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freebsd-dev/sys/contrib/ngatm/netnatm/sig/sig_call.c
Hartmut Brandt e42ab7cde1 Virgin import of NgATM shared kernel/user part 1.1
2004-08-11 12:21:36 +00:00

4311 lines
104 KiB
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/*
* Copyright (c) 1996-2003
* Fraunhofer Institute for Open Communication Systems (FhG Fokus).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Author: Hartmut Brandt <harti@freebsd.org>
*
* $Begemot: libunimsg/netnatm/sig/sig_call.c,v 1.65 2004/08/05 07:11:00 brandt Exp $
*
* Call instance handling
*
* Note:
* In all functions that handle messages from the user or from
* the SAAL, commit memory allocation always at the begin of the
* function. If allocation fails, ignore saal messages and
* respond with an error to user messages.
*/
#include <netnatm/unimsg.h>
#include <netnatm/saal/sscfudef.h>
#include <netnatm/msg/unistruct.h>
#include <netnatm/msg/unimsglib.h>
#include <netnatm/sig/uni.h>
#include <netnatm/sig/unipriv.h>
#include <netnatm/sig/unimkmsg.h>
#include <netnatm/sig/unimsgcpy.h>
static enum call_state state_compat(struct call *, enum uni_callstate);
static void respond_drop_party_ack(struct call *, struct uni_ie_epref *, u_int);
#define DEF_PRIV_SIG(NAME, FROM) [SIG##NAME] = "SIG"#NAME,
static const char *const call_sigs[] = {
DEF_CALL_SIGS
};
#undef DEF_PRIV_SIG
TIMER_FUNC_CALL(t308, t308_func)
TIMER_FUNC_CALL(t303, t303_func)
TIMER_FUNC_CALL(t301, t301_func)
TIMER_FUNC_CALL(t310, t310_func)
TIMER_FUNC_CALL(t313, t313_func)
TIMER_FUNC_CALL(t322, t322_func)
const struct callstates callstates[] = {
[CALLST_NULL] = { "NU0", UNI_CALLSTATE_U0 },
[CALLST_U1] = { "U1", UNI_CALLSTATE_U1 },
[CALLST_U3] = { "U3", UNI_CALLSTATE_U3 },
[CALLST_U4] = { "U4", UNI_CALLSTATE_U4 },
[CALLST_U6] = { "U6", UNI_CALLSTATE_U6 },
[CALLST_U7] = { "U7", UNI_CALLSTATE_U7 },
[CALLST_U8] = { "U8", UNI_CALLSTATE_U8 },
[CALLST_U9] = { "U9", UNI_CALLSTATE_U9 },
[CALLST_U10] = { "U10", UNI_CALLSTATE_U10 },
[CALLST_U11] = { "U11", UNI_CALLSTATE_U11 },
[CALLST_U12] = { "U12", UNI_CALLSTATE_U12 },
[CALLST_N1] = { "N1", UNI_CALLSTATE_N1 },
[CALLST_N3] = { "N3", UNI_CALLSTATE_N3 },
[CALLST_N4] = { "N4", UNI_CALLSTATE_N4 },
[CALLST_N6] = { "N6", UNI_CALLSTATE_N6 },
[CALLST_N7] = { "N7", UNI_CALLSTATE_N7 },
[CALLST_N8] = { "N8", UNI_CALLSTATE_N8 },
[CALLST_N9] = { "N9", UNI_CALLSTATE_N9 },
[CALLST_N10] = { "N10", UNI_CALLSTATE_N10 },
[CALLST_N11] = { "N11", UNI_CALLSTATE_N11 },
[CALLST_N12] = { "N12", UNI_CALLSTATE_N12 },
};
static void unx_send_add_party_rej(struct call *c, struct uni_all *u);
static __inline void
set_call_state(struct call *c, enum call_state state)
{
ASSERT(state == CALLST_NULL ||
(c->uni->proto == UNIPROTO_UNI40U &&
(state >= CALLST_U1 && state <= CALLST_U12)) ||
(c->uni->proto == UNIPROTO_UNI40N &&
(state >= CALLST_N1 && state <= CALLST_N12)),
("setting wrong callstate for proto %u: %u", c->uni->proto, state));
if (c->cstate != state) {
VERBOSE(c->uni, UNI_FAC_CALL, 1, "call %d/%d %s -> %s",
c->cref, c->mine, callstates[c->cstate].name,
callstates[state].name);
c->cstate = state;
}
}
static enum uni_callstate
map_callstate(enum call_state state)
{
return (callstates[state].ext);
}
/*
* Find the call. Assume, that the cref is one of a message just received.
* That is, if the call reference flag is 0 it is his call, if it is 1 it
* is my call.
*/
struct call *
uni_find_call(struct uni *uni, struct uni_cref *cref)
{
struct call *c;
TAILQ_FOREACH(c, &uni->calls, link)
if (c->cref == cref->cref && (!c->mine == !cref->flag))
return (c);
return (NULL);
}
struct call *
uni_find_callx(struct uni *uni, u_int cref, u_int mine)
{
struct call *c;
TAILQ_FOREACH(c, &uni->calls, link)
if (c->cref == cref && !c->mine == !mine)
return (c);
return (NULL);
}
/*
* Create a new call instance. The type must be set by the caller.
*/
struct call *
uni_create_call(struct uni *uni, u_int cref, u_int mine, uint32_t cookie)
{
struct call *c;
struct uniapi_call_created *ind;
struct uni_msg *api;
if ((c = CALL_ALLOC()) == NULL)
return (NULL);
if ((ind = ALLOC_API(struct uniapi_call_created, api)) == NULL) {
CALL_FREE(c);
return (NULL);
}
ind->cref.cref = cref;
ind->cref.flag = mine;
c->uni = uni;
c->type = CALL_NULL;
c->cref = cref;
c->mine = mine;
c->cstate = CALLST_NULL;
TAILQ_INIT(&c->parties);
TIMER_INIT_CALL(c, t301);
TIMER_INIT_CALL(c, t303);
TIMER_INIT_CALL(c, t308);
TIMER_INIT_CALL(c, t310);
TIMER_INIT_CALL(c, t313);
TIMER_INIT_CALL(c, t322);
TAILQ_INSERT_HEAD(&uni->calls, c, link);
uni->funcs->uni_output(uni, uni->arg, UNIAPI_CALL_CREATED, cookie, api);
VERBOSE(c->uni, UNI_FAC_CALL, 1, "created call %u/%s",
c->cref, c->mine ? "mine" : "his");
return (c);
}
struct call *
uni_create_new_call(struct uni *uni, uint32_t cookie)
{
struct call *c;
uint32_t old = uni->cref_alloc++;
again:
if (uni->cref_alloc == (1 << 23))
uni->cref_alloc = 1;
if (uni->cref_alloc == old)
return (NULL); /* all crefs exhausted!!! */
TAILQ_FOREACH(c, &uni->calls, link)
if (c->mine && c->cref == uni->cref_alloc) {
uni->cref_alloc++;
goto again;
}
return (uni_create_call(uni, uni->cref_alloc, 1, cookie));
}
/*
* Assume timers are all stopped. Memory is not actually freed unless
* the reference count drops to 0.
* This function is assumed to remove the call from the parent UNI's
* call queue.
*/
void
uni_destroy_call(struct call *c, int really)
{
struct uniapi_call_destroyed *ind;
struct uni_msg *api;
struct party *p;
VERBOSE(c->uni, UNI_FAC_CALL, 1, "destroying call %u/%s",
c->cref, c->mine ? "mine" : "his");
TIMER_DESTROY_CALL(c, t301);
TIMER_DESTROY_CALL(c, t303);
TIMER_DESTROY_CALL(c, t308);
TIMER_DESTROY_CALL(c, t310);
TIMER_DESTROY_CALL(c, t313);
TIMER_DESTROY_CALL(c, t322);
TAILQ_REMOVE(&c->uni->calls, c, link);
uni_delsig(c->uni, SIG_CALL, c, NULL);
while ((p = TAILQ_FIRST(&c->parties)) != NULL) {
TAILQ_REMOVE(&c->parties, p, link);
uni_destroy_party(p, really);
}
if (!really) {
ind = ALLOC_API(struct uniapi_call_destroyed, api);
if (ind != NULL) {
ind->cref.cref = c->cref;
ind->cref.flag = c->mine;
uni_enq_coord(c->uni, SIGO_CALL_DESTROYED, 0, api);
}
uni_enq_call(c, SIGC_CALL_DELETE, 0, NULL, NULL);
return;
}
CALL_FREE(c);
}
static void
allocate_epref(struct call *c, struct uni_ie_epref *epref)
{
struct party *p;
uint32_t old = c->epref_alloc++;
again:
if (c->epref_alloc == (1 << 15))
c->epref_alloc = 0;
if (c->epref_alloc == old)
return; /* all crefs exhausted!!! */
TAILQ_FOREACH(p, &c->parties, link)
if (p->epref == c->epref_alloc) {
c->epref_alloc++;
goto again;
}
IE_SETPRESENT(*epref);
epref->flag = 0;
epref->epref = c->epref_alloc;
epref->h.coding = UNI_CODING_ITU;
epref->h.act = UNI_IEACT_DEFAULT;
}
static void
reset_all_timers(struct call *c)
{
TIMER_STOP_CALL(c, t301);
TIMER_STOP_CALL(c, t303);
TIMER_STOP_CALL(c, t308);
TIMER_STOP_CALL(c, t310);
TIMER_STOP_CALL(c, t313);
TIMER_STOP_CALL(c, t322);
}
/*
* Initiate call clearing because of a problem. This is label D in
* the SDLs and is called from many places.
* The call must have constructed the cause IE in struct call.
*
* Q.2971:Call-Control-U 27/39
* Q.2971:Call-Control-N 28/39
*
* Memory problems are handled differently here: we simply ignore them
* by not sending messages or user indications. Because of T308 we
* may be lucky to send the message in a second run.
*
* It is assumed, that the cause for the release is constructed by
* the calling function in uni->cause.
*/
static void
clear_callD(struct call *c)
{
struct uni_msg *api;
struct uniapi_release_indication *ind;
struct party *p;
struct uni_all *rel;
/*
* Send indication to API
*/
if ((ind = ALLOC_API(struct uniapi_release_indication, api)) != NULL) {
ind->release.hdr.cref.cref = c->cref;
ind->release.hdr.cref.flag = c->mine;
ind->release.hdr.act = UNI_MSGACT_DEFAULT;
ind->release.cause[0] = c->uni->cause;
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_RELEASE_indication, 0, api);
}
reset_all_timers(c);
if (c->type == CALL_LEAF || c->type == CALL_ROOT) {
TAILQ_FOREACH(p, &c->parties, link) {
uni_enq_party(p, SIGP_RELEASE_request, 0, NULL, NULL);
}
}
memset(&c->msg_release, 0, sizeof(c->msg_release));
c->msg_release.cause[0] = c->uni->cause;
if ((rel = UNI_ALLOC()) != NULL) {
rel->u.release = c->msg_release;
MK_MSG_ORIG(rel, UNI_RELEASE, c->cref, !c->mine);
(void)uni_send_output(rel, c->uni);
UNI_FREE(rel);
}
TIMER_START_CALL(c, t308, c->uni->timer308);
c->cnt308 = 0;
if (c->uni->proto == UNIPROTO_UNI40N)
set_call_state(c, CALLST_N12);
else
set_call_state(c, CALLST_U11);
}
/**********************************************************************/
/*
* SETUP message in state NULL
*
* Q.2971:Call-Control-U 4/39
* Q.2971:Call-Control-N 4/39
*/
static void
un0_setup(struct call *c, struct uni_msg *m, struct uni_all *u,
enum call_state new_state)
{
struct uni_all *resp;
struct party *p;
struct uniapi_setup_indication *ind;
struct uni_msg *api;
enum verify v;
if ((ind = ALLOC_API(struct uniapi_setup_indication, api)) == NULL) {
clear:
uni_destroy_call(c, 0);
uni_msg_destroy(m);
UNI_FREE(u);
return;
}
/*
* Analyze message
*/
(void)uni_decode_body(m, u, &c->uni->cx);
MANDATE_IE(c->uni, u->u.setup.bearer, UNI_IE_BEARER);
MANDATE_IE(c->uni, u->u.setup.traffic, UNI_IE_TRAFFIC);
MANDATE_IE(c->uni, u->u.setup.called, UNI_IE_CALLED);
/*
* UNI4.0: 9.1.1.2 Notes 2/3
*/
if (!IE_ISPRESENT(u->u.setup.qos))
MANDATE_IE(c->uni, u->u.setup.exqos, UNI_IE_EXQOS);
if (!IE_ISPRESENT(u->u.setup.exqos))
MANDATE_IE(c->uni, u->u.setup.qos, UNI_IE_QOS);
/*
* Q.2971
*/
if (IE_ISGOOD(u->u.setup.bearer) &&
u->u.setup.bearer.cfg == UNI_BEARER_MP) {
if (IE_ISGOOD(u->u.setup.epref) &&
u->u.setup.epref.flag == 1) {
IE_SETERROR(u->u.setup.epref);
UNI_SAVE_IERR(&c->uni->cx, UNI_IE_EPREF,
u->u.setup.epref.h.act, UNI_IERR_BAD);
}
uni_mandate_epref(c->uni, &u->u.setup.epref);
}
v = uni_verify(c->uni, u->u.hdr.act);
switch (v) {
case VFY_RAI:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
UNI_CALLSTATE_U0, NULL, 0);
/* FALLTHRU */
case VFY_I:
uni_msg_destroy(api);
goto clear;
case VFY_RAIM:
case VFY_CLR:
if ((resp = UNI_ALLOC()) != NULL) {
MK_MSG_RESP(resp, UNI_RELEASE_COMPL, &u->u.hdr.cref);
uni_vfy_collect_ies(c->uni);
resp->u.release_compl.cause[0] = c->uni->cause;
uni_send_output(resp, c->uni);
UNI_FREE(resp);
}
uni_msg_destroy(api);
goto clear;
case VFY_RAP:
case VFY_RAPU:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(new_state), NULL, 0);
/* FALLTHRU */
case VFY_OK:
break;
}
if (u->u.setup.bearer.cfg == UNI_BEARER_P2P) {
c->type = CALL_P2P;
} else {
c->type = CALL_LEAF;
if ((p = uni_create_party(c, &u->u.setup.epref)) == NULL) {
uni_msg_destroy(api);
goto clear;
}
uni_enq_party(p, SIGP_SETUP, 0, NULL, NULL);
}
ind->setup.hdr = u->u.hdr;
copy_msg_setup(&u->u.setup, &ind->setup);
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_SETUP_indication, 0, api);
uni_msg_destroy(m);
UNI_FREE(u);
set_call_state(c, new_state);
}
/*
* Setup.request from user
*
* Q.2971:Call-Control-U 4/39 (U0)
* Q.2971:Call-Control-N 4/39 (N0)
*/
static void
un0_setup_request(struct call *c, struct uni_msg *m, uint32_t cookie,
enum call_state new_state)
{
struct uniapi_setup_request *arg =
uni_msg_rptr(m, struct uniapi_setup_request *);
struct uni_setup *setup = &arg->setup;
struct uni_all *out;
struct party *p;
if (!IE_ISGOOD(setup->bearer)) {
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_ERROR_MISSING_IE, cookie);
uni_destroy_call(c, 0);
return;
}
if ((out = UNI_ALLOC()) == NULL) {
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_ERROR_NOMEM, cookie);
uni_destroy_call(c, 0);
return;
}
c->msg_setup = *setup;
if (IE_ISGOOD(setup->connid))
c->connid = setup->connid;
if (setup->bearer.cfg == UNI_BEARER_P2P) {
c->type = CALL_P2P;
} else {
c->type = CALL_ROOT;
/*
* If the user didn't specify a endpoint reference,
* use 0. Use IE_IGNORE accoring to Appendix II Q.2971
*/
if (!IE_ISPRESENT(c->msg_setup.epref)) {
MK_IE_EPREF(c->msg_setup.epref, 0, 0);
if (c->uni->proto == UNIPROTO_UNI40N)
c->msg_setup.epref.h.act = UNI_IEACT_IGNORE;
} else if (!IE_ISGOOD(c->msg_setup.epref)) {
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_ERROR_BAD_IE, cookie);
uni_destroy_call(c, 0);
return;
}
if ((p = uni_create_partyx(c, 0, 1, cookie)) == NULL) {
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_ERROR_NOMEM, cookie);
uni_destroy_call(c, 0);
return;
}
uni_enq_party(p, SIGP_SETUP_request, cookie, NULL, NULL);
}
uni_msg_destroy(m);
out->u.setup = c->msg_setup;
MK_MSG_ORIG(out, UNI_SETUP, c->cref, !c->mine);
(void)uni_send_output(out, c->uni);
UNI_FREE(out);
TIMER_START_CALL(c, t303, c->uni->timer303);
c->cnt303 = 0;
set_call_state(c, new_state);
uniapi_call_error(c, UNIAPI_OK, cookie);
}
/*
* CALL PROCEEDING message
*
* Q.2971:Call-Control-U 6/39 (in U1)
* Q.2971:Call-Control-N 11/39 (in N6)
*/
static void
u1n6_call_proc(struct call *c, struct uni_msg *m, struct uni_all *u,
enum call_state new_state)
{
struct uni_call_proc *cp = &u->u.call_proc;
struct uniapi_proceeding_indication *ind;
struct uni_msg *api;
ind = ALLOC_API(struct uniapi_proceeding_indication, api);
if (ind == NULL) {
ignore:
uni_msg_destroy(m);
UNI_FREE(u);
return;
}
/*
* Analyze message
*/
(void)uni_decode_body(m, u, &c->uni->cx);
if (!IE_ISPRESENT(c->connid) && !IE_ISGOOD(cp->connid))
uni_mandate_ie(c->uni, UNI_IE_CONNID);
/*
* Q.2971: L3MU_01_03 requests us to ignore the message if
* the EPREF is missing.
