403 lines
13 KiB
Python
403 lines
13 KiB
Python
# -*- coding: utf-8 -*-
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# vi:si:et:sw=4:sts=4:ts=4
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import os
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import sys
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from PIL import Image
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from io import StringIO, BytesIO
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import re
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import stdnum.isbn
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import socket
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import io
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import gzip
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import time
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import hashlib
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from datetime import datetime
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import subprocess
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import base64
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import ox
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import ed25519
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from OpenSSL.crypto import (
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load_privatekey, load_certificate,
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dump_privatekey, dump_certificate,
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FILETYPE_ASN1, FILETYPE_PEM, PKey, TYPE_RSA,
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X509, X509Extension
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)
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from Crypto.PublicKey import RSA
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from Crypto.Util.asn1 import DerSequence
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from meta.utils import normalize_isbn, find_isbns, get_language, to_isbn13
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import logging
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logger = logging.getLogger(__name__)
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ENCODING='base64'
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def cleanup_id(key, value):
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if key == 'isbn':
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value = normalize_isbn(value)
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if key in ('lccn', 'olid', 'oclc'):
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value = ''.join([v for v in value if v!='-'])
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return value
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def valid_olid(id):
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return id.startswith('OL') and id.endswith('M')
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def get_positions(ids, pos):
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'''
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>>> get_positions([1,2,3,4], [2,4])
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{2: 1, 4: 3}
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'''
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positions = {}
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for i in pos:
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try:
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positions[i] = ids.index(i)
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except:
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pass
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return positions
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def get_by_key(objects, key, value):
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obj = [o for o in objects if o.get(key) == value]
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return obj and obj[0] or None
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def get_by_id(objects, id):
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return get_by_key(objects, 'id', id)
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def resize_image(data, width=None, size=None):
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if isinstance(data, bytes):
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data = BytesIO(data)
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else:
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data = StringIO(data)
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source = Image.open(data)
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if source.mode not in ('1', 'CMYK', 'L', 'RGB', 'RGBA', 'RGBX', 'YCbCr'):
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source = source.convert('RGB')
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source_width = source.size[0]
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source_height = source.size[1]
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if size:
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if source_width > source_height:
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width = size
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height = int(width / (float(source_width) / source_height))
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height = height - height % 2
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else:
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height = size
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width = int(height * (float(source_width) / source_height))
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width = width - width % 2
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else:
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height = int(width / (float(source_width) / source_height))
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height = height - height % 2
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width = max(width, 1)
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height = max(height, 1)
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if width < source_width:
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resize_method = Image.ANTIALIAS
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else:
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resize_method = Image.BICUBIC
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output = source.resize((width, height), resize_method)
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o = BytesIO()
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output.save(o, format='jpeg')
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data = o.getvalue()
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o.close()
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return data
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def sort_title(title):
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title = title.replace('Æ', 'Ae')
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if isinstance(title, str):
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title = str(title)
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title = ox.sort_string(title)
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#title
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title = re.sub('[\'!¿¡,\.;\-"\:\*\[\]]', '', title)
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return title.strip()
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def get_position_by_id(list, key):
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for i in range(0, len(list)):
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if list[i]['id'] == key:
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return i
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return -1
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def valid(key, value, sig):
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'''
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validate that value was signed by key
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'''
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if isinstance(sig, str):
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sig = sig.encode()
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if isinstance(value, str):
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value = value.encode()
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if isinstance(key, str):
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key = key.encode()
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vk = ed25519.VerifyingKey(key, encoding=ENCODING)
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try:
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vk.verify(sig, value, encoding=ENCODING)
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#except ed25519.BadSignatureError:
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except:
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return False
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return True
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def get_user_id(private_key, cert_path):
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if os.path.exists(private_key):
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with open(private_key) as fd:
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key = load_privatekey(FILETYPE_PEM, fd.read())
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if key.bits() != 1024:
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os.unlink(private_key)
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else:
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user_id = get_service_id(private_key)
