/** Add a Content-Length and separator to a message */
int http_message_complete(msg_t *msg, http_t *http)
{
#if 1
if (!http->http_content_length) {
http_content_length_t *l;
http_payload_t *pl;
size_t len = 0;
for (pl = http->http_payload; pl; pl = pl->pl_next)
len += pl->pl_len;
if (len > UINT32_MAX)
return -1;
l = http_content_length_create(msg_home(msg), (uint32_t)len);
if (msg_header_insert(msg, http, (http_header_t *)l) < 0)
return -1;
}
#endif
if (!http->http_separator) {
http_separator_t *sep = http_separator_create(msg_home(msg));
if (msg_header_insert(msg, http, (http_header_t *)sep) < 0)
return -1;
}
return 0;
}
/** Complete a HTTP request. */
int http_request_complete(msg_t *msg)
{
size_t len = 0;
http_t *http = http_object(msg);
http_payload_t const *pl;
su_home_t *home = msg_home(msg);
if (!http)
return -1;
if (!http->http_request)
return -1;
if (!http->http_host)
return -1;
for (pl = http->http_payload; pl; pl = pl->pl_next)
len += pl->pl_len;
if (len > UINT32_MAX)
return -1;
if (!http->http_content_length) {
http->http_content_length = http_content_length_create(home, (uint32_t)len);
}
else {
if (http->http_content_length->l_length != len) {
http->http_content_length->l_length = (uint32_t)len;
msg_fragment_clear(http->http_content_length->l_common);
}
}
if (!http->http_separator)
http->http_separator = http_separator_create(home);
return 0;
}
/** Copy a complete message, not keeping the header chain structure.
*
* @retval 0 when successful
* @retval -1 upon an error
*/
static
int msg_dup_or_copy_all(msg_t *msg,
msg_t const *original,
msg_header_t *(*copy_one)(su_home_t *h,
msg_header_t const *))
{
su_home_t *home = msg_home(msg);
msg_pub_t *dst = msg->m_object;
msg_pub_t const *src = original->m_object;
msg_header_t * const *ssh;
msg_header_t * const *end;
msg_header_t const *sh;
msg_header_t **hh;
msg_header_t *h;
assert(copy_one);
end = (msg_header_t**)((char *)src + src->msg_size);
for (ssh = &src->msg_request; ssh < end; ssh++) {
sh = *ssh;
if (!sh)
continue;
hh = msg_hclass_offset(msg->m_class, dst, sh->sh_class);
if (hh == NULL)
return -1;
for (; sh; sh = sh->sh_next) {
h = copy_one(home, sh);
if (h == NULL)
return -1;
if (*hh) {
/* If there is multiple instances of single headers,
put the extra headers into the list of erroneous headers */
if (msg_is_single(h)) {
msg_error_t **e;
for (e = &dst->msg_error; *e; e = &(*e)->er_next)
;
*e = (msg_error_t *)h;
continue;
}
while (*hh)
hh = &(*hh)->sh_next;
}
*hh = h;
if (msg_is_list(sh))
/* Copy only first list entry */
break;
}
}
return 0;
}
/** Add a duplicate of header object to a HTTP message. */
int http_add_dup(msg_t *msg,
http_t *http,
http_header_t const *o)
{
if (o == HTTP_NONE)
return 0;
if (msg == NULL || o == NULL)
return -1;
return msg_header_insert(msg, http, msg_header_dup(msg_home(msg), o));
}
int http_add_make(msg_t *msg,
http_t *http,
msg_hclass_t *hc,
char const *s)
{
if (s == NULL)
return 0;
if (msg == NULL)
return -1;
return msg_header_insert(msg, http, msg_header_make(msg_home(msg), hc, s));
}
/** Fork an outgoing request (stdarg version of nta_outgoing_fork()).
*
* @deprecated
* Use nta_outgoing_mcreate() instead.
