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#include <stdlib.h>
#include <string.h>
#include "triton.h"
#include "log.h"
#include "events.h"
#include "ap_session.h"
#include "backup.h"
#ifdef USE_BACKUP
static LIST_HEAD(storage_list);
static LIST_HEAD(module_list);
struct backup_tag __export *backup_add_tag(struct backup_mod *m, uint8_t id, int internal, const void *data, size_t size)
{
struct backup_tag *t;
t = m->data->storage->alloc_tag(m->data, size);
if (!t)
return NULL;
t->id = id;
t->internal = internal;
t->size = size;
memcpy(t->data, data, size);
list_add_tail(&t->entry, &m->tag_list);
return t;
}
void backup_add_fd(struct backup_mod *m, int fd)
{
if (m->data->storage->add_fd)
m->data->storage->add_fd(m->data, fd);
}
struct backup_mod __export *backup_find_mod(struct backup_data *d, uint8_t mod_id)
{
struct backup_mod *m;
list_for_each_entry(m, &d->mod_list, entry) {
if (m->id == mod_id)
return m;
}
return NULL;
}
struct backup_tag __export *backup_find_tag(struct backup_data *d, uint8_t mod_id, uint8_t tag_id, int internal)
{
struct backup_mod *m = backup_find_mod(d, mod_id);
struct backup_tag *t;
if (!m)
return NULL;
list_for_each_entry(t, &m->tag_list, entry) {
if (t->id == tag_id && t->internal == internal)
return t;
}
return NULL;
}
void __export backup_free(struct backup_data *data)
{
struct backup_mod *m;
struct backup_tag *t;
while (!list_empty(&data->mod_list)) {
m = list_entry(data->mod_list.next, typeof(*m), entry);
while (!list_empty(&m->tag_list)) {
t = list_entry(m->tag_list.next, typeof(*t), entry);
list_del(&t->entry);
data->storage->free_tag(data, t);
}
list_del(&m->entry);
data->storage->free_mod(m);
}
data->storage->free(data);
}
int __export backup_save_session(struct ap_session *ses)
{
struct backup_storage *storage;
struct backup_module *module;
struct backup_data *d;
struct backup_mod *m;
int r, f1 = 0, f2;
list_for_each_entry(storage, &storage_list, entry) {
d = storage->create(ses);
if (!d)
continue;
//d->ses = ses;
f2 = 0;
list_for_each_entry(module, &module_list, entry) {
if (!module->save)
continue;
m = storage->alloc_mod(d);
if (!m) {
f2 = 1;
break;
}
m->data = d;
m->id = module->id;
r = module->save(ses, m);
if (r == -2) {
storage->free_mod(m);
continue;
}
list_add_tail(&m->entry, &d->mod_list);
if (r == -1) {
f2 = 1;
break;
}
}
if (f2)
backup_free(d);
else {
f1 = 1;
if (storage->commit)
storage->commit(d);
ses->backup = d;
}
}
return !f1;
}
/*int backup_restore_internal(void)
{
struct backup_storage *storage;
list_for_each_entry(storage, &storage_list, entry) {
if (storage->restore_internal) {
if (storage->check_integrity())
continue;
storage->restore_internal();
return 0;
}
}
return -1;
}
void backup_restore_external(void)
{
struct backup_storage *storage;
list_for_each_entry(storage, &storage_list, entry) {
if (storage->restore_external) {
if (storage->check_integrity())
continue;
storage->restore_external();
return;
}
}
}*/
static void __restore_session(struct ap_session *ses)
{
struct backup_module *module;
struct backup_mod *m;
struct backup_module *ctrl = NULL;
list_for_each_entry(module, &module_list, entry) {
if (module->ctrl_start)
ctrl = module;
if (module->restore) {
m = backup_find_mod(ses->backup, module->id);
if (!m)
continue;
module->restore(ses, m);
}
}
log_ppp_info1("session restored\n");
if (ctrl)
ctrl->ctrl_start(ses);
else {
triton_event_fire(EV_CTRL_STARTING, ses);
triton_event_fire(EV_CTRL_STARTED, ses);
ap_session_starting(ses);
ap_session_activate(ses);
}
}
void __export backup_restore_session(struct backup_data *d)
{
struct backup_module *module;
struct backup_mod *m;
struct ap_session *ses;
list_for_each_entry(module, &module_list, entry) {
if (module->ctrl_restore) {
m = backup_find_mod(d, module->id);
if (!m)
continue;
ses = module->ctrl_restore(m);
ses->backup = d;
d->ses = ses;
ses->state = AP_STATE_RESTORE;
triton_context_call(ses->ctrl->ctx, (triton_event_func)__restore_session, ses);
break;
}
}
}
void __export backup_register_module(struct backup_module *m)
{
list_add_tail(&m->entry, &module_list);
}
void __export backup_register_storage(struct backup_storage *s)
{
list_add_tail(&s->entry, &storage_list);
}
void backup_restore_fd()
{
}
void backup_restore(int internal)
{
struct backup_storage *storage;
struct backup_module *module;
list_for_each_entry(storage, &storage_list, entry) {
if (storage->restore)
storage->restore(internal);
}
list_for_each_entry(module, &module_list, entry) {
if (module->restore_complete)
module->restore_complete();
}
}
#endif
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