static inline int create_headers(struct watcher* _w, str *dst, str *content_type)
{
dstring_t buf;
time_t t;
int err = 0;
dstr_init(&buf, 256);
str_clear(dst);
/* required by RFC 3261 */
dstr_append_zt(&buf, "Max-Forwards: 70\r\n");
/* Event header */
dstr_append_zt(&buf, "Event: ");
dstr_append_zt(&buf, event_package2str(_w->event_package));
dstr_append_zt(&buf, "\r\n");
/* Content-Type header */
/* content types can have dynamical parameters (multipart/related)
* => don't generate them "staticaly"; use values created in the
* time of document creation */
if (!is_str_empty(content_type)) { /* documents without body doesn't need it */
dstr_append_zt(&buf, "Content-Type: ");
dstr_append_str(&buf, content_type);
dstr_append_zt(&buf, "\r\n");
}
/* Contact header */
if (is_str_empty(&_w->server_contact)) {
LOG(L_WARN, "add_contact_hf(): Can't add empty contact to NOTIFY.\n");
}
else {
dstr_append_zt(&buf, "Contact: ");
dstr_append_str(&buf, &_w->server_contact);
dstr_append_zt(&buf, "\r\n");
}
/* Subscription-State header */
if (_w->expires) t = _w->expires - time(0);
else t = 0;
if (add_subs_state_hf(&buf, _w->status, t) < 0) {
LOG(L_ERR, "create_headers(): Error while adding Subscription-State\n");
dstr_destroy(&buf);
return -3;
}
err = dstr_get_str(&buf, dst);
dstr_destroy(&buf);
return err;
}
static int prepare_winfo_notify(struct retr_buf **dst,
struct presentity* _p, struct watcher* _w,
pa_notify_cb_param_t *cbd)
{
str doc = STR_NULL;
str content_type = STR_NULL;
str headers = STR_NULL;
int res = 0;
str body = STR_STATIC_INIT("");
uac_req_t uac_r;
switch (_w->preferred_mimetype) {
case DOC_WINFO:
create_winfo_document(_p, _w, &doc, &content_type);
DEBUG("winfo document created\n");
break;
/* other formats ? */
default:
ERR("unknow doctype\n");
return -1;
}
if (create_headers(_w, &headers, &content_type) < 0) {
ERR("Error while adding headers\n");
str_free_content(&doc);
str_free_content(&content_type);
return -7;
}
if (!is_str_empty(&doc)) body = doc;
/* res = tmb.t_request_within(¬ify, &headers, &body, _w->dialog, 0, 0); */
set_uac_req(&uac_r,
¬ify,
&headers,
&body,
_w->dialog,
TMCB_LOCAL_COMPLETED,
pa_notify_cb,
cbd
);
res = tmb.prepare_request_within(&uac_r, dst);
if (res < 0) {
ERR("Can't send watcherinfo notification (%d)\n", res);
}
else {
_w->document_index++; /* increment index for next document */
}
str_free_content(&doc);
str_free_content(&headers);
str_free_content(&content_type);
return res;
}
int send_winfo_notify_offline(struct presentity* _p,
struct watcher* _w,
offline_winfo_t *info,
transaction_cb completion_cb, void* cbp)
{
str doc = STR_NULL;
str content_type = STR_NULL;
str headers = STR_NULL;
str body = STR_STATIC_INIT("");
uac_req_t uac_r;
switch (_w->preferred_mimetype) {
case DOC_WINFO:
create_winfo_document_offline(_p, _w, info, &doc, &content_type);
break;
/* other formats ? */
default:
ERR("send_winfo_notify: unknow doctype\n");
return -1;
}
if (create_headers(_w, &headers, &content_type) < 0) {
ERR("send_winfo_notify(): Error while adding headers\n");
str_free_content(&doc);
str_free_content(&content_type);
return -7;
}
if (!is_str_empty(&doc)) body = doc;
set_uac_req(&uac_r,
¬ify,
&headers,
&body,
_w->dialog,
TMCB_LOCAL_COMPLETED,
completion_cb,
cbp
);
tmb.t_request_within(&uac_r);
str_free_content(&doc);
