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Dealing with spaces while scripting or in terminal is such a pain in the ass. The true dark path of horror is using spaces indeed.
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I work on a Web app and we recently decided that we’re just not gonna support double quotes in free text fields because oh holy balls what a thing it is to try to deal with those in a way that doesn’t open you up to multiple encoding vulnerabilities.
That’s… Surprising. If you’re doing things right, double quotes should be no trouble at all:
- HTTP requests have simple, automatic encoding
- SQL queries with prepared statements don’t need any special handling for double quotes
- Rendering the data should happen with proper escaping etc.
They are usually only trouble if you’re doing SQL queries wrong (concatenation etc.) or if you’re not escaping your output.
The issue is the filter that we’re using to avoid multiple encoding attacks de-escapes everything via multiple rounds, then tries to pass it to the next layer of filtering with the de-escaped request body as a json string. Your absolutely right that this is a silly way of doing it, but sometimes we have to live with decisions that were made before we were onboarded to a project. In this particular case, I pushed to improve the filters but all our PO heard was “spend development time weakening security” and at the end of the day they decide what to do and we do it.
Ah, that’s understandable. Sorry you have to go through that!
The filter you’re using to avoid multiple encoding attacks creates multiple encoding attacks.
You should tell that to OWASP then, they wrote it. org.owasp.esapi 2.5.2.0, class is Encoder, method is canonicalize(String, bool, bool)
This method is a band-aid patch when your downstream code is all messed up and you can’t fix it. Instead of treating the input string correctly, it just removes anything that might possibly trigger some vulnerability in wrong code.
It’s a way bigger pain in the ass than people think it is. I remember having to parse output from a tool for work that had tons of output in tabular format, mixed with normal sentence like strings. JSON, YAML, or XML outputs weren’t available so I had to do a nasty mess of grep, awk, cut, and head/tail, to get what I wanted. My first attempt was literally counting the characters so I could cut out exactly what I needed, but as we all know, hardcoding values is a recipe for headaches later on.
Here’s a horror story from literally yesterday. We have been fighting a system for a client for weeks and it has been a nightmare. Our clients just told us that they outsourced some of their work to an Indian outfit but that outfit is unfamiliar with Linux and doesn’t know how to edit text files so they have been downloading the files to their Windows machines, editing them in Windows, then uploading the contaminated text files back into Linux. None of them, not our client nor the outfit they hired, understood why this was a problem. We have no idea what files are affected and we won’t know until they fail because they obviously did not keep track of what they touched.
EDIT: I’m being intentionally vague.
Haha this is up there with having to explain why opening a csv in Excel and then saving means that I don’t want the file.
I will never forgive excel for automatically converting all of my dates to some weird ass format, or stripping single quotes randomly, or something other BS that they do for no reason
My absolute favourite is stripping leading zeroes from any text that looks like a number, then displaying it in scientific notation. But we get Copilot, so it balances out, right?
If this is about line endings, surely a simple shell or python script could correct them?
There’s already a command for it:
Does windows add an extra character at the end that gets converted to new line on linux? Because the other day I were copying a script and after pasting it an extra line was added after every single line, even the empty lines.
how it looked when I copied it:
bla bla blawhat it turned into:
bla bla blaWindows uses CR LF (carriage return, line feed), whereas Unix just uses LF. For added fun, macs use CR.
For added fun, macs use CR.
This used to be true, for sure, but I thought this changed with OS X (which is essentially PrettyBSD) ?
You’re right. Notepad++ still lists macs as using CR for their EOL conversion tool, so I didn’t realize.
The only reasonable response to this behavior is disproportionate violence
You can just grep for carriage returns followed by newlines,
grep -Pirn '\r\n$' /path/to/whatever. It’ll identify all your problematic files.
“\ “ and [tab] and * are your friends. I’ve been using spaces in Unix filesystems since the early 90s with no issues. Also, using terminal fonts that•put•a•faint•dot•in•each•space•character helps.
Yeah, either put quotes around it ‘/like this/you can incorporate/spaces/into your paths’ or /just\ escape/your\ spaces/like\ this
This is fine for the most basic of use cases but once you start looping through file names or what have you, you have to start writing robust correct bash and nobody does that
It gets real crazy when you’re sending remote commands so you have to escape the escapes so that the remote keeps them and properly escapes the space
ssh -t remote "mv /home/me/folder\\\ with \\\ spaces /home/me/downloads/Yup, this is me with
scp. Well, it would be if I didn’t just use asterisks to avoid that PITA.Does SSH require quoting commands?
It doesn’t for commands without spaces (i.e
reboot) You might be able to escape the spaces and not use quotes, I’m not sureMight be client-dependent; I’ve regularly ran commands with spaces (e.g.
ssh a@a.local ssh b@b.local) without a problem.
Yeah but at least with periods in the title tab complete will just complete the file name all the way while with a filename with spaces I have to escape the damn space with "\ " like you said. Why do more work when I don’t have to?
My shell seems to autocomplete filenames that have spaces with "\ " already.
Yeah I was gonna say this is something anyone in tech knows, spaces are a plague
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Standards and CONSEQUENCES
I prefer dots over spaces.
Spaces can mess with stuff, double space…
I.too.prefer.dots.over.spaces.
:%s/./ /g
And get the bonus of excellent compression after that, too!
I prefer
Dots sometimes pose problems in arrs.
Yeah I had dots on my arse once. Turned out I’d been sitting on my keyboard
why not use underscores?
I’ve always liked underscores better because it differentiates from the file extension. It just makes sense. Except it is a wider character, so it’d be longer.
