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Merged revisions 248396 via svnmerge from

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https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r248396 | dvossel | 2010-02-23 10:26:05 -0600 (Tue, 23 Feb 2010) | 9 lines
  
  fixes invite with replaces deadlock
  
  (closes issue #16862)
  Reported by: pwalker
  Patches:
        replaces_deadlock_1.4 uploaded by dvossel (license 671)
  Tested by: pwalker, dvossel
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@248397 65c4cc65-6c06-0410-ace0-fbb531ad65f3
certified/1.8.6
David Vossel 16 years ago
parent 3a422d7796
commit 6568b06d29
1 changed files with 53 additions and 19 deletions
Show Stats Download Patch File Download Diff File

72
channels/chan_sip.c
Unescape View File

@ -18816,6 +18816,7 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
int gotdest;
const char *p_replaces;
char *replace_id = NULL;
int refer_locked = 0;
const char *required;
unsigned int required_profile = 0;
struct ast_channel *c = NULL; /* New channel */
@ -18856,7 +18857,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
p->invitestate = INV_COMPLETED;
if (!p->lastinvite)
sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
return -1;
res = -1;
goto request_invite_cleanup;
}
}
@ -18883,7 +18885,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
transmit_response(p, "482 Loop Detected", req);
p->invitestate = INV_COMPLETED;
sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
return 0;
res = 0;
goto request_invite_cleanup;
} else {
/*! This is a spiral. What we need to do is to just change the outgoing INVITE
* so that it now routes to the new Request URI. Since we created the INVITE ourselves
@ -18909,7 +18912,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
*/
ast_string_field_set(p->owner, call_forward, peerorhost);
ast_queue_control(p->owner, AST_CONTROL_BUSY);
return 0;
res = 0;
goto request_invite_cleanup;
}
}
@ -18947,7 +18951,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
transmit_response_reliable(p, "491 Request Pending", req);
ast_debug(1, "Got INVITE on call where we already have pending INVITE, deferring that - %s\n", p->callid);
/* Don't destroy dialog here */
return 0;
res = 0;
goto request_invite_cleanup;
}
}
@ -18964,7 +18969,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
ast_debug(3, "INVITE w Replaces on existing call? Refusing action. [%s]\n", p->callid);
transmit_response_reliable(p, "400 Bad request", req); /* The best way to not not accept the transfer */
/* Do not destroy existing call */
return -1;
res = -1;
goto request_invite_cleanup;
}
if (sipdebug)
@ -18977,7 +18983,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
append_history(p, "Xfer", "INVITE/Replace Failed. Out of memory.");
sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
p->invitestate = INV_COMPLETED;
return -1;
res = -1;
goto request_invite_cleanup;
}
/* Todo: (When we find phones that support this)
@ -19040,6 +19047,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
ast_log(LOG_NOTICE, "Supervised transfer attempted to replace non-existent call id (%s)!\n", replace_id);
transmit_response_reliable(p, "481 Call Leg Does Not Exist (Replaces)", req);
error = 1;
} else {
refer_locked = 1;
}
/* The matched call is the call from the transferer to Asterisk .
@ -19077,8 +19086,10 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
ast_channel_unlock(p->refer->refer_call->owner);
}
}
refer_locked = 0;
p->invitestate = INV_COMPLETED;
return -1;
res = -1;
goto request_invite_cleanup;
}
}
@ -19121,7 +19132,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
transmit_response_reliable(p, "488 Not acceptable here", req);
if (!p->lastinvite)
sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
return -1;
res = -1;
goto request_invite_cleanup;
}
ast_queue_control(p->owner, AST_CONTROL_SRCUPDATE);
} else {
@ -19142,7 +19154,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
res = check_user(p, req, SIP_INVITE, e, XMIT_RELIABLE, sin);
if (res == AUTH_CHALLENGE_SENT) {
p->invitestate = INV_COMPLETED; /* Needs to restart in another INVITE transaction */
return 0;
res = 0;
goto request_invite_cleanup;
}
if (res < 0) { /* Something failed in authentication */
if (res == AUTH_FAKE_AUTH) {
@ -19155,7 +19168,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
p->invitestate = INV_COMPLETED;
sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
ast_string_field_set(p, theirtag, NULL);
return 0;
res = 0;
goto request_invite_cleanup;
}
/* If T38 is needed but not present, then make it magically appear */
@ -19172,7 +19186,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
p->invitestate = INV_COMPLETED;
sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
ast_debug(1, "No compatible codecs for this SIP call.\n");
return -1;
res = -1;
goto request_invite_cleanup;
}
if (p->rtp) {
ast_rtp_instance_set_prop(p->rtp, AST_RTP_PROPERTY_CONSTANT_SSRC, ast_test_flag(&p->flags[1], SIP_PAGE2_CONSTANT_SSRC));
@ -19205,7 +19220,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
p->invitestate = INV_COMPLETED;
}
return 0;
res = 0;
goto request_invite_cleanup;
}
gotdest = get_destination(p, NULL); /* Get destination right away */
change_redirecting_information(p, req, &redirecting, FALSE); /*Will return immediately if no Diversion header is present */
@ -19232,7 +19248,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
p->invitestate = INV_COMPLETED;
update_call_counter(p, DEC_CALL_LIMIT);
sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
return 0;
res = 0;
goto request_invite_cleanup;
} else {
/* If no extension was specified, use the s one */
@ -19292,7 +19309,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
if (!p->lastinvite) {
sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
}
return -1;
res = -1;
goto request_invite_cleanup;
}
}
@ -19306,7 +19324,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
if (!p->lastinvite) {
sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
}
return -1;
res = -1;
goto request_invite_cleanup;
}
}
@ -19320,7 +19339,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
if (!p->lastinvite) {
sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
}
return -1;
res = -1;
goto request_invite_cleanup;
}
p->stimer->st_active_peer_ua = TRUE;
@ -19350,7 +19370,8 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
if (!p->lastinvite) {
sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
}
return -1;
res = -1;
goto request_invite_cleanup;
}
break;
@ -19429,12 +19450,15 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
ast_hangup(c);
sip_pvt_lock(p); /* pvt is expected to remain locked on return, so re-lock it */
return 0;
res = 0;
goto request_invite_cleanup;
} else {
/* Go and take over the target call */
if (sipdebug)
ast_debug(4, "Sending this call to the invite/replcaes handler %s\n", p->callid);
return handle_invite_replaces(p, req, debug, seqno, sin, nounlock);
res = handle_invite_replaces(p, req, debug, seqno, sin, nounlock);
refer_locked = 0;
goto request_invite_cleanup;
}
}
@ -19558,6 +19582,16 @@ static int handle_request_invite(struct sip_pvt *p, struct sip_request *req, int
sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
}
}
request_invite_cleanup:
if (refer_locked && p->refer && p->refer->refer_call) {
sip_pvt_unlock(p->refer->refer_call);
if (p->refer->refer_call->owner) {
ast_channel_unlock(p->refer->refer_call->owner);
}
}
return res;
}

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