* \author Russell Bryant <russell@digium.com>
*/
-#include "asterisk.h"
+/*** MODULEINFO
+ <support_level>core</support_level>
+ ***/
-ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+#include "asterisk.h"
#include "asterisk/_private.h"
#include "asterisk/astobj2.h"
#include "asterisk/cli.h"
-static struct ast_taskprocessor *event_dispatcher;
-
/*!
* \brief An event information element
*
} __attribute__((packed));
-/*!
- * \brief A holder for an event
- *
- * \details This struct used to have more of a purpose than it does now.
- * It is used to hold events in the event cache. It can be completely removed
- * if one of these two things is done:
- * - ast_event gets changed such that it never has to be realloc()d
- * - astobj2 is updated so that you can realloc() an astobj2 object
- */
-struct ast_event_ref {
- struct ast_event *event;
-};
-
struct ast_event_ie_val {
AST_LIST_ENTRY(ast_event_ie_val) entry;
enum ast_event_ie_type ie_type;
size_t raw_datalen;
};
-/*! \brief Event subscription */
-struct ast_event_sub {
- enum ast_event_type type;
- ast_event_cb_t cb;
- char description[64];
- void *userdata;
- uint32_t uniqueid;
- AST_LIST_HEAD_NOLOCK(, ast_event_ie_val) ie_vals;
- AST_RWDLLIST_ENTRY(ast_event_sub) entry;
-};
-
-static uint32_t sub_uniqueid;
-
-/*! \brief Event subscriptions
- * The event subscribers are indexed by which event they are subscribed to */
-static AST_RWDLLIST_HEAD(ast_event_sub_list, ast_event_sub) ast_event_subs[AST_EVENT_TOTAL];
-
-static int ast_event_cmp(void *obj, void *arg, int flags);
-static int ast_event_hash_mwi(const void *obj, const int flags);
-static int ast_event_hash_devstate(const void *obj, const int flags);
-static int ast_event_hash_devstate_change(const void *obj, const int flags);
-
-#ifdef LOW_MEMORY
-#define NUM_CACHE_BUCKETS 17
-#else
-#define NUM_CACHE_BUCKETS 563
-#endif
-
-#define MAX_CACHE_ARGS 8
-
-/*!
- * \brief Event types that are kept in the cache.
- */
-static struct {
- /*!
- * \brief Container of cached events
- *
- * \details This gets allocated in ast_event_init() when Asterisk starts
- * for the event types declared as using the cache.
- */
- struct ao2_container *container;
- /*! \brief Event type specific hash function */
- ao2_hash_fn *hash_fn;
- /*!
- * \brief Information Elements used for caching
- *
- * \details This array is the set of information elements that will be unique
- * among all events in the cache for this event type. When a new event gets
- * cached, a previous event with the same values for these information elements
- * will be replaced.
- */
- enum ast_event_ie_type cache_args[MAX_CACHE_ARGS];
-} ast_event_cache[AST_EVENT_TOTAL] = {
- [AST_EVENT_MWI] = {
- .hash_fn = ast_event_hash_mwi,
- .cache_args = { AST_EVENT_IE_MAILBOX, AST_EVENT_IE_CONTEXT },
- },
- [AST_EVENT_DEVICE_STATE] = {
- .hash_fn = ast_event_hash_devstate,
- .cache_args = { AST_EVENT_IE_DEVICE, },
- },
- [AST_EVENT_DEVICE_STATE_CHANGE] = {
- .hash_fn = ast_event_hash_devstate_change,
- .cache_args = { AST_EVENT_IE_DEVICE, AST_EVENT_IE_EID, },
- },
-};
-
-/*!
- * \brief Names of cached event types, for CLI tab completion
- *
- * \note These names must match what is in the event_names array.
- */
-static const char * const cached_event_types[] = { "MWI", "DeviceState", "DeviceStateChange", NULL };
-
/*!
* \brief Event Names
*/
static const char * const event_names[AST_EVENT_TOTAL] = {
+ [AST_EVENT_ALL] = "All",
[AST_EVENT_CUSTOM] = "Custom",
[AST_EVENT_MWI] = "MWI",
[AST_EVENT_SUB] = "Subscription",
[AST_EVENT_CEL] = "CEL",
[AST_EVENT_SECURITY] = "Security",
[AST_EVENT_NETWORK_CHANGE] = "NetworkChange",
+ [AST_EVENT_PRESENCE_STATE] = "PresenceState",
+ [AST_EVENT_ACL_CHANGE] = "ACLChange",
+ [AST_EVENT_PING] = "Ping",
};
/*!
[AST_EVENT_IE_CEL_EVENT_TYPE] = { AST_EVENT_IE_PLTYPE_UINT, "CELEventType" },
[AST_EVENT_IE_CEL_EVENT_TIME] = { AST_EVENT_IE_PLTYPE_UINT, "CELEventTime" },
[AST_EVENT_IE_CEL_EVENT_TIME_USEC] = { AST_EVENT_IE_PLTYPE_UINT, "CELEventTimeUSec" },
- [AST_EVENT_IE_CEL_USEREVENT_NAME] = { AST_EVENT_IE_PLTYPE_UINT, "CELUserEventName" },
+ [AST_EVENT_IE_CEL_USEREVENT_NAME] = { AST_EVENT_IE_PLTYPE_STR, "CELUserEventName" },
[AST_EVENT_IE_CEL_CIDNAME] = { AST_EVENT_IE_PLTYPE_STR, "CELCIDName" },
[AST_EVENT_IE_CEL_CIDNUM] = { AST_EVENT_IE_PLTYPE_STR, "CELCIDNum" },
[AST_EVENT_IE_CEL_EXTEN] = { AST_EVENT_IE_PLTYPE_STR, "CELExten" },
[AST_EVENT_IE_CEL_CHANNAME] = { AST_EVENT_IE_PLTYPE_STR, "CELChanName" },
[AST_EVENT_IE_CEL_APPNAME] = { AST_EVENT_IE_PLTYPE_STR, "CELAppName" },
[AST_EVENT_IE_CEL_APPDATA] = { AST_EVENT_IE_PLTYPE_STR, "CELAppData" },
- [AST_EVENT_IE_CEL_AMAFLAGS] = { AST_EVENT_IE_PLTYPE_STR, "CELAMAFlags" },
- [AST_EVENT_IE_CEL_ACCTCODE] = { AST_EVENT_IE_PLTYPE_UINT, "CELAcctCode" },
+ [AST_EVENT_IE_CEL_AMAFLAGS] = { AST_EVENT_IE_PLTYPE_UINT, "CELAMAFlags" },
+ [AST_EVENT_IE_CEL_ACCTCODE] = { AST_EVENT_IE_PLTYPE_STR, "CELAcctCode" },
[AST_EVENT_IE_CEL_UNIQUEID] = { AST_EVENT_IE_PLTYPE_STR, "CELUniqueID" },
[AST_EVENT_IE_CEL_USERFIELD] = { AST_EVENT_IE_PLTYPE_STR, "CELUserField" },
[AST_EVENT_IE_CEL_CIDANI] = { AST_EVENT_IE_PLTYPE_STR, "CELCIDani" },
[AST_EVENT_IE_CEL_LINKEDID] = { AST_EVENT_IE_PLTYPE_STR, "CELLinkedID" },
[AST_EVENT_IE_CEL_PEERACCT] = { AST_EVENT_IE_PLTYPE_STR, "CELPeerAcct" },
[AST_EVENT_IE_CEL_EXTRA] = { AST_EVENT_IE_PLTYPE_STR, "CELExtra" },
- [AST_EVENT_IE_SECURITY_EVENT] = { AST_EVENT_IE_PLTYPE_STR, "SecurityEvent" },
+ [AST_EVENT_IE_SECURITY_EVENT] = { AST_EVENT_IE_PLTYPE_UINT, "SecurityEvent" },
[AST_EVENT_IE_EVENT_VERSION] = { AST_EVENT_IE_PLTYPE_UINT, "EventVersion" },
[AST_EVENT_IE_SERVICE] = { AST_EVENT_IE_PLTYPE_STR, "Service" },
[AST_EVENT_IE_MODULE] = { AST_EVENT_IE_PLTYPE_STR, "Module" },
[AST_EVENT_IE_CHALLENGE] = { AST_EVENT_IE_PLTYPE_STR, "Challenge" },
[AST_EVENT_IE_RESPONSE] = { AST_EVENT_IE_PLTYPE_STR, "Response" },
[AST_EVENT_IE_EXPECTED_RESPONSE] = { AST_EVENT_IE_PLTYPE_STR, "ExpectedResponse" },
+ [AST_EVENT_IE_RECEIVED_CHALLENGE] = { AST_EVENT_IE_PLTYPE_STR, "ReceivedChallenge" },
+ [AST_EVENT_IE_RECEIVED_HASH] = { AST_EVENT_IE_PLTYPE_STR, "ReceivedHash" },
+ [AST_EVENT_IE_USING_PASSWORD] = { AST_EVENT_IE_PLTYPE_UINT, "UsingPassword" },
