path: root/plugins/bbdb/gaimbuddies.c

/*
 *  Routines to copy information from a Gaim buddy list into an
 *  Evolution addressbook.
 *
 *  I currently copy IM account names and buddy icons, provided you
 *  don't already have a buddy icon defined for a person.
 *
 *  This works today (25 October 2004), but is pretty sure to break
 *  later on as the Gaim buddylist file format shifts. 
 *
 * 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:
 *      Nat Friedman <nat@novell.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#include <glib.h>
#include <libxml/tree.h>
#include <libxml/parser.h>
#include <libxml/xmlmemory.h>
#include <e-util/e-xml-utils.h>

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

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

#include <sys/time.h>
#include <sys/stat.h>

#include <e-util/e-config.h>

#include "bbdb.h"

typedef struct {
    char *account_name;
    char *proto;
    char *alias;
    char *icon;
} GaimBuddy;

/* Defined in bbdb.c */
EBook *bbdb_open_addressbook (int type);

/* Forward declarations for this file. */
void bbdb_sync_buddy_list (void);
static gboolean bbdb_merge_buddy_to_contact (EBook *book, GaimBuddy *b, EContact *c);
static GList *bbdb_get_gaim_buddy_list (void);
static char *get_node_text (xmlNodePtr node);
static char *get_buddy_icon_from_setting (xmlNodePtr setting);
static void free_buddy_list (GList *blist);
static void parse_buddy_group (xmlNodePtr group, GList **buddies, GSList *blocked);
static EContactField proto_to_contact_field (const char *proto);

void
bbdb_sync_buddy_list_check (void)
{
    GConfClient *gconf;
    struct stat statbuf;
    time_t last_sync;
    char *blist_path;
    char *last_sync_str;

    gconf = gconf_client_get_default ();

    blist_path = g_build_path ("/", getenv ("HOME"), ".purple/blist.xml", NULL);
    if (stat (blist_path, &statbuf) < 0) {
        g_free (blist_path);
        g_object_unref (G_OBJECT (gconf));
        return;
    }

    g_free (blist_path);

    /* Reprocess the buddy list if it's been updated. */
    last_sync_str = gconf_client_get_string (gconf, GCONF_KEY_GAIM_LAST_SYNC, NULL);
    if (last_sync_str == NULL || ! strcmp ((const char *)last_sync_str, ""))
        last_sync = (time_t) 0;
    else
        last_sync = (time_t) g_ascii_strtoull (last_sync_str, NULL, 10);

    g_free (last_sync_str);
    g_object_unref (G_OBJECT (gconf));

    if (statbuf.st_mtime > last_sync) {
        fprintf (stderr, "bbdb: Buddy list has changed since last sync.\n");

        bbdb_sync_buddy_list ();
    }
}

void
bbdb_sync_buddy_list (void)
{
    GList       *blist, *l;
    EBook       *book = NULL;

    /* Get the Gaim buddy list */
    blist = bbdb_get_gaim_buddy_list ();
    if (blist == NULL)
        return;

    /* Open the addressbook */
    book = bbdb_open_addressbook (GAIM_ADDRESSBOOK);
    if (book == NULL) {
        free_buddy_list (blist);
        return;
    }

    printf ("bbdb: Synchronizing buddy list to contacts...\n");
    /* Walk the buddy list */
    for (l = blist; l != NULL; l = l->next) {
        GaimBuddy *b = l->data;
        EBookQuery *query;
        GList *contacts;
        GError *error = NULL;
        EContact *c;

        if (b->alias == NULL || strlen (b->alias) == 0)
            b->alias = b->account_name;

        /* Look for an exact match full name == buddy alias */
        query = e_book_query_field_test (E_CONTACT_FULL_NAME, E_BOOK_QUERY_IS, b->alias);
        e_book_get_contacts (book, query, &contacts, NULL);
        e_book_query_unref (query);
        if (contacts != NULL) {

            /* FIXME: If there's more than one contact with this
               name, just give up; we're not smart enough for
               this. */
            if (contacts->next != NULL)
                continue;

            c = E_CONTACT (contacts->data);

            if (! bbdb_merge_buddy_to_contact (book, b, c))
                continue;

            /* Write it out to the addressbook */
            if (! e_book_commit_contact (book, c, &error)) {
                g_warning ("bbdb: Could not modify contact: %s\n", error->message);
                g_error_free (error);
            }
            continue;
        }