*/
nta_outgoing_t *nta_outgoing_vfork(nta_outgoing_t *old_orq,
nta_response_f *callback,
nta_outgoing_magic_t *magic,
url_string_t const *route_url,
url_string_t const *request_uri,
void const *extra,
va_list headers)
{
nta_outgoing_t * orq;
msg_t *msg, *imsg;
sip_t *sip, *isip;
nta_agent_t *agent;
su_home_t *home;
if (!old_orq || !old_orq->orq_request || !request_uri)
return NULL;
agent = old_orq->orq_agent;
imsg = old_orq->orq_request;
if (!(msg = nta_msg_create(agent, 0)))
return NULL;
msg_clone(msg, imsg);
sip = sip_object(msg); isip = sip_object(imsg);
home = msg_home(msg);
/* Copy the SIP headers from the imsg message */
if (sip_copy_all(msg, sip, isip) < 0)
orq = NULL;
else if (sip_via_remove(msg, sip) == NULL)
orq = NULL;
else if (sip_add_dup(msg, sip_object(msg),
(sip_header_t const *)
sip_request_create(home,
sip->sip_request->rq_method,
sip->sip_request->rq_method_name,
request_uri,
NULL)) < 0)
orq = NULL;
else if (sip_add_headers(msg, sip, extra, headers) < 0)
orq = NULL;
else
orq = nta_outgoing_mcreate(agent, callback, magic, route_url, msg);
if (!orq)
msg_destroy(msg);
return orq;
}
/** Add headers from the request to the response message. */
int http_complete_response(msg_t *msg,
int status, char const *phrase,
http_t const *request)
{
su_home_t *home = msg_home(msg);
http_t *http = msg_object(msg);
if (!http || !request || !request->http_request)
return -1;
if (!http->http_status)
http->http_status = http_status_create(home, status, phrase, NULL);
if (!http->http_status)
return -1;
if (!http->http_separator) {
http_separator_t *sep = http_separator_create(msg_home(msg));
if (msg_header_insert(msg, http, (http_header_t *)sep) < 0)
return -1;
}
return 0;
}
/**@ingroup sip_route
*
* Get first route header and rewrite the RequestURI.
*/
sip_route_t *sip_route_follow(msg_t *msg, sip_t *sip)
{
if (sip->sip_route) {
/* XXX - in case of outbound proxy, route may contain our address */
sip_route_t *r = sip_route_remove(msg, sip);
sip_request_t *rq = sip->sip_request;
rq = sip_request_create(msg_home(msg), rq->rq_method, rq->rq_method_name,
(url_string_t const *)r->r_url, rq->rq_version);
url_strip_transport(rq->rq_url);
msg_header_insert(msg, (msg_pub_t *)sip, (msg_header_t *)rq);
return r;
}
return NULL;
}
/** Send a BYE to an INVITE.
*
* @deprecated
* This function should used only if application requires
* RFC2543 compatibility.
*/
nta_outgoing_t *nta_outgoing_tbye(nta_outgoing_t *orq,
nta_response_f *callback,
nta_outgoing_magic_t *magic,
url_string_t const *route_url,
tag_type_t tag, tag_value_t value, ...)
{
msg_t *msg;
sip_t *sip, *inv;
sip_cseq_t *cs;
sip_request_t *rq;
su_home_t *home;
url_string_t *url;
if (orq == NULL || orq->orq_method != sip_method_invite)
return NULL;
inv = sip_object(orq->orq_request);
msg = nta_msg_create(orq->orq_agent, 0);
home = msg_home(msg);
sip = sip_object(msg);
if (inv == NULL || sip == NULL) {
msg_destroy(msg);
return NULL;
}
sip_add_tl(msg, sip,
SIPTAG_TO(inv->sip_to),
SIPTAG_FROM(inv->sip_from),
SIPTAG_CALL_ID(inv->sip_call_id),
SIPTAG_ROUTE(inv->sip_route),
TAG_END());
url = (url_string_t *)inv->sip_request->rq_url;
rq = sip_request_create(home, SIP_METHOD_BYE, url, NULL);
sip_header_insert(msg, sip, (sip_header_t*)rq);
cs = sip_cseq_create(home, inv->sip_cseq->cs_seq + 1, SIP_METHOD_BYE);
sip_header_insert(msg, sip, (sip_header_t*)cs);
return nta_outgoing_mcreate(orq->orq_agent, callback, magic,
route_url, msg);
}
/* Return Via that looks very natted */
static sip_via_t *natted_via(struct message *m, const char *receive_natted)
{
su_home_t *h;
sip_via_t *via;
h = msg_home(m->msg);
via = sip_via_dup(h, m->sip->sip_via);
msg_header_replace_param(h, via->v_common, receive_natted);
if (via->v_protocol == sip_transport_udp)
msg_header_replace_param(h, via->v_common, "rport=9");
if (via->v_protocol == sip_transport_tcp && via->v_rport) {
tp_name_t const *tpn = tport_name(m->tport);
char *rport = su_sprintf(h, "rport=%s", tpn->tpn_port);
msg_header_replace_param(h, via->v_common, rport);
}
return via;
}
int http_add_format(msg_t *msg,
http_t *http,
msg_hclass_t *hc,
char const *fmt,
...)
