path: root/camel/providers/local/camel-maildir-folder.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; fill-column: 160 -*-
 *
 * Authors: Michael Zucchi <notzed@ximian.com>
 *
 * Copyright (C) 1999, 2003 Ximian Inc.
 *
 * This program is free software; you can redistribute it and/or 
 * modify it under the terms of version 2 of the GNU General Public 
 * License as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdlib.h>
#include <sys/types.h>
#include <dirent.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>

#include "camel-maildir-folder.h"
#include "camel-maildir-store.h"
#include "camel-stream-fs.h"
#include "camel-maildir-summary.h"
#include "camel-data-wrapper.h"
#include "camel-mime-message.h"
#include "camel-exception.h"

#define d(x) /*(printf("%s(%d): ", __FILE__, __LINE__),(x))*/

static CamelLocalFolderClass *parent_class = NULL;

/* Returns the class for a CamelMaildirFolder */
#define CMAILDIRF_CLASS(so) CAMEL_MAILDIR_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
#define CF_CLASS(so) CAMEL_FOLDER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
#define CMAILDIRS_CLASS(so) CAMEL_STORE_CLASS (CAMEL_OBJECT_GET_CLASS(so))

static CamelLocalSummary *maildir_create_summary(const char *path, const char *folder, CamelIndex *index);

static void maildir_append_message(CamelFolder * folder, CamelMimeMessage * message, const CamelMessageInfo *info, char **appended_uid, CamelException * ex);
static CamelMimeMessage *maildir_get_message(CamelFolder * folder, const gchar * uid, CamelException * ex);

static void maildir_finalize(CamelObject * object);

static int
maildir_folder_getv(CamelObject *object, CamelException *ex, CamelArgGetV *args)
{
    CamelFolder *folder = (CamelFolder *)object;
    int i;
    guint32 tag;

    for (i=0;i<args->argc;i++) {
        CamelArgGet *arg = &args->argv[i];

        tag = arg->tag;

        switch (tag & CAMEL_ARG_TAG) {
        case CAMEL_FOLDER_ARG_NAME:
            if (!strcmp(folder->full_name, "."))
                *arg->ca_str = _("Inbox");
            else
                *arg->ca_str = folder->name;
            break;
        default:
            continue;
        }

        arg->tag = (tag & CAMEL_ARG_TYPE) | CAMEL_ARG_IGNORE;
    }

    return ((CamelObjectClass *)parent_class)->getv(object, ex, args);
}

static void camel_maildir_folder_class_init(CamelObjectClass * camel_maildir_folder_class)
{
    CamelFolderClass *camel_folder_class = CAMEL_FOLDER_CLASS(camel_maildir_folder_class);
    CamelLocalFolderClass *lclass = (CamelLocalFolderClass *)camel_maildir_folder_class;

    parent_class = CAMEL_LOCAL_FOLDER_CLASS (camel_type_get_global_classfuncs(camel_local_folder_get_type()));

    /* virtual method definition */

    /* virtual method overload */
    ((CamelObjectClass *)camel_folder_class)->getv = maildir_folder_getv;

    camel_folder_class->append_message = maildir_append_message;
    camel_folder_class->get_message = maildir_get_message;

    lclass->create_summary = maildir_create_summary;
}

static void maildir_init(gpointer object, gpointer klass)
{
    /*CamelFolder *folder = object;
      CamelMaildirFolder *maildir_folder = object;*/
}

static void maildir_finalize(CamelObject * object)
{
    /*CamelMaildirFolder *maildir_folder = CAMEL_MAILDIR_FOLDER(object);*/
}

CamelType camel_maildir_folder_get_type(void)
{
    static CamelType camel_maildir_folder_type = CAMEL_INVALID_TYPE;

    if (camel_maildir_folder_type == CAMEL_INVALID_TYPE) {
        camel_maildir_folder_type = camel_type_register(CAMEL_LOCAL_FOLDER_TYPE, "CamelMaildirFolder",
                               sizeof(CamelMaildirFolder),
                               sizeof(CamelMaildirFolderClass),
                               (CamelObjectClassInitFunc) camel_maildir_folder_class_init,
                               NULL,
                               (CamelObjectInitFunc) maildir_init,
                               (CamelObjectFinalizeFunc) maildir_finalize);
    }
 
    return camel_maildir_folder_type;
}

CamelFolder *
camel_maildir_folder_new(CamelStore *parent_store, const char *full_name, guint32 flags, CamelException *ex)
{
    CamelFolder *folder;

    d(printf("Creating maildir folder: %s\n", full_name));

    folder = (CamelFolder *)camel_object_new(CAMEL_MAILDIR_FOLDER_TYPE);

    if (parent_store->flags & CAMEL_STORE_FILTER_INBOX
        && strcmp(full_name, ".") == 0)
        folder->folder_flags |= CAMEL_FOLDER_FILTER_RECENT;

    folder = (CamelFolder *)camel_local_folder_construct((CamelLocalFolder *)folder,
                                 parent_store, full_name, flags, ex);

    return folder;
}

static CamelLocalSummary *maildir_create_summary(const char *path, const char *folder, CamelIndex *index)
{
    return (CamelLocalSummary *)camel_maildir_summary_new(path, folder, index);
}

static void
maildir_append_message (CamelFolder *folder, CamelMimeMessage *message, const CamelMessageInfo *info, char **appended_uid, CamelException *ex)
{
    CamelMaildirFolder *maildir_folder = (CamelMaildirFolder *)folder;
    CamelLocalFolder *lf = (CamelLocalFolder *)folder;
    CamelStream *output_stream;
    CamelMessageInfo *mi;
    CamelMaildirMessageInfo *mdi;
    char *name, *dest = NULL;
    
    d(printf("Appending message\n"));

