mirror of https://github.com/asterisk/asterisk
git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/10-digiumphones@361199 65c4cc65-6c06-0410-ace0-fbb531ad65f310-digiumphones
Mark Michelson
14 years ago
parent
c71f0ac4b1
commit
c343f0be25
@ -0,0 +1,191 @@
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2011-2012, Digium, Inc.
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*
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* David Vossel <dvosse@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Encode and Decode custom control frame payload types.
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*
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* \author David Vossel <dvossel@digium.com>
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/_private.h"
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#include "asterisk/custom_control_frame.h"
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struct ast_custom_payload {
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enum ast_custom_payload_type type;
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/*! length of data portion only */
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size_t datalen;
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char *data;
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};
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enum ast_custom_payload_type ast_custom_payload_type(struct ast_custom_payload *type)
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{
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return type->type;
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}
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size_t ast_custom_payload_len(struct ast_custom_payload *type)
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{
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return type->datalen + sizeof(struct ast_custom_payload);
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}
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struct custom_sipinfo {
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size_t num_headers;
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int content_present;
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int useragent_filter_present;
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char *data;
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};
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struct ast_custom_payload *ast_custom_payload_sipinfo_encode(struct ast_variable *headers,
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const char *content_type,
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const char *content,
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const char *useragent_filter)
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{
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int num_headers = 0;
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int content_present = 0;
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int content_strlen = 0;
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int content_type_strlen = 0;
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int useragent_filter_present = 0;
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int useragent_filter_len = 0;
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size_t datalen = 0;
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struct ast_variable *var;
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struct ast_custom_payload *payload;
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struct custom_sipinfo *sipinfo;
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char *data;
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datalen += sizeof(struct custom_sipinfo);
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for (var = headers; var; var = var->next) {
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datalen += strlen(var->name) + 1;
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datalen += strlen(var->value) + 1;
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num_headers++;
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}
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if (!ast_strlen_zero(content_type) && !ast_strlen_zero(content)) {
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content_type_strlen = strlen(content_type);
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content_strlen = strlen(content);
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datalen += content_type_strlen + 1;
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datalen += content_strlen + 1;
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content_present = 1;
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}
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if (!ast_strlen_zero(useragent_filter)) {
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useragent_filter_len = strlen(useragent_filter);
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datalen += useragent_filter_len + 1;
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useragent_filter_present = 1;
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}
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if (!(payload = ast_calloc(1, datalen + sizeof(*payload)))) {
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return NULL;
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}
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payload->type = AST_CUSTOM_SIP_INFO;
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payload->datalen = datalen;
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payload->data = (char *) payload + sizeof(struct ast_custom_payload);
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sipinfo = (struct custom_sipinfo *) payload->data;
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sipinfo->num_headers = num_headers;
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sipinfo->content_present = content_present;
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sipinfo->useragent_filter_present = useragent_filter_present;
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sipinfo->data = (char *) sipinfo + sizeof(struct custom_sipinfo);
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/* store string buffers in payload data
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* headers are put in first, followed by content type and then content body. */
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data = sipinfo->data;
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for (var = headers; var; var = var->next) {
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int namelen = strlen(var->name);
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int vallen = strlen(var->value);
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/*! we already know we have enough room for each of these */
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ast_copy_string(data, var->name, namelen+1);
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data += namelen + 1; /* skip over the '\0' character */
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ast_copy_string(data, var->value, vallen+1);
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data += vallen + 1; /* skip over the '\0' character */
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}
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if (content_present) {
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ast_copy_string(data, content_type, content_type_strlen+1);
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data += content_type_strlen + 1;
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ast_copy_string(data, content, content_strlen+1);
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data += content_strlen + 1;
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}
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if (useragent_filter_present) {
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ast_copy_string(data, useragent_filter, useragent_filter_len+1);
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}
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return payload;
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}
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int ast_custom_payload_sipinfo_decode(struct ast_custom_payload *pl,
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struct ast_variable **headers,
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char **content_type,
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char **content,
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char **useragent_filter)
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{
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struct custom_sipinfo *sipinfo;
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struct ast_variable *cur = NULL;
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char *data;
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int i;
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*headers = NULL;
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*content_type = NULL;
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*content = NULL;
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*useragent_filter = NULL;
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if (pl->type != AST_CUSTOM_SIP_INFO) {
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return -1;
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}
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sipinfo = (struct custom_sipinfo *) pl->data;
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data = sipinfo->data;
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for (i = 0; i < sipinfo->num_headers; i++) {
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const char *name;
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const char *value;
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name = data;
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data += strlen(name) + 1;
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value = data;
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data += strlen(value) + 1;
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if (*headers) {
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if ((cur->next = ast_variable_new(name, value, ""))) {
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cur = cur->next;
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}
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} else {
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*headers = cur = ast_variable_new(name, value, "");
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}
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}
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if (sipinfo->content_present) {
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*content_type = ast_strdup(data);
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data += strlen(data) + 1;
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*content = ast_strdup(data);
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data += strlen(data) + 1;
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}
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if (sipinfo->useragent_filter_present) {
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*useragent_filter = ast_strdup(data);
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}
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return 0;
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}
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@ -0,0 +1,285 @@
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2011-2012, Digium, Inc.
