/*!
* \brief Function that is registered as TM callback and called on replies
*
* Function that is registered as TM callback and called on replies. It
* parses the reply and set the appropriate event. This is then used to
* update the dialog state, run eventual dialog callbacks and save or
* update the necessary informations about the dialog.
* \see next_state_dlg
* \param t transaction, unused
* \param type type of the entered callback
* \param param saved dialog structure in the callback
*/
static void dlg_onreply(struct cell* t, int type, struct tmcb_params *param) {
struct dlg_cell *dlg;
struct dlg_cell_out *dlg_out = 0;
int new_state, old_state, unref, event;
str to_tag, to_uri;
struct sip_msg *req = param->req;
struct sip_msg *rpl = param->rpl;
struct dlg_entry_out* dlg_entry_out = 0;
if (t && t->fwded_totags)
LM_DBG("ONREPLY CALL_BACK from TM received and type is [%i] and TO is [%.*s]\n", type, t->fwded_totags->tag.len, t->fwded_totags->tag.s);
else
LM_DBG("ONREPLY CALL_BACK from TM received and type is [%i]\n", type);
dlg = (struct dlg_cell *) (*param->param);
if (shutdown_done || dlg == 0)
return;
if (t) {
dlg->transaction = t;
}
LM_DBG("DLG dialogid is entry:id [%i:%i]\n", dlg->h_entry, dlg->h_id);
if (type == TMCB_RESPONSE_FWDED) {
// The state does not change, but the msg is mutable in this callback
LM_DBG("TMCB_RESPONSE_FWDED from TM received");
run_dlg_callbacks(DLGCB_RESPONSE_FWDED, dlg, req, rpl, DLG_DIR_UPSTREAM, 0);
return;
}
if (type == TMCB_RESPONSE_OUT) {
LM_DBG("TMCB_RESPONSE_OUT\n");
return;
}
if (type == TMCB_RESPONSE_READY) {
if (rpl == FAKED_REPLY) {
LM_DBG("Faked reply\n");
return;
}
// get to tag
LM_DBG("Extracting to-tag from reply");
if (!rpl->to && ((parse_headers(rpl, HDR_TO_F, 0) < 0) || !rpl->to)) {
LM_ERR("bad reply or missing TO hdr :-/\n");
to_tag.s = 0;
to_tag.len = 0;
} else {
//populate to uri for this branch.
to_uri = get_to(rpl)->uri;
to_tag = get_to(rpl)->tag_value;
if (to_tag.s == 0 || to_tag.len == 0) {
LM_ERR("missing TAG param in TO hdr :-/\n");
to_tag.s = 0;
to_tag.len = 0;
//Here we assume that the transaction module timer will remove any early dialogs
return;
}
}
LM_DBG("Got to-tag from response: %.*s \n", to_tag.len, to_tag.s);
}
if (type == TMCB_DESTROY)
event = DLG_EVENT_TDEL;
else if (param->code < 200)
event = DLG_EVENT_RPL1xx;
else if (param->code < 300)
event = DLG_EVENT_RPL2xx;
else
event = DLG_EVENT_RPL3xx;
LM_DBG("Calling next_state_dlg and event is %i\n", event);
next_state_dlg(dlg, event, &old_state, &new_state, &unref, &to_tag);
if (type == TMCB_RESPONSE_READY) {
LM_DBG("Checking if there is an existing dialog_out entry with same to-tag");
dlg_entry_out = &dlg->dlg_entry_out;
lock_get(dlg->dlg_out_entries_lock);
dlg_out = dlg_entry_out->first;
LM_DBG("Scanning dlg_entry_out list for dlg_out");
while (dlg_out) {
//Check if there is an already dialog_out entry with same To-tag
if (dlg_out->to_tag.len == to_tag.len &&
memcmp(dlg_out->to_tag.s, to_tag.s, dlg_out->to_tag.len) == 0) {
//Found a dialog_out entry with same to_tag!
LM_DBG("Found dlg_out for to-tag: %.*s\n", dlg_out->to_tag.len, dlg_out->to_tag.s);
break;
}
dlg_out = dlg_out->next;
}
lock_release(dlg->dlg_out_entries_lock);
if (!dlg_out) {
LM_DBG("No dlg_out entry found - creating a new dialog_out entry on dialog [%p]\n", dlg);
dlg_out = build_new_dlg_out(dlg, &to_uri, &to_tag);
link_dlg_out(dlg, dlg_out, 0);
/* save callee's cseq, caller cseq, callee contact and callee record route*/
if (populate_leg_info(dlg, rpl, t, DLG_CALLEE_LEG, &to_tag) != 0) {
LM_ERR("could not add further info to the dlg out\n");
}
if (!dlg_out) {
LM_ERR("failed to create new dialog out structure\n");
//TODO do something on this error!
}
} else {
//This dlg_out already exists, update cseq and contact if present
LM_DBG("dlg_out entry found - updating cseq's for dialog out [%p] for to-tag [%.*s] \n", dlg_out, dlg_out->to_tag.len, dlg_out->to_tag.s);
if ((!rpl->cseq && parse_headers(rpl, HDR_CSEQ_F, 0) < 0) || !rpl->cseq ||
!rpl->cseq->parsed) {
LM_ERR("bad sip message or missing CSeq hdr :-/\n");
}
dlg_update_cseq(dlg, DLG_CALLEE_LEG, &((get_cseq(rpl))->number), &(dlg_out->to_tag));
/* extract the contact address to update if present*/
if (!rpl->contact && (parse_headers(rpl, HDR_CONTACT_F, 0) < 0 || !rpl->contact)) {
LM_ERR("Can not update callee contact: bad sip message or missing Contact hdr\n");
}
else if (parse_contact(rpl->contact) < 0 ||
((contact_body_t *) rpl->contact->parsed)->contacts == NULL ||
((contact_body_t *) rpl->contact->parsed)->contacts->next != NULL) {
LM_ERR("Can not update callee contact: bad Contact HDR\n");
}
else
{
str contact;
contact = ((contact_body_t *) rpl->contact->parsed)->contacts->uri;
dlg_update_contact(dlg, DLG_CALLEE_LEG, &contact, &(dlg_out->to_tag));
}
}
}
if (new_state == DLG_STATE_EARLY) {
run_dlg_callbacks(DLGCB_EARLY, dlg, req, rpl, DLG_DIR_UPSTREAM, 0);
return;
}
LM_DBG("new state is %i and old state is %i\n", new_state, old_state);
if ((new_state == DLG_STATE_CONFIRMED) && (event == DLG_EVENT_RPL2xx)) {
LM_DBG("dialog %p confirmed \n", dlg);
//Remove all the other entries in dialog_out for the same dialog after TM expires the transaction
//(not before in order to absorb late in-early-dialog requests).
//remove all other dlg_out objects
if (dlg_out) {
if (d_tmb.register_tmcb(req, NULL, TMCB_DESTROY, unlink_dlgouts_from_cb, (void*) dlg, NULL) < 0) {
LM_ERR("failed to register deletion delay function\n");
LM_DBG("Removing all other DLGs");
dlg_remove_dlg_out(dlg_out, dlg, 0);
} else {
//mark the outs for deletion
dlg_remove_dlg_out(dlg_out, dlg, 1);
}
} else {
LM_ERR("There is no dlg_out structure - this is bad\n");
//TODO: add error handling here
}
/* set start time */
dlg->start_ts = (unsigned int) (time(0));
/* save the settings to the database,
* if realtime saving mode configured- save dialog now
* else: the next time the timer will fire the update*/
dlg->dflags |= DLG_FLAG_NEW;
if (0 != insert_dlg_timer(&dlg->tl, dlg->lifetime)) {
LM_CRIT("Unable to insert dlg %p [%u:%u] on event %d [%d->%d] "
"with clid '%.*s' and tags '%.*s' \n",
dlg, dlg->h_entry, dlg->h_id, event, old_state, new_state,
dlg->callid.len, dlg->callid.s,
dlg->from_tag.len, dlg->from_tag.s);
} else {
ref_dlg(dlg, 1);
}
run_dlg_callbacks(DLGCB_CONFIRMED, dlg, req, rpl, DLG_DIR_UPSTREAM, 0);
if (unref) unref_dlg(dlg, unref);
return;
}
if (new_state == DLG_STATE_CONCURRENTLY_CONFIRMED && (old_state == DLG_STATE_CONFIRMED || old_state == DLG_STATE_CONCURRENTLY_CONFIRMED)) {
//This is a concurrently confirmed call
LM_DBG("This is a concurrently confirmed call.");
//Create a new Dialog ID token “X”
//Not sure how to do this so just going to use existing Did and add an X character to it
str new_did;
create_concurrent_did(dlg, &new_did);
//assign new did to the created or updated dialog_out entry.
update_dlg_out_did(dlg_out, &new_did);
//Then, duplicate the dialog_in entry and set its Dialog ID value to new_did
//for now rather just create new dlg structure with the correct params - this should be fixed if future use requires
struct dlg_cell *new_dlg = 0;
new_dlg = build_new_dlg(&(dlg->callid) /*callid*/,
&(dlg->from_uri) /*from uri*/,
&(dlg->from_tag)/*from_tag*/,
&(dlg->req_uri) /*r-uri*/);
//assign new did to dlg_in
update_dlg_did(new_dlg, &new_did);
if (new_dlg == 0) {
LM_ERR("failed to create new dialog\n");
return;
}
//link the new_dlg with dlg_out object
link_dlg_out(new_dlg, dlg_out, 0);
}
if (old_state != DLG_STATE_DELETED && new_state == DLG_STATE_DELETED) {
LM_DBG("dialog %p failed (negative reply)\n", dlg);
/* dialog setup not completed (3456XX) */
run_dlg_callbacks(DLGCB_FAILED, dlg, req, rpl, DLG_DIR_UPSTREAM, 0);
/* do unref */
if (unref)
unref_dlg(dlg, unref);
return;
}
if (unref) unref_dlg(dlg, unref);
return;
}
/*!
* \brief Create a new dialog from a sip message
*
* Create a new dialog from a SIP message, register a callback
* to keep track of the dialog with help of the tm module.
* This function is either called from the request callback, or
* from the dlg_manage function in the configuration script.
