camel/providers/local/camel-mh-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 Lesser 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 Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
  19  * USA
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <dirent.h>
  27 #include <errno.h>
  28 #include <fcntl.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31 #include <unistd.h>
  32 #include <sys/stat.h>
  33 #include <sys/types.h>
  34
  35 #include <glib/gi18n-lib.h>
  36
  37 #include "camel-data-wrapper.h"
  38 #include "camel-exception.h"
  39 #include "camel-mh-folder.h"
  40 #include "camel-mh-store.h"
  41 #include "camel-mh-summary.h"
  42 #include "camel-mime-message.h"
  43 #include "camel-stream-fs.h"
  44
  45 #define d(x) /*(printf("%s(%d): ", __FILE__, __LINE__),(x))*/
  46
  47 static CamelLocalFolderClass *parent_class = NULL;
  48
  49 /* Returns the class for a CamelMhFolder */
  50 #define CMHF_CLASS(so) CAMEL_MH_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
  51 #define CF_CLASS(so) CAMEL_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
  52 #define CMHS_CLASS(so) CAMEL_STORE_CLASS (CAMEL_OBJECT_GET_CLASS(so))
  53
  54 static CamelLocalSummary *mh_create_summary(CamelLocalFolder *lf, const char *path, const char *folder, CamelIndex *index);
  55
  56 static void mh_append_message(CamelFolder * folder, CamelMimeMessage * message, const CamelMessageInfo *info, char **appended_uid, CamelException * ex);
  57 static CamelMimeMessage *mh_get_message(CamelFolder * folder, const gchar * uid, CamelException * ex);
  58
  59 static void mh_finalize(CamelObject * object);
  60
  61 static void camel_mh_folder_class_init(CamelObjectClass * camel_mh_folder_class)
  62 {
  63         CamelFolderClass *camel_folder_class = CAMEL_FOLDER_CLASS(camel_mh_folder_class);
  64         CamelLocalFolderClass *lclass = (CamelLocalFolderClass *)camel_mh_folder_class;
  65
  66         parent_class = CAMEL_LOCAL_FOLDER_CLASS (camel_type_get_global_classfuncs(camel_local_folder_get_type()));
  67
  68         /* virtual method definition */
  69
  70         /* virtual method overload */
  71         camel_folder_class->append_message = mh_append_message;
  72         camel_folder_class->get_message = mh_get_message;
  73
  74         lclass->create_summary = mh_create_summary;
  75 }
  76
  77 static void mh_init(gpointer object, gpointer klass)
  78 {
  79         /*CamelFolder *folder = object;
  80           CamelMhFolder *mh_folder = object;*/
  81 }
  82
  83 static void mh_finalize(CamelObject * object)
  84 {
  85         /*CamelMhFolder *mh_folder = CAMEL_MH_FOLDER(object);*/
  86 }
  87
  88 CamelType camel_mh_folder_get_type(void)
  89 {
  90         static CamelType camel_mh_folder_type = CAMEL_INVALID_TYPE;
  91
  92         if (camel_mh_folder_type == CAMEL_INVALID_TYPE) {
  93                 camel_mh_folder_type = camel_type_register(CAMEL_LOCAL_FOLDER_TYPE, "CamelMhFolder",
  94                                                            sizeof(CamelMhFolder),
  95                                                            sizeof(CamelMhFolderClass),
  96                                                            (CamelObjectClassInitFunc) camel_mh_folder_class_init,
  97                                                            NULL,
  98                                                            (CamelObjectInitFunc) mh_init,
  99                                                            (CamelObjectFinalizeFunc) mh_finalize);
 100         }
 101
 102         return camel_mh_folder_type;
 103 }
 104
 105 CamelFolder *
 106 camel_mh_folder_new(CamelStore *parent_store, const char *full_name, guint32 flags, CamelException *ex)
 107 {
 108         CamelFolder *folder;
 109
 110         d(printf("Creating mh folder: %s\n", full_name));
 111
 112         folder = (CamelFolder *)camel_object_new(CAMEL_MH_FOLDER_TYPE);
 113         folder = (CamelFolder *)camel_local_folder_construct((CamelLocalFolder *)folder,
 114                                                              parent_store, full_name, flags, ex);
 115
 116         return folder;
 117 }
 118
 119 static CamelLocalSummary *mh_create_summary(CamelLocalFolder *lf, const char *path, const char *folder, CamelIndex *index)
 120 {
 121         return (CamelLocalSummary *)camel_mh_summary_new((CamelFolder *)lf, path, folder, index);
 122 }
 123
 124 static void
 125 mh_append_message (CamelFolder *folder, CamelMimeMessage *message, const CamelMessageInfo *info, char **appended_uid, CamelException *ex)
 126 {
 127         CamelMhFolder *mh_folder = (CamelMhFolder *)folder;
 128         CamelLocalFolder *lf = (CamelLocalFolder *)folder;
 129         CamelStream *output_stream;
 130         CamelMessageInfo *mi;