{
http_header_t *h;
va_list ap;
if (fmt == NULL)
return 0;
if (msg == NULL)
return -1;
va_start(ap, fmt);
h = http_header_vformat(msg_home(msg), hc, fmt, ap);
va_end(ap);
return msg_header_insert(msg, http, h);
}
/** Copy header chain.
*
* @retval 0 when successful
* @retval -1 upon an error
*/
static
int msg_copy_chain(msg_t *msg, msg_t const *original)
{
su_home_t *home = msg_home(msg);
msg_pub_t *dst = msg->m_object;
msg_header_t **tail;
msg_header_t *dh;
msg_header_t const *sh;
msg_header_t **hh;
tail = msg->m_tail;
for (sh = original->m_chain; sh; sh = (msg_header_t const *)sh->sh_succ) {
hh = msg_hclass_offset(msg->m_class, dst, sh->sh_class);
if (!hh)
break;
while (*hh)
hh = &(*hh)->sh_next;
dh = msg_header_copy_one(home, sh);
if (!dh)
break;
dh->sh_prev = tail, *tail = dh, tail = &dh->sh_succ;
*hh = dh;
}
msg->m_tail = tail;
if (sh)
return -1;
return 0;
}
/** Respond without creating a request structure */
static void server_reply(server_t *srv, tport_t *tport,
msg_t *request, msg_t *response,
int status, char const *phrase)
{
http_t *http;
http_payload_t *pl;
int close;
http_status_t st[1];
char const *req_version = NULL;
if (status < 200 || status >= 600)
status = 500, phrase = http_500_internal_server;
http = http_object(request);
if (http && http->http_request)
req_version = http->http_request->rq_version;
close = status >= 200 &&
(!srv->srv_persistent
|| status == 400
|| (http && http->http_request &&
http->http_request->rq_version != http_version_1_1)
|| (http && http->http_connection &&
msg_params_find(http->http_connection->k_items, "close")));
msg_destroy(request);
http = http_object(response);
pl = http_payload_format(msg_home(response),
"<html>\n"
"<head><title>%u %s</title></head>\n"
"<body><h2>%u %s</h2></body>\n"
"</html>\n", status, phrase, status, phrase);
msg_header_insert(response, (msg_pub_t *)http, (msg_header_t *)pl);
if (req_version != http_version_0_9) {
http_status_init(st);
st->st_version = http_version_1_1;
st->st_status = status;
st->st_phrase = phrase;
http_add_tl(response, http,
HTTPTAG_STATUS(st),
HTTPTAG_SERVER(srv->srv_server),
HTTPTAG_CONTENT_TYPE_STR("text/html"),
HTTPTAG_SEPARATOR_STR("\r\n"),
TAG_IF(close, HTTPTAG_CONNECTION_STR("close")),
TAG_END());
msg_serialize(response, (msg_pub_t *)http);
} else {
/* Just send the response */
*msg_chain_head(response) = (msg_header_t *)pl;
close = 1;
}
if (tport_tqsend(tport, response, NULL,
TPTAG_CLOSE_AFTER(close),
TAG_END()) == -1) {
SU_DEBUG_3(("server_reply(): cannot queue response\n"));
tport_shutdown(tport, 2);
}
msg_destroy(response);
}
int nth_request_treply(nth_request_t *req,
int status, char const *phrase,
tag_type_t tag, tag_value_t value, ...)
