index-status.c revision 4b4aabb44db8d395e27265db137eab876f3de6b5
/* Copyright (c) 2002-2011 Dovecot authors, see the included COPYING file */
#include "lib.h"
#include "array.h"
#include "mail-cache.h"
#include "mail-search-build.h"
#include "index-storage.h"
#include "mail-index-modseq.h"
int index_storage_get_status(struct mailbox *box,
enum mailbox_status_items items,
struct mailbox_status *status_r)
{
const struct mail_index_header *hdr;
memset(status_r, 0, sizeof(struct mailbox_status));
if (!box->opened) {
if (mailbox_open(box) < 0)
return -1;
if (mailbox_sync(box, 0) < 0)
return -1;
}
/* we can get most of the status items without any trouble */
hdr = mail_index_get_header(box->view);
status_r->messages = hdr->messages_count;
if ((items & STATUS_RECENT) != 0) {
/* make sure recent count is set, in case syncing hasn't
been done yet */
index_sync_update_recent_count(box);
status_r->recent = index_mailbox_get_recent_count(box);
i_assert(status_r->recent <= status_r->messages);
}
status_r->unseen = hdr->messages_count - hdr->seen_messages_count;
status_r->uidvalidity = hdr->uid_validity;
status_r->uidnext = hdr->next_uid;
status_r->first_recent_uid = hdr->first_recent_uid;
status_r->nonpermanent_modseqs = mail_index_is_in_memory(box->index);
if ((items & STATUS_HIGHESTMODSEQ) != 0) {
status_r->highest_modseq =
mail_index_modseq_get_highest(box->view);
if (status_r->highest_modseq == 0) {
/* modseqs not enabled yet, but we can't return 0 */
status_r->highest_modseq = 1;
}
}
if ((items & STATUS_FIRST_UNSEEN_SEQ) != 0) {
mail_index_lookup_first(box->view, 0, MAIL_SEEN,
&status_r->first_unseen_seq);
}
if ((items & STATUS_KEYWORDS) != 0)
status_r->keywords = mail_index_get_keywords(box->index);
if ((items & STATUS_PERMANENT_FLAGS) != 0) {
if (!mailbox_is_readonly(box)) {
status_r->permanent_flags = MAIL_FLAGS_NONRECENT;
status_r->permanent_keywords = TRUE;
/* FIXME: set to FALSE if we're full */
status_r->allow_new_keywords = TRUE;
}
}
return 0;
}
static void
get_metadata_cache_fields(struct mailbox *box,
struct mailbox_metadata *metadata_r)
{
const struct mail_cache_field *fields;
enum mail_cache_decision_type dec;
ARRAY_TYPE(const_string) *cache_fields;
unsigned int i, count;
fields = mail_cache_register_get_list(box->cache,
pool_datastack_create(), &count);
cache_fields = t_new(ARRAY_TYPE(const_string), 1);
t_array_init(cache_fields, count);
for (i = 0; i < count; i++) {
dec = fields[i].decision & ~MAIL_CACHE_DECISION_FORCED;
if (dec != MAIL_CACHE_DECISION_NO)
array_append(cache_fields, &fields[i].name, 1);
}
metadata_r->cache_fields = cache_fields;
}
static int
virtual_size_add_new(struct mailbox *box,
struct index_vsize_header *vsize_hdr)
{
struct index_mailbox_context *ibox = INDEX_STORAGE_CONTEXT(box);
const struct mail_index_header *hdr;
struct mailbox_transaction_context *trans;
struct mail_search_context *search_ctx;
struct mail_search_args *search_args;
struct mail *mail;
uint32_t seq1, seq2;
uoff_t vsize;
int ret = 0;
hdr = mail_index_get_header(box->view);
if (vsize_hdr->highest_uid == 0)
seq2 = 0;
else if (!mail_index_lookup_seq_range(box->view, 1,
vsize_hdr->highest_uid,
&seq1, &seq2))
seq2 = 0;
if (vsize_hdr->message_count != seq2) {
if (vsize_hdr->message_count < seq2) {
mail_storage_set_critical(box->storage,
"vsize-hdr has invalid message-count (%u < %u)",
vsize_hdr->message_count, seq2);
} else {
/* some messages have been expunged, rescan */
}
memset(vsize_hdr, 0, sizeof(*vsize_hdr));
seq2 = 0;
}
search_args = mail_search_build_init();
mail_search_build_add_seqset(search_args, seq2 + 1,
hdr->messages_count);
trans = mailbox_transaction_begin(box, 0);
search_ctx = mailbox_search_init(trans, search_args, NULL,
MAIL_FETCH_VIRTUAL_SIZE, NULL);
while (mailbox_search_next(search_ctx, &mail)) {
if (mail_get_virtual_size(mail, &vsize) < 0) {
if (mail->expunged)
continue;
ret = -1;
break;
}
vsize_hdr->vsize += vsize;
vsize_hdr->highest_uid = mail->uid;
vsize_hdr->message_count++;
}
if (mailbox_search_deinit(&search_ctx) < 0)
ret = -1;
if (ret == 0) {
/* success, cache all */
vsize_hdr->highest_uid = hdr->next_uid - 1;
} else {
/* search failed, cache only up to highest seen uid */
}
mail_index_update_header_ext(trans->itrans, ibox->vsize_hdr_ext_id,
0, vsize_hdr, sizeof(*vsize_hdr));
(void)mailbox_transaction_commit(&trans);
return ret;
}
static int
get_metadata_virtual_size(struct mailbox *box,
struct mailbox_metadata *metadata_r)
{
struct index_mailbox_context *ibox = INDEX_STORAGE_CONTEXT(box);
struct index_vsize_header vsize_hdr;
struct mailbox_status status;
const void *data;
size_t size;
int ret;
mailbox_get_open_status(box, STATUS_MESSAGES | STATUS_UIDNEXT, &status);
mail_index_get_header_ext(box->view, ibox->vsize_hdr_ext_id,
&data, &size);
if (size == sizeof(vsize_hdr))
memcpy(&vsize_hdr, data, sizeof(vsize_hdr));
else {
if (size != 0) {
mail_storage_set_critical(box->storage,
"vsize-hdr has invalid size: %"PRIuSIZE_T,
size);
}
memset(&vsize_hdr, 0, sizeof(vsize_hdr));
}
if (vsize_hdr.highest_uid + 1 == status.uidnext &&
vsize_hdr.message_count == status.messages) {
/* up to date */
metadata_r->virtual_size = vsize_hdr.vsize;
return 0;
}
if (vsize_hdr.highest_uid >= status.uidnext) {
mail_storage_set_critical(box->storage,
"vsize-hdr has invalid highest-uid (%u >= %u)",
vsize_hdr.highest_uid, status.uidnext);
memset(&vsize_hdr, 0, sizeof(vsize_hdr));
}
ret = virtual_size_add_new(box, &vsize_hdr);
metadata_r->virtual_size = vsize_hdr.vsize;
return ret;
}
int index_mailbox_get_metadata(struct mailbox *box,
enum mailbox_metadata_items items,
struct mailbox_metadata *metadata_r)
{
if ((items & MAILBOX_METADATA_CACHE_FIELDS) != 0)
get_metadata_cache_fields(box, metadata_r);
if ((items & MAILBOX_METADATA_VIRTUAL_SIZE) != 0) {
if (get_metadata_virtual_size(box, metadata_r) < 0)
return -1;
}
return 0;
}