rewrite ipinfo into a class
This commit is contained in:
parent
d0d29bd0d4
commit
0603081c49
5 changed files with 197 additions and 174 deletions
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@ -1,5 +1,4 @@
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from .structs import Options
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from .ip_info import find_country, flush
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def detect_gfw(r, ip, check):
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@ -149,11 +148,12 @@ async def try_ip(db, server_ip, checks, opts: Options):
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else:
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await pooler()
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await find_country(server_ip, db)
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for entry in entries:
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for addr in entry.addrs:
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await find_country(addr, db)
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flush()
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if opts.ipinfo is not None:
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await opts.ipinfo.find_country(server_ip, db)
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for entry in entries:
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for addr in entry.addrs:
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await opts.ipinfo.find_country(addr, db)
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opts.ipinfo.flush()
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if not opts.dry:
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for entry in entries:
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@ -173,16 +173,18 @@ async def try_ip(db, server_ip, checks, opts: Options):
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return server_ip, None
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async def sync_database(db):
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async def sync_database(db, opts: Options):
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# TODO: handle addresses that were removed from respodns.ips.china.
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from .ips import china, blocks
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for ip in china:
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code = await find_country(ip)
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db.modify_address(ip, china=True, country_code=code)
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for ip in blocks:
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code = await find_country(ip)
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db.modify_address(ip, block_target=True, country_code=code)
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flush()
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for ips, kw in ((china, "china"), (blocks, "block_target")):
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for ip in ips:
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kwargs = dict()
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kwargs[kw] = True
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if opts.ipinfo is not None:
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kwargs["country_code"] = await opts.ipinfo.find_country(ip)
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db.modify_address(ip, **kwargs)
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if opts.ipinfo is not None:
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opts.ipinfo.flush()
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async def main(db, filepath, checks, opts: Options):
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@ -192,7 +194,7 @@ async def main(db, filepath, checks, opts: Options):
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from sys import stdin
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if db is not None:
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await sync_database(db)
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await sync_database(db, opts)
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def finisher(done, pending):
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for task in done:
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@ -1,200 +1,217 @@
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from asyncio import open_connection, sleep
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from collections import namedtuple
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from socket import gaierror
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from sys import stderr
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from time import time
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CacheLine = namedtuple("CacheLine", ("time", "code"))
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header = ["ip", "time", "code"]
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one_month = 365.25 / 12 * 24 * 60 * 60 # in seconds
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encoding = "latin-1"
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cache_filepath = "ipinfo_cache.csv"
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http_cooldown = 0
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give_up = False
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prepared = False
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stored = None
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async def http_lookup(ip):
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global http_cooldown
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class IpInfoBase:
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pass
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host = "ip-api.com"
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path = f"/csv/{ip}?fields=2"
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err = None
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class IpInfoByIpApi(IpInfoBase):
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def __init__(self, filepath, expiry=one_month):
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self.filepath = filepath
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self.expiry = expiry
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self.cooldown = 0
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self.give_up = False
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self.prepared = False
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self.stored = None
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# Quote:
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# Your implementation should always check the value of the X-Rl header,
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# and if its is 0 you must not send any more requests
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# for the duration of X-Ttl in seconds.
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while time() < http_cooldown:
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wait = http_cooldown - time()
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wait = max(wait, 0.1) # wait at least a little bit
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await sleep(wait)
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self.encoding = "latin-1"
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self.host = "ip-api.com"
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self.path = "/csv/{}?fields=2"
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self.csv_header = ["ip", "time", "code"]
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query_lines = (
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f"GET {path} HTTP/1.1",
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f"Host: {host}",
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f"Connection: close",
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)
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query = "\r\n".join(query_lines) + "\r\n\r\n"
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def decode(self, txt, mode="ignore"):
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return txt.decode(self.encoding, mode)
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reader, writer = await open_connection(host, 80)
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def encode(self, txt, mode="ignore"):
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return txt.encode(self.encoding, mode)
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writer.write(query.encode(encoding, "strict"))
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response = await reader.read()
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lines = response.splitlines()
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def _parse_headers(self, it):
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# returns an error message as a string, or None.
