path: root/mail/importers/netscape-importer.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* netscape-importer.c
 * 
 * Authors: 
 *    Iain Holmes  <iain@ximian.com>
 *
 * Copyright 2001 Ximian, Inc. (http://www.ximian.com)
 *
 * This program is free software; you can redistribute it and/or 
 * modify it under the terms of the GNU General Public License as 
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * 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 <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <dirent.h>

#include <glib.h>

#include <bonobo/bonobo-object.h>
#include <bonobo/bonobo-generic-factory.h>
#include <camel/camel-mime-message.h>
#include <camel/camel-mime-part.h>
#include <camel/camel-exception.h>

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

#include "mail-importer.h"
#include "mail-tools.h"

static char *nsmail_dir = NULL;

extern char *evolution_dir;

#define NETSCAPE_INTELLIGENT_IMPORTER_IID "OAFIID:GNOME_Evolution_Mail_Netscape_Intelligent_Importer_Factory"
#define MBOX_IMPORTER_IID "OAFIID:GNOME_Evolution_Mail_Mbox_ImporterFactory"
#define KEY "netscape-mail-imported"

/*#define SUPER_IMPORTER_DEBUG*/
#ifdef SUPER_IMPORTER_DEBUG
#define d(x) x
#else
#define d(x)
#endif

typedef struct {
    MailImporter importer;
    GList *dir_list;

    int num;
    CamelMimeParser *mp;
    BonoboListener *listener;
} NetscapeImporter;

void mail_importer_module_init (void);
void g_module_unload (void);

static gboolean
netscape_import_mbox (CamelFolder *folder,
              const char *filename)
{
    gboolean done = FALSE;
    CamelException *ex;
    CamelMimeParser *mp;
    int fd, n = 0;

    fd = open (filename, O_RDONLY);
    if (fd == -1) {
        g_warning ("Cannot open %s", filename);
        return FALSE;
    }

    camel_object_ref (CAMEL_OBJECT (folder));
    camel_folder_freeze (folder);

    ex = camel_exception_new ();
    mp = camel_mime_parser_new ();
    camel_mime_parser_scan_from (mp, TRUE);
    if (camel_mime_parser_init_with_fd (mp, fd) == -1) {
        g_warning ("Unable to process file %s", filename);
        camel_object_unref (CAMEL_OBJECT (mp));
        camel_folder_thaw (folder);
        camel_object_unref (CAMEL_OBJECT (folder));
        return FALSE;
    }

    while (camel_mime_parser_step (mp, 0, 0) == HSCAN_FROM) {
        /* Import the next message */
        CamelMimeMessage *msg;
        CamelMessageInfo *info;

        msg = camel_mime_message_new ();
        if (camel_mime_part_construct_from_parser (CAMEL_MIME_PART (msg),
                               mp) == -1) {
            g_warning ("Failed message %d", n);
            camel_object_unref (CAMEL_OBJECT (msg));
            done = TRUE;
        }

        info = g_new0 (CamelMessageInfo, 1);
        camel_folder_append_message (folder, msg, info, ex);
        g_free (info);
        camel_object_unref (CAMEL_OBJECT (msg));
        if (camel_exception_is_set (ex)) {
            g_warning ("Failed message %d", n);
            done = TRUE;
        }

        if (!done) {
            n++;
            camel_mime_parser_step (mp, 0, 0);
        }
    }

    camel_folder_sync (folder, FALSE, ex);
    camel_folder_thaw (folder);
    camel_object_unref (CAMEL_OBJECT (folder));
    done = TRUE;

    camel_exception_free (ex);
    return done;
}

static void
netscape_clean_up (void)
{
    if (nsmail_dir == NULL)
        return;

    g_free (nsmail_dir);
    nsmail_dir = NULL;
}

static gboolean
netscape_can_import (EvolutionIntelligentImporter *ii,
             void *closure)
{
    char *nsprefs;
    FILE *prefs_handle;
    char *key;