    /* add it to the summary/assign the uid, etc */
    mi = camel_local_summary_add((CamelLocalSummary *)folder->summary, message, info, lf->changes, ex);
    if (camel_exception_is_set (ex))
        return;
    
    mdi = (CamelMaildirMessageInfo *)mi;

    d(printf("Appending message: uid is %s filename is %s\n", camel_message_info_uid(mi), mdi->filename));

    /* write it out to tmp, use the uid we got from the summary */
    name = g_strdup_printf ("%s/tmp/%s", lf->folder_path, camel_message_info_uid(mi));
    output_stream = camel_stream_fs_new_with_name (name, O_WRONLY|O_CREAT, 0600);
    if (output_stream == NULL)
        goto fail_write;
    
    if (camel_data_wrapper_write_to_stream ((CamelDataWrapper *)message, output_stream) == -1
        || camel_stream_close (output_stream) == -1)
        goto fail_write;
    
    /* now move from tmp to cur (bypass new, does it matter?) */
    dest = g_strdup_printf("%s/cur/%s", lf->folder_path, camel_maildir_info_filename (mdi));
    if (rename (name, dest) == 1)
        goto fail_write;

    g_free (dest);
    g_free (name);
    
    camel_object_trigger_event (CAMEL_OBJECT (folder), "folder_changed",
                    ((CamelLocalFolder *)maildir_folder)->changes);
    camel_folder_change_info_clear (((CamelLocalFolder *)maildir_folder)->changes);
    
    if (appended_uid)
        *appended_uid = g_strdup(camel_message_info_uid(mi));

    return;
    
 fail_write:
    
    /* remove the summary info so we are not out-of-sync with the mh folder */
    camel_folder_summary_remove_uid (CAMEL_FOLDER_SUMMARY (folder->summary),
                     camel_message_info_uid (mi));
    
    if (errno == EINTR)
        camel_exception_set (ex, CAMEL_EXCEPTION_USER_CANCEL,
                     _("Maildir append message cancelled"));
    else
        camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
                      _("Cannot append message to maildir folder: %s: %s"),
                      name, g_strerror (errno));
    
    if (output_stream) {
        camel_object_unref (CAMEL_OBJECT (output_stream));
        unlink (name);
    }
    
    g_free (name);
    g_free (dest);
}

static CamelMimeMessage *maildir_get_message(CamelFolder * folder, const gchar * uid, CamelException * ex)
{
    CamelLocalFolder *lf = (CamelLocalFolder *)folder;
    CamelStream *message_stream = NULL;
    CamelMimeMessage *message = NULL;
    CamelMessageInfo *info;
    char *name;
    CamelMaildirMessageInfo *mdi;

    d(printf("getting message: %s\n", uid));

    /* get the message summary info */
    if ((info = camel_folder_summary_uid(folder->summary, uid)) == NULL) {
        camel_exception_setv(ex, CAMEL_EXCEPTION_FOLDER_INVALID_UID,
                     _("Cannot get message: %s from folder %s\n  %s"),
                     uid, lf->folder_path, _("No such message"));
        return NULL;
    }

    mdi = (CamelMaildirMessageInfo *)info;

    /* what do we do if the message flags (and :info data) changes?  filename mismatch - need to recheck I guess */
    name = g_strdup_printf("%s/cur/%s", lf->folder_path, camel_maildir_info_filename(mdi));

    camel_folder_summary_info_free(folder->summary, info);

    if ((message_stream = camel_stream_fs_new_with_name(name, O_RDONLY, 0)) == NULL) {
        camel_exception_setv(ex, CAMEL_EXCEPTION_SYSTEM,
                     _("Cannot get message: %s from folder %s\n  %s"),
                     uid, lf->folder_path, g_strerror(errno));
        g_free(name);
        return NULL;
    }

    message = camel_mime_message_new();
    if (camel_data_wrapper_construct_from_stream((CamelDataWrapper *)message, message_stream) == -1) {
        camel_exception_setv(ex, (errno==EINTR)?CAMEL_EXCEPTION_USER_CANCEL:CAMEL_EXCEPTION_SYSTEM,
                     _("Cannot get message: %s from folder %s\n  %s"),
                     uid, lf->folder_path, _("Invalid message contents"));
        g_free(name);
        camel_object_unref((CamelObject *)message_stream);
        camel_object_unref((CamelObject *)message);
        return NULL;

    }
    camel_object_unref((CamelObject *)message_stream);
    g_free(name);

    return message;
}