[asterisk-commits] tilghman: trunk r97125 - in /trunk: ./ channels/chan_sip.c main/asterisk.c
SVN commits to the Asterisk project
asterisk-commits at lists.digium.com
Tue Jan 8 13:06:27 CST 2008
Author: tilghman
Date: Tue Jan 8 13:06:27 2008
New Revision: 97125
URL: http://svn.digium.com/view/asterisk?view=rev&rev=97125
Log:
Merged revisions 97077 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4
........
r97077 | tilghman | 2008-01-08 12:02:13 -0600 (Tue, 08 Jan 2008) | 3 lines
Apply multiple crash fixes, found in issue #11386, but not completely
closing that issue.
........
Modified:
trunk/ (props changed)
trunk/channels/chan_sip.c
trunk/main/asterisk.c
Propchange: trunk/
------------------------------------------------------------------------------
Binary property 'branch-1.4-merged' - no diff available.
Modified: trunk/channels/chan_sip.c
URL: http://svn.digium.com/view/asterisk/trunk/channels/chan_sip.c?view=diff&rev=97125&r1=97124&r2=97125
==============================================================================
--- trunk/channels/chan_sip.c (original)
+++ trunk/channels/chan_sip.c Tue Jan 8 13:06:27 2008
@@ -136,6 +136,7 @@
#include "asterisk/translate.h"
#include "asterisk/version.h"
#include "asterisk/event.h"
+#include "asterisk/astobj2.h"
#ifndef FALSE
#define FALSE 0
@@ -1157,7 +1158,7 @@
struct ast_rtp *rtp; /*!< RTP Session */
struct ast_rtp *vrtp; /*!< Video RTP session */
struct ast_rtp *trtp; /*!< Text RTP session */
- struct sip_pkt *packets; /*!< Packets scheduled for re-transmission */
+ struct ao2_container *packets; /*!< Packets scheduled for re-transmission */
struct sip_history_head *history; /*!< History of this SIP dialog */
size_t history_entries; /*!< Number of entires in the history */
struct ast_variable *chanvars; /*!< Channel variables to set for inbound call */
@@ -1224,7 +1225,6 @@
* require retransmissions.
*/
struct sip_pkt {
- struct sip_pkt *next; /*!< Next packet in linked list */
int retrans; /*!< Retransmission number */
int method; /*!< SIP method for this packet */
int seqno; /*!< Sequence number */
@@ -2293,12 +2293,15 @@
/*! \brief Retransmit SIP message if no answer (Called from scheduler) */
static int retrans_pkt(const void *data)
{
- struct sip_pkt *pkt = (struct sip_pkt *)data, *prev, *cur = NULL;
+ struct sip_pkt *pkt = (struct sip_pkt *)data, *prev;
int reschedule = DEFAULT_RETRANS;
int xmitres = 0;
+ ao2_ref(pkt, 1); /* Make sure this cannot go away while we're using it */
+
/* Lock channel PVT */
- sip_pvt_lock(pkt->owner);
+ if (pkt->owner)
+ sip_pvt_lock(pkt->owner);
if (pkt->retrans < MAX_RETRANS) {
pkt->retrans++;
@@ -2325,7 +2328,7 @@
ast_debug(4, "** SIP timers: Rescheduling retransmission %d to %d ms (t1 %d ms (Retrans id #%d)) \n", pkt->retrans +1, siptimer_a, pkt->timer_t1, pkt->retransid);
}
- if (sip_debug_test_pvt(pkt->owner)) {
+ if (pkt->owner && sip_debug_test_pvt(pkt->owner)) {
const struct sockaddr_in *dst = sip_real_dst(pkt->owner);
ast_verbose("Retransmitting #%d (%s) to %s:%d:\n%s\n---\n",
pkt->retrans, sip_nat_mode(pkt->owner),
@@ -2335,11 +2338,14 @@
append_history(pkt->owner, "ReTx", "%d %s", reschedule, pkt->data);
xmitres = __sip_xmit(pkt->owner, pkt->data, pkt->packetlen);
- sip_pvt_unlock(pkt->owner);
+ if (pkt->owner)
+ sip_pvt_unlock(pkt->owner);
if (xmitres == XMIT_ERROR)
- ast_log(LOG_WARNING, "Network error on retransmit in dialog %s\n", pkt->owner->callid);