+ [AST_EVENT_IE_ATTEMPTED_TRANSPORT] = { AST_EVENT_IE_PLTYPE_STR, "AttemptedTransport" },
+ [AST_EVENT_IE_CACHABLE] = { AST_EVENT_IE_PLTYPE_UINT, "Cachable" },
+ [AST_EVENT_IE_PRESENCE_PROVIDER] = { AST_EVENT_IE_PLTYPE_STR, "PresenceProvider" },
+ [AST_EVENT_IE_PRESENCE_STATE] = { AST_EVENT_IE_PLTYPE_UINT, "PresenceState" },
+ [AST_EVENT_IE_PRESENCE_SUBTYPE] = { AST_EVENT_IE_PLTYPE_STR, "PresenceSubtype" },
+ [AST_EVENT_IE_PRESENCE_MESSAGE] = { AST_EVENT_IE_PLTYPE_STR, "PresenceMessage" },
};
const char *ast_event_get_type_name(const struct ast_event *event)
type = ast_event_get_type(event);
- if (type < 0 || type >= ARRAY_LEN(event_names)) {
- ast_log(LOG_ERROR, "Invalid event type - '%d'\n", type);
+ if ((unsigned int)type >= ARRAY_LEN(event_names)) {
+ ast_log(LOG_ERROR, "Invalid event type - '%u'\n", type);
return "";
}
return event_names[type];
}
-int ast_event_str_to_event_type(const char *str, enum ast_event_type *event_type)
-{
- int i;
-
- for (i = 0; i < ARRAY_LEN(event_names); i++) {
- if (ast_strlen_zero(event_names[i]) || strcasecmp(event_names[i], str)) {
- continue;
- }
-
- *event_type = i;
- return 0;
- }
-
- return -1;
-}
-
const char *ast_event_get_ie_type_name(enum ast_event_ie_type ie_type)
{
if (ie_type <= 0 || ie_type >= ARRAY_LEN(ie_maps)) {
return ie_maps[ie_type].ie_pltype;
}
-int ast_event_str_to_ie_type(const char *str, enum ast_event_ie_type *ie_type)
+size_t ast_event_get_size(const struct ast_event *event)
{
- int i;
+ size_t res;
- for (i = 0; i < ARRAY_LEN(ie_maps); i++) {
- if (strcasecmp(ie_maps[i].name, str)) {
- continue;
- }
+ res = ntohs(event->event_len);
+
+ return res;
+}
+
+/*! \brief Subscription event check list. */
+struct ast_ev_check_list {
+ AST_LIST_HEAD_NOLOCK(, ast_event_ie_val) ie_vals;
+};
+
+int ast_event_iterator_init(struct ast_event_iterator *iterator, const struct ast_event *event)
+{
+ int res = 0;
- *ie_type = i;
- return 0;
+ iterator->event_len = ast_event_get_size(event);
+ iterator->event = event;
+ if (iterator->event_len >= sizeof(*event) + sizeof(struct ast_event_ie)) {
+ iterator->ie = (struct ast_event_ie *) ( ((char *) event) + sizeof(*event) );
+ } else {
+ iterator->ie = NULL;
+ res = -1;
}
- return -1;
+ return res;
}
-size_t ast_event_get_size(const struct ast_event *event)
+int ast_event_iterator_next(struct ast_event_iterator *iterator)
{
- size_t res;
+ iterator->ie = (struct ast_event_ie *) ( ((char *) iterator->ie) + sizeof(*iterator->ie) + ntohs(iterator->ie->ie_payload_len));
+ return ((iterator->event_len <= (((char *) iterator->ie) - ((char *) iterator->event))) ? -1 : 0);
+}
- res = ntohs(event->event_len);
+enum ast_event_ie_type ast_event_iterator_get_ie_type(struct ast_event_iterator *iterator)
+{
+ return ntohs(iterator->ie->ie_type);
+}
- return res;
+uint32_t ast_event_iterator_get_ie_uint(struct ast_event_iterator *iterator)
+{
+ return ntohl(get_unaligned_uint32(iterator->ie->ie_payload));
}
-static void ast_event_ie_val_destroy(struct ast_event_ie_val *ie_val)
+const char *ast_event_iterator_get_ie_str(struct ast_event_iterator *iterator)
{
- switch (ie_val->ie_pltype) {
- case AST_EVENT_IE_PLTYPE_STR:
- ast_free((char *) ie_val->payload.str);
- break;
- case AST_EVENT_IE_PLTYPE_RAW:
- ast_free(ie_val->payload.raw);
- break;
- case AST_EVENT_IE_PLTYPE_UINT:
- case AST_EVENT_IE_PLTYPE_BITFLAGS:
- case AST_EVENT_IE_PLTYPE_EXISTS:
- case AST_EVENT_IE_PLTYPE_UNKNOWN:
- break;
- }
+ const struct ast_event_ie_str_payload *str_payload;
+
+ str_payload = (struct ast_event_ie_str_payload *) iterator->ie->ie_payload;
- ast_free(ie_val);
+ return str_payload ? str_payload->str : NULL;
}
-/*!
- * \internal
- * \brief Check if an ie_val matches a subscription
- *
- * \param sub subscription to check against
- * \param ie_val IE value to check
- *
- * \retval 0 not matched
- * \retval non-zero matched
- */
-static int match_ie_val_to_sub(const struct ast_event_sub *sub, const struct ast_event_ie_val *ie_val)
+static void *event_iterator_get_ie_raw(struct ast_event_iterator *iterator)
{
- const struct ast_event_ie_val *sub_ie_val;
- int res = 1;
+ return iterator->ie->ie_payload;
+}
- AST_LIST_TRAVERSE(&sub->ie_vals, sub_ie_val, entry) {
- if (sub_ie_val->ie_type == ie_val->ie_type) {
- break;
+enum ast_event_type ast_event_get_type(const struct ast_event *event)
+{
+ return ntohs(event->type);
+}
+
+uint32_t ast_event_get_ie_uint(const struct ast_event *event, enum ast_event_ie_type ie_type)
+{
+ const uint32_t *ie_val;
+
+ ie_val = ast_event_get_ie_raw(event, ie_type);
+
+ return ie_val ? ntohl(get_unaligned_uint32(ie_val)) : 0;
+}
+
+const char *ast_event_get_ie_str(const struct ast_event *event, enum ast_event_ie_type ie_type)
+{
+ const struct ast_event_ie_str_payload *str_payload;
+
+ str_payload = ast_event_get_ie_raw(event, ie_type);
+
+ return str_payload ? str_payload->str : NULL;
+}
+
+const void *ast_event_get_ie_raw(const struct ast_event *event, enum ast_event_ie_type ie_type)
+{
+ struct ast_event_iterator iterator;
+ int res;
+
+ for (res = ast_event_iterator_init(&iterator, event); !res; res = ast_event_iterator_next(&iterator)) {
+ if (ast_event_iterator_get_ie_type(&iterator) == ie_type) {
+ return event_iterator_get_ie_raw(&iterator);
}
}
- if (!sub_ie_val) {
- /* This subscriber doesn't care about this IE, so consider
- * it matched. */
- return 1;
+ return NULL;
+}
+
+static uint16_t event_iterator_get_ie_raw_payload_len(struct ast_event_iterator *iterator)
+{
+ return ntohs(iterator->ie->ie_payload_len);
+}
+
+uint16_t ast_event_get_ie_raw_payload_len(const struct ast_event *event, enum ast_event_ie_type ie_type)
+{
+ struct ast_event_iterator iterator;
+ int res;
+
+ for (res = ast_event_iterator_init(&iterator, event); !res; res = ast_event_iterator_next(&iterator)) {
+ if (ast_event_iterator_get_ie_type(&iterator) == ie_type) {
+ return event_iterator_get_ie_raw_payload_len(&iterator);
+ }
}
- switch (ie_val->ie_pltype) {
- case AST_EVENT_IE_PLTYPE_UINT:
- res = (ie_val->payload.uint != sub_ie_val->payload.uint);
- break;
- case AST_EVENT_IE_PLTYPE_BITFLAGS:
- /*
- * If the subscriber has requested *any* of the bitflags we are providing,
- * then it's a match.
