1 files changed, 664 insertions, 0 deletions

diff --git a/libetpan/src/driver/implementation/imap/imapdriver_cached_message.c b/libetpan/src/driver/implementation/imap/imapdriver_cached_message.c
new file mode 100644
index 0000000..34e1ca3
--- a/dev/null
+++ b/libetpan/src/driver/implementation/imap/imapdriver_cached_message.c
@@ -0,0 +1,664 @@
+/*
+ * 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 "imapdriver_cached_message.h"
+
+#include "imapdriver_tools.h"
+#include "imapdriver_message.h"
+#include "imapdriver_cached.h"
+#include "imapdriver_types.h"
+#include "imapdriver.h"
+#include "mailmessage.h"
+#include "generic_cache.h"
+#include "mail_cache_db.h"
+
+#include <string.h>
+#include <stdlib.h>
+
+static int imap_initialize(mailmessage * msg_info);
+
+static void imap_uninitialize(mailmessage * msg_info);
+
+static void imap_flush(mailmessage * msg_info);
+
+static void imap_check(mailmessage * msg_info);
+
+static void imap_fetch_result_free(mailmessage * msg_info,
+                                   char * msg);
+
+static int imap_fetch(mailmessage * msg_info,
+                      char ** result,
+                      size_t * result_len);
+
+static int imap_fetch_header(mailmessage * msg_info,
+                             char ** result,
+                             size_t * result_len);
+
+static int imap_fetch_body(mailmessage * msg_info,
+                           char ** result, size_t * result_len);
+
+static int imap_fetch_size(mailmessage * msg_info,
+                           size_t * result);
+
+static int imap_get_bodystructure(mailmessage * msg_info,
+                                  struct mailmime ** result);
+
+static int imap_fetch_section(mailmessage * msg_info,
+                              struct mailmime * mime,
+                              char ** result, size_t * result_len);
+
+static int imap_fetch_section_header(mailmessage * msg_info,
+                                     struct mailmime * mime,
+                                     char ** result,
+                                     size_t * result_len);
+
+static int imap_fetch_section_mime(mailmessage * msg_info,
+                                   struct mailmime * mime,
+                                   char ** result,
+                                   size_t * result_len);
+
+static int imap_fetch_section_body(mailmessage * msg_info,
+                                   struct mailmime * mime,
+                                   char ** result,
+                                   size_t * result_len);
+
+
+static int imap_fetch_envelope(mailmessage * msg_info,
+                               struct mailimf_fields ** result);
+
+static int imap_get_flags(mailmessage * msg_info,
+                          struct mail_flags ** result);
+
+static mailmessage_driver local_imap_cached_message_driver = {
+  .msg_name = "imap-cached",
+
+  .msg_initialize = imap_initialize,
+  .msg_uninitialize = imap_uninitialize,
+
+  .msg_flush = imap_flush,
+  .msg_check = imap_check,
+
+  .msg_fetch_result_free = imap_fetch_result_free,
+
+  .msg_fetch = imap_fetch,
+  .msg_fetch_header = imap_fetch_header,
+  .msg_fetch_body = imap_fetch_body,
+  .msg_fetch_size = imap_fetch_size,
+  .msg_get_bodystructure = imap_get_bodystructure,
+  .msg_fetch_section = imap_fetch_section,
+  .msg_fetch_section_header = imap_fetch_section_header,
+  .msg_fetch_section_mime = imap_fetch_section_mime,
