mirror of https://gitlab.com/bashrc2/epicyon
455 lines
17 KiB
Python
455 lines
17 KiB
Python
__filename__ = "session.py"
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__author__ = "Bob Mottram"
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__license__ = "AGPL3+"
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__version__ = "1.2.0"
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__maintainer__ = "Bob Mottram"
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__email__ = "bob@libreserver.org"
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__status__ = "Production"
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__module_group__ = "Session"
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import os
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import requests
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from utils import urlPermitted
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from utils import isImageFile
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from httpsig import createSignedHeader
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import json
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from socket import error as SocketError
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import errno
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from http.client import HTTPConnection
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baseDirectory = None
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def createSession(proxyType: str):
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session = None
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try:
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session = requests.session()
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except requests.exceptions.RequestException as e:
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print('WARN: requests error during createSession ' + str(e))
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return None
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except SocketError as e:
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if e.errno == errno.ECONNRESET:
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print('WARN: connection was reset during createSession ' + str(e))
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else:
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print('WARN: socket error during createSession ' + str(e))
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return None
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except ValueError as e:
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print('WARN: error during createSession ' + str(e))
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return None
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if not session:
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return None
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if proxyType == 'tor':
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session.proxies = {}
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session.proxies['http'] = 'socks5h://localhost:9050'
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session.proxies['https'] = 'socks5h://localhost:9050'
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elif proxyType == 'i2p':
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session.proxies = {}
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session.proxies['http'] = 'socks5h://localhost:4447'
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session.proxies['https'] = 'socks5h://localhost:4447'
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elif proxyType == 'gnunet':
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session.proxies = {}
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session.proxies['http'] = 'socks5h://localhost:7777'
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session.proxies['https'] = 'socks5h://localhost:7777'
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# print('New session created with proxy ' + str(proxyType))
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return session
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def urlExists(session, url: str, timeoutSec: int = 3,
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httpPrefix: str = 'https', domain: str = 'testdomain') -> bool:
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if not isinstance(url, str):
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print('url: ' + str(url))
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print('ERROR: urlExists failed, url should be a string')
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return False
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sessionParams = {}
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sessionHeaders = {}
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sessionHeaders['User-Agent'] = 'Epicyon/' + __version__
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if domain:
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sessionHeaders['User-Agent'] += \
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'; +' + httpPrefix + '://' + domain + '/'
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if not session:
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print('WARN: urlExists failed, no session specified')
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return True
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try:
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result = session.get(url, headers=sessionHeaders,
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params=sessionParams,
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timeout=timeoutSec)
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if result:
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if result.status_code == 200 or \
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result.status_code == 304:
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return True
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else:
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print('urlExists for ' + url + ' returned ' +
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str(result.status_code))
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except BaseException:
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print('EX: urlExists GET failed ' + str(url))
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pass
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return False
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def _getJsonRequest(session, url: str, domainFull: str, sessionHeaders: {},
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sessionParams: {}, timeoutSec: int,
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signingPrivateKeyPem: str, quiet: bool, debug: bool) -> {}:
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"""http GET for json
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"""
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try:
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result = session.get(url, headers=sessionHeaders,
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params=sessionParams, timeout=timeoutSec)
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if result.status_code != 200:
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if result.status_code == 401:
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print("WARN: getJson " + url + ' rejected by secure mode')
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elif result.status_code == 403:
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print('WARN: getJson Forbidden url: ' + url)
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elif result.status_code == 404:
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print('WARN: getJson Not Found url: ' + url)
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elif result.status_code == 410:
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print('WARN: getJson no longer available url: ' + url)
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else:
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print('WARN: getJson url: ' + url +
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' failed with error code ' +
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str(result.status_code) +
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' headers: ' + str(sessionHeaders))
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return result.json()
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except requests.exceptions.RequestException as e:
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sessionHeaders2 = sessionHeaders.copy()
