Benny Prijono | dd859a6 | 2005-11-01 16:42:51 +0000 | [diff] [blame^] | 1 | /* $Header: /pjproject/pjsip/src/pjsip_simple/presence.c 7 8/24/05 10:33a Bennylp $ */ |
| 2 | #include <pjsip_simple/presence.h> |
| 3 | #include <pjsip/sip_transport.h> |
| 4 | #include <pj/pool.h> |
| 5 | #include <pj/string.h> |
| 6 | #include <pj/guid.h> |
| 7 | #include <pj/os.h> |
| 8 | #include <stdio.h> |
| 9 | |
| 10 | /* Forward declarations. */ |
| 11 | static void on_query_subscribe(pjsip_rx_data *rdata, int *status); |
| 12 | static void on_subscribe(pjsip_event_sub *sub, pjsip_rx_data *rdata, |
| 13 | pjsip_event_sub_cb **cb, int *expires); |
| 14 | static void on_sub_terminated(pjsip_event_sub *sub, const pj_str_t *reason); |
| 15 | static void on_sub_received_refresh(pjsip_event_sub *sub, pjsip_rx_data *rdata); |
| 16 | static void on_received_notify(pjsip_event_sub *sub, pjsip_rx_data *rdata); |
| 17 | |
| 18 | /* Some string constants. */ |
| 19 | static pj_str_t PRESENCE_EVENT = { "presence", 8 }; |
| 20 | |
| 21 | /* Accept types. */ |
| 22 | static pj_str_t accept_names[] = { |
| 23 | { "application/pidf+xml", 20 }, |
| 24 | { "application/xpidf+xml", 21 } |
| 25 | }; |
| 26 | static pjsip_media_type accept_types[] = { |
| 27 | { |
| 28 | { "application", 11 }, |
| 29 | { "pidf+xml", 8 } |
| 30 | }, |
| 31 | { |
| 32 | { "application", 11 }, |
| 33 | { "xpidf+xml", 9 } |
| 34 | } |
| 35 | }; |
| 36 | |
| 37 | /* Callback that is registered by application. */ |
| 38 | static pjsip_presence_cb cb; |
| 39 | |
| 40 | /* Package callback to be register to event_notify */ |
| 41 | static pjsip_event_sub_pkg_cb pkg_cb = { &on_query_subscribe, |
| 42 | &on_subscribe }; |
| 43 | |
| 44 | /* Global/static callback to be registered to event_notify */ |
| 45 | static pjsip_event_sub_cb sub_cb = { &on_sub_terminated, |
| 46 | &on_sub_received_refresh, |
| 47 | NULL, |
| 48 | &on_received_notify, |
| 49 | NULL }; |
| 50 | |
| 51 | /* |
| 52 | * Initialize presence module. |
| 53 | * This will register event package "presence" to event framework. |
| 54 | */ |
| 55 | PJ_DEF(void) pjsip_presence_init(const pjsip_presence_cb *pcb) |
| 56 | { |
| 57 | pj_memcpy(&cb, pcb, sizeof(*pcb)); |
| 58 | pjsip_event_sub_register_pkg( &PRESENCE_EVENT, |
| 59 | sizeof(accept_names)/sizeof(accept_names[0]), |
| 60 | accept_names, |
| 61 | &pkg_cb); |
| 62 | } |
| 63 | |
| 64 | /* |
| 65 | * Create presence subscription. |
| 66 | */ |
| 67 | PJ_DEF(pjsip_presentity*) pjsip_presence_create( pjsip_endpoint *endpt, |
| 68 | const pj_str_t *local_url, |
| 69 | const pj_str_t *remote_url, |
| 70 | int expires, |
| 71 | void *user_data ) |
| 72 | { |
| 73 | pjsip_event_sub *sub; |
| 74 | pjsip_presentity *pres; |
| 75 | |
| 76 | if (expires < 0) |
| 77 | expires = 300; |
| 78 | |
| 79 | /* Create event subscription */ |
| 80 | sub = pjsip_event_sub_create(endpt, local_url, remote_url, &PRESENCE_EVENT, |
| 81 | expires, |
| 82 | sizeof(accept_names)/sizeof(accept_names[0]), |
| 83 | accept_names, |
| 84 | NULL, &sub_cb); |
| 85 | if (!sub) |
| 86 | return NULL; |
| 87 | |
| 88 | /* Allocate presence descriptor. */ |
| 89 | pres = pj_pool_calloc(sub->pool, 1, sizeof(*pres)); |
| 90 | pres->sub = sub; |