{
msg_t *response, *next = NULL;
http_t *http;
int retval = -1;
int req_close, close;
ta_list ta;
http_header_t const *as_info = NULL;
if (req == NULL || status < 100 || status >= 600) {
return -1;
}
response = req->req_response;
http = http_object(response);
if (status >= 200 && req->req_as)
as_info = (http_header_t const *)req->req_as->as_info;
ta_start(ta, tag, value);
http_add_tl(response, http,
HTTPTAG_SERVER(req->req_server->srv_server),
HTTPTAG_HEADER(as_info),
ta_tags(ta));
if (http->http_payload && !http->http_content_length) {
http_content_length_t *l;
http_payload_t *pl;
size_t len = 0;
for (pl = http->http_payload; pl; pl = pl->pl_next)
len += pl->pl_len;
if (len > UINT32_MAX)
goto fail;
l = http_content_length_create(msg_home(response), (uint32_t)len);
msg_header_insert(response, (msg_pub_t *)http, (msg_header_t *)l);
}
if (req->req_method == http_method_head && http->http_payload) {
http_payload_t *pl;
for (pl = http->http_payload; pl; pl = pl->pl_next)
msg_header_remove(response, (msg_pub_t *)http, (msg_header_t *)pl);
}
http_complete_response(response, status, phrase,
http_object(req->req_request));
if (!http->http_date) {
http_date_t date[1];
http_date_init(date)->d_time = msg_now();
msg_header_add_dup(response, (msg_pub_t *)http, (msg_header_t*)date);
}
if (status < 200) {
close = 0;
next = server_msg_create(req->req_server, 0, NULL, 0, NULL, NULL);
}
else {
req_close = req->req_close;
close = (http->http_connection &&
msg_params_find(http->http_connection->k_items, "close"));
if (req_close && !close && status >= 200) {
close = 1;
http_add_tl(response, http, HTTPTAG_CONNECTION_STR("close"), TAG_END());
}
}
msg_serialize(response, (msg_pub_t *)http);
retval = tport_tqsend(req->req_tport, response, next,
TAG_IF(close, TPTAG_CLOSE_AFTER(1)),
ta_tags(ta));
fail:
ta_end(ta);
if (retval == 0)
req->req_status = status;
return retval;
}
static
int nua_notify_client_request(nua_client_request_t *cr,
msg_t *msg, sip_t *sip,
tagi_t const *tags)
{
nua_dialog_usage_t *du = cr->cr_usage;
struct notifier_usage *nu = nua_dialog_usage_private(du);
su_home_t *home = msg_home(msg);
sip_time_t now = sip_now();
sip_subscription_state_t *ss = sip->sip_subscription_state;
char const *expires;
if (du == NULL) /* Subscription has been terminated */
return nua_client_return(cr, SIP_481_NO_TRANSACTION, msg);
assert(du && nu);
if (du && nua_client_bind(cr, du) < 0)
return -1;
if (nu->nu_requested)
nu->nu_expires = nu->nu_requested;
nu->nu_requested = 0;
if (nu->nu_expires <= now || du->du_shutdown) {
nu->nu_substate = nua_substate_terminated;
expires = "expires=0";
}
else {
expires = su_sprintf(home, "expires=%lu", nu->nu_expires - now);
}
if (ss == NULL || nua_substate_make(ss->ss_substate) != nu->nu_substate) {
if (nu->nu_substate == nua_substate_terminated)
expires = nu->nu_expires > now ? "reason=noresource" : "reason=timeout";
ss = sip_subscription_state_format(home, "%s;%s",
nua_substate_name(nu->nu_substate),
expires);
msg_header_insert(msg, (void *)sip, (void *)ss);
}
else if (nu->nu_substate != nua_substate_terminated) {
msg_header_replace_param(home, ss->ss_common, expires);
}
#if SU_HAVE_EXPERIMENTAL
if (nu->nu_tag && !sip->sip_etag)
msg_header_add_make(msg, (void *)sip, sip_etag_class, nu->nu_tag);
if (nu->nu_no_body) {
nu->nu_no_body = 0;
msg_header_remove(msg, (void *)sip, (void *)sip->sip_payload);
msg_header_remove(msg, (void *)sip, (void *)sip->sip_content_length);
}
#endif
if (nu->nu_substate == nua_substate_terminated)
nua_client_set_terminating(cr, 1);
if (cr->cr_terminating) {
nua_server_request_t *sr;
for (sr = du->du_dialog->ds_sr; sr; sr = sr->sr_next) {
if (sr->sr_usage == du) {
/* If subscribe has not been responded, don't terminate usage by NOTIFY */
sr->sr_terminating = 1;
nua_client_set_terminating(cr, 0);
break;
}
}
}
if (du->du_event && !sip->sip_event)
sip_add_dup(cr->cr_msg, sip, (sip_header_t *)du->du_event);
return nua_base_client_request(cr, msg, sip, tags);
}
/**Forward a request belonging to the leg
* (stdarg version of nta_outgoing_forward()).
*
* @deprecated
* Use nta_outgoing_mcreate() instead.
