diff options
Diffstat (limited to 'pjsip/src/pjsip_simple/presence.c')
| -rw-r--r-- | pjsip/src/pjsip_simple/presence.c | 382 |
1 files changed, 382 insertions, 0 deletions
diff --git a/pjsip/src/pjsip_simple/presence.c b/pjsip/src/pjsip_simple/presence.c new file mode 100644 index 00000000..31ab5cdc --- /dev/null +++ b/pjsip/src/pjsip_simple/presence.c @@ -0,0 +1,382 @@ +/* $Header: /pjproject/pjsip/src/pjsip_simple/presence.c 7 8/24/05 10:33a Bennylp $ */
+#include <pjsip_simple/presence.h>
+#include <pjsip/sip_transport.h>
+#include <pj/pool.h>
+#include <pj/string.h>
+#include <pj/guid.h>
+#include <pj/os.h>
+#include <stdio.h>
+
+/* Forward declarations. */
+static void on_query_subscribe(pjsip_rx_data *rdata, int *status);
+static void on_subscribe(pjsip_event_sub *sub, pjsip_rx_data *rdata,
+ pjsip_event_sub_cb **cb, int *expires);
+static void on_sub_terminated(pjsip_event_sub *sub, const pj_str_t *reason);
+static void on_sub_received_refresh(pjsip_event_sub *sub, pjsip_rx_data *rdata);
+static void on_received_notify(pjsip_event_sub *sub, pjsip_rx_data *rdata);
+
+/* Some string constants. */
+static pj_str_t PRESENCE_EVENT = { "presence", 8 };
+
+/* Accept types. */
+static pj_str_t accept_names[] = {
+ { "application/pidf+xml", 20 },
+ { "application/xpidf+xml", 21 }
+};
+static pjsip_media_type accept_types[] = {
+ {
+ { "application", 11 },
+ { "pidf+xml", 8 }
+ },
+ {
+ { "application", 11 },
+ { "xpidf+xml", 9 }
+ }
+};
+
+/* Callback that is registered by application. */
+static pjsip_presence_cb cb;
+
+/* Package callback to be register to event_notify */
+static pjsip_event_sub_pkg_cb pkg_cb = { &on_query_subscribe,
+ &on_subscribe };
+
+/* Global/static callback to be registered to event_notify */
+static pjsip_event_sub_cb sub_cb = { &on_sub_terminated,
+ &on_sub_received_refresh,
+ NULL,
+ &on_received_notify,
+ NULL };
+
+/*
+ * Initialize presence module.
+ * This will register event package "presence" to event framework.
+ */
+PJ_DEF(void) pjsip_presence_init(const pjsip_presence_cb *pcb)
+{
+ pj_memcpy(&cb, pcb, sizeof(*pcb));
+ pjsip_event_sub_register_pkg( &PRESENCE_EVENT,
+ sizeof(accept_names)/sizeof(accept_names[0]),
+ accept_names,
+ &pkg_cb);
+}
+
+/*
+ * Create presence subscription.
+ */
+PJ_DEF(pjsip_presentity*) pjsip_presence_create( pjsip_endpoint *endpt,
+ const pj_str_t *local_url,
+ const pj_str_t *remote_url,
+ int expires,
+ void *user_data )
+{
+ pjsip_event_sub *sub;
+ pjsip_presentity *pres;
+
+ if (expires < 0)
+ expires = 300;
+
+ /* Create event subscription */
+ sub = pjsip_event_sub_create(endpt, local_url, remote_url, &PRESENCE_EVENT,
+ expires,
+ sizeof(accept_names)/sizeof(accept_names[0]),
+ accept_names,
+ NULL, &sub_cb);
+ if (!sub)
+ return NULL;
+
+ /* Allocate presence descriptor. */
+ pres = pj_pool_calloc(sub->pool, 1, sizeof(*pres));
+ pres->sub = sub;
+ pres->user_data = user_data;
+ sub->user_data = pres;
+
+ return pres;
+}
+
+/*
+ * Send SUBSCRIBE.
+ */
+PJ_DEF(pj_status_t) pjsip_presence_subscribe( pjsip_presentity *pres )
+{
+ return pjsip_event_sub_subscribe( pres->sub );
+}
+
+/*
+ * Set credentials to be used for outgoing requests.
+ */
+PJ_DEF(pj_status_t) pjsip_presence_set_credentials( pjsip_presentity *pres,
+ int count,
+ const pjsip_cred_info cred[])
+{
+ return pjsip_event_sub_set_credentials(pres->sub, count, cred);
+}
+
+/*
+ * Set route-set.