*/
if (c->msg_setup.bearer.cfg == UNI_BEARER_MP &&
IE_ISPRESENT(c->msg_setup.epref)) {
if (!IE_ISPRESENT(cp->epref))
uni_mandate_ie(c->uni, UNI_IE_EPREF); \
else if (IE_ISGOOD(cp->epref) &&
(cp->epref.flag != 1 ||
cp->epref.epref != c->msg_setup.epref.epref)) {
IE_SETERROR(cp->epref);
UNI_SAVE_IERR(&c->uni->cx, UNI_IE_EPREF,
cp->epref.h.act, UNI_IERR_BAD);
}
}
switch (uni_verify(c->uni, u->u.hdr.act)) {
case VFY_CLR:
uni_vfy_collect_ies(c->uni);
clear_callD(c);
/* FALLTHRU */
case VFY_I:
uni_msg_destroy(api);
goto ignore;
case VFY_RAIM:
case VFY_RAI:
report:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate), NULL, 0);
uni_msg_destroy(api);
goto ignore;
case VFY_RAP:
case VFY_RAPU:
if (c->type == CALL_ROOT && !IE_ISGOOD(cp->epref))
goto report;
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(new_state), NULL, 0);
/* FALLTHRU */
case VFY_OK:
break;
}
TIMER_STOP_CALL(c, t303);
if (IE_ISGOOD(cp->connid))
c->connid = cp->connid;
ind->call_proc.hdr = u->u.hdr;
copy_msg_call_proc(cp, &ind->call_proc);
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_PROCEEDING_indication, 0, api);
TIMER_START_CALL(c, t310, c->uni->timer310);
uni_msg_destroy(m);
UNI_FREE(u);
set_call_state(c, new_state);
}
/*
* T303 tick.
*
* Q.2971:Call-Control-U 6/39
* Q.2971:Call-Control-N 11/39
*/
static void
u1n6_t303(struct call *c)
{
struct uni_all *msg;
struct uniapi_release_confirm *conf;
struct uni_msg *api;
VERBOSE(c->uni, UNI_FAC_TIMEOUT, 1, "call %u/%s T303 tick %d",
c->cref, c->mine ? "mine" : "his", c->cnt303 + 1);
if (++c->cnt303 < c->uni->init303) {
if ((msg = UNI_ALLOC()) != NULL) {
msg->u.setup = c->msg_setup;
MK_MSG_ORIG(msg, UNI_SETUP, c->cref, !c->mine);
(void)uni_send_output(msg, c->uni);
UNI_FREE(msg);
}
TIMER_START_CALL(c, t303, c->uni->timer303);
return;
}
/*
* Send indication to API
*/
if ((conf = ALLOC_API(struct uniapi_release_confirm, api)) != NULL) {
conf->release.hdr.cref.cref = c->cref;
conf->release.hdr.cref.flag = c->mine;
conf->release.hdr.act = UNI_MSGACT_DEFAULT;
MK_IE_CAUSE(conf->release.cause[0], UNI_CAUSE_LOC_USER,
UNI_CAUSE_NO_RESPONSE);
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_RELEASE_confirm, 0, api);
}
/*
* send to party (there may be only one)
*/
if (c->type == CALL_ROOT && !TAILQ_EMPTY(&c->parties)) {
uni_enq_party(TAILQ_FIRST(&c->parties),
SIGP_RELEASE_confirm, 0, NULL, NULL);
}
uni_destroy_call(c, 0);
}
/*
* T310 (Call Proceeding) timer tick.
*
* Q.2971:Call-Control-U 7/39
* Q.2971:Call-Control-N 17/39
*/
static void
u3n9_t310(struct call *c)
{
VERBOSE(c->uni, UNI_FAC_TIMEOUT, 1, "call %u/%s T310 tick",
c->cref, c->mine ? "mine" : "his");
MK_IE_CAUSE(c->uni->cause, UNI_CAUSE_LOC_USER, UNI_CAUSE_NO_RESPONSE);
clear_callD(c);
}
/*
* T301 (Alerting) timer tick.
*
* Q.2971:Call-Control-U Missing
* Q.2971:Call-Control-N 14/39
*/
static void
u4n7_t301(struct call *c)
{
VERBOSE(c->uni, UNI_FAC_TIMEOUT, 1, "call %u/%s T301 tick",
c->cref, c->mine ? "mine" : "his");
MK_IE_CAUSE(c->uni->cause, UNI_CAUSE_LOC_USER, UNI_CAUSE_NO_RESP_ALERT);
clear_callD(c);
}
/*
* ALERTING received
*
* Q.2971:Call-Control-U 37/39 (U1)
* Q.2971:Call-Control-U 7/39 (U3)
* Q.2971:Call-Control-N 9/39 (N6)
* Q.2971:Call-Control-N 17/39 (N9)
*
* There are two errors in the user side SDL Annex A:
*
* - the resetted timers are swapped (T310 and T303)
*
* - for U1 we should go to C12, not C3 to start T301.
*/
static void
unx_alerting(struct call *c, struct uni_msg *m, struct uni_all *u,
enum call_state new_state)
{
struct uni_alerting *al = &u->u.alerting;
struct uniapi_alerting_indication *ind;
struct uni_msg *api;
ind = ALLOC_API(struct uniapi_alerting_indication, api);
if (ind == NULL) {
ignore:
uni_msg_destroy(m);
UNI_FREE(u);
return;
}
/*
* Analyze message
*/
(void)uni_decode_body(m, u, &c->uni->cx);
if (!IE_ISPRESENT(c->connid) && !IE_ISGOOD(al->connid))
uni_mandate_ie(c->uni, UNI_IE_CONNID);
/*
* Q.2971: L3MU_01_04 requests us to ignore the message if the
* EPREF is missing.
*/
if (c->msg_setup.bearer.cfg == UNI_BEARER_MP &&
IE_ISPRESENT(c->msg_setup.epref)) {
if (!IE_ISPRESENT(al->epref))
uni_mandate_ie(c->uni, UNI_IE_EPREF); \
else if (IE_ISGOOD(al->epref) &&
(al->epref.flag != 1 ||
al->epref.epref != c->msg_setup.epref.epref)) {
IE_SETERROR(al->epref);
UNI_SAVE_IERR(&c->uni->cx, UNI_IE_EPREF,
al->epref.h.act, UNI_IERR_BAD);
}
}
switch (uni_verify(c->uni, u->u.hdr.act)) {
case VFY_CLR:
uni_vfy_collect_ies(c->uni);
clear_callD(c);
case VFY_I:
uni_msg_destroy(api);
goto ignore;
case VFY_RAIM:
case VFY_RAI:
report:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate), NULL, 0);
uni_msg_destroy(api);
goto ignore;
case VFY_RAP:
case VFY_RAPU:
if (c->type == CALL_ROOT && !IE_ISGOOD(al->epref))
goto report;
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate), NULL, 0);
case VFY_OK:
break;
}
if (c->cstate == CALLST_U1 || c->cstate == CALLST_N6)
TIMER_STOP_CALL(c, t303);
else if (c->cstate == CALLST_U3 || c->cstate == CALLST_N9)
TIMER_STOP_CALL(c, t310);
if (IE_ISGOOD(al->connid))
c->connid = al->connid;
ind->alerting.hdr = u->u.hdr;
copy_msg_alerting(al, &ind->alerting);
if (c->type == CALL_LEAF || c->type == CALL_ROOT) {
uni_enq_party(TAILQ_FIRST(&c->parties), SIGP_ALERTING,
0, NULL, NULL);
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_ALERTING_indication, 0, api);
} else {
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_ALERTING_indication, 0, api);
TIMER_START_CALL(c, t301, c->uni->timer301);
}
UNI_FREE(u);
uni_msg_destroy(m);
set_call_state(c, new_state);
}
/*
* Proceeding.request from API
*
* Q.2971:Call-Control-U 12/39 (U6)
* Q.2971:Call-Control-N 6/39 (N1)
*/
static void
u6n1_proceeding_request(struct call *c, struct uni_msg *m, uint32_t cookie,
enum call_state new_state)
{
struct uni_all *msg;
struct uniapi_proceeding_request *arg =
uni_msg_rptr(m, struct uniapi_proceeding_request *);
if ((msg = UNI_ALLOC()) == NULL) {
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_ERROR_NOMEM, cookie);
return;
}
if (IE_ISGOOD(arg->call_proc.connid))
c->connid = arg->call_proc.connid;
msg->u.call_proc = arg->call_proc;
MK_MSG_ORIG(msg, UNI_CALL_PROC, c->cref, !c->mine);
(void)uni_send_output(msg, c->uni);
UNI_FREE(msg);
set_call_state(c, new_state);
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_OK, cookie);
}
/*
* Alerting.request from API
*
* Q.2971:Call-Control-U 13/39 (U6)
* Q.2971:Call-Control-U 17/39 (U9)
* Q.2971:Call-Control-N 38/39 (N1)
* Q.2971:Call-Control-N 7/39 (N3)
*/
static void
unx_alerting_request(struct call *c, struct uni_msg *m, uint32_t cookie,
enum call_state new_state)
{
struct uni_all *msg;
struct uniapi_alerting_request *arg =
uni_msg_rptr(m, struct uniapi_alerting_request *);
if ((msg = UNI_ALLOC()) == NULL) {
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_ERROR_NOMEM, cookie);
return;
}
if (c->type == CALL_ROOT || c->type == CALL_LEAF) {
uni_enq_party(TAILQ_FIRST(&c->parties),
SIGP_ALERTING_request, cookie, NULL, NULL);
}
/*
* It's not really clear, what happens, if we send another
* connid in CALL_PROC and ALERTING
*/
if (!IE_ISGOOD(c->connid) && IE_ISGOOD(arg->alerting.connid))
c->connid = arg->alerting.connid;
msg->u.alerting = arg->alerting;
MK_MSG_ORIG(msg, UNI_ALERTING, c->cref, !c->mine);
(void)uni_send_output(msg, c->uni);
UNI_FREE(msg);
set_call_state(c, new_state);
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_OK, cookie);
}
/*
* Setup.response from API
*
* Q.2971:Call-Control-U 13/39 (U6)
* Q.2971:Call-Control-U 14/39 (U7)
* Q.2971:Call-Control-U 17/39 (U9)
* Q.2971:Call-Control-N 39/39 (N1)
* Q.2971:Call-Control-N 7/39 (N3)
* Q.2971:Call-Control-N 8/39 (N4)
*/
static void
unx_setup_response(struct call *c, struct uni_msg *m, uint32_t cookie,
enum call_state new_state)
{
struct uni_all *msg;
struct uniapi_setup_response *arg =
uni_msg_rptr(m, struct uniapi_setup_response *);
struct party *p;
if ((msg = UNI_ALLOC()) == NULL) {
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_ERROR_NOMEM, cookie);
return;
}
if (!IE_ISGOOD(c->connid) && IE_ISGOOD(arg->connect.connid))
c->connid = arg->connect.connid;
if (IE_ISGOOD(arg->connect.epref)) {
p = uni_find_partyx(c, arg->connect.epref.epref,
!arg->connect.epref.flag);
if (p == NULL) {
uniapi_call_error(c, UNIAPI_ERROR_BAD_PARTY, cookie);
UNI_FREE(msg);
uni_msg_destroy(m);
return;
}
/* we need to remember that we have sent the CONNECT from this
* party because the CONNECT ACK must move only this party
* into P7 */
p->flags |= PARTY_CONNECT;
} else if (c->type == CALL_LEAF) {
/* XXX don't mandate if only one party */
uniapi_call_error(c, UNIAPI_ERROR_BAD_PARTY, cookie);
UNI_FREE(msg);
uni_msg_destroy(m);
return;
}
/* inform the parties on the network side */
if (c->uni->proto == UNIPROTO_UNI40N && c->type == CALL_LEAF)
TAILQ_FOREACH(p, &c->parties, link)
uni_enq_party(p, SIGP_SETUP_response, 0, NULL, NULL);
msg->u.connect = arg->connect;
MK_MSG_ORIG(msg, UNI_CONNECT, c->cref, !c->mine);
(void)uni_send_output(msg, c->uni);
UNI_FREE(msg);
if (c->uni->proto == UNIPROTO_UNI40U)
TIMER_START_CALL(c, t313, c->uni->timer313);
set_call_state(c, new_state);
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_OK, cookie);
}
/*
* Setup_complete.request
*
* Q.2971:Call-Control-N 15/39 (N8)
*/
static void
n8_setup_compl_request(struct call *c, struct uni_msg *m, uint32_t cookie,
enum call_state new_state)
{
struct uni_all *msg;
struct uniapi_setup_complete_request *arg =
uni_msg_rptr(m, struct uniapi_setup_complete_request *);
struct party *p;
if ((msg = UNI_ALLOC()) == NULL) {
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_ERROR_NOMEM, cookie);
return;
}
/* inform the parties on the network side */
if (c->uni->proto == UNIPROTO_UNI40N &&
(c->type == CALL_LEAF || c->type == CALL_ROOT)) {
TAILQ_FOREACH(p, &c->parties, link)
uni_enq_party(p, SIGP_SETUP_COMPL_request,
0, NULL, NULL);
}
msg->u.connect_ack = arg->connect_ack;
MK_MSG_ORIG(msg, UNI_CONNECT_ACK, c->cref, !c->mine);
(void)uni_send_output(msg, c->uni);
UNI_FREE(msg);
set_call_state(c, new_state);
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_OK, cookie);
}
/*
* CONNECT message
*
* Q.2971:Call-Control-U 7-8/39 (U3)
* Q.2971:Call-Control-U 11/39 (U4)
* Q.2971:Call-Control-U 37/39 (U1)
* Q.2971:Call-Control-N 9-10/39 (N6)
* Q.2971:Call-Control-N 14/39 (N7)
* Q.2971:Call-Control-N 17/39 (N9)
*/
static void
unx_connect(struct call *c, struct uni_msg *m, struct uni_all *u,
enum call_state new_state)
{
struct uni_connect *co = &u->u.connect;
struct uniapi_setup_confirm *conf;
struct uni_msg *api;
struct uni_all *ack;
struct party *p;
conf = ALLOC_API(struct uniapi_setup_confirm, api);
if (conf == NULL) {
ignore:
UNI_FREE(u);
uni_msg_destroy(m);
return;
}
if ((ack = UNI_ALLOC()) == NULL) {
uni_msg_destroy(api);
goto ignore;
}
/*
* Analyze message
*/
(void)uni_decode_body(m, u, &c->uni->cx);
if (!IE_ISPRESENT(c->connid) && !IE_ISGOOD(co->connid))
uni_mandate_ie(c->uni, UNI_IE_CONNID);
/*
* Q.2971: L3MU_01_05 requires the epref to be present.
