path: root/mail/importers/evolution-outlook-importer.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* evolution-outlook-importer.c
 *
 * Authors: Iain Holmes <iain@ximian.com>
 *
 * Copyright (C) 2001  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 <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>

#include <stdio.h>
#include <ctype.h>
#include <string.h>

#include <gtk/gtkhbox.h>
#include <gtk/gtklabel.h>
#include <gtk/gtkmessagedialog.h>
#include <gtk/gtkprogressbar.h>

#include <bonobo/bonobo-control.h>

#include <camel/camel-exception.h>
#include <camel/camel-folder.h>
#include <camel/camel-stream-mem.h>
#include <camel/camel-store.h>

#include <importer/evolution-importer.h>
#include <importer/GNOME_Evolution_Importer.h>

#include "mail/em-folder-selection-button.h"

#include "mail/mail-component.h"
#include "mail/mail-mt.h"
#include "mail/mail-tools.h"

#include "mail-importer.h"

static int mail_importer_import_outlook(const char *path, const char *folderuri, CamelOperation *cancel);

typedef struct {
    EvolutionImporter *ii;

    GMutex *status_lock;
    char *status_what;
    int status_pc;
    int status_timeout_id;
    CamelOperation *cancel; /* cancel/status port */

    GtkWidget *selector;
    GtkWidget *label;
    GtkWidget *progressbar;
    GtkWidget *dialog;

    char *uri;
} OutlookImporter;

struct oe_msg_segmentheader {
    gint32 self;
    gint32 increase;
    gint32 include;
    gint32 next;
    gint32 usenet;
};

typedef struct oe_msg_segmentheader oe_msg_segmentheader;


/* EvolutionImporter methods */

/* Based on code from liboe 0.92 (STABLE)
   Copyright (C) 2000 Stephan B. Nedregård (stephan@micropop.com)
   Modified 2001 Iain Holmes  <iain@ximian.com>
   Copyright (C) 2001 Ximian, Inc. */

static void
process_item_fn(EvolutionImporter *eimporter, CORBA_Object listener, void *data, CORBA_Environment *ev)
{
    GNOME_Evolution_ImporterListener_ImporterResult result;
#if 0
    if (camel_exception_is_set(importer->ex))
        result = GNOME_Evolution_ImporterListener_BAD_FILE;
    else
#endif
        result = GNOME_Evolution_ImporterListener_OK;

    GNOME_Evolution_ImporterListener_notifyResult(listener, result, FALSE, ev);
    bonobo_object_unref(BONOBO_OBJECT(eimporter));
}


/* EvolutionImporterFactory methods */

static gboolean
support_format_fn(EvolutionImporter *importer, const char *filename, void *data)
{
    FILE *handle;
    guint32 signature[4];
    int ok;

    /* Outlook Express sniffer.
       Taken from liboe 0.92 (STABLE)
       Copyright (C) 2000 Stephan B. Nedregård (stephan@micropop.com) */

    handle = fopen (filename, "rb");
    if (handle == NULL)
        return FALSE; /* Can't open file: Can't support it :) */

      /* SIGNATURE */
    fread (&signature, 16, 1, handle);
    /* This needs testing */
#if G_BYTE_ORDER == G_BIG_ENDIAN
    signature[0] = GUINT32_TO_BE(signature[0]);
    signature[1] = GUINT32_TO_BE(signature[1]);
    signature[2] = GUINT32_TO_BE(signature[2]);
    signature[3] = GUINT32_TO_BE(signature[3]);
#endif
    ok = ((signature[0]!=0xFE12ADCF /* OE 5 & OE 5 BETA SIGNATURE */
           || signature[1]!=0x6F74FDC5
           || signature[2]!=0x11D1E366
           || signature[3]!=0xC0004E9A)
          && (signature[0]==0x36464D4A /* OE4 SIGNATURE */
          && signature[1]==0x00010003));

    fclose (handle);
    return ok; /* Can't handle OE 5 yet */
}

/* Note the similarity of most of this code to evolution-mbox-importer.
   Yes it should be subclassed, or something ... */
static void
importer_destroy_cb(void *data, GObject *object)
{
    OutlookImporter *importer = data;