    /* Already imported */
    key = g_strdup_printf ("=%s/config/Mail=/importers/", evolution_dir);
    gnome_config_push_prefix (key);
    g_free (key);

    if (gnome_config_get_bool (KEY) == TRUE) {
        gnome_config_pop_prefix ();
        return FALSE;
    }
    gnome_config_pop_prefix ();

    nsprefs = gnome_util_prepend_user_home (".netscape/preferences.js");
    prefs_handle = fopen (nsprefs, "r");
    g_free (nsprefs);

    if (prefs_handle == NULL) {
        d(g_warning ("No .netscape/preferences.js"));
        return FALSE;
    }

    /* Find the user mail dir */
    while (1) {
        char line[4096];

        fgets (line, 4096, prefs_handle);
        if (line == NULL) {
            g_warning ("No mail.directory entry");
            fclose (prefs_handle);
            return FALSE;
        }

        if (strstr (line, "mail.directory") != NULL) {
            char *sep, *start, *end;
            /* Found the line */
            
            sep = strchr (line, ',');
            if (sep == NULL) {
                g_warning ("Bad line %s", line);
                fclose (prefs_handle);
                return FALSE;
            }

            start = strchr (sep, '\"') + 1;
            if (start == NULL) {
                g_warning ("Bad line %s", line);
                fclose (prefs_handle);
                return FALSE;
            }

            end = strrchr (sep, '\"');
            if (end == NULL) {
                g_warning ("Bad line %s", line);
                fclose (prefs_handle);
                return FALSE;
            }
            
            nsmail_dir = g_strndup (start, end - start);
            d(g_warning ("Got nsmail_dir: %s", nsmail_dir));
            fclose (prefs_handle);
            return TRUE;
        }
    }
}

static void
netscape_import_file (NetscapeImporter *importer,
              const char *path,
              const char *fullpath)
{
    char *protocol;
    CamelException *ex;
    CamelFolder *folder;

    /* Do import */
    d(g_warning ("Importing %s as %s\n", filename, fullpath));

    ex = camel_exception_new ();
    protocol = g_strconcat ("file://", fullpath, NULL);
    folder = mail_tool_uri_to_folder (protocol, ex);
    if (camel_exception_is_set (ex)) {
        g_free (protocol);
        camel_exception_free (ex);
        return;
    }

    g_free (protocol);

    if (folder == NULL) {
        g_warning ("Folder for %s is NULL", fullpath);
        camel_exception_free (ex);
        return;
    }

    camel_exception_free (ex);

    netscape_import_mbox (folder, path);
}

typedef struct {
    NetscapeImporter *importer;
    char *parent;
    char *path;
    char *foldername;
} NetscapeCreateDirectoryData;

static void
netscape_dir_created (BonoboListener *listener,
              const char *event_name,
              const BonoboArg *event_data,
              CORBA_Environment *ev,
              NetscapeImporter *importer)
{
    EvolutionStorageResult storage_result;
    NetscapeCreateDirectoryData *data;
    GList *l;
    GNOME_Evolution_Storage_FolderResult *result;
    char *fullpath;
    
    if (strcmp (event_name, "evolution-shell:folder_created") != 0) {
        return; /* Unknown event notification */
    }

    result = event_data->_value;
    storage_result = result->result;
    fullpath = result->path;

    g_warning ("path: %s\tresult: %d", fullpath, storage_result);

    l = importer->dir_list;
    importer->dir_list = g_list_remove_link (importer->dir_list, l);
    data = l->data;
    g_list_free_1 (l);

    /* Import the file */
    /* We got the folder, so try to import the file into it. */
    if (fullpath != NULL || *fullpath != '\0')
        netscape_import_file (data->importer, data->path, fullpath);

    g_free (data->parent);
    g_free (data->path);
    g_free (data->foldername);
    g_free (data);

    if (importer->dir_list) {
        /* Do the next in the list */
        data = importer->dir_list->data;
        mail_importer_create_folder (data->parent, data->foldername, 
                         NULL, importer->listener);
    }
}

static char *
maybe_replace_name (const char *original_name)
{
    if (strcmp (original_name, "Trash") == 0) {
        return g_strdup ("Netscape-Trash"); /* Trash is an invalid name */
    } else if (strcmp (original_name, "Unsent Messages") == 0) {
        return g_strdup ("Outbox");
    } 

    return g_strdup (original_name);
}

/* This function basically flattens the tree structure.
   It makes a list of all the directories that are to be imported. */
static void
scan_dir (NetscapeImporter *importer,
      const char *orig_parent,
      const char *dirname)
{
    DIR *nsmail;
    struct stat buf;
    struct dirent *current;

    nsmail = opendir (dirname);
    if (nsmail == NULL) {
        d(g_warning ("Could not open %s\nopendir returned: %s", 
                 dirname, g_strerror (errno)));
        return;
    }

    current = readdir (nsmail);
    while (current) {
        char *fullname, *foldername;