- */
- res = !(ie_val->payload.uint & sub_ie_val->payload.uint);
- break;
- case AST_EVENT_IE_PLTYPE_STR:
- res = strcmp(ie_val->payload.str, sub_ie_val->payload.str);
- break;
- case AST_EVENT_IE_PLTYPE_RAW:
- res = memcmp(ie_val->payload.raw,
- sub_ie_val->payload.raw, ie_val->raw_datalen);
- break;
- case AST_EVENT_IE_PLTYPE_EXISTS:
- case AST_EVENT_IE_PLTYPE_UNKNOWN:
- break;
+ return 0;
+}
+
+
+int ast_event_append_ie_str(struct ast_event **event, enum ast_event_ie_type ie_type,
+ const char *str)
+{
+ struct ast_event_ie_str_payload *str_payload;
+ size_t payload_len;
+
+ payload_len = sizeof(*str_payload) + strlen(str);
+ str_payload = ast_alloca(payload_len);
+
+ strcpy(str_payload->str, str);
+ str_payload->hash = ast_str_hash(str);
+
+ return ast_event_append_ie_raw(event, ie_type, str_payload, payload_len);
+}
+
+int ast_event_append_ie_uint(struct ast_event **event, enum ast_event_ie_type ie_type,
+ uint32_t data)
+{
+ data = htonl(data);
+ return ast_event_append_ie_raw(event, ie_type, &data, sizeof(data));
+}
+
+int ast_event_append_ie_bitflags(struct ast_event **event, enum ast_event_ie_type ie_type,
+ uint32_t flags)
+{
+ flags = htonl(flags);
+ return ast_event_append_ie_raw(event, ie_type, &flags, sizeof(flags));
+}
+
+int ast_event_append_ie_raw(struct ast_event **event, enum ast_event_ie_type ie_type,
+ const void *data, size_t data_len)
+{
+ struct ast_event_ie *ie;
+ struct ast_event *old_event;
+ unsigned int extra_len;
+ uint16_t event_len;
+
+ event_len = ntohs((*event)->event_len);
+ extra_len = sizeof(*ie) + data_len;
+
+ old_event = *event;
+ *event = ast_realloc(*event, event_len + extra_len);
+ if (!*event) {
+ ast_free(old_event);
+ return -1;
}
- return res;
+ ie = (struct ast_event_ie *) ( ((char *) *event) + event_len );
+ ie->ie_type = htons(ie_type);
+ ie->ie_payload_len = htons(data_len);
+ memcpy(ie->ie_payload, data, data_len);
+
+ (*event)->event_len = htons(event_len + extra_len);
+
+ return 0;
}
-enum ast_event_subscriber_res ast_event_check_subscriber(enum ast_event_type type, ...)
+struct ast_event *ast_event_new(enum ast_event_type type, ...)
{
va_list ap;
+ struct ast_event *event;
enum ast_event_ie_type ie_type;
- enum ast_event_subscriber_res res = AST_EVENT_SUB_NONE;
struct ast_event_ie_val *ie_val;
- struct ast_event_sub *sub;
AST_LIST_HEAD_NOLOCK_STATIC(ie_vals, ast_event_ie_val);
- const enum ast_event_type event_types[] = { type, AST_EVENT_ALL };
- int i;
+ /* Invalid type */
if (type >= AST_EVENT_TOTAL) {
- ast_log(LOG_ERROR, "%u is an invalid type!\n", type);
- return res;
+ ast_log(LOG_WARNING, "Someone tried to create an event of invalid "
+ "type '%u'!\n", type);
+ return NULL;
}
va_start(ap, type);
ie_type != AST_EVENT_IE_END;
ie_type = va_arg(ap, enum ast_event_ie_type))
{
- struct ast_event_ie_val *ie_value = alloca(sizeof(*ie_value));
- int insert = 1;
+ struct ast_event_ie_val *ie_value = ast_alloca(sizeof(*ie_value));
+ int insert = 0;
+
memset(ie_value, 0, sizeof(*ie_value));
ie_value->ie_type = ie_type;
ie_value->ie_pltype = va_arg(ap, enum ast_event_ie_pltype);
+
switch (ie_value->ie_pltype) {
case AST_EVENT_IE_PLTYPE_UINT:
ie_value->payload.uint = va_arg(ap, uint32_t);
+ insert = 1;
break;
case AST_EVENT_IE_PLTYPE_BITFLAGS:
ie_value->payload.uint = va_arg(ap, uint32_t);
+ insert = 1;
break;
case AST_EVENT_IE_PLTYPE_STR:
ie_value->payload.str = va_arg(ap, const char *);
+ insert = 1;
break;
case AST_EVENT_IE_PLTYPE_RAW:
{
void *data = va_arg(ap, void *);
size_t datalen = va_arg(ap, size_t);
- ie_value->payload.raw = alloca(datalen);
+ ie_value->payload.raw = ast_alloca(datalen);
memcpy(ie_value->payload.raw, data, datalen);
ie_value->raw_datalen = datalen;
+ insert = 1;
break;
}
case AST_EVENT_IE_PLTYPE_UNKNOWN:
- insert = 0;
case AST_EVENT_IE_PLTYPE_EXISTS:
break;
}
if (insert) {
AST_LIST_INSERT_TAIL(&ie_vals, ie_value, entry);
+ } else {
+ ast_log(LOG_WARNING, "Unsupported PLTYPE(%d)\n", ie_value->ie_pltype);
}
}
va_end(ap);
- for (i = 0; i < ARRAY_LEN(event_types); i++) {
- AST_RWDLLIST_RDLOCK(&ast_event_subs[event_types[i]]);
- AST_RWDLLIST_TRAVERSE(&ast_event_subs[event_types[i]], sub, entry) {
- AST_LIST_TRAVERSE(&ie_vals, ie_val, entry) {
- if (match_ie_val_to_sub(sub, ie_val)) {
- break;
- }
- }
-
- if (!ie_val) {
- /* Everything matched. */
- break;
- }
- }
- AST_RWDLLIST_UNLOCK(&ast_event_subs[event_types[i]]);
- if (sub) {
- break;
- }
- }
-
- return sub ? AST_EVENT_SUB_EXISTS : AST_EVENT_SUB_NONE;
-}
-
-/*!
- * \internal
- * \brief Check if an ie_val matches an event
- *
- * \param event event to check against
- * \param ie_val IE value to check
- * \param event2 optional event, if specified, the value to compare against will be pulled
- * from this event instead of from the ie_val structure. In this case, only the IE
- * type and payload type will be pulled from ie_val.
- *
- * \retval 0 not matched
- * \retval non-zero matched
- */
-static int match_ie_val(const struct ast_event *event,
- const struct ast_event_ie_val *ie_val, const struct ast_event *event2)
-{
- switch (ie_val->ie_pltype) {
- case AST_EVENT_IE_PLTYPE_UINT:
- {
- uint32_t val = event2 ? ast_event_get_ie_uint(event2, ie_val->ie_type) : ie_val->payload.uint;
-
- return (val == ast_event_get_ie_uint(event, ie_val->ie_type)) ? 1 : 0;
- }
-
- case AST_EVENT_IE_PLTYPE_BITFLAGS:
- {
- uint32_t flags = event2 ? ast_event_get_ie_uint(event2, ie_val->ie_type) : ie_val->payload.uint;
-
- /*
- * If the subscriber has requested *any* of the bitflags that this event provides,
- * then it's a match.