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*
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* David Vossel <dvossel@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Presence state management
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/_private.h"
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#include "asterisk/utils.h"
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#include "asterisk/lock.h"
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#include "asterisk/linkedlists.h"
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#include "asterisk/presencestate.h"
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#include "asterisk/pbx.h"
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#include "asterisk/app.h"
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#include "asterisk/event.h"
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/*! \brief Device state strings for printing */
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static const struct {
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const char *string;
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enum ast_presence_state state;
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} state2string[] = {
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{ "not_set", AST_PRESENCE_NOT_SET},
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{ "unavailable", AST_PRESENCE_UNAVAILABLE },
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{ "available", AST_PRESENCE_AVAILABLE},
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{ "away", AST_PRESENCE_AWAY},
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{ "xa", AST_PRESENCE_XA},
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{ "chat", AST_PRESENCE_CHAT},
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{ "dnd", AST_PRESENCE_DND},
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};
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/*! \brief Flag for the queue */
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static ast_cond_t change_pending;
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struct state_change {
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AST_LIST_ENTRY(state_change) list;
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char provider[1];
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};
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/*! \brief A presence state provider */
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struct presence_state_provider {
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char label[40];
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ast_presence_state_prov_cb_type callback;
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AST_RWLIST_ENTRY(presence_state_provider) list;
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};
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/*! \brief A list of providers */
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static AST_RWLIST_HEAD_STATIC(presence_state_providers, presence_state_provider);
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/*! \brief The state change queue. State changes are queued
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for processing by a separate thread */
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static AST_LIST_HEAD_STATIC(state_changes, state_change);
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/*! \brief The presence state change notification thread */
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static pthread_t change_thread = AST_PTHREADT_NULL;
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const char *ast_presence_state2str(enum ast_presence_state state)
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{
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int i;
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for (i = 0; i < ARRAY_LEN(state2string); i++) {
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if (state == state2string[i].state) {
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return state2string[i].string;
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}
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}
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return "";
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}
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enum ast_presence_state ast_presence_state_val(const char *val)
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{
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int i;
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for (i = 0; i < ARRAY_LEN(state2string); i++) {
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if (!strcasecmp(val, state2string[i].string)) {
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return state2string[i].state;
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}
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}
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return -1;
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}
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static enum ast_presence_state presence_state_cached(const char *presence_provider, char **subtype, char **message)
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{
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enum ast_presence_state res = -1;
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struct ast_event *event;
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const char *_subtype;
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const char *_message;
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event = ast_event_get_cached(AST_EVENT_PRESENCE_STATE,
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AST_EVENT_IE_PRESENCE_PROVIDER, AST_EVENT_IE_PLTYPE_STR, presence_provider,
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AST_EVENT_IE_END);
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if (!event) {
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return res;
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}
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res = ast_event_get_ie_uint(event, AST_EVENT_IE_PRESENCE_STATE);
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_subtype = ast_event_get_ie_str(event, AST_EVENT_IE_PRESENCE_SUBTYPE);
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_message = ast_event_get_ie_str(event, AST_EVENT_IE_PRESENCE_MESSAGE);
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*subtype = !ast_strlen_zero(_subtype) ? ast_strdup(_subtype) : NULL;
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*message = !ast_strlen_zero(_message) ? ast_strdup(_message) : NULL;
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ast_event_destroy(event);
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return res;
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}
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static enum ast_presence_state ast_presence_state_helper(const char *presence_provider, char **subtype, char **message, int check_cache)
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{
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struct presence_state_provider *provider;
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char *address;
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char *label = ast_strdupa(presence_provider);
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int res = -1;
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if (check_cache) {
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res = presence_state_cached(presence_provider, subtype, message);
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if (res > 0) {
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return res;
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}
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}
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if ((address = strchr(label, ':'))) {
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*address = '\0';
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address++;
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} else {
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ast_log(LOG_WARNING, "No label found for presence state provider: %s\n", presence_provider);
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return res;
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}
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AST_RWLIST_RDLOCK(&presence_state_providers);
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AST_RWLIST_TRAVERSE(&presence_state_providers, provider, list) {
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ast_debug(5, "Checking provider %s with %s\n", provider->label, label);
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if (!strcasecmp(provider->label, label)) {
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res = provider->callback(address, subtype, message);
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break;
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}
