness():
all_valid = False
if not self.validate_charts():
all_valid = False
if not self.validate_slides():
all_valid = False
return all_valid
def _package_map(self) -> dict:
wanted = []
wanted += list(self.unpacked_dir.glob("[[]Content_Types[]].xml"))
wanted += list(self.unpacked_dir.glob("ppt/presentation.xml"))
wanted += list(self.unpacked_dir.glob("ppt/theme/*.xml"))
wanted += list(self.unpacked_dir.glob("ppt/theme/_rels/*.rels"))
wanted += list(self.unpacked_dir.glob("ppt/charts/chart*.xml"))
for group in ("slideMasters", "notesMasters", "handoutMasters"):
wanted += list(self.unpacked_dir.glob(f"ppt/{group}/*.xml"))
wanted += list(self.unpacked_dir.glob(f"ppt/{group}/_rels/*.rels"))
return {
p.relative_to(self.unpacked_dir).as_posix(): p.read_bytes()
for p in wanted
if p.is_file()
}
def validate_master_theme_uniqueness(self):
from helpers.pptx_theme import _NOTES_MASTERS, live_shared_master_themes
shared = live_shared_master_themes(self._package_map())
if shared:
print(f"FAILED - Found {len(shared)} master(s) sharing a theme part:")
for message in shared:
print(f" {message}")
if any(m.startswith(_NOTES_MASTERS) for m in shared):
print(" Fix: in ppt/presentation.xml, move <p:notesMasterIdLst> back to "
"directly after <p:sldIdLst>. PowerPoint reads that happily.")
else:
print(" Fix: give each master its own theme part.")
return False
if self.verbose:
print("PASSED - No master shares a theme part in a way PowerPoint refuses")
return True
def validate_charts(self):
from helpers.pptx_chart import find_chart_problems
problems = find_chart_problems(self._package_map())
if problems:
print(f"FAILED - Found {len(problems)} chart problem(s) PowerPoint rejects:")
for message in problems:
print(f" {message}")
return False
if self.verbose:
print("PASSED - Charts satisfy the constraints PowerPoint enforces")
return True
def _original_slide_defects(self, schema) -> set[str]:
import tempfile
import zipfile
from helpers.pptx_slide import SLIDE_PART_RE, fatal_slide_errors
if self.original_file is None:
return set()
found: set[str] = set()
with tempfile.TemporaryDirectory() as temp_dir:
temp_path = Path(temp_dir)
try:
with zipfile.ZipFile(self.original_file, "r") as zf:
safe_extract(zf, temp_path)
except (zipfile.BadZipFile, ValueError, OSError):
return set()
for part in sorted(temp_path.rglob("*.xml")):
relative = part.relative_to(temp_path).as_posix()
if not SLIDE_PART_RE.fullmatch(relative):
continue
ok, errors = self._validate_single_file_xsd(
part.resolve(), temp_path.resolve(), schema_path=schema
)
if ok is None or ok or not errors:
continue
found |= set(fatal_slide_errors(set(errors)))
return found
def validate_slides(self):
from helpers.pptx_slide import (
SLIDE_PART_RE,
fatal_slide_errors,
is_schema_verdict,
)
schema = self.schemas_dir / self.SCHEMA_MAPPINGS["ppt"]
inherited = self._original_slide_defects(schema)
problems: list[str] = []
broken: list[str] = []
for xml_file in self.xml_files:
relative = xml_file.relative_to(self.unpacked_dir).as_posix()
if not SLIDE_PART_RE.fullmatch(relative):
continue
ok, errors = self._validate_single_file_xsd(
xml_file.resolve(), self.unpacked_dir.resolve(), schema_path=schema
)
if ok is None or not errors:
continue
unreadable = [f"{relative}: {e}" for e in errors if not is_schema_verdict(e)]
if unreadable:
broken.extend(unreadable)
continue
if ok:
continue
for message in fatal_slide_errors(set(errors)):
if message in inherited:
continue
problems.append(f"{relative}: {message}")
if broken:
print(f"FAILED - Could not check {len(broken)} slide part(s):")
for message in sorted(broken):
print(f" {message[:240]}")
if problems:
print(f"FAILED - Found {len(problems)} slide problem(s) PowerPoint rejects:")