- */
- return (flags & ast_event_get_ie_bitflags(event, ie_val->ie_type)) ? 1 : 0;
+ if (!(event = ast_calloc(1, sizeof(*event)))) {
+ return NULL;
}
- case AST_EVENT_IE_PLTYPE_STR:
- {
- const char *str;
- uint32_t hash;
+ event->type = htons(type);
+ event->event_len = htons(sizeof(*event));
- hash = event2 ? ast_event_get_ie_str_hash(event2, ie_val->ie_type) : ie_val->payload.hash;
- if (hash != ast_event_get_ie_str_hash(event, ie_val->ie_type)) {
- return 0;
+ AST_LIST_TRAVERSE(&ie_vals, ie_val, entry) {
+ switch (ie_val->ie_pltype) {
+ case AST_EVENT_IE_PLTYPE_STR:
+ ast_event_append_ie_str(&event, ie_val->ie_type, ie_val->payload.str);
+ break;
+ case AST_EVENT_IE_PLTYPE_UINT:
+ ast_event_append_ie_uint(&event, ie_val->ie_type, ie_val->payload.uint);
+ break;
+ case AST_EVENT_IE_PLTYPE_BITFLAGS:
+ ast_event_append_ie_bitflags(&event, ie_val->ie_type, ie_val->payload.uint);
+ break;
+ case AST_EVENT_IE_PLTYPE_RAW:
+ ast_event_append_ie_raw(&event, ie_val->ie_type,
+ ie_val->payload.raw, ie_val->raw_datalen);
+ break;
+ case AST_EVENT_IE_PLTYPE_EXISTS:
+ case AST_EVENT_IE_PLTYPE_UNKNOWN:
+ break;
}
- str = event2 ? ast_event_get_ie_str(event2, ie_val->ie_type) : ie_val->payload.str;
- if (str && !strcmp(str, ast_event_get_ie_str(event, ie_val->ie_type))) {
- return 1;
+ /* realloc inside one of the append functions failed */
+ if (!event) {
+ return NULL;
}
-
- return 0;
- }
-
- case AST_EVENT_IE_PLTYPE_RAW:
- {
- const void *buf = event2 ? ast_event_get_ie_raw(event2, ie_val->ie_type) : ie_val->payload.raw;
- uint16_t ie_payload_len = event2 ? ast_event_get_ie_raw_payload_len(event2, ie_val->ie_type) : ie_val->raw_datalen;
-
- return (buf && !memcmp(buf, ast_event_get_ie_raw(event, ie_val->ie_type), ie_payload_len)) ? 1 : 0;
- }
-
- case AST_EVENT_IE_PLTYPE_EXISTS:
- {
- return ast_event_get_ie_raw(event, ie_val->ie_type) ? 1 : 0;
}
- case AST_EVENT_IE_PLTYPE_UNKNOWN:
- return 0;
+ if (!ast_event_get_ie_raw(event, AST_EVENT_IE_EID)) {
+ /* If the event is originating on this server, add the server's
+ * entity ID to the event. */
+ ast_event_append_eid(&event);
}
- return 0;
+ return event;
}
-static int dump_cache_cb(void *obj, void *arg, int flags)
+int ast_event_append_eid(struct ast_event **event)
{
- const struct ast_event_ref *event_ref = obj;
- const struct ast_event *event = event_ref->event;
- const struct ast_event_sub *event_sub = arg;
- struct ast_event_ie_val *ie_val = NULL;
-
- AST_LIST_TRAVERSE(&event_sub->ie_vals, ie_val, entry) {
- if (!match_ie_val(event, ie_val, NULL)) {
- break;
- }
- }
-
- if (!ie_val) {
- /* All parameters were matched on this cache entry, so dump it */
- event_sub->cb(event, event_sub->userdata);
- }
-
- return 0;
+ return ast_event_append_ie_raw(event, AST_EVENT_IE_EID,
+ &ast_eid_default, sizeof(ast_eid_default));
}
-/*! \brief Dump the event cache for the subscribed event type */
-void ast_event_dump_cache(const struct ast_event_sub *event_sub)
+void ast_event_destroy(struct ast_event *event)
{
- ao2_callback(ast_event_cache[event_sub->type].container, OBJ_NODATA,
- dump_cache_cb, (void *) event_sub);
+ ast_free(event);
}
-static struct ast_event *gen_sub_event(struct ast_event_sub *sub)
+size_t ast_event_minimum_length(void)
{
- struct ast_event_ie_val *ie_val;
- struct ast_event *event;
-
- event = ast_event_new(AST_EVENT_SUB,
- AST_EVENT_IE_UNIQUEID, AST_EVENT_IE_PLTYPE_UINT, sub->uniqueid,
- AST_EVENT_IE_EVENTTYPE, AST_EVENT_IE_PLTYPE_UINT, sub->type,
- AST_EVENT_IE_DESCRIPTION, AST_EVENT_IE_PLTYPE_STR, sub->description,
- AST_EVENT_IE_END);
-
- if (!event)
- return NULL;
-
- AST_LIST_TRAVERSE(&sub->ie_vals, ie_val, entry) {
- switch (ie_val->ie_pltype) {
- case AST_EVENT_IE_PLTYPE_UNKNOWN:
- break;
- case AST_EVENT_IE_PLTYPE_EXISTS:
- ast_event_append_ie_uint(&event, AST_EVENT_IE_EXISTS, ie_val->ie_type);
- break;
- case AST_EVENT_IE_PLTYPE_UINT:
- ast_event_append_ie_uint(&event, ie_val->ie_type, ie_val->payload.uint);
- break;
- case AST_EVENT_IE_PLTYPE_BITFLAGS:
- ast_event_append_ie_bitflags(&event, ie_val->ie_type, ie_val->payload.uint);
- break;
- case AST_EVENT_IE_PLTYPE_STR:
- ast_event_append_ie_str(&event, ie_val->ie_type, ie_val->payload.str);
- break;
- case AST_EVENT_IE_PLTYPE_RAW:
- ast_event_append_ie_raw(&event, ie_val->ie_type, ie_val->payload.raw, ie_val->raw_datalen);
- break;
- }
- if (!event)
- break;
- }
-
- return event;
-}
-
-/*! \brief Send AST_EVENT_SUB events to this subscriber of ... subscriber events */
-void ast_event_report_subs(const struct ast_event_sub *event_sub)
-{
- struct ast_event *event;
- struct ast_event_sub *sub;
- enum ast_event_type event_type = -1;
- struct ast_event_ie_val *ie_val;
-
- if (event_sub->type != AST_EVENT_SUB)
- return;
-
- AST_LIST_TRAVERSE(&event_sub->ie_vals, ie_val, entry) {
- if (ie_val->ie_type == AST_EVENT_IE_EVENTTYPE) {
- event_type = ie_val->payload.uint;
- break;
- }
- }
-
- if (event_type == -1)
- return;
-
- AST_RWDLLIST_RDLOCK(&ast_event_subs[event_type]);
- AST_RWDLLIST_TRAVERSE(&ast_event_subs[event_type], sub, entry) {
- if (event_sub == sub) {
- continue;
- }
-
- event = gen_sub_event(sub);
-
- if (!event) {
- continue;
- }
-
- event_sub->cb(event, event_sub->userdata);
-
- ast_event_destroy(event);
- }
- AST_RWDLLIST_UNLOCK(&ast_event_subs[event_type]);
-}
-
-struct ast_event_sub *ast_event_subscribe_new(enum ast_event_type type,
- ast_event_cb_t cb, void *userdata)
-{
- struct ast_event_sub *sub;
-
- if (type < 0 || type >= AST_EVENT_TOTAL) {
- ast_log(LOG_ERROR, "%u is an invalid type!\n", type);
- return NULL;
- }
-
- if (!(sub = ast_calloc(1, sizeof(*sub)))) {
- return NULL;
- }
-
- sub->type = type;
- sub->cb = cb;
- sub->userdata = userdata;
- sub->uniqueid = ast_atomic_fetchadd_int((int *) &sub_uniqueid, 1);
-
- return sub;
-}
-
-int ast_event_sub_append_ie_uint(struct ast_event_sub *sub,
- enum ast_event_ie_type ie_type, uint32_t unsigned_int)
-{
- struct ast_event_ie_val *ie_val;
-
- if (ie_type <= 0 || ie_type >= AST_EVENT_IE_TOTAL) {
- return -1;
- }
-
- if (!(ie_val = ast_calloc(1, sizeof(*ie_val)))) {
- return -1;
- }
-
- ie_val->ie_type = ie_type;
- ie_val->payload.uint = unsigned_int;
- ie_val->ie_pltype = AST_EVENT_IE_PLTYPE_UINT;
-
- AST_LIST_INSERT_TAIL(&sub->ie_vals, ie_val, entry);
-
- return 0;
-}
-
-int ast_event_sub_append_ie_bitflags(struct ast_event_sub *sub,
- enum ast_event_ie_type ie_type, uint32_t flags)
-{
- struct ast_event_ie_val *ie_val;
-
- if (ie_type <= 0 || ie_type >= AST_EVENT_IE_TOTAL) {
- return -1;
- }
-
- if (!(ie_val = ast_calloc(1, sizeof(*ie_val)))) {
- return -1;
- }
-
- ie_val->ie_type = ie_type;
- ie_val->payload.uint = flags;
- ie_val->ie_pltype = AST_EVENT_IE_PLTYPE_BITFLAGS;
-
- AST_LIST_INSERT_TAIL(&sub->ie_vals, ie_val, entry);
-
- return 0;
-}
-