*/
p = NULL;
if (c->msg_setup.bearer.cfg == UNI_BEARER_MP) {
if (IE_ISPRESENT(c->msg_setup.epref)) {
if (!IE_ISPRESENT(co->epref))
uni_mandate_ie(c->uni, UNI_IE_EPREF); \
if (IE_ISGOOD(co->epref) &&
co->epref.flag != 1) {
IE_SETERROR(co->epref);
UNI_SAVE_IERR(&c->uni->cx, UNI_IE_EPREF,
co->epref.h.act, UNI_IERR_BAD);
}
}
if (IE_ISGOOD(co->epref)) {
p = uni_find_party(c, &co->epref);
if (p == NULL) {
respond_drop_party_ack(c, &co->epref,
UNI_CAUSE_ENDP_INV);
uni_msg_destroy(api);
UNI_FREE(ack);
goto ignore;
}
}
}
switch (uni_verify(c->uni, u->u.hdr.act)) {
case VFY_CLR:
uni_vfy_collect_ies(c->uni);
clear_callD(c);
/* FALLTHRU */
case VFY_I:
uni_msg_destroy(api);
UNI_FREE(ack);
goto ignore;
case VFY_RAIM:
case VFY_RAI:
report:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate), NULL, 0);
uni_msg_destroy(api);
UNI_FREE(ack);
goto ignore;
case VFY_RAP:
case VFY_RAPU:
if (c->type == CALL_ROOT && !IE_ISGOOD(co->epref))
goto report;
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(new_state), NULL, 0);
/* FALLTHRU */
case VFY_OK:
break;
}
if (IE_ISGOOD(co->connid))
c->connid = co->connid;
if (c->cstate == CALLST_U1 || c->cstate == CALLST_N6)
TIMER_STOP_CALL(c, t303);
else if (c->cstate == CALLST_U3 || c->cstate == CALLST_N9)
TIMER_STOP_CALL(c, t310);
else if (c->cstate == CALLST_U4 || c->cstate == CALLST_N7) {
if(c->type == CALL_P2P)
TIMER_STOP_CALL(c, t301);
}
/*
* This is sent to the party only on the user side and only
* to the one party in the epref (L3MU_05_03).
*/
if (c->uni->proto == UNIPROTO_UNI40U &&
(c->type == CALL_LEAF || c->type == CALL_ROOT))
uni_enq_party(p, SIGP_CONNECT, 0, NULL, NULL);
conf->connect.hdr = u->u.hdr;
copy_msg_connect(co, &conf->connect);
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_SETUP_confirm, 0, api);
if (c->uni->proto == UNIPROTO_UNI40U) {
/* this is left to the application on the network side */
MK_MSG_ORIG(ack, UNI_CONNECT_ACK, c->cref, !c->mine);
(void)uni_send_output(ack, c->uni);
UNI_FREE(ack);
}
UNI_FREE(u);
uni_msg_destroy(m);
set_call_state(c, new_state);
}
/*
* T313 (Connect) timer tick.
*
* Q.2971:Call-Control-U 15/39
*/
static void
u8_t313(struct call *c)
{
VERBOSE(c->uni, UNI_FAC_TIMEOUT, 1, "call %u/%s T313 tick",
c->cref, c->mine ? "mine" : "his");
MK_IE_CAUSE(c->uni->cause, UNI_CAUSE_LOC_USER, UNI_CAUSE_RECOVER);
ADD_CAUSE_TIMER(c->uni->cause, "313");
clear_callD(c);
}
/*
* CONNECT ACKNOWLEDGE message in U8
*
* Q.2971:Call-Control-U 15-16/39
*/
static void
u8_connect_ack(struct call *c, struct uni_msg *m, struct uni_all *u,
enum call_state new_state)
{
struct uniapi_setup_complete_indication *ind;
struct uni_msg *api;
ind = ALLOC_API(struct uniapi_setup_complete_indication, api);
if (ind == NULL) {
ignore:
uni_msg_destroy(m);
UNI_FREE(u);
return;
}
/*
* Analyze message
*/
(void)uni_decode_body(m, u, &c->uni->cx);
switch (uni_verify(c->uni, u->u.hdr.act)) {
case VFY_CLR:
uni_vfy_collect_ies(c->uni);
clear_callD(c);
/* FALLTHRU */
case VFY_I:
uni_msg_destroy(api);
goto ignore;
case VFY_RAIM:
case VFY_RAI:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate), NULL, 0);
uni_msg_destroy(api);
goto ignore;
case VFY_RAP:
case VFY_RAPU:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(new_state), NULL, 0);
/* FALLTHRU */
case VFY_OK:
break;
}
TIMER_STOP_CALL(c, t313);
if (c->type == CALL_LEAF) {
struct party *p;
TAILQ_FOREACH(p, &c->parties, link) {
if (p->flags & PARTY_CONNECT) {
uni_enq_party(p, SIGP_CONNECT_ACK,
0, NULL, NULL);
break;
}
}
}
ind->connect_ack.hdr = u->u.hdr;
copy_msg_connect_ack(&u->u.connect_ack, &ind->connect_ack);
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_SETUP_COMPLETE_indication, 0, api);
UNI_FREE(u);
uni_msg_destroy(m);
set_call_state(c, new_state);
}
/*
* CONNECT ACKNOWLEDGE message in N10
*
* Q.2971:Call-Control-N 18/39
*/
static void
n10_connect_ack(struct call *c, struct uni_msg *m, struct uni_all *u)
{
/*
* Analyze message
*/
(void)uni_decode_body(m, u, &c->uni->cx);
switch (uni_verify(c->uni, u->u.hdr.act)) {
case VFY_CLR:
uni_vfy_collect_ies(c->uni);
clear_callD(c);
/* FALLTHRU */
case VFY_I:
uni_msg_destroy(m);
UNI_FREE(u);
return;
case VFY_RAIM:
case VFY_RAI:
case VFY_RAP:
case VFY_RAPU:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate), NULL, 0);
/* FALLTHRU */
case VFY_OK:
uni_msg_destroy(m);
UNI_FREE(u);
return;
}
}
/*
* Release.response in U6 or U12.
*
* Q.2971:Call-Control-U 12/39 (U6)
* Q.2971:Call-Control-U 30/39 (U12)
* Q.2971:Call-Control-N 6/39 (N1)
* Q.2971:Call-Control-N 29/39 (N11)
*/
static void
unx_release_response(struct call *c, struct uni_msg *m, uint32_t cookie)
{
struct party *p;
struct uni_all *msg;
struct uniapi_release_response *arg =
uni_msg_rptr(m, struct uniapi_release_response *);
if ((msg = UNI_ALLOC()) == NULL) {
uniapi_call_error(c, UNIAPI_ERROR_NOMEM, cookie);
uni_msg_destroy(m);
return;
}
if (c->cstate == CALLST_U6 || c->cstate == CALLST_N1) {
if (c->type == CALL_ROOT || c->type == CALL_LEAF) {
TAILQ_FOREACH(p, &c->parties, link)
uni_enq_party(p, SIGP_RELEASE_response,
cookie, NULL, NULL);
}
}
msg->u.release_compl = arg->release_compl;
MK_MSG_ORIG(msg, UNI_RELEASE_COMPL, c->cref, !c->mine);
(void)uni_send_output(msg, c->uni);
UNI_FREE(msg);
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_OK, cookie);
uni_destroy_call(c, 0);
}
/*
* Got a RELEASE COMPLETE in any state expect U0
*
* Q.2971:Call-Control-U 25/39
* Q.2971:Call-Control-N 26/39
*
* This is also called from the restart processes.
*/
void
uni_release_compl(struct call *c, struct uni_all *u)
{
struct uni_msg *api;
struct uniapi_release_confirm *conf;
struct party *p;
u_int i, j;
if ((conf = ALLOC_API(struct uniapi_release_confirm, api)) == NULL)
return;
reset_all_timers(c);
if (c->type == CALL_ROOT || c->type == CALL_LEAF) {
TAILQ_FOREACH(p, &c->parties, link)
uni_enq_party(p, SIGP_RELEASE_COMPL, 0, NULL, NULL);
/* YYY optional call reoffering 10.3.3/10.3.4 */
}
conf->release.hdr = u->u.hdr;
for (i = j = 0; i < 2; i++)
if (IE_ISGOOD(u->u.release_compl.cause[i]))
conf->release.cause[j++] = u->u.release_compl.cause[i];
for (i = j = 0; i < UNI_NUM_IE_GIT; i++)
if (IE_ISGOOD(u->u.release_compl.git[i]))
conf->release.git[j++] = u->u.release_compl.git[i];
if (IE_ISGOOD(u->u.release_compl.uu))
conf->release.uu = u->u.release_compl.uu;
if (IE_ISGOOD(u->u.release_compl.crankback))
conf->release.crankback = u->u.release_compl.crankback;
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_RELEASE_confirm, 0, api);
uni_destroy_call(c, 0);
}
static void
unx_release_compl(struct call *c, struct uni_msg *m, struct uni_all *u)
{
(void)uni_decode_body(m, u, &c->uni->cx);
(void)uni_verify(c->uni, u->u.hdr.act); /* no point :-) */
uni_release_compl(c, u);
uni_msg_destroy(m);
UNI_FREE(u);
}
/*
* Got a RELEASE COMPLETE in any state expect U0 and U11
*
* Q.2971:Call-Control-U 25/39
* Q.2971:Call-Control-N 26/39
*/
static void
unx_release(struct call *c, struct uni_msg *m, struct uni_all *u,
enum call_state new_state)
{
struct uniapi_release_indication *ind;
struct uni_msg *api;
if ((ind = ALLOC_API(struct uniapi_release_indication, api)) == NULL) {
uni_msg_destroy(m);
UNI_FREE(u);
return;
}
(void)uni_decode_body(m, u, &c->uni->cx);
(void)uni_verify(c->uni, u->u.hdr.act); /* no point :-) */
reset_all_timers(c);
if (c->type == CALL_ROOT || c->type == CALL_LEAF) {
struct party *p;
TAILQ_FOREACH(p, &c->parties, link)
uni_enq_party(p, SIGP_RELEASE, 0, NULL, NULL);
/* YYY optional call reoffering 10.3.3/10.3.4 */
}
if (c->cstate != new_state) {
/*
* According to Q.2971 we should send a 2nd
* Release.indication.
* According to Q.2931 the recipte of a RELEASE in U12/N11
* is illegal.
* According to us make it legal, but don't send a 2nd
* indication.
*/
ind->release.hdr = u->u.hdr;
copy_msg_release(&u->u.release, &ind->release);
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_RELEASE_indication, 0, api);
} else
uni_msg_destroy(api);
uni_msg_destroy(m);
UNI_FREE(u);
set_call_state(c, new_state);
}
/*
* Got RELEASE in U11 or N12
*
* Q.2971:Call-Control-U 28/39
* Q.2971:Call-Control-N 30/39
*/
static void
u11n12_release(struct call *c, struct uni_msg *m, struct uni_all *u)
{
struct uniapi_release_confirm *conf;
struct uni_msg *api;
if ((conf = ALLOC_API(struct uniapi_release_confirm, api)) == NULL) {
uni_msg_destroy(m);
UNI_FREE(u);
return;
}
(void)uni_decode_body(m, u, &c->uni->cx);
(void)uni_verify(c->uni, u->u.hdr.act); /* no point :-) */
TIMER_STOP_CALL(c, t308);
conf->release.hdr = u->u.hdr;
copy_msg_release(&u->u.release, &conf->release);
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_RELEASE_confirm, 0, api);
uni_msg_destroy(m);
UNI_FREE(u);
uni_destroy_call(c, 0);
}
/*
* NOTIFY message
*
* Q.2971:Call-Control-U 18/39
* Q.2971:Call-Control-N 19/39
*/
static void
unx_notify(struct call *c, struct uni_msg *m, struct uni_all *u)
{
struct uniapi_notify_indication *ind;
struct uni_msg *api;
struct party *p = NULL;
if ((ind = ALLOC_API(struct uniapi_notify_indication, api)) == NULL) {
ignore:
uni_msg_destroy(m);
UNI_FREE(u);
return;
}
/*
* Analyze message
*/
(void)uni_decode_body(m, u, &c->uni->cx);
MANDATE_IE(c->uni, u->u.notify.notify, UNI_IE_NOTIFY);
if (IE_ISGOOD(u->u.notify.epref)) {
if ((p = uni_find_party(c, &u->u.notify.epref)) == NULL) {
respond_drop_party_ack(c, &u->u.notify.epref,
UNI_CAUSE_ENDP_INV);
uni_msg_destroy(api);
goto ignore;
}
}
switch (uni_verify(c->uni, u->u.hdr.act)) {
case VFY_CLR:
uni_msg_destroy(api);
uni_vfy_collect_ies(c->uni);
clear_callD(c);
goto ignore;
case VFY_RAIM:
case VFY_RAI:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate), &u->u.notify.epref,
p ? p->state : 0);
/* FALLTHRU */
case VFY_I:
uni_msg_destroy(api);
goto ignore;
case VFY_RAP:
case VFY_RAPU:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate), &u->u.notify.epref,
p ? p->state : 0);
case VFY_OK:
/* FALLTHRU */
break;
}
ind->notify.hdr = u->u.hdr;
copy_msg_notify(&u->u.notify, &ind->notify);
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_NOTIFY_indication, 0, api);
UNI_FREE(u);
uni_msg_destroy(m);
}
/*
* Notify.request from user
*
* Q.2971:Call-Control-U 18/39
* Q.2971:Call-Control-N 19/39
*/
static void
unx_notify_request(struct call *c, struct uni_msg *m, uint32_t cookie)
{
struct uni_all *msg;
struct uniapi_notify_request *arg =
uni_msg_rptr(m, struct uniapi_notify_request *);
if ((msg = UNI_ALLOC()) == NULL) {
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_ERROR_NOMEM, cookie);
return;
}
msg->u.notify = arg->notify;
MK_MSG_ORIG(msg, UNI_NOTIFY, c->cref, !c->mine);
(void)uni_send_output(msg, c->uni);
UNI_FREE(msg);
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_OK, cookie);
}
/**********************************************************************/
/*
* Release.request from API in any state except U11, U12, N11, N12
*
* Q.2971:Call-Control-U 27/39
* Q.2971:Call-Control-N 28/39
*/
static void
unx_release_request(struct call *c, struct uni_msg *m, uint32_t cookie,
enum call_state new_state)
{
struct uni_all *msg;
struct uniapi_release_request *arg =
uni_msg_rptr(m, struct uniapi_release_request *);
struct party *p;
if ((msg = UNI_ALLOC()) == NULL) {
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_ERROR_NOMEM, cookie);
return;
}
reset_all_timers(c);
if (c->type == CALL_LEAF || c->type == CALL_ROOT) {
TAILQ_FOREACH(p, &c->parties, link) {
uni_enq_party(p, SIGP_RELEASE_request, cookie,
NULL, NULL);
}
}
c->msg_release = arg->release;
if (!IE_ISPRESENT(c->msg_release.cause[0]) &&
!IE_ISPRESENT(c->msg_release.cause[1]))
MK_IE_CAUSE(c->msg_release.cause[0], UNI_CAUSE_LOC_USER,
UNI_CAUSE_UNSPEC);
msg->u.release = c->msg_release;
MK_MSG_ORIG(msg, UNI_RELEASE, c->cref, !c->mine);
(void)uni_send_output(msg, c->uni);
UNI_FREE(msg);
TIMER_START_CALL(c, t308, c->uni->timer308);