- else
+ ast_log(LOG_WARNING, "Network error on retransmit in dialog %s\n", pkt->owner ? pkt->owner->callid : "<unknown>");
+ else {
+ ao2_ref(pkt, -1);
return reschedule;
+ }
}
/* Too many retries */
if (pkt->owner && pkt->method != SIP_OPTIONS && xmitres == 0) {
@@ -2347,29 +2353,31 @@
ast_log(LOG_WARNING, "Maximum retries exceeded on transmission %s for seqno %d (%s %s)\n",
pkt->owner->callid, pkt->seqno,
pkt->is_fatal ? "Critical" : "Non-critical", pkt->is_resp ? "Response" : "Request");
- } else if (pkt->method == SIP_OPTIONS && sipdebug) {
- ast_log(LOG_WARNING, "Cancelling retransmit of OPTIONs (call id %s) \n", pkt->owner->callid);
+ } else if (pkt->owner && (pkt->method == SIP_OPTIONS) && sipdebug) {
+ ast_log(LOG_WARNING, "Cancelling retransmit of OPTIONs (call id %s) \n", pkt->owner->callid);
}
- if (xmitres == XMIT_ERROR) {
- ast_log(LOG_WARNING, "Transmit error :: Cancelling transmission on Call ID %s\n", pkt->owner->callid);
- append_history(pkt->owner, "XmitErr", "%s", pkt->is_fatal ? "(Critical)" : "(Non-critical)");
- } else
- append_history(pkt->owner, "MaxRetries", "%s", pkt->is_fatal ? "(Critical)" : "(Non-critical)");
-
+ if (pkt->owner) {
+ if (xmitres == XMIT_ERROR) {
+ ast_log(LOG_WARNING, "Transmit error :: Cancelling transmission of transaction in call id %s \n", pkt->owner->callid);
+ append_history(pkt->owner, "XmitErr", "%s", pkt->is_fatal ? "(Critical)" : "(Non-critical)");
+ } else
+ append_history(pkt->owner, "MaxRetries", "%s", pkt->is_fatal ? "(Critical)" : "(Non-critical)");
+ }
pkt->retransid = -1;
if (pkt->is_fatal) {
- while(pkt->owner->owner && ast_channel_trylock(pkt->owner->owner)) {
+ while (pkt->owner && pkt->owner->owner && ast_channel_trylock(pkt->owner->owner)) {
sip_pvt_unlock(pkt->owner); /* SIP_PVT, not channel */
usleep(1);
- sip_pvt_lock(pkt->owner);
- }
-
- if (pkt->owner->owner && !pkt->owner->owner->hangupcause)
+ if (pkt->owner)
+ sip_pvt_lock(pkt->owner);
+ }
+
+ if (pkt->owner && pkt->owner->owner && !pkt->owner->owner->hangupcause)
pkt->owner->owner->hangupcause = AST_CAUSE_NO_USER_RESPONSE;
- if (pkt->owner->owner) {
+ if (pkt->owner && pkt->owner->owner) {
sip_alreadygone(pkt->owner);
ast_log(LOG_WARNING, "Hanging up call %s - no reply to our critical packet.\n", pkt->owner->callid);
ast_queue_hangup(pkt->owner->owner);
@@ -2378,7 +2386,7 @@
/* If no channel owner, destroy now */
/* Let the peerpoke system expire packets when the timer expires for poke_noanswer */
- if (pkt->method != SIP_OPTIONS && pkt->method != SIP_REGISTER) {
+ if (pkt->owner && pkt->method != SIP_OPTIONS && pkt->method != SIP_REGISTER) {
pkt->owner->needdestroy = 1;
sip_alreadygone(pkt->owner);
append_history(pkt->owner, "DialogKill", "Killing this failed dialog immediately");
@@ -2386,7 +2394,7 @@
}
}
- if (pkt->method == SIP_BYE) {
+ if (pkt->owner && pkt->method == SIP_BYE) {
/* We're not getting answers on SIP BYE's. Tear down the call anyway. */
if (pkt->owner->owner)
ast_channel_unlock(pkt->owner->owner);
@@ -2395,18 +2403,23 @@
}
/* Remove the packet */
- for (prev = NULL, cur = pkt->owner->packets; cur; prev = cur, cur = cur->next) {
- if (cur == pkt) {
- UNLINK(cur, pkt->owner->packets, prev);
+ if (pkt->owner && (prev = ao2_find(pkt->owner->packets, pkt, OBJ_UNLINK | OBJ_POINTER))) {
+ /* Destroy the container's reference (inherited) */
+ ao2_ref(prev, -1);
+ sip_pvt_unlock(pkt->owner);