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if not os.path.exists(private_key):
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if os.path.exists(cert_path):
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os.unlink(cert_path)
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folder = os.path.dirname(private_key)
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if not os.path.exists(folder):
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os.makedirs(folder)
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os.chmod(folder, 0o700)
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key = PKey()
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key.generate_key(TYPE_RSA, 1024)
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with open(private_key, 'wb') as fd:
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os.chmod(private_key, 0o600)
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fd.write(dump_privatekey(FILETYPE_PEM, key))
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os.chmod(private_key, 0o400)
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user_id = get_service_id(private_key)
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if not os.path.exists(cert_path):
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ca = X509()
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ca.set_version(2)
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ca.set_serial_number(1)
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ca.get_subject().CN = user_id
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ca.gmtime_adj_notBefore(0)
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ca.gmtime_adj_notAfter(24 * 60 * 60)
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ca.set_issuer(ca.get_subject())
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ca.set_pubkey(key)
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ca.add_extensions([
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X509Extension(b"basicConstraints", True, b"CA:TRUE, pathlen:0"),
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X509Extension(b"nsCertType", True, b"sslCA"),
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X509Extension(b"extendedKeyUsage", True,
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b"serverAuth,clientAuth,emailProtection,timeStamping,msCodeInd,msCodeCom,msCTLSign,msSGC,msEFS,nsSGC"),
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X509Extension(b"keyUsage", False, b"keyCertSign, cRLSign"),
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X509Extension(b"subjectKeyIdentifier", False, b"hash", subject=ca),
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])
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ca.sign(key, "sha256")
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with open(cert_path, 'wb') as fd:
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fd.write(dump_certificate(FILETYPE_PEM, ca))
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return user_id
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def get_service_id(private_key_file=None, cert=None):
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'''
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service_id is the first half of the sha1 of the rsa public key encoded in base32
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'''
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if private_key_file:
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with open(private_key_file, 'rb') as fd:
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private_key = fd.read()
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public_key = RSA.importKey(private_key).publickey().exportKey('DER')[22:]
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# compute sha1 of public key and encode first half in base32
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service_id = base64.b32encode(hashlib.sha1(public_key).digest()[:10]).lower().decode()
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'''
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# compute public key from priate key and export in DER format
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# ignoring the SPKI header(22 bytes)
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key = load_privatekey(FILETYPE_PEM, private_key)
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cert = X509()
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cert.set_pubkey(key)
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public_key = dump_privatekey(FILETYPE_ASN1, cert.get_pubkey())[22:]
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# compute sha1 of public key and encode first half in base32
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service_id = base64.b32encode(hashlib.sha1(public_key).digest()[:10]).lower().decode()
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'''
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elif cert:
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# compute sha1 of public key and encode first half in base32
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key = load_certificate(FILETYPE_ASN1, cert).get_pubkey()
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pub_der = DerSequence()
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pub_der.decode(dump_privatekey(FILETYPE_ASN1, key))
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public_key = RSA.construct((pub_der._seq[1], pub_der._seq[2])).exportKey('DER')[22:]
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service_id = base64.b32encode(hashlib.sha1(public_key).digest()[:10]).lower().decode()
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return service_id
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def get_public_ipv6():
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try:
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host = ('2a01:4f8:120:3201::3', 25519)
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s = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
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s.settimeout(1)
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s.connect(host)
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ip = s.getsockname()[0]
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s.close()
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except:
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ip = None
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return ip
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def get_interface():
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interface = ''
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if sys.platform == 'darwin' or sys.platform.startswith('freebsd'):
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#cmd = ['/usr/sbin/netstat', '-rn']
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cmd = ['/sbin/route', '-n', 'get', 'default']
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p = subprocess.Popen(cmd, stdout=subprocess.PIPE, close_fds=True)
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stdout, stderr = p.communicate()
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stdout = stdout.decode('utf-8')
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interface = [[p.strip() for p in s.split(':', 1)]
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for s in stdout.strip().split('\n') if 'interface' in s]
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if interface:
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interface = '%%%s' % interface[0][1]
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else:
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interface = ''
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return interface
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def get_local_ipv4():
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ip = None
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if sys.platform == 'darwin' or sys.platform.startswith('freebsd'):
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cmd = ['/sbin/route', '-n', 'get', 'default']
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p = subprocess.Popen(cmd, stdout=subprocess.PIPE, close_fds=True)
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stdout, stderr = p.communicate()
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stdout = stdout.decode('utf-8')
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interface = [[p.strip() for p in s.split(':', 1)]
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for s in stdout.strip().split('\n') if 'interface' in s]
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if interface:
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interface = interface[0][1]
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cmd = ['ifconfig', interface]
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p = subprocess.Popen(cmd, stdout=subprocess.PIPE, close_fds=True)
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stdout, stderr = p.communicate()
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stdout = stdout.decode('utf-8')
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ips = [l for l in stdout.split('\n') if 'inet ' in l]
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if ips:
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ip = ips[0].strip().split(' ')[1]
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else:
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cmd = ['ip', 'route', 'show']
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p = subprocess.Popen(cmd, stdout=subprocess.PIPE, close_fds=True)
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stdout, stderr = p.communicate()
