camel/providers/local/camel-maildir-folder.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; fill-column: 160 -*-
   2  *
   3  * Authors: Michael Zucchi <notzed@ximian.com>
   4  *
   5  * Copyright (C) 1999, 2003 Ximian Inc.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of version 2 of the GNU General Public
   9  * License as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19  * USA
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <stdlib.h>
  27 #include <sys/types.h>
  28 #include <dirent.h>
  29 #include <sys/stat.h>
  30 #include <unistd.h>
  31 #include <errno.h>
  32 #include <string.h>
  33 #include <fcntl.h>
  34
  35 #include "camel-maildir-folder.h"
  36 #include "camel-maildir-store.h"
  37 #include "camel-stream-fs.h"
  38 #include "camel-maildir-summary.h"
  39 #include "camel-data-wrapper.h"
  40 #include "camel-mime-message.h"
  41 #include "camel-exception.h"
  42
  43 #define d(x) /*(printf("%s(%d): ", __FILE__, __LINE__),(x))*/
  44
  45 static CamelLocalFolderClass *parent_class = NULL;
  46
  47 /* Returns the class for a CamelMaildirFolder */
  48 #define CMAILDIRF_CLASS(so) CAMEL_MAILDIR_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
  49 #define CF_CLASS(so) CAMEL_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
  50 #define CMAILDIRS_CLASS(so) CAMEL_STORE_CLASS (CAMEL_OBJECT_GET_CLASS(so))
  51
  52 static CamelLocalSummary *maildir_create_summary(const char *path, const char *folder, CamelIndex *index);
  53
  54 static void maildir_append_message(CamelFolder * folder, CamelMimeMessage * message, const CamelMessageInfo *info, char **appended_uid, CamelException * ex);
  55 static CamelMimeMessage *maildir_get_message(CamelFolder * folder, const gchar * uid, CamelException * ex);
  56
  57 static void maildir_finalize(CamelObject * object);
  58
  59 static void camel_maildir_folder_class_init(CamelObjectClass * camel_maildir_folder_class)
  60 {
  61         CamelFolderClass *camel_folder_class = CAMEL_FOLDER_CLASS(camel_maildir_folder_class);
  62         CamelLocalFolderClass *lclass = (CamelLocalFolderClass *)camel_maildir_folder_class;
  63
  64         parent_class = CAMEL_LOCAL_FOLDER_CLASS (camel_type_get_global_classfuncs(camel_local_folder_get_type()));
  65
  66         /* virtual method definition */
  67
  68         /* virtual method overload */
  69         camel_folder_class->append_message = maildir_append_message;
  70         camel_folder_class->get_message = maildir_get_message;
  71
  72         lclass->create_summary = maildir_create_summary;
  73 }
  74
  75 static void maildir_init(gpointer object, gpointer klass)
  76 {
  77         /*CamelFolder *folder = object;
  78           CamelMaildirFolder *maildir_folder = object;*/
  79 }
  80
  81 static void maildir_finalize(CamelObject * object)
  82 {
  83         /*CamelMaildirFolder *maildir_folder = CAMEL_MAILDIR_FOLDER(object);*/
  84 }
  85
  86 CamelType camel_maildir_folder_get_type(void)
  87 {
  88         static CamelType camel_maildir_folder_type = CAMEL_INVALID_TYPE;
  89
  90         if (camel_maildir_folder_type == CAMEL_INVALID_TYPE) {
  91                 camel_maildir_folder_type = camel_type_register(CAMEL_LOCAL_FOLDER_TYPE, "CamelMaildirFolder",
  92                                                            sizeof(CamelMaildirFolder),
  93                                                            sizeof(CamelMaildirFolderClass),
  94                                                            (CamelObjectClassInitFunc) camel_maildir_folder_class_init,
  95                                                            NULL,
  96                                                            (CamelObjectInitFunc) maildir_init,
  97                                                            (CamelObjectFinalizeFunc) maildir_finalize);
  98         }
  99
 100         return camel_maildir_folder_type;
 101 }
 102
 103 CamelFolder *
 104 camel_maildir_folder_new(CamelStore *parent_store, const char *full_name, guint32 flags, CamelException *ex)
 105 {
 106         CamelFolder *folder;
 107
 108         d(printf("Creating maildir folder: %s\n", full_name));
 109
 110         folder = (CamelFolder *)camel_object_new(CAMEL_MAILDIR_FOLDER_TYPE);
 111
 112         if (parent_store->flags & CAMEL_STORE_FILTER_INBOX
 113             && strcmp(full_name, ".") == 0)
 114                 folder->folder_flags |= CAMEL_FOLDER_FILTER_RECENT;
 115
 116         folder = (CamelFolder *)camel_local_folder_construct((CamelLocalFolder *)folder,
 117                                                              parent_store, full_name, flags, ex);
 118
 119         return folder;
 120 }
 121
 122 static CamelLocalSummary *maildir_create_summary(const char *path, const char *folder, CamelIndex *index)
 123 {
 124         return (CamelLocalSummary *)camel_maildir_summary_new(path, folder, index);
 125 }
 126
 127 static void
 128 maildir_append_message (CamelFolder *folder, CamelMimeMessage *message, const CamelMessageInfo *info, char **appended_uid, CamelException *ex)
 129 {
 130         CamelMaildirFolder *maildir_folder = (CamelMaildirFolder *)folder;
 131         CamelLocalFolder *lf = (CamelLocalFolder *)folder;