+ /* Now destroy our initial reference */
+ ao2_ref(pkt, -1);
+ /* And destroy the sched ref */
+ ao2_ref(pkt, -1);
+ return 0;
+ } else {
+ ast_log(LOG_WARNING, "Weird, couldn't find packet owner!\n");
+ if (pkt->owner)
sip_pvt_unlock(pkt->owner);
- ast_free(pkt);
- return 0;
- }
- }
- /* error case */
- ast_log(LOG_WARNING, "Weird, couldn't find packet owner!\n");
- sip_pvt_unlock(pkt->owner);
- return 0;
+ ao2_ref(pkt, -1); /* Initial ref */
+ ao2_ref(pkt, -1); /* Sched ref */
+ return 0;
+ }
}
/*! \brief Transmit packet with retransmits
@@ -2418,7 +2431,7 @@
int siptimer_a = DEFAULT_RETRANS;
int xmitres = 0;
- if (!(pkt = ast_calloc(1, sizeof(*pkt) + len + 1)))
+ if (!(pkt = ao2_alloc(sizeof(*pkt) + len + 1, ast_free)))
return AST_FAILURE;
/* copy data, add a terminator and save length */
memcpy(pkt->data, data, len);
@@ -2430,17 +2443,13 @@
pkt->is_resp = resp;
pkt->is_fatal = fatal;
pkt->owner = dialog_ref(p);
- pkt->next = p->packets;
- p->packets = pkt;
pkt->timer_t1 = p->timer_t1; /* Set SIP timer T1 */
if (pkt->timer_t1)
siptimer_a = pkt->timer_t1 * 2;
- /* Schedule retransmission */
- pkt->retransid = ast_sched_replace_variable(pkt->retransid, sched,
- siptimer_a, retrans_pkt, pkt, 1);
- if (sipdebug)
- ast_debug(4, "*** SIP TIMER: Initializing retransmit timer on packet: Id #%d\n", pkt->retransid);
+ if (option_debug > 3 && sipdebug)
+ ast_log(LOG_DEBUG, "*** SIP TIMER: Initializing retransmit timer on packet: Id #%d\n", pkt->retransid);
+
if (sipmethod == SIP_INVITE) {
/* Note this is a pending invite */
p->pendinginvite = seqno;
@@ -2450,11 +2459,25 @@
if (xmitres == XMIT_ERROR) { /* Serious network trouble, no need to try again */
append_history(pkt->owner, "XmitErr", "%s", pkt->is_fatal ? "(Critical)" : "(Non-critical)");
- ast_sched_del(sched, pkt->retransid); /* No more retransmission */
pkt->retransid = -1;
+ ao2_ref(pkt, -1); /* and deallocate */
return AST_FAILURE;
- } else
+ } else {
+ /* Add refcount for scheduler pointer */
+ ao2_ref(pkt, 1);
+ /* Schedule retransmission */
+ pkt->retransid = ast_sched_add_variable(sched, siptimer_a, retrans_pkt, pkt, 1);
+ /* Link into the list of packets */
+ ao2_link(p->packets, pkt);
return AST_SUCCESS;
+ }
+}
+
+static int __deref_ao2_owner_cb(void *obj, void *unused, int flags)
+{
+ struct sip_pkt *pkt = obj;
+ pkt->owner = NULL;
+ return 0;
}
/*! \brief Kill a SIP dialog (called only by the scheduler)
@@ -2475,11 +2498,11 @@
return 10000; /* Reschedule this destruction so that we know that it's gone */
}
- /* If there are packets still waiting for delivery, delay the destruction */
- if (p->packets) {
- ast_debug(3, "Re-scheduled destruction of SIP call %s\n", p->callid ? p->callid : "<unknown>");
- append_history(p, "ReliableXmit", "timeout");
- return 10000;
+ /* If there are packets still waiting for delivery, make sure they can't callback to us anymore. */
+ if (ao2_container_count(p->packets)) {
+ sip_pvt_lock(p);
+ ao2_callback(p->packets, 0, __deref_ao2_owner_cb, NULL);
+ sip_pvt_unlock(p);
}
if (p->subscribed == MWI_NOTIFICATION)
@@ -2543,7 +2566,8 @@
/*! \brief Acknowledges receipt of a packet and stops retransmission */
static void __sip_ack(struct sip_pvt *p, int seqno, int resp, int sipmethod)
{
- struct sip_pkt *cur, *prev = NULL;
+ struct sip_pkt *cur;
+ struct ao2_iterator ao2i;
const char *msg = "Not Found"; /* used only for debugging */
sip_pvt_lock(p);
@@ -2556,7 +2580,8 @@