* \see dlg_onreq
* \see w_dlg_manage
* \param msg SIP message
* \param t transaction
* \return 0 on success, -1 on failure
*/
int dlg_new_dialog(struct sip_msg *req, struct cell *t, const int run_initial_cbs) {
struct dlg_cell *dlg;
str s;
str callid;
str ftag;
str ttag;
str req_uri;
unsigned int dir;
LM_DBG("starting dlg_new_dialog and method is [%.*s]\n", req->first_line.u.request.method.len, req->first_line.u.request.method.s);
if (current_dlg_pointer != NULL)
return -1;
if (req->first_line.u.request.method_value == METHOD_CANCEL)
return -1;
if (pre_match_parse(req, &callid, &ftag, &ttag, 0) < 0) {
LM_WARN("pre-matching failed\n");
return -1;
}
if (ttag.s != 0 && ttag.len != 0)
return -1;
if (pv_printf_s(req, ruri_param_model, &req_uri) < 0) {
LM_ERR("error - cannot print the r-uri format\n");
return -1;
}
trim(&req_uri);
if (detect_spirals) {
if (spiral_detected == 1)
return 0;
dir = DLG_DIR_NONE;
dlg = get_dlg(&callid, &ftag, &ttag, &dir);
if (dlg) {
LM_DBG("Callid '%.*s' found, must be a spiraled request\n",
callid.len, callid.s);
spiral_detected = 1;
if (run_initial_cbs)
run_dlg_callbacks(DLGCB_SPIRALED, dlg, req, NULL, DLG_DIR_DOWNSTREAM, 0);
//Add did to rr header for all spiralled requested INVITEs
if (req->first_line.u.request.method_value == METHOD_INVITE) {
if (add_dlg_rr_param(dlg, req, dlg->h_entry, dlg->h_id) < 0) {
LM_ERR("failed to add RR param\n");
}
}
// get_dlg has incremented the ref count by 1
unref_dlg(dlg, 1);
goto finish;
}
}
spiral_detected = 0;
LM_DBG("Building new Dialog for call-id %.*s\n", callid.len, callid.s);
LM_DBG("SIP Method: %.*s \n", req->first_line.u.request.method.len, req->first_line.u.request.method.s);
dlg = build_new_dlg(&callid /*callid*/,
&(get_from(req)->uri) /*from uri*/,
&ftag/*from_tag*/,
&req_uri /*r-uri*/);
if (dlg == 0) {
LM_ERR("failed to create new dialog\n");
return -1;
}
/* save caller's tag, cseq, contact and record route*/
if (populate_leg_info(dlg, req, t, DLG_CALLER_LEG,
&(get_from(req)->tag_value)) != 0) {
LM_ERR("could not add further info to the dialog\n");
lock_destroy(dlg->dlg_out_entries_lock);
lock_dealloc(dlg->dlg_out_entries_lock);
shm_free(dlg);
return -1;
}
dlg->transaction = t;
/* Populate initial varlist: */
dlg->vars = get_local_varlist_pointer(req, 1);
link_dlg(dlg, 0);
if (run_initial_cbs) run_create_callbacks(dlg, req);
//Dialog will *always* use DID cookie so no need for match mode anymore
if (add_dlg_rr_param(dlg, req, dlg->h_entry, dlg->h_id) < 0) {
LM_ERR("failed to add RR param\n");
goto error;
}
if (d_tmb.register_tmcb(req, t,
TMCB_RESPONSE_READY | TMCB_RESPONSE_FWDED | TMCB_RESPONSE_OUT,
dlg_onreply, (void*) dlg, unref_new_dialog) < 0) {
LM_ERR("failed to register TMCB\n");
goto error;
}
// increase reference counter because of registered callback
ref_dlg(dlg, 1);
dlg->lifetime = get_dlg_timeout(req);
s.s = _dlg_ctx.to_route_name;
s.len = strlen(s.s);
dlg_set_toroute(dlg, &s);
dlg->sflags |= _dlg_ctx.flags;
if (_dlg_ctx.to_bye != 0)
dlg->dflags |= DLG_FLAG_TOBYE;
finish:
if (t) {
// transaction exists ==> keep ref counter large enough to
// avoid premature cleanup and ensure proper dialog referencing
if (store_dlg_in_tm(req, t, dlg) < 0) {
LM_ERR("failed to store dialog in transaction\n");
goto error;
}
} else {
// no transaction exists ==> postpone work until we see the
// request being forwarded statefully
if (d_tmb.register_tmcb(req, NULL, TMCB_REQUEST_FWDED,
store_dlg_in_tm_cb, (void*) dlg, NULL) < 0) {
LM_ERR("failed to register callback for storing dialog in transaction\n");
goto error;
}
}
LM_DBG("Setting current dialog\n");
set_current_dialog(req, dlg);
_dlg_ctx.dlg = dlg;
ref_dlg(dlg, 1);
return 0;
error:
LM_DBG("Error in build_new_dlg");
if (!spiral_detected)
unref_dlg(dlg, 1); // undo ref regarding linking
return -1;
}
/**
* @brief ht dmq callback
*/
int dlg_dmq_handle_msg(struct sip_msg* msg, peer_reponse_t* resp, dmq_node_t* node)
{
int content_length;
str body;
dlg_cell_t *dlg;
int unref = 0;
int ret;
srjson_doc_t jdoc, prof_jdoc;
srjson_t *it = NULL;
dlg_dmq_action_t action = DLG_DMQ_NONE;
dlg_iuid_t iuid;
str profiles = {0, 0}, callid = {0, 0}, tag1 = {0,0}, tag2 = {0,0},
contact1 = {0,0}, contact2 = {0,0}, k={0,0}, v={0,0};
str cseq1 = {0,0}, cseq2 = {0,0}, route_set1 = {0,0}, route_set2 = {0,0},
from_uri = {0,0}, to_uri = {0,0}, req_uri = {0,0};
unsigned int init_ts = 0, start_ts = 0, lifetime = 0;
unsigned int state = 1;
srjson_t *vj;
/* received dmq message */
LM_DBG("dmq message received\n");
if(!msg->content_length) {
LM_ERR("no content length header found\n");
goto invalid2;
}
content_length = get_content_length(msg);
if(!content_length) {
LM_DBG("content length is 0\n");
goto invalid2;
}
body.s = get_body(msg);
body.len = content_length;
if (!body.s) {
LM_ERR("unable to get body\n");
goto error;
}
/* parse body */
LM_DBG("body: %.*s\n", body.len, body.s);
srjson_InitDoc(&jdoc, NULL);
jdoc.buf = body;
if(jdoc.root == NULL) {
jdoc.root = srjson_Parse(&jdoc, jdoc.buf.s);
if(jdoc.root == NULL)
{
LM_ERR("invalid json doc [[%s]]\n", jdoc.buf.s);
goto invalid;
}
}
for(it=jdoc.root->child; it; it = it->next)
{
if ((it->string == NULL) || (strcmp(it->string, "vars")==0)) continue;
LM_DBG("found field: %s\n", it->string);
if (strcmp(it->string, "action")==0) {
action = SRJSON_GET_UINT(it);
} else if (strcmp(it->string, "h_entry")==0) {
iuid.h_entry = SRJSON_GET_UINT(it);
} else if (strcmp(it->string, "h_id")==0) {
iuid.h_id = SRJSON_GET_UINT(it);
} else if (strcmp(it->string, "init_ts")==0) {
init_ts = SRJSON_GET_UINT(it);
} else if (strcmp(it->string, "start_ts")==0) {
start_ts = SRJSON_GET_UINT(it);
} else if (strcmp(it->string, "state")==0) {
state = SRJSON_GET_UINT(it);
} else if (strcmp(it->string, "lifetime")==0) {
lifetime = SRJSON_GET_UINT(it);
} else if (strcmp(it->string, "callid")==0) {
callid.s = it->valuestring;
callid.len = strlen(callid.s);
} else if (strcmp(it->string, "profiles")==0) {
profiles.s = it->valuestring;
profiles.len = strlen(profiles.s);
} else if (strcmp(it->string, "tag1")==0) {
tag1.s = it->valuestring;
tag1.len = strlen(tag1.s);
} else if (strcmp(it->string, "tag2")==0) {
tag2.s = it->valuestring;
tag2.len = strlen(tag2.s);
} else if (strcmp(it->string, "cseq1")==0) {
cseq1.s = it->valuestring;
cseq1.len = strlen(cseq1.s);
} else if (strcmp(it->string, "cseq2")==0) {
cseq2.s = it->valuestring;
cseq2.len = strlen(cseq2.s);
} else if (strcmp(it->string, "route_set1")==0) {
route_set1.s = it->valuestring;
route_set1.len = strlen(route_set1.s);
} else if (strcmp(it->string, "route_set2")==0) {
route_set2.s = it->valuestring;
route_set2.len = strlen(route_set2.s);
} else if (strcmp(it->string, "contact1")==0) {
contact1.s = it->valuestring;
contact1.len = strlen(contact1.s);
} else if (strcmp(it->string, "contact2")==0) {
contact2.s = it->valuestring;
contact2.len = strlen(contact2.s);
} else if (strcmp(it->string, "from_uri")==0) {
from_uri.s = it->valuestring;
from_uri.len = strlen(from_uri.s);
} else if (strcmp(it->string, "to_uri")==0) {
to_uri.s = it->valuestring;
to_uri.len = strlen(to_uri.s);
} else if (strcmp(it->string, "req_uri")==0) {
req_uri.s = it->valuestring;
req_uri.len = strlen(req_uri.s);
} else {
LM_ERR("unrecognized field in json object\n");
}
}
dlg = dlg_get_by_iuid(&iuid);
if (dlg) {
LM_DBG("found dialog [%u:%u] at %p\n", iuid.h_entry, iuid.h_id, dlg);
unref++;
}
switch(action) {
case DLG_DMQ_UPDATE:
LM_DBG("Updating dlg [%u:%u] with callid [%.*s]\n", iuid.h_entry, iuid.h_id,
callid.len, callid.s);
if (!dlg) {
dlg = build_new_dlg(&callid, &from_uri, &to_uri, &tag1, &req_uri);