    if (importer->status_timeout_id)
        g_source_remove(importer->status_timeout_id);
    g_free(importer->status_what);
    g_mutex_free(importer->status_lock);

    if (importer->dialog)
        gtk_widget_destroy(importer->dialog);

    g_free(importer);
}

static void
outlook_status(CamelOperation *op, const char *what, int pc, void *data)
{
    OutlookImporter *importer = data;

    if (pc == CAMEL_OPERATION_START)
        pc = 0;
    else if (pc == CAMEL_OPERATION_END)
        pc = 100;

    g_mutex_lock(importer->status_lock);
    g_free(importer->status_what);
    importer->status_what = g_strdup(what);
    importer->status_pc = pc;
    g_mutex_unlock(importer->status_lock);
}

static gboolean
outlook_status_timeout(void *data)
{
    OutlookImporter *importer = data;
    int pc;
    char *what;

    if (!importer->status_what)
        return TRUE;

    g_mutex_lock(importer->status_lock);
    what = importer->status_what;
    importer->status_what = NULL;
    pc = importer->status_pc;
    g_mutex_unlock(importer->status_lock);

    gtk_progress_bar_set_fraction((GtkProgressBar *)importer->progressbar, (gfloat)(pc/100.0));
    gtk_progress_bar_set_text((GtkProgressBar *)importer->progressbar, what);
    
    return TRUE;
}

static void
outlook_importer_response(GtkWidget *w, guint button, void *data)
{
    OutlookImporter *importer = data;

    if (button == GTK_RESPONSE_CANCEL
        && importer->cancel)
        camel_operation_cancel(importer->cancel);
}

static gboolean
load_file_fn(EvolutionImporter *eimporter, const char *filename, void *data)
{
    OutlookImporter *importer = data;

    importer->dialog = gtk_message_dialog_new(NULL, 0/*GTK_DIALOG_NO_SEPARATOR*/,
                          GTK_MESSAGE_INFO, GTK_BUTTONS_CANCEL,
                          _("Importing `%s'"), filename);
    gtk_window_set_title (GTK_WINDOW (importer->dialog), _("Importing..."));

    importer->label = gtk_label_new (_("Please wait"));
    importer->progressbar = gtk_progress_bar_new ();
    gtk_box_pack_start (GTK_BOX (GTK_DIALOG (importer->dialog)->vbox), importer->label, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (GTK_DIALOG (importer->dialog)->vbox), importer->progressbar, FALSE, FALSE, 0);
    g_signal_connect(importer->dialog, "response", G_CALLBACK(outlook_importer_response), importer);
    gtk_widget_show_all(importer->dialog);

    importer->status_timeout_id = g_timeout_add(100, outlook_status_timeout, importer);
    importer->cancel = camel_operation_new(outlook_status, importer);

    mail_msg_wait(mail_importer_import_outlook(filename, importer->uri, importer->cancel));

    camel_operation_unref(importer->cancel);
    g_source_remove(importer->status_timeout_id);
    importer->status_timeout_id = 0;

    return TRUE;
}

BonoboObject *
outlook_importer_new(void)
{
    EvolutionImporter *importer;
    OutlookImporter *oli;

    oli = g_new0 (OutlookImporter, 1);
    oli->status_lock = g_mutex_new();
    importer = evolution_importer_new (NULL, support_format_fn, load_file_fn, process_item_fn, NULL, oli);
    g_object_weak_ref((GObject *)importer, importer_destroy_cb, oli);

    return BONOBO_OBJECT (importer);
}

struct _import_outlook_msg {
    struct _mail_msg msg;
    
    char *path;
    char *uri;
    CamelOperation *cancel;
};

static char *
import_outlook_describe(struct _mail_msg *mm, int complete)
{
    return g_strdup (_("Importing mailbox"));
}

static void
import_outlook_import(struct _mail_msg *mm)
{
    struct _import_outlook_msg *m = (struct _import_outlook_msg *) mm;
    struct stat st;
    CamelFolder *folder;

