/*
* Asterisk -- An open source telephony toolkit.
*
- * Copyright (C) 2007, Digium, Inc.
+ * Copyright (C) 2007 - 2008, Digium, Inc.
*
* Russell Bryant <russell@digium.com>
*
* \author Russell Bryant <russell@digium.com>
*/
-#include "asterisk.h"
+/*** MODULEINFO
+ <support_level>core</support_level>
+ ***/
-ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+#include "asterisk.h"
-#include <stdlib.h>
-#include <stdio.h>
+#include "asterisk/_private.h"
#include "asterisk/event.h"
#include "asterisk/linkedlists.h"
+#include "asterisk/dlinkedlists.h"
#include "asterisk/lock.h"
#include "asterisk/utils.h"
+#include "asterisk/unaligned.h"
+#include "asterisk/utils.h"
+#include "asterisk/taskprocessor.h"
+#include "asterisk/astobj2.h"
+#include "asterisk/cli.h"
-/* Only use one thread for now to ensure ordered delivery */
-#define NUM_EVENT_THREADS 1
-
+/*!
+ * \brief An event information element
+ *
+ * \note The format of this structure is important. Since these events may
+ * be sent directly over a network, changing this structure will break
+ * compatibility with older versions. However, at this point, this code
+ * has not made it into a release, so it is still fair game for change.
+ */
struct ast_event_ie {
enum ast_event_ie_type ie_type:16;
/*! Total length of the IE payload */
uint16_t ie_payload_len;
unsigned char ie_payload[0];
-} __attribute__ ((packed));
+} __attribute__((packed));
+
+/*!
+ * \brief The payload for a string information element
+ */
+struct ast_event_ie_str_payload {
+ /*! \brief A hash calculated with ast_str_hash(), to speed up comparisons */
+ uint32_t hash;
+ /*! \brief The actual string, null terminated */
+ char str[1];
+} __attribute__((packed));
/*!
* \brief An event
*
- * \note The format of this structure is important, and can not change, since
- * they are sent directly over the network (via IAX2).
+ * An ast_event consists of an event header (this structure), and zero or
+ * more information elements defined by ast_event_ie.
*
+ * \note The format of this structure is important. Since these events may
+ * be sent directly over a network, changing this structure will break
+ * compatibility with older versions. However, at this point, this code
+ * has not made it into a release, so it is still fair game for change.
*/
struct ast_event {
/*! Event type */
uint16_t event_len:16;
/*! The data payload of the event, made up of information elements */
unsigned char payload[0];
-} __attribute__ ((packed));
+} __attribute__((packed));
-struct ast_event_ref {
- struct ast_event *event;
- AST_LIST_ENTRY(ast_event_ref) entry;
-};
-
-struct ast_event_iterator {
- uint16_t event_len;
- const struct ast_event *event;
- struct ast_event_ie *ie;
-};
-
-/*! \brief data shared between event dispatching threads */
-static struct {
- ast_cond_t cond;
- ast_mutex_t lock;
- AST_LIST_HEAD_NOLOCK(, ast_event_ref) event_q;
-} event_thread = {
- .lock = AST_MUTEX_INIT_VALUE,
-};
struct ast_event_ie_val {
AST_LIST_ENTRY(ast_event_ie_val) entry;
enum ast_event_ie_pltype ie_pltype;
union {
uint32_t uint;
- const char *str;
+ struct {
+ uint32_t hash;
+ const char *str;
+ };
+ void *raw;
} payload;
+ size_t raw_datalen;
};
-/*! \brief Event subscription */
-struct ast_event_sub {
- enum ast_event_type type;
- ast_event_cb_t cb;
- void *userdata;
- uint32_t uniqueid;
- AST_LIST_HEAD_NOLOCK(, ast_event_ie_val) ie_vals;
- AST_RWLIST_ENTRY(ast_event_sub) entry;
+/*!