if (!dlg) {
LM_ERR("failed to build new dialog\n");
goto error;
}
if(dlg->h_entry != iuid.h_entry){
LM_ERR("inconsistent hash data from peer: "
"make sure all Kamailio's use the same hash size\n");
shm_free(dlg);
goto error;
}
/* link the dialog */
link_dlg(dlg, 0, 0);
dlg_set_leg_info(dlg, &tag1, &route_set1, &contact1, &cseq1, 0);
/* override generated h_id */
dlg->h_id = iuid.h_id;
/* prevent DB sync */
dlg->dflags &= ~(DLG_FLAG_NEW|DLG_FLAG_CHANGED);
dlg->iflags |= DLG_IFLAG_DMQ_SYNC;
} else {
/* remove existing profiles */
if (dlg->profile_links!=NULL) {
destroy_linkers(dlg->profile_links);
dlg->profile_links = NULL;
}
}
dlg->init_ts = init_ts;
dlg->start_ts = start_ts;
vj = srjson_GetObjectItem(&jdoc, jdoc.root, "vars");
if(vj!=NULL) {
for(it=vj->child; it; it = it->next)
{
k.s = it->string; k.len = strlen(k.s);
v.s = it->valuestring; v.len = strlen(v.s);
set_dlg_variable(dlg, &k, &v);
}
}
/* add profiles */
if(profiles.s!=NULL) {
srjson_InitDoc(&prof_jdoc, NULL);
prof_jdoc.buf = profiles;
dlg_json_to_profiles(dlg, &prof_jdoc);
srjson_DestroyDoc(&prof_jdoc);
}
if (state == dlg->state) {
break;
}
/* intentional fallthrough */
case DLG_DMQ_STATE:
if (!dlg) {
LM_ERR("dialog [%u:%u] not found\n", iuid.h_entry, iuid.h_id);
goto error;
}
if (state < dlg->state) {
LM_NOTICE("Ignoring backwards state change on dlg [%u:%u]"
" with callid [%.*s] from state [%u] to state [%u]\n",
iuid.h_entry, iuid.h_id,
dlg->callid.len, dlg->callid.s, dlg->state, state);
break;
}
LM_DBG("State update dlg [%u:%u] with callid [%.*s] from state [%u]"
" to state [%u]\n", iuid.h_entry, iuid.h_id,
dlg->callid.len, dlg->callid.s, dlg->state, state);
switch (state) {
case DLG_STATE_EARLY:
dlg->start_ts = start_ts;
dlg->lifetime = lifetime;
dlg_set_leg_info(dlg, &tag1, &route_set1, &contact1, &cseq1, 0);
break;
case DLG_STATE_CONFIRMED:
dlg->start_ts = start_ts;
dlg->lifetime = lifetime;
dlg_set_leg_info(dlg, &tag1, &route_set1, &contact1, &cseq1, 0);
dlg_set_leg_info(dlg, &tag2, &route_set2, &contact2, &cseq2, 1);
if (insert_dlg_timer( &dlg->tl, dlg->lifetime ) != 0) {
LM_CRIT("Unable to insert dlg timer %p [%u:%u]\n",
dlg, dlg->h_entry, dlg->h_id);
} else {
/* dialog pointer inserted in timer list */
dlg_ref(dlg, 1);
}
break;
case DLG_STATE_DELETED:
if (dlg->state == DLG_STATE_CONFIRMED) {
ret = remove_dialog_timer(&dlg->tl);
if (ret == 0) {
/* one extra unref due to removal from timer list */
unref++;
} else if (ret < 0) {
LM_CRIT("unable to unlink the timer on dlg %p [%u:%u]\n",
dlg, dlg->h_entry, dlg->h_id);
}
}
/* prevent DB sync */
dlg->dflags |= DLG_FLAG_NEW;
/* keep dialog around for a bit, to prevent out-of-order
* syncs to reestablish the dlg */
dlg->init_ts = time(NULL);
break;
default:
LM_ERR("unhandled state update to state %u\n", state);
dlg_unref(dlg, unref);
goto error;
}
dlg->state = state;
break;
case DLG_DMQ_RM:
if (!dlg) {
LM_DBG("dialog [%u:%u] not found\n", iuid.h_entry, iuid.h_id);
goto error;
}
LM_DBG("Removed dlg [%u:%u] with callid [%.*s] int state [%u]\n",
iuid.h_entry, iuid.h_id,
dlg->callid.len, dlg->callid.s, dlg->state);
if (dlg->state==DLG_STATE_CONFIRMED
|| dlg->state==DLG_STATE_EARLY) {
ret = remove_dialog_timer(&dlg->tl);
if (ret == 0) {
/* one extra unref due to removal from timer list */
unref++;
} else if (ret < 0) {
LM_CRIT("unable to unlink the timer on dlg %p [%u:%u]\n",
dlg, dlg->h_entry, dlg->h_id);
}
}
/* prevent DB sync */
dlg->dflags |= DLG_FLAG_NEW;
unref++;
break;
case DLG_DMQ_SYNC:
dmq_send_all_dlgs(0);
break;
case DLG_DMQ_NONE:
break;
}
if (dlg && unref)
dlg_unref(dlg, unref);
srjson_DestroyDoc(&jdoc);
resp->reason = dmq_200_rpl;
resp->resp_code = 200;
return 0;
invalid:
srjson_DestroyDoc(&jdoc);
invalid2:
resp->reason = dmq_400_rpl;
resp->resp_code = 400;
return 0;
error:
srjson_DestroyDoc(&jdoc);
resp->reason = dmq_500_rpl;
resp->resp_code = 500;
return 0;
}
/*!
* \brief Create a new dialog from a sip message
*
* Create a new dialog from a SIP message, register a callback
* to keep track of the dialog with help of the tm module.
* This function is either called from the request callback, or
* from the dlg_manage function in the configuration script.
* \see dlg_onreq
* \see w_dlg_manage
* \param req SIP message
* \param t transaction
* \param run_initial_cbs if set zero, initial callbacks are not executed
* \return 0 on success, -1 on failure
*/
int dlg_new_dialog(sip_msg_t *req, struct cell *t, const int run_initial_cbs)
{
dlg_cell_t *dlg;
str s;
str callid;
str ftag;
str ttag;
str req_uri;
unsigned int dir;
dlg = dlg_get_ctx_dialog();
if(dlg != NULL) {
dlg_release(dlg);
return -1;
}
if(req->first_line.u.request.method_value != METHOD_INVITE)
return -1;
if(pre_match_parse( req, &callid, &ftag, &ttag, 0)<0) {
LM_WARN("pre-matching failed\n");
return -1;
}
if(ttag.s!=0 && ttag.len!=0)
return -1;
if(pv_printf_s(req, ruri_param_model, &req_uri)<0) {
LM_ERR("error - cannot print the r-uri format\n");
return -1;
}
trim(&req_uri);
dir = DLG_DIR_NONE;
/* search dialog by SIP attributes
* - hash table slot is left locked */
dlg = dlg_search(&callid, &ftag, &ttag, &dir);
if(dlg) {
if (detect_spirals) {
if (spiral_detected == 1) {
dlg_hash_release(&callid);
return 0;
}
if ( dlg->state != DLG_STATE_DELETED ) {
LM_DBG("Callid '%.*s' found, must be a spiraled request\n",
callid.len, callid.s);
spiral_detected = 1;
if (run_initial_cbs)
run_dlg_callbacks( DLGCB_SPIRALED, dlg, req, NULL,
DLG_DIR_DOWNSTREAM, 0);
/* set ctx dlg id shortcuts */
_dlg_ctx.iuid.h_entry = dlg->h_entry;
_dlg_ctx.iuid.h_id = dlg->h_id;
/* search_dlg() has incremented the ref count by 1 */
dlg_release(dlg);
dlg_hash_release(&callid);
return 0;
}
dlg_release(dlg);
}
}
spiral_detected = 0;
dlg = build_new_dlg (&callid /*callid*/,
&(get_from(req)->uri) /*from uri*/,
&(get_to(req)->uri) /*to uri*/,
&ftag/*from_tag*/,
&req_uri /*r-uri*/ );
if (dlg==0) {
dlg_hash_release(&callid);
LM_ERR("failed to create new dialog\n");
return -1;
}
/* save caller's tag, cseq, contact and record route*/
if (populate_leg_info(dlg, req, t, DLG_CALLER_LEG,
&(get_from(req)->tag_value)) !=0) {
dlg_hash_release(&callid);
LM_ERR("could not add further info to the dialog\n");
shm_free(dlg);
return -1;
}
/* Populate initial varlist: */
dlg->vars = get_local_varlist_pointer(req, 1);
/* after dlg_search() slot was kept locked */
link_dlg(dlg, 0, 1);
/* unlock after dlg_search() */
dlg_hash_release(&callid);
dlg->lifetime = get_dlg_timeout(req);
s.s = _dlg_ctx.to_route_name;
s.len = strlen(s.s);
dlg_set_toroute(dlg, &s);
dlg->sflags |= _dlg_ctx.flags;
dlg->iflags |= _dlg_ctx.iflags;
if (dlg_send_bye!=0 || _dlg_ctx.to_bye!=0)
dlg->iflags |= DLG_IFLAG_TIMEOUTBYE;
if (run_initial_cbs) run_create_callbacks( dlg, req);
/* first INVITE seen (dialog created, unconfirmed) */
if ( seq_match_mode!=SEQ_MATCH_NO_ID &&
add_dlg_rr_param( req, dlg->h_entry, dlg->h_id)<0 ) {
LM_ERR("failed to add RR param\n");
goto error;
}
if_update_stat( dlg_enable_stats, processed_dlgs, 1);
_dlg_ctx.cpid = my_pid();
_dlg_ctx.iuid.h_entry = dlg->h_entry;
_dlg_ctx.iuid.h_id = dlg->h_id;
set_current_dialog(req, dlg);
return 0;
error:
if (!spiral_detected)
dlg_unref(dlg, 1); // undo ref regarding linking
return -1;
}
void dlg_bridge_tm_callback(struct cell *t, int type, struct tmcb_params *ps)
{
struct sip_msg *msg = NULL;
dlg_transfer_ctx_t *dtc = NULL;
struct dlg_cell *dlg = NULL;
str s;
str cseq;
str empty = {"", 0};
if(ps->param==NULL || *ps->param==0)
{
LM_DBG("message id not received\n");
return;
}
dtc = *((dlg_transfer_ctx_t**)ps->param);
if(dtc==NULL)
