path: root/addressbook/importers/evolution-vcard-importer.c

/*
 * Evolution calendar importer component
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      Chris Toshok <toshok@ximian.com>
 *      JP Rosevear <jpr@ximian.com>
 *      Michael Zucchi <notzed@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

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

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

#include <gtk/gtk.h>
#include <glib/gi18n.h>
#include <glib/gstdio.h>

#include <libebook/e-book.h>
#include <libedataserverui/e-source-selector.h>

#include <util/eab-book-util.h>
#include <libebook/e-destination.h>

#include "e-util/e-import.h"

#include "evolution-addressbook-importers.h"

typedef struct {
    EImport *import;
    EImportTarget *target;

    guint idle_id;

    gint state;     /* 0 - importing, 1 - cancelled/complete */
    gint total;
    gint count;

    ESource *primary;

    GList *contactlist;
    GList *iterator;
    EBook *book;
} VCardImporter;

static void vcard_import_done(VCardImporter *gci);

static void
add_to_notes (EContact *contact, EContactField field)
{
    const gchar *old_text;
    const gchar *field_text;
    gchar       *new_text;

    old_text = e_contact_get_const (contact, E_CONTACT_NOTE);
    if (old_text && strstr (old_text, e_contact_pretty_name (field)))
        return;

    field_text = e_contact_get_const (contact, field);
    if (!field_text || !*field_text)
        return;

    new_text = g_strdup_printf ("%s%s%s: %s",
                    old_text ? old_text : "",
                    old_text && *old_text &&
                    *(old_text + strlen (old_text) - 1) != '\n' ? "\n" : "",
                    e_contact_pretty_name (field), field_text);
    e_contact_set (contact, E_CONTACT_NOTE, new_text);
    g_free (new_text);
}

static void
vcard_import_contact(VCardImporter *gci, EContact *contact)
{
    EContactPhoto *photo;
    GList *attrs, *attr;

    /* Apple's addressbook.app exports PHOTO's without a TYPE
       param, so let's figure out the format here if there's a
       PHOTO attribute missing a TYPE param.

       this is sort of a hack, as EContact sets the type for us if
       we use the setter.  so let's e_contact_get + e_contact_set
       on E_CONTACT_PHOTO.
    */
    photo = e_contact_get (contact, E_CONTACT_PHOTO);
    if (photo) {
        e_contact_set (contact, E_CONTACT_PHOTO, photo);
        e_contact_photo_free (photo);
    }

    /* Deal with our XML EDestination stuff in EMAIL attributes, if there is any. */
    attrs = e_contact_get_attributes (contact, E_CONTACT_EMAIL);
    for (attr = attrs; attr; attr = attr->next) {
        EVCardAttribute *a = attr->data;
        GList *v = e_vcard_attribute_get_values (a);

        if (v && v->data) {
            if (!strncmp ((gchar *)v->data, "<?xml", 5)) {
                EDestination *dest = e_destination_import ((gchar *)v->data);

                e_destination_export_to_vcard_attribute (dest, a);

                g_object_unref (dest);

            }
        }
    }
    e_contact_set_attributes (contact, E_CONTACT_EMAIL, attrs);

    /*
      Deal with TEL attributes that don't conform to what we need.

      1. if there's no location (HOME/WORK/OTHER), default to OTHER.
      2. if there's *only* a location specified, default to VOICE.
    */
    attrs = e_vcard_get_attributes (E_VCARD (contact));
    for (attr = attrs; attr; attr = attr->next) {
        EVCardAttribute *a = attr->data;
        gboolean location_only = TRUE;
        gboolean no_location = TRUE;
        GList *params, *param;

        if (g_ascii_strcasecmp (e_vcard_attribute_get_name (a),
                    EVC_TEL))
            continue;

        params = e_vcard_attribute_get_params (a);
        for (param = params; param; param = param->next) {
            EVCardAttributeParam *p = param->data;
            GList *vs, *v;

            if (g_ascii_strcasecmp (e_vcard_attribute_param_get_name (p),
                        EVC_TYPE))
                continue;

