211 lines
8.5 KiB
Python
211 lines
8.5 KiB
Python
import os
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import csv
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import requests
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import time
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import re
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from datetime import datetime
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from msal import ConfidentialClientApplication
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from urllib.parse import urlparse, quote
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def sanitize_filename(name):
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\"\"\"Removes invalid characters and handles Unicode whitespace for Windows.\"\"\"
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if not name:
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return \"unnamed_item\"
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# Handle Unicode non-breaking spaces (common in SharePoint names)
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name = name.replace('\u00A0', ' ').replace('\u200b', '')
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# Illegal characters: < > : \" / \ | ? *
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invalid_chars = '<>:\"/\\\\|?*'
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for char in invalid_chars:
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name = name.replace(char, '_')
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# Control characters (0-31)
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name = \"\".join(c for c in name if ord(c) >= 32)
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# Windows doesn't like trailing spaces or dots
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name = name.strip(' .')
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# Reserved names
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reserved_names = {\"CON\", \"PRN\", \"AUX\", \"NUL\", \"COM1\", \"COM2\", \"COM3\", \"COM4\", \"COM5\", \"COM6\", \"COM7\", \"COM8\", \"COM9\",
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\"LPT1\", \"LPT2\", \"LPT3\", \"LPT4\", \"LPT5\", \"LPT6\", \"LPT7\", \"LPT8\", \"LPT9\"}
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base_part = name.split('.')[0].upper()
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if base_part in reserved_names:
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name = \"_\" + name
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return name if name else \"unnamed_item\"
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def get_long_path(path):
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\"\"\"Converts a path to a long-path-aware format on Windows.\"\"\"
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if os.name == 'nt':
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abs_path = os.path.abspath(path)
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if not abs_path.startswith('\\\\\\\\?\\\\'):
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if abs_path.startswith('\\\\\\\\'): # UNC path
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return '\\\\\\\\?\\\\UNC\\\\' + abs_path[2:]
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return '\\\\\\\\?\\\\' + abs_path
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return path
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def load_config(file_path):
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config = {}
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with open(file_path, 'r', encoding='utf-8') as f:
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for line in f:
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if '=' in line:
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key, value = line.split('=', 1)
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config[key.strip()] = value.strip().strip('\"')
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return config
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def create_msal_app(tenant_id, client_id, client_secret):
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return ConfidentialClientApplication(
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client_id,
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authority=f\"https://login.microsoftonline.com/{tenant_id}\",
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client_credential=client_secret,
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)
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def get_headers(app):
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\"\"\"Acquires a token from cache or fetches a new one if expired.\"\"\"
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scopes = [\"https://graph.microsoft.com/.default\"]
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result = app.acquire_token_for_client(scopes=scopes)
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if \"access_token\" in result:
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return {'Authorization': f'Bearer {result[\"access_token\"]}'}
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else:
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raise Exception(f\"Could not acquire token: {result.get('error_description')}\")
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def get_site_id(app, site_url):
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headers = get_headers(app)
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parsed = urlparse(site_url)
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hostname = parsed.netloc
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site_path = parsed.path
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url = f\"https://graph.microsoft.com/v1.0/sites/{hostname}:{site_path}\"
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response = requests.get(url, headers=headers)
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response.raise_for_status()
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return response.json()['id']
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def get_drive_id(app, site_id, drive_name):
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headers = get_headers(app)
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url = f\"https://graph.microsoft.com/v1.0/sites/{site_id}/drives\"
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response = requests.get(url, headers=headers)
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response.raise_for_status()
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drives = response.json().get('value', [])
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for drive in drives:
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if drive['name'] == drive_name:
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return drive['id']
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raise Exception(f\"Drive '{drive_name}' not found in site.\")
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def download_file(download_url, local_path, expected_size):
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try:
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long_local_path = get_long_path(local_path)
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# Check if file exists and size matches
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if os.path.exists(long_local_path):
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if os.path.isdir(long_local_path):
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return False, f\"Path exists as a directory: {local_path}\"
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local_size = os.path.getsize(long_local_path)
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if int(local_size) == int(expected_size):
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return True, \"Skipped\"
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target_dir = os.path.dirname(long_local_path)
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if not os.path.exists(target_dir):
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os.makedirs(target_dir, exist_ok=True)
