1 files changed, 484 insertions, 0 deletions

diff --git a/libetpan/src/driver/implementation/mh/mhdriver_tools.c b/libetpan/src/driver/implementation/mh/mhdriver_tools.c
new file mode 100644
index 0000000..b8bcf03
--- a/dev/null
+++ b/libetpan/src/driver/implementation/mh/mhdriver_tools.c
@@ -0,0 +1,484 @@
+/*
+ * 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 "mhdriver_tools.h"
+
+#include "mailmessage.h"
+#include "mhdriver.h"
+#include "mhdriver_cached.h"
+#include "maildriver_types.h"
+#include "mailmh.h"
+#include "generic_cache.h"
+#include "imfcache.h"
+#include "mail_cache_db.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>
+
+int mhdriver_mh_error_to_mail_error(int error)
+{
+  switch (error) {
+  case MAILMH_NO_ERROR:
+    return MAIL_NO_ERROR;
+    
+  case MAILMH_ERROR_FOLDER:
+    return MAIL_ERROR_FOLDER;
+
+  case MAILMH_ERROR_MEMORY:
+    return MAIL_ERROR_MEMORY;
+
+  case MAILMH_ERROR_FILE:
+    return MAIL_ERROR_FILE;
+
+  case MAILMH_ERROR_COULD_NOT_ALLOC_MSG:
+    return MAIL_ERROR_APPEND;
+    
+  case MAILMH_ERROR_RENAME:
+    return MAIL_ERROR_RENAME;
+
+  case MAILMH_ERROR_MSG_NOT_FOUND:
+    return MAIL_ERROR_MSG_NOT_FOUND;
+
+  default:
+    return MAIL_ERROR_INVAL;
+  }
+}
+
+
+static inline struct mh_session_state_data * get_data(mailsession * session)
+{
+  return session->sess_data;
+}
+
+static inline struct mailmh_folder * get_mh_cur_folder(mailsession * session)
+{
+  return get_data(session)->mh_cur_folder;
+}
+
+static inline struct mh_cached_session_state_data *
+cached_get_data(mailsession * session)
+{
+  return session->sess_data;
+}
+
+
+static inline mailsession * cached_get_ancestor(mailsession * session)
+{
+  return cached_get_data(session)->mh_ancestor;
+}
+
+static inline struct mh_session_state_data *
+cached_get_ancestor_data(mailsession * session)
+{
+  return get_data(cached_get_ancestor(session));
+}
+
+static inline struct mailmh_folder *
+cached_get_mh_cur_folder(mailsession * session)
+{
+  return get_mh_cur_folder(cached_get_ancestor(session));
+}
+
+int mhdriver_fetch_message(mailsession * session, uint32_t index,
+                           char ** result, size_t * result_len)
+{
+  size_t size;
+  size_t cur_token;
+  struct mailmh_folder * folder;
+  int fd;
+  MMAPString * mmapstr;
+  char * str;
+  int res;
+  int r;
+
+  folder = get_mh_cur_folder(session);
+  if (folder == NULL) {
+    res = MAIL_ERROR_BAD_STATE;
+    goto err;
+  }
+
+  r = mailmh_folder_get_message_fd(folder, index, O_RDONLY, &fd);
+
+  switch (r) {
+  case MAILMH_NO_ERROR:
+    break;
+
+  default:
+    res = mhdriver_mh_error_to_mail_error(r);
+    goto close;
+  }
+
+  r = mhdriver_fetch_size(session, index, &size);
+
+  switch (r) {
+  case MAILMH_NO_ERROR:
+    break;
+
+  default:
+    res = mhdriver_mh_error_to_mail_error(r);
+    goto close;
+  }
+
+  str = mmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
+  if (str == MAP_FAILED) {
+    res = MAIL_ERROR_FETCH;
+    goto close;
+  }
+
+  /* strip "From " header for broken implementations */
+  /* XXX - called twice, make a function */
+  cur_token = 0;
+  if (strncmp("From ", str, 5) == 0) {
+    cur_token += 5;