c->cnt308 = 0;
set_call_state(c, new_state);
uni_msg_destroy(m);
uniapi_call_error(c, UNIAPI_OK, cookie);
}
/*
* Message with unknown EPREF - send a drop party according to 9.5.3.2.3a)
*/
static void
respond_drop_party_ack(struct call *c, struct uni_ie_epref *epref,
u_int cause)
{
struct uni_all *msg;
if ((msg = UNI_ALLOC()) == NULL)
return;
MK_MSG_ORIG(msg, UNI_DROP_PARTY_ACK, c->cref, !c->mine);
MK_IE_EPREF(msg->u.drop_party_ack.epref, epref->epref, !epref->flag);
MK_IE_CAUSE(msg->u.drop_party_ack.cause, UNI_CAUSE_LOC_USER, cause);
(void)uni_send_output(msg, c->uni);
UNI_FREE(msg);
}
/*
* T308 (RELEASE) timer
*
* Q.2971:Call-Control-U 28/39
* Q.2971:Call-Control-N 30/39
*/
static void
u11n12_t308(struct call *c)
{
struct uni_all *msg;
struct uni_msg *api;
struct uniapi_release_confirm *conf;
VERBOSE(c->uni, UNI_FAC_TIMEOUT, 1, "call %u/%s T308 tick %d",
c->cref, c->mine ? "mine" : "his", c->cnt308 + 1);
if (++c->cnt308 < c->uni->init308) {
if ((msg = UNI_ALLOC()) != NULL) {
msg->u.release = c->msg_release;
MK_MSG_ORIG(msg, UNI_RELEASE, c->cref, !c->mine);
if (!IE_ISPRESENT(msg->u.release.cause[1])) {
MK_IE_CAUSE(msg->u.release.cause[1],
UNI_CAUSE_LOC_USER, UNI_CAUSE_RECOVER);
ADD_CAUSE_TIMER(msg->u.release.cause[1], "308");
}
(void)uni_send_output(msg, c->uni);
UNI_FREE(msg);
}
TIMER_START_CALL(c, t308, c->uni->timer308);
return;
}
/*
* Send indication to API
*/
if ((conf = ALLOC_API(struct uniapi_release_confirm, api)) != NULL) {
conf->release.hdr.cref.cref = c->cref;
conf->release.hdr.cref.flag = c->mine;
conf->release.hdr.act = UNI_MSGACT_DEFAULT;
MK_IE_CAUSE(conf->release.cause[0], UNI_CAUSE_LOC_USER,
UNI_CAUSE_RECOVER);
ADD_CAUSE_TIMER(conf->release.cause[0], "308");
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_RELEASE_confirm, 0, api);
}
uni_destroy_call(c, 0);
}
/**********************************************************************/
/*
* STATUS in U11/U12
*
* Q.2971:Call-Control-U 29/39 (U11)
* Q.2971:Call-Control-U 30/39 (U12)
* Q.2971:Call-Control-N 29/39 (N11)
* Q.2971:Call-Control-N 31/39 (N12)
*/
static void
un11un12_status(struct call *c, struct uni_msg *m, struct uni_all *u)
{
enum call_state ns;
struct uniapi_release_confirm *conf;
struct uni_msg *api;
struct party *p;
struct uniapi_status_indication *stat;
/*
* Analyze message
*/
(void)uni_decode_body(m, u, &c->uni->cx);
MANDATE_IE(c->uni, u->u.status.callstate, UNI_IE_CALLSTATE);
MANDATE_IE(c->uni, u->u.status.cause, UNI_IE_CAUSE);
ns = c->cstate;
if (IE_ISGOOD(u->u.status.callstate) &&
u->u.status.callstate.state == UNI_CALLSTATE_U0)
ns = CALLST_NULL;
p = NULL;
if (IE_ISGOOD(u->u.status.epref))
p = uni_find_party(c, &u->u.status.epref);
switch (uni_verify(c->uni, u->u.hdr.act)) {
case VFY_CLR:
uni_vfy_collect_ies(c->uni);
clear_callD(c);
uni_msg_destroy(m);
UNI_FREE(u);
return;
case VFY_RAIM:
case VFY_RAI:
case VFY_RAP:
case VFY_RAPU:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(ns), &u->u.status.epref,
p ? p->state : UNI_EPSTATE_NULL);
case VFY_I:
case VFY_OK:
break;
}
if (ns == c->cstate) {
/*
* Inform API
*/
stat = ALLOC_API(struct uniapi_status_indication, api);
if (stat != NULL) {
stat->cref = u->u.hdr.cref;
stat->my_state = map_callstate(c->cstate);
stat->his_state = u->u.status.callstate;
stat->his_cause = u->u.status.cause;
stat->epref = u->u.status.epref;
stat->epstate = u->u.status.epstate;
stat->my_cause = 0;
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_STATUS_indication, 0, api);
}
uni_msg_destroy(m);
UNI_FREE(u);
return;
}
uni_msg_destroy(m);
UNI_FREE(u);
/*
* Send indication to API
*/
if ((conf = ALLOC_API(struct uniapi_release_confirm, api)) != NULL) {
conf->release.hdr.cref.cref = c->cref;
conf->release.hdr.cref.flag = c->mine;
conf->release.hdr.act = UNI_MSGACT_DEFAULT;
MK_IE_CAUSE(conf->release.cause[0], UNI_CAUSE_LOC_USER,
UNI_CAUSE_MSG_INCOMP);
ADD_CAUSE_MTYPE(conf->release.cause[0], UNI_STATUS);
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_RELEASE_confirm, 0, api);
}
uni_destroy_call(c, 0);
}
static int
status_enq_filter(struct sig *sig, void *arg)
{
return (sig->type == SIG_CALL &&
(struct call *)arg == sig->call &&
sig->sig == SIGC_SEND_STATUS_ENQ);
}
/*
* STATUS in any state except U0/U11/U12 N0/N11/N12
*
* Q.2971:Call-Control-U 32/39
* Q.2971:Call-Control-N 33/39
*/
static void
unx_status(struct call *c, struct uni_msg *m, struct uni_all *u)
{
struct uniapi_status_indication *stat;
struct uniapi_release_confirm *conf;
enum call_state ns;
struct uni_msg *api;
struct party *p;
/*
* Analyze message
*/
(void)uni_decode_body(m, u, &c->uni->cx);
MANDATE_IE(c->uni, u->u.status.callstate, UNI_IE_CALLSTATE);
MANDATE_IE(c->uni, u->u.status.cause, UNI_IE_CAUSE);
ns = c->cstate;
if (IE_ISGOOD(u->u.status.callstate))
ns = state_compat(c, u->u.status.callstate.state);
p = NULL;
if (IE_ISGOOD(u->u.status.epref)) {
p = uni_find_party(c, &u->u.status.epref);
MANDATE_IE(c->uni, u->u.status.epstate, UNI_IE_EPSTATE);
}
switch (uni_verify(c->uni, u->u.hdr.act)) {
case VFY_CLR:
uni_vfy_collect_ies(c->uni);
clear_callD(c);
uni_msg_destroy(m);
UNI_FREE(u);
return;
case VFY_RAIM:
case VFY_RAI:
case VFY_RAP:
case VFY_RAPU:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(ns), &u->u.notify.epref,
p ? p->state : UNI_EPSTATE_NULL);
/* FALLTHRU */
case VFY_I:
case VFY_OK:
break;
}
if (u->u.status.callstate.state == UNI_CALLSTATE_U0) {
/* release_complete */
uni_msg_destroy(m);
UNI_FREE(u);
if (c->type == CALL_LEAF || c->type == CALL_ROOT) {
TAILQ_FOREACH(p, &c->parties, link)
uni_enq_party(p, SIGP_RELEASE_COMPL,
0, NULL, NULL);
}
/*
* Send indication to API
*/
conf = ALLOC_API(struct uniapi_release_confirm, api);
if (conf != NULL) {
conf->release.hdr.cref.cref = c->cref;
conf->release.hdr.cref.flag = c->mine;
conf->release.hdr.act = UNI_MSGACT_DEFAULT;
MK_IE_CAUSE(conf->release.cause[0], UNI_CAUSE_LOC_USER,
UNI_CAUSE_MSG_INCOMP);
ADD_CAUSE_MTYPE(conf->release.cause[0], UNI_STATUS);
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_RELEASE_confirm, 0, api);
}
uni_destroy_call(c, 0);
return;
}
if (IE_ISGOOD(u->u.status.cause) &&
u->u.status.cause.cause == UNI_CAUSE_STATUS) {
c->se_active = 0;
TIMER_STOP_CALL(c, t322);
uni_undel(c->uni, status_enq_filter, c);
}
/*
* Inform API
*/
if ((stat = ALLOC_API(struct uniapi_status_indication, api)) != NULL) {
stat->cref = u->u.hdr.cref;
stat->my_state = map_callstate(c->cstate);
stat->his_state = u->u.status.callstate;
stat->his_cause = u->u.status.cause;
stat->epref = u->u.status.epref;
stat->epstate = u->u.status.epstate;
}
if (ns == c->cstate) {
/* compatible or recovered */
if (p != NULL)
uni_enq_party(p, SIGP_STATUS, 0, m, u);
else {
if (IE_ISGOOD(u->u.status.epref) &&
(!IE_ISGOOD(u->u.status.epstate) ||
u->u.status.epstate.state != UNI_EPSTATE_NULL))
respond_drop_party_ack(c, &u->u.status.epref,
UNI_CAUSE_MSG_INCOMP);
uni_msg_destroy(m);
UNI_FREE(u);
}
if (stat != NULL) {
stat->my_cause = 0;
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_STATUS_indication, 0, api);
}
return;
}
/* incompatible */
if (stat != NULL) {
stat->my_cause = UNI_CAUSE_MSG_INCOMP;
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_STATUS_indication, 0, api);
}
MK_IE_CAUSE(c->uni->cause, UNI_CAUSE_LOC_USER, UNI_CAUSE_MSG_INCOMP);
uni_msg_destroy(m);
UNI_FREE(u);
clear_callD(c);
}
/*
* Enquiry peer status
*
* Q.2971:Call-Control-U 31/39
* Q.2971:Call-Control-N 32/39
*/
static void
unx_status_enquiry_request(struct call *c, struct uni_msg *msg, uint32_t cookie)
{
struct uniapi_status_enquiry_request *arg =
uni_msg_rptr(msg, struct uniapi_status_enquiry_request *);
struct party *p;
struct uni_all *stat;
if (c->se_active) {
/* This case is not handled in the SDLs */
uniapi_call_error(c, UNIAPI_ERROR_BUSY, cookie);
uni_msg_destroy(msg);
return;
}
if ((c->type == CALL_ROOT || c->type == CALL_LEAF) &&
IE_ISGOOD(arg->epref)) {
if ((p = uni_find_partyx(c, arg->epref.epref, !arg->epref.flag))
== NULL) {
uniapi_call_error(c, UNIAPI_ERROR_BAD_PARTY, cookie);
uni_msg_destroy(msg);
return;
}
uni_msg_destroy(msg);
uni_enq_party(p, SIGP_STATUS_ENQUIRY_request, cookie,
NULL, NULL);
return;
}
if ((stat = UNI_ALLOC()) == NULL) {
uniapi_call_error(c, UNIAPI_ERROR_NOMEM, cookie);
uni_msg_destroy(msg);
return;
}
memset(&c->stat_epref, 0, sizeof(c->stat_epref));
MK_MSG_ORIG(stat, UNI_STATUS_ENQ, c->cref, !c->mine);
(void)uni_send_output(stat, c->uni);
UNI_FREE(stat);
TIMER_START_CALL(c, t322, c->uni->timer322);
c->cnt322 = 0;
c->se_active = 1;
uniapi_call_error(c, UNIAPI_OK, cookie);
}
/*
* T322 tick
*
* Q.2971:Call-Control-U 34/39
* Q.2971:Call-Control-N 35/39
*/
static void
unx_t322(struct call *c)
{
struct uni_all *stat;
VERBOSE(c->uni, UNI_FAC_TIMEOUT, 1, "call %u/%s T322 tick %d",
c->cref, c->mine ? "mine" : "his", c->cnt322 + 1);
if (++c->cnt322 < c->uni->init322) {
if ((stat = UNI_ALLOC()) != NULL) {
MK_MSG_ORIG(stat, UNI_STATUS_ENQ, c->cref, !c->mine);
stat->u.status_enq.epref = c->stat_epref;
(void)uni_send_output(stat, c->uni);
UNI_FREE(stat);
}
TIMER_START_CALL(c, t322, c->uni->timer322);
return;
}
c->se_active = 0;
MK_IE_CAUSE(c->uni->cause, UNI_CAUSE_LOC_USER, UNI_CAUSE_RECOVER);
ADD_CAUSE_TIMER(c->uni->cause, "322");
clear_callD(c);
}
/*
* STATUS ENQUIRY message
*
* Q.2971:Call-Control-U 31/39
* Q.2971:Call-Control-N 32/39
*/
static void
unx_status_enq(struct call *c, struct uni_msg *m, struct uni_all *u)
{
struct party *p = NULL;
u_int epref, flag;
/*
* Analyze message
*/
(void)uni_decode_body(m, u, &c->uni->cx);
switch (uni_verify(c->uni, u->u.hdr.act)) {
case VFY_CLR:
uni_vfy_collect_ies(c->uni);
clear_callD(c);
uni_msg_destroy(m);
UNI_FREE(u);
return;
case VFY_RAIM:
case VFY_RAI:
case VFY_RAP:
case VFY_RAPU:
case VFY_I:
case VFY_OK:
break;
}
uni_msg_destroy(m);
if ((c->type == CALL_ROOT || c->type == CALL_LEAF) &&
IE_ISGOOD(u->u.status_enq.epref)) {
p = uni_find_party(c, &u->u.status_enq.epref);
epref = u->u.status_enq.epref.epref;
flag = u->u.status_enq.epref.flag;
memset(u, 0, sizeof(*u));
MK_IE_EPREF(u->u.status.epref, epref, !flag);
if (p != NULL)
MK_IE_EPSTATE(u->u.status.epstate, p->state);
else
MK_IE_EPSTATE(u->u.status.epstate, UNI_EPSTATE_NULL);
} else
memset(u, 0, sizeof(*u));
MK_MSG_ORIG(u, UNI_STATUS, c->cref, !c->mine);
MK_IE_CALLSTATE(u->u.status.callstate, map_callstate(c->cstate));
MK_IE_CAUSE(u->u.status.cause, UNI_CAUSE_LOC_USER, UNI_CAUSE_STATUS);
(void)uni_send_output(u, c->uni);
UNI_FREE(u);
}
/**********************************************************************/
/*
* Link-release.indication from SAAL in state U10 or N10.
*
* Q.2971:Call-Control-U 19/39
* Q.2971:Call-Control-N 20/39
*/
static void
un10_link_release_indication(struct call *c)
{
struct party *p;
if (c->type == CALL_LEAF || c->type == CALL_ROOT)
TAILQ_FOREACH(p, &c->parties, link) {
if (p->state != UNI_EPSTATE_ACTIVE)
uni_enq_party(p, SIGP_RELEASE_COMPL,
0, NULL, NULL);
}
uni_enq_coord(c->uni, SIGO_LINK_ESTABLISH_request, 0, NULL);
}
/*
* Link-release.indication from SAAL in all state except U10 and N10.
*
* Q.2971:Call-Control-U 36/39
* Q.2971:Call-Control-N 37/39
*/
static void
unx_link_release_indication(struct call *c)
{
struct uniapi_release_confirm *conf;
struct uni_msg *api;
struct party *p;
if (c->type == CALL_LEAF || c->type == CALL_ROOT)
TAILQ_FOREACH(p, &c->parties, link)
uni_enq_party(p, SIGP_RELEASE_COMPL, 0, NULL, NULL);
if ((conf = ALLOC_API(struct uniapi_release_confirm, api)) != NULL) {
conf->release.hdr.cref.cref = c->cref;
conf->release.hdr.cref.flag = c->mine;
conf->release.hdr.act = UNI_MSGACT_DEFAULT;
MK_IE_CAUSE(conf->release.cause[0], UNI_CAUSE_LOC_USER,
UNI_CAUSE_DST_OOO);
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_RELEASE_confirm, 0, api);
}
uni_destroy_call(c, 0);
}
/*
* Failed to establish SAAL link. Can happen only in U10 or N10.
