quota-clone-plugin.c revision 8705e45564a2e87d32bd825e0e997a8177846f77
2e29e4797a48d78d669821722bdb54fd0a1d3b94Timo Sirainen/* Copyright (c) 2015 Dovecot authors, see the included COPYING file */
2e29e4797a48d78d669821722bdb54fd0a1d3b94Timo Sirainen
2e29e4797a48d78d669821722bdb54fd0a1d3b94Timo Sirainen#include "lib.h"
2e29e4797a48d78d669821722bdb54fd0a1d3b94Timo Sirainen#include "module-context.h"
2e29e4797a48d78d669821722bdb54fd0a1d3b94Timo Sirainen#include "dict.h"
2e29e4797a48d78d669821722bdb54fd0a1d3b94Timo Sirainen#include "mail-storage-private.h"
2e29e4797a48d78d669821722bdb54fd0a1d3b94Timo Sirainen#include "quota.h"
#include "quota-clone-plugin.h"
#define DICT_QUOTA_CLONE_PATH DICT_PATH_PRIVATE"quota/"
#define DICT_QUOTA_CLONE_BYTES_PATH DICT_QUOTA_CLONE_PATH"storage"
#define DICT_QUOTA_CLONE_COUNT_PATH DICT_QUOTA_CLONE_PATH"messages"
#define QUOTA_CLONE_USER_CONTEXT(obj) \
MODULE_CONTEXT(obj, quota_clone_user_module)
#define QUOTA_CLONE_CONTEXT(obj) \
MODULE_CONTEXT(obj, quota_clone_storage_module)
static MODULE_CONTEXT_DEFINE_INIT(quota_clone_user_module,
&mail_user_module_register);
static MODULE_CONTEXT_DEFINE_INIT(quota_clone_storage_module,
&mail_storage_module_register);
struct quota_clone_user {
union mail_user_module_context module_ctx;
struct dict *dict;
};
struct quota_clone_mailbox {
union mailbox_module_context module_ctx;
bool quota_changed;
bool quota_flushing;
};
static void quota_clone_flush(struct mailbox *box)
{
struct quota_clone_mailbox *qbox = QUOTA_CLONE_CONTEXT(box);
struct quota_clone_user *quser =
QUOTA_CLONE_USER_CONTEXT(box->storage->user);
struct dict_transaction_context *trans;
struct quota_root_iter *iter;
struct quota_root *root;
uint64_t value, limit;
int ret;
/* we'll clone the first quota root */
iter = quota_root_iter_init(box);
root = quota_root_iter_next(iter);
quota_root_iter_deinit(&iter);
if (root == NULL) {
/* no quota roots defined for this mailbox - ignore */
qbox->quota_changed = FALSE;
return;
}
trans = dict_transaction_begin(quser->dict);
/* update bytes */
ret = quota_get_resource(root, "", QUOTA_NAME_STORAGE_BYTES,
&value, &limit);
if (ret < 0)
i_error("quota_clone_plugin: Failed to lookup current quota bytes");
else {
dict_set(trans, DICT_QUOTA_CLONE_BYTES_PATH,
t_strdup_printf("%llu", (unsigned long long)value));
}
/* update messages */
ret = quota_get_resource(root, "", QUOTA_NAME_MESSAGES,
&value, &limit);
if (ret < 0)
i_error("quota_clone_plugin: Failed to lookup current quota count");
else {
dict_set(trans, DICT_QUOTA_CLONE_COUNT_PATH,
t_strdup_printf("%llu", (unsigned long long)value));
}
if (dict_transaction_commit(&trans) < 0)
i_error("quota_clone_plugin: Failed to commit dict update");
else
qbox->quota_changed = FALSE;
}
static int quota_clone_save_finish(struct mail_save_context *ctx)
{
struct quota_clone_mailbox *qbox =
QUOTA_CLONE_CONTEXT(ctx->transaction->box);
qbox->quota_changed = TRUE;
return qbox->module_ctx.super.save_finish(ctx);
}
static int
quota_clone_copy(struct mail_save_context *ctx, struct mail *mail)
{