*/
nta_outgoing_t *nta_outgoing_vforward(nta_leg_t *leg,
nta_response_f *callback,
nta_outgoing_magic_t *magic,
url_string_t const *route_url,
url_string_t const *request_uri,
nta_incoming_t const *ireq,
sip_t const *isip,
void const *extra,
va_list headers)
{
nta_agent_t *agent = leg->leg_agent;
nta_outgoing_t *orq = NULL;
msg_t *msg, *imsg;
sip_t *sip;
su_home_t *home;
assert(leg); assert(ireq);
if (isip == NULL)
imsg = ireq->irq_request, isip = sip_object(ireq->irq_request);
else if (isip == sip_object(ireq->irq_request))
imsg = ireq->irq_request;
else if (isip == sip_object(ireq->irq_request2))
imsg = ireq->irq_request2;
else {
SU_DEBUG_3(("nta_outgoing_forward: invalid arguments\n"));
return NULL;
}
assert(isip); assert(isip->sip_request);
if (!route_url)
route_url = (url_string_t *)agent->sa_default_proxy;
if (!(msg = nta_msg_create(agent, 0)))
return NULL;
msg_clone(msg, imsg);
sip = sip_object(msg);
home = msg_home(msg);
/* Copy the SIP headers from the @c imsg message */
do {
if (sip_copy_all(msg, sip, isip) < 0)
break;
if (sip_add_headers(msg, sip, extra, headers) < 0)
break;
if (!route_url && sip->sip_route) {
request_uri = (url_string_t *)sip->sip_route->r_url;
if (!sip_route_remove(msg, sip))
break;
}
if (request_uri) {
sip_request_t *rq;
rq = sip_request_create(home,
sip->sip_request->rq_method,
sip->sip_request->rq_method_name,
request_uri,
NULL);
if (!rq || sip_header_insert(msg, sip, (sip_header_t *)rq) < 0)
break;
}
if ((orq = nta_outgoing_mcreate(agent, callback, magic, route_url, msg)))
return orq;
} while (0);
msg_destroy(msg);
return NULL;
}
/** @internal Send an event to the application. */
int nua_stack_event(nua_t *nua, nua_handle_t *nh, msg_t *msg,
nua_event_t event, int status, char const *phrase,
tagi_t const *tags)
{
su_msg_r sumsg = SU_MSG_R_INIT;
size_t e_len, len, xtra, p_len;
if (event == nua_r_ack || event == nua_i_none)
return event;
if (nh == nua->nua_dhandle)
nh = NULL;
if (nua_log->log_level >= 5) {
char const *name = nua_event_name(event) + 4;
char const *p = phrase ? phrase : "";
if (status == 0)
SU_DEBUG_5(("nua(%p): event %s %s\n", (void *)nh, name, p));
else
SU_DEBUG_5(("nua(%p): event %s %u %s\n", (void *)nh, name, status, p));
}
if (event == nua_r_destroy) {
if (msg)
msg_destroy(msg);
if (status >= 200) {
nh_destroy(nua, nh);
}
return event;
}
if ((event > nua_r_authenticate && event <= nua_r_ack)
|| event < nua_i_error
|| (nh && !nh->nh_valid)
|| (nua->nua_shutdown && event != nua_r_shutdown &&
!nua->nua_prefs->ngp_shutdown_events)) {
if (msg)
msg_destroy(msg);
return event;
}
if (tags) {
e_len = offsetof(nua_ee_data_t, ee_data[0].e_tags);
len = tl_len(tags);
xtra = tl_xtra(tags, len);
}
else {
e_len = sizeof(nua_ee_data_t), len = 0, xtra = 0;
}
p_len = phrase ? strlen(phrase) + 1 : 1;
if (su_msg_new(sumsg, e_len + len + xtra + p_len) == 0) {
nua_ee_data_t *ee = su_msg_data(sumsg);
nua_event_data_t *e = ee->ee_data;
void *p;
if (tags) {
tagi_t *t = e->e_tags, *t_end = (tagi_t *)((char *)t + len);
void *b = t_end, *end = (char *)b + xtra;
t = tl_dup(t, tags, &b); p = b;
assert(t == t_end); assert(b == end); (void)end;
}
else
p = e + 1;
ee->ee_nua = nua_stack_ref(nua);
e->e_event = event;
e->e_nh = nh ? nua_handle_ref(nh) : NULL;
e->e_status = status;
e->e_phrase = strcpy(p, phrase ? phrase : "");
if (msg)
e->e_msg = msg, su_home_threadsafe(msg_home(msg));
su_msg_deinitializer(sumsg, nua_event_deinit);
su_msg_send_to(sumsg, nua->nua_client, nua_application_event);
}
return event;
}
/** @internal Create a message template for keepalive. */
static int create_keepalive_message(outbound_t *ob, sip_t const *regsip)
