From: Aditya Mahajan <adityam@umich.edu>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Downloading long urls
Date: Sun, 16 Jan 2011 00:12:52 -0500 (EST) [thread overview]
Message-ID: <alpine.LNX.2.01.1101160003420.4635@ybpnyubfg.ybpnyqbznva> (raw)
Hi,
While downloading urls, context santizes the filename but does not check
the length of the url. So, one can end up with a situation where the
filename is too long for the operating system to handle. For example, the
following fails on 32bit linux.
\enabletrackers[resolvers.schemes]
\startluacode
local report_webfilter = logs.new("thirddata.webfilter")
local url =
"http://www.bing.com/search?q=AreallyreallylongstringjusttoseehowthingsworkordontworkAreallyreallylongstringjusttoseehowthingsworkordontworkAreallyreallylongstringjusttoseehowthingsworkordontworkAreallyreallylongstringjusttoseehowthingsworkordontworAreallyreallylongstringjusttoseehowthingsworkordontworkkAreallyreallylongstringjusttoseehowthingsworkordontwork"
local specification = resolvers.splitmethod(url)
local file = resolvers.finders['http'](specification) or ""
if file and file ~= "" then
report_webfilter("saving file %s", file)
else
report_webfilter("download failed")
end
\stopluacode
\normalend
Is there a robust way to avoid this problem? One possibility is that in
data-sch.lua instead of
local cleanname = gsub(original,"[^%a%d%.]+","-")
use
local cleanname = md5sum(original)
What do you think?
Aditya
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next reply other threads:[~2011-01-16 5:12 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-16 5:12 Aditya Mahajan [this message]
2011-01-21 17:15 ` Aditya Mahajan
2011-01-21 22:53 ` Hans Hagen
2011-01-22 0:20 ` Aditya Mahajan
2011-01-23 20:22 ` Hans Hagen
2011-01-23 20:34 ` Aditya Mahajan
2011-01-23 20:54 ` Hans Hagen
2011-01-23 21:10 ` Aditya Mahajan
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