+ */
+PJ_DEF(pj_status_t) pjsip_presence_set_route_set( pjsip_presentity *pres,
+ const pjsip_route_hdr *hdr )
+{
+ return pjsip_event_sub_set_route_set( pres->sub, hdr );
+}
+
+/*
+ * Unsubscribe.
+ */
+PJ_DEF(pj_status_t) pjsip_presence_unsubscribe( pjsip_presentity *pres )
+{
+ return pjsip_event_sub_unsubscribe(pres->sub);
+}
+
+/*
+ * This is the pjsip_msg_body callback to print XML body.
+ */
+static int print_xml(pjsip_msg_body *body, char *buf, pj_size_t size)
+{
+ return pj_xml_print( body->data, buf, size, PJ_TRUE );
+}
+
+/*
+ * Create and initialize PIDF document and msg body (notifier only).
+ */
+static pj_status_t init_presence_info( pjsip_presentity *pres )
+{
+ pj_str_t uri;
+ pj_pool_t *pool = pres->sub->pool;
+ char tmp[PJSIP_MAX_URL_SIZE];
+ pjpidf_tuple *tuple;
+ const pjsip_media_type *content_type = NULL;
+
+ pj_assert(pres->uas_body == NULL);
+
+ /* Make entity_id */
+ uri.ptr = tmp;
+ uri.slen = pjsip_uri_print(PJSIP_URI_IN_REQ_URI, pres->sub->from->uri,
+ tmp, sizeof(tmp));
+ if (uri.slen < 0)
+ return -1;
+
+ if (pres->pres_type == PJSIP_PRES_TYPE_PIDF) {
+ pj_str_t s;
+
+ /* Create <presence>. */
+ pres->uas_data.pidf = pjpidf_create(pool, &s);
+
+ /* Create <tuple> */
+ pj_create_unique_string(pool, &s);
+ tuple = pjpidf_pres_add_tuple(pool, pres->uas_data.pidf, &s);
+
+ /* Set <contact> */
+ s.ptr = tmp;
+ s.slen = pjsip_uri_print(PJSIP_URI_IN_REQ_URI, pres->sub->contact->uri, tmp, sizeof(tmp));
+ if (s.slen < 0)
+ return -1;
+ pjpidf_tuple_set_contact(pool, tuple, &s);
+
+ /* Content-Type */
+ content_type = &accept_types[PJSIP_PRES_TYPE_PIDF];
+
+ } else if (pres->pres_type == PJSIP_PRES_TYPE_XPIDF) {
+
+ /* Create XPIDF */
+ pres->uas_data.xpidf = pjxpidf_create(pool, &uri);
+
+ /* Content-Type. */
+ content_type = &accept_types[PJSIP_PRES_TYPE_XPIDF];
+ }
+
+ /* Create message body */
+ pres->uas_body = pj_pool_alloc(pool, sizeof(pjsip_msg_body));
+ pres->uas_body->content_type = *content_type;
+ pres->uas_body->data = pres->uas_data.pidf;
+ pres->uas_body->len = 0;
+ pres->uas_body->print_body = &print_xml;
+
+ return 0;
+}
+
+/*
+ * Send NOTIFY and set subscription state.
+ */
+PJ_DEF(pj_status_t) pjsip_presence_notify( pjsip_presentity *pres,
+ pjsip_event_sub_state state,
+ pj_bool_t is_online )
+{
+ pj_str_t reason = { "", 0 };
+
+ if (pres->uas_data.pidf == NULL) {
+ if (init_presence_info(pres) != 0)
+ return -1;
+ }
+
+ /* Update basic status in PIDF/XPIDF document. */
+ if (pres->pres_type == PJSIP_PRES_TYPE_PIDF) {
+ pjpidf_tuple *first;
+ pjpidf_status *status;
+ pj_time_val now;
+ pj_parsed_time pnow;
+
+ first = pjpidf_op.pres.get_first_tuple(pres->uas_data.pidf);
+ pj_assert(first);
+ status = pjpidf_op.tuple.get_status(first);
+ pj_assert(status);
+ pjpidf_op.status.set_basic_open(status, is_online);
+
+ /* Update timestamp. */
+ if (pres->timestamp.ptr == 0) {
+ pres->timestamp.ptr = pj_pool_alloc(pres->sub->pool, 24);
+ }
+ pj_gettimeofday(&now);
+ pj_time_decode(&now, &pnow);
+ pres->timestamp.slen = sprintf(pres->timestamp.ptr,
+ "%04d-%02d-%02dT%02d:%02d:%02dZ",
+ pnow.year, pnow.mon, pnow.day,
+ pnow.hour, pnow.min, pnow.sec);
+ pjpidf_op.tuple.set_timestamp_np(pres->sub->pool, first, &pres->timestamp);
+
+ } else if (pres->pres_type == PJSIP_PRES_TYPE_XPIDF) {
+ pjxpidf_set_status( pres->uas_data.xpidf, is_online );
+
+ } else {
+ pj_assert(0);
+ }
+
+ /* Send notify. */
+ return pjsip_event_sub_notify( pres->sub, state, &reason, pres->uas_body);
+}
+
+/*
+ * Destroy subscription (can be called for both subscriber and notifier).