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if sessionHeaders2.get('Authorization'):
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sessionHeaders2['Authorization'] = 'REDACTED'
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if debug and not quiet:
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print('ERROR: getJson failed, url: ' + str(url) + ', ' +
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'headers: ' + str(sessionHeaders2) + ', ' +
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'params: ' + str(sessionParams) + ', ' + str(e))
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except ValueError as e:
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sessionHeaders2 = sessionHeaders.copy()
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if sessionHeaders2.get('Authorization'):
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sessionHeaders2['Authorization'] = 'REDACTED'
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if debug and not quiet:
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print('ERROR: getJson failed, url: ' + str(url) + ', ' +
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'headers: ' + str(sessionHeaders2) + ', ' +
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'params: ' + str(sessionParams) + ', ' + str(e))
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except SocketError as e:
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if not quiet:
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if e.errno == errno.ECONNRESET:
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print('WARN: getJson failed, ' +
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'connection was reset during getJson ' + str(e))
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return None
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def _getJsonSigned(session, url: str, domainFull: str, sessionHeaders: {},
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sessionParams: {}, timeoutSec: int,
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signingPrivateKeyPem: str, quiet: bool, debug: bool) -> {}:
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"""Authorized fetch - a signed version of GET
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"""
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if not domainFull:
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if debug:
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print('No sending domain for signed GET')
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return None
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if '://' not in url:
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print('Invalid url: ' + url)
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return None
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httpPrefix = url.split('://')[0]
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toDomainFull = url.split('://')[1]
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if '/' in toDomainFull:
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toDomainFull = toDomainFull.split('/')[0]
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if ':' in domainFull:
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domain = domainFull.split(':')[0]
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port = domainFull.split(':')[1]
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else:
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domain = domainFull
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if httpPrefix == 'https':
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port = 443
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else:
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port = 80
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if ':' in toDomainFull:
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toDomain = toDomainFull.split(':')[0]
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toPort = toDomainFull.split(':')[1]
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else:
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toDomain = toDomainFull
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if httpPrefix == 'https':
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toPort = 443
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else:
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toPort = 80
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if debug:
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print('Signed GET domain: ' + domain + ' ' + str(port))
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print('Signed GET toDomain: ' + toDomain + ' ' + str(toPort))
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print('Signed GET url: ' + url)
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print('Signed GET httpPrefix: ' + httpPrefix)
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messageStr = ''
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withDigest = False
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if toDomainFull + '/' in url:
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path = '/' + url.split(toDomainFull + '/')[1]
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else:
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path = '/actor'
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contentType = 'application/activity+json'
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if sessionHeaders.get('Accept'):
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contentType = sessionHeaders['Accept']
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signatureHeaderJson = \
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createSignedHeader(None, signingPrivateKeyPem, 'actor', domain, port,
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toDomain, toPort, path, httpPrefix, withDigest,
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messageStr, contentType)
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if debug:
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print('Signed GET signatureHeaderJson ' + str(signatureHeaderJson))
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# update the session headers from the signature headers
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sessionHeaders['Host'] = signatureHeaderJson['host']
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sessionHeaders['Date'] = signatureHeaderJson['date']
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sessionHeaders['Accept'] = signatureHeaderJson['accept']
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sessionHeaders['Signature'] = signatureHeaderJson['signature']
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sessionHeaders['Content-Length'] = '0'
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if debug:
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print('Signed GET sessionHeaders ' + str(sessionHeaders))
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return _getJsonRequest(session, url, domainFull, sessionHeaders,
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sessionParams, timeoutSec, None, quiet, debug)
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def getJson(signingPrivateKeyPem: str,
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session, url: str, headers: {}, params: {}, debug: bool,
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version: str = '1.2.0', httpPrefix: str = 'https',
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domain: str = 'testdomain',
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timeoutSec: int = 20, quiet: bool = False) -> {}:
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if not isinstance(url, str):
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if debug and not quiet:
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print('url: ' + str(url))
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print('ERROR: getJson failed, url should be a string')
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return None
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sessionParams = {}
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sessionHeaders = {}
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if headers:
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sessionHeaders = headers
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if params:
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sessionParams = params
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sessionHeaders['User-Agent'] = 'Epicyon/' + version
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if domain:
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sessionHeaders['User-Agent'] += \