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for line in it:
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if line == b"":
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break # end of header
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it = iter(lines)
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line = next(it)
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if line != b"HTTP/1.1 200 OK":
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http_cooldown = time() + 60
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err = "not ok"
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it = () # exhaust iterator (not really)
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head, _, tail = line.partition(b":")
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x_cooldown = None
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x_remaining = None
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for line in it:
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if line == b"":
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break
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head, _, tail = line.partition(b":")
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# do some very basic validation.
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if tail[0:1] == b" ":
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tail = tail[1:]
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else:
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err = "bad tail"
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break
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if head in (b"Date", b"Content-Type", b"Content-Length",
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b"Access-Control-Allow-Origin"):
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pass
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elif head == b"X-Ttl":
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if tail.isdigit():
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x_cooldown = int(tail)
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# do some very basic validation.
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if tail[0:1] == b" ":
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tail = tail[1:]
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else:
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err = "X-Ttl not integer"
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break
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elif head == b"X-Rl":
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if tail.isdigit():
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x_remaining = int(tail)
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s = self.decode(line, "replace")
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return "bad tail: " + s
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if head in (b"Date", b"Content-Type", b"Content-Length",
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b"Access-Control-Allow-Origin"):
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pass
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elif head == b"X-Ttl":
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if tail.isdigit():
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x_cooldown = int(tail)
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else:
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s = self.decode(tail, "replace")
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return "X-Ttl not an integer: " + s
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elif head == b"X-Rl":
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if tail.isdigit():
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x_remaining = int(tail)
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else:
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s = self.decode(tail, "replace")
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return "X-Rl not an integer: " + s
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else:
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err = "X-Rl not integer"
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break
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s = self.decode(head, "replace")
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return "unexpected field: " + s
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for i, line in enumerate(it):
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if i == 0:
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code = line
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else:
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err = "too many lines"
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break
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if x_remaining == 0:
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self.cooldown = time() + x_cooldown
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self.cooldown += 1.0 # still too frequent according to them
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writer.close()
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return None # no error
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if x_remaining == 0:
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http_cooldown = time() + x_cooldown
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http_cooldown += 1.0 # still too frequent according to them
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async def wait(self):
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from asyncio import sleep
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if err:
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return None, err
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else:
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return code, None
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# Quote:
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# Your implementation should always check the value of the X-Rl header,
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# and if its is 0 you must not send any more requests
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# for the duration of X-Ttl in seconds.
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while time() < self.cooldown:
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wait = self.cooldown - time()
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wait = max(wait, 0.1) # wait at least a little bit
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await sleep(wait)
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async def http_lookup(self, ip):
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from asyncio import open_connection
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async def lookup(ip, timestamp):
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global give_up
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if give_up:
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return None
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await self.wait()
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try:
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code, err = await http_lookup(ip)
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if err:
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# retry once in case of rate-limiting
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code, err = await http_lookup(ip)
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if err:
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return None
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except gaierror:
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give_up = True
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except OSError:
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give_up = True
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path = self.path.format(ip)
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query_lines = (
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f"GET {path} HTTP/1.1",
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f"Host: {self.host}",
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f"Connection: close",
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)
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query = "\r\n".join(query_lines) + "\r\n\r\n"
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code = code.decode(encoding, "ignore")
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if code == "":
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code = "--"
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if len(code) != 2:
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return None
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info = CacheLine(timestamp, code)
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return info
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reader, writer = await open_connection(self.host, 80)
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writer.write(self.encode(query, "strict"))
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response = await reader.read()
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lines = response.splitlines()
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def prepare():
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from csv import reader, writer
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from os.path import exists
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err = None
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it = iter(lines)
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global stored
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stored = dict()
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line = next(it)
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if line != b"HTTP/1.1 200 OK":
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self.cooldown = time() + 60
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err = "not ok"
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it = () # exhaust iterator (not really)
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if not exists(cache_filepath):
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with open(cache_filepath, "w") as f:
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handle = writer(f)
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handle.writerow(header)
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return
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x_cooldown = None
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x_remaining = None
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with open(cache_filepath, "r", newline="", encoding="utf-8") as f:
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for i, row in enumerate(reader(f)):
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if err is None:
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err = self._parse_headers(it)
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for i, line in enumerate(it):
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if i == 0:
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assert row == header, row
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continue
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ip, time, code = row[0], float(row[1]), row[2]
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info = CacheLine(time, code)
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stored[ip] = info
