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 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-mime-message.h"
  40 #include "camel-stream-fs.h"
  41
  42 #include "camel-maildir-folder.h"
  43 #include "camel-maildir-store.h"
  44 #include "camel-maildir-summary.h"
  45
  46 #define d(x) /*(printf("%s(%d): ", __FILE__, __LINE__),(x))*/
  47
  48 static CamelLocalFolderClass *parent_class = NULL;
  49
  50 /* Returns the class for a CamelMaildirFolder */
  51 #define CMAILDIRF_CLASS(so) CAMEL_MAILDIR_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
  52 #define CF_CLASS(so) CAMEL_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
  53 #define CMAILDIRS_CLASS(so) CAMEL_STORE_CLASS (CAMEL_OBJECT_GET_CLASS(so))
  54
  55 static CamelLocalSummary *maildir_create_summary(CamelLocalFolder *lf, const char *path, const char *folder, CamelIndex *index);
  56
  57 static void maildir_append_message(CamelFolder * folder, CamelMimeMessage * message, const CamelMessageInfo *info, char **appended_uid, CamelException * ex);
  58 static CamelMimeMessage *maildir_get_message(CamelFolder * folder, const gchar * uid, CamelException * ex);
  59
  60 static void maildir_finalize(CamelObject * object);
  61
  62 static int
  63 maildir_folder_getv(CamelObject *object, CamelException *ex, CamelArgGetV *args)
  64 {
  65         CamelFolder *folder = (CamelFolder *)object;
  66         int i;
  67         guint32 tag;
  68
  69         for (i=0;i<args->argc;i++) {
  70                 CamelArgGet *arg = &args->argv[i];
  71
  72                 tag = arg->tag;
  73
  74                 switch (tag & CAMEL_ARG_TAG) {
  75                 case CAMEL_FOLDER_ARG_NAME:
  76                         if (!strcmp(folder->full_name, "."))
  77                                 *arg->ca_str = _("Inbox");
  78                         else
  79                                 *arg->ca_str = folder->name;
  80                         break;
  81                 default:
  82                         continue;
  83                 }
  84
  85                 arg->tag = (tag & CAMEL_ARG_TYPE) | CAMEL_ARG_IGNORE;
  86         }
  87
  88         return ((CamelObjectClass *)parent_class)->getv(object, ex, args);
  89 }
  90
  91 static void camel_maildir_folder_class_init(CamelObjectClass * camel_maildir_folder_class)
  92 {
  93         CamelFolderClass *camel_folder_class = CAMEL_FOLDER_CLASS(camel_maildir_folder_class);
  94         CamelLocalFolderClass *lclass = (CamelLocalFolderClass *)camel_maildir_folder_class;
  95
  96         parent_class = CAMEL_LOCAL_FOLDER_CLASS (camel_type_get_global_classfuncs(camel_local_folder_get_type()));
  97
  98         /* virtual method definition */
  99
 100         /* virtual method overload */
 101         ((CamelObjectClass *)camel_folder_class)->getv = maildir_folder_getv;
 102
 103         camel_folder_class->append_message = maildir_append_message;
 104         camel_folder_class->get_message = maildir_get_message;
 105
 106         lclass->create_summary = maildir_create_summary;
 107 }
 108
 109 static void maildir_init(gpointer object, gpointer klass)
 110 {
 111         /*CamelFolder *folder = object;
 112           CamelMaildirFolder *maildir_folder = object;*/
 113 }
 114
 115 static void maildir_finalize(CamelObject * object)
 116 {
 117         /*CamelMaildirFolder *maildir_folder = CAMEL_MAILDIR_FOLDER(object);*/
 118 }
 119
 120 CamelType camel_maildir_folder_get_type(void)
 121 {
 122         static CamelType camel_maildir_folder_type = CAMEL_INVALID_TYPE;
 123
 124         if (camel_maildir_folder_type == CAMEL_INVALID_TYPE) {
 125                 camel_maildir_folder_type = camel_type_register(CAMEL_LOCAL_FOLDER_TYPE, "CamelMaildirFolder",
 126                                                            sizeof(CamelMaildirFolder),
 127                                                            sizeof(CamelMaildirFolderClass),
 128                                                            (CamelObjectClassInitFunc) camel_maildir_folder_class_init,
 129                                                            NULL,
 130                                                            (CamelObjectInitFunc) maildir_init,
 131                                                            (CamelObjectFinalizeFunc) maildir_finalize);
 132         }
 133
 134         return camel_maildir_folder_type;
 135 }
 136
 137 CamelFolder *
 138 camel_maildir_folder_new(CamelStore *parent_store, const char *full_name, guint32 flags, CamelException *ex)
 139 {
 140         CamelFolder *folder;
 141
 142         d(printf("Creating maildir folder: %s\n", full_name));
 143
 144         folder = (CamelFolder *)camel_object_new(CAMEL_MAILDIR_FOLDER_TYPE);
 145
 146         if (parent_store->flags & CAMEL_STORE_FILTER_INBOX
 147             && strcmp(full_name, ".") == 0)
 148                 folder->folder_flags |= CAMEL_FOLDER_FILTER_RECENT;
 149
 150         folder = (CamelFolder *)camel_local_folder_construct((CamelLocalFolder *)folder,
 151                                                              parent_store, full_name, flags, ex);
 152
 153         return folder;
 154 }
 155
 156 static CamelLocalSummary *maildir_create_summary(CamelLocalFolder *lf, const char *path, const char *folder, CamelIndex *index)
 157 {
 158         return (CamelLocalSummary *)camel_maildir_summary_new((CamelFolder *)lf, path, folder, index);
 159 }
 160
 161 static void
 162 maildir_append_message (CamelFolder *folder, CamelMimeMessage *message, const CamelMessageInfo *info, char **appended_uid, CamelException *ex)