            vs = e_vcard_attribute_param_get_values (p);
            for (v = vs; v; v = v->next) {
                if (!g_ascii_strcasecmp ((gchar *)v->data, "WORK") ||
                    !g_ascii_strcasecmp ((gchar *)v->data, "HOME") ||
                    !g_ascii_strcasecmp ((gchar *)v->data, "OTHER"))
                    no_location = FALSE;
                else
                    location_only = FALSE;
            }
        }

        if (location_only) {
            /* add VOICE */
            e_vcard_attribute_add_param_with_value (a,
                                e_vcard_attribute_param_new (EVC_TYPE),
                                "VOICE");
        }
        if (no_location) {
            /* add OTHER */
            e_vcard_attribute_add_param_with_value (a,
                                e_vcard_attribute_param_new (EVC_TYPE),
                                "OTHER");
        }
    }

    /*
      Deal with ADR and EMAIL attributes that don't conform to what we need.

      if HOME or WORK isn't specified, add TYPE=OTHER.
    */
    attrs = e_vcard_get_attributes (E_VCARD (contact));
    for (attr = attrs; attr; attr = attr->next) {
        EVCardAttribute *a = attr->data;
        gboolean no_location = TRUE;
        GList *params, *param;

        if (g_ascii_strcasecmp (e_vcard_attribute_get_name (a), EVC_ADR) &&
            g_ascii_strcasecmp (e_vcard_attribute_get_name (a), EVC_EMAIL))
            continue;

        params = e_vcard_attribute_get_params (a);
        for (param = params; param; param = param->next) {
            EVCardAttributeParam *p = param->data;
            GList *vs, *v;

            if (g_ascii_strcasecmp (e_vcard_attribute_param_get_name (p),
                        EVC_TYPE))
                continue;

            vs = e_vcard_attribute_param_get_values (p);
            for (v = vs; v; v = v->next) {
                if (!g_ascii_strcasecmp ((gchar *)v->data, "WORK") ||
                    !g_ascii_strcasecmp ((gchar *)v->data, "HOME"))
                    no_location = FALSE;
            }
        }

        if (no_location) {
            /* add OTHER */
            e_vcard_attribute_add_param_with_value (a,
                                e_vcard_attribute_param_new (EVC_TYPE),
                                "OTHER");
        }
    }

    /* Work around the fact that these fields no longer show up in the UI */
    add_to_notes (contact, E_CONTACT_OFFICE);
    add_to_notes (contact, E_CONTACT_SPOUSE);
    add_to_notes (contact, E_CONTACT_BLOG_URL);

    /* FIXME Error checking */
    e_book_add_contact (gci->book, contact, NULL);
}

static gboolean
vcard_import_contacts(gpointer data)
{
    VCardImporter *gci = data;
    gint count = 0;
    GList *iterator = gci->iterator;

    if (gci->state == 0) {
        while (count < 50 && iterator) {
            vcard_import_contact(gci, iterator->data);
            count++;
            iterator = iterator->next;
        }
        gci->count += count;
        gci->iterator = iterator;
        if (iterator == NULL)
            gci->state = 1;
    }
    if (gci->state == 1) {
        vcard_import_done(gci);
        return FALSE;
    } else {
        e_import_status(gci->import, gci->target, _("Importing..."), gci->count * 100 / gci->total);
        return TRUE;
    }
}

#define BOM (gunichar2)0xFEFF
#define ANTIBOM (gunichar2)0xFFFE

static gboolean
has_bom (const gunichar2 *utf16)
{

    if ((utf16 == NULL) || (*utf16 == '\0')) {
        return FALSE;
    }

    return ((*utf16 == BOM) || (*utf16 == ANTIBOM));
}

static void
fix_utf16_endianness (gunichar2 *utf16)
{
    gunichar2 *it;

    if ((utf16 == NULL) || (*utf16 == '\0')) {
        return;
    }

    if (*utf16 != ANTIBOM) {
        return;
    }

    for (it = utf16; *it != '\0'; it++) {
        *it = GUINT16_SWAP_LE_BE (*it);
    }
}