+    
+    while (1) {
+      if (str[cur_token] == '\n') {
+        cur_token ++;
+        break;
+      }
+      if (cur_token >= size)
+        break;
+      cur_token ++;
+    }
+  }
+
+  mmapstr = mmap_string_new_len(str + cur_token, size - cur_token);
+  if (mmapstr == NULL) {
+    res = MAIL_ERROR_MEMORY;
+    goto unmap;
+  }
+    
+  if (mmap_string_ref(mmapstr) != 0) {
+    res = MAIL_ERROR_MEMORY;
+    goto free_str;
+  }
+
+  munmap(str, size);
+  close(fd);
+
+  * result = mmapstr->str;
+  * result_len = mmapstr->len;
+
+  return MAIL_NO_ERROR;
+
+ free_str:
+  mmap_string_free(mmapstr);
+ unmap:
+  munmap(str, size);
+ close:
+  close(fd);
+ err:
+  return res;
+}
+
+
+int mhdriver_fetch_header(mailsession * session, uint32_t index,
+                          char ** result, size_t * result_len)
+{
+  size_t size;
+  size_t cur_token;
+  size_t begin;
+  struct mailmh_folder * folder;
+  int fd;
+  MMAPString * mmapstr;
+  char * str;
+  int res;
+  int r;
+
+  folder = get_mh_cur_folder(session);
+  if (folder == NULL) {
+    res = MAIL_ERROR_BAD_STATE;
+    goto err;
+  }
+
+  r = mailmh_folder_get_message_fd(folder, index, O_RDONLY, &fd);
+
+  switch (r) {
+  case MAILMH_NO_ERROR:
+    break;
+
+  default:
+    res = mhdriver_mh_error_to_mail_error(r);
+    goto close;
+  }
+
+  r = mhdriver_fetch_size(session, index, &size);
+
+  switch (r) {
+  case MAILMH_NO_ERROR:
+    break;
+
+  default:
+    res = mhdriver_mh_error_to_mail_error(r);
+    goto close;
+  }
+
+  str = mmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
+  if (str == MAP_FAILED) {
+    res = MAIL_ERROR_FETCH;
+    goto close;
+  }
+
+  /* strip "From " header for broken implementations */
+  cur_token = 0;
+  if (size > 5) {
+    if (strncmp("From ", str, 5) == 0) {
+      cur_token += 5;
+      
+      while (1) {
+        if (str[cur_token] == '\n') {
+          cur_token ++;
+          break;
+        }
+        if (cur_token >= size)
+          break;
+        cur_token ++;
+      }
+    }
+  }
+    
+  begin = cur_token;
+
+  while (1) {
+    r = mailimf_ignore_field_parse(str, size, &cur_token);
+    if (r == MAILIMF_NO_ERROR) {
+      /* do nothing */
+    }
+    else
+      break;
+  }
+  mailimf_crlf_parse(str, size, &cur_token);
+    
+  mmapstr = mmap_string_new_len(str + begin, cur_token - begin);
+  if (mmapstr == NULL) {
+    res = MAIL_ERROR_MEMORY;
+    goto unmap;
+  }
+
+  if (mmap_string_ref(mmapstr) != 0) {
+    res = MAIL_ERROR_MEMORY;
+    goto free_str;
+  }
+
+  munmap(str, size);
+  close(fd);
+
+  * result = mmapstr->str;
+  * result_len = mmapstr->len;
+
+  return MAIL_NO_ERROR;
+
+ free_str:
+  mmap_string_free(mmapstr);
+ unmap:
+  munmap(str, size);
+ close:
+  close(fd);
+ err:
+  return res;
+}
+
+
+int mhdriver_fetch_size(mailsession * session, uint32_t index,
+                        size_t * result)
+{
+  struct mailmh_folder * folder;
+  int r;
+  struct stat buf;
+  char * name;
+
+  folder = get_mh_cur_folder(session);
+  if (folder == NULL)
+    return MAIL_ERROR_FETCH;
+
+  r = mailmh_folder_get_message_filename(folder, index, &name);
+
+  switch (r) {
+  case MAILMH_NO_ERROR:
+    break;