+ * \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_UNSUB] = "Unsubscription",
+ [AST_EVENT_DEVICE_STATE] = "DeviceState",
+ [AST_EVENT_DEVICE_STATE_CHANGE] = "DeviceStateChange",
+ [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",
};
-static uint32_t sub_uniqueid;
-
-/*! \brief Event subscriptions
- * The event subscribers are indexed by which event they are subscribed to */
-static AST_RWLIST_HEAD(ast_event_sub_list, ast_event_sub) ast_event_subs[AST_EVENT_TOTAL];
-
-/*! \brief Cached events
- * The event cache is indexed on the event type. The purpose of this is
- * for events that express some sort of state. So, when someone first
- * needs to know this state, it can get the last known state from the cache. */
-static AST_RWLIST_HEAD(ast_event_ref_list, ast_event_ref) ast_event_cache[AST_EVENT_TOTAL];
-
-static void ast_event_ie_val_destroy(struct ast_event_ie_val *ie_val)
-{
- if (ie_val->ie_pltype == AST_EVENT_IE_PLTYPE_STR)
- ast_free((void *) ie_val->payload.str);
-
- ast_free(ie_val);
-}
+/*!
+ * \brief IE payload types and names
+ */
+static const struct ie_map {
+ enum ast_event_ie_pltype ie_pltype;
+ const char *name;
+} ie_maps[AST_EVENT_IE_TOTAL] = {
+ [AST_EVENT_IE_NEWMSGS] = { AST_EVENT_IE_PLTYPE_UINT, "NewMessages" },
+ [AST_EVENT_IE_OLDMSGS] = { AST_EVENT_IE_PLTYPE_UINT, "OldMessages" },
+ [AST_EVENT_IE_MAILBOX] = { AST_EVENT_IE_PLTYPE_STR, "Mailbox" },
+ [AST_EVENT_IE_UNIQUEID] = { AST_EVENT_IE_PLTYPE_UINT, "UniqueID" },
+ [AST_EVENT_IE_EVENTTYPE] = { AST_EVENT_IE_PLTYPE_UINT, "EventType" },
+ [AST_EVENT_IE_EXISTS] = { AST_EVENT_IE_PLTYPE_UINT, "Exists" },
+ [AST_EVENT_IE_DEVICE] = { AST_EVENT_IE_PLTYPE_STR, "Device" },
+ [AST_EVENT_IE_STATE] = { AST_EVENT_IE_PLTYPE_UINT, "State" },
+ [AST_EVENT_IE_CONTEXT] = { AST_EVENT_IE_PLTYPE_STR, "Context" },
+ [AST_EVENT_IE_EID] = { AST_EVENT_IE_PLTYPE_RAW, "EntityID" },
+ [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_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_CONTEXT] = { AST_EVENT_IE_PLTYPE_STR, "CELContext" },
+ [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_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_CIDRDNIS] = { AST_EVENT_IE_PLTYPE_STR, "CELCIDrdnis" },
+ [AST_EVENT_IE_CEL_CIDDNID] = { AST_EVENT_IE_PLTYPE_STR, "CELCIDdnid" },
+ [AST_EVENT_IE_CEL_PEER] = { AST_EVENT_IE_PLTYPE_STR, "CELPeer" },
+ [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_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_ACCOUNT_ID] = { AST_EVENT_IE_PLTYPE_STR, "AccountID" },
+ [AST_EVENT_IE_SESSION_ID] = { AST_EVENT_IE_PLTYPE_STR, "SessionID" },
+ [AST_EVENT_IE_SESSION_TV] = { AST_EVENT_IE_PLTYPE_STR, "SessionTV" },
+ [AST_EVENT_IE_ACL_NAME] = { AST_EVENT_IE_PLTYPE_STR, "ACLName" },
+ [AST_EVENT_IE_LOCAL_ADDR] = { AST_EVENT_IE_PLTYPE_STR, "LocalAddress" },
+ [AST_EVENT_IE_REMOTE_ADDR] = { AST_EVENT_IE_PLTYPE_STR, "RemoteAddress" },
+ [AST_EVENT_IE_EVENT_TV] = { AST_EVENT_IE_PLTYPE_STR, "EventTV" },
+ [AST_EVENT_IE_REQUEST_TYPE] = { AST_EVENT_IE_PLTYPE_STR, "RequestType" },
+ [AST_EVENT_IE_REQUEST_PARAMS] = { AST_EVENT_IE_PLTYPE_STR, "RequestParams" },
+ [AST_EVENT_IE_AUTH_METHOD] = { AST_EVENT_IE_PLTYPE_STR, "AuthMethod" },
+ [AST_EVENT_IE_SEVERITY] = { AST_EVENT_IE_PLTYPE_STR, "Severity" },
+ [AST_EVENT_IE_EXPECTED_ADDR] = { AST_EVENT_IE_PLTYPE_STR, "ExpectedAddress" },
+ [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" },
+};
-enum ast_event_subscriber_res ast_event_check_subscriber(enum ast_event_type type, ...)