for message in sorted(problems):
print(f" {message[:240]}")
if broken or problems:
return False
if self.verbose:
print("PASSED - Slide XML has none of the defects PowerPoint refuses")
return True
def _get_schema_path(self, xml_file):
if xml_file.parent.name == "charts" and xml_file.name.startswith("chart"):
return None
return super()._get_schema_path(xml_file)
def _preprocess_for_schema(self, xml_doc, relative_path):
if relative_path.as_posix() != "ppt/presentation.xml":
return xml_doc
root = xml_doc.getroot()
ns = f"{{{self.PRESENTATIONML_NAMESPACE}}}"
notes = root.find(f"{ns}notesMasterIdLst")
slides = root.find(f"{ns}sldIdLst")
if notes is None or slides is None:
return xml_doc
children = list(root)
if children.index(notes) < children.index(slides):
return xml_doc
root.remove(notes)
root.insert(list(root).index(slides), notes)
return xml_doc
def validate_uuid_ids(self):
import lxml.etree
errors = []
uuid_pattern = re.compile(
r"^[\{\(]?[0-9A-Fa-f]{8}-?[0-9A-Fa-f]{4}-?[0-9A-Fa-f]{4}-?[0-9A-Fa-f]{4}-?[0-9A-Fa-f]{12}[\}\)]?$"
)
for xml_file in self.xml_files:
try:
root = lxml.etree.parse(str(xml_file)).getroot()
for elem in root.iter():
for attr, value in elem.attrib.items():
attr_name = attr.split("}")[-1].lower()
if attr_name == "id" or attr_name.endswith("id"):
if self._looks_like_uuid(value):
if not uuid_pattern.match(value):
errors.append(
f" {xml_file.relative_to(self.unpacked_dir)}: "
f"Line {elem.sourceline}: ID '{value}' appears to be a UUID but contains invalid hex characters"
)
except (lxml.etree.XMLSyntaxError, Exception) as e:
errors.append(
f" {xml_file.relative_to(self.unpacked_dir)}: Error: {e}"
)
if errors:
print(f"FAILED - Found {len(errors)} UUID ID validation errors:")
for error in errors:
print(error)
return False
else:
if self.verbose:
print("PASSED - All UUID-like IDs contain valid hex values")
return True
def _looks_like_uuid(self, value):
clean_value = value.strip("{}()").replace("-", "")
return len(clean_value) == 32 and all(c.isalnum() for c in clean_value)
def validate_slide_layout_ids(self):
import lxml.etree
errors = []
slide_masters = list(self.unpacked_dir.glob("ppt/slideMasters/*.xml"))
if not slide_masters:
if self.verbose:
print("PASSED - No slide masters found")
return True
for slide_master in slide_masters:
try:
root = lxml.etree.parse(str(slide_master)).getroot()
rels_file = slide_master.parent / "_rels" / f"{slide_master.name}.rels"
if not rels_file.exists():
errors.append(
f" {slide_master.relative_to(self.unpacked_dir)}: "
f"Missing relationships file: {rels_file.relative_to(self.unpacked_dir)}"
)
continue
rels_root = lxml.etree.parse(str(rels_file)).getroot()
valid_layout_rids = set()
for rel in rels_root.findall(
f".//{{{self.PACKAGE_RELATIONSHIPS_NAMESPACE}}}Relationship"
):
rel_type = rel.get("Type", "")
if "slideLayout" in rel_type:
valid_layout_rids.add(rel.get("Id"))
for sld_layout_id in root.findall(
f".//{{{self.PRESENTATIONML_NAMESPACE}}}sldLayoutId"
):
r_id = sld_layout_id.get(
f"{{{self.OFFICE_RELATIONSHIPS_NAMESPACE}}}id"
)
layout_id = sld_layout_id.get("id")
if r_id and r_id not in valid_layout_rids:
errors.append(
f" {slide_master.relative_to(self.unpacked_dir)}: "
f"Line {sld_layout_id.sourceline}: sldLayoutId with id='{layout_id}' "
f"references r:id='{r_id}' which is not found in slide layout relationships"
)
except (lxml.etree.XMLSyntaxError, Exception) as e:
errors.append(
f" {slide_master.relative_to(self.unpacked_dir)}: Error: {e}"
)
if errors:
print(f"FAILED - Found {len(errors)} slide layout ID validation errors:")
for error in errors:
print(error)
print(
"Remove invalid references or add missing slide layouts to the relationships file."