        /* Ignore things which start with . 
           which should be ., .., and the summaries. */
        if (current->d_name[0] =='.') {
            current = readdir (nsmail);
            continue;
        }

        if (*orig_parent == '/') {
            foldername = maybe_replace_name (current->d_name);
        } else {
            foldername = g_strdup (current->d_name);
        }

        fullname = g_concat_dir_and_file (dirname, current->d_name);
        if (stat (fullname, &buf) == -1) {
            d(g_warning ("Could not stat %s\nstat returned:%s",
                     fullname, g_strerror (errno)));
            current = readdir (nsmail);
            g_free (fullname);
            continue;
        }

        if (S_ISREG (buf.st_mode)) {
            char *sbd, *parent;
            NetscapeCreateDirectoryData *data;

            d(g_print ("File: %s\n", fullname));

            data = g_new0 (NetscapeCreateDirectoryData, 1);
            data->importer = importer;
            data->parent = g_strdup (orig_parent);
            data->path = g_strdup (fullname);
            data->foldername = g_strdup (foldername);

            importer->dir_list = g_list_append (importer->dir_list,
                                data);

    
            parent = g_concat_dir_and_file (orig_parent, 
                            data->foldername);
            
            /* Check if a .sbd folder exists */
            sbd = g_strconcat (fullname, ".sbd", NULL);
            if (g_file_exists (sbd)) {
                scan_dir (importer, parent, sbd);
            }
            
            g_free (parent);
            g_free (sbd);
        } 
        
        g_free (fullname);
        g_free (foldername);
        current = readdir (nsmail);
    }
}

static void
netscape_create_structure (EvolutionIntelligentImporter *ii,
               void *closure)
{
    NetscapeImporter *importer = closure;
    NetscapeCreateDirectoryData *data;
    char *key;

    g_return_if_fail (nsmail_dir != NULL);

    scan_dir (importer, "/", nsmail_dir);

    importer->listener = bonobo_listener_new (NULL, NULL);
    gtk_signal_connect (GTK_OBJECT (importer->listener), "event_notify",
                GTK_SIGNAL_FUNC (netscape_dir_created), importer);
    data = importer->dir_list->data;
    mail_importer_create_folder (data->parent, data->foldername, NULL, 
                     importer->listener);

    key = g_strdup_printf ("=%s/config/Mail=/importers/", evolution_dir);
    gnome_config_push_prefix (key);
    g_free (key);

    gnome_config_set_bool (KEY, TRUE);
    gnome_config_pop_prefix ();

    gnome_config_sync ();
    gnome_config_drop_all ();
}

static BonoboObject *
netscape_factory_fn (BonoboGenericFactory *_factory,
         void *closure)
{
    EvolutionIntelligentImporter *importer;
    NetscapeImporter *netscape;
    char *message = N_("Evolution has found Netscape mail files.\n"
               "Would you like them to be imported into Evolution?");

    netscape = g_new0 (NetscapeImporter, 1);
    importer = evolution_intelligent_importer_new (netscape_can_import,
                               netscape_create_structure,
                               "Netscape mail", 
                               message, netscape);
    return BONOBO_OBJECT (importer);
}

/* Entry Point */
void
mail_importer_module_init (void)
{
    static gboolean initialised = FALSE;
    BonoboGenericFactory *factory;

    if (initialised == TRUE)
        return;

    factory = bonobo_generic_factory_new (NETSCAPE_INTELLIGENT_IMPORTER_IID,
                          netscape_factory_fn, NULL);
    if (factory == NULL)
        g_warning ("Could not initialise Netscape Intelligent Mail Importer.");
    initialised = TRUE;
}

/* GModule g_module_unload routine */
void 
g_module_unload (void)
{
    netscape_clean_up ();
}