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authorzautrix <zautrix>2004-07-03 16:33:12 (UTC)
committer zautrix <zautrix>2004-07-03 16:33:12 (UTC)
commite3b89230f065c48c84b48c88edb6eb088374c487 (patch) (side-by-side diff)
tree162ea2ef909a6f82ccfcedf45d80d6c821174912 /kmicromail/libetpan/generic/maildirdriver_cached_message.c
parent2dd6ac0b2d24c91d35ce674a6c26351352df2b15 (diff)
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Initial revision
Diffstat (limited to 'kmicromail/libetpan/generic/maildirdriver_cached_message.c') (more/less context) (ignore whitespace changes)
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diff --git a/kmicromail/libetpan/generic/maildirdriver_cached_message.c b/kmicromail/libetpan/generic/maildirdriver_cached_message.c
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+/*
+ * libEtPan! -- a mail stuff library
+ *
+ * Copyright (C) 2001, 2002 - DINH Viet Hoa
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the libEtPan! project nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * $Id$
+ */
+
+#include "maildirdriver_message.h"
+
+#include "mailmessage_tools.h"
+#include "maildirdriver.h"
+#include "maildir.h"
+#include "generic_cache.h"
+
+#include <unistd.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stdlib.h>
+
+static int prefetch(mailmessage * msg_info);
+
+static void prefetch_free(struct generic_message_t * msg);
+
+static int initialize(mailmessage * msg_info);
+
+static void check(mailmessage * msg_info);
+
+static mailmessage_driver local_maildir_cached_message_driver = {
+ .msg_name = "maildir-cached",
+
+ .msg_initialize = initialize,
+ .msg_uninitialize = mailmessage_generic_uninitialize,
+
+ .msg_flush = mailmessage_generic_flush,
+ .msg_check = check,
+
+ .msg_fetch_result_free = mailmessage_generic_fetch_result_free,
+
+ .msg_fetch = mailmessage_generic_fetch,
+ .msg_fetch_header = mailmessage_generic_fetch_header,
+ .msg_fetch_body = mailmessage_generic_fetch_header,
+ .msg_fetch_size = NULL,
+ .msg_get_bodystructure = mailmessage_generic_get_bodystructure,
+ .msg_fetch_section = mailmessage_generic_fetch_section,
+ .msg_fetch_section_header = mailmessage_generic_fetch_section_header,
+ .msg_fetch_section_mime = mailmessage_generic_fetch_section_mime,
+ .msg_fetch_section_body = mailmessage_generic_fetch_section_body,
+ .msg_fetch_envelope = mailmessage_generic_fetch_envelope,
+
+ .msg_get_flags = NULL,
+};
+
+mailmessage_driver * maildir_cached_message_driver =
+&local_maildir_cached_message_driver;
+
+struct maildir_msg_data {
+ int fd;
+};
+
+#if 0
+static inline struct maildir_cached_session_state_data *
+get_cached_session_data(mailmessage * msg)
+{
+ return msg->session->data;
+}
+
+static inline mailsession * cached_session_get_ancestor(mailsession * session)
+{
+ return get_data(session)->session;
+}
+
+static inline struct maildir_session_state_data *
+cached_session_get_ancestor_data(mailsession * session)
+{
+ return get_ancestor(session)->data;
+}
+
+static struct maildir * get_maildir_session(mailmessage * msg)
+{
+ return cached_session_get_ancestor_data(msg->session)->session;
+}
+#endif
+static inline struct maildir_cached_session_state_data *
+get_cached_session_data(mailmessage * msg)
+{
+ return msg->msg_session->sess_data;
+}
+
+static inline struct maildir_cached_session_state_data *
+cached_session_get_data(mailsession * s)
+{
+ return s->sess_data;
+}
+
+static inline mailsession * cached_session_get_ancestor(mailsession * s)
+{
+ return cached_session_get_data(s)->md_ancestor;
+}
+
+static inline struct maildir_session_state_data *
+cached_session_get_ancestor_data(mailsession * s)
+{
+ return cached_session_get_ancestor(s)->sess_data;
+}
+
+static inline struct maildir_session_state_data *
+get_session_ancestor_data(mailmessage * msg)
+{
+ return cached_session_get_ancestor_data(msg->msg_session);
+}
+
+static inline struct maildir *
+cached_session_get_maildir_session(mailsession * session)
+{
+ return cached_session_get_ancestor_data(session)->md_session;
+}
+
+static inline struct maildir * get_maildir_session(mailmessage * msg)
+{
+ return cached_session_get_maildir_session(msg->msg_session);
+}
+
+static int prefetch(mailmessage * msg_info)
+{
+ struct generic_message_t * msg;
+ int res;
+ struct maildir_msg_data * data;
+ char * filename;
+ int fd;
+ char * mapping;
+ struct maildir * md;
+
+ md = get_maildir_session(msg_info);
+
+ filename = maildir_message_get(md, msg_info->msg_uid);
+ if (filename == NULL) {
+ res = MAIL_ERROR_MEMORY;
+ goto err;
+ }
+
+ fd = open(filename, O_RDONLY);
+ free(filename);
+ if (fd == -1) {
+ res = MAIL_ERROR_FILE;
+ goto err;
+ }
+
+ mapping = mmap(NULL, msg_info->msg_size, PROT_READ, MAP_PRIVATE, fd, 0);
+ if (mapping == MAP_FAILED) {
+ res = MAIL_ERROR_FILE;
+ goto close;
+ }
+
+ data = malloc(sizeof(* data));
+ if (data == NULL) {
+ res = MAIL_ERROR_MEMORY;
+ goto unmap;
+ }
+
+ data->fd = fd;
+
+ msg = msg_info->msg_data;
+
+ msg->msg_data = data;
+ msg->msg_message = mapping;
+ msg->msg_length = msg_info->msg_size;
+
+ return MAIL_NO_ERROR;
+
+ unmap:
+ munmap(mapping, msg_info->msg_size);
+ close:
+ close(fd);
+ err:
+ return res;
+}
+
+static void prefetch_free(struct generic_message_t * msg)
+{
+ if (msg->msg_message != NULL) {
+ struct maildir_msg_data * data;
+
+ munmap(msg->msg_message, msg->msg_length);
+ msg->msg_message = NULL;
+ data = msg->msg_data;
+ close(data->fd);
+ free(data);
+ }
+}
+
+static int initialize(mailmessage * msg_info)
+{
+ struct generic_message_t * msg;
+ int r;
+
+ r = mailmessage_generic_initialize(msg_info);
+ if (r != MAIL_NO_ERROR)
+ return r;
+
+ msg = msg_info->msg_data;
+ msg->msg_prefetch = prefetch;
+ msg->msg_prefetch_free = prefetch_free;
+
+ return MAIL_NO_ERROR;
+}
+
+static void check(mailmessage * msg_info)
+{
+ int r;
+
+ if (msg_info->msg_flags != NULL) {
+ r = mail_flags_store_set(get_session_ancestor_data(msg_info)->md_flags_store, msg_info);
+
+ r = mail_flags_store_set(get_cached_session_data(msg_info)->md_flags_store, msg_info);
+ /* ignore errors */
+ }
+}