if (p->outboundproxy && !p->outboundproxy->force)
p->outboundproxy = NULL;
- for (cur = p->packets; cur; prev = cur, cur = cur->next) {
+ ao2i = ao2_iterator_init(p->packets, 0);
+ while ((cur = ao2_iterator_next(&ao2i))) {
if (cur->seqno != seqno || cur->is_resp != resp)
continue;
if (cur->is_resp || cur->method == sipmethod) {
@@ -2568,57 +2593,65 @@
if (cur->retransid > -1) {
if (sipdebug)
ast_debug(4, "** SIP TIMER: Cancelling retransmit of packet (reply received) Retransid #%d\n", cur->retransid);
- ast_sched_del(sched, cur->retransid);
+ if (!ast_sched_del(sched, cur->retransid))
+ ao2_ref(cur, -1); /* scheduler deref */
cur->retransid = -1;
}
- UNLINK(cur, p->packets, prev);
- dialog_unref(cur->owner);
- ast_free(cur);
+
+ /* Remove it from the list */
+ ao2_unlink(p->packets, cur);
+ ao2_ref(cur, -1); /* iterator deref */
break;
}
+
+ ao2_ref(cur, -1); /* iterator deref */
}
sip_pvt_unlock(p);
ast_debug(1, "Stopping retransmission on '%s' of %s %d: Match %s\n",
p->callid, resp ? "Response" : "Request", seqno, msg);
}
-/*! \brief Pretend to ack all packets
- * maybe the lock on p is not strictly necessary but there might be a race */
+static int __sip_pretend_ack_cb(void *obj, void *vp, int flags)
+{
+ struct sip_pvt *p = vp;
+ struct sip_pkt *pkt = obj;
+ __sip_ack(p, pkt->seqno, pkt->is_resp, pkt->method ? pkt->method : find_sip_method(pkt->data));
+ return 0;
+}
+
+/*! \brief Pretend to ack all packets */
static void __sip_pretend_ack(struct sip_pvt *p)
{
- struct sip_pkt *cur = NULL;
-
- while (p->packets) {
- int method;
- if (cur == p->packets) {
- ast_log(LOG_WARNING, "Have a packet that doesn't want to give up! %s\n", sip_methods[cur->method].text);
- return;
- }
- cur = p->packets;
- method = (cur->method) ? cur->method : find_sip_method(cur->data);
- __sip_ack(p, cur->seqno, cur->is_resp, method);
- }
+ ao2_callback(p->packets, 0, __sip_pretend_ack_cb, p);
}
/*! \brief Acks receipt of packet, keep it around (used for provisional responses) */
static int __sip_semi_ack(struct sip_pvt *p, int seqno, int resp, int sipmethod)
{
- struct sip_pkt *cur;
+ struct sip_pkt *cur, *found;
int res = -1;
-
- for (cur = p->packets; cur; cur = cur->next) {
+ struct ao2_iterator ao2i;
+
+ ao2i = ao2_iterator_init(p->packets, 0);
+ while ((cur = ao2_iterator_next(&ao2i))) {
if (cur->seqno == seqno && cur->is_resp == resp &&
(cur->is_resp || method_match(sipmethod, cur->data))) {
/* this is our baby */
if (cur->retransid > -1) {
if (sipdebug)
ast_debug(4, "*** SIP TIMER: Cancelling retransmission #%d - %s (got response)\n", cur->retransid, sip_methods[sipmethod].text);
- ast_sched_del(sched, cur->retransid);
+ if (!ast_sched_del(sched, cur->retransid))
+ ao2_ref(cur, -1); /* scheduler deref */
cur->retransid = -1;
}
res = 0;
+ /* Now remove it from the packet list. */
+ if ((found = ao2_find(p->packets, cur, OBJ_UNLINK | OBJ_POINTER)))
+ ao2_ref(found, -1); /* container item deref */
+ ao2_ref(cur, -1); /* iterator deref */
break;
}
+ ao2_ref(cur, -1); /* iterator deref */
}
ast_debug(1, "(Provisional) Stopping retransmission (but retaining packet) on '%s' %s %d: %s\n", p->callid, resp ? "Response" : "Request", seqno, res ? "Not Found" : "Found");
return res;
@@ -3716,11 +3749,21 @@
}
+static int __sip_destroy_packet_cb(void *obj, void *unused, int flags)
+{
+ struct sip_pkt *pkt = obj;
+ if (pkt->retransid > -1) {
+ if (!ast_sched_del(sched, pkt->retransid))