/* Converts an UTF-16 string to an UTF-8 string removing the BOM character
 * WARNING: this may modify the utf16 argument if the function detects the
 * string isn't using the local endianness
 */
static gchar *
utf16_to_utf8 (gunichar2 *utf16)
{

    if (utf16 == NULL) {
        return NULL;
    }

    fix_utf16_endianness (utf16);

    if (*utf16 == BOM) {
        utf16++;
    }

    return g_utf16_to_utf8 (utf16, -1, NULL, NULL, NULL);
}

enum _VCardEncoding {
    VCARD_ENCODING_NONE,
    VCARD_ENCODING_UTF8,
    VCARD_ENCODING_UTF16,
    VCARD_ENCODING_LOCALE
};

typedef enum _VCardEncoding VCardEncoding;

/* Actually check the contents of this file */
static VCardEncoding
guess_vcard_encoding (const gchar *filename)
{
    FILE *handle;
    gchar line[4096];
    gchar *line_utf8;
    VCardEncoding encoding = VCARD_ENCODING_NONE;

    handle = g_fopen (filename, "r");
    if (handle == NULL) {
        g_print ("\n");
        return VCARD_ENCODING_NONE;
    }

    fgets (line, 4096, handle);
    if (line == NULL) {
        fclose (handle);
        g_print ("\n");
        return VCARD_ENCODING_NONE;
    }
    fclose (handle);

    if (has_bom ((gunichar2*)line)) {
        gunichar2 *utf16 = (gunichar2*)line;
        /* Check for a BOM to try to detect UTF-16 encoded vcards
         * (MacOSX address book creates such vcards for example)
         */
        line_utf8 = utf16_to_utf8 (utf16);
        if (line_utf8 == NULL) {
            return VCARD_ENCODING_NONE;
        }
        encoding = VCARD_ENCODING_UTF16;
    } else if (g_utf8_validate (line, -1, NULL)) {
        line_utf8 = g_strdup (line);
        encoding = VCARD_ENCODING_UTF8;
    } else {
        line_utf8 = g_locale_to_utf8 (line, -1, NULL, NULL, NULL);
        if (line_utf8 == NULL) {
            return VCARD_ENCODING_NONE;
        }
        encoding = VCARD_ENCODING_LOCALE;
    }

    if (g_ascii_strncasecmp (line_utf8, "BEGIN:VCARD", 11) != 0) {
        encoding = VCARD_ENCODING_NONE;
    }

    g_free (line_utf8);
    return encoding;
}

static void
primary_selection_changed_cb (ESourceSelector *selector, EImportTarget *target)
{
    g_datalist_set_data_full(&target->data, "vcard-source",
                 g_object_ref(e_source_selector_peek_primary_selection(selector)),
                 g_object_unref);
}

static GtkWidget *
vcard_getwidget(EImport *ei, EImportTarget *target, EImportImporter *im)
{
    GtkWidget *vbox, *selector;
    ESource *primary;
    ESourceList *source_list;

    /* FIXME Better error handling */
    if (!e_book_get_addressbooks (&source_list, NULL))
        return NULL;

    vbox = gtk_vbox_new (FALSE, FALSE);

    selector = e_source_selector_new (source_list);
    e_source_selector_show_selection (E_SOURCE_SELECTOR (selector), FALSE);
    gtk_box_pack_start (GTK_BOX (vbox), selector, FALSE, TRUE, 6);

    primary = g_datalist_get_data(&target->data, "vcard-source");
    if (primary == NULL) {
        primary = e_source_list_peek_source_any (source_list);
        g_object_ref(primary);
        g_datalist_set_data_full(&target->data, "vcard-source", primary, g_object_unref);
    }
    e_source_selector_set_primary_selection (E_SOURCE_SELECTOR (selector), primary);
    g_object_unref (source_list);

    g_signal_connect (selector, "primary_selection_changed", G_CALLBACK (primary_selection_changed_cb), target);

    gtk_widget_show_all (vbox);

    return vbox;
}

static gboolean
vcard_supported(EImport *ei, EImportTarget *target, EImportImporter *im)
{
    EImportTargetURI *s;
    gchar *filename;
    gboolean retval;

