https://bugs.kde.org/show_bug.cgi?id=374442
Bug ID: 374442
Summary: Exporting images with line breaks in their captions to
flickr fails
Product: kipiplugins
Version: 5.3.0
Platform: Other
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: Flickr
Assignee: kde-imag...@kde.org
Reporter: rich...@audacityteam.org
Target Milestone: ---
I can export images from Digikam 5.3.0 to flickr without issue if they have no
caption (used for the Flickr description field), or if they have a caption
which consists of a single line of text.
However if I have a line break in the caption (typed by pressing enter in the
caption field) then the upload always fails with the "Invalid signature" error
code from Flickr.
Also reproduced with a build of 5.4.0 from git.
I did some debugging and testing:
* Digikam presents the caption to the plugin as a plain text QString with the
line break represented by a line feed character (0xOA).
* Flickr's API documentation for the description just says "A description of
the photo. May contain some limited HTML." with no detail on what the limits
are. https://www.flickr.com/services/api/upload.api.html
I tried a few different things to see if I could hit on a solution:
* If the newline character is stripped out, then the upload succeeds (so
nothing else is wrong).
* If the newline is replaced by a CRLF pair, then the same error occurs
* If the newline is replaced by a CR (only) then the same error occurs
* If the newline is replaced by the HTML <br> tag then the upload succeeds
(signature must be OK), but the <br> tag is removed, resulting in a one-line
caption with the words either side of the break run together.
My suspicion (but I can't prove it) is that the description text is getting
altered before the server-side signature check, which means it doesn't pass -
but without knowing what to, we can't get the right signature!
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