+const char *ast_event_get_type_name(const struct ast_event *event)
{
- va_list ap;
- enum ast_event_ie_type ie_type;
- enum ast_event_subscriber_res res = AST_EVENT_SUB_NONE;
- struct ast_event_ie_val *ie_val, *sub_ie_val;
- struct ast_event_sub *sub;
- AST_LIST_HEAD_NOLOCK_STATIC(ie_vals, ast_event_ie_val);
+ enum ast_event_type type;
- if (type >= AST_EVENT_TOTAL) {
- ast_log(LOG_ERROR, "%u is an invalid type!\n", type);
- return res;
- }
+ type = ast_event_get_type(event);
- va_start(ap, type);
- for (ie_type = va_arg(ap, enum ast_event_type);
- ie_type != AST_EVENT_IE_END;
- ie_type = va_arg(ap, enum ast_event_type))
- {
- struct ast_event_ie_val *ie_val = alloca(sizeof(*ie_val));
- memset(ie_val, 0, sizeof(*ie_val));
- ie_val->ie_type = ie_type;
- ie_val->ie_pltype = va_arg(ap, enum ast_event_ie_pltype);
- if (ie_val->ie_pltype == AST_EVENT_IE_PLTYPE_UINT)
- ie_val->payload.uint = va_arg(ap, uint32_t);
- else if (ie_val->ie_pltype == AST_EVENT_IE_PLTYPE_STR)
- ie_val->payload.str = ast_strdupa(va_arg(ap, const char *));
- AST_LIST_INSERT_TAIL(&ie_vals, ie_val, entry);
+ if ((unsigned int)type >= ARRAY_LEN(event_names)) {
+ ast_log(LOG_ERROR, "Invalid event type - '%u'\n", type);
+ return "";
}
- va_end(ap);
- AST_RWLIST_RDLOCK(&ast_event_subs[type]);
- AST_RWLIST_TRAVERSE(&ast_event_subs[type], sub, entry) {
- AST_LIST_TRAVERSE(&ie_vals, ie_val, entry) {
- AST_LIST_TRAVERSE(&sub->ie_vals, sub_ie_val, entry) {
- if (sub_ie_val->ie_type == ie_val->ie_type)
- break;
- }
- if (!sub_ie_val) {
- if (ie_val->ie_pltype == AST_EVENT_IE_PLTYPE_EXISTS)
- break;
- continue;
- }
- /* The subscriber doesn't actually care what the value is */
- if (sub_ie_val->ie_pltype == AST_EVENT_IE_PLTYPE_EXISTS)
- continue;
- if (ie_val->ie_pltype == AST_EVENT_IE_PLTYPE_UINT &&
- ie_val->payload.uint != sub_ie_val->payload.uint)
- break;
- if (ie_val->ie_pltype == AST_EVENT_IE_PLTYPE_STR &&
- strcmp(ie_val->payload.str, sub_ie_val->payload.str))
- break;
- }
- if (!ie_val)
- break;
- }
- AST_RWLIST_UNLOCK(&ast_event_subs[type]);
-
- if (sub) /* All parameters were matched */
- return AST_EVENT_SUB_EXISTS;
-
- AST_RWLIST_RDLOCK(&ast_event_subs[AST_EVENT_ALL]);
- if (!AST_LIST_EMPTY(&ast_event_subs[AST_EVENT_ALL]))
- res = AST_EVENT_SUB_EXISTS;
- AST_RWLIST_UNLOCK(&ast_event_subs[AST_EVENT_ALL]);
-
- return res;
+ return event_names[type];
}
-/*! \brief Send AST_EVENT_SUB events to this subscriber of ... subscriber events */
-void ast_event_report_subs(const struct ast_event_sub *event_sub)
+const char *ast_event_get_ie_type_name(enum ast_event_ie_type ie_type)
{
- 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 (ie_type <= 0 || ie_type >= ARRAY_LEN(ie_maps)) {
+ ast_log(LOG_ERROR, "Invalid IE type - '%d'\n", ie_type);
+ return "";
}
- if (event_type == -1)
- return;
-
- AST_RWLIST_RDLOCK(&ast_event_subs[event_type]);
- AST_RWLIST_TRAVERSE(&ast_event_subs[event_type], sub, entry) {
- if (event_sub == sub)
- continue;
-
- 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_END);
-
