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push-notification-plugin.c
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push-notification-plugin.c
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/* Copyright (c) 2015-2018 Dovecot authors, see the included COPYING file */
#include "lib.h"
#include "array.h"
#include "ioloop.h"
#include "mail-namespace.h"
#include "mail-storage.h"
#include "mail-storage-private.h"
#include "notify-plugin.h"
#include "str.h"
#include "push-notification-drivers.h"
#include "push-notification-events.h"
#include "push-notification-events-rfc5423.h"
#include "push-notification-plugin.h"
#include "push-notification-triggers.h"
#include "push-notification-txn-mbox.h"
#include "push-notification-txn-msg.h"
#define PUSH_NOTIFICATION_CONFIG "push_notification_driver"
#define PUSH_NOTIFICATION_CONFIG_OLD "push_notification_backend"
#define PUSH_NOTIFICATION_USER_CONTEXT(obj) \
MODULE_CONTEXT_REQUIRE(obj, push_notification_user_module)
static MODULE_CONTEXT_DEFINE_INIT(push_notification_user_module,
&mail_user_module_register);
static struct ioloop *main_ioloop;
static void
push_notification_transaction_init(struct push_notification_txn *ptxn)
{
struct push_notification_driver_txn *dtxn;
struct push_notification_driver_user **duser;
struct mail_storage *storage;
if (ptxn->initialized) {
return;
}
ptxn->initialized = TRUE;
storage = mailbox_get_storage(ptxn->mbox);
if (storage->user->autocreated &&
(strcmp(storage->name, "raw") == 0)) {
/* no notifications for autocreated raw users */
return;
}
array_foreach_modifiable(&ptxn->puser->driverlist->drivers, duser) {
dtxn = p_new(ptxn->pool, struct push_notification_driver_txn, 1);
dtxn->duser = *duser;
dtxn->ptxn = ptxn;
if ((dtxn->duser->driver->v.begin_txn == NULL) ||
dtxn->duser->driver->v.begin_txn(dtxn)) {
array_append(&ptxn->drivers, &dtxn, 1);
}
}
}
static struct push_notification_txn *
push_notification_transaction_create(struct mailbox *box,
struct mailbox_transaction_context *t)
{
pool_t pool;
struct push_notification_txn *ptxn;
struct mail_storage *storage;
pool = pool_alloconly_create("push notification transaction", 2048);
ptxn = p_new(pool, struct push_notification_txn, 1);
ptxn->mbox = box;
storage = mailbox_get_storage(box);
ptxn->muser = mail_storage_get_user(storage);
ptxn->pool = pool;
ptxn->puser = PUSH_NOTIFICATION_USER_CONTEXT(ptxn->muser);
ptxn->t = t;
ptxn->trigger = PUSH_NOTIFICATION_EVENT_TRIGGER_NONE;
p_array_init(&ptxn->drivers, pool, 4);
return ptxn;
}
static void push_notification_transaction_end
(struct push_notification_txn *ptxn, bool success)
{
struct push_notification_driver_txn **dtxn;
if (ptxn->initialized) {
array_foreach_modifiable(&ptxn->drivers, dtxn) {
if ((*dtxn)->duser->driver->v.end_txn != NULL) {
(*dtxn)->duser->driver->v.end_txn(*dtxn, success);
}
}
}
pool_unref(&ptxn->pool);
}
static void push_notification_transaction_commit
(void *txn, struct mail_transaction_commit_changes *changes)
{
struct push_notification_txn *ptxn = (struct push_notification_txn *)txn;
struct ioloop *prev_ioloop = current_ioloop;
/* Make sure we're not in just any random ioloop, which could get
destroyed soon. This way the push-notification drivers can do async
operations that finish in the main ioloop. */
io_loop_set_current(main_ioloop);
if (changes == NULL) {
push_notification_txn_mbox_end(ptxn);
} else {
push_notification_txn_msg_end(ptxn, changes);