-int ast_event_sub_append_ie_exists(struct ast_event_sub *sub,
- enum ast_event_ie_type ie_type)
-{
- struct ast_event_ie_val *ie_val;
-
- if (ie_type <= 0 || ie_type >= AST_EVENT_IE_TOTAL) {
- return -1;
- }
-
- if (!(ie_val = ast_calloc(1, sizeof(*ie_val)))) {
- return -1;
- }
-
- ie_val->ie_type = ie_type;
- ie_val->ie_pltype = AST_EVENT_IE_PLTYPE_EXISTS;
-
- AST_LIST_INSERT_TAIL(&sub->ie_vals, ie_val, entry);
-
- return 0;
-}
-
-int ast_event_sub_append_ie_str(struct ast_event_sub *sub,
- enum ast_event_ie_type ie_type, const char *str)
-{
- struct ast_event_ie_val *ie_val;
-
- if (ie_type <= 0 || ie_type >= AST_EVENT_IE_TOTAL) {
- return -1;
- }
-
- if (!(ie_val = ast_calloc(1, sizeof(*ie_val)))) {
- return -1;
- }
-
- ie_val->ie_type = ie_type;
- ie_val->ie_pltype = AST_EVENT_IE_PLTYPE_STR;
-
- if (!(ie_val->payload.str = ast_strdup(str))) {
- ast_free(ie_val);
- return -1;
- }
-
- ie_val->payload.hash = ast_str_hash(str);
-
- AST_LIST_INSERT_TAIL(&sub->ie_vals, ie_val, entry);
-
- return 0;
-}
-
-int ast_event_sub_append_ie_raw(struct ast_event_sub *sub,
- enum ast_event_ie_type ie_type, void *data, size_t raw_datalen)
-{
- struct ast_event_ie_val *ie_val;
-
- if (ie_type <= 0 || ie_type >= AST_EVENT_IE_TOTAL) {
- return -1;
- }
-
- if (!(ie_val = ast_calloc(1, sizeof(*ie_val)))) {
- return -1;
- }
-
- ie_val->ie_type = ie_type;
- ie_val->ie_pltype = AST_EVENT_IE_PLTYPE_RAW;
- ie_val->raw_datalen = raw_datalen;
-
- if (!(ie_val->payload.raw = ast_malloc(raw_datalen))) {
- ast_free(ie_val);
- return -1;
- }
-
- memcpy(ie_val->payload.raw, data, raw_datalen);
-
- AST_LIST_INSERT_TAIL(&sub->ie_vals, ie_val, entry);
-
- return 0;
-}
-
-int ast_event_sub_activate(struct ast_event_sub *sub)
-{
- if (ast_event_check_subscriber(AST_EVENT_SUB,
- AST_EVENT_IE_EVENTTYPE, AST_EVENT_IE_PLTYPE_UINT, sub->type,
- AST_EVENT_IE_END) != AST_EVENT_SUB_NONE) {
- struct ast_event *event;
-
- event = gen_sub_event(sub);
-
- if (event) {
- ast_event_queue(event);
- }
- }
-
- AST_RWDLLIST_WRLOCK(&ast_event_subs[sub->type]);
- AST_RWDLLIST_INSERT_TAIL(&ast_event_subs[sub->type], sub, entry);
- AST_RWDLLIST_UNLOCK(&ast_event_subs[sub->type]);
-
- return 0;
-}
-
-struct ast_event_sub *ast_event_subscribe(enum ast_event_type type, ast_event_cb_t cb,
- const char *description, void *userdata, ...)
-{
- va_list ap;
- enum ast_event_ie_type ie_type;
- struct ast_event_sub *sub;
-
- if (!(sub = ast_event_subscribe_new(type, cb, userdata))) {
- return NULL;
- }
-
- ast_copy_string(sub->description, description, sizeof(sub->description));
-
- va_start(ap, userdata);
- for (ie_type = va_arg(ap, enum ast_event_ie_type);
- ie_type != AST_EVENT_IE_END;
- ie_type = va_arg(ap, enum ast_event_ie_type))
- {
- enum ast_event_ie_pltype ie_pltype;
-
- ie_pltype = va_arg(ap, enum ast_event_ie_pltype);
-
- switch (ie_pltype) {
- case AST_EVENT_IE_PLTYPE_UNKNOWN:
- break;
- case AST_EVENT_IE_PLTYPE_UINT:
- {
- uint32_t unsigned_int = va_arg(ap, uint32_t);
- ast_event_sub_append_ie_uint(sub, ie_type, unsigned_int);
- break;
- }
- case AST_EVENT_IE_PLTYPE_BITFLAGS:
- {
- uint32_t unsigned_int = va_arg(ap, uint32_t);
- ast_event_sub_append_ie_bitflags(sub, ie_type, unsigned_int);
- break;
- }
- case AST_EVENT_IE_PLTYPE_STR:
- {
- const char *str = va_arg(ap, const char *);
- ast_event_sub_append_ie_str(sub, ie_type, str);
- break;
- }
- case AST_EVENT_IE_PLTYPE_RAW:
- {
- void *data = va_arg(ap, void *);
- size_t data_len = va_arg(ap, size_t);
- ast_event_sub_append_ie_raw(sub, ie_type, data, data_len);
- break;
- }
- case AST_EVENT_IE_PLTYPE_EXISTS:
- ast_event_sub_append_ie_exists(sub, ie_type);
- break;
- }
- }
- va_end(ap);
-
- ast_event_sub_activate(sub);
-
- return sub;
-}
-
-void ast_event_sub_destroy(struct ast_event_sub *sub)
-{
- struct ast_event_ie_val *ie_val;
-
- while ((ie_val = AST_LIST_REMOVE_HEAD(&sub->ie_vals, entry))) {
- ast_event_ie_val_destroy(ie_val);
- }
-
- ast_free(sub);
-}
-
-const char *ast_event_subscriber_get_description(struct ast_event_sub *sub)
-{
- return sub ? sub->description : NULL;
-}
-
-struct ast_event_sub *ast_event_unsubscribe(struct ast_event_sub *sub)
-{
- struct ast_event *event;
-
- AST_RWDLLIST_WRLOCK(&ast_event_subs[sub->type]);
- AST_DLLIST_REMOVE(&ast_event_subs[sub->type], sub, entry);
- AST_RWDLLIST_UNLOCK(&ast_event_subs[sub->type]);
-
- if (ast_event_check_subscriber(AST_EVENT_UNSUB,
- AST_EVENT_IE_EVENTTYPE, AST_EVENT_IE_PLTYPE_UINT, sub->type,
- AST_EVENT_IE_END) != AST_EVENT_SUB_NONE) {
-
- event = ast_event_new(AST_EVENT_UNSUB,
- AST_EVENT_IE_UNIQUEID, AST_EVENT_IE_PLTYPE_UINT, sub->uniqueid,
- AST_EVENT_IE_EVENTTYPE, AST_EVENT_IE_PLTYPE_UINT, sub->type,
- AST_EVENT_IE_DESCRIPTION, AST_EVENT_IE_PLTYPE_STR, sub->description,
- AST_EVENT_IE_END);
-
- if (event) {
- ast_event_queue(event);
- }
- }
-
- ast_event_sub_destroy(sub);
-
- return NULL;
-}
-
-int ast_event_iterator_init(struct ast_event_iterator *iterator, const struct ast_event *event)
-{
- int res = 0;
-
- iterator->event_len = ast_event_get_size(event);
- iterator->event = event;
- if (iterator->event_len >= sizeof(*event) + sizeof(struct ast_event_ie)) {
- iterator->ie = (struct ast_event_ie *) ( ((char *) event) + sizeof(*event) );
- } else {
- iterator->ie = NULL;
- res = -1;
- }
-
- return res;
-}
-
-int ast_event_iterator_next(struct ast_event_iterator *iterator)
-{
- iterator->ie = (struct ast_event_ie *) ( ((char *) iterator->ie) + sizeof(*iterator->ie) + ntohs(iterator->ie->ie_payload_len));
- return ((iterator->event_len <= (((char *) iterator->ie) - ((char *) iterator->event))) ? -1 : 0);
-}
-
-enum ast_event_ie_type ast_event_iterator_get_ie_type(struct ast_event_iterator *iterator)
-{
- return ntohs(iterator->ie->ie_type);
-}
-
-uint32_t ast_event_iterator_get_ie_uint(struct ast_event_iterator *iterator)
-{
- return ntohl(get_unaligned_uint32(iterator->ie->ie_payload));
-}
-
-uint32_t ast_event_iterator_get_ie_bitflags(struct ast_event_iterator *iterator)
-{
- return ntohl(get_unaligned_uint32(iterator->ie->ie_payload));
-}
-
-const char *ast_event_iterator_get_ie_str(struct ast_event_iterator *iterator)
-{
- const struct ast_event_ie_str_payload *str_payload;
-
- str_payload = (struct ast_event_ie_str_payload *) iterator->ie->ie_payload;
-
- return str_payload ? str_payload->str : NULL;
-}
-
-void *ast_event_iterator_get_ie_raw(struct ast_event_iterator *iterator)
-{
- return iterator->ie->ie_payload;
-}
-
-uint16_t ast_event_iterator_get_ie_raw_payload_len(struct ast_event_iterator *iterator)
-{
- return ntohs(iterator->ie->ie_payload_len);
-}
-
-enum ast_event_type ast_event_get_type(const struct ast_event *event)
-{
- return ntohs(event->type);
-}
-
-uint32_t ast_event_get_ie_uint(const struct ast_event *event, enum ast_event_ie_type ie_type)
-{
