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# -*- coding: utf-8 -*-
# Copyright 2019-2025 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.
"""Extractors for https://hentainexus.com/"""
from .common import GalleryExtractor, Extractor, Message
from .. import text, util
import binascii
class HentainexusGalleryExtractor(GalleryExtractor):
"""Extractor for hentainexus galleries"""
category = "hentainexus"
root = "https://hentainexus.com"
pattern = (r"(?i)(?:https?://)?(?:www\.)?hentainexus\.com"
r"/(?:view|read)/(\d+)")
example = "https://hentainexus.com/view/12345"
def __init__(self, match):
self.gallery_id = match[1]
url = f"{self.root}/view/{self.gallery_id}"
GalleryExtractor.__init__(self, match, url)
def metadata(self, page):
rmve = text.remove_html
extr = text.extract_from(page)
data = {
"gallery_id": text.parse_int(self.gallery_id),
"cover" : extr('"og:image" content="', '"'),
"title" : extr('<h1 class="title">', '</h1>'),
}
for key in ("Artist", "Book", "Circle", "Event", "Language",
"Magazine", "Parody", "Publisher", "Description"):
value = rmve(extr('viewcolumn">' + key + '</td>', '</td>'))
value, sep, rest = value.rpartition(" (")
data[key.lower()] = value if sep else rest
data["tags"] = tags = []
for k in text.extract_iter(page, '<a href="/?q=tag:', '"'):
tags.append(text.unquote(k).strip('"').replace("+", " "))
if not data["language"]:
data["language"] = "English"
data["lang"] = util.language_to_code(data["language"])
if "doujin" in data["tags"]:
data["type"] = "Doujinshi"
elif "illustration" in data["tags"]:
data["type"] = "Illustration"
else:
data["type"] = "Manga"
data["title_conventional"] = self._join_title(data)
return data
def images(self, _):
url = f"{self.root}/read/{self.gallery_id}"
page = self.request(url).text
imgs = util.json_loads(self._decode(text.extr(
page, 'initReader("', '"')))
headers = None
if not self.config("original", True):
headers = {"Accept": "image/webp,*/*"}
for img in imgs:
img["_http_headers"] = headers
results = []
for img in imgs:
try:
results.append((img["image"], img))
except KeyError:
pass
return results
def _decode(self, data):
# https://hentainexus.com/static/js/reader.min.js?r=22
hostname = "hentainexus.com"
primes = (2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53)
blob = list(binascii.a2b_base64(data))
for i in range(0, len(hostname)):
blob[i] = blob[i] ^ ord(hostname[i])
key = blob[0:64]
C = 0
for k in key:
C = C ^ k
for _ in range(8):
if C & 1:
C = C >> 1 ^ 0xc
else:
C = C >> 1
k = primes[C & 0x7]
x = 0
S = list(range(256))
for i in range(256):
x = (x + S[i] + key[i % len(key)]) % 256
S[i], S[x] = S[x], S[i]
result = ""
a = c = m = x = 0
for n in range(64, len(blob)):
a = (a + k) % 256
x = (c + S[(x + S[a]) % 256]) % 256
c = (c + a + S[a]) % 256
S[a], S[x] = S[x], S[a]
m = S[(x + S[(a + S[(m + c) % 256]) % 256]) % 256]
result += chr(blob[n] ^ m)
return result
def _join_title(self, data):
event = data['event']
artist = data['artist']
circle = data['circle']
title = data['title']
parody = data['parody']
book = data['book']
magazine = data['magazine']
# a few galleries have a large number of artists or parodies,
# which get replaced with "Various" in the title string
if artist.count(',') >= 3:
artist = 'Various'
if parody.count(',') >= 3:
parody = 'Various'
jt = ''
if event:
jt += f'({event}) '
if circle:
jt += f'[{circle} ({artist})] '
else:
jt += f'[{artist}] '
jt += title
if parody.lower() != 'original work':
jt += f' ({parody})'
if book:
jt += f' ({book})'
if magazine:
jt += f' ({magazine})'
return jt
class HentainexusSearchExtractor(Extractor):
"""Extractor for hentainexus search results"""
category = "hentainexus"
subcategory = "search"
root = "https://hentainexus.com"
pattern = (r"(?i)(?:https?://)?(?:www\.)?hentainexus\.com"
r"(?:/page/\d+)?/?(?:\?(q=[^/?#]+))?$")
example = "https://hentainexus.com/?q=QUERY"
def items(self):
params = text.parse_query(self.groups[0])
data = {"_extractor": HentainexusGalleryExtractor}
path = "/"
while path:
page = self.request(self.root + path, params=params).text
extr = text.extract_from(page)
while True:
gallery_id = extr('<a href="/view/', '"')
if not gallery_id:
break
yield Message.Queue, self.root + "/view/" + gallery_id, data
path = extr('class="pagination-next" href="', '"')
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