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code = line
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else:
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err = "too many lines"
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break
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writer.close()
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def flush():
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from csv import writer
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if not stored:
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return
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with open(cache_filepath, "w", newline="", encoding="utf-8") as f:
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handle = writer(f)
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handle.writerow(header)
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for ip, info in stored.items():
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timestr = "{:.2f}".format(info.time)
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handle.writerow([ip, timestr, info.code])
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return (code, None) if err is None else (None, err)
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async def lookup(self, ip, timestamp):
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from socket import gaierror
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def cache(ip, info=None, timestamp=None, expiry=one_month):
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global stored
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if stored is None:
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prepare()
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now = time() if timestamp is None else timestamp
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if info is None:
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cached = stored.get(ip, None)
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if cached is None:
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if self.give_up:
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return None
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if now > cached.time + expiry:
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try:
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code, err = await self.http_lookup(ip)
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if err:
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# retry once in case of rate-limiting
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code, err = await self.http_lookup(ip)
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if err:
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return None
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except gaierror:
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give_up = True
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except OSError:
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give_up = True
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code = self.decode(code)
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if code == "":
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code = "--"
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if len(code) != 2:
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return None
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return cached
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else:
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assert isinstance(info, CacheLine)
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stored[ip] = info
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info = CacheLine(timestamp, code)
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return info
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def prepare(self):
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from csv import reader, writer
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from os.path import exists
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self.stored = dict()
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if not exists(self.filepath):
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with open(self.filepath, "w") as f:
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handle = writer(f)
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handle.writerow(self.csv_header)
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return
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with open(self.filepath, "r", newline="", encoding="utf-8") as f:
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for i, row in enumerate(reader(f)):
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if i == 0:
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assert row == self.csv_header, row
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continue
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ip, time, code = row[0], float(row[1]), row[2]
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info = CacheLine(time, code)
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self.stored[ip] = info
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def flush(self):
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from csv import writer
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if not self.stored:
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return
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with open(self.filepath, "w", newline="", encoding="utf-8") as f:
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handle = writer(f)
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handle.writerow(self.csv_header)
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for ip, info in self.stored.items():
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timestr = "{:.2f}".format(info.time)
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handle.writerow([ip, timestr, info.code])
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def cache(self, ip, info=None, timestamp=None):
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if self.stored is None:
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self.prepare()
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now = time() if timestamp is None else timestamp
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async def find_country(ip, db=None):
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now = time()
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info = cache(ip, timestamp=now)
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if info is None:
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info = await lookup(ip, now)
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if info is None:
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return None
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cache(ip, info)
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if db is not None:
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if db.country_code(ip) != info.code:
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assert info.code is not None
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db.country_code(ip, info.code)
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return info.code
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cached = self.stored.get(ip, None)
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if cached is None:
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return None
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if now > cached.time + self.expiry:
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return None
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return cached
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else:
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assert isinstance(info, CacheLine), type(info)
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self.stored[ip] = info
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async def find_country(self, ip, db=None):
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now = time()
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info = self.cache(ip, timestamp=now)
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if info is None:
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info = await self.lookup(ip, now)
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if info is None:
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return None
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self.cache(ip, info)
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if db is not None:
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if db.country_code(ip) != info.code:
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assert info.code is not None
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db.country_code(ip, info.code)
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return info.code
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@ -9,7 +9,7 @@ china = {
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"58.221.250.86",
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"58.222.226.146",
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"114.254.201.131",
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# "204.13.152.3", # not china but seems to be poisoned
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# "204.13.152.3", # not china but seems to be poisoned
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"218.94.128.126",
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"218.94.193.170",
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"218.107.55.108",
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@ -5,6 +5,7 @@ from dataclasses import dataclass
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@dataclass
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class Options:
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execution: object = None
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ipinfo: object = None
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ip_simul: int = 10 # how many IPs to connect to at once
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domain_simul: int = 3 # how many domains per IP to request at once
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@ -1,6 +1,7 @@
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def ui(program, args):
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from .db import RespoDB
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from .dns import main
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from .ip_info import IpInfoByIpApi
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from .structs import Options
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from argparse import ArgumentParser
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from asyncio import run
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@ -26,6 +27,8 @@ def ui(program, args):
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opts.dry = a.database is None
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opts.early_stopping = opts.dry
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opts.ipinfo = IpInfoByIpApi("ipinfo_cache.csv")
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if a.database is not None:
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if a.database.startswith("sqlite:"):
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uri = a.database
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