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IrcMiRCARTBot.py:IrcMiRCARTBot.{ContentTooLargeException,_urlretrieveReportHook()}: restrict ASCII downloads to 1 MB in size.

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IrcMiRCARTBot.py:IrcMiRCARTBot._dispatchPrivmsg(): pass (static) _urlretrieveReportHook() to urllib.request.urlretrieve().
IrcMiRCARTBot.py:IrcMiRCARTBot._dispatchPrivmsg(): handle ContentTooLargeException, urllib.error.URLError, and ValueError exceptions.
IrcMiRCARTBot.py:IrcMiRCARTBot._dispatchPrivmsg(): only reset clientLastMessage after successful completion.
This commit is contained in:
Lucio Andrés Illanes Albornoz 2018-01-03 15:37:26 +01:00
parent b71ca6af89
commit 49705ad4bc
1 changed files with 23 additions and 2 deletions
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25
IrcMiRCARTBot.py
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@ -33,6 +33,10 @@ class IrcMiRCARTBot(IrcClient.IrcClient):
clientChannelLastMessage = clientChannelOps = clientChannel = None
clientChannelRejoin = None
# {{{ ContentTooLargeException: Raised by _urlretrieveReportHook() given download size > 1 MB
class ContentTooLargeException(Exception):
pass
# }}}
# {{{ _dispatch001(): Dispatch single 001 (RPL_WELCOME)
def _dispatch001(self, message):
self._log("Registered on {}:{} as {}, {}, {}.".format(self.serverHname, self.serverPort, self.clientNick, self.clientIdent, self.clientGecos))
@ -110,7 +114,6 @@ class IrcMiRCARTBot(IrcClient.IrcClient):
return
else:
self._log("Processing request on {} from {}: {}".format(message[2].lower(), message[0], message[3]))
self.clientLastMessage = int(time.time())
asciiUrl = message[3].split(" ")[1]
asciiTmpFilePath = "tmp.txt"; imgTmpFilePath = "tmp.png";
if os.path.isfile(asciiTmpFilePath):
@ -118,16 +121,29 @@ class IrcMiRCARTBot(IrcClient.IrcClient):
if os.path.isfile(imgTmpFilePath):
os.remove(imgTmpFilePath)
try:
urllib.request.urlretrieve(asciiUrl, asciiTmpFilePath)
urllib.request.urlretrieve(asciiUrl, asciiTmpFilePath, IrcMiRCARTBot._urlretrieveReportHook)
except IrcMiRCARTBot.ContentTooLargeException:
self._log("Download size exceeds quota of 1 MB!")
self.queue("PRIVMSG", message[2], "4/!\\ Download size exceeds quota of 1 MB!")
return
except urllib.error.HTTPError as err:
self._log("Download failed with HTTP status code {}".format(err.code))
self.queue("PRIVMSG", message[2], "4/!\\ Download failed with HTTP status code {}!".format(err.code))
return
except urllib.error.URLError as err:
self._log("Invalid URL specified!")
self.queue("PRIVMSG", message[2], "4/!\\ Invalid URL specified!")
return
except ValueError as err:
self._log("Unknown URL type specified!")
self.queue("PRIVMSG", message[2], "4/!\\ Unknown URL type specified!")
return
_MiRCART = MiRCART.MiRCART(asciiTmpFilePath, imgTmpFilePath, "DejaVuSansMono.ttf", 11)
imgurResponse = self._uploadToImgur(imgTmpFilePath, "MiRCART image", "MiRCART image", "c9a6efb3d7932fd")
if imgurResponse[0] == 200:
self._log("Uploaded as: {}".format(imgurResponse[1]))
self.queue("PRIVMSG", message[2], "8/!\\ Uploaded as: {}".format(imgurResponse[1]))
self.clientLastMessage = int(time.time())
else:
self._log("Upload failed with HTTP status code {}".format(imgurResponse[0]))
self.queue("PRIVMSG", message[2], "4/!\\ Upload failed with HTTP status code {}!".format(imgurResponse[0]))
@ -165,6 +181,11 @@ class IrcMiRCARTBot(IrcClient.IrcClient):
else:
return [responseHttp.status_code]
# }}}
# {{{ _urlretrieveReportHook(): Limit downloads to 1 MB
def _urlretrieveReportHook(count, blockSize, totalSize):
if (totalSize > pow(2,10)):
raise IrcMiRCARTBot.ContentTooLargeException
# }}}
# {{{ connect(): Connect to server and (re)initialise w/ optional timeout
def connect(self, timeout=None):
self._log("Connecting to {}:{}...".format(self.serverHname, self.serverPort))