| 91 | pres->user_data = user_data; |
| 92 | sub->user_data = pres; |
| 93 | |
| 94 | return pres; |
| 95 | } |
| 96 | |
| 97 | /* |
| 98 | * Send SUBSCRIBE. |
| 99 | */ |
| 100 | PJ_DEF(pj_status_t) pjsip_presence_subscribe( pjsip_presentity *pres ) |
| 101 | { |
| 102 | return pjsip_event_sub_subscribe( pres->sub ); |
| 103 | } |
| 104 | |
| 105 | /* |
| 106 | * Set credentials to be used for outgoing requests. |
| 107 | */ |
| 108 | PJ_DEF(pj_status_t) pjsip_presence_set_credentials( pjsip_presentity *pres, |
| 109 | int count, |
| 110 | const pjsip_cred_info cred[]) |
| 111 | { |
| 112 | return pjsip_event_sub_set_credentials(pres->sub, count, cred); |
| 113 | } |
| 114 | |
| 115 | /* |
| 116 | * Set route-set. |
| 117 | */ |
| 118 | PJ_DEF(pj_status_t) pjsip_presence_set_route_set( pjsip_presentity *pres, |
| 119 | const pjsip_route_hdr *hdr ) |
| 120 | { |
| 121 | return pjsip_event_sub_set_route_set( pres->sub, hdr ); |
| 122 | } |
| 123 | |
| 124 | /* |
| 125 | * Unsubscribe. |
| 126 | */ |
| 127 | PJ_DEF(pj_status_t) pjsip_presence_unsubscribe( pjsip_presentity *pres ) |
| 128 | { |
| 129 | return pjsip_event_sub_unsubscribe(pres->sub); |
| 130 | } |
| 131 | |
| 132 | /* |
| 133 | * This is the pjsip_msg_body callback to print XML body. |
| 134 | */ |
| 135 | static int print_xml(pjsip_msg_body *body, char *buf, pj_size_t size) |
| 136 | { |
| 137 | return pj_xml_print( body->data, buf, size, PJ_TRUE ); |
| 138 | } |
| 139 | |
| 140 | /* |
| 141 | * Create and initialize PIDF document and msg body (notifier only). |
| 142 | */ |
| 143 | static pj_status_t init_presence_info( pjsip_presentity *pres ) |
| 144 | { |
| 145 | pj_str_t uri; |
| 146 | pj_pool_t *pool = pres->sub->pool; |
| 147 | char tmp[PJSIP_MAX_URL_SIZE]; |
| 148 | pjpidf_tuple *tuple; |
| 149 | const pjsip_media_type *content_type = NULL; |
| 150 | |
| 151 | pj_assert(pres->uas_body == NULL); |
| 152 | |
| 153 | /* Make entity_id */ |
| 154 | uri.ptr = tmp; |
| 155 | uri.slen = pjsip_uri_print(PJSIP_URI_IN_REQ_URI, pres->sub->from->uri, |
| 156 | tmp, sizeof(tmp)); |
| 157 | if (uri.slen < 0) |
| 158 | return -1; |
| 159 | |
| 160 | if (pres->pres_type == PJSIP_PRES_TYPE_PIDF) { |
| 161 | pj_str_t s; |
| 162 | |
| 163 | /* Create <presence>. */ |
| 164 | pres->uas_data.pidf = pjpidf_create(pool, &s); |
| 165 | |
| 166 | /* Create <tuple> */ |
| 167 | pj_create_unique_string(pool, &s); |
| 168 | tuple = pjpidf_pres_add_tuple(pool, pres->uas_data.pidf, &s); |
| 169 | |
| 170 | /* Set <contact> */ |
| 171 | s.ptr = tmp; |
| 172 | s.slen = pjsip_uri_print(PJSIP_URI_IN_REQ_URI, pres->sub->contact->uri, tmp, sizeof(tmp)); |
| 173 | if (s.slen < 0) |
| 174 | return -1; |
| 175 | pjpidf_tuple_set_contact(pool, tuple, &s); |
| 176 | |
| 177 | /* Content-Type */ |
| 178 | content_type = &accept_types[PJSIP_PRES_TYPE_PIDF]; |
| 179 | |
| 180 | } else if (pres->pres_type == PJSIP_PRES_TYPE_XPIDF) { |
| 181 | |
| 182 | /* Create XPIDF */ |
| 183 | pres->uas_data.xpidf = pjxpidf_create(pool, &uri); |
| 184 | |
| 185 | /* Content-Type. */ |
| 186 | content_type = &accept_types[PJSIP_PRES_TYPE_XPIDF]; |
| 187 | } |
| 188 | |
| 189 | /* Create message body */ |
| 190 | pres->uas_body = pj_pool_alloc(pool, sizeof(pjsip_msg_body)); |
