WeChatMsg/app/util/emoji.py

# -*- coding: utf-8 -*-
"""
emoji.py

!!!声明：
由于表情包并不属于个人，并且其可能具有版权风险，你只有浏览权没有拥有权
另外访问腾讯API可能会给腾讯服务器造成压力
所以禁止任何人以任何方式修改或间接修改该文件，违者后果自负
"""

import os
import traceback
import xml.etree.ElementTree as ET
import sqlite3
import threading
from PyQt5.QtGui import QPixmap
import requests

from app.log import log, logger
lock = threading.Lock()
db_path = "./app/Database/Msg/Emotion.db"
root_path = './data/emoji/'
if not os.path.exists('./data'):
    os.mkdir('./data')
if not os.path.exists(root_path):
    os.mkdir(root_path)


@log
def get_image_format(header):
    # 定义图片格式的 magic numbers
    image_formats = {
        b'\xFF\xD8\xFF': 'jpeg',
        b'\x89\x50\x4E\x47\x0D\x0A\x1A\x0A': 'png',
        b'\x47\x49\x46': 'gif',
        b'\x42\x4D': 'bmp',
        # 添加其他图片格式的 magic numbers
    }
    # 判断文件的图片格式
    for magic_number, image_format in image_formats.items():
        if header.startswith(magic_number):
            return image_format
    # 如果无法识别格式，返回 None
    return None


@log
def parser_xml(xml_string):
    assert type(xml_string) == str
    root = ET.fromstring(xml_string)
    emoji = root.find('./emoji')
    # Accessing attributes of the 'emoji' element
    fromusername = emoji.get('fromusername')
    tousername = emoji.get('tousername')
    md5 = emoji.get('md5')
    cdnurl = emoji.get('cdnurl')
    encrypturl = emoji.get('encrypturl')
    thumburl = emoji.get('thumburl')
    externurl = emoji.get('externurl')
    androidmd5 = emoji.get('androidmd5')
    width = emoji.get('width')
    height = emoji.get('height')
    return {
        'width': width,
        'height': height,
        'cdnurl': cdnurl,
        'thumburl': thumburl if thumburl else cdnurl,
        'md5': (md5 if md5 else androidmd5).lower(),
    }

def singleton(cls):
    _instance = {}

    def inner():
        if cls not in _instance:
            _instance[cls] = cls()
        return _instance[cls]

    return inner

# 一定要保证只有一个实例对象
@singleton
class Emotion:
    def __init__(self):
        self.DB = None
        self.cursor: sqlite3.Cursor = None
        self.open_flag = False
        self.init_database()

    def init_database(self):
        if not self.open_flag:
            if os.path.exists(db_path):
                self.DB = sqlite3.connect(db_path, check_same_thread=False)
                # '''创建游标'''
                self.cursor = self.DB.cursor()
                self.open_flag = True
                if lock.locked():
                    lock.release()

    def get_emoji_url(self, md5: str, thumb: bool) -> str | bytes:
        '''供下载用，返回可能是url可能是bytes'''
        if thumb:
            sql = '''
                select
                    case
                        when thumburl is NULL or thumburl = '' then cdnurl
                        else thumburl
                    end as selected_url
                from CustomEmotion
                where md5 = ?
            '''
        else:
            sql = '''
                select CDNUrl
                from CustomEmotion
                where md5 = ?
            '''
        try:
            lock.acquire(True)
            self.cursor.execute(sql, [md5])
            return self.cursor.fetchone()[0]
        except:
            md5 = md5.upper()
            sql = f"""
                select {"Thumb" if thumb else "Data"}
                from EmotionItem
                where md5 = ?
            """
            self.cursor.execute(sql, [md5])
            res = self.cursor.fetchone()
            return res[0] if res else ''
        finally:
            lock.release()

    def get_emoji_URL(self, md5: str, thumb: bool):
        '''只管url，另外的不管'''
        if thumb:
            sql = '''
                select
                    case
                        when thumburl is NULL or thumburl = '' then cdnurl
                        else thumburl
                    end as selected_url
                from CustomEmotion
                where md5 = ?
            '''
        else:
            sql = '''
                select CDNUrl
                from CustomEmotion
                where md5 = ?
            '''
        try:
            lock.acquire(True)
            self.cursor.execute(sql, [md5])
            return self.cursor.fetchone()[0]
        except:
            return ""
        finally:
            lock.release()
    def close(self):
        if self.open_flag:
            try:
                lock.acquire(True)
                self.open_flag = False
                self.DB.close()
            finally:
                lock.release()

    def __del__(self):
        self.close()


