Re: [OpenSER-Users] Unable to do transformation on expires param if display name present

I am currently using 1.3.2 but this problem exists in older versions as well. My config script includes a transformation on the expires parameter in a Contact header. I have found that a Linksys SPA3000 will include the display name in the Contact header and that there is white space between the display name and the URI. The function parse_param_name in parse_param.c will stop parsing when it encounters the white space. As a workaround I commented the line in parse_param_name that checks for white space. This works for me but I do not know if there are side effects. This form of Contact is not common but it appears to be legal according to RFC 3261. 20.10 Contact A Contact header field value provides a URI whose meaning depends on the type of request or response it is in. A Contact header field value can contain a display name, a URI with URI parameters, and header parameters. This document defines the Contact parameters "q" and "expires". These parameters are only used when the Contact is present in a REGISTER request or response, or in a 3xx response. Additional parameters may be defined in other specifications. When the header field value contains a display name, the URI including all URI parameters is enclosed in "<" and ">". If no "<" and ">" are present, all parameters after the URI are header parameters, not URI parameters. The display name can be tokens, or a quoted string, if a larger character set is desired. Even if the "display-name" is empty, the "name-addr" form MUST be used if the "addr-spec" contains a comma, semicolon, or question mark. There may or may not be LWS between the display-name and the "<". Here is an excerpt from my script -- if ((is_present_hf("Expires") && $(hdr(Expires) {s.int}) == 0)\ ||($(ct{param.value,expires}) == '0')) { log(1, "looks like deregistration\n"); I added some debug messages to illustrate the problem -- May 19 22:16:32 [14447] DBG:core:parse_param_name: string passed to parse_param_name is RJD <sip:17476316719@192.168.1.4:5061>;expires=3600 May 19 22:16:32 [14447] DBG:core:parse_param_name: next char is R May 19 22:16:32 [14447] DBG:core:parse_param_name: next char is J May 19 22:16:32 [14447] DBG:core:parse_param_name: next char is D May 19 22:16:32 [14447] DBG:core:parse_param_name: next char is May 19 22:16:32 [14447] ERROR:core:parse_params: invalid character, ; expected May 19 22:16:32 [14447] DBG:core:run_transformations: return val is -1 May 19 22:16:32 [14447] CRITICAL:core:comp_scriptvar: cannot get left var value May 19 22:16:32 [14447] WARNING:core:do_action: error in expression _______________________________________________ Users mailing list Users(a)lists.openser.org http://lists.openser.org/cgi-bin/mailman/listinfo/users