        /* Otherwise, create a new contact. */
        c = e_contact_new ();
        e_contact_set (c, E_CONTACT_FULL_NAME, (gpointer) b->alias);
        if (! bbdb_merge_buddy_to_contact (book, b, c)) {
            g_object_unref (G_OBJECT (c));
            continue;
        }

        if (! e_book_add_contact (book, c, &error)) {
            g_warning ("bbdb: Failed to add new contact: %s\n", error->message);
            g_error_free (error);
            return;
        }
        g_object_unref (G_OBJECT (c));

    }


    /* Update the last-sync'd time */
    {
        GConfClient *gconf;
        time_t  last_sync;
        char   *last_sync_str;

        gconf = gconf_client_get_default ();

        time (&last_sync);
        last_sync_str = g_strdup_printf ("%ld", (glong) last_sync);
        gconf_client_set_string (gconf, GCONF_KEY_GAIM_LAST_SYNC, last_sync_str, NULL);
        g_free (last_sync_str);

        g_object_unref (G_OBJECT (gconf));
    }
    printf ("bbdb: Done syncing buddy list to contacts.\n");
}

static gboolean
im_list_contains_buddy (GList *ims, GaimBuddy *b)
{
    GList *l;

    for (l = ims; l != NULL; l = l->next) {
        char *im = (char *) l->data;

        if (! strcmp (im, b->account_name))
            return TRUE;
    }

    return FALSE;
}

static gboolean
bbdb_merge_buddy_to_contact (EBook *book, GaimBuddy *b, EContact *c)
{
    EContactField field;
    GList *ims, *l;
    gboolean dirty = FALSE;

    EContactPhoto *photo = NULL;

    GError *error = NULL;

    /* Set the IM account */
    field = proto_to_contact_field (b->proto);
    ims = e_contact_get (c, field);
    if (! im_list_contains_buddy (ims, b)) {
        ims = g_list_append (ims, (gpointer) b->account_name);
        e_contact_set (c, field, (gpointer) ims);
        dirty = TRUE;
    }

        /* Set the photo if it's not set */
    if (b->icon != NULL) {
        photo = e_contact_get (c, E_CONTACT_PHOTO);
        if (photo == NULL) {
            gchar *contents = NULL;

            photo = g_new0 (EContactPhoto, 1);
            photo->type = E_CONTACT_PHOTO_TYPE_INLINED;

            if (! g_file_get_contents (b->icon, &contents, &photo->data.inlined.length, &error)) {
                g_warning ("bbdb: Could not read buddy icon: %s\n", error->message);
                g_error_free (error);
                for (l = ims; l != NULL; l = l->next)
                    g_free ((char *) l->data);
                g_list_free (ims);
                return dirty;
            }

            photo->data.inlined.data = (unsigned char *)contents;
            e_contact_set (c, E_CONTACT_PHOTO, (gpointer) photo);
            dirty = TRUE;
        }
    }

    /* Clean up */
    if (photo != NULL)
        e_contact_photo_free (photo);

    for (l = ims; l != NULL; l = l->next)
        g_free ((char *) l->data);
    g_list_free (ims);

    return dirty;
}

static EContactField
proto_to_contact_field (const char *proto)
{
    if (! strcmp (proto,  "prpl-oscar"))
        return E_CONTACT_IM_AIM;
    if (! strcmp (proto, "prpl-novell"))
        return E_CONTACT_IM_GROUPWISE;
    if (! strcmp (proto, "prpl-msn"))
        return E_CONTACT_IM_MSN;
    if (! strcmp (proto, "prpl-icq"))
        return E_CONTACT_IM_ICQ;
    if (! strcmp (proto, "prpl-yahoo"))
        return E_CONTACT_IM_YAHOO;
    if (! strcmp (proto, "prpl-jabber"))
        return E_CONTACT_IM_JABBER;
    if (! strcmp (proto, "prpl-gg"))
        return E_CONTACT_IM_GADUGADU;

    return E_CONTACT_IM_AIM;
}

static void
get_all_blocked (xmlNodePtr node, GSList **blocked)
{
    xmlNodePtr child;

    if (!node || !blocked)
        return;

    for (child = node->children; child; child = child->next) {
        if (child->children)
            get_all_blocked (child, blocked);

        if (!strcmp ((const char *)child->name, "block")) {
            char *name = get_node_text (child);

            if (name)
                *blocked = g_slist_prepend (*blocked, name);
        }
    }
}

static GList *
bbdb_get_gaim_buddy_list (void)
{
    char *blist_path;
    xmlDocPtr buddy_xml;
    xmlNodePtr root, child, blist;
    GList *buddies = NULL;
    GSList *blocked = NULL;

