├── LICENSE ├── README.md ├── bin └── mitmdump.exe ├── github-hosts.bat └── src ├── config.yaml └── github-hosts.py /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. Definitions. 8 | 9 | "License" shall mean the terms and conditions for use, reproduction, 10 | and distribution as defined by Sections 1 through 9 of this document. 11 | 12 | "Licensor" shall mean the copyright owner or entity authorized by 13 | the copyright owner that is granting the License. 14 | 15 | "Legal Entity" shall mean the union of the acting entity and all 16 | other entities that control, are controlled by, or are under common 17 | control with that entity. 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https://github.com/feng2208/github-hosts 3 | 4 | # mappings: 5 | # - hosts: 6 | # - example.com 7 | # - "*.example.com" # 所有子域名 8 | # sni: sni.example.com 9 | # address: 100.1.1.1:443 10 | # sni 和 hosts 都会用来验证服务器证书，如果 sni 以下划线开头(如：_example.com)，则 sni 不会被发送。 11 | 12 | 13 | mappings: 14 | 15 | ### github 16 | - hosts: 17 | - github.com 18 | sni: octocaptcha.com 19 | address: 140.82.116.4:443 20 | 21 | - hosts: 22 | - github.githubassets.com 23 | - "*.githubusercontent.com" 24 | sni: yelp.com 25 | address: 199.232.240.116:443 26 | -------------------------------------------------------------------------------- /src/github-hosts.py: -------------------------------------------------------------------------------- 1 | # https://github.com/feng2208/github-hosts 2 | # mitmdump -s src/github-hosts.py -p 8180 3 | 4 | 5 | import logging 6 | from dataclasses import dataclass 7 | 8 | from mitmproxy.addonmanager import Loader 9 | from mitmproxy import tls 10 | from mitmproxy.addons.tlsconfig import TlsConfig 11 | 12 | from OpenSSL import SSL 13 | from OpenSSL.crypto import X509StoreContext 14 | from OpenSSL.crypto import X509StoreContextError 15 | from cryptography import x509 16 | 17 | from pathlib import Path 18 | from ruamel.yaml import YAML 19 | import re 20 | 21 | import os 22 | SRC_DIR = os.path.dirname(os.path.realpath(__file__)) 23 | CONFIG_FILE = SRC_DIR + "/config.yaml" 24 | 25 | 26 | def verify_callback(conn, cert, error_n, error_depth, return_code) -> bool: 27 | if return_code == 1: 28 | return True 29 | 30 | ctx = conn.get_context() 31 | store = ctx.get_cert_store() 32 | cert_chain = conn.get_peer_cert_chain() 33 | try: 34 | X509StoreContext(store, cert, cert_chain).verify_certificate() 35 | except X509StoreContextError: 36 | return False 37 | 38 | if cert_chain[0].get_serial_number() == cert.get_serial_number(): 39 | crypto_cert = cert.to_cryptography() 40 | ext = crypto_cert.extensions.get_extension_for_class(x509.SubjectAlternativeName) 41 | dns_names = ext.value.get_values_for_type(x509.DNSName) 42 | if conn.verify_host1 not in dns_names and conn.verify_host2 not in dns_names: 43 | n_host1 = re.sub(r'^\w+\.', '*.', conn.verify_host1) 44 | n_host2 = re.sub(r'^\w+\.', '*.', conn.verify_host2) 45 | if n_host1 not in dns_names and n_host2 not in dns_names: 46 | return False 47 | return True 48 | 49 | 50 | @dataclass 51 | class Mapping: 52 | sni: str 53 | address: tuple 54 | 55 | class GithubHosts(TlsConfig): 56 | # configurations for regular ("example.com") mappings: 57 | host_mappings: dict[str, Mapping] 58 | 59 | # Configurations for star ("*.example.com") mappings: 60 | star_mappings: dict[str, Mapping] 61 | 62 | tcp_hosts: list[str] 63 | github_hosts_loaded: bool 64 | yaml_config: dict 65 | 66 | def __init__(self) -> None: 67 | self.host_mappings = {} 68 | self.star_mappings = {} 69 | self.tcp_hosts = [] 