+ ao2_ref(pkt, -1); /* scheduler deref */
+ }
+ pkt->owner = NULL;
+ return 0;
+}
+
/*! \brief Execute destruction of SIP dialog structure, release memory */
static void __sip_destroy(struct sip_pvt *p, int lockowner, int lockdialoglist)
{
struct sip_pvt *cur, *prev = NULL;
- struct sip_pkt *cp;
if (sip_debug_test_pvt(p))
ast_verbose("Really destroying SIP dialog '%s' Method: %s\n", p->callid, sip_methods[p->method].text);
@@ -3806,13 +3849,8 @@
}
/* remove all current packets in this dialog */
- while((cp = p->packets)) {
- p->packets = p->packets->next;
- if (cp->retransid > -1)
- ast_sched_del(sched, cp->retransid);
- dialog_unref(cp->owner);
- ast_free(cp);
- }
+ ao2_callback(p->packets, 0, __sip_destroy_packet_cb, NULL);
+
if (p->chanvars) {
ast_variables_destroy(p->chanvars);
p->chanvars = NULL;
@@ -5092,6 +5130,22 @@
snprintf(tagbuf, len, "as%08lx", ast_random());
}
+static int packet_hash_fn(const void *obj, const int flags)
+{
+ const struct sip_pkt *pkt = obj;
+ return pkt->seqno;
+}
+
+static int packet_cmp_fn(void *obj1, void *obj2, int flags)
+{
+ struct sip_pkt *p1 = obj1, *p2 = obj2;
+
+ if (flags & OBJ_POINTER)
+ return p1 == p2 ? CMP_MATCH : 0;
+ else
+ return p1->seqno == p2->seqno ? CMP_MATCH : 0;
+}
+
/*! \brief Allocate sip_pvt structure, set defaults and link in the container.
* Returns a reference to the object so whoever uses it later must
* remember to release the reference.
@@ -5100,11 +5154,18 @@
int useglobal_nat, const int intended_method)
{
struct sip_pvt *p;
-
- if (!(p = ast_calloc(1, sizeof(*p))))
+ struct ao2_container *aoc;
+
+ if (!(aoc = ao2_container_alloc(37, packet_hash_fn, packet_cmp_fn)))
return NULL;
+ if (!(p = ast_calloc(1, sizeof(*p)))) {
+ ao2_ref(aoc, -1);
+ return NULL;
+ }
+
if (ast_string_field_init(p, 512)) {
+ ao2_ref(aoc, -1);
ast_free(p);
return NULL;
}
@@ -5118,6 +5179,7 @@
p->subscribed = NONE;
p->stateid = -1;
p->prefs = default_prefs; /* Set default codecs for this call */
+ p->packets = aoc;
if (intended_method != SIP_OPTIONS) { /* Peerpoke has it's own system */
p->timer_t1 = global_t1; /* Default SIP retransmission timer T1 (RFC 3261) */
@@ -17075,7 +17137,8 @@
/* If we have sessions that needs to be destroyed, do it now */
/* Check if we have outstanding requests not responsed to or an active call
- if that's the case, wait with destruction */
- if (dialog->needdestroy && !dialog->packets && !dialog->owner) {
+ if (dialog->needdestroy && !ao2_container_count(dialog->packets) &&
+ !dialog->owner) {
sip_pvt_unlock(dialog);
__sip_destroy(dialog, TRUE, FALSE);
goto restartsearch;
Modified: trunk/main/asterisk.c
URL: http://svn.digium.com/view/asterisk/trunk/main/asterisk.c?view=diff&rev=97125&r1=97124&r2=97125
==============================================================================
--- trunk/main/asterisk.c (original)
+++ trunk/main/asterisk.c Tue Jan 8 13:06:27 2008
@@ -2788,7 +2788,7 @@
break;
case 'x':
ast_set_flag(&ast_options, AST_OPT_FLAG_EXEC);
- xarg = optarg;
+ xarg = ast_strdupa(optarg);
break;
case 'C':
ast_copy_string(cfg_paths.config_file, optarg, sizeof(cfg_paths.config_file));
@@ -2810,10 +2810,10 @@
show_version();
exit(0);
case 'U':
- runuser = optarg;
+ runuser = ast_strdupa(optarg);
break;
case 'G':
- rungroup = optarg;
+ rungroup = ast_strdupa(optarg);
break;
case 's':
remotesock = optarg;
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