- AST_LIST_TRAVERSE(&sub->ie_vals, ie_val, entry) {
- switch (ie_val->ie_pltype) {
- 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_STR:
- ast_event_append_ie_str(&event, ie_val->ie_type, ie_val->payload.str);
- break;
- }
- if (!event)
- break;
- }
-
- if (!event)
- continue;
-
- event_sub->cb(event, event_sub->userdata);
-
- ast_event_destroy(event);
- }
- AST_RWLIST_UNLOCK(&ast_event_subs[event_type]);
+ return ie_maps[ie_type].name;
}
-struct ast_event_sub *ast_event_subscribe(enum ast_event_type type, ast_event_cb_t cb,
- void *userdata, ...)
+enum ast_event_ie_pltype ast_event_get_ie_pltype(enum ast_event_ie_type ie_type)
{
- va_list ap;
- enum ast_event_ie_type ie_type;
- struct ast_event_sub *sub;
- struct ast_event *event;
-
- if (type >= AST_EVENT_TOTAL) {
- ast_log(LOG_ERROR, "%u is an invalid type!\n", type);
- return NULL;
+ if (ie_type <= 0 || ie_type >= ARRAY_LEN(ie_maps)) {
+ ast_log(LOG_ERROR, "Invalid IE type - '%d'\n", ie_type);
+ return AST_EVENT_IE_PLTYPE_UNKNOWN;
}
- if (!(sub = ast_calloc(1, sizeof(*sub))))
- return NULL;
-
- va_start(ap, userdata);
- for (ie_type = va_arg(ap, enum ast_event_type);
- ie_type != AST_EVENT_IE_END;
- ie_type = va_arg(ap, enum ast_event_type))
- {
- struct ast_event_ie_val *ie_val;
- if (!(ie_val = ast_calloc(1, sizeof(*ie_val))))
- continue;
- ie_val->ie_type = ie_type;
- ie_val->ie_pltype = va_arg(ap, enum ast_event_ie_pltype);
- if (ie_val->ie_pltype == AST_EVENT_IE_PLTYPE_UINT)
- ie_val->payload.uint = va_arg(ap, uint32_t);
- else if (ie_val->ie_pltype == AST_EVENT_IE_PLTYPE_STR) {
- if (!(ie_val->payload.str = ast_strdup(va_arg(ap, const char *)))) {
- ast_free(ie_val);
- continue;
- }
- }
- AST_LIST_INSERT_TAIL(&sub->ie_vals, ie_val, entry);
- }
- va_end(ap);
-
- sub->type = type;
- sub->cb = cb;
- sub->userdata = userdata;
- sub->uniqueid = ast_atomic_fetchadd_int((int *) &sub_uniqueid, 1);
-
- if (ast_event_check_subscriber(AST_EVENT_SUB,
- AST_EVENT_IE_EVENTTYPE, AST_EVENT_IE_PLTYPE_UINT, type,
- AST_EVENT_IE_END) != AST_EVENT_SUB_NONE) {
- struct ast_event_ie_val *ie_val;
-
- 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_END);
-
- AST_LIST_TRAVERSE(&sub->ie_vals, ie_val, entry) {
- switch (ie_val->ie_pltype) {
- 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_STR:
- ast_event_append_ie_str(&event, ie_val->ie_type, ie_val->payload.str);
- break;
- }
- if (!event)
- break;
- }
-
- if (event)
- ast_event_queue(event);
- }
-
- AST_RWLIST_WRLOCK(&ast_event_subs[type]);
- AST_RWLIST_INSERT_TAIL(&ast_event_subs[type], sub, entry);
- AST_RWLIST_UNLOCK(&ast_event_subs[type]);
-
- return sub;
+ return ie_maps[ie_type].ie_pltype;
}
-static void ast_event_sub_destroy(struct ast_event_sub *sub)
+size_t ast_event_get_size(const struct ast_event *event)
{
- struct ast_event_ie_val *ie_val;
+ size_t res;
- while ((ie_val = AST_LIST_REMOVE_HEAD(&sub->ie_vals, entry)))
- ast_event_ie_val_destroy(ie_val);
+ res = ntohs(event->event_len);
- ast_free(sub);
+ return res;
}
-void ast_event_unsubscribe(struct ast_event_sub *sub)
