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//
// Subscription handling
//
#include <stdio.h>
#include <string.h>
#include "dthread/include/dlog.h"
#include "bt_sub.h"
#define alloc_type(type) calloc(1, sizeof(type))
static char* format_subscription_type(subscription_type_t type)
{
switch(type) {
case INQUIRY: return "INQUIRY";
case REMOTE_NAME: return "REMOTE_NAME";
case CONNECT: return "CONNECT";
case SDP_QUERY: return "SPD_QUERY";
case SDP: return "SDP";
case RFCOMM: return "RFCOMM";
case RFCOMM_LISTEN: return "RFCOMM_LISTEN";
case L2CAP: return "LPCAP";
case L2CAP_LISTEN: return "LPCAP_LISTEN";
default: return "????";
}
}
char* format_subscription(subscription_t* s)
{
static char format_buf[128];
snprintf(format_buf, sizeof(format_buf),
"%s id=%u,handle=%p ref=%u",
format_subscription_type(s->type),
s->id, s->handle, s->ref);
return format_buf;
}
subscription_t* new_subscription(subscription_type_t type,
uint32_t id, uint32_t cmdid,
void* handle,
void (*cleanup)(subscription_t* s))
{
subscription_t* s = alloc_type(subscription_t);
s->type = type;
s->id = id;
s->cmdid = cmdid;
s->handle = handle;
s->opaque = NULL;
s->ref = 0;
s->accept = NULL;
s->cleanup = cleanup;
return s;
}
subscription_list_t* new_subscription_list()
{
subscription_list_t* list = alloc_type(subscription_list_t);
return list;
}
subscription_t* retain_subscription(subscription_t* s)
{
if (s == NULL) {
DEBUGF("retain_subscription: NULL");
}
else {
DEBUGF("retain_subscription: %s", format_subscription(s));
s->ref++;
}
return s;
}
subscription_link_t* new_subscription_link(subscription_list_t* list,
subscription_t* s)
{
subscription_link_t* link = alloc_type(subscription_link_t);
if (link) {
link->list = list;
link->s = retain_subscription(s);
}
return link;
}
subscription_t* release_subscription(subscription_t* s)
{
DEBUGF("release_subscription: %s", format_subscription(s));
if (s->ref <= 1) {
if (s->cleanup)
(*s->cleanup)(s);
if (s->opaque != NULL)
free(s->opaque);
free(s);
return NULL;
}
else {
s->ref--;
return s;
}
}
subscription_link_t* insert_after_link(subscription_link_t* link,
subscription_link_t* after_link)
{
subscription_list_t* list = after_link->list;
link->next = after_link->next;
link->prev = after_link;
link->list = list;
after_link->next = link;
if (link->next == NULL)
list->last = link;
else
link->next->prev = link;
list->length++;
return link;
}
subscription_link_t* insert_before_link(subscription_link_t* link,
subscription_link_t* before_link)
{
if (before_link->prev != NULL)
return insert_after_link(link, before_link->prev);
else {
subscription_list_t* list = before_link->list;
link->next = before_link;
link->list = list;
before_link->prev = link;
list->first = link;
list->length++;
}
return link;
}
int insert_link_first(subscription_link_t* link)
{
if (link != NULL) {
subscription_list_t* list = link->list;
link->next = list->first;
link->prev = NULL;
if (list->first != NULL)
list->first->prev = link;
else
list->last = link;
list->first = link;
list->length++;
return 0;
}
return -1;
}
int insert_first(subscription_list_t* list, subscription_t* s)
{
subscription_link_t* link = new_subscription_link(list,s);
return insert_link_first(link);
}
int insert_link_last(subscription_link_t* link)
{
if (link != NULL) {
subscription_list_t* list = link->list;
link->next = NULL;
link->prev = list->last;
if (list->last)
list->last->next = link;
else
list->first = link;
list->last = link;
list->length++;
return 0;
}
return -1;
}
int insert_last(subscription_list_t* list, subscription_t*s)
{
subscription_link_t* link = new_subscription_link(list,s);
return insert_link_last(link);
}
subscription_link_t* find_subscription_link(subscription_list_t* list,
subscription_type_t type,
uint32_t sid)
{
subscription_link_t* p = list->first;
DEBUGF("find_subscription_link: %s id=%u",
format_subscription_type(type), sid);
while(p) {
if ((p->s->id == sid) && (p->s->type == type))
return p;
p = p->next;
}
return NULL;
}
subscription_t* find_subscription(subscription_list_t* list,
subscription_type_t type,
uint32_t sid)
{
subscription_link_t* p = find_subscription_link(list, type, sid);
if (p != NULL)
return p->s;
return NULL;
}
void unlink_subscription(subscription_link_t* link)
{
subscription_list_t* list = link->list;
DEBUGF("unlink_subscription: %s", format_subscription(link->s));
if (link->prev != NULL)
link->prev->next = link->next;
else
list->first = link->next;
if (link->next != NULL)
link->next->prev = link->prev;
else
list->last = link->prev;
list->length--;
release_subscription(link->s);
free(link);
}
int remove_subscription(subscription_list_t* list,
subscription_type_t type, uint32_t sid)
{
subscription_link_t* link;
if ((link = find_subscription_link(list, type, sid)) != NULL) {
unlink_subscription(link);
return 1;
}
return 0;
}
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