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'; +' + httpPrefix + '://' + domain + '/'
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if not session:
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if not quiet:
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print('WARN: getJson failed, no session specified for getJson')
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return None
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if debug:
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HTTPConnection.debuglevel = 1
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if signingPrivateKeyPem:
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return _getJsonSigned(session, url, domain,
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sessionHeaders, sessionParams,
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timeoutSec, signingPrivateKeyPem,
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quiet, debug)
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else:
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return _getJsonRequest(session, url, domain, sessionHeaders,
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sessionParams, timeoutSec,
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None, quiet, debug)
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def postJson(httpPrefix: str, domainFull: str,
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session, postJsonObject: {}, federationList: [],
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inboxUrl: str, headers: {}, timeoutSec: int = 60,
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quiet: bool = False) -> str:
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"""Post a json message to the inbox of another person
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"""
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# check that we are posting to a permitted domain
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if not urlPermitted(inboxUrl, federationList):
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if not quiet:
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print('postJson: ' + inboxUrl + ' not permitted')
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return None
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sessionHeaders = headers
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sessionHeaders['User-Agent'] = 'Epicyon/' + __version__
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sessionHeaders['User-Agent'] += \
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'; +' + httpPrefix + '://' + domainFull + '/'
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try:
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postResult = \
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session.post(url=inboxUrl,
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data=json.dumps(postJsonObject),
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headers=headers, timeout=timeoutSec)
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except requests.Timeout as e:
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if not quiet:
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print('ERROR: postJson timeout ' + inboxUrl + ' ' +
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json.dumps(postJsonObject) + ' ' + str(headers))
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print(e)
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return ''
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except requests.exceptions.RequestException as e:
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if not quiet:
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print('ERROR: postJson requests failed ' + inboxUrl + ' ' +
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json.dumps(postJsonObject) + ' ' + str(headers) +
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' ' + str(e))
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return None
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except SocketError as e:
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if not quiet and e.errno == errno.ECONNRESET:
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print('WARN: connection was reset during postJson')
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return None
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except ValueError as e:
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if not quiet:
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print('ERROR: postJson failed ' + inboxUrl + ' ' +
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json.dumps(postJsonObject) + ' ' + str(headers) +
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' ' + str(e))
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return None
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if postResult:
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return postResult.text
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return None
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def postJsonString(session, postJsonStr: str,
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federationList: [],
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inboxUrl: str,
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headers: {},
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debug: bool,
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timeoutSec: int = 30,
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quiet: bool = False) -> (bool, bool, int):
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"""Post a json message string to the inbox of another person
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The second boolean returned is true if the send is unauthorized
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NOTE: Here we post a string rather than the original json so that
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conversions between string and json format don't invalidate
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the message body digest of http signatures
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"""
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try:
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postResult = \
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session.post(url=inboxUrl, data=postJsonStr,
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headers=headers, timeout=timeoutSec)
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except requests.exceptions.RequestException as e:
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if not quiet:
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print('WARN: error during postJsonString requests ' + str(e))
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return None, None, 0
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except SocketError as e:
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if not quiet and e.errno == errno.ECONNRESET:
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print('WARN: connection was reset during postJsonString')
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if not quiet:
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print('ERROR: postJsonString failed ' + inboxUrl + ' ' +
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postJsonStr + ' ' + str(headers))
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return None, None, 0
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except ValueError as e:
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if not quiet:
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print('WARN: error during postJsonString ' + str(e))
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return None, None, 0
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if postResult.status_code < 200 or postResult.status_code > 202:
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if postResult.status_code >= 400 and \
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postResult.status_code <= 405 and \
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postResult.status_code != 404:
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if not quiet:
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print('WARN: Post to ' + inboxUrl +
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' is unauthorized. Code ' +
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str(postResult.status_code))
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return False, True, postResult.status_code
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else:
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if not quiet:
