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我正在尝试压缩字典以访问 API。
我阅读了某人使用 JavaScript 和一个名为“pako”的库压缩数据的代码,并亲自尝试过。它完美地工作:

var myDictionary = {...}

var b = pako.deflate(JSON.stringify(a), { 
    to: "string", 
    gzip: !0 
  }); 
  return b = btoa(b) 
}

var compressed = b(n)

现在我想对 Python 做同样的事情:我尝试了以下方法,但结果不同并且不起作用:

my_dictionary = {...}
data_json = json.dumps(my_dictionary, ensure_ascii=False)
data_gzip = zlib.compress(bytes(data_json, "utf-8"))
compressed = base64.b64encode(bytes(str(data_gzip), "utf-8"))

有没有人理想的如何用 Python 解决这个问题?是否有与 Python 的 pako 类似的库?

4

2 回答 2

4

如果有人仍在 python 3 中寻找 pako 等效方法(未在 python 2 中测试)。

python 中等效的 pako.deflate() 方法:

def pako_deflate(data):
    compress  = zlib.compressobj(zlib.Z_DEFAULT_COMPRESSION, zlib.DEFLATED, 15, 
        memLevel=8, strategy=zlib.Z_DEFAULT_STRATEGY)
    compressed_data = compress.compress(js_string_to_byte(js_encode_uri_component(data)))
    compressed_data += compress.flush()
    return compressed_data

python 中的 pako.deflateRaw() 等价物:

def pako_deflate_raw(data):
    compress = zlib.compressobj(
        zlib.Z_DEFAULT_COMPRESSION, zlib.DEFLATED, -15, memLevel=8,
        strategy=zlib.Z_DEFAULT_STRATEGY)
    compressed_data = compress.compress(js_string_to_byte(js_encode_uri_component(data)))
    compressed_data += compress.flush()
    return compressed_data

pako.inflate() 方法等效:

def pako_inflate(data):
    decompress = zlib.decompressobj(15)
    decompressed_data = decompress.decompress(data)
    decompressed_data += decompress.flush()
    return decompressed_data

pako.inflateRaw() 方法等效:

def pako_inflate_raw(data):
    decompress = zlib.decompressobj(-15)
    decompressed_data = decompress.decompress(data)
    decompressed_data += decompress.flush()
    return decompressed_data

上述函数中使用的一些实用函数是:

from urllib.parse import quote, unquote
import base64

def js_encode_uri_component(data):
    return quote(data, safe='~()*!.\'')


def js_decode_uri_component(data):
    return unquote(data)


def js_string_to_byte(data):
    return bytes(data, 'iso-8859-1')


def js_bytes_to_string(data):
    return data.decode('iso-8859-1')


def js_btoa(data):
    return base64.b64encode(data)


def js_atob(data):
    return base64.b64decode(data)
于 2019-11-26T12:49:45.073 回答
0
from urllib import quote, unquote
import base64
import zlib


def js_encode_uri_component(data):
    return quote(data)

def js_string_to_byte(data):
    return bytes(data)


def js_bytes_to_string(data):
    return data.decode('iso-8859-1')


def js_btoa(data):
    return base64.b64encode(data)


def js_atob(data):
    return base64.b64decode(data)


def pako_inflate_raw(data):
    decompress = zlib.decompressobj(-15)
    decompressed_data = decompress.decompress(data)
    decompressed_data += decompress.flush()
    return decompressed_data



def pako_deflate_raw(data):
    compress = zlib.compressobj(
        zlib.Z_DEFAULT_COMPRESSION, zlib.DEFLATED, -15, 8,
        zlib.Z_DEFAULT_STRATEGY)
    compressed_data = compress.compress(js_string_to_byte(js_encode_uri_component(data)))
    compressed_data += compress.flush()
    return compressed_data

data = "0b cb 49 cc 4b 67 30 64 28 c8 2f 4f 2d 2a ce 48 cd c9 61 70 d3 4b ce 4f 49 d5 2b c9 cc 67 30 34 35 60 48 4d ce c8 57 50 37 a8 48 31 30 a8 b0 1e 08 00 76 80 52 5a 9a a5 a1 a1 a1 25 18 28 55 a8 bb e9 65 e6 15 94 96 80 5d 69 c0 10 96 58 94 5e 0c a4 83 00".replace(" ","").decode("hex")

data_main = """Vlang\x001\x00powershell\x00F.code.tio\x0038\x00echo \'0xd00\xe2\x80\x83;echo "ff9111999999"\xe2\x80\x83\'F.input.tio\x000\x00Vargs\x000\x00R"""

print repr(pako_inflate_raw(data))

print repr(pako_deflate_raw(data_main))
于 2020-08-26T10:23:42.267 回答