[OpenSIPS-Devel] Configuration issue with modparam syntax

[Dan Pascu]

On 8 Jul 2019, at 20:18, Dan Pascu wrote:

> 
> On 8 Jul 2019, at 14:36, Bogdan-Andrei Iancu wrote:
> 
>> HI Dan,
>> 
>> Thanks for the report, but could you please open a bug report on the tracker - is is the easiest way for use to track and work with all the reports in a centralized way.
> 
> It turns out the dash in the file name is not the problem. I noticed this after I changed the name of my certificates and the new ones had a dash in the name, so I thought that the cause was some problem with the configuration parser. When I removed the dash from the name the error went away so that strengthened the idea that it must be related to the dash.
> 
> What I noticed later made things much weirder, to the point that this bug now looks like something out of the twilight zone. To be honest I'm not even sure how to describe it properly.
> 
> In short I have the following facts:
> 
> 1. I have a configuration file of length N that has the error. The error is something about some items in $acc_extra not being defined when used in route later in the script. With this is doesn't matter if the certificate has a dash or not in its name. All it matter is the size of the configuration file being N.
> 2. If I add or remove 1 character in such a way that it doesn't create a new line in the file, for example by adding one extra character in a comment line, the error disappears. This character added/removed must come before the acc_extra modparam definition for this to work.
> 3. Now to make things really weird, consider that the configuration file name is length M and in the error case filename length and file content length is N + M = T. If I keep this T constant, I have the problem. So if I add a character in a comment in the configuration as described above and the problem disappears, because now total length is T+1, the problem reappears if I shorten the configuration file name by 1 character so I have total length and equal with the original T : (N+1) + (M-1) = T.

Just a side note in case it's not clear from this description. The dash in the certificate names is not an issue. I have right now a configuration that has certificates defined with dashes in the name and it works just fine. It's only that now it has a different size than the original size that triggered the error.
Also the size that triggers the error is not just some fixed number.I tried to create the simplest configuration file possible to reproduce the issue, where I loaded and defined the minimal number of things and filled the rest of it with dummy comment lines to get to size N, but I couldn't trigger the issue. The size that gives the error seems to be correlated with the rest of the content of the file.

--
Dan