70 | self.github_hosts_loaded = False 71 | self.yaml_config = {} 72 | 73 | def load(self, loader: Loader) -> None: 74 | if not self.github_hosts_loaded: 75 | yaml = YAML(typ='safe') 76 | self.yaml_config = yaml.load(Path(CONFIG_FILE)) 77 | self._load_github_hosts() 78 | self.github_hosts_loaded = True 79 | 80 | loader.add_option( 81 | name="connection_strategy", 82 | typespec=str, 83 | default="lazy", 84 | help="set connection strategy to lazy", 85 | ) 86 | loader.add_option( 87 | name="showhost", 88 | typespec=bool, 89 | default=True, 90 | help="Use the Host header to construct URLs for display", 91 | ) 92 | loader.add_option( 93 | name="tcp_hosts", 94 | typespec=list, 95 | default=self.tcp_hosts, 96 | help="Generic TCP SSL proxy mode for all hosts that match the pattern", 97 | ) 98 | 99 | def tls_clienthello(self, data: tls.ClientHelloData) -> None: 100 | data.ignore_connection = True 101 | host = data.context.client.sni 102 | 103 | mapping = self._get_sni(host) 104 | if mapping is not None: 105 | logging.info(f"xxxxxxxx-tls-server-host: {host}") 106 | if mapping.sni is not None: 107 | data.ignore_connection = False 108 | data.context.server.sni = mapping.sni 109 | logging.info(f"xxxxxxxx-tls-server-sni: {mapping.sni}") 110 | if mapping.address is not None: 111 | data.context.server.address = mapping.address 112 | logging.info(f"xxxxxxxx-tls-server-address: {mapping.address}") 113 | 114 | else: 115 | s_host = data.context.server.address[0] 116 | s_port = data.context.server.address[1] 117 | c_port = data.context.client.peername[1] 118 | logging.info(f"{c_port} {s_host}:{s_port}") 119 | 120 | def tls_start_server(self, tls_start: tls.TlsData) -> None: 121 | super().tls_start_server(tls_start) 122 | tls_start.ssl_conn.verify_host1 = tls_start.conn.sni 123 | tls_start.ssl_conn.verify_host2 = tls_start.context.client.sni 124 | if tls_start.conn.sni.startswith("_"): 125 | tls_start.ssl_conn.set_tlsext_host_name(b"") 126 | tls_start.ssl_conn.verify_host1 = tls_start.conn.sni[1:] 127 | tls_start.ssl_conn.set_verify(SSL.VERIFY_PEER, verify_callback) 128 | 129 | def _load_github_hosts(self) -> None: 130 | host_mappings: dict[str, Mapping] = {} 131 | star_mappings: dict[str, Mapping] = {} 132 | tcp_hosts: list[str] = [] 133 | 134 | for mapping in self.yaml_config["mappings"]: 135 | address = mapping.get("address") 136 | sni = mapping.get("sni") 137 | if address is not None: 138 | address = (address.split(':')[0], int(address.split(':')[1])) 139 | 140 | item = Mapping( 141 | sni=sni, 142 | address=address, 143 | ) 144 | for host in mapping["hosts"]: 145 | if host.startswith("*."): 146 | star_mappings[host[2:]] = item 147 | if sni is not None: 148 | tcp_hosts.append(host[1:].replace('.', r'\.')) 149 | else: 150 | host_mappings[host] = item 151 | if sni is not None: 152 | tcp_hosts.append(host.replace('.', r'\.')) 153 | 154 | self.host_mappings = host_mappings 155 | self.star_mappings = star_mappings 156 | self.tcp_hosts = tcp_hosts 157 | 158 | def _get_sni(self, host: str) -> Mapping | None: 159 | mapping = self.host_mappings.get(host) 160 | if mapping is not None: 161 | return mapping 162 | 163 | index = 0 164 | while True: 165 | index = host.find(".", index) 166 | if index == -1: 167 | break 168 | super_domain = host[(index + 1):] 169 | mapping = self.star_mappings.get(super_domain) 170 | if mapping is not None: 171 | return mapping 172 | index += 1 173 | 174 | return None 175 | 176 | 177 | addons = [GithubHosts()] 178 | --------------------------------------------------------------------------------