*
* Q.2971:Call-Control-U 19/39
* Q.2971:Call-Control-N 20/39
*/
static void
un10_link_establish_error_indication(struct call *c)
{
struct party *p;
struct uni_msg *api;
struct uniapi_release_confirm *conf;
if (c->type == CALL_LEAF || c->type == CALL_ROOT)
TAILQ_FOREACH(p, &c->parties, link)
uni_enq_party(p, SIGP_RELEASE_COMPL, 0, NULL, NULL);
if ((conf = ALLOC_API(struct uniapi_release_confirm, api)) != NULL) {
conf->release.hdr.cref.cref = c->cref;
conf->release.hdr.cref.flag = c->mine;
conf->release.hdr.act = UNI_MSGACT_DEFAULT;
MK_IE_CAUSE(conf->release.cause[0], UNI_CAUSE_LOC_USER,
UNI_CAUSE_DST_OOO);
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_RELEASE_confirm, 0, api);
}
uni_destroy_call(c, 0);
}
/*
* Issue a STATUS ENQUIRY of we are not busy
*
* Q.2971: Call-Control-U: 34/39
* Q.2971: Call-Control-N: 34/39
*/
static void
call_se(struct call *c)
{
struct uni_all *stat;
c->cnt322 = 0;
if (c->se_active)
return;
memset(&c->stat_epref, 0, sizeof(c->stat_epref));
if ((stat = UNI_ALLOC()) != NULL) {
MK_MSG_ORIG(stat, UNI_STATUS_ENQ, c->cref, !c->mine);
(void)uni_send_output(stat, c->uni);
UNI_FREE(stat);
}
TIMER_START_CALL(c, t322, c->uni->timer322);
c->se_active = 1;
}
/*
* Link-establish.indication in U10
*
* Q.2971:Call-Control-U 19-20/39
* Q.2971:Call-Control-N 20-22/39
*/
static void
un10_link_establish_indication(struct call *c)
{
int act = 0;
struct party *p;
if (c->type == CALL_ROOT || c->type == CALL_LEAF) {
TAILQ_FOREACH(p, &c->parties, link)
if (p->state == UNI_EPSTATE_ACTIVE) {
act = 1;
uni_enq_party(p, SIGP_STATUS_ENQUIRY_request,
0, NULL, NULL);
}
if (act)
return;
}
call_se(c);
}
/*
* Link-establish.indication in NOT U10/U11/U12 N10/N11/N12
*
* Q.2971:Call-Control-U 36/39
* Q.2971:Call-Control-N 37/39
*/
static void
unx_link_establish_indication(struct call *c)
{
call_se(c);
}
/*
* Link-establish.confirm in U10 or N10
*
* Q.2971:Call-Control-U 19/39
* Q.2971:Call-Control-N 20/39
*/
static void
un10_link_establish_confirm(struct call *c)
{
struct party *p;
if (c->type == CALL_ROOT || c->type == CALL_LEAF) {
TAILQ_FOREACH(p, &c->parties, link)
uni_enq_party(p, SIGP_STATUS_ENQUIRY_request,
0, NULL, NULL);
return;
}
call_se(c);
}
/*
* STATUS ENQ from party
*
* Q.2971:Call-Control-U 21/39
* Q.2971:Call-Control-U 25/39
*/
static void
unx_send_party_status_enq(struct call *c, struct uni_all *u)
{
if (c->se_active) {
uni_delenq_sig(c->uni, SIG_CALL, c, NULL,
SIGC_SEND_STATUS_ENQ, 0, NULL, u);
return;
}
c->stat_epref = u->u.status_enq.epref;
(void)uni_send_output(u, c->uni);
UNI_FREE(u);
TIMER_START_CALL(c, t322, c->uni->timer322);
c->se_active = 1;
}
/**********************************************************************/
static void
make_drop_cause(struct call *c, struct uni_ie_cause *cause)
{
if (!IE_ISGOOD(*cause)) {
/* 9.5.7.1 paragraph 2 */
if (IE_ISPRESENT(*cause))
MK_IE_CAUSE(c->uni->cause, UNI_CAUSE_LOC_USER,
UNI_CAUSE_IE_INV);
else
MK_IE_CAUSE(c->uni->cause, UNI_CAUSE_LOC_USER,
UNI_CAUSE_MANDAT);
c->uni->cause.u.ie.len = 1;
c->uni->cause.u.ie.ie[0] = UNI_IE_CAUSE;
c->uni->cause.h.present |= UNI_CAUSE_IE_P;
} else if (!IE_ISGOOD(c->uni->cause))
c->uni->cause = *cause;
}
/*
* Drop-party.indication from Party-Control in any state.
*
* Q.2971:Call-Control-U 23/39
*/
static void
ux_drop_party_indication(struct call *c, struct uni_msg *api)
{
struct uniapi_drop_party_indication *drop =
uni_msg_rptr(api, struct uniapi_drop_party_indication *);
if (uni_party_act_count(c, 2) == 0) {
if (c->cstate != CALLST_U11) {
make_drop_cause(c, &drop->drop.cause);
clear_callD(c);
}
uni_msg_destroy(api);
return;
}
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_DROP_PARTY_indication, 0, api);
}
/*
* Drop-party.indication from Party-Control in any state.
*
* Q.2971:Call-Control-N 23/39
*/
static void
nx_drop_party_indication(struct call *c, struct uni_msg *api)
{
struct uniapi_drop_party_indication *drop =
uni_msg_rptr(api, struct uniapi_drop_party_indication *);
if (uni_party_act_count(c, 0) == 0) {
if (uni_party_act_count(c, 1) == 0) {
if (c->cstate != CALLST_U11) {
make_drop_cause(c, &drop->drop.cause);
clear_callD(c);
}
uni_msg_destroy(api);
} else {
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_DROP_PARTY_indication, 0, api);
set_call_state(c, CALLST_N7);
}
} else {
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_DROP_PARTY_indication, 0, api);
}
}
/*
* Drop-party-ack.indication from Party-Control in any state.
*
* Q.2971:Call-Control-U 23/39
*/
static void
ux_drop_party_ack_indication(struct call *c, struct uni_msg *api)
{
struct uniapi_drop_party_ack_indication *drop =
uni_msg_rptr(api, struct uniapi_drop_party_ack_indication *);
if (uni_party_act_count(c, 2) == 0) {
if (c->cstate != CALLST_U11) {
make_drop_cause(c, &drop->drop.cause);
clear_callD(c);
}
uni_msg_destroy(api);
return;
}
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_DROP_PARTY_ACK_indication, 0, api);
}
/*
* Drop-party-ack.indication from Party-Control in any state.
*
* Q.2971:Call-Control-N 23/39
*/
static void
nx_drop_party_ack_indication(struct call *c, struct uni_msg *api)
{
struct uniapi_drop_party_ack_indication *drop =
uni_msg_rptr(api, struct uniapi_drop_party_ack_indication *);
if (uni_party_act_count(c, 0) == 0) {
if (uni_party_act_count(c, 1) == 0) {
if (c->cstate != CALLST_U11) {
make_drop_cause(c, &drop->drop.cause);
clear_callD(c);
}
uni_msg_destroy(api);
} else {
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_DROP_PARTY_ACK_indication, 0, api);
set_call_state(c, CALLST_N7);
}
} else {
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_DROP_PARTY_ACK_indication, 0, api);
}
}
/*
* Add-party-rej.indication from Party-Control in any state.
*
* Q.2971:Call-Control-U 23/39
*/
static void
ux_add_party_rej_indication(struct call *c, struct uni_msg *api)
{
struct uniapi_add_party_rej_indication *rej =
uni_msg_rptr(api, struct uniapi_add_party_rej_indication *);
if (uni_party_act_count(c, 2) == 0) {
if (c->cstate != CALLST_U11) {
make_drop_cause(c, &rej->rej.cause);
clear_callD(c);
}
uni_msg_destroy(api);
return;
}
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_ADD_PARTY_REJ_indication, 0, api);
}
/*
* Add-party-rej.indication from Party-Control in any state.
*
* Q.2971:Call-Control-N 23/39
*/
static void
nx_add_party_rej_indication(struct call *c, struct uni_msg *api)
{
struct uniapi_add_party_rej_indication *rej =
uni_msg_rptr(api, struct uniapi_add_party_rej_indication *);
if (uni_party_act_count(c, 0) == 0) {
if (uni_party_act_count(c, 1) == 0) {
if (c->cstate != CALLST_U11) {
make_drop_cause(c, &rej->rej.cause);
clear_callD(c);
}
uni_msg_destroy(api);
} else {
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_ADD_PARTY_REJ_indication, 0, api);
set_call_state(c, CALLST_N7);
}
} else {
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_ADD_PARTY_REJ_indication, 0, api);
}
}
/*
* Add-party.request from API in U4 or U10
*
* Q.2971:Call-Control-U 9-10/39 (U4)
* Q.2971:Call-Control-U 21/39 (U10)
* Q.2971:Call-Control-N 12/39 (N7)
* Q.2971:Call-Control-N 22/39 (N10)
*/
static void
unx_add_party_request(struct call *c, struct uni_msg *msg, uint32_t cookie)
{
struct uniapi_add_party_request *add =
uni_msg_rptr(msg, struct uniapi_add_party_request *);
struct party *p;
if (IE_ISGOOD(add->add.epref)) {
if (add->add.epref.flag != 0) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_BAD_IE, cookie);
return;
}
p = uni_find_partyx(c, add->add.epref.epref, 1);
if (p != NULL) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_EPREF_INUSE, cookie);
return;
}
} else if (!IE_ISPRESENT(add->add.epref)) {
allocate_epref(c, &add->add.epref);
if (!IE_ISPRESENT(add->add.epref)) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_EPREF_INUSE, cookie);
return;
}
} else {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_BAD_IE, cookie);
return;
}
if ((p = uni_create_partyx(c, add->add.epref.epref, 1, cookie)) == NULL) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_NOMEM, cookie);
return;
}
uni_enq_party(p, SIGP_ADD_PARTY_request, cookie, msg, NULL);
}
/*
* Add-party-ack.request from API in U10/N10
*
* Q.2971:Call-Control-U 21/39
* Q.2971:Call-Control-N 22/39
*/
static void
un10_add_party_ack_request(struct call *c, struct uni_msg *msg, uint32_t cookie)
{
struct uniapi_add_party_ack_request *ack =
uni_msg_rptr(msg, struct uniapi_add_party_ack_request *);
struct party *p;
if (!IE_ISGOOD(ack->ack.epref)) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_BAD_IE, cookie);
return;
}
if (ack->ack.epref.flag != 1) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_BAD_IE, cookie);
return;
}
if ((p = uni_find_partyx(c, ack->ack.epref.epref, 0)) == NULL) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_BAD_PARTY, cookie);
return;
}
uni_enq_party(p, SIGP_ADD_PARTY_ACK_request, cookie, msg, NULL);
}
/*
* Party-alerting.request from API in U7/U8/U10
*
* Q.2971:Call-Control-U 14/39 U7
* Q.2971:Call-Control-U 15/39 U8
* Q.2971:Call-Control-U 21/39 U10
* Q.2971:Call-Control-N 8/39 N4
* Q.2971:Call-Control-N 22/39 N10
*/
static void
unx_party_alerting_request(struct call *c, struct uni_msg *msg, uint32_t cookie)
{
struct uniapi_party_alerting_request *alert =
uni_msg_rptr(msg, struct uniapi_party_alerting_request *);
struct party *p;
if (!IE_ISGOOD(alert->alert.epref)) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_BAD_IE, cookie);
return;
}
if (alert->alert.epref.flag != 1) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_BAD_IE, cookie);
return;
}
if ((p = uni_find_partyx(c, alert->alert.epref.epref, 0)) == NULL) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_BAD_PARTY, cookie);
return;
}
uni_enq_party(p, SIGP_PARTY_ALERTING_request, cookie, msg, NULL);
}
/*
* Add-party-rej.request from API in U7/U8/U10/N4/N10
*
* Q.2971:Call-Control-U 14/39 U7
* Q.2971:Call-Control-U 15/39 U8
* Q.2971:Call-Control-U 21/39 U10
* Q.2971:Call-Control-N 8/39 N4
* Q.2971:Call-Control-N 22/39 N10
*/
static void
unx_add_party_rej_request(struct call *c, struct uni_msg *msg, uint32_t cookie)
{
struct uniapi_add_party_rej_request *rej =
uni_msg_rptr(msg, struct uniapi_add_party_rej_request *);
struct party *p;
if (!IE_ISGOOD(rej->rej.epref)) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_BAD_IE, cookie);
return;
}
if (rej->rej.epref.flag != 1) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_BAD_IE, cookie);
return;
}
if ((p = uni_find_partyx(c, rej->rej.epref.epref, 0)) == NULL) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_BAD_PARTY, cookie);
return;
}
uni_enq_party(p, SIGP_ADD_PARTY_REJ_request, cookie, msg, NULL);
}
/*
* Drop-party.request from API in U1-U10
*
* Q.2971:Call-Control-U 21/39 U10
* Q.2971:Call-Control-U 26/39 U1-U9
* Q.2971:Call-Control-N 22/39 N10
* Q.2971:Call-Control-N 27/39 N1-N9
*/
static void
unx_drop_party_request(struct call *c, struct uni_msg *msg, uint32_t cookie)
{
struct uniapi_drop_party_request *drop =
uni_msg_rptr(msg, struct uniapi_drop_party_request *);
struct party *p;
if (!IE_ISGOOD(drop->drop.epref)) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_BAD_IE, cookie);
return;
}
if ((p = uni_find_partyx(c, drop->drop.epref.epref, !drop->drop.epref.flag)) == NULL) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_BAD_PARTY, cookie);
return;
}
uni_enq_party(p, SIGP_DROP_PARTY_request, cookie, msg, NULL);
}
/*
* Drop-party-ack.request from API in U1-U10
*
* Q.2971:Call-Control-U 21/39 U10
* Q.2971:Call-Control-U 26/39 U1-U9
* Q.2971:Call-Control-N 22/39 N10
* Q.2971:Call-Control-N 27/39 N1-N9
*/
static void
unx_drop_party_ack_request(struct call *c, struct uni_msg *msg,
uint32_t cookie)
{
struct uniapi_drop_party_ack_request *ack =
uni_msg_rptr(msg, struct uniapi_drop_party_ack_request *);
struct party *p;
if (!IE_ISGOOD(ack->ack.epref)) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_BAD_IE, cookie);
return;
}
if ((p = uni_find_partyx(c, ack->ack.epref.epref, !ack->ack.epref.flag)) == NULL) {
uni_msg_destroy(msg);
uniapi_call_error(c, UNIAPI_ERROR_BAD_PARTY, cookie);
return;
}
uni_enq_party(p, SIGP_DROP_PARTY_ACK_request, cookie, msg, NULL);
}
/*
* ADD PARTY in U7/U8/U10
*
* Q.2971:Call-Control-U 14/39 U7
* Q.2971:Call-Control-U 15/39 U8
* Q.2971:Call-Control-U 21/39 U10
* Q.2971:Call-Control-N 8/39 N4
* Q.2971:Call-Control-N 21/39 N10
*
* Body already decoded
* XXX check EPREF flag
*/
static void
unx_add_party(struct call *c, struct uni_msg *m, struct uni_all *u,
int legal)
{
struct uni_all *resp;
struct uni_ierr *e1;
struct party *p = NULL;
enum verify vfy;
uni_mandate_epref(c->uni, &u->u.add_party.epref);
MANDATE_IE(c->uni, u->u.add_party.called, UNI_IE_CALLED);
/*
* Do part of the verify handish: according to 9.5.7.2 we must send
* an ADD_PARTY_REJ if mandatory IEs are bad or missing instead of
* clearing the call. But we must send a STATUS, if it is the EPREF!
