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res_ari: Fix various memory leaks.

Browse Source 
This change fixes a few memory leaks that were found based
on a mailing list post.

1. Some JSON response messages were never freed. This was
caused by the documentation stating that message references
were stolen when in reality they were not. The code now follows
the documentation and usage has been updated.

2. HTTP response headers were never freed.

3. The variable list for wildcards paths was never freed.

(closes issue ASTERISK-23128)
Reported by: Kenneth Watson (on list)

Review: https://reviewboard.asterisk.org/r/3119/
........

Merged revisions 405325 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@405326 65c4cc65-6c06-0410-ace0-fbb531ad65f3
changes/97/197/1
Joshua Colp 12 years ago
parent 373965dbff
commit 8585340b87
9 changed files with 32 additions and 31 deletions
Show Stats Download Patch File Download Diff File

6
include/asterisk/ari.h
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@ -214,7 +214,7 @@ __attribute__((format(printf, 4, 5)));
* \brief Fill in an \c OK (200) \a ast_ari_response.
* \param response Response to fill in.
* \param message JSON response. This reference is stolen, so just \ref
* ast_json_incref if you need to keep a reference to it.
* ast_json_ref if you need to keep a reference to it.
*/
void ast_ari_response_ok(struct ast_ari_response *response,
struct ast_json *message);
@ -226,6 +226,10 @@ void ast_ari_response_no_content(struct ast_ari_response *response);
/*!
* \brief Fill in a <tt>Created</tt> (201) \a ast_ari_response.
* \param response Response to fill in.
* \param url URL to the created resource.
* \param message JSON response. This reference is stolen, so just \ref
* ast_json_ref if you need to keep a reference to it.
*/
void ast_ari_response_created(struct ast_ari_response *response,
const char *url, struct ast_json *message);

9
res/ari/resource_applications.c
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@ -68,15 +68,14 @@ void ast_ari_applications_list(struct ast_variable *headers,
return;
}
ast_ari_response_ok(response, json);
ast_ari_response_ok(response, ast_json_ref(json));
}
void ast_ari_applications_get(struct ast_variable *headers,
struct ast_ari_applications_get_args *args,
struct ast_ari_response *response)
{
RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
struct ast_json *json;
json = stasis_app_to_json(args->application_name);
@ -113,7 +112,7 @@ void ast_ari_applications_subscribe(struct ast_variable *headers,
switch (res) {
case STASIS_ASR_OK:
ast_ari_response_ok(response, json);
ast_ari_response_ok(response, ast_json_ref(json));
break;
case STASIS_ASR_APP_NOT_FOUND:
ast_ari_response_error(response, 404, "Not Found",
@ -152,7 +151,7 @@ void ast_ari_applications_unsubscribe(struct ast_variable *headers,
switch (res) {
case STASIS_ASR_OK:
ast_ari_response_ok(response, json);
ast_ari_response_ok(response, ast_json_ref(json));
break;
case STASIS_ASR_APP_NOT_FOUND:
ast_ari_response_error(response, 404, "Not Found",

4
res/ari/resource_bridges.c
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@ -411,7 +411,7 @@ void ast_ari_bridges_play(struct ast_variable *headers,
play_channel = NULL;
control = NULL;
ast_ari_response_created(response, playback_url, json);
ast_ari_response_created(response, playback_url, ast_json_ref(json));
}
void ast_ari_bridges_record(struct ast_variable *headers,
@ -566,7 +566,7 @@ void ast_ari_bridges_record(struct ast_variable *headers,
record_channel = NULL;
control = NULL;
ast_ari_response_created(response, recording_url, json);
ast_ari_response_created(response, recording_url, ast_json_ref(json));
}
void ast_ari_bridges_start_moh(struct ast_variable *headers,