str_free_content(&headers);
str_free_content(&content_type);
_w->document_index++; /* increment index for next document */
if (use_db) db_update_watcher(_p, _w); /* dialog and index have changed */
return 0;
}
static inline int add_cont_type_hf(dstring_t *buf, str *content_type)
{
/* content types can have dynamical parameters (multipart/related)
* => don't generate them "staticaly"; use values created in the
* time of document creation */
if (is_str_empty(content_type)) return 0; /* documents without body doesn't need it */
dstr_append_zt(buf, "Content-Type: ");
dstr_append_str(buf, content_type);
dstr_append_zt(buf, "\r\n");
return 0;
}
int preset_dialog_route(dlg_t* dialog, str *route)
{
rr_t *old_r, *r = NULL;
int res;
/* check parameters */
if ((!dialog) || (is_str_empty(route))) {
ERR("bad parameters\n");
return -1;
}
if (dialog->state != DLG_NEW) {
ERR("Dialog is not in DLG_NEW state\n");
return -1;
}
if (parse_rr_body(route->s, route->len, &r) < 0) {
ERR("can't parse given route\n");
return -1;
}
if (!r) {
ERR("empty route\n");
return -1;
}
old_r = dialog->route_set;
dialog->route_set = NULL;
res = shm_duplicate_rr(&dialog->route_set, r);
if (r) free_rr(&r);
if (res < 0) {
/* return old routeset to its place */
dialog->route_set = old_r;
ERR("can't duplicate route\n");
return -1;
}
/* free old route */
if (old_r) shm_free_rr(&old_r);
res = tmb.calculate_hooks(dialog);
if (res < 0) {
ERR("Error while calculating hooks\n");
return -2;
}
return 0;
}
static int rls_generate_notify_ext(rl_subscription_t *s, int full_info)
{
/* !!! the main mutex must be locked here !!! */
int res;
str doc;
dstring_t dstr;
str headers, content_type;
static str method = STR_STATIC_INIT(METHOD_NOTIFY);
dlg_t *dlg;
int exp_time = 0;
char expiration[32];
str body = STR_STATIC_INIT("");
int removed = 0;
dlg = s->u.external.dialog;
if (!dlg) return -1;
DEBUG("generating external notify\n");
str_clear(&doc);
str_clear(&content_type);
if (sm_subscription_pending(&s->u.external) != 0) {
/* create the document only for non-pending subscriptions */
if (create_rlmi_document(&doc, &content_type, s, full_info) != 0) {
return -1;
}
}
exp_time = sm_subscription_expires_in(rls_manager, &s->u.external);
sprintf(expiration, ";expires=%d\r\n", exp_time);
dstr_init(&dstr, 256);
dstr_append_zt(&dstr, "Subscription-State: ");
switch (s->u.external.status) {
case subscription_active:
dstr_append_zt(&dstr, "active");
dstr_append_zt(&dstr, expiration);
break;
case subscription_pending:
dstr_append_zt(&dstr, "pending");
dstr_append_zt(&dstr, expiration);
break;
case subscription_terminated_pending:
case subscription_terminated:
dstr_append_zt(&dstr, "terminated\r\n");
break;
case subscription_terminated_pending_to:
case subscription_terminated_to:
dstr_append_zt(&dstr,
"terminated;reason=timeout\r\n");
break;
case subscription_uninitialized:
dstr_append_zt(&dstr, "pending\r\n");
/* this is an error ! */
LOG(L_ERR, "sending NOTIFY for an unitialized subscription!\n");
break;
}
dstr_append_str(&dstr, &s->u.external.contact);
/* required by RFC 3261 */
dstr_append_zt(&dstr, "Max-Forwards: 70\r\n");
dstr_append_zt(&dstr, "Event: ");
dstr_append_str(&dstr, rls_get_package(s));
dstr_append_zt(&dstr, "\r\n");
dstr_append_zt(&dstr, "Require: eventlist\r\nContent-Type: ");
dstr_append_str(&dstr, &content_type);
