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, 2000 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 "string-utils.h"
  38 #include "camel-stream-fs.h"
  39 #include "camel-maildir-summary.h"
  40 #include "camel-data-wrapper.h"
  41 #include "camel-mime-message.h"
  42 #include "camel-exception.h"
  43
  44 #define d(x) /*(printf("%s(%d): ", __FILE__, __LINE__),(x))*/
  45
  46 static CamelLocalFolderClass *parent_class = NULL;
  47
  48 /* Returns the class for a CamelMaildirFolder */
  49 #define CMAILDIRF_CLASS(so) CAMEL_MAILDIR_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
  50 #define CF_CLASS(so) CAMEL_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
  51 #define CMAILDIRS_CLASS(so) CAMEL_STORE_CLASS (CAMEL_OBJECT_GET_CLASS(so))
  52
  53 static CamelLocalSummary *maildir_create_summary(const char *path, const char *folder, CamelIndex *index);
  54
  55 static void maildir_append_message(CamelFolder * folder, CamelMimeMessage * message, const CamelMessageInfo *info, char **appended_uid, CamelException * ex);
  56 static CamelMimeMessage *maildir_get_message(CamelFolder * folder, const gchar * uid, CamelException * ex);
  57
  58 static void maildir_finalize(CamelObject * object);
  59
  60 static void camel_maildir_folder_class_init(CamelObjectClass * camel_maildir_folder_class)
  61 {
  62         CamelFolderClass *camel_folder_class = CAMEL_FOLDER_CLASS(camel_maildir_folder_class);
  63         CamelLocalFolderClass *lclass = (CamelLocalFolderClass *)camel_maildir_folder_class;
  64
  65         parent_class = CAMEL_LOCAL_FOLDER_CLASS (camel_type_get_global_classfuncs(camel_local_folder_get_type()));
  66
  67         /* virtual method definition */
  68
  69         /* virtual method overload */
  70         camel_folder_class->append_message = maildir_append_message;
  71         camel_folder_class->get_message = maildir_get_message;
  72
  73         lclass->create_summary = maildir_create_summary;
  74 }
  75
  76 static void maildir_init(gpointer object, gpointer klass)
  77 {
  78         /*CamelFolder *folder = object;
  79           CamelMaildirFolder *maildir_folder = object;*/
  80 }
  81
  82 static void maildir_finalize(CamelObject * object)
  83 {
  84         /*CamelMaildirFolder *maildir_folder = CAMEL_MAILDIR_FOLDER(object);*/
  85 }
  86
  87 CamelType camel_maildir_folder_get_type(void)
  88 {
  89         static CamelType camel_maildir_folder_type = CAMEL_INVALID_TYPE;
  90
  91         if (camel_maildir_folder_type == CAMEL_INVALID_TYPE) {
  92                 camel_maildir_folder_type = camel_type_register(CAMEL_LOCAL_FOLDER_TYPE, "CamelMaildirFolder",
  93                                                            sizeof(CamelMaildirFolder),
  94                                                            sizeof(CamelMaildirFolderClass),
  95                                                            (CamelObjectClassInitFunc) camel_maildir_folder_class_init,
  96                                                            NULL,
  97                                                            (CamelObjectInitFunc) maildir_init,
  98                                                            (CamelObjectFinalizeFunc) maildir_finalize);
  99         }
 100
 101         return camel_maildir_folder_type;
 102 }
 103
 104 CamelFolder *
 105 camel_maildir_folder_new(CamelStore *parent_store, const char *full_name, guint32 flags, CamelException *ex)
 106 {
 107         CamelFolder *folder;
 108
 109         d(printf("Creating maildir folder: %s\n", full_name));
 110
 111         folder = (CamelFolder *)camel_object_new(CAMEL_MAILDIR_FOLDER_TYPE);
 112
 113         if (parent_store->flags & CAMEL_STORE_FILTER_INBOX
 114             && strcmp(full_name, ".") == 0)
 115                 folder->folder_flags |= CAMEL_FOLDER_FILTER_RECENT;
 116
 117         folder = (CamelFolder *)camel_local_folder_construct((CamelLocalFolder *)folder,
 118                                                              parent_store, full_name, flags, ex);
 119
 120         return folder;
 121 }
 122
 123 static CamelLocalSummary *maildir_create_summary(const char *path, const char *folder, CamelIndex *index)
 124 {
 125         return (CamelLocalSummary *)camel_maildir_summary_new(path, folder, index);
 126 }
 127
 128 static void
 129 maildir_append_message (CamelFolder *folder, CamelMimeMessage *message, const CamelMessageInfo *info, char **appended_uid, CamelException *ex)
 130 {
 131         CamelMaildirFolder *maildir_folder = (CamelMaildirFolder *)folder;
 132         CamelLocalFolder *lf = (CamelLocalFolder *)folder;
 133         CamelStream *output_stream;
 134         CamelMessageInfo *mi;
 135         CamelMaildirMessageInfo *mdi;
 136         char *name, *dest = NULL;
 137
 138         d(printf("Appending message\n"));
 139
 140         /* add it to the summary/assign the uid, etc */