4
res/ari/resource_channels.c
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@ -362,7 +362,7 @@ void ast_ari_channels_play(struct ast_variable *headers,
RAII_VAR(struct ast_channel_snapshot *, snapshot, NULL, ao2_cleanup);
RAII_VAR(struct stasis_app_playback *, playback, NULL, ao2_cleanup);
RAII_VAR(char *, playback_url, NULL, ast_free);
RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
struct ast_json *json;
const char *language;
ast_assert(response != NULL);
@ -434,7 +434,7 @@ void ast_ari_channels_record(struct ast_variable *headers,
RAII_VAR(struct ast_channel_snapshot *, snapshot, NULL, ao2_cleanup);
RAII_VAR(struct stasis_app_recording *, recording, NULL, ao2_cleanup);
RAII_VAR(char *, recording_url, NULL, ast_free);
RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
struct ast_json *json;
RAII_VAR(struct stasis_app_recording_options *, options, NULL,
ao2_cleanup);
RAII_VAR(char *, uri_encoded_name, NULL, ast_free);

4
res/ari/resource_device_states.c
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@ -35,7 +35,7 @@ void ast_ari_device_states_list(
struct ast_ari_device_states_list_args *args,
struct ast_ari_response *response)
{
RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
struct ast_json *json;
if (!(json = stasis_app_device_states_to_json())) {
ast_ari_response_error(response, 500,
@ -50,7 +50,7 @@ void ast_ari_device_states_get(struct ast_variable *headers,
struct ast_ari_device_states_get_args *args,
struct ast_ari_response *response)
{
RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
struct ast_json *json;
if (!(json = stasis_app_device_state_to_json(
args->device_name, ast_device_state(args->device_name)))) {

4
res/ari/resource_endpoints.c
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@ -158,7 +158,7 @@ void ast_ari_endpoints_get(struct ast_variable *headers,
struct ast_ari_endpoints_get_args *args,
struct ast_ari_response *response)
{
RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
struct ast_json *json;
RAII_VAR(struct ast_endpoint_snapshot *, snapshot, NULL, ao2_cleanup);
snapshot = ast_endpoint_latest_snapshot(args->tech, args->resource);
@ -174,5 +174,5 @@ void ast_ari_endpoints_get(struct ast_variable *headers,
return;
}
ast_ari_response_ok(response, ast_json_ref(json));
ast_ari_response_ok(response, json);
}

4
res/ari/resource_playbacks.c
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@ -35,7 +35,7 @@ void ast_ari_playbacks_get(struct ast_variable *headers,
struct ast_ari_response *response)
{
RAII_VAR(struct stasis_app_playback *, playback, NULL, ao2_cleanup);
RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
struct ast_json *json;
playback = stasis_app_playback_find_by_id(args->playback_id);
if (playback == NULL) {
@ -51,7 +51,7 @@ void ast_ari_playbacks_get(struct ast_variable *headers,
return;
}
ast_ari_response_ok(response, ast_json_ref(json));
ast_ari_response_ok(response, json);
}
void ast_ari_playbacks_stop(struct ast_variable *headers,
struct ast_ari_playbacks_stop_args *args,

8
res/ari/resource_recordings.c
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@ -76,7 +76,7 @@ void ast_ari_recordings_get_stored(struct ast_variable *headers,
{
RAII_VAR(struct stasis_app_stored_recording *, recording, NULL,
ao2_cleanup);
RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
struct ast_json *json;
recording = stasis_app_stored_recording_find_by_name(
args->recording_name);
@ -93,7 +93,7 @@ void ast_ari_recordings_get_stored(struct ast_variable *headers,
return;
}
ast_ari_response_ok(response, ast_json_ref(json));
ast_ari_response_ok(response, json);
}
void ast_ari_recordings_delete_stored(struct ast_variable *headers,
@ -142,7 +142,7 @@ void ast_ari_recordings_get_live(struct ast_variable *headers,
struct ast_ari_response *response)
{
RAII_VAR(struct stasis_app_recording *, recording, NULL, ao2_cleanup);
RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
struct ast_json *json;
recording = stasis_app_recording_find_by_name(args->recording_name);
if (recording == NULL) {
@ -158,7 +158,7 @@ void ast_ari_recordings_get_live(struct ast_variable *headers,
return;
}
ast_ari_response_ok(response, ast_json_ref(json));
ast_ari_response_ok(response, json);
}
static void control_recording(const char *name,