dstr_append_zt(&dstr, "\r\n");
res = dstr_get_str(&dstr, &headers);
dstr_destroy(&dstr);
if (res >= 0) {
/* DEBUG("sending NOTIFY message to %.*s (subscription %p)\n",
dlg->rem_uri.len,
ZSW(dlg->rem_uri.s), s); */
if (!is_str_empty(&doc)) body = doc;
if (sm_subscription_terminated(&s->u.external) == 0) {
/* doesn't matter if delivered or not, it will be freed otherwise !!! */
res = tmb.t_request_within(&method, &headers, &body, dlg, 0, 0);
if (res >= 0) clear_change_flags(s);
}
else {
rls_notify_cb_param_t *cbd = create_notify_cb_param(s);
if (!cbd) {
ERR("Can't create notify cb data! Freeing RL subscription.\n");
rls_remove(s); /* ?????? */
removed = 1;
res = -13;
}
else {
/* the subscritpion will be destroyed if NOTIFY delivery problems */
/* rls_unlock(); the callback locks this mutex ! */
/* !!!! FIXME: callbacks can't be safely used (may be called or not,
* may free memory automaticaly or not) !!! */
res = tmb.t_request_within(&method, &headers, &body, dlg, rls_notify_cb, cbd);
/* res = tmb.t_request_within(&method, &headers, &body, dlg, rls_notify_cb, s); */
/* rls_lock(); the callback locks this mutex ! */
if (res < 0) {
/* does this mean, that the callback was not called ??? */
ERR("t_request_within FAILED: %d! Freeing RL subscription.\n", res);
rls_remove(s); /* ?????? */
removed = 1;
}
else clear_change_flags(s);
}
}
}
if (doc.s) cds_free(doc.s);
if (content_type.s) cds_free(content_type.s);
if (headers.s) cds_free(headers.s);
if ((!removed) && use_db) rls_db_update(s);
if (res < 0) DEBUG("external notify NOT generated\n");
else DEBUG("external notify generated\n");
return res;
}
static int prepare_presence_notify(struct retr_buf **dst,
struct presentity* _p, struct watcher* _w,
pa_notify_cb_param_t *cbd)
{
/* Send a notify, saved Contact will be put in
* Request-URI, To will be put in from and new tag
* will be generated, callid will be callid,
* from will be put in to including tag
*/
str doc = STR_NULL;
str content_type = STR_NULL;
str headers = STR_NULL;
str body = STR_STATIC_INIT("");
int res = 0;
uac_req_t uac_r;
switch(_w->preferred_mimetype) {
case DOC_XPIDF:
res = create_xpidf_document(&_p->data, &doc, &content_type);
break;
case DOC_LPIDF:
res = create_lpidf_document(&_p->data, &doc, &content_type);
break;
case DOC_CPIM_PIDF:
res = create_cpim_pidf_document(&_p->data, &doc, &content_type);
break;
case DOC_MSRTC_PIDF:
case DOC_PIDF:
default:
res = create_pidf_document(&_p->data, &doc, &content_type);
}
if (res != 0) {
LOG(L_ERR, "can't create presence document (%d)\n", _w->preferred_mimetype);
return -2;
}
if (create_headers(_w, &headers, &content_type) < 0) {
LOG(L_ERR, "send_presence_notify(): Error while adding headers\n");
str_free_content(&doc);
str_free_content(&content_type);
return -7;
}
if (!is_str_empty(&doc)) body = doc;
/* res = tmb.t_request_within(¬ify, &headers, &body,
_w->dialog, pa_notify_cb, cbd);*/
set_uac_req(&uac_r,
¬ify,
&headers,
&body,
_w->dialog,
TMCB_LOCAL_COMPLETED,
pa_notify_cb,
cbd
);
res = tmb.prepare_request_within(&uac_r, dst);
if (res < 0) {
ERR("Can't send NOTIFY (%d) in dlg %.*s, %.*s, %.*s\n", res,
FMT_STR(_w->dialog->id.call_id),
FMT_STR(_w->dialog->id.rem_tag),
FMT_STR(_w->dialog->id.loc_tag));
}
str_free_content(&doc);
str_free_content(&headers);
str_free_content(&content_type);
return res;
}