)
return False
else:
if self.verbose:
print("PASSED - All slide layout IDs reference valid slide layouts")
return True
def validate_no_duplicate_slide_layouts(self):
import lxml.etree
errors = []
slide_rels_files = list(self.unpacked_dir.glob("ppt/slides/_rels/*.xml.rels"))
for rels_file in slide_rels_files:
try:
root = lxml.etree.parse(str(rels_file)).getroot()
layout_rels = [
rel
for rel in root.findall(
f".//{{{self.PACKAGE_RELATIONSHIPS_NAMESPACE}}}Relationship"
)
if "slideLayout" in rel.get("Type", "")
]
if len(layout_rels) > 1:
errors.append(
f" {rels_file.relative_to(self.unpacked_dir)}: has {len(layout_rels)} slideLayout references"
)
except Exception as e:
errors.append(
f" {rels_file.relative_to(self.unpacked_dir)}: Error: {e}"
)
if errors:
print("FAILED - Found slides with duplicate slideLayout references:")
for error in errors:
print(error)
return False
else:
if self.verbose:
print("PASSED - All slides have exactly one slideLayout reference")
return True
def validate_notes_slide_references(self):
import lxml.etree
errors = []
notes_slide_references = {}
slide_rels_files = list(self.unpacked_dir.glob("ppt/slides/_rels/*.xml.rels"))
if not slide_rels_files:
if self.verbose:
print("PASSED - No slide relationship files found")
return True
for rels_file in slide_rels_files:
try:
root = lxml.etree.parse(str(rels_file)).getroot()
for rel in root.findall(
f".//{{{self.PACKAGE_RELATIONSHIPS_NAMESPACE}}}Relationship"
):
rel_type = rel.get("Type", "")
if "notesSlide" in rel_type:
part = opc_target(
rel.get("Target", ""),
rels_source_part(rels_file, self.unpacked_dir),
rel.get("TargetMode", ""),
)
if part:
slide_name = rels_file.stem.replace(
".xml", ""
)
notes_slide_references.setdefault(part, []).append(
(slide_name, rels_file)
)
except (lxml.etree.XMLSyntaxError, Exception) as e:
errors.append(
f" {rels_file.relative_to(self.unpacked_dir)}: Error: {e}"
)
for target, references in notes_slide_references.items():
if len(references) > 1:
slide_names = [ref[0] for ref in references]
errors.append(
f" Notes slide '{target}' is referenced by multiple slides: {', '.join(slide_names)}"
)
for slide_name, rels_file in references:
errors.append(f" - {rels_file.relative_to(self.unpacked_dir)}")
if errors:
print(
f"FAILED - Found {len([e for e in errors if not e.startswith(' ')])} notes slide reference validation errors:"
)
for error in errors:
print(error)
print("Each slide may optionally have its own slide file.")
return False
else:
if self.verbose:
print("PASSED - All notes slide references are unique")
return True
if __name__ == "__main__":
raise RuntimeError("This module should not be run directly.")

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"""
Validator for tracked changes in Word documents.
Detects untracked edits in word/document.xml: text that differs from the
original without a <w:ins>/<w:del> wrapper recording it. The tracked changes
that are new relative to the original are undone, and the result is compared
against the original; whatever text still differs was edited without being
tracked.
Only the document body is compared. Headers, footers, footnotes and endnotes
are separate parts and are not checked.
