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79eac1ffca
res_pjsip_pubsub has two separate checks that it makes when a SUBSCRIBE arrives. * It checks that there is a subscription handler for the Event * It checks that there are body generators for the types in the Accept header The problem is, there's nothing that ensures that these two things will actually mesh with each other. For instance, Asterisk will accept a subscription to MWI that accepts pidf+xml bodies. That doesn't make sense. With this commit, we add some type information to the mix. Subscription handlers state they generate data of type X, and body generators state that they consume data of type X. This way, Asterisk doesn't end up in some hilariously mismatched situation like the one in the previous paragraph. ASTERISK-24136 #close Reported by Mark Michelson Review: https://reviewboard.asterisk.org/r/3877 Review: https://reviewboard.asterisk.org/r/3878 ........ Merged revisions 423344 from http://svn.asterisk.org/svn/asterisk/branches/12 ........ Merged revisions 423348 from http://svn.asterisk.org/svn/asterisk/branches/13 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@423350 65c4cc65-6c06-0410-ace0-fbb531ad65f3
115 lines
2.7 KiB
C
115 lines
2.7 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2014, Digium, Inc.
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*
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* Mark Michelson <mmichelson@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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/*** MODULEINFO
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<depend>pjproject</depend>
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<depend>res_pjsip</depend>
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<depend>res_pjsip_pubsub</depend>
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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#include <pjsip.h>
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#include <pjsip_simple.h>
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#include <pjlib.h>
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#include "asterisk/res_pjsip.h"
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#include "asterisk/res_pjsip_pubsub.h"
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#include "asterisk/res_pjsip_body_generator_types.h"
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#include "asterisk/module.h"
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#include "asterisk/strings.h"
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#define MWI_TYPE "application"
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#define MWI_SUBTYPE "simple-message-summary"
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static void *mwi_allocate_body(void *data)
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{
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struct ast_str **mwi_str;
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mwi_str = ast_malloc(sizeof(*mwi_str));
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if (!mwi_str) {
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return NULL;
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}
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*mwi_str = ast_str_create(64);
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if (!*mwi_str) {
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ast_free(mwi_str);
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return NULL;
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}
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return mwi_str;
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}
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static int mwi_generate_body_content(void *body, void *data)
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{
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struct ast_str **mwi = body;
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struct ast_sip_message_accumulator *counter = data;
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ast_str_append(mwi, 0, "Messages-Waiting: %s\r\n",
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counter->new_msgs ? "yes" : "no");
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ast_str_append(mwi, 0, "Voice-Message: %d/%d (0/0)\r\n",
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counter->new_msgs, counter->old_msgs);
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return 0;
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}
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static void mwi_to_string(void *body, struct ast_str **str)
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{
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struct ast_str **mwi = body;
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ast_str_set(str, 0, "%s", ast_str_buffer(*mwi));
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}
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static void mwi_destroy_body(void *body)
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{
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struct ast_str **mwi = body;
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ast_free(*mwi);
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ast_free(mwi);
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}
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static struct ast_sip_pubsub_body_generator mwi_generator = {
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.type = MWI_TYPE,
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.subtype = MWI_SUBTYPE,
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.body_type = AST_SIP_MESSAGE_ACCUMULATOR,
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.allocate_body = mwi_allocate_body,
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.generate_body_content = mwi_generate_body_content,
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.to_string = mwi_to_string,
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.destroy_body = mwi_destroy_body,
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};
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static int load_module(void)
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{
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if (ast_sip_pubsub_register_body_generator(&mwi_generator)) {
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return AST_MODULE_LOAD_DECLINE;
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}
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return AST_MODULE_LOAD_SUCCESS;
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}
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static int unload_module(void)
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{
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ast_sip_pubsub_unregister_body_generator(&mwi_generator);
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return 0;
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}
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AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "PJSIP MWI resource",
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.support_level = AST_MODULE_SUPPORT_CORE,
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.load = load_module,
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.unload = unload_module,
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.load_pri = AST_MODPRI_CHANNEL_DEPEND,
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);
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