Imanol-Mikel Barba Sabariego / googleddns · Commits

Commit e21a568f4ff234e003dcf0cb774f1b495689f002

Authored by Imanol-Mikel Barba Sabariego
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  1 + GNU GENERAL PUBLIC LICENSE
  2 + Version 3, 29 June 2007
  3 +
  4 + Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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  8 + Preamble
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  540 + 12. No Surrender of Others' Freedom.
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  550 +License would be to refrain entirely from conveying the Program.
  551 +
  552 + 13. Use with the GNU Affero General Public License.
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  561 +combination as such.
  562 +
  563 + 14. Revised Versions of this License.
  564 +
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  566 +the GNU General Public License from time to time. Such new versions will
  567 +be similar in spirit to the present version, but may differ in detail to
  568 +address new problems or concerns.
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  571 +Program specifies that a certain numbered version of the GNU General
  572 +Public License "or any later version" applies to it, you have the
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  575 +Foundation. If the Program does not specify a version number of the
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  580 +versions of the GNU General Public License can be used, that proxy's
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  582 +to choose that version for the Program.
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  623 + How to Apply These Terms to Your New Programs
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  625 + If you develop a new program, and you want it to be of the greatest
  626 +possible use to the public, the best way to achieve this is to make it
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  632 +the "copyright" line and a pointer to where the full notice is found.
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  635 + Copyright (C) <year> <name of author>
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  649 +
  650 +Also add information on how to contact you by electronic and paper mail.
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  652 + If the program does terminal interaction, make it output a short
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  654 +
  655 + <program> Copyright (C) <year> <name of author>
  656 + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
  657 + This is free software, and you are welcome to redistribute it
  658 + under certain conditions; type `show c' for details.
  659 +
  660 +The hypothetical commands `show w' and `show c' should show the appropriate
  661 +parts of the General Public License. Of course, your program's commands
  662 +might be different; for a GUI interface, you would use an "about box".
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  664 + You should also get your employer (if you work as a programmer) or school,
  665 +if any, to sign a "copyright disclaimer" for the program, if necessary.
  666 +For more information on this, and how to apply and follow the GNU GPL, see
  667 +<https://www.gnu.org/licenses/>.
  668 +
  669 + The GNU General Public License does not permit incorporating your program
  670 +into proprietary programs. If your program is a subroutine library, you
  671 +may consider it more useful to permit linking proprietary applications with
  672 +the library. If this is what you want to do, use the GNU Lesser General
  673 +Public License instead of this License. But first, please read
  674 +<https://www.gnu.org/licenses/why-not-lgpl.html>.
... ...
update.py 0 → 100644
  View file @e21a568
  1 +++ a/update.py
  1 +#!/usr/bin/env python3
  2 +
  3 +import http.client
  4 +import datetime
  5 +import requests
  6 +import json
  7 +import argparse
  8 +import sys
  9 +
  10 +CURRENT_VERSION = "1.0-imanolbarba"
  11 +DEBUG = 0
  12 +
  13 +API_URL="https://domains.google.com/nic/update"
  14 +
  15 +TYPE_INFO = 0
  16 +TYPE_WARNING = 1
  17 +TYPE_ERROR = 2
  18 +TYPE_DEBUG = 3
  19 +
  20 +BASH_YLW_TEXT = '\033[33m'
  21 +BASH_RED_TEXT = '\033[31m'
  22 +BASH_RESET_TEXT = '\033[0m'
  23 +
  24 +# Message logging function
  25 +# TODO: log to file
  26 +def msgLog(string,type = TYPE_INFO):
  27 + time = str(datetime.datetime.now())
  28 +
  29 + if(type == TYPE_ERROR):
  30 + print("[{}]: {}ERROR: {}{}".format(time, BASH_RED_TEXT, string, BASH_RESET_TEXT))
  31 + elif(type == TYPE_WARNING):
  32 + print("[{}]: {}WARNING: {}{}".format(time, BASH_YLW_TEXT, string, BASH_RESET_TEXT))
  33 + elif(type == TYPE_INFO):
  34 + print("[{}]: INFO: {}".format(time, string))
