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iwd
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agent: Implement request core 

This patch adds core support for sending and managing requests
that are sent to user agent.
This commit is contained in:
Jukka Rissanen 2015-03-02 16:19:04 +02:00 committed by Denis Kenzior
parent ab07091f8c
commit e6e4649a40
1 changed files with 113 additions and 0 deletions
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113
src/agent.c
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@ -30,6 +30,12 @@
#include "src/dbus.h"
#include "src/agent.h"
/* Agent dbus request is done from iwd towards the agent */
struct agent_request {
struct l_dbus_message *message;
void *user_data;
};
struct agent {
char *owner;
char *path;
@ -42,6 +48,55 @@ struct agent {
static struct agent *default_agent = NULL;
static void send_request(struct agent *agent, const char *request)
{
struct l_dbus_message *message;
l_debug("send %s request to %s %s", request, agent->owner,
agent->path);
message = l_dbus_message_new_method_call(dbus_get_bus(),
agent->owner,
agent->path,
IWD_AGENT_INTERFACE,
request);
l_dbus_message_set_arguments(message, "");
l_dbus_send(dbus_get_bus(), message);
}
static void send_cancel_request(void *user_data)
{
struct agent *agent = user_data;
send_request(agent, "Cancel");
}
static void agent_request_free(void *user_data)
{
struct agent_request *request = user_data;
l_dbus_message_unref(request->message);
l_free(request);
}
static void agent_finalize_pending(struct agent *agent,
struct l_dbus_message *reply)
{
struct agent_request *pending;
if (agent->timeout) {
l_timeout_remove(agent->timeout);
agent->timeout = NULL;
}
pending = l_queue_pop_head(agent->requests);
agent_request_free(pending);
}
static void agent_free(void *data)
{
struct agent *agent = data;
@ -51,6 +106,11 @@ static void agent_free(void *data)
if (agent->timeout)
l_timeout_remove(agent->timeout);
if (agent->pending_id)
l_dbus_cancel(dbus_get_bus(), agent->pending_id);
l_queue_destroy(agent->requests, agent_request_free);
if (agent->disconnect_watch)
l_dbus_remove_watch(dbus_get_bus(), agent->disconnect_watch);
@ -61,6 +121,59 @@ static void agent_free(void *data)
default_agent = NULL;
}
static void agent_send_next_request(struct agent *agent);
static void request_timeout(struct l_timeout *timeout, void *user_data)
{
struct agent *agent = user_data;
l_dbus_cancel(dbus_get_bus(), agent->pending_id);
send_cancel_request(agent);
agent_finalize_pending(agent, NULL);
agent_send_next_request(agent);
}
static void agent_receive_reply(struct l_dbus_message *message,
void *user_data)
{
struct agent *agent = user_data;
l_debug("agent %p request id %u", agent, agent->pending_id);
agent->pending_id = 0;
agent_finalize_pending(agent, message);
agent_send_next_request(agent);
}
static void agent_send_next_request(struct agent *agent)
{
struct agent_request *pending;
pending = l_queue_peek_head(agent->requests);
if (!pending)
return;
agent->timeout = l_timeout_create(agent->timeout_secs,
request_timeout,
agent, NULL);
l_debug("send request to %s %s", agent->owner, agent->path);
agent->pending_id = l_dbus_send_with_reply(dbus_get_bus(),
pending->message,
agent_receive_reply,
agent, NULL);
pending->message = NULL;
return;
}
static void agent_disconnect(struct l_dbus *dbus, void *user_data)
{
struct agent *agent = user_data;