mdbox-deleted-storage.c revision 2454dfa32c93c20a8522c6ed42fe057baaac9f9a
/* Copyright (c) 2013-2017 Dovecot authors, see the included COPYING file */
#include "lib.h"
#include "array.h"
#include "ioloop.h"
#include "mkdir-parents.h"
#include "master-service.h"
#include "mail-index-modseq.h"
#include "mail-index-alloc-cache.h"
#include "mailbox-log.h"
#include "mailbox-list-private.h"
#include "mail-copy.h"
#include "dbox-mail.h"
#include "dbox-save.h"
#include "mdbox-map.h"
#include "mdbox-file.h"
#include "mdbox-sync.h"
#include "mdbox-storage-rebuild.h"
#include "mdbox-storage.h"
extern struct mail_storage mdbox_deleted_storage;
extern struct mailbox mdbox_deleted_mailbox;
extern struct dbox_storage_vfuncs mdbox_deleted_dbox_storage_vfuncs;
static struct mail_storage *mdbox_deleted_storage_alloc(void)
{
struct mdbox_storage *storage;
pool_t pool;
pool = pool_alloconly_create("mdbox deleted storage", 2048);
storage = p_new(pool, struct mdbox_storage, 1);
storage->storage.v = mdbox_dbox_storage_vfuncs;
storage->storage.storage = mdbox_deleted_storage;
storage->storage.storage.pool = pool;
return &storage->storage.storage;
}
static struct mailbox *
mdbox_deleted_mailbox_alloc(struct mail_storage *storage,
struct mailbox_list *list,
const char *vname, enum mailbox_flags flags)
{
struct mdbox_mailbox *mbox;
pool_t pool;
flags |= MAILBOX_FLAG_READONLY | MAILBOX_FLAG_NO_INDEX_FILES;
pool = pool_alloconly_create("mdbox deleted mailbox", 1024*3);
mbox = p_new(pool, struct mdbox_mailbox, 1);
mbox->box = mdbox_deleted_mailbox;
mbox->box.pool = pool;
mbox->box.storage = storage;
mbox->box.list = list;
mbox->box.mail_vfuncs = &mdbox_mail_vfuncs;
index_storage_mailbox_alloc(&mbox->box, vname, flags, MAIL_INDEX_PREFIX);
mbox->storage = (struct mdbox_storage *)storage;
return &mbox->box;
}
static int
mdbox_deleted_mailbox_create_indexes(struct mailbox *box,
const struct mailbox_update *update,
struct mail_index_transaction *trans)
{
struct mdbox_mailbox *mbox = (struct mdbox_mailbox *)box;
struct mail_index_transaction *new_trans = NULL;
uint32_t uid_validity = ioloop_time;
uint32_t uid_next = 1;
if (update != NULL && update->uid_validity != 0)
uid_validity = update->uid_validity;
if (trans == NULL) {
new_trans = mail_index_transaction_begin(box->view, 0);
trans = new_trans;
}
mail_index_update_header(trans,
offsetof(struct mail_index_header, uid_validity),
&uid_validity, sizeof(uid_validity), TRUE);
mail_index_update_header(trans,
offsetof(struct mail_index_header, next_uid),
&uid_next, sizeof(uid_next), TRUE);
mbox->creating = TRUE;
mdbox_update_header(mbox, trans, update);
mbox->creating = FALSE;
if (new_trans != NULL) {
if (mail_index_transaction_commit(&new_trans) < 0) {
mailbox_set_index_error(box);
return -1;
}
}
return 0;
}
static const char *
mdbox_get_attachment_path_suffix(struct dbox_file *file ATTR_UNUSED)
{
return "";
}
static int
mdbox_deleted_mailbox_get_metadata(struct mailbox *box,
enum mailbox_metadata_items items,
struct mailbox_metadata *metadata_r)
{
if (index_mailbox_get_metadata(box, items, metadata_r) < 0)
return -1;
if ((items & MAILBOX_METADATA_GUID) != 0)
guid_128_generate(metadata_r->guid);
return 0;
}
static struct mail_save_context *
mdbox_deleted_save_alloc(struct mailbox_transaction_context *t)
{
struct mail_save_context *ctx;
ctx = i_new(struct mail_save_context, 1);
ctx->transaction = t;
return ctx;
}
static int
mdbox_deleted_save_begin(struct mail_save_context *ctx,
struct istream *input ATTR_UNUSED)
{
mail_storage_set_error(ctx->transaction->box->storage,
MAIL_ERROR_NOTPOSSIBLE, "mdbox_deleted doesn't support saving mails");
return -1;
}
static int
mdbox_deleted_save_continue(struct mail_save_context *ctx ATTR_UNUSED)
{
return -1;
}
static int mdbox_deleted_save_finish(struct mail_save_context *ctx)
{
index_save_context_free(ctx);
return -1;
}
static void
mdbox_deleted_save_cancel(struct mail_save_context *ctx)
{
index_save_context_free(ctx);
}
static int mdbox_deleted_sync(struct mdbox_mailbox *mbox,
enum mdbox_sync_flags flags ATTR_UNUSED)
{
struct mail_index_sync_ctx *index_sync_ctx;
