[asterisk-bugs] [JIRA] (ASTERISK-22961) [patch] DTLS-SRTP not working with SHA-256

[Juan Ramirez (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-22961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=219658#comment-219658 ] 

Juan Ramirez commented on ASTERISK-22961:
-----------------------------------------

@Yuriy

@Agustí found out that there was a problem with uuid, passing {{-with-uuid}} to {{configure}} seemed to work for him, but not for  me when compiling in debian squeeze.

I finally hacked into the Makefile and commented out the line causing of the error:

{{vi res/Makefile +92}}

You'll see the following code:

{noformat}
 ifeq ($(subst 1:0,1,$(UUID)), 1)
   res_rtp_asterisk.o: $(PJ_LIB_FILES)
   res_rtp_asterisk.o: _ASTCFLAGS+=-DUSE_PJPROJECT
   res_rtp_asterisk.o: _ASTCFLAGS+=$(PJ_CFLAGS)
   res_rtp_asterisk.so: _ASTLDFLAGS+=$(PJ_LDFLAGS)
   res_rtp_asterisk.so: LIBS+=$(PJ_LDLIBS)
 endif
{noformat}

Just remove or comment out the if:

{noformat}
 #ifeq ($(subst 1:0,1,$(UUID)), 1)
   res_rtp_asterisk.o: $(PJ_LIB_FILES)
   res_rtp_asterisk.o: _ASTCFLAGS+=-DUSE_PJPROJECT
   res_rtp_asterisk.o: _ASTCFLAGS+=$(PJ_CFLAGS)
   res_rtp_asterisk.so: _ASTLDFLAGS+=$(PJ_LDFLAGS)
   res_rtp_asterisk.so: LIBS+=$(PJ_LDLIBS)
 #endif
{noformat}

Note: Compilation fails because the code is not correctly guarded by the macro {{USE_PJPROJECT}}, this is wrong, but I preffer it that way because is the only way (for now) to ensure whether WebRTC is available or not.


> [patch] DTLS-SRTP not working with SHA-256
> ------------------------------------------
>
>                 Key: ASTERISK-22961
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-22961
>             Project: Asterisk
>          Issue Type: Improvement
>      Security Level: None
>          Components: Channels/chan_sip/SRTP, Channels/chan_sip/WebSocket
>    Affects Versions: 11.6.0, 11.7.0, 11.9.0, 12.0.0-beta2
>            Reporter: Jay Jideliov
>            Assignee: Joshua Colp
>         Attachments: 11.7 patched.zip, asterisk-11.10.0-dtls.patch, asterisk-11.9.0-dtls.diff, asterisk_dtls.patch, backtrace (1).txt, backtrace.txt, chan_sip.c, dtls_retransmission.patch, ice_session.c, jssip no ring.txt, Patch 11.9.zip, res_rtp_asterisk.c, res_rtp_asterisk.c, srtp_dtls.patch, srtp_dtls.patch, srtp_dtls.patch, wireshark.txt
>
>
> Recently it became possible to use websocket on asterisk without a proxy previously necessary to make calls from the web browser. Although partial support has been added, full browser cross-operability has not been achieved yet. However, it seems to be a relatively easy task.
> Tested on Chrome+SIPML5+Asterisk 11, the connection can be established and works fine. However, due to the fact that Firefox sends SHA-256 packets which are not supported by asterisk, hence the support for this browser is limited by this issue.
> Step 1: Adding certificates to support DTLS
> dtlsenable = yes
> dtlsverify = no
> dtlscertfile=/etc/asterisk/keys/softphone.pem
> dtlsprivatekey=/etc/asterisk/keys/key.pem
> dtlscafile=/etc/asterisk/keys/key.pem
> Step 2: Making a call
> [Nov 25 15:05:50] WARNING[5628][C-0000005c]: chan_sip.c:11034 process_sdp_a_dtls: Unsupported fingerprint hash type 'sha-2' received on dialog '38f43a1f-15cd-ad69-c2b3-72c21b9de5fd'



--
This message was sent by Atlassian JIRA
(v6.2#6252)