+  .msg_fetch_section_body = imap_fetch_section_body,
+  .msg_fetch_envelope = imap_fetch_envelope,
+
+  .msg_get_flags = imap_get_flags,
+};
+
+mailmessage_driver * imap_cached_message_driver =
+&local_imap_cached_message_driver;
+
+static inline struct imap_cached_session_state_data *
+get_cached_session_data(mailmessage * msg)
+{
+  return msg->msg_session->sess_data;
+}
+
+static inline mailmessage * get_ancestor(mailmessage * msg_info)
+{
+  return msg_info->msg_data;
+}
+
+static inline struct imap_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)->imap_ancestor;
+}
+
+static inline struct imap_session_state_data *
+cached_session_get_ancestor_data(mailsession * s)
+{
+  return cached_session_get_ancestor(s)->sess_data;
+}
+
+static inline mailimap *
+cached_session_get_imap_session(mailsession * session)
+{
+  return cached_session_get_ancestor_data(session)->imap_session;
+}
+
+static inline mailimap * get_imap_session(mailmessage * msg)
+{
+  return cached_session_get_imap_session(msg->msg_session);
+}
+
+static inline mailsession * get_ancestor_session(mailmessage * msg_info)
+{
+  return cached_session_get_ancestor(msg_info->msg_session);
+}
+
+
+static void generate_key_from_mime_section(char * key, size_t size,
+                                           struct mailmime * mime)
+{
+  clistiter * cur;
+  MMAPString * gstr;
+  struct mailmime_section * part;
+  int r;
+
+  snprintf(key, size, "unvalid");
+
+  r = mailmime_get_section_id(mime, &part);
+  if (r != MAILIMF_NO_ERROR)
+    goto err;
+
+  gstr = mmap_string_new("part");
+  if (gstr == NULL)
+    goto free_section;
+
+  for(cur = clist_begin(part->sec_list) ;
+      cur != NULL ; cur = clist_next(cur)) {
+    char s[20];
+
+    snprintf(s, 20, ".%u", * (uint32_t *) clist_content(cur));
+    if (mmap_string_append(gstr, s) == NULL)
+      goto free_str;
+  }
+
+  snprintf(key, size, "%s", gstr->str);
+
+  mmap_string_free(gstr);
+  mailmime_section_free(part);
+
+  return;
+
+ free_str:
+  mmap_string_free(gstr);
+ free_section:
+  mailmime_section_free(part);
+ err:;
+}
+
+static void generate_key_from_section(char * key, size_t size,
+                                      mailmessage * msg_info,
+                                      struct mailmime * mime, int type)
+{
+  char section_str[PATH_MAX];
+
+  generate_key_from_mime_section(section_str, PATH_MAX, mime);
+
+  switch (type) {
+  case IMAP_SECTION_MESSAGE:
+    snprintf(key, size, "%s-%s", msg_info->msg_uid, section_str);
+    break;
+  case IMAP_SECTION_HEADER:
+    snprintf(key, size, "%s-%s-header", msg_info->msg_uid, section_str);
+    break;
+  case IMAP_SECTION_MIME:
+    snprintf(key, size, "%s-%s-mime", msg_info->msg_uid, section_str);
+    break;
+  case IMAP_SECTION_BODY:
+    snprintf(key, size, "%s-%s-text", msg_info->msg_uid, section_str);
+    break;
+  }
+}
+
+static void generate_key_from_message(char * key, size_t size,
+                                      mailmessage * msg_info,
+                                      int type)
+{
+  switch (type) {
+  case MAILIMAP_MSG_ATT_RFC822:
+    snprintf(key, size, "%s-rfc822", msg_info->msg_uid);
+    break;
+  case MAILIMAP_MSG_ATT_RFC822_HEADER:
+    snprintf(key, size, "%s-rfc822-header", msg_info->msg_uid);
+    break;
+  case MAILIMAP_MSG_ATT_RFC822_TEXT:
+    snprintf(key, size, "%s-rfc822-text", msg_info->msg_uid);
+    break;
+  case MAILIMAP_MSG_ATT_ENVELOPE:
+    snprintf(key, size, "%s-envelope", msg_info->msg_uid);