return;
LM_DBG("completed with status %d\n", ps->code);
if(ps->code>=300)
goto error;
/* 2xx - build dialog/send refer */
msg = ps->rpl;
if((msg->cseq==NULL || parse_headers(msg,HDR_CSEQ_F,0)<0)
|| msg->cseq==NULL || msg->cseq->parsed==NULL)
{
LM_ERR("bad sip message or missing CSeq hdr :-/\n");
goto error;
}
cseq = (get_cseq(msg))->number;
if((msg->to==NULL && parse_headers(msg, HDR_TO_F,0)<0) || msg->to==NULL)
{
LM_ERR("bad request or missing TO hdr\n");
goto error;
}
if(parse_from_header(msg))
{
LM_ERR("bad request or missing FROM hdr\n");
goto error;
}
if((msg->callid==NULL && parse_headers(msg,HDR_CALLID_F,0)<0)
|| msg->callid==NULL){
LM_ERR("bad request or missing CALLID hdr\n");
goto error;
}
s = msg->callid->body;
trim(&s);
/* some sanity checks */
if (s.len==0 || get_from(msg)->tag_value.len==0) {
LM_ERR("invalid request -> callid (%d) or from TAG (%d) empty\n",
s.len, get_from(msg)->tag_value.len);
goto error;
}
dlg = build_new_dlg(&s /*callid*/, &(get_from(msg)->uri) /*from uri*/,
&(get_to(msg)->uri) /*to uri*/,
&(get_from(msg)->tag_value)/*from_tag*/,
&(get_to(msg)->uri) /*use to as r-uri*/ );
if (dlg==0) {
LM_ERR("failed to create new dialog\n");
goto error;
}
dtc->dlg = dlg;
if (dlg_set_leg_info(dlg, &(get_from(msg)->tag_value),
&empty, &dlg_bridge_controller, &cseq, DLG_CALLER_LEG)!=0) {
LM_ERR("dlg_set_leg_info failed\n");
goto error;
}
if (populate_leg_info(dlg, msg, t, DLG_CALLEE_LEG,
&(get_to(msg)->tag_value)) !=0)
{
LM_ERR("could not add further info to the dialog\n");
shm_free(dlg);
goto error;
}
if(dlg_refer_callee(dtc)!=0)
goto error;
return;
error:
dlg_transfer_ctx_free(dtc);
return;
}
int dlg_transfer(struct dlg_cell *dlg, str *to, int side)
{
dlg_transfer_ctx_t *dtc = NULL;
struct dlg_cell *ndlg = NULL;
str from;
str empty = {"", 0};
dtc = (dlg_transfer_ctx_t*)shm_malloc(sizeof(dlg_transfer_ctx_t));
if(dtc==NULL)
{
LM_ERR("no shm\n");
return -1;
}
if(side==DLG_CALLEE_LEG)
{
from = dlg->from_uri;
} else {
from = dlg->to_uri;
}
memset(dtc, 0, sizeof(dlg_transfer_ctx_t));
dtc->from.s = (char*)shm_malloc((from.len+1)*sizeof(char));
if(dtc->from.s==NULL)
{
LM_ERR("no shm\n");
shm_free(dtc);
return -1;
}
dtc->to.s = (char*)shm_malloc((to->len+1)*sizeof(char));
if(dtc->to.s==NULL)
{
LM_ERR("no shm\n");
shm_free(dtc->from.s);
shm_free(dtc);
return -1;
}
memcpy(dtc->from.s, from.s, from.len);
dtc->from.len = from.len;
dtc->from.s[dtc->from.len] = '\0';
memcpy(dtc->to.s, to->s, to->len);
dtc->to.len = to->len;
dtc->to.s[dtc->to.len] = '\0';
if(side==DLG_CALLER_LEG)
ndlg = build_new_dlg(&dlg->callid /*callid*/,
&dlg->to_uri /*from uri*/, &dlg->from_uri /*to uri*/,
&dlg->tag[side]/*from_tag*/, &dlg->req_uri /*req uri */ );
else
ndlg = build_new_dlg(&dlg->callid /*callid*/,
&dlg->from_uri /*from uri*/, &dlg->to_uri /*to uri*/,
&dlg->tag[side]/*from_tag*/, &dlg->req_uri /*req uri */ );
if (ndlg==0) {
LM_ERR("failed to create new dialog\n");
goto error;
}
dtc->dlg = ndlg;
if (dlg_set_leg_info(ndlg, &dlg->tag[side], &empty,
&dlg->contact[side], &dlg->cseq[side], DLG_CALLER_LEG)!=0)
{
LM_ERR("dlg_set_leg_info failed for caller\n");
goto error;
}
if(side==DLG_CALLEE_LEG)
side = DLG_CALLER_LEG;
else
side = DLG_CALLEE_LEG;
if (dlg_set_leg_info(ndlg, &dlg->tag[side], &dlg->route_set[side],
&dlg->contact[side], &dlg->cseq[side], DLG_CALLEE_LEG)!=0)
{
LM_ERR("dlg_set_leg_info failed for caller\n");
goto error;
}
if(dlg_refer_callee(dtc)!=0)
goto error;
return 0;
error:
dlg_transfer_ctx_free(dtc);
return -1;
}
/**
* replicates the remote update of an ongoing dialog locally
* by reading the relevant information using the Binary Packet Interface
*/
int dlg_replicated_update(void)
{
struct dlg_cell *dlg;
str call_id, from_tag, to_tag, from_uri, to_uri, vars, profiles;
unsigned int dir, dst_leg;
int timeout, h_entry;
str st;
struct dlg_entry *d_entry;
bin_pop_str(&call_id);
bin_pop_str(&from_tag);
bin_pop_str(&to_tag);
bin_pop_str(&from_uri);
bin_pop_str(&to_uri);
LM_DBG("replicated update for ['%.*s' '%.*s' '%.*s' '%.*s' '%.*s']\n",
call_id.len, call_id.s, from_tag.len, from_tag.s, to_tag.len, to_tag.s,
from_uri.len, from_uri.s, to_uri.len, to_uri.s);
dlg = get_dlg(&call_id, &from_tag, &to_tag, &dir, &dst_leg);
h_entry = dlg_hash(&call_id);
d_entry = &d_table->entries[h_entry];
dlg_lock(d_table, d_entry);
if (!dlg) {
/* TODO: change to LM_DBG */
LM_ERR("dialog not found, building new\n");
dlg = build_new_dlg(&call_id, &from_uri, &to_uri, &from_tag);
if (!dlg) {
LM_ERR("Failed to create replicated dialog!\n");
goto error;
}
return dlg_replicated_create(dlg, &from_tag, &to_tag, 0);
}
bin_skip_int(2);
bin_pop_int(&dlg->state);
bin_skip_str(2);
bin_pop_str(&st);
if (dlg_update_cseq(dlg, DLG_CALLER_LEG, &st, 0) != 0) {
LM_ERR("failed to update caller cseq\n");
goto error;
}
bin_pop_str(&st);
if (dlg_update_cseq(dlg, callee_idx(dlg), &st, 0) != 0) {
LM_ERR("failed to update callee cseq\n");
goto error;
}
bin_skip_str(6);
bin_pop_str(&vars);
bin_pop_str(&profiles);
bin_pop_int(&dlg->user_flags);
bin_pop_int(&dlg->flags);
bin_pop_int(&timeout);
bin_skip_int(2);
timeout -= time(0);
LM_DBG("Received updated timeout of %d for dialog %.*s\n",timeout,call_id.len,call_id.s);
if (dlg->lifetime != timeout) {
dlg->lifetime = timeout;
if (update_dlg_timer(&dlg->tl, dlg->lifetime) == -1)
LM_ERR("failed to update dialog lifetime!\n");
}
unref_dlg_unsafe(dlg, 1, d_entry);
if (vars.s && vars.len != 0)
read_dialog_vars(vars.s, vars.len, dlg);
dlg_unlock(d_table, d_entry);
if (profiles.s && profiles.len != 0)
read_dialog_profiles(profiles.s, profiles.len, dlg, 1, 1);
return 0;
error:
dlg_unlock(d_table, d_entry);
return -1;
}
/**
* replicates a confirmed dialog from another OpenSIPS instance
* by reading the relevant information using the Binary Packet Interface
*/
int dlg_replicated_create(struct dlg_cell *cell, str *ftag, str *ttag, int safe)
{
int next_id, h_entry;
unsigned int dir, dst_leg;
str callid, from_uri, to_uri, from_tag, to_tag;
str cseq1,cseq2,contact1,contact2,rroute1,rroute2,mangled_fu,mangled_tu;
str sock, vars, profiles;
struct dlg_cell *dlg = NULL;
struct socket_info *caller_sock, *callee_sock;
struct dlg_entry *d_entry;
if_update_stat(dlg_enable_stats, processed_dlgs, 1);
LM_DBG("Received replicated dialog!\n");
if (!cell) {
bin_pop_str(&callid);
bin_pop_str(&from_tag);
bin_pop_str(&to_tag);
bin_pop_str(&from_uri);
bin_pop_str(&to_uri);
dlg = get_dlg(&callid, &from_tag, &to_tag, &dir, &dst_leg);
h_entry = dlg_hash(&callid);
d_entry = &d_table->entries[h_entry];
if (safe)
dlg_lock(d_table, d_entry);
if (dlg) {
LM_DBG("Dialog with ci '%.*s' is already created\n",
callid.len, callid.s);
unref_dlg_unsafe(dlg, 1, d_entry);
dlg_unlock(d_table, d_entry);
return 0;
}
dlg = build_new_dlg(&callid, &from_uri, &to_uri, &from_tag);
if (!dlg) {
LM_ERR("Failed to create replicated dialog!\n");
goto pre_linking_error;
}
} else {
h_entry = dlg_hash(&cell->callid);
d_entry = &d_table->entries[h_entry];
if (safe)
dlg_lock(d_table, d_entry);
from_tag = *ftag;
to_tag = *ttag;
dlg = cell;
}
bin_pop_int(&dlg->h_id);
bin_pop_int(&dlg->start_ts);
bin_pop_int(&dlg->state);
next_id = d_table->entries[dlg->h_entry].next_id;
d_table->entries[dlg->h_entry].next_id =
(next_id <= dlg->h_id) ? (dlg->h_id + 1) : next_id;
if (bin_pop_str(&sock))
goto pre_linking_error;
caller_sock = fetch_socket_info(&sock);
if (bin_pop_str(&sock))
goto pre_linking_error;
callee_sock = fetch_socket_info(&sock);
if (!caller_sock || !callee_sock) {
LM_ERR("Dialog in DB doesn't match any listening sockets\n");
goto pre_linking_error;
}
bin_pop_str(&cseq1);