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print('WARN: Failed to post to ' + inboxUrl +
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' with headers ' + str(headers) +
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' status code ' + str(postResult.status_code))
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return False, False, postResult.status_code
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return True, False, 0
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def postImage(session, attachImageFilename: str, federationList: [],
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inboxUrl: str, headers: {}) -> str:
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"""Post an image to the inbox of another person or outbox via c2s
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"""
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# check that we are posting to a permitted domain
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if not urlPermitted(inboxUrl, federationList):
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print('postJson: ' + inboxUrl + ' not permitted')
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return None
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if not isImageFile(attachImageFilename):
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print('Image must be png, jpg, webp, avif, gif or svg')
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return None
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if not os.path.isfile(attachImageFilename):
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print('Image not found: ' + attachImageFilename)
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return None
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contentType = 'image/jpeg'
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if attachImageFilename.endswith('.png'):
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contentType = 'image/png'
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elif attachImageFilename.endswith('.gif'):
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contentType = 'image/gif'
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elif attachImageFilename.endswith('.webp'):
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contentType = 'image/webp'
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elif attachImageFilename.endswith('.avif'):
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contentType = 'image/avif'
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elif attachImageFilename.endswith('.svg'):
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contentType = 'image/svg+xml'
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headers['Content-type'] = contentType
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with open(attachImageFilename, 'rb') as avFile:
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mediaBinary = avFile.read()
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try:
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postResult = session.post(url=inboxUrl, data=mediaBinary,
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headers=headers)
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except requests.exceptions.RequestException as e:
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print('WARN: error during postImage requests ' + str(e))
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return None
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except SocketError as e:
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if e.errno == errno.ECONNRESET:
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print('WARN: connection was reset during postImage')
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print('ERROR: postImage failed ' + inboxUrl + ' ' +
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str(headers) + ' ' + str(e))
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return None
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except ValueError as e:
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print('WARN: error during postImage ' + str(e))
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return None
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if postResult:
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return postResult.text
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return None
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def downloadImage(session, baseDir: str, url: str,
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imageFilename: str, debug: bool,
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force: bool = False) -> bool:
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"""Downloads an image
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"""
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if not url:
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return None
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# try different image types
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imageFormats = {
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'png': 'png',
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'jpg': 'jpeg',
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'jpeg': 'jpeg',
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'gif': 'gif',
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'svg': 'svg+xml',
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'webp': 'webp',
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'avif': 'avif'
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}
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sessionHeaders = None
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for imFormat, mimeType in imageFormats.items():
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if url.endswith('.' + imFormat) or \
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'.' + imFormat + '?' in url:
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sessionHeaders = {
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'Accept': 'image/' + mimeType
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}
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break
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if not sessionHeaders:
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if debug:
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print('downloadImage: no session headers')
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return False
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if not os.path.isfile(imageFilename) or force:
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try:
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if debug:
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print('Downloading image url: ' + url)
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result = session.get(url,
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headers=sessionHeaders,
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params=None)
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if result.status_code < 200 or \
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result.status_code > 202:
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if debug:
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print('Image download failed with status ' +
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str(result.status_code))
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# remove partial download
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if os.path.isfile(imageFilename):
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try:
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os.remove(imageFilename)
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except OSError:
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print('EX: downloadImage unable to delete ' +
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imageFilename)
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else:
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with open(imageFilename, 'wb') as f:
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f.write(result.content)
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if debug:
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print('Image downloaded from ' + url)
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return True
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except Exception as e:
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print('EX: Failed to download image: ' +
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str(url) + ' ' + str(e))
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return False
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