    if (stat(m->path, &st) == -1) {
        g_warning("cannot find source file to import '%s': %s", m->path, g_strerror(errno));
        return;
    }

    if (m->uri == NULL || m->uri[0] == 0)
        folder = mail_component_get_folder(NULL, MAIL_COMPONENT_FOLDER_INBOX);
    else
        folder = mail_tool_uri_to_folder(m->uri, CAMEL_STORE_FOLDER_CREATE, &mm->ex);

    if (folder == NULL)
        return;

    if (S_ISREG(st.st_mode)) {
        CamelOperation *oldcancel = NULL;
        CamelMessageInfo *info;
        GByteArray *buffer;
        int fd;
        off_t pos;

        fd = open(m->path, O_RDONLY);
        if (fd == -1) {
            g_warning("cannot find source file to import '%s': %s", m->path, g_strerror(errno));
            goto fail;
        }

        if (lseek(fd, 0x54, SEEK_SET) == -1)
            goto fail;

        if (m->cancel)
            oldcancel = camel_operation_register(m->cancel);

        camel_folder_freeze(folder);

        buffer = g_byte_array_new();
        pos = 0x54;
        do {
            oe_msg_segmentheader header;
            int pc;
            size_t len;
            CamelStream *mem;
            CamelMimeMessage *msg;

            if (st.st_size > 0)
                pc = (int)(100.0 * ((double)pos / (double)st.st_size));
            camel_operation_progress(NULL, pc);

            if (read(fd, &header, sizeof(header)) != sizeof(header))
                goto fail2;

            pos += sizeof(header);

#if G_BYTE_ORDER == G_BIG_ENDIAN
            header.include = GUINT32_TO_BE(header.include);
#endif
            /* the -4 is some magical value */
            len = header.include - sizeof(header) - 4;
            /* sanity check */
            if (len > (pos + st.st_size))
                goto fail2;
            g_byte_array_set_size(buffer, len);
            if (read(fd, buffer->data, len) != len)
                goto fail2;

            pos += len;

            mem = camel_stream_mem_new();
            camel_stream_mem_set_byte_array((CamelStreamMem *)mem, buffer);

            msg = camel_mime_message_new();
            if (camel_data_wrapper_construct_from_stream((CamelDataWrapper *)msg, mem) == -1) {
                camel_object_unref(msg);
                camel_object_unref(mem);
                goto fail2;
            }

            info = camel_message_info_new();
            /* any headers to read? */

            camel_folder_append_message(folder, msg, info, NULL, &mm->ex);

            camel_message_info_free(info);
            camel_object_unref(msg);
            camel_object_unref(mem);
        } while (!camel_exception_is_set(&mm->ex) && pos < st.st_size);

        camel_folder_sync(folder, FALSE, NULL);
        camel_folder_thaw(folder);
        camel_operation_end(NULL);
    fail2:
        /* TODO: these api's are a bit weird, registering the old is the same as deregistering */
        if (m->cancel)
            camel_operation_register(oldcancel);
        g_byte_array_free(buffer, TRUE);
    }
fail:
    camel_object_unref(folder);
}

static void
import_outlook_done(struct _mail_msg *mm)
{
}

static void
import_outlook_free (struct _mail_msg *mm)
{
    struct _import_outlook_msg *m = (struct _import_outlook_msg *)mm;
    
    if (m->cancel)
        camel_operation_unref(m->cancel);
    g_free(m->uri);
    g_free(m->path);
}

static struct _mail_msg_op import_outlook_op = {
    import_outlook_describe,
    import_outlook_import,
    import_outlook_done,
    import_outlook_free,
};

static int
mail_importer_import_outlook(const char *path, const char *folderuri, CamelOperation *cancel)
{
    struct _import_outlook_msg *m;
    int id;

    m = mail_msg_new(&import_outlook_op, NULL, sizeof (*m));
    m->path = g_strdup(path);
    m->uri = g_strdup(folderuri);
    if (cancel) {
        m->cancel = cancel;
        camel_operation_ref(cancel);
    }

    id = m->msg.seq;
    e_thread_put(mail_thread_queued, (EMsg *)m);

    return id;
}