Пример #1
0
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;
}
Пример #2
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;
}
Пример #3
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;
}
Пример #4
0
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;
}
Пример #5
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);
	}
}