{
msg_t *msg = nta_msg_create(ob->ob_nta, MSG_FLG_COMPACT), *previous;
sip_t *osip = sip_object(msg);
sip_contact_t *m = ob->ob_rcontact;
unsigned d = ob->ob_keepalive.interval;
if (msg == NULL)
return -1;
assert(regsip); assert(regsip->sip_request);
if (m && m->m_params) {
sip_accept_contact_t *ac;
size_t i;
int features = 0;
ac = sip_accept_contact_make(msg_home(msg), "*;require;explicit");
for (i = 0; m->m_params[i]; i++) {
char const *s = m->m_params[i];
if (!sip_is_callerpref(s))
continue;
features++;
s = su_strdup(msg_home(msg), s);
msg_header_add_param(msg_home(msg), ac->cp_common, s);
}
if (features)
msg_header_insert(msg, NULL, (void *)ac);
else
msg_header_free(msg_home(msg), (void *)ac);
}
if (0 >
/* Duplicate essential headers from REGISTER request: */
sip_add_tl(msg, osip,
SIPTAG_TO(regsip->sip_to),
SIPTAG_FROM(regsip->sip_from),
/* XXX - we should only use loose routing here */
/* XXX - if we used strict routing,
the route header/request_uri must be restored
*/
SIPTAG_ROUTE(regsip->sip_route),
/* Add Max-Forwards 0 */
TAG_IF(d, SIPTAG_MAX_FORWARDS_STR("0")),
TAG_IF(d, SIPTAG_SUBJECT_STR("KEEPALIVE")),
SIPTAG_CALL_ID_STR(ob->ob_cookie),
SIPTAG_ACCEPT_STR(outbound_content_type),
TAG_END()) ||
/* Create request-line, Call-ID, CSeq */
nta_msg_request_complete(msg,
nta_default_leg(ob->ob_nta),
SIP_METHOD_OPTIONS,
(void *)regsip->sip_to->a_url) < 0 ||
msg_serialize(msg, (void *)osip) < 0 ||
msg_prepare(msg) < 0)
return msg_destroy(msg), -1;
previous = ob->ob_keepalive.msg;
ob->ob_keepalive.msg = msg;
msg_destroy(previous);
return 0;
}
/**Send a request message.
*
* @retval 0 if request is pending
* @retval >=1 if error event has been sent
* @retval < 0 if no error event has been sent
*/
static
int nua_client_request_sendmsg(nua_client_request_t *cr)
{
nua_handle_t *nh = cr->cr_owner;
nua_dialog_state_t *ds = nh->nh_ds;
sip_method_t method = cr->cr_method;
char const *name = cr->cr_method_name;
url_string_t const *url = (url_string_t *)cr->cr_target;
nta_leg_t *leg;
msg_t *msg;
sip_t *sip;
int error;
assert(cr->cr_orq == NULL);
cr->cr_offer_sent = cr->cr_answer_recv = 0;
cr->cr_offer_recv = cr->cr_answer_sent = 0;
if (!ds->ds_leg && cr->cr_dialog) {
ds->ds_leg = nta_leg_tcreate(nh->nh_nua->nua_nta,
nua_stack_process_request, nh,
SIPTAG_CALL_ID(cr->cr_sip->sip_call_id),
SIPTAG_FROM(cr->cr_sip->sip_from),
SIPTAG_TO(cr->cr_sip->sip_to),
SIPTAG_CSEQ(cr->cr_sip->sip_cseq),
TAG_END());
if (!ds->ds_leg)
return -1;
}
if (cr->cr_sip->sip_from && ds->ds_leg) {
if (cr->cr_sip->sip_from->a_tag == NULL) {
if (sip_from_tag(msg_home(cr->cr_msg), cr->cr_sip->sip_from,
nta_leg_tag(ds->ds_leg, NULL)) < 0) {
return -1;
}
}
}
cr->cr_retry_count++;
if (ds->ds_leg)
leg = ds->ds_leg;
else
leg = nh->nh_nua->nua_dhandle->nh_ds->ds_leg; /* Default leg */
msg = msg_copy(cr->cr_msg), sip = sip_object(msg);
if (msg == NULL)
return -1;
if (nua_dialog_is_established(ds)) {
while (sip->sip_route)
sip_route_remove(msg, sip);
}
else if (!ds->ds_route) {
sip_route_t *initial_route = NH_PGET(nh, initial_route);
if (initial_route) {
initial_route = sip_route_dup(msg_home(msg), initial_route);
if (!initial_route) return -1;
msg_header_prepend(msg, (msg_pub_t*)sip,
/* This should be
(msg_header_t **)&sip->sip_route
* but directly casting pointer &sip->sip_route gives
* spurious type-punning warning */
(msg_header_t **)((char *)sip + offsetof(sip_t, sip_route)),
(msg_header_t *)initial_route);
}
}
/**
* For in-dialog requests, the request URI is taken from the @Contact
* header received from the remote party during dialog establishment,
* and the NUTAG_URL() is ignored.