struct mail_index_view *sync_view;
struct mail_index_transaction *trans;
struct mdbox_mail_index_record rec;
struct mdbox_map_mail_index_record map_rec;
enum mail_index_sync_flags sync_flags;
uint16_t refcount;
uint32_t map_seq, map_count, seq, uid = 0;
int ret = 0;
if (mbox->mdbox_deleted_synced) {
/* don't bother supporting incremental syncs */
return 0;
}
if (!mbox->box.inbox_user && mbox->box.name[0] != '\0') {
/* since mailbox list currently shows all the existing
mailboxes, we don't want all of them to list the deleted
messages. only show messages in user's INBOX or the
namespace prefix. */
return 0;
}
if (mdbox_map_open(mbox->storage->map) < 0)
return -1;
if (mdbox_deleted_mailbox_create_indexes(&mbox->box, NULL, NULL) < 0)
return -1;
i_zero(&rec);
rec.save_date = ioloop_time;
sync_flags = index_storage_get_sync_flags(&mbox->box);
if (mail_index_sync_begin(mbox->box.index, &index_sync_ctx,
&sync_view, &trans, sync_flags) < 0) {
mailbox_set_index_error(&mbox->box);
return -1;
}
map_count = mdbox_map_get_messages_count(mbox->storage->map);
for (map_seq = 1; map_seq <= map_count; map_seq++) {
if (mdbox_map_lookup_seq_full(mbox->storage->map, map_seq,
&map_rec, &refcount) < 0) {
ret = -1;
break;
}
if (refcount == 0) {
rec.map_uid = mdbox_map_lookup_uid(mbox->storage->map,
map_seq);
mail_index_append(trans, ++uid, &seq);
mail_index_update_ext(trans, seq,
mbox->ext_id, &rec, NULL);
}
}
if (ret < 0)
mail_index_sync_rollback(&index_sync_ctx);
else {
if (mail_index_sync_commit(&index_sync_ctx) < 0) {
mailbox_set_index_error(&mbox->box);
ret = -1;
} else {
mbox->mdbox_deleted_synced = TRUE;
}
}
return ret;
}
static struct mailbox_sync_context *
mdbox_deleted_storage_sync_init(struct mailbox *box,
enum mailbox_sync_flags flags)
{
struct mdbox_mailbox *mbox = (struct mdbox_mailbox *)box;
enum mdbox_sync_flags mdbox_sync_flags = 0;
int ret = 0;
if (!box->opened) {
if (mailbox_open(box) < 0)
ret = -1;
}
if (ret == 0 && (index_mailbox_want_full_sync(&mbox->box, flags) ||
mbox->storage->corrupted))
ret = mdbox_deleted_sync(mbox, mdbox_sync_flags);
return index_mailbox_sync_init(box, flags, ret < 0);
}
struct mail_storage mdbox_deleted_storage = {
.name = MDBOX_DELETED_STORAGE_NAME,
.class_flags = MAIL_STORAGE_CLASS_FLAG_UNIQUE_ROOT |
MAIL_STORAGE_CLASS_FLAG_HAVE_MAIL_GUIDS |
MAIL_STORAGE_CLASS_FLAG_HAVE_MAIL_SAVE_GUIDS |
MAIL_STORAGE_CLASS_FLAG_BINARY_DATA,
.v = {
mdbox_get_setting_parser_info,
mdbox_deleted_storage_alloc,
mdbox_storage_create,
mdbox_storage_destroy,
NULL,
dbox_storage_get_list_settings,
NULL,
mdbox_deleted_mailbox_alloc,
NULL,
NULL,
}
};
struct mailbox mdbox_deleted_mailbox = {
.v = {
index_storage_is_readonly,
index_storage_mailbox_enable,
index_storage_mailbox_exists,
mdbox_mailbox_open,
index_storage_mailbox_close,
index_storage_mailbox_free,
dbox_mailbox_create,
index_storage_mailbox_update,
index_storage_mailbox_delete,
index_storage_mailbox_rename,
index_storage_get_status,
mdbox_deleted_mailbox_get_metadata,
index_storage_set_subscribed,
index_storage_attribute_set,
index_storage_attribute_get,
index_storage_attribute_iter_init,
index_storage_attribute_iter_next,
index_storage_attribute_iter_deinit,
index_storage_list_index_has_changed,
index_storage_list_index_update_sync,
mdbox_deleted_storage_sync_init,
index_mailbox_sync_next,
index_mailbox_sync_deinit,
NULL,
dbox_notify_changes,
index_transaction_begin,
index_transaction_commit,
index_transaction_rollback,
NULL,
dbox_mail_alloc,
index_storage_search_init,
index_storage_search_deinit,
index_storage_search_next_nonblock,
index_storage_search_next_update_seq,
mdbox_deleted_save_alloc,
mdbox_deleted_save_begin,
mdbox_deleted_save_continue,
mdbox_deleted_save_finish,
mdbox_deleted_save_cancel,
mail_storage_copy,
NULL,
NULL,
NULL,
index_storage_is_inconsistent
}
};
struct dbox_storage_vfuncs mdbox_deleted_dbox_storage_vfuncs = {
mdbox_file_unrefed,
mdbox_file_create_fd,
mdbox_mail_open,
mdbox_deleted_mailbox_create_indexes,
mdbox_get_attachment_path_suffix,
mdbox_set_mailbox_corrupted,
mdbox_set_file_corrupted
};