bin_pop_str(&cseq2);
bin_pop_str(&rroute1);
bin_pop_str(&rroute2);
bin_pop_str(&contact1);
bin_pop_str(&contact2);
bin_pop_str(&mangled_fu);
bin_pop_str(&mangled_tu);
/* add the 2 legs */
if (dlg_add_leg_info(dlg, &from_tag, &rroute1, &contact1,
&cseq1, caller_sock, 0, 0) != 0 ||
dlg_add_leg_info(dlg, &to_tag, &rroute2, &contact2,
&cseq2, callee_sock, &mangled_fu, &mangled_tu) != 0) {
LM_ERR("dlg_set_leg_info failed\n");
goto pre_linking_error;
}
dlg->legs_no[DLG_LEG_200OK] = DLG_FIRST_CALLEE_LEG;
/* link the dialog into the hash */
dlg->h_id = d_entry->next_id++;
if (!d_entry->first)
d_entry->first = d_entry->last = dlg;
else {
d_entry->last->next = dlg;
dlg->prev = d_entry->last;
d_entry->last = dlg;
}
dlg->ref++;
d_entry->cnt++;
bin_pop_str(&vars);
bin_pop_str(&profiles);
bin_pop_int(&dlg->user_flags);
bin_pop_int(&dlg->flags);
bin_pop_int((void *)&dlg->tl.timeout);
bin_pop_int(&dlg->legs[DLG_CALLER_LEG].last_gen_cseq);
bin_pop_int(&dlg->legs[callee_idx(dlg)].last_gen_cseq);
if (dlg->tl.timeout <= (unsigned int)time(0))
dlg->tl.timeout = 0;
else
dlg->tl.timeout -= (unsigned int)time(0);
/* restore the timer values */
if (insert_dlg_timer(&dlg->tl, (int)dlg->tl.timeout) != 0) {
LM_CRIT("Unable to insert dlg %p [%u:%u] "
"with clid '%.*s' and tags '%.*s' '%.*s'\n",
dlg, dlg->h_entry, dlg->h_id,
dlg->callid.len, dlg->callid.s,
dlg->legs[DLG_CALLER_LEG].tag.len,
dlg->legs[DLG_CALLER_LEG].tag.s,
dlg->legs[callee_idx(dlg)].tag.len,
ZSW(dlg->legs[callee_idx(dlg)].tag.s));
goto error;
}
if (dlg->state == DLG_STATE_CONFIRMED_NA ||
dlg->state == DLG_STATE_CONFIRMED)
active_dlgs_cnt++;
/* reference the dialog as kept in the timer list */
ref_dlg_unsafe(dlg, 1);
LM_DBG("Received initial timeout of %d for dialog %.*s, safe = %d\n",dlg->tl.timeout,callid.len,callid.s,safe);
dlg->lifetime = 0;
/*
Do not replicate the pinging - we might terminate dialogs badly when running
as backup
if (dlg->flags & DLG_FLAG_PING_CALLER || dlg->flags & DLG_FLAG_PING_CALLEE) {
if (insert_ping_timer(dlg) != 0)
LM_CRIT("Unable to insert dlg %p into ping timer\n",dlg);
else {
ref_dlg_unsafe(dlg, 1);
}
}
*/
if (dlg_db_mode == DB_MODE_DELAYED) {
/* to be later removed by timer */
ref_dlg_unsafe(dlg, 1);
}
if (vars.s && vars.len != 0)
read_dialog_vars(vars.s, vars.len, dlg);
dlg_unlock(d_table, d_entry);
if (profiles.s && profiles.len != 0)
read_dialog_profiles(profiles.s, profiles.len, dlg, 0, 1);
if_update_stat(dlg_enable_stats, active_dlgs, 1);
run_load_callback_per_dlg(dlg);
return 0;
pre_linking_error:
dlg_unlock(d_table, d_entry);
if (dlg)
destroy_dlg(dlg);
return -1;
error:
dlg_unlock(d_table, d_entry);
if (dlg)
unref_dlg(dlg, 1);
return -1;
}
/**
* replicates a confirmed dialog from another OpenSIPS instance
* by reading the relevant information using the Binary Packet Interface
*/
int dlg_replicated_create(bin_packet_t *packet, struct dlg_cell *cell, str *ftag,
str *ttag, int safe)
{
int h_entry;
unsigned int dir, dst_leg;
str callid = { NULL, 0 }, from_uri, to_uri, from_tag, to_tag;
str cseq1, cseq2, contact1, contact2, rroute1, rroute2, mangled_fu, mangled_tu;
str sock, vars, profiles;
struct dlg_cell *dlg = NULL;
struct socket_info *caller_sock, *callee_sock;
struct dlg_entry *d_entry;
LM_DBG("Received replicated dialog!\n");
if (!cell) {
DLG_BIN_POP(str, packet, callid, malformed);
DLG_BIN_POP(str, packet, from_tag, malformed);
DLG_BIN_POP(str, packet, to_tag, malformed);
DLG_BIN_POP(str, packet, from_uri, malformed);
DLG_BIN_POP(str, packet, to_uri, malformed);
dlg = get_dlg(&callid, &from_tag, &to_tag, &dir, &dst_leg);
h_entry = dlg_hash(&callid);
d_entry = &d_table->entries[h_entry];
if (safe)
dlg_lock(d_table, d_entry);
if (dlg) {
LM_DBG("Dialog with ci '%.*s' is already created\n",
callid.len, callid.s);
unref_dlg_unsafe(dlg, 1, d_entry);
/* unmark dlg as loaded from DB (otherwise it would have been
* dropped later when syncing from cluster is done) */
dlg->flags &= ~DLG_FLAG_FROM_DB;
dlg_unlock(d_table, d_entry);
return 0;
}
dlg = build_new_dlg(&callid, &from_uri, &to_uri, &from_tag);
if (!dlg) {
LM_ERR("Failed to create replicated dialog!\n");
goto pre_linking_error;
}
} else {
h_entry = dlg_hash(&cell->callid);
d_entry = &d_table->entries[h_entry];
if (safe)
dlg_lock(d_table, d_entry);
from_tag = *ftag;
to_tag = *ttag;
dlg = cell;
}
if_update_stat(dlg_enable_stats, processed_dlgs, 1);
DLG_BIN_POP(int, packet, dlg->h_id, pre_linking_error);
DLG_BIN_POP(int, packet, dlg->start_ts, pre_linking_error);
DLG_BIN_POP(int, packet, dlg->state, pre_linking_error);
/* next_id follows the max value of all replicated ids */
if (d_table->entries[dlg->h_entry].next_id <= dlg->h_id)
d_table->entries[dlg->h_entry].next_id = dlg->h_id + 1;
DLG_BIN_POP(str, packet, sock, pre_linking_error);
caller_sock = fetch_socket_info(&sock);
DLG_BIN_POP(str, packet, sock, pre_linking_error);
callee_sock = fetch_socket_info(&sock);
if (!caller_sock || !callee_sock) {
LM_ERR("Replicated dialog doesn't match any listening sockets\n");
goto pre_linking_error;
}
DLG_BIN_POP(str, packet, cseq1, pre_linking_error);
DLG_BIN_POP(str, packet, cseq2, pre_linking_error);
DLG_BIN_POP(str, packet, rroute1, pre_linking_error);
DLG_BIN_POP(str, packet, rroute2, pre_linking_error);
DLG_BIN_POP(str, packet, contact1, pre_linking_error);
DLG_BIN_POP(str, packet, contact2, pre_linking_error);
DLG_BIN_POP(str, packet, mangled_fu, pre_linking_error);
DLG_BIN_POP(str, packet, mangled_tu, pre_linking_error);
/* add the 2 legs */
/* TODO - sdp here */
if (dlg_update_leg_info(0, dlg, &from_tag, &rroute1, &contact1,
&cseq1, caller_sock, 0, 0,0) != 0 ||
dlg_update_leg_info(1, dlg, &to_tag, &rroute2, &contact2,
&cseq2, callee_sock, &mangled_fu, &mangled_tu,0) != 0) {
LM_ERR("dlg_set_leg_info failed\n");
goto pre_linking_error;
}
dlg->legs_no[DLG_LEG_200OK] = DLG_FIRST_CALLEE_LEG;
/* link the dialog into the hash */
if (!d_entry->first)
d_entry->first = d_entry->last = dlg;
else {
d_entry->last->next = dlg;
dlg->prev = d_entry->last;
d_entry->last = dlg;
}
dlg->ref++;
d_entry->cnt++;
DLG_BIN_POP(str, packet, vars, pre_linking_error);
DLG_BIN_POP(str, packet, profiles, pre_linking_error);
DLG_BIN_POP(int, packet, dlg->user_flags, pre_linking_error);
DLG_BIN_POP(int, packet, dlg->mod_flags, pre_linking_error);
DLG_BIN_POP(int, packet, dlg->flags, pre_linking_error);
/* also save the dialog into the DB on this instance */
dlg->flags |= DLG_FLAG_NEW;
DLG_BIN_POP(int, packet, dlg->tl.timeout, pre_linking_error);
DLG_BIN_POP(int, packet, dlg->legs[DLG_CALLER_LEG].last_gen_cseq, pre_linking_error);
DLG_BIN_POP(int, packet, dlg->legs[callee_idx(dlg)].last_gen_cseq, pre_linking_error);
if (dlg->tl.timeout <= (unsigned int) time(0))
dlg->tl.timeout = 0;
else
dlg->tl.timeout -= (unsigned int) time(0);
/* restore the timer values */
if (insert_dlg_timer(&dlg->tl, (int) dlg->tl.timeout) != 0) {
LM_CRIT("Unable to insert dlg %p [%u:%u] "
"with clid '%.*s' and tags '%.*s' '%.*s'\n",
dlg, dlg->h_entry, dlg->h_id,
dlg->callid.len, dlg->callid.s,
dlg->legs[DLG_CALLER_LEG].tag.len,
dlg->legs[DLG_CALLER_LEG].tag.s,
dlg->legs[callee_idx(dlg)].tag.len,
ZSW(dlg->legs[callee_idx(dlg)].tag.s));
goto error;
}
if (dlg->state == DLG_STATE_CONFIRMED_NA ||
dlg->state == DLG_STATE_CONFIRMED)
active_dlgs_cnt++;
/* reference the dialog as kept in the timer list */
ref_dlg_unsafe(dlg, 1);
LM_DBG("Received initial timeout of %d for dialog %.*s, safe = %d\n",
dlg->tl.timeout, callid.len, callid.s, safe);
dlg->lifetime = 0;
if (dlg->flags & DLG_FLAG_PING_CALLER || dlg->flags & DLG_FLAG_PING_CALLEE) {