+/*! \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)
{
- struct ast_event *event;
+ int res = 0;
- AST_RWLIST_WRLOCK(&ast_event_subs[sub->type]);
- AST_LIST_REMOVE(&ast_event_subs[sub->type], sub, entry);
- AST_RWLIST_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_END);
-
- if (event)
- ast_event_queue(event);
+ 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;
}
- ast_event_sub_destroy(sub);
-}
-
-void ast_event_iterator_init(struct ast_event_iterator *iterator, const struct ast_event *event)
-{
- iterator->event_len = ntohs(event->event_len);
- iterator->event = event;
- iterator->ie = ((void *) event) + sizeof(*event);
- return;
+ return res;
}
int ast_event_iterator_next(struct ast_event_iterator *iterator)
{
- iterator->ie = ((void *) iterator->ie) + sizeof(*iterator->ie) + ntohs(iterator->ie->ie_payload_len);
- return ((iterator->event_len > (((void *) iterator->ie) - ((void *) iterator->event))) ? -1 : 0);
+ 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 iterator->ie->ie_type;
+ return ntohs(iterator->ie->ie_type);
}
-uint32_t ast_event_iteragor_get_ie_uint(struct ast_event_iterator *iterator)
+uint32_t ast_event_iterator_get_ie_uint(struct ast_event_iterator *iterator)
{
- return ntohl(*iterator->ie->ie_payload);
+ return ntohl(get_unaligned_uint32(iterator->ie->ie_payload));
}
const char *ast_event_iterator_get_ie_str(struct ast_event_iterator *iterator)
{
- return (const char*)iterator->ie->ie_payload;
+ 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)
+static void *event_iterator_get_ie_raw(struct ast_event_iterator *iterator)
{
return iterator->ie->ie_payload;
}
ie_val = ast_event_get_ie_raw(event, ie_type);
- return ie_val ? ntohl(*ie_val) : 0;
+ 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)
{
- return ast_event_get_ie_raw(event, 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 (ast_event_iterator_init(&iterator, event); !ast_event_iterator_next(&iterator); ) {
- if (ast_event_iterator_get_ie_type(&iterator) == ie_type)
- return ast_event_iterator_get_ie_raw(&iterator);
+ 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);
+ }
}
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);
+ }
+ }
+
+ return 0;
+}
+
+
int ast_event_append_ie_str(struct ast_event **event, enum ast_event_ie_type ie_type,
const char *str)
{
- return ast_event_append_ie_raw(event, ie_type, str, strlen(str) + 1);
+ 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,
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;
- if (!(*event = ast_realloc(*event, event_len + extra_len)))
+ old_event = *event;
+ *event = ast_realloc(*event, event_len + extra_len);
+ if (!*event) {
+ ast_free(old_event);
return -1;
+ }
- ie = ((void *) *event) + event_len;
+ 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);
{
va_list ap;
struct ast_event *event;
- enum ast_event_type ie_type;
+ enum ast_event_ie_type ie_type;
struct ast_event_ie_val *ie_val;
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);
+ "type '%u'!\n", type);
return NULL;
}
va_start(ap, type);
