[asterisk-bugs] [JIRA] (ASTERISK-21141) RPID not parsed correctly if display-name is *(token LWS)

[Rusty Newton (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-21141?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rusty Newton updated ASTERISK-21141:
------------------------------------

    Status: Open  (was: Triage)
    
> RPID not parsed correctly if display-name is *(token LWS)
> ---------------------------------------------------------
>
>                 Key: ASTERISK-21141
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21141
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_sip/Interoperability
>    Affects Versions: 1.8.20.1
>            Reporter: Walter Doekes
>            Severity: Trivial
>         Attachments: issueA21141_rpid_parse_token_name_too.patch
>
>
> Quick ABNF refresher:
> {noformat}
> [http://tools.ietf.org/id/draft-ietf-sip-privacy-04.txt]
> Remote-Party-ID    = "Remote-Party-ID" HCOLON rpid *(COMMA rpid)
> rpid               =  [display-name] LAQUOT addr-spec RAQUOT *(SEMI rpi-token)
> [http://www.ietf.org/rfc/rfc3261.txt]
> display-name     =  *(token LWS)/ quoted-string
> LWS              = ((( mandatory space "linear whitepace" )))
> token            =  1*(alphanum / "-" / "." / "!" / "%" / "*"
>                                 / "_" / "+" / "`" / "'" / "~" )
> // name-addr     =  [ display-name ] LAQUOT addr-spec RAQUOT
> // addr-spec     =  SIP-URI / SIPS-URI / absoluteURI
> // quoted-string =  SWS DQUOTE *(qdtext / quoted-pair ) DQUOTE
> // SWS           = ((( optional space "separator whitespace" )))
> {noformat}
> {{chan_sip.c get_rpid()}} only parses the {{quoted-string}} form, not the {{*(token LWS)}} form.
> I've done a quick fix to allow {{*(token LWS)}} (and allowing a name without trailing LWS too).
> It's would probably be better to rewrite the thing and use proper {{reqresp_parser.c}} functions, but chan_gulp is on the way and I didn't want to unintentionally break things for somebody by changing around too much.
> Regards,
> Walter

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