if (insert_ping_timer(dlg) != 0)
LM_CRIT("Unable to insert dlg %p into ping timer\n",dlg);
else {
ref_dlg_unsafe(dlg, 1);
}
}
if (dlg_db_mode == DB_MODE_DELAYED) {
/* to be later removed by timer */
ref_dlg_unsafe(dlg, 1);
}
if (vars.s && vars.len != 0)
read_dialog_vars(vars.s, vars.len, dlg);
dlg_unlock(d_table, d_entry);
if (profiles.s && profiles.len != 0)
read_dialog_profiles(profiles.s, profiles.len, dlg, 0, 1);
if_update_stat(dlg_enable_stats, active_dlgs, 1);
run_load_callback_per_dlg(dlg);
return 0;
pre_linking_error:
dlg_unlock(d_table, d_entry);
if (dlg)
destroy_dlg(dlg);
return -1;
error:
dlg_unlock(d_table, d_entry);
if (dlg)
unref_dlg(dlg, 1);
malformed:
return -1;
}
/**
* replicates the remote update of an ongoing dialog locally
* by reading the relevant information using the Binary Packet Interface
*/
int dlg_replicated_update(bin_packet_t *packet)
{
struct dlg_cell *dlg;
str call_id, from_tag, to_tag, from_uri, to_uri, vars, profiles;
unsigned int dir, dst_leg;
int timeout, h_entry;
str st;
struct dlg_entry *d_entry;
int rcv_flags, save_new_flag;
bin_pop_str(packet, &call_id);
bin_pop_str(packet, &from_tag);
bin_pop_str(packet, &to_tag);
bin_pop_str(packet, &from_uri);
bin_pop_str(packet, &to_uri);
LM_DBG("replicated update for ['%.*s' '%.*s' '%.*s' '%.*s' '%.*s']\n",
call_id.len, call_id.s, from_tag.len, from_tag.s, to_tag.len, to_tag.s,
from_uri.len, from_uri.s, to_uri.len, to_uri.s);
dlg = get_dlg(&call_id, &from_tag, &to_tag, &dir, &dst_leg);
h_entry = dlg_hash(&call_id);
d_entry = &d_table->entries[h_entry];
dlg_lock(d_table, d_entry);
if (!dlg) {
LM_DBG("dialog not found, building new\n");
dlg = build_new_dlg(&call_id, &from_uri, &to_uri, &from_tag);
if (!dlg) {
LM_ERR("Failed to create replicated dialog!\n");
goto error;
}
return dlg_replicated_create(packet ,dlg, &from_tag, &to_tag, 0);
}
bin_skip_int(packet, 2);
bin_pop_int(packet, &dlg->state);
bin_skip_str(packet, 2);
bin_pop_str(packet, &st);
if (dlg_update_cseq(dlg, DLG_CALLER_LEG, &st, 0) != 0) {
LM_ERR("failed to update caller cseq\n");
goto error;
}
bin_pop_str(packet, &st);
if (dlg_update_cseq(dlg, callee_idx(dlg), &st, 0) != 0) {
LM_ERR("failed to update callee cseq\n");
goto error;
}
bin_skip_str(packet, 6);
bin_pop_str(packet, &vars);
bin_pop_str(packet, &profiles);
bin_pop_int(packet, &dlg->user_flags);
bin_pop_int(packet, &dlg->mod_flags);
bin_pop_int(packet, &rcv_flags);
/* make sure an update received immediately after a create can't
* incorrectly erase the DLG_FLAG_NEW before locally writing to DB */
save_new_flag = dlg->flags & DLG_FLAG_NEW;
dlg->flags = rcv_flags;
dlg->flags |= ((save_new_flag ? DLG_FLAG_NEW : 0) | DLG_FLAG_CHANGED);
bin_pop_int(packet, &timeout);
bin_skip_int(packet, 2);
timeout -= time(0);
LM_DBG("Received updated timeout of %d for dialog %.*s\n",
timeout, call_id.len, call_id.s);
if (dlg->lifetime != timeout) {
dlg->lifetime = timeout;
switch (update_dlg_timer(&dlg->tl, dlg->lifetime) ) {
case -1:
LM_ERR("failed to update dialog lifetime!\n");
/* continue */
case 0:
/* timeout value was updated */
break;
case 1:
/* dlg inserted in timer list with new expire (reference it)*/
ref_dlg(dlg,1);
}
}
unref_dlg_unsafe(dlg, 1, d_entry);
if (vars.s && vars.len != 0)
read_dialog_vars(vars.s, vars.len, dlg);
dlg->flags |= DLG_FLAG_VP_CHANGED;
dlg_unlock(d_table, d_entry);
if (profiles.s && profiles.len != 0)
read_dialog_profiles(profiles.s, profiles.len, dlg, 1, 1);
return 0;
error:
dlg_unlock(d_table, d_entry);
return -1;
}
static int load_dialog_info_from_db(int dlg_hash_size)
{
db_res_t * res;
db_val_t * values;
db_row_t * rows;
int i, nr_rows;
struct dlg_cell *dlg;
str callid, from_uri, to_uri, from_tag, to_tag;
str cseq1,cseq2,contact1,contact2,rroute1,rroute2,mangled_fu,mangled_tu;
unsigned int next_id;
int no_rows = 10;
struct socket_info *caller_sock,*callee_sock;
res = 0;
if((nr_rows = select_entire_dialog_table(&res,&no_rows)) < 0)
goto end;
nr_rows = RES_ROW_N(res);
do {
LM_DBG("loading information from database for %i dialogs\n", nr_rows);
rows = RES_ROWS(res);
/* for every row---dialog */
for(i=0; i<nr_rows; i++){
values = ROW_VALUES(rows + i);
if (VAL_NULL(values) || VAL_NULL(values+1)) {
LM_ERR("columns %.*s or/and %.*s cannot be null -> skipping\n",
h_entry_column.len, h_entry_column.s,
h_id_column.len, h_id_column.s);
continue;
}
if (VAL_NULL(values+7) || VAL_NULL(values+8)) {
LM_ERR("columns %.*s or/and %.*s cannot be null -> skipping\n",
start_time_column.len, start_time_column.s,
state_column.len, state_column.s);
continue;
}
if ( VAL_INT(values+8) == DLG_STATE_DELETED ) {
LM_DBG("dialog already terminated -> skipping\n");
continue;
}
caller_sock = create_socket_info(values, 16);
callee_sock = create_socket_info(values, 17);
if (caller_sock == NULL || callee_sock == NULL) {
LM_ERR("Dialog in DB doesn't match any listening sockets");
continue;
}
/*restore the dialog info*/
GET_STR_VALUE(callid, values, 2, 1, 0);
GET_STR_VALUE(from_uri, values, 3, 1, 0);
GET_STR_VALUE(from_tag, values, 4, 1, 0);
GET_STR_VALUE(to_uri, values, 5, 1, 0);
if((dlg=build_new_dlg(&callid, &from_uri, &to_uri, &from_tag))==0){
LM_ERR("failed to build new dialog\n");
goto error;
}
if(dlg->h_entry != VAL_INT(values)){
LM_ERR("inconsistent hash data in the dialog database: "
"you may have restarted opensips using a different "
"hash_size: please erase %.*s database and restart\n",
dialog_table_name.len, dialog_table_name.s);
shm_free(dlg);
goto error;
}
/*link the dialog*/
link_dlg(dlg, 0);
dlg->h_id = VAL_INT(values+1);
next_id = d_table->entries[dlg->h_entry].next_id;
d_table->entries[dlg->h_entry].next_id =
(next_id < dlg->h_id) ? (dlg->h_id+1) : next_id;
GET_STR_VALUE(to_tag, values, 6, 1, 1);
dlg->start_ts = VAL_INT(values+7);
dlg->state = VAL_INT(values+8);
if (dlg->state==DLG_STATE_CONFIRMED_NA ||
dlg->state==DLG_STATE_CONFIRMED) {
active_dlgs_cnt++;
} else if (dlg->state==DLG_STATE_EARLY) {
early_dlgs_cnt++;
}
GET_STR_VALUE(cseq1, values, 10 , 1, 1);
GET_STR_VALUE(cseq2, values, 11 , 1, 1);
GET_STR_VALUE(rroute1, values, 12, 0, 0);
GET_STR_VALUE(rroute2, values, 13, 0, 0);
GET_STR_VALUE(contact1, values, 14, 0, 1);
GET_STR_VALUE(contact2, values, 15, 0, 1);
GET_STR_VALUE(mangled_fu, values, 24,0,1);
GET_STR_VALUE(mangled_tu, values, 25,0,1);
/* add the 2 legs */
if ( (dlg_add_leg_info( dlg, &from_tag, &rroute1, &contact1,
&cseq1, caller_sock,0,0)!=0) ||
(dlg_add_leg_info( dlg, &to_tag, &rroute2, &contact2,
&cseq2, callee_sock,&mangled_fu,&mangled_tu)!=0) ) {
LM_ERR("dlg_set_leg_info failed\n");
/* destroy the dialog */
unref_dlg(dlg,1);
continue;
}
dlg->legs_no[DLG_LEG_200OK] = DLG_FIRST_CALLEE_LEG;
/* script variables */
if (!VAL_NULL(values+18))
read_dialog_vars( VAL_STR(values+18).s,
VAL_STR(values+18).len, dlg);
/* profiles */
if (!VAL_NULL(values+19))
read_dialog_profiles( VAL_STR(values+19).s,
strlen(VAL_STR(values+19).s), dlg,0);
/* script flags */
if (!VAL_NULL(values+20)) {
dlg->user_flags = VAL_INT(values+20);
}
/* top hiding */
dlg->flags = VAL_INT(values+23);
if (dlg_db_mode==DB_MODE_SHUTDOWN)
dlg->flags |= DLG_FLAG_NEW;
/* calculcate timeout */
dlg->tl.timeout = (unsigned int)(VAL_INT(values+9)) + get_ticks();
if (dlg->tl.timeout<=(unsigned int)time(0))
dlg->tl.timeout = 0;
else
dlg->tl.timeout -= (unsigned int)time(0);
/* restore the timer values */
if (0 != insert_dlg_timer( &(dlg->tl), (int)dlg->tl.timeout )) {
LM_CRIT("Unable to insert dlg %p [%u:%u] "
"with clid '%.*s' and tags '%.*s' '%.*s'\n",
dlg, dlg->h_entry, dlg->h_id,
dlg->callid.len, dlg->callid.s,
dlg->legs[DLG_CALLER_LEG].tag.len,
