static int maildir_mail_get_physical_size(struct mail *_mail, uoff_t *size_r)
{
struct index_mail *mail = (struct index_mail *)_mail;
struct maildir_mailbox *mbox = (struct maildir_mailbox *)_mail->box;
struct index_mail_data *data = &mail->data;
struct stat st;
const char *path;
int ret;
if (maildir_uidlist_is_read(mbox->uidlist) ||
(_mail->box->flags & MAILBOX_FLAG_POP3_SESSION) != 0) {
/* try to get the size from uidlist (see virtual size above) */
if (maildir_quick_size_lookup(mail, FALSE,
&data->physical_size) < 0)
return -1;
}
if (data->physical_size == (uoff_t)-1) {
if (index_mail_get_physical_size(_mail, size_r) == 0) {
i_assert(mail->data.physical_size != (uoff_t)-1);
maildir_handle_size_caching(mail, TRUE, FALSE);
return 0;
}
if (maildir_quick_size_lookup(mail, FALSE,
&data->physical_size) < 0)
return -1;
}
if (data->physical_size != (uoff_t)-1) {
data->dont_cache_fetch_fields |= MAIL_FETCH_PHYSICAL_SIZE;
*size_r = data->physical_size;
return 0;
}
if (!_mail->saving) {
ret = maildir_file_do(mbox, _mail->uid, do_stat, &st);
if (ret <= 0) {
if (ret == 0)
mail_set_expunged(_mail);
return -1;
}
} else {
/* saved mail which hasn't been committed yet */
path = maildir_save_file_get_path(_mail->transaction,
_mail->seq);
if (stat(path, &st) < 0) {
mail_storage_set_critical(_mail->box->storage,
"stat(%s) failed: %m", path);
return -1;
}
}
data->physical_size = st.st_size;
maildir_handle_size_caching(mail, FALSE, FALSE);
*size_r = st.st_size;
return 0;
}
static int maildir_mail_stat(struct mail *mail, struct stat *st_r)
{
struct maildir_mailbox *mbox = (struct maildir_mailbox *)mail->box;
struct index_mail *imail = (struct index_mail *)mail;
const char *path;
int fd, ret;
if (mail->lookup_abort == MAIL_LOOKUP_ABORT_NOT_IN_CACHE) {
mail_set_aborted(mail);
return -1;
}
if (imail->data.access_part != 0 &&
imail->data.stream == NULL) {
/* we're going to open the mail anyway */
struct istream *input;
(void)mail_get_stream(mail, NULL, NULL, &input);
}
if (imail->data.stream != NULL &&
(fd = i_stream_get_fd(imail->data.stream)) != -1) {
mail->transaction->stats.fstat_lookup_count++;
if (fstat(fd, st_r) < 0) {
mail_storage_set_critical(mail->box->storage,
"fstat(%s) failed: %m",
i_stream_get_name(imail->data.stream));
return -1;
}
} else if (!mail->saving) {
mail->transaction->stats.stat_lookup_count++;
ret = maildir_file_do(mbox, mail->uid, do_stat, st_r);
if (ret <= 0) {
if (ret == 0)
mail_set_expunged(mail);
return -1;
}
} else {
mail->transaction->stats.stat_lookup_count++;
path = maildir_save_file_get_path(mail->transaction, mail->seq);
if (stat(path, st_r) < 0) {
mail_storage_set_critical(mail->box->storage,
"stat(%s) failed: %m", path);
return -1;
}
}
return 0;
}
static struct istream *
maildir_open_mail(struct maildir_mailbox *mbox, struct mail *mail,
bool *deleted_r)
{
struct istream *input;
const char *path;
struct maildir_open_context ctx;
*deleted_r = FALSE;
ctx.fd = -1;
ctx.path = NULL;
mail->transaction->stats.open_lookup_count++;
if (!mail->saving) {
if (maildir_file_do(mbox, mail->uid, do_open, &ctx) < 0)
return NULL;
} else {
path = maildir_save_file_get_path(mail->transaction, mail->seq);
if (do_open(mbox, path, &ctx) <= 0)
return NULL;
}
if (ctx.fd == -1) {
*deleted_r = TRUE;
return NULL;
}
input = i_stream_create_fd_autoclose(&ctx.fd, 0);
if (input->stream_errno == EISDIR) {
i_stream_destroy(&input);
if (maildir_lose_unexpected_dir(&mbox->storage->storage,
ctx.path) >= 0)
*deleted_r = TRUE;
} else {
i_stream_set_name(input, ctx.path);
index_mail_set_read_buffer_size(mail, input);
}
i_free(ctx.path);
return input;
}
static int maildir_quick_size_lookup(struct index_mail *mail, bool vsize,
uoff_t *size_r)
{
struct mail *_mail = &mail->mail.mail;
