Fix improper usage of scheduler exposed by 5c713fdf18f

When 5c713fdf18f was merged, it allowed for scheduled items to have an ID of
'0' returned. While this was valid per the documentation for the API, it was
apparently never returned previously. As a result, several users of the
scheduler API viewed the result as being invalid, causing them to reschedule
already scheduled items or otherwise fail in interesting ways.

This patch corrects the users such that they view '0' as valid, and a returned
ID of -1 as being invalid.

Note that the failing HEP RTCP tests now pass with this patch. These tests
failed due to a duplicate scheduling of the RTCP transmissions.

ASTERISK-25449 #close

Change-Id: I019a9aa8b6997584f66876331675981ac9e07e39

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 89fe3f0c1373217fa75cf9a00bb5190d661922eb..384e843033f7ab8c1cba6995001435a63e496820 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -4318,7 +4318,7 @@ void sip_scheddestroy(struct sip_pvt *p, int ms)
        }
        p->autokillid = ast_sched_add(sched, ms, __sip_autodestruct, dialog_ref(p, "setting ref as passing into ast_sched_add for __sip_autodestruct"));
 
-       if (p->stimer && p->stimer->st_active == TRUE && p->stimer->st_schedid > 0) {
+       if (p->stimer && p->stimer->st_active == TRUE && p->stimer->st_schedid > -1) {
                stop_session_timer(p);
        }
 }
@@ -22739,7 +22739,7 @@ static void check_pendings(struct sip_pvt *p)
                sip_scheddestroy(p, DEFAULT_TRANS_TIMEOUT);
        } else if (ast_test_flag(&p->flags[0], SIP_NEEDREINVITE)) {
                /* if we can't REINVITE, hold it for later */
-               if (p->pendinginvite || p->invitestate == INV_CALLING || p->invitestate == INV_PROCEEDING || p->invitestate == INV_EARLY_MEDIA || p->waitid > 0) {
+               if (p->pendinginvite || p->invitestate == INV_CALLING || p->invitestate == INV_PROCEEDING || p->invitestate == INV_EARLY_MEDIA || p->waitid > -1) {
                        ast_debug(2, "NOT Sending pending reinvite (yet) on '%s'\n", p->callid);
                } else {
                        ast_debug(2, "Sending pending reinvite on '%s'\n", p->callid);

diff --git a/channels/chan_skinny.c b/channels/chan_skinny.c
index 3d2d2e8d1fb11a785c5a7ae4fb33255ce298a553..23a48356ff2e35dd6efb9169fbea4979b4394d81 100644 (file)
--- a/channels/chan_skinny.c
+++ b/channels/chan_skinny.c
@@ -4863,7 +4863,7 @@ static int skinny_dialer_cb(const void *data)
 {
        struct skinny_subchannel *sub = (struct skinny_subchannel *)data;
        SKINNY_DEBUG(DEBUG_SUB, 3, "Sub %u - Dialer called from SCHED %d\n", sub->callid, sub->dialer_sched);
-       sub->dialer_sched = 0;
+       sub->dialer_sched = -1;
        skinny_dialer(sub, 1);
        return 0;
 }
@@ -4872,7 +4872,7 @@ static int skinny_autoanswer_cb(const void *data)
 {
        struct skinny_subchannel *sub = (struct skinny_subchannel *)data;
        skinny_locksub(sub);
-       sub->aa_sched = 0;
+       sub->aa_sched = -1;
        setsubstate(sub, SKINNY_CONNECTED);
        skinny_unlocksub(sub);
        return 0;
@@ -4882,7 +4882,7 @@ static int skinny_cfwd_cb(const void *data)
 {
        struct skinny_subchannel *sub = (struct skinny_subchannel *)data;
        struct skinny_line *l = sub->line;
-       sub->cfwd_sched = 0;
+       sub->cfwd_sched = -1;
        SKINNY_DEBUG(DEBUG_SUB, 3, "Sub %u - CFWDNOANS to %s.\n", sub->callid, l->call_forward_noanswer);
        ast_channel_call_forward_set(sub->owner, l->call_forward_noanswer);
        ast_queue_control(sub->owner, AST_CONTROL_REDIRECTING);
@@ -4924,7 +4924,7 @@ static int skinny_call(struct ast_channel *ast, const char *dest, int timeout)
        skinny_locksub(sub);
        AST_LIST_TRAVERSE(ast_channel_varshead(ast), current, entries) {
                if (!(strcmp(ast_var_name(current), "SKINNY_AUTOANSWER"))) {
-                       if (d->hookstate == SKINNY_ONHOOK && !sub->aa_sched) {
+                       if (d->hookstate == SKINNY_ONHOOK && sub->aa_sched < 0) {
                                char buf[24];
                                int aatime;
                                char *stringp = buf, *curstr;
@@ -5389,9 +5389,9 @@ static struct ast_channel *skinny_new(struct skinny_line *l, struct skinny_subli
                        sub->xferor = 0;
                        sub->related = NULL;
                        sub->calldirection = direction;
-                       sub->aa_sched = 0;
-                       sub->dialer_sched = 0;
-                       sub->cfwd_sched = 0;
+                       sub->aa_sched = -1;
+                       sub->dialer_sched = -1;
+                       sub->cfwd_sched = -1;
                        sub->dialType = DIALTYPE_NORMAL;
                        sub->getforward = 0;
 