| 191 | pres->uas_body->content_type = *content_type; |
| 192 | pres->uas_body->data = pres->uas_data.pidf; |
| 193 | pres->uas_body->len = 0; |
| 194 | pres->uas_body->print_body = &print_xml; |
| 195 | |
| 196 | return 0; |
| 197 | } |
| 198 | |
| 199 | /* |
| 200 | * Send NOTIFY and set subscription state. |
| 201 | */ |
| 202 | PJ_DEF(pj_status_t) pjsip_presence_notify( pjsip_presentity *pres, |
| 203 | pjsip_event_sub_state state, |
| 204 | pj_bool_t is_online ) |
| 205 | { |
| 206 | pj_str_t reason = { "", 0 }; |
| 207 | |
| 208 | if (pres->uas_data.pidf == NULL) { |
| 209 | if (init_presence_info(pres) != 0) |
| 210 | return -1; |
| 211 | } |
| 212 | |
| 213 | /* Update basic status in PIDF/XPIDF document. */ |
| 214 | if (pres->pres_type == PJSIP_PRES_TYPE_PIDF) { |
| 215 | pjpidf_tuple *first; |
| 216 | pjpidf_status *status; |
| 217 | pj_time_val now; |
| 218 | pj_parsed_time pnow; |
| 219 | |
| 220 | first = pjpidf_op.pres.get_first_tuple(pres->uas_data.pidf); |
| 221 | pj_assert(first); |
| 222 | status = pjpidf_op.tuple.get_status(first); |
| 223 | pj_assert(status); |
| 224 | pjpidf_op.status.set_basic_open(status, is_online); |
| 225 | |
| 226 | /* Update timestamp. */ |
| 227 | if (pres->timestamp.ptr == 0) { |
| 228 | pres->timestamp.ptr = pj_pool_alloc(pres->sub->pool, 24); |
| 229 | } |
| 230 | pj_gettimeofday(&now); |
| 231 | pj_time_decode(&now, &pnow); |
| 232 | pres->timestamp.slen = sprintf(pres->timestamp.ptr, |
| 233 | "%04d-%02d-%02dT%02d:%02d:%02dZ", |
| 234 | pnow.year, pnow.mon, pnow.day, |
| 235 | pnow.hour, pnow.min, pnow.sec); |
| 236 | pjpidf_op.tuple.set_timestamp_np(pres->sub->pool, first, &pres->timestamp); |
| 237 | |
| 238 | } else if (pres->pres_type == PJSIP_PRES_TYPE_XPIDF) { |
| 239 | pjxpidf_set_status( pres->uas_data.xpidf, is_online ); |
| 240 | |
| 241 | } else { |
| 242 | pj_assert(0); |
| 243 | } |
| 244 | |
| 245 | /* Send notify. */ |
| 246 | return pjsip_event_sub_notify( pres->sub, state, &reason, pres->uas_body); |
| 247 | } |
| 248 | |
| 249 | /* |
| 250 | * Destroy subscription (can be called for both subscriber and notifier). |
| 251 | */ |
| 252 | PJ_DEF(pj_status_t) pjsip_presence_destroy( pjsip_presentity *pres ) |
| 253 | { |
| 254 | return pjsip_event_sub_destroy(pres->sub); |
| 255 | } |
| 256 | |
| 257 | /* |
| 258 | * This callback is called by event framework to query whether we want to |
| 259 | * accept an incoming subscription. |
| 260 | */ |
| 261 | static void on_query_subscribe(pjsip_rx_data *rdata, int *status) |
| 262 | { |
| 263 | if (cb.accept_presence) { |
| 264 | (*cb.accept_presence)(rdata, status); |
| 265 | } |
| 266 | } |
| 267 | |
| 268 | /* |
| 269 | * This callback is called by event framework after we accept the incoming |
| 270 | * subscription, to notify about the new subscription instance. |
| 271 | */ |
| 272 | static void on_subscribe(pjsip_event_sub *sub, pjsip_rx_data *rdata, |
| 273 | pjsip_event_sub_cb **set_sub_cb, int *expires) |
| 274 | { |
| 275 | pjsip_presentity *pres; |
| 276 | pjsip_accept_hdr *accept; |
| 277 | |
| 278 | pres = pj_pool_calloc(sub->pool, 1, sizeof(*pres)); |
| 279 | pres->sub = sub; |