dlg->legs[DLG_CALLER_LEG].tag.s,
dlg->legs[callee_idx(dlg)].tag.len,
ZSW(dlg->legs[callee_idx(dlg)].tag.s));
/* destroy the dialog */
unref_dlg(dlg,1);
continue;
}
/* reference the dialog as kept in the timer list */
ref_dlg(dlg,1);
LM_DBG("current dialog timeout is %u\n", dlg->tl.timeout);
dlg->lifetime = 0;
dlg->legs[DLG_CALLER_LEG].last_gen_cseq =
(unsigned int)(VAL_INT(values+21));
dlg->legs[callee_idx(dlg)].last_gen_cseq =
(unsigned int)(VAL_INT(values+22));
if (dlg->flags & DLG_FLAG_PING_CALLER || dlg->flags & DLG_FLAG_PING_CALLEE) {
if (0 != insert_ping_timer(dlg))
LM_CRIT("Unable to insert dlg %p into ping timer\n",dlg);
else {
/* reference dialog as kept in ping timer list */
ref_dlg(dlg,1);
}
}
next_dialog:
;
}
/* any more data to be fetched ?*/
if (DB_CAPABILITY(dialog_dbf, DB_CAP_FETCH)) {
if (dialog_dbf.fetch_result( dialog_db_handle, &res,no_rows) < 0) {
LM_ERR("fetching more rows failed\n");
goto error;
}
nr_rows = RES_ROW_N(res);
} else {
nr_rows = 0;
}
}while (nr_rows>0);
end:
dialog_dbf.free_result(dialog_db_handle, res);
return 0;
error:
dialog_dbf.free_result(dialog_db_handle, res);
return -1;
}
static int sync_dlg_db_mem(void)
{
db_res_t * res;
db_val_t * values;
db_row_t * rows;
struct dlg_entry *d_entry;
struct dlg_cell *it,*known_dlg,*dlg=NULL;
int i, nr_rows,callee_leg_idx,next_id,db_timeout;
int no_rows = 10;
unsigned int db_caller_cseq,db_callee_cseq,dlg_caller_cseq,dlg_callee_cseq;
struct socket_info *caller_sock,*callee_sock;
str callid, from_uri, to_uri, from_tag, to_tag;
str cseq1,cseq2,contact1,contact2,rroute1,rroute2,mangled_fu,mangled_tu;
res = 0;
if((nr_rows = select_entire_dialog_table(&res,&no_rows)) < 0)
goto error;
nr_rows = RES_ROW_N(res);
do {
LM_DBG("loading information from database for %i dialogs\n", nr_rows);
rows = RES_ROWS(res);
/* for every row---dialog */
for(i=0; i<nr_rows; i++){
values = ROW_VALUES(rows + i);
if (VAL_NULL(values) || VAL_NULL(values+1)) {
LM_ERR("columns %.*s or/and %.*s cannot be null -> skipping\n",
h_entry_column.len, h_entry_column.s,
h_id_column.len, h_id_column.s);
continue;
}
if (VAL_NULL(values+7) || VAL_NULL(values+8)) {
LM_ERR("columns %.*s or/and %.*s cannot be null -> skipping\n",
start_time_column.len, start_time_column.s,
state_column.len, state_column.s);
continue;
}
if ( VAL_INT(values+8) == DLG_STATE_DELETED ) {
LM_DBG("dialog already terminated -> skipping\n");
continue;
}
/*restore the dialog info*/
GET_STR_VALUE(callid, values, 2, 1, 0);
GET_STR_VALUE(from_tag, values, 4, 1, 0);
GET_STR_VALUE(to_tag, values, 6, 1, 1);
/* TODO - check about hash resize ? maybe hash was lowered & we overflow the hash */
known_dlg = 0;
d_entry = &(d_table->entries[VAL_INT(values)]);
for (it=d_entry->first;it;it=it->next)
if (it->callid.len == callid.len &&
it->legs[DLG_CALLER_LEG].tag.len == from_tag.len &&
memcmp(it->callid.s,callid.s,callid.len)==0 &&
memcmp(it->legs[DLG_CALLER_LEG].tag.s,from_tag.s,from_tag.len)==0) {
/* callid & ftag match */
callee_leg_idx = callee_idx(it);
if (it->legs[callee_leg_idx].tag.len == to_tag.len &&
memcmp(it->legs[callee_leg_idx].tag.s,to_tag.s,to_tag.len)==0) {
/* full dlg match */
known_dlg = it;
break;
}
}
if (known_dlg == 0) {
LM_DBG("First seen dialog - load all stuff - callid = [%.*s]\n",callid.len,callid.s);
GET_STR_VALUE(from_uri, values, 3, 1, 0);
GET_STR_VALUE(to_uri, values, 5, 1, 0);
caller_sock = create_socket_info(values, 16);
callee_sock = create_socket_info(values, 17);
if (caller_sock == NULL || callee_sock == NULL) {
LM_ERR("Dialog in DB doesn't match any listening sockets");
continue;
}
/* first time we see this dialog - build it from scratch */
if((dlg=build_new_dlg(&callid, &from_uri, &to_uri, &from_tag))==0){
LM_ERR("failed to build new dialog\n");
goto error;
}
if(dlg->h_entry != VAL_INT(values)){
LM_ERR("inconsistent hash data in the dialog database: "
"you may have restarted opensips using a different "
"hash_size: please erase %.*s database and restart\n",
dialog_table_name.len, dialog_table_name.s);
shm_free(dlg);
goto error;
}
/*link the dialog*/
link_dlg(dlg, 0);
dlg->h_id = VAL_INT(values+1);
next_id = d_table->entries[dlg->h_entry].next_id;
d_table->entries[dlg->h_entry].next_id =
(next_id < dlg->h_id) ? (dlg->h_id+1) : next_id;
dlg->start_ts = VAL_INT(values+7);
dlg->state = VAL_INT(values+8);
if (dlg->state==DLG_STATE_CONFIRMED_NA ||
dlg->state==DLG_STATE_CONFIRMED) {
if_update_stat(dlg_enable_stats, active_dlgs, 1);
} else if (dlg->state==DLG_STATE_EARLY) {
if_update_stat(dlg_enable_stats, early_dlgs, 1);
}
GET_STR_VALUE(cseq1, values, 10 , 1, 1);
GET_STR_VALUE(cseq2, values, 11 , 1, 1);
GET_STR_VALUE(rroute1, values, 12, 0, 0);
GET_STR_VALUE(rroute2, values, 13, 0, 0);
GET_STR_VALUE(contact1, values, 14, 0, 1);
GET_STR_VALUE(contact2, values, 15, 0, 1);
GET_STR_VALUE(mangled_fu, values, 24,0,1);
GET_STR_VALUE(mangled_tu, values, 25,0,1);
/* add the 2 legs */
if ( (dlg_add_leg_info( dlg, &from_tag, &rroute1, &contact1,
&cseq1, caller_sock,0,0)!=0) ||
(dlg_add_leg_info( dlg, &to_tag, &rroute2, &contact2,
&cseq2, callee_sock,&mangled_fu,&mangled_tu)!=0) ) {
LM_ERR("dlg_set_leg_info failed\n");
/* destroy the dialog */
unref_dlg(dlg,1);
continue;
}
dlg->legs_no[DLG_LEG_200OK] = DLG_FIRST_CALLEE_LEG;
/* script variables */
if (!VAL_NULL(values+18))
read_dialog_vars( VAL_STR(values+18).s,
VAL_STR(values+18).len, dlg);
/* profiles */
if (!VAL_NULL(values+19))
read_dialog_profiles( VAL_STR(values+19).s,
strlen(VAL_STR(values+19).s), dlg,0);
/* script flags */
if (!VAL_NULL(values+20)) {
dlg->user_flags = VAL_INT(values+20);
}
/* top hiding */
dlg->flags = VAL_INT(values+23);
if (dlg_db_mode==DB_MODE_SHUTDOWN)
dlg->flags |= DLG_FLAG_NEW;
/* calculcate timeout */
dlg->tl.timeout = (unsigned int)(VAL_INT(values+9)) + get_ticks();
if (dlg->tl.timeout<=(unsigned int)time(0))
dlg->tl.timeout = 0;
else
dlg->tl.timeout -= (unsigned int)time(0);
/* restore the timer values */
if (0 != insert_dlg_timer( &(dlg->tl), (int)dlg->tl.timeout )) {
LM_CRIT("Unable to insert dlg %p [%u:%u] "
"with clid '%.*s' and tags '%.*s' '%.*s'\n",
dlg, dlg->h_entry, dlg->h_id,
dlg->callid.len, dlg->callid.s,
dlg->legs[DLG_CALLER_LEG].tag.len,
dlg->legs[DLG_CALLER_LEG].tag.s,
dlg->legs[callee_idx(dlg)].tag.len,
ZSW(dlg->legs[callee_idx(dlg)].tag.s));
/* destroy the dialog */
unref_dlg(dlg,1);
continue;
}
/* reference the dialog as kept in the timer list */
ref_dlg(dlg,1);
LM_DBG("current dialog timeout is %u\n", dlg->tl.timeout);
dlg->lifetime = 0;
dlg->legs[DLG_CALLER_LEG].last_gen_cseq =
(unsigned int)(VAL_INT(values+21));
dlg->legs[callee_idx(dlg)].last_gen_cseq =
(unsigned int)(VAL_INT(values+22));
if (dlg->flags & DLG_FLAG_PING_CALLER || dlg->flags & DLG_FLAG_PING_CALLEE) {
if (0 != insert_ping_timer(dlg))
LM_CRIT("Unable to insert dlg %p into ping timer\n",dlg);
else {
/* reference dialog as kept in ping timer list */
ref_dlg(dlg,1);
}
}
} else {
/* we already saw this dialog before
* check which is the newer version */
if (known_dlg->state > VAL_INT(values+8)) {
LM_DBG("mem has a newer state - ignore \n");
/* we know a newer version compared to the DB
* ignore it */
goto next_dialog;
} else if (known_dlg->state == VAL_INT(values+8)) {
LM_DBG("mem has same state as DB \n");
/* same state :-( no way to tell which is newer */
/* play nice and store longest timeout, although not always correct*/
db_timeout = (unsigned int)(VAL_INT(values+9)) +
get_ticks();
if (db_timeout<=(unsigned int)time(0))
db_timeout = 0;
else
db_timeout -= (unsigned int)time(0);
if (known_dlg->tl.timeout < db_timeout)