  35 + elif(type == TYPE_DEBUG):
  36 + if(DEBUG):
  37 + print("[{}]: DEBUG: {}".format(time, string))
  38 + else:
  39 + print(string)
  40 +
  41 +def parseResponse(body):
  42 + # format: response arg
  43 + repFields = body.split(" ")
  44 + if(len(repFields) > 2):
  45 + msgLog("Response exceeded 2 arguments. No currently implemented responses exceed that, so it must be new.\nResponse was:\n\n{}".format(body), TYPE_WARNING)
  46 + repVerb = repFields[0]
  47 + repArg = repFields[-1] # If response is only 1 argument (the verb), this will also be the verb, saving length logic ;)
  48 + if(repVerb == "good"):
  49 + msgLog("Successfully updated to {}!".format(repArg), TYPE_INFO)
  50 + return True
  51 +
  52 + if(repVerb == "nochg"):
  53 + msgLog("Record was already updated to address {}".format(repArg), TYPE_INFO)
  54 + return True
  55 +
  56 + if(repVerb == "nohost"):
  57 + msgLog("Hostname doesn't exist, or does not have Dynamic DNS enabled", TYPE_ERROR)
  58 + return False
  59 +
  60 + if(repVerb == "badauth"):
  61 + msgLog("Invalid credentials for specified host", TYPE_ERROR)
  62 + return False
  63 +
  64 + if(repVerb == "notfqdn"):
  65 + msgLog("Hostname is not a valid FQDN", TYPE_ERROR)
  66 + return False
  67 +
  68 + if(repVerb == "badagent"):
  69 + msgLog("Invalid request. Ensure the user agent is set in the request", TYPE_ERROR)
  70 + return False
  71 +
  72 + if(repVerb == "abuse"):
  73 + msgLog("Dynamic DNS access for the hostname has been blocked due to failure to interpret previous responses correctly", TYPE_ERROR)
  74 + return False
  75 +
  76 + if(repVerb == "911"):
  77 + msgLog("Google Domains failure. Try again later", TYPE_ERROR)
  78 + return False
  79 +
  80 + if(repVerb == "conflict"):
  81 + msgLog("Conflicting {} record found. Delete the indicated resource record within DNS settings page and try the update again".format(repArg), TYPE_ERROR)
  82 + return False
  83 +
  84 + msgLog("Unknown response:\n\n{}".format(body), TYPE_ERROR)
  85 + return False
  86 +
  87 +def updateRecord(username, password, hostname, address, offline):
  88 + msgLog("Updating {} to {}".format(hostname, ("current IP address" if address == None else address)),TYPE_INFO)
  89 + updateParams = {"hostname" : (None, hostname), "offline": (None, ("yes" if offline == True else "no"))}
  90 + if(address != None):
  91 + updateParams["myip"] = (None, address)
  92 + req = requests.Request('POST', API_URL, auth=(username,password), files=updateParams)
  93 + prep = req.prepare()
  94 + msgLog('Request:\n\n{} {}\n{}\n\n{}'.format(prep.method, prep.url,'\n'.join('{}: {}'.format(k, v) for k, v in prep.headers.items()),prep.body.decode()), TYPE_DEBUG)
  95 + rep = requests.Session().send(prep)
  96 + msgLog('Response:\n\n{} {}\n{}\n\n{}'.format(rep.status_code, http.client.responses[rep.status_code],'\n'.join('{}: {}'.format(k, v) for k, v in rep.headers.items()),rep.content.decode()), TYPE_DEBUG)
  97 + if(rep.status_code != 200):
  98 + msgLog("API returned non-success code: {}\n".format(rep.status_code), TYPE_ERROR)
  99 + return False
  100 + return parseResponse(rep.content.decode())
  101 +
  102 +
  103 +parser = argparse.ArgumentParser(description="Update Google Domain Dynamic DNS records")
  104 +parser.add_argument('--verbose', action='store_true', dest="verbose", help="Enable debugging messages")
  105 +parser.add_argument('--version', action='version', version=str("GoogleDDNS v" + CURRENT_VERSION))
  106 +
  107 +parser.add_argument("--hostname", action="store", dest="hostname", help="Hostname to be updated", nargs=1)
  108 +parser.add_argument("--ip", action="store", dest="ip", help="IPv4/6 address to update the hostname to (Optional for IPv4, Google uses the requestor IP address otherwise)", nargs=1)
  109 +parser.add_argument("--username", action="store", dest="username", help="Username for this specific hostname (NOT YOUR GOOGLE ACCOUNT USERNAME)", nargs=1)
  110 +parser.add_argument("--password", action="store", dest="password", help="Password for this specific hostname (NOT YOUR GOOGLE ACCOUNT PASSWORD)", nargs=1)
  111 +parser.add_argument("--offline", action="store_true", dest="offline", help="Put the hostname offline until further updates")
  112 +
  113 +argv = parser.parse_args()
  114 +if(argv.verbose):
  115 + DEBUG = 1
  116 +
  117 +if(argv.hostname != None):
  118 + if(argv.username != None):
  119 + if(argv.password != None):
  120 + if(updateRecord(argv.username[0], argv.password[0], argv.hostname[0], (argv.ip[0] if argv.ip != None else None), argv.offline) == False):
  121 + exit(1)
  122 + else:
  123 + msgLog("Password not specified", TYPE_ERROR)
  124 + else:
  125 + msgLog("Username not specified", TYPE_ERROR)
  126 +else:
  127 + msgLog("Hostname not specified", TYPE_ERROR)
  128 +
  129 +exit(0)
... ...