@log
def download(url, output_dir, name, thumb=False):
    resp = requests.get(url)
    byte = resp.content
    image_format = get_image_format(byte[:8])
    if image_format:
        if thumb:
            output_path = os.path.join(output_dir, 'th_' + name + '.' + image_format)
        else:
            output_path = os.path.join(output_dir, name + '.' + image_format)
    else:
        output_path = os.path.join(output_dir, name)
    with open(output_path, 'wb') as f:
        f.write(resp.content)
    return output_path


def get_most_emoji(messages):
    dic = {}
    for msg in messages:
        str_content = msg[7]
        emoji_info = parser_xml(str_content)
        if emoji_info is None:
            continue
        md5 = emoji_info['md5']
        if not md5:
            continue
        try:
            dic[md5][0] += 1
        except:
            dic[md5] = [1, emoji_info]
    md5_nums = [(num[0], key, num[1]) for key, num in dic.items()]
    md5_nums.sort(key=lambda x: x[0], reverse=True)
    if not md5_nums:
        return '', 0
    md5 = md5_nums[0][1]
    num = md5_nums[0][0]
    emoji_info = md5_nums[0][2]
    url = emoji_info['cdnurl']
    if not url or url == "":
        url = Emotion().get_emoji_url(md5, False)
    return url, num


def get_emoji(xml_string, thumb=True, output_path=root_path) -> str:
    """供下载用"""
    try:
        emoji_info = parser_xml(xml_string)
        md5 = emoji_info['md5']
        image_format = ['.png', '.gif', '.jpeg']
        for f in image_format:
            prefix = 'th_' if thumb else ''
            file_path = os.path.join(output_path, prefix + md5 + f)
            if os.path.exists(file_path):
                return file_path
        url = emoji_info['thumburl'] if thumb else emoji_info['cdnurl']
        if not url or url == "":
            url = Emotion().get_emoji_url(md5, thumb)
        if type(url) == str and url != "":
            print("下载表情包ing:", url)
            emoji_path = download(url, output_path, md5, thumb)
            return emoji_path
        elif type(url) == bytes:
            image_format = get_image_format(url[:8])
            if image_format:
                if thumb:
                    output_path = os.path.join(output_path, 'th_' + md5 + '.' + image_format)
                else:
                    output_path = os.path.join(output_path, md5 + '.' + image_format)
            else:
                output_path = os.path.join(output_path, md5)
            with open(output_path, 'wb') as f:
                f.write(url)
            print("表情包数据库加载", output_path)
            return output_path
        else:
            print("！！！未知表情包数据，信息：", xml_string, emoji_info, url)
            output_path = os.path.join(output_path, '404.png')
            if not os.path.exists(output_path):
                QPixmap(':/icons/icons/404.png').save(output_path)
            return output_path
    except:
        logger.error(traceback.format_exc())
        output_path = os.path.join(output_path, "404.png")
        if not os.path.exists(output_path):
            QPixmap(':/icons/icons/404.png').save(output_path)
        return output_path


def get_emoji_path(xml_string, thumb=True, output_path=root_path) -> str:
    try:
        emoji_info = parser_xml(xml_string)
        md5 = emoji_info['md5']
        image_format = ['.png', '.gif', '.jpeg']
        for f in image_format:
            prefix = 'th_' if thumb else ''
            file_path = os.path.join(output_path, prefix + md5 + f)
            return file_path
    except:
        logger.error(traceback.format_exc())
        output_path = os.path.join(output_path, "404.png")
        return output_path
    