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}
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AST_RWLIST_UNLOCK(&presence_state_providers);
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return res;
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}
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enum ast_presence_state ast_presence_state(const char *presence_provider, char **subtype, char **message)
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{
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return ast_presence_state_helper(presence_provider, subtype, message, 1);
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}
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int ast_presence_state_prov_add(const char *label, ast_presence_state_prov_cb_type callback)
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{
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struct presence_state_provider *provider;
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if (!callback || !(provider = ast_calloc(1, sizeof(*provider)))) {
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return -1;
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}
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provider->callback = callback;
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ast_copy_string(provider->label, label, sizeof(provider->label));
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AST_RWLIST_WRLOCK(&presence_state_providers);
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AST_RWLIST_INSERT_HEAD(&presence_state_providers, provider, list);
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AST_RWLIST_UNLOCK(&presence_state_providers);
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return 0;
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}
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int ast_presence_state_prov_del(const char *label)
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{
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struct presence_state_provider *provider;
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int res = -1;
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AST_RWLIST_WRLOCK(&presence_state_providers);
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AST_RWLIST_TRAVERSE_SAFE_BEGIN(&presence_state_providers, provider, list) {
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if (!strcasecmp(provider->label, label)) {
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AST_RWLIST_REMOVE_CURRENT(list);
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ast_free(provider);
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res = 0;
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break;
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}
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}
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AST_RWLIST_TRAVERSE_SAFE_END;
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AST_RWLIST_UNLOCK(&presence_state_providers);
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return res;
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}
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static void do_presence_state_change(const char *provider)
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{
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struct ast_event *event;
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enum ast_event_type event_type;
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char *subtype = NULL;
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char *message = NULL;
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int state;
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state = ast_presence_state_helper(provider, &subtype, &message, 0);
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if (state < 0) {
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return;
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}
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event_type = AST_EVENT_PRESENCE_STATE;
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if (!(event = ast_event_new(event_type,
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AST_EVENT_IE_PRESENCE_PROVIDER, AST_EVENT_IE_PLTYPE_STR, provider,
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AST_EVENT_IE_PRESENCE_STATE, AST_EVENT_IE_PLTYPE_UINT, state,
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AST_EVENT_IE_PRESENCE_SUBTYPE, AST_EVENT_IE_PLTYPE_STR, S_OR(subtype, ""),
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AST_EVENT_IE_PRESENCE_MESSAGE, AST_EVENT_IE_PLTYPE_STR, S_OR(message, ""),
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AST_EVENT_IE_END))) {
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return;
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}
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ast_event_queue_and_cache(event);
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ast_free(subtype);
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ast_free(message);
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}
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int ast_presence_state_changed(const char *presence_provider)
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{
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struct state_change *change;
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if ((change_thread == AST_PTHREADT_NULL) ||
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!(change = ast_calloc(1, sizeof(*change) + strlen(presence_provider)))) {
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do_presence_state_change(presence_provider);
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} else {
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strcpy(change->provider, presence_provider);
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AST_LIST_LOCK(&state_changes);
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AST_LIST_INSERT_TAIL(&state_changes, change, list);
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ast_cond_signal(&change_pending);
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AST_LIST_UNLOCK(&state_changes);
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}
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return 0;
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}
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/*! \brief Go through the presence state change queue and update changes in the presence state thread */
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static void *do_presence_changes(void *data)
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{
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struct state_change *next, *current;
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for (;;) {
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/* This basically pops off any state change entries, resets the list back to NULL, unlocks, and processes each state change */
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AST_LIST_LOCK(&state_changes);
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if (AST_LIST_EMPTY(&state_changes))
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ast_cond_wait(&change_pending, &state_changes.lock);
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next = AST_LIST_FIRST(&state_changes);
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AST_LIST_HEAD_INIT_NOLOCK(&state_changes);
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AST_LIST_UNLOCK(&state_changes);
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/* Process each state change */
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while ((current = next)) {
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next = AST_LIST_NEXT(current, list);
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do_presence_state_change(current->provider);
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ast_free(current);
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}
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}
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||||
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return NULL;
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}
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int ast_presence_state_engine_init(void)
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{
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ast_cond_init(&change_pending, NULL);
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if (ast_pthread_create_background(&change_thread, NULL, do_presence_changes, NULL) < 0) {
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ast_log(LOG_ERROR, "Unable to start presence state change thread.\n");
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return -1;
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}
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return 0;
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}
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Reference in new issue