known_dlg->tl.timeout = db_timeout;
/* check with is newer cseq for caller leg */
if (!VAL_NULL(values+10)) {
cseq1.s = VAL_STR(values+10).s;
cseq1.len = strlen(cseq1.s);
str2int(&cseq1,&db_caller_cseq);
str2int(&known_dlg->legs[DLG_CALLER_LEG].r_cseq,&dlg_caller_cseq);
/* Is DB cseq newer ? */
if (db_caller_cseq > dlg_caller_cseq) {
if (known_dlg->legs[DLG_CALLER_LEG].r_cseq.len < cseq1.len) {
known_dlg->legs[DLG_CALLER_LEG].r_cseq.s =
shm_realloc(known_dlg->legs[DLG_CALLER_LEG].r_cseq.s,cseq1.len);
if (!known_dlg->legs[DLG_CALLER_LEG].r_cseq.s) {
LM_ERR("no more shm\n");
goto next_dialog;
}
}
memcpy(known_dlg->legs[DLG_CALLER_LEG].r_cseq.s,cseq1.s,cseq1.len);
known_dlg->legs[DLG_CALLER_LEG].r_cseq.len = cseq1.len;
}
} else {
/* DB has a null cseq - just keep
* what we have so far */
;
}
/* check with is newer cseq for caller leg */
if (!VAL_NULL(values+11)) {
cseq2.s = VAL_STR(values+11).s;
cseq2.len = strlen(cseq2.s);
callee_leg_idx = callee_idx(known_dlg);
str2int(&cseq2,&db_callee_cseq);
str2int(&known_dlg->legs[callee_leg_idx].r_cseq,&dlg_callee_cseq);
/* Is DB cseq newer ? */
if (db_callee_cseq > dlg_callee_cseq) {
if (known_dlg->legs[callee_leg_idx].r_cseq.len < cseq2.len) {
known_dlg->legs[callee_leg_idx].r_cseq.s =
shm_realloc(known_dlg->legs[callee_leg_idx].r_cseq.s,cseq2.len);
if (!known_dlg->legs[callee_leg_idx].r_cseq.s) {
LM_ERR("no more shm\n");
goto next_dialog;
}
}
memcpy(known_dlg->legs[callee_leg_idx].r_cseq.s,cseq2.s,cseq2.len);
known_dlg->legs[callee_leg_idx].r_cseq.len = cseq2.len;
}
} else {
/* DB has a null cseq - just keep
* what we have so far */
;
}
/* update ping cseqs, whichever is newer */
if (known_dlg->legs[DLG_CALLER_LEG].last_gen_cseq <
(unsigned int)(VAL_INT(values+21)))
known_dlg->legs[DLG_CALLER_LEG].last_gen_cseq =
(unsigned int)(VAL_INT(values+21));
if (known_dlg->legs[callee_idx(known_dlg)].last_gen_cseq <
(unsigned int)(VAL_INT(values+22)))
known_dlg->legs[callee_idx(known_dlg)].last_gen_cseq =
(unsigned int)(VAL_INT(values+22));
/* update script variables
* if already found, delete the old ones
* and replace with new one */
if (!VAL_NULL(values+18))
read_dialog_vars( VAL_STR(values+18).s,
VAL_STR(values+18).len, known_dlg);
/* skip flags - keep what we have - anyway can't tell which is new */
/* profiles - do not insert into a profile
* is dlg is already in that profile*/
if (!VAL_NULL(values+19))
read_dialog_profiles( VAL_STR(values+19).s,
strlen(VAL_STR(values+19).s), known_dlg,1);
} else {
/* DB has newer state, just update fields from DB */
LM_DBG("DB has newer state \n");
/* set new state */
known_dlg->state = VAL_INT(values+8);
/* update timeout */
known_dlg->tl.timeout = (unsigned int)(VAL_INT(values+9)) +
get_ticks();
if (known_dlg->tl.timeout<=(unsigned int)time(0))
known_dlg->tl.timeout = 0;
else
known_dlg->tl.timeout -= (unsigned int)time(0);
/* update cseqs */
if (!VAL_NULL(values+10)) {
cseq1.s = VAL_STR(values+10).s;
cseq1.len = strlen(cseq1.s);
if (known_dlg->legs[DLG_CALLER_LEG].r_cseq.len < cseq1.len) {
known_dlg->legs[DLG_CALLER_LEG].r_cseq.s =
shm_realloc(known_dlg->legs[DLG_CALLER_LEG].r_cseq.s,cseq1.len);
if (!known_dlg->legs[DLG_CALLER_LEG].r_cseq.s) {
LM_ERR("no more shm\n");
goto next_dialog;
}
}
memcpy(known_dlg->legs[DLG_CALLER_LEG].r_cseq.s,cseq1.s,cseq1.len);
known_dlg->legs[DLG_CALLER_LEG].r_cseq.len = cseq1.len;
}
if (!VAL_NULL(values+11)) {
cseq2.s = VAL_STR(values+11).s;
cseq2.len = strlen(cseq1.s);
callee_leg_idx = callee_idx(known_dlg);
if (known_dlg->legs[callee_leg_idx].r_cseq.len < cseq2.len) {
known_dlg->legs[callee_leg_idx].r_cseq.s =
shm_realloc(known_dlg->legs[callee_leg_idx].r_cseq.s,cseq2.len);
if (!known_dlg->legs[callee_leg_idx].r_cseq.s) {
LM_ERR("no more shm\n");
goto next_dialog;
}
}
memcpy(known_dlg->legs[callee_leg_idx].r_cseq.s,cseq2.s,cseq2.len);
known_dlg->legs[callee_leg_idx].r_cseq.len = cseq2.len;
}
/* update ping cseqs */
known_dlg->legs[DLG_CALLER_LEG].last_gen_cseq =
(unsigned int)(VAL_INT(values+21));
known_dlg->legs[callee_idx(known_dlg)].last_gen_cseq =
(unsigned int)(VAL_INT(values+22));
/* update flags */
known_dlg->flags = VAL_INT(values+23);
if (dlg_db_mode==DB_MODE_SHUTDOWN)
known_dlg->flags |= DLG_FLAG_NEW;
/* update script variables
* if already found, delete the old one
* and replace with new one */
if (!VAL_NULL(values+18))
read_dialog_vars( VAL_STR(values+18).s,
VAL_STR(values+18).len, known_dlg);
/* profiles - do not insert into a profile
* is dlg is already in that profile*/
if (!VAL_NULL(values+19))
read_dialog_profiles( VAL_STR(values+19).s,
strlen(VAL_STR(values+19).s), known_dlg,1);
}
}
next_dialog:
;
}
/* any more data to be fetched ?*/
if (DB_CAPABILITY(dialog_dbf, DB_CAP_FETCH)) {
if (dialog_dbf.fetch_result( dialog_db_handle, &res,no_rows) < 0) {
LM_ERR("fetching more rows failed\n");
goto error;
}
nr_rows = RES_ROW_N(res);
} else {
nr_rows = 0;
}
}while (nr_rows>0);
return 0;
error:
return -1;
}
int dlg_create_dialog(struct cell* t, struct sip_msg *req,unsigned int flags)
{
struct dlg_cell *dlg;
str s;
int extra_ref;
/* module is stricly designed for dialog calls */
if (req->first_line.u.request.method_value!=METHOD_INVITE)
return -1;
if ( (!req->to && parse_headers(req, HDR_TO_F,0)<0) || !req->to ) {
LM_ERR("bad request or missing TO hdr :-/\n");
return -1;
}
s = get_to(req)->tag_value;
if (s.s!=0 && s.len!=0)
return -1;
if ( parse_from_header(req)) {
LM_ERR("bad request or missing FROM hdr :-/\n");
return -1;
}
if ((!req->callid && parse_headers(req,HDR_CALLID_F,0)<0) || !req->callid){
LM_ERR("bad request or missing CALLID hdr :-/\n");
return -1;
}
s = req->callid->body;
trim(&s);
/* some sanity checks */
if (s.len==0 || get_from(req)->tag_value.len==0) {
LM_ERR("invalid request -> callid (%d) or from TAG (%d) empty\n",
s.len, get_from(req)->tag_value.len);
return -1;
}
dlg = build_new_dlg( &s /*callid*/, &(get_from(req)->uri) /*from uri*/,
&(get_to(req)->uri) /*to uri*/,
&(get_from(req)->tag_value)/*from_tag*/ );
if (dlg==0) {
LM_ERR("failed to create new dialog\n");
return -1;
}
dlg->flags |= flags;
/* save caller's tag, cseq, contact and record route*/
if (init_leg_info(dlg, req, t, &(get_from(req)->tag_value),NULL,NULL ) !=0) {
LM_ERR("could not add further info to the dialog\n");
shm_free(dlg);
return -1;
}
/* set current dialog */
set_current_dialog(dlg);
last_dst_leg = DLG_FIRST_CALLEE_LEG;
extra_ref=2; /* extra ref for the callback and current dlg hook */
if (dlg_db_mode == DB_MODE_DELAYED)
extra_ref++; /* extra ref for the timer to delete the dialog */
link_dlg( dlg , extra_ref);
if ( seq_match_mode!=SEQ_MATCH_NO_ID &&
add_dlg_rr_param( req, dlg->h_entry, dlg->h_id)<0 ) {
LM_ERR("failed to add RR param\n");
goto error;
}
if ( d_tmb.register_tmcb( req, t,
TMCB_RESPONSE_PRE_OUT|TMCB_RESPONSE_FWDED|TMCB_TRANS_CANCELLED,
dlg_onreply, (void*)dlg, unreference_dialog_create)<0 ) {
LM_ERR("failed to register TMCB\n");
goto error;
}
/* complete the dialog setup only if transaction aleady exists;
if not, wait for the TMCB_REQUEST_IN callback to do this job */
if (t) {
/* first INVITE seen (dialog created, unconfirmed) */
run_create_callbacks( dlg, req);
LM_DBG("t hash_index = %u, t label = %u\n",t->hash_index,t->label);
dlg->initial_t_hash_index = t->hash_index;
dlg->initial_t_label = t->label;
dlg->lifetime = get_dlg_timeout(req);
t->dialog_ctx = (void*) dlg;
dlg->flags |= DLG_FLAG_ISINIT;
}
if_update_stat( dlg_enable_stats, processed_dlgs, 1);
return 0;
error:
unref_dlg(dlg,2);
dialog_cleanup( req, NULL);
if_update_stat(dlg_enable_stats, failed_dlgs, 1);
return -1;
}