+ */
+PJ_DEF(pj_status_t) pjsip_presence_destroy( pjsip_presentity *pres )
+{
+ return pjsip_event_sub_destroy(pres->sub);
+}
+
+/*
+ * This callback is called by event framework to query whether we want to
+ * accept an incoming subscription.
+ */
+static void on_query_subscribe(pjsip_rx_data *rdata, int *status)
+{
+ if (cb.accept_presence) {
+ (*cb.accept_presence)(rdata, status);
+ }
+}
+
+/*
+ * This callback is called by event framework after we accept the incoming
+ * subscription, to notify about the new subscription instance.
+ */
+static void on_subscribe(pjsip_event_sub *sub, pjsip_rx_data *rdata,
+ pjsip_event_sub_cb **set_sub_cb, int *expires)
+{
+ pjsip_presentity *pres;
+ pjsip_accept_hdr *accept;
+
+ pres = pj_pool_calloc(sub->pool, 1, sizeof(*pres));
+ pres->sub = sub;
+ pres->pres_type = PJSIP_PRES_TYPE_PIDF;
+ sub->user_data = pres;
+ *set_sub_cb = &sub_cb;
+
+ accept = pjsip_msg_find_hdr(rdata->msg, PJSIP_H_ACCEPT, NULL);
+ if (accept) {
+ unsigned i;
+ int found = 0;
+ for (i=0; i<accept->count && !found; ++i) {
+ int j;
+ for (j=0; j<sizeof(accept_names)/sizeof(accept_names[0]); ++j) {
+ if (!pj_stricmp(&accept->values[i], &accept_names[j])) {
+ pres->pres_type = j;
+ found = 1;
+ break;
+ }
+ }
+ }
+ pj_assert(found );
+ }
+
+ (*cb.on_received_request)(pres, rdata, expires);
+}
+
+/*
+ * This callback is called by event framework when the subscription is
+ * terminated.
+ */
+static void on_sub_terminated(pjsip_event_sub *sub, const pj_str_t *reason)
+{
+ pjsip_presentity *pres = sub->user_data;
+ if (cb.on_terminated)
+ (*cb.on_terminated)(pres, reason);
+}
+
+/*
+ * This callback is called by event framework when it receives incoming
+ * SUBSCRIBE request to refresh the subscription.
+ */
+static void on_sub_received_refresh(pjsip_event_sub *sub, pjsip_rx_data *rdata)
+{
+ pjsip_presentity *pres = sub->user_data;
+ if (cb.on_received_refresh)
+ (*cb.on_received_refresh)(pres, rdata);
+}
+
+/*
+ * This callback is called by event framework when it receives incoming
+ * NOTIFY request.
+ */
+static void on_received_notify(pjsip_event_sub *sub, pjsip_rx_data *rdata)
+{
+ pjsip_presentity *pres = sub->user_data;
+
+ if (cb.on_received_update) {
+ pj_status_t is_open;
+ pjsip_msg_body *body;
+ int i;
+
+ body = rdata->msg->body;
+ if (!body)
+ return;
+
+ for (i=0; i<sizeof(accept_types)/sizeof(accept_types[0]); ++i) {
+ if (!pj_stricmp(&body->content_type.type, &accept_types[i].type) &&
+ !pj_stricmp(&body->content_type.subtype, &accept_types[i].subtype))
+ {
+ break;
+ }
+ }
+
+ if (i==PJSIP_PRES_TYPE_PIDF) {
+ pjpidf_pres *pres;
+ pjpidf_tuple *tuple;
+ pjpidf_status *status;
+
+ pres = pjpidf_parse(rdata->pool, body->data, body->len);
+ if (!pres)
+ return;
+ tuple = pjpidf_pres_get_first_tuple(pres);
+ if (!tuple)
+ return;
+ status = pjpidf_tuple_get_status(tuple);
+ if (!status)
+ return;
+ is_open = pjpidf_status_is_basic_open(status);
+
+ } else if (i==PJSIP_PRES_TYPE_XPIDF) {
+ pjxpidf_pres *pres;
+
+ pres = pjxpidf_parse(rdata->pool, body->data, body->len);
+ if (!pres)
+ return;
+ is_open = pjxpidf_get_status(pres);
+
+ } else {
+ return;
+ }
+
+ (*cb.on_received_update)(pres, is_open);
+ }
+}
+
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