cydir-sync.c revision c6a57378d3c54988f525f81e19c0c5d132a0770d
/* Copyright (C) 2007 Timo Sirainen */
#include "lib.h"
#include "ioloop.h"
#include "str.h"
#include "cydir-storage.h"
#include "cydir-sync.h"
static int cydir_sync_set_uidvalidity(struct cydir_sync_context *ctx)
{
struct mail_index_transaction *trans;
uint32_t uid_validity = ioloop_time;
uint32_t seq;
uoff_t offset;
trans = mail_index_transaction_begin(ctx->sync_view, FALSE, TRUE);
mail_index_update_header(trans,
offsetof(struct mail_index_header, uid_validity),
&uid_validity, sizeof(uid_validity), TRUE);
if (mail_index_transaction_commit(&trans, &seq, &offset) < 0) {
mail_storage_set_index_error(&ctx->mbox->ibox);
return -1;
}
return 0;
}
static string_t *cydir_get_path_prefix(struct cydir_mailbox *mbox)
{
string_t *path = t_str_new(256);
const char *dir;
dir = mailbox_list_get_path(STORAGE(mbox->storage)->list,
mbox->ibox.box.name,
MAILBOX_LIST_PATH_TYPE_MAILBOX);
str_append(path, dir);
str_append_c(path, '/');
return path;
}
static int cydir_sync_index(struct cydir_sync_context *ctx)
{
const struct mail_index_header *hdr;
struct mail_index_sync_rec sync_rec;
string_t *path = NULL;
unsigned int prefix_len = 0;
uint32_t seq1, seq2, uid;
int ret;
hdr = mail_index_get_header(ctx->sync_view);
if (hdr->uid_validity == 0) {
if (cydir_sync_set_uidvalidity(ctx) < 0)
return -1;
}
/* unlink expunged messages */
while ((ret = mail_index_sync_next(ctx->index_sync_ctx,
&sync_rec)) > 0) {
if (sync_rec.type != MAIL_INDEX_SYNC_TYPE_EXPUNGE)
continue;
if (mail_index_lookup_uid_range(ctx->sync_view,
sync_rec.uid1, sync_rec.uid2,
&seq1, &seq2) < 0) {
mail_storage_set_index_error(&ctx->mbox->ibox);
return -1;
}
if (seq1 == 0) {
/* already expunged everything. nothing to do. */
continue;
}
if (path == NULL) {
path = cydir_get_path_prefix(ctx->mbox);
prefix_len = str_len(path);
}
for (; seq1 <= seq2; seq1++) {
if (mail_index_lookup_uid(ctx->sync_view, seq1,
&uid) < 0) {
mail_storage_set_index_error(&ctx->mbox->ibox);
return -1;
}
str_truncate(path, prefix_len);
str_printfa(path, "%u.", uid);
if (unlink(str_c(path)) < 0 && errno != ENOENT) {
mail_storage_set_critical(
STORAGE(ctx->mbox->storage),
"unlink(%s) failed: %m", str_c(path));
/* continue anyway */
}
}
}
return 0;
}
int cydir_sync_begin(struct cydir_mailbox *mbox,
struct cydir_sync_context **ctx_r)
{
struct cydir_sync_context *ctx;
int ret;
ctx = i_new(struct cydir_sync_context, 1);
ctx->mbox = mbox;
ret = mail_index_sync_begin(mbox->ibox.index, &ctx->index_sync_ctx,
&ctx->sync_view, (uint32_t)-1, (uoff_t)-1,
!mbox->ibox.keep_recent, TRUE);
if (ret <= 0) {
if (ret < 0)
mail_storage_set_index_error(&mbox->ibox);
i_free(ctx);
return ret;
}
if (cydir_sync_index(ctx) < 0) {
mail_index_sync_rollback(&ctx->index_sync_ctx);
i_free(ctx);
return -1;
}
*ctx_r = ctx;
return 0;
}
int cydir_sync_finish(struct cydir_sync_context **_ctx, bool success)
{
struct cydir_sync_context *ctx = *_ctx;
int ret = success ? 0 : -1;
*_ctx = NULL;
if (success) {
if (mail_index_sync_commit(&ctx->index_sync_ctx) < 0) {
mail_storage_set_index_error(&ctx->mbox->ibox);
ret = -1;
}
} else {
mail_index_sync_rollback(&ctx->index_sync_ctx);
}
i_free(ctx);
return 0;
}
int cydir_sync(struct cydir_mailbox *mbox)
{
struct cydir_sync_context *sync_ctx;
if (cydir_sync_begin(mbox, &sync_ctx) < 0)
return -1;
return cydir_sync_finish(&sync_ctx, TRUE);
}
struct mailbox_sync_context *
cydir_storage_sync_init(struct mailbox *box, enum mailbox_sync_flags flags)
{
struct cydir_mailbox *mbox = (struct cydir_mailbox *)box;
int ret = 0;
if (!box->opened)
index_storage_mailbox_open(&mbox->ibox);
if ((flags & MAILBOX_SYNC_FLAG_FAST) == 0 ||
mbox->ibox.sync_last_check + MAILBOX_FULL_SYNC_INTERVAL <=
ioloop_time)
ret = cydir_sync(mbox);
return index_mailbox_sync_init(box, flags, ret < 0);
}