Identify fails for remote URL

[alex@shopnation.com]

Identify fails for remote URL. curl, wget, chrome, etc.. get the image OK.
image url:

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http://images.destinationmaternity.com/dmc?set=ImageURL[2651696cu.jpg],Imagesize[thumb]&call=url[file:sizer]&sink

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e7450-gd5tf72:Downloads alex$ identify -version
Version: ImageMagick 6.9.4-9 Q16 x86_64 2016-06-13 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2016 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Features: Cipher DPC Modules 
Delegates (built-in): bzlib freetype jng jpeg ltdl lzma png tiff xml zlib
e7450-gd5tf72:Downloads alex$ identify "http://images.destinationmaternity.com/dmc?set=ImageURL[2651696cu.jpg],Imagesize[thumb]&call=url[file:sizer]&sink"
error : Unknown IO error
identify: no decode delegate for this image format `' @ error/constitute.c/ReadImage/504.
identify: no data returned `http://images.destinationmaternity.com/dmc?set=ImageURL[2651696cu.jpg],Imagesize[thumb]&call=url[file:sizer]&sink' @ error/url.c/ReadURLImage/247.

Thanks,
Alex

[fmw42]

see viewtopic.php?f=4&t=29588

[snibgo]

It works fine for me, IM v6.9.5-3 on Windows 8.1, at the Windows command prompt:

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f:\web\im>%IM%identify "http://images.destinationmaternity.com/dmc?set=ImageURL[2651696cu.jpg],Imagesize[thumb]&call=url[file:sizer]&sink"

http://images.destinationmaternity.com/dmc?set=ImageURL[2651696cu.jpg],Imagesize[thumb]&call=url[file:sizer]&sink=>sizer]&sink JPEG 178x234 178x234+0+0 8-bit sRGB 9.54KB 0.000u 0:00.000

The same command also works from the Cygwin bash shell.

(Personally, I wouldn't use "http:" in IM commands because comms is the slowest and least reliable part of the process, and IM isn't engineered to diagnose or recover from comms problems.)

[alex@shopnation.com]

Note sure what this has to do with the security issue.
I guessed that its something with the URL characters and got this command to work (note brackets are URL encoded):

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e7450-gd5tf72:keys alex$ identify 'http://images.destinationmaternity.com/dmc?set=ImageURL%5B2651696cu.jpg%5D,Imagesize%5Bthumb%5D&call=url%5Bfile:sizer%5D&sink'
http://images.destinationmaternity.com/dmc?set=ImageURL%5B2651696cu.jpg%5D,Imagesize%5Bthumb%5D&call=url%5Bfile:sizer%5D&sink=>sizer%5D&sink JPEG 178x234 178x234+0+0 8-bit sRGB 9.54KB 0.000u 0:00.000

Why would the brackets prevent the command from working?

FYI I am on OSX 10.11.6

[snibgo]

I assume that IM passes %5B etc straight through to the comms s/w, without interpretation.

Square brackets [] have a special meaning within IM, eg x.tif[3], so IM processes them specially. The code for this may have changed between your version (6.9.4-9) and mine (6.9.5-3).

[alex@shopnation.com]

curl also has issues with this url:

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alexs-MacBook-Pro:~ alex$ curl 'http://images.destinationmaternity.com/dmc?set=ImageURL[2651696cu.jpg],Imagesize[thumb]&call=url[file:sizer]&sink' > test.jpg
curl: (3) [globbing] bad range in column 57

unless I add the -g option to disable globbing

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alexs-MacBook-Pro:~ alex$ curl -g 'http://images.destinationmaternity.com/dmc?set=ImageURL[2651696cu.jpg],Imagesize[thumb]&call=url[file:sizer]&sink' > test.jpg
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  9537  100  9537    0     0  45990      0 --:--:-- --:--:-- --:--:-- 45850

wget seems to work OK.

[alex@shopnation.com]

Is there any way to disable interpretation/globbing the file name/url with IM?
We are using the im4java library which calls IM on the command line and would prefer IM to download the files instead of rolling our own file management code and/or calling curl manually.
Also I just found out the IM is on github now. Is that a better place to post this issue?

[alex@shopnation.com]

I poked around the code here: https://github.com/ImageMagick/libxml/blob/master/uri.c
and decided to workaround this issue by manually URL encoding the following characters before passing the URL to IM:

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{}|\^[]`