*
* Also, the @CallID and @CSeq headers and @From and @To tags are
* generated based on the dialog information and added to the request.
* If the dialog has a route, it is added to the request, too.
*/
if (nta_msg_request_complete(msg, leg, method, name, url) < 0) {
msg_destroy(msg);
return -1;
}
/**@MaxForwards header (with default value set by NTATAG_MAX_FORWARDS()) is
* also added now, if it does not exist.
*/
if (!ds->ds_remote)
ds->ds_remote = sip_to_dup(nh->nh_home, sip->sip_to);
if (!ds->ds_local)
ds->ds_local = sip_from_dup(nh->nh_home, sip->sip_from);
/**
* Next, values previously set with nua_set_params() or nua_set_hparams()
* are used: @Allow, @Supported, @Organization, @UserAgent and
* @AllowEvents headers are added to the request if they are not already
* set.
*/
if (!sip->sip_allow)
sip_add_dup(msg, sip, (sip_header_t*)NH_PGET(nh, allow));
if (!sip->sip_supported && NH_PGET(nh, supported))
sip_add_dup(msg, sip, (sip_header_t *)NH_PGET(nh, supported));
if (method == sip_method_register && NH_PGET(nh, path_enable) &&
!sip_has_feature(sip->sip_supported, "path") &&
!sip_has_feature(sip->sip_require, "path"))
sip_add_make(msg, sip, sip_supported_class, "path");
if (!sip->sip_organization && NH_PGET(nh, organization))
sip_add_make(msg, sip, sip_organization_class, NH_PGET(nh, organization));
if (!sip->sip_user_agent && NH_PGET(nh, user_agent))
sip_add_make(msg, sip, sip_user_agent_class, NH_PGET(nh, user_agent));
/** Any node implementing one or more event packages SHOULD include an
* appropriate @AllowEvents header indicating all supported events in
* all methods which initiate dialogs and their responses (such as
* INVITE) and OPTIONS responses.
*/
if (!sip->sip_allow_events &&
NH_PGET(nh, allow_events) &&
(method == sip_method_notify || /* Always in NOTIFY */
(!ds->ds_remote_tag && /* And in initial requests */
(method == sip_method_subscribe || method == sip_method_refer ||
method == sip_method_options ||
method == sip_method_invite))))
sip_add_dup(msg, sip, (void *)NH_PGET(nh, allow_events));
/**
* Next, the stack generates a @Contact header for the request (unless
* the application already gave a @Contact header or it does not want to
* use @Contact and indicates that by including SIPTAG_CONTACT(NULL) or
* SIPTAG_CONTACT(SIP_NONE) in the tagged parameters.) If the
* application has registered the URI in @From header, the @Contact
* header used with registration is used. Otherwise, the @Contact header
* is generated from the local IP address and port number.
*/
/**For the initial requests, @ServiceRoute set that was received from the
* registrar is also added to the request message.
*/
if (cr->cr_method != sip_method_register) {
if (cr->cr_contactize && cr->cr_has_contact) {
sip_contact_t *ltarget = sip_contact_dup(nh->nh_home, sip->sip_contact);
if (ds->ds_ltarget)
msg_header_free(nh->nh_home, (msg_header_t *)ds->ds_ltarget);
ds->ds_ltarget = ltarget;
}
if (ds->ds_ltarget && !cr->cr_has_contact)
sip_add_dup(msg, sip, (sip_header_t *)ds->ds_ltarget);
if (nua_registration_add_contact_to_request(nh, msg, sip,
cr->cr_contactize &&
!cr->cr_has_contact &&
!ds->ds_ltarget,
!ds->ds_route) < 0) {
msg_destroy(msg);
return -1;
}
}
cr->cr_wait_for_cred = 0;
if (cr->cr_methods->crm_send)
error = cr->cr_methods->crm_send(cr, msg, sip, NULL);
else
error = nua_base_client_request(cr, msg, sip, NULL);
if (error == -1)
msg_destroy(msg);
return error;
}
/**Add message separator, then test if message is complete.