@@ -5550,17 +5550,17 @@ static void setsubstate(struct skinny_subchannel *sub, int state)
 
        if (sub->dialer_sched) {
                skinny_sched_del(sub->dialer_sched, sub);
-               sub->dialer_sched = 0;
+               sub->dialer_sched = -1;
        }
 
        if (state != SUBSTATE_RINGIN && sub->aa_sched) {
                skinny_sched_del(sub->aa_sched, sub);
-               sub->aa_sched = 0;
+               sub->aa_sched = -1;
                sub->aa_beep = 0;
                sub->aa_mute = 0;
        }
 
-       if (sub->cfwd_sched) {
+       if (sub->cfwd_sched > -1) {
                if (state == SUBSTATE_CONNECTED) {
                        if (skinny_sched_del(sub->cfwd_sched, sub)) {
                                SKINNY_DEBUG(DEBUG_SUB, 3, "Sub %u - trying to change state from %s to %s, but already forwarded because no answer.\n",
@@ -5568,7 +5568,7 @@ static void setsubstate(struct skinny_subchannel *sub, int state)
                                skinny_unlocksub(sub);
                                return;
                        }
-                       sub->cfwd_sched = 0;
+                       sub->cfwd_sched = -1;
                } else if (state == SUBSTATE_ONHOOK) {
                        skinny_sched_del(sub->cfwd_sched, sub);
                }
@@ -6240,7 +6240,7 @@ static int handle_keypad_button_message(struct skinny_req *req, struct skinnyses
        if ((sub->owner && ast_channel_state(sub->owner) <  AST_STATE_UP)) {
                if (sub->dialer_sched && !skinny_sched_del(sub->dialer_sched, sub)) {
                        SKINNY_DEBUG(DEBUG_SUB, 3, "Sub %u - Got a digit and not timed out, so try dialing\n", sub->callid);
-                       sub->dialer_sched = 0;
+                       sub->dialer_sched = -1;
                        len = strlen(sub->exten);
                        if (len == 0) {
                                transmit_stop_tone(d, l->instance, sub->callid);
@@ -7077,7 +7077,7 @@ static int handle_soft_key_event_message(struct skinny_req *req, struct skinnyse
                        d->name, instance, callreference);
                if (sub->dialer_sched && !skinny_sched_del(sub->dialer_sched, sub)) {
                        size_t len;
-                       sub->dialer_sched = 0;
+                       sub->dialer_sched = -1;
                        len = strlen(sub->exten);
                        if (len > 0) {
                                sub->exten[len-1] = '\0';

diff --git a/res/res_rtp_asterisk.c b/res/res_rtp_asterisk.c
index 04113123ea07579fc530091781e18d48e188c674..fb6a5be1b67467073f07b9dfc393735e0f206380 100644 (file)
--- a/res/res_rtp_asterisk.c
+++ b/res/res_rtp_asterisk.c
@@ -3311,7 +3311,7 @@ static int ast_rtp_raw_write(struct ast_rtp_instance *instance, struct ast_frame
                        rtp->txcount++;
                        rtp->txoctetcount += (res - hdrlen);
 
-                       if (rtp->rtcp && rtp->rtcp->schedid < 1) {
+                       if (rtp->rtcp && rtp->rtcp->schedid < 0) {
                                ast_debug(1, "Starting RTCP transmission on RTP instance '%p'\n", instance);
                                ao2_ref(instance, +1);
                                rtp->rtcp->schedid = ast_sched_add(rtp->sched, ast_rtcp_calc_interval(rtp), ast_rtcp_write, instance);
@@ -4522,7 +4522,7 @@ static struct ast_frame *ast_rtp_read(struct ast_rtp_instance *instance, int rtc
        }
 
        /* Do not schedule RR if RTCP isn't run */
-       if (rtp->rtcp && !ast_sockaddr_isnull(&rtp->rtcp->them) && rtp->rtcp->schedid < 1) {
+       if (rtp->rtcp && !ast_sockaddr_isnull(&rtp->rtcp->them) && rtp->rtcp->schedid < 0) {
                /* Schedule transmission of Receiver Report */
                ao2_ref(instance, +1);
                rtp->rtcp->schedid = ast_sched_add(rtp->sched, ast_rtcp_calc_interval(rtp), ast_rtcp_write, instance);