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https://reviewboard.asterisk.org/r/3447/
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Review request for Asterisk Developers, Joshua Colp, Matt Jordan, Mark 
Michelson, and wdoekes.


Bugs: AST-1301
    https://issues.asterisk.org/jira/browse/AST-1301


Repository: Asterisk


Description
-------

Walter Doekes pointed out that this might cause a less than ideal situation in 
which people who were expecting P-Asserted-Identity not to disclose party 
information will now be sending privacy information, so I pulled this patch 
from 1.8-trunk and we will now review it here.

Without this patch, P-Asserted-Identity would always use anonymous for the 
caller ID information, and RFC-3325 seems to indicate that P-Asserted-Identity 
is something that should not be anonymized, but also only sent to trusted 
parties. The way this was presented to me, the intent here is that if you set 
callerpres to prohibited for a peer that receives P-Asserted-Identity, the 
P-Asserted-Identity shouldn't be anonymized, only the normal From/Contact 
headers would be anonymized. This apparently 

The obvious method for dealing with this mid-release change is to make the 
change into an option which defaults off in 1.8-12 while defaulting on in 
trunk. Also I'll need to add Upgrade notes for trunk since this might not 
always be a desired behavior as well as CHANGES notes throughout to indicate 
the new option if that's what we settle on.


Diffs
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  /branches/1.8/configs/sip.conf.sample 412331 
  /branches/1.8/channels/chan_sip.c 412331 

Diff: https://reviewboard.asterisk.org/r/3447/diff/


Testing
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Call from SIP peer A to SIP peer B
settings for both peers:
sendrpid = pai
callerpres = prohib


Invite sent from Asterisk to the recipient of the call
------------------------------------------------------
Prior to patch:

Audio is at 19640
Adding codec 0x4 (ulaw) to SDP
Adding non-codec 0x1 (telephone-event) to SDP
Reliably Transmitting (NAT) to 10.24.18.240:5060:
INVITE sip:123@10.24.18.240:5060 SIP/2.0
Via: SIP/2.0/UDP 10.24.18.246:5060;branch=z9hG4bK2fb42910;rport
Max-Forwards: 70
From: "Anonymous" <sip:anonymous@anonymous.invalid>;tag=as13075548
To: <sip:123@10.24.18.240:5060>
Contact: <sip:anonymous@10.24.18.246:5060>
Call-ID: 762b8a5e5848d7997f38f71a770d4dd9@10.24.18.246:5060
CSeq: 102 INVITE
User-Agent: Asterisk PBX SVN-branch-1.8-r410380
Date: Tue, 11 Mar 2014 22:59:39 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, 
PUBLISH
Supported: replaces, timer
P-Asserted-Identity: "Anonymous" <sip:anonymous@anonymous.invalid>
Content-Type: application/sdp
Content-Length: 276

v=0
o=root 473543868 473543868 IN IP4 10.24.18.246
s=Asterisk PBX SVN-branch-1.8-r410380
c=IN IP4 10.24.18.246
t=0 0
m=audio 19640 RTP/AVP 0 101
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=silenceSupp:off - - - -
a=ptime:20
a=sendrecv


After patch:

Audio is at 11822
Adding codec 0x4 (ulaw) to SDP
Adding non-codec 0x1 (telephone-event) to SDP
Reliably Transmitting (NAT) to 10.24.18.240:5060:
INVITE sip:123@10.24.18.240:5060 SIP/2.0
Via: SIP/2.0/UDP 10.24.18.246:5060;branch=z9hG4bK5d4a7db8;rport
Max-Forwards: 70
From: "Anonymous" <sip:anonymous@anonymous.invalid>;tag=as181a14e3
To: <sip:123@10.24.18.240:5060>
Contact: <sip:anonymous@10.24.18.246:5060>
Call-ID: 721bef28208f7633288e929c6e88824e@10.24.18.246:5060
CSeq: 102 INVITE
User-Agent: Asterisk PBX SVN-branch-1.8-r410380M
Date: Tue, 11 Mar 2014 22:57:39 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, 
PUBLISH
Supported: replaces, timer
P-Asserted-Identity: "Goldy Locks" <sip:6018@10.24.18.246>
Privacy: id
Content-Type: application/sdp
Content-Length: 279

v=0
o=root 1606369071 1606369071 IN IP4 10.24.18.246
s=Asterisk PBX SVN-branch-1.8-r410380M
c=IN IP4 10.24.18.246
t=0 0
m=audio 11822 RTP/AVP 0 101
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=silenceSupp:off - - - -
a=ptime:20
a=sendrecv


Thanks,

Jonathan Rose

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