+    break;
+  }
+}
+
+static void build_cache_name(char * filename, size_t size,
+                             mailmessage * msg, char * key)
+{
+  char * quoted_mb;
+
+  quoted_mb = get_cached_session_data(msg)->imap_quoted_mb;
+
+  snprintf(filename, size, "%s/%s", quoted_mb, key);
+}
+
+static int imap_initialize(mailmessage * msg_info)
+{
+  mailmessage * ancestor;
+  int r;
+  char key[PATH_MAX];
+  char * uid;
+  mailimap * imap;
+
+  ancestor = mailmessage_new();
+  if (ancestor == NULL)
+    return MAIL_ERROR_MEMORY;
+
+  r = mailmessage_init(ancestor, get_ancestor_session(msg_info),
+                       imap_message_driver,
+                       msg_info->msg_index, 0);
+  if (r != MAIL_NO_ERROR) {
+    mailmessage_free(ancestor);
+    return r;
+  }
+
+  imap = get_imap_session(msg_info);
+
+  snprintf(key, PATH_MAX, "%u-%u",
+           imap->imap_selection_info->sel_uidvalidity, msg_info->msg_index);
+  uid = strdup(key);
+  if (uid == NULL) {
+    mailmessage_free(ancestor);
+    return MAIL_ERROR_MEMORY;
+  }
+  
+  msg_info->msg_data = ancestor;
+  msg_info->msg_uid = uid;
+
+  return MAIL_NO_ERROR;
+}
+  
+static void imap_uninitialize(mailmessage * msg_info)
+{
+  mailmessage_free(get_ancestor(msg_info));
+  msg_info->msg_data = NULL;
+}
+
+static void imap_flush(mailmessage * msg_info)
+{
+  if (msg_info->msg_mime != NULL) {
+    mailmime_free(msg_info->msg_mime);
+    msg_info->msg_mime = NULL;
+  }
+}
+
+static void imap_check(mailmessage * msg_info)
+{
+  get_ancestor(msg_info)->msg_flags = msg_info->msg_flags;
+  mailmessage_check(get_ancestor(msg_info));
+  get_ancestor(msg_info)->msg_flags = NULL;
+}
+
+static void imap_fetch_result_free(mailmessage * msg_info,
+                                   char * msg)
+{
+  mailmessage_fetch_result_free(get_ancestor(msg_info), msg);
+}
+
+static int imap_fetch(mailmessage * msg_info,
+                      char ** result,
+                      size_t * result_len)
+{
+  char key[PATH_MAX];
+  char filename[PATH_MAX];
+  int r;
+  char * str;
+  size_t len;
+
+  generate_key_from_message(key, PATH_MAX,
+                            msg_info, MAILIMAP_MSG_ATT_RFC822);
+
+  build_cache_name(filename, PATH_MAX, msg_info, key);
+
+  r = generic_cache_read(filename, &str, &len);
+  if (r == MAIL_NO_ERROR) {
+    * result = str;
+    * result_len = len;
+
+    return MAIL_NO_ERROR;
+  }
+
+  r = mailmessage_fetch(get_ancestor(msg_info),
+                        result, result_len);
+  if (r == MAIL_NO_ERROR)
+    generic_cache_store(filename, * result, strlen(* result));
+
+  return r;
+}
+       
+static int imap_fetch_header(mailmessage * msg_info,
+                             char ** result,
+                             size_t * result_len)
+{
+  char key[PATH_MAX];
+  char filename[PATH_MAX];
+  int r;
+  char * str;
+  size_t len;
+
+  generate_key_from_message(key, PATH_MAX,
+                            msg_info, MAILIMAP_MSG_ATT_RFC822_HEADER);
+
+  build_cache_name(filename, PATH_MAX, msg_info, key);
+
+  r = generic_cache_read(filename, &str, &len);
+  if (r == MAIL_NO_ERROR) {
+    * result = str;
+    * result_len = len;
+
+    return MAIL_NO_ERROR;
+  }
+
+  r = mailmessage_fetch_header(get_ancestor(msg_info), result,
+                               result_len);
+  if (r == MAIL_NO_ERROR)
+    generic_cache_store(filename, * result, * result_len);
+
+  return r;
+}
+  