Gotta hit shift though. Period, ezpz.
chuckles nervously in azerty hell
wow azerty needs shift to enter a period?
well if you’re using a mono font (terminal) then there are no such thing as wider characters anyway, so for me that’s not a drawback either
They are ugly. Just use -
kebab-case-for-the-win
What happens when a hyphen is used in a movie title? I think that’s frequent enough, versus an underscore or a period.
Semi colons wouldn’t be valid in file names so they’re ignored so there’s no reason to include hyphens either
Underscores require you to use the Shift key.
Do you type with one hand?
And well even if you did you could hold down right shift instead of left shift to only use a single hand.
When you have RSI you want to minimize every single key press.
Either are fine, I just wish there was a more consistent standard like naming ROMs. I want to be able to script renaming everything for Kodi
I think your workflow is not optimal. Are you using software like Radarr and Sonarr? They do the renaming for you and come with Kodi integration. Or is this not feasible?
In my experience, files are named pretty well these days to include resolution, source, the actual title and release year, video format, audio format, language, and release group.
Try looking at the way music files are named and you’ll see how awful naming conventions can get.
Using spaces is so inconsiderate.
It’s quite strange, I’ve been downloading torrents for more years than I can count, and I upload them from time to time, and I’ve always had the worry myself of how to name torrents: with dots? underscores? dashes? (although with spaces is definitely not an option).
I’ve even asked the questions on several forums and upload sites, read tutorials on these same sites etc and every time I’ve asked the answer has been: THERE IS NO STANDARD, even on the tutorials, I’ve never seen anything mentioned such a thing.
All this to say that I’m making a meme, and after so many years, this is the first time I’ve heard of a Warez scene, and several times in the same comments!, curious, isn’t it? I wish I’d heard about it before.
You should know that in most filesystems that are not NTFS, spaces in file names are not well supported.
Can you give examples? Linux and Mac have no real issues as far as I’m aware. Nor exFAT or FAT32
The problem is really that space is an argument separator, so to safely handle filenames with spaces you need to handle them special, either by escaping them, quoting the entire thing. This means that the filename with spaces can’t be just copy pasted wherever you want, you have handle them special. It adds complications that are resolved by just using a separator that isnt used for other things, like underscore, or dash. Dot I also don’t like as much as it’s used as a separator for extensions, but that’s a far easier problem to handle by just ignoring all but the last dot, leaving only one really bad edge case (a file that does not have an extension, that uses dot separator in its filename having the filesystem imply a wrong extension.
That’s a problem with the shell though, not the filesystem. It doesn’t matter which files filesystem you’re using; most interactive shells use spaces as token separators and therefore spaces in filenames need to be enclosed in quotes or escaped.
I’m with the person you’re replying to, what’s an example? I haven’t had a problem working with filenames with spaces in at least ten years on windows, Linux or Mac…
Have you ever written a program or simply used a terminal?
Escape characters and autocomplete exist.
It’s also really good practice to account for weird characters in programs and shell scripts you write because then you don’t have injection vulnerabilities or unicode problems.
Seriously, what’s an example of spaces in filenames causing a problem?
for f in *.txt; do cat $f; doneWill error for example. It works fine for filenames without space, but if the filename has space in it, it will be interpreted wrong. But if your testing batch doesn’t have spaces in the filename, you won’t see the issue until it’s used on a file that does. Note ‘cat’ is a placeholder, any function/script that can be used on a file here will have the same issue.
Something similar to that caught me last week while I was unzipping multiple mods in bulk for a game.
Clearly the best option then is to just use some of each. Like this: “MovieTitle-2000.Your_mom h.265”
Scene has standards. You don’t have to be scene to use scene naming standards. https://scenerules.org
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This.is.a.meme.
This.is.a.meme.exe
Should be a hyphen instead of period before NAHOM.
Name [Year] (1080p265)
This is how I sort my movies at leastMine is: [Year] Name [Languages][Resolution]
[Year] Name
For me. I don’t care about resolution after I’ve downloaded it. Heck, I don’t need to know the resolution before downloading, I can tell by the file size.
I usually add tvdb id for Series so that fixing identification problems in jellyfin is easier.
As soon as the file finishes downloading it becomes only the name of the movie.filetype
I can’t stand the titles on torrents.
“Titles”? It’s not a title, it’s a file name that contains a lot of details about the rip. In the post’s example it tells you that it’s the movie Split, ripped from blu ray, in 1080p, with audio tracks in Italian and English, and encoded in x265. You probably would hate a lot more not being able to tell the difference between split.mp4 recorded on my cellphone in the movie theater and split.mp4 in ultra hd 4k ripped straight from Netflix.
Lol, okay. Calm down buddy. What I do doesn’t affect you. The torrent description let’s me know all that too, I just hate having those file names in my library, looks messy and it’s less easy for my eyes to browse quickly.
I mean I never told you not to rename them lmfao. You just said “I can’t stand the titles on torrents” like people just made these really long filenames for shits and giggles. Also lots of torrent sites will feature several different kinds of rips. It’s not very convenient on the back end to have all rips of the same movie have the same file name.
Also “calm down”? Idk I thought I gave a pretty chill explanation of why things are the way they are but sorry if it didn’t come across that way.
These days, it feels like one needs a disclaimer for every opinion or fact just to avoid setting someone off. I feel like it discourages open conversation…
fuck your open conversation /s
i just let radarr do it for me nowadays
It’s supposed to be a dash before the group name.
When searching, dots, when downloading, who cares?
When searching, dots act as and, spaces as or (at least in qtorrent). The dots makes searching easier.
What do all the commas do?
Just name them in scene format even if you’re not scene.