    blist_path = g_build_path ("/", getenv ("HOME"), ".purple/blist.xml", NULL);

    buddy_xml = xmlParseFile (blist_path);
    g_free (blist_path);
    if (! buddy_xml) {
        fprintf (stderr, "bbdb: Could not open Pidgin buddy list.\n");
        return NULL;
    }

    root = xmlDocGetRootElement (buddy_xml);
    if (strcmp ((const char *)root->name, "purple")) {
        fprintf (stderr, "bbdb: Could not parse Pidgin buddy list.\n");
        xmlFreeDoc (buddy_xml);
        return NULL;
    }

    for (child = root->children; child != NULL; child = child->next) {
        if (! strcmp ((const char *)child->name, "privacy")) {
            get_all_blocked (child, &blocked);
            break;
        }
    }

    blist = NULL;
    for (child = root->children; child != NULL; child = child->next) {
        if (! strcmp ((const char *)child->name, "blist")) {
            blist = child;
            break;
        }
    }
    if (blist == NULL) {
        fprintf (stderr, "bbdb: Could not find 'blist' element in Pidgin buddy list.\n");
        xmlFreeDoc (buddy_xml);
        return NULL;
    }

    for (child = blist->children; child != NULL; child = child->next) {
        if (! strcmp ((const char *)child->name, "group"))
            parse_buddy_group (child, &buddies, blocked);
    }

    xmlFreeDoc (buddy_xml);

    g_slist_foreach (blocked, (GFunc)g_free, NULL);
    g_slist_free (blocked);

    return buddies;
}

static void
free_gaim_body (GaimBuddy *gb)
{
    if (!gb)
        return;

    g_free (gb->icon);
    g_free (gb->alias);
    g_free (gb->account_name);
    g_free (gb->proto);
    g_free (gb);
}

static void
free_buddy_list (GList *blist)
{
    g_list_foreach (blist, (GFunc)free_gaim_body, NULL);
    g_list_free (blist);
}

static char *
get_node_text (xmlNodePtr node)
{
    if (node->children == NULL || node->children->content == NULL ||
        strcmp ((char *)node->children->name, "text"))
        return NULL;

    return g_strdup ((char *)node->children->content);
}

static char *
get_buddy_icon_from_setting (xmlNodePtr setting)
{
    char *icon = NULL;

    icon = get_node_text (setting);
    if (icon [0] != '/') {
        char *path;

        path = g_build_path ("/", getenv ("HOME"), ".purple/icons", icon, NULL);
        g_free (icon);
        icon = path;
    }


    return icon;
}

static void
parse_contact (xmlNodePtr contact, GList **buddies, GSList *blocked)
{
    xmlNodePtr  child;
    xmlNodePtr  buddy = NULL;
    GaimBuddy  *gb;
    gboolean    is_blocked = FALSE;

    for (child = contact->children; child != NULL; child = child->next) {
        if (! strcmp ((const char *)child->name, "buddy")) {
            buddy = child;
            break;
        }
    }

    if (buddy == NULL) {
        fprintf (stderr, "bbdb: Could not find buddy in contact. Malformed Pidgin buddy list file.\n");
        return;
    }

    gb = g_new0 (GaimBuddy, 1);

    gb->proto = e_xml_get_string_prop_by_name (buddy, (const unsigned char *)"proto");

    for (child = buddy->children; child != NULL && !is_blocked; child = child->next) {
        if (! strcmp ((const char *)child->name, "setting")) {
            char *setting_type;
            setting_type = e_xml_get_string_prop_by_name (child, (const unsigned char *)"name");

            if (! strcmp ((const char *)setting_type, "buddy_icon"))
                gb->icon = get_buddy_icon_from_setting (child);

            g_free (setting_type);
        } else if (! strcmp ((const char *)child->name, "name")) {
            gb->account_name = get_node_text (child);
            is_blocked = g_slist_find_custom (blocked, gb->account_name, (GCompareFunc)strcmp) != NULL;
        } else if (! strcmp ((const char *)child->name, "alias"))
            gb->alias = get_node_text (child);

    }

    if (is_blocked) 
        free_gaim_body (gb);
    else
        *buddies = g_list_prepend (*buddies, gb);
}

static void
parse_buddy_group (xmlNodePtr group, GList **buddies, GSList *blocked)
{
    xmlNodePtr child;

    for (child = group->children; child != NULL; child = child->next) {
        if (strcmp ((const char *)child->name, "contact"))
            continue;

        parse_contact (child, buddies, blocked);
    }
}