}
push_notification_transaction_end(ptxn, TRUE);
io_loop_set_current(prev_ioloop);
}
static void push_notification_mailbox_create(struct mailbox *box)
{
struct push_notification_txn *ptxn;
ptxn = push_notification_transaction_create(box, NULL);
push_notification_trigger_mbox_create(ptxn, box, NULL);
push_notification_transaction_commit(ptxn, NULL);
}
static void push_notification_mailbox_delete(void *txn ATTR_UNUSED,
struct mailbox *box)
{
struct push_notification_txn *ptxn;
ptxn = push_notification_transaction_create(box, NULL);
push_notification_trigger_mbox_delete(ptxn, box, NULL);
push_notification_transaction_commit(ptxn, NULL);
}
static void push_notification_mailbox_rename(struct mailbox *src,
struct mailbox *dest)
{
struct push_notification_txn *ptxn;
ptxn = push_notification_transaction_create(dest, NULL);
push_notification_trigger_mbox_rename(ptxn, src, dest, NULL);
push_notification_transaction_commit(ptxn, NULL);
}
static void push_notification_mailbox_subscribe(struct mailbox *box,
bool subscribed)
{
struct push_notification_txn *ptxn;
ptxn = push_notification_transaction_create(box, NULL);
push_notification_trigger_mbox_subscribe(ptxn, box, subscribed, NULL);
push_notification_transaction_commit(ptxn, NULL);
}
static void push_notification_mail_save(void *txn, struct mail *mail)
{
struct push_notification_txn *ptxn = txn;
push_notification_transaction_init(ptxn);
/* POST_SESSION means MTA delivery. */
if ((mail->box->flags & MAILBOX_FLAG_POST_SESSION) != 0) {
push_notification_trigger_msg_save_new(ptxn, mail, NULL);
} else {
push_notification_trigger_msg_save_append(ptxn, mail, NULL);
}
}
static void push_notification_mail_copy(void *txn,
struct mail *src ATTR_UNUSED,
struct mail *dest)
{
push_notification_mail_save(txn, dest);
}
static void push_notification_mail_expunge(void *txn, struct mail *mail)
{
struct push_notification_txn *ptxn = txn;
push_notification_transaction_init(ptxn);
push_notification_trigger_msg_save_expunge(txn, mail, NULL);
}
static void
push_notification_mail_update_flags(void *txn, struct mail *mail,
enum mail_flags old_flags)
{
struct push_notification_txn *ptxn = txn;
push_notification_transaction_init(ptxn);
push_notification_trigger_msg_flag_change(txn, mail, NULL, old_flags);
}
static void
push_notification_mail_update_keywords(void *txn, struct mail *mail,
const char *const *old_keywords)
{
struct push_notification_txn *ptxn = txn;
push_notification_transaction_init(ptxn);
push_notification_trigger_msg_keyword_change(txn, mail, NULL, old_keywords);
}
static void *
push_notification_transaction_begin(struct mailbox_transaction_context *t)
{
return push_notification_transaction_create(mailbox_transaction_get_mailbox(t), t);
}
static void push_notification_transaction_rollback(void *txn)
{
struct push_notification_txn *ptxn = txn;
push_notification_transaction_end(ptxn, FALSE);
}
static void
push_notification_config_init(const char *config_name,
struct mail_user *user,
struct push_notification_driver_list *dlist)
{
struct push_notification_driver_user *duser;
const char *env;
unsigned int i;
string_t *root_name;
root_name = t_str_new(32);
str_append(root_name, config_name);
for (i = 2;; i++) {
env = mail_user_plugin_getenv(user, str_c(root_name));
if ((env == NULL) || (*env == '\0')) {
break;
}
if (push_notification_driver_init(user, env, user->pool, &duser) < 0) {
break;
}
// Add driver.