def get_emoji_url(xml_string, thumb=True) -> str:
    """不管下载，只返回url"""
    try:
        emoji_info = parser_xml(xml_string)
        md5 = emoji_info['md5']
        url = emoji_info["thumburl" if thumb else "cdnurl"]
        if not url or url == '':
            url = Emotion().get_emoji_URL(md5=md5, thumb=thumb)
        return url
    except:
        logger.error(traceback.format_exc())
        output_path = os.path.join("./emoji/404.png")
        return output_path


if __name__ == '__main__':
    # xml_string = '<msg><emoji fromusername = "wxid_0o18ef858vnu22" tousername = "wxid_27hqbq7vx5hf22" type="2" idbuffer="media:0_0" md5="71ce49ed3ce9e57e43e07f802983bf45" len = "352588" productid="com.tencent.xin.emoticon.person.stiker_1678703862259eb01f2ef4a313" androidmd5="71ce49ed3ce9e57e43e07f802983bf45" androidlen="352588" s60v3md5 = "71ce49ed3ce9e57e43e07f802983bf45" s60v3len="352588" s60v5md5 = "71ce49ed3ce9e57e43e07f802983bf45" s60v5len="352588" cdnurl = "http://wxapp.tc.qq.com/262/20304/stodownload?m=71ce49ed3ce9e57e43e07f802983bf45&amp;filekey=30350201010421301f020201060402535a041071ce49ed3ce9e57e43e07f802983bf45020305614c040d00000004627466730000000132&amp;hy=SZ&amp;storeid=263ffa00b000720d03274c5820000010600004f50535a1ca0c950b64287022&amp;bizid=1023" designerid = "" thumburl = "http://mmbiz.qpic.cn/mmemoticon/ajNVdqHZLLDSKTMRgM8agiadpFhKz9IJ3cD5Ra2sTROibOaShdt3D4z6PfE92WkjQY/0" encrypturl = "http://wxapp.tc.qq.com/262/20304/stodownload?m=cbaae1d847aac6389652b65562bacaa2&amp;filekey=30350201010421301f020201060402535a0410cbaae1d847aac6389652b65562bacaa20203056150040d00000004627466730000000132&amp;hy=SZ&amp;storeid=263ffa00b0008d8223274c5820000010600004f50535a17b82910b64764739&amp;bizid=1023" aeskey= "7051ab2a34442dec63434832463f45ce" externurl = "http://wxapp.tc.qq.com/262/20304/stodownload?m=960f68693454dfa64b9966ca5d70dbd3&amp;filekey=30340201010420301e020201060402535a0410960f68693454dfa64b9966ca5d70dbd3020221a0040d00000004627466730000000132&amp;hy=SZ&amp;storeid=26423dbe3000793a8720e40de0000010600004f50535a1d40c950b71be0a50&amp;bizid=1023" externmd5 = "41895664fc5a77878e2155fc96209a19" width= "240" height= "240" tpurl= "" tpauthkey= "" attachedtext= "" attachedtextcolor= "" lensid= "" emojiattr= "" linkid= "" desc= "ChEKB2RlZmF1bHQSBuWNlee6rw==" ></emoji> </msg>'
    # res1 = parser_xml(xml_string)
    # print(res1, res1['md5'])
    # download(res1['cdnurl'], "./data/emoji/", res1['md5'])
    # download(res1['thumburl'], "./data/emoji/", res1['md5'], True)
    # print(Emotion().get_emoji_url("144714f65c98844128ac3a1042445d9a", True))
    # print(Emotion().get_emoji_url("144714f65c98844128ac3a1042445d9a", False))
    print(parser_xml(""))
    # print(get_emoji(xml_string, True))
    # print(get_emoji(xml_string, False))
#     http://vweixinf.tc.qq.com/110/20403/stodownload?m=3a4d439aba02dce4834b2c54e9f15597&filekey=3043020101042f302d02016e0402534804203361346434333961626130326463653438333462326335346539663135353937020213f0040d00000004627466730000000131&hy=SH&storeid=323032313037323030373236313130303039653236646365316535316534383236386234306230303030303036653033303034666233&ef=3&bizid=1022