- const uint32_t *ie_val;
-
- ie_val = ast_event_get_ie_raw(event, ie_type);
-
- return ie_val ? ntohl(get_unaligned_uint32(ie_val)) : 0;
-}
-
-uint32_t ast_event_get_ie_bitflags(const struct ast_event *event, enum ast_event_ie_type ie_type)
-{
- const uint32_t *ie_val;
-
- ie_val = ast_event_get_ie_raw(event, ie_type);
-
- return ie_val ? ntohl(get_unaligned_uint32(ie_val)) : 0;
-}
-
-uint32_t ast_event_get_ie_str_hash(const struct ast_event *event, enum ast_event_ie_type ie_type)
-{
- const struct ast_event_ie_str_payload *str_payload;
-
- str_payload = ast_event_get_ie_raw(event, ie_type);
-
- return str_payload ? str_payload->hash : 0;
-}
-
-const char *ast_event_get_ie_str(const struct ast_event *event, enum ast_event_ie_type ie_type)
-{
- const struct ast_event_ie_str_payload *str_payload;
-
- str_payload = ast_event_get_ie_raw(event, ie_type);
-
- return str_payload ? str_payload->str : NULL;
-}
-
-const void *ast_event_get_ie_raw(const struct ast_event *event, enum ast_event_ie_type ie_type)
-{
- struct ast_event_iterator iterator;
- int res;
-
- for (res = ast_event_iterator_init(&iterator, event); !res; res = ast_event_iterator_next(&iterator)) {
- if (ast_event_iterator_get_ie_type(&iterator) == ie_type) {
- return ast_event_iterator_get_ie_raw(&iterator);
- }
- }
-
- return NULL;
-}
-
-uint16_t ast_event_get_ie_raw_payload_len(const struct ast_event *event, enum ast_event_ie_type ie_type)
-{
- struct ast_event_iterator iterator;
- int res;
-
- for (res = ast_event_iterator_init(&iterator, event); !res; res = ast_event_iterator_next(&iterator)) {
- if (ast_event_iterator_get_ie_type(&iterator) == ie_type) {
- return ast_event_iterator_get_ie_raw_payload_len(&iterator);
- }
- }
-
- return 0;
-}
-
-int ast_event_append_ie_str(struct ast_event **event, enum ast_event_ie_type ie_type,
- const char *str)
-{
- struct ast_event_ie_str_payload *str_payload;
- size_t payload_len;
-
- payload_len = sizeof(*str_payload) + strlen(str);
- str_payload = alloca(payload_len);
-
- strcpy(str_payload->str, str);
- str_payload->hash = ast_str_hash(str);
-
- return ast_event_append_ie_raw(event, ie_type, str_payload, payload_len);
-}
-
-int ast_event_append_ie_uint(struct ast_event **event, enum ast_event_ie_type ie_type,
- uint32_t data)
-{
- data = htonl(data);
- return ast_event_append_ie_raw(event, ie_type, &data, sizeof(data));
-}
-
-int ast_event_append_ie_bitflags(struct ast_event **event, enum ast_event_ie_type ie_type,
- uint32_t flags)
-{
- flags = htonl(flags);
- return ast_event_append_ie_raw(event, ie_type, &flags, sizeof(flags));
-}
-
-int ast_event_append_ie_raw(struct ast_event **event, enum ast_event_ie_type ie_type,
- const void *data, size_t data_len)
-{
- struct ast_event_ie *ie;
- unsigned int extra_len;
- uint16_t event_len;
-
- event_len = ntohs((*event)->event_len);
- extra_len = sizeof(*ie) + data_len;
-
- if (!(*event = ast_realloc(*event, event_len + extra_len))) {
- return -1;
- }
-
- ie = (struct ast_event_ie *) ( ((char *) *event) + event_len );
- ie->ie_type = htons(ie_type);
- ie->ie_payload_len = htons(data_len);
- memcpy(ie->ie_payload, data, data_len);
-
- (*event)->event_len = htons(event_len + extra_len);
-
- return 0;
-}
-
-struct ast_event *ast_event_new(enum ast_event_type type, ...)
-{
- va_list ap;
- struct ast_event *event;
- enum ast_event_ie_type ie_type;
- struct ast_event_ie_val *ie_val;
- int has_ie = 0;
- AST_LIST_HEAD_NOLOCK_STATIC(ie_vals, ast_event_ie_val);
-
- /* Invalid type */
- if (type >= AST_EVENT_TOTAL) {
- ast_log(LOG_WARNING, "Someone tried to create an event of invalid "
- "type '%d'!\n", type);
- return NULL;
- }
-
- va_start(ap, type);
- for (ie_type = va_arg(ap, enum ast_event_ie_type);
- ie_type != AST_EVENT_IE_END;
- ie_type = va_arg(ap, enum ast_event_ie_type))
- {
- struct ast_event_ie_val *ie_value = alloca(sizeof(*ie_value));
- int insert = 1;
- memset(ie_value, 0, sizeof(*ie_value));
- ie_value->ie_type = ie_type;
- ie_value->ie_pltype = va_arg(ap, enum ast_event_ie_pltype);
- switch (ie_value->ie_pltype) {
- case AST_EVENT_IE_PLTYPE_UINT:
- ie_value->payload.uint = va_arg(ap, uint32_t);
- break;
- case AST_EVENT_IE_PLTYPE_BITFLAGS:
- ie_value->payload.uint = va_arg(ap, uint32_t);
- break;
- case AST_EVENT_IE_PLTYPE_STR:
- ie_value->payload.str = va_arg(ap, const char *);
- break;
- case AST_EVENT_IE_PLTYPE_RAW:
- {
- void *data = va_arg(ap, void *);
- size_t datalen = va_arg(ap, size_t);
- ie_value->payload.raw = alloca(datalen);
- memcpy(ie_value->payload.raw, data, datalen);
- ie_value->raw_datalen = datalen;
- break;
- }
- case AST_EVENT_IE_PLTYPE_UNKNOWN:
- insert = 0;
- break;
- case AST_EVENT_IE_PLTYPE_EXISTS:
- break;
- }
-
- if (insert) {
- AST_LIST_INSERT_TAIL(&ie_vals, ie_value, entry);
- has_ie = 1;
- }
- }
- va_end(ap);
-
- if (!(event = ast_calloc(1, sizeof(*event)))) {
- return NULL;
- }
-
- event->type = htons(type);
- event->event_len = htons(sizeof(*event));
-
- AST_LIST_TRAVERSE(&ie_vals, ie_val, entry) {
- switch (ie_val->ie_pltype) {
- case AST_EVENT_IE_PLTYPE_STR:
- ast_event_append_ie_str(&event, ie_val->ie_type, ie_val->payload.str);
- break;
- case AST_EVENT_IE_PLTYPE_UINT:
- ast_event_append_ie_uint(&event, ie_val->ie_type, ie_val->payload.uint);
- break;
- case AST_EVENT_IE_PLTYPE_BITFLAGS:
- ast_event_append_ie_bitflags(&event, ie_val->ie_type, ie_val->payload.uint);
- break;
- case AST_EVENT_IE_PLTYPE_RAW:
- ast_event_append_ie_raw(&event, ie_val->ie_type,
- ie_val->payload.raw, ie_val->raw_datalen);
- break;
- case AST_EVENT_IE_PLTYPE_EXISTS:
- ast_log(LOG_WARNING, "PLTYPE_EXISTS unsupported in event_new\n");
- break;
- case AST_EVENT_IE_PLTYPE_UNKNOWN:
- ast_log(LOG_WARNING, "PLTYPE_UNKNOWN passed as an IE type "
- "for a new event\n");
- break;
- }
-
- if (!event) {
- break;
- }
- }
-
- if (has_ie && !ast_event_get_ie_raw(event, AST_EVENT_IE_EID)) {
- /* If the event is originating on this server, add the server's
- * entity ID to the event. */
- ast_event_append_eid(&event);
- }
-
- return event;
-}
-
-int ast_event_append_eid(struct ast_event **event)
-{
- return ast_event_append_ie_raw(event, AST_EVENT_IE_EID,
- &ast_eid_default, sizeof(ast_eid_default));
-}
-
-void ast_event_destroy(struct ast_event *event)
-{
- ast_free(event);
-}
-
-static void ast_event_ref_destroy(void *obj)
-{
- struct ast_event_ref *event_ref = obj;
-
- ast_event_destroy(event_ref->event);
-}
-
-static struct ast_event *ast_event_dup(const struct ast_event *event)
-{
- struct ast_event *dup_event;
- uint16_t event_len;
-
- event_len = ast_event_get_size(event);
-
- if (!(dup_event = ast_calloc(1, event_len))) {
- return NULL;
- }
-
- memcpy(dup_event, event, event_len);
-
- return dup_event;
-}
-
-struct ast_event *ast_event_get_cached(enum ast_event_type type, ...)