*/
if (IE_ISGOOD(u->u.add_party.epref)) {
c->uni->cause.u.ie.len = 0;
FOREACH_ERR(e1, c->uni) {
if (e1->err == UNI_IERR_MIS) {
MK_IE_CAUSE(c->uni->cause, UNI_CAUSE_LOC_USER,
UNI_CAUSE_MANDAT);
goto rej;
}
}
FOREACH_ERR(e1, c->uni) {
if (e1->man && e1->ie != UNI_IE_EPREF &&
e1->act == UNI_IEACT_DEFAULT) {
MK_IE_CAUSE(c->uni->cause, UNI_CAUSE_LOC_USER,
UNI_CAUSE_IE_INV);
rej:
uni_vfy_collect_ies(c->uni);
if ((resp = UNI_ALLOC()) != NULL) {
MK_MSG_RESP(resp, UNI_ADD_PARTY_REJ,
&u->u.hdr.cref);
MK_IE_EPREF(resp->u.add_party_rej.epref,
u->u.add_party.epref.epref,
!u->u.add_party.epref.flag);
resp->u.add_party_rej.cause =
c->uni->cause;
unx_send_add_party_rej(c, resp);
}
goto ignore;
}
}
p = uni_find_partyx(c, u->u.add_party.epref.epref,
u->u.add_party.epref.flag);
}
vfy = uni_verify(c->uni, u->u.hdr.act);
switch (vfy) {
case VFY_CLR:
uni_vfy_collect_ies(c->uni);
clear_callD(c);
goto ignore;
case VFY_RAIM:
case VFY_RAI:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate), &u->u.add_party.epref,
p ? p->state : UNI_EPSTATE_NULL);
/* FALLTHRU */
case VFY_I:
goto ignore;
case VFY_RAP:
case VFY_RAPU:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate), &u->u.add_party.epref,
UNI_EPSTATE_ADD_RCVD);
case VFY_OK:
/* FALLTHRU */
break;
}
if (!legal) {
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&u->u.add_party.epref, -1);
return;
}
if (IE_ISGOOD(u->u.add_party.epref) && p == NULL &&
u->u.add_party.epref.flag) {
IE_SETERROR(u->u.add_party.epref);
UNI_SAVE_IERR(&c->uni->cx, UNI_IE_EPREF,
u->u.add_party.epref.h.act, UNI_IERR_BAD);
}
if (!IE_ISGOOD(u->u.add_party.epref)) {
/* 9.5.3.2.2 */
if (vfy == VFY_OK) {
MK_IE_CAUSE(c->uni->cause, UNI_CAUSE_LOC_USER,
UNI_CAUSE_IE_INV);
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate), NULL, 0);
}
goto ignore;
}
if (p == NULL && (p = uni_create_party(c, &u->u.add_party.epref))
== NULL)
goto ignore;
uni_enq_party(p, SIGP_ADD_PARTY, 0, m, u);
return;
ignore:
uni_msg_destroy(m);
UNI_FREE(u);
}
/*
* ADD PARTY ACKNOWLEDGE
*
* Q.2971:Call-Control-U 21/39 U10
* Q.2971:Call-Control-N 15/39 N8
* Q.2971:Call-Control-N 22/39 N10
*/
static void
un10n8_add_party_ack(struct call *c, struct uni_msg *m, struct uni_all *u,
int legal)
{
struct party *p = NULL;
if (IE_ISGOOD(u->u.add_party_ack.epref)) {
if (u->u.add_party_ack.epref.flag == 0) {
IE_SETERROR(u->u.add_party_ack.epref);
UNI_SAVE_IERR(&c->uni->cx, UNI_IE_EPREF,
u->u.add_party_ack.epref.h.act, UNI_IERR_BAD);
} else {
p = uni_find_partyx(c, u->u.add_party_ack.epref.epref, 1);
if (p == NULL) {
respond_drop_party_ack(c,
&u->u.add_party_ack.epref,
UNI_CAUSE_ENDP_INV);
goto ignore;
}
}
}
uni_mandate_epref(c->uni, &u->u.add_party_ack.epref);
switch (uni_verify(c->uni, u->u.hdr.act)) {
case VFY_CLR:
uni_vfy_collect_ies(c->uni);
clear_callD(c);
goto ignore;
case VFY_RAIM:
case VFY_RAI:
report:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate), &u->u.add_party_ack.epref,
p ? p->state : UNI_EPSTATE_NULL);
case VFY_I:
goto ignore;
case VFY_RAP:
case VFY_RAPU:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate), &u->u.add_party_ack.epref,
p ? UNI_EPSTATE_ACTIVE : UNI_EPSTATE_NULL);
if (!IE_ISGOOD(u->u.party_alerting.epref))
/* See below */
goto ignore;
break;
case VFY_OK:
if (!IE_ISGOOD(u->u.party_alerting.epref))
/* this happens when the EPREF has bad format.
* The rules require us the message to be ignored
* (9.5.3.2.2e) and to report status.
*/
goto report;
break;
}
if (legal) {
/* p is != NULL here */
uni_enq_party(p, SIGP_ADD_PARTY_ACK, 0, m, u);
return;
}
if (p == NULL)
/* Q.2971 9.5.3.2.3a) */
respond_drop_party_ack(c, &u->u.add_party_ack.epref,
UNI_CAUSE_ENDP_INV);
else
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&u->u.add_party_ack.epref, p->state);
ignore:
uni_msg_destroy(m);
UNI_FREE(u);
}
/*
* Make the EPREF action default
*/
static void
default_act_epref(struct uni *uni, struct uni_ie_epref *epref)
{
struct uni_ierr *e;
FOREACH_ERR(e, uni)
if (e->ie == UNI_IE_EPREF) {
e->act = UNI_IEACT_DEFAULT;
break;
}
epref->h.act = UNI_IEACT_DEFAULT;
}
/*
* PARTY ALERTING message
*
* Q.2971:Call-Control-U 9/39 U4
* Q.2971:Call-Control-U 21/39 U10
* Q.2971:Call-Control-N 12/39 N7
* Q.2971:Call-Control-N 15/39 N8
* Q.2971:Call-Control-N 22/39 N10
*/
static void
unx_party_alerting(struct call *c, struct uni_msg *m, struct uni_all *u,
int legal)
{
struct party *p = NULL;
if (IE_ISGOOD(u->u.party_alerting.epref)) {
if (u->u.party_alerting.epref.flag == 0) {
IE_SETERROR(u->u.party_alerting.epref);
UNI_SAVE_IERR(&c->uni->cx, UNI_IE_EPREF,
u->u.party_alerting.epref.h.act, UNI_IERR_BAD);
} else {
p = uni_find_partyx(c, u->u.party_alerting.epref.epref, 1);
if (p == NULL) {
respond_drop_party_ack(c,
&u->u.party_alerting.epref,
UNI_CAUSE_ENDP_INV);
goto ignore;
}
}
}
uni_mandate_epref(c->uni, &u->u.party_alerting.epref);
switch (uni_verify(c->uni, u->u.hdr.act)) {
case VFY_CLR:
uni_vfy_collect_ies(c->uni);
clear_callD(c);
goto ignore;
case VFY_RAIM:
case VFY_RAI:
report:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate), &u->u.party_alerting.epref,
p ? p->state : UNI_EPSTATE_NULL);
case VFY_I:
goto ignore;
case VFY_RAP:
case VFY_RAPU:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate), &u->u.party_alerting.epref,
p ? UNI_EPSTATE_ALERT_RCVD : UNI_EPSTATE_NULL);
if (!IE_ISGOOD(u->u.party_alerting.epref))
/* See below */
goto ignore;
break;
case VFY_OK:
if (!IE_ISGOOD(u->u.party_alerting.epref))
/* The rules require us the message to be ignored
* (9.5.3.2.2e) and to report status.
*/
goto report;
break;
}
if (legal) {
/* p is != NULL here */
uni_enq_party(p, SIGP_PARTY_ALERTING, 0, m, u);
return;
}
if (p == NULL)
/* Q.2971 9.5.3.2.3a) */
respond_drop_party_ack(c, &u->u.party_alerting.epref,
UNI_CAUSE_ENDP_INV);
else
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&u->u.party_alerting.epref, p->state);
ignore:
uni_msg_destroy(m);
UNI_FREE(u);
}
/*
* Handle a bad/missing cause in a DROP_PARTY_ACK or ADD_PARTY_REJ
*
* If the IE is missing or bad and the action is defaulted handle as
* cause #1 according to 9.5.7.1/2.
* Otherwise keep the IE.
*/
static void
handle_bad_drop_cause(struct call *c, struct uni_ie_cause *cause, int mkcause)
{
if (IE_ISGOOD(*cause))
return;
if (!IE_ISPRESENT(*cause)) {
/* 9.5.7.1 */
/* cannot make cause here because we need the 96 error */
uni_vfy_remove_cause(c->uni);
return;
}
if (cause->h.act != UNI_IEACT_DEFAULT)
return;
/* 9.5.7.2 */
uni_vfy_remove_cause(c->uni);
if (mkcause)
MK_IE_CAUSE(*cause, UNI_CAUSE_LOC_USER, UNI_CAUSE_UNSPEC);
}
/*
* ADD PARTY REJ from party control
* Q.2971:Call-Control-U 21/39
* Q.2971:Call-Control-U 24/39
*/
static void
unx_send_add_party_rej(struct call *c, struct uni_all *u)
{
if (uni_party_act_count(c, 2) == 0) {
if (c->cstate != CALLST_U11 && c->cstate != CALLST_N12) {
c->uni->cause = u->u.add_party_rej.cause;
clear_callD(c);
}
} else
(void)uni_send_output(u, c->uni);
UNI_FREE(u);
}
/*
* ADD_PARTY_REJECT in U4/U10
*
* Q.2971:Call-Control-U 9/39 U4
* Q.2971:Call-Control-U 21/39 U10
* Q.2971:Call-Control-N 12/39 N7
* Q.2971:Call-Control-N 15/39 N8
* Q.2971:Call-Control-N 22/39 N10
*/
static void
unx_add_party_rej(struct call *c, struct uni_msg *m, struct uni_all *u,
int legal)
{
struct uni_add_party_rej *ar = &u->u.add_party_rej;
struct party *p;
if (IE_ISGOOD(ar->epref)) {
p = uni_find_partyx(c, ar->epref.epref, ar->epref.flag);
if (p == NULL)
goto ignore;
if (legal) {
handle_bad_drop_cause(c, &ar->cause, 0);
uni_vfy_remove_unknown(c->uni);
switch (uni_verify(c->uni, u->u.hdr.act)) {
case VFY_CLR:
goto clear;
case VFY_RAIM:
case VFY_RAI:
uni_respond_status_verify(c->uni,
&u->u.hdr.cref, map_callstate(c->cstate),
&ar->epref, p->state);
case VFY_I:
goto ignore;
case VFY_RAPU:
uni_vfy_collect_ies(c->uni);
break;
case VFY_RAP:
uni_respond_status_verify(c->uni,
&u->u.hdr.cref, map_callstate(c->cstate),
&ar->epref, p->state);
case VFY_OK:
break;
}
uni_enq_party(p, SIGP_ADD_PARTY_REJ, 0, m, u);
return;
}
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&ar->epref, -1);
return;
}
/* Q.2971: 9.5.3.2.1 last paragraph
* 9.5.3.2.2 second to last paragraph
* Make the action indicator default.
*/
default_act_epref(c->uni, &ar->epref);
if (!IE_ISPRESENT(ar->epref))
uni_mandate_ie(c->uni, UNI_IE_EPREF);
(void)uni_verify(c->uni, u->u.hdr.act);
clear:
uni_vfy_collect_ies(c->uni);
clear_callD(c);
ignore:
uni_msg_destroy(m);
UNI_FREE(u);
}
/*
* DROP_PARTY
*
* Q.2971:Call-Control-U 26/39 Ux
* Q.2971:Call-Control-U 21/39 U10
* Q.2971:Call-Control-N 27/39 Nx
* Q.2971:Call-Control-N 22/39 N10
*/
static void
unx_drop_party(struct call *c, struct uni_msg *m, struct uni_all *u, int legal)
{
struct uni_drop_party *dp = &u->u.drop_party;
struct party *p;
struct uni_ierr *e;
if (IE_ISGOOD(dp->epref)) {
p = uni_find_partyx(c, dp->epref.epref, dp->epref.flag);
if (p == NULL) {
respond_drop_party_ack(c, &dp->epref,
UNI_CAUSE_ENDP_INV);
goto ignore;
}
handle_bad_drop_cause(c, &dp->cause, 0);
uni_vfy_remove_unknown(c->uni);
switch (uni_verify(c->uni, u->u.hdr.act)) {
case VFY_CLR:
goto clear;
case VFY_RAIM:
case VFY_RAI:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate),
&u->u.drop_party.epref, p->state);
case VFY_I:
goto ignore;
case VFY_RAPU:
uni_vfy_collect_ies(c->uni);
break;
case VFY_RAP:
uni_respond_status_verify(c->uni, &u->u.hdr.cref,
map_callstate(c->cstate),
&dp->epref, UNI_EPSTATE_DROP_RCVD);
case VFY_OK:
break;
}
if (legal) {
uni_enq_party(p, SIGP_DROP_PARTY, 0, m, u);
return;
}
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP, &dp->epref, -1);
goto ignore;
}
/* Q.2971: 9.5.3.2.1 last paragraph
* 9.5.3.2.2 second to last paragraph
* Make the action indicator default.
*/
FOREACH_ERR(e, c->uni)
if (e->ie == UNI_IE_EPREF) {
e->act = UNI_IEACT_DEFAULT;
break;
}
dp->epref.h.act = UNI_IEACT_DEFAULT;
if (!IE_ISPRESENT(dp->epref))
uni_mandate_ie(c->uni, UNI_IE_EPREF);
(void)uni_verify(c->uni, u->u.hdr.act);
clear:
uni_vfy_collect_ies(c->uni);
clear_callD(c);
uni_msg_destroy(m);
UNI_FREE(u);
return;
ignore:
uni_msg_destroy(m);
UNI_FREE(u);
}
/*
* DROP_PARTY_ACK
*
* Q.2971:Call-Control-U 26/39 Ux
* Q.2971:Call-Control-U 21/39 U10
* Q.2971:Call-Control-N 27/39 Nx
* Q.2971:Call-Control-N 22/39 N10
*/
static void
unx_drop_party_ack(struct call *c, struct uni_msg *m, struct uni_all *u,
int legal)
{
struct party *p;
struct uni_drop_party_ack *ack = &u->u.drop_party_ack;
if (IE_ISGOOD(u->u.drop_party_ack.epref)) {
p = uni_find_partyx(c, ack->epref.epref, ack->epref.flag);
if (p != NULL) {
handle_bad_drop_cause(c, &ack->cause, 1);
uni_vfy_remove_unknown(c->uni);
switch (uni_verify(c->uni, u->u.hdr.act)) {
case VFY_CLR:
goto clear;
case VFY_RAIM:
case VFY_RAI:
uni_respond_status_verify(c->uni,
&u->u.hdr.cref, map_callstate(c->cstate),
&ack->epref, p->state);
case VFY_I:
goto ignore;
case VFY_RAP:
uni_respond_status_verify(c->uni,
&u->u.hdr.cref, map_callstate(c->cstate),
&ack->epref, UNI_EPSTATE_NULL);
case VFY_RAPU:
case VFY_OK:
break;
}
if (legal) {
uni_enq_party(p, SIGP_DROP_PARTY_ACK, 0, m, u);
return;
}
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&ack->epref, -1);
}
goto ignore;
}
/* Q.2971: 9.5.3.2.1 last paragraph
* 9.5.3.2.2 second to last paragraph
*/
(void)uni_verify(c->uni, u->u.hdr.act);
MK_IE_CAUSE(c->uni->cause, UNI_CAUSE_LOC_USER, UNI_CAUSE_IE_INV);
clear:
uni_vfy_collect_ies(c->uni);
clear_callD(c);
uni_msg_destroy(m);
UNI_FREE(u);
return;
ignore:
uni_msg_destroy(m);
UNI_FREE(u);
}
/**********************************************************************/
/*
* Bad or unrecognized message.
*
* Q.2971:Call-Control-U 35/39
*/
void
uni_bad_message(struct call *c, struct uni_all *u, u_int cause,
struct uni_ie_epref *epref, int ps)
{
struct uni_all *resp;
struct party *p;
if ((u->u.hdr.act == UNI_MSGACT_CLEAR &&
(c->cstate == CALLST_U11 ||
c->cstate == CALLST_U12 ||
c->cstate == CALLST_N11 ||
c->cstate == CALLST_N12)) ||
u->u.hdr.act == UNI_MSGACT_IGNORE)
return;
MK_IE_CAUSE(c->uni->cause, UNI_CAUSE_LOC_USER, cause);
ADD_CAUSE_MTYPE(c->uni->cause, u->mtype);
if (u->u.hdr.act == UNI_MSGACT_CLEAR) {
clear_callD(c);
return;
}
/*
* Send STATUS
*/
if ((resp = UNI_ALLOC()) != NULL) {
MK_MSG_RESP(resp, UNI_STATUS, &u->u.hdr.cref);
MK_IE_CALLSTATE(resp->u.status.callstate,
map_callstate(c->cstate));
resp->u.status.cause = c->uni->cause;
if (epref != NULL && IE_ISGOOD(*epref)) {
MK_IE_EPREF(resp->u.status.epref, epref->epref, !epref->flag);
if (ps == -1) {
p = uni_find_party(c, epref);
if (p == NULL)
ps = UNI_EPSTATE_NULL;
else
ps = p->state;
}
MK_IE_EPSTATE(resp->u.status.epstate, ps);
}
(void)uni_send_output(resp, c->uni);
UNI_FREE(resp);
}
}
/**********************************************************************/
/*
* Unknown message in any state.
*
* Q.2971:Call-Control 35/39
* Q.2971:Call-Control 36/39
*/
static void
unx_unknown(struct call *c, struct uni_msg *m, struct uni_all *u)
{
/*
* Unrecognized message. Cannot call verify here, because
* it doesn't know about unrecognized messages.
