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gallery-dl/gallery_dl/extractor/sankaku.py
2018-01-09 21:43:52 +01:00

244 lines
8.3 KiB
Python

# -*- coding: utf-8 -*-
# Copyright 2014-2017 Mike Fährmann
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
"""Extract images from https://chan.sankakucomplex.com/"""
from .common import SharedConfigExtractor, Message
from .. import text, util, exception
from ..cache import cache
import time
import random
class SankakuExtractor(SharedConfigExtractor):
"""Base class for sankaku extractors"""
basecategory = "booru"
category = "sankaku"
filename_fmt = "{category}_{id}_{md5}.{extension}"
cookienames = ("login", "pass_hash")
cookiedomain = "chan.sankakucomplex.com"
subdomain = "chan"
def __init__(self):
SharedConfigExtractor.__init__(self)
self.root = "https://" + self.cookiedomain
self.logged_in = True
self.start_page = 1
self.start_post = 0
self.wait_min = self.config("wait-min", 2)
self.wait_max = self.config("wait-max", 4)
if self.wait_max < self.wait_min:
self.wait_max = self.wait_min
def items(self):
self.login()
yield Message.Version, 1
yield Message.Directory, self.get_metadata()
for post_id in util.advance(self.get_posts(), self.start_post):
self.wait()
data = self.get_post_data(post_id)
url = data["file_url"]
yield Message.Url, url, text.nameext_from_url(url, data)
def skip(self, num):
self.start_post += num
return num
def get_metadata(self):
"""Return general metadata"""
return {}
def get_posts(self):
"""Return an iterable containing all relevant post ids"""
def get_post_data(self, post_id, extr=text.extract):
"""Extract metadata of a single post"""
url = self.root + "/post/show/" + post_id
page = self.request(url, retries=10).text
tags , pos = extr(page, "<title>", " | ")
vavg , pos = extr(page, "itemprop=ratingValue>", "<", pos)
vcnt , pos = extr(page, "itemprop=reviewCount>", "<", pos)
_ , pos = extr(page, "Posted: <", "", pos)
created, pos = extr(page, ' title="', '"', pos)
rating = extr(page, "<li>Rating: ", "<", pos)[0]
file_url, pos = extr(page, '<li>Original: <a href="', '"', pos)
if file_url:
width , pos = extr(page, '>', 'x', pos)
height, pos = extr(page, '', ' ', pos)
else:
width , pos = extr(page, '<object width=', ' ', pos)
height, pos = extr(page, 'height=', '>', pos)
file_url = extr(page, '<embed src="', '"', pos)[0]
return {
"id": util.safe_int(post_id),
"md5": file_url.rpartition("/")[2].partition(".")[0],
"tags": tags,
"vote_average": float(vavg or 0),
"vote_count": util.safe_int(vcnt),
"created_at": created,
"rating": (rating or "?")[0].lower(),
"file_url": "https:" + text.unescape(file_url),
"width": util.safe_int(width),
"height": util.safe_int(height),
}
def wait(self):
"""Wait for a randomly chosen amount of seconds"""
time.sleep(random.uniform(self.wait_min, self.wait_max))
def login(self):
"""Login and set necessary cookies"""
if self._check_cookies(self.cookienames):
return
username, password = self._get_auth_info()
if username:
cookies = self._login_impl((username, self.subdomain), password)
for key, value in cookies.items():
self.session.cookies.set(
key, value, domain=self.cookiedomain)
else:
self.logged_in = False
@cache(maxage=90*24*60*60, keyarg=1)
def _login_impl(self, usertuple, password):
"""Actual login implementation"""
username = usertuple[0]
self.log.info("Logging in as %s", username)
params = {
"url": "",
"user[name]": username,
"user[password]": password,
"commit": "Login",
}
response = self.request(self.root + "/user/authenticate",
method="POST", params=params)
if not response.history or response.url != self.root + "/user/home":
raise exception.AuthenticationError()
cookies = response.history[0].cookies
return {c: cookies[c] for c in self.cookienames}
class SankakuTagExtractor(SankakuExtractor):
"""Extractor for images from chan.sankakucomplex.com by search-tags"""
subcategory = "tag"
directory_fmt = ["{category}", "{tags}"]
pattern = [r"(?:https?://)?chan\.sankakucomplex\.com"
r"/\?(?:[^&#]*&)*tags=([^&#]+)"]
test = [
("https://chan.sankakucomplex.com/?tags=bonocho", {
"count": 5,
"pattern": (r"https://cs\.sankakucomplex\.com/data/[^/]{2}/[^/]{2}"
r"/[^/]{32}\.\w+\?e=\d+&m=[^&#]+"),
}),
("https://chan.sankakucomplex.com/?tags=bonocho+a+b+c+d", {
"options": (("username", None),),
"exception": exception.StopExtraction,
})
]
per_page = 20
def __init__(self, match):
SankakuExtractor.__init__(self)
self.tags = text.unquote(match.group(1).replace("+", " "))
def skip(self, num):
pages, posts = divmod(num, self.per_page)
if pages > 49:
self.log.info("Cannot skip more than 50 pages ahead.")
pages, posts = 49, self.per_page
self.start_page += pages
self.start_post += posts
return pages * self.per_page + posts
def get_metadata(self):
tags = self.tags.split()
if not self.logged_in and len(tags) > 4:
self.log.error("Unauthenticated users cannot use "
"more than 4 tags at once.")
raise exception.StopExtraction()
return {"tags": " ".join(tags)}
def get_posts(self):
params = {"tags": self.tags, "page": self.start_page}
while self.logged_in or params["page"] <= 25:
page = self.request(self.root, params=params, retries=10).text
pos = page.find("<div id=more-popular-posts-link>") + 1
ids = list(text.extract_iter(page, '" id=p', '>', pos))
if not ids:
return
yield from ids
params["page"] += 1
params["next"] = int(ids[-1]) - 1
self.log.warning(
"Unauthenticated users may only access the first 500 images / 25 "
"pages. (Use '--range 501-' to continue downloading from this "
"point onwards after setting up an account.)")
class SankakuPoolExtractor(SankakuExtractor):
"""Extractor for image-pools from chan.sankakucomplex.com"""
subcategory = "pool"
directory_fmt = ["{category}", "pool", "{pool}"]
pattern = [r"(?:https?://)?chan\.sankakucomplex\.com/pool/show/(\d+)"]
test = [("https://chan.sankakucomplex.com/pool/show/90", {
"count": 5,
})]
per_page = 24
def __init__(self, match):
SankakuExtractor.__init__(self)
self.pool_id = match.group(1)
def skip(self, num):
pages, posts = divmod(num, self.per_page)
self.start_page += pages
self.start_post += posts
return num
def get_metadata(self):
return {"pool": self.pool_id}
def get_posts(self):
url = self.root + "/pool/show/" + self.pool_id
params = {"page": self.start_page}
while True:
page = self.request(url, params=params, retries=10).text
ids = list(text.extract_iter(page, '" id=p', '>'))
yield from ids
if len(ids) < self.per_page:
return
params["page"] += 1
class SankakuPostExtractor(SankakuExtractor):
"""Extractor for single images from chan.sankakucomplex.com"""
subcategory = "post"
pattern = [r"(?:https?://)?chan\.sankakucomplex\.com/post/show/(\d+)"]
test = [("https://chan.sankakucomplex.com/post/show/360451", {
"content": "5e255713cbf0a8e0801dc423563c34d896bb9229",
"count": 1,
})]
def __init__(self, match):
SankakuExtractor.__init__(self)
self.post_id = match.group(1)
def get_posts(self):
return (self.post_id,)