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stdout = stdout.decode('utf-8')
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local = [l for l in stdout.split('\n') if 'default' in l]
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if local:
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dev = local[0].split(' ')[4]
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local_ip = [l for l in stdout.split('\n')
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if dev in l and not 'default' in l and 'src' in l]
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if local_ip:
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local_ip = [p for p in local_ip[0].split(' ')[1:] if '.' in p]
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if local_ip:
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ip = local_ip[0]
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if not ip:
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cmd = ['ip', 'addr', 'show']
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p = subprocess.Popen(cmd, stdout=subprocess.PIPE, close_fds=True)
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stdout, stderr = p.communicate()
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stdout = stdout.decode('utf-8')
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parts = stdout.split(' ')
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local_ip = [p for p in parts if dev in p]
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if local_ip:
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local_ip = re.compile('inet (\d+\.\d+\.\d+.\d+)').findall(local_ip[0])
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if local_ip:
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ip = local_ip[0]
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if not ip:
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try:
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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s.connect(("8.8.8.8", 53))
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return s.getsockname()[0]
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except:
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pass
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return ip
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def update_dict(root, data):
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for key in data:
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keys = [part.replace('\0', '.') for part in key.replace('\\.', '\0').split('.')]
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value = data[key]
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p = root
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while len(keys)>1:
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key = keys.pop(0)
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if isinstance(p, list):
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p = p[get_position_by_id(p, key)]
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else:
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if key not in p:
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p[key] = {}
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p = p[key]
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if value == None and keys[0] in p:
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del p[keys[0]]
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else:
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p[keys[0]] = value
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if hasattr(root, '_save'):
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root._save()
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def remove_empty_folders(prefix):
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empty = []
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for root, folders, files in os.walk(prefix):
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if len(files) == 1 and files[0] == '.DS_Store':
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os.unlink(os.path.join(root, files[0]))
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files = []
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if not folders and not files:
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empty.append(root)
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for folder in empty:
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remove_empty_tree(folder)
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def remove_empty_tree(leaf):
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while leaf:
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if not os.path.exists(leaf):
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leaf = os.path.dirname(leaf)
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elif os.path.isdir(leaf) and not os.listdir(leaf):
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logger.debug('rmdir %s', leaf)
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os.rmdir(leaf)
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else:
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break
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utc_0 = int(time.mktime(datetime(1970, 1, 1).timetuple()))
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def datetime2ts(dt):
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return int(time.mktime(dt.utctimetuple())) - utc_0
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def ts2datetime(ts):
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return datetime.utcfromtimestamp(float(ts))
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def run(*cmd):
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p = subprocess.Popen(cmd, close_fds=True)
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p.wait()
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return p.returncode
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def get(*cmd):
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p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True)
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stdout, error = p.communicate()
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return stdout.decode()
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def makefolder(path):
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dirname = os.path.dirname(path)
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if not os.path.exists(dirname):
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os.makedirs(dirname)
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def open_folder(folder=None, path=None):
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cmd = []
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if path and not folder:
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folder = os.path.dirname(path)
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if folder and not path:
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path = folder
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if sys.platform == 'darwin':
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if folder and not path:
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path = folder
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cmd += ['open', '-R', path]
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elif sys.platform.startswith('linux'):
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cmd += ['xdg-open', folder]
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else:
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logger.debug('unsupported platform %s', sys.platform)
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subprocess.Popen(cmd, close_fds=True)
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def can_connect_dns(host="8.8.8.8", port=53):
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"""
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host: 8.8.8.8 (google-public-dns-a.google.com)
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port: 53/tcp
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"""
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try:
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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s.settimeout(1)
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s.connect((host, port))
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return True
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except:
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pass
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return False
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def _to_json(python_object):
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if isinstance(python_object, datetime):
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if python_object.year < 1900:
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tt = python_object.timetuple()
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return '%d-%02d-%02dT%02d:%02d%02dZ' % tuple(list(tt)[:6])
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return python_object.strftime('%Y-%m-%dT%H:%M:%SZ')
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raise TypeError(u'%s %s is not JSON serializable' % (repr(python_object), type(python_object)))
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def get_ratio(data):
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try:
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img = Image.open(BytesIO(data))
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return img.size[0]/img.size[1]
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except:
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return 1
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