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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/2406/">https://reviewboard.asterisk.org/r/2406/</a>
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<div>Review request for Asterisk Developers and Joshua Colp.</div>
<div>By Mark Michelson.</div>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This adds support for outbound authentication. "Outbound authentication" here means sending requests with authentication credentials based on a challenge received in a 401 or 407 SIP response.
There are two main considerations here: in-dialog requests and out-of-dialog requests.
For in-dialog requests, one uses ast_sip_dialog_setup_outbound_auth() in order to prepare a dialog for performing outbound authentication. This registers a module as a dialog usage so that when an inbound response is received, the module can intercept the response. A callback can be provided when setting up in-dialog outbound authentication if there is any further housekeeping that needs to be done based on the application in use.
For out-of-dialog requests, the outbound authentication logic is taken care of for you by the ast_sip_send_request() function. It registers a callback that will take care of sending an authentication request if the situation arises.
Both make use of a pluggable framework similar to what is used for inbound authentication. Currently the only outbound authenticator written is one that uses digest authentication.
There are some decidedly non-outbound-auth-related changes in this diff; however, they were done so that I could properly test outbound auth. The ast_sip_send_request() method has been split into two functions: one to create a request and one to send a request. This diff actually fills in these functions to be more than just stubs. In doing this, I found code that I needed embedded in other functions, so I pulled out that logic into their own smaller functions so that code did not have to be repeated. sip_options.c has a CLI command that allows for sending an OPTIONS request to an arbitrary endpoint. This was done so that I could test out-of-dialog outbound authentication. While I could remove the CLI command, it seems like a useful thing to have. In addition, chan_sip has a "sip qualify peer" CLI command, so having something similar to work off of is a good thing.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Tested by using SIPp to challenge INVITE requests and OPTIONS requests. In both cases, I tested with and without an outbound authenticator registered. In both cases, behavior was as expected.</pre>
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<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://issues.asterisk.org/jira/browse/ASTERISK-21199">ASTERISK-21199</a>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/team/group/pimp_my_sip/include/asterisk/res_sip.h <span style="color: grey">(383399)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip.c <span style="color: grey">(383399)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip.exports.in <span style="color: grey">(383399)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip/include/res_sip_private.h <span style="color: grey">(383399)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip/location.c <span style="color: grey">(383399)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip/sip_configuration.c <span style="color: grey">(383399)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip/sip_distributor.c <span style="color: grey">(383399)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip/sip_options.c <span style="color: grey">(383399)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip/sip_outbound_auth.c <span style="color: grey">(PRE-CREATION)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip_authenticator_digest.c <span style="color: grey">(383399)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip_outbound_authenticator_digest.c <span style="color: grey">(PRE-CREATION)</span></li>
<li>/team/group/pimp_my_sip/res/res_sip_session.c <span style="color: grey">(383399)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/2406/diff/" style="margin-left: 3em;">View Diff</a></p>
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