array_append(&dlist->drivers, &duser, 1);
str_truncate(root_name, strlen(config_name));
str_printfa(root_name, "%d", i);
}
}
static struct push_notification_driver_list *
push_notification_driver_list_init(struct mail_user *user)
{
struct push_notification_driver_list *dlist;
dlist = p_new(user->pool, struct push_notification_driver_list, 1);
p_array_init(&dlist->drivers, user->pool, 4);
push_notification_config_init(PUSH_NOTIFICATION_CONFIG, user, dlist);
if (array_is_empty(&dlist->drivers)) {
/* Support old configuration (it was available at time initial OX
* driver was first released). */
push_notification_config_init(PUSH_NOTIFICATION_CONFIG_OLD, user,
dlist);
}
return dlist;
}
static void push_notification_user_deinit(struct mail_user *user)
{
struct push_notification_user *puser = PUSH_NOTIFICATION_USER_CONTEXT(user);
struct push_notification_driver_list *dlist = puser->driverlist;
struct push_notification_driver_user **duser;
struct ioloop *prev_ioloop = current_ioloop;
/* Make sure we're in the main ioloop, so if the deinit/cleanup moves any
I/Os or timeouts they won't get moved to some temporary ioloop. */
io_loop_set_current(main_ioloop);
array_foreach_modifiable(&dlist->drivers, duser) {
if ((*duser)->driver->v.deinit != NULL) {
(*duser)->driver->v.deinit(*duser);
}
if ((*duser)->driver->v.cleanup != NULL) {
(*duser)->driver->v.cleanup();
}
}
io_loop_set_current(prev_ioloop);
puser->module_ctx.super.deinit(user);
}
static void push_notification_user_created(struct mail_user *user)
{
struct mail_user_vfuncs *v = user->vlast;
struct push_notification_user *puser;
puser = p_new(user->pool, struct push_notification_user, 1);
puser->module_ctx.super = *v;
user->vlast = &puser->module_ctx.super;
v->deinit = push_notification_user_deinit;
puser->driverlist = push_notification_driver_list_init(user);
MODULE_CONTEXT_SET(user, push_notification_user_module, puser);
}
/* Plugin interface. */
const char *push_notification_plugin_version = DOVECOT_ABI_VERSION;
const char *push_notification_plugin_dependencies[] = { "notify", NULL };
extern struct push_notification_driver push_notification_driver_dlog;
extern struct push_notification_driver push_notification_driver_ox;
static struct notify_context *push_notification_ctx;
static const struct notify_vfuncs push_notification_vfuncs = {
/* Mailbox Events */
.mailbox_create = push_notification_mailbox_create,
.mailbox_delete_commit = push_notification_mailbox_delete,
.mailbox_rename = push_notification_mailbox_rename,
.mailbox_set_subscribed = push_notification_mailbox_subscribe,
/* Mail Events */
.mail_copy = push_notification_mail_copy,
.mail_save = push_notification_mail_save,
.mail_expunge = push_notification_mail_expunge,
.mail_update_flags = push_notification_mail_update_flags,
.mail_update_keywords = push_notification_mail_update_keywords,
.mail_transaction_begin = push_notification_transaction_begin,
.mail_transaction_commit = push_notification_transaction_commit,
.mail_transaction_rollback = push_notification_transaction_rollback
};
static struct mail_storage_hooks push_notification_storage_hooks = {
.mail_user_created = push_notification_user_created
};
void push_notification_plugin_init(struct module *module)
{
push_notification_ctx = notify_register(&push_notification_vfuncs);
mail_storage_hooks_add(module, &push_notification_storage_hooks);
push_notification_driver_register(&push_notification_driver_dlog);
push_notification_driver_register(&push_notification_driver_ox);
push_notification_event_register_rfc5423_events();
main_ioloop = current_ioloop;
i_assert(main_ioloop != NULL);
}
void push_notification_plugin_deinit(void)
{
push_notification_driver_unregister(&push_notification_driver_dlog);
push_notification_driver_unregister(&push_notification_driver_ox);
push_notification_event_unregister_rfc5423_events();
mail_storage_hooks_remove(&push_notification_storage_hooks);
notify_unregister(push_notification_ctx);
}