    if (target->type != E_IMPORT_TARGET_URI)
        return FALSE;

    s = (EImportTargetURI *)target;
    if (s->uri_src == NULL)
        return TRUE;

    if (strncmp(s->uri_src, "file:///", 8) != 0)
        return FALSE;

    filename = g_filename_from_uri (s->uri_src, NULL, NULL);
    if (filename == NULL)
        return FALSE;
    retval = (guess_vcard_encoding(filename) != VCARD_ENCODING_NONE);
    g_free (filename);

    return retval;
}

static void
vcard_import_done(VCardImporter *gci)
{
    if (gci->idle_id)
        g_source_remove(gci->idle_id);

    g_object_unref (gci->book);
    g_list_foreach (gci->contactlist, (GFunc) g_object_unref, NULL);
    g_list_free (gci->contactlist);

    e_import_complete(gci->import, gci->target);
    g_object_unref(gci->import);
    g_free (gci);
}

static void
vcard_import(EImport *ei, EImportTarget *target, EImportImporter *im)
{
    VCardImporter *gci;
    gchar *contents;
    VCardEncoding encoding;
    EBook *book;
    EImportTargetURI *s = (EImportTargetURI *)target;
    gchar *filename;

    filename = g_filename_from_uri(s->uri_src, NULL, NULL);
    if (filename == NULL) {
        g_message(G_STRLOC ": Couldn't get filename from URI '%s'", s->uri_src);
        e_import_complete(ei, target);
        return;
    }
    encoding = guess_vcard_encoding(filename);
    if (encoding == VCARD_ENCODING_NONE) {
        g_free (filename);
        /* this check is superfluous, we've already checked otherwise we can't get here ... */
        e_import_complete(ei, target);
        return;
    }

    book = e_book_new(g_datalist_get_data(&target->data, "vcard-source"), NULL);
    if (book == NULL) {
        g_message(G_STRLOC ":Couldn't create EBook.");
        g_free (filename);
        e_import_complete(ei, target);
        return;
    }

    if (!g_file_get_contents (filename, &contents, NULL, NULL)) {
        g_message (G_STRLOC ":Couldn't read file.");
        g_free (filename);
        e_import_complete(ei, target);
        g_object_unref(book);
        return;
    }

    g_free (filename);
    gci = g_malloc0(sizeof(*gci));
    g_datalist_set_data(&target->data, "vcard-data", gci);
    gci->import = g_object_ref(ei);
    gci->target = target;
    gci->book = book;

    e_book_open (gci->book, FALSE, NULL);

    if (encoding == VCARD_ENCODING_UTF16) {
        gchar *tmp;

        gunichar2 *contents_utf16 = (gunichar2*)contents;
        tmp = utf16_to_utf8 (contents_utf16);
        g_free (contents);
        contents = tmp;
    } else if (encoding == VCARD_ENCODING_LOCALE) {
        gchar *tmp;
        tmp = g_locale_to_utf8 (contents, -1, NULL, NULL, NULL);
        g_free (contents);
        contents = tmp;
    }

    gci->contactlist = eab_contact_list_from_string (contents);
    g_free (contents);
    gci->iterator = gci->contactlist;
    gci->total = g_list_length(gci->contactlist);

    if (gci->iterator)
        gci->idle_id = g_idle_add(vcard_import_contacts, gci);
    else
        vcard_import_done(gci);
}

static void
vcard_cancel(EImport *ei, EImportTarget *target, EImportImporter *im)
{
    VCardImporter *gci = g_datalist_get_data(&target->data, "vcard-data");

    if (gci)
        gci->state = 1;
}

static EImportImporter vcard_importer = {
    E_IMPORT_TARGET_URI,
    0,
    vcard_supported,
    vcard_getwidget,
    vcard_import,
    vcard_cancel,
};

EImportImporter *
evolution_vcard_importer_peek(void)
{
    vcard_importer.name = _("vCard (.vcf, .gcrd)");
    vcard_importer.description = _("Evolution vCard Importer");

    return &vcard_importer;
}