struct quota_clone_mailbox *qbox =
QUOTA_CLONE_CONTEXT(ctx->transaction->box);
qbox->quota_changed = TRUE;
return qbox->module_ctx.super.copy(ctx, mail);
}
static void
quota_clone_mailbox_sync_notify(struct mailbox *box, uint32_t uid,
enum mailbox_sync_type sync_type)
{
struct quota_clone_mailbox *qbox = QUOTA_CLONE_CONTEXT(box);
if (qbox->module_ctx.super.sync_notify != NULL)
qbox->module_ctx.super.sync_notify(box, uid, sync_type);
if (sync_type == MAILBOX_SYNC_TYPE_EXPUNGE)
qbox->quota_changed = TRUE;
}
static void quota_clone_mailbox_close(struct mailbox *box)
{
struct quota_clone_mailbox *qbox = QUOTA_CLONE_CONTEXT(box);
qbox->module_ctx.super.close(box);
if (qbox->quota_flushing) {
/* recursing back from quota recalculation */
} else if (qbox->quota_changed) {
qbox->quota_flushing = TRUE;
quota_clone_flush(box);
qbox->quota_flushing = FALSE;
}
}
static void quota_clone_mailbox_allocated(struct mailbox *box)
{
struct quota_clone_user *quser =
QUOTA_CLONE_USER_CONTEXT(box->storage->user);
struct mailbox_vfuncs *v = box->vlast;
struct quota_clone_mailbox *qbox;
if (quser == NULL)
return;
qbox = p_new(box->pool, struct quota_clone_mailbox, 1);
qbox->module_ctx.super = *v;
box->vlast = &qbox->module_ctx.super;
v->save_finish = quota_clone_save_finish;
v->copy = quota_clone_copy;
v->sync_notify = quota_clone_mailbox_sync_notify;
v->close = quota_clone_mailbox_close;
MODULE_CONTEXT_SET(box, quota_clone_storage_module, qbox);
}
static void quota_clone_mail_user_deinit(struct mail_user *user)
{
struct quota_clone_user *quser = QUOTA_CLONE_USER_CONTEXT(user);
dict_deinit(&quser->dict);
quser->module_ctx.super.deinit(user);
}
static void quota_clone_mail_user_created(struct mail_user *user)
{
struct quota_clone_user *quser;
struct mail_user_vfuncs *v = user->vlast;
struct dict_settings dict_set;
struct dict *dict;
const char *uri, *error;
uri = mail_user_plugin_getenv(user, "quota_clone_dict");
if (uri == NULL || uri[0] == '\0') {
i_error("The quota_clone_dict setting is missing from configuration");
return;
}
memset(&dict_set, 0, sizeof(dict_set));
dict_set.username = user->username;
dict_set.base_dir = user->set->base_dir;
(void)mail_user_get_home(user, &dict_set.home_dir);
if (dict_init_full(uri, &dict_set, &dict, &error) < 0) {
i_error("quota_clone_dict: Failed to initialize '%s': %s",
uri, error);
return;
}
quser = p_new(user->pool, struct quota_clone_user, 1);
quser->module_ctx.super = *v;
user->vlast = &quser->module_ctx.super;
v->deinit = quota_clone_mail_user_deinit;
quser->dict = dict;
MODULE_CONTEXT_SET(user, quota_clone_user_module, quser);
}
static struct mail_storage_hooks quota_clone_mail_storage_hooks = {
.mailbox_allocated = quota_clone_mailbox_allocated,
.mail_user_created = quota_clone_mail_user_created
};
void quota_clone_plugin_init(struct module *module ATTR_UNUSED)
{
mail_storage_hooks_add(module, &quota_clone_mail_storage_hooks);
}
void quota_clone_plugin_deinit(void)
{
mail_storage_hooks_remove(&quota_clone_mail_storage_hooks);
}
const char *quota_clone_plugin_dependencies[] = { "quota", NULL };