 163 {
 164         CamelMaildirFolder *maildir_folder = (CamelMaildirFolder *)folder;
 165         CamelLocalFolder *lf = (CamelLocalFolder *)folder;
 166         CamelStream *output_stream;
 167         CamelMessageInfo *mi;
 168         CamelMaildirMessageInfo *mdi;
 169         char *name, *dest = NULL;
 170
 171         d(printf("Appending message\n"));
 172
 173         /* add it to the summary/assign the uid, etc */
 174         mi = camel_local_summary_add((CamelLocalSummary *)folder->summary, message, info, lf->changes, ex);
 175         if (camel_exception_is_set (ex))
 176                 return;
 177
 178         mdi = (CamelMaildirMessageInfo *)mi;
 179
 180         d(printf("Appending message: uid is %s filename is %s\n", camel_message_info_uid(mi), mdi->filename));
 181
 182         /* write it out to tmp, use the uid we got from the summary */
 183         name = g_strdup_printf ("%s/tmp/%s", lf->folder_path, camel_message_info_uid(mi));
 184         output_stream = camel_stream_fs_new_with_name (name, O_WRONLY|O_CREAT, 0600);
 185         if (output_stream == NULL)
 186                 goto fail_write;
 187
 188         if (camel_data_wrapper_write_to_stream ((CamelDataWrapper *)message, output_stream) == -1
 189             || camel_stream_close (output_stream) == -1)
 190                 goto fail_write;
 191
 192         /* now move from tmp to cur (bypass new, does it matter?) */
 193         dest = g_strdup_printf("%s/cur/%s", lf->folder_path, camel_maildir_info_filename (mdi));
 194         if (rename (name, dest) == -1)
 195                 goto fail_write;
 196
 197         g_free (dest);
 198         g_free (name);
 199
 200         camel_object_trigger_event (CAMEL_OBJECT (folder), "folder_changed",
 201                                     ((CamelLocalFolder *)maildir_folder)->changes);
 202         camel_folder_change_info_clear (((CamelLocalFolder *)maildir_folder)->changes);
 203
 204         if (appended_uid)
 205                 *appended_uid = g_strdup(camel_message_info_uid(mi));
 206
 207         return;
 208
 209  fail_write:
 210
 211         /* remove the summary info so we are not out-of-sync with the mh folder */
 212         camel_folder_summary_remove_uid (CAMEL_FOLDER_SUMMARY (folder->summary),
 213                                          camel_message_info_uid (mi));
 214
 215         if (errno == EINTR)
 216                 camel_exception_set (ex, CAMEL_EXCEPTION_USER_CANCEL,
 217                                      _("Maildir append message canceled"));
 218         else
 219                 camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
 220                                       _("Cannot append message to maildir folder: %s: %s"),
 221                                       name, g_strerror (errno));
 222
 223         if (output_stream) {
 224                 camel_object_unref (CAMEL_OBJECT (output_stream));
 225                 unlink (name);
 226         }
 227
 228         g_free (name);
 229         g_free (dest);
 230 }
 231
 232 static CamelMimeMessage *maildir_get_message(CamelFolder * folder, const gchar * uid, CamelException * ex)
 233 {
 234         CamelLocalFolder *lf = (CamelLocalFolder *)folder;
 235         CamelStream *message_stream = NULL;
 236         CamelMimeMessage *message = NULL;
 237         CamelMessageInfo *info;
 238         char *name;
 239         CamelMaildirMessageInfo *mdi;
 240
 241         d(printf("getting message: %s\n", uid));
 242
 243         /* get the message summary info */
 244         if ((info = camel_folder_summary_uid(folder->summary, uid)) == NULL) {
 245                 camel_exception_setv(ex, CAMEL_EXCEPTION_FOLDER_INVALID_UID,
 246                                      _("Cannot get message: %s from folder %s\n  %s"),
 247                                      uid, lf->folder_path, _("No such message"));
 248                 return NULL;
 249         }
 250
 251         mdi = (CamelMaildirMessageInfo *)info;
 252
 253         /* what do we do if the message flags (and :info data) changes?  filename mismatch - need to recheck I guess */
 254         name = g_strdup_printf("%s/cur/%s", lf->folder_path, camel_maildir_info_filename(mdi));
 255
 256         camel_message_info_free(info);
 257
 258         if ((message_stream = camel_stream_fs_new_with_name(name, O_RDONLY, 0)) == NULL) {
 259                 camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
 260                                      _("Cannot get message: %s from folder %s\n  %s"),
 261                                      uid, lf->folder_path, g_strerror(errno));
 262                 g_free(name);
 263                 return NULL;
 264         }
 265
 266         message = camel_mime_message_new();
 267         if (camel_data_wrapper_construct_from_stream((CamelDataWrapper *)message, message_stream) == -1) {
 268                 camel_exception_setv(ex, (errno==EINTR)?CAMEL_EXCEPTION_USER_CANCEL:CAMEL_EXCEPTION_SYSTEM,
 269                                      _("Cannot get message: %s from folder %s\n  %s"),
 270                                      uid, lf->folder_path, _("Invalid message contents"));
 271                 g_free(name);
 272                 camel_object_unref((CamelObject *)message_stream);
 273                 camel_object_unref((CamelObject *)message);
 274                 return NULL;
 275
 276         }
 277         camel_object_unref((CamelObject *)message_stream);
 278         g_free(name);
 279
 280         return message;
 281 }