 132         CamelStream *output_stream;
 133         CamelMessageInfo *mi;
 134         CamelMaildirMessageInfo *mdi;
 135         char *name, *dest = NULL;
 136
 137         d(printf("Appending message\n"));
 138
 139         /* add it to the summary/assign the uid, etc */
 140         mi = camel_local_summary_add((CamelLocalSummary *)folder->summary, message, info, lf->changes, ex);
 141         if (camel_exception_is_set (ex))
 142                 return;
 143
 144         mdi = (CamelMaildirMessageInfo *)mi;
 145
 146         d(printf("Appending message: uid is %s filename is %s\n", camel_message_info_uid(mi), mdi->filename));
 147
 148         /* write it out to tmp, use the uid we got from the summary */
 149         name = g_strdup_printf ("%s/tmp/%s", lf->folder_path, camel_message_info_uid(mi));
 150         output_stream = camel_stream_fs_new_with_name (name, O_WRONLY|O_CREAT, 0600);
 151         if (output_stream == NULL)
 152                 goto fail_write;
 153
 154         if (camel_data_wrapper_write_to_stream ((CamelDataWrapper *)message, output_stream) == -1
 155             || camel_stream_close (output_stream) == -1)
 156                 goto fail_write;
 157
 158         /* now move from tmp to cur (bypass new, does it matter?) */
 159         dest = g_strdup_printf("%s/cur/%s", lf->folder_path, camel_maildir_info_filename (mdi));
 160         if (rename (name, dest) == 1)
 161                 goto fail_write;
 162
 163         g_free (dest);
 164         g_free (name);
 165
 166         camel_object_trigger_event (CAMEL_OBJECT (folder), "folder_changed",
 167                                     ((CamelLocalFolder *)maildir_folder)->changes);
 168         camel_folder_change_info_clear (((CamelLocalFolder *)maildir_folder)->changes);
 169
 170         if (appended_uid)
 171                 *appended_uid = g_strdup(camel_message_info_uid(mi));
 172
 173         return;
 174
 175  fail_write:
 176
 177         /* remove the summary info so we are not out-of-sync with the mh folder */
 178         camel_folder_summary_remove_uid (CAMEL_FOLDER_SUMMARY (folder->summary),
 179                                          camel_message_info_uid (mi));
 180
 181         if (errno == EINTR)
 182                 camel_exception_set (ex, CAMEL_EXCEPTION_USER_CANCEL,
 183                                      _("Maildir append message cancelled"));
 184         else
 185                 camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
 186                                       _("Cannot append message to maildir folder: %s: %s"),
 187                                       name, g_strerror (errno));
 188
 189         if (output_stream) {
 190                 camel_object_unref (CAMEL_OBJECT (output_stream));
 191                 unlink (name);
 192         }
 193
 194         g_free (name);
 195         g_free (dest);
 196 }
 197
 198 static CamelMimeMessage *maildir_get_message(CamelFolder * folder, const gchar * uid, CamelException * ex)
 199 {
 200         CamelLocalFolder *lf = (CamelLocalFolder *)folder;
 201         CamelStream *message_stream = NULL;
 202         CamelMimeMessage *message = NULL;
 203         CamelMessageInfo *info;
 204         char *name;
 205         CamelMaildirMessageInfo *mdi;
 206
 207         d(printf("getting message: %s\n", uid));
 208
 209         /* get the message summary info */
 210         if ((info = camel_folder_summary_uid(folder->summary, uid)) == NULL) {
 211                 camel_exception_setv(ex, CAMEL_EXCEPTION_FOLDER_INVALID_UID, _("Cannot get message: %s\n  %s"), uid, _("No such message"));
 212                 return NULL;
 213         }
 214
 215         mdi = (CamelMaildirMessageInfo *)info;
 216
 217         /* what do we do if the message flags (and :info data) changes?  filename mismatch - need to recheck I guess */
 218         name = g_strdup_printf("%s/cur/%s", lf->folder_path, camel_maildir_info_filename(mdi));
 219
 220         camel_folder_summary_info_free(folder->summary, info);
 221
 222         if ((message_stream = camel_stream_fs_new_with_name(name, O_RDONLY, 0)) == NULL) {
 223                 camel_exception_setv (ex, CAMEL_EXCEPTION_FOLDER_INVALID_UID,
 224                                       _("Cannot get message: %s\n  %s"),
 225                                       name, g_strerror (errno));
 226                 g_free(name);
 227                 return NULL;
 228         }
 229
 230         message = camel_mime_message_new();
 231         if (camel_data_wrapper_construct_from_stream((CamelDataWrapper *)message, message_stream) == -1) {
 232                 camel_exception_setv(ex, (errno==EINTR)?CAMEL_EXCEPTION_USER_CANCEL:CAMEL_EXCEPTION_FOLDER_INVALID_UID,
 233                                      _("Cannot get message: %s\n  %s"),
 234                                      name, _("Invalid message contents"));
 235                 g_free(name);
 236                 camel_object_unref((CamelObject *)message_stream);
 237                 camel_object_unref((CamelObject *)message);
 238                 return NULL;
 239
 240         }
 241         camel_object_unref((CamelObject *)message_stream);
 242         g_free(name);
 243
 244         return message;
 245 }