 131         char *name;
 132
 133         /* FIXME: probably needs additional locking (although mh doesn't appear do do it) */
 134
 135         d(printf("Appending message\n"));
 136
 137         /* add it to the summary/assign the uid, etc */
 138         mi = camel_local_summary_add((CamelLocalSummary *)folder->summary, message, info, lf->changes, ex);
 139         if (camel_exception_is_set (ex))
 140                 return;
 141
 142         d(printf("Appending message: uid is %s\n", camel_message_info_uid(mi)));
 143
 144         /* write it out, use the uid we got from the summary */
 145         name = g_strdup_printf("%s/%s", lf->folder_path, camel_message_info_uid(mi));
 146         output_stream = camel_stream_fs_new_with_name(name, O_WRONLY|O_CREAT, 0600);
 147         if (output_stream == NULL)
 148                 goto fail_write;
 149
 150         if (camel_data_wrapper_write_to_stream ((CamelDataWrapper *)message, output_stream) == -1
 151             || camel_stream_close (output_stream) == -1)
 152                 goto fail_write;
 153
 154         /* close this? */
 155         camel_object_unref (CAMEL_OBJECT (output_stream));
 156
 157         g_free(name);
 158
 159         camel_object_trigger_event (CAMEL_OBJECT (folder), "folder_changed",
 160                                     ((CamelLocalFolder *)mh_folder)->changes);
 161         camel_folder_change_info_clear (((CamelLocalFolder *)mh_folder)->changes);
 162
 163         if (appended_uid)
 164                 *appended_uid = g_strdup(camel_message_info_uid(mi));
 165
 166         return;
 167
 168  fail_write:
 169
 170         /* remove the summary info so we are not out-of-sync with the mh folder */
 171         camel_folder_summary_remove_uid (CAMEL_FOLDER_SUMMARY (folder->summary),
 172                                          camel_message_info_uid (mi));
 173
 174         if (errno == EINTR)
 175                 camel_exception_set (ex, CAMEL_EXCEPTION_USER_CANCEL,
 176                                      _("MH append message canceled"));
 177         else
 178                 camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
 179                                       _("Cannot append message to mh folder: %s: %s"),
 180                                       name, g_strerror (errno));
 181
 182         if (output_stream) {
 183                 camel_object_unref (CAMEL_OBJECT (output_stream));
 184                 unlink (name);
 185         }
 186
 187         g_free (name);
 188 }
 189
 190 static CamelMimeMessage *mh_get_message(CamelFolder * folder, const gchar * uid, CamelException * ex)
 191 {
 192         CamelLocalFolder *lf = (CamelLocalFolder *)folder;
 193         CamelStream *message_stream = NULL;
 194         CamelMimeMessage *message = NULL;
 195         CamelMessageInfo *info;
 196         char *name;
 197
 198         d(printf("getting message: %s\n", uid));
 199
 200         /* get the message summary info */
 201         if ((info = camel_folder_summary_uid(folder->summary, uid)) == NULL) {
 202                 camel_exception_setv(ex, CAMEL_EXCEPTION_FOLDER_INVALID_UID,
 203                                      _("Cannot get message: %s from folder %s\n  %s"), uid, lf->folder_path,
 204                                      _("No such message"));
 205                 return NULL;
 206         }
 207
 208         /* we only need it to check the message exists */
 209         camel_message_info_free(info);
 210
 211         name = g_strdup_printf("%s/%s", lf->folder_path, uid);
 212         if ((message_stream = camel_stream_fs_new_with_name(name, O_RDONLY, 0)) == NULL) {
 213                 camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
 214                                       _("Cannot get message: %s from folder %s\n  %s"), name, lf->folder_path,
 215                                       g_strerror (errno));
 216                 g_free(name);
 217                 return NULL;
 218         }
 219
 220         message = camel_mime_message_new();
 221         if (camel_data_wrapper_construct_from_stream((CamelDataWrapper *)message, message_stream) == -1) {
 222                 camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
 223                                       _("Cannot get message: %s from folder %s\n  %s"), name, lf->folder_path,
 224                                       _("Message construction failed."));
 225                 g_free(name);
 226                 camel_object_unref((CamelObject *)message_stream);
 227                 camel_object_unref((CamelObject *)message);
 228                 return NULL;
 229
 230         }
 231         camel_object_unref((CamelObject *)message_stream);
 232         g_free(name);
 233
 234         return message;
 235 }