+
+  default:
+    return mhdriver_mh_error_to_mail_error(r);
+  }
+
+  r = stat(name, &buf);
+  free(name);
+  if (r == -1)
+    return MAIL_ERROR_FETCH;
+
+  * result = buf.st_size;
+
+  return MAIL_NO_ERROR;
+}
+
+int
+mhdriver_get_cached_flags(struct mail_cache_db * cache_db,
+    MMAPString * mmapstr,
+    mailsession * session,
+    uint32_t num, 
+    struct mail_flags ** result)
+{
+  int r;
+  char keyname[PATH_MAX];
+  struct mail_flags * flags;
+  int res;
+  struct mailmh_msg_info * msg_info;
+  chashdatum key;
+  chashdatum data;
+  struct mailmh_folder * folder;
+  
+  folder = cached_get_mh_cur_folder(session);
+#if 0
+  msg_info = cinthash_find(mh_data->cur_folder->fl_msgs_hash, num);
+  if (msg_info == NULL)
+    return MAIL_ERROR_CACHE_MISS;
+#endif
+  key.data = &num;
+  key.len = sizeof(num);
+  r = chash_get(folder->fl_msgs_hash, &key, &data);
+  if (r < 0)
+    return MAIL_ERROR_CACHE_MISS;
+  msg_info = data.data;
+  
+  snprintf(keyname, PATH_MAX, "%u-%lu-%lu-flags",
+           num, (unsigned long) msg_info->msg_mtime,
+      (unsigned long) msg_info->msg_size);
+
+  r = generic_cache_flags_read(cache_db, mmapstr, keyname, &flags);
+  if (r != MAIL_NO_ERROR) {
+    res = r;
+    goto err;
+  }
+
+  * result = flags;
+
+  return MAIL_NO_ERROR;
+
+ err:
+  return res;
+}
+
+int
+mhdriver_write_cached_flags(struct mail_cache_db * cache_db,
+    MMAPString * mmapstr,
+    char * uid,
+    struct mail_flags * flags)
+{
+  int r;
+  char keyname[PATH_MAX];
+  int res;
+
+  snprintf(keyname, PATH_MAX, "%s-flags", uid);
+
+  r = generic_cache_flags_write(cache_db, mmapstr, keyname, flags);
+  if (r != MAIL_NO_ERROR) {
+    res = r;
+    goto err;
+  }
+
+  return MAIL_NO_ERROR;
+
+ err:
+  return res;
+}
+
+
+int mh_get_messages_list(struct mailmh_folder * folder,
+                         mailsession * session, mailmessage_driver * driver,
+                         struct mailmessage_list ** result)
+{
+  unsigned int i;
+  struct mailmessage_list * env_list;
+  int r;
+  carray * tab;
+  int res;
+
+  tab = carray_new(128);
+  if (tab == NULL) {
+    res = MAIL_ERROR_MEMORY;
+    goto err;
+  }
+
+  for(i = 0 ; i < carray_count(folder->fl_msgs_tab) ; i++) {
+    struct mailmh_msg_info * mh_info;
+    mailmessage * msg;
+    
+    mh_info = carray_get(folder->fl_msgs_tab, i);
+    if (mh_info == NULL)
+      continue;
+
+    msg = mailmessage_new();
+    if (msg == NULL) {
+      res = MAIL_ERROR_MEMORY;
+      goto free_list;
+    }
+
+    r = mailmessage_init(msg, session, driver,
+                         mh_info->msg_index, mh_info->msg_size);
+    if (r != MAIL_NO_ERROR) {
+      res = r;
+      goto free_list;
+    }
+
+    r = carray_add(tab, msg, NULL);
+    if (r < 0) {
+      mailmessage_free(msg);
+      res = MAIL_ERROR_MEMORY;
+      goto free_list;
+    }
+  }
+
+  env_list = mailmessage_list_new(tab);
+  if (env_list == NULL) {
+      res = MAIL_ERROR_MEMORY;
+    goto free_list;
+  }
+
+  * result = env_list;
+
+  return MAIL_NO_ERROR;
+
+ free_list:
+  for(i = 0 ; i < carray_count(tab) ; i ++)
+    mailmessage_free(carray_get(tab, i));
+  carray_free(tab);
+ err:
+  return res;
+}