"""
import subprocess
import tempfile
import zipfile
from pathlib import Path
import defusedxml.ElementTree as ET
from defusedxml.common import DefusedXmlException
from helpers import rendered_text, safe_extract
class RedliningValidator:
def __init__(self, unpacked_dir, original_docx, verbose=False):
self.unpacked_dir = Path(unpacked_dir)
self.original_docx = Path(original_docx)
self.verbose = verbose
self.namespaces = {
"w": "http://schemas.openxmlformats.org/wordprocessingml/2006/main"
}
def repair(self) -> int:
return 0
def validate(self):
modified_file = self.unpacked_dir / "word" / "document.xml"
if not modified_file.exists():
print(f"FAILED - Modified document.xml not found at {modified_file}")
return False
with tempfile.TemporaryDirectory() as temp_dir:
temp_path = Path(temp_dir)
try:
with zipfile.ZipFile(self.original_docx, "r") as zip_ref:
safe_extract(zip_ref, temp_path)
except Exception as e:
print(f"FAILED - Error unpacking original docx: {e}")
return False
original_file = temp_path / "word" / "document.xml"
if not original_file.exists():
print(
f"FAILED - Original document.xml not found in {self.original_docx}"
)
return False
try:
modified_tree = ET.parse(modified_file)
modified_root = modified_tree.getroot()
original_tree = ET.parse(original_file)
original_root = original_tree.getroot()
except (ET.ParseError, DefusedXmlException) as e:
print(f"FAILED - Error parsing XML files: {e}")
return False
new_changes = self._new_tracked_changes(original_root, modified_root)
self._remove_tracked_changes(modified_root, new_changes)
modified_text = self._extract_text_content(modified_root)
original_text = self._extract_text_content(original_root)
if modified_text != original_text:
error_message = self._generate_detailed_diff(
original_text, modified_text
)
print(error_message)
return False
if self.verbose:
print(
f"PASSED - All {len(new_changes)} change(s) against the original "
"are properly tracked"
)
return True
def _tracked_change_elements(self, root):
ins_tag = f"{{{self.namespaces['w']}}}ins"
del_tag = f"{{{self.namespaces['w']}}}del"
return [elem for elem in root.iter() if elem.tag in (ins_tag, del_tag)]
def _rendered_text(self, elem):
preserve = elem.get("{http://www.w3.org/XML/1998/namespace}space") == "preserve"
return rendered_text(elem.text or "", preserve)
def _text_elements(self, elem):
w = self.namespaces["w"]
return [
node
for node in elem.iter()
if node.tag in (f"{{{w}}}t", f"{{{w}}}delText")
]
def _tracked_change_key(self, elem):
w = self.namespaces["w"]
text = "".join(self._rendered_text(node) for node in self._text_elements(elem))
return (elem.tag, elem.get(f"{{{w}}}author"), elem.get(f"{{{w}}}date"), text)
def _new_tracked_changes(self, original_root, modified_root):
original = self._tracked_change_elements(original_root)
modified = self._tracked_change_elements(modified_root)
pool = {}
for elem in original:
pool.setdefault(self._tracked_change_key(elem), []).append(elem)
matched, leftover = set(), []
for elem in modified:
bucket = pool.get(self._tracked_change_key(elem))
if bucket:
matched.add(bucket.pop())
else:
leftover.append(elem)
def group(elem):
return self._tracked_change_key(elem)[:3]
def text_of(elems):
return "".join(self._tracked_change_key(e)[3] for e in elems)
unmatched_original = {}
for elem in original:
if elem not in matched:
unmatched_original.setdefault(group(elem), []).append(elem)
by_group = {}
for elem in leftover:
by_group.setdefault(group(elem), []).append(elem)
new = set()
for key, elems in by_group.items():
rebuilt = text_of(elems)
if rebuilt and rebuilt == text_of(unmatched_original.get(key, [])):
continue
new.update(elems)
return new
def _generate_detailed_diff(self, original_text, modified_text):
error_parts = [
"FAILED - Document text doesn't match after removing the tracked changes",