-{
- va_list ap;
- enum ast_event_ie_type ie_type;
- struct ast_event *dup_event = NULL;
- struct ast_event_ref *cached_event_ref;
- struct ast_event *cache_arg_event;
- struct ast_event_ref tmp_event_ref = {
- .event = NULL,
- };
- struct ao2_container *container = NULL;
-
- if (type >= AST_EVENT_TOTAL) {
- ast_log(LOG_ERROR, "%u is an invalid type!\n", type);
- return NULL;
- }
-
- if (!(container = ast_event_cache[type].container)) {
- ast_log(LOG_ERROR, "%u is not a cached event type\n", type);
- return NULL;
- }
-
- if (!(cache_arg_event = ast_event_new(type, AST_EVENT_IE_END))) {
- return NULL;
- }
-
- va_start(ap, type);
- for (ie_type = va_arg(ap, enum ast_event_ie_type);
- ie_type != AST_EVENT_IE_END;
- ie_type = va_arg(ap, enum ast_event_ie_type))
- {
- enum ast_event_ie_pltype ie_pltype;
-
- ie_pltype = va_arg(ap, enum ast_event_ie_pltype);
-
- switch (ie_pltype) {
- case AST_EVENT_IE_PLTYPE_UINT:
- ast_event_append_ie_uint(&cache_arg_event, ie_type, va_arg(ap, uint32_t));
- break;
- case AST_EVENT_IE_PLTYPE_BITFLAGS:
- ast_event_append_ie_bitflags(&cache_arg_event, ie_type, va_arg(ap, uint32_t));
- break;
- case AST_EVENT_IE_PLTYPE_STR:
- ast_event_append_ie_str(&cache_arg_event, ie_type, va_arg(ap, const char *));
- break;
- case AST_EVENT_IE_PLTYPE_RAW:
- {
- void *data = va_arg(ap, void *);
- size_t datalen = va_arg(ap, size_t);
- ast_event_append_ie_raw(&cache_arg_event, ie_type, data, datalen);
- }
- case AST_EVENT_IE_PLTYPE_EXISTS:
- ast_log(LOG_WARNING, "PLTYPE_EXISTS not supported by this function\n");
- break;
- case AST_EVENT_IE_PLTYPE_UNKNOWN:
- break;
- }
- }
- va_end(ap);
-
- tmp_event_ref.event = cache_arg_event;
-
- cached_event_ref = ao2_find(container, &tmp_event_ref, OBJ_POINTER);
-
- ast_event_destroy(cache_arg_event);
- cache_arg_event = NULL;
-
- if (cached_event_ref) {
- dup_event = ast_event_dup(cached_event_ref->event);
- ao2_ref(cached_event_ref, -1);
- cached_event_ref = NULL;
- }
-
- return dup_event;
-}
-
-static struct ast_event_ref *alloc_event_ref(void)
-{
- return ao2_alloc(sizeof(struct ast_event_ref), ast_event_ref_destroy);
-}
-
-/*! \brief Duplicate an event and add it to the cache
- * \note This assumes this index in to the cache is locked */
-static int ast_event_dup_and_cache(const struct ast_event *event)
-{
- struct ast_event *dup_event;
- struct ast_event_ref *event_ref;
-
- if (!(dup_event = ast_event_dup(event))) {
- return -1;
- }
-
- if (!(event_ref = alloc_event_ref())) {
- ast_event_destroy(dup_event);
- return -1;
- }
-
- event_ref->event = dup_event;
-
- ao2_link(ast_event_cache[ast_event_get_type(event)].container, event_ref);
-
- ao2_ref(event_ref, -1);
-
- return 0;
-}
-
-int ast_event_queue_and_cache(struct ast_event *event)
-{
- struct ao2_container *container;
- struct ast_event_ref tmp_event_ref = {
- .event = event,
- };
- int res = -1;
-
- if (!(container = ast_event_cache[ast_event_get_type(event)].container)) {
- ast_log(LOG_WARNING, "cache requested for non-cached event type\n");
- goto queue_event;
- }
-
- /* Remove matches from the cache */
- ao2_callback(container, OBJ_POINTER | OBJ_UNLINK | OBJ_MULTIPLE | OBJ_NODATA,
- ast_event_cmp, &tmp_event_ref);
-
- res = ast_event_dup_and_cache(event);
-
-queue_event:
- return ast_event_queue(event) ? -1 : res;
-}
-
-static int handle_event(void *data)
-{
- struct ast_event_ref *event_ref = data;
- struct ast_event_sub *sub;
- const enum ast_event_type event_types[] = {
- ntohs(event_ref->event->type),
- AST_EVENT_ALL
- };
- int i;
-
- for (i = 0; i < ARRAY_LEN(event_types); i++) {
- AST_RWDLLIST_RDLOCK(&ast_event_subs[event_types[i]]);
- AST_RWDLLIST_TRAVERSE(&ast_event_subs[event_types[i]], sub, entry) {
- struct ast_event_ie_val *ie_val;
- AST_LIST_TRAVERSE(&sub->ie_vals, ie_val, entry) {
- if (!match_ie_val(event_ref->event, ie_val, NULL)) {
- break;
- }
- }
- if (ie_val) {
- continue;
- }
- sub->cb(event_ref->event, sub->userdata);
- }
- AST_RWDLLIST_UNLOCK(&ast_event_subs[event_types[i]]);
- }
-
- ao2_ref(event_ref, -1);
-
- return 0;
-}
-
-int ast_event_queue(struct ast_event *event)
-{
- struct ast_event_ref *event_ref;
- uint16_t host_event_type;
-
- host_event_type = ntohs(event->type);
-
- /* Invalid type */
- if (host_event_type >= AST_EVENT_TOTAL) {
- ast_log(LOG_WARNING, "Someone tried to queue an event of invalid "
- "type '%d'!\n", host_event_type);
- return -1;
- }
-
- /* If nobody has subscribed to this event type, throw it away now */
- if (ast_event_check_subscriber(host_event_type, AST_EVENT_IE_END)
- == AST_EVENT_SUB_NONE) {
- ast_event_destroy(event);
- return 0;
- }
-
- if (!(event_ref = alloc_event_ref())) {
- return -1;
- }
-
- event_ref->event = event;
-
- return ast_taskprocessor_push(event_dispatcher, handle_event, event_ref);
-}
-
-static int ast_event_hash_mwi(const void *obj, const int flags)
-{
- const struct ast_event *event = obj;
- const char *mailbox = ast_event_get_ie_str(event, AST_EVENT_IE_MAILBOX);
- const char *context = ast_event_get_ie_str(event, AST_EVENT_IE_CONTEXT);
-
- return ast_str_hash_add(context, ast_str_hash(mailbox));
-}
-
-/*!