20
res/res_ari.c
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@ -253,7 +253,7 @@ void ast_ari_response_error(struct ast_ari_response *response,
void ast_ari_response_ok(struct ast_ari_response *response,
struct ast_json *message)
{
response->message = ast_json_ref(message);
response->message = message;
response->response_code = 200;
response->response_text = "OK";
}
@ -275,7 +275,7 @@ void ast_ari_response_alloc_failed(struct ast_ari_response *response)
void ast_ari_response_created(struct ast_ari_response *response,
const char *url, struct ast_json *message)
{
response->message = ast_json_ref(message);
response->message = message;
response->response_code = 201;
response->response_text = "Created";
ast_str_append(&response->headers, 0, "Location: %s\r\n", url);
@ -465,7 +465,7 @@ void ast_ari_invoke(struct ast_tcptls_session_instance *ser,
RAII_VAR(char *, response_text, NULL, ast_free);
RAII_VAR(struct stasis_rest_handlers *, root, NULL, ao2_cleanup);
struct stasis_rest_handlers *handler;
struct ast_variable *path_vars = NULL;
RAII_VAR(struct ast_variable *, path_vars, NULL, ast_variables_destroy);
char *path = ast_strdupa(uri);
char *path_segment;
stasis_rest_callback callback;
@ -839,14 +839,13 @@ static int ast_ari_callback(struct ast_tcptls_session_instance *ser,
struct ast_variable *headers)
{
RAII_VAR(struct ast_ari_conf *, conf, NULL, ao2_cleanup);
RAII_VAR(struct ast_str *, response_headers, ast_str_create(40), ast_free);
RAII_VAR(struct ast_str *, response_body, ast_str_create(256), ast_free);
RAII_VAR(struct ast_ari_conf_user *, user, NULL, ao2_cleanup);
struct ast_ari_response response = {};
int ret = 0;
RAII_VAR(struct ast_variable *, post_vars, NULL, ast_variables_destroy);
if (!response_headers || !response_body) {
if (!response_body) {
return -1;
}
@ -857,6 +856,7 @@ static int ast_ari_callback(struct ast_tcptls_session_instance *ser,
conf = ast_ari_config_get();
if (!conf || !conf->general) {
ast_free(response.headers);
return -1;
}
@ -955,6 +955,7 @@ static int ast_ari_callback(struct ast_tcptls_session_instance *ser,
if (response.no_response) {
/* The handler indicates no further response is necessary.
* Probably because it already handled it */
ast_free(response.headers);
return 0;
}
@ -964,13 +965,11 @@ static int ast_ari_callback(struct ast_tcptls_session_instance *ser,
ast_assert(response.message != NULL);
ast_assert(response.response_code > 0);
ast_str_append(&response_headers, 0, "%s", ast_str_buffer(response.headers));
/* response.message could be NULL, in which case the empty response_body
* is correct
*/
if (response.message && !ast_json_is_null(response.message)) {
ast_str_append(&response_headers, 0,
ast_str_append(&response.headers, 0,
"Content-type: application/json\r\n");
if (ast_json_dump_str_format(response.message, &response_body,
conf->general->format) != 0) {
@ -978,16 +977,15 @@ static int ast_ari_callback(struct ast_tcptls_session_instance *ser,
response.response_code = 500;
response.response_text = "Internal Server Error";
ast_str_set(&response_body, 0, "%s", "");
ast_str_set(&response_headers, 0, "%s", "");
ast_str_set(&response.headers, 0, "%s", "");
ret = -1;
}
}
ast_http_send(ser, method, response.response_code,
response.response_text, response_headers, response_body,
response.response_text, response.headers, response_body,
0, 0);
/* ast_http_send takes ownership, so we don't have to free them */
response_headers = NULL;
response_body = NULL;
ast_json_unref(response.message);

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