+static int imap_fetch_body(mailmessage * msg_info,
+                           char ** result, size_t * result_len)
+{
+  char key[PATH_MAX];
+  char filename[PATH_MAX];
+  int r;
+  char * str;
+  size_t len;
+
+  generate_key_from_message(key, PATH_MAX,
+                            msg_info, MAILIMAP_MSG_ATT_RFC822_TEXT);
+
+  build_cache_name(filename, PATH_MAX, msg_info, key);
+
+  r = generic_cache_read(filename, &str, &len);
+  if (r == MAIL_NO_ERROR) {
+    * result = str;
+    * result_len = len;
+    return MAIL_NO_ERROR;
+  }
+
+  r = mailmessage_fetch_body(get_ancestor(msg_info), result,
+                             result_len);
+  if (r == MAIL_NO_ERROR)
+    generic_cache_store(filename, * result, * result_len);
+
+  return r;
+}
+
+static int imap_fetch_size(mailmessage * msg_info,
+                           size_t * result)
+{
+  return mailmessage_fetch_size(get_ancestor(msg_info), result);
+}
+
+static int imap_get_bodystructure(mailmessage * msg_info,
+                                  struct mailmime ** result)
+{
+  int r;
+  
+  if (msg_info->msg_mime != NULL) {
+    * result = msg_info->msg_mime;
+
+    return MAIL_NO_ERROR;
+  }
+  
+  r = mailmessage_get_bodystructure(get_ancestor(msg_info),
+      result);
+  if (r == MAIL_NO_ERROR) {
+    msg_info->msg_mime = get_ancestor(msg_info)->msg_mime;
+    get_ancestor(msg_info)->msg_mime = NULL;
+  }
+  
+  return r;
+}
+
+static int imap_fetch_section(mailmessage * msg_info,
+                              struct mailmime * mime,
+                              char ** result, size_t * result_len)
+{
+  char key[PATH_MAX];
+  char filename[PATH_MAX];
+  int r;
+  char * str;
+  size_t len;
+
+  generate_key_from_section(key, PATH_MAX,
+                            msg_info, mime, IMAP_SECTION_MESSAGE);
+
+  build_cache_name(filename, PATH_MAX, msg_info, key);
+
+  r = generic_cache_read(filename, &str, &len);
+  if (r == MAIL_NO_ERROR) {
+    * result = str;
+    * result_len = len;
+
+    return MAIL_NO_ERROR;
+  }
+
+  r = mailmessage_fetch_section(get_ancestor(msg_info),
+                                mime, result, result_len);
+  if (r == MAIL_NO_ERROR)
+    generic_cache_store(filename, * result, * result_len);
+
+  return r;
+}
+  
+static int imap_fetch_section_header(mailmessage * msg_info,
+                                     struct mailmime * mime,
+                                     char ** result,
+                                     size_t * result_len)
+{
+  char key[PATH_MAX];
+  char filename[PATH_MAX];
+  int r;
+  char * str;
+  size_t len;
+
+  generate_key_from_section(key, PATH_MAX,
+                            msg_info, mime, IMAP_SECTION_HEADER);
+
+  build_cache_name(filename, PATH_MAX, msg_info, key);
+
+  r = generic_cache_read(filename, &str, &len);
+  if (r == MAIL_NO_ERROR) {
+    * result = str;
+    * result_len = len;
+
+    return MAIL_NO_ERROR;
+  }
+
+  r = mailmessage_fetch_section_header(get_ancestor(msg_info),
+                                       mime, result, result_len);
+  if (r == MAIL_NO_ERROR)
+    generic_cache_store(filename, * result, * result_len);
+
+  return r;
+}
+  
+static int imap_fetch_section_mime(mailmessage * msg_info,
+                                   struct mailmime * mime,
+                                   char ** result,
+                                   size_t * result_len)
+{
+  char key[PATH_MAX];
+  char filename[PATH_MAX];
+  int r;
+  char * str;
+  size_t len;