| 280 | pres->pres_type = PJSIP_PRES_TYPE_PIDF; |
| 281 | sub->user_data = pres; |
| 282 | *set_sub_cb = &sub_cb; |
| 283 | |
| 284 | accept = pjsip_msg_find_hdr(rdata->msg, PJSIP_H_ACCEPT, NULL); |
| 285 | if (accept) { |
| 286 | unsigned i; |
| 287 | int found = 0; |
| 288 | for (i=0; i<accept->count && !found; ++i) { |
| 289 | int j; |
| 290 | for (j=0; j<sizeof(accept_names)/sizeof(accept_names[0]); ++j) { |
| 291 | if (!pj_stricmp(&accept->values[i], &accept_names[j])) { |
| 292 | pres->pres_type = j; |
| 293 | found = 1; |
| 294 | break; |
| 295 | } |
| 296 | } |
| 297 | } |
| 298 | pj_assert(found ); |
| 299 | } |
| 300 | |
| 301 | (*cb.on_received_request)(pres, rdata, expires); |
| 302 | } |
| 303 | |
| 304 | /* |
| 305 | * This callback is called by event framework when the subscription is |
| 306 | * terminated. |
| 307 | */ |
| 308 | static void on_sub_terminated(pjsip_event_sub *sub, const pj_str_t *reason) |
| 309 | { |
| 310 | pjsip_presentity *pres = sub->user_data; |
| 311 | if (cb.on_terminated) |
| 312 | (*cb.on_terminated)(pres, reason); |
| 313 | } |
| 314 | |
| 315 | /* |
| 316 | * This callback is called by event framework when it receives incoming |
| 317 | * SUBSCRIBE request to refresh the subscription. |
| 318 | */ |
| 319 | static void on_sub_received_refresh(pjsip_event_sub *sub, pjsip_rx_data *rdata) |
| 320 | { |
| 321 | pjsip_presentity *pres = sub->user_data; |
| 322 | if (cb.on_received_refresh) |
| 323 | (*cb.on_received_refresh)(pres, rdata); |
| 324 | } |
| 325 | |
| 326 | /* |
| 327 | * This callback is called by event framework when it receives incoming |
| 328 | * NOTIFY request. |
| 329 | */ |
| 330 | static void on_received_notify(pjsip_event_sub *sub, pjsip_rx_data *rdata) |
| 331 | { |
| 332 | pjsip_presentity *pres = sub->user_data; |
| 333 | |
| 334 | if (cb.on_received_update) { |
| 335 | pj_status_t is_open; |
| 336 | pjsip_msg_body *body; |
| 337 | int i; |
| 338 | |
| 339 | body = rdata->msg->body; |
| 340 | if (!body) |
| 341 | return; |
| 342 | |
| 343 | for (i=0; i<sizeof(accept_types)/sizeof(accept_types[0]); ++i) { |
| 344 | if (!pj_stricmp(&body->content_type.type, &accept_types[i].type) && |
| 345 | !pj_stricmp(&body->content_type.subtype, &accept_types[i].subtype)) |
| 346 | { |
| 347 | break; |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | if (i==PJSIP_PRES_TYPE_PIDF) { |
| 352 | pjpidf_pres *pres; |
| 353 | pjpidf_tuple *tuple; |
| 354 | pjpidf_status *status; |
| 355 | |
| 356 | pres = pjpidf_parse(rdata->pool, body->data, body->len); |
| 357 | if (!pres) |
| 358 | return; |
| 359 | tuple = pjpidf_pres_get_first_tuple(pres); |
| 360 | if (!tuple) |
| 361 | return; |
| 362 | status = pjpidf_tuple_get_status(tuple); |
| 363 | if (!status) |
| 364 | return; |
| 365 | is_open = pjpidf_status_is_basic_open(status); |
| 366 | |
| 367 | } else if (i==PJSIP_PRES_TYPE_XPIDF) { |
| 368 | pjxpidf_pres *pres; |
| 369 | |
| 370 | pres = pjxpidf_parse(rdata->pool, body->data, body->len); |
| 371 | if (!pres) |
| 372 | return; |
| 373 | is_open = pjxpidf_get_status(pres); |
| 374 | |
| 375 | } else { |
| 376 | return; |
| 377 | } |
| 378 | |
| 379 | (*cb.on_received_update)(pres, is_open); |
| 380 | } |
| 381 | } |
| 382 | |