- for (ie_type = va_arg(ap, enum ast_event_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_type))
+ ie_type = va_arg(ap, enum ast_event_ie_type))
{
- struct ast_event_ie_val *ie_val = alloca(sizeof(*ie_val));
- memset(ie_val, 0, sizeof(*ie_val));
- ie_val->ie_type = ie_type;
- ie_val->ie_pltype = va_arg(ap, enum ast_event_ie_pltype);
- if (ie_val->ie_pltype == AST_EVENT_IE_PLTYPE_UINT)
- ie_val->payload.uint = va_arg(ap, uint32_t);
- else if (ie_val->ie_pltype == AST_EVENT_IE_PLTYPE_STR)
- ie_val->payload.str = ast_strdupa(va_arg(ap, const char *));
- AST_LIST_INSERT_TAIL(&ie_vals, ie_val, entry);
+ 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 = ast_alloca(datalen);
+ memcpy(ie_value->payload.raw, data, datalen);
+ ie_value->raw_datalen = datalen;
+ insert = 1;
+ break;
+ }
+ case AST_EVENT_IE_PLTYPE_UNKNOWN:
+ 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);
- if (!(event = ast_calloc(1, sizeof(*event))))
+ 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) {
- if (ie_val->ie_pltype == AST_EVENT_IE_PLTYPE_STR)
+ 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);
- else if (ie_val->ie_pltype == AST_EVENT_IE_PLTYPE_UINT)
+ break;
+ case AST_EVENT_IE_PLTYPE_UINT:
ast_event_append_ie_uint(&event, ie_val->ie_type, ie_val->payload.uint);
-
- if (!event)
break;
- }
-
- return event;
-}
-
-void ast_event_destroy(struct ast_event *event)
-{
- ast_free(event);
-}
-
-static void ast_event_ref_destroy(struct ast_event_ref *event_ref)
-{
- ast_event_destroy(event_ref->event);
- ast_free(event_ref);
-}
-
-static struct ast_event *ast_event_dup(const struct ast_event *event)
-{
- struct ast_event *dup_event;
- uint16_t event_len;
-
- event_len = ntohs(event->event_len);
-
- 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 *event_ref;
- struct cache_arg {
- AST_LIST_ENTRY(cache_arg) entry;
- enum ast_event_ie_type ie_type;
- enum ast_event_ie_pltype ie_pltype;
- union {
- uint32_t uint;
- const char *str;
- } payload;
- } *cache_arg;
- AST_LIST_HEAD_NOLOCK_STATIC(cache_args, cache_arg);
-
- if (type >= AST_EVENT_TOTAL) {
- ast_log(LOG_ERROR, "%u is an invalid type!\n", type);
- return NULL;
- }
-
- va_start(ap, type);
- for (ie_type = va_arg(ap, enum ast_event_type);
- ie_type != AST_EVENT_IE_END;
- ie_type = va_arg(ap, enum ast_event_type))
- {
- cache_arg = alloca(sizeof(*cache_arg));
- memset(cache_arg, 0, sizeof(*cache_arg));
- cache_arg->ie_type = ie_type;
- cache_arg->ie_pltype = va_arg(ap, enum ast_event_ie_pltype);
- if (cache_arg->ie_pltype == AST_EVENT_IE_PLTYPE_UINT)
- cache_arg->payload.uint = va_arg(ap, uint32_t);
- else if (cache_arg->ie_pltype == AST_EVENT_IE_PLTYPE_STR)
- cache_arg->payload.str = ast_strdupa(va_arg(ap, const char *));
- AST_LIST_INSERT_TAIL(&cache_args, cache_arg, entry);
- }
- va_end(ap);
-
- if (AST_LIST_EMPTY(&cache_args)) {
- ast_log(LOG_ERROR, "Events can not be retrieved from the cache without "
- "specifying at least one IE type!\n");
- return NULL;
- }
-
- AST_RWLIST_RDLOCK(&ast_event_cache[type]);
- AST_RWLIST_TRAVERSE_SAFE_BEGIN(&ast_event_cache[type], event_ref, entry) {