*/
if (u->u.hdr.act == UNI_MSGACT_CLEAR) {
MK_IE_CAUSE(c->uni->cause, UNI_CAUSE_LOC_USER,
UNI_CAUSE_MTYPE_NIMPL);
ADD_CAUSE_MTYPE(c->uni->cause, u->mtype);
clear_callD(c);
} else if(u->u.hdr.act == UNI_MSGACT_IGNORE) {
;
} else {
(void)uni_decode_body(m, u, &c->uni->cx);
uni_bad_message(c, u, UNI_CAUSE_MTYPE_NIMPL,
&u->u.unknown.epref, -1);
}
uni_msg_destroy(m);
UNI_FREE(u);
}
/**********************************************************************/
void
uni_sig_call(struct call *c, enum call_sig sig, uint32_t cookie,
struct uni_msg *msg, struct uni_all *u)
{
if (sig >= SIGC_END) {
VERBOSE(c->uni, UNI_FAC_ERR, 1,
"Signal %d outside of range to Call-Control", sig);
if (msg)
uni_msg_destroy(msg);
if (u)
UNI_FREE(u);
return;
}
VERBOSE(c->uni, UNI_FAC_CALL, 1, "Signal %s in state %s of call %u/%s"
"; cookie %u", call_sigs[sig], callstates[c->cstate].name, c->cref,
c->mine ? "mine" : "his", cookie);
switch (sig) {
case SIGC_LINK_RELEASE_indication:
if (c->cstate == CALLST_U10 || c->cstate == CALLST_N10)
/* Q.2971:Call-Control-U 36/39 */
/* Q.2971:Call-Control-N 20/39 */
un10_link_release_indication(c);
else
/* Q.2971:Call-Control-U 36/39 */
/* Q.2971:Call-Control-N 37/39 */
unx_link_release_indication(c);
break;
case SIGC_LINK_ESTABLISH_ERROR_indication:
if (c->cstate != CALLST_U10 && c->cstate != CALLST_N10) {
VERBOSE(c->uni, UNI_FAC_ERR, 1,
"link-establish-error.indication in cs=%s",
callstates[c->cstate].name);
break;
}
/* Q.2971:Call-Control-U 19/39 */
/* Q.2971:Call-Control-N 20/39 */
un10_link_establish_error_indication(c);
break;
case SIGC_LINK_ESTABLISH_indication:
switch (c->cstate) {
case CALLST_U1: case CALLST_N1:
case CALLST_U3: case CALLST_N3:
case CALLST_U4: case CALLST_N4:
case CALLST_U6: case CALLST_N6:
case CALLST_U7: case CALLST_N7:
case CALLST_U8: case CALLST_N8:
case CALLST_U9: case CALLST_N9:
/* Q.2971:Call-Control-U 36/39 */
/* Q.2971:Call-Control-N 37/39 */
unx_link_establish_indication(c);
break;
case CALLST_U10: case CALLST_N10:
/* Q.2971:Call-Control-U 19/39 */
/* Q.2971:Call-Control-N 20/39 */
un10_link_establish_indication(c);
break;
case CALLST_U11: case CALLST_N11:
case CALLST_U12: case CALLST_N12:
/* Q.2971:Call-Control-U 36/39 */
/* Q.2971:Call-Control-N 37/39 */
break;
default:
VERBOSE(c->uni, UNI_FAC_ERR, 1,
"link-establish.indication in cs=%s",
callstates[c->cstate].name);
}
break;
case SIGC_LINK_ESTABLISH_confirm:
if (c->cstate != CALLST_U10 && c->cstate != CALLST_N10) {
VERBOSE(c->uni, UNI_FAC_ERR, 1,
"link-establish.confirm in cs=%s",
callstates[c->cstate].name);
break;
}
/* Q.2971:Call-Control-U 19/39 */
/* Q.2971:Call-Control-N 20/39 */
un10_link_establish_confirm(c);
break;
case SIGC_UNKNOWN:
/* Q.2971:Call-Control 35/39 */
/* Q.2971:Call-Control 36/39 */
unx_unknown(c, msg, u);
break;
case SIGC_SETUP:
if (c->cstate != CALLST_NULL) {
(void)uni_decode_body(msg, u, &c->uni->cx);
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&u->u.setup.epref, -1);
goto drop;
}
if (c->uni->proto == UNIPROTO_UNI40N)
/* Q.2971:Call-Control-N 4/39 */
un0_setup(c, msg, u, CALLST_N1);
else
/* Q.2971:Call-Control-U 4/39 */
un0_setup(c, msg, u, CALLST_U6);
break;
case SIGC_CALL_PROC:
if (c->cstate == CALLST_U1) {
/* Q.2971:Call-Control-U 6/39 */
u1n6_call_proc(c, msg, u, CALLST_U3);
break;
}
if (c->cstate == CALLST_N6) {
/* Q.2971:Call-Control-N 11/39 */
u1n6_call_proc(c, msg, u, CALLST_N9);
break;
}
(void)uni_decode_body(msg, u, &c->uni->cx);
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&u->u.call_proc.epref, -1);
goto drop;
case SIGC_ALERTING:
if (c->cstate == CALLST_U1 || c->cstate == CALLST_U3) {
/* Q.2971:Call-Control-U 37/39 (U1) */
/* Q.2971:Call-Control-U 7/39 (U3) */
unx_alerting(c, msg, u, CALLST_U4);
break;
}
if (c->cstate == CALLST_N6) {
/* Q.2971:Call-Control-N 9/39 (N6) */
/* Q.2971:Call-Control-N 17/39 (N9) */
unx_alerting(c, msg, u, CALLST_N7);
break;
}
(void)uni_decode_body(msg, u, &c->uni->cx);
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&u->u.alerting.epref, -1);
goto drop;
case SIGC_CONNECT:
if (c->cstate == CALLST_U1 || c->cstate == CALLST_U3 ||
c->cstate == CALLST_U4) {
/* Q.2971:Call-Control-U 7-8/39 (U3) */
/* Q.2971:Call-Control-U 11/39 (U4) */
/* Q.2971:Call-Control-U 37/39 (U1) */
unx_connect(c, msg, u, CALLST_U10);
break;
}
if (c->cstate == CALLST_N6 || c->cstate == CALLST_N7 ||
c->cstate == CALLST_N9) {
/* Q.2971:Call-Control-N 9-10/39 (N6) */
/* Q.2971:Call-Control-N 14/39 (N7) */
/* Q.2971:Call-Control-N 17/39 (N9) */
unx_connect(c, msg, u, CALLST_N8);
break;
}
(void)uni_decode_body(msg, u, &c->uni->cx);
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&u->u.connect.epref, -1);
goto drop;
case SIGC_CONNECT_ACK:
if (c->cstate == CALLST_U8) {
/* Q.2971:Call-Control-U 15-16/39 */
u8_connect_ack(c, msg, u, CALLST_U10);
break;
}
if (c->cstate == CALLST_N10) {
/* Q.2971:Call-Control-N 18/39 */
n10_connect_ack(c, msg, u);
break;
}
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP, NULL, 0);
goto drop;
case SIGC_RELEASE:
switch (c->cstate) {
default:
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP, NULL, 0);
goto drop;
case CALLST_U11:
case CALLST_N12:
/* Q.2971:Call-Control-U 28/39 */
/* Q.2971:Call-Control-N 30/39 */
u11n12_release(c, msg, u);
break;
case CALLST_U1:
case CALLST_U3:
case CALLST_U4:
case CALLST_U6:
case CALLST_U7:
case CALLST_U8:
case CALLST_U9:
case CALLST_U10:
case CALLST_U12:
/* Q.2971:Call-Control-U 25/39 */
unx_release(c, msg, u, CALLST_U12);
break;
case CALLST_N1:
case CALLST_N3:
case CALLST_N4:
case CALLST_N6:
case CALLST_N7:
case CALLST_N8:
case CALLST_N9:
case CALLST_N10:
case CALLST_N11:
/* Q.2971:Call-Control-N 26/39 */
unx_release(c, msg, u, CALLST_N11);
break;
}
break;
case SIGC_RELEASE_COMPL:
/* Q.2971:Call-Control-U 25/39 */
/* Q.2971:Call-Control-N 26/39 */
unx_release_compl(c, msg, u);
break;
case SIGC_NOTIFY:
/* Q.2971:Call-Control-U 18/39 */
/* Q.2971:Call-Control-N 19/39 */
unx_notify(c, msg, u);
break;
case SIGC_STATUS:
if (c->cstate == CALLST_U11 || c->cstate == CALLST_U12 ||
c->cstate == CALLST_N11 || c->cstate == CALLST_N12) {
/* Q.2971:Call-Control-U 29/39 (U11) */
/* Q.2971:Call-Control-U 30/39 (U12) */
/* Q.2971:Call-Control-N 29/39 (N11) */
/* Q.2971:Call-Control-N 31/39 (N12) */
un11un12_status(c, msg, u);
break;
}
/* Q.2971:Call-Control-U 32/39 */
/* Q.2971:Call-Control-N 33/39 */
unx_status(c, msg, u);
break;
case SIGC_STATUS_ENQ:
/* Q.2971:Call-Control-U 31/39 */
/* Q.2971:Call-Control-N 32/39 */
unx_status_enq(c, msg, u);
break;
case SIGC_ADD_PARTY:
(void)uni_decode_body(msg, u, &c->uni->cx);
if (c->type != CALL_LEAF && c->type != CALL_ROOT) {
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&u->u.add_party.epref, UNI_EPSTATE_NULL);
goto drop;
}
switch (c->cstate) {
case CALLST_U7:
case CALLST_U8:
case CALLST_U10:
case CALLST_N4:
case CALLST_N10:
/* Q.2971:Call-Control-U 14/39 U7 */
/* Q.2971:Call-Control-U 15/39 U8 */
/* Q.2971:Call-Control-U 21/39 U10 */
/* Q.2971:Call-Control-N 8/39 N4 */
/* Q.2971:Call-Control-N 21/39 N10 */
unx_add_party(c, msg, u, 1);
break;
default:
unx_add_party(c, msg, u, 0);
goto drop;
}
break;
case SIGC_PARTY_ALERTING:
(void)uni_decode_body(msg, u, &c->uni->cx);
if (c->type != CALL_ROOT) {
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&u->u.party_alerting.epref, -1);
goto drop;
}
switch (c->cstate) {
default:
/* Q.2971 9.5.3.2.3a) */
unx_party_alerting(c, msg, u, 0);
break;
case CALLST_U4:
case CALLST_U10:
/* Q.2971:Call-Control-U 9/39 U4 */
/* Q.2971:Call-Control-U 21/39 U10 */
/* Q.2971:Call-Control-N 12/39 N7 */
/* Q.2971:Call-Control-N 15/39 N8 */
/* Q.2971:Call-Control-N 22/39 N10 */
unx_party_alerting(c, msg, u, 1);
break;
}
break;
case SIGC_ADD_PARTY_ACK:
(void)uni_decode_body(msg, u, &c->uni->cx);
if (c->type != CALL_ROOT) {
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&u->u.add_party_rej.epref, -1);
goto drop;
}
switch (c->cstate) {
case CALLST_U10:
/* Q.2971:Call-Control-U 21/39 U10 */
/* Q.2971:Call-Control-N 15/39 N8 */
/* Q.2971:Call-Control-N 22/39 N10 */
un10n8_add_party_ack(c, msg, u, 1);
break;
default:
/* Q.2971 9.5.3.2.3a) */
un10n8_add_party_ack(c, msg, u, 0);
break;
}
break;
case SIGC_ADD_PARTY_REJ:
(void)uni_decode_body(msg, u, &c->uni->cx);
if (c->type != CALL_ROOT) {
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&u->u.add_party_rej.epref, -1);
goto drop;
}
switch (c->cstate) {
case CALLST_U4:
case CALLST_U10:
case CALLST_N7:
case CALLST_N8:
case CALLST_N10:
/* Q.2971:Call-Control-U 9/39 U4 */
/* Q.2971:Call-Control-U 21/39 U10 */
/* Q.2971:Call-Control-N 12/39 N7 */
/* Q.2971:Call-Control-N 15/39 N8 */
/* Q.2971:Call-Control-N 22/39 N10 */
unx_add_party_rej(c, msg, u, 1);
break;
default:
/* Q.2971: 9.5.3.2.3b */
unx_add_party_rej(c, msg, u, 0);
break;
}
break;
case SIGC_DROP_PARTY:
(void)uni_decode_body(msg, u, &c->uni->cx);
if (c->type != CALL_ROOT && c->type != CALL_LEAF) {
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&u->u.drop_party.epref, -1);
goto drop;
}
switch (c->cstate) {
case CALLST_U11:
case CALLST_U12:
case CALLST_N11:
case CALLST_N12:
/* Q.2971:Call-Control-U 28/39 U11 */
/* Q.2971:Call-Control-U 30/39 U12 */
/* Q.2971:Call-Control-N 29/39 N11 */
/* Q.2971:Call-Control-N 30/39 N12 */
goto drop;
case CALLST_NULL:
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&u->u.drop_party.epref, UNI_EPSTATE_NULL);
goto drop;
case CALLST_U3:
case CALLST_N3:
/* L3MU_17_38 */
unx_drop_party(c, msg, u, 0);
break;
case CALLST_U8:
if (c->uni->sb_tb) {
/* L3MU_06_0[3-6] */
unx_drop_party(c, msg, u, 0);
break;
}
/* FALLTHRU */
default:
/* Q.2971:Call-Control-U 26/39 Ux */
/* Q.2971:Call-Control-U 21/39 U10 */
/* Q.2971:Call-Control-N 27/39 Nx */
/* Q.2971:Call-Control-N 21/39 N10 */
unx_drop_party(c, msg, u, 1);
break;
}
break;
case SIGC_DROP_PARTY_ACK:
(void)uni_decode_body(msg, u, &c->uni->cx);
if (c->type != CALL_ROOT && c->type != CALL_LEAF) {
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&u->u.drop_party_ack.epref, -1);
goto drop;
}
switch (c->cstate) {
case CALLST_U11:
case CALLST_U12:
/* Q.2971:Call-Control-U 28/39 U11 */
/* Q.2971:Call-Control-U 30/39 U12 */
/* Q.2971:Call-Control-N 29/39 N11 */
/* Q.2971:Call-Control-N 30/39 N12 */
goto drop;
case CALLST_NULL:
uni_bad_message(c, u, UNI_CAUSE_MSG_INCOMP,
&u->u.drop_party.epref, UNI_EPSTATE_NULL);
goto drop;
case CALLST_U4:
case CALLST_N4:
case CALLST_U7:
case CALLST_N7:
case CALLST_U8:
case CALLST_N8:
case CALLST_U10:
case CALLST_N10:
/* Q.2971:Call-Control-U 26/39 Ux */
/* Q.2971:Call-Control-U 21/39 U10 */
/* Q.2971:Call-Control-N 27/39 Nx */
/* Q.2971:Call-Control-N 22/39 N10 */
unx_drop_party_ack(c, msg, u, 1);
break;
default:
/* Q.2971 10.5 4th paragraph */
unx_drop_party_ack(c, msg, u, 0);
break;
}
break;
case SIGC_COBISETUP: /* XXX */
unx_unknown(c, msg, u);
break;
/*
* User signals
*/
case SIGC_SETUP_request:
if (c->cstate == CALLST_NULL) {
/* Q.2971:Call-Control-U 4/39 (U0) */
/* Q.2971:Call-Control-N 4/39 (N0) */
if (c->uni->proto == UNIPROTO_UNI40N)
un0_setup_request(c, msg, cookie, CALLST_N6);
else
un0_setup_request(c, msg, cookie, CALLST_U1);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1, "setup.request in cs=%s",
callstates[c->cstate].name);
uniapi_call_error(c, UNIAPI_ERROR_BAD_CALLSTATE, cookie);
uni_msg_destroy(msg);
break;
case SIGC_SETUP_response:
if (c->cstate == CALLST_U6 || c->cstate == CALLST_U9 ||
c->cstate == CALLST_U7) {
/* Q.2971:Call-Control-U 13/39 (U6) */
/* Q.2971:Call-Control-U 14/39 (U7) */
/* Q.2971:Call-Control-U 17/39 (U9) */
unx_setup_response(c, msg, cookie, CALLST_U8);
break;
}
if (c->cstate == CALLST_N1 || c->cstate == CALLST_N3 ||
c->cstate == CALLST_N4) {
/* Q.2971:Call-Control-N 39/39 (N1) */
/* Q.2971:Call-Control-N 7/39 (N3) */
/* Q.2971:Call-Control-N 8/39 (N4) */
unx_setup_response(c, msg, cookie, CALLST_N10);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1, "setup.response in cs=%s",
callstates[c->cstate].name);
uniapi_call_error(c, UNIAPI_ERROR_BAD_CALLSTATE, cookie);