 141         mi = camel_local_summary_add((CamelLocalSummary *)folder->summary, message, info, lf->changes, ex);
 142         if (camel_exception_is_set (ex))
 143                 return;
 144
 145         mdi = (CamelMaildirMessageInfo *)mi;
 146
 147         d(printf("Appending message: uid is %s filename is %s\n", camel_message_info_uid(mi), mdi->filename));
 148
 149         /* write it out to tmp, use the uid we got from the summary */
 150         name = g_strdup_printf ("%s/tmp/%s", lf->folder_path, camel_message_info_uid(mi));
 151         output_stream = camel_stream_fs_new_with_name (name, O_WRONLY|O_CREAT, 0600);
 152         if (output_stream == NULL)
 153                 goto fail_write;
 154
 155         if (camel_data_wrapper_write_to_stream ((CamelDataWrapper *)message, output_stream) == -1
 156             || camel_stream_close (output_stream) == -1)
 157                 goto fail_write;
 158
 159         /* now move from tmp to cur (bypass new, does it matter?) */
 160         dest = g_strdup_printf("%s/cur/%s", lf->folder_path, camel_maildir_info_filename (mdi));
 161         if (rename (name, dest) == 1)
 162                 goto fail_write;
 163
 164         g_free (dest);
 165         g_free (name);
 166
 167         camel_object_trigger_event (CAMEL_OBJECT (folder), "folder_changed",
 168                                     ((CamelLocalFolder *)maildir_folder)->changes);
 169         camel_folder_change_info_clear (((CamelLocalFolder *)maildir_folder)->changes);
 170
 171         if (appended_uid)
 172                 *appended_uid = g_strdup(camel_message_info_uid(mi));
 173
 174         return;
 175
 176  fail_write:
 177
 178         /* remove the summary info so we are not out-of-sync with the mh folder */
 179         camel_folder_summary_remove_uid (CAMEL_FOLDER_SUMMARY (folder->summary),
 180                                          camel_message_info_uid (mi));
 181
 182         if (errno == EINTR)
 183                 camel_exception_set (ex, CAMEL_EXCEPTION_USER_CANCEL,
 184                                      _("Maildir append message cancelled"));
 185         else
 186                 camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
 187                                       _("Cannot append message to maildir folder: %s: %s"),
 188                                       name, g_strerror (errno));
 189
 190         if (output_stream) {
 191                 camel_object_unref (CAMEL_OBJECT (output_stream));
 192                 unlink (name);
 193         }
 194
 195         g_free (name);
 196         g_free (dest);
 197 }
 198
 199 static CamelMimeMessage *maildir_get_message(CamelFolder * folder, const gchar * uid, CamelException * ex)
 200 {
 201         CamelLocalFolder *lf = (CamelLocalFolder *)folder;
 202         CamelStream *message_stream = NULL;
 203         CamelMimeMessage *message = NULL;
 204         CamelMessageInfo *info;
 205         char *name;
 206         CamelMaildirMessageInfo *mdi;
 207
 208         d(printf("getting message: %s\n", uid));
 209
 210         /* get the message summary info */
 211         if ((info = camel_folder_summary_uid(folder->summary, uid)) == NULL) {
 212                 camel_exception_setv(ex, CAMEL_EXCEPTION_FOLDER_INVALID_UID, _("Cannot get message: %s\n  %s"), uid, _("No such message"));
 213                 return NULL;
 214         }
 215
 216         mdi = (CamelMaildirMessageInfo *)info;
 217
 218         /* what do we do if the message flags (and :info data) changes?  filename mismatch - need to recheck I guess */
 219         name = g_strdup_printf("%s/cur/%s", lf->folder_path, camel_maildir_info_filename(mdi));
 220
 221         camel_folder_summary_info_free(folder->summary, info);
 222
 223         if ((message_stream = camel_stream_fs_new_with_name(name, O_RDONLY, 0)) == NULL) {
 224                 camel_exception_setv (ex, CAMEL_EXCEPTION_FOLDER_INVALID_UID,
 225                                       _("Cannot get message: %s\n  %s"),
 226                                       name, g_strerror (errno));
 227                 g_free(name);
 228                 return NULL;
 229         }
 230
 231         message = camel_mime_message_new();
 232         if (camel_data_wrapper_construct_from_stream((CamelDataWrapper *)message, message_stream) == -1) {
 233                 camel_exception_setv(ex, (errno==EINTR)?CAMEL_EXCEPTION_USER_CANCEL:CAMEL_EXCEPTION_FOLDER_INVALID_UID,
 234                                      _("Cannot get message: %s\n  %s"),
 235                                      name, _("Invalid message contents"));
 236                 g_free(name);
 237                 camel_object_unref((CamelObject *)message_stream);
 238                 camel_object_unref((CamelObject *)message);
 239                 return NULL;
 240
 241         }
 242         camel_object_unref((CamelObject *)message_stream);
 243         g_free(name);
 244
 245         return message;
 246 }