"",
"Likely causes:",
" 1. Modified text inside another author's <w:ins> or <w:del> tags",
" 2. Made edits without proper tracked changes",
" 3. Didn't nest <w:del> inside <w:ins> when deleting another's insertion",
" 4. Rewrote another author's <w:ins>/<w:del> and changed its text on",
" the way. A tracked change from the original is recognised by its",
" author, date and text; anything that doesn't reproduce one exactly",
" reads as new, and the text it carried is reported missing.",
"",
"For pre-redlined documents, use correct patterns:",
" - To reject another's INSERTION: Nest <w:del> inside their <w:ins>",
" - To reject PART of one: nest <w:del> around only the runs you reject.",
" Their <w:ins> may be split around it, so long as the pieces keep",
" their author and date and still spell out the same text.",
" - To restore another's DELETION: Add new <w:ins> AFTER their <w:del>",
"",
]
git_diff = self._get_git_word_diff(original_text, modified_text)
if git_diff:
error_parts.extend(["Differences:", "============", git_diff])
else:
error_parts.append("Unable to generate word diff (git not available)")
return "\n".join(error_parts)
def _get_git_word_diff(self, original_text, modified_text):
try:
with tempfile.TemporaryDirectory() as temp_dir:
temp_path = Path(temp_dir)
original_file = temp_path / "original.txt"
modified_file = temp_path / "modified.txt"
original_file.write_text(original_text, encoding="utf-8")
modified_file.write_text(modified_text, encoding="utf-8")
result = subprocess.run(
[
"git",
"diff",
"--word-diff=plain",
"--word-diff-regex=.",
"-U0",
"--no-index",
str(original_file),
str(modified_file),
],
capture_output=True,
text=True,
)
if result.stdout.strip():
lines = result.stdout.split("\n")
content_lines = []
in_content = False
for line in lines:
if line.startswith("@@"):
in_content = True
continue
if in_content and line.strip():
content_lines.append(line)
if content_lines:
return "\n".join(content_lines)
result = subprocess.run(
[
"git",
"diff",
"--word-diff=plain",
"-U0",
"--no-index",
str(original_file),
str(modified_file),
],
capture_output=True,
text=True,
)
if result.stdout.strip():
lines = result.stdout.split("\n")
content_lines = []
in_content = False
for line in lines:
if line.startswith("@@"):
in_content = True
continue
if in_content and line.strip():
content_lines.append(line)
return "\n".join(content_lines)
except (subprocess.CalledProcessError, FileNotFoundError, Exception):
pass
return None
def _remove_tracked_changes(self, root, targets):
ins_tag = f"{{{self.namespaces['w']}}}ins"
del_tag = f"{{{self.namespaces['w']}}}del"
for parent in root.iter():
to_remove = []
for child in parent:
if child.tag == ins_tag and child in targets:
to_remove.append(child)
for elem in to_remove:
parent.remove(elem)
deltext_tag = f"{{{self.namespaces['w']}}}delText"
t_tag = f"{{{self.namespaces['w']}}}t"
for parent in root.iter():
to_process = []
for child in parent:
if child.tag == del_tag and child in targets:
to_process.append((child, list(parent).index(child)))
for del_elem, del_index in reversed(to_process):
for elem in del_elem.iter():
if elem.tag == deltext_tag:
elem.tag = t_tag
for child in reversed(list(del_elem)):
parent.insert(del_index, child)
parent.remove(del_elem)
def _extract_text_content(self, root):
p_tag = f"{{{self.namespaces['w']}}}p"
t_tag = f"{{{self.namespaces['w']}}}t"
paragraphs = []
for p_elem in root.findall(f".//{p_tag}"):
text_parts = []
for t_elem in p_elem.findall(f".//{t_tag}"):
text_parts.append(self._rendered_text(t_elem))
paragraph_text = "".join(text_parts)
if paragraph_text:
paragraphs.append(paragraph_text)
return "\n".join(paragraphs)
if __name__ == "__main__":
raise RuntimeError("This module should not be run directly.")