- AST_LIST_TRAVERSE(&cache_args, cache_arg, entry) {
- if ( ! ( (cache_arg->ie_pltype == AST_EVENT_IE_PLTYPE_UINT &&
- (cache_arg->payload.uint ==
- ast_event_get_ie_uint(event_ref->event, cache_arg->ie_type))) ||
-
- (cache_arg->ie_pltype == AST_EVENT_IE_PLTYPE_STR &&
- (!strcmp(cache_arg->payload.str,
- ast_event_get_ie_str(event_ref->event, cache_arg->ie_type)))) ||
-
- (cache_arg->ie_pltype == AST_EVENT_IE_PLTYPE_EXISTS &&
- ast_event_get_ie_raw(event_ref->event, cache_arg->ie_type)) ) )
- {
- break;
- }
- }
- if (!cache_arg) {
- /* All parameters were matched on this cache entry, so return it */
- dup_event = ast_event_dup(event_ref->event);
+ 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;
}
- }
- AST_RWLIST_TRAVERSE_SAFE_END
- AST_RWLIST_UNLOCK(&ast_event_cache[type]);
-
- return dup_event;
-}
-
-/*! \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 = ast_calloc(1, sizeof(*event_ref))))
- return -1;
-
- event_ref->event = dup_event;
-
- AST_LIST_INSERT_TAIL(&ast_event_cache[ntohs(event->type)], event_ref, entry);
-
- return 0;
-}
-
-int ast_event_queue_and_cache(struct ast_event *event, ...)
-{
- va_list ap;
- enum ast_event_type ie_type;
- uint16_t host_event_type;
- struct ast_event_ref *event_ref;
- int res;
- struct cache_arg {
- AST_LIST_ENTRY(cache_arg) entry;
- enum ast_event_ie_type ie_type;
- enum ast_event_ie_pltype ie_pltype;
- } *cache_arg;
- AST_LIST_HEAD_NOLOCK_STATIC(cache_args, cache_arg);
-
- 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;
+ /* realloc inside one of the append functions failed */
+ if (!event) {
+ return NULL;
+ }
}
- va_start(ap, event);
- for (ie_type = va_arg(ap, enum ast_event_type);
- ie_type != AST_EVENT_IE_END;
- ie_type = va_arg(ap, enum ast_event_type))
- {
- cache_arg = alloca(sizeof(*cache_arg));
- memset(cache_arg, 0, sizeof(*cache_arg));
- cache_arg->ie_type = ie_type;
- cache_arg->ie_pltype = va_arg(ap, enum ast_event_ie_pltype);
- AST_LIST_INSERT_TAIL(&cache_args, cache_arg, entry);
+ 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);
}
- va_end(ap);
- if (AST_LIST_EMPTY(&cache_args)) {
- ast_log(LOG_ERROR, "Events can not be cached without specifying at "
- "least one IE type!\n");
- return ast_event_queue(event);
- }
-
- AST_RWLIST_WRLOCK(&ast_event_cache[host_event_type]);
- AST_RWLIST_TRAVERSE_SAFE_BEGIN(&ast_event_cache[host_event_type], event_ref, entry) {
- AST_LIST_TRAVERSE(&cache_args, cache_arg, entry) {
- if ( ! ( (cache_arg->ie_pltype == AST_EVENT_IE_PLTYPE_UINT &&
- (ast_event_get_ie_uint(event, cache_arg->ie_type) ==
- ast_event_get_ie_uint(event_ref->event, cache_arg->ie_type))) ||
-
- (cache_arg->ie_pltype == AST_EVENT_IE_PLTYPE_STR &&
- (!strcmp(ast_event_get_ie_str(event, cache_arg->ie_type),
- ast_event_get_ie_str(event_ref->event, cache_arg->ie_type)))) ||
-
- (cache_arg->ie_pltype == AST_EVENT_IE_PLTYPE_EXISTS &&
- ast_event_get_ie_raw(event_ref->event, cache_arg->ie_type)) ) )
- {
- break;
- }
- }
- if (!cache_arg) {
- /* All parameters were matched on this cache entry, so remove it */