+
+  generate_key_from_section(key, PATH_MAX,
+                            msg_info, mime, IMAP_SECTION_MIME);
+
+  build_cache_name(filename, PATH_MAX, msg_info, key);
+
+  r = generic_cache_read(filename, &str, &len);
+  if (r == MAIL_NO_ERROR) {
+    * result = str;
+    * result_len = len;
+
+    return MAIL_NO_ERROR;
+  }
+
+  r = mailmessage_fetch_section_mime(get_ancestor(msg_info),
+                                     mime, result, result_len);
+  if (r == MAIL_NO_ERROR)
+    generic_cache_store(filename, * result, * result_len);
+
+  return r;
+}
+  
+static int imap_fetch_section_body(mailmessage * msg_info,
+                                   struct mailmime * mime,
+                                   char ** result,
+                                   size_t * result_len)
+{
+  char key[PATH_MAX];
+  char filename[PATH_MAX];
+  int r;
+  char * str;
+  size_t len;
+  
+  generate_key_from_section(key, PATH_MAX,
+                            msg_info, mime, IMAP_SECTION_BODY);
+
+  build_cache_name(filename, PATH_MAX, msg_info, key);
+
+  r = generic_cache_read(filename, &str, &len);
+  if (r == MAIL_NO_ERROR) {
+
+    * result = str;
+    * result_len = len;
+
+    return MAIL_NO_ERROR;
+  }
+
+  r = mailmessage_fetch_section_body(get_ancestor(msg_info),
+                                     mime, result, result_len);
+  if (r == MAIL_NO_ERROR)
+    generic_cache_store(filename, * result, * result_len);
+
+  return r;
+}
+
+static int imap_get_flags(mailmessage * msg_info,
+                          struct mail_flags ** result)
+{
+  int r;
+  struct mail_flags * flags;
+  
+  if (msg_info->msg_flags != NULL) {
+    * result = msg_info->msg_flags;
+    return MAIL_NO_ERROR;
+  }
+  
+  r = mailmessage_get_flags(get_ancestor(msg_info), &flags);
+  if (r != MAIL_NO_ERROR)
+    return r;
+
+  get_ancestor(msg_info)->msg_flags = NULL;
+  msg_info->msg_flags = flags;
+  * result = flags;
+  
+  return MAIL_NO_ERROR;
+}
+
+#define ENV_NAME "env.db"
+
+static int imap_fetch_envelope(mailmessage * msg_info,
+                               struct mailimf_fields ** result)
+{
+  struct mailimf_fields * fields;
+  int r;
+  struct mail_cache_db * cache_db;
+  MMAPString * mmapstr;
+  char filename[PATH_MAX];
+  struct imap_cached_session_state_data * data;
+  int res;
+  
+  data = get_cached_session_data(msg_info);
+  if (data->imap_quoted_mb == NULL) {
+    res = MAIL_ERROR_BAD_STATE;
+    goto err;
+  }
+
+  snprintf(filename, PATH_MAX, "%s/%s", data->imap_quoted_mb, ENV_NAME);
+
+  r = mail_cache_db_open_lock(filename, &cache_db);
+  if (r < 0) {
+    res = MAIL_ERROR_MEMORY;
+    goto err;
+  }
+
+  mmapstr = mmap_string_new("");
+  if (mmapstr == NULL) {
+    res = MAIL_ERROR_MEMORY;
+    goto close_db;
+  }
+
+  r = imapdriver_get_cached_envelope(cache_db, mmapstr,
+      msg_info->msg_session, msg_info, &fields);
+
+  if ((r != MAIL_ERROR_CACHE_MISS) && (r != MAIL_NO_ERROR)) {
+    res = r;
+    goto close_db;
+  }
+  
+  r = mailmessage_fetch_envelope(get_ancestor(msg_info), &fields);
+  if (r != MAIL_NO_ERROR) {
+    res = r;
+    goto close_db;
+  }
+
+  r = imapdriver_write_cached_envelope(cache_db, mmapstr,
+      msg_info->msg_session, msg_info, fields);
+
+  * result = fields;
+
+  mmap_string_free(mmapstr);
+  mail_cache_db_close_unlock(filename, cache_db);
+
+  return MAIL_NO_ERROR;
+
+ close_db:
+  mail_cache_db_close_unlock(filename, cache_db);
+ err:
+  return res;
+}