1 files changed, 308 insertions, 0 deletions

diff --git a/libetpan/src/driver/implementation/db/dbdriver_message.c b/libetpan/src/driver/implementation/db/dbdriver_message.c
new file mode 100644
index 0000000..70e9dca
--- a/dev/null
+++ b/libetpan/src/driver/implementation/db/dbdriver_message.c
@@ -0,0 +1,308 @@
+/*
+ * libEtPan! -- a mail stuff library
+ *
+ * Copyright (C) 2001, 2005 - 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 AUTHORS 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 AUTHORS 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 "dbdriver_message.h"
+#include "dbdriver.h"
+#include "mail_cache_db.h"
+
+#include "mailmessage_tools.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 fetch_envelope(mailmessage * msg_info,
+    struct mailimf_fields ** result);
+
+static int get_flags(mailmessage * msg_info,
+    struct mail_flags ** result);
+
+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_db_message_driver = {
+  .msg_name = "db",
+
+  .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 = fetch_envelope,
+
+  .msg_get_flags = get_flags,
+};
+
+mailmessage_driver * db_message_driver = &local_db_message_driver;
+
+struct db_msg_data {
+  MMAPString * msg_content;
+};
+
+static inline struct db_session_state_data *
+get_session_data(mailmessage * msg)
+{
+  return msg->msg_session->sess_data;
+}
+
+static int prefetch(mailmessage * msg_info)
+{
+  struct generic_message_t * msg;
+  int res;
+  struct db_msg_data * data;
+  struct db_session_state_data * sess_data;
+  MMAPString * msg_content;
+  struct mail_cache_db * maildb;
+  int r;
+  char key[PATH_MAX];
+  void * msg_data;
+  size_t msg_data_len;
+  
+  sess_data = get_session_data(msg_info);
+  
+  r = mail_cache_db_open_lock(sess_data->db_filename, &maildb);
+  if (r < 0) {
+    res = MAIL_ERROR_FILE;
+    goto err;
+  }
+  
+  snprintf(key, sizeof(key), "%lu", (unsigned long) msg_info->msg_index);
+  r = mail_cache_db_get(maildb, key, strlen(key), &msg_data, &msg_data_len);
+  if (r < 0) {
+    res = MAIL_ERROR_MSG_NOT_FOUND;
+    goto close_db;
+  }
+  
+  msg_content = mmap_string_new_len(msg_data, msg_data_len);
+  if (msg_content == NULL) {
+    res = MAIL_ERROR_MEMORY;
+    goto close_db;
+  }
+  
+  data = malloc(sizeof(* data));
+  if (data == NULL) {
+    res = MAIL_ERROR_MEMORY;
+    goto free_mmapstr;
+  }
+  
+  data->msg_content = msg_content;
+  
+  msg = msg_info->msg_data;
+  
+  msg->msg_data = data;
+  msg->msg_message = msg_content->str;
+  msg->msg_length = msg_content->len;
+  
+  mail_cache_db_close_unlock(sess_data->db_filename, maildb);
+  
+  return MAIL_NO_ERROR;
+  
+ free_mmapstr:
+  mmap_string_free(msg_content);
+ close_db:
+  mail_cache_db_close_unlock(sess_data->db_filename, maildb);
+ err:
+  return res;
+}
+
+static void prefetch_free(struct generic_message_t * msg)
+{
+  if (msg->msg_message != NULL) {
+    struct db_msg_data * data;
+    
+    data = msg->msg_data;
+    mmap_string_free(data->msg_content);
+    data->msg_content = NULL;
+    free(data);
+    msg->msg_message = NULL;
+  }
+}
+
+static int initialize(mailmessage * msg_info)
+{
+  struct generic_message_t * msg;
+  int r;
+  char key[PATH_MAX];
+
+  snprintf(key, sizeof(key), "%lu", (unsigned long) msg_info->msg_index);
+  msg_info->msg_uid = strdup(key);
+  if (msg_info->msg_uid == NULL)
+    return MAIL_ERROR_MEMORY;
+  
+  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_data(msg_info)->db_flags_store,
+        msg_info);
+    /* ignore errors */
+  }
+}
+
+static int fetch_envelope(mailmessage * msg_info,
+    struct mailimf_fields ** result)
+{
+  char key[PATH_MAX];
+  int r;
+  struct db_session_state_data * sess_data;
+  struct mail_cache_db * maildb;
+  int res;
+  struct mailimf_fields * fields;
+  MMAPString * mmapstr;
+  
+  sess_data = get_session_data(msg_info);
+  
+  r = mail_cache_db_open_lock(sess_data->db_filename, &maildb);
+  if (r < 0) {
+    res = MAIL_ERROR_FILE;
+    goto err;
+  }
+  
+  snprintf(key, sizeof(key), "%lu-envelope",
+      (unsigned long) msg_info->msg_index);
+  
+  mmapstr = mmap_string_new("");
+  if (mmapstr == NULL) {
+    res = MAIL_ERROR_MEMORY;
+    goto close_db;
+  }
+  
+  r = generic_cache_fields_read(maildb, mmapstr,
+    key, &fields);
+  
+  mmap_string_free(mmapstr);
+  
+  if (r != MAIL_NO_ERROR) {
+    res = MAIL_ERROR_MSG_NOT_FOUND;
+    goto close_db;
+  }
+  
+  mail_cache_db_close_unlock(sess_data->db_filename, maildb);
+  
+  * result = fields;
+  
+  return MAIL_NO_ERROR;
+  
+ close_db:
+  mail_cache_db_close_unlock(sess_data->db_filename, maildb);
+ err:
+  return res;
+}
+
+static int get_flags(mailmessage * msg_info,
+    struct mail_flags ** result)
+{
+  char key[PATH_MAX];
+  int r;
+  struct db_session_state_data * sess_data;
+  struct mail_cache_db * maildb;
+  int res;
+  MMAPString * mmapstr;
+  
+  sess_data = get_session_data(msg_info);
+  
+  r = mail_cache_db_open_lock(sess_data->db_filename, &maildb);
+  if (r < 0) {
+    res = MAIL_ERROR_FILE;
+    goto err;
+  }
+  
+  snprintf(key, sizeof(key), "%lu-flags", (unsigned long) msg_info->msg_index);
+  
+  mmapstr = mmap_string_new("");
+  if (mmapstr == NULL) {
+    res = MAIL_ERROR_MEMORY;
+    goto close_db;
+  }
+  
+  r = generic_cache_flags_read(maildb, mmapstr,
+    key, &msg_info->msg_flags);
+  
+  mmap_string_free(mmapstr);
+  
+  if (r != MAIL_NO_ERROR) {
+    msg_info->msg_flags = mail_flags_new_empty();
+    if (msg_info->msg_flags == NULL) {
+      res = MAIL_ERROR_MEMORY;
+      goto close_db;
+    }
+  }
+  
+  mail_cache_db_close_unlock(sess_data->db_filename, maildb);
+  
+  * result = msg_info->msg_flags;
+  
+  return MAIL_NO_ERROR;
+  
+ close_db:
+  mail_cache_db_close_unlock(sess_data->db_filename, maildb);
+ err:
+  return res;
+}
+