- * \internal
- * \brief Hash function for AST_EVENT_DEVICE_STATE
- *
- * \param[in] obj an ast_event
- * \param[in] flags unused
- *
- * \return hash value
- */
-static int ast_event_hash_devstate(const void *obj, const int flags)
-{
- const struct ast_event *event = obj;
-
- return ast_str_hash(ast_event_get_ie_str(event, AST_EVENT_IE_DEVICE));
-}
-
-/*!
- * \internal
- * \brief Hash function for AST_EVENT_DEVICE_STATE_CHANGE
- *
- * \param[in] obj an ast_event
- * \param[in] flags unused
- *
- * \return hash value
- */
-static int ast_event_hash_devstate_change(const void *obj, const int flags)
-{
- const struct ast_event *event = obj;
-
- return ast_str_hash(ast_event_get_ie_str(event, AST_EVENT_IE_DEVICE));
-}
-
-static int ast_event_hash(const void *obj, const int flags)
-{
- const struct ast_event_ref *event_ref;
- const struct ast_event *event;
- ao2_hash_fn *hash_fn;
-
- event_ref = obj;
- event = event_ref->event;
-
- if (!(hash_fn = ast_event_cache[ast_event_get_type(event)].hash_fn)) {
- return 0;
- }
-
- return hash_fn(event, flags);
-}
-
-/*!
- * \internal
- * \brief Compare two events
- *
- * \param[in] obj the first event, as an ast_event_ref
- * \param[in] arg the second event, as an ast_event_ref
- * \param[in] flags unused
- *
- * \pre Both events must be the same type.
- * \pre The event type must be declared as a cached event type in ast_event_cache
- *
- * \details This function takes two events, and determines if they are considered
- * equivalent. The values of information elements specified in the cache arguments
- * for the event type are used to determine if the events are equivalent.
- *
- * \retval 0 No match
- * \retval CMP_MATCH The events are considered equivalent based on the cache arguments
- */
-static int ast_event_cmp(void *obj, void *arg, int flags)
-{
- struct ast_event_ref *event_ref, *event_ref2;
- struct ast_event *event, *event2;
- int res = CMP_MATCH;
- int i;
- enum ast_event_ie_type *cache_args;
-
- event_ref = obj;
- event = event_ref->event;
-
- event_ref2 = arg;
- event2 = event_ref2->event;
-
- cache_args = ast_event_cache[ast_event_get_type(event)].cache_args;
-
- for (i = 0; i < ARRAY_LEN(ast_event_cache[0].cache_args) && cache_args[i]; i++) {
- struct ast_event_ie_val ie_val = {
- .ie_pltype = ast_event_get_ie_pltype(cache_args[i]),
- .ie_type = cache_args[i],
- };
-
- if (!match_ie_val(event, &ie_val, event2)) {
- res = 0;
- break;
- }
- }
-
- return res;
-}
-
-static void dump_raw_ie(struct ast_event_iterator *i, struct ast_cli_args *a)
-{
- char eid_buf[32];
- enum ast_event_ie_type ie_type;
- const char *ie_type_name;
-
- ie_type = ast_event_iterator_get_ie_type(i);
- ie_type_name = ast_event_get_ie_type_name(ie_type);
-
- switch (ie_type) {
- case AST_EVENT_IE_EID:
- ast_eid_to_str(eid_buf, sizeof(eid_buf), ast_event_iterator_get_ie_raw(i));
- ast_cli(a->fd, "%.30s: %s\n", ie_type_name, eid_buf);
- break;
- default:
- ast_cli(a->fd, "%s\n", ie_type_name);
- break;
- }
-}
-
-static int event_dump_cli(void *obj, void *arg, int flags)
-{
- const struct ast_event_ref *event_ref = obj;
- const struct ast_event *event = event_ref->event;
- struct ast_cli_args *a = arg;
- struct ast_event_iterator i;
-
- if (ast_event_iterator_init(&i, event)) {
- ast_cli(a->fd, "Failed to initialize event iterator. :-(\n");
- return 0;
- }
-
- ast_cli(a->fd, "Event: %s\n", ast_event_get_type_name(event));
-
- do {
- enum ast_event_ie_type ie_type;
- enum ast_event_ie_pltype ie_pltype;
- const char *ie_type_name;
-
- ie_type = ast_event_iterator_get_ie_type(&i);
- ie_type_name = ast_event_get_ie_type_name(ie_type);
- ie_pltype = ast_event_get_ie_pltype(ie_type);
-
- switch (ie_pltype) {
- case AST_EVENT_IE_PLTYPE_UNKNOWN:
- case AST_EVENT_IE_PLTYPE_EXISTS:
- ast_cli(a->fd, "%s\n", ie_type_name);
- break;
- case AST_EVENT_IE_PLTYPE_STR:
- ast_cli(a->fd, "%.30s: %s\n", ie_type_name,
- ast_event_iterator_get_ie_str(&i));
- break;
- case AST_EVENT_IE_PLTYPE_UINT:
- ast_cli(a->fd, "%.30s: %u\n", ie_type_name,
- ast_event_iterator_get_ie_uint(&i));
- break;
- case AST_EVENT_IE_PLTYPE_BITFLAGS:
- ast_cli(a->fd, "%.30s: %u\n", ie_type_name,
- ast_event_iterator_get_ie_bitflags(&i));
- break;
- case AST_EVENT_IE_PLTYPE_RAW:
- dump_raw_ie(&i, a);
- break;
- }
- } while (!ast_event_iterator_next(&i));
-
- ast_cli(a->fd, "\n");
-
- return 0;
-}
-
-static char *event_dump_cache(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
-{
- enum ast_event_type event_type;
- enum ast_event_ie_type *cache_args;
- int i;
-
- switch (cmd) {
- case CLI_INIT:
- e->command = "event dump cache";
- e->usage =
- "Usage: event dump cache <event type>\n"
- " Dump all of the cached events for the given event type.\n"
- " This is primarily intended for debugging.\n";
- return NULL;
- case CLI_GENERATE:
- if (a->pos == 3) {
- return ast_cli_complete(a->word, cached_event_types, a->n);
- }
- return NULL;
- case CLI_HANDLER:
- break;
- }
-
- if (a->argc != e->args + 1) {
- return CLI_SHOWUSAGE;
- }
-
- if (ast_event_str_to_event_type(a->argv[e->args], &event_type)) {
- ast_cli(a->fd, "Invalid cached event type: '%s'\n", a->argv[e->args]);
- return CLI_SHOWUSAGE;
- }
-
- if (!ast_event_cache[event_type].container) {
- ast_cli(a->fd, "Event type '%s' has no cache.\n", a->argv[e->args]);
- return CLI_SUCCESS;
- }
-
- ast_cli(a->fd, "Event Type: %s\n", a->argv[e->args]);
- ast_cli(a->fd, "Cache Unique Keys:\n");
- cache_args = ast_event_cache[event_type].cache_args;
- for (i = 0; i < ARRAY_LEN(ast_event_cache[0].cache_args) && cache_args[i]; i++) {
- ast_cli(a->fd, "--> %s\n", ast_event_get_ie_type_name(cache_args[i]));
- }
-
- ast_cli(a->fd, "\n--- Begin Cache Dump ---\n\n");
- ao2_callback(ast_event_cache[event_type].container, OBJ_NODATA, event_dump_cli, a);
- ast_cli(a->fd, "--- End Cache Dump ---\n\n");
-
- return CLI_SUCCESS;
-}
-
-static struct ast_cli_entry event_cli[] = {
- AST_CLI_DEFINE(event_dump_cache, "Dump the internal event cache (for debugging)"),
-};
-
-int ast_event_init(void)
-{
- int i;
-
- for (i = 0; i < AST_EVENT_TOTAL; i++) {
- AST_RWDLLIST_HEAD_INIT(&ast_event_subs[i]);
- }
-
- for (i = 0; i < AST_EVENT_TOTAL; i++) {
- if (!ast_event_cache[i].hash_fn) {
- /* This event type is not cached. */
- continue;
- }
-
- if (!(ast_event_cache[i].container = ao2_container_alloc(NUM_CACHE_BUCKETS,
- ast_event_hash, ast_event_cmp))) {
- return -1;
- }
- }
-
- if (!(event_dispatcher = ast_taskprocessor_get("core_event_dispatcher", 0))) {
- return -1;
- }
-
- ast_cli_register_multiple(event_cli, ARRAY_LEN(event_cli));
-
- return 0;
+ return sizeof(struct ast_event);
}
projects / asterisk/asterisk.git / blobdiff