*
* Add sip_content_length and sip_separator if they are missing.
* The test that all necessary message components ( @From, @To,
* @CSeq, @CallID, @ContentLength and message separator are present.
*
* @retval 0 when successful
* @retval -1 upon an error: headers are missing and they could not be added
*/
int sip_complete_message(msg_t *msg)
{
sip_t *sip = sip_object(msg);
su_home_t *home = msg_home(msg);
size_t len = 0;
ssize_t mplen;
if (sip == NULL)
return -1;
if (!sip->sip_separator)
sip->sip_separator = sip_separator_create(msg_home(msg));
if (sip->sip_multipart) {
sip_content_type_t *c = sip->sip_content_type;
msg_multipart_t *mp = sip->sip_multipart;
sip_common_t *head;
if (!c || msg_multipart_complete(msg_home(msg), c, mp) < 0)
return -1;
if (sip->sip_payload)
head = sip->sip_payload->pl_common;
else
head = sip->sip_separator->sep_common;
if (!head || !msg_multipart_serialize(&head->h_succ, mp))
return -1;
mplen = msg_multipart_prepare(msg, mp, sip->sip_flags);
if (mplen == -1)
return -1;
len = (size_t)mplen;
}
if (sip->sip_payload)
len += sip->sip_payload->pl_len;
if (len > UINT32_MAX)
return -1;
if (!sip->sip_content_length) {
msg_header_insert(msg, (msg_pub_t *)sip, (msg_header_t*)
sip_content_length_create(home, (uint32_t)len));
}
else {
if (sip->sip_content_length->l_length != len) {
sip->sip_content_length->l_length = (uint32_t)len;
sip_fragment_clear(sip->sip_content_length->l_common);
}
}
if (!sip->sip_cseq ||
!sip->sip_call_id ||
!sip->sip_to ||
!sip->sip_from ||
!sip->sip_separator ||
!sip->sip_content_length)
return -1;
return 0;
}
static tport_t *tport_http_connect(tport_primary_t *pri, su_addrinfo_t *ai,
tp_name_t const *tpn)
{
tport_http_connect_t *thc = (tport_http_connect_t *)pri;
tport_http_connect_instance_t *thci;
tport_master_t *mr = pri->pri_master;
msg_t *msg, *response;
char hostport[TPORT_HOSTPORTSIZE];
tport_t *tport;
http_request_t *rq;
msg = msg_create(http_default_mclass(), 0);
if (!msg)
return NULL;
tport_hostport(hostport, sizeof hostport, (void *)ai->ai_addr, 1);
rq = http_request_format(msg_home(msg), "CONNECT %s HTTP/1.1", hostport);
if (msg_header_insert(msg, NULL, (void *)rq) < 0
|| msg_header_add_str(msg, NULL,
"User-Agent: Sofia-SIP/" VERSION "\n") < 0
|| msg_header_add_str(msg, NULL, "Proxy-Connection: keepalive\n") < 0
|| msg_header_add_make(msg, NULL, http_host_class, hostport) < 0
|| msg_header_add_make(msg, NULL, http_separator_class, "\r\n") < 0
|| msg_serialize(msg, NULL) < 0
|| msg_prepare(msg) < 0)
return (void)msg_destroy(msg), NULL;
/*
* Create a response message that ignores the body
* if there is no Content-Length
*/
response = msg_create(http_default_mclass(), mr->mr_log | MSG_FLG_MAILBOX);
tport = tport_base_connect(pri, thc->thc_proxy, ai, tpn);
if (!tport) {
msg_destroy(msg); msg_destroy(response);
return tport;
}
thci = (tport_http_connect_instance_t*)tport;
thci->thci_response = response;
tport->tp_msg = response;
msg_set_next(response, thci->thci_stackmsg = tport_msg_alloc(tport, 512));
if (tport_send_msg(tport, msg, tpn, NULL) < 0) {
SU_DEBUG_9(("tport_send_msg failed in tpot_http_connect\n" VA_NONE));
msg_destroy(msg);
tport_zap_secondary(tport);
return NULL;
}
tport_set_secondary_timer(tport);
return tport;
}
