[asterisk-bugs] [Asterisk 0011245]: Asterisk unable to handle Multple Authorization Headers

[noreply at bugs.digium.com]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=11245 
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Reported By:                MrTelephone
Assigned To:                
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Project:                    Asterisk
Issue ID:                   11245
Category:                   Channels/chan_sip/Registration
Reproducibility:            sometimes
Severity:                   tweak
Priority:                   normal
Status:                     new
Asterisk Version:            1.2.24  
SVN Branch (only for SVN checkouts, not tarball releases): N/A  
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             11-14-2007 12:11 CST
Last Modified:              11-30-2007 11:56 CST
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Summary:                    Asterisk unable to handle Multple Authorization
Headers
Description: 
U 10.1.3.65:5060 -> 69.71.79.175:5060
REGISTER sip:sip.picriverisp.net SIP/2.0.
From:
2293699<sip:2293699 at sip.picriverisp.net>;tag=94af8fe8-a010341-13c4-45026-35-10986656-35.
To: 2293699<sip:2293699 at sip.picriverisp.net>.
Call-ID: 94af2570-a010341-13c4-45026-35-309b2630-35.
CSeq: 8626 REGISTER.
Via: SIP/2.0/UDP 10.1.3.65:5060;branch=z9hG4bK-4ea53-13335721-7b40596a.
Max-Forwards: 70.
Supported: timer,replaces,join,100rel.
User-Agent: ARRIS-TM502G release v.05.02.0X SN/0015A37D20F6.
Contact: 2293699<sip:2293699 at 10.1.3.65:5060>.
Authorization: Digest
username="2293699",realm="sip.picriverisp.net",nonce="6c3d3a9c",uri="sip:sip.picriverisp.net",response
Authorization: Digest
username="2293699",realm="sip.picriverisp.net",nonce="38305d6d",uri="sip:sip.picriverisp.net",response
Authorization: Digest
username="2293699",realm="sip.picriverisp.net",nonce="284031de",uri="sip:sip.picriverisp.net",response
Authorization: Digest
username="2293699",realm="sip.picriverisp.net",nonce="7333cfa5",uri="sip:sip.picriverisp.net",response
Authorization: Digest
username="2293699",realm="sip.picriverisp.net",nonce="776ccacf",uri="sip:sip.picriverisp.net",response
Allow: INVITE,ACK,BYE,CANCEL,NOTIFY,PRACK,UPDATE,OPTIONS.
Content-Length: 0.
.

Arris sip endpoints under "unknown" conditions append Authorization
Headers during a register request when a new nonce is received from
asterisk. The newest Auth Header is added to the bottom. Other brand
endpoints work fine.

A workable fix could be to use the last Authorization header instead of
the first. 
====================================================================== 

---------------------------------------------------------------------- 
 MrTelephone - 11-30-07 11:56  
---------------------------------------------------------------------- 
Small sub routine to mark the start integer. In this case start/x = the
last line that starts with Authorization. Roughly line 3000 in
channels/chan_sip.c

        int tmplen = 13;
        int x;
        char tmpchar[13] = "Authorization";

        /*Find Last Authorization Line*/

        if (!strncasecmp(tmpchar,name,tmplen)) {
                for (x=*start; x<req->headers; x++) {
                        if (!strncasecmp(req->header[x], name, tmplen)) {
                        *start=x;
                        }
                }
        /*      ast_verbose("Checking Multiple Authorization Lines,
Starting At Header#: %u\n", x); */
        } 

Issue History 
Date Modified   Username       Field                    Change               
====================================================================== 
11-30-07 11:56  MrTelephone    Note Added: 0074608                          
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