uni_msg_destroy(msg);
break;
case SIGC_SETUP_COMPLETE_request:
if (c->cstate == CALLST_N8) {
/* Q.2971:Call-Control-N 15/39 (N8) */
n8_setup_compl_request(c, msg, cookie, CALLST_N10);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1, "setup_compl.request in cs=%s",
callstates[c->cstate].name);
uniapi_call_error(c, UNIAPI_ERROR_BAD_CALLSTATE, cookie);
uni_msg_destroy(msg);
break;
case SIGC_PROCEEDING_request:
if (c->cstate == CALLST_U6) {
/* Q.2971:Call-Control-U 12/39 (U6) */
u6n1_proceeding_request(c, msg, cookie, CALLST_U9);
break;
}
if (c->cstate == CALLST_N1) {
/* Q.2971:Call-Control-N 6/39 (N1) */
u6n1_proceeding_request(c, msg, cookie, CALLST_N3);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1, "proceeding.request in cs=%s",
callstates[c->cstate].name);
uniapi_call_error(c, UNIAPI_ERROR_BAD_CALLSTATE, cookie);
uni_msg_destroy(msg);
break;
case SIGC_ALERTING_request:
if (c->cstate == CALLST_U6 || c->cstate == CALLST_U9) {
/* Q.2971:Call-Control-U 13/39 (U6) */
/* Q.2971:Call-Control-U 17/39 (U9) */
unx_alerting_request(c, msg, cookie, CALLST_U7);
break;
}
if (c->cstate == CALLST_N1 || c->cstate == CALLST_N3) {
/* Q.2971:Call-Control-N 38/39 (N1) */
/* Q.2971:Call-Control-N 7/39 (N3) */
unx_alerting_request(c, msg, cookie, CALLST_N4);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1, "alerting.request in cs=%s",
callstates[c->cstate].name);
uniapi_call_error(c, UNIAPI_ERROR_BAD_CALLSTATE, cookie);
uni_msg_destroy(msg);
break;
case SIGC_RELEASE_request:
switch (c->cstate) {
case CALLST_U1:
case CALLST_U3:
case CALLST_U4:
case CALLST_U6:
case CALLST_U7:
case CALLST_U8:
case CALLST_U9:
case CALLST_U10:
/* Q.2971:Call-Control-U 27/39 */
unx_release_request(c, msg, cookie, CALLST_U11);
break;
case CALLST_N1:
case CALLST_N3:
case CALLST_N4:
case CALLST_N6:
case CALLST_N7:
case CALLST_N8:
case CALLST_N9:
case CALLST_N10:
/* Q.2971:Call-Control-N 28/39 */
unx_release_request(c, msg, cookie, CALLST_N12);
break;
case CALLST_U11:
case CALLST_U12:
case CALLST_N11:
case CALLST_N12:
case CALLST_NULL:
VERBOSE(c->uni, UNI_FAC_ERR, 1,
"release.request in cs=%s",
callstates[c->cstate].name);
uniapi_call_error(c, UNIAPI_ERROR_BAD_CALLSTATE,
cookie);
uni_msg_destroy(msg);
break;
}
break;
case SIGC_RELEASE_response:
if (c->cstate == CALLST_U6 || c->cstate == CALLST_U12 ||
c->cstate == CALLST_N1 || c->cstate == CALLST_N11) {
/* Q.2971:Call-Control-U 12/39 (U6) */
/* Q.2971:Call-Control-U 30/39 (U12) */
/* Q.2971:Call-Control-N 6/39 (N1) */
/* Q.2971:Call-Control-N 29/39 (N11) */
unx_release_response(c, msg, cookie);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1, "release.response in cs=%s",
callstates[c->cstate].name);
uniapi_call_error(c, UNIAPI_ERROR_BAD_CALLSTATE, cookie);
uni_msg_destroy(msg);
break;
case SIGC_NOTIFY_request:
/* Q.2971:Call-Control-U 18/39 */
/* Q.2971:Call-Control-N 19/39 */
unx_notify_request(c, msg, cookie);
break;
case SIGC_STATUS_ENQUIRY_request:
/* Q.2971:Call-Control-U 31/39 */
/* Q.2971:Call-Control-N 32/39 */
unx_status_enquiry_request(c, msg, cookie);
break;
case SIGC_ADD_PARTY_request:
if (c->cstate == CALLST_U4 || c->cstate == CALLST_U10 ||
c->cstate == CALLST_N7 || c->cstate == CALLST_N10) {
/* Q.2971:Call-Control-U 9-10/39 (U4) */
/* Q.2971:Call-Control-U 21/39 (U10) */
/* Q.2971:Call-Control-N 12/39 (N7) */
/* Q.2971:Call-Control-N 22/39 (N10) */
unx_add_party_request(c, msg, cookie);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1, "add-party.request in cs=%s",
callstates[c->cstate].name);
uniapi_call_error(c, UNIAPI_ERROR_BAD_CALLSTATE, cookie);
uni_msg_destroy(msg);
break;
case SIGC_PARTY_ALERTING_request:
if (c->cstate == CALLST_U7 || c->cstate == CALLST_U8 ||
c->cstate == CALLST_U10 ||
c->cstate == CALLST_N4 || c->cstate == CALLST_N10) {
/* Q.2971:Call-Control-U 14/39 U7 */
/* Q.2971:Call-Control-U 15/39 U8 */
/* Q.2971:Call-Control-U 21/39 U10 */
/* Q.2971:Call-Control-N 8/39 N4 */
/* Q.2971:Call-Control-N 22/39 N10 */
unx_party_alerting_request(c, msg, cookie);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1,
"party-alerting.request in cs=%s",
callstates[c->cstate].name);
uniapi_call_error(c, UNIAPI_ERROR_BAD_CALLSTATE, cookie);
uni_msg_destroy(msg);
break;
case SIGC_ADD_PARTY_ACK_request:
if (c->cstate == CALLST_U10 || c->cstate == CALLST_N10) {
/* Q.2971:Call-Control-U 21/39 (U10) */
/* Q.2971:Call-Control-N 22/39 (N10)*/
un10_add_party_ack_request(c, msg, cookie);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1,
"add-party-ack.request in cs=%s",
callstates[c->cstate].name);
uniapi_call_error(c, UNIAPI_ERROR_BAD_CALLSTATE, cookie);
uni_msg_destroy(msg);
break;
case SIGC_ADD_PARTY_REJ_request:
if (c->cstate == CALLST_U7 || c->cstate == CALLST_U8 ||
c->cstate == CALLST_U10 ||
c->cstate == CALLST_N4 || c->cstate == CALLST_N10) {
/* Q.2971:Call-Control-U 14/39 U7 */
/* Q.2971:Call-Control-U 15/39 U8 */
/* Q.2971:Call-Control-U 21/39 U10 */
/* Q.2971:Call-Control-N 8/39 N4 */
/* Q.2971:Call-Control-N 22/39 N10 */
unx_add_party_rej_request(c, msg, cookie);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1,
"add-party-rej.request in cs=%s",
callstates[c->cstate].name);
uniapi_call_error(c, UNIAPI_ERROR_BAD_CALLSTATE, cookie);
uni_msg_destroy(msg);
break;
case SIGC_DROP_PARTY_request:
if (c->cstate != CALLST_U11 && c->cstate != CALLST_U12 &&
c->cstate != CALLST_N11 && c->cstate != CALLST_N12 &&
c->cstate != CALLST_NULL) {
/* Q.2971:Call-Control-U 21/39 U10 */
/* Q.2971:Call-Control-U 26/39 U1-U9 */
/* Q.2971:Call-Control-N 22/39 N10 */
/* Q.2971:Call-Control-N 27/39 N1-N9 */
unx_drop_party_request(c, msg, cookie);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1, "drop-party.request in cs=%s",
callstates[c->cstate].name);
uniapi_call_error(c, UNIAPI_ERROR_BAD_CALLSTATE, cookie);
uni_msg_destroy(msg);
break;
case SIGC_DROP_PARTY_ACK_request:
if (c->cstate != CALLST_U11 && c->cstate != CALLST_U12 &&
c->cstate != CALLST_N11 && c->cstate != CALLST_N12 &&
c->cstate != CALLST_NULL) {
/* Q.2971:Call-Control-U 21/39 U10 */
/* Q.2971:Call-Control-U 26/39 U1-U9 */
/* Q.2971:Call-Control-N 22/39 N10 */
/* Q.2971:Call-Control-N 27/39 N1-N9 */
unx_drop_party_ack_request(c, msg, cookie);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1,
"drop-party-ack.request in cs=%s",
callstates[c->cstate].name);
uniapi_call_error(c, UNIAPI_ERROR_BAD_CALLSTATE, cookie);
uni_msg_destroy(msg);
break;
case SIGC_ABORT_CALL_request:
{
struct uni *uni = c->uni;
uni_destroy_call(c, 0);
uniapi_uni_error(uni, UNIAPI_OK, cookie, UNI_CALLSTATE_U0);
break;
}
/*
* Timers
*/
case SIGC_T301:
if (c->cstate == CALLST_U4 || c->cstate == CALLST_N7) {
/* Q.2971:Call-Control-U Missing */
/* Q.2971:Call-Control-N 14/39 */
u4n7_t301(c);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1, "T301 in cs=%s",
callstates[c->cstate].name);
break;
case SIGC_T303:
if (c->cstate == CALLST_U1 || c->cstate == CALLST_N6) {
/* Q.2971:Call-Control-U 6/39 */
/* Q.2971:Call-Control-N 11/39 */
u1n6_t303(c);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1, "T303 in cs=%s",
callstates[c->cstate].name);
break;
case SIGC_T308:
if (c->cstate == CALLST_U11 || c->cstate == CALLST_N12) {
/* Q.2971:Call-Control-U 28/39 */
/* Q.2971:Call-Control-N 30/39 */
u11n12_t308(c);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1, "T308 in cs=%s",
callstates[c->cstate].name);
break;
case SIGC_T310:
if (c->cstate == CALLST_U3 || c->cstate == CALLST_N9) {
/* Q.2971:Call-Control-U 7/39 */
/* Q.2971:Call-Control-N 17/39 */
u3n9_t310(c);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1, "T310 in cs=%s",
callstates[c->cstate].name);
break;
case SIGC_T313:
if (c->cstate == CALLST_U8) {
/* Q.2971:Call-Control-U 15/39 */
u8_t313(c);
break;
}
VERBOSE(c->uni, UNI_FAC_ERR, 1, "T313 in cs=%s",
callstates[c->cstate].name);
break;
case SIGC_T322:
/* Q.2971:Call-Control-U 34/39 */
/* Q.2971:Call-Control-N 35/39 */
unx_t322(c);
break;
case SIGC_CALL_DELETE:
CALL_FREE(c);
break;
/*
* Party-Control
*/
case SIGC_DROP_PARTY_indication:
if (c->uni->proto == UNIPROTO_UNI40U)
/* Q.2971:Call-Control-U 23/39 */
ux_drop_party_indication(c, msg);
else
/* Q.2971:Call-Control-N 23/39 */
nx_drop_party_indication(c, msg);
break;
case SIGC_DROP_PARTY_ACK_indication:
if (c->uni->proto == UNIPROTO_UNI40U)
/* Q.2971:Call-Control-U 23/39 */
ux_drop_party_ack_indication(c, msg);
else
/* Q.2971:Call-Control-N 23/39 */
nx_drop_party_ack_indication(c, msg);
break;
case SIGC_ADD_PARTY_REJ_indication:
if (c->uni->proto == UNIPROTO_UNI40U)
/* Q.2971:Call-Control-U 23/39 */
ux_add_party_rej_indication(c, msg);
else
/* Q.2971:Call-Control-N 23/39 */
nx_add_party_rej_indication(c, msg);
break;
case SIGC_SEND_DROP_PARTY:
/* Q.2971:Call-Control-U 21/39 */
/* Q.2971:Call-Control-U 25/39 */
if (uni_party_act_count(c, 2) != 0)
(void)uni_send_output(u, c->uni);
else if(c->cstate != CALLST_U11) {
c->uni->cause = u->u.drop_party.cause;
clear_callD(c);
}
UNI_FREE(u);
break;
case SIGC_SEND_DROP_PARTY_ACK:
/* Q.2971:Call-Control-U 21/39 */
/* Q.2971:Call-Control-U 25/39 */
if (uni_party_act_count(c, 2) != 0)
(void)uni_send_output(u, c->uni);
else if (c->cstate != CALLST_U11) {
c->uni->cause = u->u.drop_party_ack.cause;
clear_callD(c);
}
UNI_FREE(u);
break;
case SIGC_SEND_ADD_PARTY_REJ:
/* Q.2971:Call-Control-U 21/39 */
/* Q.2971:Call-Control-U 24/39 */
unx_send_add_party_rej(c, u);
break;
case SIGC_SEND_STATUS_ENQ:
/* Q.2971:Call-Control-U 21/39 */
/* Q.2971:Call-Control-U 25/39 */
unx_send_party_status_enq(c, u);
break;
case SIGC_PARTY_DESTROYED:
c->uni->funcs->uni_output(c->uni, c->uni->arg,
UNIAPI_PARTY_DESTROYED, cookie, msg);
break;
case SIGC_END:
break;
}
return;
drop:
/*
* This is for SAAL message signals that should be dropped.
*/
uni_msg_destroy(msg);
UNI_FREE(u);
}
/**********************************************************************/
/*
* Timeout functions
*/
static void
t308_func(struct call *c)
{
uni_enq_call(c, SIGC_T308, 0, NULL, NULL);
}
static void
t303_func(struct call *c)
{
uni_enq_call(c, SIGC_T303, 0, NULL, NULL);
}
static void
t301_func(struct call *c)
{
uni_enq_call(c, SIGC_T301, 0, NULL, NULL);
}
static void
t310_func(struct call *c)
{
uni_enq_call(c, SIGC_T310, 0, NULL, NULL);
}
static void
t313_func(struct call *c)
{
uni_enq_call(c, SIGC_T313, 0, NULL, NULL);
}
static void
t322_func(struct call *c)
{
uni_enq_call(c, SIGC_T322, 0, NULL, NULL);
}
/**********************************************************************/
/*
* Check whether the peer state is compatible with our state.
* Return the new callstate we should go to (either U0 or the current
* state).
* None of the state is U0 here. My state is not U11 or U12.
*
* Well, this turns out to be not so easy: the status enquiry could have
* been sent before we changed into the current state - the status will
* report a previous state without anything been lost.
*
* Incoming states are incompatible with outgoing states. Everything is ok.
*/
static enum call_state
state_compat(struct call *c, enum uni_callstate peer)
{
if ((c->cstate == CALLST_U1 ||
c->cstate == CALLST_U3 ||
c->cstate == CALLST_U4) &&
(peer == UNI_CALLSTATE_N6 ||
peer == UNI_CALLSTATE_N7 ||
peer == UNI_CALLSTATE_N8 ||
peer == UNI_CALLSTATE_N9))
return (CALLST_NULL);
if ((c->cstate == CALLST_N6 ||
c->cstate == CALLST_N7 ||
c->cstate == CALLST_N8 ||
c->cstate == CALLST_N9) &&
(peer == UNI_CALLSTATE_U1 ||
peer == UNI_CALLSTATE_U3 ||
peer == UNI_CALLSTATE_U4))
return (CALLST_NULL);
if ((peer == UNI_CALLSTATE_N1 ||
peer == UNI_CALLSTATE_N3 ||
peer == UNI_CALLSTATE_N4) &&
(c->cstate == CALLST_U6 ||
c->cstate == CALLST_U7 ||
c->cstate == CALLST_U8 ||
c->cstate == CALLST_N9))
return (CALLST_NULL);
if ((peer == UNI_CALLSTATE_U6 ||
peer == UNI_CALLSTATE_U7 ||
peer == UNI_CALLSTATE_U8 ||
peer == UNI_CALLSTATE_U9) &&
(c->cstate == CALLST_N1 ||
c->cstate == CALLST_N3 ||
c->cstate == CALLST_N4))
return (CALLST_NULL);
return (c->cstate);
}
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