- AST_LIST_REMOVE_CURRENT(&ast_event_cache[host_event_type], entry);
- ast_event_ref_destroy(event_ref);
- }
- }
- AST_RWLIST_TRAVERSE_SAFE_END
- res = ast_event_dup_and_cache(event);
- AST_RWLIST_UNLOCK(&ast_event_cache[host_event_type]);
-
- return (ast_event_queue(event) || res) ? -1 : 0;
+ return event;
}
-int ast_event_queue(struct ast_event *event)
+int ast_event_append_eid(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 = ast_calloc(1, sizeof(*event_ref))))
- return -1;
-
- event_ref->event = event;
-
- ast_mutex_lock(&event_thread.lock);
- AST_LIST_INSERT_TAIL(&event_thread.event_q, event_ref, entry);
- ast_cond_signal(&event_thread.cond);
- ast_mutex_unlock(&event_thread.lock);
-
- return 0;
+ return ast_event_append_ie_raw(event, AST_EVENT_IE_EID,
+ &ast_eid_default, sizeof(ast_eid_default));
}
-static void *ast_event_dispatcher(void *unused)
+void ast_event_destroy(struct ast_event *event)
{
- for (;;) {
- struct ast_event_ref *event_ref;
- struct ast_event_sub *sub;
- uint16_t host_event_type;
-
- ast_mutex_lock(&event_thread.lock);
- while (!(event_ref = AST_LIST_REMOVE_HEAD(&event_thread.event_q, entry)))
- ast_cond_wait(&event_thread.cond, &event_thread.lock);
- ast_mutex_unlock(&event_thread.lock);
-
- host_event_type = ntohs(event_ref->event->type);
-
- /* Subscribers to this specific event first */
- AST_RWLIST_RDLOCK(&ast_event_subs[host_event_type]);
- AST_RWLIST_TRAVERSE(&ast_event_subs[host_event_type], sub, entry) {
- struct ast_event_ie_val *ie_val;
- AST_LIST_TRAVERSE(&sub->ie_vals, ie_val, entry) {
- if (ie_val->ie_pltype == AST_EVENT_IE_PLTYPE_EXISTS &&
- ast_event_get_ie_raw(event_ref->event, ie_val->ie_type)) {
- continue;
- } else if (ie_val->ie_pltype == AST_EVENT_IE_PLTYPE_UINT &&
- ast_event_get_ie_uint(event_ref->event, ie_val->ie_type)
- == ie_val->payload.uint) {
- continue;
- } else if (ie_val->ie_pltype == AST_EVENT_IE_PLTYPE_STR &&
- !strcmp(ast_event_get_ie_str(event_ref->event, ie_val->ie_type),
- ie_val->payload.str)) {
- continue;
- }
- break;
- }
- if (ie_val)
- continue;
- sub->cb(event_ref->event, sub->userdata);
- }
- AST_RWLIST_UNLOCK(&ast_event_subs[host_event_type]);
-
- /* Now to subscribers to all event types */
- AST_RWLIST_RDLOCK(&ast_event_subs[AST_EVENT_ALL]);
- AST_RWLIST_TRAVERSE(&ast_event_subs[AST_EVENT_ALL], sub, entry)
- sub->cb(event_ref->event, sub->userdata);
- AST_RWLIST_UNLOCK(&ast_event_subs[AST_EVENT_ALL]);
-
- ast_event_ref_destroy(event_ref);
- }
-
- return NULL;
+ ast_free(event);
}
-void ast_event_init(void)
+size_t ast_event_minimum_length(void)
{
- int i;
-
- for (i = 0; i < AST_EVENT_TOTAL; i++)
- AST_RWLIST_HEAD_INIT(&ast_event_subs[i]);
-
- for (i = 0; i < AST_EVENT_TOTAL; i++)
- AST_RWLIST_HEAD_INIT(&ast_event_cache[i]);
-
- ast_cond_init(&event_thread.cond, NULL);
-
- for (i = 0; i < NUM_EVENT_THREADS; i++) {
- pthread_t dont_care;
- ast_pthread_create_background(&dont_care, NULL, ast_event_dispatcher, NULL);
- }
+ return sizeof(struct ast_event);
}
projects / asterisk/asterisk.git / blobdiff