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Merged revisions 303549 via svnmerge from

Browse Source 
https://origsvn.digium.com/svn/asterisk/branches/1.8

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  r303549 | russell | 2011-01-24 14:51:37 -0600 (Mon, 24 Jan 2011) | 45 lines
  
  Merged revisions 303548 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.6.2
  
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    r303548 | russell | 2011-01-24 14:49:53 -0600 (Mon, 24 Jan 2011) | 38 lines
    
    Merged revisions 303546 via svnmerge from 
    https://origsvn.digium.com/svn/asterisk/branches/1.4
    
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      r303546 | russell | 2011-01-24 14:32:21 -0600 (Mon, 24 Jan 2011) | 31 lines
      
      Fix channel redirect out of MeetMe() and other issues with channel softhangup.
      
      Mantis issue #18585 reports that a channel redirect out of MeetMe() stopped
      working properly.  This issue includes a patch that resolves the issue by
      removing a call to ast_check_hangup() from app_meetme.c.  I left that in my
      patch, as it doesn't need to be there.  However, the rest of the patch fixes
      this problem with or without the change to app_meetme.
      
      The key difference between what happens before and after this patch is the
      effect of the END_OF_Q control frame.  After END_OF_Q is hit in ast_read(),
      ast_read() will return NULL.  With the ast_check_hangup() removed, app_meetme
      sees this which causes it to exit as intended.  Checking ast_check_hangup()
      caused app_meetme to exit earlier in the process, and the target of the
      redirect saw the condition where ast_read() returned NULL.
      
      Removing ast_check_hangup() works around the issue in app_meetme, but doesn't
      solve the issue if another application did the same thing.  There are also
      other edge cases where if an application finishes at the same time that a
      redirect happens, the target of the redirect will think that the channel hung
      up.  So, I made some changes in pbx.c to resolve it at a deeper level.  There
      are already places that unset the SOFTHANGUP_ASYNCGOTO flag in an attempt to
      abort the hangup process.  My patch extends this to remove the END_OF_Q frame
      from the channel's read queue, making the "abort hangup" more complete.  This
      same technique was used in every place where a softhangup flag was cleared.
      
      (closes issue #18585)
      Reported by: oej
      Tested by: oej, wedhorn, russell
      
      Review: https://reviewboard.asterisk.org/r/1082/
    ........
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@303551 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Russell Bryant
2011-01-24 20:57:28 +00:00
parent b6bb13b498
commit 092134399c
5 changed files with 60 additions and 17 deletions
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14
main/pbx.c
View File

@@ -4764,7 +4764,7 @@ static int collect_digits(struct ast_channel *c, int waittime, char *buf, int bu
keep reading digits until we can't possibly get a right answer anymore. */
digit = ast_waitfordigit(c, waittime);
if (c->_softhangup & AST_SOFTHANGUP_ASYNCGOTO) {
c->_softhangup &= ~AST_SOFTHANGUP_ASYNCGOTO;
ast_channel_clear_softhangup(c, AST_SOFTHANGUP_ASYNCGOTO);
} else {
if (!digit) /* No entry */
break;
@@ -4841,16 +4841,16 @@ static enum ast_pbx_result __ast_pbx_run(struct ast_channel *c,
set_ext_pri(c, "T", 0); /* 0 will become 1 with the c->priority++; at the end */
/* If the AbsoluteTimeout is not reset to 0, we'll get an infinite loop */
memset(&c->whentohangup, 0, sizeof(c->whentohangup));
c->_softhangup &= ~AST_SOFTHANGUP_TIMEOUT;
ast_channel_clear_softhangup(c, AST_SOFTHANGUP_TIMEOUT);
} else if ((c->_softhangup & AST_SOFTHANGUP_TIMEOUT)
&& ast_exists_extension(c, c->context, "e", 1,
S_COR(c->caller.id.number.valid, c->caller.id.number.str, NULL))) {
pbx_builtin_raise_exception(c, "ABSOLUTETIMEOUT");
/* If the AbsoluteTimeout is not reset to 0, we'll get an infinite loop */
memset(&c->whentohangup, 0, sizeof(c->whentohangup));
c->_softhangup &= ~AST_SOFTHANGUP_TIMEOUT;
ast_channel_clear_softhangup(c, AST_SOFTHANGUP_TIMEOUT);
} else if (c->_softhangup & AST_SOFTHANGUP_ASYNCGOTO) {
c->_softhangup &= ~AST_SOFTHANGUP_ASYNCGOTO;
ast_channel_clear_softhangup(c, AST_SOFTHANGUP_ASYNCGOTO);
continue;
} else if (ast_check_hangup(c)) {
ast_debug(1, "Extension %s, priority %d returned normally even though call was hung up\n",
@@ -4898,7 +4898,7 @@ static enum ast_pbx_result __ast_pbx_run(struct ast_channel *c,
}
if (c->_softhangup & AST_SOFTHANGUP_ASYNCGOTO) {
c->_softhangup &= ~AST_SOFTHANGUP_ASYNCGOTO;
ast_channel_clear_softhangup(c, AST_SOFTHANGUP_ASYNCGOTO);
continue;
} else if ((c->_softhangup & AST_SOFTHANGUP_TIMEOUT)
&& ast_exists_extension(c, c->context, "T", 1,
@@ -4906,7 +4906,7 @@ static enum ast_pbx_result __ast_pbx_run(struct ast_channel *c,
set_ext_pri(c, "T", 1);
/* If the AbsoluteTimeout is not reset to 0, we'll get an infinite loop */
memset(&c->whentohangup, 0, sizeof(c->whentohangup));
c->_softhangup &= ~AST_SOFTHANGUP_TIMEOUT;
ast_channel_clear_softhangup(c, AST_SOFTHANGUP_TIMEOUT);
continue;
} else {
if (c->cdr)
@@ -4948,7 +4948,7 @@ static enum ast_pbx_result __ast_pbx_run(struct ast_channel *c,
}
} else if (c->_softhangup & AST_SOFTHANGUP_TIMEOUT) {
/* If we get this far with AST_SOFTHANGUP_TIMEOUT, then we know that the "T" extension is next. */
c->_softhangup &= ~AST_SOFTHANGUP_TIMEOUT;
ast_channel_clear_softhangup(c, AST_SOFTHANGUP_TIMEOUT);
} else { /* keypress received, get more digits for a full extension */
int waittime = 0;
if (digit)