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elif not os.path.isdir(target_dir):
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return False, f\"Parent path exists but is not a directory: {target_dir}\"
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# Stream download with timeout and 1MB chunks
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response = requests.get(download_url, stream=True, timeout=60)
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response.raise_for_status()
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with open(long_local_path, 'wb') as f:
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for chunk in response.iter_content(chunk_size=1024*1024):
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if chunk:
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f.write(chunk)
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local_size = os.path.getsize(long_local_path)
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if int(local_size) == int(expected_size):
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return True, \"Downloaded\"
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else:
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return False, f\"Size mismatch: Remote={expected_size}, Local={local_size}\"
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except Exception as e:
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return False, f\"[Error {getattr(e, 'errno', 'unknown')}] {str(e)}\"
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def download_folder_recursive(app, drive_id, item_path, local_root_path, report):
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try:
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headers = get_headers(app)
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encoded_path = quote(item_path)
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url = f\"https://graph.microsoft.com/v1.0/drives/{drive_id}/root:/{encoded_path}:/children\"
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if not item_path:
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url = f\"https://graph.microsoft.com/v1.0/drives/{drive_id}/root/children\"
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response = requests.get(url, headers=headers)
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response.raise_for_status()
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items = response.json().get('value', [])
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for item in items:
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item_name = item['name']
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sanitized_name = sanitize_filename(item_name)
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local_path = os.path.normpath(os.path.join(local_root_path, sanitized_name))
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if 'folder' in item:
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sub_item_path = f\"{item_path}/{item_name}\".strip('/')
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download_folder_recursive(app, drive_id, sub_item_path, local_path, report)
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elif 'file' in item:
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download_url = item.get('@microsoft.graph.downloadUrl')
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if not download_url:
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report.append({\"Path\": f\"{item_path}/{item_name}\", \"Error\": \"No URL\", \"Timestamp\": datetime.now().isoformat()})
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continue
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success, status = download_file(download_url, local_path, item['size'])
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if success:
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if status != \"Skipped\":
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print(f\"Downloaded: {item_path}/{item_name}\")
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else:
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print(f\"FAILED: {item_path}/{item_name} - {status}\")
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report.append({\"Path\": f\"{item_path}/{item_name}\", \"Error\": status, \"Timestamp\": datetime.now().isoformat()})
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except Exception as e:
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err_msg = f\"Folder error: {str(e)}\"
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print(f\"FAILED FOLDER: {item_path} - {err_msg}\")
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report.append({\"Path\": item_path, \"Error\": err_msg, \"Timestamp\": datetime.now().isoformat()})
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def main():
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config = load_config('connection_info.txt')
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tenant_id = config.get('TENANT_ID')
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client_id = config.get('CLIENT_ID')
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client_secret = config.get('CLIENT_SECRET')
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site_url = config.get('SITE_URL')
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drive_name = config.get('DOCUMENT_LIBRARY')
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folders_to_download_str = config.get('FOLDERS_TO_DOWNLOAD', '')
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local_path_base = config.get('LOCAL_PATH', '').replace('\\\\', os.sep)
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folders_to_download = [f.strip() for f in folders_to_download_str.split(',') if f.strip()]
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if not folders_to_download:
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folders_to_download = [\"\"]
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print(f\"Connecting via Graph API...\")
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report = []
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try:
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app = create_msal_app(tenant_id, client_id, client_secret)
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site_id = get_site_id(app, site_url)
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drive_id = get_drive_id(app, site_id, drive_name)
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for folder in folders_to_download:
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# Clean folder paths from config
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folder_parts = [sanitize_filename(p) for p in folder.split('/') if p]
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local_folder_path = os.path.normpath(os.path.join(local_path_base, *folder_parts))
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print(f\"\\nProcessing: {folder if folder else 'Root'}\")
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download_folder_recursive(app, drive_id, folder, local_folder_path, report)
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except Exception as e:
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print(f\"Critical error: {e}\")
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report.append({\"Path\": \"GENERAL\", \"Error\": str(e), \"Timestamp\": datetime.now().isoformat()})
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report_file = f\"download_report_{datetime.now().strftime('%Y%m%d_%H%M%S')}.csv\"
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with open(report_file, 'w', newline='', encoding='utf-8') as f:
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writer = csv.DictWriter(f, fieldnames=[\"Path\", \"Error\", \"Timestamp\"])
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writer.writeheader()
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writer.writerows(report)
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print(f\"\\nProcess complete. Errors: {len(report)}\")
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if __name__ == \"__main__\":
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main()
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