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-   -   Could you allow attachments of documents and spreadsheets? (https://www.mersenneforum.org/showthread.php?t=27027)

kriesel 2021-07-28 05:09

5 Attachment(s)
.ods ->.csv -> .ods
Font formatting: gone (bold, italic, underlined, color)
Border formats: gone
Color backgrounds: gone
Conditional formatting: gone
Column widths: gone
Cell merges: gone
Charts: gone
Multiple sheets: no, choose one at a time.

If people are already complaining about a few clicks to zoom pdfs, and they are, there's no way they'll tolerate the extra effort of importing and deciphering what it takes to re-create effective formatting.

a1call 2021-07-28 05:23

[QUOTE=chalsall;584137]

PDFs can contain code that can in some cases be considered an attack vector.

Are we there yet?[/QUOTE]

Yes, and they can be launched without enabling-JavaScript/"Trust"-ing-"this"-document, which is probably why Adobe has discontinued Flash. But as you said it is a balancing act. Still, it seems unwise to enable extensions which are disabled by default in forum software.

LaurV 2021-07-28 06:39

I still don't get it what the complain is, as long as the zip files are allowed. Make a zip of what you (general you) want to attach, and that's it. Then the safety part, as well as responsibility of scanning, etc., will fall on the downloader, not on the forum.

paulunderwood 2021-07-28 06:54

[QUOTE=LaurV;584174]I still don't get it what the complain is, as long as the zip files are allowed. Make a zip of what you (general you) want to attach, and that's it. Then the safety part, as well as responsibility of scanning, etc., will fall on the downloader, not on the forum.[/QUOTE]

I disagree. Restricting attack vectors should be enforced. Sure, one can upload virus.exe.zip but the mods can keep an eye on such zips. Macros hidden in spreadsheets, word processor documents and presentations taxes policing.

LaurV 2021-07-28 08:50

We mainly say the same thing, nothing to disagree about (unless I understand your post wrong, or you mine). As somebody here would say, we are in violent agreement. People requested more extensions to be allowed, and my question was "why?". What can't you attach, as long as zip was already permitted? Why should we lower the security by allowing docs and excel files, etc?

drkirkby 2021-07-28 09:18

[QUOTE=kriesel;584133]Initial reason I asked about larger attachments is ...[/QUOTE]I just unzipped your uploader.zip, which is 2020344 bytes in length, converted to a tar file, then used lmza compression on that. The length of the compressed file was 168867 bytes, so 83.6% of the zipped version. Attempts to reduce the size further with more aggressive optimisation on lzma did not improve upon the defaults.[CODE]drkirkby@canary:~/tmp$ ls -lrt
total 7996
-rw-rw-r-- 1 drkirkby drkirkby 530552 Apr 21 2020 libssl-1_1-x64.dll
-rw-rw-r-- 1 drkirkby drkirkby 2785400 Apr 21 2020 libcrypto-1_1-x64.dll
-rw-rw-r-- 1 drkirkby drkirkby 1102968 Apr 29 2020 libcurl-x64.dll
-rw-rw-r-- 1 drkirkby drkirkby 43520 Jul 25 2020 uploader.exe
-rw-rw-r-- 1 drkirkby drkirkby 1688675 Jul 28 09:31 uploader.tar.lzma
-rw-rw-r-- 1 drkirkby drkirkby 2020344 Jul 28 09:42 uploader.zip
drkirkby@canary:~/tmp$ echo 1688675/2020344 | bc -l
.83583538248931865068[/CODE]

xilman 2021-07-28 10:12

[QUOTE=kriesel;584163].ods ->.csv -> .ods
Font formatting: gone (bold, italic, underlined, color)
Border formats: gone
Color backgrounds: gone
Conditional formatting: gone
Column widths: gone
Cell merges: gone
Charts: gone
Multiple sheets: no, choose one at a time.

If people are already complaining about a few clicks to zoom pdfs, and they are, there's no way they'll tolerate the extra effort of importing and deciphering what it takes to re-create effective formatting.[/QUOTE]So you are a form over function man. Doesn't matter what it does as long as it looks pretty.

Just give me the data. If I want it to look pretty I will beautify it myself.

As for the complainants I have absolutely no sympathy for them. If they find that intolerable they weren't very interested in the information anyway.

chalsall 2021-07-28 16:08

[QUOTE=xilman;584142]Please give it a try...[/QUOTE]

Hmmm... Cute hack.

But, at least for LibraOffice Calc under Fedora 34, I had to go to each cell and delete the equals sign and then insert it again before it became a calculated cell. Simply clicking on a cell, then clicking in the editing field and hitting enter didn't work.

kriesel 2021-07-28 16:12

[QUOTE=xilman;584188]So you are a form over function man. Doesn't matter what it does as long as it looks pretty.
[/QUOTE]No. Formatting promotes readability. It is the responsibility of a poster to communicate effectively. That is function.

Oh, and
header fields: gone (not just the formatting, the content too)
footer fields: gone (not just the formatting, the content too)
In some of my spreadsheets, background or font color encode/represent status or class of the exponent in the cell; formatting IS content there too.
(example: one color text means unassigned, another means in TF, another in P-1, another in primality test)


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