struct maildir_mailbox *mbox = (struct maildir_mailbox *)_mail->box;
enum maildir_uidlist_rec_ext_key key;
const char *path, *fname, *value;
if (!_mail->saving) {
if (maildir_mail_get_fname(mbox, _mail, &fname) <= 0)
return -1;
} else {
if (maildir_save_file_get_size(_mail->transaction, _mail->seq,
vsize, size_r) == 0)
return 1;
path = maildir_save_file_get_path(_mail->transaction,
_mail->seq);
fname = strrchr(path, '/');
fname = fname != NULL ? fname + 1 : path;
}
/* size can be included in filename */
if (vsize || !mbox->storage->set->maildir_broken_filename_sizes) {
if (maildir_filename_get_size(fname,
vsize ? MAILDIR_EXTRA_VIRTUAL_SIZE :
MAILDIR_EXTRA_FILE_SIZE, size_r))
return 1;
}
/* size can be included in uidlist entry */
if (!_mail->saving) {
key = vsize ? MAILDIR_UIDLIST_REC_EXT_VSIZE :
MAILDIR_UIDLIST_REC_EXT_PSIZE;
value = maildir_uidlist_lookup_ext(mbox->uidlist, _mail->uid,
key);
if (value != NULL && str_to_uoff(value, size_r) == 0)
return 1;
}
return 0;
}
static int
maildir_mail_get_special(struct mail *_mail, enum mail_fetch_field field,
const char **value_r)
{
struct index_mail *mail = (struct index_mail *)_mail;
struct maildir_mailbox *mbox = (struct maildir_mailbox *)_mail->box;
const char *path, *fname = NULL, *end, *guid, *uidl, *order;
struct stat st;
switch (field) {
case MAIL_FETCH_GUID:
/* use GUID from uidlist if it exists */
i_assert(!_mail->saving);
if (mail->data.guid != NULL) {
*value_r = mail->data.guid;
return 0;
}
/* first make sure that we have a refreshed uidlist */
if (maildir_mail_get_fname(mbox, _mail, &fname) <= 0)
return -1;
guid = maildir_uidlist_lookup_ext(mbox->uidlist, _mail->uid,
MAILDIR_UIDLIST_REC_EXT_GUID);
if (guid != NULL) {
if (*guid != '\0') {
*value_r = mail->data.guid =
p_strdup(mail->mail.data_pool, guid);
return 0;
}
mail_storage_set_critical(_mail->box->storage,
"Maildir %s: Corrupted dovecot-uidlist: "
"UID %u had empty GUID, clearing it",
mailbox_get_path(_mail->box), _mail->uid);
maildir_uidlist_unset_ext(mbox->uidlist, _mail->uid,
MAILDIR_UIDLIST_REC_EXT_GUID);
}
/* default to base filename: */
if (maildir_mail_get_special(_mail, MAIL_FETCH_STORAGE_ID,
value_r) < 0)
return -1;
mail->data.guid = mail->data.filename;
return 0;
case MAIL_FETCH_STORAGE_ID:
if (mail->data.filename != NULL) {
*value_r = mail->data.filename;
return 0;
}
if (fname != NULL) {
/* we came here from MAIL_FETCH_GUID,
avoid a second lookup */
} else if (!_mail->saving) {
if (maildir_mail_get_fname(mbox, _mail, &fname) <= 0)
return -1;
} else {
path = maildir_save_file_get_path(_mail->transaction,
_mail->seq);
fname = strrchr(path, '/');
fname = fname != NULL ? fname + 1 : path;
}
end = strchr(fname, MAILDIR_INFO_SEP);
mail->data.filename = end == NULL ?
p_strdup(mail->mail.data_pool, fname) :
p_strdup_until(mail->mail.data_pool, fname, end);
*value_r = mail->data.filename;
return 0;
case MAIL_FETCH_UIDL_BACKEND:
uidl = maildir_uidlist_lookup_ext(mbox->uidlist, _mail->uid,
MAILDIR_UIDLIST_REC_EXT_POP3_UIDL);
if (uidl == NULL) {
/* use the default */
*value_r = "";
} else if (*uidl == '\0') {
/* special optimization case: use the base file name */
return maildir_mail_get_special(_mail,
MAIL_FETCH_STORAGE_ID, value_r);
} else {
*value_r = p_strdup(mail->mail.data_pool, uidl);
}
return 0;
case MAIL_FETCH_POP3_ORDER:
order = maildir_uidlist_lookup_ext(mbox->uidlist, _mail->uid,
MAILDIR_UIDLIST_REC_EXT_POP3_ORDER);
if (order == NULL) {
*value_r = "";
} else {
*value_r = p_strdup(mail->mail.data_pool, order);
}
return 0;
case MAIL_FETCH_REFCOUNT:
if (maildir_mail_stat(_mail, &st) < 0)
return -1;
*value_r = p_strdup_printf(mail->mail.data_pool, "%lu",
(unsigned long)st.st_nlink);
return 0;
default:
return index_mail_get_special(_mail, field, value_r);
}
}