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鑒權代碼示例__周邊工具_CDN-阿裏雲

概述

URL鑒權規則請查閱 URL鑒權文檔，通過這個 demo 您可以根據業務需要，方便的對URL進行鑒權處理。以下Python Demo包含三種鑒權方式：A鑒權方式、B鑒權方式、C鑒權方式，分別描述了三種不同鑒權方式的請求URL構成、哈希字符串構成等內容

Python版本

import re
import time
import hashlib
import datetime
def md5sum(src):
    m = hashlib.md5()
    m.update(src)
    return m.hexdigest()
def a_auth(uri, key, exp):
    p = re.compile("^(https://|https://)?([^/?]+)(/[^?]*)?(\?.*)?$")
    if not p:
        return None
    m = p.match(uri)
    scheme, host, path, args = m.groups()
    if not scheme: scheme = "https://"
    if not path: path = "/"
    if not args: args = ""
    rand = "0"      # "0" by default, other value is ok
    uid = "0"       # "0" by default, other value is ok
    sstring = "%s-%s-%s-%s-%s" %(path, exp, rand, uid, key)
    hashvalue = md5sum(sstring)
    auth_key = "%s-%s-%s-%s" %(exp, rand, uid, hashvalue)
    if args:
        return "%s%s%s%s&auth_key=%s" %(scheme, host, path, args, auth_key)
    else:
        return "%s%s%s%s?auth_key=%s" %(scheme, host, path, args, auth_key)
def b_auth(uri, key, exp):
    p = re.compile("^(https://|https://)?([^/?]+)(/[^?]*)?(\?.*)?$")
    if not p:
        return None
    m = p.match(uri)
    scheme, host, path, args = m.groups()
    if not scheme: scheme = "https://"
    if not path: path = "/"
    if not args: args = ""
    # convert unix timestamp to "YYmmDDHHMM" format
    nexp = datetime.datetime.fromtimestamp(exp).strftime('%Y%m%d%H%M')
    sstring = key + nexp + path
    hashvalue = md5sum(sstring)
    return "%s%s/%s/%s%s%s" %(scheme, host, nexp, hashvalue, path, args)
def c_auth(uri, key, exp):
    p = re.compile("^(https://|https://)?([^/?]+)(/[^?]*)?(\?.*)?$")
    if not p:
        return None
    m = p.match(uri)
    scheme, host, path, args = m.groups()
    if not scheme: scheme = "https://"
    if not path: path = "/"
    if not args: args = ""
    hexexp = "%x" %exp
    sstring = key + path + hexexp
    hashvalue = md5sum(sstring)
    return "%s%s/%s/%s%s%s" %(scheme, host, hashvalue, hexexp, path, args)
def main():
    uri = "https://xc.cdnpe.com/ping?foo=bar"            # original uri
    key = "<input private key>"                         # private key of authorization
    exp = int(time.time()) + 1 * 3600                   # expiration time: 1 hour after current itme
    authuri = a_auth(uri, key, exp)                     # auth type: a_auth / b_auth / c_auth
    print("URL : %snAUTH: %s" %(uri, authuri))
if __name__ == "__main__":
    main()